| 31,10 → 31,36 |
|---|
| |
| #include <arch/types.h> |
| |
| extern void atomic_inc(volatile int *val); |
| extern void atomic_dec(volatile int *val); |
| static inline void atomic_inc(volatile int *val) { |
| #ifdef __SMP__ |
| __asm__ volatile ("lock incl (%0)\n" : : "r" (val)); |
| #else |
| __asm__ volatile ("incl (%0)\n" : : "r" (val)); |
| #endif /* __SMP__ */ |
| } |
| |
| extern int test_and_set(int *val); |
| static inline void atomic_dec(volatile int *val) { |
| #ifdef __SMP__ |
| __asm__ volatile ("lock decl (%0)\n" : : "r" (val)); |
| #else |
| __asm__ volatile ("decl (%0)\n" : : "r" (val)); |
| #endif /* __SMP__ */ |
| } |
| |
| static inline int test_and_set(int *val) { |
| int v; |
| |
| __asm__ volatile ( |
| "movl $1, %0\n" |
| "xchgl %0, (%1)\n" |
| : "=r" (v) |
| : "r" (val) |
| ); |
| |
| return v; |
| } |
| |
| |
| extern void spinlock_arch(int *val); |
| |
| #endif |