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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/code-factory.h" | 7 #include "src/code-factory.h" |
8 #include "src/codegen.h" | 8 #include "src/codegen.h" |
9 #include "src/deoptimizer.h" | 9 #include "src/deoptimizer.h" |
10 #include "src/full-codegen/full-codegen.h" | 10 #include "src/full-codegen/full-codegen.h" |
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83 // Restore target function and new target. | 83 // Restore target function and new target. |
84 __ Pop(rdx); | 84 __ Pop(rdx); |
85 __ Pop(rdi); | 85 __ Pop(rdi); |
86 __ Pop(rax); | 86 __ Pop(rax); |
87 __ SmiToInteger32(rax, rax); | 87 __ SmiToInteger32(rax, rax); |
88 } | 88 } |
89 __ leap(rbx, FieldOperand(rbx, Code::kHeaderSize)); | 89 __ leap(rbx, FieldOperand(rbx, Code::kHeaderSize)); |
90 __ jmp(rbx); | 90 __ jmp(rbx); |
91 } | 91 } |
92 | 92 |
93 void Builtins::Generate_InstantiateAsmJs(MacroAssembler* masm) { | |
94 // ----------- S t a t e ------------- | |
95 // -- rax : argument count (preserved for callee) | |
96 // -- rdx : new target (preserved for callee) | |
97 // -- rdi : target function (preserved for callee) | |
98 // ----------------------------------- | |
99 Label failed; | |
100 { | |
101 FrameScope scope(masm, StackFrame::INTERNAL); | |
102 // Push the number of arguments to the callee. | |
103 __ Integer32ToSmi(rax, rax); | |
104 __ Push(rax); | |
105 // Push a copy of the target function and the new target. | |
106 __ Push(rdi); | |
107 __ Push(rdx); | |
108 | |
109 // The function. | |
110 __ Push(rdi); | |
111 // Pick the 'stdlib' from the parent frame. | |
112 __ Push(Operand(rsp, 10 * kPointerSize)); | |
Michael Starzinger
2016/06/29 08:29:23
nit: Magic constant '10' is being magic. Can we ex
bradn
2016/06/30 07:59:36
Done.
| |
113 // Pick the 'foreign' from the parent frame. | |
114 __ Push(Operand(rsp, 10 * kPointerSize)); | |
115 // Pick the 'heap' from the parent frame. | |
116 __ Push(Operand(rsp, 10 * kPointerSize)); | |
117 // Call runtime, on success unwind frame, and parent frame. | |
118 __ CallRuntime(Runtime::kInstantiateAsmJs, 4); | |
119 // A smi 0 is returned on failure, an object on success. | |
120 __ JumpIfSmi(rax, &failed, Label::kNear); | |
121 scope.GenerateLeaveFrame(); | |
122 __ ret(4 * kPointerSize); | |
123 | |
124 __ bind(&failed); | |
125 // Restore target function and new target. | |
126 __ Pop(rdx); | |
127 __ Pop(rdi); | |
128 __ Pop(rax); | |
129 __ SmiToInteger32(rax, rax); | |
130 } | |
131 // On failure, tail call into generated baseline code. | |
132 GenerateTailCallToReturnedCode(masm, Runtime::kCompileBaseline); | |
133 } | |
93 | 134 |
94 void Builtins::Generate_InOptimizationQueue(MacroAssembler* masm) { | 135 void Builtins::Generate_InOptimizationQueue(MacroAssembler* masm) { |
95 // Checking whether the queued function is ready for install is optional, | 136 // Checking whether the queued function is ready for install is optional, |
96 // since we come across interrupts and stack checks elsewhere. However, | 137 // since we come across interrupts and stack checks elsewhere. However, |
97 // not checking may delay installing ready functions, and always checking | 138 // not checking may delay installing ready functions, and always checking |
98 // would be quite expensive. A good compromise is to first check against | 139 // would be quite expensive. A good compromise is to first check against |
99 // stack limit as a cue for an interrupt signal. | 140 // stack limit as a cue for an interrupt signal. |
100 Label ok; | 141 Label ok; |
101 __ CompareRoot(rsp, Heap::kStackLimitRootIndex); | 142 __ CompareRoot(rsp, Heap::kStackLimitRootIndex); |
102 __ j(above_equal, &ok); | 143 __ j(above_equal, &ok); |
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3040 __ ret(0); | 3081 __ ret(0); |
3041 } | 3082 } |
3042 | 3083 |
3043 | 3084 |
3044 #undef __ | 3085 #undef __ |
3045 | 3086 |
3046 } // namespace internal | 3087 } // namespace internal |
3047 } // namespace v8 | 3088 } // namespace v8 |
3048 | 3089 |
3049 #endif // V8_TARGET_ARCH_X64 | 3090 #endif // V8_TARGET_ARCH_X64 |
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