1 #ifndef __ASM_SH_BITOPS_CAS_H
2 #define __ASM_SH_BITOPS_CAS_H
4 static inline unsigned __bo_cas(volatile unsigned *p, unsigned old, unsigned new)
6 __asm__ __volatile__("cas.l %1,%0,@r0"
13 static inline void set_bit(int nr, volatile void *addr)
16 volatile unsigned *a = addr;
19 mask = 1U << (nr & 0x1f);
22 while (__bo_cas(a, old, old|mask) != old);
25 static inline void clear_bit(int nr, volatile void *addr)
28 volatile unsigned *a = addr;
31 mask = 1U << (nr & 0x1f);
34 while (__bo_cas(a, old, old&~mask) != old);
37 static inline void change_bit(int nr, volatile void *addr)
40 volatile unsigned *a = addr;
43 mask = 1U << (nr & 0x1f);
46 while (__bo_cas(a, old, old^mask) != old);
49 static inline int test_and_set_bit(int nr, volatile void *addr)
52 volatile unsigned *a = addr;
55 mask = 1U << (nr & 0x1f);
58 while (__bo_cas(a, old, old|mask) != old);
60 return !!(old & mask);
63 static inline int test_and_clear_bit(int nr, volatile void *addr)
66 volatile unsigned *a = addr;
69 mask = 1U << (nr & 0x1f);
72 while (__bo_cas(a, old, old&~mask) != old);
74 return !!(old & mask);
77 static inline int test_and_change_bit(int nr, volatile void *addr)
80 volatile unsigned *a = addr;
83 mask = 1U << (nr & 0x1f);
86 while (__bo_cas(a, old, old^mask) != old);
88 return !!(old & mask);
91 #include <asm-generic/bitops/non-atomic.h>
93 #endif /* __ASM_SH_BITOPS_CAS_H */