sim/common/run.c

   1 /* run front end support for all the simulators.
   2    Copyright (C) 1992, 93-96, 1997 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
  49 #include "../libiberty/alloca-conf.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
  60 /* NOTE: sim_size() and sim_trace() are going away */
  61 extern int sim_trace PARAMS ((SIM_DESC sd));
  62
  63 extern int getopt ();
  64
  65 static SIM_DESC sd;
  66
  67 static RETSIGTYPE
  68 cntrl_c (int sig)
  69 {
  70   if (! sim_stop (sd))
  71     {
  72       fprintf (stderr, "Quit!\n");
  73       exit (1);
  74     }
  75 }
  76
  77 int
  78 main (ac, av)
  79      int ac;
  80      char **av;
  81 {
  82   RETSIGTYPE (*prev_sigint) ();
  83   bfd *abfd;
  84   int i;
  85   int verbose = 0;
  86   int trace = 0;
  87   char *name;
  88   static char *no_args[4];
  89   char **sim_argv = &no_args[0];
  90   char **prog_args;
  91   enum sim_stop reason;
  92   int sigrc;
  93
  94   myname = av[0] + strlen (av[0]);
  95   while (myname > av[0] && myname[-1] != '/')
  96     --myname;
  97
  98   /* The first element of sim_open's argv is the program name.  */
  99   no_args[0] = av[0];
 100 #ifdef SIM_HAVE_BIENDIAN
 101   no_args[1] = "-E";
 102   no_args[2] = "set-later";
 103 #endif
 104
 105   /* FIXME: This is currently being migrated into sim_open.
 106      Simulators that use functions such as sim_size() still require
 107      this. */
 108   default_callback.init (&default_callback);
 109   sim_set_callbacks (&default_callback);
 110
 111   /* FIXME: This is currently being rewritten to have each simulator
 112      do all argv processing.  */
 113
 114 #ifdef SIM_H8300 /* FIXME: quick hack */
 115   while ((i = getopt (ac, av, "a:c:m:p:s:htv")) != EOF)
 116 #else
 117   while ((i = getopt (ac, av, "a:c:m:p:s:tv")) != EOF)
 118 #endif
 119     switch (i)
 120       {
 121       case 'a':
 122         /* FIXME: Temporary hack.  */
 123         {
 124           int len = strlen (av[0]) + strlen (optarg);
 125           char *argbuf = (char *) alloca (len + 2 + 50);
 126           sprintf (argbuf, "%s %s", av[0], optarg);
 127 #ifdef SIM_HAVE_BIENDIAN
 128           /* The desired endianness must be passed to sim_open.
 129              The value for "set-later" is set when we know what it is.
 130              -E support isn't yet part of the published interface.  */
 131           strcat (argbuf, " -E set-later");
 132 #endif
 133           sim_argv = buildargv (argbuf);
 134         }
 135         break;
 136 #ifdef SIM_HAVE_SIMCACHE
 137       case 'c':
 138         sim_set_simcache_size (atoi (optarg));
 139         break;
 140 #endif
 141       case 'm':
 142         /* FIXME: Rename to sim_set_mem_size.  */
 143         sim_size (atoi (optarg));
 144         break;
 145 #ifdef SIM_HAVE_PROFILE
 146       case 'p':
 147         sim_set_profile (atoi (optarg));
 148         break;
 149       case 's':
 150         sim_set_profile_size (atoi (optarg));
 151         break;
 152 #endif
 153       case 't':
 154         trace = 1;
 155         /* FIXME: need to allow specification of what to trace.  */
 156         /* sim_set_trace (1); */
 157         break;
 158       case 'v':
 159         /* Things that are printed with -v are the kinds of things that
 160            gcc -v prints.  This is not meant to include detailed tracing
 161            or debugging information, just summaries.  */
 162         verbose = 1;
 163         /* sim_set_verbose (1); */
 164         break;
 165         /* FIXME: Quick hack, to be replaced by more general facility.  */
 166 #ifdef SIM_H8300
 167       case 'h':
 168         set_h8300h (1);
 169         break;
 170 #endif
 171       default:
 172         usage ();
 173       }
 174
 175   ac -= optind;
 176   av += optind;
 177   if (ac <= 0)
 178     usage ();
 179
 180   name = *av;
 181   prog_args = av;
 182
 183   if (verbose)
 184     {
 185       printf ("%s %s\n", myname, name);
 186     }
 187
 188   abfd = bfd_openr (name, 0);
 189   if (!abfd)
 190     {
 191       fprintf (stderr, "%s: can't open %s: %s\n",
 192                myname, name, bfd_errmsg (bfd_get_error ()));
 193       exit (1);
 194     }
 195
 196   if (!bfd_check_format (abfd, bfd_object))
 197     {
 198       fprintf (stderr, "%s: can't load %s: %s\n",
 199                myname, name, bfd_errmsg (bfd_get_error ()));
 200       exit (1);
 201     }
 202
 203 #ifdef SIM_HAVE_BIENDIAN
 204   /* The endianness must be passed to sim_open because one may wish to
 205      examine/set registers before calling sim_load [which is the other
 206      place where one can determine endianness].  We previously passed the
 207      endianness via global `target_byte_order' but that's not a clean
 208      interface.  */
 209   for (i = 1; sim_argv[i + 1] != NULL; ++i)
 210     continue;
 211   if (bfd_big_endian (abfd))
 212     sim_argv[i] = "big";
 213   else
 214     sim_argv[i] = "little";
 215 #endif
 216
 217   /* Ensure that any run-time initialisation that needs to be
 218      performed by the simulator can occur. */
 219   sd = sim_open (SIM_OPEN_STANDALONE, &default_callback, abfd, sim_argv);
 220   if (sd == 0)
 221     exit (1);
 222
 223   if (sim_load (sd, name, abfd, 0) == SIM_RC_FAIL)
 224     exit (1);
 225
 226   if (sim_create_inferior (sd, abfd, prog_args, NULL) == SIM_RC_FAIL)
 227     exit (1);
 228
 229   prev_sigint = signal (SIGINT, cntrl_c);
 230   if (trace)
 231     {
 232       int done = 0;
 233       while (!done)
 234         {
 235           done = sim_trace (sd);
 236         }
 237     }
 238   else
 239     {
 240       sim_resume (sd, 0, 0);
 241     }
 242   signal (SIGINT, prev_sigint);
 243
 244   if (verbose)
 245     sim_info (sd, 0);
 246
 247   sim_stop_reason (sd, &reason, &sigrc);
 248
 249   sim_close (sd, 0);
 250
 251   /* If reason is sim_exited, then sigrc holds the exit code which we want
 252      to return.  If reason is sim_stopped or sim_signalled, then sigrc holds
 253      the signal that the simulator received; we want to return that to
 254      indicate failure.  */
 255
 256 #ifdef SIM_H8300 /* FIXME: Ugh.  grep for SLEEP in compile.c  */
 257   if (sigrc == SIGILL)
 258     abort ();
 259   sigrc = 0;
 260 #else
 261   /* Why did we stop? */
 262   switch (reason)
 263     {
 264     case sim_signalled:
 265     case sim_stopped:
 266       if (sigrc != 0)
 267         fprintf (stderr, "program stopped with signal %d.\n", sigrc);
 268       break;
 269
 270     case sim_exited:
 271       break;
 272
 273     case sim_running:
 274     case sim_polling: /* these indicate a serious problem */
 275       abort ();
 276       break;
 277
 278     }
 279 #endif
 280
 281   return sigrc;
 282 }
 283
 284 static void
 285 usage ()
 286 {
 287   fprintf (stderr, "Usage: %s [options] program [program args]\n", myname);
 288   fprintf (stderr, "Options:\n");
 289   fprintf (stderr, "-a args         Pass `args' to simulator.\n");
 290 #ifdef SIM_HAVE_SIMCACHE
 291   fprintf (stderr, "-c size         Set simulator cache size to `size'.\n");
 292 #endif
 293 #ifdef SIM_H8300
 294   fprintf (stderr, "-h              Executable is for h8/300h or h8/300s.\n");
 295 #endif
 296   fprintf (stderr, "-m size         Set memory size of simulator, in bytes.\n");
 297 #ifdef SIM_HAVE_PROFILE
 298   fprintf (stderr, "-p freq         Set profiling frequency.\n");
 299   fprintf (stderr, "-s size         Set profiling size.\n");
 300 #endif
 301   fprintf (stderr, "-t              Perform instruction tracing.\n");
 302   fprintf (stderr, "                Note: Very few simulators support tracing.\n");
 303   fprintf (stderr, "-v              Verbose output.\n");
 304   fprintf (stderr, "\n");
 305   fprintf (stderr, "program args    Arguments to pass to simulated program.\n");
 306   fprintf (stderr, "                Note: Very few simulators support this.\n");
 307   exit (1);
 308 }