xref: /src/sys/arch/x86/include/trap.h

/*	$NetBSD: trap.h,v 1.3 2020/03/14 04:55:14 maxv Exp $	*/

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * William Jolitz.
 *
 * 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.
 * 3. 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.
 *
 *	@(#)trap.h	5.4 (Berkeley) 5/9/91
 */

#define T_PRIVINFLT	 0	/* privileged instruction */
#define T_BPTFLT	 1	/* breakpoint trap */
#define T_ARITHTRAP	 2	/* arithmetic trap */
#define T_ASTFLT	 3	/* asynchronous system trap */
#define T_PROTFLT	 4	/* protection fault */
#define T_TRCTRAP	 5	/* trace trap */
#define T_PAGEFLT	 6	/* page fault */
#define T_ALIGNFLT	 7	/* alignment fault */
#define T_DIVIDE	 8	/* integer divide fault */
#define T_NMI		 9	/* non-maskable interrupt */
#define T_OFLOW		10	/* overflow trap */
#define T_BOUND		11	/* bounds check fault */
#define T_DNA		12	/* device not available fault */
#define T_DOUBLEFLT	13	/* double fault */
#define T_FPOPFLT	14	/* fp coprocessor operand fetch fault */
#define T_TSSFLT	15	/* invalid tss fault */
#define T_SEGNPFLT	16	/* segment not present fault */
#define T_STKFLT	17	/* stack fault */
#define T_MCA		18	/* machine check */
#define T_XMM		19	/* SSE FP exception */
#define T_RESERVED	20	/* reserved fault base */

/* Trap's coming from user mode */
#define T_USER	0x100

/* Flags kludged into the trap code */

#define TC_TSS		0x80000000
#define TC_FLAGMASK	(TC_TSS)