xref: /netbsd/sys/arch/m68k/include/signal.h (revision c4a72b64)
1 /*	$NetBSD: signal.h,v 1.10 2002/07/04 01:50:39 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 
41 typedef 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)
58 struct 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 
69 struct 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 #include <m68k/frame.h>
82 
83 /*
84  * Register state saved while kernel delivers a signal.
85  */
86 struct sigstate {
87 	int	ss_flags;		/* which of the following are valid */
88 	struct frame ss_frame;		/* original exception frame */
89 	struct fpframe ss_fpstate;	/* 68881/68882 state info */
90 };
91 
92 #define	SS_RTEFRAME	0x01
93 #define	SS_FPSTATE	0x02
94 #define	SS_USERREGS	0x04
95 
96 /*
97  * Stack frame layout when delivering a signal.
98  */
99 struct sigframe {
100 	int	sf_ra;			/* handler return address */
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 	struct sigcontext sf_sc;	/* actual context */
105 	struct sigstate sf_state;	/* state of the hardware */
106 };
107 #endif /* _KERNEL && __M68K_SIGNAL_PRIVATE */
108 
109 #endif	/* !_ANSI_SOURCE && !_POSIX_C_SOURCE && !_XOPEN_SOURCE */
110 #endif	/* !_M68K_SIGNAL_H_ */
111