diff options
Diffstat (limited to 'arch/arm/include/asm/bitops.h')
| -rw-r--r-- | arch/arm/include/asm/bitops.h | 60 |
1 files changed, 22 insertions, 38 deletions
diff --git a/arch/arm/include/asm/bitops.h b/arch/arm/include/asm/bitops.h index 7b1bb2bbaf8..af54ed102f5 100644 --- a/arch/arm/include/asm/bitops.h +++ b/arch/arm/include/asm/bitops.h @@ -149,14 +149,18 @@ ____atomic_test_and_change_bit(unsigned int bit, volatile unsigned long *p) */ /* + * Native endian assembly bitops. nr = 0 -> word 0 bit 0. + */ +extern void _set_bit(int nr, volatile unsigned long * p); +extern void _clear_bit(int nr, volatile unsigned long * p); +extern void _change_bit(int nr, volatile unsigned long * p); +extern int _test_and_set_bit(int nr, volatile unsigned long * p); +extern int _test_and_clear_bit(int nr, volatile unsigned long * p); +extern int _test_and_change_bit(int nr, volatile unsigned long * p); + +/* * Little endian assembly bitops. nr = 0 -> byte 0 bit 0. */ -extern void _set_bit_le(int nr, volatile unsigned long * p); -extern void _clear_bit_le(int nr, volatile unsigned long * p); -extern void _change_bit_le(int nr, volatile unsigned long * p); -extern int _test_and_set_bit_le(int nr, volatile unsigned long * p); -extern int _test_and_clear_bit_le(int nr, volatile unsigned long * p); -extern int _test_and_change_bit_le(int nr, volatile unsigned long * p); extern int _find_first_zero_bit_le(const void * p, unsigned size); extern int _find_next_zero_bit_le(const void * p, int size, int offset); extern int _find_first_bit_le(const unsigned long *p, unsigned size); @@ -165,12 +169,6 @@ extern int _find_next_bit_le(const unsigned long *p, int size, int offset); /* * Big endian assembly bitops. nr = 0 -> byte 3 bit 0. */ -extern void _set_bit_be(int nr, volatile unsigned long * p); -extern void _clear_bit_be(int nr, volatile unsigned long * p); -extern void _change_bit_be(int nr, volatile unsigned long * p); -extern int _test_and_set_bit_be(int nr, volatile unsigned long * p); -extern int _test_and_clear_bit_be(int nr, volatile unsigned long * p); -extern int _test_and_change_bit_be(int nr, volatile unsigned long * p); extern int _find_first_zero_bit_be(const void * p, unsigned size); extern int _find_next_zero_bit_be(const void * p, int size, int offset); extern int _find_first_bit_be(const unsigned long *p, unsigned size); @@ -180,33 +178,26 @@ extern int _find_next_bit_be(const unsigned long *p, int size, int offset); /* * The __* form of bitops are non-atomic and may be reordered. */ -#define ATOMIC_BITOP_LE(name,nr,p) \ - (__builtin_constant_p(nr) ? \ - ____atomic_##name(nr, p) : \ - _##name##_le(nr,p)) - -#define ATOMIC_BITOP_BE(name,nr,p) \ - (__builtin_constant_p(nr) ? \ - ____atomic_##name(nr, p) : \ - _##name##_be(nr,p)) +#define ATOMIC_BITOP(name,nr,p) \ + (__builtin_constant_p(nr) ? ____atomic_##name(nr, p) : _##name(nr,p)) #else -#define ATOMIC_BITOP_LE(name,nr,p) _##name##_le(nr,p) -#define ATOMIC_BITOP_BE(name,nr,p) _##name##_be(nr,p) +#define ATOMIC_BITOP(name,nr,p) _##name(nr,p) #endif -#define NONATOMIC_BITOP(name,nr,p) \ - (____nonatomic_##name(nr, p)) +/* + * Native endian atomic definitions. + */ +#define set_bit(nr,p) ATOMIC_BITOP(set_bit,nr,p) +#define clear_bit(nr,p) ATOMIC_BITOP(clear_bit,nr,p) +#define change_bit(nr,p) ATOMIC_BITOP(change_bit,nr,p) +#define test_and_set_bit(nr,p) ATOMIC_BITOP(test_and_set_bit,nr,p) +#define test_and_clear_bit(nr,p) ATOMIC_BITOP(test_and_clear_bit,nr,p) +#define test_and_change_bit(nr,p) ATOMIC_BITOP(test_and_change_bit,nr,p) #ifndef __ARMEB__ /* * These are the little endian, atomic definitions. */ -#define set_bit(nr,p) ATOMIC_BITOP_LE(set_bit,nr,p) -#define clear_bit(nr,p) ATOMIC_BITOP_LE(clear_bit,nr,p) -#define change_bit(nr,p) ATOMIC_BITOP_LE(change_bit,nr,p) -#define test_and_set_bit(nr,p) ATOMIC_BITOP_LE(test_and_set_bit,nr,p) -#define test_and_clear_bit(nr,p) ATOMIC_BITOP_LE(test_and_clear_bit,nr,p) -#define test_and_change_bit(nr,p) ATOMIC_BITOP_LE(test_and_change_bit,nr,p) #define find_first_zero_bit(p,sz) _find_first_zero_bit_le(p,sz) #define find_next_zero_bit(p,sz,off) _find_next_zero_bit_le(p,sz,off) #define find_first_bit(p,sz) _find_first_bit_le(p,sz) @@ -215,16 +206,9 @@ extern int _find_next_bit_be(const unsigned long *p, int size, int offset); #define WORD_BITOFF_TO_LE(x) ((x)) #else - /* * These are the big endian, atomic definitions. */ -#define set_bit(nr,p) ATOMIC_BITOP_BE(set_bit,nr,p) -#define clear_bit(nr,p) ATOMIC_BITOP_BE(clear_bit,nr,p) -#define change_bit(nr,p) ATOMIC_BITOP_BE(change_bit,nr,p) -#define test_and_set_bit(nr,p) ATOMIC_BITOP_BE(test_and_set_bit,nr,p) -#define test_and_clear_bit(nr,p) ATOMIC_BITOP_BE(test_and_clear_bit,nr,p) -#define test_and_change_bit(nr,p) ATOMIC_BITOP_BE(test_and_change_bit,nr,p) #define find_first_zero_bit(p,sz) _find_first_zero_bit_be(p,sz) #define find_next_zero_bit(p,sz,off) _find_next_zero_bit_be(p,sz,off) #define find_first_bit(p,sz) _find_first_bit_be(p,sz) |