disassembler_x86.cc revision 16b5c294c37460b51dc1f5296000cc80bbd33419
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 55bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogersenum RegFile { GPR, MMX, SSE }; 56bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers 57706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersstatic void DumpReg(std::ostream& os, uint8_t rex, uint8_t reg, 58bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers bool byte_operand, uint8_t size_override, RegFile reg_file) { 59706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t reg_num = reg; // TODO: combine with REX.R on 64bit 60bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers if (reg_file == GPR) { 61bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers DumpReg0(os, rex, reg_num, byte_operand, size_override); 62bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else if (reg_file == SSE) { 63bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers os << "xmm" << reg_num; 64bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else { 65bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers os << "mm" << reg_num; 66bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } 67706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 68706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 697caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogersstatic void DumpBaseReg(std::ostream& os, uint8_t rex, uint8_t reg) { 70706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t reg_num = reg; // TODO: combine with REX.B on 64bit 717caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers DumpReg0(os, rex, reg_num, false, 0); 72706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 73706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 747caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogersstatic void DumpIndexReg(std::ostream& os, uint8_t rex, uint8_t reg) { 75706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers int reg_num = reg; // TODO: combine with REX.X on 64bit 767caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers DumpReg0(os, rex, reg_num, false, 0); 77706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 78706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 7992301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughesenum SegmentPrefix { 8092301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes kCs = 0x2e, 8192301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes kSs = 0x36, 8292301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes kDs = 0x3e, 8392301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes kEs = 0x26, 8492301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes kFs = 0x64, 8592301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes kGs = 0x65, 8692301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes}; 8792301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes 88706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogersstatic void DumpSegmentOverride(std::ostream& os, uint8_t segment_prefix) { 89706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers switch (segment_prefix) { 9092301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kCs: os << "cs:"; break; 9192301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kSs: os << "ss:"; break; 9292301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kDs: os << "ds:"; break; 9392301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kEs: os << "es:"; break; 9492301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kFs: os << "fs:"; break; 9592301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kGs: os << "gs:"; break; 96706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers default: break; 97706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 98706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 99706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 100706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogerssize_t DisassemblerX86::DumpInstruction(std::ostream& os, const uint8_t* instr) { 101706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers const uint8_t* begin_instr = instr; 102706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool have_prefixes = true; 103706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t prefix[4] = {0, 0, 0, 0}; 104706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers const char** modrm_opcodes = NULL; 105706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers do { 106706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers switch (*instr) { 1077caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers // Group 1 - lock and repeat prefixes: 108706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xF0: 109706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xF2: 110706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xF3: 111706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers prefix[0] = *instr; 112706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 113706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers // Group 2 - segment override prefixes: 11492301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kCs: 11592301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kSs: 11692301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kDs: 11792301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kEs: 11892301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kFs: 11992301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes case kGs: 120706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers prefix[1] = *instr; 121706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 122706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers // Group 3 - operand size override: 123706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x66: 124706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers prefix[2] = *instr; 125706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 126706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers // Group 4 - address size override: 127706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x67: 128706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers prefix[3] = *instr; 129706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 130706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers default: 131706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers have_prefixes = false; 132706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 133706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 134706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (have_prefixes) { 135706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 136706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 137706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } while (have_prefixes); 138706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t rex = (*instr >= 0x40 && *instr <= 0x4F) ? *instr : 0; 139706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool has_modrm = false; 140706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool reg_is_opcode = false; 141706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t immediate_bytes = 0; 142706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers size_t branch_bytes = 0; 143706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers std::ostringstream opcode; 144706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool store = false; // stores to memory (ie rm is on the left) 145706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool load = false; // loads from memory (ie rm is on the right) 146706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool byte_operand = false; 147706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool ax = false; // implicit use of ax 148706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers bool reg_in_opcode = false; // low 3-bits of opcode encode register parameter 149bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers RegFile src_reg_file = GPR; 150bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers RegFile dst_reg_file = GPR; 151706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers switch (*instr) { 152706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers#define DISASSEMBLER_ENTRY(opname, \ 153706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers rm8_r8, rm32_r32, \ 154706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers r8_rm8, r32_rm32, \ 155706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers ax8_i8, ax32_i32) \ 156706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case rm8_r8: opcode << #opname; store = true; has_modrm = true; byte_operand = true; break; \ 157706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case rm32_r32: opcode << #opname; store = true; has_modrm = true; break; \ 158706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case r8_rm8: opcode << #opname; load = true; has_modrm = true; byte_operand = true; break; \ 159706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case r32_rm32: opcode << #opname; load = true; has_modrm = true; break; \ 160706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case ax8_i8: opcode << #opname; ax = true; immediate_bytes = 1; byte_operand = true; break; \ 161706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case ax32_i32: opcode << #opname; ax = true; immediate_bytes = 4; break; 162706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 163706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(add, 164706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x00 /* RegMem8/Reg8 */, 0x01 /* RegMem32/Reg32 */, 165706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x02 /* Reg8/RegMem8 */, 0x03 /* Reg32/RegMem32 */, 166706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x04 /* Rax8/imm8 opcode */, 0x05 /* Rax32/imm32 */) 167706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(or, 168706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x08 /* RegMem8/Reg8 */, 0x09 /* RegMem32/Reg32 */, 169706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x0A /* Reg8/RegMem8 */, 0x0B /* Reg32/RegMem32 */, 170706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x0C /* Rax8/imm8 opcode */, 0x0D /* Rax32/imm32 */) 171706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(adc, 172706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x10 /* RegMem8/Reg8 */, 0x11 /* RegMem32/Reg32 */, 173706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x12 /* Reg8/RegMem8 */, 0x13 /* Reg32/RegMem32 */, 174706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x14 /* Rax8/imm8 opcode */, 0x15 /* Rax32/imm32 */) 175706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(sbb, 176706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x18 /* RegMem8/Reg8 */, 0x19 /* RegMem32/Reg32 */, 177706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x1A /* Reg8/RegMem8 */, 0x1B /* Reg32/RegMem32 */, 178706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x1C /* Rax8/imm8 opcode */, 0x1D /* Rax32/imm32 */) 179706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(and, 180706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x20 /* RegMem8/Reg8 */, 0x21 /* RegMem32/Reg32 */, 181706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x22 /* Reg8/RegMem8 */, 0x23 /* Reg32/RegMem32 */, 182706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x24 /* Rax8/imm8 opcode */, 0x25 /* Rax32/imm32 */) 183706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(sub, 184706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x28 /* RegMem8/Reg8 */, 0x29 /* RegMem32/Reg32 */, 185706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x2A /* Reg8/RegMem8 */, 0x2B /* Reg32/RegMem32 */, 186706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x2C /* Rax8/imm8 opcode */, 0x2D /* Rax32/imm32 */) 187706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(xor, 188706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x30 /* RegMem8/Reg8 */, 0x31 /* RegMem32/Reg32 */, 189706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x32 /* Reg8/RegMem8 */, 0x33 /* Reg32/RegMem32 */, 190706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x34 /* Rax8/imm8 opcode */, 0x35 /* Rax32/imm32 */) 191706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan RogersDISASSEMBLER_ENTRY(cmp, 192706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x38 /* RegMem8/Reg8 */, 0x39 /* RegMem32/Reg32 */, 193706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x3A /* Reg8/RegMem8 */, 0x3B /* Reg32/RegMem32 */, 194706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 0x3C /* Rax8/imm8 opcode */, 0x3D /* Rax32/imm32 */) 195706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 196706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers#undef DISASSEMBLER_ENTRY 197706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x50: case 0x51: case 0x52: case 0x53: case 0x54: case 0x55: case 0x56: case 0x57: 198706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "push"; 199706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_in_opcode = true; 200706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 201706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x58: case 0x59: case 0x5A: case 0x5B: case 0x5C: case 0x5D: case 0x5E: case 0x5F: 202706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "pop"; 203706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_in_opcode = true; 204706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 205706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x68: opcode << "push"; immediate_bytes = 4; break; 206706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x6A: opcode << "push"; immediate_bytes = 1; break; 207706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x70: case 0x71: case 0x72: case 0x73: case 0x74: case 0x75: case 0x76: case 0x77: 208706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x78: case 0x79: case 0x7A: case 0x7B: case 0x7C: case 0x7D: case 0x7E: case 0x7F: 209706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers static const char* condition_codes[] = 210b25c3f6a86dc634ce44fb2849385b49465caa84dElliott Hughes {"o", "no", "b/nae/c", "nb/ae/nc", "z/eq", "nz/ne", "be/na", "nbe/a", 211b25c3f6a86dc634ce44fb2849385b49465caa84dElliott Hughes "s", "ns", "p/pe", "np/po", "l/nge", "nl/ge", "le/ng", "nle/g" 212706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers }; 213706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "j" << condition_codes[*instr & 0xF]; 214706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers branch_bytes = 1; 215706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 216706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x88: opcode << "mov"; store = true; has_modrm = true; byte_operand = true; break; 217706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x89: opcode << "mov"; store = true; has_modrm = true; break; 218706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x8A: opcode << "mov"; load = true; has_modrm = true; byte_operand = true; break; 219706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x8B: opcode << "mov"; load = true; has_modrm = true; break; 220706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 221706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x0F: // 2 byte extended opcode 222706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 223706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers switch (*instr) { 2247caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0x10: case 0x11: 2257caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers if (prefix[0] == 0xF2) { 2267caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "movsd"; 2277caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers } else if (prefix[0] == 0xF3) { 2287caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "movss"; 2297caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers } else if (prefix[2] == 0x66) { 2307caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "movupd"; 2317caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers } else { 2327caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "movups"; 2337caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers } 2347caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers has_modrm = true; 235bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers src_reg_file = dst_reg_file = SSE; 2367caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers load = *instr == 0x10; 2377caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers store = !load; 2387caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers break; 239706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x38: // 3 byte extended opcode 240706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << StringPrintf("unknown opcode '0F 38 %02X'", *instr); 241706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 242706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x3A: // 3 byte extended opcode 243706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << StringPrintf("unknown opcode '0F 3A %02X'", *instr); 244706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 245bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x50: case 0x51: case 0x52: case 0x53: case 0x54: case 0x55: case 0x56: case 0x57: 246bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x58: case 0x59: case 0x5C: case 0x5D: case 0x5E: case 0x5F: { 247bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers switch (*instr) { 248bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x50: opcode << "movmsk"; break; 249bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x51: opcode << "sqrt"; break; 250bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x52: opcode << "rsqrt"; break; 251bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x53: opcode << "rcp"; break; 252bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x54: opcode << "and"; break; 253bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x55: opcode << "andn"; break; 254bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x56: opcode << "or"; break; 255bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x57: opcode << "xor"; break; 256bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x58: opcode << "add"; break; 257bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x59: opcode << "mul"; break; 258bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x5C: opcode << "sub"; break; 259bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x5D: opcode << "min"; break; 260bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x5E: opcode << "div"; break; 261bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x5F: opcode << "max"; break; 262bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers default: LOG(FATAL) << "Unreachable"; 263bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } 264bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers if (prefix[2] == 0x66) { 265bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "pd"; 266bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers prefix[2] = 0; // clear prefix now its served its purpose as part of the opcode 267bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else if (prefix[0] == 0xF2) { 268bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "sd"; 269bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers prefix[0] = 0; // clear prefix now its served its purpose as part of the opcode 270bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else if (prefix[0] == 0xF3) { 271bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "ss"; 272bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers prefix[0] = 0; // clear prefix now its served its purpose as part of the opcode 273bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else { 274bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "ps"; 275bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } 276bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers load = true; 277bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers has_modrm = true; 278bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers src_reg_file = dst_reg_file = SSE; 279bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers break; 280bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } 281bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x5A: 282bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers if (prefix[2] == 0x66) { 283bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "cvtpd2ps"; 284bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers prefix[2] = 0; // clear prefix now its served its purpose as part of the opcode 285bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else if (prefix[0] == 0xF2) { 286bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "cvtsd2ss"; 287bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers prefix[0] = 0; // clear prefix now its served its purpose as part of the opcode 288bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else if (prefix[0] == 0xF3) { 289bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "cvtss2sd"; 290bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers prefix[0] = 0; // clear prefix now its served its purpose as part of the opcode 291bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else { 292bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "cvtps2pd"; 293bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } 294bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers load = true; 295bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers has_modrm = true; 296bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers src_reg_file = dst_reg_file = SSE; 297bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers break; 298bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x5B: 299bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers if (prefix[2] == 0x66) { 300bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "cvtps2dq"; 301bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers prefix[2] = 0; // clear prefix now its served its purpose as part of the opcode 302bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else if (prefix[0] == 0xF2) { 303bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "bad opcode F2 0F 5B"; 304bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else if (prefix[0] == 0xF3) { 305bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "cvttps2dq"; 306bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers prefix[0] = 0; // clear prefix now its served its purpose as part of the opcode 307bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else { 308bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "cvtdq2ps"; 309bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } 310bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers load = true; 311bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers has_modrm = true; 312bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers src_reg_file = dst_reg_file = SSE; 313bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers break; 314bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x6E: 315bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers if (prefix[2] == 0x66) { 316bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers dst_reg_file = SSE; 317bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "movq"; 318bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers prefix[2] = 0; // clear prefix now its served its purpose as part of the opcode 319bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else { 320bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers dst_reg_file = MMX; 321bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "movd"; 322bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } 323bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers load = true; 324bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers has_modrm = true; 325bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers break; 326bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers case 0x6F: 327bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers if (prefix[2] == 0x66) { 328bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers dst_reg_file = SSE; 329bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "movdqa"; 330bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else if (prefix[0] == 0xF3) { 331bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers dst_reg_file = SSE; 332bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "movdqu"; 333bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers prefix[0] = 0; // clear prefix now its served its purpose as part of the opcode 334bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else { 335bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers dst_reg_file = MMX; 336bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers opcode << "movq"; 337bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } 338bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers load = true; 339bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers has_modrm = true; 340bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers break; 341706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x80: case 0x81: case 0x82: case 0x83: case 0x84: case 0x85: case 0x86: case 0x87: 342706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x88: case 0x89: case 0x8A: case 0x8B: case 0x8C: case 0x8D: case 0x8E: case 0x8F: 343706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "j" << condition_codes[*instr & 0xF]; 344706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers branch_bytes = 4; 345706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 3467caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0x90: case 0x91: case 0x92: case 0x93: case 0x94: case 0x95: case 0x96: case 0x97: 3477caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0x98: case 0x99: case 0x9A: case 0x9B: case 0x9C: case 0x9D: case 0x9E: case 0x9F: 3487caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "set" << condition_codes[*instr & 0xF]; 3497caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers modrm_opcodes = NULL; 3507caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers reg_is_opcode = true; 3517caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers has_modrm = true; 3527caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers store = true; 3537caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers break; 3547caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0xB6: opcode << "movzxb"; has_modrm = true; load = true; break; 3557caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0xB7: opcode << "movzxw"; has_modrm = true; load = true; break; 356706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers default: 357706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << StringPrintf("unknown opcode '0F %02X'", *instr); 358706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 359706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 360706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 361706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0x80: case 0x81: case 0x82: case 0x83: 362706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers static const char* x80_opcodes[] = {"add", "or", "adc", "sbb", "and", "sub", "xor", "cmp"}; 363706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers modrm_opcodes = x80_opcodes; 364706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers has_modrm = true; 365706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_is_opcode = true; 366706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers store = true; 367706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers byte_operand = (*instr & 1) == 0; 368706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers immediate_bytes = *instr == 0x81 ? 4 : 1; 369706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 3707caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0x8D: 3717caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers opcode << "lea"; 3727caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers has_modrm = true; 3737caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers load = true; 3747caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers break; 375706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xB0: case 0xB1: case 0xB2: case 0xB3: case 0xB4: case 0xB5: case 0xB6: case 0xB7: 376706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "mov"; 377706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers immediate_bytes = 1; 378706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_in_opcode = true; 379706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 380706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xB8: case 0xB9: case 0xBA: case 0xBB: case 0xBC: case 0xBD: case 0xBE: case 0xBF: 381706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << "mov"; 382706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers immediate_bytes = 4; 383706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_in_opcode = true; 384706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 3857caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0xC0: case 0xC1: 38616b5c294c37460b51dc1f5296000cc80bbd33419Elliott Hughes case 0xD0: case 0xD1: 3877caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers static const char* shift_opcodes[] = 3887caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers {"rol", "ror", "rcl", "rcr", "shl", "shr", "unknown-shift", "sar"}; 3897caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers modrm_opcodes = shift_opcodes; 3907caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers has_modrm = true; 3917caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers reg_is_opcode = true; 3927caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers store = true; 39316b5c294c37460b51dc1f5296000cc80bbd33419Elliott Hughes immediate_bytes = ((*instr & 0xf0) == 0xc0) ? 1 : 0; 3947caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers byte_operand = *instr == 0xC0; 3957caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers break; 396706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xC3: opcode << "ret"; break; 3970589ca9245849df238812444952c674e01361f2aElliott Hughes case 0xC7: 3980589ca9245849df238812444952c674e01361f2aElliott Hughes static const char* c7_opcodes[] = {"mov", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7"}; 3990589ca9245849df238812444952c674e01361f2aElliott Hughes modrm_opcodes = c7_opcodes; 4000589ca9245849df238812444952c674e01361f2aElliott Hughes store = true; 4010589ca9245849df238812444952c674e01361f2aElliott Hughes immediate_bytes = 4; 4020589ca9245849df238812444952c674e01361f2aElliott Hughes has_modrm = true; 4030589ca9245849df238812444952c674e01361f2aElliott Hughes reg_is_opcode = true; 4040589ca9245849df238812444952c674e01361f2aElliott Hughes break; 4057caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0xCC: opcode << "int 3"; break; 4067caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers case 0xE8: opcode << "call"; branch_bytes = 4; break; 407706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xE9: opcode << "jmp"; branch_bytes = 4; break; 408706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xEB: opcode << "jmp"; branch_bytes = 1; break; 409706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers case 0xFF: 410706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers static const char* ff_opcodes[] = {"inc", "dec", "call", "call", "jmp", "jmp", "push", "unknown-ff"}; 411706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers modrm_opcodes = ff_opcodes; 412706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers has_modrm = true; 413706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers reg_is_opcode = true; 414706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers load = true; 415706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 416706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers default: 417706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << StringPrintf("unknown opcode '%02X'", *instr); 418706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers break; 419706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 420706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers std::ostringstream args; 421706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (reg_in_opcode) { 422706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DCHECK(!has_modrm); 423bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers DumpReg(args, rex, *instr & 0x7, false, prefix[2], GPR); 424706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 425706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 42692301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes uint32_t address_bits = 0; 427706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (has_modrm) { 428706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t modrm = *instr; 429706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 430706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t mod = modrm >> 6; 431706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t reg_or_opcode = (modrm >> 3) & 7; 432706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t rm = modrm & 7; 433706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers std::ostringstream address; 434706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (mod == 0 && rm == 5) { // fixed address 43592301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes address_bits = *reinterpret_cast<const uint32_t*>(instr); 43692301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes address << StringPrintf("[0x%x]", address_bits); 437706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr += 4; 438706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else if (rm == 4 && mod != 3) { // SIB 439706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t sib = *instr; 440706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 441706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t ss = (sib >> 6) & 3; 442706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t index = (sib >> 3) & 7; 443706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers uint8_t base = sib & 7; 444706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << "["; 445706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (base != 5 || mod != 0) { 4467caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers DumpBaseReg(address, rex, base); 447706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (index != 4) { 448706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << " + "; 449706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 450706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 451706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (index != 4) { 4527caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers DumpIndexReg(address, rex, index); 453706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (ss != 0) { 454706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << StringPrintf(" * %d", 1 << ss); 455706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 456706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 457706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (mod == 1) { 458706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << StringPrintf(" + %d", *reinterpret_cast<const int8_t*>(instr)); 459706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 460706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else if (mod == 2) { 461706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << StringPrintf(" + %d", *reinterpret_cast<const int32_t*>(instr)); 462706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr += 4; 463706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 464706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << "]"; 465706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else { 466bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers if (mod == 3) { 467bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers DumpReg(address, rex, rm, byte_operand, prefix[2], load ? src_reg_file : dst_reg_file); 468bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else { 469706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << "["; 470bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers DumpBaseReg(address, rex, rm); 471bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers if (mod == 1) { 472bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers address << StringPrintf(" + %d", *reinterpret_cast<const int8_t*>(instr)); 473bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers instr++; 474bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } else if (mod == 2) { 475bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers address << StringPrintf(" + %d", *reinterpret_cast<const int32_t*>(instr)); 476bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers instr += 4; 477bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers } 478706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers address << "]"; 479706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 480706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 481706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 4827caad77632ae121c9f64c488e3f8f710e2c4813dIan Rogers if (reg_is_opcode && modrm_opcodes != NULL) { 483706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers opcode << modrm_opcodes[reg_or_opcode]; 484706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 485706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (load) { 486706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (!reg_is_opcode) { 487bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers DumpReg(args, rex, reg_or_opcode, byte_operand, prefix[2], dst_reg_file); 488706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << ", "; 489706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 490706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpSegmentOverride(args, prefix[1]); 491706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << address.str(); 492706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else { 493706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DCHECK(store); 494706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DumpSegmentOverride(args, prefix[1]); 495706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << address.str(); 496706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (!reg_is_opcode) { 497706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << ", "; 498bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers DumpReg(args, rex, reg_or_opcode, byte_operand, prefix[2], src_reg_file); 499706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 500706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 501706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 502706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (ax) { 503bf989802bfcd0a0e1d27feb6b67b19cccb7b31e8Ian Rogers DumpReg(args, rex, 0 /* EAX */, byte_operand, prefix[2], GPR); 504706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 505706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (immediate_bytes > 0) { 506706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (has_modrm || reg_in_opcode || ax) { 507706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << ", "; 508706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 509706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (immediate_bytes == 1) { 510706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << StringPrintf("%d", *reinterpret_cast<const int8_t*>(instr)); 511706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 512706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else { 513706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers CHECK_EQ(immediate_bytes, 4u); 514706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers args << StringPrintf("%d", *reinterpret_cast<const int32_t*>(instr)); 515706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr += 4; 516706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 517706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else if (branch_bytes > 0) { 518706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers DCHECK(!has_modrm); 519706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers int32_t displacement; 520706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers if (branch_bytes == 1) { 521706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers displacement = *reinterpret_cast<const int8_t*>(instr); 522706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr++; 523706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } else { 524706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers CHECK_EQ(branch_bytes, 4u); 525706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers displacement = *reinterpret_cast<const int32_t*>(instr); 526706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers instr += 4; 527706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 52814178a99fd397737124e65d5ccb9446f85c5ca93Elliott Hughes args << StringPrintf("%+d (%p)", displacement, instr + displacement); 529706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 53092301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes if (prefix[1] == kFs) { 53192301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes args << " ; "; 53292301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes Thread::DumpThreadOffset(args, address_bits, 4); 53392301d97693ea52f5f6a9bc62d0c7fc611f87c7bElliott Hughes } 53428fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes std::stringstream hex; 535706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers for (size_t i = 0; begin_instr + i < instr; ++i) { 53628fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes hex << StringPrintf("%02X", begin_instr[i]); 537706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers } 53828fa76d17d741238da86dbdb47f721ae97c9eac8Elliott Hughes os << StringPrintf("\t\t\t%p: %22s \t%-7s ", begin_instr, hex.str().c_str(), opcode.str().c_str()) << args.str() << '\n'; 539706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers return instr - begin_instr; 540706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} 541706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers 542706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} // namespace x86 543706a10ea53a32455c6b3ffc5e5e0e1f6f191ec2aIan Rogers} // namespace art 544