/*      $NetBSD: signal.h,v 1.23 2021/10/29 04:13:39 thorpej Exp $      */

/*
* Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California.
* All rights reserved.
*
* 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    7.16 (Berkeley) 3/17/91
*/

/* All bugs are subject to removal without further notice */

#ifndef _VAX_SIGNAL_H_
#define _VAX_SIGNAL_H_

#include <sys/featuretest.h>
#include <sys/siginfo.h>
#include <machine/trap.h>

#define __HAVE_STRUCT_SIGCONTEXT

/* VAX versioned its sigcontext trampoline ABI (Sept 2002). */
#define __SIGTRAMP_SIGCONTEXT_VERSION_MAX       2
#define __SIGTRAMP_SIGCONTEXT_VERSION           2

#define __SIGTRAMP_SIGINFO_VERSION_MIN          3
#define __SIGTRAMP_SIGINFO_VERSION_MAX          3
#define __SIGTRAMP_SIGINFO_VERSION              3

typedef int sig_atomic_t;

#if defined(_NETBSD_SOURCE)
#include <sys/sigtypes.h>
/*
* 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.
*/
#if defined(_LIBC) || defined(_KERNEL)
struct sigcontext13 {
       int     sc_onstack;             /* sigstack state to restore */
       int     sc_mask;                /* signal mask to restore (old style) */
       int     sc_sp;                  /* sp to restore */
       int     sc_fp;                  /* fp to restore */
       int     sc_ap;                  /* ap to restore */
       int     sc_pc;                  /* pc to restore */
       int     sc_ps;                  /* psl to restore */
};

struct sigcontext {
       int     sc_onstack;             /* sigstack state to restore */
       int     __sc_mask13;            /* signal mask to restore (old style) */
       int     sc_sp;                  /* sp to restore */
       int     sc_fp;                  /* fp to restore */
       int     sc_ap;                  /* ap to restore */
       int     sc_pc;                  /* pc to restore */
       int     sc_ps;                  /* psl to restore */
       sigset_t sc_mask;               /* signal mask to restore (new style) */
};
#endif /* _LIBC || _KERNEL */

#ifdef _KERNEL
#define sendsig_sigcontext      sendsig_sighelper
#define sendsig_siginfo         sendsig_sighelper

void sendsig_context(int, const sigset_t *, u_long);

/* Avoid a cyclic dependency and don't use ksiginfo_t here. */
struct ksiginfo;

#if defined(COMPAT_13) || defined(COMPAT_ULTRIX)
struct otrampframe {
       unsigned sig;   /* Signal number */
       unsigned code;  /* Info code */
       vaddr_t scp;    /* Pointer to struct sigcontext */
       unsigned r0, r1, r2, r3, r4, r5; /* Registers saved when interrupt */
       register_t pc;  /* Address of signal handler */
       vaddr_t arg;    /* Pointer to first (and only) sigreturn argument */
};

vaddr_t setupstack_oldsigcontext(const struct ksiginfo *, const sigset_t *,
       int, struct lwp *, struct trapframe *, vaddr_t, int, vaddr_t);
#endif /* COMPAT_13 || COMPAT_ULTRIX */

#if defined(COMPAT_16) || defined(COMPAT_ULTRIX)
struct trampoline2 {
       unsigned int narg;      /* Argument count (== 3) */
       unsigned int sig;       /* Signal number */
       unsigned int code;      /* Info code */
       vaddr_t scp;            /* Pointer to struct sigcontext */
};

vaddr_t setupstack_sigcontext2(const struct ksiginfo *, const sigset_t *,
       int, struct lwp *, struct trapframe *, vaddr_t, int, vaddr_t);
#endif /* COMPAT_16 || COMPAT_ULTRIX */

#endif  /* _KERNEL */

#endif  /* _NETBSD_SOURCE */
#endif  /* !_VAX_SIGNAL_H_ */