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signal.h revision 1.23 
      1 /*	$NetBSD: signal.h,v 1.23 2021/10/29 04:13:39 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  *
     31  *	@(#)signal.h	7.16 (Berkeley) 3/17/91
     32  */
     33 
     34  /* All bugs are subject to removal without further notice */
     35 
     36 #ifndef _VAX_SIGNAL_H_
     37 #define _VAX_SIGNAL_H_
     38 
     39 #include <sys/featuretest.h>
     40 #include <sys/siginfo.h>
     41 #include <machine/trap.h>
     42 
     43 #define	__HAVE_STRUCT_SIGCONTEXT
     44 
     45 /* VAX versioned its sigcontext trampoline ABI (Sept 2002). */
     46 #define __SIGTRAMP_SIGCONTEXT_VERSION_MAX	2
     47 #define __SIGTRAMP_SIGCONTEXT_VERSION		2
     48 
     49 #define	__SIGTRAMP_SIGINFO_VERSION_MIN		3
     50 #define	__SIGTRAMP_SIGINFO_VERSION_MAX		3
     51 #define	__SIGTRAMP_SIGINFO_VERSION		3
     52 
     53 typedef int sig_atomic_t;
     54 
     55 #if defined(_NETBSD_SOURCE)
     56 #include <sys/sigtypes.h>
     57 /*
     58  * Information pushed on stack when a signal is delivered.
     59  * This is used by the kernel to restore state following
     60  * execution of the signal handler.  It is also made available
     61  * to the handler to allow it to restore state properly if
     62  * a non-standard exit is performed.
     63  */
     64 #if defined(_LIBC) || defined(_KERNEL)
     65 struct sigcontext13 {
     66 	int	sc_onstack;		/* sigstack state to restore */
     67 	int	sc_mask;		/* signal mask to restore (old style) */
     68 	int	sc_sp;			/* sp to restore */
     69 	int	sc_fp;			/* fp to restore */
     70 	int	sc_ap;			/* ap to restore */
     71 	int	sc_pc;			/* pc to restore */
     72 	int	sc_ps;			/* psl to restore */
     73 };
     74 
     75 struct sigcontext {
     76 	int	sc_onstack;		/* sigstack state to restore */
     77 	int	__sc_mask13;		/* signal mask to restore (old style) */
     78 	int	sc_sp;			/* sp to restore */
     79 	int	sc_fp;			/* fp to restore */
     80 	int	sc_ap;			/* ap to restore */
     81 	int	sc_pc;			/* pc to restore */
     82 	int	sc_ps;			/* psl to restore */
     83 	sigset_t sc_mask;		/* signal mask to restore (new style) */
     84 };
     85 #endif /* _LIBC || _KERNEL */
     86 
     87 #ifdef _KERNEL
     88 #define sendsig_sigcontext	sendsig_sighelper
     89 #define sendsig_siginfo		sendsig_sighelper
     90 
     91 void sendsig_context(int, const sigset_t *, u_long);
     92 
     93 /* Avoid a cyclic dependency and don't use ksiginfo_t here. */
     94 struct ksiginfo;
     95 
     96 #if defined(COMPAT_13) || defined(COMPAT_ULTRIX)
     97 struct otrampframe {
     98 	unsigned sig;	/* Signal number */
     99 	unsigned code;	/* Info code */
    100 	vaddr_t	scp;	/* Pointer to struct sigcontext */
    101 	unsigned r0, r1, r2, r3, r4, r5; /* Registers saved when interrupt */
    102 	register_t pc;	/* Address of signal handler */
    103 	vaddr_t	arg;	/* Pointer to first (and only) sigreturn argument */
    104 };
    105 
    106 vaddr_t setupstack_oldsigcontext(const struct ksiginfo *, const sigset_t *,
    107 	int, struct lwp *, struct trapframe *, vaddr_t, int, vaddr_t);
    108 #endif /* COMPAT_13 || COMPAT_ULTRIX */
    109 
    110 #if defined(COMPAT_16) || defined(COMPAT_ULTRIX)
    111 struct trampoline2 {
    112 	unsigned int narg;	/* Argument count (== 3) */
    113 	unsigned int sig;	/* Signal number */
    114 	unsigned int code;	/* Info code */
    115 	vaddr_t scp;		/* Pointer to struct sigcontext */
    116 };
    117 
    118 vaddr_t setupstack_sigcontext2(const struct ksiginfo *, const sigset_t *,
    119 	int, struct lwp *, struct trapframe *, vaddr_t, int, vaddr_t);
    120 #endif /* COMPAT_16 || COMPAT_ULTRIX */
    121 
    122 #endif	/* _KERNEL */
    123 
    124 #endif	/* _NETBSD_SOURCE */
    125 #endif	/* !_VAX_SIGNAL_H_ */
    126