所以,在这个函数中,我们使用了回链指针、链接寄存器保存区和一个本地变量。
So, in this function, we are using the back chain pointer, the link register save area, and one local variable.
本地变量空间用作该函数的通用存储空间,寄存器保存区用于保存函数所使用的非可变寄存器的值。
The local variable space is used as a general storage area for the function, and the register save area is used to save the values of non-volatile registers that the function USES.
例如,通过调用一个可以为SESSION_USER特殊寄存器提供值的函数来设置变量,使用它取回当前用户的部门编号。
For example, a variable could be set by invoking a function that supplies the value of the SESSION_USER special register to fetch the department number for the current user.
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