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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/disassembler.h" | 5 #include "vm/disassembler.h" |
6 | 6 |
7 #include "vm/globals.h" // Needed here to get TARGET_ARCH_IA32. | 7 #include "vm/globals.h" // Needed here to get TARGET_ARCH_IA32. |
8 #if defined(TARGET_ARCH_IA32) | 8 #if defined(TARGET_ARCH_IA32) |
9 #include "platform/utils.h" | 9 #include "platform/utils.h" |
10 #include "vm/allocation.h" | 10 #include "vm/allocation.h" |
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230 case 0x31: return "rdtsc"; | 230 case 0x31: return "rdtsc"; |
231 case 0xBE: return "movsx_b"; | 231 case 0xBE: return "movsx_b"; |
232 case 0xBF: return "movsx_w"; | 232 case 0xBF: return "movsx_w"; |
233 case 0xB6: return "movzx_b"; | 233 case 0xB6: return "movzx_b"; |
234 case 0xB7: return "movzx_w"; | 234 case 0xB7: return "movzx_w"; |
235 case 0xAF: return "imul"; | 235 case 0xAF: return "imul"; |
236 case 0xA5: return "shld"; | 236 case 0xA5: return "shld"; |
237 case 0xAD: return "shrd"; | 237 case 0xAD: return "shrd"; |
238 case 0xAB: return "bts"; | 238 case 0xAB: return "bts"; |
239 case 0xB1: return "cmpxchg"; | 239 case 0xB1: return "cmpxchg"; |
| 240 case 0x50: return "movmskps"; |
| 241 case 0x51: return "sqrtps"; |
| 242 case 0x52: return "rqstps"; |
| 243 case 0x53: return "rcpps"; |
| 244 case 0x54: return "andps"; |
| 245 case 0x56: return "orps"; |
240 case 0x57: return "xorps"; | 246 case 0x57: return "xorps"; |
| 247 case 0x58: return "addps"; |
| 248 case 0x59: return "mulps"; |
| 249 case 0x5C: return "subps"; |
| 250 case 0x5D: return "minps"; |
| 251 case 0x5E: return "divps"; |
| 252 case 0x5F: return "maxps"; |
241 case 0x28: return "movaps"; | 253 case 0x28: return "movaps"; |
| 254 case 0x10: return "movups"; |
| 255 case 0x11: return "movups"; |
242 default: return NULL; | 256 default: return NULL; |
243 } | 257 } |
244 } | 258 } |
245 | 259 |
246 | 260 |
247 // The implementation of x86 decoding based on the above tables. | 261 // The implementation of x86 decoding based on the above tables. |
248 class X86Decoder : public ValueObject { | 262 class X86Decoder : public ValueObject { |
249 public: | 263 public: |
250 X86Decoder(char* buffer, intptr_t buffer_size) | 264 X86Decoder(char* buffer, intptr_t buffer_size) |
251 : buffer_(buffer), | 265 : buffer_(buffer), |
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279 const char* GetBranchPrefix(uint8_t** data); | 293 const char* GetBranchPrefix(uint8_t** data); |
280 | 294 |
281 bool DecodeInstructionType(const InstructionDesc& idesc, | 295 bool DecodeInstructionType(const InstructionDesc& idesc, |
282 const char* branch_hint, | 296 const char* branch_hint, |
283 uint8_t** data); | 297 uint8_t** data); |
284 | 298 |
285 // Printing of common values. | 299 // Printing of common values. |
286 void PrintCPURegister(int reg); | 300 void PrintCPURegister(int reg); |
287 void PrintCPUByteRegister(int reg); | 301 void PrintCPUByteRegister(int reg); |
288 void PrintXmmRegister(int reg); | 302 void PrintXmmRegister(int reg); |
| 303 void PrintXmmComparison(int comparison); |
289 void PrintAddress(uword addr); | 304 void PrintAddress(uword addr); |
290 | 305 |
291 typedef void (X86Decoder::*RegisterNamePrinter)(int reg); | 306 typedef void (X86Decoder::*RegisterNamePrinter)(int reg); |
292 | 307 |
293 int PrintRightOperandHelper(uint8_t* modrmp, | 308 int PrintRightOperandHelper(uint8_t* modrmp, |
294 RegisterNamePrinter register_printer); | 309 RegisterNamePrinter register_printer); |
295 int PrintRightOperand(uint8_t* modrmp); | 310 int PrintRightOperand(uint8_t* modrmp); |
296 int PrintRightXmmOperand(uint8_t* modrmp); | 311 int PrintRightXmmOperand(uint8_t* modrmp); |
297 int PrintRightByteOperand(uint8_t* modrmp); | 312 int PrintRightByteOperand(uint8_t* modrmp); |
298 int PrintOperands(const char* mnem, OperandOrder op_order, uint8_t* data); | 313 int PrintOperands(const char* mnem, OperandOrder op_order, uint8_t* data); |
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388 UNIMPLEMENTED(); | 403 UNIMPLEMENTED(); |
389 } | 404 } |
390 | 405 |
391 | 406 |
392 void X86Decoder::PrintXmmRegister(int reg) { | 407 void X86Decoder::PrintXmmRegister(int reg) { |
393 ASSERT(0 <= reg); | 408 ASSERT(0 <= reg); |
394 ASSERT(reg < kMaxXmmRegisters); | 409 ASSERT(reg < kMaxXmmRegisters); |
395 Print(xmm_regs[reg]); | 410 Print(xmm_regs[reg]); |
396 } | 411 } |
397 | 412 |
| 413 void X86Decoder::PrintXmmComparison(int comparison) { |
| 414 ASSERT(0 <= comparison); |
| 415 ASSERT(comparison < 8); |
| 416 static const char* comparisons[8] = { |
| 417 "eq", "lt", "le", "unordered", "not eq", "not lt", "not le", "ordered" |
| 418 }; |
| 419 Print(comparisons[comparison]); |
| 420 } |
| 421 |
398 | 422 |
399 static const char* ObjectToCStringNoGC(const Object& obj) { | 423 static const char* ObjectToCStringNoGC(const Object& obj) { |
400 if (obj.IsSmi() || | 424 if (obj.IsSmi() || |
401 obj.IsMint() || | 425 obj.IsMint() || |
402 obj.IsDouble() || | 426 obj.IsDouble() || |
403 obj.IsString() || | 427 obj.IsString() || |
404 obj.IsNull() || | 428 obj.IsNull() || |
405 obj.IsBool() || | 429 obj.IsBool() || |
406 obj.IsClass() || | 430 obj.IsClass() || |
407 obj.IsFunction() || | 431 obj.IsFunction() || |
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1330 } | 1354 } |
1331 } else if (f0byte == 0x28) { | 1355 } else if (f0byte == 0x28) { |
1332 // movaps | 1356 // movaps |
1333 Print(f0mnem); | 1357 Print(f0mnem); |
1334 int mod, regop, rm; | 1358 int mod, regop, rm; |
1335 GetModRm(*data, &mod, ®op, &rm); | 1359 GetModRm(*data, &mod, ®op, &rm); |
1336 Print(" "); | 1360 Print(" "); |
1337 PrintXmmRegister(regop); | 1361 PrintXmmRegister(regop); |
1338 Print(","); | 1362 Print(","); |
1339 data += PrintRightXmmOperand(data); | 1363 data += PrintRightXmmOperand(data); |
| 1364 } else if (f0byte == 0x11) { |
| 1365 Print("movups "); |
| 1366 int mod, regop, rm; |
| 1367 GetModRm(*data, &mod, ®op, &rm); |
| 1368 data += PrintRightXmmOperand(data); |
| 1369 Print(","); |
| 1370 PrintXmmRegister(regop); |
| 1371 } else if (f0byte == 0x10) { |
| 1372 int mod, regop, rm; |
| 1373 GetModRm(*data, &mod, ®op, &rm); |
| 1374 Print("movups "); |
| 1375 PrintXmmRegister(regop); |
| 1376 Print(","); |
| 1377 data += PrintRightOperand(data); |
| 1378 } else if (f0byte == 0x51 || f0byte == 0x52 || f0byte == 0x53 || |
| 1379 f0byte == 0x54 || f0byte == 0x56 || f0byte == 0x58 || |
| 1380 f0byte == 0x59 || f0byte == 0x5C || f0byte == 0x5D || |
| 1381 f0byte == 0x5E || f0byte == 0x5F) { |
| 1382 int mod, regop, rm; |
| 1383 GetModRm(*data, &mod, ®op, &rm); |
| 1384 Print(f0mnem); |
| 1385 Print(" "); |
| 1386 PrintXmmRegister(regop); |
| 1387 Print(","); |
| 1388 data += PrintRightXmmOperand(data); |
| 1389 } else if (f0byte == 0x50) { |
| 1390 Print("movmskpd "); |
| 1391 int mod, regop, rm; |
| 1392 GetModRm(*data, &mod, ®op, &rm); |
| 1393 PrintCPURegister(regop); |
| 1394 Print(","); |
| 1395 data += PrintRightXmmOperand(data); |
| 1396 } else if (f0byte == 0xC2 || f0byte == 0xC6) { |
| 1397 if (f0byte == 0xC2) |
| 1398 Print("cmpps "); |
| 1399 else |
| 1400 Print("shufps "); |
| 1401 int mod, regop, rm; |
| 1402 GetModRm(*data, &mod, ®op, &rm); |
| 1403 Print(" "); |
| 1404 PrintXmmRegister(regop); |
| 1405 Print(","); |
| 1406 data += PrintRightXmmOperand(data); |
| 1407 int comparison = *data; |
| 1408 Print(" ["); |
| 1409 PrintHex(comparison); |
| 1410 Print("]"); |
| 1411 data++; |
1340 } else { | 1412 } else { |
1341 UNIMPLEMENTED(); | 1413 UNIMPLEMENTED(); |
1342 } | 1414 } |
1343 } | 1415 } |
1344 } | 1416 } |
1345 break; | 1417 break; |
1346 | 1418 |
1347 case 0x8F: | 1419 case 0x8F: |
1348 { data++; | 1420 { data++; |
1349 int mod, regop, rm; | 1421 int mod, regop, rm; |
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1720 human_buffer, | 1792 human_buffer, |
1721 sizeof(human_buffer), | 1793 sizeof(human_buffer), |
1722 pc); | 1794 pc); |
1723 pc += instruction_length; | 1795 pc += instruction_length; |
1724 } | 1796 } |
1725 } | 1797 } |
1726 | 1798 |
1727 } // namespace dart | 1799 } // namespace dart |
1728 | 1800 |
1729 #endif // defined TARGET_ARCH_IA32 | 1801 #endif // defined TARGET_ARCH_IA32 |
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