mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2025-04-05 01:01:45 +00:00
9d9569b657
The constructors of classes deriving from Binary normally take an error_code as an argument to the constructor. My original intent was to change them to have a trivial constructor and move the initial parsing logic to a static method returning an ErrorOr. I changed my mind because: * A constructor with an error_code out parameter is extremely convenient from the implementation side. We can incrementally construct the object and give up when we find an error. * It is very efficient when constructing on the stack or when there is no error. The only inefficient case is where heap allocating and an error is found (we have to free the memory). The result is that this is a much smaller patch. It just standardizes the create* helpers to return an ErrorOr. Almost no functionality change: The only difference is that this found that we were trying to read past the end of COFF import library but ignoring the error. llvm-svn: 199770
88 lines
3.0 KiB
C++
88 lines
3.0 KiB
C++
//===- Binary.cpp - A generic binary file -----------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines the Binary class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Object/Binary.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/Support/FileSystem.h"
|
|
#include "llvm/Support/MemoryBuffer.h"
|
|
#include "llvm/Support/Path.h"
|
|
|
|
// Include headers for createBinary.
|
|
#include "llvm/Object/Archive.h"
|
|
#include "llvm/Object/MachOUniversal.h"
|
|
#include "llvm/Object/ObjectFile.h"
|
|
|
|
using namespace llvm;
|
|
using namespace object;
|
|
|
|
Binary::~Binary() {
|
|
delete Data;
|
|
}
|
|
|
|
Binary::Binary(unsigned int Type, MemoryBuffer *Source)
|
|
: TypeID(Type)
|
|
, Data(Source) {}
|
|
|
|
StringRef Binary::getData() const {
|
|
return Data->getBuffer();
|
|
}
|
|
|
|
StringRef Binary::getFileName() const {
|
|
return Data->getBufferIdentifier();
|
|
}
|
|
|
|
ErrorOr<Binary *> object::createBinary(MemoryBuffer *Source) {
|
|
OwningPtr<MemoryBuffer> scopedSource(Source);
|
|
sys::fs::file_magic type = sys::fs::identify_magic(Source->getBuffer());
|
|
switch (type) {
|
|
case sys::fs::file_magic::archive:
|
|
return Archive::create(scopedSource.take());
|
|
case sys::fs::file_magic::elf_relocatable:
|
|
case sys::fs::file_magic::elf_executable:
|
|
case sys::fs::file_magic::elf_shared_object:
|
|
case sys::fs::file_magic::elf_core:
|
|
return ObjectFile::createELFObjectFile(scopedSource.take());
|
|
case sys::fs::file_magic::macho_object:
|
|
case sys::fs::file_magic::macho_executable:
|
|
case sys::fs::file_magic::macho_fixed_virtual_memory_shared_lib:
|
|
case sys::fs::file_magic::macho_core:
|
|
case sys::fs::file_magic::macho_preload_executable:
|
|
case sys::fs::file_magic::macho_dynamically_linked_shared_lib:
|
|
case sys::fs::file_magic::macho_dynamic_linker:
|
|
case sys::fs::file_magic::macho_bundle:
|
|
case sys::fs::file_magic::macho_dynamically_linked_shared_lib_stub:
|
|
case sys::fs::file_magic::macho_dsym_companion:
|
|
return ObjectFile::createMachOObjectFile(scopedSource.take());
|
|
case sys::fs::file_magic::macho_universal_binary:
|
|
return MachOUniversalBinary::create(scopedSource.take());
|
|
case sys::fs::file_magic::coff_object:
|
|
case sys::fs::file_magic::coff_import_library:
|
|
case sys::fs::file_magic::pecoff_executable:
|
|
return ObjectFile::createCOFFObjectFile(scopedSource.take());
|
|
case sys::fs::file_magic::unknown:
|
|
case sys::fs::file_magic::bitcode:
|
|
case sys::fs::file_magic::windows_resource: {
|
|
// Unrecognized object file format.
|
|
return object_error::invalid_file_type;
|
|
}
|
|
}
|
|
llvm_unreachable("Unexpected Binary File Type");
|
|
}
|
|
|
|
ErrorOr<Binary *> object::createBinary(StringRef Path) {
|
|
OwningPtr<MemoryBuffer> File;
|
|
if (error_code EC = MemoryBuffer::getFileOrSTDIN(Path, File))
|
|
return EC;
|
|
return createBinary(File.take());
|
|
}
|