src/sys/arch/ia64/include/lock.h - diff

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version 1.2.4.1, 2008/05/16 02:22:41

version 1.2.4.2, 2009/08/19 18:46:23

Line 92 __cpu_simple_lock_try(__cpu_simple_lock_

uint8_t val;

val = __SIMPLELOCK_LOCKED;

/* __asm volatile ("xchgb %0,(%2)" :

__asm volatile ("xchg1 %0=[%1],%2" :

"=r" (val)

:"0" (val), "r" (lockp)); */

:"r" (lockp), "r" (val)

__insn_barrier();

:"memory");

return val == __SIMPLELOCK_UNLOCKED;

}