BFD support for ELF formats is being worked on. Currently, the best supported back ends are for sparc and i386 (running svr4 or Solaris 2).
Documentation of the internals of the support code still needs to be written. The code is changing quickly enough that we haven't bothered yet.
struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name);
Helper functions for GDB to locate the string tables. Since BFD hides string tables from callers, GDB needs to use an internal hook to find them. Sun's .stabstr, in particular, isn't even pointed to by the .stab section, so ordinary mechanisms wouldn't work to find it, even if we had some.