signal.h revision 1.2 
1/*	$NetBSD: signal.h,v 1.2 2003/04/28 23:16:17 bjh21 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. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *	This product includes software developed by the University of
18 *	California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 *	@(#)signal.h	7.16 (Berkeley) 3/17/91
36 */
37
38#ifndef _AMD64_SIGNAL_H_
39#define _AMD64_SIGNAL_H_
40
41#include <sys/featuretest.h>
42
43typedef int sig_atomic_t;
44
45#if defined(_NETBSD_SOURCE)
46/*
47 * Get the "code" values
48 */
49#include <machine/trap.h>
50#include <machine/fpu.h>
51#include <machine/mcontext.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 */
60struct sigcontext {
61	struct fxsave64 *sc_fpstate;
62	u_int64_t	sc_onstack;
63	sigset_t	sc_mask;
64	mcontext_t	sc_mcontext;
65};
66
67#define _MCONTEXT_TO_SIGCONTEXT(uc, sc) 				\
68do {									\
69	memcpy(&(sc)->sc_mcontext.__gregs, &(uc)->uc_mcontext.__gregs,	\
70	    sizeof ((uc)->uc_mcontext.__gregs));			\
71	if ((uc)->uc_flags & _UC_FPU) {					\
72		memcpy(&(sc)->sc_mcontext.__fpregs,			\
73		    &(uc)->uc_mcontext.__fpregs,			\
74		    sizeof ((uc)->uc_mcontext.__fpregs));		\
75	}								\
76} while (/*CONSTCOND*/0)
77
78#define _SIGCONTEXT_TO_MCONTEXT(sc, uc)					\
79do {									\
80	memcpy(&(uc)->uc_mcontext.__gregs, &(sc)->sc_mcontext.__gregs,	\
81	    sizeof ((uc)->uc_mcontext.__gregs));			\
82	if ((uc)->uc_flags & _UC_FPU) {					\
83		memcpy(&(uc)->uc_mcontext.__fpregs,			\
84		    &(sc)->sc_mcontext.__fpregs,			\
85		    sizeof ((uc)->uc_mcontext.__fpregs));		\
86	}								\
87} while (/*CONSTCOND*/0)
88
89#endif	/* _NETBSD_SOURCE */
90#endif	/* !_AMD64_SIGNAL_H_ */
91