return TRUE;
}
\f
-static struct bfd_elf_version_tree *
-find_version_for_sym (struct bfd_elf_version_tree *verdefs,
- const char *sym_name,
- bfd_boolean *hide)
-{
- struct bfd_elf_version_tree *t;
- struct bfd_elf_version_tree *local_ver, *global_ver, *exist_ver;
-
- local_ver = NULL;
- global_ver = NULL;
- exist_ver = NULL;
- for (t = verdefs; t != NULL; t = t->next)
- {
- if (t->globals.list != NULL)
- {
- struct bfd_elf_version_expr *d = NULL;
-
- while ((d = (*t->match) (&t->globals, d, sym_name)) != NULL)
- {
- global_ver = t;
- if (d->symver)
- exist_ver = t;
- d->script = 1;
- /* If the match is a wildcard pattern, keep looking for
- a more explicit, perhaps even local, match. */
- if (d->literal)
- break;
- }
-
- if (d != NULL)
- break;
- }
-
- if (t->locals.list != NULL)
- {
- struct bfd_elf_version_expr *d = NULL;
-
- while ((d = (*t->match) (&t->locals, d, sym_name)) != NULL)
- {
- local_ver = t;
- /* If the match is a wildcard pattern, keep looking for
- a more explicit, perhaps even global, match. */
- if (d->literal)
- {
- /* An exact match overrides a global wildcard. */
- global_ver = NULL;
- break;
- }
- }
-
- if (d != NULL)
- break;
- }
- }
-
- if (global_ver != NULL)
- {
- /* If we already have a versioned symbol that matches the
- node for this symbol, then we don't want to create a
- duplicate from the unversioned symbol. Instead hide the
- unversioned symbol. */
- *hide = exist_ver == global_ver;
- return global_ver;
- }
-
- if (local_ver != NULL)
- {
- *hide = TRUE;
- return local_ver;
- }
-
- return NULL;
-}
-
/* This routine is used to export all defined symbols into the dynamic
symbol table. It is called via elf_link_hash_traverse. */
bfd_boolean hide;
if (eif->verdefs == NULL
- || (find_version_for_sym (eif->verdefs, h->root.root.string, &hide)
+ || (bfd_find_version_for_sym (eif->verdefs, h->root.root.string, &hide)
&& !hide))
{
if (! bfd_elf_link_record_dynamic_symbol (eif->info, h))
{
bfd_boolean hide;
- h->verinfo.vertree = find_version_for_sym (sinfo->verdefs,
+ h->verinfo.vertree = bfd_find_version_for_sym (sinfo->verdefs,
h->root.root.string, &hide);
if (h->verinfo.vertree != NULL && hide)
(*bed->elf_backend_hide_symbol) (info, h, TRUE);
dynobj = elf_hash_table (eif->info)->dynobj;
bed = get_elf_backend_data (dynobj);
+
+ if (h->type == STT_GNU_IFUNC
+ && (bed->elf_osabi == ELFOSABI_LINUX
+ /* GNU/Linux is still using the default value 0. */
+ || bed->elf_osabi == ELFOSABI_NONE))
+ h->needs_plt = 1;
+
if (! (*bed->elf_backend_adjust_dynamic_symbol) (eif->info, h))
{
eif->failed = TRUE;
/* Add a symbol to the output symbol table. */
-static bfd_boolean
+static int
elf_link_output_sym (struct elf_final_link_info *finfo,
const char *name,
Elf_Internal_Sym *elfsym,
{
bfd_byte *dest;
Elf_External_Sym_Shndx *destshndx;
- bfd_boolean (*output_symbol_hook)
+ int (*output_symbol_hook)
(struct bfd_link_info *, const char *, Elf_Internal_Sym *, asection *,
struct elf_link_hash_entry *);
const struct elf_backend_data *bed;
output_symbol_hook = bed->elf_backend_link_output_symbol_hook;
if (output_symbol_hook != NULL)
{
- if (! (*output_symbol_hook) (finfo->info, name, elfsym, input_sec, h))
- return FALSE;
+ int ret = (*output_symbol_hook) (finfo->info, name, elfsym, input_sec, h);
+ if (ret != 1)
+ return ret;
}
if (name == NULL || *name == '\0')
elfsym->st_name = (unsigned long) _bfd_stringtab_add (finfo->symstrtab,
name, TRUE, FALSE);
if (elfsym->st_name == (unsigned long) -1)
- return FALSE;
+ return 0;
}
if (finfo->symbuf_count >= finfo->symbuf_size)
{
if (! elf_link_flush_output_syms (finfo, bed))
- return FALSE;
+ return 0;
}
dest = finfo->symbuf + finfo->symbuf_count * bed->s->sizeof_sym;
amt = finfo->shndxbuf_size * sizeof (Elf_External_Sym_Shndx);
destshndx = bfd_realloc (destshndx, amt * 2);
if (destshndx == NULL)
- return FALSE;
+ return 0;
finfo->symshndxbuf = destshndx;
memset ((char *) destshndx + amt, 0, amt);
finfo->shndxbuf_size *= 2;
finfo->symbuf_count += 1;
bfd_get_symcount (finfo->output_bfd) += 1;
- return TRUE;
+ return 1;
}
/* Return TRUE if the dynamic symbol SYM in ABFD is supported. */
Elf_Internal_Sym sym;
asection *input_sec;
const struct elf_backend_data *bed;
+ long indx;
+ int ret;
if (h->root.type == bfd_link_hash_warning)
{
if (strip || (input_sec->flags & SEC_EXCLUDE) != 0)
return TRUE;
- h->indx = bfd_get_symcount (finfo->output_bfd);
-
- if (! elf_link_output_sym (finfo, h->root.root.string, &sym, input_sec, h))
+ indx = bfd_get_symcount (finfo->output_bfd);
+ ret = elf_link_output_sym (finfo, h->root.root.string, &sym, input_sec, h);
+ if (ret == 0)
{
eoinfo->failed = TRUE;
return FALSE;
}
+ else if (ret == 1)
+ h->indx = indx;
+ else if (h->indx == -2)
+ abort();
return TRUE;
}
asection *isec;
const char *name;
Elf_Internal_Sym osym;
+ long indx;
+ int ret;
*pindex = -1;
&& bfd_is_local_label_name (input_bfd, name)))
continue;
- /* If we get here, we are going to output this symbol. */
-
osym = *isym;
/* Adjust the section index for the output file. */
}
}
- if (! elf_link_output_sym (finfo, name, &osym, isec, NULL))
+ indx = bfd_get_symcount (output_bfd);
+ ret = elf_link_output_sym (finfo, name, &osym, isec, NULL);
+ if (ret == 0)
return FALSE;
+ else if (ret == 1)
+ *pindex = indx;
}
/* Relocate the contents of each section. */
Elf_Internal_Sym sym = isymbuf[symndx];
asection *sec = finfo->sections[symndx]->output_section;
const char *name;
+ long indx;
+ int ret;
name = bfd_elf_string_from_elf_section (input_bfd,
symtab_hdr->sh_link,
sym.st_value += o->output_offset;
- finfo->indices[symndx] = bfd_get_symcount (output_bfd);
- if (! elf_link_output_sym (finfo, name, &sym, o, NULL))
+ indx = bfd_get_symcount (output_bfd);
+ ret = elf_link_output_sym (finfo, name, &sym, o, NULL);
+ if (ret == 0)
return FALSE;
+ else if (ret == 1)
+ finfo->indices[symndx] = indx;
+ else
+ abort ();
}
elf_section_data (osec)->this_hdr.sh_info
= finfo->indices[symndx];
unsigned long shlink;
const char *name;
asection *osec;
+ long indx;
if (finfo->info->strip == strip_all)
{
}
}
- finfo->indices[r_symndx]
- = bfd_get_symcount (output_bfd);
-
- if (! elf_link_output_sym (finfo, name, &sym, sec,
- NULL))
+ indx = bfd_get_symcount (output_bfd);
+ ret = elf_link_output_sym (finfo, name, &sym, sec,
+ NULL);
+ if (ret == 0)
return FALSE;
+ else if (ret == 1)
+ finfo->indices[r_symndx] = indx;
+ else
+ abort ();
}
r_symndx = finfo->indices[r_symndx];
elfsym.st_info = 0;
elfsym.st_other = 0;
elfsym.st_shndx = SHN_UNDEF;
- if (! elf_link_output_sym (&finfo, NULL, &elfsym, bfd_und_section_ptr,
- NULL))
+ if (elf_link_output_sym (&finfo, NULL, &elfsym, bfd_und_section_ptr,
+ NULL) != 1)
goto error_return;
}
elfsym.st_shndx = i;
if (!info->relocatable)
elfsym.st_value = o->vma;
- if (!elf_link_output_sym (&finfo, NULL, &elfsym, o, NULL))
+ if (elf_link_output_sym (&finfo, NULL, &elfsym, o, NULL) != 1)
goto error_return;
}
}
table, do it now. */
if (bed->elf_backend_output_arch_local_syms)
{
- typedef bfd_boolean (*out_sym_func)
+ typedef int (*out_sym_func)
(void *, const char *, Elf_Internal_Sym *, asection *,
struct elf_link_hash_entry *);
table, do it now. */
if (bed->elf_backend_output_arch_syms)
{
- typedef bfd_boolean (*out_sym_func)
+ typedef int (*out_sym_func)
(void *, const char *, Elf_Internal_Sym *, asection *,
struct elf_link_hash_entry *);
return reloc_sec;
}
+
+/* Returns the name of the ifunc using dynamic reloc section associated with SEC. */
+#define IFUNC_INFIX ".ifunc"
+
+static const char *
+get_ifunc_reloc_section_name (bfd * abfd,
+ asection * sec)
+{
+ const char * dot;
+ char * name;
+ const char * base_name;
+ unsigned int strndx = elf_elfheader (abfd)->e_shstrndx;
+ unsigned int shnam = elf_section_data (sec)->rel_hdr.sh_name;
+
+ base_name = bfd_elf_string_from_elf_section (abfd, strndx, shnam);
+ if (base_name == NULL)
+ return NULL;
+
+ dot = strchr (base_name + 1, '.');
+ name = bfd_alloc (abfd, strlen (base_name) + strlen (IFUNC_INFIX) + 1);
+ sprintf (name, "%.*s%s%s", (int)(dot - base_name), base_name, IFUNC_INFIX, dot);
+
+ return name;
+}
+
+/* Like _bfd_elf_make_dynamic_reloc_section but it creates a
+ section for holding relocs against symbols with the STT_GNU_IFUNC
+ type. The section is attached to the OWNER bfd but it is created
+ with a name based on SEC from ABFD. */
+
+asection *
+_bfd_elf_make_ifunc_reloc_section (bfd * abfd,
+ asection * sec,
+ bfd * owner,
+ unsigned int align)
+{
+ asection * reloc_sec = elf_section_data (sec)->indirect_relocs;
+
+ if (reloc_sec == NULL)
+ {
+ const char * name = get_ifunc_reloc_section_name (abfd, sec);
+
+ if (name == NULL)
+ return NULL;
+
+ reloc_sec = bfd_get_section_by_name (owner, name);
+
+ if (reloc_sec == NULL)
+ {
+ flagword flags;
+
+ flags = (SEC_HAS_CONTENTS | SEC_READONLY | SEC_IN_MEMORY | SEC_LINKER_CREATED);
+ if ((sec->flags & SEC_ALLOC) != 0)
+ flags |= SEC_ALLOC | SEC_LOAD;
+
+ reloc_sec = bfd_make_section_with_flags (owner, name, flags);
+
+ if (reloc_sec != NULL
+ && ! bfd_set_section_alignment (owner, reloc_sec, align))
+ reloc_sec = NULL;
+ }
+
+ elf_section_data (sec)->indirect_relocs = reloc_sec;
+ }
+
+ return reloc_sec;
+}
projects / deliverable / binutils-gdb.git / blobdiff