h->type = STT_OBJECT;
if (! info->executable
- && ! _bfd_elf_link_record_dynamic_symbol (info, h))
+ && ! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
elf_hash_table (info)->hgot = h;
h->type = STT_OBJECT;
if (! info->executable
- && ! _bfd_elf_link_record_dynamic_symbol (info, h))
+ && ! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
s = bfd_make_section (abfd, ".hash");
h->type = STT_OBJECT;
if (! info->executable
- && ! _bfd_elf_link_record_dynamic_symbol (info, h))
+ && ! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
one. */
bfd_boolean
-_bfd_elf_link_record_dynamic_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *h)
+bfd_elf_link_record_dynamic_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *h)
{
if (h->dynindx == -1)
{
|| info->shared)
&& h->dynindx == -1)
{
- if (! _bfd_elf_link_record_dynamic_symbol (info, h))
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
/* If this is a weak defined symbol, and we know a corresponding
if (h->weakdef != NULL
&& h->weakdef->dynindx == -1)
{
- if (! _bfd_elf_link_record_dynamic_symbol (info, h->weakdef))
+ if (! bfd_elf_link_record_dynamic_symbol (info, h->weakdef))
return FALSE;
}
}
in a discarded section, eg. a discarded link-once section symbol. */
int
-elf_link_record_local_dynamic_symbol (struct bfd_link_info *info,
- bfd *input_bfd,
- long input_indx)
+bfd_elf_link_record_local_dynamic_symbol (struct bfd_link_info *info,
+ bfd *input_bfd,
+ long input_indx)
{
bfd_size_type amt;
struct elf_link_local_dynamic_entry *entry;
FIXME: Should we check type and size for protected symbol? */
if (ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
- return _bfd_elf_link_record_dynamic_symbol (info, h);
+ return bfd_elf_link_record_dynamic_symbol (info, h);
else
return TRUE;
}
& (ELF_LINK_HASH_REF_REGULAR
| ELF_LINK_HASH_DEF_REGULAR))
{
- if (! _bfd_elf_link_record_dynamic_symbol (info, hi))
+ if (! bfd_elf_link_record_dynamic_symbol (info, hi))
return FALSE;
}
}
if (!eif->verdefs)
{
doit:
- 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;
&& ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
|| (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0))
{
- 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;
if (dynsym && h->dynindx == -1)
{
- if (! _bfd_elf_link_record_dynamic_symbol (info, h))
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
goto error_free_vers;
if (h->weakdef != NULL
&& ! new_weakdef
&& h->weakdef->dynindx == -1)
{
- if (! _bfd_elf_link_record_dynamic_symbol (info, h->weakdef))
+ if (! bfd_elf_link_record_dynamic_symbol (info, h->weakdef))
goto error_free_vers;
}
}
there as well. */
if (hlook->dynindx != -1 && h->dynindx == -1)
{
- if (! _bfd_elf_link_record_dynamic_symbol (info,
- h))
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
goto error_return;
}
real definition and the weak definition. */
if (h->dynindx != -1 && hlook->dynindx == -1)
{
- if (! _bfd_elf_link_record_dynamic_symbol (info,
- hlook))
+ if (! bfd_elf_link_record_dynamic_symbol (info, hlook))
goto error_return;
}
break;
h->type = STT_OBJECT;
h->verinfo.vertree = t;
- if (! _bfd_elf_link_record_dynamic_symbol (info, h))
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
def.vd_version = VER_DEF_CURRENT;
return TRUE;
}
+
+/* Final phase of ELF linker. */
+
+/* A structure we use to avoid passing large numbers of arguments. */
+
+struct elf_final_link_info
+{
+ /* General link information. */
+ struct bfd_link_info *info;
+ /* Output BFD. */
+ bfd *output_bfd;
+ /* Symbol string table. */
+ struct bfd_strtab_hash *symstrtab;
+ /* .dynsym section. */
+ asection *dynsym_sec;
+ /* .hash section. */
+ asection *hash_sec;
+ /* symbol version section (.gnu.version). */
+ asection *symver_sec;
+ /* Buffer large enough to hold contents of any section. */
+ bfd_byte *contents;
+ /* Buffer large enough to hold external relocs of any section. */
+ void *external_relocs;
+ /* Buffer large enough to hold internal relocs of any section. */
+ Elf_Internal_Rela *internal_relocs;
+ /* Buffer large enough to hold external local symbols of any input
+ BFD. */
+ bfd_byte *external_syms;
+ /* And a buffer for symbol section indices. */
+ Elf_External_Sym_Shndx *locsym_shndx;
+ /* Buffer large enough to hold internal local symbols of any input
+ BFD. */
+ Elf_Internal_Sym *internal_syms;
+ /* Array large enough to hold a symbol index for each local symbol
+ of any input BFD. */
+ long *indices;
+ /* Array large enough to hold a section pointer for each local
+ symbol of any input BFD. */
+ asection **sections;
+ /* Buffer to hold swapped out symbols. */
+ bfd_byte *symbuf;
+ /* And one for symbol section indices. */
+ Elf_External_Sym_Shndx *symshndxbuf;
+ /* Number of swapped out symbols in buffer. */
+ size_t symbuf_count;
+ /* Number of symbols which fit in symbuf. */
+ size_t symbuf_size;
+ /* And same for symshndxbuf. */
+ size_t shndxbuf_size;
+};
+
+/* This struct is used to pass information to elf_link_output_extsym. */
+
+struct elf_outext_info
+{
+ bfd_boolean failed;
+ bfd_boolean localsyms;
+ struct elf_final_link_info *finfo;
+};
+
+/* When performing a relocatable link, the input relocations are
+ preserved. But, if they reference global symbols, the indices
+ referenced must be updated. Update all the relocations in
+ REL_HDR (there are COUNT of them), using the data in REL_HASH. */
+
+static void
+elf_link_adjust_relocs (bfd *abfd,
+ Elf_Internal_Shdr *rel_hdr,
+ unsigned int count,
+ struct elf_link_hash_entry **rel_hash)
+{
+ unsigned int i;
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ bfd_byte *erela;
+ void (*swap_in) (bfd *, const bfd_byte *, Elf_Internal_Rela *);
+ void (*swap_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *);
+ bfd_vma r_type_mask;
+ int r_sym_shift;
+
+ if (rel_hdr->sh_entsize == bed->s->sizeof_rel)
+ {
+ swap_in = bed->s->swap_reloc_in;
+ swap_out = bed->s->swap_reloc_out;
+ }
+ else if (rel_hdr->sh_entsize == bed->s->sizeof_rela)
+ {
+ swap_in = bed->s->swap_reloca_in;
+ swap_out = bed->s->swap_reloca_out;
+ }
+ else
+ abort ();
+
+ if (bed->s->int_rels_per_ext_rel > MAX_INT_RELS_PER_EXT_REL)
+ abort ();
+
+ if (bed->s->arch_size == 32)
+ {
+ r_type_mask = 0xff;
+ r_sym_shift = 8;
+ }
+ else
+ {
+ r_type_mask = 0xffffffff;
+ r_sym_shift = 32;
+ }
+
+ erela = rel_hdr->contents;
+ for (i = 0; i < count; i++, rel_hash++, erela += rel_hdr->sh_entsize)
+ {
+ Elf_Internal_Rela irela[MAX_INT_RELS_PER_EXT_REL];
+ unsigned int j;
+
+ if (*rel_hash == NULL)
+ continue;
+
+ BFD_ASSERT ((*rel_hash)->indx >= 0);
+
+ (*swap_in) (abfd, erela, irela);
+ for (j = 0; j < bed->s->int_rels_per_ext_rel; j++)
+ irela[j].r_info = ((bfd_vma) (*rel_hash)->indx << r_sym_shift
+ | (irela[j].r_info & r_type_mask));
+ (*swap_out) (abfd, irela, erela);
+ }
+}
+
+struct elf_link_sort_rela
+{
+ union {
+ bfd_vma offset;
+ bfd_vma sym_mask;
+ } u;
+ enum elf_reloc_type_class type;
+ /* We use this as an array of size int_rels_per_ext_rel. */
+ Elf_Internal_Rela rela[1];
+};
+
+static int
+elf_link_sort_cmp1 (const void *A, const void *B)
+{
+ const struct elf_link_sort_rela *a = A;
+ const struct elf_link_sort_rela *b = B;
+ int relativea, relativeb;
+
+ relativea = a->type == reloc_class_relative;
+ relativeb = b->type == reloc_class_relative;
+
+ if (relativea < relativeb)
+ return 1;
+ if (relativea > relativeb)
+ return -1;
+ if ((a->rela->r_info & a->u.sym_mask) < (b->rela->r_info & b->u.sym_mask))
+ return -1;
+ if ((a->rela->r_info & a->u.sym_mask) > (b->rela->r_info & b->u.sym_mask))
+ return 1;
+ if (a->rela->r_offset < b->rela->r_offset)
+ return -1;
+ if (a->rela->r_offset > b->rela->r_offset)
+ return 1;
+ return 0;
+}
+
+static int
+elf_link_sort_cmp2 (const void *A, const void *B)
+{
+ const struct elf_link_sort_rela *a = A;
+ const struct elf_link_sort_rela *b = B;
+ int copya, copyb;
+
+ if (a->u.offset < b->u.offset)
+ return -1;
+ if (a->u.offset > b->u.offset)
+ return 1;
+ copya = (a->type == reloc_class_copy) * 2 + (a->type == reloc_class_plt);
+ copyb = (b->type == reloc_class_copy) * 2 + (b->type == reloc_class_plt);
+ if (copya < copyb)
+ return -1;
+ if (copya > copyb)
+ return 1;
+ if (a->rela->r_offset < b->rela->r_offset)
+ return -1;
+ if (a->rela->r_offset > b->rela->r_offset)
+ return 1;
+ return 0;
+}
+
+static size_t
+elf_link_sort_relocs (bfd *abfd, struct bfd_link_info *info, asection **psec)
+{
+ asection *reldyn;
+ bfd_size_type count, size;
+ size_t i, ret, sort_elt, ext_size;
+ bfd_byte *sort, *s_non_relative, *p;
+ struct elf_link_sort_rela *sq;
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ int i2e = bed->s->int_rels_per_ext_rel;
+ void (*swap_in) (bfd *, const bfd_byte *, Elf_Internal_Rela *);
+ void (*swap_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *);
+ struct bfd_link_order *lo;
+ bfd_vma r_sym_mask;
+
+ reldyn = bfd_get_section_by_name (abfd, ".rela.dyn");
+ if (reldyn == NULL || reldyn->_raw_size == 0)
+ {
+ reldyn = bfd_get_section_by_name (abfd, ".rel.dyn");
+ if (reldyn == NULL || reldyn->_raw_size == 0)
+ return 0;
+ ext_size = bed->s->sizeof_rel;
+ swap_in = bed->s->swap_reloc_in;
+ swap_out = bed->s->swap_reloc_out;
+ }
+ else
+ {
+ ext_size = bed->s->sizeof_rela;
+ swap_in = bed->s->swap_reloca_in;
+ swap_out = bed->s->swap_reloca_out;
+ }
+ count = reldyn->_raw_size / ext_size;
+
+ size = 0;
+ for (lo = reldyn->link_order_head; lo != NULL; lo = lo->next)
+ if (lo->type == bfd_indirect_link_order)
+ {
+ asection *o = lo->u.indirect.section;
+ size += o->_raw_size;
+ }
+
+ if (size != reldyn->_raw_size)
+ return 0;
+
+ sort_elt = (sizeof (struct elf_link_sort_rela)
+ + (i2e - 1) * sizeof (Elf_Internal_Rela));
+ sort = bfd_zmalloc (sort_elt * count);
+ if (sort == NULL)
+ {
+ (*info->callbacks->warning)
+ (info, _("Not enough memory to sort relocations"), 0, abfd, 0, 0);
+ return 0;
+ }
+
+ if (bed->s->arch_size == 32)
+ r_sym_mask = ~(bfd_vma) 0xff;
+ else
+ r_sym_mask = ~(bfd_vma) 0xffffffff;
+
+ for (lo = reldyn->link_order_head; lo != NULL; lo = lo->next)
+ if (lo->type == bfd_indirect_link_order)
+ {
+ bfd_byte *erel, *erelend;
+ asection *o = lo->u.indirect.section;
+
+ erel = o->contents;
+ erelend = o->contents + o->_raw_size;
+ p = sort + o->output_offset / ext_size * sort_elt;
+ while (erel < erelend)
+ {
+ struct elf_link_sort_rela *s = (struct elf_link_sort_rela *) p;
+ (*swap_in) (abfd, erel, s->rela);
+ s->type = (*bed->elf_backend_reloc_type_class) (s->rela);
+ s->u.sym_mask = r_sym_mask;
+ p += sort_elt;
+ erel += ext_size;
+ }
+ }
+
+ qsort (sort, count, sort_elt, elf_link_sort_cmp1);
+
+ for (i = 0, p = sort; i < count; i++, p += sort_elt)
+ {
+ struct elf_link_sort_rela *s = (struct elf_link_sort_rela *) p;
+ if (s->type != reloc_class_relative)
+ break;
+ }
+ ret = i;
+ s_non_relative = p;
+
+ sq = (struct elf_link_sort_rela *) s_non_relative;
+ for (; i < count; i++, p += sort_elt)
+ {
+ struct elf_link_sort_rela *sp = (struct elf_link_sort_rela *) p;
+ if (((sp->rela->r_info ^ sq->rela->r_info) & r_sym_mask) != 0)
+ sq = sp;
+ sp->u.offset = sq->rela->r_offset;
+ }
+
+ qsort (s_non_relative, count - ret, sort_elt, elf_link_sort_cmp2);
+
+ for (lo = reldyn->link_order_head; lo != NULL; lo = lo->next)
+ if (lo->type == bfd_indirect_link_order)
+ {
+ bfd_byte *erel, *erelend;
+ asection *o = lo->u.indirect.section;
+
+ erel = o->contents;
+ erelend = o->contents + o->_raw_size;
+ p = sort + o->output_offset / ext_size * sort_elt;
+ while (erel < erelend)
+ {
+ struct elf_link_sort_rela *s = (struct elf_link_sort_rela *) p;
+ (*swap_out) (abfd, s->rela, erel);
+ p += sort_elt;
+ erel += ext_size;
+ }
+ }
+
+ free (sort);
+ *psec = reldyn;
+ return ret;
+}
+
+/* Flush the output symbols to the file. */
+
+static bfd_boolean
+elf_link_flush_output_syms (struct elf_final_link_info *finfo,
+ const struct elf_backend_data *bed)
+{
+ if (finfo->symbuf_count > 0)
+ {
+ Elf_Internal_Shdr *hdr;
+ file_ptr pos;
+ bfd_size_type amt;
+
+ hdr = &elf_tdata (finfo->output_bfd)->symtab_hdr;
+ pos = hdr->sh_offset + hdr->sh_size;
+ amt = finfo->symbuf_count * bed->s->sizeof_sym;
+ if (bfd_seek (finfo->output_bfd, pos, SEEK_SET) != 0
+ || bfd_bwrite (finfo->symbuf, amt, finfo->output_bfd) != amt)
+ return FALSE;
+
+ hdr->sh_size += amt;
+ finfo->symbuf_count = 0;
+ }
+
+ return TRUE;
+}
+
+/* Add a symbol to the output symbol table. */
+
+static bfd_boolean
+elf_link_output_sym (struct elf_final_link_info *finfo,
+ const char *name,
+ Elf_Internal_Sym *elfsym,
+ asection *input_sec,
+ struct elf_link_hash_entry *h)
+{
+ bfd_byte *dest;
+ Elf_External_Sym_Shndx *destshndx;
+ bfd_boolean (*output_symbol_hook)
+ (struct bfd_link_info *, const char *, Elf_Internal_Sym *, asection *,
+ struct elf_link_hash_entry *);
+ const struct elf_backend_data *bed;
+
+ bed = get_elf_backend_data (finfo->output_bfd);
+ 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;
+ }
+
+ if (name == NULL || *name == '\0')
+ elfsym->st_name = 0;
+ else if (input_sec->flags & SEC_EXCLUDE)
+ elfsym->st_name = 0;
+ else
+ {
+ elfsym->st_name = (unsigned long) _bfd_stringtab_add (finfo->symstrtab,
+ name, TRUE, FALSE);
+ if (elfsym->st_name == (unsigned long) -1)
+ return FALSE;
+ }
+
+ if (finfo->symbuf_count >= finfo->symbuf_size)
+ {
+ if (! elf_link_flush_output_syms (finfo, bed))
+ return FALSE;
+ }
+
+ dest = finfo->symbuf + finfo->symbuf_count * bed->s->sizeof_sym;
+ destshndx = finfo->symshndxbuf;
+ if (destshndx != NULL)
+ {
+ if (bfd_get_symcount (finfo->output_bfd) >= finfo->shndxbuf_size)
+ {
+ bfd_size_type amt;
+
+ amt = finfo->shndxbuf_size * sizeof (Elf_External_Sym_Shndx);
+ finfo->symshndxbuf = destshndx = bfd_realloc (destshndx, amt * 2);
+ if (destshndx == NULL)
+ return FALSE;
+ memset ((char *) destshndx + amt, 0, amt);
+ finfo->shndxbuf_size *= 2;
+ }
+ destshndx += bfd_get_symcount (finfo->output_bfd);
+ }
+
+ bed->s->swap_symbol_out (finfo->output_bfd, elfsym, dest, destshndx);
+ finfo->symbuf_count += 1;
+ bfd_get_symcount (finfo->output_bfd) += 1;
+
+ return TRUE;
+}
+
+/* For DSOs loaded in via a DT_NEEDED entry, emulate ld.so in
+ allowing an unsatisfied unversioned symbol in the DSO to match a
+ versioned symbol that would normally require an explicit version.
+ We also handle the case that a DSO references a hidden symbol
+ which may be satisfied by a versioned symbol in another DSO. */
+
+static bfd_boolean
+elf_link_check_versioned_symbol (struct bfd_link_info *info,
+ const struct elf_backend_data *bed,
+ struct elf_link_hash_entry *h)
+{
+ bfd *abfd;
+ struct elf_link_loaded_list *loaded;
+
+ if (!is_elf_hash_table (info->hash))
+ return FALSE;
+
+ switch (h->root.type)
+ {
+ default:
+ abfd = NULL;
+ break;
+
+ case bfd_link_hash_undefined:
+ case bfd_link_hash_undefweak:
+ abfd = h->root.u.undef.abfd;
+ if ((abfd->flags & DYNAMIC) == 0
+ || elf_dyn_lib_class (abfd) != DYN_DT_NEEDED)
+ return FALSE;
+ break;
+
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ abfd = h->root.u.def.section->owner;
+ break;
+
+ case bfd_link_hash_common:
+ abfd = h->root.u.c.p->section->owner;
+ break;
+ }
+ BFD_ASSERT (abfd != NULL);
+
+ for (loaded = elf_hash_table (info)->loaded;
+ loaded != NULL;
+ loaded = loaded->next)
+ {
+ bfd *input;
+ Elf_Internal_Shdr *hdr;
+ bfd_size_type symcount;
+ bfd_size_type extsymcount;
+ bfd_size_type extsymoff;
+ Elf_Internal_Shdr *versymhdr;
+ Elf_Internal_Sym *isym;
+ Elf_Internal_Sym *isymend;
+ Elf_Internal_Sym *isymbuf;
+ Elf_External_Versym *ever;
+ Elf_External_Versym *extversym;
+
+ input = loaded->abfd;
+
+ /* We check each DSO for a possible hidden versioned definition. */
+ if (input == abfd
+ || (input->flags & DYNAMIC) == 0
+ || elf_dynversym (input) == 0)
+ continue;
+
+ hdr = &elf_tdata (input)->dynsymtab_hdr;
+
+ symcount = hdr->sh_size / bed->s->sizeof_sym;
+ if (elf_bad_symtab (input))
+ {
+ extsymcount = symcount;
+ extsymoff = 0;
+ }
+ else
+ {
+ extsymcount = symcount - hdr->sh_info;
+ extsymoff = hdr->sh_info;
+ }
+
+ if (extsymcount == 0)
+ continue;
+
+ isymbuf = bfd_elf_get_elf_syms (input, hdr, extsymcount, extsymoff,
+ NULL, NULL, NULL);
+ if (isymbuf == NULL)
+ return FALSE;
+
+ /* Read in any version definitions. */
+ versymhdr = &elf_tdata (input)->dynversym_hdr;
+ extversym = bfd_malloc (versymhdr->sh_size);
+ if (extversym == NULL)
+ goto error_ret;
+
+ if (bfd_seek (input, versymhdr->sh_offset, SEEK_SET) != 0
+ || (bfd_bread (extversym, versymhdr->sh_size, input)
+ != versymhdr->sh_size))
+ {
+ free (extversym);
+ error_ret:
+ free (isymbuf);
+ return FALSE;
+ }
+
+ ever = extversym + extsymoff;
+ isymend = isymbuf + extsymcount;
+ for (isym = isymbuf; isym < isymend; isym++, ever++)
+ {
+ const char *name;
+ Elf_Internal_Versym iver;
+ unsigned short version_index;
+
+ if (ELF_ST_BIND (isym->st_info) == STB_LOCAL
+ || isym->st_shndx == SHN_UNDEF)
+ continue;
+
+ name = bfd_elf_string_from_elf_section (input,
+ hdr->sh_link,
+ isym->st_name);
+ if (strcmp (name, h->root.root.string) != 0)
+ continue;
+
+ _bfd_elf_swap_versym_in (input, ever, &iver);
+
+ if ((iver.vs_vers & VERSYM_HIDDEN) == 0)
+ {
+ /* If we have a non-hidden versioned sym, then it should
+ have provided a definition for the undefined sym. */
+ abort ();
+ }
+
+ version_index = iver.vs_vers & VERSYM_VERSION;
+ if (version_index == 1 || version_index == 2)
+ {
+ /* This is the base or first version. We can use it. */
+ free (extversym);
+ free (isymbuf);
+ return TRUE;
+ }
+ }
+
+ free (extversym);
+ free (isymbuf);
+ }
+
+ return FALSE;
+}
+
+/* Add an external symbol to the symbol table. This is called from
+ the hash table traversal routine. When generating a shared object,
+ we go through the symbol table twice. The first time we output
+ anything that might have been forced to local scope in a version
+ script. The second time we output the symbols that are still
+ global symbols. */
+
+static bfd_boolean
+elf_link_output_extsym (struct elf_link_hash_entry *h, void *data)
+{
+ struct elf_outext_info *eoinfo = data;
+ struct elf_final_link_info *finfo = eoinfo->finfo;
+ bfd_boolean strip;
+ Elf_Internal_Sym sym;
+ asection *input_sec;
+ const struct elf_backend_data *bed;
+
+ if (h->root.type == bfd_link_hash_warning)
+ {
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ if (h->root.type == bfd_link_hash_new)
+ return TRUE;
+ }
+
+ /* Decide whether to output this symbol in this pass. */
+ if (eoinfo->localsyms)
+ {
+ if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
+ return TRUE;
+ }
+ else
+ {
+ if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
+ return TRUE;
+ }
+
+ bed = get_elf_backend_data (finfo->output_bfd);
+
+ /* If we have an undefined symbol reference here then it must have
+ come from a shared library that is being linked in. (Undefined
+ references in regular files have already been handled). If we
+ are reporting errors for this situation then do so now. */
+ if (h->root.type == bfd_link_hash_undefined
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0
+ && ! elf_link_check_versioned_symbol (finfo->info, bed, h)
+ && finfo->info->unresolved_syms_in_shared_libs != RM_IGNORE)
+ {
+ if (! ((*finfo->info->callbacks->undefined_symbol)
+ (finfo->info, h->root.root.string, h->root.u.undef.abfd,
+ NULL, 0, finfo->info->unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)))
+ {
+ eoinfo->failed = TRUE;
+ return FALSE;
+ }
+ }
+
+ /* We should also warn if a forced local symbol is referenced from
+ shared libraries. */
+ if (! finfo->info->relocatable
+ && (! finfo->info->shared)
+ && (h->elf_link_hash_flags
+ & (ELF_LINK_FORCED_LOCAL | ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_DYNAMIC_DEF | ELF_LINK_DYNAMIC_WEAK))
+ == (ELF_LINK_FORCED_LOCAL | ELF_LINK_HASH_REF_DYNAMIC)
+ && ! elf_link_check_versioned_symbol (finfo->info, bed, h))
+ {
+ (*_bfd_error_handler)
+ (_("%s: %s symbol `%s' in %s is referenced by DSO"),
+ bfd_get_filename (finfo->output_bfd),
+ ELF_ST_VISIBILITY (h->other) == STV_INTERNAL
+ ? "internal"
+ : ELF_ST_VISIBILITY (h->other) == STV_HIDDEN
+ ? "hidden" : "local",
+ h->root.root.string,
+ bfd_archive_filename (h->root.u.def.section->owner));
+ eoinfo->failed = TRUE;
+ return FALSE;
+ }
+
+ /* We don't want to output symbols that have never been mentioned by
+ a regular file, or that we have been told to strip. However, if
+ h->indx is set to -2, the symbol is used by a reloc and we must
+ output it. */
+ if (h->indx == -2)
+ strip = FALSE;
+ else if (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
+ || (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0)
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
+ strip = TRUE;
+ else if (finfo->info->strip == strip_all)
+ strip = TRUE;
+ else if (finfo->info->strip == strip_some
+ && bfd_hash_lookup (finfo->info->keep_hash,
+ h->root.root.string, FALSE, FALSE) == NULL)
+ strip = TRUE;
+ else if (finfo->info->strip_discarded
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && elf_discarded_section (h->root.u.def.section))
+ strip = TRUE;
+ else
+ strip = FALSE;
+
+ /* If we're stripping it, and it's not a dynamic symbol, there's
+ nothing else to do unless it is a forced local symbol. */
+ if (strip
+ && h->dynindx == -1
+ && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
+ return TRUE;
+
+ sym.st_value = 0;
+ sym.st_size = h->size;
+ sym.st_other = h->other;
+ if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, h->type);
+ else if (h->root.type == bfd_link_hash_undefweak
+ || h->root.type == bfd_link_hash_defweak)
+ sym.st_info = ELF_ST_INFO (STB_WEAK, h->type);
+ else
+ sym.st_info = ELF_ST_INFO (STB_GLOBAL, h->type);
+
+ switch (h->root.type)
+ {
+ default:
+ case bfd_link_hash_new:
+ case bfd_link_hash_warning:
+ abort ();
+ return FALSE;
+
+ case bfd_link_hash_undefined:
+ case bfd_link_hash_undefweak:
+ input_sec = bfd_und_section_ptr;
+ sym.st_shndx = SHN_UNDEF;
+ break;
+
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ {
+ input_sec = h->root.u.def.section;
+ if (input_sec->output_section != NULL)
+ {
+ sym.st_shndx =
+ _bfd_elf_section_from_bfd_section (finfo->output_bfd,
+ input_sec->output_section);
+ if (sym.st_shndx == SHN_BAD)
+ {
+ (*_bfd_error_handler)
+ (_("%s: could not find output section %s for input section %s"),
+ bfd_get_filename (finfo->output_bfd),
+ input_sec->output_section->name,
+ input_sec->name);
+ eoinfo->failed = TRUE;
+ return FALSE;
+ }
+
+ /* ELF symbols in relocatable files are section relative,
+ but in nonrelocatable files they are virtual
+ addresses. */
+ sym.st_value = h->root.u.def.value + input_sec->output_offset;
+ if (! finfo->info->relocatable)
+ {
+ sym.st_value += input_sec->output_section->vma;
+ if (h->type == STT_TLS)
+ {
+ /* STT_TLS symbols are relative to PT_TLS segment
+ base. */
+ BFD_ASSERT (elf_hash_table (finfo->info)->tls_sec != NULL);
+ sym.st_value -= elf_hash_table (finfo->info)->tls_sec->vma;
+ }
+ }
+ }
+ else
+ {
+ BFD_ASSERT (input_sec->owner == NULL
+ || (input_sec->owner->flags & DYNAMIC) != 0);
+ sym.st_shndx = SHN_UNDEF;
+ input_sec = bfd_und_section_ptr;
+ }
+ }
+ break;
+
+ case bfd_link_hash_common:
+ input_sec = h->root.u.c.p->section;
+ sym.st_shndx = SHN_COMMON;
+ sym.st_value = 1 << h->root.u.c.p->alignment_power;
+ break;
+
+ case bfd_link_hash_indirect:
+ /* These symbols are created by symbol versioning. They point
+ to the decorated version of the name. For example, if the
+ symbol foo@@GNU_1.2 is the default, which should be used when
+ foo is used with no version, then we add an indirect symbol
+ foo which points to foo@@GNU_1.2. We ignore these symbols,
+ since the indirected symbol is already in the hash table. */
+ return TRUE;
+ }
+
+ /* Give the processor backend a chance to tweak the symbol value,
+ and also to finish up anything that needs to be done for this
+ symbol. FIXME: Not calling elf_backend_finish_dynamic_symbol for
+ forced local syms when non-shared is due to a historical quirk. */
+ if ((h->dynindx != -1
+ || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
+ && ((finfo->info->shared
+ && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ || h->root.type != bfd_link_hash_undefweak))
+ || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
+ && elf_hash_table (finfo->info)->dynamic_sections_created)
+ {
+ if (! ((*bed->elf_backend_finish_dynamic_symbol)
+ (finfo->output_bfd, finfo->info, h, &sym)))
+ {
+ eoinfo->failed = TRUE;
+ return FALSE;
+ }
+ }
+
+ /* If we are marking the symbol as undefined, and there are no
+ non-weak references to this symbol from a regular object, then
+ mark the symbol as weak undefined; if there are non-weak
+ references, mark the symbol as strong. We can't do this earlier,
+ because it might not be marked as undefined until the
+ finish_dynamic_symbol routine gets through with it. */
+ if (sym.st_shndx == SHN_UNDEF
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) != 0
+ && (ELF_ST_BIND (sym.st_info) == STB_GLOBAL
+ || ELF_ST_BIND (sym.st_info) == STB_WEAK))
+ {
+ int bindtype;
+
+ if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK) != 0)
+ bindtype = STB_GLOBAL;
+ else
+ bindtype = STB_WEAK;
+ sym.st_info = ELF_ST_INFO (bindtype, ELF_ST_TYPE (sym.st_info));
+ }
+
+ /* If a non-weak symbol with non-default visibility is not defined
+ locally, it is a fatal error. */
+ if (! finfo->info->relocatable
+ && ELF_ST_VISIBILITY (sym.st_other) != STV_DEFAULT
+ && ELF_ST_BIND (sym.st_info) != STB_WEAK
+ && h->root.type == bfd_link_hash_undefined
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ {
+ (*_bfd_error_handler)
+ (_("%s: %s symbol `%s' isn't defined"),
+ bfd_get_filename (finfo->output_bfd),
+ ELF_ST_VISIBILITY (sym.st_other) == STV_PROTECTED
+ ? "protected"
+ : ELF_ST_VISIBILITY (sym.st_other) == STV_INTERNAL
+ ? "internal" : "hidden",
+ h->root.root.string);
+ eoinfo->failed = TRUE;
+ return FALSE;
+ }
+
+ /* If this symbol should be put in the .dynsym section, then put it
+ there now. We already know the symbol index. We also fill in
+ the entry in the .hash section. */
+ if (h->dynindx != -1
+ && elf_hash_table (finfo->info)->dynamic_sections_created)
+ {
+ size_t bucketcount;
+ size_t bucket;
+ size_t hash_entry_size;
+ bfd_byte *bucketpos;
+ bfd_vma chain;
+ bfd_byte *esym;
+
+ sym.st_name = h->dynstr_index;
+ esym = finfo->dynsym_sec->contents + h->dynindx * bed->s->sizeof_sym;
+ bed->s->swap_symbol_out (finfo->output_bfd, &sym, esym, 0);
+
+ bucketcount = elf_hash_table (finfo->info)->bucketcount;
+ bucket = h->elf_hash_value % bucketcount;
+ hash_entry_size
+ = elf_section_data (finfo->hash_sec)->this_hdr.sh_entsize;
+ bucketpos = ((bfd_byte *) finfo->hash_sec->contents
+ + (bucket + 2) * hash_entry_size);
+ chain = bfd_get (8 * hash_entry_size, finfo->output_bfd, bucketpos);
+ bfd_put (8 * hash_entry_size, finfo->output_bfd, h->dynindx, bucketpos);
+ bfd_put (8 * hash_entry_size, finfo->output_bfd, chain,
+ ((bfd_byte *) finfo->hash_sec->contents
+ + (bucketcount + 2 + h->dynindx) * hash_entry_size));
+
+ if (finfo->symver_sec != NULL && finfo->symver_sec->contents != NULL)
+ {
+ Elf_Internal_Versym iversym;
+ Elf_External_Versym *eversym;
+
+ if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ {
+ if (h->verinfo.verdef == NULL)
+ iversym.vs_vers = 0;
+ else
+ iversym.vs_vers = h->verinfo.verdef->vd_exp_refno + 1;
+ }
+ else
+ {
+ if (h->verinfo.vertree == NULL)
+ iversym.vs_vers = 1;
+ else
+ iversym.vs_vers = h->verinfo.vertree->vernum + 1;
+ }
+
+ if ((h->elf_link_hash_flags & ELF_LINK_HIDDEN) != 0)
+ iversym.vs_vers |= VERSYM_HIDDEN;
+
+ eversym = (Elf_External_Versym *) finfo->symver_sec->contents;
+ eversym += h->dynindx;
+ _bfd_elf_swap_versym_out (finfo->output_bfd, &iversym, eversym);
+ }
+ }
+
+ /* If we're stripping it, then it was just a dynamic symbol, and
+ there's nothing else to do. */
+ 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))
+ {
+ eoinfo->failed = TRUE;
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static bfd_boolean
+elf_section_ignore_discarded_relocs (asection *sec)
+{
+ const struct elf_backend_data *bed;
+
+ switch (sec->sec_info_type)
+ {
+ case ELF_INFO_TYPE_STABS:
+ case ELF_INFO_TYPE_EH_FRAME:
+ return TRUE;
+ default:
+ break;
+ }
+
+ bed = get_elf_backend_data (sec->owner);
+ if (bed->elf_backend_ignore_discarded_relocs != NULL
+ && (*bed->elf_backend_ignore_discarded_relocs) (sec))
+ return TRUE;
+
+ return FALSE;
+}
+
+/* Link an input file into the linker output file. This function
+ handles all the sections and relocations of the input file at once.
+ This is so that we only have to read the local symbols once, and
+ don't have to keep them in memory. */
+
+static bfd_boolean
+elf_link_input_bfd (struct elf_final_link_info *finfo, bfd *input_bfd)
+{
+ bfd_boolean (*relocate_section)
+ (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
+ Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
+ bfd *output_bfd;
+ Elf_Internal_Shdr *symtab_hdr;
+ size_t locsymcount;
+ size_t extsymoff;
+ Elf_Internal_Sym *isymbuf;
+ Elf_Internal_Sym *isym;
+ Elf_Internal_Sym *isymend;
+ long *pindex;
+ asection **ppsection;
+ asection *o;
+ const struct elf_backend_data *bed;
+ bfd_boolean emit_relocs;
+ struct elf_link_hash_entry **sym_hashes;
+
+ output_bfd = finfo->output_bfd;
+ bed = get_elf_backend_data (output_bfd);
+ relocate_section = bed->elf_backend_relocate_section;
+
+ /* If this is a dynamic object, we don't want to do anything here:
+ we don't want the local symbols, and we don't want the section
+ contents. */
+ if ((input_bfd->flags & DYNAMIC) != 0)
+ return TRUE;
+
+ emit_relocs = (finfo->info->relocatable
+ || finfo->info->emitrelocations
+ || bed->elf_backend_emit_relocs);
+
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ if (elf_bad_symtab (input_bfd))
+ {
+ locsymcount = symtab_hdr->sh_size / bed->s->sizeof_sym;
+ extsymoff = 0;
+ }
+ else
+ {
+ locsymcount = symtab_hdr->sh_info;
+ extsymoff = symtab_hdr->sh_info;
+ }
+
+ /* Read the local symbols. */
+ isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (isymbuf == NULL && locsymcount != 0)
+ {
+ isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, locsymcount, 0,
+ finfo->internal_syms,
+ finfo->external_syms,
+ finfo->locsym_shndx);
+ if (isymbuf == NULL)
+ return FALSE;
+ }
+
+ /* Find local symbol sections and adjust values of symbols in
+ SEC_MERGE sections. Write out those local symbols we know are
+ going into the output file. */
+ isymend = isymbuf + locsymcount;
+ for (isym = isymbuf, pindex = finfo->indices, ppsection = finfo->sections;
+ isym < isymend;
+ isym++, pindex++, ppsection++)
+ {
+ asection *isec;
+ const char *name;
+ Elf_Internal_Sym osym;
+
+ *pindex = -1;
+
+ if (elf_bad_symtab (input_bfd))
+ {
+ if (ELF_ST_BIND (isym->st_info) != STB_LOCAL)
+ {
+ *ppsection = NULL;
+ continue;
+ }
+ }
+
+ if (isym->st_shndx == SHN_UNDEF)
+ isec = bfd_und_section_ptr;
+ else if (isym->st_shndx < SHN_LORESERVE
+ || isym->st_shndx > SHN_HIRESERVE)
+ {
+ isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
+ if (isec
+ && isec->sec_info_type == ELF_INFO_TYPE_MERGE
+ && ELF_ST_TYPE (isym->st_info) != STT_SECTION)
+ isym->st_value =
+ _bfd_merged_section_offset (output_bfd, &isec,
+ elf_section_data (isec)->sec_info,
+ isym->st_value, 0);
+ }
+ else if (isym->st_shndx == SHN_ABS)
+ isec = bfd_abs_section_ptr;
+ else if (isym->st_shndx == SHN_COMMON)
+ isec = bfd_com_section_ptr;
+ else
+ {
+ /* Who knows? */
+ isec = NULL;
+ }
+
+ *ppsection = isec;
+
+ /* Don't output the first, undefined, symbol. */
+ if (ppsection == finfo->sections)
+ continue;
+
+ if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
+ {
+ /* We never output section symbols. Instead, we use the
+ section symbol of the corresponding section in the output
+ file. */
+ continue;
+ }
+
+ /* If we are stripping all symbols, we don't want to output this
+ one. */
+ if (finfo->info->strip == strip_all)
+ continue;
+
+ /* If we are discarding all local symbols, we don't want to
+ output this one. If we are generating a relocatable output
+ file, then some of the local symbols may be required by
+ relocs; we output them below as we discover that they are
+ needed. */
+ if (finfo->info->discard == discard_all)
+ continue;
+
+ /* If this symbol is defined in a section which we are
+ discarding, we don't need to keep it, but note that
+ linker_mark is only reliable for sections that have contents.
+ For the benefit of the MIPS ELF linker, we check SEC_EXCLUDE
+ as well as linker_mark. */
+ if ((isym->st_shndx < SHN_LORESERVE || isym->st_shndx > SHN_HIRESERVE)
+ && isec != NULL
+ && ((! isec->linker_mark && (isec->flags & SEC_HAS_CONTENTS) != 0)
+ || (! finfo->info->relocatable
+ && (isec->flags & SEC_EXCLUDE) != 0)))
+ continue;
+
+ /* Get the name of the symbol. */
+ name = bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link,
+ isym->st_name);
+ if (name == NULL)
+ return FALSE;
+
+ /* See if we are discarding symbols with this name. */
+ if ((finfo->info->strip == strip_some
+ && (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE, FALSE)
+ == NULL))
+ || (((finfo->info->discard == discard_sec_merge
+ && (isec->flags & SEC_MERGE) && ! finfo->info->relocatable)
+ || finfo->info->discard == discard_l)
+ && 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. */
+ osym.st_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
+ isec->output_section);
+ if (osym.st_shndx == SHN_BAD)
+ return FALSE;
+
+ *pindex = bfd_get_symcount (output_bfd);
+
+ /* ELF symbols in relocatable files are section relative, but
+ in executable files they are virtual addresses. Note that
+ this code assumes that all ELF sections have an associated
+ BFD section with a reasonable value for output_offset; below
+ we assume that they also have a reasonable value for
+ output_section. Any special sections must be set up to meet
+ these requirements. */
+ osym.st_value += isec->output_offset;
+ if (! finfo->info->relocatable)
+ {
+ osym.st_value += isec->output_section->vma;
+ if (ELF_ST_TYPE (osym.st_info) == STT_TLS)
+ {
+ /* STT_TLS symbols are relative to PT_TLS segment base. */
+ BFD_ASSERT (elf_hash_table (finfo->info)->tls_sec != NULL);
+ osym.st_value -= elf_hash_table (finfo->info)->tls_sec->vma;
+ }
+ }
+
+ if (! elf_link_output_sym (finfo, name, &osym, isec, NULL))
+ return FALSE;
+ }
+
+ /* Relocate the contents of each section. */
+ sym_hashes = elf_sym_hashes (input_bfd);
+ for (o = input_bfd->sections; o != NULL; o = o->next)
+ {
+ bfd_byte *contents;
+
+ if (! o->linker_mark)
+ {
+ /* This section was omitted from the link. */
+ continue;
+ }
+
+ if ((o->flags & SEC_HAS_CONTENTS) == 0
+ || (o->_raw_size == 0 && (o->flags & SEC_RELOC) == 0))
+ continue;
+
+ if ((o->flags & SEC_LINKER_CREATED) != 0)
+ {
+ /* Section was created by _bfd_elf_link_create_dynamic_sections
+ or somesuch. */
+ continue;
+ }
+
+ /* Get the contents of the section. They have been cached by a
+ relaxation routine. Note that o is a section in an input
+ file, so the contents field will not have been set by any of
+ the routines which work on output files. */
+ if (elf_section_data (o)->this_hdr.contents != NULL)
+ contents = elf_section_data (o)->this_hdr.contents;
+ else
+ {
+ contents = finfo->contents;
+ if (! bfd_get_section_contents (input_bfd, o, contents, 0,
+ o->_raw_size))
+ return FALSE;
+ }
+
+ if ((o->flags & SEC_RELOC) != 0)
+ {
+ Elf_Internal_Rela *internal_relocs;
+ bfd_vma r_type_mask;
+ int r_sym_shift;
+
+ /* Get the swapped relocs. */
+ internal_relocs
+ = _bfd_elf_link_read_relocs (input_bfd, o, finfo->external_relocs,
+ finfo->internal_relocs, FALSE);
+ if (internal_relocs == NULL
+ && o->reloc_count > 0)
+ return FALSE;
+
+ if (bed->s->arch_size == 32)
+ {
+ r_type_mask = 0xff;
+ r_sym_shift = 8;
+ }
+ else
+ {
+ r_type_mask = 0xffffffff;
+ r_sym_shift = 32;
+ }
+
+ /* Run through the relocs looking for any against symbols
+ from discarded sections and section symbols from
+ removed link-once sections. Complain about relocs
+ against discarded sections. Zero relocs against removed
+ link-once sections. Preserve debug information as much
+ as we can. */
+ if (!elf_section_ignore_discarded_relocs (o))
+ {
+ Elf_Internal_Rela *rel, *relend;
+
+ rel = internal_relocs;
+ relend = rel + o->reloc_count * bed->s->int_rels_per_ext_rel;
+ for ( ; rel < relend; rel++)
+ {
+ unsigned long r_symndx = rel->r_info >> r_sym_shift;
+ asection *sec;
+
+ if (r_symndx >= locsymcount
+ || (elf_bad_symtab (input_bfd)
+ && finfo->sections[r_symndx] == NULL))
+ {
+ struct elf_link_hash_entry *h;
+
+ h = sym_hashes[r_symndx - extsymoff];
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ /* Complain if the definition comes from a
+ discarded section. */
+ sec = h->root.u.def.section;
+ if ((h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && elf_discarded_section (sec))
+ {
+ if ((o->flags & SEC_DEBUGGING) != 0)
+ {
+ BFD_ASSERT (r_symndx != 0);
+ /* Try to preserve debug information. */
+ if ((o->flags & SEC_DEBUGGING) != 0
+ && sec->kept_section != NULL
+ && sec->_raw_size == sec->kept_section->_raw_size)
+ h->root.u.def.section
+ = sec->kept_section;
+ else
+ memset (rel, 0, sizeof (*rel));
+ }
+ else
+ finfo->info->callbacks->error_handler
+ (LD_DEFINITION_IN_DISCARDED_SECTION,
+ _("%T: discarded in section `%s' from %s\n"),
+ h->root.root.string,
+ h->root.root.string,
+ h->root.u.def.section->name,
+ bfd_archive_filename (h->root.u.def.section->owner));
+ }
+ }
+ else
+ {
+ sec = finfo->sections[r_symndx];
+
+ if (sec != NULL && elf_discarded_section (sec))
+ {
+ if ((o->flags & SEC_DEBUGGING) != 0
+ || (sec->flags & SEC_LINK_ONCE) != 0)
+ {
+ BFD_ASSERT (r_symndx != 0);
+ /* Try to preserve debug information. */
+ if ((o->flags & SEC_DEBUGGING) != 0
+ && sec->kept_section != NULL
+ && sec->_raw_size == sec->kept_section->_raw_size)
+ finfo->sections[r_symndx]
+ = sec->kept_section;
+ else
+ {
+ rel->r_info &= r_type_mask;
+ rel->r_addend = 0;
+ }
+ }
+ else
+ {
+ static int count;
+ int ok;
+ char *buf;
+
+ ok = asprintf (&buf, "local symbol %d",
+ count++);
+ if (ok <= 0)
+ buf = (char *) "local symbol";
+ finfo->info->callbacks->error_handler
+ (LD_DEFINITION_IN_DISCARDED_SECTION,
+ _("%T: discarded in section `%s' from %s\n"),
+ buf, buf, sec->name,
+ bfd_archive_filename (input_bfd));
+ if (ok != -1)
+ free (buf);
+ }
+ }
+ }
+ }
+ }
+
+ /* Relocate the section by invoking a back end routine.
+
+ The back end routine is responsible for adjusting the
+ section contents as necessary, and (if using Rela relocs
+ and generating a relocatable output file) adjusting the
+ reloc addend as necessary.
+
+ The back end routine does not have to worry about setting
+ the reloc address or the reloc symbol index.
+
+ The back end routine is given a pointer to the swapped in
+ internal symbols, and can access the hash table entries
+ for the external symbols via elf_sym_hashes (input_bfd).
+
+ When generating relocatable output, the back end routine
+ must handle STB_LOCAL/STT_SECTION symbols specially. The
+ output symbol is going to be a section symbol
+ corresponding to the output section, which will require
+ the addend to be adjusted. */
+
+ if (! (*relocate_section) (output_bfd, finfo->info,
+ input_bfd, o, contents,
+ internal_relocs,
+ isymbuf,
+ finfo->sections))
+ return FALSE;
+
+ if (emit_relocs)
+ {
+ Elf_Internal_Rela *irela;
+ Elf_Internal_Rela *irelaend;
+ bfd_vma last_offset;
+ struct elf_link_hash_entry **rel_hash;
+ Elf_Internal_Shdr *input_rel_hdr, *input_rel_hdr2;
+ unsigned int next_erel;
+ bfd_boolean (*reloc_emitter)
+ (bfd *, asection *, Elf_Internal_Shdr *, Elf_Internal_Rela *);
+ bfd_boolean rela_normal;
+
+ input_rel_hdr = &elf_section_data (o)->rel_hdr;
+ rela_normal = (bed->rela_normal
+ && (input_rel_hdr->sh_entsize
+ == bed->s->sizeof_rela));
+
+ /* Adjust the reloc addresses and symbol indices. */
+
+ irela = internal_relocs;
+ irelaend = irela + o->reloc_count * bed->s->int_rels_per_ext_rel;
+ rel_hash = (elf_section_data (o->output_section)->rel_hashes
+ + elf_section_data (o->output_section)->rel_count
+ + elf_section_data (o->output_section)->rel_count2);
+ last_offset = o->output_offset;
+ if (!finfo->info->relocatable)
+ last_offset += o->output_section->vma;
+ for (next_erel = 0; irela < irelaend; irela++, next_erel++)
+ {
+ unsigned long r_symndx;
+ asection *sec;
+ Elf_Internal_Sym sym;
+
+ if (next_erel == bed->s->int_rels_per_ext_rel)
+ {
+ rel_hash++;
+ next_erel = 0;
+ }
+
+ irela->r_offset = _bfd_elf_section_offset (output_bfd,
+ finfo->info, o,
+ irela->r_offset);
+ if (irela->r_offset >= (bfd_vma) -2)
+ {
+ /* This is a reloc for a deleted entry or somesuch.
+ Turn it into an R_*_NONE reloc, at the same
+ offset as the last reloc. elf_eh_frame.c and
+ elf_bfd_discard_info rely on reloc offsets
+ being ordered. */
+ irela->r_offset = last_offset;
+ irela->r_info = 0;
+ irela->r_addend = 0;
+ continue;
+ }
+
+ irela->r_offset += o->output_offset;
+
+ /* Relocs in an executable have to be virtual addresses. */
+ if (!finfo->info->relocatable)
+ irela->r_offset += o->output_section->vma;
+
+ last_offset = irela->r_offset;
+
+ r_symndx = irela->r_info >> r_sym_shift;
+ if (r_symndx == STN_UNDEF)
+ continue;
+
+ if (r_symndx >= locsymcount
+ || (elf_bad_symtab (input_bfd)
+ && finfo->sections[r_symndx] == NULL))
+ {
+ struct elf_link_hash_entry *rh;
+ unsigned long indx;
+
+ /* This is a reloc against a global symbol. We
+ have not yet output all the local symbols, so
+ we do not know the symbol index of any global
+ symbol. We set the rel_hash entry for this
+ reloc to point to the global hash table entry
+ for this symbol. The symbol index is then
+ set at the end of elf_bfd_final_link. */
+ indx = r_symndx - extsymoff;
+ rh = elf_sym_hashes (input_bfd)[indx];
+ while (rh->root.type == bfd_link_hash_indirect
+ || rh->root.type == bfd_link_hash_warning)
+ rh = (struct elf_link_hash_entry *) rh->root.u.i.link;
+
+ /* Setting the index to -2 tells
+ elf_link_output_extsym that this symbol is
+ used by a reloc. */
+ BFD_ASSERT (rh->indx < 0);
+ rh->indx = -2;
+
+ *rel_hash = rh;
+
+ continue;
+ }
+
+ /* This is a reloc against a local symbol. */
+
+ *rel_hash = NULL;
+ sym = isymbuf[r_symndx];
+ sec = finfo->sections[r_symndx];
+ if (ELF_ST_TYPE (sym.st_info) == STT_SECTION)
+ {
+ /* I suppose the backend ought to fill in the
+ section of any STT_SECTION symbol against a
+ processor specific section. If we have
+ discarded a section, the output_section will
+ be the absolute section. */
+ if (bfd_is_abs_section (sec)
+ || (sec != NULL
+ && bfd_is_abs_section (sec->output_section)))
+ r_symndx = 0;
+ else if (sec == NULL || sec->owner == NULL)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+ else
+ {
+ r_symndx = sec->output_section->target_index;
+ BFD_ASSERT (r_symndx != 0);
+ }
+
+ /* Adjust the addend according to where the
+ section winds up in the output section. */
+ if (rela_normal)
+ irela->r_addend += sec->output_offset;
+ }
+ else
+ {
+ if (finfo->indices[r_symndx] == -1)
+ {
+ unsigned long shlink;
+ const char *name;
+ asection *osec;
+
+ if (finfo->info->strip == strip_all)
+ {
+ /* You can't do ld -r -s. */
+ bfd_set_error (bfd_error_invalid_operation);
+ return FALSE;
+ }
+
+ /* This symbol was skipped earlier, but
+ since it is needed by a reloc, we
+ must output it now. */
+ shlink = symtab_hdr->sh_link;
+ name = (bfd_elf_string_from_elf_section
+ (input_bfd, shlink, sym.st_name));
+ if (name == NULL)
+ return FALSE;
+
+ osec = sec->output_section;
+ sym.st_shndx =
+ _bfd_elf_section_from_bfd_section (output_bfd,
+ osec);
+ if (sym.st_shndx == SHN_BAD)
+ return FALSE;
+
+ sym.st_value += sec->output_offset;
+ if (! finfo->info->relocatable)
+ {
+ sym.st_value += osec->vma;
+ if (ELF_ST_TYPE (sym.st_info) == STT_TLS)
+ {
+ /* STT_TLS symbols are relative to PT_TLS
+ segment base. */
+ BFD_ASSERT (elf_hash_table (finfo->info)
+ ->tls_sec != NULL);
+ sym.st_value -= (elf_hash_table (finfo->info)
+ ->tls_sec->vma);
+ }
+ }
+
+ finfo->indices[r_symndx]
+ = bfd_get_symcount (output_bfd);
+
+ if (! elf_link_output_sym (finfo, name, &sym, sec,
+ NULL))
+ return FALSE;
+ }
+
+ r_symndx = finfo->indices[r_symndx];
+ }
+
+ irela->r_info = ((bfd_vma) r_symndx << r_sym_shift
+ | (irela->r_info & r_type_mask));
+ }
+
+ /* Swap out the relocs. */
+ if (bed->elf_backend_emit_relocs
+ && !(finfo->info->relocatable
+ || finfo->info->emitrelocations))
+ reloc_emitter = bed->elf_backend_emit_relocs;
+ else
+ reloc_emitter = _bfd_elf_link_output_relocs;
+
+ if (input_rel_hdr->sh_size != 0
+ && ! (*reloc_emitter) (output_bfd, o, input_rel_hdr,
+ internal_relocs))
+ return FALSE;
+
+ input_rel_hdr2 = elf_section_data (o)->rel_hdr2;
+ if (input_rel_hdr2 && input_rel_hdr2->sh_size != 0)
+ {
+ internal_relocs += (NUM_SHDR_ENTRIES (input_rel_hdr)
+ * bed->s->int_rels_per_ext_rel);
+ if (! (*reloc_emitter) (output_bfd, o, input_rel_hdr2,
+ internal_relocs))
+ return FALSE;
+ }
+ }
+ }
+
+ /* Write out the modified section contents. */
+ if (bed->elf_backend_write_section
+ && (*bed->elf_backend_write_section) (output_bfd, o, contents))
+ {
+ /* Section written out. */
+ }
+ else switch (o->sec_info_type)
+ {
+ case ELF_INFO_TYPE_STABS:
+ if (! (_bfd_write_section_stabs
+ (output_bfd,
+ &elf_hash_table (finfo->info)->stab_info,
+ o, &elf_section_data (o)->sec_info, contents)))
+ return FALSE;
+ break;
+ case ELF_INFO_TYPE_MERGE:
+ if (! _bfd_write_merged_section (output_bfd, o,
+ elf_section_data (o)->sec_info))
+ return FALSE;
+ break;
+ case ELF_INFO_TYPE_EH_FRAME:
+ {
+ if (! _bfd_elf_write_section_eh_frame (output_bfd, finfo->info,
+ o, contents))
+ return FALSE;
+ }
+ break;
+ default:
+ {
+ bfd_size_type sec_size;
+
+ sec_size = (o->_cooked_size != 0 ? o->_cooked_size : o->_raw_size);
+ if (! (o->flags & SEC_EXCLUDE)
+ && ! bfd_set_section_contents (output_bfd, o->output_section,
+ contents,
+ (file_ptr) o->output_offset,
+ sec_size))
+ return FALSE;
+ }
+ break;
+ }
+ }
+
+ return TRUE;
+}
+
+/* Generate a reloc when linking an ELF file. This is a reloc
+ requested by the linker, and does come from any input file. This
+ is used to build constructor and destructor tables when linking
+ with -Ur. */
+
+static bfd_boolean
+elf_reloc_link_order (bfd *output_bfd,
+ struct bfd_link_info *info,
+ asection *output_section,
+ struct bfd_link_order *link_order)
+{
+ reloc_howto_type *howto;
+ long indx;
+ bfd_vma offset;
+ bfd_vma addend;
+ struct elf_link_hash_entry **rel_hash_ptr;
+ Elf_Internal_Shdr *rel_hdr;
+ const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
+ Elf_Internal_Rela irel[MAX_INT_RELS_PER_EXT_REL];
+ bfd_byte *erel;
+ unsigned int i;
+
+ howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc);
+ if (howto == NULL)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
+ addend = link_order->u.reloc.p->addend;
+
+ /* Figure out the symbol index. */
+ rel_hash_ptr = (elf_section_data (output_section)->rel_hashes
+ + elf_section_data (output_section)->rel_count
+ + elf_section_data (output_section)->rel_count2);
+ if (link_order->type == bfd_section_reloc_link_order)
+ {
+ indx = link_order->u.reloc.p->u.section->target_index;
+ BFD_ASSERT (indx != 0);
+ *rel_hash_ptr = NULL;
+ }
+ else
+ {
+ struct elf_link_hash_entry *h;
+
+ /* Treat a reloc against a defined symbol as though it were
+ actually against the section. */
+ h = ((struct elf_link_hash_entry *)
+ bfd_wrapped_link_hash_lookup (output_bfd, info,
+ link_order->u.reloc.p->u.name,
+ FALSE, FALSE, TRUE));
+ if (h != NULL
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak))
+ {
+ asection *section;
+
+ section = h->root.u.def.section;
+ indx = section->output_section->target_index;
+ *rel_hash_ptr = NULL;
+ /* It seems that we ought to add the symbol value to the
+ addend here, but in practice it has already been added
+ because it was passed to constructor_callback. */
+ addend += section->output_section->vma + section->output_offset;
+ }
+ else if (h != NULL)
+ {
+ /* Setting the index to -2 tells elf_link_output_extsym that
+ this symbol is used by a reloc. */
+ h->indx = -2;
+ *rel_hash_ptr = h;
+ indx = 0;
+ }
+ else
+ {
+ if (! ((*info->callbacks->unattached_reloc)
+ (info, link_order->u.reloc.p->u.name, NULL, NULL, 0)))
+ return FALSE;
+ indx = 0;
+ }
+ }
+
+ /* If this is an inplace reloc, we must write the addend into the
+ object file. */
+ if (howto->partial_inplace && addend != 0)
+ {
+ bfd_size_type size;
+ bfd_reloc_status_type rstat;
+ bfd_byte *buf;
+ bfd_boolean ok;
+ const char *sym_name;
+
+ size = bfd_get_reloc_size (howto);
+ buf = bfd_zmalloc (size);
+ if (buf == NULL)
+ return FALSE;
+ rstat = _bfd_relocate_contents (howto, output_bfd, addend, buf);
+ switch (rstat)
+ {
+ case bfd_reloc_ok:
+ break;
+
+ default:
+ case bfd_reloc_outofrange:
+ abort ();
+
+ case bfd_reloc_overflow:
+ if (link_order->type == bfd_section_reloc_link_order)
+ sym_name = bfd_section_name (output_bfd,
+ link_order->u.reloc.p->u.section);
+ else
+ sym_name = link_order->u.reloc.p->u.name;
+ if (! ((*info->callbacks->reloc_overflow)
+ (info, sym_name, howto->name, addend, NULL, NULL, 0)))
+ {
+ free (buf);
+ return FALSE;
+ }
+ break;
+ }
+ ok = bfd_set_section_contents (output_bfd, output_section, buf,
+ link_order->offset, size);
+ free (buf);
+ if (! ok)
+ return FALSE;
+ }
+
+ /* The address of a reloc is relative to the section in a
+ relocatable file, and is a virtual address in an executable
+ file. */
+ offset = link_order->offset;
+ if (! info->relocatable)
+ offset += output_section->vma;
+
+ for (i = 0; i < bed->s->int_rels_per_ext_rel; i++)
+ {
+ irel[i].r_offset = offset;
+ irel[i].r_info = 0;
+ irel[i].r_addend = 0;
+ }
+ if (bed->s->arch_size == 32)
+ irel[0].r_info = ELF32_R_INFO (indx, howto->type);
+ else
+ irel[0].r_info = ELF64_R_INFO (indx, howto->type);
+
+ rel_hdr = &elf_section_data (output_section)->rel_hdr;
+ erel = rel_hdr->contents;
+ if (rel_hdr->sh_type == SHT_REL)
+ {
+ erel += (elf_section_data (output_section)->rel_count
+ * bed->s->sizeof_rel);
+ (*bed->s->swap_reloc_out) (output_bfd, irel, erel);
+ }
+ else
+ {
+ irel[0].r_addend = addend;
+ erel += (elf_section_data (output_section)->rel_count
+ * bed->s->sizeof_rela);
+ (*bed->s->swap_reloca_out) (output_bfd, irel, erel);
+ }
+
+ ++elf_section_data (output_section)->rel_count;
+
+ return TRUE;
+}
+
+/* Do the final step of an ELF link. */
+
+bfd_boolean
+bfd_elf_final_link (bfd *abfd, struct bfd_link_info *info)
+{
+ bfd_boolean dynamic;
+ bfd_boolean emit_relocs;
+ bfd *dynobj;
+ struct elf_final_link_info finfo;
+ register asection *o;
+ register struct bfd_link_order *p;
+ register bfd *sub;
+ bfd_size_type max_contents_size;
+ bfd_size_type max_external_reloc_size;
+ bfd_size_type max_internal_reloc_count;
+ bfd_size_type max_sym_count;
+ bfd_size_type max_sym_shndx_count;
+ file_ptr off;
+ Elf_Internal_Sym elfsym;
+ unsigned int i;
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Shdr *symtab_shndx_hdr;
+ Elf_Internal_Shdr *symstrtab_hdr;
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ struct elf_outext_info eoinfo;
+ bfd_boolean merged;
+ size_t relativecount = 0;
+ asection *reldyn = 0;
+ bfd_size_type amt;
+
+ if (! is_elf_hash_table (info->hash))
+ return FALSE;
+
+ if (info->shared)
+ abfd->flags |= DYNAMIC;
+
+ dynamic = elf_hash_table (info)->dynamic_sections_created;
+ dynobj = elf_hash_table (info)->dynobj;
+
+ emit_relocs = (info->relocatable
+ || info->emitrelocations
+ || bed->elf_backend_emit_relocs);
+
+ finfo.info = info;
+ finfo.output_bfd = abfd;
+ finfo.symstrtab = _bfd_elf_stringtab_init ();
+ if (finfo.symstrtab == NULL)
+ return FALSE;
+
+ if (! dynamic)
+ {
+ finfo.dynsym_sec = NULL;
+ finfo.hash_sec = NULL;
+ finfo.symver_sec = NULL;
+ }
+ else
+ {
+ finfo.dynsym_sec = bfd_get_section_by_name (dynobj, ".dynsym");
+ finfo.hash_sec = bfd_get_section_by_name (dynobj, ".hash");
+ BFD_ASSERT (finfo.dynsym_sec != NULL && finfo.hash_sec != NULL);
+ finfo.symver_sec = bfd_get_section_by_name (dynobj, ".gnu.version");
+ /* Note that it is OK if symver_sec is NULL. */
+ }
+
+ finfo.contents = NULL;
+ finfo.external_relocs = NULL;
+ finfo.internal_relocs = NULL;
+ finfo.external_syms = NULL;
+ finfo.locsym_shndx = NULL;
+ finfo.internal_syms = NULL;
+ finfo.indices = NULL;
+ finfo.sections = NULL;
+ finfo.symbuf = NULL;
+ finfo.symshndxbuf = NULL;
+ finfo.symbuf_count = 0;
+ finfo.shndxbuf_size = 0;
+
+ /* Count up the number of relocations we will output for each output
+ section, so that we know the sizes of the reloc sections. We
+ also figure out some maximum sizes. */
+ max_contents_size = 0;
+ max_external_reloc_size = 0;
+ max_internal_reloc_count = 0;
+ max_sym_count = 0;
+ max_sym_shndx_count = 0;
+ merged = FALSE;
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ struct bfd_elf_section_data *esdo = elf_section_data (o);
+ o->reloc_count = 0;
+
+ for (p = o->link_order_head; p != NULL; p = p->next)
+ {
+ unsigned int reloc_count = 0;
+ struct bfd_elf_section_data *esdi = NULL;
+ unsigned int *rel_count1;
+
+ if (p->type == bfd_section_reloc_link_order
+ || p->type == bfd_symbol_reloc_link_order)
+ reloc_count = 1;
+ else if (p->type == bfd_indirect_link_order)
+ {
+ asection *sec;
+
+ sec = p->u.indirect.section;
+ esdi = elf_section_data (sec);
+
+ /* Mark all sections which are to be included in the
+ link. This will normally be every section. We need
+ to do this so that we can identify any sections which
+ the linker has decided to not include. */
+ sec->linker_mark = TRUE;
+
+ if (sec->flags & SEC_MERGE)
+ merged = TRUE;
+
+ if (info->relocatable || info->emitrelocations)
+ reloc_count = sec->reloc_count;
+ else if (bed->elf_backend_count_relocs)
+ {
+ Elf_Internal_Rela * relocs;
+
+ relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
+ info->keep_memory);
+
+ reloc_count = (*bed->elf_backend_count_relocs) (sec, relocs);
+
+ if (elf_section_data (o)->relocs != relocs)
+ free (relocs);
+ }
+
+ if (sec->_raw_size > max_contents_size)
+ max_contents_size = sec->_raw_size;
+ if (sec->_cooked_size > max_contents_size)
+ max_contents_size = sec->_cooked_size;
+
+ /* We are interested in just local symbols, not all
+ symbols. */
+ if (bfd_get_flavour (sec->owner) == bfd_target_elf_flavour
+ && (sec->owner->flags & DYNAMIC) == 0)
+ {
+ size_t sym_count;
+
+ if (elf_bad_symtab (sec->owner))
+ sym_count = (elf_tdata (sec->owner)->symtab_hdr.sh_size
+ / bed->s->sizeof_sym);
+ else
+ sym_count = elf_tdata (sec->owner)->symtab_hdr.sh_info;
+
+ if (sym_count > max_sym_count)
+ max_sym_count = sym_count;
+
+ if (sym_count > max_sym_shndx_count
+ && elf_symtab_shndx (sec->owner) != 0)
+ max_sym_shndx_count = sym_count;
+
+ if ((sec->flags & SEC_RELOC) != 0)
+ {
+ size_t ext_size;
+
+ ext_size = elf_section_data (sec)->rel_hdr.sh_size;
+ if (ext_size > max_external_reloc_size)
+ max_external_reloc_size = ext_size;
+ if (sec->reloc_count > max_internal_reloc_count)
+ max_internal_reloc_count = sec->reloc_count;
+ }
+ }
+ }
+
+ if (reloc_count == 0)
+ continue;
+
+ o->reloc_count += reloc_count;
+
+ /* MIPS may have a mix of REL and RELA relocs on sections.
+ To support this curious ABI we keep reloc counts in
+ elf_section_data too. We must be careful to add the
+ relocations from the input section to the right output
+ count. FIXME: Get rid of one count. We have
+ o->reloc_count == esdo->rel_count + esdo->rel_count2. */
+ rel_count1 = &esdo->rel_count;
+ if (esdi != NULL)
+ {
+ bfd_boolean same_size;
+ bfd_size_type entsize1;
+
+ entsize1 = esdi->rel_hdr.sh_entsize;
+ BFD_ASSERT (entsize1 == bed->s->sizeof_rel
+ || entsize1 == bed->s->sizeof_rela);
+ same_size = !o->use_rela_p == (entsize1 == bed->s->sizeof_rel);
+
+ if (!same_size)
+ rel_count1 = &esdo->rel_count2;
+
+ if (esdi->rel_hdr2 != NULL)
+ {
+ bfd_size_type entsize2 = esdi->rel_hdr2->sh_entsize;
+ unsigned int alt_count;
+ unsigned int *rel_count2;
+
+ BFD_ASSERT (entsize2 != entsize1
+ && (entsize2 == bed->s->sizeof_rel
+ || entsize2 == bed->s->sizeof_rela));
+
+ rel_count2 = &esdo->rel_count2;
+ if (!same_size)
+ rel_count2 = &esdo->rel_count;
+
+ /* The following is probably too simplistic if the
+ backend counts output relocs unusually. */
+ BFD_ASSERT (bed->elf_backend_count_relocs == NULL);
+ alt_count = NUM_SHDR_ENTRIES (esdi->rel_hdr2);
+ *rel_count2 += alt_count;
+ reloc_count -= alt_count;
+ }
+ }
+ *rel_count1 += reloc_count;
+ }
+
+ if (o->reloc_count > 0)
+ o->flags |= SEC_RELOC;
+ else
+ {
+ /* Explicitly clear the SEC_RELOC flag. The linker tends to
+ set it (this is probably a bug) and if it is set
+ assign_section_numbers will create a reloc section. */
+ o->flags &=~ SEC_RELOC;
+ }
+
+ /* If the SEC_ALLOC flag is not set, force the section VMA to
+ zero. This is done in elf_fake_sections as well, but forcing
+ the VMA to 0 here will ensure that relocs against these
+ sections are handled correctly. */
+ if ((o->flags & SEC_ALLOC) == 0
+ && ! o->user_set_vma)
+ o->vma = 0;
+ }
+
+ if (! info->relocatable && merged)
+ elf_link_hash_traverse (elf_hash_table (info),
+ _bfd_elf_link_sec_merge_syms, abfd);
+
+ /* Figure out the file positions for everything but the symbol table
+ and the relocs. We set symcount to force assign_section_numbers
+ to create a symbol table. */
+ bfd_get_symcount (abfd) = info->strip == strip_all ? 0 : 1;
+ BFD_ASSERT (! abfd->output_has_begun);
+ if (! _bfd_elf_compute_section_file_positions (abfd, info))
+ goto error_return;
+
+ /* That created the reloc sections. Set their sizes, and assign
+ them file positions, and allocate some buffers. */
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ if ((o->flags & SEC_RELOC) != 0)
+ {
+ if (!(_bfd_elf_link_size_reloc_section
+ (abfd, &elf_section_data (o)->rel_hdr, o)))
+ goto error_return;
+
+ if (elf_section_data (o)->rel_hdr2
+ && !(_bfd_elf_link_size_reloc_section
+ (abfd, elf_section_data (o)->rel_hdr2, o)))
+ goto error_return;
+ }
+
+ /* Now, reset REL_COUNT and REL_COUNT2 so that we can use them
+ to count upwards while actually outputting the relocations. */
+ elf_section_data (o)->rel_count = 0;
+ elf_section_data (o)->rel_count2 = 0;
+ }
+
+ _bfd_elf_assign_file_positions_for_relocs (abfd);
+
+ /* We have now assigned file positions for all the sections except
+ .symtab and .strtab. We start the .symtab section at the current
+ file position, and write directly to it. We build the .strtab
+ section in memory. */
+ bfd_get_symcount (abfd) = 0;
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ /* sh_name is set in prep_headers. */
+ symtab_hdr->sh_type = SHT_SYMTAB;
+ /* sh_flags, sh_addr and sh_size all start off zero. */
+ symtab_hdr->sh_entsize = bed->s->sizeof_sym;
+ /* sh_link is set in assign_section_numbers. */
+ /* sh_info is set below. */
+ /* sh_offset is set just below. */
+ symtab_hdr->sh_addralign = 1 << bed->s->log_file_align;
+
+ off = elf_tdata (abfd)->next_file_pos;
+ off = _bfd_elf_assign_file_position_for_section (symtab_hdr, off, TRUE);
+
+ /* Note that at this point elf_tdata (abfd)->next_file_pos is
+ incorrect. We do not yet know the size of the .symtab section.
+ We correct next_file_pos below, after we do know the size. */
+
+ /* Allocate a buffer to hold swapped out symbols. This is to avoid
+ continuously seeking to the right position in the file. */
+ if (! info->keep_memory || max_sym_count < 20)
+ finfo.symbuf_size = 20;
+ else
+ finfo.symbuf_size = max_sym_count;
+ amt = finfo.symbuf_size;
+ amt *= bed->s->sizeof_sym;
+ finfo.symbuf = bfd_malloc (amt);
+ if (finfo.symbuf == NULL)
+ goto error_return;
+ if (elf_numsections (abfd) > SHN_LORESERVE)
+ {
+ /* Wild guess at number of output symbols. realloc'd as needed. */
+ amt = 2 * max_sym_count + elf_numsections (abfd) + 1000;
+ finfo.shndxbuf_size = amt;
+ amt *= sizeof (Elf_External_Sym_Shndx);
+ finfo.symshndxbuf = bfd_zmalloc (amt);
+ if (finfo.symshndxbuf == NULL)
+ goto error_return;
+ }
+
+ /* Start writing out the symbol table. The first symbol is always a
+ dummy symbol. */
+ if (info->strip != strip_all
+ || emit_relocs)
+ {
+ elfsym.st_value = 0;
+ elfsym.st_size = 0;
+ 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))
+ goto error_return;
+ }
+
+#if 0
+ /* Some standard ELF linkers do this, but we don't because it causes
+ bootstrap comparison failures. */
+ /* Output a file symbol for the output file as the second symbol.
+ We output this even if we are discarding local symbols, although
+ I'm not sure if this is correct. */
+ elfsym.st_value = 0;
+ elfsym.st_size = 0;
+ elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
+ elfsym.st_other = 0;
+ elfsym.st_shndx = SHN_ABS;
+ if (! elf_link_output_sym (&finfo, bfd_get_filename (abfd),
+ &elfsym, bfd_abs_section_ptr, NULL))
+ goto error_return;
+#endif
+
+ /* Output a symbol for each section. We output these even if we are
+ discarding local symbols, since they are used for relocs. These
+ symbols have no names. We store the index of each one in the
+ index field of the section, so that we can find it again when
+ outputting relocs. */
+ if (info->strip != strip_all
+ || emit_relocs)
+ {
+ elfsym.st_size = 0;
+ elfsym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
+ elfsym.st_other = 0;
+ for (i = 1; i < elf_numsections (abfd); i++)
+ {
+ o = bfd_section_from_elf_index (abfd, i);
+ if (o != NULL)
+ o->target_index = bfd_get_symcount (abfd);
+ elfsym.st_shndx = i;
+ if (info->relocatable || o == NULL)
+ elfsym.st_value = 0;
+ else
+ elfsym.st_value = o->vma;
+ if (! elf_link_output_sym (&finfo, NULL, &elfsym, o, NULL))
+ goto error_return;
+ if (i == SHN_LORESERVE - 1)
+ i += SHN_HIRESERVE + 1 - SHN_LORESERVE;
+ }
+ }
+
+ /* Allocate some memory to hold information read in from the input
+ files. */
+ if (max_contents_size != 0)
+ {
+ finfo.contents = bfd_malloc (max_contents_size);
+ if (finfo.contents == NULL)
+ goto error_return;
+ }
+
+ if (max_external_reloc_size != 0)
+ {
+ finfo.external_relocs = bfd_malloc (max_external_reloc_size);
+ if (finfo.external_relocs == NULL)
+ goto error_return;
+ }
+
+ if (max_internal_reloc_count != 0)
+ {
+ amt = max_internal_reloc_count * bed->s->int_rels_per_ext_rel;
+ amt *= sizeof (Elf_Internal_Rela);
+ finfo.internal_relocs = bfd_malloc (amt);
+ if (finfo.internal_relocs == NULL)
+ goto error_return;
+ }
+
+ if (max_sym_count != 0)
+ {
+ amt = max_sym_count * bed->s->sizeof_sym;
+ finfo.external_syms = bfd_malloc (amt);
+ if (finfo.external_syms == NULL)
+ goto error_return;
+
+ amt = max_sym_count * sizeof (Elf_Internal_Sym);
+ finfo.internal_syms = bfd_malloc (amt);
+ if (finfo.internal_syms == NULL)
+ goto error_return;
+
+ amt = max_sym_count * sizeof (long);
+ finfo.indices = bfd_malloc (amt);
+ if (finfo.indices == NULL)
+ goto error_return;
+
+ amt = max_sym_count * sizeof (asection *);
+ finfo.sections = bfd_malloc (amt);
+ if (finfo.sections == NULL)
+ goto error_return;
+ }
+
+ if (max_sym_shndx_count != 0)
+ {
+ amt = max_sym_shndx_count * sizeof (Elf_External_Sym_Shndx);
+ finfo.locsym_shndx = bfd_malloc (amt);
+ if (finfo.locsym_shndx == NULL)
+ goto error_return;
+ }
+
+ if (elf_hash_table (info)->tls_sec)
+ {
+ bfd_vma base, end = 0;
+ asection *sec;
+
+ for (sec = elf_hash_table (info)->tls_sec;
+ sec && (sec->flags & SEC_THREAD_LOCAL);
+ sec = sec->next)
+ {
+ bfd_vma size = sec->_raw_size;
+
+ if (size == 0 && (sec->flags & SEC_HAS_CONTENTS) == 0)
+ {
+ struct bfd_link_order *o;
+
+ for (o = sec->link_order_head; o != NULL; o = o->next)
+ if (size < o->offset + o->size)
+ size = o->offset + o->size;
+ }
+ end = sec->vma + size;
+ }
+ base = elf_hash_table (info)->tls_sec->vma;
+ end = align_power (end, elf_hash_table (info)->tls_sec->alignment_power);
+ elf_hash_table (info)->tls_size = end - base;
+ }
+
+ /* Since ELF permits relocations to be against local symbols, we
+ must have the local symbols available when we do the relocations.
+ Since we would rather only read the local symbols once, and we
+ would rather not keep them in memory, we handle all the
+ relocations for a single input file at the same time.
+
+ Unfortunately, there is no way to know the total number of local
+ symbols until we have seen all of them, and the local symbol
+ indices precede the global symbol indices. This means that when
+ we are generating relocatable output, and we see a reloc against
+ a global symbol, we can not know the symbol index until we have
+ finished examining all the local symbols to see which ones we are
+ going to output. To deal with this, we keep the relocations in
+ memory, and don't output them until the end of the link. This is
+ an unfortunate waste of memory, but I don't see a good way around
+ it. Fortunately, it only happens when performing a relocatable
+ link, which is not the common case. FIXME: If keep_memory is set
+ we could write the relocs out and then read them again; I don't
+ know how bad the memory loss will be. */
+
+ for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+ sub->output_has_begun = FALSE;
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ for (p = o->link_order_head; p != NULL; p = p->next)
+ {
+ if (p->type == bfd_indirect_link_order
+ && (bfd_get_flavour ((sub = p->u.indirect.section->owner))
+ == bfd_target_elf_flavour)
+ && elf_elfheader (sub)->e_ident[EI_CLASS] == bed->s->elfclass)
+ {
+ if (! sub->output_has_begun)
+ {
+ if (! elf_link_input_bfd (&finfo, sub))
+ goto error_return;
+ sub->output_has_begun = TRUE;
+ }
+ }
+ else if (p->type == bfd_section_reloc_link_order
+ || p->type == bfd_symbol_reloc_link_order)
+ {
+ if (! elf_reloc_link_order (abfd, info, o, p))
+ goto error_return;
+ }
+ else
+ {
+ if (! _bfd_default_link_order (abfd, info, o, p))
+ goto error_return;
+ }
+ }
+ }
+
+ /* Output any global symbols that got converted to local in a
+ version script or due to symbol visibility. We do this in a
+ separate step since ELF requires all local symbols to appear
+ prior to any global symbols. FIXME: We should only do this if
+ some global symbols were, in fact, converted to become local.
+ FIXME: Will this work correctly with the Irix 5 linker? */
+ eoinfo.failed = FALSE;
+ eoinfo.finfo = &finfo;
+ eoinfo.localsyms = TRUE;
+ elf_link_hash_traverse (elf_hash_table (info), elf_link_output_extsym,
+ &eoinfo);
+ if (eoinfo.failed)
+ return FALSE;
+
+ /* That wrote out all the local symbols. Finish up the symbol table
+ with the global symbols. Even if we want to strip everything we
+ can, we still need to deal with those global symbols that got
+ converted to local in a version script. */
+
+ /* The sh_info field records the index of the first non local symbol. */
+ symtab_hdr->sh_info = bfd_get_symcount (abfd);
+
+ if (dynamic
+ && finfo.dynsym_sec->output_section != bfd_abs_section_ptr)
+ {
+ Elf_Internal_Sym sym;
+ bfd_byte *dynsym = finfo.dynsym_sec->contents;
+ long last_local = 0;
+
+ /* Write out the section symbols for the output sections. */
+ if (info->shared)
+ {
+ asection *s;
+
+ sym.st_size = 0;
+ sym.st_name = 0;
+ sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
+ sym.st_other = 0;
+
+ for (s = abfd->sections; s != NULL; s = s->next)
+ {
+ int indx;
+ bfd_byte *dest;
+ long dynindx;
+
+ indx = elf_section_data (s)->this_idx;
+ dynindx = elf_section_data (s)->dynindx;
+ BFD_ASSERT (indx > 0);
+ sym.st_shndx = indx;
+ sym.st_value = s->vma;
+ dest = dynsym + dynindx * bed->s->sizeof_sym;
+ bed->s->swap_symbol_out (abfd, &sym, dest, 0);
+ }
+
+ last_local = bfd_count_sections (abfd);
+ }
+
+ /* Write out the local dynsyms. */
+ if (elf_hash_table (info)->dynlocal)
+ {
+ struct elf_link_local_dynamic_entry *e;
+ for (e = elf_hash_table (info)->dynlocal; e ; e = e->next)
+ {
+ asection *s;
+ bfd_byte *dest;
+
+ sym.st_size = e->isym.st_size;
+ sym.st_other = e->isym.st_other;
+
+ /* Copy the internal symbol as is.
+ Note that we saved a word of storage and overwrote
+ the original st_name with the dynstr_index. */
+ sym = e->isym;
+
+ if (e->isym.st_shndx != SHN_UNDEF
+ && (e->isym.st_shndx < SHN_LORESERVE
+ || e->isym.st_shndx > SHN_HIRESERVE))
+ {
+ s = bfd_section_from_elf_index (e->input_bfd,
+ e->isym.st_shndx);
+
+ sym.st_shndx =
+ elf_section_data (s->output_section)->this_idx;
+ sym.st_value = (s->output_section->vma
+ + s->output_offset
+ + e->isym.st_value);
+ }
+
+ if (last_local < e->dynindx)
+ last_local = e->dynindx;
+
+ dest = dynsym + e->dynindx * bed->s->sizeof_sym;
+ bed->s->swap_symbol_out (abfd, &sym, dest, 0);
+ }
+ }
+
+ elf_section_data (finfo.dynsym_sec->output_section)->this_hdr.sh_info =
+ last_local + 1;
+ }
+
+ /* We get the global symbols from the hash table. */
+ eoinfo.failed = FALSE;
+ eoinfo.localsyms = FALSE;
+ eoinfo.finfo = &finfo;
+ elf_link_hash_traverse (elf_hash_table (info), elf_link_output_extsym,
+ &eoinfo);
+ if (eoinfo.failed)
+ return FALSE;
+
+ /* If backend needs to output some symbols not present in the hash
+ table, do it now. */
+ if (bed->elf_backend_output_arch_syms)
+ {
+ typedef bfd_boolean (*out_sym_func)
+ (void *, const char *, Elf_Internal_Sym *, asection *,
+ struct elf_link_hash_entry *);
+
+ if (! ((*bed->elf_backend_output_arch_syms)
+ (abfd, info, &finfo, (out_sym_func) elf_link_output_sym)))
+ return FALSE;
+ }
+
+ /* Flush all symbols to the file. */
+ if (! elf_link_flush_output_syms (&finfo, bed))
+ return FALSE;
+
+ /* Now we know the size of the symtab section. */
+ off += symtab_hdr->sh_size;
+
+ symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
+ if (symtab_shndx_hdr->sh_name != 0)
+ {
+ symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX;
+ symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx);
+ symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx);
+ amt = bfd_get_symcount (abfd) * sizeof (Elf_External_Sym_Shndx);
+ symtab_shndx_hdr->sh_size = amt;
+
+ off = _bfd_elf_assign_file_position_for_section (symtab_shndx_hdr,
+ off, TRUE);
+
+ if (bfd_seek (abfd, symtab_shndx_hdr->sh_offset, SEEK_SET) != 0
+ || (bfd_bwrite (finfo.symshndxbuf, amt, abfd) != amt))
+ return FALSE;
+ }
+
+
+ /* Finish up and write out the symbol string table (.strtab)
+ section. */
+ symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
+ /* sh_name was set in prep_headers. */
+ symstrtab_hdr->sh_type = SHT_STRTAB;
+ symstrtab_hdr->sh_flags = 0;
+ symstrtab_hdr->sh_addr = 0;
+ symstrtab_hdr->sh_size = _bfd_stringtab_size (finfo.symstrtab);
+ symstrtab_hdr->sh_entsize = 0;
+ symstrtab_hdr->sh_link = 0;
+ symstrtab_hdr->sh_info = 0;
+ /* sh_offset is set just below. */
+ symstrtab_hdr->sh_addralign = 1;
+
+ off = _bfd_elf_assign_file_position_for_section (symstrtab_hdr, off, TRUE);
+ elf_tdata (abfd)->next_file_pos = off;
+
+ if (bfd_get_symcount (abfd) > 0)
+ {
+ if (bfd_seek (abfd, symstrtab_hdr->sh_offset, SEEK_SET) != 0
+ || ! _bfd_stringtab_emit (abfd, finfo.symstrtab))
+ return FALSE;
+ }
+
+ /* Adjust the relocs to have the correct symbol indices. */
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ if ((o->flags & SEC_RELOC) == 0)
+ continue;
+
+ elf_link_adjust_relocs (abfd, &elf_section_data (o)->rel_hdr,
+ elf_section_data (o)->rel_count,
+ elf_section_data (o)->rel_hashes);
+ if (elf_section_data (o)->rel_hdr2 != NULL)
+ elf_link_adjust_relocs (abfd, elf_section_data (o)->rel_hdr2,
+ elf_section_data (o)->rel_count2,
+ (elf_section_data (o)->rel_hashes
+ + elf_section_data (o)->rel_count));
+
+ /* Set the reloc_count field to 0 to prevent write_relocs from
+ trying to swap the relocs out itself. */
+ o->reloc_count = 0;
+ }
+
+ if (dynamic && info->combreloc && dynobj != NULL)
+ relativecount = elf_link_sort_relocs (abfd, info, &reldyn);
+
+ /* If we are linking against a dynamic object, or generating a
+ shared library, finish up the dynamic linking information. */
+ if (dynamic)
+ {
+ bfd_byte *dyncon, *dynconend;
+
+ /* Fix up .dynamic entries. */
+ o = bfd_get_section_by_name (dynobj, ".dynamic");
+ BFD_ASSERT (o != NULL);
+
+ dyncon = o->contents;
+ dynconend = o->contents + o->_raw_size;
+ for (; dyncon < dynconend; dyncon += bed->s->sizeof_dyn)
+ {
+ Elf_Internal_Dyn dyn;
+ const char *name;
+ unsigned int type;
+
+ bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
+
+ switch (dyn.d_tag)
+ {
+ default:
+ continue;
+ case DT_NULL:
+ if (relativecount > 0 && dyncon + bed->s->sizeof_dyn < dynconend)
+ {
+ switch (elf_section_data (reldyn)->this_hdr.sh_type)
+ {
+ case SHT_REL: dyn.d_tag = DT_RELCOUNT; break;
+ case SHT_RELA: dyn.d_tag = DT_RELACOUNT; break;
+ default: continue;
+ }
+ dyn.d_un.d_val = relativecount;
+ relativecount = 0;
+ break;
+ }
+ continue;
+
+ case DT_INIT:
+ name = info->init_function;
+ goto get_sym;
+ case DT_FINI:
+ name = info->fini_function;
+ get_sym:
+ {
+ struct elf_link_hash_entry *h;
+
+ h = elf_link_hash_lookup (elf_hash_table (info), name,
+ FALSE, FALSE, TRUE);
+ if (h != NULL
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak))
+ {
+ dyn.d_un.d_val = h->root.u.def.value;
+ o = h->root.u.def.section;
+ if (o->output_section != NULL)
+ dyn.d_un.d_val += (o->output_section->vma
+ + o->output_offset);
+ else
+ {
+ /* The symbol is imported from another shared
+ library and does not apply to this one. */
+ dyn.d_un.d_val = 0;
+ }
+ break;
+ }
+ }
+ continue;
+
+ case DT_PREINIT_ARRAYSZ:
+ name = ".preinit_array";
+ goto get_size;
+ case DT_INIT_ARRAYSZ:
+ name = ".init_array";
+ goto get_size;
+ case DT_FINI_ARRAYSZ:
+ name = ".fini_array";
+ get_size:
+ o = bfd_get_section_by_name (abfd, name);
+ if (o == NULL)
+ {
+ (*_bfd_error_handler)
+ (_("%s: could not find output section %s"),
+ bfd_get_filename (abfd), name);
+ goto error_return;
+ }
+ if (o->_raw_size == 0)
+ (*_bfd_error_handler)
+ (_("warning: %s section has zero size"), name);
+ dyn.d_un.d_val = o->_raw_size;
+ break;
+
+ case DT_PREINIT_ARRAY:
+ name = ".preinit_array";
+ goto get_vma;
+ case DT_INIT_ARRAY:
+ name = ".init_array";
+ goto get_vma;
+ case DT_FINI_ARRAY:
+ name = ".fini_array";
+ goto get_vma;
+
+ case DT_HASH:
+ name = ".hash";
+ goto get_vma;
+ case DT_STRTAB:
+ name = ".dynstr";
+ goto get_vma;
+ case DT_SYMTAB:
+ name = ".dynsym";
+ goto get_vma;
+ case DT_VERDEF:
+ name = ".gnu.version_d";
+ goto get_vma;
+ case DT_VERNEED:
+ name = ".gnu.version_r";
+ goto get_vma;
+ case DT_VERSYM:
+ name = ".gnu.version";
+ get_vma:
+ o = bfd_get_section_by_name (abfd, name);
+ if (o == NULL)
+ {
+ (*_bfd_error_handler)
+ (_("%s: could not find output section %s"),
+ bfd_get_filename (abfd), name);
+ goto error_return;
+ }
+ dyn.d_un.d_ptr = o->vma;
+ break;
+
+ case DT_REL:
+ case DT_RELA:
+ case DT_RELSZ:
+ case DT_RELASZ:
+ if (dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
+ type = SHT_REL;
+ else
+ type = SHT_RELA;
+ dyn.d_un.d_val = 0;
+ for (i = 1; i < elf_numsections (abfd); i++)
+ {
+ Elf_Internal_Shdr *hdr;
+
+ hdr = elf_elfsections (abfd)[i];
+ if (hdr->sh_type == type
+ && (hdr->sh_flags & SHF_ALLOC) != 0)
+ {
+ if (dyn.d_tag == DT_RELSZ || dyn.d_tag == DT_RELASZ)
+ dyn.d_un.d_val += hdr->sh_size;
+ else
+ {
+ if (dyn.d_un.d_val == 0
+ || hdr->sh_addr < dyn.d_un.d_val)
+ dyn.d_un.d_val = hdr->sh_addr;
+ }
+ }
+ }
+ break;
+ }
+ bed->s->swap_dyn_out (dynobj, &dyn, dyncon);
+ }
+ }
+
+ /* If we have created any dynamic sections, then output them. */
+ if (dynobj != NULL)
+ {
+ if (! (*bed->elf_backend_finish_dynamic_sections) (abfd, info))
+ goto error_return;
+
+ for (o = dynobj->sections; o != NULL; o = o->next)
+ {
+ if ((o->flags & SEC_HAS_CONTENTS) == 0
+ || o->_raw_size == 0
+ || o->output_section == bfd_abs_section_ptr)
+ continue;
+ if ((o->flags & SEC_LINKER_CREATED) == 0)
+ {
+ /* At this point, we are only interested in sections
+ created by _bfd_elf_link_create_dynamic_sections. */
+ continue;
+ }
+ if ((elf_section_data (o->output_section)->this_hdr.sh_type
+ != SHT_STRTAB)
+ || strcmp (bfd_get_section_name (abfd, o), ".dynstr") != 0)
+ {
+ if (! bfd_set_section_contents (abfd, o->output_section,
+ o->contents,
+ (file_ptr) o->output_offset,
+ o->_raw_size))
+ goto error_return;
+ }
+ else
+ {
+ /* The contents of the .dynstr section are actually in a
+ stringtab. */
+ off = elf_section_data (o->output_section)->this_hdr.sh_offset;
+ if (bfd_seek (abfd, off, SEEK_SET) != 0
+ || ! _bfd_elf_strtab_emit (abfd,
+ elf_hash_table (info)->dynstr))
+ goto error_return;
+ }
+ }
+ }
+
+ if (info->relocatable)
+ {
+ bfd_boolean failed = FALSE;
+
+ bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed);
+ if (failed)
+ goto error_return;
+ }
+
+ /* If we have optimized stabs strings, output them. */
+ if (elf_hash_table (info)->stab_info != NULL)
+ {
+ if (! _bfd_write_stab_strings (abfd, &elf_hash_table (info)->stab_info))
+ goto error_return;
+ }
+
+ if (info->eh_frame_hdr)
+ {
+ if (! _bfd_elf_write_section_eh_frame_hdr (abfd, info))
+ goto error_return;
+ }
+
+ if (finfo.symstrtab != NULL)
+ _bfd_stringtab_free (finfo.symstrtab);
+ if (finfo.contents != NULL)
+ free (finfo.contents);
+ if (finfo.external_relocs != NULL)
+ free (finfo.external_relocs);
+ if (finfo.internal_relocs != NULL)
+ free (finfo.internal_relocs);
+ if (finfo.external_syms != NULL)
+ free (finfo.external_syms);
+ if (finfo.locsym_shndx != NULL)
+ free (finfo.locsym_shndx);
+ if (finfo.internal_syms != NULL)
+ free (finfo.internal_syms);
+ if (finfo.indices != NULL)
+ free (finfo.indices);
+ if (finfo.sections != NULL)
+ free (finfo.sections);
+ if (finfo.symbuf != NULL)
+ free (finfo.symbuf);
+ if (finfo.symshndxbuf != NULL)
+ free (finfo.symshndxbuf);
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ if ((o->flags & SEC_RELOC) != 0
+ && elf_section_data (o)->rel_hashes != NULL)
+ free (elf_section_data (o)->rel_hashes);
+ }
+
+ elf_tdata (abfd)->linker = TRUE;
+
+ return TRUE;
+
+ error_return:
+ if (finfo.symstrtab != NULL)
+ _bfd_stringtab_free (finfo.symstrtab);
+ if (finfo.contents != NULL)
+ free (finfo.contents);
+ if (finfo.external_relocs != NULL)
+ free (finfo.external_relocs);
+ if (finfo.internal_relocs != NULL)
+ free (finfo.internal_relocs);
+ if (finfo.external_syms != NULL)
+ free (finfo.external_syms);
+ if (finfo.locsym_shndx != NULL)
+ free (finfo.locsym_shndx);
+ if (finfo.internal_syms != NULL)
+ free (finfo.internal_syms);
+ if (finfo.indices != NULL)
+ free (finfo.indices);
+ if (finfo.sections != NULL)
+ free (finfo.sections);
+ if (finfo.symbuf != NULL)
+ free (finfo.symbuf);
+ if (finfo.symshndxbuf != NULL)
+ free (finfo.symshndxbuf);
+ for (o = abfd->sections; o != NULL; o = o->next)
+ {
+ if ((o->flags & SEC_RELOC) != 0
+ && elf_section_data (o)->rel_hashes != NULL)
+ free (elf_section_data (o)->rel_hashes);
+ }
+
+ return FALSE;
+}
+\f
+/* Garbage collect unused sections. */
+
+/* The mark phase of garbage collection. For a given section, mark
+ it and any sections in this section's group, and all the sections
+ which define symbols to which it refers. */
+
+typedef asection * (*gc_mark_hook_fn)
+ (asection *, struct bfd_link_info *, Elf_Internal_Rela *,
+ struct elf_link_hash_entry *, Elf_Internal_Sym *);
+
+static bfd_boolean
+elf_gc_mark (struct bfd_link_info *info,
+ asection *sec,
+ gc_mark_hook_fn gc_mark_hook)
+{
+ bfd_boolean ret;
+ asection *group_sec;
+
+ sec->gc_mark = 1;
+
+ /* Mark all the sections in the group. */
+ group_sec = elf_section_data (sec)->next_in_group;
+ if (group_sec && !group_sec->gc_mark)
+ if (!elf_gc_mark (info, group_sec, gc_mark_hook))
+ return FALSE;
+
+ /* Look through the section relocs. */
+ ret = TRUE;
+ if ((sec->flags & SEC_RELOC) != 0 && sec->reloc_count > 0)
+ {
+ Elf_Internal_Rela *relstart, *rel, *relend;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ size_t nlocsyms;
+ size_t extsymoff;
+ bfd *input_bfd = sec->owner;
+ const struct elf_backend_data *bed = get_elf_backend_data (input_bfd);
+ Elf_Internal_Sym *isym = NULL;
+ int r_sym_shift;
+
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (input_bfd);
+
+ /* Read the local symbols. */
+ if (elf_bad_symtab (input_bfd))
+ {
+ nlocsyms = symtab_hdr->sh_size / bed->s->sizeof_sym;
+ extsymoff = 0;
+ }
+ else
+ extsymoff = nlocsyms = symtab_hdr->sh_info;
+
+ isym = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (isym == NULL && nlocsyms != 0)
+ {
+ isym = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, nlocsyms, 0,
+ NULL, NULL, NULL);
+ if (isym == NULL)
+ return FALSE;
+ }
+
+ /* Read the relocations. */
+ relstart = _bfd_elf_link_read_relocs (input_bfd, sec, NULL, NULL,
+ info->keep_memory);
+ if (relstart == NULL)
+ {
+ ret = FALSE;
+ goto out1;
+ }
+ relend = relstart + sec->reloc_count * bed->s->int_rels_per_ext_rel;
+
+ if (bed->s->arch_size == 32)
+ r_sym_shift = 8;
+ else
+ r_sym_shift = 32;
+
+ for (rel = relstart; rel < relend; rel++)
+ {
+ unsigned long r_symndx;
+ asection *rsec;
+ struct elf_link_hash_entry *h;
+
+ r_symndx = rel->r_info >> r_sym_shift;
+ if (r_symndx == 0)
+ continue;
+
+ if (r_symndx >= nlocsyms
+ || ELF_ST_BIND (isym[r_symndx].st_info) != STB_LOCAL)
+ {
+ h = sym_hashes[r_symndx - extsymoff];
+ rsec = (*gc_mark_hook) (sec, info, rel, h, NULL);
+ }
+ else
+ {
+ rsec = (*gc_mark_hook) (sec, info, rel, NULL, &isym[r_symndx]);
+ }
+
+ if (rsec && !rsec->gc_mark)
+ {
+ if (bfd_get_flavour (rsec->owner) != bfd_target_elf_flavour)
+ rsec->gc_mark = 1;
+ else if (!elf_gc_mark (info, rsec, gc_mark_hook))
+ {
+ ret = FALSE;
+ goto out2;
+ }
+ }
+ }
+
+ out2:
+ if (elf_section_data (sec)->relocs != relstart)
+ free (relstart);
+ out1:
+ if (isym != NULL && symtab_hdr->contents != (unsigned char *) isym)
+ {
+ if (! info->keep_memory)
+ free (isym);
+ else
+ symtab_hdr->contents = (unsigned char *) isym;
+ }
+ }
+
+ return ret;
+}
+
+/* Sweep symbols in swept sections. Called via elf_link_hash_traverse. */
+
+static bfd_boolean
+elf_gc_sweep_symbol (struct elf_link_hash_entry *h, void *idxptr)
+{
+ int *idx = idxptr;
+
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ if (h->dynindx != -1
+ && ((h->root.type != bfd_link_hash_defined
+ && h->root.type != bfd_link_hash_defweak)
+ || h->root.u.def.section->gc_mark))
+ h->dynindx = (*idx)++;
+
+ return TRUE;
+}
+
+/* The sweep phase of garbage collection. Remove all garbage sections. */
+
+typedef bfd_boolean (*gc_sweep_hook_fn)
+ (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
+
+static bfd_boolean
+elf_gc_sweep (struct bfd_link_info *info, gc_sweep_hook_fn gc_sweep_hook)
+{
+ bfd *sub;
+
+ for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+ {
+ asection *o;
+
+ if (bfd_get_flavour (sub) != bfd_target_elf_flavour)
+ continue;
+
+ for (o = sub->sections; o != NULL; o = o->next)
+ {
+ /* Keep special sections. Keep .debug sections. */
+ if ((o->flags & SEC_LINKER_CREATED)
+ || (o->flags & SEC_DEBUGGING))
+ o->gc_mark = 1;
+
+ if (o->gc_mark)
+ continue;
+
+ /* Skip sweeping sections already excluded. */
+ if (o->flags & SEC_EXCLUDE)
+ continue;
+
+ /* Since this is early in the link process, it is simple
+ to remove a section from the output. */
+ o->flags |= SEC_EXCLUDE;
+
+ /* But we also have to update some of the relocation
+ info we collected before. */
+ if (gc_sweep_hook
+ && (o->flags & SEC_RELOC) && o->reloc_count > 0)
+ {
+ Elf_Internal_Rela *internal_relocs;
+ bfd_boolean r;
+
+ internal_relocs
+ = _bfd_elf_link_read_relocs (o->owner, o, NULL, NULL,
+ info->keep_memory);
+ if (internal_relocs == NULL)
+ return FALSE;
+
+ r = (*gc_sweep_hook) (o->owner, info, o, internal_relocs);
+
+ if (elf_section_data (o)->relocs != internal_relocs)
+ free (internal_relocs);
+
+ if (!r)
+ return FALSE;
+ }
+ }
+ }
+
+ /* Remove the symbols that were in the swept sections from the dynamic
+ symbol table. GCFIXME: Anyone know how to get them out of the
+ static symbol table as well? */
+ {
+ int i = 0;
+
+ elf_link_hash_traverse (elf_hash_table (info), elf_gc_sweep_symbol, &i);
+
+ elf_hash_table (info)->dynsymcount = i;
+ }
+
+ return TRUE;
+}
+
+/* Propagate collected vtable information. This is called through
+ elf_link_hash_traverse. */
+
+static bfd_boolean
+elf_gc_propagate_vtable_entries_used (struct elf_link_hash_entry *h, void *okp)
+{
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ /* Those that are not vtables. */
+ if (h->vtable_parent == NULL)
+ return TRUE;
+
+ /* Those vtables that do not have parents, we cannot merge. */
+ if (h->vtable_parent == (struct elf_link_hash_entry *) -1)
+ return TRUE;
+
+ /* If we've already been done, exit. */
+ if (h->vtable_entries_used && h->vtable_entries_used[-1])
+ return TRUE;
+
+ /* Make sure the parent's table is up to date. */
+ elf_gc_propagate_vtable_entries_used (h->vtable_parent, okp);
+
+ if (h->vtable_entries_used == NULL)
+ {
+ /* None of this table's entries were referenced. Re-use the
+ parent's table. */
+ h->vtable_entries_used = h->vtable_parent->vtable_entries_used;
+ h->vtable_entries_size = h->vtable_parent->vtable_entries_size;
+ }
+ else
+ {
+ size_t n;
+ bfd_boolean *cu, *pu;
+
+ /* Or the parent's entries into ours. */
+ cu = h->vtable_entries_used;
+ cu[-1] = TRUE;
+ pu = h->vtable_parent->vtable_entries_used;
+ if (pu != NULL)
+ {
+ const struct elf_backend_data *bed;
+ unsigned int log_file_align;
+
+ bed = get_elf_backend_data (h->root.u.def.section->owner);
+ log_file_align = bed->s->log_file_align;
+ n = h->vtable_parent->vtable_entries_size >> log_file_align;
+ while (n--)
+ {
+ if (*pu)
+ *cu = TRUE;
+ pu++;
+ cu++;
+ }
+ }
+ }
+
+ return TRUE;
+}
+
+static bfd_boolean
+elf_gc_smash_unused_vtentry_relocs (struct elf_link_hash_entry *h, void *okp)
+{
+ asection *sec;
+ bfd_vma hstart, hend;
+ Elf_Internal_Rela *relstart, *relend, *rel;
+ const struct elf_backend_data *bed;
+ unsigned int log_file_align;
+
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ /* Take care of both those symbols that do not describe vtables as
+ well as those that are not loaded. */
+ if (h->vtable_parent == NULL)
+ return TRUE;
+
+ BFD_ASSERT (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak);
+
+ sec = h->root.u.def.section;
+ hstart = h->root.u.def.value;
+ hend = hstart + h->size;
+
+ relstart = _bfd_elf_link_read_relocs (sec->owner, sec, NULL, NULL, TRUE);
+ if (!relstart)
+ return *(bfd_boolean *) okp = FALSE;
+ bed = get_elf_backend_data (sec->owner);
+ log_file_align = bed->s->log_file_align;
+
+ relend = relstart + sec->reloc_count * bed->s->int_rels_per_ext_rel;
+
+ for (rel = relstart; rel < relend; ++rel)
+ if (rel->r_offset >= hstart && rel->r_offset < hend)
+ {
+ /* If the entry is in use, do nothing. */
+ if (h->vtable_entries_used
+ && (rel->r_offset - hstart) < h->vtable_entries_size)
+ {
+ bfd_vma entry = (rel->r_offset - hstart) >> log_file_align;
+ if (h->vtable_entries_used[entry])
+ continue;
+ }
+ /* Otherwise, kill it. */
+ rel->r_offset = rel->r_info = rel->r_addend = 0;
+ }
+
+ return TRUE;
+}
+
+/* Do mark and sweep of unused sections. */
+
+bfd_boolean
+bfd_elf_gc_sections (bfd *abfd, struct bfd_link_info *info)
+{
+ bfd_boolean ok = TRUE;
+ bfd *sub;
+ asection * (*gc_mark_hook)
+ (asection *, struct bfd_link_info *, Elf_Internal_Rela *,
+ struct elf_link_hash_entry *h, Elf_Internal_Sym *);
+
+ if (!get_elf_backend_data (abfd)->can_gc_sections
+ || info->relocatable
+ || info->emitrelocations
+ || !is_elf_hash_table (info->hash)
+ || elf_hash_table (info)->dynamic_sections_created)
+ {
+ (*_bfd_error_handler)(_("Warning: gc-sections option ignored"));
+ return TRUE;
+ }
+
+ /* Apply transitive closure to the vtable entry usage info. */
+ elf_link_hash_traverse (elf_hash_table (info),
+ elf_gc_propagate_vtable_entries_used,
+ &ok);
+ if (!ok)
+ return FALSE;
+
+ /* Kill the vtable relocations that were not used. */
+ elf_link_hash_traverse (elf_hash_table (info),
+ elf_gc_smash_unused_vtentry_relocs,
+ &ok);
+ if (!ok)
+ return FALSE;
+
+ /* Grovel through relocs to find out who stays ... */
+
+ gc_mark_hook = get_elf_backend_data (abfd)->gc_mark_hook;
+ for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+ {
+ asection *o;
+
+ if (bfd_get_flavour (sub) != bfd_target_elf_flavour)
+ continue;
+
+ for (o = sub->sections; o != NULL; o = o->next)
+ {
+ if (o->flags & SEC_KEEP)
+ if (!elf_gc_mark (info, o, gc_mark_hook))
+ return FALSE;
+ }
+ }
+
+ /* ... and mark SEC_EXCLUDE for those that go. */
+ if (!elf_gc_sweep (info, get_elf_backend_data (abfd)->gc_sweep_hook))
+ return FALSE;
+
+ return TRUE;
+}
+\f
+/* Called from check_relocs to record the existence of a VTINHERIT reloc. */
+
+bfd_boolean
+bfd_elf_gc_record_vtinherit (bfd *abfd,
+ asection *sec,
+ struct elf_link_hash_entry *h,
+ bfd_vma offset)
+{
+ struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
+ struct elf_link_hash_entry **search, *child;
+ bfd_size_type extsymcount;
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+
+ /* The sh_info field of the symtab header tells us where the
+ external symbols start. We don't care about the local symbols at
+ this point. */
+ extsymcount = elf_tdata (abfd)->symtab_hdr.sh_size / bed->s->sizeof_sym;
+ if (!elf_bad_symtab (abfd))
+ extsymcount -= elf_tdata (abfd)->symtab_hdr.sh_info;
+
+ sym_hashes = elf_sym_hashes (abfd);
+ sym_hashes_end = sym_hashes + extsymcount;
+
+ /* Hunt down the child symbol, which is in this section at the same
+ offset as the relocation. */
+ for (search = sym_hashes; search != sym_hashes_end; ++search)
+ {
+ if ((child = *search) != NULL
+ && (child->root.type == bfd_link_hash_defined
+ || child->root.type == bfd_link_hash_defweak)
+ && child->root.u.def.section == sec
+ && child->root.u.def.value == offset)
+ goto win;
+ }
+
+ (*_bfd_error_handler) ("%s: %s+%lu: No symbol found for INHERIT",
+ bfd_archive_filename (abfd), sec->name,
+ (unsigned long) offset);
+ bfd_set_error (bfd_error_invalid_operation);
+ return FALSE;
+
+ win:
+ if (!h)
+ {
+ /* This *should* only be the absolute section. It could potentially
+ be that someone has defined a non-global vtable though, which
+ would be bad. It isn't worth paging in the local symbols to be
+ sure though; that case should simply be handled by the assembler. */
+
+ child->vtable_parent = (struct elf_link_hash_entry *) -1;
+ }
+ else
+ child->vtable_parent = h;
+
+ return TRUE;
+}
+
+/* Called from check_relocs to record the existence of a VTENTRY reloc. */
+
+bfd_boolean
+bfd_elf_gc_record_vtentry (bfd *abfd ATTRIBUTE_UNUSED,
+ asection *sec ATTRIBUTE_UNUSED,
+ struct elf_link_hash_entry *h,
+ bfd_vma addend)
+{
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ unsigned int log_file_align = bed->s->log_file_align;
+
+ if (addend >= h->vtable_entries_size)
+ {
+ size_t size, bytes, file_align;
+ bfd_boolean *ptr = h->vtable_entries_used;
+
+ /* While the symbol is undefined, we have to be prepared to handle
+ a zero size. */
+ file_align = 1 << log_file_align;
+ if (h->root.type == bfd_link_hash_undefined)
+ size = addend + file_align;
+ else
+ {
+ size = h->size;
+ if (addend >= size)
+ {
+ /* Oops! We've got a reference past the defined end of
+ the table. This is probably a bug -- shall we warn? */
+ size = addend + file_align;
+ }
+ }
+ size = (size + file_align - 1) & -file_align;
+
+ /* Allocate one extra entry for use as a "done" flag for the
+ consolidation pass. */
+ bytes = ((size >> log_file_align) + 1) * sizeof (bfd_boolean);
+
+ if (ptr)
+ {
+ ptr = bfd_realloc (ptr - 1, bytes);
+
+ if (ptr != NULL)
+ {
+ size_t oldbytes;
+
+ oldbytes = (((h->vtable_entries_size >> log_file_align) + 1)
+ * sizeof (bfd_boolean));
+ memset (((char *) ptr) + oldbytes, 0, bytes - oldbytes);
+ }
+ }
+ else
+ ptr = bfd_zmalloc (bytes);
+
+ if (ptr == NULL)
+ return FALSE;
+
+ /* And arrange for that done flag to be at index -1. */
+ h->vtable_entries_used = ptr + 1;
+ h->vtable_entries_size = size;
+ }
+
+ h->vtable_entries_used[addend >> log_file_align] = TRUE;
+
+ return TRUE;
+}
+
+struct alloc_got_off_arg {
+ bfd_vma gotoff;
+ unsigned int got_elt_size;
+};
+
+/* We need a special top-level link routine to convert got reference counts
+ to real got offsets. */
+
+static bfd_boolean
+elf_gc_allocate_got_offsets (struct elf_link_hash_entry *h, void *arg)
+{
+ struct alloc_got_off_arg *gofarg = arg;
+
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ if (h->got.refcount > 0)
+ {
+ h->got.offset = gofarg->gotoff;
+ gofarg->gotoff += gofarg->got_elt_size;
+ }
+ else
+ h->got.offset = (bfd_vma) -1;
+
+ return TRUE;
+}
+
+/* And an accompanying bit to work out final got entry offsets once
+ we're done. Should be called from final_link. */
+
+bfd_boolean
+bfd_elf_gc_common_finalize_got_offsets (bfd *abfd,
+ struct bfd_link_info *info)
+{
+ bfd *i;
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ bfd_vma gotoff;
+ unsigned int got_elt_size = bed->s->arch_size / 8;
+ struct alloc_got_off_arg gofarg;
+
+ if (! is_elf_hash_table (info->hash))
+ return FALSE;
+
+ /* The GOT offset is relative to the .got section, but the GOT header is
+ put into the .got.plt section, if the backend uses it. */
+ if (bed->want_got_plt)
+ gotoff = 0;
+ else
+ gotoff = bed->got_header_size;
+
+ /* Do the local .got entries first. */
+ for (i = info->input_bfds; i; i = i->link_next)
+ {
+ bfd_signed_vma *local_got;
+ bfd_size_type j, locsymcount;
+ Elf_Internal_Shdr *symtab_hdr;
+
+ if (bfd_get_flavour (i) != bfd_target_elf_flavour)
+ continue;
+
+ local_got = elf_local_got_refcounts (i);
+ if (!local_got)
+ continue;
+
+ symtab_hdr = &elf_tdata (i)->symtab_hdr;
+ if (elf_bad_symtab (i))
+ locsymcount = symtab_hdr->sh_size / bed->s->sizeof_sym;
+ else
+ locsymcount = symtab_hdr->sh_info;
+
+ for (j = 0; j < locsymcount; ++j)
+ {
+ if (local_got[j] > 0)
+ {
+ local_got[j] = gotoff;
+ gotoff += got_elt_size;
+ }
+ else
+ local_got[j] = (bfd_vma) -1;
+ }
+ }
+
+ /* Then the global .got entries. .plt refcounts are handled by
+ adjust_dynamic_symbol */
+ gofarg.gotoff = gotoff;
+ gofarg.got_elt_size = got_elt_size;
+ elf_link_hash_traverse (elf_hash_table (info),
+ elf_gc_allocate_got_offsets,
+ &gofarg);
+ return TRUE;
+}
+
+/* Many folk need no more in the way of final link than this, once
+ got entry reference counting is enabled. */
+
+bfd_boolean
+bfd_elf_gc_common_final_link (bfd *abfd, struct bfd_link_info *info)
+{
+ if (!bfd_elf_gc_common_finalize_got_offsets (abfd, info))
+ return FALSE;
+
+ /* Invoke the regular ELF backend linker to do all the work. */
+ return bfd_elf_final_link (abfd, info);
+}
+
+bfd_boolean
+bfd_elf_reloc_symbol_deleted_p (bfd_vma offset, void *cookie)
+{
+ struct elf_reloc_cookie *rcookie = cookie;
+
+ if (rcookie->bad_symtab)
+ rcookie->rel = rcookie->rels;
+
+ for (; rcookie->rel < rcookie->relend; rcookie->rel++)
+ {
+ unsigned long r_symndx;
+
+ if (! rcookie->bad_symtab)
+ if (rcookie->rel->r_offset > offset)
+ return FALSE;
+ if (rcookie->rel->r_offset != offset)
+ continue;
+
+ r_symndx = rcookie->rel->r_info >> rcookie->r_sym_shift;
+ if (r_symndx == SHN_UNDEF)
+ return TRUE;
+
+ if (r_symndx >= rcookie->locsymcount
+ || ELF_ST_BIND (rcookie->locsyms[r_symndx].st_info) != STB_LOCAL)
+ {
+ struct elf_link_hash_entry *h;
+
+ h = rcookie->sym_hashes[r_symndx - rcookie->extsymoff];
+
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ if ((h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && elf_discarded_section (h->root.u.def.section))
+ return TRUE;
+ else
+ return FALSE;
+ }
+ else
+ {
+ /* It's not a relocation against a global symbol,
+ but it could be a relocation against a local
+ symbol for a discarded section. */
+ asection *isec;
+ Elf_Internal_Sym *isym;
+
+ /* Need to: get the symbol; get the section. */
+ isym = &rcookie->locsyms[r_symndx];
+ if (isym->st_shndx < SHN_LORESERVE || isym->st_shndx > SHN_HIRESERVE)
+ {
+ isec = bfd_section_from_elf_index (rcookie->abfd, isym->st_shndx);
+ if (isec != NULL && elf_discarded_section (isec))
+ return TRUE;
+ }
+ }
+ return FALSE;
+ }
+ return FALSE;
+}
+
+/* Discard unneeded references to discarded sections.
+ Returns TRUE if any section's size was changed. */
+/* This function assumes that the relocations are in sorted order,
+ which is true for all known assemblers. */
+
+bfd_boolean
+bfd_elf_discard_info (bfd *output_bfd, struct bfd_link_info *info)
+{
+ struct elf_reloc_cookie cookie;
+ asection *stab, *eh;
+ Elf_Internal_Shdr *symtab_hdr;
+ const struct elf_backend_data *bed;
+ bfd *abfd;
+ unsigned int count;
+ bfd_boolean ret = FALSE;
+
+ if (info->traditional_format
+ || !is_elf_hash_table (info->hash))
+ return FALSE;
+
+ for (abfd = info->input_bfds; abfd != NULL; abfd = abfd->link_next)
+ {
+ if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
+ continue;
+
+ bed = get_elf_backend_data (abfd);
+
+ if ((abfd->flags & DYNAMIC) != 0)
+ continue;
+
+ eh = bfd_get_section_by_name (abfd, ".eh_frame");
+ if (info->relocatable
+ || (eh != NULL
+ && (eh->_raw_size == 0
+ || bfd_is_abs_section (eh->output_section))))
+ eh = NULL;
+
+ stab = bfd_get_section_by_name (abfd, ".stab");
+ if (stab != NULL
+ && (stab->_raw_size == 0
+ || bfd_is_abs_section (stab->output_section)
+ || stab->sec_info_type != ELF_INFO_TYPE_STABS))
+ stab = NULL;
+
+ if (stab == NULL
+ && eh == NULL
+ && bed->elf_backend_discard_info == NULL)
+ continue;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ cookie.abfd = abfd;
+ cookie.sym_hashes = elf_sym_hashes (abfd);
+ cookie.bad_symtab = elf_bad_symtab (abfd);
+ if (cookie.bad_symtab)
+ {
+ cookie.locsymcount = symtab_hdr->sh_size / bed->s->sizeof_sym;
+ cookie.extsymoff = 0;
+ }
+ else
+ {
+ cookie.locsymcount = symtab_hdr->sh_info;
+ cookie.extsymoff = symtab_hdr->sh_info;
+ }
+
+ if (bed->s->arch_size == 32)
+ cookie.r_sym_shift = 8;
+ else
+ cookie.r_sym_shift = 32;
+
+ cookie.locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (cookie.locsyms == NULL && cookie.locsymcount != 0)
+ {
+ cookie.locsyms = bfd_elf_get_elf_syms (abfd, symtab_hdr,
+ cookie.locsymcount, 0,
+ NULL, NULL, NULL);
+ if (cookie.locsyms == NULL)
+ return FALSE;
+ }
+
+ if (stab != NULL)
+ {
+ cookie.rels = NULL;
+ count = stab->reloc_count;
+ if (count != 0)
+ cookie.rels = _bfd_elf_link_read_relocs (abfd, stab, NULL, NULL,
+ info->keep_memory);
+ if (cookie.rels != NULL)
+ {
+ cookie.rel = cookie.rels;
+ cookie.relend = cookie.rels;
+ cookie.relend += count * bed->s->int_rels_per_ext_rel;
+ if (_bfd_discard_section_stabs (abfd, stab,
+ elf_section_data (stab)->sec_info,
+ bfd_elf_reloc_symbol_deleted_p,
+ &cookie))
+ ret = TRUE;
+ if (elf_section_data (stab)->relocs != cookie.rels)
+ free (cookie.rels);
+ }
+ }
+
+ if (eh != NULL)
+ {
+ cookie.rels = NULL;
+ count = eh->reloc_count;
+ if (count != 0)
+ cookie.rels = _bfd_elf_link_read_relocs (abfd, eh, NULL, NULL,
+ info->keep_memory);
+ cookie.rel = cookie.rels;
+ cookie.relend = cookie.rels;
+ if (cookie.rels != NULL)
+ cookie.relend += count * bed->s->int_rels_per_ext_rel;
+
+ if (_bfd_elf_discard_section_eh_frame (abfd, info, eh,
+ bfd_elf_reloc_symbol_deleted_p,
+ &cookie))
+ ret = TRUE;
+
+ if (cookie.rels != NULL
+ && elf_section_data (eh)->relocs != cookie.rels)
+ free (cookie.rels);
+ }
+
+ if (bed->elf_backend_discard_info != NULL
+ && (*bed->elf_backend_discard_info) (abfd, &cookie, info))
+ ret = TRUE;
+
+ if (cookie.locsyms != NULL
+ && symtab_hdr->contents != (unsigned char *) cookie.locsyms)
+ {
+ if (! info->keep_memory)
+ free (cookie.locsyms);
+ else
+ symtab_hdr->contents = (unsigned char *) cookie.locsyms;
+ }
+ }
+
+ if (info->eh_frame_hdr
+ && !info->relocatable
+ && _bfd_elf_discard_section_eh_frame_hdr (output_bfd, info))
+ ret = TRUE;
+
+ return ret;
+}
projects / deliverable / binutils-gdb.git / blobdiff