mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 20:23:11 +01:00
77 lines
2.6 KiB
C++
77 lines
2.6 KiB
C++
//===-- llvm-modextract.cpp - LLVM module extractor utility ---------------===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This program is for testing features that rely on multi-module bitcode files.
|
|
// It takes a multi-module bitcode file, extracts one of the modules and writes
|
|
// it to the output file.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Bitcode/BitcodeReader.h"
|
|
#include "llvm/Bitcode/BitcodeWriter.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Support/Error.h"
|
|
#include "llvm/Support/FileSystem.h"
|
|
#include "llvm/Support/ToolOutputFile.h"
|
|
|
|
using namespace llvm;
|
|
|
|
static cl::opt<bool>
|
|
BinaryExtract("b", cl::desc("Whether to perform binary extraction"));
|
|
|
|
static cl::opt<std::string> OutputFilename("o", cl::Required,
|
|
cl::desc("Output filename"),
|
|
cl::value_desc("filename"));
|
|
|
|
static cl::opt<std::string>
|
|
InputFilename(cl::Positional, cl::desc("<input bitcode>"), cl::init("-"));
|
|
|
|
static cl::opt<unsigned> ModuleIndex("n", cl::Required,
|
|
cl::desc("Index of module to extract"),
|
|
cl::value_desc("index"));
|
|
|
|
int main(int argc, char **argv) {
|
|
cl::ParseCommandLineOptions(argc, argv, "Module extractor");
|
|
|
|
ExitOnError ExitOnErr("llvm-modextract: error: ");
|
|
|
|
std::unique_ptr<MemoryBuffer> MB =
|
|
ExitOnErr(errorOrToExpected(MemoryBuffer::getFileOrSTDIN(InputFilename)));
|
|
std::vector<BitcodeModule> Ms = ExitOnErr(getBitcodeModuleList(*MB));
|
|
|
|
LLVMContext Context;
|
|
if (ModuleIndex >= Ms.size()) {
|
|
errs() << "llvm-modextract: error: module index out of range; bitcode file "
|
|
"contains "
|
|
<< Ms.size() << " module(s)\n";
|
|
return 1;
|
|
}
|
|
|
|
std::error_code EC;
|
|
std::unique_ptr<ToolOutputFile> Out(
|
|
new ToolOutputFile(OutputFilename, EC, sys::fs::OF_None));
|
|
ExitOnErr(errorCodeToError(EC));
|
|
|
|
if (BinaryExtract) {
|
|
SmallVector<char, 0> Result;
|
|
BitcodeWriter Writer(Result);
|
|
Result.append(Ms[ModuleIndex].getBuffer().begin(),
|
|
Ms[ModuleIndex].getBuffer().end());
|
|
Writer.copyStrtab(Ms[ModuleIndex].getStrtab());
|
|
Out->os() << Result;
|
|
Out->keep();
|
|
return 0;
|
|
}
|
|
|
|
std::unique_ptr<Module> M = ExitOnErr(Ms[ModuleIndex].parseModule(Context));
|
|
WriteBitcodeToFile(*M, Out->os());
|
|
|
|
Out->keep();
|
|
return 0;
|
|
}
|