| 29,17 → 29,23 |
|---|
| #ifndef __ia64_ATOMIC_H__ |
| #define __ia64_ATOMIC_H__ |
| |
| /* |
| * TODO: these are just placeholders for real implementations of atomic_inc and atomic_dec. |
| * WARNING: the following functions cause the code to be preemption-unsafe !!! |
| */ |
| #include <arch/types.h> |
| |
| static inline atomic_inc(volatile int *val) { |
| *val++; |
| } |
| typedef volatile __u64 atomic_t; |
| |
| static inline atomic_dec(volatile int *val) { |
| *val--; |
| static inline atomic_t atomic_add(atomic_t *val, int imm) |
| { |
| atomic_t v; |
| |
| /* |
| * __asm__ volatile ("fetchadd8.rel %0 = %1, %2\n" : "=r" (v), "=m" (val) : "i" (imm)); |
| */ |
| *val += imm; |
| |
| return v; |
| } |
| |
| static inline atomic_t atomic_inc(atomic_t *val) { return atomic_add(val, 1); } |
| static inline atomic_t atomic_dec(atomic_t *val) { return atomic_add(val, -1); } |
| |
| #endif |