1 //===- SymbolicFile.cpp - Interface that only provides symbols ------------===// 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 a file format independent SymbolicFile class. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "llvm/Object/SymbolicFile.h" 14 #include "llvm/ADT/StringRef.h" 15 #include "llvm/BinaryFormat/Magic.h" 16 #include "llvm/Object/COFFImportFile.h" 17 #include "llvm/Object/Error.h" 18 #include "llvm/Object/IRObjectFile.h" 19 #include "llvm/Object/ObjectFile.h" 20 #include "llvm/Support/Compiler.h" 21 #include "llvm/Support/Error.h" 22 #include "llvm/Support/ErrorHandling.h" 23 #include "llvm/Support/ErrorOr.h" 24 #include "llvm/Support/FileSystem.h" 25 #include "llvm/Support/MemoryBuffer.h" 26 #include <algorithm> 27 #include <memory> 28 29 using namespace llvm; 30 using namespace object; 31 32 SymbolicFile::SymbolicFile(unsigned int Type, MemoryBufferRef Source) 33 : Binary(Type, Source) {} 34 35 SymbolicFile::~SymbolicFile() = default; 36 37 Expected<std::unique_ptr<SymbolicFile>> 38 SymbolicFile::createSymbolicFile(MemoryBufferRef Object, file_magic Type, 39 LLVMContext *Context) { 40 StringRef Data = Object.getBuffer(); 41 if (Type == file_magic::unknown) 42 Type = identify_magic(Data); 43 44 switch (Type) { 45 case file_magic::bitcode: 46 if (Context) 47 return IRObjectFile::create(Object, *Context); 48 LLVM_FALLTHROUGH; 49 case file_magic::unknown: 50 case file_magic::archive: 51 case file_magic::coff_cl_gl_object: 52 case file_magic::macho_universal_binary: 53 case file_magic::windows_resource: 54 case file_magic::pdb: 55 case file_magic::minidump: 56 case file_magic::tapi_file: 57 return errorCodeToError(object_error::invalid_file_type); 58 case file_magic::elf: 59 case file_magic::elf_executable: 60 case file_magic::elf_shared_object: 61 case file_magic::elf_core: 62 case file_magic::macho_executable: 63 case file_magic::macho_fixed_virtual_memory_shared_lib: 64 case file_magic::macho_core: 65 case file_magic::macho_preload_executable: 66 case file_magic::macho_dynamically_linked_shared_lib: 67 case file_magic::macho_dynamic_linker: 68 case file_magic::macho_bundle: 69 case file_magic::macho_dynamically_linked_shared_lib_stub: 70 case file_magic::macho_dsym_companion: 71 case file_magic::macho_kext_bundle: 72 case file_magic::pecoff_executable: 73 case file_magic::xcoff_object_32: 74 case file_magic::xcoff_object_64: 75 case file_magic::wasm_object: 76 return ObjectFile::createObjectFile(Object, Type); 77 case file_magic::coff_import_library: 78 return std::unique_ptr<SymbolicFile>(new COFFImportFile(Object)); 79 case file_magic::elf_relocatable: 80 case file_magic::macho_object: 81 case file_magic::coff_object: { 82 Expected<std::unique_ptr<ObjectFile>> Obj = 83 ObjectFile::createObjectFile(Object, Type); 84 if (!Obj || !Context) 85 return std::move(Obj); 86 87 Expected<MemoryBufferRef> BCData = 88 IRObjectFile::findBitcodeInObject(*Obj->get()); 89 if (!BCData) { 90 consumeError(BCData.takeError()); 91 return std::move(Obj); 92 } 93 94 return IRObjectFile::create( 95 MemoryBufferRef(BCData->getBuffer(), Object.getBufferIdentifier()), 96 *Context); 97 } 98 } 99 llvm_unreachable("Unexpected Binary File Type"); 100 } 101