1 /* $OpenBSD: trap.h,v 1.3 1999/01/27 04:46:06 imp 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 * 4. 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 * from: @(#)trap.h 8.1 (Berkeley) 6/10/93 38 * JNPR: trap.h,v 1.3 2006/12/02 09:53:41 katta 39 * $FreeBSD$ 40 */ 41 42 #ifndef _MACHINE_TRAP_H_ 43 #define _MACHINE_TRAP_H_ 44 45 /* 46 * Trap codes also known in trap.c for name strings. 47 * Used for indexing so modify with care. 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 #define T_TRAP 13 /* Trap instruction */ 64 #define T_VCEI 14 /* Virtual coherency instruction */ 65 #define T_FPE 15 /* Floating point exception */ 66 #define T_IWATCH 16 /* Inst. Watch address reference */ 67 #define T_C2E 18 /* Exception from coprocessor 2 */ 68 #define T_DWATCH 23 /* Data Watch address reference */ 69 #define T_MCHECK 24 /* Received an MCHECK */ 70 #define T_VCED 31 /* Virtual coherency data */ 71 72 #define T_USER 0x20 /* user-mode flag or'ed with type */ 73 74 #if !defined(SMP) && (defined(DDB) || defined(DEBUG)) 75 76 struct trapdebug { /* trap history buffer for debugging */ 77 register_t status; 78 register_t cause; 79 register_t vadr; 80 register_t pc; 81 register_t ra; 82 register_t sp; 83 register_t code; 84 }; 85 86 #define trapdebug_enter(x, cd) { \ 87 register_t s = intr_disable(); \ 88 trp->status = x->sr; \ 89 trp->cause = x->cause; \ 90 trp->vadr = x->badvaddr; \ 91 trp->pc = x->pc; \ 92 trp->sp = x->sp; \ 93 trp->ra = x->ra; \ 94 trp->code = cd; \ 95 if (++trp == &trapdebug[TRAPSIZE]) \ 96 trp = trapdebug; \ 97 intr_restore(s); \ 98 } 99 100 #define TRAPSIZE 10 /* Trap log buffer length */ 101 extern struct trapdebug trapdebug[TRAPSIZE], *trp; 102 103 void trapDump(char *msg); 104 105 #else 106 107 #define trapdebug_enter(x, cd) 108 109 #endif 110 111 void MipsFPTrap(u_int, u_int, u_int); 112 void MipsKernGenException(void); 113 void MipsKernIntr(void); 114 void MipsTLBInvalidException(void); 115 void MipsTLBMissException(void); 116 void MipsUserGenException(void); 117 void MipsUserIntr(void); 118 119 register_t trap(struct trapframe *); 120 121 #endif /* !_MACHINE_TRAP_H_ */ 122