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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef V8_IA32_CODE_STUBS_IA32_H_ | 5 #ifndef V8_IA32_CODE_STUBS_IA32_H_ |
6 #define V8_IA32_CODE_STUBS_IA32_H_ | 6 #define V8_IA32_CODE_STUBS_IA32_H_ |
7 | 7 |
8 namespace v8 { | 8 namespace v8 { |
9 namespace internal { | 9 namespace internal { |
10 | 10 |
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69 Register r0); | 69 Register r0); |
70 | 70 |
71 static void GeneratePositiveLookup(MacroAssembler* masm, | 71 static void GeneratePositiveLookup(MacroAssembler* masm, |
72 Label* miss, | 72 Label* miss, |
73 Label* done, | 73 Label* done, |
74 Register elements, | 74 Register elements, |
75 Register name, | 75 Register name, |
76 Register r0, | 76 Register r0, |
77 Register r1); | 77 Register r1); |
78 | 78 |
79 virtual bool SometimesSetsUpAFrame() { return false; } | 79 bool SometimesSetsUpAFrame() OVERRIDE { return false; } |
80 | 80 |
81 private: | 81 private: |
82 static const int kInlinedProbes = 4; | 82 static const int kInlinedProbes = 4; |
83 static const int kTotalProbes = 20; | 83 static const int kTotalProbes = 20; |
84 | 84 |
85 static const int kCapacityOffset = | 85 static const int kCapacityOffset = |
86 NameDictionary::kHeaderSize + | 86 NameDictionary::kHeaderSize + |
87 NameDictionary::kCapacityIndex * kPointerSize; | 87 NameDictionary::kCapacityIndex * kPointerSize; |
88 | 88 |
89 static const int kElementsStartOffset = | 89 static const int kElementsStartOffset = |
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135 | 135 |
136 RecordWriteStub(uint32_t key, Isolate* isolate) | 136 RecordWriteStub(uint32_t key, Isolate* isolate) |
137 : PlatformCodeStub(key, isolate), regs_(object(), address(), value()) {} | 137 : PlatformCodeStub(key, isolate), regs_(object(), address(), value()) {} |
138 | 138 |
139 enum Mode { | 139 enum Mode { |
140 STORE_BUFFER_ONLY, | 140 STORE_BUFFER_ONLY, |
141 INCREMENTAL, | 141 INCREMENTAL, |
142 INCREMENTAL_COMPACTION | 142 INCREMENTAL_COMPACTION |
143 }; | 143 }; |
144 | 144 |
145 virtual bool SometimesSetsUpAFrame() { return false; } | 145 bool SometimesSetsUpAFrame() OVERRIDE { return false; } |
146 | 146 |
147 static const byte kTwoByteNopInstruction = 0x3c; // Cmpb al, #imm8. | 147 static const byte kTwoByteNopInstruction = 0x3c; // Cmpb al, #imm8. |
148 static const byte kTwoByteJumpInstruction = 0xeb; // Jmp #imm8. | 148 static const byte kTwoByteJumpInstruction = 0xeb; // Jmp #imm8. |
149 | 149 |
150 static const byte kFiveByteNopInstruction = 0x3d; // Cmpl eax, #imm32. | 150 static const byte kFiveByteNopInstruction = 0x3d; // Cmpl eax, #imm32. |
151 static const byte kFiveByteJumpInstruction = 0xe9; // Jmp #imm32. | 151 static const byte kFiveByteJumpInstruction = 0xe9; // Jmp #imm32. |
152 | 152 |
153 static Mode GetMode(Code* stub) { | 153 static Mode GetMode(Code* stub) { |
154 byte first_instruction = stub->instruction_start()[0]; | 154 byte first_instruction = stub->instruction_start()[0]; |
155 byte second_instruction = stub->instruction_start()[2]; | 155 byte second_instruction = stub->instruction_start()[2]; |
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332 return no_reg; | 332 return no_reg; |
333 } | 333 } |
334 friend class RecordWriteStub; | 334 friend class RecordWriteStub; |
335 }; | 335 }; |
336 | 336 |
337 enum OnNoNeedToInformIncrementalMarker { | 337 enum OnNoNeedToInformIncrementalMarker { |
338 kReturnOnNoNeedToInformIncrementalMarker, | 338 kReturnOnNoNeedToInformIncrementalMarker, |
339 kUpdateRememberedSetOnNoNeedToInformIncrementalMarker | 339 kUpdateRememberedSetOnNoNeedToInformIncrementalMarker |
340 }; | 340 }; |
341 | 341 |
342 virtual inline Major MajorKey() const FINAL OVERRIDE { return RecordWrite; } | 342 inline Major MajorKey() const FINAL { return RecordWrite; } |
343 | 343 |
344 virtual void Generate(MacroAssembler* masm) OVERRIDE; | 344 void Generate(MacroAssembler* masm) OVERRIDE; |
345 void GenerateIncremental(MacroAssembler* masm, Mode mode); | 345 void GenerateIncremental(MacroAssembler* masm, Mode mode); |
346 void CheckNeedsToInformIncrementalMarker( | 346 void CheckNeedsToInformIncrementalMarker( |
347 MacroAssembler* masm, | 347 MacroAssembler* masm, |
348 OnNoNeedToInformIncrementalMarker on_no_need, | 348 OnNoNeedToInformIncrementalMarker on_no_need, |
349 Mode mode); | 349 Mode mode); |
350 void InformIncrementalMarker(MacroAssembler* masm); | 350 void InformIncrementalMarker(MacroAssembler* masm); |
351 | 351 |
352 void Activate(Code* code) { | 352 void Activate(Code* code) OVERRIDE { |
353 code->GetHeap()->incremental_marking()->ActivateGeneratedStub(code); | 353 code->GetHeap()->incremental_marking()->ActivateGeneratedStub(code); |
354 } | 354 } |
355 | 355 |
356 Register object() const { | 356 Register object() const { |
357 return Register::from_code(ObjectBits::decode(minor_key_)); | 357 return Register::from_code(ObjectBits::decode(minor_key_)); |
358 } | 358 } |
359 | 359 |
360 Register value() const { | 360 Register value() const { |
361 return Register::from_code(ValueBits::decode(minor_key_)); | 361 return Register::from_code(ValueBits::decode(minor_key_)); |
362 } | 362 } |
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381 | 381 |
382 RegisterAllocation regs_; | 382 RegisterAllocation regs_; |
383 | 383 |
384 DISALLOW_COPY_AND_ASSIGN(RecordWriteStub); | 384 DISALLOW_COPY_AND_ASSIGN(RecordWriteStub); |
385 }; | 385 }; |
386 | 386 |
387 | 387 |
388 } } // namespace v8::internal | 388 } } // namespace v8::internal |
389 | 389 |
390 #endif // V8_IA32_CODE_STUBS_IA32_H_ | 390 #endif // V8_IA32_CODE_STUBS_IA32_H_ |
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