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/FileSystem.h"
17 #include "llvm/Support/MemoryBuffer.h"
18 #include "llvm/Support/Path.h"
19 
20 // Include headers for createBinary.
21 #include "llvm/Object/Archive.h"
22 #include "llvm/Object/MachOUniversal.h"
23 #include "llvm/Object/ObjectFile.h"
24 
25 using namespace llvm;
26 using namespace object;
27 
28 Binary::~Binary() {
29   if (BufferOwned)
30     delete Data;
31 }
32 
33 Binary::Binary(unsigned int Type, MemoryBuffer *Source, bool BufferOwned)
34   : TypeID(Type), BufferOwned(BufferOwned), Data(Source) {}
35 
36 StringRef Binary::getData() const {
37   return Data->getBuffer();
38 }
39 
40 StringRef Binary::getFileName() const {
41   return Data->getBufferIdentifier();
42 }
43 
44 ErrorOr<Binary *> object::createBinary(MemoryBuffer *Source,
45                                        LLVMContext *Context) {
46   std::unique_ptr<MemoryBuffer> scopedSource(Source);
47   sys::fs::file_magic Type = sys::fs::identify_magic(Source->getBuffer());
48 
49   switch (Type) {
50     case sys::fs::file_magic::archive:
51       return Archive::create(scopedSource.release());
52     case sys::fs::file_magic::elf_relocatable:
53     case sys::fs::file_magic::elf_executable:
54     case sys::fs::file_magic::elf_shared_object:
55     case sys::fs::file_magic::elf_core:
56     case sys::fs::file_magic::macho_object:
57     case sys::fs::file_magic::macho_executable:
58     case sys::fs::file_magic::macho_fixed_virtual_memory_shared_lib:
59     case sys::fs::file_magic::macho_core:
60     case sys::fs::file_magic::macho_preload_executable:
61     case sys::fs::file_magic::macho_dynamically_linked_shared_lib:
62     case sys::fs::file_magic::macho_dynamic_linker:
63     case sys::fs::file_magic::macho_bundle:
64     case sys::fs::file_magic::macho_dynamically_linked_shared_lib_stub:
65     case sys::fs::file_magic::macho_dsym_companion:
66     case sys::fs::file_magic::coff_object:
67     case sys::fs::file_magic::coff_import_library:
68     case sys::fs::file_magic::pecoff_executable:
69     case sys::fs::file_magic::bitcode:
70       return ObjectFile::createSymbolicFile(scopedSource.release(), true, Type,
71                                             Context);
72     case sys::fs::file_magic::macho_universal_binary:
73       return MachOUniversalBinary::create(scopedSource.release());
74     case sys::fs::file_magic::unknown:
75     case sys::fs::file_magic::windows_resource:
76       // Unrecognized object file format.
77       return object_error::invalid_file_type;
78   }
79   llvm_unreachable("Unexpected Binary File Type");
80 }
81 
82 ErrorOr<Binary *> object::createBinary(StringRef Path) {
83   std::unique_ptr<MemoryBuffer> File;
84   if (error_code EC = MemoryBuffer::getFileOrSTDIN(Path, File))
85     return EC;
86   return createBinary(File.release());
87 }
88