| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __UM_SYSTEM_GENERIC_H |
| 2 | #define __UM_SYSTEM_GENERIC_H |
| 3 | |
| 4 | #include "asm/arch/system.h" |
| 5 | |
| 6 | #undef switch_to |
| 7 | #undef local_irq_save |
| 8 | #undef local_irq_restore |
| 9 | #undef local_irq_disable |
| 10 | #undef local_irq_enable |
| 11 | #undef local_save_flags |
| 12 | #undef local_irq_restore |
| 13 | #undef local_irq_enable |
| 14 | #undef local_irq_disable |
| 15 | #undef local_irq_save |
| 16 | #undef irqs_disabled |
| 17 | |
| 18 | extern void *switch_to(void *prev, void *next, void *last); |
| 19 | |
| 20 | extern int get_signals(void); |
| 21 | extern int set_signals(int enable); |
| 22 | extern int get_signals(void); |
| 23 | extern void block_signals(void); |
| 24 | extern void unblock_signals(void); |
| 25 | |
| 26 | #define local_save_flags(flags) do { typecheck(unsigned long, flags); \ |
| 27 | (flags) = get_signals(); } while(0) |
| 28 | #define local_irq_restore(flags) do { typecheck(unsigned long, flags); \ |
| 29 | set_signals(flags); } while(0) |
| 30 | |
| 31 | #define local_irq_save(flags) do { local_save_flags(flags); \ |
| 32 | local_irq_disable(); } while(0) |
| 33 | |
| 34 | #define local_irq_enable() unblock_signals() |
| 35 | #define local_irq_disable() block_signals() |
| 36 | |
| 37 | #define irqs_disabled() \ |
| 38 | ({ \ |
| 39 | unsigned long flags; \ |
| 40 | local_save_flags(flags); \ |
| 41 | (flags == 0); \ |
| 42 | }) |
| 43 | |
| 44 | extern void *_switch_to(void *prev, void *next, void *last); |
| 45 | #define switch_to(prev, next, last) prev = _switch_to(prev, next, last) |
| 46 | |
| 47 | #endif |