现在假设所处理的寄存器3中的数值为非零，这就意味着需要进行递归的步骤。
Now assume that the number you are working with in register 3 is not zero. This means that you need to do a recursive step.
Linux POSIX信号使用sem_wait来挂起发出调用的线程，直到信号拥有了非零的计数值。
Linux POSIX semaphores use sem_wait to suspend the calling thread until the semaphore has a non-zero count.
错误的时间间隔数值。请指定正确的非零整数。
Incorrect interval value. Please specify positive nonzero integer.
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