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      1 /*	$NetBSD: trap.h,v 1.5 2021/09/06 21:56:03 andvar Exp $	*/
      2 
      3 /*	$OpenBSD: trap.h,v 1.8 2000/02/10 20:05:39 mickey Exp $	*/
      4 
      5 /*
      6  * Copyright (c) 1999-2004 Michael Shalayeff
      7  * All rights reserved.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
     22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     24  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
     27  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     28  * THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef	_HPPA_TRAP_H_
     32 #define	_HPPA_TRAP_H_
     33 
     34 /*
     35  * This is PA-RISC trap types per 1.1 specs, see .c files for references.
     36  */
     37 #define	T_NONEXIST	0	/* invalid interrupt vector */
     38 #define	T_HPMC		1	/* high priority machine check */
     39 #define	T_POWERFAIL	2	/* power failure */
     40 #define	T_RECOVERY	3	/* recovery counter */
     41 #define	T_INTERRUPT	4	/* external interrupt */
     42 #define	T_LPMC		5	/* low-priority machine check */
     43 #define	T_ITLBMISS	6	/* instruction TLB miss fault */
     44 #define	T_IPROT		7	/* instruction protection */
     45 #define	T_ILLEGAL	8	/* Illegal instruction */
     46 #define	T_IBREAK	9	/* break instruction */
     47 #define	T_PRIV_OP	10	/* privileged operation */
     48 #define	T_PRIV_REG	11	/* privileged register */
     49 #define	T_OVERFLOW	12	/* overflow */
     50 #define	T_CONDITION	13	/* conditional */
     51 #define	T_EXCEPTION	14	/* assist exception */
     52 #define	T_DTLBMISS	15	/* data TLB miss */
     53 #define	T_ITLBMISSNA	16	/* ITLB non-access miss */
     54 #define	T_DTLBMISSNA	17	/* DTLB non-access miss */
     55 #define	T_DPROT		18	/* data protection/rights/alignment <7100 */
     56 #define	T_DBREAK	19	/* data memory break */
     57 #define	T_TLB_DIRTY	20	/* TLB dirty bit */
     58 #define	T_PAGEREF	21	/* page reference */
     59 #define	T_EMULATION	22	/* assist emulation */
     60 #define	T_HIGHERPL	23	/* higher-privilege transfer */
     61 #define	T_LOWERPL	24	/* lower-privilege transfer */
     62 #define	T_TAKENBR	25	/* taken branch */
     63 #define	T_DATACC	26	/* data access rights >=7100 */
     64 #define	T_DATAPID	27	/* data protection ID >=7100 */
     65 #define	T_DATALIGN	28	/* unaligned data ref */
     66 #define	T_PERFMON	29	/* performance monitor interrupt */
     67 #define	T_IDEBUG	30	/* debug SFU interrupt */
     68 #define	T_DDEBUG	31	/* debug SFU interrupt */
     69 
     70 /*
     71  * Reserved range for traps is 0-63, place user flag at 6th bit
     72  */
     73 #define	T_USER_POS	25
     74 #define	T_USER		(1 << (31 - T_USER_POS))
     75 
     76 /*
     77  * Various trap frame flags.
     78  */
     79 #define	TFF_LAST_POS	0
     80 #define	TFF_ITLB_POS	1
     81 #define	TFF_SYS_POS	2
     82 #define	TFF_INTR_POS	3
     83 
     84 #define	TFF_LAST	(1 << (31 - TFF_LAST_POS))
     85 #define	TFF_ITLB	(1 << (31 - TFF_ITLB_POS))
     86 #define	TFF_SYS		(1 << (31 - TFF_SYS_POS))
     87 #define	TFF_INTR	(1 << (31 - TFF_INTR_POS))
     88 
     89 /*
     90  * Define this for pretty printings of trapflags.
     91  */
     92 #define	T_BITS	"\020\07user\036intr\037itlb\040last"
     93 
     94 /*
     95  * These are break instruction entry points.
     96  */
     97 /* im5 */
     98 #define	HPPA_BREAK_KERNEL	0
     99 /* im13 */
    100 #define	HPPA_BREAK_SS		4
    101 #define	HPPA_BREAK_KGDB		5
    102 #define	HPPA_BREAK_GET_PSW	9
    103 #define	HPPA_BREAK_SET_PSW	10
    104 
    105 /*
    106  * break instruction decoding.
    107  */
    108 #define	break5(i)	((i) & 0x1f)
    109 #define	break13(i)	(((i) >> 13) & 0x1fff)
    110 
    111 #endif	/* _HPPA_TRAP_H_ */
    112 
    113