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[deliverable/binutils-gdb.git] / bfd / elf64-ppc.h

/* PowerPC64-specific support for 64-bit ELF.
   Copyright 2002, 2003, 2004, 2005, 2007, 2008, 2010, 2011, 2012
   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.  */

/* Used to pass info between ld and bfd.  */
struct ppc64_elf_params
{
  /* Linker stub bfd.  */
  bfd *stub_bfd;

  /* Linker call-backs.  */
  asection * (*add_stub_section) (const char *, asection *);
  void (*layout_sections_again) (void);

  /* Maximum size of a group of input sections that can be handled by
     one stub section.  A value of +/-1 indicates the bfd back-end
     should use a suitable default size.  */
  bfd_signed_vma group_size;

  /* Whether to use a special call stub for __tls_get_addr.  */
  int no_tls_get_addr_opt;

  /* Whether to allow multiple toc sections.  */
  int no_multi_toc;

  /* Set if PLT call stubs should load r11.  */
  int plt_static_chain;

  /* Set if PLT call stubs need to be thread safe on power7+.  */
  int plt_thread_safe;

  /* Set if individual PLT call stubs should be aligned.  */
  int plt_stub_align;

  /* Whether to canonicalize .opd so that there are no overlapping
     .opd entries.  */
  int non_overlapping_opd;

  /* Whether to emit symbols for stubs.  */
  int emit_stub_syms;

  /* Whether to generate out-of-line register save/restore for gcc -Os code.  */
  int save_restore_funcs;
};

bfd_boolean ppc64_elf_init_stub_bfd
  (struct bfd_link_info *, struct ppc64_elf_params *);
bfd_boolean ppc64_elf_edit_opd
  (struct bfd_link_info *);
asection *ppc64_elf_tls_setup
  (struct bfd_link_info *);
bfd_boolean ppc64_elf_tls_optimize
  (struct bfd_link_info *);
bfd_boolean ppc64_elf_edit_toc
  (struct bfd_link_info *);
bfd_boolean ppc64_elf_has_small_toc_reloc
  (asection *);
bfd_vma ppc64_elf_set_toc
(struct bfd_link_info *, bfd *);
int ppc64_elf_setup_section_lists
  (struct bfd_link_info *);
void ppc64_elf_start_multitoc_partition
  (struct bfd_link_info *);
bfd_boolean ppc64_elf_next_toc_section
  (struct bfd_link_info *, asection *);
bfd_boolean ppc64_elf_layout_multitoc
  (struct bfd_link_info *);
void ppc64_elf_finish_multitoc_partition
  (struct bfd_link_info *);
bfd_boolean ppc64_elf_check_init_fini
  (struct bfd_link_info *);
bfd_boolean ppc64_elf_next_input_section
  (struct bfd_link_info *, asection *);
bfd_boolean ppc64_elf_size_stubs
(struct bfd_link_info *);
bfd_boolean ppc64_elf_build_stubs
  (struct bfd_link_info *, char **);
void ppc64_elf_restore_symbols
  (struct bfd_link_info *info);