[PATCH v2] Support multiple .eh_frame sections

[Nick Clifton]

Hi Jojo,

> 	This patch is based on MULTIPLE_FRAME_SECTIONS and EH_FRAME_LINKONCE,
> 	it allows backend to enable this feature and use '--gc-sections' simply.

Do you (or your employer) have a copyright assignment on file with the FSF for
contributions to the GNU Binutils project ?  If not, are you willing to contribute
the patch with a DCO attached ?   https://developercertificate.org/


>   _bfd_elf_default_action_discarded (asection *sec)
>   {
> +  const struct elf_backend_data *bed;
> +  bed = get_elf_backend_data (sec->owner);
> +
> +  if (bed->elf_backend_can_make_multiple_eh_frame
> +      && strncmp (sec->name, ".eh_frame.", 10) == 0)
> +    return 0;
> +
>     if (sec->flags & SEC_DEBUGGING)
>       return PRETEND;

I think that this test would be better if it was moved down a few lines,
until it was just after this test:

   if (strcmp (".eh_frame", sec->name) == 0)
     return 0;


> +	  exp.X_op = O_symbol;
> +	  exp.X_add_symbol = (symbolS *) local_symbol_make (cseg->name, cseg, 0, frch->frch_root);;
> +	  exp.X_add_number = 0;

The arguments to local_symbol_make() are in the wrong order:

   struct local_symbol *local_symbol_make (const char *, segT, fragS *, valueT);

Ie the frag should come before the value.

Also there is a double semi-colon at the end of the line.

Cheers
   Nick