www.pudn.com > tcpipsim.rar > trap.h

/*- 
 * Copyright (c) 1990, 1993 
 *	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	8.1 (Berkeley) 6/11/93 
 */ 
 
/* 
 * Trap type values 
 * also known in trap.c for name strings 
 */ 
 
#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_ARITHTRAP	6	/* arithmetic trap */ 
#define	T_ASTFLT	7	/* system forced exception */ 
#define	T_SEGFLT	8	/* segmentation (limit) fault */ 
#define	T_PROTFLT	9	/* protection fault */ 
#define	T_TRCTRAP	10	/* trace trap */ 
#define	T_PAGEFLT	12	/* page 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 */ 
 
/* definitions for  */ 
#define	    ILL_RESAD_FAULT	T_RESADFLT 
#define	    ILL_PRIVIN_FAULT	T_PRIVINFLT 
#define	    ILL_RESOP_FAULT	T_RESOPFLT 
#define	    ILL_ALIGN_FAULT	T_ALIGNFLT 
#define	    ILL_FPOP_FAULT	T_FPOPFLT	/* coprocessor operand fault */ 
 
/* codes for SIGFPE/ARITHTRAP */ 
#define	    FPE_INTOVF_TRAP	0x1	/* integer overflow */ 
#define	    FPE_INTDIV_TRAP	0x2	/* integer divide by zero */ 
#define	    FPE_FLTDIV_TRAP	0x3	/* floating/decimal divide by zero */ 
#define	    FPE_FLTOVF_TRAP	0x4	/* floating overflow */ 
#define	    FPE_FLTUND_TRAP	0x5	/* floating underflow */ 
#define	    FPE_FPU_NP_TRAP	0x6	/* floating point unit not present */ 
#define	    FPE_SUBRNG_TRAP	0x7	/* subrange out of bounds */ 
 
/* codes for SIGBUS */ 
#define	    BUS_PAGE_FAULT	T_PAGEFLT	/* page fault protection base */ 
#define	    BUS_SEGNP_FAULT	T_SEGNPFLT	/* segment not present */ 
#define	    BUS_STK_FAULT	T_STKFLT	/* stack segment */ 
#define	    BUS_SEGM_FAULT	T_RESERVED	/* segment protection base */ 
 
/* Trap's coming from user mode */ 
#define	T_USER	0x100