usr/src/sys/hp300/include/psl.h

/*
 * Copyright (c) 1982, 1986 Regents of the University of California.
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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.
 *
 *      @(#)psl.h       7.2 (Berkeley) 5/4/91
 */

#ifndef PSL_C
/*
 * MC68000 program status word
 */

#define PSL_C           0x0001          /* carry bit */
#define PSL_V           0x0002          /* overflow bit */
#define PSL_Z           0x0004          /* zero bit */
#define PSL_N           0x0008          /* negative bit */
#define PSL_X           0x0010          /* extend bit */
#define PSL_ALLCC       0x001F          /* all cc bits - unlikely */
#define PSL_IPL0        0x0000          /* interrupt priority level 0 */
#define PSL_IPL1        0x0100          /* interrupt priority level 1 */
#define PSL_IPL2        0x0200          /* interrupt priority level 2 */
#define PSL_IPL3        0x0300          /* interrupt priority level 3 */
#define PSL_IPL4        0x0400          /* interrupt priority level 4 */
#define PSL_IPL5        0x0500          /* interrupt priority level 5 */
#define PSL_IPL6        0x0600          /* interrupt priority level 6 */
#define PSL_IPL7        0x0700          /* interrupt priority level 7 */
#define PSL_S           0x2000          /* supervisor enable bit */
#define PSL_T           0x8000          /* trace enable bit */

#define PSL_LOWIPL      (PSL_S)
#define PSL_HIGHIPL     (PSL_S | PSL_IPL7)
#define PSL_IPL         (PSL_IPL7)
#define PSL_USER        (0)

#define PSL_MBZ         0x58E0          /* must be zero bits */

#define PSL_USERSET     (0)
#define PSL_USERCLR     (PSL_S | PSL_IPL7 | PSL_MBZ)

/*
 * Macros to decode processor status word.
 */
#define USERMODE(ps)    (((ps) & PSL_S) == 0)
#define BASEPRI(ps)     (((ps) & PSL_IPL7) == 0)
#endif