1178172Simp/* $OpenBSD: trap.h,v 1.3 1999/01/27 04:46:06 imp Exp $ */ 2178172Simp 3178172Simp/*- 4178172Simp * Copyright (c) 1988 University of Utah. 5178172Simp * Copyright (c) 1992, 1993 6178172Simp * The Regents of the University of California. All rights reserved. 7178172Simp * 8178172Simp * This code is derived from software contributed to Berkeley by 9178172Simp * the Systems Programming Group of the University of Utah Computer 10178172Simp * Science Department and Ralph Campbell. 11178172Simp * 12178172Simp * Redistribution and use in source and binary forms, with or without 13178172Simp * modification, are permitted provided that the following conditions 14178172Simp * are met: 15178172Simp * 1. Redistributions of source code must retain the above copyright 16178172Simp * notice, this list of conditions and the following disclaimer. 17178172Simp * 2. Redistributions in binary form must reproduce the above copyright 18178172Simp * notice, this list of conditions and the following disclaimer in the 19178172Simp * documentation and/or other materials provided with the distribution. 20178172Simp * 4. Neither the name of the University nor the names of its contributors 21178172Simp * may be used to endorse or promote products derived from this software 22178172Simp * without specific prior written permission. 23178172Simp * 24178172Simp * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25178172Simp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26178172Simp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27178172Simp * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28178172Simp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29178172Simp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30178172Simp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31178172Simp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32178172Simp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33178172Simp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34178172Simp * SUCH DAMAGE. 35178172Simp * 36178172Simp * from: Utah Hdr: trap.h 1.1 90/07/09 37178172Simp * from: @(#)trap.h 8.1 (Berkeley) 6/10/93 38178172Simp * JNPR: trap.h,v 1.3 2006/12/02 09:53:41 katta 39178172Simp * $FreeBSD: releng/11.0/sys/mips/include/trap.h 232853 2012-03-12 07:34:15Z jmallett $ 40178172Simp */ 41178172Simp 42178172Simp#ifndef _MACHINE_TRAP_H_ 43178172Simp#define _MACHINE_TRAP_H_ 44178172Simp 45178172Simp/* 46178172Simp * Trap codes also known in trap.c for name strings. 47178172Simp * Used for indexing so modify with care. 48178172Simp */ 49178172Simp 50178172Simp#define T_INT 0 /* Interrupt pending */ 51178172Simp#define T_TLB_MOD 1 /* TLB modified fault */ 52178172Simp#define T_TLB_LD_MISS 2 /* TLB miss on load or ifetch */ 53178172Simp#define T_TLB_ST_MISS 3 /* TLB miss on a store */ 54178172Simp#define T_ADDR_ERR_LD 4 /* Address error on a load or ifetch */ 55178172Simp#define T_ADDR_ERR_ST 5 /* Address error on a store */ 56178172Simp#define T_BUS_ERR_IFETCH 6 /* Bus error on an ifetch */ 57178172Simp#define T_BUS_ERR_LD_ST 7 /* Bus error on a load or store */ 58178172Simp#define T_SYSCALL 8 /* System call */ 59178172Simp#define T_BREAK 9 /* Breakpoint */ 60178172Simp#define T_RES_INST 10 /* Reserved instruction exception */ 61178172Simp#define T_COP_UNUSABLE 11 /* Coprocessor unusable */ 62178172Simp#define T_OVFLOW 12 /* Arithmetic overflow */ 63178172Simp#define T_TRAP 13 /* Trap instruction */ 64178172Simp#define T_VCEI 14 /* Virtual coherency instruction */ 65178172Simp#define T_FPE 15 /* Floating point exception */ 66178172Simp#define T_IWATCH 16 /* Inst. Watch address reference */ 67178172Simp#define T_C2E 18 /* Exception from coprocessor 2 */ 68178172Simp#define T_DWATCH 23 /* Data Watch address reference */ 69178172Simp#define T_MCHECK 24 /* Received an MCHECK */ 70178172Simp#define T_VCED 31 /* Virtual coherency data */ 71178172Simp 72178172Simp#define T_USER 0x20 /* user-mode flag or'ed with type */ 73178172Simp 74178172Simp#if !defined(SMP) && (defined(DDB) || defined(DEBUG)) 75178172Simp 76178172Simpstruct trapdebug { /* trap history buffer for debugging */ 77206717Sjmallett register_t status; 78206717Sjmallett register_t cause; 79206717Sjmallett register_t vadr; 80206717Sjmallett register_t pc; 81206717Sjmallett register_t ra; 82206717Sjmallett register_t sp; 83206717Sjmallett register_t code; 84178172Simp}; 85178172Simp 86178172Simp#define trapdebug_enter(x, cd) { \ 87206717Sjmallett register_t s = intr_disable(); \ 88178172Simp trp->status = x->sr; \ 89178172Simp trp->cause = x->cause; \ 90178172Simp trp->vadr = x->badvaddr; \ 91178172Simp trp->pc = x->pc; \ 92178172Simp trp->sp = x->sp; \ 93178172Simp trp->ra = x->ra; \ 94178172Simp trp->code = cd; \ 95178172Simp if (++trp == &trapdebug[TRAPSIZE]) \ 96178172Simp trp = trapdebug; \ 97206717Sjmallett intr_restore(s); \ 98178172Simp} 99178172Simp 100178172Simp#define TRAPSIZE 10 /* Trap log buffer length */ 101178172Simpextern struct trapdebug trapdebug[TRAPSIZE], *trp; 102178172Simp 103178172Simpvoid trapDump(char *msg); 104178172Simp 105178172Simp#else 106178172Simp 107178172Simp#define trapdebug_enter(x, cd) 108178172Simp 109178172Simp#endif 110178172Simp 111202031Simpvoid MipsFPTrap(u_int, u_int, u_int); 112202031Simpvoid MipsKernGenException(void); 113202031Simpvoid MipsKernIntr(void); 114205360Sneelvoid MipsTLBInvalidException(void); 115202031Simpvoid MipsTLBMissException(void); 116202031Simpvoid MipsUserGenException(void); 117202031Simpvoid MipsUserIntr(void); 118202031Simp 119206717Sjmallettregister_t trap(struct trapframe *); 120202031Simp 121178172Simp#endif /* !_MACHINE_TRAP_H_ */ 122