llvm/lib/ExecutionEngine/Orc/EPCEHFrameRegistrar.cpp

   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