1 /* $NetBSD: control.c,v 1.19 2001/09/05 13:21:09 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Adam Glass and Gordon W. Ross. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/param.h> 40 41 #include <machine/pte.h> 42 #include <sun3/sun3/control.h> 43 44 int 45 get_context() 46 { 47 return (get_control_byte(CONTEXT_REG) & CONTEXT_MASK); 48 } 49 50 void 51 set_context(c) 52 int c; 53 { 54 set_control_byte(CONTEXT_REG, (c & CONTEXT_MASK)); 55 } 56 57 u_int 58 get_pte(va) 59 vaddr_t va; 60 { 61 return (get_control_word(CONTROL_ADDR_BUILD(PGMAP_BASE, va))); 62 } 63 64 void 65 set_pte(va, pte) 66 vaddr_t va; 67 u_int pte; 68 { 69 set_control_word(CONTROL_ADDR_BUILD(PGMAP_BASE, va), pte); 70 } 71 72 int 73 get_segmap(va) 74 vaddr_t va; 75 { 76 return (get_control_byte(CONTROL_ADDR_BUILD(SEGMAP_BASE, va))); 77 } 78 79 void 80 set_segmap(va, sme) 81 vaddr_t va; 82 int sme; 83 { 84 set_control_byte(CONTROL_ADDR_BUILD(SEGMAP_BASE, va), sme); 85 } 86