util/statetrace/statetrace.cc

   1 /*
   2  * Copyright (c) 2006-2007 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Gabe Black
  29  */
  30
  31 #include <cstring>
  32 #include <errno.h>
  33 #include <fstream>
  34 #include <iostream>
  35 #include <netdb.h>
  36 #include <netinet/in.h>
  37 #include <stdio.h>
  38 #include <string>
  39 #include <sys/ptrace.h>
  40 #include <sys/socket.h>
  41 #include <sys/types.h>
  42 #include <sys/wait.h>
  43 #include <unistd.h>
  44
  45 #include "printer.hh"
  46 #include "tracechild.hh"
  47
  48 using namespace std;
  49
  50 void printUsage(const char * execName)
  51 {
  52     cout << execName << " -h | -r -- <command> <arguments>" << endl;
  53 }
  54
  55 int main(int argc, char * argv[], char * envp[])
  56 {
  57     TraceChild * child = genTraceChild();
  58     string args;
  59     int startProgramArgs;
  60
  61     //Parse the command line arguments
  62     bool printInitial = false;
  63     bool printTrace = true;
  64     string host = "localhost";
  65     for(int x = 1; x < argc; x++)
  66     {
  67         if(!strcmp(argv[x], "-h"))
  68         {
  69             printUsage(argv[0]);
  70             return 0;
  71         }
  72         if(!strcmp(argv[x], "--host"))
  73         {
  74             x++;
  75             if(x >= argc)
  76             {
  77                 cerr << "Incorrect usage.\n" << endl;
  78                 printUsage(argv[0]);
  79                 return 1;
  80             }
  81             host = argv[x];
  82         }
  83         else if(!strcmp(argv[x], "-r"))
  84         {
  85             cout << "Legal register names:" << endl;
  86             int numRegs = child->getNumRegs();
  87             for(unsigned int x = 0; x < numRegs; x++)
  88             {
  89                 cout << "\t" << child->getRegName(x) << endl;
  90             }
  91             return 0;
  92         }
  93         else if(!strcmp(argv[x], "-i"))
  94         {
  95             printInitial = true;
  96         }
  97         else if(!strcmp(argv[x], "-nt"))
  98         {
  99             printTrace = false;
 100         }
 101         else if(!strcmp(argv[x], "--"))
 102         {
 103             x++;
 104             if(x >= argc)
 105             {
 106                 cerr << "Incorrect usage.\n" << endl;
 107                 printUsage(argv[0]);
 108                 return 1;
 109             }
 110             startProgramArgs = x;
 111             break;
 112         }
 113         else
 114         {
 115             cerr << "Incorrect usage.\n" << endl;
 116             printUsage(argv[0]);
 117             return 1;
 118         }
 119     }
 120     if(!child->startTracing(argv[startProgramArgs],
 121                 argv + startProgramArgs))
 122     {
 123         cerr << "Couldn't start target program" << endl;
 124         return 1;
 125     }
 126     child->step();
 127     if(printInitial)
 128     {
 129         child->outputStartState(cout);
 130     }
 131     if(printTrace)
 132     {
 133         // Connect to m5
 134         bool portSet = false;
 135         int port;
 136         int sock = socket(AF_INET, SOCK_STREAM, 0);
 137         if(sock < 0)
 138         {
 139             cerr << "Error opening socket! " << strerror(errno) << endl;
 140             return 1;
 141         }
 142         struct hostent *server;
 143         server = gethostbyname(host.c_str());
 144         if(!server)
 145         {
 146             cerr << "Couldn't get host ip! " << strerror(errno) << endl;
 147             return 1;
 148         }
 149         struct sockaddr_in serv_addr;
 150         bzero((char *)&serv_addr, sizeof(serv_addr));
 151         serv_addr.sin_family = AF_INET;
 152         bcopy((char *)server->h_addr,
 153                 (char *)&serv_addr.sin_addr.s_addr,
 154                 server->h_length);
 155         serv_addr.sin_port = htons(8000);
 156         if(connect(sock, (sockaddr *)&serv_addr, sizeof(serv_addr)) < 0)
 157         {
 158             cerr << "Couldn't connect to server! " << strerror(errno) << endl;
 159             return 1;
 160         }
 161         while(child->isTracing())
 162         {
 163                 if(!child->sendState(sock))
 164                     break;
 165                 child->step();
 166         }
 167     }
 168     if(!child->stopTracing())
 169     {
 170             cerr << "Couldn't stop child" << endl;
 171             return 1;
 172     }
 173     return 0;
 174 }
 175