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" |
Elliott Hughes | 0f3c553 | 2012-03-30 14:51:51 -0700 | [diff] [blame] | 24 | |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 25 | namespace art { |
| 26 | namespace x86 { |
| 27 | |
Brian Carlstrom | 1895ea3 | 2013-07-18 13:28:37 -0700 | [diff] [blame] | 28 | DisassemblerX86::DisassemblerX86() {} |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 29 | |
Ian Rogers | b23a772 | 2012-10-09 16:54:26 -0700 | [diff] [blame] | 30 | size_t DisassemblerX86::Dump(std::ostream& os, const uint8_t* begin) { |
| 31 | return DumpInstruction(os, begin); |
| 32 | } |
| 33 | |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 34 | void DisassemblerX86::Dump(std::ostream& os, const uint8_t* begin, const uint8_t* end) { |
| 35 | size_t length = 0; |
| 36 | for (const uint8_t* cur = begin; cur < end; cur += length) { |
| 37 | length = DumpInstruction(os, cur); |
| 38 | } |
| 39 | } |
| 40 | |
| 41 | static const char* gReg8Names[] = { "al", "cl", "dl", "bl", "ah", "ch", "dh", "bh" }; |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 42 | static const char* gReg16Names[] = { "ax", "cx", "dx", "bx", "sp", "bp", "si", "di" }; |
| 43 | static const char* gReg32Names[] = { "eax", "ecx", "edx", "ebx", "esp", "ebp", "esi", "edi" }; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 44 | |
| 45 | static void DumpReg0(std::ostream& os, uint8_t /*rex*/, size_t reg, |
| 46 | bool byte_operand, uint8_t size_override) { |
| 47 | DCHECK_LT(reg, 8u); |
| 48 | // TODO: combine rex into size |
| 49 | size_t size = byte_operand ? 1 : (size_override == 0x66 ? 2 : 4); |
| 50 | switch (size) { |
| 51 | case 1: os << gReg8Names[reg]; break; |
| 52 | case 2: os << gReg16Names[reg]; break; |
| 53 | case 4: os << gReg32Names[reg]; break; |
| 54 | default: LOG(FATAL) << "unexpected size " << size; |
| 55 | } |
| 56 | } |
| 57 | |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 58 | enum RegFile { GPR, MMX, SSE }; |
| 59 | |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 60 | static void DumpReg(std::ostream& os, uint8_t rex, uint8_t reg, |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 61 | bool byte_operand, uint8_t size_override, RegFile reg_file) { |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 62 | size_t reg_num = reg; // TODO: combine with REX.R on 64bit |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 63 | if (reg_file == GPR) { |
| 64 | DumpReg0(os, rex, reg_num, byte_operand, size_override); |
| 65 | } else if (reg_file == SSE) { |
| 66 | os << "xmm" << reg_num; |
| 67 | } else { |
| 68 | os << "mm" << reg_num; |
| 69 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 70 | } |
| 71 | |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 72 | static void DumpBaseReg(std::ostream& os, uint8_t rex, uint8_t reg) { |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 73 | size_t reg_num = reg; // TODO: combine with REX.B on 64bit |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 74 | DumpReg0(os, rex, reg_num, false, 0); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 75 | } |
| 76 | |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 77 | static void DumpIndexReg(std::ostream& os, uint8_t rex, uint8_t reg) { |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 78 | int reg_num = reg; // TODO: combine with REX.X on 64bit |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 79 | DumpReg0(os, rex, reg_num, false, 0); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 80 | } |
| 81 | |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 82 | enum SegmentPrefix { |
| 83 | kCs = 0x2e, |
| 84 | kSs = 0x36, |
| 85 | kDs = 0x3e, |
| 86 | kEs = 0x26, |
| 87 | kFs = 0x64, |
| 88 | kGs = 0x65, |
| 89 | }; |
| 90 | |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 91 | static void DumpSegmentOverride(std::ostream& os, uint8_t segment_prefix) { |
| 92 | switch (segment_prefix) { |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 93 | case kCs: os << "cs:"; break; |
| 94 | case kSs: os << "ss:"; break; |
| 95 | case kDs: os << "ds:"; break; |
| 96 | case kEs: os << "es:"; break; |
| 97 | case kFs: os << "fs:"; break; |
| 98 | case kGs: os << "gs:"; break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 99 | default: break; |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | size_t DisassemblerX86::DumpInstruction(std::ostream& os, const uint8_t* instr) { |
| 104 | const uint8_t* begin_instr = instr; |
| 105 | bool have_prefixes = true; |
| 106 | uint8_t prefix[4] = {0, 0, 0, 0}; |
| 107 | const char** modrm_opcodes = NULL; |
| 108 | do { |
| 109 | switch (*instr) { |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 110 | // Group 1 - lock and repeat prefixes: |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 111 | case 0xF0: |
| 112 | case 0xF2: |
| 113 | case 0xF3: |
| 114 | prefix[0] = *instr; |
| 115 | break; |
| 116 | // Group 2 - segment override prefixes: |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 117 | case kCs: |
| 118 | case kSs: |
| 119 | case kDs: |
| 120 | case kEs: |
| 121 | case kFs: |
| 122 | case kGs: |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 123 | prefix[1] = *instr; |
| 124 | break; |
| 125 | // Group 3 - operand size override: |
| 126 | case 0x66: |
| 127 | prefix[2] = *instr; |
| 128 | break; |
| 129 | // Group 4 - address size override: |
| 130 | case 0x67: |
| 131 | prefix[3] = *instr; |
| 132 | break; |
| 133 | default: |
| 134 | have_prefixes = false; |
| 135 | break; |
| 136 | } |
| 137 | if (have_prefixes) { |
| 138 | instr++; |
| 139 | } |
| 140 | } while (have_prefixes); |
| 141 | uint8_t rex = (*instr >= 0x40 && *instr <= 0x4F) ? *instr : 0; |
| 142 | bool has_modrm = false; |
| 143 | bool reg_is_opcode = false; |
| 144 | size_t immediate_bytes = 0; |
| 145 | size_t branch_bytes = 0; |
| 146 | std::ostringstream opcode; |
| 147 | bool store = false; // stores to memory (ie rm is on the left) |
| 148 | bool load = false; // loads from memory (ie rm is on the right) |
| 149 | bool byte_operand = false; |
| 150 | bool ax = false; // implicit use of ax |
jeffhao | e296248 | 2012-06-28 11:29:57 -0700 | [diff] [blame] | 151 | bool cx = false; // implicit use of cx |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 152 | bool reg_in_opcode = false; // low 3-bits of opcode encode register parameter |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 153 | bool no_ops = false; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 154 | RegFile src_reg_file = GPR; |
| 155 | RegFile dst_reg_file = GPR; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 156 | switch (*instr) { |
| 157 | #define DISASSEMBLER_ENTRY(opname, \ |
| 158 | rm8_r8, rm32_r32, \ |
| 159 | r8_rm8, r32_rm32, \ |
| 160 | ax8_i8, ax32_i32) \ |
| 161 | case rm8_r8: opcode << #opname; store = true; has_modrm = true; byte_operand = true; break; \ |
| 162 | case rm32_r32: opcode << #opname; store = true; has_modrm = true; break; \ |
| 163 | case r8_rm8: opcode << #opname; load = true; has_modrm = true; byte_operand = true; break; \ |
| 164 | case r32_rm32: opcode << #opname; load = true; has_modrm = true; break; \ |
| 165 | case ax8_i8: opcode << #opname; ax = true; immediate_bytes = 1; byte_operand = true; break; \ |
| 166 | case ax32_i32: opcode << #opname; ax = true; immediate_bytes = 4; break; |
| 167 | |
| 168 | DISASSEMBLER_ENTRY(add, |
| 169 | 0x00 /* RegMem8/Reg8 */, 0x01 /* RegMem32/Reg32 */, |
| 170 | 0x02 /* Reg8/RegMem8 */, 0x03 /* Reg32/RegMem32 */, |
| 171 | 0x04 /* Rax8/imm8 opcode */, 0x05 /* Rax32/imm32 */) |
| 172 | DISASSEMBLER_ENTRY(or, |
| 173 | 0x08 /* RegMem8/Reg8 */, 0x09 /* RegMem32/Reg32 */, |
| 174 | 0x0A /* Reg8/RegMem8 */, 0x0B /* Reg32/RegMem32 */, |
| 175 | 0x0C /* Rax8/imm8 opcode */, 0x0D /* Rax32/imm32 */) |
| 176 | DISASSEMBLER_ENTRY(adc, |
| 177 | 0x10 /* RegMem8/Reg8 */, 0x11 /* RegMem32/Reg32 */, |
| 178 | 0x12 /* Reg8/RegMem8 */, 0x13 /* Reg32/RegMem32 */, |
| 179 | 0x14 /* Rax8/imm8 opcode */, 0x15 /* Rax32/imm32 */) |
| 180 | DISASSEMBLER_ENTRY(sbb, |
| 181 | 0x18 /* RegMem8/Reg8 */, 0x19 /* RegMem32/Reg32 */, |
| 182 | 0x1A /* Reg8/RegMem8 */, 0x1B /* Reg32/RegMem32 */, |
| 183 | 0x1C /* Rax8/imm8 opcode */, 0x1D /* Rax32/imm32 */) |
| 184 | DISASSEMBLER_ENTRY(and, |
| 185 | 0x20 /* RegMem8/Reg8 */, 0x21 /* RegMem32/Reg32 */, |
| 186 | 0x22 /* Reg8/RegMem8 */, 0x23 /* Reg32/RegMem32 */, |
| 187 | 0x24 /* Rax8/imm8 opcode */, 0x25 /* Rax32/imm32 */) |
| 188 | DISASSEMBLER_ENTRY(sub, |
| 189 | 0x28 /* RegMem8/Reg8 */, 0x29 /* RegMem32/Reg32 */, |
| 190 | 0x2A /* Reg8/RegMem8 */, 0x2B /* Reg32/RegMem32 */, |
| 191 | 0x2C /* Rax8/imm8 opcode */, 0x2D /* Rax32/imm32 */) |
| 192 | DISASSEMBLER_ENTRY(xor, |
| 193 | 0x30 /* RegMem8/Reg8 */, 0x31 /* RegMem32/Reg32 */, |
| 194 | 0x32 /* Reg8/RegMem8 */, 0x33 /* Reg32/RegMem32 */, |
| 195 | 0x34 /* Rax8/imm8 opcode */, 0x35 /* Rax32/imm32 */) |
| 196 | DISASSEMBLER_ENTRY(cmp, |
| 197 | 0x38 /* RegMem8/Reg8 */, 0x39 /* RegMem32/Reg32 */, |
| 198 | 0x3A /* Reg8/RegMem8 */, 0x3B /* Reg32/RegMem32 */, |
| 199 | 0x3C /* Rax8/imm8 opcode */, 0x3D /* Rax32/imm32 */) |
| 200 | |
| 201 | #undef DISASSEMBLER_ENTRY |
| 202 | case 0x50: case 0x51: case 0x52: case 0x53: case 0x54: case 0x55: case 0x56: case 0x57: |
| 203 | opcode << "push"; |
| 204 | reg_in_opcode = true; |
| 205 | break; |
| 206 | case 0x58: case 0x59: case 0x5A: case 0x5B: case 0x5C: case 0x5D: case 0x5E: case 0x5F: |
| 207 | opcode << "pop"; |
| 208 | reg_in_opcode = true; |
| 209 | break; |
| 210 | case 0x68: opcode << "push"; immediate_bytes = 4; break; |
Mark Mendell | d19b55a | 2013-12-12 09:55:34 -0800 | [diff] [blame] | 211 | 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] | 212 | case 0x6A: opcode << "push"; immediate_bytes = 1; break; |
Mark Mendell | d19b55a | 2013-12-12 09:55:34 -0800 | [diff] [blame] | 213 | 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] | 214 | case 0x70: case 0x71: case 0x72: case 0x73: case 0x74: case 0x75: case 0x76: case 0x77: |
| 215 | case 0x78: case 0x79: case 0x7A: case 0x7B: case 0x7C: case 0x7D: case 0x7E: case 0x7F: |
| 216 | static const char* condition_codes[] = |
Elliott Hughes | b25c3f6 | 2012-03-26 16:35:06 -0700 | [diff] [blame] | 217 | {"o", "no", "b/nae/c", "nb/ae/nc", "z/eq", "nz/ne", "be/na", "nbe/a", |
| 218 | "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] | 219 | }; |
| 220 | opcode << "j" << condition_codes[*instr & 0xF]; |
| 221 | branch_bytes = 1; |
| 222 | break; |
| 223 | case 0x88: opcode << "mov"; store = true; has_modrm = true; byte_operand = true; break; |
| 224 | case 0x89: opcode << "mov"; store = true; has_modrm = true; break; |
| 225 | case 0x8A: opcode << "mov"; load = true; has_modrm = true; byte_operand = true; break; |
| 226 | case 0x8B: opcode << "mov"; load = true; has_modrm = true; break; |
| 227 | |
| 228 | case 0x0F: // 2 byte extended opcode |
| 229 | instr++; |
| 230 | switch (*instr) { |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 231 | case 0x10: case 0x11: |
| 232 | if (prefix[0] == 0xF2) { |
| 233 | opcode << "movsd"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 234 | 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] | 235 | } else if (prefix[0] == 0xF3) { |
| 236 | opcode << "movss"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 237 | 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] | 238 | } else if (prefix[2] == 0x66) { |
| 239 | opcode << "movupd"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 240 | 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] | 241 | } else { |
| 242 | opcode << "movups"; |
| 243 | } |
| 244 | has_modrm = true; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 245 | src_reg_file = dst_reg_file = SSE; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 246 | load = *instr == 0x10; |
| 247 | store = !load; |
| 248 | break; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 249 | case 0x2A: |
| 250 | if (prefix[2] == 0x66) { |
| 251 | opcode << "cvtpi2pd"; |
| 252 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 253 | } else if (prefix[0] == 0xF2) { |
| 254 | opcode << "cvtsi2sd"; |
| 255 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 256 | } else if (prefix[0] == 0xF3) { |
| 257 | opcode << "cvtsi2ss"; |
| 258 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 259 | } else { |
| 260 | opcode << "cvtpi2ps"; |
| 261 | } |
| 262 | load = true; |
| 263 | has_modrm = true; |
| 264 | dst_reg_file = SSE; |
| 265 | break; |
| 266 | case 0x2C: |
| 267 | if (prefix[2] == 0x66) { |
| 268 | opcode << "cvttpd2pi"; |
| 269 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 270 | } else if (prefix[0] == 0xF2) { |
| 271 | opcode << "cvttsd2si"; |
| 272 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 273 | } else if (prefix[0] == 0xF3) { |
| 274 | opcode << "cvttss2si"; |
| 275 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 276 | } else { |
| 277 | opcode << "cvttps2pi"; |
| 278 | } |
| 279 | load = true; |
| 280 | has_modrm = true; |
| 281 | src_reg_file = SSE; |
| 282 | break; |
| 283 | case 0x2D: |
| 284 | if (prefix[2] == 0x66) { |
| 285 | opcode << "cvtpd2pi"; |
| 286 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 287 | } else if (prefix[0] == 0xF2) { |
| 288 | opcode << "cvtsd2si"; |
| 289 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 290 | } else if (prefix[0] == 0xF3) { |
| 291 | opcode << "cvtss2si"; |
| 292 | prefix[0] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 293 | } else { |
| 294 | opcode << "cvtps2pi"; |
| 295 | } |
| 296 | load = true; |
| 297 | has_modrm = true; |
| 298 | src_reg_file = SSE; |
| 299 | break; |
| 300 | case 0x2E: |
| 301 | opcode << "u"; |
| 302 | // FALLTHROUGH |
| 303 | case 0x2F: |
| 304 | if (prefix[2] == 0x66) { |
| 305 | opcode << "comisd"; |
| 306 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 307 | } else { |
| 308 | opcode << "comiss"; |
| 309 | } |
| 310 | has_modrm = true; |
| 311 | load = true; |
| 312 | src_reg_file = dst_reg_file = SSE; |
| 313 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 314 | case 0x38: // 3 byte extended opcode |
| 315 | opcode << StringPrintf("unknown opcode '0F 38 %02X'", *instr); |
| 316 | break; |
| 317 | case 0x3A: // 3 byte extended opcode |
| 318 | opcode << StringPrintf("unknown opcode '0F 3A %02X'", *instr); |
| 319 | break; |
Razvan A Lupusoru | bd288c2 | 2013-12-20 17:27:23 -0800 | [diff] [blame] | 320 | case 0x40: case 0x41: case 0x42: case 0x43: case 0x44: case 0x45: case 0x46: case 0x47: |
| 321 | case 0x48: case 0x49: case 0x4A: case 0x4B: case 0x4C: case 0x4D: case 0x4E: case 0x4F: |
| 322 | opcode << "cmov" << condition_codes[*instr & 0xF]; |
| 323 | has_modrm = true; |
| 324 | load = true; |
| 325 | break; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 326 | case 0x50: case 0x51: case 0x52: case 0x53: case 0x54: case 0x55: case 0x56: case 0x57: |
| 327 | case 0x58: case 0x59: case 0x5C: case 0x5D: case 0x5E: case 0x5F: { |
| 328 | switch (*instr) { |
| 329 | case 0x50: opcode << "movmsk"; break; |
| 330 | case 0x51: opcode << "sqrt"; break; |
| 331 | case 0x52: opcode << "rsqrt"; break; |
| 332 | case 0x53: opcode << "rcp"; break; |
| 333 | case 0x54: opcode << "and"; break; |
| 334 | case 0x55: opcode << "andn"; break; |
| 335 | case 0x56: opcode << "or"; break; |
| 336 | case 0x57: opcode << "xor"; break; |
| 337 | case 0x58: opcode << "add"; break; |
| 338 | case 0x59: opcode << "mul"; break; |
| 339 | case 0x5C: opcode << "sub"; break; |
| 340 | case 0x5D: opcode << "min"; break; |
| 341 | case 0x5E: opcode << "div"; break; |
| 342 | case 0x5F: opcode << "max"; break; |
| 343 | default: LOG(FATAL) << "Unreachable"; |
| 344 | } |
| 345 | if (prefix[2] == 0x66) { |
| 346 | opcode << "pd"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 347 | 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] | 348 | } else if (prefix[0] == 0xF2) { |
| 349 | opcode << "sd"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 350 | 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] | 351 | } else if (prefix[0] == 0xF3) { |
| 352 | opcode << "ss"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 353 | 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] | 354 | } else { |
| 355 | opcode << "ps"; |
| 356 | } |
| 357 | load = true; |
| 358 | has_modrm = true; |
| 359 | src_reg_file = dst_reg_file = SSE; |
| 360 | break; |
| 361 | } |
| 362 | case 0x5A: |
| 363 | if (prefix[2] == 0x66) { |
| 364 | opcode << "cvtpd2ps"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 365 | 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] | 366 | } else if (prefix[0] == 0xF2) { |
| 367 | opcode << "cvtsd2ss"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 368 | 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] | 369 | } else if (prefix[0] == 0xF3) { |
| 370 | opcode << "cvtss2sd"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 371 | 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] | 372 | } else { |
| 373 | opcode << "cvtps2pd"; |
| 374 | } |
| 375 | load = true; |
| 376 | has_modrm = true; |
| 377 | src_reg_file = dst_reg_file = SSE; |
| 378 | break; |
| 379 | case 0x5B: |
| 380 | if (prefix[2] == 0x66) { |
| 381 | opcode << "cvtps2dq"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 382 | 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] | 383 | } else if (prefix[0] == 0xF2) { |
| 384 | opcode << "bad opcode F2 0F 5B"; |
| 385 | } else if (prefix[0] == 0xF3) { |
| 386 | opcode << "cvttps2dq"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 387 | 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] | 388 | } else { |
| 389 | opcode << "cvtdq2ps"; |
| 390 | } |
| 391 | load = true; |
| 392 | has_modrm = true; |
| 393 | src_reg_file = dst_reg_file = SSE; |
| 394 | break; |
| 395 | case 0x6E: |
| 396 | if (prefix[2] == 0x66) { |
| 397 | dst_reg_file = SSE; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 398 | 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] | 399 | } else { |
| 400 | dst_reg_file = MMX; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 401 | } |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 402 | opcode << "movd"; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 403 | load = true; |
| 404 | has_modrm = true; |
| 405 | break; |
| 406 | case 0x6F: |
| 407 | if (prefix[2] == 0x66) { |
| 408 | dst_reg_file = SSE; |
| 409 | opcode << "movdqa"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 410 | 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] | 411 | } else if (prefix[0] == 0xF3) { |
| 412 | dst_reg_file = SSE; |
| 413 | opcode << "movdqu"; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 414 | 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] | 415 | } else { |
| 416 | dst_reg_file = MMX; |
| 417 | opcode << "movq"; |
| 418 | } |
| 419 | load = true; |
| 420 | has_modrm = true; |
| 421 | break; |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 422 | case 0x71: |
| 423 | if (prefix[2] == 0x66) { |
| 424 | dst_reg_file = SSE; |
| 425 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 426 | } else { |
| 427 | dst_reg_file = MMX; |
| 428 | } |
| 429 | static const char* x71_opcodes[] = {"unknown-71", "unknown-71", "psrlw", "unknown-71", "psraw", "unknown-71", "psllw", "unknown-71"}; |
| 430 | modrm_opcodes = x71_opcodes; |
| 431 | reg_is_opcode = true; |
| 432 | has_modrm = true; |
| 433 | store = true; |
| 434 | immediate_bytes = 1; |
| 435 | break; |
| 436 | case 0x72: |
| 437 | if (prefix[2] == 0x66) { |
| 438 | dst_reg_file = SSE; |
| 439 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 440 | } else { |
| 441 | dst_reg_file = MMX; |
| 442 | } |
| 443 | static const char* x72_opcodes[] = {"unknown-72", "unknown-72", "psrld", "unknown-72", "psrad", "unknown-72", "pslld", "unknown-72"}; |
| 444 | modrm_opcodes = x72_opcodes; |
| 445 | reg_is_opcode = true; |
| 446 | has_modrm = true; |
| 447 | store = true; |
| 448 | immediate_bytes = 1; |
| 449 | break; |
| 450 | case 0x73: |
| 451 | if (prefix[2] == 0x66) { |
| 452 | dst_reg_file = SSE; |
| 453 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 454 | } else { |
| 455 | dst_reg_file = MMX; |
| 456 | } |
| 457 | static const char* x73_opcodes[] = {"unknown-73", "unknown-73", "psrlq", "unknown-73", "unknown-73", "unknown-73", "psllq", "unknown-73"}; |
| 458 | modrm_opcodes = x73_opcodes; |
| 459 | reg_is_opcode = true; |
| 460 | has_modrm = true; |
| 461 | store = true; |
| 462 | immediate_bytes = 1; |
| 463 | break; |
| 464 | case 0x7E: |
| 465 | if (prefix[2] == 0x66) { |
| 466 | src_reg_file = SSE; |
| 467 | prefix[2] = 0; // clear prefix now it's served its purpose as part of the opcode |
| 468 | } else { |
| 469 | src_reg_file = MMX; |
| 470 | } |
| 471 | opcode << "movd"; |
| 472 | has_modrm = true; |
| 473 | store = true; |
| 474 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 475 | case 0x80: case 0x81: case 0x82: case 0x83: case 0x84: case 0x85: case 0x86: case 0x87: |
| 476 | case 0x88: case 0x89: case 0x8A: case 0x8B: case 0x8C: case 0x8D: case 0x8E: case 0x8F: |
| 477 | opcode << "j" << condition_codes[*instr & 0xF]; |
| 478 | branch_bytes = 4; |
| 479 | break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 480 | case 0x90: case 0x91: case 0x92: case 0x93: case 0x94: case 0x95: case 0x96: case 0x97: |
| 481 | case 0x98: case 0x99: case 0x9A: case 0x9B: case 0x9C: case 0x9D: case 0x9E: case 0x9F: |
| 482 | opcode << "set" << condition_codes[*instr & 0xF]; |
| 483 | modrm_opcodes = NULL; |
| 484 | reg_is_opcode = true; |
| 485 | has_modrm = true; |
| 486 | store = true; |
| 487 | break; |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 488 | case 0xAE: |
| 489 | if (prefix[0] == 0xF3) { |
Ian Rogers | 5e588b3 | 2013-02-21 15:05:09 -0800 | [diff] [blame] | 490 | 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] | 491 | static const char* xAE_opcodes[] = {"rdfsbase", "rdgsbase", "wrfsbase", "wrgsbase", "unknown-AE", "unknown-AE", "unknown-AE", "unknown-AE"}; |
| 492 | modrm_opcodes = xAE_opcodes; |
| 493 | reg_is_opcode = true; |
| 494 | has_modrm = true; |
| 495 | uint8_t reg_or_opcode = (instr[1] >> 3) & 7; |
| 496 | switch (reg_or_opcode) { |
| 497 | case 0: |
| 498 | prefix[1] = kFs; |
| 499 | load = true; |
| 500 | break; |
| 501 | case 1: |
| 502 | prefix[1] = kGs; |
| 503 | load = true; |
| 504 | break; |
| 505 | case 2: |
| 506 | prefix[1] = kFs; |
| 507 | store = true; |
| 508 | break; |
| 509 | case 3: |
| 510 | prefix[1] = kGs; |
| 511 | store = true; |
| 512 | break; |
| 513 | default: |
| 514 | load = true; |
| 515 | break; |
| 516 | } |
| 517 | } else { |
| 518 | static const char* xAE_opcodes[] = {"unknown-AE", "unknown-AE", "unknown-AE", "unknown-AE", "unknown-AE", "lfence", "mfence", "sfence"}; |
| 519 | modrm_opcodes = xAE_opcodes; |
| 520 | reg_is_opcode = true; |
| 521 | has_modrm = true; |
| 522 | load = true; |
| 523 | no_ops = true; |
| 524 | } |
| 525 | break; |
Mark Mendell | f723f0c | 2013-12-11 17:50:58 -0800 | [diff] [blame] | 526 | case 0xAF: opcode << "imul"; has_modrm = true; load = true; break; |
jeffhao | 8302576 | 2012-08-02 11:08:56 -0700 | [diff] [blame] | 527 | case 0xB1: opcode << "cmpxchg"; has_modrm = true; store = true; break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 528 | case 0xB6: opcode << "movzxb"; has_modrm = true; load = true; break; |
| 529 | case 0xB7: opcode << "movzxw"; has_modrm = true; load = true; break; |
jeffhao | 854029c | 2012-07-23 17:31:30 -0700 | [diff] [blame] | 530 | case 0xBE: opcode << "movsxb"; has_modrm = true; load = true; break; |
| 531 | case 0xBF: opcode << "movsxw"; has_modrm = true; load = true; break; |
Vladimir Marko | 70b797d | 2013-12-03 15:25:24 +0000 | [diff] [blame] | 532 | case 0xC7: |
| 533 | 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" }; |
| 534 | modrm_opcodes = x0FxC7_opcodes; |
| 535 | has_modrm = true; |
| 536 | reg_is_opcode = true; |
| 537 | store = true; |
| 538 | break; |
Vladimir Marko | a8b4caf | 2013-10-24 15:08:57 +0100 | [diff] [blame] | 539 | case 0xC8: case 0xC9: case 0xCA: case 0xCB: case 0xCC: case 0xCD: case 0xCE: case 0xCF: |
| 540 | opcode << "bswap"; |
| 541 | reg_in_opcode = true; |
| 542 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 543 | default: |
| 544 | opcode << StringPrintf("unknown opcode '0F %02X'", *instr); |
| 545 | break; |
| 546 | } |
| 547 | break; |
| 548 | case 0x80: case 0x81: case 0x82: case 0x83: |
| 549 | static const char* x80_opcodes[] = {"add", "or", "adc", "sbb", "and", "sub", "xor", "cmp"}; |
| 550 | modrm_opcodes = x80_opcodes; |
| 551 | has_modrm = true; |
| 552 | reg_is_opcode = true; |
| 553 | store = true; |
| 554 | byte_operand = (*instr & 1) == 0; |
| 555 | immediate_bytes = *instr == 0x81 ? 4 : 1; |
| 556 | break; |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 557 | case 0x84: case 0x85: |
| 558 | opcode << "test"; |
| 559 | has_modrm = true; |
| 560 | load = true; |
| 561 | byte_operand = (*instr & 1) == 0; |
| 562 | break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 563 | case 0x8D: |
| 564 | opcode << "lea"; |
| 565 | has_modrm = true; |
| 566 | load = true; |
| 567 | break; |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 568 | case 0x8F: |
| 569 | opcode << "pop"; |
| 570 | has_modrm = true; |
| 571 | reg_is_opcode = true; |
| 572 | store = true; |
| 573 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 574 | case 0xB0: case 0xB1: case 0xB2: case 0xB3: case 0xB4: case 0xB5: case 0xB6: case 0xB7: |
| 575 | opcode << "mov"; |
| 576 | immediate_bytes = 1; |
| 577 | reg_in_opcode = true; |
| 578 | break; |
| 579 | case 0xB8: case 0xB9: case 0xBA: case 0xBB: case 0xBC: case 0xBD: case 0xBE: case 0xBF: |
| 580 | opcode << "mov"; |
| 581 | immediate_bytes = 4; |
| 582 | reg_in_opcode = true; |
| 583 | break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 584 | case 0xC0: case 0xC1: |
jeffhao | e296248 | 2012-06-28 11:29:57 -0700 | [diff] [blame] | 585 | case 0xD0: case 0xD1: case 0xD2: case 0xD3: |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 586 | static const char* shift_opcodes[] = |
| 587 | {"rol", "ror", "rcl", "rcr", "shl", "shr", "unknown-shift", "sar"}; |
| 588 | modrm_opcodes = shift_opcodes; |
| 589 | has_modrm = true; |
| 590 | reg_is_opcode = true; |
| 591 | store = true; |
Elliott Hughes | 16b5c29 | 2012-04-16 20:37:16 -0700 | [diff] [blame] | 592 | immediate_bytes = ((*instr & 0xf0) == 0xc0) ? 1 : 0; |
jeffhao | e296248 | 2012-06-28 11:29:57 -0700 | [diff] [blame] | 593 | cx = (*instr == 0xD2) || (*instr == 0xD3); |
| 594 | byte_operand = (*instr == 0xC0); |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 595 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 596 | case 0xC3: opcode << "ret"; break; |
Elliott Hughes | 0589ca9 | 2012-04-09 18:26:20 -0700 | [diff] [blame] | 597 | case 0xC7: |
| 598 | static const char* c7_opcodes[] = {"mov", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7", "unknown-c7"}; |
| 599 | modrm_opcodes = c7_opcodes; |
| 600 | store = true; |
| 601 | immediate_bytes = 4; |
| 602 | has_modrm = true; |
| 603 | reg_is_opcode = true; |
| 604 | break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 605 | case 0xCC: opcode << "int 3"; break; |
Mark Mendell | d19b55a | 2013-12-12 09:55:34 -0800 | [diff] [blame] | 606 | case 0xD9: |
| 607 | static const char* d9_opcodes[] = {"flds", "unknown-d9", "fsts", "fstps", "fldenv", "fldcw", "fnstenv", "fnstcw"}; |
| 608 | modrm_opcodes = d9_opcodes; |
| 609 | store = true; |
| 610 | has_modrm = true; |
| 611 | reg_is_opcode = true; |
| 612 | break; |
| 613 | case 0xDD: |
| 614 | static const char* dd_opcodes[] = {"fldl", "fisttp", "fstl", "fstpl", "frstor", "unknown-dd", "fnsave", "fnstsw"}; |
| 615 | modrm_opcodes = dd_opcodes; |
| 616 | store = true; |
| 617 | has_modrm = true; |
| 618 | reg_is_opcode = true; |
| 619 | break; |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 620 | case 0xE8: opcode << "call"; branch_bytes = 4; break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 621 | case 0xE9: opcode << "jmp"; branch_bytes = 4; break; |
| 622 | case 0xEB: opcode << "jmp"; branch_bytes = 1; break; |
jeffhao | 77ae36b | 2012-08-07 14:18:16 -0700 | [diff] [blame] | 623 | case 0xF5: opcode << "cmc"; break; |
jeffhao | 174651d | 2012-04-19 15:27:22 -0700 | [diff] [blame] | 624 | case 0xF6: case 0xF7: |
| 625 | 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 /"}; |
| 626 | modrm_opcodes = f7_opcodes; |
| 627 | has_modrm = true; |
| 628 | reg_is_opcode = true; |
| 629 | store = true; |
| 630 | immediate_bytes = ((instr[1] & 0x38) == 0) ? 1 : 0; |
| 631 | break; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 632 | case 0xFF: |
| 633 | static const char* ff_opcodes[] = {"inc", "dec", "call", "call", "jmp", "jmp", "push", "unknown-ff"}; |
| 634 | modrm_opcodes = ff_opcodes; |
| 635 | has_modrm = true; |
| 636 | reg_is_opcode = true; |
| 637 | load = true; |
| 638 | break; |
| 639 | default: |
| 640 | opcode << StringPrintf("unknown opcode '%02X'", *instr); |
| 641 | break; |
| 642 | } |
| 643 | std::ostringstream args; |
| 644 | if (reg_in_opcode) { |
| 645 | DCHECK(!has_modrm); |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 646 | DumpReg(args, rex, *instr & 0x7, false, prefix[2], GPR); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 647 | } |
| 648 | instr++; |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 649 | uint32_t address_bits = 0; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 650 | if (has_modrm) { |
| 651 | uint8_t modrm = *instr; |
| 652 | instr++; |
| 653 | uint8_t mod = modrm >> 6; |
| 654 | uint8_t reg_or_opcode = (modrm >> 3) & 7; |
| 655 | uint8_t rm = modrm & 7; |
| 656 | std::ostringstream address; |
| 657 | if (mod == 0 && rm == 5) { // fixed address |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 658 | address_bits = *reinterpret_cast<const uint32_t*>(instr); |
| 659 | address << StringPrintf("[0x%x]", address_bits); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 660 | instr += 4; |
| 661 | } else if (rm == 4 && mod != 3) { // SIB |
| 662 | uint8_t sib = *instr; |
| 663 | instr++; |
| 664 | uint8_t ss = (sib >> 6) & 3; |
| 665 | uint8_t index = (sib >> 3) & 7; |
| 666 | uint8_t base = sib & 7; |
| 667 | address << "["; |
| 668 | if (base != 5 || mod != 0) { |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 669 | DumpBaseReg(address, rex, base); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 670 | if (index != 4) { |
| 671 | address << " + "; |
| 672 | } |
| 673 | } |
| 674 | if (index != 4) { |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 675 | DumpIndexReg(address, rex, index); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 676 | if (ss != 0) { |
| 677 | address << StringPrintf(" * %d", 1 << ss); |
| 678 | } |
| 679 | } |
| 680 | if (mod == 1) { |
| 681 | address << StringPrintf(" + %d", *reinterpret_cast<const int8_t*>(instr)); |
| 682 | instr++; |
| 683 | } else if (mod == 2) { |
| 684 | address << StringPrintf(" + %d", *reinterpret_cast<const int32_t*>(instr)); |
| 685 | instr += 4; |
| 686 | } |
| 687 | address << "]"; |
| 688 | } else { |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 689 | if (mod == 3) { |
jeffhao | 703f2cd | 2012-07-13 17:25:52 -0700 | [diff] [blame] | 690 | if (!no_ops) { |
| 691 | DumpReg(address, rex, rm, byte_operand, prefix[2], load ? src_reg_file : dst_reg_file); |
| 692 | } |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 693 | } else { |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 694 | address << "["; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 695 | DumpBaseReg(address, rex, rm); |
| 696 | if (mod == 1) { |
| 697 | address << StringPrintf(" + %d", *reinterpret_cast<const int8_t*>(instr)); |
| 698 | instr++; |
| 699 | } else if (mod == 2) { |
| 700 | address << StringPrintf(" + %d", *reinterpret_cast<const int32_t*>(instr)); |
| 701 | instr += 4; |
| 702 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 703 | address << "]"; |
| 704 | } |
| 705 | } |
| 706 | |
Ian Rogers | 7caad77 | 2012-03-30 01:07:54 -0700 | [diff] [blame] | 707 | if (reg_is_opcode && modrm_opcodes != NULL) { |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 708 | opcode << modrm_opcodes[reg_or_opcode]; |
| 709 | } |
| 710 | if (load) { |
| 711 | if (!reg_is_opcode) { |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 712 | 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] | 713 | args << ", "; |
| 714 | } |
| 715 | DumpSegmentOverride(args, prefix[1]); |
| 716 | args << address.str(); |
| 717 | } else { |
| 718 | DCHECK(store); |
| 719 | DumpSegmentOverride(args, prefix[1]); |
| 720 | args << address.str(); |
| 721 | if (!reg_is_opcode) { |
| 722 | args << ", "; |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 723 | 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] | 724 | } |
| 725 | } |
| 726 | } |
| 727 | if (ax) { |
jeffhao | fdffdf8 | 2012-07-11 16:08:43 -0700 | [diff] [blame] | 728 | // If this opcode implicitly uses ax, ax is always the first arg. |
Ian Rogers | bf98980 | 2012-04-16 16:07:49 -0700 | [diff] [blame] | 729 | DumpReg(args, rex, 0 /* EAX */, byte_operand, prefix[2], GPR); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 730 | } |
jeffhao | e296248 | 2012-06-28 11:29:57 -0700 | [diff] [blame] | 731 | if (cx) { |
| 732 | args << ", "; |
| 733 | DumpReg(args, rex, 1 /* ECX */, true, prefix[2], GPR); |
| 734 | } |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 735 | if (immediate_bytes > 0) { |
jeffhao | e296248 | 2012-06-28 11:29:57 -0700 | [diff] [blame] | 736 | if (has_modrm || reg_in_opcode || ax || cx) { |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 737 | args << ", "; |
| 738 | } |
| 739 | if (immediate_bytes == 1) { |
| 740 | args << StringPrintf("%d", *reinterpret_cast<const int8_t*>(instr)); |
| 741 | instr++; |
| 742 | } else { |
| 743 | CHECK_EQ(immediate_bytes, 4u); |
| 744 | args << StringPrintf("%d", *reinterpret_cast<const int32_t*>(instr)); |
| 745 | instr += 4; |
| 746 | } |
| 747 | } else if (branch_bytes > 0) { |
| 748 | DCHECK(!has_modrm); |
| 749 | int32_t displacement; |
| 750 | if (branch_bytes == 1) { |
| 751 | displacement = *reinterpret_cast<const int8_t*>(instr); |
| 752 | instr++; |
| 753 | } else { |
| 754 | CHECK_EQ(branch_bytes, 4u); |
| 755 | displacement = *reinterpret_cast<const int32_t*>(instr); |
| 756 | instr += 4; |
| 757 | } |
Elliott Hughes | 14178a9 | 2012-04-16 17:24:51 -0700 | [diff] [blame] | 758 | args << StringPrintf("%+d (%p)", displacement, instr + displacement); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 759 | } |
Elliott Hughes | 92301d9 | 2012-04-10 15:57:52 -0700 | [diff] [blame] | 760 | if (prefix[1] == kFs) { |
| 761 | args << " ; "; |
| 762 | Thread::DumpThreadOffset(args, address_bits, 4); |
| 763 | } |
Elliott Hughes | 28fa76d | 2012-04-09 17:31:46 -0700 | [diff] [blame] | 764 | std::stringstream hex; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 765 | for (size_t i = 0; begin_instr + i < instr; ++i) { |
Elliott Hughes | 28fa76d | 2012-04-09 17:31:46 -0700 | [diff] [blame] | 766 | hex << StringPrintf("%02X", begin_instr[i]); |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 767 | } |
Ian Rogers | 5e588b3 | 2013-02-21 15:05:09 -0800 | [diff] [blame] | 768 | std::stringstream prefixed_opcode; |
| 769 | switch (prefix[0]) { |
| 770 | case 0xF0: prefixed_opcode << "lock "; break; |
| 771 | case 0xF2: prefixed_opcode << "repne "; break; |
| 772 | case 0xF3: prefixed_opcode << "repe "; break; |
| 773 | case 0: break; |
| 774 | default: LOG(FATAL) << "Unreachable"; |
| 775 | } |
| 776 | prefixed_opcode << opcode.str(); |
| 777 | os << StringPrintf("%p: %22s \t%-7s ", begin_instr, hex.str().c_str(), |
| 778 | prefixed_opcode.str().c_str()) |
| 779 | << args.str() << '\n'; |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 780 | return instr - begin_instr; |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 781 | } // NOLINT(readability/fn_size) |
Ian Rogers | 706a10e | 2012-03-23 17:00:55 -0700 | [diff] [blame] | 782 | |
| 783 | } // namespace x86 |
| 784 | } // namespace art |