old-cross-binutils/gdb/command.h

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/* Header file for command-reading library command.c.
Copyright 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1999,
2000, 2002 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
1999-07-07 20:19:36 +00:00
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
1999-07-07 20:19:36 +00:00
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#if !defined (COMMAND_H)
#define COMMAND_H 1
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/* Command classes are top-level categories into which commands are broken
down for "help" purposes.
Notes on classes: class_alias is for alias commands which are not
abbreviations of the original command. class-pseudo is for
commands which are not really commands nor help topics ("stop"). */
enum command_class
{
/* Special args to help_list */
class_deprecated, all_classes = -2, all_commands = -1,
/* Classes of commands */
no_class = -1, class_run = 0, class_vars, class_stack,
class_files, class_support, class_info, class_breakpoint, class_trace,
class_alias, class_obscure, class_user, class_maintenance,
class_pseudo, class_tui, class_xdb
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};
/* FIXME: cagney/2002-03-17: Once cmd_type() has been removed, ``enum
cmd_types'' can be moved from "command.h" to "cli-decode.h". */
/* Not a set/show command. Note that some commands which begin with
"set" or "show" might be in this category, if their syntax does
not fall into one of the following categories. */
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typedef enum cmd_types
{
not_set_cmd,
set_cmd,
show_cmd
}
cmd_types;
/* Types of "set" or "show" command. */
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typedef enum var_types
{
/* "on" or "off". *VAR is an integer which is nonzero for on,
zero for off. */
var_boolean,
/* "on" / "true" / "enable" or "off" / "false" / "disable" or
"auto. *VAR is an ``enum auto_boolean''. NOTE: In general a
custom show command will need to be implemented - one that for
"auto" prints both the "auto" and the current auto-selected
value. */
var_auto_boolean,
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/* Unsigned Integer. *VAR is an unsigned int. The user can type 0
to mean "unlimited", which is stored in *VAR as UINT_MAX. */
var_uinteger,
/* Like var_uinteger but signed. *VAR is an int. The user can type 0
to mean "unlimited", which is stored in *VAR as INT_MAX. */
var_integer,
/* String which the user enters with escapes (e.g. the user types \n and
it is a real newline in the stored string).
*VAR is a malloc'd string, or NULL if the string is empty. */
var_string,
/* String which stores what the user types verbatim.
*VAR is a malloc'd string, or NULL if the string is empty. */
var_string_noescape,
/* String which stores a filename.
*VAR is a malloc'd string, or NULL if the string is empty. */
var_filename,
/* ZeroableInteger. *VAR is an int. Like Unsigned Integer except
that zero really means zero. */
var_zinteger,
/* Enumerated type. Can only have one of the specified values. *VAR is a
char pointer to the name of the element that we find. */
var_enum
}
var_types;
/* This structure records one command'd definition. */
struct cmd_list_element;
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/* Forward-declarations of the entry-points of cli/cli-decode.c. */
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extern struct cmd_list_element *add_cmd (char *, enum command_class,
void (*fun) (char *, int), char *,
struct cmd_list_element **);
extern struct cmd_list_element *add_alias_cmd (char *, char *,
enum command_class, int,
struct cmd_list_element **);
extern struct cmd_list_element *add_prefix_cmd (char *, enum command_class,
void (*fun) (char *, int),
char *,
struct cmd_list_element **,
char *, int,
struct cmd_list_element **);
extern struct cmd_list_element *add_abbrev_prefix_cmd (char *,
enum command_class,
void (*fun) (char *,
int),
char *,
struct cmd_list_element
**, char *, int,
struct cmd_list_element
**);
* cli/cli-decode.c (do_cfunc, set_cmd_cfunc): New functions. (do_sfunc, set_cmd_sfunc): New functions. * command.h (struct cmd_list_element): Add field func. * cli/cli-decode.h (struct cmd_list_element): Ditto. * command.h (set_cmd_sfunc, set_cmd_cfunc): Declare. * cli/cli-decode.h: Ditto. * cli/cli-decode.c (help_cmd): Test for func not cfunc/sfunc. (help_all, help_cmd_list): Ditto. (find_cmd, complete_on_cmdlist): Ditto. * top.c (execute_command): Ditto. * cli/cli-setshow.c (do_setshow_command): Call func instead of function.sfunc. * infcmd.c (notice_args_read): Fix function signature. * cli/cli-cmds.c (init_cli_cmds): Use set_cmd_sfunc. * cli/cli-decode.c (add_set_cmd): Ditto. * utils.c (initialize_utils): Ditto. * maint.c (_initialize_maint_cmds): Ditto. * infrun.c (_initialize_infrun): Ditto. * demangle.c (_initialize_demangler): Ditto. * remote.c (add_packet_config_cmd): Ditto. * mips-tdep.c (_initialize_mips_tdep): Ditto. * cris-tdep.c (_initialize_cris_tdep): Ditto. * proc-api.c (_initialize_proc_api): Ditto. * kod.c (_initialize_kod): Ditto. * valprint.c (_initialize_valprint): Ditto. * top.c (init_main): Ditto. * infcmd.c (_initialize_infcmd): Ditto. * corefile.c (_initialize_core): Ditto. * arm-tdep.c (_initialize_arm_tdep): Ditto. * arch-utils.c (initialize_current_architecture): Ditto. (_initialize_gdbarch_utils): Ditto. * alpha-tdep.c (_initialize_alpha_tdep): Ditto. * cli/cli-decode.c (add_cmd): Use set_cmd_cfunc. * wince.c (_initialize_inftarg): Ditto. * symfile.c (_initialize_symfile): Ditto. * mips-tdep.c (_initialize_mips_tdep): Ditto. * language.c (_initialize_language): Ditto. * arc-tdep.c (_initialize_arc_tdep): Ditto.
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/* Set the commands corresponding callback. */
typedef void cmd_cfunc_ftype (char *args, int from_tty);
* cli/cli-decode.c (do_cfunc, set_cmd_cfunc): New functions. (do_sfunc, set_cmd_sfunc): New functions. * command.h (struct cmd_list_element): Add field func. * cli/cli-decode.h (struct cmd_list_element): Ditto. * command.h (set_cmd_sfunc, set_cmd_cfunc): Declare. * cli/cli-decode.h: Ditto. * cli/cli-decode.c (help_cmd): Test for func not cfunc/sfunc. (help_all, help_cmd_list): Ditto. (find_cmd, complete_on_cmdlist): Ditto. * top.c (execute_command): Ditto. * cli/cli-setshow.c (do_setshow_command): Call func instead of function.sfunc. * infcmd.c (notice_args_read): Fix function signature. * cli/cli-cmds.c (init_cli_cmds): Use set_cmd_sfunc. * cli/cli-decode.c (add_set_cmd): Ditto. * utils.c (initialize_utils): Ditto. * maint.c (_initialize_maint_cmds): Ditto. * infrun.c (_initialize_infrun): Ditto. * demangle.c (_initialize_demangler): Ditto. * remote.c (add_packet_config_cmd): Ditto. * mips-tdep.c (_initialize_mips_tdep): Ditto. * cris-tdep.c (_initialize_cris_tdep): Ditto. * proc-api.c (_initialize_proc_api): Ditto. * kod.c (_initialize_kod): Ditto. * valprint.c (_initialize_valprint): Ditto. * top.c (init_main): Ditto. * infcmd.c (_initialize_infcmd): Ditto. * corefile.c (_initialize_core): Ditto. * arm-tdep.c (_initialize_arm_tdep): Ditto. * arch-utils.c (initialize_current_architecture): Ditto. (_initialize_gdbarch_utils): Ditto. * alpha-tdep.c (_initialize_alpha_tdep): Ditto. * cli/cli-decode.c (add_cmd): Use set_cmd_cfunc. * wince.c (_initialize_inftarg): Ditto. * symfile.c (_initialize_symfile): Ditto. * mips-tdep.c (_initialize_mips_tdep): Ditto. * language.c (_initialize_language): Ditto. * arc-tdep.c (_initialize_arc_tdep): Ditto.
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extern void set_cmd_cfunc (struct cmd_list_element *cmd,
cmd_cfunc_ftype *cfunc);
* cli/cli-decode.c (do_cfunc, set_cmd_cfunc): New functions. (do_sfunc, set_cmd_sfunc): New functions. * command.h (struct cmd_list_element): Add field func. * cli/cli-decode.h (struct cmd_list_element): Ditto. * command.h (set_cmd_sfunc, set_cmd_cfunc): Declare. * cli/cli-decode.h: Ditto. * cli/cli-decode.c (help_cmd): Test for func not cfunc/sfunc. (help_all, help_cmd_list): Ditto. (find_cmd, complete_on_cmdlist): Ditto. * top.c (execute_command): Ditto. * cli/cli-setshow.c (do_setshow_command): Call func instead of function.sfunc. * infcmd.c (notice_args_read): Fix function signature. * cli/cli-cmds.c (init_cli_cmds): Use set_cmd_sfunc. * cli/cli-decode.c (add_set_cmd): Ditto. * utils.c (initialize_utils): Ditto. * maint.c (_initialize_maint_cmds): Ditto. * infrun.c (_initialize_infrun): Ditto. * demangle.c (_initialize_demangler): Ditto. * remote.c (add_packet_config_cmd): Ditto. * mips-tdep.c (_initialize_mips_tdep): Ditto. * cris-tdep.c (_initialize_cris_tdep): Ditto. * proc-api.c (_initialize_proc_api): Ditto. * kod.c (_initialize_kod): Ditto. * valprint.c (_initialize_valprint): Ditto. * top.c (init_main): Ditto. * infcmd.c (_initialize_infcmd): Ditto. * corefile.c (_initialize_core): Ditto. * arm-tdep.c (_initialize_arm_tdep): Ditto. * arch-utils.c (initialize_current_architecture): Ditto. (_initialize_gdbarch_utils): Ditto. * alpha-tdep.c (_initialize_alpha_tdep): Ditto. * cli/cli-decode.c (add_cmd): Use set_cmd_cfunc. * wince.c (_initialize_inftarg): Ditto. * symfile.c (_initialize_symfile): Ditto. * mips-tdep.c (_initialize_mips_tdep): Ditto. * language.c (_initialize_language): Ditto. * arc-tdep.c (_initialize_arc_tdep): Ditto.
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typedef void cmd_sfunc_ftype (char *args, int from_tty,
struct cmd_list_element *c);
* cli/cli-decode.c (do_cfunc, set_cmd_cfunc): New functions. (do_sfunc, set_cmd_sfunc): New functions. * command.h (struct cmd_list_element): Add field func. * cli/cli-decode.h (struct cmd_list_element): Ditto. * command.h (set_cmd_sfunc, set_cmd_cfunc): Declare. * cli/cli-decode.h: Ditto. * cli/cli-decode.c (help_cmd): Test for func not cfunc/sfunc. (help_all, help_cmd_list): Ditto. (find_cmd, complete_on_cmdlist): Ditto. * top.c (execute_command): Ditto. * cli/cli-setshow.c (do_setshow_command): Call func instead of function.sfunc. * infcmd.c (notice_args_read): Fix function signature. * cli/cli-cmds.c (init_cli_cmds): Use set_cmd_sfunc. * cli/cli-decode.c (add_set_cmd): Ditto. * utils.c (initialize_utils): Ditto. * maint.c (_initialize_maint_cmds): Ditto. * infrun.c (_initialize_infrun): Ditto. * demangle.c (_initialize_demangler): Ditto. * remote.c (add_packet_config_cmd): Ditto. * mips-tdep.c (_initialize_mips_tdep): Ditto. * cris-tdep.c (_initialize_cris_tdep): Ditto. * proc-api.c (_initialize_proc_api): Ditto. * kod.c (_initialize_kod): Ditto. * valprint.c (_initialize_valprint): Ditto. * top.c (init_main): Ditto. * infcmd.c (_initialize_infcmd): Ditto. * corefile.c (_initialize_core): Ditto. * arm-tdep.c (_initialize_arm_tdep): Ditto. * arch-utils.c (initialize_current_architecture): Ditto. (_initialize_gdbarch_utils): Ditto. * alpha-tdep.c (_initialize_alpha_tdep): Ditto. * cli/cli-decode.c (add_cmd): Use set_cmd_cfunc. * wince.c (_initialize_inftarg): Ditto. * symfile.c (_initialize_symfile): Ditto. * mips-tdep.c (_initialize_mips_tdep): Ditto. * language.c (_initialize_language): Ditto. * arc-tdep.c (_initialize_arc_tdep): Ditto.
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extern void set_cmd_sfunc (struct cmd_list_element *cmd,
cmd_sfunc_ftype *sfunc);
* cli/cli-decode.c (do_cfunc, set_cmd_cfunc): New functions. (do_sfunc, set_cmd_sfunc): New functions. * command.h (struct cmd_list_element): Add field func. * cli/cli-decode.h (struct cmd_list_element): Ditto. * command.h (set_cmd_sfunc, set_cmd_cfunc): Declare. * cli/cli-decode.h: Ditto. * cli/cli-decode.c (help_cmd): Test for func not cfunc/sfunc. (help_all, help_cmd_list): Ditto. (find_cmd, complete_on_cmdlist): Ditto. * top.c (execute_command): Ditto. * cli/cli-setshow.c (do_setshow_command): Call func instead of function.sfunc. * infcmd.c (notice_args_read): Fix function signature. * cli/cli-cmds.c (init_cli_cmds): Use set_cmd_sfunc. * cli/cli-decode.c (add_set_cmd): Ditto. * utils.c (initialize_utils): Ditto. * maint.c (_initialize_maint_cmds): Ditto. * infrun.c (_initialize_infrun): Ditto. * demangle.c (_initialize_demangler): Ditto. * remote.c (add_packet_config_cmd): Ditto. * mips-tdep.c (_initialize_mips_tdep): Ditto. * cris-tdep.c (_initialize_cris_tdep): Ditto. * proc-api.c (_initialize_proc_api): Ditto. * kod.c (_initialize_kod): Ditto. * valprint.c (_initialize_valprint): Ditto. * top.c (init_main): Ditto. * infcmd.c (_initialize_infcmd): Ditto. * corefile.c (_initialize_core): Ditto. * arm-tdep.c (_initialize_arm_tdep): Ditto. * arch-utils.c (initialize_current_architecture): Ditto. (_initialize_gdbarch_utils): Ditto. * alpha-tdep.c (_initialize_alpha_tdep): Ditto. * cli/cli-decode.c (add_cmd): Use set_cmd_cfunc. * wince.c (_initialize_inftarg): Ditto. * symfile.c (_initialize_symfile): Ditto. * mips-tdep.c (_initialize_mips_tdep): Ditto. * language.c (_initialize_language): Ditto. * arc-tdep.c (_initialize_arc_tdep): Ditto.
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extern void set_cmd_completer (struct cmd_list_element *cmd,
char **(*completer) (char *text, char *word));
/* HACK: cagney/2002-02-23: Code, mostly in tracepoints.c, grubs
around in cmd objects to test the value of the commands sfunc(). */
extern int cmd_cfunc_eq (struct cmd_list_element *cmd,
void (*cfunc) (char *args, int from_tty));
* cli/cli-decode.c (do_cfunc, set_cmd_cfunc): New functions. (do_sfunc, set_cmd_sfunc): New functions. * command.h (struct cmd_list_element): Add field func. * cli/cli-decode.h (struct cmd_list_element): Ditto. * command.h (set_cmd_sfunc, set_cmd_cfunc): Declare. * cli/cli-decode.h: Ditto. * cli/cli-decode.c (help_cmd): Test for func not cfunc/sfunc. (help_all, help_cmd_list): Ditto. (find_cmd, complete_on_cmdlist): Ditto. * top.c (execute_command): Ditto. * cli/cli-setshow.c (do_setshow_command): Call func instead of function.sfunc. * infcmd.c (notice_args_read): Fix function signature. * cli/cli-cmds.c (init_cli_cmds): Use set_cmd_sfunc. * cli/cli-decode.c (add_set_cmd): Ditto. * utils.c (initialize_utils): Ditto. * maint.c (_initialize_maint_cmds): Ditto. * infrun.c (_initialize_infrun): Ditto. * demangle.c (_initialize_demangler): Ditto. * remote.c (add_packet_config_cmd): Ditto. * mips-tdep.c (_initialize_mips_tdep): Ditto. * cris-tdep.c (_initialize_cris_tdep): Ditto. * proc-api.c (_initialize_proc_api): Ditto. * kod.c (_initialize_kod): Ditto. * valprint.c (_initialize_valprint): Ditto. * top.c (init_main): Ditto. * infcmd.c (_initialize_infcmd): Ditto. * corefile.c (_initialize_core): Ditto. * arm-tdep.c (_initialize_arm_tdep): Ditto. * arch-utils.c (initialize_current_architecture): Ditto. (_initialize_gdbarch_utils): Ditto. * alpha-tdep.c (_initialize_alpha_tdep): Ditto. * cli/cli-decode.c (add_cmd): Use set_cmd_cfunc. * wince.c (_initialize_inftarg): Ditto. * symfile.c (_initialize_symfile): Ditto. * mips-tdep.c (_initialize_mips_tdep): Ditto. * language.c (_initialize_language): Ditto. * arc-tdep.c (_initialize_arc_tdep): Ditto.
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/* Each command object has a local context attached to it. . */
extern void set_cmd_context (struct cmd_list_element *cmd, void *context);
extern void *get_cmd_context (struct cmd_list_element *cmd);
/* Execute CMD's pre/post hook. Throw an error if the command fails.
If already executing this pre/post hook, or there is no pre/post
hook, the call is silently ignored. */
extern void execute_cmd_pre_hook (struct cmd_list_element *cmd);
extern void execute_cmd_post_hook (struct cmd_list_element *cmd);
/* Return the type of the command. */
/* NOTE: cagney/2002-03-17: The add_show_from_set() function clones
the set command passed as a parameter. The clone operation will
include (BUG?) any ``set'' command callback, if present. Commands
like ``info set'' call all the ``show'' command callbacks.
Unfortunately, for ``show'' commands cloned from ``set'', this
includes callbacks belonging to ``set'' commands. Making this
worse, this only occures if add_show_from_set() is called after
add_cmd_sfunc() (BUG?). */
extern enum cmd_types cmd_type (struct cmd_list_element *cmd);
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extern struct cmd_list_element *lookup_cmd (char **,
struct cmd_list_element *, char *,
int, int);
extern struct cmd_list_element *lookup_cmd_1 (char **,
struct cmd_list_element *,
struct cmd_list_element **,
int);
extern struct cmd_list_element *
deprecate_cmd (struct cmd_list_element *, char * );
extern void
deprecated_cmd_warning (char **);
extern int
lookup_cmd_composition (char *text,
struct cmd_list_element **alias,
struct cmd_list_element **prefix_cmd,
struct cmd_list_element **cmd);
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extern struct cmd_list_element *add_com (char *, enum command_class,
void (*fun) (char *, int), char *);
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extern struct cmd_list_element *add_com_alias (char *, char *,
enum command_class, int);
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extern struct cmd_list_element *add_info (char *, void (*fun) (char *, int),
char *);
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extern struct cmd_list_element *add_info_alias (char *, char *, int);
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extern char **complete_on_cmdlist (struct cmd_list_element *, char *, char *);
extern char **complete_on_enum (const char *enumlist[], char *, char *);
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extern void delete_cmd (char *, struct cmd_list_element **);
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extern void help_cmd (char *, struct ui_file *);
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extern void help_list (struct cmd_list_element *, char *,
enum command_class, struct ui_file *);
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extern void help_cmd_list (struct cmd_list_element *, enum command_class,
char *, int, struct ui_file *);
extern void add_setshow_cmd (char *name,
enum command_class class,
var_types var_type, void *var,
char *set_doc, char *show_doc,
cmd_sfunc_ftype *set_func,
cmd_sfunc_ftype *show_func,
struct cmd_list_element **set_list,
struct cmd_list_element **show_list);
extern void add_setshow_cmd_full (char *name,
enum command_class class,
var_types var_type, void *var,
char *set_doc, char *show_doc,
cmd_sfunc_ftype *set_func,
cmd_sfunc_ftype *show_func,
struct cmd_list_element **set_list,
struct cmd_list_element **show_list,
struct cmd_list_element **set_result,
struct cmd_list_element **show_result);
extern struct cmd_list_element *add_set_cmd (char *name, enum
command_class class,
var_types var_type, void *var,
char *doc,
struct cmd_list_element **list);
extern struct cmd_list_element *add_set_enum_cmd (char *name,
enum command_class class,
const char *enumlist[],
const char **var,
char *doc,
struct cmd_list_element **list);
extern void add_setshow_auto_boolean_cmd (char *name,
enum command_class class,
enum auto_boolean *var,
char *set_doc, char *show_doc,
cmd_sfunc_ftype *set_func,
cmd_sfunc_ftype *show_func,
struct cmd_list_element **set_list,
struct cmd_list_element **show_list);
extern void add_setshow_boolean_cmd (char *name,
enum command_class class,
int *var,
char *set_doc,
char *show_doc,
cmd_sfunc_ftype *set_func,
cmd_sfunc_ftype *show_func,
struct cmd_list_element **set_list,
struct cmd_list_element **show_list);
2003-08-09 Andrew Cagney <cagney@redhat.com> Fix GDB PR cli/926. * cli/cli-decode.c (add_setshow_uinteger_cmd): New function. * command.h (add_setshow_uinteger_cmd): Declare. * frame.c (set_backtrace_cmd): New function. (show_backtrace_cmd): New function. * frame.c (_initialize_frame): Replace "set/show backtrace-below-main" with "set/show backtrace past-main". Add command "set/show backtrace limit". (backtrace_past_main): Rename "backtrace_below_main". (backtrace_limit): New variable. (get_prev_frame): Update. Check the backtrace_limit. 2003-08-09 Andrew Cagney <cagney@redhat.com> * gdb.texinfo (Backtrace): Replace "set/show backtrace-below-main" with "set/show backtrace past-main" and "set/show backtrace limit". Index: doc/gdb.texinfo =================================================================== RCS file: /cvs/src/src/gdb/doc/gdb.texinfo,v retrieving revision 1.174 diff -u -r1.174 gdb.texinfo --- doc/gdb.texinfo 8 Aug 2003 01:58:00 -0000 1.174 +++ doc/gdb.texinfo 9 Aug 2003 14:57:10 -0000 @@ -3922,27 +3922,40 @@ value, indicating that your program has stopped at the beginning of the code for line @code{993} of @code{builtin.c}. -@kindex set backtrace-below-main -@kindex show backtrace-below-main +@kindex set backtrace past-main +@kindex show backtrace past-main +@kindex set backtrace limit +@kindex show backtrace limit -Most programs have a standard entry point---a place where system libraries -and startup code transition into user code. For C this is @code{main}. -When @value{GDBN} finds the entry function in a backtrace it will terminate -the backtrace, to avoid tracing into highly system-specific (and generally -uninteresting) code. If you need to examine the startup code, then you can -change this behavior. +Most programs have a standard user entry point---a place where system +libraries and startup code transition into user code. For C this is +@code{main}. When @value{GDBN} finds the entry function in a backtrace +it will terminate the backtrace, to avoid tracing into highly +system-specific (and generally uninteresting) code. + +If you need to examine the startup code, or limit the number of levels +in a backtrace, you can change this behavior: @table @code -@item set backtrace-below-main off +@item set backtrace past-main +@itemx set backtrace past-main on +Backtraces will continue past the user entry point. + +@item set backtrace past-main off Backtraces will stop when they encounter the user entry point. This is the default. -@item set backtrace-below-main -@itemx set backtrace-below-main on -Backtraces will continue past the user entry point to the top of the stack. +@item show backtrace past-main +Display the current user entry point backtrace policy. + +@item set backtrace limit @var{n} +@itemx set backtrace limit 0 +@cindex backtrace limit +Limit the backtrace to @var{n} levels. A value of zero means +unlimited. -@item show backtrace-below-main -Display the current backtrace policy. +@item show backtrace limit +Display the current limit on backtrace levels. @end table @node Selection
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extern void add_setshow_uinteger_cmd (char *name,
enum command_class class,
unsigned int *var,
char *set_doc,
char *show_doc,
cmd_sfunc_ftype *set_func,
cmd_sfunc_ftype *show_func,
struct cmd_list_element **set_list,
struct cmd_list_element **show_list);
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extern struct cmd_list_element *add_show_from_set (struct cmd_list_element *,
struct cmd_list_element
**);
/* Do a "show" command for each thing on a command list. */
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extern void cmd_show_list (struct cmd_list_element *, int, char *);
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extern NORETURN void error_no_arg (char *) ATTR_NORETURN;
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extern void dont_repeat (void);
/* Used to mark commands that don't do anything. If we just leave the
function field NULL, the command is interpreted as a help topic, or
as a class of commands. */
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extern void not_just_help_class_command (char *, int);
/* check function pointer */
extern int cmd_func_p (struct cmd_list_element *cmd);
/* call the command function */
extern void cmd_func (struct cmd_list_element *cmd, char *args, int from_tty);
#endif /* !defined (COMMAND_H) */