[src/trunk]: src/sys/arch/powerpc/booke Nuke the mfsprg2 %r3 after sctrapexit...

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

details:   https://anonhg.NetBSD.org/src/rev/059f0ca01b9d
branches:  trunk
changeset: 766364:059f0ca01b9d
user:      matt <matt%NetBSD.org@localhost>
date:      Tue Jun 21 05:33:04 2011 +0000

description:
Nuke the mfsprg2 %r3 after sctrapexit.  curlwp is already in %r13 and the
value fetched to %r3 isn't used.

diffstat:

 sys/arch/powerpc/booke/trap_subr.S |  5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diffs (26 lines):

diff -r 919f8d2dc7c5 -r 059f0ca01b9d sys/arch/powerpc/booke/trap_subr.S
--- a/sys/arch/powerpc/booke/trap_subr.S        Tue Jun 21 05:31:29 2011 +0000
+++ b/sys/arch/powerpc/booke/trap_subr.S        Tue Jun 21 05:33:04 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: trap_subr.S,v 1.5 2011/06/18 06:37:38 matt Exp $       */
+/*     $NetBSD: trap_subr.S,v 1.6 2011/06/21 05:33:04 matt Exp $       */
 /*-
  * Copyright (c) 2010, 2011 The NetBSD Foundation, Inc.
  * All rights reserved.
@@ -34,7 +34,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-RCSID("$NetBSD: trap_subr.S,v 1.5 2011/06/18 06:37:38 matt Exp $")
+RCSID("$NetBSD: trap_subr.S,v 1.6 2011/06/21 05:33:04 matt Exp $")
 
        .globl  _C_LABEL(sctrapexit), _C_LABEL(trapexit), _C_LABEL(intrcall)
 
@@ -466,7 +466,6 @@
        blrl                                    /* syscall(tf) */
 _C_LABEL(sctrapexit):
        wrteei  0                               /* disable interrupts */
-       mfsprg2 %r3                             /* get curlwp */
        lwz     %r4, L_MD_ASTPENDING(%r13)      /* get ast pending */
        cmplwi  %r4, 0                          /* is there an ast pending */
        beq+    trapdone                        /*    nope, proceed to exit */