src/sim/main.cc

   1 /*
   2  * Copyright (c) 2000-2005 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: Nathan Binkert
  29  */
  30
  31 #include <Python.h>
  32
  33 #include <iostream>
  34 #include <string>
  35
  36 #include "base/cprintf.hh"
  37 #include "base/misc.hh"
  38 #include "config/pythonhome.hh"
  39 #include "python/swig/init.hh"
  40 #include "sim/async.hh"
  41 #include "sim/host.hh"
  42 #include "sim/root.hh"
  43
  44 using namespace std;
  45
  46 /// Stats signal handler.
  47 void
  48 dumpStatsHandler(int sigtype)
  49 {
  50     async_event = true;
  51     async_statdump = true;
  52 }
  53
  54 void
  55 dumprstStatsHandler(int sigtype)
  56 {
  57     async_event = true;
  58     async_statdump = true;
  59     async_statreset = true;
  60 }
  61
  62 /// Exit signal handler.
  63 void
  64 exitNowHandler(int sigtype)
  65 {
  66     async_event = true;
  67     async_exit = true;
  68 }
  69
  70 /// Abort signal handler.
  71 void
  72 abortHandler(int sigtype)
  73 {
  74     ccprintf(cerr, "Program aborted at cycle %d\n", curTick);
  75 }
  76
  77 int
  78 main(int argc, char **argv)
  79 {
  80     signal(SIGFPE, SIG_IGN);            // may occur on misspeculated paths
  81     signal(SIGTRAP, SIG_IGN);
  82     signal(SIGUSR1, dumpStatsHandler);          // dump intermediate stats
  83     signal(SIGUSR2, dumprstStatsHandler);       // dump and reset stats
  84     signal(SIGINT, exitNowHandler);             // dump final stats and exit
  85     signal(SIGABRT, abortHandler);
  86
  87     Py_SetProgramName(argv[0]);
  88
  89     // default path to m5 python code is the currently executing
  90     // file... Python ZipImporter will find embedded zip archive.
  91     // The M5_ARCHIVE environment variable can be used to override this.
  92     char *m5_archive = getenv("M5_ARCHIVE");
  93     string pythonpath = m5_archive ? m5_archive : argv[0];
  94
  95     char *oldpath = getenv("PYTHONPATH");
  96     if (oldpath != NULL) {
  97         pythonpath += ":";
  98         pythonpath += oldpath;
  99     }
 100
 101     if (setenv("PYTHONPATH", pythonpath.c_str(), true) == -1)
 102         fatal("setenv: %s\n", strerror(errno));
 103
 104     char *python_home = getenv("PYTHONHOME");
 105     if (!python_home)
 106         python_home = PYTHONHOME;
 107     Py_SetPythonHome(python_home);
 108
 109     // initialize embedded Python interpreter
 110     Py_Initialize();
 111     PySys_SetArgv(argc, argv);
 112
 113     // initialize SWIG modules
 114     init_swig();
 115
 116     PyRun_SimpleString("import m5.main");
 117     PyRun_SimpleString("m5.main.main()");
 118
 119     // clean up Python intepreter.
 120     Py_Finalize();
 121 }