/*
* Copyright (c) 2015 Petr Pavlu
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/** @addtogroup kernel_arm64_interrupt
* @{
*/
#ifndef KERN_arm64_ISTATE_H_
#define KERN_arm64_ISTATE_H_
#include <trace.h>
#ifdef KERNEL
#include <arch/istate_struct.h>
#include <arch/regutils.h>
#else /* KERNEL */
#include <libarch/istate_struct.h>
#include <libarch/regutils.h>
#endif /* KERNEL */
/** Set Program Counter member of given istate structure.
*
* @param istate istate structure
* @param retaddr new value of istate's PC member
*/
_NO_TRACE static inline void istate_set_retaddr(istate_t *istate,
uintptr_t retaddr)
{
istate->pc = retaddr;
}
/** Return true if exception happened while in userspace. */
_NO_TRACE static inline int istate_from_uspace(istate_t *istate)
{
return (istate->spsr & SPSR_MODE_MASK) >> SPSR_MODE_SHIFT ==
SPSR_MODE_ARM64_EL0T;
}
/** Return Program Counter member of given istate structure. */
_NO_TRACE static inline uintptr_t istate_get_pc(istate_t *istate)
{
return istate->pc;
}
/** Return Frame Pointer member of given istate structure. */
_NO_TRACE static inline uintptr_t istate_get_fp(istate_t *istate)
{
return istate->x29;
}
#endif
/** @}
*/