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 ~Binary()28Binary::~Binary() {} 29 Binary(unsigned int Type,MemoryBufferRef Source)30Binary::Binary(unsigned int Type, MemoryBufferRef Source) 31 : TypeID(Type), Data(Source) {} 32 getData() const33StringRef Binary::getData() const { return Data.getBuffer(); } 34 getFileName() const35StringRef Binary::getFileName() const { return Data.getBufferIdentifier(); } 36 getMemoryBufferRef() const37MemoryBufferRef Binary::getMemoryBufferRef() const { return Data; } 38 createBinary(MemoryBufferRef Buffer,LLVMContext * Context)39Expected<std::unique_ptr<Binary>> object::createBinary(MemoryBufferRef Buffer, 40 LLVMContext *Context) { 41 sys::fs::file_magic Type = sys::fs::identify_magic(Buffer.getBuffer()); 42 43 switch (Type) { 44 case sys::fs::file_magic::archive: 45 return Archive::create(Buffer); 46 case sys::fs::file_magic::elf: 47 case sys::fs::file_magic::elf_relocatable: 48 case sys::fs::file_magic::elf_executable: 49 case sys::fs::file_magic::elf_shared_object: 50 case sys::fs::file_magic::elf_core: 51 case sys::fs::file_magic::macho_object: 52 case sys::fs::file_magic::macho_executable: 53 case sys::fs::file_magic::macho_fixed_virtual_memory_shared_lib: 54 case sys::fs::file_magic::macho_core: 55 case sys::fs::file_magic::macho_preload_executable: 56 case sys::fs::file_magic::macho_dynamically_linked_shared_lib: 57 case sys::fs::file_magic::macho_dynamic_linker: 58 case sys::fs::file_magic::macho_bundle: 59 case sys::fs::file_magic::macho_dynamically_linked_shared_lib_stub: 60 case sys::fs::file_magic::macho_dsym_companion: 61 case sys::fs::file_magic::macho_kext_bundle: 62 case sys::fs::file_magic::coff_object: 63 case sys::fs::file_magic::coff_import_library: 64 case sys::fs::file_magic::pecoff_executable: 65 case sys::fs::file_magic::bitcode: 66 return ObjectFile::createSymbolicFile(Buffer, Type, Context); 67 case sys::fs::file_magic::macho_universal_binary: 68 return MachOUniversalBinary::create(Buffer); 69 case sys::fs::file_magic::unknown: 70 case sys::fs::file_magic::windows_resource: 71 // Unrecognized object file format. 72 return errorCodeToError(object_error::invalid_file_type); 73 } 74 llvm_unreachable("Unexpected Binary File Type"); 75 } 76 createBinary(StringRef Path)77Expected<OwningBinary<Binary>> object::createBinary(StringRef Path) { 78 ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr = 79 MemoryBuffer::getFileOrSTDIN(Path); 80 if (std::error_code EC = FileOrErr.getError()) 81 return errorCodeToError(EC); 82 std::unique_ptr<MemoryBuffer> &Buffer = FileOrErr.get(); 83 84 Expected<std::unique_ptr<Binary>> BinOrErr = 85 createBinary(Buffer->getMemBufferRef()); 86 if (!BinOrErr) 87 return BinOrErr.takeError(); 88 std::unique_ptr<Binary> &Bin = BinOrErr.get(); 89 90 return OwningBinary<Binary>(std::move(Bin), std::move(Buffer)); 91 } 92