1 /* Top level stuff for GDB, the GNU debugger.
3 Copyright (C) 1986-2016 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/>. */
28 #include <sys/types.h>
31 #include "event-loop.h"
37 #include "cli/cli-cmds.h"
39 #include "auto-load.h"
42 #include "filenames.h"
43 #include "filestuff.h"
45 #include "event-top.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 dbx commands will be handled. */
56 /* System root path, used to find libraries etc. */
57 char *gdb_sysroot
= 0;
59 /* GDB datadir, used to store data files. */
60 char *gdb_datadir
= 0;
62 /* Non-zero if GDB_DATADIR was provided on the command line.
63 This doesn't track whether data-directory is set later from the
64 command line, but we don't reread system.gdbinit when that happens. */
65 static int gdb_datadir_provided
= 0;
67 /* If gdb was configured with --with-python=/path,
68 the possibly relocated path to python's lib directory. */
69 char *python_libdir
= 0;
71 struct ui_file
*gdb_stdout
;
72 struct ui_file
*gdb_stderr
;
73 struct ui_file
*gdb_stdlog
;
74 struct ui_file
*gdb_stdin
;
75 /* Target IO streams. */
76 struct ui_file
*gdb_stdtargin
;
77 struct ui_file
*gdb_stdtarg
;
78 struct ui_file
*gdb_stdtargerr
;
80 /* True if --batch or --batch-silent was seen. */
83 /* Support for the --batch-silent option. */
86 /* Support for --return-child-result option.
87 Set the default to -1 to return error in the case
88 that the program does not run or does not complete. */
89 int return_child_result
= 0;
90 int return_child_result_value
= -1;
93 /* GDB as it has been invoked from the command line (i.e. argv[0]). */
94 static char *gdb_program_name
;
96 /* Return read only pointer to GDB_PROGRAM_NAME. */
98 get_gdb_program_name (void)
100 return gdb_program_name
;
103 static void print_gdb_help (struct ui_file
*);
105 /* Set the data-directory parameter to NEW_DATADIR.
106 If NEW_DATADIR is not a directory then a warning is printed.
107 We don't signal an error for backward compatibility. */
110 set_gdb_data_directory (const char *new_datadir
)
114 if (stat (new_datadir
, &st
) < 0)
116 int save_errno
= errno
;
118 fprintf_unfiltered (gdb_stderr
, "Warning: ");
119 print_sys_errmsg (new_datadir
, save_errno
);
121 else if (!S_ISDIR (st
.st_mode
))
122 warning (_("%s is not a directory."), new_datadir
);
125 gdb_datadir
= gdb_realpath (new_datadir
);
127 /* gdb_realpath won't return an absolute path if the path doesn't exist,
128 but we still want to record an absolute path here. If the user entered
129 "../foo" and "../foo" doesn't exist then we'll record $(pwd)/../foo which
130 isn't canonical, but that's ok. */
131 if (!IS_ABSOLUTE_PATH (gdb_datadir
))
133 char *abs_datadir
= gdb_abspath (gdb_datadir
);
136 gdb_datadir
= abs_datadir
;
140 /* Relocate a file or directory. PROGNAME is the name by which gdb
141 was invoked (i.e., argv[0]). INITIAL is the default value for the
142 file or directory. FLAG is true if the value is relocatable, false
143 otherwise. Returns a newly allocated string; this may return NULL
144 under the same conditions as make_relative_prefix. */
147 relocate_path (const char *progname
, const char *initial
, int flag
)
150 return make_relative_prefix (progname
, BINDIR
, initial
);
151 return xstrdup (initial
);
154 /* Like relocate_path, but specifically checks for a directory.
155 INITIAL is relocated according to the rules of relocate_path. If
156 the result is a directory, it is used; otherwise, INITIAL is used.
157 The chosen directory is then canonicalized using lrealpath. This
158 function always returns a newly-allocated string. */
161 relocate_gdb_directory (const char *initial
, int flag
)
165 dir
= relocate_path (gdb_program_name
, initial
, flag
);
170 if (*dir
== '\0' || stat (dir
, &s
) != 0 || !S_ISDIR (s
.st_mode
))
177 dir
= xstrdup (initial
);
179 /* Canonicalize the directory. */
182 char *canon_sysroot
= lrealpath (dir
);
194 /* Compute the locations of init files that GDB should source and
195 return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If
196 there is no system gdbinit (resp. home gdbinit and local gdbinit)
197 to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
198 LOCAL_GDBINIT) is set to NULL. */
200 get_init_files (const char **system_gdbinit
,
201 const char **home_gdbinit
,
202 const char **local_gdbinit
)
204 static const char *sysgdbinit
= NULL
;
205 static char *homeinit
= NULL
;
206 static const char *localinit
= NULL
;
207 static int initialized
= 0;
211 struct stat homebuf
, cwdbuf
, s
;
214 if (SYSTEM_GDBINIT
[0])
216 int datadir_len
= strlen (GDB_DATADIR
);
217 int sys_gdbinit_len
= strlen (SYSTEM_GDBINIT
);
218 char *relocated_sysgdbinit
;
220 /* If SYSTEM_GDBINIT lives in data-directory, and data-directory
221 has been provided, search for SYSTEM_GDBINIT there. */
222 if (gdb_datadir_provided
223 && datadir_len
< sys_gdbinit_len
224 && filename_ncmp (SYSTEM_GDBINIT
, GDB_DATADIR
, datadir_len
) == 0
225 && IS_DIR_SEPARATOR (SYSTEM_GDBINIT
[datadir_len
]))
227 /* Append the part of SYSTEM_GDBINIT that follows GDB_DATADIR
229 char *tmp_sys_gdbinit
= xstrdup (SYSTEM_GDBINIT
+ datadir_len
);
232 for (p
= tmp_sys_gdbinit
; IS_DIR_SEPARATOR (*p
); ++p
)
234 relocated_sysgdbinit
= concat (gdb_datadir
, SLASH_STRING
, p
,
236 xfree (tmp_sys_gdbinit
);
240 relocated_sysgdbinit
= relocate_path (gdb_program_name
,
242 SYSTEM_GDBINIT_RELOCATABLE
);
244 if (relocated_sysgdbinit
&& stat (relocated_sysgdbinit
, &s
) == 0)
245 sysgdbinit
= relocated_sysgdbinit
;
247 xfree (relocated_sysgdbinit
);
250 homedir
= getenv ("HOME");
252 /* If the .gdbinit file in the current directory is the same as
253 the $HOME/.gdbinit file, it should not be sourced. homebuf
254 and cwdbuf are used in that purpose. Make sure that the stats
255 are zero in case one of them fails (this guarantees that they
256 won't match if either exists). */
258 memset (&homebuf
, 0, sizeof (struct stat
));
259 memset (&cwdbuf
, 0, sizeof (struct stat
));
263 homeinit
= xstrprintf ("%s/%s", homedir
, gdbinit
);
264 if (stat (homeinit
, &homebuf
) != 0)
271 if (stat (gdbinit
, &cwdbuf
) == 0)
274 || memcmp ((char *) &homebuf
, (char *) &cwdbuf
,
275 sizeof (struct stat
)))
282 *system_gdbinit
= sysgdbinit
;
283 *home_gdbinit
= homeinit
;
284 *local_gdbinit
= localinit
;
287 /* Try to set up an alternate signal stack for SIGSEGV handlers.
288 This allows us to handle SIGSEGV signals generated when the
289 normal process stack is exhausted. If this stack is not set
290 up (sigaltstack is unavailable or fails) and a SIGSEGV is
291 generated when the normal stack is exhausted then the program
292 will behave as though no SIGSEGV handler was installed. */
295 setup_alternate_signal_stack (void)
297 #ifdef HAVE_SIGALTSTACK
300 ss
.ss_sp
= xmalloc (SIGSTKSZ
);
301 ss
.ss_size
= SIGSTKSZ
;
304 sigaltstack(&ss
, NULL
);
308 /* Call command_loop. If it happens to return, pass that through as a
309 non-zero return status. */
312 captured_command_loop (void *data
)
314 /* Top-level execution commands can be run in the background from
316 interpreter_async
= 1;
318 current_interp_command_loop ();
319 /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
320 would clean things up (restoring the cleanup chain) to the state
321 they were just prior to the call. Technically, this means that
322 the do_cleanups() below is redundant. Unfortunately, many FUNCs
323 are not that well behaved. do_cleanups should either be replaced
324 with a do_cleanups call (to cover the problem) or an assertion
325 check to detect bad FUNCs code. */
326 do_cleanups (all_cleanups ());
327 /* If the command_loop returned, normally (rather than threw an
328 error) we try to quit. If the quit is aborted, catch_errors()
329 which called this catch the signal and restart the command
331 quit_command (NULL
, instream
== stdin
);
335 /* Handle command errors thrown from within
336 catch_command_errors/catch_command_errors_const. */
339 handle_command_errors (struct gdb_exception e
)
343 exception_print (gdb_stderr
, e
);
345 /* If any exception escaped to here, we better enable stdin.
346 Otherwise, any command that calls async_disable_stdin, and
347 then throws, will leave stdin inoperable. */
348 async_enable_stdin ();
354 /* Type of the command callback passed to catch_command_errors. */
356 typedef void (catch_command_errors_ftype
) (char *, int);
358 /* Wrap calls to commands run before the event loop is started. */
361 catch_command_errors (catch_command_errors_ftype
*command
,
362 char *arg
, int from_tty
)
366 int was_sync
= sync_execution
;
368 command (arg
, from_tty
);
370 maybe_wait_sync_command_done (was_sync
);
372 CATCH (e
, RETURN_MASK_ALL
)
374 return handle_command_errors (e
);
381 /* Type of the command callback passed to catch_command_errors_const. */
383 typedef void (catch_command_errors_const_ftype
) (const char *, int);
385 /* Like catch_command_errors, but works with const command and args. */
388 catch_command_errors_const (catch_command_errors_const_ftype
*command
,
389 const char *arg
, int from_tty
)
393 int was_sync
= sync_execution
;
395 command (arg
, from_tty
);
397 maybe_wait_sync_command_done (was_sync
);
399 CATCH (e
, RETURN_MASK_ALL
)
401 return handle_command_errors (e
);
408 /* Type of this option. */
411 /* Option type -x. */
414 /* Option type -ex. */
417 /* Option type -ix. */
420 /* Option type -iex. */
424 /* Arguments of --command option and its counterpart. */
425 typedef struct cmdarg
{
426 /* Type of this option. */
427 enum cmdarg_kind type
;
429 /* Value of this option - filename or the GDB command itself. String memory
430 is not owned by this structure despite it is 'const'. */
434 /* Define type VEC (cmdarg_s). */
435 DEF_VEC_O (cmdarg_s
);
438 captured_main (void *data
)
440 struct captured_main_args
*context
= (struct captured_main_args
*) data
;
441 int argc
= context
->argc
;
442 char **argv
= context
->argv
;
443 static int quiet
= 0;
444 static int set_args
= 0;
445 static int inhibit_home_gdbinit
= 0;
447 /* Pointers to various arguments from command line. */
449 char *execarg
= NULL
;
451 char *corearg
= NULL
;
452 char *pid_or_core_arg
= NULL
;
456 /* These are static so that we can take their address in an
458 static int print_help
;
459 static int print_version
;
460 static int print_configuration
;
462 /* Pointers to all arguments of --command option. */
463 VEC (cmdarg_s
) *cmdarg_vec
= NULL
;
464 struct cmdarg
*cmdarg_p
;
466 /* Indices of all arguments of --directory option. */
468 /* Allocated size. */
470 /* Number of elements used. */
473 /* gdb init files. */
474 const char *system_gdbinit
;
475 const char *home_gdbinit
;
476 const char *local_gdbinit
;
480 struct objfile
*objfile
;
482 struct cleanup
*pre_stat_chain
;
485 /* Set this before calling make_command_stats_cleanup. */
486 lim_at_start
= (char *) sbrk (0);
489 pre_stat_chain
= make_command_stats_cleanup (0);
491 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
492 setlocale (LC_MESSAGES
, "");
494 #if defined (HAVE_SETLOCALE)
495 setlocale (LC_CTYPE
, "");
497 bindtextdomain (PACKAGE
, LOCALEDIR
);
498 textdomain (PACKAGE
);
503 make_cleanup (VEC_cleanup (cmdarg_s
), &cmdarg_vec
);
505 dirarg
= (char **) xmalloc (dirsize
* sizeof (*dirarg
));
508 saved_command_line
= (char *) xstrdup ("");
512 /* Ensure stderr is unbuffered. A Cygwin pty or pipe is implemented
513 as a Windows pipe, and Windows buffers on pipes. */
514 setvbuf (stderr
, NULL
, _IONBF
, BUFSIZ
);
517 gdb_stdout
= stdio_fileopen (stdout
);
518 gdb_stderr
= stderr_fileopen ();
520 gdb_stdlog
= gdb_stderr
; /* for moment */
521 gdb_stdtarg
= gdb_stderr
; /* for moment */
522 gdb_stdin
= stdio_fileopen (stdin
);
523 gdb_stdtargerr
= gdb_stderr
; /* for moment */
524 gdb_stdtargin
= gdb_stdin
; /* for moment */
527 /* On Windows, argv[0] is not necessarily set to absolute form when
528 GDB is found along PATH, without which relocation doesn't work. */
529 gdb_program_name
= windows_get_absolute_argv0 (argv
[0]);
531 gdb_program_name
= xstrdup (argv
[0]);
534 /* Prefix warning messages with the command name. */
535 warning_pre_print
= xstrprintf ("%s: warning: ", gdb_program_name
);
537 if (! getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
)))
538 perror_warning_with_name (_("error finding working directory"));
540 current_directory
= gdb_dirbuf
;
542 /* Set the sysroot path. */
543 gdb_sysroot
= relocate_gdb_directory (TARGET_SYSTEM_ROOT
,
544 TARGET_SYSTEM_ROOT_RELOCATABLE
);
546 if (gdb_sysroot
== NULL
|| *gdb_sysroot
== '\0')
549 gdb_sysroot
= xstrdup (TARGET_SYSROOT_PREFIX
);
552 debug_file_directory
= relocate_gdb_directory (DEBUGDIR
,
553 DEBUGDIR_RELOCATABLE
);
555 gdb_datadir
= relocate_gdb_directory (GDB_DATADIR
,
556 GDB_DATADIR_RELOCATABLE
);
558 #ifdef WITH_PYTHON_PATH
560 /* For later use in helping Python find itself. */
561 char *tmp
= concat (WITH_PYTHON_PATH
, SLASH_STRING
, "lib", NULL
);
563 python_libdir
= relocate_gdb_directory (tmp
, PYTHON_PATH_RELOCATABLE
);
569 add_substitute_path_rule (RELOC_SRCDIR
,
570 make_relative_prefix (gdb_program_name
, BINDIR
,
574 /* There will always be an interpreter. Either the one passed into
575 this captured main, or one specified by the user at start up, or
576 the console. Initialize the interpreter to the one requested by
578 interpreter_p
= xstrdup (context
->interpreter_p
);
580 /* Parse arguments and options. */
583 /* When var field is 0, use flag field to record the equivalent
584 short option (or arbitrary numbers starting at 10 for those
585 with no equivalent). */
597 static struct option long_options
[] =
599 {"tui", no_argument
, 0, OPT_TUI
},
600 {"dbx", no_argument
, &dbx_commands
, 1},
601 {"readnow", no_argument
, &readnow_symbol_files
, 1},
602 {"r", no_argument
, &readnow_symbol_files
, 1},
603 {"quiet", no_argument
, &quiet
, 1},
604 {"q", no_argument
, &quiet
, 1},
605 {"silent", no_argument
, &quiet
, 1},
606 {"nh", no_argument
, &inhibit_home_gdbinit
, 1},
607 {"nx", no_argument
, &inhibit_gdbinit
, 1},
608 {"n", no_argument
, &inhibit_gdbinit
, 1},
609 {"batch-silent", no_argument
, 0, 'B'},
610 {"batch", no_argument
, &batch_flag
, 1},
612 /* This is a synonym for "--annotate=1". --annotate is now
613 preferred, but keep this here for a long time because people
614 will be running emacses which use --fullname. */
615 {"fullname", no_argument
, 0, 'f'},
616 {"f", no_argument
, 0, 'f'},
618 {"annotate", required_argument
, 0, OPT_ANNOTATE
},
619 {"help", no_argument
, &print_help
, 1},
620 {"se", required_argument
, 0, OPT_SE
},
621 {"symbols", required_argument
, 0, 's'},
622 {"s", required_argument
, 0, 's'},
623 {"exec", required_argument
, 0, 'e'},
624 {"e", required_argument
, 0, 'e'},
625 {"core", required_argument
, 0, 'c'},
626 {"c", required_argument
, 0, 'c'},
627 {"pid", required_argument
, 0, 'p'},
628 {"p", required_argument
, 0, 'p'},
629 {"command", required_argument
, 0, 'x'},
630 {"eval-command", required_argument
, 0, 'X'},
631 {"version", no_argument
, &print_version
, 1},
632 {"configuration", no_argument
, &print_configuration
, 1},
633 {"x", required_argument
, 0, 'x'},
634 {"ex", required_argument
, 0, 'X'},
635 {"init-command", required_argument
, 0, OPT_IX
},
636 {"init-eval-command", required_argument
, 0, OPT_IEX
},
637 {"ix", required_argument
, 0, OPT_IX
},
638 {"iex", required_argument
, 0, OPT_IEX
},
640 {"tclcommand", required_argument
, 0, 'z'},
641 {"enable-external-editor", no_argument
, 0, 'y'},
642 {"editor-command", required_argument
, 0, 'w'},
644 {"ui", required_argument
, 0, 'i'},
645 {"interpreter", required_argument
, 0, 'i'},
646 {"i", required_argument
, 0, 'i'},
647 {"directory", required_argument
, 0, 'd'},
648 {"d", required_argument
, 0, 'd'},
649 {"data-directory", required_argument
, 0, 'D'},
650 {"D", required_argument
, 0, 'D'},
651 {"cd", required_argument
, 0, OPT_CD
},
652 {"tty", required_argument
, 0, 't'},
653 {"baud", required_argument
, 0, 'b'},
654 {"b", required_argument
, 0, 'b'},
655 {"nw", no_argument
, NULL
, OPT_NOWINDOWS
},
656 {"nowindows", no_argument
, NULL
, OPT_NOWINDOWS
},
657 {"w", no_argument
, NULL
, OPT_WINDOWS
},
658 {"windows", no_argument
, NULL
, OPT_WINDOWS
},
659 {"statistics", no_argument
, 0, OPT_STATISTICS
},
660 {"write", no_argument
, &write_files
, 1},
661 {"args", no_argument
, &set_args
, 1},
662 {"l", required_argument
, 0, 'l'},
663 {"return-child-result", no_argument
, &return_child_result
, 1},
664 {0, no_argument
, 0, 0}
671 c
= getopt_long_only (argc
, argv
, "",
672 long_options
, &option_index
);
673 if (c
== EOF
|| set_args
)
676 /* Long option that takes an argument. */
677 if (c
== 0 && long_options
[option_index
].flag
== 0)
678 c
= long_options
[option_index
].val
;
683 /* Long option that just sets a flag. */
693 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
694 annotation_level
= atoi (optarg
);
697 /* Enable the display of both time and space usage. */
698 set_per_command_time (1);
699 set_per_command_space (1);
702 /* --tui is equivalent to -i=tui. */
704 xfree (interpreter_p
);
705 interpreter_p
= xstrdup (INTERP_TUI
);
707 error (_("%s: TUI mode is not supported"), gdb_program_name
);
711 /* FIXME: cagney/2003-03-01: Not sure if this option is
712 actually useful, and if it is, what it should do. */
714 /* --windows is equivalent to -i=insight. */
715 xfree (interpreter_p
);
716 interpreter_p
= xstrdup (INTERP_INSIGHT
);
720 /* -nw is equivalent to -i=console. */
721 xfree (interpreter_p
);
722 interpreter_p
= xstrdup (INTERP_CONSOLE
);
725 annotation_level
= 1;
741 struct cmdarg cmdarg
= { CMDARG_FILE
, optarg
};
743 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
748 struct cmdarg cmdarg
= { CMDARG_COMMAND
, optarg
};
750 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
755 struct cmdarg cmdarg
= { CMDARG_INIT_FILE
, optarg
};
757 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
762 struct cmdarg cmdarg
= { CMDARG_INIT_COMMAND
, optarg
};
764 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
768 batch_flag
= batch_silent
= 1;
769 gdb_stdout
= ui_file_new();
772 if (optarg
[0] == '\0')
773 error (_("%s: empty path for `--data-directory'"),
775 set_gdb_data_directory (optarg
);
776 gdb_datadir_provided
= 1;
781 extern int gdbtk_test (char *);
783 if (!gdbtk_test (optarg
))
784 error (_("%s: unable to load tclcommand file \"%s\""),
785 gdb_program_name
, optarg
);
789 /* Backwards compatibility only. */
793 /* Set the external editor commands when gdb is farming out files
794 to be edited by another program. */
795 extern char *external_editor_command
;
797 external_editor_command
= xstrdup (optarg
);
802 xfree (interpreter_p
);
803 interpreter_p
= xstrdup (optarg
);
806 dirarg
[ndir
++] = optarg
;
810 dirarg
= (char **) xrealloc ((char *) dirarg
,
811 dirsize
* sizeof (*dirarg
));
825 i
= strtol (optarg
, &p
, 0);
826 if (i
== 0 && p
== optarg
)
827 warning (_("could not set baud rate to `%s'."),
838 i
= strtol (optarg
, &p
, 0);
839 if (i
== 0 && p
== optarg
)
840 warning (_("could not set timeout limit to `%s'."),
848 error (_("Use `%s --help' for a complete list of options."),
857 /* Try to set up an alternate signal stack for SIGSEGV handlers. */
858 setup_alternate_signal_stack ();
860 /* Initialize all files. */
861 gdb_init (gdb_program_name
);
863 /* Now that gdb_init has created the initial inferior, we're in
864 position to set args for that inferior. */
867 /* The remaining options are the command-line options for the
868 inferior. The first one is the sym/exec file, and the rest
871 error (_("%s: `--args' specified but no program specified"),
874 symarg
= argv
[optind
];
875 execarg
= argv
[optind
];
877 set_inferior_args_vector (argc
- optind
, &argv
[optind
]);
881 /* OK, that's all the options. */
883 /* The first argument, if specified, is the name of the
887 symarg
= argv
[optind
];
888 execarg
= argv
[optind
];
892 /* If the user hasn't already specified a PID or the name of a
893 core file, then a second optional argument is allowed. If
894 present, this argument should be interpreted as either a
895 PID or a core file, whichever works. */
896 if (pidarg
== NULL
&& corearg
== NULL
&& optind
< argc
)
898 pid_or_core_arg
= argv
[optind
];
902 /* Any argument left on the command line is unexpected and
903 will be ignored. Inform the user. */
905 fprintf_unfiltered (gdb_stderr
,
906 _("Excess command line "
907 "arguments ignored. (%s%s)\n"),
909 (optind
== argc
- 1) ? "" : " ...");
912 /* Lookup gdbinit files. Note that the gdbinit file name may be
913 overriden during file initialization, so get_init_files should be
914 called after gdb_init. */
915 get_init_files (&system_gdbinit
, &home_gdbinit
, &local_gdbinit
);
917 /* Do these (and anything which might call wrap_here or *_filtered)
918 after initialize_all_files() but before the interpreter has been
919 installed. Otherwize the help/version messages will be eaten by
920 the interpreter's output handler. */
924 print_gdb_version (gdb_stdout
);
926 printf_filtered ("\n");
932 print_gdb_help (gdb_stdout
);
933 fputs_unfiltered ("\n", gdb_stdout
);
937 if (print_configuration
)
939 print_gdb_configuration (gdb_stdout
);
941 printf_filtered ("\n");
945 /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
946 GDB retain the old MI1 interpreter startup behavior. Output the
947 copyright message before the interpreter is installed. That way
948 it isn't encapsulated in MI output. */
949 if (!quiet
&& strcmp (interpreter_p
, INTERP_MI1
) == 0)
951 /* Print all the junk at the top, with trailing "..." if we are
952 about to read a symbol file (possibly slowly). */
953 print_gdb_version (gdb_stdout
);
955 printf_filtered ("..");
957 printf_filtered ("\n");
958 gdb_flush (gdb_stdout
); /* Force to screen during slow
962 /* Install the default UI. All the interpreters should have had a
963 look at things by now. Initialize the default interpreter. */
967 struct interp
*interp
= interp_lookup (interpreter_p
);
970 error (_("Interpreter `%s' unrecognized"), interpreter_p
);
972 if (!interp_set (interp
, 1))
973 error (_("Interpreter `%s' failed to initialize."), interpreter_p
);
976 /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
977 GDB retain the old MI1 interpreter startup behavior. Output the
978 copyright message after the interpreter is installed when it is
979 any sane interpreter. */
980 if (!quiet
&& !current_interp_named_p (INTERP_MI1
))
982 /* Print all the junk at the top, with trailing "..." if we are
983 about to read a symbol file (possibly slowly). */
984 print_gdb_version (gdb_stdout
);
986 printf_filtered ("..");
988 printf_filtered ("\n");
989 gdb_flush (gdb_stdout
); /* Force to screen during slow
993 /* Set off error and warning messages with a blank line. */
994 xfree (warning_pre_print
);
995 warning_pre_print
= _("\nwarning: ");
997 /* Read and execute the system-wide gdbinit file, if it exists.
998 This is done *before* all the command line arguments are
999 processed; it sets global parameters, which are independent of
1000 what file you are debugging or what directory you are in. */
1001 if (system_gdbinit
&& !inhibit_gdbinit
)
1002 catch_command_errors_const (source_script
, system_gdbinit
, 0);
1004 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
1005 *before* all the command line arguments are processed; it sets
1006 global parameters, which are independent of what file you are
1007 debugging or what directory you are in. */
1009 if (home_gdbinit
&& !inhibit_gdbinit
&& !inhibit_home_gdbinit
)
1010 catch_command_errors_const (source_script
, home_gdbinit
, 0);
1012 /* Process '-ix' and '-iex' options early. */
1013 for (i
= 0; VEC_iterate (cmdarg_s
, cmdarg_vec
, i
, cmdarg_p
); i
++)
1014 switch (cmdarg_p
->type
)
1016 case CMDARG_INIT_FILE
:
1017 catch_command_errors_const (source_script
, cmdarg_p
->string
,
1020 case CMDARG_INIT_COMMAND
:
1021 catch_command_errors (execute_command
, cmdarg_p
->string
,
1026 /* Now perform all the actions indicated by the arguments. */
1029 catch_command_errors (cd_command
, cdarg
, 0);
1032 for (i
= 0; i
< ndir
; i
++)
1033 catch_command_errors (directory_switch
, dirarg
[i
], 0);
1036 /* Skip auto-loading section-specified scripts until we've sourced
1037 local_gdbinit (which is often used to augment the source search
1039 save_auto_load
= global_auto_load
;
1040 global_auto_load
= 0;
1044 && strcmp (execarg
, symarg
) == 0)
1046 /* The exec file and the symbol-file are the same. If we can't
1047 open it, better only print one error message.
1048 catch_command_errors returns non-zero on success! */
1049 if (catch_command_errors_const (exec_file_attach
, execarg
,
1051 catch_command_errors_const (symbol_file_add_main
, symarg
,
1056 if (execarg
!= NULL
)
1057 catch_command_errors_const (exec_file_attach
, execarg
,
1060 catch_command_errors_const (symbol_file_add_main
, symarg
,
1064 if (corearg
&& pidarg
)
1065 error (_("Can't attach to process and specify "
1066 "a core file at the same time."));
1068 if (corearg
!= NULL
)
1069 catch_command_errors (core_file_command
, corearg
, !batch_flag
);
1070 else if (pidarg
!= NULL
)
1071 catch_command_errors (attach_command
, pidarg
, !batch_flag
);
1072 else if (pid_or_core_arg
)
1074 /* The user specified 'gdb program pid' or gdb program core'.
1075 If pid_or_core_arg's first character is a digit, try attach
1076 first and then corefile. Otherwise try just corefile. */
1078 if (isdigit (pid_or_core_arg
[0]))
1080 if (catch_command_errors (attach_command
, pid_or_core_arg
,
1082 catch_command_errors (core_file_command
, pid_or_core_arg
,
1085 else /* Can't be a pid, better be a corefile. */
1086 catch_command_errors (core_file_command
, pid_or_core_arg
,
1091 set_inferior_io_terminal (ttyarg
);
1093 /* Error messages should no longer be distinguished with extra output. */
1094 warning_pre_print
= _("warning: ");
1096 /* Read the .gdbinit file in the current directory, *if* it isn't
1097 the same as the $HOME/.gdbinit file (it should exist, also). */
1100 auto_load_local_gdbinit_pathname
= gdb_realpath (local_gdbinit
);
1102 if (!inhibit_gdbinit
&& auto_load_local_gdbinit
1103 && file_is_auto_load_safe (local_gdbinit
,
1104 _("auto-load: Loading .gdbinit "
1108 auto_load_local_gdbinit_loaded
= 1;
1110 catch_command_errors_const (source_script
, local_gdbinit
, 0);
1114 /* Now that all .gdbinit's have been read and all -d options have been
1115 processed, we can read any scripts mentioned in SYMARG.
1116 We wait until now because it is common to add to the source search
1117 path in local_gdbinit. */
1118 global_auto_load
= save_auto_load
;
1119 ALL_OBJFILES (objfile
)
1120 load_auto_scripts_for_objfile (objfile
);
1122 /* Process '-x' and '-ex' options. */
1123 for (i
= 0; VEC_iterate (cmdarg_s
, cmdarg_vec
, i
, cmdarg_p
); i
++)
1124 switch (cmdarg_p
->type
)
1127 catch_command_errors_const (source_script
, cmdarg_p
->string
,
1130 case CMDARG_COMMAND
:
1131 catch_command_errors (execute_command
, cmdarg_p
->string
,
1136 /* Read in the old history after all the command files have been
1142 /* We have hit the end of the batch file. */
1143 quit_force (NULL
, 0);
1146 /* Show time and/or space usage. */
1147 do_cleanups (pre_stat_chain
);
1149 /* NOTE: cagney/1999-11-07: There is probably no reason for not
1150 moving this loop and the code found in captured_command_loop()
1151 into the command_loop() proper. The main thing holding back that
1152 change - SET_TOP_LEVEL() - has been eliminated. */
1155 catch_errors (captured_command_loop
, 0, "", RETURN_MASK_ALL
);
1157 /* No exit -- exit is through quit_command. */
1161 gdb_main (struct captured_main_args
*args
)
1163 catch_errors (captured_main
, args
, "", RETURN_MASK_ALL
);
1164 /* The only way to end up here is by an error (normal exit is
1165 handled by quit_force()), hence always return an error status. */
1170 /* Don't use *_filtered for printing help. We don't want to prompt
1171 for continue no matter how small the screen or how much we're going
1175 print_gdb_help (struct ui_file
*stream
)
1177 const char *system_gdbinit
;
1178 const char *home_gdbinit
;
1179 const char *local_gdbinit
;
1181 get_init_files (&system_gdbinit
, &home_gdbinit
, &local_gdbinit
);
1183 /* Note: The options in the list below are only approximately sorted
1184 in the alphabetical order, so as to group closely related options
1186 fputs_unfiltered (_("\
1187 This is the GNU debugger. Usage:\n\n\
1188 gdb [options] [executable-file [core-file or process-id]]\n\
1189 gdb [options] --args executable-file [inferior-arguments ...]\n\n\
1191 fputs_unfiltered (_("\
1192 Selection of debuggee and its files:\n\n\
1193 --args Arguments after executable-file are passed to inferior\n\
1194 --core=COREFILE Analyze the core dump COREFILE.\n\
1195 --exec=EXECFILE Use EXECFILE as the executable.\n\
1196 --pid=PID Attach to running process PID.\n\
1197 --directory=DIR Search for source files in DIR.\n\
1198 --se=FILE Use FILE as symbol file and executable file.\n\
1199 --symbols=SYMFILE Read symbols from SYMFILE.\n\
1200 --readnow Fully read symbol files on first access.\n\
1201 --write Set writing into executable and core files.\n\n\
1203 fputs_unfiltered (_("\
1204 Initial commands and command files:\n\n\
1205 --command=FILE, -x Execute GDB commands from FILE.\n\
1206 --init-command=FILE, -ix\n\
1207 Like -x but execute commands before loading inferior.\n\
1208 --eval-command=COMMAND, -ex\n\
1209 Execute a single GDB command.\n\
1210 May be used multiple times and in conjunction\n\
1212 --init-eval-command=COMMAND, -iex\n\
1213 Like -ex but before loading inferior.\n\
1214 --nh Do not read ~/.gdbinit.\n\
1215 --nx Do not read any .gdbinit files in any directory.\n\n\
1217 fputs_unfiltered (_("\
1218 Output and user interface control:\n\n\
1219 --fullname Output information used by emacs-GDB interface.\n\
1220 --interpreter=INTERP\n\
1221 Select a specific interpreter / user interface\n\
1222 --tty=TTY Use TTY for input/output by the program being debugged.\n\
1223 -w Use the GUI interface.\n\
1224 --nw Do not use the GUI interface.\n\
1227 fputs_unfiltered (_("\
1228 --tui Use a terminal user interface.\n\
1231 fputs_unfiltered (_("\
1232 --dbx DBX compatibility mode.\n\
1233 -q, --quiet, --silent\n\
1234 Do not print version number on startup.\n\n\
1236 fputs_unfiltered (_("\
1237 Operating modes:\n\n\
1238 --batch Exit after processing options.\n\
1239 --batch-silent Like --batch, but suppress all gdb stdout output.\n\
1240 --return-child-result\n\
1241 GDB exit code will be the child's exit code.\n\
1242 --configuration Print details about GDB configuration and then exit.\n\
1243 --help Print this message and then exit.\n\
1244 --version Print version information and then exit.\n\n\
1245 Remote debugging options:\n\n\
1246 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
1247 -l TIMEOUT Set timeout in seconds for remote debugging.\n\n\
1249 --cd=DIR Change current directory to DIR.\n\
1250 --data-directory=DIR, -D\n\
1251 Set GDB's data-directory to DIR.\n\
1253 fputs_unfiltered (_("\n\
1254 At startup, GDB reads the following init files and executes their commands:\n\
1257 fprintf_unfiltered (stream
, _("\
1258 * system-wide init file: %s\n\
1259 "), system_gdbinit
);
1261 fprintf_unfiltered (stream
, _("\
1262 * user-specific init file: %s\n\
1265 fprintf_unfiltered (stream
, _("\
1266 * local init file (see also 'set auto-load local-gdbinit'): ./%s\n\
1268 fputs_unfiltered (_("\n\
1269 For more information, type \"help\" from within GDB, or consult the\n\
1270 GDB manual (available as on-line info or a printed manual).\n\
1272 if (REPORT_BUGS_TO
[0] && stream
== gdb_stdout
)
1273 fprintf_unfiltered (stream
, _("\
1274 Report bugs to \"%s\".\n\
1275 "), REPORT_BUGS_TO
);