| 29,17 → 29,22 |
|---|
| #ifndef __amd64_ATOMIC_H__ |
| #define __amd64_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 !!! |
| */ |
| |
| static inline atomic_inc(volatile int *val) { |
| *val++; |
| /* Count_t is 32-bits on AMD-64 */ |
| static inline void atomic_inc(volatile count_t *val) { |
| #ifdef __SMP__ |
| __asm__ volatile ("lock incl (%0)\n" : : "r" (val)); |
| #else |
| __asm__ volatile ("incl (%0)\n" : : "r" (val)); |
| #endif /* __SMP__ */ |
| } |
| |
| static inline atomic_dec(volatile int *val) { |
| *val--; |
| static inline void atomic_dec(volatile count_t *val) { |
| #ifdef __SMP__ |
| __asm__ volatile ("lock decl (%0)\n" : : "r" (val)); |
| #else |
| __asm__ volatile ("decl (%0)\n" : : "r" (val)); |
| #endif /* __SMP__ */ |
| } |
| |
| #endif |