* Copyright (c) 1999-2004 Michael Shalayeff

/* $NetBSD: trap.h,v 1.5 2021/09/06 21:56:03 andvar Exp $ */

/* $OpenBSD: trap.h,v 1.8 2000/02/10 20:05:39 mickey Exp $ */

/*
* Copyright (c) 1999-2004 Michael Shalayeff
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef _HPPA_TRAP_H_
#define _HPPA_TRAP_H_

/*
* This is PA-RISC trap types per 1.1 specs, see .c files for references.
*/
#define T_NONEXIST 0 /* invalid interrupt vector */
#define T_HPMC 1 /* high priority machine check */
#define T_POWERFAIL 2 /* power failure */
#define T_RECOVERY 3 /* recovery counter */
#define T_INTERRUPT 4 /* external interrupt */
#define T_LPMC 5 /* low-priority machine check */
#define T_ITLBMISS 6 /* instruction TLB miss fault */
#define T_IPROT 7 /* instruction protection */
#define T_ILLEGAL 8 /* Illegal instruction */
#define T_IBREAK 9 /* break instruction */
#define T_PRIV_OP 10 /* privileged operation */
#define T_PRIV_REG 11 /* privileged register */
#define T_OVERFLOW 12 /* overflow */
#define T_CONDITION 13 /* conditional */
#define T_EXCEPTION 14 /* assist exception */
#define T_DTLBMISS 15 /* data TLB miss */
#define T_ITLBMISSNA 16 /* ITLB non-access miss */
#define T_DTLBMISSNA 17 /* DTLB non-access miss */
#define T_DPROT 18 /* data protection/rights/alignment <7100 */
#define T_DBREAK 19 /* data memory break */
#define T_TLB_DIRTY 20 /* TLB dirty bit */
#define T_PAGEREF 21 /* page reference */
#define T_EMULATION 22 /* assist emulation */
#define T_HIGHERPL 23 /* higher-privilege transfer */
#define T_LOWERPL 24 /* lower-privilege transfer */
#define T_TAKENBR 25 /* taken branch */
#define T_DATACC 26 /* data access rights >=7100 */
#define T_DATAPID 27 /* data protection ID >=7100 */
#define T_DATALIGN 28 /* unaligned data ref */
#define T_PERFMON 29 /* performance monitor interrupt */
#define T_IDEBUG 30 /* debug SFU interrupt */
#define T_DDEBUG 31 /* debug SFU interrupt */

/*
* Reserved range for traps is 0-63, place user flag at 6th bit
*/
#define T_USER_POS 25
#define T_USER (1 << (31 - T_USER_POS))

/*
* Various trap frame flags.
*/
#define TFF_LAST_POS 0
#define TFF_ITLB_POS 1
#define TFF_SYS_POS 2
#define TFF_INTR_POS 3

#define TFF_LAST (1 << (31 - TFF_LAST_POS))
#define TFF_ITLB (1 << (31 - TFF_ITLB_POS))
#define TFF_SYS (1 << (31 - TFF_SYS_POS))
#define TFF_INTR (1 << (31 - TFF_INTR_POS))

/*
* Define this for pretty printings of trapflags.
*/
#define T_BITS "\020\07user\036intr\037itlb\040last"

/*
* These are break instruction entry points.
*/
/* im5 */
#define HPPA_BREAK_KERNEL 0
/* im13 */
#define HPPA_BREAK_SS 4
#define HPPA_BREAK_KGDB 5
#define HPPA_BREAK_GET_PSW 9
#define HPPA_BREAK_SET_PSW 10

/*
* break instruction decoding.
*/
#define break5(i) ((i) & 0x1f)
#define break13(i) (((i) >> 13) & 0x1fff)

#endif /* _HPPA_TRAP_H_ */