From 01e980a512c91a4c3eae0a25176eb9a7ee07e455 Mon Sep 17 00:00:00 2001
From: scole <scole@NetBSD.org>
Date: Fri, 5 Aug 2016 16:59:26 +0000
Subject: [PATCH] PR port-ia64/51261

Add mb_read mb_write mb_memory
---
 sys/arch/ia64/include/lock.h | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/sys/arch/ia64/include/lock.h b/sys/arch/ia64/include/lock.h
index 327923ce9c01..46dc1f9cf91c 100644
--- a/sys/arch/ia64/include/lock.h
+++ b/sys/arch/ia64/include/lock.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: lock.h,v 1.4 2009/07/20 04:41:37 kiyohara Exp $	*/
+/*	$NetBSD: lock.h,v 1.5 2016/08/05 16:59:26 scole Exp $	*/
 
 /*-
  * Copyright (c) 2000 The NetBSD Foundation, Inc.
@@ -116,4 +116,26 @@ __cpu_simple_unlock(__cpu_simple_lock_t *lockp)
 	*lockp = __SIMPLELOCK_UNLOCKED;
 }
 
+/* XXX mf.a overkill for these? */
+static __inline void
+mb_read(void)
+{
+	__asm __volatile("mf.a	\n"
+			 "mf	\n" ::: "memory");
+}
+
+static __inline void
+mb_write(void)
+{
+	__asm __volatile("mf.a	\n"
+			 "mf	\n" ::: "memory");
+}
+
+static __inline void
+mb_memory(void)
+{
+	__asm __volatile("mf.a	\n"
+			 "mf	\n" ::: "memory");
+}
+
 #endif /* _IA64_LOCK_H_ */