diff options
Diffstat (limited to 'include/asm-s390/irqflags.h')
| -rw-r--r-- | include/asm-s390/irqflags.h | 110 |
1 files changed, 80 insertions, 30 deletions
diff --git a/include/asm-s390/irqflags.h b/include/asm-s390/irqflags.h index 3b566a5b3cc7..3f26131120b7 100644 --- a/include/asm-s390/irqflags.h +++ b/include/asm-s390/irqflags.h @@ -10,43 +10,93 @@ #ifdef __KERNEL__ +#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 2) + +/* store then or system mask. */ +#define __raw_local_irq_stosm(__or) \ +({ \ + unsigned long __mask; \ + asm volatile( \ + " stosm %0,%1" \ + : "=Q" (__mask) : "i" (__or) : "memory"); \ + __mask; \ +}) + +/* store then and system mask. */ +#define __raw_local_irq_stnsm(__and) \ +({ \ + unsigned long __mask; \ + asm volatile( \ + " stnsm %0,%1" \ + : "=Q" (__mask) : "i" (__and) : "memory"); \ + __mask; \ +}) + +/* set system mask. */ +#define __raw_local_irq_ssm(__mask) \ +({ \ + asm volatile("ssm %0" : : "Q" (__mask) : "memory"); \ +}) + +#else /* __GNUC__ */ + +/* store then or system mask. */ +#define __raw_local_irq_stosm(__or) \ +({ \ + unsigned long __mask; \ + asm volatile( \ + " stosm 0(%1),%2" \ + : "=m" (__mask) \ + : "a" (&__mask), "i" (__or) : "memory"); \ + __mask; \ +}) + +/* store then and system mask. */ +#define __raw_local_irq_stnsm(__and) \ +({ \ + unsigned long __mask; \ + asm volatile( \ + " stnsm 0(%1),%2" \ + : "=m" (__mask) \ + : "a" (&__mask), "i" (__and) : "memory"); \ + __mask; \ +}) + +/* set system mask. */ +#define __raw_local_irq_ssm(__mask) \ +({ \ + asm volatile( \ + " ssm 0(%0)" \ + : : "a" (&__mask), "m" (__mask) : "memory"); \ +}) + +#endif /* __GNUC__ */ + /* interrupt control.. */ -#define raw_local_irq_enable() ({ \ - unsigned long __dummy; \ - __asm__ __volatile__ ( \ - "stosm 0(%1),0x03" \ - : "=m" (__dummy) : "a" (&__dummy) : "memory" ); \ - }) - -#define raw_local_irq_disable() ({ \ - unsigned long __flags; \ - __asm__ __volatile__ ( \ - "stnsm 0(%1),0xfc" : "=m" (__flags) : "a" (&__flags) ); \ - __flags; \ - }) - -#define raw_local_save_flags(x) \ -do { \ - typecheck(unsigned long, x); \ - __asm__ __volatile__("stosm 0(%1),0" : "=m" (x) : "a" (&x), "m" (x) ); \ -} while (0) +static inline unsigned long raw_local_irq_enable(void) +{ + return __raw_local_irq_stosm(0x03); +} -#define raw_local_irq_restore(x) \ -do { \ - typecheck(unsigned long, x); \ - __asm__ __volatile__("ssm 0(%0)" : : "a" (&x), "m" (x) : "memory"); \ +static inline unsigned long raw_local_irq_disable(void) +{ + return __raw_local_irq_stnsm(0xfc); +} + +#define raw_local_save_flags(x) \ +do { \ + typecheck(unsigned long, x); \ + (x) = __raw_local_irq_stosm(0x00); \ } while (0) -#define raw_irqs_disabled() \ -({ \ - unsigned long flags; \ - raw_local_save_flags(flags); \ - !((flags >> __FLAG_SHIFT) & 3); \ -}) +static inline void raw_local_irq_restore(unsigned long flags) +{ + __raw_local_irq_ssm(flags); +} static inline int raw_irqs_disabled_flags(unsigned long flags) { - return !((flags >> __FLAG_SHIFT) & 3); + return !(flags & (3UL << (BITS_PER_LONG - 8))); } /* For spinlocks etc */ |