1//===- ObjectFile.cpp - File format independent object file -----*- C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file defines a file format independent ObjectFile class. 11// 12//===----------------------------------------------------------------------===// 13 14#include "llvm/Object/ObjectFile.h" 15#include "llvm/ADT/OwningPtr.h" 16#include "llvm/Support/ErrorHandling.h" 17#include "llvm/Support/MemoryBuffer.h" 18#include "llvm/Support/Path.h" 19#include "llvm/Support/system_error.h" 20 21using namespace llvm; 22using namespace object; 23 24void ObjectFile::anchor() { } 25 26ObjectFile::ObjectFile(unsigned int Type, MemoryBuffer *source, error_code &ec) 27 : Binary(Type, source) { 28} 29 30ObjectFile *ObjectFile::createObjectFile(MemoryBuffer *Object) { 31 if (!Object || Object->getBufferSize() < 64) 32 return 0; 33 sys::LLVMFileType type = sys::IdentifyFileType(Object->getBufferStart(), 34 static_cast<unsigned>(Object->getBufferSize())); 35 switch (type) { 36 case sys::ELF_Relocatable_FileType: 37 case sys::ELF_Executable_FileType: 38 case sys::ELF_SharedObject_FileType: 39 case sys::ELF_Core_FileType: 40 return createELFObjectFile(Object); 41 case sys::Mach_O_Object_FileType: 42 case sys::Mach_O_Executable_FileType: 43 case sys::Mach_O_FixedVirtualMemorySharedLib_FileType: 44 case sys::Mach_O_Core_FileType: 45 case sys::Mach_O_PreloadExecutable_FileType: 46 case sys::Mach_O_DynamicallyLinkedSharedLib_FileType: 47 case sys::Mach_O_DynamicLinker_FileType: 48 case sys::Mach_O_Bundle_FileType: 49 case sys::Mach_O_DynamicallyLinkedSharedLibStub_FileType: 50 case sys::Mach_O_DSYMCompanion_FileType: 51 return createMachOObjectFile(Object); 52 case sys::COFF_FileType: 53 return createCOFFObjectFile(Object); 54 default: 55 llvm_unreachable("Unknown Object File Type"); 56 } 57} 58 59ObjectFile *ObjectFile::createObjectFile(StringRef ObjectPath) { 60 OwningPtr<MemoryBuffer> File; 61 if (MemoryBuffer::getFile(ObjectPath, File)) 62 return NULL; 63 return createObjectFile(File.take()); 64} 65