6a0eec8224
Long-term we want to split system.h and include barriers part from underlying target; for now copy that part to sysdep. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
#ifndef __UM_SYSTEM_GENERIC_H
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#define __UM_SYSTEM_GENERIC_H
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#include "sysdep/system.h"
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extern void *switch_to(void *prev, void *next, void *last);
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extern int get_signals(void);
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extern int set_signals(int enable);
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extern int get_signals(void);
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extern void block_signals(void);
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extern void unblock_signals(void);
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#define local_save_flags(flags) do { typecheck(unsigned long, flags); \
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(flags) = get_signals(); } while(0)
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#define local_irq_restore(flags) do { typecheck(unsigned long, flags); \
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set_signals(flags); } while(0)
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#define local_irq_save(flags) do { local_save_flags(flags); \
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local_irq_disable(); } while(0)
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#define local_irq_enable() unblock_signals()
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#define local_irq_disable() block_signals()
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#define irqs_disabled() \
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({ \
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unsigned long flags; \
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local_save_flags(flags); \
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(flags == 0); \
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})
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extern void *_switch_to(void *prev, void *next, void *last);
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#define switch_to(prev, next, last) prev = _switch_to(prev, next, last)
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#endif
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