/*      $OpenBSD: signal.h,v 1.11 2025/06/29 15:55:21 miod Exp $        */
/*      $NetBSD: signal.h,v 1.2 1995/02/16 03:08:08 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>

typedef int     sig_atomic_t;

#if __BSD_VISIBLE || __XPG_VISIBLE >= 420
/*
 * 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.
 *
 * Note that sc_regs[] and sc_fpregs[]+sc_fpcr are inline
 * representations of 'struct reg' and 'struct fpreg', respectively.
 */
struct  sigcontext {
        long    sc_cookie;
        long    sc_mask;                /* signal mask to restore XXX should be int */
        long    sc_pc;                  /* pc to restore */
        long    sc_ps;                  /* ps to restore */
        unsigned long sc_regs[32];      /* integer register set (see above) */
#define sc_sp   sc_regs[R_SP]
        long    sc_ownedfp;             /* fp has been used */
        unsigned long sc_fpregs[32];    /* FP register set (see above) */
        unsigned long sc_fpcr;          /* FP control register (see above) */
        unsigned long sc_fp_control;    /* FP software control word */
        long    sc_reserved[2];         /* XXX */
        long    sc_xxx[8];              /* XXX */
};
#endif /* __BSD_VISIBLE || __XPG_VISIBLE >= 420 */
#endif /* !_MACHINE_SIGNAL_H_*/