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