| 37,6 → 37,7 |
|---|
| |
| #include <arch/barrier.h> |
| #include <arch/types.h> |
| #include <preemption.h> |
| |
| /** Atomic add operation. |
| * |
| 56,7 → 57,8 |
|---|
| |
| a = *((uint64_t *) x); |
| b = a + i; |
| asm volatile ("casx %0, %2, %1\n" : "+m" (*((uint64_t *)x)), "+r" (b) : "r" (a)); |
| asm volatile ("casx %0, %2, %1\n" : "+m" (*((uint64_t *)x)), |
| "+r" (b) : "r" (a)); |
| } while (a != b); |
| |
| return a; |
| 97,7 → 99,8 |
|---|
| uint64_t v = 1; |
| volatile uintptr_t x = (uint64_t) &val->count; |
| |
| asm volatile ("casx %0, %2, %1\n" : "+m" (*((uint64_t *) x)), "+r" (v) : "r" (0)); |
| asm volatile ("casx %0, %2, %1\n" : "+m" (*((uint64_t *) x)), |
| "+r" (v) : "r" (0)); |
| |
| return v; |
| } |
| 109,6 → 112,8 |
|---|
| |
| volatile uintptr_t x = (uint64_t) &val->count; |
| |
| preemption_disable(); |
| |
| asm volatile ( |
| "0:\n" |
| "casx %0, %3, %1\n" |