gdb frames

[Vineet Sharma, Noida]

Hi All,
          I am trying to undertsand the working of gdb, but i get lost . Plz
can one tell me once a "NORMAL_STACK" is created by get_frame_language()
with level -1 . Who and where is the stack for actuall main() is created,
none of my functions for extra_info, chain are being called, niether is my
PC set?. How does this all works?


What is the normal flow for stacks?


Secondly:
             For new target should we not use DEPRECATED function?


Regards
Vineet