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/* $Id: signal.h,v 1.1.1.1 2004-04-15 02:40:23 phoenix Exp $ */

#ifndef _ASMSPARC_SIGNAL_H

#define _ASMSPARC_SIGNAL_H

#include <asm/sigcontext.h>

#ifdef __KERNEL__

#ifndef __ASSEMBLY__

#include <linux/personality.h>

#include <linux/types.h>

#endif

#endif

/* On the Sparc the signal handlers get passed a 'sub-signal' code

 * for certain signal types, which we document here.

 */

#define SIGHUP           1

#define SIGINT           2

#define SIGQUIT          3

#define SIGILL           4

#define    SUBSIG_STACK       0

#define    SUBSIG_ILLINST     2

#define    SUBSIG_PRIVINST    3

#define    SUBSIG_BADTRAP(t)  (0x80 + (t))

#define SIGTRAP          5

#define SIGABRT          6

#define SIGIOT           6

#define SIGEMT           7

#define    SUBSIG_TAG    10

#define SIGFPE           8

#define    SUBSIG_FPDISABLED     0x400

#define    SUBSIG_FPERROR        0x404

#define    SUBSIG_FPINTOVFL      0x001

#define    SUBSIG_FPSTSIG        0x002

#define    SUBSIG_IDIVZERO       0x014

#define    SUBSIG_FPINEXACT      0x0c4

#define    SUBSIG_FPDIVZERO      0x0c8

#define    SUBSIG_FPUNFLOW       0x0cc

#define    SUBSIG_FPOPERROR      0x0d0

#define    SUBSIG_FPOVFLOW       0x0d4

#define SIGKILL          9

#define SIGBUS          10

#define    SUBSIG_BUSTIMEOUT    1

#define    SUBSIG_ALIGNMENT     2

#define    SUBSIG_MISCERROR     5

#define SIGSEGV         11

#define    SUBSIG_NOMAPPING     3

#define    SUBSIG_PROTECTION    4

#define    SUBSIG_SEGERROR      5

#define SIGSYS          12

#define SIGPIPE         13

#define SIGALRM         14

#define SIGTERM         15

#define SIGURG          16

/* SunOS values which deviate from the Linux/i386 ones */

#define SIGSTOP         17

#define SIGTSTP         18

#define SIGCONT         19

#define SIGCHLD         20

#define SIGTTIN         21

#define SIGTTOU         22

#define SIGIO           23

#define SIGPOLL         SIGIO   /* SysV name for SIGIO */

#define SIGXCPU         24

#define SIGXFSZ         25

#define SIGVTALRM       26

#define SIGPROF         27

#define SIGWINCH        28

#define SIGLOST         29

#define SIGPWR          SIGLOST

#define SIGUSR1         30

#define SIGUSR2         31

/* Most things should be clean enough to redefine this at will, if care

 * is taken to make libc match.

 */

#define __OLD_NSIG      32

#define __NEW_NSIG      64

#define _NSIG_BPW       32

#define _NSIG_WORDS     (__NEW_NSIG / _NSIG_BPW)

#define SIGRTMIN        32

#define SIGRTMAX        (__NEW_NSIG - 1)

#if defined(__KERNEL__) || defined(__WANT_POSIX1B_SIGNALS__)

#define _NSIG           __NEW_NSIG

#define __new_sigset_t  sigset_t

#define __new_sigaction sigaction

#define __old_sigset_t  old_sigset_t

#define __old_sigaction old_sigaction

#else

#define _NSIG           __OLD_NSIG

#define __old_sigset_t  sigset_t

#define __old_sigaction sigaction

#endif

#ifndef __ASSEMBLY__

typedef unsigned long __old_sigset_t;

typedef struct {

        unsigned long   sig[_NSIG_WORDS];

} __new_sigset_t;

/* A SunOS sigstack */

struct sigstack {

        char *the_stack;

        int   cur_status;

};

/* Sigvec flags */

#define SV_SSTACK    1     /* This signal handler should use sig-stack */

#define SV_INTR      2     /* Sig return should not restart system call */

#define SV_RESET     4     /* Set handler to SIG_DFL upon taken signal */

#define SV_IGNCHILD  8     /* Do not send SIGCHLD */

/*

 * sa_flags values: SA_STACK is not currently supported, but will allow the

 * usage of signal stacks by using the (now obsolete) sa_restorer field in

 * the sigaction structure as a stack pointer. This is now possible due to

 * the changes in signal handling. LBT 010493.

 * 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_SHIRQ flag is for shared interrupt support on PCI and EISA.

 */

#define SA_NOCLDSTOP    SV_IGNCHILD

#define SA_STACK        SV_SSTACK

#define SA_ONSTACK      SV_SSTACK

#define SA_RESTART      SV_INTR

#define SA_ONESHOT      SV_RESET

#define SA_INTERRUPT    0x10

#define SA_NOMASK       0x20

#define SA_SHIRQ        0x40

#define SA_NOCLDWAIT    0x100   /* not supported yet */

#define SA_SIGINFO      0x200

#define SIG_BLOCK          0x01 /* for blocking signals */

#define SIG_UNBLOCK        0x02 /* for unblocking signals */

#define SIG_SETMASK        0x04 /* for setting the signal mask */

/*

 * 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.

 *

 * DJHR

 * SA_STATIC_ALLOC is used for the SPARC system to indicate that this

 * interrupt handler's irq structure should be statically allocated

 * by the request_irq routine.

 * The alternative is that arch/sparc/kernel/irq.c has carnal knowledge

 * of interrupt usage and that sucks. Also without a flag like this

 * it may be possible for the free_irq routine to attempt to free

 * statically allocated data.. which is NOT GOOD.

 *

 */

#define SA_PROBE SA_ONESHOT

#define SA_SAMPLE_RANDOM SA_RESTART

#define SA_STATIC_ALLOC         0x80

#endif

/* Type of a signal handler.  */

#ifdef __KERNEL__

typedef void (*__sighandler_t)(int, int, struct sigcontext *, char *);

#else

typedef void (*__sighandler_t)(int);

#endif

#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 */

struct __new_sigaction {

        __sighandler_t  sa_handler;

        unsigned long   sa_flags;

        void            (*sa_restorer)(void);   /* Not used by Linux/SPARC */

        __new_sigset_t  sa_mask;

};

#ifdef __KERNEL__

struct k_sigaction {

        struct __new_sigaction  sa;

        void                    *ka_restorer;

};

#endif

struct __old_sigaction {

        __sighandler_t  sa_handler;

        __old_sigset_t  sa_mask;

        unsigned long   sa_flags;

        void            (*sa_restorer) (void);  /* not used by Linux/SPARC */

};

typedef struct sigaltstack {

        void            *ss_sp;

        int             ss_flags;

        size_t          ss_size;

} stack_t;

#endif /* !(__ASSEMBLY__) */

#endif /* !(_ASMSPARC_SIGNAL_H) */