pac_armv81.h

/******************************************************************************
 * @file     pac_armv81.h
 * @brief    CMSIS PAC key functions for Armv8.1-M PAC extension
 * @version  V1.0.0
 * @date     23. March 2022
 ******************************************************************************/
/*
 * Copyright (c) 2022 Arm Limited. All rights reserved.
 *
 * 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
 *
 * 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.
 */
 
#if   defined ( __ICCARM__ )
  #pragma system_include         /* treat file as system include file for MISRA check */
#elif defined (__clang__)
  #pragma clang system_header    /* treat file as system include file */
#endif
 
#ifndef PAC_ARMV81_H
#define PAC_ARMV81_H
 
 
/* ###################  PAC Key functions  ########################### */
#if (defined (__ARM_FEATURE_PAUTH) && (__ARM_FEATURE_PAUTH == 1))
 
__STATIC_FORCEINLINE void __get_PAC_KEY_P (uint32_t* pPacKey) {
  __ASM volatile (
  "mrs   r1, pac_key_p_0\n"
  "str   r1,[%0,#0]\n"
  "mrs   r1, pac_key_p_1\n"
  "str   r1,[%0,#4]\n"
  "mrs   r1, pac_key_p_2\n"
  "str   r1,[%0,#8]\n"
  "mrs   r1, pac_key_p_3\n"
  "str   r1,[%0,#12]\n"
  : : "r" (pPacKey) : "memory", "r1"
  );
}
 
__STATIC_FORCEINLINE void __set_PAC_KEY_P (uint32_t* pPacKey) {
  __ASM volatile (
  "ldr   r1,[%0,#0]\n"
  "msr   pac_key_p_0, r1\n"
  "ldr   r1,[%0,#4]\n"
  "msr   pac_key_p_1, r1\n"
  "ldr   r1,[%0,#8]\n"
  "msr   pac_key_p_2, r1\n"
  "ldr   r1,[%0,#12]\n"
  "msr   pac_key_p_3, r1\n"
  : : "r" (pPacKey) : "memory", "r1"
  );
}
 
__STATIC_FORCEINLINE void __get_PAC_KEY_U (uint32_t* pPacKey) {
  __ASM volatile (
  "mrs   r1, pac_key_u_0\n"
  "str   r1,[%0,#0]\n"
  "mrs   r1, pac_key_u_1\n"
  "str   r1,[%0,#4]\n"
  "mrs   r1, pac_key_u_2\n"
  "str   r1,[%0,#8]\n"
  "mrs   r1, pac_key_u_3\n"
  "str   r1,[%0,#12]\n"
  : : "r" (pPacKey) : "memory", "r1"
  );
}
 
__STATIC_FORCEINLINE void __set_PAC_KEY_U (uint32_t* pPacKey) {
  __ASM volatile (
  "ldr   r1,[%0,#0]\n"
  "msr   pac_key_u_0, r1\n"
  "ldr   r1,[%0,#4]\n"
  "msr   pac_key_u_1, r1\n"
  "ldr   r1,[%0,#8]\n"
  "msr   pac_key_u_2, r1\n"
  "ldr   r1,[%0,#12]\n"
  "msr   pac_key_u_3, r1\n"
  : : "r" (pPacKey) : "memory", "r1"
  );
}
 
#if (defined (__ARM_FEATURE_CMSE ) && (__ARM_FEATURE_CMSE == 3))
 
__STATIC_FORCEINLINE void __TZ_get_PAC_KEY_P_NS (uint32_t* pPacKey) {
  __ASM volatile (
  "mrs   r1, pac_key_p_0_ns\n"
  "str   r1,[%0,#0]\n"
  "mrs   r1, pac_key_p_1_ns\n"
  "str   r1,[%0,#4]\n"
  "mrs   r1, pac_key_p_2_ns\n"
  "str   r1,[%0,#8]\n"
  "mrs   r1, pac_key_p_3_ns\n"
  "str   r1,[%0,#12]\n"
  : : "r" (pPacKey) : "memory", "r1"
  );
}
 
__STATIC_FORCEINLINE void __TZ_set_PAC_KEY_P_NS (uint32_t* pPacKey) {
  __ASM volatile (
  "ldr   r1,[%0,#0]\n"
  "msr   pac_key_p_0_ns, r1\n"
  "ldr   r1,[%0,#4]\n"
  "msr   pac_key_p_1_ns, r1\n"
  "ldr   r1,[%0,#8]\n"
  "msr   pac_key_p_2_ns, r1\n"
  "ldr   r1,[%0,#12]\n"
  "msr   pac_key_p_3_ns, r1\n"
  : : "r" (pPacKey) : "memory", "r1"
  );
}
 
__STATIC_FORCEINLINE void __TZ_get_PAC_KEY_U_NS (uint32_t* pPacKey) {
  __ASM volatile (
  "mrs   r1, pac_key_u_0_ns\n"
  "str   r1,[%0,#0]\n"
  "mrs   r1, pac_key_u_1_ns\n"
  "str   r1,[%0,#4]\n"
  "mrs   r1, pac_key_u_2_ns\n"
  "str   r1,[%0,#8]\n"
  "mrs   r1, pac_key_u_3_ns\n"
  "str   r1,[%0,#12]\n"
  : : "r" (pPacKey) : "memory", "r1"
  );
}
 
__STATIC_FORCEINLINE void __TZ_set_PAC_KEY_U_NS (uint32_t* pPacKey) {
  __ASM volatile (
  "ldr   r1,[%0,#0]\n"
  "msr   pac_key_u_0_ns, r1\n"
  "ldr   r1,[%0,#4]\n"
  "msr   pac_key_u_1_ns, r1\n"
  "ldr   r1,[%0,#8]\n"
  "msr   pac_key_u_2_ns, r1\n"
  "ldr   r1,[%0,#12]\n"
  "msr   pac_key_u_3_ns, r1\n"
  : : "r" (pPacKey) : "memory", "r1"
  );
}
 
#endif /* (defined (__ARM_FEATURE_CMSE ) && (__ARM_FEATURE_CMSE == 3)) */
 
#endif /* (defined (__ARM_FEATURE_PAUTH) && (__ARM_FEATURE_PAUTH == 1)) */
 
#endif /* PAC_ARMV81_H */