1 //===-- TPCEHFrameRegistrar.h - TPC 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 // TargetProcessControl based eh-frame registration. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_EXECUTIONENGINE_ORC_TPCEHFRAMEREGISTRAR_H 14 #define LLVM_EXECUTIONENGINE_ORC_TPCEHFRAMEREGISTRAR_H 15 16 #include "llvm/ExecutionEngine/JITLink/EHFrameSupport.h" 17 #include "llvm/ExecutionEngine/Orc/TargetProcessControl.h" 18 19 namespace llvm { 20 namespace orc { 21 22 /// Register/Deregisters EH frames in a remote process via a 23 /// TargetProcessControl instance. 24 class TPCEHFrameRegistrar : public jitlink::EHFrameRegistrar { 25 public: 26 /// Create from a TargetProcessControl instance alone. This will use 27 /// the TPC's lookupSymbols method to find the registration/deregistration 28 /// funciton addresses by name. 29 static Expected<std::unique_ptr<TPCEHFrameRegistrar>> 30 Create(TargetProcessControl &TPC); 31 32 /// Create a TPCEHFrameRegistrar with the given TargetProcessControl 33 /// object and registration/deregistration function addresses. TPCEHFrameRegistrar(TargetProcessControl & TPC,JITTargetAddress RegisterEHFrameWrapperFnAddr,JITTargetAddress DeregisterEHFRameWrapperFnAddr)34 TPCEHFrameRegistrar(TargetProcessControl &TPC, 35 JITTargetAddress RegisterEHFrameWrapperFnAddr, 36 JITTargetAddress DeregisterEHFRameWrapperFnAddr) 37 : TPC(TPC), RegisterEHFrameWrapperFnAddr(RegisterEHFrameWrapperFnAddr), 38 DeregisterEHFrameWrapperFnAddr(DeregisterEHFRameWrapperFnAddr) {} 39 40 Error registerEHFrames(JITTargetAddress EHFrameSectionAddr, 41 size_t EHFrameSectionSize) override; 42 Error deregisterEHFrames(JITTargetAddress EHFrameSectionAddr, 43 size_t EHFrameSectionSize) override; 44 45 private: 46 TargetProcessControl &TPC; 47 JITTargetAddress RegisterEHFrameWrapperFnAddr; 48 JITTargetAddress DeregisterEHFrameWrapperFnAddr; 49 }; 50 51 } // end namespace orc 52 } // end namespace llvm 53 54 #endif // LLVM_EXECUTIONENGINE_ORC_TPCEHFRAMEREGISTRAR_H 55