[src/trunk]: src/lib/libc/arch/mips/sys We can't assume syscall retains t0, u...

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

details:   https://anonhg.NetBSD.org/src/rev/dd86c740838e
branches:  trunk
changeset: 759519:dd86c740838e
user:      tsutsui <tsutsui%NetBSD.org@localhost>
date:      Sun Dec 12 09:03:06 2010 +0000

description:
We can't assume syscall retains t0, unless it's documented as ABI.

diffstat:

 lib/libc/arch/mips/sys/sbrk.S |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (26 lines):

diff -r 53a97d33e785 -r dd86c740838e lib/libc/arch/mips/sys/sbrk.S
--- a/lib/libc/arch/mips/sys/sbrk.S     Sun Dec 12 09:00:37 2010 +0000
+++ b/lib/libc/arch/mips/sys/sbrk.S     Sun Dec 12 09:03:06 2010 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: sbrk.S,v 1.17 2009/12/14 01:07:42 matt Exp $   */
+/*     $NetBSD: sbrk.S,v 1.18 2010/12/12 09:03:06 tsutsui Exp $        */
 
 /*-
  * Copyright (c) 1991, 1993
@@ -38,7 +38,7 @@
 #if 0
        RCSID("from: @(#)sbrk.s 8.1 (Berkeley) 6/4/93")
 #else
-       RCSID("$NetBSD: sbrk.S,v 1.17 2009/12/14 01:07:42 matt Exp $")
+       RCSID("$NetBSD: sbrk.S,v 1.18 2010/12/12 09:03:06 tsutsui Exp $")
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -62,6 +62,7 @@
        SYSTRAP(break)
        bne             a3, zero, 1f
        move            v0, v1          # return old val of curbrk from above
+       PTR_LA          t0, _C_LABEL(__curbrk)
        PTR_S           a0, 0(t0)       # save current val of curbrk from above
        PIC_RETURN()
 1: