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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 #include "src/x87/codegen-x87.h" | 5 #include "src/x87/codegen-x87.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_X87 | 7 #if V8_TARGET_ARCH_X87 |
8 | 8 |
9 #include "src/codegen.h" | 9 #include "src/codegen.h" |
10 #include "src/heap/heap.h" | 10 #include "src/heap/heap.h" |
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39 } | 39 } |
40 | 40 |
41 | 41 |
42 UnaryMathFunction CreateSqrtFunction() { | 42 UnaryMathFunction CreateSqrtFunction() { |
43 size_t actual_size; | 43 size_t actual_size; |
44 // Allocate buffer in executable space. | 44 // Allocate buffer in executable space. |
45 byte* buffer = | 45 byte* buffer = |
46 static_cast<byte*>(base::OS::Allocate(1 * KB, &actual_size, true)); | 46 static_cast<byte*>(base::OS::Allocate(1 * KB, &actual_size, true)); |
47 if (buffer == NULL) return &std::sqrt; | 47 if (buffer == NULL) return &std::sqrt; |
48 | 48 |
49 MacroAssembler masm(NULL, buffer, static_cast<int>(actual_size)); | 49 MacroAssembler masm(NULL, buffer, static_cast<int>(actual_size), false); |
50 // Load double input into registers. | 50 // Load double input into registers. |
51 __ fld_d(MemOperand(esp, 4)); | 51 __ fld_d(MemOperand(esp, 4)); |
52 __ X87SetFPUCW(0x027F); | 52 __ X87SetFPUCW(0x027F); |
53 __ fsqrt(); | 53 __ fsqrt(); |
54 __ X87SetFPUCW(0x037F); | 54 __ X87SetFPUCW(0x037F); |
55 __ Ret(); | 55 __ Ret(); |
56 | 56 |
57 CodeDesc desc; | 57 CodeDesc desc; |
58 masm.GetCode(&desc); | 58 masm.GetCode(&desc); |
59 DCHECK(!RelocInfo::RequiresRelocation(desc)); | 59 DCHECK(!RelocInfo::RequiresRelocation(desc)); |
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93 byte* buffer_; | 93 byte* buffer_; |
94 }; | 94 }; |
95 | 95 |
96 | 96 |
97 MemMoveFunction CreateMemMoveFunction() { | 97 MemMoveFunction CreateMemMoveFunction() { |
98 size_t actual_size; | 98 size_t actual_size; |
99 // Allocate buffer in executable space. | 99 // Allocate buffer in executable space. |
100 byte* buffer = | 100 byte* buffer = |
101 static_cast<byte*>(base::OS::Allocate(1 * KB, &actual_size, true)); | 101 static_cast<byte*>(base::OS::Allocate(1 * KB, &actual_size, true)); |
102 if (buffer == NULL) return NULL; | 102 if (buffer == NULL) return NULL; |
103 MacroAssembler masm(NULL, buffer, static_cast<int>(actual_size)); | 103 MacroAssembler masm(NULL, buffer, static_cast<int>(actual_size), false); |
104 LabelConverter conv(buffer); | 104 LabelConverter conv(buffer); |
105 | 105 |
106 // Generated code is put into a fixed, unmovable buffer, and not into | 106 // Generated code is put into a fixed, unmovable buffer, and not into |
107 // the V8 heap. We can't, and don't, refer to any relocatable addresses | 107 // the V8 heap. We can't, and don't, refer to any relocatable addresses |
108 // (e.g. the JavaScript nan-object). | 108 // (e.g. the JavaScript nan-object). |
109 | 109 |
110 // 32-bit C declaration function calls pass arguments on stack. | 110 // 32-bit C declaration function calls pass arguments on stack. |
111 | 111 |
112 // Stack layout: | 112 // Stack layout: |
113 // esp[12]: Third argument, size. | 113 // esp[12]: Third argument, size. |
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641 CodePatcher patcher(sequence, young_length); | 641 CodePatcher patcher(sequence, young_length); |
642 patcher.masm()->call(stub->instruction_start(), RelocInfo::NONE32); | 642 patcher.masm()->call(stub->instruction_start(), RelocInfo::NONE32); |
643 } | 643 } |
644 } | 644 } |
645 | 645 |
646 | 646 |
647 } // namespace internal | 647 } // namespace internal |
648 } // namespace v8 | 648 } // namespace v8 |
649 | 649 |
650 #endif // V8_TARGET_ARCH_X87 | 650 #endif // V8_TARGET_ARCH_X87 |
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