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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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31 #include "macro-assembler.h" | 31 #include "macro-assembler.h" |
32 #include "code-stubs.h" | 32 #include "code-stubs.h" |
33 #include "ic-inl.h" | 33 #include "ic-inl.h" |
34 | 34 |
35 namespace v8 { | 35 namespace v8 { |
36 namespace internal { | 36 namespace internal { |
37 | 37 |
38 | 38 |
39 // Compute a transcendental math function natively, or call the | 39 // Compute a transcendental math function natively, or call the |
40 // TranscendentalCache runtime function. | 40 // TranscendentalCache runtime function. |
41 class TranscendentalCacheStub: public CodeStub { | 41 class TranscendentalCacheStub: public PlatformCodeStub { |
42 public: | 42 public: |
43 enum ArgumentType { | 43 enum ArgumentType { |
44 TAGGED = 0, | 44 TAGGED = 0, |
45 UNTAGGED = 1 << TranscendentalCache::kTranscendentalTypeBits | 45 UNTAGGED = 1 << TranscendentalCache::kTranscendentalTypeBits |
46 }; | 46 }; |
47 | 47 |
48 TranscendentalCacheStub(TranscendentalCache::Type type, | 48 TranscendentalCacheStub(TranscendentalCache::Type type, |
49 ArgumentType argument_type) | 49 ArgumentType argument_type) |
50 : type_(type), argument_type_(argument_type) {} | 50 : type_(type), argument_type_(argument_type) {} |
51 void Generate(MacroAssembler* masm); | 51 void Generate(MacroAssembler* masm); |
52 static void GenerateOperation(MacroAssembler* masm, | 52 static void GenerateOperation(MacroAssembler* masm, |
53 TranscendentalCache::Type type); | 53 TranscendentalCache::Type type); |
54 private: | 54 private: |
55 TranscendentalCache::Type type_; | 55 TranscendentalCache::Type type_; |
56 ArgumentType argument_type_; | 56 ArgumentType argument_type_; |
57 | 57 |
58 Major MajorKey() { return TranscendentalCache; } | 58 Major MajorKey() { return TranscendentalCache; } |
59 int MinorKey() { return type_ | argument_type_; } | 59 int MinorKey() { return type_ | argument_type_; } |
60 Runtime::FunctionId RuntimeFunction(); | 60 Runtime::FunctionId RuntimeFunction(); |
61 }; | 61 }; |
62 | 62 |
63 | 63 |
64 class StoreBufferOverflowStub: public CodeStub { | 64 class StoreBufferOverflowStub: public PlatformCodeStub { |
65 public: | 65 public: |
66 explicit StoreBufferOverflowStub(SaveFPRegsMode save_fp) | 66 explicit StoreBufferOverflowStub(SaveFPRegsMode save_fp) |
67 : save_doubles_(save_fp) { } | 67 : save_doubles_(save_fp) { } |
68 | 68 |
69 void Generate(MacroAssembler* masm); | 69 void Generate(MacroAssembler* masm); |
70 | 70 |
71 virtual bool IsPregenerated() { return true; } | 71 virtual bool IsPregenerated() { return true; } |
72 static void GenerateFixedRegStubsAheadOfTime(); | 72 static void GenerateFixedRegStubsAheadOfTime(); |
73 virtual bool SometimesSetsUpAFrame() { return false; } | 73 virtual bool SometimesSetsUpAFrame() { return false; } |
74 | 74 |
75 private: | 75 private: |
76 SaveFPRegsMode save_doubles_; | 76 SaveFPRegsMode save_doubles_; |
77 | 77 |
78 Major MajorKey() { return StoreBufferOverflow; } | 78 Major MajorKey() { return StoreBufferOverflow; } |
79 int MinorKey() { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; } | 79 int MinorKey() { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; } |
80 }; | 80 }; |
81 | 81 |
82 | 82 |
83 class UnaryOpStub: public CodeStub { | 83 class UnaryOpStub: public PlatformCodeStub { |
84 public: | 84 public: |
85 UnaryOpStub(Token::Value op, | 85 UnaryOpStub(Token::Value op, |
86 UnaryOverwriteMode mode, | 86 UnaryOverwriteMode mode, |
87 UnaryOpIC::TypeInfo operand_type = UnaryOpIC::UNINITIALIZED) | 87 UnaryOpIC::TypeInfo operand_type = UnaryOpIC::UNINITIALIZED) |
88 : op_(op), | 88 : op_(op), |
89 mode_(mode), | 89 mode_(mode), |
90 operand_type_(operand_type) { | 90 operand_type_(operand_type) { |
91 } | 91 } |
92 | 92 |
93 private: | 93 private: |
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147 virtual InlineCacheState GetICState() { | 147 virtual InlineCacheState GetICState() { |
148 return UnaryOpIC::ToState(operand_type_); | 148 return UnaryOpIC::ToState(operand_type_); |
149 } | 149 } |
150 | 150 |
151 virtual void FinishCode(Handle<Code> code) { | 151 virtual void FinishCode(Handle<Code> code) { |
152 code->set_unary_op_type(operand_type_); | 152 code->set_unary_op_type(operand_type_); |
153 } | 153 } |
154 }; | 154 }; |
155 | 155 |
156 | 156 |
157 class BinaryOpStub: public CodeStub { | 157 class BinaryOpStub: public PlatformCodeStub { |
158 public: | 158 public: |
159 BinaryOpStub(Token::Value op, OverwriteMode mode) | 159 BinaryOpStub(Token::Value op, OverwriteMode mode) |
160 : op_(op), | 160 : op_(op), |
161 mode_(mode), | 161 mode_(mode), |
162 operands_type_(BinaryOpIC::UNINITIALIZED), | 162 operands_type_(BinaryOpIC::UNINITIALIZED), |
163 result_type_(BinaryOpIC::UNINITIALIZED) { | 163 result_type_(BinaryOpIC::UNINITIALIZED) { |
164 use_sse3_ = CpuFeatures::IsSupported(SSE3); | 164 use_sse3_ = CpuFeatures::IsSupported(SSE3); |
165 ASSERT(OpBits::is_valid(Token::NUM_TOKENS)); | 165 ASSERT(OpBits::is_valid(Token::NUM_TOKENS)); |
166 } | 166 } |
167 | 167 |
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308 // Omit left string check in stub (left is definitely a string). | 308 // Omit left string check in stub (left is definitely a string). |
309 NO_STRING_CHECK_LEFT_IN_STUB = 1 << 0, | 309 NO_STRING_CHECK_LEFT_IN_STUB = 1 << 0, |
310 // Omit right string check in stub (right is definitely a string). | 310 // Omit right string check in stub (right is definitely a string). |
311 NO_STRING_CHECK_RIGHT_IN_STUB = 1 << 1, | 311 NO_STRING_CHECK_RIGHT_IN_STUB = 1 << 1, |
312 // Omit both string checks in stub. | 312 // Omit both string checks in stub. |
313 NO_STRING_CHECK_IN_STUB = | 313 NO_STRING_CHECK_IN_STUB = |
314 NO_STRING_CHECK_LEFT_IN_STUB | NO_STRING_CHECK_RIGHT_IN_STUB | 314 NO_STRING_CHECK_LEFT_IN_STUB | NO_STRING_CHECK_RIGHT_IN_STUB |
315 }; | 315 }; |
316 | 316 |
317 | 317 |
318 class StringAddStub: public CodeStub { | 318 class StringAddStub: public PlatformCodeStub { |
319 public: | 319 public: |
320 explicit StringAddStub(StringAddFlags flags) : flags_(flags) {} | 320 explicit StringAddStub(StringAddFlags flags) : flags_(flags) {} |
321 | 321 |
322 private: | 322 private: |
323 Major MajorKey() { return StringAdd; } | 323 Major MajorKey() { return StringAdd; } |
324 int MinorKey() { return flags_; } | 324 int MinorKey() { return flags_; } |
325 | 325 |
326 void Generate(MacroAssembler* masm); | 326 void Generate(MacroAssembler* masm); |
327 | 327 |
328 void GenerateConvertArgument(MacroAssembler* masm, | 328 void GenerateConvertArgument(MacroAssembler* masm, |
329 int stack_offset, | 329 int stack_offset, |
330 Register arg, | 330 Register arg, |
331 Register scratch1, | 331 Register scratch1, |
332 Register scratch2, | 332 Register scratch2, |
333 Register scratch3, | 333 Register scratch3, |
334 Label* slow); | 334 Label* slow); |
335 | 335 |
336 const StringAddFlags flags_; | 336 const StringAddFlags flags_; |
337 }; | 337 }; |
338 | 338 |
339 | 339 |
340 class SubStringStub: public CodeStub { | 340 class SubStringStub: public PlatformCodeStub { |
341 public: | 341 public: |
342 SubStringStub() {} | 342 SubStringStub() {} |
343 | 343 |
344 private: | 344 private: |
345 Major MajorKey() { return SubString; } | 345 Major MajorKey() { return SubString; } |
346 int MinorKey() { return 0; } | 346 int MinorKey() { return 0; } |
347 | 347 |
348 void Generate(MacroAssembler* masm); | 348 void Generate(MacroAssembler* masm); |
349 }; | 349 }; |
350 | 350 |
351 | 351 |
352 class StringCompareStub: public CodeStub { | 352 class StringCompareStub: public PlatformCodeStub { |
353 public: | 353 public: |
354 StringCompareStub() { } | 354 StringCompareStub() { } |
355 | 355 |
356 // Compares two flat ASCII strings and returns result in eax. | 356 // Compares two flat ASCII strings and returns result in eax. |
357 static void GenerateCompareFlatAsciiStrings(MacroAssembler* masm, | 357 static void GenerateCompareFlatAsciiStrings(MacroAssembler* masm, |
358 Register left, | 358 Register left, |
359 Register right, | 359 Register right, |
360 Register scratch1, | 360 Register scratch1, |
361 Register scratch2, | 361 Register scratch2, |
362 Register scratch3); | 362 Register scratch3); |
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378 MacroAssembler* masm, | 378 MacroAssembler* masm, |
379 Register left, | 379 Register left, |
380 Register right, | 380 Register right, |
381 Register length, | 381 Register length, |
382 Register scratch, | 382 Register scratch, |
383 Label* chars_not_equal, | 383 Label* chars_not_equal, |
384 Label::Distance chars_not_equal_near = Label::kFar); | 384 Label::Distance chars_not_equal_near = Label::kFar); |
385 }; | 385 }; |
386 | 386 |
387 | 387 |
388 class NumberToStringStub: public CodeStub { | 388 class NumberToStringStub: public PlatformCodeStub { |
389 public: | 389 public: |
390 NumberToStringStub() { } | 390 NumberToStringStub() { } |
391 | 391 |
392 // Generate code to do a lookup in the number string cache. If the number in | 392 // Generate code to do a lookup in the number string cache. If the number in |
393 // the register object is found in the cache the generated code falls through | 393 // the register object is found in the cache the generated code falls through |
394 // with the result in the result register. The object and the result register | 394 // with the result in the result register. The object and the result register |
395 // can be the same. If the number is not found in the cache the code jumps to | 395 // can be the same. If the number is not found in the cache the code jumps to |
396 // the label not_found with only the content of register object unchanged. | 396 // the label not_found with only the content of register object unchanged. |
397 static void GenerateLookupNumberStringCache(MacroAssembler* masm, | 397 static void GenerateLookupNumberStringCache(MacroAssembler* masm, |
398 Register object, | 398 Register object, |
399 Register result, | 399 Register result, |
400 Register scratch1, | 400 Register scratch1, |
401 Register scratch2, | 401 Register scratch2, |
402 bool object_is_smi, | 402 bool object_is_smi, |
403 Label* not_found); | 403 Label* not_found); |
404 | 404 |
405 private: | 405 private: |
406 Major MajorKey() { return NumberToString; } | 406 Major MajorKey() { return NumberToString; } |
407 int MinorKey() { return 0; } | 407 int MinorKey() { return 0; } |
408 | 408 |
409 void Generate(MacroAssembler* masm); | 409 void Generate(MacroAssembler* masm); |
410 }; | 410 }; |
411 | 411 |
412 | 412 |
413 class StringDictionaryLookupStub: public CodeStub { | 413 class StringDictionaryLookupStub: public PlatformCodeStub { |
414 public: | 414 public: |
415 enum LookupMode { POSITIVE_LOOKUP, NEGATIVE_LOOKUP }; | 415 enum LookupMode { POSITIVE_LOOKUP, NEGATIVE_LOOKUP }; |
416 | 416 |
417 StringDictionaryLookupStub(Register dictionary, | 417 StringDictionaryLookupStub(Register dictionary, |
418 Register result, | 418 Register result, |
419 Register index, | 419 Register index, |
420 LookupMode mode) | 420 LookupMode mode) |
421 : dictionary_(dictionary), result_(result), index_(index), mode_(mode) { } | 421 : dictionary_(dictionary), result_(result), index_(index), mode_(mode) { } |
422 | 422 |
423 void Generate(MacroAssembler* masm); | 423 void Generate(MacroAssembler* masm); |
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465 class IndexBits: public BitField<int, 6, 3> {}; | 465 class IndexBits: public BitField<int, 6, 3> {}; |
466 class LookupModeBits: public BitField<LookupMode, 9, 1> {}; | 466 class LookupModeBits: public BitField<LookupMode, 9, 1> {}; |
467 | 467 |
468 Register dictionary_; | 468 Register dictionary_; |
469 Register result_; | 469 Register result_; |
470 Register index_; | 470 Register index_; |
471 LookupMode mode_; | 471 LookupMode mode_; |
472 }; | 472 }; |
473 | 473 |
474 | 474 |
475 class RecordWriteStub: public CodeStub { | 475 class RecordWriteStub: public PlatformCodeStub { |
476 public: | 476 public: |
477 RecordWriteStub(Register object, | 477 RecordWriteStub(Register object, |
478 Register value, | 478 Register value, |
479 Register address, | 479 Register address, |
480 RememberedSetAction remembered_set_action, | 480 RememberedSetAction remembered_set_action, |
481 SaveFPRegsMode fp_mode) | 481 SaveFPRegsMode fp_mode) |
482 : object_(object), | 482 : object_(object), |
483 value_(value), | 483 value_(value), |
484 address_(address), | 484 address_(address), |
485 remembered_set_action_(remembered_set_action), | 485 remembered_set_action_(remembered_set_action), |
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668 Register scratch0_orig_; | 668 Register scratch0_orig_; |
669 Register object_; | 669 Register object_; |
670 Register address_; | 670 Register address_; |
671 Register scratch0_; | 671 Register scratch0_; |
672 Register scratch1_; | 672 Register scratch1_; |
673 // Third scratch register is always ecx. | 673 // Third scratch register is always ecx. |
674 | 674 |
675 Register GetRegThatIsNotEcxOr(Register r1, | 675 Register GetRegThatIsNotEcxOr(Register r1, |
676 Register r2, | 676 Register r2, |
677 Register r3) { | 677 Register r3) { |
678 for (int i = 0; i < Register::kNumAllocatableRegisters; i++) { | 678 for (int i = 0; i < Register::NumAllocatableRegisters(); i++) { |
679 Register candidate = Register::FromAllocationIndex(i); | 679 Register candidate = Register::FromAllocationIndex(i); |
680 if (candidate.is(ecx)) continue; | 680 if (candidate.is(ecx)) continue; |
681 if (candidate.is(r1)) continue; | 681 if (candidate.is(r1)) continue; |
682 if (candidate.is(r2)) continue; | 682 if (candidate.is(r2)) continue; |
683 if (candidate.is(r3)) continue; | 683 if (candidate.is(r3)) continue; |
684 return candidate; | 684 return candidate; |
685 } | 685 } |
686 UNREACHABLE(); | 686 UNREACHABLE(); |
687 return no_reg; | 687 return no_reg; |
688 } | 688 } |
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727 Register address_; | 727 Register address_; |
728 RememberedSetAction remembered_set_action_; | 728 RememberedSetAction remembered_set_action_; |
729 SaveFPRegsMode save_fp_regs_mode_; | 729 SaveFPRegsMode save_fp_regs_mode_; |
730 RegisterAllocation regs_; | 730 RegisterAllocation regs_; |
731 }; | 731 }; |
732 | 732 |
733 | 733 |
734 } } // namespace v8::internal | 734 } } // namespace v8::internal |
735 | 735 |
736 #endif // V8_IA32_CODE_STUBS_IA32_H_ | 736 #endif // V8_IA32_CODE_STUBS_IA32_H_ |
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