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/* toplevel.c -- Top level simulator source file

   Copyright (C) 1999 Damjan Lampret, lampret@opencores.org

   Copyright (C) 2008 Embecosm Limited

   Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>

   This file is part of Or1ksim, the OpenRISC 1000 Architectural Simulator.

   This program is free software; you can redistribute it and/or modify it

   under the terms of the GNU General Public License as published by the Free

   Software Foundation; either version 3 of the License, or (at your option)

   any later version.

   This program is distributed in the hope that it will be useful, but WITHOUT

   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

   more details.

   You should have received a copy of the GNU General Public License along

   with this program.  If not, see <http://www.gnu.org/licenses/>.  */

/* This program is commented throughout in a fashion suitable for processing

   with Doxygen. */

/* Autoconf and/or portability configuration */

#include "config.h"

/* System includes */

#include <stdlib.h>

#include <unistd.h>

#include <signal.h>

/* Package includes */

#include "sim-config.h"

#include "toplevel-support.h"

#include "execute.h"

/*---------------------------------------------------------------------------*/

/*!Main function

   Set up the standalone simulation. Initialize the default configuration and

   register all the sections that may appear in a user configuration.

   Then attempt to parse the args, configure the system from any configuration

   file specified and print out the configuration used.

   Add a signal hander, so ctrl-C will drop the user into the CLI.

   The initialize the simulator, call the appropriate main simulator function

   and when it returns tidy up.

   @param[in] argc  The number of arguments to the command

   @param[in] argv  The vector of argument strings

   @return  The return code required from the simulator. This is actually

            achieved by calling exit() with the return code, rather than

            returning an explict value.                                      */

/*---------------------------------------------------------------------------*/

int

main (int   argc,

      char *argv[])

{

  init_randomness ();

  init_defconfig ();

  reg_config_secs ();

  if (parse_args (argc, argv))

    {

      exit (-1);                /* Parse args will have printed any messages */

    }

  print_config ();

  signal (SIGINT, ctrl_c);

  signal (SIGUSR1, toggle_trace);

  do_stats         = config.cpu.superscalar ||

                     config.cpu.dependstats ||

                     config.sim.history     ||

                     config.sim.exe_log     ||

                     config.sim.exe_bin_insn_log;

  sim_init ();

#if DYNAMIC_EXECUTION

  dyn_main ();

#else

  exec_main ();

#endif

  sim_done ();

  exit (0);

}