sim/m32c/main.c

   1 /* main.c --- main function for stand-alone M32C simulator.
   2
   3 Copyright (C) 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
   4 Contributed by Red Hat, Inc.
   5
   6 This file is part of the GNU simulators.
   7
   8 This program is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 3 of the License, or
  11 (at your option) any later version.
  12
  13 This program is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21
  22 #include <stdio.h>
  23 #include <string.h>
  24 #include <stdlib.h>
  25 #include <unistd.h>
  26 #include <assert.h>
  27 #include <setjmp.h>
  28 #include <signal.h>
  29
  30 #include <sys/types.h>
  31 #include <sys/socket.h>
  32 #include <netinet/in.h>
  33 #include <netinet/tcp.h>
  34
  35
  36 #include "bfd.h"
  37
  38 #include "cpu.h"
  39 #include "mem.h"
  40 #include "misc.h"
  41 #include "load.h"
  42 #include "trace.h"
  43 #ifdef TIMER_A
  44 #include "int.h"
  45 #include "timer_a.h"
  46 #endif
  47
  48 extern int m32c_console_ofd;
  49 extern int m32c_console_ifd;
  50
  51 int m32c_disassemble = 0;
  52 static unsigned int cycles = 0;
  53
  54 static void
  55 done (int exit_code)
  56 {
  57   if (verbose)
  58     {
  59       stack_heap_stats ();
  60       mem_usage_stats ();
  61       printf ("insns: %14s\n", comma (cycles));
  62     }
  63   exit (exit_code);
  64 }
  65
  66 static void
  67 setup_tcp_console (char *portname)
  68 {
  69   int port = atoi (portname);
  70   struct sockaddr_in address;
  71   int isocket;
  72   socklen_t as;
  73   unsigned char *a;
  74
  75   if (port < 1024)
  76     {
  77       printf ("invalid port number %d\n", port);
  78       exit (1);
  79     }
  80   printf ("waiting for tcp console on port %d\n", port);
  81
  82   memset (&address, 0, sizeof (address));
  83   address.sin_family = AF_INET;
  84   address.sin_port = htons (port);
  85
  86   isocket = socket (AF_INET, SOCK_STREAM, 0);
  87   if (isocket < 0)
  88     {
  89       perror ("socket");
  90       exit (1);
  91     }
  92
  93   if (bind (isocket, (struct sockaddr *) &address, sizeof (address)))
  94     {
  95       perror ("bind");
  96       exit (1);
  97     }
  98   listen (isocket, 2);
  99
 100   printf ("waiting for connection...\n");
 101   as = sizeof (address);
 102   m32c_console_ifd = accept (isocket, (struct sockaddr *) &address, &as);
 103   if (m32c_console_ifd == -1)
 104     {
 105       perror ("accept");
 106       exit (1);
 107     }
 108   a = (unsigned char *) (&address.sin_addr.s_addr);
 109   printf ("connection from %d.%d.%d.%d\n", a[0], a[1], a[2], a[3]);
 110   m32c_console_ofd = m32c_console_ifd;
 111 }
 112
 113 int
 114 main (int argc, char **argv)
 115 {
 116   int o;
 117   int save_trace;
 118   bfd *prog;
 119   char *console_port_s = 0;
 120
 121   setbuf (stdout, 0);
 122
 123   in_gdb = 0;
 124
 125   while ((o = getopt (argc, argv, "tc:vdm:C")) != -1)
 126     switch (o)
 127       {
 128       case 't':
 129         trace++;
 130         break;
 131       case 'c':
 132         console_port_s = optarg;
 133         break;
 134       case 'C':
 135         m32c_use_raw_console = 1;
 136         break;
 137       case 'v':
 138         verbose++;
 139         break;
 140       case 'd':
 141         m32c_disassemble++;
 142         break;
 143       case 'm':
 144         if (strcmp (optarg, "r8c") == 0 || strcmp (optarg, "m16c") == 0)
 145           default_machine = bfd_mach_m16c;
 146         else if (strcmp (optarg, "m32cm") == 0
 147                  || strcmp (optarg, "m32c") == 0)
 148           default_machine = bfd_mach_m32c;
 149         else
 150           {
 151             fprintf (stderr, "Invalid machine: %s\n", optarg);
 152             exit (1);
 153           }
 154         break;
 155       case '?':
 156         fprintf (stderr,
 157                  "usage: run [-v] [-C] [-c port] [-t] [-d] [-m r8c|m16c|m32cm|m32c]"
 158                  " program\n");
 159         exit (1);
 160       }
 161
 162   prog = bfd_openr (argv[optind], 0);
 163   if (!prog)
 164     {
 165       fprintf (stderr, "Can't read %s\n", argv[optind]);
 166       exit (1);
 167     }
 168
 169   if (!bfd_check_format (prog, bfd_object))
 170     {
 171       fprintf (stderr, "%s not a m32c program\n", argv[optind]);
 172       exit (1);
 173     }
 174
 175   save_trace = trace;
 176   trace = 0;
 177   m32c_load (prog);
 178   trace = save_trace;
 179
 180   if (console_port_s)
 181     setup_tcp_console (console_port_s);
 182
 183   sim_disasm_init (prog);
 184
 185   while (1)
 186     {
 187       int rc;
 188
 189       if (trace)
 190         printf ("\n");
 191
 192       if (m32c_disassemble)
 193         sim_disasm_one ();
 194
 195       enable_counting = verbose;
 196       cycles++;
 197       rc = decode_opcode ();
 198       enable_counting = 0;
 199
 200       if (M32C_HIT_BREAK (rc))
 201         done (1);
 202       else if (M32C_EXITED (rc))
 203         done (M32C_EXIT_STATUS (rc));
 204       else
 205         assert (M32C_STEPPED (rc));
 206
 207       trace_register_changes ();
 208
 209 #ifdef TIMER_A
 210       update_timer_a ();
 211 #endif
 212     }
 213 }