[src/trunk]: src/sys/arch/powerpc/include Some ports use %r0 as tmp2 to INIT_...

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

details:   https://anonhg.NetBSD.org/src/rev/1a37d625216d
branches:  trunk
changeset: 761313:1a37d625216d
user:      matt <matt%NetBSD.org@localhost>
date:      Sun Jan 23 15:51:07 2011 +0000

description:
Some ports use %r0 as tmp2 to INIT_CPUINFO which has adverse effects so
never use tmp2 to hold an address.

diffstat:

 sys/arch/powerpc/include/asm.h |  10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diffs (26 lines):

diff -r 80579de3cd26 -r 1a37d625216d sys/arch/powerpc/include/asm.h
--- a/sys/arch/powerpc/include/asm.h    Sun Jan 23 14:08:53 2011 +0000
+++ b/sys/arch/powerpc/include/asm.h    Sun Jan 23 15:51:07 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: asm.h,v 1.34 2011/01/18 01:02:54 matt Exp $    */
+/*     $NetBSD: asm.h,v 1.35 2011/01/23 15:51:07 matt Exp $    */
 
 /*
  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
@@ -211,12 +211,12 @@
        li      tmp2,-1;                                                \
        stint   tmp2,CI_IDEPTH(tmp1);                                   \
        li      tmp2,0;                                                 \
-       lis     tmp2,_C_LABEL(lwp0)@h;                                  \
-       ori     tmp2,tmp2,_C_LABEL(lwp0)@l;                             \
-       stptr   er,L_PCB(tmp2);         /* XXXuvm_lwp_getuarea */       \
+       lis     tmp1,_C_LABEL(lwp0)@h;                                  \
+       ori     tmp1,tmp1,_C_LABEL(lwp0)@l;                             \
+       stptr   er,L_PCB(tmp1);         /* XXXuvm_lwp_getuarea */       \
        addi    er,er,USPACE;           /* stackpointer for lwp0 */     \
        addi    sp,er,-FRAMELEN-CALLFRAMELEN;   /* stackpointer for lwp0 */ \
-       stptr   sp,L_MD_UTF(tmp2);      /* save in lwp0.l_md.md_utf */  \
+       stptr   sp,L_MD_UTF(tmp1);      /* save in lwp0.l_md.md_utf */  \
                /* er = end of mem reserved for kernel */               \
        li      tmp2,0;                                                 \
        stptr   tmp2,-CALLFRAMELEN(er); /* end of stack chain */        \