1 /* $OpenBSD: signal.h,v 1.9 2015/11/07 19:06:05 miod Exp $ */ 2 /* $NetBSD: signal.h,v 1.2 1995/02/16 03:08:08 cgd Exp $ */ 3 4 /* 5 * Copyright (c) 1994, 1995 Carnegie-Mellon University. 6 * All rights reserved. 7 * 8 * Author: Chris G. Demetriou 9 * 10 * Permission to use, copy, modify and distribute this software and 11 * its documentation is hereby granted, provided that both the copyright 12 * notice and this permission notice appear in all copies of the 13 * software, derivative works or modified versions, and any portions 14 * thereof, and that both notices appear in supporting documentation. 15 * 16 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 17 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 18 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 19 * 20 * Carnegie Mellon requests users of this software to return to 21 * 22 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 23 * School of Computer Science 24 * Carnegie Mellon University 25 * Pittsburgh PA 15213-3890 26 * 27 * any improvements or extensions that they make and grant Carnegie the 28 * rights to redistribute these changes. 29 */ 30 31 #ifndef _MACHINE_SIGNAL_H_ 32 #define _MACHINE_SIGNAL_H_ 33 34 #include <sys/cdefs.h> 35 36 typedef int sig_atomic_t; 37 38 #if __BSD_VISIBLE || __XPG_VISIBLE >= 420 39 /* 40 * Information pushed on stack when a signal is delivered. 41 * This is used by the kernel to restore state following 42 * execution of the signal handler. It is also made available 43 * to the handler to allow it to restore state properly if 44 * a non-standard exit is performed. 45 * 46 * Note that sc_regs[] and sc_fpregs[]+sc_fpcr are inline 47 * representations of 'struct reg' and 'struct fpreg', respectively. 48 */ 49 struct sigcontext { 50 long __sc_unused; 51 long sc_mask; /* signal mask to restore */ 52 long sc_pc; /* pc to restore */ 53 long sc_ps; /* ps to restore */ 54 unsigned long sc_regs[32]; /* integer register set (see above) */ 55 #define sc_sp sc_regs[R_SP] 56 long sc_ownedfp; /* fp has been used */ 57 unsigned long sc_fpregs[32]; /* FP register set (see above) */ 58 unsigned long sc_fpcr; /* FP control register (see above) */ 59 unsigned long sc_fp_control; /* FP software control word */ 60 long sc_reserved[2]; /* XXX */ 61 long sc_xxx[8]; /* XXX */ 62 }; 63 #endif /* __BSD_VISIBLE || __XPG_VISIBLE >= 420 */ 64 #endif /* !_MACHINE_SIGNAL_H_*/ 65