signal.h revision 1.25 
1/*	$NetBSD: signal.h,v 1.25 2004/03/26 21:39:57 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 COMPAT_16
42#define SIGTRAMP_VALID(vers)	((unsigned)(vers) <= 2)
43#else
44#define SIGTRAMP_VALID(vers)	((vers) == 2)
45#endif
46
47#if defined(_NETBSD_SOURCE)
48/*
49 * Get the "code" values
50 */
51#include <machine/trap.h>
52
53/*
54 * Information pushed on stack when a signal is delivered.
55 * This is used by the kernel to restore state following
56 * execution of the signal handler.  It is also made available
57 * to the handler to allow it to restore state properly if
58 * a non-standard exit is performed.
59 */
60#if defined(__LIBC12_SOURCE__) || defined(_KERNEL)
61struct sigcontext13 {
62	int	sc_gs;
63	int	sc_fs;
64	int	sc_es;
65	int	sc_ds;
66	int	sc_edi;
67	int	sc_esi;
68	int	sc_ebp;
69	int	sc_ebx;
70	int	sc_edx;
71	int	sc_ecx;
72	int	sc_eax;
73	/* XXX */
74	int	sc_eip;
75	int	sc_cs;
76	int	sc_eflags;
77	int	sc_esp;
78	int	sc_ss;
79
80	int	sc_onstack;		/* sigstack state to restore */
81	int	sc_mask;		/* signal mask to restore (old style) */
82
83	int	sc_trapno;		/* XXX should be above */
84	int	sc_err;
85};
86#endif
87
88/*
89 * We expose this to userland for legacy interfaces, but only use
90 * it in the kernel for compat code.
91 */
92struct sigcontext {
93	int	sc_gs;
94	int	sc_fs;
95	int	sc_es;
96	int	sc_ds;
97	int	sc_edi;
98	int	sc_esi;
99	int	sc_ebp;
100	int	sc_ebx;
101	int	sc_edx;
102	int	sc_ecx;
103	int	sc_eax;
104	/* XXX */
105	int	sc_eip;
106	int	sc_cs;
107	int	sc_eflags;
108	int	sc_esp;
109	int	sc_ss;
110
111	int	sc_onstack;		/* sigstack state to restore */
112	int	__sc_mask13;		/* signal mask to restore (old style) */
113
114	int	sc_trapno;		/* XXX should be above */
115	int	sc_err;
116
117	sigset_t sc_mask;		/* signal mask to restore (new style) */
118};
119
120#define sc_sp sc_esp
121#define sc_fp sc_ebp
122#define sc_pc sc_eip
123#define sc_ps sc_eflags
124
125#endif	/* _NETBSD_SOURCE */
126#endif	/* !_I386_SIGNAL_H_ */
127