text: /*	$NetBSD: trap.h,v 1.1 2002/06/05 01:04:23 fredette Exp $	*/
  
  /*	$OpenBSD: trap.h,v 1.8 2000/02/10 20:05:39 mickey Exp $	*/
  
  /*
   * Copyright (c) 1999 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.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *      This product includes software developed by Michael Shalayeff.
   * 4. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * 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 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-privelege 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 */
  
  /*
   * 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_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_ */
  
  