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 * symbol_completion_function
PARAMS ((char *, int));
63 static void command_loop_marker
PARAMS ((int));
65 static void while_command
PARAMS ((char *, int));
67 static void if_command
PARAMS ((char *, int));
69 static enum command_control_type
70 execute_control_command
PARAMS ((struct command_line
*));
72 static struct command_line
*
73 build_command_line
PARAMS ((enum command_control_type
, char *));
75 static struct command_line
*
76 get_command_line
PARAMS ((enum command_control_type
, char *));
78 static void realloc_body_list
PARAMS ((struct command_line
*, int));
80 static enum misc_command_type read_next_line
PARAMS ((struct command_line
**));
82 static enum command_control_type
83 recurse_read_control_structure
PARAMS ((struct command_line
*));
85 static void init_main
PARAMS ((void));
87 static void init_cmd_lists
PARAMS ((void));
89 static void float_handler
PARAMS ((int));
91 static void init_signals
PARAMS ((void));
93 static void set_verbose
PARAMS ((char *, int, struct cmd_list_element
*));
95 #ifdef TARGET_BYTE_ORDER_SELECTABLE
97 static void set_endian
PARAMS ((char *, int));
99 static void set_endian_big
PARAMS ((char *, int));
101 static void set_endian_little
PARAMS ((char *, int));
103 static void set_endian_auto
PARAMS ((char *, int));
105 static void show_endian
PARAMS ((char *, int));
109 static void show_history
PARAMS ((char *, int));
111 static void set_history
PARAMS ((char *, int));
113 static void set_history_size_command
PARAMS ((char *, int,
114 struct cmd_list_element
*));
116 static void show_commands
PARAMS ((char *, int));
118 static void echo_command
PARAMS ((char *, int));
120 static void pwd_command
PARAMS ((char *, int));
122 static void show_version
PARAMS ((char *, int));
124 static void document_command
PARAMS ((char *, int));
126 static void define_command
PARAMS ((char *, int));
128 static void validate_comname
PARAMS ((char *));
130 static void help_command
PARAMS ((char *, int));
132 static void show_command
PARAMS ((char *, int));
134 static void info_command
PARAMS ((char *, int));
136 static void complete_command
PARAMS ((char *, int));
138 static void do_nothing
PARAMS ((int));
140 static int quit_cover
PARAMS ((char *));
142 static void disconnect
PARAMS ((int));
144 static void source_cleanup
PARAMS ((FILE *));
146 /* If this definition isn't overridden by the header files, assume
147 that isatty and fileno exist on this system. */
149 #define ISATTY(FP) (isatty (fileno (FP)))
152 /* Initialization file name for gdb. This is overridden in some configs. */
154 #ifndef GDBINIT_FILENAME
155 #define GDBINIT_FILENAME ".gdbinit"
157 char gdbinit
[] = GDBINIT_FILENAME
;
158 int inhibit_gdbinit
= 0;
160 /* Disable windows if non-zero */
164 /* Version number of GDB, as a string. */
166 extern char *version
;
168 /* Canonical host name as a string. */
170 extern char *host_name
;
172 /* Canonical target name as a string. */
174 extern char *target_name
;
176 extern char lang_frame_mismatch_warn
[]; /* language.c */
178 /* Flag for whether we want all the "from_tty" gubbish printed. */
180 int caution
= 1; /* Default is yes, sigh. */
183 * Define all cmd_list_element's
186 /* Chain containing all defined commands. */
188 struct cmd_list_element
*cmdlist
;
190 /* Chain containing all defined info subcommands. */
192 struct cmd_list_element
*infolist
;
194 /* Chain containing all defined enable subcommands. */
196 struct cmd_list_element
*enablelist
;
198 /* Chain containing all defined disable subcommands. */
200 struct cmd_list_element
*disablelist
;
202 /* Chain containing all defined delete subcommands. */
204 struct cmd_list_element
*deletelist
;
206 /* Chain containing all defined "enable breakpoint" subcommands. */
208 struct cmd_list_element
*enablebreaklist
;
210 /* Chain containing all defined set subcommands */
212 struct cmd_list_element
*setlist
;
214 /* Chain containing all defined unset subcommands */
216 struct cmd_list_element
*unsetlist
;
218 /* Chain containing all defined show subcommands. */
220 struct cmd_list_element
*showlist
;
222 #ifdef TARGET_BYTE_ORDER_SELECTABLE
223 /* Chain containing the \"set endian\" commands. */
225 struct cmd_list_element
*endianlist
;
228 /* Chain containing all defined \"set history\". */
230 struct cmd_list_element
*sethistlist
;
232 /* Chain containing all defined \"show history\". */
234 struct cmd_list_element
*showhistlist
;
236 /* Chain containing all defined \"unset history\". */
238 struct cmd_list_element
*unsethistlist
;
240 /* Chain containing all defined maintenance subcommands. */
243 struct cmd_list_element
*maintenancelist
;
246 /* Chain containing all defined "maintenance info" subcommands. */
249 struct cmd_list_element
*maintenanceinfolist
;
252 /* Chain containing all defined "maintenance print" subcommands. */
255 struct cmd_list_element
*maintenanceprintlist
;
258 struct cmd_list_element
*setprintlist
;
260 struct cmd_list_element
*showprintlist
;
262 struct cmd_list_element
*setchecklist
;
264 struct cmd_list_element
*showchecklist
;
266 /* stdio stream that command input is being read from. Set to stdin normally.
267 Set by source_command to the file we are sourcing. Set to NULL if we are
268 executing a user-defined command. */
272 /* Current working directory. */
274 char *current_directory
;
276 /* The directory name is actually stored here (usually). */
277 char gdb_dirbuf
[1024];
279 /* Function to call before reading a command, if nonzero.
280 The function receives two args: an input stream,
281 and a prompt string. */
283 void (*window_hook
) PARAMS ((FILE *, char *));
288 /* gdb prints this when reading a command interactively */
291 /* Buffer used for reading command lines, and the size
292 allocated for it so far. */
297 /* Nonzero if the current command is modified by "server ". This
298 affects things like recording into the command history, comamnds
299 repeating on RETURN, etc. This is so a user interface (emacs, GUI,
300 whatever) can issue its own commands and also send along commands
301 from the user, and have the user not notice that the user interface
302 is issuing commands too. */
305 /* Baud rate specified for talking to serial target systems. Default
306 is left as -1, so targets can choose their own defaults. */
307 /* FIXME: This means that "show remotebaud" and gr_files_info can print -1
308 or (unsigned int)-1. This is a Bad User Interface. */
312 /* Non-zero tells remote* modules to output debugging info. */
314 int remote_debug
= 0;
316 /* Level of control structure. */
317 static int control_level
;
319 /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */
323 #define STOP_SIGNAL SIGTSTP
324 static void stop_sig
PARAMS ((int));
328 /* Some System V have job control but not sigsetmask(). */
329 #if !defined (HAVE_SIGSETMASK)
331 #define HAVE_SIGSETMASK 1
333 #define HAVE_SIGSETMASK 0
337 #if 0 == (HAVE_SIGSETMASK)
338 #define sigsetmask(n)
341 /* Hooks for alternate command interfaces. */
343 /* Called after most modules have been initialized, but before taking users
346 void (*init_ui_hook
) PARAMS ((void));
348 /* Called instead of command_loop at top level. Can be invoked via
349 return_to_top_level. */
351 void (*command_loop_hook
) PARAMS ((void));
353 /* Called instead of fputs for all output. */
355 void (*fputs_unfiltered_hook
) PARAMS ((const char *linebuffer
));
357 /* Called from print_frame_info to list the line we stopped in. */
359 void (*print_frame_info_listing_hook
) PARAMS ((struct symtab
*s
, int line
,
360 int stopline
, int noerror
));
361 /* Replaces most of query. */
363 int (*query_hook
) PARAMS (());
365 /* Called from gdb_flush to flush output. */
367 void (*flush_hook
) PARAMS ((FILE *stream
));
369 /* Called as appropriate to notify the interface of the specified breakpoint
372 void (*create_breakpoint_hook
) PARAMS ((struct breakpoint
*bpt
));
373 void (*delete_breakpoint_hook
) PARAMS ((struct breakpoint
*bpt
));
374 void (*enable_breakpoint_hook
) PARAMS ((struct breakpoint
*bpt
));
375 void (*disable_breakpoint_hook
) PARAMS ((struct breakpoint
*bpt
));
377 /* Called during long calculations to allow GUI to repair window damage, and to
378 check for stop buttons, etc... */
380 void (*interactive_hook
) PARAMS ((void));
382 /* Called when going to wait for the target. Usually allows the GUI to run
383 while waiting for target events. */
385 int (*target_wait_hook
) PARAMS ((int pid
, struct target_waitstatus
*status
));
387 /* Used by UI as a wrapper around command execution. May do various things
388 like enabling/disabling buttons, etc... */
390 void (*call_command_hook
) PARAMS ((struct cmd_list_element
*c
, char *cmd
,
393 /* Where to go for return_to_top_level (RETURN_ERROR). */
394 jmp_buf error_return
;
395 /* Where to go for return_to_top_level (RETURN_QUIT). */
398 /* Return for reason REASON. This generally gets back to the command
399 loop, but can be caught via catch_errors. */
402 return_to_top_level (reason
)
403 enum return_reason reason
;
408 /* Perhaps it would be cleaner to do this via the cleanup chain (not sure
409 I can think of a reason why that is vital, though). */
410 bpstat_clear_actions(stop_bpstat
); /* Clear queued breakpoint commands */
412 disable_current_display ();
413 do_cleanups (ALL_CLEANUPS
);
415 if (annotation_level
> 1)
426 (NORETURN
void) longjmp
427 (reason
== RETURN_ERROR
? error_return
: quit_return
, 1);
430 /* Call FUNC with arg ARGS, catching any errors. If there is no
431 error, return the value returned by FUNC. If there is an error,
432 print ERRSTRING, print the specific error message, then return
435 Must not be called with immediate_quit in effect (bad things might
436 happen, say we got a signal in the middle of a memcpy to quit_return).
437 This is an OK restriction; with very few exceptions immediate_quit can
438 be replaced by judicious use of QUIT.
440 MASK specifies what to catch; it is normally set to
441 RETURN_MASK_ALL, if for no other reason than that the code which
442 calls catch_errors might not be set up to deal with a quit which
443 isn't caught. But if the code can deal with it, it generally
444 should be RETURN_MASK_ERROR, unless for some reason it is more
445 useful to abort only the portion of the operation inside the
446 catch_errors. Note that quit should return to the command line
447 fairly quickly, even if some further processing is being done. */
450 catch_errors (func
, args
, errstring
, mask
)
451 int (*func
) PARAMS ((char *));
460 struct cleanup
*saved_cleanup_chain
;
461 char *saved_error_pre_print
;
463 saved_cleanup_chain
= save_cleanups ();
464 saved_error_pre_print
= error_pre_print
;
466 if (mask
& RETURN_MASK_ERROR
)
467 memcpy ((char *)saved_error
, (char *)error_return
, sizeof (jmp_buf));
468 if (mask
& RETURN_MASK_QUIT
)
469 memcpy (saved_quit
, quit_return
, sizeof (jmp_buf));
470 error_pre_print
= errstring
;
472 if (setjmp (tmp_jmp
) == 0)
474 if (mask
& RETURN_MASK_ERROR
)
475 memcpy (error_return
, tmp_jmp
, sizeof (jmp_buf));
476 if (mask
& RETURN_MASK_QUIT
)
477 memcpy (quit_return
, tmp_jmp
, sizeof (jmp_buf));
478 val
= (*func
) (args
);
483 restore_cleanups (saved_cleanup_chain
);
485 error_pre_print
= saved_error_pre_print
;
486 if (mask
& RETURN_MASK_ERROR
)
487 memcpy (error_return
, saved_error
, sizeof (jmp_buf));
488 if (mask
& RETURN_MASK_QUIT
)
489 memcpy (quit_return
, saved_quit
, sizeof (jmp_buf));
493 /* Handler for SIGHUP. */
499 catch_errors (quit_cover
, NULL
,
500 "Could not kill the program being debugged", RETURN_MASK_ALL
);
501 signal (SIGHUP
, SIG_DFL
);
502 kill (getpid (), SIGHUP
);
505 /* Just a little helper function for disconnect(). */
511 caution
= 0; /* Throw caution to the wind -- we're exiting.
512 This prevents asking the user dumb questions. */
513 quit_command((char *)0, 0);
517 /* Line number we are currently in in a file which is being sourced. */
518 static int source_line_number
;
520 /* Name of the file we are sourcing. */
521 static char *source_file_name
;
523 /* Buffer containing the error_pre_print used by the source stuff.
525 static char *source_error
;
526 static int source_error_allocated
;
528 /* Something to glom on to the start of error_pre_print if source_file_name
530 static char *source_pre_error
;
532 /* Clean up on error during a "source" command (or execution of a
533 user-defined command). */
536 source_cleanup (stream
)
539 /* Restore the previous input stream. */
543 /* Read commands from STREAM. */
545 read_command_file (stream
)
548 struct cleanup
*cleanups
;
550 cleanups
= make_cleanup (source_cleanup
, instream
);
553 do_cleanups (cleanups
);
556 extern void init_proc ();
561 /* Run the init function of each source file */
563 getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
));
564 current_directory
= gdb_dirbuf
;
566 init_cmd_lists (); /* This needs to be done first */
567 initialize_targets (); /* Setup target_terminal macros for utils.c */
568 initialize_utils (); /* Make errors and warnings possible */
569 initialize_all_files ();
570 init_main (); /* But that omits this file! Do it now */
575 /* We need a default language for parsing expressions, so simple things like
576 "set width 0" won't fail if no language is explicitly set in a config file
577 or implicitly set by reading an executable during startup. */
578 set_language (language_c
);
579 expected_language
= current_language
; /* don't warn about the change. */
585 /* Allocate, initialize a new command line structure for one of the
586 control commands (if/while). */
588 static struct command_line
*
589 build_command_line (type
, args
)
590 enum command_control_type type
;
593 struct command_line
*cmd
;
595 cmd
= (struct command_line
*)xmalloc (sizeof (struct command_line
));
597 cmd
->control_type
= type
;
601 = (struct command_line
**)xmalloc (sizeof (struct command_line
*)
603 memset (cmd
->body_list
, 0, sizeof (struct command_line
*) * cmd
->body_count
);
604 cmd
->line
= savestring (args
, strlen (args
));
608 /* Build and return a new command structure for the control commands
609 such as "if" and "while". */
611 static struct command_line
*
612 get_command_line (type
, arg
)
613 enum command_control_type type
;
616 struct command_line
*cmd
;
617 struct cleanup
*old_chain
= NULL
;
619 /* Allocate and build a new command line structure. */
620 cmd
= build_command_line (type
, arg
);
622 old_chain
= make_cleanup (free_command_lines
, &cmd
);
624 /* Read in the body of this command. */
625 if (recurse_read_control_structure (cmd
) == invalid_control
)
627 warning ("error reading in control structure\n");
628 do_cleanups (old_chain
);
632 discard_cleanups (old_chain
);
636 /* Execute the command in CMD. */
638 static enum command_control_type
639 execute_control_command (cmd
)
640 struct command_line
*cmd
;
642 struct expression
*expr
;
643 struct command_line
*current
;
644 struct cleanup
*old_chain
= 0;
645 struct cleanup
*tmp_chain
;
648 enum command_control_type ret
;
650 switch (cmd
->control_type
)
653 /* A simple command, execute it and return. */
654 execute_command (cmd
->line
, 0);
655 return cmd
->control_type
;
657 case continue_control
:
659 /* Return for "continue", and "break" so we can either
660 continue the loop at the top, or break out. */
661 return cmd
->control_type
;
665 /* Parse the loop control expression for the while statement. */
666 expr
= parse_expression (cmd
->line
);
667 tmp_chain
= make_cleanup (free_current_contents
, &expr
);
669 old_chain
= tmp_chain
;
671 ret
= simple_control
;
674 /* Keep iterating so long as the expression is true. */
677 /* Evaluate the expression. */
678 val
= evaluate_expression (expr
);
680 /* If the value is false, then break out of the loop. */
681 if (!value_true (val
))
684 /* Execute the body of the while statement. */
685 current
= *cmd
->body_list
;
688 ret
= execute_control_command (current
);
690 /* If we got an error, or a "break" command, then stop
692 if (ret
== invalid_control
|| ret
== break_control
)
698 /* If we got a "continue" command, then restart the loop
700 if (ret
== continue_control
)
703 /* Get the next statement. */
704 current
= current
->next
;
708 /* Reset RET so that we don't recurse the break all the way down. */
709 if (ret
== break_control
)
710 ret
= simple_control
;
717 /* Parse the conditional for the if statement. */
718 expr
= parse_expression (cmd
->line
);
719 old_chain
= make_cleanup (free_current_contents
, &expr
);
722 ret
= simple_control
;
724 /* Evaluate the conditional. */
725 val
= evaluate_expression (expr
);
727 /* Choose which arm to take commands from based on the value of the
728 conditional expression. */
729 if (value_true (val
))
730 current
= *cmd
->body_list
;
731 else if (cmd
->body_count
== 2)
732 current
= *(cmd
->body_list
+ 1);
734 /* Execute commands in the given arm. */
737 ret
= execute_control_command (current
);
739 /* If we got an error, get out. */
740 if (ret
!= simple_control
)
743 /* Get the next statement in the body. */
744 current
= current
->next
;
750 warning ("Invalid control type in command structure.");
751 return invalid_control
;
755 do_cleanups (old_chain
);
760 /* "while" command support. Executes a body of statements while the
761 loop condition is nonzero. */
764 while_command (arg
, from_tty
)
768 struct command_line
*command
= NULL
;
771 command
= get_command_line (while_control
, arg
);
776 execute_control_command (command
);
777 free_command_lines (&command
);
780 /* "if" command support. Execute either the true or false arm depending
781 on the value of the if conditional. */
784 if_command (arg
, from_tty
)
788 struct command_line
*command
= NULL
;
791 command
= get_command_line (if_control
, arg
);
796 execute_control_command (command
);
797 free_command_lines (&command
);
801 execute_user_command (c
, args
)
802 struct cmd_list_element
*c
;
805 register struct command_line
*cmdlines
;
806 struct cleanup
*old_chain
;
807 enum command_control_type ret
;
810 error ("User-defined commands cannot take arguments.");
812 cmdlines
= c
->user_commands
;
817 /* Set the instream to 0, indicating execution of a
818 user-defined function. */
819 old_chain
= make_cleanup (source_cleanup
, instream
);
820 instream
= (FILE *) 0;
823 ret
= execute_control_command (cmdlines
);
824 if (ret
!= simple_control
&& ret
!= break_control
)
826 warning ("Error in control structure.\n");
829 cmdlines
= cmdlines
->next
;
831 do_cleanups (old_chain
);
834 /* Execute the line P as a command.
835 Pass FROM_TTY as second argument to the defining function. */
838 execute_command (p
, from_tty
)
842 register struct cmd_list_element
*c
;
843 register enum language flang
;
844 static int warned
= 0;
848 /* This can happen when command_line_input hits end of file. */
852 while (*p
== ' ' || *p
== '\t') p
++;
857 c
= lookup_cmd (&p
, cmdlist
, "", 0, 1);
858 /* Pass null arg rather than an empty one. */
861 /* If this command has been hooked, run the hook first. */
863 execute_user_command (c
->hook
, (char *)0);
865 if (c
->class == class_user
)
866 execute_user_command (c
, arg
);
867 else if (c
->type
== set_cmd
|| c
->type
== show_cmd
)
868 do_setshow_command (arg
, from_tty
& caution
, c
);
869 else if (c
->function
.cfunc
== NO_FUNCTION
)
870 error ("That is not a command, just a help topic.");
871 else if (call_command_hook
)
872 call_command_hook (c
, arg
, from_tty
& caution
);
874 (*c
->function
.cfunc
) (arg
, from_tty
& caution
);
877 /* Tell the user if the language has changed (except first time). */
878 if (current_language
!= expected_language
)
880 if (language_mode
== language_mode_auto
) {
881 language_info (1); /* Print what changed. */
886 /* Warn the user if the working language does not match the
887 language of the current frame. Only warn the user if we are
888 actually running the program, i.e. there is a stack. */
889 /* FIXME: This should be cacheing the frame and only running when
890 the frame changes. */
891 if (target_has_stack
)
893 flang
= get_frame_language ();
895 && flang
!= language_unknown
896 && flang
!= current_language
->la_language
)
898 printf_filtered ("%s\n", lang_frame_mismatch_warn
);
906 command_loop_marker (foo
)
911 /* Read commands from `instream' and execute them
912 until end of file or error reading instream. */
916 struct cleanup
*old_chain
;
918 int stdin_is_tty
= ISATTY (stdin
);
920 while (!feof (instream
))
922 if (window_hook
&& instream
== stdin
)
923 (*window_hook
) (instream
, prompt
);
926 if (instream
== stdin
&& stdin_is_tty
)
927 reinitialize_more_filter ();
928 old_chain
= make_cleanup (command_loop_marker
, 0);
929 command
= command_line_input (instream
== stdin
? prompt
: (char *) NULL
,
930 instream
== stdin
, "prompt");
933 execute_command (command
, instream
== stdin
);
934 /* Do any commands attached to breakpoint we stopped at. */
935 bpstat_do_actions (&stop_bpstat
);
936 do_cleanups (old_chain
);
940 /* Commands call this if they do not want to be repeated by null lines. */
948 /* If we aren't reading from standard input, we are saving the last
949 thing read from stdin in line and don't want to delete it. Null lines
950 won't repeat here in any case. */
951 if (instream
== stdin
)
955 /* Read a line from the stream "instream" without command line editing.
957 It prints PRROMPT once at the start.
958 Action is compatible with "readline", e.g. space for the result is
959 malloc'd and should be freed by the caller.
961 A NULL return means end of file. */
963 gdb_readline (prrompt
)
969 int result_size
= 80;
973 /* Don't use a _filtered function here. It causes the assumed
974 character position to be off, since the newline we read from
975 the user is not accounted for. */
976 fputs_unfiltered (prrompt
, gdb_stdout
);
977 /* start-sanitize-mpw */
979 /* Move to a new line so the entered line doesn't have a prompt
980 on the front of it. */
981 fputs_unfiltered ("\n", gdb_stdout
);
983 /* end-sanitize-mpw */
984 gdb_flush (gdb_stdout
);
987 result
= (char *) xmalloc (result_size
);
991 /* Read from stdin if we are executing a user defined command.
992 This is the right thing for prompt_for_continue, at least. */
993 c
= fgetc (instream
? instream
: stdin
);
998 /* The last line does not end with a newline. Return it, and
999 if we are called again fgetc will still return EOF and
1000 we'll return NULL then. */
1009 result
[input_index
++] = c
;
1010 while (input_index
>= result_size
)
1013 result
= (char *) xrealloc (result
, result_size
);
1017 result
[input_index
++] = '\0';
1021 /* Variables which control command line editing and history
1022 substitution. These variables are given default values at the end
1024 static int command_editing_p
;
1025 static int history_expansion_p
;
1026 static int write_history_p
;
1027 static int history_size
;
1028 static char *history_filename
;
1030 /* readline uses the word breaks for two things:
1031 (1) In figuring out where to point the TEXT parameter to the
1032 rl_completion_entry_function. Since we don't use TEXT for much,
1033 it doesn't matter a lot what the word breaks are for this purpose, but
1034 it does affect how much stuff M-? lists.
1035 (2) If one of the matches contains a word break character, readline
1036 will quote it. That's why we switch between
1037 gdb_completer_word_break_characters and
1038 gdb_completer_command_word_break_characters. I'm not sure when
1039 we need this behavior (perhaps for funky characters in C++ symbols?). */
1041 /* Variables which are necessary for fancy command line editing. */
1042 char *gdb_completer_word_break_characters
=
1043 " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
1045 /* When completing on command names, we remove '-' from the list of
1046 word break characters, since we use it in command names. If the
1047 readline library sees one in any of the current completion strings,
1048 it thinks that the string needs to be quoted and automatically supplies
1050 char *gdb_completer_command_word_break_characters
=
1051 " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,";
1053 /* Characters that can be used to quote completion strings. Note that we
1054 can't include '"' because the gdb C parser treats such quoted sequences
1056 char *gdb_completer_quote_characters
=
1059 /* Functions that are used as part of the fancy command line editing. */
1061 /* This can be used for functions which don't want to complete on symbols
1062 but don't want to complete on anything else either. */
1065 noop_completer (text
, prefix
)
1072 /* Complete on filenames. */
1074 filename_completer (text
, word
)
1078 /* From readline. */
1079 extern char *filename_completion_function ();
1080 int subsequent_name
;
1082 int return_val_used
;
1083 int return_val_alloced
;
1085 return_val_used
= 0;
1086 /* Small for testing. */
1087 return_val_alloced
= 1;
1088 return_val
= (char **) xmalloc (return_val_alloced
* sizeof (char *));
1090 subsequent_name
= 0;
1094 p
= filename_completion_function (text
, subsequent_name
);
1095 if (return_val_used
>= return_val_alloced
)
1097 return_val_alloced
*= 2;
1099 (char **) xrealloc (return_val
,
1100 return_val_alloced
* sizeof (char *));
1104 return_val
[return_val_used
++] = p
;
1107 /* Like emacs, don't complete on old versions. Especially useful
1108 in the "source" command. */
1109 if (p
[strlen (p
) - 1] == '~')
1115 /* Return exactly p. */
1116 return_val
[return_val_used
++] = p
;
1117 else if (word
> text
)
1119 /* Return some portion of p. */
1120 q
= xmalloc (strlen (p
) + 5);
1121 strcpy (q
, p
+ (word
- text
));
1122 return_val
[return_val_used
++] = q
;
1127 /* Return some of TEXT plus p. */
1128 q
= xmalloc (strlen (p
) + (text
- word
) + 5);
1129 strncpy (q
, word
, text
- word
);
1130 q
[text
- word
] = '\0';
1132 return_val
[return_val_used
++] = q
;
1136 subsequent_name
= 1;
1139 /* There is no way to do this just long enough to affect quote inserting
1140 without also affecting the next completion. This should be fixed in
1142 /* Insure that readline does the right thing
1143 with respect to inserting quotes. */
1144 rl_completer_word_break_characters
= "";
1149 /* Here are some useful test cases for completion. FIXME: These should
1150 be put in the test suite. They should be tested with both M-? and TAB.
1152 "show output-" "radix"
1153 "show output" "-radix"
1154 "p" ambiguous (commands starting with p--path, print, printf, etc.)
1155 "p " ambiguous (all symbols)
1156 "info t foo" no completions
1157 "info t " no completions
1158 "info t" ambiguous ("info target", "info terminal", etc.)
1159 "info ajksdlfk" no completions
1160 "info ajksdlfk " no completions
1162 "info " ambiguous (all info commands)
1163 "p \"a" no completions (string constant)
1164 "p 'a" ambiguous (all symbols starting with a)
1165 "p b-a" ambiguous (all symbols starting with a)
1166 "p b-" ambiguous (all symbols)
1167 "file Make" "file" (word break hard to screw up here)
1168 "file ../gdb.stabs/we" "ird" (needs to not break word at slash)
1171 /* Generate completions one by one for the completer. Each time we are
1172 called return another potential completion to the caller. The function
1173 is misnamed; it just completes on commands or passes the buck to the
1174 command's completer function; the stuff specific to symbol completion
1175 is in make_symbol_completion_list.
1177 TEXT is readline's idea of the "word" we are looking at; we don't really
1178 like readline's ideas about word breaking so we ignore it.
1180 MATCHES is the number of matches that have currently been collected from
1181 calling this completion function. When zero, then we need to initialize,
1182 otherwise the initialization has already taken place and we can just
1183 return the next potential completion string.
1185 Returns NULL if there are no more completions, else a pointer to a string
1186 which is a possible completion.
1188 RL_LINE_BUFFER is available to be looked at; it contains the entire text
1189 of the line. RL_POINT is the offset in that line of the cursor. You
1190 should pretend that the line ends at RL_POINT. */
1193 symbol_completion_function (text
, matches
)
1197 static char **list
= (char **)NULL
; /* Cache of completions */
1198 static int index
; /* Next cached completion */
1199 char *output
= NULL
;
1200 char *tmp_command
, *p
;
1201 /* Pointer within tmp_command which corresponds to text. */
1203 struct cmd_list_element
*c
, *result_list
;
1207 /* The caller is beginning to accumulate a new set of completions, so
1208 we need to find all of them now, and cache them for returning one at
1209 a time on future calls. */
1213 /* Free the storage used by LIST, but not by the strings inside.
1214 This is because rl_complete_internal () frees the strings. */
1220 /* Choose the default set of word break characters to break completions.
1221 If we later find out that we are doing completions on command strings
1222 (as opposed to strings supplied by the individual command completer
1223 functions, which can be any string) then we will switch to the
1224 special word break set for command strings, which leaves out the
1225 '-' character used in some commands. */
1227 rl_completer_word_break_characters
=
1228 gdb_completer_word_break_characters
;
1230 /* Decide whether to complete on a list of gdb commands or on symbols. */
1231 tmp_command
= (char *) alloca (rl_point
+ 1);
1234 strncpy (tmp_command
, rl_line_buffer
, rl_point
);
1235 tmp_command
[rl_point
] = '\0';
1236 /* Since text always contains some number of characters leading up
1237 to rl_point, we can find the equivalent position in tmp_command
1238 by subtracting that many characters from the end of tmp_command. */
1239 word
= tmp_command
+ rl_point
- strlen (text
);
1243 /* An empty line we want to consider ambiguous; that is, it
1244 could be any command. */
1245 c
= (struct cmd_list_element
*) -1;
1250 c
= lookup_cmd_1 (&p
, cmdlist
, &result_list
, 1);
1253 /* Move p up to the next interesting thing. */
1254 while (*p
== ' ' || *p
== '\t')
1261 /* It is an unrecognized command. So there are no
1262 possible completions. */
1265 else if (c
== (struct cmd_list_element
*) -1)
1269 /* lookup_cmd_1 advances p up to the first ambiguous thing, but
1270 doesn't advance over that thing itself. Do so now. */
1272 while (*q
&& (isalnum (*q
) || *q
== '-' || *q
== '_'))
1274 if (q
!= tmp_command
+ rl_point
)
1276 /* There is something beyond the ambiguous
1277 command, so there are no possible completions. For
1278 example, "info t " or "info t foo" does not complete
1279 to anything, because "info t" can be "info target" or
1285 /* We're trying to complete on the command which was ambiguous.
1286 This we can deal with. */
1289 list
= complete_on_cmdlist (*result_list
->prefixlist
, p
,
1294 list
= complete_on_cmdlist (cmdlist
, p
, word
);
1296 /* Insure that readline does the right thing with respect to
1297 inserting quotes. */
1298 rl_completer_word_break_characters
=
1299 gdb_completer_command_word_break_characters
;
1304 /* We've recognized a full command. */
1306 if (p
== tmp_command
+ rl_point
)
1308 /* There is no non-whitespace in the line beyond the command. */
1310 if (p
[-1] == ' ' || p
[-1] == '\t')
1312 /* The command is followed by whitespace; we need to complete
1313 on whatever comes after command. */
1316 /* It is a prefix command; what comes after it is
1317 a subcommand (e.g. "info "). */
1318 list
= complete_on_cmdlist (*c
->prefixlist
, p
, word
);
1320 /* Insure that readline does the right thing
1321 with respect to inserting quotes. */
1322 rl_completer_word_break_characters
=
1323 gdb_completer_command_word_break_characters
;
1327 /* It is a normal command; what comes after it is
1328 completed by the command's completer function. */
1329 list
= (*c
->completer
) (p
, word
);
1334 /* The command is not followed by whitespace; we need to
1335 complete on the command itself. e.g. "p" which is a
1336 command itself but also can complete to "print", "ptype"
1340 /* Find the command we are completing on. */
1342 while (q
> tmp_command
)
1344 if (isalnum (q
[-1]) || q
[-1] == '-' || q
[-1] == '_')
1350 list
= complete_on_cmdlist (result_list
, q
, word
);
1352 /* Insure that readline does the right thing
1353 with respect to inserting quotes. */
1354 rl_completer_word_break_characters
=
1355 gdb_completer_command_word_break_characters
;
1360 /* There is non-whitespace beyond the command. */
1362 if (c
->prefixlist
&& !c
->allow_unknown
)
1364 /* It is an unrecognized subcommand of a prefix command,
1365 e.g. "info adsfkdj". */
1370 /* It is a normal command. */
1371 list
= (*c
->completer
) (p
, word
);
1377 /* If we found a list of potential completions during initialization then
1378 dole them out one at a time. The vector of completions is NULL
1379 terminated, so after returning the last one, return NULL (and continue
1380 to do so) each time we are called after that, until a new list is
1385 output
= list
[index
];
1393 /* Can't do this because readline hasn't yet checked the word breaks
1394 for figuring out whether to insert a quote. */
1396 /* Make sure the word break characters are set back to normal for the
1397 next time that readline tries to complete something. */
1398 rl_completer_word_break_characters
=
1399 gdb_completer_word_break_characters
;
1405 /* Skip over a possibly quoted word (as defined by the quote characters
1406 and word break characters the completer uses). Returns pointer to the
1407 location after the "word". */
1413 char quote_char
= '\0';
1416 for (scan
= str
; *scan
!= '\0'; scan
++)
1418 if (quote_char
!= '\0')
1420 /* Ignore everything until the matching close quote char */
1421 if (*scan
== quote_char
)
1423 /* Found matching close quote. */
1428 else if (strchr (gdb_completer_quote_characters
, *scan
))
1430 /* Found start of a quoted string. */
1433 else if (strchr (gdb_completer_word_break_characters
, *scan
))
1447 #if STOP_SIGNAL == SIGTSTP
1448 signal (SIGTSTP
, SIG_DFL
);
1450 kill (getpid (), SIGTSTP
);
1451 signal (SIGTSTP
, stop_sig
);
1453 signal (STOP_SIGNAL
, stop_sig
);
1455 printf_unfiltered ("%s", prompt
);
1456 gdb_flush (gdb_stdout
);
1458 /* Forget about any previous command -- null line now will do nothing. */
1461 #endif /* STOP_SIGNAL */
1463 /* Initialize signal handlers. */
1473 signal (SIGINT
, request_quit
);
1475 /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get
1476 passed to the inferior, which we don't want. It would be
1477 possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but
1478 on BSD4.3 systems using vfork, that can affect the
1479 GDB process as well as the inferior (the signal handling tables
1480 might be in memory, shared between the two). Since we establish
1481 a handler for SIGQUIT, when we call exec it will set the signal
1482 to SIG_DFL for us. */
1483 signal (SIGQUIT
, do_nothing
);
1484 if (signal (SIGHUP
, do_nothing
) != SIG_IGN
)
1485 signal (SIGHUP
, disconnect
);
1486 signal (SIGFPE
, float_handler
);
1488 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
1489 signal (SIGWINCH
, SIGWINCH_HANDLER
);
1493 /* Read one line from the command input stream `instream'
1494 into the local static buffer `linebuffer' (whose current length
1496 The buffer is made bigger as necessary.
1497 Returns the address of the start of the line.
1499 NULL is returned for end of file.
1501 *If* the instream == stdin & stdin is a terminal, the line read
1502 is copied into the file line saver (global var char *line,
1503 length linesize) so that it can be duplicated.
1505 This routine either uses fancy command line editing or
1506 simple input as the user has requested. */
1509 command_line_input (prrompt
, repeat
, annotation_suffix
)
1512 char *annotation_suffix
;
1514 static char *linebuffer
= 0;
1515 static unsigned linelength
= 0;
1519 char *local_prompt
= prrompt
;
1524 if (annotation_level
> 1 && instream
== stdin
)
1526 local_prompt
= alloca ((prrompt
== NULL
? 0 : strlen (prrompt
))
1527 + strlen (annotation_suffix
) + 40);
1528 if (prrompt
== NULL
)
1529 local_prompt
[0] = '\0';
1531 strcpy (local_prompt
, prrompt
);
1532 strcat (local_prompt
, "\n\032\032");
1533 strcat (local_prompt
, annotation_suffix
);
1534 strcat (local_prompt
, "\n");
1537 if (linebuffer
== 0)
1540 linebuffer
= (char *) xmalloc (linelength
);
1545 /* Control-C quits instantly if typed while in this loop
1546 since it should not wait until the user types a newline. */
1550 signal (STOP_SIGNAL
, stop_sig
);
1555 /* Make sure that all output has been output. Some machines may let
1556 you get away with leaving out some of the gdb_flush, but not all. */
1558 gdb_flush (gdb_stdout
);
1559 gdb_flush (gdb_stderr
);
1561 if (source_file_name
!= NULL
)
1563 ++source_line_number
;
1564 sprintf (source_error
,
1565 "%s%s:%d: Error in sourced command file:\n",
1568 source_line_number
);
1569 error_pre_print
= source_error
;
1572 if (annotation_level
> 1 && instream
== stdin
)
1574 printf_unfiltered ("\n\032\032pre-");
1575 printf_unfiltered (annotation_suffix
);
1576 printf_unfiltered ("\n");
1579 /* Don't use fancy stuff if not talking to stdin. */
1580 if (command_editing_p
&& instream
== stdin
1581 && ISATTY (instream
))
1582 rl
= readline (local_prompt
);
1584 rl
= gdb_readline (local_prompt
);
1586 if (annotation_level
> 1 && instream
== stdin
)
1588 printf_unfiltered ("\n\032\032post-");
1589 printf_unfiltered (annotation_suffix
);
1590 printf_unfiltered ("\n");
1593 if (!rl
|| rl
== (char *) EOF
)
1598 if (strlen(rl
) + 1 + (p
- linebuffer
) > linelength
)
1600 linelength
= strlen(rl
) + 1 + (p
- linebuffer
);
1601 nline
= (char *) xrealloc (linebuffer
, linelength
);
1602 p
+= nline
- linebuffer
;
1606 /* Copy line. Don't copy null at end. (Leaves line alone
1607 if this was just a newline) */
1611 free (rl
); /* Allocated in readline. */
1613 if (p
== linebuffer
|| *(p
- 1) != '\\')
1616 p
--; /* Put on top of '\'. */
1617 local_prompt
= (char *) 0;
1622 signal (STOP_SIGNAL
, SIG_DFL
);
1629 #define SERVER_COMMAND_LENGTH 7
1631 (p
- linebuffer
> SERVER_COMMAND_LENGTH
)
1632 && STREQN (linebuffer
, "server ", SERVER_COMMAND_LENGTH
);
1635 /* Note that we don't set `line'. Between this and the check in
1636 dont_repeat, this insures that repeating will still do the
1639 return linebuffer
+ SERVER_COMMAND_LENGTH
;
1642 /* Do history expansion if that is wished. */
1643 if (history_expansion_p
&& instream
== stdin
1644 && ISATTY (instream
))
1646 char *history_value
;
1649 *p
= '\0'; /* Insert null now. */
1650 expanded
= history_expand (linebuffer
, &history_value
);
1653 /* Print the changes. */
1654 printf_unfiltered ("%s\n", history_value
);
1656 /* If there was an error, call this function again. */
1659 free (history_value
);
1660 return command_line_input (prrompt
, repeat
, annotation_suffix
);
1662 if (strlen (history_value
) > linelength
)
1664 linelength
= strlen (history_value
) + 1;
1665 linebuffer
= (char *) xrealloc (linebuffer
, linelength
);
1667 strcpy (linebuffer
, history_value
);
1668 p
= linebuffer
+ strlen(linebuffer
);
1669 free (history_value
);
1673 /* If we just got an empty line, and that is supposed
1674 to repeat the previous command, return the value in the
1678 if (p
== linebuffer
)
1681 while (*p1
== ' ' || *p1
== '\t')
1689 /* Add line to history if appropriate. */
1690 if (instream
== stdin
1691 && ISATTY (stdin
) && *linebuffer
)
1692 add_history (linebuffer
);
1694 /* Note: lines consisting solely of comments are added to the command
1695 history. This is useful when you type a command, and then
1696 realize you don't want to execute it quite yet. You can comment
1697 out the command and then later fetch it from the value history
1698 and remove the '#'. The kill ring is probably better, but some
1699 people are in the habit of commenting things out. */
1701 while ((c
= *p1
++) != '\0')
1704 while ((c
= *p1
++) != '"')
1706 /* Make sure an escaped '"' doesn't make us think the string
1714 while ((c
= *p1
++) != '\'')
1716 /* Make sure an escaped '\'' doesn't make us think the string
1725 /* Found a comment. */
1731 /* Save into global buffer if appropriate. */
1734 if (linelength
> linesize
)
1736 line
= xrealloc (line
, linelength
);
1737 linesize
= linelength
;
1739 strcpy (line
, linebuffer
);
1747 /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH
1748 code bodies. This is typically used when we encounter an "else"
1749 clause for an "if" command. */
1752 realloc_body_list (command
, new_length
)
1753 struct command_line
*command
;
1757 struct command_line
**body_list
;
1759 n
= command
->body_count
;
1761 /* Nothing to do? */
1762 if (new_length
<= n
)
1765 body_list
= (struct command_line
**)
1766 xmalloc (sizeof (struct command_line
*) * new_length
);
1768 memcpy (body_list
, command
->body_list
, sizeof (struct command_line
*) * n
);
1770 free (command
->body_list
);
1771 command
->body_list
= body_list
;
1772 command
->body_count
= new_length
;
1775 /* Read one line from the input stream. If the command is an "else" or
1776 "end", return such an indication to the caller. */
1778 static enum misc_command_type
1779 read_next_line (command
)
1780 struct command_line
**command
;
1782 char *p
, *p1
, *prompt_ptr
, control_prompt
[256];
1785 if (control_level
>= 254)
1786 error ("Control nesting too deep!\n");
1788 /* Set a prompt based on the nesting of the control commands. */
1789 if (instream
== stdin
)
1791 for (i
= 0; i
< control_level
; i
++)
1792 control_prompt
[i
] = ' ';
1793 control_prompt
[i
] = '>';
1794 control_prompt
[i
+1] = '\0';
1795 prompt_ptr
= (char *)&control_prompt
[0];
1800 p
= command_line_input (prompt_ptr
, instream
== stdin
, NULL
);
1802 /* Not sure what to do here. */
1806 /* Strip leading and trailing whitespace. */
1807 while (*p
== ' ' || *p
== '\t')
1810 p1
= p
+ strlen (p
);
1811 while (p1
!= p
&& (p1
[-1] == ' ' || p1
[-1] == '\t'))
1814 /* Blanks and comments don't really do anything, but we need to
1815 distinguish them from else, end and other commands which can be
1817 if (p1
== p
|| p
[0] == '#')
1820 /* Is this the end of a simple, while, or if control structure? */
1821 if (p1
- p
== 3 && !strncmp (p
, "end", 3))
1824 /* Is the else clause of an if control structure? */
1825 if (p1
- p
== 4 && !strncmp (p
, "else", 4))
1826 return else_command
;
1828 /* Check for while, if, break, continue, etc and build a new command
1829 line structure for them. */
1830 if (p1
- p
> 5 && !strncmp (p
, "while", 5))
1831 *command
= build_command_line (while_control
, p
+ 6);
1832 else if (p1
- p
> 2 && !strncmp (p
, "if", 2))
1833 *command
= build_command_line (if_control
, p
+ 3);
1834 else if (p1
- p
== 5 && !strncmp (p
, "loop_break", 5))
1836 *command
= (struct command_line
*)
1837 xmalloc (sizeof (struct command_line
));
1838 (*command
)->next
= NULL
;
1839 (*command
)->line
= NULL
;
1840 (*command
)->control_type
= break_control
;
1841 (*command
)->body_count
= 0;
1842 (*command
)->body_list
= NULL
;
1844 else if (p1
- p
== 8 && !strncmp (p
, "loop_continue", 8))
1846 *command
= (struct command_line
*)
1847 xmalloc (sizeof (struct command_line
));
1848 (*command
)->next
= NULL
;
1849 (*command
)->line
= NULL
;
1850 (*command
)->control_type
= continue_control
;
1851 (*command
)->body_count
= 0;
1852 (*command
)->body_list
= NULL
;
1856 /* A normal command. */
1857 *command
= (struct command_line
*)
1858 xmalloc (sizeof (struct command_line
));
1859 (*command
)->next
= NULL
;
1860 (*command
)->line
= savestring (p
, p1
- p
);
1861 (*command
)->control_type
= simple_control
;
1862 (*command
)->body_count
= 0;
1863 (*command
)->body_list
= NULL
;
1866 /* Nothing special. */
1870 /* Recursively read in the control structures and create a command_line
1873 The parent_control parameter is the control structure in which the
1874 following commands are nested. */
1876 static enum command_control_type
1877 recurse_read_control_structure (current_cmd
)
1878 struct command_line
*current_cmd
;
1880 int current_body
, i
;
1881 enum misc_command_type val
;
1882 enum command_control_type ret
;
1883 struct command_line
**body_ptr
, *child_tail
, *next
;
1884 struct cleanup
*old_chains
, *tmp_chains
;
1890 /* Sanity checks. */
1891 if (current_cmd
->control_type
== simple_control
)
1893 error ("Recursed on a simple control type\n");
1894 return invalid_control
;
1897 if (current_body
> current_cmd
->body_count
)
1899 error ("Allocated body is smaller than this command type needs\n");
1900 return invalid_control
;
1903 /* Read lines from the input stream and build control structures. */
1909 val
= read_next_line (&next
);
1911 /* Just skip blanks and comments. */
1912 if (val
== nop_command
)
1915 if (val
== end_command
)
1917 if (current_cmd
->control_type
== while_control
1918 || current_cmd
->control_type
== if_control
)
1920 /* Success reading an entire control structure. */
1921 ret
= simple_control
;
1926 ret
= invalid_control
;
1931 /* Not the end of a control structure. */
1932 if (val
== else_command
)
1934 if (current_cmd
->control_type
== if_control
1935 && current_body
== 1)
1937 realloc_body_list (current_cmd
, 2);
1944 ret
= invalid_control
;
1951 child_tail
->next
= next
;
1955 /* We have just read the first line of the child's control
1956 structure. From now on, arrange to throw away the line
1957 we have if we quit or get an error. */
1958 body_ptr
= current_cmd
->body_list
;
1959 for (i
= 1; i
< current_body
; i
++)
1964 tmp_chains
= make_cleanup (free_command_lines
, body_ptr
);
1967 old_chains
= tmp_chains
;
1972 /* If the latest line is another control structure, then recurse
1974 if (next
->control_type
== while_control
1975 || next
->control_type
== if_control
)
1978 ret
= recurse_read_control_structure (next
);
1981 if (ret
!= simple_control
)
1987 if (ret
== invalid_control
&& old_chains
)
1988 do_cleanups (old_chains
);
1989 else if (old_chains
)
1990 discard_cleanups (old_chains
);
1996 /* Read lines from the input stream
1997 and accumulate them in a chain of struct command_line's
1998 which is then returned. */
2000 struct command_line
*
2001 read_command_lines ()
2003 struct command_line
*head
, *tail
, *next
;
2004 struct cleanup
*old_chain
;
2005 enum command_control_type ret
;
2006 enum misc_command_type val
;
2013 val
= read_next_line (&next
);
2015 /* Ignore blank lines or comments. */
2016 if (val
== nop_command
)
2019 if (val
== end_command
)
2021 ret
= simple_control
;
2025 if (val
!= ok_command
)
2027 ret
= invalid_control
;
2031 if (next
->control_type
== while_control
2032 || next
->control_type
== if_control
)
2035 ret
= recurse_read_control_structure (next
);
2038 if (ret
== invalid_control
)
2049 old_chain
= make_cleanup (free_command_lines
, &head
);
2058 if (ret
!= invalid_control
)
2060 discard_cleanups (old_chain
);
2064 do_cleanups (old_chain
);
2070 /* Free a chain of struct command_line's. */
2073 free_command_lines (lptr
)
2074 struct command_line
**lptr
;
2076 register struct command_line
*l
= *lptr
;
2077 register struct command_line
*next
;
2078 struct command_line
**blist
;
2083 if (l
->body_count
> 0)
2085 blist
= l
->body_list
;
2086 for (i
= 0; i
< l
->body_count
; i
++, blist
++)
2087 free_command_lines (blist
);
2096 /* Add an element to the list of info subcommands. */
2099 add_info (name
, fun
, doc
)
2101 void (*fun
) PARAMS ((char *, int));
2104 add_cmd (name
, no_class
, fun
, doc
, &infolist
);
2107 /* Add an alias to the list of info subcommands. */
2110 add_info_alias (name
, oldname
, abbrev_flag
)
2115 add_alias_cmd (name
, oldname
, 0, abbrev_flag
, &infolist
);
2118 /* The "info" command is defined as a prefix, with allow_unknown = 0.
2119 Therefore, its own definition is called only for "info" with no args. */
2123 info_command (arg
, from_tty
)
2127 printf_unfiltered ("\"info\" must be followed by the name of an info command.\n");
2128 help_list (infolist
, "info ", -1, gdb_stdout
);
2131 /* The "complete" command is used by Emacs to implement completion. */
2135 complete_command (arg
, from_tty
)
2146 rl_line_buffer
[0] = '\0';
2151 strcpy (rl_line_buffer
, arg
);
2152 rl_point
= strlen (arg
);
2155 for (completion
= symbol_completion_function (rl_line_buffer
, i
= 0);
2157 completion
= symbol_completion_function (rl_line_buffer
, ++i
))
2158 printf_unfiltered ("%s\n", completion
);
2161 /* The "show" command with no arguments shows all the settings. */
2165 show_command (arg
, from_tty
)
2169 cmd_show_list (showlist
, from_tty
, "");
2172 /* Add an element to the list of commands. */
2175 add_com (name
, class, fun
, doc
)
2177 enum command_class
class;
2178 void (*fun
) PARAMS ((char *, int));
2181 add_cmd (name
, class, fun
, doc
, &cmdlist
);
2184 /* Add an alias or abbreviation command to the list of commands. */
2187 add_com_alias (name
, oldname
, class, abbrev_flag
)
2190 enum command_class
class;
2193 add_alias_cmd (name
, oldname
, class, abbrev_flag
, &cmdlist
);
2200 error ("Argument required (%s).", why
);
2205 help_command (command
, from_tty
)
2207 int from_tty
; /* Ignored */
2209 help_cmd (command
, gdb_stdout
);
2213 validate_comname (comname
)
2219 error_no_arg ("name of command to define");
2224 if (!isalnum(*p
) && *p
!= '-')
2225 error ("Junk in argument list: \"%s\"", p
);
2230 /* This is just a placeholder in the command data structures. */
2232 user_defined_command (ignore
, from_tty
)
2239 define_command (comname
, from_tty
)
2243 register struct command_line
*cmds
;
2244 register struct cmd_list_element
*c
, *newc
, *hookc
= 0;
2245 char *tem
= comname
;
2246 #define HOOK_STRING "hook-"
2249 validate_comname (comname
);
2251 /* Look it up, and verify that we got an exact match. */
2252 c
= lookup_cmd (&tem
, cmdlist
, "", -1, 1);
2253 if (c
&& !STREQ (comname
, c
->name
))
2258 if (c
->class == class_user
|| c
->class == class_alias
)
2259 tem
= "Redefine command \"%s\"? ";
2261 tem
= "Really redefine built-in command \"%s\"? ";
2262 if (!query (tem
, c
->name
))
2263 error ("Command \"%s\" not redefined.", c
->name
);
2266 /* If this new command is a hook, then mark the command which it
2267 is hooking. Note that we allow hooking `help' commands, so that
2268 we can hook the `stop' pseudo-command. */
2270 if (!strncmp (comname
, HOOK_STRING
, HOOK_LEN
))
2272 /* Look up cmd it hooks, and verify that we got an exact match. */
2273 tem
= comname
+HOOK_LEN
;
2274 hookc
= lookup_cmd (&tem
, cmdlist
, "", -1, 0);
2275 if (hookc
&& !STREQ (comname
+HOOK_LEN
, hookc
->name
))
2279 warning ("Your new `%s' command does not hook any existing command.",
2281 if (!query ("Proceed? ", (char *)0))
2282 error ("Not confirmed.");
2286 comname
= savestring (comname
, strlen (comname
));
2288 /* If the rest of the commands will be case insensitive, this one
2289 should behave in the same manner. */
2290 for (tem
= comname
; *tem
; tem
++)
2291 if (isupper(*tem
)) *tem
= tolower(*tem
);
2295 printf_unfiltered ("Type commands for definition of \"%s\".\n\
2296 End with a line saying just \"end\".\n", comname
);
2297 gdb_flush (gdb_stdout
);
2301 cmds
= read_command_lines ();
2303 if (c
&& c
->class == class_user
)
2304 free_command_lines (&c
->user_commands
);
2306 newc
= add_cmd (comname
, class_user
, user_defined_command
,
2307 (c
&& c
->class == class_user
)
2308 ? c
->doc
: savestring ("User-defined.", 13), &cmdlist
);
2309 newc
->user_commands
= cmds
;
2311 /* If this new command is a hook, then mark both commands as being
2315 hookc
->hook
= newc
; /* Target gets hooked. */
2316 newc
->hookee
= hookc
; /* We are marked as hooking target cmd. */
2321 document_command (comname
, from_tty
)
2325 struct command_line
*doclines
;
2326 register struct cmd_list_element
*c
;
2327 char *tem
= comname
;
2329 validate_comname (comname
);
2331 c
= lookup_cmd (&tem
, cmdlist
, "", 0, 1);
2333 if (c
->class != class_user
)
2334 error ("Command \"%s\" is built-in.", comname
);
2337 printf_unfiltered ("Type documentation for \"%s\".\n\
2338 End with a line saying just \"end\".\n", comname
);
2340 doclines
= read_command_lines ();
2342 if (c
->doc
) free (c
->doc
);
2345 register struct command_line
*cl1
;
2346 register int len
= 0;
2348 for (cl1
= doclines
; cl1
; cl1
= cl1
->next
)
2349 len
+= strlen (cl1
->line
) + 1;
2351 c
->doc
= (char *) xmalloc (len
+ 1);
2354 for (cl1
= doclines
; cl1
; cl1
= cl1
->next
)
2356 strcat (c
->doc
, cl1
->line
);
2358 strcat (c
->doc
, "\n");
2362 free_command_lines (&doclines
);
2366 print_gnu_advertisement ()
2368 printf_unfiltered ("\
2369 GDB is free software and you are welcome to distribute copies of it\n\
2370 under certain conditions; type \"show copying\" to see the conditions.\n\
2371 There is absolutely no warranty for GDB; type \"show warranty\" for details.\n\
2376 print_gdb_version (stream
)
2379 fprintf_filtered (stream
, "\
2380 GDB %s (%s", version
, host_name
);
2382 if (!STREQ (host_name
, target_name
))
2383 fprintf_filtered (stream
, " --target %s", target_name
);
2385 fprintf_filtered (stream
, "), ");
2387 fprintf_filtered (stream
, "Copyright 1994 Free Software Foundation, Inc.");
2392 show_version (args
, from_tty
)
2397 print_gnu_advertisement ();
2398 print_gdb_version (gdb_stdout
);
2399 printf_filtered ("\n");
2403 /* xgdb calls this to reprint the usual GDB prompt. Obsolete now that xgdb
2409 printf_unfiltered ("%s", prompt
);
2410 gdb_flush (gdb_stdout
);
2414 quit_command (args
, from_tty
)
2418 if (inferior_pid
!= 0 && target_has_execution
)
2422 if (query ("The program is running. Quit anyway (and detach it)? "))
2423 target_detach (args
, from_tty
);
2425 error ("Not confirmed.");
2429 if (query ("The program is running. Quit anyway (and kill it)? "))
2432 error ("Not confirmed.");
2435 /* UDI wants this, to kill the TIP. */
2438 /* Save the history information if it is appropriate to do so. */
2439 if (write_history_p
&& history_filename
)
2440 write_history (history_filename
);
2445 /* Returns whether GDB is running on a terminal and whether the user
2446 desires that questions be asked of them on that terminal. */
2449 input_from_terminal_p ()
2451 return gdb_has_a_terminal () && (instream
== stdin
) & caution
;
2456 pwd_command (args
, from_tty
)
2460 if (args
) error ("The \"pwd\" command does not take an argument: %s", args
);
2461 getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
));
2463 if (!STREQ (gdb_dirbuf
, current_directory
))
2464 printf_unfiltered ("Working directory %s\n (canonically %s).\n",
2465 current_directory
, gdb_dirbuf
);
2467 printf_unfiltered ("Working directory %s.\n", current_directory
);
2471 cd_command (dir
, from_tty
)
2476 /* Found something other than leading repetitions of "/..". */
2477 int found_real_path
;
2480 /* If the new directory is absolute, repeat is a no-op; if relative,
2481 repeat might be useful but is more likely to be a mistake. */
2485 error_no_arg ("new working directory");
2487 dir
= tilde_expand (dir
);
2488 make_cleanup (free
, dir
);
2490 if (chdir (dir
) < 0)
2491 perror_with_name (dir
);
2494 dir
= savestring (dir
, len
- (len
> 1 && dir
[len
-1] == '/'));
2496 current_directory
= dir
;
2499 if (current_directory
[0] == '/' && current_directory
[1] == '\0')
2500 current_directory
= concat (current_directory
, dir
, NULL
);
2502 current_directory
= concat (current_directory
, "/", dir
, NULL
);
2506 /* Now simplify any occurrences of `.' and `..' in the pathname. */
2508 found_real_path
= 0;
2509 for (p
= current_directory
; *p
;)
2511 if (p
[0] == '/' && p
[1] == '.' && (p
[2] == 0 || p
[2] == '/'))
2513 else if (p
[0] == '/' && p
[1] == '.' && p
[2] == '.'
2514 && (p
[3] == 0 || p
[3] == '/'))
2516 if (found_real_path
)
2518 /* Search backwards for the directory just before the "/.."
2519 and obliterate it and the "/..". */
2521 while (q
!= current_directory
&& q
[-1] != '/')
2524 if (q
== current_directory
)
2525 /* current_directory is
2526 a relative pathname ("can't happen"--leave it alone). */
2530 strcpy (q
- 1, p
+ 3);
2535 /* We are dealing with leading repetitions of "/..", for example
2536 "/../..", which is the Mach super-root. */
2541 found_real_path
= 1;
2546 forget_cached_source_info ();
2549 pwd_command ((char *) 0, 1);
2552 struct source_cleanup_lines_args
{
2555 char *old_pre_error
;
2556 char *old_error_pre_print
;
2560 source_cleanup_lines (args
)
2563 struct source_cleanup_lines_args
*p
=
2564 (struct source_cleanup_lines_args
*)args
;
2565 source_line_number
= p
->old_line
;
2566 source_file_name
= p
->old_file
;
2567 source_pre_error
= p
->old_pre_error
;
2568 error_pre_print
= p
->old_error_pre_print
;
2573 source_command (args
, from_tty
)
2578 struct cleanup
*old_cleanups
;
2580 struct source_cleanup_lines_args old_lines
;
2585 error ("source command requires pathname of file to source.");
2588 file
= tilde_expand (file
);
2589 old_cleanups
= make_cleanup (free
, file
);
2591 stream
= fopen (file
, FOPEN_RT
);
2593 perror_with_name (file
);
2595 make_cleanup (fclose
, stream
);
2597 old_lines
.old_line
= source_line_number
;
2598 old_lines
.old_file
= source_file_name
;
2599 old_lines
.old_pre_error
= source_pre_error
;
2600 old_lines
.old_error_pre_print
= error_pre_print
;
2601 make_cleanup (source_cleanup_lines
, &old_lines
);
2602 source_line_number
= 0;
2603 source_file_name
= file
;
2604 source_pre_error
= error_pre_print
== NULL
? "" : error_pre_print
;
2605 source_pre_error
= savestring (source_pre_error
, strlen (source_pre_error
));
2606 make_cleanup (free
, source_pre_error
);
2607 /* This will get set every time we read a line. So it won't stay "" for
2609 error_pre_print
= "";
2611 needed_length
= strlen (source_file_name
) + strlen (source_pre_error
) + 80;
2612 if (source_error_allocated
< needed_length
)
2614 source_error_allocated
*= 2;
2615 if (source_error_allocated
< needed_length
)
2616 source_error_allocated
= needed_length
;
2617 if (source_error
== NULL
)
2618 source_error
= xmalloc (source_error_allocated
);
2620 source_error
= xrealloc (source_error
, source_error_allocated
);
2623 read_command_file (stream
);
2625 do_cleanups (old_cleanups
);
2630 echo_command (text
, from_tty
)
2638 while ((c
= *p
++) != '\0')
2642 /* \ at end of argument is used after spaces
2643 so they won't be lost. */
2647 c
= parse_escape (&p
);
2649 printf_filtered ("%c", c
);
2652 printf_filtered ("%c", c
);
2655 /* Force this output to appear now. */
2657 gdb_flush (gdb_stdout
);
2661 #ifdef TARGET_BYTE_ORDER_SELECTABLE
2663 /* Functions to manipulate the endianness of the target. */
2665 #ifndef TARGET_BYTE_ORDER_DEFAULT
2666 #define TARGET_BYTE_ORDER_DEFAULT BIG_ENDIAN
2669 int target_byte_order
= TARGET_BYTE_ORDER_DEFAULT
;
2671 static int target_byte_order_auto
= 1;
2673 /* Called if the user enters ``set endian'' without an argument. */
2675 set_endian (args
, from_tty
)
2679 printf_unfiltered ("\"set endian\" must be followed by \"auto\", \"big\" or \"little\".\n");
2680 show_endian (args
, from_tty
);
2683 /* Called by ``set endian big''. */
2685 set_endian_big (args
, from_tty
)
2689 target_byte_order
= BIG_ENDIAN
;
2690 target_byte_order_auto
= 0;
2693 /* Called by ``set endian little''. */
2695 set_endian_little (args
, from_tty
)
2699 target_byte_order
= LITTLE_ENDIAN
;
2700 target_byte_order_auto
= 0;
2703 /* Called by ``set endian auto''. */
2705 set_endian_auto (args
, from_tty
)
2709 target_byte_order_auto
= 1;
2712 /* Called by ``show endian''. */
2714 show_endian (args
, from_tty
)
2719 (target_byte_order_auto
2720 ? "The target endianness is set automatically (currently %s endian)\n"
2721 : "The target is assumed to be %s endian\n");
2722 printf_unfiltered (msg
, TARGET_BYTE_ORDER
== BIG_ENDIAN
? "big" : "little");
2725 #endif /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
2727 /* Set the endianness from a BFD. */
2729 set_endian_from_file (abfd
)
2732 #ifdef TARGET_BYTE_ORDER_SELECTABLE
2735 if (abfd
->xvec
->byteorder_big_p
)
2738 want
= LITTLE_ENDIAN
;
2739 if (target_byte_order_auto
)
2740 target_byte_order
= want
;
2741 else if (target_byte_order
!= want
)
2742 warning ("%s endian file does not match %s endian target.",
2743 want
== BIG_ENDIAN
? "big" : "little",
2744 TARGET_BYTE_ORDER
== BIG_ENDIAN
? "big" : "little");
2746 #else /* ! defined (TARGET_BYTE_ORDER_SELECTABLE) */
2748 if (abfd
->xvec
->byteorder_big_p
2749 ? TARGET_BYTE_ORDER
!= BIG_ENDIAN
2750 : TARGET_BYTE_ORDER
== BIG_ENDIAN
)
2751 warning ("%s endian file does not match %s endian target.",
2752 abfd
->xvec
->byteorder_big_p
? "big" : "little",
2753 TARGET_BYTE_ORDER
== BIG_ENDIAN
? "big" : "little");
2755 #endif /* ! defined (TARGET_BYTE_ORDER_SELECTABLE) */
2758 /* Functions to manipulate command line editing control variables. */
2760 /* Number of commands to print in each call to show_commands. */
2761 #define Hist_print 10
2763 show_commands (args
, from_tty
)
2767 /* Index for history commands. Relative to history_base. */
2770 /* Number of the history entry which we are planning to display next.
2771 Relative to history_base. */
2774 /* The first command in the history which doesn't exist (i.e. one more
2775 than the number of the last command). Relative to history_base. */
2778 extern HIST_ENTRY
*history_get
PARAMS ((int));
2780 /* Print out some of the commands from the command history. */
2781 /* First determine the length of the history list. */
2782 hist_len
= history_size
;
2783 for (offset
= 0; offset
< history_size
; offset
++)
2785 if (!history_get (history_base
+ offset
))
2794 if (args
[0] == '+' && args
[1] == '\0')
2795 /* "info editing +" should print from the stored position. */
2798 /* "info editing <exp>" should print around command number <exp>. */
2799 num
= (parse_and_eval_address (args
) - history_base
) - Hist_print
/ 2;
2801 /* "show commands" means print the last Hist_print commands. */
2804 num
= hist_len
- Hist_print
;
2810 /* If there are at least Hist_print commands, we want to display the last
2811 Hist_print rather than, say, the last 6. */
2812 if (hist_len
- num
< Hist_print
)
2814 num
= hist_len
- Hist_print
;
2819 for (offset
= num
; offset
< num
+ Hist_print
&& offset
< hist_len
; offset
++)
2821 printf_filtered ("%5d %s\n", history_base
+ offset
,
2822 (history_get (history_base
+ offset
))->line
);
2825 /* The next command we want to display is the next one that we haven't
2829 /* If the user repeats this command with return, it should do what
2830 "show commands +" does. This is unnecessary if arg is null,
2831 because "show commands +" is not useful after "show commands". */
2832 if (from_tty
&& args
)
2839 /* Called by do_setshow_command. */
2842 set_history_size_command (args
, from_tty
, c
)
2845 struct cmd_list_element
*c
;
2847 if (history_size
== INT_MAX
)
2848 unstifle_history ();
2849 else if (history_size
>= 0)
2850 stifle_history (history_size
);
2853 history_size
= INT_MAX
;
2854 error ("History size must be non-negative");
2860 set_history (args
, from_tty
)
2864 printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n");
2865 help_list (sethistlist
, "set history ", -1, gdb_stdout
);
2870 show_history (args
, from_tty
)
2874 cmd_show_list (showhistlist
, from_tty
, "");
2877 int info_verbose
= 0; /* Default verbose msgs off */
2879 /* Called by do_setshow_command. An elaborate joke. */
2882 set_verbose (args
, from_tty
, c
)
2885 struct cmd_list_element
*c
;
2887 char *cmdname
= "verbose";
2888 struct cmd_list_element
*showcmd
;
2890 showcmd
= lookup_cmd_1 (&cmdname
, showlist
, NULL
, 1);
2894 c
->doc
= "Set verbose printing of informational messages.";
2895 showcmd
->doc
= "Show verbose printing of informational messages.";
2899 c
->doc
= "Set verbosity.";
2900 showcmd
->doc
= "Show verbosity.";
2905 float_handler (signo
)
2908 /* This message is based on ANSI C, section 4.7. Note that integer
2909 divide by zero causes this, so "float" is a misnomer. */
2910 signal (SIGFPE
, float_handler
);
2911 error ("Erroneous arithmetic operation.");
2923 enablebreaklist
= NULL
;
2927 #ifdef TARGET_BYTE_ORDER_SELECTABLE
2931 showhistlist
= NULL
;
2932 unsethistlist
= NULL
;
2933 #if MAINTENANCE_CMDS
2934 maintenancelist
= NULL
;
2935 maintenanceinfolist
= NULL
;
2936 maintenanceprintlist
= NULL
;
2938 setprintlist
= NULL
;
2939 showprintlist
= NULL
;
2940 setchecklist
= NULL
;
2941 showchecklist
= NULL
;
2944 /* Init the history buffer. Note that we are called after the init file(s)
2945 * have been read so that the user can change the history file via his
2946 * .gdbinit file (for instance). The GDBHISTFILE environment variable
2947 * overrides all of this.
2955 tmpenv
= getenv ("HISTSIZE");
2957 history_size
= atoi (tmpenv
);
2958 else if (!history_size
)
2961 stifle_history (history_size
);
2963 tmpenv
= getenv ("GDBHISTFILE");
2965 history_filename
= savestring (tmpenv
, strlen(tmpenv
));
2966 else if (!history_filename
) {
2967 /* We include the current directory so that if the user changes
2968 directories the file written will be the same as the one
2970 history_filename
= concat (current_directory
, "/.gdb_history", NULL
);
2972 read_history (history_filename
);
2978 struct cmd_list_element
*c
;
2980 #ifdef TARGET_BYTE_ORDER_SELECTABLE
2982 add_prefix_cmd ("endian", class_support
, set_endian
,
2983 "Set endianness of target.",
2984 &endianlist
, "set endian ", 0, &setlist
);
2985 add_cmd ("big", class_support
, set_endian_big
,
2986 "Set target as being big endian.", &endianlist
);
2987 add_cmd ("little", class_support
, set_endian_little
,
2988 "Set target as being little endian.", &endianlist
);
2989 add_cmd ("auto", class_support
, set_endian_auto
,
2990 "Select target endianness automatically.", &endianlist
);
2991 add_cmd ("endian", class_support
, show_endian
,
2992 "Show endianness of target.", &showlist
);
2994 #endif /* defined (TARGET_BYTE_ORDER_SELECTABLE) */
2996 #ifdef DEFAULT_PROMPT
2997 prompt
= savestring (DEFAULT_PROMPT
, strlen(DEFAULT_PROMPT
));
2999 prompt
= savestring ("(gdb) ", 6);
3002 /* Set the important stuff up for command editing. */
3003 command_editing_p
= 1;
3004 history_expansion_p
= 0;
3005 write_history_p
= 0;
3007 /* Setup important stuff for command line editing. */
3008 rl_completion_entry_function
= (int (*)()) symbol_completion_function
;
3009 rl_completer_word_break_characters
= gdb_completer_word_break_characters
;
3010 rl_completer_quote_characters
= gdb_completer_quote_characters
;
3011 rl_readline_name
= "gdb";
3013 /* Define the classes of commands.
3014 They will appear in the help list in the reverse of this order. */
3016 add_cmd ("internals", class_maintenance
, NO_FUNCTION
,
3017 "Maintenance commands.\n\
3018 Some gdb commands are provided just for use by gdb maintainers.\n\
3019 These commands are subject to frequent change, and may not be as\n\
3020 well documented as user commands.",
3022 add_cmd ("obscure", class_obscure
, NO_FUNCTION
, "Obscure features.", &cmdlist
);
3023 add_cmd ("aliases", class_alias
, NO_FUNCTION
, "Aliases of other commands.", &cmdlist
);
3024 add_cmd ("user-defined", class_user
, NO_FUNCTION
, "User-defined commands.\n\
3025 The commands in this class are those defined by the user.\n\
3026 Use the \"define\" command to define a command.", &cmdlist
);
3027 add_cmd ("support", class_support
, NO_FUNCTION
, "Support facilities.", &cmdlist
);
3028 add_cmd ("status", class_info
, NO_FUNCTION
, "Status inquiries.", &cmdlist
);
3029 add_cmd ("files", class_files
, NO_FUNCTION
, "Specifying and examining files.", &cmdlist
);
3030 add_cmd ("breakpoints", class_breakpoint
, NO_FUNCTION
, "Making program stop at certain points.", &cmdlist
);
3031 add_cmd ("data", class_vars
, NO_FUNCTION
, "Examining data.", &cmdlist
);
3032 add_cmd ("stack", class_stack
, NO_FUNCTION
, "Examining the stack.\n\
3033 The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\
3034 counting from zero for the innermost (currently executing) frame.\n\n\
3035 At any time gdb identifies one frame as the \"selected\" frame.\n\
3036 Variable lookups are done with respect to the selected frame.\n\
3037 When the program being debugged stops, gdb selects the innermost frame.\n\
3038 The commands below can be used to select other frames by number or address.",
3040 add_cmd ("running", class_run
, NO_FUNCTION
, "Running the program.", &cmdlist
);
3042 add_com ("pwd", class_files
, pwd_command
,
3043 "Print working directory. This is used for your program as well.");
3044 c
= add_cmd ("cd", class_files
, cd_command
,
3045 "Set working directory to DIR for debugger and program being debugged.\n\
3046 The change does not take effect for the program being debugged\n\
3047 until the next time it is started.", &cmdlist
);
3048 c
->completer
= filename_completer
;
3051 (add_set_cmd ("prompt", class_support
, var_string
, (char *)&prompt
,
3056 add_com ("echo", class_support
, echo_command
,
3057 "Print a constant string. Give string as argument.\n\
3058 C escape sequences may be used in the argument.\n\
3059 No newline is added at the end of the argument;\n\
3060 use \"\\n\" if you want a newline to be printed.\n\
3061 Since leading and trailing whitespace are ignored in command arguments,\n\
3062 if you want to print some you must use \"\\\" before leading whitespace\n\
3063 to be printed or after trailing whitespace.");
3064 add_com ("document", class_support
, document_command
,
3065 "Document a user-defined command.\n\
3066 Give command name as argument. Give documentation on following lines.\n\
3067 End with a line of just \"end\".");
3068 add_com ("define", class_support
, define_command
,
3069 "Define a new command name. Command name is argument.\n\
3070 Definition appears on following lines, one command per line.\n\
3071 End with a line of just \"end\".\n\
3072 Use the \"document\" command to give documentation for the new command.\n\
3073 Commands defined in this way do not take arguments.");
3076 c
= add_cmd ("source", class_support
, source_command
,
3077 "Read commands from a file named FILE.\n\
3078 Note that the file \"" GDBINIT_FILENAME
"\" is read automatically in this way\n\
3079 when gdb is started.", &cmdlist
);
3081 /* Punt file name, we can't help it easily. */
3082 c
= add_cmd ("source", class_support
, source_command
,
3083 "Read commands from a file named FILE.\n\
3084 Note that the file \".gdbinit\" is read automatically in this way\n\
3085 when gdb is started.", &cmdlist
);
3087 c
->completer
= filename_completer
;
3089 add_com ("quit", class_support
, quit_command
, "Exit gdb.");
3090 add_com ("help", class_support
, help_command
, "Print list of commands.");
3091 add_com_alias ("q", "quit", class_support
, 1);
3092 add_com_alias ("h", "help", class_support
, 1);
3095 c
= add_set_cmd ("verbose", class_support
, var_boolean
, (char *)&info_verbose
,
3098 add_show_from_set (c
, &showlist
);
3099 c
->function
.sfunc
= set_verbose
;
3100 set_verbose (NULL
, 0, c
);
3103 (add_set_cmd ("editing", class_support
, var_boolean
, (char *)&command_editing_p
,
3104 "Set editing of command lines as they are typed.\n\
3105 Use \"on\" to enable to enable the editing, and \"off\" to disable it.\n\
3106 Without an argument, command line editing is enabled. To edit, use\n\
3107 EMACS-like or VI-like commands like control-P or ESC.", &setlist
),
3110 add_prefix_cmd ("history", class_support
, set_history
,
3111 "Generic command for setting command history parameters.",
3112 &sethistlist
, "set history ", 0, &setlist
);
3113 add_prefix_cmd ("history", class_support
, show_history
,
3114 "Generic command for showing command history parameters.",
3115 &showhistlist
, "show history ", 0, &showlist
);
3118 (add_set_cmd ("expansion", no_class
, var_boolean
, (char *)&history_expansion_p
,
3119 "Set history expansion on command input.\n\
3120 Without an argument, history expansion is enabled.", &sethistlist
),
3124 (add_set_cmd ("save", no_class
, var_boolean
, (char *)&write_history_p
,
3125 "Set saving of the history record on exit.\n\
3126 Use \"on\" to enable to enable the saving, and \"off\" to disable it.\n\
3127 Without an argument, saving is enabled.", &sethistlist
),
3130 c
= add_set_cmd ("size", no_class
, var_integer
, (char *)&history_size
,
3131 "Set the size of the command history, \n\
3132 ie. the number of previous commands to keep a record of.", &sethistlist
);
3133 add_show_from_set (c
, &showhistlist
);
3134 c
->function
.sfunc
= set_history_size_command
;
3137 (add_set_cmd ("filename", no_class
, var_filename
, (char *)&history_filename
,
3138 "Set the filename in which to record the command history\n\
3139 (the list of previous commands of which a record is kept).", &sethistlist
),
3143 (add_set_cmd ("confirm", class_support
, var_boolean
,
3145 "Set whether to confirm potentially dangerous operations.",
3149 add_prefix_cmd ("info", class_info
, info_command
,
3150 "Generic command for showing things about the program being debugged.",
3151 &infolist
, "info ", 0, &cmdlist
);
3152 add_com_alias ("i", "info", class_info
, 1);
3154 add_com ("complete", class_obscure
, complete_command
,
3155 "List the completions for the rest of the line as a command.");
3157 add_prefix_cmd ("show", class_info
, show_command
,
3158 "Generic command for showing things about the debugger.",
3159 &showlist
, "show ", 0, &cmdlist
);
3160 /* Another way to get at the same thing. */
3161 add_info ("set", show_command
, "Show all GDB settings.");
3163 add_cmd ("commands", no_class
, show_commands
,
3164 "Show the the history of commands you typed.\n\
3165 You can supply a command number to start with, or a `+' to start after\n\
3166 the previous command number shown.",
3169 add_cmd ("version", no_class
, show_version
,
3170 "Show what version of GDB this is.", &showlist
);
3172 add_com ("while", class_support
, while_command
,
3173 "Execute nested commands WHILE the conditional expression is non zero.\n\
3174 The conditional expression must follow the word `while' and must in turn be\
3175 followed by a new line. The nested commands must be entered one per line,\
3176 and should be terminated by the word `end'.");
3178 add_com ("if", class_support
, if_command
,
3179 "Execute nested commands once IF the conditional expression is non zero.\n\
3180 The conditional expression must follow the word `if' and must in turn be\
3181 followed by a new line. The nested commands must be entered one per line,\
3182 and should be terminated by the word 'else' or `end'. If an else clause\
3183 is used, the same rules apply to its nested commands as to the first ones.");
3185 /* If target is open when baud changes, it doesn't take effect until the
3186 next open (I think, not sure). */
3187 add_show_from_set (add_set_cmd ("remotebaud", no_class
,
3188 var_zinteger
, (char *)&baud_rate
,
3189 "Set baud rate for remote serial I/O.\n\
3190 This value is used to set the speed of the serial port when debugging\n\
3191 using remote targets.", &setlist
),
3195 add_set_cmd ("remotedebug", no_class
, var_zinteger
, (char *)&remote_debug
,
3196 "Set debugging of remote protocol.\n\
3197 When enabled, each packet sent or received with the remote target\n\
3198 is displayed.", &setlist
),