1 //===- Binary.cpp - A generic binary file ---------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file defines the Binary class. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "llvm/Object/Binary.h" 14 #include "llvm/ADT/StringRef.h" 15 #include "llvm/BinaryFormat/Magic.h" 16 #include "llvm/Object/Archive.h" 17 #include "llvm/Object/Error.h" 18 #include "llvm/Object/MachOUniversal.h" 19 #include "llvm/Object/Minidump.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 36 Binary::Binary(unsigned int Type, MemoryBufferRef Source) 37 : TypeID(Type), Data(Source) {} 38 39 StringRef Binary::getData() const { return Data.getBuffer(); } 40 41 StringRef Binary::getFileName() const { return Data.getBufferIdentifier(); } 42 43 MemoryBufferRef Binary::getMemoryBufferRef() const { return Data; } 44 45 Expected<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::xcoff_object_32: 73 case file_magic::xcoff_object_64: 74 case file_magic::wasm_object: 75 return ObjectFile::createSymbolicFile(Buffer, Type, Context); 76 case file_magic::macho_universal_binary: 77 return MachOUniversalBinary::create(Buffer); 78 case file_magic::windows_resource: 79 return WindowsResource::createWindowsResource(Buffer); 80 case file_magic::pdb: 81 // PDB does not support the Binary interface. 82 return errorCodeToError(object_error::invalid_file_type); 83 case file_magic::unknown: 84 case file_magic::coff_cl_gl_object: 85 // Unrecognized object file format. 86 return errorCodeToError(object_error::invalid_file_type); 87 case file_magic::minidump: 88 return MinidumpFile::create(Buffer); 89 } 90 llvm_unreachable("Unexpected Binary File Type"); 91 } 92 93 Expected<OwningBinary<Binary>> object::createBinary(StringRef Path) { 94 ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr = 95 MemoryBuffer::getFileOrSTDIN(Path, /*FileSize=*/-1, 96 /*RequiresNullTerminator=*/false); 97 if (std::error_code EC = FileOrErr.getError()) 98 return errorCodeToError(EC); 99 std::unique_ptr<MemoryBuffer> &Buffer = FileOrErr.get(); 100 101 Expected<std::unique_ptr<Binary>> BinOrErr = 102 createBinary(Buffer->getMemBufferRef()); 103 if (!BinOrErr) 104 return BinOrErr.takeError(); 105 std::unique_ptr<Binary> &Bin = BinOrErr.get(); 106 107 return OwningBinary<Binary>(std::move(Bin), std::move(Buffer)); 108 } 109