386BSD 0.1 development
[unix-history] / usr / src / sys.386bsd / i386 / include / frame.h
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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};