bitops.h

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#ifndef __ASM_SH_BITOPS_H
#define __ASM_SH_BITOPS_H

#ifdef __KERNEL__

#ifndef _LINUX_BITOPS_H
#error only <linux/bitops.h> can be included directly
#endif

/* For __swab32 */
#include <asm/byteorder.h>

#ifdef CONFIG_GUSA_RB
#include <asm/bitops-grb.h>
#elif defined(CONFIG_CPU_SH2A)
#include <asm-generic/bitops/atomic.h>
#include <asm/bitops-op32.h>
#elif defined(CONFIG_CPU_SH4A)
#include <asm/bitops-llsc.h>
#else
#include <asm-generic/bitops/atomic.h>
#include <asm-generic/bitops/non-atomic.h>
#endif

/*
 * clear_bit() doesn't provide any barrier for the compiler.
 */
#define smp_mb__before_clear_bit()  smp_mb()
#define smp_mb__after_clear_bit()   smp_mb()

#ifdef CONFIG_SUPERH32
static inline unsigned long ffz(unsigned long word)
{
    unsigned long result;

    __asm__("1:\n\t"
        "shlr   %1\n\t"
        "bt/s   1b\n\t"
        " add   #1, %0"
        : "=r" (result), "=r" (word)
        : "0" (~0L), "1" (word)
        : "t");
    return result;
}

static inline unsigned long __ffs(unsigned long word)
{
    unsigned long result;

    __asm__("1:\n\t"
        "shlr   %1\n\t"
        "bf/s   1b\n\t"
        " add   #1, %0"
        : "=r" (result), "=r" (word)
        : "0" (~0L), "1" (word)
        : "t");
    return result;
}
#else
static inline unsigned long ffz(unsigned long word)
{
    unsigned long result, __d2, __d3;

        __asm__("gettr  tr0, %2\n\t"
                "pta    $+32, tr0\n\t"
                "andi   %1, 1, %3\n\t"
                "beq    %3, r63, tr0\n\t"
                "pta    $+4, tr0\n"
                "0:\n\t"
                "shlri.l        %1, 1, %1\n\t"
                "addi   %0, 1, %0\n\t"
                "andi   %1, 1, %3\n\t"
                "beqi   %3, 1, tr0\n"
                "1:\n\t"
                "ptabs  %2, tr0\n\t"
                : "=r" (result), "=r" (word), "=r" (__d2), "=r" (__d3)
                : "0" (0L), "1" (word));

    return result;
}

#include <asm-generic/bitops/__ffs.h>
#endif

#include <asm-generic/bitops/find.h>
#include <asm-generic/bitops/ffs.h>
#include <asm-generic/bitops/hweight.h>
#include <asm-generic/bitops/lock.h>
#include <asm-generic/bitops/sched.h>
#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/ext2-atomic.h>
#include <asm-generic/bitops/fls.h>
#include <asm-generic/bitops/__fls.h>
#include <asm-generic/bitops/fls64.h>

#endif /* __KERNEL__ */

#endif /* __ASM_SH_BITOPS_H */