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* Copyright (c) 2007 Michal Kebrt, Petr Stepan
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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 arm32interrupt
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#ifndef KERN_arm32_ISTATE_H_
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#define KERN_arm32_ISTATE_H_
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#include <arch/regutils.h>
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#include <sys/types.h>
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/** Struct representing CPU state saved when an exception occurs. */
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typedef struct istate {
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/** Set Program Counter member of given istate structure.
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* @param istate istate structure
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* @param retaddr new value of istate's PC member
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NO_TRACE static inline void istate_set_retaddr(istate_t *istate,
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/** Return true if exception happened while in userspace. */
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NO_TRACE static inline int istate_from_uspace(istate_t *istate)
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return (istate->spsr & STATUS_REG_MODE_MASK) == USER_MODE;
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/** Return Program Counter member of given istate structure. */
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NO_TRACE static inline uintptr_t istate_get_pc(istate_t *istate)
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NO_TRACE static inline uintptr_t istate_get_fp(istate_t *istate)