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-rw-r--r--binutils-2.24/bfd/elf-s390-common.c243
1 files changed, 0 insertions, 243 deletions
diff --git a/binutils-2.24/bfd/elf-s390-common.c b/binutils-2.24/bfd/elf-s390-common.c
deleted file mode 100644
index 691f7511..00000000
--- a/binutils-2.24/bfd/elf-s390-common.c
+++ /dev/null
@@ -1,243 +0,0 @@
-/* IBM S/390-specific support for ELF 32 and 64 bit functions
- Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
- 2011, 2012 Free Software Foundation, Inc.
- Contributed by Andreas Krebbel.
-
- This file is part of BFD, the Binary File Descriptor library.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
- 02110-1301, USA. */
-
-
-/* Return TRUE if H is an IFUNC symbol. Simply checking for the
- symbol type might not be enough since it might get changed to
- STT_FUNC for pointer equality reasons. */
-static inline bfd_boolean
-s390_is_ifunc_symbol_p (struct elf_link_hash_entry *h)
-{
- struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
- return h->type == STT_GNU_IFUNC || eh->ifunc_resolver_address != 0;
-}
-
-/* Create sections needed by STT_GNU_IFUNC symbol. */
-
-static bfd_boolean
-s390_elf_create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
-{
- flagword flags;
- asection *s;
- const struct elf_backend_data *bed = get_elf_backend_data (abfd);
- struct elf_link_hash_table *htab = elf_hash_table (info);
-
- if (htab->iplt != NULL)
- return TRUE;
-
- flags = bed->dynamic_sec_flags;
-
- if (info->shared)
- {
- s = bfd_make_section_with_flags (abfd, ".rela.ifunc",
- flags | SEC_READONLY);
- if (s == NULL
- || ! bfd_set_section_alignment (abfd, s,
- bed->s->log_file_align))
- return FALSE;
- htab->irelifunc = s;
- }
-
- /* Create .iplt, .rel[a].iplt, and .igot.plt. */
- s = bfd_make_section_with_flags (abfd, ".iplt",
- flags | SEC_CODE | SEC_READONLY);
- if (s == NULL
- || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
- return FALSE;
- htab->iplt = s;
-
- s = bfd_make_section_with_flags (abfd, ".rela.iplt", flags | SEC_READONLY);
- if (s == NULL
- || ! bfd_set_section_alignment (abfd, s,
- bed->s->log_file_align))
- return FALSE;
- htab->irelplt = s;
-
- s = bfd_make_section_with_flags (abfd, ".igot.plt", flags);
- if (s == NULL
- || !bfd_set_section_alignment (abfd, s,
- bed->s->log_file_align))
- return FALSE;
- htab->igotplt = s;
-
- return TRUE;
-}
-
-
-/* Allocate space in .plt, .got and associated reloc sections for
- dynamic relocs against a STT_GNU_IFUNC symbol definition. */
-
-static bfd_boolean
-s390_elf_allocate_ifunc_dyn_relocs (struct bfd_link_info *info,
- struct elf_link_hash_entry *h,
- struct elf_dyn_relocs **head)
-{
- struct elf_dyn_relocs *p;
- struct elf_link_hash_table *htab;
- struct elf_s390_link_hash_entry *eh = (struct elf_s390_link_hash_entry*)h;
-
- htab = elf_hash_table (info);
- eh->ifunc_resolver_address = h->root.u.def.value;
- eh->ifunc_resolver_section = h->root.u.def.section;
-
- /* Support garbage collection against STT_GNU_IFUNC symbols. */
- if (h->plt.refcount <= 0 && h->got.refcount <= 0)
- {
- /* When building shared library, we need to handle the case
- where it is marked with regular reference, but not non-GOT
- reference. It may happen if we didn't see STT_GNU_IFUNC
- symbol at the time when checking relocations. */
- if (info->shared
- && !h->non_got_ref
- && h->ref_regular)
- for (p = *head; p != NULL; p = p->next)
- if (p->count)
- {
- h->non_got_ref = 1;
- goto keep;
- }
-
- h->got = htab->init_got_offset;
- h->plt = htab->init_plt_offset;
- *head = NULL;
- return TRUE;
- }
-
- /* Return and discard space for dynamic relocations against it if
- it is never referenced in a non-shared object. */
- if (!h->ref_regular)
- {
- if (h->plt.refcount > 0
- || h->got.refcount > 0)
- abort ();
- h->got = htab->init_got_offset;
- h->plt = htab->init_plt_offset;
- *head = NULL;
- return TRUE;
- }
-
-keep:
- /* Without checking h->plt.refcount here we allocate a PLT slot.
- When setting plt.refcount in check_relocs it might not have been
- known that this will be an IFUNC symol. */
- h->plt.offset = htab->iplt->size;
- h->needs_plt = 1;
- htab->iplt->size += PLT_ENTRY_SIZE;
- htab->igotplt->size += GOT_ENTRY_SIZE;
- htab->irelplt->size += RELA_ENTRY_SIZE;
- htab->irelplt->reloc_count++;
-
- /* In order to make pointer equality work with IFUNC symbols defined
- in a non-PIE executable and referenced in a shared lib, we turn
- the symbol into a STT_FUNC symbol and make the symbol value to
- point to the IPLT slot. That way the referencing shared lib will
- always get the PLT slot address when resolving the respective
- R_390_GLOB_DAT/R_390_64 relocs on that symbol. */
- if (info->executable && !info->shared && h->def_regular && h->ref_dynamic)
- {
- h->root.u.def.section = htab->iplt;
- h->root.u.def.value = h->plt.offset;
- h->size = PLT_ENTRY_SIZE;
- h->type = STT_FUNC;
- }
-
- /* We need dynamic relocation for STT_GNU_IFUNC symbol only when
- there is a non-GOT reference in a shared object. */
- if (!info->shared || !h->non_got_ref)
- *head = NULL;
-
- /* Finally, allocate space. */
- p = *head;
- if (p != NULL)
- {
- bfd_size_type count = 0;
- do
- {
- count += p->count;
- p = p->next;
- }
- while (p != NULL);
- htab->irelifunc->size += count * RELA_ENTRY_SIZE;
- }
-
- /* Decide whether the got.iplt slot can be used. This has to be
- avoided if the values in the GOT slots could differ for pointer
- equality reasons. */
- if (h->got.refcount <= 0
- || (info->shared
- && (h->dynindx == -1 || h->forced_local))
- || (info->executable && info->shared)
- || htab->sgot == NULL)
- {
- /* Use .got.iplt. */
- h->got.offset = (bfd_vma) -1;
- }
- else
- {
- h->got.offset = htab->sgot->size;
- htab->sgot->size += GOT_ENTRY_SIZE;
- if (info->shared)
- htab->srelgot->size += RELA_ENTRY_SIZE;
- }
-
- return TRUE;
-}
-
-static bfd_boolean
-elf_s390_allocate_local_syminfo (bfd *abfd, Elf_Internal_Shdr *symtab_hdr)
-{
- bfd_size_type size;
-
- size = symtab_hdr->sh_info;
- size *= (sizeof (bfd_signed_vma) /* local got */
- + sizeof (struct plt_entry) /* local plt */
- + sizeof(char)); /* local tls type */
- elf_local_got_refcounts (abfd) = ((bfd_signed_vma *)
- bfd_zalloc (abfd, size));
- if (elf_local_got_refcounts (abfd) == NULL)
- return FALSE;
- elf_s390_local_plt (abfd)
- = (struct plt_entry*)(elf_local_got_refcounts (abfd)
- + symtab_hdr->sh_info);
- elf_s390_local_got_tls_type (abfd)
- = (char *) (elf_s390_local_plt (abfd) + symtab_hdr->sh_info);
-
- return TRUE;
-}
-
-/* Pick ELFOSABI_GNU if IFUNC symbols are used. */
-
-static bfd_boolean
-elf_s390_add_symbol_hook (bfd *abfd,
- struct bfd_link_info *info,
- Elf_Internal_Sym *sym,
- const char **namep ATTRIBUTE_UNUSED,
- flagword *flagsp ATTRIBUTE_UNUSED,
- asection **secp ATTRIBUTE_UNUSED,
- bfd_vma *valp ATTRIBUTE_UNUSED)
-{
- if ((abfd->flags & DYNAMIC) == 0
- && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
- elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
-
- return TRUE;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 13:23:53 +0000