#include "llvm/ADT/StringRef.h"
#include "llvm/Object/COFF.h"
#include "llvm/Object/ELFObjectFile.h"
+#include "llvm/Object/MachO.h"
#include "llvm/Object/ObjectFile.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ELF.h"
+#include "llvm/Support/MachO.h"
#include "llvm/Support/raw_ostream.h"
namespace llvm {
/// @brief Base class for object file relocation visitors.
class RelocVisitor {
public:
- explicit RelocVisitor(ObjectFile &Obj)
+ explicit RelocVisitor(const ObjectFile &Obj)
: ObjToVisit(Obj), HasError(false) {}
// TODO: Should handle multiple applied relocations via either passing in the
return visitELF(RelocType, R, Value);
if (isa<COFFObjectFile>(ObjToVisit))
return visitCOFF(RelocType, R, Value);
+ if (isa<MachOObjectFile>(ObjToVisit))
+ return visitMachO(RelocType, R, Value);
HasError = true;
return RelocToApply();
bool error() { return HasError; }
private:
- ObjectFile &ObjToVisit;
+ const ObjectFile &ObjToVisit;
bool HasError;
RelocToApply visitELF(uint32_t RelocType, RelocationRef R, uint64_t Value) {
case Triple::mips64:
switch (RelocType) {
case llvm::ELF::R_MIPS_32:
- return visitELF_MIPS_32(R, Value);
+ return visitELF_MIPS64_32(R, Value);
case llvm::ELF::R_MIPS_64:
- return visitELF_MIPS_64(R, Value);
+ return visitELF_MIPS64_64(R, Value);
default:
HasError = true;
return RelocToApply();
return RelocToApply();
}
- int64_t getELFAddend32LE(RelocationRef R) {
- const ELF32LEObjectFile *Obj = cast<ELF32LEObjectFile>(R.getObjectFile());
- DataRefImpl DRI = R.getRawDataRefImpl();
- int64_t Addend;
- Obj->getRelocationAddend(DRI, Addend);
- return Addend;
+ RelocToApply visitMachO(uint32_t RelocType, RelocationRef R, uint64_t Value) {
+ switch (ObjToVisit.getArch()) {
+ default: break;
+ case Triple::x86_64:
+ switch (RelocType) {
+ default: break;
+ case MachO::X86_64_RELOC_UNSIGNED:
+ return visitMACHO_X86_64_UNSIGNED(R, Value);
+ }
+ }
+ HasError = true;
+ return RelocToApply();
}
- int64_t getELFAddend64LE(RelocationRef R) {
- const ELF64LEObjectFile *Obj = cast<ELF64LEObjectFile>(R.getObjectFile());
- DataRefImpl DRI = R.getRawDataRefImpl();
- int64_t Addend;
- Obj->getRelocationAddend(DRI, Addend);
- return Addend;
+ int64_t getELFAddend(RelocationRef R) {
+ ErrorOr<int64_t> AddendOrErr = ELFRelocationRef(R).getAddend();
+ if (std::error_code EC = AddendOrErr.getError())
+ report_fatal_error(EC.message());
+ return *AddendOrErr;
}
- int64_t getELFAddend32BE(RelocationRef R) {
- const ELF32BEObjectFile *Obj = cast<ELF32BEObjectFile>(R.getObjectFile());
- DataRefImpl DRI = R.getRawDataRefImpl();
- int64_t Addend;
- Obj->getRelocationAddend(DRI, Addend);
- return Addend;
+ uint8_t getLengthMachO64(RelocationRef R) {
+ const MachOObjectFile *Obj = cast<MachOObjectFile>(R.getObject());
+ return Obj->getRelocationLength(R.getRawDataRefImpl());
}
- int64_t getELFAddend64BE(RelocationRef R) {
- const ELF64BEObjectFile *Obj = cast<ELF64BEObjectFile>(R.getObjectFile());
- DataRefImpl DRI = R.getRawDataRefImpl();
- int64_t Addend;
- Obj->getRelocationAddend(DRI, Addend);
- return Addend;
- }
/// Operations
/// 386-ELF
// Ideally the Addend here will be the addend in the data for
// the relocation. It's not actually the case for Rel relocations.
RelocToApply visitELF_386_32(RelocationRef R, uint64_t Value) {
- int64_t Addend = getELFAddend32LE(R);
- return RelocToApply(Value + Addend, 4);
+ return RelocToApply(Value, 4);
}
RelocToApply visitELF_386_PC32(RelocationRef R, uint64_t Value) {
- int64_t Addend = getELFAddend32LE(R);
- uint64_t Address;
- R.getOffset(Address);
- return RelocToApply(Value + Addend - Address, 4);
+ uint64_t Address = R.getOffset();
+ return RelocToApply(Value - Address, 4);
}
/// X86-64 ELF
return RelocToApply(0, 0);
}
RelocToApply visitELF_X86_64_64(RelocationRef R, uint64_t Value) {
- int64_t Addend = getELFAddend64LE(R);
+ int64_t Addend = getELFAddend(R);
return RelocToApply(Value + Addend, 8);
}
RelocToApply visitELF_X86_64_PC32(RelocationRef R, uint64_t Value) {
- int64_t Addend = getELFAddend64LE(R);
- uint64_t Address;
- R.getOffset(Address);
+ int64_t Addend = getELFAddend(R);
+ uint64_t Address = R.getOffset();
return RelocToApply(Value + Addend - Address, 4);
}
RelocToApply visitELF_X86_64_32(RelocationRef R, uint64_t Value) {
- int64_t Addend = getELFAddend64LE(R);
+ int64_t Addend = getELFAddend(R);
uint32_t Res = (Value + Addend) & 0xFFFFFFFF;
return RelocToApply(Res, 4);
}
RelocToApply visitELF_X86_64_32S(RelocationRef R, uint64_t Value) {
- int64_t Addend = getELFAddend64LE(R);
+ int64_t Addend = getELFAddend(R);
int32_t Res = (Value + Addend) & 0xFFFFFFFF;
return RelocToApply(Res, 4);
}
/// PPC64 ELF
RelocToApply visitELF_PPC64_ADDR32(RelocationRef R, uint64_t Value) {
- int64_t Addend;
- getELFRelocationAddend(R, Addend);
+ int64_t Addend = getELFAddend(R);
uint32_t Res = (Value + Addend) & 0xFFFFFFFF;
return RelocToApply(Res, 4);
}
RelocToApply visitELF_PPC64_ADDR64(RelocationRef R, uint64_t Value) {
- int64_t Addend;
- getELFRelocationAddend(R, Addend);
+ int64_t Addend = getELFAddend(R);
return RelocToApply(Value + Addend, 8);
}
/// PPC32 ELF
RelocToApply visitELF_PPC_ADDR32(RelocationRef R, uint64_t Value) {
- int64_t Addend = getELFAddend32BE(R);
+ int64_t Addend = getELFAddend(R);
uint32_t Res = (Value + Addend) & 0xFFFFFFFF;
return RelocToApply(Res, 4);
}
/// MIPS ELF
RelocToApply visitELF_MIPS_32(RelocationRef R, uint64_t Value) {
- int64_t Addend;
- getELFRelocationAddend(R, Addend);
+ uint32_t Res = Value & 0xFFFFFFFF;
+ return RelocToApply(Res, 4);
+ }
+
+ /// MIPS64 ELF
+ RelocToApply visitELF_MIPS64_32(RelocationRef R, uint64_t Value) {
+ int64_t Addend = getELFAddend(R);
uint32_t Res = (Value + Addend) & 0xFFFFFFFF;
return RelocToApply(Res, 4);
}
- RelocToApply visitELF_MIPS_64(RelocationRef R, uint64_t Value) {
- int64_t Addend;
- getELFRelocationAddend(R, Addend);
+ RelocToApply visitELF_MIPS64_64(RelocationRef R, uint64_t Value) {
+ int64_t Addend = getELFAddend(R);
uint64_t Res = (Value + Addend);
return RelocToApply(Res, 8);
}
// AArch64 ELF
RelocToApply visitELF_AARCH64_ABS32(RelocationRef R, uint64_t Value) {
- int64_t Addend;
- getELFRelocationAddend(R, Addend);
+ int64_t Addend = getELFAddend(R);
int64_t Res = Value + Addend;
// Overflow check allows for both signed and unsigned interpretation.
}
RelocToApply visitELF_AARCH64_ABS64(RelocationRef R, uint64_t Value) {
- int64_t Addend;
- getELFRelocationAddend(R, Addend);
+ int64_t Addend = getELFAddend(R);
return RelocToApply(Value + Addend, 8);
}
// SystemZ ELF
RelocToApply visitELF_390_32(RelocationRef R, uint64_t Value) {
- int64_t Addend = getELFAddend64BE(R);
+ int64_t Addend = getELFAddend(R);
int64_t Res = Value + Addend;
// Overflow check allows for both signed and unsigned interpretation.
}
RelocToApply visitELF_390_64(RelocationRef R, uint64_t Value) {
- int64_t Addend = getELFAddend64BE(R);
+ int64_t Addend = getELFAddend(R);
return RelocToApply(Value + Addend, 8);
}
RelocToApply visitELF_SPARC_32(RelocationRef R, uint32_t Value) {
- int32_t Addend = getELFAddend32BE(R);
+ int32_t Addend = getELFAddend(R);
return RelocToApply(Value + Addend, 4);
}
RelocToApply visitELF_SPARCV9_32(RelocationRef R, uint64_t Value) {
- int32_t Addend = getELFAddend64BE(R);
+ int32_t Addend = getELFAddend(R);
return RelocToApply(Value + Addend, 4);
}
RelocToApply visitELF_SPARCV9_64(RelocationRef R, uint64_t Value) {
- int64_t Addend = getELFAddend64BE(R);
+ int64_t Addend = getELFAddend(R);
return RelocToApply(Value + Addend, 8);
}
RelocToApply visitELF_ARM_ABS32(RelocationRef R, uint64_t Value) {
- int64_t Addend;
- getELFRelocationAddend(R, Addend);
- int64_t Res = Value + Addend;
+ int64_t Res = Value;
// Overflow check allows for both signed and unsigned interpretation.
if (Res < INT32_MIN || Res > UINT32_MAX)
RelocToApply visitCOFF_AMD64_ADDR64(RelocationRef R, uint64_t Value) {
return RelocToApply(Value, /*Width=*/8);
}
+
+ // X86_64 MachO
+ RelocToApply visitMACHO_X86_64_UNSIGNED(RelocationRef R, uint64_t Value) {
+ uint8_t Length = getLengthMachO64(R);
+ Length = 1<<Length;
+ return RelocToApply(Value, Length);
+ }
};
}