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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/ia32/codegen-ia32.h" | 5 #include "src/ia32/codegen-ia32.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_IA32 | 7 #if V8_TARGET_ARCH_IA32 |
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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180 public: | 180 public: |
181 explicit LabelConverter(byte* buffer) : buffer_(buffer) {} | 181 explicit LabelConverter(byte* buffer) : buffer_(buffer) {} |
182 int32_t address(Label* l) const { | 182 int32_t address(Label* l) const { |
183 return reinterpret_cast<int32_t>(buffer_) + l->pos(); | 183 return reinterpret_cast<int32_t>(buffer_) + l->pos(); |
184 } | 184 } |
185 private: | 185 private: |
186 byte* buffer_; | 186 byte* buffer_; |
187 }; | 187 }; |
188 | 188 |
189 | 189 |
190 MemMoveFunction CreateMemMoveFunction() { | 190 MemMoveFunction CreateMemMoveFunction(Isolate* isolate) { |
191 size_t actual_size; | 191 size_t actual_size; |
192 // Allocate buffer in executable space. | 192 // Allocate buffer in executable space. |
193 byte* buffer = | 193 byte* buffer = |
194 static_cast<byte*>(base::OS::Allocate(1 * KB, &actual_size, true)); | 194 static_cast<byte*>(base::OS::Allocate(1 * KB, &actual_size, true)); |
195 if (buffer == NULL) return NULL; | 195 if (buffer == nullptr) return nullptr; |
196 MacroAssembler masm(NULL, buffer, static_cast<int>(actual_size), | 196 MacroAssembler masm(isolate, buffer, static_cast<int>(actual_size), |
197 CodeObjectRequired::kNo); | 197 CodeObjectRequired::kNo); |
198 LabelConverter conv(buffer); | 198 LabelConverter conv(buffer); |
199 | 199 |
200 // Generated code is put into a fixed, unmovable buffer, and not into | 200 // Generated code is put into a fixed, unmovable buffer, and not into |
201 // the V8 heap. We can't, and don't, refer to any relocatable addresses | 201 // the V8 heap. We can't, and don't, refer to any relocatable addresses |
202 // (e.g. the JavaScript nan-object). | 202 // (e.g. the JavaScript nan-object). |
203 | 203 |
204 // 32-bit C declaration function calls pass arguments on stack. | 204 // 32-bit C declaration function calls pass arguments on stack. |
205 | 205 |
206 // Stack layout: | 206 // Stack layout: |
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500 __ mov(eax, Operand(count, times_4, conv.address(&small_handlers))); | 500 __ mov(eax, Operand(count, times_4, conv.address(&small_handlers))); |
501 __ jmp(eax); | 501 __ jmp(eax); |
502 } | 502 } |
503 | 503 |
504 __ bind(&pop_and_return); | 504 __ bind(&pop_and_return); |
505 MemMoveEmitPopAndReturn(&masm); | 505 MemMoveEmitPopAndReturn(&masm); |
506 | 506 |
507 CodeDesc desc; | 507 CodeDesc desc; |
508 masm.GetCode(&desc); | 508 masm.GetCode(&desc); |
509 DCHECK(!RelocInfo::RequiresRelocation(desc)); | 509 DCHECK(!RelocInfo::RequiresRelocation(desc)); |
510 Assembler::FlushICacheWithoutIsolate(buffer, actual_size); | 510 Assembler::FlushICache(isolate, buffer, actual_size); |
511 base::OS::ProtectCode(buffer, actual_size); | 511 base::OS::ProtectCode(buffer, actual_size); |
512 // TODO(jkummerow): It would be nice to register this code creation event | 512 // TODO(jkummerow): It would be nice to register this code creation event |
513 // with the PROFILE / GDBJIT system. | 513 // with the PROFILE / GDBJIT system. |
514 return FUNCTION_CAST<MemMoveFunction>(buffer); | 514 return FUNCTION_CAST<MemMoveFunction>(buffer); |
515 } | 515 } |
516 | 516 |
517 | 517 |
518 #undef __ | 518 #undef __ |
519 | 519 |
520 // ------------------------------------------------------------------------- | 520 // ------------------------------------------------------------------------- |
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1041 CodePatcher patcher(sequence, young_length); | 1041 CodePatcher patcher(sequence, young_length); |
1042 patcher.masm()->call(stub->instruction_start(), RelocInfo::NONE32); | 1042 patcher.masm()->call(stub->instruction_start(), RelocInfo::NONE32); |
1043 } | 1043 } |
1044 } | 1044 } |
1045 | 1045 |
1046 | 1046 |
1047 } // namespace internal | 1047 } // namespace internal |
1048 } // namespace v8 | 1048 } // namespace v8 |
1049 | 1049 |
1050 #endif // V8_TARGET_ARCH_IA32 | 1050 #endif // V8_TARGET_ARCH_IA32 |
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