sys/arch/x86/include/trap.h

   1 /*      $NetBSD: trap.h,v 1.2 2003/08/07 16:30:33 agc 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 /*
  38  * Trap type values
  39  * also known in trap.c for name strings
  40  */
  41
  42 #define T_PRIVINFLT      0      /* privileged instruction */
  43 #define T_BPTFLT         1      /* breakpoint trap */
  44 #define T_ARITHTRAP      2      /* arithmetic trap */
  45 #define T_ASTFLT         3      /* asynchronous system trap */
  46 #define T_PROTFLT        4      /* protection fault */
  47 #define T_TRCTRAP        5      /* trace trap */
  48 #define T_PAGEFLT        6      /* page fault */
  49 #define T_ALIGNFLT       7      /* alignment fault */
  50 #define T_DIVIDE         8      /* integer divide fault */
  51 #define T_NMI            9      /* non-maskable interrupt */
  52 #define T_OFLOW         10      /* overflow trap */
  53 #define T_BOUND         11      /* bounds check fault */
  54 #define T_DNA           12      /* device not available fault */
  55 #define T_DOUBLEFLT     13      /* double fault */
  56 #define T_FPOPFLT       14      /* fp coprocessor operand fetch fault */
  57 #define T_TSSFLT        15      /* invalid tss fault */
  58 #define T_SEGNPFLT      16      /* segment not present fault */
  59 #define T_STKFLT        17      /* stack fault */
  60 #define T_MCA           18      /* machine check */
  61 #define T_XMM           19      /* SSE FP exception */
  62 #define T_RESERVED      20      /* reserved fault base */
  63
  64 /* Trap's coming from user mode */
  65 #define T_USER  0x100
  66
  67 /* Flags kludged into the trap code */
  68
  69 #define TC_TSS          0x80000000
  70 #define TC_FLAGMASK     (TC_TSS)