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signal.h revision 1.14 
      1 /*	$NetBSD: signal.h,v 1.14 2003/09/25 22:22:36 matt Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
      5  * Copyright (C) 1995, 1996 TooLs GmbH.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by TooLs GmbH.
     19  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     28  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 #ifndef	_POWERPC_SIGNAL_H_
     34 #define	_POWERPC_SIGNAL_H_
     35 
     36 #define __HAVE_SIGINFO
     37 
     38 #ifndef _LOCORE
     39 #include <sys/featuretest.h>
     40 
     41 typedef int sig_atomic_t;
     42 
     43 #if defined(_NETBSD_SOURCE)
     44 #include <machine/frame.h>
     45 
     46 #if defined(__LIBC12_SOURCE__) || defined(_KERNEL)
     47 struct sigcontext13 {
     48 	int sc_onstack;			/* saved onstack flag */
     49 	int sc_mask;			/* saved signal mask (old style) */
     50 	struct utrapframe sc_frame;	/* saved registers */
     51 };
     52 #endif /* __LIBC12_SOURCE__ || _KERNEL */
     53 
     54 /*
     55  * struct sigcontext introduced in NetBSD 1.4
     56  */
     57 struct sigcontext {
     58 	int sc_onstack;			/* saved onstack flag */
     59 	int __sc_mask13;		/* saved signal mask (old style) */
     60 	struct utrapframe sc_frame;	/* saved registers */
     61 	sigset_t sc_mask;		/* saved signal mask (new style) */
     62 };
     63 
     64 #ifndef __HAVE_SIGINFO
     65 /*
     66  * The following macros are used to convert from a ucontext to sigcontext,
     67  * and vice-versa.  This is for building a sigcontext to deliver to old-style
     68  * signal handlers, and converting back (in the event the handler modifies
     69  * the context).
     70  */
     71 #define	_MCONTEXT_TO_SIGCONTEXT(uc, sc)					\
     72 do {									\
     73 	memcpy((sc)->sc_frame.fixreg, &(uc)->uc_mcontext.__gregs[_REG_R0], \
     74 	    sizeof((sc)->sc_frame.fixreg));				\
     75 	(sc)->sc_frame.cr     = (uc)->uc_mcontext.__gregs[_REG_CR];	\
     76 	(sc)->sc_frame.lr     = (uc)->uc_mcontext.__gregs[_REG_LR];	\
     77 	(sc)->sc_frame.srr0   = (uc)->uc_mcontext.__gregs[_REG_PC];	\
     78 	(sc)->sc_frame.srr1   = (uc)->uc_mcontext.__gregs[_REG_MSR];	\
     79 	(sc)->sc_frame.ctr    = (uc)->uc_mcontext.__gregs[_REG_CTR];	\
     80 	(sc)->sc_frame.xer    = (uc)->uc_mcontext.__gregs[_REG_XER];	\
     81 	(sc)->sc_frame.mq     = (uc)->uc_mcontext.__gregs[_REG_MQ];	\
     82 	(sc)->sc_frame.vrsave = (uc)->uc_mcontext.__vrf.__vrsave;	\
     83 	(sc)->sc_frame.spare  = 0;					\
     84 } while (/*CONSTCOND*/0)
     85 
     86 #define	_SIGCONTEXT_TO_MCONTEXT(sc, uc)					\
     87 do {									\
     88 	memcpy(&(uc)->uc_mcontext.__gregs[_REG_R0], (sc)->sc_frame.fixreg, \
     89 	    sizeof((sc)->sc_frame.fixreg));				\
     90 	(uc)->uc_mcontext.__gregs[_REG_CR] = (sc)->sc_frame.cr;		\
     91 	(uc)->uc_mcontext.__gregs[_REG_LR] = (sc)->sc_frame.lr;		\
     92 	(uc)->uc_mcontext.__gregs[_REG_PC] = (sc)->sc_frame.srr0;	\
     93 	(uc)->uc_mcontext.__gregs[_REG_MSR] = (sc)->sc_frame.srr1;	\
     94 	(uc)->uc_mcontext.__gregs[_REG_CTR] = (sc)->sc_frame.ctr;	\
     95 	(uc)->uc_mcontext.__gregs[_REG_XER] = (sc)->sc_frame.xer;	\
     96 	(uc)->uc_mcontext.__gregs[_REG_MQ] = (sc)->sc_frame.mq;		\
     97 	(uc)->uc_mcontext.__vrf.__vrsave  = (sc)->sc_frame.vrsave;	\
     98 } while (/*CONSTCOND*/0)
     99 #endif /* !__HAVE_SIGINFO */
    100 
    101 #ifdef _KERNEL
    102 void	sendsig_sigcontext(int, const sigset_t *, u_long);
    103 #endif
    104 
    105 #endif	/* _NETBSD_SOURCE */
    106 #endif	/* !_LOCORE */
    107 #endif	/* !_POWERPC_SIGNAL_H_ */
    108