The back chain pointer points to the back chain pointer of the previous stack frame.

回链指针指向前一个堆栈框架的回链指针。

youdao

So, in this function, we are using the back chain pointer, the link register save area, and one local variable.

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。

youdao

Each stack frame holds a pointer to the previous stack frame (called the back chain pointer), as well as a space for return addresses for when it calls other functions.

每个堆栈框架都有一个指向前一个堆栈框架的指针(称为回链指针)，还有一个当它调用其他函数时用于存放返回地址的空间。

youdao

What we have done is pushed back the Taliban and what we have done also is start to break that chain of terror that links the mountains of Afghanistan and in Pakistan to the streets of Britain,"

VOA: standard.2009.07.27

Then attach a few lengths of plywood or maybe rubber hose to the back connected by chain links.

FORBES: Still Waiting for the Iceland Sea Worm

Fastening the chain back around her neck, trying to tell by feel whether the catch had closed, she thought of another loophole.

NPR: Excerpt: 'Criss Cross'

The PDE immediately switched over to a back-up chain, and it also shut itself down just in case the anomaly was a problem in the electronics rather than in the physical system itself.

BBC: NEWS | Science/Nature | Space truck orbits despite fault