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2000-05-03 Martin v. Löwis <loewis@informatik.hu-berlin.de> 

* elflink.h (elf_link_add_object_symbols): Reset dynindx for
	hidden and internal symbols.
	(elf_fix_symbol_flags): Clear NEEDS_PLT for symbols with
	visibility.
	* elflink.c (_bfd_elf_link_record_dynamic_symbol): Do not
	assign a PLT or GOT entry to symbols with hidden and
	internal visibility.
This commit is contained in:
H.J. Lu 2000-05-04 06:38:33 +00:00
parent fb166ee3a7
commit 0444bdd49c
3 changed files with 33 additions and 5 deletions
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10
bfd/ChangeLog
View File

@ -1,3 +1,13 @@
2000-05-03 Martin v. Löwis <loewis@informatik.hu-berlin.de>
* elflink.h (elf_link_add_object_symbols): Reset dynindx for
hidden and internal symbols.
(elf_fix_symbol_flags): Clear NEEDS_PLT for symbols with
visibility.
* elflink.c (_bfd_elf_link_record_dynamic_symbol): Do not
assign a PLT or GOT entry to symbols with hidden and
internal visibility.
2000-05-03 Mark Elbrecht <snowball3@bigfoot.com>
* bfd/coff-go32.c (COFF_SECTION_ALIGNMENT_ENTRIES): Add entry for

4
bfd/elflink.c
View File

@ -238,8 +238,8 @@ _bfd_elf_link_record_dynamic_symbol (info, h)
}
h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
break;
return true;
default:
break;
}

24
bfd/elflink.h
View File

@ -891,6 +891,7 @@ elf_link_add_object_symbols (abfd, info)
Elf_External_Sym *esym;
Elf_External_Sym *esymend;
struct elf_backend_data *bed;
boolean visibility_changed = false;
bed = get_elf_backend_data (abfd);
add_symbol_hook = bed->elf_add_symbol_hook;
@ -1581,7 +1582,10 @@ elf_link_add_object_symbols (abfd, info)
unsigned char symvis = ELF_ST_VISIBILITY (sym.st_other);
if (symvis && (hvis > symvis || hvis == 0))
h->other = sym.st_other;
{
visibility_changed = true;
h->other = sym.st_other;
}
/* If neither has visibility, use the st_other of the
definition. This is an arbitrary choice, since the
@ -1852,6 +1856,18 @@ elf_link_add_object_symbols (abfd, info)
goto error_return;
}
}
else if (dynsym && h->dynindx != -1 && visibility_changed)
/* If the symbol already has a dynamic index, but
visibility says it should not be visible, turn it into
a local symbol. */
switch (ELF_ST_VISIBILITY (h->other))
{
case STV_INTERNAL:
case STV_HIDDEN:
h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
(*bed->elf_backend_hide_symbol) (h);
break;
}
}
}
@ -3339,10 +3355,12 @@ elf_fix_symbol_flags (h, eif)
/* If -Bsymbolic was used (which means to bind references to global
symbols to the definition within the shared object), and this
symbol was defined in a regular object, then it actually doesn't
need a PLT entry. */
need a PLT entry. Likewise, if the symbol has any kind of
visibility (internal, hidden, or protected), it doesn't need a
PLT. */
if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
&& eif->info->shared
&& eif->info->symbolic
&& (eif->info->symbolic || ELF_ST_VISIBILITY (h->other))
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
{
h->elf_link_hash_flags &=~ ELF_LINK_HASH_NEEDS_PLT;