ecx

And the % ecx register explicitly loads the count .

ecx寄存器明确装入count。

The count value is put into % ecx as it is needed by rep prefix .

因为rep前缀需要count值，所以将它放入%ecx中。

Unless this is done , GCC assumes that % eax and % ecx are free , and it may decide to use them for storing other data .

在完成这一步之前，GCC假设%eax和%ecx是自由的，它可能决定将它们用作存储其它的数据。

But GCC won 't know this unless we inform it , which is exactly what we do by including % eax and % ecx in the clobbered register set .

但GCC在我们通知它以前是不知道这些的，我们是通过将%eax和%ecx包括在修饰寄存器集中来通知GCC的。

In the following example , the cpuid instruction takes the input in the % eax register and gives output in four registers : % eax , % ebx , % ecx , % edx .

在下面的示例中，cpuid指令采用%eax寄存器中的输入，然后在四个寄存器中给出输出：%eax、%ebx、%ecx、%edx。