指令地址寄存器(instruction address register)是指存放指令地址的寄存器,又称指令计数器。控制器根据指令计数器中存放的指令地址,从内存贮器中将指令取出到指令寄存器中,然后对该指令进行分析,且执行之,同时在指令计数器中自动形成下一条指令的地址。
iar -指令地址寄存器。
所以该指令会将链接寄存器(存有返回地址)存储到调用函数堆栈框架的恰当位置。
So this instruction stores the link register (which holds the return address) into the proper location in the calling function's stack frame.
PPE用载入和存储指令访问主存储器(有效地址空间),可以在主存储器与内容可以缓存的私有寄存器文件之间移动数据。
The PPE accesses main storage (the effective-address space) with load and store instructions that move data between main storage and a private register file, the contents of which may be cached.
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