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trap.h revision 1.2 
      1 /*
      2  * Copyright (c) 1988 University of Utah.
      3  * Copyright (c) 1992, 1993
      4  *	The Regents of the University of California.  All rights reserved.
      5  *
      6  * This code is derived from software contributed to Berkeley by
      7  * the Systems Programming Group of the University of Utah Computer
      8  * Science Department and 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  * from: Utah Hdr: trap.h 1.1 90/07/09
     39  *
     40  *	from: @(#)trap.h	8.1 (Berkeley) 6/10/93
     41  *      $Id: trap.h,v 1.2 1994/05/27 08:41:13 glass Exp $
     42  */
     43 
     44 /*
     45  * Trap codes
     46  * also known in trap.c for name strings
     47  */
     48 
     49 #define T_INT			0	/* Interrupt pending */
     50 #define T_TLB_MOD		1	/* TLB modified fault */
     51 #define T_TLB_LD_MISS		2	/* TLB miss on load or ifetch */
     52 #define T_TLB_ST_MISS		3	/* TLB miss on a store */
     53 #define T_ADDR_ERR_LD		4	/* Address error on a load or ifetch */
     54 #define T_ADDR_ERR_ST		5	/* Address error on a store */
     55 #define T_BUS_ERR_IFETCH	6	/* Bus error on an ifetch */
     56 #define T_BUS_ERR_LD_ST		7	/* Bus error on a load or store */
     57 #define T_SYSCALL		8	/* System call */
     58 #define T_BREAK			9	/* Breakpoint */
     59 #define T_RES_INST		10	/* Reserved instruction exception */
     60 #define T_COP_UNUSABLE		11	/* Coprocessor unusable */
     61 #define T_OVFLOW		12	/* Arithmetic overflow */
     62 
     63 #define	T_USER			0x10	/* user-mode flag or'ed with type */
     64