116 lines
4.1 KiB
C
116 lines
4.1 KiB
C
/* $NetBSD: trap.h,v 1.12 1996/02/02 19:08:42 mycroft Exp $ */
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)trap.h 5.4 (Berkeley) 5/9/91
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*/
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/*
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* Trap type values
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* also known in trap.c for name strings
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*/
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#ifndef _VAX_TRAP_H_
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#define _VAX_TRAP_H_
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#define T_RESADFLT 0 /* reserved addressing */
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#define T_PRIVINFLT 1 /* privileged instruction */
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#define T_RESOPFLT 2 /* reserved operand */
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#define T_BPTFLT 3 /* breakpoint instruction */
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#define T_SYSCALL 5 /* system call (kcall) */
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#define T_ARITHFLT 6 /* arithmetic trap */
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#define T_ASTFLT 7 /* system forced exception */
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#define T_PTELEN 8 /* Page table length exceeded */
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#define T_TRANSFLT 9 /* translation fault */
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#define T_TRCTRAP 10 /* trace trap */
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#define T_COMPAT 11 /* compatibility mode fault on VAX */
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#define T_ACCFLT 12 /* Access violation fault */
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#define T_KSPNOTVAL 15 /* kernel stack pointer not valid */
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#define T_KDBTRAP 17 /* kernel debugger trap */
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/* These gets ORed with the word for page handling routines */
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#define T_WRITE 0x80
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#define T_PTEFETCH 0x40
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/* Trap's coming from user mode */
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#define T_USER 0x100
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#ifndef _LOCORE
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struct trapframe {
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unsigned fp; /* Stack frame pointer */
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unsigned ap; /* Argument pointer on user stack */
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unsigned sp; /* Stack pointer */
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unsigned r0; /* General registers saved upon trap/syscall */
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unsigned r1;
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unsigned r2;
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unsigned r3;
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unsigned r4;
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unsigned r5;
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unsigned r6;
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unsigned r7;
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unsigned r8;
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unsigned r9;
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unsigned r10;
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unsigned r11;
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unsigned trap; /* Type of trap */
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unsigned code; /* Trap specific code */
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unsigned pc; /* User pc */
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unsigned psl; /* User psl */
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};
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/*
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* This struct is used when setting up interrupt vectors dynamically.
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* It pushes a longword between 0-63 on the stack; this number is
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* normally used as the ctlr number on devices. This use effectively
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* limits the number of interruptable ctlrs on one unibus to 64.
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*/
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struct ivec_dsp {
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char pushr; /* pushr */
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char pushrarg; /* $3f */
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char pushl; /* pushl */
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char pushlarg; /* $? */
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char nop; /* nop, for foolish gcc */
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char calls[3]; /* calls $1,? */
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void (*hoppaddr)(); /* jump for calls */
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char popr; /* popr $0x3f */
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char poprarg;
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char rei; /* rei */
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char pad; /* sizeof(struct ivec_dsp) == 16 */
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};
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#endif /* _LOCORE */
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#endif _VAX_TRAP_H_
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