xref: /src/sys/arch/sparc/include/signal.h

/*	$NetBSD: signal.h,v 1.15 2003/10/26 08:08:07 christos Exp $ */

/*
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This software was developed by the Computer Systems Engineering group
 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
 * contributed to Berkeley.
 *
 * All advertising materials mentioning features or use of this software
 * must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Lawrence Berkeley Laboratory.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)signal.h	8.1 (Berkeley) 6/11/93
 */

#ifndef	_SPARC_SIGNAL_H_
#define _SPARC_SIGNAL_H_

#include <sys/featuretest.h>

#define __HAVE_SIGINFO

#ifndef _LOCORE
typedef int sig_atomic_t;
#endif

#if defined(_NETBSD_SOURCE)
#ifndef _LOCORE

/*
 * 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.
 *
 * All machines must have an sc_onstack and sc_mask.
 */
#if defined(__LIBC12_SOURCE__) || defined(_KERNEL)
struct sigcontext13 {
	int	sc_onstack;		/* sigstack state to restore */
	int	sc_mask;		/* signal mask to restore (old style) */
	/* begin machine dependent portion */
	long	sc_sp;			/* %sp to restore */
	long	sc_pc;			/* pc to restore */
	long	sc_npc;			/* npc to restore */
#ifdef __arch64__
	long	sc_tstate;		/* tstate to restore */
#else
	long	sc_psr;			/* psr to restore */
#endif
	long	sc_g1;			/* %g1 to restore */
	long	sc_o0;			/* %o0 to restore */
};
#endif /* __LIBC12_SOURCE__ || _KERNEL */
struct sigcontext {
	int		sc_onstack;	/* sigstack state to restore */
	int		__sc_mask13;	/* signal mask to restore (old style) */
	/* begin machine dependent portion */
	long		sc_sp;		/* %sp to restore */
	long		sc_pc;		/* pc to restore */
	long		sc_npc;		/* npc to restore */
#ifdef __arch64__
	long		sc_tstate;	/* tstate to restore */
#else
	long		sc_psr;		/* psr to restore */
#endif
	long		sc_g1;		/* %g1 to restore */
	long		sc_o0;		/* %o0 to restore */
	sigset_t	sc_mask;	/* signal mask to restore (new style) */
};

#ifdef COMPAT_16
#define	SIGTRAMP_VALID(vers)	((vers) <= 2)
#else
#define	SIGTRAMP_VALID(vers)	((vers) == 2)
#endif

#ifdef __arch64__
#define	_MCONTEXT_TO_SIGCONTEXT_32_64(uc, sc)				\
do {									\
	(sc)->sc_tstate =						\
	    ((uc)->uc_mcontext.__gregs[_REG_CCR] << TSTATE_CCR_SHIFT) |	\
	    ((uc)->uc_mcontext.__gregs[_REG_ASI] << TSTATE_ASI_SHIFT);	\
} while (/*CONSTCOND*/0)

#define	_SIGCONTEXT_TO_MCONTEXT_32_64(sc, uc)				\
do {									\
	(uc)->uc_mcontext.__gregs[_REG_CCR] =				\
	    ((sc)->sc_tstate & TSTATE_CCR) >> TSTATE_CCR_SHIFT;		\
	(uc)->uc_mcontext.__gregs[_REG_ASI] =				\
	    ((sc)->sc_tstate & TSTATE_ASI) >> TSTATE_ASI_SHIFT;		\
} while (/*CONSTCOND*/0)
#else /* ! __arch64__ */
#define	_MCONTEXT_TO_SIGCONTEXT_32_64(uc, sc)				\
do {									\
	(sc)->sc_psr = (uc)->uc_mcontext.__gregs[_REG_PSR];		\
} while (/*CONSTCOND*/0)

#define	_SIGCONTEXT_TO_MCONTEXT_32_64(sc, uc)				\
do {									\
	(uc)->uc_mcontext.__gregs[_REG_PSR] = (sc)->sc_psr;		\
} while (/*CONSTCOND*/0)
#endif /* __arch64__ */

#define	_MCONTEXT_TO_SIGCONTEXT(uc, sc)					\
do {									\
	(sc)->sc_sp  = (uc)->uc_mcontext.__gregs[_REG_O6];		\
	(sc)->sc_pc  = (uc)->uc_mcontext.__gregs[_REG_PC];		\
	(sc)->sc_npc = (uc)->uc_mcontext.__gregs[_REG_nPC];		\
	_MCONTEXT_TO_SIGCONTEXT_32_64((uc), (sc));			\
	(sc)->sc_g1  = (uc)->uc_mcontext.__gregs[_REG_G1];		\
	(sc)->sc_o0  = (uc)->uc_mcontext.__gregs[_REG_O0];		\
} while (/*CONSTCOND*/0)

#define	_SIGCONTEXT_TO_MCONTEXT(sc, uc)					\
do {									\
	(uc)->uc_mcontext.__gregs[_REG_O6]  = (sc)->sc_sp;		\
	(uc)->uc_mcontext.__gregs[_REG_PC]  = (sc)->sc_pc;		\
	(uc)->uc_mcontext.__gregs[_REG_nPC] = (sc)->sc_npc;		\
	_SIGCONTEXT_TO_MCONTEXT_32_64((sc), (uc));			\
	(uc)->uc_mcontext.__gregs[_REG_G1]  = (sc)->sc_g1;		\
	(uc)->uc_mcontext.__gregs[_REG_O0]  = (sc)->sc_o0;		\
} while (/*CONSTCOND*/0)

#else /* _LOCORE */
/* XXXXX These values don't work for _LP64 */
#define	SC_SP_OFFSET	8
#define	SC_PC_OFFSET	12
#define	SC_NPC_OFFSET	16
#define	SC_PSR_OFFSET	20
#define	SC_G1_OFFSET	24
#define	SC_O0_OFFSET	28
#endif /* _LOCORE */

/*
 * `Code' arguments to signal handlers.  The names, and the funny numbering.
 * are defined so as to match up with what SunOS uses; I have no idea why
 * they did the numbers that way, except maybe to match up with the 68881.
 */
#define	FPE_INTOVF_TRAP		0x01	/* integer overflow */
#define	FPE_INTDIV_TRAP		0x14	/* integer divide by zero */
#define	FPE_FLTINEX_TRAP	0xc4	/* inexact */
#define	FPE_FLTDIV_TRAP		0xc8	/* divide by zero */
#define	FPE_FLTUND_TRAP		0xcc	/* underflow */
#define	FPE_FLTOPERR_TRAP	0xd0	/* operand error */
#define	FPE_FLTOVF_TRAP		0xd4	/* overflow */

#endif	/* _NETBSD_SOURCE */
#endif	/* !_SPARC_SIGNAL_H_ */