eax

The service code is present in the EAX register .

服务编码放在EAX寄存器中。

Thus % eax serves here as both input and output register .

这样，这里的%eax既可以用作输入寄存器，又可以用作输出寄存器。

Research on Optimizing Encryption-authentication Mode of EAX in AES Algorithm

AES算法EAX加密认证模式优化技术研究

After a few simple tests , the actual system call is invoked using the system_call_table and index contained in eax .

在经过几个简单测试之后，使用systemcalltable和eax中包含的索引来执行真正的系统调用了。

A value of1 ( for the Linux exit system call ) is stored in EAX to request that the program exit .

EAX中存储的值是1（代表Linuxexit系统调用），这请求程序退出。

That is , if eax has to be used , it should be used as % eax .

即，如果必须使用eax，它应该用作%eax。

And since % eax is specified in the clobbered list , GCC doesn 't use it anywhere else to store data .

因为%eax是在修饰列表中指定的，GCC不在任何其它地方使用它来存储数据。

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。

The eax register is used to identify the particular system call that should be invoked , which is specified in the C library ( per the call from the user-space application ) .

eax寄存器用来标识应当调用的某个系统调用，这在C库中做了指定（来自用户空间应用程序的每个调用）。

The CPU chooses the AL , AX , or EAX register depending on the width of the operand ( 8,16 , or32 bits ) .

CPU根据操作数的宽度（8、16或32）选择AL、AX或EAX寄存器。

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。

The bad-reaction incidence of Group A was obviously lower than that of Group B ( P < 0.05 ), suggesting that EAX has good safety and significant therapeutic effect on KOA , having an obvious advantage over oral SVT in improving the stiffness and function .

电针组不良反应发生率显著低于扶他林组（P<0.05）。结论表明，电针膝眼穴治疗膝关节骨关节炎有显著疗效及安全性良好。