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