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 #include "llvm/ExecutionEngine/Orc/Shared/ExecutorAddress.h" 18 19 namespace llvm { 20 namespace orc { 21 22 class ExecutionSession; 23 24 /// Register/Deregisters EH frames in a remote process via a 25 /// ExecutorProcessControl instance. 26 class EPCEHFrameRegistrar : public jitlink::EHFrameRegistrar { 27 public: 28 /// Create from a ExecutorProcessControl instance alone. This will use 29 /// the EPC's lookupSymbols method to find the registration/deregistration 30 /// funciton addresses by name. 31 static Expected<std::unique_ptr<EPCEHFrameRegistrar>> 32 Create(ExecutionSession &ES); 33 34 /// Create a EPCEHFrameRegistrar with the given ExecutorProcessControl 35 /// object and registration/deregistration function addresses. 36 EPCEHFrameRegistrar(ExecutionSession &ES, 37 ExecutorAddr RegisterEHFrameWrapperFnAddr, 38 ExecutorAddr DeregisterEHFRameWrapperFnAddr) 39 : ES(ES), RegisterEHFrameWrapperFnAddr(RegisterEHFrameWrapperFnAddr), 40 DeregisterEHFrameWrapperFnAddr(DeregisterEHFRameWrapperFnAddr) {} 41 42 Error registerEHFrames(ExecutorAddrRange EHFrameSection) override; 43 Error deregisterEHFrames(ExecutorAddrRange EHFrameSection) override; 44 45 private: 46 ExecutionSession &ES; 47 ExecutorAddr RegisterEHFrameWrapperFnAddr; 48 ExecutorAddr DeregisterEHFrameWrapperFnAddr; 49 }; 50 51 } // end namespace orc 52 } // end namespace llvm 53 54 #endif // LLVM_EXECUTIONENGINE_ORC_EPCEHFRAMEREGISTRAR_H 55