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, 2011 4 Free Software Foundation, Inc. 5 6This program is free software; you can redistribute it and/or modify 7it under the terms of the GNU General Public License as published by 8the Free Software Foundation; either version 3 of the License, or 9(at your option) any later version. 10 11This program is distributed in the hope that it will be useful, 12but WITHOUT ANY WARRANTY; without even the implied warranty of 13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14GNU General Public License for more details. 15 16You should have received a copy of the GNU General Public License 17along with this program. If not, see <http://www.gnu.org/licenses/>. */ 18 19/* Steve Chamberlain sac@cygnus.com, 20 and others at Cygnus. */ 21 22#ifdef HAVE_CONFIG_H 23#include "cconfig.h" 24#include "tconfig.h" 25#endif 26 27#include <signal.h> 28#include <stdio.h> 29#ifdef __STDC__ 30#include <stdarg.h> 31#else 32#include <varargs.h> 33#endif 34 35#ifdef HAVE_STDLIB_H 36#include <stdlib.h> 37#endif 38 39#ifdef HAVE_STRING_H 40#include <string.h> 41#else 42#ifdef HAVE_STRINGS_H 43#include <strings.h> 44#endif 45#endif 46 47#include "libiberty.h" 48#include "bfd.h" 49#include "gdb/callback.h" 50#include "gdb/remote-sim.h" 51#include "ansidecl.h" 52#include "run-sim.h" 53#include "version.h" 54 55static void usage PARAMS ((int help)); 56static void print_version PARAMS ((void)); 57extern int optind; 58extern char *optarg; 59 60extern host_callback default_callback; 61 62static char *myname; 63 64extern int getopt (); 65 66#ifdef NEED_UI_LOOP_HOOK 67/* Gdb foolery. This is only needed for gdb using a gui. */ 68int (*deprecated_ui_loop_hook) PARAMS ((int signo)); 69#endif 70 71static SIM_DESC sd; 72 73static RETSIGTYPE 74cntrl_c (int sig ATTRIBUTE_UNUSED) 75{ 76 if (! sim_stop (sd)) 77 { 78 fprintf (stderr, "Quit!\n"); 79 exit (1); 80 } 81} 82 83int 84main (ac, av) 85 int ac; 86 char **av; 87{ 88 RETSIGTYPE (*prev_sigint) (); 89 bfd *abfd; 90 int i; 91 int verbose = 0; 92 int trace = 0; 93#ifdef SIM_HAVE_ENVIRONMENT 94 int operating_p = 0; 95#endif 96 char *name; 97 static char *no_args[4]; 98 char **sim_argv = &no_args[0]; 99 char **prog_args; 100 enum sim_stop reason; 101 int sigrc; 102 103 myname = av[0] + strlen (av[0]); 104 while (myname > av[0] && myname[-1] != '/') 105 --myname; 106 107 /* The first element of sim_open's argv is the program name. */ 108 no_args[0] = av[0]; 109#ifdef SIM_HAVE_BIENDIAN 110 no_args[1] = "-E"; 111 no_args[2] = "set-later"; 112#endif 113 114 /* FIXME: This is currently being migrated into sim_open. 115 Simulators that use functions such as sim_size() still require 116 this. */ 117 default_callback.init (&default_callback); 118 sim_set_callbacks (&default_callback); 119 120#ifdef SIM_TARGET_SWITCHES 121 ac = sim_target_parse_command_line (ac, av); 122#endif 123 124 for (i = 1; av[i]; ++i) 125 { 126 if (strcmp (av[i], "--help") == 0) 127 { 128 usage (1); 129 } 130 else if (strcmp (av[i], "--version") == 0) 131 { 132 print_version (); 133 return 0; 134 } 135 } 136 137 /* FIXME: This is currently being rewritten to have each simulator 138 do all argv processing. */ 139 140 while ((i = getopt (ac, av, "a:c:m:op:s:tv")) != EOF) 141 switch (i) 142 { 143 case 'a': 144 /* FIXME: Temporary hack. */ 145 { 146 int len = strlen (av[0]) + strlen (optarg); 147 char *argbuf = (char *) alloca (len + 2 + 50); 148 sprintf (argbuf, "%s %s", av[0], optarg); 149#ifdef SIM_HAVE_BIENDIAN 150 /* The desired endianness must be passed to sim_open. 151 The value for "set-later" is set when we know what it is. 152 -E support isn't yet part of the published interface. */ 153 strcat (argbuf, " -E set-later"); 154#endif 155 sim_argv = buildargv (argbuf); 156 } 157 break; 158#ifdef SIM_HAVE_SIMCACHE 159 case 'c': 160 sim_set_simcache_size (atoi (optarg)); 161 break; 162#endif 163 case 'm': 164 /* FIXME: Rename to sim_set_mem_size. */ 165 sim_size (atoi (optarg)); 166 break; 167#ifdef SIM_HAVE_ENVIRONMENT 168 case 'o': 169 /* Operating enironment where any signals are delivered to the 170 target. */ 171 operating_p = 1; 172 break; 173#endif 174#ifdef SIM_HAVE_PROFILE 175 case 'p': 176 sim_set_profile (atoi (optarg)); 177 break; 178 case 's': 179 sim_set_profile_size (atoi (optarg)); 180 break; 181#endif 182 case 't': 183 trace = 1; 184 break; 185 case 'v': 186 /* Things that are printed with -v are the kinds of things that 187 gcc -v prints. This is not meant to include detailed tracing 188 or debugging information, just summaries. */ 189 verbose = 1; 190 /* sim_set_verbose (1); */ 191 break; 192 /* FIXME: Quick hack, to be replaced by more general facility. */ 193 default: 194 usage (0); 195 } 196 197 ac -= optind; 198 av += optind; 199 if (ac <= 0) 200 usage (0); 201 202 name = *av; 203 prog_args = av; 204 205 if (verbose) 206 { 207 printf ("%s %s\n", myname, name); 208 } 209 210 abfd = bfd_openr (name, 0); 211 if (!abfd) 212 { 213 fprintf (stderr, "%s: can't open %s: %s\n", 214 myname, name, bfd_errmsg (bfd_get_error ())); 215 exit (1); 216 } 217 218 if (!bfd_check_format (abfd, bfd_object)) 219 { 220 fprintf (stderr, "%s: can't load %s: %s\n", 221 myname, name, bfd_errmsg (bfd_get_error ())); 222 exit (1); 223 } 224 225#ifdef SIM_HAVE_BIENDIAN 226 /* The endianness must be passed to sim_open because one may wish to 227 examine/set registers before calling sim_load [which is the other 228 place where one can determine endianness]. We previously passed the 229 endianness via global `target_byte_order' but that's not a clean 230 interface. */ 231 for (i = 1; sim_argv[i + 1] != NULL; ++i) 232 continue; 233 if (bfd_big_endian (abfd)) 234 sim_argv[i] = "big"; 235 else 236 sim_argv[i] = "little"; 237#endif 238 239 /* Ensure that any run-time initialisation that needs to be 240 performed by the simulator can occur. */ 241 sd = sim_open (SIM_OPEN_STANDALONE, &default_callback, abfd, sim_argv); 242 if (sd == 0) 243 exit (1); 244 245 if (sim_load (sd, name, abfd, 0) == SIM_RC_FAIL) 246 exit (1); 247 248 if (sim_create_inferior (sd, abfd, prog_args, NULL) == SIM_RC_FAIL) 249 exit (1); 250 251#ifdef SIM_HAVE_ENVIRONMENT 252 /* NOTE: An old simulator supporting the operating environment MUST 253 provide sim_set_trace() and not sim_trace(). That way 254 sim_stop_reason() can be used to determine any stop reason. */ 255 if (trace) 256 sim_set_trace (); 257 sigrc = 0; 258 do 259 { 260 prev_sigint = signal (SIGINT, cntrl_c); 261 sim_resume (sd, 0, sigrc); 262 signal (SIGINT, prev_sigint); 263 sim_stop_reason (sd, &reason, &sigrc); 264 } 265 while (operating_p && reason == sim_stopped && sigrc != SIGINT); 266#else 267 if (trace) 268 { 269 int done = 0; 270 prev_sigint = signal (SIGINT, cntrl_c); 271 while (!done) 272 { 273 done = sim_trace (sd); 274 } 275 signal (SIGINT, prev_sigint); 276 sim_stop_reason (sd, &reason, &sigrc); 277 } 278 else 279 { 280 prev_sigint = signal (SIGINT, cntrl_c); 281 sigrc = 0; 282 sim_resume (sd, 0, sigrc); 283 signal (SIGINT, prev_sigint); 284 sim_stop_reason (sd, &reason, &sigrc); 285 } 286#endif 287 288 if (verbose) 289 sim_info (sd, 0); 290 sim_close (sd, 0); 291 292 /* If reason is sim_exited, then sigrc holds the exit code which we want 293 to return. If reason is sim_stopped or sim_signalled, then sigrc holds 294 the signal that the simulator received; we want to return that to 295 indicate failure. */ 296 297 /* Why did we stop? */ 298 switch (reason) 299 { 300 case sim_signalled: 301 case sim_stopped: 302 if (sigrc != 0) 303 fprintf (stderr, "program stopped with signal %d.\n", sigrc); 304 break; 305 306 case sim_exited: 307 break; 308 309 case sim_running: 310 case sim_polling: /* These indicate a serious problem. */ 311 abort (); 312 break; 313 314 } 315 316 return sigrc; 317} 318 319static void 320usage (int help) 321{ 322 FILE *stream = help ? stdout : stderr; 323 324 fprintf (stream, "Usage: %s [options] program [program args]\n", myname); 325 fprintf (stream, "Options:\n"); 326 fprintf (stream, "-a args Pass `args' to simulator.\n"); 327#ifdef SIM_HAVE_SIMCACHE 328 fprintf (stream, "-c size Set simulator cache size to `size'.\n"); 329#endif 330 fprintf (stream, "-m size Set memory size of simulator, in bytes.\n"); 331#ifdef SIM_HAVE_ENVIRONMENT 332 fprintf (stream, "-o Select operating (kernel) environment.\n"); 333#endif 334#ifdef SIM_HAVE_PROFILE 335 fprintf (stream, "-p freq Set profiling frequency.\n"); 336 fprintf (stream, "-s size Set profiling size.\n"); 337#endif 338 fprintf (stream, "-t Perform instruction tracing.\n"); 339 fprintf (stream, " Note: Very few simulators support tracing.\n"); 340 fprintf (stream, "-v Verbose output.\n"); 341 fprintf (stream, "\n"); 342 fprintf (stream, "program args Arguments to pass to simulated program.\n"); 343 fprintf (stream, " Note: Very few simulators support this.\n"); 344#ifdef SIM_TARGET_SWITCHES 345 fprintf (stream, "\nTarget specific options:\n"); 346 sim_target_display_usage (help); 347#endif 348 349 if (help && REPORT_BUGS_TO[0]) 350 printf ("Report bugs to %s\n", REPORT_BUGS_TO); 351 352 exit (help ? 0 : 1); 353} 354 355static void 356print_version () 357{ 358 printf ("GNU simulator %s%s\n", PKGVERSION, version); 359} 360