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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/deopt_instructions.h" | 5 #include "vm/deopt_instructions.h" |
6 | 6 |
7 #include "vm/assembler.h" | 7 #include "vm/assembler.h" |
8 #include "vm/code_patcher.h" | 8 #include "vm/code_patcher.h" |
9 #include "vm/compiler.h" | 9 #include "vm/compiler.h" |
10 #include "vm/intermediate_language.h" | 10 #include "vm/intermediate_language.h" |
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653 | 653 |
654 virtual const char* ArgumentsToCString() const { | 654 virtual const char* ArgumentsToCString() const { |
655 return Thread::Current()->zone()->PrintToString( | 655 return Thread::Current()->zone()->PrintToString( |
656 "%" Pd "", object_table_index_); | 656 "%" Pd "", object_table_index_); |
657 } | 657 } |
658 | 658 |
659 void Execute(DeoptContext* deopt_context, intptr_t* dest_addr) { | 659 void Execute(DeoptContext* deopt_context, intptr_t* dest_addr) { |
660 Function& function = Function::Handle(deopt_context->zone()); | 660 Function& function = Function::Handle(deopt_context->zone()); |
661 function ^= deopt_context->ObjectAt(object_table_index_); | 661 function ^= deopt_context->ObjectAt(object_table_index_); |
662 if (function.IsNull()) { | 662 if (function.IsNull()) { |
| 663 // There are no deoptimization stubs on DBC. |
| 664 #if !defined(TARGET_ARCH_DBC) |
663 *reinterpret_cast<RawObject**>(dest_addr) = deopt_context->is_lazy_deopt() | 665 *reinterpret_cast<RawObject**>(dest_addr) = deopt_context->is_lazy_deopt() |
664 ? StubCode::DeoptimizeLazy_entry()->code() | 666 ? StubCode::DeoptimizeLazy_entry()->code() |
665 : StubCode::Deoptimize_entry()->code(); | 667 : StubCode::Deoptimize_entry()->code(); |
| 668 #endif |
666 return; | 669 return; |
667 } | 670 } |
668 | 671 |
| 672 #if !defined(TARGET_ARCH_DBC) |
669 // We don't always have the Code object for the frame's corresponding | 673 // We don't always have the Code object for the frame's corresponding |
670 // unoptimized code as it may have been collected. Use a stub as the pc | 674 // unoptimized code as it may have been collected. Use a stub as the pc |
671 // marker until we can recreate that Code object during deferred | 675 // marker until we can recreate that Code object during deferred |
672 // materialization to maintain the invariant that Dart frames always have | 676 // materialization to maintain the invariant that Dart frames always have |
673 // a pc marker. | 677 // a pc marker. |
674 *reinterpret_cast<RawObject**>(dest_addr) = | 678 *reinterpret_cast<RawObject**>(dest_addr) = |
675 StubCode::FrameAwaitingMaterialization_entry()->code(); | 679 StubCode::FrameAwaitingMaterialization_entry()->code(); |
| 680 #endif |
676 deopt_context->DeferPcMarkerMaterialization(object_table_index_, dest_addr); | 681 deopt_context->DeferPcMarkerMaterialization(object_table_index_, dest_addr); |
677 } | 682 } |
678 | 683 |
679 private: | 684 private: |
680 intptr_t object_table_index_; | 685 intptr_t object_table_index_; |
681 | 686 |
682 DISALLOW_COPY_AND_ASSIGN(DeoptPcMarkerInstr); | 687 DISALLOW_COPY_AND_ASSIGN(DeoptPcMarkerInstr); |
683 }; | 688 }; |
684 | 689 |
685 | 690 |
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1314 Smi* offset, | 1319 Smi* offset, |
1315 TypedData* info, | 1320 TypedData* info, |
1316 Smi* reason) { | 1321 Smi* reason) { |
1317 intptr_t i = index * kEntrySize; | 1322 intptr_t i = index * kEntrySize; |
1318 *offset ^= table.At(i); | 1323 *offset ^= table.At(i); |
1319 *info ^= table.At(i + 1); | 1324 *info ^= table.At(i + 1); |
1320 *reason ^= table.At(i + 2); | 1325 *reason ^= table.At(i + 2); |
1321 } | 1326 } |
1322 | 1327 |
1323 } // namespace dart | 1328 } // namespace dart |
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