namespace llvm {
using namespace object;
-ErrorOr<ObjectFile *> ObjectFile::createELFObjectFile(MemoryBuffer *Obj) {
- std::pair<unsigned char, unsigned char> Ident = getElfArchType(Obj);
+ELFObjectFileBase::ELFObjectFileBase(unsigned int Type, MemoryBufferRef Source)
+ : ObjectFile(Type, Source) {}
+
+ErrorOr<std::unique_ptr<ObjectFile>>
+ObjectFile::createELFObjectFile(MemoryBufferRef Obj) {
+ std::pair<unsigned char, unsigned char> Ident =
+ getElfArchType(Obj.getBuffer());
std::size_t MaxAlignment =
- 1ULL << countTrailingZeros(uintptr_t(Obj->getBufferStart()));
+ 1ULL << countTrailingZeros(uintptr_t(Obj.getBufferStart()));
- error_code EC;
- OwningPtr<ObjectFile> R;
- if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2LSB)
-#if !LLVM_IS_UNALIGNED_ACCESS_FAST
- if (MaxAlignment >= 4)
- R.reset(new ELFObjectFile<ELFType<support::little, 4, false> >(Obj, EC));
- else
-#endif
- if (MaxAlignment >= 2)
- R.reset(new ELFObjectFile<ELFType<support::little, 2, false> >(Obj, EC));
- else
- llvm_unreachable("Invalid alignment for ELF file!");
- else if (Ident.first == ELF::ELFCLASS32 && Ident.second == ELF::ELFDATA2MSB)
-#if !LLVM_IS_UNALIGNED_ACCESS_FAST
- if (MaxAlignment >= 4)
- R.reset(new ELFObjectFile<ELFType<support::big, 4, false> >(Obj, EC));
- else
-#endif
- if (MaxAlignment >= 2)
- R.reset(new ELFObjectFile<ELFType<support::big, 2, false> >(Obj, EC));
- else
- llvm_unreachable("Invalid alignment for ELF file!");
- else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2MSB)
-#if !LLVM_IS_UNALIGNED_ACCESS_FAST
- if (MaxAlignment >= 8)
- R.reset(new ELFObjectFile<ELFType<support::big, 8, true> >(Obj, EC));
- else
-#endif
- if (MaxAlignment >= 2)
- R.reset(new ELFObjectFile<ELFType<support::big, 2, true> >(Obj, EC));
- else
- llvm_unreachable("Invalid alignment for ELF file!");
- else if (Ident.first == ELF::ELFCLASS64 && Ident.second == ELF::ELFDATA2LSB) {
-#if !LLVM_IS_UNALIGNED_ACCESS_FAST
- if (MaxAlignment >= 8)
- R.reset(new ELFObjectFile<ELFType<support::little, 8, true> >(Obj, EC));
- else
-#endif
- if (MaxAlignment >= 2)
- R.reset(new ELFObjectFile<ELFType<support::little, 2, true> >(Obj, EC));
- else
- llvm_unreachable("Invalid alignment for ELF file!");
+ if (MaxAlignment < 2)
+ return object_error::parse_failed;
+
+ std::error_code EC;
+ std::unique_ptr<ObjectFile> R;
+ if (Ident.first == ELF::ELFCLASS32) {
+ if (Ident.second == ELF::ELFDATA2LSB)
+ R.reset(new ELFObjectFile<ELFType<support::little, false>>(Obj, EC));
+ else if (Ident.second == ELF::ELFDATA2MSB)
+ R.reset(new ELFObjectFile<ELFType<support::big, false>>(Obj, EC));
+ else
+ return object_error::parse_failed;
+ } else if (Ident.first == ELF::ELFCLASS64) {
+ if (Ident.second == ELF::ELFDATA2LSB)
+ R.reset(new ELFObjectFile<ELFType<support::little, true>>(Obj, EC));
+ else if (Ident.second == ELF::ELFDATA2MSB)
+ R.reset(new ELFObjectFile<ELFType<support::big, true>>(Obj, EC));
+ else
+ return object_error::parse_failed;
+ } else {
+ return object_error::parse_failed;
}
- else
- report_fatal_error("Buffer is not an ELF object file!");
if (EC)
return EC;
- return R.take();
+ return std::move(R);
}
} // end namespace llvm