/* SPARC-specific support for 64-bit ELF
Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
- 2003 Free Software Foundation, Inc.
+ 2003, 2004 Free Software Foundation, Inc.
-This file is part of BFD, the Binary File Descriptor library.
+ This file is part of BFD, the Binary File Descriptor library.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "bfd.h"
#include "sysdep.h"
static int sparc64_elf_get_symbol_type
PARAMS (( Elf_Internal_Sym *, int));
static bfd_boolean sparc64_elf_add_symbol_hook
- PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
+ PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Sym *,
const char **, flagword *, asection **, bfd_vma *));
static bfd_boolean sparc64_elf_output_arch_syms
PARAMS ((bfd *, struct bfd_link_info *, PTR,
- bfd_boolean (*) (PTR, const char *, Elf_Internal_Sym *, asection *)));
+ bfd_boolean (*) (PTR, const char *, Elf_Internal_Sym *,
+ asection *, struct elf_link_hash_entry *)));
static void sparc64_elf_symbol_processing
PARAMS ((bfd *, asymbol *));
PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, asymbol **, bfd_boolean));
static bfd_boolean sparc64_elf_slurp_reloc_table
PARAMS ((bfd *, asection *, asymbol **, bfd_boolean));
+static long sparc64_elf_canonicalize_reloc
+ PARAMS ((bfd *, asection *, arelent **, asymbol **));
static long sparc64_elf_canonicalize_dynamic_reloc
PARAMS ((bfd *, arelent **, asymbol **));
static void sparc64_elf_write_relocs PARAMS ((bfd *, asection *, PTR));
cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (dst->r_info)];
}
\f
+struct sparc64_elf_section_data
+{
+ struct bfd_elf_section_data elf;
+ unsigned int do_relax, reloc_count;
+};
+
+#define sec_do_relax(sec) \
+ ((struct sparc64_elf_section_data *) elf_section_data (sec))->do_relax
+#define canon_reloc_count(sec) \
+ ((struct sparc64_elf_section_data *) elf_section_data (sec))->reloc_count
+
/* Due to the way how we handle R_SPARC_OLO10, each entry in a SHT_RELA
section can represent up to two relocs, we must tell the user to allocate
more space. */
native_relocs = (bfd_byte *) allocated;
- relents = asect->relocation + asect->reloc_count;
+ relents = asect->relocation + canon_reloc_count (asect);
entsize = rel_hdr->sh_entsize;
BFD_ASSERT (entsize == sizeof (Elf64_External_Rela));
relent->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (rela.r_info)];
}
- asect->reloc_count += relent - relents;
+ canon_reloc_count (asect) += relent - relents;
if (allocated != NULL)
free (allocated);
if (asect->relocation == NULL)
return FALSE;
- /* The sparc64_elf_slurp_one_reloc_table routine increments reloc_count. */
- asect->reloc_count = 0;
+ /* The sparc64_elf_slurp_one_reloc_table routine increments
+ canon_reloc_count. */
+ canon_reloc_count (asect) = 0;
if (!sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols,
dynamic))
return TRUE;
}
+/* Canonicalize the relocs. */
+
+static long
+sparc64_elf_canonicalize_reloc (abfd, section, relptr, symbols)
+ bfd *abfd;
+ sec_ptr section;
+ arelent **relptr;
+ asymbol **symbols;
+{
+ arelent *tblptr;
+ unsigned int i;
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+
+ if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE))
+ return -1;
+
+ tblptr = section->relocation;
+ for (i = 0; i < canon_reloc_count (section); i++)
+ *relptr++ = tblptr++;
+
+ *relptr = NULL;
+
+ return canon_reloc_count (section);
+}
+
+
/* Canonicalize the dynamic relocation entries. Note that we return
the dynamic relocations as a single block, although they are
actually associated with particular sections; the interface, which
if (! sparc64_elf_slurp_reloc_table (abfd, s, syms, TRUE))
return -1;
- count = s->reloc_count;
+ count = canon_reloc_count (s);
p = s->relocation;
for (i = 0; i < count; i++)
*storage++ = p++;
asection *srelgot;
asection *sreloc;
- if (info->relocateable || !(sec->flags & SEC_ALLOC))
+ if (info->relocatable || !(sec->flags & SEC_ALLOC))
return TRUE;
dynobj = elf_hash_table (info)->dynobj;
/* Make sure this symbol is output as a dynamic symbol. */
if (h->dynindx == -1)
{
- if (! bfd_elf64_link_record_dynamic_symbol (info, h))
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
/* Make sure this symbol is output as a dynamic symbol. */
if (h->dynindx == -1)
{
- if (! bfd_elf64_link_record_dynamic_symbol (info, h))
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
sparc64_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
bfd *abfd;
struct bfd_link_info *info;
- const Elf_Internal_Sym *sym;
+ Elf_Internal_Sym *sym;
const char **namep;
flagword *flagsp ATTRIBUTE_UNUSED;
asection **secp ATTRIBUTE_UNUSED;
return TRUE;
}
-/* This function takes care of emiting STT_REGISTER symbols
+/* This function takes care of emitting STT_REGISTER symbols
which we cannot easily keep in the symbol hash table. */
static bfd_boolean
struct bfd_link_info *info;
PTR finfo;
bfd_boolean (*func)
- PARAMS ((PTR, const char *, Elf_Internal_Sym *, asection *));
+ PARAMS ((PTR, const char *, Elf_Internal_Sym *, asection *,
+ struct elf_link_hash_entry *));
{
int reg;
struct sparc64_elf_app_reg *app_regs =
sym.st_shndx = app_regs [reg].shndx;
if (! (*func) (finfo, app_regs [reg].name, &sym,
sym.st_shndx == SHN_ABS
- ? bfd_abs_section_ptr : bfd_und_section_ptr))
+ ? bfd_abs_section_ptr : bfd_und_section_ptr,
+ NULL))
return FALSE;
}
if (elf_hash_table (info)->dynamic_sections_created)
{
/* Set the contents of the .interp section to the interpreter. */
- if (! info->shared)
+ if (info->executable)
{
s = bfd_get_section_by_name (dynobj, ".interp");
BFD_ASSERT (s != NULL);
the .dynamic section. The DT_DEBUG entry is filled in by the
dynamic linker and used by the debugger. */
#define add_dynamic_entry(TAG, VAL) \
- bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
+ _bfd_elf_add_dynamic_entry (info, TAG, VAL)
int reg;
struct sparc64_elf_app_reg * app_regs;
struct elf_strtab_hash *dynstr;
struct elf_link_hash_table *eht = elf_hash_table (info);
- if (!info->shared)
+ if (info->executable)
{
if (!add_dynamic_entry (DT_DEBUG, 0))
return FALSE;
return TRUE;
}
\f
-struct sparc64_elf_section_data
-{
- struct bfd_elf_section_data elf;
- unsigned int do_relax;
-};
-
-#define sec_do_relax(sec) \
- ((struct sparc64_elf_section_data *) elf_section_data (sec))->do_relax
-
static bfd_boolean
sparc64_elf_new_section_hook (abfd, sec)
bfd *abfd;
return TRUE;
}
\f
-/* 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 bfd_boolean
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
- if (info->relocateable)
+ if (info->relocatable)
return TRUE;
dynobj = elf_hash_table (info)->dynobj;
got_base = elf_hash_table (info)->hgot->root.u.def.value;
sgot = splt = sreloc = NULL;
+ if (dynobj != NULL)
+ splt = bfd_get_section_by_name (dynobj, ".plt");
rel = relocs;
relend = relocs + NUM_SHDR_ENTRIES (& elf_section_data (input_section)->rel_hdr);
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
- relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
}
else
{
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- 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;
+ bfd_boolean warned;
- relocation = 0;
- if (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- sec = h->root.u.def.section;
- 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)
- ;
- else if (info->shared
- && (!info->symbolic || info->allow_shlib_undefined)
- && !info->no_undefined
- && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
- ;
- else
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned);
+ if (warned)
{
- if (! ((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd,
- input_section, rel->r_offset,
- (!info->shared || info->no_undefined
- || ELF_ST_VISIBILITY (h->other)))))
- return FALSE;
-
/* To avoid generating warning messages about truncated
relocations, set the relocation's address to be the same as
the start of this section. */
-
if (input_section->output_section != NULL)
relocation = input_section->output_section->vma;
else
break;
}
+ /* FIXME: Dynamic reloc handling really needs to be rewritten. */
+ if (!skip
+ && h != NULL
+ && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ && h->root.type == bfd_link_hash_undefweak)
+ skip = TRUE, relocate = TRUE;
+
if (skip)
memset (&outrel, 0, sizeof outrel);
/* h->dynindx may be -1 if the symbol was marked to
if (is_plt)
sec = splt;
- else if (h == NULL)
- sec = local_sections[r_symndx];
- else
- {
- BFD_ASSERT (h->root.type == bfd_link_hash_defined
- || (h->root.type
- == bfd_link_hash_defweak));
- sec = h->root.u.def.section;
- }
- if (sec != NULL && bfd_is_abs_section (sec))
+
+ if (bfd_is_abs_section (sec))
indx = 0;
else if (sec == NULL || sec->owner == NULL)
{
BFD_ASSERT (off != (bfd_vma) -1);
dyn = elf_hash_table (info)->dynamic_sections_created;
- if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
+ if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
|| (info->shared
&& (info->symbolic
|| h->dynindx == -1
procedure linkage table. */
BFD_ASSERT (h != NULL);
- if (h->plt.offset == (bfd_vma) -1)
+ if (h->plt.offset == (bfd_vma) -1 || splt == NULL)
{
/* We didn't make a PLT entry for this symbol. This
happens when statically linking PIC code, or when
goto do_default;
}
- if (splt == NULL)
- {
- splt = bfd_get_section_by_name (dynobj, ".plt");
- BFD_ASSERT (splt != NULL);
- }
-
relocation = (splt->output_section->vma
+ splt->output_offset
+ sparc64_elf_plt_entry_offset (h->plt.offset));
}
}
}
- /* FALLTHROUGH */
+ /* Fall through. */
default:
do_default:
overflows. We don't, but this breaks stabs debugging
info, whose relocations are only 32-bits wide. Ignore
overflows for discarded entries. */
- if (r_type == R_SPARC_32
+ if ((r_type == R_SPARC_32 || r_type == R_SPARC_DISP32)
&& _bfd_elf_section_offset (output_bfd, info, input_section,
rel->r_offset) == (bfd_vma) -1)
break;
bfd_byte *loc;
/* This symbols needs a copy reloc. Set it up. */
-
BFD_ASSERT (h->dynindx != -1);
s = bfd_get_section_by_name (h->root.u.def.section->owner,
/* Initialize the contents of the .plt section. */
if (splt->_raw_size > 0)
- {
- sparc64_elf_build_plt (output_bfd, splt->contents,
- (int) (splt->_raw_size / PLT_ENTRY_SIZE));
- }
+ sparc64_elf_build_plt (output_bfd, splt->contents,
+ (int) (splt->_raw_size / PLT_ENTRY_SIZE));
elf_section_data (splt->output_section)->this_hdr.sh_entsize =
PLT_ENTRY_SIZE;
return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
}
+/* Return address for Ith PLT stub in section PLT, for relocation REL
+ or (bfd_vma) -1 if it should not be included. */
+
+static bfd_vma
+sparc64_elf_plt_sym_val (bfd_vma i, const asection *plt,
+ const arelent *rel ATTRIBUTE_UNUSED)
+{
+ bfd_vma j;
+
+ i += PLT_HEADER_SIZE / PLT_ENTRY_SIZE;
+ if (i < LARGE_PLT_THRESHOLD)
+ return plt->vma + i * PLT_ENTRY_SIZE;
+
+ j = (i - LARGE_PLT_THRESHOLD) % 160;
+ i -= j;
+ return plt->vma + i * PLT_ENTRY_SIZE + j * 4 * 6;
+}
+
/* Relocations in the 64 bit SPARC ELF ABI are more complex than in
standard ELF, because R_SPARC_OLO10 has secondary addend in
ELF64_R_TYPE_DATA field. This structure is used to redirect the
sizeof (Elf64_External_Sym),
sizeof (Elf64_External_Dyn),
sizeof (Elf_External_Note),
- 4, /* hash-table entry size */
- /* internal relocations per external relocations.
+ 4, /* hash-table entry size. */
+ /* Internal relocations per external relocations.
For link purposes we use just 1 internal per
1 external, for assembly and slurp symbol table
we use 2. */
1,
- 64, /* arch_size */
- 8, /* file_align */
+ 64, /* arch_size. */
+ 3, /* log_file_align. */
ELFCLASS64,
EV_CURRENT,
bfd_elf64_write_out_phdrs,
sparc64_elf_get_reloc_upper_bound
#define bfd_elf64_get_dynamic_reloc_upper_bound \
sparc64_elf_get_dynamic_reloc_upper_bound
+#define bfd_elf64_canonicalize_reloc \
+ sparc64_elf_canonicalize_reloc
#define bfd_elf64_canonicalize_dynamic_reloc \
sparc64_elf_canonicalize_dynamic_reloc
#define bfd_elf64_bfd_reloc_type_lookup \
sparc64_elf_merge_private_bfd_data
#define elf_backend_fake_sections \
sparc64_elf_fake_sections
+#define elf_backend_plt_sym_val \
+ sparc64_elf_plt_sym_val
#define elf_backend_size_info \
sparc64_elf_size_info
#define elf_backend_plt_alignment 8
#define elf_backend_got_header_size 8
-#define elf_backend_plt_header_size PLT_HEADER_SIZE
#include "elf64-target.h"
projects / deliverable / binutils-gdb.git / blobdiff