//===- ObjectFile.cpp - File format independent object file -----*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // This file defines a file format independent ObjectFile class. // //===----------------------------------------------------------------------===// #include "llvm/Object/COFF.h" #include "llvm/Object/MachO.h" #include "llvm/Object/ObjectFile.h" #include "llvm/Support/ErrorHandling.h" #include "llvm/Support/FileSystem.h" #include "llvm/Support/MemoryBuffer.h" #include "llvm/Support/raw_ostream.h" #include <system_error> using namespace llvm; using namespace object; void ObjectFile::anchor() { } ObjectFile::ObjectFile(unsigned int Type, MemoryBufferRef Source) : SymbolicFile(Type, Source) {} std::error_code ObjectFile::printSymbolName(raw_ostream &OS, DataRefImpl Symb) const { StringRef Name; if (std::error_code EC = getSymbolName(Symb, Name)) return EC; OS << Name; return object_error::success; } std::error_code ObjectFile::getSymbolAlignment(DataRefImpl DRI, uint32_t &Result) const { Result = 0; return object_error::success; } section_iterator ObjectFile::getRelocatedSection(DataRefImpl Sec) const { return section_iterator(SectionRef(Sec, this)); } ErrorOr<std::unique_ptr<ObjectFile>> ObjectFile::createObjectFile(MemoryBufferRef Object, sys::fs::file_magic Type) { StringRef Data = Object.getBuffer(); if (Type == sys::fs::file_magic::unknown) Type = sys::fs::identify_magic(Data); switch (Type) { case sys::fs::file_magic::unknown: case sys::fs::file_magic::bitcode: case sys::fs::file_magic::archive: case sys::fs::file_magic::macho_universal_binary: case sys::fs::file_magic::windows_resource: return object_error::invalid_file_type; case sys::fs::file_magic::elf: case sys::fs::file_magic::elf_relocatable: case sys::fs::file_magic::elf_executable: case sys::fs::file_magic::elf_shared_object: case sys::fs::file_magic::elf_core: return createELFObjectFile(Object); case sys::fs::file_magic::macho_object: case sys::fs::file_magic::macho_executable: case sys::fs::file_magic::macho_fixed_virtual_memory_shared_lib: case sys::fs::file_magic::macho_core: case sys::fs::file_magic::macho_preload_executable: case sys::fs::file_magic::macho_dynamically_linked_shared_lib: case sys::fs::file_magic::macho_dynamic_linker: case sys::fs::file_magic::macho_bundle: case sys::fs::file_magic::macho_dynamically_linked_shared_lib_stub: case sys::fs::file_magic::macho_dsym_companion: case sys::fs::file_magic::macho_kext_bundle: return createMachOObjectFile(Object); case sys::fs::file_magic::coff_object: case sys::fs::file_magic::coff_import_library: case sys::fs::file_magic::pecoff_executable: return createCOFFObjectFile(Object); } llvm_unreachable("Unexpected Object File Type"); } ErrorOr<OwningBinary<ObjectFile>> ObjectFile::createObjectFile(StringRef ObjectPath) { ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr = MemoryBuffer::getFile(ObjectPath); if (std::error_code EC = FileOrErr.getError()) return EC; std::unique_ptr<MemoryBuffer> Buffer = std::move(FileOrErr.get()); ErrorOr<std::unique_ptr<ObjectFile>> ObjOrErr = createObjectFile(Buffer->getMemBufferRef()); if (std::error_code EC = ObjOrErr.getError()) return EC; std::unique_ptr<ObjectFile> Obj = std::move(ObjOrErr.get()); return OwningBinary<ObjectFile>(std::move(Obj), std::move(Buffer)); }