PR22533, dynamic relocs generated for weak aliases
This cleans up yet more craziness with non_got_ref. PR 22533 * elf32-hppa.c (elf32_hppa_copy_indirect_symbol): Don't do anything special with non_got_ref for weak aliases. (elf32_hppa_check_relocs): Tweak setting of non_got_ref. (elf32_hppa_adjust_dynamic_symbol): When initialising weak aliases, don't uselessly copy non_got_ref. Clear dyn_relocs instead if strong symbol is allocated in dynbss. Tidy comments. (elf32_hppa_relocate_section): Comment fix. * elf32-ppc.c (ppc_elf_copy_indirect_symbol): Don't do anything special with non_got_ref for weak aliases. (ppc_elf_adjust_dynamic_symbol): When initialising weak aliases, don't uselessly copy non_got_ref. Clear dyn_relocs instead if strong symbol is allocated in dynbss. Tidy comments. * elf64-ppc.c (ppc64_elf_copy_indirect_symbol): Don't do anything special with non_got_ref for weak aliases. (ppc64_elf_adjust_dynamic_symbol): When initialising weak aliases, don't uselessly copy non_got_ref. Clear dyn_relocs instead if strong symbol is allocated in dynbss. Tidy comments.
This commit is contained in:
Alan Modra
parent
6f14765f9f
commit
4a7e523498
@ -1,3 +1,24 @@
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2017-12-01 Alan Modra <amodra@gmail.com>
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PR 22533
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* elf32-hppa.c (elf32_hppa_copy_indirect_symbol): Don't do anything
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special with non_got_ref for weak aliases.
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(elf32_hppa_check_relocs): Tweak setting of non_got_ref.
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(elf32_hppa_adjust_dynamic_symbol): When initialising weak aliases,
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don't uselessly copy non_got_ref. Clear dyn_relocs instead if
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strong symbol is allocated in dynbss. Tidy comments.
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(elf32_hppa_relocate_section): Comment fix.
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* elf32-ppc.c (ppc_elf_copy_indirect_symbol): Don't do anything
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special with non_got_ref for weak aliases.
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(ppc_elf_adjust_dynamic_symbol): When initialising weak aliases,
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don't uselessly copy non_got_ref. Clear dyn_relocs instead if
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strong symbol is allocated in dynbss. Tidy comments.
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* elf64-ppc.c (ppc64_elf_copy_indirect_symbol): Don't do anything
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special with non_got_ref for weak aliases.
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(ppc64_elf_adjust_dynamic_symbol): When initialising weak aliases,
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don't uselessly copy non_got_ref. Clear dyn_relocs instead if
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strong symbol is allocated in dynbss. Tidy comments.
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2017-11-29 Nick Clifton <nickc@redhat.com>
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PR 22509
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@ -1057,30 +1057,14 @@ elf32_hppa_copy_indirect_symbol (struct bfd_link_info *info,
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hh_ind->dyn_relocs = NULL;
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}
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if (ELIMINATE_COPY_RELOCS
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&& eh_ind->root.type != bfd_link_hash_indirect
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&& eh_dir->dynamic_adjusted)
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if (eh_ind->root.type == bfd_link_hash_indirect)
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{
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/* If called to transfer flags for a weakdef during processing
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of elf_adjust_dynamic_symbol, don't copy non_got_ref.
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We clear it ourselves for ELIMINATE_COPY_RELOCS. */
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if (eh_dir->versioned != versioned_hidden)
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eh_dir->ref_dynamic |= eh_ind->ref_dynamic;
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eh_dir->ref_regular |= eh_ind->ref_regular;
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eh_dir->ref_regular_nonweak |= eh_ind->ref_regular_nonweak;
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eh_dir->needs_plt |= eh_ind->needs_plt;
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hh_dir->plabel |= hh_ind->plabel;
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hh_dir->tls_type |= hh_ind->tls_type;
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hh_ind->tls_type = GOT_UNKNOWN;
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}
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else
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{
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if (eh_ind->root.type == bfd_link_hash_indirect)
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{
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hh_dir->plabel |= hh_ind->plabel;
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hh_dir->tls_type |= hh_ind->tls_type;
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hh_ind->tls_type = GOT_UNKNOWN;
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}
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_bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind);
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}
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_bfd_elf_link_hash_copy_indirect (info, eh_dir, eh_ind);
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}
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static int
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@ -1424,7 +1408,7 @@ elf32_hppa_check_relocs (bfd *abfd,
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/* Flag this symbol as having a non-got, non-plt reference
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so that we generate copy relocs if it turns out to be
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dynamic. */
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if (hh != NULL && !bfd_link_pic (info))
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if (hh != NULL)
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hh->eh.non_got_ref = 1;
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/* If we are creating a shared library then we need to copy
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@ -1748,6 +1732,10 @@ elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info,
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else
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eh->plt.offset = (bfd_vma) -1;
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htab = hppa_link_hash_table (info);
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if (htab == NULL)
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return FALSE;
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/* If this is a weak symbol, and there is a real definition, the
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processor independent code will have arranged for us to see the
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real definition first, and we can just use the same value. */
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@ -1757,8 +1745,9 @@ elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info,
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BFD_ASSERT (def->root.type == bfd_link_hash_defined);
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eh->root.u.def.section = def->root.u.def.section;
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eh->root.u.def.value = def->root.u.def.value;
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if (ELIMINATE_COPY_RELOCS)
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eh->non_got_ref = def->non_got_ref;
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if (def->root.u.def.section == htab->etab.sdynbss
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|| def->root.u.def.section == htab->etab.sdynrelro)
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hppa_elf_hash_entry (eh)->dyn_relocs = NULL;
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return TRUE;
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}
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@ -1798,14 +1787,6 @@ elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info,
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determine the address it must put in the global offset table, so
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both the dynamic object and the regular object will refer to the
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same memory location for the variable. */
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htab = hppa_link_hash_table (info);
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if (htab == NULL)
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return FALSE;
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/* We must generate a COPY reloc to tell the dynamic linker to
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copy the initial value out of the dynamic object and into the
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runtime process image. */
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if ((eh->root.u.def.section->flags & SEC_READONLY) != 0)
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{
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sec = htab->etab.sdynrelro;
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@ -1818,6 +1799,9 @@ elf32_hppa_adjust_dynamic_symbol (struct bfd_link_info *info,
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}
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if ((eh->root.u.def.section->flags & SEC_ALLOC) != 0 && eh->size != 0)
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{
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/* We must generate a COPY reloc to tell the dynamic linker to
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copy the initial value out of the dynamic object and into the
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runtime process image. */
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srel->size += sizeof (Elf32_External_Rela);
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eh->needs_copy = 1;
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}
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@ -3797,7 +3781,7 @@ elf32_hppa_relocate_section (bfd *output_bfd,
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bfd_link_pic (info),
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&hh->eh))
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{
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/* In a non-shared link, adjust_dynamic_symbols
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/* In a non-shared link, adjust_dynamic_symbol
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isn't called for symbols forced local. We
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need to write out the plt entry here. */
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if ((off & 1) != 0)
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@ -3579,18 +3579,11 @@ ppc_elf_copy_indirect_symbol (struct bfd_link_info *info,
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edir->tls_mask |= eind->tls_mask;
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edir->has_sda_refs |= eind->has_sda_refs;
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/* If called to transfer flags for a weakdef during processing
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of elf_adjust_dynamic_symbol, don't copy non_got_ref.
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We clear it ourselves for ELIMINATE_COPY_RELOCS. */
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if (!(ELIMINATE_COPY_RELOCS
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&& eind->elf.root.type != bfd_link_hash_indirect
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&& edir->elf.dynamic_adjusted))
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edir->elf.non_got_ref |= eind->elf.non_got_ref;
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if (edir->elf.versioned != versioned_hidden)
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edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
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edir->elf.ref_regular |= eind->elf.ref_regular;
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edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
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edir->elf.non_got_ref |= eind->elf.non_got_ref;
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edir->elf.needs_plt |= eind->elf.needs_plt;
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edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
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@ -5571,8 +5564,10 @@ ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
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BFD_ASSERT (def->root.type == bfd_link_hash_defined);
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h->root.u.def.section = def->root.u.def.section;
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h->root.u.def.value = def->root.u.def.value;
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if (ELIMINATE_COPY_RELOCS)
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h->non_got_ref = def->non_got_ref;
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if (def->root.u.def.section == htab->elf.sdynbss
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|| def->root.u.def.section == htab->elf.sdynrelro
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|| def->root.u.def.section == htab->dynsbss)
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ppc_elf_hash_entry (h)->dyn_relocs = NULL;
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return TRUE;
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}
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@ -5641,7 +5636,6 @@ ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
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Of course, if the symbol is referenced using SDAREL relocs, we
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must instead allocate it in .sbss. */
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if (ppc_elf_hash_entry (h)->has_sda_refs)
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s = htab->dynsbss;
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else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
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@ -5650,14 +5644,13 @@ ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
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s = htab->elf.sdynbss;
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BFD_ASSERT (s != NULL);
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/* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
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copy the initial value out of the dynamic object and into the
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runtime process image. We need to remember the offset into the
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.rela.bss section we are going to use. */
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if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
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{
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asection *srel;
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/* We must generate a R_PPC_COPY reloc to tell the dynamic
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linker to copy the initial value out of the dynamic object
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and into the runtime process image. */
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if (ppc_elf_hash_entry (h)->has_sda_refs)
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srel = htab->relsbss;
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else if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
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@ -4761,18 +4761,11 @@ ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info,
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if (eind->oh != NULL)
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edir->oh = ppc_follow_link (eind->oh);
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/* If called to transfer flags for a weakdef during processing
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of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
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We clear it ourselves for ELIMINATE_COPY_RELOCS. */
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if (!(ELIMINATE_COPY_RELOCS
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&& eind->elf.root.type != bfd_link_hash_indirect
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&& edir->elf.dynamic_adjusted))
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edir->elf.non_got_ref |= eind->elf.non_got_ref;
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if (edir->elf.versioned != versioned_hidden)
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edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
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edir->elf.ref_regular |= eind->elf.ref_regular;
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edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
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edir->elf.non_got_ref |= eind->elf.non_got_ref;
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edir->elf.needs_plt |= eind->elf.needs_plt;
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edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed;
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@ -7216,8 +7209,9 @@ ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
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BFD_ASSERT (def->root.type == bfd_link_hash_defined);
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h->root.u.def.section = def->root.u.def.section;
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h->root.u.def.value = def->root.u.def.value;
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if (ELIMINATE_COPY_RELOCS)
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h->non_got_ref = def->non_got_ref;
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if (def->root.u.def.section == htab->elf.sdynbss
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|| def->root.u.def.section == htab->elf.sdynrelro)
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((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL;
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return TRUE;
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}
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@ -7275,11 +7269,6 @@ ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
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determine the address it must put in the global offset table, so
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both the dynamic object and the regular object will refer to the
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same memory location for the variable. */
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/* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
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to copy the initial value out of the dynamic object and into the
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runtime process image. We need to remember the offset into the
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.rela.bss section we are going to use. */
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if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
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{
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s = htab->elf.sdynrelro;
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@ -7292,6 +7281,9 @@ ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
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}
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if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
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{
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/* We must generate a R_PPC64_COPY reloc to tell the dynamic
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linker to copy the initial value out of the dynamic object
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and into the runtime process image. */
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srel->size += sizeof (Elf64_External_Rela);
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h->needs_copy = 1;
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}
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