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psl.h revision 1.14 
      1 /*	$NetBSD: psl.h,v 1.14 2000/07/11 06:26:08 jeffs Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Ralph Campbell.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the University of
     21  *	California, Berkeley and its contributors.
     22  * 4. Neither the name of the University nor the names of its contributors
     23  *    may be used to endorse or promote products derived from this software
     24  *    without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  *
     38  *	@(#)psl.h	8.1 (Berkeley) 6/10/93
     39  */
     40 
     41 /*
     42  * Define PSL_LOWIPL, PSL_USERSET, PSL_USERCLR, USERMODE, BASEPRI
     43  * for MI code, for MIPS1, MIPS3, or both, depending on the
     44  * configured CPU types.
     45  */
     46 
     47 #include <mips/cpuregs.h>
     48 
     49 /*
     50  * mips3-specific  definitions
     51  */
     52 #define	MIPS3_PSL_LOWIPL	(MIPS3_INT_MASK | MIPS_SR_INT_IE)
     53 
     54 #if defined(_MIPS_BSD_API) && _MIPS_BSD_API != _MIPS_BSD_API_LP32
     55 #define MIPS3_PSL_XFLAGS	(MIPS3_SR_XX | MIPS3_SR_UX)
     56 #else
     57 #define MIPS3_PSL_XFLAGS	(0)
     58 #endif
     59 
     60 #define	MIPS3_PSL_USERSET 	\
     61 	(MIPS3_SR_KSU_USER |	\
     62 	 MIPS3_PSL_XFLAGS |	\
     63 	 MIPS_SR_INT_IE |	\
     64 	 MIPS3_SR_EXL |		\
     65 	 MIPS3_INT_MASK)
     66 
     67 #define	MIPS3_USERMODE(ps) \
     68 	(((ps) & MIPS3_SR_KSU_MASK) == MIPS3_SR_KSU_USER)
     69 
     70 #define	MIPS3_BASEPRI(ps) \
     71 	(((ps) & (MIPS3_INT_MASK | MIPS_SR_INT_ENA_PREV)) \
     72 			== (MIPS3_INT_MASK | MIPS_SR_INT_ENA_PREV))
     73 
     74 
     75 /*
     76  * mips1-specific definitions
     77  */
     78 #define	MIPS1_PSL_LOWIPL	(MIPS_INT_MASK | MIPS_SR_INT_IE)
     79 
     80 #define	MIPS1_PSL_USERSET \
     81 	(MIPS1_SR_KU_OLD |	\
     82 	 MIPS1_SR_INT_ENA_OLD |	\
     83 	 MIPS1_SR_KU_PREV |	\
     84 	 MIPS1_SR_INT_ENA_PREV |\
     85 	 MIPS_INT_MASK)
     86 
     87 #define	MIPS1_USERMODE(ps) \
     88 	((ps) & MIPS1_SR_KU_PREV)
     89 
     90 #define	MIPS1_BASEPRI(ps) \
     91 		(((ps) & (MIPS_INT_MASK | MIPS1_SR_INT_ENA_PREV)) == \
     92 		 (MIPS_INT_MASK | MIPS1_SR_INT_ENA_PREV))
     93 
     94 
     95 /*
     96  * Choose mips3-only, mips1-only, or runtime-selected values.
     97  */
     98 
     99 #if defined(MIPS3) && !defined(MIPS1) /* mips3 only */
    100 # define  PSL_LOWIPL	MIPS3_PSL_LOWIPL
    101 # define  PSL_USERSET	MIPS3_PSL_USERSET
    102 # define  PSL_USERCLR	MIPS3_PSL_USERCLR
    103 # define  USERMODE(ps)	MIPS3_USERMODE(ps)
    104 # define  BASEPRI(ps)	MIPS3_BASEPRI(ps)
    105 #endif /* mips3 only */
    106 
    107 
    108 #if !defined(MIPS3) && defined(MIPS1) /* mips1 only */
    109 # define  PSL_LOWIPL	MIPS1_PSL_LOWIPL
    110 # define  PSL_USERSET	MIPS1_PSL_USERSET
    111 # define  USERMODE(ps)	MIPS1_USERMODE(ps)
    112 # define  BASEPRI(ps)	MIPS1_BASEPRI(ps)
    113 #endif /* mips1 only */
    114 
    115 
    116 #if  MIPS3 +  MIPS1 > 1
    117 # define PSL_LOWIPL \
    118 	(CPUISMIPS3 ? MIPS3_PSL_LOWIPL : MIPS1_PSL_LOWIPL)
    119 #define PSL_USERSET \
    120 	(CPUISMIPS3 ? MIPS3_PSL_USERSET : MIPS1_PSL_USERSET)
    121 # define USERMODE(ps) \
    122 	(CPUISMIPS3 ? MIPS3_USERMODE(ps) : MIPS1_USERMODE(ps))
    123 # define  BASEPRI(ps)	\
    124 	(CPUISMIPS3 ? MIPS3_BASEPRI(ps) : MIPS1_BASEPRI(ps))
    125 #endif
    126