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/* $NetBSD: trap.h,v 1.10 1995/12/13 18:54:03 ragge Exp $ */
/*-
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*
* @(#)trap.h 5.4 (Berkeley) 5/9/91
*/
/*
* Trap type values
* also known in trap.c for name strings
*/
#ifndef _VAX_TRAP_H_
#define _VAX_TRAP_H_
#define T_RESADFLT 0 /* reserved addressing */
#define T_PRIVINFLT 1 /* privileged instruction */
#define T_RESOPFLT 2 /* reserved operand */
#define T_BPTFLT 3 /* breakpoint instruction */
#define T_SYSCALL 5 /* system call (kcall) */
#define T_ARITHFLT 6 /* arithmetic trap */
#define T_ASTFLT 7 /* system forced exception */
#define T_PTELEN 8 /* Page table length exceeded */
#define T_TRANSFLT 9 /* translation fault */
#define T_TRCTRAP 10 /* trace trap */
/* #define T_COMPAT 11 /* compatibility mode fault on VAX */
#define T_ACCFLT 12 /* Access violation fault */
/* #define T_TABLEFLT 13 /* page table fault */
/* #define T_ALIGNFLT 14 /* alignment fault */
#define T_KSPNOTVAL 15 /* kernel stack pointer not valid */
/* #define T_BUSERR 16 /* bus error */
#define T_KDBTRAP 17 /* kernel debugger trap */
/* #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_RESERVED 28 /* reserved fault base */
/* These gets ORed with the word for page handling routines */
#define T_WRITE 0x80
#define T_PTEFETCH 0x40
/* Trap's coming from user mode */
#define T_USER 0x100
#ifndef ASSEMBLER
/* If we want to alter USP in some syscall, we do it with mtpr */
struct trapframe {
int fp; /* Stack frame pointer */
int ap; /* Argument pointer on user stack */
int r0; /* General registers saved upon trap/syscall */
int r1;
int r2;
int r3;
int r4;
int r5;
int r6;
int r7;
int r8;
int r9;
int r10;
int r11;
int trap; /* Type of trap */
u_int code; /* Trap specific code */
u_int pc; /* User pc */
u_int psl; /* User psl */
};
/*
* This struct is used when setting up interrupt vectors dynamically.
* It pushes a longword between 0-63 on the stack; this number is
* normally used as the ctlr number on devices. This use effectively
* limits the number of interruptable ctlrs on the unibus to 64.
*/
struct ivec_dsp {
char pushr; /* pushr */
char pushrarg; /* $3f */
char pushl; /* pushl */
char pushlarg; /* $? */
char nop; /* nop, for foolish gcc */
char calls[3]; /* calls $1,? */
void (*hoppaddr)(); /* jump for calls */
char popr; /* popr $0x3f */
char poprarg;
char rei; /* rei */
char pad; /* sizeof(struct ivec_dsp) == 16 */
};
#endif /* ASSEMBLER */
#endif _VAX_TRAP_H_
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