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Issue 88043002: Out-of-line constant pool on Arm: Stage 3 - Set Constant Pool Pointer on Function Entry (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Revert inadvertent flag change Created 7 years ago
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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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842 static byte* GetNoCodeAgeSequence(uint32_t* length) { 842 static byte* GetNoCodeAgeSequence(uint32_t* length) {
843 // The sequence of instructions that is patched out for aging code is the 843 // The sequence of instructions that is patched out for aging code is the
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()->PushFixedFrame(r1);
853 patcher.masm()->nop(ip.code()); 853 patcher.masm()->nop(ip.code());
854 patcher.masm()->add(fp, sp, 854 patcher.masm()->add(fp, sp,
855 Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); 855 Operand(StandardFrameConstants::kFixedFrameSizeFromFp));
856 initialized = true; 856 initialized = true;
857 } 857 }
858 return byte_sequence; 858 return byte_sequence;
859 } 859 }
860 860
861 861
862 bool Code::IsYoungSequence(byte* sequence) { 862 bool Code::IsYoungSequence(byte* sequence) {
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898 patcher.masm()->add(r0, pc, Operand(-8)); 898 patcher.masm()->add(r0, pc, Operand(-8));
899 patcher.masm()->ldr(pc, MemOperand(pc, -4)); 899 patcher.masm()->ldr(pc, MemOperand(pc, -4));
900 patcher.masm()->emit_code_stub_address(stub); 900 patcher.masm()->emit_code_stub_address(stub);
901 } 901 }
902 } 902 }
903 903
904 904
905 } } // namespace v8::internal 905 } } // namespace v8::internal
906 906
907 #endif // V8_TARGET_ARCH_ARM 907 #endif // V8_TARGET_ARCH_ARM
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