llvm-6502/lib/Object/ObjectFile.cpp
Rafael Espindola 0d50598d71 Pass a unique_ptr<MemoryBuffer> to the constructors in the Binary hierarchy.
Once the objects are constructed, they own the buffer. Passing a unique_ptr
makes that clear.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211595 91177308-0d34-0410-b5e6-96231b3b80d8
2014-06-24 13:56:32 +00:00

91 lines
3.2 KiB
C++

//===- ObjectFile.cpp - File format independent object 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 a file format independent ObjectFile class.
//
//===----------------------------------------------------------------------===//
#include "llvm/Object/ObjectFile.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/raw_ostream.h"
#include <system_error>
using namespace llvm;
using namespace object;
void ObjectFile::anchor() { }
ObjectFile::ObjectFile(unsigned int Type, std::unique_ptr<MemoryBuffer> Source)
: SymbolicFile(Type, std::move(Source)) {}
std::error_code ObjectFile::printSymbolName(raw_ostream &OS,
DataRefImpl Symb) const {
StringRef Name;
if (std::error_code EC = getSymbolName(Symb, Name))
return EC;
OS << Name;
return object_error::success;
}
std::error_code ObjectFile::getSymbolAlignment(DataRefImpl DRI,
uint32_t &Result) const {
Result = 0;
return object_error::success;
}
section_iterator ObjectFile::getRelocatedSection(DataRefImpl Sec) const {
return section_iterator(SectionRef(Sec, this));
}
ErrorOr<ObjectFile *>
ObjectFile::createObjectFile(std::unique_ptr<MemoryBuffer> &Object,
sys::fs::file_magic Type) {
if (Type == sys::fs::file_magic::unknown)
Type = sys::fs::identify_magic(Object->getBuffer());
switch (Type) {
case sys::fs::file_magic::unknown:
case sys::fs::file_magic::bitcode:
case sys::fs::file_magic::archive:
case sys::fs::file_magic::macho_universal_binary:
case sys::fs::file_magic::windows_resource:
return object_error::invalid_file_type;
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 createELFObjectFile(Object);
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 createMachOObjectFile(Object);
case sys::fs::file_magic::coff_object:
case sys::fs::file_magic::coff_import_library:
case sys::fs::file_magic::pecoff_executable:
return createCOFFObjectFile(std::move(Object));
}
llvm_unreachable("Unexpected Object File Type");
}
ErrorOr<ObjectFile *> ObjectFile::createObjectFile(StringRef ObjectPath) {
std::unique_ptr<MemoryBuffer> File;
if (std::error_code EC = MemoryBuffer::getFile(ObjectPath, File))
return EC;
return createObjectFile(File);
}