[src/trunk]: src/sys/arch/powerpc/powerpc ofwr_init(): don't clobber r7 -- ea...

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

details:   https://anonhg.NetBSD.org/src/rev/6c841bed2034
branches:  trunk
changeset: 516412:6c841bed2034
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Tue Oct 23 02:59:09 2001 +0000

description:
ofwr_init(): don't clobber r7 -- early startup code needs it to find
DDB symbols.

diffstat:

 sys/arch/powerpc/powerpc/ofwreal.S |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (27 lines):

diff -r c7c22f4f84b0 -r 6c841bed2034 sys/arch/powerpc/powerpc/ofwreal.S
--- a/sys/arch/powerpc/powerpc/ofwreal.S        Tue Oct 23 02:10:23 2001 +0000
+++ b/sys/arch/powerpc/powerpc/ofwreal.S        Tue Oct 23 02:59:09 2001 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ofwreal.S,v 1.2 1997/04/16 22:43:46 thorpej Exp $      */
+/*     $NetBSD: ofwreal.S,v 1.3 2001/10/23 02:59:09 thorpej Exp $      */
 
 /*
  * Copyright (C) 1996 Wolfgang Solfrank.
@@ -71,7 +71,8 @@
 ENTRY(ofwr_init)
        mflr    31                      /* save return address */
 
-       mr      13,6                    /* save args (only pointer used) */
+       mr      13,6                    /* save args */
+       mr      12,7                    /* save argslen */
        lis     8,ofentry@ha
        stw     5,ofentry@l(8)          /* save virtual mode firmware entry */
 
@@ -84,6 +85,7 @@
        addi    5,5,fwentry@l
 
        mr      6,13                    /* restore args pointer */
+       mr      7,12                    /* restore args length */
        mtlr    31                      /* restore return address */
        blr