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 * 4. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 *	from: @(#)frame.h	5.2 (Berkeley) 1/18/91
33 * $FreeBSD$
34 */
35
36#ifndef _MACHINE_FRAME_H_
37#define _MACHINE_FRAME_H_ 1
38
39/*
40 * System stack frames.
41 */
42
43/*
44 * Exception/Trap Stack Frame
45 */
46
47struct trapframe {
48	int	tf_fs;
49	int	tf_es;
50	int	tf_ds;
51	int	tf_edi;
52	int	tf_esi;
53	int	tf_ebp;
54	int	tf_isp;
55	int	tf_ebx;
56	int	tf_edx;
57	int	tf_ecx;
58	int	tf_eax;
59	int	tf_trapno;
60	/* below portion defined in 386 hardware */
61	int	tf_err;
62	int	tf_eip;
63	int	tf_cs;
64	int	tf_eflags;
65	/* below only when crossing rings (e.g. user to kernel) */
66	int	tf_esp;
67	int	tf_ss;
68};
69
70/* Superset of trap frame, for traps from virtual-8086 mode */
71
72struct trapframe_vm86 {
73	int	tf_fs;
74	int	tf_es;
75	int	tf_ds;
76	int	tf_edi;
77	int	tf_esi;
78	int	tf_ebp;
79	int	tf_isp;
80	int	tf_ebx;
81	int	tf_edx;
82	int	tf_ecx;
83	int	tf_eax;
84	int	tf_trapno;
85	/* below portion defined in 386 hardware */
86	int	tf_err;
87	int	tf_eip;
88	int	tf_cs;
89	int	tf_eflags;
90	/* below only when crossing rings (e.g. user to kernel) */
91	int	tf_esp;
92	int	tf_ss;
93	/* below only when switching out of VM86 mode */
94	int	tf_vm86_es;
95	int	tf_vm86_ds;
96	int	tf_vm86_fs;
97	int	tf_vm86_gs;
98};
99
100#endif /* _MACHINE_FRAME_H_ */
101