#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"
using namespace llvm;
using namespace llvm::object;
-
namespace llvm {
class RuntimeDyldMachO : public RuntimeDyldImpl {
-protected:
- 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);
-
- virtual void processRelocationRef(const ObjRelocationInfo &Rel,
- ObjectImage &Obj,
- ObjSectionToIDMap &ObjSectionToID,
- const SymbolTableMap &Symbols,
- StubMap &Stubs);
+private:
-public:
- virtual void resolveRelocation(const SectionEntry &Section,
- uint64_t Offset,
- uint64_t Value,
- uint32_t Type,
- int64_t Addend);
+ /// Write the least significant 'Size' bytes in 'Value' out at the address
+ /// pointed to by Addr.
+ bool applyRelocationValue(uint8_t *Addr, uint64_t Value, unsigned Size) {
+ for (unsigned i = 0; i < Size; ++i) {
+ *Addr++ = (uint8_t)Value;
+ Value >>= 8;
+ }
+
+ return false;
+ }
+
+ bool resolveI386Relocation(const RelocationEntry &RE, uint64_t Value);
+ bool resolveX86_64Relocation(const RelocationEntry &RE, uint64_t Value);
+ bool resolveARMRelocation(const RelocationEntry &RE, uint64_t Value);
+ bool resolveAArch64Relocation(const RelocationEntry &RE, uint64_t Value);
+
+ // Populate stubs in __jump_table section.
+ void populateJumpTable(MachOObjectFile &Obj, const SectionRef &JTSection,
+ unsigned JTSectionID);
+
+ // Populate __pointers section.
+ void populatePointersSection(MachOObjectFile &Obj, const SectionRef &PTSection,
+ unsigned PTSectionID);
+
+ 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; }
+ relocation_iterator processSECTDIFFRelocation(
+ unsigned SectionID,
+ relocation_iterator RelI,
+ ObjectImage &ObjImg,
+ ObjSectionToIDMap &ObjSectionToID);
+
+ relocation_iterator processI386ScatteredVANILLA(
+ unsigned SectionID,
+ relocation_iterator RelI,
+ ObjectImage &ObjImg,
+ ObjSectionToIDMap &ObjSectionToID);
+
+ 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) {}
- bool isCompatibleFormat(const ObjectBuffer *Buffer) const;
+ 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(ObjectImage &ObjImg,
+ 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