1/* $OpenBSD: frame.h,v 1.13 2018/06/15 17:58:41 bluhm Exp $ */
2/* $NetBSD: frame.h,v 1.12 1995/10/11 04:20:08 mycroft Exp $ */
3
4/*-
5 * Copyright (c) 1995 Charles M. Hannum. All rights reserved.
6 * Copyright (c) 1990 The Regents of the University of California.
7 * All rights reserved.
8 *
9 * This code is derived from software contributed to Berkeley by
10 * William Jolitz.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. 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#ifndef _MACHINE_FRAME_H
40#define _MACHINE_FRAME_H
41#include <sys/signal.h>
42
43/*
44 * System stack frames.
45 */
46
47/*
48 * Exception/Trap Stack Frame
49 */
50struct trapframe {
51 int tf_fs;
52 int tf_gs;
53 int tf_es;
54 int tf_ds;
55 int tf_edi;
56 int tf_esi;
57 int tf_err; /* not the hardware position */
58 int tf_ebx;
59 int tf_edx;
60 int tf_ecx;
61 int tf_eax;
62 int tf_trapno;
63 /* below portion defined in 386 hardware */
64 int tf_ebp; /* hardware puts err here, INTRENTRY() moves it up */
65 int tf_eip;
66 int tf_cs;
67 int tf_eflags;
68 /* below used when transitting rings (e.g. user to kernel) */
69 int tf_esp;
70 int tf_ss;
71 /* below used when switching out of VM86 mode */
72 int tf_vm86_es;
73 int tf_vm86_ds;
74 int tf_vm86_fs;
75 int tf_vm86_gs;
76};
77
78/*
79 * Interrupt stack frame
80 */
81struct intrframe {
82 int if_ppl;
83 int if_fs;
84 int if_gs;
85 int if_es;
86 int if_ds;
87 int if_edi;
88 int if_esi;
89 int :32; /* for compat with trap frame - err */
90 int if_ebx;
91 int if_edx;
92 int if_ecx;
93 int if_eax;
94 int :32; /* for compat with trap frame - trapno */
95 int if_ebp;
96 /* below portion defined in 386 hardware */
97 int if_eip;
98 int if_cs;
99 int if_eflags;
100 /* below only when transitting rings (e.g. user to kernel) */
101 int if_esp;
102 int if_ss;
103};
104
105/*
106 * iret stack frame
107 */
108struct iretframe {
109 int irf_trapno;
110 int irf_err;
111 int irf_eip;
112 int irf_cs;
113 int irf_eflags;
114 int irf_esp;
115 int irf_ss;
116 /* below used when switching back to VM86 mode */
117 int irf_vm86_es;
118 int irf_vm86_ds;
119 int irf_vm86_fs;
120 int irf_vm86_gs;
121};
122
123/*
124 * Trampoline stack frame
125 */
126struct trampframe {
127 int trf__deadbeef;
128 int trf__kern_esp;
129 int trf_fs;
130 int trf_eax;
131 int trf_ebp;
132 int trf_trapno;
133 int trf_err;
134 int trf_eip;
135 int trf_cs;
136 int trf_eflags;
137 int trf_esp;
138 int trf_ss;
139 /* below used when switching out of VM86 mode */
140 int trf_vm86_es;
141 int trf_vm86_ds;
142 int trf_vm86_fs;
143 int trf_vm86_gs;
144};
145
146/*
147 * Stack frame inside cpu_switch()
148 */
149struct switchframe {
150 int sf_edi;
151 int sf_esi;
152 int sf_ebx;
153 int sf_eip;
154};
155
156struct callframe {
157 struct callframe *f_frame;
158 int f_retaddr;
159 int f_arg0;
160};
161
162/*
163 * Signal frame
164 */
165struct sigframe {
166 int sf_signum;
167 siginfo_t *sf_sip;
168 struct sigcontext *sf_scp;
169 sig_t sf_handler;
170 struct sigcontext sf_sc;
171 siginfo_t sf_si;
172};
173#endif