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