| 1 | /* Top level stuff for GDB, the GNU debugger. |
| 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
| 3 | 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
| 4 | Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 21 | Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | #include "defs.h" |
| 24 | #include "top.h" |
| 25 | #include "target.h" |
| 26 | #include "inferior.h" |
| 27 | #include "symfile.h" |
| 28 | #include "gdbcore.h" |
| 29 | |
| 30 | #include "getopt.h" |
| 31 | |
| 32 | #include <sys/types.h> |
| 33 | #include "gdb_stat.h" |
| 34 | #include <ctype.h> |
| 35 | |
| 36 | #include "gdb_string.h" |
| 37 | #include "event-loop.h" |
| 38 | #include "ui-out.h" |
| 39 | |
| 40 | /* If nonzero, display time usage both at startup and for each command. */ |
| 41 | |
| 42 | int display_time; |
| 43 | |
| 44 | /* If nonzero, display space usage both at startup and for each command. */ |
| 45 | |
| 46 | int display_space; |
| 47 | |
| 48 | /* Whether this is the async version or not. The async version is |
| 49 | invoked on the command line with the -nw --async options. In this |
| 50 | version, the usual command_loop is substituted by and event loop which |
| 51 | processes UI events asynchronously. */ |
| 52 | int event_loop_p = 1; |
| 53 | |
| 54 | /* Has an interpreter been specified and if so, which. */ |
| 55 | char *interpreter_p; |
| 56 | |
| 57 | /* Whether this is the command line version or not */ |
| 58 | int tui_version = 0; |
| 59 | |
| 60 | /* Whether xdb commands will be handled */ |
| 61 | int xdb_commands = 0; |
| 62 | |
| 63 | /* Whether dbx commands will be handled */ |
| 64 | int dbx_commands = 0; |
| 65 | |
| 66 | struct ui_file *gdb_stdout; |
| 67 | struct ui_file *gdb_stderr; |
| 68 | struct ui_file *gdb_stdlog; |
| 69 | struct ui_file *gdb_stdtarg; |
| 70 | |
| 71 | /* Used to initialize error() - defined in utils.c */ |
| 72 | |
| 73 | extern void error_init (void); |
| 74 | |
| 75 | /* Whether to enable writing into executable and core files */ |
| 76 | extern int write_files; |
| 77 | |
| 78 | static void print_gdb_help (struct ui_file *); |
| 79 | |
| 80 | /* These two are used to set the external editor commands when gdb is farming |
| 81 | out files to be edited by another program. */ |
| 82 | |
| 83 | extern char *external_editor_command; |
| 84 | |
| 85 | /* Call command_loop. If it happens to return, pass that through as a |
| 86 | non-zero return status. */ |
| 87 | |
| 88 | static int |
| 89 | captured_command_loop (void *data) |
| 90 | { |
| 91 | if (command_loop_hook == NULL) |
| 92 | command_loop (); |
| 93 | else |
| 94 | command_loop_hook (); |
| 95 | /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton |
| 96 | would clean things up (restoring the cleanup chain) to the state |
| 97 | they were just prior to the call. Technically, this means that |
| 98 | the do_cleanups() below is redundant. Unfortunately, many FUNCs |
| 99 | are not that well behaved. do_cleanups should either be replaced |
| 100 | with a do_cleanups call (to cover the problem) or an assertion |
| 101 | check to detect bad FUNCs code. */ |
| 102 | do_cleanups (ALL_CLEANUPS); |
| 103 | /* If the command_loop returned, normally (rather than threw an |
| 104 | error) we try to quit. If the quit is aborted, catch_errors() |
| 105 | which called this catch the signal and restart the command |
| 106 | loop. */ |
| 107 | quit_command (NULL, instream == stdin); |
| 108 | return 1; |
| 109 | } |
| 110 | |
| 111 | struct captured_main_args |
| 112 | { |
| 113 | int argc; |
| 114 | char **argv; |
| 115 | }; |
| 116 | |
| 117 | static int |
| 118 | captured_main (void *data) |
| 119 | { |
| 120 | struct captured_main_args *context = data; |
| 121 | int argc = context->argc; |
| 122 | char **argv = context->argv; |
| 123 | int count; |
| 124 | static int quiet = 0; |
| 125 | static int batch = 0; |
| 126 | static int set_args = 0; |
| 127 | |
| 128 | /* Pointers to various arguments from command line. */ |
| 129 | char *symarg = NULL; |
| 130 | char *execarg = NULL; |
| 131 | char *corearg = NULL; |
| 132 | char *cdarg = NULL; |
| 133 | char *ttyarg = NULL; |
| 134 | |
| 135 | /* These are static so that we can take their address in an initializer. */ |
| 136 | static int print_help; |
| 137 | static int print_version; |
| 138 | |
| 139 | /* Pointers to all arguments of --command option. */ |
| 140 | char **cmdarg; |
| 141 | /* Allocated size of cmdarg. */ |
| 142 | int cmdsize; |
| 143 | /* Number of elements of cmdarg used. */ |
| 144 | int ncmd; |
| 145 | |
| 146 | /* Indices of all arguments of --directory option. */ |
| 147 | char **dirarg; |
| 148 | /* Allocated size. */ |
| 149 | int dirsize; |
| 150 | /* Number of elements used. */ |
| 151 | int ndir; |
| 152 | |
| 153 | struct stat homebuf, cwdbuf; |
| 154 | char *homedir, *homeinit; |
| 155 | |
| 156 | register int i; |
| 157 | |
| 158 | long time_at_startup = get_run_time (); |
| 159 | |
| 160 | START_PROGRESS (argv[0], 0); |
| 161 | |
| 162 | #ifdef MPW |
| 163 | /* Do all Mac-specific setup. */ |
| 164 | mac_init (); |
| 165 | #endif /* MPW */ |
| 166 | |
| 167 | /* This needs to happen before the first use of malloc. */ |
| 168 | init_malloc ((PTR) NULL); |
| 169 | |
| 170 | #if defined (ALIGN_STACK_ON_STARTUP) |
| 171 | i = (int) &count & 0x3; |
| 172 | if (i != 0) |
| 173 | alloca (4 - i); |
| 174 | #endif |
| 175 | |
| 176 | cmdsize = 1; |
| 177 | cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg)); |
| 178 | ncmd = 0; |
| 179 | dirsize = 1; |
| 180 | dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg)); |
| 181 | ndir = 0; |
| 182 | |
| 183 | quit_flag = 0; |
| 184 | line = (char *) xmalloc (linesize); |
| 185 | line[0] = '\0'; /* Terminate saved (now empty) cmd line */ |
| 186 | instream = stdin; |
| 187 | |
| 188 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); |
| 189 | current_directory = gdb_dirbuf; |
| 190 | |
| 191 | gdb_stdout = stdio_fileopen (stdout); |
| 192 | gdb_stderr = stdio_fileopen (stderr); |
| 193 | gdb_stdlog = gdb_stderr; /* for moment */ |
| 194 | gdb_stdtarg = gdb_stderr; /* for moment */ |
| 195 | |
| 196 | /* initialize error() */ |
| 197 | error_init (); |
| 198 | |
| 199 | /* Parse arguments and options. */ |
| 200 | { |
| 201 | int c; |
| 202 | /* When var field is 0, use flag field to record the equivalent |
| 203 | short option (or arbitrary numbers starting at 10 for those |
| 204 | with no equivalent). */ |
| 205 | static struct option long_options[] = |
| 206 | { |
| 207 | {"async", no_argument, &event_loop_p, 1}, |
| 208 | {"noasync", no_argument, &event_loop_p, 0}, |
| 209 | #if defined(TUI) |
| 210 | {"tui", no_argument, &tui_version, 1}, |
| 211 | #endif |
| 212 | {"xdb", no_argument, &xdb_commands, 1}, |
| 213 | {"dbx", no_argument, &dbx_commands, 1}, |
| 214 | {"readnow", no_argument, &readnow_symbol_files, 1}, |
| 215 | {"r", no_argument, &readnow_symbol_files, 1}, |
| 216 | {"mapped", no_argument, &mapped_symbol_files, 1}, |
| 217 | {"m", no_argument, &mapped_symbol_files, 1}, |
| 218 | {"quiet", no_argument, &quiet, 1}, |
| 219 | {"q", no_argument, &quiet, 1}, |
| 220 | {"silent", no_argument, &quiet, 1}, |
| 221 | {"nx", no_argument, &inhibit_gdbinit, 1}, |
| 222 | {"n", no_argument, &inhibit_gdbinit, 1}, |
| 223 | {"batch", no_argument, &batch, 1}, |
| 224 | {"epoch", no_argument, &epoch_interface, 1}, |
| 225 | |
| 226 | /* This is a synonym for "--annotate=1". --annotate is now preferred, |
| 227 | but keep this here for a long time because people will be running |
| 228 | emacses which use --fullname. */ |
| 229 | {"fullname", no_argument, 0, 'f'}, |
| 230 | {"f", no_argument, 0, 'f'}, |
| 231 | |
| 232 | {"annotate", required_argument, 0, 12}, |
| 233 | {"help", no_argument, &print_help, 1}, |
| 234 | {"se", required_argument, 0, 10}, |
| 235 | {"symbols", required_argument, 0, 's'}, |
| 236 | {"s", required_argument, 0, 's'}, |
| 237 | {"exec", required_argument, 0, 'e'}, |
| 238 | {"e", required_argument, 0, 'e'}, |
| 239 | {"core", required_argument, 0, 'c'}, |
| 240 | {"c", required_argument, 0, 'c'}, |
| 241 | {"pid", required_argument, 0, 'p'}, |
| 242 | {"p", required_argument, 0, 'p'}, |
| 243 | {"command", required_argument, 0, 'x'}, |
| 244 | {"version", no_argument, &print_version, 1}, |
| 245 | {"x", required_argument, 0, 'x'}, |
| 246 | #ifdef GDBTK |
| 247 | {"tclcommand", required_argument, 0, 'z'}, |
| 248 | {"enable-external-editor", no_argument, 0, 'y'}, |
| 249 | {"editor-command", required_argument, 0, 'w'}, |
| 250 | #endif |
| 251 | {"ui", required_argument, 0, 'i'}, |
| 252 | {"interpreter", required_argument, 0, 'i'}, |
| 253 | {"i", required_argument, 0, 'i'}, |
| 254 | {"directory", required_argument, 0, 'd'}, |
| 255 | {"d", required_argument, 0, 'd'}, |
| 256 | {"cd", required_argument, 0, 11}, |
| 257 | {"tty", required_argument, 0, 't'}, |
| 258 | {"baud", required_argument, 0, 'b'}, |
| 259 | {"b", required_argument, 0, 'b'}, |
| 260 | {"nw", no_argument, &use_windows, 0}, |
| 261 | {"nowindows", no_argument, &use_windows, 0}, |
| 262 | {"w", no_argument, &use_windows, 1}, |
| 263 | {"windows", no_argument, &use_windows, 1}, |
| 264 | {"statistics", no_argument, 0, 13}, |
| 265 | {"write", no_argument, &write_files, 1}, |
| 266 | {"args", no_argument, &set_args, 1}, |
| 267 | /* Allow machine descriptions to add more options... */ |
| 268 | #ifdef ADDITIONAL_OPTIONS |
| 269 | ADDITIONAL_OPTIONS |
| 270 | #endif |
| 271 | {0, no_argument, 0, 0} |
| 272 | }; |
| 273 | |
| 274 | while (1) |
| 275 | { |
| 276 | int option_index; |
| 277 | |
| 278 | c = getopt_long_only (argc, argv, "", |
| 279 | long_options, &option_index); |
| 280 | if (c == EOF || set_args) |
| 281 | break; |
| 282 | |
| 283 | /* Long option that takes an argument. */ |
| 284 | if (c == 0 && long_options[option_index].flag == 0) |
| 285 | c = long_options[option_index].val; |
| 286 | |
| 287 | switch (c) |
| 288 | { |
| 289 | case 0: |
| 290 | /* Long option that just sets a flag. */ |
| 291 | break; |
| 292 | case 10: |
| 293 | symarg = optarg; |
| 294 | execarg = optarg; |
| 295 | break; |
| 296 | case 11: |
| 297 | cdarg = optarg; |
| 298 | break; |
| 299 | case 12: |
| 300 | /* FIXME: what if the syntax is wrong (e.g. not digits)? */ |
| 301 | annotation_level = atoi (optarg); |
| 302 | break; |
| 303 | case 13: |
| 304 | /* Enable the display of both time and space usage. */ |
| 305 | display_time = 1; |
| 306 | display_space = 1; |
| 307 | break; |
| 308 | case 'f': |
| 309 | annotation_level = 1; |
| 310 | /* We have probably been invoked from emacs. Disable window interface. */ |
| 311 | use_windows = 0; |
| 312 | break; |
| 313 | case 's': |
| 314 | symarg = optarg; |
| 315 | break; |
| 316 | case 'e': |
| 317 | execarg = optarg; |
| 318 | break; |
| 319 | case 'c': |
| 320 | corearg = optarg; |
| 321 | break; |
| 322 | case 'p': |
| 323 | /* "corearg" is shared by "--core" and "--pid" */ |
| 324 | corearg = optarg; |
| 325 | break; |
| 326 | case 'x': |
| 327 | cmdarg[ncmd++] = optarg; |
| 328 | if (ncmd >= cmdsize) |
| 329 | { |
| 330 | cmdsize *= 2; |
| 331 | cmdarg = (char **) xrealloc ((char *) cmdarg, |
| 332 | cmdsize * sizeof (*cmdarg)); |
| 333 | } |
| 334 | break; |
| 335 | #ifdef GDBTK |
| 336 | case 'z': |
| 337 | { |
| 338 | extern int gdbtk_test (char *); |
| 339 | if (!gdbtk_test (optarg)) |
| 340 | { |
| 341 | fprintf_unfiltered (gdb_stderr, "%s: unable to load tclcommand file \"%s\"", |
| 342 | argv[0], optarg); |
| 343 | exit (1); |
| 344 | } |
| 345 | break; |
| 346 | } |
| 347 | case 'y': |
| 348 | /* Backwards compatibility only. */ |
| 349 | break; |
| 350 | case 'w': |
| 351 | { |
| 352 | external_editor_command = xstrdup (optarg); |
| 353 | break; |
| 354 | } |
| 355 | #endif /* GDBTK */ |
| 356 | case 'i': |
| 357 | interpreter_p = optarg; |
| 358 | break; |
| 359 | case 'd': |
| 360 | dirarg[ndir++] = optarg; |
| 361 | if (ndir >= dirsize) |
| 362 | { |
| 363 | dirsize *= 2; |
| 364 | dirarg = (char **) xrealloc ((char *) dirarg, |
| 365 | dirsize * sizeof (*dirarg)); |
| 366 | } |
| 367 | break; |
| 368 | case 't': |
| 369 | ttyarg = optarg; |
| 370 | break; |
| 371 | case 'q': |
| 372 | quiet = 1; |
| 373 | break; |
| 374 | case 'b': |
| 375 | { |
| 376 | int i; |
| 377 | char *p; |
| 378 | |
| 379 | i = strtol (optarg, &p, 0); |
| 380 | if (i == 0 && p == optarg) |
| 381 | |
| 382 | /* Don't use *_filtered or warning() (which relies on |
| 383 | current_target) until after initialize_all_files(). */ |
| 384 | |
| 385 | fprintf_unfiltered |
| 386 | (gdb_stderr, |
| 387 | "warning: could not set baud rate to `%s'.\n", optarg); |
| 388 | else |
| 389 | baud_rate = i; |
| 390 | } |
| 391 | case 'l': |
| 392 | { |
| 393 | int i; |
| 394 | char *p; |
| 395 | |
| 396 | i = strtol (optarg, &p, 0); |
| 397 | if (i == 0 && p == optarg) |
| 398 | |
| 399 | /* Don't use *_filtered or warning() (which relies on |
| 400 | current_target) until after initialize_all_files(). */ |
| 401 | |
| 402 | fprintf_unfiltered |
| 403 | (gdb_stderr, |
| 404 | "warning: could not set timeout limit to `%s'.\n", optarg); |
| 405 | else |
| 406 | remote_timeout = i; |
| 407 | } |
| 408 | break; |
| 409 | |
| 410 | #ifdef ADDITIONAL_OPTION_CASES |
| 411 | ADDITIONAL_OPTION_CASES |
| 412 | #endif |
| 413 | case '?': |
| 414 | fprintf_unfiltered (gdb_stderr, |
| 415 | "Use `%s --help' for a complete list of options.\n", |
| 416 | argv[0]); |
| 417 | exit (1); |
| 418 | } |
| 419 | } |
| 420 | |
| 421 | /* If --help or --version, disable window interface. */ |
| 422 | if (print_help || print_version) |
| 423 | { |
| 424 | use_windows = 0; |
| 425 | #ifdef TUI |
| 426 | /* Disable the TUI as well. */ |
| 427 | tui_version = 0; |
| 428 | #endif |
| 429 | } |
| 430 | |
| 431 | #ifdef TUI |
| 432 | /* An explicit --tui flag overrides the default UI, which is the |
| 433 | window system. */ |
| 434 | if (tui_version) |
| 435 | use_windows = 0; |
| 436 | #endif |
| 437 | |
| 438 | if (set_args) |
| 439 | { |
| 440 | /* The remaining options are the command-line options for the |
| 441 | inferior. The first one is the sym/exec file, and the rest |
| 442 | are arguments. */ |
| 443 | if (optind >= argc) |
| 444 | { |
| 445 | fprintf_unfiltered (gdb_stderr, |
| 446 | "%s: `--args' specified but no program specified\n", |
| 447 | argv[0]); |
| 448 | exit (1); |
| 449 | } |
| 450 | symarg = argv[optind]; |
| 451 | execarg = argv[optind]; |
| 452 | ++optind; |
| 453 | set_inferior_args_vector (argc - optind, &argv[optind]); |
| 454 | } |
| 455 | else |
| 456 | { |
| 457 | /* OK, that's all the options. The other arguments are filenames. */ |
| 458 | count = 0; |
| 459 | for (; optind < argc; optind++) |
| 460 | switch (++count) |
| 461 | { |
| 462 | case 1: |
| 463 | symarg = argv[optind]; |
| 464 | execarg = argv[optind]; |
| 465 | break; |
| 466 | case 2: |
| 467 | /* The documentation says this can be a "ProcID" as well. |
| 468 | We will try it as both a corefile and a pid. */ |
| 469 | corearg = argv[optind]; |
| 470 | break; |
| 471 | case 3: |
| 472 | fprintf_unfiltered (gdb_stderr, |
| 473 | "Excess command line arguments ignored. (%s%s)\n", |
| 474 | argv[optind], (optind == argc - 1) ? "" : " ..."); |
| 475 | break; |
| 476 | } |
| 477 | } |
| 478 | if (batch) |
| 479 | quiet = 1; |
| 480 | } |
| 481 | |
| 482 | /* Initialize all files. Give the interpreter a chance to take |
| 483 | control of the console via the init_ui_hook()) */ |
| 484 | gdb_init (argv[0]); |
| 485 | |
| 486 | /* Do these (and anything which might call wrap_here or *_filtered) |
| 487 | after initialize_all_files. */ |
| 488 | if (print_version) |
| 489 | { |
| 490 | print_gdb_version (gdb_stdout); |
| 491 | wrap_here (""); |
| 492 | printf_filtered ("\n"); |
| 493 | exit (0); |
| 494 | } |
| 495 | |
| 496 | if (print_help) |
| 497 | { |
| 498 | print_gdb_help (gdb_stdout); |
| 499 | fputs_unfiltered ("\n", gdb_stdout); |
| 500 | exit (0); |
| 501 | } |
| 502 | |
| 503 | if (!quiet) |
| 504 | { |
| 505 | /* Print all the junk at the top, with trailing "..." if we are about |
| 506 | to read a symbol file (possibly slowly). */ |
| 507 | print_gdb_version (gdb_stdout); |
| 508 | if (symarg) |
| 509 | printf_filtered (".."); |
| 510 | wrap_here (""); |
| 511 | gdb_flush (gdb_stdout); /* Force to screen during slow operations */ |
| 512 | } |
| 513 | |
| 514 | error_pre_print = "\n\n"; |
| 515 | quit_pre_print = error_pre_print; |
| 516 | |
| 517 | /* We may get more than one warning, don't double space all of them... */ |
| 518 | warning_pre_print = "\nwarning: "; |
| 519 | |
| 520 | /* Read and execute $HOME/.gdbinit file, if it exists. This is done |
| 521 | *before* all the command line arguments are processed; it sets |
| 522 | global parameters, which are independent of what file you are |
| 523 | debugging or what directory you are in. */ |
| 524 | homedir = getenv ("HOME"); |
| 525 | if (homedir) |
| 526 | { |
| 527 | homeinit = (char *) alloca (strlen (homedir) + |
| 528 | strlen (gdbinit) + 10); |
| 529 | strcpy (homeinit, homedir); |
| 530 | strcat (homeinit, "/"); |
| 531 | strcat (homeinit, gdbinit); |
| 532 | |
| 533 | if (!inhibit_gdbinit) |
| 534 | { |
| 535 | catch_command_errors (source_command, homeinit, 0, RETURN_MASK_ALL); |
| 536 | } |
| 537 | |
| 538 | /* Do stats; no need to do them elsewhere since we'll only |
| 539 | need them if homedir is set. Make sure that they are |
| 540 | zero in case one of them fails (this guarantees that they |
| 541 | won't match if either exists). */ |
| 542 | |
| 543 | memset (&homebuf, 0, sizeof (struct stat)); |
| 544 | memset (&cwdbuf, 0, sizeof (struct stat)); |
| 545 | |
| 546 | stat (homeinit, &homebuf); |
| 547 | stat (gdbinit, &cwdbuf); /* We'll only need this if |
| 548 | homedir was set. */ |
| 549 | } |
| 550 | |
| 551 | /* Now perform all the actions indicated by the arguments. */ |
| 552 | if (cdarg != NULL) |
| 553 | { |
| 554 | catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL); |
| 555 | } |
| 556 | |
| 557 | for (i = 0; i < ndir; i++) |
| 558 | catch_command_errors (directory_command, dirarg[i], 0, RETURN_MASK_ALL); |
| 559 | xfree (dirarg); |
| 560 | |
| 561 | if (execarg != NULL |
| 562 | && symarg != NULL |
| 563 | && STREQ (execarg, symarg)) |
| 564 | { |
| 565 | /* The exec file and the symbol-file are the same. If we can't |
| 566 | open it, better only print one error message. |
| 567 | catch_command_errors returns non-zero on success! */ |
| 568 | if (catch_command_errors (exec_file_attach, execarg, !batch, RETURN_MASK_ALL)) |
| 569 | catch_command_errors (symbol_file_add_main, symarg, 0, RETURN_MASK_ALL); |
| 570 | } |
| 571 | else |
| 572 | { |
| 573 | if (execarg != NULL) |
| 574 | catch_command_errors (exec_file_attach, execarg, !batch, RETURN_MASK_ALL); |
| 575 | if (symarg != NULL) |
| 576 | catch_command_errors (symbol_file_add_main, symarg, 0, RETURN_MASK_ALL); |
| 577 | } |
| 578 | |
| 579 | /* After the symbol file has been read, print a newline to get us |
| 580 | beyond the copyright line... But errors should still set off |
| 581 | the error message with a (single) blank line. */ |
| 582 | if (!quiet) |
| 583 | printf_filtered ("\n"); |
| 584 | error_pre_print = "\n"; |
| 585 | quit_pre_print = error_pre_print; |
| 586 | warning_pre_print = "\nwarning: "; |
| 587 | |
| 588 | if (corearg != NULL) |
| 589 | { |
| 590 | /* corearg may be either a corefile or a pid. |
| 591 | If its first character is a digit, try attach first |
| 592 | and then corefile. Otherwise try corefile first. */ |
| 593 | |
| 594 | if (isdigit (corearg[0])) |
| 595 | { |
| 596 | if (catch_command_errors (attach_command, corearg, |
| 597 | !batch, RETURN_MASK_ALL) == 0) |
| 598 | catch_command_errors (core_file_command, corearg, |
| 599 | !batch, RETURN_MASK_ALL); |
| 600 | } |
| 601 | else /* Can't be a pid, better be a corefile. */ |
| 602 | catch_command_errors (core_file_command, corearg, |
| 603 | !batch, RETURN_MASK_ALL); |
| 604 | } |
| 605 | |
| 606 | if (ttyarg != NULL) |
| 607 | catch_command_errors (tty_command, ttyarg, !batch, RETURN_MASK_ALL); |
| 608 | |
| 609 | #ifdef ADDITIONAL_OPTION_HANDLER |
| 610 | ADDITIONAL_OPTION_HANDLER; |
| 611 | #endif |
| 612 | |
| 613 | /* Error messages should no longer be distinguished with extra output. */ |
| 614 | error_pre_print = NULL; |
| 615 | quit_pre_print = NULL; |
| 616 | warning_pre_print = "warning: "; |
| 617 | |
| 618 | /* Read the .gdbinit file in the current directory, *if* it isn't |
| 619 | the same as the $HOME/.gdbinit file (it should exist, also). */ |
| 620 | |
| 621 | if (!homedir |
| 622 | || memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat))) |
| 623 | if (!inhibit_gdbinit) |
| 624 | { |
| 625 | catch_command_errors (source_command, gdbinit, 0, RETURN_MASK_ALL); |
| 626 | } |
| 627 | |
| 628 | for (i = 0; i < ncmd; i++) |
| 629 | { |
| 630 | #if 0 |
| 631 | /* NOTE: cagney/1999-11-03: SET_TOP_LEVEL() was a macro that |
| 632 | expanded into a call to setjmp(). */ |
| 633 | if (!SET_TOP_LEVEL ()) /* NB: This is #if 0'd out */ |
| 634 | { |
| 635 | /* NOTE: I am commenting this out, because it is not clear |
| 636 | where this feature is used. It is very old and |
| 637 | undocumented. ezannoni: 1999-05-04 */ |
| 638 | #if 0 |
| 639 | if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0') |
| 640 | read_command_file (stdin); |
| 641 | else |
| 642 | #endif |
| 643 | source_command (cmdarg[i], !batch); |
| 644 | do_cleanups (ALL_CLEANUPS); |
| 645 | } |
| 646 | #endif |
| 647 | catch_command_errors (source_command, cmdarg[i], !batch, RETURN_MASK_ALL); |
| 648 | } |
| 649 | xfree (cmdarg); |
| 650 | |
| 651 | /* Read in the old history after all the command files have been read. */ |
| 652 | init_history (); |
| 653 | |
| 654 | if (batch) |
| 655 | { |
| 656 | /* We have hit the end of the batch file. */ |
| 657 | exit (0); |
| 658 | } |
| 659 | |
| 660 | /* Do any host- or target-specific hacks. This is used for i960 targets |
| 661 | to force the user to set a nindy target and spec its parameters. */ |
| 662 | |
| 663 | #ifdef BEFORE_MAIN_LOOP_HOOK |
| 664 | BEFORE_MAIN_LOOP_HOOK; |
| 665 | #endif |
| 666 | |
| 667 | END_PROGRESS (argv[0]); |
| 668 | |
| 669 | /* Show time and/or space usage. */ |
| 670 | |
| 671 | if (display_time) |
| 672 | { |
| 673 | long init_time = get_run_time () - time_at_startup; |
| 674 | |
| 675 | printf_unfiltered ("Startup time: %ld.%06ld\n", |
| 676 | init_time / 1000000, init_time % 1000000); |
| 677 | } |
| 678 | |
| 679 | if (display_space) |
| 680 | { |
| 681 | #ifdef HAVE_SBRK |
| 682 | extern char **environ; |
| 683 | char *lim = (char *) sbrk (0); |
| 684 | |
| 685 | printf_unfiltered ("Startup size: data size %ld\n", |
| 686 | (long) (lim - (char *) &environ)); |
| 687 | #endif |
| 688 | } |
| 689 | |
| 690 | #if 0 |
| 691 | /* FIXME: cagney/1999-11-06: The original main loop was like: */ |
| 692 | while (1) |
| 693 | { |
| 694 | if (!SET_TOP_LEVEL ()) |
| 695 | { |
| 696 | do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */ |
| 697 | /* GUIs generally have their own command loop, mainloop, or whatever. |
| 698 | This is a good place to gain control because many error |
| 699 | conditions will end up here via longjmp(). */ |
| 700 | if (command_loop_hook) |
| 701 | command_loop_hook (); |
| 702 | else |
| 703 | command_loop (); |
| 704 | quit_command ((char *) 0, instream == stdin); |
| 705 | } |
| 706 | } |
| 707 | /* NOTE: If the command_loop() returned normally, the loop would |
| 708 | attempt to exit by calling the function quit_command(). That |
| 709 | function would either call exit() or throw an error returning |
| 710 | control to SET_TOP_LEVEL. */ |
| 711 | /* NOTE: The function do_cleanups() was called once each time round |
| 712 | the loop. The usefulness of the call isn't clear. If an error |
| 713 | was thrown, everything would have already been cleaned up. If |
| 714 | command_loop() returned normally and quit_command() was called, |
| 715 | either exit() or error() (again cleaning up) would be called. */ |
| 716 | #endif |
| 717 | /* NOTE: cagney/1999-11-07: There is probably no reason for not |
| 718 | moving this loop and the code found in captured_command_loop() |
| 719 | into the command_loop() proper. The main thing holding back that |
| 720 | change - SET_TOP_LEVEL() - has been eliminated. */ |
| 721 | while (1) |
| 722 | { |
| 723 | catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL); |
| 724 | } |
| 725 | /* No exit -- exit is through quit_command. */ |
| 726 | } |
| 727 | |
| 728 | int |
| 729 | main (int argc, char **argv) |
| 730 | { |
| 731 | struct captured_main_args args; |
| 732 | args.argc = argc; |
| 733 | args.argv = argv; |
| 734 | catch_errors (captured_main, &args, "", RETURN_MASK_ALL); |
| 735 | return 0; |
| 736 | } |
| 737 | |
| 738 | |
| 739 | /* Don't use *_filtered for printing help. We don't want to prompt |
| 740 | for continue no matter how small the screen or how much we're going |
| 741 | to print. */ |
| 742 | |
| 743 | static void |
| 744 | print_gdb_help (struct ui_file *stream) |
| 745 | { |
| 746 | fputs_unfiltered ("\ |
| 747 | This is the GNU debugger. Usage:\n\n\ |
| 748 | gdb [options] [executable-file [core-file or process-id]]\n\ |
| 749 | gdb [options] --args executable-file [inferior-arguments ...]\n\n\ |
| 750 | Options:\n\n\ |
| 751 | ", stream); |
| 752 | fputs_unfiltered ("\ |
| 753 | --args Arguments after executable-file are passed to inferior\n\ |
| 754 | ", stream); |
| 755 | fputs_unfiltered ("\ |
| 756 | --[no]async Enable (disable) asynchronous version of CLI\n\ |
| 757 | ", stream); |
| 758 | fputs_unfiltered ("\ |
| 759 | -b BAUDRATE Set serial port baud rate used for remote debugging.\n\ |
| 760 | --batch Exit after processing options.\n\ |
| 761 | --cd=DIR Change current directory to DIR.\n\ |
| 762 | --command=FILE Execute GDB commands from FILE.\n\ |
| 763 | --core=COREFILE Analyze the core dump COREFILE.\n\ |
| 764 | --pid=PID Attach to running process PID.\n\ |
| 765 | ", stream); |
| 766 | fputs_unfiltered ("\ |
| 767 | --dbx DBX compatibility mode.\n\ |
| 768 | --directory=DIR Search for source files in DIR.\n\ |
| 769 | --epoch Output information used by epoch emacs-GDB interface.\n\ |
| 770 | --exec=EXECFILE Use EXECFILE as the executable.\n\ |
| 771 | --fullname Output information used by emacs-GDB interface.\n\ |
| 772 | --help Print this message.\n\ |
| 773 | ", stream); |
| 774 | fputs_unfiltered ("\ |
| 775 | --interpreter=INTERP\n\ |
| 776 | Select a specific interpreter / user interface\n\ |
| 777 | ", stream); |
| 778 | fputs_unfiltered ("\ |
| 779 | --mapped Use mapped symbol files if supported on this system.\n\ |
| 780 | --nw Do not use a window interface.\n\ |
| 781 | --nx Do not read ", stream); |
| 782 | fputs_unfiltered (gdbinit, stream); |
| 783 | fputs_unfiltered (" file.\n\ |
| 784 | --quiet Do not print version number on startup.\n\ |
| 785 | --readnow Fully read symbol files on first access.\n\ |
| 786 | ", stream); |
| 787 | fputs_unfiltered ("\ |
| 788 | --se=FILE Use FILE as symbol file and executable file.\n\ |
| 789 | --symbols=SYMFILE Read symbols from SYMFILE.\n\ |
| 790 | --tty=TTY Use TTY for input/output by the program being debugged.\n\ |
| 791 | ", stream); |
| 792 | #if defined(TUI) |
| 793 | fputs_unfiltered ("\ |
| 794 | --tui Use a terminal user interface.\n\ |
| 795 | ", stream); |
| 796 | #endif |
| 797 | fputs_unfiltered ("\ |
| 798 | --version Print version information and then exit.\n\ |
| 799 | -w Use a window interface.\n\ |
| 800 | --write Set writing into executable and core files.\n\ |
| 801 | --xdb XDB compatibility mode.\n\ |
| 802 | ", stream); |
| 803 | #ifdef ADDITIONAL_OPTION_HELP |
| 804 | fputs_unfiltered (ADDITIONAL_OPTION_HELP, stream); |
| 805 | #endif |
| 806 | fputs_unfiltered ("\n\ |
| 807 | For more information, type \"help\" from within GDB, or consult the\n\ |
| 808 | GDB manual (available as on-line info or a printed manual).\n\ |
| 809 | Report bugs to \"bug-gdb@gnu.org\".\ |
| 810 | ", stream); |
| 811 | } |