projects / unix-history / blame
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1 | /* |
| 2 | * Copyright (c) 1982, 1986 Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| c0567266 KB |
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. | |
| af359dea C |
32 | * |
| 33 | * @(#)psl.h 7.2 (Berkeley) 5/4/91 | |
| 88a7e859 KM |
34 | */ |
| 35 | ||
| af359dea | 36 | #ifndef PSL_C |
| 88a7e859 KM |
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) | |
| af359dea C |
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 |