filename | src/x86dasm/x86dasm.c |
changeset | 939:6f2302afeb89 |
prev | 925:7cbcc51db63d |
next | 968:6fb1481859a4 |
author | nkeynes |
date | Sat Jan 03 03:30:26 2009 +0000 (15 years ago) |
branch | lxdream-mem |
permissions | -rw-r--r-- |
last change | MMU work-in-progress * Move SDRAM out into separate sdram.c * Move all page-table management into mmu.c * Convert UTLB management to use the new page-tables * Rip out all calls to mmu_vma_to_phys_* and replace with direct access |
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1 /**
2 * $Id$
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 <string.h>
22 #include "x86dasm/x86dasm.h"
23 #include "x86dasm/bfd.h"
24 #include "x86dasm/dis-asm.h"
25 #include "sh4/sh4.h"
26 #include "sh4/sh4trans.h"
28 const struct cpu_desc_struct x86_cpu_desc =
29 { "x86", (disasm_func_t)x86_disasm_instruction, NULL, mem_has_page,
30 NULL, NULL, NULL, 1,
31 NULL, 0, NULL,
32 &sh4r.pc };
34 static int x86_disasm_output( void *data, const char *format, ... );
35 static void x86_print_address( bfd_vma memaddr, struct disassemble_info *info );
37 static struct disassemble_info x86_disasm_info;
39 static x86_symbol *x86_symtab;
40 static int x86_num_symbols = 0;
43 void xlat_disasm_block( FILE *out, void *block )
44 {
45 uint32_t buflen = xlat_get_code_size(block);
46 x86_set_symtab( NULL, 0 );
47 x86_disasm_block( out, block, buflen );
48 }
50 void x86_disasm_block(FILE *out, void *start, uint32_t len)
51 {
52 uintptr_t start_addr = (uintptr_t)start;
53 uintptr_t pc;
54 x86_disasm_init( start, start_addr, len );
55 for( pc = start_addr; pc < start_addr + len; ) {
56 char buf[256];
57 char op[256];
58 uintptr_t pc2 = x86_disasm_instruction( pc, buf, sizeof(buf), op );
59 fprintf( out, "%08X: %-20s %s\n", pc, op, buf );
60 pc = pc2;
61 }
62 }
64 void x86_disasm_init(unsigned char *buf, uintptr_t vma, int buflen)
65 {
66 init_disassemble_info( &x86_disasm_info, NULL, x86_disasm_output );
67 x86_disasm_info.arch = bfd_arch_i386;
68 #if SIZEOF_VOID_P == 8
69 x86_disasm_info.mach = bfd_mach_x86_64_intel_syntax;
70 #else
71 x86_disasm_info.mach = bfd_mach_i386_i386_intel_syntax;
72 #endif
73 x86_disasm_info.endian = BFD_ENDIAN_LITTLE;
74 x86_disasm_info.buffer = buf;
75 x86_disasm_info.buffer_vma = vma;
76 x86_disasm_info.buffer_length = buflen;
77 x86_disasm_info.print_address_func = x86_print_address;
78 }
80 void x86_set_symtab( x86_symbol *symtab, int num_symbols )
81 {
82 x86_symtab = symtab;
83 x86_num_symbols = num_symbols;
84 }
86 static const char *x86_find_symbol( bfd_vma memaddr, struct disassemble_info *info )
87 {
88 int i;
89 for( i=0; i<x86_num_symbols; i++ ) {
90 if( x86_symtab[i].ptr == (void *)(uintptr_t)memaddr ) {
91 return x86_symtab[i].name;
92 }
93 }
94 return NULL;
95 }
97 static void x86_print_address( bfd_vma memaddr, struct disassemble_info *info )
98 {
99 const char *sym = x86_find_symbol(memaddr, info);
100 info->fprintf_func( info->stream, "%08X", memaddr );
101 if( sym != NULL ) {
102 info->fprintf_func( info->stream, " <%s>", sym );
103 }
104 }
106 void x86_print_symbolic_operand( char *buf, int hex, unsigned int disp )
107 {
108 const char *sym = x86_find_symbol(disp, NULL);
109 if( sym != NULL ) {
110 snprintf( buf, 50, "<%s>", sym );
111 } else if( hex ) {
112 sprintf( buf, "0x%x", disp );
113 } else {
114 sprintf( buf, "%d", (int)disp );
115 }
116 }
118 uintptr_t x86_disasm_instruction( uintptr_t pc, char *buf, int len, char *opcode )
119 {
120 int count, i;
122 x86_disasm_info.stream = buf;
123 buf[0] = 0;
124 count = print_insn_i386_att( pc, &x86_disasm_info );
125 if( count != 0 ) {
126 unsigned char tmp[count];
127 x86_disasm_info.read_memory_func( pc, tmp, count, &x86_disasm_info );
128 for( i=0; i<count; i++ ) {
129 sprintf( opcode, "%02X ", ((unsigned int)tmp[i])&0xFF );
130 opcode += 3;
131 }
132 *(opcode-1) = '\0';
133 }
134 return pc + count;
135 }
137 int x86_disasm_output( void *data, const char *format, ... )
138 {
139 char *p = (char *)data;
140 va_list ap;
141 int n;
142 p += strlen(p);
143 va_start( ap, format );
144 n = vsprintf( p, format, ap );
145 va_end( ap );
146 return n;
147 }
.