/*      $NetBSD: linux_signal.h,v 1.1 2021/09/23 06:56:27 ryo Exp $     */

/*-
 * Copyright (c) 2021 The NetBSD Foundation, Inc.
 * 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.
 *
 * 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.
 */

#ifndef _AARCH64_LINUX_SIGNAL_H
#define _AARCH64_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_SIGIOT            6
#define LINUX_SIGBUS            7
#define LINUX_SIGFPE            8
#define LINUX_SIGKILL           9
#define LINUX_SIGUSR1           10
#define LINUX_SIGSEGV           11
#define LINUX_SIGUSR2           12
#define LINUX_SIGPIPE           13
#define LINUX_SIGALRM           14
#define LINUX_SIGTERM           15
#define LINUX_SIGSTKFLT         16
#define LINUX_SIGCHLD           17
#define LINUX_SIGCONT           18
#define LINUX_SIGSTOP           19
#define LINUX_SIGTSTP           20
#define LINUX_SIGTTIN           21
#define LINUX_SIGTTOU           22
#define LINUX_SIGURG            23
#define LINUX_SIGXCPU           24
#define LINUX_SIGXFSZ           25
#define LINUX_SIGVTALRM         26
#define LINUX_SIGPROF           27
#define LINUX_SIGWINCH          28
#define LINUX_SIGIO             29
#define LINUX_SIGPWR            30
#define LINUX_SIGSYS            31
/* SIGCANCEL=32, SIGSETXID=33 */
#define LINUX_SIGRTMIN          34
#define LINUX_SIGRTMAX          64


#define LINUX_SS_ONSTACK        1
#define LINUX_SS_DISABLE        2

#define LINUX_SA_NOCLDSTOP      0x00000001
#define LINUX_SA_NOCLDWAIT      0x00000002
#define LINUX_SA_SIGINFO        0x00000004
#define LINUX_SA_ONSTACK        0x08000000
#define LINUX_SA_RESTART        0x10000000
#define LINUX_SA_NOMASK         0x40000000
#define LINUX_SA_ONESHOT        0x80000000
#define LINUX_SA_ALLBITS        0xd8000007


#define LINUX_SIG_BLOCK         0
#define LINUX_SIG_UNBLOCK       1
#define LINUX_SIG_SETMASK       2

#define LINUX__NSIG             (LINUX_SIGRTMAX + 1)
#define LINUX__NSIG_BPW         64
#define LINUX__NSIG_WORDS       (LINUX__NSIG / LINUX__NSIG_BPW)

#define LINUX_MINSIGSTKSZ       2048

typedef struct {
        unsigned long sig[LINUX__NSIG_WORDS];
} linux_sigset_t;

typedef void (*linux_handler_t)(int);

struct linux_sigaction {
        linux_handler_t linux_sa_handler;
        unsigned long linux_sa_flags;

        /*
         * linux/arm64 doesn't use sa_restorer,
         * but struct sigaction has it for compatibility.
         */
        void (*linux_sa_restorer)(void);

        linux_sigset_t linux_sa_mask;
};

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

#endif /* !_AARCH64_LINUX_SIGNAL_H */