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Side by Side Diff: src/x87/codegen-x87.cc

Issue 358363002: Move platform abstraction to base library (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: updates Created 6 years, 5 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 "src/v8.h" 5 #include "src/v8.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.h" 10 #include "src/heap.h"
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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 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 =
83 static_cast<byte*>(base::OS::Allocate(1 * KB, &actual_size, true));
83 if (buffer == NULL) return NULL; 84 if (buffer == NULL) return NULL;
84 MacroAssembler masm(NULL, buffer, static_cast<int>(actual_size)); 85 MacroAssembler masm(NULL, buffer, static_cast<int>(actual_size));
85 LabelConverter conv(buffer); 86 LabelConverter conv(buffer);
86 87
87 // Generated code is put into a fixed, unmovable buffer, and not into 88 // 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 89 // the V8 heap. We can't, and don't, refer to any relocatable addresses
89 // (e.g. the JavaScript nan-object). 90 // (e.g. the JavaScript nan-object).
90 91
91 // 32-bit C declaration function calls pass arguments on stack. 92 // 32-bit C declaration function calls pass arguments on stack.
92 93
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174 __ mov_b(Operand(dst, 0), eax); 175 __ mov_b(Operand(dst, 0), eax);
175 __ jmp(&backward_loop_1byte); 176 __ jmp(&backward_loop_1byte);
176 } 177 }
177 178
178 __ bind(&pop_and_return); 179 __ bind(&pop_and_return);
179 MemMoveEmitPopAndReturn(&masm); 180 MemMoveEmitPopAndReturn(&masm);
180 181
181 CodeDesc desc; 182 CodeDesc desc;
182 masm.GetCode(&desc); 183 masm.GetCode(&desc);
183 ASSERT(!RelocInfo::RequiresRelocation(desc)); 184 ASSERT(!RelocInfo::RequiresRelocation(desc));
184 CPU::FlushICache(buffer, actual_size); 185 CpuFeatures::FlushICache(buffer, actual_size);
185 OS::ProtectCode(buffer, actual_size); 186 base::OS::ProtectCode(buffer, actual_size);
186 // TODO(jkummerow): It would be nice to register this code creation event 187 // TODO(jkummerow): It would be nice to register this code creation event
187 // with the PROFILE / GDBJIT system. 188 // with the PROFILE / GDBJIT system.
188 return FUNCTION_CAST<MemMoveFunction>(buffer); 189 return FUNCTION_CAST<MemMoveFunction>(buffer);
189 } 190 }
190 191
191 192
192 #undef __ 193 #undef __
193 194
194 // ------------------------------------------------------------------------- 195 // -------------------------------------------------------------------------
195 // Code generators 196 // Code generators
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611 } 612 }
612 613
613 614
614 void Code::PatchPlatformCodeAge(Isolate* isolate, 615 void Code::PatchPlatformCodeAge(Isolate* isolate,
615 byte* sequence, 616 byte* sequence,
616 Code::Age age, 617 Code::Age age,
617 MarkingParity parity) { 618 MarkingParity parity) {
618 uint32_t young_length = isolate->code_aging_helper()->young_sequence_length(); 619 uint32_t young_length = isolate->code_aging_helper()->young_sequence_length();
619 if (age == kNoAgeCodeAge) { 620 if (age == kNoAgeCodeAge) {
620 isolate->code_aging_helper()->CopyYoungSequenceTo(sequence); 621 isolate->code_aging_helper()->CopyYoungSequenceTo(sequence);
621 CPU::FlushICache(sequence, young_length); 622 CpuFeatures::FlushICache(sequence, young_length);
622 } else { 623 } else {
623 Code* stub = GetCodeAgeStub(isolate, age, parity); 624 Code* stub = GetCodeAgeStub(isolate, age, parity);
624 CodePatcher patcher(sequence, young_length); 625 CodePatcher patcher(sequence, young_length);
625 patcher.masm()->call(stub->instruction_start(), RelocInfo::NONE32); 626 patcher.masm()->call(stub->instruction_start(), RelocInfo::NONE32);
626 } 627 }
627 } 628 }
628 629
629 630
630 } } // namespace v8::internal 631 } } // namespace v8::internal
631 632
632 #endif // V8_TARGET_ARCH_X87 633 #endif // V8_TARGET_ARCH_X87
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