[src/trunk]: src/sys/arch/ia64/include PR port-ia64/51261

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

details:   https://anonhg.NetBSD.org/src/rev/ee66b48eda7b
branches:  trunk
changeset: 346880:ee66b48eda7b
user:      scole <scole%NetBSD.org@localhost>
date:      Fri Aug 05 16:59:26 2016 +0000

description:
PR port-ia64/51261

Add mb_read mb_write mb_memory

diffstat:

 sys/arch/ia64/include/lock.h |  24 +++++++++++++++++++++++-
 1 files changed, 23 insertions(+), 1 deletions(-)

diffs (36 lines):

diff -r 9bfaa43874c8 -r ee66b48eda7b sys/arch/ia64/include/lock.h
--- a/sys/arch/ia64/include/lock.h      Fri Aug 05 16:58:33 2016 +0000
+++ b/sys/arch/ia64/include/lock.h      Fri Aug 05 16:59:26 2016 +0000
@@ -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 @@
        *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_ */