On Wed, 2014-04-02 at 12:18 +0200, Mark Wielaard wrote: > Maybe the solution is to have an alternate .debug_aranges header just > for empty units that is as small as possible? Or reuse the existing > header fields as "flag"? Maybe have the proposed header format of issue > 100430.1 but if address_size and segment_size are both zero then no > address range descriptor will be added and that headers signals a > "no-address" unit?
I forgot, there is another "solution". You could try to be not as pedantically correct as GDB is following the DWARF standard. elfutils tools like eu-addr2line and the libdwfl library functions to map addresses to debug lines or DIEs for example just assume aranges isn't an optional thing and that it will always be complete. That makes the elfutils tools a lot faster than GDB, but obviously not as universal (they just fail to match if no aranges are found). For this to work for other tools however the indexes should be "upgraded" from quality of service to mandatory. Cheers, Mark _______________________________________________ Dwarf-Discuss mailing list Dwarf-Discuss@lists.dwarfstd.org http://lists.dwarfstd.org/listinfo.cgi/dwarf-discuss-dwarfstd.org
