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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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844 // following boilerplate stack-building prologue that is found in FUNCTIONS | 844 // following boilerplate stack-building prologue that is found in FUNCTIONS |
845 static bool initialized = false; | 845 static bool initialized = false; |
846 static uint32_t sequence[kNoCodeAgeSequenceLength]; | 846 static uint32_t sequence[kNoCodeAgeSequenceLength]; |
847 byte* byte_sequence = reinterpret_cast<byte*>(sequence); | 847 byte* byte_sequence = reinterpret_cast<byte*>(sequence); |
848 *length = kNoCodeAgeSequenceLength * Assembler::kInstrSize; | 848 *length = kNoCodeAgeSequenceLength * Assembler::kInstrSize; |
849 if (!initialized) { | 849 if (!initialized) { |
850 CodePatcher patcher(byte_sequence, kNoCodeAgeSequenceLength); | 850 CodePatcher patcher(byte_sequence, kNoCodeAgeSequenceLength); |
851 PredictableCodeSizeScope scope(patcher.masm(), *length); | 851 PredictableCodeSizeScope scope(patcher.masm(), *length); |
852 patcher.masm()->stm(db_w, sp, r1.bit() | cp.bit() | fp.bit() | lr.bit()); | 852 patcher.masm()->stm(db_w, sp, r1.bit() | cp.bit() | fp.bit() | lr.bit()); |
853 patcher.masm()->nop(ip.code()); | 853 patcher.masm()->nop(ip.code()); |
854 patcher.masm()->add(fp, sp, Operand(2 * kPointerSize)); | 854 patcher.masm()->add(fp, sp, |
| 855 Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); |
855 initialized = true; | 856 initialized = true; |
856 } | 857 } |
857 return byte_sequence; | 858 return byte_sequence; |
858 } | 859 } |
859 | 860 |
860 | 861 |
861 bool Code::IsYoungSequence(byte* sequence) { | 862 bool Code::IsYoungSequence(byte* sequence) { |
862 uint32_t young_length; | 863 uint32_t young_length; |
863 byte* young_sequence = GetNoCodeAgeSequence(&young_length); | 864 byte* young_sequence = GetNoCodeAgeSequence(&young_length); |
864 bool result = !memcmp(sequence, young_sequence, young_length); | 865 bool result = !memcmp(sequence, young_sequence, young_length); |
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897 patcher.masm()->add(r0, pc, Operand(-8)); | 898 patcher.masm()->add(r0, pc, Operand(-8)); |
898 patcher.masm()->ldr(pc, MemOperand(pc, -4)); | 899 patcher.masm()->ldr(pc, MemOperand(pc, -4)); |
899 patcher.masm()->emit_code_stub_address(stub); | 900 patcher.masm()->emit_code_stub_address(stub); |
900 } | 901 } |
901 } | 902 } |
902 | 903 |
903 | 904 |
904 } } // namespace v8::internal | 905 } } // namespace v8::internal |
905 | 906 |
906 #endif // V8_TARGET_ARCH_ARM | 907 #endif // V8_TARGET_ARCH_ARM |
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