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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 | 10 |
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123 ExternalReference after_break_target = | 123 ExternalReference after_break_target = |
124 ExternalReference::debug_after_break_target_address(masm->isolate()); | 124 ExternalReference::debug_after_break_target_address(masm->isolate()); |
125 __ Mov(scratch, after_break_target); | 125 __ Mov(scratch, after_break_target); |
126 __ Ldr(scratch, MemOperand(scratch)); | 126 __ Ldr(scratch, MemOperand(scratch)); |
127 __ Br(scratch); | 127 __ Br(scratch); |
128 } | 128 } |
129 | 129 |
130 | 130 |
131 void DebugCodegen::GenerateFrameDropperLiveEdit(MacroAssembler* masm) { | 131 void DebugCodegen::GenerateFrameDropperLiveEdit(MacroAssembler* masm) { |
132 // We do not know our frame height, but set sp based on fp. | 132 // We do not know our frame height, but set sp based on fp. |
133 __ Sub(masm->StackPointer(), fp, kPointerSize); | 133 __ Add(masm->StackPointer(), fp, FrameDropperFrameConstants::kFunctionOffset); |
134 __ AssertStackConsistency(); | 134 __ AssertStackConsistency(); |
135 | 135 |
136 __ Pop(x1, fp, lr); // Function, Frame, Return address. | 136 __ Pop(x1); // Function |
| 137 __ Mov(masm->StackPointer(), Operand(fp)); |
| 138 __ Pop(fp, lr); // Frame, Return address. |
137 | 139 |
138 ParameterCount dummy(0); | 140 ParameterCount dummy(0); |
139 __ FloodFunctionIfStepping(x1, no_reg, dummy, dummy); | 141 __ FloodFunctionIfStepping(x1, no_reg, dummy, dummy); |
140 | 142 |
141 UseScratchRegisterScope temps(masm); | 143 UseScratchRegisterScope temps(masm); |
142 Register scratch = temps.AcquireX(); | 144 Register scratch = temps.AcquireX(); |
143 | 145 |
144 // Load context from the function. | 146 // Load context from the function. |
145 __ Ldr(cp, FieldMemOperand(x1, JSFunction::kContextOffset)); | 147 __ Ldr(cp, FieldMemOperand(x1, JSFunction::kContextOffset)); |
146 | 148 |
147 // Clear new.target as a safety measure. | 149 // Clear new.target as a safety measure. |
148 __ LoadRoot(x3, Heap::kUndefinedValueRootIndex); | 150 __ LoadRoot(x3, Heap::kUndefinedValueRootIndex); |
149 | 151 |
150 // Get function code. | 152 // Get function code. |
151 __ Ldr(scratch, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset)); | 153 __ Ldr(scratch, FieldMemOperand(x1, JSFunction::kSharedFunctionInfoOffset)); |
152 __ Ldr(scratch, FieldMemOperand(scratch, SharedFunctionInfo::kCodeOffset)); | 154 __ Ldr(scratch, FieldMemOperand(scratch, SharedFunctionInfo::kCodeOffset)); |
153 __ Add(scratch, scratch, Code::kHeaderSize - kHeapObjectTag); | 155 __ Add(scratch, scratch, Code::kHeaderSize - kHeapObjectTag); |
154 | 156 |
155 // Re-run JSFunction, x1 is function, cp is context. | 157 // Re-run JSFunction, x1 is function, cp is context. |
156 __ Br(scratch); | 158 __ Br(scratch); |
157 } | 159 } |
158 | 160 |
159 | 161 |
160 const bool LiveEdit::kFrameDropperSupported = true; | 162 const bool LiveEdit::kFrameDropperSupported = true; |
161 | 163 |
162 } // namespace internal | 164 } // namespace internal |
163 } // namespace v8 | 165 } // namespace v8 |
164 | 166 |
165 #endif // V8_TARGET_ARCH_ARM64 | 167 #endif // V8_TARGET_ARCH_ARM64 |
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