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#ifndef _ASMAXP_SIGNAL_H

#define _ASMAXP_SIGNAL_H

#include <linux/types.h>

/* Avoid too many header ordering problems.  */

struct siginfo;

#ifdef __KERNEL__

/* Digital Unix defines 64 signals.  Most things should be clean enough

   to redefine this at will, if care is taken to make libc match.  */

#define _NSIG           64

#define _NSIG_BPW       64

#define _NSIG_WORDS     (_NSIG / _NSIG_BPW)

typedef unsigned long old_sigset_t;             /* at least 32 bits */

typedef struct {

        unsigned long sig[_NSIG_WORDS];

} sigset_t;

#else

/* Here we must cater to libcs that poke about in kernel headers.  */

#define NSIG            32

typedef unsigned long sigset_t;

#endif /* __KERNEL__ */

/*

 * Linux/AXP has different signal numbers that Linux/i386: I'm trying

 * to make it OSF/1 binary compatible, at least for normal binaries.

 */

#define SIGHUP           1

#define SIGINT           2

#define SIGQUIT          3

#define SIGILL           4

#define SIGTRAP          5

#define SIGABRT          6

#define SIGEMT           7

#define SIGFPE           8

#define SIGKILL          9

#define SIGBUS          10

#define SIGSEGV         11

#define SIGSYS          12

#define SIGPIPE         13

#define SIGALRM         14

#define SIGTERM         15

#define SIGURG          16

#define SIGSTOP         17

#define SIGTSTP         18

#define SIGCONT         19

#define SIGCHLD         20

#define SIGTTIN         21

#define SIGTTOU         22

#define SIGIO           23

#define SIGXCPU         24

#define SIGXFSZ         25

#define SIGVTALRM       26

#define SIGPROF         27

#define SIGWINCH        28

#define SIGINFO         29

#define SIGUSR1         30

#define SIGUSR2         31

#define SIGPOLL SIGIO

#define SIGPWR  SIGINFO

#define SIGIOT  SIGABRT

/* These should not be considered constants from userland.  */

#define SIGRTMIN        32

#define SIGRTMAX        (_NSIG-1)

/*

 * SA_FLAGS values:

 *

 * SA_ONSTACK indicates that a registered stack_t will be used.

 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the

 * SA_RESTART flag to get restarting signals (which were the default long ago)

 * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.

 * SA_RESETHAND clears the handler when the signal is delivered.

 * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.

 * SA_NODEFER prevents the current signal from being masked in the handler.

 *

 * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single

 * Unix names RESETHAND and NODEFER respectively.

 */

#define SA_ONSTACK      0x00000001

#define SA_RESTART      0x00000002

#define SA_NOCLDSTOP    0x00000004

#define SA_NODEFER      0x00000008

#define SA_RESETHAND    0x00000010

#define SA_NOCLDWAIT    0x00000020 /* not supported yet */

#define SA_SIGINFO      0x00000040

#define SA_ONESHOT      SA_RESETHAND

#define SA_NOMASK       SA_NODEFER

#define SA_INTERRUPT    0x20000000 /* dummy -- ignored */

/*

 * sigaltstack controls

 */

#define SS_ONSTACK      1

#define SS_DISABLE      2

#define MINSIGSTKSZ     4096

#define SIGSTKSZ        16384

#ifdef __KERNEL__

/*

 * These values of sa_flags are used only by the kernel as part of the

 * irq handling routines.

 *

 * SA_INTERRUPT is also used by the irq handling routines.

 * SA_SHIRQ is for shared interrupt support on PCI and EISA.

 */

#define SA_PROBE                SA_ONESHOT

#define SA_SAMPLE_RANDOM        SA_RESTART

#define SA_SHIRQ                0x40000000

#endif

#define SIG_BLOCK          1    /* for blocking signals */

#define SIG_UNBLOCK        2    /* for unblocking signals */

#define SIG_SETMASK        3    /* for setting the signal mask */

/* Type of a signal handler.  */

typedef void (*__sighandler_t)(int);

#define SIG_DFL ((__sighandler_t)0)     /* default signal handling */

#define SIG_IGN ((__sighandler_t)1)     /* ignore signal */

#define SIG_ERR ((__sighandler_t)-1)    /* error return from signal */

#ifdef __KERNEL__

struct osf_sigaction {

        __sighandler_t  sa_handler;

        old_sigset_t    sa_mask;

        int             sa_flags;

};

struct sigaction {

        __sighandler_t  sa_handler;

        unsigned long   sa_flags;

        sigset_t        sa_mask;        /* mask last for extensibility */

};

struct k_sigaction {

        struct sigaction sa;

        void (*ka_restorer)(void);

};

#else

/* Here we must cater to libcs that poke about in kernel headers.  */

struct sigaction {

        union {

          __sighandler_t        _sa_handler;

          void (*_sa_sigaction)(int, struct siginfo *, void *);

        } _u;

        sigset_t        sa_mask;

        int             sa_flags;

};

#define sa_handler      _u._sa_handler

#define sa_sigaction    _u._sa_sigaction

#endif /* __KERNEL__ */

typedef struct sigaltstack {

        void *ss_sp;

        int ss_flags;

        size_t ss_size;

} stack_t;

/* sigstack(2) is deprecated, and will be withdrawn in a future version

   of the X/Open CAE Specification.  Use sigaltstack instead.  It is only

   implemented here for OSF/1 compatibility.  */

struct sigstack {

        void *ss_sp;

        int ss_onstack;

};

#ifdef __KERNEL__

#include <asm/sigcontext.h>

#endif

#endif