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_ */