* defs.h, infrun.c (wait_for_inferior), top.c: Call

	target_wait_hook to allow GUI to handle blocking for inferior.  Call
	call_command_hook in execute_command to provide means for wrapping
	commands with GUI state change updates.
	* gdbtk.c (gdb_cmd):  Force GUI into idle mode when errors occur.
	* (gdb_stop):  New tcl command to stop the target process.
	* (x_event, gdbtk_wait):  Allow GUI to interrupt gdb out of target
	waits.
	* (gdbtk_call_command):  Wrapper around command processing to
	alert GUI of target state changes.
	* (gdbtk_init):  Get the fd of X server for doing async
	notification of X events (via x_event).  Setup new hooks.
	* gdbtk.tcl:  Add scrollbars to assembly and command windows.
	* Change window foreground & background colors.
	* Create margin tag for breakpoints in source and assembly windows.
	* Add new routines to be invoked when target state changes to/from
	idle.
	* Add start of expression window.
	* Change bindings of mouse button 1 in assembly and source window
	to just set or clear breakpoints when in the margin tag.
	* Change shape of register window to be more vertical to better
	reflect it's contents.
	* Add stop button.
	* Cleanup some code around command window bindings.

	* infrun.c (wait_for_inferior):  Make sure
	through_sigtramp_breakpoint is non-null before deleting.

1 files changed, 12 insertions, 0 deletions

diff --git a/gdb/top.c b/gdb/top.c
index bf185b4..9679f58 100644
--- a/gdb/top.c
+++ b/gdb/top.c
@@ -379,6 +379,16 @@ void (*disable_breakpoint_hook) PARAMS ((struct breakpoint *bpt));
 
 void (*interactive_hook) PARAMS ((void));
 
+/* Called when going to wait for the target.  Usually allows the GUI to run
+   while waiting for target events.  */
+
+int (*target_wait_hook) PARAMS ((int pid, struct target_waitstatus *status));
+
+/* Used by UI as a wrapper around command execution.  May do various things
+   like enabling/disabling buttons, etc...  */
+
+void (*call_command_hook) PARAMS ((struct cmd_list_element *c, char *cmd,
+				   int from_tty));
 
 /* Where to go for return_to_top_level (RETURN_ERROR).  */
 jmp_buf error_return;
@@ -858,6 +868,8 @@ execute_command (p, from_tty)
 	do_setshow_command (arg, from_tty & caution, c);
       else if (c->function.cfunc == NO_FUNCTION)
 	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);
    }