63 lines
2.3 KiB
C
63 lines
2.3 KiB
C
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//===--------- EHFrameSupport.h - JITLink eh-frame utils --------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// EHFrame registration support for JITLink.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_EXECUTIONENGINE_JITLINK_EHFRAMESUPPORT_H
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#define LLVM_EXECUTIONENGINE_JITLINK_EHFRAMESUPPORT_H
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#include "llvm/ADT/Triple.h"
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#include "llvm/ExecutionEngine/JITLink/JITLink.h"
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#include "llvm/ExecutionEngine/JITSymbol.h"
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#include "llvm/Support/Error.h"
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namespace llvm {
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namespace jitlink {
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/// Supports registration/deregistration of EH-frames in a target process.
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class EHFrameRegistrar {
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public:
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virtual ~EHFrameRegistrar();
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virtual Error registerEHFrames(JITTargetAddress EHFrameSectionAddr,
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size_t EHFrameSectionSize) = 0;
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virtual Error deregisterEHFrames(JITTargetAddress EHFrameSectionAddr,
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size_t EHFrameSectionSize) = 0;
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};
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/// Registers / Deregisters EH-frames in the current process.
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class InProcessEHFrameRegistrar final : public EHFrameRegistrar {
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public:
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Error registerEHFrames(JITTargetAddress EHFrameSectionAddr,
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size_t EHFrameSectionSize) override;
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Error deregisterEHFrames(JITTargetAddress EHFrameSectionAddr,
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size_t EHFrameSectionSize) override;
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};
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using StoreFrameRangeFunction =
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std::function<void(JITTargetAddress EHFrameSectionAddr,
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size_t EHFrameSectionSize)>;
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/// Creates a pass that records the address and size of the EH frame section.
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/// If no eh-frame section is found then the address and size will both be given
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/// as zero.
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///
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/// Authors of JITLinkContexts can use this function to register a post-fixup
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/// pass that records the range of the eh-frame section. This range can
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/// be used after finalization to register and deregister the frame.
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LinkGraphPassFunction
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createEHFrameRecorderPass(const Triple &TT,
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StoreFrameRangeFunction StoreFrameRange);
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} // end namespace jitlink
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} // end namespace llvm
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#endif // LLVM_EXECUTIONENGINE_JITLINK_EHFRAMESUPPORT_H
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