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author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2019-12-09 10:12:14 +0100 |
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committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2020-02-12 09:08:36 +0100 |
commit | f4dbf37dd432623c345f8e19f78a4eb01fcedb8b (patch) | |
tree | cb18eb86ccce8ab3fff22c9c4543ddaf9d93b183 /cpukit/score/src/configstackspacesize.c | |
parent | score: Simplify FP context allocation (diff) | |
download | rtems-f4dbf37dd432623c345f8e19f78a4eb01fcedb8b.tar.bz2 |
score: Simplify TLS area allocation
Use the stack area to allocate the TLS area.
Update #3835.
Diffstat (limited to 'cpukit/score/src/configstackspacesize.c')
-rw-r--r-- | cpukit/score/src/configstackspacesize.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/cpukit/score/src/configstackspacesize.c b/cpukit/score/src/configstackspacesize.c new file mode 100644 index 0000000000..4f0c24cee6 --- /dev/null +++ b/cpukit/score/src/configstackspacesize.c @@ -0,0 +1,54 @@ +/* + * 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/config.h> +#include <rtems/score/stack.h> +#include <rtems/score/tls.h> +#include <rtems/score/thread.h> + +uintptr_t rtems_configuration_get_stack_space_size( void ) +{ + uintptr_t space_size; + + space_size = _Stack_Space_size; + + /* + * In case we have a non-zero TLS size, then we need a TLS area for each + * thread. These areas are allocated within the stack area from the stack + * space. Ensure that the stack space is large enough to fulfill all requests + * known at configuration time (so excluding the unlimited option). It is not + * possible to estimate the TLS size in the configuration at compile-time. + * The TLS size is determined at application link-time. + */ + space_size += _Thread_Initial_thread_count * _TLS_Get_allocation_size(); + + return space_size; +} |