/*      $NetBSD: linux_signal.h,v 1.10 2015/11/14 13:29:35 christos Exp $       */

/*-
 * Copyright (c) 1998 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Eric Haszlakiewicz.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

/*
 * Whoever decided how linux would handle
 * binary compatibility should be shot.
 */

#ifndef _ALPHA_LINUX_SIGNAL_H
#define _ALPHA_LINUX_SIGNAL_H

#define LINUX_SIGHUP     1
#define LINUX_SIGINT     2
#define LINUX_SIGQUIT    3
#define LINUX_SIGILL     4
#define LINUX_SIGTRAP    5
#define LINUX_SIGABRT    6
#define LINUX_SIGEMT     7
#define LINUX_SIGFPE     8
#define LINUX_SIGKILL    9
#define LINUX_SIGBUS    10
#define LINUX_SIGSEGV   11
#define LINUX_SIGSYS    12
#define LINUX_SIGPIPE   13
#define LINUX_SIGALRM   14
#define LINUX_SIGTERM   15
#define LINUX_SIGURG    16
#define LINUX_SIGSTOP   17
#define LINUX_SIGTSTP   18
#define LINUX_SIGCONT   19
#define LINUX_SIGCHLD   20
#define LINUX_SIGTTIN   21
#define LINUX_SIGTTOU   22
#define LINUX_SIGIO     23
#define LINUX_SIGXCPU   24
#define LINUX_SIGXFSZ   25
#define LINUX_SIGVTALRM 26
#define LINUX_SIGPROF   27
#define LINUX_SIGWINCH  28
#define LINUX_SIGINFO   29
#define LINUX_SIGUSR1   30
#define LINUX_SIGUSR2   31

#define LINUX_SIGIOT    LINUX_SIGABRT
#define LINUX_SIGPWR    LINUX_SIGINFO
#define LINUX_SIGPOLL   LINUX_SIGIO

/* Min/max real-time linux signal */
#define LINUX_SIGRTMIN          32
#define LINUX_SIGRTMAX          (LINUX__NSIG - 1)

#define LINUX__NSIG             64
#define LINUX__NSIG_BPW         64
#define LINUX__NSIG_WORDS       (LINUX__NSIG / LINUX__NSIG_BPW)
#define LINUX_NSIG              32

#define LINUX_MINSIGSTKSZ       4096

/* sa_flags */
#define LINUX_SA_ONSTACK        0x00000001
#define LINUX_SA_RESTART        0x00000002
#define LINUX_SA_NOCLDSTOP      0x00000004
#define LINUX_SA_NODEFER        0x00000008
#define LINUX_SA_RESETHAND      0x00000010
#define LINUX_SA_NOCLDWAIT      0x00000020
#define LINUX_SA_SIGINFO        0x00000040

#define LINUX_SA_NOMASK         LINUX_SA_NODEFER
#define LINUX_SA_ONESHOT        LINUX_SA_RESETHAND
#define LINUX_SA_INTERRUPT      0x20000000      /* Ignore this */

#define LINUX_SA_ALLBITS        0x2000007f

#define LINUX_SIG_BLOCK         1
#define LINUX_SIG_UNBLOCK       2
#define LINUX_SIG_SETMASK       3

typedef void    (*linux_handler_t)(int);

typedef u_long  linux_old_sigset_t;
typedef struct {
        u_long sig[LINUX__NSIG_WORDS];
} linux_sigset_t;

/* aka osf_sigaction in Linux sources.  Note absence of sa_restorer */
struct linux_old_sigaction {
        linux_handler_t         linux_sa_handler;
        linux_old_sigset_t      linux_sa_mask;
        int                     linux_sa_flags;
};

/* Used in rt_* calls */
struct linux_sigaction {
        linux_handler_t         linux_sa_handler;
        u_long                  linux_sa_flags;
        linux_sigset_t          linux_sa_mask;
};

struct linux_k_sigaction {
        struct linux_sigaction sa;
        void            (*k_sa_restorer)(void);
};

typedef struct linux_sigaltstack {
        void *ss_sp;
        int ss_flags;
        size_t ss_size;
} linux_stack_t;

#endif /* !_ALPHA_LINUX_SIGNAL_H */