/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _M68K_SIGNAL_H
#define _M68K_SIGNAL_H

#include <uapi/asm/signal.h>

/* 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;

#define __ARCH_HAS_SA_RESTORER

#include <asm/sigcontext.h>

#ifndef CONFIG_CPU_HAS_NO_BITFIELDS
#define __HAVE_ARCH_SIG_BITOPS

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

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

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

#endif /* !CONFIG_CPU_HAS_NO_BITFIELDS */

#endif /* _M68K_SIGNAL_H */