/* $FreeBSD$ */
/* From: NetBSD: signal.h,v 1.3 1997/04/06 08:47:43 cgd Exp */

/*-
 * Copyright (c) 1994, 1995 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Chris G. Demetriou
 * 
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

#ifndef _MACHINE_SIGNAL_H_
#define	_MACHINE_SIGNAL_H_

#include <sys/cdefs.h>
#include <sys/_sigset.h>

typedef long	sig_atomic_t;

#if __BSD_VISIBLE
/* portable macros for SIGFPE/ARITHTRAP */
#define FPE_INTOVF	1	/* integer overflow */
#define FPE_INTDIV	2	/* integer divide by zero */
#define FPE_FLTDIV	3	/* floating point divide by zero */
#define FPE_FLTOVF	4	/* floating point overflow */
#define FPE_FLTUND	5	/* floating point underflow */
#define FPE_FLTRES	6	/* floating point inexact result */
#define FPE_FLTINV	7	/* invalid floating point operation */
#define FPE_FLTSUB	8	/* subscript out of range */

#define BUS_SEGM_FAULT	30	/* segment protection base */
#endif

/*
 * Information pushed on stack when a signal is delivered.
 * This is used by the kernel to restore state following
 * execution of the signal handler.  It is also made available
 * to the handler to allow it to restore state properly if
 * a non-standard exit is performed.
 */

#if __BSD_VISIBLE
#include <machine/_regset.h>

/*
 * The sequence of the fields should match those in
 * mcontext_t. Keep them in sync!
 */
struct sigcontext {
	struct __sigset		sc_mask;	/* signal mask to restore */
	unsigned long		sc_onstack;
	unsigned long		sc_flags;
	struct _special		sc_special;
	struct _callee_saved	sc_preserved;
	struct _callee_saved_fp	sc_preserved_fp;
	struct _caller_saved	sc_scratch;
	struct _caller_saved_fp	sc_scratch_fp;
	struct _high_fp		sc_high_fp;
};
#endif /* __BSD_VISIBLE */

#endif /* !_MACHINE_SIGNAL_H_*/