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