1/*	$NetBSD: trap.h,v 1.19 2015/06/06 04:31:10 matt Exp $	*/
 2
 3/*
 4 * Copyright (c) 1988 University of Utah.
 5 * Copyright (c) 1992, 1993
 6 *	The Regents of the University of California.  All rights reserved.
 7 *
 8 * This code is derived from software contributed to Berkeley by
 9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department and Ralph Campbell.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: Utah Hdr: trap.h 1.1 90/07/09
37 *
38 *	@(#)trap.h	8.1 (Berkeley) 6/10/93
39 */
40
41/*
42 * Trap codes
43 * also known in trap.c for name strings
44 */
45#ifndef _MIPS_TRAP_H_
46#define	_MIPS_TRAP_H_
47
48#define	T_INT			0	/* Interrupt pending */
49#define	T_TLB_MOD		1	/* TLB modified fault */
50#define	T_TLB_LD_MISS		2	/* TLB miss on load or ifetch */
51#define	T_TLB_ST_MISS		3	/* TLB miss on a store */
52#define	T_ADDR_ERR_LD		4	/* Address error on a load or ifetch */
53#define	T_ADDR_ERR_ST		5	/* Address error on a store */
54#define	T_BUS_ERR_IFETCH	6	/* Bus error on an ifetch */
55#define	T_BUS_ERR_LD_ST		7	/* Bus error on a load or store */
56#define	T_SYSCALL		8	/* System call */
57#define	T_BREAK			9	/* Breakpoint */
58#define	T_RES_INST		10	/* Reserved instruction exception */
59#define	T_COP_UNUSABLE		11	/* Coprocessor unusable */
60#define	T_OVFLOW		12	/* Arithmetic overflow */
61
62/*
63 * Trap definitions added for r4000 port.
64 */
65#define	T_TRAP			13	/* Trap instruction */
66#define	T_VCEI			14	/* Virtual coherency exception */
67#define	T_FPE			15	/* Floating point exception */
68#define	T_NMI			16	/* Reserved so put NMI here */
69#define	T_TLBRI			19	/* TLB Read-Inhibit */
70#define	T_TLBXI			20	/* TLB Execute-Inhibit */
71#define	T_MDMX			22	/* MDMX Unusable exception */
72#define	T_WATCH			23	/* Watch address reference */
73#define	T_MCHECK		24	/* Machine Check exception */
74#define	T_THREAD		25	/* Thread exception */
75#define	T_DSP			26	/* DSP exception */
76#define	T_CACHE			30	/* Cache Error */
77#define	T_VCED			31	/* Virtual coherency data */
78
79#define	T_USER			0x20	/* user-mode flag or'ed with type */
80
81#if defined(_KERNEL) && !defined(_LOCORE)
82extern const char * const trap_names[];
83#endif
84
85#endif /* _MIPS_TRAP_H_ */