Home | History | Annotate | Line # | Download | only in include
psl.h revision 1.1 
      1 /*	$NetBSD: psl.h,v 1.1 1996/09/30 16:34:32 ws Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
      5  * Copyright (C) 1995, 1996 TooLs GmbH.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by TooLs GmbH.
     19  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     28  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 #ifndef	_MACHINE_PSL_H_
     34 #define	_MACHINE_PSL_H_
     35 
     36 /*
     37  * Flags in MSR:
     38  */
     39 #define	PSL_POW		0x00040000
     40 #define	PSL_ILE		0x00010000
     41 #define	PSL_EE		0x00008000
     42 #define	PSL_PR		0x00004000
     43 #define	PSL_FP		0x00002000
     44 #define	PSL_ME		0x00001000
     45 #define	PSL_FE0		0x00000800
     46 #define	PSL_SE		0x00000400
     47 #define	PSL_BE		0x00000200
     48 #define	PSL_FE1		0x00000100
     49 #define	PSL_IP		0x00000040
     50 #define	PSL_IR		0x00000020
     51 #define	PSL_DR		0x00000010
     52 #define	PSL_RI		0x00000002
     53 #define	PSL_LE		0x00000001
     54 
     55 /*
     56  * Floating-point exception modes:
     57  */
     58 #define	PSL_FE_DIS	0
     59 #define	PSL_FE_NONREC	PSL_FE1
     60 #define	PSL_FE_REC	PSL_FE0
     61 #define	PSL_FE_PREC	(PSL_FE0 | PSL_FE1)
     62 #define	PSL_FE_DFLT	PSL_FE_DIS
     63 
     64 /*
     65  * Note that PSL_POW and PSL_ILE are not in the saved copy of the MSR
     66  */
     67 #define	PSL_MBO		0
     68 #define	PSL_MBZ		0
     69 
     70 #define	PSL_USERSET	(PSL_EE | PSL_PR | PSL_ME | PSL_IR | PSL_DR | PSL_RI)
     71 
     72 #define	PSL_USERSTATIC	(PSL_USERSET | PSL_IP | 0x87c0008c)
     73 
     74 
     75 #ifdef	_KERNEL
     76 /*
     77  * Current processor level.
     78  */
     79 #ifndef	_LOCORE
     80 extern int cpl;
     81 extern int clockpending, softclockpending, softnetpending;
     82 #endif
     83 #define	SPLBIO		0x01
     84 #define	SPLNET		0x02
     85 #define	SPLTTY		0x04
     86 #define	SPLIMP		0x08
     87 #define	SPLSOFTCLOCK	0x10
     88 #define	SPLSOFTNET	0x20
     89 #define	SPLCLOCK	0x80
     90 #define	SPLMACHINE	0x0f	/* levels handled by machine interface */
     91 
     92 #ifndef	_LOCORE
     93 extern int splx __P((int));
     94 
     95 extern int splraise __P((int));
     96 
     97 extern __inline int
     98 splhigh()
     99 {
    100 	return splraise(-1);
    101 }
    102 
    103 extern __inline int
    104 spl0()
    105 {
    106 	return splx(0);
    107 }
    108 
    109 extern __inline int
    110 splbio()
    111 {
    112 	return splraise(SPLBIO | SPLSOFTCLOCK | SPLSOFTNET);
    113 }
    114 
    115 extern __inline int
    116 splnet()
    117 {
    118 	return splraise(SPLNET | SPLSOFTCLOCK | SPLSOFTNET);
    119 }
    120 
    121 extern __inline int
    122 spltty()
    123 {
    124 	return splraise(SPLTTY | SPLSOFTCLOCK | SPLSOFTNET);
    125 }
    126 
    127 extern __inline int
    128 splimp()
    129 {
    130 	return splraise(SPLIMP | SPLSOFTCLOCK | SPLSOFTNET);
    131 }
    132 extern __inline int
    133 splclock()
    134 {
    135 	return splraise(SPLCLOCK | SPLSOFTCLOCK | SPLSOFTNET);
    136 }
    137 
    138 extern __inline int
    139 splsoftclock()
    140 {
    141 	return splraise(SPLSOFTCLOCK);
    142 }
    143 
    144 extern __inline int
    145 splsoftnet()
    146 {
    147 	return splraise(SPLSOFTNET);
    148 }
    149 
    150 extern __inline void
    151 setsoftclock()
    152 {
    153 	softclockpending = 1;
    154 	if (!(cpl & SPLSOFTCLOCK))
    155 		splx(cpl);
    156 }
    157 
    158 extern __inline void
    159 setsoftnet()
    160 {
    161 	softnetpending = 1;
    162 	if (!(cpl & SPLSOFTNET))
    163 		splx(cpl);
    164 }
    165 
    166 #endif	/* !_LOCORE */
    167 
    168 #define	splstatclock()		splclock()
    169 
    170 #endif	/* _KERNEL */
    171 #endif	/* _MACHINE_PSL_H_ */
    172