diff options
Diffstat (limited to 'include/asm-um/system-generic.h')
| -rw-r--r-- | include/asm-um/system-generic.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/include/asm-um/system-generic.h b/include/asm-um/system-generic.h new file mode 100644 index 00000000000..5bcfa35e7a2 --- /dev/null +++ b/include/asm-um/system-generic.h @@ -0,0 +1,47 @@ +#ifndef __UM_SYSTEM_GENERIC_H +#define __UM_SYSTEM_GENERIC_H + +#include "asm/arch/system.h" + +#undef switch_to +#undef local_irq_save +#undef local_irq_restore +#undef local_irq_disable +#undef local_irq_enable +#undef local_save_flags +#undef local_irq_restore +#undef local_irq_enable +#undef local_irq_disable +#undef local_irq_save +#undef irqs_disabled + +extern void *switch_to(void *prev, void *next, void *last); + +extern int get_signals(void); +extern int set_signals(int enable); +extern int get_signals(void); +extern void block_signals(void); +extern void unblock_signals(void); + +#define local_save_flags(flags) do { typecheck(unsigned long, flags); \ + (flags) = get_signals(); } while(0) +#define local_irq_restore(flags) do { typecheck(unsigned long, flags); \ + set_signals(flags); } while(0) + +#define local_irq_save(flags) do { local_save_flags(flags); \ + local_irq_disable(); } while(0) + +#define local_irq_enable() unblock_signals() +#define local_irq_disable() block_signals() + +#define irqs_disabled() \ +({ \ + unsigned long flags; \ + local_save_flags(flags); \ + (flags == 0); \ +}) + +extern void *_switch_to(void *prev, void *next, void *last); +#define switch_to(prev, next, last) prev = _switch_to(prev, next, last) + +#endif |