diff options
Diffstat (limited to 'arch/parisc/include/asm/bitops.h')
| -rw-r--r-- | arch/parisc/include/asm/bitops.h | 41 |
1 files changed, 13 insertions, 28 deletions
diff --git a/arch/parisc/include/asm/bitops.h b/arch/parisc/include/asm/bitops.h index a09eaebfdfd0..aa4e883431c1 100644 --- a/arch/parisc/include/asm/bitops.h +++ b/arch/parisc/include/asm/bitops.h @@ -12,21 +12,6 @@ #include <asm/barrier.h> #include <linux/atomic.h> -/* - * HP-PARISC specific bit operations - * for a detailed description of the functions please refer - * to include/asm-i386/bitops.h or kerneldoc - */ - -#if __BITS_PER_LONG == 64 -#define SHIFT_PER_LONG 6 -#else -#define SHIFT_PER_LONG 5 -#endif - -#define CHOP_SHIFTCOUNT(x) (((unsigned long) (x)) & (BITS_PER_LONG - 1)) - - /* See http://marc.theaimsgroup.com/?t=108826637900003 for discussion * on use of volatile and __*_bit() (set/clear/change): * *_bit() want use of volatile. @@ -35,10 +20,10 @@ static __inline__ void set_bit(int nr, volatile unsigned long * addr) { - unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr); + unsigned long mask = BIT_MASK(nr); unsigned long flags; - addr += (nr >> SHIFT_PER_LONG); + addr += BIT_WORD(nr); _atomic_spin_lock_irqsave(addr, flags); *addr |= mask; _atomic_spin_unlock_irqrestore(addr, flags); @@ -46,21 +31,21 @@ static __inline__ void set_bit(int nr, volatile unsigned long * addr) static __inline__ void clear_bit(int nr, volatile unsigned long * addr) { - unsigned long mask = ~(1UL << CHOP_SHIFTCOUNT(nr)); + unsigned long mask = BIT_MASK(nr); unsigned long flags; - addr += (nr >> SHIFT_PER_LONG); + addr += BIT_WORD(nr); _atomic_spin_lock_irqsave(addr, flags); - *addr &= mask; + *addr &= ~mask; _atomic_spin_unlock_irqrestore(addr, flags); } static __inline__ void change_bit(int nr, volatile unsigned long * addr) { - unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr); + unsigned long mask = BIT_MASK(nr); unsigned long flags; - addr += (nr >> SHIFT_PER_LONG); + addr += BIT_WORD(nr); _atomic_spin_lock_irqsave(addr, flags); *addr ^= mask; _atomic_spin_unlock_irqrestore(addr, flags); @@ -68,12 +53,12 @@ static __inline__ void change_bit(int nr, volatile unsigned long * addr) static __inline__ int test_and_set_bit(int nr, volatile unsigned long * addr) { - unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr); + unsigned long mask = BIT_MASK(nr); unsigned long old; unsigned long flags; int set; - addr += (nr >> SHIFT_PER_LONG); + addr += BIT_WORD(nr); _atomic_spin_lock_irqsave(addr, flags); old = *addr; set = (old & mask) ? 1 : 0; @@ -86,12 +71,12 @@ static __inline__ int test_and_set_bit(int nr, volatile unsigned long * addr) static __inline__ int test_and_clear_bit(int nr, volatile unsigned long * addr) { - unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr); + unsigned long mask = BIT_MASK(nr); unsigned long old; unsigned long flags; int set; - addr += (nr >> SHIFT_PER_LONG); + addr += BIT_WORD(nr); _atomic_spin_lock_irqsave(addr, flags); old = *addr; set = (old & mask) ? 1 : 0; @@ -104,11 +89,11 @@ static __inline__ int test_and_clear_bit(int nr, volatile unsigned long * addr) static __inline__ int test_and_change_bit(int nr, volatile unsigned long * addr) { - unsigned long mask = 1UL << CHOP_SHIFTCOUNT(nr); + unsigned long mask = BIT_MASK(nr); unsigned long oldbit; unsigned long flags; - addr += (nr >> SHIFT_PER_LONG); + addr += BIT_WORD(nr); _atomic_spin_lock_irqsave(addr, flags); oldbit = *addr; *addr = oldbit ^ mask; |