signal.h revision 1.7 
1/*	$NetBSD: signal.h,v 1.7 1998/09/30 21:04:49 thorpej 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 _M68K_SIGNAL_H_
39#define _M68K_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
50/*
51 * Information pushed on stack when a signal is delivered.
52 * This is used by the kernel to restore state following
53 * execution of the signal handler.  It is also made available
54 * to the handler to allow it to restore state properly if
55 * a non-standard exit is performed.
56 */
57#if defined(__LIBC12_SOURCE__) || defined(_KERNEL)
58struct sigcontext13 {
59	int	sc_onstack;		/* sigstack state to restore */
60	int	sc_mask;		/* signal mask to restore (old style) */
61	int	sc_sp;			/* sp to restore */
62	int	sc_fp;			/* fp to restore */
63	int	sc_ap;			/* ap to restore */
64	int	sc_pc;			/* pc to restore */
65	int	sc_ps;			/* psl to restore */
66};
67#endif /* __LIBC12_SOURCE__ || _KERNEL */
68
69struct sigcontext {
70	int	sc_onstack;		/* sigstack state to restore */
71	int	__sc_mask13;		/* signal mask to restore (old style) */
72	int	sc_sp;			/* sp to restore */
73	int	sc_fp;			/* fp to restore */
74	int	sc_ap;			/* ap to restore */
75	int	sc_pc;			/* pc to restore */
76	int	sc_ps;			/* psl to restore */
77	sigset_t sc_mask;		/* signal mask to restore (new style) */
78};
79
80#if defined(_KERNEL) && defined(__M68K_SIGNAL_PRIVATE)
81/*
82 * Register state saved while kernel delivers a signal.
83 */
84struct sigstate {
85	int	ss_flags;		/* which of the following are valid */
86	struct frame ss_frame;		/* original exception frame */
87	struct fpframe ss_fpstate;	/* 68881/68882 state info */
88};
89
90#define	SS_RTEFRAME	0x01
91#define	SS_FPSTATE	0x02
92#define	SS_USERREGS	0x04
93
94/*
95 * Stack frame layout when delivering a signal.
96 *
97 * WARNING: code in locore.s assumes the layout shown for sf_signum
98 * thru sf_handler, so... don't screw with them!
99 */
100struct sigframe {
101	int	sf_signum;		/* signal number for handler */
102	int	sf_code;		/* additional info for handler */
103	struct sigcontext *sf_scp;	/* context pointer for handler */
104	sig_t	sf_handler;		/* handler address for u_sigc */
105	struct sigstate sf_state;	/* state of the hardware */
106	struct sigcontext sf_sc;	/* actual context */
107};
108#endif /* _KERNEL && __M68K_SIGNAL_PRIVATE */
109
110#endif	/* !_ANSI_SOURCE && !_POSIX_C_SOURCE && !_XOPEN_SOURCE */
111#endif	/* !_M68K_SIGNAL_H_ */
112