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