/*	$OpenBSD: trap.h,v 1.15 2001/12/22 17:57:11 smurph Exp $ */
/* 
 * Mach Operating System
 * Copyright (c) 1992 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie Mellon 
 * the rights to redistribute these changes.
 */
/*
 * Trap codes 
 */
#ifndef __MACHINE_TRAP_H__
#define __MACHINE_TRAP_H__

/*
 * Trap type values
 */

#define T_RESADFLT	0	/* reserved addressing fault */
#define T_PRIVINFLT	1	/* privileged instruction fault */
#define T_RESOPFLT	2	/* reserved operand fault */

/* End of known constants */

#define T_INSTFLT	3	/* instruction access exception */
#define T_DATAFLT	4	/* data access exception */
#define T_MISALGNFLT	5	/* misaligned access exception */
#define T_ILLFLT	6	/* unimplemented opcode exception */
#define T_BNDFLT	7	/* bounds check violation exception */
#define T_ZERODIV	8	/* illegal divide exception */
#define T_OVFFLT	9	/* integer overflow exception */
#define T_ERRORFLT	10	/* error exception */
#define T_FPEPFLT	11	/* floating point precise exception */
#define T_FPEIFLT	12	/* floating point imprecise exception */
#define T_ASTFLT	13	/* software trap */
#if	DDB
#define	T_KDB_ENTRY	14	/* force entry to kernel debugger */
#define T_KDB_BREAK	15	/* break point hit */
#define T_KDB_TRACE	16	/* trace */
#endif /* DDB */
#define T_UNKNOWNFLT	17	/* unknown exception */
#define T_SIGTRAP	18	/* generate SIGTRAP */
#define T_SIGSYS	19	/* generate SIGSYS */
#define T_STEPBPT	20	/* special breakpoint for single step */
#define T_USERBPT	21	/* user set breakpoint (for debugger) */
#define T_SYSCALL	22	/* Syscall */
#define T_NON_MASK	23	/* MVME197 Non-Maskable Interrupt */
#if	DDB
#define	T_KDB_WATCH	24	/* watchpoint hit */
#endif /* DDB */
#define T_197_READ	25	/* MVME197 Data Read Miss (Software Table Searches) */
#define T_197_WRITE	26	/* MVME197 Data Write Miss (Software Table Searches) */
#define T_197_INST	27	/* MVME197 Inst ATC Miss (Software Table Searches) */
#define T_INT		28	/* interrupt exception */
#define T_USER		29	/* user mode fault */

#ifndef _LOCORE
void panictrap		__P((int, struct m88100_saved_state *));
void test_trap		__P((struct m88100_saved_state *));
void error_fault	__P((struct m88100_saved_state *));
void error_reset	__P((struct m88100_saved_state *));
unsigned ss_get_value	__P((struct proc *, unsigned, int));
int ss_put_value	__P((struct proc *, unsigned, unsigned, int));
unsigned ss_branch_taken __P((unsigned, unsigned, 
			      unsigned (*func) __P((unsigned int, struct trapframe *)),
			      struct trapframe *));  /* 'opaque' */
unsigned ss_getreg_val	__P((unsigned, struct trapframe *));
int ss_inst_branch	__P((unsigned));
int ss_inst_delayed	__P((unsigned));
unsigned ss_next_instr_address __P((struct proc *, unsigned, unsigned));
int cpu_singlestep	__P((register struct proc *));

#ifdef M88100
void m88100_trap	__P((unsigned, struct m88100_saved_state *));
void m88100_syscall	__P((register_t, struct m88100_saved_state *));
#endif /* M88100 */

#ifdef M88110
void m88110_trap	__P((unsigned, struct m88100_saved_state *));
void m88110_syscall	__P((register_t, struct m88100_saved_state *));
#endif /* M88110 */

#endif /* _LOCORE */

#endif /* __MACHINE_TRAP_H__ */