nkeynes@362 | 1 | /**
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nkeynes@561 | 2 | * $Id$
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nkeynes@362 | 3 | *
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nkeynes@362 | 4 | * Wrapper around i386-dis to supply the same behaviour as the other
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nkeynes@362 | 5 | * disassembly functions.
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nkeynes@362 | 6 | *
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nkeynes@362 | 7 | * Copyright (c) 2005 Nathan Keynes.
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nkeynes@362 | 8 | *
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nkeynes@362 | 9 | * This program is free software; you can redistribute it and/or modify
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nkeynes@362 | 10 | * it under the terms of the GNU General Public License as published by
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nkeynes@362 | 11 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@362 | 12 | * (at your option) any later version.
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nkeynes@362 | 13 | *
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nkeynes@362 | 14 | * This program is distributed in the hope that it will be useful,
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nkeynes@362 | 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@362 | 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@362 | 17 | * GNU General Public License for more details.
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nkeynes@362 | 18 | */
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nkeynes@362 | 19 |
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nkeynes@362 | 20 | #include <stdarg.h>
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nkeynes@480 | 21 | #include <string.h>
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nkeynes@362 | 22 | #include "x86dasm.h"
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nkeynes@362 | 23 | #include "bfd.h"
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nkeynes@362 | 24 | #include "dis-asm.h"
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nkeynes@564 | 25 | #include "sh4/sh4.h"
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nkeynes@527 | 26 | #include "sh4/sh4trans.h"
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nkeynes@362 | 27 |
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nkeynes@362 | 28 | extern const struct reg_desc_struct sh4_reg_map[];
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nkeynes@362 | 29 | const struct cpu_desc_struct x86_cpu_desc =
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nkeynes@362 | 30 | { "x86", x86_disasm_instruction, NULL, mem_has_page,
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nkeynes@362 | 31 | NULL, NULL, NULL, 1,
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nkeynes@362 | 32 | (char *)&sh4r, sizeof(sh4r), sh4_reg_map,
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nkeynes@362 | 33 | &sh4r.pc };
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nkeynes@362 | 34 |
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nkeynes@362 | 35 | static int x86_disasm_output( void *data, const char *format, ... );
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nkeynes@429 | 36 | static void x86_print_address( bfd_vma memaddr, struct disassemble_info *info );
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nkeynes@362 | 37 |
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nkeynes@362 | 38 | static struct disassemble_info x86_disasm_info;
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nkeynes@362 | 39 |
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nkeynes@365 | 40 | static x86_symbol *x86_symtab;
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nkeynes@365 | 41 | static int x86_num_symbols = 0;
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nkeynes@365 | 42 |
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nkeynes@515 | 43 |
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nkeynes@515 | 44 | void xlat_disasm_block( FILE *out, void *block )
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nkeynes@515 | 45 | {
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nkeynes@515 | 46 | uint32_t buflen = xlat_get_block_size(block);
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nkeynes@515 | 47 | x86_set_symtab( NULL, 0 );
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nkeynes@515 | 48 | x86_disasm_block( out, block, buflen );
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nkeynes@515 | 49 | }
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nkeynes@515 | 50 |
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nkeynes@376 | 51 | void x86_disasm_block(FILE *out, void *start, uint32_t len)
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nkeynes@376 | 52 | {
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nkeynes@527 | 53 | uintptr_t start_addr = (uintptr_t)start;
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nkeynes@376 | 54 | uint32_t pc;
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nkeynes@376 | 55 | x86_disasm_init( start, start_addr, len );
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nkeynes@376 | 56 | for( pc = start_addr; pc < start_addr + len; ) {
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nkeynes@376 | 57 | char buf[256];
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nkeynes@376 | 58 | char op[256];
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nkeynes@376 | 59 | uint32_t pc2 = x86_disasm_instruction( pc, buf, sizeof(buf), op );
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nkeynes@376 | 60 | fprintf( out, "%08X: %-20s %s\n", pc, op, buf );
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nkeynes@376 | 61 | pc = pc2;
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nkeynes@376 | 62 | }
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nkeynes@376 | 63 | }
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nkeynes@376 | 64 |
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nkeynes@527 | 65 | void x86_disasm_init(unsigned char *buf, uintptr_t vma, int buflen)
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nkeynes@362 | 66 | {
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nkeynes@362 | 67 | init_disassemble_info( &x86_disasm_info, NULL, x86_disasm_output );
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nkeynes@362 | 68 | x86_disasm_info.arch = bfd_arch_i386;
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nkeynes@527 | 69 | #if SH4_TRANSLATOR == TARGET_X86_64
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nkeynes@527 | 70 | x86_disasm_info.mach = bfd_mach_x86_64_intel_syntax;
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nkeynes@527 | 71 | #else
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nkeynes@362 | 72 | x86_disasm_info.mach = bfd_mach_i386_i386_intel_syntax;
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nkeynes@527 | 73 | #endif
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nkeynes@362 | 74 | x86_disasm_info.endian = BFD_ENDIAN_LITTLE;
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nkeynes@362 | 75 | x86_disasm_info.buffer = buf;
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nkeynes@362 | 76 | x86_disasm_info.buffer_vma = vma;
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nkeynes@362 | 77 | x86_disasm_info.buffer_length = buflen;
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nkeynes@365 | 78 | x86_disasm_info.print_address_func = x86_print_address;
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nkeynes@362 | 79 | }
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nkeynes@362 | 80 |
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nkeynes@365 | 81 | void x86_set_symtab( x86_symbol *symtab, int num_symbols )
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nkeynes@365 | 82 | {
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nkeynes@365 | 83 | x86_symtab = symtab;
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nkeynes@365 | 84 | x86_num_symbols = num_symbols;
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nkeynes@365 | 85 | }
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nkeynes@365 | 86 |
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nkeynes@365 | 87 | static const char *x86_find_symbol( bfd_vma memaddr, struct disassemble_info *info )
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nkeynes@365 | 88 | {
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nkeynes@365 | 89 | int i;
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nkeynes@365 | 90 | for( i=0; i<x86_num_symbols; i++ ) {
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nkeynes@527 | 91 | if( x86_symtab[i].ptr == (void *)(uintptr_t)memaddr ) {
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nkeynes@365 | 92 | return x86_symtab[i].name;
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nkeynes@365 | 93 | }
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nkeynes@365 | 94 | }
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nkeynes@365 | 95 | return NULL;
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nkeynes@365 | 96 | }
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nkeynes@365 | 97 |
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nkeynes@429 | 98 | static void x86_print_address( bfd_vma memaddr, struct disassemble_info *info )
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nkeynes@365 | 99 | {
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nkeynes@365 | 100 | const char *sym = x86_find_symbol(memaddr, info);
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nkeynes@365 | 101 | info->fprintf_func( info->stream, "%08X", memaddr );
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nkeynes@365 | 102 | if( sym != NULL ) {
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nkeynes@365 | 103 | info->fprintf_func( info->stream, " <%s>", sym );
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nkeynes@365 | 104 | }
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nkeynes@365 | 105 | }
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nkeynes@362 | 106 |
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nkeynes@527 | 107 | uint32_t x86_disasm_instruction( uintptr_t pc, char *buf, int len, char *opcode )
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nkeynes@362 | 108 | {
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nkeynes@362 | 109 | int count, i;
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nkeynes@362 | 110 |
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nkeynes@362 | 111 | x86_disasm_info.stream = buf;
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nkeynes@362 | 112 | buf[0] = 0;
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nkeynes@362 | 113 | count = print_insn_i386_att( pc, &x86_disasm_info );
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nkeynes@362 | 114 | if( count != 0 ) {
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nkeynes@429 | 115 | unsigned char tmp[count];
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nkeynes@362 | 116 | x86_disasm_info.read_memory_func( pc, tmp, count, &x86_disasm_info );
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nkeynes@362 | 117 | for( i=0; i<count; i++ ) {
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nkeynes@362 | 118 | sprintf( opcode, "%02X ", ((unsigned int)tmp[i])&0xFF );
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nkeynes@362 | 119 | opcode += 3;
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nkeynes@362 | 120 | }
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nkeynes@362 | 121 | *(opcode-1) = '\0';
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nkeynes@362 | 122 | }
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nkeynes@362 | 123 | return pc + count;
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nkeynes@362 | 124 | }
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nkeynes@362 | 125 |
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nkeynes@362 | 126 | int x86_disasm_output( void *data, const char *format, ... )
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nkeynes@362 | 127 | {
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nkeynes@362 | 128 | char *p = (char *)data;
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nkeynes@362 | 129 | va_list ap;
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nkeynes@362 | 130 | int n;
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nkeynes@362 | 131 | p += strlen(p);
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nkeynes@362 | 132 | va_start( ap, format );
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nkeynes@362 | 133 | n = vsprintf( p, format, ap );
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nkeynes@362 | 134 | va_end( ap );
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nkeynes@362 | 135 | return n;
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nkeynes@362 | 136 | }
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