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* elf-hppa.h (elf_hppa_unmark_useless_dynamic_symbols): New function. 

(elf_hppa_remark_useless_dynamic_symbols): Similarly.
        (elf_hppa_final_link): Call them.
This commit is contained in:
Jeff Law 1999-09-10 06:38:05 +00:00
parent 904ecb2d78
commit af7dc6449e
2 changed files with 102 additions and 2 deletions
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6
bfd/ChangeLog
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@ -1,3 +1,9 @@
Fri Sep 10 00:35:14 1999 Jeffrey A Law (law@cygnus.com)
* elf-hppa.h (elf_hppa_unmark_useless_dynamic_symbols): New function.
(elf_hppa_remark_useless_dynamic_symbols): Similarly.
(elf_hppa_final_link): Call them.
1999-09-10 Ian Lance Taylor <ian@zembu.com>
* elflink.h (elf_fix_symbol_flags): Move weakdef handling here...

98
bfd/elf-hppa.h
View File

@ -63,6 +63,12 @@ static boolean elf_hppa_add_symbol_hook
static boolean elf_hppa_final_link
PARAMS ((bfd *, struct bfd_link_info *));
static boolean elf_hppa_unmark_useless_dynamic_symbols
PARAMS ((struct elf_link_hash_entry *, PTR));
static boolean elf_hppa_remark_useless_dynamic_symbols
PARAMS ((struct elf_link_hash_entry *, PTR));
/* ELF/PA relocation howto entries. */
static reloc_howto_type elf_hppa_howto_table[ELF_HOWTO_TABLE_SIZE] =
@ -736,6 +742,74 @@ elf_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
return true;
}
static boolean
elf_hppa_unmark_useless_dynamic_symbols (h, data)
struct elf_link_hash_entry *h;
PTR data;
{
struct bfd_link_info *info = (struct bfd_link_info *)data;
/* If we are not creating a shared library, and this symbol is
referenced by a shared library but is not defined anywhere, then
the generic code will warn that it is undefined.
This behavior is undesirable on HPs since the standard shared
libraries contain reerences to undefined symbols.
So we twiddle the flags associated with such symbols so that they
will not trigger the warning. ?!? FIXME. This is horribly fraglie.
Ultimately we should have better controls over the generic ELF BFD
linker code. */
if (! info->relocateable
&& ! (info->shared
&& !info->no_undefined)
&& h->root.type == bfd_link_hash_undefined
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
{
h->elf_link_hash_flags &= ~ELF_LINK_HASH_REF_DYNAMIC;
h->elf_link_hash_flags |= 0x8000;
}
return true;
}
static boolean
elf_hppa_remark_useless_dynamic_symbols (h, data)
struct elf_link_hash_entry *h;
PTR data;
{
struct bfd_link_info *info = (struct bfd_link_info *)data;
/* If we are not creating a shared library, and this symbol is
referenced by a shared library but is not defined anywhere, then
the generic code will warn that it is undefined.
This behavior is undesirable on HPs since the standard shared
libraries contain reerences to undefined symbols.
So we twiddle the flags associated with such symbols so that they
will not trigger the warning. ?!? FIXME. This is horribly fraglie.
Ultimately we should have better controls over the generic ELF BFD
linker code. */
if (! info->relocateable
&& ! (info->shared
&& !info->no_undefined)
&& h->root.type == bfd_link_hash_undefined
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0
&& (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0
&& (h->elf_link_hash_flags & 0x8000) != 0)
{
h->elf_link_hash_flags |= ELF_LINK_HASH_REF_DYNAMIC;
h->elf_link_hash_flags &= ~0x8000;
}
return true;
}
/* Called after we have seen all the input files/sections, but before
final symbol resolution and section placement has been determined.
@ -747,6 +821,8 @@ elf_hppa_final_link (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
boolean retval;
/* Make sure we've got ourselves a suitable __gp value. */
if (!info->relocateable)
{
@ -779,8 +855,27 @@ elf_hppa_final_link (abfd, info)
_bfd_set_gp_value (abfd, gp_val);
}
/* HP's shared libraries have references to symbols that are not
defined anywhere. The generic ELF BFD linker code will complaim
about such symbols.
So we detect the losing case and arrange for the flags on the symbol
to indicate that it was never referenced. This keeps the generic
ELF BFD link code happy and appears to not create any secondary
problems. Ultimately we need a way to control the behavior of the
generic ELF BFD link code better. */
elf_link_hash_traverse (elf_hash_table (info),
elf_hppa_unmark_useless_dynamic_symbols,
info);
/* Invoke the regular ELF backend linker to do all the work. */
return bfd_elf_bfd_final_link (abfd, info);
retval = bfd_elf_bfd_final_link (abfd, info);
elf_link_hash_traverse (elf_hash_table (info),
elf_hppa_remark_useless_dynamic_symbols,
info);
return retval;
}
/* Relocate an HPPA ELF section. */
@ -1536,7 +1631,6 @@ elf_hppa_relocate_insn (insn, sym_value, r_type)
return insn | sym_value;
}
default:
return insn;
}