| //===- 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/ObjectFile.h" |
| #include "llvm/ADT/OwningPtr.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "llvm/Support/FileSystem.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| #include "llvm/Support/system_error.h" |
| |
| using namespace llvm; |
| using namespace object; |
| |
| void ObjectFile::anchor() { } |
| |
| ObjectFile::ObjectFile(unsigned int Type, MemoryBuffer *source) |
| : Binary(Type, source) { |
| } |
| |
| 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)); |
| } |
| |
| ObjectFile *ObjectFile::createObjectFile(MemoryBuffer *Object) { |
| if (Object->getBufferSize() < 64) { |
| delete Object; |
| return 0; |
| } |
| |
| sys::fs::file_magic Type = sys::fs::identify_magic(Object->getBuffer()); |
| 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: |
| delete Object; |
| return 0; |
| 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: |
| 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"); |
| } |
| |
| ObjectFile *ObjectFile::createObjectFile(StringRef ObjectPath) { |
| OwningPtr<MemoryBuffer> File; |
| if (MemoryBuffer::getFile(ObjectPath, File)) |
| return NULL; |
| return createObjectFile(File.take()); |
| } |