sim/m32c/main.c

   1 /* main.c --- main function for stand-alone M32C simulator.
   2
   3 Copyright (C) 2005-2017 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 "config.h"
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <stdlib.h>
  26 #include <unistd.h>
  27 #include <assert.h>
  28 #include <setjmp.h>
  29 #include <signal.h>
  30 #include <sys/types.h>
  31
  32 #ifdef HAVE_SYS_SOCKET_H
  33 #ifdef HAVE_NETINET_IN_H
  34 #ifdef HAVE_NETINET_TCP_H
  35 #define HAVE_networking
  36 #endif
  37 #endif
  38 #endif
  39
  40 #ifdef HAVE_networking
  41 #include <sys/socket.h>
  42 #include <netinet/in.h>
  43 #include <netinet/tcp.h>
  44 #endif
  45
  46
  47 #include "bfd.h"
  48
  49 #include "cpu.h"
  50 #include "mem.h"
  51 #include "misc.h"
  52 #include "load.h"
  53 #include "trace.h"
  54 #ifdef TIMER_A
  55 #include "int.h"
  56 #include "timer_a.h"
  57 #endif
  58
  59 #ifdef HAVE_networking
  60 extern int m32c_console_ofd;
  61 extern int m32c_console_ifd;
  62 #endif
  63
  64 int m32c_disassemble = 0;
  65 static unsigned int cycles = 0;
  66
  67 static void
  68 done (int exit_code)
  69 {
  70   if (verbose)
  71     {
  72       stack_heap_stats ();
  73       mem_usage_stats ();
  74       printf ("insns: %14s\n", comma (cycles));
  75     }
  76   exit (exit_code);
  77 }
  78
  79 #ifdef HAVE_networking
  80 static void
  81 setup_tcp_console (char *portname)
  82 {
  83   int port = atoi (portname);
  84   struct sockaddr_in address;
  85   int isocket;
  86   socklen_t as;
  87   unsigned char *a;
  88
  89   if (port < 1024)
  90     {
  91       printf ("invalid port number %d\n", port);
  92       exit (1);
  93     }
  94   printf ("waiting for tcp console on port %d\n", port);
  95
  96   memset (&address, 0, sizeof (address));
  97   address.sin_family = AF_INET;
  98   address.sin_port = htons (port);
  99
 100   isocket = socket (AF_INET, SOCK_STREAM, 0);
 101   if (isocket == -1)
 102     {
 103       perror ("socket");
 104       exit (1);
 105     }
 106
 107   if (bind (isocket, (struct sockaddr *) &address, sizeof (address)))
 108     {
 109       perror ("bind");
 110       exit (1);
 111     }
 112   listen (isocket, 2);
 113
 114   printf ("waiting for connection...\n");
 115   as = sizeof (address);
 116   m32c_console_ifd = accept (isocket, (struct sockaddr *) &address, &as);
 117   if (m32c_console_ifd == -1)
 118     {
 119       perror ("accept");
 120       exit (1);
 121     }
 122   a = (unsigned char *) (&address.sin_addr.s_addr);
 123   printf ("connection from %d.%d.%d.%d\n", a[0], a[1], a[2], a[3]);
 124   m32c_console_ofd = m32c_console_ifd;
 125 }
 126 #endif
 127
 128 int
 129 main (int argc, char **argv)
 130 {
 131   int o;
 132   int save_trace;
 133   bfd *prog;
 134 #ifdef HAVE_networking
 135   char *console_port_s = 0;
 136 #endif
 137
 138   setbuf (stdout, 0);
 139
 140   in_gdb = 0;
 141
 142   while ((o = getopt (argc, argv, "tc:vdm:C")) != -1)
 143     switch (o)
 144       {
 145       case 't':
 146         trace++;
 147         break;
 148       case 'c':
 149 #ifdef HAVE_networking
 150         console_port_s = optarg;
 151 #else
 152         fprintf (stderr, "Nework console not available in this build.\n");
 153 #endif
 154         break;
 155       case 'C':
 156 #ifdef HAVE_TERMIOS_H
 157         m32c_use_raw_console = 1;
 158 #else
 159         fprintf (stderr, "Raw console not available in this build.\n");
 160 #endif
 161         break;
 162       case 'v':
 163         verbose++;
 164         break;
 165       case 'd':
 166         m32c_disassemble++;
 167         break;
 168       case 'm':
 169         if (strcmp (optarg, "r8c") == 0 || strcmp (optarg, "m16c") == 0)
 170           default_machine = bfd_mach_m16c;
 171         else if (strcmp (optarg, "m32cm") == 0
 172                  || strcmp (optarg, "m32c") == 0)
 173           default_machine = bfd_mach_m32c;
 174         else
 175           {
 176             fprintf (stderr, "Invalid machine: %s\n", optarg);
 177             exit (1);
 178           }
 179         break;
 180       case '?':
 181         fprintf (stderr,
 182                  "usage: run [-v] [-C] [-c port] [-t] [-d] [-m r8c|m16c|m32cm|m32c]"
 183                  " program\n");
 184         exit (1);
 185       }
 186
 187   prog = bfd_openr (argv[optind], 0);
 188   if (!prog)
 189     {
 190       fprintf (stderr, "Can't read %s\n", argv[optind]);
 191       exit (1);
 192     }
 193
 194   if (!bfd_check_format (prog, bfd_object))
 195     {
 196       fprintf (stderr, "%s not a m32c program\n", argv[optind]);
 197       exit (1);
 198     }
 199
 200   save_trace = trace;
 201   trace = 0;
 202   m32c_load (prog);
 203   trace = save_trace;
 204
 205 #ifdef HAVE_networking
 206   if (console_port_s)
 207     setup_tcp_console (console_port_s);
 208 #endif
 209
 210   sim_disasm_init (prog);
 211
 212   while (1)
 213     {
 214       int rc;
 215
 216       if (trace)
 217         printf ("\n");
 218
 219       if (m32c_disassemble)
 220         sim_disasm_one ();
 221
 222       enable_counting = verbose;
 223       cycles++;
 224       rc = decode_opcode ();
 225       enable_counting = 0;
 226
 227       if (M32C_HIT_BREAK (rc))
 228         done (1);
 229       else if (M32C_EXITED (rc))
 230         done (M32C_EXIT_STATUS (rc));
 231       else
 232         assert (M32C_STEPPED (rc));
 233
 234       trace_register_changes ();
 235
 236 #ifdef TIMER_A
 237       update_timer_a ();
 238 #endif
 239     }
 240 }