1 #ifndef _MACHINE_INSTR_H
2 #define _MACHINE_INSTR_H
4 static inline long compare_and_swap(long *p, long oldval, long newval)
8 __asm__ __volatile__ ("\n\
16 " : "=&r"(ret), "=&r"(temp)
17 : "r"(oldval), "r"(newval), "r"(p) : "cr0", "memory");
22 #define STORE_ORDER_BARRIER() __asm__ __volatile__ ("" : : : "memory");
23 #define MEMORY_BARRIER_AFTER_ATOMIC() __asm__ __volatile__ ("isync" : : : "memory");
24 #define MEMORY_BARRIER() __asm__ __volatile__ ( "sync" : : : "memory" );