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Ensure SBZ register is zero

This commit is contained in:
skrll 2014-03-28 21:32:41 +00:00
parent 292aec205d
commit 39ac7250f3
1 changed files with 3 additions and 1 deletions
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4
common/lib/libc/arch/arm/atomic/membar_ops.S
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@ -1,4 +1,4 @@
/* $NetBSD: membar_ops.S,v 1.5 2014/03/04 16:15:28 matt Exp $ */
/* $NetBSD: membar_ops.S,v 1.6 2014/03/28 21:32:41 skrll Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* All rights reserved.
@ -36,6 +36,7 @@ ENTRY_NP(_membar_producer)
#ifdef _ARM_ARCH_7
dsb
#else
mov r0, #0
mcr p15, 0, r0, c7, c10, 4 /* Data Synchronization Barrier */
#endif
RET
@ -48,6 +49,7 @@ ENTRY_NP(_membar_sync)
#ifdef _ARM_ARCH_7
dmb
#else
mov r0, #0
mcr p15, 0, r0, c7, c10, 5 /* Data Memory Barrier */
#endif
RET