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