1 /* src/vm/jit/m68k/md.h
3 Copyright (C) 1996-2005, 2006, 2007 R. Grafl, A. Krall, C. Kruegel,
4 C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
5 E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
6 J. Wenninger, Institut f. Computersprachen - TU Wien
8 This file is part of CACAO.
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License as
12 published by the Free Software Foundation; either version 2, or (at
13 your option) any later version.
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
28 #ifndef _VM_JIT_M68K_MD_H
29 #define _VM_JIT_M68K_MD_H
36 #include "vm/jit/codegen-common.hpp"
37 #include "vm/jit/methodtree.h"
41 * Returns the size (in bytes) of the current stackframe, specified by
42 * the passed codeinfo structure.
44 inline static int32_t md_stacktrace_get_framesize(codeinfo* code)
46 // Check for the asm_vm_call_method special case.
50 // On M68K we use 8-byte stackslots.
51 #error Verify the below line, then remove this error!
52 return code->stackframesize * 8;
56 /* md_stacktrace_get_returnaddress *********************************************
58 Returns the return address of the current stackframe, specified by
59 the passed stack pointer and the stack frame size.
61 *******************************************************************************/
63 void *md_stacktrace_get_returnaddress(void *sp, int32_t stackframesize);
66 /* md_codegen_get_pv_from_pc ***************************************************
68 On this architecture just a wrapper function to methodtree_find.
70 *******************************************************************************/
72 inline static void *md_codegen_get_pv_from_pc(void *ra)
76 pv = methodtree_find(ra);
82 /* XXX i can't find a definition of cacheflush in any installed header files but i can find the symbol in libc */
83 /* lets extract the signature from the assembler code*/
85 000e7158 <cacheflush>:
86 e7158: 707b moveq #123,%d0
87 e715a: 2f04 movel %d4,%sp@-
88 e715c: 282f 0014 movel %sp@(20),%d4 arg
89 e7160: 2243 moveal %d3,%a1
90 e7162: 262f 0010 movel %sp@(16),%d3 arg
91 e7166: 2042 moveal %d2,%a0
92 e7168: 242f 000c movel %sp@(12),%d2 arg
93 e716c: 222f 0008 movel %sp@(8),%d1 arg
94 e7170: 4e40 trap #0 traps into system i guess
95 e7172: 2408 movel %a0,%d2
96 e7174: 2609 movel %a1,%d3
97 e7176: 281f movel %sp@+,%d4
98 e7178: 223c ffff f001 movel #-4095,%d1
99 e717e: b081 cmpl %d1,%d0
100 e7180: 6402 bccs e7184 <cacheflush+0x2c>
103 e7186: 2f00 movel %d0,%sp@-
104 e7188: 61ff fff3 82e2 bsrl 1f46c <D_MAX_EXP+0x1ec6d>
105 e718e: 209f movel %sp@+,%a0@
106 e7190: 70ff moveq #-1,%d0
107 e7192: 2040 moveal %d0,%a0
112 /* seems to have 4 arguments */
113 /* best guess: it is this syscall */
114 /* asmlinkage int sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len) */
115 /* kernel 2.6.10 with freescale patches (the one I develop against) needs a patch of */
116 /* arch/m68k/kernel/sys_m68k.c(sys_cacheflush) */
119 void DcacheFlushInvalidateCacheBlock(void *start, unsigned long size);
120 void IcacheInvalidateCacheBlock(void *start, unsigned long size);
123 sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len)
126 DcacheFlushInvalidateCacheBlock(addr, len);
127 IcacheInvalidateCacheBlock(addr, len);
133 extern int cacheflush(unsigned long addr, int scope, int cache, unsigned long len);
135 #include "asm/cachectl.h" /* found more traces of the cacheflush function */
139 /* md_cacheflush ***************************************************************
141 Calls the system's function to flush the instruction and data
144 *******************************************************************************/
146 inline static void md_cacheflush(void *addr, int nbytes)
148 cacheflush((unsigned long)addr, FLUSH_SCOPE_PAGE, FLUSH_CACHE_BOTH, nbytes);
152 /* md_icacheflush **************************************************************
154 Calls the system's function to flush the instruction cache.
156 *******************************************************************************/
158 inline static void md_icacheflush(void *addr, int nbytes)
160 cacheflush((unsigned long)addr, FLUSH_SCOPE_LINE, FLUSH_CACHE_INSN, nbytes);
164 /* md_dcacheflush **************************************************************
166 Calls the system's function to flush the data cache.
168 *******************************************************************************/
170 inline static void md_dcacheflush(void *addr, int nbytes)
172 cacheflush((unsigned long)addr, FLUSH_SCOPE_PAGE, FLUSH_CACHE_DATA, nbytes);
175 #endif /* _VM_JIT_M68K_MD_H */
179 * These are local overrides for various environment variables in Emacs.
180 * Please do not remove this and leave it at the end of the file, where
181 * Emacs will automagically detect them.
182 * ---------------------------------------------------------------------
185 * indent-tabs-mode: t
189 * vim:noexpandtab:sw=4:ts=4: