113 lines
4.0 KiB
C++
113 lines
4.0 KiB
C++
//===-- RuntimeDyldMachO.h - Run-time dynamic linker for MC-JIT ---*- C++ -*-=//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// MachO support for MC-JIT runtime dynamic linker.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_RUNTIME_DYLD_MACHO_H
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#define LLVM_RUNTIME_DYLD_MACHO_H
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#include "ObjectImageCommon.h"
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#include "RuntimeDyldImpl.h"
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#include "llvm/ADT/IndexedMap.h"
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#include "llvm/Object/MachO.h"
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#include "llvm/Support/Format.h"
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using namespace llvm;
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using namespace llvm::object;
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namespace llvm {
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class RuntimeDyldMachO : public RuntimeDyldImpl {
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bool resolveI386Relocation(uint8_t *LocalAddress,
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uint64_t FinalAddress,
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uint64_t Value,
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bool isPCRel,
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unsigned Type,
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unsigned Size,
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int64_t Addend);
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bool resolveX86_64Relocation(uint8_t *LocalAddress,
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uint64_t FinalAddress,
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uint64_t Value,
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bool isPCRel,
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unsigned Type,
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unsigned Size,
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int64_t Addend);
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bool resolveARMRelocation(uint8_t *LocalAddress,
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uint64_t FinalAddress,
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uint64_t Value,
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bool isPCRel,
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unsigned Type,
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unsigned Size,
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int64_t Addend);
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void resolveRelocation(const SectionEntry &Section,
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uint64_t Offset,
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uint64_t Value,
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uint32_t Type,
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int64_t Addend,
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bool isPCRel,
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unsigned Size);
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unsigned getMaxStubSize() override {
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if (Arch == Triple::arm || Arch == Triple::thumb)
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return 8; // 32-bit instruction and 32-bit address
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else if (Arch == Triple::x86_64)
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return 8; // GOT entry
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else
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return 0;
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}
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unsigned getStubAlignment() override {
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return 1;
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}
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struct EHFrameRelatedSections {
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EHFrameRelatedSections() : EHFrameSID(RTDYLD_INVALID_SECTION_ID),
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TextSID(RTDYLD_INVALID_SECTION_ID),
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ExceptTabSID(RTDYLD_INVALID_SECTION_ID) {}
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EHFrameRelatedSections(SID EH, SID T, SID Ex)
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: EHFrameSID(EH), TextSID(T), ExceptTabSID(Ex) {}
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SID EHFrameSID;
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SID TextSID;
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SID ExceptTabSID;
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};
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// When a module is loaded we save the SectionID of the EH frame section
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// in a table until we receive a request to register all unregistered
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// EH frame sections with the memory manager.
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SmallVector<EHFrameRelatedSections, 2> UnregisteredEHFrameSections;
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public:
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RuntimeDyldMachO(RTDyldMemoryManager *mm) : RuntimeDyldImpl(mm) {}
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void resolveRelocation(const RelocationEntry &RE, uint64_t Value) override;
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void processRelocationRef(unsigned SectionID, RelocationRef RelI,
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ObjectImage &Obj, ObjSectionToIDMap &ObjSectionToID,
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const SymbolTableMap &Symbols,
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StubMap &Stubs) override;
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bool isCompatibleFormat(const ObjectBuffer *Buffer) const override;
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bool isCompatibleFile(const object::ObjectFile *Obj) const override;
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void registerEHFrames() override;
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void finalizeLoad(ObjSectionToIDMap &SectionMap) override;
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static ObjectImage *createObjectImage(ObjectBuffer *InputBuffer) {
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return new ObjectImageCommon(InputBuffer);
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}
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static ObjectImage *createObjectImageFromFile(object::ObjectFile *InputObject) {
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return new ObjectImageCommon(InputObject);
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}
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};
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} // end namespace llvm
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#endif
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