大多数指令都遵循类似的格式，结果存储在第一个操作数内指定的寄存器中。
Most instructions follow a similar format, with the register that holds the result specified in the first operand.
请记住链接寄存器存储在调用函数的堆栈框架内，而非函数自身的堆栈框架。
Remember that the link register is stored in the calling function's stack frame, not the function's own stack frame.
所有标有可变的寄存器都可以在函数内自由改变。
All of the registers marked volatile can be freely changed within a function.
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