Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "disassembler_x86.h" |
| 18 | |
Ian Rogers | cf7f191 | 2014-10-22 22:06:39 -0700 | [diff] [blame] | 19 | #include <inttypes.h> |
| 20 | |
| 21 | #include <ostream> |
Ian Rogers | c7dd295 | 2014-10-21 23:31:19 -0700 | [diff] [blame] | 22 | #include <sstream> |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 23 | |
Elliott Hughes | 07ed66b | 2012-12-12 18:34:25 -0800 | [diff] [blame] | 24 | #include "base/logging.h" |
Elliott Hughes | e222ee0 | 2012-12-13 14:41:43 -0800 | [diff] [blame] | 25 | #include "base/stringprintf.h" |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 26 | #include "thread.h" |
Elliott Hughes | 0f3c553 | 2012-03-30 14:51:51 -0700 | [diff] [blame] | 27 | |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 28 | namespace art { |
| 29 | namespace x86 { |
| 30 | |
Ian Rogers | b23a772 | 2012-10-09 16:54:26 -0700 | [diff] [blame] | 31 | size_t DisassemblerX86::Dump(std::ostream& os, const uint8_t* begin) { |
| 32 | return DumpInstruction(os, begin); |
| 33 | } |
| 34 | |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 35 | void DisassemblerX86::Dump(std::ostream& os, const uint8_t* begin, const uint8_t* end) { |
| 36 | size_t length = 0; |
| 37 | for (const uint8_t* cur = begin; cur < end; cur += length) { |
| 38 | length = DumpInstruction(os, cur); |
| 39 | } |
| 40 | } |
| 41 | |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 42 | static const char* gReg8Names[] = { |
| 43 | "al", "cl", "dl", "bl", "ah", "ch", "dh", "bh" |
| 44 | }; |
| 45 | static const char* gExtReg8Names[] = { |
| 46 | "al", "cl", "dl", "bl", "spl", "bpl", "sil", "dil", |
| 47 | "r8l", "r9l", "r10l", "r11l", "r12l", "r13l", "r14l", "r15l" |
| 48 | }; |
| 49 | static const char* gReg16Names[] = { |
| 50 | "ax", "cx", "dx", "bx", "sp", "bp", "si", "di", |
| 51 | "r8w", "r9w", "r10w", "r11w", "r12w", "r13w", "r14w", "r15w" |
| 52 | }; |
| 53 | static const char* gReg32Names[] = { |
| 54 | "eax", "ecx", "edx", "ebx", "esp", "ebp", "esi", "edi", |
| 55 | "r8d", "r9d", "r10d", "r11d", "r12d", "r13d", "r14d", "r15d" |
| 56 | }; |
Ian Rogers | 38e1203 | 2014-03-14 14:06:14 -0700 | [diff] [blame] | 57 | static const char* gReg64Names[] = { |
| 58 | "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi", |
| 59 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15" |
| 60 | }; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 61 | |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 62 | // 64-bit opcode REX modifier. |
Andreas Gampe | c8ccf68 | 2014-09-29 20:07:43 -0700 | [diff] [blame] | 63 | constexpr uint8_t REX_W = 8U /* 0b1000 */; |
| 64 | constexpr uint8_t REX_R = 4U /* 0b0100 */; |
| 65 | constexpr uint8_t REX_X = 2U /* 0b0010 */; |
| 66 | constexpr uint8_t REX_B = 1U /* 0b0001 */; |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 67 | |
Ian Rogers | 38e1203 | 2014-03-14 14:06:14 -0700 | [diff] [blame] | 68 | static void DumpReg0(std::ostream& os, uint8_t rex, size_t reg, |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 69 | bool byte_operand, uint8_t size_override) { |
Ian Rogers | 38e1203 | 2014-03-14 14:06:14 -0700 | [diff] [blame] | 70 | DCHECK_LT(reg, (rex == 0) ? 8u : 16u); |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 71 | bool rex_w = (rex & REX_W) != 0; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 72 | if (byte_operand) { |
| 73 | os << ((rex == 0) ? gReg8Names[reg] : gExtReg8Names[reg]); |
| 74 | } else if (rex_w) { |
| 75 | os << gReg64Names[reg]; |
| 76 | } else if (size_override == 0x66) { |
| 77 | os << gReg16Names[reg]; |
| 78 | } else { |
| 79 | os << gReg32Names[reg]; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 80 | } |
| 81 | } |
| 82 | |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 83 | enum RegFile { GPR, MMX, SSE }; |
| 84 | |
Mark Mendell | 88649c7 | 2014-06-04 21:20:00 -0400 | [diff] [blame] | 85 | static void DumpAnyReg(std::ostream& os, uint8_t rex, size_t reg, |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 86 | bool byte_operand, uint8_t size_override, RegFile reg_file) { |
| 87 | if (reg_file == GPR) { |
| 88 | DumpReg0(os, rex, reg, byte_operand, size_override); |
| 89 | } else if (reg_file == SSE) { |
| 90 | os << "xmm" << reg; |
| 91 | } else { |
| 92 | os << "mm" << reg; |
| 93 | } |
| 94 | } |
| 95 | |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 96 | static void DumpReg(std::ostream& os, uint8_t rex, uint8_t reg, |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 97 | bool byte_operand, uint8_t size_override, RegFile reg_file) { |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 98 | bool rex_r = (rex & REX_R) != 0; |
Ian Rogers | 38e1203 | 2014-03-14 14:06:14 -0700 | [diff] [blame] | 99 | size_t reg_num = rex_r ? (reg + 8) : reg; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 100 | DumpAnyReg(os, rex, reg_num, byte_operand, size_override, reg_file); |
| 101 | } |
| 102 | |
| 103 | static void DumpRmReg(std::ostream& os, uint8_t rex, uint8_t reg, |
| 104 | bool byte_operand, uint8_t size_override, RegFile reg_file) { |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 105 | bool rex_b = (rex & REX_B) != 0; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 106 | size_t reg_num = rex_b ? (reg + 8) : reg; |
| 107 | DumpAnyReg(os, rex, reg_num, byte_operand, size_override, reg_file); |
| 108 | } |
| 109 | |
| 110 | static void DumpAddrReg(std::ostream& os, uint8_t rex, uint8_t reg) { |
| 111 | if (rex != 0) { |
| 112 | os << gReg64Names[reg]; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 113 | } else { |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 114 | os << gReg32Names[reg]; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 115 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 116 | } |
| 117 | |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 118 | static void DumpBaseReg(std::ostream& os, uint8_t rex, uint8_t reg) { |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 119 | bool rex_b = (rex & REX_B) != 0; |
Ian Rogers | 38e1203 | 2014-03-14 14:06:14 -0700 | [diff] [blame] | 120 | size_t reg_num = rex_b ? (reg + 8) : reg; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 121 | DumpAddrReg(os, rex, reg_num); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 122 | } |
| 123 | |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 124 | static void DumpIndexReg(std::ostream& os, uint8_t rex, uint8_t reg) { |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 125 | bool rex_x = (rex & REX_X) != 0; |
Ian Rogers | 38e1203 | 2014-03-14 14:06:14 -0700 | [diff] [blame] | 126 | uint8_t reg_num = rex_x ? (reg + 8) : reg; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 127 | DumpAddrReg(os, rex, reg_num); |
| 128 | } |
| 129 | |
Vladimir Kostyukov | 79bb184 | 2014-07-01 18:28:43 +0700 | [diff] [blame] | 130 | static void DumpOpcodeReg(std::ostream& os, uint8_t rex, uint8_t reg, |
| 131 | bool byte_operand, uint8_t size_override) { |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 132 | bool rex_b = (rex & REX_B) != 0; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 133 | size_t reg_num = rex_b ? (reg + 8) : reg; |
Vladimir Kostyukov | 79bb184 | 2014-07-01 18:28:43 +0700 | [diff] [blame] | 134 | DumpReg0(os, rex, reg_num, byte_operand, size_override); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 135 | } |
| 136 | |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 137 | enum SegmentPrefix { |
| 138 | kCs = 0x2e, |
| 139 | kSs = 0x36, |
| 140 | kDs = 0x3e, |
| 141 | kEs = 0x26, |
| 142 | kFs = 0x64, |
| 143 | kGs = 0x65, |
| 144 | }; |
| 145 | |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 146 | static void DumpSegmentOverride(std::ostream& os, uint8_t segment_prefix) { |
| 147 | switch (segment_prefix) { |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 148 | case kCs: os << "cs:"; break; |
| 149 | case kSs: os << "ss:"; break; |
| 150 | case kDs: os << "ds:"; break; |
| 151 | case kEs: os << "es:"; break; |
| 152 | case kFs: os << "fs:"; break; |
| 153 | case kGs: os << "gs:"; break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 154 | default: break; |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | size_t DisassemblerX86::DumpInstruction(std::ostream& os, const uint8_t* instr) { |
| 159 | const uint8_t* begin_instr = instr; |
| 160 | bool have_prefixes = true; |
| 161 | uint8_t prefix[4] = {0, 0, 0, 0}; |
| 162 | const char** modrm_opcodes = NULL; |
| 163 | do { |
| 164 | switch (*instr) { |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 165 | // Group 1 - lock and repeat prefixes: |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 166 | case 0xF0: |
| 167 | case 0xF2: |
| 168 | case 0xF3: |
| 169 | prefix[0] = *instr; |
| 170 | break; |
| 171 | // Group 2 - segment override prefixes: |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 172 | case kCs: |
| 173 | case kSs: |
| 174 | case kDs: |
| 175 | case kEs: |
| 176 | case kFs: |
| 177 | case kGs: |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 178 | prefix[1] = *instr; |
| 179 | break; |
| 180 | // Group 3 - operand size override: |
| 181 | case 0x66: |
| 182 | prefix[2] = *instr; |
| 183 | break; |
| 184 | // Group 4 - address size override: |
| 185 | case 0x67: |
| 186 | prefix[3] = *instr; |
| 187 | break; |
| 188 | default: |
| 189 | have_prefixes = false; |
| 190 | break; |
| 191 | } |
| 192 | if (have_prefixes) { |
| 193 | instr++; |
| 194 | } |
| 195 | } while (have_prefixes); |
Ian Rogers | 38e1203 | 2014-03-14 14:06:14 -0700 | [diff] [blame] | 196 | uint8_t rex = (supports_rex_ && (*instr >= 0x40) && (*instr <= 0x4F)) ? *instr : 0; |
Vladimir Kostyukov | e8861b3 | 2014-04-18 17:06:15 +0700 | [diff] [blame] | 197 | if (rex != 0) { |
| 198 | instr++; |
| 199 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 200 | bool has_modrm = false; |
| 201 | bool reg_is_opcode = false; |
| 202 | size_t immediate_bytes = 0; |
| 203 | size_t branch_bytes = 0; |
| 204 | std::ostringstream opcode; |
| 205 | bool store = false; // stores to memory (ie rm is on the left) |
| 206 | bool load = false; // loads from memory (ie rm is on the right) |
Serguei Katkov | 94f3eb0 | 2014-06-24 13:23:17 +0700 | [diff] [blame] | 207 | bool byte_operand = false; // true when the opcode is dealing with byte operands |
| 208 | bool byte_second_operand = false; // true when the source operand is a byte register but the target register isn't (ie movsxb/movzxb). |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 209 | bool target_specific = false; // register name depends on target (64 vs 32 bits). |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 210 | bool ax = false; // implicit use of ax |
jeffhao | e296248 | 2012-06-28 11:29:57 -0700 | [diff] [blame] | 211 | bool cx = false; // implicit use of cx |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 212 | bool reg_in_opcode = false; // low 3-bits of opcode encode register parameter |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 213 | bool no_ops = false; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 214 | RegFile src_reg_file = GPR; |
| 215 | RegFile dst_reg_file = GPR; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 216 | switch (*instr) { |
| 217 | #define DISASSEMBLER_ENTRY(opname, \ |
| 218 | rm8_r8, rm32_r32, \ |
| 219 | r8_rm8, r32_rm32, \ |
| 220 | ax8_i8, ax32_i32) \ |
| 221 | case rm8_r8: opcode << #opname; store = true; has_modrm = true; byte_operand = true; break; \ |
| 222 | case rm32_r32: opcode << #opname; store = true; has_modrm = true; break; \ |
| 223 | case r8_rm8: opcode << #opname; load = true; has_modrm = true; byte_operand = true; break; \ |
| 224 | case r32_rm32: opcode << #opname; load = true; has_modrm = true; break; \ |
| 225 | case ax8_i8: opcode << #opname; ax = true; immediate_bytes = 1; byte_operand = true; break; \ |
| 226 | case ax32_i32: opcode << #opname; ax = true; immediate_bytes = 4; break; |
| 227 | |
| 228 | DISASSEMBLER_ENTRY(add, |
| 229 | 0x00 /* RegMem8/Reg8 */, 0x01 /* RegMem32/Reg32 */, |
| 230 | 0x02 /* Reg8/RegMem8 */, 0x03 /* Reg32/RegMem32 */, |
| 231 | 0x04 /* Rax8/imm8 opcode */, 0x05 /* Rax32/imm32 */) |
| 232 | DISASSEMBLER_ENTRY(or, |
| 233 | 0x08 /* RegMem8/Reg8 */, 0x09 /* RegMem32/Reg32 */, |
| 234 | 0x0A /* Reg8/RegMem8 */, 0x0B /* Reg32/RegMem32 */, |
| 235 | 0x0C /* Rax8/imm8 opcode */, 0x0D /* Rax32/imm32 */) |
| 236 | DISASSEMBLER_ENTRY(adc, |
| 237 | 0x10 /* RegMem8/Reg8 */, 0x11 /* RegMem32/Reg32 */, |
| 238 | 0x12 /* Reg8/RegMem8 */, 0x13 /* Reg32/RegMem32 */, |
| 239 | 0x14 /* Rax8/imm8 opcode */, 0x15 /* Rax32/imm32 */) |
| 240 | DISASSEMBLER_ENTRY(sbb, |
| 241 | 0x18 /* RegMem8/Reg8 */, 0x19 /* RegMem32/Reg32 */, |
| 242 | 0x1A /* Reg8/RegMem8 */, 0x1B /* Reg32/RegMem32 */, |
| 243 | 0x1C /* Rax8/imm8 opcode */, 0x1D /* Rax32/imm32 */) |
| 244 | DISASSEMBLER_ENTRY(and, |
| 245 | 0x20 /* RegMem8/Reg8 */, 0x21 /* RegMem32/Reg32 */, |
| 246 | 0x22 /* Reg8/RegMem8 */, 0x23 /* Reg32/RegMem32 */, |
| 247 | 0x24 /* Rax8/imm8 opcode */, 0x25 /* Rax32/imm32 */) |
| 248 | DISASSEMBLER_ENTRY(sub, |
| 249 | 0x28 /* RegMem8/Reg8 */, 0x29 /* RegMem32/Reg32 */, |
| 250 | 0x2A /* Reg8/RegMem8 */, 0x2B /* Reg32/RegMem32 */, |
| 251 | 0x2C /* Rax8/imm8 opcode */, 0x2D /* Rax32/imm32 */) |
| 252 | DISASSEMBLER_ENTRY(xor, |
| 253 | 0x30 /* RegMem8/Reg8 */, 0x31 /* RegMem32/Reg32 */, |
| 254 | 0x32 /* Reg8/RegMem8 */, 0x33 /* Reg32/RegMem32 */, |
| 255 | 0x34 /* Rax8/imm8 opcode */, 0x35 /* Rax32/imm32 */) |
| 256 | DISASSEMBLER_ENTRY(cmp, |
| 257 | 0x38 /* RegMem8/Reg8 */, 0x39 /* RegMem32/Reg32 */, |
| 258 | 0x3A /* Reg8/RegMem8 */, 0x3B /* Reg32/RegMem32 */, |
| 259 | 0x3C /* Rax8/imm8 opcode */, 0x3D /* Rax32/imm32 */) |
| 260 | |
| 261 | #undef DISASSEMBLER_ENTRY |
| 262 | case 0x50: case 0x51: case 0x52: case 0x53: case 0x54: case 0x55: case 0x56: case 0x57: |
| 263 | opcode << "push"; |
| 264 | reg_in_opcode = true; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 265 | target_specific = true; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 266 | break; |
| 267 | case 0x58: case 0x59: case 0x5A: case 0x5B: case 0x5C: case 0x5D: case 0x5E: case 0x5F: |
| 268 | opcode << "pop"; |
| 269 | reg_in_opcode = true; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 270 | target_specific = true; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 271 | break; |
Mark Mendell | 33ecf8d | 2014-06-06 15:19:45 -0400 | [diff] [blame] | 272 | case 0x63: |
Vladimir Kostyukov | ec95f72 | 2014-07-23 12:10:07 +0700 | [diff] [blame] | 273 | if ((rex & REX_W) != 0) { |
Mark Mendell | 33ecf8d | 2014-06-06 15:19:45 -0400 | [diff] [blame] | 274 | opcode << "movsxd"; |
| 275 | has_modrm = true; |
| 276 | load = true; |
| 277 | } else { |
| 278 | // In 32-bit mode (!supports_rex_) this is ARPL, with no REX prefix the functionality is the |
| 279 | // same as 'mov' but the use of the instruction is discouraged. |
| 280 | opcode << StringPrintf("unknown opcode '%02X'", *instr); |
| 281 | } |
| 282 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 283 | case 0x68: opcode << "push"; immediate_bytes = 4; break; |
Mark Mendell | d19b55a | 2013-12-12 09:55:34 -0800 | [diff] [blame] | 284 | case 0x69: opcode << "imul"; load = true; has_modrm = true; immediate_bytes = 4; break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 285 | case 0x6A: opcode << "push"; immediate_bytes = 1; break; |
Mark Mendell | d19b55a | 2013-12-12 09:55:34 -0800 | [diff] [blame] | 286 | case 0x6B: opcode << "imul"; load = true; has_modrm = true; immediate_bytes = 1; break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 287 | case 0x70: case 0x71: case 0x72: case 0x73: case 0x74: case 0x75: case 0x76: case 0x77: |
| 288 | case 0x78: case 0x79: case 0x7A: case 0x7B: case 0x7C: case 0x7D: case 0x7E: case 0x7F: |
| 289 | static const char* condition_codes[] = |
Elliott Hughes | b25c3f6 | 2012-03-26 16:35:06 -0700 | [diff] [blame] | 290 | {"o", "no", "b/nae/c", "nb/ae/nc", "z/eq", "nz/ne", "be/na", "nbe/a", |
| 291 | "s", "ns", "p/pe", "np/po", "l/nge", "nl/ge", "le/ng", "nle/g" |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 292 | }; |
| 293 | opcode << "j" << condition_codes[*instr & 0xF]; |
| 294 | branch_bytes = 1; |
| 295 | break; |
Razvan A Lupusoru | 99ad723 | 2014-02-25 17:41:08 -0800 | [diff] [blame] | 296 | case 0x86: case 0x87: |
| 297 | opcode << "xchg"; |
| 298 | store = true; |
| 299 | has_modrm = true; |
| 300 | byte_operand = (*instr == 0x86); |
| 301 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 302 | case 0x88: opcode << "mov"; store = true; has_modrm = true; byte_operand = true; break; |
| 303 | case 0x89: opcode << "mov"; store = true; has_modrm = true; break; |
| 304 | case 0x8A: opcode << "mov"; load = true; has_modrm = true; byte_operand = true; break; |
| 305 | case 0x8B: opcode << "mov"; load = true; has_modrm = true; break; |
| 306 | |
| 307 | case 0x0F: // 2 byte extended opcode |
| 308 | instr++; |
| 309 | switch (*instr) { |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 310 | case 0x10: case 0x11: |
| 311 | if (prefix[0] == 0xF2) { |
| 312 | opcode << "movsd"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 313 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 314 | } else if (prefix[0] == 0xF3) { |
| 315 | opcode << "movss"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 316 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 317 | } else if (prefix[2] == 0x66) { |
| 318 | opcode << "movupd"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 319 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 320 | } else { |
| 321 | opcode << "movups"; |
| 322 | } |
| 323 | has_modrm = true; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 324 | src_reg_file = dst_reg_file = SSE; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 325 | load = *instr == 0x10; |
| 326 | store = !load; |
| 327 | break; |
Razvan A Lupusoru | 2c498d1 | 2014-01-29 16:02:57 -0800 | [diff] [blame] | 328 | case 0x12: case 0x13: |
| 329 | if (prefix[2] == 0x66) { |
| 330 | opcode << "movlpd"; |
| 331 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 332 | } else if (prefix[0] == 0) { |
| 333 | opcode << "movlps"; |
| 334 | } |
| 335 | has_modrm = true; |
| 336 | src_reg_file = dst_reg_file = SSE; |
| 337 | load = *instr == 0x12; |
| 338 | store = !load; |
| 339 | break; |
| 340 | case 0x16: case 0x17: |
| 341 | if (prefix[2] == 0x66) { |
| 342 | opcode << "movhpd"; |
| 343 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 344 | } else if (prefix[0] == 0) { |
| 345 | opcode << "movhps"; |
| 346 | } |
| 347 | has_modrm = true; |
| 348 | src_reg_file = dst_reg_file = SSE; |
| 349 | load = *instr == 0x16; |
| 350 | store = !load; |
| 351 | break; |
| 352 | case 0x28: case 0x29: |
| 353 | if (prefix[2] == 0x66) { |
| 354 | opcode << "movapd"; |
| 355 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 356 | } else if (prefix[0] == 0) { |
| 357 | opcode << "movaps"; |
| 358 | } |
| 359 | has_modrm = true; |
| 360 | src_reg_file = dst_reg_file = SSE; |
| 361 | load = *instr == 0x28; |
| 362 | store = !load; |
| 363 | break; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 364 | case 0x2A: |
| 365 | if (prefix[2] == 0x66) { |
| 366 | opcode << "cvtpi2pd"; |
| 367 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 368 | } else if (prefix[0] == 0xF2) { |
| 369 | opcode << "cvtsi2sd"; |
| 370 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 371 | } else if (prefix[0] == 0xF3) { |
| 372 | opcode << "cvtsi2ss"; |
| 373 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 374 | } else { |
| 375 | opcode << "cvtpi2ps"; |
| 376 | } |
| 377 | load = true; |
| 378 | has_modrm = true; |
| 379 | dst_reg_file = SSE; |
| 380 | break; |
| 381 | case 0x2C: |
| 382 | if (prefix[2] == 0x66) { |
| 383 | opcode << "cvttpd2pi"; |
| 384 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 385 | } else if (prefix[0] == 0xF2) { |
| 386 | opcode << "cvttsd2si"; |
| 387 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 388 | } else if (prefix[0] == 0xF3) { |
| 389 | opcode << "cvttss2si"; |
| 390 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 391 | } else { |
| 392 | opcode << "cvttps2pi"; |
| 393 | } |
| 394 | load = true; |
| 395 | has_modrm = true; |
| 396 | src_reg_file = SSE; |
| 397 | break; |
| 398 | case 0x2D: |
| 399 | if (prefix[2] == 0x66) { |
| 400 | opcode << "cvtpd2pi"; |
| 401 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 402 | } else if (prefix[0] == 0xF2) { |
| 403 | opcode << "cvtsd2si"; |
| 404 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 405 | } else if (prefix[0] == 0xF3) { |
| 406 | opcode << "cvtss2si"; |
| 407 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 408 | } else { |
| 409 | opcode << "cvtps2pi"; |
| 410 | } |
| 411 | load = true; |
| 412 | has_modrm = true; |
| 413 | src_reg_file = SSE; |
| 414 | break; |
| 415 | case 0x2E: |
| 416 | opcode << "u"; |
Ian Rogers | fc787ec | 2014-10-09 21:56:44 -0700 | [diff] [blame] | 417 | FALLTHROUGH_INTENDED; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 418 | case 0x2F: |
| 419 | if (prefix[2] == 0x66) { |
| 420 | opcode << "comisd"; |
| 421 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 422 | } else { |
| 423 | opcode << "comiss"; |
| 424 | } |
| 425 | has_modrm = true; |
| 426 | load = true; |
| 427 | src_reg_file = dst_reg_file = SSE; |
| 428 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 429 | case 0x38: // 3 byte extended opcode |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 430 | instr++; |
| 431 | if (prefix[2] == 0x66) { |
| 432 | switch (*instr) { |
Udayan Banerji | 60bfe7b | 2014-07-08 19:59:43 -0700 | [diff] [blame] | 433 | case 0x01: |
| 434 | opcode << "phaddw"; |
| 435 | prefix[2] = 0; |
| 436 | has_modrm = true; |
| 437 | load = true; |
| 438 | src_reg_file = dst_reg_file = SSE; |
| 439 | break; |
| 440 | case 0x02: |
| 441 | opcode << "phaddd"; |
| 442 | prefix[2] = 0; |
| 443 | has_modrm = true; |
| 444 | load = true; |
| 445 | src_reg_file = dst_reg_file = SSE; |
| 446 | break; |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 447 | case 0x40: |
| 448 | opcode << "pmulld"; |
| 449 | prefix[2] = 0; |
| 450 | has_modrm = true; |
| 451 | load = true; |
| 452 | src_reg_file = dst_reg_file = SSE; |
| 453 | break; |
| 454 | default: |
| 455 | opcode << StringPrintf("unknown opcode '0F 38 %02X'", *instr); |
| 456 | } |
| 457 | } else { |
| 458 | opcode << StringPrintf("unknown opcode '0F 38 %02X'", *instr); |
| 459 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 460 | break; |
| 461 | case 0x3A: // 3 byte extended opcode |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 462 | instr++; |
| 463 | if (prefix[2] == 0x66) { |
| 464 | switch (*instr) { |
| 465 | case 0x14: |
| 466 | opcode << "pextrb"; |
| 467 | prefix[2] = 0; |
| 468 | has_modrm = true; |
| 469 | store = true; |
Udayan Banerji | 60bfe7b | 2014-07-08 19:59:43 -0700 | [diff] [blame] | 470 | src_reg_file = SSE; |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 471 | immediate_bytes = 1; |
| 472 | break; |
| 473 | case 0x16: |
| 474 | opcode << "pextrd"; |
| 475 | prefix[2] = 0; |
| 476 | has_modrm = true; |
| 477 | store = true; |
Udayan Banerji | 60bfe7b | 2014-07-08 19:59:43 -0700 | [diff] [blame] | 478 | src_reg_file = SSE; |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 479 | immediate_bytes = 1; |
| 480 | break; |
| 481 | default: |
| 482 | opcode << StringPrintf("unknown opcode '0F 3A %02X'", *instr); |
| 483 | } |
| 484 | } else { |
| 485 | opcode << StringPrintf("unknown opcode '0F 3A %02X'", *instr); |
| 486 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 487 | break; |
Razvan A Lupusoru | bd288c2 | 2013-12-20 17:27:23 -0800 | [diff] [blame] | 488 | case 0x40: case 0x41: case 0x42: case 0x43: case 0x44: case 0x45: case 0x46: case 0x47: |
| 489 | case 0x48: case 0x49: case 0x4A: case 0x4B: case 0x4C: case 0x4D: case 0x4E: case 0x4F: |
| 490 | opcode << "cmov" << condition_codes[*instr & 0xF]; |
| 491 | has_modrm = true; |
| 492 | load = true; |
| 493 | break; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 494 | case 0x50: case 0x51: case 0x52: case 0x53: case 0x54: case 0x55: case 0x56: case 0x57: |
| 495 | case 0x58: case 0x59: case 0x5C: case 0x5D: case 0x5E: case 0x5F: { |
| 496 | switch (*instr) { |
| 497 | case 0x50: opcode << "movmsk"; break; |
| 498 | case 0x51: opcode << "sqrt"; break; |
| 499 | case 0x52: opcode << "rsqrt"; break; |
| 500 | case 0x53: opcode << "rcp"; break; |
| 501 | case 0x54: opcode << "and"; break; |
| 502 | case 0x55: opcode << "andn"; break; |
| 503 | case 0x56: opcode << "or"; break; |
| 504 | case 0x57: opcode << "xor"; break; |
| 505 | case 0x58: opcode << "add"; break; |
| 506 | case 0x59: opcode << "mul"; break; |
| 507 | case 0x5C: opcode << "sub"; break; |
| 508 | case 0x5D: opcode << "min"; break; |
| 509 | case 0x5E: opcode << "div"; break; |
| 510 | case 0x5F: opcode << "max"; break; |
Ian Rogers | 2c4257b | 2014-10-24 14:20:06 -0700 | [diff] [blame^] | 511 | default: LOG(FATAL) << "Unreachable"; UNREACHABLE(); |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 512 | } |
| 513 | if (prefix[2] == 0x66) { |
| 514 | opcode << "pd"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 515 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 516 | } else if (prefix[0] == 0xF2) { |
| 517 | opcode << "sd"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 518 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 519 | } else if (prefix[0] == 0xF3) { |
| 520 | opcode << "ss"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 521 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 522 | } else { |
| 523 | opcode << "ps"; |
| 524 | } |
| 525 | load = true; |
| 526 | has_modrm = true; |
| 527 | src_reg_file = dst_reg_file = SSE; |
| 528 | break; |
| 529 | } |
| 530 | case 0x5A: |
| 531 | if (prefix[2] == 0x66) { |
| 532 | opcode << "cvtpd2ps"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 533 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 534 | } else if (prefix[0] == 0xF2) { |
| 535 | opcode << "cvtsd2ss"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 536 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 537 | } else if (prefix[0] == 0xF3) { |
| 538 | opcode << "cvtss2sd"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 539 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 540 | } else { |
| 541 | opcode << "cvtps2pd"; |
| 542 | } |
| 543 | load = true; |
| 544 | has_modrm = true; |
| 545 | src_reg_file = dst_reg_file = SSE; |
| 546 | break; |
| 547 | case 0x5B: |
| 548 | if (prefix[2] == 0x66) { |
| 549 | opcode << "cvtps2dq"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 550 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 551 | } else if (prefix[0] == 0xF2) { |
| 552 | opcode << "bad opcode F2 0F 5B"; |
| 553 | } else if (prefix[0] == 0xF3) { |
| 554 | opcode << "cvttps2dq"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 555 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 556 | } else { |
| 557 | opcode << "cvtdq2ps"; |
| 558 | } |
| 559 | load = true; |
| 560 | has_modrm = true; |
| 561 | src_reg_file = dst_reg_file = SSE; |
| 562 | break; |
Lupusoru, Razvan A | b3a84e2 | 2014-07-28 14:11:01 -0700 | [diff] [blame] | 563 | case 0x60: case 0x61: case 0x62: case 0x6C: |
Razvan A Lupusoru | d3266bc | 2014-01-24 12:55:31 -0800 | [diff] [blame] | 564 | if (prefix[2] == 0x66) { |
| 565 | src_reg_file = dst_reg_file = SSE; |
| 566 | prefix[2] = 0; // Clear prefix now. It has served its purpose as part of the opcode. |
| 567 | } else { |
| 568 | src_reg_file = dst_reg_file = MMX; |
| 569 | } |
Lupusoru, Razvan A | b3a84e2 | 2014-07-28 14:11:01 -0700 | [diff] [blame] | 570 | switch (*instr) { |
| 571 | case 0x60: opcode << "punpcklbw"; break; |
| 572 | case 0x61: opcode << "punpcklwd"; break; |
| 573 | case 0x62: opcode << "punpckldq"; break; |
| 574 | case 0x6c: opcode << "punpcklqdq"; break; |
| 575 | } |
Razvan A Lupusoru | d3266bc | 2014-01-24 12:55:31 -0800 | [diff] [blame] | 576 | load = true; |
| 577 | has_modrm = true; |
| 578 | break; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 579 | case 0x6E: |
| 580 | if (prefix[2] == 0x66) { |
| 581 | dst_reg_file = SSE; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 582 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 583 | } else { |
| 584 | dst_reg_file = MMX; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 585 | } |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 586 | opcode << "movd"; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 587 | load = true; |
| 588 | has_modrm = true; |
| 589 | break; |
| 590 | case 0x6F: |
| 591 | if (prefix[2] == 0x66) { |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 592 | src_reg_file = dst_reg_file = SSE; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 593 | opcode << "movdqa"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 594 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 595 | } else if (prefix[0] == 0xF3) { |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 596 | src_reg_file = dst_reg_file = SSE; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 597 | opcode << "movdqu"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 598 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 599 | } else { |
| 600 | dst_reg_file = MMX; |
| 601 | opcode << "movq"; |
| 602 | } |
| 603 | load = true; |
| 604 | has_modrm = true; |
| 605 | break; |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 606 | case 0x70: |
| 607 | if (prefix[2] == 0x66) { |
| 608 | opcode << "pshufd"; |
| 609 | prefix[2] = 0; |
| 610 | has_modrm = true; |
| 611 | store = true; |
| 612 | src_reg_file = dst_reg_file = SSE; |
| 613 | immediate_bytes = 1; |
| 614 | } else if (prefix[0] == 0xF2) { |
| 615 | opcode << "pshuflw"; |
| 616 | prefix[0] = 0; |
| 617 | has_modrm = true; |
| 618 | store = true; |
| 619 | src_reg_file = dst_reg_file = SSE; |
| 620 | immediate_bytes = 1; |
| 621 | } else { |
| 622 | opcode << StringPrintf("unknown opcode '0F %02X'", *instr); |
| 623 | } |
| 624 | break; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 625 | case 0x71: |
| 626 | if (prefix[2] == 0x66) { |
| 627 | dst_reg_file = SSE; |
| 628 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 629 | } else { |
| 630 | dst_reg_file = MMX; |
| 631 | } |
| 632 | static const char* x71_opcodes[] = {"unknown-71", "unknown-71", "psrlw", "unknown-71", "psraw", "unknown-71", "psllw", "unknown-71"}; |
| 633 | modrm_opcodes = x71_opcodes; |
| 634 | reg_is_opcode = true; |
| 635 | has_modrm = true; |
| 636 | store = true; |
| 637 | immediate_bytes = 1; |
| 638 | break; |
| 639 | case 0x72: |
| 640 | if (prefix[2] == 0x66) { |
| 641 | dst_reg_file = SSE; |
| 642 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 643 | } else { |
| 644 | dst_reg_file = MMX; |
| 645 | } |
| 646 | static const char* x72_opcodes[] = {"unknown-72", "unknown-72", "psrld", "unknown-72", "psrad", "unknown-72", "pslld", "unknown-72"}; |
| 647 | modrm_opcodes = x72_opcodes; |
| 648 | reg_is_opcode = true; |
| 649 | has_modrm = true; |
| 650 | store = true; |
| 651 | immediate_bytes = 1; |
| 652 | break; |
| 653 | case 0x73: |
| 654 | if (prefix[2] == 0x66) { |
| 655 | dst_reg_file = SSE; |
| 656 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 657 | } else { |
| 658 | dst_reg_file = MMX; |
| 659 | } |
Lupusoru, Razvan A | b3a84e2 | 2014-07-28 14:11:01 -0700 | [diff] [blame] | 660 | static const char* x73_opcodes[] = {"unknown-73", "unknown-73", "psrlq", "psrldq", "unknown-73", "unknown-73", "psllq", "unknown-73"}; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 661 | modrm_opcodes = x73_opcodes; |
| 662 | reg_is_opcode = true; |
| 663 | has_modrm = true; |
| 664 | store = true; |
| 665 | immediate_bytes = 1; |
| 666 | break; |
Olivier Come | fb0fecf | 2014-06-20 11:46:16 +0200 | [diff] [blame] | 667 | case 0x7C: |
| 668 | if (prefix[0] == 0xF2) { |
| 669 | opcode << "haddps"; |
| 670 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 671 | } else if (prefix[2] == 0x66) { |
| 672 | opcode << "haddpd"; |
| 673 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 674 | } else { |
| 675 | opcode << StringPrintf("unknown opcode '0F %02X'", *instr); |
| 676 | break; |
| 677 | } |
| 678 | src_reg_file = dst_reg_file = SSE; |
| 679 | has_modrm = true; |
| 680 | load = true; |
| 681 | break; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 682 | case 0x7E: |
| 683 | if (prefix[2] == 0x66) { |
| 684 | src_reg_file = SSE; |
| 685 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 686 | } else { |
| 687 | src_reg_file = MMX; |
| 688 | } |
| 689 | opcode << "movd"; |
| 690 | has_modrm = true; |
| 691 | store = true; |
| 692 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 693 | case 0x80: case 0x81: case 0x82: case 0x83: case 0x84: case 0x85: case 0x86: case 0x87: |
| 694 | case 0x88: case 0x89: case 0x8A: case 0x8B: case 0x8C: case 0x8D: case 0x8E: case 0x8F: |
| 695 | opcode << "j" << condition_codes[*instr & 0xF]; |
| 696 | branch_bytes = 4; |
| 697 | break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 698 | case 0x90: case 0x91: case 0x92: case 0x93: case 0x94: case 0x95: case 0x96: case 0x97: |
| 699 | case 0x98: case 0x99: case 0x9A: case 0x9B: case 0x9C: case 0x9D: case 0x9E: case 0x9F: |
| 700 | opcode << "set" << condition_codes[*instr & 0xF]; |
| 701 | modrm_opcodes = NULL; |
| 702 | reg_is_opcode = true; |
| 703 | has_modrm = true; |
| 704 | store = true; |
| 705 | break; |
Mark Mendell | 4708dcd | 2014-01-22 09:05:18 -0800 | [diff] [blame] | 706 | case 0xA4: |
| 707 | opcode << "shld"; |
| 708 | has_modrm = true; |
| 709 | load = true; |
| 710 | immediate_bytes = 1; |
| 711 | break; |
Yixin Shou | f40f890 | 2014-08-14 14:10:32 -0400 | [diff] [blame] | 712 | case 0xA5: |
| 713 | opcode << "shld"; |
| 714 | has_modrm = true; |
| 715 | load = true; |
| 716 | cx = true; |
| 717 | break; |
Mark Mendell | 4708dcd | 2014-01-22 09:05:18 -0800 | [diff] [blame] | 718 | case 0xAC: |
| 719 | opcode << "shrd"; |
| 720 | has_modrm = true; |
| 721 | load = true; |
| 722 | immediate_bytes = 1; |
| 723 | break; |
Yixin Shou | f40f890 | 2014-08-14 14:10:32 -0400 | [diff] [blame] | 724 | case 0xAD: |
| 725 | opcode << "shrd"; |
| 726 | has_modrm = true; |
| 727 | load = true; |
| 728 | cx = true; |
| 729 | break; |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 730 | case 0xAE: |
| 731 | if (prefix[0] == 0xF3) { |
Ian Rogers | 5e588b3 | 2013-02-21 15:05:09 -0800 | [diff] [blame] | 732 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 733 | static const char* xAE_opcodes[] = {"rdfsbase", "rdgsbase", "wrfsbase", "wrgsbase", "unknown-AE", "unknown-AE", "unknown-AE", "unknown-AE"}; |
| 734 | modrm_opcodes = xAE_opcodes; |
| 735 | reg_is_opcode = true; |
| 736 | has_modrm = true; |
| 737 | uint8_t reg_or_opcode = (instr[1] >> 3) & 7; |
| 738 | switch (reg_or_opcode) { |
| 739 | case 0: |
| 740 | prefix[1] = kFs; |
| 741 | load = true; |
| 742 | break; |
| 743 | case 1: |
| 744 | prefix[1] = kGs; |
| 745 | load = true; |
| 746 | break; |
| 747 | case 2: |
| 748 | prefix[1] = kFs; |
| 749 | store = true; |
| 750 | break; |
| 751 | case 3: |
| 752 | prefix[1] = kGs; |
| 753 | store = true; |
| 754 | break; |
| 755 | default: |
| 756 | load = true; |
| 757 | break; |
| 758 | } |
| 759 | } else { |
| 760 | static const char* xAE_opcodes[] = {"unknown-AE", "unknown-AE", "unknown-AE", "unknown-AE", "unknown-AE", "lfence", "mfence", "sfence"}; |
| 761 | modrm_opcodes = xAE_opcodes; |
| 762 | reg_is_opcode = true; |
| 763 | has_modrm = true; |
| 764 | load = true; |
| 765 | no_ops = true; |
| 766 | } |
| 767 | break; |
Mark Mendell | f723f0c | 2013-12-11 17:50:58 -0800 | [diff] [blame] | 768 | case 0xAF: opcode << "imul"; has_modrm = true; load = true; break; |
jeffhao | 8302576 | 2012-08-02 11:08:56 -0700 | [diff] [blame] | 769 | case 0xB1: opcode << "cmpxchg"; has_modrm = true; store = true; break; |
Serguei Katkov | 94f3eb0 | 2014-06-24 13:23:17 +0700 | [diff] [blame] | 770 | case 0xB6: opcode << "movzxb"; has_modrm = true; load = true; byte_second_operand = true; break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 771 | case 0xB7: opcode << "movzxw"; has_modrm = true; load = true; break; |
Andreas Gampe | c8ccf68 | 2014-09-29 20:07:43 -0700 | [diff] [blame] | 772 | case 0xBE: opcode << "movsxb"; has_modrm = true; load = true; byte_second_operand = true; rex |= (rex == 0 ? 0 : REX_W); break; |
jeffhao | 854029c | 2012-07-23 17:31:30 -0700 | [diff] [blame] | 773 | case 0xBF: opcode << "movsxw"; has_modrm = true; load = true; break; |
Jean Christophe Beyler | b5bce7c | 2014-07-25 12:32:18 -0700 | [diff] [blame] | 774 | case 0xC3: opcode << "movnti"; store = true; has_modrm = true; break; |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 775 | case 0xC5: |
| 776 | if (prefix[2] == 0x66) { |
| 777 | opcode << "pextrw"; |
| 778 | prefix[2] = 0; |
| 779 | has_modrm = true; |
| 780 | store = true; |
Udayan Banerji | 60bfe7b | 2014-07-08 19:59:43 -0700 | [diff] [blame] | 781 | src_reg_file = SSE; |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 782 | immediate_bytes = 1; |
| 783 | } else { |
| 784 | opcode << StringPrintf("unknown opcode '0F %02X'", *instr); |
| 785 | } |
| 786 | break; |
Olivier Come | fb0fecf | 2014-06-20 11:46:16 +0200 | [diff] [blame] | 787 | case 0xC6: |
| 788 | if (prefix[2] == 0x66) { |
| 789 | opcode << "shufpd"; |
| 790 | prefix[2] = 0; |
| 791 | } else { |
| 792 | opcode << "shufps"; |
| 793 | } |
| 794 | has_modrm = true; |
| 795 | store = true; |
| 796 | src_reg_file = dst_reg_file = SSE; |
| 797 | immediate_bytes = 1; |
| 798 | break; |
Vladimir Marko | 70b797d | 2013-12-03 15:25:24 +0000 | [diff] [blame] | 799 | case 0xC7: |
| 800 | static const char* x0FxC7_opcodes[] = { "unknown-0f-c7", "cmpxchg8b", "unknown-0f-c7", "unknown-0f-c7", "unknown-0f-c7", "unknown-0f-c7", "unknown-0f-c7", "unknown-0f-c7" }; |
| 801 | modrm_opcodes = x0FxC7_opcodes; |
| 802 | has_modrm = true; |
| 803 | reg_is_opcode = true; |
| 804 | store = true; |
| 805 | break; |
Vladimir Marko | a8b4caf | 2013-10-24 15:08:57 +0100 | [diff] [blame] | 806 | case 0xC8: case 0xC9: case 0xCA: case 0xCB: case 0xCC: case 0xCD: case 0xCE: case 0xCF: |
| 807 | opcode << "bswap"; |
| 808 | reg_in_opcode = true; |
| 809 | break; |
Lupusoru, Razvan A | b3a84e2 | 2014-07-28 14:11:01 -0700 | [diff] [blame] | 810 | case 0xD4: |
| 811 | if (prefix[2] == 0x66) { |
| 812 | src_reg_file = dst_reg_file = SSE; |
| 813 | prefix[2] = 0; |
| 814 | } else { |
| 815 | src_reg_file = dst_reg_file = MMX; |
| 816 | } |
| 817 | opcode << "paddq"; |
| 818 | prefix[2] = 0; |
| 819 | has_modrm = true; |
| 820 | load = true; |
| 821 | break; |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 822 | case 0xDB: |
| 823 | if (prefix[2] == 0x66) { |
| 824 | src_reg_file = dst_reg_file = SSE; |
| 825 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 826 | } else { |
| 827 | src_reg_file = dst_reg_file = MMX; |
| 828 | } |
| 829 | opcode << "pand"; |
| 830 | prefix[2] = 0; |
| 831 | has_modrm = true; |
| 832 | load = true; |
| 833 | break; |
| 834 | case 0xD5: |
| 835 | if (prefix[2] == 0x66) { |
| 836 | opcode << "pmullw"; |
| 837 | prefix[2] = 0; |
| 838 | has_modrm = true; |
| 839 | load = true; |
| 840 | src_reg_file = dst_reg_file = SSE; |
| 841 | } else { |
| 842 | opcode << StringPrintf("unknown opcode '0F %02X'", *instr); |
| 843 | } |
| 844 | break; |
| 845 | case 0xEB: |
| 846 | if (prefix[2] == 0x66) { |
| 847 | src_reg_file = dst_reg_file = SSE; |
| 848 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 849 | } else { |
| 850 | src_reg_file = dst_reg_file = MMX; |
| 851 | } |
| 852 | opcode << "por"; |
| 853 | prefix[2] = 0; |
| 854 | has_modrm = true; |
| 855 | load = true; |
| 856 | break; |
| 857 | case 0xEF: |
| 858 | if (prefix[2] == 0x66) { |
| 859 | src_reg_file = dst_reg_file = SSE; |
| 860 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 861 | } else { |
| 862 | src_reg_file = dst_reg_file = MMX; |
| 863 | } |
| 864 | opcode << "pxor"; |
| 865 | prefix[2] = 0; |
| 866 | has_modrm = true; |
| 867 | load = true; |
| 868 | break; |
Lupusoru, Razvan A | b3a84e2 | 2014-07-28 14:11:01 -0700 | [diff] [blame] | 869 | case 0xF4: |
| 870 | case 0xF6: |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 871 | case 0xF8: |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 872 | case 0xF9: |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 873 | case 0xFA: |
Lupusoru, Razvan A | b3a84e2 | 2014-07-28 14:11:01 -0700 | [diff] [blame] | 874 | case 0xFB: |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 875 | case 0xFC: |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 876 | case 0xFD: |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 877 | case 0xFE: |
| 878 | if (prefix[2] == 0x66) { |
| 879 | src_reg_file = dst_reg_file = SSE; |
| 880 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 881 | } else { |
| 882 | src_reg_file = dst_reg_file = MMX; |
| 883 | } |
Lupusoru, Razvan A | b3a84e2 | 2014-07-28 14:11:01 -0700 | [diff] [blame] | 884 | switch (*instr) { |
| 885 | case 0xF4: opcode << "pmuludq"; break; |
| 886 | case 0xF6: opcode << "psadbw"; break; |
| 887 | case 0xF8: opcode << "psubb"; break; |
| 888 | case 0xF9: opcode << "psubw"; break; |
| 889 | case 0xFA: opcode << "psubd"; break; |
| 890 | case 0xFB: opcode << "psubq"; break; |
| 891 | case 0xFC: opcode << "paddb"; break; |
| 892 | case 0xFD: opcode << "paddw"; break; |
| 893 | case 0xFE: opcode << "paddd"; break; |
| 894 | } |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 895 | prefix[2] = 0; |
| 896 | has_modrm = true; |
| 897 | load = true; |
| 898 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 899 | default: |
| 900 | opcode << StringPrintf("unknown opcode '0F %02X'", *instr); |
| 901 | break; |
| 902 | } |
| 903 | break; |
| 904 | case 0x80: case 0x81: case 0x82: case 0x83: |
| 905 | static const char* x80_opcodes[] = {"add", "or", "adc", "sbb", "and", "sub", "xor", "cmp"}; |
| 906 | modrm_opcodes = x80_opcodes; |
| 907 | has_modrm = true; |
| 908 | reg_is_opcode = true; |
| 909 | store = true; |
| 910 | byte_operand = (*instr & 1) == 0; |
| 911 | immediate_bytes = *instr == 0x81 ? 4 : 1; |
| 912 | break; |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 913 | case 0x84: case 0x85: |
| 914 | opcode << "test"; |
| 915 | has_modrm = true; |
| 916 | load = true; |
| 917 | byte_operand = (*instr & 1) == 0; |
| 918 | break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 919 | case 0x8D: |
| 920 | opcode << "lea"; |
| 921 | has_modrm = true; |
| 922 | load = true; |
| 923 | break; |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 924 | case 0x8F: |
| 925 | opcode << "pop"; |
| 926 | has_modrm = true; |
| 927 | reg_is_opcode = true; |
| 928 | store = true; |
| 929 | break; |
Mark Mendell | 2bf31e6 | 2014-01-23 12:13:40 -0800 | [diff] [blame] | 930 | case 0x99: |
| 931 | opcode << "cdq"; |
| 932 | break; |
Vladimir Kostyukov | d48b8a2 | 2014-06-24 16:40:19 +0700 | [diff] [blame] | 933 | case 0x9B: |
| 934 | if (instr[1] == 0xDF && instr[2] == 0xE0) { |
| 935 | opcode << "fstsw\tax"; |
| 936 | instr += 2; |
| 937 | } else { |
| 938 | opcode << StringPrintf("unknown opcode '%02X'", *instr); |
| 939 | } |
| 940 | break; |
Mark Mendell | 4028a6c | 2014-02-19 20:06:20 -0800 | [diff] [blame] | 941 | case 0xAF: |
| 942 | opcode << (prefix[2] == 0x66 ? "scasw" : "scasl"); |
| 943 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 944 | case 0xB0: case 0xB1: case 0xB2: case 0xB3: case 0xB4: case 0xB5: case 0xB6: case 0xB7: |
| 945 | opcode << "mov"; |
| 946 | immediate_bytes = 1; |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 947 | byte_operand = true; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 948 | reg_in_opcode = true; |
Vladimir Kostyukov | 79bb184 | 2014-07-01 18:28:43 +0700 | [diff] [blame] | 949 | byte_operand = true; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 950 | break; |
| 951 | case 0xB8: case 0xB9: case 0xBA: case 0xBB: case 0xBC: case 0xBD: case 0xBE: case 0xBF: |
Vladimir Kostyukov | ec95f72 | 2014-07-23 12:10:07 +0700 | [diff] [blame] | 952 | if ((rex & REX_W) != 0) { |
Yixin Shou | 5192cbb | 2014-07-01 13:48:17 -0400 | [diff] [blame] | 953 | opcode << "movabsq"; |
| 954 | immediate_bytes = 8; |
| 955 | reg_in_opcode = true; |
| 956 | break; |
| 957 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 958 | opcode << "mov"; |
| 959 | immediate_bytes = 4; |
| 960 | reg_in_opcode = true; |
| 961 | break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 962 | case 0xC0: case 0xC1: |
jeffhao | e296248 | 2012-06-28 11:29:57 -0700 | [diff] [blame] | 963 | case 0xD0: case 0xD1: case 0xD2: case 0xD3: |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 964 | static const char* shift_opcodes[] = |
| 965 | {"rol", "ror", "rcl", "rcr", "shl", "shr", "unknown-shift", "sar"}; |
| 966 | modrm_opcodes = shift_opcodes; |
| 967 | has_modrm = true; |
| 968 | reg_is_opcode = true; |
| 969 | store = true; |
Elliott Hughes | 16b5c29 | 2012-04-16 20:37:16 -0700 | [diff] [blame] | 970 | immediate_bytes = ((*instr & 0xf0) == 0xc0) ? 1 : 0; |
jeffhao | e296248 | 2012-06-28 11:29:57 -0700 | [diff] [blame] | 971 | cx = (*instr == 0xD2) || (*instr == 0xD3); |
| 972 | byte_operand = (*instr == 0xC0); |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 973 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 974 | case 0xC3: opcode << "ret"; break; |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 975 | case 0xC6: |
| 976 | static const char* c6_opcodes[] = {"mov", "unknown-c6", "unknown-c6", "unknown-c6", "unknown-c6", "unknown-c6", "unknown-c6", "unknown-c6"}; |
| 977 | modrm_opcodes = c6_opcodes; |
| 978 | store = true; |
| 979 | immediate_bytes = 1; |
| 980 | has_modrm = true; |
| 981 | reg_is_opcode = true; |
| 982 | byte_operand = true; |
| 983 | break; |
Elliott Hughes | 0589ca9 | 2012-04-09 18:26:20 -0700 | [diff] [blame] | 984 | case 0xC7: |
| 985 | static const char* c7_opcodes[] = {"mov", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7"}; |
| 986 | modrm_opcodes = c7_opcodes; |
| 987 | store = true; |
| 988 | immediate_bytes = 4; |
| 989 | has_modrm = true; |
| 990 | reg_is_opcode = true; |
| 991 | break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 992 | case 0xCC: opcode << "int 3"; break; |
Mark Mendell | d19b55a | 2013-12-12 09:55:34 -0800 | [diff] [blame] | 993 | case 0xD9: |
Vladimir Kostyukov | d48b8a2 | 2014-06-24 16:40:19 +0700 | [diff] [blame] | 994 | if (instr[1] == 0xF8) { |
| 995 | opcode << "fprem"; |
| 996 | instr++; |
| 997 | } else { |
| 998 | static const char* d9_opcodes[] = {"flds", "unknown-d9", "fsts", "fstps", "fldenv", "fldcw", |
| 999 | "fnstenv", "fnstcw"}; |
| 1000 | modrm_opcodes = d9_opcodes; |
| 1001 | store = true; |
| 1002 | has_modrm = true; |
| 1003 | reg_is_opcode = true; |
| 1004 | } |
| 1005 | break; |
| 1006 | case 0xDA: |
| 1007 | if (instr[1] == 0xE9) { |
| 1008 | opcode << "fucompp"; |
| 1009 | instr++; |
| 1010 | } else { |
| 1011 | opcode << StringPrintf("unknown opcode '%02X'", *instr); |
| 1012 | } |
Mark Mendell | d19b55a | 2013-12-12 09:55:34 -0800 | [diff] [blame] | 1013 | break; |
Razvan A Lupusoru | 614c2b4 | 2014-01-28 17:05:21 -0800 | [diff] [blame] | 1014 | case 0xDB: |
| 1015 | static const char* db_opcodes[] = {"fildl", "unknown-db", "unknown-db", "unknown-db", "unknown-db", "unknown-db", "unknown-db", "unknown-db"}; |
| 1016 | modrm_opcodes = db_opcodes; |
| 1017 | load = true; |
| 1018 | has_modrm = true; |
| 1019 | reg_is_opcode = true; |
| 1020 | break; |
Mark Mendell | d19b55a | 2013-12-12 09:55:34 -0800 | [diff] [blame] | 1021 | case 0xDD: |
| 1022 | static const char* dd_opcodes[] = {"fldl", "fisttp", "fstl", "fstpl", "frstor", "unknown-dd", "fnsave", "fnstsw"}; |
| 1023 | modrm_opcodes = dd_opcodes; |
| 1024 | store = true; |
| 1025 | has_modrm = true; |
| 1026 | reg_is_opcode = true; |
| 1027 | break; |
Razvan A Lupusoru | 614c2b4 | 2014-01-28 17:05:21 -0800 | [diff] [blame] | 1028 | case 0xDF: |
| 1029 | static const char* df_opcodes[] = {"fild", "unknown-df", "unknown-df", "unknown-df", "unknown-df", "fildll", "unknown-df", "unknown-df"}; |
| 1030 | modrm_opcodes = df_opcodes; |
| 1031 | load = true; |
| 1032 | has_modrm = true; |
| 1033 | reg_is_opcode = true; |
| 1034 | break; |
Mark Mendell | 4028a6c | 2014-02-19 20:06:20 -0800 | [diff] [blame] | 1035 | case 0xE3: opcode << "jecxz"; branch_bytes = 1; break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 1036 | case 0xE8: opcode << "call"; branch_bytes = 4; break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1037 | case 0xE9: opcode << "jmp"; branch_bytes = 4; break; |
| 1038 | case 0xEB: opcode << "jmp"; branch_bytes = 1; break; |
jeffhao | 77ae36b | 2012-08-07 14:18:16 -0700 | [diff] [blame] | 1039 | case 0xF5: opcode << "cmc"; break; |
jeffhao | 174651d | 2012-04-19 15:27:22 -0700 | [diff] [blame] | 1040 | case 0xF6: case 0xF7: |
| 1041 | static const char* f7_opcodes[] = {"test", "unknown-f7", "not", "neg", "mul edx:eax, eax *", "imul edx:eax, eax *", "div edx:eax, edx:eax /", "idiv edx:eax, edx:eax /"}; |
| 1042 | modrm_opcodes = f7_opcodes; |
| 1043 | has_modrm = true; |
| 1044 | reg_is_opcode = true; |
| 1045 | store = true; |
| 1046 | immediate_bytes = ((instr[1] & 0x38) == 0) ? 1 : 0; |
| 1047 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1048 | case 0xFF: |
Vladimir Kostyukov | e443a80 | 2014-06-30 15:44:12 +0700 | [diff] [blame] | 1049 | { |
| 1050 | static const char* ff_opcodes[] = {"inc", "dec", "call", "call", "jmp", "jmp", "push", "unknown-ff"}; |
| 1051 | modrm_opcodes = ff_opcodes; |
| 1052 | has_modrm = true; |
| 1053 | reg_is_opcode = true; |
| 1054 | load = true; |
| 1055 | const uint8_t opcode_digit = (instr[1] >> 3) & 7; |
| 1056 | // 'call', 'jmp' and 'push' are target specific instructions |
| 1057 | if (opcode_digit == 2 || opcode_digit == 4 || opcode_digit == 6) { |
| 1058 | target_specific = true; |
| 1059 | } |
| 1060 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1061 | break; |
| 1062 | default: |
| 1063 | opcode << StringPrintf("unknown opcode '%02X'", *instr); |
| 1064 | break; |
| 1065 | } |
| 1066 | std::ostringstream args; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 1067 | // We force the REX prefix to be available for 64-bit target |
| 1068 | // in order to dump addr (base/index) registers correctly. |
| 1069 | uint8_t rex64 = supports_rex_ ? (rex | 0x40) : rex; |
Vladimir Kostyukov | e443a80 | 2014-06-30 15:44:12 +0700 | [diff] [blame] | 1070 | // REX.W should be forced for 64-target and target-specific instructions (i.e., push or pop). |
| 1071 | uint8_t rex_w = (supports_rex_ && target_specific) ? (rex | 0x48) : rex; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1072 | if (reg_in_opcode) { |
| 1073 | DCHECK(!has_modrm); |
Vladimir Kostyukov | 79bb184 | 2014-07-01 18:28:43 +0700 | [diff] [blame] | 1074 | DumpOpcodeReg(args, rex_w, *instr & 0x7, byte_operand, prefix[2]); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1075 | } |
| 1076 | instr++; |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 1077 | uint32_t address_bits = 0; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1078 | if (has_modrm) { |
| 1079 | uint8_t modrm = *instr; |
| 1080 | instr++; |
| 1081 | uint8_t mod = modrm >> 6; |
| 1082 | uint8_t reg_or_opcode = (modrm >> 3) & 7; |
| 1083 | uint8_t rm = modrm & 7; |
| 1084 | std::ostringstream address; |
Vladimir Kostyukov | e8861b3 | 2014-04-18 17:06:15 +0700 | [diff] [blame] | 1085 | if (mod == 0 && rm == 5) { |
| 1086 | if (!supports_rex_) { // Absolute address. |
| 1087 | address_bits = *reinterpret_cast<const uint32_t*>(instr); |
| 1088 | address << StringPrintf("[0x%x]", address_bits); |
| 1089 | } else { // 64-bit RIP relative addressing. |
| 1090 | address << StringPrintf("[RIP + 0x%x]", *reinterpret_cast<const uint32_t*>(instr)); |
| 1091 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1092 | instr += 4; |
| 1093 | } else if (rm == 4 && mod != 3) { // SIB |
| 1094 | uint8_t sib = *instr; |
| 1095 | instr++; |
Vladimir Kostyukov | e8861b3 | 2014-04-18 17:06:15 +0700 | [diff] [blame] | 1096 | uint8_t scale = (sib >> 6) & 3; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1097 | uint8_t index = (sib >> 3) & 7; |
| 1098 | uint8_t base = sib & 7; |
| 1099 | address << "["; |
| 1100 | if (base != 5 || mod != 0) { |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 1101 | DumpBaseReg(address, rex64, base); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1102 | if (index != 4) { |
| 1103 | address << " + "; |
| 1104 | } |
| 1105 | } |
| 1106 | if (index != 4) { |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 1107 | DumpIndexReg(address, rex64, index); |
Vladimir Kostyukov | e8861b3 | 2014-04-18 17:06:15 +0700 | [diff] [blame] | 1108 | if (scale != 0) { |
| 1109 | address << StringPrintf(" * %d", 1 << scale); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1110 | } |
| 1111 | } |
Vladimir Kostyukov | e8861b3 | 2014-04-18 17:06:15 +0700 | [diff] [blame] | 1112 | if (mod == 0) { |
| 1113 | if (base == 5) { |
| 1114 | if (index != 4) { |
| 1115 | address << StringPrintf(" + %d", *reinterpret_cast<const int32_t*>(instr)); |
| 1116 | } else { |
| 1117 | // 64-bit low 32-bit absolute address, redundant absolute address encoding on 32-bit. |
| 1118 | address_bits = *reinterpret_cast<const uint32_t*>(instr); |
| 1119 | address << StringPrintf("%d", address_bits); |
| 1120 | } |
| 1121 | instr += 4; |
| 1122 | } |
| 1123 | } else if (mod == 1) { |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1124 | address << StringPrintf(" + %d", *reinterpret_cast<const int8_t*>(instr)); |
| 1125 | instr++; |
| 1126 | } else if (mod == 2) { |
| 1127 | address << StringPrintf(" + %d", *reinterpret_cast<const int32_t*>(instr)); |
| 1128 | instr += 4; |
| 1129 | } |
| 1130 | address << "]"; |
| 1131 | } else { |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 1132 | if (mod == 3) { |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 1133 | if (!no_ops) { |
Serguei Katkov | 94f3eb0 | 2014-06-24 13:23:17 +0700 | [diff] [blame] | 1134 | DumpRmReg(address, rex_w, rm, byte_operand || byte_second_operand, |
| 1135 | prefix[2], load ? src_reg_file : dst_reg_file); |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 1136 | } |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 1137 | } else { |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1138 | address << "["; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 1139 | DumpBaseReg(address, rex64, rm); |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 1140 | if (mod == 1) { |
| 1141 | address << StringPrintf(" + %d", *reinterpret_cast<const int8_t*>(instr)); |
| 1142 | instr++; |
| 1143 | } else if (mod == 2) { |
| 1144 | address << StringPrintf(" + %d", *reinterpret_cast<const int32_t*>(instr)); |
| 1145 | instr += 4; |
| 1146 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1147 | address << "]"; |
| 1148 | } |
| 1149 | } |
| 1150 | |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 1151 | if (reg_is_opcode && modrm_opcodes != NULL) { |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1152 | opcode << modrm_opcodes[reg_or_opcode]; |
| 1153 | } |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 1154 | |
| 1155 | // Add opcode suffixes to indicate size. |
| 1156 | if (byte_operand) { |
| 1157 | opcode << 'b'; |
| 1158 | } else if ((rex & REX_W) != 0) { |
| 1159 | opcode << 'q'; |
| 1160 | } else if (prefix[2] == 0x66) { |
| 1161 | opcode << 'w'; |
| 1162 | } |
| 1163 | |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1164 | if (load) { |
| 1165 | if (!reg_is_opcode) { |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 1166 | DumpReg(args, rex, reg_or_opcode, byte_operand, prefix[2], dst_reg_file); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1167 | args << ", "; |
| 1168 | } |
| 1169 | DumpSegmentOverride(args, prefix[1]); |
| 1170 | args << address.str(); |
| 1171 | } else { |
| 1172 | DCHECK(store); |
| 1173 | DumpSegmentOverride(args, prefix[1]); |
| 1174 | args << address.str(); |
| 1175 | if (!reg_is_opcode) { |
| 1176 | args << ", "; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 1177 | DumpReg(args, rex, reg_or_opcode, byte_operand, prefix[2], src_reg_file); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1178 | } |
| 1179 | } |
| 1180 | } |
| 1181 | if (ax) { |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 1182 | // If this opcode implicitly uses ax, ax is always the first arg. |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 1183 | DumpReg(args, rex, 0 /* EAX */, byte_operand, prefix[2], GPR); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1184 | } |
jeffhao | e296248 | 2012-06-28 11:29:57 -0700 | [diff] [blame] | 1185 | if (cx) { |
| 1186 | args << ", "; |
| 1187 | DumpReg(args, rex, 1 /* ECX */, true, prefix[2], GPR); |
| 1188 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1189 | if (immediate_bytes > 0) { |
jeffhao | e296248 | 2012-06-28 11:29:57 -0700 | [diff] [blame] | 1190 | if (has_modrm || reg_in_opcode || ax || cx) { |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1191 | args << ", "; |
| 1192 | } |
| 1193 | if (immediate_bytes == 1) { |
| 1194 | args << StringPrintf("%d", *reinterpret_cast<const int8_t*>(instr)); |
| 1195 | instr++; |
Yixin Shou | 5192cbb | 2014-07-01 13:48:17 -0400 | [diff] [blame] | 1196 | } else if (immediate_bytes == 4) { |
Mark Mendell | 67d18be | 2014-05-30 15:05:09 -0400 | [diff] [blame] | 1197 | if (prefix[2] == 0x66) { // Operand size override from 32-bit to 16-bit. |
| 1198 | args << StringPrintf("%d", *reinterpret_cast<const int16_t*>(instr)); |
| 1199 | instr += 2; |
| 1200 | } else { |
| 1201 | args << StringPrintf("%d", *reinterpret_cast<const int32_t*>(instr)); |
| 1202 | instr += 4; |
| 1203 | } |
Yixin Shou | 5192cbb | 2014-07-01 13:48:17 -0400 | [diff] [blame] | 1204 | } else { |
| 1205 | CHECK_EQ(immediate_bytes, 8u); |
| 1206 | args << StringPrintf("%" PRId64, *reinterpret_cast<const int64_t*>(instr)); |
| 1207 | instr += 8; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1208 | } |
| 1209 | } else if (branch_bytes > 0) { |
| 1210 | DCHECK(!has_modrm); |
| 1211 | int32_t displacement; |
| 1212 | if (branch_bytes == 1) { |
| 1213 | displacement = *reinterpret_cast<const int8_t*>(instr); |
| 1214 | instr++; |
| 1215 | } else { |
| 1216 | CHECK_EQ(branch_bytes, 4u); |
| 1217 | displacement = *reinterpret_cast<const int32_t*>(instr); |
| 1218 | instr += 4; |
| 1219 | } |
Brian Carlstrom | 2cbaccb | 2014-09-14 20:34:17 -0700 | [diff] [blame] | 1220 | args << StringPrintf("%+d (", displacement) |
| 1221 | << FormatInstructionPointer(instr + displacement) |
| 1222 | << ")"; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1223 | } |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1224 | if (prefix[1] == kFs && !supports_rex_) { |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 1225 | args << " ; "; |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1226 | Thread::DumpThreadOffset<4>(args, address_bits); |
| 1227 | } |
| 1228 | if (prefix[1] == kGs && supports_rex_) { |
| 1229 | args << " ; "; |
| 1230 | Thread::DumpThreadOffset<8>(args, address_bits); |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 1231 | } |
Elliott Hughes | 28fa76d | 2012-04-09 17:31:46 -0700 | [diff] [blame] | 1232 | std::stringstream hex; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1233 | for (size_t i = 0; begin_instr + i < instr; ++i) { |
Elliott Hughes | 28fa76d | 2012-04-09 17:31:46 -0700 | [diff] [blame] | 1234 | hex << StringPrintf("%02X", begin_instr[i]); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1235 | } |
Ian Rogers | 5e588b3 | 2013-02-21 15:05:09 -0800 | [diff] [blame] | 1236 | std::stringstream prefixed_opcode; |
| 1237 | switch (prefix[0]) { |
| 1238 | case 0xF0: prefixed_opcode << "lock "; break; |
| 1239 | case 0xF2: prefixed_opcode << "repne "; break; |
| 1240 | case 0xF3: prefixed_opcode << "repe "; break; |
| 1241 | case 0: break; |
Ian Rogers | 2c4257b | 2014-10-24 14:20:06 -0700 | [diff] [blame^] | 1242 | default: LOG(FATAL) << "Unreachable"; UNREACHABLE(); |
Ian Rogers | 5e588b3 | 2013-02-21 15:05:09 -0800 | [diff] [blame] | 1243 | } |
| 1244 | prefixed_opcode << opcode.str(); |
Brian Carlstrom | 2cbaccb | 2014-09-14 20:34:17 -0700 | [diff] [blame] | 1245 | os << FormatInstructionPointer(begin_instr) |
| 1246 | << StringPrintf(": %22s \t%-7s ", hex.str().c_str(), prefixed_opcode.str().c_str()) |
Ian Rogers | 5e588b3 | 2013-02-21 15:05:09 -0800 | [diff] [blame] | 1247 | << args.str() << '\n'; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1248 | return instr - begin_instr; |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 1249 | } // NOLINT(readability/fn_size) |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1250 | |
| 1251 | } // namespace x86 |
| 1252 | } // namespace art |