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 <iostream>
  32 #include <fstream>
  33 #include <string>
  34 #include <sys/types.h>
  35 #include <sys/wait.h>
  36 #include <sys/ptrace.h>
  37 #include <unistd.h>
  38 #include <stdio.h>
  39 #include <sys/types.h>
  40 #include <sys/socket.h>
  41 #include <netinet/in.h>
  42 #include <netdb.h>
  43 #include <errno.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         for(int x = 1; x < argc; x++)
  65         {
  66                 if(!strcmp(argv[x], "-h"))
  67                 {
  68                         printUsage(argv[0]);
  69                         return 0;
  70                 }
  71                 else if(!strcmp(argv[x], "-r"))
  72                 {
  73                     cout << "Legal register names:" << endl;
  74                     int numRegs = child->getNumRegs();
  75                     for(unsigned int x = 0; x < numRegs; x++)
  76                     {
  77                             cout << "\t" << child->getRegName(x) << endl;
  78                     }
  79                     return 0;
  80                 }
  81                 else if(!strcmp(argv[x], "-i"))
  82                 {
  83                     printInitial = true;
  84                 }
  85                 else if(!strcmp(argv[x], "-nt"))
  86                 {
  87                     printTrace = false;
  88                 }
  89                 else if(!strcmp(argv[x], "--"))
  90                 {
  91                         x++;
  92                         if(x >= argc)
  93                         {
  94                                 cerr << "Incorrect usage.\n" << endl;
  95                                 printUsage(argv[0]);
  96                                 return 1;
  97                         }
  98                         startProgramArgs = x;
  99                         break;
 100                 }
 101                 else
 102                 {
 103                         cerr << "Incorrect usage.\n" << endl;
 104                         printUsage(argv[0]);
 105                         return 1;
 106                 }
 107         }
 108         if(!child->startTracing(argv[startProgramArgs],
 109                     argv + startProgramArgs))
 110         {
 111                 cerr << "Couldn't start target program" << endl;
 112                 return 1;
 113         }
 114         if(printInitial)
 115         {
 116             child->outputStartState(cout);
 117         }
 118         if(printTrace)
 119         {
 120             // Connect to m5
 121             bool portSet = false;
 122             int port;
 123             int sock = socket(AF_INET, SOCK_STREAM, 0);
 124             if(sock < 0)
 125             {
 126                 cerr << "Error opening socket! " << strerror(errno) << endl;
 127                 return 1;
 128             }
 129             struct hostent *server;
 130             server = gethostbyname("zower.eecs.umich.edu");
 131             if(!server)
 132             {
 133                 cerr << "Couldn't get host ip! " << strerror(errno) << endl;
 134                 return 1;
 135             }
 136             struct sockaddr_in serv_addr;
 137             bzero((char *)&serv_addr, sizeof(serv_addr));
 138             serv_addr.sin_family = AF_INET;
 139             bcopy((char *)server->h_addr,
 140                     (char *)&serv_addr.sin_addr.s_addr,
 141                     server->h_length);
 142             serv_addr.sin_port = htons(8000);
 143             if(connect(sock, (sockaddr *)&serv_addr, sizeof(serv_addr)) < 0)
 144             {
 145                 cerr << "Couldn't connect to server! " << strerror(errno) << endl;
 146                 return 1;
 147             }
 148             child->step();
 149             while(child->isTracing())
 150             {
 151                     if(!child->sendState(sock))
 152                         break;
 153                     child->step();
 154             }
 155         }
 156         if(!child->stopTracing())
 157         {
 158                 cerr << "Couldn't stop child" << endl;
 159                 return 1;
 160         }
 161         return 0;
 162 }
 163