--- /dev/null
+uses CONFIG_PCI_OPTION_ROM_RUN_YABEL
+uses CONFIG_PCI_OPTION_ROM_RUN_REALMODE
+
+if CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ dir yabel
+ dir x86emu
+else
+ if CONFIG_PCI_OPTION_ROM_RUN_REALMODE
+ object x86.o
+ object x86_interrupts.o
+ object x86_asm.S
+ else
+ object biosemu.o
+ dir pcbios
+ dir x86emu
+ end
+end
+
--- /dev/null
+##
+## This file is part of the coreboot project.
+##
+## Copyright (C) 2007 coresystems GmbH
+##
+## This program is free software; you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program; if not, write to the Free Software
+## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+##
+
+#X86EMU_INCLUDE = -I $(src)/util/x86emu/include
+
+X86EMU_SRC = debug.c decode.c fpu.c ops.c ops2.c prim_ops.c sys.c
+ifeq ($(CONFIG_PCI_OPTION_ROM_RUN_X86EMU),y)
+BIOSEMU_SRC = biosemu.c pcbios/pcibios.c
+endif
+
+ifeq ($(CONFIG_PCI_OPTION_ROM_RUN_YABEL),y)
+BIOSEMU_SRC = biosemu.c debug.c device.c mem.c io.c interrupt.c
+#TODO: add vbe.c, currently not needed...
+#BIOSEMU_SRC +=vbe.c
+BIOSEMU_SRC +=pmm.c
+#PH: TODO: remove the compat files??
+BIOSEMU_SRC += compat/functions.c
+X86EMU_INCLUDE += -I $(src)/util/x86emu/yabel
+X86EMU_INCLUDE += -I $(src)/util/x86emu
+#TODO: remove these, these are .h files from slof, to make the merge easier...
+X86EMU_INCLUDE += -I $(src)/util/x86emu/yabel/compat
+endif
+REALMODE_SRC = x86.c x86_asm.S
+
+ifeq ($(CONFIG_PCI_OPTION_ROM_RUN_X86EMU),y)
+LIBX86EMU_SRC=$(patsubst %,x86emu/%,$(X86EMU_SRC)) $(BIOSEMU_SRC)
+endif
+
+ifeq ($(CONFIG_PCI_OPTION_ROM_RUN_YABEL),y)
+LIBX86EMU_SRC=$(patsubst %,x86emu/%,$(X86EMU_SRC)) $(patsubst %,yabel/%,$(BIOSEMU_SRC))
+endif
+
+ifeq ($(CONFIG_PCI_OPTION_ROM_RUN_REALMODE),y)
+LIBX86EMU_SRC=$(REALMODE_SRC)
+endif
+
+LIBX86EMU_OBJS = $(patsubst %.c,$(obj)/util/x86emu/%.o,$(LIBX86EMU_SRC))
+# needed for kscope
+PCIROM_SRC += $(patsubst %,$(src)/util/x86emu/%,$(LIBX86EMU_SRC))
+
+
+$(obj)/util/x86emu/libx86emu.a: $(LIBX86EMU_OBJS) $(src)/.config
+ $(Q)printf " AR $(subst $(shell pwd)/,,$(@))\n"
+ $(Q)rm -f $@ # otherwise we always add to the archive
+ $(Q)$(AR) qcs $@ $(LIBX86EMU_OBJS)
+
+#
+# This rule is also valid for all subdirectories
+#
+
+$(obj)/util/x86emu/%.o: $(src)/util/x86emu/%.c
+ $(Q)mkdir -p $(dir $@)
+ $(Q)printf " CC $(subst $(shell pwd)/,,$(@))\n"
+ $(Q)$(CC) -Werror $(INITCFLAGS) $(X86EMU_INCLUDE) -I$(src)/util/x86emu/include -c $< -o $@
+
--- /dev/null
+/*
+ * This software and ancillary information (herein called SOFTWARE )
+ * called LinuxBIOS is made available under the terms described
+ * here. The SOFTWARE has been approved for release with associated
+ * LA-CC Number 00-34 . Unless otherwise indicated, this SOFTWARE has
+ * been authored by an employee or employees of the University of
+ * California, operator of the Los Alamos National Laboratory under
+ * Contract No. W-7405-ENG-36 with the U.S. Department of Energy. The
+ * U.S. Government has rights to use, reproduce, and distribute this
+ * SOFTWARE. The public may copy, distribute, prepare derivative works
+ * and publicly display this SOFTWARE without charge, provided that this
+ * Notice and any statement of authorship are reproduced on all copies.
+ * Neither the Government nor the University makes any warranty, express
+ * or implied, or assumes any liability or responsibility for the use of
+ * this SOFTWARE. If SOFTWARE is modified to produce derivative works,
+ * such modified SOFTWARE should be clearly marked, so as not to confuse
+ * it with the version available from LANL.
+ */
+ /*
+ * This file is part of the coreboot project.
+ *
+ * (c) Copyright 2000, Ron Minnich, Advanced Computing Lab, LANL
+ * Copyright (C) 2009 coresystems GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifdef CONFIG_COREBOOT_V2
+#include <arch/io.h>
+#include <console/console.h>
+#else
+#include <io.h>
+#include <console.h>
+#endif
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+
+#include <x86emu/x86emu.h>
+
+#include "pcbios/pcibios.h"
+
+#define MEM_WB(where, what) wrb(where, what)
+#define MEM_WW(where, what) wrw(where, what)
+#define MEM_WL(where, what) wrl(where, what)
+
+#define MEM_RB(where) rdb(where)
+#define MEM_RW(where) rdw(where)
+#define MEM_RL(where) rdl(where)
+
+u8 x_inb(u16 port);
+u16 x_inw(u16 port);
+void x_outb(u16 port, u8 val);
+void x_outw(u16 port, u16 val);
+u32 x_inl(u16 port);
+void x_outl(u16 port, u32 val);
+
+//
+void X86EMU_setMemBase(void *base, size_t size);
+
+/* general software interrupt handler */
+u32 getIntVect(int num)
+{
+ return MEM_RW(num << 2) + (MEM_RW((num << 2) + 2) << 4);
+}
+
+/* FIXME: There is already a push_word() in the emulator */
+void pushw(u16 val)
+{
+ X86_ESP -= 2;
+ MEM_WW(((u32) X86_SS << 4) + X86_SP, val);
+}
+
+int run_bios_int(int num)
+{
+ u32 eflags;
+
+ eflags = X86_EFLAGS;
+ pushw(eflags);
+ pushw(X86_CS);
+ pushw(X86_IP);
+ X86_CS = MEM_RW((num << 2) + 2);
+ X86_IP = MEM_RW(num << 2);
+
+ return 1;
+}
+
+u8 x_inb(u16 port)
+{
+ u8 val;
+
+ val = inb(port);
+#ifdef CONFIG_DEBUG
+ if (port != 0x40)
+ printk("inb(0x%04x) = 0x%02x\n", port, val);
+#endif
+
+ return val;
+}
+
+u16 x_inw(u16 port)
+{
+ u16 val;
+
+ val = inw(port);
+
+#ifdef CONFIG_DEBUG
+ printk("inw(0x%04x) = 0x%04x\n", port, val);
+#endif
+ return val;
+}
+
+u32 x_inl(u16 port)
+{
+ u32 val;
+
+ val = inl(port);
+
+#ifdef CONFIG_DEBUG
+ printk("inl(0x%04x) = 0x%08x\n", port, val);
+#endif
+ return val;
+}
+
+void x_outb(u16 port, u8 val)
+{
+#ifdef CONFIG_DEBUG
+ if (port != 0x43)
+ printk("outb(0x%02x, 0x%04x)\n", val, port);
+#endif
+ outb(val, port);
+}
+
+void x_outw(u16 port, u16 val)
+{
+#ifdef CONFIG_DEBUG
+ printk("outw(0x%04x, 0x%04x)\n", val, port);
+#endif
+ outw(val, port);
+}
+
+void x_outl(u16 port, u32 val)
+{
+#ifdef CONFIG_DEBUG
+ printk("outl(0x%08x, 0x%04x)\n", val, port);
+#endif
+ outl(val, port);
+}
+
+X86EMU_pioFuncs myfuncs = {
+ x_inb, x_inw, x_inl,
+ x_outb, x_outw, x_outl
+};
+
+
+
+/* Interrupt multiplexer */
+
+void do_int(int num)
+{
+ int ret = 0;
+
+ printk("int%x vector at %x\n", num, getIntVect(num));
+
+ switch (num) {
+#ifndef _PC
+ case 0x10:
+ case 0x42:
+ case 0x6D:
+ if (getIntVect(num) == 0x0000) {
+ printk("uninitialized interrupt vector\n");
+ ret = 1;
+ }
+ if (getIntVect(num) == 0xFF065) {
+ //ret = int42_handler();
+ ret = 1;
+ }
+ break;
+#endif
+ case 0x15:
+ //ret = int15_handler();
+ ret = 1;
+ break;
+ case 0x16:
+ //ret = int16_handler();
+ ret = 0;
+ break;
+ case 0x1A:
+ ret = pcibios_handler();
+ ret = 1;
+ break;
+ case 0xe6:
+ //ret = intE6_handler();
+ ret = 0;
+ break;
+ default:
+ break;
+ }
+
+ if (!ret)
+ ret = run_bios_int(num);
+
+}
+
+#if 0
+#define SYS_BIOS 0xf0000
+/*
+ * here we are really paranoid about faking a "real"
+ * BIOS. Most of this information was pulled from
+ * dosemu.
+ */
+#if 0
+void setup_int_vect(void)
+{
+ int i;
+
+ /* let the int vects point to the SYS_BIOS seg */
+ for (i = 0; i < 0x80; i++) {
+ MEM_WW(i << 2, 0);
+ MEM_WW((i << 2) + 2, SYS_BIOS >> 4);
+ }
+
+ reset_int_vect();
+
+ /* font tables default location (int 1F) */
+ MEM_WW(0x1f << 2, 0xfa6e);
+ /* int 11 default location (Get Equipment Configuration) */
+ MEM_WW(0x11 << 2, 0xf84d);
+ /* int 12 default location (Get Conventional Memory Size) */
+ MEM_WW(0x12 << 2, 0xf841);
+ /* int 15 default location (I/O System Extensions) */
+ MEM_WW(0x15 << 2, 0xf859);
+ /* int 1A default location (RTC, PCI and others) */
+ MEM_WW(0x1a << 2, 0xff6e);
+ /* int 05 default location (Bound Exceeded) */
+ MEM_WW(0x05 << 2, 0xff54);
+ /* int 08 default location (Double Fault) */
+ MEM_WW(0x08 << 2, 0xfea5);
+ /* int 13 default location (Disk) */
+ MEM_WW(0x13 << 2, 0xec59);
+ /* int 0E default location (Page Fault) */
+ MEM_WW(0x0e << 2, 0xef57);
+ /* int 17 default location (Parallel Port) */
+ MEM_WW(0x17 << 2, 0xefd2);
+ /* fdd table default location (int 1e) */
+ MEM_WW(0x1e << 2, 0xefc7);
+
+ /* Set Equipment flag to VGA */
+ i = MEM_RB(0x0410) & 0xCF;
+ MEM_WB(0x0410, i);
+ /* XXX Perhaps setup more of the BDA here. See also int42(0x00). */
+}
+
+int setup_system_bios(void *base_addr)
+{
+ char *base = (char *) base_addr;
+
+ /*
+ * we trap the "industry standard entry points" to the BIOS
+ * and all other locations by filling them with "hlt"
+ * TODO: implement hlt-handler for these
+ */
+ memset(base, 0xf4, 0x10000);
+
+ /* set bios date */
+ //strcpy(base + 0x0FFF5, "06/11/99");
+ /* set up eisa ident string */
+ //strcpy(base + 0x0FFD9, "PCI_ISA");
+ /* write system model id for IBM-AT */
+ //*((unsigned char *) (base + 0x0FFFE)) = 0xfc;
+
+ return 1;
+}
+#endif
+
+void reset_int_vect(void)
+{
+ /*
+ * This table is normally located at 0xF000:0xF0A4. However, int 0x42,
+ * function 0 (Mode Set) expects it (or a copy) somewhere in the bottom
+ * 64kB. Note that because this data doesn't survive POST, int 0x42 should
+ * only be used during EGA/VGA BIOS initialisation.
+ */
+ static const u8 VideoParms[] = {
+ /* Timing for modes 0x00 & 0x01 */
+ 0x38, 0x28, 0x2d, 0x0a, 0x1f, 0x06, 0x19, 0x1c,
+ 0x02, 0x07, 0x06, 0x07, 0x00, 0x00, 0x00, 0x00,
+ /* Timing for modes 0x02 & 0x03 */
+ 0x71, 0x50, 0x5a, 0x0a, 0x1f, 0x06, 0x19, 0x1c,
+ 0x02, 0x07, 0x06, 0x07, 0x00, 0x00, 0x00, 0x00,
+ /* Timing for modes 0x04, 0x05 & 0x06 */
+ 0x38, 0x28, 0x2d, 0x0a, 0x7f, 0x06, 0x64, 0x70,
+ 0x02, 0x01, 0x06, 0x07, 0x00, 0x00, 0x00, 0x00,
+ /* Timing for mode 0x07 */
+ 0x61, 0x50, 0x52, 0x0f, 0x19, 0x06, 0x19, 0x19,
+ 0x02, 0x0d, 0x0b, 0x0c, 0x00, 0x00, 0x00, 0x00,
+ /* Display page lengths in little endian order */
+ 0x00, 0x08, /* Modes 0x00 and 0x01 */
+ 0x00, 0x10, /* Modes 0x02 and 0x03 */
+ 0x00, 0x40, /* Modes 0x04 and 0x05 */
+ 0x00, 0x40, /* Modes 0x06 and 0x07 */
+ /* Number of columns for each mode */
+ 40, 40, 80, 80, 40, 40, 80, 80,
+ /* CGA Mode register value for each mode */
+ 0x2c, 0x28, 0x2d, 0x29, 0x2a, 0x2e, 0x1e, 0x29,
+ /* Padding */
+ 0x00, 0x00, 0x00, 0x00
+ };
+ int i;
+
+ for (i = 0; i < sizeof(VideoParms); i++)
+ MEM_WB(i + (0x1000 - sizeof(VideoParms)), VideoParms[i]);
+ MEM_WW(0x1d << 2, 0x1000 - sizeof(VideoParms));
+ MEM_WW((0x1d << 2) + 2, 0);
+
+ printk(BIOS_DEBUG,"SETUP INT\n");
+ MEM_WW(0x10 << 2, 0xf065);
+ MEM_WW((0x10 << 2) + 2, SYS_BIOS >> 4);
+ MEM_WW(0x42 << 2, 0xf065);
+ MEM_WW((0x42 << 2) + 2, SYS_BIOS >> 4);
+ MEM_WW(0x6D << 2, 0xf065);
+ MEM_WW((0x6D << 2) + 2, SYS_BIOS >> 4);
+}
+#endif
+
+void run_bios(struct device * dev, unsigned long addr)
+{
+#if 1
+ int i;
+ unsigned short initialcs = (addr & 0xF0000) >> 4;
+ unsigned short initialip = (addr + 3) & 0xFFFF;
+ unsigned short devfn = dev->bus->secondary << 8 | dev->path.pci.devfn;
+
+ X86EMU_intrFuncs intFuncs[256];
+
+ X86EMU_setMemBase(0, 0x100000);
+ X86EMU_setupPioFuncs(&myfuncs);
+ for (i = 0; i < 256; i++)
+ intFuncs[i] = do_int;
+ X86EMU_setupIntrFuncs(intFuncs);
+
+ {
+ char *date = "01/01/99";
+ for (i = 0; date[i]; i++)
+ wrb(0xffff5 + i, date[i]);
+ wrb(0xffff7, '/');
+ wrb(0xffffa, '/');
+ }
+
+ {
+ /* FixME: move PIT init to its own file */
+ outb(0x36, 0x43);
+ outb(0x00, 0x40);
+ outb(0x00, 0x40);
+ }
+ //setup_int_vect();
+
+ /* cpu setup */
+ X86_AX = devfn ? devfn : 0xff;
+ X86_DX = 0x80;
+ X86_EIP = initialip;
+ X86_CS = initialcs;
+
+ /* Initialize stack and data segment */
+ X86_SS = initialcs;
+ X86_SP = 0xfffe;
+ X86_DS = 0x0040;
+ X86_ES = 0x0000;
+
+ /* We need a sane way to return from bios
+ * execution. A hlt instruction and a pointer
+ * to it, both kept on the stack, will do.
+ */
+ pushw(0xf4f4); /* hlt; hlt */
+ pushw(X86_SS);
+ pushw(X86_SP + 2);
+
+#ifdef CONFIG_DEBUG
+ //X86EMU_trace_on();
+#endif
+
+ printk("entering emulator\n");
+ X86EMU_exec();
+ printk("exited emulator\n");
+
+#endif
+}
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1996-1999 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: Header file for FPU register definitions.
+*
+****************************************************************************/
+
+#ifndef __X86EMU_FPU_REGS_H
+#define __X86EMU_FPU_REGS_H
+
+#ifdef X86_FPU_SUPPORT
+
+#pragma pack(1)
+
+/* Basic 8087 register can hold any of the following values: */
+
+union x86_fpu_reg_u {
+ s8 tenbytes[10];
+ double dval;
+ float fval;
+ s16 sval;
+ s32 lval;
+ };
+
+struct x86_fpu_reg {
+ union x86_fpu_reg_u reg;
+ char tag;
+ };
+
+/*
+ * Since we are not going to worry about the problems of aliasing
+ * registers, every time a register is modified, its result type is
+ * set in the tag fields for that register. If some operation
+ * attempts to access the type in a way inconsistent with its current
+ * storage format, then we flag the operation. If common, we'll
+ * attempt the conversion.
+ */
+
+#define X86_FPU_VALID 0x80
+#define X86_FPU_REGTYP(r) ((r) & 0x7F)
+
+#define X86_FPU_WORD 0x0
+#define X86_FPU_SHORT 0x1
+#define X86_FPU_LONG 0x2
+#define X86_FPU_FLOAT 0x3
+#define X86_FPU_DOUBLE 0x4
+#define X86_FPU_LDBL 0x5
+#define X86_FPU_BSD 0x6
+
+#define X86_FPU_STKTOP 0
+
+struct x86_fpu_registers {
+ struct x86_fpu_reg x86_fpu_stack[8];
+ int x86_fpu_flags;
+ int x86_fpu_config; /* rounding modes, etc. */
+ short x86_fpu_tos, x86_fpu_bos;
+ };
+
+#pragma pack()
+
+/*
+ * There are two versions of the following macro.
+ *
+ * One version is for opcode D9, for which there are more than 32
+ * instructions encoded in the second byte of the opcode.
+ *
+ * The other version, deals with all the other 7 i87 opcodes, for
+ * which there are only 32 strings needed to describe the
+ * instructions.
+ */
+
+#endif /* X86_FPU_SUPPORT */
+
+#ifdef CONFIG_DEBUG
+# define DECODE_PRINTINSTR32(t,mod,rh,rl) \
+ DECODE_PRINTF(t[(mod<<3)+(rh)]);
+# define DECODE_PRINTINSTR256(t,mod,rh,rl) \
+ DECODE_PRINTF(t[(mod<<6)+(rh<<3)+(rl)]);
+#else
+# define DECODE_PRINTINSTR32(t,mod,rh,rl)
+# define DECODE_PRINTINSTR256(t,mod,rh,rl)
+#endif
+
+#endif /* __X86EMU_FPU_REGS_H */
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1996-1999 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: Header file for x86 register definitions.
+*
+****************************************************************************/
+/* $XFree86: xc/extras/x86emu/include/x86emu/regs.h,v 1.3 2001/10/28 03:32:25 tsi Exp $ */
+
+#ifndef __X86EMU_REGS_H
+#define __X86EMU_REGS_H
+
+/*---------------------- Macros and type definitions ----------------------*/
+
+#pragma pack(1)
+
+/*
+ * General EAX, EBX, ECX, EDX type registers. Note that for
+ * portability, and speed, the issue of byte swapping is not addressed
+ * in the registers. All registers are stored in the default format
+ * available on the host machine. The only critical issue is that the
+ * registers should line up EXACTLY in the same manner as they do in
+ * the 386. That is:
+ *
+ * EAX & 0xff === AL
+ * EAX & 0xffff == AX
+ *
+ * etc. The result is that alot of the calculations can then be
+ * done using the native instruction set fully.
+ */
+
+#ifdef __BIG_ENDIAN__
+
+typedef struct {
+ u32 e_reg;
+ } I32_reg_t;
+
+typedef struct {
+ u16 filler0, x_reg;
+ } I16_reg_t;
+
+typedef struct {
+ u8 filler0, filler1, h_reg, l_reg;
+ } I8_reg_t;
+
+#else /* !__BIG_ENDIAN__ */
+
+typedef struct {
+ u32 e_reg;
+ } I32_reg_t;
+
+typedef struct {
+ u16 x_reg;
+ } I16_reg_t;
+
+typedef struct {
+ u8 l_reg, h_reg;
+ } I8_reg_t;
+
+#endif /* BIG_ENDIAN */
+
+typedef union {
+ I32_reg_t I32_reg;
+ I16_reg_t I16_reg;
+ I8_reg_t I8_reg;
+ } i386_general_register;
+
+struct i386_general_regs {
+ i386_general_register A, B, C, D;
+ };
+
+typedef struct i386_general_regs Gen_reg_t;
+
+struct i386_special_regs {
+ i386_general_register SP, BP, SI, DI, IP;
+ u32 FLAGS;
+ };
+
+/*
+ * Segment registers here represent the 16 bit quantities
+ * CS, DS, ES, SS.
+ */
+
+struct i386_segment_regs {
+ u16 CS, DS, SS, ES, FS, GS;
+ };
+
+/* 8 bit registers */
+#define R_AH gen.A.I8_reg.h_reg
+#define R_AL gen.A.I8_reg.l_reg
+#define R_BH gen.B.I8_reg.h_reg
+#define R_BL gen.B.I8_reg.l_reg
+#define R_CH gen.C.I8_reg.h_reg
+#define R_CL gen.C.I8_reg.l_reg
+#define R_DH gen.D.I8_reg.h_reg
+#define R_DL gen.D.I8_reg.l_reg
+
+/* 16 bit registers */
+#define R_AX gen.A.I16_reg.x_reg
+#define R_BX gen.B.I16_reg.x_reg
+#define R_CX gen.C.I16_reg.x_reg
+#define R_DX gen.D.I16_reg.x_reg
+
+/* 32 bit extended registers */
+#define R_EAX gen.A.I32_reg.e_reg
+#define R_EBX gen.B.I32_reg.e_reg
+#define R_ECX gen.C.I32_reg.e_reg
+#define R_EDX gen.D.I32_reg.e_reg
+
+/* special registers */
+#define R_SP spc.SP.I16_reg.x_reg
+#define R_BP spc.BP.I16_reg.x_reg
+#define R_SI spc.SI.I16_reg.x_reg
+#define R_DI spc.DI.I16_reg.x_reg
+#define R_IP spc.IP.I16_reg.x_reg
+#define R_FLG spc.FLAGS
+
+/* special registers */
+#define R_SP spc.SP.I16_reg.x_reg
+#define R_BP spc.BP.I16_reg.x_reg
+#define R_SI spc.SI.I16_reg.x_reg
+#define R_DI spc.DI.I16_reg.x_reg
+#define R_IP spc.IP.I16_reg.x_reg
+#define R_FLG spc.FLAGS
+
+/* special registers */
+#define R_ESP spc.SP.I32_reg.e_reg
+#define R_EBP spc.BP.I32_reg.e_reg
+#define R_ESI spc.SI.I32_reg.e_reg
+#define R_EDI spc.DI.I32_reg.e_reg
+#define R_EIP spc.IP.I32_reg.e_reg
+#define R_EFLG spc.FLAGS
+
+/* segment registers */
+#define R_CS seg.CS
+#define R_DS seg.DS
+#define R_SS seg.SS
+#define R_ES seg.ES
+#define R_FS seg.FS
+#define R_GS seg.GS
+
+/* flag conditions */
+#define FB_CF 0x0001 /* CARRY flag */
+#define FB_PF 0x0004 /* PARITY flag */
+#define FB_AF 0x0010 /* AUX flag */
+#define FB_ZF 0x0040 /* ZERO flag */
+#define FB_SF 0x0080 /* SIGN flag */
+#define FB_TF 0x0100 /* TRAP flag */
+#define FB_IF 0x0200 /* INTERRUPT ENABLE flag */
+#define FB_DF 0x0400 /* DIR flag */
+#define FB_OF 0x0800 /* OVERFLOW flag */
+
+/* 80286 and above always have bit#1 set */
+#define F_ALWAYS_ON (0x0002) /* flag bits always on */
+
+/*
+ * Define a mask for only those flag bits we will ever pass back
+ * (via PUSHF)
+ */
+#define F_MSK (FB_CF|FB_PF|FB_AF|FB_ZF|FB_SF|FB_TF|FB_IF|FB_DF|FB_OF)
+
+/* following bits masked in to a 16bit quantity */
+
+#define F_CF 0x0001 /* CARRY flag */
+#define F_PF 0x0004 /* PARITY flag */
+#define F_AF 0x0010 /* AUX flag */
+#define F_ZF 0x0040 /* ZERO flag */
+#define F_SF 0x0080 /* SIGN flag */
+#define F_TF 0x0100 /* TRAP flag */
+#define F_IF 0x0200 /* INTERRUPT ENABLE flag */
+#define F_DF 0x0400 /* DIR flag */
+#define F_OF 0x0800 /* OVERFLOW flag */
+
+#define TOGGLE_FLAG(flag) (M.x86.R_FLG ^= (flag))
+#define SET_FLAG(flag) (M.x86.R_FLG |= (flag))
+#define CLEAR_FLAG(flag) (M.x86.R_FLG &= ~(flag))
+#define ACCESS_FLAG(flag) (M.x86.R_FLG & (flag))
+#define CLEARALL_FLAG(m) (M.x86.R_FLG = 0)
+
+#define CONDITIONAL_SET_FLAG(COND,FLAG) \
+ if (COND) SET_FLAG(FLAG); else CLEAR_FLAG(FLAG)
+
+#define F_PF_CALC 0x010000 /* PARITY flag has been calced */
+#define F_ZF_CALC 0x020000 /* ZERO flag has been calced */
+#define F_SF_CALC 0x040000 /* SIGN flag has been calced */
+
+#define F_ALL_CALC 0xff0000 /* All have been calced */
+
+/*
+ * Emulator machine state.
+ * Segment usage control.
+ */
+#define SYSMODE_SEG_DS_SS 0x00000001
+#define SYSMODE_SEGOVR_CS 0x00000002
+#define SYSMODE_SEGOVR_DS 0x00000004
+#define SYSMODE_SEGOVR_ES 0x00000008
+#define SYSMODE_SEGOVR_FS 0x00000010
+#define SYSMODE_SEGOVR_GS 0x00000020
+#define SYSMODE_SEGOVR_SS 0x00000040
+#define SYSMODE_PREFIX_REPE 0x00000080
+#define SYSMODE_PREFIX_REPNE 0x00000100
+#define SYSMODE_PREFIX_DATA 0x00000200
+#define SYSMODE_PREFIX_ADDR 0x00000400
+//phueper: for REP(E|NE) Instructions, we need to decide wether it should be using
+//the 32bit ECX register as or the 16bit CX register as count register
+#define SYSMODE_32BIT_REP 0x00000800
+#define SYSMODE_INTR_PENDING 0x10000000
+#define SYSMODE_EXTRN_INTR 0x20000000
+#define SYSMODE_HALTED 0x40000000
+
+#define SYSMODE_SEGMASK (SYSMODE_SEG_DS_SS | \
+ SYSMODE_SEGOVR_CS | \
+ SYSMODE_SEGOVR_DS | \
+ SYSMODE_SEGOVR_ES | \
+ SYSMODE_SEGOVR_FS | \
+ SYSMODE_SEGOVR_GS | \
+ SYSMODE_SEGOVR_SS)
+#define SYSMODE_CLRMASK (SYSMODE_SEG_DS_SS | \
+ SYSMODE_SEGOVR_CS | \
+ SYSMODE_SEGOVR_DS | \
+ SYSMODE_SEGOVR_ES | \
+ SYSMODE_SEGOVR_FS | \
+ SYSMODE_SEGOVR_GS | \
+ SYSMODE_SEGOVR_SS | \
+ SYSMODE_PREFIX_DATA | \
+ SYSMODE_PREFIX_ADDR | \
+ SYSMODE_32BIT_REP)
+
+#define INTR_SYNCH 0x1
+#define INTR_ASYNCH 0x2
+#define INTR_HALTED 0x4
+
+typedef struct {
+ struct i386_general_regs gen;
+ struct i386_special_regs spc;
+ struct i386_segment_regs seg;
+ /*
+ * MODE contains information on:
+ * REPE prefix 2 bits repe,repne
+ * SEGMENT overrides 5 bits normal,DS,SS,CS,ES
+ * Delayed flag set 3 bits (zero, signed, parity)
+ * reserved 6 bits
+ * interrupt # 8 bits instruction raised interrupt
+ * BIOS video segregs 4 bits
+ * Interrupt Pending 1 bits
+ * Extern interrupt 1 bits
+ * Halted 1 bits
+ */
+ u32 mode;
+ volatile int intr; /* mask of pending interrupts */
+ volatile int debug;
+#ifdef CONFIG_DEBUG
+ int check;
+ u16 saved_ip;
+ u16 saved_cs;
+ int enc_pos;
+ int enc_str_pos;
+ char decode_buf[32]; /* encoded byte stream */
+ char decoded_buf[256]; /* disassembled strings */
+#endif
+ u8 intno;
+ u8 __pad[3];
+ } X86EMU_regs;
+
+/****************************************************************************
+REMARKS:
+Structure maintaining the emulator machine state.
+
+MEMBERS:
+mem_base - Base real mode memory for the emulator
+abseg - Base for the absegment
+mem_size - Size of the real mode memory block for the emulator
+private - private data pointer
+x86 - X86 registers
+****************************************************************************/
+typedef struct {
+ unsigned long mem_base;
+ unsigned long mem_size;
+ unsigned long abseg;
+ void* private;
+ X86EMU_regs x86;
+ } X86EMU_sysEnv;
+
+#pragma pack()
+
+/*----------------------------- Global Variables --------------------------*/
+
+#ifdef __cplusplus
+extern "C" { /* Use "C" linkage when in C++ mode */
+#endif
+
+/* Global emulator machine state.
+ *
+ * We keep it global to avoid pointer dereferences in the code for speed.
+ */
+
+extern X86EMU_sysEnv _X86EMU_env;
+#define M _X86EMU_env
+
+#define X86_EAX M.x86.R_EAX
+#define X86_EBX M.x86.R_EBX
+#define X86_ECX M.x86.R_ECX
+#define X86_EDX M.x86.R_EDX
+#define X86_ESI M.x86.R_ESI
+#define X86_EDI M.x86.R_EDI
+#define X86_EBP M.x86.R_EBP
+#define X86_EIP M.x86.R_EIP
+#define X86_ESP M.x86.R_ESP
+#define X86_EFLAGS M.x86.R_EFLG
+
+#define X86_FLAGS M.x86.R_FLG
+#define X86_AX M.x86.R_AX
+#define X86_BX M.x86.R_BX
+#define X86_CX M.x86.R_CX
+#define X86_DX M.x86.R_DX
+#define X86_SI M.x86.R_SI
+#define X86_DI M.x86.R_DI
+#define X86_BP M.x86.R_BP
+#define X86_IP M.x86.R_IP
+#define X86_SP M.x86.R_SP
+#define X86_CS M.x86.R_CS
+#define X86_DS M.x86.R_DS
+#define X86_ES M.x86.R_ES
+#define X86_SS M.x86.R_SS
+#define X86_FS M.x86.R_FS
+#define X86_GS M.x86.R_GS
+
+#define X86_AL M.x86.R_AL
+#define X86_BL M.x86.R_BL
+#define X86_CL M.x86.R_CL
+#define X86_DL M.x86.R_DL
+
+#define X86_AH M.x86.R_AH
+#define X86_BH M.x86.R_BH
+#define X86_CH M.x86.R_CH
+#define X86_DH M.x86.R_DH
+
+
+/*-------------------------- Function Prototypes --------------------------*/
+
+/* Function to log information at runtime */
+
+//void printk(const char *fmt, ...);
+
+#ifdef __cplusplus
+} /* End of "C" linkage for C++ */
+#endif
+
+#endif /* __X86EMU_REGS_H */
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1996-1999 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: Header file for x86 emulator type definitions.
+*
+****************************************************************************/
+
+/* $XFree86: xc/extras/x86emu/include/x86emu/types.h,v 1.4 2000/09/26 15:56:44 tsi Exp $ */
+
+#ifndef __X86EMU_TYPES_H
+#define __X86EMU_TYPES_H
+
+//#ifndef IN_MODULE
+//#include <sys/types.h>
+//#endif
+
+/*
+ * The following kludge is an attempt to work around typedef conflicts with
+ * <sys/types.h>.
+ */
+#define u8 x86emuu8
+#define u16 x86emuu16
+#define u32 x86emuu32
+#define u64 x86emuu64
+#define s8 x86emus8
+#define s16 x86emus16
+#define s32 x86emus32
+#define s64 x86emus64
+#define uint x86emuuint
+#define sint x86emusint
+
+/*---------------------- Macros and type definitions ----------------------*/
+
+/* Currently only for Linux/32bit */
+#if defined(__GNUC__) && !defined(NO_LONG_LONG)
+#define __HAS_LONG_LONG__
+#endif
+
+typedef unsigned char u8;
+typedef unsigned short u16;
+typedef unsigned int u32;
+#ifdef __HAS_LONG_LONG__
+typedef unsigned long long u64;
+#endif
+
+typedef signed char s8;
+typedef signed short s16;
+typedef signed int s32;
+#ifdef __HAS_LONG_LONG__
+typedef signed long long s64;
+#endif
+
+typedef unsigned int uint;
+typedef signed int sint;
+
+typedef u16 X86EMU_pioAddr;
+
+#endif /* __X86EMU_TYPES_H */
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1996-1999 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: Header file for public specific functions.
+* Any application linking against us should only
+* include this header
+*
+****************************************************************************/
+/* $XFree86: xc/extras/x86emu/include/x86emu.h,v 1.2 2000/11/21 23:10:25 tsi Exp $ */
+
+#ifndef __X86EMU_X86EMU_H
+#define __X86EMU_X86EMU_H
+
+/* FIXME: undefine printk for the moment */
+#if 1 /* Coreboot needs to map prinkf to printk. */
+#include <console.h>
+#define printk(x...) printk(BIOS_DEBUG, x)
+#else
+#define printk printf
+#endif
+
+#ifdef SCITECH
+#include "scitech.h"
+#define X86API _ASMAPI
+#define X86APIP _ASMAPIP
+typedef int X86EMU_pioAddr;
+#else
+#include "types.h"
+#define X86API
+#define X86APIP *
+#endif
+#include "regs.h"
+
+/*---------------------- Macros and type definitions ----------------------*/
+
+#pragma pack(1)
+
+/****************************************************************************
+REMARKS:
+Data structure containing ponters to programmed I/O functions used by the
+emulator. This is used so that the user program can hook all programmed
+I/O for the emulator to handled as necessary by the user program. By
+default the emulator contains simple functions that do not do access the
+hardware in any way. To allow the emualtor access the hardware, you will
+need to override the programmed I/O functions using the X86EMU_setupPioFuncs
+function.
+
+HEADER:
+x86emu.h
+
+MEMBERS:
+inb - Function to read a byte from an I/O port
+inw - Function to read a word from an I/O port
+inl - Function to read a dword from an I/O port
+outb - Function to write a byte to an I/O port
+outw - Function to write a word to an I/O port
+outl - Function to write a dword to an I/O port
+****************************************************************************/
+typedef struct {
+ u8 (X86APIP inb)(X86EMU_pioAddr addr);
+ u16 (X86APIP inw)(X86EMU_pioAddr addr);
+ u32 (X86APIP inl)(X86EMU_pioAddr addr);
+ void (X86APIP outb)(X86EMU_pioAddr addr, u8 val);
+ void (X86APIP outw)(X86EMU_pioAddr addr, u16 val);
+ void (X86APIP outl)(X86EMU_pioAddr addr, u32 val);
+ } X86EMU_pioFuncs;
+
+/****************************************************************************
+REMARKS:
+Data structure containing ponters to memory access functions used by the
+emulator. This is used so that the user program can hook all memory
+access functions as necessary for the emulator. By default the emulator
+contains simple functions that only access the internal memory of the
+emulator. If you need specialised functions to handle access to different
+types of memory (ie: hardware framebuffer accesses and BIOS memory access
+etc), you will need to override this using the X86EMU_setupMemFuncs
+function.
+
+HEADER:
+x86emu.h
+
+MEMBERS:
+rdb - Function to read a byte from an address
+rdw - Function to read a word from an address
+rdl - Function to read a dword from an address
+wrb - Function to write a byte to an address
+wrw - Function to write a word to an address
+wrl - Function to write a dword to an address
+****************************************************************************/
+typedef struct {
+ u8 (X86APIP rdb)(u32 addr);
+ u16 (X86APIP rdw)(u32 addr);
+ u32 (X86APIP rdl)(u32 addr);
+ void (X86APIP wrb)(u32 addr, u8 val);
+ void (X86APIP wrw)(u32 addr, u16 val);
+ void (X86APIP wrl)(u32 addr, u32 val);
+ } X86EMU_memFuncs;
+
+/****************************************************************************
+ Here are the default memory read and write
+ function in case they are needed as fallbacks.
+***************************************************************************/
+extern u8 X86API rdb(u32 addr);
+extern u16 X86API rdw(u32 addr);
+extern u32 X86API rdl(u32 addr);
+extern void X86API wrb(u32 addr, u8 val);
+extern void X86API wrw(u32 addr, u16 val);
+extern void X86API wrl(u32 addr, u32 val);
+
+#pragma pack()
+
+/*--------------------- type definitions -----------------------------------*/
+
+typedef void (X86APIP X86EMU_intrFuncs)(int num);
+extern X86EMU_intrFuncs _X86EMU_intrTab[256];
+
+/*-------------------------- Function Prototypes --------------------------*/
+
+#ifdef __cplusplus
+extern "C" { /* Use "C" linkage when in C++ mode */
+#endif
+
+void X86EMU_setupMemFuncs(X86EMU_memFuncs *funcs);
+void X86EMU_setupPioFuncs(X86EMU_pioFuncs *funcs);
+void X86EMU_setupIntrFuncs(X86EMU_intrFuncs funcs[]);
+void X86EMU_prepareForInt(int num);
+
+//void X86EMU_setMemBase(void *base, size_t size);
+
+/* decode.c */
+
+void X86EMU_exec(void);
+void X86EMU_halt_sys(void);
+
+#ifdef CONFIG_DEBUG
+#define HALT_SYS() \
+ printk("halt_sys: file %s, line %d\n", __FILE__, __LINE__); \
+ X86EMU_halt_sys();
+#else
+#define HALT_SYS() X86EMU_halt_sys()
+#endif
+
+/* Debug options */
+
+#define DEBUG_DECODE_F 0x000001 /* print decoded instruction */
+#define DEBUG_TRACE_F 0x000002 /* dump regs before/after execution */
+#define DEBUG_STEP_F 0x000004
+#define DEBUG_DISASSEMBLE_F 0x000008
+#define DEBUG_BREAK_F 0x000010
+#define DEBUG_SVC_F 0x000020
+#define DEBUG_FS_F 0x000080
+#define DEBUG_PROC_F 0x000100
+#define DEBUG_SYSINT_F 0x000200 /* bios system interrupts. */
+#define DEBUG_TRACECALL_F 0x000400
+#define DEBUG_INSTRUMENT_F 0x000800
+#define DEBUG_MEM_TRACE_F 0x001000
+#define DEBUG_IO_TRACE_F 0x002000
+#define DEBUG_TRACECALL_REGS_F 0x004000
+#define DEBUG_DECODE_NOPRINT_F 0x008000
+#define DEBUG_SAVE_IP_CS_F 0x010000
+#define DEBUG_TRACEJMP_F 0x020000
+#define DEBUG_TRACEJMP_REGS_F 0x040000
+#define DEBUG_SYS_F (DEBUG_SVC_F|DEBUG_FS_F|DEBUG_PROC_F)
+
+void X86EMU_trace_regs(void);
+void X86EMU_trace_xregs(void);
+void X86EMU_dump_memory(u16 seg, u16 off, u32 amt);
+int X86EMU_trace_on(void);
+int X86EMU_trace_off(void);
+
+#ifdef __cplusplus
+} /* End of "C" linkage for C++ */
+#endif
+
+#endif /* __X86EMU_X86EMU_H */
--- /dev/null
+object pcibios.o
\ No newline at end of file
--- /dev/null
+/*
+ * This software and ancillary information (herein called SOFTWARE )
+ * called LinuxBIOS is made available under the terms described
+ * here. The SOFTWARE has been approved for release with associated
+ * LA-CC Number 00-34 . Unless otherwise indicated, this SOFTWARE has
+ * been authored by an employee or employees of the University of
+ * California, operator of the Los Alamos National Laboratory under
+ * Contract No. W-7405-ENG-36 with the U.S. Department of Energy. The
+ * U.S. Government has rights to use, reproduce, and distribute this
+ * SOFTWARE. The public may copy, distribute, prepare derivative works
+ * and publicly display this SOFTWARE without charge, provided that this
+ * Notice and any statement of authorship are reproduced on all copies.
+ * Neither the Government nor the University makes any warranty, express
+ * or implied, or assumes any liability or responsibility for the use of
+ * this SOFTWARE. If SOFTWARE is modified to produce derivative works,
+ * such modified SOFTWARE should be clearly marked, so as not to confuse
+ * it with the version available from LANL.
+ */
+ /*
+ * This file is part of the coreboot project.
+ *
+ * (c) Copyright 2000, Ron Minnich, Advanced Computing Lab, LANL
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#ifdef CONFIG_COREBOOT_V2
+#include <console/console.h>
+#else
+#include <console.h>
+#endif
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include <x86emu/x86emu.h>
+
+#include "pcibios.h"
+
+int pcibios_handler(void)
+{
+ int ret = 0;
+ struct device *dev = 0;
+
+ switch (X86_AX) {
+ case PCI_BIOS_PRESENT:
+ X86_AH = 0x00; /* no config space/special cycle support */
+ X86_AL = 0x01; /* config mechanism 1 */
+ X86_EDX = 'P' | 'C' << 8 | 'I' << 16 | ' ' << 24;
+ X86_EBX = 0x0210; /* Version 2.10 */
+ X86_ECX = 0xFF00; /* FixME: Max bus number */
+ X86_EFLAGS &= ~FB_CF; /* clear carry flag */
+ ret = 1;
+ break;
+ case FIND_PCI_DEVICE:
+ /* FixME: support SI != 0 */
+#ifdef CONFIG_COREBOOT_V2
+ dev = dev_find_device(X86_DX, X86_CX, dev);
+#else
+ dev = dev_find_pci_device(X86_DX, X86_CX, dev);
+#endif
+ if (dev != 0) {
+ X86_BH = dev->bus->secondary;
+ X86_BL = dev->path.pci.devfn;
+ X86_AH = SUCCESSFUL;
+ X86_EFLAGS &= ~FB_CF; /* clear carry flag */
+ ret = 1;
+ } else {
+ X86_AH = DEVICE_NOT_FOUND;
+ X86_EFLAGS |= FB_CF; /* set carry flag */
+ ret = 0;
+ }
+ break;
+ case FIND_PCI_CLASS_CODE:
+ /* FixME: support SI != 0 */
+ dev = dev_find_class(X86_ECX, dev);
+ if (dev != 0) {
+ X86_BH = dev->bus->secondary;
+ X86_BL = dev->path.pci.devfn;
+ X86_AH = SUCCESSFUL;
+ X86_EFLAGS &= ~FB_CF; /* clear carry flag */
+ ret = 1;
+ } else {
+ X86_AH = DEVICE_NOT_FOUND;
+ X86_EFLAGS |= FB_CF; /* set carry flag */
+ ret = 0;
+ }
+ break;
+ case READ_CONFIG_BYTE:
+ dev = dev_find_slot(X86_BH, X86_BL);
+ if (dev != 0) {
+ X86_CL = pci_read_config8(dev, X86_DI);
+ X86_AH = SUCCESSFUL;
+ X86_EFLAGS &= ~FB_CF; /* clear carry flag */
+ ret = 1;
+ } else {
+ X86_AH = DEVICE_NOT_FOUND;
+ X86_EFLAGS |= FB_CF; /* set carry flag */
+ ret = 0;
+ }
+ break;
+ case READ_CONFIG_WORD:
+ dev = dev_find_slot(X86_BH, X86_BL);
+ if (dev != 0) {
+ X86_CX = pci_read_config16(dev, X86_DI);
+ X86_AH = SUCCESSFUL;
+ X86_EFLAGS &= ~FB_CF; /* clear carry flag */
+ ret = 1;
+ } else {
+ X86_AH = DEVICE_NOT_FOUND;
+ X86_EFLAGS |= FB_CF; /* set carry flag */
+ ret = 0;
+ }
+ break;
+ case READ_CONFIG_DWORD:
+ dev = dev_find_slot(X86_BH, X86_BL);
+ if (dev != 0) {
+ X86_ECX = pci_read_config32(dev, X86_DI);
+ X86_AH = SUCCESSFUL;
+ X86_EFLAGS &= ~FB_CF; /* clear carry flag */
+ ret = 1;
+ } else {
+ X86_AH = DEVICE_NOT_FOUND;
+ X86_EFLAGS |= FB_CF; /* set carry flag */
+ ret = 0;
+ }
+ break;
+ case WRITE_CONFIG_BYTE:
+ dev = dev_find_slot(X86_BH, X86_BL);
+ if (dev != 0) {
+ pci_write_config8(dev, X86_DI, X86_CL);
+ X86_AH = SUCCESSFUL;
+ X86_EFLAGS &= ~FB_CF; /* clear carry flag */
+ ret = 1;
+ } else {
+ X86_AH = DEVICE_NOT_FOUND;
+ X86_EFLAGS |= FB_CF; /* set carry flag */
+ ret = 0;
+ }
+ break;
+ case WRITE_CONFIG_WORD:
+ dev = dev_find_slot(X86_BH, X86_BL);
+ if (dev != 0) {
+ pci_write_config16(dev, X86_DI, X86_CX);
+ X86_AH = SUCCESSFUL;
+ X86_EFLAGS &= ~FB_CF; /* clear carry flag */
+ ret = 1;
+ } else {
+ X86_AH = DEVICE_NOT_FOUND;
+ X86_EFLAGS |= FB_CF; /* set carry flag */
+ ret = 0;
+ }
+ break;
+ case WRITE_CONFIG_DWORD:
+ dev = dev_find_slot(X86_BH, X86_BL);
+ if (dev != 0) {
+ pci_write_config16(dev, X86_DI, X86_ECX);
+ X86_AH = SUCCESSFUL;
+ X86_EFLAGS &= ~FB_CF; /* clear carry flag */
+ ret = 1;
+ } else {
+ X86_AH = DEVICE_NOT_FOUND;
+ X86_EFLAGS |= FB_CF; /* set carry flag */
+ ret = 0;
+ }
+ break;
+ default:
+ X86_AH = FUNC_NOT_SUPPORTED;
+ X86_EFLAGS |= FB_CF;
+ break;
+ }
+
+ return ret;
+}
--- /dev/null
+/*
+ * This software and ancillary information (herein called SOFTWARE )
+ * called LinuxBIOS is made available under the terms described
+ * here. The SOFTWARE has been approved for release with associated
+ * LA-CC Number 00-34 . Unless otherwise indicated, this SOFTWARE has
+ * been authored by an employee or employees of the University of
+ * California, operator of the Los Alamos National Laboratory under
+ * Contract No. W-7405-ENG-36 with the U.S. Department of Energy. The
+ * U.S. Government has rights to use, reproduce, and distribute this
+ * SOFTWARE. The public may copy, distribute, prepare derivative works
+ * and publicly display this SOFTWARE without charge, provided that this
+ * Notice and any statement of authorship are reproduced on all copies.
+ * Neither the Government nor the University makes any warranty, express
+ * or implied, or assumes any liability or responsibility for the use of
+ * this SOFTWARE. If SOFTWARE is modified to produce derivative works,
+ * such modified SOFTWARE should be clearly marked, so as not to confuse
+ * it with the version available from LANL.
+ */
+ /*
+ * This file is part of the coreboot project.
+ *
+ * (c) Copyright 2000, Ron Minnich, Advanced Computing Lab, LANL
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef PCI_BIOS_H
+#define PCI_BIOS_H
+
+enum {
+ PCI_BIOS_PRESENT = 0xB101,
+ FIND_PCI_DEVICE = 0xB102,
+ FIND_PCI_CLASS_CODE = 0xB103,
+ GENERATE_SPECIAL_CYCLE = 0xB106,
+ READ_CONFIG_BYTE = 0xB108,
+ READ_CONFIG_WORD = 0xB109,
+ READ_CONFIG_DWORD = 0xB10A,
+ WRITE_CONFIG_BYTE = 0xB10B,
+ WRITE_CONFIG_WORD = 0xB10C,
+ WRITE_CONFIG_DWORD = 0xB10D,
+ GET_IRQ_ROUTING_OPTIONS = 0xB10E,
+ SET_PCI_IRQ = 0xB10F
+};
+
+enum {
+ SUCCESSFUL = 0x00,
+ FUNC_NOT_SUPPORTED = 0x81,
+ BAD_VENDOR_ID = 0x83,
+ DEVICE_NOT_FOUND = 0x86,
+ BAD_REGISTER_NUMBER = 0x87,
+ SET_FAILED = 0x88,
+ BUFFER_TOO_SMALL = 0x89
+};
+
+int pcibios_handler(void);
+
+#endif /* PCI_BIOS_H */
+
--- /dev/null
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2009 coresystems GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <device/pci.h>
+#include <string.h>
+
+#ifdef CONFIG_COREBOOT_V2
+#include <arch/io.h>
+#include <console/console.h>
+#define printk(x...) do_printk(x)
+#else
+#include <console.h>
+#endif
+
+#define REALMODE_BASE ((void *)0x500)
+
+struct realmode_idt {
+ u16 offset, cs;
+};
+
+struct eregs {
+ uint32_t eax, ecx, edx, ebx, esp, ebp, esi, edi;
+ uint32_t vector;
+ uint32_t error_code;
+ uint32_t eip;
+ uint32_t cs;
+ uint32_t eflags;
+};
+
+void x86_exception(struct eregs *info);
+
+extern unsigned char __idt_handler, __idt_handler_size;
+extern unsigned char __realmode_code, __realmode_code_size;
+extern unsigned char __run_optionrom, __run_interrupt;
+
+void (*run_optionrom)(u32 devfn) = (void *)&__run_optionrom;
+void (*vga_enable_console)(void) = (void *)&__run_interrupt;
+
+int (*intXX_handler[256])(struct eregs *regs) = { NULL };
+
+static int intXX_exception_handler(struct eregs *regs)
+{
+ printk(BIOS_INFO, "Oops, exception %d while executing option rom\n",
+ regs->vector);
+ x86_exception(regs); // Call coreboot exception handler
+
+ return 0; // Never returns?
+}
+
+static int intXX_unknown_handler(struct eregs *regs)
+{
+ printk(BIOS_INFO, "Unsupported software interrupt #0x%x\n",
+ regs->vector);
+
+ return -1;
+}
+
+int int12_handler(struct eregs *regs);
+int int15_handler(struct eregs *regs);
+int int1a_handler(struct eregs *regs);
+
+static void setup_interrupt_handlers(void)
+{
+ int i;
+
+ /* The first 16 intXX functions are not BIOS services,
+ * but the CPU-generated exceptions ("hardware interrupts")
+ */
+ for (i = 0; i < 0x10; i++)
+ intXX_handler[i] = &intXX_exception_handler;
+
+ /* Mark all other intXX calls as unknown first */
+ for (i = 0x10; i < 0x100; i++)
+ intXX_handler[i] = &intXX_unknown_handler;
+
+ /* Now set the default functions that are actually
+ * needed to initialize the option roms. This is very
+ * slick, as it allows us to implement mainboard specific
+ * interrupt handlers, such as the int15
+ */
+ intXX_handler[0x12] = &int12_handler;
+ intXX_handler[0x15] = &int15_handler;
+ intXX_handler[0x1a] = &int1a_handler;
+}
+
+static void write_idt_stub(void *target, u8 intnum)
+{
+ unsigned char *codeptr;
+ codeptr = (unsigned char *) target;
+ memcpy(codeptr, &__idt_handler, (size_t)&__idt_handler_size);
+ codeptr[3] = intnum; /* modify int# in the code stub. */
+}
+
+static void setup_realmode_idt(void)
+{
+ struct realmode_idt *idts = (struct realmode_idt *) 0;
+ int i;
+
+ /* Copy IDT stub code for each interrupt. This might seem wasteful
+ * but it is really simple
+ */
+ for (i = 0; i < 256; i++) {
+ idts[i].cs = 0;
+ idts[i].offset = 0x1000 + (i * (u32)&__idt_handler_size);
+ write_idt_stub((void *)((u32 )idts[i].offset), i);
+ }
+
+ /* Many option ROMs use the hard coded interrupt entry points in the
+ * system bios. So install them at the known locations.
+ * Only need int10 so far.
+ */
+
+ /* int42 is the relocated int10 */
+ write_idt_stub((void *)0xff065, 0x42);
+}
+
+void run_bios(struct device *dev, unsigned long addr)
+{
+ int i;
+
+ /* clear vga bios data area */
+ for (i = 0x400; i < 0x500; i++) {
+ *(unsigned char *) i = 0;
+ }
+
+ /* Set up C interrupt handlers */
+ setup_interrupt_handlers();
+
+ /* Setting up realmode IDT */
+ setup_realmode_idt();
+
+ memcpy(REALMODE_BASE, &__realmode_code, (size_t)&__realmode_code_size);
+ printk(BIOS_SPEW, "Real mode stub @%p: %d bytes\n", REALMODE_BASE,
+ (u32)&__realmode_code_size);
+
+ printk(BIOS_DEBUG, "Calling Option ROM...\n");
+ run_optionrom((dev->bus->secondary << 8) | dev->path.pci.devfn);
+ printk(BIOS_DEBUG, "... Option ROM returned.\n");
+}
+
+int __attribute__((regparm(0))) interrupt_handler(u32 intnumber,
+ u32 gsfs, u32 dses,
+ u32 edi, u32 esi,
+ u32 ebp, u32 esp,
+ u32 ebx, u32 edx,
+ u32 ecx, u32 eax,
+ u32 cs_ip, u16 stackflags)
+{
+ u32 ip;
+ u32 cs;
+ u32 flags;
+ int ret = -1;
+ struct eregs reg_info;
+
+ ip = cs_ip & 0xffff;
+ cs = cs_ip >> 16;
+ flags = stackflags;
+
+ printk(BIOS_DEBUG, "oprom: INT# 0x%x\n", intnumber);
+ printk(BIOS_DEBUG, "oprom: eax: %08x ebx: %08x ecx: %08x edx: %08x\n",
+ eax, ebx, ecx, edx);
+ printk(BIOS_DEBUG, "oprom: ebp: %08x esp: %08x edi: %08x esi: %08x\n",
+ ebp, esp, edi, esi);
+ printk(BIOS_DEBUG, "oprom: ip: %04x cs: %04x flags: %08x\n",
+ ip, cs, flags);
+
+ // Fetch arguments from the stack and put them into
+ // a structure that we want to pass on to our sub interrupt
+ // handlers.
+ reg_info = (struct eregs) {
+ .eax=eax,
+ .ecx=ecx,
+ .edx=edx,
+ .ebx=ebx,
+ .esp=esp,
+ .ebp=ebp,
+ .esi=esi,
+ .edi=edi,
+ .vector=intnumber,
+ .error_code=0, // ??
+ .eip=ip,
+ .cs=cs,
+ .eflags=flags // ??
+ };
+
+ // Call the interrupt handler for this int#
+ ret = intXX_handler[intnumber](®_info);
+
+ // Put registers back on the stack. The assembler code
+ // will later pop them.
+ // What happens here is that we force (volatile!) changing
+ // the values of the parameters of this function. We do this
+ // because we know that they stay alive on the stack after
+ // we leave this function. Don't say this is bollocks.
+ *(volatile u32 *)&eax = reg_info.eax;
+ *(volatile u32 *)&ecx = reg_info.ecx;
+ *(volatile u32 *)&edx = reg_info.edx;
+ *(volatile u32 *)&ebx = reg_info.ebx;
+ *(volatile u32 *)&esi = reg_info.esi;
+ *(volatile u32 *)&edi = reg_info.edi;
+ flags = reg_info.eflags;
+
+ /* Pass errors back to our caller via the CARRY flag */
+ if (ret) {
+ printk(BIOS_DEBUG,"error!\n");
+ flags |= 1; // error: set carry
+ }else{
+ flags &= ~1; // no error: clear carry
+ }
+ *(volatile u16 *)&stackflags = flags;
+
+ return ret;
+}
+
--- /dev/null
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2009 coresystems GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#define REALMODE_BASE 0x500
+#define RELOCATED(x) (x - __realmode_code + REALMODE_BASE)
+
+/* CR0 bits */
+#define PE (1 << 0)
+
+/* This is the intXX interrupt handler stub code. It gets copied
+ * to the IDT and to some fixed addresses in the F segment. Before
+ * the code can used, it gets patched up by the C function copying
+ * it: byte 3 (the $0 in movb $0, %al) is overwritten with the int#.
+ */
+
+ .code16
+ .globl __idt_handler
+__idt_handler:
+ pushal
+ movb $0, %al /* This instruction gets modified */
+ ljmp $0, $__interrupt_handler_16bit
+ .globl __idt_handler_size
+__idt_handler_size = ( . - __idt_handler)
+
+
+/* In order to be independent of coreboot's position in RAM
+ * we relocate a part of the code to the low megabyte, so the
+ * CPU can use it in real-mode. This code lives at __realmode_code.
+ */
+ .globl __realmode_code
+__realmode_code:
+
+/* Realmode IDT pointer structure. */
+ .globl __realmode_idt
+__realmode_idt = RELOCATED(.)
+ .word 1023 /* 16-bit limit */
+ .long 0 /* 24-bit base */
+ .word 0
+
+/* Preserve old stack */
+__stack = RELOCATED(.)
+ .long 0
+
+ .code32
+ .globl __run_optionrom
+__run_optionrom = RELOCATED(.)
+ /* save all registers to the stack */
+ pushal
+
+ /* Move the protected mode stack to a safe place */
+ mov %esp, __stack
+
+ /* Get devfn into %ecx */
+ movl %esp, %ebp
+ // FIXME: Should this function be called with regparm=0?
+ movl 8(%ebp), %ecx
+
+ /* Activate the right segment descriptor real mode. */
+ ljmp $0x28, $RELOCATED(1f)
+1:
+.code16
+ /* 16 bit code from here on... */
+
+ /* Load the segment registers w/ properly configured
+ * segment descriptors. They will retain these
+ * configurations (limits, writability, etc.) once
+ * protected mode is turned off.
+ */
+ mov $0x30, %ax
+ mov %ax, %ds
+ mov %ax, %es
+ mov %ax, %fs
+ mov %ax, %gs
+ mov %ax, %ss
+
+ /* Turn off protection */
+ movl %cr0, %eax
+ andl $~PE, %eax
+ movl %eax, %cr0
+
+ /* Now really going into real mode */
+ ljmp $0, $RELOCATED(1f)
+1:
+ /* Setup a stack: Put the stack at the end of page zero.
+ * That way we can easily share it between real and
+ * protected, since the 16-bit ESP at segment 0 will
+ * work for any case. */
+ mov $0x0, %ax
+ mov %ax, %ss
+ movl $0x1000, %eax
+ movl %eax, %esp
+
+ /* Load our 16 bit idt */
+ xor %ax, %ax
+ mov %ax, %ds
+ lidt __realmode_idt
+
+ /* Set all segments to 0x0000, ds to 0x0040 */
+ mov %ax, %es
+ mov %ax, %fs
+ mov %ax, %gs
+ mov $0x40, %ax
+ mov %ax, %ds
+ mov %cx, %ax // restore ax
+
+ /* ************************************ */
+ // TODO this will not work for non-VGA option ROMs
+ /* run VGA BIOS at 0xc000:0003 */
+ lcall $0xc000, $0x0003
+ /* ************************************ */
+
+ /* If we got here, just about done.
+ * Need to get back to protected mode
+ */
+ movl %cr0, %eax
+ orl $PE, %eax
+ movl %eax, %cr0
+
+ /* Now that we are in protected mode
+ * jump to a 32 bit code segment.
+ */
+ data32 ljmp $0x10, $RELOCATED(1f)
+1:
+ .code32
+ movw $0x18, %ax
+ mov %ax, %ds
+ mov %ax, %es
+ mov %ax, %fs
+ mov %ax, %gs
+ mov %ax, %ss
+
+ /* restore proper idt */
+ lidt idtarg
+
+ /* and exit */
+ mov __stack, %esp
+ popal
+ ret
+
+ .globl __run_interrupt
+__run_interrupt = RELOCATED(.)
+
+ /* paranoia -- does ecx get saved? not sure. This is
+ * the easiest safe thing to do. */
+ pushal
+ /* save the stack */
+ mov %esp, __stack
+
+
+ /* This configures CS properly for real mode. */
+ ljmp $0x28, $RELOCATED(1f)
+1:
+ .code16 /* 16 bit code from here on... */
+
+ // CONFIG_DEBUG
+ movb $0xec, %al
+ outb %al, $0x80
+
+ /* Load the segment registers w/ properly configured segment
+ * descriptors. They will retain these configurations (limits,
+ * writability, etc.) once protected mode is turned off.
+ */
+ mov $0x30, %ax
+ mov %ax, %ds
+ mov %ax, %es
+ mov %ax, %fs
+ mov %ax, %gs
+ mov %ax, %ss
+
+ /* Turn off protected mode */
+ movl %cr0, %eax
+ andl $~PE, %eax
+ movl %eax, %cr0
+
+ /* Now really going into real mode */
+ data32 ljmp $0, $RELOCATED(1f)
+1:
+
+ /* put the stack at the end of page zero.
+ * that way we can easily share it between real and protected,
+ * since the 16-bit ESP at segment 0 will work for any case.
+ */
+ /* setup a stack */
+ mov $0x0, %ax
+ mov %ax, %ss
+ movl $0x1000, %eax
+ movl %eax, %esp
+
+ /* Load 16-bit intXX IDT */
+ xor %ax, %ax
+ mov %ax, %ds
+ lidt __realmode_idt
+
+ /* Set all segments to 0x0000 */
+ mov %ax, %ds
+ mov %ax, %es
+ mov %ax, %fs
+ mov %ax, %gs
+
+ /* Call VGA BIOS int10 function 0x4f14 to enable main console
+ * Epia-M does not always autosence the main console so forcing
+ * it on is good.
+ */
+
+ /* Ask VGA option rom to enable main console */
+ movw $0x4f14,%ax
+ movw $0x8003,%bx
+ movw $1, %cx
+ movw $0, %dx
+ movw $0, %di
+ int $0x10
+
+ /* Ok, the job is done, now go back to protected mode coreboot */
+ movl %cr0, %eax
+ orl $PE, %eax
+ movl %eax, %cr0
+
+ /* Now that we are in protected mode jump to a 32-bit code segment. */
+ data32 ljmp $0x10, $RELOCATED(1f)
+1:
+ .code32
+ movw $0x18, %ax
+ mov %ax, %ds
+ mov %ax, %es
+ mov %ax, %fs
+ mov %ax, %gs
+ mov %ax, %ss
+
+ /* restore coreboot's 32-bit IDT */
+ lidt idtarg
+
+ /* Exit */
+ mov __stack, %esp
+ popal
+ ret
+
+/* This is the 16-bit interrupt entry point called by the IDT stub code.
+ * Before this code code is called, %eax is pushed to the stack, and the
+ * interrupt number is loaded into %al
+ */
+ .code16
+__interrupt_handler_16bit = RELOCATED(.)
+ push %ds
+ push %es
+ push %fs
+ push %gs
+
+ /* Clean up the interrupt number. We could have done this in the stub,
+ * but it would have cost 2 more bytes per stub entry.
+ */
+ andl $0xff, %eax
+ pushl %eax /* ... and make it the first parameter */
+
+ /* Switch to protected mode */
+ movl %cr0, %eax
+ orl $PE, %eax
+ movl %eax, %cr0
+
+ /* ... and jump to a 32 bit code segment. */
+ data32 ljmp $0x10, $RELOCATED(1f)
+1:
+ .code32
+ movw $0x18, %ax
+ mov %ax, %ds
+ mov %ax, %es
+ mov %ax, %fs
+ mov %ax, %gs
+ mov %ax, %ss
+
+ lidt idtarg
+
+ /* Call the C interrupt handler */
+ movl $interrupt_handler, %eax
+ call *%eax
+
+ /* Now return to real mode ... */
+ ljmp $0x28, $RELOCATED(1f)
+1:
+ .code16
+ /* Load the segment registers with properly configured segment
+ * descriptors. They will retain these configurations (limits,
+ * writability, etc.) once protected mode is turned off.
+ */
+ mov $0x30, %ax
+ mov %ax, %ds
+ mov %ax, %es
+ mov %ax, %fs
+ mov %ax, %gs
+ mov %ax, %ss
+
+ /* Disable Protected Mode */
+ movl %cr0, %eax
+ andl $~PE, %eax
+ movl %eax, %cr0
+
+ /* Now really going into real mode */
+ ljmp $0, $RELOCATED(1f)
+1:
+ /* Restore real-mode stack segment */
+ mov $0x0, %ax
+ mov %ax, %ss
+
+ /* Restore 16-bit IDT */
+ xor %ax, %ax
+ mov %ax, %ds
+ lidt __realmode_idt
+
+ /* Set up our segment registers to segment 0x0000 */
+ mov %ax, %es
+ mov %ax, %fs
+ mov %ax, %gs
+ mov $0x40, %ax
+ mov %ax, %ds
+
+ /* Restore all registers, including those
+ * manipulated by the C handler
+ */
+ popl %eax
+ pop %gs
+ pop %fs
+ pop %es
+ pop %ds
+ popal
+ iret
+
+ .globl __realmode_code_size
+__realmode_code_size = (. - __realmode_code)
+
+ .code32
--- /dev/null
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2001 Ronald G. Minnich
+ * Copyright (C) 2005 Nick.Barker9@btinternet.com
+ * Copyright (C) 2007-2009 coresystems GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include <string.h>
+#ifdef CONFIG_COREBOOT_V2
+#include <console/console.h>
+#include <arch/io.h>
+#define printk(x...) do_printk(x)
+#else
+#include <console.h>
+#include <io.h>
+#endif
+
+struct eregs {
+ uint32_t eax, ecx, edx, ebx, esp, ebp, esi, edi;
+ uint32_t vector;
+ uint32_t error_code;
+ uint32_t eip;
+ uint32_t cs;
+ uint32_t eflags;
+};
+
+enum {
+ CHECK = 0xb001,
+ FINDDEV = 0xb102,
+ READCONFBYTE = 0xb108,
+ READCONFWORD = 0xb109,
+ READCONFDWORD = 0xb10a,
+ WRITECONFBYTE = 0xb10b,
+ WRITECONFWORD = 0xb10c,
+ WRITECONFDWORD = 0xb10d
+};
+
+// errors go in AH. Just set these up so that word assigns
+// will work. KISS.
+enum {
+ PCIBIOS_NODEV = 0x8600,
+ PCIBIOS_BADREG = 0x8700
+};
+
+int int12_handler(struct eregs *regs)
+{
+ regs->eax = 64 * 1024;
+ return 0;
+}
+
+int int1a_handler(struct eregs *regs)
+{
+ unsigned short func = (unsigned short) regs->eax;
+ int retval = 0;
+ unsigned short devid, vendorid, devfn;
+ /* Use short to get rid of gabage in upper half of 32-bit register */
+ short devindex;
+ unsigned char bus;
+ struct device *dev;
+
+ switch(func) {
+ case CHECK:
+ regs->edx = 0x4350;
+ regs->ecx = 0x2049;
+ retval = 0;
+ break;
+ case FINDDEV:
+ {
+ devid = regs->ecx;
+ vendorid = regs->edx;
+ devindex = regs->esi;
+ dev = 0;
+#ifdef CONFIG_COREBOOT_V2
+ while ((dev = dev_find_device(vendorid, devid, dev))) {
+#else
+ while ((dev = dev_find_pci_device(vendorid, devid, dev))) {
+#endif
+ if (devindex <= 0)
+ break;
+ devindex--;
+ }
+ if (dev) {
+ unsigned short busdevfn;
+ regs->eax = 0;
+ // busnum is an unsigned char;
+ // devfn is an int, so we mask it off.
+ busdevfn = (dev->bus->secondary << 8)
+ | (dev->path.pci.devfn & 0xff);
+ printk(BIOS_DEBUG, "0x%x: return 0x%x\n", func, busdevfn);
+ regs->ebx = busdevfn;
+ retval = 0;
+ } else {
+ regs->eax = PCIBIOS_NODEV;
+ retval = -1;
+ }
+ }
+ break;
+ case READCONFDWORD:
+ case READCONFWORD:
+ case READCONFBYTE:
+ case WRITECONFDWORD:
+ case WRITECONFWORD:
+ case WRITECONFBYTE:
+ {
+ unsigned long dword;
+ unsigned short word;
+ unsigned char byte;
+ unsigned char reg;
+
+ devfn = regs->ebx & 0xff;
+ bus = regs->ebx >> 8;
+ reg = regs->edi;
+ dev = dev_find_slot(bus, devfn);
+ if (! dev) {
+ printk(BIOS_DEBUG, "0x%x: BAD DEVICE bus %d devfn 0x%x\n", func, bus, devfn);
+ // idiots. the pcibios guys assumed you'd never pass a bad bus/devfn!
+ regs->eax = PCIBIOS_BADREG;
+ retval = -1;
+ }
+ switch(func) {
+ case READCONFBYTE:
+ byte = pci_read_config8(dev, reg);
+ regs->ecx = byte;
+ break;
+ case READCONFWORD:
+ word = pci_read_config16(dev, reg);
+ regs->ecx = word;
+ break;
+ case READCONFDWORD:
+ dword = pci_read_config32(dev, reg);
+ regs->ecx = dword;
+ break;
+ case WRITECONFBYTE:
+ byte = regs->ecx;
+ pci_write_config8(dev, reg, byte);
+ break;
+ case WRITECONFWORD:
+ word = regs->ecx;
+ pci_write_config16(dev, reg, word);
+ break;
+ case WRITECONFDWORD:
+ dword = regs->ecx;
+ pci_write_config32(dev, reg, dword);
+ break;
+ }
+
+ if (retval)
+ retval = PCIBIOS_BADREG;
+ printk(BIOS_DEBUG, "0x%x: bus %d devfn 0x%x reg 0x%x val 0x%x\n",
+ func, bus, devfn, reg, regs->ecx);
+ regs->eax = 0;
+ retval = 0;
+ }
+ break;
+ default:
+ printk(BIOS_ERR, "UNSUPPORTED PCIBIOS FUNCTION 0x%x\n", func);
+ break;
+ }
+
+ return retval;
+}
+
+int int15_handler(struct eregs *regs)
+{
+ int res = -1;
+
+ /* This int15 handler is VIA Tech. specific. Other chipsets need other
+ * handlers. The right way to do this is to move this handler code into
+ * the mainboard or northbridge code.
+ */
+ switch (regs->eax & 0xffff) {
+ case 0x5f19:
+ break;
+ case 0x5f18:
+ regs->eax = 0x5f;
+ // MCLK = 133, 32M frame buffer, 256 M main memory
+ regs->ebx = 0x545;
+ regs->ecx = 0x060;
+ res = 0;
+ break;
+ case 0x5f00:
+ regs->eax = 0x8600;
+ break;
+ case 0x5f01:
+ regs->eax = 0x5f;
+ regs->ecx = (regs->ecx & 0xffffff00 ) | 2; // panel type = 2 = 1024 * 768
+ res = 0;
+ break;
+ case 0x5f02:
+ regs->eax = 0x5f;
+ regs->ebx = (regs->ebx & 0xffff0000) | 2;
+ regs->ecx = (regs->ecx & 0xffff0000) | 0x401; // PAL + crt only
+ regs->edx = (regs->edx & 0xffff0000) | 0; // TV Layout - default
+ res = 0;
+ break;
+ case 0x5f0f:
+ regs->eax = 0x860f;
+ break;
+ /* And now Intel IGD code */
+#define BOOT_DISPLAY_CRT (1 << 0)
+#define BOOT_DISPLAY_TV (1 << 1)
+#define BOOT_DISPLAY_EFP (1 << 2)
+#define BOOT_DISPLAY_LCD (1 << 3)
+#define BOOT_DISPLAY_CRT2 (1 << 4)
+#define BOOT_DISPLAY_TV2 (1 << 5)
+#define BOOT_DISPLAY_EFP2 (1 << 6)
+#define BOOT_DISPLAY_LCD2 (1 << 7)
+
+ case 0x5f35:
+ regs->eax = 0x5f;
+ regs->ecx = BOOT_DISPLAY_LCD|BOOT_DISPLAY_CRT;
+ res = 0;
+ break;
+ case 0x5f40:
+ regs->eax = 0x5f;
+ regs->ecx = 3; // This is mainboard specific
+ printk(BIOS_DEBUG, "DISPLAY=%x\n", regs->ecx);
+ res = 0;
+ break;
+ default:
+ printk(BIOS_DEBUG, "Unknown INT15 function %04x!\n",
+ regs->eax & 0xffff);
+ }
+
+ return res;
+}
+
--- /dev/null
+object debug.o
+object decode.o
+object fpu.o
+object ops.o
+object ops2.o
+object prim_ops.o
+object sys.o
--- /dev/null
+ License information
+ -------------------
+
+The x86emu library is under a BSD style license, comaptible
+with the XFree86 and X licenses used by XFree86. The
+original x86emu libraries were under the GNU General Public
+License. Due to license incompatibilities between the GPL
+and the XFree86 license, the original authors of the code
+decided to allow a license change. If you have submitted
+code to the original x86emu project, and you don't agree
+with the license change, please contact us and let you
+know. Your code will be removed to comply with your wishes.
+
+If you have any questions about this, please send email to
+x86emu@linuxlabs.com or KendallB@scitechsoft.com for
+clarification.
+
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1991-2004 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: This file contains the code to handle debugging of the
+* emulator.
+*
+****************************************************************************/
+
+#include "x86emui.h"
+// #include <stdarg.h>
+
+/*----------------------------- Implementation ----------------------------*/
+
+#ifdef CONFIG_DEBUG
+
+static void print_encoded_bytes (u16 s, u16 o);
+static void print_decoded_instruction (void);
+int parse_line (char *s, int *ps, int *n);
+
+/* should look something like debug's output. */
+void X86EMU_trace_regs (void)
+{
+ if (DEBUG_TRACE()) {
+ if (M.x86.mode & (SYSMODE_PREFIX_DATA | SYSMODE_PREFIX_ADDR)) {
+ x86emu_dump_xregs();
+ } else {
+ x86emu_dump_regs();
+ }
+ }
+ if (DEBUG_DECODE() && ! DEBUG_DECODE_NOPRINT()) {
+ printk("%04x:%04x ",M.x86.saved_cs, M.x86.saved_ip);
+ print_encoded_bytes( M.x86.saved_cs, M.x86.saved_ip);
+ print_decoded_instruction();
+ }
+}
+
+void X86EMU_trace_xregs (void)
+{
+ if (DEBUG_TRACE()) {
+ x86emu_dump_xregs();
+ }
+}
+
+void x86emu_just_disassemble (void)
+{
+ /*
+ * This routine called if the flag DEBUG_DISASSEMBLE is set kind
+ * of a hack!
+ */
+ printk("%04x:%04x ",M.x86.saved_cs, M.x86.saved_ip);
+ print_encoded_bytes( M.x86.saved_cs, M.x86.saved_ip);
+ print_decoded_instruction();
+}
+
+void disassemble_forward (u16 seg, u16 off, int n)
+{
+ X86EMU_sysEnv tregs;
+ int i;
+ u8 op1;
+ /*
+ * hack, hack, hack. What we do is use the exact machinery set up
+ * for execution, except that now there is an additional state
+ * flag associated with the "execution", and we are using a copy
+ * of the register struct. All the major opcodes, once fully
+ * decoded, have the following two steps: TRACE_REGS(r,m);
+ * SINGLE_STEP(r,m); which disappear if CONFIG_DEBUG is not defined to
+ * the preprocessor. The TRACE_REGS macro expands to:
+ *
+ * if (debug&DEBUG_DISASSEMBLE)
+ * {just_disassemble(); goto EndOfInstruction;}
+ * if (debug&DEBUG_TRACE) trace_regs(r,m);
+ *
+ * ...... and at the last line of the routine.
+ *
+ * EndOfInstruction: end_instr();
+ *
+ * Up to the point where TRACE_REG is expanded, NO modifications
+ * are done to any register EXCEPT the IP register, for fetch and
+ * decoding purposes.
+ *
+ * This was done for an entirely different reason, but makes a
+ * nice way to get the system to help debug codes.
+ */
+ tregs = M;
+ tregs.x86.R_IP = off;
+ tregs.x86.R_CS = seg;
+
+ /* reset the decoding buffers */
+ tregs.x86.enc_str_pos = 0;
+ tregs.x86.enc_pos = 0;
+
+ /* turn on the "disassemble only, no execute" flag */
+ tregs.x86.debug |= DEBUG_DISASSEMBLE_F;
+
+ /* DUMP NEXT n instructions to screen in straight_line fashion */
+ /*
+ * This looks like the regular instruction fetch stream, except
+ * that when this occurs, each fetched opcode, upon seeing the
+ * DEBUG_DISASSEMBLE flag set, exits immediately after decoding
+ * the instruction. XXX --- CHECK THAT MEM IS NOT AFFECTED!!!
+ * Note the use of a copy of the register structure...
+ */
+ for (i=0; i<n; i++) {
+ op1 = (*sys_rdb)(((u32)M.x86.R_CS<<4) + (M.x86.R_IP++));
+ (x86emu_optab[op1])(op1);
+ }
+ /* end major hack mode. */
+}
+
+void x86emu_check_ip_access (void)
+{
+ /* NULL as of now */
+}
+
+void x86emu_check_sp_access (void)
+{
+}
+
+void x86emu_check_mem_access (u32 dummy)
+{
+ /* check bounds, etc */
+}
+
+void x86emu_check_data_access (uint dummy1, uint dummy2)
+{
+ /* check bounds, etc */
+}
+
+void x86emu_inc_decoded_inst_len (int x)
+{
+ M.x86.enc_pos += x;
+}
+
+void x86emu_decode_printf (char *x)
+{
+ sprintf(M.x86.decoded_buf+M.x86.enc_str_pos,"%s",x);
+ M.x86.enc_str_pos += strlen(x);
+}
+
+void x86emu_decode_printf2 (char *x, int y)
+{
+ char temp[100];
+ sprintf(temp,x,y);
+ sprintf(M.x86.decoded_buf+M.x86.enc_str_pos,"%s",temp);
+ M.x86.enc_str_pos += strlen(temp);
+}
+
+void x86emu_end_instr (void)
+{
+ M.x86.enc_str_pos = 0;
+ M.x86.enc_pos = 0;
+}
+
+static void print_encoded_bytes (u16 s, u16 o)
+{
+ int i;
+ char buf1[64];
+ for (i=0; i< M.x86.enc_pos; i++) {
+ sprintf(buf1+2*i,"%02x", fetch_data_byte_abs(s,o+i));
+ }
+ printk("%-20s ",buf1);
+}
+
+static void print_decoded_instruction (void)
+{
+ printk("%s", M.x86.decoded_buf);
+}
+
+void x86emu_print_int_vect (u16 iv)
+{
+ u16 seg,off;
+
+ if (iv > 256) return;
+ seg = fetch_data_word_abs(0,iv*4);
+ off = fetch_data_word_abs(0,iv*4+2);
+ printk("%04x:%04x ", seg, off);
+}
+
+void X86EMU_dump_memory (u16 seg, u16 off, u32 amt)
+{
+ u32 start = off & 0xfffffff0;
+ u32 end = (off+16) & 0xfffffff0;
+ u32 i;
+ u32 current;
+
+ current = start;
+ while (end <= off + amt) {
+ printk("%04x:%04x ", seg, start);
+ for (i=start; i< off; i++)
+ printk(" ");
+ for ( ; i< end; i++)
+ printk("%02x ", fetch_data_byte_abs(seg,i));
+ printk("\n");
+ start = end;
+ end = start + 16;
+ }
+}
+
+void x86emu_single_step (void)
+{
+#if 0
+ char s[1024];
+ int ps[10];
+ int ntok;
+ int cmd;
+ int done;
+ int segment;
+ int offset;
+ static int breakpoint;
+ static int noDecode = 1;
+
+ char *p;
+
+ if (DEBUG_BREAK()) {
+ if (M.x86.saved_ip != breakpoint) {
+ return;
+ } else {
+ M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F;
+ M.x86.debug |= DEBUG_TRACE_F;
+ M.x86.debug &= ~DEBUG_BREAK_F;
+ print_decoded_instruction ();
+ X86EMU_trace_regs();
+ }
+ }
+ done=0;
+ offset = M.x86.saved_ip;
+ while (!done) {
+ printk("-");
+ p = fgets(s, 1023, stdin);
+ cmd = parse_line(s, ps, &ntok);
+ switch(cmd) {
+ case 'u':
+ disassemble_forward(M.x86.saved_cs,(u16)offset,10);
+ break;
+ case 'd':
+ if (ntok == 2) {
+ segment = M.x86.saved_cs;
+ offset = ps[1];
+ X86EMU_dump_memory(segment,(u16)offset,16);
+ offset += 16;
+ } else if (ntok == 3) {
+ segment = ps[1];
+ offset = ps[2];
+ X86EMU_dump_memory(segment,(u16)offset,16);
+ offset += 16;
+ } else {
+ segment = M.x86.saved_cs;
+ X86EMU_dump_memory(segment,(u16)offset,16);
+ offset += 16;
+ }
+ break;
+ case 'c':
+ M.x86.debug ^= DEBUG_TRACECALL_F;
+ break;
+ case 's':
+ M.x86.debug ^= DEBUG_SVC_F | DEBUG_SYS_F | DEBUG_SYSINT_F;
+ break;
+ case 'r':
+ X86EMU_trace_regs();
+ break;
+ case 'x':
+ X86EMU_trace_xregs();
+ break;
+ case 'g':
+ if (ntok == 2) {
+ breakpoint = ps[1];
+ if (noDecode) {
+ M.x86.debug |= DEBUG_DECODE_NOPRINT_F;
+ } else {
+ M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F;
+ }
+ M.x86.debug &= ~DEBUG_TRACE_F;
+ M.x86.debug |= DEBUG_BREAK_F;
+ done = 1;
+ }
+ break;
+ case 'q':
+ M.x86.debug |= DEBUG_EXIT;
+ return;
+ case 'P':
+ noDecode = (noDecode)?0:1;
+ printk("Toggled decoding to %s\n",(noDecode)?"FALSE":"TRUE");
+ break;
+ case 't':
+ case 0:
+ done = 1;
+ break;
+ }
+ }
+#endif
+}
+
+int X86EMU_trace_on(void)
+{
+ return M.x86.debug |= DEBUG_STEP_F | DEBUG_DECODE_F | DEBUG_TRACE_F;
+}
+
+int X86EMU_trace_off(void)
+{
+ return M.x86.debug &= ~(DEBUG_STEP_F | DEBUG_DECODE_F | DEBUG_TRACE_F);
+}
+
+int parse_line (char *s, int *ps, int *n)
+{
+#if 0
+ int cmd;
+
+ *n = 0;
+ while(*s == ' ' || *s == '\t') s++;
+ ps[*n] = *s;
+ switch (*s) {
+ case '\n':
+ *n += 1;
+ return 0;
+ default:
+ cmd = *s;
+ *n += 1;
+ }
+
+ while (1) {
+ while (*s != ' ' && *s != '\t' && *s != '\n') s++;
+
+ if (*s == '\n')
+ return cmd;
+
+ while(*s == ' ' || *s == '\t') s++;
+
+ sscanf(s,"%x",&ps[*n]);
+ *n += 1;
+ }
+#else
+ return 0;
+#endif
+}
+
+#endif /* CONFIG_DEBUG */
+
+void x86emu_dump_regs (void)
+{
+ printk("\tAX=%04x ", M.x86.R_AX );
+ printk("BX=%04x ", M.x86.R_BX );
+ printk("CX=%04x ", M.x86.R_CX );
+ printk("DX=%04x ", M.x86.R_DX );
+ printk("SP=%04x ", M.x86.R_SP );
+ printk("BP=%04x ", M.x86.R_BP );
+ printk("SI=%04x ", M.x86.R_SI );
+ printk("DI=%04x\n", M.x86.R_DI );
+ printk("\tDS=%04x ", M.x86.R_DS );
+ printk("ES=%04x ", M.x86.R_ES );
+ printk("SS=%04x ", M.x86.R_SS );
+ printk("CS=%04x ", M.x86.R_CS );
+ printk("IP=%04x ", M.x86.R_IP );
+ if (ACCESS_FLAG(F_OF)) printk("OV "); /* CHECKED... */
+ else printk("NV ");
+ if (ACCESS_FLAG(F_DF)) printk("DN ");
+ else printk("UP ");
+ if (ACCESS_FLAG(F_IF)) printk("EI ");
+ else printk("DI ");
+ if (ACCESS_FLAG(F_SF)) printk("NG ");
+ else printk("PL ");
+ if (ACCESS_FLAG(F_ZF)) printk("ZR ");
+ else printk("NZ ");
+ if (ACCESS_FLAG(F_AF)) printk("AC ");
+ else printk("NA ");
+ if (ACCESS_FLAG(F_PF)) printk("PE ");
+ else printk("PO ");
+ if (ACCESS_FLAG(F_CF)) printk("CY ");
+ else printk("NC ");
+ printk("\n");
+}
+
+void x86emu_dump_xregs (void)
+{
+ printk("\tEAX=%08x ", M.x86.R_EAX );
+ printk("EBX=%08x ", M.x86.R_EBX );
+ printk("ECX=%08x ", M.x86.R_ECX );
+ printk("EDX=%08x \n", M.x86.R_EDX );
+ printk("\tESP=%08x ", M.x86.R_ESP );
+ printk("EBP=%08x ", M.x86.R_EBP );
+ printk("ESI=%08x ", M.x86.R_ESI );
+ printk("EDI=%08x\n", M.x86.R_EDI );
+ printk("\tDS=%04x ", M.x86.R_DS );
+ printk("ES=%04x ", M.x86.R_ES );
+ printk("SS=%04x ", M.x86.R_SS );
+ printk("CS=%04x ", M.x86.R_CS );
+ printk("EIP=%08x\n\t", M.x86.R_EIP );
+ if (ACCESS_FLAG(F_OF)) printk("OV "); /* CHECKED... */
+ else printk("NV ");
+ if (ACCESS_FLAG(F_DF)) printk("DN ");
+ else printk("UP ");
+ if (ACCESS_FLAG(F_IF)) printk("EI ");
+ else printk("DI ");
+ if (ACCESS_FLAG(F_SF)) printk("NG ");
+ else printk("PL ");
+ if (ACCESS_FLAG(F_ZF)) printk("ZR ");
+ else printk("NZ ");
+ if (ACCESS_FLAG(F_AF)) printk("AC ");
+ else printk("NA ");
+ if (ACCESS_FLAG(F_PF)) printk("PE ");
+ else printk("PO ");
+ if (ACCESS_FLAG(F_CF)) printk("CY ");
+ else printk("NC ");
+ printk("\n");
+}
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1996-1999 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: Header file for debug definitions.
+*
+****************************************************************************/
+/* $XFree86: xc/extras/x86emu/src/x86emu/x86emu/debug.h,v 1.4 2000/11/21 23:10:27 tsi Exp $ */
+
+#ifndef __X86EMU_DEBUG_H
+#define __X86EMU_DEBUG_H
+
+//#define CONFIG_DEBUG 0
+//#undef CONFIG_DEBUG
+/*---------------------- Macros and type definitions ----------------------*/
+
+/* checks to be enabled for "runtime" */
+
+#define CHECK_IP_FETCH_F 0x1
+#define CHECK_SP_ACCESS_F 0x2
+#define CHECK_MEM_ACCESS_F 0x4 /*using regular linear pointer */
+#define CHECK_DATA_ACCESS_F 0x8 /*using segment:offset*/
+
+#ifdef CONFIG_DEBUG
+# define CHECK_IP_FETCH() (M.x86.check & CHECK_IP_FETCH_F)
+# define CHECK_SP_ACCESS() (M.x86.check & CHECK_SP_ACCESS_F)
+# define CHECK_MEM_ACCESS() (M.x86.check & CHECK_MEM_ACCESS_F)
+# define CHECK_DATA_ACCESS() (M.x86.check & CHECK_DATA_ACCESS_F)
+#else
+# define CHECK_IP_FETCH()
+# define CHECK_SP_ACCESS()
+# define CHECK_MEM_ACCESS()
+# define CHECK_DATA_ACCESS()
+#endif
+
+#ifdef CONFIG_DEBUG
+# define DEBUG_INSTRUMENT() (M.x86.debug & DEBUG_INSTRUMENT_F)
+# define DEBUG_DECODE() (M.x86.debug & DEBUG_DECODE_F)
+# define DEBUG_TRACE() (M.x86.debug & DEBUG_TRACE_F)
+# define DEBUG_STEP() (M.x86.debug & DEBUG_STEP_F)
+# define DEBUG_DISASSEMBLE() (M.x86.debug & DEBUG_DISASSEMBLE_F)
+# define DEBUG_BREAK() (M.x86.debug & DEBUG_BREAK_F)
+# define DEBUG_SVC() (M.x86.debug & DEBUG_SVC_F)
+# define DEBUG_SAVE_IP_CS() (M.x86.debug & DEBUG_SAVE_IP_CS_F)
+
+# define DEBUG_FS() (M.x86.debug & DEBUG_FS_F)
+# define DEBUG_PROC() (M.x86.debug & DEBUG_PROC_F)
+# define DEBUG_SYSINT() (M.x86.debug & DEBUG_SYSINT_F)
+# define DEBUG_TRACECALL() (M.x86.debug & DEBUG_TRACECALL_F)
+# define DEBUG_TRACECALLREGS() (M.x86.debug & DEBUG_TRACECALL_REGS_F)
+# define DEBUG_TRACEJMP() (M.x86.debug & DEBUG_TRACEJMP_F)
+# define DEBUG_TRACEJMPREGS() (M.x86.debug & DEBUG_TRACEJMP_REGS_F)
+# define DEBUG_SYS() (M.x86.debug & DEBUG_SYS_F)
+# define DEBUG_MEM_TRACE() (M.x86.debug & DEBUG_MEM_TRACE_F)
+# define DEBUG_IO_TRACE() (M.x86.debug & DEBUG_IO_TRACE_F)
+# define DEBUG_DECODE_NOPRINT() (M.x86.debug & DEBUG_DECODE_NOPRINT_F)
+#else
+# define DEBUG_INSTRUMENT() 0
+# define DEBUG_DECODE() 0
+# define DEBUG_TRACE() 0
+# define DEBUG_STEP() 0
+# define DEBUG_DISASSEMBLE() 0
+# define DEBUG_BREAK() 0
+# define DEBUG_SVC() 0
+# define DEBUG_SAVE_IP_CS() 0
+# define DEBUG_FS() 0
+# define DEBUG_PROC() 0
+# define DEBUG_SYSINT() 0
+# define DEBUG_TRACECALL() 0
+# define DEBUG_TRACECALLREGS() 0
+# define DEBUG_TRACEJMP() 0
+# define DEBUG_TRACEJMPREGS() 0
+# define DEBUG_SYS() 0
+# define DEBUG_MEM_TRACE() 0
+# define DEBUG_IO_TRACE() 0
+# define DEBUG_DECODE_NOPRINT() 0
+#endif
+
+#ifdef CONFIG_DEBUG
+
+# define DECODE_PRINTF(x) if (DEBUG_DECODE()) \
+ x86emu_decode_printf(x)
+# define DECODE_PRINTF2(x,y) if (DEBUG_DECODE()) \
+ x86emu_decode_printf2(x,y)
+
+/*
+ * The following allow us to look at the bytes of an instruction. The
+ * first INCR_INSTRN_LEN, is called everytime bytes are consumed in
+ * the decoding process. The SAVE_IP_CS is called initially when the
+ * major opcode of the instruction is accessed.
+ */
+#define INC_DECODED_INST_LEN(x) \
+ if (DEBUG_DECODE()) \
+ x86emu_inc_decoded_inst_len(x)
+
+#define SAVE_IP_CS(x,y) \
+ if (DEBUG_DECODE() | DEBUG_TRACECALL() | DEBUG_BREAK() \
+ | DEBUG_IO_TRACE() | DEBUG_SAVE_IP_CS()) { \
+ M.x86.saved_cs = x; \
+ M.x86.saved_ip = y; \
+ }
+#else
+# define INC_DECODED_INST_LEN(x)
+# define DECODE_PRINTF(x)
+# define DECODE_PRINTF2(x,y)
+# define SAVE_IP_CS(x,y)
+#endif
+
+#ifdef CONFIG_DEBUG
+#define TRACE_REGS() \
+ if (DEBUG_DISASSEMBLE()) { \
+ x86emu_just_disassemble(); \
+ goto EndOfTheInstructionProcedure; \
+ } \
+ if (DEBUG_TRACE() || DEBUG_DECODE()) X86EMU_trace_regs()
+#else
+# define TRACE_REGS()
+#endif
+
+#ifdef CONFIG_DEBUG
+# define SINGLE_STEP() if (DEBUG_STEP()) x86emu_single_step()
+#else
+# define SINGLE_STEP()
+#endif
+
+#define TRACE_AND_STEP() \
+ TRACE_REGS(); \
+ SINGLE_STEP()
+
+#ifdef CONFIG_DEBUG
+# define START_OF_INSTR()
+# define END_OF_INSTR() EndOfTheInstructionProcedure: x86emu_end_instr();
+# define END_OF_INSTR_NO_TRACE() x86emu_end_instr();
+#else
+# define START_OF_INSTR()
+# define END_OF_INSTR()
+# define END_OF_INSTR_NO_TRACE()
+#endif
+
+#ifdef CONFIG_DEBUG
+# define CALL_TRACE(u,v,w,x,s) \
+ if (DEBUG_TRACECALLREGS()) \
+ x86emu_dump_regs(); \
+ if (DEBUG_TRACECALL()) \
+ printk("%04x:%04x: CALL %s%04x:%04x\n", u , v, s, w, x);
+# define RETURN_TRACE(u,v,w,x,s) \
+ if (DEBUG_TRACECALLREGS()) \
+ x86emu_dump_regs(); \
+ if (DEBUG_TRACECALL()) \
+ printk("%04x:%04x: RET %s %04x:%04x\n",u,v,s,w,x);
+# define JMP_TRACE(u,v,w,x,s) \
+ if (DEBUG_TRACEJMPREGS()) \
+ x86emu_dump_regs(); \
+ if (DEBUG_TRACEJMP()) \
+ printk("%04x:%04x: JMP %s%04x:%04x\n", u , v, s, w, x);
+#else
+# define CALL_TRACE(u,v,w,x,s)
+# define RETURN_TRACE(u,v,w,x,s)
+# define JMP_TRACE(u,v,w,x,s)
+#endif
+
+#ifdef CONFIG_DEBUG
+#define DB(x) x
+#else
+#define DB(x)
+#endif
+
+/*-------------------------- Function Prototypes --------------------------*/
+
+#ifdef __cplusplus
+extern "C" { /* Use "C" linkage when in C++ mode */
+#endif
+
+extern void x86emu_inc_decoded_inst_len (int x);
+extern void x86emu_decode_printf (char *x);
+extern void x86emu_decode_printf2 (char *x, int y);
+extern void x86emu_just_disassemble (void);
+extern void x86emu_single_step (void);
+extern void x86emu_end_instr (void);
+extern void x86emu_dump_regs (void);
+extern void x86emu_dump_xregs (void);
+extern void x86emu_print_int_vect (u16 iv);
+extern void x86emu_instrument_instruction (void);
+extern void x86emu_check_ip_access (void);
+extern void x86emu_check_sp_access (void);
+extern void x86emu_check_mem_access (u32 p);
+extern void x86emu_check_data_access (uint s, uint o);
+
+#ifdef __cplusplus
+} /* End of "C" linkage for C++ */
+#endif
+
+#endif /* __X86EMU_DEBUG_H */
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1991-2004 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: This file includes subroutines which are related to
+* instruction decoding and accessess of immediate data via IP. etc.
+*
+****************************************************************************/
+
+#include "x86emui.h"
+
+/*----------------------------- Implementation ----------------------------*/
+
+/****************************************************************************
+REMARKS:
+Handles any pending asychronous interrupts.
+****************************************************************************/
+static void x86emu_intr_handle(void)
+{
+ u8 intno;
+
+ if (M.x86.intr & INTR_SYNCH) {
+ intno = M.x86.intno;
+ if (_X86EMU_intrTab[intno]) {
+ (*_X86EMU_intrTab[intno])(intno);
+ } else {
+ push_word((u16)M.x86.R_FLG);
+ CLEAR_FLAG(F_IF);
+ CLEAR_FLAG(F_TF);
+ push_word(M.x86.R_CS);
+ M.x86.R_CS = mem_access_word(intno * 4 + 2);
+ push_word(M.x86.R_IP);
+ M.x86.R_IP = mem_access_word(intno * 4);
+ M.x86.intr = 0;
+ }
+ }
+}
+
+/****************************************************************************
+PARAMETERS:
+intrnum - Interrupt number to raise
+
+REMARKS:
+Raise the specified interrupt to be handled before the execution of the
+next instruction.
+****************************************************************************/
+void x86emu_intr_raise(
+ u8 intrnum)
+{
+ printk("%s, rasing execption %x\n", __func__, intrnum);
+ x86emu_dump_regs();
+ M.x86.intno = intrnum;
+ M.x86.intr |= INTR_SYNCH;
+}
+
+/****************************************************************************
+REMARKS:
+Main execution loop for the emulator. We return from here when the system
+halts, which is normally caused by a stack fault when we return from the
+original real mode call.
+****************************************************************************/
+void X86EMU_exec(void)
+{
+ u8 op1;
+
+ M.x86.intr = 0;
+ DB(x86emu_end_instr();)
+
+ for (;;) {
+DB( if (CHECK_IP_FETCH())
+ x86emu_check_ip_access();)
+ /* If debugging, save the IP and CS values. */
+ SAVE_IP_CS(M.x86.R_CS, M.x86.R_IP);
+ INC_DECODED_INST_LEN(1);
+ if (M.x86.intr) {
+ if (M.x86.intr & INTR_HALTED) {
+DB( if (M.x86.R_SP != 0) {
+ printk("halted\n");
+ X86EMU_trace_regs();
+ }
+ else {
+ if (M.x86.debug)
+ printk("Service completed successfully\n");
+ })
+ return;
+ }
+ if (((M.x86.intr & INTR_SYNCH) && (M.x86.intno == 0 || M.x86.intno == 2)) ||
+ !ACCESS_FLAG(F_IF)) {
+ x86emu_intr_handle();
+ }
+ }
+ op1 = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++));
+ (*x86emu_optab[op1])(op1);
+ //if (M.x86.debug & DEBUG_EXIT) {
+ // M.x86.debug &= ~DEBUG_EXIT;
+ // return;
+ //}
+ }
+}
+
+/****************************************************************************
+REMARKS:
+Halts the system by setting the halted system flag.
+****************************************************************************/
+void X86EMU_halt_sys(void)
+{
+ M.x86.intr |= INTR_HALTED;
+}
+
+/****************************************************************************
+PARAMETERS:
+mod - Mod value from decoded byte
+regh - Reg h value from decoded byte
+regl - Reg l value from decoded byte
+
+REMARKS:
+Raise the specified interrupt to be handled before the execution of the
+next instruction.
+
+NOTE: Do not inline this function, as (*sys_rdb) is already inline!
+****************************************************************************/
+void fetch_decode_modrm(
+ int *mod,
+ int *regh,
+ int *regl)
+{
+ int fetched;
+
+DB( if (CHECK_IP_FETCH())
+ x86emu_check_ip_access();)
+ fetched = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++));
+ INC_DECODED_INST_LEN(1);
+ *mod = (fetched >> 6) & 0x03;
+ *regh = (fetched >> 3) & 0x07;
+ *regl = (fetched >> 0) & 0x07;
+}
+
+/****************************************************************************
+RETURNS:
+Immediate byte value read from instruction queue
+
+REMARKS:
+This function returns the immediate byte from the instruction queue, and
+moves the instruction pointer to the next value.
+
+NOTE: Do not inline this function, as (*sys_rdb) is already inline!
+****************************************************************************/
+u8 fetch_byte_imm(void)
+{
+ u8 fetched;
+
+DB( if (CHECK_IP_FETCH())
+ x86emu_check_ip_access();)
+ fetched = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++));
+ INC_DECODED_INST_LEN(1);
+ return fetched;
+}
+
+/****************************************************************************
+RETURNS:
+Immediate word value read from instruction queue
+
+REMARKS:
+This function returns the immediate byte from the instruction queue, and
+moves the instruction pointer to the next value.
+
+NOTE: Do not inline this function, as (*sys_rdw) is already inline!
+****************************************************************************/
+u16 fetch_word_imm(void)
+{
+ u16 fetched;
+
+DB( if (CHECK_IP_FETCH())
+ x86emu_check_ip_access();)
+ fetched = (*sys_rdw)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP));
+ M.x86.R_IP += 2;
+ INC_DECODED_INST_LEN(2);
+ return fetched;
+}
+
+/****************************************************************************
+RETURNS:
+Immediate lone value read from instruction queue
+
+REMARKS:
+This function returns the immediate byte from the instruction queue, and
+moves the instruction pointer to the next value.
+
+NOTE: Do not inline this function, as (*sys_rdw) is already inline!
+****************************************************************************/
+u32 fetch_long_imm(void)
+{
+ u32 fetched;
+
+DB( if (CHECK_IP_FETCH())
+ x86emu_check_ip_access();)
+ fetched = (*sys_rdl)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP));
+ M.x86.R_IP += 4;
+ INC_DECODED_INST_LEN(4);
+ return fetched;
+}
+
+/****************************************************************************
+RETURNS:
+Value of the default data segment
+
+REMARKS:
+Inline function that returns the default data segment for the current
+instruction.
+
+On the x86 processor, the default segment is not always DS if there is
+no segment override. Address modes such as -3[BP] or 10[BP+SI] all refer to
+addresses relative to SS (ie: on the stack). So, at the minimum, all
+decodings of addressing modes would have to set/clear a bit describing
+whether the access is relative to DS or SS. That is the function of the
+cpu-state-varible M.x86.mode. There are several potential states:
+
+ repe prefix seen (handled elsewhere)
+ repne prefix seen (ditto)
+
+ cs segment override
+ ds segment override
+ es segment override
+ fs segment override
+ gs segment override
+ ss segment override
+
+ ds/ss select (in absense of override)
+
+Each of the above 7 items are handled with a bit in the mode field.
+****************************************************************************/
+_INLINE u32 get_data_segment(void)
+{
+#define GET_SEGMENT(segment)
+ switch (M.x86.mode & SYSMODE_SEGMASK) {
+ case 0: /* default case: use ds register */
+ case SYSMODE_SEGOVR_DS:
+ case SYSMODE_SEGOVR_DS | SYSMODE_SEG_DS_SS:
+ return M.x86.R_DS;
+ case SYSMODE_SEG_DS_SS: /* non-overridden, use ss register */
+ return M.x86.R_SS;
+ case SYSMODE_SEGOVR_CS:
+ case SYSMODE_SEGOVR_CS | SYSMODE_SEG_DS_SS:
+ return M.x86.R_CS;
+ case SYSMODE_SEGOVR_ES:
+ case SYSMODE_SEGOVR_ES | SYSMODE_SEG_DS_SS:
+ return M.x86.R_ES;
+ case SYSMODE_SEGOVR_FS:
+ case SYSMODE_SEGOVR_FS | SYSMODE_SEG_DS_SS:
+ return M.x86.R_FS;
+ case SYSMODE_SEGOVR_GS:
+ case SYSMODE_SEGOVR_GS | SYSMODE_SEG_DS_SS:
+ return M.x86.R_GS;
+ case SYSMODE_SEGOVR_SS:
+ case SYSMODE_SEGOVR_SS | SYSMODE_SEG_DS_SS:
+ return M.x86.R_SS;
+ default:
+#ifdef CONFIG_DEBUG
+ printk("error: should not happen: multiple overrides.\n");
+#endif
+ HALT_SYS();
+ return 0;
+ }
+}
+
+/****************************************************************************
+PARAMETERS:
+offset - Offset to load data from
+
+RETURNS:
+Byte value read from the absolute memory location.
+
+NOTE: Do not inline this function as (*sys_rdX) is already inline!
+****************************************************************************/
+u8 fetch_data_byte(
+ uint offset)
+{
+#ifdef CONFIG_DEBUG
+ if (CHECK_DATA_ACCESS())
+ x86emu_check_data_access((u16)get_data_segment(), offset);
+#endif
+ return (*sys_rdb)((get_data_segment() << 4) + offset);
+}
+
+/****************************************************************************
+PARAMETERS:
+offset - Offset to load data from
+
+RETURNS:
+Word value read from the absolute memory location.
+
+NOTE: Do not inline this function as (*sys_rdX) is already inline!
+****************************************************************************/
+u16 fetch_data_word(
+ uint offset)
+{
+#ifdef CONFIG_DEBUG
+ if (CHECK_DATA_ACCESS())
+ x86emu_check_data_access((u16)get_data_segment(), offset);
+#endif
+ return (*sys_rdw)((get_data_segment() << 4) + offset);
+}
+
+/****************************************************************************
+PARAMETERS:
+offset - Offset to load data from
+
+RETURNS:
+Long value read from the absolute memory location.
+
+NOTE: Do not inline this function as (*sys_rdX) is already inline!
+****************************************************************************/
+u32 fetch_data_long(
+ uint offset)
+{
+#ifdef CONFIG_DEBUG
+ if (CHECK_DATA_ACCESS())
+ x86emu_check_data_access((u16)get_data_segment(), offset);
+#endif
+ return (*sys_rdl)((get_data_segment() << 4) + offset);
+}
+
+/****************************************************************************
+PARAMETERS:
+segment - Segment to load data from
+offset - Offset to load data from
+
+RETURNS:
+Byte value read from the absolute memory location.
+
+NOTE: Do not inline this function as (*sys_rdX) is already inline!
+****************************************************************************/
+u8 fetch_data_byte_abs(
+ uint segment,
+ uint offset)
+{
+#ifdef CONFIG_DEBUG
+ if (CHECK_DATA_ACCESS())
+ x86emu_check_data_access(segment, offset);
+#endif
+ return (*sys_rdb)(((u32)segment << 4) + offset);
+}
+
+/****************************************************************************
+PARAMETERS:
+segment - Segment to load data from
+offset - Offset to load data from
+
+RETURNS:
+Word value read from the absolute memory location.
+
+NOTE: Do not inline this function as (*sys_rdX) is already inline!
+****************************************************************************/
+u16 fetch_data_word_abs(
+ uint segment,
+ uint offset)
+{
+#ifdef CONFIG_DEBUG
+ if (CHECK_DATA_ACCESS())
+ x86emu_check_data_access(segment, offset);
+#endif
+ return (*sys_rdw)(((u32)segment << 4) + offset);
+}
+
+/****************************************************************************
+PARAMETERS:
+segment - Segment to load data from
+offset - Offset to load data from
+
+RETURNS:
+Long value read from the absolute memory location.
+
+NOTE: Do not inline this function as (*sys_rdX) is already inline!
+****************************************************************************/
+u32 fetch_data_long_abs(
+ uint segment,
+ uint offset)
+{
+#ifdef CONFIG_DEBUG
+ if (CHECK_DATA_ACCESS())
+ x86emu_check_data_access(segment, offset);
+#endif
+ return (*sys_rdl)(((u32)segment << 4) + offset);
+}
+
+/****************************************************************************
+PARAMETERS:
+offset - Offset to store data at
+val - Value to store
+
+REMARKS:
+Writes a word value to an segmented memory location. The segment used is
+the current 'default' segment, which may have been overridden.
+
+NOTE: Do not inline this function as (*sys_wrX) is already inline!
+****************************************************************************/
+void store_data_byte(
+ uint offset,
+ u8 val)
+{
+#ifdef CONFIG_DEBUG
+ if (CHECK_DATA_ACCESS())
+ x86emu_check_data_access((u16)get_data_segment(), offset);
+#endif
+ (*sys_wrb)((get_data_segment() << 4) + offset, val);
+}
+
+/****************************************************************************
+PARAMETERS:
+offset - Offset to store data at
+val - Value to store
+
+REMARKS:
+Writes a word value to an segmented memory location. The segment used is
+the current 'default' segment, which may have been overridden.
+
+NOTE: Do not inline this function as (*sys_wrX) is already inline!
+****************************************************************************/
+void store_data_word(
+ uint offset,
+ u16 val)
+{
+#ifdef CONFIG_DEBUG
+ if (CHECK_DATA_ACCESS())
+ x86emu_check_data_access((u16)get_data_segment(), offset);
+#endif
+ (*sys_wrw)((get_data_segment() << 4) + offset, val);
+}
+
+/****************************************************************************
+PARAMETERS:
+offset - Offset to store data at
+val - Value to store
+
+REMARKS:
+Writes a long value to an segmented memory location. The segment used is
+the current 'default' segment, which may have been overridden.
+
+NOTE: Do not inline this function as (*sys_wrX) is already inline!
+****************************************************************************/
+void store_data_long(
+ uint offset,
+ u32 val)
+{
+#ifdef CONFIG_DEBUG
+ if (CHECK_DATA_ACCESS())
+ x86emu_check_data_access((u16)get_data_segment(), offset);
+#endif
+ (*sys_wrl)((get_data_segment() << 4) + offset, val);
+}
+
+/****************************************************************************
+PARAMETERS:
+segment - Segment to store data at
+offset - Offset to store data at
+val - Value to store
+
+REMARKS:
+Writes a byte value to an absolute memory location.
+
+NOTE: Do not inline this function as (*sys_wrX) is already inline!
+****************************************************************************/
+void store_data_byte_abs(
+ uint segment,
+ uint offset,
+ u8 val)
+{
+#ifdef CONFIG_DEBUG
+ if (CHECK_DATA_ACCESS())
+ x86emu_check_data_access(segment, offset);
+#endif
+ (*sys_wrb)(((u32)segment << 4) + offset, val);
+}
+
+/****************************************************************************
+PARAMETERS:
+segment - Segment to store data at
+offset - Offset to store data at
+val - Value to store
+
+REMARKS:
+Writes a word value to an absolute memory location.
+
+NOTE: Do not inline this function as (*sys_wrX) is already inline!
+****************************************************************************/
+void store_data_word_abs(
+ uint segment,
+ uint offset,
+ u16 val)
+{
+#ifdef CONFIG_DEBUG
+ if (CHECK_DATA_ACCESS())
+ x86emu_check_data_access(segment, offset);
+#endif
+ (*sys_wrw)(((u32)segment << 4) + offset, val);
+}
+
+/****************************************************************************
+PARAMETERS:
+segment - Segment to store data at
+offset - Offset to store data at
+val - Value to store
+
+REMARKS:
+Writes a long value to an absolute memory location.
+
+NOTE: Do not inline this function as (*sys_wrX) is already inline!
+****************************************************************************/
+void store_data_long_abs(
+ uint segment,
+ uint offset,
+ u32 val)
+{
+#ifdef CONFIG_DEBUG
+ if (CHECK_DATA_ACCESS())
+ x86emu_check_data_access(segment, offset);
+#endif
+ (*sys_wrl)(((u32)segment << 4) + offset, val);
+}
+
+/****************************************************************************
+PARAMETERS:
+reg - Register to decode
+
+RETURNS:
+Pointer to the appropriate register
+
+REMARKS:
+Return a pointer to the register given by the R/RM field of the
+modrm byte, for byte operands. Also enables the decoding of instructions.
+****************************************************************************/
+u8* decode_rm_byte_register(
+ int reg)
+{
+ switch (reg) {
+ case 0:
+ DECODE_PRINTF("AL");
+ return &M.x86.R_AL;
+ case 1:
+ DECODE_PRINTF("CL");
+ return &M.x86.R_CL;
+ case 2:
+ DECODE_PRINTF("DL");
+ return &M.x86.R_DL;
+ case 3:
+ DECODE_PRINTF("BL");
+ return &M.x86.R_BL;
+ case 4:
+ DECODE_PRINTF("AH");
+ return &M.x86.R_AH;
+ case 5:
+ DECODE_PRINTF("CH");
+ return &M.x86.R_CH;
+ case 6:
+ DECODE_PRINTF("DH");
+ return &M.x86.R_DH;
+ case 7:
+ DECODE_PRINTF("BH");
+ return &M.x86.R_BH;
+ }
+ HALT_SYS();
+ return NULL; /* NOT REACHED OR REACHED ON ERROR */
+}
+
+/****************************************************************************
+PARAMETERS:
+reg - Register to decode
+
+RETURNS:
+Pointer to the appropriate register
+
+REMARKS:
+Return a pointer to the register given by the R/RM field of the
+modrm byte, for word operands. Also enables the decoding of instructions.
+****************************************************************************/
+u16* decode_rm_word_register(
+ int reg)
+{
+ switch (reg) {
+ case 0:
+ DECODE_PRINTF("AX");
+ return &M.x86.R_AX;
+ case 1:
+ DECODE_PRINTF("CX");
+ return &M.x86.R_CX;
+ case 2:
+ DECODE_PRINTF("DX");
+ return &M.x86.R_DX;
+ case 3:
+ DECODE_PRINTF("BX");
+ return &M.x86.R_BX;
+ case 4:
+ DECODE_PRINTF("SP");
+ return &M.x86.R_SP;
+ case 5:
+ DECODE_PRINTF("BP");
+ return &M.x86.R_BP;
+ case 6:
+ DECODE_PRINTF("SI");
+ return &M.x86.R_SI;
+ case 7:
+ DECODE_PRINTF("DI");
+ return &M.x86.R_DI;
+ }
+ HALT_SYS();
+ return NULL; /* NOTREACHED OR REACHED ON ERROR */
+}
+
+/****************************************************************************
+PARAMETERS:
+reg - Register to decode
+
+RETURNS:
+Pointer to the appropriate register
+
+REMARKS:
+Return a pointer to the register given by the R/RM field of the
+modrm byte, for dword operands. Also enables the decoding of instructions.
+****************************************************************************/
+u32* decode_rm_long_register(
+ int reg)
+{
+ switch (reg) {
+ case 0:
+ DECODE_PRINTF("EAX");
+ return &M.x86.R_EAX;
+ case 1:
+ DECODE_PRINTF("ECX");
+ return &M.x86.R_ECX;
+ case 2:
+ DECODE_PRINTF("EDX");
+ return &M.x86.R_EDX;
+ case 3:
+ DECODE_PRINTF("EBX");
+ return &M.x86.R_EBX;
+ case 4:
+ DECODE_PRINTF("ESP");
+ return &M.x86.R_ESP;
+ case 5:
+ DECODE_PRINTF("EBP");
+ return &M.x86.R_EBP;
+ case 6:
+ DECODE_PRINTF("ESI");
+ return &M.x86.R_ESI;
+ case 7:
+ DECODE_PRINTF("EDI");
+ return &M.x86.R_EDI;
+ }
+ HALT_SYS();
+ return NULL; /* NOTREACHED OR REACHED ON ERROR */
+}
+
+/****************************************************************************
+PARAMETERS:
+reg - Register to decode
+
+RETURNS:
+Pointer to the appropriate register
+
+REMARKS:
+Return a pointer to the register given by the R/RM field of the
+modrm byte, for word operands, modified from above for the weirdo
+special case of segreg operands. Also enables the decoding of instructions.
+****************************************************************************/
+u16* decode_rm_seg_register(
+ int reg)
+{
+ switch (reg) {
+ case 0:
+ DECODE_PRINTF("ES");
+ return &M.x86.R_ES;
+ case 1:
+ DECODE_PRINTF("CS");
+ return &M.x86.R_CS;
+ case 2:
+ DECODE_PRINTF("SS");
+ return &M.x86.R_SS;
+ case 3:
+ DECODE_PRINTF("DS");
+ return &M.x86.R_DS;
+ case 4:
+ DECODE_PRINTF("FS");
+ return &M.x86.R_FS;
+ case 5:
+ DECODE_PRINTF("GS");
+ return &M.x86.R_GS;
+ case 6:
+ case 7:
+ DECODE_PRINTF("ILLEGAL SEGREG");
+ break;
+ }
+ HALT_SYS();
+ return NULL; /* NOT REACHED OR REACHED ON ERROR */
+}
+
+/****************************************************************************
+PARAMETERS:
+scale - scale value of SIB byte
+index - index value of SIB byte
+
+RETURNS:
+Value of scale * index
+
+REMARKS:
+Decodes scale/index of SIB byte and returns relevant offset part of
+effective address.
+****************************************************************************/
+unsigned decode_sib_si(
+ int scale,
+ int index)
+{
+ scale = 1 << scale;
+ if (scale > 1) {
+ DECODE_PRINTF2("[%d*", scale);
+ } else {
+ DECODE_PRINTF("[");
+ }
+ switch (index) {
+ case 0:
+ DECODE_PRINTF("EAX]");
+ return M.x86.R_EAX * index;
+ case 1:
+ DECODE_PRINTF("ECX]");
+ return M.x86.R_ECX * index;
+ case 2:
+ DECODE_PRINTF("EDX]");
+ return M.x86.R_EDX * index;
+ case 3:
+ DECODE_PRINTF("EBX]");
+ return M.x86.R_EBX * index;
+ case 4:
+ DECODE_PRINTF("0]");
+ return 0;
+ case 5:
+ DECODE_PRINTF("EBP]");
+ return M.x86.R_EBP * index;
+ case 6:
+ DECODE_PRINTF("ESI]");
+ return M.x86.R_ESI * index;
+ case 7:
+ DECODE_PRINTF("EDI]");
+ return M.x86.R_EDI * index;
+ }
+ HALT_SYS();
+ return 0; /* NOT REACHED OR REACHED ON ERROR */
+}
+
+/****************************************************************************
+PARAMETERS:
+mod - MOD value of preceding ModR/M byte
+
+RETURNS:
+Offset in memory for the address decoding
+
+REMARKS:
+Decodes SIB addressing byte and returns calculated effective address.
+****************************************************************************/
+unsigned decode_sib_address(
+ int mod)
+{
+ int sib = fetch_byte_imm();
+ int ss = (sib >> 6) & 0x03;
+ int index = (sib >> 3) & 0x07;
+ int base = sib & 0x07;
+ int offset = 0;
+ int displacement;
+
+ switch (base) {
+ case 0:
+ DECODE_PRINTF("[EAX]");
+ offset = M.x86.R_EAX;
+ break;
+ case 1:
+ DECODE_PRINTF("[ECX]");
+ offset = M.x86.R_ECX;
+ break;
+ case 2:
+ DECODE_PRINTF("[EDX]");
+ offset = M.x86.R_EDX;
+ break;
+ case 3:
+ DECODE_PRINTF("[EBX]");
+ offset = M.x86.R_EBX;
+ break;
+ case 4:
+ DECODE_PRINTF("[ESP]");
+ offset = M.x86.R_ESP;
+ break;
+ case 5:
+ switch (mod) {
+ case 0:
+ displacement = (s32)fetch_long_imm();
+ DECODE_PRINTF2("[%d]", displacement);
+ offset = displacement;
+ break;
+ case 1:
+ displacement = (s8)fetch_byte_imm();
+ DECODE_PRINTF2("[%d][EBP]", displacement);
+ offset = M.x86.R_EBP + displacement;
+ break;
+ case 2:
+ displacement = (s32)fetch_long_imm();
+ DECODE_PRINTF2("[%d][EBP]", displacement);
+ offset = M.x86.R_EBP + displacement;
+ break;
+ default:
+ HALT_SYS();
+ }
+ DECODE_PRINTF("[EAX]");
+ offset = M.x86.R_EAX;
+ break;
+ case 6:
+ DECODE_PRINTF("[ESI]");
+ offset = M.x86.R_ESI;
+ break;
+ case 7:
+ DECODE_PRINTF("[EDI]");
+ offset = M.x86.R_EDI;
+ break;
+ default:
+ HALT_SYS();
+ }
+ offset += decode_sib_si(ss, index);
+ return offset;
+}
+
+/****************************************************************************
+PARAMETERS:
+rm - RM value to decode
+
+RETURNS:
+Offset in memory for the address decoding
+
+REMARKS:
+Return the offset given by mod=00 addressing. Also enables the
+decoding of instructions.
+
+NOTE: The code which specifies the corresponding segment (ds vs ss)
+ below in the case of [BP+..]. The assumption here is that at the
+ point that this subroutine is called, the bit corresponding to
+ SYSMODE_SEG_DS_SS will be zero. After every instruction
+ except the segment override instructions, this bit (as well
+ as any bits indicating segment overrides) will be clear. So
+ if a SS access is needed, set this bit. Otherwise, DS access
+ occurs (unless any of the segment override bits are set).
+****************************************************************************/
+unsigned decode_rm00_address(
+ int rm)
+{
+ unsigned offset;
+
+ if (M.x86.mode & SYSMODE_PREFIX_ADDR) {
+ /* 32-bit addressing */
+ switch (rm) {
+ case 0:
+ DECODE_PRINTF("[EAX]");
+ return M.x86.R_EAX;
+ case 1:
+ DECODE_PRINTF("[ECX]");
+ return M.x86.R_ECX;
+ case 2:
+ DECODE_PRINTF("[EDX]");
+ return M.x86.R_EDX;
+ case 3:
+ DECODE_PRINTF("[EBX]");
+ return M.x86.R_EBX;
+ case 4:
+ return decode_sib_address(0);
+ case 5:
+ offset = fetch_long_imm();
+ DECODE_PRINTF2("[%08x]", offset);
+ return offset;
+ case 6:
+ DECODE_PRINTF("[ESI]");
+ return M.x86.R_ESI;
+ case 7:
+ DECODE_PRINTF("[EDI]");
+ return M.x86.R_EDI;
+ }
+ } else {
+ /* 16-bit addressing */
+ switch (rm) {
+ case 0:
+ DECODE_PRINTF("[BX+SI]");
+ return (M.x86.R_BX + M.x86.R_SI) & 0xffff;
+ case 1:
+ DECODE_PRINTF("[BX+DI]");
+ return (M.x86.R_BX + M.x86.R_DI) & 0xffff;
+ case 2:
+ DECODE_PRINTF("[BP+SI]");
+ M.x86.mode |= SYSMODE_SEG_DS_SS;
+ return (M.x86.R_BP + M.x86.R_SI) & 0xffff;
+ case 3:
+ DECODE_PRINTF("[BP+DI]");
+ M.x86.mode |= SYSMODE_SEG_DS_SS;
+ return (M.x86.R_BP + M.x86.R_DI) & 0xffff;
+ case 4:
+ DECODE_PRINTF("[SI]");
+ return M.x86.R_SI;
+ case 5:
+ DECODE_PRINTF("[DI]");
+ return M.x86.R_DI;
+ case 6:
+ offset = fetch_word_imm();
+ DECODE_PRINTF2("[%04x]", offset);
+ return offset;
+ case 7:
+ DECODE_PRINTF("[BX]");
+ return M.x86.R_BX;
+ }
+ }
+ HALT_SYS();
+ return 0;
+}
+
+/****************************************************************************
+PARAMETERS:
+rm - RM value to decode
+
+RETURNS:
+Offset in memory for the address decoding
+
+REMARKS:
+Return the offset given by mod=01 addressing. Also enables the
+decoding of instructions.
+****************************************************************************/
+unsigned decode_rm01_address(
+ int rm)
+{
+ int displacement;
+
+ if (M.x86.mode & SYSMODE_PREFIX_ADDR) {
+ /* 32-bit addressing */
+ if (rm != 4)
+ displacement = (s8)fetch_byte_imm();
+ else
+ displacement = 0;
+
+ switch (rm) {
+ case 0:
+ DECODE_PRINTF2("%d[EAX]", displacement);
+ return M.x86.R_EAX + displacement;
+ case 1:
+ DECODE_PRINTF2("%d[ECX]", displacement);
+ return M.x86.R_ECX + displacement;
+ case 2:
+ DECODE_PRINTF2("%d[EDX]", displacement);
+ return M.x86.R_EDX + displacement;
+ case 3:
+ DECODE_PRINTF2("%d[EBX]", displacement);
+ return M.x86.R_EBX + displacement;
+ case 4: {
+ int offset = decode_sib_address(1);
+ displacement = (s8)fetch_byte_imm();
+ DECODE_PRINTF2("[%d]", displacement);
+ return offset + displacement;
+ }
+ case 5:
+ DECODE_PRINTF2("%d[EBP]", displacement);
+ return M.x86.R_EBP + displacement;
+ case 6:
+ DECODE_PRINTF2("%d[ESI]", displacement);
+ return M.x86.R_ESI + displacement;
+ case 7:
+ DECODE_PRINTF2("%d[EDI]", displacement);
+ return M.x86.R_EDI + displacement;
+ }
+ } else {
+ /* 16-bit addressing */
+ displacement = (s8)fetch_byte_imm();
+ switch (rm) {
+ case 0:
+ DECODE_PRINTF2("%d[BX+SI]", displacement);
+ return (M.x86.R_BX + M.x86.R_SI + displacement) & 0xffff;
+ case 1:
+ DECODE_PRINTF2("%d[BX+DI]", displacement);
+ return (M.x86.R_BX + M.x86.R_DI + displacement) & 0xffff;
+ case 2:
+ DECODE_PRINTF2("%d[BP+SI]", displacement);
+ M.x86.mode |= SYSMODE_SEG_DS_SS;
+ return (M.x86.R_BP + M.x86.R_SI + displacement) & 0xffff;
+ case 3:
+ DECODE_PRINTF2("%d[BP+DI]", displacement);
+ M.x86.mode |= SYSMODE_SEG_DS_SS;
+ return (M.x86.R_BP + M.x86.R_DI + displacement) & 0xffff;
+ case 4:
+ DECODE_PRINTF2("%d[SI]", displacement);
+ return (M.x86.R_SI + displacement) & 0xffff;
+ case 5:
+ DECODE_PRINTF2("%d[DI]", displacement);
+ return (M.x86.R_DI + displacement) & 0xffff;
+ case 6:
+ DECODE_PRINTF2("%d[BP]", displacement);
+ M.x86.mode |= SYSMODE_SEG_DS_SS;
+ return (M.x86.R_BP + displacement) & 0xffff;
+ case 7:
+ DECODE_PRINTF2("%d[BX]", displacement);
+ return (M.x86.R_BX + displacement) & 0xffff;
+ }
+ }
+ HALT_SYS();
+ return 0; /* SHOULD NOT HAPPEN */
+}
+
+/****************************************************************************
+PARAMETERS:
+rm - RM value to decode
+
+RETURNS:
+Offset in memory for the address decoding
+
+REMARKS:
+Return the offset given by mod=10 addressing. Also enables the
+decoding of instructions.
+****************************************************************************/
+unsigned decode_rm10_address(
+ int rm)
+{
+ if (M.x86.mode & SYSMODE_PREFIX_ADDR) {
+ int displacement;
+
+ /* 32-bit addressing */
+ if (rm != 4)
+ displacement = (s32)fetch_long_imm();
+ else
+ displacement = 0;
+
+ switch (rm) {
+ case 0:
+ DECODE_PRINTF2("%d[EAX]", displacement);
+ return M.x86.R_EAX + displacement;
+ case 1:
+ DECODE_PRINTF2("%d[ECX]", displacement);
+ return M.x86.R_ECX + displacement;
+ case 2:
+ DECODE_PRINTF2("%d[EDX]", displacement);
+ return M.x86.R_EDX + displacement;
+ case 3:
+ DECODE_PRINTF2("%d[EBX]", displacement);
+ return M.x86.R_EBX + displacement;
+ case 4: {
+ int offset = decode_sib_address(2);
+ displacement = (s32)fetch_long_imm();
+ DECODE_PRINTF2("[%d]", displacement);
+ return offset + displacement;
+ }
+ case 5:
+ DECODE_PRINTF2("%d[EBP]", displacement);
+ return M.x86.R_EBP + displacement;
+ case 6:
+ DECODE_PRINTF2("%d[ESI]", displacement);
+ return M.x86.R_ESI + displacement;
+ case 7:
+ DECODE_PRINTF2("%d[EDI]", displacement);
+ return M.x86.R_EDI + displacement;
+ }
+ } else {
+ int displacement = (s16)fetch_word_imm();
+
+ /* 16-bit addressing */
+ switch (rm) {
+ case 0:
+ DECODE_PRINTF2("%d[BX+SI]", displacement);
+ return (M.x86.R_BX + M.x86.R_SI + displacement) & 0xffff;
+ case 1:
+ DECODE_PRINTF2("%d[BX+DI]", displacement);
+ return (M.x86.R_BX + M.x86.R_DI + displacement) & 0xffff;
+ case 2:
+ DECODE_PRINTF2("%d[BP+SI]", displacement);
+ M.x86.mode |= SYSMODE_SEG_DS_SS;
+ return (M.x86.R_BP + M.x86.R_SI + displacement) & 0xffff;
+ case 3:
+ DECODE_PRINTF2("%d[BP+DI]", displacement);
+ M.x86.mode |= SYSMODE_SEG_DS_SS;
+ return (M.x86.R_BP + M.x86.R_DI + displacement) & 0xffff;
+ case 4:
+ DECODE_PRINTF2("%d[SI]", displacement);
+ return (M.x86.R_SI + displacement) & 0xffff;
+ case 5:
+ DECODE_PRINTF2("%d[DI]", displacement);
+ return (M.x86.R_DI + displacement) & 0xffff;
+ case 6:
+ DECODE_PRINTF2("%d[BP]", displacement);
+ M.x86.mode |= SYSMODE_SEG_DS_SS;
+ return (M.x86.R_BP + displacement) & 0xffff;
+ case 7:
+ DECODE_PRINTF2("%d[BX]", displacement);
+ return (M.x86.R_BX + displacement) & 0xffff;
+ }
+ }
+ HALT_SYS();
+ return 0; /* SHOULD NOT HAPPEN */
+}
+
+
+/****************************************************************************
+PARAMETERS:
+mod - modifier
+rm - RM value to decode
+
+RETURNS:
+Offset in memory for the address decoding, multiplexing calls to
+the decode_rmXX_address functions
+
+REMARKS:
+Return the offset given by "mod" addressing.
+****************************************************************************/
+
+unsigned decode_rmXX_address(int mod, int rm)
+{
+ if(mod == 0)
+ return decode_rm00_address(rm);
+ if(mod == 1)
+ return decode_rm01_address(rm);
+ return decode_rm10_address(rm);
+}
+
+
+
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1996-1999 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: Header file for instruction decoding logic.
+*
+****************************************************************************/
+
+#ifndef __X86EMU_DECODE_H
+#define __X86EMU_DECODE_H
+
+/*---------------------- Macros and type definitions ----------------------*/
+
+/* Instruction Decoding Stuff */
+
+#define FETCH_DECODE_MODRM(mod,rh,rl) fetch_decode_modrm(&mod,&rh,&rl)
+#define DECODE_RM_BYTE_REGISTER(r) decode_rm_byte_register(r)
+#define DECODE_RM_WORD_REGISTER(r) decode_rm_word_register(r)
+#define DECODE_RM_LONG_REGISTER(r) decode_rm_long_register(r)
+#define DECODE_CLEAR_SEGOVR() M.x86.mode &= ~SYSMODE_CLRMASK
+
+/*-------------------------- Function Prototypes --------------------------*/
+
+#ifdef __cplusplus
+extern "C" { /* Use "C" linkage when in C++ mode */
+#endif
+
+void x86emu_intr_raise (u8 type);
+void fetch_decode_modrm (int *mod,int *regh,int *regl);
+u8 fetch_byte_imm (void);
+u16 fetch_word_imm (void);
+u32 fetch_long_imm (void);
+u8 fetch_data_byte (uint offset);
+u8 fetch_data_byte_abs (uint segment, uint offset);
+u16 fetch_data_word (uint offset);
+u16 fetch_data_word_abs (uint segment, uint offset);
+u32 fetch_data_long (uint offset);
+u32 fetch_data_long_abs (uint segment, uint offset);
+void store_data_byte (uint offset, u8 val);
+void store_data_byte_abs (uint segment, uint offset, u8 val);
+void store_data_word (uint offset, u16 val);
+void store_data_word_abs (uint segment, uint offset, u16 val);
+void store_data_long (uint offset, u32 val);
+void store_data_long_abs (uint segment, uint offset, u32 val);
+u8* decode_rm_byte_register(int reg);
+u16* decode_rm_word_register(int reg);
+u32* decode_rm_long_register(int reg);
+u16* decode_rm_seg_register(int reg);
+unsigned decode_rm00_address(int rm);
+unsigned decode_rm01_address(int rm);
+unsigned decode_rm10_address(int rm);
+unsigned decode_rmXX_address(int mod, int rm);
+
+#ifdef __cplusplus
+} /* End of "C" linkage for C++ */
+#endif
+
+#endif /* __X86EMU_DECODE_H */
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1991-2004 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: This file contains the code to implement the decoding and
+* emulation of the FPU instructions.
+*
+****************************************************************************/
+
+#include "x86emui.h"
+
+/*----------------------------- Implementation ----------------------------*/
+
+/* opcode=0xd8 */
+void x86emuOp_esc_coprocess_d8(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("ESC D8\n");
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR_NO_TRACE();
+}
+
+#ifdef CONFIG_DEBUG
+
+static char *x86emu_fpu_op_d9_tab[] = {
+ "FLD\tDWORD PTR ", "ESC_D9\t", "FST\tDWORD PTR ", "FSTP\tDWORD PTR ",
+ "FLDENV\t", "FLDCW\t", "FSTENV\t", "FSTCW\t",
+
+ "FLD\tDWORD PTR ", "ESC_D9\t", "FST\tDWORD PTR ", "FSTP\tDWORD PTR ",
+ "FLDENV\t", "FLDCW\t", "FSTENV\t", "FSTCW\t",
+
+ "FLD\tDWORD PTR ", "ESC_D9\t", "FST\tDWORD PTR ", "FSTP\tDWORD PTR ",
+ "FLDENV\t", "FLDCW\t", "FSTENV\t", "FSTCW\t",
+};
+
+static char *x86emu_fpu_op_d9_tab1[] = {
+ "FLD\t", "FLD\t", "FLD\t", "FLD\t",
+ "FLD\t", "FLD\t", "FLD\t", "FLD\t",
+
+ "FXCH\t", "FXCH\t", "FXCH\t", "FXCH\t",
+ "FXCH\t", "FXCH\t", "FXCH\t", "FXCH\t",
+
+ "FNOP", "ESC_D9", "ESC_D9", "ESC_D9",
+ "ESC_D9", "ESC_D9", "ESC_D9", "ESC_D9",
+
+ "FSTP\t", "FSTP\t", "FSTP\t", "FSTP\t",
+ "FSTP\t", "FSTP\t", "FSTP\t", "FSTP\t",
+
+ "FCHS", "FABS", "ESC_D9", "ESC_D9",
+ "FTST", "FXAM", "ESC_D9", "ESC_D9",
+
+ "FLD1", "FLDL2T", "FLDL2E", "FLDPI",
+ "FLDLG2", "FLDLN2", "FLDZ", "ESC_D9",
+
+ "F2XM1", "FYL2X", "FPTAN", "FPATAN",
+ "FXTRACT", "ESC_D9", "FDECSTP", "FINCSTP",
+
+ "FPREM", "FYL2XP1", "FSQRT", "ESC_D9",
+ "FRNDINT", "FSCALE", "ESC_D9", "ESC_D9",
+};
+
+#endif /* CONFIG_DEBUG */
+
+/* opcode=0xd9 */
+void x86emuOp_esc_coprocess_d9(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+ u8 stkelem;
+
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+#ifdef CONFIG_DEBUG
+ if (mod != 3) {
+ DECODE_PRINTINSTR32(x86emu_fpu_op_d9_tab, mod, rh, rl);
+ } else {
+ DECODE_PRINTF(x86emu_fpu_op_d9_tab1[(rh << 3) + rl]);
+ }
+#endif
+ switch (mod) {
+ case 0:
+ destoffset = decode_rm00_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 1:
+ destoffset = decode_rm01_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 2:
+ destoffset = decode_rm10_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 3: /* register to register */
+ stkelem = (u8)rl;
+ if (rh < 4) {
+ DECODE_PRINTF2("ST(%d)\n", stkelem);
+ } else {
+ DECODE_PRINTF("\n");
+ }
+ break;
+ }
+#ifdef X86EMU_FPU_PRESENT
+ /* execute */
+ switch (mod) {
+ case 3:
+ switch (rh) {
+ case 0:
+ x86emu_fpu_R_fld(X86EMU_FPU_STKTOP, stkelem);
+ break;
+ case 1:
+ x86emu_fpu_R_fxch(X86EMU_FPU_STKTOP, stkelem);
+ break;
+ case 2:
+ switch (rl) {
+ case 0:
+ x86emu_fpu_R_nop();
+ break;
+ default:
+ x86emu_fpu_illegal();
+ break;
+ }
+ case 3:
+ x86emu_fpu_R_fstp(X86EMU_FPU_STKTOP, stkelem);
+ break;
+ case 4:
+ switch (rl) {
+ case 0:
+ x86emu_fpu_R_fchs(X86EMU_FPU_STKTOP);
+ break;
+ case 1:
+ x86emu_fpu_R_fabs(X86EMU_FPU_STKTOP);
+ break;
+ case 4:
+ x86emu_fpu_R_ftst(X86EMU_FPU_STKTOP);
+ break;
+ case 5:
+ x86emu_fpu_R_fxam(X86EMU_FPU_STKTOP);
+ break;
+ default:
+ /* 2,3,6,7 */
+ x86emu_fpu_illegal();
+ break;
+ }
+ break;
+
+ case 5:
+ switch (rl) {
+ case 0:
+ x86emu_fpu_R_fld1(X86EMU_FPU_STKTOP);
+ break;
+ case 1:
+ x86emu_fpu_R_fldl2t(X86EMU_FPU_STKTOP);
+ break;
+ case 2:
+ x86emu_fpu_R_fldl2e(X86EMU_FPU_STKTOP);
+ break;
+ case 3:
+ x86emu_fpu_R_fldpi(X86EMU_FPU_STKTOP);
+ break;
+ case 4:
+ x86emu_fpu_R_fldlg2(X86EMU_FPU_STKTOP);
+ break;
+ case 5:
+ x86emu_fpu_R_fldln2(X86EMU_FPU_STKTOP);
+ break;
+ case 6:
+ x86emu_fpu_R_fldz(X86EMU_FPU_STKTOP);
+ break;
+ default:
+ /* 7 */
+ x86emu_fpu_illegal();
+ break;
+ }
+ break;
+
+ case 6:
+ switch (rl) {
+ case 0:
+ x86emu_fpu_R_f2xm1(X86EMU_FPU_STKTOP);
+ break;
+ case 1:
+ x86emu_fpu_R_fyl2x(X86EMU_FPU_STKTOP);
+ break;
+ case 2:
+ x86emu_fpu_R_fptan(X86EMU_FPU_STKTOP);
+ break;
+ case 3:
+ x86emu_fpu_R_fpatan(X86EMU_FPU_STKTOP);
+ break;
+ case 4:
+ x86emu_fpu_R_fxtract(X86EMU_FPU_STKTOP);
+ break;
+ case 5:
+ x86emu_fpu_illegal();
+ break;
+ case 6:
+ x86emu_fpu_R_decstp();
+ break;
+ case 7:
+ x86emu_fpu_R_incstp();
+ break;
+ }
+ break;
+
+ case 7:
+ switch (rl) {
+ case 0:
+ x86emu_fpu_R_fprem(X86EMU_FPU_STKTOP);
+ break;
+ case 1:
+ x86emu_fpu_R_fyl2xp1(X86EMU_FPU_STKTOP);
+ break;
+ case 2:
+ x86emu_fpu_R_fsqrt(X86EMU_FPU_STKTOP);
+ break;
+ case 3:
+ x86emu_fpu_illegal();
+ break;
+ case 4:
+ x86emu_fpu_R_frndint(X86EMU_FPU_STKTOP);
+ break;
+ case 5:
+ x86emu_fpu_R_fscale(X86EMU_FPU_STKTOP);
+ break;
+ case 6:
+ case 7:
+ default:
+ x86emu_fpu_illegal();
+ break;
+ }
+ break;
+
+ default:
+ switch (rh) {
+ case 0:
+ x86emu_fpu_M_fld(X86EMU_FPU_FLOAT, destoffset);
+ break;
+ case 1:
+ x86emu_fpu_illegal();
+ break;
+ case 2:
+ x86emu_fpu_M_fst(X86EMU_FPU_FLOAT, destoffset);
+ break;
+ case 3:
+ x86emu_fpu_M_fstp(X86EMU_FPU_FLOAT, destoffset);
+ break;
+ case 4:
+ x86emu_fpu_M_fldenv(X86EMU_FPU_WORD, destoffset);
+ break;
+ case 5:
+ x86emu_fpu_M_fldcw(X86EMU_FPU_WORD, destoffset);
+ break;
+ case 6:
+ x86emu_fpu_M_fstenv(X86EMU_FPU_WORD, destoffset);
+ break;
+ case 7:
+ x86emu_fpu_M_fstcw(X86EMU_FPU_WORD, destoffset);
+ break;
+ }
+ }
+ }
+#endif /* X86EMU_FPU_PRESENT */
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR_NO_TRACE();
+}
+
+#ifdef CONFIG_DEBUG
+
+char *x86emu_fpu_op_da_tab[] = {
+ "FIADD\tDWORD PTR ", "FIMUL\tDWORD PTR ", "FICOM\tDWORD PTR ",
+ "FICOMP\tDWORD PTR ",
+ "FISUB\tDWORD PTR ", "FISUBR\tDWORD PTR ", "FIDIV\tDWORD PTR ",
+ "FIDIVR\tDWORD PTR ",
+
+ "FIADD\tDWORD PTR ", "FIMUL\tDWORD PTR ", "FICOM\tDWORD PTR ",
+ "FICOMP\tDWORD PTR ",
+ "FISUB\tDWORD PTR ", "FISUBR\tDWORD PTR ", "FIDIV\tDWORD PTR ",
+ "FIDIVR\tDWORD PTR ",
+
+ "FIADD\tDWORD PTR ", "FIMUL\tDWORD PTR ", "FICOM\tDWORD PTR ",
+ "FICOMP\tDWORD PTR ",
+ "FISUB\tDWORD PTR ", "FISUBR\tDWORD PTR ", "FIDIV\tDWORD PTR ",
+ "FIDIVR\tDWORD PTR ",
+
+ "ESC_DA ", "ESC_DA ", "ESC_DA ", "ESC_DA ",
+ "ESC_DA ", "ESC_DA ", "ESC_DA ", "ESC_DA ",
+};
+
+#endif /* CONFIG_DEBUG */
+
+/* opcode=0xda */
+void x86emuOp_esc_coprocess_da(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+ u8 stkelem;
+
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ DECODE_PRINTINSTR32(x86emu_fpu_op_da_tab, mod, rh, rl);
+ switch (mod) {
+ case 0:
+ destoffset = decode_rm00_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 1:
+ destoffset = decode_rm01_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 2:
+ destoffset = decode_rm10_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 3: /* register to register */
+ stkelem = (u8)rl;
+ DECODE_PRINTF2("\tST(%d),ST\n", stkelem);
+ break;
+ }
+#ifdef X86EMU_FPU_PRESENT
+ switch (mod) {
+ case 3:
+ x86emu_fpu_illegal();
+ break;
+ default:
+ switch (rh) {
+ case 0:
+ x86emu_fpu_M_iadd(X86EMU_FPU_SHORT, destoffset);
+ break;
+ case 1:
+ x86emu_fpu_M_imul(X86EMU_FPU_SHORT, destoffset);
+ break;
+ case 2:
+ x86emu_fpu_M_icom(X86EMU_FPU_SHORT, destoffset);
+ break;
+ case 3:
+ x86emu_fpu_M_icomp(X86EMU_FPU_SHORT, destoffset);
+ break;
+ case 4:
+ x86emu_fpu_M_isub(X86EMU_FPU_SHORT, destoffset);
+ break;
+ case 5:
+ x86emu_fpu_M_isubr(X86EMU_FPU_SHORT, destoffset);
+ break;
+ case 6:
+ x86emu_fpu_M_idiv(X86EMU_FPU_SHORT, destoffset);
+ break;
+ case 7:
+ x86emu_fpu_M_idivr(X86EMU_FPU_SHORT, destoffset);
+ break;
+ }
+ }
+#endif
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR_NO_TRACE();
+}
+
+#ifdef CONFIG_DEBUG
+
+char *x86emu_fpu_op_db_tab[] = {
+ "FILD\tDWORD PTR ", "ESC_DB\t19", "FIST\tDWORD PTR ", "FISTP\tDWORD PTR ",
+ "ESC_DB\t1C", "FLD\tTBYTE PTR ", "ESC_DB\t1E", "FSTP\tTBYTE PTR ",
+
+ "FILD\tDWORD PTR ", "ESC_DB\t19", "FIST\tDWORD PTR ", "FISTP\tDWORD PTR ",
+ "ESC_DB\t1C", "FLD\tTBYTE PTR ", "ESC_DB\t1E", "FSTP\tTBYTE PTR ",
+
+ "FILD\tDWORD PTR ", "ESC_DB\t19", "FIST\tDWORD PTR ", "FISTP\tDWORD PTR ",
+ "ESC_DB\t1C", "FLD\tTBYTE PTR ", "ESC_DB\t1E", "FSTP\tTBYTE PTR ",
+};
+
+#endif /* CONFIG_DEBUG */
+
+/* opcode=0xdb */
+void x86emuOp_esc_coprocess_db(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+#ifdef CONFIG_DEBUG
+ if (mod != 3) {
+ DECODE_PRINTINSTR32(x86emu_fpu_op_db_tab, mod, rh, rl);
+ } else if (rh == 4) { /* === 11 10 0 nnn */
+ switch (rl) {
+ case 0:
+ DECODE_PRINTF("FENI\n");
+ break;
+ case 1:
+ DECODE_PRINTF("FDISI\n");
+ break;
+ case 2:
+ DECODE_PRINTF("FCLEX\n");
+ break;
+ case 3:
+ DECODE_PRINTF("FINIT\n");
+ break;
+ }
+ } else {
+ DECODE_PRINTF2("ESC_DB %0x\n", (mod << 6) + (rh << 3) + (rl));
+ }
+#endif /* CONFIG_DEBUG */
+ switch (mod) {
+ case 0:
+ destoffset = decode_rm00_address(rl);
+ break;
+ case 1:
+ destoffset = decode_rm01_address(rl);
+ break;
+ case 2:
+ destoffset = decode_rm10_address(rl);
+ break;
+ case 3: /* register to register */
+ break;
+ }
+#ifdef X86EMU_FPU_PRESENT
+ /* execute */
+ switch (mod) {
+ case 3:
+ switch (rh) {
+ case 4:
+ switch (rl) {
+ case 0:
+ x86emu_fpu_R_feni();
+ break;
+ case 1:
+ x86emu_fpu_R_fdisi();
+ break;
+ case 2:
+ x86emu_fpu_R_fclex();
+ break;
+ case 3:
+ x86emu_fpu_R_finit();
+ break;
+ default:
+ x86emu_fpu_illegal();
+ break;
+ }
+ break;
+ default:
+ x86emu_fpu_illegal();
+ break;
+ }
+ break;
+ default:
+ switch (rh) {
+ case 0:
+ x86emu_fpu_M_fild(X86EMU_FPU_SHORT, destoffset);
+ break;
+ case 1:
+ x86emu_fpu_illegal();
+ break;
+ case 2:
+ x86emu_fpu_M_fist(X86EMU_FPU_SHORT, destoffset);
+ break;
+ case 3:
+ x86emu_fpu_M_fistp(X86EMU_FPU_SHORT, destoffset);
+ break;
+ case 4:
+ x86emu_fpu_illegal();
+ break;
+ case 5:
+ x86emu_fpu_M_fld(X86EMU_FPU_LDBL, destoffset);
+ break;
+ case 6:
+ x86emu_fpu_illegal();
+ break;
+ case 7:
+ x86emu_fpu_M_fstp(X86EMU_FPU_LDBL, destoffset);
+ break;
+ }
+ }
+#endif
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR_NO_TRACE();
+}
+
+#ifdef CONFIG_DEBUG
+char *x86emu_fpu_op_dc_tab[] = {
+ "FADD\tQWORD PTR ", "FMUL\tQWORD PTR ", "FCOM\tQWORD PTR ",
+ "FCOMP\tQWORD PTR ",
+ "FSUB\tQWORD PTR ", "FSUBR\tQWORD PTR ", "FDIV\tQWORD PTR ",
+ "FDIVR\tQWORD PTR ",
+
+ "FADD\tQWORD PTR ", "FMUL\tQWORD PTR ", "FCOM\tQWORD PTR ",
+ "FCOMP\tQWORD PTR ",
+ "FSUB\tQWORD PTR ", "FSUBR\tQWORD PTR ", "FDIV\tQWORD PTR ",
+ "FDIVR\tQWORD PTR ",
+
+ "FADD\tQWORD PTR ", "FMUL\tQWORD PTR ", "FCOM\tQWORD PTR ",
+ "FCOMP\tQWORD PTR ",
+ "FSUB\tQWORD PTR ", "FSUBR\tQWORD PTR ", "FDIV\tQWORD PTR ",
+ "FDIVR\tQWORD PTR ",
+
+ "FADD\t", "FMUL\t", "FCOM\t", "FCOMP\t",
+ "FSUBR\t", "FSUB\t", "FDIVR\t", "FDIV\t",
+};
+#endif /* CONFIG_DEBUG */
+
+/* opcode=0xdc */
+void x86emuOp_esc_coprocess_dc(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+ u8 stkelem;
+
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ DECODE_PRINTINSTR32(x86emu_fpu_op_dc_tab, mod, rh, rl);
+ switch (mod) {
+ case 0:
+ destoffset = decode_rm00_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 1:
+ destoffset = decode_rm01_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 2:
+ destoffset = decode_rm10_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 3: /* register to register */
+ stkelem = (u8)rl;
+ DECODE_PRINTF2("\tST(%d),ST\n", stkelem);
+ break;
+ }
+#ifdef X86EMU_FPU_PRESENT
+ /* execute */
+ switch (mod) {
+ case 3:
+ switch (rh) {
+ case 0:
+ x86emu_fpu_R_fadd(stkelem, X86EMU_FPU_STKTOP);
+ break;
+ case 1:
+ x86emu_fpu_R_fmul(stkelem, X86EMU_FPU_STKTOP);
+ break;
+ case 2:
+ x86emu_fpu_R_fcom(stkelem, X86EMU_FPU_STKTOP);
+ break;
+ case 3:
+ x86emu_fpu_R_fcomp(stkelem, X86EMU_FPU_STKTOP);
+ break;
+ case 4:
+ x86emu_fpu_R_fsubr(stkelem, X86EMU_FPU_STKTOP);
+ break;
+ case 5:
+ x86emu_fpu_R_fsub(stkelem, X86EMU_FPU_STKTOP);
+ break;
+ case 6:
+ x86emu_fpu_R_fdivr(stkelem, X86EMU_FPU_STKTOP);
+ break;
+ case 7:
+ x86emu_fpu_R_fdiv(stkelem, X86EMU_FPU_STKTOP);
+ break;
+ }
+ break;
+ default:
+ switch (rh) {
+ case 0:
+ x86emu_fpu_M_fadd(X86EMU_FPU_DOUBLE, destoffset);
+ break;
+ case 1:
+ x86emu_fpu_M_fmul(X86EMU_FPU_DOUBLE, destoffset);
+ break;
+ case 2:
+ x86emu_fpu_M_fcom(X86EMU_FPU_DOUBLE, destoffset);
+ break;
+ case 3:
+ x86emu_fpu_M_fcomp(X86EMU_FPU_DOUBLE, destoffset);
+ break;
+ case 4:
+ x86emu_fpu_M_fsub(X86EMU_FPU_DOUBLE, destoffset);
+ break;
+ case 5:
+ x86emu_fpu_M_fsubr(X86EMU_FPU_DOUBLE, destoffset);
+ break;
+ case 6:
+ x86emu_fpu_M_fdiv(X86EMU_FPU_DOUBLE, destoffset);
+ break;
+ case 7:
+ x86emu_fpu_M_fdivr(X86EMU_FPU_DOUBLE, destoffset);
+ break;
+ }
+ }
+#endif
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR_NO_TRACE();
+}
+
+#ifdef CONFIG_DEBUG
+
+static char *x86emu_fpu_op_dd_tab[] = {
+ "FLD\tQWORD PTR ", "ESC_DD\t29,", "FST\tQWORD PTR ", "FSTP\tQWORD PTR ",
+ "FRSTOR\t", "ESC_DD\t2D,", "FSAVE\t", "FSTSW\t",
+
+ "FLD\tQWORD PTR ", "ESC_DD\t29,", "FST\tQWORD PTR ", "FSTP\tQWORD PTR ",
+ "FRSTOR\t", "ESC_DD\t2D,", "FSAVE\t", "FSTSW\t",
+
+ "FLD\tQWORD PTR ", "ESC_DD\t29,", "FST\tQWORD PTR ", "FSTP\tQWORD PTR ",
+ "FRSTOR\t", "ESC_DD\t2D,", "FSAVE\t", "FSTSW\t",
+
+ "FFREE\t", "FXCH\t", "FST\t", "FSTP\t",
+ "ESC_DD\t2C,", "ESC_DD\t2D,", "ESC_DD\t2E,", "ESC_DD\t2F,",
+};
+
+#endif /* CONFIG_DEBUG */
+
+/* opcode=0xdd */
+void x86emuOp_esc_coprocess_dd(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+ u8 stkelem;
+
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ DECODE_PRINTINSTR32(x86emu_fpu_op_dd_tab, mod, rh, rl);
+ switch (mod) {
+ case 0:
+ destoffset = decode_rm00_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 1:
+ destoffset = decode_rm01_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 2:
+ destoffset = decode_rm10_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 3: /* register to register */
+ stkelem = (u8)rl;
+ DECODE_PRINTF2("\tST(%d),ST\n", stkelem);
+ break;
+ }
+#ifdef X86EMU_FPU_PRESENT
+ switch (mod) {
+ case 3:
+ switch (rh) {
+ case 0:
+ x86emu_fpu_R_ffree(stkelem);
+ break;
+ case 1:
+ x86emu_fpu_R_fxch(stkelem);
+ break;
+ case 2:
+ x86emu_fpu_R_fst(stkelem); /* register version */
+ break;
+ case 3:
+ x86emu_fpu_R_fstp(stkelem); /* register version */
+ break;
+ default:
+ x86emu_fpu_illegal();
+ break;
+ }
+ break;
+ default:
+ switch (rh) {
+ case 0:
+ x86emu_fpu_M_fld(X86EMU_FPU_DOUBLE, destoffset);
+ break;
+ case 1:
+ x86emu_fpu_illegal();
+ break;
+ case 2:
+ x86emu_fpu_M_fst(X86EMU_FPU_DOUBLE, destoffset);
+ break;
+ case 3:
+ x86emu_fpu_M_fstp(X86EMU_FPU_DOUBLE, destoffset);
+ break;
+ case 4:
+ x86emu_fpu_M_frstor(X86EMU_FPU_WORD, destoffset);
+ break;
+ case 5:
+ x86emu_fpu_illegal();
+ break;
+ case 6:
+ x86emu_fpu_M_fsave(X86EMU_FPU_WORD, destoffset);
+ break;
+ case 7:
+ x86emu_fpu_M_fstsw(X86EMU_FPU_WORD, destoffset);
+ break;
+ }
+ }
+#endif
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR_NO_TRACE();
+}
+
+#ifdef CONFIG_DEBUG
+
+static char *x86emu_fpu_op_de_tab[] =
+{
+ "FIADD\tWORD PTR ", "FIMUL\tWORD PTR ", "FICOM\tWORD PTR ",
+ "FICOMP\tWORD PTR ",
+ "FISUB\tWORD PTR ", "FISUBR\tWORD PTR ", "FIDIV\tWORD PTR ",
+ "FIDIVR\tWORD PTR ",
+
+ "FIADD\tWORD PTR ", "FIMUL\tWORD PTR ", "FICOM\tWORD PTR ",
+ "FICOMP\tWORD PTR ",
+ "FISUB\tWORD PTR ", "FISUBR\tWORD PTR ", "FIDIV\tWORD PTR ",
+ "FIDIVR\tWORD PTR ",
+
+ "FIADD\tWORD PTR ", "FIMUL\tWORD PTR ", "FICOM\tWORD PTR ",
+ "FICOMP\tWORD PTR ",
+ "FISUB\tWORD PTR ", "FISUBR\tWORD PTR ", "FIDIV\tWORD PTR ",
+ "FIDIVR\tWORD PTR ",
+
+ "FADDP\t", "FMULP\t", "FCOMP\t", "FCOMPP\t",
+ "FSUBRP\t", "FSUBP\t", "FDIVRP\t", "FDIVP\t",
+};
+
+#endif /* CONFIG_DEBUG */
+
+/* opcode=0xde */
+void x86emuOp_esc_coprocess_de(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+ u8 stkelem;
+
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ DECODE_PRINTINSTR32(x86emu_fpu_op_de_tab, mod, rh, rl);
+ switch (mod) {
+ case 0:
+ destoffset = decode_rm00_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 1:
+ destoffset = decode_rm01_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 2:
+ destoffset = decode_rm10_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 3: /* register to register */
+ stkelem = (u8)rl;
+ DECODE_PRINTF2("\tST(%d),ST\n", stkelem);
+ break;
+ }
+#ifdef X86EMU_FPU_PRESENT
+ switch (mod) {
+ case 3:
+ switch (rh) {
+ case 0:
+ x86emu_fpu_R_faddp(stkelem, X86EMU_FPU_STKTOP);
+ break;
+ case 1:
+ x86emu_fpu_R_fmulp(stkelem, X86EMU_FPU_STKTOP);
+ break;
+ case 2:
+ x86emu_fpu_R_fcomp(stkelem, X86EMU_FPU_STKTOP);
+ break;
+ case 3:
+ if (stkelem == 1)
+ x86emu_fpu_R_fcompp(stkelem, X86EMU_FPU_STKTOP);
+ else
+ x86emu_fpu_illegal();
+ break;
+ case 4:
+ x86emu_fpu_R_fsubrp(stkelem, X86EMU_FPU_STKTOP);
+ break;
+ case 5:
+ x86emu_fpu_R_fsubp(stkelem, X86EMU_FPU_STKTOP);
+ break;
+ case 6:
+ x86emu_fpu_R_fdivrp(stkelem, X86EMU_FPU_STKTOP);
+ break;
+ case 7:
+ x86emu_fpu_R_fdivp(stkelem, X86EMU_FPU_STKTOP);
+ break;
+ }
+ break;
+ default:
+ switch (rh) {
+ case 0:
+ x86emu_fpu_M_fiadd(X86EMU_FPU_WORD, destoffset);
+ break;
+ case 1:
+ x86emu_fpu_M_fimul(X86EMU_FPU_WORD, destoffset);
+ break;
+ case 2:
+ x86emu_fpu_M_ficom(X86EMU_FPU_WORD, destoffset);
+ break;
+ case 3:
+ x86emu_fpu_M_ficomp(X86EMU_FPU_WORD, destoffset);
+ break;
+ case 4:
+ x86emu_fpu_M_fisub(X86EMU_FPU_WORD, destoffset);
+ break;
+ case 5:
+ x86emu_fpu_M_fisubr(X86EMU_FPU_WORD, destoffset);
+ break;
+ case 6:
+ x86emu_fpu_M_fidiv(X86EMU_FPU_WORD, destoffset);
+ break;
+ case 7:
+ x86emu_fpu_M_fidivr(X86EMU_FPU_WORD, destoffset);
+ break;
+ }
+ }
+#endif
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR_NO_TRACE();
+}
+
+#ifdef CONFIG_DEBUG
+
+static char *x86emu_fpu_op_df_tab[] = {
+ /* mod == 00 */
+ "FILD\tWORD PTR ", "ESC_DF\t39\n", "FIST\tWORD PTR ", "FISTP\tWORD PTR ",
+ "FBLD\tTBYTE PTR ", "FILD\tQWORD PTR ", "FBSTP\tTBYTE PTR ",
+ "FISTP\tQWORD PTR ",
+
+ /* mod == 01 */
+ "FILD\tWORD PTR ", "ESC_DF\t39 ", "FIST\tWORD PTR ", "FISTP\tWORD PTR ",
+ "FBLD\tTBYTE PTR ", "FILD\tQWORD PTR ", "FBSTP\tTBYTE PTR ",
+ "FISTP\tQWORD PTR ",
+
+ /* mod == 10 */
+ "FILD\tWORD PTR ", "ESC_DF\t39 ", "FIST\tWORD PTR ", "FISTP\tWORD PTR ",
+ "FBLD\tTBYTE PTR ", "FILD\tQWORD PTR ", "FBSTP\tTBYTE PTR ",
+ "FISTP\tQWORD PTR ",
+
+ /* mod == 11 */
+ "FFREE\t", "FXCH\t", "FST\t", "FSTP\t",
+ "ESC_DF\t3C,", "ESC_DF\t3D,", "ESC_DF\t3E,", "ESC_DF\t3F,"
+};
+
+#endif /* CONFIG_DEBUG */
+
+/* opcode=0xdf */
+void x86emuOp_esc_coprocess_df(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+ u8 stkelem;
+
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ DECODE_PRINTINSTR32(x86emu_fpu_op_df_tab, mod, rh, rl);
+ switch (mod) {
+ case 0:
+ destoffset = decode_rm00_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 1:
+ destoffset = decode_rm01_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 2:
+ destoffset = decode_rm10_address(rl);
+ DECODE_PRINTF("\n");
+ break;
+ case 3: /* register to register */
+ stkelem = (u8)rl;
+ DECODE_PRINTF2("\tST(%d)\n", stkelem);
+ break;
+ }
+#ifdef X86EMU_FPU_PRESENT
+ switch (mod) {
+ case 3:
+ switch (rh) {
+ case 0:
+ x86emu_fpu_R_ffree(stkelem);
+ break;
+ case 1:
+ x86emu_fpu_R_fxch(stkelem);
+ break;
+ case 2:
+ x86emu_fpu_R_fst(stkelem); /* register version */
+ break;
+ case 3:
+ x86emu_fpu_R_fstp(stkelem); /* register version */
+ break;
+ default:
+ x86emu_fpu_illegal();
+ break;
+ }
+ break;
+ default:
+ switch (rh) {
+ case 0:
+ x86emu_fpu_M_fild(X86EMU_FPU_WORD, destoffset);
+ break;
+ case 1:
+ x86emu_fpu_illegal();
+ break;
+ case 2:
+ x86emu_fpu_M_fist(X86EMU_FPU_WORD, destoffset);
+ break;
+ case 3:
+ x86emu_fpu_M_fistp(X86EMU_FPU_WORD, destoffset);
+ break;
+ case 4:
+ x86emu_fpu_M_fbld(X86EMU_FPU_BSD, destoffset);
+ break;
+ case 5:
+ x86emu_fpu_M_fild(X86EMU_FPU_LONG, destoffset);
+ break;
+ case 6:
+ x86emu_fpu_M_fbstp(X86EMU_FPU_BSD, destoffset);
+ break;
+ case 7:
+ x86emu_fpu_M_fistp(X86EMU_FPU_LONG, destoffset);
+ break;
+ }
+ }
+#endif
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR_NO_TRACE();
+}
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1996-1999 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: Header file for FPU instruction decoding.
+*
+****************************************************************************/
+
+#ifndef __X86EMU_FPU_H
+#define __X86EMU_FPU_H
+
+#ifdef __cplusplus
+extern "C" { /* Use "C" linkage when in C++ mode */
+#endif
+
+/* these have to be defined, whether 8087 support compiled in or not. */
+
+extern void x86emuOp_esc_coprocess_d8 (u8 op1);
+extern void x86emuOp_esc_coprocess_d9 (u8 op1);
+extern void x86emuOp_esc_coprocess_da (u8 op1);
+extern void x86emuOp_esc_coprocess_db (u8 op1);
+extern void x86emuOp_esc_coprocess_dc (u8 op1);
+extern void x86emuOp_esc_coprocess_dd (u8 op1);
+extern void x86emuOp_esc_coprocess_de (u8 op1);
+extern void x86emuOp_esc_coprocess_df (u8 op1);
+
+#ifdef __cplusplus
+} /* End of "C" linkage for C++ */
+#endif
+
+#endif /* __X86EMU_FPU_H */
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1991-2004 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: This file includes subroutines to implement the decoding
+* and emulation of all the x86 processor instructions.
+*
+* There are approximately 250 subroutines in here, which correspond
+* to the 256 byte-"opcodes" found on the 8086. The table which
+* dispatches this is found in the files optab.[ch].
+*
+* Each opcode proc has a comment preceeding it which gives it's table
+* address. Several opcodes are missing (undefined) in the table.
+*
+* Each proc includes information for decoding (DECODE_PRINTF and
+* DECODE_PRINTF2), debugging (TRACE_REGS, SINGLE_STEP), and misc
+* functions (START_OF_INSTR, END_OF_INSTR).
+*
+* Many of the procedures are *VERY* similar in coding. This has
+* allowed for a very large amount of code to be generated in a fairly
+* short amount of time (i.e. cut, paste, and modify). The result is
+* that much of the code below could have been folded into subroutines
+* for a large reduction in size of this file. The downside would be
+* that there would be a penalty in execution speed. The file could
+* also have been *MUCH* larger by inlining certain functions which
+* were called. This could have resulted even faster execution. The
+* prime directive I used to decide whether to inline the code or to
+* modularize it, was basically: 1) no unnecessary subroutine calls,
+* 2) no routines more than about 200 lines in size, and 3) modularize
+* any code that I might not get right the first time. The fetch_*
+* subroutines fall into the latter category. The The decode_* fall
+* into the second category. The coding of the "switch(mod){ .... }"
+* in many of the subroutines below falls into the first category.
+* Especially, the coding of {add,and,or,sub,...}_{byte,word}
+* subroutines are an especially glaring case of the third guideline.
+* Since so much of the code is cloned from other modules (compare
+* opcode #00 to opcode #01), making the basic operations subroutine
+* calls is especially important; otherwise mistakes in coding an
+* "add" would represent a nightmare in maintenance.
+*
+****************************************************************************/
+
+#include "x86emui.h"
+
+/*----------------------------- Implementation ----------------------------*/
+
+/* constant arrays to do several instructions in just one function */
+
+#ifdef CONFIG_DEBUG
+static char *x86emu_GenOpName[8] = {
+ "ADD", "OR", "ADC", "SBB", "AND", "SUB", "XOR", "CMP"};
+#endif
+
+/* used by several opcodes */
+static u8 (*genop_byte_operation[])(u8 d, u8 s) =
+{
+ add_byte, /* 00 */
+ or_byte, /* 01 */
+ adc_byte, /* 02 */
+ sbb_byte, /* 03 */
+ and_byte, /* 04 */
+ sub_byte, /* 05 */
+ xor_byte, /* 06 */
+ cmp_byte, /* 07 */
+};
+
+static u16 (*genop_word_operation[])(u16 d, u16 s) =
+{
+ add_word, /*00 */
+ or_word, /*01 */
+ adc_word, /*02 */
+ sbb_word, /*03 */
+ and_word, /*04 */
+ sub_word, /*05 */
+ xor_word, /*06 */
+ cmp_word, /*07 */
+};
+
+static u32 (*genop_long_operation[])(u32 d, u32 s) =
+{
+ add_long, /*00 */
+ or_long, /*01 */
+ adc_long, /*02 */
+ sbb_long, /*03 */
+ and_long, /*04 */
+ sub_long, /*05 */
+ xor_long, /*06 */
+ cmp_long, /*07 */
+};
+
+/* used by opcodes 80, c0, d0, and d2. */
+static u8(*opcD0_byte_operation[])(u8 d, u8 s) =
+{
+ rol_byte,
+ ror_byte,
+ rcl_byte,
+ rcr_byte,
+ shl_byte,
+ shr_byte,
+ shl_byte, /* sal_byte === shl_byte by definition */
+ sar_byte,
+};
+
+/* used by opcodes c1, d1, and d3. */
+static u16(*opcD1_word_operation[])(u16 s, u8 d) =
+{
+ rol_word,
+ ror_word,
+ rcl_word,
+ rcr_word,
+ shl_word,
+ shr_word,
+ shl_word, /* sal_byte === shl_byte by definition */
+ sar_word,
+};
+
+/* used by opcodes c1, d1, and d3. */
+static u32 (*opcD1_long_operation[])(u32 s, u8 d) =
+{
+ rol_long,
+ ror_long,
+ rcl_long,
+ rcr_long,
+ shl_long,
+ shr_long,
+ shl_long, /* sal_byte === shl_byte by definition */
+ sar_long,
+};
+
+#ifdef CONFIG_DEBUG
+
+static char *opF6_names[8] =
+ { "TEST\t", "", "NOT\t", "NEG\t", "MUL\t", "IMUL\t", "DIV\t", "IDIV\t" };
+
+#endif
+
+/****************************************************************************
+PARAMETERS:
+op1 - Instruction op code
+
+REMARKS:
+Handles illegal opcodes.
+****************************************************************************/
+void x86emuOp_illegal_op(
+ u8 op1)
+{
+ START_OF_INSTR();
+ if (M.x86.R_SP != 0) {
+ DECODE_PRINTF("ILLEGAL X86 OPCODE\n");
+ TRACE_REGS();
+ DB( printk("%04x:%04x: %02X ILLEGAL X86 OPCODE!\n",
+ M.x86.R_CS, M.x86.R_IP-1,op1));
+ HALT_SYS();
+ }
+ else {
+ /* If we get here, it means the stack pointer is back to zero
+ * so we are just returning from an emulator service call
+ * so therte is no need to display an error message. We trap
+ * the emulator with an 0xF1 opcode to finish the service
+ * call.
+ */
+ X86EMU_halt_sys();
+ }
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcodes 0x00, 0x08, 0x10, 0x18, 0x20, 0x28, 0x30, 0x38
+****************************************************************************/
+void x86emuOp_genop_byte_RM_R(u8 op1)
+{
+ int mod, rl, rh;
+ uint destoffset;
+ u8 *destreg, *srcreg;
+ u8 destval;
+
+ op1 = (op1 >> 3) & 0x7;
+
+ START_OF_INSTR();
+ DECODE_PRINTF(x86emu_GenOpName[op1]);
+ DECODE_PRINTF("\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if(mod<3)
+ { destoffset = decode_rmXX_address(mod,rl);
+ DECODE_PRINTF(",");
+ destval = fetch_data_byte(destoffset);
+ srcreg = DECODE_RM_BYTE_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ destval = genop_byte_operation[op1](destval, *srcreg);
+ if (op1 != 7)
+ store_data_byte(destoffset, destval);
+ }
+ else
+ { /* register to register */
+ destreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_BYTE_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = genop_byte_operation[op1](*destreg, *srcreg);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcodes 0x01, 0x09, 0x11, 0x19, 0x21, 0x29, 0x31, 0x39
+****************************************************************************/
+void x86emuOp_genop_word_RM_R(u8 op1)
+{
+ int mod, rl, rh;
+ uint destoffset;
+
+ op1 = (op1 >> 3) & 0x7;
+
+ START_OF_INSTR();
+ DECODE_PRINTF(x86emu_GenOpName[op1]);
+ DECODE_PRINTF("\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+
+ if(mod<3) {
+ destoffset = decode_rmXX_address(mod,rl);
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *srcreg;
+
+ DECODE_PRINTF(",");
+ destval = fetch_data_long(destoffset);
+ srcreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ destval = genop_long_operation[op1](destval, *srcreg);
+ if (op1 != 7)
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *srcreg;
+
+ DECODE_PRINTF(",");
+ destval = fetch_data_word(destoffset);
+ srcreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ destval = genop_word_operation[op1](destval, *srcreg);
+ if (op1 != 7)
+ store_data_word(destoffset, destval);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg, *srcreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = genop_long_operation[op1](*destreg, *srcreg);
+ } else {
+ u16 *destreg, *srcreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = genop_word_operation[op1](*destreg, *srcreg);
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcodes 0x02, 0x0a, 0x12, 0x1a, 0x22, 0x2a, 0x32, 0x3a
+****************************************************************************/
+void x86emuOp_genop_byte_R_RM(u8 op1)
+{
+ int mod, rl, rh;
+ u8 *destreg, *srcreg;
+ uint srcoffset;
+ u8 srcval;
+
+ op1 = (op1 >> 3) & 0x7;
+
+ START_OF_INSTR();
+ DECODE_PRINTF(x86emu_GenOpName[op1]);
+ DECODE_PRINTF("\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destreg = DECODE_RM_BYTE_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod,rl);
+ srcval = fetch_data_byte(srcoffset);
+ } else { /* register to register */
+ destreg = DECODE_RM_BYTE_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_BYTE_REGISTER(rl);
+ srcval = *srcreg;
+ }
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = genop_byte_operation[op1](*destreg, srcval);
+
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcodes 0x03, 0x0b, 0x13, 0x1b, 0x23, 0x2b, 0x33, 0x3b
+****************************************************************************/
+void x86emuOp_genop_word_R_RM(u8 op1)
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ u32 *destreg32, srcval;
+ u16 *destreg;
+
+ op1 = (op1 >> 3) & 0x7;
+
+ START_OF_INSTR();
+ DECODE_PRINTF(x86emu_GenOpName[op1]);
+ DECODE_PRINTF("\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ srcoffset = decode_rmXX_address(mod,rl);
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ destreg32 = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcval = fetch_data_long(srcoffset);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg32 = genop_long_operation[op1](*destreg32, srcval);
+ } else {
+ destreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcval = fetch_data_word(srcoffset);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = genop_word_operation[op1](*destreg, srcval);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *srcreg;
+ destreg32 = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg32 = genop_long_operation[op1](*destreg32, *srcreg);
+ } else {
+ u16 *srcreg;
+ destreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = genop_word_operation[op1](*destreg, *srcreg);
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcodes 0x04, 0x0c, 0x14, 0x1c, 0x24, 0x2c, 0x34, 0x3c
+****************************************************************************/
+void x86emuOp_genop_byte_AL_IMM(u8 op1)
+{
+ u8 srcval;
+
+ op1 = (op1 >> 3) & 0x7;
+
+ START_OF_INSTR();
+ DECODE_PRINTF(x86emu_GenOpName[op1]);
+ DECODE_PRINTF("\tAL,");
+ srcval = fetch_byte_imm();
+ DECODE_PRINTF2("%x\n", srcval);
+ TRACE_AND_STEP();
+ M.x86.R_AL = genop_byte_operation[op1](M.x86.R_AL, srcval);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcodes 0x05, 0x0d, 0x15, 0x1d, 0x25, 0x2d, 0x35, 0x3d
+****************************************************************************/
+void x86emuOp_genop_word_AX_IMM(u8 op1)
+{
+ u32 srcval;
+
+ op1 = (op1 >> 3) & 0x7;
+
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF(x86emu_GenOpName[op1]);
+ DECODE_PRINTF("\tEAX,");
+ srcval = fetch_long_imm();
+ } else {
+ DECODE_PRINTF(x86emu_GenOpName[op1]);
+ DECODE_PRINTF("\tAX,");
+ srcval = fetch_word_imm();
+ }
+ DECODE_PRINTF2("%x\n", srcval);
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ M.x86.R_EAX = genop_long_operation[op1](M.x86.R_EAX, srcval);
+ } else {
+ M.x86.R_AX = genop_word_operation[op1](M.x86.R_AX, (u16)srcval);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x06
+****************************************************************************/
+void x86emuOp_push_ES(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("PUSH\tES\n");
+ TRACE_AND_STEP();
+ push_word(M.x86.R_ES);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x07
+****************************************************************************/
+void x86emuOp_pop_ES(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("POP\tES\n");
+ TRACE_AND_STEP();
+ M.x86.R_ES = pop_word();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0e
+****************************************************************************/
+void x86emuOp_push_CS(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("PUSH\tCS\n");
+ TRACE_AND_STEP();
+ push_word(M.x86.R_CS);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f. Escape for two-byte opcode (286 or better)
+****************************************************************************/
+void x86emuOp_two_byte(u8 X86EMU_UNUSED(op1))
+{
+ u8 op2 = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++));
+ INC_DECODED_INST_LEN(1);
+ (*x86emu_optab2[op2])(op2);
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x16
+****************************************************************************/
+void x86emuOp_push_SS(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("PUSH\tSS\n");
+ TRACE_AND_STEP();
+ push_word(M.x86.R_SS);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x17
+****************************************************************************/
+void x86emuOp_pop_SS(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("POP\tSS\n");
+ TRACE_AND_STEP();
+ M.x86.R_SS = pop_word();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x1e
+****************************************************************************/
+void x86emuOp_push_DS(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("PUSH\tDS\n");
+ TRACE_AND_STEP();
+ push_word(M.x86.R_DS);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x1f
+****************************************************************************/
+void x86emuOp_pop_DS(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("POP\tDS\n");
+ TRACE_AND_STEP();
+ M.x86.R_DS = pop_word();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x26
+****************************************************************************/
+void x86emuOp_segovr_ES(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("ES:\n");
+ TRACE_AND_STEP();
+ M.x86.mode |= SYSMODE_SEGOVR_ES;
+ /*
+ * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4
+ * opcode subroutines we do not want to do this.
+ */
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x27
+****************************************************************************/
+void x86emuOp_daa(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("DAA\n");
+ TRACE_AND_STEP();
+ M.x86.R_AL = daa_byte(M.x86.R_AL);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x2e
+****************************************************************************/
+void x86emuOp_segovr_CS(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("CS:\n");
+ TRACE_AND_STEP();
+ M.x86.mode |= SYSMODE_SEGOVR_CS;
+ /* note no DECODE_CLEAR_SEGOVR here. */
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x2f
+****************************************************************************/
+void x86emuOp_das(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("DAS\n");
+ TRACE_AND_STEP();
+ M.x86.R_AL = das_byte(M.x86.R_AL);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x36
+****************************************************************************/
+void x86emuOp_segovr_SS(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("SS:\n");
+ TRACE_AND_STEP();
+ M.x86.mode |= SYSMODE_SEGOVR_SS;
+ /* no DECODE_CLEAR_SEGOVR ! */
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x37
+****************************************************************************/
+void x86emuOp_aaa(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("AAA\n");
+ TRACE_AND_STEP();
+ M.x86.R_AX = aaa_word(M.x86.R_AX);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x3e
+****************************************************************************/
+void x86emuOp_segovr_DS(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("DS:\n");
+ TRACE_AND_STEP();
+ M.x86.mode |= SYSMODE_SEGOVR_DS;
+ /* NO DECODE_CLEAR_SEGOVR! */
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x3f
+****************************************************************************/
+void x86emuOp_aas(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("AAS\n");
+ TRACE_AND_STEP();
+ M.x86.R_AX = aas_word(M.x86.R_AX);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x40 - 0x47
+****************************************************************************/
+void x86emuOp_inc_register(u8 op1)
+{
+ START_OF_INSTR();
+ op1 &= 0x7;
+ DECODE_PRINTF("INC\t");
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *reg;
+ reg = DECODE_RM_LONG_REGISTER(op1);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *reg = inc_long(*reg);
+ } else {
+ u16 *reg;
+ reg = DECODE_RM_WORD_REGISTER(op1);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *reg = inc_word(*reg);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x48 - 0x4F
+****************************************************************************/
+void x86emuOp_dec_register(u8 op1)
+{
+ START_OF_INSTR();
+ op1 &= 0x7;
+ DECODE_PRINTF("DEC\t");
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *reg;
+ reg = DECODE_RM_LONG_REGISTER(op1);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *reg = dec_long(*reg);
+ } else {
+ u16 *reg;
+ reg = DECODE_RM_WORD_REGISTER(op1);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *reg = dec_word(*reg);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x50 - 0x57
+****************************************************************************/
+void x86emuOp_push_register(u8 op1)
+{
+ START_OF_INSTR();
+ op1 &= 0x7;
+ DECODE_PRINTF("PUSH\t");
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *reg;
+ reg = DECODE_RM_LONG_REGISTER(op1);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ push_long(*reg);
+ } else {
+ u16 *reg;
+ reg = DECODE_RM_WORD_REGISTER(op1);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ push_word(*reg);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x58 - 0x5F
+****************************************************************************/
+void x86emuOp_pop_register(u8 op1)
+{
+ START_OF_INSTR();
+ op1 &= 0x7;
+ DECODE_PRINTF("POP\t");
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *reg;
+ reg = DECODE_RM_LONG_REGISTER(op1);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *reg = pop_long();
+ } else {
+ u16 *reg;
+ reg = DECODE_RM_WORD_REGISTER(op1);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *reg = pop_word();
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x60
+****************************************************************************/
+void x86emuOp_push_all(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("PUSHAD\n");
+ } else {
+ DECODE_PRINTF("PUSHA\n");
+ }
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 old_sp = M.x86.R_ESP;
+
+ push_long(M.x86.R_EAX);
+ push_long(M.x86.R_ECX);
+ push_long(M.x86.R_EDX);
+ push_long(M.x86.R_EBX);
+ push_long(old_sp);
+ push_long(M.x86.R_EBP);
+ push_long(M.x86.R_ESI);
+ push_long(M.x86.R_EDI);
+ } else {
+ u16 old_sp = M.x86.R_SP;
+
+ push_word(M.x86.R_AX);
+ push_word(M.x86.R_CX);
+ push_word(M.x86.R_DX);
+ push_word(M.x86.R_BX);
+ push_word(old_sp);
+ push_word(M.x86.R_BP);
+ push_word(M.x86.R_SI);
+ push_word(M.x86.R_DI);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x61
+****************************************************************************/
+void x86emuOp_pop_all(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("POPAD\n");
+ } else {
+ DECODE_PRINTF("POPA\n");
+ }
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ M.x86.R_EDI = pop_long();
+ M.x86.R_ESI = pop_long();
+ M.x86.R_EBP = pop_long();
+ M.x86.R_ESP += 4; /* skip ESP */
+ M.x86.R_EBX = pop_long();
+ M.x86.R_EDX = pop_long();
+ M.x86.R_ECX = pop_long();
+ M.x86.R_EAX = pop_long();
+ } else {
+ M.x86.R_DI = pop_word();
+ M.x86.R_SI = pop_word();
+ M.x86.R_BP = pop_word();
+ M.x86.R_SP += 2; /* skip SP */
+ M.x86.R_BX = pop_word();
+ M.x86.R_DX = pop_word();
+ M.x86.R_CX = pop_word();
+ M.x86.R_AX = pop_word();
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/*opcode 0x62 ILLEGAL OP, calls x86emuOp_illegal_op() */
+/*opcode 0x63 ILLEGAL OP, calls x86emuOp_illegal_op() */
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x64
+****************************************************************************/
+void x86emuOp_segovr_FS(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("FS:\n");
+ TRACE_AND_STEP();
+ M.x86.mode |= SYSMODE_SEGOVR_FS;
+ /*
+ * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4
+ * opcode subroutines we do not want to do this.
+ */
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x65
+****************************************************************************/
+void x86emuOp_segovr_GS(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("GS:\n");
+ TRACE_AND_STEP();
+ M.x86.mode |= SYSMODE_SEGOVR_GS;
+ /*
+ * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4
+ * opcode subroutines we do not want to do this.
+ */
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x66 - prefix for 32-bit register
+****************************************************************************/
+void x86emuOp_prefix_data(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("DATA:\n");
+ TRACE_AND_STEP();
+ M.x86.mode |= SYSMODE_PREFIX_DATA;
+ /* note no DECODE_CLEAR_SEGOVR here. */
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x67 - prefix for 32-bit address
+****************************************************************************/
+void x86emuOp_prefix_addr(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("ADDR:\n");
+ TRACE_AND_STEP();
+ M.x86.mode |= SYSMODE_PREFIX_ADDR;
+ /* note no DECODE_CLEAR_SEGOVR here. */
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x68
+****************************************************************************/
+void x86emuOp_push_word_IMM(u8 X86EMU_UNUSED(op1))
+{
+ u32 imm;
+
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ imm = fetch_long_imm();
+ } else {
+ imm = fetch_word_imm();
+ }
+ DECODE_PRINTF2("PUSH\t%x\n", imm);
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ push_long(imm);
+ } else {
+ push_word((u16)imm);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x69
+****************************************************************************/
+void x86emuOp_imul_word_IMM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("IMUL\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ srcoffset = decode_rmXX_address(mod, rl);
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg;
+ u32 srcval;
+ u32 res_lo,res_hi;
+ s32 imm;
+
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcval = fetch_data_long(srcoffset);
+ imm = fetch_long_imm();
+ DECODE_PRINTF2(",%d\n", (s32)imm);
+ TRACE_AND_STEP();
+ imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);
+ if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) ||
+ (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ } else {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ }
+ *destreg = (u32)res_lo;
+ } else {
+ u16 *destreg;
+ u16 srcval;
+ u32 res;
+ s16 imm;
+
+ destreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcval = fetch_data_word(srcoffset);
+ imm = fetch_word_imm();
+ DECODE_PRINTF2(",%d\n", (s32)imm);
+ TRACE_AND_STEP();
+ res = (s16)srcval * (s16)imm;
+ if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) ||
+ (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ } else {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ }
+ *destreg = (u16)res;
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg,*srcreg;
+ u32 res_lo,res_hi;
+ s32 imm;
+
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ imm = fetch_long_imm();
+ DECODE_PRINTF2(",%d\n", (s32)imm);
+ TRACE_AND_STEP();
+ imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm);
+ if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) ||
+ (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ } else {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ }
+ *destreg = (u32)res_lo;
+ } else {
+ u16 *destreg,*srcreg;
+ u32 res;
+ s16 imm;
+
+ destreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ imm = fetch_word_imm();
+ DECODE_PRINTF2(",%d\n", (s32)imm);
+ res = (s16)*srcreg * (s16)imm;
+ if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) ||
+ (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ } else {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ }
+ *destreg = (u16)res;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x6a
+****************************************************************************/
+void x86emuOp_push_byte_IMM(u8 X86EMU_UNUSED(op1))
+{
+ s16 imm;
+
+ START_OF_INSTR();
+ imm = (s8)fetch_byte_imm();
+ DECODE_PRINTF2("PUSH\t%d\n", imm);
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ push_long(imm);
+ } else {
+ push_word(imm);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x6b
+****************************************************************************/
+void x86emuOp_imul_byte_IMM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ s8 imm;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("IMUL\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ srcoffset = decode_rmXX_address(mod, rl);
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg;
+ u32 srcval;
+ u32 res_lo,res_hi;
+
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcval = fetch_data_long(srcoffset);
+ imm = fetch_byte_imm();
+ DECODE_PRINTF2(",%d\n", (s32)imm);
+ TRACE_AND_STEP();
+ imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);
+ if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) ||
+ (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ } else {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ }
+ *destreg = (u32)res_lo;
+ } else {
+ u16 *destreg;
+ u16 srcval;
+ u32 res;
+
+ destreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcval = fetch_data_word(srcoffset);
+ imm = fetch_byte_imm();
+ DECODE_PRINTF2(",%d\n", (s32)imm);
+ TRACE_AND_STEP();
+ res = (s16)srcval * (s16)imm;
+ if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) ||
+ (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ } else {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ }
+ *destreg = (u16)res;
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg,*srcreg;
+ u32 res_lo,res_hi;
+
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ imm = fetch_byte_imm();
+ DECODE_PRINTF2(",%d\n", (s32)imm);
+ TRACE_AND_STEP();
+ imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm);
+ if ((((res_lo & 0x80000000) == 0) && (res_hi == 0x00000000)) ||
+ (((res_lo & 0x80000000) != 0) && (res_hi == 0xFFFFFFFF))) {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ } else {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ }
+ *destreg = (u32)res_lo;
+ } else {
+ u16 *destreg,*srcreg;
+ u32 res;
+
+ destreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ imm = fetch_byte_imm();
+ DECODE_PRINTF2(",%d\n", (s32)imm);
+ TRACE_AND_STEP();
+ res = (s16)*srcreg * (s16)imm;
+ if ((((res & 0x8000) == 0) && ((res >> 16) == 0x0000)) ||
+ (((res & 0x8000) != 0) && ((res >> 16) == 0xFFFF))) {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ } else {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ }
+ *destreg = (u16)res;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x6c
+****************************************************************************/
+void x86emuOp_ins_byte(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("INSB\n");
+ ins(1);
+ TRACE_AND_STEP();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x6d
+****************************************************************************/
+void x86emuOp_ins_word(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("INSD\n");
+ ins(4);
+ } else {
+ DECODE_PRINTF("INSW\n");
+ ins(2);
+ }
+ TRACE_AND_STEP();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x6e
+****************************************************************************/
+void x86emuOp_outs_byte(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("OUTSB\n");
+ outs(1);
+ TRACE_AND_STEP();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x6f
+****************************************************************************/
+void x86emuOp_outs_word(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("OUTSD\n");
+ outs(4);
+ } else {
+ DECODE_PRINTF("OUTSW\n");
+ outs(2);
+ }
+ TRACE_AND_STEP();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x70 - 0x7F
+****************************************************************************/
+int x86emu_check_jump_condition(u8 op);
+
+void x86emuOp_jump_near_cond(u8 op1)
+{
+ s8 offset;
+ u16 target;
+ int cond;
+
+ /* jump to byte offset if overflow flag is set */
+ START_OF_INSTR();
+ cond = x86emu_check_jump_condition(op1 & 0xF);
+ offset = (s8)fetch_byte_imm();
+ target = (u16)(M.x86.R_IP + (s16)offset);
+ DECODE_PRINTF2("%x\n", target);
+ TRACE_AND_STEP();
+ if (cond) {
+ M.x86.R_IP = target;
+ JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, M.x86.R_IP, " NEAR COND ");
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x80
+****************************************************************************/
+void x86emuOp_opc80_byte_RM_IMM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ u8 *destreg;
+ uint destoffset;
+ u8 imm;
+ u8 destval;
+
+ /*
+ * Weirdo special case instruction format. Part of the opcode
+ * held below in "RH". Doubly nested case would result, except
+ * that the decoded instruction
+ */
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+#ifdef CONFIG_DEBUG
+ if (DEBUG_DECODE()) {
+ /* XXX DECODE_PRINTF may be changed to something more
+ general, so that it is important to leave the strings
+ in the same format, even though the result is that the
+ above test is done twice. */
+
+ switch (rh) {
+ case 0:
+ DECODE_PRINTF("ADD\t");
+ break;
+ case 1:
+ DECODE_PRINTF("OR\t");
+ break;
+ case 2:
+ DECODE_PRINTF("ADC\t");
+ break;
+ case 3:
+ DECODE_PRINTF("SBB\t");
+ break;
+ case 4:
+ DECODE_PRINTF("AND\t");
+ break;
+ case 5:
+ DECODE_PRINTF("SUB\t");
+ break;
+ case 6:
+ DECODE_PRINTF("XOR\t");
+ break;
+ case 7:
+ DECODE_PRINTF("CMP\t");
+ break;
+ }
+ }
+#endif
+ /* know operation, decode the mod byte to find the addressing
+ mode. */
+ if (mod < 3) {
+ DECODE_PRINTF("BYTE PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",");
+ destval = fetch_data_byte(destoffset);
+ imm = fetch_byte_imm();
+ DECODE_PRINTF2("%x\n", imm);
+ TRACE_AND_STEP();
+ destval = (*genop_byte_operation[rh]) (destval, imm);
+ if (rh != 7)
+ store_data_byte(destoffset, destval);
+ } else { /* register to register */
+ destreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF(",");
+ imm = fetch_byte_imm();
+ DECODE_PRINTF2("%x\n", imm);
+ TRACE_AND_STEP();
+ *destreg = (*genop_byte_operation[rh]) (*destreg, imm);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x81
+****************************************************************************/
+void x86emuOp_opc81_word_RM_IMM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+
+ /*
+ * Weirdo special case instruction format. Part of the opcode
+ * held below in "RH". Doubly nested case would result, except
+ * that the decoded instruction
+ */
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+#ifdef CONFIG_DEBUG
+ if (DEBUG_DECODE()) {
+ /* XXX DECODE_PRINTF may be changed to something more
+ general, so that it is important to leave the strings
+ in the same format, even though the result is that the
+ above test is done twice. */
+
+ switch (rh) {
+ case 0:
+ DECODE_PRINTF("ADD\t");
+ break;
+ case 1:
+ DECODE_PRINTF("OR\t");
+ break;
+ case 2:
+ DECODE_PRINTF("ADC\t");
+ break;
+ case 3:
+ DECODE_PRINTF("SBB\t");
+ break;
+ case 4:
+ DECODE_PRINTF("AND\t");
+ break;
+ case 5:
+ DECODE_PRINTF("SUB\t");
+ break;
+ case 6:
+ DECODE_PRINTF("XOR\t");
+ break;
+ case 7:
+ DECODE_PRINTF("CMP\t");
+ break;
+ }
+ }
+#endif
+ /*
+ * Know operation, decode the mod byte to find the addressing
+ * mode.
+ */
+ if (mod < 3) {
+ DECODE_PRINTF("DWORD PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval,imm;
+
+ DECODE_PRINTF(",");
+ destval = fetch_data_long(destoffset);
+ imm = fetch_long_imm();
+ DECODE_PRINTF2("%x\n", imm);
+ TRACE_AND_STEP();
+ destval = (*genop_long_operation[rh]) (destval, imm);
+ if (rh != 7)
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval,imm;
+
+ DECODE_PRINTF(",");
+ destval = fetch_data_word(destoffset);
+ imm = fetch_word_imm();
+ DECODE_PRINTF2("%x\n", imm);
+ TRACE_AND_STEP();
+ destval = (*genop_word_operation[rh]) (destval, imm);
+ if (rh != 7)
+ store_data_word(destoffset, destval);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg, imm;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ imm = fetch_long_imm();
+ DECODE_PRINTF2("%x\n", imm);
+ TRACE_AND_STEP();
+ *destreg = (*genop_long_operation[rh]) (*destreg, imm);
+ } else {
+ u16 *destreg, imm;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ imm = fetch_word_imm();
+ DECODE_PRINTF2("%x\n", imm);
+ TRACE_AND_STEP();
+ *destreg = (*genop_word_operation[rh]) (*destreg, imm);
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x82
+****************************************************************************/
+void x86emuOp_opc82_byte_RM_IMM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ u8 *destreg;
+ uint destoffset;
+ u8 imm;
+ u8 destval;
+
+ /*
+ * Weirdo special case instruction format. Part of the opcode
+ * held below in "RH". Doubly nested case would result, except
+ * that the decoded instruction Similar to opcode 81, except that
+ * the immediate byte is sign extended to a word length.
+ */
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+#ifdef CONFIG_DEBUG
+ if (DEBUG_DECODE()) {
+ /* XXX DECODE_PRINTF may be changed to something more
+ general, so that it is important to leave the strings
+ in the same format, even though the result is that the
+ above test is done twice. */
+ switch (rh) {
+ case 0:
+ DECODE_PRINTF("ADD\t");
+ break;
+ case 1:
+ DECODE_PRINTF("OR\t");
+ break;
+ case 2:
+ DECODE_PRINTF("ADC\t");
+ break;
+ case 3:
+ DECODE_PRINTF("SBB\t");
+ break;
+ case 4:
+ DECODE_PRINTF("AND\t");
+ break;
+ case 5:
+ DECODE_PRINTF("SUB\t");
+ break;
+ case 6:
+ DECODE_PRINTF("XOR\t");
+ break;
+ case 7:
+ DECODE_PRINTF("CMP\t");
+ break;
+ }
+ }
+#endif
+ /* know operation, decode the mod byte to find the addressing
+ mode. */
+ if (mod < 3) {
+ DECODE_PRINTF("BYTE PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ destval = fetch_data_byte(destoffset);
+ imm = fetch_byte_imm();
+ DECODE_PRINTF2(",%x\n", imm);
+ TRACE_AND_STEP();
+ destval = (*genop_byte_operation[rh]) (destval, imm);
+ if (rh != 7)
+ store_data_byte(destoffset, destval);
+ } else { /* register to register */
+ destreg = DECODE_RM_BYTE_REGISTER(rl);
+ imm = fetch_byte_imm();
+ DECODE_PRINTF2(",%x\n", imm);
+ TRACE_AND_STEP();
+ *destreg = (*genop_byte_operation[rh]) (*destreg, imm);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x83
+****************************************************************************/
+void x86emuOp_opc83_word_RM_IMM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+
+ /*
+ * Weirdo special case instruction format. Part of the opcode
+ * held below in "RH". Doubly nested case would result, except
+ * that the decoded instruction Similar to opcode 81, except that
+ * the immediate byte is sign extended to a word length.
+ */
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+#ifdef CONFIG_DEBUG
+ if (DEBUG_DECODE()) {
+ /* XXX DECODE_PRINTF may be changed to something more
+ general, so that it is important to leave the strings
+ in the same format, even though the result is that the
+ above test is done twice. */
+ switch (rh) {
+ case 0:
+ DECODE_PRINTF("ADD\t");
+ break;
+ case 1:
+ DECODE_PRINTF("OR\t");
+ break;
+ case 2:
+ DECODE_PRINTF("ADC\t");
+ break;
+ case 3:
+ DECODE_PRINTF("SBB\t");
+ break;
+ case 4:
+ DECODE_PRINTF("AND\t");
+ break;
+ case 5:
+ DECODE_PRINTF("SUB\t");
+ break;
+ case 6:
+ DECODE_PRINTF("XOR\t");
+ break;
+ case 7:
+ DECODE_PRINTF("CMP\t");
+ break;
+ }
+ }
+#endif
+ /* know operation, decode the mod byte to find the addressing
+ mode. */
+ if (mod < 3) {
+ DECODE_PRINTF("DWORD PTR ");
+ destoffset = decode_rmXX_address(mod,rl);
+
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval,imm;
+
+ destval = fetch_data_long(destoffset);
+ imm = (s8) fetch_byte_imm();
+ DECODE_PRINTF2(",%x\n", imm);
+ TRACE_AND_STEP();
+ destval = (*genop_long_operation[rh]) (destval, imm);
+ if (rh != 7)
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval,imm;
+
+ destval = fetch_data_word(destoffset);
+ imm = (s8) fetch_byte_imm();
+ DECODE_PRINTF2(",%x\n", imm);
+ TRACE_AND_STEP();
+ destval = (*genop_word_operation[rh]) (destval, imm);
+ if (rh != 7)
+ store_data_word(destoffset, destval);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg, imm;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ imm = (s8) fetch_byte_imm();
+ DECODE_PRINTF2(",%x\n", imm);
+ TRACE_AND_STEP();
+ *destreg = (*genop_long_operation[rh]) (*destreg, imm);
+ } else {
+ u16 *destreg, imm;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ imm = (s8) fetch_byte_imm();
+ DECODE_PRINTF2(",%x\n", imm);
+ TRACE_AND_STEP();
+ *destreg = (*genop_word_operation[rh]) (*destreg, imm);
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x84
+****************************************************************************/
+void x86emuOp_test_byte_RM_R(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ u8 *destreg, *srcreg;
+ uint destoffset;
+ u8 destval;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("TEST\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",");
+ destval = fetch_data_byte(destoffset);
+ srcreg = DECODE_RM_BYTE_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ test_byte(destval, *srcreg);
+ } else { /* register to register */
+ destreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_BYTE_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ test_byte(*destreg, *srcreg);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x85
+****************************************************************************/
+void x86emuOp_test_word_RM_R(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("TEST\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destoffset = decode_rmXX_address(mod, rl);
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *srcreg;
+
+ DECODE_PRINTF(",");
+ destval = fetch_data_long(destoffset);
+ srcreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ test_long(destval, *srcreg);
+ } else {
+ u16 destval;
+ u16 *srcreg;
+
+ DECODE_PRINTF(",");
+ destval = fetch_data_word(destoffset);
+ srcreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ test_word(destval, *srcreg);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg,*srcreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ test_long(*destreg, *srcreg);
+ } else {
+ u16 *destreg,*srcreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ test_word(*destreg, *srcreg);
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x86
+****************************************************************************/
+void x86emuOp_xchg_byte_RM_R(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ u8 *destreg, *srcreg;
+ uint destoffset;
+ u8 destval;
+ u8 tmp;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("XCHG\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",");
+ destval = fetch_data_byte(destoffset);
+ srcreg = DECODE_RM_BYTE_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ tmp = *srcreg;
+ *srcreg = destval;
+ destval = tmp;
+ store_data_byte(destoffset, destval);
+ } else { /* register to register */
+ destreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_BYTE_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ tmp = *srcreg;
+ *srcreg = *destreg;
+ *destreg = tmp;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x87
+****************************************************************************/
+void x86emuOp_xchg_word_RM_R(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("XCHG\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",");
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *srcreg;
+ u32 destval,tmp;
+
+ destval = fetch_data_long(destoffset);
+ srcreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ tmp = *srcreg;
+ *srcreg = destval;
+ destval = tmp;
+ store_data_long(destoffset, destval);
+ } else {
+ u16 *srcreg;
+ u16 destval,tmp;
+
+ destval = fetch_data_word(destoffset);
+ srcreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ tmp = *srcreg;
+ *srcreg = destval;
+ destval = tmp;
+ store_data_word(destoffset, destval);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg,*srcreg;
+ u32 tmp;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ tmp = *srcreg;
+ *srcreg = *destreg;
+ *destreg = tmp;
+ } else {
+ u16 *destreg,*srcreg;
+ u16 tmp;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ tmp = *srcreg;
+ *srcreg = *destreg;
+ *destreg = tmp;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x88
+****************************************************************************/
+void x86emuOp_mov_byte_RM_R(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ u8 *destreg, *srcreg;
+ uint destoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOV\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_BYTE_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ store_data_byte(destoffset, *srcreg);
+ } else { /* register to register */
+ destreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_BYTE_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = *srcreg;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x89
+****************************************************************************/
+void x86emuOp_mov_word_RM_R(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOV\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destoffset = decode_rmXX_address(mod, rl);
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *srcreg;
+
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ store_data_long(destoffset, *srcreg);
+ } else {
+ u16 *srcreg;
+
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ store_data_word(destoffset, *srcreg);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg,*srcreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = *srcreg;
+ } else {
+ u16 *destreg,*srcreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = *srcreg;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x8a
+****************************************************************************/
+void x86emuOp_mov_byte_R_RM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ u8 *destreg, *srcreg;
+ uint srcoffset;
+ u8 srcval;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOV\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destreg = DECODE_RM_BYTE_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ srcval = fetch_data_byte(srcoffset);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = srcval;
+ } else { /* register to register */
+ destreg = DECODE_RM_BYTE_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = *srcreg;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x8b
+****************************************************************************/
+void x86emuOp_mov_word_R_RM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOV\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg;
+ u32 srcval;
+
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ srcval = fetch_data_long(srcoffset);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = srcval;
+ } else {
+ u16 *destreg;
+ u16 srcval;
+
+ destreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ srcval = fetch_data_word(srcoffset);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = srcval;
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg, *srcreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = *srcreg;
+ } else {
+ u16 *destreg, *srcreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = *srcreg;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x8c
+****************************************************************************/
+void x86emuOp_mov_word_RM_SR(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ u16 *destreg, *srcreg;
+ uint destoffset;
+ u16 destval;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOV\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",");
+ srcreg = decode_rm_seg_register(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ destval = *srcreg;
+ store_data_word(destoffset, destval);
+ } else { /* register to register */
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ srcreg = decode_rm_seg_register(rh);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = *srcreg;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x8d
+****************************************************************************/
+void x86emuOp_lea_word_R_M(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ u16 *srcreg;
+ uint destoffset;
+
+/*
+ * TODO: Need to handle address size prefix!
+ *
+ * lea eax,[eax+ebx*2] ??
+ */
+
+ START_OF_INSTR();
+ DECODE_PRINTF("LEA\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ srcreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *srcreg = (u16)destoffset;
+ }
+ /* } else { undefined. Do nothing. } */
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x8e
+****************************************************************************/
+void x86emuOp_mov_word_SR_RM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ u16 *destreg, *srcreg;
+ uint srcoffset;
+ u16 srcval;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOV\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destreg = decode_rm_seg_register(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ srcval = fetch_data_word(srcoffset);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = srcval;
+ } else { /* register to register */
+ destreg = decode_rm_seg_register(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = *srcreg;
+ }
+ /*
+ * Clean up, and reset all the R_xSP pointers to the correct
+ * locations. This is about 3x too much overhead (doing all the
+ * segreg ptrs when only one is needed, but this instruction
+ * *cannot* be that common, and this isn't too much work anyway.
+ */
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x8f
+****************************************************************************/
+void x86emuOp_pop_RM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("POP\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (rh != 0) {
+ DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n");
+ HALT_SYS();
+ }
+ if (mod < 3) {
+ destoffset = decode_rmXX_address(mod, rl);
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ destval = pop_long();
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ destval = pop_word();
+ store_data_word(destoffset, destval);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = pop_long();
+ } else {
+ u16 *destreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = pop_word();
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x90
+****************************************************************************/
+void x86emuOp_nop(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("NOP\n");
+ TRACE_AND_STEP();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x91-0x97
+****************************************************************************/
+void x86emuOp_xchg_word_AX_register(u8 X86EMU_UNUSED(op1))
+{
+ u32 tmp;
+
+ op1 &= 0x7;
+
+ START_OF_INSTR();
+
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *reg32;
+ DECODE_PRINTF("XCHG\tEAX,");
+ reg32 = DECODE_RM_LONG_REGISTER(op1);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ tmp = M.x86.R_EAX;
+ M.x86.R_EAX = *reg32;
+ *reg32 = tmp;
+ } else {
+ u16 *reg16;
+ DECODE_PRINTF("XCHG\tAX,");
+ reg16 = DECODE_RM_WORD_REGISTER(op1);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ tmp = M.x86.R_AX;
+ M.x86.R_AX = *reg16;
+ *reg16 = (u16)tmp;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x98
+****************************************************************************/
+void x86emuOp_cbw(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("CWDE\n");
+ } else {
+ DECODE_PRINTF("CBW\n");
+ }
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ if (M.x86.R_AX & 0x8000) {
+ M.x86.R_EAX |= 0xffff0000;
+ } else {
+ M.x86.R_EAX &= 0x0000ffff;
+ }
+ } else {
+ if (M.x86.R_AL & 0x80) {
+ M.x86.R_AH = 0xff;
+ } else {
+ M.x86.R_AH = 0x0;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x99
+****************************************************************************/
+void x86emuOp_cwd(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("CDQ\n");
+ } else {
+ DECODE_PRINTF("CWD\n");
+ }
+ DECODE_PRINTF("CWD\n");
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ if (M.x86.R_EAX & 0x80000000) {
+ M.x86.R_EDX = 0xffffffff;
+ } else {
+ M.x86.R_EDX = 0x0;
+ }
+ } else {
+ if (M.x86.R_AX & 0x8000) {
+ M.x86.R_DX = 0xffff;
+ } else {
+ M.x86.R_DX = 0x0;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x9a
+****************************************************************************/
+void x86emuOp_call_far_IMM(u8 X86EMU_UNUSED(op1))
+{
+ u16 farseg, faroff;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("CALL\t");
+ faroff = fetch_word_imm();
+ farseg = fetch_word_imm();
+ DECODE_PRINTF2("%04x:", farseg);
+ DECODE_PRINTF2("%04x\n", faroff);
+ CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, farseg, faroff, "FAR ");
+
+ /* XXX
+ *
+ * Hooked interrupt vectors calling into our "BIOS" will cause
+ * problems unless all intersegment stuff is checked for BIOS
+ * access. Check needed here. For moment, let it alone.
+ */
+ TRACE_AND_STEP();
+ push_word(M.x86.R_CS);
+ M.x86.R_CS = farseg;
+ push_word(M.x86.R_IP);
+ M.x86.R_IP = faroff;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x9b
+****************************************************************************/
+void x86emuOp_wait(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("WAIT");
+ TRACE_AND_STEP();
+ /* NADA. */
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x9c
+****************************************************************************/
+void x86emuOp_pushf_word(u8 X86EMU_UNUSED(op1))
+{
+ u32 flags;
+
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("PUSHFD\n");
+ } else {
+ DECODE_PRINTF("PUSHF\n");
+ }
+ TRACE_AND_STEP();
+
+ /* clear out *all* bits not representing flags, and turn on real bits */
+ flags = (M.x86.R_EFLG & F_MSK) | F_ALWAYS_ON;
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ push_long(flags);
+ } else {
+ push_word((u16)flags);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x9d
+****************************************************************************/
+void x86emuOp_popf_word(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("POPFD\n");
+ } else {
+ DECODE_PRINTF("POPF\n");
+ }
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ M.x86.R_EFLG = pop_long();
+ } else {
+ M.x86.R_FLG = pop_word();
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x9e
+****************************************************************************/
+void x86emuOp_sahf(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("SAHF\n");
+ TRACE_AND_STEP();
+ /* clear the lower bits of the flag register */
+ M.x86.R_FLG &= 0xffffff00;
+ /* or in the AH register into the flags register */
+ M.x86.R_FLG |= M.x86.R_AH;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x9f
+****************************************************************************/
+void x86emuOp_lahf(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("LAHF\n");
+ TRACE_AND_STEP();
+ M.x86.R_AH = (u8)(M.x86.R_FLG & 0xff);
+ /*undocumented TC++ behavior??? Nope. It's documented, but
+ you have too look real hard to notice it. */
+ M.x86.R_AH |= 0x2;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xa0
+****************************************************************************/
+void x86emuOp_mov_AL_M_IMM(u8 X86EMU_UNUSED(op1))
+{
+ u16 offset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOV\tAL,");
+ offset = fetch_word_imm();
+ DECODE_PRINTF2("[%04x]\n", offset);
+ TRACE_AND_STEP();
+ M.x86.R_AL = fetch_data_byte(offset);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xa1
+****************************************************************************/
+void x86emuOp_mov_AX_M_IMM(u8 X86EMU_UNUSED(op1))
+{
+ u16 offset;
+
+ START_OF_INSTR();
+ offset = fetch_word_imm();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF2("MOV\tEAX,[%04x]\n", offset);
+ } else {
+ DECODE_PRINTF2("MOV\tAX,[%04x]\n", offset);
+ }
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ M.x86.R_EAX = fetch_data_long(offset);
+ } else {
+ M.x86.R_AX = fetch_data_word(offset);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xa2
+****************************************************************************/
+void x86emuOp_mov_M_AL_IMM(u8 X86EMU_UNUSED(op1))
+{
+ u16 offset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOV\t");
+ offset = fetch_word_imm();
+ DECODE_PRINTF2("[%04x],AL\n", offset);
+ TRACE_AND_STEP();
+ store_data_byte(offset, M.x86.R_AL);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xa3
+****************************************************************************/
+void x86emuOp_mov_M_AX_IMM(u8 X86EMU_UNUSED(op1))
+{
+ u16 offset;
+
+ START_OF_INSTR();
+ offset = fetch_word_imm();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF2("MOV\t[%04x],EAX\n", offset);
+ } else {
+ DECODE_PRINTF2("MOV\t[%04x],AX\n", offset);
+ }
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ store_data_long(offset, M.x86.R_EAX);
+ } else {
+ store_data_word(offset, M.x86.R_AX);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xa4
+****************************************************************************/
+void x86emuOp_movs_byte(u8 X86EMU_UNUSED(op1))
+{
+ u8 val;
+ u32 count;
+ int inc;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOVS\tBYTE\n");
+ if (ACCESS_FLAG(F_DF)) /* down */
+ inc = -1;
+ else
+ inc = 1;
+ TRACE_AND_STEP();
+ count = 1;
+ if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
+ /* dont care whether REPE or REPNE */
+ /* move them until (E)CX is ZERO. */
+ count = (M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX;
+ M.x86.R_CX = 0;
+ if (M.x86.mode & SYSMODE_32BIT_REP)
+ M.x86.R_ECX = 0;
+ M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
+ }
+ while (count--) {
+ val = fetch_data_byte(M.x86.R_SI);
+ store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, val);
+ M.x86.R_SI += inc;
+ M.x86.R_DI += inc;
+ if (M.x86.intr & INTR_HALTED)
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xa5
+****************************************************************************/
+void x86emuOp_movs_word(u8 X86EMU_UNUSED(op1))
+{
+ u32 val;
+ int inc;
+ u32 count;
+
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("MOVS\tDWORD\n");
+ if (ACCESS_FLAG(F_DF)) /* down */
+ inc = -4;
+ else
+ inc = 4;
+ } else {
+ DECODE_PRINTF("MOVS\tWORD\n");
+ if (ACCESS_FLAG(F_DF)) /* down */
+ inc = -2;
+ else
+ inc = 2;
+ }
+ TRACE_AND_STEP();
+ count = 1;
+ if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
+ /* dont care whether REPE or REPNE */
+ /* move them until (E)CX is ZERO. */
+ count = (M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX;
+ M.x86.R_CX = 0;
+ if (M.x86.mode & SYSMODE_32BIT_REP)
+ M.x86.R_ECX = 0;
+ M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
+ }
+ while (count--) {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ val = fetch_data_long(M.x86.R_SI);
+ store_data_long_abs(M.x86.R_ES, M.x86.R_DI, val);
+ } else {
+ val = fetch_data_word(M.x86.R_SI);
+ store_data_word_abs(M.x86.R_ES, M.x86.R_DI, (u16)val);
+ }
+ M.x86.R_SI += inc;
+ M.x86.R_DI += inc;
+ if (M.x86.intr & INTR_HALTED)
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xa6
+****************************************************************************/
+void x86emuOp_cmps_byte(u8 X86EMU_UNUSED(op1))
+{
+ s8 val1, val2;
+ int inc;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("CMPS\tBYTE\n");
+ TRACE_AND_STEP();
+ if (ACCESS_FLAG(F_DF)) /* down */
+ inc = -1;
+ else
+ inc = 1;
+
+ if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
+ /* REPE */
+ /* move them until (E)CX is ZERO. */
+ while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) {
+ val1 = fetch_data_byte(M.x86.R_SI);
+ val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
+ cmp_byte(val1, val2);
+ if (M.x86.mode & SYSMODE_32BIT_REP)
+ M.x86.R_ECX -= 1;
+ else
+ M.x86.R_CX -= 1;
+ M.x86.R_SI += inc;
+ M.x86.R_DI += inc;
+ if ( (M.x86.mode & SYSMODE_PREFIX_REPE) && (ACCESS_FLAG(F_ZF) == 0) ) break;
+ if ( (M.x86.mode & SYSMODE_PREFIX_REPNE) && ACCESS_FLAG(F_ZF) ) break;
+ if (M.x86.intr & INTR_HALTED)
+ break;
+ }
+ M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
+ } else {
+ val1 = fetch_data_byte(M.x86.R_SI);
+ val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
+ cmp_byte(val1, val2);
+ M.x86.R_SI += inc;
+ M.x86.R_DI += inc;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xa7
+****************************************************************************/
+void x86emuOp_cmps_word(u8 X86EMU_UNUSED(op1))
+{
+ u32 val1,val2;
+ int inc;
+
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("CMPS\tDWORD\n");
+ inc = 4;
+ } else {
+ DECODE_PRINTF("CMPS\tWORD\n");
+ inc = 2;
+ }
+ if (ACCESS_FLAG(F_DF)) /* down */
+ inc = -inc;
+
+ TRACE_AND_STEP();
+ if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
+ /* REPE */
+ /* move them until (E)CX is ZERO. */
+ while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ val1 = fetch_data_long(M.x86.R_SI);
+ val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
+ cmp_long(val1, val2);
+ } else {
+ val1 = fetch_data_word(M.x86.R_SI);
+ val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
+ cmp_word((u16)val1, (u16)val2);
+ }
+ if (M.x86.mode & SYSMODE_32BIT_REP)
+ M.x86.R_ECX -= 1;
+ else
+ M.x86.R_CX -= 1;
+ M.x86.R_SI += inc;
+ M.x86.R_DI += inc;
+ if ( (M.x86.mode & SYSMODE_PREFIX_REPE) && ACCESS_FLAG(F_ZF) == 0 ) break;
+ if ( (M.x86.mode & SYSMODE_PREFIX_REPNE) && ACCESS_FLAG(F_ZF) ) break;
+ if (M.x86.intr & INTR_HALTED)
+ break;
+ }
+ M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
+ } else {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ val1 = fetch_data_long(M.x86.R_SI);
+ val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
+ cmp_long(val1, val2);
+ } else {
+ val1 = fetch_data_word(M.x86.R_SI);
+ val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
+ cmp_word((u16)val1, (u16)val2);
+ }
+ M.x86.R_SI += inc;
+ M.x86.R_DI += inc;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xa8
+****************************************************************************/
+void x86emuOp_test_AL_IMM(u8 X86EMU_UNUSED(op1))
+{
+ int imm;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("TEST\tAL,");
+ imm = fetch_byte_imm();
+ DECODE_PRINTF2("%04x\n", imm);
+ TRACE_AND_STEP();
+ test_byte(M.x86.R_AL, (u8)imm);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xa9
+****************************************************************************/
+void x86emuOp_test_AX_IMM(u8 X86EMU_UNUSED(op1))
+{
+ u32 srcval;
+
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("TEST\tEAX,");
+ srcval = fetch_long_imm();
+ } else {
+ DECODE_PRINTF("TEST\tAX,");
+ srcval = fetch_word_imm();
+ }
+ DECODE_PRINTF2("%x\n", srcval);
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ test_long(M.x86.R_EAX, srcval);
+ } else {
+ test_word(M.x86.R_AX, (u16)srcval);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xaa
+****************************************************************************/
+void x86emuOp_stos_byte(u8 X86EMU_UNUSED(op1))
+{
+ int inc;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("STOS\tBYTE\n");
+ if (ACCESS_FLAG(F_DF)) /* down */
+ inc = -1;
+ else
+ inc = 1;
+ TRACE_AND_STEP();
+ if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
+ /* dont care whether REPE or REPNE */
+ /* move them until (E)CX is ZERO. */
+ while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) {
+ store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL);
+ if (M.x86.mode & SYSMODE_32BIT_REP)
+ M.x86.R_ECX -= 1;
+ else
+ M.x86.R_CX -= 1;
+ M.x86.R_DI += inc;
+ if (M.x86.intr & INTR_HALTED)
+ break;
+ }
+ M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
+ } else {
+ store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL);
+ M.x86.R_DI += inc;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xab
+****************************************************************************/
+void x86emuOp_stos_word(u8 X86EMU_UNUSED(op1))
+{
+ int inc;
+ u32 count;
+
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("STOS\tDWORD\n");
+ if (ACCESS_FLAG(F_DF)) /* down */
+ inc = -4;
+ else
+ inc = 4;
+ } else {
+ DECODE_PRINTF("STOS\tWORD\n");
+ if (ACCESS_FLAG(F_DF)) /* down */
+ inc = -2;
+ else
+ inc = 2;
+ }
+ TRACE_AND_STEP();
+ count = 1;
+ if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
+ /* dont care whether REPE or REPNE */
+ /* move them until (E)CX is ZERO. */
+ count = (M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX;
+ M.x86.R_CX = 0;
+ if (M.x86.mode & SYSMODE_32BIT_REP)
+ M.x86.R_ECX = 0;
+ M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
+ }
+ while (count--) {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ store_data_long_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_EAX);
+ } else {
+ store_data_word_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AX);
+ }
+ M.x86.R_DI += inc;
+ if (M.x86.intr & INTR_HALTED)
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xac
+****************************************************************************/
+void x86emuOp_lods_byte(u8 X86EMU_UNUSED(op1))
+{
+ int inc;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("LODS\tBYTE\n");
+ TRACE_AND_STEP();
+ if (ACCESS_FLAG(F_DF)) /* down */
+ inc = -1;
+ else
+ inc = 1;
+ if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
+ /* dont care whether REPE or REPNE */
+ /* move them until (E)CX is ZERO. */
+ while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) {
+ M.x86.R_AL = fetch_data_byte(M.x86.R_SI);
+ if (M.x86.mode & SYSMODE_32BIT_REP)
+ M.x86.R_ECX -= 1;
+ else
+ M.x86.R_CX -= 1;
+ M.x86.R_SI += inc;
+ if (M.x86.intr & INTR_HALTED)
+ break;
+ }
+ M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
+ } else {
+ M.x86.R_AL = fetch_data_byte(M.x86.R_SI);
+ M.x86.R_SI += inc;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xad
+****************************************************************************/
+void x86emuOp_lods_word(u8 X86EMU_UNUSED(op1))
+{
+ int inc;
+ u32 count;
+
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("LODS\tDWORD\n");
+ if (ACCESS_FLAG(F_DF)) /* down */
+ inc = -4;
+ else
+ inc = 4;
+ } else {
+ DECODE_PRINTF("LODS\tWORD\n");
+ if (ACCESS_FLAG(F_DF)) /* down */
+ inc = -2;
+ else
+ inc = 2;
+ }
+ TRACE_AND_STEP();
+ count = 1;
+ if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
+ /* dont care whether REPE or REPNE */
+ /* move them until (E)CX is ZERO. */
+ count = (M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX;
+ M.x86.R_CX = 0;
+ if (M.x86.mode & SYSMODE_32BIT_REP)
+ M.x86.R_ECX = 0;
+ M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
+ }
+ while (count--) {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ M.x86.R_EAX = fetch_data_long(M.x86.R_SI);
+ } else {
+ M.x86.R_AX = fetch_data_word(M.x86.R_SI);
+ }
+ M.x86.R_SI += inc;
+ if (M.x86.intr & INTR_HALTED)
+ break;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xae
+****************************************************************************/
+void x86emuOp_scas_byte(u8 X86EMU_UNUSED(op1))
+{
+ s8 val2;
+ int inc;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("SCAS\tBYTE\n");
+ TRACE_AND_STEP();
+ if (ACCESS_FLAG(F_DF)) /* down */
+ inc = -1;
+ else
+ inc = 1;
+ if (M.x86.mode & SYSMODE_PREFIX_REPE) {
+ /* REPE */
+ /* move them until (E)CX is ZERO. */
+ while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) {
+ val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
+ cmp_byte(M.x86.R_AL, val2);
+ if (M.x86.mode & SYSMODE_32BIT_REP)
+ M.x86.R_ECX -= 1;
+ else
+ M.x86.R_CX -= 1;
+ M.x86.R_DI += inc;
+ if (ACCESS_FLAG(F_ZF) == 0)
+ break;
+ if (M.x86.intr & INTR_HALTED)
+ break;
+ }
+ M.x86.mode &= ~SYSMODE_PREFIX_REPE;
+ } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) {
+ /* REPNE */
+ /* move them until (E)CX is ZERO. */
+ while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) {
+ val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
+ cmp_byte(M.x86.R_AL, val2);
+ if (M.x86.mode & SYSMODE_32BIT_REP)
+ M.x86.R_ECX -= 1;
+ else
+ M.x86.R_CX -= 1;
+ M.x86.R_DI += inc;
+ if (ACCESS_FLAG(F_ZF))
+ break; /* zero flag set means equal */
+ if (M.x86.intr & INTR_HALTED)
+ break;
+ }
+ M.x86.mode &= ~SYSMODE_PREFIX_REPNE;
+ } else {
+ val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
+ cmp_byte(M.x86.R_AL, val2);
+ M.x86.R_DI += inc;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xaf
+****************************************************************************/
+void x86emuOp_scas_word(u8 X86EMU_UNUSED(op1))
+{
+ int inc;
+ u32 val;
+
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("SCAS\tDWORD\n");
+ if (ACCESS_FLAG(F_DF)) /* down */
+ inc = -4;
+ else
+ inc = 4;
+ } else {
+ DECODE_PRINTF("SCAS\tWORD\n");
+ if (ACCESS_FLAG(F_DF)) /* down */
+ inc = -2;
+ else
+ inc = 2;
+ }
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_REPE) {
+ /* REPE */
+ /* move them until (E)CX is ZERO. */
+ while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
+ cmp_long(M.x86.R_EAX, val);
+ } else {
+ val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
+ cmp_word(M.x86.R_AX, (u16)val);
+ }
+ if (M.x86.mode & SYSMODE_32BIT_REP)
+ M.x86.R_ECX -= 1;
+ else
+ M.x86.R_CX -= 1;
+ M.x86.R_DI += inc;
+ if (ACCESS_FLAG(F_ZF) == 0)
+ break;
+ if (M.x86.intr & INTR_HALTED)
+ break;
+ }
+ M.x86.mode &= ~SYSMODE_PREFIX_REPE;
+ } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) {
+ /* REPNE */
+ /* move them until (E)CX is ZERO. */
+ while (((M.x86.mode & SYSMODE_32BIT_REP) ? M.x86.R_ECX : M.x86.R_CX) != 0) {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
+ cmp_long(M.x86.R_EAX, val);
+ } else {
+ val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
+ cmp_word(M.x86.R_AX, (u16)val);
+ }
+ if (M.x86.mode & SYSMODE_32BIT_REP)
+ M.x86.R_ECX -= 1;
+ else
+ M.x86.R_CX -= 1;
+ M.x86.R_DI += inc;
+ if (ACCESS_FLAG(F_ZF))
+ break; /* zero flag set means equal */
+ if (M.x86.intr & INTR_HALTED)
+ break;
+ }
+ M.x86.mode &= ~SYSMODE_PREFIX_REPNE;
+ } else {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
+ cmp_long(M.x86.R_EAX, val);
+ } else {
+ val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
+ cmp_word(M.x86.R_AX, (u16)val);
+ }
+ M.x86.R_DI += inc;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xb0 - 0xb7
+****************************************************************************/
+void x86emuOp_mov_byte_register_IMM(u8 op1)
+{
+ u8 imm, *ptr;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOV\t");
+ ptr = DECODE_RM_BYTE_REGISTER(op1 & 0x7);
+ DECODE_PRINTF(",");
+ imm = fetch_byte_imm();
+ DECODE_PRINTF2("%x\n", imm);
+ TRACE_AND_STEP();
+ *ptr = imm;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xb8 - 0xbf
+****************************************************************************/
+void x86emuOp_mov_word_register_IMM(u8 X86EMU_UNUSED(op1))
+{
+ u32 srcval;
+
+ op1 &= 0x7;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOV\t");
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *reg32;
+ reg32 = DECODE_RM_LONG_REGISTER(op1);
+ srcval = fetch_long_imm();
+ DECODE_PRINTF2(",%x\n", srcval);
+ TRACE_AND_STEP();
+ *reg32 = srcval;
+ } else {
+ u16 *reg16;
+ reg16 = DECODE_RM_WORD_REGISTER(op1);
+ srcval = fetch_word_imm();
+ DECODE_PRINTF2(",%x\n", srcval);
+ TRACE_AND_STEP();
+ *reg16 = (u16)srcval;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xc0
+****************************************************************************/
+void x86emuOp_opcC0_byte_RM_MEM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ u8 *destreg;
+ uint destoffset;
+ u8 destval;
+ u8 amt;
+
+ /*
+ * Yet another weirdo special case instruction format. Part of
+ * the opcode held below in "RH". Doubly nested case would
+ * result, except that the decoded instruction
+ */
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+#ifdef CONFIG_DEBUG
+ if (DEBUG_DECODE()) {
+ /* XXX DECODE_PRINTF may be changed to something more
+ general, so that it is important to leave the strings
+ in the same format, even though the result is that the
+ above test is done twice. */
+
+ switch (rh) {
+ case 0:
+ DECODE_PRINTF("ROL\t");
+ break;
+ case 1:
+ DECODE_PRINTF("ROR\t");
+ break;
+ case 2:
+ DECODE_PRINTF("RCL\t");
+ break;
+ case 3:
+ DECODE_PRINTF("RCR\t");
+ break;
+ case 4:
+ DECODE_PRINTF("SHL\t");
+ break;
+ case 5:
+ DECODE_PRINTF("SHR\t");
+ break;
+ case 6:
+ DECODE_PRINTF("SAL\t");
+ break;
+ case 7:
+ DECODE_PRINTF("SAR\t");
+ break;
+ }
+ }
+#endif
+ /* know operation, decode the mod byte to find the addressing
+ mode. */
+ if (mod < 3) {
+ DECODE_PRINTF("BYTE PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ amt = fetch_byte_imm();
+ DECODE_PRINTF2(",%x\n", amt);
+ destval = fetch_data_byte(destoffset);
+ TRACE_AND_STEP();
+ destval = (*opcD0_byte_operation[rh]) (destval, amt);
+ store_data_byte(destoffset, destval);
+ } else { /* register to register */
+ destreg = DECODE_RM_BYTE_REGISTER(rl);
+ amt = fetch_byte_imm();
+ DECODE_PRINTF2(",%x\n", amt);
+ TRACE_AND_STEP();
+ destval = (*opcD0_byte_operation[rh]) (*destreg, amt);
+ *destreg = destval;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xc1
+****************************************************************************/
+void x86emuOp_opcC1_word_RM_MEM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+ u8 amt;
+
+ /*
+ * Yet another weirdo special case instruction format. Part of
+ * the opcode held below in "RH". Doubly nested case would
+ * result, except that the decoded instruction
+ */
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+#ifdef CONFIG_DEBUG
+ if (DEBUG_DECODE()) {
+ /* XXX DECODE_PRINTF may be changed to something more
+ general, so that it is important to leave the strings
+ in the same format, even though the result is that the
+ above test is done twice. */
+
+ switch (rh) {
+ case 0:
+ DECODE_PRINTF("ROL\t");
+ break;
+ case 1:
+ DECODE_PRINTF("ROR\t");
+ break;
+ case 2:
+ DECODE_PRINTF("RCL\t");
+ break;
+ case 3:
+ DECODE_PRINTF("RCR\t");
+ break;
+ case 4:
+ DECODE_PRINTF("SHL\t");
+ break;
+ case 5:
+ DECODE_PRINTF("SHR\t");
+ break;
+ case 6:
+ DECODE_PRINTF("SAL\t");
+ break;
+ case 7:
+ DECODE_PRINTF("SAR\t");
+ break;
+ }
+ }
+#endif
+ /* know operation, decode the mod byte to find the addressing
+ mode. */
+ if (mod < 3) {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+
+ DECODE_PRINTF("DWORD PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ amt = fetch_byte_imm();
+ DECODE_PRINTF2(",%x\n", amt);
+ destval = fetch_data_long(destoffset);
+ TRACE_AND_STEP();
+ destval = (*opcD1_long_operation[rh]) (destval, amt);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+
+ DECODE_PRINTF("WORD PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ amt = fetch_byte_imm();
+ DECODE_PRINTF2(",%x\n", amt);
+ destval = fetch_data_word(destoffset);
+ TRACE_AND_STEP();
+ destval = (*opcD1_word_operation[rh]) (destval, amt);
+ store_data_word(destoffset, destval);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ amt = fetch_byte_imm();
+ DECODE_PRINTF2(",%x\n", amt);
+ TRACE_AND_STEP();
+ *destreg = (*opcD1_long_operation[rh]) (*destreg, amt);
+ } else {
+ u16 *destreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ amt = fetch_byte_imm();
+ DECODE_PRINTF2(",%x\n", amt);
+ TRACE_AND_STEP();
+ *destreg = (*opcD1_word_operation[rh]) (*destreg, amt);
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xc2
+****************************************************************************/
+void x86emuOp_ret_near_IMM(u8 X86EMU_UNUSED(op1))
+{
+ u16 imm;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("RET\t");
+ imm = fetch_word_imm();
+ DECODE_PRINTF2("%x\n", imm);
+ TRACE_AND_STEP();
+ M.x86.R_IP = pop_word();
+ RETURN_TRACE(M.x86.saved_cs,M.x86.saved_ip, M.x86.R_CS, M.x86.R_IP, "NEAR");
+ M.x86.R_SP += imm;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xc3
+****************************************************************************/
+void x86emuOp_ret_near(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("RET\n");
+ TRACE_AND_STEP();
+ M.x86.R_IP = pop_word();
+ RETURN_TRACE(M.x86.saved_cs,M.x86.saved_ip, M.x86.R_CS, M.x86.R_IP, "NEAR");
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xc4
+****************************************************************************/
+void x86emuOp_les_R_IMM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rh, rl;
+ u16 *dstreg;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("LES\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *dstreg = fetch_data_word(srcoffset);
+ M.x86.R_ES = fetch_data_word(srcoffset + 2);
+ }
+ /* else UNDEFINED! register to register */
+
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xc5
+****************************************************************************/
+void x86emuOp_lds_R_IMM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rh, rl;
+ u16 *dstreg;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("LDS\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *dstreg = fetch_data_word(srcoffset);
+ M.x86.R_DS = fetch_data_word(srcoffset + 2);
+ }
+ /* else UNDEFINED! */
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xc6
+****************************************************************************/
+void x86emuOp_mov_byte_RM_IMM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ u8 *destreg;
+ uint destoffset;
+ u8 imm;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOV\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (rh != 0) {
+ DECODE_PRINTF("ILLEGAL DECODE OF OPCODE c6\n");
+ HALT_SYS();
+ }
+ if (mod < 3) {
+ DECODE_PRINTF("BYTE PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ imm = fetch_byte_imm();
+ DECODE_PRINTF2(",%2x\n", imm);
+ TRACE_AND_STEP();
+ store_data_byte(destoffset, imm);
+ } else { /* register to register */
+ destreg = DECODE_RM_BYTE_REGISTER(rl);
+ imm = fetch_byte_imm();
+ DECODE_PRINTF2(",%2x\n", imm);
+ TRACE_AND_STEP();
+ *destreg = imm;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xc7
+****************************************************************************/
+void x86emuOp_mov_word_RM_IMM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOV\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (rh != 0) {
+ DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n");
+ HALT_SYS();
+ }
+ if (mod < 3) {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 imm;
+
+ DECODE_PRINTF("DWORD PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ imm = fetch_long_imm();
+ DECODE_PRINTF2(",%x\n", imm);
+ TRACE_AND_STEP();
+ store_data_long(destoffset, imm);
+ } else {
+ u16 imm;
+
+ DECODE_PRINTF("WORD PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ imm = fetch_word_imm();
+ DECODE_PRINTF2(",%x\n", imm);
+ TRACE_AND_STEP();
+ store_data_word(destoffset, imm);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg;
+ u32 imm;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ imm = fetch_long_imm();
+ DECODE_PRINTF2(",%x\n", imm);
+ TRACE_AND_STEP();
+ *destreg = imm;
+ } else {
+ u16 *destreg;
+ u16 imm;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ imm = fetch_word_imm();
+ DECODE_PRINTF2(",%x\n", imm);
+ TRACE_AND_STEP();
+ *destreg = imm;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xc8
+****************************************************************************/
+void x86emuOp_enter(u8 X86EMU_UNUSED(op1))
+{
+ u16 local,frame_pointer;
+ u8 nesting;
+ int i;
+
+ START_OF_INSTR();
+ local = fetch_word_imm();
+ nesting = fetch_byte_imm();
+ DECODE_PRINTF2("ENTER %x\n", local);
+ DECODE_PRINTF2(",%x\n", nesting);
+ TRACE_AND_STEP();
+ push_word(M.x86.R_BP);
+ frame_pointer = M.x86.R_SP;
+ if (nesting > 0) {
+ for (i = 1; i < nesting; i++) {
+ M.x86.R_BP -= 2;
+ push_word(fetch_data_word_abs(M.x86.R_SS, M.x86.R_BP));
+ }
+ push_word(frame_pointer);
+ }
+ M.x86.R_BP = frame_pointer;
+ M.x86.R_SP = (u16)(M.x86.R_SP - local);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xc9
+****************************************************************************/
+void x86emuOp_leave(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("LEAVE\n");
+ TRACE_AND_STEP();
+ M.x86.R_SP = M.x86.R_BP;
+ M.x86.R_BP = pop_word();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xca
+****************************************************************************/
+void x86emuOp_ret_far_IMM(u8 X86EMU_UNUSED(op1))
+{
+ u16 imm;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("RETF\t");
+ imm = fetch_word_imm();
+ DECODE_PRINTF2("%x\n", imm);
+ TRACE_AND_STEP();
+ M.x86.R_IP = pop_word();
+ M.x86.R_CS = pop_word();
+ RETURN_TRACE(M.x86.saved_cs,M.x86.saved_ip, M.x86.R_CS, M.x86.R_IP, "FAR");
+ M.x86.R_SP += imm;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xcb
+****************************************************************************/
+void x86emuOp_ret_far(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("RETF\n");
+ TRACE_AND_STEP();
+ M.x86.R_IP = pop_word();
+ M.x86.R_CS = pop_word();
+ RETURN_TRACE(M.x86.saved_cs,M.x86.saved_ip, M.x86.R_CS, M.x86.R_IP, "FAR");
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xcc
+****************************************************************************/
+void x86emuOp_int3(u8 X86EMU_UNUSED(op1))
+{
+ u16 tmp;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("INT 3\n");
+ tmp = (u16) mem_access_word(3 * 4 + 2);
+ /* access the segment register */
+ TRACE_AND_STEP();
+ if (_X86EMU_intrTab[3]) {
+ (*_X86EMU_intrTab[3])(3);
+ } else {
+ push_word((u16)M.x86.R_FLG);
+ CLEAR_FLAG(F_IF);
+ CLEAR_FLAG(F_TF);
+ push_word(M.x86.R_CS);
+ M.x86.R_CS = mem_access_word(3 * 4 + 2);
+ push_word(M.x86.R_IP);
+ M.x86.R_IP = mem_access_word(3 * 4);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xcd
+****************************************************************************/
+void x86emuOp_int_IMM(u8 X86EMU_UNUSED(op1))
+{
+ u16 tmp;
+ u8 intnum;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("INT\t");
+ intnum = fetch_byte_imm();
+ DECODE_PRINTF2("%x\n", intnum);
+ tmp = mem_access_word(intnum * 4 + 2);
+ TRACE_AND_STEP();
+ if (_X86EMU_intrTab[intnum]) {
+ (*_X86EMU_intrTab[intnum])(intnum);
+ } else {
+ push_word((u16)M.x86.R_FLG);
+ CLEAR_FLAG(F_IF);
+ CLEAR_FLAG(F_TF);
+ push_word(M.x86.R_CS);
+ M.x86.R_CS = mem_access_word(intnum * 4 + 2);
+ push_word(M.x86.R_IP);
+ M.x86.R_IP = mem_access_word(intnum * 4);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xce
+****************************************************************************/
+void x86emuOp_into(u8 X86EMU_UNUSED(op1))
+{
+ u16 tmp;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("INTO\n");
+ TRACE_AND_STEP();
+ if (ACCESS_FLAG(F_OF)) {
+ tmp = mem_access_word(4 * 4 + 2);
+ if (_X86EMU_intrTab[4]) {
+ (*_X86EMU_intrTab[4])(4);
+ } else {
+ push_word((u16)M.x86.R_FLG);
+ CLEAR_FLAG(F_IF);
+ CLEAR_FLAG(F_TF);
+ push_word(M.x86.R_CS);
+ M.x86.R_CS = mem_access_word(4 * 4 + 2);
+ push_word(M.x86.R_IP);
+ M.x86.R_IP = mem_access_word(4 * 4);
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xcf
+****************************************************************************/
+void x86emuOp_iret(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("IRET\n");
+
+ TRACE_AND_STEP();
+
+ M.x86.R_IP = pop_word();
+ M.x86.R_CS = pop_word();
+ M.x86.R_FLG = pop_word();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xd0
+****************************************************************************/
+void x86emuOp_opcD0_byte_RM_1(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ u8 *destreg;
+ uint destoffset;
+ u8 destval;
+
+ /*
+ * Yet another weirdo special case instruction format. Part of
+ * the opcode held below in "RH". Doubly nested case would
+ * result, except that the decoded instruction
+ */
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+#ifdef CONFIG_DEBUG
+ if (DEBUG_DECODE()) {
+ /* XXX DECODE_PRINTF may be changed to something more
+ general, so that it is important to leave the strings
+ in the same format, even though the result is that the
+ above test is done twice. */
+ switch (rh) {
+ case 0:
+ DECODE_PRINTF("ROL\t");
+ break;
+ case 1:
+ DECODE_PRINTF("ROR\t");
+ break;
+ case 2:
+ DECODE_PRINTF("RCL\t");
+ break;
+ case 3:
+ DECODE_PRINTF("RCR\t");
+ break;
+ case 4:
+ DECODE_PRINTF("SHL\t");
+ break;
+ case 5:
+ DECODE_PRINTF("SHR\t");
+ break;
+ case 6:
+ DECODE_PRINTF("SAL\t");
+ break;
+ case 7:
+ DECODE_PRINTF("SAR\t");
+ break;
+ }
+ }
+#endif
+ /* know operation, decode the mod byte to find the addressing
+ mode. */
+ if (mod < 3) {
+ DECODE_PRINTF("BYTE PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",1\n");
+ destval = fetch_data_byte(destoffset);
+ TRACE_AND_STEP();
+ destval = (*opcD0_byte_operation[rh]) (destval, 1);
+ store_data_byte(destoffset, destval);
+ } else { /* register to register */
+ destreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF(",1\n");
+ TRACE_AND_STEP();
+ destval = (*opcD0_byte_operation[rh]) (*destreg, 1);
+ *destreg = destval;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xd1
+****************************************************************************/
+void x86emuOp_opcD1_word_RM_1(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+
+ /*
+ * Yet another weirdo special case instruction format. Part of
+ * the opcode held below in "RH". Doubly nested case would
+ * result, except that the decoded instruction
+ */
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+#ifdef CONFIG_DEBUG
+ if (DEBUG_DECODE()) {
+ /* XXX DECODE_PRINTF may be changed to something more
+ general, so that it is important to leave the strings
+ in the same format, even though the result is that the
+ above test is done twice. */
+ switch (rh) {
+ case 0:
+ DECODE_PRINTF("ROL\t");
+ break;
+ case 1:
+ DECODE_PRINTF("ROR\t");
+ break;
+ case 2:
+ DECODE_PRINTF("RCL\t");
+ break;
+ case 3:
+ DECODE_PRINTF("RCR\t");
+ break;
+ case 4:
+ DECODE_PRINTF("SHL\t");
+ break;
+ case 5:
+ DECODE_PRINTF("SHR\t");
+ break;
+ case 6:
+ DECODE_PRINTF("SAL\t");
+ break;
+ case 7:
+ DECODE_PRINTF("SAR\t");
+ break;
+ }
+ }
+#endif
+ /* know operation, decode the mod byte to find the addressing
+ mode. */
+ if (mod < 3) {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+
+ DECODE_PRINTF("DWORD PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",1\n");
+ destval = fetch_data_long(destoffset);
+ TRACE_AND_STEP();
+ destval = (*opcD1_long_operation[rh]) (destval, 1);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+
+ DECODE_PRINTF("WORD PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",1\n");
+ destval = fetch_data_word(destoffset);
+ TRACE_AND_STEP();
+ destval = (*opcD1_word_operation[rh]) (destval, 1);
+ store_data_word(destoffset, destval);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *destreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",1\n");
+ TRACE_AND_STEP();
+ destval = (*opcD1_long_operation[rh]) (*destreg, 1);
+ *destreg = destval;
+ } else {
+ u16 destval;
+ u16 *destreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",1\n");
+ TRACE_AND_STEP();
+ destval = (*opcD1_word_operation[rh]) (*destreg, 1);
+ *destreg = destval;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xd2
+****************************************************************************/
+void x86emuOp_opcD2_byte_RM_CL(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ u8 *destreg;
+ uint destoffset;
+ u8 destval;
+ u8 amt;
+
+ /*
+ * Yet another weirdo special case instruction format. Part of
+ * the opcode held below in "RH". Doubly nested case would
+ * result, except that the decoded instruction
+ */
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+#ifdef CONFIG_DEBUG
+ if (DEBUG_DECODE()) {
+ /* XXX DECODE_PRINTF may be changed to something more
+ general, so that it is important to leave the strings
+ in the same format, even though the result is that the
+ above test is done twice. */
+ switch (rh) {
+ case 0:
+ DECODE_PRINTF("ROL\t");
+ break;
+ case 1:
+ DECODE_PRINTF("ROR\t");
+ break;
+ case 2:
+ DECODE_PRINTF("RCL\t");
+ break;
+ case 3:
+ DECODE_PRINTF("RCR\t");
+ break;
+ case 4:
+ DECODE_PRINTF("SHL\t");
+ break;
+ case 5:
+ DECODE_PRINTF("SHR\t");
+ break;
+ case 6:
+ DECODE_PRINTF("SAL\t");
+ break;
+ case 7:
+ DECODE_PRINTF("SAR\t");
+ break;
+ }
+ }
+#endif
+ /* know operation, decode the mod byte to find the addressing
+ mode. */
+ amt = M.x86.R_CL;
+ if (mod < 3) {
+ DECODE_PRINTF("BYTE PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",CL\n");
+ destval = fetch_data_byte(destoffset);
+ TRACE_AND_STEP();
+ destval = (*opcD0_byte_operation[rh]) (destval, amt);
+ store_data_byte(destoffset, destval);
+ } else { /* register to register */
+ destreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = (*opcD0_byte_operation[rh]) (*destreg, amt);
+ *destreg = destval;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xd3
+****************************************************************************/
+void x86emuOp_opcD3_word_RM_CL(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+ u8 amt;
+
+ /*
+ * Yet another weirdo special case instruction format. Part of
+ * the opcode held below in "RH". Doubly nested case would
+ * result, except that the decoded instruction
+ */
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+#ifdef CONFIG_DEBUG
+ if (DEBUG_DECODE()) {
+ /* XXX DECODE_PRINTF may be changed to something more
+ general, so that it is important to leave the strings
+ in the same format, even though the result is that the
+ above test is done twice. */
+ switch (rh) {
+ case 0:
+ DECODE_PRINTF("ROL\t");
+ break;
+ case 1:
+ DECODE_PRINTF("ROR\t");
+ break;
+ case 2:
+ DECODE_PRINTF("RCL\t");
+ break;
+ case 3:
+ DECODE_PRINTF("RCR\t");
+ break;
+ case 4:
+ DECODE_PRINTF("SHL\t");
+ break;
+ case 5:
+ DECODE_PRINTF("SHR\t");
+ break;
+ case 6:
+ DECODE_PRINTF("SAL\t");
+ break;
+ case 7:
+ DECODE_PRINTF("SAR\t");
+ break;
+ }
+ }
+#endif
+ /* know operation, decode the mod byte to find the addressing
+ mode. */
+ amt = M.x86.R_CL;
+ if (mod < 3) {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+
+ DECODE_PRINTF("DWORD PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",CL\n");
+ destval = fetch_data_long(destoffset);
+ TRACE_AND_STEP();
+ destval = (*opcD1_long_operation[rh]) (destval, amt);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+
+ DECODE_PRINTF("WORD PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",CL\n");
+ destval = fetch_data_word(destoffset);
+ TRACE_AND_STEP();
+ destval = (*opcD1_word_operation[rh]) (destval, amt);
+ store_data_word(destoffset, destval);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ *destreg = (*opcD1_long_operation[rh]) (*destreg, amt);
+ } else {
+ u16 *destreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ *destreg = (*opcD1_word_operation[rh]) (*destreg, amt);
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xd4
+****************************************************************************/
+void x86emuOp_aam(u8 X86EMU_UNUSED(op1))
+{
+ u8 a;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("AAM\n");
+ a = fetch_byte_imm(); /* this is a stupid encoding. */
+ if (a != 10) {
+ DECODE_PRINTF("ERROR DECODING AAM\n");
+ TRACE_REGS();
+ HALT_SYS();
+ }
+ TRACE_AND_STEP();
+ /* note the type change here --- returning AL and AH in AX. */
+ M.x86.R_AX = aam_word(M.x86.R_AL);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xd5
+****************************************************************************/
+void x86emuOp_aad(u8 X86EMU_UNUSED(op1))
+{
+ u8 a;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("AAD\n");
+ a = fetch_byte_imm();
+ TRACE_AND_STEP();
+ M.x86.R_AX = aad_word(M.x86.R_AX);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/* opcode 0xd6 ILLEGAL OPCODE */
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xd7
+****************************************************************************/
+void x86emuOp_xlat(u8 X86EMU_UNUSED(op1))
+{
+ u16 addr;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("XLAT\n");
+ TRACE_AND_STEP();
+ addr = (u16)(M.x86.R_BX + (u8)M.x86.R_AL);
+ M.x86.R_AL = fetch_data_byte(addr);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/* instuctions D8 .. DF are in i87_ops.c */
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xe0
+****************************************************************************/
+void x86emuOp_loopne(u8 X86EMU_UNUSED(op1))
+{
+ s16 ip;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("LOOPNE\t");
+ ip = (s8) fetch_byte_imm();
+ ip += (s16) M.x86.R_IP;
+ DECODE_PRINTF2("%04x\n", ip);
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_ADDR)
+ M.x86.R_ECX -= 1;
+ else
+ M.x86.R_CX -= 1;
+ if (((M.x86.mode & SYSMODE_PREFIX_ADDR) ? M.x86.R_ECX : M.x86.R_CX) != 0 && !ACCESS_FLAG(F_ZF)) /* (E)CX != 0 and !ZF */
+ M.x86.R_IP = ip;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xe1
+****************************************************************************/
+void x86emuOp_loope(u8 X86EMU_UNUSED(op1))
+{
+ s16 ip;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("LOOPE\t");
+ ip = (s8) fetch_byte_imm();
+ ip += (s16) M.x86.R_IP;
+ DECODE_PRINTF2("%04x\n", ip);
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_ADDR)
+ M.x86.R_ECX -= 1;
+ else
+ M.x86.R_CX -= 1;
+ if (((M.x86.mode & SYSMODE_PREFIX_ADDR) ? M.x86.R_ECX : M.x86.R_CX) != 0 && ACCESS_FLAG(F_ZF)) /* (E)CX != 0 and ZF */
+ M.x86.R_IP = ip;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xe2
+****************************************************************************/
+void x86emuOp_loop(u8 X86EMU_UNUSED(op1))
+{
+ s16 ip;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("LOOP\t");
+ ip = (s8) fetch_byte_imm();
+ ip += (s16) M.x86.R_IP;
+ DECODE_PRINTF2("%04x\n", ip);
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_ADDR)
+ M.x86.R_ECX -= 1;
+ else
+ M.x86.R_CX -= 1;
+ if (((M.x86.mode & SYSMODE_PREFIX_ADDR) ? M.x86.R_ECX : M.x86.R_CX) != 0) /* (E)CX != 0 */
+ M.x86.R_IP = ip;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xe3
+****************************************************************************/
+void x86emuOp_jcxz(u8 X86EMU_UNUSED(op1))
+{
+ u16 target;
+ s8 offset;
+
+ /* jump to byte offset if overflow flag is set */
+ START_OF_INSTR();
+ DECODE_PRINTF("JCXZ\t");
+ offset = (s8)fetch_byte_imm();
+ target = (u16)(M.x86.R_IP + offset);
+ DECODE_PRINTF2("%x\n", target);
+ TRACE_AND_STEP();
+ if (M.x86.R_CX == 0) {
+ M.x86.R_IP = target;
+ JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, M.x86.R_IP, " CXZ ");
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xe4
+****************************************************************************/
+void x86emuOp_in_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
+{
+ u8 port;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("IN\t");
+ port = (u8) fetch_byte_imm();
+ DECODE_PRINTF2("%x,AL\n", port);
+ TRACE_AND_STEP();
+ M.x86.R_AL = (*sys_inb)(port);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xe5
+****************************************************************************/
+void x86emuOp_in_word_AX_IMM(u8 X86EMU_UNUSED(op1))
+{
+ u8 port;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("IN\t");
+ port = (u8) fetch_byte_imm();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF2("EAX,%x\n", port);
+ } else {
+ DECODE_PRINTF2("AX,%x\n", port);
+ }
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ M.x86.R_EAX = (*sys_inl)(port);
+ } else {
+ M.x86.R_AX = (*sys_inw)(port);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xe6
+****************************************************************************/
+void x86emuOp_out_byte_IMM_AL(u8 X86EMU_UNUSED(op1))
+{
+ u8 port;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("OUT\t");
+ port = (u8) fetch_byte_imm();
+ DECODE_PRINTF2("%x,AL\n", port);
+ TRACE_AND_STEP();
+ (*sys_outb)(port, M.x86.R_AL);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xe7
+****************************************************************************/
+void x86emuOp_out_word_IMM_AX(u8 X86EMU_UNUSED(op1))
+{
+ u8 port;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("OUT\t");
+ port = (u8) fetch_byte_imm();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF2("%x,EAX\n", port);
+ } else {
+ DECODE_PRINTF2("%x,AX\n", port);
+ }
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ (*sys_outl)(port, M.x86.R_EAX);
+ } else {
+ (*sys_outw)(port, M.x86.R_AX);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xe8
+****************************************************************************/
+void x86emuOp_call_near_IMM(u8 X86EMU_UNUSED(op1))
+{
+ s16 ip;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("CALL\t");
+ ip = (s16) fetch_word_imm();
+ ip += (s16) M.x86.R_IP; /* CHECK SIGN */
+ DECODE_PRINTF2("%04x\n", ip);
+ CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip, "");
+ TRACE_AND_STEP();
+ push_word(M.x86.R_IP);
+ M.x86.R_IP = ip;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xe9
+****************************************************************************/
+void x86emuOp_jump_near_IMM(u8 X86EMU_UNUSED(op1))
+{
+ int ip;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("JMP\t");
+ ip = (s16)fetch_word_imm();
+ ip += (s16)M.x86.R_IP;
+ DECODE_PRINTF2("%04x\n", ip);
+ JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip, " NEAR ");
+ TRACE_AND_STEP();
+ M.x86.R_IP = (u16)ip;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xea
+****************************************************************************/
+void x86emuOp_jump_far_IMM(u8 X86EMU_UNUSED(op1))
+{
+ u16 cs, ip;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("JMP\tFAR ");
+ ip = fetch_word_imm();
+ cs = fetch_word_imm();
+ DECODE_PRINTF2("%04x:", cs);
+ DECODE_PRINTF2("%04x\n", ip);
+ JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, cs, ip, " FAR ");
+ TRACE_AND_STEP();
+ M.x86.R_IP = ip;
+ M.x86.R_CS = cs;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xeb
+****************************************************************************/
+void x86emuOp_jump_byte_IMM(u8 X86EMU_UNUSED(op1))
+{
+ u16 target;
+ s8 offset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("JMP\t");
+ offset = (s8)fetch_byte_imm();
+ target = (u16)(M.x86.R_IP + offset);
+ DECODE_PRINTF2("%x\n", target);
+ JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, target, " BYTE ");
+ TRACE_AND_STEP();
+ M.x86.R_IP = target;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xec
+****************************************************************************/
+void x86emuOp_in_byte_AL_DX(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("IN\tAL,DX\n");
+ TRACE_AND_STEP();
+ M.x86.R_AL = (*sys_inb)(M.x86.R_DX);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xed
+****************************************************************************/
+void x86emuOp_in_word_AX_DX(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("IN\tEAX,DX\n");
+ } else {
+ DECODE_PRINTF("IN\tAX,DX\n");
+ }
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ M.x86.R_EAX = (*sys_inl)(M.x86.R_DX);
+ } else {
+ M.x86.R_AX = (*sys_inw)(M.x86.R_DX);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xee
+****************************************************************************/
+void x86emuOp_out_byte_DX_AL(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("OUT\tDX,AL\n");
+ TRACE_AND_STEP();
+ (*sys_outb)(M.x86.R_DX, M.x86.R_AL);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xef
+****************************************************************************/
+void x86emuOp_out_word_DX_AX(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("OUT\tDX,EAX\n");
+ } else {
+ DECODE_PRINTF("OUT\tDX,AX\n");
+ }
+ TRACE_AND_STEP();
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ (*sys_outl)(M.x86.R_DX, M.x86.R_EAX);
+ } else {
+ (*sys_outw)(M.x86.R_DX, M.x86.R_AX);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xf0
+****************************************************************************/
+void x86emuOp_lock(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("LOCK:\n");
+ TRACE_AND_STEP();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/*opcode 0xf1 ILLEGAL OPERATION */
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xf2
+****************************************************************************/
+void x86emuOp_repne(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("REPNE\n");
+ TRACE_AND_STEP();
+ M.x86.mode |= SYSMODE_PREFIX_REPNE;
+ if (M.x86.mode & SYSMODE_PREFIX_ADDR)
+ M.x86.mode |= SYSMODE_32BIT_REP;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xf3
+****************************************************************************/
+void x86emuOp_repe(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("REPE\n");
+ TRACE_AND_STEP();
+ M.x86.mode |= SYSMODE_PREFIX_REPE;
+ if (M.x86.mode & SYSMODE_PREFIX_ADDR)
+ M.x86.mode |= SYSMODE_32BIT_REP;
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xf4
+****************************************************************************/
+void x86emuOp_halt(u8 X86EMU_UNUSED(op1))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("HALT\n");
+ TRACE_AND_STEP();
+ HALT_SYS();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xf5
+****************************************************************************/
+void x86emuOp_cmc(u8 X86EMU_UNUSED(op1))
+{
+ /* complement the carry flag. */
+ START_OF_INSTR();
+ DECODE_PRINTF("CMC\n");
+ TRACE_AND_STEP();
+ TOGGLE_FLAG(F_CF);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xf6
+****************************************************************************/
+void x86emuOp_opcF6_byte_RM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ u8 *destreg;
+ uint destoffset;
+ u8 destval, srcval;
+
+ /* long, drawn out code follows. Double switch for a total
+ of 32 cases. */
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ DECODE_PRINTF(opF6_names[rh]);
+ if (mod < 3) {
+ DECODE_PRINTF("BYTE PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ destval = fetch_data_byte(destoffset);
+
+ switch (rh) {
+ case 0: /* test byte imm */
+ DECODE_PRINTF(",");
+ srcval = fetch_byte_imm();
+ DECODE_PRINTF2("%02x\n", srcval);
+ TRACE_AND_STEP();
+ test_byte(destval, srcval);
+ break;
+ case 1:
+ DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n");
+ HALT_SYS();
+ break;
+ case 2:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ destval = not_byte(destval);
+ store_data_byte(destoffset, destval);
+ break;
+ case 3:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ destval = neg_byte(destval);
+ store_data_byte(destoffset, destval);
+ break;
+ case 4:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ mul_byte(destval);
+ break;
+ case 5:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ imul_byte(destval);
+ break;
+ case 6:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ div_byte(destval);
+ break;
+ default:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ idiv_byte(destval);
+ break;
+ }
+ } else { /* mod=11 */
+ destreg = DECODE_RM_BYTE_REGISTER(rl);
+ switch (rh) {
+ case 0: /* test byte imm */
+ DECODE_PRINTF(",");
+ srcval = fetch_byte_imm();
+ DECODE_PRINTF2("%02x\n", srcval);
+ TRACE_AND_STEP();
+ test_byte(*destreg, srcval);
+ break;
+ case 1:
+ DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n");
+ HALT_SYS();
+ break;
+ case 2:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = not_byte(*destreg);
+ break;
+ case 3:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = neg_byte(*destreg);
+ break;
+ case 4:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ mul_byte(*destreg); /*!!! */
+ break;
+ case 5:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ imul_byte(*destreg);
+ break;
+ case 6:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ div_byte(*destreg);
+ break;
+ default:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ idiv_byte(*destreg);
+ break;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xf7
+****************************************************************************/
+void x86emuOp_opcF7_word_RM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rl, rh;
+ uint destoffset;
+
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ DECODE_PRINTF(opF6_names[rh]);
+ if (mod < 3) {
+
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval, srcval;
+
+ DECODE_PRINTF("DWORD PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ destval = fetch_data_long(destoffset);
+
+ switch (rh) {
+ case 0:
+ DECODE_PRINTF(",");
+ srcval = fetch_long_imm();
+ DECODE_PRINTF2("%x\n", srcval);
+ TRACE_AND_STEP();
+ test_long(destval, srcval);
+ break;
+ case 1:
+ DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F7\n");
+ HALT_SYS();
+ break;
+ case 2:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ destval = not_long(destval);
+ store_data_long(destoffset, destval);
+ break;
+ case 3:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ destval = neg_long(destval);
+ store_data_long(destoffset, destval);
+ break;
+ case 4:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ mul_long(destval);
+ break;
+ case 5:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ imul_long(destval);
+ break;
+ case 6:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ div_long(destval);
+ break;
+ case 7:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ idiv_long(destval);
+ break;
+ }
+ } else {
+ u16 destval, srcval;
+
+ DECODE_PRINTF("WORD PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ destval = fetch_data_word(destoffset);
+
+ switch (rh) {
+ case 0: /* test word imm */
+ DECODE_PRINTF(",");
+ srcval = fetch_word_imm();
+ DECODE_PRINTF2("%x\n", srcval);
+ TRACE_AND_STEP();
+ test_word(destval, srcval);
+ break;
+ case 1:
+ DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F7\n");
+ HALT_SYS();
+ break;
+ case 2:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ destval = not_word(destval);
+ store_data_word(destoffset, destval);
+ break;
+ case 3:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ destval = neg_word(destval);
+ store_data_word(destoffset, destval);
+ break;
+ case 4:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ mul_word(destval);
+ break;
+ case 5:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ imul_word(destval);
+ break;
+ case 6:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ div_word(destval);
+ break;
+ case 7:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ idiv_word(destval);
+ break;
+ }
+ }
+
+ } else { /* mod=11 */
+
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg;
+ u32 srcval;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+
+ switch (rh) {
+ case 0: /* test word imm */
+ DECODE_PRINTF(",");
+ srcval = fetch_long_imm();
+ DECODE_PRINTF2("%x\n", srcval);
+ TRACE_AND_STEP();
+ test_long(*destreg, srcval);
+ break;
+ case 1:
+ DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n");
+ HALT_SYS();
+ break;
+ case 2:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = not_long(*destreg);
+ break;
+ case 3:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = neg_long(*destreg);
+ break;
+ case 4:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ mul_long(*destreg); /*!!! */
+ break;
+ case 5:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ imul_long(*destreg);
+ break;
+ case 6:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ div_long(*destreg);
+ break;
+ case 7:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ idiv_long(*destreg);
+ break;
+ }
+ } else {
+ u16 *destreg;
+ u16 srcval;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+
+ switch (rh) {
+ case 0: /* test word imm */
+ DECODE_PRINTF(",");
+ srcval = fetch_word_imm();
+ DECODE_PRINTF2("%x\n", srcval);
+ TRACE_AND_STEP();
+ test_word(*destreg, srcval);
+ break;
+ case 1:
+ DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n");
+ HALT_SYS();
+ break;
+ case 2:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = not_word(*destreg);
+ break;
+ case 3:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = neg_word(*destreg);
+ break;
+ case 4:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ mul_word(*destreg); /*!!! */
+ break;
+ case 5:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ imul_word(*destreg);
+ break;
+ case 6:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ div_word(*destreg);
+ break;
+ case 7:
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ idiv_word(*destreg);
+ break;
+ }
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xf8
+****************************************************************************/
+void x86emuOp_clc(u8 X86EMU_UNUSED(op1))
+{
+ /* clear the carry flag. */
+ START_OF_INSTR();
+ DECODE_PRINTF("CLC\n");
+ TRACE_AND_STEP();
+ CLEAR_FLAG(F_CF);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xf9
+****************************************************************************/
+void x86emuOp_stc(u8 X86EMU_UNUSED(op1))
+{
+ /* set the carry flag. */
+ START_OF_INSTR();
+ DECODE_PRINTF("STC\n");
+ TRACE_AND_STEP();
+ SET_FLAG(F_CF);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xfa
+****************************************************************************/
+void x86emuOp_cli(u8 X86EMU_UNUSED(op1))
+{
+ /* clear interrupts. */
+ START_OF_INSTR();
+ DECODE_PRINTF("CLI\n");
+ TRACE_AND_STEP();
+ CLEAR_FLAG(F_IF);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xfb
+****************************************************************************/
+void x86emuOp_sti(u8 X86EMU_UNUSED(op1))
+{
+ /* enable interrupts. */
+ START_OF_INSTR();
+ DECODE_PRINTF("STI\n");
+ TRACE_AND_STEP();
+ SET_FLAG(F_IF);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xfc
+****************************************************************************/
+void x86emuOp_cld(u8 X86EMU_UNUSED(op1))
+{
+ /* clear interrupts. */
+ START_OF_INSTR();
+ DECODE_PRINTF("CLD\n");
+ TRACE_AND_STEP();
+ CLEAR_FLAG(F_DF);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xfd
+****************************************************************************/
+void x86emuOp_std(u8 X86EMU_UNUSED(op1))
+{
+ /* clear interrupts. */
+ START_OF_INSTR();
+ DECODE_PRINTF("STD\n");
+ TRACE_AND_STEP();
+ SET_FLAG(F_DF);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xfe
+****************************************************************************/
+void x86emuOp_opcFE_byte_RM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rh, rl;
+ u8 destval;
+ uint destoffset;
+ u8 *destreg;
+
+ /* Yet another special case instruction. */
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+#ifdef CONFIG_DEBUG
+ if (DEBUG_DECODE()) {
+ /* XXX DECODE_PRINTF may be changed to something more
+ general, so that it is important to leave the strings
+ in the same format, even though the result is that the
+ above test is done twice. */
+
+ switch (rh) {
+ case 0:
+ DECODE_PRINTF("INC\t");
+ break;
+ case 1:
+ DECODE_PRINTF("DEC\t");
+ break;
+ case 2:
+ case 3:
+ case 4:
+ case 5:
+ case 6:
+ case 7:
+ DECODE_PRINTF2("ILLEGAL OP MAJOR OP 0xFE MINOR OP %x \n", mod);
+ HALT_SYS();
+ break;
+ }
+ }
+#endif
+ if (mod < 3) {
+ DECODE_PRINTF("BYTE PTR ");
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF("\n");
+ destval = fetch_data_byte(destoffset);
+ TRACE_AND_STEP();
+ if (rh == 0)
+ destval = inc_byte(destval);
+ else
+ destval = dec_byte(destval);
+ store_data_byte(destoffset, destval);
+ } else {
+ destreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ if (rh == 0)
+ *destreg = inc_byte(*destreg);
+ else
+ *destreg = dec_byte(*destreg);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0xff
+****************************************************************************/
+void x86emuOp_opcFF_word_RM(u8 X86EMU_UNUSED(op1))
+{
+ int mod, rh, rl;
+ uint destoffset = 0;
+ u16 *destreg;
+ u32 *destreg32;
+ u16 destval,destval2;
+ u32 destval32;
+
+ /* Yet another special case instruction. */
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+#ifdef CONFIG_DEBUG
+ if (DEBUG_DECODE()) {
+ /* XXX DECODE_PRINTF may be changed to something more
+ general, so that it is important to leave the strings
+ in the same format, even though the result is that the
+ above test is done twice. */
+
+ switch (rh) {
+ case 0:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("INC\tDWORD PTR ");
+ } else {
+ DECODE_PRINTF("INC\tWORD PTR ");
+ }
+ break;
+ case 1:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ DECODE_PRINTF("DEC\tDWORD PTR ");
+ } else {
+ DECODE_PRINTF("DEC\tWORD PTR ");
+ }
+ break;
+ case 2:
+ DECODE_PRINTF("CALL\t ");
+ break;
+ case 3:
+ DECODE_PRINTF("CALL\tFAR ");
+ break;
+ case 4:
+ DECODE_PRINTF("JMP\t");
+ break;
+ case 5:
+ DECODE_PRINTF("JMP\tFAR ");
+ break;
+ case 6:
+ DECODE_PRINTF("PUSH\t");
+ break;
+ case 7:
+ DECODE_PRINTF("ILLEGAL DECODING OF OPCODE FF\t");
+ HALT_SYS();
+ break;
+ }
+ }
+#endif
+ if (mod < 3) {
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF("\n");
+ switch (rh) {
+ case 0: /* inc word ptr ... */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ destval32 = fetch_data_long(destoffset);
+ TRACE_AND_STEP();
+ destval32 = inc_long(destval32);
+ store_data_long(destoffset, destval32);
+ } else {
+ destval = fetch_data_word(destoffset);
+ TRACE_AND_STEP();
+ destval = inc_word(destval);
+ store_data_word(destoffset, destval);
+ }
+ break;
+ case 1: /* dec word ptr ... */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ destval32 = fetch_data_long(destoffset);
+ TRACE_AND_STEP();
+ destval32 = dec_long(destval32);
+ store_data_long(destoffset, destval32);
+ } else {
+ destval = fetch_data_word(destoffset);
+ TRACE_AND_STEP();
+ destval = dec_word(destval);
+ store_data_word(destoffset, destval);
+ }
+ break;
+ case 2: /* call word ptr ... */
+ destval = fetch_data_word(destoffset);
+ TRACE_AND_STEP();
+ push_word(M.x86.R_IP);
+ M.x86.R_IP = destval;
+ break;
+ case 3: /* call far ptr ... */
+ destval = fetch_data_word(destoffset);
+ destval2 = fetch_data_word(destoffset + 2);
+ TRACE_AND_STEP();
+ push_word(M.x86.R_CS);
+ M.x86.R_CS = destval2;
+ push_word(M.x86.R_IP);
+ M.x86.R_IP = destval;
+ break;
+ case 4: /* jmp word ptr ... */
+ destval = fetch_data_word(destoffset);
+ JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, destval, " WORD ");
+ TRACE_AND_STEP();
+ M.x86.R_IP = destval;
+ break;
+ case 5: /* jmp far ptr ... */
+ destval = fetch_data_word(destoffset);
+ destval2 = fetch_data_word(destoffset + 2);
+ JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, destval2, destval, " FAR ");
+ TRACE_AND_STEP();
+ M.x86.R_IP = destval;
+ M.x86.R_CS = destval2;
+ break;
+ case 6: /* push word ptr ... */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ destval32 = fetch_data_long(destoffset);
+ TRACE_AND_STEP();
+ push_long(destval32);
+ } else {
+ destval = fetch_data_word(destoffset);
+ TRACE_AND_STEP();
+ push_word(destval);
+ }
+ break;
+ }
+ } else {
+ switch (rh) {
+ case 0:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ destreg32 = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg32 = inc_long(*destreg32);
+ } else {
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = inc_word(*destreg);
+ }
+ break;
+ case 1:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ destreg32 = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg32 = dec_long(*destreg32);
+ } else {
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = dec_word(*destreg);
+ }
+ break;
+ case 2: /* call word ptr ... */
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ push_word(M.x86.R_IP);
+ M.x86.R_IP = *destreg;
+ break;
+ case 3: /* jmp far ptr ... */
+ DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n");
+ TRACE_AND_STEP();
+ HALT_SYS();
+ break;
+
+ case 4: /* jmp ... */
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ M.x86.R_IP = (u16) (*destreg);
+ break;
+ case 5: /* jmp far ptr ... */
+ DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n");
+ TRACE_AND_STEP();
+ HALT_SYS();
+ break;
+ case 6:
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ destreg32 = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ push_long(*destreg32);
+ } else {
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ push_word(*destreg);
+ }
+ break;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/***************************************************************************
+ * Single byte operation code table:
+ **************************************************************************/
+void (*x86emu_optab[256])(u8) =
+{
+/* 0x00 */ x86emuOp_genop_byte_RM_R,
+/* 0x01 */ x86emuOp_genop_word_RM_R,
+/* 0x02 */ x86emuOp_genop_byte_R_RM,
+/* 0x03 */ x86emuOp_genop_word_R_RM,
+/* 0x04 */ x86emuOp_genop_byte_AL_IMM,
+/* 0x05 */ x86emuOp_genop_word_AX_IMM,
+/* 0x06 */ x86emuOp_push_ES,
+/* 0x07 */ x86emuOp_pop_ES,
+
+/* 0x08 */ x86emuOp_genop_byte_RM_R,
+/* 0x09 */ x86emuOp_genop_word_RM_R,
+/* 0x0a */ x86emuOp_genop_byte_R_RM,
+/* 0x0b */ x86emuOp_genop_word_R_RM,
+/* 0x0c */ x86emuOp_genop_byte_AL_IMM,
+/* 0x0d */ x86emuOp_genop_word_AX_IMM,
+/* 0x0e */ x86emuOp_push_CS,
+/* 0x0f */ x86emuOp_two_byte,
+
+/* 0x10 */ x86emuOp_genop_byte_RM_R,
+/* 0x11 */ x86emuOp_genop_word_RM_R,
+/* 0x12 */ x86emuOp_genop_byte_R_RM,
+/* 0x13 */ x86emuOp_genop_word_R_RM,
+/* 0x14 */ x86emuOp_genop_byte_AL_IMM,
+/* 0x15 */ x86emuOp_genop_word_AX_IMM,
+/* 0x16 */ x86emuOp_push_SS,
+/* 0x17 */ x86emuOp_pop_SS,
+
+/* 0x18 */ x86emuOp_genop_byte_RM_R,
+/* 0x19 */ x86emuOp_genop_word_RM_R,
+/* 0x1a */ x86emuOp_genop_byte_R_RM,
+/* 0x1b */ x86emuOp_genop_word_R_RM,
+/* 0x1c */ x86emuOp_genop_byte_AL_IMM,
+/* 0x1d */ x86emuOp_genop_word_AX_IMM,
+/* 0x1e */ x86emuOp_push_DS,
+/* 0x1f */ x86emuOp_pop_DS,
+
+/* 0x20 */ x86emuOp_genop_byte_RM_R,
+/* 0x21 */ x86emuOp_genop_word_RM_R,
+/* 0x22 */ x86emuOp_genop_byte_R_RM,
+/* 0x23 */ x86emuOp_genop_word_R_RM,
+/* 0x24 */ x86emuOp_genop_byte_AL_IMM,
+/* 0x25 */ x86emuOp_genop_word_AX_IMM,
+/* 0x26 */ x86emuOp_segovr_ES,
+/* 0x27 */ x86emuOp_daa,
+
+/* 0x28 */ x86emuOp_genop_byte_RM_R,
+/* 0x29 */ x86emuOp_genop_word_RM_R,
+/* 0x2a */ x86emuOp_genop_byte_R_RM,
+/* 0x2b */ x86emuOp_genop_word_R_RM,
+/* 0x2c */ x86emuOp_genop_byte_AL_IMM,
+/* 0x2d */ x86emuOp_genop_word_AX_IMM,
+/* 0x2e */ x86emuOp_segovr_CS,
+/* 0x2f */ x86emuOp_das,
+
+/* 0x30 */ x86emuOp_genop_byte_RM_R,
+/* 0x31 */ x86emuOp_genop_word_RM_R,
+/* 0x32 */ x86emuOp_genop_byte_R_RM,
+/* 0x33 */ x86emuOp_genop_word_R_RM,
+/* 0x34 */ x86emuOp_genop_byte_AL_IMM,
+/* 0x35 */ x86emuOp_genop_word_AX_IMM,
+/* 0x36 */ x86emuOp_segovr_SS,
+/* 0x37 */ x86emuOp_aaa,
+
+/* 0x38 */ x86emuOp_genop_byte_RM_R,
+/* 0x39 */ x86emuOp_genop_word_RM_R,
+/* 0x3a */ x86emuOp_genop_byte_R_RM,
+/* 0x3b */ x86emuOp_genop_word_R_RM,
+/* 0x3c */ x86emuOp_genop_byte_AL_IMM,
+/* 0x3d */ x86emuOp_genop_word_AX_IMM,
+/* 0x3e */ x86emuOp_segovr_DS,
+/* 0x3f */ x86emuOp_aas,
+
+/* 0x40 */ x86emuOp_inc_register,
+/* 0x41 */ x86emuOp_inc_register,
+/* 0x42 */ x86emuOp_inc_register,
+/* 0x43 */ x86emuOp_inc_register,
+/* 0x44 */ x86emuOp_inc_register,
+/* 0x45 */ x86emuOp_inc_register,
+/* 0x46 */ x86emuOp_inc_register,
+/* 0x47 */ x86emuOp_inc_register,
+
+/* 0x48 */ x86emuOp_dec_register,
+/* 0x49 */ x86emuOp_dec_register,
+/* 0x4a */ x86emuOp_dec_register,
+/* 0x4b */ x86emuOp_dec_register,
+/* 0x4c */ x86emuOp_dec_register,
+/* 0x4d */ x86emuOp_dec_register,
+/* 0x4e */ x86emuOp_dec_register,
+/* 0x4f */ x86emuOp_dec_register,
+
+/* 0x50 */ x86emuOp_push_register,
+/* 0x51 */ x86emuOp_push_register,
+/* 0x52 */ x86emuOp_push_register,
+/* 0x53 */ x86emuOp_push_register,
+/* 0x54 */ x86emuOp_push_register,
+/* 0x55 */ x86emuOp_push_register,
+/* 0x56 */ x86emuOp_push_register,
+/* 0x57 */ x86emuOp_push_register,
+
+/* 0x58 */ x86emuOp_pop_register,
+/* 0x59 */ x86emuOp_pop_register,
+/* 0x5a */ x86emuOp_pop_register,
+/* 0x5b */ x86emuOp_pop_register,
+/* 0x5c */ x86emuOp_pop_register,
+/* 0x5d */ x86emuOp_pop_register,
+/* 0x5e */ x86emuOp_pop_register,
+/* 0x5f */ x86emuOp_pop_register,
+
+/* 0x60 */ x86emuOp_push_all,
+/* 0x61 */ x86emuOp_pop_all,
+/* 0x62 */ x86emuOp_illegal_op, /* bound */
+/* 0x63 */ x86emuOp_illegal_op, /* arpl */
+/* 0x64 */ x86emuOp_segovr_FS,
+/* 0x65 */ x86emuOp_segovr_GS,
+/* 0x66 */ x86emuOp_prefix_data,
+/* 0x67 */ x86emuOp_prefix_addr,
+
+/* 0x68 */ x86emuOp_push_word_IMM,
+/* 0x69 */ x86emuOp_imul_word_IMM,
+/* 0x6a */ x86emuOp_push_byte_IMM,
+/* 0x6b */ x86emuOp_imul_byte_IMM,
+/* 0x6c */ x86emuOp_ins_byte,
+/* 0x6d */ x86emuOp_ins_word,
+/* 0x6e */ x86emuOp_outs_byte,
+/* 0x6f */ x86emuOp_outs_word,
+
+/* 0x70 */ x86emuOp_jump_near_cond,
+/* 0x71 */ x86emuOp_jump_near_cond,
+/* 0x72 */ x86emuOp_jump_near_cond,
+/* 0x73 */ x86emuOp_jump_near_cond,
+/* 0x74 */ x86emuOp_jump_near_cond,
+/* 0x75 */ x86emuOp_jump_near_cond,
+/* 0x76 */ x86emuOp_jump_near_cond,
+/* 0x77 */ x86emuOp_jump_near_cond,
+
+/* 0x78 */ x86emuOp_jump_near_cond,
+/* 0x79 */ x86emuOp_jump_near_cond,
+/* 0x7a */ x86emuOp_jump_near_cond,
+/* 0x7b */ x86emuOp_jump_near_cond,
+/* 0x7c */ x86emuOp_jump_near_cond,
+/* 0x7d */ x86emuOp_jump_near_cond,
+/* 0x7e */ x86emuOp_jump_near_cond,
+/* 0x7f */ x86emuOp_jump_near_cond,
+
+/* 0x80 */ x86emuOp_opc80_byte_RM_IMM,
+/* 0x81 */ x86emuOp_opc81_word_RM_IMM,
+/* 0x82 */ x86emuOp_opc82_byte_RM_IMM,
+/* 0x83 */ x86emuOp_opc83_word_RM_IMM,
+/* 0x84 */ x86emuOp_test_byte_RM_R,
+/* 0x85 */ x86emuOp_test_word_RM_R,
+/* 0x86 */ x86emuOp_xchg_byte_RM_R,
+/* 0x87 */ x86emuOp_xchg_word_RM_R,
+
+/* 0x88 */ x86emuOp_mov_byte_RM_R,
+/* 0x89 */ x86emuOp_mov_word_RM_R,
+/* 0x8a */ x86emuOp_mov_byte_R_RM,
+/* 0x8b */ x86emuOp_mov_word_R_RM,
+/* 0x8c */ x86emuOp_mov_word_RM_SR,
+/* 0x8d */ x86emuOp_lea_word_R_M,
+/* 0x8e */ x86emuOp_mov_word_SR_RM,
+/* 0x8f */ x86emuOp_pop_RM,
+
+/* 0x90 */ x86emuOp_nop,
+/* 0x91 */ x86emuOp_xchg_word_AX_register,
+/* 0x92 */ x86emuOp_xchg_word_AX_register,
+/* 0x93 */ x86emuOp_xchg_word_AX_register,
+/* 0x94 */ x86emuOp_xchg_word_AX_register,
+/* 0x95 */ x86emuOp_xchg_word_AX_register,
+/* 0x96 */ x86emuOp_xchg_word_AX_register,
+/* 0x97 */ x86emuOp_xchg_word_AX_register,
+
+/* 0x98 */ x86emuOp_cbw,
+/* 0x99 */ x86emuOp_cwd,
+/* 0x9a */ x86emuOp_call_far_IMM,
+/* 0x9b */ x86emuOp_wait,
+/* 0x9c */ x86emuOp_pushf_word,
+/* 0x9d */ x86emuOp_popf_word,
+/* 0x9e */ x86emuOp_sahf,
+/* 0x9f */ x86emuOp_lahf,
+
+/* 0xa0 */ x86emuOp_mov_AL_M_IMM,
+/* 0xa1 */ x86emuOp_mov_AX_M_IMM,
+/* 0xa2 */ x86emuOp_mov_M_AL_IMM,
+/* 0xa3 */ x86emuOp_mov_M_AX_IMM,
+/* 0xa4 */ x86emuOp_movs_byte,
+/* 0xa5 */ x86emuOp_movs_word,
+/* 0xa6 */ x86emuOp_cmps_byte,
+/* 0xa7 */ x86emuOp_cmps_word,
+/* 0xa8 */ x86emuOp_test_AL_IMM,
+/* 0xa9 */ x86emuOp_test_AX_IMM,
+/* 0xaa */ x86emuOp_stos_byte,
+/* 0xab */ x86emuOp_stos_word,
+/* 0xac */ x86emuOp_lods_byte,
+/* 0xad */ x86emuOp_lods_word,
+/* 0xac */ x86emuOp_scas_byte,
+/* 0xad */ x86emuOp_scas_word,
+
+/* 0xb0 */ x86emuOp_mov_byte_register_IMM,
+/* 0xb1 */ x86emuOp_mov_byte_register_IMM,
+/* 0xb2 */ x86emuOp_mov_byte_register_IMM,
+/* 0xb3 */ x86emuOp_mov_byte_register_IMM,
+/* 0xb4 */ x86emuOp_mov_byte_register_IMM,
+/* 0xb5 */ x86emuOp_mov_byte_register_IMM,
+/* 0xb6 */ x86emuOp_mov_byte_register_IMM,
+/* 0xb7 */ x86emuOp_mov_byte_register_IMM,
+
+/* 0xb8 */ x86emuOp_mov_word_register_IMM,
+/* 0xb9 */ x86emuOp_mov_word_register_IMM,
+/* 0xba */ x86emuOp_mov_word_register_IMM,
+/* 0xbb */ x86emuOp_mov_word_register_IMM,
+/* 0xbc */ x86emuOp_mov_word_register_IMM,
+/* 0xbd */ x86emuOp_mov_word_register_IMM,
+/* 0xbe */ x86emuOp_mov_word_register_IMM,
+/* 0xbf */ x86emuOp_mov_word_register_IMM,
+
+/* 0xc0 */ x86emuOp_opcC0_byte_RM_MEM,
+/* 0xc1 */ x86emuOp_opcC1_word_RM_MEM,
+/* 0xc2 */ x86emuOp_ret_near_IMM,
+/* 0xc3 */ x86emuOp_ret_near,
+/* 0xc4 */ x86emuOp_les_R_IMM,
+/* 0xc5 */ x86emuOp_lds_R_IMM,
+/* 0xc6 */ x86emuOp_mov_byte_RM_IMM,
+/* 0xc7 */ x86emuOp_mov_word_RM_IMM,
+/* 0xc8 */ x86emuOp_enter,
+/* 0xc9 */ x86emuOp_leave,
+/* 0xca */ x86emuOp_ret_far_IMM,
+/* 0xcb */ x86emuOp_ret_far,
+/* 0xcc */ x86emuOp_int3,
+/* 0xcd */ x86emuOp_int_IMM,
+/* 0xce */ x86emuOp_into,
+/* 0xcf */ x86emuOp_iret,
+
+/* 0xd0 */ x86emuOp_opcD0_byte_RM_1,
+/* 0xd1 */ x86emuOp_opcD1_word_RM_1,
+/* 0xd2 */ x86emuOp_opcD2_byte_RM_CL,
+/* 0xd3 */ x86emuOp_opcD3_word_RM_CL,
+/* 0xd4 */ x86emuOp_aam,
+/* 0xd5 */ x86emuOp_aad,
+/* 0xd6 */ x86emuOp_illegal_op, /* Undocumented SETALC instruction */
+/* 0xd7 */ x86emuOp_xlat,
+/* 0xd8 */ x86emuOp_esc_coprocess_d8,
+/* 0xd9 */ x86emuOp_esc_coprocess_d9,
+/* 0xda */ x86emuOp_esc_coprocess_da,
+/* 0xdb */ x86emuOp_esc_coprocess_db,
+/* 0xdc */ x86emuOp_esc_coprocess_dc,
+/* 0xdd */ x86emuOp_esc_coprocess_dd,
+/* 0xde */ x86emuOp_esc_coprocess_de,
+/* 0xdf */ x86emuOp_esc_coprocess_df,
+
+/* 0xe0 */ x86emuOp_loopne,
+/* 0xe1 */ x86emuOp_loope,
+/* 0xe2 */ x86emuOp_loop,
+/* 0xe3 */ x86emuOp_jcxz,
+/* 0xe4 */ x86emuOp_in_byte_AL_IMM,
+/* 0xe5 */ x86emuOp_in_word_AX_IMM,
+/* 0xe6 */ x86emuOp_out_byte_IMM_AL,
+/* 0xe7 */ x86emuOp_out_word_IMM_AX,
+
+/* 0xe8 */ x86emuOp_call_near_IMM,
+/* 0xe9 */ x86emuOp_jump_near_IMM,
+/* 0xea */ x86emuOp_jump_far_IMM,
+/* 0xeb */ x86emuOp_jump_byte_IMM,
+/* 0xec */ x86emuOp_in_byte_AL_DX,
+/* 0xed */ x86emuOp_in_word_AX_DX,
+/* 0xee */ x86emuOp_out_byte_DX_AL,
+/* 0xef */ x86emuOp_out_word_DX_AX,
+
+/* 0xf0 */ x86emuOp_lock,
+/* 0xf1 */ x86emuOp_illegal_op,
+/* 0xf2 */ x86emuOp_repne,
+/* 0xf3 */ x86emuOp_repe,
+/* 0xf4 */ x86emuOp_halt,
+/* 0xf5 */ x86emuOp_cmc,
+/* 0xf6 */ x86emuOp_opcF6_byte_RM,
+/* 0xf7 */ x86emuOp_opcF7_word_RM,
+
+/* 0xf8 */ x86emuOp_clc,
+/* 0xf9 */ x86emuOp_stc,
+/* 0xfa */ x86emuOp_cli,
+/* 0xfb */ x86emuOp_sti,
+/* 0xfc */ x86emuOp_cld,
+/* 0xfd */ x86emuOp_std,
+/* 0xfe */ x86emuOp_opcFE_byte_RM,
+/* 0xff */ x86emuOp_opcFF_word_RM,
+};
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1996-1999 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: Header file for operand decoding functions.
+*
+****************************************************************************/
+
+#ifndef __X86EMU_OPS_H
+#define __X86EMU_OPS_H
+
+extern void (*x86emu_optab[0x100])(u8 op1);
+extern void (*x86emu_optab2[0x100])(u8 op2);
+
+#endif /* __X86EMU_OPS_H */
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1991-2004 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: This file includes subroutines to implement the decoding
+* and emulation of all the x86 extended two-byte processor
+* instructions.
+*
+****************************************************************************/
+
+#include "x86emui.h"
+
+/*----------------------------- Implementation ----------------------------*/
+
+/****************************************************************************
+PARAMETERS:
+op1 - Instruction op code
+
+REMARKS:
+Handles illegal opcodes.
+****************************************************************************/
+void x86emuOp2_illegal_op(
+ u8 op2)
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n");
+ TRACE_REGS();
+ printk("%04x:%04x: %02X ILLEGAL EXTENDED X86 OPCODE!\n",
+ M.x86.R_CS, M.x86.R_IP-2,op2);
+ HALT_SYS();
+ END_OF_INSTR();
+}
+
+#define xorl(a,b) (((a) && !(b)) || (!(a) && (b)))
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0x80-0x8F
+****************************************************************************/
+int x86emu_check_jump_condition(u8 op)
+{
+ switch (op) {
+ case 0x0:
+ DECODE_PRINTF("JO\t");
+ return ACCESS_FLAG(F_OF);
+ case 0x1:
+ DECODE_PRINTF("JNO\t");
+ return !ACCESS_FLAG(F_OF);
+ break;
+ case 0x2:
+ DECODE_PRINTF("JB\t");
+ return ACCESS_FLAG(F_CF);
+ break;
+ case 0x3:
+ DECODE_PRINTF("JNB\t");
+ return !ACCESS_FLAG(F_CF);
+ break;
+ case 0x4:
+ DECODE_PRINTF("JZ\t");
+ return ACCESS_FLAG(F_ZF);
+ break;
+ case 0x5:
+ DECODE_PRINTF("JNZ\t");
+ return !ACCESS_FLAG(F_ZF);
+ break;
+ case 0x6:
+ DECODE_PRINTF("JBE\t");
+ return ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF);
+ break;
+ case 0x7:
+ DECODE_PRINTF("JNBE\t");
+ return !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF));
+ break;
+ case 0x8:
+ DECODE_PRINTF("JS\t");
+ return ACCESS_FLAG(F_SF);
+ break;
+ case 0x9:
+ DECODE_PRINTF("JNS\t");
+ return !ACCESS_FLAG(F_SF);
+ break;
+ case 0xa:
+ DECODE_PRINTF("JP\t");
+ return ACCESS_FLAG(F_PF);
+ break;
+ case 0xb:
+ DECODE_PRINTF("JNP\t");
+ return !ACCESS_FLAG(F_PF);
+ break;
+ case 0xc:
+ DECODE_PRINTF("JL\t");
+ return xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF));
+ break;
+ case 0xd:
+ DECODE_PRINTF("JNL\t");
+ return !xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF));
+ break;
+ case 0xe:
+ DECODE_PRINTF("JLE\t");
+ return (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
+ ACCESS_FLAG(F_ZF));
+ break;
+ default:
+ DECODE_PRINTF("JNLE\t");
+ return !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
+ ACCESS_FLAG(F_ZF));
+ }
+}
+
+void x86emuOp2_long_jump(u8 op2)
+{
+ s32 target;
+ int cond;
+
+ /* conditional jump to word offset. */
+ START_OF_INSTR();
+ cond = x86emu_check_jump_condition(op2 & 0xF);
+ target = (s16) fetch_word_imm();
+ target += (s16) M.x86.R_IP;
+ DECODE_PRINTF2("%04x\n", target);
+ TRACE_AND_STEP();
+ if (cond) {
+ M.x86.R_IP = (u16)target;
+ JMP_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, M.x86.R_IP, " LONG COND ");
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xC8-0xCF
+****************************************************************************/
+s32 x86emu_bswap(s32 reg)
+{
+ // perform the byte swap
+ s32 temp = reg;
+ reg = (temp & 0xFF000000) >> 24;
+ reg |= (temp & 0xFF0000) >> 8;
+ reg |= (temp & 0xFF00) << 8;
+ reg |= (temp & 0xFF) << 24;
+ return reg;
+}
+
+void x86emuOp2_bswap(u8 op2)
+{
+ /* byte swap 32 bit register */
+ START_OF_INSTR();
+ DECODE_PRINTF("BSWAP\t");
+ switch (op2) {
+ case 0xc8:
+ DECODE_PRINTF("EAX\n");
+ M.x86.R_EAX = x86emu_bswap(M.x86.R_EAX);
+ break;
+ case 0xc9:
+ DECODE_PRINTF("ECX\n");
+ M.x86.R_ECX = x86emu_bswap(M.x86.R_ECX);
+ break;
+ case 0xca:
+ DECODE_PRINTF("EDX\n");
+ M.x86.R_EDX = x86emu_bswap(M.x86.R_EDX);
+ break;
+ case 0xcb:
+ DECODE_PRINTF("EBX\n");
+ M.x86.R_EBX = x86emu_bswap(M.x86.R_EBX);
+ break;
+ case 0xcc:
+ DECODE_PRINTF("ESP\n");
+ M.x86.R_ESP = x86emu_bswap(M.x86.R_ESP);
+ break;
+ case 0xcd:
+ DECODE_PRINTF("EBP\n");
+ M.x86.R_EBP = x86emu_bswap(M.x86.R_EBP);
+ break;
+ case 0xce:
+ DECODE_PRINTF("ESI\n");
+ M.x86.R_ESI = x86emu_bswap(M.x86.R_ESI);
+ break;
+ case 0xcf:
+ DECODE_PRINTF("EDI\n");
+ M.x86.R_EDI = x86emu_bswap(M.x86.R_EDI);
+ break;
+ }
+ TRACE_AND_STEP();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0x90-0x9F
+****************************************************************************/
+void x86emuOp2_set_byte(u8 op2)
+{
+ int mod, rl, rh;
+ uint destoffset;
+ u8 *destreg;
+ char *name = 0;
+ int cond = 0;
+
+ START_OF_INSTR();
+ switch (op2) {
+ case 0x90:
+ name = "SETO\t";
+ cond = ACCESS_FLAG(F_OF);
+ break;
+ case 0x91:
+ name = "SETNO\t";
+ cond = !ACCESS_FLAG(F_OF);
+ break;
+ case 0x92:
+ name = "SETB\t";
+ cond = ACCESS_FLAG(F_CF);
+ break;
+ case 0x93:
+ name = "SETNB\t";
+ cond = !ACCESS_FLAG(F_CF);
+ break;
+ case 0x94:
+ name = "SETZ\t";
+ cond = ACCESS_FLAG(F_ZF);
+ break;
+ case 0x95:
+ name = "SETNZ\t";
+ cond = !ACCESS_FLAG(F_ZF);
+ break;
+ case 0x96:
+ name = "SETBE\t";
+ cond = ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF);
+ break;
+ case 0x97:
+ name = "SETNBE\t";
+ cond = !(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF));
+ break;
+ case 0x98:
+ name = "SETS\t";
+ cond = ACCESS_FLAG(F_SF);
+ break;
+ case 0x99:
+ name = "SETNS\t";
+ cond = !ACCESS_FLAG(F_SF);
+ break;
+ case 0x9a:
+ name = "SETP\t";
+ cond = ACCESS_FLAG(F_PF);
+ break;
+ case 0x9b:
+ name = "SETNP\t";
+ cond = !ACCESS_FLAG(F_PF);
+ break;
+ case 0x9c:
+ name = "SETL\t";
+ cond = xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF));
+ break;
+ case 0x9d:
+ name = "SETNL\t";
+ cond = !xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF));
+ break;
+ case 0x9e:
+ name = "SETLE\t";
+ cond = (xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
+ ACCESS_FLAG(F_ZF));
+ break;
+ case 0x9f:
+ name = "SETNLE\t";
+ cond = !(xorl(ACCESS_FLAG(F_SF), ACCESS_FLAG(F_OF)) ||
+ ACCESS_FLAG(F_ZF));
+ break;
+ }
+ DECODE_PRINTF(name);
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destoffset = decode_rmXX_address(mod, rl);
+ TRACE_AND_STEP();
+ store_data_byte(destoffset, cond ? 0x01 : 0x00);
+ } else { /* register to register */
+ destreg = DECODE_RM_BYTE_REGISTER(rl);
+ TRACE_AND_STEP();
+ *destreg = cond ? 0x01 : 0x00;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xa0
+****************************************************************************/
+void x86emuOp2_push_FS(u8 X86EMU_UNUSED(op2))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("PUSH\tFS\n");
+ TRACE_AND_STEP();
+ push_word(M.x86.R_FS);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xa1
+****************************************************************************/
+void x86emuOp2_pop_FS(u8 X86EMU_UNUSED(op2))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("POP\tFS\n");
+ TRACE_AND_STEP();
+ M.x86.R_FS = pop_word();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xa3
+****************************************************************************/
+void x86emuOp2_bt_R(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ int bit,disp;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("BT\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ srcoffset = decode_rmXX_address(mod, rl);
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval;
+ u32 *shiftreg;
+
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF);
+ } else {
+ u16 srcval;
+ u16 *shiftreg;
+
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ CONDITIONAL_SET_FLAG(srcval & (0x1 << bit),F_CF);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *srcreg,*shiftreg;
+
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit),F_CF);
+ } else {
+ u16 *srcreg,*shiftreg;
+
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ CONDITIONAL_SET_FLAG(*srcreg & (0x1 << bit),F_CF);
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xa4
+****************************************************************************/
+void x86emuOp2_shld_IMM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint destoffset;
+ u8 shift;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("SHLD\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destoffset = decode_rmXX_address(mod, rl);
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shld_long(destval,*shiftreg,shift);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shld_word(destval,*shiftreg,shift);
+ store_data_word(destoffset, destval);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ *destreg = shld_long(*destreg,*shiftreg,shift);
+ } else {
+ u16 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ *destreg = shld_word(*destreg,*shiftreg,shift);
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xa5
+****************************************************************************/
+void x86emuOp2_shld_CL(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint destoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("SHLD\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destoffset = decode_rmXX_address(mod, rl);
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shld_long(destval,*shiftreg,M.x86.R_CL);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shld_word(destval,*shiftreg,M.x86.R_CL);
+ store_data_word(destoffset, destval);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ *destreg = shld_long(*destreg,*shiftreg,M.x86.R_CL);
+ } else {
+ u16 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ *destreg = shld_word(*destreg,*shiftreg,M.x86.R_CL);
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xa8
+****************************************************************************/
+void x86emuOp2_push_GS(u8 X86EMU_UNUSED(op2))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("PUSH\tGS\n");
+ TRACE_AND_STEP();
+ push_word(M.x86.R_GS);
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xa9
+****************************************************************************/
+void x86emuOp2_pop_GS(u8 X86EMU_UNUSED(op2))
+{
+ START_OF_INSTR();
+ DECODE_PRINTF("POP\tGS\n");
+ TRACE_AND_STEP();
+ M.x86.R_GS = pop_word();
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xaa
+****************************************************************************/
+void x86emuOp2_bts_R(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ int bit,disp;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("BTS\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ srcoffset = decode_rmXX_address(mod, rl);
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval,mask;
+ u32 *shiftreg;
+
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_long(srcoffset+disp, srcval | mask);
+ } else {
+ u16 srcval,mask;
+ u16 *shiftreg;
+
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_word(srcoffset+disp, srcval | mask);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *srcreg,*shiftreg;
+ u32 mask;
+
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ *srcreg |= mask;
+ } else {
+ u16 *srcreg,*shiftreg;
+ u16 mask;
+
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ *srcreg |= mask;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xac
+****************************************************************************/
+void x86emuOp2_shrd_IMM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint destoffset;
+ u8 shift;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("SHLD\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destoffset = decode_rmXX_address(mod, rl);
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shrd_long(destval,*shiftreg,shift);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shrd_word(destval,*shiftreg,shift);
+ store_data_word(destoffset, destval);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ *destreg = shrd_long(*destreg,*shiftreg,shift);
+ } else {
+ u16 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2("%d\n", shift);
+ TRACE_AND_STEP();
+ *destreg = shrd_word(*destreg,*shiftreg,shift);
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xad
+****************************************************************************/
+void x86emuOp2_shrd_CL(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint destoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("SHLD\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",");
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 destval;
+ u32 *shiftreg;
+
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_long(destoffset);
+ destval = shrd_long(destval,*shiftreg,M.x86.R_CL);
+ store_data_long(destoffset, destval);
+ } else {
+ u16 destval;
+ u16 *shiftreg;
+
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ destval = fetch_data_word(destoffset);
+ destval = shrd_word(destval,*shiftreg,M.x86.R_CL);
+ store_data_word(destoffset, destval);
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ *destreg = shrd_long(*destreg,*shiftreg,M.x86.R_CL);
+ } else {
+ u16 *destreg,*shiftreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",CL\n");
+ TRACE_AND_STEP();
+ *destreg = shrd_word(*destreg,*shiftreg,M.x86.R_CL);
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xaf
+****************************************************************************/
+void x86emuOp2_imul_R_RM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("IMUL\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg;
+ u32 srcval;
+ u32 res_lo,res_hi;
+
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ srcval = fetch_data_long(srcoffset);
+ TRACE_AND_STEP();
+ imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)srcval);
+ if (res_hi != 0) {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ } else {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ }
+ *destreg = (u32)res_lo;
+ } else {
+ u16 *destreg;
+ u16 srcval;
+ u32 res;
+
+ destreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ srcval = fetch_data_word(srcoffset);
+ TRACE_AND_STEP();
+ res = (s16)*destreg * (s16)srcval;
+ if (res > 0xFFFF) {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ } else {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ }
+ *destreg = (u16)res;
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg,*srcreg;
+ u32 res_lo,res_hi;
+
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ TRACE_AND_STEP();
+ imul_long_direct(&res_lo,&res_hi,(s32)*destreg,(s32)*srcreg);
+ if (res_hi != 0) {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ } else {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ }
+ *destreg = (u32)res_lo;
+ } else {
+ u16 *destreg,*srcreg;
+ u32 res;
+
+ destreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ res = (s16)*destreg * (s16)*srcreg;
+ if (res > 0xFFFF) {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ } else {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ }
+ *destreg = (u16)res;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xb2
+****************************************************************************/
+void x86emuOp2_lss_R_IMM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rh, rl;
+ u16 *dstreg;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("LSS\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *dstreg = fetch_data_word(srcoffset);
+ M.x86.R_SS = fetch_data_word(srcoffset + 2);
+ } else { /* register to register */
+ /* UNDEFINED! */
+ TRACE_AND_STEP();
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xb3
+****************************************************************************/
+void x86emuOp2_btr_R(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ int bit,disp;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("BTR\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ srcoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",");
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval,mask;
+ u32 *shiftreg;
+
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_long(srcoffset+disp, srcval & ~mask);
+ } else {
+ u16 srcval,mask;
+ u16 *shiftreg;
+
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_word(srcoffset+disp, (u16)(srcval & ~mask));
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *srcreg,*shiftreg;
+ u32 mask;
+
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ *srcreg &= ~mask;
+ } else {
+ u16 *srcreg,*shiftreg;
+ u16 mask;
+
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ *srcreg &= ~mask;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xb4
+****************************************************************************/
+void x86emuOp2_lfs_R_IMM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rh, rl;
+ u16 *dstreg;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("LFS\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *dstreg = fetch_data_word(srcoffset);
+ M.x86.R_FS = fetch_data_word(srcoffset + 2);
+ } else { /* register to register */
+ /* UNDEFINED! */
+ TRACE_AND_STEP();
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xb5
+****************************************************************************/
+void x86emuOp2_lgs_R_IMM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rh, rl;
+ u16 *dstreg;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("LGS\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *dstreg = fetch_data_word(srcoffset);
+ M.x86.R_GS = fetch_data_word(srcoffset + 2);
+ } else { /* register to register */
+ /* UNDEFINED! */
+ TRACE_AND_STEP();
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xb6
+****************************************************************************/
+void x86emuOp2_movzx_byte_R_RM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOVZX\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg;
+ u32 srcval;
+
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ srcval = fetch_data_byte(srcoffset);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = srcval;
+ } else {
+ u16 *destreg;
+ u16 srcval;
+
+ destreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ srcval = fetch_data_byte(srcoffset);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = srcval;
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg;
+ u8 *srcreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = *srcreg;
+ } else {
+ u16 *destreg;
+ u8 *srcreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = *srcreg;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xb7
+****************************************************************************/
+void x86emuOp2_movzx_word_R_RM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ u32 *destreg;
+ u32 srcval;
+ u16 *srcreg;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOVZX\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ srcval = fetch_data_word(srcoffset);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = srcval;
+ } else { /* register to register */
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = *srcreg;
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xba
+****************************************************************************/
+void x86emuOp2_btX_I(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ u8 shift;
+ int bit;
+
+ START_OF_INSTR();
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ switch (rh) {
+ case 4:
+ DECODE_PRINTF("BT\t");
+ break;
+ case 5:
+ DECODE_PRINTF("BTS\t");
+ break;
+ case 6:
+ DECODE_PRINTF("BTR\t");
+ break;
+ case 7:
+ DECODE_PRINTF("BTC\t");
+ break;
+ default:
+ DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE\n");
+ TRACE_REGS();
+ printk("%04x:%04x: %02X%02X ILLEGAL EXTENDED X86 OPCODE EXTENSION!\n",
+ M.x86.R_CS, M.x86.R_IP-3,op2, (mod<<6)|(rh<<3)|rl);
+ HALT_SYS();
+ }
+ if (mod < 3) {
+
+ srcoffset = decode_rmXX_address(mod, rl);
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2(",%d\n", shift);
+ TRACE_AND_STEP();
+
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval, mask;
+
+ bit = shift & 0x1F;
+ srcval = fetch_data_long(srcoffset);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ switch (rh) {
+ case 5:
+ store_data_long(srcoffset, srcval | mask);
+ break;
+ case 6:
+ store_data_long(srcoffset, srcval & ~mask);
+ break;
+ case 7:
+ store_data_long(srcoffset, srcval ^ mask);
+ break;
+ default:
+ break;
+ }
+ } else {
+ u16 srcval, mask;
+
+ bit = shift & 0xF;
+ srcval = fetch_data_word(srcoffset);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ switch (rh) {
+ case 5:
+ store_data_word(srcoffset, srcval | mask);
+ break;
+ case 6:
+ store_data_word(srcoffset, srcval & ~mask);
+ break;
+ case 7:
+ store_data_word(srcoffset, srcval ^ mask);
+ break;
+ default:
+ break;
+ }
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *srcreg;
+ u32 mask;
+
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2(",%d\n", shift);
+ TRACE_AND_STEP();
+ bit = shift & 0x1F;
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ switch (rh) {
+ case 5:
+ *srcreg |= mask;
+ break;
+ case 6:
+ *srcreg &= ~mask;
+ break;
+ case 7:
+ *srcreg ^= mask;
+ break;
+ default:
+ break;
+ }
+ } else {
+ u16 *srcreg;
+ u16 mask;
+
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ shift = fetch_byte_imm();
+ DECODE_PRINTF2(",%d\n", shift);
+ TRACE_AND_STEP();
+ bit = shift & 0xF;
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ switch (rh) {
+ case 5:
+ *srcreg |= mask;
+ break;
+ case 6:
+ *srcreg &= ~mask;
+ break;
+ case 7:
+ *srcreg ^= mask;
+ break;
+ default:
+ break;
+ }
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xbb
+****************************************************************************/
+void x86emuOp2_btc_R(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ int bit,disp;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("BTC\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ srcoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",");
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval,mask;
+ u32 *shiftreg;
+
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ disp = (s16)*shiftreg >> 5;
+ srcval = fetch_data_long(srcoffset+disp);
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_long(srcoffset+disp, srcval ^ mask);
+ } else {
+ u16 srcval,mask;
+ u16 *shiftreg;
+
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ disp = (s16)*shiftreg >> 4;
+ srcval = fetch_data_word(srcoffset+disp);
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(srcval & mask,F_CF);
+ store_data_word(srcoffset+disp, (u16)(srcval ^ mask));
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *srcreg,*shiftreg;
+ u32 mask;
+
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0x1F;
+ mask = (0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ *srcreg ^= mask;
+ } else {
+ u16 *srcreg,*shiftreg;
+ u16 mask;
+
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ shiftreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ bit = *shiftreg & 0xF;
+ mask = (u16)(0x1 << bit);
+ CONDITIONAL_SET_FLAG(*srcreg & mask,F_CF);
+ *srcreg ^= mask;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xbc
+****************************************************************************/
+void x86emuOp2_bsf(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("BSF\n");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ srcoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",");
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval, *dstreg;
+
+ dstreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_long(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 0; *dstreg < 32; (*dstreg)++)
+ if ((srcval >> *dstreg) & 1) break;
+ } else {
+ u16 srcval, *dstreg;
+
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_word(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 0; *dstreg < 16; (*dstreg)++)
+ if ((srcval >> *dstreg) & 1) break;
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *srcreg, *dstreg;
+
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF);
+ for(*dstreg = 0; *dstreg < 32; (*dstreg)++)
+ if ((*srcreg >> *dstreg) & 1) break;
+ } else {
+ u16 *srcreg, *dstreg;
+
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF);
+ for(*dstreg = 0; *dstreg < 16; (*dstreg)++)
+ if ((*srcreg >> *dstreg) & 1) break;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xbd
+****************************************************************************/
+void x86emuOp2_bsr(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("BSF\n");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ srcoffset = decode_rmXX_address(mod, rl);
+ DECODE_PRINTF(",");
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 srcval, *dstreg;
+
+ dstreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_long(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 31; *dstreg > 0; (*dstreg)--)
+ if ((srcval >> *dstreg) & 1) break;
+ } else {
+ u16 srcval, *dstreg;
+
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ srcval = fetch_data_word(srcoffset);
+ CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
+ for(*dstreg = 15; *dstreg > 0; (*dstreg)--)
+ if ((srcval >> *dstreg) & 1) break;
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *srcreg, *dstreg;
+
+ srcreg = DECODE_RM_LONG_REGISTER(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_LONG_REGISTER(rh);
+ TRACE_AND_STEP();
+ CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF);
+ for(*dstreg = 31; *dstreg > 0; (*dstreg)--)
+ if ((*srcreg >> *dstreg) & 1) break;
+ } else {
+ u16 *srcreg, *dstreg;
+
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF(",");
+ dstreg = DECODE_RM_WORD_REGISTER(rh);
+ TRACE_AND_STEP();
+ CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF);
+ for(*dstreg = 15; *dstreg > 0; (*dstreg)--)
+ if ((*srcreg >> *dstreg) & 1) break;
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xbe
+****************************************************************************/
+void x86emuOp2_movsx_byte_R_RM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOVSX\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg;
+ u32 srcval;
+
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ srcval = (s32)((s8)fetch_data_byte(srcoffset));
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = srcval;
+ } else {
+ u16 *destreg;
+ u16 srcval;
+
+ destreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ srcval = (s16)((s8)fetch_data_byte(srcoffset));
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = srcval;
+ }
+ } else { /* register to register */
+ if (M.x86.mode & SYSMODE_PREFIX_DATA) {
+ u32 *destreg;
+ u8 *srcreg;
+
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = (s32)((s8)*srcreg);
+ } else {
+ u16 *destreg;
+ u8 *srcreg;
+
+ destreg = DECODE_RM_WORD_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_BYTE_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = (s16)((s8)*srcreg);
+ }
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/****************************************************************************
+REMARKS:
+Handles opcode 0x0f,0xbf
+****************************************************************************/
+void x86emuOp2_movsx_word_R_RM(u8 X86EMU_UNUSED(op2))
+{
+ int mod, rl, rh;
+ uint srcoffset;
+ u32 *destreg;
+ u32 srcval;
+ u16 *srcreg;
+
+ START_OF_INSTR();
+ DECODE_PRINTF("MOVSX\t");
+ FETCH_DECODE_MODRM(mod, rh, rl);
+ if (mod < 3) {
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcoffset = decode_rmXX_address(mod, rl);
+ srcval = (s32)((s16)fetch_data_word(srcoffset));
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = srcval;
+ } else { /* register to register */
+ destreg = DECODE_RM_LONG_REGISTER(rh);
+ DECODE_PRINTF(",");
+ srcreg = DECODE_RM_WORD_REGISTER(rl);
+ DECODE_PRINTF("\n");
+ TRACE_AND_STEP();
+ *destreg = (s32)((s16)*srcreg);
+ }
+ DECODE_CLEAR_SEGOVR();
+ END_OF_INSTR();
+}
+
+/***************************************************************************
+ * Double byte operation code table:
+ **************************************************************************/
+void (*x86emu_optab2[256])(u8) =
+{
+/* 0x00 */ x86emuOp2_illegal_op, /* Group F (ring 0 PM) */
+/* 0x01 */ x86emuOp2_illegal_op, /* Group G (ring 0 PM) */
+/* 0x02 */ x86emuOp2_illegal_op, /* lar (ring 0 PM) */
+/* 0x03 */ x86emuOp2_illegal_op, /* lsl (ring 0 PM) */
+/* 0x04 */ x86emuOp2_illegal_op,
+/* 0x05 */ x86emuOp2_illegal_op, /* loadall (undocumented) */
+/* 0x06 */ x86emuOp2_illegal_op, /* clts (ring 0 PM) */
+/* 0x07 */ x86emuOp2_illegal_op, /* loadall (undocumented) */
+/* 0x08 */ x86emuOp2_illegal_op, /* invd (ring 0 PM) */
+/* 0x09 */ x86emuOp2_illegal_op, /* wbinvd (ring 0 PM) */
+/* 0x0a */ x86emuOp2_illegal_op,
+/* 0x0b */ x86emuOp2_illegal_op,
+/* 0x0c */ x86emuOp2_illegal_op,
+/* 0x0d */ x86emuOp2_illegal_op,
+/* 0x0e */ x86emuOp2_illegal_op,
+/* 0x0f */ x86emuOp2_illegal_op,
+
+/* 0x10 */ x86emuOp2_illegal_op,
+/* 0x11 */ x86emuOp2_illegal_op,
+/* 0x12 */ x86emuOp2_illegal_op,
+/* 0x13 */ x86emuOp2_illegal_op,
+/* 0x14 */ x86emuOp2_illegal_op,
+/* 0x15 */ x86emuOp2_illegal_op,
+/* 0x16 */ x86emuOp2_illegal_op,
+/* 0x17 */ x86emuOp2_illegal_op,
+/* 0x18 */ x86emuOp2_illegal_op,
+/* 0x19 */ x86emuOp2_illegal_op,
+/* 0x1a */ x86emuOp2_illegal_op,
+/* 0x1b */ x86emuOp2_illegal_op,
+/* 0x1c */ x86emuOp2_illegal_op,
+/* 0x1d */ x86emuOp2_illegal_op,
+/* 0x1e */ x86emuOp2_illegal_op,
+/* 0x1f */ x86emuOp2_illegal_op,
+
+/* 0x20 */ x86emuOp2_illegal_op, /* mov reg32,creg (ring 0 PM) */
+/* 0x21 */ x86emuOp2_illegal_op, /* mov reg32,dreg (ring 0 PM) */
+/* 0x22 */ x86emuOp2_illegal_op, /* mov creg,reg32 (ring 0 PM) */
+/* 0x23 */ x86emuOp2_illegal_op, /* mov dreg,reg32 (ring 0 PM) */
+/* 0x24 */ x86emuOp2_illegal_op, /* mov reg32,treg (ring 0 PM) */
+/* 0x25 */ x86emuOp2_illegal_op,
+/* 0x26 */ x86emuOp2_illegal_op, /* mov treg,reg32 (ring 0 PM) */
+/* 0x27 */ x86emuOp2_illegal_op,
+/* 0x28 */ x86emuOp2_illegal_op,
+/* 0x29 */ x86emuOp2_illegal_op,
+/* 0x2a */ x86emuOp2_illegal_op,
+/* 0x2b */ x86emuOp2_illegal_op,
+/* 0x2c */ x86emuOp2_illegal_op,
+/* 0x2d */ x86emuOp2_illegal_op,
+/* 0x2e */ x86emuOp2_illegal_op,
+/* 0x2f */ x86emuOp2_illegal_op,
+
+/* 0x30 */ x86emuOp2_illegal_op,
+/* 0x31 */ x86emuOp2_illegal_op,
+/* 0x32 */ x86emuOp2_illegal_op,
+/* 0x33 */ x86emuOp2_illegal_op,
+/* 0x34 */ x86emuOp2_illegal_op,
+/* 0x35 */ x86emuOp2_illegal_op,
+/* 0x36 */ x86emuOp2_illegal_op,
+/* 0x37 */ x86emuOp2_illegal_op,
+/* 0x38 */ x86emuOp2_illegal_op,
+/* 0x39 */ x86emuOp2_illegal_op,
+/* 0x3a */ x86emuOp2_illegal_op,
+/* 0x3b */ x86emuOp2_illegal_op,
+/* 0x3c */ x86emuOp2_illegal_op,
+/* 0x3d */ x86emuOp2_illegal_op,
+/* 0x3e */ x86emuOp2_illegal_op,
+/* 0x3f */ x86emuOp2_illegal_op,
+
+/* 0x40 */ x86emuOp2_illegal_op,
+/* 0x41 */ x86emuOp2_illegal_op,
+/* 0x42 */ x86emuOp2_illegal_op,
+/* 0x43 */ x86emuOp2_illegal_op,
+/* 0x44 */ x86emuOp2_illegal_op,
+/* 0x45 */ x86emuOp2_illegal_op,
+/* 0x46 */ x86emuOp2_illegal_op,
+/* 0x47 */ x86emuOp2_illegal_op,
+/* 0x48 */ x86emuOp2_illegal_op,
+/* 0x49 */ x86emuOp2_illegal_op,
+/* 0x4a */ x86emuOp2_illegal_op,
+/* 0x4b */ x86emuOp2_illegal_op,
+/* 0x4c */ x86emuOp2_illegal_op,
+/* 0x4d */ x86emuOp2_illegal_op,
+/* 0x4e */ x86emuOp2_illegal_op,
+/* 0x4f */ x86emuOp2_illegal_op,
+
+/* 0x50 */ x86emuOp2_illegal_op,
+/* 0x51 */ x86emuOp2_illegal_op,
+/* 0x52 */ x86emuOp2_illegal_op,
+/* 0x53 */ x86emuOp2_illegal_op,
+/* 0x54 */ x86emuOp2_illegal_op,
+/* 0x55 */ x86emuOp2_illegal_op,
+/* 0x56 */ x86emuOp2_illegal_op,
+/* 0x57 */ x86emuOp2_illegal_op,
+/* 0x58 */ x86emuOp2_illegal_op,
+/* 0x59 */ x86emuOp2_illegal_op,
+/* 0x5a */ x86emuOp2_illegal_op,
+/* 0x5b */ x86emuOp2_illegal_op,
+/* 0x5c */ x86emuOp2_illegal_op,
+/* 0x5d */ x86emuOp2_illegal_op,
+/* 0x5e */ x86emuOp2_illegal_op,
+/* 0x5f */ x86emuOp2_illegal_op,
+
+/* 0x60 */ x86emuOp2_illegal_op,
+/* 0x61 */ x86emuOp2_illegal_op,
+/* 0x62 */ x86emuOp2_illegal_op,
+/* 0x63 */ x86emuOp2_illegal_op,
+/* 0x64 */ x86emuOp2_illegal_op,
+/* 0x65 */ x86emuOp2_illegal_op,
+/* 0x66 */ x86emuOp2_illegal_op,
+/* 0x67 */ x86emuOp2_illegal_op,
+/* 0x68 */ x86emuOp2_illegal_op,
+/* 0x69 */ x86emuOp2_illegal_op,
+/* 0x6a */ x86emuOp2_illegal_op,
+/* 0x6b */ x86emuOp2_illegal_op,
+/* 0x6c */ x86emuOp2_illegal_op,
+/* 0x6d */ x86emuOp2_illegal_op,
+/* 0x6e */ x86emuOp2_illegal_op,
+/* 0x6f */ x86emuOp2_illegal_op,
+
+/* 0x70 */ x86emuOp2_illegal_op,
+/* 0x71 */ x86emuOp2_illegal_op,
+/* 0x72 */ x86emuOp2_illegal_op,
+/* 0x73 */ x86emuOp2_illegal_op,
+/* 0x74 */ x86emuOp2_illegal_op,
+/* 0x75 */ x86emuOp2_illegal_op,
+/* 0x76 */ x86emuOp2_illegal_op,
+/* 0x77 */ x86emuOp2_illegal_op,
+/* 0x78 */ x86emuOp2_illegal_op,
+/* 0x79 */ x86emuOp2_illegal_op,
+/* 0x7a */ x86emuOp2_illegal_op,
+/* 0x7b */ x86emuOp2_illegal_op,
+/* 0x7c */ x86emuOp2_illegal_op,
+/* 0x7d */ x86emuOp2_illegal_op,
+/* 0x7e */ x86emuOp2_illegal_op,
+/* 0x7f */ x86emuOp2_illegal_op,
+
+/* 0x80 */ x86emuOp2_long_jump,
+/* 0x81 */ x86emuOp2_long_jump,
+/* 0x82 */ x86emuOp2_long_jump,
+/* 0x83 */ x86emuOp2_long_jump,
+/* 0x84 */ x86emuOp2_long_jump,
+/* 0x85 */ x86emuOp2_long_jump,
+/* 0x86 */ x86emuOp2_long_jump,
+/* 0x87 */ x86emuOp2_long_jump,
+/* 0x88 */ x86emuOp2_long_jump,
+/* 0x89 */ x86emuOp2_long_jump,
+/* 0x8a */ x86emuOp2_long_jump,
+/* 0x8b */ x86emuOp2_long_jump,
+/* 0x8c */ x86emuOp2_long_jump,
+/* 0x8d */ x86emuOp2_long_jump,
+/* 0x8e */ x86emuOp2_long_jump,
+/* 0x8f */ x86emuOp2_long_jump,
+
+/* 0x90 */ x86emuOp2_set_byte,
+/* 0x91 */ x86emuOp2_set_byte,
+/* 0x92 */ x86emuOp2_set_byte,
+/* 0x93 */ x86emuOp2_set_byte,
+/* 0x94 */ x86emuOp2_set_byte,
+/* 0x95 */ x86emuOp2_set_byte,
+/* 0x96 */ x86emuOp2_set_byte,
+/* 0x97 */ x86emuOp2_set_byte,
+/* 0x98 */ x86emuOp2_set_byte,
+/* 0x99 */ x86emuOp2_set_byte,
+/* 0x9a */ x86emuOp2_set_byte,
+/* 0x9b */ x86emuOp2_set_byte,
+/* 0x9c */ x86emuOp2_set_byte,
+/* 0x9d */ x86emuOp2_set_byte,
+/* 0x9e */ x86emuOp2_set_byte,
+/* 0x9f */ x86emuOp2_set_byte,
+
+/* 0xa0 */ x86emuOp2_push_FS,
+/* 0xa1 */ x86emuOp2_pop_FS,
+/* 0xa2 */ x86emuOp2_illegal_op,
+/* 0xa3 */ x86emuOp2_bt_R,
+/* 0xa4 */ x86emuOp2_shld_IMM,
+/* 0xa5 */ x86emuOp2_shld_CL,
+/* 0xa6 */ x86emuOp2_illegal_op,
+/* 0xa7 */ x86emuOp2_illegal_op,
+/* 0xa8 */ x86emuOp2_push_GS,
+/* 0xa9 */ x86emuOp2_pop_GS,
+/* 0xaa */ x86emuOp2_illegal_op,
+/* 0xab */ x86emuOp2_bt_R,
+/* 0xac */ x86emuOp2_shrd_IMM,
+/* 0xad */ x86emuOp2_shrd_CL,
+/* 0xae */ x86emuOp2_illegal_op,
+/* 0xaf */ x86emuOp2_imul_R_RM,
+
+/* 0xb0 */ x86emuOp2_illegal_op, /* TODO: cmpxchg */
+/* 0xb1 */ x86emuOp2_illegal_op, /* TODO: cmpxchg */
+/* 0xb2 */ x86emuOp2_lss_R_IMM,
+/* 0xb3 */ x86emuOp2_btr_R,
+/* 0xb4 */ x86emuOp2_lfs_R_IMM,
+/* 0xb5 */ x86emuOp2_lgs_R_IMM,
+/* 0xb6 */ x86emuOp2_movzx_byte_R_RM,
+/* 0xb7 */ x86emuOp2_movzx_word_R_RM,
+/* 0xb8 */ x86emuOp2_illegal_op,
+/* 0xb9 */ x86emuOp2_illegal_op,
+/* 0xba */ x86emuOp2_btX_I,
+/* 0xbb */ x86emuOp2_btc_R,
+/* 0xbc */ x86emuOp2_bsf,
+/* 0xbd */ x86emuOp2_bsr,
+/* 0xbe */ x86emuOp2_movsx_byte_R_RM,
+/* 0xbf */ x86emuOp2_movsx_word_R_RM,
+
+/* 0xc0 */ x86emuOp2_illegal_op, /* TODO: xadd */
+/* 0xc1 */ x86emuOp2_illegal_op, /* TODO: xadd */
+/* 0xc2 */ x86emuOp2_illegal_op,
+/* 0xc3 */ x86emuOp2_illegal_op,
+/* 0xc4 */ x86emuOp2_illegal_op,
+/* 0xc5 */ x86emuOp2_illegal_op,
+/* 0xc6 */ x86emuOp2_illegal_op,
+/* 0xc7 */ x86emuOp2_illegal_op,
+/* 0xc8 */ x86emuOp2_bswap,
+/* 0xc9 */ x86emuOp2_bswap,
+/* 0xca */ x86emuOp2_bswap,
+/* 0xcb */ x86emuOp2_bswap,
+/* 0xcc */ x86emuOp2_bswap,
+/* 0xcd */ x86emuOp2_bswap,
+/* 0xce */ x86emuOp2_bswap,
+/* 0xcf */ x86emuOp2_bswap,
+
+/* 0xd0 */ x86emuOp2_illegal_op,
+/* 0xd1 */ x86emuOp2_illegal_op,
+/* 0xd2 */ x86emuOp2_illegal_op,
+/* 0xd3 */ x86emuOp2_illegal_op,
+/* 0xd4 */ x86emuOp2_illegal_op,
+/* 0xd5 */ x86emuOp2_illegal_op,
+/* 0xd6 */ x86emuOp2_illegal_op,
+/* 0xd7 */ x86emuOp2_illegal_op,
+/* 0xd8 */ x86emuOp2_illegal_op,
+/* 0xd9 */ x86emuOp2_illegal_op,
+/* 0xda */ x86emuOp2_illegal_op,
+/* 0xdb */ x86emuOp2_illegal_op,
+/* 0xdc */ x86emuOp2_illegal_op,
+/* 0xdd */ x86emuOp2_illegal_op,
+/* 0xde */ x86emuOp2_illegal_op,
+/* 0xdf */ x86emuOp2_illegal_op,
+
+/* 0xe0 */ x86emuOp2_illegal_op,
+/* 0xe1 */ x86emuOp2_illegal_op,
+/* 0xe2 */ x86emuOp2_illegal_op,
+/* 0xe3 */ x86emuOp2_illegal_op,
+/* 0xe4 */ x86emuOp2_illegal_op,
+/* 0xe5 */ x86emuOp2_illegal_op,
+/* 0xe6 */ x86emuOp2_illegal_op,
+/* 0xe7 */ x86emuOp2_illegal_op,
+/* 0xe8 */ x86emuOp2_illegal_op,
+/* 0xe9 */ x86emuOp2_illegal_op,
+/* 0xea */ x86emuOp2_illegal_op,
+/* 0xeb */ x86emuOp2_illegal_op,
+/* 0xec */ x86emuOp2_illegal_op,
+/* 0xed */ x86emuOp2_illegal_op,
+/* 0xee */ x86emuOp2_illegal_op,
+/* 0xef */ x86emuOp2_illegal_op,
+
+/* 0xf0 */ x86emuOp2_illegal_op,
+/* 0xf1 */ x86emuOp2_illegal_op,
+/* 0xf2 */ x86emuOp2_illegal_op,
+/* 0xf3 */ x86emuOp2_illegal_op,
+/* 0xf4 */ x86emuOp2_illegal_op,
+/* 0xf5 */ x86emuOp2_illegal_op,
+/* 0xf6 */ x86emuOp2_illegal_op,
+/* 0xf7 */ x86emuOp2_illegal_op,
+/* 0xf8 */ x86emuOp2_illegal_op,
+/* 0xf9 */ x86emuOp2_illegal_op,
+/* 0xfa */ x86emuOp2_illegal_op,
+/* 0xfb */ x86emuOp2_illegal_op,
+/* 0xfc */ x86emuOp2_illegal_op,
+/* 0xfd */ x86emuOp2_illegal_op,
+/* 0xfe */ x86emuOp2_illegal_op,
+/* 0xff */ x86emuOp2_illegal_op,
+};
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1996-1999 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: Watcom C++ 10.6 or later
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: Inline assembler versions of the primitive operand
+* functions for faster performance. At the moment this is
+* x86 inline assembler, but these functions could be replaced
+* with native inline assembler for each supported processor
+* platform.
+*
+****************************************************************************/
+/* $XFree86: xc/extras/x86emu/src/x86emu/x86emu/prim_asm.h,v 1.3 2000/04/19 15:48:15 tsi Exp $ */
+
+#ifndef __X86EMU_PRIM_ASM_H
+#define __X86EMU_PRIM_ASM_H
+
+#ifdef __WATCOMC__
+
+#ifndef VALIDATE
+#define __HAVE_INLINE_ASSEMBLER__
+#endif
+
+u32 get_flags_asm(void);
+#pragma aux get_flags_asm = \
+ "pushf" \
+ "pop eax" \
+ value [eax] \
+ modify exact [eax];
+
+u16 aaa_word_asm(u32 *flags,u16 d);
+#pragma aux aaa_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "aaa" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] \
+ value [ax] \
+ modify exact [ax];
+
+u16 aas_word_asm(u32 *flags,u16 d);
+#pragma aux aas_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "aas" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] \
+ value [ax] \
+ modify exact [ax];
+
+u16 aad_word_asm(u32 *flags,u16 d);
+#pragma aux aad_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "aad" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] \
+ value [ax] \
+ modify exact [ax];
+
+u16 aam_word_asm(u32 *flags,u8 d);
+#pragma aux aam_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "aam" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] \
+ value [ax] \
+ modify exact [ax];
+
+u8 adc_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux adc_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "adc al,bl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [bl] \
+ value [al] \
+ modify exact [al bl];
+
+u16 adc_word_asm(u32 *flags,u16 d, u16 s);
+#pragma aux adc_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "adc ax,bx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [bx] \
+ value [ax] \
+ modify exact [ax bx];
+
+u32 adc_long_asm(u32 *flags,u32 d, u32 s);
+#pragma aux adc_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "adc eax,ebx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [ebx] \
+ value [eax] \
+ modify exact [eax ebx];
+
+u8 add_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux add_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "add al,bl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [bl] \
+ value [al] \
+ modify exact [al bl];
+
+u16 add_word_asm(u32 *flags,u16 d, u16 s);
+#pragma aux add_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "add ax,bx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [bx] \
+ value [ax] \
+ modify exact [ax bx];
+
+u32 add_long_asm(u32 *flags,u32 d, u32 s);
+#pragma aux add_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "add eax,ebx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [ebx] \
+ value [eax] \
+ modify exact [eax ebx];
+
+u8 and_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux and_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "and al,bl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [bl] \
+ value [al] \
+ modify exact [al bl];
+
+u16 and_word_asm(u32 *flags,u16 d, u16 s);
+#pragma aux and_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "and ax,bx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [bx] \
+ value [ax] \
+ modify exact [ax bx];
+
+u32 and_long_asm(u32 *flags,u32 d, u32 s);
+#pragma aux and_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "and eax,ebx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [ebx] \
+ value [eax] \
+ modify exact [eax ebx];
+
+u8 cmp_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux cmp_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "cmp al,bl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [bl] \
+ value [al] \
+ modify exact [al bl];
+
+u16 cmp_word_asm(u32 *flags,u16 d, u16 s);
+#pragma aux cmp_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "cmp ax,bx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [bx] \
+ value [ax] \
+ modify exact [ax bx];
+
+u32 cmp_long_asm(u32 *flags,u32 d, u32 s);
+#pragma aux cmp_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "cmp eax,ebx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [ebx] \
+ value [eax] \
+ modify exact [eax ebx];
+
+u8 daa_byte_asm(u32 *flags,u8 d);
+#pragma aux daa_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "daa" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] \
+ value [al] \
+ modify exact [al];
+
+u8 das_byte_asm(u32 *flags,u8 d);
+#pragma aux das_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "das" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] \
+ value [al] \
+ modify exact [al];
+
+u8 dec_byte_asm(u32 *flags,u8 d);
+#pragma aux dec_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "dec al" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] \
+ value [al] \
+ modify exact [al];
+
+u16 dec_word_asm(u32 *flags,u16 d);
+#pragma aux dec_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "dec ax" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] \
+ value [ax] \
+ modify exact [ax];
+
+u32 dec_long_asm(u32 *flags,u32 d);
+#pragma aux dec_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "dec eax" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] \
+ value [eax] \
+ modify exact [eax];
+
+u8 inc_byte_asm(u32 *flags,u8 d);
+#pragma aux inc_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "inc al" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] \
+ value [al] \
+ modify exact [al];
+
+u16 inc_word_asm(u32 *flags,u16 d);
+#pragma aux inc_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "inc ax" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] \
+ value [ax] \
+ modify exact [ax];
+
+u32 inc_long_asm(u32 *flags,u32 d);
+#pragma aux inc_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "inc eax" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] \
+ value [eax] \
+ modify exact [eax];
+
+u8 or_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux or_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "or al,bl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [bl] \
+ value [al] \
+ modify exact [al bl];
+
+u16 or_word_asm(u32 *flags,u16 d, u16 s);
+#pragma aux or_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "or ax,bx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [bx] \
+ value [ax] \
+ modify exact [ax bx];
+
+u32 or_long_asm(u32 *flags,u32 d, u32 s);
+#pragma aux or_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "or eax,ebx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [ebx] \
+ value [eax] \
+ modify exact [eax ebx];
+
+u8 neg_byte_asm(u32 *flags,u8 d);
+#pragma aux neg_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "neg al" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] \
+ value [al] \
+ modify exact [al];
+
+u16 neg_word_asm(u32 *flags,u16 d);
+#pragma aux neg_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "neg ax" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] \
+ value [ax] \
+ modify exact [ax];
+
+u32 neg_long_asm(u32 *flags,u32 d);
+#pragma aux neg_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "neg eax" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] \
+ value [eax] \
+ modify exact [eax];
+
+u8 not_byte_asm(u32 *flags,u8 d);
+#pragma aux not_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "not al" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] \
+ value [al] \
+ modify exact [al];
+
+u16 not_word_asm(u32 *flags,u16 d);
+#pragma aux not_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "not ax" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] \
+ value [ax] \
+ modify exact [ax];
+
+u32 not_long_asm(u32 *flags,u32 d);
+#pragma aux not_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "not eax" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] \
+ value [eax] \
+ modify exact [eax];
+
+u8 rcl_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux rcl_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "rcl al,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [cl] \
+ value [al] \
+ modify exact [al cl];
+
+u16 rcl_word_asm(u32 *flags,u16 d, u8 s);
+#pragma aux rcl_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "rcl ax,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [cl] \
+ value [ax] \
+ modify exact [ax cl];
+
+u32 rcl_long_asm(u32 *flags,u32 d, u8 s);
+#pragma aux rcl_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "rcl eax,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [cl] \
+ value [eax] \
+ modify exact [eax cl];
+
+u8 rcr_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux rcr_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "rcr al,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [cl] \
+ value [al] \
+ modify exact [al cl];
+
+u16 rcr_word_asm(u32 *flags,u16 d, u8 s);
+#pragma aux rcr_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "rcr ax,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [cl] \
+ value [ax] \
+ modify exact [ax cl];
+
+u32 rcr_long_asm(u32 *flags,u32 d, u8 s);
+#pragma aux rcr_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "rcr eax,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [cl] \
+ value [eax] \
+ modify exact [eax cl];
+
+u8 rol_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux rol_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "rol al,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [cl] \
+ value [al] \
+ modify exact [al cl];
+
+u16 rol_word_asm(u32 *flags,u16 d, u8 s);
+#pragma aux rol_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "rol ax,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [cl] \
+ value [ax] \
+ modify exact [ax cl];
+
+u32 rol_long_asm(u32 *flags,u32 d, u8 s);
+#pragma aux rol_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "rol eax,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [cl] \
+ value [eax] \
+ modify exact [eax cl];
+
+u8 ror_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux ror_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "ror al,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [cl] \
+ value [al] \
+ modify exact [al cl];
+
+u16 ror_word_asm(u32 *flags,u16 d, u8 s);
+#pragma aux ror_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "ror ax,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [cl] \
+ value [ax] \
+ modify exact [ax cl];
+
+u32 ror_long_asm(u32 *flags,u32 d, u8 s);
+#pragma aux ror_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "ror eax,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [cl] \
+ value [eax] \
+ modify exact [eax cl];
+
+u8 shl_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux shl_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "shl al,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [cl] \
+ value [al] \
+ modify exact [al cl];
+
+u16 shl_word_asm(u32 *flags,u16 d, u8 s);
+#pragma aux shl_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "shl ax,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [cl] \
+ value [ax] \
+ modify exact [ax cl];
+
+u32 shl_long_asm(u32 *flags,u32 d, u8 s);
+#pragma aux shl_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "shl eax,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [cl] \
+ value [eax] \
+ modify exact [eax cl];
+
+u8 shr_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux shr_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "shr al,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [cl] \
+ value [al] \
+ modify exact [al cl];
+
+u16 shr_word_asm(u32 *flags,u16 d, u8 s);
+#pragma aux shr_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "shr ax,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [cl] \
+ value [ax] \
+ modify exact [ax cl];
+
+u32 shr_long_asm(u32 *flags,u32 d, u8 s);
+#pragma aux shr_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "shr eax,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [cl] \
+ value [eax] \
+ modify exact [eax cl];
+
+u8 sar_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux sar_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "sar al,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [cl] \
+ value [al] \
+ modify exact [al cl];
+
+u16 sar_word_asm(u32 *flags,u16 d, u8 s);
+#pragma aux sar_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "sar ax,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [cl] \
+ value [ax] \
+ modify exact [ax cl];
+
+u32 sar_long_asm(u32 *flags,u32 d, u8 s);
+#pragma aux sar_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "sar eax,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [cl] \
+ value [eax] \
+ modify exact [eax cl];
+
+u16 shld_word_asm(u32 *flags,u16 d, u16 fill, u8 s);
+#pragma aux shld_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "shld ax,dx,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [dx] [cl] \
+ value [ax] \
+ modify exact [ax dx cl];
+
+u32 shld_long_asm(u32 *flags,u32 d, u32 fill, u8 s);
+#pragma aux shld_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "shld eax,edx,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [edx] [cl] \
+ value [eax] \
+ modify exact [eax edx cl];
+
+u16 shrd_word_asm(u32 *flags,u16 d, u16 fill, u8 s);
+#pragma aux shrd_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "shrd ax,dx,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [dx] [cl] \
+ value [ax] \
+ modify exact [ax dx cl];
+
+u32 shrd_long_asm(u32 *flags,u32 d, u32 fill, u8 s);
+#pragma aux shrd_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "shrd eax,edx,cl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [edx] [cl] \
+ value [eax] \
+ modify exact [eax edx cl];
+
+u8 sbb_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux sbb_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "sbb al,bl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [bl] \
+ value [al] \
+ modify exact [al bl];
+
+u16 sbb_word_asm(u32 *flags,u16 d, u16 s);
+#pragma aux sbb_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "sbb ax,bx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [bx] \
+ value [ax] \
+ modify exact [ax bx];
+
+u32 sbb_long_asm(u32 *flags,u32 d, u32 s);
+#pragma aux sbb_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "sbb eax,ebx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [ebx] \
+ value [eax] \
+ modify exact [eax ebx];
+
+u8 sub_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux sub_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "sub al,bl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [bl] \
+ value [al] \
+ modify exact [al bl];
+
+u16 sub_word_asm(u32 *flags,u16 d, u16 s);
+#pragma aux sub_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "sub ax,bx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [bx] \
+ value [ax] \
+ modify exact [ax bx];
+
+u32 sub_long_asm(u32 *flags,u32 d, u32 s);
+#pragma aux sub_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "sub eax,ebx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [ebx] \
+ value [eax] \
+ modify exact [eax ebx];
+
+void test_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux test_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "test al,bl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [bl] \
+ modify exact [al bl];
+
+void test_word_asm(u32 *flags,u16 d, u16 s);
+#pragma aux test_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "test ax,bx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [bx] \
+ modify exact [ax bx];
+
+void test_long_asm(u32 *flags,u32 d, u32 s);
+#pragma aux test_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "test eax,ebx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [ebx] \
+ modify exact [eax ebx];
+
+u8 xor_byte_asm(u32 *flags,u8 d, u8 s);
+#pragma aux xor_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "xor al,bl" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [al] [bl] \
+ value [al] \
+ modify exact [al bl];
+
+u16 xor_word_asm(u32 *flags,u16 d, u16 s);
+#pragma aux xor_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "xor ax,bx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [ax] [bx] \
+ value [ax] \
+ modify exact [ax bx];
+
+u32 xor_long_asm(u32 *flags,u32 d, u32 s);
+#pragma aux xor_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "xor eax,ebx" \
+ "pushf" \
+ "pop [edi]" \
+ parm [edi] [eax] [ebx] \
+ value [eax] \
+ modify exact [eax ebx];
+
+void imul_byte_asm(u32 *flags,u16 *ax,u8 d,u8 s);
+#pragma aux imul_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "imul bl" \
+ "pushf" \
+ "pop [edi]" \
+ "mov [esi],ax" \
+ parm [edi] [esi] [al] [bl] \
+ modify exact [esi ax bl];
+
+void imul_word_asm(u32 *flags,u16 *ax,u16 *dx,u16 d,u16 s);
+#pragma aux imul_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "imul bx" \
+ "pushf" \
+ "pop [edi]" \
+ "mov [esi],ax" \
+ "mov [ecx],dx" \
+ parm [edi] [esi] [ecx] [ax] [bx]\
+ modify exact [esi edi ax bx dx];
+
+void imul_long_asm(u32 *flags,u32 *eax,u32 *edx,u32 d,u32 s);
+#pragma aux imul_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "imul ebx" \
+ "pushf" \
+ "pop [edi]" \
+ "mov [esi],eax" \
+ "mov [ecx],edx" \
+ parm [edi] [esi] [ecx] [eax] [ebx] \
+ modify exact [esi edi eax ebx edx];
+
+void mul_byte_asm(u32 *flags,u16 *ax,u8 d,u8 s);
+#pragma aux mul_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "mul bl" \
+ "pushf" \
+ "pop [edi]" \
+ "mov [esi],ax" \
+ parm [edi] [esi] [al] [bl] \
+ modify exact [esi ax bl];
+
+void mul_word_asm(u32 *flags,u16 *ax,u16 *dx,u16 d,u16 s);
+#pragma aux mul_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "mul bx" \
+ "pushf" \
+ "pop [edi]" \
+ "mov [esi],ax" \
+ "mov [ecx],dx" \
+ parm [edi] [esi] [ecx] [ax] [bx]\
+ modify exact [esi edi ax bx dx];
+
+void mul_long_asm(u32 *flags,u32 *eax,u32 *edx,u32 d,u32 s);
+#pragma aux mul_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "mul ebx" \
+ "pushf" \
+ "pop [edi]" \
+ "mov [esi],eax" \
+ "mov [ecx],edx" \
+ parm [edi] [esi] [ecx] [eax] [ebx] \
+ modify exact [esi edi eax ebx edx];
+
+void idiv_byte_asm(u32 *flags,u8 *al,u8 *ah,u16 d,u8 s);
+#pragma aux idiv_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "idiv bl" \
+ "pushf" \
+ "pop [edi]" \
+ "mov [esi],al" \
+ "mov [ecx],ah" \
+ parm [edi] [esi] [ecx] [ax] [bl]\
+ modify exact [esi edi ax bl];
+
+void idiv_word_asm(u32 *flags,u16 *ax,u16 *dx,u16 dlo,u16 dhi,u16 s);
+#pragma aux idiv_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "idiv bx" \
+ "pushf" \
+ "pop [edi]" \
+ "mov [esi],ax" \
+ "mov [ecx],dx" \
+ parm [edi] [esi] [ecx] [ax] [dx] [bx]\
+ modify exact [esi edi ax dx bx];
+
+void idiv_long_asm(u32 *flags,u32 *eax,u32 *edx,u32 dlo,u32 dhi,u32 s);
+#pragma aux idiv_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "idiv ebx" \
+ "pushf" \
+ "pop [edi]" \
+ "mov [esi],eax" \
+ "mov [ecx],edx" \
+ parm [edi] [esi] [ecx] [eax] [edx] [ebx]\
+ modify exact [esi edi eax edx ebx];
+
+void div_byte_asm(u32 *flags,u8 *al,u8 *ah,u16 d,u8 s);
+#pragma aux div_byte_asm = \
+ "push [edi]" \
+ "popf" \
+ "div bl" \
+ "pushf" \
+ "pop [edi]" \
+ "mov [esi],al" \
+ "mov [ecx],ah" \
+ parm [edi] [esi] [ecx] [ax] [bl]\
+ modify exact [esi edi ax bl];
+
+void div_word_asm(u32 *flags,u16 *ax,u16 *dx,u16 dlo,u16 dhi,u16 s);
+#pragma aux div_word_asm = \
+ "push [edi]" \
+ "popf" \
+ "div bx" \
+ "pushf" \
+ "pop [edi]" \
+ "mov [esi],ax" \
+ "mov [ecx],dx" \
+ parm [edi] [esi] [ecx] [ax] [dx] [bx]\
+ modify exact [esi edi ax dx bx];
+
+void div_long_asm(u32 *flags,u32 *eax,u32 *edx,u32 dlo,u32 dhi,u32 s);
+#pragma aux div_long_asm = \
+ "push [edi]" \
+ "popf" \
+ "div ebx" \
+ "pushf" \
+ "pop [edi]" \
+ "mov [esi],eax" \
+ "mov [ecx],edx" \
+ parm [edi] [esi] [ecx] [eax] [edx] [ebx]\
+ modify exact [esi edi eax edx ebx];
+
+#endif
+
+#endif /* __X86EMU_PRIM_ASM_H */
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1991-2004 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: This file contains the code to implement the primitive
+* machine operations used by the emulation code in ops.c
+*
+* Carry Chain Calculation
+*
+* This represents a somewhat expensive calculation which is
+* apparently required to emulate the setting of the OF and AF flag.
+* The latter is not so important, but the former is. The overflow
+* flag is the XOR of the top two bits of the carry chain for an
+* addition (similar for subtraction). Since we do not want to
+* simulate the addition in a bitwise manner, we try to calculate the
+* carry chain given the two operands and the result.
+*
+* So, given the following table, which represents the addition of two
+* bits, we can derive a formula for the carry chain.
+*
+* a b cin r cout
+* 0 0 0 0 0
+* 0 0 1 1 0
+* 0 1 0 1 0
+* 0 1 1 0 1
+* 1 0 0 1 0
+* 1 0 1 0 1
+* 1 1 0 0 1
+* 1 1 1 1 1
+*
+* Construction of table for cout:
+*
+* ab
+* r \ 00 01 11 10
+* |------------------
+* 0 | 0 1 1 1
+* 1 | 0 0 1 0
+*
+* By inspection, one gets: cc = ab + r'(a + b)
+*
+* That represents alot of operations, but NO CHOICE....
+*
+* Borrow Chain Calculation.
+*
+* The following table represents the subtraction of two bits, from
+* which we can derive a formula for the borrow chain.
+*
+* a b bin r bout
+* 0 0 0 0 0
+* 0 0 1 1 1
+* 0 1 0 1 1
+* 0 1 1 0 1
+* 1 0 0 1 0
+* 1 0 1 0 0
+* 1 1 0 0 0
+* 1 1 1 1 1
+*
+* Construction of table for cout:
+*
+* ab
+* r \ 00 01 11 10
+* |------------------
+* 0 | 0 1 0 0
+* 1 | 1 1 1 0
+*
+* By inspection, one gets: bc = a'b + r(a' + b)
+*
+****************************************************************************/
+
+#define PRIM_OPS_NO_REDEFINE_ASM
+#include "x86emui.h"
+
+#define abs(x) ({ \
+ int __x = (x); \
+ (__x < 0) ? -__x : __x; \
+ })
+
+#define labs(x) ({ \
+ long __x = (x); \
+ (__x < 0) ? -__x : __x; \
+ })
+
+/*------------------------- Global Variables ------------------------------*/
+
+static u32 x86emu_parity_tab[8] =
+{
+ 0x96696996,
+ 0x69969669,
+ 0x69969669,
+ 0x96696996,
+ 0x69969669,
+ 0x96696996,
+ 0x96696996,
+ 0x69969669,
+};
+
+#define PARITY(x) (((x86emu_parity_tab[(x) / 32] >> ((x) % 32)) & 1) == 0)
+#define XOR2(x) (((x) ^ ((x)>>1)) & 0x1)
+
+/*----------------------------- Implementation ----------------------------*/
+
+
+/*--------- Side effects helper functions -------*/
+
+/****************************************************************************
+REMARKS:
+implements side efects for byte operations that don't overflow
+****************************************************************************/
+
+static void set_parity_flag(u32 res)
+{
+ CONDITIONAL_SET_FLAG(PARITY(res & 0xFF), F_PF);
+}
+
+static void set_szp_flags_8(u8 res)
+{
+ CONDITIONAL_SET_FLAG(res & 0x80, F_SF);
+ CONDITIONAL_SET_FLAG(res == 0, F_ZF);
+ set_parity_flag(res);
+}
+
+static void set_szp_flags_16(u16 res)
+{
+ CONDITIONAL_SET_FLAG(res & 0x8000, F_SF);
+ CONDITIONAL_SET_FLAG(res == 0, F_ZF);
+ set_parity_flag(res);
+}
+
+static void set_szp_flags_32(u32 res)
+{
+ CONDITIONAL_SET_FLAG(res & 0x80000000, F_SF);
+ CONDITIONAL_SET_FLAG(res == 0, F_ZF);
+ set_parity_flag(res);
+}
+
+static void no_carry_byte_side_eff(u8 res)
+{
+ CLEAR_FLAG(F_OF);
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_AF);
+ set_szp_flags_8(res);
+}
+
+static void no_carry_word_side_eff(u16 res)
+{
+ CLEAR_FLAG(F_OF);
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_AF);
+ set_szp_flags_16(res);
+}
+
+static void no_carry_long_side_eff(u32 res)
+{
+ CLEAR_FLAG(F_OF);
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_AF);
+ set_szp_flags_32(res);
+}
+
+static void calc_carry_chain(int bits, u32 d, u32 s, u32 res, int set_carry)
+{
+ u32 cc;
+
+ cc = (s & d) | ((~res) & (s | d));
+ CONDITIONAL_SET_FLAG(XOR2(cc >> (bits - 2)), F_OF);
+ CONDITIONAL_SET_FLAG(cc & 0x8, F_AF);
+ if (set_carry) {
+ CONDITIONAL_SET_FLAG(res & (1 << bits), F_CF);
+ }
+}
+
+static void calc_borrow_chain(int bits, u32 d, u32 s, u32 res, int set_carry)
+{
+ u32 bc;
+
+ bc = (res & (~d | s)) | (~d & s);
+ CONDITIONAL_SET_FLAG(XOR2(bc >> (bits - 2)), F_OF);
+ CONDITIONAL_SET_FLAG(bc & 0x8, F_AF);
+ if (set_carry) {
+ CONDITIONAL_SET_FLAG(bc & (1 << (bits - 1)), F_CF);
+ }
+}
+
+/****************************************************************************
+REMARKS:
+Implements the AAA instruction and side effects.
+****************************************************************************/
+u16 aaa_word(u16 d)
+{
+ u16 res;
+ if ((d & 0xf) > 0x9 || ACCESS_FLAG(F_AF)) {
+ d += 0x6;
+ d += 0x100;
+ SET_FLAG(F_AF);
+ SET_FLAG(F_CF);
+ } else {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_AF);
+ }
+ res = (u16)(d & 0xFF0F);
+ set_szp_flags_16(res);
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the AAA instruction and side effects.
+****************************************************************************/
+u16 aas_word(u16 d)
+{
+ u16 res;
+ if ((d & 0xf) > 0x9 || ACCESS_FLAG(F_AF)) {
+ d -= 0x6;
+ d -= 0x100;
+ SET_FLAG(F_AF);
+ SET_FLAG(F_CF);
+ } else {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_AF);
+ }
+ res = (u16)(d & 0xFF0F);
+ set_szp_flags_16(res);
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the AAD instruction and side effects.
+****************************************************************************/
+u16 aad_word(u16 d)
+{
+ u16 l;
+ u8 hb, lb;
+
+ hb = (u8)((d >> 8) & 0xff);
+ lb = (u8)((d & 0xff));
+ l = (u16)((lb + 10 * hb) & 0xFF);
+
+ no_carry_byte_side_eff(l & 0xFF);
+ return l;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the AAM instruction and side effects.
+****************************************************************************/
+u16 aam_word(u8 d)
+{
+ u16 h, l;
+
+ h = (u16)(d / 10);
+ l = (u16)(d % 10);
+ l |= (u16)(h << 8);
+
+ no_carry_byte_side_eff(l & 0xFF);
+ return l;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the ADC instruction and side effects.
+****************************************************************************/
+u8 adc_byte(u8 d, u8 s)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d + s;
+ if (ACCESS_FLAG(F_CF)) res++;
+
+ set_szp_flags_8(res);
+ calc_carry_chain(8,s,d,res,1);
+
+ return (u8)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the ADC instruction and side effects.
+****************************************************************************/
+u16 adc_word(u16 d, u16 s)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d + s;
+ if (ACCESS_FLAG(F_CF))
+ res++;
+
+ set_szp_flags_16((u16)res);
+ calc_carry_chain(16,s,d,res,1);
+
+ return (u16)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the ADC instruction and side effects.
+****************************************************************************/
+u32 adc_long(u32 d, u32 s)
+{
+ u32 lo; /* all operands in native machine order */
+ u32 hi;
+ u32 res;
+
+ lo = (d & 0xFFFF) + (s & 0xFFFF);
+ res = d + s;
+
+ if (ACCESS_FLAG(F_CF)) {
+ lo++;
+ res++;
+ }
+
+ hi = (lo >> 16) + (d >> 16) + (s >> 16);
+
+ set_szp_flags_32(res);
+ calc_carry_chain(32,s,d,res,0);
+
+ CONDITIONAL_SET_FLAG(hi & 0x10000, F_CF);
+
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the ADD instruction and side effects.
+****************************************************************************/
+u8 add_byte(u8 d, u8 s)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d + s;
+ set_szp_flags_8((u8)res);
+ calc_carry_chain(8,s,d,res,1);
+
+ return (u8)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the ADD instruction and side effects.
+****************************************************************************/
+u16 add_word(u16 d, u16 s)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d + s;
+ set_szp_flags_16((u16)res);
+ calc_carry_chain(16,s,d,res,1);
+
+ return (u16)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the ADD instruction and side effects.
+****************************************************************************/
+u32 add_long(u32 d, u32 s)
+{
+ u32 res;
+
+ res = d + s;
+ set_szp_flags_32(res);
+ calc_carry_chain(32,s,d,res,0);
+
+ CONDITIONAL_SET_FLAG(res < d || res < s, F_CF);
+
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the AND instruction and side effects.
+****************************************************************************/
+u8 and_byte(u8 d, u8 s)
+{
+ u8 res; /* all operands in native machine order */
+
+ res = d & s;
+
+ no_carry_byte_side_eff(res);
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the AND instruction and side effects.
+****************************************************************************/
+u16 and_word(u16 d, u16 s)
+{
+ u16 res; /* all operands in native machine order */
+
+ res = d & s;
+
+ no_carry_word_side_eff(res);
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the AND instruction and side effects.
+****************************************************************************/
+u32 and_long(u32 d, u32 s)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d & s;
+ no_carry_long_side_eff(res);
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the CMP instruction and side effects.
+****************************************************************************/
+u8 cmp_byte(u8 d, u8 s)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d - s;
+ set_szp_flags_8((u8)res);
+ calc_borrow_chain(8, d, s, res, 1);
+
+ return d;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the CMP instruction and side effects.
+****************************************************************************/
+u16 cmp_word(u16 d, u16 s)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d - s;
+ set_szp_flags_16((u16)res);
+ calc_borrow_chain(16, d, s, res, 1);
+
+ return d;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the CMP instruction and side effects.
+****************************************************************************/
+u32 cmp_long(u32 d, u32 s)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d - s;
+ set_szp_flags_32(res);
+ calc_borrow_chain(32, d, s, res, 1);
+
+ return d;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the DAA instruction and side effects.
+****************************************************************************/
+u8 daa_byte(u8 d)
+{
+ u32 res = d;
+ if ((d & 0xf) > 9 || ACCESS_FLAG(F_AF)) {
+ res += 6;
+ SET_FLAG(F_AF);
+ }
+ if (res > 0x9F || ACCESS_FLAG(F_CF)) {
+ res += 0x60;
+ SET_FLAG(F_CF);
+ }
+ set_szp_flags_8((u8)res);
+ return (u8)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the DAS instruction and side effects.
+****************************************************************************/
+u8 das_byte(u8 d)
+{
+ if ((d & 0xf) > 9 || ACCESS_FLAG(F_AF)) {
+ d -= 6;
+ SET_FLAG(F_AF);
+ }
+ if (d > 0x9F || ACCESS_FLAG(F_CF)) {
+ d -= 0x60;
+ SET_FLAG(F_CF);
+ }
+ set_szp_flags_8(d);
+ return d;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the DEC instruction and side effects.
+****************************************************************************/
+u8 dec_byte(u8 d)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d - 1;
+ set_szp_flags_8((u8)res);
+ calc_borrow_chain(8, d, 1, res, 0);
+
+ return (u8)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the DEC instruction and side effects.
+****************************************************************************/
+u16 dec_word(u16 d)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d - 1;
+ set_szp_flags_16((u16)res);
+ calc_borrow_chain(16, d, 1, res, 0);
+
+ return (u16)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the DEC instruction and side effects.
+****************************************************************************/
+u32 dec_long(u32 d)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d - 1;
+
+ set_szp_flags_32(res);
+ calc_borrow_chain(32, d, 1, res, 0);
+
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the INC instruction and side effects.
+****************************************************************************/
+u8 inc_byte(u8 d)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d + 1;
+ set_szp_flags_8((u8)res);
+ calc_carry_chain(8, d, 1, res, 0);
+
+ return (u8)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the INC instruction and side effects.
+****************************************************************************/
+u16 inc_word(u16 d)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d + 1;
+ set_szp_flags_16((u16)res);
+ calc_carry_chain(16, d, 1, res, 0);
+
+ return (u16)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the INC instruction and side effects.
+****************************************************************************/
+u32 inc_long(u32 d)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d + 1;
+ set_szp_flags_32(res);
+ calc_carry_chain(32, d, 1, res, 0);
+
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the OR instruction and side effects.
+****************************************************************************/
+u8 or_byte(u8 d, u8 s)
+{
+ u8 res; /* all operands in native machine order */
+
+ res = d | s;
+ no_carry_byte_side_eff(res);
+
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the OR instruction and side effects.
+****************************************************************************/
+u16 or_word(u16 d, u16 s)
+{
+ u16 res; /* all operands in native machine order */
+
+ res = d | s;
+ no_carry_word_side_eff(res);
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the OR instruction and side effects.
+****************************************************************************/
+u32 or_long(u32 d, u32 s)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d | s;
+ no_carry_long_side_eff(res);
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the OR instruction and side effects.
+****************************************************************************/
+u8 neg_byte(u8 s)
+{
+ u8 res;
+
+ CONDITIONAL_SET_FLAG(s != 0, F_CF);
+ res = (u8)-s;
+ set_szp_flags_8(res);
+ calc_borrow_chain(8, 0, s, res, 0);
+
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the OR instruction and side effects.
+****************************************************************************/
+u16 neg_word(u16 s)
+{
+ u16 res;
+
+ CONDITIONAL_SET_FLAG(s != 0, F_CF);
+ res = (u16)-s;
+ set_szp_flags_16((u16)res);
+ calc_borrow_chain(16, 0, s, res, 0);
+
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the OR instruction and side effects.
+****************************************************************************/
+u32 neg_long(u32 s)
+{
+ u32 res;
+
+ CONDITIONAL_SET_FLAG(s != 0, F_CF);
+ res = (u32)-s;
+ set_szp_flags_32(res);
+ calc_borrow_chain(32, 0, s, res, 0);
+
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the NOT instruction and side effects.
+****************************************************************************/
+u8 not_byte(u8 s)
+{
+ return ~s;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the NOT instruction and side effects.
+****************************************************************************/
+u16 not_word(u16 s)
+{
+ return ~s;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the NOT instruction and side effects.
+****************************************************************************/
+u32 not_long(u32 s)
+{
+ return ~s;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the RCL instruction and side effects.
+****************************************************************************/
+u8 rcl_byte(u8 d, u8 s)
+{
+ unsigned int res, cnt, mask, cf;
+
+ /* s is the rotate distance. It varies from 0 - 8. */
+ /* have
+
+ CF B_7 B_6 B_5 B_4 B_3 B_2 B_1 B_0
+
+ want to rotate through the carry by "s" bits. We could
+ loop, but that's inefficient. So the width is 9,
+ and we split into three parts:
+
+ The new carry flag (was B_n)
+ the stuff in B_n-1 .. B_0
+ the stuff in B_7 .. B_n+1
+
+ The new rotate is done mod 9, and given this,
+ for a rotation of n bits (mod 9) the new carry flag is
+ then located n bits from the MSB. The low part is
+ then shifted up cnt bits, and the high part is or'd
+ in. Using CAPS for new values, and lowercase for the
+ original values, this can be expressed as:
+
+ IF n > 0
+ 1) CF <- b_(8-n)
+ 2) B_(7) .. B_(n) <- b_(8-(n+1)) .. b_0
+ 3) B_(n-1) <- cf
+ 4) B_(n-2) .. B_0 <- b_7 .. b_(8-(n-1))
+ */
+ res = d;
+ if ((cnt = s % 9) != 0) {
+ /* extract the new CARRY FLAG. */
+ /* CF <- b_(8-n) */
+ cf = (d >> (8 - cnt)) & 0x1;
+
+ /* get the low stuff which rotated
+ into the range B_7 .. B_cnt */
+ /* B_(7) .. B_(n) <- b_(8-(n+1)) .. b_0 */
+ /* note that the right hand side done by the mask */
+ res = (d << cnt) & 0xff;
+
+ /* now the high stuff which rotated around
+ into the positions B_cnt-2 .. B_0 */
+ /* B_(n-2) .. B_0 <- b_7 .. b_(8-(n-1)) */
+ /* shift it downward, 7-(n-2) = 9-n positions.
+ and mask off the result before or'ing in.
+ */
+ mask = (1 << (cnt - 1)) - 1;
+ res |= (d >> (9 - cnt)) & mask;
+
+ /* if the carry flag was set, or it in. */
+ if (ACCESS_FLAG(F_CF)) { /* carry flag is set */
+ /* B_(n-1) <- cf */
+ res |= 1 << (cnt - 1);
+ }
+ /* set the new carry flag, based on the variable "cf" */
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ /* OVERFLOW is set *IFF* cnt==1, then it is the
+ xor of CF and the most significant bit. Blecck. */
+ /* parenthesized this expression since it appears to
+ be causing OF to be misset */
+ CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 6) & 0x2)),
+ F_OF);
+
+ }
+ return (u8)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the RCL instruction and side effects.
+****************************************************************************/
+u16 rcl_word(u16 d, u8 s)
+{
+ unsigned int res, cnt, mask, cf;
+
+ res = d;
+ if ((cnt = s % 17) != 0) {
+ cf = (d >> (16 - cnt)) & 0x1;
+ res = (d << cnt) & 0xffff;
+ mask = (1 << (cnt - 1)) - 1;
+ res |= (d >> (17 - cnt)) & mask;
+ if (ACCESS_FLAG(F_CF)) {
+ res |= 1 << (cnt - 1);
+ }
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 14) & 0x2)),
+ F_OF);
+ }
+ return (u16)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the RCL instruction and side effects.
+****************************************************************************/
+u32 rcl_long(u32 d, u8 s)
+{
+ u32 res, cnt, mask, cf;
+
+ res = d;
+ if ((cnt = s % 33) != 0) {
+ cf = (d >> (32 - cnt)) & 0x1;
+ res = (d << cnt) & 0xffffffff;
+ mask = (1 << (cnt - 1)) - 1;
+ res |= (d >> (33 - cnt)) & mask;
+ if (ACCESS_FLAG(F_CF)) { /* carry flag is set */
+ res |= 1 << (cnt - 1);
+ }
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ CONDITIONAL_SET_FLAG(cnt == 1 && XOR2(cf + ((res >> 30) & 0x2)),
+ F_OF);
+ }
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the RCR instruction and side effects.
+****************************************************************************/
+u8 rcr_byte(u8 d, u8 s)
+{
+ u32 res, cnt;
+ u32 mask, cf, ocf = 0;
+
+ /* rotate right through carry */
+ /*
+ s is the rotate distance. It varies from 0 - 8.
+ d is the byte object rotated.
+
+ have
+
+ CF B_7 B_6 B_5 B_4 B_3 B_2 B_1 B_0
+
+ The new rotate is done mod 9, and given this,
+ for a rotation of n bits (mod 9) the new carry flag is
+ then located n bits from the LSB. The low part is
+ then shifted up cnt bits, and the high part is or'd
+ in. Using CAPS for new values, and lowercase for the
+ original values, this can be expressed as:
+
+ IF n > 0
+ 1) CF <- b_(n-1)
+ 2) B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n)
+ 3) B_(8-n) <- cf
+ 4) B_(7) .. B_(8-(n-1)) <- b_(n-2) .. b_(0)
+ */
+ res = d;
+ if ((cnt = s % 9) != 0) {
+ /* extract the new CARRY FLAG. */
+ /* CF <- b_(n-1) */
+ if (cnt == 1) {
+ cf = d & 0x1;
+ /* note hackery here. Access_flag(..) evaluates to either
+ 0 if flag not set
+ non-zero if flag is set.
+ doing access_flag(..) != 0 casts that into either
+ 0..1 in any representation of the flags register
+ (i.e. packed bit array or unpacked.)
+ */
+ ocf = ACCESS_FLAG(F_CF) != 0;
+ } else
+ cf = (d >> (cnt - 1)) & 0x1;
+
+ /* B_(8-(n+1)) .. B_(0) <- b_(7) .. b_n */
+ /* note that the right hand side done by the mask
+ This is effectively done by shifting the
+ object to the right. The result must be masked,
+ in case the object came in and was treated
+ as a negative number. Needed??? */
+
+ mask = (1 << (8 - cnt)) - 1;
+ res = (d >> cnt) & mask;
+
+ /* now the high stuff which rotated around
+ into the positions B_cnt-2 .. B_0 */
+ /* B_(7) .. B_(8-(n-1)) <- b_(n-2) .. b_(0) */
+ /* shift it downward, 7-(n-2) = 9-n positions.
+ and mask off the result before or'ing in.
+ */
+ res |= (d << (9 - cnt));
+
+ /* if the carry flag was set, or it in. */
+ if (ACCESS_FLAG(F_CF)) { /* carry flag is set */
+ /* B_(8-n) <- cf */
+ res |= 1 << (8 - cnt);
+ }
+ /* set the new carry flag, based on the variable "cf" */
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ /* OVERFLOW is set *IFF* cnt==1, then it is the
+ xor of CF and the most significant bit. Blecck. */
+ /* parenthesized... */
+ if (cnt == 1) {
+ CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 6) & 0x2)),
+ F_OF);
+ }
+ }
+ return (u8)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the RCR instruction and side effects.
+****************************************************************************/
+u16 rcr_word(u16 d, u8 s)
+{
+ u32 res, cnt;
+ u32 mask, cf, ocf = 0;
+
+ /* rotate right through carry */
+ res = d;
+ if ((cnt = s % 17) != 0) {
+ if (cnt == 1) {
+ cf = d & 0x1;
+ ocf = ACCESS_FLAG(F_CF) != 0;
+ } else
+ cf = (d >> (cnt - 1)) & 0x1;
+ mask = (1 << (16 - cnt)) - 1;
+ res = (d >> cnt) & mask;
+ res |= (d << (17 - cnt));
+ if (ACCESS_FLAG(F_CF)) {
+ res |= 1 << (16 - cnt);
+ }
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ if (cnt == 1) {
+ CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 14) & 0x2)),
+ F_OF);
+ }
+ }
+ return (u16)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the RCR instruction and side effects.
+****************************************************************************/
+u32 rcr_long(u32 d, u8 s)
+{
+ u32 res, cnt;
+ u32 mask, cf, ocf = 0;
+
+ /* rotate right through carry */
+ res = d;
+ if ((cnt = s % 33) != 0) {
+ if (cnt == 1) {
+ cf = d & 0x1;
+ ocf = ACCESS_FLAG(F_CF) != 0;
+ } else
+ cf = (d >> (cnt - 1)) & 0x1;
+ mask = (1 << (32 - cnt)) - 1;
+ res = (d >> cnt) & mask;
+ if (cnt != 1)
+ res |= (d << (33 - cnt));
+ if (ACCESS_FLAG(F_CF)) { /* carry flag is set */
+ res |= 1 << (32 - cnt);
+ }
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ if (cnt == 1) {
+ CONDITIONAL_SET_FLAG(XOR2(ocf + ((d >> 30) & 0x2)),
+ F_OF);
+ }
+ }
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the ROL instruction and side effects.
+****************************************************************************/
+u8 rol_byte(u8 d, u8 s)
+{
+ unsigned int res, cnt, mask;
+
+ /* rotate left */
+ /*
+ s is the rotate distance. It varies from 0 - 8.
+ d is the byte object rotated.
+
+ have
+
+ CF B_7 ... B_0
+
+ The new rotate is done mod 8.
+ Much simpler than the "rcl" or "rcr" operations.
+
+ IF n > 0
+ 1) B_(7) .. B_(n) <- b_(8-(n+1)) .. b_(0)
+ 2) B_(n-1) .. B_(0) <- b_(7) .. b_(8-n)
+ */
+ res = d;
+ if ((cnt = s % 8) != 0) {
+ /* B_(7) .. B_(n) <- b_(8-(n+1)) .. b_(0) */
+ res = (d << cnt);
+
+ /* B_(n-1) .. B_(0) <- b_(7) .. b_(8-n) */
+ mask = (1 << cnt) - 1;
+ res |= (d >> (8 - cnt)) & mask;
+
+ /* set the new carry flag, Note that it is the low order
+ bit of the result!!! */
+ CONDITIONAL_SET_FLAG(res & 0x1, F_CF);
+ /* OVERFLOW is set *IFF* s==1, then it is the
+ xor of CF and the most significant bit. Blecck. */
+ CONDITIONAL_SET_FLAG(s == 1 &&
+ XOR2((res & 0x1) + ((res >> 6) & 0x2)),
+ F_OF);
+ } if (s != 0) {
+ /* set the new carry flag, Note that it is the low order
+ bit of the result!!! */
+ CONDITIONAL_SET_FLAG(res & 0x1, F_CF);
+ }
+ return (u8)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the ROL instruction and side effects.
+****************************************************************************/
+u16 rol_word(u16 d, u8 s)
+{
+ unsigned int res, cnt, mask;
+
+ res = d;
+ if ((cnt = s % 16) != 0) {
+ res = (d << cnt);
+ mask = (1 << cnt) - 1;
+ res |= (d >> (16 - cnt)) & mask;
+ CONDITIONAL_SET_FLAG(res & 0x1, F_CF);
+ CONDITIONAL_SET_FLAG(s == 1 &&
+ XOR2((res & 0x1) + ((res >> 14) & 0x2)),
+ F_OF);
+ } if (s != 0) {
+ /* set the new carry flag, Note that it is the low order
+ bit of the result!!! */
+ CONDITIONAL_SET_FLAG(res & 0x1, F_CF);
+ }
+ return (u16)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the ROL instruction and side effects.
+****************************************************************************/
+u32 rol_long(u32 d, u8 s)
+{
+ u32 res, cnt, mask;
+
+ res = d;
+ if ((cnt = s % 32) != 0) {
+ res = (d << cnt);
+ mask = (1 << cnt) - 1;
+ res |= (d >> (32 - cnt)) & mask;
+ CONDITIONAL_SET_FLAG(res & 0x1, F_CF);
+ CONDITIONAL_SET_FLAG(s == 1 &&
+ XOR2((res & 0x1) + ((res >> 30) & 0x2)),
+ F_OF);
+ } if (s != 0) {
+ /* set the new carry flag, Note that it is the low order
+ bit of the result!!! */
+ CONDITIONAL_SET_FLAG(res & 0x1, F_CF);
+ }
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the ROR instruction and side effects.
+****************************************************************************/
+u8 ror_byte(u8 d, u8 s)
+{
+ unsigned int res, cnt, mask;
+
+ /* rotate right */
+ /*
+ s is the rotate distance. It varies from 0 - 8.
+ d is the byte object rotated.
+
+ have
+
+ B_7 ... B_0
+
+ The rotate is done mod 8.
+
+ IF n > 0
+ 1) B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n)
+ 2) B_(7) .. B_(8-n) <- b_(n-1) .. b_(0)
+ */
+ res = d;
+ if ((cnt = s % 8) != 0) { /* not a typo, do nada if cnt==0 */
+ /* B_(7) .. B_(8-n) <- b_(n-1) .. b_(0) */
+ res = (d << (8 - cnt));
+
+ /* B_(8-(n+1)) .. B_(0) <- b_(7) .. b_(n) */
+ mask = (1 << (8 - cnt)) - 1;
+ res |= (d >> (cnt)) & mask;
+
+ /* set the new carry flag, Note that it is the low order
+ bit of the result!!! */
+ CONDITIONAL_SET_FLAG(res & 0x80, F_CF);
+ /* OVERFLOW is set *IFF* s==1, then it is the
+ xor of the two most significant bits. Blecck. */
+ CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 6), F_OF);
+ } else if (s != 0) {
+ /* set the new carry flag, Note that it is the low order
+ bit of the result!!! */
+ CONDITIONAL_SET_FLAG(res & 0x80, F_CF);
+ }
+ return (u8)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the ROR instruction and side effects.
+****************************************************************************/
+u16 ror_word(u16 d, u8 s)
+{
+ unsigned int res, cnt, mask;
+
+ res = d;
+ if ((cnt = s % 16) != 0) {
+ res = (d << (16 - cnt));
+ mask = (1 << (16 - cnt)) - 1;
+ res |= (d >> (cnt)) & mask;
+ CONDITIONAL_SET_FLAG(res & 0x8000, F_CF);
+ CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 14), F_OF);
+ } else if (s != 0) {
+ /* set the new carry flag, Note that it is the low order
+ bit of the result!!! */
+ CONDITIONAL_SET_FLAG(res & 0x8000, F_CF);
+ }
+ return (u16)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the ROR instruction and side effects.
+****************************************************************************/
+u32 ror_long(u32 d, u8 s)
+{
+ u32 res, cnt, mask;
+
+ res = d;
+ if ((cnt = s % 32) != 0) {
+ res = (d << (32 - cnt));
+ mask = (1 << (32 - cnt)) - 1;
+ res |= (d >> (cnt)) & mask;
+ CONDITIONAL_SET_FLAG(res & 0x80000000, F_CF);
+ CONDITIONAL_SET_FLAG(s == 1 && XOR2(res >> 30), F_OF);
+ } else if (s != 0) {
+ /* set the new carry flag, Note that it is the low order
+ bit of the result!!! */
+ CONDITIONAL_SET_FLAG(res & 0x80000000, F_CF);
+ }
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SHL instruction and side effects.
+****************************************************************************/
+u8 shl_byte(u8 d, u8 s)
+{
+ unsigned int cnt, res, cf;
+
+ if (s < 8) {
+ cnt = s % 8;
+
+ /* last bit shifted out goes into carry flag */
+ if (cnt > 0) {
+ res = d << cnt;
+ cf = d & (1 << (8 - cnt));
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ set_szp_flags_8((u8)res);
+ } else {
+ res = (u8) d;
+ }
+
+ if (cnt == 1) {
+ /* Needs simplification. */
+ CONDITIONAL_SET_FLAG(
+ (((res & 0x80) == 0x80) ^
+ (ACCESS_FLAG(F_CF) != 0)),
+ /* was (M.x86.R_FLG&F_CF)==F_CF)), */
+ F_OF);
+ } else {
+ CLEAR_FLAG(F_OF);
+ }
+ } else {
+ res = 0;
+ CONDITIONAL_SET_FLAG((d << (s-1)) & 0x80, F_CF);
+ CLEAR_FLAG(F_OF);
+ CLEAR_FLAG(F_SF);
+ SET_FLAG(F_PF);
+ SET_FLAG(F_ZF);
+ }
+ return (u8)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SHL instruction and side effects.
+****************************************************************************/
+u16 shl_word(u16 d, u8 s)
+{
+ unsigned int cnt, res, cf;
+
+ if (s < 16) {
+ cnt = s % 16;
+ if (cnt > 0) {
+ res = d << cnt;
+ cf = d & (1 << (16 - cnt));
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ set_szp_flags_16((u16)res);
+ } else {
+ res = (u16) d;
+ }
+
+ if (cnt == 1) {
+ CONDITIONAL_SET_FLAG(
+ (((res & 0x8000) == 0x8000) ^
+ (ACCESS_FLAG(F_CF) != 0)),
+ F_OF);
+ } else {
+ CLEAR_FLAG(F_OF);
+ }
+ } else {
+ res = 0;
+ CONDITIONAL_SET_FLAG((d << (s-1)) & 0x8000, F_CF);
+ CLEAR_FLAG(F_OF);
+ CLEAR_FLAG(F_SF);
+ SET_FLAG(F_PF);
+ SET_FLAG(F_ZF);
+ }
+ return (u16)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SHL instruction and side effects.
+****************************************************************************/
+u32 shl_long(u32 d, u8 s)
+{
+ unsigned int cnt, res, cf;
+
+ if (s < 32) {
+ cnt = s % 32;
+ if (cnt > 0) {
+ res = d << cnt;
+ cf = d & (1 << (32 - cnt));
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ set_szp_flags_32((u32)res);
+ } else {
+ res = d;
+ }
+ if (cnt == 1) {
+ CONDITIONAL_SET_FLAG((((res & 0x80000000) == 0x80000000) ^
+ (ACCESS_FLAG(F_CF) != 0)), F_OF);
+ } else {
+ CLEAR_FLAG(F_OF);
+ }
+ } else {
+ res = 0;
+ CONDITIONAL_SET_FLAG((d << (s-1)) & 0x80000000, F_CF);
+ CLEAR_FLAG(F_OF);
+ CLEAR_FLAG(F_SF);
+ SET_FLAG(F_PF);
+ SET_FLAG(F_ZF);
+ }
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SHR instruction and side effects.
+****************************************************************************/
+u8 shr_byte(u8 d, u8 s)
+{
+ unsigned int cnt, res, cf;
+
+ if (s < 8) {
+ cnt = s % 8;
+ if (cnt > 0) {
+ cf = d & (1 << (cnt - 1));
+ res = d >> cnt;
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ set_szp_flags_8((u8)res);
+ } else {
+ res = (u8) d;
+ }
+
+ if (cnt == 1) {
+ CONDITIONAL_SET_FLAG(XOR2(res >> 6), F_OF);
+ } else {
+ CLEAR_FLAG(F_OF);
+ }
+ } else {
+ res = 0;
+ CONDITIONAL_SET_FLAG((d >> (s-1)) & 0x1, F_CF);
+ CLEAR_FLAG(F_OF);
+ CLEAR_FLAG(F_SF);
+ SET_FLAG(F_PF);
+ SET_FLAG(F_ZF);
+ }
+ return (u8)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SHR instruction and side effects.
+****************************************************************************/
+u16 shr_word(u16 d, u8 s)
+{
+ unsigned int cnt, res, cf;
+
+ if (s < 16) {
+ cnt = s % 16;
+ if (cnt > 0) {
+ cf = d & (1 << (cnt - 1));
+ res = d >> cnt;
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ set_szp_flags_16((u16)res);
+ } else {
+ res = d;
+ }
+
+ if (cnt == 1) {
+ CONDITIONAL_SET_FLAG(XOR2(res >> 14), F_OF);
+ } else {
+ CLEAR_FLAG(F_OF);
+ }
+ } else {
+ res = 0;
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ SET_FLAG(F_ZF);
+ CLEAR_FLAG(F_SF);
+ CLEAR_FLAG(F_PF);
+ }
+ return (u16)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SHR instruction and side effects.
+****************************************************************************/
+u32 shr_long(u32 d, u8 s)
+{
+ unsigned int cnt, res, cf;
+
+ if (s < 32) {
+ cnt = s % 32;
+ if (cnt > 0) {
+ cf = d & (1 << (cnt - 1));
+ res = d >> cnt;
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ set_szp_flags_32((u32)res);
+ } else {
+ res = d;
+ }
+ if (cnt == 1) {
+ CONDITIONAL_SET_FLAG(XOR2(res >> 30), F_OF);
+ } else {
+ CLEAR_FLAG(F_OF);
+ }
+ } else {
+ res = 0;
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ SET_FLAG(F_ZF);
+ CLEAR_FLAG(F_SF);
+ CLEAR_FLAG(F_PF);
+ }
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SAR instruction and side effects.
+****************************************************************************/
+u8 sar_byte(u8 d, u8 s)
+{
+ unsigned int cnt, res, cf, mask, sf;
+
+ res = d;
+ sf = d & 0x80;
+ cnt = s % 8;
+ if (cnt > 0 && cnt < 8) {
+ mask = (1 << (8 - cnt)) - 1;
+ cf = d & (1 << (cnt - 1));
+ res = (d >> cnt) & mask;
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ if (sf) {
+ res |= ~mask;
+ }
+ set_szp_flags_8((u8)res);
+ } else if (cnt >= 8) {
+ if (sf) {
+ res = 0xff;
+ SET_FLAG(F_CF);
+ CLEAR_FLAG(F_ZF);
+ SET_FLAG(F_SF);
+ SET_FLAG(F_PF);
+ } else {
+ res = 0;
+ CLEAR_FLAG(F_CF);
+ SET_FLAG(F_ZF);
+ CLEAR_FLAG(F_SF);
+ CLEAR_FLAG(F_PF);
+ }
+ }
+ return (u8)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SAR instruction and side effects.
+****************************************************************************/
+u16 sar_word(u16 d, u8 s)
+{
+ unsigned int cnt, res, cf, mask, sf;
+
+ sf = d & 0x8000;
+ cnt = s % 16;
+ res = d;
+ if (cnt > 0 && cnt < 16) {
+ mask = (1 << (16 - cnt)) - 1;
+ cf = d & (1 << (cnt - 1));
+ res = (d >> cnt) & mask;
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ if (sf) {
+ res |= ~mask;
+ }
+ set_szp_flags_16((u16)res);
+ } else if (cnt >= 16) {
+ if (sf) {
+ res = 0xffff;
+ SET_FLAG(F_CF);
+ CLEAR_FLAG(F_ZF);
+ SET_FLAG(F_SF);
+ SET_FLAG(F_PF);
+ } else {
+ res = 0;
+ CLEAR_FLAG(F_CF);
+ SET_FLAG(F_ZF);
+ CLEAR_FLAG(F_SF);
+ CLEAR_FLAG(F_PF);
+ }
+ }
+ return (u16)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SAR instruction and side effects.
+****************************************************************************/
+u32 sar_long(u32 d, u8 s)
+{
+ u32 cnt, res, cf, mask, sf;
+
+ sf = d & 0x80000000;
+ cnt = s % 32;
+ res = d;
+ if (cnt > 0 && cnt < 32) {
+ mask = (1 << (32 - cnt)) - 1;
+ cf = d & (1 << (cnt - 1));
+ res = (d >> cnt) & mask;
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ if (sf) {
+ res |= ~mask;
+ }
+ set_szp_flags_32(res);
+ } else if (cnt >= 32) {
+ if (sf) {
+ res = 0xffffffff;
+ SET_FLAG(F_CF);
+ CLEAR_FLAG(F_ZF);
+ SET_FLAG(F_SF);
+ SET_FLAG(F_PF);
+ } else {
+ res = 0;
+ CLEAR_FLAG(F_CF);
+ SET_FLAG(F_ZF);
+ CLEAR_FLAG(F_SF);
+ CLEAR_FLAG(F_PF);
+ }
+ }
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SHLD instruction and side effects.
+****************************************************************************/
+u16 shld_word (u16 d, u16 fill, u8 s)
+{
+ unsigned int cnt, res, cf;
+
+ if (s < 16) {
+ cnt = s % 16;
+ if (cnt > 0) {
+ res = (d << cnt) | (fill >> (16-cnt));
+ cf = d & (1 << (16 - cnt));
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ set_szp_flags_16((u16)res);
+ } else {
+ res = d;
+ }
+ if (cnt == 1) {
+ CONDITIONAL_SET_FLAG((((res & 0x8000) == 0x8000) ^
+ (ACCESS_FLAG(F_CF) != 0)), F_OF);
+ } else {
+ CLEAR_FLAG(F_OF);
+ }
+ } else {
+ res = 0;
+ CONDITIONAL_SET_FLAG((d << (s-1)) & 0x8000, F_CF);
+ CLEAR_FLAG(F_OF);
+ CLEAR_FLAG(F_SF);
+ SET_FLAG(F_PF);
+ SET_FLAG(F_ZF);
+ }
+ return (u16)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SHLD instruction and side effects.
+****************************************************************************/
+u32 shld_long (u32 d, u32 fill, u8 s)
+{
+ unsigned int cnt, res, cf;
+
+ if (s < 32) {
+ cnt = s % 32;
+ if (cnt > 0) {
+ res = (d << cnt) | (fill >> (32-cnt));
+ cf = d & (1 << (32 - cnt));
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ set_szp_flags_32((u32)res);
+ } else {
+ res = d;
+ }
+ if (cnt == 1) {
+ CONDITIONAL_SET_FLAG((((res & 0x80000000) == 0x80000000) ^
+ (ACCESS_FLAG(F_CF) != 0)), F_OF);
+ } else {
+ CLEAR_FLAG(F_OF);
+ }
+ } else {
+ res = 0;
+ CONDITIONAL_SET_FLAG((d << (s-1)) & 0x80000000, F_CF);
+ CLEAR_FLAG(F_OF);
+ CLEAR_FLAG(F_SF);
+ SET_FLAG(F_PF);
+ SET_FLAG(F_ZF);
+ }
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SHRD instruction and side effects.
+****************************************************************************/
+u16 shrd_word (u16 d, u16 fill, u8 s)
+{
+ unsigned int cnt, res, cf;
+
+ if (s < 16) {
+ cnt = s % 16;
+ if (cnt > 0) {
+ cf = d & (1 << (cnt - 1));
+ res = (d >> cnt) | (fill << (16 - cnt));
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ set_szp_flags_16((u16)res);
+ } else {
+ res = d;
+ }
+
+ if (cnt == 1) {
+ CONDITIONAL_SET_FLAG(XOR2(res >> 14), F_OF);
+ } else {
+ CLEAR_FLAG(F_OF);
+ }
+ } else {
+ res = 0;
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ SET_FLAG(F_ZF);
+ CLEAR_FLAG(F_SF);
+ CLEAR_FLAG(F_PF);
+ }
+ return (u16)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SHRD instruction and side effects.
+****************************************************************************/
+u32 shrd_long (u32 d, u32 fill, u8 s)
+{
+ unsigned int cnt, res, cf;
+
+ if (s < 32) {
+ cnt = s % 32;
+ if (cnt > 0) {
+ cf = d & (1 << (cnt - 1));
+ res = (d >> cnt) | (fill << (32 - cnt));
+ CONDITIONAL_SET_FLAG(cf, F_CF);
+ set_szp_flags_32((u32)res);
+ } else {
+ res = d;
+ }
+ if (cnt == 1) {
+ CONDITIONAL_SET_FLAG(XOR2(res >> 30), F_OF);
+ } else {
+ CLEAR_FLAG(F_OF);
+ }
+ } else {
+ res = 0;
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ SET_FLAG(F_ZF);
+ CLEAR_FLAG(F_SF);
+ CLEAR_FLAG(F_PF);
+ }
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SBB instruction and side effects.
+****************************************************************************/
+u8 sbb_byte(u8 d, u8 s)
+{
+ u32 res; /* all operands in native machine order */
+ u32 bc;
+
+ if (ACCESS_FLAG(F_CF))
+ res = d - s - 1;
+ else
+ res = d - s;
+ set_szp_flags_8((u8)res);
+
+ /* calculate the borrow chain. See note at top */
+ bc = (res & (~d | s)) | (~d & s);
+ CONDITIONAL_SET_FLAG(bc & 0x80, F_CF);
+ CONDITIONAL_SET_FLAG(XOR2(bc >> 6), F_OF);
+ CONDITIONAL_SET_FLAG(bc & 0x8, F_AF);
+ return (u8)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SBB instruction and side effects.
+****************************************************************************/
+u16 sbb_word(u16 d, u16 s)
+{
+ u32 res; /* all operands in native machine order */
+ u32 bc;
+
+ if (ACCESS_FLAG(F_CF))
+ res = d - s - 1;
+ else
+ res = d - s;
+ set_szp_flags_16((u16)res);
+
+ /* calculate the borrow chain. See note at top */
+ bc = (res & (~d | s)) | (~d & s);
+ CONDITIONAL_SET_FLAG(bc & 0x8000, F_CF);
+ CONDITIONAL_SET_FLAG(XOR2(bc >> 14), F_OF);
+ CONDITIONAL_SET_FLAG(bc & 0x8, F_AF);
+ return (u16)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SBB instruction and side effects.
+****************************************************************************/
+u32 sbb_long(u32 d, u32 s)
+{
+ u32 res; /* all operands in native machine order */
+ u32 bc;
+
+ if (ACCESS_FLAG(F_CF))
+ res = d - s - 1;
+ else
+ res = d - s;
+
+ set_szp_flags_32(res);
+
+ /* calculate the borrow chain. See note at top */
+ bc = (res & (~d | s)) | (~d & s);
+ CONDITIONAL_SET_FLAG(bc & 0x80000000, F_CF);
+ CONDITIONAL_SET_FLAG(XOR2(bc >> 30), F_OF);
+ CONDITIONAL_SET_FLAG(bc & 0x8, F_AF);
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SUB instruction and side effects.
+****************************************************************************/
+u8 sub_byte(u8 d, u8 s)
+{
+ u32 res; /* all operands in native machine order */
+ u32 bc;
+
+ res = d - s;
+ set_szp_flags_8((u8)res);
+
+ /* calculate the borrow chain. See note at top */
+ bc = (res & (~d | s)) | (~d & s);
+ CONDITIONAL_SET_FLAG(bc & 0x80, F_CF);
+ CONDITIONAL_SET_FLAG(XOR2(bc >> 6), F_OF);
+ CONDITIONAL_SET_FLAG(bc & 0x8, F_AF);
+ return (u8)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SUB instruction and side effects.
+****************************************************************************/
+u16 sub_word(u16 d, u16 s)
+{
+ u32 res; /* all operands in native machine order */
+ u32 bc;
+
+ res = d - s;
+ set_szp_flags_16((u16)res);
+
+ /* calculate the borrow chain. See note at top */
+ bc = (res & (~d | s)) | (~d & s);
+ CONDITIONAL_SET_FLAG(bc & 0x8000, F_CF);
+ CONDITIONAL_SET_FLAG(XOR2(bc >> 14), F_OF);
+ CONDITIONAL_SET_FLAG(bc & 0x8, F_AF);
+ return (u16)res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the SUB instruction and side effects.
+****************************************************************************/
+u32 sub_long(u32 d, u32 s)
+{
+ u32 res; /* all operands in native machine order */
+ u32 bc;
+
+ res = d - s;
+ set_szp_flags_32(res);
+
+ /* calculate the borrow chain. See note at top */
+ bc = (res & (~d | s)) | (~d & s);
+ CONDITIONAL_SET_FLAG(bc & 0x80000000, F_CF);
+ CONDITIONAL_SET_FLAG(XOR2(bc >> 30), F_OF);
+ CONDITIONAL_SET_FLAG(bc & 0x8, F_AF);
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the TEST instruction and side effects.
+****************************************************************************/
+void test_byte(u8 d, u8 s)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d & s;
+
+ CLEAR_FLAG(F_OF);
+ set_szp_flags_8((u8)res);
+ /* AF == dont care */
+ CLEAR_FLAG(F_CF);
+}
+
+/****************************************************************************
+REMARKS:
+Implements the TEST instruction and side effects.
+****************************************************************************/
+void test_word(u16 d, u16 s)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d & s;
+
+ CLEAR_FLAG(F_OF);
+ set_szp_flags_16((u16)res);
+ /* AF == dont care */
+ CLEAR_FLAG(F_CF);
+}
+
+/****************************************************************************
+REMARKS:
+Implements the TEST instruction and side effects.
+****************************************************************************/
+void test_long(u32 d, u32 s)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d & s;
+
+ CLEAR_FLAG(F_OF);
+ set_szp_flags_32(res);
+ /* AF == dont care */
+ CLEAR_FLAG(F_CF);
+}
+
+/****************************************************************************
+REMARKS:
+Implements the XOR instruction and side effects.
+****************************************************************************/
+u8 xor_byte(u8 d, u8 s)
+{
+ u8 res; /* all operands in native machine order */
+
+ res = d ^ s;
+ no_carry_byte_side_eff(res);
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the XOR instruction and side effects.
+****************************************************************************/
+u16 xor_word(u16 d, u16 s)
+{
+ u16 res; /* all operands in native machine order */
+
+ res = d ^ s;
+ no_carry_word_side_eff(res);
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the XOR instruction and side effects.
+****************************************************************************/
+u32 xor_long(u32 d, u32 s)
+{
+ u32 res; /* all operands in native machine order */
+
+ res = d ^ s;
+ no_carry_long_side_eff(res);
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the IMUL instruction and side effects.
+****************************************************************************/
+void imul_byte(u8 s)
+{
+ s16 res = (s16)((s8)M.x86.R_AL * (s8)s);
+
+ M.x86.R_AX = res;
+ if (((M.x86.R_AL & 0x80) == 0 && M.x86.R_AH == 0x00) ||
+ ((M.x86.R_AL & 0x80) != 0 && M.x86.R_AH == 0xFF)) {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ } else {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ }
+}
+
+/****************************************************************************
+REMARKS:
+Implements the IMUL instruction and side effects.
+****************************************************************************/
+void imul_word(u16 s)
+{
+ s32 res = (s16)M.x86.R_AX * (s16)s;
+
+ M.x86.R_AX = (u16)res;
+ M.x86.R_DX = (u16)(res >> 16);
+ if (((M.x86.R_AX & 0x8000) == 0 && M.x86.R_DX == 0x0000) ||
+ ((M.x86.R_AX & 0x8000) != 0 && M.x86.R_DX == 0xFFFF)) {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ } else {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ }
+}
+
+/****************************************************************************
+REMARKS:
+Implements the IMUL instruction and side effects.
+****************************************************************************/
+void imul_long_direct(u32 *res_lo, u32* res_hi,u32 d, u32 s)
+{
+#ifdef __HAS_LONG_LONG__
+ s64 res = (s64)(s32)d * (s64)(s32)s;
+
+ *res_lo = (u32)res;
+ *res_hi = (u32)(res >> 32);
+#else
+ u32 d_lo,d_hi,d_sign;
+ u32 s_lo,s_hi,s_sign;
+ u32 rlo_lo,rlo_hi,rhi_lo;
+
+ if ((d_sign = d & 0x80000000) != 0)
+ d = -d;
+ d_lo = d & 0xFFFF;
+ d_hi = d >> 16;
+ if ((s_sign = s & 0x80000000) != 0)
+ s = -s;
+ s_lo = s & 0xFFFF;
+ s_hi = s >> 16;
+ rlo_lo = d_lo * s_lo;
+ rlo_hi = (d_hi * s_lo + d_lo * s_hi) + (rlo_lo >> 16);
+ rhi_lo = d_hi * s_hi + (rlo_hi >> 16);
+ *res_lo = (rlo_hi << 16) | (rlo_lo & 0xFFFF);
+ *res_hi = rhi_lo;
+ if (d_sign != s_sign) {
+ d = ~*res_lo;
+ s = (((d & 0xFFFF) + 1) >> 16) + (d >> 16);
+ *res_lo = ~*res_lo+1;
+ *res_hi = ~*res_hi+(s >> 16);
+ }
+#endif
+}
+
+/****************************************************************************
+REMARKS:
+Implements the IMUL instruction and side effects.
+****************************************************************************/
+void imul_long(u32 s)
+{
+ imul_long_direct(&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,s);
+ if (((M.x86.R_EAX & 0x80000000) == 0 && M.x86.R_EDX == 0x00000000) ||
+ ((M.x86.R_EAX & 0x80000000) != 0 && M.x86.R_EDX == 0xFFFFFFFF)) {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ } else {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ }
+}
+
+/****************************************************************************
+REMARKS:
+Implements the MUL instruction and side effects.
+****************************************************************************/
+void mul_byte(u8 s)
+{
+ u16 res = (u16)(M.x86.R_AL * s);
+
+ M.x86.R_AX = res;
+ if (M.x86.R_AH == 0) {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ } else {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ }
+}
+
+/****************************************************************************
+REMARKS:
+Implements the MUL instruction and side effects.
+****************************************************************************/
+void mul_word(u16 s)
+{
+ u32 res = M.x86.R_AX * s;
+
+ M.x86.R_AX = (u16)res;
+ M.x86.R_DX = (u16)(res >> 16);
+ if (M.x86.R_DX == 0) {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ } else {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ }
+}
+
+/****************************************************************************
+REMARKS:
+Implements the MUL instruction and side effects.
+****************************************************************************/
+void mul_long(u32 s)
+{
+#ifdef __HAS_LONG_LONG__
+ u64 res = (u64)M.x86.R_EAX * s;
+
+ M.x86.R_EAX = (u32)res;
+ M.x86.R_EDX = (u32)(res >> 32);
+#else
+ u32 a,a_lo,a_hi;
+ u32 s_lo,s_hi;
+ u32 rlo_lo,rlo_hi,rhi_lo;
+
+ a = M.x86.R_EAX;
+ a_lo = a & 0xFFFF;
+ a_hi = a >> 16;
+ s_lo = s & 0xFFFF;
+ s_hi = s >> 16;
+ rlo_lo = a_lo * s_lo;
+ rlo_hi = (a_hi * s_lo + a_lo * s_hi) + (rlo_lo >> 16);
+ rhi_lo = a_hi * s_hi + (rlo_hi >> 16);
+ M.x86.R_EAX = (rlo_hi << 16) | (rlo_lo & 0xFFFF);
+ M.x86.R_EDX = rhi_lo;
+#endif
+ if (M.x86.R_EDX == 0) {
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_OF);
+ } else {
+ SET_FLAG(F_CF);
+ SET_FLAG(F_OF);
+ }
+}
+
+/****************************************************************************
+REMARKS:
+Implements the IDIV instruction and side effects.
+****************************************************************************/
+void idiv_byte(u8 s)
+{
+ s32 dvd, div, mod;
+
+ dvd = (s16)M.x86.R_AX;
+ if (s == 0) {
+ x86emu_intr_raise(0);
+ return;
+ }
+ div = dvd / (s8)s;
+ mod = dvd % (s8)s;
+ if (abs(div) > 0x7f) {
+ x86emu_intr_raise(0);
+ return;
+ }
+ M.x86.R_AL = (s8) div;
+ M.x86.R_AH = (s8) mod;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the IDIV instruction and side effects.
+****************************************************************************/
+void idiv_word(u16 s)
+{
+ s32 dvd, div, mod;
+
+ dvd = (((s32)M.x86.R_DX) << 16) | M.x86.R_AX;
+ if (s == 0) {
+ x86emu_intr_raise(0);
+ return;
+ }
+ div = dvd / (s16)s;
+ mod = dvd % (s16)s;
+ if (abs(div) > 0x7fff) {
+ x86emu_intr_raise(0);
+ return;
+ }
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_SF);
+ CONDITIONAL_SET_FLAG(div == 0, F_ZF);
+ set_parity_flag(mod);
+
+ M.x86.R_AX = (u16)div;
+ M.x86.R_DX = (u16)mod;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the IDIV instruction and side effects.
+****************************************************************************/
+void idiv_long(u32 s)
+{
+#ifdef __HAS_LONG_LONG__
+ s64 dvd, div, mod;
+
+ dvd = (((s64)M.x86.R_EDX) << 32) | M.x86.R_EAX;
+ if (s == 0) {
+ x86emu_intr_raise(0);
+ return;
+ }
+ div = dvd / (s32)s;
+ mod = dvd % (s32)s;
+ if (abs(div) > 0x7fffffff) {
+ x86emu_intr_raise(0);
+ return;
+ }
+#else
+ s32 div = 0, mod;
+ s32 h_dvd = M.x86.R_EDX;
+ u32 l_dvd = M.x86.R_EAX;
+ u32 abs_s = s & 0x7FFFFFFF;
+ u32 abs_h_dvd = h_dvd & 0x7FFFFFFF;
+ u32 h_s = abs_s >> 1;
+ u32 l_s = abs_s << 31;
+ int counter = 31;
+ int carry;
+
+ if (s == 0) {
+ x86emu_intr_raise(0);
+ return;
+ }
+ do {
+ div <<= 1;
+ carry = (l_dvd >= l_s) ? 0 : 1;
+
+ if (abs_h_dvd < (h_s + carry)) {
+ h_s >>= 1;
+ l_s = abs_s << (--counter);
+ continue;
+ } else {
+ abs_h_dvd -= (h_s + carry);
+ l_dvd = carry ? ((0xFFFFFFFF - l_s) + l_dvd + 1)
+ : (l_dvd - l_s);
+ h_s >>= 1;
+ l_s = abs_s << (--counter);
+ div |= 1;
+ continue;
+ }
+
+ } while (counter > -1);
+ /* overflow */
+ if (abs_h_dvd || (l_dvd > abs_s)) {
+ x86emu_intr_raise(0);
+ return;
+ }
+ /* sign */
+ div |= ((h_dvd & 0x10000000) ^ (s & 0x10000000));
+ mod = l_dvd;
+
+#endif
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_AF);
+ CLEAR_FLAG(F_SF);
+ SET_FLAG(F_ZF);
+ set_parity_flag(mod);
+
+ M.x86.R_EAX = (u32)div;
+ M.x86.R_EDX = (u32)mod;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the DIV instruction and side effects.
+****************************************************************************/
+void div_byte(u8 s)
+{
+ u32 dvd, div, mod;
+
+ dvd = M.x86.R_AX;
+ if (s == 0) {
+ x86emu_intr_raise(0);
+ return;
+ }
+ div = dvd / (u8)s;
+ mod = dvd % (u8)s;
+ if (abs(div) > 0xff) {
+ x86emu_intr_raise(0);
+ return;
+ }
+ M.x86.R_AL = (u8)div;
+ M.x86.R_AH = (u8)mod;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the DIV instruction and side effects.
+****************************************************************************/
+void div_word(u16 s)
+{
+ u32 dvd, div, mod;
+
+ dvd = (((u32)M.x86.R_DX) << 16) | M.x86.R_AX;
+ if (s == 0) {
+ x86emu_intr_raise(0);
+ return;
+ }
+ div = dvd / (u16)s;
+ mod = dvd % (u16)s;
+ if (abs(div) > 0xffff) {
+ x86emu_intr_raise(0);
+ return;
+ }
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_SF);
+ CONDITIONAL_SET_FLAG(div == 0, F_ZF);
+ set_parity_flag(mod);
+
+ M.x86.R_AX = (u16)div;
+ M.x86.R_DX = (u16)mod;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the DIV instruction and side effects.
+****************************************************************************/
+void div_long(u32 s)
+{
+#ifdef __HAS_LONG_LONG__
+ u64 dvd, div, mod;
+
+ dvd = (((u64)M.x86.R_EDX) << 32) | M.x86.R_EAX;
+ if (s == 0) {
+ x86emu_intr_raise(0);
+ return;
+ }
+ div = dvd / (u32)s;
+ mod = dvd % (u32)s;
+ if (abs(div) > 0xffffffff) {
+ x86emu_intr_raise(0);
+ return;
+ }
+#else
+ s32 div = 0, mod;
+ s32 h_dvd = M.x86.R_EDX;
+ u32 l_dvd = M.x86.R_EAX;
+
+ u32 h_s = s;
+ u32 l_s = 0;
+ int counter = 32;
+ int carry;
+
+ if (s == 0) {
+ x86emu_intr_raise(0);
+ return;
+ }
+ do {
+ div <<= 1;
+ carry = (l_dvd >= l_s) ? 0 : 1;
+
+ if (h_dvd < (h_s + carry)) {
+ h_s >>= 1;
+ l_s = s << (--counter);
+ continue;
+ } else {
+ h_dvd -= (h_s + carry);
+ l_dvd = carry ? ((0xFFFFFFFF - l_s) + l_dvd + 1)
+ : (l_dvd - l_s);
+ h_s >>= 1;
+ l_s = s << (--counter);
+ div |= 1;
+ continue;
+ }
+
+ } while (counter > -1);
+ /* overflow */
+ if (h_dvd || (l_dvd > s)) {
+ x86emu_intr_raise(0);
+ return;
+ }
+ mod = l_dvd;
+#endif
+ CLEAR_FLAG(F_CF);
+ CLEAR_FLAG(F_AF);
+ CLEAR_FLAG(F_SF);
+ SET_FLAG(F_ZF);
+ set_parity_flag(mod);
+
+ M.x86.R_EAX = (u32)div;
+ M.x86.R_EDX = (u32)mod;
+}
+
+/****************************************************************************
+REMARKS:
+Implements the IN string instruction and side effects.
+****************************************************************************/
+
+static void single_in(int size)
+{
+ if(size == 1)
+ store_data_byte_abs(M.x86.R_ES, M.x86.R_DI,(*sys_inb)(M.x86.R_DX));
+ else if (size == 2)
+ store_data_word_abs(M.x86.R_ES, M.x86.R_DI,(*sys_inw)(M.x86.R_DX));
+ else
+ store_data_long_abs(M.x86.R_ES, M.x86.R_DI,(*sys_inl)(M.x86.R_DX));
+}
+
+void ins(int size)
+{
+ int inc = size;
+
+ if (ACCESS_FLAG(F_DF)) {
+ inc = -size;
+ }
+ if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
+ /* dont care whether REPE or REPNE */
+ /* in until (E)CX is ZERO. */
+ u32 count = ((M.x86.mode & SYSMODE_32BIT_REP) ?
+ M.x86.R_ECX : M.x86.R_CX);
+ while (count--) {
+ single_in(size);
+ M.x86.R_DI += inc;
+ }
+ M.x86.R_CX = 0;
+ if (M.x86.mode & SYSMODE_32BIT_REP) {
+ M.x86.R_ECX = 0;
+ }
+ M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
+ } else {
+ single_in(size);
+ M.x86.R_DI += inc;
+ }
+}
+
+/****************************************************************************
+REMARKS:
+Implements the OUT string instruction and side effects.
+****************************************************************************/
+
+static void single_out(int size)
+{
+ if(size == 1)
+ (*sys_outb)(M.x86.R_DX,fetch_data_byte_abs(M.x86.R_ES, M.x86.R_SI));
+ else if (size == 2)
+ (*sys_outw)(M.x86.R_DX,fetch_data_word_abs(M.x86.R_ES, M.x86.R_SI));
+ else
+ (*sys_outl)(M.x86.R_DX,fetch_data_long_abs(M.x86.R_ES, M.x86.R_SI));
+}
+
+void outs(int size)
+{
+ int inc = size;
+
+ if (ACCESS_FLAG(F_DF)) {
+ inc = -size;
+ }
+ if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
+ /* dont care whether REPE or REPNE */
+ /* out until (E)CX is ZERO. */
+ u32 count = ((M.x86.mode & SYSMODE_32BIT_REP) ?
+ M.x86.R_ECX : M.x86.R_CX);
+ while (count--) {
+ single_out(size);
+ M.x86.R_SI += inc;
+ }
+ M.x86.R_CX = 0;
+ if (M.x86.mode & SYSMODE_32BIT_REP) {
+ M.x86.R_ECX = 0;
+ }
+ M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
+ } else {
+ single_out(size);
+ M.x86.R_SI += inc;
+ }
+}
+
+/****************************************************************************
+PARAMETERS:
+addr - Address to fetch word from
+
+REMARKS:
+Fetches a word from emulator memory using an absolute address.
+****************************************************************************/
+u16 mem_access_word(int addr)
+{
+DB( if (CHECK_MEM_ACCESS())
+ x86emu_check_mem_access(addr);)
+ return (*sys_rdw)(addr);
+}
+
+/****************************************************************************
+REMARKS:
+Pushes a word onto the stack.
+
+NOTE: Do not inline this, as (*sys_wrX) is already inline!
+****************************************************************************/
+void push_word(u16 w)
+{
+DB( if (CHECK_SP_ACCESS())
+ x86emu_check_sp_access();)
+ M.x86.R_SP -= 2;
+ (*sys_wrw)(((u32)M.x86.R_SS << 4) + M.x86.R_SP, w);
+}
+
+/****************************************************************************
+REMARKS:
+Pushes a long onto the stack.
+
+NOTE: Do not inline this, as (*sys_wrX) is already inline!
+****************************************************************************/
+void push_long(u32 w)
+{
+DB( if (CHECK_SP_ACCESS())
+ x86emu_check_sp_access();)
+ M.x86.R_SP -= 4;
+ (*sys_wrl)(((u32)M.x86.R_SS << 4) + M.x86.R_SP, w);
+}
+
+/****************************************************************************
+REMARKS:
+Pops a word from the stack.
+
+NOTE: Do not inline this, as (*sys_rdX) is already inline!
+****************************************************************************/
+u16 pop_word(void)
+{
+ u16 res;
+
+DB( if (CHECK_SP_ACCESS())
+ x86emu_check_sp_access();)
+ res = (*sys_rdw)(((u32)M.x86.R_SS << 4) + M.x86.R_SP);
+ M.x86.R_SP += 2;
+ return res;
+}
+
+/****************************************************************************
+REMARKS:
+Pops a long from the stack.
+
+NOTE: Do not inline this, as (*sys_rdX) is already inline!
+****************************************************************************/
+u32 pop_long(void)
+{
+ u32 res;
+
+DB( if (CHECK_SP_ACCESS())
+ x86emu_check_sp_access();)
+ res = (*sys_rdl)(((u32)M.x86.R_SS << 4) + M.x86.R_SP);
+ M.x86.R_SP += 4;
+ return res;
+}
+
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1996-1999 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: Header file for primitive operation functions.
+*
+****************************************************************************/
+
+#ifndef __X86EMU_PRIM_OPS_H
+#define __X86EMU_PRIM_OPS_H
+
+#include "prim_asm.h"
+
+#ifdef __cplusplus
+extern "C" { /* Use "C" linkage when in C++ mode */
+#endif
+
+u16 aaa_word (u16 d);
+u16 aas_word (u16 d);
+u16 aad_word (u16 d);
+u16 aam_word (u8 d);
+u8 adc_byte (u8 d, u8 s);
+u16 adc_word (u16 d, u16 s);
+u32 adc_long (u32 d, u32 s);
+u8 add_byte (u8 d, u8 s);
+u16 add_word (u16 d, u16 s);
+u32 add_long (u32 d, u32 s);
+u8 and_byte (u8 d, u8 s);
+u16 and_word (u16 d, u16 s);
+u32 and_long (u32 d, u32 s);
+u8 cmp_byte (u8 d, u8 s);
+u16 cmp_word (u16 d, u16 s);
+u32 cmp_long (u32 d, u32 s);
+u8 daa_byte (u8 d);
+u8 das_byte (u8 d);
+u8 dec_byte (u8 d);
+u16 dec_word (u16 d);
+u32 dec_long (u32 d);
+u8 inc_byte (u8 d);
+u16 inc_word (u16 d);
+u32 inc_long (u32 d);
+u8 or_byte (u8 d, u8 s);
+u16 or_word (u16 d, u16 s);
+u32 or_long (u32 d, u32 s);
+u8 neg_byte (u8 s);
+u16 neg_word (u16 s);
+u32 neg_long (u32 s);
+u8 not_byte (u8 s);
+u16 not_word (u16 s);
+u32 not_long (u32 s);
+u8 rcl_byte (u8 d, u8 s);
+u16 rcl_word (u16 d, u8 s);
+u32 rcl_long (u32 d, u8 s);
+u8 rcr_byte (u8 d, u8 s);
+u16 rcr_word (u16 d, u8 s);
+u32 rcr_long (u32 d, u8 s);
+u8 rol_byte (u8 d, u8 s);
+u16 rol_word (u16 d, u8 s);
+u32 rol_long (u32 d, u8 s);
+u8 ror_byte (u8 d, u8 s);
+u16 ror_word (u16 d, u8 s);
+u32 ror_long (u32 d, u8 s);
+u8 shl_byte (u8 d, u8 s);
+u16 shl_word (u16 d, u8 s);
+u32 shl_long (u32 d, u8 s);
+u8 shr_byte (u8 d, u8 s);
+u16 shr_word (u16 d, u8 s);
+u32 shr_long (u32 d, u8 s);
+u8 sar_byte (u8 d, u8 s);
+u16 sar_word (u16 d, u8 s);
+u32 sar_long (u32 d, u8 s);
+u16 shld_word (u16 d, u16 fill, u8 s);
+u32 shld_long (u32 d, u32 fill, u8 s);
+u16 shrd_word (u16 d, u16 fill, u8 s);
+u32 shrd_long (u32 d, u32 fill, u8 s);
+u8 sbb_byte (u8 d, u8 s);
+u16 sbb_word (u16 d, u16 s);
+u32 sbb_long (u32 d, u32 s);
+u8 sub_byte (u8 d, u8 s);
+u16 sub_word (u16 d, u16 s);
+u32 sub_long (u32 d, u32 s);
+void test_byte (u8 d, u8 s);
+void test_word (u16 d, u16 s);
+void test_long (u32 d, u32 s);
+u8 xor_byte (u8 d, u8 s);
+u16 xor_word (u16 d, u16 s);
+u32 xor_long (u32 d, u32 s);
+void imul_byte (u8 s);
+void imul_word (u16 s);
+void imul_long (u32 s);
+void imul_long_direct(u32 *res_lo, u32* res_hi,u32 d, u32 s);
+void mul_byte (u8 s);
+void mul_word (u16 s);
+void mul_long (u32 s);
+void idiv_byte (u8 s);
+void idiv_word (u16 s);
+void idiv_long (u32 s);
+void div_byte (u8 s);
+void div_word (u16 s);
+void div_long (u32 s);
+void ins (int size);
+void outs (int size);
+u16 mem_access_word (int addr);
+void push_word (u16 w);
+void push_long (u32 w);
+u16 pop_word (void);
+u32 pop_long (void);
+
+#if defined(__HAVE_INLINE_ASSEMBLER__) && !defined(PRIM_OPS_NO_REDEFINE_ASM)
+
+#define aaa_word(d) aaa_word_asm(&M.x86.R_EFLG,d)
+#define aas_word(d) aas_word_asm(&M.x86.R_EFLG,d)
+#define aad_word(d) aad_word_asm(&M.x86.R_EFLG,d)
+#define aam_word(d) aam_word_asm(&M.x86.R_EFLG,d)
+#define adc_byte(d,s) adc_byte_asm(&M.x86.R_EFLG,d,s)
+#define adc_word(d,s) adc_word_asm(&M.x86.R_EFLG,d,s)
+#define adc_long(d,s) adc_long_asm(&M.x86.R_EFLG,d,s)
+#define add_byte(d,s) add_byte_asm(&M.x86.R_EFLG,d,s)
+#define add_word(d,s) add_word_asm(&M.x86.R_EFLG,d,s)
+#define add_long(d,s) add_long_asm(&M.x86.R_EFLG,d,s)
+#define and_byte(d,s) and_byte_asm(&M.x86.R_EFLG,d,s)
+#define and_word(d,s) and_word_asm(&M.x86.R_EFLG,d,s)
+#define and_long(d,s) and_long_asm(&M.x86.R_EFLG,d,s)
+#define cmp_byte(d,s) cmp_byte_asm(&M.x86.R_EFLG,d,s)
+#define cmp_word(d,s) cmp_word_asm(&M.x86.R_EFLG,d,s)
+#define cmp_long(d,s) cmp_long_asm(&M.x86.R_EFLG,d,s)
+#define daa_byte(d) daa_byte_asm(&M.x86.R_EFLG,d)
+#define das_byte(d) das_byte_asm(&M.x86.R_EFLG,d)
+#define dec_byte(d) dec_byte_asm(&M.x86.R_EFLG,d)
+#define dec_word(d) dec_word_asm(&M.x86.R_EFLG,d)
+#define dec_long(d) dec_long_asm(&M.x86.R_EFLG,d)
+#define inc_byte(d) inc_byte_asm(&M.x86.R_EFLG,d)
+#define inc_word(d) inc_word_asm(&M.x86.R_EFLG,d)
+#define inc_long(d) inc_long_asm(&M.x86.R_EFLG,d)
+#define or_byte(d,s) or_byte_asm(&M.x86.R_EFLG,d,s)
+#define or_word(d,s) or_word_asm(&M.x86.R_EFLG,d,s)
+#define or_long(d,s) or_long_asm(&M.x86.R_EFLG,d,s)
+#define neg_byte(s) neg_byte_asm(&M.x86.R_EFLG,s)
+#define neg_word(s) neg_word_asm(&M.x86.R_EFLG,s)
+#define neg_long(s) neg_long_asm(&M.x86.R_EFLG,s)
+#define not_byte(s) not_byte_asm(&M.x86.R_EFLG,s)
+#define not_word(s) not_word_asm(&M.x86.R_EFLG,s)
+#define not_long(s) not_long_asm(&M.x86.R_EFLG,s)
+#define rcl_byte(d,s) rcl_byte_asm(&M.x86.R_EFLG,d,s)
+#define rcl_word(d,s) rcl_word_asm(&M.x86.R_EFLG,d,s)
+#define rcl_long(d,s) rcl_long_asm(&M.x86.R_EFLG,d,s)
+#define rcr_byte(d,s) rcr_byte_asm(&M.x86.R_EFLG,d,s)
+#define rcr_word(d,s) rcr_word_asm(&M.x86.R_EFLG,d,s)
+#define rcr_long(d,s) rcr_long_asm(&M.x86.R_EFLG,d,s)
+#define rol_byte(d,s) rol_byte_asm(&M.x86.R_EFLG,d,s)
+#define rol_word(d,s) rol_word_asm(&M.x86.R_EFLG,d,s)
+#define rol_long(d,s) rol_long_asm(&M.x86.R_EFLG,d,s)
+#define ror_byte(d,s) ror_byte_asm(&M.x86.R_EFLG,d,s)
+#define ror_word(d,s) ror_word_asm(&M.x86.R_EFLG,d,s)
+#define ror_long(d,s) ror_long_asm(&M.x86.R_EFLG,d,s)
+#define shl_byte(d,s) shl_byte_asm(&M.x86.R_EFLG,d,s)
+#define shl_word(d,s) shl_word_asm(&M.x86.R_EFLG,d,s)
+#define shl_long(d,s) shl_long_asm(&M.x86.R_EFLG,d,s)
+#define shr_byte(d,s) shr_byte_asm(&M.x86.R_EFLG,d,s)
+#define shr_word(d,s) shr_word_asm(&M.x86.R_EFLG,d,s)
+#define shr_long(d,s) shr_long_asm(&M.x86.R_EFLG,d,s)
+#define sar_byte(d,s) sar_byte_asm(&M.x86.R_EFLG,d,s)
+#define sar_word(d,s) sar_word_asm(&M.x86.R_EFLG,d,s)
+#define sar_long(d,s) sar_long_asm(&M.x86.R_EFLG,d,s)
+#define shld_word(d,fill,s) shld_word_asm(&M.x86.R_EFLG,d,fill,s)
+#define shld_long(d,fill,s) shld_long_asm(&M.x86.R_EFLG,d,fill,s)
+#define shrd_word(d,fill,s) shrd_word_asm(&M.x86.R_EFLG,d,fill,s)
+#define shrd_long(d,fill,s) shrd_long_asm(&M.x86.R_EFLG,d,fill,s)
+#define sbb_byte(d,s) sbb_byte_asm(&M.x86.R_EFLG,d,s)
+#define sbb_word(d,s) sbb_word_asm(&M.x86.R_EFLG,d,s)
+#define sbb_long(d,s) sbb_long_asm(&M.x86.R_EFLG,d,s)
+#define sub_byte(d,s) sub_byte_asm(&M.x86.R_EFLG,d,s)
+#define sub_word(d,s) sub_word_asm(&M.x86.R_EFLG,d,s)
+#define sub_long(d,s) sub_long_asm(&M.x86.R_EFLG,d,s)
+#define test_byte(d,s) test_byte_asm(&M.x86.R_EFLG,d,s)
+#define test_word(d,s) test_word_asm(&M.x86.R_EFLG,d,s)
+#define test_long(d,s) test_long_asm(&M.x86.R_EFLG,d,s)
+#define xor_byte(d,s) xor_byte_asm(&M.x86.R_EFLG,d,s)
+#define xor_word(d,s) xor_word_asm(&M.x86.R_EFLG,d,s)
+#define xor_long(d,s) xor_long_asm(&M.x86.R_EFLG,d,s)
+#define imul_byte(s) imul_byte_asm(&M.x86.R_EFLG,&M.x86.R_AX,M.x86.R_AL,s)
+#define imul_word(s) imul_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,s)
+#define imul_long(s) imul_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,s)
+#define imul_long_direct(res_lo,res_hi,d,s) imul_long_asm(&M.x86.R_EFLG,res_lo,res_hi,d,s)
+#define mul_byte(s) mul_byte_asm(&M.x86.R_EFLG,&M.x86.R_AX,M.x86.R_AL,s)
+#define mul_word(s) mul_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,s)
+#define mul_long(s) mul_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,s)
+#define idiv_byte(s) idiv_byte_asm(&M.x86.R_EFLG,&M.x86.R_AL,&M.x86.R_AH,M.x86.R_AX,s)
+#define idiv_word(s) idiv_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,M.x86.R_DX,s)
+#define idiv_long(s) idiv_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,M.x86.R_EDX,s)
+#define div_byte(s) div_byte_asm(&M.x86.R_EFLG,&M.x86.R_AL,&M.x86.R_AH,M.x86.R_AX,s)
+#define div_word(s) div_word_asm(&M.x86.R_EFLG,&M.x86.R_AX,&M.x86.R_DX,M.x86.R_AX,M.x86.R_DX,s)
+#define div_long(s) div_long_asm(&M.x86.R_EFLG,&M.x86.R_EAX,&M.x86.R_EDX,M.x86.R_EAX,M.x86.R_EDX,s)
+
+#endif
+
+#ifdef __cplusplus
+} /* End of "C" linkage for C++ */
+#endif
+
+#endif /* __X86EMU_PRIM_OPS_H */
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1996-1999 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: This file includes subroutines which are related to
+* programmed I/O and memory access. Included in this module
+* are default functions with limited usefulness. For real
+* uses these functions will most likely be overriden by the
+* user library.
+*
+****************************************************************************/
+/* $XFree86: xc/extras/x86emu/src/x86emu/sys.c,v 1.5 2000/08/23 22:10:01 tsi Exp $ */
+
+#include <x86emu/x86emu.h>
+#include <x86emu/regs.h>
+#include "debug.h"
+#include "prim_ops.h"
+#if 1 /* Coreboot needs to map prinkf to printk. */
+#ifdef CONFIG_COREBOOT_V2
+#include "arch/io.h"
+#else
+#include "io.h"
+#endif
+#else
+#include <sys/io.h>
+#endif
+
+#ifdef IN_MODULE
+#include "xf86_ansic.h"
+#else
+#include <string.h>
+#endif
+/*------------------------- Global Variables ------------------------------*/
+
+X86EMU_sysEnv _X86EMU_env; /* Global emulator machine state */
+X86EMU_intrFuncs _X86EMU_intrTab[256];
+
+/*----------------------------- Implementation ----------------------------*/
+
+/* compute a pointer. This replaces code scattered all over the place! */
+u8 *mem_ptr(u32 addr, int size)
+{
+ u8 *retaddr = 0;
+
+ if (addr > M.mem_size - size) {
+ DB(printk("mem_ptr: address %#x out of range!\n", addr);)
+ HALT_SYS();
+ }
+ if (addr < 0x200) {
+ //printk("%x:%x updating int vector 0x%x\n",
+ // M.x86.R_CS, M.x86.R_IP, addr >> 2);
+ }
+ retaddr = (u8 *) (M.mem_base + addr);
+
+ return retaddr;
+}
+
+/****************************************************************************
+PARAMETERS:
+addr - Emulator memory address to read
+
+RETURNS:
+Byte value read from emulator memory.
+
+REMARKS:
+Reads a byte value from the emulator memory.
+****************************************************************************/
+u8 X86API rdb(u32 addr)
+{
+ u8 val;
+ u8 *ptr;
+
+ ptr = mem_ptr(addr, 1);
+
+ val = *ptr;
+ DB(if (DEBUG_MEM_TRACE())
+ printk("%#08x 1 -> %#x\n", addr, val);)
+ return val;
+}
+
+/****************************************************************************
+PARAMETERS:
+addr - Emulator memory address to read
+
+RETURNS:
+Word value read from emulator memory.
+
+REMARKS:
+Reads a word value from the emulator memory.
+****************************************************************************/
+u16 X86API rdw(u32 addr)
+{
+ u16 val = 0;
+ u8 *ptr;
+
+ ptr = mem_ptr(addr, 2);
+ val = *(u16 *) (ptr);
+
+ DB(if (DEBUG_MEM_TRACE())
+ printk("%#08x 2 -> %#x\n", addr, val);)
+ return val;
+}
+
+/****************************************************************************
+PARAMETERS:
+addr - Emulator memory address to read
+
+RETURNS:
+Long value read from emulator memory.
+REMARKS:
+Reads a long value from the emulator memory.
+****************************************************************************/
+u32 X86API rdl(u32 addr)
+{
+ u32 val = 0;
+ u8 *ptr;
+
+ ptr = mem_ptr(addr, 4);
+ val = *(u32 *) (ptr);
+
+ DB(if (DEBUG_MEM_TRACE())
+ printk("%#08x 4 -> %#x\n", addr, val);)
+ return val;
+}
+
+/****************************************************************************
+PARAMETERS:
+addr - Emulator memory address to read
+val - Value to store
+
+REMARKS:
+Writes a byte value to emulator memory.
+****************************************************************************/
+void X86API wrb(u32 addr, u8 val)
+{
+ u8 *ptr;
+
+ ptr = mem_ptr(addr, 1);
+ *(u8 *) (ptr) = val;
+
+ DB(if (DEBUG_MEM_TRACE())
+ printk("%#08x 1 <- %#x\n", addr, val);)
+}
+
+/****************************************************************************
+PARAMETERS:
+addr - Emulator memory address to read
+val - Value to store
+
+REMARKS:
+Writes a word value to emulator memory.
+****************************************************************************/
+void X86API wrw(u32 addr, u16 val)
+{
+ u8 *ptr;
+
+ ptr = mem_ptr(addr, 2);
+ *(u16 *) (ptr) = val;
+
+ DB(if (DEBUG_MEM_TRACE())
+ printk("%#08x 2 <- %#x\n", addr, val);)
+}
+
+/****************************************************************************
+PARAMETERS:
+addr - Emulator memory address to read
+val - Value to store
+
+REMARKS:
+Writes a long value to emulator memory.
+****************************************************************************/
+void X86API wrl(u32 addr, u32 val)
+{
+ u8 *ptr;
+
+ ptr = mem_ptr(addr, 4);
+ *(u32 *) (ptr) = val;
+
+ DB(if (DEBUG_MEM_TRACE())
+ printk("%#08x 4 <- %#x\n", addr, val);)
+
+
+}
+
+/****************************************************************************
+PARAMETERS:
+addr - PIO address to read
+RETURN:
+0
+REMARKS:
+Default PIO byte read function. Doesn't perform real inb.
+****************************************************************************/
+static u8 X86API p_inb(X86EMU_pioAddr addr)
+{
+ DB(if (DEBUG_IO_TRACE())
+ printk("inb %#04x \n", addr);)
+ return inb(addr);
+}
+
+/****************************************************************************
+PARAMETERS:
+addr - PIO address to read
+RETURN:
+0
+REMARKS:
+Default PIO word read function. Doesn't perform real inw.
+****************************************************************************/
+static u16 X86API p_inw(X86EMU_pioAddr addr)
+{
+ DB(if (DEBUG_IO_TRACE())
+ printk("inw %#04x \n", addr);)
+ return inw(addr);
+}
+
+/****************************************************************************
+PARAMETERS:
+addr - PIO address to read
+RETURN:
+0
+REMARKS:
+Default PIO long read function. Doesn't perform real inl.
+****************************************************************************/
+static u32 X86API p_inl(X86EMU_pioAddr addr)
+{
+ DB(if (DEBUG_IO_TRACE())
+ printk("inl %#04x \n", addr);)
+ return inl(addr);
+}
+
+/****************************************************************************
+PARAMETERS:
+addr - PIO address to write
+val - Value to store
+REMARKS:
+Default PIO byte write function. Doesn't perform real outb.
+****************************************************************************/
+static void X86API p_outb(X86EMU_pioAddr addr, u8 val)
+{
+ DB(if (DEBUG_IO_TRACE())
+ printk("outb %#02x -> %#04x \n", val, addr);)
+ outb(val, addr);
+ return;
+}
+
+/****************************************************************************
+PARAMETERS:
+addr - PIO address to write
+val - Value to store
+REMARKS:
+Default PIO word write function. Doesn't perform real outw.
+****************************************************************************/
+static void X86API p_outw(X86EMU_pioAddr addr, u16 val)
+{
+ DB(if (DEBUG_IO_TRACE())
+ printk("outw %#04x -> %#04x \n", val, addr);)
+ outw(val, addr);
+ return;
+}
+
+/****************************************************************************
+PARAMETERS:
+addr - PIO address to write
+val - Value to store
+REMARKS:
+Default PIO ;ong write function. Doesn't perform real outl.
+****************************************************************************/
+static void X86API p_outl(X86EMU_pioAddr addr, u32 val)
+{
+ DB(if (DEBUG_IO_TRACE())
+ printk("outl %#08x -> %#04x \n", val, addr);)
+
+ outl(val, addr);
+ return;
+}
+
+/*------------------------- Global Variables ------------------------------*/
+
+u8(X86APIP sys_rdb) (u32 addr) = rdb;
+u16(X86APIP sys_rdw) (u32 addr) = rdw;
+u32(X86APIP sys_rdl) (u32 addr) = rdl;
+void (X86APIP sys_wrb) (u32 addr, u8 val) = wrb;
+void (X86APIP sys_wrw) (u32 addr, u16 val) = wrw;
+void (X86APIP sys_wrl) (u32 addr, u32 val) = wrl;
+u8(X86APIP sys_inb) (X86EMU_pioAddr addr) = p_inb;
+u16(X86APIP sys_inw) (X86EMU_pioAddr addr) = p_inw;
+u32(X86APIP sys_inl) (X86EMU_pioAddr addr) = p_inl;
+void (X86APIP sys_outb) (X86EMU_pioAddr addr, u8 val) = p_outb;
+void (X86APIP sys_outw) (X86EMU_pioAddr addr, u16 val) = p_outw;
+void (X86APIP sys_outl) (X86EMU_pioAddr addr, u32 val) = p_outl;
+
+/*----------------------------- Setup -------------------------------------*/
+
+/****************************************************************************
+PARAMETERS:
+funcs - New memory function pointers to make active
+
+REMARKS:
+This function is used to set the pointers to functions which access
+memory space, allowing the user application to override these functions
+and hook them out as necessary for their application.
+****************************************************************************/
+void X86EMU_setupMemFuncs(X86EMU_memFuncs * funcs)
+{
+ sys_rdb = funcs->rdb;
+ sys_rdw = funcs->rdw;
+ sys_rdl = funcs->rdl;
+ sys_wrb = funcs->wrb;
+ sys_wrw = funcs->wrw;
+ sys_wrl = funcs->wrl;
+}
+
+/****************************************************************************
+PARAMETERS:
+funcs - New programmed I/O function pointers to make active
+
+REMARKS:
+This function is used to set the pointers to functions which access
+I/O space, allowing the user application to override these functions
+and hook them out as necessary for their application.
+****************************************************************************/
+void X86EMU_setupPioFuncs(X86EMU_pioFuncs * funcs)
+{
+ sys_inb = funcs->inb;
+ sys_inw = funcs->inw;
+ sys_inl = funcs->inl;
+ sys_outb = funcs->outb;
+ sys_outw = funcs->outw;
+ sys_outl = funcs->outl;
+}
+
+/****************************************************************************
+PARAMETERS:
+funcs - New interrupt vector table to make active
+
+REMARKS:
+This function is used to set the pointers to functions which handle
+interrupt processing in the emulator, allowing the user application to
+hook interrupts as necessary for their application. Any interrupts that
+are not hooked by the user application, and reflected and handled internally
+in the emulator via the interrupt vector table. This allows the application
+to get control when the code being emulated executes specific software
+interrupts.
+****************************************************************************/
+void X86EMU_setupIntrFuncs(X86EMU_intrFuncs funcs[])
+{
+ int i;
+
+ for (i = 0; i < 256; i++)
+ _X86EMU_intrTab[i] = NULL;
+ if (funcs) {
+ for (i = 0; i < 256; i++)
+ _X86EMU_intrTab[i] = funcs[i];
+ }
+}
+
+/****************************************************************************
+PARAMETERS:
+int - New software interrupt to prepare for
+
+REMARKS:
+This function is used to set up the emulator state to exceute a software
+interrupt. This can be used by the user application code to allow an
+interrupt to be hooked, examined and then reflected back to the emulator
+so that the code in the emulator will continue processing the software
+interrupt as per normal. This essentially allows system code to actively
+hook and handle certain software interrupts as necessary.
+****************************************************************************/
+void X86EMU_prepareForInt(int num)
+{
+ push_word((u16) M.x86.R_FLG);
+ CLEAR_FLAG(F_IF);
+ CLEAR_FLAG(F_TF);
+ push_word(M.x86.R_CS);
+ M.x86.R_CS = mem_access_word(num * 4 + 2);
+ push_word(M.x86.R_IP);
+ M.x86.R_IP = mem_access_word(num * 4);
+ M.x86.intr = 0;
+}
+
+void X86EMU_setMemBase(void *base, size_t size)
+{
+ M.mem_base = (unsigned long) base;
+ M.mem_size = size;
+}
--- /dev/null
+/****************************************************************************
+*
+* Realmode X86 Emulator Library
+*
+* Copyright (C) 1996-1999 SciTech Software, Inc.
+* Copyright (C) David Mosberger-Tang
+* Copyright (C) 1999 Egbert Eich
+*
+* ========================================================================
+*
+* Permission to use, copy, modify, distribute, and sell this software and
+* its documentation for any purpose is hereby granted without fee,
+* provided that the above copyright notice appear in all copies and that
+* both that copyright notice and this permission notice appear in
+* supporting documentation, and that the name of the authors not be used
+* in advertising or publicity pertaining to distribution of the software
+* without specific, written prior permission. The authors makes no
+* representations about the suitability of this software for any purpose.
+* It is provided "as is" without express or implied warranty.
+*
+* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+* PERFORMANCE OF THIS SOFTWARE.
+*
+* ========================================================================
+*
+* Language: ANSI C
+* Environment: Any
+* Developer: Kendall Bennett
+*
+* Description: Header file for system specific functions. These functions
+* are always compiled and linked in the OS depedent libraries,
+* and never in a binary portable driver.
+*
+****************************************************************************/
+
+/* $XFree86: xc/extras/x86emu/src/x86emu/x86emu/x86emui.h,v 1.4 2001/04/01 13:59:58 tsi Exp $ */
+
+#ifndef __X86EMU_X86EMUI_H
+#define __X86EMU_X86EMUI_H
+
+/* If we are compiling in C++ mode, we can compile some functions as
+ * inline to increase performance (however the code size increases quite
+ * dramatically in this case).
+ */
+
+#if defined(__cplusplus) && !defined(_NO_INLINE)
+#define _INLINE inline
+#else
+#define _INLINE static
+#endif
+
+/* Get rid of unused parameters in C++ compilation mode */
+
+#ifdef __cplusplus
+#define X86EMU_UNUSED(v)
+#else
+#define X86EMU_UNUSED(v) v
+#endif
+
+#include "x86emu/x86emu.h"
+#include "x86emu/regs.h"
+#include "debug.h"
+#include "decode.h"
+#include "ops.h"
+#include "prim_ops.h"
+#include "fpu.h"
+#include "x86emu/fpu_regs.h"
+
+#ifdef IN_MODULE
+#include <xf86_ansic.h>
+#else
+//#include <stdio.h>
+//#include <stdlib.h>
+#include <string.h>
+#endif
+/*--------------------------- Inline Functions ----------------------------*/
+
+#ifdef __cplusplus
+extern "C" { /* Use "C" linkage when in C++ mode */
+#endif
+
+extern u8 (X86APIP sys_rdb)(u32 addr);
+extern u16 (X86APIP sys_rdw)(u32 addr);
+extern u32 (X86APIP sys_rdl)(u32 addr);
+extern void (X86APIP sys_wrb)(u32 addr,u8 val);
+extern void (X86APIP sys_wrw)(u32 addr,u16 val);
+extern void (X86APIP sys_wrl)(u32 addr,u32 val);
+
+extern u8 (X86APIP sys_inb)(X86EMU_pioAddr addr);
+extern u16 (X86APIP sys_inw)(X86EMU_pioAddr addr);
+extern u32 (X86APIP sys_inl)(X86EMU_pioAddr addr);
+extern void (X86APIP sys_outb)(X86EMU_pioAddr addr,u8 val);
+extern void (X86APIP sys_outw)(X86EMU_pioAddr addr,u16 val);
+extern void (X86APIP sys_outl)(X86EMU_pioAddr addr,u32 val);
+
+#ifdef __cplusplus
+} /* End of "C" linkage for C++ */
+#endif
+
+#endif /* __X86EMU_X86EMUI_H */
--- /dev/null
+object biosemu.o
+object debug.o
+object device.o
+object interrupt.o
+object io.o
+object mem.o
+object pmm.o
+#object vbe.o
+dir compat
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * Copyright (c) 2008, 2009 Pattrick Hueper <phueper@hueper.net>
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#include <string.h>
+
+#include <types.h>
+#ifndef CONFIG_COREBOOT_V2
+#include <cpu.h>
+#endif
+
+#include "debug.h"
+
+#include <x86emu/x86emu.h>
+#include <x86emu/regs.h>
+#ifdef CONFIG_COREBOOT_V2
+#include "../x86emu/prim_ops.h"
+#else
+#include <x86emu/prim_ops.h> // for push_word
+#endif
+
+#include "biosemu.h"
+#include "io.h"
+#include "mem.h"
+#include "interrupt.h"
+#include "device.h"
+#include "pmm.h"
+
+#ifdef CONFIG_COREBOOT_V2
+#include "compat/rtas.h"
+#else
+#include <rtas.h>
+#endif
+
+#include <device/device.h>
+
+static X86EMU_memFuncs my_mem_funcs = {
+ my_rdb, my_rdw, my_rdl,
+ my_wrb, my_wrw, my_wrl
+};
+
+static X86EMU_pioFuncs my_pio_funcs = {
+ my_inb, my_inw, my_inl,
+ my_outb, my_outw, my_outl
+};
+
+/* interrupt function override array (see biosemu.h) */
+yabel_handleIntFunc yabel_intFuncArray[256];
+
+void dump(u8 * addr, u32 len);
+
+/* main entry into YABEL biosemu, arguments are:
+ * *biosmem = pointer to virtual memory
+ * biosmem_size = size of the virtual memory
+ * *dev = pointer to the device to be initialised
+ * rom_addr = address of the OptionROM to be executed, if this is = 0, YABEL
+ * will look for an ExpansionROM BAR and use the code from there.
+ */
+u32
+biosemu(u8 *biosmem, u32 biosmem_size, struct device * dev, unsigned long rom_addr)
+{
+ u8 *rom_image;
+ int i = 0;
+#ifdef CONFIG_DEBUG
+ debug_flags = 0;//DEBUG_PRINT_INT10 | DEBUG_PNP | DEBUG_INTR | DEBUG_CHECK_VMEM_ACCESS | DEBUG_MEM | DEBUG_IO;
+ // | DEBUG_CHECK_VMEM_ACCESS | DEBUG_MEM | DEBUG_IO;
+ // | DEBUG_TRACE_X86EMU | DEBUG_JMP;
+
+ /* use CONFIG_YABEL_DEBUG_FLAGS, too... */
+ debug_flags |= CONFIG_YABEL_DEBUG_FLAGS;
+#endif
+ if (biosmem_size < MIN_REQUIRED_VMEM_SIZE) {
+ printf("Error: Not enough virtual memory: %x, required: %x!\n",
+ biosmem_size, MIN_REQUIRED_VMEM_SIZE);
+ return -1;
+ }
+ if (biosemu_dev_init(dev) != 0) {
+ printf("Error initializing device!\n");
+ return -1;
+ }
+ if (biosemu_dev_check_exprom(rom_addr) != 0) {
+ printf("Error: Device Expansion ROM invalid!\n");
+ return -1;
+ }
+ rom_image = (u8 *) bios_device.img_addr;
+ DEBUG_PRINTF("executing rom_image from %p\n", rom_image);
+ DEBUG_PRINTF("biosmem at %p\n", biosmem);
+
+ DEBUG_PRINTF("Image Size: %d\n", bios_device.img_size);
+
+ // in case we jump somewhere unexpected, or execution is finished,
+ // fill the biosmem with hlt instructions (0xf4)
+ memset(biosmem, 0xf4, biosmem_size);
+
+ M.mem_base = (long) biosmem;
+ M.mem_size = biosmem_size;
+ DEBUG_PRINTF("membase set: %08x, size: %08x\n", (int) M.mem_base,
+ (int) M.mem_size);
+
+ // copy expansion ROM image to segment OPTION_ROM_CODE_SEGMENT
+ // NOTE: this sometimes fails, some bytes are 0x00... so we compare
+ // after copying and do some retries...
+ u8 *mem_img = biosmem + (OPTION_ROM_CODE_SEGMENT << 4);
+ u8 copy_count = 0;
+ u8 cmp_result = 0;
+ do {
+#if 0
+ set_ci();
+ memcpy(mem_img, rom_image, len);
+ clr_ci();
+#else
+ // memcpy fails... try copy byte-by-byte with set/clr_ci
+ u8 c;
+ for (i = 0; i < bios_device.img_size; i++) {
+ set_ci();
+ c = *(rom_image + i);
+ if (c != *(rom_image + i)) {
+ clr_ci();
+ printf("Copy failed at: %x/%x\n", i,
+ bios_device.img_size);
+ printf("rom_image(%x): %x, mem_img(%x): %x\n",
+ i, *(rom_image + i), i, *(mem_img + i));
+ break;
+ }
+ clr_ci();
+ *(mem_img + i) = c;
+ }
+#endif
+ copy_count++;
+ set_ci();
+ cmp_result = memcmp(mem_img, rom_image, bios_device.img_size);
+ clr_ci();
+ }
+ while ((copy_count < 5) && (cmp_result != 0));
+ if (cmp_result != 0) {
+ printf
+ ("\nCopying Expansion ROM Image to Memory failed after %d retries! (%x)\n",
+ copy_count, cmp_result);
+ dump(rom_image, 0x20);
+ dump(mem_img, 0x20);
+ return 0;
+ }
+ // setup default Interrupt Vectors
+ // some expansion ROMs seem to check for these addresses..
+ // each handler is only an IRET (0xCF) instruction
+ // ROM BIOS Int 10 Handler F000:F065
+ my_wrl(0x10 * 4, 0xf000f065);
+ my_wrb(0x000ff065, 0xcf);
+ // ROM BIOS Int 11 Handler F000:F84D
+ my_wrl(0x11 * 4, 0xf000f84d);
+ my_wrb(0x000ff84d, 0xcf);
+ // ROM BIOS Int 12 Handler F000:F841
+ my_wrl(0x12 * 4, 0xf000f841);
+ my_wrb(0x000ff841, 0xcf);
+ // ROM BIOS Int 13 Handler F000:EC59
+ my_wrl(0x13 * 4, 0xf000ec59);
+ my_wrb(0x000fec59, 0xcf);
+ // ROM BIOS Int 14 Handler F000:E739
+ my_wrl(0x14 * 4, 0xf000e739);
+ my_wrb(0x000fe739, 0xcf);
+ // ROM BIOS Int 15 Handler F000:F859
+ my_wrl(0x15 * 4, 0xf000f859);
+ my_wrb(0x000ff859, 0xcf);
+ // ROM BIOS Int 16 Handler F000:E82E
+ my_wrl(0x16 * 4, 0xf000e82e);
+ my_wrb(0x000fe82e, 0xcf);
+ // ROM BIOS Int 17 Handler F000:EFD2
+ my_wrl(0x17 * 4, 0xf000efd2);
+ my_wrb(0x000fefd2, 0xcf);
+ // ROM BIOS Int 1A Handler F000:FE6E
+ my_wrl(0x1a * 4, 0xf000fe6e);
+ my_wrb(0x000ffe6e, 0xcf);
+
+ // setup BIOS Data Area (0000:04xx, or 0040:00xx)
+ // we currently 0 this area, meaning "we dont have
+ // any hardware" :-) no serial/parallel ports, floppys, ...
+ memset(biosmem + 0x400, 0x0, 0x100);
+
+ // at offset 13h in BDA is the memory size in kbytes
+ my_wrw(0x413, biosmem_size / 1024);
+ // at offset 0eh in BDA is the segment of the Extended BIOS Data Area
+ // see setup further down
+ my_wrw(0x40e, INITIAL_EBDA_SEGMENT);
+ // TODO: setup BDA Video Data ( offset 49h-66h)
+ // e.g. to store video mode, cursor position, ...
+ // in int10 (done) handler and VBE Functions
+
+ // TODO: setup BDA Fixed Disk Data
+ // 74h: Fixed Disk Last Operation Status
+ // 75h: Fixed Disk Number of Disk Drives
+
+ // TODO: check BDA for further needed data...
+
+ //setup Extended BIOS Data Area
+ //we currently 0 this area
+ memset(biosmem + (INITIAL_EBDA_SEGMENT << 4), 0, INITIAL_EBDA_SIZE);
+ // at offset 0h in EBDA is the size of the EBDA in KB
+ my_wrw((INITIAL_EBDA_SEGMENT << 4) + 0x0, INITIAL_EBDA_SIZE / 1024);
+ //TODO: check for further needed EBDA data...
+
+ // setup original ROM BIOS Area (F000:xxxx)
+ char *date = "06/11/99";
+ for (i = 0; date[i]; i++)
+ my_wrb(0xffff5 + i, date[i]);
+ // set up eisa ident string
+ char *ident = "PCI_ISA";
+ for (i = 0; ident[i]; i++)
+ my_wrb(0xfffd9 + i, ident[i]);
+
+ // write system model id for IBM-AT
+ // according to "Ralf Browns Interrupt List" Int15 AH=C0 Table 515,
+ // model FC is the original AT and also used in all DOSEMU Versions.
+ my_wrb(0xFFFFE, 0xfc);
+
+ //setup interrupt handler
+ X86EMU_intrFuncs intrFuncs[256];
+ for (i = 0; i < 256; i++)
+ intrFuncs[i] = handleInterrupt;
+ X86EMU_setupIntrFuncs(intrFuncs);
+ X86EMU_setupPioFuncs(&my_pio_funcs);
+ X86EMU_setupMemFuncs(&my_mem_funcs);
+
+ //setup PMM struct in BIOS_DATA_SEGMENT, offset 0x0
+ u8 pmm_length = pmm_setup(BIOS_DATA_SEGMENT, 0x0);
+ if (pmm_length <= 0) {
+ printf ("\nYABEL: Warning: PMM Area could not be setup. PMM not available (%x)\n",
+ pmm_length);
+ return 0;
+ } else {
+ CHECK_DBG(DEBUG_PMM) {
+ /* test the PMM */
+ pmm_test();
+ /* and clean it again by calling pmm_setup... */
+ pmm_length = pmm_setup(BIOS_DATA_SEGMENT, 0x0);
+ }
+ }
+ // setup the CPU
+ M.x86.R_AH = bios_device.bus;
+ M.x86.R_AL = bios_device.devfn;
+ M.x86.R_DX = 0x80;
+ M.x86.R_EIP = 3;
+ M.x86.R_CS = OPTION_ROM_CODE_SEGMENT;
+
+ // Initialize stack and data segment
+ M.x86.R_SS = STACK_SEGMENT;
+ M.x86.R_SP = STACK_START_OFFSET;
+ M.x86.R_DS = DATA_SEGMENT;
+
+ // push a HLT instruction and a pointer to it onto the stack
+ // any return will pop the pointer and jump to the HLT, thus
+ // exiting (more or less) cleanly
+ push_word(0xf4f4); //F4=HLT
+ push_word(M.x86.R_SS);
+ push_word(M.x86.R_SP + 2);
+
+ CHECK_DBG(DEBUG_TRACE_X86EMU) {
+ X86EMU_trace_on();
+ } else {
+#ifdef CONFIG_DEBUG
+ M.x86.debug |= DEBUG_SAVE_IP_CS_F;
+ M.x86.debug |= DEBUG_DECODE_F;
+ M.x86.debug |= DEBUG_DECODE_NOPRINT_F;
+#endif
+ }
+ CHECK_DBG(DEBUG_JMP) {
+ M.x86.debug |= DEBUG_TRACEJMP_F;
+ M.x86.debug |= DEBUG_TRACEJMP_REGS_F;
+ M.x86.debug |= DEBUG_TRACECALL_F;
+ M.x86.debug |= DEBUG_TRACECALL_REGS_F;
+ }
+
+ DEBUG_PRINTF("Executing Initialization Vector...\n");
+ X86EMU_exec();
+ DEBUG_PRINTF("done\n");
+
+ /* According to the PNP BIOS Spec, Option ROMs should upon exit, return
+ * some boot device status in AX (see PNP BIOS Spec Section 3.3
+ */
+ DEBUG_PRINTF_CS_IP("Option ROM Exit Status: %04x\n", M.x86.R_AX);
+#ifdef CONFIG_DEBUG
+ DEBUG_PRINTF("Exit Status Decode:\n");
+ if (M.x86.R_AX & 0x100) { // bit 8
+ DEBUG_PRINTF
+ (" IPL Device supporting INT 13h Block Device Format:\n");
+ switch (((M.x86.R_AX >> 4) & 0x3)) { // bits 5:4
+ case 0:
+ DEBUG_PRINTF(" No IPL Device attached\n");
+ break;
+ case 1:
+ DEBUG_PRINTF(" IPL Device status unknown\n");
+ break;
+ case 2:
+ DEBUG_PRINTF(" IPL Device attached\n");
+ break;
+ case 3:
+ DEBUG_PRINTF(" IPL Device status RESERVED!!\n");
+ break;
+ }
+ }
+ if (M.x86.R_AX & 0x80) { // bit 7
+ DEBUG_PRINTF
+ (" Output Device supporting INT 10h Character Output:\n");
+ switch (((M.x86.R_AX >> 4) & 0x3)) { // bits 5:4
+ case 0:
+ DEBUG_PRINTF(" No Display Device attached\n");
+ break;
+ case 1:
+ DEBUG_PRINTF(" Display Device status unknown\n");
+ break;
+ case 2:
+ DEBUG_PRINTF(" Display Device attached\n");
+ break;
+ case 3:
+ DEBUG_PRINTF(" Display Device status RESERVED!!\n");
+ break;
+ }
+ }
+ if (M.x86.R_AX & 0x40) { // bit 6
+ DEBUG_PRINTF
+ (" Input Device supporting INT 9h Character Input:\n");
+ switch (((M.x86.R_AX >> 4) & 0x3)) { // bits 5:4
+ case 0:
+ DEBUG_PRINTF(" No Input Device attached\n");
+ break;
+ case 1:
+ DEBUG_PRINTF(" Input Device status unknown\n");
+ break;
+ case 2:
+ DEBUG_PRINTF(" Input Device attached\n");
+ break;
+ case 3:
+ DEBUG_PRINTF(" Input Device status RESERVED!!\n");
+ break;
+ }
+ }
+#endif
+ /* Check whether the stack is "clean" i.e. containing the HLT
+ * instruction we pushed before executing and pointing to the original
+ * stack address... indicating that the initialization probably was
+ * successful
+ */
+ if ((pop_word() == 0xf4f4) && (M.x86.R_SS == STACK_SEGMENT)
+ && (M.x86.R_SP == STACK_START_OFFSET)) {
+ DEBUG_PRINTF("Stack is clean, initialization successfull!\n");
+ } else {
+ DEBUG_PRINTF
+ ("Stack unclean, initialization probably NOT COMPLETE!!\n");
+ DEBUG_PRINTF("SS:SP = %04x:%04x, expected: %04x:%04x\n",
+ M.x86.R_SS, M.x86.R_SP, STACK_SEGMENT,
+ STACK_START_OFFSET);
+ }
+
+
+ // TODO: according to the BIOS Boot Spec initializations may be ended using INT18h and setting
+ // the status.
+ // We need to implement INT18 accordingly, pseudo code is in specsbbs101.pdf page 30
+ // (also for Int19)
+ return 0;
+}
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net>
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#ifndef _BIOSEMU_BIOSEMU_H_
+#define _BIOSEMU_BIOSEMU_H_
+
+#define MIN_REQUIRED_VMEM_SIZE 0x100000 // 1MB
+
+//define default segments for different components
+#define STACK_SEGMENT 0x1000 //1000:xxxx
+#define STACK_START_OFFSET 0xfffe
+
+#define DATA_SEGMENT 0x2000
+#define VBE_SEGMENT 0x3000
+
+#define PMM_CONV_SEGMENT 0x4000 // 4000:xxxx is PMM conventional memory area, extended memory area
+ // will be anything beyound MIN_REQUIRED_MEMORY_SIZE
+#define PNP_DATA_SEGMENT 0x5000
+
+#define OPTION_ROM_CODE_SEGMENT 0xc000
+
+#define BIOS_DATA_SEGMENT 0xF000
+// both EBDA values are _initial_ values, they may (and will be) changed at runtime by option ROMs!!
+#define INITIAL_EBDA_SEGMENT 0xF600 // segment of the Extended BIOS Data Area
+#define INITIAL_EBDA_SIZE 0x400 // size of the EBDA (at least 1KB!! since size is stored in KB!)
+
+#define PMM_INT_NUM 0xFC // we misuse INT FC for PMM functionality, at the PMM Entry Point
+ // Address, there will only be a call to this INT and a RETF
+#define PNP_INT_NUM 0xFD
+
+/* array of funtion pointers to override generic interrupt handlers
+ * a YABEL caller can add functions to this array before calling YABEL
+ * if a interrupt occurs, YABEL checks wether a function is set in
+ * this array and only runs the generic interrupt handler code, if
+ * the function pointer is NULL */
+typedef int (* yabel_handleIntFunc)(void);
+extern yabel_handleIntFunc yabel_intFuncArray[256];
+
+#endif
--- /dev/null
+object functions.o
--- /dev/null
+/****************************************************************************
+ * YABEL BIOS Emulator
+ *
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Copyright (c) 2008 Pattrick Hueper <phueper@hueper.net>
+ ****************************************************************************/
+
+/* this file contains functions provided by SLOF, that the current biosemu implementation needs
+ * they should go away inthe future...
+ */
+
+#include <types.h>
+#ifndef CONFIG_COREBOOT_V2
+#include <config.h>
+#endif
+#include <device/device.h>
+
+#define VMEM_SIZE 1024 *1024 /* 1 MB */
+
+#ifdef CONFIG_YABEL_VIRTMEM_LOCATION
+u8* vmem = (u8 *) CONFIG_YABEL_VIRTMEM_LOCATION;
+#else
+u8* vmem = (u8 *) (16*1024*1024); /* default to 16MB */
+#endif
+
+u32 biosemu(u8 *biosmem, u32 biosmem_size, struct device *dev,
+ unsigned long rom_addr);
+
+void run_bios(struct device * dev, unsigned long addr)
+{
+ biosemu(vmem, VMEM_SIZE, dev, addr);
+}
+
+u64 get_time(void)
+{
+ u64 act;
+ u32 eax, edx;
+
+ __asm__ __volatile__(
+ "rdtsc"
+ : "=a"(eax), "=d"(edx)
+ : /* no inputs, no clobber */);
+ act = ((u64) edx << 32) | eax;
+ return act;
+}
+
+unsigned int
+read_io(void *addr, size_t sz)
+{
+ unsigned int ret;
+ /* since we are using inb instructions, we need the port number as 16bit value */
+ u16 port = (u16)(u32) addr;
+
+ switch (sz) {
+ case 1:
+ asm volatile ("inb %1, %b0" : "=a"(ret) : "d" (port));
+ break;
+ case 2:
+ asm volatile ("inw %1, %w0" : "=a"(ret) : "d" (port));
+ break;
+ case 4:
+ asm volatile ("inl %1, %0" : "=a"(ret) : "d" (port));
+ break;
+ default:
+ ret = 0;
+ }
+
+ return ret;
+}
+
+int
+write_io(void *addr, unsigned int value, size_t sz)
+{
+ u16 port = (u16)(u32) addr;
+ switch (sz) {
+ /* since we are using inb instructions, we need the port number as 16bit value */
+ case 1:
+ asm volatile ("outb %b0, %1" : : "a"(value), "d" (port));
+ break;
+ case 2:
+ asm volatile ("outw %w0, %1" : : "a"(value), "d" (port));
+ break;
+ case 4:
+ asm volatile ("outl %0, %1" : : "a"(value), "d" (port));
+ break;
+ default:
+ return -1;
+ }
+
+ return 0;
+}
+
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+
+#ifndef OF_H
+#define OF_H
+#define p32 int
+#define p32cast (int) (unsigned long) (void*)
+
+#define phandle_t p32
+#define ihandle_t p32
+
+typedef struct
+{
+ unsigned int serv;
+ int nargs;
+ int nrets;
+ unsigned int args[16];
+} of_arg_t;
+
+
+phandle_t of_finddevice (const char *);
+phandle_t of_peer (phandle_t);
+phandle_t of_child (phandle_t);
+phandle_t of_parent (phandle_t);
+int of_getprop (phandle_t, const char *, void *, int);
+void * of_call_method_3 (const char *, ihandle_t, int);
+
+
+ihandle_t of_open (const char *);
+void of_close(ihandle_t);
+int of_read (ihandle_t , void*, int);
+int of_write (ihandle_t, void*, int);
+int of_seek (ihandle_t, int, int);
+
+void * of_claim(void *, unsigned int , unsigned int );
+void of_release(void *, unsigned int );
+
+int of_yield(void);
+void * of_set_callback(void *);
+
+int vpd_read(unsigned int , unsigned int , char *);
+int vpd_write(unsigned int , unsigned int , char *);
+int write_mm_log(char *, unsigned int , unsigned short );
+
+#endif
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+
+#ifndef RTAS_H
+#define RTAS_H
+
+#include "of.h"
+
+typedef struct dtime {
+ unsigned int year;
+ unsigned int month;
+ unsigned int day;
+ unsigned int hour;
+ unsigned int minute;
+ unsigned int second;
+ unsigned int nano;
+} dtime;
+
+typedef void (*thread_t) (int);
+
+int rtas_token(const char *);
+int rtas_call(int, int, int, int *, ...);
+void rtas_init(void);
+int rtas_pci_config_read (long long, int, int, int, int);
+int rtas_pci_config_write (long long, int, int, int, int, int);
+int rtas_set_time_of_day(dtime *);
+int rtas_get_time_of_day(dtime *);
+int rtas_ibm_update_flash_64(long long, long long);
+int rtas_ibm_update_flash_64_and_reboot(long long, long long);
+int rtas_system_reboot(void);
+int rtas_start_cpu (int, thread_t, int);
+int rtas_stop_self (void);
+int rtas_ibm_manage_flash(int);
+
+#endif
--- /dev/null
+/****************************************************************************
+ * YABEL BIOS Emulator
+ *
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Copyright (c) 2008 Pattrick Hueper <phueper@hueper.net>
+ ****************************************************************************/
+
+#ifndef _BIOSEMU_COMPAT_TIME_H
+#define _BIOSEMU_COMPAT_TIME_H
+
+/* TODO: check how this works in x86 */
+static unsigned long tb_freq = 0;
+#endif
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * Copyright (c) 2008, 2009 Pattrick Hueper <phueper@hueper.net>
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#ifndef CONFIG_COREBOOT_V2
+#include <cpu.h>
+#endif
+
+#include "debug.h"
+
+u32 debug_flags = 0;
+
+void
+dump(u8 * addr, u32 len)
+{
+ printf("\n%s(%p, %x):\n", __func__, addr, len);
+ while (len) {
+ unsigned int tmpCnt = len;
+ unsigned char x;
+ if (tmpCnt > 8)
+ tmpCnt = 8;
+ printf("\n%p: ", addr);
+ // print hex
+ while (tmpCnt--) {
+ set_ci();
+ x = *addr++;
+ clr_ci();
+ printf("%02x ", x);
+ }
+ tmpCnt = len;
+ if (tmpCnt > 8)
+ tmpCnt = 8;
+ len -= tmpCnt;
+ //reset addr ptr to print ascii
+ addr = addr - tmpCnt;
+ // print ascii
+ while (tmpCnt--) {
+ set_ci();
+ x = *addr++;
+ clr_ci();
+ if ((x < 32) || (x >= 127)) {
+ //non-printable char
+ x = '.';
+ }
+ printf("%c", x);
+ }
+ }
+ printf("\n");
+}
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net>
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+#ifndef _BIOSEMU_DEBUG_H_
+#define _BIOSEMU_DEBUG_H_
+
+#include <types.h>
+
+extern u32 debug_flags;
+// from x86emu...needed for debugging
+extern void x86emu_dump_xregs(void);
+
+/* printf is not available in coreboot... use printk */
+#ifdef CONFIG_COREBOOT_V2
+#include <console/console.h>
+#else
+#include <console.h>
+#endif
+/* uurgs... yuck... x86emu/x86emu.h is redefining printk... we include it here
+ * and use its redefinition of printk
+ * TODO: FIX!!!! */
+#include "x86emu/x86emu.h"
+#define printf printk
+
+/* PH: empty versions of set/clr_ci
+ * TODO: remove! */
+static inline void clr_ci(void) {};
+static inline void set_ci(void) {};
+
+/* Set CONFIG_YABEL_DEBUG_FLAGS is a binary switch that allows you
+ * to select the following items to debug. 1=on 0=off. After you
+ * decide what you want to debug create the binary value, convert to hex
+ * and set the Option (Ex. CONFIG_YABEL_DEBUG_FLAGS = 0x31FF //Debug All).
+ *
+ * |-DEBUG_JMP - print info about JMP and RETF opcodes from x86emu
+ * ||-DEBUG_TRACE_X86EMU - print _all_ opcodes that are executed by x86emu (WARNING: this will produce a LOT of output)
+ * |||-Currently unused
+ * ||||-Currently unused
+ * |||||-Currently unused
+ * ||||||-DEBUG_PNP - Print Plug And Play access made by option rom
+ * |||||||-DEBUG_DISK - Print Disk I/O related messages, currently unused
+ * ||||||||-DEBUG_PMM - Print messages related to POST Memory Manager (PMM)
+ * |||||||||-DEBUG_VBE - Print messages related to VESA BIOS Extension (VBE) functions
+ * ||||||||||-DEBUG_PRINT_INT10 - let INT10 (i.e. character output) calls print messages to Debug output
+ * |||||||||||-DEBUG_INTR - Print messages related to interrupt handling
+ * ||||||||||||-DEBUG_CHECK_VMEM_ACCESS - Print messages related to accesse to certain areas of the virtual Memory (e.g. BDA (BIOS Data Area) or Interrupt Vectors)
+ * |||||||||||||-DEBUG_MEM - Print memory access made by option rom (NOTE: this also includes accesses to fetch instructions)
+ * ||||||||||||||-DEBUG_IO - Print I/O access made by option rom
+ * 11000111111111 - Max Binary Value, Debug All (WARNING: - This could run for hours)
+ */
+
+#define DEBUG_IO 0x1
+#define DEBUG_MEM 0x2
+// set this to print messages for certain virtual memory accesses (Interrupt Vectors, ...)
+#define DEBUG_CHECK_VMEM_ACCESS 0x4
+#define DEBUG_INTR 0x8
+#define DEBUG_PRINT_INT10 0x10 // set to have the INT10 routine print characters
+#define DEBUG_VBE 0x20
+#define DEBUG_PMM 0x40
+#define DEBUG_DISK 0x80
+#define DEBUG_PNP 0x100
+
+#define DEBUG_TRACE_X86EMU 0x1000
+// set to enable tracing of JMPs in x86emu
+#define DEBUG_JMP 0x2000
+
+//#define CONFIG_DEBUG
+//#undef CONFIG_DEBUG
+#ifdef CONFIG_DEBUG
+
+#define CHECK_DBG(_flag) if (debug_flags & _flag)
+
+#define DEBUG_PRINTF(_x...) printf(_x);
+// prints the CS:IP before the printout, NOTE: actually its CS:IP of the _next_ instruction
+// to be executed, since the x86emu advances CS:IP _before_ actually executing an instruction
+#define DEBUG_PRINTF_CS_IP(_x...) DEBUG_PRINTF("%x:%x ", M.x86.R_CS, M.x86.R_IP); DEBUG_PRINTF(_x);
+
+#define DEBUG_PRINTF_IO(_x...) CHECK_DBG(DEBUG_IO) { DEBUG_PRINTF_CS_IP(_x) }
+#define DEBUG_PRINTF_MEM(_x...) CHECK_DBG(DEBUG_MEM) { DEBUG_PRINTF_CS_IP(_x) }
+#define DEBUG_PRINTF_INTR(_x...) CHECK_DBG(DEBUG_INTR) { DEBUG_PRINTF_CS_IP(_x) }
+#define DEBUG_PRINTF_VBE(_x...) CHECK_DBG(DEBUG_VBE) { DEBUG_PRINTF_CS_IP(_x) }
+#define DEBUG_PRINTF_PMM(_x...) CHECK_DBG(DEBUG_PMM) { DEBUG_PRINTF_CS_IP(_x) }
+#define DEBUG_PRINTF_DISK(_x...) CHECK_DBG(DEBUG_DISK) { DEBUG_PRINTF_CS_IP(_x) }
+#define DEBUG_PRINTF_PNP(_x...) CHECK_DBG(DEBUG_PNP) { DEBUG_PRINTF_CS_IP(_x) }
+
+#else
+
+#define CHECK_DBG(_flag) if (0)
+
+#define DEBUG_PRINTF(_x...)
+#define DEBUG_PRINTF_CS_IP(_x...)
+
+#define DEBUG_PRINTF_IO(_x...)
+#define DEBUG_PRINTF_MEM(_x...)
+#define DEBUG_PRINTF_INTR(_x...)
+#define DEBUG_PRINTF_VBE(_x...)
+#define DEBUG_PRINTF_PMM(_x...)
+#define DEBUG_PRINTF_DISK(_x...)
+#define DEBUG_PRINTF_PNP(_x...)
+
+#endif //CONFIG_DEBUG
+
+void dump(u8 * addr, u32 len);
+
+#endif
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * Copyright (c) 2008, 2009 Pattrick Hueper <phueper@hueper.net>
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+
+#include "device.h"
+#ifdef CONFIG_COREBOOT_V2
+#include "compat/rtas.h"
+#else
+#include "rtas.h"
+#endif
+#include <string.h>
+#include "debug.h"
+
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ops.h>
+#include <device/resource.h>
+
+/* the device we are working with... */
+biosemu_device_t bios_device;
+//max. 6 BARs and 1 Exp.ROM plus CfgSpace and 3 legacy ranges
+translate_address_t translate_address_array[11];
+u8 taa_last_entry;
+
+typedef struct {
+ u8 info;
+ u8 bus;
+ u8 devfn;
+ u8 cfg_space_offset;
+ u64 address;
+ u64 size;
+} __attribute__ ((__packed__)) assigned_address_t;
+
+#ifdef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+/* coreboot version */
+
+void
+biosemu_dev_get_addr_info(void)
+{
+ int taa_index = 0;
+ int i = 0;
+ struct resource *r;
+ u8 bus = bios_device.dev->bus->link;
+ u16 devfn = bios_device.dev->path.pci.devfn;
+
+ bios_device.bus = bus;
+ bios_device.devfn = devfn;
+
+ DEBUG_PRINTF("bus: %x, devfn: %x\n", bus, devfn);
+ for (i = 0; i < bios_device.dev->resources; i++) {
+ r = &bios_device.dev->resource[i];
+ translate_address_array[taa_index].info = r->flags;
+ translate_address_array[taa_index].bus = bus;
+ translate_address_array[taa_index].devfn = devfn;
+ translate_address_array[taa_index].cfg_space_offset =
+ r->index;
+ translate_address_array[taa_index].address = r->base;
+ translate_address_array[taa_index].size = r->size;
+ /* dont translate addresses... all addresses are 1:1 */
+ translate_address_array[taa_index].address_offset = 0;
+ taa_index++;
+ }
+ /* Expansion ROM */
+ translate_address_array[taa_index].info = IORESOURCE_MEM | IORESOURCE_READONLY;
+ translate_address_array[taa_index].bus = bus;
+ translate_address_array[taa_index].devfn = devfn;
+ translate_address_array[taa_index].cfg_space_offset = 0x30;
+ translate_address_array[taa_index].address = bios_device.dev->rom_address;
+ translate_address_array[taa_index].size = 0; /* TODO: do we need the size? */
+ /* dont translate addresses... all addresses are 1:1 */
+ translate_address_array[taa_index].address_offset = 0;
+ taa_index++;
+ /* legacy ranges if its a VGA card... */
+ if ((bios_device.dev->class & 0xFF0000) == 0x030000) {
+ DEBUG_PRINTF("%s: VGA device found, adding legacy resources... \n", __func__);
+ /* I/O 0x3B0-0x3BB */
+ translate_address_array[taa_index].info = IORESOURCE_FIXED | IORESOURCE_IO;
+ translate_address_array[taa_index].bus = bus;
+ translate_address_array[taa_index].devfn = devfn;
+ translate_address_array[taa_index].cfg_space_offset = 0;
+ translate_address_array[taa_index].address = 0x3b0;
+ translate_address_array[taa_index].size = 0xc;
+ /* dont translate addresses... all addresses are 1:1 */
+ translate_address_array[taa_index].address_offset = 0;
+ taa_index++;
+ /* I/O 0x3C0-0x3DF */
+ translate_address_array[taa_index].info = IORESOURCE_FIXED | IORESOURCE_IO;
+ translate_address_array[taa_index].bus = bus;
+ translate_address_array[taa_index].devfn = devfn;
+ translate_address_array[taa_index].cfg_space_offset = 0;
+ translate_address_array[taa_index].address = 0x3c0;
+ translate_address_array[taa_index].size = 0x20;
+ /* dont translate addresses... all addresses are 1:1 */
+ translate_address_array[taa_index].address_offset = 0;
+ taa_index++;
+ /* Mem 0xA0000-0xBFFFF */
+ translate_address_array[taa_index].info = IORESOURCE_FIXED | IORESOURCE_MEM;
+ translate_address_array[taa_index].bus = bus;
+ translate_address_array[taa_index].devfn = devfn;
+ translate_address_array[taa_index].cfg_space_offset = 0;
+ translate_address_array[taa_index].address = 0xa0000;
+ translate_address_array[taa_index].size = 0x20000;
+ /* dont translate addresses... all addresses are 1:1 */
+ translate_address_array[taa_index].address_offset = 0;
+ taa_index++;
+ }
+ // store last entry index of translate_address_array
+ taa_last_entry = taa_index - 1;
+#ifdef CONFIG_DEBUG
+ //dump translate_address_array
+ printf("translate_address_array: \n");
+ translate_address_t ta;
+ for (i = 0; i <= taa_last_entry; i++) {
+ ta = translate_address_array[i];
+ printf
+ ("%d: info: %08lx bus: %02x devfn: %02x cfg_space_offset: %02x\n\taddr: %016llx\n\toffs: %016llx\n\tsize: %016llx\n",
+ i, ta.info, ta.bus, ta.devfn, ta.cfg_space_offset,
+ ta.address, ta.address_offset, ta.size);
+ }
+#endif
+}
+#else
+// use translate_address_dev and get_puid from net-snk's net_support.c
+void translate_address_dev(u64 *, phandle_t);
+u64 get_puid(phandle_t node);
+
+
+// scan all adresses assigned to the device ("assigned-addresses" and "reg")
+// store in translate_address_array for faster translation using dev_translate_address
+void
+biosemu_dev_get_addr_info(void)
+{
+ // get bus/dev/fn from assigned-addresses
+ int32_t len;
+ //max. 6 BARs and 1 Exp.ROM plus CfgSpace and 3 legacy ranges
+ assigned_address_t buf[11];
+ len =
+ of_getprop(bios_device.phandle, "assigned-addresses", buf,
+ sizeof(buf));
+ bios_device.bus = buf[0].bus;
+ bios_device.devfn = buf[0].devfn;
+ DEBUG_PRINTF("bus: %x, devfn: %x\n", bios_device.bus,
+ bios_device.devfn);
+ //store address translations for all assigned-addresses and regs in
+ //translate_address_array for faster translation later on...
+ int i = 0;
+ // index to insert data into translate_address_array
+ int taa_index = 0;
+ u64 address_offset;
+ for (i = 0; i < (len / sizeof(assigned_address_t)); i++, taa_index++) {
+ //copy all info stored in assigned-addresses
+ translate_address_array[taa_index].info = buf[i].info;
+ translate_address_array[taa_index].bus = buf[i].bus;
+ translate_address_array[taa_index].devfn = buf[i].devfn;
+ translate_address_array[taa_index].cfg_space_offset =
+ buf[i].cfg_space_offset;
+ translate_address_array[taa_index].address = buf[i].address;
+ translate_address_array[taa_index].size = buf[i].size;
+ // translate first address and store it as address_offset
+ address_offset = buf[i].address;
+ translate_address_dev(&address_offset, bios_device.phandle);
+ translate_address_array[taa_index].address_offset =
+ address_offset - buf[i].address;
+ }
+ //get "reg" property
+ len = of_getprop(bios_device.phandle, "reg", buf, sizeof(buf));
+ for (i = 0; i < (len / sizeof(assigned_address_t)); i++) {
+ if ((buf[i].size == 0) || (buf[i].cfg_space_offset != 0)) {
+ // we dont care for ranges with size 0 and
+ // BARs and Expansion ROM must be in assigned-addresses... so in reg
+ // we only look for those without config space offset set...
+ // i.e. the legacy ranges
+ continue;
+ }
+ //copy all info stored in assigned-addresses
+ translate_address_array[taa_index].info = buf[i].info;
+ translate_address_array[taa_index].bus = buf[i].bus;
+ translate_address_array[taa_index].devfn = buf[i].devfn;
+ translate_address_array[taa_index].cfg_space_offset =
+ buf[i].cfg_space_offset;
+ translate_address_array[taa_index].address = buf[i].address;
+ translate_address_array[taa_index].size = buf[i].size;
+ // translate first address and store it as address_offset
+ address_offset = buf[i].address;
+ translate_address_dev(&address_offset, bios_device.phandle);
+ translate_address_array[taa_index].address_offset =
+ address_offset - buf[i].address;
+ taa_index++;
+ }
+ // store last entry index of translate_address_array
+ taa_last_entry = taa_index - 1;
+#ifdef CONFIG_DEBUG
+ //dump translate_address_array
+ printf("translate_address_array: \n");
+ translate_address_t ta;
+ for (i = 0; i <= taa_last_entry; i++) {
+ ta = translate_address_array[i];
+ printf
+ ("%d: %02x%02x%02x%02x\n\taddr: %016llx\n\toffs: %016llx\n\tsize: %016llx\n",
+ i, ta.info, ta.bus, ta.devfn, ta.cfg_space_offset,
+ ta.address, ta.address_offset, ta.size);
+ }
+#endif
+}
+#endif
+
+// to simulate accesses to legacy VGA Memory (0xA0000-0xBFFFF)
+// we look for the first prefetchable memory BAR, if no prefetchable BAR found,
+// we use the first memory BAR
+// dev_translate_addr will translate accesses to the legacy VGA Memory into the found vmem BAR
+void
+biosemu_dev_find_vmem_addr(void)
+{
+ int i = 0;
+ translate_address_t ta;
+ s8 tai_np = -1, tai_p = -1; // translate_address_array index for non-prefetchable and prefetchable memory
+ //search backwards to find first entry
+ for (i = taa_last_entry; i >= 0; i--) {
+ ta = translate_address_array[i];
+ if ((ta.cfg_space_offset >= 0x10)
+ && (ta.cfg_space_offset <= 0x24)) {
+ //only BARs
+ if ((ta.info & 0x03) >= 0x02) {
+ //32/64bit memory
+ tai_np = i;
+ if ((ta.info & 0x40) != 0) {
+ // prefetchable
+ tai_p = i;
+ }
+ }
+ }
+ }
+ if (tai_p != -1) {
+ ta = translate_address_array[tai_p];
+ bios_device.vmem_addr = ta.address;
+ bios_device.vmem_size = ta.size;
+ DEBUG_PRINTF
+ ("%s: Found prefetchable Virtual Legacy Memory BAR: %llx, size: %llx\n",
+ __func__, bios_device.vmem_addr,
+ bios_device.vmem_size);
+ } else if (tai_np != -1) {
+ ta = translate_address_array[tai_np];
+ bios_device.vmem_addr = ta.address;
+ bios_device.vmem_size = ta.size;
+ DEBUG_PRINTF
+ ("%s: Found non-prefetchable Virtual Legacy Memory BAR: %llx, size: %llx",
+ __func__, bios_device.vmem_addr,
+ bios_device.vmem_size);
+ }
+ // disable vmem
+ //bios_device.vmem_size = 0;
+}
+
+#ifndef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+void
+biosemu_dev_get_puid(void)
+{
+ // get puid
+ bios_device.puid = get_puid(bios_device.phandle);
+ DEBUG_PRINTF("puid: 0x%llx\n", bios_device.puid);
+}
+#endif
+
+void
+biosemu_dev_get_device_vendor_id(void)
+{
+
+ u32 pci_config_0;
+#ifdef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ pci_config_0 = pci_read_config32(bios_device.dev, 0x0);
+#else
+ pci_config_0 =
+ rtas_pci_config_read(bios_device.puid, 4, bios_device.bus,
+ bios_device.devfn, 0x0);
+#endif
+ bios_device.pci_device_id =
+ (u16) ((pci_config_0 & 0xFFFF0000) >> 16);
+ bios_device.pci_vendor_id = (u16) (pci_config_0 & 0x0000FFFF);
+ DEBUG_PRINTF("PCI Device ID: %04x, PCI Vendor ID: %x\n",
+ bios_device.pci_device_id, bios_device.pci_vendor_id);
+}
+
+/* Check whether the device has a valid Expansion ROM and search the PCI Data
+ * Structure and any Expansion ROM Header (using dev_scan_exp_header()) for
+ * needed information. If the rom_addr parameter is != 0, it is the address of
+ * the Expansion ROM image and will be used, if it is == 0, the Expansion ROM
+ * BAR address will be used.
+ */
+u8
+biosemu_dev_check_exprom(unsigned long rom_base_addr)
+{
+ int i = 0;
+ translate_address_t ta;
+ u16 pci_ds_offset;
+ pci_data_struct_t pci_ds;
+ if (rom_base_addr == 0) {
+ // check for ExpROM Address (Offset 30) in taa
+ for (i = 0; i <= taa_last_entry; i++) {
+ ta = translate_address_array[i];
+ if (ta.cfg_space_offset == 0x30) {
+ //translated address
+ rom_base_addr = ta.address + ta.address_offset;
+ break;
+ }
+ }
+ }
+ /* In the ROM there could be multiple Expansion ROM Images... start
+ * searching them for an x86 image.
+ */
+ do {
+ if (rom_base_addr == 0) {
+ printf("Error: no Expansion ROM address found!\n");
+ return -1;
+ }
+ set_ci();
+ u16 rom_signature = in16le((void *) rom_base_addr);
+ clr_ci();
+ if (rom_signature != 0xaa55) {
+ printf
+ ("Error: invalid Expansion ROM signature: %02x!\n",
+ *((u16 *) rom_base_addr));
+ return -1;
+ }
+ set_ci();
+ // at offset 0x18 is the (16bit little-endian) pointer to the PCI Data Structure
+ pci_ds_offset = in16le((void *) (rom_base_addr + 0x18));
+ //copy the PCI Data Structure
+ memcpy(&pci_ds, (void *) (rom_base_addr + pci_ds_offset),
+ sizeof(pci_ds));
+ clr_ci();
+#ifdef CONFIG_DEBUG
+ DEBUG_PRINTF("PCI Data Structure @%lx:\n",
+ rom_base_addr + pci_ds_offset);
+ dump((void *) &pci_ds, sizeof(pci_ds));
+#endif
+ if (strncmp((const char *) pci_ds.signature, "PCIR", 4) != 0) {
+ printf("Invalid PCI Data Structure found!\n");
+ break;
+ }
+ //little-endian conversion
+ pci_ds.vendor_id = in16le(&pci_ds.vendor_id);
+ pci_ds.device_id = in16le(&pci_ds.device_id);
+ pci_ds.img_length = in16le(&pci_ds.img_length);
+ pci_ds.pci_ds_length = in16le(&pci_ds.pci_ds_length);
+ if (pci_ds.vendor_id != bios_device.pci_vendor_id) {
+ printf
+ ("Image has invalid Vendor ID: %04x, expected: %04x\n",
+ pci_ds.vendor_id, bios_device.pci_vendor_id);
+ break;
+ }
+ if (pci_ds.device_id != bios_device.pci_device_id) {
+ printf
+ ("Image has invalid Device ID: %04x, expected: %04x\n",
+ pci_ds.device_id, bios_device.pci_device_id);
+ break;
+ }
+ DEBUG_PRINTF("Image Length: %d\n", pci_ds.img_length * 512);
+ DEBUG_PRINTF("Image Code Type: %d\n", pci_ds.code_type);
+ if (pci_ds.code_type == 0) {
+ //x86 image
+ //store image address and image length in bios_device struct
+ bios_device.img_addr = rom_base_addr;
+ bios_device.img_size = pci_ds.img_length * 512;
+ // we found the image, exit the loop
+ break;
+ } else {
+ // no x86 image, check next image (if any)
+ rom_base_addr += pci_ds.img_length * 512;
+ }
+ if ((pci_ds.indicator & 0x80) == 0x80) {
+ //last image found, exit the loop
+ DEBUG_PRINTF("Last PCI Expansion ROM Image found.\n");
+ break;
+ }
+ }
+ while (bios_device.img_addr == 0);
+ // in case we did not find a valid x86 Expansion ROM Image
+ if (bios_device.img_addr == 0) {
+ printf("Error: no valid x86 Expansion ROM Image found!\n");
+ return -1;
+ }
+ return 0;
+}
+
+u8
+biosemu_dev_init(struct device * device)
+{
+ u8 rval = 0;
+ //init bios_device struct
+#ifdef CONFIG_COREBOOT_V2
+ DEBUG_PRINTF("%s\n", __func__);
+#else
+ DEBUG_PRINTF("%s(%s)\n", __func__, device->dtsname);
+#endif
+ memset(&bios_device, 0, sizeof(bios_device));
+
+#ifndef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ bios_device.ihandle = of_open(device_name);
+ if (bios_device.ihandle == 0) {
+ DEBUG_PRINTF("%s is no valid device!\n", device_name);
+ return -1;
+ }
+ bios_device.phandle = of_finddevice(device_name);
+#else
+ bios_device.dev = device;
+#endif
+ biosemu_dev_get_addr_info();
+#ifndef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ biosemu_dev_find_vmem_addr();
+ biosemu_dev_get_puid();
+#endif
+ biosemu_dev_get_device_vendor_id();
+ return rval;
+}
+
+// translate address function using translate_address_array assembled
+// by dev_get_addr_info... MUCH faster than calling translate_address_dev
+// and accessing client interface for every translation...
+// returns: 0 if addr not found in translate_address_array, 1 if found.
+u8
+biosemu_dev_translate_address(unsigned long * addr)
+{
+ int i = 0;
+ translate_address_t ta;
+#ifndef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ /* we dont need this hack for coreboot... we can access legacy areas */
+ //check if it is an access to legacy VGA Mem... if it is, map the address
+ //to the vmem BAR and then translate it...
+ // (translation info provided by Ben Herrenschmidt)
+ // NOTE: the translation seems to only work for NVIDIA cards... but it is needed
+ // to make some NVIDIA cards work at all...
+ if ((bios_device.vmem_size > 0)
+ && ((*addr >= 0xA0000) && (*addr < 0xB8000))) {
+ *addr = (*addr - 0xA0000) * 4 + 2 + bios_device.vmem_addr;
+ }
+ if ((bios_device.vmem_size > 0)
+ && ((*addr >= 0xB8000) && (*addr < 0xC0000))) {
+ u8 shift = *addr & 1;
+ *addr &= 0xfffffffe;
+ *addr = (*addr - 0xB8000) * 4 + shift + bios_device.vmem_addr;
+ }
+#endif
+ for (i = 0; i <= taa_last_entry; i++) {
+ ta = translate_address_array[i];
+ if ((*addr >= ta.address) && (*addr <= (ta.address + ta.size))) {
+ *addr += ta.address_offset;
+ return 1;
+ }
+ }
+ return 0;
+}
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * Copyright (c) 2008, 2009 Pattrick Hueper <phueper@hueper.net>
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#ifndef DEVICE_LIB_H
+#define DEVICE_LIB_H
+
+#include <types.h>
+#ifdef CONFIG_COREBOOT_V2
+#include <arch/byteorder.h>
+#include "compat/of.h"
+#else
+#include <cpu.h>
+#include <byteorder.h>
+#include "of.h"
+#endif
+#include "debug.h"
+
+
+// a Expansion Header Struct as defined in Plug and Play BIOS Spec 1.0a Chapter 3.2
+typedef struct {
+ char signature[4]; // signature
+ u8 structure_revision;
+ u8 length; // in 16 byte blocks
+ u16 next_header_offset; // offset to next Expansion Header as 16bit little-endian value, as offset from the start of the Expansion ROM
+ u8 reserved;
+ u8 checksum; // the sum of all bytes of the Expansion Header must be 0
+ u32 device_id; // PnP Device ID as 32bit little-endian value
+ u16 p_manufacturer_string; //16bit little-endian offset from start of Expansion ROM
+ u16 p_product_string; //16bit little-endian offset from start of Expansion ROM
+ u8 device_base_type;
+ u8 device_sub_type;
+ u8 device_if_type;
+ u8 device_indicators;
+ // the following vectors are all 16bit little-endian offsets from start of Expansion ROM
+ u16 bcv; // Boot Connection Vector
+ u16 dv; // Disconnect Vector
+ u16 bev; // Bootstrap Entry Vector
+ u16 reserved_2;
+ u16 sriv; // Static Resource Information Vector
+} __attribute__ ((__packed__)) exp_header_struct_t;
+
+// a PCI Data Struct as defined in PCI 2.3 Spec Chapter 6.3.1.2
+typedef struct {
+ u8 signature[4]; // signature, the String "PCIR"
+ u16 vendor_id;
+ u16 device_id;
+ u16 reserved;
+ u16 pci_ds_length; // PCI Data Structure Length, 16bit little-endian value
+ u8 pci_ds_revision;
+ u8 class_code[3];
+ u16 img_length; // length of the Exp.ROM Image, 16bit little-endian value in 512 bytes
+ u16 img_revision;
+ u8 code_type;
+ u8 indicator;
+ u16 reserved_2;
+} __attribute__ ((__packed__)) pci_data_struct_t;
+
+typedef struct {
+ u8 bus;
+ u8 devfn;
+#ifdef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ struct device* dev;
+#else
+ u64 puid;
+ phandle_t phandle;
+ ihandle_t ihandle;
+#endif
+ // store the address of the BAR that is used to simulate
+ // legacy VGA memory accesses
+ u64 vmem_addr;
+ u64 vmem_size;
+ // used to buffer I/O Accesses, that do not access the I/O Range of the device...
+ // 64k might be overkill, but we can buffer all I/O accesses...
+ u8 io_buffer[64 * 1024];
+ u16 pci_vendor_id;
+ u16 pci_device_id;
+ // translated address of the "PC-Compatible" Expansion ROM Image for this device
+ unsigned long img_addr;
+ u32 img_size; // size of the Expansion ROM Image (read from the PCI Data Structure)
+} biosemu_device_t;
+
+typedef struct {
+#ifdef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ unsigned long info;
+#else
+ u8 info;
+#endif
+ u8 bus;
+ u8 devfn;
+ u8 cfg_space_offset;
+ u64 address;
+ u64 address_offset;
+ u64 size;
+} __attribute__ ((__packed__)) translate_address_t;
+
+// array to store address translations for this
+// device. Needed for faster address translation, so
+// not every I/O or Memory Access needs to call translate_address_dev
+// and access the device tree
+// 6 BARs, 1 Exp. ROM, 1 Cfg.Space, and 3 Legacy
+// translations are supported... this should be enough for
+// most devices... for VGA it is enough anyways...
+extern translate_address_t translate_address_array[11];
+
+// index of last translate_address_array entry
+// set by get_dev_addr_info function
+extern u8 taa_last_entry;
+
+/* the device we are working with... */
+extern biosemu_device_t bios_device;
+
+u8 biosemu_dev_init(struct device * device);
+// NOTE: for dev_check_exprom to work, biosemu_dev_init MUST be called first!
+u8 biosemu_dev_check_exprom(unsigned long rom_base_addr);
+
+u8 biosemu_dev_translate_address(unsigned long * addr);
+
+/* endianness swap functions for 16 and 32 bit words
+ * copied from axon_pciconfig.c
+ */
+static inline void
+out32le(void *addr, u32 val)
+{
+#ifdef __i386
+ *((u32*) addr) = cpu_to_le32(val);
+#else
+ asm volatile ("stwbrx %0, 0, %1"::"r" (val), "r"(addr));
+#endif
+}
+
+static inline u32
+in32le(void *addr)
+{
+ u32 val;
+#ifdef __i386
+ val = cpu_to_le32(*((u32 *) addr));
+#else
+ asm volatile ("lwbrx %0, 0, %1":"=r" (val):"r"(addr));
+#endif
+ return val;
+}
+
+static inline void
+out16le(void *addr, u16 val)
+{
+#ifdef __i386
+ *((u16*) addr) = cpu_to_le16(val);
+#else
+ asm volatile ("sthbrx %0, 0, %1"::"r" (val), "r"(addr));
+#endif
+}
+
+static inline u16
+in16le(void *addr)
+{
+ u16 val;
+#ifdef __i386
+ val = cpu_to_le16(*((u16*) addr));
+#else
+ asm volatile ("lhbrx %0, 0, %1":"=r" (val):"r"(addr));
+#endif
+ return val;
+}
+
+/* debug function, dumps HID1 and HID4 to detect whether caches are on/off */
+static inline void
+dumpHID(void)
+{
+ u64 hid;
+ //HID1 = 1009
+ __asm__ __volatile__("mfspr %0, 1009":"=r"(hid));
+ printf("HID1: %016llx\n", hid);
+ //HID4 = 1012
+ __asm__ __volatile__("mfspr %0, 1012":"=r"(hid));
+ printf("HID4: %016llx\n", hid);
+}
+
+#endif
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * Copyright (c) 2008, 2009 Pattrick Hueper <phueper@hueper.net>
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#ifdef CONFIG_COREBOOT_V2
+#include "compat/rtas.h"
+#else
+#include <rtas.h>
+#endif
+
+#include "biosemu.h"
+#include "mem.h"
+#include "device.h"
+#include "debug.h"
+#include "pmm.h"
+
+#include <x86emu/x86emu.h>
+#ifdef CONFIG_COREBOOT_V2
+#include "../x86emu/prim_ops.h"
+#else
+#include <x86emu/prim_ops.h>
+#endif
+
+#ifdef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+#include <device/pci.h>
+#include <device/pci_ops.h>
+#endif
+
+
+//setup to run the code at the address, that the Interrupt Vector points to...
+void
+setupInt(int intNum)
+{
+ DEBUG_PRINTF_INTR("%s(%x): executing interrupt handler @%08x\n",
+ __func__, intNum, my_rdl(intNum * 4));
+ // push current R_FLG... will be popped by IRET
+ push_word((u16) M.x86.R_FLG);
+ CLEAR_FLAG(F_IF);
+ CLEAR_FLAG(F_TF);
+ // push current CS:IP to the stack, will be popped by IRET
+ push_word(M.x86.R_CS);
+ push_word(M.x86.R_IP);
+ // set CS:IP to the interrupt handler address... so the next executed instruction will
+ // be the interrupt handler
+ M.x86.R_CS = my_rdw(intNum * 4 + 2);
+ M.x86.R_IP = my_rdw(intNum * 4);
+}
+
+// handle int10 (VGA BIOS Interrupt)
+void
+handleInt10(void)
+{
+ // the data for INT10 is stored in BDA (0000:0400h) offset 49h-66h
+ // function number in AH
+ //DEBUG_PRINTF_CS_IP("%s:\n", __func__);
+ //x86emu_dump_xregs();
+ //if ((M.x86.R_IP == 0x32c2) && (M.x86.R_SI == 0x1ce2)){
+ //X86EMU_trace_on();
+ //M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F;
+ //}
+ switch (M.x86.R_AH) {
+ case 0x00:
+ // set video mode
+ // BDA offset 49h is current video mode
+ my_wrb(0x449, M.x86.R_AL);
+ if (M.x86.R_AL > 7)
+ M.x86.R_AL = 0x20;
+ else if (M.x86.R_AL == 6)
+ M.x86.R_AL = 0x3f;
+ else
+ M.x86.R_AL = 0x30;
+ break;
+ case 0x01:
+ // set cursor shape
+ // ignore
+ break;
+ case 0x02:
+ // set cursor position
+ // BH: pagenumber, DX: cursor_pos (DH:row, DL:col)
+ // BDA offset 50h-60h are 8 cursor position words for
+ // eight possible video pages
+ my_wrw(0x450 + (M.x86.R_BH * 2), M.x86.R_DX);
+ break;
+ case 0x03:
+ //get cursor position
+ // BH: pagenumber
+ // BDA offset 50h-60h are 8 cursor position words for
+ // eight possible video pages
+ M.x86.R_AX = 0;
+ M.x86.R_CH = 0; // start scan line ???
+ M.x86.R_CL = 0; // end scan line ???
+ M.x86.R_DX = my_rdw(0x450 + (M.x86.R_BH * 2));
+ break;
+ case 0x05:
+ // set active page
+ // BDA offset 62h is current page number
+ my_wrb(0x462, M.x86.R_AL);
+ break;
+ case 0x06:
+ //scroll up windows
+ break;
+ case 0x07:
+ //scroll down windows
+ break;
+ case 0x08:
+ //read character and attribute at position
+ M.x86.R_AH = 0x07; // white-on-black
+ M.x86.R_AL = 0x20; // a space...
+ break;
+ case 0x09:
+ // write character and attribute
+ //AL: char, BH: page number, BL: attribute, CX: number of times to write
+ //BDA offset 62h is current page number
+ CHECK_DBG(DEBUG_PRINT_INT10) {
+ u32 i = 0;
+ if (M.x86.R_BH == my_rdb(0x462)) {
+ for (i = 0; i < M.x86.R_CX; i++)
+ printf("%c", M.x86.R_AL);
+ }
+ }
+ break;
+ case 0x0a:
+ // write character
+ //AL: char, BH: page number, BL: attribute, CX: number of times to write
+ //BDA offset 62h is current page number
+ CHECK_DBG(DEBUG_PRINT_INT10) {
+ u32 i = 0;
+ if (M.x86.R_BH == my_rdb(0x462)) {
+ for (i = 0; i < M.x86.R_CX; i++)
+ printf("%c", M.x86.R_AL);
+ }
+ }
+ break;
+ case 0x0e:
+ // teletype output: write character and advance cursor...
+ //AL: char, BH: page number, BL: attribute
+ //BDA offset 62h is current page number
+ CHECK_DBG(DEBUG_PRINT_INT10) {
+ // we ignore the pagenumber on this call...
+ //if (M.x86.R_BH == my_rdb(0x462))
+ {
+ printf("%c", M.x86.R_AL);
+ // for debugging, to read all lines
+ //if (M.x86.R_AL == 0xd) // carriage return
+ // printf("\n");
+ }
+ }
+ break;
+ case 0x0f:
+ // get video mode
+ // BDA offset 49h is current video mode
+ // BDA offset 62h is current page number
+ // BDA offset 4ah is columns on screen
+ M.x86.R_AH = 80; //number of character columns... we hardcode it to 80
+ M.x86.R_AL = my_rdb(0x449);
+ M.x86.R_BH = my_rdb(0x462);
+ break;
+ default:
+ printf("%s(): unknown function (%x) for int10 handler.\n",
+ __func__, M.x86.R_AH);
+ DEBUG_PRINTF_INTR("AX=%04x BX=%04x CX=%04x DX=%04x\n",
+ M.x86.R_AX, M.x86.R_BX, M.x86.R_CX,
+ M.x86.R_DX);
+ HALT_SYS();
+ break;
+ }
+}
+
+// this table translates ASCII chars into their XT scan codes:
+static u8 keycode_table[256] = {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0 - 7
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 8 - 15
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 16 - 23
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 24 - 31
+ 0x39, 0x02, 0x28, 0x04, 0x05, 0x06, 0x08, 0x28, // 32 - 39
+ 0x0a, 0x0b, 0x09, 0x2b, 0x33, 0x0d, 0x34, 0x35, // 40 - 47
+ 0x0b, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, // 48 - 55
+ 0x09, 0x0a, 0x27, 0x27, 0x33, 0x2b, 0x34, 0x35, // 56 - 63
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 64 - 71
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 72 - 79
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 80 - 87
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 88 - 95
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 96 - 103
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 104 - 111
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 112 - 119
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 120 - 127
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ...
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+}
+
+;
+
+void
+translate_keycode(u64 * keycode)
+{
+ u8 scan_code = 0;
+ u8 char_code = 0;
+ if (*keycode < 256) {
+ scan_code = keycode_table[*keycode];
+ char_code = (u8) * keycode & 0xff;
+ } else {
+ switch (*keycode) {
+ case 0x1b50:
+ // F1
+ scan_code = 0x3b;
+ char_code = 0x0;
+ break;
+ default:
+ printf("%s(): unknown multibyte keycode: %llx\n",
+ __func__, *keycode);
+ break;
+ }
+ }
+ //assemble scan/char code in keycode
+ *keycode = (u64) ((((u16) scan_code) << 8) | char_code);
+}
+
+// handle int16 (Keyboard BIOS Interrupt)
+void
+handleInt16(void)
+{
+ // keyboard buffer is in BIOS Memory Area:
+ // offset 0x1a (WORD) pointer to next char in keybuffer
+ // offset 0x1c (WORD) pointer to next insert slot in keybuffer
+ // offset 0x1e-0x3e: 16 WORD Ring Buffer
+ // since we currently always read the char from the FW buffer,
+ // we misuse the ring buffer, we use it as pointer to a u64 that stores
+ // multi-byte keys (e.g. special keys in VT100 terminal)
+ // and as long as a key is available (not 0) we dont read further keys
+ u64 *keycode = (u64 *) (M.mem_base + 0x41e);
+ s8 c;
+ // function number in AH
+ DEBUG_PRINTF_INTR("%s(): Keyboard Interrupt: function: %x.\n",
+ __func__, M.x86.R_AH);
+ DEBUG_PRINTF_INTR("AX=%04x BX=%04x CX=%04x DX=%04x\n", M.x86.R_AX,
+ M.x86.R_BX, M.x86.R_CX, M.x86.R_DX);
+ switch (M.x86.R_AH) {
+ case 0x00:
+ // get keystroke
+ if (*keycode) {
+ M.x86.R_AX = (u16) * keycode;
+ // clear keycode
+ *keycode = 0;
+ } else {
+ M.x86.R_AH = 0x61; // scancode for space key
+ M.x86.R_AL = 0x20; // a space
+ }
+ break;
+ case 0x01:
+ // check keystroke
+ // ZF set = no keystroke
+ // read first byte of key code
+ if (*keycode) {
+ // already read, but not yet taken
+ CLEAR_FLAG(F_ZF);
+ M.x86.R_AX = (u16) * keycode;
+ } else {
+ /* TODO: we need getchar... */
+ c = -1; //getchar();
+ if (c == -1) {
+ // no key available
+ SET_FLAG(F_ZF);
+ } else {
+ *keycode = c;
+
+ // since after an ESC it may take a while to receive the next char,
+ // we send something that is not shown on the screen, and then try to get
+ // the next char
+ // TODO: only after ESC?? what about other multibyte keys
+ printf("tt%c%c", 0x08, 0x08); // 0x08 == Backspace
+
+ /* TODO: we need getchar... */
+ while ((c = -1 /*getchar()*/) != -1) {
+ *keycode = (*keycode << 8) | c;
+ DEBUG_PRINTF(" key read: %0llx\n",
+ *keycode);
+ }
+ translate_keycode(keycode);
+ DEBUG_PRINTF(" translated key: %0llx\n",
+ *keycode);
+ if (*keycode == 0) {
+ //not found
+ SET_FLAG(F_ZF);
+ } else {
+ CLEAR_FLAG(F_ZF);
+ M.x86.R_AX = (u16) * keycode;
+ //X86EMU_trace_on();
+ //M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F;
+ }
+ }
+ }
+ break;
+ default:
+ printf("%s(): unknown function (%x) for int16 handler.\n",
+ __func__, M.x86.R_AH);
+ DEBUG_PRINTF_INTR("AX=%04x BX=%04x CX=%04x DX=%04x\n",
+ M.x86.R_AX, M.x86.R_BX, M.x86.R_CX,
+ M.x86.R_DX);
+ HALT_SYS();
+ break;
+ }
+}
+
+// handle int1a (PCI BIOS Interrupt)
+void
+handleInt1a(void)
+{
+ // function number in AX
+ u8 bus, devfn, offs;
+ struct device* dev;
+ switch (M.x86.R_AX) {
+ case 0xb101:
+ // Installation check
+ CLEAR_FLAG(F_CF); // clear CF
+ M.x86.R_EDX = 0x20494350; // " ICP" endian swapped "PCI "
+ M.x86.R_AL = 0x1; // Config Space Mechanism 1 supported
+ M.x86.R_BX = 0x0210; // PCI Interface Level Version 2.10
+ M.x86.R_CL = 0xff; // number of last PCI Bus in system TODO: check!
+ break;
+ case 0xb102:
+ // Find PCI Device
+ // device_id in CX, vendor_id in DX
+ // device index in SI (i.e. if multiple devices with same vendor/device id
+ // are connected). We currently only support device index 0
+ //
+ DEBUG_PRINTF_INTR("%s(): function: %x: PCI Find Device\n",
+ __func__, M.x86.R_AX);
+ /* FixME: support SI != 0 */
+#if defined(CONFIG_YABEL_PCI_ACCESS_OTHER_DEVICES) && CONFIG_YABEL_PCI_ACCESS_OTHER_DEVICES==1
+#ifdef CONFIG_COREBOOT_V2
+ dev = dev_find_device(M.x86.R_DX, M.x86.R_CX, 0);
+#else
+ dev = dev_find_pci_device(M.x86.R_DX, M.x86.R_CX, 0);
+#endif
+ if (dev != 0) {
+ DEBUG_PRINTF_INTR
+ ("%s(): function %x: PCI Find Device --> 0x%04x\n",
+ __func__, M.x86.R_AX, M.x86.R_BX);
+
+ M.x86.R_BH = dev->bus->secondary;
+ M.x86.R_BL = dev->path.pci.devfn;
+ M.x86.R_AH = 0x00; // return code: success
+ CLEAR_FLAG(F_CF);
+#else
+ // only allow the device to find itself...
+ if ((M.x86.R_CX == bios_device.pci_device_id)
+ && (M.x86.R_DX == bios_device.pci_vendor_id)
+ // device index must be 0
+ && (M.x86.R_SI == 0)) {
+ CLEAR_FLAG(F_CF);
+ M.x86.R_AH = 0x00; // return code: success
+ M.x86.R_BH = bios_device.bus;
+ M.x86.R_BL = bios_device.devfn;
+#endif
+ } else {
+ DEBUG_PRINTF_INTR
+ ("%s(): function %x: invalid device/vendor/device index! (%04x/%04x/%02x expected: %04x/%04x/00) \n",
+ __func__, M.x86.R_AX, M.x86.R_CX, M.x86.R_DX,
+ M.x86.R_SI, bios_device.pci_device_id,
+ bios_device.pci_vendor_id);
+
+ SET_FLAG(F_CF);
+ M.x86.R_AH = 0x86; // return code: device not found
+ }
+ break;
+ case 0xb108: //read configuration byte
+ case 0xb109: //read configuration word
+ case 0xb10a: //read configuration dword
+ bus = M.x86.R_BH;
+ devfn = M.x86.R_BL;
+ offs = M.x86.R_DI;
+ DEBUG_PRINTF_INTR("%s(): function: %x: PCI Config Read from device: bus: %02x, devfn: %02x, offset: %02x\n",
+ __func__, M.x86.R_AX, bus, devfn, offs);
+#if defined(CONFIG_YABEL_PCI_ACCESS_OTHER_DEVICES) && CONFIG_YABEL_PCI_ACCESS_OTHER_DEVICES==1
+ dev = dev_find_slot(bus, devfn);
+ DEBUG_PRINTF_INTR("%s(): function: %x: dev_find_slot() returned: %s\n",
+ __func__, M.x86.R_AX, dev_path(dev));
+ if (dev == 0) {
+ // fail accesses to non-existent devices...
+#else
+ dev = bios_device.dev;
+ if ((bus != bios_device.bus)
+ || (devfn != bios_device.devfn)) {
+ // fail accesses to any device but ours...
+#endif
+ printf
+ ("%s(): Config read access invalid device! bus: %02x (%02x), devfn: %02x (%02x), offs: %02x\n",
+ __func__, bus, bios_device.bus, devfn,
+ bios_device.devfn, offs);
+ SET_FLAG(F_CF);
+ M.x86.R_AH = 0x87; //return code: bad pci register
+ HALT_SYS();
+ return;
+ } else {
+ switch (M.x86.R_AX) {
+ case 0xb108:
+ M.x86.R_CL =
+#ifdef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ pci_read_config8(dev, offs);
+#else
+ (u8) rtas_pci_config_read(bios_device.
+ puid, 1,
+ bus, devfn,
+ offs);
+#endif
+ DEBUG_PRINTF_INTR
+ ("%s(): function %x: PCI Config Read @%02x --> 0x%02x\n",
+ __func__, M.x86.R_AX, offs,
+ M.x86.R_CL);
+ break;
+ case 0xb109:
+ M.x86.R_CX =
+#ifdef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ pci_read_config16(dev, offs);
+#else
+ (u16) rtas_pci_config_read(bios_device.
+ puid, 2,
+ bus, devfn,
+ offs);
+#endif
+ DEBUG_PRINTF_INTR
+ ("%s(): function %x: PCI Config Read @%02x --> 0x%04x\n",
+ __func__, M.x86.R_AX, offs,
+ M.x86.R_CX);
+ break;
+ case 0xb10a:
+ M.x86.R_ECX =
+#ifdef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ pci_read_config32(dev, offs);
+#else
+ (u32) rtas_pci_config_read(bios_device.
+ puid, 4,
+ bus, devfn,
+ offs);
+#endif
+ DEBUG_PRINTF_INTR
+ ("%s(): function %x: PCI Config Read @%02x --> 0x%08x\n",
+ __func__, M.x86.R_AX, offs,
+ M.x86.R_ECX);
+ break;
+ }
+ CLEAR_FLAG(F_CF);
+ M.x86.R_AH = 0x0; // return code: success
+ }
+ break;
+ case 0xb10b: //write configuration byte
+ case 0xb10c: //write configuration word
+ case 0xb10d: //write configuration dword
+ bus = M.x86.R_BH;
+ devfn = M.x86.R_BL;
+ offs = M.x86.R_DI;
+ if ((bus != bios_device.bus)
+ || (devfn != bios_device.devfn)) {
+ // fail accesses to any device but ours...
+ printf
+ ("%s(): Config read access invalid! bus: %x (%x), devfn: %x (%x), offs: %x\n",
+ __func__, bus, bios_device.bus, devfn,
+ bios_device.devfn, offs);
+ SET_FLAG(F_CF);
+ M.x86.R_AH = 0x87; //return code: bad pci register
+ HALT_SYS();
+ return;
+ } else {
+ switch (M.x86.R_AX) {
+ case 0xb10b:
+#ifdef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ pci_write_config8(bios_device.dev, offs, M.x86.R_CL);
+#else
+ rtas_pci_config_write(bios_device.puid, 1, bus,
+ devfn, offs, M.x86.R_CL);
+#endif
+ DEBUG_PRINTF_INTR
+ ("%s(): function %x: PCI Config Write @%02x <-- 0x%02x\n",
+ __func__, M.x86.R_AX, offs,
+ M.x86.R_CL);
+ break;
+ case 0xb10c:
+#ifdef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ pci_write_config16(bios_device.dev, offs, M.x86.R_CX);
+#else
+ rtas_pci_config_write(bios_device.puid, 2, bus,
+ devfn, offs, M.x86.R_CX);
+#endif
+ DEBUG_PRINTF_INTR
+ ("%s(): function %x: PCI Config Write @%02x <-- 0x%04x\n",
+ __func__, M.x86.R_AX, offs,
+ M.x86.R_CX);
+ break;
+ case 0xb10d:
+#ifdef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ pci_write_config32(bios_device.dev, offs, M.x86.R_ECX);
+#else
+ rtas_pci_config_write(bios_device.puid, 4, bus,
+ devfn, offs, M.x86.R_ECX);
+#endif
+ DEBUG_PRINTF_INTR
+ ("%s(): function %x: PCI Config Write @%02x <-- 0x%08x\n",
+ __func__, M.x86.R_AX, offs,
+ M.x86.R_ECX);
+ break;
+ }
+ CLEAR_FLAG(F_CF);
+ M.x86.R_AH = 0x0; // return code: success
+ }
+ break;
+ default:
+ printf("%s(): unknown function (%x) for int1a handler.\n",
+ __func__, M.x86.R_AX);
+ DEBUG_PRINTF_INTR("AX=%04x BX=%04x CX=%04x DX=%04x\n",
+ M.x86.R_AX, M.x86.R_BX, M.x86.R_CX,
+ M.x86.R_DX);
+ HALT_SYS();
+ break;
+ }
+}
+
+// main Interrupt Handler routine, should be registered as x86emu interrupt handler
+void
+handleInterrupt(int intNum)
+{
+ u8 int_handled = 0;
+#ifndef DEBUG_PRINT_INT10
+ // this printf makes output by int 10 unreadable...
+ // so we only enable it, if int10 print is disabled
+ DEBUG_PRINTF_INTR("%s(%x)\n", __func__, intNum);
+#endif
+
+ /* check wether this interrupt has a function pointer set in yabel_intFuncArray and run that */
+ if (yabel_intFuncArray[intNum]) {
+ DEBUG_PRINTF_INTR("%s(%x) intHandler overridden, calling it...\n", __func__, intNum);
+ int_handled = (*yabel_intFuncArray[intNum])();
+ } else {
+ switch (intNum) {
+ case 0x10: //BIOS video interrupt
+ case 0x42: // INT 10h relocated by EGA/VGA BIOS
+ case 0x6d: // INT 10h relocated by VGA BIOS
+ // get interrupt vector from IDT (4 bytes per Interrupt starting at address 0
+ if ((my_rdl(intNum * 4) == 0xF000F065) || //F000:F065 is default BIOS interrupt handler address
+ (my_rdl(intNum * 4) == 0xF4F4F4F4)) //invalid
+ {
+#if 0
+ // ignore interrupt...
+ DEBUG_PRINTF_INTR
+ ("%s(%x): invalid interrupt Vector (%08x) found, interrupt ignored...\n",
+ __func__, intNum, my_rdl(intNum * 4));
+ DEBUG_PRINTF_INTR("AX=%04x BX=%04x CX=%04x DX=%04x\n",
+ M.x86.R_AX, M.x86.R_BX, M.x86.R_CX,
+ M.x86.R_DX);
+ //HALT_SYS();
+#endif
+ handleInt10();
+ int_handled = 1;
+ }
+ break;
+ case 0x16:
+ // Keyboard BIOS Interrupt
+ handleInt16();
+ int_handled = 1;
+ break;
+ case 0x1a:
+ // PCI BIOS Interrupt
+ handleInt1a();
+ int_handled = 1;
+ break;
+ case PMM_INT_NUM:
+ /* the selfdefined PMM INT number, this is called by the code in PMM struct, it
+ * is handled by pmm_handleInt()
+ */
+ pmm_handleInt();
+ int_handled = 1;
+ break;
+ default:
+ printf("Interrupt %#x (Vector: %x) not implemented\n", intNum,
+ my_rdl(intNum * 4));
+ DEBUG_PRINTF_INTR("AX=%04x BX=%04x CX=%04x DX=%04x\n",
+ M.x86.R_AX, M.x86.R_BX, M.x86.R_CX,
+ M.x86.R_DX);
+ int_handled = 1;
+ HALT_SYS();
+ break;
+ }
+ }
+ // if we did not handle the interrupt, jump to the interrupt vector...
+ if (!int_handled) {
+ setupInt(intNum);
+ }
+}
+
+// prepare and execute Interrupt 10 (VGA Interrupt)
+void
+runInt10(void)
+{
+ // Initialize stack and data segment
+ M.x86.R_SS = STACK_SEGMENT;
+ M.x86.R_DS = DATA_SEGMENT;
+ M.x86.R_SP = STACK_START_OFFSET;
+
+ // push a HLT instruction and a pointer to it onto the stack
+ // any return will pop the pointer and jump to the HLT, thus
+ // exiting (more or less) cleanly
+ push_word(0xf4f4); //F4=HLT
+ //push_word(M.x86.R_SS);
+ //push_word(M.x86.R_SP + 2);
+
+ // setupInt will push the current CS and IP to the stack to return to it,
+ // but we want to halt, so set CS:IP to the HLT instruction we just pushed
+ // to the stack
+ M.x86.R_CS = M.x86.R_SS;
+ M.x86.R_IP = M.x86.R_SP; // + 4;
+
+ CHECK_DBG(DEBUG_TRACE_X86EMU) {
+ X86EMU_trace_on();
+ }
+ CHECK_DBG(DEBUG_JMP) {
+ M.x86.debug |= DEBUG_TRACEJMP_REGS_F;
+ M.x86.debug |= DEBUG_TRACEJMP_REGS_F;
+ M.x86.debug |= DEBUG_TRACECALL_F;
+ M.x86.debug |= DEBUG_TRACECALL_REGS_F;
+ }
+ setupInt(0x10);
+ DEBUG_PRINTF_INTR("%s(): starting execution of INT10...\n",
+ __func__);
+ X86EMU_exec();
+ DEBUG_PRINTF_INTR("%s(): execution finished\n", __func__);
+}
+
+// prepare and execute Interrupt 13 (Disk Interrupt)
+void
+runInt13(void)
+{
+ // Initialize stack and data segment
+ M.x86.R_SS = STACK_SEGMENT;
+ M.x86.R_DS = DATA_SEGMENT;
+ M.x86.R_SP = STACK_START_OFFSET;
+
+ // push a HLT instruction and a pointer to it onto the stack
+ // any return will pop the pointer and jump to the HLT, thus
+ // exiting (more or less) cleanly
+ push_word(0xf4f4); //F4=HLT
+ //push_word(M.x86.R_SS);
+ //push_word(M.x86.R_SP + 2);
+
+ // setupInt will push the current CS and IP to the stack to return to it,
+ // but we want to halt, so set CS:IP to the HLT instruction we just pushed
+ // to the stack
+ M.x86.R_CS = M.x86.R_SS;
+ M.x86.R_IP = M.x86.R_SP;
+
+ CHECK_DBG(DEBUG_TRACE_X86EMU) {
+ X86EMU_trace_on();
+ }
+ CHECK_DBG(DEBUG_JMP) {
+ M.x86.debug |= DEBUG_TRACEJMP_REGS_F;
+ M.x86.debug |= DEBUG_TRACEJMP_REGS_F;
+ M.x86.debug |= DEBUG_TRACECALL_F;
+ M.x86.debug |= DEBUG_TRACECALL_REGS_F;
+ }
+
+ setupInt(0x13);
+ DEBUG_PRINTF_INTR("%s(): starting execution of INT13...\n",
+ __func__);
+ X86EMU_exec();
+ DEBUG_PRINTF_INTR("%s(): execution finished\n", __func__);
+}
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+#ifndef _BIOSEMU_INTERRUPT_H_
+#define _BIOSEMU_INTERRUPT_H_
+
+void handleInterrupt(int intNum);
+
+void runInt10(void);
+
+void runInt13(void);
+
+#endif
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net>
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#include <types.h>
+#ifdef CONFIG_COREBOOT_V2
+#include "compat/rtas.h"
+#include "compat/time.h"
+#else
+#include <cpu.h>
+#include "rtas.h"
+#include <time.h>
+#endif
+#include "device.h"
+#include "debug.h"
+#include <x86emu/x86emu.h>
+
+#ifdef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+#include <device/pci.h>
+#include <device/pci_ops.h>
+#endif
+
+// those are defined in net-snk/oflib/pci.c
+extern unsigned int read_io(void *, size_t);
+extern int write_io(void *, unsigned int, size_t);
+
+//defined in net-snk/kernel/timer.c
+extern u64 get_time(void);
+
+// these are not used, only needed for linking, must be overridden using X86emu_setupPioFuncs
+// with the functions and struct below
+void
+outb(u8 val, u16 port)
+{
+ printf("WARNING: outb not implemented!\n");
+ HALT_SYS();
+}
+
+void
+outw(u16 val, u16 port)
+{
+ printf("WARNING: outw not implemented!\n");
+ HALT_SYS();
+}
+
+void
+outl(u32 val, u16 port)
+{
+ printf("WARNING: outl not implemented!\n");
+ HALT_SYS();
+}
+
+u8
+inb(u16 port)
+{
+ printf("WARNING: inb not implemented!\n");
+ HALT_SYS();
+ return 0;
+}
+
+u16
+inw(u16 port)
+{
+ printf("WARNING: inw not implemented!\n");
+ HALT_SYS();
+ return 0;
+}
+
+u32
+inl(u16 port)
+{
+ printf("WARNING: inl not implemented!\n");
+ HALT_SYS();
+ return 0;
+}
+
+u32 pci_cfg_read(X86EMU_pioAddr addr, u8 size);
+void pci_cfg_write(X86EMU_pioAddr addr, u32 val, u8 size);
+u8 handle_port_61h(void);
+
+u8
+my_inb(X86EMU_pioAddr addr)
+{
+ u8 rval = 0xFF;
+ unsigned long translated_addr = addr;
+ u8 translated = biosemu_dev_translate_address(&translated_addr);
+ if (translated != 0) {
+ //translation successfull, access Device I/O (BAR or Legacy...)
+ DEBUG_PRINTF_IO("%s(%x): access to Device I/O\n", __func__,
+ addr);
+ //DEBUG_PRINTF_IO("%s(%04x): translated_addr: %llx\n", __func__, addr, translated_addr);
+ rval = read_io((void *)translated_addr, 1);
+ DEBUG_PRINTF_IO("%s(%04x) Device I/O --> %02x\n", __func__,
+ addr, rval);
+ return rval;
+ } else {
+ switch (addr) {
+ case 0x61:
+ //8254 KB Controller / Timer Port
+ rval = handle_port_61h();
+ //DEBUG_PRINTF_IO("%s(%04x) KB / Timer Port B --> %02x\n", __func__, addr, rval);
+ return rval;
+ break;
+ case 0xCFC:
+ case 0xCFD:
+ case 0xCFE:
+ case 0xCFF:
+ // PCI Config Mechanism 1 Ports
+ return (u8) pci_cfg_read(addr, 1);
+ break;
+ case 0x0a:
+ CHECK_DBG(DEBUG_INTR) {
+ X86EMU_trace_on();
+ }
+ M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F;
+ //HALT_SYS();
+ // no break, intentional fall-through to default!!
+ default:
+ DEBUG_PRINTF_IO
+ ("%s(%04x) reading from bios_device.io_buffer\n",
+ __func__, addr);
+ rval = *((u8 *) (bios_device.io_buffer + addr));
+ DEBUG_PRINTF_IO("%s(%04x) I/O Buffer --> %02x\n",
+ __func__, addr, rval);
+ return rval;
+ break;
+ }
+ }
+}
+
+u16
+my_inw(X86EMU_pioAddr addr)
+{
+ unsigned long translated_addr = addr;
+ u8 translated = biosemu_dev_translate_address(&translated_addr);
+ if (translated != 0) {
+ //translation successfull, access Device I/O (BAR or Legacy...)
+ DEBUG_PRINTF_IO("%s(%x): access to Device I/O\n", __func__,
+ addr);
+ //DEBUG_PRINTF_IO("%s(%04x): translated_addr: %llx\n", __func__, addr, translated_addr);
+ u16 rval;
+ if ((translated_addr & (u64) 0x1) == 0) {
+ // 16 bit aligned access...
+ u16 tempval = read_io((void *)translated_addr, 2);
+ //little endian conversion
+ rval = in16le((void *) &tempval);
+ } else {
+ // unaligned access, read single bytes, little-endian
+ rval = (read_io((void *)translated_addr, 1) << 8)
+ | (read_io((void *)(translated_addr + 1), 1));
+ }
+ DEBUG_PRINTF_IO("%s(%04x) Device I/O --> %04x\n", __func__,
+ addr, rval);
+ return rval;
+ } else {
+ switch (addr) {
+ case 0xCFC:
+ case 0xCFE:
+ //PCI Config Mechanism 1
+ return (u16) pci_cfg_read(addr, 2);
+ break;
+ default:
+ DEBUG_PRINTF_IO
+ ("%s(%04x) reading from bios_device.io_buffer\n",
+ __func__, addr);
+ u16 rval =
+ in16le((void *) bios_device.io_buffer + addr);
+ DEBUG_PRINTF_IO("%s(%04x) I/O Buffer --> %04x\n",
+ __func__, addr, rval);
+ return rval;
+ break;
+ }
+ }
+}
+
+u32
+my_inl(X86EMU_pioAddr addr)
+{
+ unsigned long translated_addr = addr;
+ u8 translated = biosemu_dev_translate_address(&translated_addr);
+ if (translated != 0) {
+ //translation successfull, access Device I/O (BAR or Legacy...)
+ DEBUG_PRINTF_IO("%s(%x): access to Device I/O\n", __func__,
+ addr);
+ //DEBUG_PRINTF_IO("%s(%04x): translated_addr: %llx\n", __func__, addr, translated_addr);
+ u32 rval;
+ if ((translated_addr & (u64) 0x3) == 0) {
+ // 32 bit aligned access...
+ u32 tempval = read_io((void *) translated_addr, 4);
+ //little endian conversion
+ rval = in32le((void *) &tempval);
+ } else {
+ // unaligned access, read single bytes, little-endian
+ rval = (read_io((void *)(translated_addr), 1) << 24)
+ | (read_io((void *)(translated_addr + 1), 1) << 16)
+ | (read_io((void *)(translated_addr + 2), 1) << 8)
+ | (read_io((void *)(translated_addr + 3), 1));
+ }
+ DEBUG_PRINTF_IO("%s(%04x) Device I/O --> %08x\n", __func__,
+ addr, rval);
+ return rval;
+ } else {
+ switch (addr) {
+ case 0xCFC:
+ //PCI Config Mechanism 1
+ return pci_cfg_read(addr, 4);
+ break;
+ default:
+ DEBUG_PRINTF_IO
+ ("%s(%04x) reading from bios_device.io_buffer\n",
+ __func__, addr);
+ u32 rval =
+ in32le((void *) bios_device.io_buffer + addr);
+ DEBUG_PRINTF_IO("%s(%04x) I/O Buffer --> %08x\n",
+ __func__, addr, rval);
+ return rval;
+ break;
+ }
+ }
+}
+
+void
+my_outb(X86EMU_pioAddr addr, u8 val)
+{
+ unsigned long translated_addr = addr;
+ u8 translated = biosemu_dev_translate_address(&translated_addr);
+ if (translated != 0) {
+ //translation successfull, access Device I/O (BAR or Legacy...)
+ DEBUG_PRINTF_IO("%s(%x, %x): access to Device I/O\n",
+ __func__, addr, val);
+ //DEBUG_PRINTF_IO("%s(%04x): translated_addr: %llx\n", __func__, addr, translated_addr);
+ write_io((void *) translated_addr, val, 1);
+ DEBUG_PRINTF_IO("%s(%04x) Device I/O <-- %02x\n", __func__,
+ addr, val);
+ } else {
+ switch (addr) {
+ case 0xCFC:
+ case 0xCFD:
+ case 0xCFE:
+ case 0xCFF:
+ // PCI Config Mechanism 1 Ports
+ pci_cfg_write(addr, val, 1);
+ break;
+ default:
+ DEBUG_PRINTF_IO
+ ("%s(%04x,%02x) writing to bios_device.io_buffer\n",
+ __func__, addr, val);
+ *((u8 *) (bios_device.io_buffer + addr)) = val;
+ break;
+ }
+ }
+}
+
+void
+my_outw(X86EMU_pioAddr addr, u16 val)
+{
+ unsigned long translated_addr = addr;
+ u8 translated = biosemu_dev_translate_address(&translated_addr);
+ if (translated != 0) {
+ //translation successfull, access Device I/O (BAR or Legacy...)
+ DEBUG_PRINTF_IO("%s(%x, %x): access to Device I/O\n",
+ __func__, addr, val);
+ //DEBUG_PRINTF_IO("%s(%04x): translated_addr: %llx\n", __func__, addr, translated_addr);
+ if ((translated_addr & (u64) 0x1) == 0) {
+ // little-endian conversion
+ u16 tempval = in16le((void *) &val);
+ // 16 bit aligned access...
+ write_io((void *) translated_addr, tempval, 2);
+ } else {
+ // unaligned access, write single bytes, little-endian
+ write_io(((void *) (translated_addr + 1)),
+ (u8) ((val & 0xFF00) >> 8), 1);
+ write_io(((void *) translated_addr),
+ (u8) (val & 0x00FF), 1);
+ }
+ DEBUG_PRINTF_IO("%s(%04x) Device I/O <-- %04x\n", __func__,
+ addr, val);
+ } else {
+ switch (addr) {
+ case 0xCFC:
+ case 0xCFE:
+ // PCI Config Mechanism 1 Ports
+ pci_cfg_write(addr, val, 2);
+ break;
+ default:
+ DEBUG_PRINTF_IO
+ ("%s(%04x,%04x) writing to bios_device.io_buffer\n",
+ __func__, addr, val);
+ out16le((void *) bios_device.io_buffer + addr, val);
+ break;
+ }
+ }
+}
+
+void
+my_outl(X86EMU_pioAddr addr, u32 val)
+{
+ unsigned long translated_addr = addr;
+ u8 translated = biosemu_dev_translate_address(&translated_addr);
+ if (translated != 0) {
+ //translation successfull, access Device I/O (BAR or Legacy...)
+ DEBUG_PRINTF_IO("%s(%x, %x): access to Device I/O\n",
+ __func__, addr, val);
+ //DEBUG_PRINTF_IO("%s(%04x): translated_addr: %llx\n", __func__, addr, translated_addr);
+ if ((translated_addr & (u64) 0x3) == 0) {
+ // little-endian conversion
+ u32 tempval = in32le((void *) &val);
+ // 32 bit aligned access...
+ write_io((void *) translated_addr, tempval, 4);
+ } else {
+ // unaligned access, write single bytes, little-endian
+ write_io(((void *) translated_addr + 3),
+ (u8) ((val & 0xFF000000) >> 24), 1);
+ write_io(((void *) translated_addr + 2),
+ (u8) ((val & 0x00FF0000) >> 16), 1);
+ write_io(((void *) translated_addr + 1),
+ (u8) ((val & 0x0000FF00) >> 8), 1);
+ write_io(((void *) translated_addr),
+ (u8) (val & 0x000000FF), 1);
+ }
+ DEBUG_PRINTF_IO("%s(%04x) Device I/O <-- %08x\n", __func__,
+ addr, val);
+ } else {
+ switch (addr) {
+ case 0xCFC:
+ // PCI Config Mechanism 1 Ports
+ pci_cfg_write(addr, val, 4);
+ break;
+ default:
+ DEBUG_PRINTF_IO
+ ("%s(%04x,%08x) writing to bios_device.io_buffer\n",
+ __func__, addr, val);
+ out32le((void *) bios_device.io_buffer + addr, val);
+ break;
+ }
+ }
+}
+
+u32
+pci_cfg_read(X86EMU_pioAddr addr, u8 size)
+{
+ u32 rval = 0xFFFFFFFF;
+ struct device * dev;
+ if ((addr >= 0xCFC) && ((addr + size) <= 0xD00)) {
+ // PCI Configuration Mechanism 1 step 1
+ // write to 0xCF8, sets bus, device, function and Config Space offset
+ // later read from 0xCFC-0xCFF returns the value...
+ u8 bus, devfn, offs;
+ u32 port_cf8_val = my_inl(0xCF8);
+ if ((port_cf8_val & 0x80000000) != 0) {
+ //highest bit enables config space mapping
+ bus = (port_cf8_val & 0x00FF0000) >> 16;
+ devfn = (port_cf8_val & 0x0000FF00) >> 8;
+ offs = (port_cf8_val & 0x000000FF);
+ offs += (addr - 0xCFC); // if addr is not 0xcfc, the offset is moved accordingly
+ DEBUG_PRINTF_INTR("%s(): PCI Config Read from device: bus: %02x, devfn: %02x, offset: %02x\n",
+ __func__, bus, devfn, offs);
+#if defined(CONFIG_YABEL_PCI_ACCESS_OTHER_DEVICES) && CONFIG_YABEL_PCI_ACCESS_OTHER_DEVICES==1
+ dev = dev_find_slot(bus, devfn);
+ DEBUG_PRINTF_INTR("%s(): dev_find_slot() returned: %s\n",
+ __func__, dev_path(dev));
+ if (dev == 0) {
+ // fail accesses to non-existent devices...
+#else
+ dev = bios_device.dev;
+ if ((bus != bios_device.bus)
+ || (devfn != bios_device.devfn)) {
+ // fail accesses to any device but ours...
+#endif
+ printf
+ ("%s(): Config read access invalid device! bus: %02x (%02x), devfn: %02x (%02x), offs: %02x\n",
+ __func__, bus, bios_device.bus, devfn,
+ bios_device.devfn, offs);
+ SET_FLAG(F_CF);
+ HALT_SYS();
+ return 0;
+ } else {
+#ifdef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ switch (size) {
+ case 1:
+ rval = pci_read_config8(dev, offs);
+ break;
+ case 2:
+ rval = pci_read_config16(dev, offs);
+ break;
+ case 4:
+ rval = pci_read_config32(dev, offs);
+ break;
+ }
+#else
+ rval =
+ (u32) rtas_pci_config_read(bios_device.
+ puid, size,
+ bus, devfn,
+ offs);
+#endif
+ DEBUG_PRINTF_IO
+ ("%s(%04x) PCI Config Read @%02x, size: %d --> 0x%08x\n",
+ __func__, addr, offs, size, rval);
+ }
+ }
+ }
+ return rval;
+}
+
+void
+pci_cfg_write(X86EMU_pioAddr addr, u32 val, u8 size)
+{
+ if ((addr >= 0xCFC) && ((addr + size) <= 0xD00)) {
+ // PCI Configuration Mechanism 1 step 1
+ // write to 0xCF8, sets bus, device, function and Config Space offset
+ // later write to 0xCFC-0xCFF sets the value...
+ u8 bus, devfn, offs;
+ u32 port_cf8_val = my_inl(0xCF8);
+ if ((port_cf8_val & 0x80000000) != 0) {
+ //highest bit enables config space mapping
+ bus = (port_cf8_val & 0x00FF0000) >> 16;
+ devfn = (port_cf8_val & 0x0000FF00) >> 8;
+ offs = (port_cf8_val & 0x000000FF);
+ offs += (addr - 0xCFC); // if addr is not 0xcfc, the offset is moved accordingly
+ if ((bus != bios_device.bus)
+ || (devfn != bios_device.devfn)) {
+ // fail accesses to any device but ours...
+ printf
+ ("Config write access invalid! PCI device %x:%x.%x, offs: %x\n",
+ bus, devfn >> 3, devfn & 7, offs);
+ HALT_SYS();
+ } else {
+#ifdef CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ switch (size) {
+ case 1:
+ pci_write_config8(bios_device.dev, offs, val);
+ break;
+ case 2:
+ pci_write_config16(bios_device.dev, offs, val);
+ break;
+ case 4:
+ pci_write_config32(bios_device.dev, offs, val);
+ break;
+ }
+#else
+ rtas_pci_config_write(bios_device.puid,
+ size, bus, devfn, offs,
+ val);
+#endif
+ DEBUG_PRINTF_IO
+ ("%s(%04x) PCI Config Write @%02x, size: %d <-- 0x%08x\n",
+ __func__, addr, offs, size, val);
+ }
+ }
+ }
+}
+
+u8
+handle_port_61h(void)
+{
+ static u64 last_time = 0;
+ u64 curr_time = get_time();
+ u64 time_diff; // time since last call
+ u32 period_ticks; // length of a period in ticks
+ u32 nr_periods; //number of periods passed since last call
+ // bit 4 should toggle with every (DRAM) refresh cycle... (66kHz??)
+ time_diff = curr_time - last_time;
+ // at 66kHz a period is ~ 15 ns long, converted to ticks: (tb_freq is ticks/second)
+ // TODO: as long as the frequency does not change, we should not calculate this every time
+ period_ticks = (15 * tb_freq) / 1000000;
+ nr_periods = time_diff / period_ticks;
+ // if the number if ticks passed since last call is odd, we toggle bit 4
+ if ((nr_periods % 2) != 0) {
+ *((u8 *) (bios_device.io_buffer + 0x61)) ^= 0x10;
+ }
+ //finally read the value from the io_buffer
+ return *((u8 *) (bios_device.io_buffer + 0x61));
+}
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#ifndef _BIOSEMU_IO_H_
+#define _BIOSEMU_IO_H_
+#include <x86emu/x86emu.h>
+#include <types.h>
+
+u8 my_inb(X86EMU_pioAddr addr);
+
+u16 my_inw(X86EMU_pioAddr addr);
+
+u32 my_inl(X86EMU_pioAddr addr);
+
+void my_outb(X86EMU_pioAddr addr, u8 val);
+
+void my_outw(X86EMU_pioAddr addr, u16 val);
+
+void my_outl(X86EMU_pioAddr addr, u32 val);
+
+#endif
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net>
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#include <types.h>
+#ifndef CONFIG_COREBOOT_V2
+#include <cpu.h>
+#endif
+#include "debug.h"
+#include "device.h"
+#include "x86emu/x86emu.h"
+#include "biosemu.h"
+#ifdef CONFIG_COREBOOT_V2
+#include "compat/time.h"
+#else
+#include <time.h>
+#endif
+
+// define a check for access to certain (virtual) memory regions (interrupt handlers, BIOS Data Area, ...)
+#ifdef CONFIG_DEBUG
+static u8 in_check = 0; // to avoid recursion...
+u16 ebda_segment;
+u32 ebda_size;
+
+//TODO: these macros have grown so large, that they should be changed to an inline function,
+//just for the sake of readability...
+
+//declare prototypes of the functions to follow, for use in DEBUG_CHECK_VMEM_ACCESS
+u8 my_rdb(u32);
+u16 my_rdw(u32);
+u32 my_rdl(u32);
+
+#define DEBUG_CHECK_VMEM_READ(_addr, _rval) \
+ if ((debug_flags & DEBUG_CHECK_VMEM_ACCESS) && (in_check == 0)) { \
+ in_check = 1; \
+ /* determine ebda_segment and size \
+ * since we are using my_rdx calls, make sure, this is after setting in_check! */ \
+ /* offset 03 in BDA is EBDA segment */ \
+ ebda_segment = my_rdw(0x40e); \
+ /* first value in ebda is size in KB */ \
+ ebda_size = my_rdb(ebda_segment << 4) * 1024; \
+ /* check Interrupt Vector Access (0000:0000h - 0000:0400h) */ \
+ if (_addr < 0x400) { \
+ DEBUG_PRINTF_CS_IP("%s: read from Interrupt Vector %x --> %x\n", \
+ __func__, _addr / 4, _rval); \
+ } \
+ /* access to BIOS Data Area (0000:0400h - 0000:0500h)*/ \
+ else if ((_addr >= 0x400) && (addr < 0x500)) { \
+ DEBUG_PRINTF_CS_IP("%s: read from BIOS Data Area: addr: %x --> %x\n", \
+ __func__, _addr, _rval); \
+ /* dump registers */ \
+ /* x86emu_dump_xregs(); */ \
+ } \
+ /* access to first 64k of memory... */ \
+ else if (_addr < 0x10000) { \
+ DEBUG_PRINTF_CS_IP("%s: read from segment 0000h: addr: %x --> %x\n", \
+ __func__, _addr, _rval); \
+ /* dump registers */ \
+ /* x86emu_dump_xregs(); */ \
+ } \
+ /* read from PMM_CONV_SEGMENT */ \
+ else if ((_addr <= ((PMM_CONV_SEGMENT << 4) | 0xffff)) && (_addr >= (PMM_CONV_SEGMENT << 4))) { \
+ DEBUG_PRINTF_CS_IP("%s: read from PMM Segment %04xh: addr: %x --> %x\n", \
+ __func__, PMM_CONV_SEGMENT, _addr, _rval); \
+ /* HALT_SYS(); */ \
+ /* dump registers */ \
+ /* x86emu_dump_xregs(); */ \
+ } \
+ /* read from PNP_DATA_SEGMENT */ \
+ else if ((_addr <= ((PNP_DATA_SEGMENT << 4) | 0xffff)) && (_addr >= (PNP_DATA_SEGMENT << 4))) { \
+ DEBUG_PRINTF_CS_IP("%s: read from PnP Data Segment %04xh: addr: %x --> %x\n", \
+ __func__, PNP_DATA_SEGMENT, _addr, _rval); \
+ /* HALT_SYS(); */ \
+ /* dump registers */ \
+ /* x86emu_dump_xregs(); */ \
+ } \
+ /* read from EBDA Segment */ \
+ else if ((_addr <= ((ebda_segment << 4) | (ebda_size - 1))) && (_addr >= (ebda_segment << 4))) { \
+ DEBUG_PRINTF_CS_IP("%s: read from Extended BIOS Data Area %04xh, size: %04x: addr: %x --> %x\n", \
+ __func__, ebda_segment, ebda_size, _addr, _rval); \
+ } \
+ /* read from BIOS_DATA_SEGMENT */ \
+ else if ((_addr <= ((BIOS_DATA_SEGMENT << 4) | 0xffff)) && (_addr >= (BIOS_DATA_SEGMENT << 4))) { \
+ DEBUG_PRINTF_CS_IP("%s: read from BIOS Data Segment %04xh: addr: %x --> %x\n", \
+ __func__, BIOS_DATA_SEGMENT, _addr, _rval); \
+ /* for PMM debugging */ \
+ /*if (_addr == BIOS_DATA_SEGMENT << 4) { \
+ X86EMU_trace_on(); \
+ M.x86.debug &= ~DEBUG_DECODE_NOPRINT_F; \
+ }*/ \
+ /* dump registers */ \
+ /* x86emu_dump_xregs(); */ \
+ } \
+ in_check = 0; \
+ }
+#define DEBUG_CHECK_VMEM_WRITE(_addr, _val) \
+ if ((debug_flags & DEBUG_CHECK_VMEM_ACCESS) && (in_check == 0)) { \
+ in_check = 1; \
+ /* determine ebda_segment and size \
+ * since we are using my_rdx calls, make sure, this is after setting in_check! */ \
+ /* offset 03 in BDA is EBDA segment */ \
+ ebda_segment = my_rdw(0x40e); \
+ /* first value in ebda is size in KB */ \
+ ebda_size = my_rdb(ebda_segment << 4) * 1024; \
+ /* check Interrupt Vector Access (0000:0000h - 0000:0400h) */ \
+ if (_addr < 0x400) { \
+ DEBUG_PRINTF_CS_IP("%s: write to Interrupt Vector %x <-- %x\n", \
+ __func__, _addr / 4, _val); \
+ } \
+ /* access to BIOS Data Area (0000:0400h - 0000:0500h)*/ \
+ else if ((_addr >= 0x400) && (addr < 0x500)) { \
+ DEBUG_PRINTF_CS_IP("%s: write to BIOS Data Area: addr: %x <-- %x\n", \
+ __func__, _addr, _val); \
+ /* dump registers */ \
+ /* x86emu_dump_xregs(); */ \
+ } \
+ /* access to first 64k of memory...*/ \
+ else if (_addr < 0x10000) { \
+ DEBUG_PRINTF_CS_IP("%s: write to segment 0000h: addr: %x <-- %x\n", \
+ __func__, _addr, _val); \
+ /* dump registers */ \
+ /* x86emu_dump_xregs(); */ \
+ } \
+ /* write to PMM_CONV_SEGMENT... */ \
+ else if ((_addr <= ((PMM_CONV_SEGMENT << 4) | 0xffff)) && (_addr >= (PMM_CONV_SEGMENT << 4))) { \
+ DEBUG_PRINTF_CS_IP("%s: write to PMM Segment %04xh: addr: %x <-- %x\n", \
+ __func__, PMM_CONV_SEGMENT, _addr, _val); \
+ /* dump registers */ \
+ /* x86emu_dump_xregs(); */ \
+ } \
+ /* write to PNP_DATA_SEGMENT... */ \
+ else if ((_addr <= ((PNP_DATA_SEGMENT << 4) | 0xffff)) && (_addr >= (PNP_DATA_SEGMENT << 4))) { \
+ DEBUG_PRINTF_CS_IP("%s: write to PnP Data Segment %04xh: addr: %x <-- %x\n", \
+ __func__, PNP_DATA_SEGMENT, _addr, _val); \
+ /* dump registers */ \
+ /* x86emu_dump_xregs(); */ \
+ } \
+ /* write to EBDA Segment... */ \
+ else if ((_addr <= ((ebda_segment << 4) | (ebda_size - 1))) && (_addr >= (ebda_segment << 4))) { \
+ DEBUG_PRINTF_CS_IP("%s: write to Extended BIOS Data Area %04xh, size: %04x: addr: %x <-- %x\n", \
+ __func__, ebda_segment, ebda_size, _addr, _val); \
+ } \
+ /* write to BIOS_DATA_SEGMENT... */ \
+ else if ((_addr <= ((BIOS_DATA_SEGMENT << 4) | 0xffff)) && (_addr >= (BIOS_DATA_SEGMENT << 4))) { \
+ DEBUG_PRINTF_CS_IP("%s: write to BIOS Data Segment %04xh: addr: %x <-- %x\n", \
+ __func__, BIOS_DATA_SEGMENT, _addr, _val); \
+ /* dump registers */ \
+ /* x86emu_dump_xregs(); */ \
+ } \
+ /* write to current CS segment... */ \
+ else if ((_addr < ((M.x86.R_CS << 4) | 0xffff)) && (_addr > (M.x86.R_CS << 4))) { \
+ DEBUG_PRINTF_CS_IP("%s: write to CS segment %04xh: addr: %x <-- %x\n", \
+ __func__, M.x86.R_CS, _addr, _val); \
+ /* dump registers */ \
+ /* x86emu_dump_xregs(); */ \
+ } \
+ in_check = 0; \
+ }
+#else
+#define DEBUG_CHECK_VMEM_READ(_addr, _rval)
+#define DEBUG_CHECK_VMEM_WRITE(_addr, _val)
+#endif
+
+//defined in net-snk/kernel/timer.c
+extern u64 get_time(void);
+
+void update_time(u32);
+
+// read byte from memory
+u8
+my_rdb(u32 addr)
+{
+ unsigned long translated_addr = addr;
+ u8 translated = biosemu_dev_translate_address(&translated_addr);
+ u8 rval;
+ if (translated != 0) {
+ //translation successfull, access VGA Memory (BAR or Legacy...)
+ DEBUG_PRINTF_MEM("%s(%08x): access to VGA Memory\n",
+ __func__, addr);
+ //DEBUG_PRINTF_MEM("%s(%08x): translated_addr: %llx\n", __func__, addr, translated_addr);
+ set_ci();
+ rval = *((u8 *) translated_addr);
+ clr_ci();
+ DEBUG_PRINTF_MEM("%s(%08x) VGA --> %02x\n", __func__, addr,
+ rval);
+ return rval;
+ } else if (addr > M.mem_size) {
+ DEBUG_PRINTF("%s(%08x): Memory Access out of range!\n",
+ __func__, addr);
+ //disassemble_forward(M.x86.saved_cs, M.x86.saved_ip, 1);
+ HALT_SYS();
+ } else {
+ /* read from virtual memory */
+ rval = *((u8 *) (M.mem_base + addr));
+ DEBUG_CHECK_VMEM_READ(addr, rval);
+ return rval;
+ }
+ return -1;
+}
+
+//read word from memory
+u16
+my_rdw(u32 addr)
+{
+ unsigned long translated_addr = addr;
+ u8 translated = biosemu_dev_translate_address(&translated_addr);
+ u16 rval;
+ if (translated != 0) {
+ //translation successfull, access VGA Memory (BAR or Legacy...)
+ DEBUG_PRINTF_MEM("%s(%08x): access to VGA Memory\n",
+ __func__, addr);
+ //DEBUG_PRINTF_MEM("%s(%08x): translated_addr: %llx\n", __func__, addr, translated_addr);
+ // check for legacy memory, because of the remapping to BARs, the reads must
+ // be byte reads...
+ if ((addr >= 0xa0000) && (addr < 0xc0000)) {
+ //read bytes a using my_rdb, because of the remapping to BARs
+ //words may not be contiguous in memory, so we need to translate
+ //every address...
+ rval = ((u8) my_rdb(addr)) |
+ (((u8) my_rdb(addr + 1)) << 8);
+ } else {
+ if ((translated_addr & (u64) 0x1) == 0) {
+ // 16 bit aligned access...
+ set_ci();
+ rval = in16le((void *) translated_addr);
+ clr_ci();
+ } else {
+ // unaligned access, read single bytes
+ set_ci();
+ rval = (*((u8 *) translated_addr)) |
+ (*((u8 *) translated_addr + 1) << 8);
+ clr_ci();
+ }
+ }
+ DEBUG_PRINTF_MEM("%s(%08x) VGA --> %04x\n", __func__, addr,
+ rval);
+ return rval;
+ } else if (addr > M.mem_size) {
+ DEBUG_PRINTF("%s(%08x): Memory Access out of range!\n",
+ __func__, addr);
+ //disassemble_forward(M.x86.saved_cs, M.x86.saved_ip, 1);
+ HALT_SYS();
+ } else {
+ /* read from virtual memory */
+ rval = in16le((void *) (M.mem_base + addr));
+ DEBUG_CHECK_VMEM_READ(addr, rval);
+ return rval;
+ }
+ return -1;
+}
+
+//read long from memory
+u32
+my_rdl(u32 addr)
+{
+ unsigned long translated_addr = addr;
+ u8 translated = biosemu_dev_translate_address(&translated_addr);
+ u32 rval;
+ if (translated != 0) {
+ //translation successfull, access VGA Memory (BAR or Legacy...)
+ DEBUG_PRINTF_MEM("%s(%x): access to VGA Memory\n",
+ __func__, addr);
+ //DEBUG_PRINTF_MEM("%s(%08x): translated_addr: %llx\n", __func__, addr, translated_addr);
+ // check for legacy memory, because of the remapping to BARs, the reads must
+ // be byte reads...
+ if ((addr >= 0xa0000) && (addr < 0xc0000)) {
+ //read bytes a using my_rdb, because of the remapping to BARs
+ //dwords may not be contiguous in memory, so we need to translate
+ //every address...
+ rval = ((u8) my_rdb(addr)) |
+ (((u8) my_rdb(addr + 1)) << 8) |
+ (((u8) my_rdb(addr + 2)) << 16) |
+ (((u8) my_rdb(addr + 3)) << 24);
+ } else {
+ if ((translated_addr & (u64) 0x3) == 0) {
+ // 32 bit aligned access...
+ set_ci();
+ rval = in32le((void *) translated_addr);
+ clr_ci();
+ } else {
+ // unaligned access, read single bytes
+ set_ci();
+ rval = (*((u8 *) translated_addr)) |
+ (*((u8 *) translated_addr + 1) << 8) |
+ (*((u8 *) translated_addr + 2) << 16) |
+ (*((u8 *) translated_addr + 3) << 24);
+ clr_ci();
+ }
+ }
+ DEBUG_PRINTF_MEM("%s(%08x) VGA --> %08x\n", __func__, addr,
+ rval);
+ //HALT_SYS();
+ return rval;
+ } else if (addr > M.mem_size) {
+ DEBUG_PRINTF("%s(%08x): Memory Access out of range!\n",
+ __func__, addr);
+ //disassemble_forward(M.x86.saved_cs, M.x86.saved_ip, 1);
+ HALT_SYS();
+ } else {
+ /* read from virtual memory */
+ rval = in32le((void *) (M.mem_base + addr));
+ switch (addr) {
+ case 0x46c:
+ //BDA Time Data, update it, before reading
+ update_time(rval);
+ rval = in32le((void *) (M.mem_base + addr));
+ break;
+ }
+ DEBUG_CHECK_VMEM_READ(addr, rval);
+ return rval;
+ }
+ return -1;
+}
+
+//write byte to memory
+void
+my_wrb(u32 addr, u8 val)
+{
+ unsigned long translated_addr = addr;
+ u8 translated = biosemu_dev_translate_address(&translated_addr);
+ if (translated != 0) {
+ //translation successfull, access VGA Memory (BAR or Legacy...)
+ DEBUG_PRINTF_MEM("%s(%x, %x): access to VGA Memory\n",
+ __func__, addr, val);
+ //DEBUG_PRINTF_MEM("%s(%08x): translated_addr: %llx\n", __func__, addr, translated_addr);
+ set_ci();
+ *((u8 *) translated_addr) = val;
+ clr_ci();
+ } else if (addr > M.mem_size) {
+ DEBUG_PRINTF("%s(%08x): Memory Access out of range!\n",
+ __func__, addr);
+ //disassemble_forward(M.x86.saved_cs, M.x86.saved_ip, 1);
+ HALT_SYS();
+ } else {
+ /* write to virtual memory */
+ DEBUG_CHECK_VMEM_WRITE(addr, val);
+ *((u8 *) (M.mem_base + addr)) = val;
+ }
+}
+
+void
+my_wrw(u32 addr, u16 val)
+{
+ unsigned long translated_addr = addr;
+ u8 translated = biosemu_dev_translate_address(&translated_addr);
+ if (translated != 0) {
+ //translation successfull, access VGA Memory (BAR or Legacy...)
+ DEBUG_PRINTF_MEM("%s(%x, %x): access to VGA Memory\n",
+ __func__, addr, val);
+ //DEBUG_PRINTF_MEM("%s(%08x): translated_addr: %llx\n", __func__, addr, translated_addr);
+ // check for legacy memory, because of the remapping to BARs, the reads must
+ // be byte reads...
+ if ((addr >= 0xa0000) && (addr < 0xc0000)) {
+ //read bytes a using my_rdb, because of the remapping to BARs
+ //words may not be contiguous in memory, so we need to translate
+ //every address...
+ my_wrb(addr, (u8) (val & 0x00FF));
+ my_wrb(addr + 1, (u8) ((val & 0xFF00) >> 8));
+ } else {
+ if ((translated_addr & (u64) 0x1) == 0) {
+ // 16 bit aligned access...
+ set_ci();
+ out16le((void *) translated_addr, val);
+ clr_ci();
+ } else {
+ // unaligned access, write single bytes
+ set_ci();
+ *((u8 *) translated_addr) =
+ (u8) (val & 0x00FF);
+ *((u8 *) translated_addr + 1) =
+ (u8) ((val & 0xFF00) >> 8);
+ clr_ci();
+ }
+ }
+ } else if (addr > M.mem_size) {
+ DEBUG_PRINTF("%s(%08x): Memory Access out of range!\n",
+ __func__, addr);
+ //disassemble_forward(M.x86.saved_cs, M.x86.saved_ip, 1);
+ HALT_SYS();
+ } else {
+ /* write to virtual memory */
+ DEBUG_CHECK_VMEM_WRITE(addr, val);
+ out16le((void *) (M.mem_base + addr), val);
+ }
+}
+void
+my_wrl(u32 addr, u32 val)
+{
+ unsigned long translated_addr = addr;
+ u8 translated = biosemu_dev_translate_address(&translated_addr);
+ if (translated != 0) {
+ //translation successfull, access VGA Memory (BAR or Legacy...)
+ DEBUG_PRINTF_MEM("%s(%x, %x): access to VGA Memory\n",
+ __func__, addr, val);
+ //DEBUG_PRINTF_MEM("%s(%08x): translated_addr: %llx\n", __func__, addr, translated_addr);
+ // check for legacy memory, because of the remapping to BARs, the reads must
+ // be byte reads...
+ if ((addr >= 0xa0000) && (addr < 0xc0000)) {
+ //read bytes a using my_rdb, because of the remapping to BARs
+ //words may not be contiguous in memory, so we need to translate
+ //every address...
+ my_wrb(addr, (u8) (val & 0x000000FF));
+ my_wrb(addr + 1, (u8) ((val & 0x0000FF00) >> 8));
+ my_wrb(addr + 2, (u8) ((val & 0x00FF0000) >> 16));
+ my_wrb(addr + 3, (u8) ((val & 0xFF000000) >> 24));
+ } else {
+ if ((translated_addr & (u64) 0x3) == 0) {
+ // 32 bit aligned access...
+ set_ci();
+ out32le((void *) translated_addr, val);
+ clr_ci();
+ } else {
+ // unaligned access, write single bytes
+ set_ci();
+ *((u8 *) translated_addr) =
+ (u8) (val & 0x000000FF);
+ *((u8 *) translated_addr + 1) =
+ (u8) ((val & 0x0000FF00) >> 8);
+ *((u8 *) translated_addr + 2) =
+ (u8) ((val & 0x00FF0000) >> 16);
+ *((u8 *) translated_addr + 3) =
+ (u8) ((val & 0xFF000000) >> 24);
+ clr_ci();
+ }
+ }
+ } else if (addr > M.mem_size) {
+ DEBUG_PRINTF("%s(%08x): Memory Access out of range!\n",
+ __func__, addr);
+ //disassemble_forward(M.x86.saved_cs, M.x86.saved_ip, 1);
+ HALT_SYS();
+ } else {
+ /* write to virtual memory */
+ DEBUG_CHECK_VMEM_WRITE(addr, val);
+ out32le((void *) (M.mem_base + addr), val);
+ }
+}
+
+//update time in BIOS Data Area
+//DWord at offset 0x6c is the timer ticks since midnight, timer is running at 18Hz
+//byte at 0x70 is timer overflow (set if midnight passed since last call to interrupt 1a function 00
+//cur_val is the current value, of offset 6c...
+void
+update_time(u32 cur_val)
+{
+ //for convenience, we let the start of timebase be at midnight, we currently dont support
+ //real daytime anyway...
+ u64 ticks_per_day = tb_freq * 60 * 24;
+ // at 18Hz a period is ~55ms, converted to ticks (tb_freq is ticks/second)
+ u32 period_ticks = (55 * tb_freq) / 1000;
+ u64 curr_time = get_time();
+ u64 ticks_since_midnight = curr_time % ticks_per_day;
+ u32 periods_since_midnight = ticks_since_midnight / period_ticks;
+ // if periods since midnight is smaller than last value, set overflow
+ // at BDA Offset 0x70
+ if (periods_since_midnight < cur_val) {
+ my_wrb(0x470, 1);
+ }
+ // store periods since midnight at BDA offset 0x6c
+ my_wrl(0x46c, periods_since_midnight);
+}
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#ifndef _BIOSEMU_MEM_H_
+#define _BIOSEMU_MEM_H_
+#include <x86emu/x86emu.h>
+#include <types.h>
+
+// read byte from memory
+u8 my_rdb(u32 addr);
+
+//read word from memory
+u16 my_rdw(u32 addr);
+
+//read long from memory
+u32 my_rdl(u32 addr);
+
+//write byte to memory
+void my_wrb(u32 addr, u8 val);
+
+//write word to memory
+void my_wrw(u32 addr, u16 val);
+
+//write long to memory
+void my_wrl(u32 addr, u32 val);
+
+#endif
--- /dev/null
+/****************************************************************************
+ * YABEL BIOS Emulator
+ *
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Copyright (c) 2008 Pattrick Hueper <phueper@hueper.net>
+ ****************************************************************************/
+
+#include <x86emu/x86emu.h>
+#ifdef CONFIG_COREBOOT_V2
+#include "../x86emu/prim_ops.h"
+#else
+#include <x86emu/prim_ops.h>
+#endif
+#include <string.h>
+
+#include "biosemu.h"
+#include "pmm.h"
+#include "debug.h"
+#include "device.h"
+
+/* this struct is used to remember which PMM spaces
+ * have been assigned. MAX_PMM_AREAS defines how many
+ * PMM areas we can assign.
+ * All areas are assigned in PMM_CONV_SEGMENT
+ */
+typedef struct {
+ u32 handle; /* handle that is returned to PMM caller */
+ u32 offset; /* in PMM_CONV_SEGMENT */
+ u32 length; /* length of this area */
+} pmm_allocation_t;
+
+#define MAX_PMM_AREAS 10
+
+/* array to store the above structs */
+static pmm_allocation_t pmm_allocation_array[MAX_PMM_AREAS];
+
+/* index into pmm_allocation_array */
+static u32 curr_pmm_allocation_index = 0;
+
+/* This function is used to setup the PMM struct in virtual memory
+ * at a certain offset, the length of the PMM struct is returned */
+u8 pmm_setup(u16 segment, u16 offset)
+{
+ /* setup the PMM structure */
+ pmm_information_t *pis =
+ (pmm_information_t *) (M.mem_base + (((u32) segment) << 4) +
+ offset);
+ memset(pis, 0, sizeof(pmm_information_t));
+ /* set signature to $PMM */
+ pis->signature[0] = '$';
+ pis->signature[1] = 'P';
+ pis->signature[2] = 'M';
+ pis->signature[3] = 'M';
+ /* revision as specified */
+ pis->struct_rev = 0x01;
+ /* internal length, excluding code */
+ pis->length = ((void *)&(pis->code) - (void *)&(pis->signature));
+ /* the code to be executed, pointed to by entry_point_offset */
+ pis->code[0] = 0xCD; /* INT */
+ pis->code[1] = PMM_INT_NUM; /* my selfdefined PMM INT number */
+ pis->code[2] = 0xCB; /* RETF */
+ /* set the entry_point_offset, it should point to pis->code, segment is the segment of
+ * this struct. Since pis->length is the length of the struct excluding code, offset+pis->length
+ * points to the code... it's that simple ;-)
+ */
+ out32le(&(pis->entry_point_offset),
+ (u32) segment << 16 | (u32) (offset + pis->length));
+ /* checksum calculation */
+ u8 i;
+ u8 checksum = 0;
+ for (i = 0; i < pis->length; i++) {
+ checksum += *(((u8 *) pis) + i);
+ }
+ pis->checksum = ((u8) 0) - checksum;
+ CHECK_DBG(DEBUG_PMM) {
+ DEBUG_PRINTF_PMM("PMM Structure:\n");
+ dump((void *)pis, sizeof(pmm_information_t));
+ }
+ return sizeof(pmm_information_t);
+}
+
+/* handle the selfdefined interrupt, this is executed, when the PMM Entry Point
+ * is executed, it must handle all PMM requests
+ */
+void pmm_handleInt()
+{
+ u32 rval = 0;
+ u16 function, flags;
+ u32 handle, length;
+ u32 i, j;
+ u32 buffer;
+ /* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ * according to the PMM Spec "the flags and all registers, except DX and AX
+ * are preserved across calls to PMM"
+ * so we save M.x86 and in :exit label we restore it, however, this means that no
+ * returns must be used in this function, any exit must use goto exit!
+ * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+ */
+ X86EMU_regs backup_regs = M.x86;
+ pop_long(); /* pop the return address, this is already saved in INT handler, we don't need
+ to remember this. */
+ function = pop_word();
+ switch (function) {
+ case 0:
+ /* function pmmAllocate */
+ length = pop_long();
+ length *= 16; /* length is passed in "paragraphs" of 16 bytes each */
+ handle = pop_long();
+ flags = pop_word();
+ DEBUG_PRINTF_PMM
+ ("%s: pmmAllocate: Length: %x, Handle: %x, Flags: %x\n",
+ __func__, length, handle, flags);
+ if ((flags & 0x1) != 0) {
+ /* request to allocate in conventional memory */
+ if (curr_pmm_allocation_index >= MAX_PMM_AREAS) {
+ printf
+ ("%s: pmmAllocate: Maximum Number of allocatable areas reached (%d), cannot allocate more memory!\n",
+ __func__, MAX_PMM_AREAS);
+ rval = 0;
+ goto exit;
+ }
+ /* some ROMs seem to be confused by offset 0, so lets start at 0x100 */
+ u32 next_offset = 0x100;
+ pmm_allocation_t *pmm_alloc =
+ &(pmm_allocation_array[curr_pmm_allocation_index]);
+ if (curr_pmm_allocation_index != 0) {
+ /* we have already allocated... get the new next_offset
+ * from the previous pmm_allocation_t */
+ next_offset =
+ pmm_allocation_array
+ [curr_pmm_allocation_index - 1].offset +
+ pmm_allocation_array
+ [curr_pmm_allocation_index - 1].length;
+ }
+ DEBUG_PRINTF_PMM("%s: next_offset: 0x%x\n",
+ __func__, next_offset);
+ if (length == 0) {
+ /* largest possible block size requested, we have on segment
+ * to allocate, so largest possible is segment size (0xFFFF)
+ * minus next_offset
+ */
+ rval = 0xFFFF - next_offset;
+ goto exit;
+ }
+ u32 align = 0;
+ if (((flags & 0x4) != 0) && (length > 0)) {
+ /* align to least significant bit set in length param */
+ u8 lsb = 0;
+ while (((length >> lsb) & 0x1) == 0) {
+ lsb++;
+ }
+ align = 1 << lsb;
+ }
+ /* always align at least to paragraph (16byte) boundary
+ * hm... since the length is always in paragraphs, we cannot
+ * align outside of paragraphs anyway... so this check might
+ * be unnecessary...*/
+ if (align < 0x10) {
+ align = 0x10;
+ }
+ DEBUG_PRINTF_PMM("%s: align: 0x%x\n", __func__,
+ align);
+ if ((next_offset & (align - 1)) != 0) {
+ /* not yet aligned... align! */
+ next_offset += align;
+ next_offset &= ~(align - 1);
+ }
+ if ((next_offset + length) > 0xFFFF) {
+ rval = 0;
+ printf
+ ("%s: pmmAllocate: Not enough memory available for allocation!\n",
+ __func__);
+ goto exit;
+ }
+ curr_pmm_allocation_index++;
+ /* remember the values in pmm_allocation_array */
+ pmm_alloc->handle = handle;
+ pmm_alloc->offset = next_offset;
+ pmm_alloc->length = length;
+ /* return the 32bit "physical" address, i.e. combination of segment and offset */
+ rval = ((u32) (PMM_CONV_SEGMENT << 16)) | next_offset;
+ DEBUG_PRINTF_PMM
+ ("%s: pmmAllocate: allocated memory at %x\n",
+ __func__, rval);
+ } else {
+ rval = 0;
+ printf
+ ("%s: pmmAllocate: allocation in extended memory not supported!\n",
+ __func__);
+ }
+ goto exit;
+ case 1:
+ /* function pmmFind */
+ handle = pop_long(); /* the handle to lookup */
+ DEBUG_PRINTF_PMM("%s: pmmFind: Handle: %x\n", __func__,
+ handle);
+ i = 0;
+ for (i = 0; i < curr_pmm_allocation_index; i++) {
+ if (pmm_allocation_array[i].handle == handle) {
+ DEBUG_PRINTF_PMM
+ ("%s: pmmFind: found allocated memory at %x\n",
+ __func__, rval);
+ /* return the 32bit "physical" address, i.e. combination of segment and offset */
+ rval =
+ ((u32) (PMM_CONV_SEGMENT << 16)) |
+ pmm_allocation_array[i].offset;
+ }
+ }
+ if (rval == 0) {
+ DEBUG_PRINTF_PMM
+ ("%s: pmmFind: handle (%x) not found!\n",
+ __func__, handle);
+ }
+ goto exit;
+ case 2:
+ /* function pmmDeallocate */
+ buffer = pop_long();
+ /* since argument is the address of the PMM block (including the segment,
+ * we need to remove the segment to get the offset
+ */
+ buffer = buffer ^ ((u32) PMM_CONV_SEGMENT << 16);
+ DEBUG_PRINTF_PMM("%s: pmmDeallocate: PMM segment offset: %x\n",
+ __func__, buffer);
+ i = 0;
+ /* rval = 0 means we deallocated the buffer, so set it to 1 in case we dont find it and
+ * thus cannot deallocate
+ */
+ rval = 1;
+ for (i = 0; i < curr_pmm_allocation_index; i++) {
+ DEBUG_PRINTF_PMM("%d: %x\n", i,
+ pmm_allocation_array[i].handle);
+ if (pmm_allocation_array[i].offset == buffer) {
+ /* we found the requested buffer, rval = 0 */
+ rval = 0;
+ DEBUG_PRINTF_PMM
+ ("%s: pmmDeallocate: found allocated memory at index: %d\n",
+ __func__, i);
+ /* copy the remaining elements in pmm_allocation_array one position up */
+ j = i;
+ for (; j < curr_pmm_allocation_index; j++) {
+ pmm_allocation_array[j] =
+ pmm_allocation_array[j + 1];
+ }
+ /* move curr_pmm_allocation_index one up, too */
+ curr_pmm_allocation_index--;
+ /* finally clean last element */
+ pmm_allocation_array[curr_pmm_allocation_index].
+ handle = 0;
+ pmm_allocation_array[curr_pmm_allocation_index].
+ offset = 0;
+ pmm_allocation_array[curr_pmm_allocation_index].
+ length = 0;
+ break;
+ }
+ }
+ if (rval != 0) {
+ DEBUG_PRINTF_PMM
+ ("%s: pmmDeallocate: offset (%x) not found, cannot deallocate!\n",
+ __func__, buffer);
+ }
+ goto exit;
+ default:
+ /* invalid/unimplemented function */
+ printf("%s: invalid PMM function (0x%04x) called!\n",
+ __func__, function);
+ /* PMM spec says if function is invalid, return 0xFFFFFFFF */
+ rval = 0xFFFFFFFF;
+ goto exit;
+ }
+ exit:
+ /* exit handler of this function, restore registers, put return value in DX:AX */
+ M.x86 = backup_regs;
+ M.x86.R_DX = (u16) ((rval >> 16) & 0xFFFF);
+ M.x86.R_AX = (u16) (rval & 0xFFFF);
+ CHECK_DBG(DEBUG_PMM) {
+ DEBUG_PRINTF_PMM("%s: dump of pmm_allocation_array:\n",
+ __func__);
+ for (i = 0; i < MAX_PMM_AREAS; i++) {
+ DEBUG_PRINTF_PMM
+ ("%d:\n\thandle: %x\n\toffset: %x\n\tlength: %x\n",
+ i, pmm_allocation_array[i].handle,
+ pmm_allocation_array[i].offset,
+ pmm_allocation_array[i].length);
+ }
+ }
+ return;
+}
+
+/* This function tests the pmm_handleInt() function above. */
+void pmm_test(void)
+{
+ u32 handle, length, addr;
+ u16 function, flags;
+ /*-------------------- Test simple allocation/find/deallocation ----------------------------- */
+ function = 0; /* pmmAllocate */
+ handle = 0xdeadbeef;
+ length = 16; /* in 16byte paragraphs, so we allocate 256 bytes... */
+ flags = 0x1; /* conventional memory, unaligned */
+ /* setup stack for call to pmm_handleInt() */
+ push_word(flags);
+ push_long(handle);
+ push_long(length);
+ push_word(function);
+ push_long(0); /* This is the return address for the ABI, unused in this implementation */
+ pmm_handleInt();
+ addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX;
+ DEBUG_PRINTF_PMM("%s: allocated memory at: %04x:%04x\n", __func__,
+ M.x86.R_DX, M.x86.R_AX);
+ function = 1; /* pmmFind */
+ push_long(handle);
+ push_word(function);
+ push_long(0); /* This is the return address for the ABI, unused in this implementation */
+ pmm_handleInt();
+ DEBUG_PRINTF_PMM("%s: found memory at: %04x:%04x (expected: %08x)\n",
+ __func__, M.x86.R_DX, M.x86.R_AX, addr);
+ function = 2; /* pmmDeallocate */
+ push_long(addr);
+ push_word(function);
+ push_long(0); /* This is the return address for the ABI, unused in this implementation */
+ pmm_handleInt();
+ DEBUG_PRINTF_PMM
+ ("%s: freed memory rval: %04x:%04x (expected: 0000:0000)\n",
+ __func__, M.x86.R_DX, M.x86.R_AX);
+ /*-------------------- Test aligned allocation/deallocation ----------------------------- */
+ function = 0; /* pmmAllocate */
+ handle = 0xdeadbeef;
+ length = 257; /* in 16byte paragraphs, so we allocate 4KB + 16 bytes... */
+ flags = 0x1; /* conventional memory, unaligned */
+ /* setup stack for call to pmm_handleInt() */
+ push_word(flags);
+ push_long(handle);
+ push_long(length);
+ push_word(function);
+ push_long(0); /* This is the return address for the ABI, unused in this implementation */
+ pmm_handleInt();
+ addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX;
+ DEBUG_PRINTF_PMM("%s: allocated memory at: %04x:%04x\n", __func__,
+ M.x86.R_DX, M.x86.R_AX);
+ function = 0; /* pmmAllocate */
+ handle = 0xf00d4b0b;
+ length = 128; /* in 16byte paragraphs, so we allocate 2KB... */
+ flags = 0x5; /* conventional memory, aligned */
+ /* setup stack for call to pmm_handleInt() */
+ push_word(flags);
+ push_long(handle);
+ push_long(length);
+ push_word(function);
+ push_long(0); /* This is the return address for the ABI, unused in this implementation */
+ pmm_handleInt();
+ /* the address should be aligned to 0x800, so probably it is at offset 0x1800... */
+ addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX;
+ DEBUG_PRINTF_PMM("%s: allocated memory at: %04x:%04x\n", __func__,
+ M.x86.R_DX, M.x86.R_AX);
+ function = 1; /* pmmFind */
+ push_long(handle);
+ push_word(function);
+ push_long(0); /* This is the return address for the ABI, unused in this implementation */
+ pmm_handleInt();
+ addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX;
+ function = 2; /* pmmDeallocate */
+ push_long(addr);
+ push_word(function);
+ push_long(0); /* This is the return address for the ABI, unused in this implementation */
+ pmm_handleInt();
+ DEBUG_PRINTF_PMM
+ ("%s: freed memory rval: %04x:%04x (expected: 0000:0000)\n",
+ __func__, M.x86.R_DX, M.x86.R_AX);
+ handle = 0xdeadbeef;
+ function = 1; /* pmmFind */
+ push_long(handle);
+ push_word(function);
+ push_long(0); /* This is the return address for the ABI, unused in this implementation */
+ pmm_handleInt();
+ addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX;
+ function = 2; /* pmmDeallocate */
+ push_long(addr);
+ push_word(function);
+ push_long(0); /* This is the return address for the ABI, unused in this implementation */
+ pmm_handleInt();
+ DEBUG_PRINTF_PMM
+ ("%s: freed memory rval: %04x:%04x (expected: 0000:0000)\n",
+ __func__, M.x86.R_DX, M.x86.R_AX);
+ /*-------------------- Test out of memory allocation ----------------------------- */
+ function = 0; /* pmmAllocate */
+ handle = 0xdeadbeef;
+ length = 0; /* length zero means, give me the largest possible block */
+ flags = 0x1; /* conventional memory, unaligned */
+ /* setup stack for call to pmm_handleInt() */
+ push_word(flags);
+ push_long(handle);
+ push_long(length);
+ push_word(function);
+ push_long(0); /* This is the return address for the ABI, unused in this implementation */
+ pmm_handleInt();
+ length = ((u32) M.x86.R_DX << 16) | M.x86.R_AX;
+ length /= 16; /* length in paragraphs */
+ DEBUG_PRINTF_PMM("%s: largest possible length: %08x\n", __func__,
+ length);
+ function = 0; /* pmmAllocate */
+ flags = 0x1; /* conventional memory, aligned */
+ /* setup stack for call to pmm_handleInt() */
+ push_word(flags);
+ push_long(handle);
+ push_long(length);
+ push_word(function);
+ push_long(0); /* This is the return address for the ABI, unused in this implementation */
+ pmm_handleInt();
+ addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX;
+ DEBUG_PRINTF_PMM("%s: allocated memory at: %04x:%04x\n", __func__,
+ M.x86.R_DX, M.x86.R_AX);
+ function = 0; /* pmmAllocate */
+ length = 1;
+ handle = 0xf00d4b0b;
+ flags = 0x1; /* conventional memory, aligned */
+ /* setup stack for call to pmm_handleInt() */
+ push_word(flags);
+ push_long(handle);
+ push_long(length);
+ push_word(function);
+ push_long(0); /* This is the return address for the ABI, unused in this implementation */
+ pmm_handleInt();
+ /* this should fail, so 0x0 should be returned */
+ addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX;
+ DEBUG_PRINTF_PMM
+ ("%s: allocated memory at: %04x:%04x expected: 0000:0000\n",
+ __func__, M.x86.R_DX, M.x86.R_AX);
+ handle = 0xdeadbeef;
+ function = 1; /* pmmFind */
+ push_long(handle);
+ push_word(function);
+ push_long(0); /* This is the return address for the ABI, unused in this implementation */
+ pmm_handleInt();
+ addr = ((u32) M.x86.R_DX << 16) | M.x86.R_AX;
+ function = 2; /* pmmDeallocate */
+ push_long(addr);
+ push_word(function);
+ push_long(0); /* This is the return address for the ABI, unused in this implementation */
+ pmm_handleInt();
+ DEBUG_PRINTF_PMM
+ ("%s: freed memory rval: %04x:%04x (expected: 0000:0000)\n",
+ __func__, M.x86.R_DX, M.x86.R_AX);
+}
--- /dev/null
+/****************************************************************************
+ * YABEL BIOS Emulator
+ *
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Copyright (c) 2008 Pattrick Hueper <phueper@hueper.net>
+ ****************************************************************************/
+
+#ifndef _YABEL_PMM_H_
+#define _YABEL_PMM_H_
+
+#include <types.h>
+
+/* PMM Structure see PMM Spec Version 1.01 Chapter 3.1.1
+ * (search web for specspmm101.pdf)
+ */
+typedef struct {
+ u8 signature[4];
+ u8 struct_rev;
+ u8 length;
+ u8 checksum;
+ u32 entry_point_offset;
+ u8 reserved[5];
+ /* Code is not part of the speced PMM struct, however, since I cannot
+ * put the handling of PMM in the virtual memory (I dont want to hack it
+ * together in x86 assembly ;-)) this code array is pointed to by
+ * entry_point_offset, in code there is only a INT call and a RETF,
+ * thus every PMM call will issue a PMM INT (only defined in YABEL,
+ * see interrupt.c) and the INT Handler will do the actual PMM work.
+ */
+ u8 code[3];
+} __attribute__ ((__packed__)) pmm_information_t;
+
+/* This function is used to setup the PMM struct in virtual memory
+ * at a certain offset */
+u8 pmm_setup(u16 segment, u16 offset);
+
+/* This is the INT Handler mentioned above, called by my special PMM INT. */
+void pmm_handleInt(void);
+
+void pmm_test(void);
+
+#endif // _YABEL_PMM_H
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * Copyright (c) 2009 Pattrick Hueper <phueper@hueper.net>
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#include <string.h>
+#include <types.h>
+#ifndef CONFIG_COREBOOT_V2
+#include <cpu.h>
+#endif
+
+#include "debug.h"
+
+#include <x86emu/x86emu.h>
+#include <x86emu/regs.h>
+#ifdef CONFIG_COREBOOT_V2
+#include "../x86emu/prim_ops.h"
+#else
+#include <x86emu/prim_ops.h> // for push_word
+#endif
+
+#include "biosemu.h"
+#include "io.h"
+#include "mem.h"
+#include "interrupt.h"
+#include "device.h"
+
+static X86EMU_memFuncs my_mem_funcs = {
+ my_rdb, my_rdw, my_rdl,
+ my_wrb, my_wrw, my_wrl
+};
+
+static X86EMU_pioFuncs my_pio_funcs = {
+ my_inb, my_inw, my_inl,
+ my_outb, my_outw, my_outl
+};
+
+// pointer to VBEInfoBuffer, set by vbe_prepare
+u8 *vbe_info_buffer = 0;
+// virtual BIOS Memory
+u8 *biosmem;
+u32 biosmem_size;
+
+// these structs are for input from and output to OF
+typedef struct {
+ u8 display_type; // 0=NONE, 1= analog, 2=digital
+ u16 screen_width;
+ u16 screen_height;
+ u16 screen_linebytes; // bytes per line in framebuffer, may be more than screen_width
+ u8 color_depth; // color depth in bpp
+ u32 framebuffer_address;
+ u8 edid_block_zero[128];
+} __attribute__ ((__packed__)) screen_info_t;
+
+typedef struct {
+ u8 signature[4];
+ u16 size_reserved;
+ u8 monitor_number;
+ u16 max_screen_width;
+ u8 color_depth;
+} __attribute__ ((__packed__)) screen_info_input_t;
+
+// these structs only store a subset of the VBE defined fields
+// only those needed.
+typedef struct {
+ char signature[4];
+ u16 version;
+ u8 *oem_string_ptr;
+ u32 capabilities;
+ u16 video_mode_list[256]; // lets hope we never have more than 256 video modes...
+ u16 total_memory;
+} vbe_info_t;
+
+typedef struct {
+ u16 video_mode;
+ u8 mode_info_block[256];
+ u16 attributes;
+ u16 linebytes;
+ u16 x_resolution;
+ u16 y_resolution;
+ u8 x_charsize;
+ u8 y_charsize;
+ u8 bits_per_pixel;
+ u8 memory_model;
+ u32 framebuffer_address;
+} vbe_mode_info_t;
+
+typedef struct {
+ u8 port_number; // i.e. monitor number
+ u8 edid_transfer_time;
+ u8 ddc_level;
+ u8 edid_block_zero[128];
+} vbe_ddc_info_t;
+
+static inline u8
+vbe_prepare()
+{
+ vbe_info_buffer = biosmem + (VBE_SEGMENT << 4); // segment:offset off VBE Data Area
+ //clear buffer
+ memset(vbe_info_buffer, 0, 512);
+ //set VbeSignature to "VBE2" to indicate VBE 2.0+ request
+ vbe_info_buffer[0] = 'V';
+ vbe_info_buffer[0] = 'B';
+ vbe_info_buffer[0] = 'E';
+ vbe_info_buffer[0] = '2';
+ // ES:DI store pointer to buffer in virtual mem see vbe_info_buffer above...
+ M.x86.R_EDI = 0x0;
+ M.x86.R_ES = VBE_SEGMENT;
+
+ return 0; // successfull init
+}
+
+// VBE Function 00h
+u8
+vbe_info(vbe_info_t * info)
+{
+ vbe_prepare();
+ // call VBE function 00h (Info Function)
+ M.x86.R_EAX = 0x4f00;
+
+ // enable trace
+ CHECK_DBG(DEBUG_TRACE_X86EMU) {
+ X86EMU_trace_on();
+ }
+ // run VESA Interrupt
+ runInt10();
+
+ if (M.x86.R_AL != 0x4f) {
+ DEBUG_PRINTF_VBE("%s: VBE Info Function NOT supported! AL=%x\n",
+ __func__, M.x86.R_AL);
+ return -1;
+ }
+
+ if (M.x86.R_AH != 0x0) {
+ DEBUG_PRINTF_VBE
+ ("%s: VBE Info Function Return Code NOT OK! AH=%x\n",
+ __func__, M.x86.R_AH);
+ return M.x86.R_AH;
+ }
+ //printf("VBE Info Dump:");
+ //dump(vbe_info_buffer, 64);
+
+ //offset 0: signature
+ info->signature[0] = vbe_info_buffer[0];
+ info->signature[1] = vbe_info_buffer[1];
+ info->signature[2] = vbe_info_buffer[2];
+ info->signature[3] = vbe_info_buffer[3];
+
+ // offset 4: 16bit le containing VbeVersion
+ info->version = in16le(vbe_info_buffer + 4);
+
+ // offset 6: 32bit le containg segment:offset of OEM String in virtual Mem.
+ info->oem_string_ptr =
+ biosmem + ((in16le(vbe_info_buffer + 8) << 4) +
+ in16le(vbe_info_buffer + 6));
+
+ // offset 10: 32bit le capabilities
+ info->capabilities = in32le(vbe_info_buffer + 10);
+
+ // offset 14: 32 bit le containing segment:offset of supported video mode table
+ u16 *video_mode_ptr;
+ video_mode_ptr =
+ (u16 *) (biosmem +
+ ((in16le(vbe_info_buffer + 16) << 4) +
+ in16le(vbe_info_buffer + 14)));
+ u32 i = 0;
+ do {
+ info->video_mode_list[i] = in16le(video_mode_ptr + i);
+ i++;
+ }
+ while ((i <
+ (sizeof(info->video_mode_list) /
+ sizeof(info->video_mode_list[0])))
+ && (info->video_mode_list[i - 1] != 0xFFFF));
+
+ //offset 18: 16bit le total memory in 64KB blocks
+ info->total_memory = in16le(vbe_info_buffer + 18);
+
+ return 0;
+}
+
+// VBE Function 01h
+u8
+vbe_get_mode_info(vbe_mode_info_t * mode_info)
+{
+ vbe_prepare();
+ // call VBE function 01h (Return VBE Mode Info Function)
+ M.x86.R_EAX = 0x4f01;
+ M.x86.R_CX = mode_info->video_mode;
+
+ // enable trace
+ CHECK_DBG(DEBUG_TRACE_X86EMU) {
+ X86EMU_trace_on();
+ }
+ // run VESA Interrupt
+ runInt10();
+
+ if (M.x86.R_AL != 0x4f) {
+ DEBUG_PRINTF_VBE
+ ("%s: VBE Return Mode Info Function NOT supported! AL=%x\n",
+ __func__, M.x86.R_AL);
+ return -1;
+ }
+
+ if (M.x86.R_AH != 0x0) {
+ DEBUG_PRINTF_VBE
+ ("%s: VBE Return Mode Info (mode: %04x) Function Return Code NOT OK! AH=%02x\n",
+ __func__, mode_info->video_mode, M.x86.R_AH);
+ return M.x86.R_AH;
+ }
+ //pointer to mode_info_block is in ES:DI
+ memcpy(mode_info->mode_info_block,
+ biosmem + ((M.x86.R_ES << 4) + M.x86.R_DI),
+ sizeof(mode_info->mode_info_block));
+
+ //printf("Mode Info Dump:");
+ //dump(mode_info_block, 64);
+
+ // offset 0: 16bit le mode attributes
+ mode_info->attributes = in16le(mode_info->mode_info_block);
+
+ // offset 16: 16bit le bytes per scan line
+ mode_info->linebytes = in16le(mode_info->mode_info_block + 16);
+
+ // offset 18: 16bit le x resolution
+ mode_info->x_resolution = in16le(mode_info->mode_info_block + 18);
+
+ // offset 20: 16bit le y resolution
+ mode_info->y_resolution = in16le(mode_info->mode_info_block + 20);
+
+ // offset 22: 8bit le x charsize
+ mode_info->x_charsize = *(mode_info->mode_info_block + 22);
+
+ // offset 23: 8bit le y charsize
+ mode_info->y_charsize = *(mode_info->mode_info_block + 23);
+
+ // offset 25: 8bit le bits per pixel
+ mode_info->bits_per_pixel = *(mode_info->mode_info_block + 25);
+
+ // offset 27: 8bit le memory model
+ mode_info->memory_model = *(mode_info->mode_info_block + 27);
+
+ // offset 40: 32bit le containg offset of frame buffer memory ptr
+ mode_info->framebuffer_address =
+ in32le(mode_info->mode_info_block + 40);
+
+ return 0;
+}
+
+// VBE Function 02h
+u8
+vbe_set_mode(vbe_mode_info_t * mode_info)
+{
+ vbe_prepare();
+ // call VBE function 02h (Set VBE Mode Function)
+ M.x86.R_EAX = 0x4f02;
+ M.x86.R_BX = mode_info->video_mode;
+ M.x86.R_BX |= 0x4000; // set bit 14 to request linear framebuffer mode
+ M.x86.R_BX &= 0x7FFF; // clear bit 15 to request clearing of framebuffer
+
+ DEBUG_PRINTF_VBE("%s: setting mode: 0x%04x\n", __func__,
+ M.x86.R_BX);
+
+ // enable trace
+ CHECK_DBG(DEBUG_TRACE_X86EMU) {
+ X86EMU_trace_on();
+ }
+ // run VESA Interrupt
+ runInt10();
+
+ if (M.x86.R_AL != 0x4f) {
+ DEBUG_PRINTF_VBE
+ ("%s: VBE Set Mode Function NOT supported! AL=%x\n",
+ __func__, M.x86.R_AL);
+ return -1;
+ }
+
+ if (M.x86.R_AH != 0x0) {
+ DEBUG_PRINTF_VBE
+ ("%s: mode: %x VBE Set Mode Function Return Code NOT OK! AH=%x\n",
+ __func__, mode_info->video_mode, M.x86.R_AH);
+ return M.x86.R_AH;
+ }
+ return 0;
+}
+
+//VBE Function 08h
+u8
+vbe_set_palette_format(u8 format)
+{
+ vbe_prepare();
+ // call VBE function 09h (Set/Get Palette Data Function)
+ M.x86.R_EAX = 0x4f08;
+ M.x86.R_BL = 0x00; // set format
+ M.x86.R_BH = format;
+
+ DEBUG_PRINTF_VBE("%s: setting palette format: %d\n", __func__,
+ format);
+
+ // enable trace
+ CHECK_DBG(DEBUG_TRACE_X86EMU) {
+ X86EMU_trace_on();
+ }
+ // run VESA Interrupt
+ runInt10();
+
+ if (M.x86.R_AL != 0x4f) {
+ DEBUG_PRINTF_VBE
+ ("%s: VBE Set Palette Format Function NOT supported! AL=%x\n",
+ __func__, M.x86.R_AL);
+ return -1;
+ }
+
+ if (M.x86.R_AH != 0x0) {
+ DEBUG_PRINTF_VBE
+ ("%s: VBE Set Palette Format Function Return Code NOT OK! AH=%x\n",
+ __func__, M.x86.R_AH);
+ return M.x86.R_AH;
+ }
+ return 0;
+}
+
+// VBE Function 09h
+u8
+vbe_set_color(u16 color_number, u32 color_value)
+{
+ vbe_prepare();
+ // call VBE function 09h (Set/Get Palette Data Function)
+ M.x86.R_EAX = 0x4f09;
+ M.x86.R_BL = 0x00; // set color
+ M.x86.R_CX = 0x01; // set only one entry
+ M.x86.R_DX = color_number;
+ // ES:DI is address where color_value is stored, we store it at 2000:0000
+ M.x86.R_ES = 0x2000;
+ M.x86.R_DI = 0x0;
+
+ // store color value at ES:DI
+ out32le(biosmem + (M.x86.R_ES << 4) + M.x86.R_DI, color_value);
+
+ DEBUG_PRINTF_VBE("%s: setting color #%x: 0x%04x\n", __func__,
+ color_number, color_value);
+
+ // enable trace
+ CHECK_DBG(DEBUG_TRACE_X86EMU) {
+ X86EMU_trace_on();
+ }
+ // run VESA Interrupt
+ runInt10();
+
+ if (M.x86.R_AL != 0x4f) {
+ DEBUG_PRINTF_VBE
+ ("%s: VBE Set Palette Function NOT supported! AL=%x\n",
+ __func__, M.x86.R_AL);
+ return -1;
+ }
+
+ if (M.x86.R_AH != 0x0) {
+ DEBUG_PRINTF_VBE
+ ("%s: VBE Set Palette Function Return Code NOT OK! AH=%x\n",
+ __func__, M.x86.R_AH);
+ return M.x86.R_AH;
+ }
+ return 0;
+}
+
+u8
+vbe_get_color(u16 color_number, u32 * color_value)
+{
+ vbe_prepare();
+ // call VBE function 09h (Set/Get Palette Data Function)
+ M.x86.R_EAX = 0x4f09;
+ M.x86.R_BL = 0x00; // get color
+ M.x86.R_CX = 0x01; // get only one entry
+ M.x86.R_DX = color_number;
+ // ES:DI is address where color_value is stored, we store it at 2000:0000
+ M.x86.R_ES = 0x2000;
+ M.x86.R_DI = 0x0;
+
+ // enable trace
+ CHECK_DBG(DEBUG_TRACE_X86EMU) {
+ X86EMU_trace_on();
+ }
+ // run VESA Interrupt
+ runInt10();
+
+ if (M.x86.R_AL != 0x4f) {
+ DEBUG_PRINTF_VBE
+ ("%s: VBE Set Palette Function NOT supported! AL=%x\n",
+ __func__, M.x86.R_AL);
+ return -1;
+ }
+
+ if (M.x86.R_AH != 0x0) {
+ DEBUG_PRINTF_VBE
+ ("%s: VBE Set Palette Function Return Code NOT OK! AH=%x\n",
+ __func__, M.x86.R_AH);
+ return M.x86.R_AH;
+ }
+ // read color value from ES:DI
+ *color_value = in32le(biosmem + (M.x86.R_ES << 4) + M.x86.R_DI);
+
+ DEBUG_PRINTF_VBE("%s: getting color #%x --> 0x%04x\n", __func__,
+ color_number, *color_value);
+
+ return 0;
+}
+
+// VBE Function 15h
+u8
+vbe_get_ddc_info(vbe_ddc_info_t * ddc_info)
+{
+ vbe_prepare();
+ // call VBE function 15h (DDC Info Function)
+ M.x86.R_EAX = 0x4f15;
+ M.x86.R_BL = 0x00; // get DDC Info
+ M.x86.R_CX = ddc_info->port_number;
+ M.x86.R_ES = 0x0;
+ M.x86.R_DI = 0x0;
+
+ // enable trace
+ CHECK_DBG(DEBUG_TRACE_X86EMU) {
+ X86EMU_trace_on();
+ }
+ // run VESA Interrupt
+ runInt10();
+
+ if (M.x86.R_AL != 0x4f) {
+ DEBUG_PRINTF_VBE
+ ("%s: VBE Get DDC Info Function NOT supported! AL=%x\n",
+ __func__, M.x86.R_AL);
+ return -1;
+ }
+
+ if (M.x86.R_AH != 0x0) {
+ DEBUG_PRINTF_VBE
+ ("%s: port: %x VBE Get DDC Info Function Return Code NOT OK! AH=%x\n",
+ __func__, ddc_info->port_number, M.x86.R_AH);
+ return M.x86.R_AH;
+ }
+ // BH = approx. time in seconds to transfer one EDID block
+ ddc_info->edid_transfer_time = M.x86.R_BH;
+ // BL = DDC Level
+ ddc_info->ddc_level = M.x86.R_BL;
+
+ vbe_prepare();
+ // call VBE function 15h (DDC Info Function)
+ M.x86.R_EAX = 0x4f15;
+ M.x86.R_BL = 0x01; // read EDID
+ M.x86.R_CX = ddc_info->port_number;
+ M.x86.R_DX = 0x0; // block number
+ // ES:DI is address where EDID is stored, we store it at 2000:0000
+ M.x86.R_ES = 0x2000;
+ M.x86.R_DI = 0x0;
+
+ // enable trace
+ CHECK_DBG(DEBUG_TRACE_X86EMU) {
+ X86EMU_trace_on();
+ }
+ // run VESA Interrupt
+ runInt10();
+
+ if (M.x86.R_AL != 0x4f) {
+ DEBUG_PRINTF_VBE
+ ("%s: VBE Read EDID Function NOT supported! AL=%x\n",
+ __func__, M.x86.R_AL);
+ return -1;
+ }
+
+ if (M.x86.R_AH != 0x0) {
+ DEBUG_PRINTF_VBE
+ ("%s: port: %x VBE Read EDID Function Return Code NOT OK! AH=%x\n",
+ __func__, ddc_info->port_number, M.x86.R_AH);
+ return M.x86.R_AH;
+ }
+
+ memcpy(ddc_info->edid_block_zero,
+ biosmem + (M.x86.R_ES << 4) + M.x86.R_DI,
+ sizeof(ddc_info->edid_block_zero));
+
+ return 0;
+}
+
+u32
+vbe_get_info(u8 argc, char ** argv)
+{
+ u8 rval;
+ u32 i;
+ if (argc < 4) {
+ printf
+ ("Usage %s <vmem_base> <device_path> <address of screen_info_t>\n",
+ argv[0]);
+ int i = 0;
+ for (i = 0; i < argc; i++) {
+ printf("argv[%d]: %s\n", i, argv[i]);
+ }
+ return -1;
+ }
+ // get a copy of input struct...
+ screen_info_input_t input =
+ *((screen_info_input_t *) strtoul((char *) argv[4], 0, 16));
+ // output is pointer to the address passed as argv[4]
+ screen_info_t *output =
+ (screen_info_t *) strtoul((char *) argv[4], 0, 16);
+ // zero output
+ memset(output, 0, sizeof(screen_info_t));
+
+ // argv[1] is address of virtual BIOS mem...
+ // argv[2] is the size
+ biosmem = (u8 *) strtoul(argv[1], 0, 16);
+ biosmem_size = strtoul(argv[2], 0, 16);;
+ if (biosmem_size < MIN_REQUIRED_VMEM_SIZE) {
+ printf("Error: Not enough virtual memory: %x, required: %x!\n",
+ biosmem_size, MIN_REQUIRED_VMEM_SIZE);
+ return -1;
+ }
+ // argv[3] is the device to open and use...
+ if (dev_init((char *) argv[3]) != 0) {
+ printf("Error initializing device!\n");
+ return -1;
+ }
+ //setup interrupt handler
+ X86EMU_intrFuncs intrFuncs[256];
+ for (i = 0; i < 256; i++)
+ intrFuncs[i] = handleInterrupt;
+ X86EMU_setupIntrFuncs(intrFuncs);
+ X86EMU_setupPioFuncs(&my_pio_funcs);
+ X86EMU_setupMemFuncs(&my_mem_funcs);
+
+ // set mem_base
+ M.mem_base = (long) biosmem;
+ M.mem_size = biosmem_size;
+ DEBUG_PRINTF_VBE("membase set: %08x, size: %08x\n", (int) M.mem_base,
+ (int) M.mem_size);
+
+ vbe_info_t info;
+ rval = vbe_info(&info);
+ if (rval != 0)
+ return rval;
+
+ DEBUG_PRINTF_VBE("VbeSignature: %s\n", info.signature);
+ DEBUG_PRINTF_VBE("VbeVersion: 0x%04x\n", info.version);
+ DEBUG_PRINTF_VBE("OemString: %s\n", info.oem_string_ptr);
+ DEBUG_PRINTF_VBE("Capabilities:\n");
+ DEBUG_PRINTF_VBE("\tDAC: %s\n",
+ (info.capabilities & 0x1) ==
+ 0 ? "fixed 6bit" : "switchable 6/8bit");
+ DEBUG_PRINTF_VBE("\tVGA: %s\n",
+ (info.capabilities & 0x2) ==
+ 0 ? "compatible" : "not compatible");
+ DEBUG_PRINTF_VBE("\tRAMDAC: %s\n",
+ (info.capabilities & 0x4) ==
+ 0 ? "normal" : "use blank bit in Function 09h");
+
+ // argv[4] may be a pointer with enough space to return screen_info_t
+ // as input, it must contain a screen_info_input_t with the following content:
+ // byte[0:3] = "DDC\0" (zero-terminated signature header)
+ // byte[4:5] = reserved space for the return struct... just in case we ever change
+ // the struct and dont have reserved enough memory (and let's hope the struct
+ // never gets larger than 64KB)
+ // byte[6] = monitor port number for DDC requests ("only" one byte... so lets hope we never have more than 255 monitors...
+ // byte[7:8] = max. screen width (OF may want to limit this)
+ // byte[9] = required color depth in bpp
+ if (strncmp((char *) input.signature, "DDC", 4) != 0) {
+ printf
+ ("%s: Invalid input signature! expected: %s, is: %s\n",
+ __func__, "DDC", input.signature);
+ return -1;
+ }
+ if (input.size_reserved != sizeof(screen_info_t)) {
+ printf
+ ("%s: Size of return struct is wrong, required: %d, available: %d\n",
+ __func__, (int) sizeof(screen_info_t),
+ input.size_reserved);
+ return -1;
+ }
+
+ vbe_ddc_info_t ddc_info;
+ ddc_info.port_number = input.monitor_number;
+ vbe_get_ddc_info(&ddc_info);
+
+#if 0
+ DEBUG_PRINTF_VBE("DDC: edid_tranfer_time: %d\n",
+ ddc_info.edid_transfer_time);
+ DEBUG_PRINTF_VBE("DDC: ddc_level: %x\n", ddc_info.ddc_level);
+ DEBUG_PRINTF_VBE("DDC: EDID: \n");
+ CHECK_DBG(DEBUG_VBE) {
+ dump(ddc_info.edid_block_zero,
+ sizeof(ddc_info.edid_block_zero));
+ }
+#endif
+ if (*((u64 *) ddc_info.edid_block_zero) !=
+ (u64) 0x00FFFFFFFFFFFF00) {
+ // invalid EDID signature... probably no monitor
+
+ output->display_type = 0x0;
+ return 0;
+ } else if ((ddc_info.edid_block_zero[20] & 0x80) != 0) {
+ // digital display
+ output->display_type = 2;
+ } else {
+ // analog
+ output->display_type = 1;
+ }
+ DEBUG_PRINTF_VBE("DDC: found display type %d\n", output->display_type);
+ memcpy(output->edid_block_zero, ddc_info.edid_block_zero,
+ sizeof(ddc_info.edid_block_zero));
+ i = 0;
+ vbe_mode_info_t mode_info;
+ vbe_mode_info_t best_mode_info;
+ // initialize best_mode to 0
+ memset(&best_mode_info, 0, sizeof(best_mode_info));
+ while ((mode_info.video_mode = info.video_mode_list[i]) != 0xFFFF) {
+ //DEBUG_PRINTF_VBE("%x: Mode: %04x\n", i, mode_info.video_mode);
+ vbe_get_mode_info(&mode_info);
+#if 0
+ DEBUG_PRINTF_VBE("Video Mode 0x%04x available, %s\n",
+ mode_info.video_mode,
+ (mode_info.attributes & 0x1) ==
+ 0 ? "not supported" : "supported");
+ DEBUG_PRINTF_VBE("\tTTY: %s\n",
+ (mode_info.attributes & 0x4) ==
+ 0 ? "no" : "yes");
+ DEBUG_PRINTF_VBE("\tMode: %s %s\n",
+ (mode_info.attributes & 0x8) ==
+ 0 ? "monochrome" : "color",
+ (mode_info.attributes & 0x10) ==
+ 0 ? "text" : "graphics");
+ DEBUG_PRINTF_VBE("\tVGA: %s\n",
+ (mode_info.attributes & 0x20) ==
+ 0 ? "compatible" : "not compatible");
+ DEBUG_PRINTF_VBE("\tWindowed Mode: %s\n",
+ (mode_info.attributes & 0x40) ==
+ 0 ? "yes" : "no");
+ DEBUG_PRINTF_VBE("\tFramebuffer: %s\n",
+ (mode_info.attributes & 0x80) ==
+ 0 ? "no" : "yes");
+ DEBUG_PRINTF_VBE("\tResolution: %dx%d\n",
+ mode_info.x_resolution,
+ mode_info.y_resolution);
+ DEBUG_PRINTF_VBE("\tChar Size: %dx%d\n",
+ mode_info.x_charsize, mode_info.y_charsize);
+ DEBUG_PRINTF_VBE("\tColor Depth: %dbpp\n",
+ mode_info.bits_per_pixel);
+ DEBUG_PRINTF_VBE("\tMemory Model: 0x%x\n",
+ mode_info.memory_model);
+ DEBUG_PRINTF_VBE("\tFramebuffer Offset: %08x\n",
+ mode_info.framebuffer_address);
+#endif
+ if ((mode_info.bits_per_pixel == input.color_depth)
+ && (mode_info.x_resolution <= input.max_screen_width)
+ && ((mode_info.attributes & 0x80) != 0) // framebuffer mode
+ && ((mode_info.attributes & 0x10) != 0) // graphics
+ && ((mode_info.attributes & 0x8) != 0) // color
+ && (mode_info.x_resolution > best_mode_info.x_resolution)) // better than previous best_mode
+ {
+ // yiiiihaah... we found a new best mode
+ memcpy(&best_mode_info, &mode_info, sizeof(mode_info));
+ }
+ i++;
+ }
+
+ if (best_mode_info.video_mode != 0) {
+ DEBUG_PRINTF_VBE
+ ("Best Video Mode found: 0x%x, %dx%d, %dbpp, framebuffer_address: 0x%x\n",
+ best_mode_info.video_mode,
+ best_mode_info.x_resolution,
+ best_mode_info.y_resolution,
+ best_mode_info.bits_per_pixel,
+ best_mode_info.framebuffer_address);
+
+ //printf("Mode Info Dump:");
+ //dump(best_mode_info.mode_info_block, 64);
+
+ // set the video mode
+ vbe_set_mode(&best_mode_info);
+
+ if ((info.capabilities & 0x1) != 0) {
+ // switch to 8 bit palette format
+ vbe_set_palette_format(8);
+ }
+ // setup a palette:
+ // - first 216 colors are mixed colors for each component in 6 steps
+ // (6*6*6=216)
+ // - then 10 shades of the three primary colors
+ // - then 10 shades of grey
+ // -------
+ // = 256 colors
+ //
+ // - finally black is color 0 and white color FF (because SLOF expects it
+ // this way...)
+ // this resembles the palette that the kernel/X Server seems to expect...
+
+ u8 mixed_color_values[6] =
+ { 0xFF, 0xDA, 0xB3, 0x87, 0x54, 0x00 };
+ u8 primary_color_values[10] =
+ { 0xF3, 0xE7, 0xCD, 0xC0, 0xA5, 0x96, 0x77, 0x66, 0x3F,
+ 0x27
+ };
+ u8 mc_size = sizeof(mixed_color_values);
+ u8 prim_size = sizeof(primary_color_values);
+
+ u8 curr_color_index;
+ u32 curr_color;
+
+ u8 r, g, b;
+ // 216 mixed colors
+ for (r = 0; r < mc_size; r++) {
+ for (g = 0; g < mc_size; g++) {
+ for (b = 0; b < mc_size; b++) {
+ curr_color_index =
+ (r * mc_size * mc_size) +
+ (g * mc_size) + b;
+ curr_color = 0;
+ curr_color |= ((u32) mixed_color_values[r]) << 16; //red value
+ curr_color |= ((u32) mixed_color_values[g]) << 8; //green value
+ curr_color |= (u32) mixed_color_values[b]; //blue value
+ vbe_set_color(curr_color_index,
+ curr_color);
+ }
+ }
+ }
+
+ // 10 shades of each primary color
+ // red
+ for (r = 0; r < prim_size; r++) {
+ curr_color_index = mc_size * mc_size * mc_size + r;
+ curr_color = ((u32) primary_color_values[r]) << 16;
+ vbe_set_color(curr_color_index, curr_color);
+ }
+ //green
+ for (g = 0; g < prim_size; g++) {
+ curr_color_index =
+ mc_size * mc_size * mc_size + prim_size + g;
+ curr_color = ((u32) primary_color_values[g]) << 8;
+ vbe_set_color(curr_color_index, curr_color);
+ }
+ //blue
+ for (b = 0; b < prim_size; b++) {
+ curr_color_index =
+ mc_size * mc_size * mc_size + prim_size * 2 + b;
+ curr_color = (u32) primary_color_values[b];
+ vbe_set_color(curr_color_index, curr_color);
+ }
+ // 10 shades of grey
+ for (i = 0; i < prim_size; i++) {
+ curr_color_index =
+ mc_size * mc_size * mc_size + prim_size * 3 + i;
+ curr_color = 0;
+ curr_color |= ((u32) primary_color_values[i]) << 16; //red
+ curr_color |= ((u32) primary_color_values[i]) << 8; //green
+ curr_color |= ((u32) primary_color_values[i]); //blue
+ vbe_set_color(curr_color_index, curr_color);
+ }
+
+ // SLOF is using color 0x0 (black) and 0xFF (white) to draw to the screen...
+ vbe_set_color(0x00, 0x00000000);
+ vbe_set_color(0xFF, 0x00FFFFFF);
+
+ output->screen_width = best_mode_info.x_resolution;
+ output->screen_height = best_mode_info.y_resolution;
+ output->screen_linebytes = best_mode_info.linebytes;
+ output->color_depth = best_mode_info.bits_per_pixel;
+ output->framebuffer_address =
+ best_mode_info.framebuffer_address;
+ } else {
+ printf("%s: No suitable video mode found!\n", __func__);
+ //unset display_type...
+ output->display_type = 0;
+ }
+ return 0;
+}
--- /dev/null
+/******************************************************************************
+ * Copyright (c) 2004, 2008 IBM Corporation
+ * All rights reserved.
+ * This program and the accompanying materials
+ * are made available under the terms of the BSD License
+ * which accompanies this distribution, and is available at
+ * http://www.opensource.org/licenses/bsd-license.php
+ *
+ * Contributors:
+ * IBM Corporation - initial implementation
+ *****************************************************************************/
+
+#ifndef _BIOSEMU_VBE_H_
+#define _BIOSEMU_VBE_H_
+
+#endif
projects / coreboot.git / commitdiff