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      1 /*	$NetBSD: trap.h,v 1.3 2020/03/14 04:55:14 maxv Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1990 The Regents of the University of California.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * William Jolitz.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  *
     34  *	@(#)trap.h	5.4 (Berkeley) 5/9/91
     35  */
     36 
     37 #define T_PRIVINFLT	 0	/* privileged instruction */
     38 #define T_BPTFLT	 1	/* breakpoint trap */
     39 #define T_ARITHTRAP	 2	/* arithmetic trap */
     40 #define T_ASTFLT	 3	/* asynchronous system trap */
     41 #define T_PROTFLT	 4	/* protection fault */
     42 #define T_TRCTRAP	 5	/* trace trap */
     43 #define T_PAGEFLT	 6	/* page fault */
     44 #define T_ALIGNFLT	 7	/* alignment fault */
     45 #define T_DIVIDE	 8	/* integer divide fault */
     46 #define T_NMI		 9	/* non-maskable interrupt */
     47 #define T_OFLOW		10	/* overflow trap */
     48 #define T_BOUND		11	/* bounds check fault */
     49 #define T_DNA		12	/* device not available fault */
     50 #define T_DOUBLEFLT	13	/* double fault */
     51 #define T_FPOPFLT	14	/* fp coprocessor operand fetch fault */
     52 #define T_TSSFLT	15	/* invalid tss fault */
     53 #define T_SEGNPFLT	16	/* segment not present fault */
     54 #define T_STKFLT	17	/* stack fault */
     55 #define T_MCA		18	/* machine check */
     56 #define T_XMM		19	/* SSE FP exception */
     57 #define T_RESERVED	20	/* reserved fault base */
     58 
     59 /* Trap's coming from user mode */
     60 #define T_USER	0x100
     61 
     62 /* Flags kludged into the trap code */
     63 
     64 #define TC_TSS		0x80000000
     65 #define TC_FLAGMASK	(TC_TSS)
     66