| 1 | /* Top level stuff for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
| 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, |
| 5 | 2009, 2010, 2011 Free Software Foundation, Inc. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "top.h" |
| 24 | #include "target.h" |
| 25 | #include "inferior.h" |
| 26 | #include "symfile.h" |
| 27 | #include "gdbcore.h" |
| 28 | |
| 29 | #include "exceptions.h" |
| 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 | #include "interps.h" |
| 41 | #include "main.h" |
| 42 | #include "source.h" |
| 43 | #include "cli/cli-cmds.h" |
| 44 | #include "python/python.h" |
| 45 | #include "objfiles.h" |
| 46 | |
| 47 | /* The selected interpreter. This will be used as a set command |
| 48 | variable, so it should always be malloc'ed - since |
| 49 | do_setshow_command will free it. */ |
| 50 | char *interpreter_p; |
| 51 | |
| 52 | /* Whether xdb commands will be handled. */ |
| 53 | int xdb_commands = 0; |
| 54 | |
| 55 | /* Whether dbx commands will be handled. */ |
| 56 | int dbx_commands = 0; |
| 57 | |
| 58 | /* System root path, used to find libraries etc. */ |
| 59 | char *gdb_sysroot = 0; |
| 60 | |
| 61 | /* GDB datadir, used to store data files. */ |
| 62 | char *gdb_datadir = 0; |
| 63 | |
| 64 | /* If gdb was configured with --with-python=/path, |
| 65 | the possibly relocated path to python's lib directory. */ |
| 66 | char *python_libdir = 0; |
| 67 | |
| 68 | struct ui_file *gdb_stdout; |
| 69 | struct ui_file *gdb_stderr; |
| 70 | struct ui_file *gdb_stdlog; |
| 71 | struct ui_file *gdb_stdin; |
| 72 | /* Target IO streams. */ |
| 73 | struct ui_file *gdb_stdtargin; |
| 74 | struct ui_file *gdb_stdtarg; |
| 75 | struct ui_file *gdb_stdtargerr; |
| 76 | |
| 77 | /* True if --batch or --batch-silent was seen. */ |
| 78 | int batch_flag = 0; |
| 79 | |
| 80 | /* Support for the --batch-silent option. */ |
| 81 | int batch_silent = 0; |
| 82 | |
| 83 | /* Support for --return-child-result option. |
| 84 | Set the default to -1 to return error in the case |
| 85 | that the program does not run or does not complete. */ |
| 86 | int return_child_result = 0; |
| 87 | int return_child_result_value = -1; |
| 88 | |
| 89 | /* Whether to enable writing into executable and core files. */ |
| 90 | extern int write_files; |
| 91 | |
| 92 | /* GDB as it has been invoked from the command line (i.e. argv[0]). */ |
| 93 | static char *gdb_program_name; |
| 94 | |
| 95 | static void print_gdb_help (struct ui_file *); |
| 96 | |
| 97 | /* These two are used to set the external editor commands when gdb is |
| 98 | farming out files to be edited by another program. */ |
| 99 | |
| 100 | extern char *external_editor_command; |
| 101 | |
| 102 | /* Relocate a file or directory. PROGNAME is the name by which gdb |
| 103 | was invoked (i.e., argv[0]). INITIAL is the default value for the |
| 104 | file or directory. FLAG is true if the value is relocatable, false |
| 105 | otherwise. Returns a newly allocated string; this may return NULL |
| 106 | under the same conditions as make_relative_prefix. */ |
| 107 | |
| 108 | static char * |
| 109 | relocate_path (const char *progname, const char *initial, int flag) |
| 110 | { |
| 111 | if (flag) |
| 112 | return make_relative_prefix (progname, BINDIR, initial); |
| 113 | return xstrdup (initial); |
| 114 | } |
| 115 | |
| 116 | /* Like relocate_path, but specifically checks for a directory. |
| 117 | INITIAL is relocated according to the rules of relocate_path. If |
| 118 | the result is a directory, it is used; otherwise, INITIAL is used. |
| 119 | The chosen directory is then canonicalized using lrealpath. This |
| 120 | function always returns a newly-allocated string. */ |
| 121 | |
| 122 | char * |
| 123 | relocate_gdb_directory (const char *initial, int flag) |
| 124 | { |
| 125 | char *dir; |
| 126 | |
| 127 | dir = relocate_path (gdb_program_name, initial, flag); |
| 128 | if (dir) |
| 129 | { |
| 130 | struct stat s; |
| 131 | |
| 132 | if (stat (dir, &s) != 0 || !S_ISDIR (s.st_mode)) |
| 133 | { |
| 134 | xfree (dir); |
| 135 | dir = NULL; |
| 136 | } |
| 137 | } |
| 138 | if (!dir) |
| 139 | dir = xstrdup (initial); |
| 140 | |
| 141 | /* Canonicalize the directory. */ |
| 142 | if (*dir) |
| 143 | { |
| 144 | char *canon_sysroot = lrealpath (dir); |
| 145 | |
| 146 | if (canon_sysroot) |
| 147 | { |
| 148 | xfree (dir); |
| 149 | dir = canon_sysroot; |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | return dir; |
| 154 | } |
| 155 | |
| 156 | /* Compute the locations of init files that GDB should source and |
| 157 | return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If |
| 158 | there is no system gdbinit (resp. home gdbinit and local gdbinit) |
| 159 | to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and |
| 160 | LOCAL_GDBINIT) is set to NULL. */ |
| 161 | static void |
| 162 | get_init_files (char **system_gdbinit, |
| 163 | char **home_gdbinit, |
| 164 | char **local_gdbinit) |
| 165 | { |
| 166 | static char *sysgdbinit = NULL; |
| 167 | static char *homeinit = NULL; |
| 168 | static char *localinit = NULL; |
| 169 | static int initialized = 0; |
| 170 | |
| 171 | if (!initialized) |
| 172 | { |
| 173 | struct stat homebuf, cwdbuf, s; |
| 174 | char *homedir, *relocated_sysgdbinit; |
| 175 | |
| 176 | if (SYSTEM_GDBINIT[0]) |
| 177 | { |
| 178 | relocated_sysgdbinit = relocate_path (gdb_program_name, |
| 179 | SYSTEM_GDBINIT, |
| 180 | SYSTEM_GDBINIT_RELOCATABLE); |
| 181 | if (relocated_sysgdbinit && stat (relocated_sysgdbinit, &s) == 0) |
| 182 | sysgdbinit = relocated_sysgdbinit; |
| 183 | else |
| 184 | xfree (relocated_sysgdbinit); |
| 185 | } |
| 186 | |
| 187 | homedir = getenv ("HOME"); |
| 188 | |
| 189 | /* If the .gdbinit file in the current directory is the same as |
| 190 | the $HOME/.gdbinit file, it should not be sourced. homebuf |
| 191 | and cwdbuf are used in that purpose. Make sure that the stats |
| 192 | are zero in case one of them fails (this guarantees that they |
| 193 | won't match if either exists). */ |
| 194 | |
| 195 | memset (&homebuf, 0, sizeof (struct stat)); |
| 196 | memset (&cwdbuf, 0, sizeof (struct stat)); |
| 197 | |
| 198 | if (homedir) |
| 199 | { |
| 200 | homeinit = xstrprintf ("%s/%s", homedir, gdbinit); |
| 201 | if (stat (homeinit, &homebuf) != 0) |
| 202 | { |
| 203 | xfree (homeinit); |
| 204 | homeinit = NULL; |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | if (stat (gdbinit, &cwdbuf) == 0) |
| 209 | { |
| 210 | if (!homeinit |
| 211 | || memcmp ((char *) &homebuf, (char *) &cwdbuf, |
| 212 | sizeof (struct stat))) |
| 213 | localinit = gdbinit; |
| 214 | } |
| 215 | |
| 216 | initialized = 1; |
| 217 | } |
| 218 | |
| 219 | *system_gdbinit = sysgdbinit; |
| 220 | *home_gdbinit = homeinit; |
| 221 | *local_gdbinit = localinit; |
| 222 | } |
| 223 | |
| 224 | /* Call command_loop. If it happens to return, pass that through as a |
| 225 | non-zero return status. */ |
| 226 | |
| 227 | static int |
| 228 | captured_command_loop (void *data) |
| 229 | { |
| 230 | /* Top-level execution commands can be run on the background from |
| 231 | here on. */ |
| 232 | interpreter_async = 1; |
| 233 | |
| 234 | current_interp_command_loop (); |
| 235 | /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton |
| 236 | would clean things up (restoring the cleanup chain) to the state |
| 237 | they were just prior to the call. Technically, this means that |
| 238 | the do_cleanups() below is redundant. Unfortunately, many FUNCs |
| 239 | are not that well behaved. do_cleanups should either be replaced |
| 240 | with a do_cleanups call (to cover the problem) or an assertion |
| 241 | check to detect bad FUNCs code. */ |
| 242 | do_cleanups (ALL_CLEANUPS); |
| 243 | /* If the command_loop returned, normally (rather than threw an |
| 244 | error) we try to quit. If the quit is aborted, catch_errors() |
| 245 | which called this catch the signal and restart the command |
| 246 | loop. */ |
| 247 | quit_command (NULL, instream == stdin); |
| 248 | return 1; |
| 249 | } |
| 250 | |
| 251 | static int |
| 252 | captured_main (void *data) |
| 253 | { |
| 254 | struct captured_main_args *context = data; |
| 255 | int argc = context->argc; |
| 256 | char **argv = context->argv; |
| 257 | static int quiet = 0; |
| 258 | static int set_args = 0; |
| 259 | |
| 260 | /* Pointers to various arguments from command line. */ |
| 261 | char *symarg = NULL; |
| 262 | char *execarg = NULL; |
| 263 | char *pidarg = NULL; |
| 264 | char *corearg = NULL; |
| 265 | char *pid_or_core_arg = NULL; |
| 266 | char *cdarg = NULL; |
| 267 | char *ttyarg = NULL; |
| 268 | |
| 269 | /* These are static so that we can take their address in an |
| 270 | initializer. */ |
| 271 | static int print_help; |
| 272 | static int print_version; |
| 273 | |
| 274 | /* Pointers to all arguments of --command option. */ |
| 275 | struct cmdarg { |
| 276 | enum { |
| 277 | CMDARG_FILE, |
| 278 | CMDARG_COMMAND |
| 279 | } type; |
| 280 | char *string; |
| 281 | } *cmdarg; |
| 282 | /* Allocated size of cmdarg. */ |
| 283 | int cmdsize; |
| 284 | /* Number of elements of cmdarg used. */ |
| 285 | int ncmd; |
| 286 | |
| 287 | /* Indices of all arguments of --directory option. */ |
| 288 | char **dirarg; |
| 289 | /* Allocated size. */ |
| 290 | int dirsize; |
| 291 | /* Number of elements used. */ |
| 292 | int ndir; |
| 293 | |
| 294 | /* gdb init files. */ |
| 295 | char *system_gdbinit; |
| 296 | char *home_gdbinit; |
| 297 | char *local_gdbinit; |
| 298 | |
| 299 | int i; |
| 300 | int save_auto_load; |
| 301 | struct objfile *objfile; |
| 302 | |
| 303 | struct cleanup *pre_stat_chain = make_command_stats_cleanup (0); |
| 304 | |
| 305 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) |
| 306 | setlocale (LC_MESSAGES, ""); |
| 307 | #endif |
| 308 | #if defined (HAVE_SETLOCALE) |
| 309 | setlocale (LC_CTYPE, ""); |
| 310 | #endif |
| 311 | bindtextdomain (PACKAGE, LOCALEDIR); |
| 312 | textdomain (PACKAGE); |
| 313 | |
| 314 | #ifdef HAVE_SBRK |
| 315 | lim_at_start = (char *) sbrk (0); |
| 316 | #endif |
| 317 | |
| 318 | cmdsize = 1; |
| 319 | cmdarg = (struct cmdarg *) xmalloc (cmdsize * sizeof (*cmdarg)); |
| 320 | ncmd = 0; |
| 321 | dirsize = 1; |
| 322 | dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg)); |
| 323 | ndir = 0; |
| 324 | |
| 325 | quit_flag = 0; |
| 326 | saved_command_line = (char *) xmalloc (saved_command_line_size); |
| 327 | saved_command_line[0] = '\0'; |
| 328 | instream = stdin; |
| 329 | |
| 330 | gdb_stdout = stdio_fileopen (stdout); |
| 331 | gdb_stderr = stdio_fileopen (stderr); |
| 332 | gdb_stdlog = gdb_stderr; /* for moment */ |
| 333 | gdb_stdtarg = gdb_stderr; /* for moment */ |
| 334 | gdb_stdin = stdio_fileopen (stdin); |
| 335 | gdb_stdtargerr = gdb_stderr; /* for moment */ |
| 336 | gdb_stdtargin = gdb_stdin; /* for moment */ |
| 337 | |
| 338 | gdb_program_name = xstrdup (argv[0]); |
| 339 | |
| 340 | if (! getcwd (gdb_dirbuf, sizeof (gdb_dirbuf))) |
| 341 | /* Don't use *_filtered or warning() (which relies on |
| 342 | current_target) until after initialize_all_files(). */ |
| 343 | fprintf_unfiltered (gdb_stderr, |
| 344 | _("%s: warning: error finding " |
| 345 | "working directory: %s\n"), |
| 346 | argv[0], safe_strerror (errno)); |
| 347 | |
| 348 | current_directory = gdb_dirbuf; |
| 349 | |
| 350 | /* Set the sysroot path. */ |
| 351 | gdb_sysroot = relocate_gdb_directory (TARGET_SYSTEM_ROOT, |
| 352 | TARGET_SYSTEM_ROOT_RELOCATABLE); |
| 353 | |
| 354 | debug_file_directory = relocate_gdb_directory (DEBUGDIR, |
| 355 | DEBUGDIR_RELOCATABLE); |
| 356 | |
| 357 | gdb_datadir = relocate_gdb_directory (GDB_DATADIR, |
| 358 | GDB_DATADIR_RELOCATABLE); |
| 359 | |
| 360 | #ifdef WITH_PYTHON_PATH |
| 361 | { |
| 362 | /* For later use in helping Python find itself. */ |
| 363 | char *tmp = concat (WITH_PYTHON_PATH, SLASH_STRING, "lib", NULL); |
| 364 | |
| 365 | python_libdir = relocate_gdb_directory (tmp, PYTHON_PATH_RELOCATABLE); |
| 366 | xfree (tmp); |
| 367 | } |
| 368 | #endif |
| 369 | |
| 370 | #ifdef RELOC_SRCDIR |
| 371 | add_substitute_path_rule (RELOC_SRCDIR, |
| 372 | make_relative_prefix (argv[0], BINDIR, |
| 373 | RELOC_SRCDIR)); |
| 374 | #endif |
| 375 | |
| 376 | /* There will always be an interpreter. Either the one passed into |
| 377 | this captured main, or one specified by the user at start up, or |
| 378 | the console. Initialize the interpreter to the one requested by |
| 379 | the application. */ |
| 380 | interpreter_p = xstrdup (context->interpreter_p); |
| 381 | |
| 382 | /* Parse arguments and options. */ |
| 383 | { |
| 384 | int c; |
| 385 | /* When var field is 0, use flag field to record the equivalent |
| 386 | short option (or arbitrary numbers starting at 10 for those |
| 387 | with no equivalent). */ |
| 388 | enum { |
| 389 | OPT_SE = 10, |
| 390 | OPT_CD, |
| 391 | OPT_ANNOTATE, |
| 392 | OPT_STATISTICS, |
| 393 | OPT_TUI, |
| 394 | OPT_NOWINDOWS, |
| 395 | OPT_WINDOWS |
| 396 | }; |
| 397 | static struct option long_options[] = |
| 398 | { |
| 399 | {"tui", no_argument, 0, OPT_TUI}, |
| 400 | {"xdb", no_argument, &xdb_commands, 1}, |
| 401 | {"dbx", no_argument, &dbx_commands, 1}, |
| 402 | {"readnow", no_argument, &readnow_symbol_files, 1}, |
| 403 | {"r", no_argument, &readnow_symbol_files, 1}, |
| 404 | {"quiet", no_argument, &quiet, 1}, |
| 405 | {"q", no_argument, &quiet, 1}, |
| 406 | {"silent", no_argument, &quiet, 1}, |
| 407 | {"nx", no_argument, &inhibit_gdbinit, 1}, |
| 408 | {"n", no_argument, &inhibit_gdbinit, 1}, |
| 409 | {"batch-silent", no_argument, 0, 'B'}, |
| 410 | {"batch", no_argument, &batch_flag, 1}, |
| 411 | {"epoch", no_argument, &epoch_interface, 1}, |
| 412 | |
| 413 | /* This is a synonym for "--annotate=1". --annotate is now |
| 414 | preferred, but keep this here for a long time because people |
| 415 | will be running emacses which use --fullname. */ |
| 416 | {"fullname", no_argument, 0, 'f'}, |
| 417 | {"f", no_argument, 0, 'f'}, |
| 418 | |
| 419 | {"annotate", required_argument, 0, OPT_ANNOTATE}, |
| 420 | {"help", no_argument, &print_help, 1}, |
| 421 | {"se", required_argument, 0, OPT_SE}, |
| 422 | {"symbols", required_argument, 0, 's'}, |
| 423 | {"s", required_argument, 0, 's'}, |
| 424 | {"exec", required_argument, 0, 'e'}, |
| 425 | {"e", required_argument, 0, 'e'}, |
| 426 | {"core", required_argument, 0, 'c'}, |
| 427 | {"c", required_argument, 0, 'c'}, |
| 428 | {"pid", required_argument, 0, 'p'}, |
| 429 | {"p", required_argument, 0, 'p'}, |
| 430 | {"command", required_argument, 0, 'x'}, |
| 431 | {"eval-command", required_argument, 0, 'X'}, |
| 432 | {"version", no_argument, &print_version, 1}, |
| 433 | {"x", required_argument, 0, 'x'}, |
| 434 | {"ex", required_argument, 0, 'X'}, |
| 435 | #ifdef GDBTK |
| 436 | {"tclcommand", required_argument, 0, 'z'}, |
| 437 | {"enable-external-editor", no_argument, 0, 'y'}, |
| 438 | {"editor-command", required_argument, 0, 'w'}, |
| 439 | #endif |
| 440 | {"ui", required_argument, 0, 'i'}, |
| 441 | {"interpreter", required_argument, 0, 'i'}, |
| 442 | {"i", required_argument, 0, 'i'}, |
| 443 | {"directory", required_argument, 0, 'd'}, |
| 444 | {"d", required_argument, 0, 'd'}, |
| 445 | {"data-directory", required_argument, 0, 'D'}, |
| 446 | {"cd", required_argument, 0, OPT_CD}, |
| 447 | {"tty", required_argument, 0, 't'}, |
| 448 | {"baud", required_argument, 0, 'b'}, |
| 449 | {"b", required_argument, 0, 'b'}, |
| 450 | {"nw", no_argument, NULL, OPT_NOWINDOWS}, |
| 451 | {"nowindows", no_argument, NULL, OPT_NOWINDOWS}, |
| 452 | {"w", no_argument, NULL, OPT_WINDOWS}, |
| 453 | {"windows", no_argument, NULL, OPT_WINDOWS}, |
| 454 | {"statistics", no_argument, 0, OPT_STATISTICS}, |
| 455 | {"write", no_argument, &write_files, 1}, |
| 456 | {"args", no_argument, &set_args, 1}, |
| 457 | {"l", required_argument, 0, 'l'}, |
| 458 | {"return-child-result", no_argument, &return_child_result, 1}, |
| 459 | {0, no_argument, 0, 0} |
| 460 | }; |
| 461 | |
| 462 | while (1) |
| 463 | { |
| 464 | int option_index; |
| 465 | |
| 466 | c = getopt_long_only (argc, argv, "", |
| 467 | long_options, &option_index); |
| 468 | if (c == EOF || set_args) |
| 469 | break; |
| 470 | |
| 471 | /* Long option that takes an argument. */ |
| 472 | if (c == 0 && long_options[option_index].flag == 0) |
| 473 | c = long_options[option_index].val; |
| 474 | |
| 475 | switch (c) |
| 476 | { |
| 477 | case 0: |
| 478 | /* Long option that just sets a flag. */ |
| 479 | break; |
| 480 | case OPT_SE: |
| 481 | symarg = optarg; |
| 482 | execarg = optarg; |
| 483 | break; |
| 484 | case OPT_CD: |
| 485 | cdarg = optarg; |
| 486 | break; |
| 487 | case OPT_ANNOTATE: |
| 488 | /* FIXME: what if the syntax is wrong (e.g. not digits)? */ |
| 489 | annotation_level = atoi (optarg); |
| 490 | break; |
| 491 | case OPT_STATISTICS: |
| 492 | /* Enable the display of both time and space usage. */ |
| 493 | set_display_time (1); |
| 494 | set_display_space (1); |
| 495 | break; |
| 496 | case OPT_TUI: |
| 497 | /* --tui is equivalent to -i=tui. */ |
| 498 | #ifdef TUI |
| 499 | xfree (interpreter_p); |
| 500 | interpreter_p = xstrdup (INTERP_TUI); |
| 501 | #else |
| 502 | fprintf_unfiltered (gdb_stderr, |
| 503 | _("%s: TUI mode is not supported\n"), |
| 504 | argv[0]); |
| 505 | exit (1); |
| 506 | #endif |
| 507 | break; |
| 508 | case OPT_WINDOWS: |
| 509 | /* FIXME: cagney/2003-03-01: Not sure if this option is |
| 510 | actually useful, and if it is, what it should do. */ |
| 511 | #ifdef GDBTK |
| 512 | /* --windows is equivalent to -i=insight. */ |
| 513 | xfree (interpreter_p); |
| 514 | interpreter_p = xstrdup (INTERP_INSIGHT); |
| 515 | #endif |
| 516 | use_windows = 1; |
| 517 | break; |
| 518 | case OPT_NOWINDOWS: |
| 519 | /* -nw is equivalent to -i=console. */ |
| 520 | xfree (interpreter_p); |
| 521 | interpreter_p = xstrdup (INTERP_CONSOLE); |
| 522 | use_windows = 0; |
| 523 | break; |
| 524 | case 'f': |
| 525 | annotation_level = 1; |
| 526 | /* We have probably been invoked from emacs. Disable |
| 527 | window interface. */ |
| 528 | use_windows = 0; |
| 529 | break; |
| 530 | case 's': |
| 531 | symarg = optarg; |
| 532 | break; |
| 533 | case 'e': |
| 534 | execarg = optarg; |
| 535 | break; |
| 536 | case 'c': |
| 537 | corearg = optarg; |
| 538 | break; |
| 539 | case 'p': |
| 540 | pidarg = optarg; |
| 541 | break; |
| 542 | case 'x': |
| 543 | cmdarg[ncmd].type = CMDARG_FILE; |
| 544 | cmdarg[ncmd++].string = optarg; |
| 545 | if (ncmd >= cmdsize) |
| 546 | { |
| 547 | cmdsize *= 2; |
| 548 | cmdarg = xrealloc ((char *) cmdarg, |
| 549 | cmdsize * sizeof (*cmdarg)); |
| 550 | } |
| 551 | break; |
| 552 | case 'X': |
| 553 | cmdarg[ncmd].type = CMDARG_COMMAND; |
| 554 | cmdarg[ncmd++].string = optarg; |
| 555 | if (ncmd >= cmdsize) |
| 556 | { |
| 557 | cmdsize *= 2; |
| 558 | cmdarg = xrealloc ((char *) cmdarg, |
| 559 | cmdsize * sizeof (*cmdarg)); |
| 560 | } |
| 561 | break; |
| 562 | case 'B': |
| 563 | batch_flag = batch_silent = 1; |
| 564 | gdb_stdout = ui_file_new(); |
| 565 | break; |
| 566 | case 'D': |
| 567 | xfree (gdb_datadir); |
| 568 | gdb_datadir = xstrdup (optarg); |
| 569 | break; |
| 570 | #ifdef GDBTK |
| 571 | case 'z': |
| 572 | { |
| 573 | extern int gdbtk_test (char *); |
| 574 | |
| 575 | if (!gdbtk_test (optarg)) |
| 576 | { |
| 577 | fprintf_unfiltered (gdb_stderr, |
| 578 | _("%s: unable to load " |
| 579 | "tclcommand file \"%s\""), |
| 580 | argv[0], optarg); |
| 581 | exit (1); |
| 582 | } |
| 583 | break; |
| 584 | } |
| 585 | case 'y': |
| 586 | /* Backwards compatibility only. */ |
| 587 | break; |
| 588 | case 'w': |
| 589 | { |
| 590 | external_editor_command = xstrdup (optarg); |
| 591 | break; |
| 592 | } |
| 593 | #endif /* GDBTK */ |
| 594 | case 'i': |
| 595 | xfree (interpreter_p); |
| 596 | interpreter_p = xstrdup (optarg); |
| 597 | break; |
| 598 | case 'd': |
| 599 | dirarg[ndir++] = optarg; |
| 600 | if (ndir >= dirsize) |
| 601 | { |
| 602 | dirsize *= 2; |
| 603 | dirarg = (char **) xrealloc ((char *) dirarg, |
| 604 | dirsize * sizeof (*dirarg)); |
| 605 | } |
| 606 | break; |
| 607 | case 't': |
| 608 | ttyarg = optarg; |
| 609 | break; |
| 610 | case 'q': |
| 611 | quiet = 1; |
| 612 | break; |
| 613 | case 'b': |
| 614 | { |
| 615 | int i; |
| 616 | char *p; |
| 617 | |
| 618 | i = strtol (optarg, &p, 0); |
| 619 | if (i == 0 && p == optarg) |
| 620 | |
| 621 | /* Don't use *_filtered or warning() (which relies on |
| 622 | current_target) until after initialize_all_files(). */ |
| 623 | |
| 624 | fprintf_unfiltered |
| 625 | (gdb_stderr, |
| 626 | _("warning: could not set baud rate to `%s'.\n"), optarg); |
| 627 | else |
| 628 | baud_rate = i; |
| 629 | } |
| 630 | break; |
| 631 | case 'l': |
| 632 | { |
| 633 | int i; |
| 634 | char *p; |
| 635 | |
| 636 | i = strtol (optarg, &p, 0); |
| 637 | if (i == 0 && p == optarg) |
| 638 | |
| 639 | /* Don't use *_filtered or warning() (which relies on |
| 640 | current_target) until after initialize_all_files(). */ |
| 641 | |
| 642 | fprintf_unfiltered (gdb_stderr, |
| 643 | _("warning: could not set " |
| 644 | "timeout limit to `%s'.\n"), optarg); |
| 645 | else |
| 646 | remote_timeout = i; |
| 647 | } |
| 648 | break; |
| 649 | |
| 650 | case '?': |
| 651 | fprintf_unfiltered (gdb_stderr, |
| 652 | _("Use `%s --help' for a " |
| 653 | "complete list of options.\n"), |
| 654 | argv[0]); |
| 655 | exit (1); |
| 656 | } |
| 657 | } |
| 658 | |
| 659 | /* If --help or --version, disable window interface. */ |
| 660 | if (print_help || print_version) |
| 661 | { |
| 662 | use_windows = 0; |
| 663 | } |
| 664 | |
| 665 | if (batch_flag) |
| 666 | quiet = 1; |
| 667 | } |
| 668 | |
| 669 | /* Initialize all files. Give the interpreter a chance to take |
| 670 | control of the console via the deprecated_init_ui_hook (). */ |
| 671 | gdb_init (argv[0]); |
| 672 | |
| 673 | /* Now that gdb_init has created the initial inferior, we're in |
| 674 | position to set args for that inferior. */ |
| 675 | if (set_args) |
| 676 | { |
| 677 | /* The remaining options are the command-line options for the |
| 678 | inferior. The first one is the sym/exec file, and the rest |
| 679 | are arguments. */ |
| 680 | if (optind >= argc) |
| 681 | { |
| 682 | fprintf_unfiltered (gdb_stderr, |
| 683 | _("%s: `--args' specified but " |
| 684 | "no program specified\n"), |
| 685 | argv[0]); |
| 686 | exit (1); |
| 687 | } |
| 688 | symarg = argv[optind]; |
| 689 | execarg = argv[optind]; |
| 690 | ++optind; |
| 691 | set_inferior_args_vector (argc - optind, &argv[optind]); |
| 692 | } |
| 693 | else |
| 694 | { |
| 695 | /* OK, that's all the options. */ |
| 696 | |
| 697 | /* The first argument, if specified, is the name of the |
| 698 | executable. */ |
| 699 | if (optind < argc) |
| 700 | { |
| 701 | symarg = argv[optind]; |
| 702 | execarg = argv[optind]; |
| 703 | optind++; |
| 704 | } |
| 705 | |
| 706 | /* If the user hasn't already specified a PID or the name of a |
| 707 | core file, then a second optional argument is allowed. If |
| 708 | present, this argument should be interpreted as either a |
| 709 | PID or a core file, whichever works. */ |
| 710 | if (pidarg == NULL && corearg == NULL && optind < argc) |
| 711 | { |
| 712 | pid_or_core_arg = argv[optind]; |
| 713 | optind++; |
| 714 | } |
| 715 | |
| 716 | /* Any argument left on the command line is unexpected and |
| 717 | will be ignored. Inform the user. */ |
| 718 | if (optind < argc) |
| 719 | fprintf_unfiltered (gdb_stderr, |
| 720 | _("Excess command line " |
| 721 | "arguments ignored. (%s%s)\n"), |
| 722 | argv[optind], |
| 723 | (optind == argc - 1) ? "" : " ..."); |
| 724 | } |
| 725 | |
| 726 | /* Lookup gdbinit files. Note that the gdbinit file name may be |
| 727 | overriden during file initialization, so get_init_files should be |
| 728 | called after gdb_init. */ |
| 729 | get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit); |
| 730 | |
| 731 | /* Do these (and anything which might call wrap_here or *_filtered) |
| 732 | after initialize_all_files() but before the interpreter has been |
| 733 | installed. Otherwize the help/version messages will be eaten by |
| 734 | the interpreter's output handler. */ |
| 735 | |
| 736 | if (print_version) |
| 737 | { |
| 738 | print_gdb_version (gdb_stdout); |
| 739 | wrap_here (""); |
| 740 | printf_filtered ("\n"); |
| 741 | exit (0); |
| 742 | } |
| 743 | |
| 744 | if (print_help) |
| 745 | { |
| 746 | print_gdb_help (gdb_stdout); |
| 747 | fputs_unfiltered ("\n", gdb_stdout); |
| 748 | exit (0); |
| 749 | } |
| 750 | |
| 751 | /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets |
| 752 | GDB retain the old MI1 interpreter startup behavior. Output the |
| 753 | copyright message before the interpreter is installed. That way |
| 754 | it isn't encapsulated in MI output. */ |
| 755 | if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0) |
| 756 | { |
| 757 | /* Print all the junk at the top, with trailing "..." if we are |
| 758 | about to read a symbol file (possibly slowly). */ |
| 759 | print_gdb_version (gdb_stdout); |
| 760 | if (symarg) |
| 761 | printf_filtered (".."); |
| 762 | wrap_here (""); |
| 763 | printf_filtered ("\n"); |
| 764 | gdb_flush (gdb_stdout); /* Force to screen during slow |
| 765 | operations. */ |
| 766 | } |
| 767 | |
| 768 | /* Install the default UI. All the interpreters should have had a |
| 769 | look at things by now. Initialize the default interpreter. */ |
| 770 | |
| 771 | { |
| 772 | /* Find it. */ |
| 773 | struct interp *interp = interp_lookup (interpreter_p); |
| 774 | |
| 775 | if (interp == NULL) |
| 776 | error (_("Interpreter `%s' unrecognized"), interpreter_p); |
| 777 | /* Install it. */ |
| 778 | if (!interp_set (interp, 1)) |
| 779 | { |
| 780 | fprintf_unfiltered (gdb_stderr, |
| 781 | "Interpreter `%s' failed to initialize.\n", |
| 782 | interpreter_p); |
| 783 | exit (1); |
| 784 | } |
| 785 | } |
| 786 | |
| 787 | /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets |
| 788 | GDB retain the old MI1 interpreter startup behavior. Output the |
| 789 | copyright message after the interpreter is installed when it is |
| 790 | any sane interpreter. */ |
| 791 | if (!quiet && !current_interp_named_p (INTERP_MI1)) |
| 792 | { |
| 793 | /* Print all the junk at the top, with trailing "..." if we are |
| 794 | about to read a symbol file (possibly slowly). */ |
| 795 | print_gdb_version (gdb_stdout); |
| 796 | if (symarg) |
| 797 | printf_filtered (".."); |
| 798 | wrap_here (""); |
| 799 | printf_filtered ("\n"); |
| 800 | gdb_flush (gdb_stdout); /* Force to screen during slow |
| 801 | operations. */ |
| 802 | } |
| 803 | |
| 804 | /* Set off error and warning messages with a blank line. */ |
| 805 | error_pre_print = "\n"; |
| 806 | quit_pre_print = error_pre_print; |
| 807 | warning_pre_print = _("\nwarning: "); |
| 808 | |
| 809 | /* Read and execute the system-wide gdbinit file, if it exists. |
| 810 | This is done *before* all the command line arguments are |
| 811 | processed; it sets global parameters, which are independent of |
| 812 | what file you are debugging or what directory you are in. */ |
| 813 | if (system_gdbinit && !inhibit_gdbinit) |
| 814 | catch_command_errors (source_script, system_gdbinit, 0, RETURN_MASK_ALL); |
| 815 | |
| 816 | /* Read and execute $HOME/.gdbinit file, if it exists. This is done |
| 817 | *before* all the command line arguments are processed; it sets |
| 818 | global parameters, which are independent of what file you are |
| 819 | debugging or what directory you are in. */ |
| 820 | |
| 821 | if (home_gdbinit && !inhibit_gdbinit) |
| 822 | catch_command_errors (source_script, home_gdbinit, 0, RETURN_MASK_ALL); |
| 823 | |
| 824 | /* Now perform all the actions indicated by the arguments. */ |
| 825 | if (cdarg != NULL) |
| 826 | { |
| 827 | catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL); |
| 828 | } |
| 829 | |
| 830 | for (i = 0; i < ndir; i++) |
| 831 | catch_command_errors (directory_switch, dirarg[i], 0, RETURN_MASK_ALL); |
| 832 | xfree (dirarg); |
| 833 | |
| 834 | /* Skip auto-loading section-specified scripts until we've sourced |
| 835 | local_gdbinit (which is often used to augment the source search |
| 836 | path). */ |
| 837 | save_auto_load = gdbpy_global_auto_load; |
| 838 | gdbpy_global_auto_load = 0; |
| 839 | |
| 840 | if (execarg != NULL |
| 841 | && symarg != NULL |
| 842 | && strcmp (execarg, symarg) == 0) |
| 843 | { |
| 844 | /* The exec file and the symbol-file are the same. If we can't |
| 845 | open it, better only print one error message. |
| 846 | catch_command_errors returns non-zero on success! */ |
| 847 | if (catch_command_errors (exec_file_attach, execarg, |
| 848 | !batch_flag, RETURN_MASK_ALL)) |
| 849 | catch_command_errors (symbol_file_add_main, symarg, |
| 850 | !batch_flag, RETURN_MASK_ALL); |
| 851 | } |
| 852 | else |
| 853 | { |
| 854 | if (execarg != NULL) |
| 855 | catch_command_errors (exec_file_attach, execarg, |
| 856 | !batch_flag, RETURN_MASK_ALL); |
| 857 | if (symarg != NULL) |
| 858 | catch_command_errors (symbol_file_add_main, symarg, |
| 859 | !batch_flag, RETURN_MASK_ALL); |
| 860 | } |
| 861 | |
| 862 | if (corearg && pidarg) |
| 863 | error (_("Can't attach to process and specify " |
| 864 | "a core file at the same time.")); |
| 865 | |
| 866 | if (corearg != NULL) |
| 867 | catch_command_errors (core_file_command, corearg, |
| 868 | !batch_flag, RETURN_MASK_ALL); |
| 869 | else if (pidarg != NULL) |
| 870 | catch_command_errors (attach_command, pidarg, |
| 871 | !batch_flag, RETURN_MASK_ALL); |
| 872 | else if (pid_or_core_arg) |
| 873 | { |
| 874 | /* The user specified 'gdb program pid' or gdb program core'. |
| 875 | If pid_or_core_arg's first character is a digit, try attach |
| 876 | first and then corefile. Otherwise try just corefile. */ |
| 877 | |
| 878 | if (isdigit (pid_or_core_arg[0])) |
| 879 | { |
| 880 | if (catch_command_errors (attach_command, pid_or_core_arg, |
| 881 | !batch_flag, RETURN_MASK_ALL) == 0) |
| 882 | catch_command_errors (core_file_command, pid_or_core_arg, |
| 883 | !batch_flag, RETURN_MASK_ALL); |
| 884 | } |
| 885 | else /* Can't be a pid, better be a corefile. */ |
| 886 | catch_command_errors (core_file_command, pid_or_core_arg, |
| 887 | !batch_flag, RETURN_MASK_ALL); |
| 888 | } |
| 889 | |
| 890 | if (ttyarg != NULL) |
| 891 | set_inferior_io_terminal (ttyarg); |
| 892 | |
| 893 | /* Error messages should no longer be distinguished with extra output. */ |
| 894 | error_pre_print = NULL; |
| 895 | quit_pre_print = NULL; |
| 896 | warning_pre_print = _("warning: "); |
| 897 | |
| 898 | /* Read the .gdbinit file in the current directory, *if* it isn't |
| 899 | the same as the $HOME/.gdbinit file (it should exist, also). */ |
| 900 | if (local_gdbinit && !inhibit_gdbinit) |
| 901 | catch_command_errors (source_script, local_gdbinit, 0, RETURN_MASK_ALL); |
| 902 | |
| 903 | /* Now that all .gdbinit's have been read and all -d options have been |
| 904 | processed, we can read any scripts mentioned in SYMARG. |
| 905 | We wait until now because it is common to add to the source search |
| 906 | path in local_gdbinit. */ |
| 907 | gdbpy_global_auto_load = save_auto_load; |
| 908 | ALL_OBJFILES (objfile) |
| 909 | load_auto_scripts_for_objfile (objfile); |
| 910 | |
| 911 | for (i = 0; i < ncmd; i++) |
| 912 | { |
| 913 | if (cmdarg[i].type == CMDARG_FILE) |
| 914 | catch_command_errors (source_script, cmdarg[i].string, |
| 915 | !batch_flag, RETURN_MASK_ALL); |
| 916 | else /* cmdarg[i].type == CMDARG_COMMAND */ |
| 917 | catch_command_errors (execute_command, cmdarg[i].string, |
| 918 | !batch_flag, RETURN_MASK_ALL); |
| 919 | } |
| 920 | xfree (cmdarg); |
| 921 | |
| 922 | /* Read in the old history after all the command files have been |
| 923 | read. */ |
| 924 | init_history (); |
| 925 | |
| 926 | if (batch_flag) |
| 927 | { |
| 928 | /* We have hit the end of the batch file. */ |
| 929 | quit_force (NULL, 0); |
| 930 | } |
| 931 | |
| 932 | /* Show time and/or space usage. */ |
| 933 | do_cleanups (pre_stat_chain); |
| 934 | |
| 935 | /* NOTE: cagney/1999-11-07: There is probably no reason for not |
| 936 | moving this loop and the code found in captured_command_loop() |
| 937 | into the command_loop() proper. The main thing holding back that |
| 938 | change - SET_TOP_LEVEL() - has been eliminated. */ |
| 939 | while (1) |
| 940 | { |
| 941 | catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL); |
| 942 | } |
| 943 | /* No exit -- exit is through quit_command. */ |
| 944 | } |
| 945 | |
| 946 | int |
| 947 | gdb_main (struct captured_main_args *args) |
| 948 | { |
| 949 | use_windows = args->use_windows; |
| 950 | catch_errors (captured_main, args, "", RETURN_MASK_ALL); |
| 951 | /* The only way to end up here is by an error (normal exit is |
| 952 | handled by quit_force()), hence always return an error status. */ |
| 953 | return 1; |
| 954 | } |
| 955 | |
| 956 | |
| 957 | /* Don't use *_filtered for printing help. We don't want to prompt |
| 958 | for continue no matter how small the screen or how much we're going |
| 959 | to print. */ |
| 960 | |
| 961 | static void |
| 962 | print_gdb_help (struct ui_file *stream) |
| 963 | { |
| 964 | char *system_gdbinit; |
| 965 | char *home_gdbinit; |
| 966 | char *local_gdbinit; |
| 967 | |
| 968 | get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit); |
| 969 | |
| 970 | fputs_unfiltered (_("\ |
| 971 | This is the GNU debugger. Usage:\n\n\ |
| 972 | gdb [options] [executable-file [core-file or process-id]]\n\ |
| 973 | gdb [options] --args executable-file [inferior-arguments ...]\n\n\ |
| 974 | Options:\n\n\ |
| 975 | "), stream); |
| 976 | fputs_unfiltered (_("\ |
| 977 | --args Arguments after executable-file are passed to inferior\n\ |
| 978 | "), stream); |
| 979 | fputs_unfiltered (_("\ |
| 980 | -b BAUDRATE Set serial port baud rate used for remote debugging.\n\ |
| 981 | --batch Exit after processing options.\n\ |
| 982 | --batch-silent As for --batch, but suppress all gdb stdout output.\n\ |
| 983 | --return-child-result\n\ |
| 984 | GDB exit code will be the child's exit code.\n\ |
| 985 | --cd=DIR Change current directory to DIR.\n\ |
| 986 | --command=FILE, -x Execute GDB commands from FILE.\n\ |
| 987 | --eval-command=COMMAND, -ex\n\ |
| 988 | Execute a single GDB command.\n\ |
| 989 | May be used multiple times and in conjunction\n\ |
| 990 | with --command.\n\ |
| 991 | --core=COREFILE Analyze the core dump COREFILE.\n\ |
| 992 | --pid=PID Attach to running process PID.\n\ |
| 993 | "), stream); |
| 994 | fputs_unfiltered (_("\ |
| 995 | --dbx DBX compatibility mode.\n\ |
| 996 | --directory=DIR Search for source files in DIR.\n\ |
| 997 | --epoch Output information used by epoch emacs-GDB interface.\n\ |
| 998 | --exec=EXECFILE Use EXECFILE as the executable.\n\ |
| 999 | --fullname Output information used by emacs-GDB interface.\n\ |
| 1000 | --help Print this message.\n\ |
| 1001 | "), stream); |
| 1002 | fputs_unfiltered (_("\ |
| 1003 | --interpreter=INTERP\n\ |
| 1004 | Select a specific interpreter / user interface\n\ |
| 1005 | "), stream); |
| 1006 | fputs_unfiltered (_("\ |
| 1007 | -l TIMEOUT Set timeout in seconds for remote debugging.\n\ |
| 1008 | --nw Do not use a window interface.\n\ |
| 1009 | --nx Do not read "), stream); |
| 1010 | fputs_unfiltered (gdbinit, stream); |
| 1011 | fputs_unfiltered (_(" file.\n\ |
| 1012 | --quiet Do not print version number on startup.\n\ |
| 1013 | --readnow Fully read symbol files on first access.\n\ |
| 1014 | "), stream); |
| 1015 | fputs_unfiltered (_("\ |
| 1016 | --se=FILE Use FILE as symbol file and executable file.\n\ |
| 1017 | --symbols=SYMFILE Read symbols from SYMFILE.\n\ |
| 1018 | --tty=TTY Use TTY for input/output by the program being debugged.\n\ |
| 1019 | "), stream); |
| 1020 | #if defined(TUI) |
| 1021 | fputs_unfiltered (_("\ |
| 1022 | --tui Use a terminal user interface.\n\ |
| 1023 | "), stream); |
| 1024 | #endif |
| 1025 | fputs_unfiltered (_("\ |
| 1026 | --version Print version information and then exit.\n\ |
| 1027 | -w Use a window interface.\n\ |
| 1028 | --write Set writing into executable and core files.\n\ |
| 1029 | --xdb XDB compatibility mode.\n\ |
| 1030 | "), stream); |
| 1031 | fputs_unfiltered (_("\n\ |
| 1032 | At startup, GDB reads the following init files and executes their commands:\n\ |
| 1033 | "), stream); |
| 1034 | if (system_gdbinit) |
| 1035 | fprintf_unfiltered (stream, _("\ |
| 1036 | * system-wide init file: %s\n\ |
| 1037 | "), system_gdbinit); |
| 1038 | if (home_gdbinit) |
| 1039 | fprintf_unfiltered (stream, _("\ |
| 1040 | * user-specific init file: %s\n\ |
| 1041 | "), home_gdbinit); |
| 1042 | if (local_gdbinit) |
| 1043 | fprintf_unfiltered (stream, _("\ |
| 1044 | * local init file: ./%s\n\ |
| 1045 | "), local_gdbinit); |
| 1046 | fputs_unfiltered (_("\n\ |
| 1047 | For more information, type \"help\" from within GDB, or consult the\n\ |
| 1048 | GDB manual (available as on-line info or a printed manual).\n\ |
| 1049 | "), stream); |
| 1050 | if (REPORT_BUGS_TO[0] && stream == gdb_stdout) |
| 1051 | fprintf_unfiltered (stream, _("\ |
| 1052 | Report bugs to \"%s\".\n\ |
| 1053 | "), REPORT_BUGS_TO); |
| 1054 | } |