| 1 | /* Top level stuff for GDB, the GNU debugger. |
| 2 | Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 1999 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "top.h" |
| 24 | #include "target.h" |
| 25 | #include "inferior.h" |
| 26 | #include "call-cmds.h" |
| 27 | |
| 28 | #include "getopt.h" |
| 29 | |
| 30 | #include <sys/types.h> |
| 31 | #include "gdb_stat.h" |
| 32 | #include <ctype.h> |
| 33 | |
| 34 | #include "gdb_string.h" |
| 35 | #include "event-loop.h" |
| 36 | #if defined (TUI) || defined (GDBTK) |
| 37 | /* FIXME: cagney/2000-01-31: This #include is to allow older code such |
| 38 | as that found in the TUI to continue to build. */ |
| 39 | #include "tui/tui-file.h" |
| 40 | #endif |
| 41 | |
| 42 | /* If nonzero, display time usage both at startup and for each command. */ |
| 43 | |
| 44 | int display_time; |
| 45 | |
| 46 | /* If nonzero, display space usage both at startup and for each command. */ |
| 47 | |
| 48 | int display_space; |
| 49 | |
| 50 | /* Whether this is the async version or not. The async version is |
| 51 | invoked on the command line with the -nw --async options. In this |
| 52 | version, the usual command_loop is substituted by and event loop which |
| 53 | processes UI events asynchronously. */ |
| 54 | int event_loop_p = 1; |
| 55 | |
| 56 | /* Whether this is the command line version or not */ |
| 57 | int tui_version = 0; |
| 58 | |
| 59 | /* Whether xdb commands will be handled */ |
| 60 | int xdb_commands = 0; |
| 61 | |
| 62 | /* Whether dbx commands will be handled */ |
| 63 | int dbx_commands = 0; |
| 64 | |
| 65 | GDB_FILE *gdb_stdout; |
| 66 | GDB_FILE *gdb_stderr; |
| 67 | GDB_FILE *gdb_stdlog; |
| 68 | GDB_FILE *gdb_stdtarg; |
| 69 | |
| 70 | /* Used to initialize error() - defined in utils.c */ |
| 71 | |
| 72 | extern void error_init (void); |
| 73 | |
| 74 | /* Whether to enable writing into executable and core files */ |
| 75 | extern int write_files; |
| 76 | |
| 77 | static void print_gdb_help PARAMS ((GDB_FILE *)); |
| 78 | |
| 79 | /* These two are used to set the external editor commands when gdb is farming |
| 80 | out files to be edited by another program. */ |
| 81 | |
| 82 | extern int enable_external_editor; |
| 83 | extern char *external_editor_command; |
| 84 | |
| 85 | #ifdef __CYGWIN__ |
| 86 | #include <windows.h> /* for MAX_PATH */ |
| 87 | #include <sys/cygwin.h> /* for cygwin32_conv_to_posix_path */ |
| 88 | #endif |
| 89 | |
| 90 | /* Call command_loop. If it happens to return, pass that through as a |
| 91 | non-zero return status. */ |
| 92 | |
| 93 | static int |
| 94 | captured_command_loop (void *data) |
| 95 | { |
| 96 | if (command_loop_hook == NULL) |
| 97 | command_loop (); |
| 98 | else |
| 99 | command_loop_hook (); |
| 100 | /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton |
| 101 | would clean things up (restoring the cleanup chain) to the state |
| 102 | they were just prior to the call. Technically, this means that |
| 103 | the do_cleanups() below is redundant. Unfortunatly, many FUNC's |
| 104 | are not that well behaved. do_cleanups should either be replaced |
| 105 | with a do_cleanups call (to cover the problem) or an assertion |
| 106 | check to detect bad FUNCs code. */ |
| 107 | do_cleanups (ALL_CLEANUPS); |
| 108 | /* If the command_loop returned, normally (rather than threw an |
| 109 | error) we try to quit. If the quit is aborted, catch_errors() |
| 110 | which called this catch the signal and restart the command |
| 111 | loop. */ |
| 112 | quit_command (NULL, instream == stdin); |
| 113 | return 1; |
| 114 | } |
| 115 | |
| 116 | struct captured_main_args |
| 117 | { |
| 118 | int argc; |
| 119 | char **argv; |
| 120 | }; |
| 121 | |
| 122 | static int |
| 123 | captured_main (void *data) |
| 124 | { |
| 125 | struct captured_main_args *context = data; |
| 126 | int argc = context->argc; |
| 127 | char **argv = context->argv; |
| 128 | int count; |
| 129 | static int quiet = 0; |
| 130 | static int batch = 0; |
| 131 | |
| 132 | /* Pointers to various arguments from command line. */ |
| 133 | char *symarg = NULL; |
| 134 | char *execarg = NULL; |
| 135 | char *corearg = NULL; |
| 136 | char *cdarg = NULL; |
| 137 | char *ttyarg = NULL; |
| 138 | |
| 139 | /* These are static so that we can take their address in an initializer. */ |
| 140 | static int print_help; |
| 141 | static int print_version; |
| 142 | |
| 143 | /* Pointers to all arguments of --command option. */ |
| 144 | char **cmdarg; |
| 145 | /* Allocated size of cmdarg. */ |
| 146 | int cmdsize; |
| 147 | /* Number of elements of cmdarg used. */ |
| 148 | int ncmd; |
| 149 | |
| 150 | /* Indices of all arguments of --directory option. */ |
| 151 | char **dirarg; |
| 152 | /* Allocated size. */ |
| 153 | int dirsize; |
| 154 | /* Number of elements used. */ |
| 155 | int ndir; |
| 156 | |
| 157 | struct stat homebuf, cwdbuf; |
| 158 | char *homedir, *homeinit; |
| 159 | |
| 160 | register int i; |
| 161 | |
| 162 | long time_at_startup = get_run_time (); |
| 163 | |
| 164 | START_PROGRESS (argv[0], 0); |
| 165 | |
| 166 | #ifdef MPW |
| 167 | /* Do all Mac-specific setup. */ |
| 168 | mac_init (); |
| 169 | #endif /* MPW */ |
| 170 | |
| 171 | /* This needs to happen before the first use of malloc. */ |
| 172 | init_malloc ((PTR) NULL); |
| 173 | |
| 174 | #if defined (ALIGN_STACK_ON_STARTUP) |
| 175 | i = (int) &count & 0x3; |
| 176 | if (i != 0) |
| 177 | alloca (4 - i); |
| 178 | #endif |
| 179 | |
| 180 | cmdsize = 1; |
| 181 | cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg)); |
| 182 | ncmd = 0; |
| 183 | dirsize = 1; |
| 184 | dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg)); |
| 185 | ndir = 0; |
| 186 | |
| 187 | quit_flag = 0; |
| 188 | line = (char *) xmalloc (linesize); |
| 189 | line[0] = '\0'; /* Terminate saved (now empty) cmd line */ |
| 190 | instream = stdin; |
| 191 | |
| 192 | getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)); |
| 193 | current_directory = gdb_dirbuf; |
| 194 | |
| 195 | #if defined (TUI) || defined (GDBTK) |
| 196 | /* Older code uses the tui_file and fputs_unfiltered_hook(). It |
| 197 | should be using a customized GDB_FILE object and re-initializing |
| 198 | within its own _initialize function. */ |
| 199 | gdb_stdout = tui_fileopen (stdout); |
| 200 | gdb_stderr = tui_fileopen (stderr); |
| 201 | gdb_stdlog = gdb_stdout; /* for moment */ |
| 202 | gdb_stdtarg = gdb_stderr; /* for moment */ |
| 203 | #else |
| 204 | gdb_stdout = stdio_fileopen (stdout); |
| 205 | gdb_stderr = stdio_fileopen (stderr); |
| 206 | gdb_stdlog = gdb_stderr; /* for moment */ |
| 207 | gdb_stdtarg = gdb_stderr; /* for moment */ |
| 208 | #endif |
| 209 | |
| 210 | /* initialize error() */ |
| 211 | error_init (); |
| 212 | |
| 213 | /* Parse arguments and options. */ |
| 214 | { |
| 215 | int c; |
| 216 | /* When var field is 0, use flag field to record the equivalent |
| 217 | short option (or arbitrary numbers starting at 10 for those |
| 218 | with no equivalent). */ |
| 219 | static struct option long_options[] = |
| 220 | { |
| 221 | {"async", no_argument, &event_loop_p, 1}, |
| 222 | {"noasync", no_argument, &event_loop_p, 0}, |
| 223 | #if defined(TUI) |
| 224 | {"tui", no_argument, &tui_version, 1}, |
| 225 | #endif |
| 226 | {"xdb", no_argument, &xdb_commands, 1}, |
| 227 | {"dbx", no_argument, &dbx_commands, 1}, |
| 228 | {"readnow", no_argument, &readnow_symbol_files, 1}, |
| 229 | {"r", no_argument, &readnow_symbol_files, 1}, |
| 230 | {"mapped", no_argument, &mapped_symbol_files, 1}, |
| 231 | {"m", no_argument, &mapped_symbol_files, 1}, |
| 232 | {"quiet", no_argument, &quiet, 1}, |
| 233 | {"q", no_argument, &quiet, 1}, |
| 234 | {"silent", no_argument, &quiet, 1}, |
| 235 | {"nx", no_argument, &inhibit_gdbinit, 1}, |
| 236 | {"n", no_argument, &inhibit_gdbinit, 1}, |
| 237 | {"batch", no_argument, &batch, 1}, |
| 238 | {"epoch", no_argument, &epoch_interface, 1}, |
| 239 | |
| 240 | /* This is a synonym for "--annotate=1". --annotate is now preferred, |
| 241 | but keep this here for a long time because people will be running |
| 242 | emacses which use --fullname. */ |
| 243 | {"fullname", no_argument, 0, 'f'}, |
| 244 | {"f", no_argument, 0, 'f'}, |
| 245 | |
| 246 | {"annotate", required_argument, 0, 12}, |
| 247 | {"help", no_argument, &print_help, 1}, |
| 248 | {"se", required_argument, 0, 10}, |
| 249 | {"symbols", required_argument, 0, 's'}, |
| 250 | {"s", required_argument, 0, 's'}, |
| 251 | {"exec", required_argument, 0, 'e'}, |
| 252 | {"e", required_argument, 0, 'e'}, |
| 253 | {"core", required_argument, 0, 'c'}, |
| 254 | {"c", required_argument, 0, 'c'}, |
| 255 | {"command", required_argument, 0, 'x'}, |
| 256 | {"version", no_argument, &print_version, 1}, |
| 257 | {"x", required_argument, 0, 'x'}, |
| 258 | {"directory", required_argument, 0, 'd'}, |
| 259 | {"d", required_argument, 0, 'd'}, |
| 260 | {"cd", required_argument, 0, 11}, |
| 261 | {"tty", required_argument, 0, 't'}, |
| 262 | {"baud", required_argument, 0, 'b'}, |
| 263 | {"b", required_argument, 0, 'b'}, |
| 264 | {"nw", no_argument, &use_windows, 0}, |
| 265 | {"nowindows", no_argument, &use_windows, 0}, |
| 266 | {"w", no_argument, &use_windows, 1}, |
| 267 | {"windows", no_argument, &use_windows, 1}, |
| 268 | {"statistics", no_argument, 0, 13}, |
| 269 | {"write", no_argument, &write_files, 1}, |
| 270 | /* Allow machine descriptions to add more options... */ |
| 271 | #ifdef ADDITIONAL_OPTIONS |
| 272 | ADDITIONAL_OPTIONS |
| 273 | #endif |
| 274 | {0, no_argument, 0, 0} |
| 275 | }; |
| 276 | |
| 277 | while (1) |
| 278 | { |
| 279 | int option_index; |
| 280 | |
| 281 | c = getopt_long_only (argc, argv, "", |
| 282 | long_options, &option_index); |
| 283 | if (c == EOF) |
| 284 | break; |
| 285 | |
| 286 | /* Long option that takes an argument. */ |
| 287 | if (c == 0 && long_options[option_index].flag == 0) |
| 288 | c = long_options[option_index].val; |
| 289 | |
| 290 | switch (c) |
| 291 | { |
| 292 | case 0: |
| 293 | /* Long option that just sets a flag. */ |
| 294 | break; |
| 295 | case 10: |
| 296 | symarg = optarg; |
| 297 | execarg = optarg; |
| 298 | break; |
| 299 | case 11: |
| 300 | cdarg = optarg; |
| 301 | break; |
| 302 | case 12: |
| 303 | /* FIXME: what if the syntax is wrong (e.g. not digits)? */ |
| 304 | annotation_level = atoi (optarg); |
| 305 | break; |
| 306 | case 13: |
| 307 | /* Enable the display of both time and space usage. */ |
| 308 | display_time = 1; |
| 309 | display_space = 1; |
| 310 | break; |
| 311 | case 'f': |
| 312 | annotation_level = 1; |
| 313 | /* We have probably been invoked from emacs. Disable window interface. */ |
| 314 | use_windows = 0; |
| 315 | break; |
| 316 | case 's': |
| 317 | symarg = optarg; |
| 318 | break; |
| 319 | case 'e': |
| 320 | execarg = optarg; |
| 321 | break; |
| 322 | case 'c': |
| 323 | corearg = optarg; |
| 324 | break; |
| 325 | case 'x': |
| 326 | cmdarg[ncmd++] = optarg; |
| 327 | if (ncmd >= cmdsize) |
| 328 | { |
| 329 | cmdsize *= 2; |
| 330 | cmdarg = (char **) xrealloc ((char *) cmdarg, |
| 331 | cmdsize * sizeof (*cmdarg)); |
| 332 | } |
| 333 | break; |
| 334 | case 'd': |
| 335 | dirarg[ndir++] = optarg; |
| 336 | if (ndir >= dirsize) |
| 337 | { |
| 338 | dirsize *= 2; |
| 339 | dirarg = (char **) xrealloc ((char *) dirarg, |
| 340 | dirsize * sizeof (*dirarg)); |
| 341 | } |
| 342 | break; |
| 343 | case 't': |
| 344 | ttyarg = optarg; |
| 345 | break; |
| 346 | case 'q': |
| 347 | quiet = 1; |
| 348 | break; |
| 349 | case 'b': |
| 350 | { |
| 351 | int i; |
| 352 | char *p; |
| 353 | |
| 354 | i = strtol (optarg, &p, 0); |
| 355 | if (i == 0 && p == optarg) |
| 356 | |
| 357 | /* Don't use *_filtered or warning() (which relies on |
| 358 | current_target) until after initialize_all_files(). */ |
| 359 | |
| 360 | fprintf_unfiltered |
| 361 | (gdb_stderr, |
| 362 | "warning: could not set baud rate to `%s'.\n", optarg); |
| 363 | else |
| 364 | baud_rate = i; |
| 365 | } |
| 366 | case 'l': |
| 367 | { |
| 368 | int i; |
| 369 | char *p; |
| 370 | |
| 371 | i = strtol (optarg, &p, 0); |
| 372 | if (i == 0 && p == optarg) |
| 373 | |
| 374 | /* Don't use *_filtered or warning() (which relies on |
| 375 | current_target) until after initialize_all_files(). */ |
| 376 | |
| 377 | fprintf_unfiltered |
| 378 | (gdb_stderr, |
| 379 | "warning: could not set timeout limit to `%s'.\n", optarg); |
| 380 | else |
| 381 | remote_timeout = i; |
| 382 | } |
| 383 | break; |
| 384 | |
| 385 | #ifdef ADDITIONAL_OPTION_CASES |
| 386 | ADDITIONAL_OPTION_CASES |
| 387 | #endif |
| 388 | case '?': |
| 389 | fprintf_unfiltered (gdb_stderr, |
| 390 | "Use `%s --help' for a complete list of options.\n", |
| 391 | argv[0]); |
| 392 | exit (1); |
| 393 | } |
| 394 | } |
| 395 | |
| 396 | /* If --help or --version, disable window interface. */ |
| 397 | if (print_help || print_version) |
| 398 | { |
| 399 | use_windows = 0; |
| 400 | #ifdef TUI |
| 401 | /* Disable the TUI as well. */ |
| 402 | tui_version = 0; |
| 403 | #endif |
| 404 | } |
| 405 | |
| 406 | #ifdef TUI |
| 407 | /* An explicit --tui flag overrides the default UI, which is the |
| 408 | window system. */ |
| 409 | if (tui_version) |
| 410 | use_windows = 0; |
| 411 | #endif |
| 412 | |
| 413 | /* OK, that's all the options. The other arguments are filenames. */ |
| 414 | count = 0; |
| 415 | for (; optind < argc; optind++) |
| 416 | switch (++count) |
| 417 | { |
| 418 | case 1: |
| 419 | symarg = argv[optind]; |
| 420 | execarg = argv[optind]; |
| 421 | break; |
| 422 | case 2: |
| 423 | corearg = argv[optind]; |
| 424 | break; |
| 425 | case 3: |
| 426 | fprintf_unfiltered (gdb_stderr, |
| 427 | "Excess command line arguments ignored. (%s%s)\n", |
| 428 | argv[optind], (optind == argc - 1) ? "" : " ..."); |
| 429 | break; |
| 430 | } |
| 431 | if (batch) |
| 432 | quiet = 1; |
| 433 | } |
| 434 | |
| 435 | #if defined(TUI) |
| 436 | /* Should this be moved to tui-top.c:_initialize_tui()? */ |
| 437 | if (tui_version) |
| 438 | init_ui_hook = tuiInit; |
| 439 | #endif |
| 440 | |
| 441 | /* Initialize all files. Give the interpreter a chance to take |
| 442 | control of the console via the init_ui_hook()) */ |
| 443 | gdb_init (argv[0]); |
| 444 | |
| 445 | /* Do these (and anything which might call wrap_here or *_filtered) |
| 446 | after initialize_all_files. */ |
| 447 | if (print_version) |
| 448 | { |
| 449 | print_gdb_version (gdb_stdout); |
| 450 | wrap_here (""); |
| 451 | printf_filtered ("\n"); |
| 452 | exit (0); |
| 453 | } |
| 454 | |
| 455 | if (print_help) |
| 456 | { |
| 457 | print_gdb_help (gdb_stdout); |
| 458 | fputs_unfiltered ("\n", gdb_stdout); |
| 459 | exit (0); |
| 460 | } |
| 461 | |
| 462 | if (!quiet) |
| 463 | { |
| 464 | /* Print all the junk at the top, with trailing "..." if we are about |
| 465 | to read a symbol file (possibly slowly). */ |
| 466 | print_gdb_version (gdb_stdout); |
| 467 | if (symarg) |
| 468 | printf_filtered (".."); |
| 469 | wrap_here (""); |
| 470 | gdb_flush (gdb_stdout); /* Force to screen during slow operations */ |
| 471 | } |
| 472 | |
| 473 | error_pre_print = "\n\n"; |
| 474 | quit_pre_print = error_pre_print; |
| 475 | |
| 476 | /* We may get more than one warning, don't double space all of them... */ |
| 477 | warning_pre_print = "\nwarning: "; |
| 478 | |
| 479 | /* Read and execute $HOME/.gdbinit file, if it exists. This is done |
| 480 | *before* all the command line arguments are processed; it sets |
| 481 | global parameters, which are independent of what file you are |
| 482 | debugging or what directory you are in. */ |
| 483 | #ifdef __CYGWIN32__ |
| 484 | { |
| 485 | char *tmp = getenv ("HOME"); |
| 486 | |
| 487 | if (tmp != NULL) |
| 488 | { |
| 489 | homedir = (char *) alloca (MAX_PATH + 1); |
| 490 | cygwin32_conv_to_posix_path (tmp, homedir); |
| 491 | } |
| 492 | else |
| 493 | homedir = NULL; |
| 494 | } |
| 495 | #else |
| 496 | homedir = getenv ("HOME"); |
| 497 | #endif |
| 498 | if (homedir) |
| 499 | { |
| 500 | homeinit = (char *) alloca (strlen (homedir) + |
| 501 | strlen (gdbinit) + 10); |
| 502 | strcpy (homeinit, homedir); |
| 503 | strcat (homeinit, "/"); |
| 504 | strcat (homeinit, gdbinit); |
| 505 | |
| 506 | if (!inhibit_gdbinit) |
| 507 | { |
| 508 | catch_command_errors (source_command, homeinit, 0, RETURN_MASK_ALL); |
| 509 | } |
| 510 | |
| 511 | /* Do stats; no need to do them elsewhere since we'll only |
| 512 | need them if homedir is set. Make sure that they are |
| 513 | zero in case one of them fails (this guarantees that they |
| 514 | won't match if either exists). */ |
| 515 | |
| 516 | memset (&homebuf, 0, sizeof (struct stat)); |
| 517 | memset (&cwdbuf, 0, sizeof (struct stat)); |
| 518 | |
| 519 | stat (homeinit, &homebuf); |
| 520 | stat (gdbinit, &cwdbuf); /* We'll only need this if |
| 521 | homedir was set. */ |
| 522 | } |
| 523 | |
| 524 | /* Now perform all the actions indicated by the arguments. */ |
| 525 | if (cdarg != NULL) |
| 526 | { |
| 527 | catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL); |
| 528 | } |
| 529 | |
| 530 | for (i = 0; i < ndir; i++) |
| 531 | catch_command_errors (directory_command, dirarg[i], 0, RETURN_MASK_ALL); |
| 532 | free ((PTR) dirarg); |
| 533 | |
| 534 | if (execarg != NULL |
| 535 | && symarg != NULL |
| 536 | && STREQ (execarg, symarg)) |
| 537 | { |
| 538 | /* The exec file and the symbol-file are the same. If we can't |
| 539 | open it, better only print one error message. |
| 540 | catch_command_errors returns non-zero on success! */ |
| 541 | if (catch_command_errors (exec_file_command, execarg, !batch, RETURN_MASK_ALL)) |
| 542 | catch_command_errors (symbol_file_command, symarg, 0, RETURN_MASK_ALL); |
| 543 | } |
| 544 | else |
| 545 | { |
| 546 | if (execarg != NULL) |
| 547 | catch_command_errors (exec_file_command, execarg, !batch, RETURN_MASK_ALL); |
| 548 | if (symarg != NULL) |
| 549 | catch_command_errors (symbol_file_command, symarg, 0, RETURN_MASK_ALL); |
| 550 | } |
| 551 | |
| 552 | /* After the symbol file has been read, print a newline to get us |
| 553 | beyond the copyright line... But errors should still set off |
| 554 | the error message with a (single) blank line. */ |
| 555 | if (!quiet) |
| 556 | printf_filtered ("\n"); |
| 557 | error_pre_print = "\n"; |
| 558 | quit_pre_print = error_pre_print; |
| 559 | warning_pre_print = "\nwarning: "; |
| 560 | |
| 561 | if (corearg != NULL) |
| 562 | { |
| 563 | if (catch_command_errors (core_file_command, corearg, !batch, RETURN_MASK_ALL) == 0) |
| 564 | { |
| 565 | /* See if the core file is really a PID. */ |
| 566 | if (isdigit (corearg[0])) |
| 567 | catch_command_errors (attach_command, corearg, !batch, RETURN_MASK_ALL); |
| 568 | } |
| 569 | } |
| 570 | |
| 571 | if (ttyarg != NULL) |
| 572 | catch_command_errors (tty_command, ttyarg, !batch, RETURN_MASK_ALL); |
| 573 | |
| 574 | #ifdef ADDITIONAL_OPTION_HANDLER |
| 575 | ADDITIONAL_OPTION_HANDLER; |
| 576 | #endif |
| 577 | |
| 578 | /* Error messages should no longer be distinguished with extra output. */ |
| 579 | error_pre_print = NULL; |
| 580 | quit_pre_print = NULL; |
| 581 | warning_pre_print = "warning: "; |
| 582 | |
| 583 | /* Read the .gdbinit file in the current directory, *if* it isn't |
| 584 | the same as the $HOME/.gdbinit file (it should exist, also). */ |
| 585 | |
| 586 | if (!homedir |
| 587 | || memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat))) |
| 588 | if (!inhibit_gdbinit) |
| 589 | { |
| 590 | catch_command_errors (source_command, gdbinit, 0, RETURN_MASK_ALL); |
| 591 | } |
| 592 | |
| 593 | for (i = 0; i < ncmd; i++) |
| 594 | { |
| 595 | #if 0 |
| 596 | /* NOTE: cagney/1999-11-03: SET_TOP_LEVEL() was a macro that |
| 597 | expanded into a call to setjmp(). */ |
| 598 | if (!SET_TOP_LEVEL ()) /* NB: This is #if 0'd out */ |
| 599 | { |
| 600 | /* NOTE: I am commenting this out, because it is not clear |
| 601 | where this feature is used. It is very old and |
| 602 | undocumented. ezannoni: 1999-05-04 */ |
| 603 | #if 0 |
| 604 | if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0') |
| 605 | read_command_file (stdin); |
| 606 | else |
| 607 | #endif |
| 608 | source_command (cmdarg[i], !batch); |
| 609 | do_cleanups (ALL_CLEANUPS); |
| 610 | } |
| 611 | #endif |
| 612 | catch_command_errors (source_command, cmdarg[i], !batch, RETURN_MASK_ALL); |
| 613 | } |
| 614 | free ((PTR) cmdarg); |
| 615 | |
| 616 | /* Read in the old history after all the command files have been read. */ |
| 617 | init_history (); |
| 618 | |
| 619 | if (batch) |
| 620 | { |
| 621 | /* We have hit the end of the batch file. */ |
| 622 | exit (0); |
| 623 | } |
| 624 | |
| 625 | /* Do any host- or target-specific hacks. This is used for i960 targets |
| 626 | to force the user to set a nindy target and spec its parameters. */ |
| 627 | |
| 628 | #ifdef BEFORE_MAIN_LOOP_HOOK |
| 629 | BEFORE_MAIN_LOOP_HOOK; |
| 630 | #endif |
| 631 | |
| 632 | END_PROGRESS (argv[0]); |
| 633 | |
| 634 | /* Show time and/or space usage. */ |
| 635 | |
| 636 | if (display_time) |
| 637 | { |
| 638 | long init_time = get_run_time () - time_at_startup; |
| 639 | |
| 640 | printf_unfiltered ("Startup time: %ld.%06ld\n", |
| 641 | init_time / 1000000, init_time % 1000000); |
| 642 | } |
| 643 | |
| 644 | if (display_space) |
| 645 | { |
| 646 | #ifdef HAVE_SBRK |
| 647 | extern char **environ; |
| 648 | char *lim = (char *) sbrk (0); |
| 649 | |
| 650 | printf_unfiltered ("Startup size: data size %ld\n", |
| 651 | (long) (lim - (char *) &environ)); |
| 652 | #endif |
| 653 | } |
| 654 | |
| 655 | /* The default command loop. |
| 656 | The WIN32 Gui calls this main to set up gdb's state, and |
| 657 | has its own command loop. */ |
| 658 | #if !defined _WIN32 || defined __GNUC__ |
| 659 | /* GUIs generally have their own command loop, mainloop, or |
| 660 | whatever. This is a good place to gain control because many |
| 661 | error conditions will end up here via longjmp(). */ |
| 662 | #if 0 |
| 663 | /* FIXME: cagney/1999-11-06: The original main loop was like: */ |
| 664 | while (1) |
| 665 | { |
| 666 | if (!SET_TOP_LEVEL ()) |
| 667 | { |
| 668 | do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */ |
| 669 | /* GUIs generally have their own command loop, mainloop, or whatever. |
| 670 | This is a good place to gain control because many error |
| 671 | conditions will end up here via longjmp(). */ |
| 672 | if (command_loop_hook) |
| 673 | command_loop_hook (); |
| 674 | else |
| 675 | command_loop (); |
| 676 | quit_command ((char *) 0, instream == stdin); |
| 677 | } |
| 678 | } |
| 679 | /* NOTE: If the command_loop() returned normally, the loop would |
| 680 | attempt to exit by calling the function quit_command(). That |
| 681 | function would either call exit() or throw an error returning |
| 682 | control to SET_TOP_LEVEL. */ |
| 683 | /* NOTE: The function do_cleanups() was called once each time round |
| 684 | the loop. The usefulness of the call isn't clear. If an error |
| 685 | was thrown, everything would have already been cleaned up. If |
| 686 | command_loop() returned normally and quit_command() was called, |
| 687 | either exit() or error() (again cleaning up) would be called. */ |
| 688 | #endif |
| 689 | /* NOTE: cagney/1999-11-07: There is probably no reason for not |
| 690 | moving this loop and the code found in captured_command_loop() |
| 691 | into the command_loop() proper. The main thing holding back that |
| 692 | change - SET_TOP_LEVEL() - has been eliminated. */ |
| 693 | while (1) |
| 694 | { |
| 695 | catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL); |
| 696 | } |
| 697 | #endif |
| 698 | /* No exit -- exit is through quit_command. */ |
| 699 | } |
| 700 | |
| 701 | int |
| 702 | main (int argc, char **argv) |
| 703 | { |
| 704 | struct captured_main_args args; |
| 705 | args.argc = argc; |
| 706 | args.argv = argv; |
| 707 | catch_errors (captured_main, &args, "", RETURN_MASK_ALL); |
| 708 | return 0; |
| 709 | } |
| 710 | |
| 711 | |
| 712 | /* Don't use *_filtered for printing help. We don't want to prompt |
| 713 | for continue no matter how small the screen or how much we're going |
| 714 | to print. */ |
| 715 | |
| 716 | static void |
| 717 | print_gdb_help (stream) |
| 718 | GDB_FILE *stream; |
| 719 | { |
| 720 | fputs_unfiltered ("\ |
| 721 | This is the GNU debugger. Usage:\n\n\ |
| 722 | gdb [options] [executable-file [core-file or process-id]]\n\n\ |
| 723 | Options:\n\n\ |
| 724 | ", stream); |
| 725 | fputs_unfiltered ("\ |
| 726 | --[no]async Enable (disable) asynchronous version of CLI\n\ |
| 727 | ", stream); |
| 728 | fputs_unfiltered ("\ |
| 729 | -b BAUDRATE Set serial port baud rate used for remote debugging.\n\ |
| 730 | --batch Exit after processing options.\n\ |
| 731 | --cd=DIR Change current directory to DIR.\n\ |
| 732 | --command=FILE Execute GDB commands from FILE.\n\ |
| 733 | --core=COREFILE Analyze the core dump COREFILE.\n\ |
| 734 | ", stream); |
| 735 | fputs_unfiltered ("\ |
| 736 | --dbx DBX compatibility mode.\n\ |
| 737 | --directory=DIR Search for source files in DIR.\n\ |
| 738 | --epoch Output information used by epoch emacs-GDB interface.\n\ |
| 739 | --exec=EXECFILE Use EXECFILE as the executable.\n\ |
| 740 | --fullname Output information used by emacs-GDB interface.\n\ |
| 741 | --help Print this message.\n\ |
| 742 | ", stream); |
| 743 | fputs_unfiltered ("\ |
| 744 | --mapped Use mapped symbol files if supported on this system.\n\ |
| 745 | --nw Do not use a window interface.\n\ |
| 746 | --nx Do not read ", stream); |
| 747 | fputs_unfiltered (gdbinit, stream); |
| 748 | fputs_unfiltered (" file.\n\ |
| 749 | --quiet Do not print version number on startup.\n\ |
| 750 | --readnow Fully read symbol files on first access.\n\ |
| 751 | ", stream); |
| 752 | fputs_unfiltered ("\ |
| 753 | --se=FILE Use FILE as symbol file and executable file.\n\ |
| 754 | --symbols=SYMFILE Read symbols from SYMFILE.\n\ |
| 755 | --tty=TTY Use TTY for input/output by the program being debugged.\n\ |
| 756 | ", stream); |
| 757 | #if defined(TUI) |
| 758 | fputs_unfiltered ("\ |
| 759 | --tui Use a terminal user interface.\n\ |
| 760 | ", stream); |
| 761 | #endif |
| 762 | fputs_unfiltered ("\ |
| 763 | --version Print version information and then exit.\n\ |
| 764 | -w Use a window interface.\n\ |
| 765 | --write Set writing into executable and core files.\n\ |
| 766 | --xdb XDB compatibility mode.\n\ |
| 767 | ", stream); |
| 768 | #ifdef ADDITIONAL_OPTION_HELP |
| 769 | fputs_unfiltered (ADDITIONAL_OPTION_HELP, stream); |
| 770 | #endif |
| 771 | fputs_unfiltered ("\n\ |
| 772 | For more information, type \"help\" from within GDB, or consult the\n\ |
| 773 | GDB manual (available as on-line info or a printed manual).\n\ |
| 774 | Report bugs to \"bug-gdb@gnu.org\".\ |
| 775 | ", stream); |
| 776 | } |