llvm-mirror/tools/obj2yaml/obj2yaml.cpp
Rui Ueyama 04fb9911c5 Define InitLLVM to do common initialization all at once.
We have a few functions that virtually all command wants to run on
process startup/shutdown. This patch adds InitLLVM class to do that
all at once, so that we don't need to copy-n-paste boilerplate code
to each llvm command's main() function.

Differential Revision: https://reviews.llvm.org/D45602

llvm-svn: 330046
2018-04-13 18:26:06 +00:00

73 lines
2.2 KiB
C++

//===------ utils/obj2yaml.cpp - obj2yaml conversion tool -------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "obj2yaml.h"
#include "Error.h"
#include "llvm/Object/Archive.h"
#include "llvm/Object/COFF.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/InitLLVM.h"
using namespace llvm;
using namespace llvm::object;
static std::error_code dumpObject(const ObjectFile &Obj) {
if (Obj.isCOFF())
return coff2yaml(outs(), cast<COFFObjectFile>(Obj));
if (Obj.isELF())
return elf2yaml(outs(), Obj);
if (Obj.isWasm())
return wasm2yaml(outs(), cast<WasmObjectFile>(Obj));
return obj2yaml_error::unsupported_obj_file_format;
}
static Error dumpInput(StringRef File) {
Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(File);
if (!BinaryOrErr)
return BinaryOrErr.takeError();
Binary &Binary = *BinaryOrErr.get().getBinary();
// Universal MachO is not a subclass of ObjectFile, so it needs to be handled
// here with the other binary types.
if (Binary.isMachO() || Binary.isMachOUniversalBinary())
return errorCodeToError(macho2yaml(outs(), Binary));
// TODO: If this is an archive, then burst it and dump each entry
if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary))
return errorCodeToError(dumpObject(*Obj));
return Error::success();
}
static void reportError(StringRef Input, Error Err) {
if (Input == "-")
Input = "<stdin>";
std::string ErrMsg;
raw_string_ostream OS(ErrMsg);
logAllUnhandledErrors(std::move(Err), OS, "");
OS.flush();
errs() << "Error reading file: " << Input << ": " << ErrMsg;
errs().flush();
}
cl::opt<std::string> InputFilename(cl::Positional, cl::desc("<input file>"),
cl::init("-"));
int main(int argc, char *argv[]) {
InitLLVM X(argc, argv);
cl::ParseCommandLineOptions(argc, argv);
if (Error Err = dumpInput(InputFilename)) {
reportError(InputFilename, std::move(Err));
return 1;
}
return 0;
}