gc sections and .eh_frame

[Eric Botcazou]

> Indeed so, well thought! I've tested it with powerpc-eabi and it works
> fine. I'm happy with that, great work, thanks!

Thanks for confirming.  However I think I've grasped Alan's remark and we 
indeed risk marking all the functions in a given input file if it happens to 
contain no EH tables because its functions don't need them.

I can think of 2 solutions: a second loop as you initially suggested or to add 
a new parameter 'skip_code' to _bfd_elf_gc_mark to skip SEC_CODE sections 
when it is invoked on .eh_frame.  Alan will decide whether the latter approach 
is easily implementable.

-- 
Eric Botcazou