1 //===-- EPCEHFrameRegistrar.h - EPC based eh-frame registration -*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // ExecutorProcessControl based eh-frame registration. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_EXECUTIONENGINE_ORC_EPCEHFRAMEREGISTRAR_H 14 #define LLVM_EXECUTIONENGINE_ORC_EPCEHFRAMEREGISTRAR_H 15 16 #include "llvm/ExecutionEngine/JITLink/EHFrameSupport.h" 17 18 namespace llvm { 19 namespace orc { 20 21 class ExecutionSession; 22 23 /// Register/Deregisters EH frames in a remote process via a 24 /// ExecutorProcessControl instance. 25 class EPCEHFrameRegistrar : public jitlink::EHFrameRegistrar { 26 public: 27 /// Create from a ExecutorProcessControl instance alone. This will use 28 /// the EPC's lookupSymbols method to find the registration/deregistration 29 /// funciton addresses by name. 30 static Expected<std::unique_ptr<EPCEHFrameRegistrar>> 31 Create(ExecutionSession &ES); 32 33 /// Create a EPCEHFrameRegistrar with the given ExecutorProcessControl 34 /// object and registration/deregistration function addresses. EPCEHFrameRegistrar(ExecutionSession & ES,JITTargetAddress RegisterEHFrameWrapperFnAddr,JITTargetAddress DeregisterEHFRameWrapperFnAddr)35 EPCEHFrameRegistrar(ExecutionSession &ES, 36 JITTargetAddress RegisterEHFrameWrapperFnAddr, 37 JITTargetAddress DeregisterEHFRameWrapperFnAddr) 38 : ES(ES), RegisterEHFrameWrapperFnAddr(RegisterEHFrameWrapperFnAddr), 39 DeregisterEHFrameWrapperFnAddr(DeregisterEHFRameWrapperFnAddr) {} 40 41 Error registerEHFrames(JITTargetAddress EHFrameSectionAddr, 42 size_t EHFrameSectionSize) override; 43 Error deregisterEHFrames(JITTargetAddress EHFrameSectionAddr, 44 size_t EHFrameSectionSize) override; 45 46 private: 47 ExecutionSession &ES; 48 JITTargetAddress RegisterEHFrameWrapperFnAddr; 49 JITTargetAddress DeregisterEHFrameWrapperFnAddr; 50 }; 51 52 } // end namespace orc 53 } // end namespace llvm 54 55 #endif // LLVM_EXECUTIONENGINE_ORC_EPCEHFRAMEREGISTRAR_H 56