Generally, they start off with a "base" set of data that is known to be available to the program — stack data, global variables, and registers.
通常，它们以程序所知的可用的一组“基本”数据——栈数据、全局变量、寄存器——作为出发点。
2
However, since the base case doesn't call any other functions, you don't need to load the link register from the stack frame — the value is still there.
但由于基线条件并不调用任何其他函数，所以无需从堆栈框架加载链接寄存器——值还在原处。
3
Service Discovery Protocol (SDP) is one core protocol of bluetooth protocol stack, an important part of bluetooth system and the base of all user mode.