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