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/*
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (C) 2014, 2019 embedded brains GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/tls.h>
static uintptr_t _TLS_Allocation_size;
uintptr_t _TLS_Get_allocation_size( void )
{
uintptr_t size;
uintptr_t allocation_size;
uintptr_t alignment;
size = _TLS_Get_size();
if ( size == 0 ) {
return 0;
}
allocation_size = _TLS_Allocation_size;
if ( allocation_size == 0 ) {
allocation_size = _TLS_Heap_align_up( size );
alignment = _TLS_Heap_align_up( (uintptr_t) _TLS_Alignment );
/*
* The stack allocator does not support aligned allocations. Allocate
* enough to do the alignment manually.
*/
if ( alignment > CPU_HEAP_ALIGNMENT ) {
allocation_size += alignment;
}
allocation_size += _TLS_Get_thread_control_block_area_size( alignment );
#ifndef __i386__
allocation_size += sizeof(TLS_Dynamic_thread_vector);
#endif
_TLS_Allocation_size = allocation_size;
}
return allocation_size;
}
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