/* SPDX-License-Identifier: GPL-2.0 */

#ifndef __ASM_CSKY_BITOPS_H
#define __ASM_CSKY_BITOPS_H

#include <linux/compiler.h>
#include <asm/barrier.h>

/*
 * asm-generic/bitops/ffs.h
 */
static inline __attribute_const__ int ffs(int x)
{
        if (!x)
                return 0;

        asm volatile (
                "brev %0\n"
                "ff1  %0\n"
                "addi %0, 1\n"
                : "=&r"(x)
                : "0"(x));
        return x;
}

/*
 * asm-generic/bitops/__ffs.h
 */
static __always_inline __attribute_const__ unsigned long __ffs(unsigned long x)
{
        asm volatile (
                "brev %0\n"
                "ff1  %0\n"
                : "=&r"(x)
                : "0"(x));
        return x;
}

/*
 * asm-generic/bitops/fls.h
 */
static __always_inline __attribute_const__ int fls(unsigned int x)
{
        asm volatile(
                "ff1 %0\n"
                : "=&r"(x)
                : "0"(x));

        return (32 - x);
}

/*
 * asm-generic/bitops/__fls.h
 */
static __always_inline __attribute_const__ unsigned long __fls(unsigned long x)
{
        return fls(x) - 1;
}

#include <asm-generic/bitops/ffz.h>
#include <asm-generic/bitops/fls64.h>

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

#include <asm-generic/bitops/sched.h>
#include <asm-generic/bitops/hweight.h>
#include <asm-generic/bitops/lock.h>
#include <asm-generic/bitops/atomic.h>

/*
 * bug fix, why only could use atomic!!!!
 */
#include <asm-generic/bitops/non-atomic.h>

#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/ext2-atomic.h>
#endif /* __ASM_CSKY_BITOPS_H */