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Diffstat (limited to 'cpukit/score/src/tlsallocsize.c')
-rw-r--r-- | cpukit/score/src/tlsallocsize.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/cpukit/score/src/tlsallocsize.c b/cpukit/score/src/tlsallocsize.c new file mode 100644 index 0000000000..046579814a --- /dev/null +++ b/cpukit/score/src/tlsallocsize.c @@ -0,0 +1,72 @@ +/* + * 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. + */ + +#if 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; +} |