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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 // 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 #if V8_TARGET_ARCH_ARM64 | 5 #if V8_TARGET_ARCH_ARM64 |
6 | 6 |
7 #include "src/arm64/frames-arm64.h" | 7 #include "src/arm64/frames-arm64.h" |
8 #include "src/codegen.h" | 8 #include "src/codegen.h" |
9 #include "src/debug/debug.h" | 9 #include "src/debug/debug.h" |
10 #include "src/deoptimizer.h" | 10 #include "src/deoptimizer.h" |
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743 // Store resume mode into generator object. | 743 // Store resume mode into generator object. |
744 __ Str(x2, FieldMemOperand(x1, JSGeneratorObject::kResumeModeOffset)); | 744 __ Str(x2, FieldMemOperand(x1, JSGeneratorObject::kResumeModeOffset)); |
745 | 745 |
746 // Load suspended function and context. | 746 // Load suspended function and context. |
747 __ Ldr(cp, FieldMemOperand(x1, JSGeneratorObject::kContextOffset)); | 747 __ Ldr(cp, FieldMemOperand(x1, JSGeneratorObject::kContextOffset)); |
748 __ Ldr(x4, FieldMemOperand(x1, JSGeneratorObject::kFunctionOffset)); | 748 __ Ldr(x4, FieldMemOperand(x1, JSGeneratorObject::kFunctionOffset)); |
749 | 749 |
750 // Flood function if we are stepping. | 750 // Flood function if we are stepping. |
751 Label prepare_step_in_if_stepping, prepare_step_in_suspended_generator; | 751 Label prepare_step_in_if_stepping, prepare_step_in_suspended_generator; |
752 Label stepping_prepared; | 752 Label stepping_prepared; |
753 ExternalReference last_step_action = | 753 ExternalReference debug_hook = |
754 ExternalReference::debug_last_step_action_address(masm->isolate()); | 754 ExternalReference::debug_hook_on_function_call_address(masm->isolate()); |
755 STATIC_ASSERT(StepFrame > StepIn); | 755 __ Mov(x10, Operand(debug_hook)); |
756 __ Mov(x10, Operand(last_step_action)); | |
757 __ Ldrsb(x10, MemOperand(x10)); | 756 __ Ldrsb(x10, MemOperand(x10)); |
758 __ CompareAndBranch(x10, Operand(StepIn), ge, &prepare_step_in_if_stepping); | 757 __ CompareAndBranch(x10, Operand(0), ne, &prepare_step_in_if_stepping); |
759 | 758 |
760 // Flood function if we need to continue stepping in the suspended generator. | 759 // Flood function if we need to continue stepping in the suspended generator. |
761 ExternalReference debug_suspended_generator = | 760 ExternalReference debug_suspended_generator = |
762 ExternalReference::debug_suspended_generator_address(masm->isolate()); | 761 ExternalReference::debug_suspended_generator_address(masm->isolate()); |
763 __ Mov(x10, Operand(debug_suspended_generator)); | 762 __ Mov(x10, Operand(debug_suspended_generator)); |
764 __ Ldr(x10, MemOperand(x10)); | 763 __ Ldr(x10, MemOperand(x10)); |
765 __ CompareAndBranch(x10, Operand(x1), eq, | 764 __ CompareAndBranch(x10, Operand(x1), eq, |
766 &prepare_step_in_suspended_generator); | 765 &prepare_step_in_suspended_generator); |
767 __ Bind(&stepping_prepared); | 766 __ Bind(&stepping_prepared); |
768 | 767 |
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808 __ Move(x3, x1); | 807 __ Move(x3, x1); |
809 __ Move(x1, x4); | 808 __ Move(x1, x4); |
810 __ Ldr(x5, FieldMemOperand(x1, JSFunction::kCodeEntryOffset)); | 809 __ Ldr(x5, FieldMemOperand(x1, JSFunction::kCodeEntryOffset)); |
811 __ Jump(x5); | 810 __ Jump(x5); |
812 } | 811 } |
813 | 812 |
814 __ Bind(&prepare_step_in_if_stepping); | 813 __ Bind(&prepare_step_in_if_stepping); |
815 { | 814 { |
816 FrameScope scope(masm, StackFrame::INTERNAL); | 815 FrameScope scope(masm, StackFrame::INTERNAL); |
817 __ Push(x1, x2, x4); | 816 __ Push(x1, x2, x4); |
818 __ CallRuntime(Runtime::kDebugPrepareStepInIfStepping); | 817 __ CallRuntime(Runtime::kDebugOnFunctionCall); |
819 __ Pop(x2, x1); | 818 __ Pop(x2, x1); |
820 __ Ldr(x4, FieldMemOperand(x1, JSGeneratorObject::kFunctionOffset)); | 819 __ Ldr(x4, FieldMemOperand(x1, JSGeneratorObject::kFunctionOffset)); |
821 } | 820 } |
822 __ B(&stepping_prepared); | 821 __ B(&stepping_prepared); |
823 | 822 |
824 __ Bind(&prepare_step_in_suspended_generator); | 823 __ Bind(&prepare_step_in_suspended_generator); |
825 { | 824 { |
826 FrameScope scope(masm, StackFrame::INTERNAL); | 825 FrameScope scope(masm, StackFrame::INTERNAL); |
827 __ Push(x1, x2); | 826 __ Push(x1, x2); |
828 __ CallRuntime(Runtime::kDebugPrepareStepInSuspendedGenerator); | 827 __ CallRuntime(Runtime::kDebugPrepareStepInSuspendedGenerator); |
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2998 __ Unreachable(); | 2997 __ Unreachable(); |
2999 } | 2998 } |
3000 } | 2999 } |
3001 | 3000 |
3002 #undef __ | 3001 #undef __ |
3003 | 3002 |
3004 } // namespace internal | 3003 } // namespace internal |
3005 } // namespace v8 | 3004 } // namespace v8 |
3006 | 3005 |
3007 #endif // V8_TARGET_ARCH_ARM | 3006 #endif // V8_TARGET_ARCH_ARM |
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