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