CMSIS-Core(M): Armv8-M Secure Stack Sealing enhancement.

CMSIS/Core/Include/cmsis_armclang_ltm.h

@@ -1,11 +1,11 @@
 /**************************************************************************//**
  * @file     cmsis_armclang_ltm.h
  * @brief    CMSIS compiler armclang (Arm Compiler 6) header file
- * @version  V1.3.0
- * @date     26. March 2020
+ * @version  V1.4.0
+ * @date     29. January 2021
  ******************************************************************************/
 /*
- * Copyright (c) 2018-2020 Arm Limited. All rights reserved.
+ * Copyright (c) 2018-2021 Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: Apache-2.0
  *
@@ -136,6 +136,25 @@
 #define __VECTOR_TABLE_ATTRIBUTE  __attribute__((used, section("RESET")))
 #endif
 
+#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
+#ifndef __STACK_SEAL
+#define __STACK_SEAL              Image$$STACKSEAL$$ZI$$Base
+#endif
+
+#ifndef __TZ_STACK_SEAL_SIZE
+#define __TZ_STACK_SEAL_SIZE      8U
+#endif
+
+#ifndef __TZ_STACK_SEAL_VALUE
+#define __TZ_STACK_SEAL_VALUE     0xFEF5EDA5FEF5EDA5ULL
+#endif
+
+
+__STATIC_FORCEINLINE void __TZ_set_STACKSEAL_S (uint32_t* stackTop) {
+  *((uint64_t *)stackTop) = __TZ_STACK_SEAL_VALUE;
+}
+#endif
+
 
 /* ###########################  Core Function Access  ########################### */
 /** \ingroup  CMSIS_Core_FunctionInterface