mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
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92 lines
4.4 KiB
C
92 lines
4.4 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 INC_PICOLIBC_FREERTOS_H
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#define INC_PICOLIBC_FREERTOS_H
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/* Use picolibc TLS support to allocate space for __thread variables,
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* initialize them at thread creation and set the TLS context at
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* thread switch time.
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*
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* See the picolibc TLS docs:
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* https://github.com/picolibc/picolibc/blob/main/doc/tls.md
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* for additional information. */
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#include <picotls.h>
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#define configUSE_C_RUNTIME_TLS_SUPPORT 1
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#define configTLS_BLOCK_TYPE void *
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#define picolibcTLS_SIZE ( ( portPOINTER_SIZE_TYPE ) _tls_size() )
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#define picolibcSTACK_ALIGNMENT_MASK ( ( portPOINTER_SIZE_TYPE ) portBYTE_ALIGNMENT_MASK )
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#if __PICOLIBC_MAJOR__ > 1 || __PICOLIBC_MINOR__ >= 8
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/* Picolibc 1.8 and newer have explicit alignment values provided
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* by the _tls_align() inline */
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#define picolibcTLS_ALIGNMENT_MASK ( ( portPOINTER_SIZE_TYPE ) ( _tls_align() - 1 ) )
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#else
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/* For older Picolibc versions, use the general port alignment value */
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#define picolibcTLS_ALIGNMENT_MASK ( ( portPOINTER_SIZE_TYPE ) portBYTE_ALIGNMENT_MASK )
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#endif
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/* Allocate thread local storage block off the end of the
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* stack. The picolibcTLS_SIZE macro returns the size (in
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* bytes) of the total TLS area used by the application.
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* Calculate the top of stack address. */
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#if ( portSTACK_GROWTH < 0 )
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#define configINIT_TLS_BLOCK( xTLSBlock, pxTopOfStack ) \
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do { \
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xTLSBlock = ( void * ) ( ( ( ( portPOINTER_SIZE_TYPE ) pxTopOfStack ) - \
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picolibcTLS_SIZE ) & \
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~picolibcTLS_ALIGNMENT_MASK ); \
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pxTopOfStack = ( StackType_t * ) ( ( ( ( portPOINTER_SIZE_TYPE ) xTLSBlock ) - 1 ) & \
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~picolibcSTACK_ALIGNMENT_MASK ); \
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_init_tls( xTLSBlock ); \
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} while( 0 )
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#else /* portSTACK_GROWTH */
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#define configINIT_TLS_BLOCK( xTLSBlock, pxTopOfStack ) \
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do { \
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xTLSBlock = ( void * ) ( ( ( portPOINTER_SIZE_TYPE ) pxTopOfStack + \
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picolibcTLS_ALIGNMENT_MASK ) & ~picolibcTLS_ALIGNMENT_MASK ); \
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pxTopOfStack = ( StackType_t * ) ( ( ( ( ( portPOINTER_SIZE_TYPE ) xTLSBlock ) + \
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picolibcTLS_SIZE ) + picolibcSTACK_ALIGNMENT_MASK ) & \
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~picolibcSTACK_ALIGNMENT_MASK ); \
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_init_tls( xTLSBlock ); \
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} while( 0 )
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#endif /* portSTACK_GROWTH */
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#define configSET_TLS_BLOCK( xTLSBlock ) _set_tls( xTLSBlock )
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#define configDEINIT_TLS_BLOCK( xTLSBlock )
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#endif /* INC_PICOLIBC_FREERTOS_H */
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