master
1/* $NetBSD: frame.h,v 1.41 2021/12/26 16:08:20 andvar Exp $ */
2
3/*-
4 * Copyright (c) 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Charles M. Hannum.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32/*-
33 * Copyright (c) 1990 The Regents of the University of California.
34 * All rights reserved.
35 *
36 * This code is derived from software contributed to Berkeley by
37 * William Jolitz.
38 *
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
41 * are met:
42 * 1. Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * 2. Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in the
46 * documentation and/or other materials provided with the distribution.
47 * 3. Neither the name of the University nor the names of its contributors
48 * may be used to endorse or promote products derived from this software
49 * without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61 * SUCH DAMAGE.
62 *
63 * @(#)frame.h 5.2 (Berkeley) 1/18/91
64 */
65
66#ifndef _I386_FRAME_H_
67#define _I386_FRAME_H_
68
69#include <sys/signal.h>
70
71/*
72 * System stack frames.
73 */
74
75/*
76 * Exception/Trap Stack Frame
77 */
78struct trapframe {
79 uint16_t tf_gs;
80 uint16_t tf_gs_pad;
81 uint16_t tf_fs;
82 uint16_t tf_fs_pad;
83 uint16_t tf_es;
84 uint16_t tf_es_pad;
85 uint16_t tf_ds;
86 uint16_t tf_ds_pad;
87 int tf_edi;
88 int tf_esi;
89 int tf_ebp;
90 int tf_ebx;
91 int tf_edx;
92 int tf_ecx;
93 int tf_eax;
94 int tf_trapno;
95 /* below portion defined in 386 hardware */
96 int tf_err;
97 int tf_eip;
98 int tf_cs;
99 int tf_eflags;
100 /* below used when transitting rings (e.g. user to kernel) */
101 int tf_esp;
102 int tf_ss;
103};
104
105/*
106 * Interrupt stack frame
107 */
108struct intrframe {
109 int if_ppl;
110 int if_gs;
111 int if_fs;
112 int if_es;
113 int if_ds;
114 int if_edi;
115 int if_esi;
116 int if_ebp;
117 int if_ebx;
118 int if_edx;
119 int if_ecx;
120 int if_eax;
121 uint32_t __if_trapno; /* for compat with trap frame - trapno */
122 uint32_t __if_err; /* for compat with trap frame - err */
123 /* below portion defined in 386 hardware */
124 int if_eip;
125 int if_cs;
126 int if_eflags;
127 /* below only when transitting rings (e.g. user to kernel) */
128 int if_esp;
129 int if_ss;
130};
131
132#ifdef XEN
133/*
134 * need arch independent way to access ip and cs from intrframe
135 */
136#define _INTRFRAME_CS if_cs
137#define _INTRFRAME_IP if_eip
138#endif
139
140/*
141 * Stack frame inside cpu_switchto()
142 */
143struct switchframe {
144 int sf_edi;
145 int sf_esi;
146 int sf_ebx;
147 int sf_eip;
148};
149
150#ifdef _KERNEL
151/*
152 * Old-style signal frame
153 */
154struct sigframe_sigcontext {
155 int sf_ra; /* return address for handler */
156 int sf_signum; /* "signum" argument for handler */
157 int sf_code; /* "code" argument for handler */
158 struct sigcontext *sf_scp; /* "scp" argument for handler */
159 struct sigcontext sf_sc; /* actual saved context */
160};
161#endif
162
163/*
164 * New-style signal frame
165 */
166struct sigframe_siginfo {
167 int sf_ra; /* return address for handler */
168 int sf_signum; /* "signum" argument for handler */
169 siginfo_t *sf_sip; /* "sip" argument for handler */
170 ucontext_t *sf_ucp; /* "ucp" argument for handler */
171 siginfo_t sf_si; /* actual saved siginfo */
172 ucontext_t sf_uc; /* actual saved ucontext */
173};
174
175#ifdef _KERNEL
176void *getframe(struct lwp *, int, int *);
177void buildcontext(struct lwp *, int, void *, void *);
178void sendsig_sigcontext(const ksiginfo_t *, const sigset_t *);
179#define lwp_trapframe(l) ((l)->l_md.md_regs)
180#endif
181
182#endif /* _I386_FRAME_H_ */