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frame.h revision 1.12 
      1 /*	$NetBSD: frame.h,v 1.12 1995/10/11 04:20:08 mycroft Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1995 Charles M. Hannum.  All rights reserved.
      5  * Copyright (c) 1990 The Regents of the University of California.
      6  * All rights reserved.
      7  *
      8  * This code is derived from software contributed to Berkeley by
      9  * William Jolitz.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. All advertising materials mentioning features or use of this software
     20  *    must display the following acknowledgement:
     21  *	This product includes software developed by the University of
     22  *	California, Berkeley and its contributors.
     23  * 4. Neither the name of the University nor the names of its contributors
     24  *    may be used to endorse or promote products derived from this software
     25  *    without specific prior written permission.
     26  *
     27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     37  * SUCH DAMAGE.
     38  *
     39  *	@(#)frame.h	5.2 (Berkeley) 1/18/91
     40  */
     41 
     42 #include <sys/signal.h>
     43 
     44 /*
     45  * System stack frames.
     46  */
     47 
     48 /*
     49  * Exception/Trap Stack Frame
     50  */
     51 struct trapframe {
     52 	int	tf_es;
     53 	int	tf_ds;
     54 	int	tf_edi;
     55 	int	tf_esi;
     56 	int	tf_ebp;
     57 	int	tf_ebx;
     58 	int	tf_edx;
     59 	int	tf_ecx;
     60 	int	tf_eax;
     61 	int	tf_trapno;
     62 	/* below portion defined in 386 hardware */
     63 	int	tf_err;
     64 	int	tf_eip;
     65 	int	tf_cs;
     66 	int	tf_eflags;
     67 	/* below used when transitting rings (e.g. user to kernel) */
     68 	int	tf_esp;
     69 	int	tf_ss;
     70 	/* below used when switching out of VM86 mode */
     71 	int	tf_vm86_es;
     72 	int	tf_vm86_ds;
     73 	int	tf_vm86_fs;
     74 	int	tf_vm86_gs;
     75 };
     76 
     77 /*
     78  * Interrupt stack frame
     79  */
     80 struct intrframe {
     81 	int	if_ppl;
     82 	int	if_es;
     83 	int	if_ds;
     84 	int	if_edi;
     85 	int	if_esi;
     86 	int	if_ebp;
     87 	int	if_ebx;
     88 	int	if_edx;
     89 	int	if_ecx;
     90 	int	if_eax;
     91 	int	:32;		/* for compat with trap frame - trapno */
     92 	int	:32;		/* for compat with trap frame - err */
     93 	/* below portion defined in 386 hardware */
     94 	int	if_eip;
     95 	int	if_cs;
     96 	int	if_eflags;
     97 	/* below only when transitting rings (e.g. user to kernel) */
     98 	int	if_esp;
     99 	int	if_ss;
    100 };
    101 
    102 /*
    103  * Stack frame inside cpu_switch()
    104  */
    105 struct switchframe {
    106 	int	sf_ppl;
    107 	int	sf_edi;
    108 	int	sf_esi;
    109 	int	sf_ebx;
    110 	int	sf_eip;
    111 };
    112 
    113 /*
    114  * Signal frame
    115  */
    116 struct sigframe {
    117 	int	sf_signum;
    118 	int	sf_code;
    119 	struct	sigcontext *sf_scp;
    120 	sig_t	sf_handler;
    121 	struct	sigcontext sf_sc;
    122 };
    123