struct elf_info_failed
{
struct bfd_link_info *info;
- struct bfd_elf_version_tree *verdefs;
bfd_boolean failed;
};
return TRUE;
if (h->dynindx == -1
- && (h->def_regular
- || h->ref_regular))
+ && (h->def_regular || h->ref_regular)
+ && ! bfd_hide_sym_by_version (eif->info->version_info,
+ h->root.root.string))
{
- bfd_boolean hide;
-
- if (eif->verdefs == NULL
- || (bfd_find_version_for_sym (eif->verdefs, h->root.root.string, &hide)
- && !hide))
+ if (! bfd_elf_link_record_dynamic_symbol (eif->info, h))
{
- if (! bfd_elf_link_record_dynamic_symbol (eif->info, h))
- {
- eif->failed = TRUE;
- return FALSE;
- }
+ eif->failed = TRUE;
+ return FALSE;
}
}
}
/* Look for the version. If we find it, it is no longer weak. */
- for (t = sinfo->verdefs; t != NULL; t = t->next)
+ for (t = sinfo->info->version_info; t != NULL; t = t->next)
{
if (strcmp (t->name, p) == 0)
{
version_index = 1;
/* Don't count anonymous version tag. */
- if (sinfo->verdefs != NULL && sinfo->verdefs->vernum == 0)
+ if (sinfo->info->version_info != NULL
+ && sinfo->info->version_info->vernum == 0)
version_index = 0;
- for (pp = &sinfo->verdefs; *pp != NULL; pp = &(*pp)->next)
+ for (pp = &sinfo->info->version_info;
+ *pp != NULL;
+ pp = &(*pp)->next)
++version_index;
t->vernum = version_index;
/* If we don't have a version for this symbol, see if we can find
something. */
- if (h->verinfo.vertree == NULL && sinfo->verdefs != NULL)
+ if (h->verinfo.vertree == NULL && sinfo->info->version_info != NULL)
{
bfd_boolean hide;
- h->verinfo.vertree = bfd_find_version_for_sym (sinfo->verdefs,
- h->root.root.string, &hide);
+ h->verinfo.vertree
+ = bfd_find_version_for_sym (sinfo->info->version_info,
+ h->root.root.string, &hide);
if (h->verinfo.vertree != NULL && hide)
(*bed->elf_backend_hide_symbol) (info, h, TRUE);
}
const char *depaudit,
const char * const *auxiliary_filters,
struct bfd_link_info *info,
- asection **sinterpptr,
- struct bfd_elf_version_tree *verdefs)
+ asection **sinterpptr)
{
bfd_size_type soname_indx;
bfd *dynobj;
}
eif.info = info;
- eif.verdefs = verdefs;
eif.failed = FALSE;
/* If we are supposed to export all symbols into the dynamic symbol
}
/* Make all global versions with definition. */
- for (t = verdefs; t != NULL; t = t->next)
+ for (t = info->version_info; t != NULL; t = t->next)
for (d = t->globals.list; d != NULL; d = d->next)
if (!d->symver && d->literal)
{
/* Attach all the symbols to their version information. */
asvinfo.info = info;
- asvinfo.verdefs = verdefs;
asvinfo.failed = FALSE;
elf_link_hash_traverse (elf_hash_table (info),
{
/* Check if all global versions have a definition. */
all_defined = TRUE;
- for (t = verdefs; t != NULL; t = t->next)
+ for (t = info->version_info; t != NULL; t = t->next)
for (d = t->globals.list; d != NULL; d = d->next)
if (d->literal && !d->symver && !d->script)
{
if (elf_hash_table (info)->dynamic_sections_created)
{
unsigned long section_sym_count;
+ struct bfd_elf_version_tree *verdefs;
asection *s;
/* Set up the version definition section. */
/* We may have created additional version definitions if we are
just linking a regular application. */
- verdefs = asvinfo.verdefs;
+ verdefs = info->version_info;
/* Skip anonymous version tag. */
if (verdefs != NULL && verdefs->vernum == 0)
static bfd_boolean
elf_gc_sweep_symbol (struct elf_link_hash_entry *h, void *data)
{
- if ((h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- && !h->root.u.def.section->gc_mark
- && !(h->root.u.def.section->owner->flags & DYNAMIC))
+ if (((h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && !h->root.u.def.section->gc_mark
+ && (!(h->root.u.def.section->owner->flags & DYNAMIC)
+ || (h->plt.refcount <= 0
+ && h->got.refcount <= 0)))
+ || (h->root.type == bfd_link_hash_undefined
+ && h->plt.refcount <= 0
+ && h->got.refcount <= 0))
{
struct elf_gc_sweep_symbol_info *inf =
- (struct elf_gc_sweep_symbol_info *) data;
+ (struct elf_gc_sweep_symbol_info *) data;
(*inf->hide_symbol) (inf->info, h, TRUE);
}
|| (!info->executable
&& h->def_regular
&& ELF_ST_VISIBILITY (h->other) != STV_INTERNAL
- && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN)))
+ && ELF_ST_VISIBILITY (h->other) != STV_HIDDEN
+ && !bfd_hide_sym_by_version (info->version_info,
+ h->root.root.string))))
h->root.u.def.section->flags |= SEC_KEEP;
return TRUE;
return ret;
}
-/* For a SHT_GROUP section, return the group signature. For other
- sections, return the normal section name. */
-
-static const char *
-section_signature (asection *sec)
-{
- if ((sec->flags & SEC_GROUP) != 0
- && elf_next_in_group (sec) != NULL
- && elf_group_name (elf_next_in_group (sec)) != NULL)
- return elf_group_name (elf_next_in_group (sec));
- return sec->name;
-}
-
bfd_boolean
_bfd_elf_section_already_linked (bfd *abfd,
- struct already_linked *linked,
+ asection *sec,
struct bfd_link_info *info)
{
flagword flags;
- const char *name, *p;
+ const char *name, *key;
struct bfd_section_already_linked *l;
struct bfd_section_already_linked_hash_entry *already_linked_list;
- asection *sec, *l_sec;
- bfd_boolean matched;
-
- p = name = linked->comdat_key;
- if (name)
- {
- sec = NULL;
- flags = SEC_GROUP | SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
- }
- else
- {
- sec = linked->u.sec;
- if (sec->output_section == bfd_abs_section_ptr)
- return FALSE;
-
- flags = sec->flags;
-
- /* Return if it isn't a linkonce section. A comdat group section
- also has SEC_LINK_ONCE set. */
- if ((flags & SEC_LINK_ONCE) == 0)
- return FALSE;
-
- /* Don't put group member sections on our list of already linked
- sections. They are handled as a group via their group section.
- */
- if (elf_sec_group (sec) != NULL)
- return FALSE;
- /* FIXME: When doing a relocatable link, we may have trouble
- copying relocations in other sections that refer to local symbols
- in the section being discarded. Those relocations will have to
- be converted somehow; as of this writing I'm not sure that any of
- the backends handle that correctly.
+ if (sec->output_section == bfd_abs_section_ptr)
+ return FALSE;
- It is tempting to instead not discard link once sections when
- doing a relocatable link (technically, they should be discarded
- whenever we are building constructors). However, that fails,
- because the linker winds up combining all the link once sections
- into a single large link once section, which defeats the purpose
- of having link once sections in the first place.
+ flags = sec->flags;
- Also, not merging link once sections in a relocatable link
- causes trouble for MIPS ELF, which relies on link once semantics
- to handle the .reginfo section correctly. */
+ /* Return if it isn't a linkonce section. A comdat group section
+ also has SEC_LINK_ONCE set. */
+ if ((flags & SEC_LINK_ONCE) == 0)
+ return FALSE;
- name = section_signature (sec);
+ /* Don't put group member sections on our list of already linked
+ sections. They are handled as a group via their group section. */
+ if (elf_sec_group (sec) != NULL)
+ return FALSE;
+ /* For a SHT_GROUP section, use the group signature as the key. */
+ name = sec->name;
+ if ((flags & SEC_GROUP) != 0
+ && elf_next_in_group (sec) != NULL
+ && elf_group_name (elf_next_in_group (sec)) != NULL)
+ key = elf_group_name (elf_next_in_group (sec));
+ else
+ {
+ /* Otherwise we should have a .gnu.linkonce.<type>.<key> section. */
if (CONST_STRNEQ (name, ".gnu.linkonce.")
- && ((p = strchr (name + sizeof (".gnu.linkonce.") - 1, '.'))
- != NULL))
- p++;
+ && (key = strchr (name + sizeof (".gnu.linkonce.") - 1, '.')) != NULL)
+ key++;
else
- p = name;
+ /* Must be a user linkonce section that doesn't follow gcc's
+ naming convention. In this case we won't be matching
+ single member groups. */
+ key = name;
}
- already_linked_list = bfd_section_already_linked_table_lookup (p);
+ already_linked_list = bfd_section_already_linked_table_lookup (key);
for (l = already_linked_list->entry; l != NULL; l = l->next)
{
- flagword l_flags;
- bfd *l_owner;
- const char *l_name = l->linked.comdat_key;
- if (l_name)
- {
- l_sec = NULL;
- l_owner = l->linked.u.abfd;
- l_flags = (SEC_GROUP
- | SEC_LINK_ONCE
- | SEC_LINK_DUPLICATES_DISCARD);
- }
- else
- {
- l_sec = l->linked.u.sec;
- l_owner = l_sec->owner;
- l_flags = l_sec->flags;
- l_name = section_signature (l_sec);
- }
-
/* We may have 2 different types of sections on the list: group
- sections and linkonce sections. Match like sections. */
- if ((flags & SEC_GROUP) == (l_flags & SEC_GROUP)
- && strcmp (name, l_name) == 0)
+ sections with a signature of <key> (<key> is some string),
+ and linkonce sections named .gnu.linkonce.<type>.<key>.
+ Match like sections. LTO plugin sections are an exception.
+ They are always named .gnu.linkonce.t.<key> and match either
+ type of section. */
+ if (((flags & SEC_GROUP) == (l->sec->flags & SEC_GROUP)
+ && ((flags & SEC_GROUP) != 0
+ || strcmp (name, l->sec->name) == 0))
+ || (l->sec->owner->flags & BFD_PLUGIN) != 0)
{
/* The section has already been linked. See if we should
issue a warning. */
- switch (flags & SEC_LINK_DUPLICATES)
- {
- default:
- abort ();
-
- case SEC_LINK_DUPLICATES_DISCARD:
- /* If we found an LTO IR match for this comdat group on
- the first pass, replace it with the LTO output on the
- second pass. We can't simply choose real object
- files over IR because the first pass may contain a
- mix of LTO and normal objects and we must keep the
- first match, be it IR or real. */
- if (info->loading_lto_outputs
- && (l_owner->flags & BFD_PLUGIN) != 0)
- {
- l->linked = *linked;
- return FALSE;
- }
- break;
-
- case SEC_LINK_DUPLICATES_ONE_ONLY:
- (*_bfd_error_handler)
- (_("%B: ignoring duplicate section `%A'"),
- abfd, sec);
- break;
-
- case SEC_LINK_DUPLICATES_SAME_SIZE:
- if (!sec || !l_sec)
- abort ();
-
- if (sec->size != l_sec->size)
- (*_bfd_error_handler)
- (_("%B: duplicate section `%A' has different size"),
- abfd, sec);
- break;
-
- case SEC_LINK_DUPLICATES_SAME_CONTENTS:
- if (!sec || !l_sec)
- abort ();
-
- if (sec->size != l_sec->size)
- (*_bfd_error_handler)
- (_("%B: duplicate section `%A' has different size"),
- abfd, sec);
- else if (sec->size != 0)
- {
- bfd_byte *sec_contents, *l_sec_contents;
-
- if (!bfd_malloc_and_get_section (abfd, sec, &sec_contents))
- (*_bfd_error_handler)
- (_("%B: warning: could not read contents of section `%A'"),
- abfd, sec);
- else if (!bfd_malloc_and_get_section (l_sec->owner, l_sec,
- &l_sec_contents))
- (*_bfd_error_handler)
- (_("%B: warning: could not read contents of section `%A'"),
- l_sec->owner, l_sec);
- else if (memcmp (sec_contents, l_sec_contents, sec->size) != 0)
- (*_bfd_error_handler)
- (_("%B: warning: duplicate section `%A' has different contents"),
- abfd, sec);
-
- if (sec_contents)
- free (sec_contents);
- if (l_sec_contents)
- free (l_sec_contents);
- }
- break;
- }
+ if (!_bfd_handle_already_linked (sec, l, info))
+ return FALSE;
- if (sec)
+ if (flags & SEC_GROUP)
{
- /* Set the output_section field so that lang_add_section
- does not create a lang_input_section structure for this
- section. Since there might be a symbol in the section
- being discarded, we must retain a pointer to the section
- which we are really going to use. */
- sec->output_section = bfd_abs_section_ptr;
- sec->kept_section = l_sec;
+ asection *first = elf_next_in_group (sec);
+ asection *s = first;
- if (flags & SEC_GROUP)
+ while (s != NULL)
{
- asection *first = elf_next_in_group (sec);
- asection *s = first;
-
- while (s != NULL)
- {
- s->output_section = bfd_abs_section_ptr;
- /* Record which group discards it. */
- s->kept_section = l_sec;
- s = elf_next_in_group (s);
- /* These lists are circular. */
- if (s == first)
- break;
- }
+ s->output_section = bfd_abs_section_ptr;
+ /* Record which group discards it. */
+ s->kept_section = l->sec;
+ s = elf_next_in_group (s);
+ /* These lists are circular. */
+ if (s == first)
+ break;
}
}
}
}
- matched = FALSE;
- if (sec)
+ /* A single member comdat group section may be discarded by a
+ linkonce section and vice versa. */
+ if ((flags & SEC_GROUP) != 0)
{
- /* A single member comdat group section may be discarded by a
- linkonce section and vice versa. */
+ asection *first = elf_next_in_group (sec);
- if ((flags & SEC_GROUP) != 0)
+ if (first != NULL && elf_next_in_group (first) == first)
+ /* Check this single member group against linkonce sections. */
+ for (l = already_linked_list->entry; l != NULL; l = l->next)
+ if ((l->sec->flags & SEC_GROUP) == 0
+ && bfd_elf_match_symbols_in_sections (l->sec, first, info))
+ {
+ first->output_section = bfd_abs_section_ptr;
+ first->kept_section = l->sec;
+ sec->output_section = bfd_abs_section_ptr;
+ break;
+ }
+ }
+ else
+ /* Check this linkonce section against single member groups. */
+ for (l = already_linked_list->entry; l != NULL; l = l->next)
+ if (l->sec->flags & SEC_GROUP)
{
- asection *first = elf_next_in_group (sec);
+ asection *first = elf_next_in_group (l->sec);
- if (first != NULL && elf_next_in_group (first) == first)
- /* Check this single member group against linkonce sections. */
- for (l = already_linked_list->entry; l != NULL; l = l->next)
- {
- if (l->linked.comdat_key == NULL)
- {
- l_sec = l->linked.u.sec;
-
- if ((l_sec->flags & SEC_GROUP) == 0
- && bfd_coff_get_comdat_section (l_sec->owner,
- l_sec) == NULL
- && bfd_elf_match_symbols_in_sections (l_sec,
- first,
- info))
- {
- first->output_section = bfd_abs_section_ptr;
- first->kept_section = l_sec;
- sec->output_section = bfd_abs_section_ptr;
- matched = TRUE;
- break;
- }
- }
- }
+ if (first != NULL
+ && elf_next_in_group (first) == first
+ && bfd_elf_match_symbols_in_sections (first, sec, info))
+ {
+ sec->output_section = bfd_abs_section_ptr;
+ sec->kept_section = first;
+ break;
+ }
}
- else
- /* Check this linkonce section against single member groups. */
- for (l = already_linked_list->entry; l != NULL; l = l->next)
- {
- if (l->linked.comdat_key == NULL)
- {
- l_sec = l->linked.u.sec;
-
- if (l_sec->flags & SEC_GROUP)
- {
- asection *first = elf_next_in_group (l_sec);
-
- if (first != NULL
- && elf_next_in_group (first) == first
- && bfd_elf_match_symbols_in_sections (first,
- sec,
- info))
- {
- sec->output_section = bfd_abs_section_ptr;
- sec->kept_section = first;
- matched = TRUE;
- break;
- }
- }
- }
- }
-
- /* Do not complain on unresolved relocations in `.gnu.linkonce.r.F'
- referencing its discarded `.gnu.linkonce.t.F' counterpart -
- g++-3.4 specific as g++-4.x is using COMDAT groups (without the
- `.gnu.linkonce' prefix) instead. `.gnu.linkonce.r.*' were the
- `.rodata' part of its matching `.gnu.linkonce.t.*'. If
- `.gnu.linkonce.r.F' is not discarded but its `.gnu.linkonce.t.F'
- is discarded means we chose one-only `.gnu.linkonce.t.F' section
- from a different bfd not requiring any `.gnu.linkonce.r.F'.
- Thus `.gnu.linkonce.r.F' should be discarded. The reverse order
- cannot happen as there is never a bfd with only the
- `.gnu.linkonce.r.F' section. The order of sections in a bfd
- does not matter as here were are looking only for cross-bfd
- sections. */
-
- if ((flags & SEC_GROUP) == 0
- && CONST_STRNEQ (name, ".gnu.linkonce.r."))
- for (l = already_linked_list->entry; l != NULL; l = l->next)
- {
- if (l->linked.comdat_key == NULL)
- {
- l_sec = l->linked.u.sec;
- if ((l_sec->flags & SEC_GROUP) == 0
- && CONST_STRNEQ (l_sec->name, ".gnu.linkonce.t."))
- {
- if (abfd != l_sec->owner)
- {
- sec->output_section = bfd_abs_section_ptr;
- matched = TRUE;
- }
- break;
- }
- }
- }
- }
+ /* Do not complain on unresolved relocations in `.gnu.linkonce.r.F'
+ referencing its discarded `.gnu.linkonce.t.F' counterpart - g++-3.4
+ specific as g++-4.x is using COMDAT groups (without the `.gnu.linkonce'
+ prefix) instead. `.gnu.linkonce.r.*' were the `.rodata' part of its
+ matching `.gnu.linkonce.t.*'. If `.gnu.linkonce.r.F' is not discarded
+ but its `.gnu.linkonce.t.F' is discarded means we chose one-only
+ `.gnu.linkonce.t.F' section from a different bfd not requiring any
+ `.gnu.linkonce.r.F'. Thus `.gnu.linkonce.r.F' should be discarded.
+ The reverse order cannot happen as there is never a bfd with only the
+ `.gnu.linkonce.r.F' section. The order of sections in a bfd does not
+ matter as here were are looking only for cross-bfd sections. */
+
+ if ((flags & SEC_GROUP) == 0 && CONST_STRNEQ (name, ".gnu.linkonce.r."))
+ for (l = already_linked_list->entry; l != NULL; l = l->next)
+ if ((l->sec->flags & SEC_GROUP) == 0
+ && CONST_STRNEQ (l->sec->name, ".gnu.linkonce.t."))
+ {
+ if (abfd != l->sec->owner)
+ sec->output_section = bfd_abs_section_ptr;
+ break;
+ }
/* This is the first section with this name. Record it. */
- if (! bfd_section_already_linked_table_insert (already_linked_list,
- linked))
+ if (!bfd_section_already_linked_table_insert (already_linked_list, sec))
info->callbacks->einfo (_("%F%P: already_linked_table: %E\n"));
- return matched;
+ return sec->output_section == bfd_abs_section_ptr;
}
bfd_boolean
projects / deliverable / binutils-gdb.git / blobdiff