sys/arch/vax/include/userret.h

   1 /*      $NetBSD: userret.h,v 1.10 2008/10/15 06:51:19 wrstuden Exp $    */
   2
   3 /*
   4  * Copyright (c) 1994 Ludd, University of Lule}, Sweden.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *     This product includes software developed at Ludd, University of Lule}.
  18  * 4. The name of the author may not be used to endorse or promote products
  19  *    derived from this software without specific prior written permission
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/userret.h>
  34
  35 /*
  36  *      Common code used by various execption handlers to
  37  *      return to usermode.
  38  */
  39 static __inline void
  40 userret(struct lwp *l, struct trapframe *frame, u_quad_t oticks)
  41 {
  42         struct proc *p = l->l_proc;
  43
  44         mi_userret(l);
  45
  46         /*
  47          * If profiling, charge system time to the trapped pc.
  48          */
  49         if ((p->p_stflag & PST_PROFIL) != 0) {
  50                 extern int psratio;
  51
  52                 addupc_task(l, frame->pc,
  53                     (int)(p->p_sticks - oticks) * psratio);
  54         }
  55 }