1/* $NetBSD: userret.h,v 1.15 2017/05/22 17:12:11 ragge 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28#include <sys/userret.h> 29#include <sys/ras.h> 30 31/* 32 * Common code used by various exception handlers to 33 * return to usermode. 34 */ 35static __inline void 36userret(struct lwp *l, struct trapframe *tf, u_quad_t oticks) 37{ 38 struct proc * const p = l->l_proc; 39 40 mi_userret(l); 41 42 /* 43 * Check to see if a RAS was interrupted and restart it if it was. 44 */ 45 if (__predict_false(p->p_raslist != NULL)) { 46 void * const ras_pc = ras_lookup(p, (void *) tf->tf_pc); 47 if (ras_pc != (void *) -1) 48 tf->tf_pc = (vaddr_t) ras_pc; 49 } 50 51 /* 52 * If profiling, charge system time to the trapped pc. 53 */ 54 if ((p->p_stflag & PST_PROFIL) != 0) { 55 extern int psratio; 56 57 addupc_task(l, tf->tf_pc, 58 (int)(p->p_sticks - oticks) * psratio); 59 } 60} 61