1 files changed, 33 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseLib/Arm/MemoryFence.S b/roms/edk2/MdePkg/Library/BaseLib/Arm/MemoryFence.S
new file mode 100644
index 000000000..8bf1a7505
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseLib/Arm/MemoryFence.S
@@ -0,0 +1,33 @@
+##------------------------------------------------------------------------------
+#
+# MemoryFence() for AArch64
+#
+# Copyright (c) 2013, ARM Ltd. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##------------------------------------------------------------------------------
+
+.text
+.p2align 2
+
+GCC_ASM_EXPORT(MemoryFence)
+
+
+#/**
+#  Used to serialize load and store operations.
+#
+#  All loads and stores that proceed calls to this function are guaranteed to be
+#  globally visible when this function returns.
+#
+#**/
+#VOID
+#EFIAPI
+#MemoryFence (
+#  VOID
+#  );
+#
+ASM_PFX(MemoryFence):
+    // System wide Data Memory Barrier.
+    dmb
+    bx   lr