path: root/include/asm-sh/bitops-irq.h

#ifndef __ASM_SH_BITOPS_IRQ_H
#define __ASM_SH_BITOPS_IRQ_H

static inline void set_bit(int nr, volatile void *addr)
{
	int	mask;
	volatile unsigned int *a = addr;
	unsigned long flags;

	a += nr >> 5;
	mask = 1 << (nr & 0x1f);
	local_irq_save(flags);
	*a |= mask;
	local_irq_restore(flags);
}

static inline void clear_bit(int nr, volatile void *addr)
{
	int	mask;
	volatile unsigned int *a = addr;
	unsigned long flags;

	a += nr >> 5;
	mask = 1 << (nr & 0x1f);
	local_irq_save(flags);
	*a &= ~mask;
	local_irq_restore(flags);
}

static inline void change_bit(int nr, volatile void *addr)
{
	int	mask;
	volatile unsigned int *a = addr;
	unsigned long flags;

	a += nr >> 5;
	mask = 1 << (nr & 0x1f);
	local_irq_save(flags);
	*a ^= mask;
	local_irq_restore(flags);
}

static inline int test_and_set_bit(int nr, volatile void *addr)
{
	int	mask, retval;
	volatile unsigned int *a = addr;
	unsigned long flags;

	a += nr >> 5;
	mask = 1 << (nr & 0x1f);
	local_irq_save(flags);
	retval = (mask & *a) != 0;
	*a |= mask;
	local_irq_restore(flags);

	return retval;
}

static inline int test_and_clear_bit(int nr, volatile void *addr)
{
	int	mask, retval;
	volatile unsigned int *a = addr;
	unsigned long flags;

	a += nr >> 5;
	mask = 1 << (nr & 0x1f);
	local_irq_save(flags);
	retval = (mask & *a) != 0;
	*a &= ~mask;
	local_irq_restore(flags);

	return retval;
}

static inline int test_and_change_bit(int nr, volatile void *addr)
{
	int	mask, retval;
	volatile unsigned int *a = addr;
	unsigned long flags;

	a += nr >> 5;
	mask = 1 << (nr & 0x1f);
	local_irq_save(flags);
	retval = (mask & *a) != 0;
	*a ^= mask;
	local_irq_restore(flags);

	return retval;
}

#endif /* __ASM_SH_BITOPS_IRQ_H */