arch/avr8/include/arch/bitops.h

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#ifndef ARCH_BITOPS_H_INCLUDED
#define ARCH_BITOPS_H_INCLUDED

#include <interrupt.h>

typedef uint8_t bit_word_t;

static inline void atomic_set_bit(unsigned int nr, bit_word_t *bitmap)
{
        irqflags_t      iflags;

        iflags = cpu_irq_save();
        set_bit(nr, bitmap);
        cpu_irq_restore(iflags);
}

static inline void atomic_clear_bit(unsigned int nr, bit_word_t *bitmap)
{
        irqflags_t      iflags;

        iflags = cpu_irq_save();
        clear_bit(nr, bitmap);
        cpu_irq_restore(iflags);
}

static inline void atomic_toggle_bit(unsigned int nr, bit_word_t *bitmap)
{
        irqflags_t      iflags;

        iflags = cpu_irq_save();
        toggle_bit(nr, bitmap);
        cpu_irq_restore(iflags);
}

static inline bool atomic_test_and_set_bit(unsigned int nr, bit_word_t *bitmap)
{
        bool            is_set;
        irqflags_t      iflags;

        iflags = cpu_irq_save();
        is_set = test_bit(nr, bitmap);
        set_bit(nr, bitmap);
        cpu_irq_restore(iflags);

        return is_set;
}

static inline bool atomic_test_and_clear_bit(unsigned int nr,
                bit_word_t *bitmap)
{
        bool            is_set;
        irqflags_t      iflags;

        iflags = cpu_irq_save();
        is_set = test_bit(nr, bitmap);
        clear_bit(nr, bitmap);
        cpu_irq_restore(iflags);

        return is_set;
}


#endif /* ARCH_BITOPS_H_INCLUDED */

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