EhHdrTable::lookup takes an address and finds the entry in the table whose address is closest to the looked up address. Then it drops that entry's address on the floor and only returns the "FDE pointer" part of the entry.

I think it would be great if both parts of the entry were returned: The entry address and the entry FDE pointer.

I am interested in the address as an approximation for "the closest function start address". I could of course get that address by parsing the eh_frame section and looking up the FDE, but this seems like a waste if what I'm looking for is already in eh_frame_hdr.