1234285Sdim//===-- RuntimeDyldMachO.h - Run-time dynamic linker for MC-JIT ---*- C++ -*-=// 2234285Sdim// 3234285Sdim// The LLVM Compiler Infrastructure 4234285Sdim// 5234285Sdim// This file is distributed under the University of Illinois Open Source 6234285Sdim// License. See LICENSE.TXT for details. 7234285Sdim// 8234285Sdim//===----------------------------------------------------------------------===// 9234285Sdim// 10234285Sdim// MachO support for MC-JIT runtime dynamic linker. 11234285Sdim// 12234285Sdim//===----------------------------------------------------------------------===// 13234285Sdim 14234285Sdim#ifndef LLVM_RUNTIME_DYLD_MACHO_H 15234285Sdim#define LLVM_RUNTIME_DYLD_MACHO_H 16234285Sdim 17252723Sdim#include "RuntimeDyldImpl.h" 18234285Sdim#include "llvm/ADT/IndexedMap.h" 19252723Sdim#include "llvm/Object/MachO.h" 20234285Sdim#include "llvm/Support/Format.h" 21234285Sdim 22234285Sdimusing namespace llvm; 23234285Sdimusing namespace llvm::object; 24234285Sdim 25234285Sdim 26234285Sdimnamespace llvm { 27234285Sdimclass RuntimeDyldMachO : public RuntimeDyldImpl { 28234285Sdim bool resolveI386Relocation(uint8_t *LocalAddress, 29234285Sdim uint64_t FinalAddress, 30234285Sdim uint64_t Value, 31234285Sdim bool isPCRel, 32234285Sdim unsigned Type, 33234285Sdim unsigned Size, 34234285Sdim int64_t Addend); 35234285Sdim bool resolveX86_64Relocation(uint8_t *LocalAddress, 36234285Sdim uint64_t FinalAddress, 37234285Sdim uint64_t Value, 38234285Sdim bool isPCRel, 39234285Sdim unsigned Type, 40234285Sdim unsigned Size, 41234285Sdim int64_t Addend); 42234285Sdim bool resolveARMRelocation(uint8_t *LocalAddress, 43234285Sdim uint64_t FinalAddress, 44234285Sdim uint64_t Value, 45234285Sdim bool isPCRel, 46234285Sdim unsigned Type, 47234285Sdim unsigned Size, 48234285Sdim int64_t Addend); 49234285Sdim 50252723Sdim void resolveRelocation(const SectionEntry &Section, 51252723Sdim uint64_t Offset, 52252723Sdim uint64_t Value, 53252723Sdim uint32_t Type, 54252723Sdim int64_t Addend, 55252723Sdim bool isPCRel, 56252723Sdim unsigned Size); 57263509Sdim 58263509Sdim unsigned getMaxStubSize() { 59263509Sdim if (Arch == Triple::arm || Arch == Triple::thumb) 60263509Sdim return 8; // 32-bit instruction and 32-bit address 61263509Sdim else if (Arch == Triple::x86_64) 62263509Sdim return 8; // GOT entry 63263509Sdim else 64263509Sdim return 0; 65263509Sdim } 66263509Sdim 67263509Sdim unsigned getStubAlignment() { 68263509Sdim return 1; 69263509Sdim } 70263509Sdim 71263509Sdim struct EHFrameRelatedSections { 72263509Sdim EHFrameRelatedSections() : EHFrameSID(RTDYLD_INVALID_SECTION_ID), 73263509Sdim TextSID(RTDYLD_INVALID_SECTION_ID), 74263509Sdim ExceptTabSID(RTDYLD_INVALID_SECTION_ID) {} 75263509Sdim EHFrameRelatedSections(SID EH, SID T, SID Ex) 76263509Sdim : EHFrameSID(EH), TextSID(T), ExceptTabSID(Ex) {} 77263509Sdim SID EHFrameSID; 78263509Sdim SID TextSID; 79263509Sdim SID ExceptTabSID; 80263509Sdim }; 81263509Sdim 82263509Sdim // When a module is loaded we save the SectionID of the EH frame section 83263509Sdim // in a table until we receive a request to register all unregistered 84263509Sdim // EH frame sections with the memory manager. 85263509Sdim SmallVector<EHFrameRelatedSections, 2> UnregisteredEHFrameSections; 86252723Sdimpublic: 87252723Sdim RuntimeDyldMachO(RTDyldMemoryManager *mm) : RuntimeDyldImpl(mm) {} 88252723Sdim 89252723Sdim virtual void resolveRelocation(const RelocationEntry &RE, uint64_t Value); 90252723Sdim virtual void processRelocationRef(unsigned SectionID, 91252723Sdim RelocationRef RelI, 92235633Sdim ObjectImage &Obj, 93234285Sdim ObjSectionToIDMap &ObjSectionToID, 94245431Sdim const SymbolTableMap &Symbols, 95245431Sdim StubMap &Stubs); 96252723Sdim virtual bool isCompatibleFormat(const ObjectBuffer *Buffer) const; 97263509Sdim virtual void registerEHFrames(); 98263509Sdim virtual void finalizeLoad(ObjSectionToIDMap &SectionMap); 99234285Sdim}; 100234285Sdim 101234285Sdim} // end namespace llvm 102234285Sdim 103234285Sdim#endif 104