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//===-- llvm-dis.cpp - The low-level LLVM disassembler --------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This utility may be invoked in the following manner:
// llvm-dis [options] - Read LLVM bytecode from stdin, write asm to stdout
// llvm-dis [options] x.bc - Read LLVM bytecode from the x.bc file, write asm
// to the x.ll file.
// Options:
// --help - Output information about command line switches
// -c - Print C code instead of LLVM assembly
//
//===----------------------------------------------------------------------===//
#include "llvm/Bytecode/Analyzer.h"
#include "Support/CommandLine.h"
#include "llvm/System/Signals.h"
#include <fstream>
#include <iostream>
using namespace llvm;
static cl::opt<std::string>
InputFilename(cl::Positional, cl::desc("<input bytecode>"), 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"));
static cl::opt<bool> Detailed ("d", cl::desc("Detailed output"));
int
main(int argc, char **argv)
{
cl::ParseCommandLineOptions(argc, argv,
" llvm-abcd Analysis of ByteCode Dumper\n");
PrintStackTraceOnErrorSignal();
std::ostream* Out = &std::cout; // Default to printing to stdout...
std::istream* In = &std::cin; // Default to reading stdin
std::string ErrorMessage;
BytecodeAnalysis bca;
/// Analyze the bytecode file
AnalyzeBytecodeFile(InputFilename, bca, &ErrorMessage);
// If there was an error, print it and stop.
if ( ErrorMessage.size() ) {
std::cerr << argv[0] << ": " << ErrorMessage << "\n";
return 1;
}
// Figure out where the output is going
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! Sending to standard output.\n";
} else {
Out = new std::ofstream(OutputFilename.c_str());
}
}
} else {
if (InputFilename == "-") {
OutputFilename = "-";
} else {
std::string IFN = InputFilename;
int Len = IFN.length();
if (IFN[Len-3] == '.' && IFN[Len-2] == 'b' && IFN[Len-1] == 'c') {
// Source ends in .bc
OutputFilename = std::string(IFN.begin(), IFN.end()-3)+".abc";
} else {
OutputFilename = IFN+".abc";
}
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! Sending to standard output.\n";
} else {
Out = new std::ofstream(OutputFilename.c_str());
// Make sure that the Out file gets unlinked from the disk if we get a
// SIGINT
RemoveFileOnSignal(OutputFilename);
}
}
}
if (!Out->good()) {
std::cerr << argv[0] << ": error opening " << OutputFilename
<< ": sending to stdout instead!\n";
Out = &std::cout;
}
// All that abcd does is write the gathered statistics to the output
bca.dumpBytecode = true;
PrintBytecodeAnalysis(bca,*Out);
if (Out != &std::cout) {
((std::ofstream*)Out)->close();
delete Out;
}
return 0;
}
// vim: sw=2
|
