207 lines
5.9 KiB
C
207 lines
5.9 KiB
C
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/******************************************************************************
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* @file pac_armv81.h
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* @brief CMSIS PAC key functions for Armv8.1-M PAC extension
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* @version V1.0.0
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* @date 23. March 2022
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******************************************************************************/
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/*
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* Copyright (c) 2022 Arm Limited. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an AS IS BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#if defined ( __ICCARM__ )
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#pragma system_include /* treat file as system include file for MISRA check */
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#elif defined (__clang__)
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#pragma clang system_header /* treat file as system include file */
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#endif
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#ifndef PAC_ARMV81_H
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#define PAC_ARMV81_H
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/* ################### PAC Key functions ########################### */
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/**
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\ingroup CMSIS_Core_FunctionInterface
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\defgroup CMSIS_Core_PacKeyFunctions PAC Key functions
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\brief Functions that access the PAC keys.
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@{
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*/
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#if (defined (__ARM_FEATURE_PAUTH) && (__ARM_FEATURE_PAUTH == 1))
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/**
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\brief read the PAC key used for privileged mode
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\details Reads the PAC key stored in the PAC_KEY_P registers.
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\param [out] pPacKey 128bit PAC key
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*/
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__STATIC_FORCEINLINE void __get_PAC_KEY_P (uint32_t* pPacKey) {
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__ASM volatile (
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"mrs r1, pac_key_p_0\n"
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"str r1,[%0,#0]\n"
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"mrs r1, pac_key_p_1\n"
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"str r1,[%0,#4]\n"
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"mrs r1, pac_key_p_2\n"
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"str r1,[%0,#8]\n"
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"mrs r1, pac_key_p_3\n"
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"str r1,[%0,#12]\n"
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: : "r" (pPacKey) : "memory", "r1"
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);
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}
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/**
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\brief write the PAC key used for privileged mode
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\details writes the given PAC key to the PAC_KEY_P registers.
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\param [in] pPacKey 128bit PAC key
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*/
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__STATIC_FORCEINLINE void __set_PAC_KEY_P (uint32_t* pPacKey) {
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__ASM volatile (
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"ldr r1,[%0,#0]\n"
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"msr pac_key_p_0, r1\n"
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"ldr r1,[%0,#4]\n"
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"msr pac_key_p_1, r1\n"
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"ldr r1,[%0,#8]\n"
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"msr pac_key_p_2, r1\n"
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"ldr r1,[%0,#12]\n"
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"msr pac_key_p_3, r1\n"
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: : "r" (pPacKey) : "memory", "r1"
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);
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}
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/**
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\brief read the PAC key used for unprivileged mode
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\details Reads the PAC key stored in the PAC_KEY_U registers.
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\param [out] pPacKey 128bit PAC key
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*/
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__STATIC_FORCEINLINE void __get_PAC_KEY_U (uint32_t* pPacKey) {
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__ASM volatile (
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"mrs r1, pac_key_u_0\n"
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"str r1,[%0,#0]\n"
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"mrs r1, pac_key_u_1\n"
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"str r1,[%0,#4]\n"
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"mrs r1, pac_key_u_2\n"
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"str r1,[%0,#8]\n"
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"mrs r1, pac_key_u_3\n"
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"str r1,[%0,#12]\n"
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: : "r" (pPacKey) : "memory", "r1"
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);
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}
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/**
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\brief write the PAC key used for unprivileged mode
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\details writes the given PAC key to the PAC_KEY_U registers.
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\param [in] pPacKey 128bit PAC key
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*/
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__STATIC_FORCEINLINE void __set_PAC_KEY_U (uint32_t* pPacKey) {
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__ASM volatile (
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"ldr r1,[%0,#0]\n"
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"msr pac_key_u_0, r1\n"
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"ldr r1,[%0,#4]\n"
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"msr pac_key_u_1, r1\n"
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"ldr r1,[%0,#8]\n"
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"msr pac_key_u_2, r1\n"
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"ldr r1,[%0,#12]\n"
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"msr pac_key_u_3, r1\n"
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: : "r" (pPacKey) : "memory", "r1"
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);
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}
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#if (defined (__ARM_FEATURE_CMSE ) && (__ARM_FEATURE_CMSE == 3))
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/**
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\brief read the PAC key used for privileged mode (non-secure)
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\details Reads the PAC key stored in the non-secure PAC_KEY_P registers when in secure mode.
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\param [out] pPacKey 128bit PAC key
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*/
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__STATIC_FORCEINLINE void __TZ_get_PAC_KEY_P_NS (uint32_t* pPacKey) {
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__ASM volatile (
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"mrs r1, pac_key_p_0_ns\n"
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"str r1,[%0,#0]\n"
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"mrs r1, pac_key_p_1_ns\n"
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"str r1,[%0,#4]\n"
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"mrs r1, pac_key_p_2_ns\n"
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"str r1,[%0,#8]\n"
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"mrs r1, pac_key_p_3_ns\n"
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"str r1,[%0,#12]\n"
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: : "r" (pPacKey) : "memory", "r1"
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);
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}
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/**
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\brief write the PAC key used for privileged mode (non-secure)
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\details writes the given PAC key to the non-secure PAC_KEY_P registers when in secure mode.
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\param [in] pPacKey 128bit PAC key
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*/
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__STATIC_FORCEINLINE void __TZ_set_PAC_KEY_P_NS (uint32_t* pPacKey) {
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__ASM volatile (
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"ldr r1,[%0,#0]\n"
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"msr pac_key_p_0_ns, r1\n"
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"ldr r1,[%0,#4]\n"
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"msr pac_key_p_1_ns, r1\n"
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"ldr r1,[%0,#8]\n"
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"msr pac_key_p_2_ns, r1\n"
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"ldr r1,[%0,#12]\n"
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"msr pac_key_p_3_ns, r1\n"
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: : "r" (pPacKey) : "memory", "r1"
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);
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}
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/**
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\brief read the PAC key used for unprivileged mode (non-secure)
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\details Reads the PAC key stored in the non-secure PAC_KEY_U registers when in secure mode.
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\param [out] pPacKey 128bit PAC key
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*/
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__STATIC_FORCEINLINE void __TZ_get_PAC_KEY_U_NS (uint32_t* pPacKey) {
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__ASM volatile (
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"mrs r1, pac_key_u_0_ns\n"
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"str r1,[%0,#0]\n"
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"mrs r1, pac_key_u_1_ns\n"
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"str r1,[%0,#4]\n"
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"mrs r1, pac_key_u_2_ns\n"
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"str r1,[%0,#8]\n"
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"mrs r1, pac_key_u_3_ns\n"
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"str r1,[%0,#12]\n"
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: : "r" (pPacKey) : "memory", "r1"
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);
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}
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/**
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\brief write the PAC key used for unprivileged mode (non-secure)
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\details writes the given PAC key to the non-secure PAC_KEY_U registers when in secure mode.
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\param [in] pPacKey 128bit PAC key
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*/
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__STATIC_FORCEINLINE void __TZ_set_PAC_KEY_U_NS (uint32_t* pPacKey) {
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__ASM volatile (
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"ldr r1,[%0,#0]\n"
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"msr pac_key_u_0_ns, r1\n"
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"ldr r1,[%0,#4]\n"
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"msr pac_key_u_1_ns, r1\n"
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"ldr r1,[%0,#8]\n"
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"msr pac_key_u_2_ns, r1\n"
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"ldr r1,[%0,#12]\n"
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"msr pac_key_u_3_ns, r1\n"
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: : "r" (pPacKey) : "memory", "r1"
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);
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}
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#endif /* (defined (__ARM_FEATURE_CMSE ) && (__ARM_FEATURE_CMSE == 3)) */
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#endif /* (defined (__ARM_FEATURE_PAUTH) && (__ARM_FEATURE_PAUTH == 1)) */
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/*@} end of CMSIS_Core_PacKeyFunctions */
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#endif /* PAC_ARMV81_H */
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