Re: How and When a frame is constructed

[kceiwH <kceiwh@gmail.com>]

And I wonder if I know the values of all registers, could I construct  
a frame from those values?

Regards,

Mao


On Aug 5, 2009, at 9:44 AM, kceiwH wrote:

> Hi,
>
> When I read GDB source codes, I don't understand how a frame is  
> constructed, and when.
> As far as I know, get_current_frame is used to get a current frame.  
> When current_frame is NULL, it will construct a sentinel_frame and  
> unwind it to get current_frame. But I don't know where current_frame  
> will be updated except get_current_frame. The
>
> I also guess that the frame stack will be updated when the inferior  
> is running, stepped. But I still don't find the code to update the  
> frame stack.
>
> I'm wondering when the first frame is constructed and pushed to  
> frame stack and how to push to and pop from frame stack.
>
> Thanks in advance.
>
> Best Wishes,
>
> Mao