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89 lines
3.3 KiB
C
89 lines
3.3 KiB
C
/**
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* Copyright (c) 2016 - 2017, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef NRF_SVC_FUNCTION_H__
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#define NRF_SVC_FUNCTION_H__
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#include <stdint.h>
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#include "section_vars.h"
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#include "app_util.h"
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#include "nrf_svci.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** @brief Function to be called from an SVC handler.
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*
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* @warning The function prototype must be limited to a maximum of four arguments, due to the nature of SVC calls.
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*/
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typedef uint32_t (*nrf_svc_func_t)();
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/** @brief Type holding the SVC number and the pointer to the corresponding function.
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*
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* Not that the function that is pointed to must not change version.
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*/
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typedef struct
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{
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uint32_t svc_num; /**< Supervisor call number (actually 8-bit, padded for alignment). */
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uint32_t svci_num; /**< Supervisor call indirect number. */
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nrf_svc_func_t func_ptr;
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} nrf_svc_func_reg_t;
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// Verify that the size of nrf_svc_func_t is aligned.
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STATIC_ASSERT(sizeof(nrf_svc_func_reg_t) % 4 == 0);
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/** @brief Macro for registering a structure holding SVC number and function pointer.
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*
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* @details This macro places the variable in a section named "svc_data" that
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the SVC handler uses during regular operation.
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*/
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#define SVC_REGISTER_FUNCTION(svc_var) NRF_SECTION_VARS_ADD(svc_data, svc_var)
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#ifdef __cplusplus
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}
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#endif
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#endif // NRF_SVC_FUNCTION_H__
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