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* elf32-sparc.c (WILL_CALL_FINISH_DYNAMIC_SYMBOL): New.

Browse Source 
(elf32_sparc_relocate_section): Use it to figure out when to
        initialize .got entries.
        * elf64-sparc.c: Similarly.
This commit is contained in:
Richard Henderson 2002-04-01 10:00:49 +00:00
parent 2fccf04a44
commit e36f7d5326
3 changed files with 106 additions and 174 deletions
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7
bfd/ChangeLog
View File

@ -1,3 +1,10 @@
2002-04-01 Richard Henderson <rth@redhat.com>
* elf32-sparc.c (WILL_CALL_FINISH_DYNAMIC_SYMBOL): New.
(elf32_sparc_relocate_section): Use it to figure out when to
initialize .got entries.
* elf64-sparc.c: Similarly.
2002-03-28 Alan Modra <amodra@bigpond.net.au>
* linker.c (link_action): Ignore duplicate warning syms.

109
bfd/elf32-sparc.c
View File

@ -1084,6 +1084,17 @@ elf32_sparc_relax_section (abfd, section, link_info, again)
return true;
}
/* This is the condition under which finish_dynamic_symbol will be called
from elflink.h. If elflink.h doesn't call our finish_dynamic_symbol
routine, we'll need to do something about initializing any .plt and .got
entries in relocate_section. */
#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
((DYN) \
&& ((INFO)->shared \
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
&& ((H)->dynindx != -1 \
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
/* Relocate a SPARC ELF section. */
static boolean
@ -1133,9 +1144,10 @@ elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
asection *sec;
bfd_vma relocation;
bfd_vma relocation, off;
bfd_reloc_status_type r;
boolean is_plt = false;
boolean unresolved_reloc;
r_type = ELF32_R_TYPE (rel->r_info);
@ -1175,6 +1187,7 @@ elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
h = NULL;
sym = NULL;
sec = NULL;
unresolved_reloc = false;
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
@ -1187,71 +1200,30 @@ elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
relocation = 0;
if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
{
sec = h->root.u.def.section;
if (((r_type == R_SPARC_WPLT30
|| r_type == R_SPARC_PLT32)
&& h->plt.offset != (bfd_vma) -1)
|| ((r_type == R_SPARC_GOT10
|| r_type == R_SPARC_GOT13
|| r_type == R_SPARC_GOT22)
&& elf_hash_table (info)->dynamic_sections_created
&& (! info->shared
|| (! info->symbolic && h->dynindx != -1)
|| (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR) == 0))
|| (info->shared
&& ((! info->symbolic && h->dynindx != -1)
|| (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR) == 0)
&& (r_type == R_SPARC_8
|| r_type == R_SPARC_16
|| r_type == R_SPARC_32
|| r_type == R_SPARC_DISP8
|| r_type == R_SPARC_DISP16
|| r_type == R_SPARC_DISP32
|| r_type == R_SPARC_WDISP30
|| r_type == R_SPARC_WDISP22
|| r_type == R_SPARC_WDISP19
|| r_type == R_SPARC_WDISP16
|| r_type == R_SPARC_HI22
|| r_type == R_SPARC_22
|| r_type == R_SPARC_13
|| r_type == R_SPARC_LO10
|| r_type == R_SPARC_UA16
|| r_type == R_SPARC_UA32
|| ((r_type == R_SPARC_PC10
|| r_type == R_SPARC_PC22)
&& strcmp (h->root.root.string,
"_GLOBAL_OFFSET_TABLE_") != 0))
&& ((input_section->flags & SEC_ALLOC) != 0
/* DWARF will emit R_SPARC_32 relocations in its
sections against symbols defined externally
in shared libraries. We can't do anything
with them here. */
|| ((input_section->flags & SEC_DEBUGGING) != 0
&& (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC) != 0))))
{
/* In these cases, we don't need the relocation
value. We check specially because in some
obscure cases sec->output_section will be NULL. */
relocation = 0;
}
if (sec->output_section == NULL)
/* Set a flag that will be cleared later if we find a
relocation value for this symbol. output_section
is typically NULL for symbols satisfied by a shared
library. */
unresolved_reloc = true;
else
relocation = (h->root.u.def.value
+ sec->output_section->vma
+ sec->output_offset);
}
else if (h->root.type == bfd_link_hash_undefweak)
relocation = 0;
;
else if (info->shared
&& (!info->symbolic || info->allow_shlib_undefined)
&& !info->no_undefined
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
relocation = 0;
;
else
{
if (! ((*info->callbacks->undefined_symbol)
@ -1260,7 +1232,6 @@ elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
(!info->shared || info->no_undefined
|| ELF_ST_VISIBILITY (h->other)))))
return false;
relocation = 0;
}
}
@ -1279,14 +1250,17 @@ elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
if (h != NULL)
{
bfd_vma off;
boolean dyn;
off = h->got.offset;
BFD_ASSERT (off != (bfd_vma) -1);
dyn = elf_hash_table (info)->dynamic_sections_created;
if (! elf_hash_table (info)->dynamic_sections_created
if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
|| (info->shared
&& (info->symbolic || h->dynindx == -1)
&& (info->symbolic
|| h->dynindx == -1
|| (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
{
/* This is actually a static link, or it is a
@ -1310,13 +1284,11 @@ elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
h->got.offset |= 1;
}
}
relocation = sgot->output_offset + off - got_base;
else
unresolved_reloc = false;
}
else
{
bfd_vma off;
BFD_ASSERT (local_got_offsets != NULL
&& local_got_offsets[r_symndx] != (bfd_vma) -1);
@ -1355,10 +1327,8 @@ elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
local_got_offsets[r_symndx] |= 1;
}
relocation = sgot->output_offset + off - got_base;
}
relocation = sgot->output_offset + off - got_base;
break;
case R_SPARC_PLT32:
@ -1396,6 +1366,7 @@ elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
relocation = (splt->output_section->vma
+ splt->output_offset
+ h->plt.offset);
unresolved_reloc = false;
if (r_type == R_SPARC_PLT32)
{
r_type = R_SPARC_32;
@ -1582,6 +1553,18 @@ elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
break;
}
/* ??? Copied from elf32-i386.c, debugging section check and all. */
if (unresolved_reloc
&& !(info->shared
&& (input_section->flags & SEC_DEBUGGING) != 0
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
(*_bfd_error_handler)
(_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
bfd_archive_filename (input_bfd),
bfd_get_section_name (input_bfd, input_section),
(long) rel->r_offset,
h->root.root.string);
r = bfd_reloc_continue;
if (r_type == R_SPARC_WDISP16)
{

164
bfd/elf64-sparc.c
View File

@ -1881,6 +1881,17 @@ sparc64_elf_relax_section (abfd, section, link_info, again)
return true;
}
/* This is the condition under which finish_dynamic_symbol will be called
from elflink.h. If elflink.h doesn't call our finish_dynamic_symbol
routine, we'll need to do something about initializing any .plt and
.got entries in relocate_section. */
#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
((DYN) \
&& ((INFO)->shared \
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
&& ((H)->dynindx != -1 \
|| ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
/* Relocate a SPARC64 ELF section. */
static boolean
@ -1928,9 +1939,10 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
asection *sec;
bfd_vma relocation;
bfd_vma relocation, off;
bfd_reloc_status_type r;
boolean is_plt = false;
boolean unresolved_reloc;
r_type = ELF64_R_TYPE_ID (rel->r_info);
if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
@ -1965,6 +1977,7 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
h = NULL;
sym = NULL;
sec = NULL;
unresolved_reloc = false;
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
@ -1977,116 +1990,30 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
h = (struct elf_link_hash_entry *) h->root.u.i.link;
relocation = 0;
if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
{
boolean skip_it = false;
sec = h->root.u.def.section;
switch (r_type)
{
case R_SPARC_WPLT30:
case R_SPARC_PLT32:
case R_SPARC_HIPLT22:
case R_SPARC_LOPLT10:
case R_SPARC_PCPLT32:
case R_SPARC_PCPLT22:
case R_SPARC_PCPLT10:
case R_SPARC_PLT64:
if (h->plt.offset != (bfd_vma) -1)
skip_it = true;
break;
case R_SPARC_GOT10:
case R_SPARC_GOT13:
case R_SPARC_GOT22:
if (elf_hash_table(info)->dynamic_sections_created
&& (!info->shared
|| (!info->symbolic && h->dynindx != -1)
|| !(h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR)))
skip_it = true;
break;
case R_SPARC_PC10:
case R_SPARC_PC22:
case R_SPARC_PC_HH22:
case R_SPARC_PC_HM10:
case R_SPARC_PC_LM22:
if (!strcmp(h->root.root.string, "_GLOBAL_OFFSET_TABLE_"))
break;
/* FALLTHRU */
case R_SPARC_8:
case R_SPARC_16:
case R_SPARC_32:
case R_SPARC_DISP8:
case R_SPARC_DISP16:
case R_SPARC_DISP32:
case R_SPARC_WDISP30:
case R_SPARC_WDISP22:
case R_SPARC_HI22:
case R_SPARC_22:
case R_SPARC_13:
case R_SPARC_LO10:
case R_SPARC_UA32:
case R_SPARC_10:
case R_SPARC_11:
case R_SPARC_64:
case R_SPARC_OLO10:
case R_SPARC_HH22:
case R_SPARC_HM10:
case R_SPARC_LM22:
case R_SPARC_WDISP19:
case R_SPARC_WDISP16:
case R_SPARC_7:
case R_SPARC_5:
case R_SPARC_6:
case R_SPARC_DISP64:
case R_SPARC_HIX22:
case R_SPARC_LOX10:
case R_SPARC_H44:
case R_SPARC_M44:
case R_SPARC_L44:
case R_SPARC_UA64:
case R_SPARC_UA16:
if (info->shared
&& ((!info->symbolic && h->dynindx != -1)
|| !(h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR))
&& ((input_section->flags & SEC_ALLOC) != 0
/* DWARF will emit R_SPARC_{32,64} relocations in
its sections against symbols defined externally
in shared libraries. We can't do anything
with them here. */
|| ((input_section->flags & SEC_DEBUGGING) != 0
&& (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC) != 0)))
skip_it = true;
break;
}
if (skip_it)
{
/* In these cases, we don't need the relocation
value. We check specially because in some
obscure cases sec->output_section will be NULL. */
relocation = 0;
}
if (sec->output_section == NULL)
/* Set a flag that will be cleared later if we find a
relocation value for this symbol. output_section
is typically NULL for symbols satisfied by a shared
library. */
unresolved_reloc = true;
else
{
relocation = (h->root.u.def.value
+ sec->output_section->vma
+ sec->output_offset);
}
relocation = (h->root.u.def.value
+ sec->output_section->vma
+ sec->output_offset);
}
else if (h->root.type == bfd_link_hash_undefweak)
relocation = 0;
;
else if (info->shared
&& (!info->symbolic || info->allow_shlib_undefined)
&& !info->no_undefined
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
relocation = 0;
;
else
{
if (! ((*info->callbacks->undefined_symbol)
@ -2107,7 +2034,7 @@ sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
}
}
do_dynreloc:
do_dynreloc:
/* When generating a shared object, these relocations are copied
into the output file to be resolved at run time. */
if (info->shared && r_symndx != 0 && (input_section->flags & SEC_ALLOC))
@ -2326,14 +2253,18 @@ do_dynreloc:
if (h != NULL)
{
bfd_vma off = h->got.offset;
BFD_ASSERT (off != (bfd_vma) -1);
boolean dyn;
if (! elf_hash_table (info)->dynamic_sections_created
off = h->got.offset;
BFD_ASSERT (off != (bfd_vma) -1);
dyn = elf_hash_table (info)->dynamic_sections_created;
if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
|| (info->shared
&& (info->symbolic || h->dynindx == -1)
&& (h->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR)))
&& (info->symbolic
|| h->dynindx == -1
|| (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
{
/* This is actually a static link, or it is a -Bsymbolic
link and the symbol is defined locally, or the symbol
@ -2356,12 +2287,11 @@ do_dynreloc:
h->got.offset |= 1;
}
}
relocation = sgot->output_offset + off - got_base;
else
unresolved_reloc = false;
}
else
{
bfd_vma off;
BFD_ASSERT (local_got_offsets != NULL);
off = local_got_offsets[r_symndx];
BFD_ASSERT (off != (bfd_vma) -1);
@ -2407,8 +2337,8 @@ do_dynreloc:
else
bfd_put_64 (output_bfd, relocation, sgot->contents + off);
}
relocation = sgot->output_offset + off - got_base;
}
relocation = sgot->output_offset + off - got_base;
goto do_default;
case R_SPARC_WPLT30:
@ -2440,6 +2370,7 @@ do_dynreloc:
relocation = (splt->output_section->vma
+ splt->output_offset
+ sparc64_elf_plt_entry_offset (h->plt.offset));
unresolved_reloc = false;
if (r_type == R_SPARC_WPLT30)
goto do_wplt30;
if (r_type == R_SPARC_PLT32 || r_type == R_SPARC_PLT64)
@ -2623,6 +2554,17 @@ do_dynreloc:
break;
}
if (unresolved_reloc
&& !(info->shared
&& (input_section->flags & SEC_DEBUGGING) != 0
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
(*_bfd_error_handler)
(_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
bfd_archive_filename (input_bfd),
bfd_get_section_name (input_bfd, input_section),
(long) rel->r_offset,
h->root.root.string);
switch (r)
{
case bfd_reloc_ok: