sys/cpu/i386/include/trap.h

   1 /*-
   2  * Copyright (c) 1990 The Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * William Jolitz.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  *      from: @(#)trap.h        5.4 (Berkeley) 5/9/91
  37  * $FreeBSD: src/sys/i386/include/trap.h,v 1.10.2.2 2001/08/15 01:23:52 peter Exp $
  38  * $DragonFly: src/sys/cpu/i386/include/trap.h,v 1.4 2007/01/07 08:37:33 dillon Exp $
  39  */
  40
  41 #ifndef _CPU_TRAP_H_
  42 #define _CPU_TRAP_H_
  43
  44 /*
  45  * Trap type values
  46  * also known in trap.c for name strings
  47  */
  48
  49 #define T_PRIVINFLT     1       /* privileged instruction */
  50 #define T_BPTFLT        3       /* breakpoint instruction */
  51 #define T_ARITHTRAP     6       /* arithmetic trap */
  52 #define T_ASTFLT        7       /* system forced exception */
  53 #define T_PROTFLT       9       /* protection fault */
  54 #define T_TRCTRAP       10      /* debug exception (sic) */
  55 #define T_PAGEFLT       12      /* page fault */
  56 #define T_ALIGNFLT      14      /* alignment fault */
  57
  58 #define T_DIVIDE        18      /* integer divide fault */
  59 #define T_NMI           19      /* non-maskable trap */
  60 #define T_OFLOW         20      /* overflow trap */
  61 #define T_BOUND         21      /* bound instruction fault */
  62 #define T_DNA           22      /* device not available fault */
  63 #define T_DOUBLEFLT     23      /* double fault */
  64 #define T_FPOPFLT       24      /* fp coprocessor operand fetch fault */
  65 #define T_TSSFLT        25      /* invalid tss fault */
  66 #define T_SEGNPFLT      26      /* segment not present fault */
  67 #define T_STKFLT        27      /* stack fault */
  68 #define T_MCHK          28      /* machine check trap */
  69 #define T_XMMFLT        29      /* SIMD floating-point exception */
  70 #define T_RESERVED      30      /* reserved (unknown) */
  71
  72 /* XXX most of the following codes aren't used, but could be. */
  73
  74 /* definitions for <sys/signal.h> */
  75 #define     ILL_RESAD_FAULT     T_RESADFLT
  76 #define     ILL_PRIVIN_FAULT    T_PRIVINFLT
  77 #define     ILL_RESOP_FAULT     T_RESOPFLT
  78 #define     ILL_ALIGN_FAULT     T_ALIGNFLT
  79 #define     ILL_FPOP_FAULT      T_FPOPFLT       /* coprocessor operand fault */
  80
  81 /* portable macros for SIGFPE/ARITHTRAP */
  82 #define FPE_INTOVF      1       /* integer overflow */
  83 #define FPE_INTDIV      2       /* integer divide by zero */
  84 #define FPE_FLTDIV      3       /* floating point divide by zero */
  85 #define FPE_FLTOVF      4       /* floating point overflow */
  86 #define FPE_FLTUND      5       /* floating point underflow */
  87 #define FPE_FLTRES      6       /* floating point inexact result */
  88 #define FPE_FLTINV      7       /* invalid floating point operation */
  89 #define FPE_FLTSUB      8       /* subscript out of range */
  90
  91 /* old FreeBSD macros, deprecated */
  92 #define FPE_INTOVF_TRAP 0x1     /* integer overflow */
  93 #define FPE_INTDIV_TRAP 0x2     /* integer divide by zero */
  94 #define FPE_FLTDIV_TRAP 0x3     /* floating/decimal divide by zero */
  95 #define FPE_FLTOVF_TRAP 0x4     /* floating overflow */
  96 #define FPE_FLTUND_TRAP 0x5     /* floating underflow */
  97 #define FPE_FPU_NP_TRAP 0x6     /* floating point unit not present  */
  98 #define FPE_SUBRNG_TRAP 0x7     /* subrange out of bounds */
  99
 100 /* codes for SIGBUS */
 101 #define     BUS_PAGE_FAULT      T_PAGEFLT       /* page fault protection base */
 102 #define     BUS_SEGNP_FAULT     T_SEGNPFLT      /* segment not present */
 103 #define     BUS_STK_FAULT       T_STKFLT        /* stack segment */
 104 #define     BUS_SEGM_FAULT      T_RESERVED      /* segment protection base */
 105
 106 /* Trap's coming from user mode */
 107 #define T_SYSCALL80             0x080
 108 #define T_USER                  0x100
 109
 110 #endif /* !_CPU_TRAP_H_ */