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Paul Bartell 2022-11-29 10:36:04 -08:00 • committed by Paul Bartell
parent 151fb04ad1
commit 01820d3ed9
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portable/ThirdParty/XCC/Xtensa/xtensa_overlay_os_hook.c vendored
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/*
* FreeRTOS Kernel <DEVELOPMENT BRANCH>
* Copyright (C) 2015-2019 Cadence Design Systems, Inc.
* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* SPDX-License-Identifier: MIT
*
* 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.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
*/
/*
* xtensa_overlay_os_hook.c -- Overlay manager OS hooks for FreeRTOS.
*/
#include "FreeRTOS.h"
#include "semphr.h"
#if configUSE_MUTEX
/* Mutex object that controls access to the overlay. Currently only one
* overlay region is supported so one mutex suffices.
*/
static SemaphoreHandle_t xt_overlay_mutex;
/* This function should be overridden to provide OS specific init such
* as the creation of a mutex lock that can be used for overlay locking.
* Typically this mutex would be set up with priority inheritance. See
* overlay manager documentation for more details.
*/
void xt_overlay_init_os(void)
{
/* Create the mutex for overlay access. Priority inheritance is
* required.
*/
xt_overlay_mutex = xSemaphoreCreateMutex();
}
/* This function locks access to shared overlay resources, typically
* by acquiring a mutex.
*/
void xt_overlay_lock(void)
{
xSemaphoreTake(xt_overlay_mutex, 0);
}
/* This function releases access to shared overlay resources, typically
* by unlocking a mutex.
*/
void xt_overlay_unlock(void)
{
xSemaphoreGive(xt_overlay_mutex);
}
#endif
/*
* FreeRTOS Kernel <DEVELOPMENT BRANCH>
* Copyright (C) 2015-2019 Cadence Design Systems, Inc.
* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* SPDX-License-Identifier: MIT
*
* 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.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
*/
/*
* xtensa_overlay_os_hook.c -- Overlay manager OS hooks for FreeRTOS.
*/
#include "FreeRTOS.h"
#include "semphr.h"
#if configUSE_MUTEX
/* Mutex object that controls access to the overlay. Currently only one
* overlay region is supported so one mutex suffices.
*/
static SemaphoreHandle_t xt_overlay_mutex;
/* This function should be overridden to provide OS specific init such
* as the creation of a mutex lock that can be used for overlay locking.
* Typically this mutex would be set up with priority inheritance. See
* overlay manager documentation for more details.
*/
void xt_overlay_init_os(void)
{
/* Create the mutex for overlay access. Priority inheritance is
* required.
*/
xt_overlay_mutex = xSemaphoreCreateMutex();
}
/* This function locks access to shared overlay resources, typically
* by acquiring a mutex.
*/
void xt_overlay_lock(void)
{
xSemaphoreTake(xt_overlay_mutex, 0);
}
/* This function releases access to shared overlay resources, typically
* by unlocking a mutex.
*/
void xt_overlay_unlock(void)
{
xSemaphoreGive(xt_overlay_mutex);
}
#endif