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) 82 extern const char * const trap_names[]; 83 #endif 84 85 #endif /* _MIPS_TRAP_H_ */ 86