FreeBSD/Linux Kernel Cross Reference
sys/x86/include/trap.h

     /*-
      * SPDX-License-Identifier: BSD-3-Clause
      *
      * 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.
     *
     *      from: @(#)trap.h        5.4 (Berkeley) 5/9/91
     * $FreeBSD$
     */
    
    #ifndef _MACHINE_TRAP_H_
    #define _MACHINE_TRAP_H_
    
    /*
     * Trap type values
     * also known in trap.c for name strings
     */
    
    #define T_PRIVINFLT     1       /* privileged instruction */
    #define T_BPTFLT        3       /* breakpoint instruction */
    #define T_ARITHTRAP     6       /* arithmetic trap */
    #define T_PROTFLT       9       /* protection fault */
    #define T_TRCTRAP       10      /* debug exception (sic) */
    #define T_PAGEFLT       12      /* page fault */
    #define T_ALIGNFLT      14      /* alignment fault */
    
    #define T_DIVIDE        18      /* integer divide fault */
    #define T_NMI           19      /* non-maskable trap */
    #define T_OFLOW         20      /* overflow trap */
    #define T_BOUND         21      /* bound instruction fault */
    #define T_DNA           22      /* device not available fault */
    #define T_DOUBLEFLT     23      /* double fault */
    #define T_FPOPFLT       24      /* fp coprocessor operand fetch fault */
    #define T_TSSFLT        25      /* invalid tss fault */
    #define T_SEGNPFLT      26      /* segment not present fault */
    #define T_STKFLT        27      /* stack fault */
    #define T_MCHK          28      /* machine check trap */
    #define T_XMMFLT        29      /* SIMD floating-point exception */
    #define T_RESERVED      30      /* reserved (unknown) */
    #define T_DTRACE_RET    32      /* DTrace pid return */
    
    /* Trap's coming from user mode */
    #define T_USER  0x100
    
    #endif /* !_MACHINE_TRAP_H_ */

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