| 1 | /* run front end support for all the simulators. |
| 2 | Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
| 3 | 2002, 2003, 2004, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 3 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | /* Steve Chamberlain sac@cygnus.com, |
| 19 | and others at Cygnus. */ |
| 20 | |
| 21 | #ifdef HAVE_CONFIG_H |
| 22 | #include "cconfig.h" |
| 23 | #include "tconfig.h" |
| 24 | #endif |
| 25 | |
| 26 | #include <signal.h> |
| 27 | #include <stdio.h> |
| 28 | #ifdef __STDC__ |
| 29 | #include <stdarg.h> |
| 30 | #else |
| 31 | #include <varargs.h> |
| 32 | #endif |
| 33 | |
| 34 | #ifdef HAVE_STDLIB_H |
| 35 | #include <stdlib.h> |
| 36 | #endif |
| 37 | |
| 38 | #ifdef HAVE_STRING_H |
| 39 | #include <string.h> |
| 40 | #else |
| 41 | #ifdef HAVE_STRINGS_H |
| 42 | #include <strings.h> |
| 43 | #endif |
| 44 | #endif |
| 45 | |
| 46 | #include "libiberty.h" |
| 47 | #include "bfd.h" |
| 48 | #include "gdb/callback.h" |
| 49 | #include "gdb/remote-sim.h" |
| 50 | #include "ansidecl.h" |
| 51 | #include "run-sim.h" |
| 52 | #include "version.h" |
| 53 | |
| 54 | static void usage PARAMS ((int help)); |
| 55 | static void print_version PARAMS ((void)); |
| 56 | extern int optind; |
| 57 | extern char *optarg; |
| 58 | |
| 59 | extern host_callback default_callback; |
| 60 | |
| 61 | static char *myname; |
| 62 | |
| 63 | extern int getopt (); |
| 64 | |
| 65 | #ifdef NEED_UI_LOOP_HOOK |
| 66 | /* Gdb foolery. This is only needed for gdb using a gui. */ |
| 67 | int (*deprecated_ui_loop_hook) PARAMS ((int signo)); |
| 68 | #endif |
| 69 | |
| 70 | static SIM_DESC sd; |
| 71 | |
| 72 | static RETSIGTYPE |
| 73 | cntrl_c (int sig ATTRIBUTE_UNUSED) |
| 74 | { |
| 75 | if (! sim_stop (sd)) |
| 76 | { |
| 77 | fprintf (stderr, "Quit!\n"); |
| 78 | exit (1); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | int |
| 83 | main (ac, av) |
| 84 | int ac; |
| 85 | char **av; |
| 86 | { |
| 87 | RETSIGTYPE (*prev_sigint) (); |
| 88 | bfd *abfd; |
| 89 | int i; |
| 90 | int verbose = 0; |
| 91 | int trace = 0; |
| 92 | #ifdef SIM_HAVE_ENVIRONMENT |
| 93 | int operating_p = 0; |
| 94 | #endif |
| 95 | char *name; |
| 96 | static char *no_args[4]; |
| 97 | char **sim_argv = &no_args[0]; |
| 98 | char **prog_args; |
| 99 | enum sim_stop reason; |
| 100 | int sigrc; |
| 101 | |
| 102 | myname = av[0] + strlen (av[0]); |
| 103 | while (myname > av[0] && myname[-1] != '/') |
| 104 | --myname; |
| 105 | |
| 106 | /* The first element of sim_open's argv is the program name. */ |
| 107 | no_args[0] = av[0]; |
| 108 | #ifdef SIM_HAVE_BIENDIAN |
| 109 | no_args[1] = "-E"; |
| 110 | no_args[2] = "set-later"; |
| 111 | #endif |
| 112 | |
| 113 | /* FIXME: This is currently being migrated into sim_open. |
| 114 | Simulators that use functions such as sim_size() still require |
| 115 | this. */ |
| 116 | default_callback.init (&default_callback); |
| 117 | sim_set_callbacks (&default_callback); |
| 118 | |
| 119 | #ifdef SIM_TARGET_SWITCHES |
| 120 | ac = sim_target_parse_command_line (ac, av); |
| 121 | #endif |
| 122 | |
| 123 | for (i = 1; av[i]; ++i) |
| 124 | { |
| 125 | if (strcmp (av[i], "--help") == 0) |
| 126 | { |
| 127 | usage (1); |
| 128 | } |
| 129 | else if (strcmp (av[i], "--version") == 0) |
| 130 | { |
| 131 | print_version (); |
| 132 | return 0; |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | /* FIXME: This is currently being rewritten to have each simulator |
| 137 | do all argv processing. */ |
| 138 | |
| 139 | while ((i = getopt (ac, av, "a:c:m:op:s:tv")) != EOF) |
| 140 | switch (i) |
| 141 | { |
| 142 | case 'a': |
| 143 | /* FIXME: Temporary hack. */ |
| 144 | { |
| 145 | int len = strlen (av[0]) + strlen (optarg); |
| 146 | char *argbuf = (char *) alloca (len + 2 + 50); |
| 147 | sprintf (argbuf, "%s %s", av[0], optarg); |
| 148 | #ifdef SIM_HAVE_BIENDIAN |
| 149 | /* The desired endianness must be passed to sim_open. |
| 150 | The value for "set-later" is set when we know what it is. |
| 151 | -E support isn't yet part of the published interface. */ |
| 152 | strcat (argbuf, " -E set-later"); |
| 153 | #endif |
| 154 | sim_argv = buildargv (argbuf); |
| 155 | } |
| 156 | break; |
| 157 | #ifdef SIM_HAVE_SIMCACHE |
| 158 | case 'c': |
| 159 | sim_set_simcache_size (atoi (optarg)); |
| 160 | break; |
| 161 | #endif |
| 162 | case 'm': |
| 163 | /* FIXME: Rename to sim_set_mem_size. */ |
| 164 | sim_size (atoi (optarg)); |
| 165 | break; |
| 166 | #ifdef SIM_HAVE_ENVIRONMENT |
| 167 | case 'o': |
| 168 | /* Operating enironment where any signals are delivered to the |
| 169 | target. */ |
| 170 | operating_p = 1; |
| 171 | break; |
| 172 | #endif |
| 173 | #ifdef SIM_HAVE_PROFILE |
| 174 | case 'p': |
| 175 | sim_set_profile (atoi (optarg)); |
| 176 | break; |
| 177 | case 's': |
| 178 | sim_set_profile_size (atoi (optarg)); |
| 179 | break; |
| 180 | #endif |
| 181 | case 't': |
| 182 | trace = 1; |
| 183 | break; |
| 184 | case 'v': |
| 185 | /* Things that are printed with -v are the kinds of things that |
| 186 | gcc -v prints. This is not meant to include detailed tracing |
| 187 | or debugging information, just summaries. */ |
| 188 | verbose = 1; |
| 189 | /* sim_set_verbose (1); */ |
| 190 | break; |
| 191 | /* FIXME: Quick hack, to be replaced by more general facility. */ |
| 192 | default: |
| 193 | usage (0); |
| 194 | } |
| 195 | |
| 196 | ac -= optind; |
| 197 | av += optind; |
| 198 | if (ac <= 0) |
| 199 | usage (0); |
| 200 | |
| 201 | name = *av; |
| 202 | prog_args = av; |
| 203 | |
| 204 | if (verbose) |
| 205 | { |
| 206 | printf ("%s %s\n", myname, name); |
| 207 | } |
| 208 | |
| 209 | abfd = bfd_openr (name, 0); |
| 210 | if (!abfd) |
| 211 | { |
| 212 | fprintf (stderr, "%s: can't open %s: %s\n", |
| 213 | myname, name, bfd_errmsg (bfd_get_error ())); |
| 214 | exit (1); |
| 215 | } |
| 216 | |
| 217 | if (!bfd_check_format (abfd, bfd_object)) |
| 218 | { |
| 219 | fprintf (stderr, "%s: can't load %s: %s\n", |
| 220 | myname, name, bfd_errmsg (bfd_get_error ())); |
| 221 | exit (1); |
| 222 | } |
| 223 | |
| 224 | #ifdef SIM_HAVE_BIENDIAN |
| 225 | /* The endianness must be passed to sim_open because one may wish to |
| 226 | examine/set registers before calling sim_load [which is the other |
| 227 | place where one can determine endianness]. We previously passed the |
| 228 | endianness via global `target_byte_order' but that's not a clean |
| 229 | interface. */ |
| 230 | for (i = 1; sim_argv[i + 1] != NULL; ++i) |
| 231 | continue; |
| 232 | if (bfd_big_endian (abfd)) |
| 233 | sim_argv[i] = "big"; |
| 234 | else |
| 235 | sim_argv[i] = "little"; |
| 236 | #endif |
| 237 | |
| 238 | /* Ensure that any run-time initialisation that needs to be |
| 239 | performed by the simulator can occur. */ |
| 240 | sd = sim_open (SIM_OPEN_STANDALONE, &default_callback, abfd, sim_argv); |
| 241 | if (sd == 0) |
| 242 | exit (1); |
| 243 | |
| 244 | if (sim_load (sd, name, abfd, 0) == SIM_RC_FAIL) |
| 245 | exit (1); |
| 246 | |
| 247 | if (sim_create_inferior (sd, abfd, prog_args, NULL) == SIM_RC_FAIL) |
| 248 | exit (1); |
| 249 | |
| 250 | #ifdef SIM_HAVE_ENVIRONMENT |
| 251 | /* NOTE: An old simulator supporting the operating environment MUST |
| 252 | provide sim_set_trace() and not sim_trace(). That way |
| 253 | sim_stop_reason() can be used to determine any stop reason. */ |
| 254 | if (trace) |
| 255 | sim_set_trace (); |
| 256 | sigrc = 0; |
| 257 | do |
| 258 | { |
| 259 | prev_sigint = signal (SIGINT, cntrl_c); |
| 260 | sim_resume (sd, 0, sigrc); |
| 261 | signal (SIGINT, prev_sigint); |
| 262 | sim_stop_reason (sd, &reason, &sigrc); |
| 263 | } |
| 264 | while (operating_p && reason == sim_stopped && sigrc != SIGINT); |
| 265 | #else |
| 266 | if (trace) |
| 267 | { |
| 268 | int done = 0; |
| 269 | prev_sigint = signal (SIGINT, cntrl_c); |
| 270 | while (!done) |
| 271 | { |
| 272 | done = sim_trace (sd); |
| 273 | } |
| 274 | signal (SIGINT, prev_sigint); |
| 275 | sim_stop_reason (sd, &reason, &sigrc); |
| 276 | } |
| 277 | else |
| 278 | { |
| 279 | prev_sigint = signal (SIGINT, cntrl_c); |
| 280 | sigrc = 0; |
| 281 | sim_resume (sd, 0, sigrc); |
| 282 | signal (SIGINT, prev_sigint); |
| 283 | sim_stop_reason (sd, &reason, &sigrc); |
| 284 | } |
| 285 | #endif |
| 286 | |
| 287 | if (verbose) |
| 288 | sim_info (sd, 0); |
| 289 | sim_close (sd, 0); |
| 290 | |
| 291 | /* If reason is sim_exited, then sigrc holds the exit code which we want |
| 292 | to return. If reason is sim_stopped or sim_signalled, then sigrc holds |
| 293 | the signal that the simulator received; we want to return that to |
| 294 | indicate failure. */ |
| 295 | |
| 296 | /* Why did we stop? */ |
| 297 | switch (reason) |
| 298 | { |
| 299 | case sim_signalled: |
| 300 | case sim_stopped: |
| 301 | if (sigrc != 0) |
| 302 | fprintf (stderr, "program stopped with signal %d.\n", sigrc); |
| 303 | break; |
| 304 | |
| 305 | case sim_exited: |
| 306 | break; |
| 307 | |
| 308 | case sim_running: |
| 309 | case sim_polling: /* These indicate a serious problem. */ |
| 310 | abort (); |
| 311 | break; |
| 312 | |
| 313 | } |
| 314 | |
| 315 | return sigrc; |
| 316 | } |
| 317 | |
| 318 | static void |
| 319 | usage (int help) |
| 320 | { |
| 321 | FILE *stream = help ? stdout : stderr; |
| 322 | |
| 323 | fprintf (stream, "Usage: %s [options] program [program args]\n", myname); |
| 324 | fprintf (stream, "Options:\n"); |
| 325 | fprintf (stream, "-a args Pass `args' to simulator.\n"); |
| 326 | #ifdef SIM_HAVE_SIMCACHE |
| 327 | fprintf (stream, "-c size Set simulator cache size to `size'.\n"); |
| 328 | #endif |
| 329 | fprintf (stream, "-m size Set memory size of simulator, in bytes.\n"); |
| 330 | #ifdef SIM_HAVE_ENVIRONMENT |
| 331 | fprintf (stream, "-o Select operating (kernel) environment.\n"); |
| 332 | #endif |
| 333 | #ifdef SIM_HAVE_PROFILE |
| 334 | fprintf (stream, "-p freq Set profiling frequency.\n"); |
| 335 | fprintf (stream, "-s size Set profiling size.\n"); |
| 336 | #endif |
| 337 | fprintf (stream, "-t Perform instruction tracing.\n"); |
| 338 | fprintf (stream, " Note: Very few simulators support tracing.\n"); |
| 339 | fprintf (stream, "-v Verbose output.\n"); |
| 340 | fprintf (stream, "\n"); |
| 341 | fprintf (stream, "program args Arguments to pass to simulated program.\n"); |
| 342 | fprintf (stream, " Note: Very few simulators support this.\n"); |
| 343 | #ifdef SIM_TARGET_SWITCHES |
| 344 | fprintf (stream, "\nTarget specific options:\n"); |
| 345 | sim_target_display_usage (help); |
| 346 | #endif |
| 347 | |
| 348 | if (help && REPORT_BUGS_TO[0]) |
| 349 | printf ("Report bugs to %s\n", REPORT_BUGS_TO); |
| 350 | |
| 351 | exit (help ? 0 : 1); |
| 352 | } |
| 353 | |
| 354 | static void |
| 355 | print_version () |
| 356 | { |
| 357 | printf ("GNU simulator %s%s\n", PKGVERSION, version); |
| 358 | } |