75 lines
3.1 KiB
C
75 lines
3.1 KiB
C
/*
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* Copyright (c) 1982, 1986 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)psl.h 7.2 (Berkeley) 5/4/91
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* $Id: psl.h,v 1.2 1993/08/01 19:23:41 mycroft Exp $
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*/
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#ifndef PSL_C
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/*
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* MC68000 program status word
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*/
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#define PSL_C 0x0001 /* carry bit */
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#define PSL_V 0x0002 /* overflow bit */
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#define PSL_Z 0x0004 /* zero bit */
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#define PSL_N 0x0008 /* negative bit */
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#define PSL_X 0x0010 /* extend bit */
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#define PSL_ALLCC 0x001F /* all cc bits - unlikely */
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#define PSL_IPL0 0x0000 /* interrupt priority level 0 */
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#define PSL_IPL1 0x0100 /* interrupt priority level 1 */
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#define PSL_IPL2 0x0200 /* interrupt priority level 2 */
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#define PSL_IPL3 0x0300 /* interrupt priority level 3 */
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#define PSL_IPL4 0x0400 /* interrupt priority level 4 */
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#define PSL_IPL5 0x0500 /* interrupt priority level 5 */
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#define PSL_IPL6 0x0600 /* interrupt priority level 6 */
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#define PSL_IPL7 0x0700 /* interrupt priority level 7 */
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#define PSL_S 0x2000 /* supervisor enable bit */
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#define PSL_T 0x8000 /* trace enable bit */
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#define PSL_LOWIPL (PSL_S)
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#define PSL_HIGHIPL (PSL_S | PSL_IPL7)
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#define PSL_IPL (PSL_IPL7)
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#define PSL_USER (0)
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#define PSL_MBZ 0x58E0 /* must be zero bits */
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#define PSL_USERSET (0)
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#define PSL_USERCLR (PSL_S | PSL_IPL7 | PSL_MBZ)
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/*
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* Macros to decode processor status word.
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*/
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#define USERMODE(ps) (((ps) & PSL_S) == 0)
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#define BASEPRI(ps) (((ps) & PSL_IPL7) == 0)
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#endif
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