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"
46 #include "filenames.h"
48 /* The selected interpreter. This will be used as a set command
49 variable, so it should always be malloc'ed - since
50 do_setshow_command will free it. */
53 /* Whether xdb commands will be handled. */
56 /* Whether dbx commands will be handled. */
59 /* System root path, used to find libraries etc. */
60 char *gdb_sysroot = 0;
62 /* GDB datadir, used to store data files. */
63 char *gdb_datadir = 0;
65 /* Non-zero if GDB_DATADIR was provided on the command line.
66 This doesn't track whether data-directory is set later from the
67 command line, but we don't reread system.gdbinit when that happens. */
68 static int gdb_datadir_provided = 0;
70 /* If gdb was configured with --with-python=/path,
71 the possibly relocated path to python's lib directory. */
72 char *python_libdir = 0;
74 struct ui_file *gdb_stdout;
75 struct ui_file *gdb_stderr;
76 struct ui_file *gdb_stdlog;
77 struct ui_file *gdb_stdin;
78 /* Target IO streams. */
79 struct ui_file *gdb_stdtargin;
80 struct ui_file *gdb_stdtarg;
81 struct ui_file *gdb_stdtargerr;
83 /* True if --batch or --batch-silent was seen. */
86 /* Support for the --batch-silent option. */
89 /* Support for --return-child-result option.
90 Set the default to -1 to return error in the case
91 that the program does not run or does not complete. */
92 int return_child_result = 0;
93 int return_child_result_value = -1;
96 /* GDB as it has been invoked from the command line (i.e. argv[0]). */
97 static char *gdb_program_name;
99 static void print_gdb_help (struct ui_file *);
101 /* Relocate a file or directory. PROGNAME is the name by which gdb
102 was invoked (i.e., argv[0]). INITIAL is the default value for the
103 file or directory. FLAG is true if the value is relocatable, false
104 otherwise. Returns a newly allocated string; this may return NULL
105 under the same conditions as make_relative_prefix. */
108 relocate_path (const char *progname, const char *initial, int flag)
111 return make_relative_prefix (progname, BINDIR, initial);
112 return xstrdup (initial);
115 /* Like relocate_path, but specifically checks for a directory.
116 INITIAL is relocated according to the rules of relocate_path. If
117 the result is a directory, it is used; otherwise, INITIAL is used.
118 The chosen directory is then canonicalized using lrealpath. This
119 function always returns a newly-allocated string. */
122 relocate_gdb_directory (const char *initial, int flag)
126 dir = relocate_path (gdb_program_name, initial, flag);
131 if (*dir == '\0' || stat (dir, &s) != 0 || !S_ISDIR (s.st_mode))
138 dir = xstrdup (initial);
140 /* Canonicalize the directory. */
143 char *canon_sysroot = lrealpath (dir);
155 /* Compute the locations of init files that GDB should source and
156 return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If
157 there is no system gdbinit (resp. home gdbinit and local gdbinit)
158 to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
159 LOCAL_GDBINIT) is set to NULL. */
161 get_init_files (char **system_gdbinit,
163 char **local_gdbinit)
165 static char *sysgdbinit = NULL;
166 static char *homeinit = NULL;
167 static char *localinit = NULL;
168 static int initialized = 0;
172 struct stat homebuf, cwdbuf, s;
175 if (SYSTEM_GDBINIT[0])
177 int datadir_len = strlen (GDB_DATADIR);
178 int sys_gdbinit_len = strlen (SYSTEM_GDBINIT);
179 char *relocated_sysgdbinit;
181 /* If SYSTEM_GDBINIT lives in data-directory, and data-directory
182 has been provided, search for SYSTEM_GDBINIT there. */
183 if (gdb_datadir_provided
184 && datadir_len < sys_gdbinit_len
185 && filename_ncmp (SYSTEM_GDBINIT, GDB_DATADIR, datadir_len) == 0
186 && IS_DIR_SEPARATOR (SYSTEM_GDBINIT[datadir_len]))
188 /* Append the part of SYSTEM_GDBINIT that follows GDB_DATADIR
190 char *tmp_sys_gdbinit = xstrdup (SYSTEM_GDBINIT + datadir_len);
193 for (p = tmp_sys_gdbinit; IS_DIR_SEPARATOR (*p); ++p)
195 relocated_sysgdbinit = concat (gdb_datadir, SLASH_STRING, p,
197 xfree (tmp_sys_gdbinit);
201 relocated_sysgdbinit = relocate_path (gdb_program_name,
203 SYSTEM_GDBINIT_RELOCATABLE);
205 if (relocated_sysgdbinit && stat (relocated_sysgdbinit, &s) == 0)
206 sysgdbinit = relocated_sysgdbinit;
208 xfree (relocated_sysgdbinit);
211 homedir = getenv ("HOME");
213 /* If the .gdbinit file in the current directory is the same as
214 the $HOME/.gdbinit file, it should not be sourced. homebuf
215 and cwdbuf are used in that purpose. Make sure that the stats
216 are zero in case one of them fails (this guarantees that they
217 won't match if either exists). */
219 memset (&homebuf, 0, sizeof (struct stat));
220 memset (&cwdbuf, 0, sizeof (struct stat));
224 homeinit = xstrprintf ("%s/%s", homedir, gdbinit);
225 if (stat (homeinit, &homebuf) != 0)
232 if (stat (gdbinit, &cwdbuf) == 0)
235 || memcmp ((char *) &homebuf, (char *) &cwdbuf,
236 sizeof (struct stat)))
243 *system_gdbinit = sysgdbinit;
244 *home_gdbinit = homeinit;
245 *local_gdbinit = localinit;
248 /* Call command_loop. If it happens to return, pass that through as a
249 non-zero return status. */
252 captured_command_loop (void *data)
254 /* Top-level execution commands can be run on the background from
256 interpreter_async = 1;
258 current_interp_command_loop ();
259 /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
260 would clean things up (restoring the cleanup chain) to the state
261 they were just prior to the call. Technically, this means that
262 the do_cleanups() below is redundant. Unfortunately, many FUNCs
263 are not that well behaved. do_cleanups should either be replaced
264 with a do_cleanups call (to cover the problem) or an assertion
265 check to detect bad FUNCs code. */
266 do_cleanups (all_cleanups ());
267 /* If the command_loop returned, normally (rather than threw an
268 error) we try to quit. If the quit is aborted, catch_errors()
269 which called this catch the signal and restart the command
271 quit_command (NULL, instream == stdin);
275 /* Arguments of --command option and its counterpart. */
276 typedef struct cmdarg {
277 /* Type of this option. */
279 /* Option type -x. */
282 /* Option type -ex. */
285 /* Option type -ix. */
288 /* Option type -iex. */
292 /* Value of this option - filename or the GDB command itself. String memory
293 is not owned by this structure despite it is 'const'. */
297 /* Define type VEC (cmdarg_s). */
298 DEF_VEC_O (cmdarg_s);
301 captured_main (void *data)
303 struct captured_main_args *context = data;
304 int argc = context->argc;
305 char **argv = context->argv;
306 static int quiet = 0;
307 static int set_args = 0;
308 static int inhibit_home_gdbinit = 0;
310 /* Pointers to various arguments from command line. */
312 char *execarg = NULL;
314 char *corearg = NULL;
315 char *pid_or_core_arg = NULL;
319 /* These are static so that we can take their address in an
321 static int print_help;
322 static int print_version;
324 /* Pointers to all arguments of --command option. */
325 VEC (cmdarg_s) *cmdarg_vec = NULL;
326 struct cmdarg *cmdarg_p;
328 /* Indices of all arguments of --directory option. */
330 /* Allocated size. */
332 /* Number of elements used. */
335 /* gdb init files. */
336 char *system_gdbinit;
342 struct objfile *objfile;
344 struct cleanup *pre_stat_chain;
347 /* Set this before calling make_command_stats_cleanup. */
348 lim_at_start = (char *) sbrk (0);
351 pre_stat_chain = make_command_stats_cleanup (0);
353 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
354 setlocale (LC_MESSAGES, "");
356 #if defined (HAVE_SETLOCALE)
357 setlocale (LC_CTYPE, "");
359 bindtextdomain (PACKAGE, LOCALEDIR);
360 textdomain (PACKAGE);
364 make_cleanup (VEC_cleanup (cmdarg_s), &cmdarg_vec);
366 dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg));
370 saved_command_line = (char *) xmalloc (saved_command_line_size);
371 saved_command_line[0] = '\0';
374 gdb_stdout = stdio_fileopen (stdout);
375 gdb_stderr = stdio_fileopen (stderr);
376 gdb_stdlog = gdb_stderr; /* for moment */
377 gdb_stdtarg = gdb_stderr; /* for moment */
378 gdb_stdin = stdio_fileopen (stdin);
379 gdb_stdtargerr = gdb_stderr; /* for moment */
380 gdb_stdtargin = gdb_stdin; /* for moment */
383 /* On Windows, argv[0] is not necessarily set to absolute form when
384 GDB is found along PATH, without which relocation doesn't work. */
385 gdb_program_name = windows_get_absolute_argv0 (argv[0]);
387 gdb_program_name = xstrdup (argv[0]);
390 if (! getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)))
391 /* Don't use *_filtered or warning() (which relies on
392 current_target) until after initialize_all_files(). */
393 fprintf_unfiltered (gdb_stderr,
394 _("%s: warning: error finding "
395 "working directory: %s\n"),
396 argv[0], safe_strerror (errno));
398 current_directory = gdb_dirbuf;
400 /* Set the sysroot path. */
401 gdb_sysroot = relocate_gdb_directory (TARGET_SYSTEM_ROOT,
402 TARGET_SYSTEM_ROOT_RELOCATABLE);
404 debug_file_directory = relocate_gdb_directory (DEBUGDIR,
405 DEBUGDIR_RELOCATABLE);
407 gdb_datadir = relocate_gdb_directory (GDB_DATADIR,
408 GDB_DATADIR_RELOCATABLE);
410 #ifdef WITH_PYTHON_PATH
412 /* For later use in helping Python find itself. */
413 char *tmp = concat (WITH_PYTHON_PATH, SLASH_STRING, "lib", NULL);
415 python_libdir = relocate_gdb_directory (tmp, PYTHON_PATH_RELOCATABLE);
421 add_substitute_path_rule (RELOC_SRCDIR,
422 make_relative_prefix (gdb_program_name, BINDIR,
426 /* There will always be an interpreter. Either the one passed into
427 this captured main, or one specified by the user at start up, or
428 the console. Initialize the interpreter to the one requested by
430 interpreter_p = xstrdup (context->interpreter_p);
432 /* Parse arguments and options. */
435 /* When var field is 0, use flag field to record the equivalent
436 short option (or arbitrary numbers starting at 10 for those
437 with no equivalent). */
449 static struct option long_options[] =
451 {"tui", no_argument, 0, OPT_TUI},
452 {"xdb", no_argument, &xdb_commands, 1},
453 {"dbx", no_argument, &dbx_commands, 1},
454 {"readnow", no_argument, &readnow_symbol_files, 1},
455 {"r", no_argument, &readnow_symbol_files, 1},
456 {"quiet", no_argument, &quiet, 1},
457 {"q", no_argument, &quiet, 1},
458 {"silent", no_argument, &quiet, 1},
459 {"nh", no_argument, &inhibit_home_gdbinit, 1},
460 {"nx", no_argument, &inhibit_gdbinit, 1},
461 {"n", no_argument, &inhibit_gdbinit, 1},
462 {"batch-silent", no_argument, 0, 'B'},
463 {"batch", no_argument, &batch_flag, 1},
465 /* This is a synonym for "--annotate=1". --annotate is now
466 preferred, but keep this here for a long time because people
467 will be running emacses which use --fullname. */
468 {"fullname", no_argument, 0, 'f'},
469 {"f", no_argument, 0, 'f'},
471 {"annotate", required_argument, 0, OPT_ANNOTATE},
472 {"help", no_argument, &print_help, 1},
473 {"se", required_argument, 0, OPT_SE},
474 {"symbols", required_argument, 0, 's'},
475 {"s", required_argument, 0, 's'},
476 {"exec", required_argument, 0, 'e'},
477 {"e", required_argument, 0, 'e'},
478 {"core", required_argument, 0, 'c'},
479 {"c", required_argument, 0, 'c'},
480 {"pid", required_argument, 0, 'p'},
481 {"p", required_argument, 0, 'p'},
482 {"command", required_argument, 0, 'x'},
483 {"eval-command", required_argument, 0, 'X'},
484 {"version", no_argument, &print_version, 1},
485 {"x", required_argument, 0, 'x'},
486 {"ex", required_argument, 0, 'X'},
487 {"init-command", required_argument, 0, OPT_IX},
488 {"init-eval-command", required_argument, 0, OPT_IEX},
489 {"ix", required_argument, 0, OPT_IX},
490 {"iex", required_argument, 0, OPT_IEX},
492 {"tclcommand", required_argument, 0, 'z'},
493 {"enable-external-editor", no_argument, 0, 'y'},
494 {"editor-command", required_argument, 0, 'w'},
496 {"ui", required_argument, 0, 'i'},
497 {"interpreter", required_argument, 0, 'i'},
498 {"i", required_argument, 0, 'i'},
499 {"directory", required_argument, 0, 'd'},
500 {"d", required_argument, 0, 'd'},
501 {"data-directory", required_argument, 0, 'D'},
502 {"cd", required_argument, 0, OPT_CD},
503 {"tty", required_argument, 0, 't'},
504 {"baud", required_argument, 0, 'b'},
505 {"b", required_argument, 0, 'b'},
506 {"nw", no_argument, NULL, OPT_NOWINDOWS},
507 {"nowindows", no_argument, NULL, OPT_NOWINDOWS},
508 {"w", no_argument, NULL, OPT_WINDOWS},
509 {"windows", no_argument, NULL, OPT_WINDOWS},
510 {"statistics", no_argument, 0, OPT_STATISTICS},
511 {"write", no_argument, &write_files, 1},
512 {"args", no_argument, &set_args, 1},
513 {"l", required_argument, 0, 'l'},
514 {"return-child-result", no_argument, &return_child_result, 1},
515 {0, no_argument, 0, 0}
522 c = getopt_long_only (argc, argv, "",
523 long_options, &option_index);
524 if (c == EOF || set_args)
527 /* Long option that takes an argument. */
528 if (c == 0 && long_options[option_index].flag == 0)
529 c = long_options[option_index].val;
534 /* Long option that just sets a flag. */
544 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
545 annotation_level = atoi (optarg);
548 /* Enable the display of both time and space usage. */
549 set_display_time (1);
550 set_display_space (1);
553 /* --tui is equivalent to -i=tui. */
555 xfree (interpreter_p);
556 interpreter_p = xstrdup (INTERP_TUI);
558 fprintf_unfiltered (gdb_stderr,
559 _("%s: TUI mode is not supported\n"),
565 /* FIXME: cagney/2003-03-01: Not sure if this option is
566 actually useful, and if it is, what it should do. */
568 /* --windows is equivalent to -i=insight. */
569 xfree (interpreter_p);
570 interpreter_p = xstrdup (INTERP_INSIGHT);
575 /* -nw is equivalent to -i=console. */
576 xfree (interpreter_p);
577 interpreter_p = xstrdup (INTERP_CONSOLE);
581 annotation_level = 1;
582 /* We have probably been invoked from emacs. Disable
600 struct cmdarg cmdarg = { CMDARG_FILE, optarg };
602 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
607 struct cmdarg cmdarg = { CMDARG_COMMAND, optarg };
609 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
614 struct cmdarg cmdarg = { CMDARG_INIT_FILE, optarg };
616 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
621 struct cmdarg cmdarg = { CMDARG_INIT_COMMAND, optarg };
623 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
627 batch_flag = batch_silent = 1;
628 gdb_stdout = ui_file_new();
632 gdb_datadir = xstrdup (optarg);
633 gdb_datadir_provided = 1;
638 extern int gdbtk_test (char *);
640 if (!gdbtk_test (optarg))
642 fprintf_unfiltered (gdb_stderr,
643 _("%s: unable to load "
644 "tclcommand file \"%s\""),
651 /* Backwards compatibility only. */
655 /* Set the external editor commands when gdb is farming out files
656 to be edited by another program. */
657 extern char *external_editor_command;
659 external_editor_command = xstrdup (optarg);
664 xfree (interpreter_p);
665 interpreter_p = xstrdup (optarg);
668 dirarg[ndir++] = optarg;
672 dirarg = (char **) xrealloc ((char *) dirarg,
673 dirsize * sizeof (*dirarg));
687 i = strtol (optarg, &p, 0);
688 if (i == 0 && p == optarg)
690 /* Don't use *_filtered or warning() (which relies on
691 current_target) until after initialize_all_files(). */
695 _("warning: could not set baud rate to `%s'.\n"), optarg);
705 i = strtol (optarg, &p, 0);
706 if (i == 0 && p == optarg)
708 /* Don't use *_filtered or warning() (which relies on
709 current_target) until after initialize_all_files(). */
711 fprintf_unfiltered (gdb_stderr,
712 _("warning: could not set "
713 "timeout limit to `%s'.\n"), optarg);
720 fprintf_unfiltered (gdb_stderr,
721 _("Use `%s --help' for a "
722 "complete list of options.\n"),
728 /* If --help or --version, disable window interface. */
729 if (print_help || print_version)
738 /* Initialize all files. Give the interpreter a chance to take
739 control of the console via the deprecated_init_ui_hook (). */
740 gdb_init (gdb_program_name);
742 /* Now that gdb_init has created the initial inferior, we're in
743 position to set args for that inferior. */
746 /* The remaining options are the command-line options for the
747 inferior. The first one is the sym/exec file, and the rest
751 fprintf_unfiltered (gdb_stderr,
752 _("%s: `--args' specified but "
753 "no program specified\n"),
757 symarg = argv[optind];
758 execarg = argv[optind];
760 set_inferior_args_vector (argc - optind, &argv[optind]);
764 /* OK, that's all the options. */
766 /* The first argument, if specified, is the name of the
770 symarg = argv[optind];
771 execarg = argv[optind];
775 /* If the user hasn't already specified a PID or the name of a
776 core file, then a second optional argument is allowed. If
777 present, this argument should be interpreted as either a
778 PID or a core file, whichever works. */
779 if (pidarg == NULL && corearg == NULL && optind < argc)
781 pid_or_core_arg = argv[optind];
785 /* Any argument left on the command line is unexpected and
786 will be ignored. Inform the user. */
788 fprintf_unfiltered (gdb_stderr,
789 _("Excess command line "
790 "arguments ignored. (%s%s)\n"),
792 (optind == argc - 1) ? "" : " ...");
795 /* Lookup gdbinit files. Note that the gdbinit file name may be
796 overriden during file initialization, so get_init_files should be
797 called after gdb_init. */
798 get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
800 /* Do these (and anything which might call wrap_here or *_filtered)
801 after initialize_all_files() but before the interpreter has been
802 installed. Otherwize the help/version messages will be eaten by
803 the interpreter's output handler. */
807 print_gdb_version (gdb_stdout);
809 printf_filtered ("\n");
815 print_gdb_help (gdb_stdout);
816 fputs_unfiltered ("\n", gdb_stdout);
820 /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
821 GDB retain the old MI1 interpreter startup behavior. Output the
822 copyright message before the interpreter is installed. That way
823 it isn't encapsulated in MI output. */
824 if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0)
826 /* Print all the junk at the top, with trailing "..." if we are
827 about to read a symbol file (possibly slowly). */
828 print_gdb_version (gdb_stdout);
830 printf_filtered ("..");
832 printf_filtered ("\n");
833 gdb_flush (gdb_stdout); /* Force to screen during slow
837 /* Install the default UI. All the interpreters should have had a
838 look at things by now. Initialize the default interpreter. */
842 struct interp *interp = interp_lookup (interpreter_p);
845 error (_("Interpreter `%s' unrecognized"), interpreter_p);
847 if (!interp_set (interp, 1))
849 fprintf_unfiltered (gdb_stderr,
850 "Interpreter `%s' failed to initialize.\n",
856 /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
857 GDB retain the old MI1 interpreter startup behavior. Output the
858 copyright message after the interpreter is installed when it is
859 any sane interpreter. */
860 if (!quiet && !current_interp_named_p (INTERP_MI1))
862 /* Print all the junk at the top, with trailing "..." if we are
863 about to read a symbol file (possibly slowly). */
864 print_gdb_version (gdb_stdout);
866 printf_filtered ("..");
868 printf_filtered ("\n");
869 gdb_flush (gdb_stdout); /* Force to screen during slow
873 /* Set off error and warning messages with a blank line. */
874 error_pre_print = "\n";
875 quit_pre_print = error_pre_print;
876 warning_pre_print = _("\nwarning: ");
878 /* Read and execute the system-wide gdbinit file, if it exists.
879 This is done *before* all the command line arguments are
880 processed; it sets global parameters, which are independent of
881 what file you are debugging or what directory you are in. */
882 if (system_gdbinit && !inhibit_gdbinit)
883 catch_command_errors (source_script, system_gdbinit, 0, RETURN_MASK_ALL);
885 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
886 *before* all the command line arguments are processed; it sets
887 global parameters, which are independent of what file you are
888 debugging or what directory you are in. */
890 if (home_gdbinit && !inhibit_gdbinit && !inhibit_home_gdbinit)
891 catch_command_errors (source_script, home_gdbinit, 0, RETURN_MASK_ALL);
893 /* Process '-ix' and '-iex' options early. */
894 for (i = 0; VEC_iterate (cmdarg_s, cmdarg_vec, i, cmdarg_p); i++)
895 switch (cmdarg_p->type)
897 case CMDARG_INIT_FILE:
898 catch_command_errors (source_script, cmdarg_p->string,
899 !batch_flag, RETURN_MASK_ALL);
901 case CMDARG_INIT_COMMAND:
902 catch_command_errors (execute_command, cmdarg_p->string,
903 !batch_flag, RETURN_MASK_ALL);
907 /* Now perform all the actions indicated by the arguments. */
910 catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL);
913 for (i = 0; i < ndir; i++)
914 catch_command_errors (directory_switch, dirarg[i], 0, RETURN_MASK_ALL);
917 /* Skip auto-loading section-specified scripts until we've sourced
918 local_gdbinit (which is often used to augment the source search
920 save_auto_load = global_auto_load;
921 global_auto_load = 0;
925 && strcmp (execarg, symarg) == 0)
927 /* The exec file and the symbol-file are the same. If we can't
928 open it, better only print one error message.
929 catch_command_errors returns non-zero on success! */
930 if (catch_command_errors (exec_file_attach, execarg,
931 !batch_flag, RETURN_MASK_ALL))
932 catch_command_errors (symbol_file_add_main, symarg,
933 !batch_flag, RETURN_MASK_ALL);
938 catch_command_errors (exec_file_attach, execarg,
939 !batch_flag, RETURN_MASK_ALL);
941 catch_command_errors (symbol_file_add_main, symarg,
942 !batch_flag, RETURN_MASK_ALL);
945 if (corearg && pidarg)
946 error (_("Can't attach to process and specify "
947 "a core file at the same time."));
950 catch_command_errors (core_file_command, corearg,
951 !batch_flag, RETURN_MASK_ALL);
952 else if (pidarg != NULL)
953 catch_command_errors (attach_command, pidarg,
954 !batch_flag, RETURN_MASK_ALL);
955 else if (pid_or_core_arg)
957 /* The user specified 'gdb program pid' or gdb program core'.
958 If pid_or_core_arg's first character is a digit, try attach
959 first and then corefile. Otherwise try just corefile. */
961 if (isdigit (pid_or_core_arg[0]))
963 if (catch_command_errors (attach_command, pid_or_core_arg,
964 !batch_flag, RETURN_MASK_ALL) == 0)
965 catch_command_errors (core_file_command, pid_or_core_arg,
966 !batch_flag, RETURN_MASK_ALL);
968 else /* Can't be a pid, better be a corefile. */
969 catch_command_errors (core_file_command, pid_or_core_arg,
970 !batch_flag, RETURN_MASK_ALL);
974 set_inferior_io_terminal (ttyarg);
976 /* Error messages should no longer be distinguished with extra output. */
977 error_pre_print = NULL;
978 quit_pre_print = NULL;
979 warning_pre_print = _("warning: ");
981 /* Read the .gdbinit file in the current directory, *if* it isn't
982 the same as the $HOME/.gdbinit file (it should exist, also). */
985 auto_load_local_gdbinit_pathname = gdb_realpath (local_gdbinit);
987 if (!inhibit_gdbinit && auto_load_local_gdbinit
988 && file_is_auto_load_safe (local_gdbinit,
989 _("auto-load: Loading .gdbinit "
993 auto_load_local_gdbinit_loaded = 1;
995 catch_command_errors (source_script, local_gdbinit, 0,
1000 /* Now that all .gdbinit's have been read and all -d options have been
1001 processed, we can read any scripts mentioned in SYMARG.
1002 We wait until now because it is common to add to the source search
1003 path in local_gdbinit. */
1004 global_auto_load = save_auto_load;
1005 ALL_OBJFILES (objfile)
1006 load_auto_scripts_for_objfile (objfile);
1008 /* Process '-x' and '-ex' options. */
1009 for (i = 0; VEC_iterate (cmdarg_s, cmdarg_vec, i, cmdarg_p); i++)
1010 switch (cmdarg_p->type)
1013 catch_command_errors (source_script, cmdarg_p->string,
1014 !batch_flag, RETURN_MASK_ALL);
1016 case CMDARG_COMMAND:
1017 catch_command_errors (execute_command, cmdarg_p->string,
1018 !batch_flag, RETURN_MASK_ALL);
1022 /* Read in the old history after all the command files have been
1028 /* We have hit the end of the batch file. */
1029 quit_force (NULL, 0);
1032 /* Show time and/or space usage. */
1033 do_cleanups (pre_stat_chain);
1035 /* NOTE: cagney/1999-11-07: There is probably no reason for not
1036 moving this loop and the code found in captured_command_loop()
1037 into the command_loop() proper. The main thing holding back that
1038 change - SET_TOP_LEVEL() - has been eliminated. */
1041 catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL);
1043 /* No exit -- exit is through quit_command. */
1047 gdb_main (struct captured_main_args *args)
1049 use_windows = args->use_windows;
1050 catch_errors (captured_main, args, "", RETURN_MASK_ALL);
1051 /* The only way to end up here is by an error (normal exit is
1052 handled by quit_force()), hence always return an error status. */
1057 /* Don't use *_filtered for printing help. We don't want to prompt
1058 for continue no matter how small the screen or how much we're going
1062 print_gdb_help (struct ui_file *stream)
1064 char *system_gdbinit;
1066 char *local_gdbinit;
1068 get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
1070 fputs_unfiltered (_("\
1071 This is the GNU debugger. Usage:\n\n\
1072 gdb [options] [executable-file [core-file or process-id]]\n\
1073 gdb [options] --args executable-file [inferior-arguments ...]\n\n\
1076 fputs_unfiltered (_("\
1077 --args Arguments after executable-file are passed to inferior\n\
1079 fputs_unfiltered (_("\
1080 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
1081 --batch Exit after processing options.\n\
1082 --batch-silent As for --batch, but suppress all gdb stdout output.\n\
1083 --return-child-result\n\
1084 GDB exit code will be the child's exit code.\n\
1085 --cd=DIR Change current directory to DIR.\n\
1086 --command=FILE, -x Execute GDB commands from FILE.\n\
1087 --eval-command=COMMAND, -ex\n\
1088 Execute a single GDB command.\n\
1089 May be used multiple times and in conjunction\n\
1091 --init-command=FILE, -ix Like -x but execute it before loading inferior.\n\
1092 --init-eval-command=COMMAND, -iex Like -ex but before loading inferior.\n\
1093 --core=COREFILE Analyze the core dump COREFILE.\n\
1094 --pid=PID Attach to running process PID.\n\
1096 fputs_unfiltered (_("\
1097 --dbx DBX compatibility mode.\n\
1098 --directory=DIR Search for source files in DIR.\n\
1099 --exec=EXECFILE Use EXECFILE as the executable.\n\
1100 --fullname Output information used by emacs-GDB interface.\n\
1101 --help Print this message.\n\
1103 fputs_unfiltered (_("\
1104 --interpreter=INTERP\n\
1105 Select a specific interpreter / user interface\n\
1107 fputs_unfiltered (_("\
1108 -l TIMEOUT Set timeout in seconds for remote debugging.\n\
1109 --nw Do not use a window interface.\n\
1110 --nx Do not read any "), stream);
1111 fputs_unfiltered (gdbinit, stream);
1112 fputs_unfiltered (_(" files.\n\
1113 --nh Do not read "), stream);
1114 fputs_unfiltered (gdbinit, stream);
1115 fputs_unfiltered (_(" file from home directory.\n\
1116 --quiet Do not print version number on startup.\n\
1117 --readnow Fully read symbol files on first access.\n\
1119 fputs_unfiltered (_("\
1120 --se=FILE Use FILE as symbol file and executable file.\n\
1121 --symbols=SYMFILE Read symbols from SYMFILE.\n\
1122 --tty=TTY Use TTY for input/output by the program being debugged.\n\
1125 fputs_unfiltered (_("\
1126 --tui Use a terminal user interface.\n\
1129 fputs_unfiltered (_("\
1130 --version Print version information and then exit.\n\
1131 -w Use a window interface.\n\
1132 --write Set writing into executable and core files.\n\
1133 --xdb XDB compatibility mode.\n\
1135 fputs_unfiltered (_("\n\
1136 At startup, GDB reads the following init files and executes their commands:\n\
1139 fprintf_unfiltered (stream, _("\
1140 * system-wide init file: %s\n\
1141 "), system_gdbinit);
1143 fprintf_unfiltered (stream, _("\
1144 * user-specific init file: %s\n\
1147 fprintf_unfiltered (stream, _("\
1148 * local init file (see also 'set auto-load local-gdbinit'): ./%s\n\
1150 fputs_unfiltered (_("\n\
1151 For more information, type \"help\" from within GDB, or consult the\n\
1152 GDB manual (available as on-line info or a printed manual).\n\
1154 if (REPORT_BUGS_TO[0] && stream == gdb_stdout)
1155 fprintf_unfiltered (stream, _("\
1156 Report bugs to \"%s\".\n\
1157 "), REPORT_BUGS_TO);