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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 // 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_X64 | 5 #if V8_TARGET_ARCH_X64 |
6 | 6 |
7 #include "src/debug/debug.h" | 7 #include "src/debug/debug.h" |
8 | 8 |
9 #include "src/assembler.h" | 9 #include "src/assembler.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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122 // We do not know our frame height, but set rsp based on rbp. | 122 // We do not know our frame height, but set rsp based on rbp. |
123 __ leap(rsp, Operand(rbp, FrameDropperFrameConstants::kFunctionOffset)); | 123 __ leap(rsp, Operand(rbp, FrameDropperFrameConstants::kFunctionOffset)); |
124 __ Pop(rdi); // Function. | 124 __ Pop(rdi); // Function. |
125 __ addp(rsp, | 125 __ addp(rsp, |
126 Immediate(-FrameDropperFrameConstants::kCodeOffset)); // INTERNAL | 126 Immediate(-FrameDropperFrameConstants::kCodeOffset)); // INTERNAL |
127 // frame marker | 127 // frame marker |
128 // and code | 128 // and code |
129 __ popq(rbp); | 129 __ popq(rbp); |
130 | 130 |
131 ParameterCount dummy(0); | 131 ParameterCount dummy(0); |
132 __ FloodFunctionIfStepping(rdi, no_reg, dummy, dummy); | 132 __ CheckDebugHook(rdi, no_reg, dummy, dummy); |
133 | 133 |
134 // Load context from the function. | 134 // Load context from the function. |
135 __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); | 135 __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); |
136 | 136 |
137 // Clear new.target as a safety measure. | 137 // Clear new.target as a safety measure. |
138 __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex); | 138 __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex); |
139 | 139 |
140 // Get function code. | 140 // Get function code. |
141 __ movp(rbx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); | 141 __ movp(rbx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); |
142 __ movp(rbx, FieldOperand(rbx, SharedFunctionInfo::kCodeOffset)); | 142 __ movp(rbx, FieldOperand(rbx, SharedFunctionInfo::kCodeOffset)); |
143 __ leap(rbx, FieldOperand(rbx, Code::kHeaderSize)); | 143 __ leap(rbx, FieldOperand(rbx, Code::kHeaderSize)); |
144 | 144 |
145 // Re-run JSFunction, rdi is function, rsi is context. | 145 // Re-run JSFunction, rdi is function, rsi is context. |
146 __ jmp(rbx); | 146 __ jmp(rbx); |
147 } | 147 } |
148 | 148 |
149 const bool LiveEdit::kFrameDropperSupported = true; | 149 const bool LiveEdit::kFrameDropperSupported = true; |
150 | 150 |
151 #undef __ | 151 #undef __ |
152 | 152 |
153 } // namespace internal | 153 } // namespace internal |
154 } // namespace v8 | 154 } // namespace v8 |
155 | 155 |
156 #endif // V8_TARGET_ARCH_X64 | 156 #endif // V8_TARGET_ARCH_X64 |
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