assembly - push return values in stack frame

Question

I'm wondering if it makes sense to push the return value of a function in its the stack-frame.

I know return values are mostly stored in registers (eax for gcc), but is it for performance only?

Thanks!

Answer 1

这是有道理的，但必须手动插入（而不是简单的推送）。它的“空间”应该由调用者“分配”（它必须在调用函数之前减少 sp）因为当你从函数返回时 - 返回地址必须在堆栈的顶部，所以返回值应该是在退货地址下方。[与在堆栈上传递参数的原理相同]