1 /* $OpenBSD: trap.h,v 1.3 1999/01/27 04:46:06 imp Exp $ */
4 * SPDX-License-Identifier: BSD-3-Clause
6 * Copyright (c) 1988 University of Utah.
7 * Copyright (c) 1992, 1993
8 * The Regents of the University of California. All rights reserved.
10 * This code is derived from software contributed to Berkeley by
11 * the Systems Programming Group of the University of Utah Computer
12 * Science Department and Ralph Campbell.
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 * 3. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * from: Utah Hdr: trap.h 1.1 90/07/09
39 * from: @(#)trap.h 8.1 (Berkeley) 6/10/93
40 * JNPR: trap.h,v 1.3 2006/12/02 09:53:41 katta
44 #ifndef _MACHINE_TRAP_H_
45 #define _MACHINE_TRAP_H_
48 * Trap codes also known in trap.c for name strings.
49 * Used for indexing so modify with care.
52 #define T_INT 0 /* Interrupt pending */
53 #define T_TLB_MOD 1 /* TLB modified fault */
54 #define T_TLB_LD_MISS 2 /* TLB miss on load or ifetch */
55 #define T_TLB_ST_MISS 3 /* TLB miss on a store */
56 #define T_ADDR_ERR_LD 4 /* Address error on a load or ifetch */
57 #define T_ADDR_ERR_ST 5 /* Address error on a store */
58 #define T_BUS_ERR_IFETCH 6 /* Bus error on an ifetch */
59 #define T_BUS_ERR_LD_ST 7 /* Bus error on a load or store */
60 #define T_SYSCALL 8 /* System call */
61 #define T_BREAK 9 /* Breakpoint */
62 #define T_RES_INST 10 /* Reserved instruction exception */
63 #define T_COP_UNUSABLE 11 /* Coprocessor unusable */
64 #define T_OVFLOW 12 /* Arithmetic overflow */
65 #define T_TRAP 13 /* Trap instruction */
66 #define T_VCEI 14 /* Virtual coherency instruction */
67 #define T_FPE 15 /* Floating point exception */
68 #define T_IWATCH 16 /* Inst. Watch address reference */
69 #define T_C2E 18 /* Exception from coprocessor 2 */
70 #define T_DWATCH 23 /* Data Watch address reference */
71 #define T_MCHECK 24 /* Received an MCHECK */
72 #define T_VCED 31 /* Virtual coherency data */
74 #define T_USER 0x20 /* user-mode flag or'ed with type */
76 #if !defined(SMP) && (defined(DDB) || defined(DEBUG))
78 struct trapdebug { /* trap history buffer for debugging */
88 #define trapdebug_enter(x, cd) { \
89 register_t s = intr_disable(); \
90 trp->status = x->sr; \
91 trp->cause = x->cause; \
92 trp->vadr = x->badvaddr; \
97 if (++trp == &trapdebug[TRAPSIZE]) \
102 #define TRAPSIZE 10 /* Trap log buffer length */
103 extern struct trapdebug trapdebug[TRAPSIZE], *trp;
105 void trapDump(char *msg);
109 #define trapdebug_enter(x, cd)
113 void MipsFPTrap(u_int, u_int, u_int);
114 void MipsKernGenException(void);
115 void MipsKernIntr(void);
116 void MipsKStackOverflow(void);
117 void MipsTLBInvalidException(void);
118 void MipsTLBMissException(void);
119 void MipsUserGenException(void);
120 void MipsUserIntr(void);
122 register_t trap(struct trapframe *);
124 #endif /* !_MACHINE_TRAP_H_ */