66 lines
2.4 KiB
C
66 lines
2.4 KiB
C
/* $NetBSD: userret.h,v 1.14 2012/05/25 12:32:48 matt Exp $ */
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/*
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* Copyright (c) 1994 Ludd, University of Lule}, Sweden.
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* All rights reserved.
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*
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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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* are met:
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* 1. 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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* 2. 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed at Ludd, University of Lule}.
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* 4. 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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*
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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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*/
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#include <sys/userret.h>
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#include <sys/ras.h>
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/*
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* Common code used by various exception handlers to
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* return to usermode.
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*/
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static __inline void
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userret(struct lwp *l, struct trapframe *tf, u_quad_t oticks)
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{
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struct proc * const p = l->l_proc;
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mi_userret(l);
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/*
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* Check to see if a RAS was interrupted and restart it if it was.
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*/
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if (__predict_false(p->p_raslist != NULL)) {
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void * const ras_pc = ras_lookup(p, (void *) tf->tf_pc);
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if (ras_pc != (void *) -1)
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tf->tf_pc = (vaddr_t) ras_pc;
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}
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/*
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* If profiling, charge system time to the trapped pc.
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*/
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if ((p->p_stflag & PST_PROFIL) != 0) {
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extern int psratio;
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addupc_task(l, tf->tf_pc,
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(int)(p->p_sticks - oticks) * psratio);
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}
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}
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