mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 20:23:11 +01:00
116 lines
3.8 KiB
C++
116 lines
3.8 KiB
C++
//===--- llvm2cpp.cpp - LLVM IR to C++ Translator -------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by Reid Spencer and is distributed under the
|
|
// University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This program converts an input LLVM assembly file (.ll) into a C++ source
|
|
// file that makes calls to the LLVM C++ API to produce the same module. The
|
|
// generated program verifies what it built and then runs the PrintAssemblyPass
|
|
// to reproduce the input originally given to llvm2cpp.
|
|
//
|
|
// Use the --help option for help with command line options.
|
|
//
|
|
//===------------------------------------------------------------------------===
|
|
|
|
#include "llvm/Module.h"
|
|
#include "llvm/Bytecode/Reader.h"
|
|
#include "llvm/Analysis/Verifier.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Support/SystemUtils.h"
|
|
#include "llvm/System/Signals.h"
|
|
#include "CppWriter.h"
|
|
#include <fstream>
|
|
#include <iostream>
|
|
#include <memory>
|
|
|
|
using namespace llvm;
|
|
|
|
static cl::opt<std::string>
|
|
InputFilename(cl::Positional, cl::desc("<input LLVM bytecode file>"),
|
|
cl::init("-"));
|
|
|
|
static cl::opt<std::string>
|
|
OutputFilename("o", cl::desc("Override output filename"),
|
|
cl::value_desc("filename"));
|
|
|
|
static cl::opt<bool>
|
|
Force("f", cl::desc("Overwrite output files"));
|
|
|
|
int main(int argc, char **argv) {
|
|
cl::ParseCommandLineOptions(argc, argv, " llvm .ll -> .cpp assembler\n");
|
|
sys::PrintStackTraceOnErrorSignal();
|
|
|
|
int exitCode = 0;
|
|
std::ostream *Out = 0;
|
|
std::string ErrorMessage;
|
|
std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename, &ErrorMessage));
|
|
if (M.get() == 0) {
|
|
std::cerr << argv[0] << ": ";
|
|
if (ErrorMessage.size())
|
|
std::cerr << ErrorMessage << "\n";
|
|
else
|
|
std::cerr << "bytecode didn't read correctly.\n";
|
|
return 1;
|
|
}
|
|
|
|
if (OutputFilename != "") { // Specified an output filename?
|
|
if (OutputFilename != "-") { // Not stdout?
|
|
if (!Force && std::ifstream(OutputFilename.c_str())) {
|
|
// If force is not specified, make sure not to overwrite a file!
|
|
std::cerr << argv[0] << ": error opening '" << OutputFilename
|
|
<< "': file exists!\n"
|
|
<< "Use -f command line argument to force output\n";
|
|
return 1;
|
|
}
|
|
Out = new std::ofstream(OutputFilename.c_str(), std::ios::out |
|
|
std::ios::trunc | std::ios::binary);
|
|
} else { // Specified stdout
|
|
Out = &std::cout;
|
|
}
|
|
} else {
|
|
if (InputFilename == "-") {
|
|
OutputFilename = "-";
|
|
Out = &std::cout;
|
|
} else {
|
|
std::string IFN = InputFilename;
|
|
int Len = IFN.length();
|
|
if (IFN[Len-3] == '.' && IFN[Len-2] == 'l' && IFN[Len-1] == 'l') {
|
|
// Source ends in .ll
|
|
OutputFilename = std::string(IFN.begin(), IFN.end()-3);
|
|
} else {
|
|
OutputFilename = IFN; // Append a .cpp to it
|
|
}
|
|
OutputFilename += ".cpp";
|
|
|
|
if (!Force && std::ifstream(OutputFilename.c_str())) {
|
|
// If force is not specified, make sure not to overwrite a file!
|
|
std::cerr << argv[0] << ": error opening '" << OutputFilename
|
|
<< "': file exists!\n"
|
|
<< "Use -f command line argument to force output\n";
|
|
return 1;
|
|
}
|
|
|
|
Out = new std::ofstream(OutputFilename.c_str(), std::ios::out |
|
|
std::ios::trunc | std::ios::binary);
|
|
// Make sure that the Out file gets unlinked from the disk if we get a
|
|
// SIGINT
|
|
sys::RemoveFileOnSignal(sys::Path(OutputFilename));
|
|
}
|
|
}
|
|
|
|
if (!Out->good()) {
|
|
std::cerr << argv[0] << ": error opening " << OutputFilename << "!\n";
|
|
return 1;
|
|
}
|
|
|
|
WriteModuleToCppFile(M.get(), *Out);
|
|
|
|
if (Out != &std::cout) delete Out;
|
|
return exitCode;
|
|
}
|
|
|