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- #define a_cas a_cas
- static inline int a_cas(volatile int *p, int t, int s)
- {
- __asm__("\n"
- " sync\n"
- "1: lwarx %0, 0, %4\n"
- " cmpw %0, %2\n"
- " bne 1f\n"
- " stwcx. %3, 0, %4\n"
- " bne- 1b\n"
- " isync\n"
- "1: \n"
- : "=&r"(t), "+m"(*p) : "r"(t), "r"(s), "r"(p) : "cc", "memory" );
- return t;
- }
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