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Diffstat (limited to 'bfd/elflink.c')
-rw-r--r--bfd/elflink.c86
1 files changed, 81 insertions, 5 deletions
diff --git a/bfd/elflink.c b/bfd/elflink.c
index 1df583f..63cac8e 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -712,6 +712,8 @@ _bfd_elf_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info,
asection *p)
{
+ struct elf_link_hash_table *htab;
+
switch (elf_section_data (p)->this_hdr.sh_type)
{
case SHT_PROGBITS:
@@ -719,15 +721,21 @@ _bfd_elf_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
/* If sh_type is yet undecided, assume it could be
SHT_PROGBITS/SHT_NOBITS. */
case SHT_NULL:
+ htab = elf_hash_table (info);
+ if (p == htab->tls_sec)
+ return FALSE;
+
+ if (htab->text_index_section != NULL)
+ return p != htab->text_index_section && p != htab->data_index_section;
+
if (strcmp (p->name, ".got") == 0
|| strcmp (p->name, ".got.plt") == 0
|| strcmp (p->name, ".plt") == 0)
{
asection *ip;
- bfd *dynobj = elf_hash_table (info)->dynobj;
- if (dynobj != NULL
- && (ip = bfd_get_section_by_name (dynobj, p->name)) != NULL
+ if (htab->dynobj != NULL
+ && (ip = bfd_get_section_by_name (htab->dynobj, p->name)) != NULL
&& (ip->flags & SEC_LINKER_CREATED)
&& ip->output_section == p)
return TRUE;
@@ -763,6 +771,8 @@ _bfd_elf_link_renumber_dynsyms (bfd *output_bfd,
&& (p->flags & SEC_ALLOC) != 0
&& !(*bed->elf_backend_omit_section_dynsym) (output_bfd, info, p))
elf_section_data (p)->dynindx = ++dynsymcount;
+ else
+ elf_section_data (p)->dynindx = 0;
}
*section_sym_count = dynsymcount;
@@ -5932,16 +5942,65 @@ bfd_elf_size_dynamic_sections (bfd *output_bfd,
return TRUE;
}
+/* Find the first non-excluded output section. We'll use its
+ section symbol for some emitted relocs. */
+void
+_bfd_elf_init_1_index_section (bfd *output_bfd, struct bfd_link_info *info)
+{
+ asection *s;
+
+ for (s = output_bfd->sections; s != NULL; s = s->next)
+ if ((s->flags & (SEC_EXCLUDE | SEC_ALLOC)) == SEC_ALLOC
+ && !_bfd_elf_link_omit_section_dynsym (output_bfd, info, s))
+ {
+ elf_hash_table (info)->text_index_section = s;
+ break;
+ }
+}
+
+/* Find two non-excluded output sections, one for code, one for data.
+ We'll use their section symbols for some emitted relocs. */
+void
+_bfd_elf_init_2_index_sections (bfd *output_bfd, struct bfd_link_info *info)
+{
+ asection *s;
+
+ for (s = output_bfd->sections; s != NULL; s = s->next)
+ if (((s->flags & (SEC_EXCLUDE | SEC_ALLOC | SEC_READONLY))
+ == (SEC_ALLOC | SEC_READONLY))
+ && !_bfd_elf_link_omit_section_dynsym (output_bfd, info, s))
+ {
+ elf_hash_table (info)->text_index_section = s;
+ break;
+ }
+
+ for (s = output_bfd->sections; s != NULL; s = s->next)
+ if (((s->flags & (SEC_EXCLUDE | SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
+ && !_bfd_elf_link_omit_section_dynsym (output_bfd, info, s))
+ {
+ elf_hash_table (info)->data_index_section = s;
+ break;
+ }
+
+ if (elf_hash_table (info)->text_index_section == NULL)
+ elf_hash_table (info)->text_index_section
+ = elf_hash_table (info)->data_index_section;
+}
+
bfd_boolean
bfd_elf_size_dynsym_hash_dynstr (bfd *output_bfd, struct bfd_link_info *info)
{
+ const struct elf_backend_data *bed;
+
if (!is_elf_hash_table (info->hash))
return TRUE;
+ bed = get_elf_backend_data (output_bfd);
+ (*bed->elf_backend_init_index_section) (output_bfd, info);
+
if (elf_hash_table (info)->dynamic_sections_created)
{
bfd *dynobj;
- const struct elf_backend_data *bed;
asection *s;
bfd_size_type dynsymcount;
unsigned long section_sym_count;
@@ -5980,7 +6039,6 @@ bfd_elf_size_dynsym_hash_dynstr (bfd *output_bfd, struct bfd_link_info *info)
section as we went along in elf_link_add_object_symbols. */
s = bfd_get_section_by_name (dynobj, ".dynsym");
BFD_ASSERT (s != NULL);
- bed = get_elf_backend_data (output_bfd);
s->size = dynsymcount * bed->s->sizeof_sym;
if (dynsymcount != 0)
@@ -7769,6 +7827,24 @@ elf_link_input_bfd (struct elf_final_link_info *finfo, bfd *input_bfd)
if (!bfd_is_abs_section (osec))
{
r_symndx = osec->target_index;
+ if (r_symndx == 0)
+ {
+ struct elf_link_hash_table *htab;
+ asection *oi;
+
+ htab = elf_hash_table (finfo->info);
+ oi = htab->text_index_section;
+ if ((osec->flags & SEC_READONLY) == 0
+ && htab->data_index_section != NULL)
+ oi = htab->data_index_section;
+
+ if (oi != NULL)
+ {
+ irela->r_addend += osec->vma - oi->vma;
+ r_symndx = oi->target_index;
+ }
+ }
+
BFD_ASSERT (r_symndx != 0);
}
}