gistfile1.txt

	asm volatile("movzwl %2, %0\n\t"
		     "cmpb %h0,%b0\n\t"
		     "leal 0x100(%" REG_PTR_MODE "0), %1\n\t"
		     "jne 1f\n\t"
		     LOCK_PREFIX "cmpxchgw %w1,%2\n\t"
		     "1:"
		     "sete %b1\n\t"
		     "movzbl %b1,%0\n\t"
		     : "=&a" (tmp), "=&q" (new), "+m" (lock->slock)
		     :
		     : "memory", "cc");