_dwarf_add_to_files_list
int _dwarf_add_to_files_list(Dwarf_Line_Context context, Dwarf_File_Entry fe);
_dwarf_add_to_files_list(line_context,
_dwarf_add_to_files_list(line_context,currfile);
_dwarf_add_to_files_list(line_context,curline);