sim/common/run.c

   1 /* run front end support for all the simulators.
   2    Copyright (C) 1992, 93-96, 1997, 2002 Free Software Foundation, Inc.
   3
   4 This program is free software; you can redistribute it and/or modify
   5 it under the terms of the GNU General Public License as published by
   6 the Free Software Foundation; either version 2, or (at your option)
   7 any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 GNU General Public License for more details.
  13
  14 You should have received a copy of the GNU General Public License along
  15 with this program; if not, write to the Free Software Foundation, Inc.,
  16 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  17
  18 /* Steve Chamberlain sac@cygnus.com,
  19    and others at Cygnus.  */
  20
  21 #include "config.h"
  22 #include "tconfig.h"
  23
  24 #include <signal.h>
  25 #include <stdio.h>
  26 #ifdef __STDC__
  27 #include <stdarg.h>
  28 #else
  29 #include <varargs.h>
  30 #endif
  31
  32 #ifdef HAVE_STDLIB_H
  33 #include <stdlib.h>
  34 #endif
  35
  36 #ifdef HAVE_STRING_H
  37 #include <string.h>
  38 #else
  39 #ifdef HAVE_STRINGS_H
  40 #include <strings.h>
  41 #endif
  42 #endif
  43
  44 #include "libiberty.h"
  45 #include "bfd.h"
  46 #include "callback.h"
  47 #include "remote-sim.h"
  48 #include "ansidecl.h"
  49 #include "run-sim.h"
  50
  51 static void usage PARAMS ((void));
  52 extern int optind;
  53 extern char *optarg;
  54
  55 extern host_callback default_callback;
  56
  57 static char *myname;
  58
  59 extern int getopt ();
  60
  61 #ifdef NEED_UI_LOOP_HOOK
  62 /* Gdb foolery. This is only needed for gdb using a gui. */
  63 int (*ui_loop_hook) PARAMS ((int signo));
  64 #endif
  65
  66 static SIM_DESC sd;
  67
  68 static RETSIGTYPE
  69 cntrl_c (int sig ATTRIBUTE_UNUSED)
  70 {
  71   if (! sim_stop (sd))
  72     {
  73       fprintf (stderr, "Quit!\n");
  74       exit (1);
  75     }
  76 }
  77
  78 int
  79 main (ac, av)
  80      int ac;
  81      char **av;
  82 {
  83   RETSIGTYPE (*prev_sigint) ();
  84   bfd *abfd;
  85   int i;
  86   int verbose = 0;
  87   int trace = 0;
  88 #ifdef SIM_HAVE_ENVIRONMENT
  89   int operating_p = 0;
  90 #endif
  91   char *name;
  92   static char *no_args[4];
  93   char **sim_argv = &no_args[0];
  94   char **prog_args;
  95   enum sim_stop reason;
  96   int sigrc;
  97
  98   myname = av[0] + strlen (av[0]);
  99   while (myname > av[0] && myname[-1] != '/')
 100     --myname;
 101
 102   /* The first element of sim_open's argv is the program name.  */
 103   no_args[0] = av[0];
 104 #ifdef SIM_HAVE_BIENDIAN
 105   no_args[1] = "-E";
 106   no_args[2] = "set-later";
 107 #endif
 108
 109   /* FIXME: This is currently being migrated into sim_open.
 110      Simulators that use functions such as sim_size() still require
 111      this. */
 112   default_callback.init (&default_callback);
 113   sim_set_callbacks (&default_callback);
 114
 115 #ifdef SIM_TARGET_SWITCHES
 116   ac = sim_target_parse_command_line (ac, av);
 117 #endif
 118
 119   /* FIXME: This is currently being rewritten to have each simulator
 120      do all argv processing.  */
 121
 122 #ifdef SIM_H8300 /* FIXME: quick hack */
 123   while ((i = getopt (ac, av, "a:c:m:op:s:hStv")) != EOF)
 124 #else
 125   while ((i = getopt (ac, av, "a:c:m:op:s:tv")) != EOF)
 126 #endif
 127     switch (i)
 128       {
 129       case 'a':
 130         /* FIXME: Temporary hack.  */
 131         {
 132           int len = strlen (av[0]) + strlen (optarg);
 133           char *argbuf = (char *) alloca (len + 2 + 50);
 134           sprintf (argbuf, "%s %s", av[0], optarg);
 135 #ifdef SIM_HAVE_BIENDIAN
 136           /* The desired endianness must be passed to sim_open.
 137              The value for "set-later" is set when we know what it is.
 138              -E support isn't yet part of the published interface.  */
 139           strcat (argbuf, " -E set-later");
 140 #endif
 141           sim_argv = buildargv (argbuf);
 142         }
 143         break;
 144 #ifdef SIM_HAVE_SIMCACHE
 145       case 'c':
 146         sim_set_simcache_size (atoi (optarg));
 147         break;
 148 #endif
 149       case 'm':
 150         /* FIXME: Rename to sim_set_mem_size.  */
 151         sim_size (atoi (optarg));
 152         break;
 153 #ifdef SIM_HAVE_ENVIRONMENT
 154       case 'o':
 155         /* Operating enironment where any signals are delivered to the
 156            target. */
 157         operating_p = 1;
 158         break;
 159 #endif SIM_HAVE_ENVIRONMENT
 160 #ifdef SIM_HAVE_PROFILE
 161       case 'p':
 162         sim_set_profile (atoi (optarg));
 163         break;
 164       case 's':
 165         sim_set_profile_size (atoi (optarg));
 166         break;
 167 #endif
 168       case 't':
 169         trace = 1;
 170         break;
 171       case 'v':
 172         /* Things that are printed with -v are the kinds of things that
 173            gcc -v prints.  This is not meant to include detailed tracing
 174            or debugging information, just summaries.  */
 175         verbose = 1;
 176         /* sim_set_verbose (1); */
 177         break;
 178         /* FIXME: Quick hack, to be replaced by more general facility.  */
 179 #ifdef SIM_H8300
 180       case 'h':
 181         set_h8300h (1,0);
 182         break;
 183       case 'S':
 184         set_h8300h (1,1);
 185         break;
 186 #endif
 187       default:
 188         usage ();
 189       }
 190
 191   ac -= optind;
 192   av += optind;
 193   if (ac <= 0)
 194     usage ();
 195
 196   name = *av;
 197   prog_args = av;
 198
 199   if (verbose)
 200     {
 201       printf ("%s %s\n", myname, name);
 202     }
 203
 204   abfd = bfd_openr (name, 0);
 205   if (!abfd)
 206     {
 207       fprintf (stderr, "%s: can't open %s: %s\n",
 208                myname, name, bfd_errmsg (bfd_get_error ()));
 209       exit (1);
 210     }
 211
 212   if (!bfd_check_format (abfd, bfd_object))
 213     {
 214       fprintf (stderr, "%s: can't load %s: %s\n",
 215                myname, name, bfd_errmsg (bfd_get_error ()));
 216       exit (1);
 217     }
 218
 219 #ifdef SIM_HAVE_BIENDIAN
 220   /* The endianness must be passed to sim_open because one may wish to
 221      examine/set registers before calling sim_load [which is the other
 222      place where one can determine endianness].  We previously passed the
 223      endianness via global `target_byte_order' but that's not a clean
 224      interface.  */
 225   for (i = 1; sim_argv[i + 1] != NULL; ++i)
 226     continue;
 227   if (bfd_big_endian (abfd))
 228     sim_argv[i] = "big";
 229   else
 230     sim_argv[i] = "little";
 231 #endif
 232
 233   /* Ensure that any run-time initialisation that needs to be
 234      performed by the simulator can occur. */
 235   sd = sim_open (SIM_OPEN_STANDALONE, &default_callback, abfd, sim_argv);
 236   if (sd == 0)
 237     exit (1);
 238
 239   if (sim_load (sd, name, abfd, 0) == SIM_RC_FAIL)
 240     exit (1);
 241
 242   if (sim_create_inferior (sd, abfd, prog_args, NULL) == SIM_RC_FAIL)
 243     exit (1);
 244
 245 #ifdef SIM_HAVE_ENVIRONMENT
 246   /* NOTE: An old simulator supporting the operating environment MUST
 247      provide sim_set_trace() and not sim_trace(). That way
 248      sim_stop_reason() can be used to determine any stop reason. */
 249   if (trace)
 250     sim_set_trace ();
 251   sigrc = 0;
 252   do
 253     {
 254       prev_sigint = signal (SIGINT, cntrl_c);
 255       sim_resume (sd, 0, sigrc);
 256       signal (SIGINT, prev_sigint);
 257       sim_stop_reason (sd, &reason, &sigrc);
 258     }
 259   while (operating_p && reason == sim_stopped && sigrc != SIGINT);
 260 #else
 261   if (trace)
 262     {
 263       int done = 0;
 264       prev_sigint = signal (SIGINT, cntrl_c);
 265       while (!done)
 266         {
 267           done = sim_trace (sd);
 268         }
 269       signal (SIGINT, prev_sigint);
 270       sim_stop_reason (sd, &reason, &sigrc);
 271     }
 272   else
 273     {
 274       prev_sigint = signal (SIGINT, cntrl_c);
 275       sigrc = 0;
 276       sim_resume (sd, 0, sigrc);
 277       signal (SIGINT, prev_sigint);
 278       sim_stop_reason (sd, &reason, &sigrc);
 279     }
 280 #endif
 281
 282   if (verbose)
 283     sim_info (sd, 0);
 284   sim_close (sd, 0);
 285
 286   /* If reason is sim_exited, then sigrc holds the exit code which we want
 287      to return.  If reason is sim_stopped or sim_signalled, then sigrc holds
 288      the signal that the simulator received; we want to return that to
 289      indicate failure.  */
 290
 291 #ifdef SIM_H8300 /* FIXME: Ugh.  grep for SLEEP in compile.c  */
 292   if (sigrc == SIGILL)
 293     abort ();
 294   sigrc = 0;
 295 #else
 296   /* Why did we stop? */
 297   switch (reason)
 298     {
 299     case sim_signalled:
 300     case sim_stopped:
 301       if (sigrc != 0)
 302         fprintf (stderr, "program stopped with signal %d.\n", sigrc);
 303       break;
 304
 305     case sim_exited:
 306       break;
 307
 308     case sim_running:
 309     case sim_polling: /* these indicate a serious problem */
 310       abort ();
 311       break;
 312
 313     }
 314 #endif
 315
 316   return sigrc;
 317 }
 318
 319 static void
 320 usage ()
 321 {
 322   fprintf (stderr, "Usage: %s [options] program [program args]\n", myname);
 323   fprintf (stderr, "Options:\n");
 324   fprintf (stderr, "-a args         Pass `args' to simulator.\n");
 325 #ifdef SIM_HAVE_SIMCACHE
 326   fprintf (stderr, "-c size         Set simulator cache size to `size'.\n");
 327 #endif
 328 #ifdef SIM_H8300
 329   fprintf (stderr, "-h              Executable is for h8/300h.\n");
 330   fprintf (stderr, "-S              Executable is for h8/300s.\n");
 331 #endif
 332   fprintf (stderr, "-m size         Set memory size of simulator, in bytes.\n");
 333 #ifdef SIM_HAVE_ENVIRONMENT
 334   fprintf (stderr, "-o              Select operating (kernel) environment.\n");
 335 #endif
 336 #ifdef SIM_HAVE_PROFILE
 337   fprintf (stderr, "-p freq         Set profiling frequency.\n");
 338   fprintf (stderr, "-s size         Set profiling size.\n");
 339 #endif
 340   fprintf (stderr, "-t              Perform instruction tracing.\n");
 341   fprintf (stderr, "                Note: Very few simulators support tracing.\n");
 342   fprintf (stderr, "-v              Verbose output.\n");
 343   fprintf (stderr, "\n");
 344   fprintf (stderr, "program args    Arguments to pass to simulated program.\n");
 345   fprintf (stderr, "                Note: Very few simulators support this.\n");
 346 #ifdef SIM_TARGET_SWITCHES
 347   fprintf (stderr, "\nTarget specific options:\n");
 348   sim_target_display_usage ();
 349 #endif
 350   exit (1);
 351 }