/* SPARC ELF specific backend routines.
   Copyright 2005, 2006, 2007, 2009, 2010, 2011
   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 3 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 *sdynbss;
  asection *srelbss;

  union
  {
    bfd_signed_vma refcount;
    bfd_vma offset;
  } tls_ldm_got;

  /* Small local sym cache.  */
  struct sym_cache sym_cache;

  /* Used by local STT_GNU_IFUNC symbols.  */
  htab_t loc_hash_table;
  void *loc_hash_memory;

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

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

  void (*put_word) (bfd *, bfd_vma, void *);
  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) \
  (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
  == SPARC_ELF_DATA ? ((struct _bfd_sparc_elf_link_hash_table *) ((p)->hash)) : NULL)

extern reloc_howto_type *_bfd_sparc_elf_reloc_type_lookup
  (bfd *, bfd_reloc_code_real_type);
extern reloc_howto_type *_bfd_sparc_elf_reloc_name_lookup
  (bfd *, const char *);
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 void _bfd_sparc_elf_link_hash_table_free
  (struct bfd_link_hash_table *);
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 *);
extern bfd_boolean _bfd_sparc_elf_merge_private_bfd_data
  (bfd *, bfd *);