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/* main.c --- main function for stand-alone M32C simulator.

Copyright (C) 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.

Contributed by Red Hat, Inc.

This file is part of the GNU simulators.

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/>.  */

#include "config.h"

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#include <unistd.h>

#include <assert.h>

#include <setjmp.h>

#include <signal.h>

#include <sys/types.h>

#ifdef HAVE_SYS_SOCKET_H

#ifdef HAVE_NETINET_IN_H

#ifdef HAVE_NETINET_TCP_H

#define HAVE_networking

#endif

#endif

#endif

#ifdef HAVE_networking

#include <sys/socket.h>

#include <netinet/in.h>

#include <netinet/tcp.h>

#endif

#include "bfd.h"

#include "cpu.h"

#include "mem.h"

#include "misc.h"

#include "load.h"

#include "trace.h"

#ifdef TIMER_A

#include "int.h"

#include "timer_a.h"

#endif

#ifdef HAVE_networking

extern int m32c_console_ofd;

extern int m32c_console_ifd;

#endif

int m32c_disassemble = 0;

static unsigned int cycles = 0;

static void

done (int exit_code)

{

  if (verbose)

    {

      stack_heap_stats ();

      mem_usage_stats ();

      printf ("insns: %14s\n", comma (cycles));

    }

  exit (exit_code);

}

#ifdef HAVE_networking

static void

setup_tcp_console (char *portname)

{

  int port = atoi (portname);

  struct sockaddr_in address;

  int isocket;

  socklen_t as;

  unsigned char *a;

  if (port < 1024)

    {

      printf ("invalid port number %d\n", port);

      exit (1);

    }

  printf ("waiting for tcp console on port %d\n", port);

  memset (&address, 0, sizeof (address));

  address.sin_family = AF_INET;

  address.sin_port = htons (port);

  isocket = socket (AF_INET, SOCK_STREAM, 0);

  if (isocket < 0)

    {

      perror ("socket");

      exit (1);

    }

  if (bind (isocket, (struct sockaddr *) &address, sizeof (address)))

    {

      perror ("bind");

      exit (1);

    }

  listen (isocket, 2);

  printf ("waiting for connection...\n");

  as = sizeof (address);

  m32c_console_ifd = accept (isocket, (struct sockaddr *) &address, &as);

  if (m32c_console_ifd == -1)

    {

      perror ("accept");

      exit (1);

    }

  a = (unsigned char *) (&address.sin_addr.s_addr);

  printf ("connection from %d.%d.%d.%d\n", a[0], a[1], a[2], a[3]);

  m32c_console_ofd = m32c_console_ifd;

}

#endif

int

main (int argc, char **argv)

{

  int o;

  int save_trace;

  bfd *prog;

#ifdef HAVE_networking

  char *console_port_s = 0;

#endif

  setbuf (stdout, 0);

  in_gdb = 0;

  while ((o = getopt (argc, argv, "tc:vdm:C")) != -1)

    switch (o)

      {

      case 't':

        trace++;

        break;

      case 'c':

#ifdef HAVE_networking

        console_port_s = optarg;

#else

        fprintf (stderr, "Nework console not available in this build.\n");

#endif

        break;

      case 'C':

#ifdef HAVE_TERMIOS_H

        m32c_use_raw_console = 1;

#else

        fprintf (stderr, "Raw console not available in this build.\n");

#endif

        break;

      case 'v':

        verbose++;

        break;

      case 'd':

        m32c_disassemble++;

        break;

      case 'm':

        if (strcmp (optarg, "r8c") == 0 || strcmp (optarg, "m16c") == 0)

          default_machine = bfd_mach_m16c;

        else if (strcmp (optarg, "m32cm") == 0

                 || strcmp (optarg, "m32c") == 0)

          default_machine = bfd_mach_m32c;

        else

          {

            fprintf (stderr, "Invalid machine: %s\n", optarg);

            exit (1);

          }

        break;

      case '?':

        fprintf (stderr,

                 "usage: run [-v] [-C] [-c port] [-t] [-d] [-m r8c|m16c|m32cm|m32c]"

                 " program\n");

        exit (1);

      }

  prog = bfd_openr (argv[optind], 0);

  if (!prog)

    {

      fprintf (stderr, "Can't read %s\n", argv[optind]);

      exit (1);

    }

  if (!bfd_check_format (prog, bfd_object))

    {

      fprintf (stderr, "%s not a m32c program\n", argv[optind]);

      exit (1);

    }

  save_trace = trace;

  trace = 0;

  m32c_load (prog);

  trace = save_trace;

#ifdef HAVE_networking

  if (console_port_s)

    setup_tcp_console (console_port_s);

#endif

  sim_disasm_init (prog);

  while (1)

    {

      int rc;

      if (trace)

        printf ("\n");

      if (m32c_disassemble)

        sim_disasm_one ();

      enable_counting = verbose;

      cycles++;

      rc = decode_opcode ();

      enable_counting = 0;

      if (M32C_HIT_BREAK (rc))

        done (1);

      else if (M32C_EXITED (rc))

        done (M32C_EXIT_STATUS (rc));

      else

        assert (M32C_STEPPED (rc));

      trace_register_changes ();

#ifdef TIMER_A

      update_timer_a ();

#endif

    }

}