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Issue 306473004: Reland 21502 - "Move OS::MemCopy and OS::MemMove out of platform to utils" (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 7 months ago
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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 "v8.h" 5 #include "v8.h"
6 6
7 #if V8_TARGET_ARCH_X87 7 #if V8_TARGET_ARCH_X87
8 8
9 #include "codegen.h" 9 #include "codegen.h"
10 #include "heap.h" 10 #include "heap.h"
(...skipping 58 matching lines...) Expand 10 before | Expand all | Expand 10 after
69 public: 69 public:
70 explicit LabelConverter(byte* buffer) : buffer_(buffer) {} 70 explicit LabelConverter(byte* buffer) : buffer_(buffer) {}
71 int32_t address(Label* l) const { 71 int32_t address(Label* l) const {
72 return reinterpret_cast<int32_t>(buffer_) + l->pos(); 72 return reinterpret_cast<int32_t>(buffer_) + l->pos();
73 } 73 }
74 private: 74 private:
75 byte* buffer_; 75 byte* buffer_;
76 }; 76 };
77 77
78 78
79 OS::MemMoveFunction CreateMemMoveFunction() { 79 MemMoveFunction CreateMemMoveFunction() {
80 size_t actual_size; 80 size_t actual_size;
81 // Allocate buffer in executable space. 81 // Allocate buffer in executable space.
82 byte* buffer = static_cast<byte*>(OS::Allocate(1 * KB, &actual_size, true)); 82 byte* buffer = static_cast<byte*>(OS::Allocate(1 * KB, &actual_size, true));
83 if (buffer == NULL) return NULL; 83 if (buffer == NULL) return NULL;
84 MacroAssembler masm(NULL, buffer, static_cast<int>(actual_size)); 84 MacroAssembler masm(NULL, buffer, static_cast<int>(actual_size));
85 LabelConverter conv(buffer); 85 LabelConverter conv(buffer);
86 86
87 // Generated code is put into a fixed, unmovable buffer, and not into 87 // Generated code is put into a fixed, unmovable buffer, and not into
88 // the V8 heap. We can't, and don't, refer to any relocatable addresses 88 // the V8 heap. We can't, and don't, refer to any relocatable addresses
89 // (e.g. the JavaScript nan-object). 89 // (e.g. the JavaScript nan-object).
(...skipping 88 matching lines...) Expand 10 before | Expand all | Expand 10 after
178 __ bind(&pop_and_return); 178 __ bind(&pop_and_return);
179 MemMoveEmitPopAndReturn(&masm); 179 MemMoveEmitPopAndReturn(&masm);
180 180
181 CodeDesc desc; 181 CodeDesc desc;
182 masm.GetCode(&desc); 182 masm.GetCode(&desc);
183 ASSERT(!RelocInfo::RequiresRelocation(desc)); 183 ASSERT(!RelocInfo::RequiresRelocation(desc));
184 CPU::FlushICache(buffer, actual_size); 184 CPU::FlushICache(buffer, actual_size);
185 OS::ProtectCode(buffer, actual_size); 185 OS::ProtectCode(buffer, actual_size);
186 // TODO(jkummerow): It would be nice to register this code creation event 186 // TODO(jkummerow): It would be nice to register this code creation event
187 // with the PROFILE / GDBJIT system. 187 // with the PROFILE / GDBJIT system.
188 return FUNCTION_CAST<OS::MemMoveFunction>(buffer); 188 return FUNCTION_CAST<MemMoveFunction>(buffer);
189 } 189 }
190 190
191 191
192 #undef __ 192 #undef __
193 193
194 // ------------------------------------------------------------------------- 194 // -------------------------------------------------------------------------
195 // Code generators 195 // Code generators
196 196
197 #define __ ACCESS_MASM(masm) 197 #define __ ACCESS_MASM(masm)
198 198
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623 Code* stub = GetCodeAgeStub(isolate, age, parity); 623 Code* stub = GetCodeAgeStub(isolate, age, parity);
624 CodePatcher patcher(sequence, young_length); 624 CodePatcher patcher(sequence, young_length);
625 patcher.masm()->call(stub->instruction_start(), RelocInfo::NONE32); 625 patcher.masm()->call(stub->instruction_start(), RelocInfo::NONE32);
626 } 626 }
627 } 627 }
628 628
629 629
630 } } // namespace v8::internal 630 } } // namespace v8::internal
631 631
632 #endif // V8_TARGET_ARCH_X87 632 #endif // V8_TARGET_ARCH_X87
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