mbackchain 和 -mno-backchain：这些选项控制调用方帧的地址是否作为 “backchain” 指针存储到被调用方的堆栈帧。

mbackchain and -mno-backchain: These options control whether the address of the caller's frame is stored as so-called "backchain" pointer into the callee's stack frame.

youdao

这个系统调用要求两个参数：一个包含要分配内存数量的长整数，还有一个存储返回的地址的长整数指针。

The system call is invoked with two arguments: a long integer containing the amount of memory to allocate and a long integer pointer to store the returned address.

youdao

溢和下溢是通过存储在避免使用一个接收地址指针在接收时钟速度递增不同的地址在接收到的数据的FIFO。

Overflow and underflow are averted by storing received data in a FIFO at different addresses using a receive address pointer incremented at a receive clock rate.

youdao

I'm going to delete that arrow and actually draw s2 as pointing to this chunk of memory because whereas before this sequence of chars might have lived at address 71 or whatever, well, this one might live at 91.

我不会把那个箭头删除，实际上我画了s2作为,这块内存的指针，因为,这个字符序列存储在地址71或其它的地方，这个可能存储在91的地方。

哈佛公开课 - 计算机科学课程节选