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signal.h revision 1.7 
      1 /*	$NetBSD: signal.h,v 1.7 2003/01/18 06:23:29 thorpej 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 typedef int sig_atomic_t;
     37 
     38 #if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE) && \
     39     !defined(_XOPEN_SOURCE)
     40 #include <machine/frame.h>
     41 
     42 #if defined(__LIBC12_SOURCE__) || defined(_KERNEL)
     43 struct sigcontext13 {
     44 	int sc_onstack;			/* saved onstack flag */
     45 	int sc_mask;			/* saved signal mask (old style) */
     46 	struct trapframe sc_frame;	/* saved registers */
     47 };
     48 #endif /* __LIBC12_SOURCE__ || _KERNEL */
     49 
     50 struct sigcontext {
     51 	int sc_onstack;			/* saved onstack flag */
     52 	int __sc_mask13;		/* saved signal mask (old style) */
     53 	struct trapframe sc_frame;	/* saved registers */
     54 	sigset_t sc_mask;		/* saved signal mask (new style) */
     55 };
     56 
     57 /*
     58  * The following macros are used to convert from a ucontext to sigcontext,
     59  * and vice-versa.  This is for building a sigcontext to deliver to old-style
     60  * signal handlers, and converting back (in the event the handler modifies
     61  * the context).
     62  */
     63 #define	_MCONTEXT_TO_SIGCONTEXT(uc, sc)					\
     64 do {									\
     65 	memcpy((sc)->sc_frame.fixreg, &(uc)->uc_mcontext.__gregs.__r_r0,\
     66 	    sizeof((sc)->sc_frame.fixreg));				\
     67 	(sc)->sc_frame.lr     = (uc)->uc_mcontext.__gregs.__r_lr;	\
     68 	(sc)->sc_frame.cr     = (uc)->uc_mcontext.__gregs.__r_cr;	\
     69 	(sc)->sc_frame.xer    = (uc)->uc_mcontext.__gregs.__r_xer;	\
     70 	(sc)->sc_frame.ctr    = (uc)->uc_mcontext.__gregs.__r_ctr;	\
     71 	(sc)->sc_frame.srr0   = (uc)->uc_mcontext.__gregs.__r_pc;	\
     72 	(sc)->sc_frame.srr1   = (uc)->uc_mcontext.__gregs.__r_msr;	\
     73 	(sc)->sc_frame.dar    = 0;					\
     74 	(sc)->sc_frame.dsisr  = 0;					\
     75 	(sc)->sc_frame.exc    = 0;					\
     76 	(sc)->sc_frame.vrsave = (uc)->uc_mcontext.__vrf.__vrsave;	\
     77 } while (/*CONSTCOND*/0)
     78 
     79 #define	_SIGCONTEXT_TO_MCONTEXT(sc, uc)					\
     80 do {									\
     81 	memcpy(&(uc)->uc_mcontext.__gregs.__r_r0, (sc)->sc_frame.fixreg,\
     82 	    sizeof((sc)->sc_frame.fixreg));				\
     83 	(uc)->uc_mcontext.__gregs.__r_lr  = (sc)->sc_frame.lr;		\
     84 	(uc)->uc_mcontext.__gregs.__r_cr  = (sc)->sc_frame.cr;		\
     85 	(uc)->uc_mcontext.__gregs.__r_xer = (sc)->sc_frame.xer;		\
     86 	(uc)->uc_mcontext.__gregs.__r_ctr = (sc)->sc_frame.ctr;		\
     87 	(uc)->uc_mcontext.__gregs.__r_pc  = (sc)->sc_frame.srr0;	\
     88 	(uc)->uc_mcontext.__gregs.__r_msr = (sc)->sc_frame.srr1;	\
     89 	(uc)->uc_mcontext.__vrf.__vrsave  = (sc)->sc_frame.vrsave;	\
     90 } while (/*CONSTCOND*/0)
     91 
     92 struct sigframe {
     93 	struct sigcontext sf_sc;
     94 };
     95 #endif	/* !_ANSI_SOURCE && !_POSIX_C_SOURCE && !_XOPEN_SOURCE */
     96 #endif	/* !_POWERPC_SIGNAL_H_ */
     97