How to handle debug fission

[jeremy-rifkin]

I'm trying to add support for debug fission/split dwarf to a library I work on for stack tracing. I'm encountering a lot of challenges along the way. For example, if in a split dwarf .dwo file DW_AT_low_pc is an indexed address into the .debug_addr table from the linked binary. When I encounter this in libdwarf I get dwarf error 257 DW_DLE_MISSING_NEEDED_DEBUG_ADDR_SECTION(257). I can check the form of the attribute before calling dwarf_lowpc and do this resolution myself, however, does libdwarf have a way to provide a reference to the main executable's address table? Does libdwarf have any utilities that can make working with split dwarf easier?

[jeremy-rifkin]

Ah, I found dwarf_set_tied_dbg in the documentation which appears to be exactly what I am looking for.

[davea42]

Jeremy answered this himself. dwarf_set_tied_dbg().