1 /* $NetBSD: trap.h,v 1.13 2000/09/15 06:50:46 jeffs 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. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah Hdr: trap.h 1.1 90/07/09 41 * 42 * @(#)trap.h 8.1 (Berkeley) 6/10/93 43 */ 44 45 /* 46 * Trap codes 47 * also known in trap.c for name strings 48 */ 49 50 #define T_INT 0 /* Interrupt pending */ 51 #define T_TLB_MOD 1 /* TLB modified fault */ 52 #define T_TLB_LD_MISS 2 /* TLB miss on load or ifetch */ 53 #define T_TLB_ST_MISS 3 /* TLB miss on a store */ 54 #define T_ADDR_ERR_LD 4 /* Address error on a load or ifetch */ 55 #define T_ADDR_ERR_ST 5 /* Address error on a store */ 56 #define T_BUS_ERR_IFETCH 6 /* Bus error on an ifetch */ 57 #define T_BUS_ERR_LD_ST 7 /* Bus error on a load or store */ 58 #define T_SYSCALL 8 /* System call */ 59 #define T_BREAK 9 /* Breakpoint */ 60 #define T_RES_INST 10 /* Reserved instruction exception */ 61 #define T_COP_UNUSABLE 11 /* Coprocessor unusable */ 62 #define T_OVFLOW 12 /* Arithmetic overflow */ 63 64 /* 65 * Trap definitions added for r4000 port. 66 */ 67 #define T_TRAP 13 /* Trap instruction */ 68 #define T_VCEI 14 /* Virtual coherency exception */ 69 #define T_FPE 15 /* Floating point exception */ 70 #define T_WATCH 23 /* Watch address reference */ 71 #define T_VCED 31 /* Virtual coherency data */ 72 73 #define T_USER 0x20 /* user-mode flag or'ed with type */ 74