signal.h revision 1.1 
1/*	$NetBSD: signal.h,v 1.1 2003/04/26 18:39:48 fvdl 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
41typedef int sig_atomic_t;
42
43#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \
44    !defined(_XOPEN_SOURCE)
45/*
46 * Get the "code" values
47 */
48#include <machine/trap.h>
49#include <machine/fpu.h>
50#include <machine/mcontext.h>
51
52/*
53 * Information pushed on stack when a signal is delivered.
54 * This is used by the kernel to restore state following
55 * execution of the signal handler.  It is also made available
56 * to the handler to allow it to restore state properly if
57 * a non-standard exit is performed.
58 */
59struct sigcontext {
60	struct fxsave64 *sc_fpstate;
61	u_int64_t	sc_onstack;
62	sigset_t	sc_mask;
63	mcontext_t	sc_mcontext;
64};
65
66#define _MCONTEXT_TO_SIGCONTEXT(uc, sc) 				\
67do {									\
68	memcpy(&(sc)->sc_mcontext.__gregs, &(uc)->uc_mcontext.__gregs,	\
69	    sizeof ((uc)->uc_mcontext.__gregs));			\
70	if ((uc)->uc_flags & _UC_FPU) {					\
71		memcpy(&(sc)->sc_mcontext.__fpregs,			\
72		    &(uc)->uc_mcontext.__fpregs,			\
73		    sizeof ((uc)->uc_mcontext.__fpregs));		\
74	}								\
75} while (/*CONSTCOND*/0)
76
77#define _SIGCONTEXT_TO_MCONTEXT(sc, uc)					\
78do {									\
79	memcpy(&(uc)->uc_mcontext.__gregs, &(sc)->sc_mcontext.__gregs,	\
80	    sizeof ((uc)->uc_mcontext.__gregs));			\
81	if ((uc)->uc_flags & _UC_FPU) {					\
82		memcpy(&(uc)->uc_mcontext.__fpregs,			\
83		    &(sc)->sc_mcontext.__fpregs,			\
84		    sizeof ((uc)->uc_mcontext.__fpregs));		\
85	}								\
86} while (/*CONSTCOND*/0)
87
88#endif	/* !_ANSI_SOURCE && !_POSIX_C_SOURCE && !_XOPEN_SOURCE */
89#endif	/* !_AMD64_SIGNAL_H_ */
90