signal.h revision 1.4 
1/*	$NetBSD: signal.h,v 1.4 2003/10/18 18:34:09 briggs 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 _AMD64_SIGNAL_H_
35#define _AMD64_SIGNAL_H_
36
37#include <sys/featuretest.h>
38
39typedef int sig_atomic_t;
40
41#if defined(_NETBSD_SOURCE)
42/*
43 * Get the "code" values
44 */
45#include <machine/trap.h>
46#include <machine/fpu.h>
47#include <machine/mcontext.h>
48
49/*
50 * Information pushed on stack when a signal is delivered.
51 * This is used by the kernel to restore state following
52 * execution of the signal handler.  It is also made available
53 * to the handler to allow it to restore state properly if
54 * a non-standard exit is performed.
55 */
56struct sigcontext {
57	struct fxsave64 *sc_fpstate;
58	u_int64_t	sc_onstack;
59	sigset_t	sc_mask;
60	mcontext_t	sc_mcontext;
61};
62
63#define _MCONTEXT_TO_SIGCONTEXT(uc, sc) 				\
64do {									\
65	memcpy(&(sc)->sc_mcontext.__gregs, &(uc)->uc_mcontext.__gregs,	\
66	    sizeof ((uc)->uc_mcontext.__gregs));			\
67	if ((uc)->uc_flags & _UC_FPU) {					\
68		memcpy(&(sc)->sc_mcontext.__fpregs,			\
69		    &(uc)->uc_mcontext.__fpregs,			\
70		    sizeof ((uc)->uc_mcontext.__fpregs));		\
71	}								\
72} while (/*CONSTCOND*/0)
73
74#define _SIGCONTEXT_TO_MCONTEXT(sc, uc)					\
75do {									\
76	memcpy(&(uc)->uc_mcontext.__gregs, &(sc)->sc_mcontext.__gregs,	\
77	    sizeof ((uc)->uc_mcontext.__gregs));			\
78	if ((uc)->uc_flags & _UC_FPU) {					\
79		memcpy(&(uc)->uc_mcontext.__fpregs,			\
80		    &(sc)->sc_mcontext.__fpregs,			\
81		    sizeof ((uc)->uc_mcontext.__fpregs));		\
82	}								\
83} while (/*CONSTCOND*/0)
84
85#ifdef COMPAT_16
86#define SIGTRAMP_VALID(vers)	((unsigned)(vers) <= 2)
87#else
88#define SIGTRAMP_VALID(vers)	((vers) == 2)
89#endif
90
91#endif	/* _NETBSD_SOURCE */
92#endif	/* !_AMD64_SIGNAL_H_ */
93