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 | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 19 | #include <iostream> |
| 20 | |
Elliott Hughes | 07ed66b | 2012-12-12 18:34:25 -0800 | [diff] [blame] | 21 | #include "base/logging.h" |
Elliott Hughes | e222ee0 | 2012-12-13 14:41:43 -0800 | [diff] [blame] | 22 | #include "base/stringprintf.h" |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 23 | #include "thread.h" |
Yixin Shou | 5192cbb | 2014-07-01 13:48:17 -0400 | [diff] [blame] | 24 | #include <inttypes.h> |
Elliott Hughes | 0f3c553 | 2012-03-30 14:51:51 -0700 | [diff] [blame] | 25 | |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 26 | namespace art { |
| 27 | namespace x86 { |
| 28 | |
Ian Rogers | b23a772 | 2012-10-09 16:54:26 -0700 | [diff] [blame] | 29 | size_t DisassemblerX86::Dump(std::ostream& os, const uint8_t* begin) { |
| 30 | return DumpInstruction(os, begin); |
| 31 | } |
| 32 | |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 33 | void DisassemblerX86::Dump(std::ostream& os, const uint8_t* begin, const uint8_t* end) { |
| 34 | size_t length = 0; |
| 35 | for (const uint8_t* cur = begin; cur < end; cur += length) { |
| 36 | length = DumpInstruction(os, cur); |
| 37 | } |
| 38 | } |
| 39 | |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 40 | static const char* gReg8Names[] = { |
| 41 | "al", "cl", "dl", "bl", "ah", "ch", "dh", "bh" |
| 42 | }; |
| 43 | static const char* gExtReg8Names[] = { |
| 44 | "al", "cl", "dl", "bl", "spl", "bpl", "sil", "dil", |
| 45 | "r8l", "r9l", "r10l", "r11l", "r12l", "r13l", "r14l", "r15l" |
| 46 | }; |
| 47 | static const char* gReg16Names[] = { |
| 48 | "ax", "cx", "dx", "bx", "sp", "bp", "si", "di", |
| 49 | "r8w", "r9w", "r10w", "r11w", "r12w", "r13w", "r14w", "r15w" |
| 50 | }; |
| 51 | static const char* gReg32Names[] = { |
| 52 | "eax", "ecx", "edx", "ebx", "esp", "ebp", "esi", "edi", |
| 53 | "r8d", "r9d", "r10d", "r11d", "r12d", "r13d", "r14d", "r15d" |
| 54 | }; |
Ian Rogers | 38e1203 | 2014-03-14 14:06:14 -0700 | [diff] [blame] | 55 | static const char* gReg64Names[] = { |
| 56 | "rax", "rcx", "rdx", "rbx", "rsp", "rbp", "rsi", "rdi", |
| 57 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15" |
| 58 | }; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 59 | |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 60 | // 64-bit opcode REX modifier. |
| 61 | constexpr uint8_t REX_W = 0b1000; |
| 62 | constexpr uint8_t REX_R = 0b0100; |
| 63 | constexpr uint8_t REX_X = 0b0010; |
| 64 | constexpr uint8_t REX_B = 0b0001; |
| 65 | |
Ian Rogers | 38e1203 | 2014-03-14 14:06:14 -0700 | [diff] [blame] | 66 | static void DumpReg0(std::ostream& os, uint8_t rex, size_t reg, |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 67 | bool byte_operand, uint8_t size_override) { |
Ian Rogers | 38e1203 | 2014-03-14 14:06:14 -0700 | [diff] [blame] | 68 | DCHECK_LT(reg, (rex == 0) ? 8u : 16u); |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 69 | bool rex_w = (rex & REX_W) != 0; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 70 | if (byte_operand) { |
| 71 | os << ((rex == 0) ? gReg8Names[reg] : gExtReg8Names[reg]); |
| 72 | } else if (rex_w) { |
| 73 | os << gReg64Names[reg]; |
| 74 | } else if (size_override == 0x66) { |
| 75 | os << gReg16Names[reg]; |
| 76 | } else { |
| 77 | os << gReg32Names[reg]; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 78 | } |
| 79 | } |
| 80 | |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 81 | enum RegFile { GPR, MMX, SSE }; |
| 82 | |
Mark Mendell | 88649c7 | 2014-06-04 21:20:00 -0400 | [diff] [blame] | 83 | static void DumpAnyReg(std::ostream& os, uint8_t rex, size_t reg, |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 84 | bool byte_operand, uint8_t size_override, RegFile reg_file) { |
| 85 | if (reg_file == GPR) { |
| 86 | DumpReg0(os, rex, reg, byte_operand, size_override); |
| 87 | } else if (reg_file == SSE) { |
| 88 | os << "xmm" << reg; |
| 89 | } else { |
| 90 | os << "mm" << reg; |
| 91 | } |
| 92 | } |
| 93 | |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 94 | static void DumpReg(std::ostream& os, uint8_t rex, uint8_t reg, |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 95 | bool byte_operand, uint8_t size_override, RegFile reg_file) { |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 96 | bool rex_r = (rex & REX_R) != 0; |
Ian Rogers | 38e1203 | 2014-03-14 14:06:14 -0700 | [diff] [blame] | 97 | size_t reg_num = rex_r ? (reg + 8) : reg; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 98 | DumpAnyReg(os, rex, reg_num, byte_operand, size_override, reg_file); |
| 99 | } |
| 100 | |
| 101 | static void DumpRmReg(std::ostream& os, uint8_t rex, uint8_t reg, |
| 102 | bool byte_operand, uint8_t size_override, RegFile reg_file) { |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 103 | bool rex_b = (rex & REX_B) != 0; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 104 | size_t reg_num = rex_b ? (reg + 8) : reg; |
| 105 | DumpAnyReg(os, rex, reg_num, byte_operand, size_override, reg_file); |
| 106 | } |
| 107 | |
| 108 | static void DumpAddrReg(std::ostream& os, uint8_t rex, uint8_t reg) { |
| 109 | if (rex != 0) { |
| 110 | os << gReg64Names[reg]; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 111 | } else { |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 112 | os << gReg32Names[reg]; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 113 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 114 | } |
| 115 | |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 116 | static void DumpBaseReg(std::ostream& os, uint8_t rex, uint8_t reg) { |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 117 | bool rex_b = (rex & REX_B) != 0; |
Ian Rogers | 38e1203 | 2014-03-14 14:06:14 -0700 | [diff] [blame] | 118 | size_t reg_num = rex_b ? (reg + 8) : reg; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 119 | DumpAddrReg(os, rex, reg_num); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 120 | } |
| 121 | |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 122 | static void DumpIndexReg(std::ostream& os, uint8_t rex, uint8_t reg) { |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 123 | bool rex_x = (rex & REX_X) != 0; |
Ian Rogers | 38e1203 | 2014-03-14 14:06:14 -0700 | [diff] [blame] | 124 | uint8_t reg_num = rex_x ? (reg + 8) : reg; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 125 | DumpAddrReg(os, rex, reg_num); |
| 126 | } |
| 127 | |
Vladimir Kostyukov | 79bb184 | 2014-07-01 18:28:43 +0700 | [diff] [blame] | 128 | static void DumpOpcodeReg(std::ostream& os, uint8_t rex, uint8_t reg, |
| 129 | bool byte_operand, uint8_t size_override) { |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 130 | bool rex_b = (rex & REX_B) != 0; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 131 | size_t reg_num = rex_b ? (reg + 8) : reg; |
Vladimir Kostyukov | 79bb184 | 2014-07-01 18:28:43 +0700 | [diff] [blame] | 132 | DumpReg0(os, rex, reg_num, byte_operand, size_override); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 133 | } |
| 134 | |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 135 | enum SegmentPrefix { |
| 136 | kCs = 0x2e, |
| 137 | kSs = 0x36, |
| 138 | kDs = 0x3e, |
| 139 | kEs = 0x26, |
| 140 | kFs = 0x64, |
| 141 | kGs = 0x65, |
| 142 | }; |
| 143 | |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 144 | static void DumpSegmentOverride(std::ostream& os, uint8_t segment_prefix) { |
| 145 | switch (segment_prefix) { |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 146 | case kCs: os << "cs:"; break; |
| 147 | case kSs: os << "ss:"; break; |
| 148 | case kDs: os << "ds:"; break; |
| 149 | case kEs: os << "es:"; break; |
| 150 | case kFs: os << "fs:"; break; |
| 151 | case kGs: os << "gs:"; break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 152 | default: break; |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | size_t DisassemblerX86::DumpInstruction(std::ostream& os, const uint8_t* instr) { |
| 157 | const uint8_t* begin_instr = instr; |
| 158 | bool have_prefixes = true; |
| 159 | uint8_t prefix[4] = {0, 0, 0, 0}; |
| 160 | const char** modrm_opcodes = NULL; |
| 161 | do { |
| 162 | switch (*instr) { |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 163 | // Group 1 - lock and repeat prefixes: |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 164 | case 0xF0: |
| 165 | case 0xF2: |
| 166 | case 0xF3: |
| 167 | prefix[0] = *instr; |
| 168 | break; |
| 169 | // Group 2 - segment override prefixes: |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 170 | case kCs: |
| 171 | case kSs: |
| 172 | case kDs: |
| 173 | case kEs: |
| 174 | case kFs: |
| 175 | case kGs: |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 176 | prefix[1] = *instr; |
| 177 | break; |
| 178 | // Group 3 - operand size override: |
| 179 | case 0x66: |
| 180 | prefix[2] = *instr; |
| 181 | break; |
| 182 | // Group 4 - address size override: |
| 183 | case 0x67: |
| 184 | prefix[3] = *instr; |
| 185 | break; |
| 186 | default: |
| 187 | have_prefixes = false; |
| 188 | break; |
| 189 | } |
| 190 | if (have_prefixes) { |
| 191 | instr++; |
| 192 | } |
| 193 | } while (have_prefixes); |
Ian Rogers | 38e1203 | 2014-03-14 14:06:14 -0700 | [diff] [blame] | 194 | uint8_t rex = (supports_rex_ && (*instr >= 0x40) && (*instr <= 0x4F)) ? *instr : 0; |
Vladimir Kostyukov | e8861b3 | 2014-04-18 17:06:15 +0700 | [diff] [blame] | 195 | if (rex != 0) { |
| 196 | instr++; |
| 197 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 198 | bool has_modrm = false; |
| 199 | bool reg_is_opcode = false; |
| 200 | size_t immediate_bytes = 0; |
| 201 | size_t branch_bytes = 0; |
| 202 | std::ostringstream opcode; |
| 203 | bool store = false; // stores to memory (ie rm is on the left) |
| 204 | bool load = false; // loads from memory (ie rm is on the right) |
Serguei Katkov | 94f3eb0 | 2014-06-24 13:23:17 +0700 | [diff] [blame] | 205 | bool byte_operand = false; // true when the opcode is dealing with byte operands |
| 206 | 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] | 207 | 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] | 208 | bool ax = false; // implicit use of ax |
jeffhao | e296248 | 2012-06-28 11:29:57 -0700 | [diff] [blame] | 209 | bool cx = false; // implicit use of cx |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 210 | bool reg_in_opcode = false; // low 3-bits of opcode encode register parameter |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 211 | bool no_ops = false; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 212 | RegFile src_reg_file = GPR; |
| 213 | RegFile dst_reg_file = GPR; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 214 | switch (*instr) { |
| 215 | #define DISASSEMBLER_ENTRY(opname, \ |
| 216 | rm8_r8, rm32_r32, \ |
| 217 | r8_rm8, r32_rm32, \ |
| 218 | ax8_i8, ax32_i32) \ |
| 219 | case rm8_r8: opcode << #opname; store = true; has_modrm = true; byte_operand = true; break; \ |
| 220 | case rm32_r32: opcode << #opname; store = true; has_modrm = true; break; \ |
| 221 | case r8_rm8: opcode << #opname; load = true; has_modrm = true; byte_operand = true; break; \ |
| 222 | case r32_rm32: opcode << #opname; load = true; has_modrm = true; break; \ |
| 223 | case ax8_i8: opcode << #opname; ax = true; immediate_bytes = 1; byte_operand = true; break; \ |
| 224 | case ax32_i32: opcode << #opname; ax = true; immediate_bytes = 4; break; |
| 225 | |
| 226 | DISASSEMBLER_ENTRY(add, |
| 227 | 0x00 /* RegMem8/Reg8 */, 0x01 /* RegMem32/Reg32 */, |
| 228 | 0x02 /* Reg8/RegMem8 */, 0x03 /* Reg32/RegMem32 */, |
| 229 | 0x04 /* Rax8/imm8 opcode */, 0x05 /* Rax32/imm32 */) |
| 230 | DISASSEMBLER_ENTRY(or, |
| 231 | 0x08 /* RegMem8/Reg8 */, 0x09 /* RegMem32/Reg32 */, |
| 232 | 0x0A /* Reg8/RegMem8 */, 0x0B /* Reg32/RegMem32 */, |
| 233 | 0x0C /* Rax8/imm8 opcode */, 0x0D /* Rax32/imm32 */) |
| 234 | DISASSEMBLER_ENTRY(adc, |
| 235 | 0x10 /* RegMem8/Reg8 */, 0x11 /* RegMem32/Reg32 */, |
| 236 | 0x12 /* Reg8/RegMem8 */, 0x13 /* Reg32/RegMem32 */, |
| 237 | 0x14 /* Rax8/imm8 opcode */, 0x15 /* Rax32/imm32 */) |
| 238 | DISASSEMBLER_ENTRY(sbb, |
| 239 | 0x18 /* RegMem8/Reg8 */, 0x19 /* RegMem32/Reg32 */, |
| 240 | 0x1A /* Reg8/RegMem8 */, 0x1B /* Reg32/RegMem32 */, |
| 241 | 0x1C /* Rax8/imm8 opcode */, 0x1D /* Rax32/imm32 */) |
| 242 | DISASSEMBLER_ENTRY(and, |
| 243 | 0x20 /* RegMem8/Reg8 */, 0x21 /* RegMem32/Reg32 */, |
| 244 | 0x22 /* Reg8/RegMem8 */, 0x23 /* Reg32/RegMem32 */, |
| 245 | 0x24 /* Rax8/imm8 opcode */, 0x25 /* Rax32/imm32 */) |
| 246 | DISASSEMBLER_ENTRY(sub, |
| 247 | 0x28 /* RegMem8/Reg8 */, 0x29 /* RegMem32/Reg32 */, |
| 248 | 0x2A /* Reg8/RegMem8 */, 0x2B /* Reg32/RegMem32 */, |
| 249 | 0x2C /* Rax8/imm8 opcode */, 0x2D /* Rax32/imm32 */) |
| 250 | DISASSEMBLER_ENTRY(xor, |
| 251 | 0x30 /* RegMem8/Reg8 */, 0x31 /* RegMem32/Reg32 */, |
| 252 | 0x32 /* Reg8/RegMem8 */, 0x33 /* Reg32/RegMem32 */, |
| 253 | 0x34 /* Rax8/imm8 opcode */, 0x35 /* Rax32/imm32 */) |
| 254 | DISASSEMBLER_ENTRY(cmp, |
| 255 | 0x38 /* RegMem8/Reg8 */, 0x39 /* RegMem32/Reg32 */, |
| 256 | 0x3A /* Reg8/RegMem8 */, 0x3B /* Reg32/RegMem32 */, |
| 257 | 0x3C /* Rax8/imm8 opcode */, 0x3D /* Rax32/imm32 */) |
| 258 | |
| 259 | #undef DISASSEMBLER_ENTRY |
| 260 | case 0x50: case 0x51: case 0x52: case 0x53: case 0x54: case 0x55: case 0x56: case 0x57: |
| 261 | opcode << "push"; |
| 262 | reg_in_opcode = true; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 263 | target_specific = true; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 264 | break; |
| 265 | case 0x58: case 0x59: case 0x5A: case 0x5B: case 0x5C: case 0x5D: case 0x5E: case 0x5F: |
| 266 | opcode << "pop"; |
| 267 | reg_in_opcode = true; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 268 | target_specific = true; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 269 | break; |
Mark Mendell | 33ecf8d | 2014-06-06 15:19:45 -0400 | [diff] [blame] | 270 | case 0x63: |
Vladimir Kostyukov | ec95f72 | 2014-07-23 12:10:07 +0700 | [diff] [blame] | 271 | if ((rex & REX_W) != 0) { |
Mark Mendell | 33ecf8d | 2014-06-06 15:19:45 -0400 | [diff] [blame] | 272 | opcode << "movsxd"; |
| 273 | has_modrm = true; |
| 274 | load = true; |
| 275 | } else { |
| 276 | // In 32-bit mode (!supports_rex_) this is ARPL, with no REX prefix the functionality is the |
| 277 | // same as 'mov' but the use of the instruction is discouraged. |
| 278 | opcode << StringPrintf("unknown opcode '%02X'", *instr); |
| 279 | } |
| 280 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 281 | case 0x68: opcode << "push"; immediate_bytes = 4; break; |
Mark Mendell | d19b55a | 2013-12-12 09:55:34 -0800 | [diff] [blame] | 282 | 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] | 283 | case 0x6A: opcode << "push"; immediate_bytes = 1; break; |
Mark Mendell | d19b55a | 2013-12-12 09:55:34 -0800 | [diff] [blame] | 284 | 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] | 285 | case 0x70: case 0x71: case 0x72: case 0x73: case 0x74: case 0x75: case 0x76: case 0x77: |
| 286 | case 0x78: case 0x79: case 0x7A: case 0x7B: case 0x7C: case 0x7D: case 0x7E: case 0x7F: |
| 287 | static const char* condition_codes[] = |
Elliott Hughes | b25c3f6 | 2012-03-26 16:35:06 -0700 | [diff] [blame] | 288 | {"o", "no", "b/nae/c", "nb/ae/nc", "z/eq", "nz/ne", "be/na", "nbe/a", |
| 289 | "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] | 290 | }; |
| 291 | opcode << "j" << condition_codes[*instr & 0xF]; |
| 292 | branch_bytes = 1; |
| 293 | break; |
Razvan A Lupusoru | 99ad723 | 2014-02-25 17:41:08 -0800 | [diff] [blame] | 294 | case 0x86: case 0x87: |
| 295 | opcode << "xchg"; |
| 296 | store = true; |
| 297 | has_modrm = true; |
| 298 | byte_operand = (*instr == 0x86); |
| 299 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 300 | case 0x88: opcode << "mov"; store = true; has_modrm = true; byte_operand = true; break; |
| 301 | case 0x89: opcode << "mov"; store = true; has_modrm = true; break; |
| 302 | case 0x8A: opcode << "mov"; load = true; has_modrm = true; byte_operand = true; break; |
| 303 | case 0x8B: opcode << "mov"; load = true; has_modrm = true; break; |
| 304 | |
| 305 | case 0x0F: // 2 byte extended opcode |
| 306 | instr++; |
| 307 | switch (*instr) { |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 308 | case 0x10: case 0x11: |
| 309 | if (prefix[0] == 0xF2) { |
| 310 | opcode << "movsd"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 311 | 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] | 312 | } else if (prefix[0] == 0xF3) { |
| 313 | opcode << "movss"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 314 | 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] | 315 | } else if (prefix[2] == 0x66) { |
| 316 | opcode << "movupd"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 317 | 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] | 318 | } else { |
| 319 | opcode << "movups"; |
| 320 | } |
| 321 | has_modrm = true; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 322 | src_reg_file = dst_reg_file = SSE; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 323 | load = *instr == 0x10; |
| 324 | store = !load; |
| 325 | break; |
Razvan A Lupusoru | 2c498d1 | 2014-01-29 16:02:57 -0800 | [diff] [blame] | 326 | case 0x12: case 0x13: |
| 327 | if (prefix[2] == 0x66) { |
| 328 | opcode << "movlpd"; |
| 329 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 330 | } else if (prefix[0] == 0) { |
| 331 | opcode << "movlps"; |
| 332 | } |
| 333 | has_modrm = true; |
| 334 | src_reg_file = dst_reg_file = SSE; |
| 335 | load = *instr == 0x12; |
| 336 | store = !load; |
| 337 | break; |
| 338 | case 0x16: case 0x17: |
| 339 | if (prefix[2] == 0x66) { |
| 340 | opcode << "movhpd"; |
| 341 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 342 | } else if (prefix[0] == 0) { |
| 343 | opcode << "movhps"; |
| 344 | } |
| 345 | has_modrm = true; |
| 346 | src_reg_file = dst_reg_file = SSE; |
| 347 | load = *instr == 0x16; |
| 348 | store = !load; |
| 349 | break; |
| 350 | case 0x28: case 0x29: |
| 351 | if (prefix[2] == 0x66) { |
| 352 | opcode << "movapd"; |
| 353 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 354 | } else if (prefix[0] == 0) { |
| 355 | opcode << "movaps"; |
| 356 | } |
| 357 | has_modrm = true; |
| 358 | src_reg_file = dst_reg_file = SSE; |
| 359 | load = *instr == 0x28; |
| 360 | store = !load; |
| 361 | break; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 362 | case 0x2A: |
| 363 | if (prefix[2] == 0x66) { |
| 364 | opcode << "cvtpi2pd"; |
| 365 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 366 | } else if (prefix[0] == 0xF2) { |
| 367 | opcode << "cvtsi2sd"; |
| 368 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 369 | } else if (prefix[0] == 0xF3) { |
| 370 | opcode << "cvtsi2ss"; |
| 371 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 372 | } else { |
| 373 | opcode << "cvtpi2ps"; |
| 374 | } |
| 375 | load = true; |
| 376 | has_modrm = true; |
| 377 | dst_reg_file = SSE; |
| 378 | break; |
| 379 | case 0x2C: |
| 380 | if (prefix[2] == 0x66) { |
| 381 | opcode << "cvttpd2pi"; |
| 382 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 383 | } else if (prefix[0] == 0xF2) { |
| 384 | opcode << "cvttsd2si"; |
| 385 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 386 | } else if (prefix[0] == 0xF3) { |
| 387 | opcode << "cvttss2si"; |
| 388 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 389 | } else { |
| 390 | opcode << "cvttps2pi"; |
| 391 | } |
| 392 | load = true; |
| 393 | has_modrm = true; |
| 394 | src_reg_file = SSE; |
| 395 | break; |
| 396 | case 0x2D: |
| 397 | if (prefix[2] == 0x66) { |
| 398 | opcode << "cvtpd2pi"; |
| 399 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 400 | } else if (prefix[0] == 0xF2) { |
| 401 | opcode << "cvtsd2si"; |
| 402 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 403 | } else if (prefix[0] == 0xF3) { |
| 404 | opcode << "cvtss2si"; |
| 405 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 406 | } else { |
| 407 | opcode << "cvtps2pi"; |
| 408 | } |
| 409 | load = true; |
| 410 | has_modrm = true; |
| 411 | src_reg_file = SSE; |
| 412 | break; |
| 413 | case 0x2E: |
| 414 | opcode << "u"; |
| 415 | // FALLTHROUGH |
| 416 | case 0x2F: |
| 417 | if (prefix[2] == 0x66) { |
| 418 | opcode << "comisd"; |
| 419 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 420 | } else { |
| 421 | opcode << "comiss"; |
| 422 | } |
| 423 | has_modrm = true; |
| 424 | load = true; |
| 425 | src_reg_file = dst_reg_file = SSE; |
| 426 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 427 | case 0x38: // 3 byte extended opcode |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 428 | instr++; |
| 429 | if (prefix[2] == 0x66) { |
| 430 | switch (*instr) { |
Udayan Banerji | 60bfe7b | 2014-07-08 19:59:43 -0700 | [diff] [blame] | 431 | case 0x01: |
| 432 | opcode << "phaddw"; |
| 433 | prefix[2] = 0; |
| 434 | has_modrm = true; |
| 435 | load = true; |
| 436 | src_reg_file = dst_reg_file = SSE; |
| 437 | break; |
| 438 | case 0x02: |
| 439 | opcode << "phaddd"; |
| 440 | prefix[2] = 0; |
| 441 | has_modrm = true; |
| 442 | load = true; |
| 443 | src_reg_file = dst_reg_file = SSE; |
| 444 | break; |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 445 | case 0x40: |
| 446 | opcode << "pmulld"; |
| 447 | prefix[2] = 0; |
| 448 | has_modrm = true; |
| 449 | load = true; |
| 450 | src_reg_file = dst_reg_file = SSE; |
| 451 | break; |
| 452 | default: |
| 453 | opcode << StringPrintf("unknown opcode '0F 38 %02X'", *instr); |
| 454 | } |
| 455 | } else { |
| 456 | opcode << StringPrintf("unknown opcode '0F 38 %02X'", *instr); |
| 457 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 458 | break; |
| 459 | case 0x3A: // 3 byte extended opcode |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 460 | instr++; |
| 461 | if (prefix[2] == 0x66) { |
| 462 | switch (*instr) { |
| 463 | case 0x14: |
| 464 | opcode << "pextrb"; |
| 465 | prefix[2] = 0; |
| 466 | has_modrm = true; |
| 467 | store = true; |
Udayan Banerji | 60bfe7b | 2014-07-08 19:59:43 -0700 | [diff] [blame] | 468 | src_reg_file = SSE; |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 469 | immediate_bytes = 1; |
| 470 | break; |
| 471 | case 0x16: |
| 472 | opcode << "pextrd"; |
| 473 | prefix[2] = 0; |
| 474 | has_modrm = true; |
| 475 | store = true; |
Udayan Banerji | 60bfe7b | 2014-07-08 19:59:43 -0700 | [diff] [blame] | 476 | src_reg_file = SSE; |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 477 | immediate_bytes = 1; |
| 478 | break; |
| 479 | default: |
| 480 | opcode << StringPrintf("unknown opcode '0F 3A %02X'", *instr); |
| 481 | } |
| 482 | } else { |
| 483 | opcode << StringPrintf("unknown opcode '0F 3A %02X'", *instr); |
| 484 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 485 | break; |
Razvan A Lupusoru | bd288c2 | 2013-12-20 17:27:23 -0800 | [diff] [blame] | 486 | case 0x40: case 0x41: case 0x42: case 0x43: case 0x44: case 0x45: case 0x46: case 0x47: |
| 487 | case 0x48: case 0x49: case 0x4A: case 0x4B: case 0x4C: case 0x4D: case 0x4E: case 0x4F: |
| 488 | opcode << "cmov" << condition_codes[*instr & 0xF]; |
| 489 | has_modrm = true; |
| 490 | load = true; |
| 491 | break; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 492 | case 0x50: case 0x51: case 0x52: case 0x53: case 0x54: case 0x55: case 0x56: case 0x57: |
| 493 | case 0x58: case 0x59: case 0x5C: case 0x5D: case 0x5E: case 0x5F: { |
| 494 | switch (*instr) { |
| 495 | case 0x50: opcode << "movmsk"; break; |
| 496 | case 0x51: opcode << "sqrt"; break; |
| 497 | case 0x52: opcode << "rsqrt"; break; |
| 498 | case 0x53: opcode << "rcp"; break; |
| 499 | case 0x54: opcode << "and"; break; |
| 500 | case 0x55: opcode << "andn"; break; |
| 501 | case 0x56: opcode << "or"; break; |
| 502 | case 0x57: opcode << "xor"; break; |
| 503 | case 0x58: opcode << "add"; break; |
| 504 | case 0x59: opcode << "mul"; break; |
| 505 | case 0x5C: opcode << "sub"; break; |
| 506 | case 0x5D: opcode << "min"; break; |
| 507 | case 0x5E: opcode << "div"; break; |
| 508 | case 0x5F: opcode << "max"; break; |
| 509 | default: LOG(FATAL) << "Unreachable"; |
| 510 | } |
| 511 | if (prefix[2] == 0x66) { |
| 512 | opcode << "pd"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 513 | 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] | 514 | } else if (prefix[0] == 0xF2) { |
| 515 | opcode << "sd"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 516 | 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] | 517 | } else if (prefix[0] == 0xF3) { |
| 518 | opcode << "ss"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 519 | 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] | 520 | } else { |
| 521 | opcode << "ps"; |
| 522 | } |
| 523 | load = true; |
| 524 | has_modrm = true; |
| 525 | src_reg_file = dst_reg_file = SSE; |
| 526 | break; |
| 527 | } |
| 528 | case 0x5A: |
| 529 | if (prefix[2] == 0x66) { |
| 530 | opcode << "cvtpd2ps"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 531 | 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] | 532 | } else if (prefix[0] == 0xF2) { |
| 533 | opcode << "cvtsd2ss"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 534 | 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] | 535 | } else if (prefix[0] == 0xF3) { |
| 536 | opcode << "cvtss2sd"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 537 | 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] | 538 | } else { |
| 539 | opcode << "cvtps2pd"; |
| 540 | } |
| 541 | load = true; |
| 542 | has_modrm = true; |
| 543 | src_reg_file = dst_reg_file = SSE; |
| 544 | break; |
| 545 | case 0x5B: |
| 546 | if (prefix[2] == 0x66) { |
| 547 | opcode << "cvtps2dq"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 548 | 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] | 549 | } else if (prefix[0] == 0xF2) { |
| 550 | opcode << "bad opcode F2 0F 5B"; |
| 551 | } else if (prefix[0] == 0xF3) { |
| 552 | opcode << "cvttps2dq"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 553 | 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] | 554 | } else { |
| 555 | opcode << "cvtdq2ps"; |
| 556 | } |
| 557 | load = true; |
| 558 | has_modrm = true; |
| 559 | src_reg_file = dst_reg_file = SSE; |
| 560 | break; |
Razvan A Lupusoru | d3266bc | 2014-01-24 12:55:31 -0800 | [diff] [blame] | 561 | case 0x62: |
| 562 | if (prefix[2] == 0x66) { |
| 563 | src_reg_file = dst_reg_file = SSE; |
| 564 | prefix[2] = 0; // Clear prefix now. It has served its purpose as part of the opcode. |
| 565 | } else { |
| 566 | src_reg_file = dst_reg_file = MMX; |
| 567 | } |
| 568 | opcode << "punpckldq"; |
| 569 | load = true; |
| 570 | has_modrm = true; |
| 571 | break; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 572 | case 0x6E: |
| 573 | if (prefix[2] == 0x66) { |
| 574 | dst_reg_file = SSE; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 575 | 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] | 576 | } else { |
| 577 | dst_reg_file = MMX; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 578 | } |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 579 | opcode << "movd"; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 580 | load = true; |
| 581 | has_modrm = true; |
| 582 | break; |
| 583 | case 0x6F: |
| 584 | if (prefix[2] == 0x66) { |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 585 | src_reg_file = dst_reg_file = SSE; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 586 | opcode << "movdqa"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 587 | 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] | 588 | } else if (prefix[0] == 0xF3) { |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 589 | src_reg_file = dst_reg_file = SSE; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 590 | opcode << "movdqu"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 591 | 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] | 592 | } else { |
| 593 | dst_reg_file = MMX; |
| 594 | opcode << "movq"; |
| 595 | } |
| 596 | load = true; |
| 597 | has_modrm = true; |
| 598 | break; |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 599 | case 0x70: |
| 600 | if (prefix[2] == 0x66) { |
| 601 | opcode << "pshufd"; |
| 602 | prefix[2] = 0; |
| 603 | has_modrm = true; |
| 604 | store = true; |
| 605 | src_reg_file = dst_reg_file = SSE; |
| 606 | immediate_bytes = 1; |
| 607 | } else if (prefix[0] == 0xF2) { |
| 608 | opcode << "pshuflw"; |
| 609 | prefix[0] = 0; |
| 610 | has_modrm = true; |
| 611 | store = true; |
| 612 | src_reg_file = dst_reg_file = SSE; |
| 613 | immediate_bytes = 1; |
| 614 | } else { |
| 615 | opcode << StringPrintf("unknown opcode '0F %02X'", *instr); |
| 616 | } |
| 617 | break; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 618 | case 0x71: |
| 619 | if (prefix[2] == 0x66) { |
| 620 | dst_reg_file = SSE; |
| 621 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 622 | } else { |
| 623 | dst_reg_file = MMX; |
| 624 | } |
| 625 | static const char* x71_opcodes[] = {"unknown-71", "unknown-71", "psrlw", "unknown-71", "psraw", "unknown-71", "psllw", "unknown-71"}; |
| 626 | modrm_opcodes = x71_opcodes; |
| 627 | reg_is_opcode = true; |
| 628 | has_modrm = true; |
| 629 | store = true; |
| 630 | immediate_bytes = 1; |
| 631 | break; |
| 632 | case 0x72: |
| 633 | if (prefix[2] == 0x66) { |
| 634 | dst_reg_file = SSE; |
| 635 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 636 | } else { |
| 637 | dst_reg_file = MMX; |
| 638 | } |
| 639 | static const char* x72_opcodes[] = {"unknown-72", "unknown-72", "psrld", "unknown-72", "psrad", "unknown-72", "pslld", "unknown-72"}; |
| 640 | modrm_opcodes = x72_opcodes; |
| 641 | reg_is_opcode = true; |
| 642 | has_modrm = true; |
| 643 | store = true; |
| 644 | immediate_bytes = 1; |
| 645 | break; |
| 646 | case 0x73: |
| 647 | if (prefix[2] == 0x66) { |
| 648 | dst_reg_file = SSE; |
| 649 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 650 | } else { |
| 651 | dst_reg_file = MMX; |
| 652 | } |
| 653 | static const char* x73_opcodes[] = {"unknown-73", "unknown-73", "psrlq", "unknown-73", "unknown-73", "unknown-73", "psllq", "unknown-73"}; |
| 654 | modrm_opcodes = x73_opcodes; |
| 655 | reg_is_opcode = true; |
| 656 | has_modrm = true; |
| 657 | store = true; |
| 658 | immediate_bytes = 1; |
| 659 | break; |
Olivier Come | fb0fecf | 2014-06-20 11:46:16 +0200 | [diff] [blame] | 660 | case 0x7C: |
| 661 | if (prefix[0] == 0xF2) { |
| 662 | opcode << "haddps"; |
| 663 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 664 | } else if (prefix[2] == 0x66) { |
| 665 | opcode << "haddpd"; |
| 666 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 667 | } else { |
| 668 | opcode << StringPrintf("unknown opcode '0F %02X'", *instr); |
| 669 | break; |
| 670 | } |
| 671 | src_reg_file = dst_reg_file = SSE; |
| 672 | has_modrm = true; |
| 673 | load = true; |
| 674 | break; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 675 | case 0x7E: |
| 676 | if (prefix[2] == 0x66) { |
| 677 | src_reg_file = SSE; |
| 678 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 679 | } else { |
| 680 | src_reg_file = MMX; |
| 681 | } |
| 682 | opcode << "movd"; |
| 683 | has_modrm = true; |
| 684 | store = true; |
| 685 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 686 | case 0x80: case 0x81: case 0x82: case 0x83: case 0x84: case 0x85: case 0x86: case 0x87: |
| 687 | case 0x88: case 0x89: case 0x8A: case 0x8B: case 0x8C: case 0x8D: case 0x8E: case 0x8F: |
| 688 | opcode << "j" << condition_codes[*instr & 0xF]; |
| 689 | branch_bytes = 4; |
| 690 | break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 691 | case 0x90: case 0x91: case 0x92: case 0x93: case 0x94: case 0x95: case 0x96: case 0x97: |
| 692 | case 0x98: case 0x99: case 0x9A: case 0x9B: case 0x9C: case 0x9D: case 0x9E: case 0x9F: |
| 693 | opcode << "set" << condition_codes[*instr & 0xF]; |
| 694 | modrm_opcodes = NULL; |
| 695 | reg_is_opcode = true; |
| 696 | has_modrm = true; |
| 697 | store = true; |
| 698 | break; |
Mark Mendell | 4708dcd | 2014-01-22 09:05:18 -0800 | [diff] [blame] | 699 | case 0xA4: |
| 700 | opcode << "shld"; |
| 701 | has_modrm = true; |
| 702 | load = true; |
| 703 | immediate_bytes = 1; |
| 704 | break; |
| 705 | case 0xAC: |
| 706 | opcode << "shrd"; |
| 707 | has_modrm = true; |
| 708 | load = true; |
| 709 | immediate_bytes = 1; |
| 710 | break; |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 711 | case 0xAE: |
| 712 | if (prefix[0] == 0xF3) { |
Ian Rogers | 5e588b3 | 2013-02-21 15:05:09 -0800 | [diff] [blame] | 713 | 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] | 714 | static const char* xAE_opcodes[] = {"rdfsbase", "rdgsbase", "wrfsbase", "wrgsbase", "unknown-AE", "unknown-AE", "unknown-AE", "unknown-AE"}; |
| 715 | modrm_opcodes = xAE_opcodes; |
| 716 | reg_is_opcode = true; |
| 717 | has_modrm = true; |
| 718 | uint8_t reg_or_opcode = (instr[1] >> 3) & 7; |
| 719 | switch (reg_or_opcode) { |
| 720 | case 0: |
| 721 | prefix[1] = kFs; |
| 722 | load = true; |
| 723 | break; |
| 724 | case 1: |
| 725 | prefix[1] = kGs; |
| 726 | load = true; |
| 727 | break; |
| 728 | case 2: |
| 729 | prefix[1] = kFs; |
| 730 | store = true; |
| 731 | break; |
| 732 | case 3: |
| 733 | prefix[1] = kGs; |
| 734 | store = true; |
| 735 | break; |
| 736 | default: |
| 737 | load = true; |
| 738 | break; |
| 739 | } |
| 740 | } else { |
| 741 | static const char* xAE_opcodes[] = {"unknown-AE", "unknown-AE", "unknown-AE", "unknown-AE", "unknown-AE", "lfence", "mfence", "sfence"}; |
| 742 | modrm_opcodes = xAE_opcodes; |
| 743 | reg_is_opcode = true; |
| 744 | has_modrm = true; |
| 745 | load = true; |
| 746 | no_ops = true; |
| 747 | } |
| 748 | break; |
Mark Mendell | f723f0c | 2013-12-11 17:50:58 -0800 | [diff] [blame] | 749 | case 0xAF: opcode << "imul"; has_modrm = true; load = true; break; |
jeffhao | 8302576 | 2012-08-02 11:08:56 -0700 | [diff] [blame] | 750 | case 0xB1: opcode << "cmpxchg"; has_modrm = true; store = true; break; |
Serguei Katkov | 94f3eb0 | 2014-06-24 13:23:17 +0700 | [diff] [blame] | 751 | 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] | 752 | case 0xB7: opcode << "movzxw"; has_modrm = true; load = true; break; |
Serguei Katkov | 94f3eb0 | 2014-06-24 13:23:17 +0700 | [diff] [blame] | 753 | case 0xBE: opcode << "movsxb"; has_modrm = true; load = true; byte_second_operand = true; rex |= (rex == 0 ? 0 : 0b1000); break; |
jeffhao | 854029c | 2012-07-23 17:31:30 -0700 | [diff] [blame] | 754 | case 0xBF: opcode << "movsxw"; has_modrm = true; load = true; break; |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 755 | case 0xC5: |
| 756 | if (prefix[2] == 0x66) { |
| 757 | opcode << "pextrw"; |
| 758 | prefix[2] = 0; |
| 759 | has_modrm = true; |
| 760 | store = true; |
Udayan Banerji | 60bfe7b | 2014-07-08 19:59:43 -0700 | [diff] [blame] | 761 | src_reg_file = SSE; |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 762 | immediate_bytes = 1; |
| 763 | } else { |
| 764 | opcode << StringPrintf("unknown opcode '0F %02X'", *instr); |
| 765 | } |
| 766 | break; |
Olivier Come | fb0fecf | 2014-06-20 11:46:16 +0200 | [diff] [blame] | 767 | case 0xC6: |
| 768 | if (prefix[2] == 0x66) { |
| 769 | opcode << "shufpd"; |
| 770 | prefix[2] = 0; |
| 771 | } else { |
| 772 | opcode << "shufps"; |
| 773 | } |
| 774 | has_modrm = true; |
| 775 | store = true; |
| 776 | src_reg_file = dst_reg_file = SSE; |
| 777 | immediate_bytes = 1; |
| 778 | break; |
Vladimir Marko | 70b797d | 2013-12-03 15:25:24 +0000 | [diff] [blame] | 779 | case 0xC7: |
| 780 | 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" }; |
| 781 | modrm_opcodes = x0FxC7_opcodes; |
| 782 | has_modrm = true; |
| 783 | reg_is_opcode = true; |
| 784 | store = true; |
| 785 | break; |
Vladimir Marko | a8b4caf | 2013-10-24 15:08:57 +0100 | [diff] [blame] | 786 | case 0xC8: case 0xC9: case 0xCA: case 0xCB: case 0xCC: case 0xCD: case 0xCE: case 0xCF: |
| 787 | opcode << "bswap"; |
| 788 | reg_in_opcode = true; |
| 789 | break; |
Mark Mendell | fe94578 | 2014-05-22 09:52:36 -0400 | [diff] [blame] | 790 | case 0xDB: |
| 791 | if (prefix[2] == 0x66) { |
| 792 | src_reg_file = dst_reg_file = SSE; |
| 793 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 794 | } else { |
| 795 | src_reg_file = dst_reg_file = MMX; |
| 796 | } |
| 797 | opcode << "pand"; |
| 798 | prefix[2] = 0; |
| 799 | has_modrm = true; |
| 800 | load = true; |
| 801 | break; |
| 802 | case 0xD5: |
| 803 | if (prefix[2] == 0x66) { |
| 804 | opcode << "pmullw"; |
| 805 | prefix[2] = 0; |
| 806 | has_modrm = true; |
| 807 | load = true; |
| 808 | src_reg_file = dst_reg_file = SSE; |
| 809 | } else { |
| 810 | opcode << StringPrintf("unknown opcode '0F %02X'", *instr); |
| 811 | } |
| 812 | break; |
| 813 | case 0xEB: |
| 814 | if (prefix[2] == 0x66) { |
| 815 | src_reg_file = dst_reg_file = SSE; |
| 816 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 817 | } else { |
| 818 | src_reg_file = dst_reg_file = MMX; |
| 819 | } |
| 820 | opcode << "por"; |
| 821 | prefix[2] = 0; |
| 822 | has_modrm = true; |
| 823 | load = true; |
| 824 | break; |
| 825 | case 0xEF: |
| 826 | if (prefix[2] == 0x66) { |
| 827 | src_reg_file = dst_reg_file = SSE; |
| 828 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 829 | } else { |
| 830 | src_reg_file = dst_reg_file = MMX; |
| 831 | } |
| 832 | opcode << "pxor"; |
| 833 | prefix[2] = 0; |
| 834 | has_modrm = true; |
| 835 | load = true; |
| 836 | break; |
| 837 | case 0xF8: |
| 838 | if (prefix[2] == 0x66) { |
| 839 | src_reg_file = dst_reg_file = SSE; |
| 840 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 841 | } else { |
| 842 | src_reg_file = dst_reg_file = MMX; |
| 843 | } |
| 844 | opcode << "psubb"; |
| 845 | prefix[2] = 0; |
| 846 | has_modrm = true; |
| 847 | load = true; |
| 848 | break; |
| 849 | case 0xF9: |
| 850 | if (prefix[2] == 0x66) { |
| 851 | src_reg_file = dst_reg_file = SSE; |
| 852 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 853 | } else { |
| 854 | src_reg_file = dst_reg_file = MMX; |
| 855 | } |
| 856 | opcode << "psubw"; |
| 857 | prefix[2] = 0; |
| 858 | has_modrm = true; |
| 859 | load = true; |
| 860 | break; |
| 861 | case 0xFA: |
| 862 | if (prefix[2] == 0x66) { |
| 863 | src_reg_file = dst_reg_file = SSE; |
| 864 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 865 | } else { |
| 866 | src_reg_file = dst_reg_file = MMX; |
| 867 | } |
| 868 | opcode << "psubd"; |
| 869 | prefix[2] = 0; |
| 870 | has_modrm = true; |
| 871 | load = true; |
| 872 | break; |
| 873 | case 0xFC: |
| 874 | if (prefix[2] == 0x66) { |
| 875 | src_reg_file = dst_reg_file = SSE; |
| 876 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 877 | } else { |
| 878 | src_reg_file = dst_reg_file = MMX; |
| 879 | } |
| 880 | opcode << "paddb"; |
| 881 | prefix[2] = 0; |
| 882 | has_modrm = true; |
| 883 | load = true; |
| 884 | break; |
| 885 | case 0xFD: |
| 886 | if (prefix[2] == 0x66) { |
| 887 | src_reg_file = dst_reg_file = SSE; |
| 888 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 889 | } else { |
| 890 | src_reg_file = dst_reg_file = MMX; |
| 891 | } |
| 892 | opcode << "paddw"; |
| 893 | prefix[2] = 0; |
| 894 | has_modrm = true; |
| 895 | load = true; |
| 896 | break; |
| 897 | case 0xFE: |
| 898 | if (prefix[2] == 0x66) { |
| 899 | src_reg_file = dst_reg_file = SSE; |
| 900 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 901 | } else { |
| 902 | src_reg_file = dst_reg_file = MMX; |
| 903 | } |
| 904 | opcode << "paddd"; |
| 905 | prefix[2] = 0; |
| 906 | has_modrm = true; |
| 907 | load = true; |
| 908 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 909 | default: |
| 910 | opcode << StringPrintf("unknown opcode '0F %02X'", *instr); |
| 911 | break; |
| 912 | } |
| 913 | break; |
| 914 | case 0x80: case 0x81: case 0x82: case 0x83: |
| 915 | static const char* x80_opcodes[] = {"add", "or", "adc", "sbb", "and", "sub", "xor", "cmp"}; |
| 916 | modrm_opcodes = x80_opcodes; |
| 917 | has_modrm = true; |
| 918 | reg_is_opcode = true; |
| 919 | store = true; |
| 920 | byte_operand = (*instr & 1) == 0; |
| 921 | immediate_bytes = *instr == 0x81 ? 4 : 1; |
| 922 | break; |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 923 | case 0x84: case 0x85: |
| 924 | opcode << "test"; |
| 925 | has_modrm = true; |
| 926 | load = true; |
| 927 | byte_operand = (*instr & 1) == 0; |
| 928 | break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 929 | case 0x8D: |
| 930 | opcode << "lea"; |
| 931 | has_modrm = true; |
| 932 | load = true; |
| 933 | break; |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 934 | case 0x8F: |
| 935 | opcode << "pop"; |
| 936 | has_modrm = true; |
| 937 | reg_is_opcode = true; |
| 938 | store = true; |
| 939 | break; |
Mark Mendell | 2bf31e6 | 2014-01-23 12:13:40 -0800 | [diff] [blame] | 940 | case 0x99: |
| 941 | opcode << "cdq"; |
| 942 | break; |
Vladimir Kostyukov | d48b8a2 | 2014-06-24 16:40:19 +0700 | [diff] [blame] | 943 | case 0x9B: |
| 944 | if (instr[1] == 0xDF && instr[2] == 0xE0) { |
| 945 | opcode << "fstsw\tax"; |
| 946 | instr += 2; |
| 947 | } else { |
| 948 | opcode << StringPrintf("unknown opcode '%02X'", *instr); |
| 949 | } |
| 950 | break; |
Mark Mendell | 4028a6c | 2014-02-19 20:06:20 -0800 | [diff] [blame] | 951 | case 0xAF: |
| 952 | opcode << (prefix[2] == 0x66 ? "scasw" : "scasl"); |
| 953 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 954 | case 0xB0: case 0xB1: case 0xB2: case 0xB3: case 0xB4: case 0xB5: case 0xB6: case 0xB7: |
| 955 | opcode << "mov"; |
| 956 | immediate_bytes = 1; |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 957 | byte_operand = true; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 958 | reg_in_opcode = true; |
Vladimir Kostyukov | 79bb184 | 2014-07-01 18:28:43 +0700 | [diff] [blame] | 959 | byte_operand = true; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 960 | break; |
| 961 | 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] | 962 | if ((rex & REX_W) != 0) { |
Yixin Shou | 5192cbb | 2014-07-01 13:48:17 -0400 | [diff] [blame] | 963 | opcode << "movabsq"; |
| 964 | immediate_bytes = 8; |
| 965 | reg_in_opcode = true; |
| 966 | break; |
| 967 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 968 | opcode << "mov"; |
| 969 | immediate_bytes = 4; |
| 970 | reg_in_opcode = true; |
| 971 | break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 972 | case 0xC0: case 0xC1: |
jeffhao | e296248 | 2012-06-28 11:29:57 -0700 | [diff] [blame] | 973 | case 0xD0: case 0xD1: case 0xD2: case 0xD3: |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 974 | static const char* shift_opcodes[] = |
| 975 | {"rol", "ror", "rcl", "rcr", "shl", "shr", "unknown-shift", "sar"}; |
| 976 | modrm_opcodes = shift_opcodes; |
| 977 | has_modrm = true; |
| 978 | reg_is_opcode = true; |
| 979 | store = true; |
Elliott Hughes | 16b5c29 | 2012-04-16 20:37:16 -0700 | [diff] [blame] | 980 | immediate_bytes = ((*instr & 0xf0) == 0xc0) ? 1 : 0; |
jeffhao | e296248 | 2012-06-28 11:29:57 -0700 | [diff] [blame] | 981 | cx = (*instr == 0xD2) || (*instr == 0xD3); |
| 982 | byte_operand = (*instr == 0xC0); |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 983 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 984 | case 0xC3: opcode << "ret"; break; |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 985 | case 0xC6: |
| 986 | static const char* c6_opcodes[] = {"mov", "unknown-c6", "unknown-c6", "unknown-c6", "unknown-c6", "unknown-c6", "unknown-c6", "unknown-c6"}; |
| 987 | modrm_opcodes = c6_opcodes; |
| 988 | store = true; |
| 989 | immediate_bytes = 1; |
| 990 | has_modrm = true; |
| 991 | reg_is_opcode = true; |
| 992 | byte_operand = true; |
| 993 | break; |
Elliott Hughes | 0589ca9 | 2012-04-09 18:26:20 -0700 | [diff] [blame] | 994 | case 0xC7: |
| 995 | static const char* c7_opcodes[] = {"mov", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7"}; |
| 996 | modrm_opcodes = c7_opcodes; |
| 997 | store = true; |
| 998 | immediate_bytes = 4; |
| 999 | has_modrm = true; |
| 1000 | reg_is_opcode = true; |
| 1001 | break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 1002 | case 0xCC: opcode << "int 3"; break; |
Mark Mendell | d19b55a | 2013-12-12 09:55:34 -0800 | [diff] [blame] | 1003 | case 0xD9: |
Vladimir Kostyukov | d48b8a2 | 2014-06-24 16:40:19 +0700 | [diff] [blame] | 1004 | if (instr[1] == 0xF8) { |
| 1005 | opcode << "fprem"; |
| 1006 | instr++; |
| 1007 | } else { |
| 1008 | static const char* d9_opcodes[] = {"flds", "unknown-d9", "fsts", "fstps", "fldenv", "fldcw", |
| 1009 | "fnstenv", "fnstcw"}; |
| 1010 | modrm_opcodes = d9_opcodes; |
| 1011 | store = true; |
| 1012 | has_modrm = true; |
| 1013 | reg_is_opcode = true; |
| 1014 | } |
| 1015 | break; |
| 1016 | case 0xDA: |
| 1017 | if (instr[1] == 0xE9) { |
| 1018 | opcode << "fucompp"; |
| 1019 | instr++; |
| 1020 | } else { |
| 1021 | opcode << StringPrintf("unknown opcode '%02X'", *instr); |
| 1022 | } |
Mark Mendell | d19b55a | 2013-12-12 09:55:34 -0800 | [diff] [blame] | 1023 | break; |
Razvan A Lupusoru | 614c2b4 | 2014-01-28 17:05:21 -0800 | [diff] [blame] | 1024 | case 0xDB: |
| 1025 | static const char* db_opcodes[] = {"fildl", "unknown-db", "unknown-db", "unknown-db", "unknown-db", "unknown-db", "unknown-db", "unknown-db"}; |
| 1026 | modrm_opcodes = db_opcodes; |
| 1027 | load = true; |
| 1028 | has_modrm = true; |
| 1029 | reg_is_opcode = true; |
| 1030 | break; |
Mark Mendell | d19b55a | 2013-12-12 09:55:34 -0800 | [diff] [blame] | 1031 | case 0xDD: |
| 1032 | static const char* dd_opcodes[] = {"fldl", "fisttp", "fstl", "fstpl", "frstor", "unknown-dd", "fnsave", "fnstsw"}; |
| 1033 | modrm_opcodes = dd_opcodes; |
| 1034 | store = true; |
| 1035 | has_modrm = true; |
| 1036 | reg_is_opcode = true; |
| 1037 | break; |
Razvan A Lupusoru | 614c2b4 | 2014-01-28 17:05:21 -0800 | [diff] [blame] | 1038 | case 0xDF: |
| 1039 | static const char* df_opcodes[] = {"fild", "unknown-df", "unknown-df", "unknown-df", "unknown-df", "fildll", "unknown-df", "unknown-df"}; |
| 1040 | modrm_opcodes = df_opcodes; |
| 1041 | load = true; |
| 1042 | has_modrm = true; |
| 1043 | reg_is_opcode = true; |
| 1044 | break; |
Mark Mendell | 4028a6c | 2014-02-19 20:06:20 -0800 | [diff] [blame] | 1045 | case 0xE3: opcode << "jecxz"; branch_bytes = 1; break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 1046 | case 0xE8: opcode << "call"; branch_bytes = 4; break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1047 | case 0xE9: opcode << "jmp"; branch_bytes = 4; break; |
| 1048 | case 0xEB: opcode << "jmp"; branch_bytes = 1; break; |
jeffhao | 77ae36b | 2012-08-07 14:18:16 -0700 | [diff] [blame] | 1049 | case 0xF5: opcode << "cmc"; break; |
jeffhao | 174651d | 2012-04-19 15:27:22 -0700 | [diff] [blame] | 1050 | case 0xF6: case 0xF7: |
| 1051 | 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 /"}; |
| 1052 | modrm_opcodes = f7_opcodes; |
| 1053 | has_modrm = true; |
| 1054 | reg_is_opcode = true; |
| 1055 | store = true; |
| 1056 | immediate_bytes = ((instr[1] & 0x38) == 0) ? 1 : 0; |
| 1057 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1058 | case 0xFF: |
Vladimir Kostyukov | e443a80 | 2014-06-30 15:44:12 +0700 | [diff] [blame] | 1059 | { |
| 1060 | static const char* ff_opcodes[] = {"inc", "dec", "call", "call", "jmp", "jmp", "push", "unknown-ff"}; |
| 1061 | modrm_opcodes = ff_opcodes; |
| 1062 | has_modrm = true; |
| 1063 | reg_is_opcode = true; |
| 1064 | load = true; |
| 1065 | const uint8_t opcode_digit = (instr[1] >> 3) & 7; |
| 1066 | // 'call', 'jmp' and 'push' are target specific instructions |
| 1067 | if (opcode_digit == 2 || opcode_digit == 4 || opcode_digit == 6) { |
| 1068 | target_specific = true; |
| 1069 | } |
| 1070 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1071 | break; |
| 1072 | default: |
| 1073 | opcode << StringPrintf("unknown opcode '%02X'", *instr); |
| 1074 | break; |
| 1075 | } |
| 1076 | std::ostringstream args; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 1077 | // We force the REX prefix to be available for 64-bit target |
| 1078 | // in order to dump addr (base/index) registers correctly. |
| 1079 | uint8_t rex64 = supports_rex_ ? (rex | 0x40) : rex; |
Vladimir Kostyukov | e443a80 | 2014-06-30 15:44:12 +0700 | [diff] [blame] | 1080 | // REX.W should be forced for 64-target and target-specific instructions (i.e., push or pop). |
| 1081 | uint8_t rex_w = (supports_rex_ && target_specific) ? (rex | 0x48) : rex; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1082 | if (reg_in_opcode) { |
| 1083 | DCHECK(!has_modrm); |
Vladimir Kostyukov | 79bb184 | 2014-07-01 18:28:43 +0700 | [diff] [blame] | 1084 | DumpOpcodeReg(args, rex_w, *instr & 0x7, byte_operand, prefix[2]); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1085 | } |
| 1086 | instr++; |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 1087 | uint32_t address_bits = 0; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1088 | if (has_modrm) { |
| 1089 | uint8_t modrm = *instr; |
| 1090 | instr++; |
| 1091 | uint8_t mod = modrm >> 6; |
| 1092 | uint8_t reg_or_opcode = (modrm >> 3) & 7; |
| 1093 | uint8_t rm = modrm & 7; |
| 1094 | std::ostringstream address; |
Vladimir Kostyukov | e8861b3 | 2014-04-18 17:06:15 +0700 | [diff] [blame] | 1095 | if (mod == 0 && rm == 5) { |
| 1096 | if (!supports_rex_) { // Absolute address. |
| 1097 | address_bits = *reinterpret_cast<const uint32_t*>(instr); |
| 1098 | address << StringPrintf("[0x%x]", address_bits); |
| 1099 | } else { // 64-bit RIP relative addressing. |
| 1100 | address << StringPrintf("[RIP + 0x%x]", *reinterpret_cast<const uint32_t*>(instr)); |
| 1101 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1102 | instr += 4; |
| 1103 | } else if (rm == 4 && mod != 3) { // SIB |
| 1104 | uint8_t sib = *instr; |
| 1105 | instr++; |
Vladimir Kostyukov | e8861b3 | 2014-04-18 17:06:15 +0700 | [diff] [blame] | 1106 | uint8_t scale = (sib >> 6) & 3; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1107 | uint8_t index = (sib >> 3) & 7; |
| 1108 | uint8_t base = sib & 7; |
| 1109 | address << "["; |
| 1110 | if (base != 5 || mod != 0) { |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 1111 | DumpBaseReg(address, rex64, base); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1112 | if (index != 4) { |
| 1113 | address << " + "; |
| 1114 | } |
| 1115 | } |
| 1116 | if (index != 4) { |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 1117 | DumpIndexReg(address, rex64, index); |
Vladimir Kostyukov | e8861b3 | 2014-04-18 17:06:15 +0700 | [diff] [blame] | 1118 | if (scale != 0) { |
| 1119 | address << StringPrintf(" * %d", 1 << scale); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1120 | } |
| 1121 | } |
Vladimir Kostyukov | e8861b3 | 2014-04-18 17:06:15 +0700 | [diff] [blame] | 1122 | if (mod == 0) { |
| 1123 | if (base == 5) { |
| 1124 | if (index != 4) { |
| 1125 | address << StringPrintf(" + %d", *reinterpret_cast<const int32_t*>(instr)); |
| 1126 | } else { |
| 1127 | // 64-bit low 32-bit absolute address, redundant absolute address encoding on 32-bit. |
| 1128 | address_bits = *reinterpret_cast<const uint32_t*>(instr); |
| 1129 | address << StringPrintf("%d", address_bits); |
| 1130 | } |
| 1131 | instr += 4; |
| 1132 | } |
| 1133 | } else if (mod == 1) { |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1134 | address << StringPrintf(" + %d", *reinterpret_cast<const int8_t*>(instr)); |
| 1135 | instr++; |
| 1136 | } else if (mod == 2) { |
| 1137 | address << StringPrintf(" + %d", *reinterpret_cast<const int32_t*>(instr)); |
| 1138 | instr += 4; |
| 1139 | } |
| 1140 | address << "]"; |
| 1141 | } else { |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 1142 | if (mod == 3) { |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 1143 | if (!no_ops) { |
Serguei Katkov | 94f3eb0 | 2014-06-24 13:23:17 +0700 | [diff] [blame] | 1144 | DumpRmReg(address, rex_w, rm, byte_operand || byte_second_operand, |
| 1145 | prefix[2], load ? src_reg_file : dst_reg_file); |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 1146 | } |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 1147 | } else { |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1148 | address << "["; |
Vladimir Kostyukov | 122113a | 2014-05-30 17:56:23 +0700 | [diff] [blame] | 1149 | DumpBaseReg(address, rex64, rm); |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 1150 | if (mod == 1) { |
| 1151 | address << StringPrintf(" + %d", *reinterpret_cast<const int8_t*>(instr)); |
| 1152 | instr++; |
| 1153 | } else if (mod == 2) { |
| 1154 | address << StringPrintf(" + %d", *reinterpret_cast<const int32_t*>(instr)); |
| 1155 | instr += 4; |
| 1156 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1157 | address << "]"; |
| 1158 | } |
| 1159 | } |
| 1160 | |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 1161 | if (reg_is_opcode && modrm_opcodes != NULL) { |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1162 | opcode << modrm_opcodes[reg_or_opcode]; |
| 1163 | } |
Mark Mendell | a33720c | 2014-06-18 21:02:29 -0400 | [diff] [blame] | 1164 | |
| 1165 | // Add opcode suffixes to indicate size. |
| 1166 | if (byte_operand) { |
| 1167 | opcode << 'b'; |
| 1168 | } else if ((rex & REX_W) != 0) { |
| 1169 | opcode << 'q'; |
| 1170 | } else if (prefix[2] == 0x66) { |
| 1171 | opcode << 'w'; |
| 1172 | } |
| 1173 | |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1174 | if (load) { |
| 1175 | if (!reg_is_opcode) { |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 1176 | 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] | 1177 | args << ", "; |
| 1178 | } |
| 1179 | DumpSegmentOverride(args, prefix[1]); |
| 1180 | args << address.str(); |
| 1181 | } else { |
| 1182 | DCHECK(store); |
| 1183 | DumpSegmentOverride(args, prefix[1]); |
| 1184 | args << address.str(); |
| 1185 | if (!reg_is_opcode) { |
| 1186 | args << ", "; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 1187 | 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] | 1188 | } |
| 1189 | } |
| 1190 | } |
| 1191 | if (ax) { |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 1192 | // If this opcode implicitly uses ax, ax is always the first arg. |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 1193 | DumpReg(args, rex, 0 /* EAX */, byte_operand, prefix[2], GPR); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1194 | } |
jeffhao | e296248 | 2012-06-28 11:29:57 -0700 | [diff] [blame] | 1195 | if (cx) { |
| 1196 | args << ", "; |
| 1197 | DumpReg(args, rex, 1 /* ECX */, true, prefix[2], GPR); |
| 1198 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1199 | if (immediate_bytes > 0) { |
jeffhao | e296248 | 2012-06-28 11:29:57 -0700 | [diff] [blame] | 1200 | if (has_modrm || reg_in_opcode || ax || cx) { |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1201 | args << ", "; |
| 1202 | } |
| 1203 | if (immediate_bytes == 1) { |
| 1204 | args << StringPrintf("%d", *reinterpret_cast<const int8_t*>(instr)); |
| 1205 | instr++; |
Yixin Shou | 5192cbb | 2014-07-01 13:48:17 -0400 | [diff] [blame] | 1206 | } else if (immediate_bytes == 4) { |
Mark Mendell | 67d18be | 2014-05-30 15:05:09 -0400 | [diff] [blame] | 1207 | if (prefix[2] == 0x66) { // Operand size override from 32-bit to 16-bit. |
| 1208 | args << StringPrintf("%d", *reinterpret_cast<const int16_t*>(instr)); |
| 1209 | instr += 2; |
| 1210 | } else { |
| 1211 | args << StringPrintf("%d", *reinterpret_cast<const int32_t*>(instr)); |
| 1212 | instr += 4; |
| 1213 | } |
Yixin Shou | 5192cbb | 2014-07-01 13:48:17 -0400 | [diff] [blame] | 1214 | } else { |
| 1215 | CHECK_EQ(immediate_bytes, 8u); |
| 1216 | args << StringPrintf("%" PRId64, *reinterpret_cast<const int64_t*>(instr)); |
| 1217 | instr += 8; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1218 | } |
| 1219 | } else if (branch_bytes > 0) { |
| 1220 | DCHECK(!has_modrm); |
| 1221 | int32_t displacement; |
| 1222 | if (branch_bytes == 1) { |
| 1223 | displacement = *reinterpret_cast<const int8_t*>(instr); |
| 1224 | instr++; |
| 1225 | } else { |
| 1226 | CHECK_EQ(branch_bytes, 4u); |
| 1227 | displacement = *reinterpret_cast<const int32_t*>(instr); |
| 1228 | instr += 4; |
| 1229 | } |
Elliott Hughes | 14178a9 | 2012-04-16 17:24:51 -0700 | [diff] [blame] | 1230 | args << StringPrintf("%+d (%p)", displacement, instr + displacement); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1231 | } |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1232 | if (prefix[1] == kFs && !supports_rex_) { |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 1233 | args << " ; "; |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 1234 | Thread::DumpThreadOffset<4>(args, address_bits); |
| 1235 | } |
| 1236 | if (prefix[1] == kGs && supports_rex_) { |
| 1237 | args << " ; "; |
| 1238 | Thread::DumpThreadOffset<8>(args, address_bits); |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 1239 | } |
Elliott Hughes | 28fa76d | 2012-04-09 17:31:46 -0700 | [diff] [blame] | 1240 | std::stringstream hex; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1241 | for (size_t i = 0; begin_instr + i < instr; ++i) { |
Elliott Hughes | 28fa76d | 2012-04-09 17:31:46 -0700 | [diff] [blame] | 1242 | hex << StringPrintf("%02X", begin_instr[i]); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1243 | } |
Ian Rogers | 5e588b3 | 2013-02-21 15:05:09 -0800 | [diff] [blame] | 1244 | std::stringstream prefixed_opcode; |
| 1245 | switch (prefix[0]) { |
| 1246 | case 0xF0: prefixed_opcode << "lock "; break; |
| 1247 | case 0xF2: prefixed_opcode << "repne "; break; |
| 1248 | case 0xF3: prefixed_opcode << "repe "; break; |
| 1249 | case 0: break; |
| 1250 | default: LOG(FATAL) << "Unreachable"; |
| 1251 | } |
| 1252 | prefixed_opcode << opcode.str(); |
| 1253 | os << StringPrintf("%p: %22s \t%-7s ", begin_instr, hex.str().c_str(), |
| 1254 | prefixed_opcode.str().c_str()) |
| 1255 | << args.str() << '\n'; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1256 | return instr - begin_instr; |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 1257 | } // NOLINT(readability/fn_size) |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 1258 | |
| 1259 | } // namespace x86 |
| 1260 | } // namespace art |