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* Copyright (c) 2007 Michal Kebrt
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* - The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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/** @addtogroup libcarm32
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* @brief Fibrils related declarations.
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#ifndef LIBC_arm32_FIBRIL_H_
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#define LIBC_arm32_FIBRIL_H_
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#include <sys/types.h>
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/** Size of a stack item */
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#define STACK_ITEM_SIZE 4
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/** Stack alignment - see <a href="http://www.arm.com/support/faqdev/14269.html">ABI</a> for details */
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#define STACK_ALIGNMENT 8
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#define SP_DELTA (0 + ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT))
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/** Sets data to the context.
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* @param c Context (#context_t).
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* @param _pc Program counter.
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* @param stack Stack address.
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* @param size Stack size.
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* @param ptls Pointer to the TCB.
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#define context_set(c, _pc, stack, size, ptls) \
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(c)->pc = (sysarg_t) (_pc); \
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(c)->sp = ((sysarg_t) (stack)) + (size) - SP_DELTA; \
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(c)->tls = ((sysarg_t)(ptls)) + sizeof(tcb_t) + ARM_TP_OFFSET;
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* Only registers preserved accross function calls are included. r9 is used
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* to store a TLS address. -ffixed-r9 gcc forces gcc not to use this
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* register. -mtp=soft forces gcc to use #__aeabi_read_tp to obtain