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[rfa:cli/rfc] Use cmd->func instead of cmd->cfunc/sfunc


Hello,

The attatched patch is the first shaky step towards changing the 
signature of the CLI callback function.  I'm looking to add things like 
a context parameter and (possibly) replace is-tty with a ui-file 
parameter.  The ultimate objective here is to fix gdb/145.

Up until now the cli has used ->function.cfunc() and ->function.sfunc() 
both members of the same union.  This patch pushes these interfaces down 
a level and introduces ->func.

The routines set_cmd_cfunc() and set_cmd_sfunc() handle the problem of 
compatibility by installing versions of ->func that call the 
corresponding old function.

Going through the code, I've also managed to purge most, but not all, 
references to ->function.[cs]func..  Have a look at tracepoint.c for the 
problem ones - that looks to need a serious thinko :-(

Ok?  ``I've found no regressions.''

enjoy,
Andrew
2002-02-02  Andrew Cagney  <ac131313@redhat.com>

	* cli/cli-decode.c (help_cmd): Test for func not cfunc/sfunc.
	(help_all, help_cmd_list): Ditto.
	(find_cmd, complete_on_cmdlist): Ditto.

	* cli/cli-setshow.c (do_setshow_command): Call func instead of
	function.sfunc.

	* top.c (execute_command): Test func instead of function.cfunc or
	function.sfunc.

	* infcmd.c (notice_args_read): Fix function signature.

	* 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-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.

Index: alpha-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/alpha-tdep.c,v
retrieving revision 1.18
diff -u -r1.18 alpha-tdep.c
--- alpha-tdep.c	2002/01/20 01:33:15	1.18
+++ alpha-tdep.c	2002/02/03 01:19:59
@@ -1686,6 +1686,6 @@
 		   &setlist);
   /* We need to throw away the frame cache when we set this, since it
      might change our ability to get backtraces.  */
-  c->function.sfunc = reinit_frame_cache_sfunc;
+  set_cmd_sfunc (c, reinit_frame_cache_sfunc);
   add_show_from_set (c, &showlist);
 }
Index: arc-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/arc-tdep.c,v
retrieving revision 1.7
diff -u -r1.7 arc-tdep.c
--- arc-tdep.c	2001/03/06 08:21:05	1.7
+++ arc-tdep.c	2002/02/03 01:20:00
@@ -692,9 +692,9 @@
 cpu-type-specific registers and recognize cpu-type-specific instructions.\
 ",
 		   &setlist);
-  c->function.cfunc = arc_set_cpu_type_command;
+  set_cmd_cfunc (c, arc_set_cpu_type_command);
   c = add_show_from_set (c, &showlist);
-  c->function.cfunc = arc_show_cpu_type_command;
+  set_cmd_cfunc (c, arc_show_cpu_type_command);
 
   /* We have to use xstrdup() here because the `set' command frees it
      before setting a new value.  */
Index: arch-utils.c
===================================================================
RCS file: /cvs/src/src/gdb/arch-utils.c,v
retrieving revision 1.48
diff -u -r1.48 arch-utils.c
--- arch-utils.c	2002/01/29 03:51:14	1.48
+++ arch-utils.c	2002/02/03 01:20:03
@@ -793,7 +793,7 @@
 			  arches, &set_architecture_string,
 			  "Set architecture of target.",
 			  &setlist);
-    c->function.sfunc = set_architecture;
+    set_cmd_sfunc (c, set_architecture);
     add_alias_cmd ("processor", "architecture", class_support, 1, &setlist);
     /* Don't use set_from_show - need to print both auto/manual and
        current setting. */
@@ -828,7 +828,7 @@
 			endian_enum, &set_endian_string,
 			"Set endianness of target.",
 			&setlist);
-  c->function.sfunc = set_endian;
+  set_cmd_sfunc (c, set_endian);
   /* Don't use set_from_show - need to print both auto/manual and
      current setting. */
   add_cmd ("endian", class_support, show_endian,
Index: arm-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/arm-tdep.c,v
retrieving revision 1.31
diff -u -r1.31 arm-tdep.c
--- arm-tdep.c	2002/02/01 13:39:41	1.31
+++ arm-tdep.c	2002/02/03 01:20:09
@@ -2330,7 +2330,7 @@
 			      &disassembly_flavor,
 			      helptext,
 			      &setlist);
-  new_cmd->function.sfunc = set_disassembly_flavor_sfunc;
+  set_cmd_sfunc (new_cmd, set_disassembly_flavor_sfunc);
   add_show_from_set (new_cmd, &showlist);
 
   /* ??? Maybe this should be a boolean.  */
Index: command.h
===================================================================
RCS file: /cvs/src/src/gdb/command.h,v
retrieving revision 1.21
diff -u -r1.21 command.h
--- command.h	2002/02/02 00:56:34	1.21
+++ command.h	2002/02/03 01:20:10
@@ -127,7 +127,13 @@
     enum command_class class;
 
     /* Function definition of this command.  NULL for command class
-       names and for help topics that are not really commands.  */
+       names and for help topics that are not really commands.  NOTE:
+       cagney/2002-02-02: This function signature is evolving.  For
+       the moment suggest sticking with either set_cmd_cfunc() or
+       set_cmd_sfunc().  */
+    void (*func) (struct cmd_list_element *c, char *args, int from_tty);
+    /* The command's real callback.  At present func() bounces through
+       to one of the below.  */
     union
       {
 	/* If type is not_set_cmd, call it like this:  */
@@ -276,6 +282,16 @@
 						       **, char *, int,
 						       struct cmd_list_element
 						       **);
+
+/* Set the commands corresponding callback.  */
+
+extern void set_cmd_cfunc (struct cmd_list_element *cmd,
+			   void (*cfunc) (char *args, int from_tty));
+
+extern void set_cmd_sfunc (struct cmd_list_element *cmd,
+			   void (*sfunc) (char *args, int from_tty,
+					  struct cmd_list_element * c));
+
 
 extern struct cmd_list_element *lookup_cmd (char **,
 					    struct cmd_list_element *, char *,
Index: corefile.c
===================================================================
RCS file: /cvs/src/src/gdb/corefile.c,v
retrieving revision 1.16
diff -u -r1.16 corefile.c
--- corefile.c	2001/12/19 23:54:26	1.16
+++ corefile.c	2002/02/03 01:20:12
@@ -448,7 +448,7 @@
 		   "Set the current BFD target.\n\
 Use `set gnutarget auto' to specify automatic detection.",
 		   &setlist);
-  c->function.sfunc = set_gnutarget_command;
+  set_cmd_sfunc (c, set_gnutarget_command);
   add_show_from_set (c, &showlist);
 
   if (getenv ("GNUTARGET"))
Index: cris-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/cris-tdep.c,v
retrieving revision 1.11
diff -u -r1.11 cris-tdep.c
--- cris-tdep.c	2002/01/20 18:05:51	1.11
+++ cris-tdep.c	2002/02/03 01:20:20
@@ -3875,19 +3875,19 @@
   c = add_set_cmd ("cris-version", class_support, var_integer, 
                    (char *) &usr_cmd_cris_version, 
                    "Set the current CRIS version.", &setlist);
-  c->function.sfunc = cris_version_update;
+  set_cmd_sfunc (c, cris_version_update);
   add_show_from_set (c, &showlist);
   
   c = add_set_enum_cmd ("cris-mode", class_support, cris_mode_enums, 
                         &usr_cmd_cris_mode, 
                         "Set the current CRIS mode.", &setlist);
-  c->function.sfunc = cris_mode_update;
+  set_cmd_sfunc (c, cris_mode_update);
   add_show_from_set (c, &showlist);
 
   c = add_set_enum_cmd ("cris-abi", class_support, cris_abi_enums, 
                         &usr_cmd_cris_abi, 
                         "Set the current CRIS ABI version.", &setlist);
-  c->function.sfunc = cris_abi_update;
+  set_cmd_sfunc (c, cris_abi_update);
   add_show_from_set (c, &showlist);
 
   c = add_cmd ("cris-fpless-backtrace", class_support, cris_fpless_backtrace, 
Index: demangle.c
===================================================================
RCS file: /cvs/src/src/gdb/demangle.c,v
retrieving revision 1.8
diff -u -r1.8 demangle.c
--- demangle.c	2001/04/16 14:36:16	1.8
+++ demangle.c	2002/02/03 01:20:20
@@ -200,7 +200,7 @@
 Use `set demangle-style' without arguments for a list of demangling styles.",
 			  &setlist);
   show = add_show_from_set (set, &showlist);
-  set->function.sfunc = set_demangling_command;
+  set_cmd_sfunc (set, set_demangling_command);
 
   /* Set the default demangling style chosen at compilation time. */
   set_demangling_style (DEFAULT_DEMANGLING_STYLE);
Index: infcmd.c
===================================================================
RCS file: /cvs/src/src/gdb/infcmd.c,v
retrieving revision 1.39
diff -u -r1.39 infcmd.c
--- infcmd.c	2002/01/29 03:08:25	1.39
+++ infcmd.c	2002/02/03 01:20:26
@@ -248,7 +248,7 @@
 
 /* Notice when `show args' is run.  */
 static void
-notice_args_read (struct cmd_list_element *c)
+notice_args_read (char *args, int from_tty, struct cmd_list_element *c)
 {
   /* Might compute the value.  */
   get_inferior_args ();
@@ -1877,9 +1877,9 @@
 Follow this command with any number of args, to be passed to the program.",
 		   &setlist);
   c->completer = filename_completer;
-  c->function.sfunc = notice_args_set;
+  set_cmd_sfunc (c, notice_args_set);
   c = add_show_from_set (c, &showlist);
-  c->pre_show_hook = notice_args_read;
+  set_cmd_sfunc (c, notice_args_read);
 
   c = add_cmd
     ("environment", no_class, environment_info,
Index: infrun.c
===================================================================
RCS file: /cvs/src/src/gdb/infrun.c,v
retrieving revision 1.51
diff -u -r1.51 infrun.c
--- infrun.c	2002/02/02 03:42:58	1.51
+++ infrun.c	2002/02/03 01:20:38
@@ -4350,7 +4350,6 @@
 For \"parent\" or \"child\", the unfollowed process will run free.\n\
 By default, the debugger will follow the parent process.",
 			&setlist);
-/*  c->function.sfunc = ; */
   add_show_from_set (c, &showlist);
 
   c = add_set_enum_cmd ("scheduler-locking", class_run,
@@ -4364,7 +4363,7 @@
 	Other threads may run while stepping over a function call ('next').",
 			&setlist);
 
-  c->function.sfunc = set_schedlock_func;	/* traps on target vector */
+  set_cmd_sfunc (c, set_schedlock_func);	/* traps on target vector */
   add_show_from_set (c, &showlist);
 
   c = add_set_cmd ("step-mode", class_run,
Index: kod.c
===================================================================
RCS file: /cvs/src/src/gdb/kod.c,v
retrieving revision 1.4
diff -u -r1.4 kod.c
--- kod.c	2001/03/06 08:21:09	1.4
+++ kod.c	2002/02/03 01:20:39
@@ -224,6 +224,6 @@
 		   (char *) &operating_system,
 		   "Set operating system",
 		   &setlist);
-  c->function.sfunc = kod_set_os;
+  set_cmd_sfunc (c, kod_set_os);
   add_show_from_set (c, &showlist);
 }
Index: language.c
===================================================================
RCS file: /cvs/src/src/gdb/language.c,v
retrieving revision 1.20
diff -u -r1.20 language.c
--- language.c	2002/02/02 02:28:40	1.20
+++ language.c	2002/02/03 01:20:42
@@ -1555,8 +1555,8 @@
 		     "Set the current source language.",
 		     &setlist);
   show = add_show_from_set (set, &showlist);
-  set->function.cfunc = set_language_command;
-  show->function.cfunc = show_language_command;
+  set_cmd_cfunc (set, set_language_command);
+  set_cmd_cfunc (show, show_language_command);
 
   add_prefix_cmd ("check", no_class, set_check,
 		  "Set the status of the type/range checker",
@@ -1575,16 +1575,16 @@
 		     "Set type checking.  (on/warn/off/auto)",
 		     &setchecklist);
   show = add_show_from_set (set, &showchecklist);
-  set->function.cfunc = set_type_command;
-  show->function.cfunc = show_type_command;
+  set_cmd_cfunc (set, set_type_command);
+  set_cmd_cfunc (show, show_type_command);
 
   set = add_set_cmd ("range", class_support, var_string_noescape,
 		     (char *) &range,
 		     "Set range checking.  (on/warn/off/auto)",
 		     &setchecklist);
   show = add_show_from_set (set, &showchecklist);
-  set->function.cfunc = set_range_command;
-  show->function.cfunc = show_range_command;
+  set_cmd_cfunc (set, set_range_command);
+  set_cmd_cfunc (show, show_range_command);
 
   set = add_set_cmd ("case-sensitive", class_support, var_string_noescape,
                      (char *) &case_sensitive,
@@ -1592,8 +1592,8 @@
 For Fortran the default is off; for other languages the default is on.",
                      &setlist);
   show = add_show_from_set (set, &showlist);
-  set->function.cfunc = set_case_command;
-  show->function.cfunc = show_case_command;
+  set_cmd_cfunc (set, set_case_command);
+  set_cmd_cfunc (show, show_case_command);
 
   add_language (&unknown_language_defn);
   add_language (&local_language_defn);
Index: maint.c
===================================================================
RCS file: /cvs/src/src/gdb/maint.c,v
retrieving revision 1.22
diff -u -r1.22 maint.c
--- maint.c	2002/01/01 15:17:40	1.22
+++ maint.c	2002/02/03 01:20:45
@@ -790,7 +790,7 @@
 			"Set internal profiling.\n\
 When enabled GDB is profiled.",
 			&maintenance_set_cmdlist);
-  tmpcmd->function.sfunc = maintenance_set_profile_cmd;
+  set_cmd_sfunc (tmpcmd, maintenance_set_profile_cmd);
   add_show_from_set (tmpcmd, &maintenance_show_cmdlist);
 #endif
 }
Index: mips-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/mips-tdep.c,v
retrieving revision 1.64
diff -u -r1.64 mips-tdep.c
--- mips-tdep.c	2002/01/20 18:05:51	1.64
+++ mips-tdep.c	2002/02/03 01:20:56
@@ -4786,9 +4786,9 @@
 Set this to be able to access processor-type-specific registers.\n\
 ",
 		   &setlist);
-  c->function.cfunc = mips_set_processor_type_command;
+  set_cmd_cfunc (c, mips_set_processor_type_command);
   c = add_show_from_set (c, &showlist);
-  c->function.cfunc = mips_show_processor_type_command;
+  set_cmd_cfunc (c, mips_show_processor_type_command);
 
   tmp_mips_processor_type = xstrdup (DEFAULT_MIPS_TYPE);
   mips_set_processor_type_command (xstrdup (DEFAULT_MIPS_TYPE), 0);
@@ -4807,7 +4807,7 @@
 		   &setlist);
   /* We need to throw away the frame cache when we set this, since it
      might change our ability to get backtraces.  */
-  c->function.sfunc = reinit_frame_cache_sfunc;
+  set_cmd_sfunc (c, reinit_frame_cache_sfunc);
   add_show_from_set (c, &showlist);
 
   /* Allow the user to control whether the upper bits of 64-bit
Index: proc-api.c
===================================================================
RCS file: /cvs/src/src/gdb/proc-api.c,v
retrieving revision 1.10
diff -u -r1.10 proc-api.c
--- proc-api.c	2001/05/10 21:03:03	1.10
+++ proc-api.c	2002/02/03 01:20:59
@@ -777,7 +777,7 @@
 		   "Set tracing for /proc api calls.\n", &setlist);
 
   add_show_from_set (c, &showlist);
-  c->function.sfunc = set_procfs_trace_cmd;
+  set_cmd_sfunc (c, set_procfs_trace_cmd);
   c->completer = filename_completer;
 
   c = add_set_cmd ("procfs-file", no_class, var_filename,
@@ -785,5 +785,5 @@
 		   "Set filename for /proc tracefile.\n", &setlist);
 
   add_show_from_set (c, &showlist);
-  c->function.sfunc = set_procfs_file_cmd;
+  set_cmd_sfunc (c, set_procfs_file_cmd);
 }
Index: remote.c
===================================================================
RCS file: /cvs/src/src/gdb/remote.c,v
retrieving revision 1.74
diff -u -r1.74 remote.c
--- remote.c	2002/01/19 03:32:40	1.74
+++ remote.c	2002/02/03 01:21:12
@@ -675,7 +675,7 @@
   set_cmd = add_set_auto_boolean_cmd (cmd_name, class_obscure,
 				&config->detect, set_doc,
 				set_remote_list);
-  set_cmd->function.sfunc = set_func;
+  set_cmd_sfunc (set_cmd, set_func);
   show_cmd = add_cmd (cmd_name, class_obscure, show_func, show_doc,
 		      show_remote_list);
   /* set/show remote NAME-packet {auto,on,off} -- legacy */
@@ -6154,7 +6154,7 @@
 				     &remote_Z_packet_detect,
 				     "\
 Set use of remote protocol `Z' packets", &remote_set_cmdlist);
-  tmpcmd->function.sfunc = set_remote_protocol_Z_packet_cmd;
+  set_cmd_sfunc (tmpcmd, set_remote_protocol_Z_packet_cmd);
   add_cmd ("Z-packet", class_obscure, show_remote_protocol_Z_packet_cmd,
 	   "Show use of remote protocol `Z' packets ",
 	   &remote_show_cmdlist);
Index: symfile.c
===================================================================
RCS file: /cvs/src/src/gdb/symfile.c,v
retrieving revision 1.51
diff -u -r1.51 symfile.c
--- symfile.c	2002/02/01 01:14:20	1.51
+++ symfile.c	2002/02/03 01:21:22
@@ -3274,7 +3274,7 @@
 		   "Set mapping between filename extension and source language.\n\
 Usage: set extension-language .foo bar",
 		   &setlist);
-  c->function.cfunc = set_ext_lang_command;
+  set_cmd_cfunc (c, set_ext_lang_command);
 
   add_info ("extensions", info_ext_lang_command,
 	    "All filename extensions associated with a source language.");
Index: top.c
===================================================================
RCS file: /cvs/src/src/gdb/top.c,v
retrieving revision 1.54
diff -u -r1.54 top.c
--- top.c	2002/02/02 00:56:34	1.54
+++ top.c	2002/02/03 01:21:28
@@ -672,7 +672,16 @@
       /* Pass null arg rather than an empty one.  */
       arg = *p ? p : 0;
 
-      /* Clear off trailing whitespace, except for set and complete command.  */
+      /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy
+         while the is_complete_command(cfunc) test is just plain
+         bogus.  They should both be replaced by a test of the form
+         c->strip_trailing_white_space_p.  */
+      /* NOTE: cagney/2002-02-02: The function.cfunc in the below
+         can't be replaced with func.  This is because it is the
+         cfunc, and not the func, that has the value that the
+         is_complete_command hack is testing for.  */
+      /* Clear off trailing whitespace, except for set and complete
+         command.  */
       if (arg
 	  && c->type != set_cmd
 	  && !is_complete_command (c->function.cfunc))
@@ -698,12 +707,12 @@
 	execute_user_command (c, arg);
       else if (c->type == set_cmd || c->type == show_cmd)
 	do_setshow_command (arg, from_tty & caution, c);
-      else if (c->function.cfunc == NULL)
+      else if (c->func == NULL)
 	error ("That is not a command, just a help topic.");
       else if (call_command_hook)
 	call_command_hook (c, arg, from_tty & caution);
       else
-	(*c->function.cfunc) (arg, from_tty & caution);
+	(*c->func) (c, arg, from_tty & caution);
        
       /* If this command has been post-hooked, run the hook last. */
       if ((c->hook_post) && (!c->hook_in))
@@ -1943,7 +1952,7 @@
 		       (char *) &new_async_prompt, "Set gdb's prompt",
 		       &setlist);
       add_show_from_set (c, &showlist);
-      c->function.sfunc = set_async_prompt;
+      set_cmd_sfunc (c, set_async_prompt);
     }
 
   add_show_from_set
@@ -1979,7 +1988,7 @@
 EMACS-like or VI-like commands like control-P or ESC.", &setlist);
 
       add_show_from_set (c, &showlist);
-      c->function.sfunc = set_async_editing_command;
+      set_cmd_sfunc (c, set_async_editing_command);
     }
 
   add_show_from_set
@@ -1993,7 +2002,7 @@
 		   "Set the size of the command history, \n\
 ie. the number of previous commands to keep a record of.", &sethistlist);
   add_show_from_set (c, &showhistlist);
-  c->function.sfunc = set_history_size_command;
+  set_cmd_sfunc (c, set_history_size_command);
 
   c = add_set_cmd ("filename", no_class, var_filename,
 		   (char *) &history_filename,
@@ -2030,7 +2039,7 @@
 2 == output annotated suitably for use by programs that control GDB.",
 		       &setlist);
       add_show_from_set (c, &showlist);
-      c->function.sfunc = set_async_annotation_level;
+      set_cmd_sfunc (c, set_async_annotation_level);
     }
   if (event_loop_p)
     {
Index: tracepoint.c
===================================================================
RCS file: /cvs/src/src/gdb/tracepoint.c,v
retrieving revision 1.31
diff -u -r1.31 tracepoint.c
--- tracepoint.c	2002/02/02 00:56:34	1.31
+++ tracepoint.c	2002/02/03 01:21:34
@@ -1,5 +1,7 @@
 /* Tracing functionality for remote targets in custom GDB protocol
-   Copyright 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+
+   Copyright 1997, 1998, 1999, 2000, 2001, 2002 Free Software
+   Foundation, Inc.
 
    This file is part of GDB.
 
Index: utils.c
===================================================================
RCS file: /cvs/src/src/gdb/utils.c,v
retrieving revision 1.60
diff -u -r1.60 utils.c
--- utils.c	2002/02/02 15:39:33	1.60
+++ utils.c	2002/02/03 01:21:39
@@ -2238,7 +2238,7 @@
 		   "Set number of characters gdb thinks are in a line.",
 		   &setlist);
   add_show_from_set (c, &showlist);
-  c->function.sfunc = set_width_command;
+  set_cmd_sfunc (c, set_width_command);
 
   add_show_from_set
     (add_set_cmd ("height", class_support,
Index: valprint.c
===================================================================
RCS file: /cvs/src/src/gdb/valprint.c,v
retrieving revision 1.21
diff -u -r1.21 valprint.c
--- valprint.c	2002/01/20 18:05:51	1.21
+++ valprint.c	2002/02/03 01:21:43
@@ -1484,14 +1484,14 @@
 		   "Set default input radix for entering numbers.",
 		   &setlist);
   add_show_from_set (c, &showlist);
-  c->function.sfunc = set_input_radix;
+  set_cmd_sfunc (c, set_input_radix);
 
   c = add_set_cmd ("output-radix", class_support, var_uinteger,
 		   (char *) &output_radix,
 		   "Set default output radix for printing of values.",
 		   &setlist);
   add_show_from_set (c, &showlist);
-  c->function.sfunc = set_output_radix;
+  set_cmd_sfunc (c, set_output_radix);
 
   /* The "set radix" and "show radix" commands are special in that they are
      like normal set and show commands but allow two normally independent
Index: wince.c
===================================================================
RCS file: /cvs/src/src/gdb/wince.c,v
retrieving revision 1.17
diff -u -r1.17 wince.c
--- wince.c	2001/05/04 04:15:28	1.17
+++ wince.c	2002/02/03 01:21:48
@@ -1983,7 +1983,7 @@
 	       (char *) "Set how to upload executables to remote device.\n",
 		     &setlist);
   add_show_from_set (set, &showlist);
-  set->function.cfunc = set_upload_type;
+  set_cmd_cfunc (set, set_upload_type);
   set_upload_type (NULL, 0);
 
   add_show_from_set
Index: cli/cli-cmds.c
===================================================================
RCS file: /cvs/src/src/gdb/cli/cli-cmds.c,v
retrieving revision 1.13
diff -u -r1.13 cli-cmds.c
--- cli-cmds.c	2002/02/02 00:56:36	1.13
+++ cli-cmds.c	2002/02/03 01:21:51
@@ -676,7 +676,7 @@
 		   "Set ",
 		   &setlist),
     add_show_from_set (c, &showlist);
-  c->function.sfunc = set_verbose;
+  set_cmd_sfunc (c, set_verbose);
   set_verbose (NULL, 0, c);
 
   add_prefix_cmd ("history", class_support, set_history,
Index: cli/cli-decode.c
===================================================================
RCS file: /cvs/src/src/gdb/cli/cli-decode.c,v
retrieving revision 1.12
diff -u -r1.12 cli-decode.c
--- cli-decode.c	2002/02/02 00:56:36	1.12
+++ cli-decode.c	2002/02/03 01:21:54
@@ -40,6 +40,46 @@
 
 static void help_all (struct ui_file *stream);
 
+/* Set the callback function for the specified command.  For each both
+   the commands callback and func() are set.  The latter set to a
+   bounce function (unless cfunc / sfunc is NULL that is).  */
+
+static void
+do_cfunc (struct cmd_list_element *c, char *args, int from_tty)
+{
+  c->function.cfunc (args, from_tty); /* Ok.  */
+}
+
+void
+set_cmd_cfunc (struct cmd_list_element *cmd,
+	       void (*cfunc) (char *args, int from_tty))
+{
+  if (cfunc == NULL)
+    cmd->func = NULL;
+  else
+    cmd->func = do_cfunc;
+  cmd->function.cfunc = cfunc; /* Ok.  */
+}
+
+static void
+do_sfunc (struct cmd_list_element *c, char *args, int from_tty)
+{
+  c->function.sfunc (args, from_tty, c); /* Ok.  */
+}
+
+void
+set_cmd_sfunc (struct cmd_list_element *cmd,
+	       void (*sfunc) (char *args, int from_tty,
+			      struct cmd_list_element * c))
+{
+  if (sfunc == NULL)
+    cmd->func = NULL;
+  else
+    cmd->func = do_sfunc;
+  cmd->function.sfunc = sfunc; /* Ok.  */
+}
+
+
 /* Add element named NAME.
    CLASS is the top level category into which commands are broken down
    for "help" purposes.
@@ -85,7 +125,7 @@
 
   c->name = name;
   c->class = class;
-  c->function.cfunc = fun;
+  set_cmd_cfunc (c, fun);
   c->doc = doc;
   c->flags = 0;
   c->replacement = NULL;
@@ -165,7 +205,10 @@
       return 0;
     }
 
-  c = add_cmd (name, class, old->function.cfunc, old->doc, list);
+  c = add_cmd (name, class, NULL, old->doc, list);
+  /* NOTE: Both FUNC and all the FUNCTIONs need to be copied.  */
+  c->func = old->func;
+  c->function = old->function;
   c->prefixlist = old->prefixlist;
   c->prefixname = old->prefixname;
   c->allow_unknown = old->allow_unknown;
@@ -244,7 +287,7 @@
   c->var = var;
   /* This needs to be something besides NULL so that this isn't
      treated as a help class.  */
-  c->function.sfunc = empty_sfunc;
+  set_cmd_sfunc (c, empty_sfunc);
   return c;
 }
 
@@ -516,18 +559,18 @@
      If c->prefixlist is nonzero, we have a prefix command.
      Print its documentation, then list its subcommands.
 
-     If c->function is nonzero, we really have a command.
-     Print its documentation and return.
+     If c->func is non NULL, we really have a command.  Print its
+     documentation and return.
 
-     If c->function is zero, we have a class name.
-     Print its documentation (as if it were a command)
-     and then set class to the number of this class
-     so that the commands in the class will be listed.  */
+     If c->func is NULL, we have a class name.  Print its
+     documentation (as if it were a command) and then set class to the
+     number of this class so that the commands in the class will be
+     listed.  */
 
   fputs_filtered (c->doc, stream);
   fputs_filtered ("\n", stream);
 
-  if (c->prefixlist == 0 && c->function.cfunc != NULL)
+  if (c->prefixlist == 0 && c->func != NULL)
     return;
   fprintf_filtered (stream, "\n");
 
@@ -536,7 +579,7 @@
     help_list (*c->prefixlist, c->prefixname, all_commands, stream);
 
   /* If this is a class name, print all of the commands in the class */
-  if (c->function.cfunc == NULL)
+  if (c->func == NULL)
     help_list (cmdlist, "", c->class, stream);
 
   if (c->hook_pre || c->hook_post)
@@ -620,7 +663,7 @@
         help_cmd_list (*c->prefixlist, all_commands, c->prefixname, 0, stream);
     
       /* If this is a class name, print all of the commands in the class */
-      else if (c->function.cfunc == NULL)
+      else if (c->func == NULL)
         help_cmd_list (cmdlist, c->class, "", 0, stream);
     }
 }
@@ -681,8 +724,8 @@
     {
       if (c->abbrev_flag == 0 &&
 	  (class == all_commands
-	   || (class == all_classes && c->function.cfunc == NULL)
-	   || (class == c->class && c->function.cfunc != NULL)))
+	   || (class == all_classes && c->func == NULL)
+	   || (class == c->class && c->func != NULL)))
 	{
 	  fprintf_filtered (stream, "%s%s -- ", prefix, c->name);
 	  print_doc_line (stream, c->doc);
@@ -710,7 +753,7 @@
   *nfound = 0;
   for (c = clist; c; c = c->next)
     if (!strncmp (command, c->name, len)
-	&& (!ignore_help_classes || c->function.cfunc))
+	&& (!ignore_help_classes || c->func))
       {
 	found = c;
 	(*nfound)++;
@@ -1241,7 +1284,7 @@
   for (ptr = list; ptr; ptr = ptr->next)
     if (!strncmp (ptr->name, text, textlen)
 	&& !ptr->abbrev_flag
-	&& (ptr->function.cfunc
+	&& (ptr->func
 	    || ptr->prefixlist))
       {
 	if (matches == sizeof_matchlist)
Index: cli/cli-decode.h
===================================================================
RCS file: /cvs/src/src/gdb/cli/cli-decode.h,v
retrieving revision 1.6
diff -u -r1.6 cli-decode.h
--- cli-decode.h	2002/02/02 00:56:36	1.6
+++ cli-decode.h	2002/02/03 01:21:55
@@ -121,7 +121,13 @@
     enum command_class class;
 
     /* Function definition of this command.  NULL for command class
-       names and for help topics that are not really commands.  */
+       names and for help topics that are not really commands.  NOTE:
+       cagney/2002-02-02: This function signature is evolving.  For
+       the moment suggest sticking with either set_cmd_cfunc() or
+       set_cmd_sfunc().  */
+    void (*func) (struct cmd_list_element *c, char *args, int from_tty);
+    /* The command's real callback.  At present func() bounces through
+       to one of the below.  */
     union
       {
 	/* If type is not_set_cmd, call it like this:  */
@@ -270,6 +276,16 @@
 						       **, char *, int,
 						       struct cmd_list_element
 						       **);
+
+/* Set the commands corresponding callback.  */
+
+extern void set_cmd_cfunc (struct cmd_list_element *cmd,
+			   void (*cfunc) (char *args, int from_tty));
+
+extern void set_cmd_sfunc (struct cmd_list_element *cmd,
+			   void (*sfunc) (char *args, int from_tty,
+					  struct cmd_list_element * c));
+
 
 extern struct cmd_list_element *lookup_cmd (char **,
 					    struct cmd_list_element *, char *,
Index: cli/cli-setshow.c
===================================================================
RCS file: /cvs/src/src/gdb/cli/cli-setshow.c,v
retrieving revision 1.6
diff -u -r1.6 cli-setshow.c
--- cli-setshow.c	2002/01/17 22:15:18	1.6
+++ cli-setshow.c	2002/02/03 01:21:55
@@ -345,7 +345,7 @@
     }
   else
     error ("gdb internal error: bad cmd_type in do_setshow_command");
-  (*c->function.sfunc) (NULL, from_tty, c);
+  c->func (c, NULL, from_tty);
   if (c->type == set_cmd && set_hook)
     set_hook (c);
 }

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