FreeRTOS-RISCV/FreeRTOSv10.2.1/FreeRTOS/Demo/Common/ARMv8M/tz_demo/nsc_functions.c

60 lines
2.2 KiB
C

/*
* FreeRTOS Kernel V10.2.1
* Copyright (C) 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* http://www.FreeRTOS.org
* http://aws.amazon.com/freertos
*
* 1 tab == 4 spaces!
*/
#include <arm_cmse.h>
#include "nsc_functions.h"
#include "secure_port_macros.h"
/**
* @brief Counter returned from NSCFunction.
*/
static uint32_t ulSecureCounter = 0;
/**
* @brief typedef for non-secure callback.
*/
typedef void ( *NonSecureCallback_t ) ( void ) __attribute__( ( cmse_nonsecure_call ) );
/*-----------------------------------------------------------*/
secureportNON_SECURE_CALLABLE uint32_t NSCFunction( Callback_t pxCallback )
{
NonSecureCallback_t pxNonSecureCallback;
/* Return function pointer with cleared LSB. */
pxNonSecureCallback = ( NonSecureCallback_t ) cmse_nsfptr_create( pxCallback );
/* Invoke the supplied callback. */
pxNonSecureCallback();
/* Increment the secure side counter. */
ulSecureCounter += 1;
/* Return the secure side counter. */
return ulSecureCounter;
}
/*-----------------------------------------------------------*/