[PATCH] strip: Deal with ARM data marker symbols pointing to debug sections.

[Mark Wielaard]

On Fri, Jul 21, 2017 at 12:17:40PM +0200, Mark Wielaard wrote:
> ARM data marker symbols "$d" indicate the start of a sequence of data
> items in a section. For data only sections no data marker symbol is
> necessary, but may be put pointing to the start of the section.
> binutils however has a bug which places a data marker symbol somewhere
> inside the section (at least for .debug_frame).
> https://sourceware.org/bugzilla/show_bug.cgi?id=21809
> 
> When strip finds a symbol pointing to a debug section that would be
> put into the .debug file then it will copy over the whole symbol table.
> This isn't necessary because the symbol is redundant.
> 
> Add an ebl hook to recognize data marker symbols with implementations
> for arm and aarch64. Use it in strip to strip such symbols from the
> symbol table if they point to a debug section.

Tested in Fedora rawhide where it fixed an rpm testsuite issue on arm.
Pushed to master.