| //===-- RuntimeDyldMachO.h - Run-time dynamic linker for MC-JIT ---*- C++ -*-=// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // MachO support for MC-JIT runtime dynamic linker. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_RUNTIME_DYLD_MACHO_H |
| #define LLVM_RUNTIME_DYLD_MACHO_H |
| |
| #include "ObjectImageCommon.h" |
| #include "RuntimeDyldImpl.h" |
| #include "llvm/ADT/IndexedMap.h" |
| #include "llvm/Object/MachO.h" |
| #include "llvm/Support/Format.h" |
| |
| using namespace llvm; |
| using namespace llvm::object; |
| |
| namespace llvm { |
| class RuntimeDyldMachO : public RuntimeDyldImpl { |
| bool resolveI386Relocation(uint8_t *LocalAddress, uint64_t FinalAddress, |
| uint64_t Value, bool isPCRel, unsigned Type, |
| unsigned Size, int64_t Addend); |
| bool resolveX86_64Relocation(uint8_t *LocalAddress, uint64_t FinalAddress, |
| uint64_t Value, bool isPCRel, unsigned Type, |
| unsigned Size, int64_t Addend); |
| bool resolveARMRelocation(uint8_t *LocalAddress, uint64_t FinalAddress, |
| uint64_t Value, bool isPCRel, unsigned Type, |
| unsigned Size, int64_t Addend); |
| bool resolveARM64Relocation(uint8_t *LocalAddress, uint64_t FinalAddress, |
| uint64_t Value, bool IsPCRel, unsigned Type, |
| unsigned Size, int64_t Addend); |
| |
| void resolveRelocation(const SectionEntry &Section, uint64_t Offset, |
| uint64_t Value, uint32_t Type, int64_t Addend, |
| bool isPCRel, unsigned Size); |
| |
| unsigned getMaxStubSize() override { |
| if (Arch == Triple::arm || Arch == Triple::thumb) |
| return 8; // 32-bit instruction and 32-bit address |
| else if (Arch == Triple::x86_64) |
| return 8; // GOT entry |
| else |
| return 0; |
| } |
| |
| unsigned getStubAlignment() override { return 1; } |
| |
| struct EHFrameRelatedSections { |
| EHFrameRelatedSections() |
| : EHFrameSID(RTDYLD_INVALID_SECTION_ID), |
| TextSID(RTDYLD_INVALID_SECTION_ID), |
| ExceptTabSID(RTDYLD_INVALID_SECTION_ID) {} |
| EHFrameRelatedSections(SID EH, SID T, SID Ex) |
| : EHFrameSID(EH), TextSID(T), ExceptTabSID(Ex) {} |
| SID EHFrameSID; |
| SID TextSID; |
| SID ExceptTabSID; |
| }; |
| |
| // When a module is loaded we save the SectionID of the EH frame section |
| // in a table until we receive a request to register all unregistered |
| // EH frame sections with the memory manager. |
| SmallVector<EHFrameRelatedSections, 2> UnregisteredEHFrameSections; |
| |
| public: |
| RuntimeDyldMachO(RTDyldMemoryManager *mm) : RuntimeDyldImpl(mm) {} |
| |
| void resolveRelocation(const RelocationEntry &RE, uint64_t Value) override; |
| relocation_iterator |
| processRelocationRef(unsigned SectionID, relocation_iterator RelI, |
| ObjectImage &Obj, ObjSectionToIDMap &ObjSectionToID, |
| const SymbolTableMap &Symbols, StubMap &Stubs) override; |
| bool isCompatibleFormat(const ObjectBuffer *Buffer) const override; |
| bool isCompatibleFile(const object::ObjectFile *Obj) const override; |
| void registerEHFrames() override; |
| void finalizeLoad(ObjSectionToIDMap &SectionMap) override; |
| |
| static ObjectImage *createObjectImage(ObjectBuffer *InputBuffer) { |
| return new ObjectImageCommon(InputBuffer); |
| } |
| |
| static ObjectImage * |
| createObjectImageFromFile(std::unique_ptr<object::ObjectFile> InputObject) { |
| return new ObjectImageCommon(std::move(InputObject)); |
| } |
| }; |
| |
| } // end namespace llvm |
| |
| #endif |