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| 2 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 2 // Copyright (c) 1994-2006 Sun Microsystems Inc. |
| 3 // All Rights Reserved. | 3 // All Rights Reserved. |
| 4 // | 4 // |
| 5 // Redistribution and use in source and binary forms, with or without | 5 // Redistribution and use in source and binary forms, with or without |
| 6 // modification, are permitted provided that the following conditions are | 6 // modification, are permitted provided that the following conditions are |
| 7 // met: | 7 // met: |
| 8 // | 8 // |
| 9 // - Redistributions of source code must retain the above copyright notice, | 9 // - Redistributions of source code must retain the above copyright notice, |
| 10 // this list of conditions and the following disclaimer. | 10 // this list of conditions and the following disclaimer. |
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| 135 | 135 |
| 136 int RelocInfo::target_address_size() { | 136 int RelocInfo::target_address_size() { |
| 137 return Assembler::kSpecialTargetSize; | 137 return Assembler::kSpecialTargetSize; |
| 138 } | 138 } |
| 139 | 139 |
| 140 | 140 |
| 141 void RelocInfo::set_target_address(Address target, | 141 void RelocInfo::set_target_address(Address target, |
| 142 WriteBarrierMode write_barrier_mode, | 142 WriteBarrierMode write_barrier_mode, |
| 143 ICacheFlushMode icache_flush_mode) { | 143 ICacheFlushMode icache_flush_mode) { |
| 144 DCHECK(IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_)); | 144 DCHECK(IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_)); |
| 145 Assembler::set_target_address_at(pc_, host_, target, icache_flush_mode); | 145 Assembler::set_target_address_at(isolate_, pc_, host_, target, |
| 146 icache_flush_mode); |
| 146 if (write_barrier_mode == UPDATE_WRITE_BARRIER && | 147 if (write_barrier_mode == UPDATE_WRITE_BARRIER && |
| 147 host() != NULL && IsCodeTarget(rmode_)) { | 148 host() != NULL && IsCodeTarget(rmode_)) { |
| 148 Object* target_code = Code::GetCodeFromTargetAddress(target); | 149 Object* target_code = Code::GetCodeFromTargetAddress(target); |
| 149 host()->GetHeap()->incremental_marking()->RecordWriteIntoCode( | 150 host()->GetHeap()->incremental_marking()->RecordWriteIntoCode( |
| 150 host(), this, HeapObject::cast(target_code)); | 151 host(), this, HeapObject::cast(target_code)); |
| 151 } | 152 } |
| 152 } | 153 } |
| 153 | 154 |
| 154 | 155 |
| 155 Address Assembler::target_address_from_return_address(Address pc) { | 156 Address Assembler::target_address_from_return_address(Address pc) { |
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| 172 instr_lui | ((imm >> kLuiShift) & kImm16Mask)); | 173 instr_lui | ((imm >> kLuiShift) & kImm16Mask)); |
| 173 Assembler::instr_at_put(pc + 1 * Assembler::kInstrSize, | 174 Assembler::instr_at_put(pc + 1 * Assembler::kInstrSize, |
| 174 instr_ori | (imm & kImm16Mask)); | 175 instr_ori | (imm & kImm16Mask)); |
| 175 | 176 |
| 176 // Currently used only by deserializer, and all code will be flushed | 177 // Currently used only by deserializer, and all code will be flushed |
| 177 // after complete deserialization, no need to flush on each reference. | 178 // after complete deserialization, no need to flush on each reference. |
| 178 } | 179 } |
| 179 | 180 |
| 180 | 181 |
| 181 void Assembler::deserialization_set_target_internal_reference_at( | 182 void Assembler::deserialization_set_target_internal_reference_at( |
| 182 Address pc, Address target, RelocInfo::Mode mode) { | 183 Isolate* isolate, Address pc, Address target, RelocInfo::Mode mode) { |
| 183 if (mode == RelocInfo::INTERNAL_REFERENCE_ENCODED) { | 184 if (mode == RelocInfo::INTERNAL_REFERENCE_ENCODED) { |
| 184 DCHECK(IsLui(instr_at(pc))); | 185 DCHECK(IsLui(instr_at(pc))); |
| 185 set_target_internal_reference_encoded_at(pc, target); | 186 set_target_internal_reference_encoded_at(pc, target); |
| 186 } else { | 187 } else { |
| 187 DCHECK(mode == RelocInfo::INTERNAL_REFERENCE); | 188 DCHECK(mode == RelocInfo::INTERNAL_REFERENCE); |
| 188 Memory::Address_at(pc) = target; | 189 Memory::Address_at(pc) = target; |
| 189 } | 190 } |
| 190 } | 191 } |
| 191 | 192 |
| 192 | 193 |
| 193 Object* RelocInfo::target_object() { | 194 Object* RelocInfo::target_object() { |
| 194 DCHECK(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT); | 195 DCHECK(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT); |
| 195 return reinterpret_cast<Object*>(Assembler::target_address_at(pc_, host_)); | 196 return reinterpret_cast<Object*>(Assembler::target_address_at(pc_, host_)); |
| 196 } | 197 } |
| 197 | 198 |
| 198 | 199 |
| 199 Handle<Object> RelocInfo::target_object_handle(Assembler* origin) { | 200 Handle<Object> RelocInfo::target_object_handle(Assembler* origin) { |
| 200 DCHECK(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT); | 201 DCHECK(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT); |
| 201 return Handle<Object>(reinterpret_cast<Object**>( | 202 return Handle<Object>(reinterpret_cast<Object**>( |
| 202 Assembler::target_address_at(pc_, host_))); | 203 Assembler::target_address_at(pc_, host_))); |
| 203 } | 204 } |
| 204 | 205 |
| 205 | 206 |
| 206 void RelocInfo::set_target_object(Object* target, | 207 void RelocInfo::set_target_object(Object* target, |
| 207 WriteBarrierMode write_barrier_mode, | 208 WriteBarrierMode write_barrier_mode, |
| 208 ICacheFlushMode icache_flush_mode) { | 209 ICacheFlushMode icache_flush_mode) { |
| 209 DCHECK(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT); | 210 DCHECK(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT); |
| 210 Assembler::set_target_address_at(pc_, host_, | 211 Assembler::set_target_address_at(isolate_, pc_, host_, |
| 211 reinterpret_cast<Address>(target), | 212 reinterpret_cast<Address>(target), |
| 212 icache_flush_mode); | 213 icache_flush_mode); |
| 213 if (write_barrier_mode == UPDATE_WRITE_BARRIER && | 214 if (write_barrier_mode == UPDATE_WRITE_BARRIER && |
| 214 host() != NULL && | 215 host() != NULL && |
| 215 target->IsHeapObject()) { | 216 target->IsHeapObject()) { |
| 216 host()->GetHeap()->incremental_marking()->RecordWrite( | 217 host()->GetHeap()->incremental_marking()->RecordWrite( |
| 217 host(), &Memory::Object_at(pc_), HeapObject::cast(target)); | 218 host(), &Memory::Object_at(pc_), HeapObject::cast(target)); |
| 218 } | 219 } |
| 219 } | 220 } |
| 220 | 221 |
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| 303 Code* RelocInfo::code_age_stub() { | 304 Code* RelocInfo::code_age_stub() { |
| 304 DCHECK(rmode_ == RelocInfo::CODE_AGE_SEQUENCE); | 305 DCHECK(rmode_ == RelocInfo::CODE_AGE_SEQUENCE); |
| 305 return Code::GetCodeFromTargetAddress( | 306 return Code::GetCodeFromTargetAddress( |
| 306 Assembler::target_address_at(pc_ + Assembler::kInstrSize, host_)); | 307 Assembler::target_address_at(pc_ + Assembler::kInstrSize, host_)); |
| 307 } | 308 } |
| 308 | 309 |
| 309 | 310 |
| 310 void RelocInfo::set_code_age_stub(Code* stub, | 311 void RelocInfo::set_code_age_stub(Code* stub, |
| 311 ICacheFlushMode icache_flush_mode) { | 312 ICacheFlushMode icache_flush_mode) { |
| 312 DCHECK(rmode_ == RelocInfo::CODE_AGE_SEQUENCE); | 313 DCHECK(rmode_ == RelocInfo::CODE_AGE_SEQUENCE); |
| 313 Assembler::set_target_address_at(pc_ + Assembler::kInstrSize, | 314 Assembler::set_target_address_at(isolate_, pc_ + Assembler::kInstrSize, host_, |
| 314 host_, | |
| 315 stub->instruction_start()); | 315 stub->instruction_start()); |
| 316 } | 316 } |
| 317 | 317 |
| 318 | 318 |
| 319 Address RelocInfo::debug_call_address() { | 319 Address RelocInfo::debug_call_address() { |
| 320 // The pc_ offset of 0 assumes patched debug break slot or return | 320 // The pc_ offset of 0 assumes patched debug break slot or return |
| 321 // sequence. | 321 // sequence. |
| 322 DCHECK(IsDebugBreakSlot(rmode()) && IsPatchedDebugBreakSlotSequence()); | 322 DCHECK(IsDebugBreakSlot(rmode()) && IsPatchedDebugBreakSlotSequence()); |
| 323 return Assembler::target_address_at(pc_, host_); | 323 return Assembler::target_address_at(pc_, host_); |
| 324 } | 324 } |
| 325 | 325 |
| 326 | 326 |
| 327 void RelocInfo::set_debug_call_address(Address target) { | 327 void RelocInfo::set_debug_call_address(Address target) { |
| 328 DCHECK(IsDebugBreakSlot(rmode()) && IsPatchedDebugBreakSlotSequence()); | 328 DCHECK(IsDebugBreakSlot(rmode()) && IsPatchedDebugBreakSlotSequence()); |
| 329 // The pc_ offset of 0 assumes patched debug break slot or return | 329 // The pc_ offset of 0 assumes patched debug break slot or return |
| 330 // sequence. | 330 // sequence. |
| 331 Assembler::set_target_address_at(pc_, host_, target); | 331 Assembler::set_target_address_at(isolate_, pc_, host_, target); |
| 332 if (host() != NULL) { | 332 if (host() != NULL) { |
| 333 Object* target_code = Code::GetCodeFromTargetAddress(target); | 333 Object* target_code = Code::GetCodeFromTargetAddress(target); |
| 334 host()->GetHeap()->incremental_marking()->RecordWriteIntoCode( | 334 host()->GetHeap()->incremental_marking()->RecordWriteIntoCode( |
| 335 host(), this, HeapObject::cast(target_code)); | 335 host(), this, HeapObject::cast(target_code)); |
| 336 } | 336 } |
| 337 } | 337 } |
| 338 | 338 |
| 339 | 339 |
| 340 void RelocInfo::WipeOut() { | 340 void RelocInfo::WipeOut() { |
| 341 DCHECK(IsEmbeddedObject(rmode_) || IsCodeTarget(rmode_) || | 341 DCHECK(IsEmbeddedObject(rmode_) || IsCodeTarget(rmode_) || |
| 342 IsRuntimeEntry(rmode_) || IsExternalReference(rmode_) || | 342 IsRuntimeEntry(rmode_) || IsExternalReference(rmode_) || |
| 343 IsInternalReference(rmode_) || IsInternalReferenceEncoded(rmode_)); | 343 IsInternalReference(rmode_) || IsInternalReferenceEncoded(rmode_)); |
| 344 if (IsInternalReference(rmode_)) { | 344 if (IsInternalReference(rmode_)) { |
| 345 Memory::Address_at(pc_) = NULL; | 345 Memory::Address_at(pc_) = NULL; |
| 346 } else if (IsInternalReferenceEncoded(rmode_)) { | 346 } else if (IsInternalReferenceEncoded(rmode_)) { |
| 347 Assembler::set_target_internal_reference_encoded_at(pc_, nullptr); | 347 Assembler::set_target_internal_reference_encoded_at(pc_, nullptr); |
| 348 } else { | 348 } else { |
| 349 Assembler::set_target_address_at(pc_, host_, NULL); | 349 Assembler::set_target_address_at(isolate_, pc_, host_, NULL); |
| 350 } | 350 } |
| 351 } | 351 } |
| 352 | 352 |
| 353 | 353 |
| 354 bool RelocInfo::IsPatchedReturnSequence() { | 354 bool RelocInfo::IsPatchedReturnSequence() { |
| 355 Instr instr0 = Assembler::instr_at(pc_); | 355 Instr instr0 = Assembler::instr_at(pc_); |
| 356 Instr instr1 = Assembler::instr_at(pc_ + 1 * Assembler::kInstrSize); | 356 Instr instr1 = Assembler::instr_at(pc_ + 1 * Assembler::kInstrSize); |
| 357 Instr instr2 = Assembler::instr_at(pc_ + 2 * Assembler::kInstrSize); | 357 Instr instr2 = Assembler::instr_at(pc_ + 2 * Assembler::kInstrSize); |
| 358 bool patched_return = ((instr0 & kOpcodeMask) == LUI && | 358 bool patched_return = ((instr0 & kOpcodeMask) == LUI && |
| 359 (instr1 & kOpcodeMask) == ORI && | 359 (instr1 & kOpcodeMask) == ORI && |
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| 456 EmittedCompactBranchInstruction(); | 456 EmittedCompactBranchInstruction(); |
| 457 } | 457 } |
| 458 CheckTrampolinePoolQuick(); | 458 CheckTrampolinePoolQuick(); |
| 459 } | 459 } |
| 460 | 460 |
| 461 | 461 |
| 462 } // namespace internal | 462 } // namespace internal |
| 463 } // namespace v8 | 463 } // namespace v8 |
| 464 | 464 |
| 465 #endif // V8_MIPS_ASSEMBLER_MIPS_INL_H_ | 465 #endif // V8_MIPS_ASSEMBLER_MIPS_INL_H_ |
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