1/* udis86 - libudis86/udis86.c 2 * 3 * Copyright (c) 2002-2009 Vivek Thampi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without modification, 7 * are permitted provided that the following conditions are met: 8 * 9 * * Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * * Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 19 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 22 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 24 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include "config.h" 28 29#if USE(UDIS86) 30 31#include "udis86_input.h" 32#include "udis86_extern.h" 33 34#ifndef __UD_STANDALONE__ 35# include <stdlib.h> 36# include <string.h> 37#endif /* __UD_STANDALONE__ */ 38 39/* ============================================================================= 40 * ud_init() - Initializes ud_t object. 41 * ============================================================================= 42 */ 43extern void 44ud_init(struct ud* u) 45{ 46 memset((void*)u, 0, sizeof(struct ud)); 47 ud_set_mode(u, 16); 48 u->mnemonic = UD_Iinvalid; 49 ud_set_pc(u, 0); 50#ifndef __UD_STANDALONE__ 51 ud_set_input_file(u, stdin); 52#endif /* __UD_STANDALONE__ */ 53} 54 55/* ============================================================================= 56 * ud_disassemble() - disassembles one instruction and returns the number of 57 * bytes disassembled. A zero means end of disassembly. 58 * ============================================================================= 59 */ 60extern unsigned int 61ud_disassemble(struct ud* u) 62{ 63 if (ud_input_end(u)) 64 return 0; 65 66 67 u->insn_buffer[0] = u->insn_hexcode[0] = 0; 68 69 70 if (ud_decode(u) == 0) 71 return 0; 72 if (u->translator) 73 u->translator(u); 74 return ud_insn_len(u); 75} 76 77/* ============================================================================= 78 * ud_set_mode() - Set Disassemly Mode. 79 * ============================================================================= 80 */ 81extern void 82ud_set_mode(struct ud* u, uint8_t m) 83{ 84 switch(m) { 85 case 16: 86 case 32: 87 case 64: u->dis_mode = m ; return; 88 default: u->dis_mode = 16; return; 89 } 90} 91 92/* ============================================================================= 93 * ud_set_vendor() - Set vendor. 94 * ============================================================================= 95 */ 96extern void 97ud_set_vendor(struct ud* u, unsigned v) 98{ 99 switch(v) { 100 case UD_VENDOR_INTEL: 101 u->vendor = v; 102 break; 103 case UD_VENDOR_ANY: 104 u->vendor = v; 105 break; 106 default: 107 u->vendor = UD_VENDOR_AMD; 108 } 109} 110 111/* ============================================================================= 112 * ud_set_pc() - Sets code origin. 113 * ============================================================================= 114 */ 115extern void 116ud_set_pc(struct ud* u, uint64_t o) 117{ 118 u->pc = o; 119} 120 121/* ============================================================================= 122 * ud_set_syntax() - Sets the output syntax. 123 * ============================================================================= 124 */ 125extern void 126ud_set_syntax(struct ud* u, void (*t)(struct ud*)) 127{ 128 u->translator = t; 129} 130 131/* ============================================================================= 132 * ud_insn() - returns the disassembled instruction 133 * ============================================================================= 134 */ 135extern char* 136ud_insn_asm(struct ud* u) 137{ 138 return u->insn_buffer; 139} 140 141/* ============================================================================= 142 * ud_insn_offset() - Returns the offset. 143 * ============================================================================= 144 */ 145extern uint64_t 146ud_insn_off(struct ud* u) 147{ 148 return u->insn_offset; 149} 150 151 152/* ============================================================================= 153 * ud_insn_hex() - Returns hex form of disassembled instruction. 154 * ============================================================================= 155 */ 156extern char* 157ud_insn_hex(struct ud* u) 158{ 159 return u->insn_hexcode; 160} 161 162/* ============================================================================= 163 * ud_insn_ptr() - Returns code disassembled. 164 * ============================================================================= 165 */ 166extern uint8_t* 167ud_insn_ptr(struct ud* u) 168{ 169 return u->inp_sess; 170} 171 172/* ============================================================================= 173 * ud_insn_len() - Returns the count of bytes disassembled. 174 * ============================================================================= 175 */ 176extern unsigned int 177ud_insn_len(struct ud* u) 178{ 179 return u->inp_ctr; 180} 181 182#endif // USE(UDIS86) 183