xref: /gem5/util/statetrace/base/statetrace.cc

/*
 * Copyright (c) 2006-2007 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 <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>
#include <errno.h>

#include "printer.hh"
#include "tracechild.hh"

using namespace std;

void printUsage(const char * execName)
{
        cout << execName << " -h | -r -- <command> <arguments>" << endl;
}

int main(int argc, char * argv[], char * envp[])
{
        TraceChild * child = genTraceChild();
        string args;
        int startProgramArgs;

        //Parse the command line arguments
        bool printInitial = false;
        bool printTrace = true;
        for(int x = 1; x < argc; x++)
        {
                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;
                }
        }
        if(!child->startTracing(argv[startProgramArgs],
                    argv + startProgramArgs))
        {
                cerr << "Couldn't start target program" << endl;
                return 1;
        }
        if(printInitial)
        {
            child->outputStartState(cout);
        }
        if(printTrace)
        {
            // Connect to m5
            bool portSet = false;
            int port;
            int sock = socket(AF_INET, SOCK_STREAM, 0);
            if(sock < 0)
            {
                cerr << "Error opening socket! " << strerror(errno) << endl;
                return 1;
            }
            struct hostent *server;
            server = gethostbyname("zower.eecs.umich.edu");
            if(!server)
            {
                cerr << "Couldn't get host ip! " << strerror(errno) << endl;
                return 1;
            }
            struct sockaddr_in serv_addr;
            bzero((char *)&serv_addr, sizeof(serv_addr));
            serv_addr.sin_family = AF_INET;
            bcopy((char *)server->h_addr,
                    (char *)&serv_addr.sin_addr.s_addr,
                    server->h_length);
            serv_addr.sin_port = htons(8000);
            if(connect(sock, (sockaddr *)&serv_addr, sizeof(serv_addr)) < 0)
            {
                cerr << "Couldn't connect to server! " << strerror(errno) << endl;
                return 1;
            }
            child->step();
            while(child->isTracing())
            {
                    if(!child->sendState(sock))
                        break;
                    child->step();
            }
        }
        if(!child->stopTracing())
        {
                cerr << "Couldn't stop child" << endl;
                return 1;
        }
        return 0;
}