From 342f1c8c6a5710f960fea7396ec57e8661e389f2 Mon Sep 17 00:00:00 2001
From: Miod Vallat <miod@cvs.openbsd.org>
Date: Thu, 5 Apr 2007 17:33:51 +0000
Subject: Wrap bit operations between splhigh()/splx() for atomicity wrt
 interrupts. Not enough for multiprocessor, but we're not there yet anyway.

---
 sys/arch/vax/include/atomic.h | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'sys')

diff --git a/sys/arch/vax/include/atomic.h b/sys/arch/vax/include/atomic.h
index 0e390863980..3cf2f7ebed0 100644
--- a/sys/arch/vax/include/atomic.h
+++ b/sys/arch/vax/include/atomic.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: atomic.h,v 1.2 2007/02/19 17:18:43 deraadt Exp $	*/
+/*	$OpenBSD: atomic.h,v 1.3 2007/04/05 17:33:50 miod Exp $	*/
 
 /* Public Domain */
 
@@ -7,16 +7,26 @@
 
 #if defined(_KERNEL)
 
+#include <machine/mtpr.h>
+
 static __inline void
 atomic_setbits_int(__volatile unsigned int *uip, unsigned int v)
 {
+	int s;
+
+	s = splhigh();
 	*uip |= v;
+	splx(s);
 }
 
 static __inline void
 atomic_clearbits_int(__volatile unsigned int *uip, unsigned int v)
 {
+	int s;
+
+	s = splhigh();
 	*uip &= ~v;
+	splx(s);
 }
 
 #endif /* defined(_KERNEL) */
-- 
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