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a0789cb92a
Some background: One can pass compiled resource files (.res files) directly to the linker on Windows. If a resource file is given, the linker will run "cvtres" command in background to convert the resource file to a COFF file to link it. What I'm trying to do with this patch is to make the linker to recognize the resource file by file magic, so that it can run cvtres command. Differential Revision: http://llvm-reviews.chandlerc.com/D1943 llvm-svn: 192742
118 lines
3.8 KiB
C++
118 lines
3.8 KiB
C++
//===- Binary.cpp - A generic binary file -----------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the Binary class.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Object/Binary.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Path.h"
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// Include headers for createBinary.
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#include "llvm/Object/Archive.h"
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#include "llvm/Object/COFF.h"
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#include "llvm/Object/MachOUniversal.h"
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#include "llvm/Object/ObjectFile.h"
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using namespace llvm;
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using namespace object;
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Binary::~Binary() {
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delete Data;
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}
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Binary::Binary(unsigned int Type, MemoryBuffer *Source)
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: TypeID(Type)
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, Data(Source) {}
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StringRef Binary::getData() const {
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return Data->getBuffer();
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}
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StringRef Binary::getFileName() const {
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return Data->getBufferIdentifier();
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}
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error_code object::createBinary(MemoryBuffer *Source,
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OwningPtr<Binary> &Result) {
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OwningPtr<MemoryBuffer> scopedSource(Source);
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if (!Source)
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return make_error_code(errc::invalid_argument);
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sys::fs::file_magic type = sys::fs::identify_magic(Source->getBuffer());
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error_code ec;
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switch (type) {
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case sys::fs::file_magic::archive: {
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OwningPtr<Binary> ret(new Archive(scopedSource.take(), ec));
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if (ec) return ec;
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Result.swap(ret);
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return object_error::success;
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}
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case sys::fs::file_magic::elf_relocatable:
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case sys::fs::file_magic::elf_executable:
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case sys::fs::file_magic::elf_shared_object:
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case sys::fs::file_magic::elf_core: {
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OwningPtr<Binary> ret(
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ObjectFile::createELFObjectFile(scopedSource.take()));
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if (!ret)
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return object_error::invalid_file_type;
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Result.swap(ret);
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return object_error::success;
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}
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case sys::fs::file_magic::macho_object:
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case sys::fs::file_magic::macho_executable:
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case sys::fs::file_magic::macho_fixed_virtual_memory_shared_lib:
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case sys::fs::file_magic::macho_core:
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case sys::fs::file_magic::macho_preload_executable:
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case sys::fs::file_magic::macho_dynamically_linked_shared_lib:
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case sys::fs::file_magic::macho_dynamic_linker:
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case sys::fs::file_magic::macho_bundle:
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case sys::fs::file_magic::macho_dynamically_linked_shared_lib_stub:
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case sys::fs::file_magic::macho_dsym_companion: {
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OwningPtr<Binary> ret(
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ObjectFile::createMachOObjectFile(scopedSource.take()));
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if (!ret)
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return object_error::invalid_file_type;
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Result.swap(ret);
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return object_error::success;
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}
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case sys::fs::file_magic::macho_universal_binary: {
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OwningPtr<Binary> ret(new MachOUniversalBinary(scopedSource.take(), ec));
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if (ec) return ec;
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Result.swap(ret);
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return object_error::success;
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}
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case sys::fs::file_magic::coff_object:
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case sys::fs::file_magic::pecoff_executable: {
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OwningPtr<Binary> ret(
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ObjectFile::createCOFFObjectFile(scopedSource.take()));
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if (!ret)
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return object_error::invalid_file_type;
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Result.swap(ret);
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return object_error::success;
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}
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case sys::fs::file_magic::unknown:
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case sys::fs::file_magic::bitcode:
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case sys::fs::file_magic::windows_resource: {
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// Unrecognized object file format.
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return object_error::invalid_file_type;
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}
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}
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llvm_unreachable("Unexpected Binary File Type");
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}
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error_code object::createBinary(StringRef Path, OwningPtr<Binary> &Result) {
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OwningPtr<MemoryBuffer> File;
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if (error_code ec = MemoryBuffer::getFileOrSTDIN(Path, File))
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return ec;
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return createBinary(File.take(), Result);
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}
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