diff options
Diffstat (limited to 'arch/sh/include/asm/atomic-llsc.h')
| -rw-r--r-- | arch/sh/include/asm/atomic-llsc.h | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/arch/sh/include/asm/atomic-llsc.h b/arch/sh/include/asm/atomic-llsc.h index 33d34b16d4d6..caea2c45f6c2 100644 --- a/arch/sh/include/asm/atomic-llsc.h +++ b/arch/sh/include/asm/atomic-llsc.h @@ -48,15 +48,39 @@ static inline int atomic_##op##_return(int i, atomic_t *v) \ return temp; \ } -#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op) +#define ATOMIC_FETCH_OP(op) \ +static inline int atomic_fetch_##op(int i, atomic_t *v) \ +{ \ + unsigned long res, temp; \ + \ + __asm__ __volatile__ ( \ +"1: movli.l @%3, %0 ! atomic_fetch_" #op " \n" \ +" mov %0, %1 \n" \ +" " #op " %2, %0 \n" \ +" movco.l %0, @%3 \n" \ +" bf 1b \n" \ +" synco \n" \ + : "=&z" (temp), "=&z" (res) \ + : "r" (i), "r" (&v->counter) \ + : "t"); \ + \ + return res; \ +} + +#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_OP_RETURN(op) ATOMIC_FETCH_OP(op) ATOMIC_OPS(add) ATOMIC_OPS(sub) -ATOMIC_OP(and) -ATOMIC_OP(or) -ATOMIC_OP(xor) #undef ATOMIC_OPS +#define ATOMIC_OPS(op) ATOMIC_OP(op) ATOMIC_FETCH_OP(op) + +ATOMIC_OPS(and) +ATOMIC_OPS(or) +ATOMIC_OPS(xor) + +#undef ATOMIC_OPS +#undef ATOMIC_FETCH_OP #undef ATOMIC_OP_RETURN #undef ATOMIC_OP |