1 /* Top level stuff for GDB, the GNU debugger.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
23 #include "call-cmds.h"
28 #include "breakpoint.h"
30 #include "expression.h"
33 #include "terminal.h" /* For job_control. */
38 /* readline include files */
42 /* readline defines this. */
45 #include <sys/types.h>
47 /* What is this for? X_OK? */
55 #include <sys/param.h>
59 /* Prototypes for local functions */
61 static char * line_completion_function
PARAMS ((char *, int, char *, int));
63 static char * readline_line_completion_function
PARAMS ((char *, int));
65 static void command_loop_marker
PARAMS ((int));
67 static void while_command
PARAMS ((char *, int));
69 static void if_command
PARAMS ((char *, int));
71 static enum command_control_type
72 execute_control_command
PARAMS ((struct command_line
*));
74 static struct command_line
*
75 build_command_line
PARAMS ((enum command_control_type
, char *));
77 static struct command_line
*
78 get_command_line
PARAMS ((enum command_control_type
, char *));
80 static void realloc_body_list
PARAMS ((struct command_line
*, int));
82 static enum misc_command_type read_next_line
PARAMS ((struct command_line
**));
84 static enum command_control_type
85 recurse_read_control_structure
PARAMS ((struct command_line
*));
87 static void init_main
PARAMS ((void));
89 static void init_cmd_lists
PARAMS ((void));
91 static void float_handler
PARAMS ((int));
93 static void init_signals
PARAMS ((void));
95 static void set_verbose
PARAMS ((char *, int, struct cmd_list_element
*));
97 #ifdef TARGET_BYTE_ORDER_SELECTABLE
99 static void set_endian
PARAMS ((char *, int));
101 static void set_endian_big
PARAMS ((char *, int));
103 static void set_endian_little
PARAMS ((char *, int));
105 static void set_endian_auto
PARAMS ((char *, int));
107 static void show_endian
PARAMS ((char *, int));
111 static void show_history
PARAMS ((char *, int));
113 static void set_history
PARAMS ((char *, int));
115 static void set_history_size_command
PARAMS ((char *, int,
116 struct cmd_list_element
*));
118 static void show_commands
PARAMS ((char *, int));
120 static void echo_command
PARAMS ((char *, int));
122 static void pwd_command
PARAMS ((char *, int));
124 static void show_version
PARAMS ((char *, int));
126 static void document_command
PARAMS ((char *, int));
128 static void define_command
PARAMS ((char *, int));
130 static void validate_comname
PARAMS ((char *));
132 static void help_command
PARAMS ((char *, int));
134 static void show_command
PARAMS ((char *, int));
136 static void info_command
PARAMS ((char *, int));
138 static void complete_command
PARAMS ((char *, int));
140 static void do_nothing
PARAMS ((int));
142 static int quit_cover
PARAMS ((char *));
144 static void disconnect
PARAMS ((int));
146 static void source_cleanup
PARAMS ((FILE *));
148 /* If this definition isn't overridden by the header files, assume
149 that isatty and fileno exist on this system. */
151 #define ISATTY(FP) (isatty (fileno (FP)))
154 /* Initialization file name for gdb. This is overridden in some configs. */
156 #ifndef GDBINIT_FILENAME
157 #define GDBINIT_FILENAME ".gdbinit"
159 char gdbinit
[] = GDBINIT_FILENAME
;
160 int inhibit_gdbinit
= 0;
162 /* Disable windows if non-zero */
164 int use_windows
= 0; /* Defaults to off for now */
166 /* Version number of GDB, as a string. */
168 extern char *version
;
170 /* Canonical host name as a string. */
172 extern char *host_name
;
174 /* Canonical target name as a string. */
176 extern char *target_name
;
178 extern char lang_frame_mismatch_warn
[]; /* language.c */
180 /* Flag for whether we want all the "from_tty" gubbish printed. */
182 int caution
= 1; /* Default is yes, sigh. */
185 * Define all cmd_list_element's
188 /* Chain containing all defined commands. */
190 struct cmd_list_element
*cmdlist
;
192 /* Chain containing all defined info subcommands. */
194 struct cmd_list_element
*infolist
;
196 /* Chain containing all defined enable subcommands. */
198 struct cmd_list_element
*enablelist
;
200 /* Chain containing all defined disable subcommands. */
202 struct cmd_list_element
*disablelist
;
204 /* Chain containing all defined delete subcommands. */
206 struct cmd_list_element
*deletelist
;
208 /* Chain containing all defined "enable breakpoint" subcommands. */
210 struct cmd_list_element
*enablebreaklist
;
212 /* Chain containing all defined set subcommands */
214 struct cmd_list_element
*setlist
;
216 /* Chain containing all defined unset subcommands */
218 struct cmd_list_element
*unsetlist
;
220 /* Chain containing all defined show subcommands. */
222 struct cmd_list_element
*showlist
;
224 #ifdef TARGET_BYTE_ORDER_SELECTABLE
225 /* Chain containing the \"set endian\" commands. */
227 struct cmd_list_element
*endianlist
;
230 /* Chain containing all defined \"set history\". */
232 struct cmd_list_element
*sethistlist
;
234 /* Chain containing all defined \"show history\". */
236 struct cmd_list_element
*showhistlist
;
238 /* Chain containing all defined \"unset history\". */
240 struct cmd_list_element
*unsethistlist
;
242 /* Chain containing all defined maintenance subcommands. */
245 struct cmd_list_element
*maintenancelist
;
248 /* Chain containing all defined "maintenance info" subcommands. */
251 struct cmd_list_element
*maintenanceinfolist
;
254 /* Chain containing all defined "maintenance print" subcommands. */
257 struct cmd_list_element
*maintenanceprintlist
;
260 struct cmd_list_element
*setprintlist
;
262 struct cmd_list_element
*showprintlist
;
264 struct cmd_list_element
*setchecklist
;
266 struct cmd_list_element
*showchecklist
;
268 /* stdio stream that command input is being read from. Set to stdin normally.
269 Set by source_command to the file we are sourcing. Set to NULL if we are
270 executing a user-defined command. */
274 /* Current working directory. */
276 char *current_directory
;
278 /* The directory name is actually stored here (usually). */
279 char gdb_dirbuf
[1024];
281 /* Function to call before reading a command, if nonzero.
282 The function receives two args: an input stream,
283 and a prompt string. */
285 void (*window_hook
) PARAMS ((FILE *, char *));
290 /* gdb prints this when reading a command interactively */
293 /* Buffer used for reading command lines, and the size
294 allocated for it so far. */
299 /* Nonzero if the current command is modified by "server ". This
300 affects things like recording into the command history, comamnds
301 repeating on RETURN, etc. This is so a user interface (emacs, GUI,
302 whatever) can issue its own commands and also send along commands
303 from the user, and have the user not notice that the user interface
304 is issuing commands too. */
307 /* Baud rate specified for talking to serial target systems. Default
308 is left as -1, so targets can choose their own defaults. */
309 /* FIXME: This means that "show remotebaud" and gr_files_info can print -1
310 or (unsigned int)-1. This is a Bad User Interface. */
314 /* Non-zero tells remote* modules to output debugging info. */
316 int remote_debug
= 0;
318 /* Level of control structure. */
319 static int control_level
;
321 /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */
325 #define STOP_SIGNAL SIGTSTP
326 static void stop_sig
PARAMS ((int));
330 /* Some System V have job control but not sigsetmask(). */
331 #if !defined (HAVE_SIGSETMASK)
333 #define HAVE_SIGSETMASK 1
335 #define HAVE_SIGSETMASK 0
339 #if 0 == (HAVE_SIGSETMASK)
340 #define sigsetmask(n)
343 /* Hooks for alternate command interfaces. */
345 /* Called after most modules have been initialized, but before taking users
348 void (*init_ui_hook
) PARAMS ((void));
350 /* Called instead of command_loop at top level. Can be invoked via
351 return_to_top_level. */
353 void (*command_loop_hook
) PARAMS ((void));
355 /* Called instead of fputs for all output. */
357 void (*fputs_unfiltered_hook
) PARAMS ((const char *linebuffer
, FILE *stream
));
359 /* Called from print_frame_info to list the line we stopped in. */
361 void (*print_frame_info_listing_hook
) PARAMS ((struct symtab
*s
, int line
,
362 int stopline
, int noerror
));
363 /* Replaces most of query. */
365 int (*query_hook
) PARAMS (());
367 /* Called from gdb_flush to flush output. */
369 void (*flush_hook
) PARAMS ((FILE *stream
));
371 /* Called as appropriate to notify the interface of the specified breakpoint
374 void (*create_breakpoint_hook
) PARAMS ((struct breakpoint
*bpt
));
375 void (*delete_breakpoint_hook
) PARAMS ((struct breakpoint
*bpt
));
376 void (*enable_breakpoint_hook
) PARAMS ((struct breakpoint
*bpt
));
377 void (*disable_breakpoint_hook
) PARAMS ((struct breakpoint
*bpt
));
379 /* Called during long calculations to allow GUI to repair window damage, and to
380 check for stop buttons, etc... */
382 void (*interactive_hook
) PARAMS ((void));
384 /* Called when going to wait for the target. Usually allows the GUI to run
385 while waiting for target events. */
387 int (*target_wait_hook
) PARAMS ((int pid
, struct target_waitstatus
*status
));
389 /* Used by UI as a wrapper around command execution. May do various things
390 like enabling/disabling buttons, etc... */
392 void (*call_command_hook
) PARAMS ((struct cmd_list_element
*c
, char *cmd
,
395 /* Takes control from error (). Typically used to prevent longjmps out of the
396 middle of the GUI. Usually used in conjunction with a catch routine. */
398 NORETURN
void (*error_hook
) PARAMS (());
401 /* Where to go for return_to_top_level (RETURN_ERROR). */
402 jmp_buf error_return
;
403 /* Where to go for return_to_top_level (RETURN_QUIT). */
406 /* Return for reason REASON. This generally gets back to the command
407 loop, but can be caught via catch_errors. */
410 return_to_top_level (reason
)
411 enum return_reason reason
;
416 /* Perhaps it would be cleaner to do this via the cleanup chain (not sure
417 I can think of a reason why that is vital, though). */
418 bpstat_clear_actions(stop_bpstat
); /* Clear queued breakpoint commands */
420 disable_current_display ();
421 do_cleanups (ALL_CLEANUPS
);
423 if (annotation_level
> 1)
434 (NORETURN
void) longjmp
435 (reason
== RETURN_ERROR
? error_return
: quit_return
, 1);
438 /* Call FUNC with arg ARGS, catching any errors. If there is no
439 error, return the value returned by FUNC. If there is an error,
440 print ERRSTRING, print the specific error message, then return
443 Must not be called with immediate_quit in effect (bad things might
444 happen, say we got a signal in the middle of a memcpy to quit_return).
445 This is an OK restriction; with very few exceptions immediate_quit can
446 be replaced by judicious use of QUIT.
448 MASK specifies what to catch; it is normally set to
449 RETURN_MASK_ALL, if for no other reason than that the code which
450 calls catch_errors might not be set up to deal with a quit which
451 isn't caught. But if the code can deal with it, it generally
452 should be RETURN_MASK_ERROR, unless for some reason it is more
453 useful to abort only the portion of the operation inside the
454 catch_errors. Note that quit should return to the command line
455 fairly quickly, even if some further processing is being done. */
458 catch_errors (func
, args
, errstring
, mask
)
459 int (*func
) PARAMS ((char *));
468 struct cleanup
*saved_cleanup_chain
;
469 char *saved_error_pre_print
;
471 saved_cleanup_chain
= save_cleanups ();
472 saved_error_pre_print
= error_pre_print
;
474 if (mask
& RETURN_MASK_ERROR
)
475 memcpy ((char *)saved_error
, (char *)error_return
, sizeof (jmp_buf));
476 if (mask
& RETURN_MASK_QUIT
)
477 memcpy (saved_quit
, quit_return
, sizeof (jmp_buf));
478 error_pre_print
= errstring
;
480 if (setjmp (tmp_jmp
) == 0)
482 if (mask
& RETURN_MASK_ERROR
)
483 memcpy (error_return
, tmp_jmp
, sizeof (jmp_buf));
484 if (mask
& RETURN_MASK_QUIT
)
485 memcpy (quit_return
, tmp_jmp
, sizeof (jmp_buf));
486 val
= (*func
) (args
);
491 restore_cleanups (saved_cleanup_chain
);
493 error_pre_print
= saved_error_pre_print
;
494 if (mask
& RETURN_MASK_ERROR
)
495 memcpy (error_return
, saved_error
, sizeof (jmp_buf));
496 if (mask
& RETURN_MASK_QUIT
)
497 memcpy (quit_return
, saved_quit
, sizeof (jmp_buf));
501 /* Handler for SIGHUP. */
507 catch_errors (quit_cover
, NULL
,
508 "Could not kill the program being debugged", RETURN_MASK_ALL
);
509 signal (SIGHUP
, SIG_DFL
);
510 kill (getpid (), SIGHUP
);
513 /* Just a little helper function for disconnect(). */
519 caution
= 0; /* Throw caution to the wind -- we're exiting.
520 This prevents asking the user dumb questions. */
521 quit_command((char *)0, 0);
525 /* Line number we are currently in in a file which is being sourced. */
526 static int source_line_number
;
528 /* Name of the file we are sourcing. */
529 static char *source_file_name
;
531 /* Buffer containing the error_pre_print used by the source stuff.
533 static char *source_error
;
534 static int source_error_allocated
;
536 /* Something to glom on to the start of error_pre_print if source_file_name
538 static char *source_pre_error
;
540 /* Clean up on error during a "source" command (or execution of a
541 user-defined command). */
544 source_cleanup (stream
)
547 /* Restore the previous input stream. */
551 /* Read commands from STREAM. */
553 read_command_file (stream
)
556 struct cleanup
*cleanups
;
558 cleanups
= make_cleanup (source_cleanup
, instream
);
561 do_cleanups (cleanups
);
564 extern void init_proc ();
566 void (*pre_init_ui_hook
) PARAMS ((void));
571 if (pre_init_ui_hook
)
574 /* Run the init function of each source file */
576 getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
));
577 current_directory
= gdb_dirbuf
;
579 init_cmd_lists (); /* This needs to be done first */
580 initialize_targets (); /* Setup target_terminal macros for utils.c */
581 initialize_utils (); /* Make errors and warnings possible */
582 initialize_all_files ();
583 init_main (); /* But that omits this file! Do it now */
588 /* We need a default language for parsing expressions, so simple things like
589 "set width 0" won't fail if no language is explicitly set in a config file
590 or implicitly set by reading an executable during startup. */
591 set_language (language_c
);
592 expected_language
= current_language
; /* don't warn about the change. */
598 /* Allocate, initialize a new command line structure for one of the
599 control commands (if/while). */
601 static struct command_line
*
602 build_command_line (type
, args
)
603 enum command_control_type type
;
606 struct command_line
*cmd
;
608 cmd
= (struct command_line
*)xmalloc (sizeof (struct command_line
));
610 cmd
->control_type
= type
;
614 = (struct command_line
**)xmalloc (sizeof (struct command_line
*)
616 memset (cmd
->body_list
, 0, sizeof (struct command_line
*) * cmd
->body_count
);
617 cmd
->line
= savestring (args
, strlen (args
));
621 /* Build and return a new command structure for the control commands
622 such as "if" and "while". */
624 static struct command_line
*
625 get_command_line (type
, arg
)
626 enum command_control_type type
;
629 struct command_line
*cmd
;
630 struct cleanup
*old_chain
= NULL
;
632 /* Allocate and build a new command line structure. */
633 cmd
= build_command_line (type
, arg
);
635 old_chain
= make_cleanup (free_command_lines
, &cmd
);
637 /* Read in the body of this command. */
638 if (recurse_read_control_structure (cmd
) == invalid_control
)
640 warning ("error reading in control structure\n");
641 do_cleanups (old_chain
);
645 discard_cleanups (old_chain
);
649 /* Execute the command in CMD. */
651 static enum command_control_type
652 execute_control_command (cmd
)
653 struct command_line
*cmd
;
655 struct expression
*expr
;
656 struct command_line
*current
;
657 struct cleanup
*old_chain
= 0;
658 struct cleanup
*tmp_chain
;
661 enum command_control_type ret
;
663 switch (cmd
->control_type
)
666 /* A simple command, execute it and return. */
667 execute_command (cmd
->line
, 0);
668 return cmd
->control_type
;
670 case continue_control
:
672 /* Return for "continue", and "break" so we can either
673 continue the loop at the top, or break out. */
674 return cmd
->control_type
;
678 /* Parse the loop control expression for the while statement. */
679 expr
= parse_expression (cmd
->line
);
680 tmp_chain
= make_cleanup (free_current_contents
, &expr
);
682 old_chain
= tmp_chain
;
684 ret
= simple_control
;
687 /* Keep iterating so long as the expression is true. */
690 /* Evaluate the expression. */
691 val
= evaluate_expression (expr
);
693 /* If the value is false, then break out of the loop. */
694 if (!value_true (val
))
697 /* Execute the body of the while statement. */
698 current
= *cmd
->body_list
;
701 ret
= execute_control_command (current
);
703 /* If we got an error, or a "break" command, then stop
705 if (ret
== invalid_control
|| ret
== break_control
)
711 /* If we got a "continue" command, then restart the loop
713 if (ret
== continue_control
)
716 /* Get the next statement. */
717 current
= current
->next
;
721 /* Reset RET so that we don't recurse the break all the way down. */
722 if (ret
== break_control
)
723 ret
= simple_control
;
730 /* Parse the conditional for the if statement. */
731 expr
= parse_expression (cmd
->line
);
732 old_chain
= make_cleanup (free_current_contents
, &expr
);
735 ret
= simple_control
;
737 /* Evaluate the conditional. */
738 val
= evaluate_expression (expr
);
740 /* Choose which arm to take commands from based on the value of the
741 conditional expression. */
742 if (value_true (val
))
743 current
= *cmd
->body_list
;
744 else if (cmd
->body_count
== 2)
745 current
= *(cmd
->body_list
+ 1);
747 /* Execute commands in the given arm. */
750 ret
= execute_control_command (current
);
752 /* If we got an error, get out. */
753 if (ret
!= simple_control
)
756 /* Get the next statement in the body. */
757 current
= current
->next
;
763 warning ("Invalid control type in command structure.");
764 return invalid_control
;
768 do_cleanups (old_chain
);
773 /* "while" command support. Executes a body of statements while the
774 loop condition is nonzero. */
777 while_command (arg
, from_tty
)
781 struct command_line
*command
= NULL
;
784 command
= get_command_line (while_control
, arg
);
789 execute_control_command (command
);
790 free_command_lines (&command
);
793 /* "if" command support. Execute either the true or false arm depending
794 on the value of the if conditional. */
797 if_command (arg
, from_tty
)
801 struct command_line
*command
= NULL
;
804 command
= get_command_line (if_control
, arg
);
809 execute_control_command (command
);
810 free_command_lines (&command
);
814 execute_user_command (c
, args
)
815 struct cmd_list_element
*c
;
818 register struct command_line
*cmdlines
;
819 struct cleanup
*old_chain
;
820 enum command_control_type ret
;
823 error ("User-defined commands cannot take arguments.");
825 cmdlines
= c
->user_commands
;
830 /* Set the instream to 0, indicating execution of a
831 user-defined function. */
832 old_chain
= make_cleanup (source_cleanup
, instream
);
833 instream
= (FILE *) 0;
836 ret
= execute_control_command (cmdlines
);
837 if (ret
!= simple_control
&& ret
!= break_control
)
839 warning ("Error in control structure.\n");
842 cmdlines
= cmdlines
->next
;
844 do_cleanups (old_chain
);
847 /* Execute the line P as a command.
848 Pass FROM_TTY as second argument to the defining function. */
851 execute_command (p
, from_tty
)
855 register struct cmd_list_element
*c
;
856 register enum language flang
;
857 static int warned
= 0;
861 /* This can happen when command_line_input hits end of file. */
865 while (*p
== ' ' || *p
== '\t') p
++;
870 c
= lookup_cmd (&p
, cmdlist
, "", 0, 1);
871 /* Pass null arg rather than an empty one. */
874 /* If this command has been hooked, run the hook first. */
876 execute_user_command (c
->hook
, (char *)0);
878 if (c
->class == class_user
)
879 execute_user_command (c
, arg
);
880 else if (c
->type
== set_cmd
|| c
->type
== show_cmd
)
881 do_setshow_command (arg
, from_tty
& caution
, c
);
882 else if (c
->function
.cfunc
== NO_FUNCTION
)
883 error ("That is not a command, just a help topic.");
884 else if (call_command_hook
)
885 call_command_hook (c
, arg
, from_tty
& caution
);
887 (*c
->function
.cfunc
) (arg
, from_tty
& caution
);
890 /* Tell the user if the language has changed (except first time). */
891 if (current_language
!= expected_language
)
893 if (language_mode
== language_mode_auto
) {
894 language_info (1); /* Print what changed. */
899 /* Warn the user if the working language does not match the
900 language of the current frame. Only warn the user if we are
901 actually running the program, i.e. there is a stack. */
902 /* FIXME: This should be cacheing the frame and only running when
903 the frame changes. */
905 if (target_has_stack
)
907 flang
= get_frame_language ();
909 && flang
!= language_unknown
910 && flang
!= current_language
->la_language
)
912 printf_filtered ("%s\n", lang_frame_mismatch_warn
);
920 command_loop_marker (foo
)
925 /* Read commands from `instream' and execute them
926 until end of file or error reading instream. */
931 struct cleanup
*old_chain
;
933 int stdin_is_tty
= ISATTY (stdin
);
934 long time_at_cmd_start
;
935 long space_at_cmd_start
;
936 extern int display_time
;
937 extern int display_space
;
939 while (!feof (instream
))
941 if (window_hook
&& instream
== stdin
)
942 (*window_hook
) (instream
, prompt
);
945 if (instream
== stdin
&& stdin_is_tty
)
946 reinitialize_more_filter ();
947 old_chain
= make_cleanup (command_loop_marker
, 0);
948 command
= command_line_input (instream
== stdin
? prompt
: (char *) NULL
,
949 instream
== stdin
, "prompt");
953 time_at_cmd_start
= get_run_time ();
957 extern char **environ
;
958 char *lim
= (char *) sbrk (0);
960 space_at_cmd_start
= (long) (lim
- (char *) &environ
);
963 execute_command (command
, instream
== stdin
);
964 /* Do any commands attached to breakpoint we stopped at. */
965 bpstat_do_actions (&stop_bpstat
);
966 do_cleanups (old_chain
);
970 long cmd_time
= get_run_time () - time_at_cmd_start
;
972 printf_unfiltered ("Command execution time: %ld.%06ld\n",
973 cmd_time
/ 1000000, cmd_time
% 1000000);
978 extern char **environ
;
979 char *lim
= (char *) sbrk (0);
980 long space_now
= lim
- (char *) &environ
;
981 long space_diff
= space_now
- space_at_cmd_start
;
983 printf_unfiltered ("Space used: %ld (%c%ld for this command)\n",
985 (space_diff
>= 0 ? '+' : '-'),
991 /* Commands call this if they do not want to be repeated by null lines. */
999 /* If we aren't reading from standard input, we are saving the last
1000 thing read from stdin in line and don't want to delete it. Null lines
1001 won't repeat here in any case. */
1002 if (instream
== stdin
)
1006 /* Read a line from the stream "instream" without command line editing.
1008 It prints PRROMPT once at the start.
1009 Action is compatible with "readline", e.g. space for the result is
1010 malloc'd and should be freed by the caller.
1012 A NULL return means end of file. */
1014 gdb_readline (prrompt
)
1019 int input_index
= 0;
1020 int result_size
= 80;
1024 /* Don't use a _filtered function here. It causes the assumed
1025 character position to be off, since the newline we read from
1026 the user is not accounted for. */
1027 fputs_unfiltered (prrompt
, gdb_stdout
);
1028 /* start-sanitize-mpw */
1030 /* Move to a new line so the entered line doesn't have a prompt
1031 on the front of it. */
1032 fputs_unfiltered ("\n", gdb_stdout
);
1034 /* end-sanitize-mpw */
1035 gdb_flush (gdb_stdout
);
1038 result
= (char *) xmalloc (result_size
);
1042 /* Read from stdin if we are executing a user defined command.
1043 This is the right thing for prompt_for_continue, at least. */
1044 c
= fgetc (instream
? instream
: stdin
);
1048 if (input_index
> 0)
1049 /* The last line does not end with a newline. Return it, and
1050 if we are called again fgetc will still return EOF and
1051 we'll return NULL then. */
1060 result
[input_index
++] = c
;
1061 while (input_index
>= result_size
)
1064 result
= (char *) xrealloc (result
, result_size
);
1068 result
[input_index
++] = '\0';
1072 /* Variables which control command line editing and history
1073 substitution. These variables are given default values at the end
1075 static int command_editing_p
;
1076 static int history_expansion_p
;
1077 static int write_history_p
;
1078 static int history_size
;
1079 static char *history_filename
;
1081 /* readline uses the word breaks for two things:
1082 (1) In figuring out where to point the TEXT parameter to the
1083 rl_completion_entry_function. Since we don't use TEXT for much,
1084 it doesn't matter a lot what the word breaks are for this purpose, but
1085 it does affect how much stuff M-? lists.
1086 (2) If one of the matches contains a word break character, readline
1087 will quote it. That's why we switch between
1088 gdb_completer_word_break_characters and
1089 gdb_completer_command_word_break_characters. I'm not sure when
1090 we need this behavior (perhaps for funky characters in C++ symbols?). */
1092 /* Variables which are necessary for fancy command line editing. */
1093 char *gdb_completer_word_break_characters
=
1094 " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
1096 /* When completing on command names, we remove '-' from the list of
1097 word break characters, since we use it in command names. If the
1098 readline library sees one in any of the current completion strings,
1099 it thinks that the string needs to be quoted and automatically supplies
1101 char *gdb_completer_command_word_break_characters
=
1102 " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,";
1104 /* Characters that can be used to quote completion strings. Note that we
1105 can't include '"' because the gdb C parser treats such quoted sequences
1107 char *gdb_completer_quote_characters
=
1110 /* Functions that are used as part of the fancy command line editing. */
1112 /* This can be used for functions which don't want to complete on symbols
1113 but don't want to complete on anything else either. */
1116 noop_completer (text
, prefix
)
1123 /* Complete on filenames. */
1125 filename_completer (text
, word
)
1129 /* From readline. */
1130 extern char *filename_completion_function ();
1131 int subsequent_name
;
1133 int return_val_used
;
1134 int return_val_alloced
;
1136 return_val_used
= 0;
1137 /* Small for testing. */
1138 return_val_alloced
= 1;
1139 return_val
= (char **) xmalloc (return_val_alloced
* sizeof (char *));
1141 subsequent_name
= 0;
1145 p
= filename_completion_function (text
, subsequent_name
);
1146 if (return_val_used
>= return_val_alloced
)
1148 return_val_alloced
*= 2;
1150 (char **) xrealloc (return_val
,
1151 return_val_alloced
* sizeof (char *));
1155 return_val
[return_val_used
++] = p
;
1158 /* Like emacs, don't complete on old versions. Especially useful
1159 in the "source" command. */
1160 if (p
[strlen (p
) - 1] == '~')
1166 /* Return exactly p. */
1167 return_val
[return_val_used
++] = p
;
1168 else if (word
> text
)
1170 /* Return some portion of p. */
1171 q
= xmalloc (strlen (p
) + 5);
1172 strcpy (q
, p
+ (word
- text
));
1173 return_val
[return_val_used
++] = q
;
1178 /* Return some of TEXT plus p. */
1179 q
= xmalloc (strlen (p
) + (text
- word
) + 5);
1180 strncpy (q
, word
, text
- word
);
1181 q
[text
- word
] = '\0';
1183 return_val
[return_val_used
++] = q
;
1187 subsequent_name
= 1;
1190 /* There is no way to do this just long enough to affect quote inserting
1191 without also affecting the next completion. This should be fixed in
1193 /* Insure that readline does the right thing
1194 with respect to inserting quotes. */
1195 rl_completer_word_break_characters
= "";
1200 /* Here are some useful test cases for completion. FIXME: These should
1201 be put in the test suite. They should be tested with both M-? and TAB.
1203 "show output-" "radix"
1204 "show output" "-radix"
1205 "p" ambiguous (commands starting with p--path, print, printf, etc.)
1206 "p " ambiguous (all symbols)
1207 "info t foo" no completions
1208 "info t " no completions
1209 "info t" ambiguous ("info target", "info terminal", etc.)
1210 "info ajksdlfk" no completions
1211 "info ajksdlfk " no completions
1213 "info " ambiguous (all info commands)
1214 "p \"a" no completions (string constant)
1215 "p 'a" ambiguous (all symbols starting with a)
1216 "p b-a" ambiguous (all symbols starting with a)
1217 "p b-" ambiguous (all symbols)
1218 "file Make" "file" (word break hard to screw up here)
1219 "file ../gdb.stabs/we" "ird" (needs to not break word at slash)
1222 /* Generate completions one by one for the completer. Each time we are
1223 called return another potential completion to the caller.
1224 line_completion just completes on commands or passes the buck to the
1225 command's completer function, the stuff specific to symbol completion
1226 is in make_symbol_completion_list.
1228 TEXT is the caller's idea of the "word" we are looking at.
1230 MATCHES is the number of matches that have currently been collected from
1231 calling this completion function. When zero, then we need to initialize,
1232 otherwise the initialization has already taken place and we can just
1233 return the next potential completion string.
1235 LINE_BUFFER is available to be looked at; it contains the entire text
1236 of the line. POINT is the offset in that line of the cursor. You
1237 should pretend that the line ends at POINT.
1239 Returns NULL if there are no more completions, else a pointer to a string
1240 which is a possible completion, it is the caller's responsibility to
1244 line_completion_function (text
, matches
, line_buffer
, point
)
1250 static char **list
= (char **)NULL
; /* Cache of completions */
1251 static int index
; /* Next cached completion */
1252 char *output
= NULL
;
1253 char *tmp_command
, *p
;
1254 /* Pointer within tmp_command which corresponds to text. */
1256 struct cmd_list_element
*c
, *result_list
;
1260 /* The caller is beginning to accumulate a new set of completions, so
1261 we need to find all of them now, and cache them for returning one at
1262 a time on future calls. */
1266 /* Free the storage used by LIST, but not by the strings inside.
1267 This is because rl_complete_internal () frees the strings. */
1273 /* Choose the default set of word break characters to break completions.
1274 If we later find out that we are doing completions on command strings
1275 (as opposed to strings supplied by the individual command completer
1276 functions, which can be any string) then we will switch to the
1277 special word break set for command strings, which leaves out the
1278 '-' character used in some commands. */
1280 rl_completer_word_break_characters
=
1281 gdb_completer_word_break_characters
;
1283 /* Decide whether to complete on a list of gdb commands or on symbols. */
1284 tmp_command
= (char *) alloca (point
+ 1);
1287 strncpy (tmp_command
, line_buffer
, point
);
1288 tmp_command
[point
] = '\0';
1289 /* Since text always contains some number of characters leading up
1290 to point, we can find the equivalent position in tmp_command
1291 by subtracting that many characters from the end of tmp_command. */
1292 word
= tmp_command
+ point
- strlen (text
);
1296 /* An empty line we want to consider ambiguous; that is, it
1297 could be any command. */
1298 c
= (struct cmd_list_element
*) -1;
1303 c
= lookup_cmd_1 (&p
, cmdlist
, &result_list
, 1);
1306 /* Move p up to the next interesting thing. */
1307 while (*p
== ' ' || *p
== '\t')
1314 /* It is an unrecognized command. So there are no
1315 possible completions. */
1318 else if (c
== (struct cmd_list_element
*) -1)
1322 /* lookup_cmd_1 advances p up to the first ambiguous thing, but
1323 doesn't advance over that thing itself. Do so now. */
1325 while (*q
&& (isalnum (*q
) || *q
== '-' || *q
== '_'))
1327 if (q
!= tmp_command
+ point
)
1329 /* There is something beyond the ambiguous
1330 command, so there are no possible completions. For
1331 example, "info t " or "info t foo" does not complete
1332 to anything, because "info t" can be "info target" or
1338 /* We're trying to complete on the command which was ambiguous.
1339 This we can deal with. */
1342 list
= complete_on_cmdlist (*result_list
->prefixlist
, p
,
1347 list
= complete_on_cmdlist (cmdlist
, p
, word
);
1349 /* Insure that readline does the right thing with respect to
1350 inserting quotes. */
1351 rl_completer_word_break_characters
=
1352 gdb_completer_command_word_break_characters
;
1357 /* We've recognized a full command. */
1359 if (p
== tmp_command
+ point
)
1361 /* There is no non-whitespace in the line beyond the command. */
1363 if (p
[-1] == ' ' || p
[-1] == '\t')
1365 /* The command is followed by whitespace; we need to complete
1366 on whatever comes after command. */
1369 /* It is a prefix command; what comes after it is
1370 a subcommand (e.g. "info "). */
1371 list
= complete_on_cmdlist (*c
->prefixlist
, p
, word
);
1373 /* Insure that readline does the right thing
1374 with respect to inserting quotes. */
1375 rl_completer_word_break_characters
=
1376 gdb_completer_command_word_break_characters
;
1380 /* It is a normal command; what comes after it is
1381 completed by the command's completer function. */
1382 list
= (*c
->completer
) (p
, word
);
1387 /* The command is not followed by whitespace; we need to
1388 complete on the command itself. e.g. "p" which is a
1389 command itself but also can complete to "print", "ptype"
1393 /* Find the command we are completing on. */
1395 while (q
> tmp_command
)
1397 if (isalnum (q
[-1]) || q
[-1] == '-' || q
[-1] == '_')
1403 list
= complete_on_cmdlist (result_list
, q
, word
);
1405 /* Insure that readline does the right thing
1406 with respect to inserting quotes. */
1407 rl_completer_word_break_characters
=
1408 gdb_completer_command_word_break_characters
;
1413 /* There is non-whitespace beyond the command. */
1415 if (c
->prefixlist
&& !c
->allow_unknown
)
1417 /* It is an unrecognized subcommand of a prefix command,
1418 e.g. "info adsfkdj". */
1423 /* It is a normal command. */
1424 list
= (*c
->completer
) (p
, word
);
1430 /* If we found a list of potential completions during initialization then
1431 dole them out one at a time. The vector of completions is NULL
1432 terminated, so after returning the last one, return NULL (and continue
1433 to do so) each time we are called after that, until a new list is
1438 output
= list
[index
];
1446 /* Can't do this because readline hasn't yet checked the word breaks
1447 for figuring out whether to insert a quote. */
1449 /* Make sure the word break characters are set back to normal for the
1450 next time that readline tries to complete something. */
1451 rl_completer_word_break_characters
=
1452 gdb_completer_word_break_characters
;
1458 /* Line completion interface function for readline. */
1461 readline_line_completion_function (text
, matches
)
1465 return line_completion_function (text
, matches
, rl_line_buffer
, rl_point
);
1468 /* Skip over a possibly quoted word (as defined by the quote characters
1469 and word break characters the completer uses). Returns pointer to the
1470 location after the "word". */
1476 char quote_char
= '\0';
1479 for (scan
= str
; *scan
!= '\0'; scan
++)
1481 if (quote_char
!= '\0')
1483 /* Ignore everything until the matching close quote char */
1484 if (*scan
== quote_char
)
1486 /* Found matching close quote. */
1491 else if (strchr (gdb_completer_quote_characters
, *scan
))
1493 /* Found start of a quoted string. */
1496 else if (strchr (gdb_completer_word_break_characters
, *scan
))
1510 #if STOP_SIGNAL == SIGTSTP
1511 signal (SIGTSTP
, SIG_DFL
);
1513 kill (getpid (), SIGTSTP
);
1514 signal (SIGTSTP
, stop_sig
);
1516 signal (STOP_SIGNAL
, stop_sig
);
1518 printf_unfiltered ("%s", prompt
);
1519 gdb_flush (gdb_stdout
);
1521 /* Forget about any previous command -- null line now will do nothing. */
1524 #endif /* STOP_SIGNAL */
1526 /* Initialize signal handlers. */
1536 signal (SIGINT
, request_quit
);
1538 /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get
1539 passed to the inferior, which we don't want. It would be
1540 possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but
1541 on BSD4.3 systems using vfork, that can affect the
1542 GDB process as well as the inferior (the signal handling tables
1543 might be in memory, shared between the two). Since we establish
1544 a handler for SIGQUIT, when we call exec it will set the signal
1545 to SIG_DFL for us. */
1546 signal (SIGQUIT
, do_nothing
);
1547 if (signal (SIGHUP
, do_nothing
) != SIG_IGN
)
1548 signal (SIGHUP
, disconnect
);
1549 signal (SIGFPE
, float_handler
);
1551 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1552 signal (SIGWINCH
, SIGWINCH_HANDLER
);
1556 /* Read one line from the command input stream `instream'
1557 into the local static buffer `linebuffer' (whose current length
1559 The buffer is made bigger as necessary.
1560 Returns the address of the start of the line.
1562 NULL is returned for end of file.
1564 *If* the instream == stdin & stdin is a terminal, the line read
1565 is copied into the file line saver (global var char *line,
1566 length linesize) so that it can be duplicated.
1568 This routine either uses fancy command line editing or
1569 simple input as the user has requested. */
1572 command_line_input (prrompt
, repeat
, annotation_suffix
)
1575 char *annotation_suffix
;
1577 static char *linebuffer
= 0;
1578 static unsigned linelength
= 0;
1582 char *local_prompt
= prrompt
;
1587 /* The annotation suffix must be non-NULL. */
1588 if (annotation_suffix
== NULL
)
1589 annotation_suffix
= "";
1591 if (annotation_level
> 1 && instream
== stdin
)
1593 local_prompt
= alloca ((prrompt
== NULL
? 0 : strlen (prrompt
))
1594 + strlen (annotation_suffix
) + 40);
1595 if (prrompt
== NULL
)
1596 local_prompt
[0] = '\0';
1598 strcpy (local_prompt
, prrompt
);
1599 strcat (local_prompt
, "\n\032\032");
1600 strcat (local_prompt
, annotation_suffix
);
1601 strcat (local_prompt
, "\n");
1604 if (linebuffer
== 0)
1607 linebuffer
= (char *) xmalloc (linelength
);
1612 /* Control-C quits instantly if typed while in this loop
1613 since it should not wait until the user types a newline. */
1617 signal (STOP_SIGNAL
, stop_sig
);
1622 /* Make sure that all output has been output. Some machines may let
1623 you get away with leaving out some of the gdb_flush, but not all. */
1625 gdb_flush (gdb_stdout
);
1626 gdb_flush (gdb_stderr
);
1628 if (source_file_name
!= NULL
)
1630 ++source_line_number
;
1631 sprintf (source_error
,
1632 "%s%s:%d: Error in sourced command file:\n",
1635 source_line_number
);
1636 error_pre_print
= source_error
;
1639 if (annotation_level
> 1 && instream
== stdin
)
1641 printf_unfiltered ("\n\032\032pre-");
1642 printf_unfiltered (annotation_suffix
);
1643 printf_unfiltered ("\n");
1646 /* Don't use fancy stuff if not talking to stdin. */
1647 if (command_editing_p
&& instream
== stdin
1648 && ISATTY (instream
))
1649 rl
= readline (local_prompt
);
1651 rl
= gdb_readline (local_prompt
);
1653 if (annotation_level
> 1 && instream
== stdin
)
1655 printf_unfiltered ("\n\032\032post-");
1656 printf_unfiltered (annotation_suffix
);
1657 printf_unfiltered ("\n");
1660 if (!rl
|| rl
== (char *) EOF
)
1665 if (strlen(rl
) + 1 + (p
- linebuffer
) > linelength
)
1667 linelength
= strlen(rl
) + 1 + (p
- linebuffer
);
1668 nline
= (char *) xrealloc (linebuffer
, linelength
);
1669 p
+= nline
- linebuffer
;
1673 /* Copy line. Don't copy null at end. (Leaves line alone
1674 if this was just a newline) */
1678 free (rl
); /* Allocated in readline. */
1680 if (p
== linebuffer
|| *(p
- 1) != '\\')
1683 p
--; /* Put on top of '\'. */
1684 local_prompt
= (char *) 0;
1689 signal (STOP_SIGNAL
, SIG_DFL
);
1696 #define SERVER_COMMAND_LENGTH 7
1698 (p
- linebuffer
> SERVER_COMMAND_LENGTH
)
1699 && STREQN (linebuffer
, "server ", SERVER_COMMAND_LENGTH
);
1702 /* Note that we don't set `line'. Between this and the check in
1703 dont_repeat, this insures that repeating will still do the
1706 return linebuffer
+ SERVER_COMMAND_LENGTH
;
1709 /* Do history expansion if that is wished. */
1710 if (history_expansion_p
&& instream
== stdin
1711 && ISATTY (instream
))
1713 char *history_value
;
1716 *p
= '\0'; /* Insert null now. */
1717 expanded
= history_expand (linebuffer
, &history_value
);
1720 /* Print the changes. */
1721 printf_unfiltered ("%s\n", history_value
);
1723 /* If there was an error, call this function again. */
1726 free (history_value
);
1727 return command_line_input (prrompt
, repeat
, annotation_suffix
);
1729 if (strlen (history_value
) > linelength
)
1731 linelength
= strlen (history_value
) + 1;
1732 linebuffer
= (char *) xrealloc (linebuffer
, linelength
);
1734 strcpy (linebuffer
, history_value
);
1735 p
= linebuffer
+ strlen(linebuffer
);
1736 free (history_value
);
1740 /* If we just got an empty line, and that is supposed
1741 to repeat the previous command, return the value in the
1745 if (p
== linebuffer
)
1748 while (*p1
== ' ' || *p1
== '\t')
1756 /* Add line to history if appropriate. */
1757 if (instream
== stdin
1758 && ISATTY (stdin
) && *linebuffer
)
1759 add_history (linebuffer
);
1761 /* Note: lines consisting solely of comments are added to the command
1762 history. This is useful when you type a command, and then
1763 realize you don't want to execute it quite yet. You can comment
1764 out the command and then later fetch it from the value history
1765 and remove the '#'. The kill ring is probably better, but some
1766 people are in the habit of commenting things out. */
1768 while ((c
= *p1
++) != '\0')
1771 while ((c
= *p1
++) != '"')
1773 /* Make sure an escaped '"' doesn't make us think the string
1781 while ((c
= *p1
++) != '\'')
1783 /* Make sure an escaped '\'' doesn't make us think the string
1792 /* Found a comment. */
1798 /* Save into global buffer if appropriate. */
1801 if (linelength
> linesize
)
1803 line
= xrealloc (line
, linelength
);
1804 linesize
= linelength
;
1806 strcpy (line
, linebuffer
);
1814 /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH
1815 code bodies. This is typically used when we encounter an "else"
1816 clause for an "if" command. */
1819 realloc_body_list (command
, new_length
)
1820 struct command_line
*command
;
1824 struct command_line
**body_list
;
1826 n
= command
->body_count
;
1828 /* Nothing to do? */
1829 if (new_length
<= n
)
1832 body_list
= (struct command_line
**)
1833 xmalloc (sizeof (struct command_line
*) * new_length
);
1835 memcpy (body_list
, command
->body_list
, sizeof (struct command_line
*) * n
);
1837 free (command
->body_list
);
1838 command
->body_list
= body_list
;
1839 command
->body_count
= new_length
;
1842 /* Read one line from the input stream. If the command is an "else" or
1843 "end", return such an indication to the caller. */
1845 static enum misc_command_type
1846 read_next_line (command
)
1847 struct command_line
**command
;
1849 char *p
, *p1
, *prompt_ptr
, control_prompt
[256];
1852 if (control_level
>= 254)
1853 error ("Control nesting too deep!\n");
1855 /* Set a prompt based on the nesting of the control commands. */
1856 if (instream
== stdin
)
1858 for (i
= 0; i
< control_level
; i
++)
1859 control_prompt
[i
] = ' ';
1860 control_prompt
[i
] = '>';
1861 control_prompt
[i
+1] = '\0';
1862 prompt_ptr
= (char *)&control_prompt
[0];
1867 p
= command_line_input (prompt_ptr
, instream
== stdin
, "commands");
1869 /* Not sure what to do here. */
1873 /* Strip leading and trailing whitespace. */
1874 while (*p
== ' ' || *p
== '\t')
1877 p1
= p
+ strlen (p
);
1878 while (p1
!= p
&& (p1
[-1] == ' ' || p1
[-1] == '\t'))
1881 /* Blanks and comments don't really do anything, but we need to
1882 distinguish them from else, end and other commands which can be
1884 if (p1
== p
|| p
[0] == '#')
1887 /* Is this the end of a simple, while, or if control structure? */
1888 if (p1
- p
== 3 && !strncmp (p
, "end", 3))
1891 /* Is the else clause of an if control structure? */
1892 if (p1
- p
== 4 && !strncmp (p
, "else", 4))
1893 return else_command
;
1895 /* Check for while, if, break, continue, etc and build a new command
1896 line structure for them. */
1897 if (p1
- p
> 5 && !strncmp (p
, "while", 5))
1898 *command
= build_command_line (while_control
, p
+ 6);
1899 else if (p1
- p
> 2 && !strncmp (p
, "if", 2))
1900 *command
= build_command_line (if_control
, p
+ 3);
1901 else if (p1
- p
== 5 && !strncmp (p
, "loop_break", 5))
1903 *command
= (struct command_line
*)
1904 xmalloc (sizeof (struct command_line
));
1905 (*command
)->next
= NULL
;
1906 (*command
)->line
= NULL
;
1907 (*command
)->control_type
= break_control
;
1908 (*command
)->body_count
= 0;
1909 (*command
)->body_list
= NULL
;
1911 else if (p1
- p
== 8 && !strncmp (p
, "loop_continue", 8))
1913 *command
= (struct command_line
*)
1914 xmalloc (sizeof (struct command_line
));
1915 (*command
)->next
= NULL
;
1916 (*command
)->line
= NULL
;
1917 (*command
)->control_type
= continue_control
;
1918 (*command
)->body_count
= 0;
1919 (*command
)->body_list
= NULL
;
1923 /* A normal command. */
1924 *command
= (struct command_line
*)
1925 xmalloc (sizeof (struct command_line
));
1926 (*command
)->next
= NULL
;
1927 (*command
)->line
= savestring (p
, p1
- p
);
1928 (*command
)->control_type
= simple_control
;
1929 (*command
)->body_count
= 0;
1930 (*command
)->body_list
= NULL
;
1933 /* Nothing special. */
1937 /* Recursively read in the control structures and create a command_line
1940 The parent_control parameter is the control structure in which the
1941 following commands are nested. */
1943 static enum command_control_type
1944 recurse_read_control_structure (current_cmd
)
1945 struct command_line
*current_cmd
;
1947 int current_body
, i
;
1948 enum misc_command_type val
;
1949 enum command_control_type ret
;
1950 struct command_line
**body_ptr
, *child_tail
, *next
;
1951 struct cleanup
*old_chains
, *tmp_chains
;
1957 /* Sanity checks. */
1958 if (current_cmd
->control_type
== simple_control
)
1960 error ("Recursed on a simple control type\n");
1961 return invalid_control
;
1964 if (current_body
> current_cmd
->body_count
)
1966 error ("Allocated body is smaller than this command type needs\n");
1967 return invalid_control
;
1970 /* Read lines from the input stream and build control structures. */
1976 val
= read_next_line (&next
);
1978 /* Just skip blanks and comments. */
1979 if (val
== nop_command
)
1982 if (val
== end_command
)
1984 if (current_cmd
->control_type
== while_control
1985 || current_cmd
->control_type
== if_control
)
1987 /* Success reading an entire control structure. */
1988 ret
= simple_control
;
1993 ret
= invalid_control
;
1998 /* Not the end of a control structure. */
1999 if (val
== else_command
)
2001 if (current_cmd
->control_type
== if_control
2002 && current_body
== 1)
2004 realloc_body_list (current_cmd
, 2);
2011 ret
= invalid_control
;
2018 child_tail
->next
= next
;
2022 /* We have just read the first line of the child's control
2023 structure. From now on, arrange to throw away the line
2024 we have if we quit or get an error. */
2025 body_ptr
= current_cmd
->body_list
;
2026 for (i
= 1; i
< current_body
; i
++)
2031 tmp_chains
= make_cleanup (free_command_lines
, body_ptr
);
2034 old_chains
= tmp_chains
;
2039 /* If the latest line is another control structure, then recurse
2041 if (next
->control_type
== while_control
2042 || next
->control_type
== if_control
)
2045 ret
= recurse_read_control_structure (next
);
2048 if (ret
!= simple_control
)
2054 if (ret
== invalid_control
&& old_chains
)
2055 do_cleanups (old_chains
);
2056 else if (old_chains
)
2057 discard_cleanups (old_chains
);
2063 /* Read lines from the input stream
2064 and accumulate them in a chain of struct command_line's
2065 which is then returned. */
2067 struct command_line
*
2068 read_command_lines ()
2070 struct command_line
*head
, *tail
, *next
;
2071 struct cleanup
*old_chain
;
2072 enum command_control_type ret
;
2073 enum misc_command_type val
;
2080 val
= read_next_line (&next
);
2082 /* Ignore blank lines or comments. */
2083 if (val
== nop_command
)
2086 if (val
== end_command
)
2088 ret
= simple_control
;
2092 if (val
!= ok_command
)
2094 ret
= invalid_control
;
2098 if (next
->control_type
== while_control
2099 || next
->control_type
== if_control
)
2102 ret
= recurse_read_control_structure (next
);
2105 if (ret
== invalid_control
)
2116 old_chain
= make_cleanup (free_command_lines
, &head
);
2125 if (ret
!= invalid_control
)
2127 discard_cleanups (old_chain
);
2131 do_cleanups (old_chain
);
2137 /* Free a chain of struct command_line's. */
2140 free_command_lines (lptr
)
2141 struct command_line
**lptr
;
2143 register struct command_line
*l
= *lptr
;
2144 register struct command_line
*next
;
2145 struct command_line
**blist
;
2150 if (l
->body_count
> 0)
2152 blist
= l
->body_list
;
2153 for (i
= 0; i
< l
->body_count
; i
++, blist
++)
2154 free_command_lines (blist
);
2163 /* Add an element to the list of info subcommands. */
2166 add_info (name
, fun
, doc
)
2168 void (*fun
) PARAMS ((char *, int));
2171 add_cmd (name
, no_class
, fun
, doc
, &infolist
);
2174 /* Add an alias to the list of info subcommands. */
2177 add_info_alias (name
, oldname
, abbrev_flag
)
2182 add_alias_cmd (name
, oldname
, 0, abbrev_flag
, &infolist
);
2185 /* The "info" command is defined as a prefix, with allow_unknown = 0.
2186 Therefore, its own definition is called only for "info" with no args. */
2190 info_command (arg
, from_tty
)
2194 printf_unfiltered ("\"info\" must be followed by the name of an info command.\n");
2195 help_list (infolist
, "info ", -1, gdb_stdout
);
2198 /* The "complete" command is used by Emacs to implement completion. */
2202 complete_command (arg
, from_tty
)
2214 argpoint
= strlen (arg
);
2216 for (completion
= line_completion_function (arg
, i
= 0, arg
, argpoint
);
2218 completion
= line_completion_function (arg
, ++i
, arg
, argpoint
))
2220 printf_unfiltered ("%s\n", completion
);
2225 /* The "show" command with no arguments shows all the settings. */
2229 show_command (arg
, from_tty
)
2233 cmd_show_list (showlist
, from_tty
, "");
2236 /* Add an element to the list of commands. */
2239 add_com (name
, class, fun
, doc
)
2241 enum command_class
class;
2242 void (*fun
) PARAMS ((char *, int));
2245 add_cmd (name
, class, fun
, doc
, &cmdlist
);
2248 /* Add an alias or abbreviation command to the list of commands. */
2251 add_com_alias (name
, oldname
, class, abbrev_flag
)
2254 enum command_class
class;
2257 add_alias_cmd (name
, oldname
, class, abbrev_flag
, &cmdlist
);
2264 error ("Argument required (%s).", why
);
2269 help_command (command
, from_tty
)
2271 int from_tty
; /* Ignored */
2273 help_cmd (command
, gdb_stdout
);
2277 validate_comname (comname
)
2283 error_no_arg ("name of command to define");
2288 if (!isalnum(*p
) && *p
!= '-')
2289 error ("Junk in argument list: \"%s\"", p
);
2294 /* This is just a placeholder in the command data structures. */
2296 user_defined_command (ignore
, from_tty
)
2303 define_command (comname
, from_tty
)
2307 register struct command_line
*cmds
;
2308 register struct cmd_list_element
*c
, *newc
, *hookc
= 0;
2309 char *tem
= comname
;
2310 #define HOOK_STRING "hook-"
2313 validate_comname (comname
);
2315 /* Look it up, and verify that we got an exact match. */
2316 c
= lookup_cmd (&tem
, cmdlist
, "", -1, 1);
2317 if (c
&& !STREQ (comname
, c
->name
))
2322 if (c
->class == class_user
|| c
->class == class_alias
)
2323 tem
= "Redefine command \"%s\"? ";
2325 tem
= "Really redefine built-in command \"%s\"? ";
2326 if (!query (tem
, c
->name
))
2327 error ("Command \"%s\" not redefined.", c
->name
);
2330 /* If this new command is a hook, then mark the command which it
2331 is hooking. Note that we allow hooking `help' commands, so that
2332 we can hook the `stop' pseudo-command. */
2334 if (!strncmp (comname
, HOOK_STRING
, HOOK_LEN
))
2336 /* Look up cmd it hooks, and verify that we got an exact match. */
2337 tem
= comname
+HOOK_LEN
;
2338 hookc
= lookup_cmd (&tem
, cmdlist
, "", -1, 0);
2339 if (hookc
&& !STREQ (comname
+HOOK_LEN
, hookc
->name
))
2343 warning ("Your new `%s' command does not hook any existing command.",
2345 if (!query ("Proceed? ", (char *)0))
2346 error ("Not confirmed.");
2350 comname
= savestring (comname
, strlen (comname
));
2352 /* If the rest of the commands will be case insensitive, this one
2353 should behave in the same manner. */
2354 for (tem
= comname
; *tem
; tem
++)
2355 if (isupper(*tem
)) *tem
= tolower(*tem
);
2359 printf_unfiltered ("Type commands for definition of \"%s\".\n\
2360 End with a line saying just \"end\".\n", comname
);
2361 gdb_flush (gdb_stdout
);
2365 cmds
= read_command_lines ();
2367 if (c
&& c
->class == class_user
)
2368 free_command_lines (&c
->user_commands
);
2370 newc
= add_cmd (comname
, class_user
, user_defined_command
,
2371 (c
&& c
->class == class_user
)
2372 ? c
->doc
: savestring ("User-defined.", 13), &cmdlist
);
2373 newc
->user_commands
= cmds
;
2375 /* If this new command is a hook, then mark both commands as being
2379 hookc
->hook
= newc
; /* Target gets hooked. */
2380 newc
->hookee
= hookc
; /* We are marked as hooking target cmd. */
2385 document_command (comname
, from_tty
)
2389 struct command_line
*doclines
;
2390 register struct cmd_list_element
*c
;
2391 char *tem
= comname
;
2393 validate_comname (comname
);
2395 c
= lookup_cmd (&tem
, cmdlist
, "", 0, 1);
2397 if (c
->class != class_user
)
2398 error ("Command \"%s\" is built-in.", comname
);
2401 printf_unfiltered ("Type documentation for \"%s\".\n\
2402 End with a line saying just \"end\".\n", comname
);
2404 doclines
= read_command_lines ();
2406 if (c
->doc
) free (c
->doc
);
2409 register struct command_line
*cl1
;
2410 register int len
= 0;
2412 for (cl1
= doclines
; cl1
; cl1
= cl1
->next
)
2413 len
+= strlen (cl1
->line
) + 1;
2415 c
->doc
= (char *) xmalloc (len
+ 1);
2418 for (cl1
= doclines
; cl1
; cl1
= cl1
->next
)
2420 strcat (c
->doc
, cl1
->line
);
2422 strcat (c
->doc
, "\n");
2426 free_command_lines (&doclines
);
2430 print_gnu_advertisement ()
2432 printf_unfiltered ("\
2433 GDB is free software and you are welcome to distribute copies of it\n\
2434 under certain conditions; type \"show copying\" to see the conditions.\n\
2435 There is absolutely no warranty for GDB; type \"show warranty\" for details.\n\
2440 print_gdb_version (stream
)
2443 fprintf_filtered (stream
, "\
2444 GDB %s (%s", version
, host_name
);
2446 if (!STREQ (host_name
, target_name
))
2447 fprintf_filtered (stream
, " --target %s", target_name
);
2449 fprintf_filtered (stream
, "), ");
2451 fprintf_filtered (stream
, "Copyright 1994 Free Software Foundation, Inc.");
2456 show_version (args
, from_tty
)
2461 print_gnu_advertisement ();
2462 print_gdb_version (gdb_stdout
);
2463 printf_filtered ("\n");
2467 /* xgdb calls this to reprint the usual GDB prompt. Obsolete now that xgdb
2473 printf_unfiltered ("%s", prompt
);
2474 gdb_flush (gdb_stdout
);
2478 quit_command (args
, from_tty
)
2482 if (inferior_pid
!= 0 && target_has_execution
)
2486 if (query ("The program is running. Quit anyway (and detach it)? "))
2487 target_detach (args
, from_tty
);
2489 error ("Not confirmed.");
2493 if (query ("The program is running. Quit anyway (and kill it)? "))
2496 error ("Not confirmed.");
2499 /* UDI wants this, to kill the TIP. */
2502 /* Save the history information if it is appropriate to do so. */
2503 if (write_history_p
&& history_filename
)
2504 write_history (history_filename
);
2509 /* Returns whether GDB is running on a terminal and whether the user
2510 desires that questions be asked of them on that terminal. */
2513 input_from_terminal_p ()
2515 return gdb_has_a_terminal () && (instream
== stdin
) & caution
;
2520 pwd_command (args
, from_tty
)
2524 if (args
) error ("The \"pwd\" command does not take an argument: %s", args
);
2525 getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
));
2527 if (!STREQ (gdb_dirbuf
, current_directory
))
2528 printf_unfiltered ("Working directory %s\n (canonically %s).\n",
2529 current_directory
, gdb_dirbuf
);
2531 printf_unfiltered ("Working directory %s.\n", current_directory
);
2535 cd_command (dir
, from_tty
)
2540 /* Found something other than leading repetitions of "/..". */
2541 int found_real_path
;
2544 /* If the new directory is absolute, repeat is a no-op; if relative,
2545 repeat might be useful but is more likely to be a mistake. */
2549 error_no_arg ("new working directory");
2551 dir
= tilde_expand (dir
);
2552 make_cleanup (free
, dir
);
2554 if (chdir (dir
) < 0)
2555 perror_with_name (dir
);
2558 dir
= savestring (dir
, len
- (len
> 1 && dir
[len
-1] == '/'));
2560 current_directory
= dir
;
2563 if (current_directory
[0] == '/' && current_directory
[1] == '\0')
2564 current_directory
= concat (current_directory
, dir
, NULL
);
2566 current_directory
= concat (current_directory
, "/", dir
, NULL
);
2570 /* Now simplify any occurrences of `.' and `..' in the pathname. */
2572 found_real_path
= 0;
2573 for (p
= current_directory
; *p
;)
2575 if (p
[0] == '/' && p
[1] == '.' && (p
[2] == 0 || p
[2] == '/'))
2577 else if (p
[0] == '/' && p
[1] == '.' && p
[2] == '.'
2578 && (p
[3] == 0 || p
[3] == '/'))
2580 if (found_real_path
)
2582 /* Search backwards for the directory just before the "/.."
2583 and obliterate it and the "/..". */
2585 while (q
!= current_directory
&& q
[-1] != '/')
2588 if (q
== current_directory
)
2589 /* current_directory is
2590 a relative pathname ("can't happen"--leave it alone). */
2594 strcpy (q
- 1, p
+ 3);
2599 /* We are dealing with leading repetitions of "/..", for example
2600 "/../..", which is the Mach super-root. */
2605 found_real_path
= 1;
2610 forget_cached_source_info ();
2613 pwd_command ((char *) 0, 1);
2616 struct source_cleanup_lines_args
{
2619 char *old_pre_error
;
2620 char *old_error_pre_print
;
2624 source_cleanup_lines (args
)
2627 struct source_cleanup_lines_args
*p
=
2628 (struct source_cleanup_lines_args
*)args
;
2629 source_line_number
= p
->old_line
;
2630 source_file_name
= p
->old_file
;
2631 source_pre_error
= p
->old_pre_error
;
2632 error_pre_print
= p
->old_error_pre_print
;
2637 source_command (args
, from_tty
)
2642 struct cleanup
*old_cleanups
;
2644 struct source_cleanup_lines_args old_lines
;
2649 error ("source command requires pathname of file to source.");
2652 file
= tilde_expand (file
);
2653 old_cleanups
= make_cleanup (free
, file
);
2655 stream
= fopen (file
, FOPEN_RT
);
2657 perror_with_name (file
);
2659 make_cleanup (fclose
, stream
);
2661 old_lines
.old_line
= source_line_number
;
2662 old_lines
.old_file
= source_file_name
;
2663 old_lines
.old_pre_error
= source_pre_error
;
2664 old_lines
.old_error_pre_print
= error_pre_print
;
2665 make_cleanup (source_cleanup_lines
, &old_lines
);
2666 source_line_number
= 0;
2667 source_file_name
= file
;
2668 source_pre_error
= error_pre_print
== NULL
? "" : error_pre_print
;
2669 source_pre_error
= savestring (source_pre_error
, strlen (source_pre_error
));
2670 make_cleanup (free
, source_pre_error
);
2671 /* This will get set every time we read a line. So it won't stay "" for
2673 error_pre_print
= "";
2675 needed_length
= strlen (source_file_name
) + strlen (source_pre_error
) + 80;
2676 if (source_error_allocated
< needed_length
)
2678 source_error_allocated
*= 2;
2679 if (source_error_allocated
< needed_length
)
2680 source_error_allocated
= needed_length
;
2681 if (source_error
== NULL
)
2682 source_error
= xmalloc (source_error_allocated
);
2684 source_error
= xrealloc (source_error
, source_error_allocated
);
2687 read_command_file (stream
);
2689 do_cleanups (old_cleanups
);
2694 echo_command (text
, from_tty
)
2702 while ((c
= *p
++) != '\0')
2706 /* \ at end of argument is used after spaces
2707 so they won't be lost. */
2711 c
= parse_escape (&p
);
2713 printf_filtered ("%c", c
);
2716 printf_filtered ("%c", c
);
2719 /* Force this output to appear now. */
2721 gdb_flush (gdb_stdout
);
2725 #ifdef TARGET_BYTE_ORDER_SELECTABLE
2727 /* Functions to manipulate the endianness of the target. */
2729 #ifndef TARGET_BYTE_ORDER_DEFAULT
2730 #define TARGET_BYTE_ORDER_DEFAULT BIG_ENDIAN
2733 int target_byte_order
= TARGET_BYTE_ORDER_DEFAULT
;
2735 static int target_byte_order_auto
= 1;
2737 /* Called if the user enters ``set endian'' without an argument. */
2739 set_endian (args
, from_tty
)
2743 printf_unfiltered ("\"set endian\" must be followed by \"auto\", \"big\" or \"little\".\n");
2744 show_endian (args
, from_tty
);
2747 /* Called by ``set endian big''. */
2749 set_endian_big (args
, from_tty
)
2753 target_byte_order
= BIG_ENDIAN
;
2754 target_byte_order_auto
= 0;
2757 /* Called by ``set endian little''. */
2759 set_endian_little (args
, from_tty
)
2763 target_byte_order
= LITTLE_ENDIAN
;
2764 target_byte_order_auto
= 0;
2767 /* Called by ``set endian auto''. */
2769 set_endian_auto (args
, from_tty
)
2773 target_byte_order_auto
= 1;
2776 /* Called by ``show endian''. */
2778 show_endian (args
, from_tty
)
2783 (target_byte_order_auto
2784 ? "The target endianness is set automatically (currently %s endian)\n"
2785 : "The target is assumed to be %s endian\n");
2786 printf_unfiltered (msg
, TARGET_BYTE_ORDER
== BIG_ENDIAN
? "big" : "little");
2789 #endif /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
2791 /* Set the endianness from a BFD. */
2793 set_endian_from_file (abfd
)
2796 #ifdef TARGET_BYTE_ORDER_SELECTABLE
2799 if (abfd
->xvec
->byteorder_big_p
)
2802 want
= LITTLE_ENDIAN
;
2803 if (target_byte_order_auto
)
2804 target_byte_order
= want
;
2805 else if (target_byte_order
!= want
)
2806 warning ("%s endian file does not match %s endian target.",
2807 want
== BIG_ENDIAN
? "big" : "little",
2808 TARGET_BYTE_ORDER
== BIG_ENDIAN
? "big" : "little");
2810 #else /* ! defined (TARGET_BYTE_ORDER_SELECTABLE) */
2812 if (abfd
->xvec
->byteorder_big_p
2813 ? TARGET_BYTE_ORDER
!= BIG_ENDIAN
2814 : TARGET_BYTE_ORDER
== BIG_ENDIAN
)
2815 warning ("%s endian file does not match %s endian target.",
2816 abfd
->xvec
->byteorder_big_p
? "big" : "little",
2817 TARGET_BYTE_ORDER
== BIG_ENDIAN
? "big" : "little");
2819 #endif /* ! defined (TARGET_BYTE_ORDER_SELECTABLE) */
2822 /* Functions to manipulate command line editing control variables. */
2824 /* Number of commands to print in each call to show_commands. */
2825 #define Hist_print 10
2827 show_commands (args
, from_tty
)
2831 /* Index for history commands. Relative to history_base. */
2834 /* Number of the history entry which we are planning to display next.
2835 Relative to history_base. */
2838 /* The first command in the history which doesn't exist (i.e. one more
2839 than the number of the last command). Relative to history_base. */
2842 extern HIST_ENTRY
*history_get
PARAMS ((int));
2844 /* Print out some of the commands from the command history. */
2845 /* First determine the length of the history list. */
2846 hist_len
= history_size
;
2847 for (offset
= 0; offset
< history_size
; offset
++)
2849 if (!history_get (history_base
+ offset
))
2858 if (args
[0] == '+' && args
[1] == '\0')
2859 /* "info editing +" should print from the stored position. */
2862 /* "info editing <exp>" should print around command number <exp>. */
2863 num
= (parse_and_eval_address (args
) - history_base
) - Hist_print
/ 2;
2865 /* "show commands" means print the last Hist_print commands. */
2868 num
= hist_len
- Hist_print
;
2874 /* If there are at least Hist_print commands, we want to display the last
2875 Hist_print rather than, say, the last 6. */
2876 if (hist_len
- num
< Hist_print
)
2878 num
= hist_len
- Hist_print
;
2883 for (offset
= num
; offset
< num
+ Hist_print
&& offset
< hist_len
; offset
++)
2885 printf_filtered ("%5d %s\n", history_base
+ offset
,
2886 (history_get (history_base
+ offset
))->line
);
2889 /* The next command we want to display is the next one that we haven't
2893 /* If the user repeats this command with return, it should do what
2894 "show commands +" does. This is unnecessary if arg is null,
2895 because "show commands +" is not useful after "show commands". */
2896 if (from_tty
&& args
)
2903 /* Called by do_setshow_command. */
2906 set_history_size_command (args
, from_tty
, c
)
2909 struct cmd_list_element
*c
;
2911 if (history_size
== INT_MAX
)
2912 unstifle_history ();
2913 else if (history_size
>= 0)
2914 stifle_history (history_size
);
2917 history_size
= INT_MAX
;
2918 error ("History size must be non-negative");
2924 set_history (args
, from_tty
)
2928 printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n");
2929 help_list (sethistlist
, "set history ", -1, gdb_stdout
);
2934 show_history (args
, from_tty
)
2938 cmd_show_list (showhistlist
, from_tty
, "");
2941 int info_verbose
= 0; /* Default verbose msgs off */
2943 /* Called by do_setshow_command. An elaborate joke. */
2946 set_verbose (args
, from_tty
, c
)
2949 struct cmd_list_element
*c
;
2951 char *cmdname
= "verbose";
2952 struct cmd_list_element
*showcmd
;
2954 showcmd
= lookup_cmd_1 (&cmdname
, showlist
, NULL
, 1);
2958 c
->doc
= "Set verbose printing of informational messages.";
2959 showcmd
->doc
= "Show verbose printing of informational messages.";
2963 c
->doc
= "Set verbosity.";
2964 showcmd
->doc
= "Show verbosity.";
2969 float_handler (signo
)
2972 /* This message is based on ANSI C, section 4.7. Note that integer
2973 divide by zero causes this, so "float" is a misnomer. */
2974 signal (SIGFPE
, float_handler
);
2975 error ("Erroneous arithmetic operation.");
2987 enablebreaklist
= NULL
;
2991 #ifdef TARGET_BYTE_ORDER_SELECTABLE
2995 showhistlist
= NULL
;
2996 unsethistlist
= NULL
;
2997 #if MAINTENANCE_CMDS
2998 maintenancelist
= NULL
;
2999 maintenanceinfolist
= NULL
;
3000 maintenanceprintlist
= NULL
;
3002 setprintlist
= NULL
;
3003 showprintlist
= NULL
;
3004 setchecklist
= NULL
;
3005 showchecklist
= NULL
;
3008 /* Init the history buffer. Note that we are called after the init file(s)
3009 * have been read so that the user can change the history file via his
3010 * .gdbinit file (for instance). The GDBHISTFILE environment variable
3011 * overrides all of this.
3019 tmpenv
= getenv ("HISTSIZE");
3021 history_size
= atoi (tmpenv
);
3022 else if (!history_size
)
3025 stifle_history (history_size
);
3027 tmpenv
= getenv ("GDBHISTFILE");
3029 history_filename
= savestring (tmpenv
, strlen(tmpenv
));
3030 else if (!history_filename
) {
3031 /* We include the current directory so that if the user changes
3032 directories the file written will be the same as the one
3034 history_filename
= concat (current_directory
, "/.gdb_history", NULL
);
3036 read_history (history_filename
);
3042 struct cmd_list_element
*c
;
3044 #ifdef TARGET_BYTE_ORDER_SELECTABLE
3046 add_prefix_cmd ("endian", class_support
, set_endian
,
3047 "Set endianness of target.",
3048 &endianlist
, "set endian ", 0, &setlist
);
3049 add_cmd ("big", class_support
, set_endian_big
,
3050 "Set target as being big endian.", &endianlist
);
3051 add_cmd ("little", class_support
, set_endian_little
,
3052 "Set target as being little endian.", &endianlist
);
3053 add_cmd ("auto", class_support
, set_endian_auto
,
3054 "Select target endianness automatically.", &endianlist
);
3055 add_cmd ("endian", class_support
, show_endian
,
3056 "Show endianness of target.", &showlist
);
3058 #endif /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
3060 #ifdef DEFAULT_PROMPT
3061 prompt
= savestring (DEFAULT_PROMPT
, strlen(DEFAULT_PROMPT
));
3063 prompt
= savestring ("(gdb) ", 6);
3066 /* Set the important stuff up for command editing. */
3067 command_editing_p
= 1;
3068 history_expansion_p
= 0;
3069 write_history_p
= 0;
3071 /* Setup important stuff for command line editing. */
3072 rl_completion_entry_function
= (int (*)()) readline_line_completion_function
;
3073 rl_completer_word_break_characters
= gdb_completer_word_break_characters
;
3074 rl_completer_quote_characters
= gdb_completer_quote_characters
;
3075 rl_readline_name
= "gdb";
3077 /* Define the classes of commands.
3078 They will appear in the help list in the reverse of this order. */
3080 add_cmd ("internals", class_maintenance
, NO_FUNCTION
,
3081 "Maintenance commands.\n\
3082 Some gdb commands are provided just for use by gdb maintainers.\n\
3083 These commands are subject to frequent change, and may not be as\n\
3084 well documented as user commands.",
3086 add_cmd ("obscure", class_obscure
, NO_FUNCTION
, "Obscure features.", &cmdlist
);
3087 add_cmd ("aliases", class_alias
, NO_FUNCTION
, "Aliases of other commands.", &cmdlist
);
3088 add_cmd ("user-defined", class_user
, NO_FUNCTION
, "User-defined commands.\n\
3089 The commands in this class are those defined by the user.\n\
3090 Use the \"define\" command to define a command.", &cmdlist
);
3091 add_cmd ("support", class_support
, NO_FUNCTION
, "Support facilities.", &cmdlist
);
3092 add_cmd ("status", class_info
, NO_FUNCTION
, "Status inquiries.", &cmdlist
);
3093 add_cmd ("files", class_files
, NO_FUNCTION
, "Specifying and examining files.", &cmdlist
);
3094 add_cmd ("breakpoints", class_breakpoint
, NO_FUNCTION
, "Making program stop at certain points.", &cmdlist
);
3095 add_cmd ("data", class_vars
, NO_FUNCTION
, "Examining data.", &cmdlist
);
3096 add_cmd ("stack", class_stack
, NO_FUNCTION
, "Examining the stack.\n\
3097 The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\
3098 counting from zero for the innermost (currently executing) frame.\n\n\
3099 At any time gdb identifies one frame as the \"selected\" frame.\n\
3100 Variable lookups are done with respect to the selected frame.\n\
3101 When the program being debugged stops, gdb selects the innermost frame.\n\
3102 The commands below can be used to select other frames by number or address.",
3104 add_cmd ("running", class_run
, NO_FUNCTION
, "Running the program.", &cmdlist
);
3106 add_com ("pwd", class_files
, pwd_command
,
3107 "Print working directory. This is used for your program as well.");
3108 c
= add_cmd ("cd", class_files
, cd_command
,
3109 "Set working directory to DIR for debugger and program being debugged.\n\
3110 The change does not take effect for the program being debugged\n\
3111 until the next time it is started.", &cmdlist
);
3112 c
->completer
= filename_completer
;
3115 (add_set_cmd ("prompt", class_support
, var_string
, (char *)&prompt
,
3120 add_com ("echo", class_support
, echo_command
,
3121 "Print a constant string. Give string as argument.\n\
3122 C escape sequences may be used in the argument.\n\
3123 No newline is added at the end of the argument;\n\
3124 use \"\\n\" if you want a newline to be printed.\n\
3125 Since leading and trailing whitespace are ignored in command arguments,\n\
3126 if you want to print some you must use \"\\\" before leading whitespace\n\
3127 to be printed or after trailing whitespace.");
3128 add_com ("document", class_support
, document_command
,
3129 "Document a user-defined command.\n\
3130 Give command name as argument. Give documentation on following lines.\n\
3131 End with a line of just \"end\".");
3132 add_com ("define", class_support
, define_command
,
3133 "Define a new command name. Command name is argument.\n\
3134 Definition appears on following lines, one command per line.\n\
3135 End with a line of just \"end\".\n\
3136 Use the \"document\" command to give documentation for the new command.\n\
3137 Commands defined in this way do not take arguments.");
3140 c
= add_cmd ("source", class_support
, source_command
,
3141 "Read commands from a file named FILE.\n\
3142 Note that the file \"" GDBINIT_FILENAME
"\" is read automatically in this way\n\
3143 when gdb is started.", &cmdlist
);
3145 /* Punt file name, we can't help it easily. */
3146 c
= add_cmd ("source", class_support
, source_command
,
3147 "Read commands from a file named FILE.\n\
3148 Note that the file \".gdbinit\" is read automatically in this way\n\
3149 when gdb is started.", &cmdlist
);
3151 c
->completer
= filename_completer
;
3153 add_com ("quit", class_support
, quit_command
, "Exit gdb.");
3154 add_com ("help", class_support
, help_command
, "Print list of commands.");
3155 add_com_alias ("q", "quit", class_support
, 1);
3156 add_com_alias ("h", "help", class_support
, 1);
3159 c
= add_set_cmd ("verbose", class_support
, var_boolean
, (char *)&info_verbose
,
3162 add_show_from_set (c
, &showlist
);
3163 c
->function
.sfunc
= set_verbose
;
3164 set_verbose (NULL
, 0, c
);
3167 (add_set_cmd ("editing", class_support
, var_boolean
, (char *)&command_editing_p
,
3168 "Set editing of command lines as they are typed.\n\
3169 Use \"on\" to enable to enable the editing, and \"off\" to disable it.\n\
3170 Without an argument, command line editing is enabled. To edit, use\n\
3171 EMACS-like or VI-like commands like control-P or ESC.", &setlist
),
3174 add_prefix_cmd ("history", class_support
, set_history
,
3175 "Generic command for setting command history parameters.",
3176 &sethistlist
, "set history ", 0, &setlist
);
3177 add_prefix_cmd ("history", class_support
, show_history
,
3178 "Generic command for showing command history parameters.",
3179 &showhistlist
, "show history ", 0, &showlist
);
3182 (add_set_cmd ("expansion", no_class
, var_boolean
, (char *)&history_expansion_p
,
3183 "Set history expansion on command input.\n\
3184 Without an argument, history expansion is enabled.", &sethistlist
),
3188 (add_set_cmd ("save", no_class
, var_boolean
, (char *)&write_history_p
,
3189 "Set saving of the history record on exit.\n\
3190 Use \"on\" to enable to enable the saving, and \"off\" to disable it.\n\
3191 Without an argument, saving is enabled.", &sethistlist
),
3194 c
= add_set_cmd ("size", no_class
, var_integer
, (char *)&history_size
,
3195 "Set the size of the command history, \n\
3196 ie. the number of previous commands to keep a record of.", &sethistlist
);
3197 add_show_from_set (c
, &showhistlist
);
3198 c
->function
.sfunc
= set_history_size_command
;
3201 (add_set_cmd ("filename", no_class
, var_filename
, (char *)&history_filename
,
3202 "Set the filename in which to record the command history\n\
3203 (the list of previous commands of which a record is kept).", &sethistlist
),
3207 (add_set_cmd ("confirm", class_support
, var_boolean
,
3209 "Set whether to confirm potentially dangerous operations.",
3213 add_prefix_cmd ("info", class_info
, info_command
,
3214 "Generic command for showing things about the program being debugged.",
3215 &infolist
, "info ", 0, &cmdlist
);
3216 add_com_alias ("i", "info", class_info
, 1);
3218 add_com ("complete", class_obscure
, complete_command
,
3219 "List the completions for the rest of the line as a command.");
3221 add_prefix_cmd ("show", class_info
, show_command
,
3222 "Generic command for showing things about the debugger.",
3223 &showlist
, "show ", 0, &cmdlist
);
3224 /* Another way to get at the same thing. */
3225 add_info ("set", show_command
, "Show all GDB settings.");
3227 add_cmd ("commands", no_class
, show_commands
,
3228 "Show the the history of commands you typed.\n\
3229 You can supply a command number to start with, or a `+' to start after\n\
3230 the previous command number shown.",
3233 add_cmd ("version", no_class
, show_version
,
3234 "Show what version of GDB this is.", &showlist
);
3236 add_com ("while", class_support
, while_command
,
3237 "Execute nested commands WHILE the conditional expression is non zero.\n\
3238 The conditional expression must follow the word `while' and must in turn be\
3239 followed by a new line. The nested commands must be entered one per line,\
3240 and should be terminated by the word `end'.");
3242 add_com ("if", class_support
, if_command
,
3243 "Execute nested commands once IF the conditional expression is non zero.\n\
3244 The conditional expression must follow the word `if' and must in turn be\
3245 followed by a new line. The nested commands must be entered one per line,\
3246 and should be terminated by the word 'else' or `end'. If an else clause\
3247 is used, the same rules apply to its nested commands as to the first ones.");
3249 /* If target is open when baud changes, it doesn't take effect until the
3250 next open (I think, not sure). */
3251 add_show_from_set (add_set_cmd ("remotebaud", no_class
,
3252 var_zinteger
, (char *)&baud_rate
,
3253 "Set baud rate for remote serial I/O.\n\
3254 This value is used to set the speed of the serial port when debugging\n\
3255 using remote targets.", &setlist
),
3259 add_set_cmd ("remotedebug", no_class
, var_zinteger
, (char *)&remote_debug
,
3260 "Set debugging of remote protocol.\n\
3261 When enabled, each packet sent or received with the remote target\n\
3262 is displayed.", &setlist
),