| //===- SymbolicFile.cpp - Interface that only provides symbols ------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines a file format independent SymbolicFile class. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/Object/SymbolicFile.h" |
| #include "llvm/ADT/StringRef.h" |
| #include "llvm/BinaryFormat/Magic.h" |
| #include "llvm/Object/COFFImportFile.h" |
| #include "llvm/Object/Error.h" |
| #include "llvm/Object/IRObjectFile.h" |
| #include "llvm/Object/ObjectFile.h" |
| #include "llvm/Support/Compiler.h" |
| #include "llvm/Support/Error.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "llvm/Support/ErrorOr.h" |
| #include "llvm/Support/FileSystem.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| #include <algorithm> |
| #include <memory> |
| |
| using namespace llvm; |
| using namespace object; |
| |
| SymbolicFile::SymbolicFile(unsigned int Type, MemoryBufferRef Source) |
| : Binary(Type, Source) {} |
| |
| SymbolicFile::~SymbolicFile() = default; |
| |
| Expected<std::unique_ptr<SymbolicFile>> |
| SymbolicFile::createSymbolicFile(MemoryBufferRef Object, file_magic Type, |
| LLVMContext *Context, bool InitContent) { |
| StringRef Data = Object.getBuffer(); |
| if (Type == file_magic::unknown) |
| Type = identify_magic(Data); |
| |
| if (!isSymbolicFile(Type, Context)) |
| return errorCodeToError(object_error::invalid_file_type); |
| |
| switch (Type) { |
| case file_magic::bitcode: |
| // Context is guaranteed to be non-null here, because bitcode magic only |
| // indicates a symbolic file when Context is non-null. |
| return IRObjectFile::create(Object, *Context); |
| case file_magic::elf: |
| case file_magic::elf_executable: |
| case file_magic::elf_shared_object: |
| case file_magic::elf_core: |
| case file_magic::goff_object: |
| case file_magic::macho_executable: |
| case file_magic::macho_fixed_virtual_memory_shared_lib: |
| case file_magic::macho_core: |
| case file_magic::macho_preload_executable: |
| case file_magic::macho_dynamically_linked_shared_lib: |
| case file_magic::macho_dynamic_linker: |
| case file_magic::macho_bundle: |
| case file_magic::macho_dynamically_linked_shared_lib_stub: |
| case file_magic::macho_dsym_companion: |
| case file_magic::macho_kext_bundle: |
| case file_magic::pecoff_executable: |
| case file_magic::xcoff_object_32: |
| case file_magic::xcoff_object_64: |
| case file_magic::wasm_object: |
| return ObjectFile::createObjectFile(Object, Type, InitContent); |
| case file_magic::coff_import_library: |
| return std::unique_ptr<SymbolicFile>(new COFFImportFile(Object)); |
| case file_magic::elf_relocatable: |
| case file_magic::macho_object: |
| case file_magic::coff_object: { |
| Expected<std::unique_ptr<ObjectFile>> Obj = |
| ObjectFile::createObjectFile(Object, Type, InitContent); |
| if (!Obj || !Context) |
| return std::move(Obj); |
| |
| Expected<MemoryBufferRef> BCData = |
| IRObjectFile::findBitcodeInObject(*Obj->get()); |
| if (!BCData) { |
| consumeError(BCData.takeError()); |
| return std::move(Obj); |
| } |
| |
| return IRObjectFile::create( |
| MemoryBufferRef(BCData->getBuffer(), Object.getBufferIdentifier()), |
| *Context); |
| } |
| default: |
| llvm_unreachable("Unexpected Binary File Type"); |
| } |
| } |
| |
| bool SymbolicFile::isSymbolicFile(file_magic Type, const LLVMContext *Context) { |
| switch (Type) { |
| case file_magic::bitcode: |
| return Context != nullptr; |
| case file_magic::elf: |
| case file_magic::elf_executable: |
| case file_magic::elf_shared_object: |
| case file_magic::elf_core: |
| case file_magic::goff_object: |
| case file_magic::macho_executable: |
| case file_magic::macho_fixed_virtual_memory_shared_lib: |
| case file_magic::macho_core: |
| case file_magic::macho_preload_executable: |
| case file_magic::macho_dynamically_linked_shared_lib: |
| case file_magic::macho_dynamic_linker: |
| case file_magic::macho_bundle: |
| case file_magic::macho_dynamically_linked_shared_lib_stub: |
| case file_magic::macho_dsym_companion: |
| case file_magic::macho_kext_bundle: |
| case file_magic::pecoff_executable: |
| case file_magic::xcoff_object_32: |
| case file_magic::xcoff_object_64: |
| case file_magic::wasm_object: |
| case file_magic::coff_import_library: |
| case file_magic::elf_relocatable: |
| case file_magic::macho_object: |
| case file_magic::coff_object: |
| return true; |
| default: |
| return false; |
| } |
| } |