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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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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| 1528 // object to the callee and optionally the space to pass the argument | 1528 // object to the callee and optionally the space to pass the argument |
| 1529 // object to the stub failure handler. | 1529 // object to the stub failure handler. |
| 1530 ASSERT(descriptor->register_param_count_ >= 0); | 1530 ASSERT(descriptor->register_param_count_ >= 0); |
| 1531 int height_in_bytes = kPointerSize * descriptor->register_param_count_ + | 1531 int height_in_bytes = kPointerSize * descriptor->register_param_count_ + |
| 1532 sizeof(Arguments) + kPointerSize; | 1532 sizeof(Arguments) + kPointerSize; |
| 1533 int fixed_frame_size = StandardFrameConstants::kFixedFrameSize; | 1533 int fixed_frame_size = StandardFrameConstants::kFixedFrameSize; |
| 1534 int input_frame_size = input_->GetFrameSize(); | 1534 int input_frame_size = input_->GetFrameSize(); |
| 1535 int output_frame_size = height_in_bytes + fixed_frame_size; | 1535 int output_frame_size = height_in_bytes + fixed_frame_size; |
| 1536 if (trace_scope_ != NULL) { | 1536 if (trace_scope_ != NULL) { |
| 1537 PrintF(trace_scope_->file(), | 1537 PrintF(trace_scope_->file(), |
| 1538 " translating %s => StubFailure%sTrampolineStub, height=%d\n", | 1538 " translating %s => StubFailureTrampolineStub, height=%d\n", |
| 1539 CodeStub::MajorName(static_cast<CodeStub::Major>(major_key), false), | 1539 CodeStub::MajorName(static_cast<CodeStub::Major>(major_key), false), |
| 1540 descriptor->HasTailCallContinuation() ? "TailCall" : "", | |
| 1541 height_in_bytes); | 1540 height_in_bytes); |
| 1542 } | 1541 } |
| 1543 | 1542 |
| 1544 // The stub failure trampoline is a single frame. | 1543 // The stub failure trampoline is a single frame. |
| 1545 FrameDescription* output_frame = | 1544 FrameDescription* output_frame = |
| 1546 new(output_frame_size) FrameDescription(output_frame_size, NULL); | 1545 new(output_frame_size) FrameDescription(output_frame_size, NULL); |
| 1547 output_frame->SetFrameType(StackFrame::STUB_FAILURE_TRAMPOLINE); | 1546 output_frame->SetFrameType(StackFrame::STUB_FAILURE_TRAMPOLINE); |
| 1548 ASSERT(frame_index == 0); | 1547 ASSERT(frame_index == 0); |
| 1549 output_[frame_index] = output_frame; | 1548 output_[frame_index] = output_frame; |
| 1550 | 1549 |
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| 1619 value = reinterpret_cast<intptr_t>( | 1618 value = reinterpret_cast<intptr_t>( |
| 1620 Smi::FromInt(StackFrame::STUB_FAILURE_TRAMPOLINE)); | 1619 Smi::FromInt(StackFrame::STUB_FAILURE_TRAMPOLINE)); |
| 1621 output_frame->SetFrameSlot(output_frame_offset, value); | 1620 output_frame->SetFrameSlot(output_frame_offset, value); |
| 1622 if (trace_scope_ != NULL) { | 1621 if (trace_scope_ != NULL) { |
| 1623 PrintF(trace_scope_->file(), | 1622 PrintF(trace_scope_->file(), |
| 1624 " 0x%08" V8PRIxPTR ": [top + %d] <- 0x%08" | 1623 " 0x%08" V8PRIxPTR ": [top + %d] <- 0x%08" |
| 1625 V8PRIxPTR " ; function (stub failure sentinel)\n", | 1624 V8PRIxPTR " ; function (stub failure sentinel)\n", |
| 1626 top_address + output_frame_offset, output_frame_offset, value); | 1625 top_address + output_frame_offset, output_frame_offset, value); |
| 1627 } | 1626 } |
| 1628 | 1627 |
| 1629 intptr_t caller_arg_count = descriptor->HasTailCallContinuation() | 1628 intptr_t caller_arg_count = 0; |
| 1630 ? compiled_code_->arguments_count() + 1 : 0; | |
| 1631 bool arg_count_known = !descriptor->stack_parameter_count_.is_valid(); | 1629 bool arg_count_known = !descriptor->stack_parameter_count_.is_valid(); |
| 1632 | 1630 |
| 1633 // Build the Arguments object for the caller's parameters and a pointer to it. | 1631 // Build the Arguments object for the caller's parameters and a pointer to it. |
| 1634 output_frame_offset -= kPointerSize; | 1632 output_frame_offset -= kPointerSize; |
| 1635 int args_arguments_offset = output_frame_offset; | 1633 int args_arguments_offset = output_frame_offset; |
| 1636 intptr_t the_hole = reinterpret_cast<intptr_t>( | 1634 intptr_t the_hole = reinterpret_cast<intptr_t>( |
| 1637 isolate_->heap()->the_hole_value()); | 1635 isolate_->heap()->the_hole_value()); |
| 1638 if (arg_count_known) { | 1636 if (arg_count_known) { |
| 1639 value = frame_ptr + StandardFrameConstants::kCallerSPOffset + | 1637 value = frame_ptr + StandardFrameConstants::kCallerSPOffset + |
| 1640 (caller_arg_count - 1) * kPointerSize; | 1638 (caller_arg_count - 1) * kPointerSize; |
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| 1716 } | 1714 } |
| 1717 | 1715 |
| 1718 // Copy the double registers from the input into the output frame. | 1716 // Copy the double registers from the input into the output frame. |
| 1719 CopyDoubleRegisters(output_frame); | 1717 CopyDoubleRegisters(output_frame); |
| 1720 | 1718 |
| 1721 // Fill registers containing handler and number of parameters. | 1719 // Fill registers containing handler and number of parameters. |
| 1722 SetPlatformCompiledStubRegisters(output_frame, descriptor); | 1720 SetPlatformCompiledStubRegisters(output_frame, descriptor); |
| 1723 | 1721 |
| 1724 // Compute this frame's PC, state, and continuation. | 1722 // Compute this frame's PC, state, and continuation. |
| 1725 Code* trampoline = NULL; | 1723 Code* trampoline = NULL; |
| 1726 if (descriptor->HasTailCallContinuation()) { | 1724 StubFunctionMode function_mode = descriptor->function_mode_; |
| 1727 StubFailureTailCallTrampolineStub().FindCodeInCache(&trampoline, isolate_); | 1725 StubFailureTrampolineStub(function_mode).FindCodeInCache(&trampoline, |
| 1728 } else { | 1726 isolate_); |
| 1729 StubFunctionMode function_mode = descriptor->function_mode_; | |
| 1730 StubFailureTrampolineStub(function_mode).FindCodeInCache(&trampoline, | |
| 1731 isolate_); | |
| 1732 } | |
| 1733 ASSERT(trampoline != NULL); | 1727 ASSERT(trampoline != NULL); |
| 1734 output_frame->SetPc(reinterpret_cast<intptr_t>( | 1728 output_frame->SetPc(reinterpret_cast<intptr_t>( |
| 1735 trampoline->instruction_start())); | 1729 trampoline->instruction_start())); |
| 1736 output_frame->SetState(Smi::FromInt(FullCodeGenerator::NO_REGISTERS)); | 1730 output_frame->SetState(Smi::FromInt(FullCodeGenerator::NO_REGISTERS)); |
| 1737 Code* notify_failure = NotifyStubFailureBuiltin(); | 1731 Code* notify_failure = NotifyStubFailureBuiltin(); |
| 1738 output_frame->SetContinuation( | 1732 output_frame->SetContinuation( |
| 1739 reinterpret_cast<intptr_t>(notify_failure->entry())); | 1733 reinterpret_cast<intptr_t>(notify_failure->entry())); |
| 1740 } | 1734 } |
| 1741 | 1735 |
| 1742 | 1736 |
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| 3463 | 3457 |
| 3464 void DeoptimizedFrameInfo::Iterate(ObjectVisitor* v) { | 3458 void DeoptimizedFrameInfo::Iterate(ObjectVisitor* v) { |
| 3465 v->VisitPointer(BitCast<Object**>(&function_)); | 3459 v->VisitPointer(BitCast<Object**>(&function_)); |
| 3466 v->VisitPointers(parameters_, parameters_ + parameters_count_); | 3460 v->VisitPointers(parameters_, parameters_ + parameters_count_); |
| 3467 v->VisitPointers(expression_stack_, expression_stack_ + expression_count_); | 3461 v->VisitPointers(expression_stack_, expression_stack_ + expression_count_); |
| 3468 } | 3462 } |
| 3469 | 3463 |
| 3470 #endif // ENABLE_DEBUGGER_SUPPORT | 3464 #endif // ENABLE_DEBUGGER_SUPPORT |
| 3471 | 3465 |
| 3472 } } // namespace v8::internal | 3466 } } // namespace v8::internal |
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