| /branches/dynload/kernel/arch/arm32/include/atomic.h |
|---|
| 42,6 → 42,7 |
| * @param i Value to be added. |
| * |
| * @return Value after addition. |
| * |
| */ |
| static inline long atomic_add(atomic_t *val, int i) |
| { |
| 50,15 → 51,14 |
| asm volatile ( |
| "1:\n" |
| "ldr r2, [%1] \n" |
| "add r3, r2, %2 \n" |
| "str r3, %0 \n" |
| "swp r3, r3, [%1] \n" |
| "ldr r2, [%[mem]]\n" |
| "add r3, r2, %[i]\n" |
| "str r3, %[ret]\n" |
| "swp r3, r3, [%[mem]]\n" |
| "cmp r3, r2 \n" |
| "bne 1b \n" |
| : "=m" (ret) |
| : "r" (mem), "r" (i) |
| : [ret] "=m" (ret) |
| : [mem] "r" (mem), [i] "r" (i) |
| : "r3", "r2" |
| ); |