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Issue 219373004: Do not check for interrupt when allocating stack locals. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 8 months ago
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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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110 }; 110 };
111 111
112 112
113 static void EmitStackCheck(MacroAssembler* masm_, 113 static void EmitStackCheck(MacroAssembler* masm_,
114 int pointers = 0, 114 int pointers = 0,
115 Register scratch = jssp) { 115 Register scratch = jssp) {
116 Isolate* isolate = masm_->isolate(); 116 Isolate* isolate = masm_->isolate();
117 Label ok; 117 Label ok;
118 ASSERT(jssp.Is(__ StackPointer())); 118 ASSERT(jssp.Is(__ StackPointer()));
119 ASSERT(scratch.Is(jssp) == (pointers == 0)); 119 ASSERT(scratch.Is(jssp) == (pointers == 0));
120 Heap::RootListIndex index;
120 if (pointers != 0) { 121 if (pointers != 0) {
121 __ Sub(scratch, jssp, pointers * kPointerSize); 122 __ Sub(scratch, jssp, pointers * kPointerSize);
123 index = Heap::kRealStackLimitRootIndex;
124 } else {
125 index = Heap::kStackLimitRootIndex;
122 } 126 }
123 __ CompareRoot(scratch, Heap::kStackLimitRootIndex); 127 __ CompareRoot(scratch, index);
124 __ B(hs, &ok); 128 __ B(hs, &ok);
125 PredictableCodeSizeScope predictable(masm_, 129 PredictableCodeSizeScope predictable(masm_,
126 Assembler::kCallSizeWithRelocation); 130 Assembler::kCallSizeWithRelocation);
127 __ Call(isolate->builtins()->StackCheck(), RelocInfo::CODE_TARGET); 131 __ Call(isolate->builtins()->StackCheck(), RelocInfo::CODE_TARGET);
128 __ Bind(&ok); 132 __ Bind(&ok);
129 } 133 }
130 134
131 135
132 // Generate code for a JS function. On entry to the function the receiver 136 // Generate code for a JS function. On entry to the function the receiver
133 // and arguments have been pushed on the stack left to right. The actual 137 // and arguments have been pushed on the stack left to right. The actual
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4986 return previous_; 4990 return previous_;
4987 } 4991 }
4988 4992
4989 4993
4990 #undef __ 4994 #undef __
4991 4995
4992 4996
4993 } } // namespace v8::internal 4997 } } // namespace v8::internal
4994 4998
4995 #endif // V8_TARGET_ARCH_ARM64 4999 #endif // V8_TARGET_ARCH_ARM64
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