1 /* 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 #ident "$Id: psl.h,v 1.1.1.1 1993/09/29 06:09:21 briggs Exp $" 34 /* 35 * @(#)psl.h 7.2 (Berkeley) 5/4/91 36 */ 37 38 #ifndef PSL_C 39 /* 40 * MC68000 program status word 41 */ 42 43 #define PSL_C 0x0001 /* carry bit */ 44 #define PSL_V 0x0002 /* overflow bit */ 45 #define PSL_Z 0x0004 /* zero bit */ 46 #define PSL_N 0x0008 /* negative bit */ 47 #define PSL_X 0x0010 /* extend bit */ 48 #define PSL_ALLCC 0x001F /* all cc bits - unlikely */ 49 #define PSL_IPL0 0x0000 /* interrupt priority level 0 */ 50 #define PSL_IPL1 0x0100 /* interrupt priority level 1 */ 51 #define PSL_IPL2 0x0200 /* interrupt priority level 2 */ 52 #define PSL_IPL3 0x0300 /* interrupt priority level 3 */ 53 #define PSL_IPL4 0x0400 /* interrupt priority level 4 */ 54 #define PSL_IPL5 0x0500 /* interrupt priority level 5 */ 55 #define PSL_IPL6 0x0600 /* interrupt priority level 6 */ 56 #define PSL_IPL7 0x0700 /* interrupt priority level 7 */ 57 #define PSL_S 0x2000 /* supervisor enable bit */ 58 #define PSL_T 0x8000 /* trace enable bit */ 59 60 #define PSL_LOWIPL (PSL_S) 61 #define PSL_HIGHIPL (PSL_S | PSL_IPL7) 62 #define PSL_IPL (PSL_IPL7) 63 #define PSL_USER (0) 64 65 #define PSL_MBZ 0x58E0 /* must be zero bits */ 66 67 #define PSL_USERSET (0) 68 #define PSL_USERCLR (PSL_S | PSL_IPL7 | PSL_MBZ) 69 70 /* 71 * Macros to decode processor status word. 72 */ 73 #define USERMODE(ps) (((ps) & PSL_S) == 0) 74 #define BASEPRI(ps) (((ps) & PSL_IPL7) == 0) 75 #endif 76