1 files changed, 43 insertions, 0 deletions
diff --git a/common/VIL/l2l3_stack/hle.c b/common/VIL/l2l3_stack/hle.c
new file mode 100644
index 00000000..a0661b32
--- /dev/null
+++ b/common/VIL/l2l3_stack/hle.c
@@ -0,0 +1,43 @@
+/*
+// Copyright (c) 2017 Intel Corporation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+*/
+#include "tsx.h"
+//#include "hle.h"
+#include <xmmintrin.h>
+
+void hle_init(void)
+{
+	mutex_val = 0;
+}
+
+int hle_lock(void)
+{
+	while (__atomic_exchange_n
+				 (&mutex_val, 1, __ATOMIC_ACQUIRE | __ATOMIC_HLE_ACQUIRE))
+		_mm_pause();
+	return TRUE;
+}
+
+int hle_release(void)
+{
+	__atomic_store_n(&mutex_val, 0,
+			 __ATOMIC_RELEASE | __ATOMIC_HLE_RELEASE);
+	return TRUE;
+}
+
+int is_hle_locked(void)
+{
+	return (mutex_val == 0) ? FALSE : TRUE;
+}