lib/Object/Binary.cpp

   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                                        sys::fs::file_magic Type) {
  46   OwningPtr<MemoryBuffer> scopedSource(Source);
  47   if (Type == sys::fs::file_magic::unknown)
  48     Type = sys::fs::identify_magic(Source->getBuffer());
  49
  50   switch (Type) {
  51     case sys::fs::file_magic::archive:
  52       return Archive::create(scopedSource.take());
  53     case sys::fs::file_magic::elf_relocatable:
  54     case sys::fs::file_magic::elf_executable:
  55     case sys::fs::file_magic::elf_shared_object:
  56     case sys::fs::file_magic::elf_core:
  57     case sys::fs::file_magic::macho_object:
  58     case sys::fs::file_magic::macho_executable:
  59     case sys::fs::file_magic::macho_fixed_virtual_memory_shared_lib:
  60     case sys::fs::file_magic::macho_core:
  61     case sys::fs::file_magic::macho_preload_executable:
  62     case sys::fs::file_magic::macho_dynamically_linked_shared_lib:
  63     case sys::fs::file_magic::macho_dynamic_linker:
  64     case sys::fs::file_magic::macho_bundle:
  65     case sys::fs::file_magic::macho_dynamically_linked_shared_lib_stub:
  66     case sys::fs::file_magic::macho_dsym_companion:
  67     case sys::fs::file_magic::coff_object:
  68     case sys::fs::file_magic::coff_import_library:
  69     case sys::fs::file_magic::pecoff_executable:
  70       return ObjectFile::createObjectFile(scopedSource.take(), true, Type);
  71     case sys::fs::file_magic::macho_universal_binary:
  72       return MachOUniversalBinary::create(scopedSource.take());
  73     case sys::fs::file_magic::unknown:
  74     case sys::fs::file_magic::bitcode:
  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   OwningPtr<MemoryBuffer> File;
  84   if (error_code EC = MemoryBuffer::getFileOrSTDIN(Path, File))
  85     return EC;
  86   return createBinary(File.take());
  87 }