Add empty aesce files

For time being, we only support gcc and clang

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>

library/CMakeLists.txt

@@ -13,6 +13,7 @@ endif()
 set(src_crypto
     aes.c
     aesni.c
+    aesce.c
     aria.c
     asn1parse.c
     asn1write.c

library/Makefile

@@ -78,6 +78,7 @@ endif
 OBJS_CRYPTO= \
 	     aes.o \
 	     aesni.o \
+	     aesce.o \
 	     aria.o \
 	     asn1parse.o \
 	     asn1write.o \

library/aesce.c

@@ -0,0 +1,50 @@
+/*
+ *  Arm64 crypto engine support functions
+ *
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  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 <string.h>
+#include "common.h"
+
+#if defined(MBEDTLS_AESCE_C)
+
+#include "aesce.h"
+
+#if defined(MBEDTLS_HAVE_ARM64)
+
+#if defined(__clang__)
+#   if __clang_major__ < 4
+#       error "A more recent Clang is required for MBEDTLS_AES_C"
+#   endif
+#elif defined(__GNUC__)
+#   if __GNUC__ < 6
+#       error "A more recent GCC is required for MBEDTLS_AES_C"
+#   endif
+#else
+#    error "Only GCC and Clang supported for MBEDTLS_AES_C"
+#endif
+
+#if !defined(__ARM_FEATURE_CRYPTO)
+#   error "`crypto` feature moddifier MUST be enabled for MBEDTLS_AESCE_C."
+#   error "Typical option for GCC and Clang is `-march=armv8-a+crypto`."
+#endif /* !__ARM_FEATURE_CRYPTO */
+
+#include <arm_neon.h>
+
+#endif /* MBEDTLS_HAVE_ARM64 */
+
+#endif /* MBEDTLS_AESCE_C */

library/aesce.h

@@ -0,0 +1,50 @@
+/**
+ * \file aesce.h
+ *
+ * \brief AES-CE for hardware AES acceleration on ARMv8 processors with crypto
+ *        engine.
+ *
+ * \warning These functions are only for internal use by other library
+ *          functions; you must not call them directly.
+ */
+/*
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0
+ *
+ *  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.
+ */
+#ifndef MBEDTLS_AESCE_H
+#define MBEDTLS_AESCE_H
+
+#include "mbedtls/build_info.h"
+
+#include "mbedtls/aes.h"
+
+
+#if !defined(MBEDTLS_HAVE_ARM64) && \
+    (defined(__aarch64__) || defined(_M_ARM64))
+#define MBEDTLS_HAVE_ARM64
+#endif
+
+#if defined(MBEDTLS_HAVE_ARM64)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* MBEDTLS_HAVE_ARM64 */
+
+#endif /* MBEDTLS_AESCE_H */