signal.h revision 1.3 
1/* $NetBSD: signal.h,v 1.3 1997/04/06 08:47:43 cgd Exp $ */
2
3/*
4 * Copyright (c) 1994, 1995 Carnegie-Mellon University.
5 * All rights reserved.
6 *
7 * Author: Chris G. Demetriou
8 *
9 * Permission to use, copy, modify and distribute this software and
10 * its documentation is hereby granted, provided that both the copyright
11 * notice and this permission notice appear in all copies of the
12 * software, derivative works or modified versions, and any portions
13 * thereof, and that both notices appear in supporting documentation.
14 *
15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
16 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
18 *
19 * Carnegie Mellon requests users of this software to return to
20 *
21 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
22 *  School of Computer Science
23 *  Carnegie Mellon University
24 *  Pittsburgh PA 15213-3890
25 *
26 * any improvements or extensions that they make and grant Carnegie the
27 * rights to redistribute these changes.
28 */
29
30#ifndef _ALPHA_SIGNAL_H_
31#define	_ALPHA_SIGNAL_H_
32
33typedef long	sig_atomic_t;
34
35#ifndef _ANSI_SOURCE
36/*
37 * Information pushed on stack when a signal is delivered.
38 * This is used by the kernel to restore state following
39 * execution of the signal handler.  It is also made available
40 * to the handler to allow it to restore state properly if
41 * a non-standard exit is performed.
42 *
43 * Note that sc_regs[] and sc_fpregs[]+sc_fpcr are inline
44 * representations of 'struct reg' and 'struct fpreg', respectively.
45 */
46struct  sigcontext {
47	long	sc_onstack;             /* sigstack state to restore */
48	long	sc_mask;                /* signal mask to restore */
49	long	sc_pc;                  /* pc to restore */
50	long	sc_ps;			/* ps to restore */
51	unsigned long sc_regs[32];	/* integer register set (see above) */
52#define	sc_sp	sc_regs[R_SP]
53	long	sc_ownedfp;		/* fp has been used */
54	unsigned long sc_fpregs[32];	/* FP register set (see above) */
55	unsigned long sc_fpcr;		/* FP control register (see above) */
56	unsigned long sc_fp_control;	/* FP software control word */
57	long	sc_reserved[2];		/* XXX */
58	long	sc_xxx[8];		/* XXX */
59};
60
61#endif /* !_ANSI_SOURCE */
62#endif /* !_ALPHA_SIGNAL_H_*/
63