/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1997 Berkeley Software Design, Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * 3. Berkeley Software Design Inc's name may not be used to endorse or * promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``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 BERKELEY SOFTWARE DESIGN INC 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. * * from: BSDI: wstate.h,v 1.4 1997/09/18 13:05:51 torek Exp * $FreeBSD$ */ #ifndef _MACHINE_WSTATE_H_ #define _MACHINE_WSTATE_H_ /* * Window state register bits * * There really are no bits per se, just the two fields WSTATE.NORMAL * and WSTATE.OTHER. The rest is up to software. * * We use WSTATE_NORMAL to represent user mode or kernel mode saves * (whichever is currently in effect) and WSTATE_OTHER to represent * user mode saves (only). * * Note that locore.s assumes this same bit layout (since the translation * from "bits" to "{spill,fill}_N_{normal,other}" is done in hardware). */ #define WSTATE_NORMAL_MASK 1 /* wstate normal minus transition */ #define WSTATE_OTHER_SHIFT 3 /* for wstate other / user */ #define WSTATE_OTHER_MASK /* wstate other minus nested */ \ (WSTATE_NORMAL_MASK << WSTATE_OTHER_SHIFT) #define WSTATE_KERNEL 0 /* normal kernel wstate */ #define WSTATE_USER_64 0 /* normal 64bit user wstate */ #define WSTATE_USER_32 1 /* normal 32bit user wstate */ #define WSTATE_TRANSITION 2 /* if set, force user window */ #define WSTATE_NESTED /* if set, spill must not fault */ \ (WSTATE_TRANSITION << WSTATE_OTHER_SHIFT) /* Values used by the PROM and (Open)Solaris */ #define WSTATE_PROM_KMIX 7 #define WSTATE_PROM_MASK 7 #endif /* !_MACHINE_WSTATE_H_ */ |