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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/ppc/codegen-ppc.h" | 5 #include "src/ppc/codegen-ppc.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_PPC | 7 #if V8_TARGET_ARCH_PPC |
8 | 8 |
9 #include "src/codegen.h" | 9 #include "src/codegen.h" |
10 #include "src/macro-assembler.h" | 10 #include "src/macro-assembler.h" |
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609 DCHECK(young_sequence_.length() == kNoCodeAgeSequenceLength); | 609 DCHECK(young_sequence_.length() == kNoCodeAgeSequenceLength); |
610 // Since patcher is a large object, allocate it dynamically when needed, | 610 // Since patcher is a large object, allocate it dynamically when needed, |
611 // to avoid overloading the stack in stress conditions. | 611 // to avoid overloading the stack in stress conditions. |
612 // DONT_FLUSH is used because the CodeAgingHelper is initialized early in | 612 // DONT_FLUSH is used because the CodeAgingHelper is initialized early in |
613 // the process, before ARM simulator ICache is setup. | 613 // the process, before ARM simulator ICache is setup. |
614 base::SmartPointer<CodePatcher> patcher( | 614 base::SmartPointer<CodePatcher> patcher( |
615 new CodePatcher(isolate, young_sequence_.start(), | 615 new CodePatcher(isolate, young_sequence_.start(), |
616 young_sequence_.length() / Assembler::kInstrSize, | 616 young_sequence_.length() / Assembler::kInstrSize, |
617 CodePatcher::DONT_FLUSH)); | 617 CodePatcher::DONT_FLUSH)); |
618 PredictableCodeSizeScope scope(patcher->masm(), young_sequence_.length()); | 618 PredictableCodeSizeScope scope(patcher->masm(), young_sequence_.length()); |
619 patcher->masm()->PushFixedFrame(r4); | 619 patcher->masm()->PushStandardFrame(r4); |
620 patcher->masm()->addi(fp, sp, | |
621 Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); | |
622 for (int i = 0; i < kNoCodeAgeSequenceNops; i++) { | 620 for (int i = 0; i < kNoCodeAgeSequenceNops; i++) { |
623 patcher->masm()->nop(); | 621 patcher->masm()->nop(); |
624 } | 622 } |
625 } | 623 } |
626 | 624 |
627 | 625 |
628 #ifdef DEBUG | 626 #ifdef DEBUG |
629 bool CodeAgingHelper::IsOld(byte* candidate) const { | 627 bool CodeAgingHelper::IsOld(byte* candidate) const { |
630 return Assembler::IsNop(Assembler::instr_at(candidate)); | 628 return Assembler::IsNop(Assembler::instr_at(candidate)); |
631 } | 629 } |
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674 patcher.masm()->Jump(r3); | 672 patcher.masm()->Jump(r3); |
675 for (int i = 0; i < kCodeAgingSequenceNops; i++) { | 673 for (int i = 0; i < kCodeAgingSequenceNops; i++) { |
676 patcher.masm()->nop(); | 674 patcher.masm()->nop(); |
677 } | 675 } |
678 } | 676 } |
679 } | 677 } |
680 } // namespace internal | 678 } // namespace internal |
681 } // namespace v8 | 679 } // namespace v8 |
682 | 680 |
683 #endif // V8_TARGET_ARCH_PPC | 681 #endif // V8_TARGET_ARCH_PPC |
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