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/*
* include/asm-s390/irqflags.h
*
* Copyright (C) IBM Corp. 2006
* Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
*/
#ifndef __ASM_IRQFLAGS_H
#define __ASM_IRQFLAGS_H
#ifdef __KERNEL__
/* interrupt control.. */
#define raw_local_irq_enable() ({ \
unsigned long __dummy; \
__asm__ __volatile__ ( \
"stosm 0(%1),0x03" \
: "=m" (__dummy) : "a" (&__dummy) : "memory" ); \
})
#define raw_local_irq_disable() ({ \
unsigned long __flags; \
__asm__ __volatile__ ( \
"stnsm 0(%1),0xfc" : "=m" (__flags) : "a" (&__flags) ); \
__flags; \
})
#define raw_local_save_flags(x) \
do { \
typecheck(unsigned long, x); \
__asm__ __volatile__("stosm 0(%1),0" : "=m" (x) : "a" (&x), "m" (x) ); \
} while (0)
#define raw_local_irq_restore(x) \
do { \
typecheck(unsigned long, x); \
__asm__ __volatile__("ssm 0(%0)" : : "a" (&x), "m" (x) : "memory"); \
} while (0)
#define raw_irqs_disabled() \
({ \
unsigned long flags; \
raw_local_save_flags(flags); \
!((flags >> __FLAG_SHIFT) & 3); \
})
static inline int raw_irqs_disabled_flags(unsigned long flags)
{
return !((flags >> __FLAG_SHIFT) & 3);
}
/* For spinlocks etc */
#define raw_local_irq_save(x) ((x) = raw_local_irq_disable())
#endif /* __KERNEL__ */
#endif /* __ASM_IRQFLAGS_H */
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