#include <device/resource.h>
#include <console/console.h>
-typedef unsigned long long u64;
-
static struct multiboot_mmap_entry *mb_mem;
struct multiboot_info *mbi;
#if HAVE_ACPI_TABLES==1
#include <stdint.h>
-typedef unsigned long long u64;
#define RSDP_SIG "RSD PTR " /* RSDT Pointer signature */
#define RSDP_NAME "RSDP"
typedef unsigned long int uintmax_t;
#endif
-#undef __HAVE_LONG_LONG__
-
typedef uint8_t u8;
typedef uint16_t u16;
typedef uint32_t u32;
+#if __HAVE_LONG_LONG__
+typedef uint64_t u64;
+#endif
+#undef __HAVE_LONG_LONG__
#endif /* I386_STDINT_H */
comment "Use stage 1 initialization code"
end
+define COREBOOT_V2
+ default 1
+ export always
+ comment "This is used by code to determine v2 vs v3"
+end
+
###############################################
# ROM image options
###############################################
comment "Init x86 ROMs on all PCI devices"
end
+define CONFIG_PCI_OPTION_ROM_RUN_YABEL
+ default 0
+ export used
+ comment "Use Yabel instead of old bios emulator"
+end
+
+define CONFIG_PCI_OPTION_ROM_RUN_VM86
+ default 0
+ export used
+ comment "Use Yabel instead of old bios emulator"
+end
+
define CONFIG_PCI_64BIT_PREF_MEM
default 0
export always
uses CONFIG_PCI_ROM_RUN
uses CONFIG_VGA_ROM_RUN
+
object device.o
object root_device.o
object device_util.o
if CONFIG_PCI_ROM_RUN
object pci_rom.o
- dir emulator
+ dir ../../util/x86emu
else
if CONFIG_VGA_ROM_RUN
object pci_rom.o
- dir emulator
+ dir ../../util/x86emu
end
end
+++ /dev/null
-object biosemu.o
-
-dir pcbios
-dir x86emu
+++ /dev/null
-#include <arch/io.h>
-#include <console/console.h>
-#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);
-
-
-// sys.c
-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);
-
- //if (port != 0x40)
- // printk_debug("inb(0x%04x) = 0x%02x\n", port, val);
-
- return val;
-}
-
-u16 x_inw(u16 port)
-{
- u16 val;
-
- val = inw(port);
-
- //printk_debug("inw(0x%04x) = 0x%04x\n", port, val);
- return val;
-}
-
-u32 x_inl(u16 port)
-{
- u32 val;
-
- val = inl(port);
-
- //printk_debug("inl(0x%04x) = 0x%08x\n", port, val);
- return val;
-}
-
-void x_outb(u16 port, u8 val)
-{
- //if (port != 0x43)
- // printk_debug("outb(0x%02x, 0x%04x)\n", val, port);
- outb(val, port);
-}
-
-void x_outw(u16 port, u16 val)
-{
- //printk_debug("outw(0x%04x, 0x%04x)\n", val, port);
- outw(val, port);
-}
-
-void x_outl(u16 port, u32 val)
-{
- //printk_debug("outl(0x%08x, 0x%04x)\n", val, port);
- 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_debug("int%x vector at %x\n", num, getIntVect(num));
-
- switch (num) {
-#ifndef _PC
- case 0x10:
- case 0x42:
- case 0x6D:
- if (getIntVect(num) == 0x0000) {
- printk_debug("un-inited int 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_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);
-
-// X86EMU_trace_on();
-
- printk_info("entering emulator\n");
-
- X86EMU_exec();
-#endif
-}
+++ /dev/null
-object pcibios.o
\ No newline at end of file
+++ /dev/null
-#include <console/console.h>
-#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 */
- dev = dev_find_device(X86_DX, X86_CX, 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 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
-#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
-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 DEBUG
-
-static void print_encoded_bytes (u16 s, u16 o);
-static void print_decoded_instruction (void);
-static 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();
-}
-
-static 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 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);
-}
-
-static 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 /* 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
-
-#if defined(DEBUG) && (DEBUG == 0)
-#undef DEBUG
-#endif
-
-/*---------------------- 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 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 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 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 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 DEBUG
-# define SINGLE_STEP() if (DEBUG_STEP()) x86emu_single_step()
-#else
-# define SINGLE_STEP()
-#endif
-
-#define TRACE_AND_STEP() \
- TRACE_REGS(); \
- SINGLE_STEP()
-
-#ifdef 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 /* 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 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 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 /* 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 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 /* 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 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 /* 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 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 /* 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 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 /* 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 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 /* 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 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 /* 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 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 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 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 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 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 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 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 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 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 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 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 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 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;
- u16 destval,destval2;
-
- /* Yet another special case instruction. */
- START_OF_INSTR();
- FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef 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) {
- u32 destval;
-
- destval = fetch_data_long(destoffset);
- TRACE_AND_STEP();
- destval = inc_long(destval);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
-
- 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) {
- u32 destval;
-
- destval = fetch_data_long(destoffset);
- TRACE_AND_STEP();
- destval = dec_long(destval);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
-
- 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) {
- u32 destval;
-
- destval = fetch_data_long(destoffset);
- TRACE_AND_STEP();
- push_long(destval);
- } else {
- u16 destval;
-
- destval = fetch_data_word(destoffset);
- TRACE_AND_STEP();
- push_word(destval);
- }
- break;
- }
- } else {
- switch (rh) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = inc_long(*destreg);
- } else {
- u16 *destreg;
-
- 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) {
- u32 *destreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = dec_long(*destreg);
- } else {
- u16 *destreg;
-
- 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) {
- u32 *destreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- push_long(*destreg);
- } else {
- u16 *destreg;
-
- 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,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();
-}
-
-/****************************************************************************
-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();
-}
-
-/***************************************************************************
- * 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"
-#ifdef COREBOOT_VERSION /* Coreboot needs to map printf to printk. */
-#include "arch/io.h"
-#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 */
/*
* This file is part of the coreboot project.
*
- * Copyright (C) 2008 coresystems GmbH
+ * Copyright (C) 2008-2009 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
*/
-typedef uint64_t u64;
-
/* AMD64 SMM State-Save Area
* starts @ 0x7e00
*/
return r;
}
+static inline int strncmp(const char *s1, const char *s2, int maxlen)
+{
+ int i;
+
+ for (i = 0; i < maxlen; i++) {
+ if (s1[i] != s2[i])
+ return s1[i] - s2[i];
+ }
+
+ return 0;
+}
+
static inline int isspace(int c)
{
switch (c) {
--- /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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __TYPES_H
+#define __TYPES_H
+#include <stdint.h>
+#include <stddef.h>
+#endif
+
projects / coreboot.git / commitdiff