Add a new mechanism, cndbctl(), to tell the console driver that

ddb is entered.  Don't refer to `in_Debugger' to see if we
are in the debugger.  (The variable used to be static in Debugger()
and wasn't updated if ddb is entered via traps and panic anyway.)

- Don't refer to `in_Debugger'.
- Add `db_active' to i386/i386/db_interface.d (as in
  alpha/alpha/db_interface.c).
- Remove cnpollc() stub from ddb/db_input.c.
- Add the dbctl function to syscons, pcvt, and sio. (The function for
  pcvt and sio is noop at the moment.)

Jointly developed by: bde and me

(The final version was tweaked by me and not reviewed by bde.  Thus,
if there is any error in this commit, that is entirely of mine, not
his.)

Some changes were obtained from: NetBSD

1 files changed, 2 insertions, 1 deletions

diff --git a/sys/ddb/ddb.h b/sys/ddb/ddb.h
index 46fb2b5..972772f 100644
--- a/sys/ddb/ddb.h
+++ b/sys/ddb/ddb.h
@@ -67,9 +67,11 @@ func_name(addr, have_addr, count, modif)			\
 
 extern char *esym;
 extern db_expr_t db_maxoff;
+extern int db_active;
 extern int db_indent;
 extern int db_inst_count;
 extern int db_load_count;
+extern int debugger_on_panic;
 extern int db_store_count;
 extern db_expr_t db_radix;
 extern db_expr_t db_max_width;
@@ -77,7 +79,6 @@ extern db_expr_t db_tab_stop_width;
 
 struct vm_map;
 
-void		cnpollc __P((int));
 void		db_check_interrupt __P((void));
 void		db_clear_watchpoints __P((void));
 db_addr_t	db_disasm __P((db_addr_t loc, boolean_t altfmt));