root/include/asm-m68k/signal.h

INCLUDED FROM

DEFINITIONS

1. sigaddset
2. sigdelset
3. __const_sigismember
4. __gen_sigismember
5. sigfindinword

#ifndef _M68K_SIGNAL_H
#define _M68K_SIGNAL_H

#include <linux/types.h>

/* Avoid too many header ordering problems.  */
struct siginfo;

#ifdef __KERNEL__
/* 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       32
#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__ */

#define SIGHUP           1
#define SIGINT           2
#define SIGQUIT          3
#define SIGILL           4
#define SIGTRAP          5
#define SIGABRT          6
#define SIGIOT           6
#define SIGBUS           7
#define SIGFPE           8
#define SIGKILL          9
#define SIGUSR1         10
#define SIGSEGV         11
#define SIGUSR2         12
#define SIGPIPE         13
#define SIGALRM         14
#define SIGTERM         15
#define SIGSTKFLT       16
#define SIGCHLD         17
#define SIGCONT         18
#define SIGSTOP         19
#define SIGTSTP         20
#define SIGTTIN         21
#define SIGTTOU         22
#define SIGURG          23
#define SIGXCPU         24
#define SIGXFSZ         25
#define SIGVTALRM       26
#define SIGPROF         27
#define SIGWINCH        28
#define SIGIO           29
#define SIGPOLL         SIGIO
/*
#define SIGLOST         29
*/
#define SIGPWR          30
#define SIGSYS          31
#define SIGUNUSED       31

/* These should not be considered constants from userland.  */
#define SIGRTMIN        32
#define SIGRTMAX        _NSIG

/*
 * SA_FLAGS values:
 *
 * SA_ONSTACK indicates that a registered stack_t will be used.
 * 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_NOCLDSTOP    0x00000001
#define SA_NOCLDWAIT    0x00000002
#define SA_SIGINFO      0x00000004
#define SA_ONSTACK      0x08000000
#define SA_RESTART      0x10000000
#define SA_NODEFER      0x40000000
#define SA_RESETHAND    0x80000000

#define SA_NOMASK       SA_NODEFER
#define SA_ONESHOT      SA_RESETHAND

/*
 * sigaltstack controls
 */
#define SS_ONSTACK      1
#define SS_DISABLE      2

#define MINSIGSTKSZ     2048
#define SIGSTKSZ        8192

#include <asm-generic/signal.h>

#ifdef __KERNEL__
struct old_sigaction {
        __sighandler_t sa_handler;
        old_sigset_t sa_mask;
        unsigned long sa_flags;
        __sigrestore_t sa_restorer;
};

struct sigaction {
        __sighandler_t sa_handler;
        unsigned long sa_flags;
        __sigrestore_t sa_restorer;
        sigset_t sa_mask;               /* mask last for extensibility */
};

struct k_sigaction {
        struct sigaction sa;
};
#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;
        unsigned long sa_flags;
        void (*sa_restorer)(void);
};

#define sa_handler      _u._sa_handler
#define sa_sigaction    _u._sa_sigaction

#endif /* __KERNEL__ */

typedef struct sigaltstack {
        void __user *ss_sp;
        int ss_flags;
        size_t ss_size;
} stack_t;

#ifdef __KERNEL__
#include <asm/sigcontext.h>

#define __HAVE_ARCH_SIG_BITOPS

static inline void sigaddset(sigset_t *set, int _sig)
{
        asm ("bfset %0{%1,#1}"
                : "+od" (*set)
                : "id" ((_sig - 1) ^ 31)
                : "cc");
}

static inline void sigdelset(sigset_t *set, int _sig)
{
        asm ("bfclr %0{%1,#1}"
                : "+od" (*set)
                : "id" ((_sig - 1) ^ 31)
                : "cc");
}

static inline int __const_sigismember(sigset_t *set, int _sig)
{
        unsigned long sig = _sig - 1;
        return 1 & (set->sig[sig / _NSIG_BPW] >> (sig % _NSIG_BPW));
}

static inline int __gen_sigismember(sigset_t *set, int _sig)
{
        int ret;
        asm ("bfextu %1{%2,#1},%0"
                : "=d" (ret)
                : "od" (*set), "id" ((_sig-1) ^ 31)
                : "cc");
        return ret;
}

#define sigismember(set,sig)                    \
        (__builtin_constant_p(sig) ?            \
         __const_sigismember(set,sig) :         \
         __gen_sigismember(set,sig))

static inline int sigfindinword(unsigned long word)
{
        asm ("bfffo %1{#0,#0},%0"
                : "=d" (word)
                : "d" (word & -word)
                : "cc");
        return word ^ 31;
}

struct pt_regs;
extern void ptrace_signal_deliver(struct pt_regs *regs, void *cookie);

#endif /* __KERNEL__ */

#endif /* _M68K_SIGNAL_H */