| 1 | //===-- EPCEHFrameRegistrar.h - EPC based eh-frame registration -*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // ExecutorProcessControl based eh-frame registration. |
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| 10 | // |
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| 11 | //===----------------------------------------------------------------------===// |
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| 12 | |
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| 13 | #ifndef LLVM_EXECUTIONENGINE_ORC_EPCEHFRAMEREGISTRAR_H |
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| 14 | #define LLVM_EXECUTIONENGINE_ORC_EPCEHFRAMEREGISTRAR_H |
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| 15 | |
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| 16 | #include "llvm/ExecutionEngine/JITLink/EHFrameSupport.h" |
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| 17 | #include "llvm/ExecutionEngine/Orc/Shared/ExecutorAddress.h" |
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| 18 | |
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| 19 | namespace llvm { |
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| 20 | namespace orc { |
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| 21 | |
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| 22 | class ExecutionSession; |
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| 23 | |
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| 24 | /// Register/Deregisters EH frames in a remote process via a |
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| 25 | /// ExecutorProcessControl instance. |
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| 26 | class EPCEHFrameRegistrar : public jitlink::EHFrameRegistrar { |
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| 27 | public: |
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| 28 | /// Create from a ExecutorProcessControl instance alone. This will use |
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| 29 | /// the EPC's lookupSymbols method to find the registration/deregistration |
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| 30 | /// function addresses by name. |
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| 31 | /// |
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| 32 | /// If RegistrationFunctionsDylib is non-None then it will be searched to |
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| 33 | /// find the registration functions. If it is None then the process dylib |
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| 34 | /// will be loaded to find the registration functions. |
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| 35 | static Expected<std::unique_ptr<EPCEHFrameRegistrar>> |
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| 36 | Create(ExecutionSession &ES); |
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| 37 | |
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| 38 | /// Create a EPCEHFrameRegistrar with the given ExecutorProcessControl |
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| 39 | /// object and registration/deregistration function addresses. |
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| 40 | EPCEHFrameRegistrar(ExecutionSession &ES, |
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| 41 | ExecutorAddr RegisterEHFrameSectionWrapper, |
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| 42 | ExecutorAddr DeregisterEHFRameSectionWrapper) |
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| 43 | : ES(ES), RegisterEHFrameSectionWrapper(RegisterEHFrameSectionWrapper), |
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| 44 | DeregisterEHFrameSectionWrapper(DeregisterEHFRameSectionWrapper) {} |
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| 45 | |
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| 46 | Error registerEHFrames(ExecutorAddrRange EHFrameSection) override; |
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| 47 | Error deregisterEHFrames(ExecutorAddrRange EHFrameSection) override; |
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| 48 | |
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| 49 | private: |
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| 50 | ExecutionSession &ES; |
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| 51 | ExecutorAddr RegisterEHFrameSectionWrapper; |
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| 52 | ExecutorAddr DeregisterEHFrameSectionWrapper; |
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| 53 | }; |
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| 54 | |
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| 55 | } // end namespace orc |
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| 56 | } // end namespace llvm |
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| 57 | |
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| 58 | #endif // LLVM_EXECUTIONENGINE_ORC_EPCEHFRAMEREGISTRAR_H |
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| 59 | |
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