1 /* Top level stuff for GDB, the GNU debugger.
2 Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999
3 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 2 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, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
24 #include "call-cmds.h"
29 #include "breakpoint.h"
31 #include "expression.h"
34 #include "terminal.h" /* For job_control. */
39 /* readline include files */
40 #include <readline/readline.h>
41 #include <readline/history.h>
43 /* readline defines this. */
46 #include <sys/types.h>
49 #include "event-top.h"
50 #include "gdb_string.h"
54 /* Prototypes for local functions */
56 static void dont_repeat_command
PARAMS ((char *, int));
58 static void source_cleanup_lines
PARAMS ((PTR
));
60 static void user_defined_command
PARAMS ((char *, int));
62 static void init_signals
PARAMS ((void));
65 static void stop_sig
PARAMS ((int));
68 static char *line_completion_function
PARAMS ((char *, int, char *, int));
70 static char *readline_line_completion_function
PARAMS ((char *, int));
72 /* NOTE 1999-04-29: this function will be static again, after we make the
73 event loop be the default command loop for gdb, and we merge
74 event-top.c into this file, top.c */
75 /* static */ void command_loop_marker
PARAMS ((int));
77 static void while_command
PARAMS ((char *, int));
79 static void if_command
PARAMS ((char *, int));
81 static struct command_line
*
82 build_command_line
PARAMS ((enum command_control_type
, char *));
84 static struct command_line
*
85 get_command_line
PARAMS ((enum command_control_type
, char *));
87 static void realloc_body_list
PARAMS ((struct command_line
*, int));
89 static enum misc_command_type read_next_line
PARAMS ((struct command_line
**));
91 static enum command_control_type
92 recurse_read_control_structure
PARAMS ((struct command_line
*));
94 static struct cleanup
*setup_user_args
PARAMS ((char *));
96 static char *locate_arg
PARAMS ((char *));
98 static char *insert_args
PARAMS ((char *));
100 static void arg_cleanup
PARAMS ((void));
102 static void init_main
PARAMS ((void));
104 static void init_cmd_lists
PARAMS ((void));
106 static void float_handler
PARAMS ((int));
108 static void init_signals
PARAMS ((void));
110 static void set_verbose
PARAMS ((char *, int, struct cmd_list_element
*));
112 static void show_history
PARAMS ((char *, int));
114 static void set_history
PARAMS ((char *, int));
116 static void set_history_size_command
PARAMS ((char *, int,
117 struct cmd_list_element
*));
119 static void show_commands
PARAMS ((char *, int));
121 static void echo_command
PARAMS ((char *, int));
123 static void pwd_command
PARAMS ((char *, int));
125 static void show_version
PARAMS ((char *, int));
127 static void document_command
PARAMS ((char *, int));
129 static void define_command
PARAMS ((char *, int));
131 static void validate_comname
PARAMS ((char *));
133 static void help_command
PARAMS ((char *, int));
135 static void show_command
PARAMS ((char *, int));
137 static void info_command
PARAMS ((char *, int));
139 static void complete_command
PARAMS ((char *, int));
141 static void do_nothing
PARAMS ((int));
144 /* NOTE 1999-04-29: This function will be static again, once we modify
145 gdb to use the event loop as the default command loop and we merge
146 event-top.c into this file, top.c */
147 /* static */ int quit_cover
PARAMS ((PTR
));
149 static void disconnect
PARAMS ((int));
152 static void source_cleanup
PARAMS ((FILE *));
154 /* Default command line prompt. This is overriden in some configs. */
156 #ifndef DEFAULT_PROMPT
157 #define DEFAULT_PROMPT "(gdb) "
160 /* Initialization file name for gdb. This is overridden in some configs. */
162 #ifndef GDBINIT_FILENAME
163 #define GDBINIT_FILENAME ".gdbinit"
165 char gdbinit
[] = GDBINIT_FILENAME
;
167 int inhibit_gdbinit
= 0;
169 /* If nonzero, and GDB has been configured to be able to use windows,
170 attempt to open them upon startup. */
174 extern char lang_frame_mismatch_warn
[]; /* language.c */
176 /* Flag for whether we want all the "from_tty" gubbish printed. */
178 int caution
= 1; /* Default is yes, sigh. */
180 /* Define all cmd_list_elements. */
182 /* Chain containing all defined commands. */
184 struct cmd_list_element
*cmdlist
;
186 /* Chain containing all defined info subcommands. */
188 struct cmd_list_element
*infolist
;
190 /* Chain containing all defined enable subcommands. */
192 struct cmd_list_element
*enablelist
;
194 /* Chain containing all defined disable subcommands. */
196 struct cmd_list_element
*disablelist
;
198 /* Chain containing all defined toggle subcommands. */
200 struct cmd_list_element
*togglelist
;
202 /* Chain containing all defined stop subcommands. */
204 struct cmd_list_element
*stoplist
;
206 /* Chain containing all defined delete subcommands. */
208 struct cmd_list_element
*deletelist
;
210 /* Chain containing all defined "enable breakpoint" subcommands. */
212 struct cmd_list_element
*enablebreaklist
;
214 /* Chain containing all defined set subcommands */
216 struct cmd_list_element
*setlist
;
218 /* Chain containing all defined unset subcommands */
220 struct cmd_list_element
*unsetlist
;
222 /* Chain containing all defined show subcommands. */
224 struct cmd_list_element
*showlist
;
226 /* Chain containing all defined \"set history\". */
228 struct cmd_list_element
*sethistlist
;
230 /* Chain containing all defined \"show history\". */
232 struct cmd_list_element
*showhistlist
;
234 /* Chain containing all defined \"unset history\". */
236 struct cmd_list_element
*unsethistlist
;
238 /* Chain containing all defined maintenance subcommands. */
240 struct cmd_list_element
*maintenancelist
;
242 /* Chain containing all defined "maintenance info" subcommands. */
244 struct cmd_list_element
*maintenanceinfolist
;
246 /* Chain containing all defined "maintenance print" subcommands. */
248 struct cmd_list_element
*maintenanceprintlist
;
250 struct cmd_list_element
*setprintlist
;
252 struct cmd_list_element
*showprintlist
;
254 struct cmd_list_element
*setchecklist
;
256 struct cmd_list_element
*showchecklist
;
258 /* stdio stream that command input is being read from. Set to stdin normally.
259 Set by source_command to the file we are sourcing. Set to NULL if we are
260 executing a user-defined command or interacting via a GUI. */
264 /* Current working directory. */
266 char *current_directory
;
268 /* The directory name is actually stored here (usually). */
269 char gdb_dirbuf
[1024];
271 /* Function to call before reading a command, if nonzero.
272 The function receives two args: an input stream,
273 and a prompt string. */
275 void (*window_hook
) PARAMS ((FILE *, char *));
280 /* gdb prints this when reading a command interactively */
281 static char *gdb_prompt_string
; /* the global prompt string */
282 extern char *get_prompt
PARAMS ((void)); /* access function for prompt string */
284 /* Buffer used for reading command lines, and the size
285 allocated for it so far. */
290 /* Nonzero if the current command is modified by "server ". This
291 affects things like recording into the command history, comamnds
292 repeating on RETURN, etc. This is so a user interface (emacs, GUI,
293 whatever) can issue its own commands and also send along commands
294 from the user, and have the user not notice that the user interface
295 is issuing commands too. */
298 /* Baud rate specified for talking to serial target systems. Default
299 is left as -1, so targets can choose their own defaults. */
300 /* FIXME: This means that "show remotebaud" and gr_files_info can print -1
301 or (unsigned int)-1. This is a Bad User Interface. */
305 /* Timeout limit for response from target. */
307 int remote_timeout
= 20; /* Set default to 20 */
309 /* Non-zero tells remote* modules to output debugging info. */
311 int remote_debug
= 0;
313 /* Non-zero means the target is running. Note: this is different from
314 saying that there is an active target and we are stopped at a
315 breakpoint, for instance. This is a real indicator whether the
316 target is off and running, which gdb is doing something else. */
317 int target_executing
= 0;
319 /* Level of control structure. */
320 static int control_level
;
322 /* Structure for arguments to user defined functions. */
323 #define MAXUSERARGS 10
326 struct user_args
*next
;
337 /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */
341 #define STOP_SIGNAL SIGTSTP
342 static void stop_sig
PARAMS ((int));
346 /* Some System V have job control but not sigsetmask(). */
347 #if !defined (HAVE_SIGSETMASK)
349 #define HAVE_SIGSETMASK 1
351 #define HAVE_SIGSETMASK 0
355 #if 0 == (HAVE_SIGSETMASK)
356 #define sigsetmask(n)
359 /* Hooks for alternate command interfaces. */
361 /* Called after most modules have been initialized, but before taking users
364 void (*init_ui_hook
) PARAMS ((char *argv0
));
366 /* This hook is called from within gdb's many mini-event loops which could
367 steal control from a real user interface's event loop. It returns
368 non-zero if the user is requesting a detach, zero otherwise. */
370 int (*ui_loop_hook
) PARAMS ((int));
372 /* Called instead of command_loop at top level. Can be invoked via
373 return_to_top_level. */
375 void (*command_loop_hook
) PARAMS ((void));
378 /* Called instead of fputs for all output. */
380 void (*fputs_unfiltered_hook
) PARAMS ((const char *linebuffer
, GDB_FILE
* stream
));
382 /* Called from print_frame_info to list the line we stopped in. */
384 void (*print_frame_info_listing_hook
) PARAMS ((struct symtab
* s
, int line
,
385 int stopline
, int noerror
));
386 /* Replaces most of query. */
388 int (*query_hook
) PARAMS ((const char *, va_list));
390 /* Replaces most of warning. */
392 void (*warning_hook
) PARAMS ((const char *, va_list));
394 /* These three functions support getting lines of text from the user. They
395 are used in sequence. First readline_begin_hook is called with a text
396 string that might be (for example) a message for the user to type in a
397 sequence of commands to be executed at a breakpoint. If this function
398 calls back to a GUI, it might take this opportunity to pop up a text
399 interaction window with this message. Next, readline_hook is called
400 with a prompt that is emitted prior to collecting the user input.
401 It can be called multiple times. Finally, readline_end_hook is called
402 to notify the GUI that we are done with the interaction window and it
405 void (*readline_begin_hook
) PARAMS ((char *,...));
406 char *(*readline_hook
) PARAMS ((char *));
407 void (*readline_end_hook
) PARAMS ((void));
409 /* Called as appropriate to notify the interface of the specified breakpoint
412 void (*create_breakpoint_hook
) PARAMS ((struct breakpoint
* bpt
));
413 void (*delete_breakpoint_hook
) PARAMS ((struct breakpoint
* bpt
));
414 void (*modify_breakpoint_hook
) PARAMS ((struct breakpoint
* bpt
));
416 /* Called as appropriate to notify the interface that we have attached
417 to or detached from an already running process. */
419 void (*attach_hook
) PARAMS ((void));
420 void (*detach_hook
) PARAMS ((void));
422 /* Called during long calculations to allow GUI to repair window damage, and to
423 check for stop buttons, etc... */
425 void (*interactive_hook
) PARAMS ((void));
427 /* Called when the registers have changed, as a hint to a GUI
428 to minimize window update. */
430 void (*registers_changed_hook
) PARAMS ((void));
432 /* Tell the GUI someone changed the register REGNO. -1 means
433 that the caller does not know which register changed or
434 that several registers have changed (see value_assign). */
435 void (*register_changed_hook
) PARAMS ((int regno
));
437 /* Tell the GUI someone changed LEN bytes of memory at ADDR */
438 void (*memory_changed_hook
) PARAMS ((CORE_ADDR addr
, int len
));
440 /* Called when going to wait for the target. Usually allows the GUI to run
441 while waiting for target events. */
443 int (*target_wait_hook
) PARAMS ((int pid
, struct target_waitstatus
* status
));
445 /* Used by UI as a wrapper around command execution. May do various things
446 like enabling/disabling buttons, etc... */
448 void (*call_command_hook
) PARAMS ((struct cmd_list_element
* c
, char *cmd
,
451 /* Called after a `set' command has finished. Is only run if the
452 `set' command succeeded. */
454 void (*set_hook
) PARAMS ((struct cmd_list_element
*c
));
456 /* Called when the current thread changes. Argument is thread id. */
458 void (*context_hook
) PARAMS ((int id
));
460 /* Takes control from error (). Typically used to prevent longjmps out of the
461 middle of the GUI. Usually used in conjunction with a catch routine. */
463 NORETURN
void (*error_hook
)
464 PARAMS ((void)) ATTR_NORETURN
;
467 /* Where to go for return_to_top_level (RETURN_ERROR). */
468 SIGJMP_BUF error_return
;
469 /* Where to go for return_to_top_level (RETURN_QUIT). */
470 SIGJMP_BUF quit_return
;
472 /* Return for reason REASON. This generally gets back to the command
473 loop, but can be caught via catch_errors. */
476 return_to_top_level (reason
)
477 enum return_reason reason
;
482 /* Perhaps it would be cleaner to do this via the cleanup chain (not sure
483 I can think of a reason why that is vital, though). */
484 bpstat_clear_actions (stop_bpstat
); /* Clear queued breakpoint commands */
486 disable_current_display ();
487 do_cleanups (ALL_CLEANUPS
);
488 if (event_loop_p
&& target_can_async_p ())
489 do_exec_cleanups (ALL_CLEANUPS
);
490 if (event_loop_p
&& sync_execution
)
491 do_exec_error_cleanups (ALL_CLEANUPS
);
493 if (annotation_level
> 1)
504 (NORETURN
void) SIGLONGJMP
505 (reason
== RETURN_ERROR
? error_return
: quit_return
, 1);
508 /* Call FUNC with arg ARGS, catching any errors. If there is no
509 error, return the value returned by FUNC. If there is an error,
510 print ERRSTRING, print the specific error message, then return
513 Must not be called with immediate_quit in effect (bad things might
514 happen, say we got a signal in the middle of a memcpy to quit_return).
515 This is an OK restriction; with very few exceptions immediate_quit can
516 be replaced by judicious use of QUIT.
518 MASK specifies what to catch; it is normally set to
519 RETURN_MASK_ALL, if for no other reason than that the code which
520 calls catch_errors might not be set up to deal with a quit which
521 isn't caught. But if the code can deal with it, it generally
522 should be RETURN_MASK_ERROR, unless for some reason it is more
523 useful to abort only the portion of the operation inside the
524 catch_errors. Note that quit should return to the command line
525 fairly quickly, even if some further processing is being done. */
528 catch_errors (func
, args
, errstring
, mask
)
529 catch_errors_ftype
*func
;
534 SIGJMP_BUF saved_error
;
535 SIGJMP_BUF saved_quit
;
538 struct cleanup
*saved_cleanup_chain
;
539 char *saved_error_pre_print
;
540 char *saved_quit_pre_print
;
542 saved_cleanup_chain
= save_cleanups ();
543 saved_error_pre_print
= error_pre_print
;
544 saved_quit_pre_print
= quit_pre_print
;
546 if (mask
& RETURN_MASK_ERROR
)
548 memcpy ((char *) saved_error
, (char *) error_return
, sizeof (SIGJMP_BUF
));
549 error_pre_print
= errstring
;
551 if (mask
& RETURN_MASK_QUIT
)
553 memcpy (saved_quit
, quit_return
, sizeof (SIGJMP_BUF
));
554 quit_pre_print
= errstring
;
557 if (SIGSETJMP (tmp_jmp
) == 0)
559 if (mask
& RETURN_MASK_ERROR
)
560 memcpy (error_return
, tmp_jmp
, sizeof (SIGJMP_BUF
));
561 if (mask
& RETURN_MASK_QUIT
)
562 memcpy (quit_return
, tmp_jmp
, sizeof (SIGJMP_BUF
));
563 val
= (*func
) (args
);
568 restore_cleanups (saved_cleanup_chain
);
570 if (mask
& RETURN_MASK_ERROR
)
572 memcpy (error_return
, saved_error
, sizeof (SIGJMP_BUF
));
573 error_pre_print
= saved_error_pre_print
;
575 if (mask
& RETURN_MASK_QUIT
)
577 memcpy (quit_return
, saved_quit
, sizeof (SIGJMP_BUF
));
578 quit_pre_print
= saved_quit_pre_print
;
583 /* Handler for SIGHUP. */
590 catch_errors (quit_cover
, NULL
,
591 "Could not kill the program being debugged", RETURN_MASK_ALL
);
592 signal (SIGHUP
, SIG_DFL
);
593 kill (getpid (), SIGHUP
);
596 /* Just a little helper function for disconnect(). */
598 /* NOTE 1999-04-29: This function will be static again, once we modify
599 gdb to use the event loop as the default command loop and we merge
600 event-top.c into this file, top.c */
605 caution
= 0; /* Throw caution to the wind -- we're exiting.
606 This prevents asking the user dumb questions. */
607 quit_command ((char *) 0, 0);
610 #endif /* defined SIGHUP */
612 /* Line number we are currently in in a file which is being sourced. */
613 /* NOTE 1999-04-29: This variable will be static again, once we modify
614 gdb to use the event loop as the default command loop and we merge
615 event-top.c into this file, top.c */
616 /* static */ int source_line_number
;
618 /* Name of the file we are sourcing. */
619 /* NOTE 1999-04-29: This variable will be static again, once we modify
620 gdb to use the event loop as the default command loop and we merge
621 event-top.c into this file, top.c */
622 /* static */ char *source_file_name
;
624 /* Buffer containing the error_pre_print used by the source stuff.
626 /* NOTE 1999-04-29: This variable will be static again, once we modify
627 gdb to use the event loop as the default command loop and we merge
628 event-top.c into this file, top.c */
629 /* static */ char *source_error
;
630 static int source_error_allocated
;
632 /* Something to glom on to the start of error_pre_print if source_file_name
634 /* NOTE 1999-04-29: This variable will be static again, once we modify
635 gdb to use the event loop as the default command loop and we merge
636 event-top.c into this file, top.c */
637 /* static */ char *source_pre_error
;
639 /* Clean up on error during a "source" command (or execution of a
640 user-defined command). */
643 source_cleanup (stream
)
646 /* Restore the previous input stream. */
650 /* Read commands from STREAM. */
652 read_command_file (stream
)
655 struct cleanup
*cleanups
;
657 cleanups
= make_cleanup ((make_cleanup_func
) source_cleanup
, instream
);
660 do_cleanups (cleanups
);
663 extern void init_proc
PARAMS ((void));
665 void (*pre_init_ui_hook
) PARAMS ((void));
671 if (pre_init_ui_hook
)
674 /* Run the init function of each source file */
676 getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
));
677 current_directory
= gdb_dirbuf
;
680 /* Make sure we return to the original directory upon exit, come
681 what may, since the OS doesn't do that for us. */
682 make_final_cleanup ((make_cleanup_func
) chdir
, strsave (current_directory
));
685 init_cmd_lists (); /* This needs to be done first */
686 initialize_targets (); /* Setup target_terminal macros for utils.c */
687 initialize_utils (); /* Make errors and warnings possible */
688 initialize_all_files ();
689 initialize_current_architecture ();
690 init_main (); /* But that omits this file! Do it now */
692 /* The signal handling mechanism is different depending whether or
693 not the async version is run. NOTE: in the future we plan to make
694 the event loop be the default engine of gdb, and this difference
697 async_init_signals ();
701 /* We need a default language for parsing expressions, so simple things like
702 "set width 0" won't fail if no language is explicitly set in a config file
703 or implicitly set by reading an executable during startup. */
704 set_language (language_c
);
705 expected_language
= current_language
; /* don't warn about the change. */
707 /* All the interpreters should have had a look at things by now.
708 Initialize the selected interpreter. */
710 init_ui_hook (argv0
);
713 /* Allocate, initialize a new command line structure for one of the
714 control commands (if/while). */
716 static struct command_line
*
717 build_command_line (type
, args
)
718 enum command_control_type type
;
721 struct command_line
*cmd
;
724 error ("if/while commands require arguments.\n");
726 cmd
= (struct command_line
*) xmalloc (sizeof (struct command_line
));
728 cmd
->control_type
= type
;
732 = (struct command_line
**) xmalloc (sizeof (struct command_line
*)
734 memset (cmd
->body_list
, 0, sizeof (struct command_line
*) * cmd
->body_count
);
735 cmd
->line
= savestring (args
, strlen (args
));
739 /* Build and return a new command structure for the control commands
740 such as "if" and "while". */
742 static struct command_line
*
743 get_command_line (type
, arg
)
744 enum command_control_type type
;
747 struct command_line
*cmd
;
748 struct cleanup
*old_chain
= NULL
;
750 /* Allocate and build a new command line structure. */
751 cmd
= build_command_line (type
, arg
);
753 old_chain
= make_cleanup ((make_cleanup_func
) free_command_lines
, &cmd
);
755 /* Read in the body of this command. */
756 if (recurse_read_control_structure (cmd
) == invalid_control
)
758 warning ("error reading in control structure\n");
759 do_cleanups (old_chain
);
763 discard_cleanups (old_chain
);
767 /* Recursively print a command (including full control structures). */
769 print_command_line (cmd
, depth
, stream
)
770 struct command_line
*cmd
;
778 for (i
= 0; i
< depth
; i
++)
779 fputs_filtered (" ", stream
);
782 /* A simple command, print it and return. */
783 if (cmd
->control_type
== simple_control
)
785 fputs_filtered (cmd
->line
, stream
);
786 fputs_filtered ("\n", stream
);
790 /* loop_continue to jump to the start of a while loop, print it
792 if (cmd
->control_type
== continue_control
)
794 fputs_filtered ("loop_continue\n", stream
);
798 /* loop_break to break out of a while loop, print it and return. */
799 if (cmd
->control_type
== break_control
)
801 fputs_filtered ("loop_break\n", stream
);
805 /* A while command. Recursively print its subcommands before returning. */
806 if (cmd
->control_type
== while_control
)
808 struct command_line
*list
;
809 fputs_filtered ("while ", stream
);
810 fputs_filtered (cmd
->line
, stream
);
811 fputs_filtered ("\n", stream
);
812 list
= *cmd
->body_list
;
815 print_command_line (list
, depth
+ 1, stream
);
820 /* An if command. Recursively print both arms before returning. */
821 if (cmd
->control_type
== if_control
)
823 fputs_filtered ("if ", stream
);
824 fputs_filtered (cmd
->line
, stream
);
825 fputs_filtered ("\n", stream
);
827 print_command_line (cmd
->body_list
[0], depth
+ 1, stream
);
829 /* Show the false arm if it exists. */
830 if (cmd
->body_count
== 2)
834 for (i
= 0; i
< depth
; i
++)
835 fputs_filtered (" ", stream
);
837 fputs_filtered ("else\n", stream
);
838 print_command_line (cmd
->body_list
[1], depth
+ 1, stream
);
842 for (i
= 0; i
< depth
; i
++)
843 fputs_filtered (" ", stream
);
845 fputs_filtered ("end\n", stream
);
849 /* Execute the command in CMD. */
851 enum command_control_type
852 execute_control_command (cmd
)
853 struct command_line
*cmd
;
855 struct expression
*expr
;
856 struct command_line
*current
;
857 struct cleanup
*old_chain
= 0;
861 enum command_control_type ret
;
864 switch (cmd
->control_type
)
867 /* A simple command, execute it and return. */
868 new_line
= insert_args (cmd
->line
);
870 return invalid_control
;
871 old_chain
= make_cleanup ((make_cleanup_func
) free_current_contents
,
873 execute_command (new_line
, 0);
874 ret
= cmd
->control_type
;
877 case continue_control
:
879 /* Return for "continue", and "break" so we can either
880 continue the loop at the top, or break out. */
881 ret
= cmd
->control_type
;
886 /* Parse the loop control expression for the while statement. */
887 new_line
= insert_args (cmd
->line
);
889 return invalid_control
;
890 old_chain
= make_cleanup ((make_cleanup_func
) free_current_contents
,
892 expr
= parse_expression (new_line
);
893 make_cleanup ((make_cleanup_func
) free_current_contents
, &expr
);
895 ret
= simple_control
;
898 /* Keep iterating so long as the expression is true. */
905 /* Evaluate the expression. */
906 val_mark
= value_mark ();
907 val
= evaluate_expression (expr
);
908 cond_result
= value_true (val
);
909 value_free_to_mark (val_mark
);
911 /* If the value is false, then break out of the loop. */
915 /* Execute the body of the while statement. */
916 current
= *cmd
->body_list
;
919 ret
= execute_control_command (current
);
921 /* If we got an error, or a "break" command, then stop
923 if (ret
== invalid_control
|| ret
== break_control
)
929 /* If we got a "continue" command, then restart the loop
931 if (ret
== continue_control
)
934 /* Get the next statement. */
935 current
= current
->next
;
939 /* Reset RET so that we don't recurse the break all the way down. */
940 if (ret
== break_control
)
941 ret
= simple_control
;
948 new_line
= insert_args (cmd
->line
);
950 return invalid_control
;
951 old_chain
= make_cleanup ((make_cleanup_func
) free_current_contents
,
953 /* Parse the conditional for the if statement. */
954 expr
= parse_expression (new_line
);
955 make_cleanup ((make_cleanup_func
) free_current_contents
, &expr
);
958 ret
= simple_control
;
960 /* Evaluate the conditional. */
961 val_mark
= value_mark ();
962 val
= evaluate_expression (expr
);
964 /* Choose which arm to take commands from based on the value of the
965 conditional expression. */
966 if (value_true (val
))
967 current
= *cmd
->body_list
;
968 else if (cmd
->body_count
== 2)
969 current
= *(cmd
->body_list
+ 1);
970 value_free_to_mark (val_mark
);
972 /* Execute commands in the given arm. */
975 ret
= execute_control_command (current
);
977 /* If we got an error, get out. */
978 if (ret
!= simple_control
)
981 /* Get the next statement in the body. */
982 current
= current
->next
;
989 warning ("Invalid control type in command structure.");
990 return invalid_control
;
994 do_cleanups (old_chain
);
999 /* "while" command support. Executes a body of statements while the
1000 loop condition is nonzero. */
1003 while_command (arg
, from_tty
)
1007 struct command_line
*command
= NULL
;
1010 command
= get_command_line (while_control
, arg
);
1012 if (command
== NULL
)
1015 execute_control_command (command
);
1016 free_command_lines (&command
);
1019 /* "if" command support. Execute either the true or false arm depending
1020 on the value of the if conditional. */
1023 if_command (arg
, from_tty
)
1027 struct command_line
*command
= NULL
;
1030 command
= get_command_line (if_control
, arg
);
1032 if (command
== NULL
)
1035 execute_control_command (command
);
1036 free_command_lines (&command
);
1043 struct user_args
*oargs
= user_args
;
1045 internal_error ("Internal error, arg_cleanup called with no user args.\n");
1047 user_args
= user_args
->next
;
1051 /* Bind the incomming arguments for a user defined command to
1052 $arg0, $arg1 ... $argMAXUSERARGS. */
1054 static struct cleanup
*
1058 struct user_args
*args
;
1059 struct cleanup
*old_chain
;
1060 unsigned int arg_count
= 0;
1062 args
= (struct user_args
*) xmalloc (sizeof (struct user_args
));
1063 memset (args
, 0, sizeof (struct user_args
));
1065 args
->next
= user_args
;
1068 old_chain
= make_cleanup ((make_cleanup_func
) arg_cleanup
, 0);
1080 if (arg_count
>= MAXUSERARGS
)
1082 error ("user defined function may only have %d arguments.\n",
1087 /* Strip whitespace. */
1088 while (*p
== ' ' || *p
== '\t')
1091 /* P now points to an argument. */
1093 user_args
->a
[arg_count
].arg
= p
;
1095 /* Get to the end of this argument. */
1098 if (((*p
== ' ' || *p
== '\t')) && !squote
&& !dquote
&& !bsquote
)
1104 else if (*p
== '\\')
1127 user_args
->a
[arg_count
].len
= p
- start_arg
;
1134 /* Given character string P, return a point to the first argument ($arg),
1135 or NULL if P contains no arguments. */
1141 while ((p
= strchr (p
, '$')))
1143 if (strncmp (p
, "$arg", 4) == 0 && isdigit (p
[4]))
1150 /* Insert the user defined arguments stored in user_arg into the $arg
1151 arguments found in line, with the updated copy being placed into nline. */
1157 char *p
, *save_line
, *new_line
;
1160 /* First we need to know how much memory to allocate for the new line. */
1163 while ((p
= locate_arg (line
)))
1168 if (i
>= user_args
->count
)
1170 error ("Missing argument %d in user function.\n", i
);
1173 len
+= user_args
->a
[i
].len
;
1177 /* Don't forget the tail. */
1178 len
+= strlen (line
);
1180 /* Allocate space for the new line and fill it in. */
1181 new_line
= (char *) xmalloc (len
+ 1);
1182 if (new_line
== NULL
)
1185 /* Restore pointer to beginning of old line. */
1188 /* Save pointer to beginning of new line. */
1189 save_line
= new_line
;
1191 while ((p
= locate_arg (line
)))
1195 memcpy (new_line
, line
, p
- line
);
1196 new_line
+= p
- line
;
1199 len
= user_args
->a
[i
].len
;
1202 memcpy (new_line
, user_args
->a
[i
].arg
, len
);
1207 /* Don't forget the tail. */
1208 strcpy (new_line
, line
);
1210 /* Return a pointer to the beginning of the new line. */
1215 execute_user_command (c
, args
)
1216 struct cmd_list_element
*c
;
1219 register struct command_line
*cmdlines
;
1220 struct cleanup
*old_chain
;
1221 enum command_control_type ret
;
1223 old_chain
= setup_user_args (args
);
1225 cmdlines
= c
->user_commands
;
1230 /* Set the instream to 0, indicating execution of a
1231 user-defined function. */
1232 old_chain
= make_cleanup ((make_cleanup_func
) source_cleanup
, instream
);
1233 instream
= (FILE *) 0;
1236 ret
= execute_control_command (cmdlines
);
1237 if (ret
!= simple_control
&& ret
!= break_control
)
1239 warning ("Error in control structure.\n");
1242 cmdlines
= cmdlines
->next
;
1244 do_cleanups (old_chain
);
1247 /* Execute the line P as a command.
1248 Pass FROM_TTY as second argument to the defining function. */
1251 execute_command (p
, from_tty
)
1255 register struct cmd_list_element
*c
;
1256 register enum language flang
;
1257 static int warned
= 0;
1258 /* FIXME: These should really be in an appropriate header file */
1259 extern void serial_log_command
PARAMS ((const char *));
1263 /* Force cleanup of any alloca areas if using C alloca instead of
1264 a builtin alloca. */
1267 /* This can happen when command_line_input hits end of file. */
1271 serial_log_command (p
);
1273 while (*p
== ' ' || *p
== '\t')
1279 c
= lookup_cmd (&p
, cmdlist
, "", 0, 1);
1281 /* If the target is running, we allow only a limited set of
1283 if (event_loop_p
&& target_can_async_p () && target_executing
)
1284 if (!strcmp (c
->name
, "help")
1285 && !strcmp (c
->name
, "pwd")
1286 && !strcmp (c
->name
, "show")
1287 && !strcmp (c
->name
, "stop"))
1288 error ("Cannot execute this command while the target is running.");
1290 /* Pass null arg rather than an empty one. */
1293 /* Clear off trailing whitespace, except for set and complete command. */
1294 if (arg
&& c
->type
!= set_cmd
&& c
->function
.cfunc
!= complete_command
)
1296 p
= arg
+ strlen (arg
) - 1;
1297 while (p
>= arg
&& (*p
== ' ' || *p
== '\t'))
1302 /* If this command has been hooked, run the hook first. */
1304 execute_user_command (c
->hook
, (char *) 0);
1306 if (c
->class == class_user
)
1307 execute_user_command (c
, arg
);
1308 else if (c
->type
== set_cmd
|| c
->type
== show_cmd
)
1309 do_setshow_command (arg
, from_tty
& caution
, c
);
1310 else if (c
->function
.cfunc
== NO_FUNCTION
)
1311 error ("That is not a command, just a help topic.");
1312 else if (call_command_hook
)
1313 call_command_hook (c
, arg
, from_tty
& caution
);
1315 (*c
->function
.cfunc
) (arg
, from_tty
& caution
);
1318 /* Tell the user if the language has changed (except first time). */
1319 if (current_language
!= expected_language
)
1321 if (language_mode
== language_mode_auto
)
1323 language_info (1); /* Print what changed. */
1328 /* Warn the user if the working language does not match the
1329 language of the current frame. Only warn the user if we are
1330 actually running the program, i.e. there is a stack. */
1331 /* FIXME: This should be cacheing the frame and only running when
1332 the frame changes. */
1334 if (target_has_stack
)
1336 flang
= get_frame_language ();
1338 && flang
!= language_unknown
1339 && flang
!= current_language
->la_language
)
1341 printf_filtered ("%s\n", lang_frame_mismatch_warn
);
1348 /* NOTE 1999-04-29: This function will be static again, once we modify
1349 gdb to use the event loop as the default command loop and we merge
1350 event-top.c into this file, top.c */
1352 command_loop_marker (foo
)
1357 /* Read commands from `instream' and execute them
1358 until end of file or error reading instream. */
1363 struct cleanup
*old_chain
;
1365 int stdin_is_tty
= ISATTY (stdin
);
1366 long time_at_cmd_start
;
1368 long space_at_cmd_start
= 0;
1370 extern int display_time
;
1371 extern int display_space
;
1373 while (instream
&& !feof (instream
))
1376 extern int insert_mode
;
1378 if (window_hook
&& instream
== stdin
)
1379 (*window_hook
) (instream
, get_prompt ());
1382 if (instream
== stdin
&& stdin_is_tty
)
1383 reinitialize_more_filter ();
1384 old_chain
= make_cleanup ((make_cleanup_func
) command_loop_marker
, 0);
1387 /* A bit of paranoia: I want to make sure the "insert_mode" global
1388 * is clear except when it is being used for command-line editing
1389 * (see tuiIO.c, utils.c); otherwise normal output will
1390 * get messed up in the TUI. So clear it before/after
1391 * the command-line-input call. - RT
1395 /* Get a command-line. This calls the readline package. */
1396 command
= command_line_input (instream
== stdin
?
1397 get_prompt () : (char *) NULL
,
1398 instream
== stdin
, "prompt");
1405 time_at_cmd_start
= get_run_time ();
1410 extern char **environ
;
1411 char *lim
= (char *) sbrk (0);
1413 space_at_cmd_start
= (long) (lim
- (char *) &environ
);
1417 execute_command (command
, instream
== stdin
);
1418 /* Do any commands attached to breakpoint we stopped at. */
1419 bpstat_do_actions (&stop_bpstat
);
1420 do_cleanups (old_chain
);
1424 long cmd_time
= get_run_time () - time_at_cmd_start
;
1426 printf_unfiltered ("Command execution time: %ld.%06ld\n",
1427 cmd_time
/ 1000000, cmd_time
% 1000000);
1433 extern char **environ
;
1434 char *lim
= (char *) sbrk (0);
1435 long space_now
= lim
- (char *) &environ
;
1436 long space_diff
= space_now
- space_at_cmd_start
;
1438 printf_unfiltered ("Space used: %ld (%c%ld for this command)\n",
1440 (space_diff
>= 0 ? '+' : '-'),
1448 /* Commands call this if they do not want to be repeated by null lines. */
1456 /* If we aren't reading from standard input, we are saving the last
1457 thing read from stdin in line and don't want to delete it. Null lines
1458 won't repeat here in any case. */
1459 if (instream
== stdin
)
1463 /* Read a line from the stream "instream" without command line editing.
1465 It prints PROMPT_ARG once at the start.
1466 Action is compatible with "readline", e.g. space for the result is
1467 malloc'd and should be freed by the caller.
1469 A NULL return means end of file. */
1471 gdb_readline (prompt_arg
)
1476 int input_index
= 0;
1477 int result_size
= 80;
1481 /* Don't use a _filtered function here. It causes the assumed
1482 character position to be off, since the newline we read from
1483 the user is not accounted for. */
1484 fputs_unfiltered (prompt_arg
, gdb_stdout
);
1486 /* Move to a new line so the entered line doesn't have a prompt
1487 on the front of it. */
1488 fputs_unfiltered ("\n", gdb_stdout
);
1490 gdb_flush (gdb_stdout
);
1493 result
= (char *) xmalloc (result_size
);
1497 /* Read from stdin if we are executing a user defined command.
1498 This is the right thing for prompt_for_continue, at least. */
1499 c
= fgetc (instream
? instream
: stdin
);
1503 if (input_index
> 0)
1504 /* The last line does not end with a newline. Return it, and
1505 if we are called again fgetc will still return EOF and
1506 we'll return NULL then. */
1513 #ifndef CRLF_SOURCE_FILES
1517 if (input_index
> 0 && result
[input_index
- 1] == '\r')
1523 result
[input_index
++] = c
;
1524 while (input_index
>= result_size
)
1527 result
= (char *) xrealloc (result
, result_size
);
1531 result
[input_index
++] = '\0';
1535 /* Variables which control command line editing and history
1536 substitution. These variables are given default values at the end
1538 static int command_editing_p
;
1539 /* NOTE 1999-04-29: This variable will be static again, once we modify
1540 gdb to use the event loop as the default command loop and we merge
1541 event-top.c into this file, top.c */
1542 /* static */ int history_expansion_p
;
1543 static int write_history_p
;
1544 static int history_size
;
1545 static char *history_filename
;
1547 /* readline uses the word breaks for two things:
1548 (1) In figuring out where to point the TEXT parameter to the
1549 rl_completion_entry_function. Since we don't use TEXT for much,
1550 it doesn't matter a lot what the word breaks are for this purpose, but
1551 it does affect how much stuff M-? lists.
1552 (2) If one of the matches contains a word break character, readline
1553 will quote it. That's why we switch between
1554 gdb_completer_word_break_characters and
1555 gdb_completer_command_word_break_characters. I'm not sure when
1556 we need this behavior (perhaps for funky characters in C++ symbols?). */
1558 /* Variables which are necessary for fancy command line editing. */
1559 char *gdb_completer_word_break_characters
=
1560 " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
1562 /* When completing on command names, we remove '-' from the list of
1563 word break characters, since we use it in command names. If the
1564 readline library sees one in any of the current completion strings,
1565 it thinks that the string needs to be quoted and automatically supplies
1567 char *gdb_completer_command_word_break_characters
=
1568 " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,";
1570 /* Characters that can be used to quote completion strings. Note that we
1571 can't include '"' because the gdb C parser treats such quoted sequences
1573 char *gdb_completer_quote_characters
=
1576 /* Functions that are used as part of the fancy command line editing. */
1578 /* This can be used for functions which don't want to complete on symbols
1579 but don't want to complete on anything else either. */
1582 noop_completer (text
, prefix
)
1589 /* Complete on filenames. */
1591 filename_completer (text
, word
)
1595 /* From readline. */
1596 extern char *filename_completion_function
PARAMS ((char *, int));
1597 int subsequent_name
;
1599 int return_val_used
;
1600 int return_val_alloced
;
1602 return_val_used
= 0;
1603 /* Small for testing. */
1604 return_val_alloced
= 1;
1605 return_val
= (char **) xmalloc (return_val_alloced
* sizeof (char *));
1607 subsequent_name
= 0;
1611 p
= filename_completion_function (text
, subsequent_name
);
1612 if (return_val_used
>= return_val_alloced
)
1614 return_val_alloced
*= 2;
1616 (char **) xrealloc (return_val
,
1617 return_val_alloced
* sizeof (char *));
1621 return_val
[return_val_used
++] = p
;
1624 /* Like emacs, don't complete on old versions. Especially useful
1625 in the "source" command. */
1626 if (p
[strlen (p
) - 1] == '~')
1632 /* Return exactly p. */
1633 return_val
[return_val_used
++] = p
;
1634 else if (word
> text
)
1636 /* Return some portion of p. */
1637 q
= xmalloc (strlen (p
) + 5);
1638 strcpy (q
, p
+ (word
- text
));
1639 return_val
[return_val_used
++] = q
;
1644 /* Return some of TEXT plus p. */
1645 q
= xmalloc (strlen (p
) + (text
- word
) + 5);
1646 strncpy (q
, word
, text
- word
);
1647 q
[text
- word
] = '\0';
1649 return_val
[return_val_used
++] = q
;
1653 subsequent_name
= 1;
1656 /* There is no way to do this just long enough to affect quote inserting
1657 without also affecting the next completion. This should be fixed in
1659 /* Insure that readline does the right thing
1660 with respect to inserting quotes. */
1661 rl_completer_word_break_characters
= "";
1666 /* Here are some useful test cases for completion. FIXME: These should
1667 be put in the test suite. They should be tested with both M-? and TAB.
1669 "show output-" "radix"
1670 "show output" "-radix"
1671 "p" ambiguous (commands starting with p--path, print, printf, etc.)
1672 "p " ambiguous (all symbols)
1673 "info t foo" no completions
1674 "info t " no completions
1675 "info t" ambiguous ("info target", "info terminal", etc.)
1676 "info ajksdlfk" no completions
1677 "info ajksdlfk " no completions
1679 "info " ambiguous (all info commands)
1680 "p \"a" no completions (string constant)
1681 "p 'a" ambiguous (all symbols starting with a)
1682 "p b-a" ambiguous (all symbols starting with a)
1683 "p b-" ambiguous (all symbols)
1684 "file Make" "file" (word break hard to screw up here)
1685 "file ../gdb.stabs/we" "ird" (needs to not break word at slash)
1688 /* Generate completions one by one for the completer. Each time we are
1689 called return another potential completion to the caller.
1690 line_completion just completes on commands or passes the buck to the
1691 command's completer function, the stuff specific to symbol completion
1692 is in make_symbol_completion_list.
1694 TEXT is the caller's idea of the "word" we are looking at.
1696 MATCHES is the number of matches that have currently been collected from
1697 calling this completion function. When zero, then we need to initialize,
1698 otherwise the initialization has already taken place and we can just
1699 return the next potential completion string.
1701 LINE_BUFFER is available to be looked at; it contains the entire text
1702 of the line. POINT is the offset in that line of the cursor. You
1703 should pretend that the line ends at POINT.
1705 Returns NULL if there are no more completions, else a pointer to a string
1706 which is a possible completion, it is the caller's responsibility to
1710 line_completion_function (text
, matches
, line_buffer
, point
)
1716 static char **list
= (char **) NULL
; /* Cache of completions */
1717 static int index
; /* Next cached completion */
1718 char *output
= NULL
;
1719 char *tmp_command
, *p
;
1720 /* Pointer within tmp_command which corresponds to text. */
1722 struct cmd_list_element
*c
, *result_list
;
1726 /* The caller is beginning to accumulate a new set of completions, so
1727 we need to find all of them now, and cache them for returning one at
1728 a time on future calls. */
1732 /* Free the storage used by LIST, but not by the strings inside.
1733 This is because rl_complete_internal () frees the strings. */
1739 /* Choose the default set of word break characters to break completions.
1740 If we later find out that we are doing completions on command strings
1741 (as opposed to strings supplied by the individual command completer
1742 functions, which can be any string) then we will switch to the
1743 special word break set for command strings, which leaves out the
1744 '-' character used in some commands. */
1746 rl_completer_word_break_characters
=
1747 gdb_completer_word_break_characters
;
1749 /* Decide whether to complete on a list of gdb commands or on symbols. */
1750 tmp_command
= (char *) alloca (point
+ 1);
1753 strncpy (tmp_command
, line_buffer
, point
);
1754 tmp_command
[point
] = '\0';
1755 /* Since text always contains some number of characters leading up
1756 to point, we can find the equivalent position in tmp_command
1757 by subtracting that many characters from the end of tmp_command. */
1758 word
= tmp_command
+ point
- strlen (text
);
1762 /* An empty line we want to consider ambiguous; that is, it
1763 could be any command. */
1764 c
= (struct cmd_list_element
*) -1;
1769 c
= lookup_cmd_1 (&p
, cmdlist
, &result_list
, 1);
1772 /* Move p up to the next interesting thing. */
1773 while (*p
== ' ' || *p
== '\t')
1780 /* It is an unrecognized command. So there are no
1781 possible completions. */
1784 else if (c
== (struct cmd_list_element
*) -1)
1788 /* lookup_cmd_1 advances p up to the first ambiguous thing, but
1789 doesn't advance over that thing itself. Do so now. */
1791 while (*q
&& (isalnum (*q
) || *q
== '-' || *q
== '_'))
1793 if (q
!= tmp_command
+ point
)
1795 /* There is something beyond the ambiguous
1796 command, so there are no possible completions. For
1797 example, "info t " or "info t foo" does not complete
1798 to anything, because "info t" can be "info target" or
1804 /* We're trying to complete on the command which was ambiguous.
1805 This we can deal with. */
1808 list
= complete_on_cmdlist (*result_list
->prefixlist
, p
,
1813 list
= complete_on_cmdlist (cmdlist
, p
, word
);
1815 /* Insure that readline does the right thing with respect to
1816 inserting quotes. */
1817 rl_completer_word_break_characters
=
1818 gdb_completer_command_word_break_characters
;
1823 /* We've recognized a full command. */
1825 if (p
== tmp_command
+ point
)
1827 /* There is no non-whitespace in the line beyond the command. */
1829 if (p
[-1] == ' ' || p
[-1] == '\t')
1831 /* The command is followed by whitespace; we need to complete
1832 on whatever comes after command. */
1835 /* It is a prefix command; what comes after it is
1836 a subcommand (e.g. "info "). */
1837 list
= complete_on_cmdlist (*c
->prefixlist
, p
, word
);
1839 /* Insure that readline does the right thing
1840 with respect to inserting quotes. */
1841 rl_completer_word_break_characters
=
1842 gdb_completer_command_word_break_characters
;
1846 list
= complete_on_enum (c
->enums
, p
, word
);
1847 rl_completer_word_break_characters
=
1848 gdb_completer_command_word_break_characters
;
1852 /* It is a normal command; what comes after it is
1853 completed by the command's completer function. */
1854 list
= (*c
->completer
) (p
, word
);
1859 /* The command is not followed by whitespace; we need to
1860 complete on the command itself. e.g. "p" which is a
1861 command itself but also can complete to "print", "ptype"
1865 /* Find the command we are completing on. */
1867 while (q
> tmp_command
)
1869 if (isalnum (q
[-1]) || q
[-1] == '-' || q
[-1] == '_')
1875 list
= complete_on_cmdlist (result_list
, q
, word
);
1877 /* Insure that readline does the right thing
1878 with respect to inserting quotes. */
1879 rl_completer_word_break_characters
=
1880 gdb_completer_command_word_break_characters
;
1885 /* There is non-whitespace beyond the command. */
1887 if (c
->prefixlist
&& !c
->allow_unknown
)
1889 /* It is an unrecognized subcommand of a prefix command,
1890 e.g. "info adsfkdj". */
1895 list
= complete_on_enum (c
->enums
, p
, word
);
1899 /* It is a normal command. */
1900 list
= (*c
->completer
) (p
, word
);
1906 /* If we found a list of potential completions during initialization then
1907 dole them out one at a time. The vector of completions is NULL
1908 terminated, so after returning the last one, return NULL (and continue
1909 to do so) each time we are called after that, until a new list is
1914 output
= list
[index
];
1922 /* Can't do this because readline hasn't yet checked the word breaks
1923 for figuring out whether to insert a quote. */
1925 /* Make sure the word break characters are set back to normal for the
1926 next time that readline tries to complete something. */
1927 rl_completer_word_break_characters
=
1928 gdb_completer_word_break_characters
;
1934 /* Line completion interface function for readline. */
1937 readline_line_completion_function (text
, matches
)
1941 return line_completion_function (text
, matches
, rl_line_buffer
, rl_point
);
1944 /* Skip over a possibly quoted word (as defined by the quote characters
1945 and word break characters the completer uses). Returns pointer to the
1946 location after the "word". */
1952 char quote_char
= '\0';
1955 for (scan
= str
; *scan
!= '\0'; scan
++)
1957 if (quote_char
!= '\0')
1959 /* Ignore everything until the matching close quote char */
1960 if (*scan
== quote_char
)
1962 /* Found matching close quote. */
1967 else if (strchr (gdb_completer_quote_characters
, *scan
))
1969 /* Found start of a quoted string. */
1972 else if (strchr (gdb_completer_word_break_characters
, *scan
))
1986 #if STOP_SIGNAL == SIGTSTP
1987 signal (SIGTSTP
, SIG_DFL
);
1989 kill (getpid (), SIGTSTP
);
1990 signal (SIGTSTP
, stop_sig
);
1992 signal (STOP_SIGNAL
, stop_sig
);
1994 printf_unfiltered ("%s", get_prompt ());
1995 gdb_flush (gdb_stdout
);
1997 /* Forget about any previous command -- null line now will do nothing. */
2000 #endif /* STOP_SIGNAL */
2002 /* Initialize signal handlers. */
2007 /* Under System V the default disposition of a signal is reinstated after
2008 the signal is caught and delivered to an application process. On such
2009 systems one must restore the replacement signal handler if one wishes
2010 to continue handling the signal in one's program. On BSD systems this
2011 is not needed but it is harmless, and it simplifies the code to just do
2012 it unconditionally. */
2013 signal (signo
, do_nothing
);
2019 signal (SIGINT
, request_quit
);
2021 /* If SIGTRAP was set to SIG_IGN, then the SIG_IGN will get passed
2022 to the inferior and breakpoints will be ignored. */
2024 signal (SIGTRAP
, SIG_DFL
);
2027 /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get
2028 passed to the inferior, which we don't want. It would be
2029 possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but
2030 on BSD4.3 systems using vfork, that can affect the
2031 GDB process as well as the inferior (the signal handling tables
2032 might be in memory, shared between the two). Since we establish
2033 a handler for SIGQUIT, when we call exec it will set the signal
2034 to SIG_DFL for us. */
2035 signal (SIGQUIT
, do_nothing
);
2037 if (signal (SIGHUP
, do_nothing
) != SIG_IGN
)
2038 signal (SIGHUP
, disconnect
);
2040 signal (SIGFPE
, float_handler
);
2042 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
2043 signal (SIGWINCH
, SIGWINCH_HANDLER
);
2047 /* Read one line from the command input stream `instream'
2048 into the local static buffer `linebuffer' (whose current length
2050 The buffer is made bigger as necessary.
2051 Returns the address of the start of the line.
2053 NULL is returned for end of file.
2055 *If* the instream == stdin & stdin is a terminal, the line read
2056 is copied into the file line saver (global var char *line,
2057 length linesize) so that it can be duplicated.
2059 This routine either uses fancy command line editing or
2060 simple input as the user has requested. */
2063 command_line_input (prompt_arg
, repeat
, annotation_suffix
)
2066 char *annotation_suffix
;
2068 static char *linebuffer
= 0;
2069 static unsigned linelength
= 0;
2073 char *local_prompt
= prompt_arg
;
2077 /* The annotation suffix must be non-NULL. */
2078 if (annotation_suffix
== NULL
)
2079 annotation_suffix
= "";
2081 if (annotation_level
> 1 && instream
== stdin
)
2083 local_prompt
= alloca ((prompt_arg
== NULL
? 0 : strlen (prompt_arg
))
2084 + strlen (annotation_suffix
) + 40);
2085 if (prompt_arg
== NULL
)
2086 local_prompt
[0] = '\0';
2088 strcpy (local_prompt
, prompt_arg
);
2089 strcat (local_prompt
, "\n\032\032");
2090 strcat (local_prompt
, annotation_suffix
);
2091 strcat (local_prompt
, "\n");
2094 if (linebuffer
== 0)
2097 linebuffer
= (char *) xmalloc (linelength
);
2102 /* Control-C quits instantly if typed while in this loop
2103 since it should not wait until the user types a newline. */
2109 signal (STOP_SIGNAL
, handle_stop_sig
);
2111 signal (STOP_SIGNAL
, stop_sig
);
2117 /* Make sure that all output has been output. Some machines may let
2118 you get away with leaving out some of the gdb_flush, but not all. */
2120 gdb_flush (gdb_stdout
);
2121 gdb_flush (gdb_stderr
);
2123 if (source_file_name
!= NULL
)
2125 ++source_line_number
;
2126 sprintf (source_error
,
2127 "%s%s:%d: Error in sourced command file:\n",
2130 source_line_number
);
2131 error_pre_print
= source_error
;
2134 if (annotation_level
> 1 && instream
== stdin
)
2136 printf_unfiltered ("\n\032\032pre-");
2137 printf_unfiltered (annotation_suffix
);
2138 printf_unfiltered ("\n");
2141 /* Don't use fancy stuff if not talking to stdin. */
2142 if (readline_hook
&& instream
== NULL
)
2144 rl
= (*readline_hook
) (local_prompt
);
2146 else if (command_editing_p
&& instream
== stdin
&& ISATTY (instream
))
2148 rl
= readline (local_prompt
);
2152 rl
= gdb_readline (local_prompt
);
2155 if (annotation_level
> 1 && instream
== stdin
)
2157 printf_unfiltered ("\n\032\032post-");
2158 printf_unfiltered (annotation_suffix
);
2159 printf_unfiltered ("\n");
2162 if (!rl
|| rl
== (char *) EOF
)
2167 if (strlen (rl
) + 1 + (p
- linebuffer
) > linelength
)
2169 linelength
= strlen (rl
) + 1 + (p
- linebuffer
);
2170 nline
= (char *) xrealloc (linebuffer
, linelength
);
2171 p
+= nline
- linebuffer
;
2175 /* Copy line. Don't copy null at end. (Leaves line alone
2176 if this was just a newline) */
2180 free (rl
); /* Allocated in readline. */
2182 if (p
== linebuffer
|| *(p
- 1) != '\\')
2185 p
--; /* Put on top of '\'. */
2186 local_prompt
= (char *) 0;
2191 signal (STOP_SIGNAL
, SIG_DFL
);
2198 #define SERVER_COMMAND_LENGTH 7
2200 (p
- linebuffer
> SERVER_COMMAND_LENGTH
)
2201 && STREQN (linebuffer
, "server ", SERVER_COMMAND_LENGTH
);
2204 /* Note that we don't set `line'. Between this and the check in
2205 dont_repeat, this insures that repeating will still do the
2208 return linebuffer
+ SERVER_COMMAND_LENGTH
;
2211 /* Do history expansion if that is wished. */
2212 if (history_expansion_p
&& instream
== stdin
2213 && ISATTY (instream
))
2215 char *history_value
;
2218 *p
= '\0'; /* Insert null now. */
2219 expanded
= history_expand (linebuffer
, &history_value
);
2222 /* Print the changes. */
2223 printf_unfiltered ("%s\n", history_value
);
2225 /* If there was an error, call this function again. */
2228 free (history_value
);
2229 return command_line_input (prompt_arg
, repeat
, annotation_suffix
);
2231 if (strlen (history_value
) > linelength
)
2233 linelength
= strlen (history_value
) + 1;
2234 linebuffer
= (char *) xrealloc (linebuffer
, linelength
);
2236 strcpy (linebuffer
, history_value
);
2237 p
= linebuffer
+ strlen (linebuffer
);
2238 free (history_value
);
2242 /* If we just got an empty line, and that is supposed
2243 to repeat the previous command, return the value in the
2245 if (repeat
&& p
== linebuffer
)
2247 for (p1
= linebuffer
; *p1
== ' ' || *p1
== '\t'; p1
++);
2253 /* Add line to history if appropriate. */
2254 if (instream
== stdin
2255 && ISATTY (stdin
) && *linebuffer
)
2256 add_history (linebuffer
);
2258 /* Note: lines consisting solely of comments are added to the command
2259 history. This is useful when you type a command, and then
2260 realize you don't want to execute it quite yet. You can comment
2261 out the command and then later fetch it from the value history
2262 and remove the '#'. The kill ring is probably better, but some
2263 people are in the habit of commenting things out. */
2265 *p1
= '\0'; /* Found a comment. */
2267 /* Save into global buffer if appropriate. */
2270 if (linelength
> linesize
)
2272 line
= xrealloc (line
, linelength
);
2273 linesize
= linelength
;
2275 strcpy (line
, linebuffer
);
2283 /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH
2284 code bodies. This is typically used when we encounter an "else"
2285 clause for an "if" command. */
2288 realloc_body_list (command
, new_length
)
2289 struct command_line
*command
;
2293 struct command_line
**body_list
;
2295 n
= command
->body_count
;
2297 /* Nothing to do? */
2298 if (new_length
<= n
)
2301 body_list
= (struct command_line
**)
2302 xmalloc (sizeof (struct command_line
*) * new_length
);
2304 memcpy (body_list
, command
->body_list
, sizeof (struct command_line
*) * n
);
2306 free (command
->body_list
);
2307 command
->body_list
= body_list
;
2308 command
->body_count
= new_length
;
2311 /* Read one line from the input stream. If the command is an "else" or
2312 "end", return such an indication to the caller. */
2314 static enum misc_command_type
2315 read_next_line (command
)
2316 struct command_line
**command
;
2318 char *p
, *p1
, *prompt_ptr
, control_prompt
[256];
2321 if (control_level
>= 254)
2322 error ("Control nesting too deep!\n");
2324 /* Set a prompt based on the nesting of the control commands. */
2325 if (instream
== stdin
|| (instream
== 0 && readline_hook
!= NULL
))
2327 for (i
= 0; i
< control_level
; i
++)
2328 control_prompt
[i
] = ' ';
2329 control_prompt
[i
] = '>';
2330 control_prompt
[i
+ 1] = '\0';
2331 prompt_ptr
= (char *) &control_prompt
[0];
2336 p
= command_line_input (prompt_ptr
, instream
== stdin
, "commands");
2338 /* Not sure what to do here. */
2342 /* Strip leading and trailing whitespace. */
2343 while (*p
== ' ' || *p
== '\t')
2346 p1
= p
+ strlen (p
);
2347 while (p1
!= p
&& (p1
[-1] == ' ' || p1
[-1] == '\t'))
2350 /* Blanks and comments don't really do anything, but we need to
2351 distinguish them from else, end and other commands which can be
2353 if (p1
== p
|| p
[0] == '#')
2356 /* Is this the end of a simple, while, or if control structure? */
2357 if (p1
- p
== 3 && !strncmp (p
, "end", 3))
2360 /* Is the else clause of an if control structure? */
2361 if (p1
- p
== 4 && !strncmp (p
, "else", 4))
2362 return else_command
;
2364 /* Check for while, if, break, continue, etc and build a new command
2365 line structure for them. */
2366 if (p1
- p
> 5 && !strncmp (p
, "while", 5))
2367 *command
= build_command_line (while_control
, p
+ 6);
2368 else if (p1
- p
> 2 && !strncmp (p
, "if", 2))
2369 *command
= build_command_line (if_control
, p
+ 3);
2370 else if (p1
- p
== 10 && !strncmp (p
, "loop_break", 10))
2372 *command
= (struct command_line
*)
2373 xmalloc (sizeof (struct command_line
));
2374 (*command
)->next
= NULL
;
2375 (*command
)->line
= NULL
;
2376 (*command
)->control_type
= break_control
;
2377 (*command
)->body_count
= 0;
2378 (*command
)->body_list
= NULL
;
2380 else if (p1
- p
== 13 && !strncmp (p
, "loop_continue", 13))
2382 *command
= (struct command_line
*)
2383 xmalloc (sizeof (struct command_line
));
2384 (*command
)->next
= NULL
;
2385 (*command
)->line
= NULL
;
2386 (*command
)->control_type
= continue_control
;
2387 (*command
)->body_count
= 0;
2388 (*command
)->body_list
= NULL
;
2392 /* A normal command. */
2393 *command
= (struct command_line
*)
2394 xmalloc (sizeof (struct command_line
));
2395 (*command
)->next
= NULL
;
2396 (*command
)->line
= savestring (p
, p1
- p
);
2397 (*command
)->control_type
= simple_control
;
2398 (*command
)->body_count
= 0;
2399 (*command
)->body_list
= NULL
;
2402 /* Nothing special. */
2406 /* Recursively read in the control structures and create a command_line
2407 structure from them.
2409 The parent_control parameter is the control structure in which the
2410 following commands are nested. */
2412 static enum command_control_type
2413 recurse_read_control_structure (current_cmd
)
2414 struct command_line
*current_cmd
;
2416 int current_body
, i
;
2417 enum misc_command_type val
;
2418 enum command_control_type ret
;
2419 struct command_line
**body_ptr
, *child_tail
, *next
;
2424 /* Sanity checks. */
2425 if (current_cmd
->control_type
== simple_control
)
2427 error ("Recursed on a simple control type\n");
2428 return invalid_control
;
2431 if (current_body
> current_cmd
->body_count
)
2433 error ("Allocated body is smaller than this command type needs\n");
2434 return invalid_control
;
2437 /* Read lines from the input stream and build control structures. */
2443 val
= read_next_line (&next
);
2445 /* Just skip blanks and comments. */
2446 if (val
== nop_command
)
2449 if (val
== end_command
)
2451 if (current_cmd
->control_type
== while_control
2452 || current_cmd
->control_type
== if_control
)
2454 /* Success reading an entire control structure. */
2455 ret
= simple_control
;
2460 ret
= invalid_control
;
2465 /* Not the end of a control structure. */
2466 if (val
== else_command
)
2468 if (current_cmd
->control_type
== if_control
2469 && current_body
== 1)
2471 realloc_body_list (current_cmd
, 2);
2478 ret
= invalid_control
;
2485 child_tail
->next
= next
;
2489 body_ptr
= current_cmd
->body_list
;
2490 for (i
= 1; i
< current_body
; i
++)
2499 /* If the latest line is another control structure, then recurse
2501 if (next
->control_type
== while_control
2502 || next
->control_type
== if_control
)
2505 ret
= recurse_read_control_structure (next
);
2508 if (ret
!= simple_control
)
2518 /* Read lines from the input stream and accumulate them in a chain of
2519 struct command_line's, which is then returned. For input from a
2520 terminal, the special command "end" is used to mark the end of the
2521 input, and is not included in the returned chain of commands. */
2523 #define END_MESSAGE "End with a line saying just \"end\"."
2525 struct command_line
*
2526 read_command_lines (prompt_arg
, from_tty
)
2530 struct command_line
*head
, *tail
, *next
;
2531 struct cleanup
*old_chain
;
2532 enum command_control_type ret
;
2533 enum misc_command_type val
;
2536 if (readline_begin_hook
)
2538 /* Note - intentional to merge messages with no newline */
2539 (*readline_begin_hook
) ("%s %s\n", prompt_arg
, END_MESSAGE
);
2541 else if (from_tty
&& input_from_terminal_p ())
2543 printf_unfiltered ("%s\n%s\n", prompt_arg
, END_MESSAGE
);
2544 gdb_flush (gdb_stdout
);
2552 val
= read_next_line (&next
);
2554 /* Ignore blank lines or comments. */
2555 if (val
== nop_command
)
2558 if (val
== end_command
)
2560 ret
= simple_control
;
2564 if (val
!= ok_command
)
2566 ret
= invalid_control
;
2570 if (next
->control_type
== while_control
2571 || next
->control_type
== if_control
)
2574 ret
= recurse_read_control_structure (next
);
2577 if (ret
== invalid_control
)
2588 old_chain
= make_cleanup ((make_cleanup_func
) free_command_lines
,
2598 if (ret
!= invalid_control
)
2600 discard_cleanups (old_chain
);
2603 do_cleanups (old_chain
);
2606 if (readline_end_hook
)
2608 (*readline_end_hook
) ();
2613 /* Free a chain of struct command_line's. */
2616 free_command_lines (lptr
)
2617 struct command_line
**lptr
;
2619 register struct command_line
*l
= *lptr
;
2620 register struct command_line
*next
;
2621 struct command_line
**blist
;
2626 if (l
->body_count
> 0)
2628 blist
= l
->body_list
;
2629 for (i
= 0; i
< l
->body_count
; i
++, blist
++)
2630 free_command_lines (blist
);
2639 /* Add an element to the list of info subcommands. */
2642 add_info (name
, fun
, doc
)
2644 void (*fun
) PARAMS ((char *, int));
2647 add_cmd (name
, no_class
, fun
, doc
, &infolist
);
2650 /* Add an alias to the list of info subcommands. */
2653 add_info_alias (name
, oldname
, abbrev_flag
)
2658 add_alias_cmd (name
, oldname
, 0, abbrev_flag
, &infolist
);
2661 /* The "info" command is defined as a prefix, with allow_unknown = 0.
2662 Therefore, its own definition is called only for "info" with no args. */
2666 info_command (arg
, from_tty
)
2670 printf_unfiltered ("\"info\" must be followed by the name of an info command.\n");
2671 help_list (infolist
, "info ", -1, gdb_stdout
);
2674 /* The "complete" command is used by Emacs to implement completion. */
2678 complete_command (arg
, from_tty
)
2690 argpoint
= strlen (arg
);
2692 for (completion
= line_completion_function (arg
, i
= 0, arg
, argpoint
);
2694 completion
= line_completion_function (arg
, ++i
, arg
, argpoint
))
2696 printf_unfiltered ("%s\n", completion
);
2701 /* The "show" command with no arguments shows all the settings. */
2705 show_command (arg
, from_tty
)
2709 cmd_show_list (showlist
, from_tty
, "");
2712 /* Add an element to the list of commands. */
2715 add_com (name
, class, fun
, doc
)
2717 enum command_class
class;
2718 void (*fun
) PARAMS ((char *, int));
2721 add_cmd (name
, class, fun
, doc
, &cmdlist
);
2724 /* Add an alias or abbreviation command to the list of commands. */
2727 add_com_alias (name
, oldname
, class, abbrev_flag
)
2730 enum command_class
class;
2733 add_alias_cmd (name
, oldname
, class, abbrev_flag
, &cmdlist
);
2740 error ("Argument required (%s).", why
);
2745 help_command (command
, from_tty
)
2747 int from_tty
; /* Ignored */
2749 help_cmd (command
, gdb_stdout
);
2753 validate_comname (comname
)
2759 error_no_arg ("name of command to define");
2764 if (!isalnum (*p
) && *p
!= '-' && *p
!= '_')
2765 error ("Junk in argument list: \"%s\"", p
);
2770 /* This is just a placeholder in the command data structures. */
2772 user_defined_command (ignore
, from_tty
)
2779 define_command (comname
, from_tty
)
2783 register struct command_line
*cmds
;
2784 register struct cmd_list_element
*c
, *newc
, *hookc
= 0;
2785 char *tem
= comname
;
2787 #define HOOK_STRING "hook-"
2790 validate_comname (comname
);
2792 /* Look it up, and verify that we got an exact match. */
2793 c
= lookup_cmd (&tem
, cmdlist
, "", -1, 1);
2794 if (c
&& !STREQ (comname
, c
->name
))
2799 if (c
->class == class_user
|| c
->class == class_alias
)
2800 tem
= "Redefine command \"%s\"? ";
2802 tem
= "Really redefine built-in command \"%s\"? ";
2803 if (!query (tem
, c
->name
))
2804 error ("Command \"%s\" not redefined.", c
->name
);
2807 /* If this new command is a hook, then mark the command which it
2808 is hooking. Note that we allow hooking `help' commands, so that
2809 we can hook the `stop' pseudo-command. */
2811 if (!strncmp (comname
, HOOK_STRING
, HOOK_LEN
))
2813 /* Look up cmd it hooks, and verify that we got an exact match. */
2814 tem
= comname
+ HOOK_LEN
;
2815 hookc
= lookup_cmd (&tem
, cmdlist
, "", -1, 0);
2816 if (hookc
&& !STREQ (comname
+ HOOK_LEN
, hookc
->name
))
2820 warning ("Your new `%s' command does not hook any existing command.",
2822 if (!query ("Proceed? "))
2823 error ("Not confirmed.");
2827 comname
= savestring (comname
, strlen (comname
));
2829 /* If the rest of the commands will be case insensitive, this one
2830 should behave in the same manner. */
2831 for (tem
= comname
; *tem
; tem
++)
2833 *tem
= tolower (*tem
);
2835 sprintf (tmpbuf
, "Type commands for definition of \"%s\".", comname
);
2836 cmds
= read_command_lines (tmpbuf
, from_tty
);
2838 if (c
&& c
->class == class_user
)
2839 free_command_lines (&c
->user_commands
);
2841 newc
= add_cmd (comname
, class_user
, user_defined_command
,
2842 (c
&& c
->class == class_user
)
2843 ? c
->doc
: savestring ("User-defined.", 13), &cmdlist
);
2844 newc
->user_commands
= cmds
;
2846 /* If this new command is a hook, then mark both commands as being
2850 hookc
->hook
= newc
; /* Target gets hooked. */
2851 newc
->hookee
= hookc
; /* We are marked as hooking target cmd. */
2856 document_command (comname
, from_tty
)
2860 struct command_line
*doclines
;
2861 register struct cmd_list_element
*c
;
2862 char *tem
= comname
;
2865 validate_comname (comname
);
2867 c
= lookup_cmd (&tem
, cmdlist
, "", 0, 1);
2869 if (c
->class != class_user
)
2870 error ("Command \"%s\" is built-in.", comname
);
2872 sprintf (tmpbuf
, "Type documentation for \"%s\".", comname
);
2873 doclines
= read_command_lines (tmpbuf
, from_tty
);
2879 register struct command_line
*cl1
;
2880 register int len
= 0;
2882 for (cl1
= doclines
; cl1
; cl1
= cl1
->next
)
2883 len
+= strlen (cl1
->line
) + 1;
2885 c
->doc
= (char *) xmalloc (len
+ 1);
2888 for (cl1
= doclines
; cl1
; cl1
= cl1
->next
)
2890 strcat (c
->doc
, cl1
->line
);
2892 strcat (c
->doc
, "\n");
2896 free_command_lines (&doclines
);
2899 /* Print the GDB banner. */
2901 print_gdb_version (stream
)
2904 /* From GNU coding standards, first line is meant to be easy for a
2905 program to parse, and is just canonical program name and version
2906 number, which starts after last space. */
2908 fprintf_filtered (stream
, "GNU gdb %s\n", version
);
2910 /* Second line is a copyright notice. */
2912 fprintf_filtered (stream
, "Copyright 1998 Free Software Foundation, Inc.\n");
2914 /* Following the copyright is a brief statement that the program is
2915 free software, that users are free to copy and change it on
2916 certain conditions, that it is covered by the GNU GPL, and that
2917 there is no warranty. */
2919 fprintf_filtered (stream
, "\
2920 GDB is free software, covered by the GNU General Public License, and you are\n\
2921 welcome to change it and/or distribute copies of it under certain conditions.\n\
2922 Type \"show copying\" to see the conditions.\n\
2923 There is absolutely no warranty for GDB. Type \"show warranty\" for details.\n");
2925 /* After the required info we print the configuration information. */
2927 fprintf_filtered (stream
, "This GDB was configured as \"");
2928 if (!STREQ (host_name
, target_name
))
2930 fprintf_filtered (stream
, "--host=%s --target=%s", host_name
, target_name
);
2934 fprintf_filtered (stream
, "%s", host_name
);
2936 fprintf_filtered (stream
, "\".");
2941 show_version (args
, from_tty
)
2946 print_gdb_version (gdb_stdout
);
2947 printf_filtered ("\n");
2951 /* get_prompt: access method for the GDB prompt string. */
2953 #define MAX_PROMPT_SIZE 256
2956 * int get_prompt_1 (char * buf);
2958 * Work-horse for get_prompt (called via catch_errors).
2959 * Argument is buffer to hold the formatted prompt.
2961 * Returns: 1 for success (use formatted prompt)
2962 * 0 for failure (use gdb_prompt_string).
2965 static int gdb_prompt_escape
;
2968 get_prompt_1 (formatted_prompt
)
2969 char *formatted_prompt
;
2974 local_prompt
= PROMPT (0);
2976 local_prompt
= gdb_prompt_string
;
2979 if (gdb_prompt_escape
== 0)
2981 return 0; /* do no formatting */
2984 /* formatted prompt */
2986 char fmt
[40], *promptp
, *outp
, *tmp
;
2993 struct type
*arg_type
, *elt_type
;
2995 promptp
= local_prompt
;
2996 outp
= formatted_prompt
;
2998 while (*promptp
!= '\0')
3000 int available
= MAX_PROMPT_SIZE
- (outp
- formatted_prompt
) - 1;
3002 if (*promptp
!= gdb_prompt_escape
)
3004 if (available
>= 1) /* overflow protect */
3005 *outp
++ = *promptp
++;
3009 /* GDB prompt string contains escape char. Parse for arg.
3010 Two consecutive escape chars followed by arg followed by
3011 a comma means to insert the arg using a default format.
3012 Otherwise a printf format string may be included between
3013 the two escape chars. eg:
3014 %%foo, insert foo using default format
3015 %2.2f%foo, insert foo using "%2.2f" format
3016 A mismatch between the format string and the data type
3017 of "foo" is an error (which we don't know how to protect
3020 fmt
[0] = '\0'; /* assume null format string */
3021 if (promptp
[1] == gdb_prompt_escape
) /* double esc char */
3023 promptp
+= 2; /* skip past two escape chars. */
3027 /* extract format string from between two esc chars */
3031 fmt
[i
++] = *promptp
++; /* copy format string */
3033 while (i
< sizeof (fmt
) - 1 &&
3034 *promptp
!= gdb_prompt_escape
&&
3037 if (*promptp
!= gdb_prompt_escape
)
3038 error ("Syntax error at prompt position %d",
3039 promptp
- local_prompt
);
3042 promptp
++; /* skip second escape char */
3043 fmt
[i
++] = '\0'; /* terminate the format string */
3047 arg_val
= parse_to_comma_and_eval (&promptp
);
3048 if (*promptp
== ',')
3049 promptp
++; /* skip past the comma */
3050 arg_type
= check_typedef (VALUE_TYPE (arg_val
));
3051 switch (TYPE_CODE (arg_type
))
3053 case TYPE_CODE_ARRAY
:
3054 elt_type
= check_typedef (TYPE_TARGET_TYPE (arg_type
));
3055 if (TYPE_LENGTH (arg_type
) > 0 &&
3056 TYPE_LENGTH (elt_type
) == 1 &&
3057 TYPE_CODE (elt_type
) == TYPE_CODE_INT
)
3059 int len
= TYPE_LENGTH (arg_type
);
3061 if (VALUE_LAZY (arg_val
))
3062 value_fetch_lazy (arg_val
);
3063 tmp
= VALUE_CONTENTS (arg_val
);
3065 if (len
> available
)
3066 len
= available
; /* overflow protect */
3068 /* FIXME: how to protect GDB from crashing
3069 from bad user-supplied format string? */
3071 sprintf (outp
, fmt
, tmp
);
3073 strncpy (outp
, tmp
, len
);
3078 elt_type
= check_typedef (TYPE_TARGET_TYPE (arg_type
));
3079 addrval
= value_as_pointer (arg_val
);
3081 if (TYPE_LENGTH (elt_type
) == 1 &&
3082 TYPE_CODE (elt_type
) == TYPE_CODE_INT
&&
3085 /* display it as a string */
3086 char *default_fmt
= "%s";
3090 /* Limiting the number of bytes that the following call
3091 will read protects us from sprintf overflow later. */
3092 i
= target_read_string (addrval
, /* src */
3094 available
, /* len */
3096 if (err
) /* read failed */
3097 error ("%s on target_read", safe_strerror (err
));
3099 tmp
[i
] = '\0'; /* force-terminate string */
3100 /* FIXME: how to protect GDB from crashing
3101 from bad user-supplied format string? */
3102 sprintf (outp
, fmt
[0] == 0 ? default_fmt
: fmt
,
3108 /* display it as a pointer */
3109 char *default_fmt
= "0x%x";
3111 /* FIXME: how to protect GDB from crashing
3112 from bad user-supplied format string? */
3113 if (available
>= 16 /*? */ ) /* overflow protect */
3114 sprintf (outp
, fmt
[0] == 0 ? default_fmt
: fmt
,
3120 char *default_fmt
= "%g";
3122 doubleval
= value_as_double (arg_val
);
3123 /* FIXME: how to protect GDB from crashing
3124 from bad user-supplied format string? */
3125 if (available
>= 16 /*? */ ) /* overflow protect */
3126 sprintf (outp
, fmt
[0] == 0 ? default_fmt
: fmt
,
3127 (double) doubleval
);
3132 char *default_fmt
= "%d";
3134 longval
= value_as_long (arg_val
);
3135 /* FIXME: how to protect GDB from crashing
3136 from bad user-supplied format string? */
3137 if (available
>= 16 /*? */ ) /* overflow protect */
3138 sprintf (outp
, fmt
[0] == 0 ? default_fmt
: fmt
,
3142 case TYPE_CODE_BOOL
:
3144 /* no default format for bool */
3145 longval
= value_as_long (arg_val
);
3146 if (available
>= 8 /*? */ ) /* overflow protect */
3149 strcpy (outp
, "<true>");
3151 strcpy (outp
, "<false>");
3155 case TYPE_CODE_ENUM
:
3157 /* no default format for enum */
3158 longval
= value_as_long (arg_val
);
3159 len
= TYPE_NFIELDS (arg_type
);
3160 /* find enum name if possible */
3161 for (i
= 0; i
< len
; i
++)
3162 if (TYPE_FIELD_BITPOS (arg_type
, i
) == longval
)
3163 break; /* match -- end loop */
3165 if (i
< len
) /* enum name found */
3167 char *name
= TYPE_FIELD_NAME (arg_type
, i
);
3169 strncpy (outp
, name
, available
);
3170 /* in casel available < strlen (name), */
3171 outp
[available
] = '\0';
3175 if (available
>= 16 /*? */ ) /* overflow protect */
3176 sprintf (outp
, "%ld", (long) longval
);
3180 case TYPE_CODE_VOID
:
3182 break; /* void type -- no output */
3184 error ("bad data type at prompt position %d",
3185 promptp
- local_prompt
);
3188 outp
+= strlen (outp
);
3191 *outp
++ = '\0'; /* terminate prompt string */
3199 static char buf
[MAX_PROMPT_SIZE
];
3201 if (catch_errors (get_prompt_1
, buf
, "bad formatted prompt: ",
3204 return &buf
[0]; /* successful formatted prompt */
3208 /* Prompt could not be formatted. */
3212 return gdb_prompt_string
;
3220 /* ??rehrauer: I don't know why this fails, since it looks as though
3221 assignments to prompt are wrapped in calls to savestring...
3226 PROMPT (0) = savestring (s
, strlen (s
));
3228 gdb_prompt_string
= savestring (s
, strlen (s
));
3232 /* If necessary, make the user confirm that we should quit. Return
3233 non-zero if we should quit, zero if we shouldn't. */
3238 if (inferior_pid
!= 0 && target_has_execution
)
3242 /* This is something of a hack. But there's no reliable way to
3243 see if a GUI is running. The `use_windows' variable doesn't
3246 s
= "A debugging session is active.\nDo you still want to close the debugger?";
3247 else if (attach_flag
)
3248 s
= "The program is running. Quit anyway (and detach it)? ";
3250 s
= "The program is running. Exit anyway? ";
3259 /* Quit without asking for confirmation. */
3262 quit_force (args
, from_tty
)
3268 /* An optional expression may be used to cause gdb to terminate with the
3269 value of that expression. */
3272 value_ptr val
= parse_and_eval (args
);
3274 exit_code
= (int) value_as_long (val
);
3277 if (inferior_pid
!= 0 && target_has_execution
)
3280 target_detach (args
, from_tty
);
3285 /* UDI wants this, to kill the TIP. */
3288 /* Save the history information if it is appropriate to do so. */
3289 if (write_history_p
&& history_filename
)
3290 write_history (history_filename
);
3292 do_final_cleanups (ALL_CLEANUPS
); /* Do any final cleanups before exiting */
3295 /* tuiDo((TuiOpaqueFuncPtr)tuiCleanUp); */
3296 /* The above does not need to be inside a tuiDo(), since
3297 * it is not manipulating the curses screen, but rather,
3298 * it is tearing it down.
3307 /* Handle the quit command. */
3310 quit_command (args
, from_tty
)
3314 if (!quit_confirm ())
3315 error ("Not confirmed.");
3316 quit_force (args
, from_tty
);
3319 /* Returns whether GDB is running on a terminal and whether the user
3320 desires that questions be asked of them on that terminal. */
3323 input_from_terminal_p ()
3325 return gdb_has_a_terminal () && (instream
== stdin
) & caution
;
3330 pwd_command (args
, from_tty
)
3335 error ("The \"pwd\" command does not take an argument: %s", args
);
3336 getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
));
3338 if (!STREQ (gdb_dirbuf
, current_directory
))
3339 printf_unfiltered ("Working directory %s\n (canonically %s).\n",
3340 current_directory
, gdb_dirbuf
);
3342 printf_unfiltered ("Working directory %s.\n", current_directory
);
3346 cd_command (dir
, from_tty
)
3351 /* Found something other than leading repetitions of "/..". */
3352 int found_real_path
;
3355 /* If the new directory is absolute, repeat is a no-op; if relative,
3356 repeat might be useful but is more likely to be a mistake. */
3360 error_no_arg ("new working directory");
3362 dir
= tilde_expand (dir
);
3363 make_cleanup (free
, dir
);
3365 if (chdir (dir
) < 0)
3366 perror_with_name (dir
);
3368 #if defined(_WIN32) || defined(__MSDOS__)
3369 /* There's too much mess with DOSish names like "d:", "d:.",
3370 "d:./foo" etc. Instead of having lots of special #ifdef'ed code,
3371 simply get the canonicalized name of the current directory. */
3372 dir
= getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
));
3376 if (SLASH_P (dir
[len
-1]))
3378 /* Remove the trailing slash unless this is a root directory
3379 (including a drive letter on non-Unix systems). */
3380 if (!(len
== 1) /* "/" */
3381 #if defined(_WIN32) || defined(__MSDOS__)
3382 && !(!SLASH_P (*dir
) && ROOTED_P (dir
) && len
<= 3) /* "d:/" */
3388 dir
= savestring (dir
, len
);
3390 current_directory
= dir
;
3393 if (SLASH_P (current_directory
[strlen (current_directory
) - 1]))
3394 current_directory
= concat (current_directory
, dir
, NULL
);
3396 current_directory
= concat (current_directory
, SLASH_STRING
, dir
, NULL
);
3400 /* Now simplify any occurrences of `.' and `..' in the pathname. */
3402 found_real_path
= 0;
3403 for (p
= current_directory
; *p
;)
3405 if (SLASH_P (p
[0]) && p
[1] == '.' && (p
[2] == 0 || SLASH_P (p
[2])))
3407 else if (SLASH_P (p
[0]) && p
[1] == '.' && p
[2] == '.'
3408 && (p
[3] == 0 || SLASH_P (p
[3])))
3410 if (found_real_path
)
3412 /* Search backwards for the directory just before the "/.."
3413 and obliterate it and the "/..". */
3415 while (q
!= current_directory
&& !SLASH_P (q
[-1]))
3418 if (q
== current_directory
)
3419 /* current_directory is
3420 a relative pathname ("can't happen"--leave it alone). */
3424 strcpy (q
- 1, p
+ 3);
3429 /* We are dealing with leading repetitions of "/..", for example
3430 "/../..", which is the Mach super-root. */
3435 found_real_path
= 1;
3440 forget_cached_source_info ();
3443 pwd_command ((char *) 0, 1);
3446 struct source_cleanup_lines_args
3450 char *old_pre_error
;
3451 char *old_error_pre_print
;
3455 source_cleanup_lines (args
)
3458 struct source_cleanup_lines_args
*p
=
3459 (struct source_cleanup_lines_args
*) args
;
3460 source_line_number
= p
->old_line
;
3461 source_file_name
= p
->old_file
;
3462 source_pre_error
= p
->old_pre_error
;
3463 error_pre_print
= p
->old_error_pre_print
;
3468 source_command (args
, from_tty
)
3473 struct cleanup
*old_cleanups
;
3475 struct source_cleanup_lines_args old_lines
;
3480 error ("source command requires pathname of file to source.");
3483 file
= tilde_expand (file
);
3484 old_cleanups
= make_cleanup (free
, file
);
3486 stream
= fopen (file
, FOPEN_RT
);
3490 perror_with_name (file
);
3495 make_cleanup ((make_cleanup_func
) fclose
, stream
);
3497 old_lines
.old_line
= source_line_number
;
3498 old_lines
.old_file
= source_file_name
;
3499 old_lines
.old_pre_error
= source_pre_error
;
3500 old_lines
.old_error_pre_print
= error_pre_print
;
3501 make_cleanup (source_cleanup_lines
, &old_lines
);
3502 source_line_number
= 0;
3503 source_file_name
= file
;
3504 source_pre_error
= error_pre_print
== NULL
? "" : error_pre_print
;
3505 source_pre_error
= savestring (source_pre_error
, strlen (source_pre_error
));
3506 make_cleanup (free
, source_pre_error
);
3507 /* This will get set every time we read a line. So it won't stay "" for
3509 error_pre_print
= "";
3511 needed_length
= strlen (source_file_name
) + strlen (source_pre_error
) + 80;
3512 if (source_error_allocated
< needed_length
)
3514 source_error_allocated
*= 2;
3515 if (source_error_allocated
< needed_length
)
3516 source_error_allocated
= needed_length
;
3517 if (source_error
== NULL
)
3518 source_error
= xmalloc (source_error_allocated
);
3520 source_error
= xrealloc (source_error
, source_error_allocated
);
3523 read_command_file (stream
);
3525 do_cleanups (old_cleanups
);
3530 echo_command (text
, from_tty
)
3538 while ((c
= *p
++) != '\0')
3542 /* \ at end of argument is used after spaces
3543 so they won't be lost. */
3547 c
= parse_escape (&p
);
3549 printf_filtered ("%c", c
);
3552 printf_filtered ("%c", c
);
3555 /* Force this output to appear now. */
3557 gdb_flush (gdb_stdout
);
3562 dont_repeat_command (ignored
, from_tty
)
3566 *line
= 0; /* Can't call dont_repeat here because we're not
3567 necessarily reading from stdin. */
3570 /* Functions to manipulate command line editing control variables. */
3572 /* Number of commands to print in each call to show_commands. */
3573 #define Hist_print 10
3575 show_commands (args
, from_tty
)
3579 /* Index for history commands. Relative to history_base. */
3582 /* Number of the history entry which we are planning to display next.
3583 Relative to history_base. */
3586 /* The first command in the history which doesn't exist (i.e. one more
3587 than the number of the last command). Relative to history_base. */
3590 extern HIST_ENTRY
*history_get
PARAMS ((int));
3592 /* Print out some of the commands from the command history. */
3593 /* First determine the length of the history list. */
3594 hist_len
= history_size
;
3595 for (offset
= 0; offset
< history_size
; offset
++)
3597 if (!history_get (history_base
+ offset
))
3606 if (args
[0] == '+' && args
[1] == '\0')
3607 /* "info editing +" should print from the stored position. */
3610 /* "info editing <exp>" should print around command number <exp>. */
3611 num
= (parse_and_eval_address (args
) - history_base
) - Hist_print
/ 2;
3613 /* "show commands" means print the last Hist_print commands. */
3616 num
= hist_len
- Hist_print
;
3622 /* If there are at least Hist_print commands, we want to display the last
3623 Hist_print rather than, say, the last 6. */
3624 if (hist_len
- num
< Hist_print
)
3626 num
= hist_len
- Hist_print
;
3631 for (offset
= num
; offset
< num
+ Hist_print
&& offset
< hist_len
; offset
++)
3633 printf_filtered ("%5d %s\n", history_base
+ offset
,
3634 (history_get (history_base
+ offset
))->line
);
3637 /* The next command we want to display is the next one that we haven't
3641 /* If the user repeats this command with return, it should do what
3642 "show commands +" does. This is unnecessary if arg is null,
3643 because "show commands +" is not useful after "show commands". */
3644 if (from_tty
&& args
)
3651 /* Called by do_setshow_command. */
3654 set_history_size_command (args
, from_tty
, c
)
3657 struct cmd_list_element
*c
;
3659 if (history_size
== INT_MAX
)
3660 unstifle_history ();
3661 else if (history_size
>= 0)
3662 stifle_history (history_size
);
3665 history_size
= INT_MAX
;
3666 error ("History size must be non-negative");
3672 set_history (args
, from_tty
)
3676 printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n");
3677 help_list (sethistlist
, "set history ", -1, gdb_stdout
);
3682 show_history (args
, from_tty
)
3686 cmd_show_list (showhistlist
, from_tty
, "");
3689 int info_verbose
= 0; /* Default verbose msgs off */
3691 /* Called by do_setshow_command. An elaborate joke. */
3694 set_verbose (args
, from_tty
, c
)
3697 struct cmd_list_element
*c
;
3699 char *cmdname
= "verbose";
3700 struct cmd_list_element
*showcmd
;
3702 showcmd
= lookup_cmd_1 (&cmdname
, showlist
, NULL
, 1);
3706 c
->doc
= "Set verbose printing of informational messages.";
3707 showcmd
->doc
= "Show verbose printing of informational messages.";
3711 c
->doc
= "Set verbosity.";
3712 showcmd
->doc
= "Show verbosity.";
3717 float_handler (signo
)
3720 /* This message is based on ANSI C, section 4.7. Note that integer
3721 divide by zero causes this, so "float" is a misnomer. */
3722 signal (SIGFPE
, float_handler
);
3723 error ("Erroneous arithmetic operation.");
3737 enablebreaklist
= NULL
;
3742 showhistlist
= NULL
;
3743 unsethistlist
= NULL
;
3744 maintenancelist
= NULL
;
3745 maintenanceinfolist
= NULL
;
3746 maintenanceprintlist
= NULL
;
3747 setprintlist
= NULL
;
3748 showprintlist
= NULL
;
3749 setchecklist
= NULL
;
3750 showchecklist
= NULL
;
3753 /* Init the history buffer. Note that we are called after the init file(s)
3754 * have been read so that the user can change the history file via his
3755 * .gdbinit file (for instance). The GDBHISTFILE environment variable
3756 * overrides all of this.
3764 tmpenv
= getenv ("HISTSIZE");
3766 history_size
= atoi (tmpenv
);
3767 else if (!history_size
)
3770 stifle_history (history_size
);
3772 tmpenv
= getenv ("GDBHISTFILE");
3774 history_filename
= savestring (tmpenv
, strlen (tmpenv
));
3775 else if (!history_filename
)
3777 /* We include the current directory so that if the user changes
3778 directories the file written will be the same as the one
3781 /* No leading dots in file names are allowed on MSDOS. */
3782 history_filename
= concat (current_directory
, "/_gdb_history", NULL
);
3784 history_filename
= concat (current_directory
, "/.gdb_history", NULL
);
3787 read_history (history_filename
);
3793 struct cmd_list_element
*c
;
3795 /* If we are running the asynchronous version,
3796 we initialize the prompts differently. */
3799 gdb_prompt_string
= savestring (DEFAULT_PROMPT
, strlen (DEFAULT_PROMPT
));
3803 /* initialize the prompt stack to a simple "(gdb) " prompt or to
3804 whatever the DEFAULT_PROMPT is. */
3805 the_prompts
.top
= 0;
3807 PROMPT (0) = savestring (DEFAULT_PROMPT
, strlen (DEFAULT_PROMPT
));
3809 /* Set things up for annotation_level > 1, if the user ever decides
3811 async_annotation_suffix
= "prompt";
3812 /* Set the variable associated with the setshow prompt command. */
3813 new_async_prompt
= savestring (PROMPT (0), strlen (PROMPT (0)));
3815 gdb_prompt_escape
= 0; /* default to none. */
3817 /* Set the important stuff up for command editing. */
3818 command_editing_p
= 1;
3819 history_expansion_p
= 0;
3820 write_history_p
= 0;
3822 /* Setup important stuff for command line editing. */
3823 rl_completion_entry_function
= (int (*)()) readline_line_completion_function
;
3824 rl_completer_word_break_characters
= gdb_completer_word_break_characters
;
3825 rl_completer_quote_characters
= gdb_completer_quote_characters
;
3826 rl_readline_name
= "gdb";
3828 /* Define the classes of commands.
3829 They will appear in the help list in the reverse of this order. */
3831 add_cmd ("internals", class_maintenance
, NO_FUNCTION
,
3832 "Maintenance commands.\n\
3833 Some gdb commands are provided just for use by gdb maintainers.\n\
3834 These commands are subject to frequent change, and may not be as\n\
3835 well documented as user commands.",
3837 add_cmd ("obscure", class_obscure
, NO_FUNCTION
, "Obscure features.", &cmdlist
);
3838 add_cmd ("aliases", class_alias
, NO_FUNCTION
, "Aliases of other commands.", &cmdlist
);
3839 add_cmd ("user-defined", class_user
, NO_FUNCTION
, "User-defined commands.\n\
3840 The commands in this class are those defined by the user.\n\
3841 Use the \"define\" command to define a command.", &cmdlist
);
3842 add_cmd ("support", class_support
, NO_FUNCTION
, "Support facilities.", &cmdlist
);
3844 add_cmd ("status", class_info
, NO_FUNCTION
, "Status inquiries.", &cmdlist
);
3845 add_cmd ("files", class_files
, NO_FUNCTION
, "Specifying and examining files.", &cmdlist
);
3846 add_cmd ("breakpoints", class_breakpoint
, NO_FUNCTION
, "Making program stop at certain points.", &cmdlist
);
3847 add_cmd ("data", class_vars
, NO_FUNCTION
, "Examining data.", &cmdlist
);
3848 add_cmd ("stack", class_stack
, NO_FUNCTION
, "Examining the stack.\n\
3849 The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\
3850 counting from zero for the innermost (currently executing) frame.\n\n\
3851 At any time gdb identifies one frame as the \"selected\" frame.\n\
3852 Variable lookups are done with respect to the selected frame.\n\
3853 When the program being debugged stops, gdb selects the innermost frame.\n\
3854 The commands below can be used to select other frames by number or address.",
3856 add_cmd ("running", class_run
, NO_FUNCTION
, "Running the program.", &cmdlist
);
3858 add_com ("pwd", class_files
, pwd_command
,
3859 "Print working directory. This is used for your program as well.");
3860 c
= add_cmd ("cd", class_files
, cd_command
,
3861 "Set working directory to DIR for debugger and program being debugged.\n\
3862 The change does not take effect for the program being debugged\n\
3863 until the next time it is started.", &cmdlist
);
3864 c
->completer
= filename_completer
;
3866 /* The set prompt command is different depending whether or not the
3867 async version is run. NOTE: this difference is going to
3868 disappear as we make the event loop be the default engine of
3873 (add_set_cmd ("prompt", class_support
, var_string
,
3874 (char *) &gdb_prompt_string
, "Set gdb's prompt",
3880 c
= add_set_cmd ("prompt", class_support
, var_string
,
3881 (char *) &new_async_prompt
, "Set gdb's prompt",
3883 add_show_from_set (c
, &showlist
);
3884 c
->function
.sfunc
= set_async_prompt
;
3888 (add_set_cmd ("prompt-escape-char", class_support
, var_zinteger
,
3889 (char *) &gdb_prompt_escape
,
3890 "Set escape character for formatting of gdb's prompt",
3894 add_com ("echo", class_support
, echo_command
,
3895 "Print a constant string. Give string as argument.\n\
3896 C escape sequences may be used in the argument.\n\
3897 No newline is added at the end of the argument;\n\
3898 use \"\\n\" if you want a newline to be printed.\n\
3899 Since leading and trailing whitespace are ignored in command arguments,\n\
3900 if you want to print some you must use \"\\\" before leading whitespace\n\
3901 to be printed or after trailing whitespace.");
3902 add_com ("document", class_support
, document_command
,
3903 "Document a user-defined command.\n\
3904 Give command name as argument. Give documentation on following lines.\n\
3905 End with a line of just \"end\".");
3906 add_com ("define", class_support
, define_command
,
3907 "Define a new command name. Command name is argument.\n\
3908 Definition appears on following lines, one command per line.\n\
3909 End with a line of just \"end\".\n\
3910 Use the \"document\" command to give documentation for the new command.\n\
3911 Commands defined in this way may have up to ten arguments.");
3914 c
= add_cmd ("source", class_support
, source_command
,
3915 "Read commands from a file named FILE.\n\
3916 Note that the file \"" GDBINIT_FILENAME
"\" is read automatically in this way\n\
3917 when gdb is started.", &cmdlist
);
3919 /* Punt file name, we can't help it easily. */
3920 c
= add_cmd ("source", class_support
, source_command
,
3921 "Read commands from a file named FILE.\n\
3922 Note that the file \".gdbinit\" is read automatically in this way\n\
3923 when gdb is started.", &cmdlist
);
3925 c
->completer
= filename_completer
;
3927 add_com ("quit", class_support
, quit_command
, "Exit gdb.");
3928 add_com ("help", class_support
, help_command
, "Print list of commands.");
3929 add_com_alias ("q", "quit", class_support
, 1);
3930 add_com_alias ("h", "help", class_support
, 1);
3932 add_com ("dont-repeat", class_support
, dont_repeat_command
, "Don't repeat this command.\n\
3933 Primarily used inside of user-defined commands that should not be repeated when\n\
3936 c
= add_set_cmd ("verbose", class_support
, var_boolean
, (char *) &info_verbose
,
3939 add_show_from_set (c
, &showlist
);
3940 c
->function
.sfunc
= set_verbose
;
3941 set_verbose (NULL
, 0, c
);
3943 /* The set editing command is different depending whether or not the
3944 async version is run. NOTE: this difference is going to disappear
3945 as we make the event loop be the default engine of gdb. */
3949 (add_set_cmd ("editing", class_support
, var_boolean
, (char *) &command_editing_p
,
3950 "Set editing of command lines as they are typed.\n\
3951 Use \"on\" to enable the editing, and \"off\" to disable it.\n\
3952 Without an argument, command line editing is enabled. To edit, use\n\
3953 EMACS-like or VI-like commands like control-P or ESC.", &setlist
),
3958 c
= add_set_cmd ("editing", class_support
, var_boolean
, (char *) &async_command_editing_p
,
3959 "Set editing of command lines as they are typed.\n\
3960 Use \"on\" to enable the editing, and \"off\" to disable it.\n\
3961 Without an argument, command line editing is enabled. To edit, use\n\
3962 EMACS-like or VI-like commands like control-P or ESC.", &setlist
);
3964 add_show_from_set (c
, &showlist
);
3965 c
->function
.sfunc
= set_async_editing_command
;
3968 add_prefix_cmd ("history", class_support
, set_history
,
3969 "Generic command for setting command history parameters.",
3970 &sethistlist
, "set history ", 0, &setlist
);
3971 add_prefix_cmd ("history", class_support
, show_history
,
3972 "Generic command for showing command history parameters.",
3973 &showhistlist
, "show history ", 0, &showlist
);
3976 (add_set_cmd ("expansion", no_class
, var_boolean
, (char *) &history_expansion_p
,
3977 "Set history expansion on command input.\n\
3978 Without an argument, history expansion is enabled.", &sethistlist
),
3982 (add_set_cmd ("save", no_class
, var_boolean
, (char *) &write_history_p
,
3983 "Set saving of the history record on exit.\n\
3984 Use \"on\" to enable the saving, and \"off\" to disable it.\n\
3985 Without an argument, saving is enabled.", &sethistlist
),
3988 c
= add_set_cmd ("size", no_class
, var_integer
, (char *) &history_size
,
3989 "Set the size of the command history, \n\
3990 ie. the number of previous commands to keep a record of.", &sethistlist
);
3991 add_show_from_set (c
, &showhistlist
);
3992 c
->function
.sfunc
= set_history_size_command
;
3995 (add_set_cmd ("filename", no_class
, var_filename
, (char *) &history_filename
,
3996 "Set the filename in which to record the command history\n\
3997 (the list of previous commands of which a record is kept).", &sethistlist
),
4001 (add_set_cmd ("confirm", class_support
, var_boolean
,
4003 "Set whether to confirm potentially dangerous operations.",
4007 add_prefix_cmd ("info", class_info
, info_command
,
4008 "Generic command for showing things about the program being debugged.",
4009 &infolist
, "info ", 0, &cmdlist
);
4010 add_com_alias ("i", "info", class_info
, 1);
4012 add_com ("complete", class_obscure
, complete_command
,
4013 "List the completions for the rest of the line as a command.");
4015 add_prefix_cmd ("show", class_info
, show_command
,
4016 "Generic command for showing things about the debugger.",
4017 &showlist
, "show ", 0, &cmdlist
);
4018 /* Another way to get at the same thing. */
4019 add_info ("set", show_command
, "Show all GDB settings.");
4021 add_cmd ("commands", no_class
, show_commands
,
4022 "Show the history of commands you typed.\n\
4023 You can supply a command number to start with, or a `+' to start after\n\
4024 the previous command number shown.",
4027 add_cmd ("version", no_class
, show_version
,
4028 "Show what version of GDB this is.", &showlist
);
4030 add_com ("while", class_support
, while_command
,
4031 "Execute nested commands WHILE the conditional expression is non zero.\n\
4032 The conditional expression must follow the word `while' and must in turn be\n\
4033 followed by a new line. The nested commands must be entered one per line,\n\
4034 and should be terminated by the word `end'.");
4036 add_com ("if", class_support
, if_command
,
4037 "Execute nested commands once IF the conditional expression is non zero.\n\
4038 The conditional expression must follow the word `if' and must in turn be\n\
4039 followed by a new line. The nested commands must be entered one per line,\n\
4040 and should be terminated by the word 'else' or `end'. If an else clause\n\
4041 is used, the same rules apply to its nested commands as to the first ones.");
4043 /* If target is open when baud changes, it doesn't take effect until the
4044 next open (I think, not sure). */
4045 add_show_from_set (add_set_cmd ("remotebaud", no_class
,
4046 var_zinteger
, (char *) &baud_rate
,
4047 "Set baud rate for remote serial I/O.\n\
4048 This value is used to set the speed of the serial port when debugging\n\
4049 using remote targets.", &setlist
),
4053 add_set_cmd ("remotedebug", no_class
, var_zinteger
, (char *) &remote_debug
,
4054 "Set debugging of remote protocol.\n\
4055 When enabled, each packet sent or received with the remote target\n\
4056 is displayed.", &setlist
),
4060 add_set_cmd ("remotetimeout", no_class
, var_integer
, (char *) &remote_timeout
,
4061 "Set timeout limit to wait for target to respond.\n\
4062 This value is used to set the time limit for gdb to wait for a response\n\
4063 from the target.", &setlist
),
4066 /* The set annotate command is different depending whether or not
4067 the async version is run. NOTE: this difference is going to
4068 disappear as we make the event loop be the default engine of
4072 c
= add_set_cmd ("annotate", class_obscure
, var_zinteger
,
4073 (char *) &annotation_level
, "Set annotation_level.\n\
4074 0 == normal; 1 == fullname (for use when running under emacs)\n\
4075 2 == output annotated suitably for use by programs that control GDB.",
4077 c
= add_show_from_set (c
, &showlist
);
4081 c
= add_set_cmd ("annotate", class_obscure
, var_zinteger
,
4082 (char *) &annotation_level
, "Set annotation_level.\n\
4083 0 == normal; 1 == fullname (for use when running under emacs)\n\
4084 2 == output annotated suitably for use by programs that control GDB.",
4086 add_show_from_set (c
, &showlist
);
4087 c
->function
.sfunc
= set_async_annotation_level
;
4092 (add_set_cmd ("exec-done-display", class_support
, var_boolean
, (char *) &exec_done_display_p
,
4093 "Set notification of completion for asynchronous execution commands.\n\
4094 Use \"on\" to enable the notification, and \"off\" to disable it.", &setlist
),