disassembler_x86.cc revision 28fa76d17d741238da86dbdb47f721ae97c9eac8
1706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers/* 2706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers * Copyright (C) 2012 The Android Open Source Project 3706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers * 4706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers * Licensed under the Apache License, Version 2.0 (the "License"); 5706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers * you may not use this file except in compliance with the License. 6706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers * You may obtain a copy of the License at 7706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers * 8706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers * http://www.apache.org/licenses/LICENSE-2.0 9706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers * 10706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers * Unless required by applicable law or agreed to in writing, software 11706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers * distributed under the License is distributed on an "AS IS" BASIS, 12706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers * See the License for the specific language governing permissions and 14706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers * limitations under the License. 15706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers */ 16706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 17706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers#include "disassembler_x86.h" 18706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 19706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers#include <iostream> 20706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 210f3c55331439970e01af67f80ac117c473bc04cfElliott Hughes#include "logging.h" 220f3c55331439970e01af67f80ac117c473bc04cfElliott Hughes#include "stringprintf.h" 230f3c55331439970e01af67f80ac117c473bc04cfElliott Hughes 24706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersnamespace art { 25706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersnamespace x86 { 26706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 27706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDisassemblerX86::DisassemblerX86() { 28706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 29706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 30706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersvoid DisassemblerX86::Dump(std::ostream& os, const uint8_t* begin, const uint8_t* end) { 31706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t length = 0; 32706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers for (const uint8_t* cur = begin; cur < end; cur += length) { 33706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers length = DumpInstruction(os, cur); 34706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 35706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 36706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 37706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersstatic const char* gReg8Names[] = { "al", "cl", "dl", "bl", "ah", "ch", "dh", "bh" }; 38706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersstatic const char* gReg16Names[] = { "ax", "cx", "dx", "bx", "sp", "bp", "di", "si" }; 39706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersstatic const char* gReg32Names[] = { "eax", "ecx", "edx", "ebx", "esp", "ebp", "edi", "esi" }; 40706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 41706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersstatic void DumpReg0(std::ostream& os, uint8_t /*rex*/, size_t reg, 42706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool byte_operand, uint8_t size_override) { 43706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DCHECK_LT(reg, 8u); 44706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers // TODO: combine rex into size 45706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t size = byte_operand ? 1 : (size_override == 0x66 ? 2 : 4); 46706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers switch (size) { 47706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 1: os << gReg8Names[reg]; break; 48706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 2: os << gReg16Names[reg]; break; 49706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 4: os << gReg32Names[reg]; break; 50706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers default: LOG(FATAL) << "unexpected size " << size; 51706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 52706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 53706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 54706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersstatic void DumpReg(std::ostream& os, uint8_t rex, uint8_t reg, 55706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool byte_operand, uint8_t size_override) { 56706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t reg_num = reg; // TODO: combine with REX.R on 64bit 57706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpReg0(os, rex, reg_num, byte_operand, size_override); 58706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 59706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 607caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogersstatic void DumpBaseReg(std::ostream& os, uint8_t rex, uint8_t reg) { 61706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t reg_num = reg; // TODO: combine with REX.B on 64bit 627caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers DumpReg0(os, rex, reg_num, false, 0); 63706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 64706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 657caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogersstatic void DumpIndexReg(std::ostream& os, uint8_t rex, uint8_t reg) { 66706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers int reg_num = reg; // TODO: combine with REX.X on 64bit 677caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers DumpReg0(os, rex, reg_num, false, 0); 68706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 69706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 70706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersstatic void DumpSegmentOverride(std::ostream& os, uint8_t segment_prefix) { 71706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers switch (segment_prefix) { 72706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x2E: os << "cs:"; break; 73706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x36: os << "ss:"; break; 74706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x3E: os << "ds:"; break; 75706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x26: os << "es:"; break; 76706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x64: os << "fs:"; break; 77706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x65: os << "gs:"; break; 78706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers default: break; 79706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 80706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 81706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 82706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogerssize_t DisassemblerX86::DumpInstruction(std::ostream& os, const uint8_t* instr) { 83706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers const uint8_t* begin_instr = instr; 84706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool have_prefixes = true; 85706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t prefix[4] = {0, 0, 0, 0}; 86706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers const char** modrm_opcodes = NULL; 87706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers do { 88706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers switch (*instr) { 897caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers // Group 1 - lock and repeat prefixes: 90706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xF0: 91706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xF2: 92706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xF3: 93706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers prefix[0] = *instr; 94706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 95706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers // Group 2 - segment override prefixes: 96706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x2E: 97706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x36: 98706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x3E: 99706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x26: 100706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x64: 101706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x65: 102706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers prefix[1] = *instr; 103706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 104706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers // Group 3 - operand size override: 105706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x66: 106706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers prefix[2] = *instr; 107706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 108706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers // Group 4 - address size override: 109706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x67: 110706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers prefix[3] = *instr; 111706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 112706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers default: 113706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers have_prefixes = false; 114706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 115706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 116706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (have_prefixes) { 117706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 118706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 119706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } while (have_prefixes); 120706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t rex = (*instr >= 0x40 && *instr <= 0x4F) ? *instr : 0; 121706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool has_modrm = false; 122706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool reg_is_opcode = false; 123706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t immediate_bytes = 0; 124706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t branch_bytes = 0; 125706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers std::ostringstream opcode; 126706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool store = false; // stores to memory (ie rm is on the left) 127706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool load = false; // loads from memory (ie rm is on the right) 128706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool byte_operand = false; 129706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool ax = false; // implicit use of ax 130706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool reg_in_opcode = false; // low 3-bits of opcode encode register parameter 131706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers switch (*instr) { 132706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers#define DISASSEMBLER_ENTRY(opname, \ 133706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers rm8_r8, rm32_r32, \ 134706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers r8_rm8, r32_rm32, \ 135706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers ax8_i8, ax32_i32) \ 136706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case rm8_r8: opcode << #opname; store = true; has_modrm = true; byte_operand = true; break; \ 137706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case rm32_r32: opcode << #opname; store = true; has_modrm = true; break; \ 138706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case r8_rm8: opcode << #opname; load = true; has_modrm = true; byte_operand = true; break; \ 139706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case r32_rm32: opcode << #opname; load = true; has_modrm = true; break; \ 140706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case ax8_i8: opcode << #opname; ax = true; immediate_bytes = 1; byte_operand = true; break; \ 141706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case ax32_i32: opcode << #opname; ax = true; immediate_bytes = 4; break; 142706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 143706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(add, 144706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x00 /* RegMem8/Reg8 */, 0x01 /* RegMem32/Reg32 */, 145706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x02 /* Reg8/RegMem8 */, 0x03 /* Reg32/RegMem32 */, 146706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x04 /* Rax8/imm8 opcode */, 0x05 /* Rax32/imm32 */) 147706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(or, 148706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x08 /* RegMem8/Reg8 */, 0x09 /* RegMem32/Reg32 */, 149706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x0A /* Reg8/RegMem8 */, 0x0B /* Reg32/RegMem32 */, 150706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x0C /* Rax8/imm8 opcode */, 0x0D /* Rax32/imm32 */) 151706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(adc, 152706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x10 /* RegMem8/Reg8 */, 0x11 /* RegMem32/Reg32 */, 153706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x12 /* Reg8/RegMem8 */, 0x13 /* Reg32/RegMem32 */, 154706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x14 /* Rax8/imm8 opcode */, 0x15 /* Rax32/imm32 */) 155706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(sbb, 156706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x18 /* RegMem8/Reg8 */, 0x19 /* RegMem32/Reg32 */, 157706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x1A /* Reg8/RegMem8 */, 0x1B /* Reg32/RegMem32 */, 158706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x1C /* Rax8/imm8 opcode */, 0x1D /* Rax32/imm32 */) 159706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(and, 160706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x20 /* RegMem8/Reg8 */, 0x21 /* RegMem32/Reg32 */, 161706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x22 /* Reg8/RegMem8 */, 0x23 /* Reg32/RegMem32 */, 162706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x24 /* Rax8/imm8 opcode */, 0x25 /* Rax32/imm32 */) 163706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(sub, 164706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x28 /* RegMem8/Reg8 */, 0x29 /* RegMem32/Reg32 */, 165706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x2A /* Reg8/RegMem8 */, 0x2B /* Reg32/RegMem32 */, 166706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x2C /* Rax8/imm8 opcode */, 0x2D /* Rax32/imm32 */) 167706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(xor, 168706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x30 /* RegMem8/Reg8 */, 0x31 /* RegMem32/Reg32 */, 169706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x32 /* Reg8/RegMem8 */, 0x33 /* Reg32/RegMem32 */, 170706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x34 /* Rax8/imm8 opcode */, 0x35 /* Rax32/imm32 */) 171706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(cmp, 172706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x38 /* RegMem8/Reg8 */, 0x39 /* RegMem32/Reg32 */, 173706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x3A /* Reg8/RegMem8 */, 0x3B /* Reg32/RegMem32 */, 174706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x3C /* Rax8/imm8 opcode */, 0x3D /* Rax32/imm32 */) 175706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 176706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers#undef DISASSEMBLER_ENTRY 177706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x50: case 0x51: case 0x52: case 0x53: case 0x54: case 0x55: case 0x56: case 0x57: 178706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "push"; 179706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_in_opcode = true; 180706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 181706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x58: case 0x59: case 0x5A: case 0x5B: case 0x5C: case 0x5D: case 0x5E: case 0x5F: 182706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "pop"; 183706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_in_opcode = true; 184706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 185706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x68: opcode << "push"; immediate_bytes = 4; break; 186706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x6A: opcode << "push"; immediate_bytes = 1; break; 187706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x70: case 0x71: case 0x72: case 0x73: case 0x74: case 0x75: case 0x76: case 0x77: 188706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x78: case 0x79: case 0x7A: case 0x7B: case 0x7C: case 0x7D: case 0x7E: case 0x7F: 189706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers static const char* condition_codes[] = 190b25c3f6a86dc634ce44fb2849385b49465caa84dElliott Hughes {"o", "no", "b/nae/c", "nb/ae/nc", "z/eq", "nz/ne", "be/na", "nbe/a", 191b25c3f6a86dc634ce44fb2849385b49465caa84dElliott Hughes "s", "ns", "p/pe", "np/po", "l/nge", "nl/ge", "le/ng", "nle/g" 192706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers }; 193706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "j" << condition_codes[*instr & 0xF]; 194706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers branch_bytes = 1; 195706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 196706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x88: opcode << "mov"; store = true; has_modrm = true; byte_operand = true; break; 197706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x89: opcode << "mov"; store = true; has_modrm = true; break; 198706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x8A: opcode << "mov"; load = true; has_modrm = true; byte_operand = true; break; 199706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x8B: opcode << "mov"; load = true; has_modrm = true; break; 200706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 201706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x0F: // 2 byte extended opcode 202706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 203706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers switch (*instr) { 2047caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0x10: case 0x11: 2057caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers if (prefix[0] == 0xF2) { 2067caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "movsd"; 2077caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers } else if (prefix[0] == 0xF3) { 2087caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "movss"; 2097caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers } else if (prefix[2] == 0x66) { 2107caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "movupd"; 2117caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers } else { 2127caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "movups"; 2137caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers } 2147caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers has_modrm = true; 2157caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers load = *instr == 0x10; 2167caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers store = !load; 2177caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers break; 218706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x38: // 3 byte extended opcode 219706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << StringPrintf("unknown opcode '0F 38 %02X'", *instr); 220706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 221706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x3A: // 3 byte extended opcode 222706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << StringPrintf("unknown opcode '0F 3A %02X'", *instr); 223706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 224706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x80: case 0x81: case 0x82: case 0x83: case 0x84: case 0x85: case 0x86: case 0x87: 225706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x88: case 0x89: case 0x8A: case 0x8B: case 0x8C: case 0x8D: case 0x8E: case 0x8F: 226706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "j" << condition_codes[*instr & 0xF]; 227706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers branch_bytes = 4; 228706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 2297caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0x90: case 0x91: case 0x92: case 0x93: case 0x94: case 0x95: case 0x96: case 0x97: 2307caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0x98: case 0x99: case 0x9A: case 0x9B: case 0x9C: case 0x9D: case 0x9E: case 0x9F: 2317caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "set" << condition_codes[*instr & 0xF]; 2327caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers modrm_opcodes = NULL; 2337caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers reg_is_opcode = true; 2347caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers has_modrm = true; 2357caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers store = true; 2367caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers break; 2377caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0xB6: opcode << "movzxb"; has_modrm = true; load = true; break; 2387caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0xB7: opcode << "movzxw"; has_modrm = true; load = true; break; 239706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers default: 240706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << StringPrintf("unknown opcode '0F %02X'", *instr); 241706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 242706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 243706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 244706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x80: case 0x81: case 0x82: case 0x83: 245706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers static const char* x80_opcodes[] = {"add", "or", "adc", "sbb", "and", "sub", "xor", "cmp"}; 246706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers modrm_opcodes = x80_opcodes; 247706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers has_modrm = true; 248706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_is_opcode = true; 249706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers store = true; 250706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers byte_operand = (*instr & 1) == 0; 251706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers immediate_bytes = *instr == 0x81 ? 4 : 1; 252706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 2537caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0x8D: 2547caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "lea"; 2557caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers has_modrm = true; 2567caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers load = true; 2577caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers break; 258706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xB0: case 0xB1: case 0xB2: case 0xB3: case 0xB4: case 0xB5: case 0xB6: case 0xB7: 259706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "mov"; 260706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers immediate_bytes = 1; 261706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_in_opcode = true; 262706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 263706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xB8: case 0xB9: case 0xBA: case 0xBB: case 0xBC: case 0xBD: case 0xBE: case 0xBF: 264706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "mov"; 265706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers immediate_bytes = 4; 266706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_in_opcode = true; 267706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 2687caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0xC0: case 0xC1: 2697caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers static const char* shift_opcodes[] = 2707caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers {"rol", "ror", "rcl", "rcr", "shl", "shr", "unknown-shift", "sar"}; 2717caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers modrm_opcodes = shift_opcodes; 2727caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers has_modrm = true; 2737caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers reg_is_opcode = true; 2747caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers store = true; 2757caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers immediate_bytes = 1; 2767caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers byte_operand = *instr == 0xC0; 2777caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers break; 278706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xC3: opcode << "ret"; break; 2797caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0xCC: opcode << "int 3"; break; 2807caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0xE8: opcode << "call"; branch_bytes = 4; break; 281706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xE9: opcode << "jmp"; branch_bytes = 4; break; 282706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xEB: opcode << "jmp"; branch_bytes = 1; break; 283706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xFF: 284706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers static const char* ff_opcodes[] = {"inc", "dec", "call", "call", "jmp", "jmp", "push", "unknown-ff"}; 285706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers modrm_opcodes = ff_opcodes; 286706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers has_modrm = true; 287706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_is_opcode = true; 288706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers load = true; 289706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 290706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers default: 291706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << StringPrintf("unknown opcode '%02X'", *instr); 292706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 293706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 294706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers std::ostringstream args; 295706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (reg_in_opcode) { 296706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DCHECK(!has_modrm); 297706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpReg(args, rex, *instr & 0x7, false, prefix[2]); 298706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 299706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 300706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (has_modrm) { 301706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t modrm = *instr; 302706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 303706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t mod = modrm >> 6; 304706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t reg_or_opcode = (modrm >> 3) & 7; 305706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t rm = modrm & 7; 306706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers std::ostringstream address; 307706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (mod == 0 && rm == 5) { // fixed address 308706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << StringPrintf("[0x%X]", *reinterpret_cast<const uint32_t*>(instr)); 309706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr += 4; 310706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else if (rm == 4 && mod != 3) { // SIB 311706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t sib = *instr; 312706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 313706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t ss = (sib >> 6) & 3; 314706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t index = (sib >> 3) & 7; 315706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t base = sib & 7; 316706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << "["; 317706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (base != 5 || mod != 0) { 3187caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers DumpBaseReg(address, rex, base); 319706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (index != 4) { 320706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << " + "; 321706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 322706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 323706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (index != 4) { 3247caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers DumpIndexReg(address, rex, index); 325706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (ss != 0) { 326706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << StringPrintf(" * %d", 1 << ss); 327706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 328706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 329706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (mod == 1) { 330706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << StringPrintf(" + %d", *reinterpret_cast<const int8_t*>(instr)); 331706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 332706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else if (mod == 2) { 333706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << StringPrintf(" + %d", *reinterpret_cast<const int32_t*>(instr)); 334706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr += 4; 335706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 336706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << "]"; 337706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else { 338706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (mod != 3) { 339706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << "["; 340706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 3417caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers DumpBaseReg(address, rex, rm); 342706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (mod == 1) { 343706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << StringPrintf(" + %d", *reinterpret_cast<const int8_t*>(instr)); 344706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 345706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else if (mod == 2) { 346706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << StringPrintf(" + %d", *reinterpret_cast<const int32_t*>(instr)); 347706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr += 4; 348706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 349706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (mod != 3) { 350706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << "]"; 351706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 352706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 353706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 3547caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers if (reg_is_opcode && modrm_opcodes != NULL) { 355706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << modrm_opcodes[reg_or_opcode]; 356706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 357706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (load) { 358706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (!reg_is_opcode) { 359706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpReg(args, rex, reg_or_opcode, byte_operand, prefix[2]); 360706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << ", "; 361706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 362706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpSegmentOverride(args, prefix[1]); 363706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << address.str(); 364706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else { 365706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DCHECK(store); 366706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpSegmentOverride(args, prefix[1]); 367706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << address.str(); 368706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (!reg_is_opcode) { 369706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << ", "; 370706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpReg(args, rex, reg_or_opcode, byte_operand, prefix[2]); 371706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 372706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 373706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 374706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (ax) { 375706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpReg(args, rex, 0 /* EAX */, byte_operand, prefix[2]); 376706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 377706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (immediate_bytes > 0) { 378706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (has_modrm || reg_in_opcode || ax) { 379706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << ", "; 380706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 381706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (immediate_bytes == 1) { 382706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << StringPrintf("%d", *reinterpret_cast<const int8_t*>(instr)); 383706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 384706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else { 385706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers CHECK_EQ(immediate_bytes, 4u); 386706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << StringPrintf("%d", *reinterpret_cast<const int32_t*>(instr)); 387706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr += 4; 388706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 389706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else if (branch_bytes > 0) { 390706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DCHECK(!has_modrm); 391706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers int32_t displacement; 392706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (branch_bytes == 1) { 393706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers displacement = *reinterpret_cast<const int8_t*>(instr); 394706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 395706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else { 396706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers CHECK_EQ(branch_bytes, 4u); 397706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers displacement = *reinterpret_cast<const int32_t*>(instr); 398706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr += 4; 399706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 400706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << StringPrintf("%d (%p)", displacement, instr + displacement); 401706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 40228fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes std::stringstream hex; 403706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers for (size_t i = 0; begin_instr + i < instr; ++i) { 40428fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes hex << StringPrintf("%02X", begin_instr[i]); 405706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 40628fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes os << StringPrintf("\t\t\t%p: %22s \t%-7s ", begin_instr, hex.str().c_str(), opcode.str().c_str()) << args.str() << '\n'; 407706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers return instr - begin_instr; 408706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 409706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 410706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} // namespace x86 411706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} // namespace art 412