| 1 | // Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file |
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| 2 | // for details. All rights reserved. Use of this source code is governed by a |
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| 3 | // BSD-style license that can be found in the LICENSE file. |
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| 4 | |
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| 5 | #ifndef RUNTIME_VM_REVERSE_PC_LOOKUP_CACHE_H_ |
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| 6 | #define RUNTIME_VM_REVERSE_PC_LOOKUP_CACHE_H_ |
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| 7 | |
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| 8 | #include "vm/allocation.h" |
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| 9 | #include "vm/globals.h" |
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| 10 | #include "vm/raw_object.h" |
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| 11 | #include "vm/tagged_pointer.h" |
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| 12 | |
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| 13 | namespace dart { |
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| 14 | |
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| 15 | class IsolateGroup; |
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| 16 | |
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| 17 | // This class provides mechanism to find Code and CompressedStackMaps |
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| 18 | // objects corresponding to the given PC. |
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| 19 | // Can only be used in AOT runtime with bare instructions. |
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| 20 | class ReversePc : public AllStatic { |
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| 21 | public: |
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| 22 | // Looks for Code object corresponding to |pc| in the |
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| 23 | // given isolate |group| and vm isolate group. |
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| 24 | static CodePtr Lookup(IsolateGroup* group, uword pc, bool is_return_address); |
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| 25 | |
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| 26 | static const UntaggedCompressedStackMaps::Payload* FindStackMap( |
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| 27 | IsolateGroup* group, |
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| 28 | uword pc, |
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| 29 | bool is_return_address, |
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| 30 | uword* code_start, |
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| 31 | const UntaggedCompressedStackMaps::Payload** global_table); |
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| 32 | |
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| 33 | private: |
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| 34 | static const UntaggedCompressedStackMaps::Payload* FindStackMapInGroup( |
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| 35 | IsolateGroup* group, |
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| 36 | uword pc, |
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| 37 | bool is_return_address, |
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| 38 | uword* code_start, |
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| 39 | const UntaggedCompressedStackMaps::Payload** global_table); |
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| 40 | |
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| 41 | static CodePtr FindCodeInGroup(IsolateGroup* group, |
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| 42 | uword pc, |
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| 43 | bool is_return_address); |
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| 44 | static CodePtr FindCode(IsolateGroup* group, |
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| 45 | uword pc, |
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| 46 | bool is_return_address); |
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| 47 | }; |
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| 48 | |
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| 49 | } // namespace dart |
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| 50 | |
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| 51 | #endif // RUNTIME_VM_REVERSE_PC_LOOKUP_CACHE_H_ |
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| 52 | |
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