#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