/* * 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 /** @} */