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//===- Binary.cpp - A generic binary file ---------------------------------===//
//
// 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 the Binary class.
//
//===----------------------------------------------------------------------===//
#include "llvm/Object/Binary.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/BinaryFormat/Magic.h"
#include "llvm/Object/Archive.h"
#include "llvm/Object/Error.h"
#include "llvm/Object/MachOUniversal.h"
#include "llvm/Object/Minidump.h"
#include "llvm/Object/ObjectFile.h"
#include "llvm/Object/TapiUniversal.h"
#include "llvm/Object/WindowsResource.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>
#include <system_error>
using namespace llvm;
using namespace object;
Binary::~Binary() = default;
Binary::Binary(unsigned int Type, MemoryBufferRef Source)
: TypeID(Type), Data(Source) {}
StringRef Binary::getData() const { return Data.getBuffer(); }
StringRef Binary::getFileName() const { return Data.getBufferIdentifier(); }
MemoryBufferRef Binary::getMemoryBufferRef() const { return Data; }
Expected<std::unique_ptr<Binary>> object::createBinary(MemoryBufferRef Buffer,
LLVMContext *Context,
bool InitContent) {
file_magic Type = identify_magic(Buffer.getBuffer());
switch (Type) {
case file_magic::archive:
return Archive::create(Buffer);
case file_magic::elf:
case file_magic::elf_relocatable:
case file_magic::elf_executable:
case file_magic::elf_shared_object:
case file_magic::elf_core:
case file_magic::macho_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::coff_object:
case file_magic::coff_import_library:
case file_magic::pecoff_executable:
case file_magic::bitcode:
case file_magic::xcoff_object_32:
case file_magic::xcoff_object_64:
case file_magic::wasm_object:
return ObjectFile::createSymbolicFile(Buffer, Type, Context, InitContent);
case file_magic::macho_universal_binary:
return MachOUniversalBinary::create(Buffer);
case file_magic::windows_resource:
return WindowsResource::createWindowsResource(Buffer);
case file_magic::pdb:
// PDB does not support the Binary interface.
return errorCodeToError(object_error::invalid_file_type);
case file_magic::unknown:
case file_magic::coff_cl_gl_object:
// Unrecognized object file format.
return errorCodeToError(object_error::invalid_file_type);
case file_magic::minidump:
return MinidumpFile::create(Buffer);
case file_magic::tapi_file:
return TapiUniversal::create(Buffer);
}
llvm_unreachable("Unexpected Binary File Type");
}
Expected<OwningBinary<Binary>>
object::createBinary(StringRef Path, LLVMContext *Context, bool InitContent) {
ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr =
MemoryBuffer::getFileOrSTDIN(Path, /*FileSize=*/-1,
/*RequiresNullTerminator=*/false);
if (std::error_code EC = FileOrErr.getError())
return errorCodeToError(EC);
std::unique_ptr<MemoryBuffer> &Buffer = FileOrErr.get();
Expected<std::unique_ptr<Binary>> BinOrErr =
createBinary(Buffer->getMemBufferRef(), Context, InitContent);
if (!BinOrErr)
return BinOrErr.takeError();
std::unique_ptr<Binary> &Bin = BinOrErr.get();
return OwningBinary<Binary>(std::move(Bin), std::move(Buffer));
}
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