/* $NetBSD: linux_signal.h,v 1.14 2015/11/14 13:29:35 christos Exp $ */

/*-
 * Copyright (c) 1995, 1998, 2001 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Frank van der Linden, Eric Haszlakiewicz and Emmanuel Dreyfus.
 *
 * 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 _MIPS_LINUX_SIGNAL_H
#define _MIPS_LINUX_SIGNAL_H

/*
 * From Linux's include/asm-mips/ptrace.h
 */
struct linux_pt_regs {
        unsigned long lpad0[6];
        unsigned long lregs[32];
        unsigned long llo;
        unsigned long lhi;
        unsigned long lcp0_epc;
        unsigned long lcp0_badvaddr;
        unsigned long lcp0_status;
        unsigned long lcp0_cause;
};

/*
 * Everything is from Linux's include/asm-mips/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_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_SIGUSR1           16
#define LINUX_SIGUSR2           17
#define LINUX_SIGCHLD           18
#define LINUX_SIGCLD            18
#define LINUX_SIGPWR            19
#define LINUX_SIGWINCH          20
#define LINUX_SIGURG            21
#define LINUX_SIGIO             22
#define LINUX_SIGPOLL           22
#define LINUX_SIGSTOP           23
#define LINUX_SIGTSTP           24
#define LINUX_SIGCONT           25
#define LINUX_SIGTTIN           26
#define LINUX_SIGTTOU           27
#define LINUX_SIGVTALRM         28
#define LINUX_SIGPROF           29
#define LINUX_SIGXCPU           30
#define LINUX_SIGXFSZ           31

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

#define LINUX__NSIG             128
#if defined(ELFSIZE) && (ELFSIZE == 64)
#define LINUX__NSIG_BPW         64
#else
#define LINUX__NSIG_BPW         32
#endif
#define LINUX__NSIG_WORDS (LINUX__NSIG / LINUX__NSIG_BPW)

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

/* sa_flags */
#define LINUX_SA_NOCLDSTOP      0x00000001
#define LINUX_SA_SIGINFO        0x00000008
#define LINUX_SA_NOCLDWAIT      0x00010000
#define LINUX_SA_ONSTACK        0x08000000
#define LINUX_SA_RESTART        0x10000000
#define LINUX_SA_NODEFER        0x40000000
#define LINUX_SA_RESETHAND      0x80000000
#define LINUX_SA_NOMASK         LINUX_SA_NODEFER
#define LINUX_SA_ONESHOT        LINUX_SA_RESETHAND
#define LINUX_SA_ALLBITS        0xd8010009
/* XXX LINUX_SA_RESTORER has been deprecated; not used any version of glibc */

#define LINUX_MINSIGSTKSZ       2048

typedef void (*linux___sighandler_t)(int);

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

/* Used in rt_* calls. No old_sigaction is defined for MIPS */
struct linux_sigaction {
        unsigned int            linux_sa_flags;
        linux___sighandler_t    linux_sa_handler;
        linux_sigset_t          linux_sa_mask;
        void                    (*linux_sa_restorer)(void);
        int                     linux_sa_resv[1];
};

struct linux_k_sigaction {
        struct linux_sigaction sa;
};

struct linux_old_sigaction {
        unsigned int            linux_sa_flags;
        linux___sighandler_t    linux_sa_handler;
        linux_old_sigset_t      linux_sa_mask;
        void                    (*linux_sa_restorer)(void);
        int                     linux_sa_resv[1];
};

#define LINUX_SS_ONSTACK        1
#define LINUX_SS_DISABLE        2

#define LINUX_MINSIGSTKSZ       2048
#define LINUX_SIGSTKSZ          8192

struct linux_sigaltstack {
        void *ss_sp;
        size_t ss_size;
        int ss_flags;
};
typedef struct linux_sigaltstack linux_stack_t; /* XXX really needed ? */

#endif /* !_MIPS_LINUX_SIGNAL_H */