Reading Split Dwarf (Debug Fission) data

Example getting cu/tu name, offset.

*/
int exampleza(Dwarf_Xu_Index_Header xuhdr,
    Dwarf_Unsigned offsets_count,
    Dwarf_Unsigned index,
    Dwarf_Error *error)
{
    Dwarf_Unsigned col = 0;
 
    /*  We use  'offsets_count' returned by
        a dwarf_get_xu_index_header() call.
        We use 'index' returned by a
        dwarf_get_xu_hash_entry() call. */
    for (col = 0; col < offsets_count; col++) {
        Dwarf_Unsigned off = 0;
        Dwarf_Unsigned len = 0;
        const char    *name = 0;
        Dwarf_Unsigned num = 0;
        int res = 0;
 
        res = dwarf_get_xu_section_names(xuhdr,
            col,&num,&name,error);
        if (res == DW_DLV_ERROR) {
            return res;
        }
        if (res == DW_DLV_NO_ENTRY) {
            break;
        }
        res = dwarf_get_xu_section_offset(xuhdr,
            index,col,&off,&len,error);
        if (res == DW_DLV_ERROR) {
            return res;
        }
        if (res == DW_DLV_NO_ENTRY) {
            break;
        }
        /*  Here we have the DW_SECT_ name and number
            and the base offset and length of the
            section data applicable to the hash
            that got us here.
            Use the values.*/
    }
    return DW_DLV_OK;
}