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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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440 builtins->builtin(Builtins::kArgumentsAdaptorTrampoline); | 440 builtins->builtin(Builtins::kArgumentsAdaptorTrampoline); |
441 uint32_t pc = reinterpret_cast<uint32_t>( | 441 uint32_t pc = reinterpret_cast<uint32_t>( |
442 adaptor_trampoline->instruction_start() + | 442 adaptor_trampoline->instruction_start() + |
443 isolate_->heap()->arguments_adaptor_deopt_pc_offset()->value()); | 443 isolate_->heap()->arguments_adaptor_deopt_pc_offset()->value()); |
444 output_frame->SetPc(pc); | 444 output_frame->SetPc(pc); |
445 } | 445 } |
446 | 446 |
447 | 447 |
448 void Deoptimizer::DoComputeConstructStubFrame(TranslationIterator* iterator, | 448 void Deoptimizer::DoComputeConstructStubFrame(TranslationIterator* iterator, |
449 int frame_index) { | 449 int frame_index) { |
| 450 Builtins* builtins = isolate_->builtins(); |
| 451 Code* construct_stub = builtins->builtin(Builtins::kJSConstructStubGeneric); |
450 JSFunction* function = JSFunction::cast(ComputeLiteral(iterator->Next())); | 452 JSFunction* function = JSFunction::cast(ComputeLiteral(iterator->Next())); |
451 unsigned height = iterator->Next(); | 453 unsigned height = iterator->Next(); |
452 unsigned height_in_bytes = height * kPointerSize; | 454 unsigned height_in_bytes = height * kPointerSize; |
453 if (FLAG_trace_deopt) { | 455 if (FLAG_trace_deopt) { |
454 PrintF(" translating construct stub => height=%d\n", height_in_bytes); | 456 PrintF(" translating construct stub => height=%d\n", height_in_bytes); |
455 } | 457 } |
456 | 458 |
457 unsigned fixed_frame_size = 7 * kPointerSize; | 459 unsigned fixed_frame_size = 8 * kPointerSize; |
458 unsigned output_frame_size = height_in_bytes + fixed_frame_size; | 460 unsigned output_frame_size = height_in_bytes + fixed_frame_size; |
459 | 461 |
460 // Allocate and store the output frame description. | 462 // Allocate and store the output frame description. |
461 FrameDescription* output_frame = | 463 FrameDescription* output_frame = |
462 new(output_frame_size) FrameDescription(output_frame_size, function); | 464 new(output_frame_size) FrameDescription(output_frame_size, function); |
463 output_frame->SetFrameType(StackFrame::CONSTRUCT); | 465 output_frame->SetFrameType(StackFrame::CONSTRUCT); |
464 | 466 |
465 // Construct stub can not be topmost or bottommost. | 467 // Construct stub can not be topmost or bottommost. |
466 ASSERT(frame_index > 0 && frame_index < output_count_ - 1); | 468 ASSERT(frame_index > 0 && frame_index < output_count_ - 1); |
467 ASSERT(output_[frame_index] == NULL); | 469 ASSERT(output_[frame_index] == NULL); |
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512 | 514 |
513 // A marker value is used in place of the function. | 515 // A marker value is used in place of the function. |
514 output_offset -= kPointerSize; | 516 output_offset -= kPointerSize; |
515 value = reinterpret_cast<intptr_t>(Smi::FromInt(StackFrame::CONSTRUCT)); | 517 value = reinterpret_cast<intptr_t>(Smi::FromInt(StackFrame::CONSTRUCT)); |
516 output_frame->SetFrameSlot(output_offset, value); | 518 output_frame->SetFrameSlot(output_offset, value); |
517 if (FLAG_trace_deopt) { | 519 if (FLAG_trace_deopt) { |
518 PrintF(" 0x%08x: [top + %d] <- 0x%08x ; function (construct sentinel)\n", | 520 PrintF(" 0x%08x: [top + %d] <- 0x%08x ; function (construct sentinel)\n", |
519 top_address + output_offset, output_offset, value); | 521 top_address + output_offset, output_offset, value); |
520 } | 522 } |
521 | 523 |
| 524 // The output frame reflects a JSConstructStubGeneric frame. |
| 525 output_offset -= kPointerSize; |
| 526 value = reinterpret_cast<intptr_t>(construct_stub); |
| 527 output_frame->SetFrameSlot(output_offset, value); |
| 528 if (FLAG_trace_deopt) { |
| 529 PrintF(" 0x%08x: [top + %d] <- 0x%08x ; code object\n", |
| 530 top_address + output_offset, output_offset, value); |
| 531 } |
| 532 |
522 // Number of incoming arguments. | 533 // Number of incoming arguments. |
523 output_offset -= kPointerSize; | 534 output_offset -= kPointerSize; |
524 value = reinterpret_cast<uint32_t>(Smi::FromInt(height - 1)); | 535 value = reinterpret_cast<uint32_t>(Smi::FromInt(height - 1)); |
525 output_frame->SetFrameSlot(output_offset, value); | 536 output_frame->SetFrameSlot(output_offset, value); |
526 if (FLAG_trace_deopt) { | 537 if (FLAG_trace_deopt) { |
527 PrintF(" 0x%08x: [top + %d] <- 0x%08x ; argc (%d)\n", | 538 PrintF(" 0x%08x: [top + %d] <- 0x%08x ; argc (%d)\n", |
528 top_address + output_offset, output_offset, value, height - 1); | 539 top_address + output_offset, output_offset, value, height - 1); |
529 } | 540 } |
530 | 541 |
531 // Constructor function being invoked by the stub. | 542 // Constructor function being invoked by the stub. |
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542 output_offset -= kPointerSize; | 553 output_offset -= kPointerSize; |
543 value = output_frame->GetFrameSlot(output_frame_size - kPointerSize); | 554 value = output_frame->GetFrameSlot(output_frame_size - kPointerSize); |
544 output_frame->SetFrameSlot(output_offset, value); | 555 output_frame->SetFrameSlot(output_offset, value); |
545 if (FLAG_trace_deopt) { | 556 if (FLAG_trace_deopt) { |
546 PrintF(" 0x%08x: [top + %d] <- 0x%08x ; allocated receiver\n", | 557 PrintF(" 0x%08x: [top + %d] <- 0x%08x ; allocated receiver\n", |
547 top_address + output_offset, output_offset, value); | 558 top_address + output_offset, output_offset, value); |
548 } | 559 } |
549 | 560 |
550 ASSERT(0 == output_offset); | 561 ASSERT(0 == output_offset); |
551 | 562 |
552 Builtins* builtins = isolate_->builtins(); | |
553 Code* construct_stub = builtins->builtin(Builtins::kJSConstructStubGeneric); | |
554 uint32_t pc = reinterpret_cast<uint32_t>( | 563 uint32_t pc = reinterpret_cast<uint32_t>( |
555 construct_stub->instruction_start() + | 564 construct_stub->instruction_start() + |
556 isolate_->heap()->construct_stub_deopt_pc_offset()->value()); | 565 isolate_->heap()->construct_stub_deopt_pc_offset()->value()); |
557 output_frame->SetPc(pc); | 566 output_frame->SetPc(pc); |
558 } | 567 } |
559 | 568 |
560 | 569 |
561 // This code is very similar to ia32/arm code, but relies on register names | 570 // This code is very similar to ia32/arm code, but relies on register names |
562 // (fp, sp) and how the frame is laid out. | 571 // (fp, sp) and how the frame is laid out. |
563 void Deoptimizer::DoComputeJSFrame(TranslationIterator* iterator, | 572 void Deoptimizer::DoComputeJSFrame(TranslationIterator* iterator, |
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983 } | 992 } |
984 | 993 |
985 ASSERT_EQ(masm()->SizeOfCodeGeneratedSince(&table_start), | 994 ASSERT_EQ(masm()->SizeOfCodeGeneratedSince(&table_start), |
986 count() * table_entry_size_); | 995 count() * table_entry_size_); |
987 } | 996 } |
988 | 997 |
989 #undef __ | 998 #undef __ |
990 | 999 |
991 | 1000 |
992 } } // namespace v8::internal | 1001 } } // namespace v8::internal |
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