1 //===- Binary.cpp - A generic binary file ---------------------------------===// 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/BinaryFormat/Magic.h" 17 #include "llvm/Object/Archive.h" 18 #include "llvm/Object/Error.h" 19 #include "llvm/Object/MachOUniversal.h" 20 #include "llvm/Object/ObjectFile.h" 21 #include "llvm/Object/WindowsResource.h" 22 #include "llvm/Support/Error.h" 23 #include "llvm/Support/ErrorHandling.h" 24 #include "llvm/Support/ErrorOr.h" 25 #include "llvm/Support/FileSystem.h" 26 #include "llvm/Support/MemoryBuffer.h" 27 #include <algorithm> 28 #include <memory> 29 #include <system_error> 30 31 using namespace llvm; 32 using namespace object; 33 34 Binary::~Binary() = default; 35 Binary(unsigned int Type,MemoryBufferRef Source)36Binary::Binary(unsigned int Type, MemoryBufferRef Source) 37 : TypeID(Type), Data(Source) {} 38 getData() const39StringRef Binary::getData() const { return Data.getBuffer(); } 40 getFileName() const41StringRef Binary::getFileName() const { return Data.getBufferIdentifier(); } 42 getMemoryBufferRef() const43MemoryBufferRef Binary::getMemoryBufferRef() const { return Data; } 44 createBinary(MemoryBufferRef Buffer,LLVMContext * Context)45Expected<std::unique_ptr<Binary>> object::createBinary(MemoryBufferRef Buffer, 46 LLVMContext *Context) { 47 file_magic Type = identify_magic(Buffer.getBuffer()); 48 49 switch (Type) { 50 case file_magic::archive: 51 return Archive::create(Buffer); 52 case file_magic::elf: 53 case file_magic::elf_relocatable: 54 case file_magic::elf_executable: 55 case file_magic::elf_shared_object: 56 case file_magic::elf_core: 57 case file_magic::macho_object: 58 case file_magic::macho_executable: 59 case file_magic::macho_fixed_virtual_memory_shared_lib: 60 case file_magic::macho_core: 61 case file_magic::macho_preload_executable: 62 case file_magic::macho_dynamically_linked_shared_lib: 63 case file_magic::macho_dynamic_linker: 64 case file_magic::macho_bundle: 65 case file_magic::macho_dynamically_linked_shared_lib_stub: 66 case file_magic::macho_dsym_companion: 67 case file_magic::macho_kext_bundle: 68 case file_magic::coff_object: 69 case file_magic::coff_import_library: 70 case file_magic::pecoff_executable: 71 case file_magic::bitcode: 72 case file_magic::wasm_object: 73 return ObjectFile::createSymbolicFile(Buffer, Type, Context); 74 case file_magic::macho_universal_binary: 75 return MachOUniversalBinary::create(Buffer); 76 case file_magic::windows_resource: 77 return WindowsResource::createWindowsResource(Buffer); 78 case file_magic::pdb: 79 // PDB does not support the Binary interface. 80 return errorCodeToError(object_error::invalid_file_type); 81 case file_magic::unknown: 82 case file_magic::coff_cl_gl_object: 83 // Unrecognized object file format. 84 return errorCodeToError(object_error::invalid_file_type); 85 } 86 llvm_unreachable("Unexpected Binary File Type"); 87 } 88 createBinary(StringRef Path)89Expected<OwningBinary<Binary>> object::createBinary(StringRef Path) { 90 ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr = 91 MemoryBuffer::getFileOrSTDIN(Path); 92 if (std::error_code EC = FileOrErr.getError()) 93 return errorCodeToError(EC); 94 std::unique_ptr<MemoryBuffer> &Buffer = FileOrErr.get(); 95 96 Expected<std::unique_ptr<Binary>> BinOrErr = 97 createBinary(Buffer->getMemBufferRef()); 98 if (!BinOrErr) 99 return BinOrErr.takeError(); 100 std::unique_ptr<Binary> &Bin = BinOrErr.get(); 101 102 return OwningBinary<Binary>(std::move(Bin), std::move(Buffer)); 103 } 104