From 8692456226b084333c8708b2887de22435cf3166 Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Mon, 13 Apr 2020 12:10:37 +0200
Subject: [PATCH] Add read barrier definition

---
 common_arm.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/common_arm.h b/common_arm.h
index 8411e6dd6..ee691ad75 100644
--- a/common_arm.h
+++ b/common_arm.h
@@ -37,11 +37,13 @@ USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #define MB
 #define WMB
+#define RMB
 
 #else
 
 #define MB   __asm__ __volatile__ ("dmb  ish" : : : "memory")
 #define WMB  __asm__ __volatile__ ("dmb  ishst" : : : "memory")
+#define RMB  __asm__ __volatile__ ("dmb  ishld" : : : "memory")
 
 #endif