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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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575 | 575 |
576 ASSERT(0 == output_offset); | 576 ASSERT(0 == output_offset); |
577 | 577 |
578 uint32_t pc = reinterpret_cast<uint32_t>( | 578 uint32_t pc = reinterpret_cast<uint32_t>( |
579 construct_stub->instruction_start() + | 579 construct_stub->instruction_start() + |
580 isolate_->heap()->construct_stub_deopt_pc_offset()->value()); | 580 isolate_->heap()->construct_stub_deopt_pc_offset()->value()); |
581 output_frame->SetPc(pc); | 581 output_frame->SetPc(pc); |
582 } | 582 } |
583 | 583 |
584 | 584 |
585 void Deoptimizer::DoComputeSetterStubFrame(TranslationIterator* iterator, | 585 void Deoptimizer::DoComputeAccessorStubFrame(TranslationIterator* iterator, |
586 int frame_index) { | 586 int frame_index, |
587 JSFunction* setter = JSFunction::cast(ComputeLiteral(iterator->Next())); | 587 bool is_setter_stub_frame) { |
588 // The receiver and the implicit return value are expected in registers by the | 588 JSFunction* accessor = JSFunction::cast(ComputeLiteral(iterator->Next())); |
589 // StoreIC, so they don't belong to the output stack frame. This means that we | 589 // The receiver (and the implicit return value, if any) are expected in |
590 // have to use a height of 0. | 590 // registers by the LoadIC/StoreIC, so they don't belong to the output stack |
| 591 // frame. This means that we have to use a height of 0. |
591 unsigned height = 0; | 592 unsigned height = 0; |
592 unsigned height_in_bytes = height * kPointerSize; | 593 unsigned height_in_bytes = height * kPointerSize; |
| 594 const char* kind = is_setter_stub_frame ? "setter" : "getter"; |
593 if (FLAG_trace_deopt) { | 595 if (FLAG_trace_deopt) { |
594 PrintF(" translating setter stub => height=%u\n", height_in_bytes); | 596 PrintF(" translating %s stub => height=%u\n", kind, height_in_bytes); |
595 } | 597 } |
596 | 598 |
597 // We need 5 stack entries from StackFrame::INTERNAL (ra, fp, cp, frame type, | 599 // We need 5 stack entries from StackFrame::INTERNAL (ra, fp, cp, frame type, |
598 // code object, see MacroAssembler::EnterFrame) + 1 stack entry from setter | 600 // code object, see MacroAssembler::EnterFrame). For a setter stub frame we |
599 // stub (implicit return value, see StoreStubCompiler::CompileStoreViaSetter). | 601 // need one additional entry for the implicit return value, see |
600 unsigned fixed_frame_size = (5 + 1) * kPointerSize; | 602 // StoreStubCompiler::CompileStoreViaSetter. |
| 603 unsigned fixed_frame_entries = 5 + (is_setter_stub_frame ? 1 : 0); |
| 604 unsigned fixed_frame_size = fixed_frame_entries * kPointerSize; |
601 unsigned output_frame_size = height_in_bytes + fixed_frame_size; | 605 unsigned output_frame_size = height_in_bytes + fixed_frame_size; |
602 | 606 |
603 // Allocate and store the output frame description. | 607 // Allocate and store the output frame description. |
604 FrameDescription* output_frame = | 608 FrameDescription* output_frame = |
605 new(output_frame_size) FrameDescription(output_frame_size, setter); | 609 new(output_frame_size) FrameDescription(output_frame_size, accessor); |
606 output_frame->SetFrameType(StackFrame::INTERNAL); | 610 output_frame->SetFrameType(StackFrame::INTERNAL); |
607 | 611 |
608 // A frame for a setter stub can not be the topmost or bottommost one. | 612 // A frame for an accessor stub can not be the topmost or bottommost one. |
609 ASSERT(frame_index > 0 && frame_index < output_count_ - 1); | 613 ASSERT(frame_index > 0 && frame_index < output_count_ - 1); |
610 ASSERT(output_[frame_index] == NULL); | 614 ASSERT(output_[frame_index] == NULL); |
611 output_[frame_index] = output_frame; | 615 output_[frame_index] = output_frame; |
612 | 616 |
613 // The top address of the frame is computed from the previous frame's top and | 617 // The top address of the frame is computed from the previous frame's top and |
614 // this frame's size. | 618 // this frame's size. |
615 uint32_t top_address = output_[frame_index - 1]->GetTop() - output_frame_size; | 619 uint32_t top_address = output_[frame_index - 1]->GetTop() - output_frame_size; |
616 output_frame->SetTop(top_address); | 620 output_frame->SetTop(top_address); |
617 | 621 |
618 unsigned output_offset = output_frame_size; | 622 unsigned output_offset = output_frame_size; |
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648 " ; context\n", | 652 " ; context\n", |
649 top_address + output_offset, output_offset, value); | 653 top_address + output_offset, output_offset, value); |
650 } | 654 } |
651 | 655 |
652 // A marker value is used in place of the function. | 656 // A marker value is used in place of the function. |
653 output_offset -= kPointerSize; | 657 output_offset -= kPointerSize; |
654 value = reinterpret_cast<intptr_t>(Smi::FromInt(StackFrame::INTERNAL)); | 658 value = reinterpret_cast<intptr_t>(Smi::FromInt(StackFrame::INTERNAL)); |
655 output_frame->SetFrameSlot(output_offset, value); | 659 output_frame->SetFrameSlot(output_offset, value); |
656 if (FLAG_trace_deopt) { | 660 if (FLAG_trace_deopt) { |
657 PrintF(" 0x%08" V8PRIxPTR ": [top + %u] <- 0x%08" V8PRIxPTR | 661 PrintF(" 0x%08" V8PRIxPTR ": [top + %u] <- 0x%08" V8PRIxPTR |
658 " ; function (setter sentinel)\n", | 662 " ; function (%s sentinel)\n", |
659 top_address + output_offset, output_offset, value); | 663 top_address + output_offset, output_offset, value, kind); |
660 } | 664 } |
661 | 665 |
662 // Get Code object from setter stub. | 666 // Get Code object from accessor stub. |
663 output_offset -= kPointerSize; | 667 output_offset -= kPointerSize; |
664 Code* setter_stub = | 668 Builtins::Name name = is_setter_stub_frame ? |
665 isolate_->builtins()->builtin(Builtins::kStoreIC_Setter_ForDeopt); | 669 Builtins::kStoreIC_Setter_ForDeopt : |
666 value = reinterpret_cast<intptr_t>(setter_stub); | 670 Builtins::kLoadIC_Getter_ForDeopt; |
| 671 Code* accessor_stub = isolate_->builtins()->builtin(name); |
| 672 value = reinterpret_cast<intptr_t>(accessor_stub); |
667 output_frame->SetFrameSlot(output_offset, value); | 673 output_frame->SetFrameSlot(output_offset, value); |
668 if (FLAG_trace_deopt) { | 674 if (FLAG_trace_deopt) { |
669 PrintF(" 0x%08" V8PRIxPTR ": [top + %u] <- 0x%08" V8PRIxPTR | 675 PrintF(" 0x%08" V8PRIxPTR ": [top + %u] <- 0x%08" V8PRIxPTR |
670 " ; code object\n", | 676 " ; code object\n", |
671 top_address + output_offset, output_offset, value); | 677 top_address + output_offset, output_offset, value); |
672 } | 678 } |
673 | 679 |
674 // Skip receiver. | 680 // Skip receiver. |
675 Translation::Opcode opcode = | 681 Translation::Opcode opcode = |
676 static_cast<Translation::Opcode>(iterator->Next()); | 682 static_cast<Translation::Opcode>(iterator->Next()); |
677 iterator->Skip(Translation::NumberOfOperandsFor(opcode)); | 683 iterator->Skip(Translation::NumberOfOperandsFor(opcode)); |
678 | 684 |
679 // The implicit return value was part of the artificial setter stub | 685 if (is_setter_stub_frame) { |
680 // environment. | 686 // The implicit return value was part of the artificial setter stub |
681 output_offset -= kPointerSize; | 687 // environment. |
682 DoTranslateCommand(iterator, frame_index, output_offset); | 688 output_offset -= kPointerSize; |
| 689 DoTranslateCommand(iterator, frame_index, output_offset); |
| 690 } |
683 | 691 |
684 ASSERT(0 == output_offset); | 692 ASSERT(0 == output_offset); |
685 | 693 |
| 694 Smi* offset = is_setter_stub_frame ? |
| 695 isolate_->heap()->setter_stub_deopt_pc_offset() : |
| 696 isolate_->heap()->getter_stub_deopt_pc_offset(); |
686 intptr_t pc = reinterpret_cast<intptr_t>( | 697 intptr_t pc = reinterpret_cast<intptr_t>( |
687 setter_stub->instruction_start() + | 698 accessor_stub->instruction_start() + offset->value()); |
688 isolate_->heap()->setter_stub_deopt_pc_offset()->value()); | |
689 output_frame->SetPc(pc); | 699 output_frame->SetPc(pc); |
690 } | 700 } |
691 | 701 |
692 | 702 |
693 // This code is very similar to ia32/arm code, but relies on register names | 703 // This code is very similar to ia32/arm code, but relies on register names |
694 // (fp, sp) and how the frame is laid out. | 704 // (fp, sp) and how the frame is laid out. |
695 void Deoptimizer::DoComputeJSFrame(TranslationIterator* iterator, | 705 void Deoptimizer::DoComputeJSFrame(TranslationIterator* iterator, |
696 int frame_index) { | 706 int frame_index) { |
697 // Read the ast node id, function, and frame height for this output frame. | 707 // Read the ast node id, function, and frame height for this output frame. |
698 BailoutId node_id = BailoutId(iterator->Next()); | 708 BailoutId node_id = BailoutId(iterator->Next()); |
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1123 } | 1133 } |
1124 | 1134 |
1125 ASSERT_EQ(masm()->SizeOfCodeGeneratedSince(&table_start), | 1135 ASSERT_EQ(masm()->SizeOfCodeGeneratedSince(&table_start), |
1126 count() * table_entry_size_); | 1136 count() * table_entry_size_); |
1127 } | 1137 } |
1128 | 1138 |
1129 #undef __ | 1139 #undef __ |
1130 | 1140 |
1131 | 1141 |
1132 } } // namespace v8::internal | 1142 } } // namespace v8::internal |
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