/*      $NetBSD: psl.h,v 1.12 2010/12/14 23:29:02 matt Exp $      */

/*
* Rewritten for the VAX port. Based on Berkeley code. /IC
*
* 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. 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

/*
* VAX program status longword
*/

#define PSL_C           0x00000001      /* carry bit */
#define PSL_V           0x00000002      /* overflow bit */
#define PSL_Z           0x00000004      /* zero bit */
#define PSL_N           0x00000008      /* negative bit */
#define PSL_T           0x00000010      /* trace enable bit */
#define PSL_IV          0x00000020      /* integer overflow */
#define PSL_FU          0x00000040      /* floating underflow */
#define PSL_DV          0x00000080      /* decimal overflow */
#define PSL_IPL00       0x00000000      /* interrupt priority level 0 */
#define PSL_IPL01       0x00010000      /* interrupt priority level 1 */
#define PSL_IPL02       0x00020000      /* interrupt priority level 2 */
#define PSL_IPL03       0x00030000      /* interrupt priority level 3 */
#define PSL_IPL04       0x00040000      /* interrupt priority level 4 */
#define PSL_IPL05       0x00050000      /* interrupt priority level 5 */
#define PSL_IPL06       0x00060000      /* interrupt priority level 6 */
#define PSL_IPL07       0x00070000      /* interrupt priority level 7 */
#define PSL_IPL08       0x00080000      /* interrupt priority level 8 */
#define PSL_IPL09       0x00090000      /* interrupt priority level 9 */
#define PSL_IPL0A       0x000a0000      /* interrupt priority level 10 */
#define PSL_IPL0B       0x000b0000      /* interrupt priority level 11 */
#define PSL_IPL0C       0x000c0000      /* interrupt priority level 12 */
#define PSL_IPL0D       0x000d0000      /* interrupt priority level 13 */
#define PSL_IPL0E       0x000e0000      /* interrupt priority level 14 */
#define PSL_IPL0F       0x000f0000      /* interrupt priority level 15 */
#define PSL_IPL10       0x00100000      /* interrupt priority level 16 */
#define PSL_IPL11       0x00110000      /* interrupt priority level 17 */
#define PSL_IPL12       0x00120000      /* interrupt priority level 18 */
#define PSL_IPL13       0x00130000      /* interrupt priority level 19 */
#define PSL_IPL14       0x00140000      /* interrupt priority level 20 */
#define PSL_IPL15       0x00150000      /* interrupt priority level 21 */
#define PSL_IPL16       0x00160000      /* interrupt priority level 22 */
#define PSL_IPL17       0x00170000      /* interrupt priority level 23 */
#define PSL_IPL18       0x00180000      /* interrupt priority level 24 */
#define PSL_IPL19       0x00190000      /* interrupt priority level 25 */
#define PSL_IPL1A       0x001a0000      /* interrupt priority level 26 */
#define PSL_IPL1B       0x001b0000      /* interrupt priority level 27 */
#define PSL_IPL1C       0x001c0000      /* interrupt priority level 28 */
#define PSL_IPL1D       0x001d0000      /* interrupt priority level 29 */
#define PSL_IPL1E       0x001e0000      /* interrupt priority level 30 */
#define PSL_IPL1F       0x001f0000      /* interrupt priority level 31 */
#define PSL_PREVU       0x00c00000      /* Previous user mode */
#define PSL_K           0x00000000      /* kernel mode */
#define PSL_E           0x01000000      /* executive mode */
#define PSL_S           0x02000000      /* supervisor mode */
#define PSL_U           0x03000000      /* user mode */
#define PSL_IS          0x04000000      /* interrupt stack select */
#define PSL_FPD         0x08000000      /* first part done flag */
#define PSL_TP          0x40000000      /* trace pending */
#define PSL_CM          0x80000000      /* compatibility mode */

#define PSL_LOWIPL      (PSL_K)
#define PSL_HIGHIPL     (PSL_K | PSL_IPL1F)
#define PSL_IPL         (PSL_IPL1F)
#define PSL_USER        (0)

#define PSL_MBZ         0x3020ff00      /* must be zero bits */

#define PSL_USERSET     (0)
#define PSL_USERCLR     (PSL_S | PSL_IPL1F | PSL_MBZ)

/*
* Macros to decode processor status word.
*/
#define CLKF_USERMODE(framep)   (((framep)->ps & PSL_U) == PSL_U)
#define CLKF_PC(framep)         ((framep)->pc)
#define CLKF_INTR(framep)       (((framep)->ps & (PSL_IS|PSL_IPL1F)) \
                                   >= (PSL_IPL02|PSL_IS))
#define PSL2IPL(ps)             ((ps) >> 16)

#endif

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