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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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| 523 unsigned pc_offset = FullCodeGenerator::PcField::decode(pc_and_state); | 523 unsigned pc_offset = FullCodeGenerator::PcField::decode(pc_and_state); |
| 524 intptr_t pc_value = reinterpret_cast<intptr_t>(start + pc_offset); | 524 intptr_t pc_value = reinterpret_cast<intptr_t>(start + pc_offset); |
| 525 output_frame->SetPc(pc_value); | 525 output_frame->SetPc(pc_value); |
| 526 | 526 |
| 527 FullCodeGenerator::State state = | 527 FullCodeGenerator::State state = |
| 528 FullCodeGenerator::StateField::decode(pc_and_state); | 528 FullCodeGenerator::StateField::decode(pc_and_state); |
| 529 output_frame->SetState(Smi::FromInt(state)); | 529 output_frame->SetState(Smi::FromInt(state)); |
| 530 | 530 |
| 531 // Set the continuation for the topmost frame. | 531 // Set the continuation for the topmost frame. |
| 532 if (is_topmost && bailout_type_ != DEBUGGER) { | 532 if (is_topmost && bailout_type_ != DEBUGGER) { |
| 533 Code* continuation = (bailout_type_ == EAGER) | 533 Builtins* builtins = isolate_->builtins(); |
| 534 ? isolate_->builtins()->builtin(Builtins::kNotifyDeoptimized) | 534 Code* continuation = builtins->builtin(Builtins::kNotifyDeoptimized); |
| 535 : isolate_->builtins()->builtin(Builtins::kNotifyLazyDeoptimized); | 535 if (bailout_type_ == LAZY) { |
| 536 continuation = builtins->builtin(Builtins::kNotifyLazyDeoptimized); |
| 537 } else if (bailout_type_ == SOFT) { |
| 538 continuation = builtins->builtin(Builtins::kNotifySoftDeoptimized); |
| 539 } else { |
| 540 ASSERT(bailout_type_ == EAGER); |
| 541 } |
| 536 output_frame->SetContinuation( | 542 output_frame->SetContinuation( |
| 537 reinterpret_cast<intptr_t>(continuation->entry())); | 543 reinterpret_cast<intptr_t>(continuation->entry())); |
| 538 } | 544 } |
| 539 } | 545 } |
| 540 | 546 |
| 541 | 547 |
| 542 void Deoptimizer::FillInputFrame(Address tos, JavaScriptFrame* frame) { | 548 void Deoptimizer::FillInputFrame(Address tos, JavaScriptFrame* frame) { |
| 543 // Set the register values. The values are not important as there are no | 549 // Set the register values. The values are not important as there are no |
| 544 // callee saved registers in JavaScript frames, so all registers are | 550 // callee saved registers in JavaScript frames, so all registers are |
| 545 // spilled. Registers rbp and rsp are set to the correct values though. | 551 // spilled. Registers rbp and rsp are set to the correct values though. |
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| 611 // We use this to keep the value of the fifth argument temporarily. | 617 // We use this to keep the value of the fifth argument temporarily. |
| 612 // Unfortunately we can't store it directly in r8 (used for passing | 618 // Unfortunately we can't store it directly in r8 (used for passing |
| 613 // this on linux), since it is another parameter passing register on windows. | 619 // this on linux), since it is another parameter passing register on windows. |
| 614 Register arg5 = r11; | 620 Register arg5 = r11; |
| 615 | 621 |
| 616 // Get the bailout id from the stack. | 622 // Get the bailout id from the stack. |
| 617 __ movq(arg_reg_3, Operand(rsp, kSavedRegistersAreaSize)); | 623 __ movq(arg_reg_3, Operand(rsp, kSavedRegistersAreaSize)); |
| 618 | 624 |
| 619 // Get the address of the location in the code object if possible | 625 // Get the address of the location in the code object if possible |
| 620 // and compute the fp-to-sp delta in register arg5. | 626 // and compute the fp-to-sp delta in register arg5. |
| 621 if (type() == EAGER) { | 627 if (type() == EAGER || type() == SOFT) { |
| 622 __ Set(arg_reg_4, 0); | 628 __ Set(arg_reg_4, 0); |
| 623 __ lea(arg5, Operand(rsp, kSavedRegistersAreaSize + 1 * kPointerSize)); | 629 __ lea(arg5, Operand(rsp, kSavedRegistersAreaSize + 1 * kPointerSize)); |
| 624 } else { | 630 } else { |
| 625 __ movq(arg_reg_4, | 631 __ movq(arg_reg_4, |
| 626 Operand(rsp, kSavedRegistersAreaSize + 1 * kPointerSize)); | 632 Operand(rsp, kSavedRegistersAreaSize + 1 * kPointerSize)); |
| 627 __ lea(arg5, Operand(rsp, kSavedRegistersAreaSize + 2 * kPointerSize)); | 633 __ lea(arg5, Operand(rsp, kSavedRegistersAreaSize + 2 * kPointerSize)); |
| 628 } | 634 } |
| 629 | 635 |
| 630 __ subq(arg5, rbp); | 636 __ subq(arg5, rbp); |
| 631 __ neg(arg5); | 637 __ neg(arg5); |
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| 662 } | 668 } |
| 663 | 669 |
| 664 // Fill in the double input registers. | 670 // Fill in the double input registers. |
| 665 int double_regs_offset = FrameDescription::double_registers_offset(); | 671 int double_regs_offset = FrameDescription::double_registers_offset(); |
| 666 for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); i++) { | 672 for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); i++) { |
| 667 int dst_offset = i * kDoubleSize + double_regs_offset; | 673 int dst_offset = i * kDoubleSize + double_regs_offset; |
| 668 __ pop(Operand(rbx, dst_offset)); | 674 __ pop(Operand(rbx, dst_offset)); |
| 669 } | 675 } |
| 670 | 676 |
| 671 // Remove the bailout id from the stack. | 677 // Remove the bailout id from the stack. |
| 672 if (type() == EAGER) { | 678 if (type() == EAGER || type() == SOFT) { |
| 673 __ addq(rsp, Immediate(kPointerSize)); | 679 __ addq(rsp, Immediate(kPointerSize)); |
| 674 } else { | 680 } else { |
| 675 __ addq(rsp, Immediate(2 * kPointerSize)); | 681 __ addq(rsp, Immediate(2 * kPointerSize)); |
| 676 } | 682 } |
| 677 | 683 |
| 678 // Compute a pointer to the unwinding limit in register rcx; that is | 684 // Compute a pointer to the unwinding limit in register rcx; that is |
| 679 // the first stack slot not part of the input frame. | 685 // the first stack slot not part of the input frame. |
| 680 __ movq(rcx, Operand(rbx, FrameDescription::frame_size_offset())); | 686 __ movq(rcx, Operand(rbx, FrameDescription::frame_size_offset())); |
| 681 __ addq(rcx, rsp); | 687 __ addq(rcx, rsp); |
| 682 | 688 |
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| 783 } | 789 } |
| 784 __ bind(&done); | 790 __ bind(&done); |
| 785 } | 791 } |
| 786 | 792 |
| 787 #undef __ | 793 #undef __ |
| 788 | 794 |
| 789 | 795 |
| 790 } } // namespace v8::internal | 796 } } // namespace v8::internal |
| 791 | 797 |
| 792 #endif // V8_TARGET_ARCH_X64 | 798 #endif // V8_TARGET_ARCH_X64 |
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