gem5/util/statetrace/statetrace.cc

186 lines
5.6 KiB
C++

/*
* 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 <cstring>
#include <errno.h>
#include <fstream>
#include <iostream>
#include <netdb.h>
#include <netinet/in.h>
#include <stdio.h>
#include <string>
#include <sys/ptrace.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include "printer.hh"
#include "tracechild.hh"
using namespace std;
void printUsage(const char * execName)
{
cout << execName << " <options> -- <command> <arguments>" << endl;
cout << "options:" << endl;
cout << " -h print this help" << endl;
cout << " --host remote m5 host to connect to" << endl;
cout << " -r print register names" << endl;
cout << " -i print initial stack state" << endl;
cout << " -nt don't print an instruction trace" << 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;
string host = "localhost";
if (argc == 1) {
printUsage(argv[0]);
return 0;
}
for(int x = 1; x < argc; x++)
{
if(!strcmp(argv[x], "-h"))
{
printUsage(argv[0]);
return 0;
}
if(!strcmp(argv[x], "--host"))
{
x++;
if(x >= argc)
{
cerr << "Incorrect usage.\n" << endl;
printUsage(argv[0]);
return 1;
}
host = argv[x];
}
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;
}
child->step();
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(host.c_str());
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;
}
while(child->isTracing())
{
if(!child->sendState(sock))
break;
child->step();
}
}
if(!child->stopTracing())
{
cerr << "Couldn't stop child" << endl;
return 1;
}
return 0;
}