1 //===- ObjectFile.cpp - File format independent object file -----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines a file format independent ObjectFile class.
12 //===----------------------------------------------------------------------===//
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"
22 using namespace object;
24 void ObjectFile::anchor() { }
26 ObjectFile::ObjectFile(unsigned int Type, MemoryBuffer *source)
27 : Binary(Type, source) {
30 error_code ObjectFile::getSymbolAlignment(DataRefImpl DRI,
31 uint32_t &Result) const {
33 return object_error::success;
36 section_iterator ObjectFile::getRelocatedSection(DataRefImpl Sec) const {
37 return section_iterator(SectionRef(Sec, this));
40 ObjectFile *ObjectFile::createObjectFile(MemoryBuffer *Object) {
41 if (!Object || Object->getBufferSize() < 64)
43 sys::LLVMFileType type = sys::identifyFileType(Object->getBuffer());
45 case sys::Unknown_FileType:
47 case sys::ELF_Relocatable_FileType:
48 case sys::ELF_Executable_FileType:
49 case sys::ELF_SharedObject_FileType:
50 case sys::ELF_Core_FileType:
51 return createELFObjectFile(Object);
52 case sys::Mach_O_Object_FileType:
53 case sys::Mach_O_Executable_FileType:
54 case sys::Mach_O_FixedVirtualMemorySharedLib_FileType:
55 case sys::Mach_O_Core_FileType:
56 case sys::Mach_O_PreloadExecutable_FileType:
57 case sys::Mach_O_DynamicallyLinkedSharedLib_FileType:
58 case sys::Mach_O_DynamicLinker_FileType:
59 case sys::Mach_O_Bundle_FileType:
60 case sys::Mach_O_DynamicallyLinkedSharedLibStub_FileType:
61 case sys::Mach_O_DSYMCompanion_FileType:
62 return createMachOObjectFile(Object);
63 case sys::COFF_FileType:
64 return createCOFFObjectFile(Object);
66 llvm_unreachable("Unexpected Object File Type");
70 ObjectFile *ObjectFile::createObjectFile(StringRef ObjectPath) {
71 OwningPtr<MemoryBuffer> File;
72 if (MemoryBuffer::getFile(ObjectPath, File))
74 return createObjectFile(File.take());