Home | History | Annotate | Line # | Download | only in include
trap.h revision 1.4 
      1 /*      $NetBSD: trap.h,v 1.4 1995/02/13 00:43:32 ragge 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. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the University of
     21  *	California, Berkeley and its contributors.
     22  * 4. Neither the name of the University nor the names of its contributors
     23  *    may be used to endorse or promote products derived from this software
     24  *    without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  * SUCH DAMAGE.
     37  *
     38  *	@(#)trap.h	5.4 (Berkeley) 5/9/91
     39  */
     40 
     41 /*
     42  * Trap type values
     43  * also known in trap.c for name strings
     44  */
     45 
     46 #define	T_RESADFLT	0	/* reserved addressing */
     47 #define	T_PRIVINFLT	1	/* privileged instruction */
     48 #define	T_RESOPFLT	2	/* reserved operand */
     49 #define	T_BPTFLT	3	/* breakpoint instruction */
     50 #define	T_SYSCALL	5	/* system call (kcall) */
     51 #define	T_ARITHFLT	6	/* arithmetic trap */
     52 #define	T_ASTFLT	7	/* system forced exception */
     53 #define	T_PTELEN	8	/* Page table length exceeded */
     54 #define	T_TRANSFLT	9	/* translation fault */
     55 /* #define	T_TRCTRAP	10	/* trace trap */
     56 /* #define	T_COMPAT	11	/* compatibility mode fault on VAX */
     57 #define	T_ACCFLT	12	/* Access violation fault */
     58 /* #define	T_TABLEFLT	13	/* page table fault */
     59 /* #define	T_ALIGNFLT	14	/* alignment fault */
     60 /* #define	T_KSPNOTVAL	15	/* kernel stack pointer not valid */
     61 /* #define	T_BUSERR	16	/* bus error */
     62 /* #define	T_KDBTRAP	17	/* kernel debugger trap */
     63 
     64 /* #define	T_DIVIDE	18	/* integer divide fault */
     65 /* #define	T_NMI		19	/* non-maskable trap */
     66 /* #define	T_OFLOW		20	/* overflow trap */
     67 /* #define	T_BOUND		21	/* bound instruction fault */
     68 /* #define	T_DNA		22	/* device not available fault */
     69 /* #define	T_DOUBLEFLT	23	/* double fault */
     70 /* #define	T_FPOPFLT	24	/* fp coprocessor operand fetch fault */
     71 /* #define	T_TSSFLT	25	/* invalid tss fault */
     72 /* #define	T_SEGNPFLT	26	/* segment not present fault */
     73 /* #define	T_STKFLT	27	/* stack fault */
     74 /* #define	T_RESERVED	28	/* reserved fault base */
     75 
     76 /* These gets ORed with the word for page handling routines */
     77 #define	T_WRITE		0x80
     78 #define	T_PTEFETCH	0x40
     79 
     80 /* Trap's coming from user mode */
     81 #define	T_USER	0x100
     82 
     83 #ifndef ASSEMBLER
     84 /* If we want to alter USP in some syscall, we do it with mtpr */
     85 struct	trapframe {
     86 	int	fp;	/* Stack frame pointer */
     87         int     ap;     /* Argument pointer on user stack */
     88         int     r0;     /* General registers saved upon trap/syscall */
     89         int     r1;
     90         int     r2;
     91         int     r3;
     92         int     r4;
     93         int     r5;
     94 	int	trap;	/* Type of trap */
     95         u_int	code;   /* Trap specific code */
     96         u_int   pc;     /* User pc */
     97         u_int   psl;    /* User psl */
     98 };
     99 #endif /* ASSEMBLER */
    100