lxdream 0.9.1| filename | src/x86dasm/x86dasm.c |
| changeset | 362:dc40e2064dc4 |
| next | 365:94cab5ad0ed8 |
| author | nkeynes |
| date | Tue Aug 28 08:46:54 2007 +0000 (16 years ago) |
| permissions | -rw-r--r-- |
| last change | Add the i386 disassembler from binutils (why write your own if you don't have to) to use for translator validation |
| view | annotate | diff | log | raw |
1 /**
2 * $Id: x86dasm.c,v 1.1 2007-08-28 08:46:54 nkeynes Exp $
3 *
4 * Wrapper around i386-dis to supply the same behaviour as the other
5 * disassembly functions.
6 *
7 * Copyright (c) 2005 Nathan Keynes.
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 */
20 #include <stdarg.h>
21 #include "x86dasm.h"
22 #include "bfd.h"
23 #include "dis-asm.h"
24 #include "sh4/sh4core.h"
26 extern const struct reg_desc_struct sh4_reg_map[];
27 const struct cpu_desc_struct x86_cpu_desc =
28 { "x86", x86_disasm_instruction, NULL, mem_has_page,
29 NULL, NULL, NULL, 1,
30 (char *)&sh4r, sizeof(sh4r), sh4_reg_map,
31 &sh4r.pc };
33 static int x86_disasm_output( void *data, const char *format, ... );
34 static int x86_read_memory( bfd_vma memaddr, bfd_byte *buffer, unsigned int length,
35 struct disassemble_info *info );
36 static int x86_print_address( bfd_vma memaddr, struct disassemble_info *info );
38 static struct disassemble_info x86_disasm_info;
40 void x86_disasm_init(char *buf, uint32_t vma, int buflen)
41 {
42 init_disassemble_info( &x86_disasm_info, NULL, x86_disasm_output );
43 x86_disasm_info.arch = bfd_arch_i386;
44 x86_disasm_info.mach = bfd_mach_i386_i386_intel_syntax;
45 x86_disasm_info.endian = BFD_ENDIAN_LITTLE;
46 x86_disasm_info.buffer = buf;
47 x86_disasm_info.buffer_vma = vma;
48 x86_disasm_info.buffer_length = buflen;
49 }
52 uint32_t x86_disasm_instruction( uint32_t pc, char *buf, int len, char *opcode )
53 {
54 int count, i;
56 x86_disasm_info.stream = buf;
57 buf[0] = 0;
58 count = print_insn_i386_att( pc, &x86_disasm_info );
59 if( count != 0 ) {
60 char tmp[count];
61 x86_disasm_info.read_memory_func( pc, tmp, count, &x86_disasm_info );
62 for( i=0; i<count; i++ ) {
63 sprintf( opcode, "%02X ", ((unsigned int)tmp[i])&0xFF );
64 opcode += 3;
65 }
66 *(opcode-1) = '\0';
67 }
68 return pc + count;
69 }
71 int x86_disasm_output( void *data, const char *format, ... )
72 {
73 char *p = (char *)data;
74 va_list ap;
75 int n;
76 p += strlen(p);
77 va_start( ap, format );
78 n = vsprintf( p, format, ap );
79 va_end( ap );
80 return n;
81 }
.