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Annotation of Net2/arch/amiga/include/psl.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1982, 1986 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:  *     @(#)psl.h       7.2 (Berkeley) 5/4/91
                     34:  */
                     35: 
                     36: #ifndef PSL_C
                     37: /*
                     38:  * MC68000 program status word
                     39:  */
                     40: 
                     41: #define        PSL_C           0x0001          /* carry bit */
                     42: #define        PSL_V           0x0002          /* overflow bit */
                     43: #define        PSL_Z           0x0004          /* zero bit */
                     44: #define        PSL_N           0x0008          /* negative bit */
                     45: #define        PSL_X           0x0010          /* extend bit */
                     46: #define        PSL_ALLCC       0x001F          /* all cc bits - unlikely */
                     47: #define        PSL_IPL0        0x0000          /* interrupt priority level 0 */
                     48: #define        PSL_IPL1        0x0100          /* interrupt priority level 1 */
                     49: #define        PSL_IPL2        0x0200          /* interrupt priority level 2 */
                     50: #define        PSL_IPL3        0x0300          /* interrupt priority level 3 */
                     51: #define        PSL_IPL4        0x0400          /* interrupt priority level 4 */
                     52: #define        PSL_IPL5        0x0500          /* interrupt priority level 5 */
                     53: #define        PSL_IPL6        0x0600          /* interrupt priority level 6 */
                     54: #define        PSL_IPL7        0x0700          /* interrupt priority level 7 */
                     55: #define        PSL_S           0x2000          /* supervisor enable bit */
                     56: #define        PSL_T           0x8000          /* trace enable bit */
                     57: 
                     58: #define        PSL_LOWIPL      (PSL_S)
                     59: #define        PSL_HIGHIPL     (PSL_S | PSL_IPL7)
                     60: #define PSL_IPL                (PSL_IPL7)
                     61: #define        PSL_USER        (0)
                     62: 
                     63: #define        PSL_MBZ         0x58E0          /* must be zero bits */
                     64: 
                     65: #define        PSL_USERSET     (0)
                     66: #define        PSL_USERCLR     (PSL_S | PSL_IPL7 | PSL_MBZ)
                     67: 
                     68: /*
                     69:  * Macros to decode processor status word.
                     70:  */
                     71: #define        USERMODE(ps)    (((ps) & PSL_S) == 0)
                     72: #define        BASEPRI(ps)     (((ps) & PSL_IPL7) == 0)
                     73: #endif

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