From 1810957e204beb05eec6363315050933b4d19384 Mon Sep 17 00:00:00 2001
From: Miod Vallat <miod@cvs.openbsd.org>
Date: Thu, 3 Jan 2008 22:33:50 +0000
Subject: Add an explicit clobber to prevent gcc from reordering instructions
 around sparc_wrpr(), similar to the psl.h changes years ago; ok kettenis@

---
 sys/arch/sparc64/include/ctlreg.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'sys/arch/sparc64/include/ctlreg.h')

diff --git a/sys/arch/sparc64/include/ctlreg.h b/sys/arch/sparc64/include/ctlreg.h
index c8ea062cd3e..41e75f5d2a9 100644
--- a/sys/arch/sparc64/include/ctlreg.h
+++ b/sys/arch/sparc64/include/ctlreg.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ctlreg.h,v 1.13 2007/11/28 20:05:30 kettenis Exp $	*/
+/*	$OpenBSD: ctlreg.h,v 1.14 2008/01/03 22:33:49 miod Exp $	*/
 /*	$NetBSD: ctlreg.h,v 1.28 2001/08/06 23:55:34 eeh Exp $ */
 
 /*
@@ -542,6 +542,7 @@ do {									\
 	else								\
 		__asm __volatile("wrpr %0, %1, %%" #name		\
 		    : : "r" (val), "rI" (xor) : "%g0");			\
+	__asm __volatile("" : : : "memory");				\
 } while(0)
 
 
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