each exported symbol and we compute the ELF hash value for it.
(compute_bucket_value): New function. It is called from
size_dynamic_sections to determine the hash table size. When we are
optimizing a better, but slower, algorithm is used.
(size_dynamic_sections): Call compute_bucket_value.
* elf32-i386.c (elf_backend_got_header_size): Define.
(elf_backend_plt_header_size): Define.
* elf32-m68k.c, elf32-mips.c, elf32-ppc.c: Likewise.
* elf32-sparc.c, elf64-alpha.c, elf64-sparc.c: Likewise.
* elfxx-target.h: Provide a default of zero.
* elflink.c (_bfd_elf_create_got_section): Use got_header_size.
* elflink.h (elf_gc_common_finalize_got_offsets): Likewise.
* elf32-ppc.c (ppc_elf_adjust_dynamic_symbol): Don't remove a PLT
entry from an executable, even if the plt refcount goes to 0.
* elf32-m68k.c (elf_m68k_check_relocs): Also reference count
R_68K_PCxx and R_68K_xx relocations. Make sure that
ELF_LINK_HASH_NEEDS_PLT is always set for a PLT reloc reference.
(elf_m68k_gc_sweep_hook): Also reference count R_68K_PCxx and
R_68K_xx relocations.
(elf_m68k_adjust_dynamic_symbol): Reset the plt offset of a symbol
that has no plt entry.
(elf_m68k_relocate_section): Ignore the plt offset in a static
link.
* elflink.h (elf_adjust_dynamic_symbol): Reset the plt offset for
an ignored symbol.
(elf_gc_common_finalize_got_offsets): Set the got offsets also in
a static link.
* elf32-m68k.c (R_68K_GNU_VTINHERIT, R_68K_GNU_VTENTRY): New reloc
types.
(howto_table, reloc_map): Add entries for them.
(elf_m68k_check_relocs): Handle them. Implement reference
counting for got and plt entries.
(elf_m68k_gc_mark_hook, elf_m68k_gc_sweep_hook): New functions.
(elf_m68k_adjust_dynamic_symbol): Handle unreferenced plt
symbols.
(rtype_to_howto_rel, elf_info_to_howto_rel): Delete.
(elf_m68k_relocate_section): Handle the new reloc types.
(bfd_elf32_bfd_final_link, elf_backend_gc_mark_hook,
elf_backend_gc_sweep_hook, elf_backend_can_gc_sections): Define.
* elflink.h (elf_link_add_object_symbols): When creating an
indirect reference for symbol versioning also copy the plt
offset.
(elf_fix_symbol_flags): When clearing the ELF_LINK_HASH_NEEDS_PLT
flag also reset the plt offset.
(elf_link_assign_sym_version): Likewise.
(elf_gc_common_finalize_got_offsets): Increment the got offset by
the size of the entry in bytes.
(elf_gc_allocate_got_offsets): Likewise.
Tue Jul 14 11:18:14 1998 Ian Lance Taylor <ian@cygnus.com>
* elflink.h (elf_gc_sections): Return true rather than falling off
the bottom.
* elf-bfd.h (struct elf_backend_data): Add plt_alignment member.
* elflink.c (_bfd_elf_create_got_section): Set .got alignment based
on arch_size.
(_bfd_elf_create_dynamic_sections): Likewise for .rel* sections.
Set .plt alignment from new plt_alignment.
* elflink.h (elf_link_create_dynamic_sections): Set version section
alignment to LOG_FILE_ALIGN.
* elfxx-target.h (elf_backend_plt_alignment): Provide default.
(elfXX_bed): Init plt_alignment.
* elf64-sparc.c (sparc64_elf_check_relocs,
sparc64_elf_adjust_dynamic_symbol, sparc64_elf_size_dynamic_sections,
sparc64_elf_adjust_dynindx, sparc64_elf_finish_dynamic_symbol,
sparc64_elf_finish_dynamic_sections): New functions.
(sparc64_elf_howto_table): Fix a few name strings.
(ELF_DYNAMIC_INTERPRETER): New definition.
(sparc64_elf_relocate_section): Handle shared libraries.
* elf64-sparc.c (struct plt_template, plt_*_header, plt_*_entry,
sparc64_elf_build_plt_entry, sparc64_elf_finish_dynamic_symbol):
PLT definitions sparc64-linux originally choose. These will go
away soon in favour of the official abi definitions.
* elflink.h (NAME(bfd_elf,record_link_assignment)): Remove any
version info if this symbol came from a dynamic object.
(elf_link_add_object_symbols): Set the version info of a symbol
only if the object actually contains version definitions and
defines this symbol.
symbol overriding an old defined symbol, return the hash table
entry which we modify, even if it is the target of an
indirection.
(elf_link_add_object_symbols): If the real name of the symbol gets
overridden, convert the versioned symbol into an indirect symbol
to the real symbol.
elf_link_assign_sym_version before elf_adjust_dynamic_symbol.
(elf_fix_symbol_flags): New static function, broken out of
elf_adjust_dynamic_symbol.
(elf_adjust_dynamic_symbol): Call elf_fix_symbol_flags.
(elf_link_assign_sym_version): Likewise. Permit a symbol to be
forced local even if NEEDS_PLT is set. When forcing a symbol to
be local, clear NEEDS_PLT.
(elf_link_output_extsym): Remove unused local bed.
for a symbol which is being forced to be local.
* elf32-i386.c (elf_i386_relocate_section): Write out the
relocation value for a GOT reloc for a symbol which is turning
into a local symbol.
(elf_i386_finish_dynamic_symbol): If a symbol is turning into a
local symbol, write out a RELATIVE reloc rather than a GLOB_DAT
reloc.
* elf32-m68k.c, elf32-sparc.c: Corresponding changes.
information by calling `_bfd_elf_slurp_version_tables'.
(elf_link_add_object_symbols): For undefined symbols look for
version informaiton in the verneed records.
(elf_link_add_object_symbols): Use soname of shared object
for verneed record if it is available.
alignment of a common symbol. If two symbols that look like
common symbols are found in two shared libraries, and the size is
different, use the larger size, and warn if --warn-common. If a
common symbol overrides a definition in a shared library, set the
size to the larger size, and warn if --warn-common.
symbol. Check for memory allocation failure of *psinfo.
(_bfd_write_section_stabs): Add psinfo parameter. Change all
callers. Set the value of the header symbol.
* libbfd-in.h (_bfd_write_section_stabs): Update declaration.
* libbfd.h: Rebuild.
setting ever. Sanity check the version number. Sort out copying
flags and other information when adding an indirect symbol.
(NAME(bfd_elf,size_dynamic_sections)): Preserve any dynamic
symbols added by the backend. Clear the entire contents of the
versym section.
(elf_export_symbol): Ignore indirect symbols.
(elf_link_output_extsym): Accept a section without an owner in an
assert.
* elfcode.h (elf_slurp_symbol_table): Add a sanity check on the
version count. Correct the allocation of x_versymp.
* elf-bfd.h (ELF_LINK_FORCED_LOCAL): Define.
* elf.c (bfd_elf_print_symbol): Correct errors in last change.
* elflink.h (elf_link_add_object_symbols): Handle cases in which a
versioned symbol appears in both a regular and a shared object.
(elf_link_assign_sym_version): Set ELF_LINK_FORCED_LOCAL when
appropriate. Improve error message.
(struct elf_outext_info): Rename from elf_finfo_failed. Change
all uses. Add localsyms field.
(elf_bfd_final_link): When generating a shared library, call
elf_link_output_extsym to output all local symbols.
(elf_link_output_extsym): Handle symbols which were forced to
become local.
