Re: Any option to objdump just one function ?

[Nick Clifton <nickc at redhat dot com>]

Hi Robert,

> I used objdump to dump the kernel image.
> And I want to locate to the position of __memzero.
> But I can't find any option that support to output the assembly code of
> one specified function but only in the section range.
> Is it correct ?

Essentially yes.  You can restrict disassembly to a range of addresses 
by using the --start-address= and --stop-address= options, but you would 
need to work out the addresses before hand.

Alternatively if you have compiled your application with gcc's 
-ffunction-section option then you can use objdump's --section= option 
to restrict disassembly to just that section.  But I doubt if you have 
built your kernel image that way.

Of course you can always pipe the output from objdump into a file and 
then use various tools (sed/perl/awk) to cut out the parts that you do 
not need.

Cheers
  Nick