1 /* Top level stuff for GDB, the GNU debugger.
3 Copyright (C) 1986-2005, 2007-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
27 #include "exceptions.h"
30 #include <sys/types.h>
34 #include "gdb_string.h"
35 #include "event-loop.h"
41 #include "cli/cli-cmds.h"
42 #include "python/python.h"
44 #include "auto-load.h"
46 /* The selected interpreter. This will be used as a set command
47 variable, so it should always be malloc'ed - since
48 do_setshow_command will free it. */
51 /* Whether xdb commands will be handled. */
54 /* Whether dbx commands will be handled. */
57 /* System root path, used to find libraries etc. */
58 char *gdb_sysroot = 0;
60 /* GDB datadir, used to store data files. */
61 char *gdb_datadir = 0;
63 /* If gdb was configured with --with-python=/path,
64 the possibly relocated path to python's lib directory. */
65 char *python_libdir = 0;
67 struct ui_file *gdb_stdout;
68 struct ui_file *gdb_stderr;
69 struct ui_file *gdb_stdlog;
70 struct ui_file *gdb_stdin;
71 /* Target IO streams. */
72 struct ui_file *gdb_stdtargin;
73 struct ui_file *gdb_stdtarg;
74 struct ui_file *gdb_stdtargerr;
76 /* True if --batch or --batch-silent was seen. */
79 /* Support for the --batch-silent option. */
82 /* Support for --return-child-result option.
83 Set the default to -1 to return error in the case
84 that the program does not run or does not complete. */
85 int return_child_result = 0;
86 int return_child_result_value = -1;
89 /* GDB as it has been invoked from the command line (i.e. argv[0]). */
90 static char *gdb_program_name;
92 static void print_gdb_help (struct ui_file *);
94 /* Relocate a file or directory. PROGNAME is the name by which gdb
95 was invoked (i.e., argv[0]). INITIAL is the default value for the
96 file or directory. FLAG is true if the value is relocatable, false
97 otherwise. Returns a newly allocated string; this may return NULL
98 under the same conditions as make_relative_prefix. */
101 relocate_path (const char *progname, const char *initial, int flag)
104 return make_relative_prefix (progname, BINDIR, initial);
105 return xstrdup (initial);
108 /* Like relocate_path, but specifically checks for a directory.
109 INITIAL is relocated according to the rules of relocate_path. If
110 the result is a directory, it is used; otherwise, INITIAL is used.
111 The chosen directory is then canonicalized using lrealpath. This
112 function always returns a newly-allocated string. */
115 relocate_gdb_directory (const char *initial, int flag)
119 dir = relocate_path (gdb_program_name, initial, flag);
124 if (stat (dir, &s) != 0 || !S_ISDIR (s.st_mode))
131 dir = xstrdup (initial);
133 /* Canonicalize the directory. */
136 char *canon_sysroot = lrealpath (dir);
148 /* Compute the locations of init files that GDB should source and
149 return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If
150 there is no system gdbinit (resp. home gdbinit and local gdbinit)
151 to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
152 LOCAL_GDBINIT) is set to NULL. */
154 get_init_files (char **system_gdbinit,
156 char **local_gdbinit)
158 static char *sysgdbinit = NULL;
159 static char *homeinit = NULL;
160 static char *localinit = NULL;
161 static int initialized = 0;
165 struct stat homebuf, cwdbuf, s;
166 char *homedir, *relocated_sysgdbinit;
168 if (SYSTEM_GDBINIT[0])
170 relocated_sysgdbinit = relocate_path (gdb_program_name,
172 SYSTEM_GDBINIT_RELOCATABLE);
173 if (relocated_sysgdbinit && stat (relocated_sysgdbinit, &s) == 0)
174 sysgdbinit = relocated_sysgdbinit;
176 xfree (relocated_sysgdbinit);
179 homedir = getenv ("HOME");
181 /* If the .gdbinit file in the current directory is the same as
182 the $HOME/.gdbinit file, it should not be sourced. homebuf
183 and cwdbuf are used in that purpose. Make sure that the stats
184 are zero in case one of them fails (this guarantees that they
185 won't match if either exists). */
187 memset (&homebuf, 0, sizeof (struct stat));
188 memset (&cwdbuf, 0, sizeof (struct stat));
192 homeinit = xstrprintf ("%s/%s", homedir, gdbinit);
193 if (stat (homeinit, &homebuf) != 0)
200 if (stat (gdbinit, &cwdbuf) == 0)
203 || memcmp ((char *) &homebuf, (char *) &cwdbuf,
204 sizeof (struct stat)))
211 *system_gdbinit = sysgdbinit;
212 *home_gdbinit = homeinit;
213 *local_gdbinit = localinit;
216 /* Call command_loop. If it happens to return, pass that through as a
217 non-zero return status. */
220 captured_command_loop (void *data)
222 /* Top-level execution commands can be run on the background from
224 interpreter_async = 1;
226 current_interp_command_loop ();
227 /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
228 would clean things up (restoring the cleanup chain) to the state
229 they were just prior to the call. Technically, this means that
230 the do_cleanups() below is redundant. Unfortunately, many FUNCs
231 are not that well behaved. do_cleanups should either be replaced
232 with a do_cleanups call (to cover the problem) or an assertion
233 check to detect bad FUNCs code. */
234 do_cleanups (all_cleanups ());
235 /* If the command_loop returned, normally (rather than threw an
236 error) we try to quit. If the quit is aborted, catch_errors()
237 which called this catch the signal and restart the command
239 quit_command (NULL, instream == stdin);
243 /* Arguments of --command option and its counterpart. */
244 typedef struct cmdarg {
245 /* Type of this option. */
247 /* Option type -x. */
250 /* Option type -ex. */
253 /* Option type -ix. */
256 /* Option type -iex. */
260 /* Value of this option - filename or the GDB command itself. String memory
261 is not owned by this structure despite it is 'const'. */
265 /* Define type VEC (cmdarg_s). */
266 DEF_VEC_O (cmdarg_s);
269 captured_main (void *data)
271 struct captured_main_args *context = data;
272 int argc = context->argc;
273 char **argv = context->argv;
274 static int quiet = 0;
275 static int set_args = 0;
277 /* Pointers to various arguments from command line. */
279 char *execarg = NULL;
281 char *corearg = NULL;
282 char *pid_or_core_arg = NULL;
286 /* These are static so that we can take their address in an
288 static int print_help;
289 static int print_version;
291 /* Pointers to all arguments of --command option. */
292 VEC (cmdarg_s) *cmdarg_vec = NULL;
293 struct cmdarg *cmdarg_p;
295 /* Indices of all arguments of --directory option. */
297 /* Allocated size. */
299 /* Number of elements used. */
302 /* gdb init files. */
303 char *system_gdbinit;
309 struct objfile *objfile;
311 struct cleanup *pre_stat_chain;
314 /* Set this before calling make_command_stats_cleanup. */
315 lim_at_start = (char *) sbrk (0);
318 pre_stat_chain = make_command_stats_cleanup (0);
320 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
321 setlocale (LC_MESSAGES, "");
323 #if defined (HAVE_SETLOCALE)
324 setlocale (LC_CTYPE, "");
326 bindtextdomain (PACKAGE, LOCALEDIR);
327 textdomain (PACKAGE);
329 make_cleanup (VEC_cleanup (cmdarg_s), &cmdarg_vec);
331 dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg));
335 saved_command_line = (char *) xmalloc (saved_command_line_size);
336 saved_command_line[0] = '\0';
339 gdb_stdout = stdio_fileopen (stdout);
340 gdb_stderr = stdio_fileopen (stderr);
341 gdb_stdlog = gdb_stderr; /* for moment */
342 gdb_stdtarg = gdb_stderr; /* for moment */
343 gdb_stdin = stdio_fileopen (stdin);
344 gdb_stdtargerr = gdb_stderr; /* for moment */
345 gdb_stdtargin = gdb_stdin; /* for moment */
347 gdb_program_name = xstrdup (argv[0]);
349 if (! getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)))
350 /* Don't use *_filtered or warning() (which relies on
351 current_target) until after initialize_all_files(). */
352 fprintf_unfiltered (gdb_stderr,
353 _("%s: warning: error finding "
354 "working directory: %s\n"),
355 argv[0], safe_strerror (errno));
357 current_directory = gdb_dirbuf;
359 /* Set the sysroot path. */
360 gdb_sysroot = relocate_gdb_directory (TARGET_SYSTEM_ROOT,
361 TARGET_SYSTEM_ROOT_RELOCATABLE);
363 debug_file_directory = relocate_gdb_directory (DEBUGDIR,
364 DEBUGDIR_RELOCATABLE);
366 gdb_datadir = relocate_gdb_directory (GDB_DATADIR,
367 GDB_DATADIR_RELOCATABLE);
369 #ifdef WITH_PYTHON_PATH
371 /* For later use in helping Python find itself. */
372 char *tmp = concat (WITH_PYTHON_PATH, SLASH_STRING, "lib", NULL);
374 python_libdir = relocate_gdb_directory (tmp, PYTHON_PATH_RELOCATABLE);
380 add_substitute_path_rule (RELOC_SRCDIR,
381 make_relative_prefix (argv[0], BINDIR,
385 /* There will always be an interpreter. Either the one passed into
386 this captured main, or one specified by the user at start up, or
387 the console. Initialize the interpreter to the one requested by
389 interpreter_p = xstrdup (context->interpreter_p);
391 /* Parse arguments and options. */
394 /* When var field is 0, use flag field to record the equivalent
395 short option (or arbitrary numbers starting at 10 for those
396 with no equivalent). */
408 static struct option long_options[] =
410 {"tui", no_argument, 0, OPT_TUI},
411 {"xdb", no_argument, &xdb_commands, 1},
412 {"dbx", no_argument, &dbx_commands, 1},
413 {"readnow", no_argument, &readnow_symbol_files, 1},
414 {"r", no_argument, &readnow_symbol_files, 1},
415 {"quiet", no_argument, &quiet, 1},
416 {"q", no_argument, &quiet, 1},
417 {"silent", no_argument, &quiet, 1},
418 {"nx", no_argument, &inhibit_gdbinit, 1},
419 {"n", no_argument, &inhibit_gdbinit, 1},
420 {"batch-silent", no_argument, 0, 'B'},
421 {"batch", no_argument, &batch_flag, 1},
422 {"epoch", no_argument, &epoch_interface, 1},
424 /* This is a synonym for "--annotate=1". --annotate is now
425 preferred, but keep this here for a long time because people
426 will be running emacses which use --fullname. */
427 {"fullname", no_argument, 0, 'f'},
428 {"f", no_argument, 0, 'f'},
430 {"annotate", required_argument, 0, OPT_ANNOTATE},
431 {"help", no_argument, &print_help, 1},
432 {"se", required_argument, 0, OPT_SE},
433 {"symbols", required_argument, 0, 's'},
434 {"s", required_argument, 0, 's'},
435 {"exec", required_argument, 0, 'e'},
436 {"e", required_argument, 0, 'e'},
437 {"core", required_argument, 0, 'c'},
438 {"c", required_argument, 0, 'c'},
439 {"pid", required_argument, 0, 'p'},
440 {"p", required_argument, 0, 'p'},
441 {"command", required_argument, 0, 'x'},
442 {"eval-command", required_argument, 0, 'X'},
443 {"version", no_argument, &print_version, 1},
444 {"x", required_argument, 0, 'x'},
445 {"ex", required_argument, 0, 'X'},
446 {"init-command", required_argument, 0, OPT_IX},
447 {"init-eval-command", required_argument, 0, OPT_IEX},
448 {"ix", required_argument, 0, OPT_IX},
449 {"iex", required_argument, 0, OPT_IEX},
451 {"tclcommand", required_argument, 0, 'z'},
452 {"enable-external-editor", no_argument, 0, 'y'},
453 {"editor-command", required_argument, 0, 'w'},
455 {"ui", required_argument, 0, 'i'},
456 {"interpreter", required_argument, 0, 'i'},
457 {"i", required_argument, 0, 'i'},
458 {"directory", required_argument, 0, 'd'},
459 {"d", required_argument, 0, 'd'},
460 {"data-directory", required_argument, 0, 'D'},
461 {"cd", required_argument, 0, OPT_CD},
462 {"tty", required_argument, 0, 't'},
463 {"baud", required_argument, 0, 'b'},
464 {"b", required_argument, 0, 'b'},
465 {"nw", no_argument, NULL, OPT_NOWINDOWS},
466 {"nowindows", no_argument, NULL, OPT_NOWINDOWS},
467 {"w", no_argument, NULL, OPT_WINDOWS},
468 {"windows", no_argument, NULL, OPT_WINDOWS},
469 {"statistics", no_argument, 0, OPT_STATISTICS},
470 {"write", no_argument, &write_files, 1},
471 {"args", no_argument, &set_args, 1},
472 {"l", required_argument, 0, 'l'},
473 {"return-child-result", no_argument, &return_child_result, 1},
474 {0, no_argument, 0, 0}
481 c = getopt_long_only (argc, argv, "",
482 long_options, &option_index);
483 if (c == EOF || set_args)
486 /* Long option that takes an argument. */
487 if (c == 0 && long_options[option_index].flag == 0)
488 c = long_options[option_index].val;
493 /* Long option that just sets a flag. */
503 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
504 annotation_level = atoi (optarg);
507 /* Enable the display of both time and space usage. */
508 set_display_time (1);
509 set_display_space (1);
512 /* --tui is equivalent to -i=tui. */
514 xfree (interpreter_p);
515 interpreter_p = xstrdup (INTERP_TUI);
517 fprintf_unfiltered (gdb_stderr,
518 _("%s: TUI mode is not supported\n"),
524 /* FIXME: cagney/2003-03-01: Not sure if this option is
525 actually useful, and if it is, what it should do. */
527 /* --windows is equivalent to -i=insight. */
528 xfree (interpreter_p);
529 interpreter_p = xstrdup (INTERP_INSIGHT);
534 /* -nw is equivalent to -i=console. */
535 xfree (interpreter_p);
536 interpreter_p = xstrdup (INTERP_CONSOLE);
540 annotation_level = 1;
541 /* We have probably been invoked from emacs. Disable
559 struct cmdarg cmdarg = { CMDARG_FILE, optarg };
561 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
566 struct cmdarg cmdarg = { CMDARG_COMMAND, optarg };
568 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
573 struct cmdarg cmdarg = { CMDARG_INIT_FILE, optarg };
575 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
580 struct cmdarg cmdarg = { CMDARG_INIT_COMMAND, optarg };
582 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
586 batch_flag = batch_silent = 1;
587 gdb_stdout = ui_file_new();
591 gdb_datadir = xstrdup (optarg);
596 extern int gdbtk_test (char *);
598 if (!gdbtk_test (optarg))
600 fprintf_unfiltered (gdb_stderr,
601 _("%s: unable to load "
602 "tclcommand file \"%s\""),
609 /* Backwards compatibility only. */
613 /* Set the external editor commands when gdb is farming out files
614 to be edited by another program. */
615 extern char *external_editor_command;
617 external_editor_command = xstrdup (optarg);
622 xfree (interpreter_p);
623 interpreter_p = xstrdup (optarg);
626 dirarg[ndir++] = optarg;
630 dirarg = (char **) xrealloc ((char *) dirarg,
631 dirsize * sizeof (*dirarg));
645 i = strtol (optarg, &p, 0);
646 if (i == 0 && p == optarg)
648 /* Don't use *_filtered or warning() (which relies on
649 current_target) until after initialize_all_files(). */
653 _("warning: could not set baud rate to `%s'.\n"), optarg);
663 i = strtol (optarg, &p, 0);
664 if (i == 0 && p == optarg)
666 /* Don't use *_filtered or warning() (which relies on
667 current_target) until after initialize_all_files(). */
669 fprintf_unfiltered (gdb_stderr,
670 _("warning: could not set "
671 "timeout limit to `%s'.\n"), optarg);
678 fprintf_unfiltered (gdb_stderr,
679 _("Use `%s --help' for a "
680 "complete list of options.\n"),
686 /* If --help or --version, disable window interface. */
687 if (print_help || print_version)
696 /* Initialize all files. Give the interpreter a chance to take
697 control of the console via the deprecated_init_ui_hook (). */
700 /* Now that gdb_init has created the initial inferior, we're in
701 position to set args for that inferior. */
704 /* The remaining options are the command-line options for the
705 inferior. The first one is the sym/exec file, and the rest
709 fprintf_unfiltered (gdb_stderr,
710 _("%s: `--args' specified but "
711 "no program specified\n"),
715 symarg = argv[optind];
716 execarg = argv[optind];
718 set_inferior_args_vector (argc - optind, &argv[optind]);
722 /* OK, that's all the options. */
724 /* The first argument, if specified, is the name of the
728 symarg = argv[optind];
729 execarg = argv[optind];
733 /* If the user hasn't already specified a PID or the name of a
734 core file, then a second optional argument is allowed. If
735 present, this argument should be interpreted as either a
736 PID or a core file, whichever works. */
737 if (pidarg == NULL && corearg == NULL && optind < argc)
739 pid_or_core_arg = argv[optind];
743 /* Any argument left on the command line is unexpected and
744 will be ignored. Inform the user. */
746 fprintf_unfiltered (gdb_stderr,
747 _("Excess command line "
748 "arguments ignored. (%s%s)\n"),
750 (optind == argc - 1) ? "" : " ...");
753 /* Lookup gdbinit files. Note that the gdbinit file name may be
754 overriden during file initialization, so get_init_files should be
755 called after gdb_init. */
756 get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
758 /* Do these (and anything which might call wrap_here or *_filtered)
759 after initialize_all_files() but before the interpreter has been
760 installed. Otherwize the help/version messages will be eaten by
761 the interpreter's output handler. */
765 print_gdb_version (gdb_stdout);
767 printf_filtered ("\n");
773 print_gdb_help (gdb_stdout);
774 fputs_unfiltered ("\n", gdb_stdout);
778 /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
779 GDB retain the old MI1 interpreter startup behavior. Output the
780 copyright message before the interpreter is installed. That way
781 it isn't encapsulated in MI output. */
782 if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0)
784 /* Print all the junk at the top, with trailing "..." if we are
785 about to read a symbol file (possibly slowly). */
786 print_gdb_version (gdb_stdout);
788 printf_filtered ("..");
790 printf_filtered ("\n");
791 gdb_flush (gdb_stdout); /* Force to screen during slow
795 /* Install the default UI. All the interpreters should have had a
796 look at things by now. Initialize the default interpreter. */
800 struct interp *interp = interp_lookup (interpreter_p);
803 error (_("Interpreter `%s' unrecognized"), interpreter_p);
805 if (!interp_set (interp, 1))
807 fprintf_unfiltered (gdb_stderr,
808 "Interpreter `%s' failed to initialize.\n",
814 /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
815 GDB retain the old MI1 interpreter startup behavior. Output the
816 copyright message after the interpreter is installed when it is
817 any sane interpreter. */
818 if (!quiet && !current_interp_named_p (INTERP_MI1))
820 /* Print all the junk at the top, with trailing "..." if we are
821 about to read a symbol file (possibly slowly). */
822 print_gdb_version (gdb_stdout);
824 printf_filtered ("..");
826 printf_filtered ("\n");
827 gdb_flush (gdb_stdout); /* Force to screen during slow
831 /* Set off error and warning messages with a blank line. */
832 error_pre_print = "\n";
833 quit_pre_print = error_pre_print;
834 warning_pre_print = _("\nwarning: ");
836 /* Read and execute the system-wide gdbinit file, if it exists.
837 This is done *before* all the command line arguments are
838 processed; it sets global parameters, which are independent of
839 what file you are debugging or what directory you are in. */
840 if (system_gdbinit && !inhibit_gdbinit)
841 catch_command_errors (source_script, system_gdbinit, 0, RETURN_MASK_ALL);
843 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
844 *before* all the command line arguments are processed; it sets
845 global parameters, which are independent of what file you are
846 debugging or what directory you are in. */
848 if (home_gdbinit && !inhibit_gdbinit)
849 catch_command_errors (source_script, home_gdbinit, 0, RETURN_MASK_ALL);
851 /* Process '-ix' and '-iex' options early. */
852 for (i = 0; VEC_iterate (cmdarg_s, cmdarg_vec, i, cmdarg_p); i++)
853 switch (cmdarg_p->type)
855 case CMDARG_INIT_FILE:
856 catch_command_errors (source_script, cmdarg_p->string,
857 !batch_flag, RETURN_MASK_ALL);
859 case CMDARG_INIT_COMMAND:
860 catch_command_errors (execute_command, cmdarg_p->string,
861 !batch_flag, RETURN_MASK_ALL);
865 /* Now perform all the actions indicated by the arguments. */
868 catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL);
871 for (i = 0; i < ndir; i++)
872 catch_command_errors (directory_switch, dirarg[i], 0, RETURN_MASK_ALL);
875 /* Skip auto-loading section-specified scripts until we've sourced
876 local_gdbinit (which is often used to augment the source search
878 save_auto_load = global_auto_load;
879 global_auto_load = 0;
883 && strcmp (execarg, symarg) == 0)
885 /* The exec file and the symbol-file are the same. If we can't
886 open it, better only print one error message.
887 catch_command_errors returns non-zero on success! */
888 if (catch_command_errors (exec_file_attach, execarg,
889 !batch_flag, RETURN_MASK_ALL))
890 catch_command_errors (symbol_file_add_main, symarg,
891 !batch_flag, RETURN_MASK_ALL);
896 catch_command_errors (exec_file_attach, execarg,
897 !batch_flag, RETURN_MASK_ALL);
899 catch_command_errors (symbol_file_add_main, symarg,
900 !batch_flag, RETURN_MASK_ALL);
903 if (corearg && pidarg)
904 error (_("Can't attach to process and specify "
905 "a core file at the same time."));
908 catch_command_errors (core_file_command, corearg,
909 !batch_flag, RETURN_MASK_ALL);
910 else if (pidarg != NULL)
911 catch_command_errors (attach_command, pidarg,
912 !batch_flag, RETURN_MASK_ALL);
913 else if (pid_or_core_arg)
915 /* The user specified 'gdb program pid' or gdb program core'.
916 If pid_or_core_arg's first character is a digit, try attach
917 first and then corefile. Otherwise try just corefile. */
919 if (isdigit (pid_or_core_arg[0]))
921 if (catch_command_errors (attach_command, pid_or_core_arg,
922 !batch_flag, RETURN_MASK_ALL) == 0)
923 catch_command_errors (core_file_command, pid_or_core_arg,
924 !batch_flag, RETURN_MASK_ALL);
926 else /* Can't be a pid, better be a corefile. */
927 catch_command_errors (core_file_command, pid_or_core_arg,
928 !batch_flag, RETURN_MASK_ALL);
932 set_inferior_io_terminal (ttyarg);
934 /* Error messages should no longer be distinguished with extra output. */
935 error_pre_print = NULL;
936 quit_pre_print = NULL;
937 warning_pre_print = _("warning: ");
939 /* Read the .gdbinit file in the current directory, *if* it isn't
940 the same as the $HOME/.gdbinit file (it should exist, also). */
943 auto_load_local_gdbinit_pathname = gdb_realpath (local_gdbinit);
945 if (!inhibit_gdbinit && auto_load_local_gdbinit
946 && file_is_auto_load_safe (local_gdbinit,
947 _("auto-load: Loading .gdbinit "
951 auto_load_local_gdbinit_loaded = 1;
953 catch_command_errors (source_script, local_gdbinit, 0,
958 /* Now that all .gdbinit's have been read and all -d options have been
959 processed, we can read any scripts mentioned in SYMARG.
960 We wait until now because it is common to add to the source search
961 path in local_gdbinit. */
962 global_auto_load = save_auto_load;
963 ALL_OBJFILES (objfile)
964 load_auto_scripts_for_objfile (objfile);
966 /* Process '-x' and '-ex' options. */
967 for (i = 0; VEC_iterate (cmdarg_s, cmdarg_vec, i, cmdarg_p); i++)
968 switch (cmdarg_p->type)
971 catch_command_errors (source_script, cmdarg_p->string,
972 !batch_flag, RETURN_MASK_ALL);
975 catch_command_errors (execute_command, cmdarg_p->string,
976 !batch_flag, RETURN_MASK_ALL);
980 /* Read in the old history after all the command files have been
986 /* We have hit the end of the batch file. */
987 quit_force (NULL, 0);
990 /* Show time and/or space usage. */
991 do_cleanups (pre_stat_chain);
993 /* NOTE: cagney/1999-11-07: There is probably no reason for not
994 moving this loop and the code found in captured_command_loop()
995 into the command_loop() proper. The main thing holding back that
996 change - SET_TOP_LEVEL() - has been eliminated. */
999 catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL);
1001 /* No exit -- exit is through quit_command. */
1005 gdb_main (struct captured_main_args *args)
1007 use_windows = args->use_windows;
1008 catch_errors (captured_main, args, "", RETURN_MASK_ALL);
1009 /* The only way to end up here is by an error (normal exit is
1010 handled by quit_force()), hence always return an error status. */
1015 /* Don't use *_filtered for printing help. We don't want to prompt
1016 for continue no matter how small the screen or how much we're going
1020 print_gdb_help (struct ui_file *stream)
1022 char *system_gdbinit;
1024 char *local_gdbinit;
1026 get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
1028 fputs_unfiltered (_("\
1029 This is the GNU debugger. Usage:\n\n\
1030 gdb [options] [executable-file [core-file or process-id]]\n\
1031 gdb [options] --args executable-file [inferior-arguments ...]\n\n\
1034 fputs_unfiltered (_("\
1035 --args Arguments after executable-file are passed to inferior\n\
1037 fputs_unfiltered (_("\
1038 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
1039 --batch Exit after processing options.\n\
1040 --batch-silent As for --batch, but suppress all gdb stdout output.\n\
1041 --return-child-result\n\
1042 GDB exit code will be the child's exit code.\n\
1043 --cd=DIR Change current directory to DIR.\n\
1044 --command=FILE, -x Execute GDB commands from FILE.\n\
1045 --eval-command=COMMAND, -ex\n\
1046 Execute a single GDB command.\n\
1047 May be used multiple times and in conjunction\n\
1049 --init-command=FILE, -ix Like -x but execute it before loading inferior.\n\
1050 --init-eval-command=COMMAND, -iex Like -ex but before loading inferior.\n\
1051 --core=COREFILE Analyze the core dump COREFILE.\n\
1052 --pid=PID Attach to running process PID.\n\
1054 fputs_unfiltered (_("\
1055 --dbx DBX compatibility mode.\n\
1056 --directory=DIR Search for source files in DIR.\n\
1057 --epoch Output information used by epoch emacs-GDB interface.\n\
1058 --exec=EXECFILE Use EXECFILE as the executable.\n\
1059 --fullname Output information used by emacs-GDB interface.\n\
1060 --help Print this message.\n\
1062 fputs_unfiltered (_("\
1063 --interpreter=INTERP\n\
1064 Select a specific interpreter / user interface\n\
1066 fputs_unfiltered (_("\
1067 -l TIMEOUT Set timeout in seconds for remote debugging.\n\
1068 --nw Do not use a window interface.\n\
1069 --nx Do not read "), stream);
1070 fputs_unfiltered (gdbinit, stream);
1071 fputs_unfiltered (_(" file.\n\
1072 --quiet Do not print version number on startup.\n\
1073 --readnow Fully read symbol files on first access.\n\
1075 fputs_unfiltered (_("\
1076 --se=FILE Use FILE as symbol file and executable file.\n\
1077 --symbols=SYMFILE Read symbols from SYMFILE.\n\
1078 --tty=TTY Use TTY for input/output by the program being debugged.\n\
1081 fputs_unfiltered (_("\
1082 --tui Use a terminal user interface.\n\
1085 fputs_unfiltered (_("\
1086 --version Print version information and then exit.\n\
1087 -w Use a window interface.\n\
1088 --write Set writing into executable and core files.\n\
1089 --xdb XDB compatibility mode.\n\
1091 fputs_unfiltered (_("\n\
1092 At startup, GDB reads the following init files and executes their commands:\n\
1095 fprintf_unfiltered (stream, _("\
1096 * system-wide init file: %s\n\
1097 "), system_gdbinit);
1099 fprintf_unfiltered (stream, _("\
1100 * user-specific init file: %s\n\
1103 fprintf_unfiltered (stream, _("\
1104 * local init file (see also 'set auto-load local-gdbinit'): ./%s\n\
1106 fputs_unfiltered (_("\n\
1107 For more information, type \"help\" from within GDB, or consult the\n\
1108 GDB manual (available as on-line info or a printed manual).\n\
1110 if (REPORT_BUGS_TO[0] && stream == gdb_stdout)
1111 fprintf_unfiltered (stream, _("\
1112 Report bugs to \"%s\".\n\
1113 "), REPORT_BUGS_TO);