|| (EH)->has_non_got_reloc \
|| !(INFO)->dynamic_undefined_weak))))
+/* Should copy relocation be generated for a symbol. Don't generate
+ copy relocation against a protected symbol defined in a shared
+ object with GNU_PROPERTY_NO_COPY_ON_PROTECTED. */
+#define SYMBOL_NO_COPYRELOC(INFO, EH) \
+ ((EH)->def_protected \
+ && ((EH)->elf.root.type == bfd_link_hash_defined \
+ || (EH)->elf.root.type == bfd_link_hash_defweak) \
+ && elf_has_no_copy_on_protected ((EH)->elf.root.u.def.section->owner) \
+ && ((EH)->elf.root.u.def.section->owner->flags & DYNAMIC) != 0 \
+ && ((EH)->elf.root.u.def.section->flags & SEC_CODE) == 0)
+
+
/* i386 ELF linker hash entry. */
struct elf_i386_link_hash_entry
/* Don't call finish_dynamic_symbol on this symbol. */
unsigned int no_finish_dynamic_symbol : 1;
- /* TRUE if symbol symbol is __tls_get_addr. */
+ /* TRUE if symbol is __tls_get_addr. */
unsigned int tls_get_addr : 1;
+ /* TRUE if symbol is defined as a protected symbol. */
+ unsigned int def_protected : 1;
+
/* Reference count of C/C++ function pointer relocations in read-write
section which can be resolved at run-time. */
bfd_signed_vma func_pointer_refcount;
eh->has_non_got_reloc = 0;
eh->no_finish_dynamic_symbol = 0;
eh->tls_get_addr = 0;
+ eh->def_protected = 0;
eh->func_pointer_refcount = 0;
eh->plt_got.offset = (bfd_vma) -1;
eh->tlsdesc_got = (bfd_vma) -1;
the link may change h->type. So fix it now. */
h->plt.offset = (bfd_vma) -1;
+ eh = (struct elf_i386_link_hash_entry *) h;
+
/* If this is a weak symbol, and there is a real definition, the
processor independent code will have arranged for us to see the
real definition first, and we can just use the same value. */
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
h->root.u.def.section = h->u.weakdef->root.u.def.section;
h->root.u.def.value = h->u.weakdef->root.u.def.value;
- if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
+ if (ELIMINATE_COPY_RELOCS
+ || info->nocopyreloc
+ || SYMBOL_NO_COPYRELOC (info, eh))
h->non_got_ref = h->u.weakdef->non_got_ref;
return TRUE;
}
/* If there are no references to this symbol that do not use the
GOT nor R_386_GOTOFF relocation, we don't need to generate a copy
reloc. */
- eh = (struct elf_i386_link_hash_entry *) h;
if (!h->non_got_ref && !eh->gotoff_ref)
return TRUE;
/* If -z nocopyreloc was given, we won't generate them either. */
- if (info->nocopyreloc)
+ if (info->nocopyreloc || SYMBOL_NO_COPYRELOC (info, eh))
{
h->non_got_ref = 0;
return TRUE;
unsigned int plt_alignment, features;
struct elf_i386_link_hash_table *htab;
bfd *pbfd;
+ bfd *ebfd = NULL;
+ elf_property *prop;
features = 0;
if (info->ibt)
features = GNU_PROPERTY_X86_FEATURE_1_IBT;
if (info->shstk)
features |= GNU_PROPERTY_X86_FEATURE_1_SHSTK;
- if (features)
+
+ /* Find a normal input file with GNU property note. */
+ for (pbfd = info->input_bfds;
+ pbfd != NULL;
+ pbfd = pbfd->link.next)
+ if (bfd_get_flavour (pbfd) == bfd_target_elf_flavour
+ && bfd_count_sections (pbfd) != 0)
+ {
+ ebfd = pbfd;
+
+ if (elf_properties (pbfd) != NULL)
+ break;
+ }
+
+ if (ebfd != NULL && features)
{
- /* Turn on GNU_PROPERTY_X86_FEATURE_1_IBT and
+ /* If features is set, add GNU_PROPERTY_X86_FEATURE_1_IBT and
GNU_PROPERTY_X86_FEATURE_1_SHSTK. */
- bfd *ebfd = NULL;
- elf_property *prop;
-
- for (pbfd = info->input_bfds;
- pbfd != NULL;
- pbfd = pbfd->link.next)
- if (bfd_get_flavour (pbfd) == bfd_target_elf_flavour
- && bfd_count_sections (pbfd) != 0)
- {
- ebfd = pbfd;
-
- if (elf_properties (pbfd) != NULL)
- {
- /* Find a normal input file with GNU property note. */
- prop = _bfd_elf_get_property (pbfd,
- GNU_PROPERTY_X86_FEATURE_1_AND,
- 4);
- /* Add GNU_PROPERTY_X86_FEATURE_1_IBT and
- GNU_PROPERTY_X86_FEATURE_1_SHSTK. */
- prop->u.number |= features;
- prop->pr_kind = property_number;
- break;
- }
- }
+ prop = _bfd_elf_get_property (ebfd,
+ GNU_PROPERTY_X86_FEATURE_1_AND,
+ 4);
+ prop->u.number |= features;
+ prop->pr_kind = property_number;
- if (pbfd == NULL && ebfd != NULL)
+ /* Create the GNU property note section if needed. */
+ if (pbfd == NULL)
{
- /* Create GNU_PROPERTY_X86_FEATURE_1_IBT if needed. */
- prop = _bfd_elf_get_property (ebfd,
- GNU_PROPERTY_X86_FEATURE_1_AND,
- 4);
- prop->u.number = features;
- prop->pr_kind = property_number;
-
sec = bfd_make_section_with_flags (ebfd,
NOTE_GNU_PROPERTY_SECTION_NAME,
(SEC_ALLOC
info->callbacks->einfo (_("%F: failed to create GNU property section\n"));
if (!bfd_set_section_alignment (ebfd, sec, 2))
- goto error_alignment;
+ {
+error_alignment:
+ info->callbacks->einfo (_("%F%A: failed to align section\n"),
+ sec);
+ }
elf_section_type (sec) = SHT_NOTE;
}
if (sec != NULL
&& !bfd_set_section_alignment (sec->owner, sec,
plt_alignment))
- {
-error_alignment:
- info->callbacks->einfo (_("%F%A: failed to align section\n"),
- sec);
- }
+ goto error_alignment;
}
return pbfd;
return _bfd_elf_link_check_relocs (abfd, info);
}
+static void
+elf_i386_merge_symbol_attribute (struct elf_link_hash_entry *h,
+ const Elf_Internal_Sym *isym,
+ bfd_boolean definition,
+ bfd_boolean dynamic ATTRIBUTE_UNUSED)
+{
+ if (definition)
+ {
+ struct elf_i386_link_hash_entry *eh
+ = (struct elf_i386_link_hash_entry *) h;
+ eh->def_protected = (ELF_ST_VISIBILITY (isym->st_other)
+ == STV_PROTECTED);
+ }
+}
+
#define TARGET_LITTLE_SYM i386_elf32_vec
#define TARGET_LITTLE_NAME "elf32-i386"
#define ELF_ARCH bfd_arch_i386
#define elf_backend_parse_gnu_properties elf_i386_parse_gnu_properties
#define elf_backend_merge_gnu_properties elf_i386_merge_gnu_properties
#define elf_backend_setup_gnu_properties elf_i386_link_setup_gnu_properties
+#define elf_backend_merge_symbol_attribute elf_i386_merge_symbol_attribute
#include "elf32-target.h"
projects / binutils-gdb.git / blobdiff