disassembler_x86.cc revision 92301d97693ea52f5f6a9bc62d0c7fc611f87c7b
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" 2392301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes#include "thread.h" 240f3c55331439970e01af67f80ac117c473bc04cfElliott Hughes 25706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersnamespace art { 26706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersnamespace x86 { 27706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 28706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDisassemblerX86::DisassemblerX86() { 29706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 30706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 31706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersvoid DisassemblerX86::Dump(std::ostream& os, const uint8_t* begin, const uint8_t* end) { 32706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t length = 0; 33706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers for (const uint8_t* cur = begin; cur < end; cur += length) { 34706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers length = DumpInstruction(os, cur); 35706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 36706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 37706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 38706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersstatic const char* gReg8Names[] = { "al", "cl", "dl", "bl", "ah", "ch", "dh", "bh" }; 39706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersstatic const char* gReg16Names[] = { "ax", "cx", "dx", "bx", "sp", "bp", "di", "si" }; 40706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersstatic const char* gReg32Names[] = { "eax", "ecx", "edx", "ebx", "esp", "ebp", "edi", "esi" }; 41706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 42706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersstatic void DumpReg0(std::ostream& os, uint8_t /*rex*/, size_t reg, 43706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool byte_operand, uint8_t size_override) { 44706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DCHECK_LT(reg, 8u); 45706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers // TODO: combine rex into size 46706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t size = byte_operand ? 1 : (size_override == 0x66 ? 2 : 4); 47706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers switch (size) { 48706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 1: os << gReg8Names[reg]; break; 49706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 2: os << gReg16Names[reg]; break; 50706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 4: os << gReg32Names[reg]; break; 51706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers default: LOG(FATAL) << "unexpected size " << size; 52706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 53706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 54706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 55706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersstatic void DumpReg(std::ostream& os, uint8_t rex, uint8_t reg, 56706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool byte_operand, uint8_t size_override) { 57706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t reg_num = reg; // TODO: combine with REX.R on 64bit 58706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpReg0(os, rex, reg_num, byte_operand, size_override); 59706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 60706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 617caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogersstatic void DumpBaseReg(std::ostream& os, uint8_t rex, uint8_t reg) { 62706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t reg_num = reg; // TODO: combine with REX.B on 64bit 637caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers DumpReg0(os, rex, reg_num, false, 0); 64706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 65706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 667caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogersstatic void DumpIndexReg(std::ostream& os, uint8_t rex, uint8_t reg) { 67706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers int reg_num = reg; // TODO: combine with REX.X on 64bit 687caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers DumpReg0(os, rex, reg_num, false, 0); 69706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 70706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 7192301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughesenum SegmentPrefix { 7292301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes kCs = 0x2e, 7392301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes kSs = 0x36, 7492301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes kDs = 0x3e, 7592301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes kEs = 0x26, 7692301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes kFs = 0x64, 7792301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes kGs = 0x65, 7892301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes}; 7992301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes 80706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersstatic void DumpSegmentOverride(std::ostream& os, uint8_t segment_prefix) { 81706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers switch (segment_prefix) { 8292301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kCs: os << "cs:"; break; 8392301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kSs: os << "ss:"; break; 8492301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kDs: os << "ds:"; break; 8592301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kEs: os << "es:"; break; 8692301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kFs: os << "fs:"; break; 8792301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kGs: os << "gs:"; break; 88706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers default: break; 89706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 90706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 91706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 92706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogerssize_t DisassemblerX86::DumpInstruction(std::ostream& os, const uint8_t* instr) { 93706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers const uint8_t* begin_instr = instr; 94706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool have_prefixes = true; 95706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t prefix[4] = {0, 0, 0, 0}; 96706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers const char** modrm_opcodes = NULL; 97706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers do { 98706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers switch (*instr) { 997caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers // Group 1 - lock and repeat prefixes: 100706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xF0: 101706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xF2: 102706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xF3: 103706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers prefix[0] = *instr; 104706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 105706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers // Group 2 - segment override prefixes: 10692301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kCs: 10792301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kSs: 10892301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kDs: 10992301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kEs: 11092301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kFs: 11192301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kGs: 112706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers prefix[1] = *instr; 113706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 114706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers // Group 3 - operand size override: 115706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x66: 116706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers prefix[2] = *instr; 117706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 118706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers // Group 4 - address size override: 119706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x67: 120706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers prefix[3] = *instr; 121706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 122706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers default: 123706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers have_prefixes = false; 124706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 125706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 126706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (have_prefixes) { 127706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 128706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 129706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } while (have_prefixes); 130706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t rex = (*instr >= 0x40 && *instr <= 0x4F) ? *instr : 0; 131706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool has_modrm = false; 132706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool reg_is_opcode = false; 133706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t immediate_bytes = 0; 134706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t branch_bytes = 0; 135706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers std::ostringstream opcode; 136706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool store = false; // stores to memory (ie rm is on the left) 137706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool load = false; // loads from memory (ie rm is on the right) 138706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool byte_operand = false; 139706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool ax = false; // implicit use of ax 140706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool reg_in_opcode = false; // low 3-bits of opcode encode register parameter 141706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers switch (*instr) { 142706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers#define DISASSEMBLER_ENTRY(opname, \ 143706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers rm8_r8, rm32_r32, \ 144706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers r8_rm8, r32_rm32, \ 145706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers ax8_i8, ax32_i32) \ 146706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case rm8_r8: opcode << #opname; store = true; has_modrm = true; byte_operand = true; break; \ 147706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case rm32_r32: opcode << #opname; store = true; has_modrm = true; break; \ 148706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case r8_rm8: opcode << #opname; load = true; has_modrm = true; byte_operand = true; break; \ 149706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case r32_rm32: opcode << #opname; load = true; has_modrm = true; break; \ 150706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case ax8_i8: opcode << #opname; ax = true; immediate_bytes = 1; byte_operand = true; break; \ 151706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case ax32_i32: opcode << #opname; ax = true; immediate_bytes = 4; break; 152706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 153706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(add, 154706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x00 /* RegMem8/Reg8 */, 0x01 /* RegMem32/Reg32 */, 155706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x02 /* Reg8/RegMem8 */, 0x03 /* Reg32/RegMem32 */, 156706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x04 /* Rax8/imm8 opcode */, 0x05 /* Rax32/imm32 */) 157706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(or, 158706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x08 /* RegMem8/Reg8 */, 0x09 /* RegMem32/Reg32 */, 159706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x0A /* Reg8/RegMem8 */, 0x0B /* Reg32/RegMem32 */, 160706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x0C /* Rax8/imm8 opcode */, 0x0D /* Rax32/imm32 */) 161706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(adc, 162706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x10 /* RegMem8/Reg8 */, 0x11 /* RegMem32/Reg32 */, 163706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x12 /* Reg8/RegMem8 */, 0x13 /* Reg32/RegMem32 */, 164706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x14 /* Rax8/imm8 opcode */, 0x15 /* Rax32/imm32 */) 165706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(sbb, 166706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x18 /* RegMem8/Reg8 */, 0x19 /* RegMem32/Reg32 */, 167706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x1A /* Reg8/RegMem8 */, 0x1B /* Reg32/RegMem32 */, 168706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x1C /* Rax8/imm8 opcode */, 0x1D /* Rax32/imm32 */) 169706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(and, 170706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x20 /* RegMem8/Reg8 */, 0x21 /* RegMem32/Reg32 */, 171706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x22 /* Reg8/RegMem8 */, 0x23 /* Reg32/RegMem32 */, 172706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x24 /* Rax8/imm8 opcode */, 0x25 /* Rax32/imm32 */) 173706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(sub, 174706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x28 /* RegMem8/Reg8 */, 0x29 /* RegMem32/Reg32 */, 175706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x2A /* Reg8/RegMem8 */, 0x2B /* Reg32/RegMem32 */, 176706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x2C /* Rax8/imm8 opcode */, 0x2D /* Rax32/imm32 */) 177706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(xor, 178706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x30 /* RegMem8/Reg8 */, 0x31 /* RegMem32/Reg32 */, 179706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x32 /* Reg8/RegMem8 */, 0x33 /* Reg32/RegMem32 */, 180706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x34 /* Rax8/imm8 opcode */, 0x35 /* Rax32/imm32 */) 181706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(cmp, 182706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x38 /* RegMem8/Reg8 */, 0x39 /* RegMem32/Reg32 */, 183706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x3A /* Reg8/RegMem8 */, 0x3B /* Reg32/RegMem32 */, 184706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x3C /* Rax8/imm8 opcode */, 0x3D /* Rax32/imm32 */) 185706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 186706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers#undef DISASSEMBLER_ENTRY 187706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x50: case 0x51: case 0x52: case 0x53: case 0x54: case 0x55: case 0x56: case 0x57: 188706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "push"; 189706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_in_opcode = true; 190706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 191706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x58: case 0x59: case 0x5A: case 0x5B: case 0x5C: case 0x5D: case 0x5E: case 0x5F: 192706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "pop"; 193706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_in_opcode = true; 194706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 195706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x68: opcode << "push"; immediate_bytes = 4; break; 196706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x6A: opcode << "push"; immediate_bytes = 1; break; 197706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x70: case 0x71: case 0x72: case 0x73: case 0x74: case 0x75: case 0x76: case 0x77: 198706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x78: case 0x79: case 0x7A: case 0x7B: case 0x7C: case 0x7D: case 0x7E: case 0x7F: 199706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers static const char* condition_codes[] = 200b25c3f6a86dc634ce44fb2849385b49465caa84dElliott Hughes {"o", "no", "b/nae/c", "nb/ae/nc", "z/eq", "nz/ne", "be/na", "nbe/a", 201b25c3f6a86dc634ce44fb2849385b49465caa84dElliott Hughes "s", "ns", "p/pe", "np/po", "l/nge", "nl/ge", "le/ng", "nle/g" 202706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers }; 203706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "j" << condition_codes[*instr & 0xF]; 204706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers branch_bytes = 1; 205706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 206706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x88: opcode << "mov"; store = true; has_modrm = true; byte_operand = true; break; 207706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x89: opcode << "mov"; store = true; has_modrm = true; break; 208706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x8A: opcode << "mov"; load = true; has_modrm = true; byte_operand = true; break; 209706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x8B: opcode << "mov"; load = true; has_modrm = true; break; 210706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 211706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x0F: // 2 byte extended opcode 212706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 213706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers switch (*instr) { 2147caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0x10: case 0x11: 2157caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers if (prefix[0] == 0xF2) { 2167caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "movsd"; 2177caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers } else if (prefix[0] == 0xF3) { 2187caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "movss"; 2197caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers } else if (prefix[2] == 0x66) { 2207caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "movupd"; 2217caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers } else { 2227caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "movups"; 2237caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers } 2247caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers has_modrm = true; 2257caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers load = *instr == 0x10; 2267caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers store = !load; 2277caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers break; 228706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x38: // 3 byte extended opcode 229706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << StringPrintf("unknown opcode '0F 38 %02X'", *instr); 230706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 231706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x3A: // 3 byte extended opcode 232706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << StringPrintf("unknown opcode '0F 3A %02X'", *instr); 233706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 234706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x80: case 0x81: case 0x82: case 0x83: case 0x84: case 0x85: case 0x86: case 0x87: 235706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x88: case 0x89: case 0x8A: case 0x8B: case 0x8C: case 0x8D: case 0x8E: case 0x8F: 236706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "j" << condition_codes[*instr & 0xF]; 237706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers branch_bytes = 4; 238706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 2397caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0x90: case 0x91: case 0x92: case 0x93: case 0x94: case 0x95: case 0x96: case 0x97: 2407caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0x98: case 0x99: case 0x9A: case 0x9B: case 0x9C: case 0x9D: case 0x9E: case 0x9F: 2417caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "set" << condition_codes[*instr & 0xF]; 2427caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers modrm_opcodes = NULL; 2437caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers reg_is_opcode = true; 2447caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers has_modrm = true; 2457caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers store = true; 2467caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers break; 2477caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0xB6: opcode << "movzxb"; has_modrm = true; load = true; break; 2487caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0xB7: opcode << "movzxw"; has_modrm = true; load = true; break; 249706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers default: 250706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << StringPrintf("unknown opcode '0F %02X'", *instr); 251706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 252706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 253706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 254706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x80: case 0x81: case 0x82: case 0x83: 255706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers static const char* x80_opcodes[] = {"add", "or", "adc", "sbb", "and", "sub", "xor", "cmp"}; 256706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers modrm_opcodes = x80_opcodes; 257706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers has_modrm = true; 258706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_is_opcode = true; 259706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers store = true; 260706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers byte_operand = (*instr & 1) == 0; 261706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers immediate_bytes = *instr == 0x81 ? 4 : 1; 262706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 2637caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0x8D: 2647caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "lea"; 2657caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers has_modrm = true; 2667caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers load = true; 2677caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers break; 268706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xB0: case 0xB1: case 0xB2: case 0xB3: case 0xB4: case 0xB5: case 0xB6: case 0xB7: 269706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "mov"; 270706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers immediate_bytes = 1; 271706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_in_opcode = true; 272706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 273706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xB8: case 0xB9: case 0xBA: case 0xBB: case 0xBC: case 0xBD: case 0xBE: case 0xBF: 274706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "mov"; 275706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers immediate_bytes = 4; 276706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_in_opcode = true; 277706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 2787caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0xC0: case 0xC1: 2797caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers static const char* shift_opcodes[] = 2807caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers {"rol", "ror", "rcl", "rcr", "shl", "shr", "unknown-shift", "sar"}; 2817caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers modrm_opcodes = shift_opcodes; 2827caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers has_modrm = true; 2837caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers reg_is_opcode = true; 2847caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers store = true; 2857caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers immediate_bytes = 1; 2867caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers byte_operand = *instr == 0xC0; 2877caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers break; 288706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xC3: opcode << "ret"; break; 2890589ca9245849df238812444952c674e01361f2aElliott Hughes case 0xC7: 2900589ca9245849df238812444952c674e01361f2aElliott Hughes static const char* c7_opcodes[] = {"mov", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7"}; 2910589ca9245849df238812444952c674e01361f2aElliott Hughes modrm_opcodes = c7_opcodes; 2920589ca9245849df238812444952c674e01361f2aElliott Hughes store = true; 2930589ca9245849df238812444952c674e01361f2aElliott Hughes immediate_bytes = 4; 2940589ca9245849df238812444952c674e01361f2aElliott Hughes has_modrm = true; 2950589ca9245849df238812444952c674e01361f2aElliott Hughes reg_is_opcode = true; 2960589ca9245849df238812444952c674e01361f2aElliott Hughes break; 2977caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0xCC: opcode << "int 3"; break; 2987caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0xE8: opcode << "call"; branch_bytes = 4; break; 299706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xE9: opcode << "jmp"; branch_bytes = 4; break; 300706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xEB: opcode << "jmp"; branch_bytes = 1; break; 301706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xFF: 302706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers static const char* ff_opcodes[] = {"inc", "dec", "call", "call", "jmp", "jmp", "push", "unknown-ff"}; 303706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers modrm_opcodes = ff_opcodes; 304706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers has_modrm = true; 305706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_is_opcode = true; 306706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers load = true; 307706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 308706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers default: 309706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << StringPrintf("unknown opcode '%02X'", *instr); 310706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 311706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 312706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers std::ostringstream args; 313706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (reg_in_opcode) { 314706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DCHECK(!has_modrm); 315706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpReg(args, rex, *instr & 0x7, false, prefix[2]); 316706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 317706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 31892301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes uint32_t address_bits = 0; 319706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (has_modrm) { 320706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t modrm = *instr; 321706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 322706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t mod = modrm >> 6; 323706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t reg_or_opcode = (modrm >> 3) & 7; 324706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t rm = modrm & 7; 325706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers std::ostringstream address; 326706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (mod == 0 && rm == 5) { // fixed address 32792301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes address_bits = *reinterpret_cast<const uint32_t*>(instr); 32892301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes address << StringPrintf("[0x%x]", address_bits); 329706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr += 4; 330706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else if (rm == 4 && mod != 3) { // SIB 331706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t sib = *instr; 332706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 333706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t ss = (sib >> 6) & 3; 334706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t index = (sib >> 3) & 7; 335706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t base = sib & 7; 336706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << "["; 337706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (base != 5 || mod != 0) { 3387caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers DumpBaseReg(address, rex, base); 339706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (index != 4) { 340706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << " + "; 341706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 342706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 343706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (index != 4) { 3447caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers DumpIndexReg(address, rex, index); 345706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (ss != 0) { 346706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << StringPrintf(" * %d", 1 << ss); 347706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 348706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 349706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (mod == 1) { 350706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << StringPrintf(" + %d", *reinterpret_cast<const int8_t*>(instr)); 351706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 352706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else if (mod == 2) { 353706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << StringPrintf(" + %d", *reinterpret_cast<const int32_t*>(instr)); 354706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr += 4; 355706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 356706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << "]"; 357706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else { 358706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (mod != 3) { 359706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << "["; 360706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 3617caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers DumpBaseReg(address, rex, rm); 362706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (mod == 1) { 363706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << StringPrintf(" + %d", *reinterpret_cast<const int8_t*>(instr)); 364706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 365706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else if (mod == 2) { 366706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << StringPrintf(" + %d", *reinterpret_cast<const int32_t*>(instr)); 367706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr += 4; 368706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 369706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (mod != 3) { 370706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << "]"; 371706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 372706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 373706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 3747caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers if (reg_is_opcode && modrm_opcodes != NULL) { 375706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << modrm_opcodes[reg_or_opcode]; 376706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 377706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (load) { 378706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (!reg_is_opcode) { 379706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpReg(args, rex, reg_or_opcode, byte_operand, prefix[2]); 380706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << ", "; 381706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 382706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpSegmentOverride(args, prefix[1]); 383706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << address.str(); 384706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else { 385706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DCHECK(store); 386706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpSegmentOverride(args, prefix[1]); 387706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << address.str(); 388706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (!reg_is_opcode) { 389706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << ", "; 390706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpReg(args, rex, reg_or_opcode, byte_operand, prefix[2]); 391706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 392706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 393706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 394706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (ax) { 395706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpReg(args, rex, 0 /* EAX */, byte_operand, prefix[2]); 396706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 397706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (immediate_bytes > 0) { 398706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (has_modrm || reg_in_opcode || ax) { 399706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << ", "; 400706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 401706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (immediate_bytes == 1) { 402706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << StringPrintf("%d", *reinterpret_cast<const int8_t*>(instr)); 403706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 404706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else { 405706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers CHECK_EQ(immediate_bytes, 4u); 406706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << StringPrintf("%d", *reinterpret_cast<const int32_t*>(instr)); 407706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr += 4; 408706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 409706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else if (branch_bytes > 0) { 410706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DCHECK(!has_modrm); 411706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers int32_t displacement; 412706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (branch_bytes == 1) { 413706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers displacement = *reinterpret_cast<const int8_t*>(instr); 414706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 415706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else { 416706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers CHECK_EQ(branch_bytes, 4u); 417706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers displacement = *reinterpret_cast<const int32_t*>(instr); 418706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr += 4; 419706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 420706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << StringPrintf("%d (%p)", displacement, instr + displacement); 421706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 42292301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes if (prefix[1] == kFs) { 42392301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes args << " ; "; 42492301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes Thread::DumpThreadOffset(args, address_bits, 4); 42592301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes } 42628fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes std::stringstream hex; 427706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers for (size_t i = 0; begin_instr + i < instr; ++i) { 42828fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes hex << StringPrintf("%02X", begin_instr[i]); 429706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 43028fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes os << StringPrintf("\t\t\t%p: %22s \t%-7s ", begin_instr, hex.str().c_str(), opcode.str().c_str()) << args.str() << '\n'; 431706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers return instr - begin_instr; 432706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 433706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 434706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} // namespace x86 435706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} // namespace art 436