document about gnu extended elf sections

[Nick Clifton]

Hi Amker,

> There are some gnu extended elf sections such as ".gnu.attributes"...
> I searched around but seems some of these sections are not documented well.
> So, where could I get some documents about these sections? Any URLs?

You can find a description of the contents of the .gnu.attributes 
section in the assembler manual:

   http://sourceware.org/binutils/docs-2.20/as/GNU-Object-Attributes.html

As for other sections, documentation on them is sparse.  Ian Lance 
Taylor has written a very informative series of blogs on linkers and 
what they do.  In particular you might like to look at:

   http://www.airs.com/blog/archives/52
   http://www.airs.com/blog/archives/54

Which contain descriptions of some of these extra sections.

Cheers
   Nick