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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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| 58 }; | 58 }; |
| 59 | 59 |
| 60 | 60 |
| 61 class StoreBufferOverflowStub: public CodeStub { | 61 class StoreBufferOverflowStub: public CodeStub { |
| 62 public: | 62 public: |
| 63 explicit StoreBufferOverflowStub(SaveFPRegsMode save_fp) | 63 explicit StoreBufferOverflowStub(SaveFPRegsMode save_fp) |
| 64 : save_doubles_(save_fp) { } | 64 : save_doubles_(save_fp) { } |
| 65 | 65 |
| 66 void Generate(MacroAssembler* masm); | 66 void Generate(MacroAssembler* masm); |
| 67 | 67 |
| 68 virtual bool CompilingCallsToThisStubIsGCSafe() { return true; } | 68 virtual bool IsPregenerated() { return true; } |
| 69 static void GenerateFixedRegStubsAheadOfTime(); | 69 static void GenerateFixedRegStubsAheadOfTime(); |
| 70 virtual bool SometimesSetsUpAFrame() { return false; } | 70 virtual bool SometimesSetsUpAFrame() { return false; } |
| 71 | 71 |
| 72 private: | 72 private: |
| 73 SaveFPRegsMode save_doubles_; | 73 SaveFPRegsMode save_doubles_; |
| 74 | 74 |
| 75 Major MajorKey() { return StoreBufferOverflow; } | 75 Major MajorKey() { return StoreBufferOverflow; } |
| 76 int MinorKey() { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; } | 76 int MinorKey() { return (save_doubles_ == kSaveFPRegs) ? 1 : 0; } |
| 77 }; | 77 }; |
| 78 | 78 |
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| 335 // so you don't have to set up the frame. | 335 // so you don't have to set up the frame. |
| 336 class WriteInt32ToHeapNumberStub : public CodeStub { | 336 class WriteInt32ToHeapNumberStub : public CodeStub { |
| 337 public: | 337 public: |
| 338 WriteInt32ToHeapNumberStub(Register the_int, | 338 WriteInt32ToHeapNumberStub(Register the_int, |
| 339 Register the_heap_number, | 339 Register the_heap_number, |
| 340 Register scratch) | 340 Register scratch) |
| 341 : the_int_(the_int), | 341 : the_int_(the_int), |
| 342 the_heap_number_(the_heap_number), | 342 the_heap_number_(the_heap_number), |
| 343 scratch_(scratch) { } | 343 scratch_(scratch) { } |
| 344 | 344 |
| 345 bool CompilingCallsToThisStubIsGCSafe(); | 345 bool IsPregenerated(); |
| 346 static void GenerateFixedRegStubsAheadOfTime(); | 346 static void GenerateFixedRegStubsAheadOfTime(); |
| 347 | 347 |
| 348 private: | 348 private: |
| 349 Register the_int_; | 349 Register the_int_; |
| 350 Register the_heap_number_; | 350 Register the_heap_number_; |
| 351 Register scratch_; | 351 Register scratch_; |
| 352 | 352 |
| 353 // Minor key encoding in 16 bits. | 353 // Minor key encoding in 16 bits. |
| 354 class IntRegisterBits: public BitField<int, 0, 4> {}; | 354 class IntRegisterBits: public BitField<int, 0, 4> {}; |
| 355 class HeapNumberRegisterBits: public BitField<int, 4, 4> {}; | 355 class HeapNumberRegisterBits: public BitField<int, 4, 4> {}; |
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| 409 address, // An input reg. | 409 address, // An input reg. |
| 410 value) { // One scratch reg. | 410 value) { // One scratch reg. |
| 411 } | 411 } |
| 412 | 412 |
| 413 enum Mode { | 413 enum Mode { |
| 414 STORE_BUFFER_ONLY, | 414 STORE_BUFFER_ONLY, |
| 415 INCREMENTAL, | 415 INCREMENTAL, |
| 416 INCREMENTAL_COMPACTION | 416 INCREMENTAL_COMPACTION |
| 417 }; | 417 }; |
| 418 | 418 |
| 419 virtual bool CompilingCallsToThisStubIsGCSafe(); | 419 virtual bool IsPregenerated(); |
| 420 static void GenerateFixedRegStubsAheadOfTime(); | 420 static void GenerateFixedRegStubsAheadOfTime(); |
| 421 virtual bool SometimesSetsUpAFrame() { return false; } | 421 virtual bool SometimesSetsUpAFrame() { return false; } |
| 422 | 422 |
| 423 static void PatchBranchIntoNop(MacroAssembler* masm, int pos) { | 423 static void PatchBranchIntoNop(MacroAssembler* masm, int pos) { |
| 424 masm->instr_at_put(pos, (masm->instr_at(pos) & ~B27) | (B24 | B20)); | 424 masm->instr_at_put(pos, (masm->instr_at(pos) & ~B27) | (B24 | B20)); |
| 425 ASSERT(Assembler::IsTstImmediate(masm->instr_at(pos))); | 425 ASSERT(Assembler::IsTstImmediate(masm->instr_at(pos))); |
| 426 } | 426 } |
| 427 | 427 |
| 428 static void PatchNopIntoBranch(MacroAssembler* masm, int pos) { | 428 static void PatchNopIntoBranch(MacroAssembler* masm, int pos) { |
| 429 masm->instr_at_put(pos, (masm->instr_at(pos) & ~(B24 | B20)) | B27); | 429 masm->instr_at_put(pos, (masm->instr_at(pos) & ~(B24 | B20)) | B27); |
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| 838 | 838 |
| 839 class LookupModeBits: public BitField<LookupMode, 0, 1> {}; | 839 class LookupModeBits: public BitField<LookupMode, 0, 1> {}; |
| 840 | 840 |
| 841 LookupMode mode_; | 841 LookupMode mode_; |
| 842 }; | 842 }; |
| 843 | 843 |
| 844 | 844 |
| 845 } } // namespace v8::internal | 845 } } // namespace v8::internal |
| 846 | 846 |
| 847 #endif // V8_ARM_CODE_STUBS_ARM_H_ | 847 #endif // V8_ARM_CODE_STUBS_ARM_H_ |
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