//===- 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/MemoryBuffer.h" #include "llvm/Support/Path.h" #include "llvm/Support/system_error.h" using namespace llvm; using namespace object; ObjectFile::ObjectFile(MemoryBuffer *Object) : MapFile(Object) { assert(MapFile && "Must be a valid MemoryBuffer!"); base = reinterpret_cast<const uint8_t *>(MapFile->getBufferStart()); } ObjectFile::~ObjectFile() { delete MapFile; } StringRef ObjectFile::getFilename() const { return MapFile->getBufferIdentifier(); } ObjectFile *ObjectFile::createObjectFile(MemoryBuffer *Object) { if (!Object || Object->getBufferSize() < 64) return 0; sys::LLVMFileType type = sys::IdentifyFileType(Object->getBufferStart(), static_cast<unsigned>(Object->getBufferSize())); switch (type) { case sys::ELF_Relocatable_FileType: case sys::ELF_Executable_FileType: case sys::ELF_SharedObject_FileType: case sys::ELF_Core_FileType: return createELFObjectFile(Object); case sys::Mach_O_Object_FileType: case sys::Mach_O_Executable_FileType: case sys::Mach_O_FixedVirtualMemorySharedLib_FileType: case sys::Mach_O_Core_FileType: case sys::Mach_O_PreloadExecutable_FileType: case sys::Mach_O_DynamicallyLinkedSharedLib_FileType: case sys::Mach_O_DynamicLinker_FileType: case sys::Mach_O_Bundle_FileType: case sys::Mach_O_DynamicallyLinkedSharedLibStub_FileType: return createMachOObjectFile(Object); case sys::COFF_FileType: return createCOFFObjectFile(Object); default: llvm_unreachable("Unknown Object File Type"); } } ObjectFile *ObjectFile::createObjectFile(StringRef ObjectPath) { OwningPtr<MemoryBuffer> File; if (error_code ec = MemoryBuffer::getFile(ObjectPath, File)) return NULL; return createObjectFile(File.take()); }