relocatable link too.
(elf_link_input_bfd): When emitting relocs, adjust offsets for
eh_frame and stab sections. Zap deleted relocs.
(elf_reloc_symbol_deleted_p): Return true for zero r_symndx.
(elf_bfd_discard_info): Run for relocatable link too.
* elf64-ppc.c (ppc64_elf_edit_opd): Rename from edit_opd. Make global.
Handle ld -r case.
(ppc64_elf_size_dynamic_sections): Don't call edit_opd from here.
* elf64-ppc.h (ppc64_elf_edit_opd): Declare.
(ppc64_elf_ha_reloc): New function.
(ppc64_elf_brtaken_reloc): New function.
(ppc64_elf_sectoff_reloc): New function.
(ppc64_elf_sectoff_ha_reloc): New function.
(ppc64_elf_toc_reloc): New function.
(ppc64_elf_toc_ha_reloc): New function.
(ppc64_elf_toc64_reloc): New function.
(ppc64_elf_unhandled_reloc): New function.
(ppc64_elf_howto_raw): Use the above.
<R_PPC64_RELATIVE>: Mark pc_relative, pcrel_offset.
<R_PPC64_SECTOFF>: Not pc_relative or pcrel_offset. Fix dst_mask.
<R_PPC64_SECTOFF_DS>: Likewise.
(IS_ABSOLUTE_RELOC): Update.
(struct ppc_link_hash_table): Add have_undefweak.
(ppc64_elf_link_hash_table_create): Init.
(func_desc_adjust): Set have_undefweak.
(ppc64_elf_func_desc_adjust): Call func_desc_adjust earlier. Only
add the .sfpr blr when have_undefweak.
(ppc64_elf_setup_section_lists): Check hash table flavour.
(ppc64_elf_next_input_section): Move output_section->owner test to
ppc64elf.em.
(ppc64_elf_set_toc): Rename to ppc64_elf_toc, remove info param
and relocatable test. Return TOCstart and don't set elf_gp.
(ppc64_elf_relocate_section): Correct BRTAKEN/BRNTAKEN branch
offset calculation. Add assert on weak sym branch tweaks.
* elf64-ppc.h (ppc64_elf_set_toc): Delete.
(ppc64_elf_toc): Declare.
(ppc64_elf_next_input_section): Update.
* emultempl/ppc64elf.em (gld${EMULATION_NAME}_after_allocation):
Adjust for ppc64_elf_set_toc change. #include libbfd.h.
(build_section_lists): Do output_section tests here.
(ppc64_elf_relocate_section): Use them. Don't look for plt calls
on R_PPC64_ADDR24 relocs. Require a nop or no link reg on plt
call branches. Correct undefined weak destination.
(ppc64_elf_func_desc_adjust): Always create at least one blr in
.sfpr, and correct case where either only savef* or restf* is
needed.
Long branch stubs, multiple stub sections.
* elf64-ppc.h (ppc64_elf_setup_section_lists): Declare.
(ppc64_elf_next_input_section): Declare.
* elf64-ppc.c: Move linker-only prototypes.
(STUB_SUFFIX): Define.
(enum ppc_stub_type): New.
(struct ppc_stub_hash_entry): New.
(struct ppc_branch_hash_entry): New.
(struct ppc_link_hash_entry): Add stub_cache, oh.
(struct ppc_link_hash_table): Add stub_hash_table etc. Remove
sstub. Add sbrlt, srelbrlt, has_14bit_branch, stub_iteration.
Rename plt_overflow to stub_error.
(ppc_stub_hash_lookup): Define.
(ppc_branch_hash_lookup): Define.
(stub_hash_newfunc): New function.
(branch_hash_newfunc): New function.
(link_hash_newfunc): Init new fields.
(ppc64_elf_link_hash_table_create): Likewise.
(ppc64_elf_link_hash_table_free): New function.
(ppc_stub_name): New function.
(ppc_get_stub_entry): New function.
(ppc_add_stub): New function.
(create_linkage_sections): Use bfd_make_section_anyway. Create
.branch_lt and .rela.branch_lt sections. Don't create .stub.
(ppc64_elf_check_relocs): Set has_14bit_branch on R_PPC64_REL14*,
and set up for plt call stubs. Link func and func desc syms.
(ppc64_elf_gc_sweep_hook): Handle REL14* as per REL24.
(func_desc_adjust): Avoid hash lookup when func desc sym available
via shortcut, and set links when processing.
(ppc64_elf_hide_symbol): Likewise.
(allocate_dynrelocs): Don't allocate stub section here.
(ppc64_elf_size_dynamic_sections): Handle sbrlt and srelbrlt.
Remove sstub code.
(ppc_type_of_stub): New function.
(build_one_stub): Delete.
(ppc_build_one_stub): New function.
(ppc_size_one_stub): New function.
(ppc64_elf_setup_section_lists): New function.
(ppc64_elf_next_input_section): New function.
(group_sections): New function.
(get_local_syms): New function.
(ppc64_elf_size_stubs): Rewrite.
(ppc64_elf_build_stubs): Rewrite.
(ppc64_elf_relocate_section): Look up stub entry for REL24
relocs. Don't propagate REL14* to dynamic objects. Look for long
branch stubs if REL14* or REL24 relocs won't reach.
(bfd_elf64_bfd_link_hash_table_free): Define.
Alan Modra