static reloc_howto_type elf_howto_table[]=
{
- HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
+ HOWTO(R_386_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
bfd_elf_generic_reloc, "R_386_NONE",
TRUE, 0x00000000, 0x00000000, FALSE),
HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
TRUE, 0xffffffff, 0xffffffff, FALSE),
/* Another gap. */
-#define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset)
-#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative)
+#define R_386_ext2 (R_386_IRELATIVE + 1 - R_386_tls_offset)
+#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_ext2)
/* GNU extension to record C++ vtable hierarchy. */
HOWTO (R_386_GNU_VTINHERIT, /* type */
&& ((indx = r_type - R_386_ext_offset) - R_386_standard
>= R_386_ext - R_386_standard)
&& ((indx = r_type - R_386_tls_offset) - R_386_ext
- >= R_386_irelative - R_386_ext)
- && ((indx = r_type - R_386_vt_offset) - R_386_irelative
- >= R_386_vt - R_386_irelative))
+ >= R_386_ext2 - R_386_ext)
+ && ((indx = r_type - R_386_vt_offset) - R_386_ext2
+ >= R_386_vt - R_386_ext2))
{
(*_bfd_error_handler) (_("%B: invalid relocation type %d"),
abfd, (int) r_type);
(GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
unsigned char tls_type;
+ /* Symbol is referenced by R_386_GOTOFF relocation. */
+ unsigned int gotoff_ref : 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;
+
/* Information about the GOT PLT entry. Filled when there are both
GOT and PLT relocations against the same function. */
union gotplt_union plt_got;
eh = (struct elf_i386_link_hash_entry *) entry;
eh->dyn_relocs = NULL;
eh->tls_type = GOT_UNKNOWN;
+ eh->gotoff_ref = 0;
+ eh->func_pointer_refcount = 0;
eh->plt_got.offset = (bfd_vma) -1;
eh->tlsdesc_got = (bfd_vma) -1;
}
ret->elf.indx = sec->id;
ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
ret->elf.dynindx = -1;
+ ret->func_pointer_refcount = 0;
ret->plt_got.offset = (bfd_vma) -1;
*slot = ret;
}
return FALSE;
htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
- if (!info->shared)
- htab->srelbss = bfd_get_linker_section (dynobj, ".rel.bss");
-
- if (!htab->sdynbss
- || (!info->shared && !htab->srelbss))
+ if (!htab->sdynbss)
abort ();
+ if (bfd_link_executable (info))
+ {
+ /* Always allow copy relocs for building executables. */
+ asection *s = bfd_get_linker_section (dynobj, ".rel.bss");
+ if (s == NULL)
+ {
+ const struct elf_backend_data *bed = get_elf_backend_data (dynobj);
+ s = bfd_make_section_anyway_with_flags (dynobj,
+ ".rel.bss",
+ (bed->dynamic_sec_flags
+ | SEC_READONLY));
+ if (s == NULL
+ || ! bfd_set_section_alignment (dynobj, s,
+ bed->s->log_file_align))
+ return FALSE;
+ }
+ htab->srelbss = s;
+ }
+
if (get_elf_i386_backend_data (dynobj)->is_vxworks
&& !elf_vxworks_create_dynamic_sections (dynobj, info,
&htab->srelplt2))
eind->tls_type = GOT_UNKNOWN;
}
+ /* Copy gotoff_ref so that elf_i386_adjust_dynamic_symbol will
+ generate a R_386_COPY reloc. */
+ edir->gotoff_ref |= eind->gotoff_ref;
+
if (ELIMINATE_COPY_RELOCS
&& ind->root.type != bfd_link_hash_indirect
&& dir->dynamic_adjusted)
dir->pointer_equality_needed |= ind->pointer_equality_needed;
}
else
- _bfd_elf_link_hash_copy_indirect (info, dir, ind);
+ {
+ if (eind->func_pointer_refcount > 0)
+ {
+ edir->func_pointer_refcount += eind->func_pointer_refcount;
+ eind->func_pointer_refcount = 0;
+ }
+
+ _bfd_elf_link_hash_copy_indirect (info, dir, ind);
+ }
}
/* Return TRUE if the TLS access code sequence support transition
case R_386_TLS_IE_32:
case R_386_TLS_IE:
case R_386_TLS_GOTIE:
- if (info->executable)
+ if (bfd_link_executable (info))
{
if (h == NULL)
to_type = R_386_TLS_LE_32;
{
unsigned int new_to_type = to_type;
- if (info->executable
+ if (bfd_link_executable (info)
&& h != NULL
&& h->dynindx == -1
&& (tls_type & GOT_TLS_IE))
break;
case R_386_TLS_LDM:
- if (info->executable)
+ if (bfd_link_executable (info))
to_type = R_386_TLS_LE_32;
break;
return TRUE;
}
+/* Rename some of the generic section flags to better document how they
+ are used here. */
+#define need_convert_mov_to_lea sec_flg0
+
/* Look through the relocs for a section during the first phase, and
calculate needed space in the global offset table, procedure linkage
table, and dynamic reloc sections. */
asection *sreloc;
bfd_boolean use_plt_got;
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
return TRUE;
BFD_ASSERT (is_i386_elf (abfd));
unsigned int r_type;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
+ struct elf_i386_link_hash_entry *eh;
Elf_Internal_Sym *isym;
const char *name;
bfd_boolean size_reloc;
h = (struct elf_link_hash_entry *) h->root.u.i.link;
}
+ eh = (struct elf_i386_link_hash_entry *) h;
if (h != NULL)
{
/* Create the ifunc sections for static executables. If we
default:
break;
+ case R_386_GOTOFF:
+ eh->gotoff_ref = 1;
case R_386_32:
case R_386_PC32:
case R_386_PLT32:
case R_386_GOT32:
- case R_386_GOTOFF:
if (htab->elf.dynobj == NULL)
htab->elf.dynobj = abfd;
if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
/* It is referenced by a non-shared object. */
h->ref_regular = 1;
h->root.non_ir_ref = 1;
+
+ if (h->type == STT_GNU_IFUNC)
+ elf_tdata (info->output_bfd)->has_gnu_symbols
+ |= elf_gnu_symbol_ifunc;
}
if (! elf_i386_tls_transition (info, abfd, sec, NULL,
case R_386_TLS_IE_32:
case R_386_TLS_IE:
case R_386_TLS_GOTIE:
- if (!info->executable)
+ if (!bfd_link_executable (info))
info->flags |= DF_STATIC_TLS;
/* Fall through */
case R_386_TLS_LE_32:
case R_386_TLS_LE:
- if (info->executable)
+ if (bfd_link_executable (info))
break;
info->flags |= DF_STATIC_TLS;
/* Fall through */
case R_386_32:
case R_386_PC32:
- if (h != NULL && info->executable)
+ if (h != NULL && bfd_link_executable (info))
{
/* If this reloc is in a read-only section, we might
need a copy reloc. We can't check reliably at this
refers to is in a shared lib. */
h->plt.refcount += 1;
if (r_type != R_386_PC32)
- h->pointer_equality_needed = 1;
+ {
+ h->pointer_equality_needed = 1;
+ /* R_386_32 can be resolved at run-time. */
+ if (r_type == R_386_32
+ && (sec->flags & SEC_READONLY) == 0)
+ eh->func_pointer_refcount += 1;
+ }
}
size_reloc = FALSE;
may need to keep relocations for symbols satisfied by a
dynamic library if we manage to avoid copy relocs for the
symbol. */
- if ((info->shared
+ if ((bfd_link_pic (info)
&& (sec->flags & SEC_ALLOC) != 0
&& (r_type != R_386_PC32
|| (h != NULL
|| h->root.type == bfd_link_hash_defweak
|| !h->def_regular))))
|| (ELIMINATE_COPY_RELOCS
- && !info->shared
+ && !bfd_link_pic (info)
&& (sec->flags & SEC_ALLOC) != 0
&& h != NULL
&& (h->root.type == bfd_link_hash_defweak
relocations we need for this symbol. */
if (h != NULL)
{
- head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
+ head = &eh->dyn_relocs;
}
else
{
if (use_plt_got
&& h != NULL
&& h->plt.refcount > 0
- && h->got.refcount > 0
+ && (((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
+ || h->got.refcount > 0)
&& htab->plt_got == NULL)
{
/* Create the GOT procedure linkage table. */
plt_got_align))
return FALSE;
}
+
+ if (r_type == R_386_GOT32
+ && (h == NULL || h->type != STT_GNU_IFUNC))
+ sec->need_convert_mov_to_lea = 1;
}
return TRUE;
bfd_signed_vma *local_got_refcounts;
const Elf_Internal_Rela *rel, *relend;
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
return TRUE;
htab = elf_i386_hash_table (info);
case R_386_32:
case R_386_PC32:
case R_386_SIZE32:
- if (info->shared
+ if (bfd_link_pic (info)
&& (h == NULL || h->type != STT_GNU_IFUNC))
break;
/* Fall through */
{
if (h->plt.refcount > 0)
h->plt.refcount -= 1;
+ if (r_type == R_386_32
+ && (sec->flags & SEC_READONLY) == 0)
+ {
+ struct elf_i386_link_hash_entry *eh
+ = (struct elf_i386_link_hash_entry *) h;
+ if (eh->func_pointer_refcount > 0)
+ eh->func_pointer_refcount -= 1;
+ }
}
break;
only references to the symbol are via the global offset table.
For such cases we need not do anything here; the relocations will
be handled correctly by relocate_section. */
- if (info->shared)
+ if (!bfd_link_executable (info))
return TRUE;
/* If there are no references to this symbol that do not use the
- GOT, we don't need to generate a copy reloc. */
- if (!h->non_got_ref)
+ 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 (htab == NULL)
return FALSE;
- /* If there aren't any dynamic relocs in read-only sections, then
- we can keep the dynamic relocs and avoid the copy reloc. This
- doesn't work on VxWorks, where we can not have dynamic relocations
- (other than copy and jump slot relocations) in an executable. */
+ /* If there aren't any dynamic relocs in read-only sections nor
+ R_386_GOTOFF relocation, then we can keep the dynamic relocs and
+ avoid the copy reloc. This doesn't work on VxWorks, where we can
+ not have dynamic relocations (other than copy and jump slot
+ relocations) in an executable. */
if (ELIMINATE_COPY_RELOCS
+ && !eh->gotoff_ref
&& !get_elf_i386_backend_data (info->output_bfd)->is_vxworks)
{
- eh = (struct elf_i386_link_hash_entry *) h;
for (p = eh->dyn_relocs; p != NULL; p = p->next)
{
s = p->sec->output_section;
plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
+ /* Clear the reference count of function pointer relocations if
+ symbol isn't a normal function. */
+ if (h->type != STT_FUNC)
+ eh->func_pointer_refcount = 0;
+
/* We can't use the GOT PLT if pointer equality is needed since
finish_dynamic_symbol won't clear symbol value and the dynamic
linker won't update the GOT slot. We will get into an infinite
return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
plt_entry_size,
plt_entry_size, 4);
+ /* Don't create the PLT entry if there are only function pointer
+ relocations which can be resolved at run-time. */
else if (htab->elf.dynamic_sections_created
- && (h->plt.refcount > 0 || eh->plt_got.refcount > 0))
+ && (h->plt.refcount > eh->func_pointer_refcount
+ || eh->plt_got.refcount > 0))
{
- bfd_boolean use_plt_got = eh->plt_got.refcount > 0;
+ bfd_boolean use_plt_got;
+
+ /* Clear the reference count of function pointer relocations
+ if PLT is used. */
+ eh->func_pointer_refcount = 0;
+
+ if ((info->flags & DF_BIND_NOW) && !h->pointer_equality_needed)
+ {
+ /* Don't use the regular PLT for DF_BIND_NOW. */
+ h->plt.offset = (bfd_vma) -1;
+
+ /* Use the GOT PLT. */
+ h->got.refcount = 1;
+ eh->plt_got.refcount = 1;
+ }
+
+ use_plt_got = eh->plt_got.refcount > 0;
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
return FALSE;
}
- if (info->shared
+ if (bfd_link_pic (info)
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
{
asection *s = htab->elf.splt;
asection *got_s = htab->plt_got;
/* If this is the first .plt entry, make room for the special
- first entry. */
+ first entry. The .plt section is used by prelink to undo
+ prelinking for dynamic relocations. */
if (s->size == 0)
s->size = plt_entry_size;
location in the .plt. This is required to make function
pointers compare as equal between the normal executable and
the shared library. */
- if (! info->shared
+ if (! bfd_link_pic (info)
&& !h->def_regular)
{
if (use_plt_got)
}
if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
- && !info->shared)
+ && !bfd_link_pic (info))
{
/* VxWorks has a second set of relocations for each PLT entry
in executables. They go in a separate relocation section,
/* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
make it a R_386_TLS_LE_32 requiring no TLS entry. */
if (h->got.refcount > 0
- && info->executable
+ && bfd_link_executable (info)
&& h->dynindx == -1
&& (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
h->got.offset = (bfd_vma) -1;
else if (! GOT_TLS_GDESC_P (tls_type)
&& (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak)
- && (info->shared
+ && (bfd_link_pic (info)
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
if (GOT_TLS_GDESC_P (tls_type))
space for pc-relative relocs that have become local due to symbol
visibility changes. */
- if (info->shared)
+ if (bfd_link_pic (info))
{
/* The only reloc that uses pc_count is R_386_PC32, which will
appear on a call or on something like ".long foo - .". We
{
/* For the non-shared case, discard space for relocs against
symbols which turn out to need copy relocs or are not
- dynamic. */
+ dynamic. Keep dynamic relocations for run-time function
+ pointer initialization. */
- if (!h->non_got_ref
+ if ((!h->non_got_ref || eh->func_pointer_refcount > 0)
&& ((h->def_dynamic
&& !h->def_regular)
|| (htab->elf.dynamic_sections_created
}
eh->dyn_relocs = NULL;
+ eh->func_pointer_refcount = 0;
keep: ;
}
info->flags |= DF_TEXTREL;
- if (info->warn_shared_textrel && info->shared)
- info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'.\n"),
+ if ((info->warn_shared_textrel && bfd_link_pic (info))
+ || info->error_textrel)
+ info->callbacks->einfo (_("%P: %B: warning: relocation against `%s' in readonly section `%A'\n"),
p->sec->owner, h->root.root.string,
p->sec);
if (!is_elf_hash_table (link_info->hash))
return FALSE;
- /* Nothing to do if there are no codes, no relocations or no output. */
+ /* Nothing to do if there is no need or no output. */
if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
- || sec->reloc_count == 0
+ || sec->need_convert_mov_to_lea == 0
|| bfd_is_abs_section (sec->output_section))
return TRUE;
/* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
&& irel->r_offset >= 2
- && bfd_get_8 (input_bfd,
- contents + irel->r_offset - 2) == 0x8b)
+ && bfd_get_8 (abfd, contents + irel->r_offset - 2) == 0x8b)
{
- bfd_put_8 (output_bfd, 0x8d,
- contents + irel->r_offset - 2);
+ bfd_put_8 (abfd, 0x8d, contents + irel->r_offset - 2);
irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
if (local_got_refcounts != NULL
&& local_got_refcounts[r_symndx] > 0)
&& h != htab->elf.hdynamic
&& SYMBOL_REFERENCES_LOCAL (link_info, h)
&& irel->r_offset >= 2
- && bfd_get_8 (input_bfd,
- contents + irel->r_offset - 2) == 0x8b)
+ && bfd_get_8 (abfd, contents + irel->r_offset - 2) == 0x8b)
{
- bfd_put_8 (output_bfd, 0x8d,
- contents + irel->r_offset - 2);
+ bfd_put_8 (abfd, 0x8d, contents + irel->r_offset - 2);
irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
if (h->got.refcount > 0)
h->got.refcount -= 1;
if (htab->elf.dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
- if (info->executable)
+ if (bfd_link_executable (info))
{
s = bfd_get_linker_section (dynobj, ".interp");
if (s == NULL)
&& (info->flags & DF_TEXTREL) == 0)
{
info->flags |= DF_TEXTREL;
- if (info->warn_shared_textrel && info->shared)
- info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'.\n"),
+ if ((info->warn_shared_textrel && bfd_link_pic (info))
+ || info->error_textrel)
+ info->callbacks->einfo (_("%P: %B: warning: relocation in readonly section `%A'\n"),
p->sec->owner, p->sec);
}
}
|| *local_tls_type == GOT_TLS_IE_BOTH)
s->size += 4;
}
- if (info->shared
+ if (bfd_link_pic (info)
|| GOT_TLS_GD_ANY_P (*local_tls_type)
|| (*local_tls_type & GOT_TLS_IE))
{
#define add_dynamic_entry(TAG, VAL) \
_bfd_elf_add_dynamic_entry (info, TAG, VAL)
- if (info->executable)
+ if (bfd_link_executable (info))
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;
if (htab->elf.splt->size != 0)
{
- if (!add_dynamic_entry (DT_PLTGOT, 0)
- || !add_dynamic_entry (DT_PLTRELSZ, 0)
- || !add_dynamic_entry (DT_PLTREL, DT_REL)
- || !add_dynamic_entry (DT_JMPREL, 0))
+ /* DT_PLTGOT is used by prelink even if there is no PLT
+ relocation. */
+ if (!add_dynamic_entry (DT_PLTGOT, 0))
return FALSE;
+
+ if (htab->elf.srelplt->size != 0)
+ {
+ if (!add_dynamic_entry (DT_PLTRELSZ, 0)
+ || !add_dynamic_entry (DT_PLTREL, DT_REL)
+ || !add_dynamic_entry (DT_JMPREL, 0))
+ return FALSE;
+ }
}
if (relocs)
if ((info->flags & DF_TEXTREL) != 0)
{
+ if ((elf_tdata (output_bfd)->has_gnu_symbols
+ & elf_gnu_symbol_ifunc) == elf_gnu_symbol_ifunc)
+ {
+ info->callbacks->einfo
+ (_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
if (!add_dynamic_entry (DT_TEXTREL, 0))
return FALSE;
}
tlsbase = (struct elf_link_hash_entry *)bh;
tlsbase->def_regular = 1;
tlsbase->other = STV_HIDDEN;
+ tlsbase->root.linker_def = 1;
(*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
}
}
struct elf_i386_link_hash_table *htab;
struct bfd_link_hash_entry *base;
- if (!info->executable)
+ if (!bfd_link_executable (info))
return;
htab = elf_i386_hash_table (info);
/* We have to handle relocations in vxworks .tls_vars sections
specially, because the dynamic loader is 'weird'. */
is_vxworks_tls = (get_elf_i386_backend_data (output_bfd)->is_vxworks
- && info->shared
+ && bfd_link_pic (info)
&& !strcmp (input_section->output_section->name,
".tls_vars"));
&& ((indx = r_type - R_386_ext_offset) - R_386_standard
>= R_386_ext - R_386_standard)
&& ((indx = r_type - R_386_tls_offset) - R_386_ext
- >= R_386_irelative - R_386_ext))
+ >= R_386_ext2 - R_386_ext))
{
(*_bfd_error_handler)
(_("%B: unrecognized relocation (0x%x) in section `%A'"),
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
&& ((sec->flags & SEC_MERGE) != 0
- || (info->relocatable
+ || (bfd_link_relocatable (info)
&& sec->output_offset != 0)))
{
bfd_vma addend;
abort ();
}
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
addend += sec->output_offset;
else
{
break;
}
}
- else if (!info->relocatable
+ else if (!bfd_link_relocatable (info)
&& ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
{
/* Relocate against local STT_GNU_IFUNC symbol. */
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
rel, 1, relend, howto, 0, contents);
- if (info->relocatable)
+ if (bfd_link_relocatable (info))
continue;
/* Since STT_GNU_IFUNC symbol must go through PLT, we handle
bfd_vma plt_index;
const char *name;
- if ((input_section->flags & SEC_ALLOC) == 0
- || h->plt.offset == (bfd_vma) -1)
+ if ((input_section->flags & SEC_ALLOC) == 0)
+ {
+ /* Dynamic relocs are not propagated for SEC_DEBUGGING
+ sections because such sections are not SEC_ALLOC and
+ thus ld.so will not process them. */
+ if ((input_section->flags & SEC_DEBUGGING) != 0)
+ continue;
+ abort ();
+ }
+ else if (h->plt.offset == (bfd_vma) -1)
abort ();
/* STT_GNU_IFUNC symbol must go through PLT. */
case R_386_32:
/* Generate dynamic relcoation only when there is a
non-GOT reference in a shared object. */
- if (info->shared && h->non_got_ref)
+ if (bfd_link_pic (info) && h->non_got_ref)
{
Elf_Internal_Rela outrel;
asection *sreloc;
if (h->dynindx == -1
|| h->forced_local
- || info->executable)
+ || bfd_link_executable (info))
{
/* This symbol is resolved locally. */
outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
}
}
+ eh = (struct elf_i386_link_hash_entry *) h;
switch (r_type)
{
case R_386_GOT32:
off = h->got.offset;
dyn = htab->elf.dynamic_sections_created;
- if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
- || (info->shared
+ if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
+ bfd_link_pic (info),
+ h)
+ || (bfd_link_pic (info)
&& SYMBOL_REFERENCES_LOCAL (info, h))
|| (ELF_ST_VISIBILITY (h->other)
&& h->root.type == bfd_link_hash_undefweak))
bfd_put_32 (output_bfd, relocation,
htab->elf.sgot->contents + off);
- if (info->shared)
+ if (bfd_link_pic (info))
{
asection *s;
Elf_Internal_Rela outrel;
/* Relocation is relative to the start of the global offset
table. */
- /* Check to make sure it isn't a protected function symbol
- for shared library since it may not be local when used
- as function address. We also need to make sure that a
- symbol is defined locally. */
- if (info->shared && h)
+ /* Check to make sure it isn't a protected function or data
+ symbol for shared library since it may not be local when
+ used as function address or with copy relocation. We also
+ need to make sure that a symbol is referenced locally. */
+ if (!bfd_link_executable (info) && h)
{
if (!h->def_regular)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
- else if (!info->executable
- && !SYMBOLIC_BIND (info, h)
- && h->type == STT_FUNC
+ else if (!SYMBOL_REFERENCES_LOCAL (info, h)
+ && (h->type == STT_FUNC
+ || h->type == STT_OBJECT)
&& ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
{
(*_bfd_error_handler)
- (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
- input_bfd, h->root.root.string);
+ (_("%B: relocation R_386_GOTOFF against protected %s `%s' can not be used when making a shared object"),
+ input_bfd,
+ h->type == STT_FUNC ? "function" : "data",
+ h->root.root.string);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
if (h == NULL)
break;
- eh = (struct elf_i386_link_hash_entry *) h;
if ((h->plt.offset == (bfd_vma) -1
&& eh->plt_got.offset == (bfd_vma) -1)
|| htab->elf.splt == NULL)
|| is_vxworks_tls)
break;
- if ((info->shared
+ /* Copy dynamic function pointer relocations. */
+ if ((bfd_link_pic (info)
&& (h == NULL
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak)
&& ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
|| !SYMBOL_CALLS_LOCAL (info, h)))
|| (ELIMINATE_COPY_RELOCS
- && !info->shared
+ && !bfd_link_pic (info)
&& h != NULL
&& h->dynindx != -1
- && !h->non_got_ref
+ && (!h->non_got_ref || eh->func_pointer_refcount > 0)
&& ((h->def_dynamic
&& !h->def_regular)
|| h->root.type == bfd_link_hash_undefweak
else if (h != NULL
&& h->dynindx != -1
&& (r_type == R_386_PC32
- || !info->shared
+ || !bfd_link_pic (info)
|| !SYMBOLIC_BIND (info, h)
|| !h->def_regular))
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
break;
case R_386_TLS_IE:
- if (!info->executable)
+ if (!bfd_link_executable (info))
{
Elf_Internal_Rela outrel;
asection *sreloc;
break;
case R_386_TLS_LDO_32:
- if (!info->executable || (input_section->flags & SEC_CODE) == 0)
+ if (!bfd_link_executable (info)
+ || (input_section->flags & SEC_CODE) == 0)
relocation -= elf_i386_dtpoff_base (info);
else
/* When converting LDO to LE, we must negate. */
case R_386_TLS_LE_32:
case R_386_TLS_LE:
- if (!info->executable)
+ if (!bfd_link_executable (info))
{
Elf_Internal_Rela outrel;
asection *sreloc;
it up. */
if ((h->dynindx == -1
- && !((h->forced_local || info->executable)
+ && !((h->forced_local || bfd_link_executable (info))
&& h->def_regular
&& h->type == STT_GNU_IFUNC))
|| plt == NULL
}
/* Fill in the entry in the procedure linkage table. */
- if (! info->shared)
+ if (! bfd_link_pic (info))
{
memcpy (plt->contents + h->plt.offset, abed->plt->plt_entry,
abed->plt->plt_entry_size);
s = ((h->plt.offset - abed->plt->plt_entry_size)
/ abed->plt->plt_entry_size);
/* K: Number of relocations for PLTResolve. */
- if (info->shared)
+ if (bfd_link_pic (info))
k = PLTRESOLVE_RELOCS_SHLIB;
else
k = PLTRESOLVE_RELOCS;
+ gotplt->output_offset
+ got_offset);
if (h->dynindx == -1
- || ((info->executable
+ || ((bfd_link_executable (info)
|| ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
&& h->def_regular
&& h->type == STT_GNU_IFUNC))
abort ();
/* Fill in the entry in the GOT procedure linkage table. */
- if (! info->shared)
+ if (! bfd_link_pic (info))
{
got_plt_entry = elf_i386_got_plt_entry;
got_offset += got->output_section->vma + got->output_offset;
if (h->def_regular
&& h->type == STT_GNU_IFUNC)
{
- if (info->shared)
+ if (bfd_link_pic (info))
{
/* Generate R_386_GLOB_DAT. */
goto do_glob_dat;
return TRUE;
}
}
- else if (info->shared
+ else if (bfd_link_pic (info)
&& SYMBOL_REFERENCES_LOCAL (info, h))
{
BFD_ASSERT((h->got.offset & 1) != 0);
dynamic linker, before writing them out. */
static enum elf_reloc_type_class
-elf_i386_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
+elf_i386_reloc_type_class (const struct bfd_link_info *info,
const asection *rel_sec ATTRIBUTE_UNUSED,
const Elf_Internal_Rela *rela)
{
+ bfd *abfd = info->output_bfd;
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+ unsigned long r_symndx = ELF32_R_SYM (rela->r_info);
+ Elf_Internal_Sym sym;
+
+ if (htab->dynsym == NULL
+ || !bed->s->swap_symbol_in (abfd,
+ (htab->dynsym->contents
+ + r_symndx * sizeof (Elf32_External_Sym)),
+ 0, &sym))
+ abort ();
+
+ /* Check relocation against STT_GNU_IFUNC symbol. */
+ if (ELF32_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
+ return reloc_class_ifunc;
+
switch (ELF32_R_TYPE (rela->r_info))
{
case R_386_RELATIVE:
/* Fill in the first entry in the procedure linkage table. */
if (htab->elf.splt && htab->elf.splt->size > 0)
{
- if (info->shared)
+ if (bfd_link_pic (info))
{
memcpy (htab->elf.splt->contents, abed->plt->pic_plt0_entry,
abed->plt->plt0_entry_size);
->this_hdr.sh_entsize = 4;
/* Correct the .rel.plt.unloaded relocations. */
- if (abed->is_vxworks && !info->shared)
+ if (abed->is_vxworks && !bfd_link_pic (info))
{
int num_plts = (htab->elf.splt->size
/ abed->plt->plt_entry_size) - 1;
unsigned char *p;
p = htab->srelplt2->contents;
- if (info->shared)
+ if (bfd_link_pic (info))
p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
else
p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
if (plt_sym_val == NULL)
goto bad_return;
- for (i = 0; i < count; i++, p++)
+ for (i = 0; i < count; i++)
plt_sym_val[i] = -1;
plt_offset = bed->plt->plt_entry_size;
{
long reloc_index;
- /* PR 17512: file: bc9d6cf5. */
+ /* Skip unknown relocation. PR 17512: file: bc9d6cf5. */
if (p->howto == NULL)
- goto bad_return;
+ continue;
if (p->howto->type != R_386_JUMP_SLOT
&& p->howto->type != R_386_IRELATIVE)
abort ();
plt_sym_val[reloc_index] = plt->vma + plt_offset;
plt_offset += bed->plt->plt_entry_size;
+
+ /* PR binutils/18437: Skip extra relocations in the .rel.plt
+ section. */
+ if (plt_offset >= plt->size)
+ break;
}
free (plt_contents);
asection ** secp ATTRIBUTE_UNUSED,
bfd_vma * valp ATTRIBUTE_UNUSED)
{
- if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
- || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
+ if (ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE
&& (abfd->flags & DYNAMIC) == 0
&& bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
- elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
+ elf_tdata (info->output_bfd)->has_gnu_symbols
+ |= elf_gnu_symbol_unique;
return TRUE;
}
#define elf_backend_want_plt_sym 0
#define elf_backend_got_header_size 12
#define elf_backend_plt_alignment 4
+#define elf_backend_extern_protected_data 1
/* Support RELA for objdump of prelink objects. */
#define elf_info_to_howto elf_i386_info_to_howto_rel
#undef TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME "elf32-i386-sol2"
+#undef elf_backend_post_process_headers
+
/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
objects won't be recognized. */
#undef ELF_OSABI
#include "elf32-target.h"
+/* Intel MCU support. */
+
+static bfd_boolean
+elf32_iamcu_elf_object_p (bfd *abfd)
+{
+ /* Set the right machine number for an IAMCU elf32 file. */
+ bfd_default_set_arch_mach (abfd, bfd_arch_iamcu, bfd_mach_i386_iamcu);
+ return TRUE;
+}
+
+#undef TARGET_LITTLE_SYM
+#define TARGET_LITTLE_SYM iamcu_elf32_vec
+#undef TARGET_LITTLE_NAME
+#define TARGET_LITTLE_NAME "elf32-iamcu"
+#undef ELF_ARCH
+#define ELF_ARCH bfd_arch_iamcu
+
+#undef ELF_MACHINE_CODE
+#define ELF_MACHINE_CODE EM_IAMCU
+
+#undef ELF_OSABI
+
+#undef elf32_bed
+#define elf32_bed elf32_iamcu_bed
+
+#undef elf_backend_object_p
+#define elf_backend_object_p elf32_iamcu_elf_object_p
+
+#undef elf_backend_static_tls_alignment
+
+#undef elf_backend_want_plt_sym
+#define elf_backend_want_plt_sym 0
+
+#include "elf32-target.h"
+
+/* Restore defaults. */
+#undef ELF_ARCH
+#define ELF_ARCH bfd_arch_i386
+#undef ELF_MACHINE_CODE
+#define ELF_MACHINE_CODE EM_386
+
/* Native Client support. */
#undef TARGET_LITTLE_SYM
projects / deliverable / binutils-gdb.git / blobdiff