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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 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
| (...skipping 187 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 198 void Assembler::emit_optional_rex_32(Register rm_reg) { | 198 void Assembler::emit_optional_rex_32(Register rm_reg) { |
| 199 if (rm_reg.high_bit()) emit(0x41); | 199 if (rm_reg.high_bit()) emit(0x41); |
| 200 } | 200 } |
| 201 | 201 |
| 202 | 202 |
| 203 void Assembler::emit_optional_rex_32(const Operand& op) { | 203 void Assembler::emit_optional_rex_32(const Operand& op) { |
| 204 if (op.rex_ != 0) emit(0x40 | op.rex_); | 204 if (op.rex_ != 0) emit(0x40 | op.rex_); |
| 205 } | 205 } |
| 206 | 206 |
| 207 | 207 |
| 208 Address Assembler::target_address_at(Address pc) { | 208 Address Assembler::target_address_at(Address pc, |
| 209 ConstantPoolArray* constant_pool) { |
| 209 return Memory::int32_at(pc) + pc + 4; | 210 return Memory::int32_at(pc) + pc + 4; |
| 210 } | 211 } |
| 211 | 212 |
| 212 | 213 |
| 213 void Assembler::set_target_address_at(Address pc, Address target) { | 214 void Assembler::set_target_address_at(Address pc, |
| 215 ConstantPoolArray* constant_pool, |
| 216 Address target) { |
| 214 Memory::int32_at(pc) = static_cast<int32_t>(target - pc - 4); | 217 Memory::int32_at(pc) = static_cast<int32_t>(target - pc - 4); |
| 215 CPU::FlushICache(pc, sizeof(int32_t)); | 218 CPU::FlushICache(pc, sizeof(int32_t)); |
| 216 } | 219 } |
| 217 | 220 |
| 218 | 221 |
| 219 Address Assembler::target_address_from_return_address(Address pc) { | 222 Address Assembler::target_address_from_return_address(Address pc) { |
| 220 return pc - kCallTargetAddressOffset; | 223 return pc - kCallTargetAddressOffset; |
| 221 } | 224 } |
| 222 | 225 |
| 223 | 226 |
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| 248 int32_t* p = reinterpret_cast<int32_t*>(pc_ + 1); | 251 int32_t* p = reinterpret_cast<int32_t*>(pc_ + 1); |
| 249 *p -= static_cast<int32_t>(delta); // Relocate entry. | 252 *p -= static_cast<int32_t>(delta); // Relocate entry. |
| 250 CPU::FlushICache(p, sizeof(uint32_t)); | 253 CPU::FlushICache(p, sizeof(uint32_t)); |
| 251 } | 254 } |
| 252 } | 255 } |
| 253 } | 256 } |
| 254 | 257 |
| 255 | 258 |
| 256 Address RelocInfo::target_address() { | 259 Address RelocInfo::target_address() { |
| 257 ASSERT(IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_)); | 260 ASSERT(IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_)); |
| 258 return Assembler::target_address_at(pc_); | 261 return Assembler::target_address_at(pc_, host_); |
| 259 } | 262 } |
| 260 | 263 |
| 261 | 264 |
| 262 Address RelocInfo::target_address_address() { | 265 Address RelocInfo::target_address_address() { |
| 263 ASSERT(IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_) | 266 ASSERT(IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_) |
| 264 || rmode_ == EMBEDDED_OBJECT | 267 || rmode_ == EMBEDDED_OBJECT |
| 265 || rmode_ == EXTERNAL_REFERENCE); | 268 || rmode_ == EXTERNAL_REFERENCE); |
| 266 return reinterpret_cast<Address>(pc_); | 269 return reinterpret_cast<Address>(pc_); |
| 267 } | 270 } |
| 268 | 271 |
| 269 | 272 |
| 270 int RelocInfo::target_address_size() { | 273 int RelocInfo::target_address_size() { |
| 271 if (IsCodedSpecially()) { | 274 if (IsCodedSpecially()) { |
| 272 return Assembler::kSpecialTargetSize; | 275 return Assembler::kSpecialTargetSize; |
| 273 } else { | 276 } else { |
| 274 return kPointerSize; | 277 return kPointerSize; |
| 275 } | 278 } |
| 276 } | 279 } |
| 277 | 280 |
| 278 | 281 |
| 279 void RelocInfo::set_target_address(Address target, WriteBarrierMode mode) { | 282 void RelocInfo::set_target_address(Address target, WriteBarrierMode mode) { |
| 280 ASSERT(IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_)); | 283 ASSERT(IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_)); |
| 281 Assembler::set_target_address_at(pc_, target); | 284 Assembler::set_target_address_at(pc_, host_, target); |
| 282 if (mode == UPDATE_WRITE_BARRIER && host() != NULL && IsCodeTarget(rmode_)) { | 285 if (mode == UPDATE_WRITE_BARRIER && host() != NULL && IsCodeTarget(rmode_)) { |
| 283 Object* target_code = Code::GetCodeFromTargetAddress(target); | 286 Object* target_code = Code::GetCodeFromTargetAddress(target); |
| 284 host()->GetHeap()->incremental_marking()->RecordWriteIntoCode( | 287 host()->GetHeap()->incremental_marking()->RecordWriteIntoCode( |
| 285 host(), this, HeapObject::cast(target_code)); | 288 host(), this, HeapObject::cast(target_code)); |
| 286 } | 289 } |
| 287 } | 290 } |
| 288 | 291 |
| 289 | 292 |
| 290 Object* RelocInfo::target_object() { | 293 Object* RelocInfo::target_object() { |
| 291 ASSERT(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT); | 294 ASSERT(IsCodeTarget(rmode_) || rmode_ == EMBEDDED_OBJECT); |
| (...skipping 70 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 362 host(), NULL, cell); | 365 host(), NULL, cell); |
| 363 } | 366 } |
| 364 } | 367 } |
| 365 | 368 |
| 366 | 369 |
| 367 void RelocInfo::WipeOut() { | 370 void RelocInfo::WipeOut() { |
| 368 if (IsEmbeddedObject(rmode_) || IsExternalReference(rmode_)) { | 371 if (IsEmbeddedObject(rmode_) || IsExternalReference(rmode_)) { |
| 369 Memory::Address_at(pc_) = NULL; | 372 Memory::Address_at(pc_) = NULL; |
| 370 } else if (IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_)) { | 373 } else if (IsCodeTarget(rmode_) || IsRuntimeEntry(rmode_)) { |
| 371 // Effectively write zero into the relocation. | 374 // Effectively write zero into the relocation. |
| 372 Assembler::set_target_address_at(pc_, pc_ + sizeof(int32_t)); | 375 Assembler::set_target_address_at(pc_, host_, pc_ + sizeof(int32_t)); |
| 373 } else { | 376 } else { |
| 374 UNREACHABLE(); | 377 UNREACHABLE(); |
| 375 } | 378 } |
| 376 } | 379 } |
| 377 | 380 |
| 378 | 381 |
| 379 bool RelocInfo::IsPatchedReturnSequence() { | 382 bool RelocInfo::IsPatchedReturnSequence() { |
| 380 // The recognized call sequence is: | 383 // The recognized call sequence is: |
| 381 // movq(kScratchRegister, address); call(kScratchRegister); | 384 // movq(kScratchRegister, address); call(kScratchRegister); |
| 382 // It only needs to be distinguished from a return sequence | 385 // It only needs to be distinguished from a return sequence |
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| 401 ASSERT(rmode_ == RelocInfo::CODE_AGE_SEQUENCE); | 404 ASSERT(rmode_ == RelocInfo::CODE_AGE_SEQUENCE); |
| 402 ASSERT(*pc_ == kCallOpcode); | 405 ASSERT(*pc_ == kCallOpcode); |
| 403 return origin->code_target_object_handle_at(pc_ + 1); | 406 return origin->code_target_object_handle_at(pc_ + 1); |
| 404 } | 407 } |
| 405 | 408 |
| 406 | 409 |
| 407 Code* RelocInfo::code_age_stub() { | 410 Code* RelocInfo::code_age_stub() { |
| 408 ASSERT(rmode_ == RelocInfo::CODE_AGE_SEQUENCE); | 411 ASSERT(rmode_ == RelocInfo::CODE_AGE_SEQUENCE); |
| 409 ASSERT(*pc_ == kCallOpcode); | 412 ASSERT(*pc_ == kCallOpcode); |
| 410 return Code::GetCodeFromTargetAddress( | 413 return Code::GetCodeFromTargetAddress( |
| 411 Assembler::target_address_at(pc_ + 1)); | 414 Assembler::target_address_at(pc_ + 1, host_)); |
| 412 } | 415 } |
| 413 | 416 |
| 414 | 417 |
| 415 void RelocInfo::set_code_age_stub(Code* stub) { | 418 void RelocInfo::set_code_age_stub(Code* stub) { |
| 416 ASSERT(*pc_ == kCallOpcode); | 419 ASSERT(*pc_ == kCallOpcode); |
| 417 ASSERT(rmode_ == RelocInfo::CODE_AGE_SEQUENCE); | 420 ASSERT(rmode_ == RelocInfo::CODE_AGE_SEQUENCE); |
| 418 Assembler::set_target_address_at(pc_ + 1, stub->instruction_start()); | 421 Assembler::set_target_address_at(pc_ + 1, host_, stub->instruction_start()); |
| 419 } | 422 } |
| 420 | 423 |
| 421 | 424 |
| 422 Address RelocInfo::call_address() { | 425 Address RelocInfo::call_address() { |
| 423 ASSERT((IsJSReturn(rmode()) && IsPatchedReturnSequence()) || | 426 ASSERT((IsJSReturn(rmode()) && IsPatchedReturnSequence()) || |
| 424 (IsDebugBreakSlot(rmode()) && IsPatchedDebugBreakSlotSequence())); | 427 (IsDebugBreakSlot(rmode()) && IsPatchedDebugBreakSlotSequence())); |
| 425 return Memory::Address_at( | 428 return Memory::Address_at( |
| 426 pc_ + Assembler::kRealPatchReturnSequenceAddressOffset); | 429 pc_ + Assembler::kRealPatchReturnSequenceAddressOffset); |
| 427 } | 430 } |
| 428 | 431 |
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| 551 ASSERT(len_ == 1 || len_ == 2); | 554 ASSERT(len_ == 1 || len_ == 2); |
| 552 int32_t* p = reinterpret_cast<int32_t*>(&buf_[len_]); | 555 int32_t* p = reinterpret_cast<int32_t*>(&buf_[len_]); |
| 553 *p = disp; | 556 *p = disp; |
| 554 len_ += sizeof(int32_t); | 557 len_ += sizeof(int32_t); |
| 555 } | 558 } |
| 556 | 559 |
| 557 | 560 |
| 558 } } // namespace v8::internal | 561 } } // namespace v8::internal |
| 559 | 562 |
| 560 #endif // V8_X64_ASSEMBLER_X64_INL_H_ | 563 #endif // V8_X64_ASSEMBLER_X64_INL_H_ |
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