text: /* Copyright (c) 2016 Nordic Semiconductor. All Rights Reserved.
   *
   * The information contained herein is property of Nordic Semiconductor ASA.
   * Terms and conditions of usage are described in detail in NORDIC
   * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
   *
   * Licensees are granted free, non-transferable use of the information. NO
   * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
   * the file.
   *
   */
  
  #ifndef NRF_SVC_FUNCTION_H__
  #define NRF_SVC_FUNCTION_H__
  
  #include <stdint.h>
  #include "section_vars.h"
  #include "app_util.h"
  #include "nrf_svci.h"
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  
  /** @brief Function to be called from an SVC handler.
   *
   * @warning The function prototype must be limited to a maximum of four arguments, due to the nature of SVC calls.
   */
  typedef uint32_t (*nrf_svc_func_t)();
  
  /** @brief Type holding the SVC number and the pointer to the corresponding function.
   *
   * Not that the function that is pointed to must not change version.
   */
  typedef struct
  {
      uint32_t            svc_num;        /**< Supervisor call number (actually 8-bit, padded for alignment). */
      uint32_t            svci_num;       /**< Supervisor call indirect number. */
      nrf_svc_func_t      func_ptr;
  } nrf_svc_func_reg_t;
  
  
  // Verify that the size of nrf_svc_func_t is aligned.
  STATIC_ASSERT(sizeof(nrf_svc_func_reg_t) % 4 == 0);
  
  
  /** @brief  Macro for registering a structure holding SVC number and function pointer.
   *
   * @details     This macro places the variable in a section named "svc_data" that
                  the SVC handler uses during regular operation.
   */
  #define SVC_REGISTER_FUNCTION(svc_var) NRF_SECTION_VARS_ADD(svc_data, svc_var)
  
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif // NRF_SVC_FUNCTION_H__
  