signal.h revision 1.24 
1/*	$NetBSD: signal.h,v 1.24 2003/09/27 03:14:31 christos 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#define __HAVE_SIGINFO
42#ifdef COMPAT_16
43#define SIGTRAMP_VALID(vers)	((unsigned)(vers) <= 2)
44#else
45#define SIGTRAMP_VALID(vers)	((vers) == 2)
46#endif
47
48#if defined(_NETBSD_SOURCE)
49/*
50 * Get the "code" values
51 */
52#include <machine/trap.h>
53
54/*
55 * Information pushed on stack when a signal is delivered.
56 * This is used by the kernel to restore state following
57 * execution of the signal handler.  It is also made available
58 * to the handler to allow it to restore state properly if
59 * a non-standard exit is performed.
60 */
61#if defined(__LIBC12_SOURCE__) || defined(_KERNEL)
62struct sigcontext13 {
63	int	sc_gs;
64	int	sc_fs;
65	int	sc_es;
66	int	sc_ds;
67	int	sc_edi;
68	int	sc_esi;
69	int	sc_ebp;
70	int	sc_ebx;
71	int	sc_edx;
72	int	sc_ecx;
73	int	sc_eax;
74	/* XXX */
75	int	sc_eip;
76	int	sc_cs;
77	int	sc_eflags;
78	int	sc_esp;
79	int	sc_ss;
80
81	int	sc_onstack;		/* sigstack state to restore */
82	int	sc_mask;		/* signal mask to restore (old style) */
83
84	int	sc_trapno;		/* XXX should be above */
85	int	sc_err;
86};
87#endif
88
89/*
90 * We expose this to userland for legacy interfaces, but only use
91 * it in the kernel for compat code.
92 */
93struct sigcontext {
94	int	sc_gs;
95	int	sc_fs;
96	int	sc_es;
97	int	sc_ds;
98	int	sc_edi;
99	int	sc_esi;
100	int	sc_ebp;
101	int	sc_ebx;
102	int	sc_edx;
103	int	sc_ecx;
104	int	sc_eax;
105	/* XXX */
106	int	sc_eip;
107	int	sc_cs;
108	int	sc_eflags;
109	int	sc_esp;
110	int	sc_ss;
111
112	int	sc_onstack;		/* sigstack state to restore */
113	int	__sc_mask13;		/* signal mask to restore (old style) */
114
115	int	sc_trapno;		/* XXX should be above */
116	int	sc_err;
117
118	sigset_t sc_mask;		/* signal mask to restore (new style) */
119};
120
121#define sc_sp sc_esp
122#define sc_fp sc_ebp
123#define sc_pc sc_eip
124#define sc_ps sc_eflags
125
126#endif	/* _NETBSD_SOURCE */
127#endif	/* !_I386_SIGNAL_H_ */
128