signal.h revision 1.26 
1/*	$NetBSD: signal.h,v 1.26 2004/05/10 21:51:50 drochner Exp $	*/
2
3/*
4 * Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 *	@(#)signal.h	7.16 (Berkeley) 3/17/91
32 */
33
34#ifndef _I386_SIGNAL_H_
35#define _I386_SIGNAL_H_
36
37#include <sys/featuretest.h>
38
39typedef int sig_atomic_t;
40
41#ifdef _KERNEL
42#ifdef COMPAT_16
43#define SIGTRAMP_VALID(vers)	((unsigned)(vers) <= 2)
44#else
45#define SIGTRAMP_VALID(vers)	((vers) == 2)
46#endif
47#endif
48
49#if defined(_NETBSD_SOURCE)
50/*
51 * Get the "code" values
52 */
53#include <machine/trap.h>
54
55/*
56 * Information pushed on stack when a signal is delivered.
57 * This is used by the kernel to restore state following
58 * execution of the signal handler.  It is also made available
59 * to the handler to allow it to restore state properly if
60 * a non-standard exit is performed.
61 */
62#if defined(__LIBC12_SOURCE__) || defined(_KERNEL)
63struct sigcontext13 {
64	int	sc_gs;
65	int	sc_fs;
66	int	sc_es;
67	int	sc_ds;
68	int	sc_edi;
69	int	sc_esi;
70	int	sc_ebp;
71	int	sc_ebx;
72	int	sc_edx;
73	int	sc_ecx;
74	int	sc_eax;
75	/* XXX */
76	int	sc_eip;
77	int	sc_cs;
78	int	sc_eflags;
79	int	sc_esp;
80	int	sc_ss;
81
82	int	sc_onstack;		/* sigstack state to restore */
83	int	sc_mask;		/* signal mask to restore (old style) */
84
85	int	sc_trapno;		/* XXX should be above */
86	int	sc_err;
87};
88#endif
89
90/*
91 * We expose this to userland for legacy interfaces, but only use
92 * it in the kernel for compat code.
93 */
94struct sigcontext {
95	int	sc_gs;
96	int	sc_fs;
97	int	sc_es;
98	int	sc_ds;
99	int	sc_edi;
100	int	sc_esi;
101	int	sc_ebp;
102	int	sc_ebx;
103	int	sc_edx;
104	int	sc_ecx;
105	int	sc_eax;
106	/* XXX */
107	int	sc_eip;
108	int	sc_cs;
109	int	sc_eflags;
110	int	sc_esp;
111	int	sc_ss;
112
113	int	sc_onstack;		/* sigstack state to restore */
114	int	__sc_mask13;		/* signal mask to restore (old style) */
115
116	int	sc_trapno;		/* XXX should be above */
117	int	sc_err;
118
119	sigset_t sc_mask;		/* signal mask to restore (new style) */
120};
121
122#define sc_sp sc_esp
123#define sc_fp sc_ebp
124#define sc_pc sc_eip
125#define sc_ps sc_eflags
126
127#endif	/* _NETBSD_SOURCE */
128#endif	/* !_I386_SIGNAL_H_ */
129