filename | src/x86dasm/x86dasm.c |
changeset | 365:94cab5ad0ed8 |
prev | 362:dc40e2064dc4 |
next | 376:8c7587af5a5d |
author | nkeynes |
date | Tue Sep 11 02:14:46 2007 +0000 (16 years ago) |
permissions | -rw-r--r-- |
last change | Cache the pointer to the last FR bank (speeds fp ops up by about 10%) Implement experimental fix for FLOAT/FTRC Make read/write sr functions non-static (share with translator) Much more translator WIP |
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nkeynes@362 | 1 | /** |
nkeynes@365 | 2 | * $Id: x86dasm.c,v 1.2 2007-09-04 08:32:10 nkeynes Exp $ |
nkeynes@362 | 3 | * |
nkeynes@362 | 4 | * Wrapper around i386-dis to supply the same behaviour as the other |
nkeynes@362 | 5 | * disassembly functions. |
nkeynes@362 | 6 | * |
nkeynes@362 | 7 | * Copyright (c) 2005 Nathan Keynes. |
nkeynes@362 | 8 | * |
nkeynes@362 | 9 | * This program is free software; you can redistribute it and/or modify |
nkeynes@362 | 10 | * it under the terms of the GNU General Public License as published by |
nkeynes@362 | 11 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@362 | 12 | * (at your option) any later version. |
nkeynes@362 | 13 | * |
nkeynes@362 | 14 | * This program is distributed in the hope that it will be useful, |
nkeynes@362 | 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@362 | 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@362 | 17 | * GNU General Public License for more details. |
nkeynes@362 | 18 | */ |
nkeynes@362 | 19 | |
nkeynes@362 | 20 | #include <stdarg.h> |
nkeynes@362 | 21 | #include "x86dasm.h" |
nkeynes@362 | 22 | #include "bfd.h" |
nkeynes@362 | 23 | #include "dis-asm.h" |
nkeynes@362 | 24 | #include "sh4/sh4core.h" |
nkeynes@362 | 25 | |
nkeynes@362 | 26 | extern const struct reg_desc_struct sh4_reg_map[]; |
nkeynes@362 | 27 | const struct cpu_desc_struct x86_cpu_desc = |
nkeynes@362 | 28 | { "x86", x86_disasm_instruction, NULL, mem_has_page, |
nkeynes@362 | 29 | NULL, NULL, NULL, 1, |
nkeynes@362 | 30 | (char *)&sh4r, sizeof(sh4r), sh4_reg_map, |
nkeynes@362 | 31 | &sh4r.pc }; |
nkeynes@362 | 32 | |
nkeynes@362 | 33 | static int x86_disasm_output( void *data, const char *format, ... ); |
nkeynes@362 | 34 | static int x86_read_memory( bfd_vma memaddr, bfd_byte *buffer, unsigned int length, |
nkeynes@362 | 35 | struct disassemble_info *info ); |
nkeynes@362 | 36 | static int x86_print_address( bfd_vma memaddr, struct disassemble_info *info ); |
nkeynes@362 | 37 | |
nkeynes@362 | 38 | static struct disassemble_info x86_disasm_info; |
nkeynes@362 | 39 | |
nkeynes@365 | 40 | static x86_symbol *x86_symtab; |
nkeynes@365 | 41 | static int x86_num_symbols = 0; |
nkeynes@365 | 42 | |
nkeynes@362 | 43 | void x86_disasm_init(char *buf, uint32_t vma, int buflen) |
nkeynes@362 | 44 | { |
nkeynes@362 | 45 | init_disassemble_info( &x86_disasm_info, NULL, x86_disasm_output ); |
nkeynes@362 | 46 | x86_disasm_info.arch = bfd_arch_i386; |
nkeynes@362 | 47 | x86_disasm_info.mach = bfd_mach_i386_i386_intel_syntax; |
nkeynes@362 | 48 | x86_disasm_info.endian = BFD_ENDIAN_LITTLE; |
nkeynes@362 | 49 | x86_disasm_info.buffer = buf; |
nkeynes@362 | 50 | x86_disasm_info.buffer_vma = vma; |
nkeynes@362 | 51 | x86_disasm_info.buffer_length = buflen; |
nkeynes@365 | 52 | x86_disasm_info.print_address_func = x86_print_address; |
nkeynes@362 | 53 | } |
nkeynes@362 | 54 | |
nkeynes@365 | 55 | void x86_set_symtab( x86_symbol *symtab, int num_symbols ) |
nkeynes@365 | 56 | { |
nkeynes@365 | 57 | x86_symtab = symtab; |
nkeynes@365 | 58 | x86_num_symbols = num_symbols; |
nkeynes@365 | 59 | } |
nkeynes@365 | 60 | |
nkeynes@365 | 61 | static const char *x86_find_symbol( bfd_vma memaddr, struct disassemble_info *info ) |
nkeynes@365 | 62 | { |
nkeynes@365 | 63 | int i; |
nkeynes@365 | 64 | for( i=0; i<x86_num_symbols; i++ ) { |
nkeynes@365 | 65 | if( x86_symtab[i].ptr == (void *)memaddr ) { |
nkeynes@365 | 66 | return x86_symtab[i].name; |
nkeynes@365 | 67 | } |
nkeynes@365 | 68 | } |
nkeynes@365 | 69 | return NULL; |
nkeynes@365 | 70 | } |
nkeynes@365 | 71 | |
nkeynes@365 | 72 | static int x86_print_address( bfd_vma memaddr, struct disassemble_info *info ) |
nkeynes@365 | 73 | { |
nkeynes@365 | 74 | const char *sym = x86_find_symbol(memaddr, info); |
nkeynes@365 | 75 | info->fprintf_func( info->stream, "%08X", memaddr ); |
nkeynes@365 | 76 | if( sym != NULL ) { |
nkeynes@365 | 77 | info->fprintf_func( info->stream, " <%s>", sym ); |
nkeynes@365 | 78 | } |
nkeynes@365 | 79 | return 0; |
nkeynes@365 | 80 | } |
nkeynes@362 | 81 | |
nkeynes@362 | 82 | uint32_t x86_disasm_instruction( uint32_t pc, char *buf, int len, char *opcode ) |
nkeynes@362 | 83 | { |
nkeynes@362 | 84 | int count, i; |
nkeynes@362 | 85 | |
nkeynes@362 | 86 | x86_disasm_info.stream = buf; |
nkeynes@362 | 87 | buf[0] = 0; |
nkeynes@362 | 88 | count = print_insn_i386_att( pc, &x86_disasm_info ); |
nkeynes@362 | 89 | if( count != 0 ) { |
nkeynes@362 | 90 | char tmp[count]; |
nkeynes@362 | 91 | x86_disasm_info.read_memory_func( pc, tmp, count, &x86_disasm_info ); |
nkeynes@362 | 92 | for( i=0; i<count; i++ ) { |
nkeynes@362 | 93 | sprintf( opcode, "%02X ", ((unsigned int)tmp[i])&0xFF ); |
nkeynes@362 | 94 | opcode += 3; |
nkeynes@362 | 95 | } |
nkeynes@362 | 96 | *(opcode-1) = '\0'; |
nkeynes@362 | 97 | } |
nkeynes@362 | 98 | return pc + count; |
nkeynes@362 | 99 | } |
nkeynes@362 | 100 | |
nkeynes@362 | 101 | int x86_disasm_output( void *data, const char *format, ... ) |
nkeynes@362 | 102 | { |
nkeynes@362 | 103 | char *p = (char *)data; |
nkeynes@362 | 104 | va_list ap; |
nkeynes@362 | 105 | int n; |
nkeynes@362 | 106 | p += strlen(p); |
nkeynes@362 | 107 | va_start( ap, format ); |
nkeynes@362 | 108 | n = vsprintf( p, format, ap ); |
nkeynes@362 | 109 | va_end( ap ); |
nkeynes@362 | 110 | return n; |
nkeynes@362 | 111 | } |
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