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