sys/arch/vax/include/trap.h

   1 /*      $NetBSD: trap.h,v 1.21 2008/08/05 15:59:28 matt 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 #ifndef _VAX_TRAP_H_
  42 #define _VAX_TRAP_H_
  43
  44 #define T_RESADFLT      0       /* reserved addressing */
  45 #define T_PRIVINFLT     1       /* privileged instruction */
  46 #define T_RESOPFLT      2       /* reserved operand */
  47 #define T_BPTFLT        3       /* breakpoint instruction */
  48 #define T_XFCFLT        4       /* Customer reserved instruction */
  49 #define T_SYSCALL       5       /* system call (kcall) */
  50 #define T_ARITHFLT      6       /* arithmetic trap */
  51 #define T_ASTFLT        7       /* system forced exception */
  52 #define T_PTELEN        8       /* Page table length exceeded */
  53 #define T_TRANSFLT      9       /* translation fault */
  54 #define T_TRCTRAP       10      /* trace trap */
  55 #define T_COMPAT        11      /* compatibility mode fault on VAX */
  56 #define T_ACCFLT        12      /* Access violation fault */
  57 #define T_KSPNOTVAL     15      /* kernel stack pointer not valid */
  58 #define T_KDBTRAP       17      /* kernel debugger trap */
  59
  60 /* These gets ORed with the word for page handling routines */
  61 #define T_WRITE         0x80
  62 #define T_PTEFETCH      0x40
  63
  64 /* Section 6.4.1 Arithmetic Traps/Faults */
  65 #define ATRP_INTOVF     0x1     /* integer overflow */
  66 #define ATRP_INTDIV     0x2     /* integer divide by zero */
  67 #define ATRP_FLTOVF     0x3     /* floating overflow */
  68 #define ATRP_FLTDIV     0x4     /* floating/decimal divide by zero */
  69 #define ATRP_FLTUND     0x5     /* floating underflow */
  70 #define ATRP_DECOVF     0x6     /* decimal underflow */
  71 #define ATRP_FLTSUB     0x7     /* subscript range */
  72 #define AFLT_FLTOVF     0x8     /* floating overflow */
  73 #define AFLT_FLTDIV     0x9     /* floating divide-by-zero */
  74 #define AFLT_FLTUND     0xa     /* floating underflow */
  75
  76 /* Trap's coming from user mode */
  77 #define T_USER  0x100
  78
  79 #ifndef _LOCORE
  80 struct  trapframe {
  81         long    fp;     /* Stack frame pointer */
  82         long    ap;     /* Argument pointer on user stack */
  83         long    sp;     /* Stack pointer */
  84         long    r0;     /* General registers saved upon trap/syscall */
  85         long    r1;
  86         long    r2;
  87         long    r3;
  88         long    r4;
  89         long    r5;
  90         long    r6;
  91         long    r7;
  92         long    r8;
  93         long    r9;
  94         long    r10;
  95         long    r11;
  96         long    trap;   /* Type of trap */
  97         long    code;   /* Trap specific code */
  98         long    pc;     /* User pc */
  99         long    psl;    /* User psl */
 100 };
 101
 102 #endif /* _LOCORE */
 103
 104 #endif /* _VAX_TRAP_H_ */