mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-04-19 13:01:57 -04:00
141 lines
4.6 KiB
C
141 lines
4.6 KiB
C
/*
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* FreeRTOS Kernel <DEVELOPMENT BRANCH>
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* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* https://www.FreeRTOS.org
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* https://github.com/FreeRTOS
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*
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*/
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#ifndef __SECURE_PORT_MACROS_H__
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#define __SECURE_PORT_MACROS_H__
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/**
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* @brief Byte alignment requirements.
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*/
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#define secureportBYTE_ALIGNMENT 8
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#define secureportBYTE_ALIGNMENT_MASK ( 0x0007 )
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/**
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* @brief Macro to declare a function as non-secure callable.
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*/
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#if defined( __IAR_SYSTEMS_ICC__ )
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#define secureportNON_SECURE_CALLABLE __cmse_nonsecure_entry __root
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#else
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#define secureportNON_SECURE_CALLABLE __attribute__( ( cmse_nonsecure_entry ) ) __attribute__( ( used ) )
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#endif
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/**
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* @brief Set the secure PRIMASK value.
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*/
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#define secureportSET_SECURE_PRIMASK( ulPrimaskValue ) \
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__asm volatile ( "msr primask, %0" : : "r" ( ulPrimaskValue ) : "memory" )
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/**
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* @brief Set the non-secure PRIMASK value.
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*/
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#define secureportSET_NON_SECURE_PRIMASK( ulPrimaskValue ) \
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__asm volatile ( "msr primask_ns, %0" : : "r" ( ulPrimaskValue ) : "memory" )
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/**
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* @brief Read the PSP value in the given variable.
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*/
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#define secureportREAD_PSP( pucOutCurrentStackPointer ) \
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__asm volatile ( "mrs %0, psp" : "=r" ( pucOutCurrentStackPointer ) )
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/**
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* @brief Set the PSP to the given value.
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*/
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#define secureportSET_PSP( pucCurrentStackPointer ) \
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__asm volatile ( "msr psp, %0" : : "r" ( pucCurrentStackPointer ) )
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/**
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* @brief Read the PSPLIM value in the given variable.
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*/
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#define secureportREAD_PSPLIM( pucOutStackLimit ) \
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__asm volatile ( "mrs %0, psplim" : "=r" ( pucOutStackLimit ) )
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/**
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* @brief Set the PSPLIM to the given value.
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*/
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#define secureportSET_PSPLIM( pucStackLimit ) \
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__asm volatile ( "msr psplim, %0" : : "r" ( pucStackLimit ) )
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/**
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* @brief Set the NonSecure MSP to the given value.
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*/
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#define secureportSET_MSP_NS( pucMainStackPointer ) \
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__asm volatile ( "msr msp_ns, %0" : : "r" ( pucMainStackPointer ) )
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/**
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* @brief Set the CONTROL register to the given value.
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*/
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#define secureportSET_CONTROL( ulControl ) \
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__asm volatile ( "msr control, %0" : : "r" ( ulControl ) : "memory" )
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/**
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* @brief Read the Interrupt Program Status Register (IPSR) value in the given
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* variable.
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*/
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#define secureportREAD_IPSR( ulIPSR ) \
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__asm volatile ( "mrs %0, ipsr" : "=r" ( ulIPSR ) )
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/**
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* @brief PRIMASK value to enable interrupts.
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*/
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#define secureportPRIMASK_ENABLE_INTERRUPTS_VAL 0
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/**
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* @brief PRIMASK value to disable interrupts.
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*/
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#define secureportPRIMASK_DISABLE_INTERRUPTS_VAL 1
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/**
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* @brief Disable secure interrupts.
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*/
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#define secureportDISABLE_SECURE_INTERRUPTS() secureportSET_SECURE_PRIMASK( secureportPRIMASK_DISABLE_INTERRUPTS_VAL )
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/**
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* @brief Disable non-secure interrupts.
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*
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* This effectively disables context switches.
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*/
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#define secureportDISABLE_NON_SECURE_INTERRUPTS() secureportSET_NON_SECURE_PRIMASK( secureportPRIMASK_DISABLE_INTERRUPTS_VAL )
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/**
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* @brief Enable non-secure interrupts.
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*/
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#define secureportENABLE_NON_SECURE_INTERRUPTS() secureportSET_NON_SECURE_PRIMASK( secureportPRIMASK_ENABLE_INTERRUPTS_VAL )
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/**
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* @brief Assert definition.
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*/
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#define secureportASSERT( x ) \
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if( ( x ) == 0 ) \
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{ \
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secureportDISABLE_SECURE_INTERRUPTS(); \
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secureportDISABLE_NON_SECURE_INTERRUPTS(); \
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for( ; ; ) {; } \
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}
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#endif /* __SECURE_PORT_MACROS_H__ */
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