case R_X86_64_GOTPCREL:
case R_X86_64_GOTPCREL64:
+ h->got.refcount += 1;
if (htab->sgot == NULL
&& !elf64_x86_64_create_got_section (htab->elf.dynobj,
info))
return TRUE;
}
- if (h->plt.refcount <= 0)
- abort ();
-
/* When building a static executable, use .iplt, .igot.plt and
.rela.iplt sections for STT_GNU_IFUNC symbols. */
if (htab->splt != 0)
if (h->dynindx == -1 || h->forced_local)
eh->dyn_relocs = NULL;
- /* STT_GNU_IFUNC symbol uses .got.plt, not .got. */
- h->got.refcount = 0;
+ /* STT_GNU_IFUNC symbol uses .got.plt, not .got. But for
+ shared library, we must go through GOT and we can't
+ use R_X86_64_IRELATIVE unless it is forced local. */
+ if (info->executable
+ || info->symbolic
+ || h->forced_local)
+ {
+ if (h->pointer_equality_needed
+ && htab->sgot != NULL)
+ {
+ /* We can't use .got.plt, which contains the real
+ function addres, since we need pointer equality.
+ We will load the GOT entry with the PLT entry
+ in elf64_x86_64_finish_dynamic_symbol and don't
+ need GOT relocation. */
+ h->got.offset = htab->sgot->size;
+ htab->sgot->size += GOT_ENTRY_SIZE;
+ eh->tlsdesc_got = (bfd_vma) -1;
+ goto skip_relgot;
+ }
+ else
+ h->got.refcount = 0;
+ }
}
else if (htab->elf.dynamic_sections_created
&& h->plt.refcount > 0)
else
h->got.offset = (bfd_vma) -1;
+skip_relgot:
if (eh->dyn_relocs == NULL)
return TRUE;
base_got = htab->sgot;
off = h->got.offset;
- if (base_got == NULL
- || off != (bfd_vma) -1)
+ if (base_got == NULL)
abort ();
- /* We can't use h->got.offset here to save state, or
- even just remember the offset, as finish_dynamic_symbol
- would use that as offset into .got. */
-
- if (htab->splt != NULL)
+ if (off == (bfd_vma) -1)
{
- plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
- off = (plt_index + 3) * GOT_ENTRY_SIZE;
- base_got = htab->sgotplt;
- }
- else
- {
- plt_index = h->plt.offset / PLT_ENTRY_SIZE;
- off = plt_index * GOT_ENTRY_SIZE;
- base_got = htab->igotplt;
- }
+ /* We can't use h->got.offset here to save state, or
+ even just remember the offset, as finish_dynamic_symbol
+ would use that as offset into .got. */
- if (h->dynindx == -1
- || h->forced_local
- || info->symbolic)
- {
- /* This references the local defitionion. We must
- initialize this entry in the global offset table.
- Since the offset must always be a multiple of 8, we
- use the least significant bit to record whether we
- have initialized it already.
-
- When doing a dynamic link, we create a .rela.got
- relocation entry to initialize the value. This is
- done in the finish_dynamic_symbol routine. */
- if ((off & 1) != 0)
- off &= ~1;
+ if (htab->splt != NULL)
+ {
+ plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
+ off = (plt_index + 3) * GOT_ENTRY_SIZE;
+ base_got = htab->sgotplt;
+ }
else
{
- bfd_put_64 (output_bfd, relocation,
- base_got->contents + off);
- /* Note that this is harmless for the GOTPLT64 case,
- as -1 | 1 still is -1. */
- h->got.offset |= 1;
+ plt_index = h->plt.offset / PLT_ENTRY_SIZE;
+ off = plt_index * GOT_ENTRY_SIZE;
+ base_got = htab->igotplt;
+ }
+
+ if (h->dynindx == -1
+ || h->forced_local
+ || info->symbolic)
+ {
+ /* This references the local defitionion. We must
+ initialize this entry in the global offset table.
+ Since the offset must always be a multiple of 8,
+ we use the least significant bit to record
+ whether we have initialized it already.
+
+ When doing a dynamic link, we create a .rela.got
+ relocation entry to initialize the value. This
+ is done in the finish_dynamic_symbol routine. */
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ bfd_put_64 (output_bfd, relocation,
+ base_got->contents + off);
+ /* Note that this is harmless for the GOTPLT64
+ case, as -1 | 1 still is -1. */
+ h->got.offset |= 1;
+ }
}
}
of a version file, we just want to emit a RELATIVE reloc.
The entry in the global offset table will already have been
initialized in the relocate_section function. */
- if (info->shared
- && SYMBOL_REFERENCES_LOCAL (info, h))
+ if ((info->executable
+ || info->symbolic
+ || h->forced_local)
+ && h->def_regular
+ && h->pointer_equality_needed
+ && h->type == STT_GNU_IFUNC)
+ {
+ /* The STT_GNU_IFUNC symbol is locally defined. But we can't
+ use .got.plt, which contains the real function addres,
+ since we need pointer equality. We load the GOT entry
+ with the PLT entry without relocation. */
+ asection *plt = htab->splt ? htab->splt : htab->iplt;
+ if (htab->sgot == NULL
+ || h->plt.offset == (bfd_vma) -1)
+ abort ();
+ bfd_put_64 (output_bfd, (plt->output_section->vma
+ + plt->output_offset + h->plt.offset),
+ htab->sgot->contents + h->got.offset);
+ return TRUE;
+ }
+ else if (info->shared
+ && SYMBOL_REFERENCES_LOCAL (info, h))
{
if (!h->def_regular)
return FALSE;
projects / deliverable / binutils-gdb.git / blobdiff