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/*
* Copyright (c) 2006 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Gabe Black
*/
#include <iostream>
#include <fstream>
#include <string>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/ptrace.h>
#include <unistd.h>
#include "tracechild.hh"
#include "printer.hh"
using namespace std;
void printUsage(const char * execName)
{
cout << execName << " -f <output format file> | -h | -r -- <command> <arguments>" << endl;
}
int main(int argc, char * argv[], char * envp[])
{
TraceChild * child = genTraceChild();
NestingPrinter printer(child);
string args;
int startProgramArgs;
//Parse the command line arguments
bool formatStringSet = false;
bool printInitial = false;
bool printTrace = true;
string format;
for(int x = 1; x < argc; x++)
{
if(!strcmp(argv[x], "-f"))
{
if(formatStringSet)
{
cerr << "Attempted to set format twice!"
<< endl;
printUsage(argv[0]);
return 1;
}
formatStringSet = true;
x++;
if(x >= argc)
{
cerr << "Incorrect usage.\n" << endl;
printUsage(argv[0]);
return 1;
}
ifstream formatFile(argv[x]);
if(!formatFile)
{
cerr << "Problem opening file "
<< argv[x] << "." << endl;
return 1;
}
format = "";
while(formatFile)
{
string line;
getline(formatFile, line);
if(formatFile.eof())
{
format += line;
break;
}
if(!formatFile)
{
cerr << "Problem reading from file "
<< argv[x] << "." << endl;
return 1;
}
format += line + '\n';
}
}
else if(!strcmp(argv[x], "-h"))
{
printUsage(argv[0]);
return 0;
}
else if(!strcmp(argv[x], "-r"))
{
cout << "Legal register names:" << endl;
int numRegs = child->getNumRegs();
for(unsigned int x = 0; x < numRegs; x++)
{
cout << "\t" << child->getRegName(x) << endl;
}
return 0;
}
else if(!strcmp(argv[x], "-i"))
{
printInitial = true;
}
else if(!strcmp(argv[x], "-nt"))
{
printTrace = false;
}
else if(!strcmp(argv[x], "--"))
{
x++;
if(x >= argc)
{
cerr << "Incorrect usage.\n" << endl;
printUsage(argv[0]);
return 1;
}
startProgramArgs = x;
break;
}
else
{
cerr << "Incorrect usage.\n" << endl;
printUsage(argv[0]);
return 1;
}
}
for(unsigned int x = startProgramArgs; x < argc; x++)
args += argv[x];
if(!child->startTracing(argv[startProgramArgs], args.c_str()))
{
cerr << "Couldn't start target program" << endl;
return 1;
}
if(printInitial)
{
child->outputStartState(cout);
}
if(printTrace)
{
if(!formatStringSet)
{
cerr << "No output format set!" << endl;
child->stopTracing();
printUsage(argv[0]);
return 1;
}
if(!printer.configure(format))
{
cerr << "Problem in the output format" << endl;
child->stopTracing();
return 1;
}
child->step();
while(child->isTracing())
{
cout << printer;
child->step();
}
cout << printer;
}
if(!child->stopTracing())
{
cerr << "Couldn't stop child" << endl;
return 1;
}
return 0;
}
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