1 /* Top level stuff for GDB, the GNU debugger.
2 Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 1999
3 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
24 #include "call-cmds.h"
29 #include "breakpoint.h"
31 #include "expression.h"
34 #include "terminal.h" /* For job_control. */
39 /* readline include files */
40 #include <readline/readline.h>
41 #include <readline/history.h>
43 /* readline defines this. */
46 #include <sys/types.h>
48 #include "event-loop.h"
49 #include "event-top.h"
50 #include "gdb_string.h"
54 /* Prototypes for local functions */
56 static void dont_repeat_command PARAMS ((char *, int));
58 static void source_cleanup_lines PARAMS ((PTR));
60 static void user_defined_command PARAMS ((char *, int));
62 static void init_signals PARAMS ((void));
65 static void stop_sig PARAMS ((int));
68 static char *line_completion_function PARAMS ((char *, int, char *, int));
70 static char *readline_line_completion_function PARAMS ((char *, int));
72 /* NOTE 1999-04-29: this function will be static again, after we make the
73 event loop be the default command loop for gdb, and we merge
74 event-top.c into this file, top.c */
75 /* static */ void command_loop_marker PARAMS ((int));
77 static void while_command PARAMS ((char *, int));
79 static void if_command PARAMS ((char *, int));
81 static struct command_line *
82 build_command_line PARAMS ((enum command_control_type, char *));
84 static struct command_line *
85 get_command_line PARAMS ((enum command_control_type, char *));
87 static void realloc_body_list PARAMS ((struct command_line *, int));
89 static enum misc_command_type read_next_line PARAMS ((struct command_line **));
91 static enum command_control_type
92 recurse_read_control_structure PARAMS ((struct command_line *));
94 static struct cleanup *setup_user_args PARAMS ((char *));
96 static char *locate_arg PARAMS ((char *));
98 static char *insert_args PARAMS ((char *));
100 static void arg_cleanup PARAMS ((void));
102 static void init_main PARAMS ((void));
104 static void init_cmd_lists PARAMS ((void));
106 static void float_handler PARAMS ((int));
108 static void init_signals PARAMS ((void));
110 static void set_verbose PARAMS ((char *, int, struct cmd_list_element *));
112 static void show_history PARAMS ((char *, int));
114 static void set_history PARAMS ((char *, int));
116 static void set_history_size_command PARAMS ((char *, int,
117 struct cmd_list_element *));
119 static void show_commands PARAMS ((char *, int));
121 static void echo_command PARAMS ((char *, int));
123 static void pwd_command PARAMS ((char *, int));
125 static void show_version PARAMS ((char *, int));
127 static void document_command PARAMS ((char *, int));
129 static void define_command PARAMS ((char *, int));
131 static void validate_comname PARAMS ((char *));
133 static void help_command PARAMS ((char *, int));
135 static void show_command PARAMS ((char *, int));
137 static void info_command PARAMS ((char *, int));
139 static void complete_command PARAMS ((char *, int));
141 static void do_nothing PARAMS ((int));
144 /* NOTE 1999-04-29: This function will be static again, once we modify
145 gdb to use the event loop as the default command loop and we merge
146 event-top.c into this file, top.c */
147 /* static */ int quit_cover PARAMS ((PTR));
149 static void disconnect PARAMS ((int));
152 static void source_cleanup PARAMS ((FILE *));
154 /* Default command line prompt. This is overriden in some configs. */
156 #ifndef DEFAULT_PROMPT
157 #define DEFAULT_PROMPT "(gdb) "
160 /* Initialization file name for gdb. This is overridden in some configs. */
162 #ifndef GDBINIT_FILENAME
163 #define GDBINIT_FILENAME ".gdbinit"
165 char gdbinit[] = GDBINIT_FILENAME;
167 int inhibit_gdbinit = 0;
169 /* If nonzero, and GDB has been configured to be able to use windows,
170 attempt to open them upon startup. */
174 extern char lang_frame_mismatch_warn[]; /* language.c */
176 /* Flag for whether we want all the "from_tty" gubbish printed. */
178 int caution = 1; /* Default is yes, sigh. */
180 /* Define all cmd_list_elements. */
182 /* Chain containing all defined commands. */
184 struct cmd_list_element *cmdlist;
186 /* Chain containing all defined info subcommands. */
188 struct cmd_list_element *infolist;
190 /* Chain containing all defined enable subcommands. */
192 struct cmd_list_element *enablelist;
194 /* Chain containing all defined disable subcommands. */
196 struct cmd_list_element *disablelist;
198 /* Chain containing all defined toggle subcommands. */
200 struct cmd_list_element *togglelist;
202 /* Chain containing all defined stop subcommands. */
204 struct cmd_list_element *stoplist;
206 /* Chain containing all defined delete subcommands. */
208 struct cmd_list_element *deletelist;
210 /* Chain containing all defined "enable breakpoint" subcommands. */
212 struct cmd_list_element *enablebreaklist;
214 /* Chain containing all defined set subcommands */
216 struct cmd_list_element *setlist;
218 /* Chain containing all defined unset subcommands */
220 struct cmd_list_element *unsetlist;
222 /* Chain containing all defined show subcommands. */
224 struct cmd_list_element *showlist;
226 /* Chain containing all defined \"set history\". */
228 struct cmd_list_element *sethistlist;
230 /* Chain containing all defined \"show history\". */
232 struct cmd_list_element *showhistlist;
234 /* Chain containing all defined \"unset history\". */
236 struct cmd_list_element *unsethistlist;
238 /* Chain containing all defined maintenance subcommands. */
240 struct cmd_list_element *maintenancelist;
242 /* Chain containing all defined "maintenance info" subcommands. */
244 struct cmd_list_element *maintenanceinfolist;
246 /* Chain containing all defined "maintenance print" subcommands. */
248 struct cmd_list_element *maintenanceprintlist;
250 struct cmd_list_element *setprintlist;
252 struct cmd_list_element *showprintlist;
254 struct cmd_list_element *setchecklist;
256 struct cmd_list_element *showchecklist;
258 /* stdio stream that command input is being read from. Set to stdin normally.
259 Set by source_command to the file we are sourcing. Set to NULL if we are
260 executing a user-defined command or interacting via a GUI. */
264 /* Current working directory. */
266 char *current_directory;
268 /* The directory name is actually stored here (usually). */
269 char gdb_dirbuf[1024];
271 /* Function to call before reading a command, if nonzero.
272 The function receives two args: an input stream,
273 and a prompt string. */
275 void (*window_hook) PARAMS ((FILE *, char *));
280 /* gdb prints this when reading a command interactively */
281 static char *gdb_prompt_string; /* the global prompt string */
282 extern char *get_prompt PARAMS ((void)); /* access function for prompt string */
284 /* Buffer used for reading command lines, and the size
285 allocated for it so far. */
290 /* Nonzero if the current command is modified by "server ". This
291 affects things like recording into the command history, comamnds
292 repeating on RETURN, etc. This is so a user interface (emacs, GUI,
293 whatever) can issue its own commands and also send along commands
294 from the user, and have the user not notice that the user interface
295 is issuing commands too. */
298 /* Baud rate specified for talking to serial target systems. Default
299 is left as -1, so targets can choose their own defaults. */
300 /* FIXME: This means that "show remotebaud" and gr_files_info can print -1
301 or (unsigned int)-1. This is a Bad User Interface. */
305 /* Timeout limit for response from target. */
307 int remote_timeout = 20; /* Set default to 20 */
309 /* Non-zero tells remote* modules to output debugging info. */
311 int remote_debug = 0;
313 /* Non-zero means the target is running. Note: this is different from
314 saying that there is an active target and we are stopped at a
315 breakpoint, for instance. This is a real indicator whether the
316 target is off and running, which gdb is doing something else. */
317 int target_executing = 0;
319 /* Level of control structure. */
320 static int control_level;
322 /* Structure for arguments to user defined functions. */
323 #define MAXUSERARGS 10
326 struct user_args *next;
337 /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */
341 #define STOP_SIGNAL SIGTSTP
342 static void stop_sig PARAMS ((int));
346 /* Some System V have job control but not sigsetmask(). */
347 #if !defined (HAVE_SIGSETMASK)
349 #define HAVE_SIGSETMASK 1
351 #define HAVE_SIGSETMASK 0
355 #if 0 == (HAVE_SIGSETMASK)
356 #define sigsetmask(n)
359 /* Hooks for alternate command interfaces. */
361 /* Called after most modules have been initialized, but before taking users
364 void (*init_ui_hook) PARAMS ((char *argv0));
366 /* This hook is called from within gdb's many mini-event loops which could
367 steal control from a real user interface's event loop. It returns
368 non-zero if the user is requesting a detach, zero otherwise. */
370 int (*ui_loop_hook) PARAMS ((int));
372 /* Called instead of command_loop at top level. Can be invoked via
373 return_to_top_level. */
375 void (*command_loop_hook) PARAMS ((void));
378 /* Called instead of fputs for all output. */
380 void (*fputs_unfiltered_hook) PARAMS ((const char *linebuffer, GDB_FILE * stream));
382 /* Called from print_frame_info to list the line we stopped in. */
384 void (*print_frame_info_listing_hook) PARAMS ((struct symtab * s, int line,
385 int stopline, int noerror));
386 /* Replaces most of query. */
388 int (*query_hook) PARAMS ((const char *, va_list));
390 /* Replaces most of warning. */
392 void (*warning_hook) PARAMS ((const char *, va_list));
394 /* Called from gdb_flush to flush output. */
396 void (*flush_hook) PARAMS ((GDB_FILE * stream));
398 /* These three functions support getting lines of text from the user. They
399 are used in sequence. First readline_begin_hook is called with a text
400 string that might be (for example) a message for the user to type in a
401 sequence of commands to be executed at a breakpoint. If this function
402 calls back to a GUI, it might take this opportunity to pop up a text
403 interaction window with this message. Next, readline_hook is called
404 with a prompt that is emitted prior to collecting the user input.
405 It can be called multiple times. Finally, readline_end_hook is called
406 to notify the GUI that we are done with the interaction window and it
409 void (*readline_begin_hook) PARAMS ((char *,...));
410 char *(*readline_hook) PARAMS ((char *));
411 void (*readline_end_hook) PARAMS ((void));
413 /* Called as appropriate to notify the interface of the specified breakpoint
416 void (*create_breakpoint_hook) PARAMS ((struct breakpoint * bpt));
417 void (*delete_breakpoint_hook) PARAMS ((struct breakpoint * bpt));
418 void (*modify_breakpoint_hook) PARAMS ((struct breakpoint * bpt));
420 /* Called during long calculations to allow GUI to repair window damage, and to
421 check for stop buttons, etc... */
423 void (*interactive_hook) PARAMS ((void));
425 /* Called when the registers have changed, as a hint to a GUI
426 to minimize window update. */
428 void (*registers_changed_hook) PARAMS ((void));
430 /* Tell the GUI someone changed the register REGNO. -1 means
431 that the caller does not know which register changed or
432 that several registers have changed (see value_assign). */
433 void (*register_changed_hook) PARAMS ((int regno));
435 /* Tell the GUI someone changed LEN bytes of memory at ADDR */
436 void (*memory_changed_hook) PARAMS ((CORE_ADDR addr, int len));
438 /* Called when going to wait for the target. Usually allows the GUI to run
439 while waiting for target events. */
441 int (*target_wait_hook) PARAMS ((int pid, struct target_waitstatus * status));
443 /* Used by UI as a wrapper around command execution. May do various things
444 like enabling/disabling buttons, etc... */
446 void (*call_command_hook) PARAMS ((struct cmd_list_element * c, char *cmd,
449 /* Called after a `set' command has finished. Is only run if the
450 `set' command succeeded. */
452 void (*set_hook) PARAMS ((struct cmd_list_element *c));
454 /* Called when the current thread changes. Argument is thread id. */
456 void (*context_hook) PARAMS ((int id));
458 /* Takes control from error (). Typically used to prevent longjmps out of the
459 middle of the GUI. Usually used in conjunction with a catch routine. */
461 NORETURN void (*error_hook)
462 PARAMS ((void)) ATTR_NORETURN;
465 /* Where to go for return_to_top_level (RETURN_ERROR). */
466 SIGJMP_BUF error_return;
467 /* Where to go for return_to_top_level (RETURN_QUIT). */
468 SIGJMP_BUF quit_return;
470 /* Return for reason REASON. This generally gets back to the command
471 loop, but can be caught via catch_errors. */
474 return_to_top_level (reason)
475 enum return_reason reason;
480 /* Perhaps it would be cleaner to do this via the cleanup chain (not sure
481 I can think of a reason why that is vital, though). */
482 bpstat_clear_actions (stop_bpstat); /* Clear queued breakpoint commands */
484 disable_current_display ();
485 do_cleanups (ALL_CLEANUPS);
486 if (async_p && target_has_async)
487 do_exec_cleanups (ALL_CLEANUPS);
489 if (annotation_level > 1)
500 (NORETURN void) SIGLONGJMP
501 (reason == RETURN_ERROR ? error_return : quit_return, 1);
504 /* Call FUNC with arg ARGS, catching any errors. If there is no
505 error, return the value returned by FUNC. If there is an error,
506 print ERRSTRING, print the specific error message, then return
509 Must not be called with immediate_quit in effect (bad things might
510 happen, say we got a signal in the middle of a memcpy to quit_return).
511 This is an OK restriction; with very few exceptions immediate_quit can
512 be replaced by judicious use of QUIT.
514 MASK specifies what to catch; it is normally set to
515 RETURN_MASK_ALL, if for no other reason than that the code which
516 calls catch_errors might not be set up to deal with a quit which
517 isn't caught. But if the code can deal with it, it generally
518 should be RETURN_MASK_ERROR, unless for some reason it is more
519 useful to abort only the portion of the operation inside the
520 catch_errors. Note that quit should return to the command line
521 fairly quickly, even if some further processing is being done. */
524 catch_errors (func, args, errstring, mask)
525 catch_errors_ftype *func;
530 SIGJMP_BUF saved_error;
531 SIGJMP_BUF saved_quit;
534 struct cleanup *saved_cleanup_chain;
535 char *saved_error_pre_print;
536 char *saved_quit_pre_print;
538 saved_cleanup_chain = save_cleanups ();
539 saved_error_pre_print = error_pre_print;
540 saved_quit_pre_print = quit_pre_print;
542 if (mask & RETURN_MASK_ERROR)
544 memcpy ((char *) saved_error, (char *) error_return, sizeof (SIGJMP_BUF));
545 error_pre_print = errstring;
547 if (mask & RETURN_MASK_QUIT)
549 memcpy (saved_quit, quit_return, sizeof (SIGJMP_BUF));
550 quit_pre_print = errstring;
553 if (SIGSETJMP (tmp_jmp) == 0)
555 if (mask & RETURN_MASK_ERROR)
556 memcpy (error_return, tmp_jmp, sizeof (SIGJMP_BUF));
557 if (mask & RETURN_MASK_QUIT)
558 memcpy (quit_return, tmp_jmp, sizeof (SIGJMP_BUF));
559 val = (*func) (args);
564 restore_cleanups (saved_cleanup_chain);
566 if (mask & RETURN_MASK_ERROR)
568 memcpy (error_return, saved_error, sizeof (SIGJMP_BUF));
569 error_pre_print = saved_error_pre_print;
571 if (mask & RETURN_MASK_QUIT)
573 memcpy (quit_return, saved_quit, sizeof (SIGJMP_BUF));
574 quit_pre_print = saved_quit_pre_print;
579 /* Handler for SIGHUP. */
586 catch_errors (quit_cover, NULL,
587 "Could not kill the program being debugged", RETURN_MASK_ALL);
588 signal (SIGHUP, SIG_DFL);
589 kill (getpid (), SIGHUP);
592 /* Just a little helper function for disconnect(). */
594 /* NOTE 1999-04-29: This function will be static again, once we modify
595 gdb to use the event loop as the default command loop and we merge
596 event-top.c into this file, top.c */
601 caution = 0; /* Throw caution to the wind -- we're exiting.
602 This prevents asking the user dumb questions. */
603 quit_command ((char *) 0, 0);
606 #endif /* defined SIGHUP */
608 /* Line number we are currently in in a file which is being sourced. */
609 /* NOTE 1999-04-29: This variable will be static again, once we modify
610 gdb to use the event loop as the default command loop and we merge
611 event-top.c into this file, top.c */
612 /* static */ int source_line_number;
614 /* Name of the file we are sourcing. */
615 /* NOTE 1999-04-29: This variable will be static again, once we modify
616 gdb to use the event loop as the default command loop and we merge
617 event-top.c into this file, top.c */
618 /* static */ char *source_file_name;
620 /* Buffer containing the error_pre_print used by the source stuff.
622 /* NOTE 1999-04-29: This variable will be static again, once we modify
623 gdb to use the event loop as the default command loop and we merge
624 event-top.c into this file, top.c */
625 /* static */ char *source_error;
626 static int source_error_allocated;
628 /* Something to glom on to the start of error_pre_print if source_file_name
630 /* NOTE 1999-04-29: This variable will be static again, once we modify
631 gdb to use the event loop as the default command loop and we merge
632 event-top.c into this file, top.c */
633 /* static */ char *source_pre_error;
635 /* Clean up on error during a "source" command (or execution of a
636 user-defined command). */
639 source_cleanup (stream)
642 /* Restore the previous input stream. */
646 /* Read commands from STREAM. */
648 read_command_file (stream)
651 struct cleanup *cleanups;
653 cleanups = make_cleanup ((make_cleanup_func) source_cleanup, instream);
656 do_cleanups (cleanups);
659 extern void init_proc PARAMS ((void));
661 void (*pre_init_ui_hook) PARAMS ((void));
667 if (pre_init_ui_hook)
670 /* Run the init function of each source file */
672 getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
673 current_directory = gdb_dirbuf;
676 /* Make sure we return to the original directory upon exit, come
677 what may, since the OS doesn't do that for us. */
678 make_final_cleanup ((make_cleanup_func) chdir, strsave (current_directory));
681 init_cmd_lists (); /* This needs to be done first */
682 initialize_targets (); /* Setup target_terminal macros for utils.c */
683 initialize_utils (); /* Make errors and warnings possible */
684 initialize_all_files ();
685 init_main (); /* But that omits this file! Do it now */
687 /* The signal handling mechanism is different depending whether or
688 not the async version is run. NOTE: in the future we plan to make
689 the event loop be the default engine of gdb, and this difference
692 async_init_signals ();
696 /* We need a default language for parsing expressions, so simple things like
697 "set width 0" won't fail if no language is explicitly set in a config file
698 or implicitly set by reading an executable during startup. */
699 set_language (language_c);
700 expected_language = current_language; /* don't warn about the change. */
702 /* All the interpreters should have had a look at things by now.
703 Initialize the selected interpreter. */
705 init_ui_hook (argv0);
708 /* Allocate, initialize a new command line structure for one of the
709 control commands (if/while). */
711 static struct command_line *
712 build_command_line (type, args)
713 enum command_control_type type;
716 struct command_line *cmd;
719 error ("if/while commands require arguments.\n");
721 cmd = (struct command_line *) xmalloc (sizeof (struct command_line));
723 cmd->control_type = type;
727 = (struct command_line **) xmalloc (sizeof (struct command_line *)
729 memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count);
730 cmd->line = savestring (args, strlen (args));
734 /* Build and return a new command structure for the control commands
735 such as "if" and "while". */
737 static struct command_line *
738 get_command_line (type, arg)
739 enum command_control_type type;
742 struct command_line *cmd;
743 struct cleanup *old_chain = NULL;
745 /* Allocate and build a new command line structure. */
746 cmd = build_command_line (type, arg);
748 old_chain = make_cleanup ((make_cleanup_func) free_command_lines, &cmd);
750 /* Read in the body of this command. */
751 if (recurse_read_control_structure (cmd) == invalid_control)
753 warning ("error reading in control structure\n");
754 do_cleanups (old_chain);
758 discard_cleanups (old_chain);
762 /* Recursively print a command (including full control structures). */
764 print_command_line (cmd, depth, stream)
765 struct command_line *cmd;
773 for (i = 0; i < depth; i++)
774 fputs_filtered (" ", stream);
777 /* A simple command, print it and return. */
778 if (cmd->control_type == simple_control)
780 fputs_filtered (cmd->line, stream);
781 fputs_filtered ("\n", stream);
785 /* loop_continue to jump to the start of a while loop, print it
787 if (cmd->control_type == continue_control)
789 fputs_filtered ("loop_continue\n", stream);
793 /* loop_break to break out of a while loop, print it and return. */
794 if (cmd->control_type == break_control)
796 fputs_filtered ("loop_break\n", stream);
800 /* A while command. Recursively print its subcommands before returning. */
801 if (cmd->control_type == while_control)
803 struct command_line *list;
804 fputs_filtered ("while ", stream);
805 fputs_filtered (cmd->line, stream);
806 fputs_filtered ("\n", stream);
807 list = *cmd->body_list;
810 print_command_line (list, depth + 1, stream);
815 /* An if command. Recursively print both arms before returning. */
816 if (cmd->control_type == if_control)
818 fputs_filtered ("if ", stream);
819 fputs_filtered (cmd->line, stream);
820 fputs_filtered ("\n", stream);
822 print_command_line (cmd->body_list[0], depth + 1, stream);
824 /* Show the false arm if it exists. */
825 if (cmd->body_count == 2)
829 for (i = 0; i < depth; i++)
830 fputs_filtered (" ", stream);
832 fputs_filtered ("else\n", stream);
833 print_command_line (cmd->body_list[1], depth + 1, stream);
837 for (i = 0; i < depth; i++)
838 fputs_filtered (" ", stream);
840 fputs_filtered ("end\n", stream);
844 /* Execute the command in CMD. */
846 enum command_control_type
847 execute_control_command (cmd)
848 struct command_line *cmd;
850 struct expression *expr;
851 struct command_line *current;
852 struct cleanup *old_chain = 0;
856 enum command_control_type ret;
859 switch (cmd->control_type)
862 /* A simple command, execute it and return. */
863 new_line = insert_args (cmd->line);
865 return invalid_control;
866 old_chain = make_cleanup ((make_cleanup_func) free_current_contents,
868 execute_command (new_line, 0);
869 ret = cmd->control_type;
872 case continue_control:
874 /* Return for "continue", and "break" so we can either
875 continue the loop at the top, or break out. */
876 ret = cmd->control_type;
881 /* Parse the loop control expression for the while statement. */
882 new_line = insert_args (cmd->line);
884 return invalid_control;
885 old_chain = make_cleanup ((make_cleanup_func) free_current_contents,
887 expr = parse_expression (new_line);
888 make_cleanup ((make_cleanup_func) free_current_contents, &expr);
890 ret = simple_control;
893 /* Keep iterating so long as the expression is true. */
900 /* Evaluate the expression. */
901 val_mark = value_mark ();
902 val = evaluate_expression (expr);
903 cond_result = value_true (val);
904 value_free_to_mark (val_mark);
906 /* If the value is false, then break out of the loop. */
910 /* Execute the body of the while statement. */
911 current = *cmd->body_list;
914 ret = execute_control_command (current);
916 /* If we got an error, or a "break" command, then stop
918 if (ret == invalid_control || ret == break_control)
924 /* If we got a "continue" command, then restart the loop
926 if (ret == continue_control)
929 /* Get the next statement. */
930 current = current->next;
934 /* Reset RET so that we don't recurse the break all the way down. */
935 if (ret == break_control)
936 ret = simple_control;
943 new_line = insert_args (cmd->line);
945 return invalid_control;
946 old_chain = make_cleanup ((make_cleanup_func) free_current_contents,
948 /* Parse the conditional for the if statement. */
949 expr = parse_expression (new_line);
950 make_cleanup ((make_cleanup_func) free_current_contents, &expr);
953 ret = simple_control;
955 /* Evaluate the conditional. */
956 val_mark = value_mark ();
957 val = evaluate_expression (expr);
959 /* Choose which arm to take commands from based on the value of the
960 conditional expression. */
961 if (value_true (val))
962 current = *cmd->body_list;
963 else if (cmd->body_count == 2)
964 current = *(cmd->body_list + 1);
965 value_free_to_mark (val_mark);
967 /* Execute commands in the given arm. */
970 ret = execute_control_command (current);
972 /* If we got an error, get out. */
973 if (ret != simple_control)
976 /* Get the next statement in the body. */
977 current = current->next;
984 warning ("Invalid control type in command structure.");
985 return invalid_control;
989 do_cleanups (old_chain);
994 /* "while" command support. Executes a body of statements while the
995 loop condition is nonzero. */
998 while_command (arg, from_tty)
1002 struct command_line *command = NULL;
1005 command = get_command_line (while_control, arg);
1007 if (command == NULL)
1010 execute_control_command (command);
1011 free_command_lines (&command);
1014 /* "if" command support. Execute either the true or false arm depending
1015 on the value of the if conditional. */
1018 if_command (arg, from_tty)
1022 struct command_line *command = NULL;
1025 command = get_command_line (if_control, arg);
1027 if (command == NULL)
1030 execute_control_command (command);
1031 free_command_lines (&command);
1038 struct user_args *oargs = user_args;
1040 internal_error ("Internal error, arg_cleanup called with no user args.\n");
1042 user_args = user_args->next;
1046 /* Bind the incomming arguments for a user defined command to
1047 $arg0, $arg1 ... $argMAXUSERARGS. */
1049 static struct cleanup *
1053 struct user_args *args;
1054 struct cleanup *old_chain;
1055 unsigned int arg_count = 0;
1057 args = (struct user_args *) xmalloc (sizeof (struct user_args));
1058 memset (args, 0, sizeof (struct user_args));
1060 args->next = user_args;
1063 old_chain = make_cleanup ((make_cleanup_func) arg_cleanup, 0);
1075 if (arg_count >= MAXUSERARGS)
1077 error ("user defined function may only have %d arguments.\n",
1082 /* Strip whitespace. */
1083 while (*p == ' ' || *p == '\t')
1086 /* P now points to an argument. */
1088 user_args->a[arg_count].arg = p;
1090 /* Get to the end of this argument. */
1093 if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote)
1099 else if (*p == '\\')
1122 user_args->a[arg_count].len = p - start_arg;
1129 /* Given character string P, return a point to the first argument ($arg),
1130 or NULL if P contains no arguments. */
1136 while ((p = strchr (p, '$')))
1138 if (strncmp (p, "$arg", 4) == 0 && isdigit (p[4]))
1145 /* Insert the user defined arguments stored in user_arg into the $arg
1146 arguments found in line, with the updated copy being placed into nline. */
1152 char *p, *save_line, *new_line;
1155 /* First we need to know how much memory to allocate for the new line. */
1158 while ((p = locate_arg (line)))
1163 if (i >= user_args->count)
1165 error ("Missing argument %d in user function.\n", i);
1168 len += user_args->a[i].len;
1172 /* Don't forget the tail. */
1173 len += strlen (line);
1175 /* Allocate space for the new line and fill it in. */
1176 new_line = (char *) xmalloc (len + 1);
1177 if (new_line == NULL)
1180 /* Restore pointer to beginning of old line. */
1183 /* Save pointer to beginning of new line. */
1184 save_line = new_line;
1186 while ((p = locate_arg (line)))
1190 memcpy (new_line, line, p - line);
1191 new_line += p - line;
1194 len = user_args->a[i].len;
1197 memcpy (new_line, user_args->a[i].arg, len);
1202 /* Don't forget the tail. */
1203 strcpy (new_line, line);
1205 /* Return a pointer to the beginning of the new line. */
1210 execute_user_command (c, args)
1211 struct cmd_list_element *c;
1214 register struct command_line *cmdlines;
1215 struct cleanup *old_chain;
1216 enum command_control_type ret;
1218 old_chain = setup_user_args (args);
1220 cmdlines = c->user_commands;
1225 /* Set the instream to 0, indicating execution of a
1226 user-defined function. */
1227 old_chain = make_cleanup ((make_cleanup_func) source_cleanup, instream);
1228 instream = (FILE *) 0;
1231 ret = execute_control_command (cmdlines);
1232 if (ret != simple_control && ret != break_control)
1234 warning ("Error in control structure.\n");
1237 cmdlines = cmdlines->next;
1239 do_cleanups (old_chain);
1242 /* Execute the line P as a command.
1243 Pass FROM_TTY as second argument to the defining function. */
1246 execute_command (p, from_tty)
1250 register struct cmd_list_element *c;
1251 register enum language flang;
1252 static int warned = 0;
1253 /* FIXME: These should really be in an appropriate header file */
1254 extern void serial_log_command PARAMS ((const char *));
1258 /* Force cleanup of any alloca areas if using C alloca instead of
1259 a builtin alloca. */
1262 /* This can happen when command_line_input hits end of file. */
1266 serial_log_command (p);
1268 while (*p == ' ' || *p == '\t')
1274 c = lookup_cmd (&p, cmdlist, "", 0, 1);
1276 /* If the target is running, we allow only a limited set of
1278 if (async_p && target_has_async && target_executing)
1279 if (!strcmp (c->name, "help")
1280 && !strcmp (c->name, "pwd")
1281 && !strcmp (c->name, "show")
1282 && !strcmp (c->name, "stop"))
1283 error ("Cannot execute this command while the target is running.");
1285 /* Pass null arg rather than an empty one. */
1288 /* Clear off trailing whitespace, except for set and complete command. */
1289 if (arg && c->type != set_cmd && c->function.cfunc != complete_command)
1291 p = arg + strlen (arg) - 1;
1292 while (p >= arg && (*p == ' ' || *p == '\t'))
1297 /* If this command has been hooked, run the hook first. */
1299 execute_user_command (c->hook, (char *) 0);
1301 if (c->class == class_user)
1302 execute_user_command (c, arg);
1303 else if (c->type == set_cmd || c->type == show_cmd)
1304 do_setshow_command (arg, from_tty & caution, c);
1305 else if (c->function.cfunc == NO_FUNCTION)
1306 error ("That is not a command, just a help topic.");
1307 else if (call_command_hook)
1308 call_command_hook (c, arg, from_tty & caution);
1310 (*c->function.cfunc) (arg, from_tty & caution);
1313 /* Tell the user if the language has changed (except first time). */
1314 if (current_language != expected_language)
1316 if (language_mode == language_mode_auto)
1318 language_info (1); /* Print what changed. */
1323 /* Warn the user if the working language does not match the
1324 language of the current frame. Only warn the user if we are
1325 actually running the program, i.e. there is a stack. */
1326 /* FIXME: This should be cacheing the frame and only running when
1327 the frame changes. */
1329 if (target_has_stack)
1331 flang = get_frame_language ();
1333 && flang != language_unknown
1334 && flang != current_language->la_language)
1336 printf_filtered ("%s\n", lang_frame_mismatch_warn);
1343 /* NOTE 1999-04-29: This function will be static again, once we modify
1344 gdb to use the event loop as the default command loop and we merge
1345 event-top.c into this file, top.c */
1347 command_loop_marker (foo)
1352 /* Read commands from `instream' and execute them
1353 until end of file or error reading instream. */
1358 struct cleanup *old_chain;
1360 int stdin_is_tty = ISATTY (stdin);
1361 long time_at_cmd_start;
1363 long space_at_cmd_start = 0;
1365 extern int display_time;
1366 extern int display_space;
1368 while (instream && !feof (instream))
1371 extern int insert_mode;
1373 if (window_hook && instream == stdin)
1374 (*window_hook) (instream, get_prompt ());
1377 if (instream == stdin && stdin_is_tty)
1378 reinitialize_more_filter ();
1379 old_chain = make_cleanup ((make_cleanup_func) command_loop_marker, 0);
1382 /* A bit of paranoia: I want to make sure the "insert_mode" global
1383 * is clear except when it is being used for command-line editing
1384 * (see tuiIO.c, utils.c); otherwise normal output will
1385 * get messed up in the TUI. So clear it before/after
1386 * the command-line-input call. - RT
1390 /* Get a command-line. This calls the readline package. */
1391 command = command_line_input (instream == stdin ?
1392 get_prompt () : (char *) NULL,
1393 instream == stdin, "prompt");
1400 time_at_cmd_start = get_run_time ();
1405 extern char **environ;
1406 char *lim = (char *) sbrk (0);
1408 space_at_cmd_start = (long) (lim - (char *) &environ);
1412 execute_command (command, instream == stdin);
1413 /* Do any commands attached to breakpoint we stopped at. */
1414 bpstat_do_actions (&stop_bpstat);
1415 do_cleanups (old_chain);
1419 long cmd_time = get_run_time () - time_at_cmd_start;
1421 printf_unfiltered ("Command execution time: %ld.%06ld\n",
1422 cmd_time / 1000000, cmd_time % 1000000);
1428 extern char **environ;
1429 char *lim = (char *) sbrk (0);
1430 long space_now = lim - (char *) &environ;
1431 long space_diff = space_now - space_at_cmd_start;
1433 printf_unfiltered ("Space used: %ld (%c%ld for this command)\n",
1435 (space_diff >= 0 ? '+' : '-'),
1443 /* Commands call this if they do not want to be repeated by null lines. */
1451 /* If we aren't reading from standard input, we are saving the last
1452 thing read from stdin in line and don't want to delete it. Null lines
1453 won't repeat here in any case. */
1454 if (instream == stdin)
1458 /* Read a line from the stream "instream" without command line editing.
1460 It prints PROMPT_ARG once at the start.
1461 Action is compatible with "readline", e.g. space for the result is
1462 malloc'd and should be freed by the caller.
1464 A NULL return means end of file. */
1466 gdb_readline (prompt_arg)
1471 int input_index = 0;
1472 int result_size = 80;
1476 /* Don't use a _filtered function here. It causes the assumed
1477 character position to be off, since the newline we read from
1478 the user is not accounted for. */
1479 fputs_unfiltered (prompt_arg, gdb_stdout);
1481 /* Move to a new line so the entered line doesn't have a prompt
1482 on the front of it. */
1483 fputs_unfiltered ("\n", gdb_stdout);
1485 gdb_flush (gdb_stdout);
1488 result = (char *) xmalloc (result_size);
1492 /* Read from stdin if we are executing a user defined command.
1493 This is the right thing for prompt_for_continue, at least. */
1494 c = fgetc (instream ? instream : stdin);
1498 if (input_index > 0)
1499 /* The last line does not end with a newline. Return it, and
1500 if we are called again fgetc will still return EOF and
1501 we'll return NULL then. */
1508 #ifndef CRLF_SOURCE_FILES
1512 if (input_index > 0 && result[input_index - 1] == '\r')
1518 result[input_index++] = c;
1519 while (input_index >= result_size)
1522 result = (char *) xrealloc (result, result_size);
1526 result[input_index++] = '\0';
1530 /* Variables which control command line editing and history
1531 substitution. These variables are given default values at the end
1533 static int command_editing_p;
1534 /* NOTE 1999-04-29: This variable will be static again, once we modify
1535 gdb to use the event loop as the default command loop and we merge
1536 event-top.c into this file, top.c */
1537 /* static */ int history_expansion_p;
1538 static int write_history_p;
1539 static int history_size;
1540 static char *history_filename;
1542 /* readline uses the word breaks for two things:
1543 (1) In figuring out where to point the TEXT parameter to the
1544 rl_completion_entry_function. Since we don't use TEXT for much,
1545 it doesn't matter a lot what the word breaks are for this purpose, but
1546 it does affect how much stuff M-? lists.
1547 (2) If one of the matches contains a word break character, readline
1548 will quote it. That's why we switch between
1549 gdb_completer_word_break_characters and
1550 gdb_completer_command_word_break_characters. I'm not sure when
1551 we need this behavior (perhaps for funky characters in C++ symbols?). */
1553 /* Variables which are necessary for fancy command line editing. */
1554 char *gdb_completer_word_break_characters =
1555 " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-";
1557 /* When completing on command names, we remove '-' from the list of
1558 word break characters, since we use it in command names. If the
1559 readline library sees one in any of the current completion strings,
1560 it thinks that the string needs to be quoted and automatically supplies
1562 char *gdb_completer_command_word_break_characters =
1563 " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,";
1565 /* Characters that can be used to quote completion strings. Note that we
1566 can't include '"' because the gdb C parser treats such quoted sequences
1568 char *gdb_completer_quote_characters =
1571 /* Functions that are used as part of the fancy command line editing. */
1573 /* This can be used for functions which don't want to complete on symbols
1574 but don't want to complete on anything else either. */
1577 noop_completer (text, prefix)
1584 /* Complete on filenames. */
1586 filename_completer (text, word)
1590 /* From readline. */
1591 extern char *filename_completion_function PARAMS ((char *, int));
1592 int subsequent_name;
1594 int return_val_used;
1595 int return_val_alloced;
1597 return_val_used = 0;
1598 /* Small for testing. */
1599 return_val_alloced = 1;
1600 return_val = (char **) xmalloc (return_val_alloced * sizeof (char *));
1602 subsequent_name = 0;
1606 p = filename_completion_function (text, subsequent_name);
1607 if (return_val_used >= return_val_alloced)
1609 return_val_alloced *= 2;
1611 (char **) xrealloc (return_val,
1612 return_val_alloced * sizeof (char *));
1616 return_val[return_val_used++] = p;
1619 /* Like emacs, don't complete on old versions. Especially useful
1620 in the "source" command. */
1621 if (p[strlen (p) - 1] == '~')
1627 /* Return exactly p. */
1628 return_val[return_val_used++] = p;
1629 else if (word > text)
1631 /* Return some portion of p. */
1632 q = xmalloc (strlen (p) + 5);
1633 strcpy (q, p + (word - text));
1634 return_val[return_val_used++] = q;
1639 /* Return some of TEXT plus p. */
1640 q = xmalloc (strlen (p) + (text - word) + 5);
1641 strncpy (q, word, text - word);
1642 q[text - word] = '\0';
1644 return_val[return_val_used++] = q;
1648 subsequent_name = 1;
1651 /* There is no way to do this just long enough to affect quote inserting
1652 without also affecting the next completion. This should be fixed in
1654 /* Insure that readline does the right thing
1655 with respect to inserting quotes. */
1656 rl_completer_word_break_characters = "";
1661 /* Here are some useful test cases for completion. FIXME: These should
1662 be put in the test suite. They should be tested with both M-? and TAB.
1664 "show output-" "radix"
1665 "show output" "-radix"
1666 "p" ambiguous (commands starting with p--path, print, printf, etc.)
1667 "p " ambiguous (all symbols)
1668 "info t foo" no completions
1669 "info t " no completions
1670 "info t" ambiguous ("info target", "info terminal", etc.)
1671 "info ajksdlfk" no completions
1672 "info ajksdlfk " no completions
1674 "info " ambiguous (all info commands)
1675 "p \"a" no completions (string constant)
1676 "p 'a" ambiguous (all symbols starting with a)
1677 "p b-a" ambiguous (all symbols starting with a)
1678 "p b-" ambiguous (all symbols)
1679 "file Make" "file" (word break hard to screw up here)
1680 "file ../gdb.stabs/we" "ird" (needs to not break word at slash)
1683 /* Generate completions one by one for the completer. Each time we are
1684 called return another potential completion to the caller.
1685 line_completion just completes on commands or passes the buck to the
1686 command's completer function, the stuff specific to symbol completion
1687 is in make_symbol_completion_list.
1689 TEXT is the caller's idea of the "word" we are looking at.
1691 MATCHES is the number of matches that have currently been collected from
1692 calling this completion function. When zero, then we need to initialize,
1693 otherwise the initialization has already taken place and we can just
1694 return the next potential completion string.
1696 LINE_BUFFER is available to be looked at; it contains the entire text
1697 of the line. POINT is the offset in that line of the cursor. You
1698 should pretend that the line ends at POINT.
1700 Returns NULL if there are no more completions, else a pointer to a string
1701 which is a possible completion, it is the caller's responsibility to
1705 line_completion_function (text, matches, line_buffer, point)
1711 static char **list = (char **) NULL; /* Cache of completions */
1712 static int index; /* Next cached completion */
1713 char *output = NULL;
1714 char *tmp_command, *p;
1715 /* Pointer within tmp_command which corresponds to text. */
1717 struct cmd_list_element *c, *result_list;
1721 /* The caller is beginning to accumulate a new set of completions, so
1722 we need to find all of them now, and cache them for returning one at
1723 a time on future calls. */
1727 /* Free the storage used by LIST, but not by the strings inside.
1728 This is because rl_complete_internal () frees the strings. */
1734 /* Choose the default set of word break characters to break completions.
1735 If we later find out that we are doing completions on command strings
1736 (as opposed to strings supplied by the individual command completer
1737 functions, which can be any string) then we will switch to the
1738 special word break set for command strings, which leaves out the
1739 '-' character used in some commands. */
1741 rl_completer_word_break_characters =
1742 gdb_completer_word_break_characters;
1744 /* Decide whether to complete on a list of gdb commands or on symbols. */
1745 tmp_command = (char *) alloca (point + 1);
1748 strncpy (tmp_command, line_buffer, point);
1749 tmp_command[point] = '\0';
1750 /* Since text always contains some number of characters leading up
1751 to point, we can find the equivalent position in tmp_command
1752 by subtracting that many characters from the end of tmp_command. */
1753 word = tmp_command + point - strlen (text);
1757 /* An empty line we want to consider ambiguous; that is, it
1758 could be any command. */
1759 c = (struct cmd_list_element *) -1;
1764 c = lookup_cmd_1 (&p, cmdlist, &result_list, 1);
1767 /* Move p up to the next interesting thing. */
1768 while (*p == ' ' || *p == '\t')
1775 /* It is an unrecognized command. So there are no
1776 possible completions. */
1779 else if (c == (struct cmd_list_element *) -1)
1783 /* lookup_cmd_1 advances p up to the first ambiguous thing, but
1784 doesn't advance over that thing itself. Do so now. */
1786 while (*q && (isalnum (*q) || *q == '-' || *q == '_'))
1788 if (q != tmp_command + point)
1790 /* There is something beyond the ambiguous
1791 command, so there are no possible completions. For
1792 example, "info t " or "info t foo" does not complete
1793 to anything, because "info t" can be "info target" or
1799 /* We're trying to complete on the command which was ambiguous.
1800 This we can deal with. */
1803 list = complete_on_cmdlist (*result_list->prefixlist, p,
1808 list = complete_on_cmdlist (cmdlist, p, word);
1810 /* Insure that readline does the right thing with respect to
1811 inserting quotes. */
1812 rl_completer_word_break_characters =
1813 gdb_completer_command_word_break_characters;
1818 /* We've recognized a full command. */
1820 if (p == tmp_command + point)
1822 /* There is no non-whitespace in the line beyond the command. */
1824 if (p[-1] == ' ' || p[-1] == '\t')
1826 /* The command is followed by whitespace; we need to complete
1827 on whatever comes after command. */
1830 /* It is a prefix command; what comes after it is
1831 a subcommand (e.g. "info "). */
1832 list = complete_on_cmdlist (*c->prefixlist, p, word);
1834 /* Insure that readline does the right thing
1835 with respect to inserting quotes. */
1836 rl_completer_word_break_characters =
1837 gdb_completer_command_word_break_characters;
1841 list = complete_on_enum (c->enums, p, word);
1842 rl_completer_word_break_characters =
1843 gdb_completer_command_word_break_characters;
1847 /* It is a normal command; what comes after it is
1848 completed by the command's completer function. */
1849 list = (*c->completer) (p, word);
1854 /* The command is not followed by whitespace; we need to
1855 complete on the command itself. e.g. "p" which is a
1856 command itself but also can complete to "print", "ptype"
1860 /* Find the command we are completing on. */
1862 while (q > tmp_command)
1864 if (isalnum (q[-1]) || q[-1] == '-' || q[-1] == '_')
1870 list = complete_on_cmdlist (result_list, q, word);
1872 /* Insure that readline does the right thing
1873 with respect to inserting quotes. */
1874 rl_completer_word_break_characters =
1875 gdb_completer_command_word_break_characters;
1880 /* There is non-whitespace beyond the command. */
1882 if (c->prefixlist && !c->allow_unknown)
1884 /* It is an unrecognized subcommand of a prefix command,
1885 e.g. "info adsfkdj". */
1890 list = complete_on_enum (c->enums, p, word);
1894 /* It is a normal command. */
1895 list = (*c->completer) (p, word);
1901 /* If we found a list of potential completions during initialization then
1902 dole them out one at a time. The vector of completions is NULL
1903 terminated, so after returning the last one, return NULL (and continue
1904 to do so) each time we are called after that, until a new list is
1909 output = list[index];
1917 /* Can't do this because readline hasn't yet checked the word breaks
1918 for figuring out whether to insert a quote. */
1920 /* Make sure the word break characters are set back to normal for the
1921 next time that readline tries to complete something. */
1922 rl_completer_word_break_characters =
1923 gdb_completer_word_break_characters;
1929 /* Line completion interface function for readline. */
1932 readline_line_completion_function (text, matches)
1936 return line_completion_function (text, matches, rl_line_buffer, rl_point);
1939 /* Skip over a possibly quoted word (as defined by the quote characters
1940 and word break characters the completer uses). Returns pointer to the
1941 location after the "word". */
1947 char quote_char = '\0';
1950 for (scan = str; *scan != '\0'; scan++)
1952 if (quote_char != '\0')
1954 /* Ignore everything until the matching close quote char */
1955 if (*scan == quote_char)
1957 /* Found matching close quote. */
1962 else if (strchr (gdb_completer_quote_characters, *scan))
1964 /* Found start of a quoted string. */
1967 else if (strchr (gdb_completer_word_break_characters, *scan))
1981 #if STOP_SIGNAL == SIGTSTP
1982 signal (SIGTSTP, SIG_DFL);
1984 kill (getpid (), SIGTSTP);
1985 signal (SIGTSTP, stop_sig);
1987 signal (STOP_SIGNAL, stop_sig);
1989 printf_unfiltered ("%s", get_prompt ());
1990 gdb_flush (gdb_stdout);
1992 /* Forget about any previous command -- null line now will do nothing. */
1995 #endif /* STOP_SIGNAL */
1997 /* Initialize signal handlers. */
2002 /* Under System V the default disposition of a signal is reinstated after
2003 the signal is caught and delivered to an application process. On such
2004 systems one must restore the replacement signal handler if one wishes
2005 to continue handling the signal in one's program. On BSD systems this
2006 is not needed but it is harmless, and it simplifies the code to just do
2007 it unconditionally. */
2008 signal (signo, do_nothing);
2014 signal (SIGINT, request_quit);
2016 /* If SIGTRAP was set to SIG_IGN, then the SIG_IGN will get passed
2017 to the inferior and breakpoints will be ignored. */
2019 signal (SIGTRAP, SIG_DFL);
2022 /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get
2023 passed to the inferior, which we don't want. It would be
2024 possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but
2025 on BSD4.3 systems using vfork, that can affect the
2026 GDB process as well as the inferior (the signal handling tables
2027 might be in memory, shared between the two). Since we establish
2028 a handler for SIGQUIT, when we call exec it will set the signal
2029 to SIG_DFL for us. */
2030 signal (SIGQUIT, do_nothing);
2032 if (signal (SIGHUP, do_nothing) != SIG_IGN)
2033 signal (SIGHUP, disconnect);
2035 signal (SIGFPE, float_handler);
2037 #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER)
2038 signal (SIGWINCH, SIGWINCH_HANDLER);
2042 /* Read one line from the command input stream `instream'
2043 into the local static buffer `linebuffer' (whose current length
2045 The buffer is made bigger as necessary.
2046 Returns the address of the start of the line.
2048 NULL is returned for end of file.
2050 *If* the instream == stdin & stdin is a terminal, the line read
2051 is copied into the file line saver (global var char *line,
2052 length linesize) so that it can be duplicated.
2054 This routine either uses fancy command line editing or
2055 simple input as the user has requested. */
2058 command_line_input (prompt_arg, repeat, annotation_suffix)
2061 char *annotation_suffix;
2063 static char *linebuffer = 0;
2064 static unsigned linelength = 0;
2068 char *local_prompt = prompt_arg;
2072 /* The annotation suffix must be non-NULL. */
2073 if (annotation_suffix == NULL)
2074 annotation_suffix = "";
2076 if (annotation_level > 1 && instream == stdin)
2078 local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg))
2079 + strlen (annotation_suffix) + 40);
2080 if (prompt_arg == NULL)
2081 local_prompt[0] = '\0';
2083 strcpy (local_prompt, prompt_arg);
2084 strcat (local_prompt, "\n\032\032");
2085 strcat (local_prompt, annotation_suffix);
2086 strcat (local_prompt, "\n");
2089 if (linebuffer == 0)
2092 linebuffer = (char *) xmalloc (linelength);
2097 /* Control-C quits instantly if typed while in this loop
2098 since it should not wait until the user types a newline. */
2104 signal (STOP_SIGNAL, handle_stop_sig);
2106 signal (STOP_SIGNAL, stop_sig);
2112 /* Make sure that all output has been output. Some machines may let
2113 you get away with leaving out some of the gdb_flush, but not all. */
2115 gdb_flush (gdb_stdout);
2116 gdb_flush (gdb_stderr);
2118 if (source_file_name != NULL)
2120 ++source_line_number;
2121 sprintf (source_error,
2122 "%s%s:%d: Error in sourced command file:\n",
2125 source_line_number);
2126 error_pre_print = source_error;
2129 if (annotation_level > 1 && instream == stdin)
2131 printf_unfiltered ("\n\032\032pre-");
2132 printf_unfiltered (annotation_suffix);
2133 printf_unfiltered ("\n");
2136 /* Don't use fancy stuff if not talking to stdin. */
2137 if (readline_hook && instream == NULL)
2139 rl = (*readline_hook) (local_prompt);
2141 else if (command_editing_p && instream == stdin && ISATTY (instream))
2143 rl = readline (local_prompt);
2147 rl = gdb_readline (local_prompt);
2150 if (annotation_level > 1 && instream == stdin)
2152 printf_unfiltered ("\n\032\032post-");
2153 printf_unfiltered (annotation_suffix);
2154 printf_unfiltered ("\n");
2157 if (!rl || rl == (char *) EOF)
2162 if (strlen (rl) + 1 + (p - linebuffer) > linelength)
2164 linelength = strlen (rl) + 1 + (p - linebuffer);
2165 nline = (char *) xrealloc (linebuffer, linelength);
2166 p += nline - linebuffer;
2170 /* Copy line. Don't copy null at end. (Leaves line alone
2171 if this was just a newline) */
2175 free (rl); /* Allocated in readline. */
2177 if (p == linebuffer || *(p - 1) != '\\')
2180 p--; /* Put on top of '\'. */
2181 local_prompt = (char *) 0;
2186 signal (STOP_SIGNAL, SIG_DFL);
2193 #define SERVER_COMMAND_LENGTH 7
2195 (p - linebuffer > SERVER_COMMAND_LENGTH)
2196 && STREQN (linebuffer, "server ", SERVER_COMMAND_LENGTH);
2199 /* Note that we don't set `line'. Between this and the check in
2200 dont_repeat, this insures that repeating will still do the
2203 return linebuffer + SERVER_COMMAND_LENGTH;
2206 /* Do history expansion if that is wished. */
2207 if (history_expansion_p && instream == stdin
2208 && ISATTY (instream))
2210 char *history_value;
2213 *p = '\0'; /* Insert null now. */
2214 expanded = history_expand (linebuffer, &history_value);
2217 /* Print the changes. */
2218 printf_unfiltered ("%s\n", history_value);
2220 /* If there was an error, call this function again. */
2223 free (history_value);
2224 return command_line_input (prompt_arg, repeat, annotation_suffix);
2226 if (strlen (history_value) > linelength)
2228 linelength = strlen (history_value) + 1;
2229 linebuffer = (char *) xrealloc (linebuffer, linelength);
2231 strcpy (linebuffer, history_value);
2232 p = linebuffer + strlen (linebuffer);
2233 free (history_value);
2237 /* If we just got an empty line, and that is supposed
2238 to repeat the previous command, return the value in the
2240 if (repeat && p == linebuffer)
2242 for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++);
2248 /* Add line to history if appropriate. */
2249 if (instream == stdin
2250 && ISATTY (stdin) && *linebuffer)
2251 add_history (linebuffer);
2253 /* Note: lines consisting solely of comments are added to the command
2254 history. This is useful when you type a command, and then
2255 realize you don't want to execute it quite yet. You can comment
2256 out the command and then later fetch it from the value history
2257 and remove the '#'. The kill ring is probably better, but some
2258 people are in the habit of commenting things out. */
2260 *p1 = '\0'; /* Found a comment. */
2262 /* Save into global buffer if appropriate. */
2265 if (linelength > linesize)
2267 line = xrealloc (line, linelength);
2268 linesize = linelength;
2270 strcpy (line, linebuffer);
2278 /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH
2279 code bodies. This is typically used when we encounter an "else"
2280 clause for an "if" command. */
2283 realloc_body_list (command, new_length)
2284 struct command_line *command;
2288 struct command_line **body_list;
2290 n = command->body_count;
2292 /* Nothing to do? */
2293 if (new_length <= n)
2296 body_list = (struct command_line **)
2297 xmalloc (sizeof (struct command_line *) * new_length);
2299 memcpy (body_list, command->body_list, sizeof (struct command_line *) * n);
2301 free (command->body_list);
2302 command->body_list = body_list;
2303 command->body_count = new_length;
2306 /* Read one line from the input stream. If the command is an "else" or
2307 "end", return such an indication to the caller. */
2309 static enum misc_command_type
2310 read_next_line (command)
2311 struct command_line **command;
2313 char *p, *p1, *prompt_ptr, control_prompt[256];
2316 if (control_level >= 254)
2317 error ("Control nesting too deep!\n");
2319 /* Set a prompt based on the nesting of the control commands. */
2320 if (instream == stdin || (instream == 0 && readline_hook != NULL))
2322 for (i = 0; i < control_level; i++)
2323 control_prompt[i] = ' ';
2324 control_prompt[i] = '>';
2325 control_prompt[i + 1] = '\0';
2326 prompt_ptr = (char *) &control_prompt[0];
2331 p = command_line_input (prompt_ptr, instream == stdin, "commands");
2333 /* Not sure what to do here. */
2337 /* Strip leading and trailing whitespace. */
2338 while (*p == ' ' || *p == '\t')
2341 p1 = p + strlen (p);
2342 while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t'))
2345 /* Blanks and comments don't really do anything, but we need to
2346 distinguish them from else, end and other commands which can be
2348 if (p1 == p || p[0] == '#')
2351 /* Is this the end of a simple, while, or if control structure? */
2352 if (p1 - p == 3 && !strncmp (p, "end", 3))
2355 /* Is the else clause of an if control structure? */
2356 if (p1 - p == 4 && !strncmp (p, "else", 4))
2357 return else_command;
2359 /* Check for while, if, break, continue, etc and build a new command
2360 line structure for them. */
2361 if (p1 - p > 5 && !strncmp (p, "while", 5))
2362 *command = build_command_line (while_control, p + 6);
2363 else if (p1 - p > 2 && !strncmp (p, "if", 2))
2364 *command = build_command_line (if_control, p + 3);
2365 else if (p1 - p == 10 && !strncmp (p, "loop_break", 10))
2367 *command = (struct command_line *)
2368 xmalloc (sizeof (struct command_line));
2369 (*command)->next = NULL;
2370 (*command)->line = NULL;
2371 (*command)->control_type = break_control;
2372 (*command)->body_count = 0;
2373 (*command)->body_list = NULL;
2375 else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13))
2377 *command = (struct command_line *)
2378 xmalloc (sizeof (struct command_line));
2379 (*command)->next = NULL;
2380 (*command)->line = NULL;
2381 (*command)->control_type = continue_control;
2382 (*command)->body_count = 0;
2383 (*command)->body_list = NULL;
2387 /* A normal command. */
2388 *command = (struct command_line *)
2389 xmalloc (sizeof (struct command_line));
2390 (*command)->next = NULL;
2391 (*command)->line = savestring (p, p1 - p);
2392 (*command)->control_type = simple_control;
2393 (*command)->body_count = 0;
2394 (*command)->body_list = NULL;
2397 /* Nothing special. */
2401 /* Recursively read in the control structures and create a command_line
2402 structure from them.
2404 The parent_control parameter is the control structure in which the
2405 following commands are nested. */
2407 static enum command_control_type
2408 recurse_read_control_structure (current_cmd)
2409 struct command_line *current_cmd;
2411 int current_body, i;
2412 enum misc_command_type val;
2413 enum command_control_type ret;
2414 struct command_line **body_ptr, *child_tail, *next;
2419 /* Sanity checks. */
2420 if (current_cmd->control_type == simple_control)
2422 error ("Recursed on a simple control type\n");
2423 return invalid_control;
2426 if (current_body > current_cmd->body_count)
2428 error ("Allocated body is smaller than this command type needs\n");
2429 return invalid_control;
2432 /* Read lines from the input stream and build control structures. */
2438 val = read_next_line (&next);
2440 /* Just skip blanks and comments. */
2441 if (val == nop_command)
2444 if (val == end_command)
2446 if (current_cmd->control_type == while_control
2447 || current_cmd->control_type == if_control)
2449 /* Success reading an entire control structure. */
2450 ret = simple_control;
2455 ret = invalid_control;
2460 /* Not the end of a control structure. */
2461 if (val == else_command)
2463 if (current_cmd->control_type == if_control
2464 && current_body == 1)
2466 realloc_body_list (current_cmd, 2);
2473 ret = invalid_control;
2480 child_tail->next = next;
2484 body_ptr = current_cmd->body_list;
2485 for (i = 1; i < current_body; i++)
2494 /* If the latest line is another control structure, then recurse
2496 if (next->control_type == while_control
2497 || next->control_type == if_control)
2500 ret = recurse_read_control_structure (next);
2503 if (ret != simple_control)
2513 /* Read lines from the input stream and accumulate them in a chain of
2514 struct command_line's, which is then returned. For input from a
2515 terminal, the special command "end" is used to mark the end of the
2516 input, and is not included in the returned chain of commands. */
2518 #define END_MESSAGE "End with a line saying just \"end\"."
2520 struct command_line *
2521 read_command_lines (prompt_arg, from_tty)
2525 struct command_line *head, *tail, *next;
2526 struct cleanup *old_chain;
2527 enum command_control_type ret;
2528 enum misc_command_type val;
2531 if (readline_begin_hook)
2533 /* Note - intentional to merge messages with no newline */
2534 (*readline_begin_hook) ("%s %s\n", prompt_arg, END_MESSAGE);
2536 else if (from_tty && input_from_terminal_p ())
2538 printf_unfiltered ("%s\n%s\n", prompt_arg, END_MESSAGE);
2539 gdb_flush (gdb_stdout);
2547 val = read_next_line (&next);
2549 /* Ignore blank lines or comments. */
2550 if (val == nop_command)
2553 if (val == end_command)
2555 ret = simple_control;
2559 if (val != ok_command)
2561 ret = invalid_control;
2565 if (next->control_type == while_control
2566 || next->control_type == if_control)
2569 ret = recurse_read_control_structure (next);
2572 if (ret == invalid_control)
2583 old_chain = make_cleanup ((make_cleanup_func) free_command_lines,
2593 if (ret != invalid_control)
2595 discard_cleanups (old_chain);
2598 do_cleanups (old_chain);
2601 if (readline_end_hook)
2603 (*readline_end_hook) ();
2608 /* Free a chain of struct command_line's. */
2611 free_command_lines (lptr)
2612 struct command_line **lptr;
2614 register struct command_line *l = *lptr;
2615 register struct command_line *next;
2616 struct command_line **blist;
2621 if (l->body_count > 0)
2623 blist = l->body_list;
2624 for (i = 0; i < l->body_count; i++, blist++)
2625 free_command_lines (blist);
2634 /* Add an element to the list of info subcommands. */
2637 add_info (name, fun, doc)
2639 void (*fun) PARAMS ((char *, int));
2642 add_cmd (name, no_class, fun, doc, &infolist);
2645 /* Add an alias to the list of info subcommands. */
2648 add_info_alias (name, oldname, abbrev_flag)
2653 add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist);
2656 /* The "info" command is defined as a prefix, with allow_unknown = 0.
2657 Therefore, its own definition is called only for "info" with no args. */
2661 info_command (arg, from_tty)
2665 printf_unfiltered ("\"info\" must be followed by the name of an info command.\n");
2666 help_list (infolist, "info ", -1, gdb_stdout);
2669 /* The "complete" command is used by Emacs to implement completion. */
2673 complete_command (arg, from_tty)
2685 argpoint = strlen (arg);
2687 for (completion = line_completion_function (arg, i = 0, arg, argpoint);
2689 completion = line_completion_function (arg, ++i, arg, argpoint))
2691 printf_unfiltered ("%s\n", completion);
2696 /* The "show" command with no arguments shows all the settings. */
2700 show_command (arg, from_tty)
2704 cmd_show_list (showlist, from_tty, "");
2707 /* Add an element to the list of commands. */
2710 add_com (name, class, fun, doc)
2712 enum command_class class;
2713 void (*fun) PARAMS ((char *, int));
2716 add_cmd (name, class, fun, doc, &cmdlist);
2719 /* Add an alias or abbreviation command to the list of commands. */
2722 add_com_alias (name, oldname, class, abbrev_flag)
2725 enum command_class class;
2728 add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist);
2735 error ("Argument required (%s).", why);
2740 help_command (command, from_tty)
2742 int from_tty; /* Ignored */
2744 help_cmd (command, gdb_stdout);
2748 validate_comname (comname)
2754 error_no_arg ("name of command to define");
2759 if (!isalnum (*p) && *p != '-' && *p != '_')
2760 error ("Junk in argument list: \"%s\"", p);
2765 /* This is just a placeholder in the command data structures. */
2767 user_defined_command (ignore, from_tty)
2774 define_command (comname, from_tty)
2778 register struct command_line *cmds;
2779 register struct cmd_list_element *c, *newc, *hookc = 0;
2780 char *tem = comname;
2782 #define HOOK_STRING "hook-"
2785 validate_comname (comname);
2787 /* Look it up, and verify that we got an exact match. */
2788 c = lookup_cmd (&tem, cmdlist, "", -1, 1);
2789 if (c && !STREQ (comname, c->name))
2794 if (c->class == class_user || c->class == class_alias)
2795 tem = "Redefine command \"%s\"? ";
2797 tem = "Really redefine built-in command \"%s\"? ";
2798 if (!query (tem, c->name))
2799 error ("Command \"%s\" not redefined.", c->name);
2802 /* If this new command is a hook, then mark the command which it
2803 is hooking. Note that we allow hooking `help' commands, so that
2804 we can hook the `stop' pseudo-command. */
2806 if (!strncmp (comname, HOOK_STRING, HOOK_LEN))
2808 /* Look up cmd it hooks, and verify that we got an exact match. */
2809 tem = comname + HOOK_LEN;
2810 hookc = lookup_cmd (&tem, cmdlist, "", -1, 0);
2811 if (hookc && !STREQ (comname + HOOK_LEN, hookc->name))
2815 warning ("Your new `%s' command does not hook any existing command.",
2817 if (!query ("Proceed? "))
2818 error ("Not confirmed.");
2822 comname = savestring (comname, strlen (comname));
2824 /* If the rest of the commands will be case insensitive, this one
2825 should behave in the same manner. */
2826 for (tem = comname; *tem; tem++)
2828 *tem = tolower (*tem);
2830 sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname);
2831 cmds = read_command_lines (tmpbuf, from_tty);
2833 if (c && c->class == class_user)
2834 free_command_lines (&c->user_commands);
2836 newc = add_cmd (comname, class_user, user_defined_command,
2837 (c && c->class == class_user)
2838 ? c->doc : savestring ("User-defined.", 13), &cmdlist);
2839 newc->user_commands = cmds;
2841 /* If this new command is a hook, then mark both commands as being
2845 hookc->hook = newc; /* Target gets hooked. */
2846 newc->hookee = hookc; /* We are marked as hooking target cmd. */
2851 document_command (comname, from_tty)
2855 struct command_line *doclines;
2856 register struct cmd_list_element *c;
2857 char *tem = comname;
2860 validate_comname (comname);
2862 c = lookup_cmd (&tem, cmdlist, "", 0, 1);
2864 if (c->class != class_user)
2865 error ("Command \"%s\" is built-in.", comname);
2867 sprintf (tmpbuf, "Type documentation for \"%s\".", comname);
2868 doclines = read_command_lines (tmpbuf, from_tty);
2874 register struct command_line *cl1;
2875 register int len = 0;
2877 for (cl1 = doclines; cl1; cl1 = cl1->next)
2878 len += strlen (cl1->line) + 1;
2880 c->doc = (char *) xmalloc (len + 1);
2883 for (cl1 = doclines; cl1; cl1 = cl1->next)
2885 strcat (c->doc, cl1->line);
2887 strcat (c->doc, "\n");
2891 free_command_lines (&doclines);
2894 /* Print the GDB banner. */
2896 print_gdb_version (stream)
2899 /* From GNU coding standards, first line is meant to be easy for a
2900 program to parse, and is just canonical program name and version
2901 number, which starts after last space. */
2903 fprintf_filtered (stream, "GNU gdb %s\n", version);
2905 /* Second line is a copyright notice. */
2907 fprintf_filtered (stream, "Copyright 1998 Free Software Foundation, Inc.\n");
2909 /* Following the copyright is a brief statement that the program is
2910 free software, that users are free to copy and change it on
2911 certain conditions, that it is covered by the GNU GPL, and that
2912 there is no warranty. */
2914 fprintf_filtered (stream, "\
2915 GDB is free software, covered by the GNU General Public License, and you are\n\
2916 welcome to change it and/or distribute copies of it under certain conditions.\n\
2917 Type \"show copying\" to see the conditions.\n\
2918 There is absolutely no warranty for GDB. Type \"show warranty\" for details.\n");
2920 /* After the required info we print the configuration information. */
2922 fprintf_filtered (stream, "This GDB was configured as \"");
2923 if (!STREQ (host_name, target_name))
2925 fprintf_filtered (stream, "--host=%s --target=%s", host_name, target_name);
2929 fprintf_filtered (stream, "%s", host_name);
2931 fprintf_filtered (stream, "\".");
2936 show_version (args, from_tty)
2941 print_gdb_version (gdb_stdout);
2942 printf_filtered ("\n");
2946 /* get_prompt: access method for the GDB prompt string. */
2948 #define MAX_PROMPT_SIZE 256
2951 * int get_prompt_1 (char * buf);
2953 * Work-horse for get_prompt (called via catch_errors).
2954 * Argument is buffer to hold the formatted prompt.
2956 * Returns: 1 for success (use formatted prompt)
2957 * 0 for failure (use gdb_prompt_string).
2960 static int gdb_prompt_escape;
2963 get_prompt_1 (formatted_prompt)
2964 char *formatted_prompt;
2969 local_prompt = PROMPT (0);
2971 local_prompt = gdb_prompt_string;
2974 if (gdb_prompt_escape == 0)
2976 return 0; /* do no formatting */
2979 /* formatted prompt */
2981 char fmt[40], *promptp, *outp, *tmp;
2988 struct type *arg_type, *elt_type;
2990 promptp = local_prompt;
2991 outp = formatted_prompt;
2993 while (*promptp != '\0')
2995 int available = MAX_PROMPT_SIZE - (outp - formatted_prompt) - 1;
2997 if (*promptp != gdb_prompt_escape)
2999 if (available >= 1) /* overflow protect */
3000 *outp++ = *promptp++;
3004 /* GDB prompt string contains escape char. Parse for arg.
3005 Two consecutive escape chars followed by arg followed by
3006 a comma means to insert the arg using a default format.
3007 Otherwise a printf format string may be included between
3008 the two escape chars. eg:
3009 %%foo, insert foo using default format
3010 %2.2f%foo, insert foo using "%2.2f" format
3011 A mismatch between the format string and the data type
3012 of "foo" is an error (which we don't know how to protect
3015 fmt[0] = '\0'; /* assume null format string */
3016 if (promptp[1] == gdb_prompt_escape) /* double esc char */
3018 promptp += 2; /* skip past two escape chars. */
3022 /* extract format string from between two esc chars */
3026 fmt[i++] = *promptp++; /* copy format string */
3028 while (i < sizeof (fmt) - 1 &&
3029 *promptp != gdb_prompt_escape &&
3032 if (*promptp != gdb_prompt_escape)
3033 error ("Syntax error at prompt position %d",
3034 promptp - local_prompt);
3037 promptp++; /* skip second escape char */
3038 fmt[i++] = '\0'; /* terminate the format string */
3042 arg_val = parse_to_comma_and_eval (&promptp);
3043 if (*promptp == ',')
3044 promptp++; /* skip past the comma */
3045 arg_type = check_typedef (VALUE_TYPE (arg_val));
3046 switch (TYPE_CODE (arg_type))
3048 case TYPE_CODE_ARRAY:
3049 elt_type = check_typedef (TYPE_TARGET_TYPE (arg_type));
3050 if (TYPE_LENGTH (arg_type) > 0 &&
3051 TYPE_LENGTH (elt_type) == 1 &&
3052 TYPE_CODE (elt_type) == TYPE_CODE_INT)
3054 int len = TYPE_LENGTH (arg_type);
3056 if (VALUE_LAZY (arg_val))
3057 value_fetch_lazy (arg_val);
3058 tmp = VALUE_CONTENTS (arg_val);
3060 if (len > available)
3061 len = available; /* overflow protect */
3063 /* FIXME: how to protect GDB from crashing
3064 from bad user-supplied format string? */
3066 sprintf (outp, fmt, tmp);
3068 strncpy (outp, tmp, len);
3073 elt_type = check_typedef (TYPE_TARGET_TYPE (arg_type));
3074 addrval = value_as_pointer (arg_val);
3076 if (TYPE_LENGTH (elt_type) == 1 &&
3077 TYPE_CODE (elt_type) == TYPE_CODE_INT &&
3080 /* display it as a string */
3081 char *default_fmt = "%s";
3085 /* Limiting the number of bytes that the following call
3086 will read protects us from sprintf overflow later. */
3087 i = target_read_string (addrval, /* src */
3089 available, /* len */
3091 if (err) /* read failed */
3092 error ("%s on target_read", safe_strerror (err));
3094 tmp[i] = '\0'; /* force-terminate string */
3095 /* FIXME: how to protect GDB from crashing
3096 from bad user-supplied format string? */
3097 sprintf (outp, fmt[0] == 0 ? default_fmt : fmt,
3103 /* display it as a pointer */
3104 char *default_fmt = "0x%x";
3106 /* FIXME: how to protect GDB from crashing
3107 from bad user-supplied format string? */
3108 if (available >= 16 /*? */ ) /* overflow protect */
3109 sprintf (outp, fmt[0] == 0 ? default_fmt : fmt,
3115 char *default_fmt = "%g";
3117 doubleval = value_as_double (arg_val);
3118 /* FIXME: how to protect GDB from crashing
3119 from bad user-supplied format string? */
3120 if (available >= 16 /*? */ ) /* overflow protect */
3121 sprintf (outp, fmt[0] == 0 ? default_fmt : fmt,
3122 (double) doubleval);
3127 char *default_fmt = "%d";
3129 longval = value_as_long (arg_val);
3130 /* FIXME: how to protect GDB from crashing
3131 from bad user-supplied format string? */
3132 if (available >= 16 /*? */ ) /* overflow protect */
3133 sprintf (outp, fmt[0] == 0 ? default_fmt : fmt,
3137 case TYPE_CODE_BOOL:
3139 /* no default format for bool */
3140 longval = value_as_long (arg_val);
3141 if (available >= 8 /*? */ ) /* overflow protect */
3144 strcpy (outp, "<true>");
3146 strcpy (outp, "<false>");
3150 case TYPE_CODE_ENUM:
3152 /* no default format for enum */
3153 longval = value_as_long (arg_val);
3154 len = TYPE_NFIELDS (arg_type);
3155 /* find enum name if possible */
3156 for (i = 0; i < len; i++)
3157 if (TYPE_FIELD_BITPOS (arg_type, i) == longval)
3158 break; /* match -- end loop */
3160 if (i < len) /* enum name found */
3162 char *name = TYPE_FIELD_NAME (arg_type, i);
3164 strncpy (outp, name, available);
3165 /* in casel available < strlen (name), */
3166 outp[available] = '\0';
3170 if (available >= 16 /*? */ ) /* overflow protect */
3171 sprintf (outp, "%ld", (long) longval);
3175 case TYPE_CODE_VOID:
3177 break; /* void type -- no output */
3179 error ("bad data type at prompt position %d",
3180 promptp - local_prompt);
3183 outp += strlen (outp);
3186 *outp++ = '\0'; /* terminate prompt string */
3194 static char buf[MAX_PROMPT_SIZE];
3196 if (catch_errors (get_prompt_1, buf, "bad formatted prompt: ",
3199 return &buf[0]; /* successful formatted prompt */
3203 /* Prompt could not be formatted. */
3207 return gdb_prompt_string;
3215 /* ??rehrauer: I don't know why this fails, since it looks as though
3216 assignments to prompt are wrapped in calls to savestring...
3221 PROMPT (0) = savestring (s, strlen (s));
3223 gdb_prompt_string = savestring (s, strlen (s));
3227 /* If necessary, make the user confirm that we should quit. Return
3228 non-zero if we should quit, zero if we shouldn't. */
3233 if (inferior_pid != 0 && target_has_execution)
3237 /* This is something of a hack. But there's no reliable way to
3238 see if a GUI is running. The `use_windows' variable doesn't
3241 s = "A debugging session is active.\nDo you still want to close the debugger?";
3242 else if (attach_flag)
3243 s = "The program is running. Quit anyway (and detach it)? ";
3245 s = "The program is running. Exit anyway? ";
3254 /* Quit without asking for confirmation. */
3257 quit_force (args, from_tty)
3263 /* An optional expression may be used to cause gdb to terminate with the
3264 value of that expression. */
3267 value_ptr val = parse_and_eval (args);
3269 exit_code = (int) value_as_long (val);
3272 if (inferior_pid != 0 && target_has_execution)
3275 target_detach (args, from_tty);
3280 /* UDI wants this, to kill the TIP. */
3283 /* Save the history information if it is appropriate to do so. */
3284 if (write_history_p && history_filename)
3285 write_history (history_filename);
3287 do_final_cleanups (ALL_CLEANUPS); /* Do any final cleanups before exiting */
3290 /* tuiDo((TuiOpaqueFuncPtr)tuiCleanUp); */
3291 /* The above does not need to be inside a tuiDo(), since
3292 * it is not manipulating the curses screen, but rather,
3293 * it is tearing it down.
3302 /* Handle the quit command. */
3305 quit_command (args, from_tty)
3309 if (!quit_confirm ())
3310 error ("Not confirmed.");
3311 quit_force (args, from_tty);
3314 /* Returns whether GDB is running on a terminal and whether the user
3315 desires that questions be asked of them on that terminal. */
3318 input_from_terminal_p ()
3320 return gdb_has_a_terminal () && (instream == stdin) & caution;
3325 pwd_command (args, from_tty)
3330 error ("The \"pwd\" command does not take an argument: %s", args);
3331 getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
3333 if (!STREQ (gdb_dirbuf, current_directory))
3334 printf_unfiltered ("Working directory %s\n (canonically %s).\n",
3335 current_directory, gdb_dirbuf);
3337 printf_unfiltered ("Working directory %s.\n", current_directory);
3341 cd_command (dir, from_tty)
3346 /* Found something other than leading repetitions of "/..". */
3347 int found_real_path;
3350 /* If the new directory is absolute, repeat is a no-op; if relative,
3351 repeat might be useful but is more likely to be a mistake. */
3355 error_no_arg ("new working directory");
3357 dir = tilde_expand (dir);
3358 make_cleanup (free, dir);
3360 if (chdir (dir) < 0)
3361 perror_with_name (dir);
3363 #if defined(_WIN32) || defined(__MSDOS__)
3364 /* There's too much mess with DOSish names like "d:", "d:.",
3365 "d:./foo" etc. Instead of having lots of special #ifdef'ed code,
3366 simply get the canonicalized name of the current directory. */
3367 dir = getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
3371 if (SLASH_P (dir[len-1]))
3373 /* Remove the trailing slash unless this is a root directory
3374 (including a drive letter on non-Unix systems). */
3375 if (!(len == 1) /* "/" */
3376 #if defined(_WIN32) || defined(__MSDOS__)
3377 && !(!SLASH_P (*dir) && ROOTED_P (dir) && len <= 3) /* "d:/" */
3383 dir = savestring (dir, len);
3385 current_directory = dir;
3388 if (SLASH_P (current_directory[strlen (current_directory) - 1]))
3389 current_directory = concat (current_directory, dir, NULL);
3391 current_directory = concat (current_directory, SLASH_STRING, dir, NULL);
3395 /* Now simplify any occurrences of `.' and `..' in the pathname. */
3397 found_real_path = 0;
3398 for (p = current_directory; *p;)
3400 if (SLASH_P (p[0]) && p[1] == '.' && (p[2] == 0 || SLASH_P (p[2])))
3402 else if (SLASH_P (p[0]) && p[1] == '.' && p[2] == '.'
3403 && (p[3] == 0 || SLASH_P (p[3])))
3405 if (found_real_path)
3407 /* Search backwards for the directory just before the "/.."
3408 and obliterate it and the "/..". */
3410 while (q != current_directory && !SLASH_P (q[-1]))
3413 if (q == current_directory)
3414 /* current_directory is
3415 a relative pathname ("can't happen"--leave it alone). */
3419 strcpy (q - 1, p + 3);
3424 /* We are dealing with leading repetitions of "/..", for example
3425 "/../..", which is the Mach super-root. */
3430 found_real_path = 1;
3435 forget_cached_source_info ();
3438 pwd_command ((char *) 0, 1);
3441 struct source_cleanup_lines_args
3445 char *old_pre_error;
3446 char *old_error_pre_print;
3450 source_cleanup_lines (args)
3453 struct source_cleanup_lines_args *p =
3454 (struct source_cleanup_lines_args *) args;
3455 source_line_number = p->old_line;
3456 source_file_name = p->old_file;
3457 source_pre_error = p->old_pre_error;
3458 error_pre_print = p->old_error_pre_print;
3463 source_command (args, from_tty)
3468 struct cleanup *old_cleanups;
3470 struct source_cleanup_lines_args old_lines;
3475 error ("source command requires pathname of file to source.");
3478 file = tilde_expand (file);
3479 old_cleanups = make_cleanup (free, file);
3481 stream = fopen (file, FOPEN_RT);
3485 perror_with_name (file);
3490 make_cleanup ((make_cleanup_func) fclose, stream);
3492 old_lines.old_line = source_line_number;
3493 old_lines.old_file = source_file_name;
3494 old_lines.old_pre_error = source_pre_error;
3495 old_lines.old_error_pre_print = error_pre_print;
3496 make_cleanup (source_cleanup_lines, &old_lines);
3497 source_line_number = 0;
3498 source_file_name = file;
3499 source_pre_error = error_pre_print == NULL ? "" : error_pre_print;
3500 source_pre_error = savestring (source_pre_error, strlen (source_pre_error));
3501 make_cleanup (free, source_pre_error);
3502 /* This will get set every time we read a line. So it won't stay "" for
3504 error_pre_print = "";
3506 needed_length = strlen (source_file_name) + strlen (source_pre_error) + 80;
3507 if (source_error_allocated < needed_length)
3509 source_error_allocated *= 2;
3510 if (source_error_allocated < needed_length)
3511 source_error_allocated = needed_length;
3512 if (source_error == NULL)
3513 source_error = xmalloc (source_error_allocated);
3515 source_error = xrealloc (source_error, source_error_allocated);
3518 read_command_file (stream);
3520 do_cleanups (old_cleanups);
3525 echo_command (text, from_tty)
3533 while ((c = *p++) != '\0')
3537 /* \ at end of argument is used after spaces
3538 so they won't be lost. */
3542 c = parse_escape (&p);
3544 printf_filtered ("%c", c);
3547 printf_filtered ("%c", c);
3550 /* Force this output to appear now. */
3552 gdb_flush (gdb_stdout);
3557 dont_repeat_command (ignored, from_tty)
3561 *line = 0; /* Can't call dont_repeat here because we're not
3562 necessarily reading from stdin. */
3565 /* Functions to manipulate command line editing control variables. */
3567 /* Number of commands to print in each call to show_commands. */
3568 #define Hist_print 10
3570 show_commands (args, from_tty)
3574 /* Index for history commands. Relative to history_base. */
3577 /* Number of the history entry which we are planning to display next.
3578 Relative to history_base. */
3581 /* The first command in the history which doesn't exist (i.e. one more
3582 than the number of the last command). Relative to history_base. */
3585 extern HIST_ENTRY *history_get PARAMS ((int));
3587 /* Print out some of the commands from the command history. */
3588 /* First determine the length of the history list. */
3589 hist_len = history_size;
3590 for (offset = 0; offset < history_size; offset++)
3592 if (!history_get (history_base + offset))
3601 if (args[0] == '+' && args[1] == '\0')
3602 /* "info editing +" should print from the stored position. */
3605 /* "info editing <exp>" should print around command number <exp>. */
3606 num = (parse_and_eval_address (args) - history_base) - Hist_print / 2;
3608 /* "show commands" means print the last Hist_print commands. */
3611 num = hist_len - Hist_print;
3617 /* If there are at least Hist_print commands, we want to display the last
3618 Hist_print rather than, say, the last 6. */
3619 if (hist_len - num < Hist_print)
3621 num = hist_len - Hist_print;
3626 for (offset = num; offset < num + Hist_print && offset < hist_len; offset++)
3628 printf_filtered ("%5d %s\n", history_base + offset,
3629 (history_get (history_base + offset))->line);
3632 /* The next command we want to display is the next one that we haven't
3636 /* If the user repeats this command with return, it should do what
3637 "show commands +" does. This is unnecessary if arg is null,
3638 because "show commands +" is not useful after "show commands". */
3639 if (from_tty && args)
3646 /* Called by do_setshow_command. */
3649 set_history_size_command (args, from_tty, c)
3652 struct cmd_list_element *c;
3654 if (history_size == INT_MAX)
3655 unstifle_history ();
3656 else if (history_size >= 0)
3657 stifle_history (history_size);
3660 history_size = INT_MAX;
3661 error ("History size must be non-negative");
3667 set_history (args, from_tty)
3671 printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n");
3672 help_list (sethistlist, "set history ", -1, gdb_stdout);
3677 show_history (args, from_tty)
3681 cmd_show_list (showhistlist, from_tty, "");
3684 int info_verbose = 0; /* Default verbose msgs off */
3686 /* Called by do_setshow_command. An elaborate joke. */
3689 set_verbose (args, from_tty, c)
3692 struct cmd_list_element *c;
3694 char *cmdname = "verbose";
3695 struct cmd_list_element *showcmd;
3697 showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1);
3701 c->doc = "Set verbose printing of informational messages.";
3702 showcmd->doc = "Show verbose printing of informational messages.";
3706 c->doc = "Set verbosity.";
3707 showcmd->doc = "Show verbosity.";
3712 float_handler (signo)
3715 /* This message is based on ANSI C, section 4.7. Note that integer
3716 divide by zero causes this, so "float" is a misnomer. */
3717 signal (SIGFPE, float_handler);
3718 error ("Erroneous arithmetic operation.");
3732 enablebreaklist = NULL;
3737 showhistlist = NULL;
3738 unsethistlist = NULL;
3739 maintenancelist = NULL;
3740 maintenanceinfolist = NULL;
3741 maintenanceprintlist = NULL;
3742 setprintlist = NULL;
3743 showprintlist = NULL;
3744 setchecklist = NULL;
3745 showchecklist = NULL;
3748 /* Init the history buffer. Note that we are called after the init file(s)
3749 * have been read so that the user can change the history file via his
3750 * .gdbinit file (for instance). The GDBHISTFILE environment variable
3751 * overrides all of this.
3759 tmpenv = getenv ("HISTSIZE");
3761 history_size = atoi (tmpenv);
3762 else if (!history_size)
3765 stifle_history (history_size);
3767 tmpenv = getenv ("GDBHISTFILE");
3769 history_filename = savestring (tmpenv, strlen (tmpenv));
3770 else if (!history_filename)
3772 /* We include the current directory so that if the user changes
3773 directories the file written will be the same as the one
3776 /* No leading dots in file names are allowed on MSDOS. */
3777 history_filename = concat (current_directory, "/_gdb_history", NULL);
3779 history_filename = concat (current_directory, "/.gdb_history", NULL);
3782 read_history (history_filename);
3788 struct cmd_list_element *c;
3790 /* If we are running the asynchronous version,
3791 we initialize the prompts differently. */
3794 gdb_prompt_string = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT));
3798 /* initialize the prompt stack to a simple "(gdb) " prompt or to
3799 whatever the DEFAULT_PROMPT is. */
3800 the_prompts.top = 0;
3802 PROMPT (0) = savestring (DEFAULT_PROMPT, strlen (DEFAULT_PROMPT));
3804 /* Set things up for annotation_level > 1, if the user ever decides
3806 async_annotation_suffix = "prompt";
3807 /* Set the variable associated with the setshow prompt command. */
3808 new_async_prompt = savestring (PROMPT (0), strlen (PROMPT (0)));
3810 gdb_prompt_escape = 0; /* default to none. */
3812 /* Set the important stuff up for command editing. */
3813 command_editing_p = 1;
3814 history_expansion_p = 0;
3815 write_history_p = 0;
3817 /* Setup important stuff for command line editing. */
3818 rl_completion_entry_function = (int (*)()) readline_line_completion_function;
3819 rl_completer_word_break_characters = gdb_completer_word_break_characters;
3820 rl_completer_quote_characters = gdb_completer_quote_characters;
3821 rl_readline_name = "gdb";
3823 /* Define the classes of commands.
3824 They will appear in the help list in the reverse of this order. */
3826 add_cmd ("internals", class_maintenance, NO_FUNCTION,
3827 "Maintenance commands.\n\
3828 Some gdb commands are provided just for use by gdb maintainers.\n\
3829 These commands are subject to frequent change, and may not be as\n\
3830 well documented as user commands.",
3832 add_cmd ("obscure", class_obscure, NO_FUNCTION, "Obscure features.", &cmdlist);
3833 add_cmd ("aliases", class_alias, NO_FUNCTION, "Aliases of other commands.", &cmdlist);
3834 add_cmd ("user-defined", class_user, NO_FUNCTION, "User-defined commands.\n\
3835 The commands in this class are those defined by the user.\n\
3836 Use the \"define\" command to define a command.", &cmdlist);
3837 add_cmd ("support", class_support, NO_FUNCTION, "Support facilities.", &cmdlist);
3839 add_cmd ("status", class_info, NO_FUNCTION, "Status inquiries.", &cmdlist);
3840 add_cmd ("files", class_files, NO_FUNCTION, "Specifying and examining files.", &cmdlist);
3841 add_cmd ("breakpoints", class_breakpoint, NO_FUNCTION, "Making program stop at certain points.", &cmdlist);
3842 add_cmd ("data", class_vars, NO_FUNCTION, "Examining data.", &cmdlist);
3843 add_cmd ("stack", class_stack, NO_FUNCTION, "Examining the stack.\n\
3844 The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\
3845 counting from zero for the innermost (currently executing) frame.\n\n\
3846 At any time gdb identifies one frame as the \"selected\" frame.\n\
3847 Variable lookups are done with respect to the selected frame.\n\
3848 When the program being debugged stops, gdb selects the innermost frame.\n\
3849 The commands below can be used to select other frames by number or address.",
3851 add_cmd ("running", class_run, NO_FUNCTION, "Running the program.", &cmdlist);
3853 add_com ("pwd", class_files, pwd_command,
3854 "Print working directory. This is used for your program as well.");
3855 c = add_cmd ("cd", class_files, cd_command,
3856 "Set working directory to DIR for debugger and program being debugged.\n\
3857 The change does not take effect for the program being debugged\n\
3858 until the next time it is started.", &cmdlist);
3859 c->completer = filename_completer;
3861 /* The set prompt command is different depending whether or not the
3862 async version is run. NOTE: this difference is going to
3863 disappear as we make the event loop be the default engine of
3868 (add_set_cmd ("prompt", class_support, var_string,
3869 (char *) &gdb_prompt_string, "Set gdb's prompt",
3875 c = add_set_cmd ("prompt", class_support, var_string,
3876 (char *) &new_async_prompt, "Set gdb's prompt",
3878 add_show_from_set (c, &showlist);
3879 c->function.sfunc = set_async_prompt;
3883 (add_set_cmd ("prompt-escape-char", class_support, var_zinteger,
3884 (char *) &gdb_prompt_escape,
3885 "Set escape character for formatting of gdb's prompt",
3889 add_com ("echo", class_support, echo_command,
3890 "Print a constant string. Give string as argument.\n\
3891 C escape sequences may be used in the argument.\n\
3892 No newline is added at the end of the argument;\n\
3893 use \"\\n\" if you want a newline to be printed.\n\
3894 Since leading and trailing whitespace are ignored in command arguments,\n\
3895 if you want to print some you must use \"\\\" before leading whitespace\n\
3896 to be printed or after trailing whitespace.");
3897 add_com ("document", class_support, document_command,
3898 "Document a user-defined command.\n\
3899 Give command name as argument. Give documentation on following lines.\n\
3900 End with a line of just \"end\".");
3901 add_com ("define", class_support, define_command,
3902 "Define a new command name. Command name is argument.\n\
3903 Definition appears on following lines, one command per line.\n\
3904 End with a line of just \"end\".\n\
3905 Use the \"document\" command to give documentation for the new command.\n\
3906 Commands defined in this way may have up to ten arguments.");
3909 c = add_cmd ("source", class_support, source_command,
3910 "Read commands from a file named FILE.\n\
3911 Note that the file \"" GDBINIT_FILENAME "\" is read automatically in this way\n\
3912 when gdb is started.", &cmdlist);
3914 /* Punt file name, we can't help it easily. */
3915 c = add_cmd ("source", class_support, source_command,
3916 "Read commands from a file named FILE.\n\
3917 Note that the file \".gdbinit\" is read automatically in this way\n\
3918 when gdb is started.", &cmdlist);
3920 c->completer = filename_completer;
3922 add_com ("quit", class_support, quit_command, "Exit gdb.");
3923 add_com ("help", class_support, help_command, "Print list of commands.");
3924 add_com_alias ("q", "quit", class_support, 1);
3925 add_com_alias ("h", "help", class_support, 1);
3927 add_com ("dont-repeat", class_support, dont_repeat_command, "Don't repeat this command.\n\
3928 Primarily used inside of user-defined commands that should not be repeated when\n\
3931 c = add_set_cmd ("verbose", class_support, var_boolean, (char *) &info_verbose,
3934 add_show_from_set (c, &showlist);
3935 c->function.sfunc = set_verbose;
3936 set_verbose (NULL, 0, c);
3938 /* The set editing command is different depending whether or not the
3939 async version is run. NOTE: this difference is going to disappear
3940 as we make the event loop be the default engine of gdb. */
3944 (add_set_cmd ("editing", class_support, var_boolean, (char *) &command_editing_p,
3945 "Set editing of command lines as they are typed.\n\
3946 Use \"on\" to enable the editing, and \"off\" to disable it.\n\
3947 Without an argument, command line editing is enabled. To edit, use\n\
3948 EMACS-like or VI-like commands like control-P or ESC.", &setlist),
3953 c = add_set_cmd ("editing", class_support, var_boolean, (char *) &async_command_editing_p,
3954 "Set editing of command lines as they are typed.\n\
3955 Use \"on\" to enable the editing, and \"off\" to disable it.\n\
3956 Without an argument, command line editing is enabled. To edit, use\n\
3957 EMACS-like or VI-like commands like control-P or ESC.", &setlist);
3959 add_show_from_set (c, &showlist);
3960 c->function.sfunc = set_async_editing_command;
3963 add_prefix_cmd ("history", class_support, set_history,
3964 "Generic command for setting command history parameters.",
3965 &sethistlist, "set history ", 0, &setlist);
3966 add_prefix_cmd ("history", class_support, show_history,
3967 "Generic command for showing command history parameters.",
3968 &showhistlist, "show history ", 0, &showlist);
3971 (add_set_cmd ("expansion", no_class, var_boolean, (char *) &history_expansion_p,
3972 "Set history expansion on command input.\n\
3973 Without an argument, history expansion is enabled.", &sethistlist),
3977 (add_set_cmd ("save", no_class, var_boolean, (char *) &write_history_p,
3978 "Set saving of the history record on exit.\n\
3979 Use \"on\" to enable the saving, and \"off\" to disable it.\n\
3980 Without an argument, saving is enabled.", &sethistlist),
3983 c = add_set_cmd ("size", no_class, var_integer, (char *) &history_size,
3984 "Set the size of the command history, \n\
3985 ie. the number of previous commands to keep a record of.", &sethistlist);
3986 add_show_from_set (c, &showhistlist);
3987 c->function.sfunc = set_history_size_command;
3990 (add_set_cmd ("filename", no_class, var_filename, (char *) &history_filename,
3991 "Set the filename in which to record the command history\n\
3992 (the list of previous commands of which a record is kept).", &sethistlist),
3996 (add_set_cmd ("confirm", class_support, var_boolean,
3998 "Set whether to confirm potentially dangerous operations.",
4002 add_prefix_cmd ("info", class_info, info_command,
4003 "Generic command for showing things about the program being debugged.",
4004 &infolist, "info ", 0, &cmdlist);
4005 add_com_alias ("i", "info", class_info, 1);
4007 add_com ("complete", class_obscure, complete_command,
4008 "List the completions for the rest of the line as a command.");
4010 add_prefix_cmd ("show", class_info, show_command,
4011 "Generic command for showing things about the debugger.",
4012 &showlist, "show ", 0, &cmdlist);
4013 /* Another way to get at the same thing. */
4014 add_info ("set", show_command, "Show all GDB settings.");
4016 add_cmd ("commands", no_class, show_commands,
4017 "Show the history of commands you typed.\n\
4018 You can supply a command number to start with, or a `+' to start after\n\
4019 the previous command number shown.",
4022 add_cmd ("version", no_class, show_version,
4023 "Show what version of GDB this is.", &showlist);
4025 add_com ("while", class_support, while_command,
4026 "Execute nested commands WHILE the conditional expression is non zero.\n\
4027 The conditional expression must follow the word `while' and must in turn be\n\
4028 followed by a new line. The nested commands must be entered one per line,\n\
4029 and should be terminated by the word `end'.");
4031 add_com ("if", class_support, if_command,
4032 "Execute nested commands once IF the conditional expression is non zero.\n\
4033 The conditional expression must follow the word `if' and must in turn be\n\
4034 followed by a new line. The nested commands must be entered one per line,\n\
4035 and should be terminated by the word 'else' or `end'. If an else clause\n\
4036 is used, the same rules apply to its nested commands as to the first ones.");
4038 /* If target is open when baud changes, it doesn't take effect until the
4039 next open (I think, not sure). */
4040 add_show_from_set (add_set_cmd ("remotebaud", no_class,
4041 var_zinteger, (char *) &baud_rate,
4042 "Set baud rate for remote serial I/O.\n\
4043 This value is used to set the speed of the serial port when debugging\n\
4044 using remote targets.", &setlist),
4048 add_set_cmd ("remotedebug", no_class, var_zinteger, (char *) &remote_debug,
4049 "Set debugging of remote protocol.\n\
4050 When enabled, each packet sent or received with the remote target\n\
4051 is displayed.", &setlist),
4055 add_set_cmd ("remotetimeout", no_class, var_integer, (char *) &remote_timeout,
4056 "Set timeout limit to wait for target to respond.\n\
4057 This value is used to set the time limit for gdb to wait for a response\n\
4058 from the target.", &setlist),
4061 /* The set annotate command is different depending whether or not
4062 the async version is run. NOTE: this difference is going to
4063 disappear as we make the event loop be the default engine of
4067 c = add_set_cmd ("annotate", class_obscure, var_zinteger,
4068 (char *) &annotation_level, "Set annotation_level.\n\
4069 0 == normal; 1 == fullname (for use when running under emacs)\n\
4070 2 == output annotated suitably for use by programs that control GDB.",
4072 c = add_show_from_set (c, &showlist);
4076 c = add_set_cmd ("annotate", class_obscure, var_zinteger,
4077 (char *) &annotation_level, "Set annotation_level.\n\
4078 0 == normal; 1 == fullname (for use when running under emacs)\n\
4079 2 == output annotated suitably for use by programs that control GDB.",
4081 add_show_from_set (c, &showlist);
4082 c->function.sfunc = set_async_annotation_level;
4087 (add_set_cmd ("exec-done-display", class_support, var_boolean, (char *) &exec_done_display_p,
4088 "Set notification of completion for asynchronous execution commands.\n\
4089 Use \"on\" to enable the notification, and \"off\" to disable it.", &setlist),