+ elf_backend_parse_gnu_properties,
+ elf_backend_merge_gnu_properties,
+ elf_backend_setup_gnu_properties,
+ elf_backend_fixup_gnu_properties,
+ elf_backend_compact_eh_encoding,
+ elf_backend_cant_unwind_opcode,
+ elf_backend_symbol_section_index,
+ elf_backend_init_secondary_reloc_section,
+ elf_backend_slurp_secondary_reloc_section,
+ elf_backend_write_secondary_reloc_section,