trap.h revision 178172
1120878Sphk/* $OpenBSD: trap.h,v 1.3 1999/01/27 04:46:06 imp Exp $ */ 2120878Sphk 3120878Sphk/*- 4120878Sphk * Copyright (c) 1988 University of Utah. 5120878Sphk * Copyright (c) 1992, 1993 6120878Sphk * The Regents of the University of California. All rights reserved. 7120878Sphk * 8120878Sphk * This code is derived from software contributed to Berkeley by 9120878Sphk * the Systems Programming Group of the University of Utah Computer 10120878Sphk * Science Department and Ralph Campbell. 11120878Sphk * 12120878Sphk * Redistribution and use in source and binary forms, with or without 13120878Sphk * modification, are permitted provided that the following conditions 14120878Sphk * are met: 15120878Sphk * 1. Redistributions of source code must retain the above copyright 16120878Sphk * notice, this list of conditions and the following disclaimer. 17120878Sphk * 2. Redistributions in binary form must reproduce the above copyright 18120878Sphk * notice, this list of conditions and the following disclaimer in the 19120878Sphk * documentation and/or other materials provided with the distribution. 20120878Sphk * 4. Neither the name of the University nor the names of its contributors 21120878Sphk * may be used to endorse or promote products derived from this software 22120878Sphk * without specific prior written permission. 23120878Sphk * 24120878Sphk * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25120878Sphk * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26120878Sphk * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27120878Sphk * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28120878Sphk * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29120878Sphk * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30120878Sphk * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31120878Sphk * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32120878Sphk * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33120878Sphk * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34120878Sphk * SUCH DAMAGE. 35120878Sphk * 36120878Sphk * from: Utah Hdr: trap.h 1.1 90/07/09 37120878Sphk * from: @(#)trap.h 8.1 (Berkeley) 6/10/93 38120878Sphk * JNPR: trap.h,v 1.3 2006/12/02 09:53:41 katta 39120878Sphk * $FreeBSD: head/sys/mips/include/trap.h 178172 2008-04-13 07:27:37Z imp $ 40120878Sphk */ 41120878Sphk 42120878Sphk#ifndef _MACHINE_TRAP_H_ 43120878Sphk#define _MACHINE_TRAP_H_ 44120878Sphk 45120878Sphk/* 46120878Sphk * Trap codes also known in trap.c for name strings. 47120878Sphk * Used for indexing so modify with care. 48120878Sphk */ 49120878Sphk 50120878Sphk#define T_INT 0 /* Interrupt pending */ 51120878Sphk#define T_TLB_MOD 1 /* TLB modified fault */ 52120878Sphk#define T_TLB_LD_MISS 2 /* TLB miss on load or ifetch */ 53120878Sphk#define T_TLB_ST_MISS 3 /* TLB miss on a store */ 54120878Sphk#define T_ADDR_ERR_LD 4 /* Address error on a load or ifetch */ 55120878Sphk#define T_ADDR_ERR_ST 5 /* Address error on a store */ 56120878Sphk#define T_BUS_ERR_IFETCH 6 /* Bus error on an ifetch */ 57120878Sphk#define T_BUS_ERR_LD_ST 7 /* Bus error on a load or store */ 58120878Sphk#define T_SYSCALL 8 /* System call */ 59120878Sphk#define T_BREAK 9 /* Breakpoint */ 60120878Sphk#define T_RES_INST 10 /* Reserved instruction exception */ 61120878Sphk#define T_COP_UNUSABLE 11 /* Coprocessor unusable */ 62120878Sphk#define T_OVFLOW 12 /* Arithmetic overflow */ 63120878Sphk#define T_TRAP 13 /* Trap instruction */ 64120878Sphk#define T_VCEI 14 /* Virtual coherency instruction */ 65120878Sphk#define T_FPE 15 /* Floating point exception */ 66120878Sphk#define T_IWATCH 16 /* Inst. Watch address reference */ 67120878Sphk#define T_C2E 18 /* Exception from coprocessor 2 */ 68120878Sphk#define T_DWATCH 23 /* Data Watch address reference */ 69120878Sphk#define T_MCHECK 24 /* Received an MCHECK */ 70120878Sphk#define T_VCED 31 /* Virtual coherency data */ 71120878Sphk 72120878Sphk#define T_USER 0x20 /* user-mode flag or'ed with type */ 73120878Sphk 74120878Sphk#if !defined(SMP) && (defined(DDB) || defined(DEBUG)) 75120878Sphk 76120878Sphkstruct trapdebug { /* trap history buffer for debugging */ 77120878Sphk u_int status; 78120878Sphk u_int cause; 79120878Sphk u_int vadr; 80120878Sphk u_int pc; 81120878Sphk u_int ra; 82120878Sphk u_int sp; 83120878Sphk u_int code; 84120878Sphk}; 85120878Sphk 86120878Sphk#define trapdebug_enter(x, cd) { \ 87120878Sphk intrmask_t s = disableintr(); \ 88120878Sphk trp->status = x->sr; \ 89120878Sphk trp->cause = x->cause; \ 90120878Sphk trp->vadr = x->badvaddr; \ 91120878Sphk trp->pc = x->pc; \ 92120878Sphk trp->sp = x->sp; \ 93120878Sphk trp->ra = x->ra; \ 94120878Sphk trp->code = cd; \ 95120878Sphk if (++trp == &trapdebug[TRAPSIZE]) \ 96120878Sphk trp = trapdebug; \ 97120878Sphk restoreintr(s); \ 98120878Sphk} 99120878Sphk 100120878Sphk#define TRAPSIZE 10 /* Trap log buffer length */ 101120878Sphkextern struct trapdebug trapdebug[TRAPSIZE], *trp; 102120878Sphk 103120878Sphkvoid trapDump(char *msg); 104120878Sphk 105120878Sphk#else 106120878Sphk 107120878Sphk#define trapdebug_enter(x, cd) 108120878Sphk 109120878Sphk#endif 110120878Sphk 111120878Sphk#ifndef LOCORE /* XXX */ 112120878Sphkint check_address(void *); 113120878Sphkvoid platform_trap_enter(void); 114120878Sphkvoid platform_trap_exit(void); 115120878Sphk#endif 116120878Sphk 117120878Sphk#endif /* !_MACHINE_TRAP_H_ */ 118120878Sphk