[src/trunk]: src/sys/arch/m68k/m68k use mvz[wb] when possible

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/b2f036c8e44c
branches:  trunk
changeset: 788818:b2f036c8e44c
user:      matt <matt%NetBSD.org@localhost>
date:      Mon Jul 22 03:37:17 2013 +0000

description:
use mvz[wb] when possible

diffstat:

 sys/arch/m68k/m68k/oc_cksum.s |  14 +++++++++++++-
 1 files changed, 13 insertions(+), 1 deletions(-)

diffs (41 lines):

diff -r 8b5028f4b0c2 -r b2f036c8e44c sys/arch/m68k/m68k/oc_cksum.s
--- a/sys/arch/m68k/m68k/oc_cksum.s     Mon Jul 22 03:30:38 2013 +0000
+++ b/sys/arch/m68k/m68k/oc_cksum.s     Mon Jul 22 03:37:17 2013 +0000
@@ -1,4 +1,4 @@
-|      $NetBSD: oc_cksum.s,v 1.7 2013/07/22 03:30:38 matt Exp $
+|      $NetBSD: oc_cksum.s,v 1.8 2013/07/22 03:37:17 matt Exp $
 
 | Copyright (c) 1988 Regents of the University of California.
 | All rights reserved.
@@ -194,19 +194,31 @@
        jeq     L6              | if 1 excess
 
        | 3 bytes excess
+#ifdef __mcoldfire__
+       mvzw    (-3,%a0,%d1:l),%d2      | add in last full word then drop
+#else
        clrl    %d2
        movw    (-3,%a0,%d1:l),%d2      | add in last full word then drop
+#endif
        addl    %d2,%d0         |  through to pick up last byte
 
 L6:    | 1 byte excess
+#ifdef __mcoldfire__
+       mvzb    (-1,%a0,%d1:l),%d2
+#else
        clrl    %d2
        movb    (-1,%a0,%d1:l),%d2
+#endif
        lsll    #8,%d2
        addl    %d2,%d0
        jra     L1
 
 L7:    | 2 bytes excess
+#ifdef __mcoldfire__
+       mvzw    (-2,%a0,%d1:l),%d2
+#else
        clrl    %d2
        movw    (-2,%a0,%d1:l),%d2
+#endif
        addl    %d2,%d0
        jra     L1