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/* $FreeBSD$ */
/* 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 _ALPHA_SIGNAL_H_
#define _ALPHA_SIGNAL_H_
typedef long sig_atomic_t;
#ifndef _ANSI_SOURCE
/*
* 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.
*/
typedef unsigned int osigset_t;
struct osigcontext {
long sc_onstack; /* sigstack state to restore */
long sc_mask; /* signal mask to restore */
long sc_pc; /* pc to restore */
long sc_ps; /* ps to restore */
unsigned long sc_regs[32]; /* integer register set (see above) */
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_xxx1[2]; /* sc_ssize, sc_sbase on DUX */
unsigned long sc_traparg_a0; /* a0 argument to trap at exception */
unsigned long sc_traparg_a1; /* a1 argument to trap at exception */
unsigned long sc_traparg_a2; /* a2 argument to trap at exception */
long sc_xxx2[3]; /* sc_fp_trap_pc, sc_fp_trigger_sum, sc_fp_trigger_inst */
};
/*
* The sequence of the fields should match those in
* mcontext_t. Keep them in sync!
*/
struct sigcontext {
sigset_t sc_mask; /* signal mask to restore */
long sc_onstack; /* sigstack state to restore */
unsigned long sc_regs[32]; /* integer register set (see above) */
long sc_ps; /* ps to restore */
long sc_pc; /* pc to restore */
unsigned long sc_traparg_a0; /* a0 argument to trap at exception */
unsigned long sc_traparg_a1; /* a1 argument to trap at exception */
unsigned long sc_traparg_a2; /* a2 argument to trap at exception */
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_ownedfp; /* fp has been used */
long sc_xxx1[2]; /* sc_ssize, sc_sbase on DUX */
long sc_xxx2[3]; /* sc_fp_trap_pc, sc_fp_trigger_sum, sc_fp_trigger_inst */
long sc_reserved[2]; /* XXX */
};
#define sc_sp sc_regs[R_SP]
#endif /* !_ANSI_SOURCE */
#endif /* !_ALPHA_SIGNAL_H_*/
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