它是通过执行一个具有标准参数值的特殊停止和信号汇编指令实现的。

It does so by executing the special stop-and-signal assembly instruction with a standardized argument value.

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然而，如果传递两个vector float作为参数，就会生成fa(浮点加法)指令。

However, if given two vector floats as parameters, it will generate the fa (float add) instruction.

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当一个进程对这个文件执行spu_run ioctl调用时，这个进程本身就会被挂起，而SPU则会开始执行ioctl参数所指向的指令。

When a process performs the SPU_RUN ioctl on this file, the process itself will be suspended and the SPU starts executing at the instruction pointed to by the ioctl argument.

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