[src/trunk]: src/sys/arch/powerpc/mpc6xx Use lvewx/stvewx for VSCR and save o...

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

details:   https://anonhg.NetBSD.org/src/rev/06cba344e774
branches:  trunk
changeset: 533674:06cba344e774
user:      matt <matt%NetBSD.org@localhost>
date:      Sun Jul 07 00:46:20 2002 +0000

description:
Use lvewx/stvewx for VSCR and save ourselves 12 bytes we don't need to load.

diffstat:

 sys/arch/powerpc/mpc6xx/altivec.c |  10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diffs (31 lines):

diff -r 151ffb7044ff -r 06cba344e774 sys/arch/powerpc/mpc6xx/altivec.c
--- a/sys/arch/powerpc/mpc6xx/altivec.c Sun Jul 07 00:43:11 2002 +0000
+++ b/sys/arch/powerpc/mpc6xx/altivec.c Sun Jul 07 00:46:20 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: altivec.c,v 1.2 2002/07/05 18:45:22 matt Exp $ */
+/*     $NetBSD: altivec.c,v 1.3 2002/07/07 00:46:20 matt Exp $ */
 
 /*
  * Copyright (C) 1996 Wolfgang Solfrank.
@@ -87,8 +87,8 @@
         * (this needs to done before loading the user's vector registers
         * since we need to a scratch vector register)
         */
-       __asm __volatile("lvx %2,%0,%1; mtvscr %2" \
-           ::  "r"(vr), "r"(offsetof(struct vreg, vreg[32])), "n"(0));
+       __asm __volatile("vxor %2,%2,%2; lvewx %2,%0,%1; mtvscr %2" \
+           ::  "r"(vr), "r"(offsetof(struct vreg, vscr)), "n"(0));
 
        /*
         * VRSAVE will be restored when trap frame returns
@@ -152,8 +152,8 @@
         * Save VSCR (this needs to be done after save the vector registers
         * since we need to use one as scratch).
         */
-       __asm __volatile("mfvscr %2; stvx %2,%0,%1" \
-           ::  "r"(vr), "r"(offsetof(struct vreg, vreg[32])), "n"(0));
+       __asm __volatile("mfvscr %2; stvewx %2,%0,%1" \
+           ::  "r"(vr), "r"(offsetof(struct vreg, vscr)), "n"(0));
 
        /*
         * Save VRSAVE