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llvm-mirror/tools/llvm-readobj/llvm-readobj.h
Fangrui Song 601cf9f2c4 [llvm-readobj] Switch command line parsing from llvm::cl to OptTable
Users should generally observe no difference as long as they don't use
unintended option forms. Behavior changes:

* `-t=d` is removed. Use `-t d` instead.
* `--demangle=false` and `--demangle=0` cannot be used. Omit the option or use `--no-demangle`. Other flag-style options don't have `--no-` forms.
* `--help-list` is removed. This is a `cl::` specific option.
* llvm-readobj now supports grouped short options as well.
* `--color` is removed. This is generally not useful (only apply to errors/warnings) but was inherited from Support.

Some adjustment to the canonical forms
(usually from GNU readelf; currently llvm-readobj has too many redundant aliases):

* --dyn-syms is canonical. --dyn-symbols is a hidden alias
* --file-header is canonical. --file-headers is a hidden alias
* --histogram is canonical. --elf-hash-histogram is a hidden alias
* --relocs is canonical. --relocations is a hidden alias
* --section-groups is canonical. --elf-section-groups is a hidden alias

OptTable avoids global option collision if we decide to support multiplexing for binary utilities.

* Most one-dash long options are still supported. `-dt, -sd, -st, -sr` are dropped due to their conflict with grouped short options.
* `--section-mapping=false` (D57365) is strange but is kept for now.
* Many `cl::opt` variables were unnecessarily external. I added `static` whenever appropriate.

Reviewed By: jhenderson

Differential Revision: https://reviews.llvm.org/D105532
2021-07-12 10:14:42 -07:00

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//===-- llvm-readobj.h ----------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TOOLS_LLVM_READOBJ_LLVM_READOBJ_H
#define LLVM_TOOLS_LLVM_READOBJ_LLVM_READOBJ_H
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/ErrorOr.h"
#include "llvm/Support/Error.h"
#include <string>
namespace llvm {
namespace object {
class RelocationRef;
}
// Various helper functions.
LLVM_ATTRIBUTE_NORETURN void reportError(Error Err, StringRef Input);
void reportWarning(Error Err, StringRef Input);
template <class T> T unwrapOrError(StringRef Input, Expected<T> EO) {
if (EO)
return *EO;
reportError(EO.takeError(), Input);
}
} // namespace llvm
namespace opts {
extern bool SectionRelocations;
extern bool SectionSymbols;
extern bool SectionData;
extern bool ExpandRelocs;
extern bool RawRelr;
extern bool CodeViewSubsectionBytes;
extern bool Demangle;
enum OutputStyleTy { LLVM, GNU };
extern OutputStyleTy Output;
} // namespace opts
#define LLVM_READOBJ_ENUM_ENT(ns, enum) \
{ #enum, ns::enum }
#define LLVM_READOBJ_ENUM_CLASS_ENT(enum_class, enum) \
{ #enum, std::underlying_type<enum_class>::type(enum_class::enum) }
#endif