/* SPARC ELF specific backend routines.
   Copyright 2005 Free Software Foundation, Inc.

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 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */

#include "elf/common.h"
#include "elf/internal.h"

struct _bfd_sparc_elf_section_data
{
  struct bfd_elf_section_data elf;
  unsigned int do_relax, reloc_count;
};

#define sec_do_relax(sec) \
  ((struct _bfd_sparc_elf_section_data *) elf_section_data (sec))->do_relax
#define canon_reloc_count(sec) \
  ((struct _bfd_sparc_elf_section_data *) elf_section_data (sec))->reloc_count

struct _bfd_sparc_elf_app_reg
{
  unsigned char bind;
  unsigned short shndx;
  bfd *abfd;
  char *name;
};

/* Sparc ELF linker hash table.  */

struct _bfd_sparc_elf_link_hash_table
{
  struct elf_link_hash_table elf;

  /* Short-cuts to get to dynamic linker sections.  */
  asection *sgot;
  asection *srelgot;
  asection *splt;
  asection *srelplt;
  asection *sdynbss;
  asection *srelbss;

  union {
    bfd_signed_vma refcount;
    bfd_vma offset;
  } tls_ldm_got;

  /* Small local sym to section mapping cache.  */
  struct sym_sec_cache sym_sec;

  /* True if the target system is VxWorks.  */
  int is_vxworks;

  /* The (unloaded but important) .rela.plt.unloaded section, for VxWorks.  */
  asection *srelplt2;

  /* .got.plt is only used on VxWorks.  */
  asection *sgotplt;

  void (*put_word) (bfd *, bfd_vma, void *);
  void (*append_rela) (bfd *, asection *, Elf_Internal_Rela *);
  bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma);
  bfd_vma (*r_symndx) (bfd_vma);
  int (*build_plt_entry) (bfd *, asection *, bfd_vma, bfd_vma, bfd_vma *);
  const char *dynamic_interpreter;
  int dynamic_interpreter_size;
  unsigned int word_align_power;
  unsigned int align_power_max;
  unsigned int plt_header_size;
  unsigned int plt_entry_size;
  int bytes_per_word;
  int bytes_per_rela;
  int dtpoff_reloc;
  int dtpmod_reloc;
  int tpoff_reloc;

  struct _bfd_sparc_elf_app_reg app_regs [4];
};

/* Get the SPARC ELF linker hash table from a link_info structure.  */

#define _bfd_sparc_elf_hash_table(p) \
  ((struct _bfd_sparc_elf_link_hash_table *) ((p)->hash))

extern reloc_howto_type *_bfd_sparc_elf_reloc_type_lookup
  (bfd *, bfd_reloc_code_real_type);
extern void _bfd_sparc_elf_info_to_howto
  (bfd *, arelent *, Elf_Internal_Rela *);
extern reloc_howto_type *_bfd_sparc_elf_info_to_howto_ptr
  (unsigned int);
extern bfd_boolean _bfd_sparc_elf_mkobject
  (bfd *);
extern struct bfd_link_hash_table *_bfd_sparc_elf_link_hash_table_create
  (bfd *);
extern bfd_boolean _bfd_sparc_elf_create_dynamic_sections
  (bfd *, struct bfd_link_info *);
extern void _bfd_sparc_elf_copy_indirect_symbol
  (struct bfd_link_info *,
   struct elf_link_hash_entry *,
   struct elf_link_hash_entry *);
extern bfd_boolean _bfd_sparc_elf_check_relocs
  (bfd *, struct bfd_link_info *,
   asection *, const Elf_Internal_Rela *);
extern asection *_bfd_sparc_elf_gc_mark_hook
  (asection *, struct bfd_link_info *,
   Elf_Internal_Rela *, struct elf_link_hash_entry *,
   Elf_Internal_Sym *);
extern bfd_boolean _bfd_sparc_elf_gc_sweep_hook
  (bfd *, struct bfd_link_info *,
   asection *, const Elf_Internal_Rela *);
extern bfd_boolean _bfd_sparc_elf_adjust_dynamic_symbol
  (struct bfd_link_info *, struct elf_link_hash_entry *);
extern bfd_boolean _bfd_sparc_elf_omit_section_dynsym
  (bfd *, struct bfd_link_info *, asection *);
extern bfd_boolean _bfd_sparc_elf_size_dynamic_sections
  (bfd *, struct bfd_link_info *);
extern bfd_boolean _bfd_sparc_elf_new_section_hook
  (bfd *, asection *);
extern bfd_boolean _bfd_sparc_elf_relax_section
  (bfd *, struct bfd_section *, struct bfd_link_info *, bfd_boolean *);
extern bfd_boolean _bfd_sparc_elf_relocate_section
  (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
   Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
extern bfd_boolean _bfd_sparc_elf_finish_dynamic_symbol
  (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
   Elf_Internal_Sym *sym);
extern bfd_boolean _bfd_sparc_elf_finish_dynamic_sections
  (bfd *, struct bfd_link_info *);
extern bfd_boolean _bfd_sparc_elf_object_p
  (bfd *);
extern bfd_vma _bfd_sparc_elf_plt_sym_val
  (bfd_vma, const asection *, const arelent *);
