sim/m32c/main.c

   1 /* main.c --- main function for stand-alone M32C simulator.
   2
   3 Copyright (C) 2005-2022 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 /* This must come before any other includes.  */
  22 #include "defs.h"
  23
  24 #include <stdio.h>
  25 #include <string.h>
  26 #include <stdlib.h>
  27 #include <unistd.h>
  28 #include <assert.h>
  29 #include <setjmp.h>
  30 #include <signal.h>
  31 #include <sys/types.h>
  32
  33 #ifdef HAVE_SYS_SOCKET_H
  34 #ifdef HAVE_NETINET_IN_H
  35 #ifdef HAVE_NETINET_TCP_H
  36 #define HAVE_networking
  37 #endif
  38 #endif
  39 #endif
  40
  41 #ifdef HAVE_networking
  42 #include <sys/socket.h>
  43 #include <netinet/in.h>
  44 #include <netinet/tcp.h>
  45 #endif
  46
  47
  48 #include "bfd.h"
  49
  50 #include "cpu.h"
  51 #include "mem.h"
  52 #include "misc.h"
  53 #include "load.h"
  54 #include "trace.h"
  55 #ifdef TIMER_A
  56 #include "int.h"
  57 #include "timer_a.h"
  58 #endif
  59
  60 #ifdef HAVE_networking
  61 extern int m32c_console_ofd;
  62 extern int m32c_console_ifd;
  63 #endif
  64
  65 int m32c_disassemble = 0;
  66 static unsigned int cycles = 0;
  67
  68 static void
  69 done (int exit_code)
  70 {
  71   if (verbose)
  72     {
  73       stack_heap_stats ();
  74       mem_usage_stats ();
  75       printf ("insns: %14s\n", comma (cycles));
  76     }
  77   exit (exit_code);
  78 }
  79
  80 #ifdef HAVE_networking
  81 static void
  82 setup_tcp_console (char *portname)
  83 {
  84   int port = atoi (portname);
  85   struct sockaddr_in address;
  86   int isocket;
  87   socklen_t as;
  88   unsigned char *a;
  89
  90   if (port < 1024)
  91     {
  92       printf ("invalid port number %d\n", port);
  93       exit (1);
  94     }
  95   printf ("waiting for tcp console on port %d\n", port);
  96
  97   memset (&address, 0, sizeof (address));
  98   address.sin_family = AF_INET;
  99   address.sin_port = htons (port);
 100
 101   isocket = socket (AF_INET, SOCK_STREAM, 0);
 102   if (isocket == -1)
 103     {
 104       perror ("socket");
 105       exit (1);
 106     }
 107
 108   if (bind (isocket, (struct sockaddr *) &address, sizeof (address)))
 109     {
 110       perror ("bind");
 111       exit (1);
 112     }
 113   listen (isocket, 2);
 114
 115   printf ("waiting for connection...\n");
 116   as = sizeof (address);
 117   m32c_console_ifd = accept (isocket, (struct sockaddr *) &address, &as);
 118   if (m32c_console_ifd == -1)
 119     {
 120       perror ("accept");
 121       exit (1);
 122     }
 123   a = (unsigned char *) (&address.sin_addr.s_addr);
 124   printf ("connection from %d.%d.%d.%d\n", a[0], a[1], a[2], a[3]);
 125   m32c_console_ofd = m32c_console_ifd;
 126 }
 127 #endif
 128
 129 int
 130 main (int argc, char **argv)
 131 {
 132   int o;
 133   int save_trace;
 134   bfd *prog;
 135 #ifdef HAVE_networking
 136   char *console_port_s = 0;
 137 #endif
 138
 139   setbuf (stdout, 0);
 140
 141   in_gdb = 0;
 142
 143   while ((o = getopt (argc, argv, "tc:vdm:C")) != -1)
 144     switch (o)
 145       {
 146       case 't':
 147         trace++;
 148         break;
 149       case 'c':
 150 #ifdef HAVE_networking
 151         console_port_s = optarg;
 152 #else
 153         fprintf (stderr, "Nework console not available in this build.\n");
 154 #endif
 155         break;
 156       case 'C':
 157 #ifdef HAVE_TERMIOS_H
 158         m32c_use_raw_console = 1;
 159 #else
 160         fprintf (stderr, "Raw console not available in this build.\n");
 161 #endif
 162         break;
 163       case 'v':
 164         verbose++;
 165         break;
 166       case 'd':
 167         m32c_disassemble++;
 168         break;
 169       case 'm':
 170         if (strcmp (optarg, "r8c") == 0 || strcmp (optarg, "m16c") == 0)
 171           default_machine = bfd_mach_m16c;
 172         else if (strcmp (optarg, "m32cm") == 0
 173                  || strcmp (optarg, "m32c") == 0)
 174           default_machine = bfd_mach_m32c;
 175         else
 176           {
 177             fprintf (stderr, "Invalid machine: %s\n", optarg);
 178             exit (1);
 179           }
 180         break;
 181       case '?':
 182         fprintf (stderr,
 183                  "usage: run [-v] [-C] [-c port] [-t] [-d] [-m r8c|m16c|m32cm|m32c]"
 184                  " program\n");
 185         exit (1);
 186       }
 187
 188   prog = bfd_openr (argv[optind], 0);
 189   if (!prog)
 190     {
 191       fprintf (stderr, "Can't read %s\n", argv[optind]);
 192       exit (1);
 193     }
 194
 195   if (!bfd_check_format (prog, bfd_object))
 196     {
 197       fprintf (stderr, "%s not a m32c program\n", argv[optind]);
 198       exit (1);
 199     }
 200
 201   save_trace = trace;
 202   trace = 0;
 203   m32c_load (prog);
 204   trace = save_trace;
 205
 206 #ifdef HAVE_networking
 207   if (console_port_s)
 208     setup_tcp_console (console_port_s);
 209 #endif
 210
 211   sim_disasm_init (prog);
 212
 213   while (1)
 214     {
 215       int rc;
 216
 217       if (trace)
 218         printf ("\n");
 219
 220       if (m32c_disassemble)
 221         sim_disasm_one ();
 222
 223       enable_counting = verbose;
 224       cycles++;
 225       rc = decode_opcode ();
 226       enable_counting = 0;
 227
 228       if (M32C_HIT_BREAK (rc))
 229         done (1);
 230       else if (M32C_EXITED (rc))
 231         done (M32C_EXIT_STATUS (rc));
 232       else
 233         assert (M32C_STEPPED (rc));
 234
 235       trace_register_changes ();
 236
 237 #ifdef TIMER_A
 238       update_timer_a ();
 239 #endif
 240     }
 241 }