1 /* Top level stuff for GDB, the GNU debugger.
3 Copyright (C) 1986-2014 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>
35 #include "event-loop.h"
41 #include "cli/cli-cmds.h"
43 #include "auto-load.h"
46 #include "filenames.h"
47 #include "filestuff.h"
49 /* The selected interpreter. This will be used as a set command
50 variable, so it should always be malloc'ed - since
51 do_setshow_command will free it. */
54 /* Whether xdb commands will be handled. */
57 /* Whether dbx commands will be handled. */
60 /* System root path, used to find libraries etc. */
61 char *gdb_sysroot = 0;
63 /* GDB datadir, used to store data files. */
64 char *gdb_datadir = 0;
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;
71 /* If gdb was configured with --with-python=/path,
72 the possibly relocated path to python's lib directory. */
73 char *python_libdir = 0;
75 struct ui_file *gdb_stdout;
76 struct ui_file *gdb_stderr;
77 struct ui_file *gdb_stdlog;
78 struct ui_file *gdb_stdin;
79 /* Target IO streams. */
80 struct ui_file *gdb_stdtargin;
81 struct ui_file *gdb_stdtarg;
82 struct ui_file *gdb_stdtargerr;
84 /* True if --batch or --batch-silent was seen. */
87 /* Support for the --batch-silent option. */
90 /* Support for --return-child-result option.
91 Set the default to -1 to return error in the case
92 that the program does not run or does not complete. */
93 int return_child_result = 0;
94 int return_child_result_value = -1;
97 /* GDB as it has been invoked from the command line (i.e. argv[0]). */
98 static char *gdb_program_name;
100 /* Return read only pointer to GDB_PROGRAM_NAME. */
102 get_gdb_program_name (void)
104 return gdb_program_name;
107 static void print_gdb_help (struct ui_file *);
109 /* Relocate a file or directory. PROGNAME is the name by which gdb
110 was invoked (i.e., argv[0]). INITIAL is the default value for the
111 file or directory. FLAG is true if the value is relocatable, false
112 otherwise. Returns a newly allocated string; this may return NULL
113 under the same conditions as make_relative_prefix. */
116 relocate_path (const char *progname, const char *initial, int flag)
119 return make_relative_prefix (progname, BINDIR, initial);
120 return xstrdup (initial);
123 /* Like relocate_path, but specifically checks for a directory.
124 INITIAL is relocated according to the rules of relocate_path. If
125 the result is a directory, it is used; otherwise, INITIAL is used.
126 The chosen directory is then canonicalized using lrealpath. This
127 function always returns a newly-allocated string. */
130 relocate_gdb_directory (const char *initial, int flag)
134 dir = relocate_path (gdb_program_name, initial, flag);
139 if (*dir == '\0' || stat (dir, &s) != 0 || !S_ISDIR (s.st_mode))
146 dir = xstrdup (initial);
148 /* Canonicalize the directory. */
151 char *canon_sysroot = lrealpath (dir);
163 /* Compute the locations of init files that GDB should source and
164 return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If
165 there is no system gdbinit (resp. home gdbinit and local gdbinit)
166 to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
167 LOCAL_GDBINIT) is set to NULL. */
169 get_init_files (const char **system_gdbinit,
170 const char **home_gdbinit,
171 const char **local_gdbinit)
173 static const char *sysgdbinit = NULL;
174 static char *homeinit = NULL;
175 static const char *localinit = NULL;
176 static int initialized = 0;
180 struct stat homebuf, cwdbuf, s;
183 if (SYSTEM_GDBINIT[0])
185 int datadir_len = strlen (GDB_DATADIR);
186 int sys_gdbinit_len = strlen (SYSTEM_GDBINIT);
187 char *relocated_sysgdbinit;
189 /* If SYSTEM_GDBINIT lives in data-directory, and data-directory
190 has been provided, search for SYSTEM_GDBINIT there. */
191 if (gdb_datadir_provided
192 && datadir_len < sys_gdbinit_len
193 && filename_ncmp (SYSTEM_GDBINIT, GDB_DATADIR, datadir_len) == 0
194 && IS_DIR_SEPARATOR (SYSTEM_GDBINIT[datadir_len]))
196 /* Append the part of SYSTEM_GDBINIT that follows GDB_DATADIR
198 char *tmp_sys_gdbinit = xstrdup (SYSTEM_GDBINIT + datadir_len);
201 for (p = tmp_sys_gdbinit; IS_DIR_SEPARATOR (*p); ++p)
203 relocated_sysgdbinit = concat (gdb_datadir, SLASH_STRING, p,
205 xfree (tmp_sys_gdbinit);
209 relocated_sysgdbinit = relocate_path (gdb_program_name,
211 SYSTEM_GDBINIT_RELOCATABLE);
213 if (relocated_sysgdbinit && stat (relocated_sysgdbinit, &s) == 0)
214 sysgdbinit = relocated_sysgdbinit;
216 xfree (relocated_sysgdbinit);
219 homedir = getenv ("HOME");
221 /* If the .gdbinit file in the current directory is the same as
222 the $HOME/.gdbinit file, it should not be sourced. homebuf
223 and cwdbuf are used in that purpose. Make sure that the stats
224 are zero in case one of them fails (this guarantees that they
225 won't match if either exists). */
227 memset (&homebuf, 0, sizeof (struct stat));
228 memset (&cwdbuf, 0, sizeof (struct stat));
232 homeinit = xstrprintf ("%s/%s", homedir, gdbinit);
233 if (stat (homeinit, &homebuf) != 0)
240 if (stat (gdbinit, &cwdbuf) == 0)
243 || memcmp ((char *) &homebuf, (char *) &cwdbuf,
244 sizeof (struct stat)))
251 *system_gdbinit = sysgdbinit;
252 *home_gdbinit = homeinit;
253 *local_gdbinit = localinit;
256 /* Call command_loop. If it happens to return, pass that through as a
257 non-zero return status. */
260 captured_command_loop (void *data)
262 /* Top-level execution commands can be run in the background from
264 interpreter_async = 1;
266 current_interp_command_loop ();
267 /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
268 would clean things up (restoring the cleanup chain) to the state
269 they were just prior to the call. Technically, this means that
270 the do_cleanups() below is redundant. Unfortunately, many FUNCs
271 are not that well behaved. do_cleanups should either be replaced
272 with a do_cleanups call (to cover the problem) or an assertion
273 check to detect bad FUNCs code. */
274 do_cleanups (all_cleanups ());
275 /* If the command_loop returned, normally (rather than threw an
276 error) we try to quit. If the quit is aborted, catch_errors()
277 which called this catch the signal and restart the command
279 quit_command (NULL, instream == stdin);
283 /* Arguments of --command option and its counterpart. */
284 typedef struct cmdarg {
285 /* Type of this option. */
287 /* Option type -x. */
290 /* Option type -ex. */
293 /* Option type -ix. */
296 /* Option type -iex. */
300 /* Value of this option - filename or the GDB command itself. String memory
301 is not owned by this structure despite it is 'const'. */
305 /* Define type VEC (cmdarg_s). */
306 DEF_VEC_O (cmdarg_s);
309 captured_main (void *data)
311 struct captured_main_args *context = data;
312 int argc = context->argc;
313 char **argv = context->argv;
314 static int quiet = 0;
315 static int set_args = 0;
316 static int inhibit_home_gdbinit = 0;
318 /* Pointers to various arguments from command line. */
320 char *execarg = NULL;
322 char *corearg = NULL;
323 char *pid_or_core_arg = NULL;
327 /* These are static so that we can take their address in an
329 static int print_help;
330 static int print_version;
331 static int print_configuration;
333 /* Pointers to all arguments of --command option. */
334 VEC (cmdarg_s) *cmdarg_vec = NULL;
335 struct cmdarg *cmdarg_p;
337 /* Indices of all arguments of --directory option. */
339 /* Allocated size. */
341 /* Number of elements used. */
344 /* gdb init files. */
345 const char *system_gdbinit;
346 const char *home_gdbinit;
347 const char *local_gdbinit;
351 struct objfile *objfile;
353 struct cleanup *pre_stat_chain;
356 /* Set this before calling make_command_stats_cleanup. */
357 lim_at_start = (char *) sbrk (0);
360 pre_stat_chain = make_command_stats_cleanup (0);
362 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
363 setlocale (LC_MESSAGES, "");
365 #if defined (HAVE_SETLOCALE)
366 setlocale (LC_CTYPE, "");
368 bindtextdomain (PACKAGE, LOCALEDIR);
369 textdomain (PACKAGE);
374 make_cleanup (VEC_cleanup (cmdarg_s), &cmdarg_vec);
376 dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg));
380 saved_command_line = (char *) xmalloc (saved_command_line_size);
381 saved_command_line[0] = '\0';
385 /* Ensure stderr is unbuffered. A Cygwin pty or pipe is implemented
386 as a Windows pipe, and Windows buffers on pipes. */
387 setvbuf (stderr, NULL, _IONBF, BUFSIZ);
390 gdb_stdout = stdio_fileopen (stdout);
391 gdb_stderr = stderr_fileopen ();
393 gdb_stdlog = gdb_stderr; /* for moment */
394 gdb_stdtarg = gdb_stderr; /* for moment */
395 gdb_stdin = stdio_fileopen (stdin);
396 gdb_stdtargerr = gdb_stderr; /* for moment */
397 gdb_stdtargin = gdb_stdin; /* for moment */
400 /* On Windows, argv[0] is not necessarily set to absolute form when
401 GDB is found along PATH, without which relocation doesn't work. */
402 gdb_program_name = windows_get_absolute_argv0 (argv[0]);
404 gdb_program_name = xstrdup (argv[0]);
407 if (! getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)))
408 /* Don't use *_filtered or warning() (which relies on
409 current_target) until after initialize_all_files(). */
410 fprintf_unfiltered (gdb_stderr,
411 _("%s: warning: error finding "
412 "working directory: %s\n"),
413 argv[0], safe_strerror (errno));
415 current_directory = gdb_dirbuf;
417 /* Set the sysroot path. */
418 gdb_sysroot = relocate_gdb_directory (TARGET_SYSTEM_ROOT,
419 TARGET_SYSTEM_ROOT_RELOCATABLE);
421 debug_file_directory = relocate_gdb_directory (DEBUGDIR,
422 DEBUGDIR_RELOCATABLE);
424 gdb_datadir = relocate_gdb_directory (GDB_DATADIR,
425 GDB_DATADIR_RELOCATABLE);
427 #ifdef WITH_PYTHON_PATH
429 /* For later use in helping Python find itself. */
430 char *tmp = concat (WITH_PYTHON_PATH, SLASH_STRING, "lib", NULL);
432 python_libdir = relocate_gdb_directory (tmp, PYTHON_PATH_RELOCATABLE);
438 add_substitute_path_rule (RELOC_SRCDIR,
439 make_relative_prefix (gdb_program_name, BINDIR,
443 /* There will always be an interpreter. Either the one passed into
444 this captured main, or one specified by the user at start up, or
445 the console. Initialize the interpreter to the one requested by
447 interpreter_p = xstrdup (context->interpreter_p);
449 /* Parse arguments and options. */
452 /* When var field is 0, use flag field to record the equivalent
453 short option (or arbitrary numbers starting at 10 for those
454 with no equivalent). */
466 static struct option long_options[] =
468 {"tui", no_argument, 0, OPT_TUI},
469 {"xdb", no_argument, &xdb_commands, 1},
470 {"dbx", no_argument, &dbx_commands, 1},
471 {"readnow", no_argument, &readnow_symbol_files, 1},
472 {"r", no_argument, &readnow_symbol_files, 1},
473 {"quiet", no_argument, &quiet, 1},
474 {"q", no_argument, &quiet, 1},
475 {"silent", no_argument, &quiet, 1},
476 {"nh", no_argument, &inhibit_home_gdbinit, 1},
477 {"nx", no_argument, &inhibit_gdbinit, 1},
478 {"n", no_argument, &inhibit_gdbinit, 1},
479 {"batch-silent", no_argument, 0, 'B'},
480 {"batch", no_argument, &batch_flag, 1},
482 /* This is a synonym for "--annotate=1". --annotate is now
483 preferred, but keep this here for a long time because people
484 will be running emacses which use --fullname. */
485 {"fullname", no_argument, 0, 'f'},
486 {"f", no_argument, 0, 'f'},
488 {"annotate", required_argument, 0, OPT_ANNOTATE},
489 {"help", no_argument, &print_help, 1},
490 {"se", required_argument, 0, OPT_SE},
491 {"symbols", required_argument, 0, 's'},
492 {"s", required_argument, 0, 's'},
493 {"exec", required_argument, 0, 'e'},
494 {"e", required_argument, 0, 'e'},
495 {"core", required_argument, 0, 'c'},
496 {"c", required_argument, 0, 'c'},
497 {"pid", required_argument, 0, 'p'},
498 {"p", required_argument, 0, 'p'},
499 {"command", required_argument, 0, 'x'},
500 {"eval-command", required_argument, 0, 'X'},
501 {"version", no_argument, &print_version, 1},
502 {"configuration", no_argument, &print_configuration, 1},
503 {"x", required_argument, 0, 'x'},
504 {"ex", required_argument, 0, 'X'},
505 {"init-command", required_argument, 0, OPT_IX},
506 {"init-eval-command", required_argument, 0, OPT_IEX},
507 {"ix", required_argument, 0, OPT_IX},
508 {"iex", required_argument, 0, OPT_IEX},
510 {"tclcommand", required_argument, 0, 'z'},
511 {"enable-external-editor", no_argument, 0, 'y'},
512 {"editor-command", required_argument, 0, 'w'},
514 {"ui", required_argument, 0, 'i'},
515 {"interpreter", required_argument, 0, 'i'},
516 {"i", required_argument, 0, 'i'},
517 {"directory", required_argument, 0, 'd'},
518 {"d", required_argument, 0, 'd'},
519 {"data-directory", required_argument, 0, 'D'},
520 {"cd", required_argument, 0, OPT_CD},
521 {"tty", required_argument, 0, 't'},
522 {"baud", required_argument, 0, 'b'},
523 {"b", required_argument, 0, 'b'},
524 {"nw", no_argument, NULL, OPT_NOWINDOWS},
525 {"nowindows", no_argument, NULL, OPT_NOWINDOWS},
526 {"w", no_argument, NULL, OPT_WINDOWS},
527 {"windows", no_argument, NULL, OPT_WINDOWS},
528 {"statistics", no_argument, 0, OPT_STATISTICS},
529 {"write", no_argument, &write_files, 1},
530 {"args", no_argument, &set_args, 1},
531 {"l", required_argument, 0, 'l'},
532 {"return-child-result", no_argument, &return_child_result, 1},
533 {0, no_argument, 0, 0}
540 c = getopt_long_only (argc, argv, "",
541 long_options, &option_index);
542 if (c == EOF || set_args)
545 /* Long option that takes an argument. */
546 if (c == 0 && long_options[option_index].flag == 0)
547 c = long_options[option_index].val;
552 /* Long option that just sets a flag. */
562 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
563 annotation_level = atoi (optarg);
566 /* Enable the display of both time and space usage. */
567 set_per_command_time (1);
568 set_per_command_space (1);
571 /* --tui is equivalent to -i=tui. */
573 xfree (interpreter_p);
574 interpreter_p = xstrdup (INTERP_TUI);
576 fprintf_unfiltered (gdb_stderr,
577 _("%s: TUI mode is not supported\n"),
583 /* FIXME: cagney/2003-03-01: Not sure if this option is
584 actually useful, and if it is, what it should do. */
586 /* --windows is equivalent to -i=insight. */
587 xfree (interpreter_p);
588 interpreter_p = xstrdup (INTERP_INSIGHT);
592 /* -nw is equivalent to -i=console. */
593 xfree (interpreter_p);
594 interpreter_p = xstrdup (INTERP_CONSOLE);
597 annotation_level = 1;
613 struct cmdarg cmdarg = { CMDARG_FILE, optarg };
615 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
620 struct cmdarg cmdarg = { CMDARG_COMMAND, optarg };
622 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
627 struct cmdarg cmdarg = { CMDARG_INIT_FILE, optarg };
629 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
634 struct cmdarg cmdarg = { CMDARG_INIT_COMMAND, optarg };
636 VEC_safe_push (cmdarg_s, cmdarg_vec, &cmdarg);
640 batch_flag = batch_silent = 1;
641 gdb_stdout = ui_file_new();
645 gdb_datadir = xstrdup (optarg);
646 gdb_datadir_provided = 1;
651 extern int gdbtk_test (char *);
653 if (!gdbtk_test (optarg))
655 fprintf_unfiltered (gdb_stderr,
656 _("%s: unable to load "
657 "tclcommand file \"%s\""),
664 /* Backwards compatibility only. */
668 /* Set the external editor commands when gdb is farming out files
669 to be edited by another program. */
670 extern char *external_editor_command;
672 external_editor_command = xstrdup (optarg);
677 xfree (interpreter_p);
678 interpreter_p = xstrdup (optarg);
681 dirarg[ndir++] = optarg;
685 dirarg = (char **) xrealloc ((char *) dirarg,
686 dirsize * sizeof (*dirarg));
700 i = strtol (optarg, &p, 0);
701 if (i == 0 && p == optarg)
703 /* Don't use *_filtered or warning() (which relies on
704 current_target) until after initialize_all_files(). */
708 _("warning: could not set baud rate to `%s'.\n"), optarg);
718 i = strtol (optarg, &p, 0);
719 if (i == 0 && p == optarg)
721 /* Don't use *_filtered or warning() (which relies on
722 current_target) until after initialize_all_files(). */
724 fprintf_unfiltered (gdb_stderr,
725 _("warning: could not set "
726 "timeout limit to `%s'.\n"), optarg);
733 fprintf_unfiltered (gdb_stderr,
734 _("Use `%s --help' for a "
735 "complete list of options.\n"),
745 /* Initialize all files. Give the interpreter a chance to take
746 control of the console via the deprecated_init_ui_hook (). */
747 gdb_init (gdb_program_name);
749 /* Now that gdb_init has created the initial inferior, we're in
750 position to set args for that inferior. */
753 /* The remaining options are the command-line options for the
754 inferior. The first one is the sym/exec file, and the rest
758 fprintf_unfiltered (gdb_stderr,
759 _("%s: `--args' specified but "
760 "no program specified\n"),
764 symarg = argv[optind];
765 execarg = argv[optind];
767 set_inferior_args_vector (argc - optind, &argv[optind]);
771 /* OK, that's all the options. */
773 /* The first argument, if specified, is the name of the
777 symarg = argv[optind];
778 execarg = argv[optind];
782 /* If the user hasn't already specified a PID or the name of a
783 core file, then a second optional argument is allowed. If
784 present, this argument should be interpreted as either a
785 PID or a core file, whichever works. */
786 if (pidarg == NULL && corearg == NULL && optind < argc)
788 pid_or_core_arg = argv[optind];
792 /* Any argument left on the command line is unexpected and
793 will be ignored. Inform the user. */
795 fprintf_unfiltered (gdb_stderr,
796 _("Excess command line "
797 "arguments ignored. (%s%s)\n"),
799 (optind == argc - 1) ? "" : " ...");
802 /* Lookup gdbinit files. Note that the gdbinit file name may be
803 overriden during file initialization, so get_init_files should be
804 called after gdb_init. */
805 get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
807 /* Do these (and anything which might call wrap_here or *_filtered)
808 after initialize_all_files() but before the interpreter has been
809 installed. Otherwize the help/version messages will be eaten by
810 the interpreter's output handler. */
814 print_gdb_version (gdb_stdout);
816 printf_filtered ("\n");
822 print_gdb_help (gdb_stdout);
823 fputs_unfiltered ("\n", gdb_stdout);
827 if (print_configuration)
829 print_gdb_configuration (gdb_stdout);
831 printf_filtered ("\n");
835 /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
836 GDB retain the old MI1 interpreter startup behavior. Output the
837 copyright message before the interpreter is installed. That way
838 it isn't encapsulated in MI output. */
839 if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0)
841 /* Print all the junk at the top, with trailing "..." if we are
842 about to read a symbol file (possibly slowly). */
843 print_gdb_version (gdb_stdout);
845 printf_filtered ("..");
847 printf_filtered ("\n");
848 gdb_flush (gdb_stdout); /* Force to screen during slow
852 /* Install the default UI. All the interpreters should have had a
853 look at things by now. Initialize the default interpreter. */
857 struct interp *interp = interp_lookup (interpreter_p);
860 error (_("Interpreter `%s' unrecognized"), interpreter_p);
862 if (!interp_set (interp, 1))
864 fprintf_unfiltered (gdb_stderr,
865 "Interpreter `%s' failed to initialize.\n",
871 /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
872 GDB retain the old MI1 interpreter startup behavior. Output the
873 copyright message after the interpreter is installed when it is
874 any sane interpreter. */
875 if (!quiet && !current_interp_named_p (INTERP_MI1))
877 /* Print all the junk at the top, with trailing "..." if we are
878 about to read a symbol file (possibly slowly). */
879 print_gdb_version (gdb_stdout);
881 printf_filtered ("..");
883 printf_filtered ("\n");
884 gdb_flush (gdb_stdout); /* Force to screen during slow
888 /* Set off error and warning messages with a blank line. */
889 warning_pre_print = _("\nwarning: ");
891 /* Read and execute the system-wide gdbinit file, if it exists.
892 This is done *before* all the command line arguments are
893 processed; it sets global parameters, which are independent of
894 what file you are debugging or what directory you are in. */
895 if (system_gdbinit && !inhibit_gdbinit)
896 catch_command_errors_const (source_script, system_gdbinit,
899 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
900 *before* all the command line arguments are processed; it sets
901 global parameters, which are independent of what file you are
902 debugging or what directory you are in. */
904 if (home_gdbinit && !inhibit_gdbinit && !inhibit_home_gdbinit)
905 catch_command_errors_const (source_script,
906 home_gdbinit, 0, RETURN_MASK_ALL);
908 /* Process '-ix' and '-iex' options early. */
909 for (i = 0; VEC_iterate (cmdarg_s, cmdarg_vec, i, cmdarg_p); i++)
910 switch (cmdarg_p->type)
912 case CMDARG_INIT_FILE:
913 catch_command_errors_const (source_script, cmdarg_p->string,
914 !batch_flag, RETURN_MASK_ALL);
916 case CMDARG_INIT_COMMAND:
917 catch_command_errors (execute_command, cmdarg_p->string,
918 !batch_flag, RETURN_MASK_ALL);
922 /* Now perform all the actions indicated by the arguments. */
925 catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL);
928 for (i = 0; i < ndir; i++)
929 catch_command_errors (directory_switch, dirarg[i], 0, RETURN_MASK_ALL);
932 /* Skip auto-loading section-specified scripts until we've sourced
933 local_gdbinit (which is often used to augment the source search
935 save_auto_load = global_auto_load;
936 global_auto_load = 0;
940 && strcmp (execarg, symarg) == 0)
942 /* The exec file and the symbol-file are the same. If we can't
943 open it, better only print one error message.
944 catch_command_errors returns non-zero on success! */
945 if (catch_command_errors (exec_file_attach, execarg,
946 !batch_flag, RETURN_MASK_ALL))
947 catch_command_errors_const (symbol_file_add_main, symarg,
948 !batch_flag, RETURN_MASK_ALL);
953 catch_command_errors (exec_file_attach, execarg,
954 !batch_flag, RETURN_MASK_ALL);
956 catch_command_errors_const (symbol_file_add_main, symarg,
957 !batch_flag, RETURN_MASK_ALL);
960 if (corearg && pidarg)
961 error (_("Can't attach to process and specify "
962 "a core file at the same time."));
965 catch_command_errors (core_file_command, corearg,
966 !batch_flag, RETURN_MASK_ALL);
967 else if (pidarg != NULL)
968 catch_command_errors (attach_command, pidarg,
969 !batch_flag, RETURN_MASK_ALL);
970 else if (pid_or_core_arg)
972 /* The user specified 'gdb program pid' or gdb program core'.
973 If pid_or_core_arg's first character is a digit, try attach
974 first and then corefile. Otherwise try just corefile. */
976 if (isdigit (pid_or_core_arg[0]))
978 if (catch_command_errors (attach_command, pid_or_core_arg,
979 !batch_flag, RETURN_MASK_ALL) == 0)
980 catch_command_errors (core_file_command, pid_or_core_arg,
981 !batch_flag, RETURN_MASK_ALL);
983 else /* Can't be a pid, better be a corefile. */
984 catch_command_errors (core_file_command, pid_or_core_arg,
985 !batch_flag, RETURN_MASK_ALL);
989 set_inferior_io_terminal (ttyarg);
991 /* Error messages should no longer be distinguished with extra output. */
992 warning_pre_print = _("warning: ");
994 /* Read the .gdbinit file in the current directory, *if* it isn't
995 the same as the $HOME/.gdbinit file (it should exist, also). */
998 auto_load_local_gdbinit_pathname = gdb_realpath (local_gdbinit);
1000 if (!inhibit_gdbinit && auto_load_local_gdbinit
1001 && file_is_auto_load_safe (local_gdbinit,
1002 _("auto-load: Loading .gdbinit "
1006 auto_load_local_gdbinit_loaded = 1;
1008 catch_command_errors_const (source_script, local_gdbinit, 0,
1013 /* Now that all .gdbinit's have been read and all -d options have been
1014 processed, we can read any scripts mentioned in SYMARG.
1015 We wait until now because it is common to add to the source search
1016 path in local_gdbinit. */
1017 global_auto_load = save_auto_load;
1018 ALL_OBJFILES (objfile)
1019 load_auto_scripts_for_objfile (objfile);
1021 /* Process '-x' and '-ex' options. */
1022 for (i = 0; VEC_iterate (cmdarg_s, cmdarg_vec, i, cmdarg_p); i++)
1023 switch (cmdarg_p->type)
1026 catch_command_errors_const (source_script, cmdarg_p->string,
1027 !batch_flag, RETURN_MASK_ALL);
1029 case CMDARG_COMMAND:
1030 catch_command_errors (execute_command, cmdarg_p->string,
1031 !batch_flag, RETURN_MASK_ALL);
1035 /* Read in the old history after all the command files have been
1041 /* We have hit the end of the batch file. */
1042 quit_force (NULL, 0);
1045 /* Show time and/or space usage. */
1046 do_cleanups (pre_stat_chain);
1048 /* NOTE: cagney/1999-11-07: There is probably no reason for not
1049 moving this loop and the code found in captured_command_loop()
1050 into the command_loop() proper. The main thing holding back that
1051 change - SET_TOP_LEVEL() - has been eliminated. */
1054 catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL);
1056 /* No exit -- exit is through quit_command. */
1060 gdb_main (struct captured_main_args *args)
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);