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>
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 /* Return read only pointer to GDB_PROGRAM_NAME. */
103 get_gdb_program_name (void)
105 return gdb_program_name
;
108 static void print_gdb_help (struct ui_file
*);
110 /* Relocate a file or directory. PROGNAME is the name by which gdb
111 was invoked (i.e., argv[0]). INITIAL is the default value for the
112 file or directory. FLAG is true if the value is relocatable, false
113 otherwise. Returns a newly allocated string; this may return NULL
114 under the same conditions as make_relative_prefix. */
117 relocate_path (const char *progname
, const char *initial
, int flag
)
120 return make_relative_prefix (progname
, BINDIR
, initial
);
121 return xstrdup (initial
);
124 /* Like relocate_path, but specifically checks for a directory.
125 INITIAL is relocated according to the rules of relocate_path. If
126 the result is a directory, it is used; otherwise, INITIAL is used.
127 The chosen directory is then canonicalized using lrealpath. This
128 function always returns a newly-allocated string. */
131 relocate_gdb_directory (const char *initial
, int flag
)
135 dir
= relocate_path (gdb_program_name
, initial
, flag
);
140 if (*dir
== '\0' || stat (dir
, &s
) != 0 || !S_ISDIR (s
.st_mode
))
147 dir
= xstrdup (initial
);
149 /* Canonicalize the directory. */
152 char *canon_sysroot
= lrealpath (dir
);
164 /* Compute the locations of init files that GDB should source and
165 return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If
166 there is no system gdbinit (resp. home gdbinit and local gdbinit)
167 to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
168 LOCAL_GDBINIT) is set to NULL. */
170 get_init_files (const char **system_gdbinit
,
171 const char **home_gdbinit
,
172 const char **local_gdbinit
)
174 static const char *sysgdbinit
= NULL
;
175 static char *homeinit
= NULL
;
176 static const char *localinit
= NULL
;
177 static int initialized
= 0;
181 struct stat homebuf
, cwdbuf
, s
;
184 if (SYSTEM_GDBINIT
[0])
186 int datadir_len
= strlen (GDB_DATADIR
);
187 int sys_gdbinit_len
= strlen (SYSTEM_GDBINIT
);
188 char *relocated_sysgdbinit
;
190 /* If SYSTEM_GDBINIT lives in data-directory, and data-directory
191 has been provided, search for SYSTEM_GDBINIT there. */
192 if (gdb_datadir_provided
193 && datadir_len
< sys_gdbinit_len
194 && filename_ncmp (SYSTEM_GDBINIT
, GDB_DATADIR
, datadir_len
) == 0
195 && IS_DIR_SEPARATOR (SYSTEM_GDBINIT
[datadir_len
]))
197 /* Append the part of SYSTEM_GDBINIT that follows GDB_DATADIR
199 char *tmp_sys_gdbinit
= xstrdup (SYSTEM_GDBINIT
+ datadir_len
);
202 for (p
= tmp_sys_gdbinit
; IS_DIR_SEPARATOR (*p
); ++p
)
204 relocated_sysgdbinit
= concat (gdb_datadir
, SLASH_STRING
, p
,
206 xfree (tmp_sys_gdbinit
);
210 relocated_sysgdbinit
= relocate_path (gdb_program_name
,
212 SYSTEM_GDBINIT_RELOCATABLE
);
214 if (relocated_sysgdbinit
&& stat (relocated_sysgdbinit
, &s
) == 0)
215 sysgdbinit
= relocated_sysgdbinit
;
217 xfree (relocated_sysgdbinit
);
220 homedir
= getenv ("HOME");
222 /* If the .gdbinit file in the current directory is the same as
223 the $HOME/.gdbinit file, it should not be sourced. homebuf
224 and cwdbuf are used in that purpose. Make sure that the stats
225 are zero in case one of them fails (this guarantees that they
226 won't match if either exists). */
228 memset (&homebuf
, 0, sizeof (struct stat
));
229 memset (&cwdbuf
, 0, sizeof (struct stat
));
233 homeinit
= xstrprintf ("%s/%s", homedir
, gdbinit
);
234 if (stat (homeinit
, &homebuf
) != 0)
241 if (stat (gdbinit
, &cwdbuf
) == 0)
244 || memcmp ((char *) &homebuf
, (char *) &cwdbuf
,
245 sizeof (struct stat
)))
252 *system_gdbinit
= sysgdbinit
;
253 *home_gdbinit
= homeinit
;
254 *local_gdbinit
= localinit
;
257 /* Call command_loop. If it happens to return, pass that through as a
258 non-zero return status. */
261 captured_command_loop (void *data
)
263 /* Top-level execution commands can be run in the background from
265 interpreter_async
= 1;
267 current_interp_command_loop ();
268 /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
269 would clean things up (restoring the cleanup chain) to the state
270 they were just prior to the call. Technically, this means that
271 the do_cleanups() below is redundant. Unfortunately, many FUNCs
272 are not that well behaved. do_cleanups should either be replaced
273 with a do_cleanups call (to cover the problem) or an assertion
274 check to detect bad FUNCs code. */
275 do_cleanups (all_cleanups ());
276 /* If the command_loop returned, normally (rather than threw an
277 error) we try to quit. If the quit is aborted, catch_errors()
278 which called this catch the signal and restart the command
280 quit_command (NULL
, instream
== stdin
);
284 /* Arguments of --command option and its counterpart. */
285 typedef struct cmdarg
{
286 /* Type of this option. */
288 /* Option type -x. */
291 /* Option type -ex. */
294 /* Option type -ix. */
297 /* Option type -iex. */
301 /* Value of this option - filename or the GDB command itself. String memory
302 is not owned by this structure despite it is 'const'. */
306 /* Define type VEC (cmdarg_s). */
307 DEF_VEC_O (cmdarg_s
);
310 captured_main (void *data
)
312 struct captured_main_args
*context
= data
;
313 int argc
= context
->argc
;
314 char **argv
= context
->argv
;
315 static int quiet
= 0;
316 static int set_args
= 0;
317 static int inhibit_home_gdbinit
= 0;
319 /* Pointers to various arguments from command line. */
321 char *execarg
= NULL
;
323 char *corearg
= NULL
;
324 char *pid_or_core_arg
= NULL
;
328 /* These are static so that we can take their address in an
330 static int print_help
;
331 static int print_version
;
332 static int print_configuration
;
334 /* Pointers to all arguments of --command option. */
335 VEC (cmdarg_s
) *cmdarg_vec
= NULL
;
336 struct cmdarg
*cmdarg_p
;
338 /* Indices of all arguments of --directory option. */
340 /* Allocated size. */
342 /* Number of elements used. */
345 /* gdb init files. */
346 const char *system_gdbinit
;
347 const char *home_gdbinit
;
348 const char *local_gdbinit
;
352 struct objfile
*objfile
;
354 struct cleanup
*pre_stat_chain
;
357 /* Set this before calling make_command_stats_cleanup. */
358 lim_at_start
= (char *) sbrk (0);
361 pre_stat_chain
= make_command_stats_cleanup (0);
363 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
364 setlocale (LC_MESSAGES
, "");
366 #if defined (HAVE_SETLOCALE)
367 setlocale (LC_CTYPE
, "");
369 bindtextdomain (PACKAGE
, LOCALEDIR
);
370 textdomain (PACKAGE
);
375 make_cleanup (VEC_cleanup (cmdarg_s
), &cmdarg_vec
);
377 dirarg
= (char **) xmalloc (dirsize
* sizeof (*dirarg
));
381 saved_command_line
= (char *) xmalloc (saved_command_line_size
);
382 saved_command_line
[0] = '\0';
386 /* Ensure stderr is unbuffered. A Cygwin pty or pipe is implemented
387 as a Windows pipe, and Windows buffers on pipes. */
388 setvbuf (stderr
, NULL
, _IONBF
, BUFSIZ
);
391 gdb_stdout
= stdio_fileopen (stdout
);
392 gdb_stderr
= stderr_fileopen ();
394 gdb_stdlog
= gdb_stderr
; /* for moment */
395 gdb_stdtarg
= gdb_stderr
; /* for moment */
396 gdb_stdin
= stdio_fileopen (stdin
);
397 gdb_stdtargerr
= gdb_stderr
; /* for moment */
398 gdb_stdtargin
= gdb_stdin
; /* for moment */
401 /* On Windows, argv[0] is not necessarily set to absolute form when
402 GDB is found along PATH, without which relocation doesn't work. */
403 gdb_program_name
= windows_get_absolute_argv0 (argv
[0]);
405 gdb_program_name
= xstrdup (argv
[0]);
408 if (! getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
)))
409 /* Don't use *_filtered or warning() (which relies on
410 current_target) until after initialize_all_files(). */
411 fprintf_unfiltered (gdb_stderr
,
412 _("%s: warning: error finding "
413 "working directory: %s\n"),
414 argv
[0], safe_strerror (errno
));
416 current_directory
= gdb_dirbuf
;
418 /* Set the sysroot path. */
419 gdb_sysroot
= relocate_gdb_directory (TARGET_SYSTEM_ROOT
,
420 TARGET_SYSTEM_ROOT_RELOCATABLE
);
422 debug_file_directory
= relocate_gdb_directory (DEBUGDIR
,
423 DEBUGDIR_RELOCATABLE
);
425 gdb_datadir
= relocate_gdb_directory (GDB_DATADIR
,
426 GDB_DATADIR_RELOCATABLE
);
428 #ifdef WITH_PYTHON_PATH
430 /* For later use in helping Python find itself. */
431 char *tmp
= concat (WITH_PYTHON_PATH
, SLASH_STRING
, "lib", NULL
);
433 python_libdir
= relocate_gdb_directory (tmp
, PYTHON_PATH_RELOCATABLE
);
439 add_substitute_path_rule (RELOC_SRCDIR
,
440 make_relative_prefix (gdb_program_name
, BINDIR
,
444 /* There will always be an interpreter. Either the one passed into
445 this captured main, or one specified by the user at start up, or
446 the console. Initialize the interpreter to the one requested by
448 interpreter_p
= xstrdup (context
->interpreter_p
);
450 /* Parse arguments and options. */
453 /* When var field is 0, use flag field to record the equivalent
454 short option (or arbitrary numbers starting at 10 for those
455 with no equivalent). */
467 static struct option long_options
[] =
469 {"tui", no_argument
, 0, OPT_TUI
},
470 {"xdb", no_argument
, &xdb_commands
, 1},
471 {"dbx", no_argument
, &dbx_commands
, 1},
472 {"readnow", no_argument
, &readnow_symbol_files
, 1},
473 {"r", no_argument
, &readnow_symbol_files
, 1},
474 {"quiet", no_argument
, &quiet
, 1},
475 {"q", no_argument
, &quiet
, 1},
476 {"silent", no_argument
, &quiet
, 1},
477 {"nh", no_argument
, &inhibit_home_gdbinit
, 1},
478 {"nx", no_argument
, &inhibit_gdbinit
, 1},
479 {"n", no_argument
, &inhibit_gdbinit
, 1},
480 {"batch-silent", no_argument
, 0, 'B'},
481 {"batch", no_argument
, &batch_flag
, 1},
483 /* This is a synonym for "--annotate=1". --annotate is now
484 preferred, but keep this here for a long time because people
485 will be running emacses which use --fullname. */
486 {"fullname", no_argument
, 0, 'f'},
487 {"f", no_argument
, 0, 'f'},
489 {"annotate", required_argument
, 0, OPT_ANNOTATE
},
490 {"help", no_argument
, &print_help
, 1},
491 {"se", required_argument
, 0, OPT_SE
},
492 {"symbols", required_argument
, 0, 's'},
493 {"s", required_argument
, 0, 's'},
494 {"exec", required_argument
, 0, 'e'},
495 {"e", required_argument
, 0, 'e'},
496 {"core", required_argument
, 0, 'c'},
497 {"c", required_argument
, 0, 'c'},
498 {"pid", required_argument
, 0, 'p'},
499 {"p", required_argument
, 0, 'p'},
500 {"command", required_argument
, 0, 'x'},
501 {"eval-command", required_argument
, 0, 'X'},
502 {"version", no_argument
, &print_version
, 1},
503 {"configuration", no_argument
, &print_configuration
, 1},
504 {"x", required_argument
, 0, 'x'},
505 {"ex", required_argument
, 0, 'X'},
506 {"init-command", required_argument
, 0, OPT_IX
},
507 {"init-eval-command", required_argument
, 0, OPT_IEX
},
508 {"ix", required_argument
, 0, OPT_IX
},
509 {"iex", required_argument
, 0, OPT_IEX
},
511 {"tclcommand", required_argument
, 0, 'z'},
512 {"enable-external-editor", no_argument
, 0, 'y'},
513 {"editor-command", required_argument
, 0, 'w'},
515 {"ui", required_argument
, 0, 'i'},
516 {"interpreter", required_argument
, 0, 'i'},
517 {"i", required_argument
, 0, 'i'},
518 {"directory", required_argument
, 0, 'd'},
519 {"d", required_argument
, 0, 'd'},
520 {"data-directory", required_argument
, 0, 'D'},
521 {"cd", required_argument
, 0, OPT_CD
},
522 {"tty", required_argument
, 0, 't'},
523 {"baud", required_argument
, 0, 'b'},
524 {"b", required_argument
, 0, 'b'},
525 {"nw", no_argument
, NULL
, OPT_NOWINDOWS
},
526 {"nowindows", no_argument
, NULL
, OPT_NOWINDOWS
},
527 {"w", no_argument
, NULL
, OPT_WINDOWS
},
528 {"windows", no_argument
, NULL
, OPT_WINDOWS
},
529 {"statistics", no_argument
, 0, OPT_STATISTICS
},
530 {"write", no_argument
, &write_files
, 1},
531 {"args", no_argument
, &set_args
, 1},
532 {"l", required_argument
, 0, 'l'},
533 {"return-child-result", no_argument
, &return_child_result
, 1},
534 {0, no_argument
, 0, 0}
541 c
= getopt_long_only (argc
, argv
, "",
542 long_options
, &option_index
);
543 if (c
== EOF
|| set_args
)
546 /* Long option that takes an argument. */
547 if (c
== 0 && long_options
[option_index
].flag
== 0)
548 c
= long_options
[option_index
].val
;
553 /* Long option that just sets a flag. */
563 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
564 annotation_level
= atoi (optarg
);
567 /* Enable the display of both time and space usage. */
568 set_per_command_time (1);
569 set_per_command_space (1);
572 /* --tui is equivalent to -i=tui. */
574 xfree (interpreter_p
);
575 interpreter_p
= xstrdup (INTERP_TUI
);
577 fprintf_unfiltered (gdb_stderr
,
578 _("%s: TUI mode is not supported\n"),
584 /* FIXME: cagney/2003-03-01: Not sure if this option is
585 actually useful, and if it is, what it should do. */
587 /* --windows is equivalent to -i=insight. */
588 xfree (interpreter_p
);
589 interpreter_p
= xstrdup (INTERP_INSIGHT
);
594 /* -nw is equivalent to -i=console. */
595 xfree (interpreter_p
);
596 interpreter_p
= xstrdup (INTERP_CONSOLE
);
600 annotation_level
= 1;
601 /* We have probably been invoked from emacs. Disable
619 struct cmdarg cmdarg
= { CMDARG_FILE
, optarg
};
621 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
626 struct cmdarg cmdarg
= { CMDARG_COMMAND
, optarg
};
628 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
633 struct cmdarg cmdarg
= { CMDARG_INIT_FILE
, optarg
};
635 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
640 struct cmdarg cmdarg
= { CMDARG_INIT_COMMAND
, optarg
};
642 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
646 batch_flag
= batch_silent
= 1;
647 gdb_stdout
= ui_file_new();
651 gdb_datadir
= xstrdup (optarg
);
652 gdb_datadir_provided
= 1;
657 extern int gdbtk_test (char *);
659 if (!gdbtk_test (optarg
))
661 fprintf_unfiltered (gdb_stderr
,
662 _("%s: unable to load "
663 "tclcommand file \"%s\""),
670 /* Backwards compatibility only. */
674 /* Set the external editor commands when gdb is farming out files
675 to be edited by another program. */
676 extern char *external_editor_command
;
678 external_editor_command
= xstrdup (optarg
);
683 xfree (interpreter_p
);
684 interpreter_p
= xstrdup (optarg
);
687 dirarg
[ndir
++] = optarg
;
691 dirarg
= (char **) xrealloc ((char *) dirarg
,
692 dirsize
* sizeof (*dirarg
));
706 i
= strtol (optarg
, &p
, 0);
707 if (i
== 0 && p
== optarg
)
709 /* Don't use *_filtered or warning() (which relies on
710 current_target) until after initialize_all_files(). */
714 _("warning: could not set baud rate to `%s'.\n"), optarg
);
724 i
= strtol (optarg
, &p
, 0);
725 if (i
== 0 && p
== optarg
)
727 /* Don't use *_filtered or warning() (which relies on
728 current_target) until after initialize_all_files(). */
730 fprintf_unfiltered (gdb_stderr
,
731 _("warning: could not set "
732 "timeout limit to `%s'.\n"), optarg
);
739 fprintf_unfiltered (gdb_stderr
,
740 _("Use `%s --help' for a "
741 "complete list of options.\n"),
747 /* If --help or --version or --configuration, disable window
749 if (print_help
|| print_version
|| print_configuration
)
758 /* Initialize all files. Give the interpreter a chance to take
759 control of the console via the deprecated_init_ui_hook (). */
760 gdb_init (gdb_program_name
);
762 /* Now that gdb_init has created the initial inferior, we're in
763 position to set args for that inferior. */
766 /* The remaining options are the command-line options for the
767 inferior. The first one is the sym/exec file, and the rest
771 fprintf_unfiltered (gdb_stderr
,
772 _("%s: `--args' specified but "
773 "no program specified\n"),
777 symarg
= argv
[optind
];
778 execarg
= argv
[optind
];
780 set_inferior_args_vector (argc
- optind
, &argv
[optind
]);
784 /* OK, that's all the options. */
786 /* The first argument, if specified, is the name of the
790 symarg
= argv
[optind
];
791 execarg
= argv
[optind
];
795 /* If the user hasn't already specified a PID or the name of a
796 core file, then a second optional argument is allowed. If
797 present, this argument should be interpreted as either a
798 PID or a core file, whichever works. */
799 if (pidarg
== NULL
&& corearg
== NULL
&& optind
< argc
)
801 pid_or_core_arg
= argv
[optind
];
805 /* Any argument left on the command line is unexpected and
806 will be ignored. Inform the user. */
808 fprintf_unfiltered (gdb_stderr
,
809 _("Excess command line "
810 "arguments ignored. (%s%s)\n"),
812 (optind
== argc
- 1) ? "" : " ...");
815 /* Lookup gdbinit files. Note that the gdbinit file name may be
816 overriden during file initialization, so get_init_files should be
817 called after gdb_init. */
818 get_init_files (&system_gdbinit
, &home_gdbinit
, &local_gdbinit
);
820 /* Do these (and anything which might call wrap_here or *_filtered)
821 after initialize_all_files() but before the interpreter has been
822 installed. Otherwize the help/version messages will be eaten by
823 the interpreter's output handler. */
827 print_gdb_version (gdb_stdout
);
829 printf_filtered ("\n");
835 print_gdb_help (gdb_stdout
);
836 fputs_unfiltered ("\n", gdb_stdout
);
840 if (print_configuration
)
842 print_gdb_configuration (gdb_stdout
);
844 printf_filtered ("\n");
848 /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
849 GDB retain the old MI1 interpreter startup behavior. Output the
850 copyright message before the interpreter is installed. That way
851 it isn't encapsulated in MI output. */
852 if (!quiet
&& strcmp (interpreter_p
, INTERP_MI1
) == 0)
854 /* Print all the junk at the top, with trailing "..." if we are
855 about to read a symbol file (possibly slowly). */
856 print_gdb_version (gdb_stdout
);
858 printf_filtered ("..");
860 printf_filtered ("\n");
861 gdb_flush (gdb_stdout
); /* Force to screen during slow
865 /* Install the default UI. All the interpreters should have had a
866 look at things by now. Initialize the default interpreter. */
870 struct interp
*interp
= interp_lookup (interpreter_p
);
873 error (_("Interpreter `%s' unrecognized"), interpreter_p
);
875 if (!interp_set (interp
, 1))
877 fprintf_unfiltered (gdb_stderr
,
878 "Interpreter `%s' failed to initialize.\n",
884 /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
885 GDB retain the old MI1 interpreter startup behavior. Output the
886 copyright message after the interpreter is installed when it is
887 any sane interpreter. */
888 if (!quiet
&& !current_interp_named_p (INTERP_MI1
))
890 /* Print all the junk at the top, with trailing "..." if we are
891 about to read a symbol file (possibly slowly). */
892 print_gdb_version (gdb_stdout
);
894 printf_filtered ("..");
896 printf_filtered ("\n");
897 gdb_flush (gdb_stdout
); /* Force to screen during slow
901 /* Set off error and warning messages with a blank line. */
902 warning_pre_print
= _("\nwarning: ");
904 /* Read and execute the system-wide gdbinit file, if it exists.
905 This is done *before* all the command line arguments are
906 processed; it sets global parameters, which are independent of
907 what file you are debugging or what directory you are in. */
908 if (system_gdbinit
&& !inhibit_gdbinit
)
909 catch_command_errors_const (source_script
, system_gdbinit
,
912 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
913 *before* all the command line arguments are processed; it sets
914 global parameters, which are independent of what file you are
915 debugging or what directory you are in. */
917 if (home_gdbinit
&& !inhibit_gdbinit
&& !inhibit_home_gdbinit
)
918 catch_command_errors_const (source_script
,
919 home_gdbinit
, 0, RETURN_MASK_ALL
);
921 /* Process '-ix' and '-iex' options early. */
922 for (i
= 0; VEC_iterate (cmdarg_s
, cmdarg_vec
, i
, cmdarg_p
); i
++)
923 switch (cmdarg_p
->type
)
925 case CMDARG_INIT_FILE
:
926 catch_command_errors_const (source_script
, cmdarg_p
->string
,
927 !batch_flag
, RETURN_MASK_ALL
);
929 case CMDARG_INIT_COMMAND
:
930 catch_command_errors (execute_command
, cmdarg_p
->string
,
931 !batch_flag
, RETURN_MASK_ALL
);
935 /* Now perform all the actions indicated by the arguments. */
938 catch_command_errors (cd_command
, cdarg
, 0, RETURN_MASK_ALL
);
941 for (i
= 0; i
< ndir
; i
++)
942 catch_command_errors (directory_switch
, dirarg
[i
], 0, RETURN_MASK_ALL
);
945 /* Skip auto-loading section-specified scripts until we've sourced
946 local_gdbinit (which is often used to augment the source search
948 save_auto_load
= global_auto_load
;
949 global_auto_load
= 0;
953 && strcmp (execarg
, symarg
) == 0)
955 /* The exec file and the symbol-file are the same. If we can't
956 open it, better only print one error message.
957 catch_command_errors returns non-zero on success! */
958 if (catch_command_errors (exec_file_attach
, execarg
,
959 !batch_flag
, RETURN_MASK_ALL
))
960 catch_command_errors_const (symbol_file_add_main
, symarg
,
961 !batch_flag
, RETURN_MASK_ALL
);
966 catch_command_errors (exec_file_attach
, execarg
,
967 !batch_flag
, RETURN_MASK_ALL
);
969 catch_command_errors_const (symbol_file_add_main
, symarg
,
970 !batch_flag
, RETURN_MASK_ALL
);
973 if (corearg
&& pidarg
)
974 error (_("Can't attach to process and specify "
975 "a core file at the same time."));
978 catch_command_errors (core_file_command
, corearg
,
979 !batch_flag
, RETURN_MASK_ALL
);
980 else if (pidarg
!= NULL
)
981 catch_command_errors (attach_command
, pidarg
,
982 !batch_flag
, RETURN_MASK_ALL
);
983 else if (pid_or_core_arg
)
985 /* The user specified 'gdb program pid' or gdb program core'.
986 If pid_or_core_arg's first character is a digit, try attach
987 first and then corefile. Otherwise try just corefile. */
989 if (isdigit (pid_or_core_arg
[0]))
991 if (catch_command_errors (attach_command
, pid_or_core_arg
,
992 !batch_flag
, RETURN_MASK_ALL
) == 0)
993 catch_command_errors (core_file_command
, pid_or_core_arg
,
994 !batch_flag
, RETURN_MASK_ALL
);
996 else /* Can't be a pid, better be a corefile. */
997 catch_command_errors (core_file_command
, pid_or_core_arg
,
998 !batch_flag
, RETURN_MASK_ALL
);
1002 set_inferior_io_terminal (ttyarg
);
1004 /* Error messages should no longer be distinguished with extra output. */
1005 warning_pre_print
= _("warning: ");
1007 /* Read the .gdbinit file in the current directory, *if* it isn't
1008 the same as the $HOME/.gdbinit file (it should exist, also). */
1011 auto_load_local_gdbinit_pathname
= gdb_realpath (local_gdbinit
);
1013 if (!inhibit_gdbinit
&& auto_load_local_gdbinit
1014 && file_is_auto_load_safe (local_gdbinit
,
1015 _("auto-load: Loading .gdbinit "
1019 auto_load_local_gdbinit_loaded
= 1;
1021 catch_command_errors_const (source_script
, local_gdbinit
, 0,
1026 /* Now that all .gdbinit's have been read and all -d options have been
1027 processed, we can read any scripts mentioned in SYMARG.
1028 We wait until now because it is common to add to the source search
1029 path in local_gdbinit. */
1030 global_auto_load
= save_auto_load
;
1031 ALL_OBJFILES (objfile
)
1032 load_auto_scripts_for_objfile (objfile
);
1034 /* Process '-x' and '-ex' options. */
1035 for (i
= 0; VEC_iterate (cmdarg_s
, cmdarg_vec
, i
, cmdarg_p
); i
++)
1036 switch (cmdarg_p
->type
)
1039 catch_command_errors_const (source_script
, cmdarg_p
->string
,
1040 !batch_flag
, RETURN_MASK_ALL
);
1042 case CMDARG_COMMAND
:
1043 catch_command_errors (execute_command
, cmdarg_p
->string
,
1044 !batch_flag
, RETURN_MASK_ALL
);
1048 /* Read in the old history after all the command files have been
1054 /* We have hit the end of the batch file. */
1055 quit_force (NULL
, 0);
1058 /* Show time and/or space usage. */
1059 do_cleanups (pre_stat_chain
);
1061 /* NOTE: cagney/1999-11-07: There is probably no reason for not
1062 moving this loop and the code found in captured_command_loop()
1063 into the command_loop() proper. The main thing holding back that
1064 change - SET_TOP_LEVEL() - has been eliminated. */
1067 catch_errors (captured_command_loop
, 0, "", RETURN_MASK_ALL
);
1069 /* No exit -- exit is through quit_command. */
1073 gdb_main (struct captured_main_args
*args
)
1075 use_windows
= args
->use_windows
;
1076 catch_errors (captured_main
, args
, "", RETURN_MASK_ALL
);
1077 /* The only way to end up here is by an error (normal exit is
1078 handled by quit_force()), hence always return an error status. */
1083 /* Don't use *_filtered for printing help. We don't want to prompt
1084 for continue no matter how small the screen or how much we're going
1088 print_gdb_help (struct ui_file
*stream
)
1090 const char *system_gdbinit
;
1091 const char *home_gdbinit
;
1092 const char *local_gdbinit
;
1094 get_init_files (&system_gdbinit
, &home_gdbinit
, &local_gdbinit
);
1096 /* Note: The options in the list below are only approximately sorted
1097 in the alphabetical order, so as to group closely related options
1099 fputs_unfiltered (_("\
1100 This is the GNU debugger. Usage:\n\n\
1101 gdb [options] [executable-file [core-file or process-id]]\n\
1102 gdb [options] --args executable-file [inferior-arguments ...]\n\n\
1104 fputs_unfiltered (_("\
1105 Selection of debuggee and its files:\n\n\
1106 --args Arguments after executable-file are passed to inferior\n\
1107 --core=COREFILE Analyze the core dump COREFILE.\n\
1108 --exec=EXECFILE Use EXECFILE as the executable.\n\
1109 --pid=PID Attach to running process PID.\n\
1110 --directory=DIR Search for source files in DIR.\n\
1111 --se=FILE Use FILE as symbol file and executable file.\n\
1112 --symbols=SYMFILE Read symbols from SYMFILE.\n\
1113 --readnow Fully read symbol files on first access.\n\
1114 --write Set writing into executable and core files.\n\n\
1116 fputs_unfiltered (_("\
1117 Initial commands and command files:\n\n\
1118 --command=FILE, -x Execute GDB commands from FILE.\n\
1119 --init-command=FILE, -ix\n\
1120 Like -x but execute commands before loading inferior.\n\
1121 --eval-command=COMMAND, -ex\n\
1122 Execute a single GDB command.\n\
1123 May be used multiple times and in conjunction\n\
1125 --init-eval-command=COMMAND, -iex\n\
1126 Like -ex but before loading inferior.\n\
1127 --nh Do not read ~/.gdbinit.\n\
1128 --nx Do not read any .gdbinit files in any directory.\n\n\
1130 fputs_unfiltered (_("\
1131 Output and user interface control:\n\n\
1132 --fullname Output information used by emacs-GDB interface.\n\
1133 --interpreter=INTERP\n\
1134 Select a specific interpreter / user interface\n\
1135 --tty=TTY Use TTY for input/output by the program being debugged.\n\
1136 -w Use the GUI interface.\n\
1137 --nw Do not use the GUI interface.\n\
1140 fputs_unfiltered (_("\
1141 --tui Use a terminal user interface.\n\
1144 fputs_unfiltered (_("\
1145 --dbx DBX compatibility mode.\n\
1146 --xdb XDB compatibility mode.\n\
1147 --quiet Do not print version number on startup.\n\n\
1149 fputs_unfiltered (_("\
1150 Operating modes:\n\n\
1151 --batch Exit after processing options.\n\
1152 --batch-silent Like --batch, but suppress all gdb stdout output.\n\
1153 --return-child-result\n\
1154 GDB exit code will be the child's exit code.\n\
1155 --configuration Print details about GDB configuration and then exit.\n\
1156 --help Print this message and then exit.\n\
1157 --version Print version information and then exit.\n\n\
1158 Remote debugging options:\n\n\
1159 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
1160 -l TIMEOUT Set timeout in seconds for remote debugging.\n\n\
1162 --cd=DIR Change current directory to DIR.\n\
1164 fputs_unfiltered (_("\n\
1165 At startup, GDB reads the following init files and executes their commands:\n\
1168 fprintf_unfiltered (stream
, _("\
1169 * system-wide init file: %s\n\
1170 "), system_gdbinit
);
1172 fprintf_unfiltered (stream
, _("\
1173 * user-specific init file: %s\n\
1176 fprintf_unfiltered (stream
, _("\
1177 * local init file (see also 'set auto-load local-gdbinit'): ./%s\n\
1179 fputs_unfiltered (_("\n\
1180 For more information, type \"help\" from within GDB, or consult the\n\
1181 GDB manual (available as on-line info or a printed manual).\n\
1183 if (REPORT_BUGS_TO
[0] && stream
== gdb_stdout
)
1184 fprintf_unfiltered (stream
, _("\
1185 Report bugs to \"%s\".\n\
1186 "), REPORT_BUGS_TO
);