bfd/elf32-ppc.h

   1 /* PowerPC-specific support for 64-bit ELF.
   2    Copyright (C) 2003-2020 Free Software Foundation, Inc.
   3
   4    This file is part of BFD, the Binary File Descriptor library.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19    MA 02110-1301, USA.  */
  20
  21 enum ppc_elf_plt_type
  22 {
  23   PLT_UNSET,
  24   PLT_OLD,
  25   PLT_NEW,
  26   PLT_VXWORKS
  27 };
  28
  29 /* Various options passed from the linker to bfd backend.  */
  30 struct ppc_elf_params
  31 {
  32   /* Chooses the type of .plt.  */
  33   enum ppc_elf_plt_type plt_style;
  34
  35   /* Set if individual PLT call stubs should be aligned.  */
  36   int plt_stub_align;
  37
  38   /* Whether to emit symbols for stubs.  */
  39   int emit_stub_syms;
  40
  41   /* Whether to emit special stub for __tls_get_addr calls.  */
  42   int no_tls_get_addr_opt;
  43
  44   /* Insert trampolines for branches that won't reach their destination.  */
  45   int branch_trampolines;
  46
  47   /* Avoid execution falling into new page.  */
  48   int ppc476_workaround;
  49   unsigned int pagesize_p2;
  50
  51   /* The bfd backend detected a non-PIC reference to a protected symbol
  52      defined in a shared library.  */
  53   int pic_fixup;
  54
  55   /* Relocate 16A relocs as 16D and vice versa.  */
  56   int vle_reloc_fixup;
  57
  58   bfd_vma pagesize;
  59 };
  60
  61 void ppc_elf_link_params (struct bfd_link_info *, struct ppc_elf_params *);
  62 int ppc_elf_select_plt_layout (bfd *, struct bfd_link_info *);
  63 bfd_boolean ppc_elf_inline_plt (struct bfd_link_info *);
  64 asection *ppc_elf_tls_setup (bfd *, struct bfd_link_info *);
  65 bfd_boolean ppc_elf_tls_optimize (bfd *, struct bfd_link_info *);
  66 void ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *);
  67 extern bfd_boolean ppc_elf_modify_segment_map (bfd *, struct bfd_link_info *);
  68 extern bfd_boolean ppc_elf_section_processing (bfd *, Elf_Internal_Shdr *);
  69 extern bfd_boolean ppc_finish_symbols (struct bfd_link_info *);