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Issue 77763006: MIPS: Replace hard-coded stack frame size literals with StandardFrameConstants::kFixedFrameSizeFrom… (Closed) Base URL: https://github.com/v8/v8.git@gbl
Patch Set: Created 7 years, 1 month 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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611 // The sequence of instructions that is patched out for aging code is the 611 // The sequence of instructions that is patched out for aging code is the
612 // following boilerplate stack-building prologue that is found in FUNCTIONS 612 // following boilerplate stack-building prologue that is found in FUNCTIONS
613 static bool initialized = false; 613 static bool initialized = false;
614 static uint32_t sequence[kNoCodeAgeSequenceLength]; 614 static uint32_t sequence[kNoCodeAgeSequenceLength];
615 byte* byte_sequence = reinterpret_cast<byte*>(sequence); 615 byte* byte_sequence = reinterpret_cast<byte*>(sequence);
616 *length = kNoCodeAgeSequenceLength * Assembler::kInstrSize; 616 *length = kNoCodeAgeSequenceLength * Assembler::kInstrSize;
617 if (!initialized) { 617 if (!initialized) {
618 CodePatcher patcher(byte_sequence, kNoCodeAgeSequenceLength); 618 CodePatcher patcher(byte_sequence, kNoCodeAgeSequenceLength);
619 patcher.masm()->Push(ra, fp, cp, a1); 619 patcher.masm()->Push(ra, fp, cp, a1);
620 patcher.masm()->nop(Assembler::CODE_AGE_SEQUENCE_NOP); 620 patcher.masm()->nop(Assembler::CODE_AGE_SEQUENCE_NOP);
621 patcher.masm()->Addu(fp, sp, Operand(2 * kPointerSize)); 621 patcher.masm()->Addu(fp, sp,
622 Operand(StandardFrameConstants::kFixedFrameSizeFromFp));
622 initialized = true; 623 initialized = true;
623 } 624 }
624 return byte_sequence; 625 return byte_sequence;
625 } 626 }
626 627
627 628
628 bool Code::IsYoungSequence(byte* sequence) { 629 bool Code::IsYoungSequence(byte* sequence) {
629 uint32_t young_length; 630 uint32_t young_length;
630 byte* young_sequence = GetNoCodeAgeSequence(&young_length); 631 byte* young_sequence = GetNoCodeAgeSequence(&young_length);
631 bool result = !memcmp(sequence, young_sequence, young_length); 632 bool result = !memcmp(sequence, young_sequence, young_length);
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674 patcher.masm()->emit_code_stub_address(stub); 675 patcher.masm()->emit_code_stub_address(stub);
675 } 676 }
676 } 677 }
677 678
678 679
679 #undef __ 680 #undef __
680 681
681 } } // namespace v8::internal 682 } } // namespace v8::internal
682 683
683 #endif // V8_TARGET_ARCH_MIPS 684 #endif // V8_TARGET_ARCH_MIPS
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