1 /* Top level stuff for GDB, the GNU debugger.
3 Copyright (C) 1986-2013 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"
47 #include "filenames.h"
48 #include "filestuff.h"
50 /* The selected interpreter. This will be used as a set command
51 variable, so it should always be malloc'ed - since
52 do_setshow_command will free it. */
55 /* Whether xdb commands will be handled. */
58 /* Whether dbx commands will be handled. */
61 /* System root path, used to find libraries etc. */
62 char *gdb_sysroot = 0;
64 /* GDB datadir, used to store data files. */
65 char *gdb_datadir = 0;
67 /* Non-zero if GDB_DATADIR was provided on the command line.
68 This doesn't track whether data-directory is set later from the
69 command line, but we don't reread system.gdbinit when that happens. */
70 static int gdb_datadir_provided = 0;
72 /* If gdb was configured with --with-python=/path,
73 the possibly relocated path to python's lib directory. */
74 char *python_libdir = 0;
76 struct ui_file *gdb_stdout;
77 struct ui_file *gdb_stderr;
78 struct ui_file *gdb_stdlog;
79 struct ui_file *gdb_stdin;
80 /* Target IO streams. */
81 struct ui_file *gdb_stdtargin;
82 struct ui_file *gdb_stdtarg;
83 struct ui_file *gdb_stdtargerr;
85 /* True if --batch or --batch-silent was seen. */
88 /* Support for the --batch-silent option. */
91 /* Support for --return-child-result option.
92 Set the default to -1 to return error in the case
93 that the program does not run or does not complete. */
94 int return_child_result = 0;
95 int return_child_result_value = -1;
98 /* GDB as it has been invoked from the command line (i.e. argv[0]). */
99 static char *gdb_program_name;
101 static void print_gdb_help (struct ui_file *);
103 /* Relocate a file or directory. PROGNAME is the name by which gdb
104 was invoked (i.e., argv[0]). INITIAL is the default value for the
105 file or directory. FLAG is true if the value is relocatable, false
106 otherwise. Returns a newly allocated string; this may return NULL
107 under the same conditions as make_relative_prefix. */
110 relocate_path (const char *progname, const char *initial, int flag)
113 return make_relative_prefix (progname, BINDIR, initial);
114 return xstrdup (initial);
117 /* Like relocate_path, but specifically checks for a directory.
118 INITIAL is relocated according to the rules of relocate_path. If
119 the result is a directory, it is used; otherwise, INITIAL is used.
120 The chosen directory is then canonicalized using lrealpath. This
121 function always returns a newly-allocated string. */
124 relocate_gdb_directory (const char *initial, int flag)
128 dir = relocate_path (gdb_program_name, initial, flag);
133 if (*dir == '\0' || stat (dir, &s) != 0 || !S_ISDIR (s.st_mode))
140 dir = xstrdup (initial);
142 /* Canonicalize the directory. */
145 char *canon_sysroot = lrealpath (dir);
157 /* Compute the locations of init files that GDB should source and
158 return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If
159 there is no system gdbinit (resp. home gdbinit and local gdbinit)
160 to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
161 LOCAL_GDBINIT) is set to NULL. */
163 get_init_files (const char **system_gdbinit,
164 const char **home_gdbinit,
165 const char **local_gdbinit)
167 static const char *sysgdbinit = NULL;
168 static char *homeinit = NULL;
169 static const char *localinit = NULL;
170 static int initialized = 0;
174 struct stat homebuf, cwdbuf, s;
177 if (SYSTEM_GDBINIT[0])
179 int datadir_len = strlen (GDB_DATADIR);
180 int sys_gdbinit_len = strlen (SYSTEM_GDBINIT);
181 char *relocated_sysgdbinit;
183 /* If SYSTEM_GDBINIT lives in data-directory, and data-directory
184 has been provided, search for SYSTEM_GDBINIT there. */
185 if (gdb_datadir_provided
186 && datadir_len < sys_gdbinit_len
187 && filename_ncmp (SYSTEM_GDBINIT, GDB_DATADIR, datadir_len) == 0
188 && IS_DIR_SEPARATOR (SYSTEM_GDBINIT[datadir_len]))
190 /* Append the part of SYSTEM_GDBINIT that follows GDB_DATADIR
192 char *tmp_sys_gdbinit = xstrdup (SYSTEM_GDBINIT + datadir_len);
195 for (p = tmp_sys_gdbinit; IS_DIR_SEPARATOR (*p); ++p)
197 relocated_sysgdbinit = concat (gdb_datadir, SLASH_STRING, p,
199 xfree (tmp_sys_gdbinit);
203 relocated_sysgdbinit = relocate_path (gdb_program_name,
205 SYSTEM_GDBINIT_RELOCATABLE);
207 if (relocated_sysgdbinit && stat (relocated_sysgdbinit, &s) == 0)
208 sysgdbinit = relocated_sysgdbinit;
210 xfree (relocated_sysgdbinit);
213 homedir = getenv ("HOME");
215 /* If the .gdbinit file in the current directory is the same as
216 the $HOME/.gdbinit file, it should not be sourced. homebuf
217 and cwdbuf are used in that purpose. Make sure that the stats
218 are zero in case one of them fails (this guarantees that they
219 won't match if either exists). */
221 memset (&homebuf, 0, sizeof (struct stat));
222 memset (&cwdbuf, 0, sizeof (struct stat));
226 homeinit = xstrprintf ("%s/%s", homedir, gdbinit);
227 if (stat (homeinit, &homebuf) != 0)
234 if (stat (gdbinit, &cwdbuf) == 0)
237 || memcmp ((char *) &homebuf, (char *) &cwdbuf,
238 sizeof (struct stat)))
245 *system_gdbinit = sysgdbinit;
246 *home_gdbinit = homeinit;
247 *local_gdbinit = localinit;
250 /* Call command_loop. If it happens to return, pass that through as a
251 non-zero return status. */
254 captured_command_loop (void *data)
256 /* Top-level execution commands can be run in the background from
258 interpreter_async = 1;
260 current_interp_command_loop ();
261 /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
262 would clean things up (restoring the cleanup chain) to the state
263 they were just prior to the call. Technically, this means that
264 the do_cleanups() below is redundant. Unfortunately, many FUNCs
265 are not that well behaved. do_cleanups should either be replaced
266 with a do_cleanups call (to cover the problem) or an assertion
267 check to detect bad FUNCs code. */
268 do_cleanups (all_cleanups ());
269 /* If the command_loop returned, normally (rather than threw an
270 error) we try to quit. If the quit is aborted, catch_errors()
271 which called this catch the signal and restart the command
273 quit_command (NULL, instream == stdin);
277 /* Arguments of --command option and its counterpart. */
278 typedef struct cmdarg {
279 /* Type of this option. */
281 /* Option type -x. */
284 /* Option type -ex. */
287 /* Option type -ix. */
290 /* Option type -iex. */
294 /* Value of this option - filename or the GDB command itself. String memory
295 is not owned by this structure despite it is 'const'. */
299 /* Define type VEC (cmdarg_s). */
300 DEF_VEC_O (cmdarg_s);
303 captured_main (void *data)
305 struct captured_main_args *context = data;
306 int argc = context->argc;
307 char **argv = context->argv;
308 static int quiet = 0;
309 static int set_args = 0;
310 static int inhibit_home_gdbinit = 0;
312 /* Pointers to various arguments from command line. */
314 char *execarg = NULL;
316 char *corearg = NULL;
317 char *pid_or_core_arg = NULL;
321 /* These are static so that we can take their address in an
323 static int print_help;
324 static int print_version;
325 static int print_configuration;
327 /* Pointers to all arguments of --command option. */
328 VEC (cmdarg_s) *cmdarg_vec = NULL;
329 struct cmdarg *cmdarg_p;
331 /* Indices of all arguments of --directory option. */
333 /* Allocated size. */
335 /* Number of elements used. */
338 /* gdb init files. */
339 const char *system_gdbinit;
340 const char *home_gdbinit;
341 const char *local_gdbinit;
345 struct objfile *objfile;
347 struct cleanup *pre_stat_chain;
350 /* Set this before calling make_command_stats_cleanup. */
351 lim_at_start = (char *) sbrk (0);
354 pre_stat_chain = make_command_stats_cleanup (0);
356 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
357 setlocale (LC_MESSAGES, "");
359 #if defined (HAVE_SETLOCALE)
360 setlocale (LC_CTYPE, "");
362 bindtextdomain (PACKAGE, LOCALEDIR);
363 textdomain (PACKAGE);
368 make_cleanup (VEC_cleanup (cmdarg_s), &cmdarg_vec);
370 dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg));
374 saved_command_line = (char *) xmalloc (saved_command_line_size);
375 saved_command_line[0] = '\0';
378 gdb_stdout = stdio_fileopen (stdout);
379 gdb_stderr = stdio_fileopen (stderr);
380 gdb_stdlog = gdb_stderr; /* for moment */
381 gdb_stdtarg = gdb_stderr; /* for moment */
382 gdb_stdin = stdio_fileopen (stdin);
383 gdb_stdtargerr = gdb_stderr; /* for moment */
384 gdb_stdtargin = gdb_stdin; /* for moment */
387 /* On Windows, argv[0] is not necessarily set to absolute form when
388 GDB is found along PATH, without which relocation doesn't work. */
389 gdb_program_name = windows_get_absolute_argv0 (argv[0]);
391 gdb_program_name = xstrdup (argv[0]);
394 if (! getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)))
395 /* Don't use *_filtered or warning() (which relies on
396 current_target) until after initialize_all_files(). */
397 fprintf_unfiltered (gdb_stderr,
398 _("%s: warning: error finding "
399 "working directory: %s\n"),
400 argv[0], safe_strerror (errno));
402 current_directory = gdb_dirbuf;
404 /* Set the sysroot path. */
405 gdb_sysroot = relocate_gdb_directory (TARGET_SYSTEM_ROOT,
406 TARGET_SYSTEM_ROOT_RELOCATABLE);
408 debug_file_directory = relocate_gdb_directory (DEBUGDIR,
409 DEBUGDIR_RELOCATABLE);
411 gdb_datadir = relocate_gdb_directory (GDB_DATADIR,
412 GDB_DATADIR_RELOCATABLE);
414 #ifdef WITH_PYTHON_PATH
416 /* For later use in helping Python find itself. */
417 char *tmp = concat (WITH_PYTHON_PATH, SLASH_STRING, "lib", NULL);
419 python_libdir = relocate_gdb_directory (tmp, PYTHON_PATH_RELOCATABLE);
425 add_substitute_path_rule (RELOC_SRCDIR,
426 make_relative_prefix (gdb_program_name, BINDIR,
430 /* There will always be an interpreter. Either the one passed into
431 this captured main, or one specified by the user at start up, or
432 the console. Initialize the interpreter to the one requested by
434 interpreter_p = xstrdup (context->interpreter_p);
436 /* Parse arguments and options. */
439 /* When var field is 0, use flag field to record the equivalent
440 short option (or arbitrary numbers starting at 10 for those
441 with no equivalent). */
453 static struct option long_options[] =
455 {"tui", no_argument, 0, OPT_TUI},
456 {"xdb", no_argument, &xdb_commands, 1},
457 {"dbx", no_argument, &dbx_commands, 1},
458 {"readnow", no_argument, &readnow_symbol_files, 1},
459 {"r", no_argument, &readnow_symbol_files, 1},
460 {"quiet", no_argument, &quiet, 1},
461 {"q", no_argument, &quiet, 1},
462 {"silent", no_argument, &quiet, 1},
463 {"nh", no_argument, &inhibit_home_gdbinit, 1},
464 {"nx", no_argument, &inhibit_gdbinit, 1},
465 {"n", no_argument, &inhibit_gdbinit, 1},
466 {"batch-silent", no_argument, 0, 'B'},
467 {"batch", no_argument, &batch_flag, 1},
469 /* This is a synonym for "--annotate=1". --annotate is now
470 preferred, but keep this here for a long time because people
471 will be running emacses which use --fullname. */
472 {"fullname", no_argument, 0, 'f'},
473 {"f", no_argument, 0, 'f'},
475 {"annotate", required_argument, 0, OPT_ANNOTATE},
476 {"help", no_argument, &print_help, 1},
477 {"se", required_argument, 0, OPT_SE},
478 {"symbols", required_argument, 0, 's'},
479 {"s", required_argument, 0, 's'},
480 {"exec", required_argument, 0, 'e'},
481 {"e", required_argument, 0, 'e'},
482 {"core", required_argument, 0, 'c'},
483 {"c", required_argument, 0, 'c'},
484 {"pid", required_argument, 0, 'p'},
485 {"p", required_argument, 0, 'p'},
486 {"command", required_argument, 0, 'x'},
487 {"eval-command", required_argument, 0, 'X'},
488 {"version", no_argument, &print_version, 1},
489 {"configuration", no_argument, &print_configuration, 1},
490 {"x", required_argument, 0, 'x'},
491 {"ex", required_argument, 0, 'X'},
492 {"init-command", required_argument, 0, OPT_IX},
493 {"init-eval-command", required_argument, 0, OPT_IEX},
494 {"ix", required_argument, 0, OPT_IX},
495 {"iex", required_argument, 0, OPT_IEX},
497 {"tclcommand", required_argument, 0, 'z'},
498 {"enable-external-editor", no_argument, 0, 'y'},
499 {"editor-command", required_argument, 0, 'w'},
501 {"ui", required_argument, 0, 'i'},
502 {"interpreter", required_argument, 0, 'i'},
503 {"i", required_argument, 0, 'i'},
504 {"directory", required_argument, 0, 'd'},
505 {"d", required_argument, 0, 'd'},
506 {"data-directory", required_argument, 0, 'D'},
507 {"cd", required_argument, 0, OPT_CD},
508 {"tty", required_argument, 0, 't'},
509 {"baud", required_argument, 0, 'b'},
510 {"b", required_argument, 0, 'b'},
511 {"nw", no_argument, NULL, OPT_NOWINDOWS},
512 {"nowindows", no_argument, NULL, OPT_NOWINDOWS},
513 {"w", no_argument, NULL, OPT_WINDOWS},
514 {"windows", no_argument, NULL, OPT_WINDOWS},
515 {"statistics", no_argument, 0, OPT_STATISTICS},
516 {"write", no_argument, &write_files, 1},
517 {"args", no_argument, &set_args, 1},
518 {"l", required_argument, 0, 'l'},
519 {"return-child-result", no_argument, &return_child_result, 1},
520 {0, no_argument, 0, 0}
527 c = getopt_long_only (argc, argv, "",
528 long_options, &option_index);
529 if (c == EOF || set_args)
532 /* Long option that takes an argument. */
533 if (c == 0 && long_options[option_index].flag == 0)
534 c = long_options[option_index].val;
539 /* Long option that just sets a flag. */
549 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
550 annotation_level = atoi (optarg);
553 /* Enable the display of both time and space usage. */
554 set_per_command_time (1);
555 set_per_command_space (1);
558 /* --tui is equivalent to -i=tui. */
560 xfree (interpreter_p);
561 interpreter_p = xstrdup (INTERP_TUI);
563 fprintf_unfiltered (gdb_stderr,
564 _("%s: TUI mode is not supported\n"),
570 /* FIXME: cagney/2003-03-01: Not sure if this option is
571 actually useful, and if it is, what it should do. */
573 /* --windows is equivalent to -i=insight. */
574 xfree (interpreter_p);
575 interpreter_p = xstrdup (INTERP_INSIGHT);
580 /* -nw is equivalent to -i=console. */
581 xfree (interpreter_p);
582 interpreter_p = xstrdup (INTERP_CONSOLE);
586 annotation_level = 1;
587 /* We have probably been invoked from emacs. Disable
605 struct cmdarg cmdarg = { CMDARG_FILE, optarg };
607 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
612 struct cmdarg cmdarg = { CMDARG_COMMAND, optarg };
614 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
619 struct cmdarg cmdarg = { CMDARG_INIT_FILE, optarg };
621 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
626 struct cmdarg cmdarg = { CMDARG_INIT_COMMAND, optarg };
628 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
632 batch_flag = batch_silent = 1;
633 gdb_stdout = ui_file_new();
637 gdb_datadir = xstrdup (optarg);
638 gdb_datadir_provided = 1;
643 extern int gdbtk_test (char *);
645 if (!gdbtk_test (optarg))
647 fprintf_unfiltered (gdb_stderr,
648 _("%s: unable to load "
649 "tclcommand file \"%s\""),
656 /* Backwards compatibility only. */
660 /* Set the external editor commands when gdb is farming out files
661 to be edited by another program. */
662 extern char *external_editor_command;
664 external_editor_command = xstrdup (optarg);
669 xfree (interpreter_p);
670 interpreter_p = xstrdup (optarg);
673 dirarg[ndir++] = optarg;
677 dirarg = (char **) xrealloc ((char *) dirarg,
678 dirsize * sizeof (*dirarg));
692 i = strtol (optarg, &p, 0);
693 if (i == 0 && p == optarg)
695 /* Don't use *_filtered or warning() (which relies on
696 current_target) until after initialize_all_files(). */
700 _("warning: could not set baud rate to `%s'.\n"), optarg);
710 i = strtol (optarg, &p, 0);
711 if (i == 0 && p == optarg)
713 /* Don't use *_filtered or warning() (which relies on
714 current_target) until after initialize_all_files(). */
716 fprintf_unfiltered (gdb_stderr,
717 _("warning: could not set "
718 "timeout limit to `%s'.\n"), optarg);
725 fprintf_unfiltered (gdb_stderr,
726 _("Use `%s --help' for a "
727 "complete list of options.\n"),
733 /* If --help or --version or --configuration, disable window
735 if (print_help || print_version || print_configuration)
744 /* Initialize all files. Give the interpreter a chance to take
745 control of the console via the deprecated_init_ui_hook (). */
746 gdb_init (gdb_program_name);
748 /* Now that gdb_init has created the initial inferior, we're in
749 position to set args for that inferior. */
752 /* The remaining options are the command-line options for the
753 inferior. The first one is the sym/exec file, and the rest
757 fprintf_unfiltered (gdb_stderr,
758 _("%s: `--args' specified but "
759 "no program specified\n"),
763 symarg = argv[optind];
764 execarg = argv[optind];
766 set_inferior_args_vector (argc - optind, &argv[optind]);
770 /* OK, that's all the options. */
772 /* The first argument, if specified, is the name of the
776 symarg = argv[optind];
777 execarg = argv[optind];
781 /* If the user hasn't already specified a PID or the name of a
782 core file, then a second optional argument is allowed. If
783 present, this argument should be interpreted as either a
784 PID or a core file, whichever works. */
785 if (pidarg == NULL && corearg == NULL && optind < argc)
787 pid_or_core_arg = argv[optind];
791 /* Any argument left on the command line is unexpected and
792 will be ignored. Inform the user. */
794 fprintf_unfiltered (gdb_stderr,
795 _("Excess command line "
796 "arguments ignored. (%s%s)\n"),
798 (optind == argc - 1) ? "" : " ...");
801 /* Lookup gdbinit files. Note that the gdbinit file name may be
802 overriden during file initialization, so get_init_files should be
803 called after gdb_init. */
804 get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
806 /* Do these (and anything which might call wrap_here or *_filtered)
807 after initialize_all_files() but before the interpreter has been
808 installed. Otherwize the help/version messages will be eaten by
809 the interpreter's output handler. */
813 print_gdb_version (gdb_stdout);
815 printf_filtered ("\n");
821 print_gdb_help (gdb_stdout);
822 fputs_unfiltered ("\n", gdb_stdout);
826 if (print_configuration)
828 print_gdb_configuration (gdb_stdout);
830 printf_filtered ("\n");
834 /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
835 GDB retain the old MI1 interpreter startup behavior. Output the
836 copyright message before the interpreter is installed. That way
837 it isn't encapsulated in MI output. */
838 if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0)
840 /* Print all the junk at the top, with trailing "..." if we are
841 about to read a symbol file (possibly slowly). */
842 print_gdb_version (gdb_stdout);
844 printf_filtered ("..");
846 printf_filtered ("\n");
847 gdb_flush (gdb_stdout); /* Force to screen during slow
851 /* Install the default UI. All the interpreters should have had a
852 look at things by now. Initialize the default interpreter. */
856 struct interp *interp = interp_lookup (interpreter_p);
859 error (_("Interpreter `%s' unrecognized"), interpreter_p);
861 if (!interp_set (interp, 1))
863 fprintf_unfiltered (gdb_stderr,
864 "Interpreter `%s' failed to initialize.\n",
870 /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
871 GDB retain the old MI1 interpreter startup behavior. Output the
872 copyright message after the interpreter is installed when it is
873 any sane interpreter. */
874 if (!quiet && !current_interp_named_p (INTERP_MI1))
876 /* Print all the junk at the top, with trailing "..." if we are
877 about to read a symbol file (possibly slowly). */
878 print_gdb_version (gdb_stdout);
880 printf_filtered ("..");
882 printf_filtered ("\n");
883 gdb_flush (gdb_stdout); /* Force to screen during slow
887 /* Set off error and warning messages with a blank line. */
888 warning_pre_print = _("\nwarning: ");
890 /* Read and execute the system-wide gdbinit file, if it exists.
891 This is done *before* all the command line arguments are
892 processed; it sets global parameters, which are independent of
893 what file you are debugging or what directory you are in. */
894 if (system_gdbinit && !inhibit_gdbinit)
895 catch_command_errors_const (source_script, system_gdbinit,
898 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
899 *before* all the command line arguments are processed; it sets
900 global parameters, which are independent of what file you are
901 debugging or what directory you are in. */
903 if (home_gdbinit && !inhibit_gdbinit && !inhibit_home_gdbinit)
904 catch_command_errors_const (source_script,
905 home_gdbinit, 0, RETURN_MASK_ALL);
907 /* Process '-ix' and '-iex' options early. */
908 for (i = 0; VEC_iterate (cmdarg_s, cmdarg_vec, i, cmdarg_p); i++)
909 switch (cmdarg_p->type)
911 case CMDARG_INIT_FILE:
912 catch_command_errors_const (source_script, cmdarg_p->string,
913 !batch_flag, RETURN_MASK_ALL);
915 case CMDARG_INIT_COMMAND:
916 catch_command_errors (execute_command, cmdarg_p->string,
917 !batch_flag, RETURN_MASK_ALL);
921 /* Now perform all the actions indicated by the arguments. */
924 catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL);
927 for (i = 0; i < ndir; i++)
928 catch_command_errors (directory_switch, dirarg[i], 0, RETURN_MASK_ALL);
931 /* Skip auto-loading section-specified scripts until we've sourced
932 local_gdbinit (which is often used to augment the source search
934 save_auto_load = global_auto_load;
935 global_auto_load = 0;
939 && strcmp (execarg, symarg) == 0)
941 /* The exec file and the symbol-file are the same. If we can't
942 open it, better only print one error message.
943 catch_command_errors returns non-zero on success! */
944 if (catch_command_errors (exec_file_attach, execarg,
945 !batch_flag, RETURN_MASK_ALL))
946 catch_command_errors (symbol_file_add_main, symarg,
947 !batch_flag, RETURN_MASK_ALL);
952 catch_command_errors (exec_file_attach, execarg,
953 !batch_flag, RETURN_MASK_ALL);
955 catch_command_errors (symbol_file_add_main, symarg,
956 !batch_flag, RETURN_MASK_ALL);
959 if (corearg && pidarg)
960 error (_("Can't attach to process and specify "
961 "a core file at the same time."));
964 catch_command_errors (core_file_command, corearg,
965 !batch_flag, RETURN_MASK_ALL);
966 else if (pidarg != NULL)
967 catch_command_errors (attach_command, pidarg,
968 !batch_flag, RETURN_MASK_ALL);
969 else if (pid_or_core_arg)
971 /* The user specified 'gdb program pid' or gdb program core'.
972 If pid_or_core_arg's first character is a digit, try attach
973 first and then corefile. Otherwise try just corefile. */
975 if (isdigit (pid_or_core_arg[0]))
977 if (catch_command_errors (attach_command, pid_or_core_arg,
978 !batch_flag, RETURN_MASK_ALL) == 0)
979 catch_command_errors (core_file_command, pid_or_core_arg,
980 !batch_flag, RETURN_MASK_ALL);
982 else /* Can't be a pid, better be a corefile. */
983 catch_command_errors (core_file_command, pid_or_core_arg,
984 !batch_flag, RETURN_MASK_ALL);
988 set_inferior_io_terminal (ttyarg);
990 /* Error messages should no longer be distinguished with extra output. */
991 warning_pre_print = _("warning: ");
993 /* Read the .gdbinit file in the current directory, *if* it isn't
994 the same as the $HOME/.gdbinit file (it should exist, also). */
997 auto_load_local_gdbinit_pathname = gdb_realpath (local_gdbinit);
999 if (!inhibit_gdbinit && auto_load_local_gdbinit
1000 && file_is_auto_load_safe (local_gdbinit,
1001 _("auto-load: Loading .gdbinit "
1005 auto_load_local_gdbinit_loaded = 1;
1007 catch_command_errors_const (source_script, local_gdbinit, 0,
1012 /* Now that all .gdbinit's have been read and all -d options have been
1013 processed, we can read any scripts mentioned in SYMARG.
1014 We wait until now because it is common to add to the source search
1015 path in local_gdbinit. */
1016 global_auto_load = save_auto_load;
1017 ALL_OBJFILES (objfile)
1018 load_auto_scripts_for_objfile (objfile);
1020 /* Process '-x' and '-ex' options. */
1021 for (i = 0; VEC_iterate (cmdarg_s, cmdarg_vec, i, cmdarg_p); i++)
1022 switch (cmdarg_p->type)
1025 catch_command_errors_const (source_script, cmdarg_p->string,
1026 !batch_flag, RETURN_MASK_ALL);
1028 case CMDARG_COMMAND:
1029 catch_command_errors (execute_command, cmdarg_p->string,
1030 !batch_flag, RETURN_MASK_ALL);
1034 /* Read in the old history after all the command files have been
1040 /* We have hit the end of the batch file. */
1041 quit_force (NULL, 0);
1044 /* Show time and/or space usage. */
1045 do_cleanups (pre_stat_chain);
1047 /* NOTE: cagney/1999-11-07: There is probably no reason for not
1048 moving this loop and the code found in captured_command_loop()
1049 into the command_loop() proper. The main thing holding back that
1050 change - SET_TOP_LEVEL() - has been eliminated. */
1053 catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL);
1055 /* No exit -- exit is through quit_command. */
1059 gdb_main (struct captured_main_args *args)
1061 use_windows = args->use_windows;
1062 catch_errors (captured_main, args, "", RETURN_MASK_ALL);
1063 /* The only way to end up here is by an error (normal exit is
1064 handled by quit_force()), hence always return an error status. */
1069 /* Don't use *_filtered for printing help. We don't want to prompt
1070 for continue no matter how small the screen or how much we're going
1074 print_gdb_help (struct ui_file *stream)
1076 const char *system_gdbinit;
1077 const char *home_gdbinit;
1078 const char *local_gdbinit;
1080 get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
1082 /* Note: The options in the list below are only approximately sorted
1083 in the alphabetical order, so as to group closely related options
1085 fputs_unfiltered (_("\
1086 This is the GNU debugger. Usage:\n\n\
1087 gdb [options] [executable-file [core-file or process-id]]\n\
1088 gdb [options] --args executable-file [inferior-arguments ...]\n\n\
1090 fputs_unfiltered (_("\
1091 Selection of debuggee and its files:\n\n\
1092 --args Arguments after executable-file are passed to inferior\n\
1093 --core=COREFILE Analyze the core dump COREFILE.\n\
1094 --exec=EXECFILE Use EXECFILE as the executable.\n\
1095 --pid=PID Attach to running process PID.\n\
1096 --directory=DIR Search for source files in DIR.\n\
1097 --se=FILE Use FILE as symbol file and executable file.\n\
1098 --symbols=SYMFILE Read symbols from SYMFILE.\n\
1099 --readnow Fully read symbol files on first access.\n\
1100 --write Set writing into executable and core files.\n\n\
1102 fputs_unfiltered (_("\
1103 Initial commands and command files:\n\n\
1104 --command=FILE, -x Execute GDB commands from FILE.\n\
1105 --init-command=FILE, -ix\n\
1106 Like -x but execute commands before loading inferior.\n\
1107 --eval-command=COMMAND, -ex\n\
1108 Execute a single GDB command.\n\
1109 May be used multiple times and in conjunction\n\
1111 --init-eval-command=COMMAND, -iex\n\
1112 Like -ex but before loading inferior.\n\
1113 --nh Do not read ~/.gdbinit.\n\
1114 --nx Do not read any .gdbinit files in any directory.\n\n\
1116 fputs_unfiltered (_("\
1117 Output and user interface control:\n\n\
1118 --fullname Output information used by emacs-GDB interface.\n\
1119 --interpreter=INTERP\n\
1120 Select a specific interpreter / user interface\n\
1121 --tty=TTY Use TTY for input/output by the program being debugged.\n\
1122 -w Use the GUI interface.\n\
1123 --nw Do not use the GUI interface.\n\
1126 fputs_unfiltered (_("\
1127 --tui Use a terminal user interface.\n\
1130 fputs_unfiltered (_("\
1131 --dbx DBX compatibility mode.\n\
1132 --xdb XDB compatibility mode.\n\
1133 --quiet Do not print version number on startup.\n\n\
1135 fputs_unfiltered (_("\
1136 Operating modes:\n\n\
1137 --batch Exit after processing options.\n\
1138 --batch-silent Like --batch, but suppress all gdb stdout output.\n\
1139 --return-child-result\n\
1140 GDB exit code will be the child's exit code.\n\
1141 --configuration Print details about GDB configuration and then exit.\n\
1142 --help Print this message and then exit.\n\
1143 --version Print version information and then exit.\n\n\
1144 Remote debugging options:\n\n\
1145 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
1146 -l TIMEOUT Set timeout in seconds for remote debugging.\n\n\
1148 --cd=DIR Change current directory to DIR.\n\
1150 fputs_unfiltered (_("\n\
1151 At startup, GDB reads the following init files and executes their commands:\n\
1154 fprintf_unfiltered (stream, _("\
1155 * system-wide init file: %s\n\
1156 "), system_gdbinit);
1158 fprintf_unfiltered (stream, _("\
1159 * user-specific init file: %s\n\
1162 fprintf_unfiltered (stream, _("\
1163 * local init file (see also 'set auto-load local-gdbinit'): ./%s\n\
1165 fputs_unfiltered (_("\n\
1166 For more information, type \"help\" from within GDB, or consult the\n\
1167 GDB manual (available as on-line info or a printed manual).\n\
1169 if (REPORT_BUGS_TO[0] && stream == gdb_stdout)
1170 fprintf_unfiltered (stream, _("\
1171 Report bugs to \"%s\".\n\
1172 "), REPORT_BUGS_TO);