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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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61 | 61 |
62 | 62 |
63 class StoreBufferOverflowStub: public PlatformCodeStub { | 63 class StoreBufferOverflowStub: public PlatformCodeStub { |
64 public: | 64 public: |
65 explicit StoreBufferOverflowStub(SaveFPRegsMode save_fp) | 65 explicit StoreBufferOverflowStub(SaveFPRegsMode save_fp) |
66 : save_doubles_(save_fp) { } | 66 : save_doubles_(save_fp) { } |
67 | 67 |
68 void Generate(MacroAssembler* masm); | 68 void Generate(MacroAssembler* masm); |
69 | 69 |
70 virtual bool IsPregenerated() { return true; } | 70 virtual bool IsPregenerated() { return true; } |
71 static void GenerateFixedRegStubsAheadOfTime(); | 71 static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate); |
72 virtual bool SometimesSetsUpAFrame() { return false; } | 72 virtual bool SometimesSetsUpAFrame() { return false; } |
73 | 73 |
74 private: | 74 private: |
75 SaveFPRegsMode save_doubles_; | 75 SaveFPRegsMode save_doubles_; |
76 | 76 |
77 Major MajorKey() { return StoreBufferOverflow; } | 77 Major MajorKey() { return StoreBufferOverflow; } |
78 int MinorKey() { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; } | 78 int MinorKey() { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; } |
79 }; | 79 }; |
80 | 80 |
81 | 81 |
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395 value) { // One scratch reg. | 395 value) { // One scratch reg. |
396 } | 396 } |
397 | 397 |
398 enum Mode { | 398 enum Mode { |
399 STORE_BUFFER_ONLY, | 399 STORE_BUFFER_ONLY, |
400 INCREMENTAL, | 400 INCREMENTAL, |
401 INCREMENTAL_COMPACTION | 401 INCREMENTAL_COMPACTION |
402 }; | 402 }; |
403 | 403 |
404 virtual bool IsPregenerated(); | 404 virtual bool IsPregenerated(); |
405 static void GenerateFixedRegStubsAheadOfTime(); | 405 static void GenerateFixedRegStubsAheadOfTime(Isolate* isolate); |
406 virtual bool SometimesSetsUpAFrame() { return false; } | 406 virtual bool SometimesSetsUpAFrame() { return false; } |
407 | 407 |
408 static const byte kTwoByteNopInstruction = 0x3c; // Cmpb al, #imm8. | 408 static const byte kTwoByteNopInstruction = 0x3c; // Cmpb al, #imm8. |
409 static const byte kTwoByteJumpInstruction = 0xeb; // Jmp #imm8. | 409 static const byte kTwoByteJumpInstruction = 0xeb; // Jmp #imm8. |
410 | 410 |
411 static const byte kFiveByteNopInstruction = 0x3d; // Cmpl eax, #imm32. | 411 static const byte kFiveByteNopInstruction = 0x3d; // Cmpl eax, #imm32. |
412 static const byte kFiveByteJumpInstruction = 0xe9; // Jmp #imm32. | 412 static const byte kFiveByteJumpInstruction = 0xe9; // Jmp #imm32. |
413 | 413 |
414 static Mode GetMode(Code* stub) { | 414 static Mode GetMode(Code* stub) { |
415 byte first_instruction = stub->instruction_start()[0]; | 415 byte first_instruction = stub->instruction_start()[0]; |
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614 RememberedSetAction remembered_set_action_; | 614 RememberedSetAction remembered_set_action_; |
615 SaveFPRegsMode save_fp_regs_mode_; | 615 SaveFPRegsMode save_fp_regs_mode_; |
616 Label slow_; | 616 Label slow_; |
617 RegisterAllocation regs_; | 617 RegisterAllocation regs_; |
618 }; | 618 }; |
619 | 619 |
620 | 620 |
621 } } // namespace v8::internal | 621 } } // namespace v8::internal |
622 | 622 |
623 #endif // V8_X64_CODE_STUBS_X64_H_ | 623 #endif // V8_X64_CODE_STUBS_X64_H_ |
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