Author: rwatson
Date: Sat Aug 27 22:10:45 2011
New Revision: 225221
URL: http://svn.freebsd.org/changeset/base/225221
Log:
Add support for alternative break-to-debugger to syscons(4). While most
keyboards allow console break sequences (such as ctrl-alt-esc) to be
entered, alternative break can prove useful under virtualisation and
remote console systems where entering control sequences can be
difficult or unreliable.
MFC after: 3 weeks
Approved by: re (bz)
Modified:
head/sys/dev/syscons/syscons.c
head/sys/dev/syscons/syscons.h
Modified: head/sys/dev/syscons/syscons.c
==============================================================================
--- head/sys/dev/syscons/syscons.c Sat Aug 27 22:08:01 2011
(r225220)
+++ head/sys/dev/syscons/syscons.c Sat Aug 27 22:10:45 2011
(r225221)
@@ -3562,6 +3562,10 @@ next_code:
/* goto next_code */
} else {
/* regular keys (maybe MKEY is set) */
+#if !defined(SC_DISABLE_KDBKEY) && defined(KDB)
+ if (enable_kdbkey)
+ kdb_alt_break(c, &sc->sc_altbrk);
+#endif
if (!(sc->flags & SC_SCRN_BLANKED))
return c;
}
Modified: head/sys/dev/syscons/syscons.h
==============================================================================
--- head/sys/dev/syscons/syscons.h Sat Aug 27 22:08:01 2011
(r225220)
+++ head/sys/dev/syscons/syscons.h Sat Aug 27 22:10:45 2011
(r225221)
@@ -266,6 +266,9 @@ typedef struct sc_softc {
u_char cursor_char;
u_char mouse_char;
+#ifdef KDB
+ int sc_altbrk;
+#endif
} sc_softc_t;
/* virtual screen */
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