bfd/elf-linker-x86.h

   1 /* x86-specific ELF linker support between ld and bfd.
   2    Copyright (C) 2019 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 /* Used to pass x86-specific linker options from ld to bfd.  */
  22 struct elf_linker_x86_params
  23 {
  24   /* TRUE if BND prefix in PLT entries is always generated.  */
  25   unsigned int bndplt: 1;
  26
  27   /* TRUE if IBT-enabled PLT entries should be generated.  */
  28   unsigned int ibtplt: 1;
  29
  30   /* TRUE if GNU_PROPERTY_X86_FEATURE_1_IBT should be generated.  */
  31   unsigned int ibt: 1;
  32
  33   /* TRUE if GNU_PROPERTY_X86_FEATURE_1_SHSTK should be generated.  */
  34   unsigned int shstk: 1;
  35
  36   /* TRUE if we shouldn't check relocation overflow.  */
  37   unsigned int no_reloc_overflow_check: 1;
  38
  39   /* TRUE if generate a 1-byte NOP as suffix for x86 call instruction.  */
  40   unsigned int call_nop_as_suffix : 1;
  41
  42   /* The 1-byte NOP for x86 call instruction.  */
  43   char call_nop_byte;
  44 };
  45
  46 extern void _bfd_elf_linker_x86_set_options
  47   (struct bfd_link_info *, struct elf_linker_x86_params *);