2fe96439fb
This change adds boilerplate code to implement the object::ObjectFile interface for the DXContainer object file and an empty implementation of the objdump Dumper object. Adding an ObjectFile implementation for DXContainer is a bit odd because the DXContainer format doesn't have a symbol table, so there isn't a reasonable implementation for the SymbolicFile interfaces. That said, it does have sections, and it will be useful for objdump to be able to inspect some of the structured data stored in some of the special named sections. At this point in the implementation it can't do much other than dump the part names, offsets, and sizes. Dumping detailed structured section contents to be extended in subsequent PRs. Fixes #151433
133 lines
4.4 KiB
C++
133 lines
4.4 KiB
C++
//===- SymbolicFile.cpp - Interface that only provides symbols ------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines a file format independent SymbolicFile class.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Object/SymbolicFile.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/BinaryFormat/Magic.h"
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#include "llvm/Object/COFFImportFile.h"
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#include "llvm/Object/Error.h"
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#include "llvm/Object/IRObjectFile.h"
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#include "llvm/Object/ObjectFile.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/ErrorHandling.h"
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#include <memory>
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using namespace llvm;
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using namespace object;
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namespace llvm {
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class LLVMContext;
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}
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SymbolicFile::SymbolicFile(unsigned int Type, MemoryBufferRef Source)
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: Binary(Type, Source) {}
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SymbolicFile::~SymbolicFile() = default;
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Expected<std::unique_ptr<SymbolicFile>>
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SymbolicFile::createSymbolicFile(MemoryBufferRef Object, file_magic Type,
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LLVMContext *Context, bool InitContent) {
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StringRef Data = Object.getBuffer();
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if (Type == file_magic::unknown)
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Type = identify_magic(Data);
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if (!isSymbolicFile(Type, Context))
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return errorCodeToError(object_error::invalid_file_type);
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switch (Type) {
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case file_magic::bitcode:
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// Context is guaranteed to be non-null here, because bitcode magic only
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// indicates a symbolic file when Context is non-null.
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return IRObjectFile::create(Object, *Context);
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case file_magic::elf:
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case file_magic::elf_executable:
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case file_magic::elf_shared_object:
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case file_magic::elf_core:
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case file_magic::goff_object:
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case file_magic::macho_executable:
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case file_magic::macho_fixed_virtual_memory_shared_lib:
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case file_magic::macho_core:
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case file_magic::macho_preload_executable:
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case file_magic::macho_dynamically_linked_shared_lib:
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case file_magic::macho_dynamic_linker:
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case file_magic::macho_bundle:
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case file_magic::macho_dynamically_linked_shared_lib_stub:
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case file_magic::macho_dsym_companion:
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case file_magic::macho_kext_bundle:
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case file_magic::macho_file_set:
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case file_magic::pecoff_executable:
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case file_magic::xcoff_object_32:
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case file_magic::xcoff_object_64:
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case file_magic::wasm_object:
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case file_magic::dxcontainer_object:
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return ObjectFile::createObjectFile(Object, Type, InitContent);
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case file_magic::coff_import_library:
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return std::unique_ptr<SymbolicFile>(new COFFImportFile(Object));
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case file_magic::elf_relocatable:
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case file_magic::macho_object:
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case file_magic::coff_object: {
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Expected<std::unique_ptr<ObjectFile>> Obj =
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ObjectFile::createObjectFile(Object, Type, InitContent);
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if (!Obj || !Context)
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return std::move(Obj);
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Expected<MemoryBufferRef> BCData =
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IRObjectFile::findBitcodeInObject(*Obj->get());
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if (!BCData) {
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consumeError(BCData.takeError());
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return std::move(Obj);
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}
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return IRObjectFile::create(
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MemoryBufferRef(BCData->getBuffer(), Object.getBufferIdentifier()),
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*Context);
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}
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default:
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llvm_unreachable("Unexpected Binary File Type");
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}
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}
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bool SymbolicFile::isSymbolicFile(file_magic Type, const LLVMContext *Context) {
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switch (Type) {
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case file_magic::bitcode:
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return Context != nullptr;
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case file_magic::elf:
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case file_magic::elf_executable:
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case file_magic::elf_shared_object:
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case file_magic::elf_core:
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case file_magic::goff_object:
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case file_magic::macho_executable:
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case file_magic::macho_fixed_virtual_memory_shared_lib:
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case file_magic::macho_core:
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case file_magic::macho_preload_executable:
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case file_magic::macho_dynamically_linked_shared_lib:
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case file_magic::macho_dynamic_linker:
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case file_magic::macho_bundle:
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case file_magic::macho_dynamically_linked_shared_lib_stub:
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case file_magic::macho_dsym_companion:
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case file_magic::macho_kext_bundle:
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case file_magic::macho_file_set:
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case file_magic::pecoff_executable:
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case file_magic::xcoff_object_32:
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case file_magic::xcoff_object_64:
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case file_magic::wasm_object:
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case file_magic::coff_import_library:
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case file_magic::elf_relocatable:
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case file_magic::macho_object:
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case file_magic::coff_object:
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case file_magic::dxcontainer_object:
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return true;
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default:
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return false;
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}
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}
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