1 //===------ EPCEHFrameRegistrar.cpp - EPC-based eh-frame registration -----===// 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 #include "llvm/ExecutionEngine/Orc/EPCEHFrameRegistrar.h" 10 11 #include "llvm/ExecutionEngine/Orc/Core.h" 12 #include "llvm/ExecutionEngine/Orc/Shared/OrcRTBridge.h" 13 14 using namespace llvm::orc::shared; 15 16 namespace llvm { 17 namespace orc { 18 19 Expected<std::unique_ptr<EPCEHFrameRegistrar>> 20 EPCEHFrameRegistrar::Create(ExecutionSession &ES) { 21 22 // Lookup addresseses of the registration/deregistration functions in the 23 // bootstrap map. 24 ExecutorAddr RegisterEHFrameSectionWrapper; 25 ExecutorAddr DeregisterEHFrameSectionWrapper; 26 if (auto Err = ES.getExecutorProcessControl().getBootstrapSymbols( 27 {{RegisterEHFrameSectionWrapper, 28 rt::RegisterEHFrameSectionWrapperName}, 29 {DeregisterEHFrameSectionWrapper, 30 rt::DeregisterEHFrameSectionWrapperName}})) 31 return std::move(Err); 32 33 return std::make_unique<EPCEHFrameRegistrar>( 34 ES, RegisterEHFrameSectionWrapper, DeregisterEHFrameSectionWrapper); 35 } 36 37 Error EPCEHFrameRegistrar::registerEHFrames(ExecutorAddrRange EHFrameSection) { 38 return ES.callSPSWrapper<void(SPSExecutorAddrRange)>( 39 RegisterEHFrameSectionWrapper, EHFrameSection); 40 } 41 42 Error EPCEHFrameRegistrar::deregisterEHFrames( 43 ExecutorAddrRange EHFrameSection) { 44 return ES.callSPSWrapper<void(SPSExecutorAddrRange)>( 45 DeregisterEHFrameSectionWrapper, EHFrameSection); 46 } 47 48 } // end namespace orc 49 } // end namespace llvm 50