Binary.cpp revision f12745f7a7e68c05c89ebd515b9b4faedce37dd0 
1//===- Binary.cpp - A generic binary 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 the Binary class.
11//
12//===----------------------------------------------------------------------===//
13
14#include "llvm/Object/Binary.h"
15#include "llvm/ADT/StringRef.h"
16#include "llvm/Support/MemoryBuffer.h"
17#include "llvm/Support/Path.h"
18
19// Include headers for createBinary.
20#include "llvm/Object/Archive.h"
21#include "llvm/Object/COFF.h"
22#include "llvm/Object/ObjectFile.h"
23
24using namespace llvm;
25using namespace object;
26
27Binary::~Binary() {
28  delete Data;
29}
30
31Binary::Binary(unsigned int Type, MemoryBuffer *Source)
32  : TypeID(Type)
33  , Data(Source) {}
34
35StringRef Binary::getData() const {
36  return Data->getBuffer();
37}
38
39StringRef Binary::getFileName() const {
40  return Data->getBufferIdentifier();
41}
42
43error_code object::createBinary(MemoryBuffer *Source,
44                                OwningPtr<Binary> &Result) {
45  OwningPtr<MemoryBuffer> scopedSource(Source);
46  if (!Source)
47    return make_error_code(errc::invalid_argument);
48  sys::LLVMFileType type = sys::identifyFileType(Source->getBuffer());
49  error_code ec;
50  switch (type) {
51    case sys::Archive_FileType: {
52      OwningPtr<Binary> ret(new Archive(scopedSource.take(), ec));
53      if (ec) return ec;
54      Result.swap(ret);
55      return object_error::success;
56    }
57    case sys::ELF_Relocatable_FileType:
58    case sys::ELF_Executable_FileType:
59    case sys::ELF_SharedObject_FileType:
60    case sys::ELF_Core_FileType: {
61      OwningPtr<Binary> ret(
62        ObjectFile::createELFObjectFile(scopedSource.take()));
63      if (!ret)
64        return object_error::invalid_file_type;
65      Result.swap(ret);
66      return object_error::success;
67    }
68    case sys::Mach_O_Object_FileType:
69    case sys::Mach_O_Executable_FileType:
70    case sys::Mach_O_FixedVirtualMemorySharedLib_FileType:
71    case sys::Mach_O_Core_FileType:
72    case sys::Mach_O_PreloadExecutable_FileType:
73    case sys::Mach_O_DynamicallyLinkedSharedLib_FileType:
74    case sys::Mach_O_DynamicLinker_FileType:
75    case sys::Mach_O_Bundle_FileType:
76    case sys::Mach_O_DynamicallyLinkedSharedLibStub_FileType: {
77      OwningPtr<Binary> ret(
78        ObjectFile::createMachOObjectFile(scopedSource.take()));
79      if (!ret)
80        return object_error::invalid_file_type;
81      Result.swap(ret);
82      return object_error::success;
83    }
84    case sys::COFF_FileType: {
85      OwningPtr<Binary> ret(new COFFObjectFile(scopedSource.take(), ec));
86      if (ec) return ec;
87      Result.swap(ret);
88      return object_error::success;
89    }
90    default: // Unrecognized object file format.
91      return object_error::invalid_file_type;
92  }
93}
94
95error_code object::createBinary(StringRef Path, OwningPtr<Binary> &Result) {
96  OwningPtr<MemoryBuffer> File;
97  if (error_code ec = MemoryBuffer::getFileOrSTDIN(Path, File))
98    return ec;
99  return createBinary(File.take(), Result);
100}
101