| 1 | /* Top level stuff for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 1986-2019 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 3 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, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "top.h" |
| 22 | #include "target.h" |
| 23 | #include "inferior.h" |
| 24 | #include "symfile.h" |
| 25 | #include "gdbcore.h" |
| 26 | #include "getopt.h" |
| 27 | |
| 28 | #include <sys/types.h> |
| 29 | #include <sys/stat.h> |
| 30 | #include <ctype.h> |
| 31 | #include "event-loop.h" |
| 32 | #include "ui-out.h" |
| 33 | |
| 34 | #include "interps.h" |
| 35 | #include "main.h" |
| 36 | #include "source.h" |
| 37 | #include "cli/cli-cmds.h" |
| 38 | #include "objfiles.h" |
| 39 | #include "auto-load.h" |
| 40 | #include "maint.h" |
| 41 | |
| 42 | #include "filenames.h" |
| 43 | #include "common/filestuff.h" |
| 44 | #include <signal.h> |
| 45 | #include "event-top.h" |
| 46 | #include "infrun.h" |
| 47 | #include "common/signals-state-save-restore.h" |
| 48 | #include <vector> |
| 49 | #include "common/pathstuff.h" |
| 50 | #include "cli/cli-style.h" |
| 51 | |
| 52 | /* The selected interpreter. This will be used as a set command |
| 53 | variable, so it should always be malloc'ed - since |
| 54 | do_setshow_command will free it. */ |
| 55 | char *interpreter_p; |
| 56 | |
| 57 | /* Whether dbx commands will be handled. */ |
| 58 | int dbx_commands = 0; |
| 59 | |
| 60 | /* System root path, used to find libraries etc. */ |
| 61 | char *gdb_sysroot = 0; |
| 62 | |
| 63 | /* GDB datadir, used to store data files. */ |
| 64 | char *gdb_datadir = 0; |
| 65 | |
| 66 | /* Non-zero if GDB_DATADIR was provided on the command line. |
| 67 | This doesn't track whether data-directory is set later from the |
| 68 | command line, but we don't reread system.gdbinit when that happens. */ |
| 69 | static int gdb_datadir_provided = 0; |
| 70 | |
| 71 | /* If gdb was configured with --with-python=/path, |
| 72 | the possibly relocated path to python's lib directory. */ |
| 73 | char *python_libdir = 0; |
| 74 | |
| 75 | /* Target IO streams. */ |
| 76 | struct ui_file *gdb_stdtargin; |
| 77 | struct ui_file *gdb_stdtarg; |
| 78 | struct ui_file *gdb_stdtargerr; |
| 79 | |
| 80 | /* True if --batch or --batch-silent was seen. */ |
| 81 | int batch_flag = 0; |
| 82 | |
| 83 | /* Support for the --batch-silent option. */ |
| 84 | int batch_silent = 0; |
| 85 | |
| 86 | /* Support for --return-child-result option. |
| 87 | Set the default to -1 to return error in the case |
| 88 | that the program does not run or does not complete. */ |
| 89 | int return_child_result = 0; |
| 90 | int return_child_result_value = -1; |
| 91 | |
| 92 | |
| 93 | /* GDB as it has been invoked from the command line (i.e. argv[0]). */ |
| 94 | static char *gdb_program_name; |
| 95 | |
| 96 | /* Return read only pointer to GDB_PROGRAM_NAME. */ |
| 97 | const char * |
| 98 | get_gdb_program_name (void) |
| 99 | { |
| 100 | return gdb_program_name; |
| 101 | } |
| 102 | |
| 103 | static void print_gdb_help (struct ui_file *); |
| 104 | |
| 105 | /* Set the data-directory parameter to NEW_DATADIR. |
| 106 | If NEW_DATADIR is not a directory then a warning is printed. |
| 107 | We don't signal an error for backward compatibility. */ |
| 108 | |
| 109 | void |
| 110 | set_gdb_data_directory (const char *new_datadir) |
| 111 | { |
| 112 | struct stat st; |
| 113 | |
| 114 | if (stat (new_datadir, &st) < 0) |
| 115 | { |
| 116 | int save_errno = errno; |
| 117 | |
| 118 | fprintf_unfiltered (gdb_stderr, "Warning: "); |
| 119 | print_sys_errmsg (new_datadir, save_errno); |
| 120 | } |
| 121 | else if (!S_ISDIR (st.st_mode)) |
| 122 | warning (_("%s is not a directory."), new_datadir); |
| 123 | |
| 124 | xfree (gdb_datadir); |
| 125 | gdb_datadir = gdb_realpath (new_datadir).release (); |
| 126 | |
| 127 | /* gdb_realpath won't return an absolute path if the path doesn't exist, |
| 128 | but we still want to record an absolute path here. If the user entered |
| 129 | "../foo" and "../foo" doesn't exist then we'll record $(pwd)/../foo which |
| 130 | isn't canonical, but that's ok. */ |
| 131 | if (!IS_ABSOLUTE_PATH (gdb_datadir)) |
| 132 | { |
| 133 | gdb::unique_xmalloc_ptr<char> abs_datadir = gdb_abspath (gdb_datadir); |
| 134 | |
| 135 | xfree (gdb_datadir); |
| 136 | gdb_datadir = abs_datadir.release (); |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | /* Relocate a file or directory. PROGNAME is the name by which gdb |
| 141 | was invoked (i.e., argv[0]). INITIAL is the default value for the |
| 142 | file or directory. FLAG is true if the value is relocatable, false |
| 143 | otherwise. Returns a newly allocated string; this may return NULL |
| 144 | under the same conditions as make_relative_prefix. */ |
| 145 | |
| 146 | static char * |
| 147 | relocate_path (const char *progname, const char *initial, int flag) |
| 148 | { |
| 149 | if (flag) |
| 150 | return make_relative_prefix (progname, BINDIR, initial); |
| 151 | return xstrdup (initial); |
| 152 | } |
| 153 | |
| 154 | /* Like relocate_path, but specifically checks for a directory. |
| 155 | INITIAL is relocated according to the rules of relocate_path. If |
| 156 | the result is a directory, it is used; otherwise, INITIAL is used. |
| 157 | The chosen directory is then canonicalized using lrealpath. This |
| 158 | function always returns a newly-allocated string. */ |
| 159 | |
| 160 | char * |
| 161 | relocate_gdb_directory (const char *initial, int flag) |
| 162 | { |
| 163 | char *dir; |
| 164 | |
| 165 | dir = relocate_path (gdb_program_name, initial, flag); |
| 166 | if (dir) |
| 167 | { |
| 168 | struct stat s; |
| 169 | |
| 170 | if (*dir == '\0' || stat (dir, &s) != 0 || !S_ISDIR (s.st_mode)) |
| 171 | { |
| 172 | xfree (dir); |
| 173 | dir = NULL; |
| 174 | } |
| 175 | } |
| 176 | if (!dir) |
| 177 | dir = xstrdup (initial); |
| 178 | |
| 179 | /* Canonicalize the directory. */ |
| 180 | if (*dir) |
| 181 | { |
| 182 | char *canon_sysroot = lrealpath (dir); |
| 183 | |
| 184 | if (canon_sysroot) |
| 185 | { |
| 186 | xfree (dir); |
| 187 | dir = canon_sysroot; |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | return dir; |
| 192 | } |
| 193 | |
| 194 | /* Compute the locations of init files that GDB should source and |
| 195 | return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If |
| 196 | there is no system gdbinit (resp. home gdbinit and local gdbinit) |
| 197 | to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and |
| 198 | LOCAL_GDBINIT) is set to NULL. */ |
| 199 | static void |
| 200 | get_init_files (const char **system_gdbinit, |
| 201 | const char **home_gdbinit, |
| 202 | const char **local_gdbinit) |
| 203 | { |
| 204 | static const char *sysgdbinit = NULL; |
| 205 | static char *homeinit = NULL; |
| 206 | static const char *localinit = NULL; |
| 207 | static int initialized = 0; |
| 208 | |
| 209 | if (!initialized) |
| 210 | { |
| 211 | struct stat homebuf, cwdbuf, s; |
| 212 | const char *homedir; |
| 213 | |
| 214 | if (SYSTEM_GDBINIT[0]) |
| 215 | { |
| 216 | int datadir_len = strlen (GDB_DATADIR); |
| 217 | int sys_gdbinit_len = strlen (SYSTEM_GDBINIT); |
| 218 | char *relocated_sysgdbinit; |
| 219 | |
| 220 | /* If SYSTEM_GDBINIT lives in data-directory, and data-directory |
| 221 | has been provided, search for SYSTEM_GDBINIT there. */ |
| 222 | if (gdb_datadir_provided |
| 223 | && datadir_len < sys_gdbinit_len |
| 224 | && filename_ncmp (SYSTEM_GDBINIT, GDB_DATADIR, datadir_len) == 0 |
| 225 | && IS_DIR_SEPARATOR (SYSTEM_GDBINIT[datadir_len])) |
| 226 | { |
| 227 | /* Append the part of SYSTEM_GDBINIT that follows GDB_DATADIR |
| 228 | to gdb_datadir. */ |
| 229 | char *tmp_sys_gdbinit = xstrdup (&SYSTEM_GDBINIT[datadir_len]); |
| 230 | char *p; |
| 231 | |
| 232 | for (p = tmp_sys_gdbinit; IS_DIR_SEPARATOR (*p); ++p) |
| 233 | continue; |
| 234 | relocated_sysgdbinit = concat (gdb_datadir, SLASH_STRING, p, |
| 235 | (char *) NULL); |
| 236 | xfree (tmp_sys_gdbinit); |
| 237 | } |
| 238 | else |
| 239 | { |
| 240 | relocated_sysgdbinit = relocate_path (gdb_program_name, |
| 241 | SYSTEM_GDBINIT, |
| 242 | SYSTEM_GDBINIT_RELOCATABLE); |
| 243 | } |
| 244 | if (relocated_sysgdbinit && stat (relocated_sysgdbinit, &s) == 0) |
| 245 | sysgdbinit = relocated_sysgdbinit; |
| 246 | else |
| 247 | xfree (relocated_sysgdbinit); |
| 248 | } |
| 249 | |
| 250 | homedir = getenv ("HOME"); |
| 251 | |
| 252 | /* If the .gdbinit file in the current directory is the same as |
| 253 | the $HOME/.gdbinit file, it should not be sourced. homebuf |
| 254 | and cwdbuf are used in that purpose. Make sure that the stats |
| 255 | are zero in case one of them fails (this guarantees that they |
| 256 | won't match if either exists). */ |
| 257 | |
| 258 | memset (&homebuf, 0, sizeof (struct stat)); |
| 259 | memset (&cwdbuf, 0, sizeof (struct stat)); |
| 260 | |
| 261 | if (homedir) |
| 262 | { |
| 263 | homeinit = xstrprintf ("%s/%s", homedir, gdbinit); |
| 264 | if (stat (homeinit, &homebuf) != 0) |
| 265 | { |
| 266 | xfree (homeinit); |
| 267 | homeinit = NULL; |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | if (stat (gdbinit, &cwdbuf) == 0) |
| 272 | { |
| 273 | if (!homeinit |
| 274 | || memcmp ((char *) &homebuf, (char *) &cwdbuf, |
| 275 | sizeof (struct stat))) |
| 276 | localinit = gdbinit; |
| 277 | } |
| 278 | |
| 279 | initialized = 1; |
| 280 | } |
| 281 | |
| 282 | *system_gdbinit = sysgdbinit; |
| 283 | *home_gdbinit = homeinit; |
| 284 | *local_gdbinit = localinit; |
| 285 | } |
| 286 | |
| 287 | /* Try to set up an alternate signal stack for SIGSEGV handlers. |
| 288 | This allows us to handle SIGSEGV signals generated when the |
| 289 | normal process stack is exhausted. If this stack is not set |
| 290 | up (sigaltstack is unavailable or fails) and a SIGSEGV is |
| 291 | generated when the normal stack is exhausted then the program |
| 292 | will behave as though no SIGSEGV handler was installed. */ |
| 293 | |
| 294 | static void |
| 295 | setup_alternate_signal_stack (void) |
| 296 | { |
| 297 | #ifdef HAVE_SIGALTSTACK |
| 298 | stack_t ss; |
| 299 | |
| 300 | /* FreeBSD versions older than 11.0 use char * for ss_sp instead of |
| 301 | void *. This cast works with both types. */ |
| 302 | ss.ss_sp = (char *) xmalloc (SIGSTKSZ); |
| 303 | ss.ss_size = SIGSTKSZ; |
| 304 | ss.ss_flags = 0; |
| 305 | |
| 306 | sigaltstack(&ss, NULL); |
| 307 | #endif |
| 308 | } |
| 309 | |
| 310 | /* Call command_loop. */ |
| 311 | |
| 312 | /* Prevent inlining this function for the benefit of GDB's selftests |
| 313 | in the testsuite. Those tests want to run GDB under GDB and stop |
| 314 | here. */ |
| 315 | static void captured_command_loop () __attribute__((noinline)); |
| 316 | |
| 317 | static void |
| 318 | captured_command_loop () |
| 319 | { |
| 320 | struct ui *ui = current_ui; |
| 321 | |
| 322 | /* Top-level execution commands can be run in the background from |
| 323 | here on. */ |
| 324 | current_ui->async = 1; |
| 325 | |
| 326 | /* Give the interpreter a chance to print a prompt, if necessary */ |
| 327 | if (ui->prompt_state != PROMPT_BLOCKED) |
| 328 | interp_pre_command_loop (top_level_interpreter ()); |
| 329 | |
| 330 | /* Now it's time to start the event loop. */ |
| 331 | start_event_loop (); |
| 332 | |
| 333 | /* If the command_loop returned, normally (rather than threw an |
| 334 | error) we try to quit. If the quit is aborted, our caller |
| 335 | catches the signal and restarts the command loop. */ |
| 336 | quit_command (NULL, ui->instream == ui->stdin_stream); |
| 337 | } |
| 338 | |
| 339 | /* Handle command errors thrown from within catch_command_errors. */ |
| 340 | |
| 341 | static int |
| 342 | handle_command_errors (const struct gdb_exception &e) |
| 343 | { |
| 344 | if (e.reason < 0) |
| 345 | { |
| 346 | exception_print (gdb_stderr, e); |
| 347 | |
| 348 | /* If any exception escaped to here, we better enable stdin. |
| 349 | Otherwise, any command that calls async_disable_stdin, and |
| 350 | then throws, will leave stdin inoperable. */ |
| 351 | async_enable_stdin (); |
| 352 | return 0; |
| 353 | } |
| 354 | return 1; |
| 355 | } |
| 356 | |
| 357 | /* Type of the command callback passed to the const |
| 358 | catch_command_errors. */ |
| 359 | |
| 360 | typedef void (catch_command_errors_const_ftype) (const char *, int); |
| 361 | |
| 362 | /* Wrap calls to commands run before the event loop is started. */ |
| 363 | |
| 364 | static int |
| 365 | catch_command_errors (catch_command_errors_const_ftype command, |
| 366 | const char *arg, int from_tty) |
| 367 | { |
| 368 | try |
| 369 | { |
| 370 | int was_sync = current_ui->prompt_state == PROMPT_BLOCKED; |
| 371 | |
| 372 | command (arg, from_tty); |
| 373 | |
| 374 | maybe_wait_sync_command_done (was_sync); |
| 375 | } |
| 376 | catch (const gdb_exception &e) |
| 377 | { |
| 378 | return handle_command_errors (e); |
| 379 | } |
| 380 | |
| 381 | return 1; |
| 382 | } |
| 383 | |
| 384 | /* Adapter for symbol_file_add_main that translates 'from_tty' to a |
| 385 | symfile_add_flags. */ |
| 386 | |
| 387 | static void |
| 388 | symbol_file_add_main_adapter (const char *arg, int from_tty) |
| 389 | { |
| 390 | symfile_add_flags add_flags = 0; |
| 391 | |
| 392 | if (from_tty) |
| 393 | add_flags |= SYMFILE_VERBOSE; |
| 394 | |
| 395 | symbol_file_add_main (arg, add_flags); |
| 396 | } |
| 397 | |
| 398 | /* Perform validation of the '--readnow' and '--readnever' flags. */ |
| 399 | |
| 400 | static void |
| 401 | validate_readnow_readnever () |
| 402 | { |
| 403 | if (readnever_symbol_files && readnow_symbol_files) |
| 404 | { |
| 405 | error (_("%s: '--readnow' and '--readnever' cannot be " |
| 406 | "specified simultaneously"), |
| 407 | gdb_program_name); |
| 408 | } |
| 409 | } |
| 410 | |
| 411 | /* Type of this option. */ |
| 412 | enum cmdarg_kind |
| 413 | { |
| 414 | /* Option type -x. */ |
| 415 | CMDARG_FILE, |
| 416 | |
| 417 | /* Option type -ex. */ |
| 418 | CMDARG_COMMAND, |
| 419 | |
| 420 | /* Option type -ix. */ |
| 421 | CMDARG_INIT_FILE, |
| 422 | |
| 423 | /* Option type -iex. */ |
| 424 | CMDARG_INIT_COMMAND |
| 425 | }; |
| 426 | |
| 427 | /* Arguments of --command option and its counterpart. */ |
| 428 | struct cmdarg |
| 429 | { |
| 430 | cmdarg (cmdarg_kind type_, char *string_) |
| 431 | : type (type_), string (string_) |
| 432 | {} |
| 433 | |
| 434 | /* Type of this option. */ |
| 435 | enum cmdarg_kind type; |
| 436 | |
| 437 | /* Value of this option - filename or the GDB command itself. String memory |
| 438 | is not owned by this structure despite it is 'const'. */ |
| 439 | char *string; |
| 440 | }; |
| 441 | |
| 442 | static void |
| 443 | captured_main_1 (struct captured_main_args *context) |
| 444 | { |
| 445 | int argc = context->argc; |
| 446 | char **argv = context->argv; |
| 447 | |
| 448 | static int quiet = 0; |
| 449 | static int set_args = 0; |
| 450 | static int inhibit_home_gdbinit = 0; |
| 451 | |
| 452 | /* Pointers to various arguments from command line. */ |
| 453 | char *symarg = NULL; |
| 454 | char *execarg = NULL; |
| 455 | char *pidarg = NULL; |
| 456 | char *corearg = NULL; |
| 457 | char *pid_or_core_arg = NULL; |
| 458 | char *cdarg = NULL; |
| 459 | char *ttyarg = NULL; |
| 460 | |
| 461 | /* These are static so that we can take their address in an |
| 462 | initializer. */ |
| 463 | static int print_help; |
| 464 | static int print_version; |
| 465 | static int print_configuration; |
| 466 | |
| 467 | /* Pointers to all arguments of --command option. */ |
| 468 | std::vector<struct cmdarg> cmdarg_vec; |
| 469 | |
| 470 | /* All arguments of --directory option. */ |
| 471 | std::vector<char *> dirarg; |
| 472 | |
| 473 | /* gdb init files. */ |
| 474 | const char *system_gdbinit; |
| 475 | const char *home_gdbinit; |
| 476 | const char *local_gdbinit; |
| 477 | |
| 478 | int i; |
| 479 | int save_auto_load; |
| 480 | int ret = 1; |
| 481 | |
| 482 | #ifdef HAVE_USEFUL_SBRK |
| 483 | /* Set this before constructing scoped_command_stats. */ |
| 484 | lim_at_start = (char *) sbrk (0); |
| 485 | #endif |
| 486 | |
| 487 | scoped_command_stats stat_reporter (false); |
| 488 | |
| 489 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) |
| 490 | setlocale (LC_MESSAGES, ""); |
| 491 | #endif |
| 492 | #if defined (HAVE_SETLOCALE) |
| 493 | setlocale (LC_CTYPE, ""); |
| 494 | #endif |
| 495 | #ifdef ENABLE_NLS |
| 496 | bindtextdomain (PACKAGE, LOCALEDIR); |
| 497 | textdomain (PACKAGE); |
| 498 | #endif |
| 499 | |
| 500 | notice_open_fds (); |
| 501 | |
| 502 | saved_command_line = (char *) xstrdup (""); |
| 503 | |
| 504 | #ifdef __MINGW32__ |
| 505 | /* Ensure stderr is unbuffered. A Cygwin pty or pipe is implemented |
| 506 | as a Windows pipe, and Windows buffers on pipes. */ |
| 507 | setvbuf (stderr, NULL, _IONBF, BUFSIZ); |
| 508 | #endif |
| 509 | |
| 510 | /* Note: `error' cannot be called before this point, because the |
| 511 | caller will crash when trying to print the exception. */ |
| 512 | main_ui = new ui (stdin, stdout, stderr); |
| 513 | current_ui = main_ui; |
| 514 | |
| 515 | gdb_stdtargerr = gdb_stderr; /* for moment */ |
| 516 | gdb_stdtargin = gdb_stdin; /* for moment */ |
| 517 | |
| 518 | if (bfd_init () != BFD_INIT_MAGIC) |
| 519 | error (_("fatal error: libbfd ABI mismatch")); |
| 520 | |
| 521 | #ifdef __MINGW32__ |
| 522 | /* On Windows, argv[0] is not necessarily set to absolute form when |
| 523 | GDB is found along PATH, without which relocation doesn't work. */ |
| 524 | gdb_program_name = windows_get_absolute_argv0 (argv[0]); |
| 525 | #else |
| 526 | gdb_program_name = xstrdup (argv[0]); |
| 527 | #endif |
| 528 | |
| 529 | /* Prefix warning messages with the command name. */ |
| 530 | gdb::unique_xmalloc_ptr<char> tmp_warn_preprint |
| 531 | (xstrprintf ("%s: warning: ", gdb_program_name)); |
| 532 | warning_pre_print = tmp_warn_preprint.get (); |
| 533 | |
| 534 | current_directory = getcwd (NULL, 0); |
| 535 | if (current_directory == NULL) |
| 536 | perror_warning_with_name (_("error finding working directory")); |
| 537 | |
| 538 | /* Set the sysroot path. */ |
| 539 | gdb_sysroot = relocate_gdb_directory (TARGET_SYSTEM_ROOT, |
| 540 | TARGET_SYSTEM_ROOT_RELOCATABLE); |
| 541 | |
| 542 | if (gdb_sysroot == NULL || *gdb_sysroot == '\0') |
| 543 | { |
| 544 | xfree (gdb_sysroot); |
| 545 | gdb_sysroot = xstrdup (TARGET_SYSROOT_PREFIX); |
| 546 | } |
| 547 | |
| 548 | debug_file_directory = relocate_gdb_directory (DEBUGDIR, |
| 549 | DEBUGDIR_RELOCATABLE); |
| 550 | |
| 551 | gdb_datadir = relocate_gdb_directory (GDB_DATADIR, |
| 552 | GDB_DATADIR_RELOCATABLE); |
| 553 | |
| 554 | #ifdef WITH_PYTHON_PATH |
| 555 | { |
| 556 | /* For later use in helping Python find itself. */ |
| 557 | char *tmp = concat (WITH_PYTHON_PATH, SLASH_STRING, "lib", (char *) NULL); |
| 558 | |
| 559 | python_libdir = relocate_gdb_directory (tmp, PYTHON_PATH_RELOCATABLE); |
| 560 | xfree (tmp); |
| 561 | } |
| 562 | #endif |
| 563 | |
| 564 | #ifdef RELOC_SRCDIR |
| 565 | add_substitute_path_rule (RELOC_SRCDIR, |
| 566 | make_relative_prefix (gdb_program_name, BINDIR, |
| 567 | RELOC_SRCDIR)); |
| 568 | #endif |
| 569 | |
| 570 | /* There will always be an interpreter. Either the one passed into |
| 571 | this captured main, or one specified by the user at start up, or |
| 572 | the console. Initialize the interpreter to the one requested by |
| 573 | the application. */ |
| 574 | interpreter_p = xstrdup (context->interpreter_p); |
| 575 | |
| 576 | /* Parse arguments and options. */ |
| 577 | { |
| 578 | int c; |
| 579 | /* When var field is 0, use flag field to record the equivalent |
| 580 | short option (or arbitrary numbers starting at 10 for those |
| 581 | with no equivalent). */ |
| 582 | enum { |
| 583 | OPT_SE = 10, |
| 584 | OPT_CD, |
| 585 | OPT_ANNOTATE, |
| 586 | OPT_STATISTICS, |
| 587 | OPT_TUI, |
| 588 | OPT_NOWINDOWS, |
| 589 | OPT_WINDOWS, |
| 590 | OPT_IX, |
| 591 | OPT_IEX, |
| 592 | OPT_READNOW, |
| 593 | OPT_READNEVER |
| 594 | }; |
| 595 | static struct option long_options[] = |
| 596 | { |
| 597 | {"tui", no_argument, 0, OPT_TUI}, |
| 598 | {"dbx", no_argument, &dbx_commands, 1}, |
| 599 | {"readnow", no_argument, NULL, OPT_READNOW}, |
| 600 | {"readnever", no_argument, NULL, OPT_READNEVER}, |
| 601 | {"r", no_argument, NULL, OPT_READNOW}, |
| 602 | {"quiet", no_argument, &quiet, 1}, |
| 603 | {"q", no_argument, &quiet, 1}, |
| 604 | {"silent", no_argument, &quiet, 1}, |
| 605 | {"nh", no_argument, &inhibit_home_gdbinit, 1}, |
| 606 | {"nx", no_argument, &inhibit_gdbinit, 1}, |
| 607 | {"n", no_argument, &inhibit_gdbinit, 1}, |
| 608 | {"batch-silent", no_argument, 0, 'B'}, |
| 609 | {"batch", no_argument, &batch_flag, 1}, |
| 610 | |
| 611 | /* This is a synonym for "--annotate=1". --annotate is now |
| 612 | preferred, but keep this here for a long time because people |
| 613 | will be running emacses which use --fullname. */ |
| 614 | {"fullname", no_argument, 0, 'f'}, |
| 615 | {"f", no_argument, 0, 'f'}, |
| 616 | |
| 617 | {"annotate", required_argument, 0, OPT_ANNOTATE}, |
| 618 | {"help", no_argument, &print_help, 1}, |
| 619 | {"se", required_argument, 0, OPT_SE}, |
| 620 | {"symbols", required_argument, 0, 's'}, |
| 621 | {"s", required_argument, 0, 's'}, |
| 622 | {"exec", required_argument, 0, 'e'}, |
| 623 | {"e", required_argument, 0, 'e'}, |
| 624 | {"core", required_argument, 0, 'c'}, |
| 625 | {"c", required_argument, 0, 'c'}, |
| 626 | {"pid", required_argument, 0, 'p'}, |
| 627 | {"p", required_argument, 0, 'p'}, |
| 628 | {"command", required_argument, 0, 'x'}, |
| 629 | {"eval-command", required_argument, 0, 'X'}, |
| 630 | {"version", no_argument, &print_version, 1}, |
| 631 | {"configuration", no_argument, &print_configuration, 1}, |
| 632 | {"x", required_argument, 0, 'x'}, |
| 633 | {"ex", required_argument, 0, 'X'}, |
| 634 | {"init-command", required_argument, 0, OPT_IX}, |
| 635 | {"init-eval-command", required_argument, 0, OPT_IEX}, |
| 636 | {"ix", required_argument, 0, OPT_IX}, |
| 637 | {"iex", required_argument, 0, OPT_IEX}, |
| 638 | #ifdef GDBTK |
| 639 | {"tclcommand", required_argument, 0, 'z'}, |
| 640 | {"enable-external-editor", no_argument, 0, 'y'}, |
| 641 | {"editor-command", required_argument, 0, 'w'}, |
| 642 | #endif |
| 643 | {"ui", required_argument, 0, 'i'}, |
| 644 | {"interpreter", required_argument, 0, 'i'}, |
| 645 | {"i", required_argument, 0, 'i'}, |
| 646 | {"directory", required_argument, 0, 'd'}, |
| 647 | {"d", required_argument, 0, 'd'}, |
| 648 | {"data-directory", required_argument, 0, 'D'}, |
| 649 | {"D", required_argument, 0, 'D'}, |
| 650 | {"cd", required_argument, 0, OPT_CD}, |
| 651 | {"tty", required_argument, 0, 't'}, |
| 652 | {"baud", required_argument, 0, 'b'}, |
| 653 | {"b", required_argument, 0, 'b'}, |
| 654 | {"nw", no_argument, NULL, OPT_NOWINDOWS}, |
| 655 | {"nowindows", no_argument, NULL, OPT_NOWINDOWS}, |
| 656 | {"w", no_argument, NULL, OPT_WINDOWS}, |
| 657 | {"windows", no_argument, NULL, OPT_WINDOWS}, |
| 658 | {"statistics", no_argument, 0, OPT_STATISTICS}, |
| 659 | {"write", no_argument, &write_files, 1}, |
| 660 | {"args", no_argument, &set_args, 1}, |
| 661 | {"l", required_argument, 0, 'l'}, |
| 662 | {"return-child-result", no_argument, &return_child_result, 1}, |
| 663 | {0, no_argument, 0, 0} |
| 664 | }; |
| 665 | |
| 666 | while (1) |
| 667 | { |
| 668 | int option_index; |
| 669 | |
| 670 | c = getopt_long_only (argc, argv, "", |
| 671 | long_options, &option_index); |
| 672 | if (c == EOF || set_args) |
| 673 | break; |
| 674 | |
| 675 | /* Long option that takes an argument. */ |
| 676 | if (c == 0 && long_options[option_index].flag == 0) |
| 677 | c = long_options[option_index].val; |
| 678 | |
| 679 | switch (c) |
| 680 | { |
| 681 | case 0: |
| 682 | /* Long option that just sets a flag. */ |
| 683 | break; |
| 684 | case OPT_SE: |
| 685 | symarg = optarg; |
| 686 | execarg = optarg; |
| 687 | break; |
| 688 | case OPT_CD: |
| 689 | cdarg = optarg; |
| 690 | break; |
| 691 | case OPT_ANNOTATE: |
| 692 | /* FIXME: what if the syntax is wrong (e.g. not digits)? */ |
| 693 | annotation_level = atoi (optarg); |
| 694 | break; |
| 695 | case OPT_STATISTICS: |
| 696 | /* Enable the display of both time and space usage. */ |
| 697 | set_per_command_time (1); |
| 698 | set_per_command_space (1); |
| 699 | break; |
| 700 | case OPT_TUI: |
| 701 | /* --tui is equivalent to -i=tui. */ |
| 702 | #ifdef TUI |
| 703 | xfree (interpreter_p); |
| 704 | interpreter_p = xstrdup (INTERP_TUI); |
| 705 | #else |
| 706 | error (_("%s: TUI mode is not supported"), gdb_program_name); |
| 707 | #endif |
| 708 | break; |
| 709 | case OPT_WINDOWS: |
| 710 | /* FIXME: cagney/2003-03-01: Not sure if this option is |
| 711 | actually useful, and if it is, what it should do. */ |
| 712 | #ifdef GDBTK |
| 713 | /* --windows is equivalent to -i=insight. */ |
| 714 | xfree (interpreter_p); |
| 715 | interpreter_p = xstrdup (INTERP_INSIGHT); |
| 716 | #endif |
| 717 | break; |
| 718 | case OPT_NOWINDOWS: |
| 719 | /* -nw is equivalent to -i=console. */ |
| 720 | xfree (interpreter_p); |
| 721 | interpreter_p = xstrdup (INTERP_CONSOLE); |
| 722 | break; |
| 723 | case 'f': |
| 724 | annotation_level = 1; |
| 725 | break; |
| 726 | case 's': |
| 727 | symarg = optarg; |
| 728 | break; |
| 729 | case 'e': |
| 730 | execarg = optarg; |
| 731 | break; |
| 732 | case 'c': |
| 733 | corearg = optarg; |
| 734 | break; |
| 735 | case 'p': |
| 736 | pidarg = optarg; |
| 737 | break; |
| 738 | case 'x': |
| 739 | cmdarg_vec.emplace_back (CMDARG_FILE, optarg); |
| 740 | break; |
| 741 | case 'X': |
| 742 | cmdarg_vec.emplace_back (CMDARG_COMMAND, optarg); |
| 743 | break; |
| 744 | case OPT_IX: |
| 745 | cmdarg_vec.emplace_back (CMDARG_INIT_FILE, optarg); |
| 746 | break; |
| 747 | case OPT_IEX: |
| 748 | cmdarg_vec.emplace_back (CMDARG_INIT_COMMAND, optarg); |
| 749 | break; |
| 750 | case 'B': |
| 751 | batch_flag = batch_silent = 1; |
| 752 | gdb_stdout = new null_file (); |
| 753 | break; |
| 754 | case 'D': |
| 755 | if (optarg[0] == '\0') |
| 756 | error (_("%s: empty path for `--data-directory'"), |
| 757 | gdb_program_name); |
| 758 | set_gdb_data_directory (optarg); |
| 759 | gdb_datadir_provided = 1; |
| 760 | break; |
| 761 | #ifdef GDBTK |
| 762 | case 'z': |
| 763 | { |
| 764 | extern int gdbtk_test (char *); |
| 765 | |
| 766 | if (!gdbtk_test (optarg)) |
| 767 | error (_("%s: unable to load tclcommand file \"%s\""), |
| 768 | gdb_program_name, optarg); |
| 769 | break; |
| 770 | } |
| 771 | case 'y': |
| 772 | /* Backwards compatibility only. */ |
| 773 | break; |
| 774 | case 'w': |
| 775 | { |
| 776 | /* Set the external editor commands when gdb is farming out files |
| 777 | to be edited by another program. */ |
| 778 | extern char *external_editor_command; |
| 779 | |
| 780 | external_editor_command = xstrdup (optarg); |
| 781 | break; |
| 782 | } |
| 783 | #endif /* GDBTK */ |
| 784 | case 'i': |
| 785 | xfree (interpreter_p); |
| 786 | interpreter_p = xstrdup (optarg); |
| 787 | break; |
| 788 | case 'd': |
| 789 | dirarg.push_back (optarg); |
| 790 | break; |
| 791 | case 't': |
| 792 | ttyarg = optarg; |
| 793 | break; |
| 794 | case 'q': |
| 795 | quiet = 1; |
| 796 | break; |
| 797 | case 'b': |
| 798 | { |
| 799 | int rate; |
| 800 | char *p; |
| 801 | |
| 802 | rate = strtol (optarg, &p, 0); |
| 803 | if (rate == 0 && p == optarg) |
| 804 | warning (_("could not set baud rate to `%s'."), |
| 805 | optarg); |
| 806 | else |
| 807 | baud_rate = rate; |
| 808 | } |
| 809 | break; |
| 810 | case 'l': |
| 811 | { |
| 812 | int timeout; |
| 813 | char *p; |
| 814 | |
| 815 | timeout = strtol (optarg, &p, 0); |
| 816 | if (timeout == 0 && p == optarg) |
| 817 | warning (_("could not set timeout limit to `%s'."), |
| 818 | optarg); |
| 819 | else |
| 820 | remote_timeout = timeout; |
| 821 | } |
| 822 | break; |
| 823 | |
| 824 | case OPT_READNOW: |
| 825 | { |
| 826 | readnow_symbol_files = 1; |
| 827 | validate_readnow_readnever (); |
| 828 | } |
| 829 | break; |
| 830 | |
| 831 | case OPT_READNEVER: |
| 832 | { |
| 833 | readnever_symbol_files = 1; |
| 834 | validate_readnow_readnever (); |
| 835 | } |
| 836 | break; |
| 837 | |
| 838 | case '?': |
| 839 | error (_("Use `%s --help' for a complete list of options."), |
| 840 | gdb_program_name); |
| 841 | } |
| 842 | } |
| 843 | |
| 844 | if (batch_flag) |
| 845 | { |
| 846 | quiet = 1; |
| 847 | |
| 848 | /* Disable all output styling when running in batch mode. */ |
| 849 | cli_styling = 0; |
| 850 | } |
| 851 | } |
| 852 | |
| 853 | save_original_signals_state (quiet); |
| 854 | |
| 855 | /* Try to set up an alternate signal stack for SIGSEGV handlers. */ |
| 856 | setup_alternate_signal_stack (); |
| 857 | |
| 858 | /* Initialize all files. */ |
| 859 | gdb_init (gdb_program_name); |
| 860 | |
| 861 | /* Now that gdb_init has created the initial inferior, we're in |
| 862 | position to set args for that inferior. */ |
| 863 | if (set_args) |
| 864 | { |
| 865 | /* The remaining options are the command-line options for the |
| 866 | inferior. The first one is the sym/exec file, and the rest |
| 867 | are arguments. */ |
| 868 | if (optind >= argc) |
| 869 | error (_("%s: `--args' specified but no program specified"), |
| 870 | gdb_program_name); |
| 871 | |
| 872 | symarg = argv[optind]; |
| 873 | execarg = argv[optind]; |
| 874 | ++optind; |
| 875 | set_inferior_args_vector (argc - optind, &argv[optind]); |
| 876 | } |
| 877 | else |
| 878 | { |
| 879 | /* OK, that's all the options. */ |
| 880 | |
| 881 | /* The first argument, if specified, is the name of the |
| 882 | executable. */ |
| 883 | if (optind < argc) |
| 884 | { |
| 885 | symarg = argv[optind]; |
| 886 | execarg = argv[optind]; |
| 887 | optind++; |
| 888 | } |
| 889 | |
| 890 | /* If the user hasn't already specified a PID or the name of a |
| 891 | core file, then a second optional argument is allowed. If |
| 892 | present, this argument should be interpreted as either a |
| 893 | PID or a core file, whichever works. */ |
| 894 | if (pidarg == NULL && corearg == NULL && optind < argc) |
| 895 | { |
| 896 | pid_or_core_arg = argv[optind]; |
| 897 | optind++; |
| 898 | } |
| 899 | |
| 900 | /* Any argument left on the command line is unexpected and |
| 901 | will be ignored. Inform the user. */ |
| 902 | if (optind < argc) |
| 903 | fprintf_unfiltered (gdb_stderr, |
| 904 | _("Excess command line " |
| 905 | "arguments ignored. (%s%s)\n"), |
| 906 | argv[optind], |
| 907 | (optind == argc - 1) ? "" : " ..."); |
| 908 | } |
| 909 | |
| 910 | /* Lookup gdbinit files. Note that the gdbinit file name may be |
| 911 | overriden during file initialization, so get_init_files should be |
| 912 | called after gdb_init. */ |
| 913 | get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit); |
| 914 | |
| 915 | /* Do these (and anything which might call wrap_here or *_filtered) |
| 916 | after initialize_all_files() but before the interpreter has been |
| 917 | installed. Otherwize the help/version messages will be eaten by |
| 918 | the interpreter's output handler. */ |
| 919 | |
| 920 | if (print_version) |
| 921 | { |
| 922 | print_gdb_version (gdb_stdout, false); |
| 923 | wrap_here (""); |
| 924 | printf_filtered ("\n"); |
| 925 | exit (0); |
| 926 | } |
| 927 | |
| 928 | if (print_help) |
| 929 | { |
| 930 | print_gdb_help (gdb_stdout); |
| 931 | fputs_unfiltered ("\n", gdb_stdout); |
| 932 | exit (0); |
| 933 | } |
| 934 | |
| 935 | if (print_configuration) |
| 936 | { |
| 937 | print_gdb_configuration (gdb_stdout); |
| 938 | wrap_here (""); |
| 939 | printf_filtered ("\n"); |
| 940 | exit (0); |
| 941 | } |
| 942 | |
| 943 | /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets |
| 944 | GDB retain the old MI1 interpreter startup behavior. Output the |
| 945 | copyright message before the interpreter is installed. That way |
| 946 | it isn't encapsulated in MI output. */ |
| 947 | if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0) |
| 948 | { |
| 949 | /* Print all the junk at the top, with trailing "..." if we are |
| 950 | about to read a symbol file (possibly slowly). */ |
| 951 | print_gdb_version (gdb_stdout, true); |
| 952 | if (symarg) |
| 953 | printf_filtered (".."); |
| 954 | wrap_here (""); |
| 955 | printf_filtered ("\n"); |
| 956 | gdb_flush (gdb_stdout); /* Force to screen during slow |
| 957 | operations. */ |
| 958 | } |
| 959 | |
| 960 | /* Install the default UI. All the interpreters should have had a |
| 961 | look at things by now. Initialize the default interpreter. */ |
| 962 | set_top_level_interpreter (interpreter_p); |
| 963 | |
| 964 | /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets |
| 965 | GDB retain the old MI1 interpreter startup behavior. Output the |
| 966 | copyright message after the interpreter is installed when it is |
| 967 | any sane interpreter. */ |
| 968 | if (!quiet && !current_interp_named_p (INTERP_MI1)) |
| 969 | { |
| 970 | /* Print all the junk at the top, with trailing "..." if we are |
| 971 | about to read a symbol file (possibly slowly). */ |
| 972 | print_gdb_version (gdb_stdout, true); |
| 973 | if (symarg) |
| 974 | printf_filtered (".."); |
| 975 | wrap_here (""); |
| 976 | printf_filtered ("\n"); |
| 977 | gdb_flush (gdb_stdout); /* Force to screen during slow |
| 978 | operations. */ |
| 979 | } |
| 980 | |
| 981 | /* Set off error and warning messages with a blank line. */ |
| 982 | tmp_warn_preprint.reset (); |
| 983 | warning_pre_print = _("\nwarning: "); |
| 984 | |
| 985 | /* Read and execute the system-wide gdbinit file, if it exists. |
| 986 | This is done *before* all the command line arguments are |
| 987 | processed; it sets global parameters, which are independent of |
| 988 | what file you are debugging or what directory you are in. */ |
| 989 | if (system_gdbinit && !inhibit_gdbinit) |
| 990 | ret = catch_command_errors (source_script, system_gdbinit, 0); |
| 991 | |
| 992 | /* Read and execute $HOME/.gdbinit file, if it exists. This is done |
| 993 | *before* all the command line arguments are processed; it sets |
| 994 | global parameters, which are independent of what file you are |
| 995 | debugging or what directory you are in. */ |
| 996 | |
| 997 | if (home_gdbinit && !inhibit_gdbinit && !inhibit_home_gdbinit) |
| 998 | ret = catch_command_errors (source_script, home_gdbinit, 0); |
| 999 | |
| 1000 | /* Process '-ix' and '-iex' options early. */ |
| 1001 | for (i = 0; i < cmdarg_vec.size (); i++) |
| 1002 | { |
| 1003 | const struct cmdarg &cmdarg_p = cmdarg_vec[i]; |
| 1004 | |
| 1005 | switch (cmdarg_p.type) |
| 1006 | { |
| 1007 | case CMDARG_INIT_FILE: |
| 1008 | ret = catch_command_errors (source_script, cmdarg_p.string, |
| 1009 | !batch_flag); |
| 1010 | break; |
| 1011 | case CMDARG_INIT_COMMAND: |
| 1012 | ret = catch_command_errors (execute_command, cmdarg_p.string, |
| 1013 | !batch_flag); |
| 1014 | break; |
| 1015 | } |
| 1016 | } |
| 1017 | |
| 1018 | /* Now perform all the actions indicated by the arguments. */ |
| 1019 | if (cdarg != NULL) |
| 1020 | { |
| 1021 | ret = catch_command_errors (cd_command, cdarg, 0); |
| 1022 | } |
| 1023 | |
| 1024 | for (i = 0; i < dirarg.size (); i++) |
| 1025 | ret = catch_command_errors (directory_switch, dirarg[i], 0); |
| 1026 | |
| 1027 | /* Skip auto-loading section-specified scripts until we've sourced |
| 1028 | local_gdbinit (which is often used to augment the source search |
| 1029 | path). */ |
| 1030 | save_auto_load = global_auto_load; |
| 1031 | global_auto_load = 0; |
| 1032 | |
| 1033 | if (execarg != NULL |
| 1034 | && symarg != NULL |
| 1035 | && strcmp (execarg, symarg) == 0) |
| 1036 | { |
| 1037 | /* The exec file and the symbol-file are the same. If we can't |
| 1038 | open it, better only print one error message. |
| 1039 | catch_command_errors returns non-zero on success! */ |
| 1040 | ret = catch_command_errors (exec_file_attach, execarg, |
| 1041 | !batch_flag); |
| 1042 | if (ret != 0) |
| 1043 | ret = catch_command_errors (symbol_file_add_main_adapter, |
| 1044 | symarg, !batch_flag); |
| 1045 | } |
| 1046 | else |
| 1047 | { |
| 1048 | if (execarg != NULL) |
| 1049 | ret = catch_command_errors (exec_file_attach, execarg, |
| 1050 | !batch_flag); |
| 1051 | if (symarg != NULL) |
| 1052 | ret = catch_command_errors (symbol_file_add_main_adapter, |
| 1053 | symarg, !batch_flag); |
| 1054 | } |
| 1055 | |
| 1056 | if (corearg && pidarg) |
| 1057 | error (_("Can't attach to process and specify " |
| 1058 | "a core file at the same time.")); |
| 1059 | |
| 1060 | if (corearg != NULL) |
| 1061 | { |
| 1062 | ret = catch_command_errors (core_file_command, corearg, |
| 1063 | !batch_flag); |
| 1064 | } |
| 1065 | else if (pidarg != NULL) |
| 1066 | { |
| 1067 | ret = catch_command_errors (attach_command, pidarg, !batch_flag); |
| 1068 | } |
| 1069 | else if (pid_or_core_arg) |
| 1070 | { |
| 1071 | /* The user specified 'gdb program pid' or gdb program core'. |
| 1072 | If pid_or_core_arg's first character is a digit, try attach |
| 1073 | first and then corefile. Otherwise try just corefile. */ |
| 1074 | |
| 1075 | if (isdigit (pid_or_core_arg[0])) |
| 1076 | { |
| 1077 | ret = catch_command_errors (attach_command, pid_or_core_arg, |
| 1078 | !batch_flag); |
| 1079 | if (ret == 0) |
| 1080 | ret = catch_command_errors (core_file_command, |
| 1081 | pid_or_core_arg, |
| 1082 | !batch_flag); |
| 1083 | } |
| 1084 | else |
| 1085 | { |
| 1086 | /* Can't be a pid, better be a corefile. */ |
| 1087 | ret = catch_command_errors (core_file_command, |
| 1088 | pid_or_core_arg, |
| 1089 | !batch_flag); |
| 1090 | } |
| 1091 | } |
| 1092 | |
| 1093 | if (ttyarg != NULL) |
| 1094 | set_inferior_io_terminal (ttyarg); |
| 1095 | |
| 1096 | /* Error messages should no longer be distinguished with extra output. */ |
| 1097 | warning_pre_print = _("warning: "); |
| 1098 | |
| 1099 | /* Read the .gdbinit file in the current directory, *if* it isn't |
| 1100 | the same as the $HOME/.gdbinit file (it should exist, also). */ |
| 1101 | if (local_gdbinit) |
| 1102 | { |
| 1103 | auto_load_local_gdbinit_pathname |
| 1104 | = gdb_realpath (local_gdbinit).release (); |
| 1105 | |
| 1106 | if (!inhibit_gdbinit && auto_load_local_gdbinit |
| 1107 | && file_is_auto_load_safe (local_gdbinit, |
| 1108 | _("auto-load: Loading .gdbinit " |
| 1109 | "file \"%s\".\n"), |
| 1110 | local_gdbinit)) |
| 1111 | { |
| 1112 | auto_load_local_gdbinit_loaded = 1; |
| 1113 | |
| 1114 | ret = catch_command_errors (source_script, local_gdbinit, 0); |
| 1115 | } |
| 1116 | } |
| 1117 | |
| 1118 | /* Now that all .gdbinit's have been read and all -d options have been |
| 1119 | processed, we can read any scripts mentioned in SYMARG. |
| 1120 | We wait until now because it is common to add to the source search |
| 1121 | path in local_gdbinit. */ |
| 1122 | global_auto_load = save_auto_load; |
| 1123 | for (objfile *objfile : current_program_space->objfiles ()) |
| 1124 | load_auto_scripts_for_objfile (objfile); |
| 1125 | |
| 1126 | /* Process '-x' and '-ex' options. */ |
| 1127 | for (i = 0; i < cmdarg_vec.size (); i++) |
| 1128 | { |
| 1129 | const struct cmdarg &cmdarg_p = cmdarg_vec[i]; |
| 1130 | |
| 1131 | switch (cmdarg_p.type) |
| 1132 | { |
| 1133 | case CMDARG_FILE: |
| 1134 | ret = catch_command_errors (source_script, cmdarg_p.string, |
| 1135 | !batch_flag); |
| 1136 | break; |
| 1137 | case CMDARG_COMMAND: |
| 1138 | ret = catch_command_errors (execute_command, cmdarg_p.string, |
| 1139 | !batch_flag); |
| 1140 | break; |
| 1141 | } |
| 1142 | } |
| 1143 | |
| 1144 | /* Read in the old history after all the command files have been |
| 1145 | read. */ |
| 1146 | init_history (); |
| 1147 | |
| 1148 | if (batch_flag) |
| 1149 | { |
| 1150 | int error_status = EXIT_FAILURE; |
| 1151 | int *exit_arg = ret == 0 ? &error_status : NULL; |
| 1152 | |
| 1153 | /* We have hit the end of the batch file. */ |
| 1154 | quit_force (exit_arg, 0); |
| 1155 | } |
| 1156 | } |
| 1157 | |
| 1158 | static void |
| 1159 | captured_main (void *data) |
| 1160 | { |
| 1161 | struct captured_main_args *context = (struct captured_main_args *) data; |
| 1162 | |
| 1163 | captured_main_1 (context); |
| 1164 | |
| 1165 | /* NOTE: cagney/1999-11-07: There is probably no reason for not |
| 1166 | moving this loop and the code found in captured_command_loop() |
| 1167 | into the command_loop() proper. The main thing holding back that |
| 1168 | change - SET_TOP_LEVEL() - has been eliminated. */ |
| 1169 | while (1) |
| 1170 | { |
| 1171 | try |
| 1172 | { |
| 1173 | captured_command_loop (); |
| 1174 | } |
| 1175 | catch (const gdb_exception &ex) |
| 1176 | { |
| 1177 | exception_print (gdb_stderr, ex); |
| 1178 | } |
| 1179 | } |
| 1180 | /* No exit -- exit is through quit_command. */ |
| 1181 | } |
| 1182 | |
| 1183 | int |
| 1184 | gdb_main (struct captured_main_args *args) |
| 1185 | { |
| 1186 | try |
| 1187 | { |
| 1188 | captured_main (args); |
| 1189 | } |
| 1190 | catch (const gdb_exception &ex) |
| 1191 | { |
| 1192 | exception_print (gdb_stderr, ex); |
| 1193 | } |
| 1194 | |
| 1195 | /* The only way to end up here is by an error (normal exit is |
| 1196 | handled by quit_force()), hence always return an error status. */ |
| 1197 | return 1; |
| 1198 | } |
| 1199 | |
| 1200 | |
| 1201 | /* Don't use *_filtered for printing help. We don't want to prompt |
| 1202 | for continue no matter how small the screen or how much we're going |
| 1203 | to print. */ |
| 1204 | |
| 1205 | static void |
| 1206 | print_gdb_help (struct ui_file *stream) |
| 1207 | { |
| 1208 | const char *system_gdbinit; |
| 1209 | const char *home_gdbinit; |
| 1210 | const char *local_gdbinit; |
| 1211 | |
| 1212 | get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit); |
| 1213 | |
| 1214 | /* Note: The options in the list below are only approximately sorted |
| 1215 | in the alphabetical order, so as to group closely related options |
| 1216 | together. */ |
| 1217 | fputs_unfiltered (_("\ |
| 1218 | This is the GNU debugger. Usage:\n\n\ |
| 1219 | gdb [options] [executable-file [core-file or process-id]]\n\ |
| 1220 | gdb [options] --args executable-file [inferior-arguments ...]\n\n\ |
| 1221 | "), stream); |
| 1222 | fputs_unfiltered (_("\ |
| 1223 | Selection of debuggee and its files:\n\n\ |
| 1224 | --args Arguments after executable-file are passed to inferior\n\ |
| 1225 | --core=COREFILE Analyze the core dump COREFILE.\n\ |
| 1226 | --exec=EXECFILE Use EXECFILE as the executable.\n\ |
| 1227 | --pid=PID Attach to running process PID.\n\ |
| 1228 | --directory=DIR Search for source files in DIR.\n\ |
| 1229 | --se=FILE Use FILE as symbol file and executable file.\n\ |
| 1230 | --symbols=SYMFILE Read symbols from SYMFILE.\n\ |
| 1231 | --readnow Fully read symbol files on first access.\n\ |
| 1232 | --readnever Do not read symbol files.\n\ |
| 1233 | --write Set writing into executable and core files.\n\n\ |
| 1234 | "), stream); |
| 1235 | fputs_unfiltered (_("\ |
| 1236 | Initial commands and command files:\n\n\ |
| 1237 | --command=FILE, -x Execute GDB commands from FILE.\n\ |
| 1238 | --init-command=FILE, -ix\n\ |
| 1239 | Like -x but execute commands before loading inferior.\n\ |
| 1240 | --eval-command=COMMAND, -ex\n\ |
| 1241 | Execute a single GDB command.\n\ |
| 1242 | May be used multiple times and in conjunction\n\ |
| 1243 | with --command.\n\ |
| 1244 | --init-eval-command=COMMAND, -iex\n\ |
| 1245 | Like -ex but before loading inferior.\n\ |
| 1246 | --nh Do not read ~/.gdbinit.\n\ |
| 1247 | --nx Do not read any .gdbinit files in any directory.\n\n\ |
| 1248 | "), stream); |
| 1249 | fputs_unfiltered (_("\ |
| 1250 | Output and user interface control:\n\n\ |
| 1251 | --fullname Output information used by emacs-GDB interface.\n\ |
| 1252 | --interpreter=INTERP\n\ |
| 1253 | Select a specific interpreter / user interface\n\ |
| 1254 | --tty=TTY Use TTY for input/output by the program being debugged.\n\ |
| 1255 | -w Use the GUI interface.\n\ |
| 1256 | --nw Do not use the GUI interface.\n\ |
| 1257 | "), stream); |
| 1258 | #if defined(TUI) |
| 1259 | fputs_unfiltered (_("\ |
| 1260 | --tui Use a terminal user interface.\n\ |
| 1261 | "), stream); |
| 1262 | #endif |
| 1263 | fputs_unfiltered (_("\ |
| 1264 | --dbx DBX compatibility mode.\n\ |
| 1265 | -q, --quiet, --silent\n\ |
| 1266 | Do not print version number on startup.\n\n\ |
| 1267 | "), stream); |
| 1268 | fputs_unfiltered (_("\ |
| 1269 | Operating modes:\n\n\ |
| 1270 | --batch Exit after processing options.\n\ |
| 1271 | --batch-silent Like --batch, but suppress all gdb stdout output.\n\ |
| 1272 | --return-child-result\n\ |
| 1273 | GDB exit code will be the child's exit code.\n\ |
| 1274 | --configuration Print details about GDB configuration and then exit.\n\ |
| 1275 | --help Print this message and then exit.\n\ |
| 1276 | --version Print version information and then exit.\n\n\ |
| 1277 | Remote debugging options:\n\n\ |
| 1278 | -b BAUDRATE Set serial port baud rate used for remote debugging.\n\ |
| 1279 | -l TIMEOUT Set timeout in seconds for remote debugging.\n\n\ |
| 1280 | Other options:\n\n\ |
| 1281 | --cd=DIR Change current directory to DIR.\n\ |
| 1282 | --data-directory=DIR, -D\n\ |
| 1283 | Set GDB's data-directory to DIR.\n\ |
| 1284 | "), stream); |
| 1285 | fputs_unfiltered (_("\n\ |
| 1286 | At startup, GDB reads the following init files and executes their commands:\n\ |
| 1287 | "), stream); |
| 1288 | if (system_gdbinit) |
| 1289 | fprintf_unfiltered (stream, _("\ |
| 1290 | * system-wide init file: %s\n\ |
| 1291 | "), system_gdbinit); |
| 1292 | if (home_gdbinit) |
| 1293 | fprintf_unfiltered (stream, _("\ |
| 1294 | * user-specific init file: %s\n\ |
| 1295 | "), home_gdbinit); |
| 1296 | if (local_gdbinit) |
| 1297 | fprintf_unfiltered (stream, _("\ |
| 1298 | * local init file (see also 'set auto-load local-gdbinit'): ./%s\n\ |
| 1299 | "), local_gdbinit); |
| 1300 | fputs_unfiltered (_("\n\ |
| 1301 | For more information, type \"help\" from within GDB, or consult the\n\ |
| 1302 | GDB manual (available as on-line info or a printed manual).\n\ |
| 1303 | "), stream); |
| 1304 | if (REPORT_BUGS_TO[0] && stream == gdb_stdout) |
| 1305 | fprintf_unfiltered (stream, _("\ |
| 1306 | Report bugs to \"%s\".\n\ |
| 1307 | "), REPORT_BUGS_TO); |
| 1308 | } |