[thirdparty/binutils-gdb.git] / bfd / elf64-x86-64.c

/* X86-64 specific support for ELF
   Copyright (C) 2000-2018 Free Software Foundation, Inc.
   Contributed by Jan Hubicka <jh@suse.cz>.

   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 "elfxx-x86.h"
#include "elf-nacl.h"
#include "dwarf2.h"
#include "libiberty.h"

#include "opcode/i386.h"
#include "elf/x86-64.h"

#ifdef CORE_HEADER
#include <stdarg.h>
#include CORE_HEADER
#endif

/* In case we're on a 32-bit machine, construct a 64-bit "-1" value.  */
#define MINUS_ONE (~ (bfd_vma) 0)

/* Since both 32-bit and 64-bit x86-64 encode relocation type in the
   identical manner, we use ELF32_R_TYPE instead of ELF64_R_TYPE to get
   relocation type.  We also use ELF_ST_TYPE instead of ELF64_ST_TYPE
   since they are the same.  */

/* The relocation "howto" table.  Order of fields:
   type, rightshift, size, bitsize, pc_relative, bitpos, complain_on_overflow,
   special_function, name, partial_inplace, src_mask, dst_mask, pcrel_offset.  */
static reloc_howto_type x86_64_elf_howto_table[] =
{
  HOWTO(R_X86_64_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont,
        bfd_elf_generic_reloc, "R_X86_64_NONE", FALSE, 0x00000000, 0x00000000,
        FALSE),
  HOWTO(R_X86_64_64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_64", FALSE, MINUS_ONE, MINUS_ONE,
        FALSE),
  HOWTO(R_X86_64_PC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_PC32", FALSE, 0xffffffff, 0xffffffff,
        TRUE),
  HOWTO(R_X86_64_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_GOT32", FALSE, 0xffffffff, 0xffffffff,
        FALSE),
  HOWTO(R_X86_64_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_PLT32", FALSE, 0xffffffff, 0xffffffff,
        TRUE),
  HOWTO(R_X86_64_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_COPY", FALSE, 0xffffffff, 0xffffffff,
        FALSE),
  HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", FALSE, MINUS_ONE,
        MINUS_ONE, FALSE),
  HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", FALSE, MINUS_ONE,
        MINUS_ONE, FALSE),
  HOWTO(R_X86_64_RELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_RELATIVE", FALSE, MINUS_ONE,
        MINUS_ONE, FALSE),
  HOWTO(R_X86_64_GOTPCREL, 0, 2, 32, TRUE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", FALSE, 0xffffffff,
        0xffffffff, TRUE),
  HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
        bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
        FALSE),
  HOWTO(R_X86_64_32S, 0, 2, 32, FALSE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_32S", FALSE, 0xffffffff, 0xffffffff,
        FALSE),
  HOWTO(R_X86_64_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_16", FALSE, 0xffff, 0xffff, FALSE),
  HOWTO(R_X86_64_PC16,0, 1, 16, TRUE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_PC16", FALSE, 0xffff, 0xffff, TRUE),
  HOWTO(R_X86_64_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_8", FALSE, 0xff, 0xff, FALSE),
  HOWTO(R_X86_64_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_PC8", FALSE, 0xff, 0xff, TRUE),
  HOWTO(R_X86_64_DTPMOD64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_DTPMOD64", FALSE, MINUS_ONE,
        MINUS_ONE, FALSE),
  HOWTO(R_X86_64_DTPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_DTPOFF64", FALSE, MINUS_ONE,
        MINUS_ONE, FALSE),
  HOWTO(R_X86_64_TPOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_TPOFF64", FALSE, MINUS_ONE,
        MINUS_ONE, FALSE),
  HOWTO(R_X86_64_TLSGD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_TLSGD", FALSE, 0xffffffff,
        0xffffffff, TRUE),
  HOWTO(R_X86_64_TLSLD, 0, 2, 32, TRUE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_TLSLD", FALSE, 0xffffffff,
        0xffffffff, TRUE),
  HOWTO(R_X86_64_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_DTPOFF32", FALSE, 0xffffffff,
        0xffffffff, FALSE),
  HOWTO(R_X86_64_GOTTPOFF, 0, 2, 32, TRUE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_GOTTPOFF", FALSE, 0xffffffff,
        0xffffffff, TRUE),
  HOWTO(R_X86_64_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_TPOFF32", FALSE, 0xffffffff,
        0xffffffff, FALSE),
  HOWTO(R_X86_64_PC64, 0, 4, 64, TRUE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_PC64", FALSE, MINUS_ONE, MINUS_ONE,
        TRUE),
  HOWTO(R_X86_64_GOTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_GOTOFF64",
        FALSE, MINUS_ONE, MINUS_ONE, FALSE),
  HOWTO(R_X86_64_GOTPC32, 0, 2, 32, TRUE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_GOTPC32",
        FALSE, 0xffffffff, 0xffffffff, TRUE),
  HOWTO(R_X86_64_GOT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_GOT64", FALSE, MINUS_ONE, MINUS_ONE,
        FALSE),
  HOWTO(R_X86_64_GOTPCREL64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_GOTPCREL64", FALSE, MINUS_ONE,
        MINUS_ONE, TRUE),
  HOWTO(R_X86_64_GOTPC64, 0, 4, 64, TRUE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_GOTPC64",
        FALSE, MINUS_ONE, MINUS_ONE, TRUE),
  HOWTO(R_X86_64_GOTPLT64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_GOTPLT64", FALSE, MINUS_ONE,
        MINUS_ONE, FALSE),
  HOWTO(R_X86_64_PLTOFF64, 0, 4, 64, FALSE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_PLTOFF64", FALSE, MINUS_ONE,
        MINUS_ONE, FALSE),
  HOWTO(R_X86_64_SIZE32, 0, 2, 32, FALSE, 0, complain_overflow_unsigned,
        bfd_elf_generic_reloc, "R_X86_64_SIZE32", FALSE, 0xffffffff, 0xffffffff,
        FALSE),
  HOWTO(R_X86_64_SIZE64, 0, 4, 64, FALSE, 0, complain_overflow_unsigned,
        bfd_elf_generic_reloc, "R_X86_64_SIZE64", FALSE, MINUS_ONE, MINUS_ONE,
        FALSE),
  HOWTO(R_X86_64_GOTPC32_TLSDESC, 0, 2, 32, TRUE, 0,
        complain_overflow_bitfield, bfd_elf_generic_reloc,
        "R_X86_64_GOTPC32_TLSDESC",
        FALSE, 0xffffffff, 0xffffffff, TRUE),
  HOWTO(R_X86_64_TLSDESC_CALL, 0, 0, 0, FALSE, 0,
        complain_overflow_dont, bfd_elf_generic_reloc,
        "R_X86_64_TLSDESC_CALL",
        FALSE, 0, 0, FALSE),
  HOWTO(R_X86_64_TLSDESC, 0, 4, 64, FALSE, 0,
        complain_overflow_bitfield, bfd_elf_generic_reloc,
        "R_X86_64_TLSDESC",
        FALSE, MINUS_ONE, MINUS_ONE, FALSE),
  HOWTO(R_X86_64_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_IRELATIVE", FALSE, MINUS_ONE,
        MINUS_ONE, FALSE),
  HOWTO(R_X86_64_RELATIVE64, 0, 4, 64, FALSE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_RELATIVE64", FALSE, MINUS_ONE,
        MINUS_ONE, FALSE),
  HOWTO(R_X86_64_PC32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_PC32_BND", FALSE, 0xffffffff, 0xffffffff,
        TRUE),
  HOWTO(R_X86_64_PLT32_BND, 0, 2, 32, TRUE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_PLT32_BND", FALSE, 0xffffffff, 0xffffffff,
        TRUE),
  HOWTO(R_X86_64_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_GOTPCRELX", FALSE, 0xffffffff,
        0xffffffff, TRUE),
  HOWTO(R_X86_64_REX_GOTPCRELX, 0, 2, 32, TRUE, 0, complain_overflow_signed,
        bfd_elf_generic_reloc, "R_X86_64_REX_GOTPCRELX", FALSE, 0xffffffff,
        0xffffffff, TRUE),

  /* We have a gap in the reloc numbers here.
     R_X86_64_standard counts the number up to this point, and
     R_X86_64_vt_offset is the value to subtract from a reloc type of
     R_X86_64_GNU_VT* to form an index into this table.  */
#define R_X86_64_standard (R_X86_64_REX_GOTPCRELX + 1)
#define R_X86_64_vt_offset (R_X86_64_GNU_VTINHERIT - R_X86_64_standard)

/* GNU extension to record C++ vtable hierarchy.  */
  HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, FALSE, 0, complain_overflow_dont,
         NULL, "R_X86_64_GNU_VTINHERIT", FALSE, 0, 0, FALSE),

/* GNU extension to record C++ vtable member usage.  */
  HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont,
         _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0,
         FALSE),

/* Use complain_overflow_bitfield on R_X86_64_32 for x32.  */
  HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
        bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
        FALSE)
};

/* Set if a relocation is converted from a GOTPCREL relocation.  */
#define R_X86_64_converted_reloc_bit (1 << 7)

#define X86_PCREL_TYPE_P(TYPE)          \
  (   ((TYPE) == R_X86_64_PC8)          \
   || ((TYPE) == R_X86_64_PC16)         \
   || ((TYPE) == R_X86_64_PC32)         \
   || ((TYPE) == R_X86_64_PC32_BND)     \
   || ((TYPE) == R_X86_64_PC64))

#define X86_SIZE_TYPE_P(TYPE)           \
  ((TYPE) == R_X86_64_SIZE32 || (TYPE) == R_X86_64_SIZE64)

/* Map BFD relocs to the x86_64 elf relocs.  */
struct elf_reloc_map
{
  bfd_reloc_code_real_type bfd_reloc_val;
  unsigned char elf_reloc_val;
};

static const struct elf_reloc_map x86_64_reloc_map[] =
{
  { BFD_RELOC_NONE,             R_X86_64_NONE, },
  { BFD_RELOC_64,               R_X86_64_64,   },
  { BFD_RELOC_32_PCREL,         R_X86_64_PC32, },
  { BFD_RELOC_X86_64_GOT32,     R_X86_64_GOT32,},
  { BFD_RELOC_X86_64_PLT32,     R_X86_64_PLT32,},
  { BFD_RELOC_X86_64_COPY,      R_X86_64_COPY, },
  { BFD_RELOC_X86_64_GLOB_DAT,  R_X86_64_GLOB_DAT, },
  { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, },
  { BFD_RELOC_X86_64_RELATIVE,  R_X86_64_RELATIVE, },
  { BFD_RELOC_X86_64_GOTPCREL,  R_X86_64_GOTPCREL, },
  { BFD_RELOC_32,               R_X86_64_32, },
  { BFD_RELOC_X86_64_32S,       R_X86_64_32S, },
  { BFD_RELOC_16,               R_X86_64_16, },
  { BFD_RELOC_16_PCREL,         R_X86_64_PC16, },
  { BFD_RELOC_8,                R_X86_64_8, },
  { BFD_RELOC_8_PCREL,          R_X86_64_PC8, },
  { BFD_RELOC_X86_64_DTPMOD64,  R_X86_64_DTPMOD64, },
  { BFD_RELOC_X86_64_DTPOFF64,  R_X86_64_DTPOFF64, },
  { BFD_RELOC_X86_64_TPOFF64,   R_X86_64_TPOFF64, },
  { BFD_RELOC_X86_64_TLSGD,     R_X86_64_TLSGD, },
  { BFD_RELOC_X86_64_TLSLD,     R_X86_64_TLSLD, },
  { BFD_RELOC_X86_64_DTPOFF32,  R_X86_64_DTPOFF32, },
  { BFD_RELOC_X86_64_GOTTPOFF,  R_X86_64_GOTTPOFF, },
  { BFD_RELOC_X86_64_TPOFF32,   R_X86_64_TPOFF32, },
  { BFD_RELOC_64_PCREL,         R_X86_64_PC64, },
  { BFD_RELOC_X86_64_GOTOFF64,  R_X86_64_GOTOFF64, },
  { BFD_RELOC_X86_64_GOTPC32,   R_X86_64_GOTPC32, },
  { BFD_RELOC_X86_64_GOT64,     R_X86_64_GOT64, },
  { BFD_RELOC_X86_64_GOTPCREL64,R_X86_64_GOTPCREL64, },
  { BFD_RELOC_X86_64_GOTPC64,   R_X86_64_GOTPC64, },
  { BFD_RELOC_X86_64_GOTPLT64,  R_X86_64_GOTPLT64, },
  { BFD_RELOC_X86_64_PLTOFF64,  R_X86_64_PLTOFF64, },
  { BFD_RELOC_SIZE32,           R_X86_64_SIZE32, },
  { BFD_RELOC_SIZE64,           R_X86_64_SIZE64, },
  { BFD_RELOC_X86_64_GOTPC32_TLSDESC, R_X86_64_GOTPC32_TLSDESC, },
  { BFD_RELOC_X86_64_TLSDESC_CALL, R_X86_64_TLSDESC_CALL, },
  { BFD_RELOC_X86_64_TLSDESC,   R_X86_64_TLSDESC, },
  { BFD_RELOC_X86_64_IRELATIVE, R_X86_64_IRELATIVE, },
  { BFD_RELOC_X86_64_PC32_BND,  R_X86_64_PC32_BND, },
  { BFD_RELOC_X86_64_PLT32_BND, R_X86_64_PLT32_BND, },
  { BFD_RELOC_X86_64_GOTPCRELX, R_X86_64_GOTPCRELX, },
  { BFD_RELOC_X86_64_REX_GOTPCRELX, R_X86_64_REX_GOTPCRELX, },
  { BFD_RELOC_VTABLE_INHERIT,   R_X86_64_GNU_VTINHERIT, },
  { BFD_RELOC_VTABLE_ENTRY,     R_X86_64_GNU_VTENTRY, },
};

static reloc_howto_type *
elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type)
{
  unsigned i;

  if (r_type == (unsigned int) R_X86_64_32)
    {
      if (ABI_64_P (abfd))
        i = r_type;
      else
        i = ARRAY_SIZE (x86_64_elf_howto_table) - 1;
    }
  else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
           || r_type >= (unsigned int) R_X86_64_max)
    {
      if (r_type >= (unsigned int) R_X86_64_standard)
        {
          /* xgettext:c-format */
          _bfd_error_handler (_("%pB: invalid relocation type %d"),
                              abfd, (int) r_type);
          r_type = R_X86_64_NONE;
        }
      i = r_type;
    }
  else
    i = r_type - (unsigned int) R_X86_64_vt_offset;
  BFD_ASSERT (x86_64_elf_howto_table[i].type == r_type);
  return &x86_64_elf_howto_table[i];
}

/* Given a BFD reloc type, return a HOWTO structure.  */
static reloc_howto_type *
elf_x86_64_reloc_type_lookup (bfd *abfd,
                              bfd_reloc_code_real_type code)
{
  unsigned int i;

  for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map);
       i++)
    {
      if (x86_64_reloc_map[i].bfd_reloc_val == code)
        return elf_x86_64_rtype_to_howto (abfd,
                                          x86_64_reloc_map[i].elf_reloc_val);
    }
  return NULL;
}

static reloc_howto_type *
elf_x86_64_reloc_name_lookup (bfd *abfd,
                              const char *r_name)
{
  unsigned int i;

  if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0)
    {
      /* Get x32 R_X86_64_32.  */
      reloc_howto_type *reloc
        = &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1];
      BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32);
      return reloc;
    }

  for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++)
    if (x86_64_elf_howto_table[i].name != NULL
        && strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0)
      return &x86_64_elf_howto_table[i];

  return NULL;
}

/* Given an x86_64 ELF reloc type, fill in an arelent structure.  */

static void
elf_x86_64_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
                          Elf_Internal_Rela *dst)
{
  unsigned r_type;

  r_type = ELF32_R_TYPE (dst->r_info);
  if (r_type != (unsigned int) R_X86_64_GNU_VTINHERIT
      && r_type != (unsigned int) R_X86_64_GNU_VTENTRY)
    r_type &= ~R_X86_64_converted_reloc_bit;
  cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type);

  BFD_ASSERT (r_type == cache_ptr->howto->type || cache_ptr->howto->type == R_X86_64_NONE);
}
\f
/* Support for core dump NOTE sections.  */
static bfd_boolean
elf_x86_64_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
{
  int offset;
  size_t size;

  switch (note->descsz)
    {
      default:
        return FALSE;

      case 296:         /* sizeof(istruct elf_prstatus) on Linux/x32 */
        /* pr_cursig */
        elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);

        /* pr_pid */
        elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);

        /* pr_reg */
        offset = 72;
        size = 216;

        break;

      case 336:         /* sizeof(istruct elf_prstatus) on Linux/x86_64 */
        /* pr_cursig */
        elf_tdata (abfd)->core->signal
          = bfd_get_16 (abfd, note->descdata + 12);

        /* pr_pid */
        elf_tdata (abfd)->core->lwpid
          = bfd_get_32 (abfd, note->descdata + 32);

        /* pr_reg */
        offset = 112;
        size = 216;

        break;
    }

  /* Make a ".reg/999" section.  */
  return _bfd_elfcore_make_pseudosection (abfd, ".reg",
                                          size, note->descpos + offset);
}

static bfd_boolean
elf_x86_64_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
{
  switch (note->descsz)
    {
      default:
        return FALSE;

      case 124:         /* sizeof(struct elf_prpsinfo) on Linux/x32 */
        elf_tdata (abfd)->core->pid
          = bfd_get_32 (abfd, note->descdata + 12);
        elf_tdata (abfd)->core->program
          = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
        elf_tdata (abfd)->core->command
          = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
        break;

      case 136:         /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */
        elf_tdata (abfd)->core->pid
          = bfd_get_32 (abfd, note->descdata + 24);
        elf_tdata (abfd)->core->program
         = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
        elf_tdata (abfd)->core->command
         = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
    }

  /* Note that for some reason, a spurious space is tacked
     onto the end of the args in some (at least one anyway)
     implementations, so strip it off if it exists.  */

  {
    char *command = elf_tdata (abfd)->core->command;
    int n = strlen (command);

    if (0 < n && command[n - 1] == ' ')
      command[n - 1] = '\0';
  }

  return TRUE;
}

#ifdef CORE_HEADER
static char *
elf_x86_64_write_core_note (bfd *abfd, char *buf, int *bufsiz,
                            int note_type, ...)
{
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  va_list ap;
  const char *fname, *psargs;
  long pid;
  int cursig;
  const void *gregs;

  switch (note_type)
    {
    default:
      return NULL;

    case NT_PRPSINFO:
      va_start (ap, note_type);
      fname = va_arg (ap, const char *);
      psargs = va_arg (ap, const char *);
      va_end (ap);

      if (bed->s->elfclass == ELFCLASS32)
        {
          prpsinfo32_t data;
          memset (&data, 0, sizeof (data));
          strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
          strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
          return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
                                     &data, sizeof (data));
        }
      else
        {
          prpsinfo64_t data;
          memset (&data, 0, sizeof (data));
          strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
          strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
          return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
                                     &data, sizeof (data));
        }
      /* NOTREACHED */

    case NT_PRSTATUS:
      va_start (ap, note_type);
      pid = va_arg (ap, long);
      cursig = va_arg (ap, int);
      gregs = va_arg (ap, const void *);
      va_end (ap);

      if (bed->s->elfclass == ELFCLASS32)
        {
          if (bed->elf_machine_code == EM_X86_64)
            {
              prstatusx32_t prstat;
              memset (&prstat, 0, sizeof (prstat));
              prstat.pr_pid = pid;
              prstat.pr_cursig = cursig;
              memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
              return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
                                         &prstat, sizeof (prstat));
            }
          else
            {
              prstatus32_t prstat;
              memset (&prstat, 0, sizeof (prstat));
              prstat.pr_pid = pid;
              prstat.pr_cursig = cursig;
              memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
              return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
                                         &prstat, sizeof (prstat));
            }
        }
      else
        {
          prstatus64_t prstat;
          memset (&prstat, 0, sizeof (prstat));
          prstat.pr_pid = pid;
          prstat.pr_cursig = cursig;
          memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
          return elfcore_write_note (abfd, buf, bufsiz, "CORE", note_type,
                                     &prstat, sizeof (prstat));
        }
    }
  /* NOTREACHED */
}
#endif
\f
/* Functions for the x86-64 ELF linker.  */

/* The size in bytes of an entry in the global offset table.  */

#define GOT_ENTRY_SIZE 8

/* The size in bytes of an entry in the lazy procedure linkage table.  */

#define LAZY_PLT_ENTRY_SIZE 16

/* The size in bytes of an entry in the non-lazy procedure linkage
   table.  */

#define NON_LAZY_PLT_ENTRY_SIZE 8

/* The first entry in a lazy procedure linkage table looks like this.
   See the SVR4 ABI i386 supplement and the x86-64 ABI to see how this
   works.  */

static const bfd_byte elf_x86_64_lazy_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
{
  0xff, 0x35, 8, 0, 0, 0,       /* pushq GOT+8(%rip)  */
  0xff, 0x25, 16, 0, 0, 0,      /* jmpq *GOT+16(%rip) */
  0x0f, 0x1f, 0x40, 0x00        /* nopl 0(%rax)       */
};

/* Subsequent entries in a lazy procedure linkage table look like this.  */

static const bfd_byte elf_x86_64_lazy_plt_entry[LAZY_PLT_ENTRY_SIZE] =
{
  0xff, 0x25,   /* jmpq *name@GOTPC(%rip) */
  0, 0, 0, 0,   /* replaced with offset to this symbol in .got.  */
  0x68,         /* pushq immediate */
  0, 0, 0, 0,   /* replaced with index into relocation table.  */
  0xe9,         /* jmp relative */
  0, 0, 0, 0    /* replaced with offset to start of .plt0.  */
};

/* The first entry in a lazy procedure linkage table with BND prefix
   like this.  */

static const bfd_byte elf_x86_64_lazy_bnd_plt0_entry[LAZY_PLT_ENTRY_SIZE] =
{
  0xff, 0x35, 8, 0, 0, 0,         /* pushq GOT+8(%rip)        */
  0xf2, 0xff, 0x25, 16, 0, 0, 0,  /* bnd jmpq *GOT+16(%rip)   */
  0x0f, 0x1f, 0                   /* nopl (%rax)              */
};

/* Subsequent entries for branches with BND prefx in a lazy procedure
   linkage table look like this.  */

static const bfd_byte elf_x86_64_lazy_bnd_plt_entry[LAZY_PLT_ENTRY_SIZE] =
{
  0x68, 0, 0, 0, 0,             /* pushq immediate            */
  0xf2, 0xe9, 0, 0, 0, 0,       /* bnd jmpq relative          */
  0x0f, 0x1f, 0x44, 0, 0        /* nopl 0(%rax,%rax,1)        */
};

/* The first entry in the IBT-enabled lazy procedure linkage table is the
   the same as the lazy PLT with BND prefix so that bound registers are
   preserved when control is passed to dynamic linker.  Subsequent
   entries for a IBT-enabled lazy procedure linkage table look like
   this.  */

static const bfd_byte elf_x86_64_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
{
  0xf3, 0x0f, 0x1e, 0xfa,       /* endbr64                    */
  0x68, 0, 0, 0, 0,             /* pushq immediate            */
  0xf2, 0xe9, 0, 0, 0, 0,       /* bnd jmpq relative          */
  0x90                          /* nop                        */
};

/* The first entry in the x32 IBT-enabled lazy procedure linkage table
   is the same as the normal lazy PLT.  Subsequent entries for an
   x32 IBT-enabled lazy procedure linkage table look like this.  */

static const bfd_byte elf_x32_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
{
  0xf3, 0x0f, 0x1e, 0xfa,       /* endbr64                    */
  0x68, 0, 0, 0, 0,             /* pushq immediate            */
  0xe9, 0, 0, 0, 0,             /* jmpq relative              */
  0x66, 0x90                    /* xchg %ax,%ax               */
};

/* Entries in the non-lazey procedure linkage table look like this.  */

static const bfd_byte elf_x86_64_non_lazy_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
{
  0xff, 0x25,        /* jmpq *name@GOTPC(%rip)                        */
  0, 0, 0, 0,        /* replaced with offset to this symbol in .got.  */
  0x66, 0x90         /* xchg %ax,%ax                                  */
};

/* Entries for branches with BND prefix in the non-lazey procedure
   linkage table look like this.  */

static const bfd_byte elf_x86_64_non_lazy_bnd_plt_entry[NON_LAZY_PLT_ENTRY_SIZE] =
{
  0xf2, 0xff, 0x25,  /* bnd jmpq *name@GOTPC(%rip)                    */
  0, 0, 0, 0,        /* replaced with offset to this symbol in .got.  */
  0x90               /* nop                                           */
};

/* Entries for branches with IBT-enabled in the non-lazey procedure
   linkage table look like this.  They have the same size as the lazy
   PLT entry.  */

static const bfd_byte elf_x86_64_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
{
  0xf3, 0x0f, 0x1e, 0xfa,       /* endbr64                     */
  0xf2, 0xff, 0x25,             /* bnd jmpq *name@GOTPC(%rip)  */
  0, 0, 0, 0,  /* replaced with offset to this symbol in .got. */
  0x0f, 0x1f, 0x44, 0x00, 0x00  /* nopl 0x0(%rax,%rax,1)       */
};

/* Entries for branches with IBT-enabled in the x32 non-lazey procedure
   linkage table look like this.  They have the same size as the lazy
   PLT entry.  */

static const bfd_byte elf_x32_non_lazy_ibt_plt_entry[LAZY_PLT_ENTRY_SIZE] =
{
  0xf3, 0x0f, 0x1e, 0xfa,            /* endbr64                */
  0xff, 0x25,                        /* jmpq *name@GOTPC(%rip) */
  0, 0, 0, 0,  /* replaced with offset to this symbol in .got. */
  0x66, 0x0f, 0x1f, 0x44, 0x00, 0x00 /* nopw 0x0(%rax,%rax,1)  */
};

/* .eh_frame covering the lazy .plt section.  */

static const bfd_byte elf_x86_64_eh_frame_lazy_plt[] =
{
  PLT_CIE_LENGTH, 0, 0, 0,      /* CIE length */
  0, 0, 0, 0,                   /* CIE ID */
  1,                            /* CIE version */
  'z', 'R', 0,                  /* Augmentation string */
  1,                            /* Code alignment factor */
  0x78,                         /* Data alignment factor */
  16,                           /* Return address column */
  1,                            /* Augmentation size */
  DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
  DW_CFA_def_cfa, 7, 8,         /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
  DW_CFA_offset + 16, 1,        /* DW_CFA_offset: r16 (rip) at cfa-8 */
  DW_CFA_nop, DW_CFA_nop,

  PLT_FDE_LENGTH, 0, 0, 0,      /* FDE length */
  PLT_CIE_LENGTH + 8, 0, 0, 0,  /* CIE pointer */
  0, 0, 0, 0,                   /* R_X86_64_PC32 .plt goes here */
  0, 0, 0, 0,                   /* .plt size goes here */
  0,                            /* Augmentation size */
  DW_CFA_def_cfa_offset, 16,    /* DW_CFA_def_cfa_offset: 16 */
  DW_CFA_advance_loc + 6,       /* DW_CFA_advance_loc: 6 to __PLT__+6 */
  DW_CFA_def_cfa_offset, 24,    /* DW_CFA_def_cfa_offset: 24 */
  DW_CFA_advance_loc + 10,      /* DW_CFA_advance_loc: 10 to __PLT__+16 */
  DW_CFA_def_cfa_expression,    /* DW_CFA_def_cfa_expression */
  11,                           /* Block length */
  DW_OP_breg7, 8,               /* DW_OP_breg7 (rsp): 8 */
  DW_OP_breg16, 0,              /* DW_OP_breg16 (rip): 0 */
  DW_OP_lit15, DW_OP_and, DW_OP_lit11, DW_OP_ge,
  DW_OP_lit3, DW_OP_shl, DW_OP_plus,
  DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
};

/* .eh_frame covering the lazy BND .plt section.  */

static const bfd_byte elf_x86_64_eh_frame_lazy_bnd_plt[] =
{
  PLT_CIE_LENGTH, 0, 0, 0,      /* CIE length */
  0, 0, 0, 0,                   /* CIE ID */
  1,                            /* CIE version */
  'z', 'R', 0,                  /* Augmentation string */
  1,                            /* Code alignment factor */
  0x78,                         /* Data alignment factor */
  16,                           /* Return address column */
  1,                            /* Augmentation size */
  DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
  DW_CFA_def_cfa, 7, 8,         /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
  DW_CFA_offset + 16, 1,        /* DW_CFA_offset: r16 (rip) at cfa-8 */
  DW_CFA_nop, DW_CFA_nop,

  PLT_FDE_LENGTH, 0, 0, 0,      /* FDE length */
  PLT_CIE_LENGTH + 8, 0, 0, 0,  /* CIE pointer */
  0, 0, 0, 0,                   /* R_X86_64_PC32 .plt goes here */
  0, 0, 0, 0,                   /* .plt size goes here */
  0,                            /* Augmentation size */
  DW_CFA_def_cfa_offset, 16,    /* DW_CFA_def_cfa_offset: 16 */
  DW_CFA_advance_loc + 6,       /* DW_CFA_advance_loc: 6 to __PLT__+6 */
  DW_CFA_def_cfa_offset, 24,    /* DW_CFA_def_cfa_offset: 24 */
  DW_CFA_advance_loc + 10,      /* DW_CFA_advance_loc: 10 to __PLT__+16 */
  DW_CFA_def_cfa_expression,    /* DW_CFA_def_cfa_expression */
  11,                           /* Block length */
  DW_OP_breg7, 8,               /* DW_OP_breg7 (rsp): 8 */
  DW_OP_breg16, 0,              /* DW_OP_breg16 (rip): 0 */
  DW_OP_lit15, DW_OP_and, DW_OP_lit5, DW_OP_ge,
  DW_OP_lit3, DW_OP_shl, DW_OP_plus,
  DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
};

/* .eh_frame covering the lazy .plt section with IBT-enabled.  */

static const bfd_byte elf_x86_64_eh_frame_lazy_ibt_plt[] =
{
  PLT_CIE_LENGTH, 0, 0, 0,      /* CIE length */
  0, 0, 0, 0,                   /* CIE ID */
  1,                            /* CIE version */
  'z', 'R', 0,                  /* Augmentation string */
  1,                            /* Code alignment factor */
  0x78,                         /* Data alignment factor */
  16,                           /* Return address column */
  1,                            /* Augmentation size */
  DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
  DW_CFA_def_cfa, 7, 8,         /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
  DW_CFA_offset + 16, 1,        /* DW_CFA_offset: r16 (rip) at cfa-8 */
  DW_CFA_nop, DW_CFA_nop,

  PLT_FDE_LENGTH, 0, 0, 0,      /* FDE length */
  PLT_CIE_LENGTH + 8, 0, 0, 0,  /* CIE pointer */
  0, 0, 0, 0,                   /* R_X86_64_PC32 .plt goes here */
  0, 0, 0, 0,                   /* .plt size goes here */
  0,                            /* Augmentation size */
  DW_CFA_def_cfa_offset, 16,    /* DW_CFA_def_cfa_offset: 16 */
  DW_CFA_advance_loc + 6,       /* DW_CFA_advance_loc: 6 to __PLT__+6 */
  DW_CFA_def_cfa_offset, 24,    /* DW_CFA_def_cfa_offset: 24 */
  DW_CFA_advance_loc + 10,      /* DW_CFA_advance_loc: 10 to __PLT__+16 */
  DW_CFA_def_cfa_expression,    /* DW_CFA_def_cfa_expression */
  11,                           /* Block length */
  DW_OP_breg7, 8,               /* DW_OP_breg7 (rsp): 8 */
  DW_OP_breg16, 0,              /* DW_OP_breg16 (rip): 0 */
  DW_OP_lit15, DW_OP_and, DW_OP_lit10, DW_OP_ge,
  DW_OP_lit3, DW_OP_shl, DW_OP_plus,
  DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
};

/* .eh_frame covering the x32 lazy .plt section with IBT-enabled.  */

static const bfd_byte elf_x32_eh_frame_lazy_ibt_plt[] =
{
  PLT_CIE_LENGTH, 0, 0, 0,      /* CIE length */
  0, 0, 0, 0,                   /* CIE ID */
  1,                            /* CIE version */
  'z', 'R', 0,                  /* Augmentation string */
  1,                            /* Code alignment factor */
  0x78,                         /* Data alignment factor */
  16,                           /* Return address column */
  1,                            /* Augmentation size */
  DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
  DW_CFA_def_cfa, 7, 8,         /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
  DW_CFA_offset + 16, 1,        /* DW_CFA_offset: r16 (rip) at cfa-8 */
  DW_CFA_nop, DW_CFA_nop,

  PLT_FDE_LENGTH, 0, 0, 0,      /* FDE length */
  PLT_CIE_LENGTH + 8, 0, 0, 0,  /* CIE pointer */
  0, 0, 0, 0,                   /* R_X86_64_PC32 .plt goes here */
  0, 0, 0, 0,                   /* .plt size goes here */
  0,                            /* Augmentation size */
  DW_CFA_def_cfa_offset, 16,    /* DW_CFA_def_cfa_offset: 16 */
  DW_CFA_advance_loc + 6,       /* DW_CFA_advance_loc: 6 to __PLT__+6 */
  DW_CFA_def_cfa_offset, 24,    /* DW_CFA_def_cfa_offset: 24 */
  DW_CFA_advance_loc + 10,      /* DW_CFA_advance_loc: 10 to __PLT__+16 */
  DW_CFA_def_cfa_expression,    /* DW_CFA_def_cfa_expression */
  11,                           /* Block length */
  DW_OP_breg7, 8,               /* DW_OP_breg7 (rsp): 8 */
  DW_OP_breg16, 0,              /* DW_OP_breg16 (rip): 0 */
  DW_OP_lit15, DW_OP_and, DW_OP_lit9, DW_OP_ge,
  DW_OP_lit3, DW_OP_shl, DW_OP_plus,
  DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
};

/* .eh_frame covering the non-lazy .plt section.  */

static const bfd_byte elf_x86_64_eh_frame_non_lazy_plt[] =
{
#define PLT_GOT_FDE_LENGTH              20
  PLT_CIE_LENGTH, 0, 0, 0,      /* CIE length */
  0, 0, 0, 0,                   /* CIE ID */
  1,                            /* CIE version */
  'z', 'R', 0,                  /* Augmentation string */
  1,                            /* Code alignment factor */
  0x78,                         /* Data alignment factor */
  16,                           /* Return address column */
  1,                            /* Augmentation size */
  DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
  DW_CFA_def_cfa, 7, 8,         /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
  DW_CFA_offset + 16, 1,        /* DW_CFA_offset: r16 (rip) at cfa-8 */
  DW_CFA_nop, DW_CFA_nop,

  PLT_GOT_FDE_LENGTH, 0, 0, 0,  /* FDE length */
  PLT_CIE_LENGTH + 8, 0, 0, 0,  /* CIE pointer */
  0, 0, 0, 0,                   /* the start of non-lazy .plt goes here */
  0, 0, 0, 0,                   /* non-lazy .plt size goes here */
  0,                            /* Augmentation size */
  DW_CFA_nop, DW_CFA_nop, DW_CFA_nop, DW_CFA_nop,
  DW_CFA_nop, DW_CFA_nop, DW_CFA_nop
};

/* These are the standard parameters.  */
static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_plt =
  {
    elf_x86_64_lazy_plt0_entry,         /* plt0_entry */
    LAZY_PLT_ENTRY_SIZE,                /* plt0_entry_size */
    elf_x86_64_lazy_plt_entry,          /* plt_entry */
    LAZY_PLT_ENTRY_SIZE,                /* plt_entry_size */
    2,                                  /* plt0_got1_offset */
    8,                                  /* plt0_got2_offset */
    12,                                 /* plt0_got2_insn_end */
    2,                                  /* plt_got_offset */
    7,                                  /* plt_reloc_offset */
    12,                                 /* plt_plt_offset */
    6,                                  /* plt_got_insn_size */
    LAZY_PLT_ENTRY_SIZE,                /* plt_plt_insn_end */
    6,                                  /* plt_lazy_offset */
    elf_x86_64_lazy_plt0_entry,         /* pic_plt0_entry */
    elf_x86_64_lazy_plt_entry,          /* pic_plt_entry */
    elf_x86_64_eh_frame_lazy_plt,       /* eh_frame_plt */
    sizeof (elf_x86_64_eh_frame_lazy_plt) /* eh_frame_plt_size */
  };

static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_plt =
  {
    elf_x86_64_non_lazy_plt_entry,      /* plt_entry */
    elf_x86_64_non_lazy_plt_entry,      /* pic_plt_entry */
    NON_LAZY_PLT_ENTRY_SIZE,            /* plt_entry_size */
    2,                                  /* plt_got_offset */
    6,                                  /* plt_got_insn_size */
    elf_x86_64_eh_frame_non_lazy_plt,   /* eh_frame_plt */
    sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
  };

static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_bnd_plt =
  {
    elf_x86_64_lazy_bnd_plt0_entry,     /* plt0_entry */
    LAZY_PLT_ENTRY_SIZE,                /* plt0_entry_size */
    elf_x86_64_lazy_bnd_plt_entry,      /* plt_entry */
    LAZY_PLT_ENTRY_SIZE,                /* plt_entry_size */
    2,                                  /* plt0_got1_offset */
    1+8,                                /* plt0_got2_offset */
    1+12,                               /* plt0_got2_insn_end */
    1+2,                                /* plt_got_offset */
    1,                                  /* plt_reloc_offset */
    7,                                  /* plt_plt_offset */
    1+6,                                /* plt_got_insn_size */
    11,                                 /* plt_plt_insn_end */
    0,                                  /* plt_lazy_offset */
    elf_x86_64_lazy_bnd_plt0_entry,     /* pic_plt0_entry */
    elf_x86_64_lazy_bnd_plt_entry,      /* pic_plt_entry */
    elf_x86_64_eh_frame_lazy_bnd_plt,   /* eh_frame_plt */
    sizeof (elf_x86_64_eh_frame_lazy_bnd_plt) /* eh_frame_plt_size */
  };

static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_bnd_plt =
  {
    elf_x86_64_non_lazy_bnd_plt_entry,  /* plt_entry */
    elf_x86_64_non_lazy_bnd_plt_entry,  /* pic_plt_entry */
    NON_LAZY_PLT_ENTRY_SIZE,            /* plt_entry_size */
    1+2,                                /* plt_got_offset */
    1+6,                                /* plt_got_insn_size */
    elf_x86_64_eh_frame_non_lazy_plt,   /* eh_frame_plt */
    sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
  };

static const struct elf_x86_lazy_plt_layout elf_x86_64_lazy_ibt_plt =
  {
    elf_x86_64_lazy_bnd_plt0_entry,     /* plt0_entry */
    LAZY_PLT_ENTRY_SIZE,                /* plt0_entry_size */
    elf_x86_64_lazy_ibt_plt_entry,      /* plt_entry */
    LAZY_PLT_ENTRY_SIZE,                /* plt_entry_size */
    2,                                  /* plt0_got1_offset */
    1+8,                                /* plt0_got2_offset */
    1+12,                               /* plt0_got2_insn_end */
    4+1+2,                              /* plt_got_offset */
    4+1,                                /* plt_reloc_offset */
    4+1+6,                              /* plt_plt_offset */
    4+1+6,                              /* plt_got_insn_size */
    4+1+5+5,                            /* plt_plt_insn_end */
    0,                                  /* plt_lazy_offset */
    elf_x86_64_lazy_bnd_plt0_entry,     /* pic_plt0_entry */
    elf_x86_64_lazy_ibt_plt_entry,      /* pic_plt_entry */
    elf_x86_64_eh_frame_lazy_ibt_plt,   /* eh_frame_plt */
    sizeof (elf_x86_64_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */
  };

static const struct elf_x86_lazy_plt_layout elf_x32_lazy_ibt_plt =
  {
    elf_x86_64_lazy_plt0_entry,         /* plt0_entry */
    LAZY_PLT_ENTRY_SIZE,                /* plt0_entry_size */
    elf_x32_lazy_ibt_plt_entry,         /* plt_entry */
    LAZY_PLT_ENTRY_SIZE,                /* plt_entry_size */
    2,                                  /* plt0_got1_offset */
    8,                                  /* plt0_got2_offset */
    12,                                 /* plt0_got2_insn_end */
    4+2,                                /* plt_got_offset */
    4+1,                                /* plt_reloc_offset */
    4+6,                                /* plt_plt_offset */
    4+6,                                /* plt_got_insn_size */
    4+5+5,                              /* plt_plt_insn_end */
    0,                                  /* plt_lazy_offset */
    elf_x86_64_lazy_plt0_entry,         /* pic_plt0_entry */
    elf_x32_lazy_ibt_plt_entry,         /* pic_plt_entry */
    elf_x32_eh_frame_lazy_ibt_plt,      /* eh_frame_plt */
    sizeof (elf_x32_eh_frame_lazy_ibt_plt) /* eh_frame_plt_size */
  };

static const struct elf_x86_non_lazy_plt_layout elf_x86_64_non_lazy_ibt_plt =
  {
    elf_x86_64_non_lazy_ibt_plt_entry,  /* plt_entry */
    elf_x86_64_non_lazy_ibt_plt_entry,  /* pic_plt_entry */
    LAZY_PLT_ENTRY_SIZE,                /* plt_entry_size */
    4+1+2,                              /* plt_got_offset */
    4+1+6,                              /* plt_got_insn_size */
    elf_x86_64_eh_frame_non_lazy_plt,   /* eh_frame_plt */
    sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
  };

static const struct elf_x86_non_lazy_plt_layout elf_x32_non_lazy_ibt_plt =
  {
    elf_x32_non_lazy_ibt_plt_entry,     /* plt_entry */
    elf_x32_non_lazy_ibt_plt_entry,     /* pic_plt_entry */
    LAZY_PLT_ENTRY_SIZE,                /* plt_entry_size */
    4+2,                                /* plt_got_offset */
    4+6,                                /* plt_got_insn_size */
    elf_x86_64_eh_frame_non_lazy_plt,   /* eh_frame_plt */
    sizeof (elf_x86_64_eh_frame_non_lazy_plt) /* eh_frame_plt_size */
  };

static const struct elf_x86_backend_data elf_x86_64_arch_bed =
  {
    is_normal                            /* os */
  };

#define elf_backend_arch_data   &elf_x86_64_arch_bed

static bfd_boolean
elf64_x86_64_elf_object_p (bfd *abfd)
{
  /* Set the right machine number for an x86-64 elf64 file.  */
  bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
  return TRUE;
}

static bfd_boolean
elf32_x86_64_elf_object_p (bfd *abfd)
{
  /* Set the right machine number for an x86-64 elf32 file.  */
  bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32);
  return TRUE;
}

/* Return TRUE if the TLS access code sequence support transition
   from R_TYPE.  */

static bfd_boolean
elf_x86_64_check_tls_transition (bfd *abfd,
                                 struct bfd_link_info *info,
                                 asection *sec,
                                 bfd_byte *contents,
                                 Elf_Internal_Shdr *symtab_hdr,
                                 struct elf_link_hash_entry **sym_hashes,
                                 unsigned int r_type,
                                 const Elf_Internal_Rela *rel,
                                 const Elf_Internal_Rela *relend)
{
  unsigned int val;
  unsigned long r_symndx;
  bfd_boolean largepic = FALSE;
  struct elf_link_hash_entry *h;
  bfd_vma offset;
  struct elf_x86_link_hash_table *htab;
  bfd_byte *call;
  bfd_boolean indirect_call;

  htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
  offset = rel->r_offset;
  switch (r_type)
    {
    case R_X86_64_TLSGD:
    case R_X86_64_TLSLD:
      if ((rel + 1) >= relend)
        return FALSE;

      if (r_type == R_X86_64_TLSGD)
        {
          /* Check transition from GD access model.  For 64bit, only
                .byte 0x66; leaq foo@tlsgd(%rip), %rdi
                .word 0x6666; rex64; call __tls_get_addr@PLT
             or
                .byte 0x66; leaq foo@tlsgd(%rip), %rdi
                .byte 0x66; rex64
                call *__tls_get_addr@GOTPCREL(%rip)
                which may be converted to
                addr32 call __tls_get_addr
             can transit to different access model.  For 32bit, only
                leaq foo@tlsgd(%rip), %rdi
                .word 0x6666; rex64; call __tls_get_addr@PLT
             or
                leaq foo@tlsgd(%rip), %rdi
                .byte 0x66; rex64
                call *__tls_get_addr@GOTPCREL(%rip)
                which may be converted to
                addr32 call __tls_get_addr
             can transit to different access model.  For largepic,
             we also support:
                leaq foo@tlsgd(%rip), %rdi
                movabsq $__tls_get_addr@pltoff, %rax
                addq $r15, %rax
                call *%rax
             or
                leaq foo@tlsgd(%rip), %rdi
                movabsq $__tls_get_addr@pltoff, %rax
                addq $rbx, %rax
                call *%rax  */

          static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d };

          if ((offset + 12) > sec->size)
            return FALSE;

          call = contents + offset + 4;
          if (call[0] != 0x66
              || !((call[1] == 0x48
                    && call[2] == 0xff
                    && call[3] == 0x15)
                   || (call[1] == 0x48
                       && call[2] == 0x67
                       && call[3] == 0xe8)
                   || (call[1] == 0x66
                       && call[2] == 0x48
                       && call[3] == 0xe8)))
            {
              if (!ABI_64_P (abfd)
                  || (offset + 19) > sec->size
                  || offset < 3
                  || memcmp (call - 7, leaq + 1, 3) != 0
                  || memcmp (call, "\x48\xb8", 2) != 0
                  || call[11] != 0x01
                  || call[13] != 0xff
                  || call[14] != 0xd0
                  || !((call[10] == 0x48 && call[12] == 0xd8)
                       || (call[10] == 0x4c && call[12] == 0xf8)))
                return FALSE;
              largepic = TRUE;
            }
          else if (ABI_64_P (abfd))
            {
              if (offset < 4
                  || memcmp (contents + offset - 4, leaq, 4) != 0)
                return FALSE;
            }
          else
            {
              if (offset < 3
                  || memcmp (contents + offset - 3, leaq + 1, 3) != 0)
                return FALSE;
            }
          indirect_call = call[2] == 0xff;
        }
      else
        {
          /* Check transition from LD access model.  Only
                leaq foo@tlsld(%rip), %rdi;
                call __tls_get_addr@PLT
             or
                leaq foo@tlsld(%rip), %rdi;
                call *__tls_get_addr@GOTPCREL(%rip)
                which may be converted to
                addr32 call __tls_get_addr
             can transit to different access model.  For largepic
             we also support:
                leaq foo@tlsld(%rip), %rdi
                movabsq $__tls_get_addr@pltoff, %rax
                addq $r15, %rax
                call *%rax
             or
                leaq foo@tlsld(%rip), %rdi
                movabsq $__tls_get_addr@pltoff, %rax
                addq $rbx, %rax
                call *%rax  */

          static const unsigned char lea[] = { 0x48, 0x8d, 0x3d };

          if (offset < 3 || (offset + 9) > sec->size)
            return FALSE;

          if (memcmp (contents + offset - 3, lea, 3) != 0)
            return FALSE;

          call = contents + offset + 4;
          if (!(call[0] == 0xe8
                || (call[0] == 0xff && call[1] == 0x15)
                || (call[0] == 0x67 && call[1] == 0xe8)))
            {
              if (!ABI_64_P (abfd)
                  || (offset + 19) > sec->size
                  || memcmp (call, "\x48\xb8", 2) != 0
                  || call[11] != 0x01
                  || call[13] != 0xff
                  || call[14] != 0xd0
                  || !((call[10] == 0x48 && call[12] == 0xd8)
                       || (call[10] == 0x4c && call[12] == 0xf8)))
                return FALSE;
              largepic = TRUE;
            }
          indirect_call = call[0] == 0xff;
        }

      r_symndx = htab->r_sym (rel[1].r_info);
      if (r_symndx < symtab_hdr->sh_info)
        return FALSE;

      h = sym_hashes[r_symndx - symtab_hdr->sh_info];
      if (h == NULL
          || !((struct elf_x86_link_hash_entry *) h)->tls_get_addr)
        return FALSE;
      else
        {
          r_type = (ELF32_R_TYPE (rel[1].r_info)
                    & ~R_X86_64_converted_reloc_bit);
          if (largepic)
            return r_type == R_X86_64_PLTOFF64;
          else if (indirect_call)
            return r_type == R_X86_64_GOTPCRELX;
          else
            return (r_type == R_X86_64_PC32 || r_type == R_X86_64_PLT32);
        }

    case R_X86_64_GOTTPOFF:
      /* Check transition from IE access model:
                mov foo@gottpoff(%rip), %reg
                add foo@gottpoff(%rip), %reg
       */

      /* Check REX prefix first.  */
      if (offset >= 3 && (offset + 4) <= sec->size)
        {
          val = bfd_get_8 (abfd, contents + offset - 3);
          if (val != 0x48 && val != 0x4c)
            {
              /* X32 may have 0x44 REX prefix or no REX prefix.  */
              if (ABI_64_P (abfd))
                return FALSE;
            }
        }
      else
        {
          /* X32 may not have any REX prefix.  */
          if (ABI_64_P (abfd))
            return FALSE;
          if (offset < 2 || (offset + 3) > sec->size)
            return FALSE;
        }

      val = bfd_get_8 (abfd, contents + offset - 2);
      if (val != 0x8b && val != 0x03)
        return FALSE;

      val = bfd_get_8 (abfd, contents + offset - 1);
      return (val & 0xc7) == 5;

    case R_X86_64_GOTPC32_TLSDESC:
      /* Check transition from GDesc access model:
                leaq x@tlsdesc(%rip), %rax

         Make sure it's a leaq adding rip to a 32-bit offset
         into any register, although it's probably almost always
         going to be rax.  */

      if (offset < 3 || (offset + 4) > sec->size)
        return FALSE;

      val = bfd_get_8 (abfd, contents + offset - 3);
      if ((val & 0xfb) != 0x48)
        return FALSE;

      if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
        return FALSE;

      val = bfd_get_8 (abfd, contents + offset - 1);
      return (val & 0xc7) == 0x05;

    case R_X86_64_TLSDESC_CALL:
      /* Check transition from GDesc access model:
                call *x@tlsdesc(%rax)
       */
      if (offset + 2 <= sec->size)
        {
          /* Make sure that it's a call *x@tlsdesc(%rax).  */
          call = contents + offset;
          return call[0] == 0xff && call[1] == 0x10;
        }

      return FALSE;

    default:
      abort ();
    }
}

/* Return TRUE if the TLS access transition is OK or no transition
   will be performed.  Update R_TYPE if there is a transition.  */

static bfd_boolean
elf_x86_64_tls_transition (struct bfd_link_info *info, bfd *abfd,
                           asection *sec, bfd_byte *contents,
                           Elf_Internal_Shdr *symtab_hdr,
                           struct elf_link_hash_entry **sym_hashes,
                           unsigned int *r_type, int tls_type,
                           const Elf_Internal_Rela *rel,
                           const Elf_Internal_Rela *relend,
                           struct elf_link_hash_entry *h,
                           unsigned long r_symndx,
                           bfd_boolean from_relocate_section)
{
  unsigned int from_type = *r_type;
  unsigned int to_type = from_type;
  bfd_boolean check = TRUE;

  /* Skip TLS transition for functions.  */
  if (h != NULL
      && (h->type == STT_FUNC
          || h->type == STT_GNU_IFUNC))
    return TRUE;

  switch (from_type)
    {
    case R_X86_64_TLSGD:
    case R_X86_64_GOTPC32_TLSDESC:
    case R_X86_64_TLSDESC_CALL:
    case R_X86_64_GOTTPOFF:
      if (bfd_link_executable (info))
        {
          if (h == NULL)
            to_type = R_X86_64_TPOFF32;
          else
            to_type = R_X86_64_GOTTPOFF;
        }

      /* When we are called from elf_x86_64_relocate_section, there may
         be additional transitions based on TLS_TYPE.  */
      if (from_relocate_section)
        {
          unsigned int new_to_type = to_type;

          if (TLS_TRANSITION_IE_TO_LE_P (info, h, tls_type))
            new_to_type = R_X86_64_TPOFF32;

          if (to_type == R_X86_64_TLSGD
              || to_type == R_X86_64_GOTPC32_TLSDESC
              || to_type == R_X86_64_TLSDESC_CALL)
            {
              if (tls_type == GOT_TLS_IE)
                new_to_type = R_X86_64_GOTTPOFF;
            }

          /* We checked the transition before when we were called from
             elf_x86_64_check_relocs.  We only want to check the new
             transition which hasn't been checked before.  */
          check = new_to_type != to_type && from_type == to_type;
          to_type = new_to_type;
        }

      break;

    case R_X86_64_TLSLD:
      if (bfd_link_executable (info))
        to_type = R_X86_64_TPOFF32;
      break;

    default:
      return TRUE;
    }

  /* Return TRUE if there is no transition.  */
  if (from_type == to_type)
    return TRUE;

  /* Check if the transition can be performed.  */
  if (check
      && ! elf_x86_64_check_tls_transition (abfd, info, sec, contents,
                                            symtab_hdr, sym_hashes,
                                            from_type, rel, relend))
    {
      reloc_howto_type *from, *to;
      const char *name;

      from = elf_x86_64_rtype_to_howto (abfd, from_type);
      to = elf_x86_64_rtype_to_howto (abfd, to_type);

      if (h)
        name = h->root.root.string;
      else
        {
          struct elf_x86_link_hash_table *htab;

          htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
          if (htab == NULL)
            name = "*unknown*";
          else
            {
              Elf_Internal_Sym *isym;

              isym = bfd_sym_from_r_symndx (&htab->sym_cache,
                                            abfd, r_symndx);
              name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
            }
        }

      _bfd_error_handler
        /* xgettext:c-format */
        (_("%pB: TLS transition from %s to %s against `%s' at %#Lx "
           "in section `%pA' failed"),
         abfd, from->name, to->name, name, rel->r_offset, sec);
      bfd_set_error (bfd_error_bad_value);
      return FALSE;
    }

  *r_type = to_type;
  return TRUE;
}

/* Rename some of the generic section flags to better document how they
   are used here.  */
#define check_relocs_failed     sec_flg0

static bfd_boolean
elf_x86_64_need_pic (struct bfd_link_info *info,
                     bfd *input_bfd, asection *sec,
                     struct elf_link_hash_entry *h,
                     Elf_Internal_Shdr *symtab_hdr,
                     Elf_Internal_Sym *isym,
                     reloc_howto_type *howto)
{
  const char *v = "";
  const char *und = "";
  const char *pic = "";
  const char *object;

  const char *name;
  if (h)
    {
      name = h->root.root.string;
      switch (ELF_ST_VISIBILITY (h->other))
        {
        case STV_HIDDEN:
          v = _("hidden symbol ");
          break;
        case STV_INTERNAL:
          v = _("internal symbol ");
          break;
        case STV_PROTECTED:
          v = _("protected symbol ");
          break;
        default:
          if (((struct elf_x86_link_hash_entry *) h)->def_protected)
            v = _("protected symbol ");
          else
            v = _("symbol ");
          pic = _("; recompile with -fPIC");
          break;
        }

      if (!h->def_regular && !h->def_dynamic)
        und = _("undefined ");
    }
  else
    {
      name = bfd_elf_sym_name (input_bfd, symtab_hdr, isym, NULL);
      pic = _("; recompile with -fPIC");
    }

  if (bfd_link_dll (info))
    object = _("a shared object");
  else if (bfd_link_pie (info))
    object = _("a PIE object");
  else
    object = _("a PDE object");

  /* xgettext:c-format */
  _bfd_error_handler (_("%pB: relocation %s against %s%s`%s' can "
                        "not be used when making %s%s"),
                      input_bfd, howto->name, und, v, name,
                      object, pic);
  bfd_set_error (bfd_error_bad_value);
  sec->check_relocs_failed = 1;
  return FALSE;
}

/* With the local symbol, foo, we convert
   mov foo@GOTPCREL(%rip), %reg
   to
   lea foo(%rip), %reg
   and convert
   call/jmp *foo@GOTPCREL(%rip)
   to
   nop call foo/jmp foo nop
   When PIC is false, convert
   test %reg, foo@GOTPCREL(%rip)
   to
   test $foo, %reg
   and convert
   binop foo@GOTPCREL(%rip), %reg
   to
   binop $foo, %reg
   where binop is one of adc, add, and, cmp, or, sbb, sub, xor
   instructions.  */

static bfd_boolean
elf_x86_64_convert_load_reloc (bfd *abfd,
                               bfd_byte *contents,
                               unsigned int *r_type_p,
                               Elf_Internal_Rela *irel,
                               struct elf_link_hash_entry *h,
                               bfd_boolean *converted,
                               struct bfd_link_info *link_info)
{
  struct elf_x86_link_hash_table *htab;
  bfd_boolean is_pic;
  bfd_boolean no_overflow;
  bfd_boolean relocx;
  bfd_boolean to_reloc_pc32;
  asection *tsec;
  bfd_signed_vma raddend;
  unsigned int opcode;
  unsigned int modrm;
  unsigned int r_type = *r_type_p;
  unsigned int r_symndx;
  bfd_vma roff = irel->r_offset;

  if (roff < (r_type == R_X86_64_REX_GOTPCRELX ? 3 : 2))
    return TRUE;

  raddend = irel->r_addend;
  /* Addend for 32-bit PC-relative relocation must be -4.  */
  if (raddend != -4)
    return TRUE;

  htab = elf_x86_hash_table (link_info, X86_64_ELF_DATA);
  is_pic = bfd_link_pic (link_info);

  relocx = (r_type == R_X86_64_GOTPCRELX
            || r_type == R_X86_64_REX_GOTPCRELX);

  /* TRUE if --no-relax is used.  */
  no_overflow = link_info->disable_target_specific_optimizations > 1;

  r_symndx = htab->r_sym (irel->r_info);

  opcode = bfd_get_8 (abfd, contents + roff - 2);

  /* Convert mov to lea since it has been done for a while.  */
  if (opcode != 0x8b)
    {
      /* Only convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX
         for call, jmp or one of adc, add, and, cmp, or, sbb, sub,
         test, xor instructions.  */
      if (!relocx)
        return TRUE;
    }

  /* We convert only to R_X86_64_PC32:
     1. Branch.
     2. R_X86_64_GOTPCREL since we can't modify REX byte.
     3. no_overflow is true.
     4. PIC.
     */
  to_reloc_pc32 = (opcode == 0xff
                   || !relocx
                   || no_overflow
                   || is_pic);

  /* Get the symbol referred to by the reloc.  */
  if (h == NULL)
    {
      Elf_Internal_Sym *isym
        = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx);

      /* Skip relocation against undefined symbols.  */
      if (isym->st_shndx == SHN_UNDEF)
        return TRUE;

      if (isym->st_shndx == SHN_ABS)
        tsec = bfd_abs_section_ptr;
      else if (isym->st_shndx == SHN_COMMON)
        tsec = bfd_com_section_ptr;
      else if (isym->st_shndx == SHN_X86_64_LCOMMON)
        tsec = &_bfd_elf_large_com_section;
      else
        tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
    }
  else
    {
      /* Undefined weak symbol is only bound locally in executable
         and its reference is resolved as 0 without relocation
         overflow.  We can only perform this optimization for
         GOTPCRELX relocations since we need to modify REX byte.
         It is OK convert mov with R_X86_64_GOTPCREL to
         R_X86_64_PC32.  */
      bfd_boolean local_ref;
      struct elf_x86_link_hash_entry *eh = elf_x86_hash_entry (h);

      /* NB: Also set linker_def via SYMBOL_REFERENCES_LOCAL_P.  */
      local_ref = SYMBOL_REFERENCES_LOCAL_P (link_info, h);
      if ((relocx || opcode == 0x8b)
          && (h->root.type == bfd_link_hash_undefweak
              && !eh->linker_def
              && local_ref))
        {
          if (opcode == 0xff)
            {
              /* Skip for branch instructions since R_X86_64_PC32
                 may overflow.  */
              if (no_overflow)
                return TRUE;
            }
          else if (relocx)
            {
              /* For non-branch instructions, we can convert to
                 R_X86_64_32/R_X86_64_32S since we know if there
                 is a REX byte.  */
              to_reloc_pc32 = FALSE;
            }

          /* Since we don't know the current PC when PIC is true,
             we can't convert to R_X86_64_PC32.  */
          if (to_reloc_pc32 && is_pic)
            return TRUE;

          goto convert;
        }
      /* Avoid optimizing GOTPCREL relocations againt _DYNAMIC since
         ld.so may use its link-time address.  */
      else if (h->start_stop
               || eh->linker_def
               || ((h->def_regular
                    || h->root.type == bfd_link_hash_defined
                    || h->root.type == bfd_link_hash_defweak)
                   && h != htab->elf.hdynamic
                   && local_ref))
        {
          /* bfd_link_hash_new or bfd_link_hash_undefined is
             set by an assignment in a linker script in
             bfd_elf_record_link_assignment.  start_stop is set
             on __start_SECNAME/__stop_SECNAME which mark section
             SECNAME.  */
          if (h->start_stop
              || eh->linker_def
              || (h->def_regular
                  && (h->root.type == bfd_link_hash_new
                      || h->root.type == bfd_link_hash_undefined
                      || ((h->root.type == bfd_link_hash_defined
                           || h->root.type == bfd_link_hash_defweak)
                          && h->root.u.def.section == bfd_und_section_ptr))))
            {
              /* Skip since R_X86_64_32/R_X86_64_32S may overflow.  */
              if (no_overflow)
                return TRUE;
              goto convert;
            }
          tsec = h->root.u.def.section;
        }
      else
        return TRUE;
    }

  /* Don't convert GOTPCREL relocation against large section.  */
  if (elf_section_data (tsec) !=  NULL
      && (elf_section_flags (tsec) & SHF_X86_64_LARGE) != 0)
    return TRUE;

  /* Skip since R_X86_64_PC32/R_X86_64_32/R_X86_64_32S may overflow.  */
  if (no_overflow)
    return TRUE;

convert:
  if (opcode == 0xff)
    {
      /* We have "call/jmp *foo@GOTPCREL(%rip)".  */
      unsigned int nop;
      unsigned int disp;
      bfd_vma nop_offset;

      /* Convert R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX to
         R_X86_64_PC32.  */
      modrm = bfd_get_8 (abfd, contents + roff - 1);
      if (modrm == 0x25)
        {
          /* Convert to "jmp foo nop".  */
          modrm = 0xe9;
          nop = NOP_OPCODE;
          nop_offset = irel->r_offset + 3;
          disp = bfd_get_32 (abfd, contents + irel->r_offset);
          irel->r_offset -= 1;
          bfd_put_32 (abfd, disp, contents + irel->r_offset);
        }
      else
        {
          struct elf_x86_link_hash_entry *eh
            = (struct elf_x86_link_hash_entry *) h;

          /* Convert to "nop call foo".  ADDR_PREFIX_OPCODE
             is a nop prefix.  */
          modrm = 0xe8;
          /* To support TLS optimization, always use addr32 prefix for
             "call *__tls_get_addr@GOTPCREL(%rip)".  */
          if (eh && eh->tls_get_addr)
            {
              nop = 0x67;
              nop_offset = irel->r_offset - 2;
            }
          else
            {
              nop = link_info->call_nop_byte;
              if (link_info->call_nop_as_suffix)
                {
                  nop_offset = irel->r_offset + 3;
                  disp = bfd_get_32 (abfd, contents + irel->r_offset);
                  irel->r_offset -= 1;
                  bfd_put_32 (abfd, disp, contents + irel->r_offset);
                }
              else
                nop_offset = irel->r_offset - 2;
            }
        }
      bfd_put_8 (abfd, nop, contents + nop_offset);
      bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
      r_type = R_X86_64_PC32;
    }
  else
    {
      unsigned int rex;
      unsigned int rex_mask = REX_R;

      if (r_type == R_X86_64_REX_GOTPCRELX)
        rex = bfd_get_8 (abfd, contents + roff - 3);
      else
        rex = 0;

      if (opcode == 0x8b)
        {
          if (to_reloc_pc32)
            {
              /* Convert "mov foo@GOTPCREL(%rip), %reg" to
                 "lea foo(%rip), %reg".  */
              opcode = 0x8d;
              r_type = R_X86_64_PC32;
            }
          else
            {
              /* Convert "mov foo@GOTPCREL(%rip), %reg" to
                 "mov $foo, %reg".  */
              opcode = 0xc7;
              modrm = bfd_get_8 (abfd, contents + roff - 1);
              modrm = 0xc0 | (modrm & 0x38) >> 3;
              if ((rex & REX_W) != 0
                  && ABI_64_P (link_info->output_bfd))
                {
                  /* Keep the REX_W bit in REX byte for LP64.  */
                  r_type = R_X86_64_32S;
                  goto rewrite_modrm_rex;
                }
              else
                {
                  /* If the REX_W bit in REX byte isn't needed,
                     use R_X86_64_32 and clear the W bit to avoid
                     sign-extend imm32 to imm64.  */
                  r_type = R_X86_64_32;
                  /* Clear the W bit in REX byte.  */
                  rex_mask |= REX_W;
                  goto rewrite_modrm_rex;
                }
            }
        }
      else
        {
          /* R_X86_64_PC32 isn't supported.  */
          if (to_reloc_pc32)
            return TRUE;

          modrm = bfd_get_8 (abfd, contents + roff - 1);
          if (opcode == 0x85)
            {
              /* Convert "test %reg, foo@GOTPCREL(%rip)" to
                 "test $foo, %reg".  */
              modrm = 0xc0 | (modrm & 0x38) >> 3;
              opcode = 0xf7;
            }
          else
            {
              /* Convert "binop foo@GOTPCREL(%rip), %reg" to
                 "binop $foo, %reg".  */
              modrm = 0xc0 | (modrm & 0x38) >> 3 | (opcode & 0x3c);
              opcode = 0x81;
            }

          /* Use R_X86_64_32 with 32-bit operand to avoid relocation
             overflow when sign-extending imm32 to imm64.  */
          r_type = (rex & REX_W) != 0 ? R_X86_64_32S : R_X86_64_32;

rewrite_modrm_rex:
          bfd_put_8 (abfd, modrm, contents + roff - 1);

          if (rex)
            {
              /* Move the R bit to the B bit in REX byte.  */
              rex = (rex & ~rex_mask) | (rex & REX_R) >> 2;
              bfd_put_8 (abfd, rex, contents + roff - 3);
            }

          /* No addend for R_X86_64_32/R_X86_64_32S relocations.  */
          irel->r_addend = 0;
        }

      bfd_put_8 (abfd, opcode, contents + roff - 2);
    }

  *r_type_p = r_type;
  irel->r_info = htab->r_info (r_symndx,
                               r_type | R_X86_64_converted_reloc_bit);

  *converted = TRUE;

  return TRUE;
}

/* Look through the relocs for a section during the first phase, and
   calculate needed space in the global offset table, procedure
   linkage table, and dynamic reloc sections.  */

static bfd_boolean
elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
                         asection *sec,
                         const Elf_Internal_Rela *relocs)
{
  struct elf_x86_link_hash_table *htab;
  Elf_Internal_Shdr *symtab_hdr;
  struct elf_link_hash_entry **sym_hashes;
  const Elf_Internal_Rela *rel;
  const Elf_Internal_Rela *rel_end;
  asection *sreloc;
  bfd_byte *contents;
  bfd_boolean converted;

  if (bfd_link_relocatable (info))
    return TRUE;

  /* Don't do anything special with non-loaded, non-alloced sections.
     In particular, any relocs in such sections should not affect GOT
     and PLT reference counting (ie. we don't allow them to create GOT
     or PLT entries), there's no possibility or desire to optimize TLS
     relocs, and there's not much point in propagating relocs to shared
     libs that the dynamic linker won't relocate.  */
  if ((sec->flags & SEC_ALLOC) == 0)
    return TRUE;

  htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
  if (htab == NULL)
    {
      sec->check_relocs_failed = 1;
      return FALSE;
    }

  BFD_ASSERT (is_x86_elf (abfd, htab));

  /* Get the section contents.  */
  if (elf_section_data (sec)->this_hdr.contents != NULL)
    contents = elf_section_data (sec)->this_hdr.contents;
  else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
    {
      sec->check_relocs_failed = 1;
      return FALSE;
    }

  symtab_hdr = &elf_symtab_hdr (abfd);
  sym_hashes = elf_sym_hashes (abfd);

  converted = FALSE;

  sreloc = NULL;

  rel_end = relocs + sec->reloc_count;
  for (rel = relocs; rel < rel_end; rel++)
    {
      unsigned int r_type;
      unsigned int r_symndx;
      struct elf_link_hash_entry *h;
      struct elf_x86_link_hash_entry *eh;
      Elf_Internal_Sym *isym;
      const char *name;
      bfd_boolean size_reloc;
      bfd_boolean converted_reloc;

      r_symndx = htab->r_sym (rel->r_info);
      r_type = ELF32_R_TYPE (rel->r_info);

      if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
        {
          /* xgettext:c-format */
          _bfd_error_handler (_("%pB: bad symbol index: %d"),
                              abfd, r_symndx);
          goto error_return;
        }

      if (r_symndx < symtab_hdr->sh_info)
        {
          /* A local symbol.  */
          isym = bfd_sym_from_r_symndx (&htab->sym_cache,
                                        abfd, r_symndx);
          if (isym == NULL)
            goto error_return;

          /* Check relocation against local STT_GNU_IFUNC symbol.  */
          if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
            {
              h = _bfd_elf_x86_get_local_sym_hash (htab, abfd, rel,
                                                   TRUE);
              if (h == NULL)
                goto error_return;

              /* Fake a STT_GNU_IFUNC symbol.  */
              h->root.root.string = bfd_elf_sym_name (abfd, symtab_hdr,
                                                      isym, NULL);
              h->type = STT_GNU_IFUNC;
              h->def_regular = 1;
              h->ref_regular = 1;
              h->forced_local = 1;
              h->root.type = bfd_link_hash_defined;
            }
          else
            h = NULL;
        }
      else
        {
          isym = NULL;
          h = sym_hashes[r_symndx - symtab_hdr->sh_info];
          while (h->root.type == bfd_link_hash_indirect
                 || h->root.type == bfd_link_hash_warning)
            h = (struct elf_link_hash_entry *) h->root.u.i.link;
        }

      /* Check invalid x32 relocations.  */
      if (!ABI_64_P (abfd))
        switch (r_type)
          {
          default:
            break;

          case R_X86_64_DTPOFF64:
          case R_X86_64_TPOFF64:
          case R_X86_64_PC64:
          case R_X86_64_GOTOFF64:
          case R_X86_64_GOT64:
          case R_X86_64_GOTPCREL64:
          case R_X86_64_GOTPC64:
          case R_X86_64_GOTPLT64:
          case R_X86_64_PLTOFF64:
              {
                if (h)
                  name = h->root.root.string;
                else
                  name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
                                           NULL);
                _bfd_error_handler
                  /* xgettext:c-format */
                  (_("%pB: relocation %s against symbol `%s' isn't "
                     "supported in x32 mode"), abfd,
                   x86_64_elf_howto_table[r_type].name, name);
                bfd_set_error (bfd_error_bad_value);
                goto error_return;
              }
            break;
          }

      if (h != NULL)
        {
          /* It is referenced by a non-shared object. */
          h->ref_regular = 1;

          if (h->type == STT_GNU_IFUNC)
            elf_tdata (info->output_bfd)->has_gnu_symbols
              |= elf_gnu_symbol_ifunc;
        }

      converted_reloc = FALSE;
      if ((r_type == R_X86_64_GOTPCREL
           || r_type == R_X86_64_GOTPCRELX
           || r_type == R_X86_64_REX_GOTPCRELX)
          && (h == NULL || h->type != STT_GNU_IFUNC))
        {
          Elf_Internal_Rela *irel = (Elf_Internal_Rela *) rel;
          if (!elf_x86_64_convert_load_reloc (abfd, contents, &r_type,
                                              irel, h, &converted_reloc,
                                              info))
            goto error_return;

          if (converted_reloc)
            converted = TRUE;
        }

      if (! elf_x86_64_tls_transition (info, abfd, sec, contents,
                                       symtab_hdr, sym_hashes,
                                       &r_type, GOT_UNKNOWN,
                                       rel, rel_end, h, r_symndx, FALSE))
        goto error_return;

      /* Check if _GLOBAL_OFFSET_TABLE_ is referenced.  */
      if (h == htab->elf.hgot)
        htab->got_referenced = TRUE;

      eh = (struct elf_x86_link_hash_entry *) h;
      switch (r_type)
        {
        case R_X86_64_TLSLD:
          htab->tls_ld_or_ldm_got.refcount = 1;
          goto create_got;

        case R_X86_64_TPOFF32:
          if (!bfd_link_executable (info) && ABI_64_P (abfd))
            return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym,
                                        &x86_64_elf_howto_table[r_type]);
          if (eh != NULL)
            eh->zero_undefweak &= 0x2;
          break;

        case R_X86_64_GOTTPOFF:
          if (!bfd_link_executable (info))
            info->flags |= DF_STATIC_TLS;
          /* Fall through */

        case R_X86_64_GOT32:
        case R_X86_64_GOTPCREL:
        case R_X86_64_GOTPCRELX:
        case R_X86_64_REX_GOTPCRELX:
        case R_X86_64_TLSGD:
        case R_X86_64_GOT64:
        case R_X86_64_GOTPCREL64:
        case R_X86_64_GOTPLT64:
        case R_X86_64_GOTPC32_TLSDESC:
        case R_X86_64_TLSDESC_CALL:
          /* This symbol requires a global offset table entry.  */
          {
            int tls_type, old_tls_type;

            switch (r_type)
              {
              default: tls_type = GOT_NORMAL; break;
              case R_X86_64_TLSGD: tls_type = GOT_TLS_GD; break;
              case R_X86_64_GOTTPOFF: tls_type = GOT_TLS_IE; break;
              case R_X86_64_GOTPC32_TLSDESC:
              case R_X86_64_TLSDESC_CALL:
                tls_type = GOT_TLS_GDESC; break;
              }

            if (h != NULL)
              {
                h->got.refcount = 1;
                old_tls_type = eh->tls_type;
              }
            else
              {
                bfd_signed_vma *local_got_refcounts;

                /* This is a global offset table entry for a local symbol.  */
                local_got_refcounts = elf_local_got_refcounts (abfd);
                if (local_got_refcounts == NULL)
                  {
                    bfd_size_type size;

                    size = symtab_hdr->sh_info;
                    size *= sizeof (bfd_signed_vma)
                      + sizeof (bfd_vma) + sizeof (char);
                    local_got_refcounts = ((bfd_signed_vma *)
                                           bfd_zalloc (abfd, size));
                    if (local_got_refcounts == NULL)
                      goto error_return;
                    elf_local_got_refcounts (abfd) = local_got_refcounts;
                    elf_x86_local_tlsdesc_gotent (abfd)
                      = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
                    elf_x86_local_got_tls_type (abfd)
                      = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
                  }
                local_got_refcounts[r_symndx] = 1;
                old_tls_type
                  = elf_x86_local_got_tls_type (abfd) [r_symndx];
              }

            /* If a TLS symbol is accessed using IE at least once,
               there is no point to use dynamic model for it.  */
            if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
                && (! GOT_TLS_GD_ANY_P (old_tls_type)
                    || tls_type != GOT_TLS_IE))
              {
                if (old_tls_type == GOT_TLS_IE && GOT_TLS_GD_ANY_P (tls_type))
                  tls_type = old_tls_type;
                else if (GOT_TLS_GD_ANY_P (old_tls_type)
                         && GOT_TLS_GD_ANY_P (tls_type))
                  tls_type |= old_tls_type;
                else
                  {
                    if (h)
                      name = h->root.root.string;
                    else
                      name = bfd_elf_sym_name (abfd, symtab_hdr,
                                               isym, NULL);
                    _bfd_error_handler
                      /* xgettext:c-format */
                      (_("%pB: '%s' accessed both as normal and"
                         " thread local symbol"),
                       abfd, name);
                    bfd_set_error (bfd_error_bad_value);
                    goto error_return;
                  }
              }

            if (old_tls_type != tls_type)
              {
                if (eh != NULL)
                  eh->tls_type = tls_type;
                else
                  elf_x86_local_got_tls_type (abfd) [r_symndx] = tls_type;
              }
          }
          /* Fall through */

        case R_X86_64_GOTOFF64:
        case R_X86_64_GOTPC32:
        case R_X86_64_GOTPC64:
        create_got:
          if (eh != NULL)
            eh->zero_undefweak &= 0x2;
          break;

        case R_X86_64_PLT32:
        case R_X86_64_PLT32_BND:
          /* This symbol requires a procedure linkage table entry.  We
             actually build the entry in adjust_dynamic_symbol,
             because this might be a case of linking PIC code which is
             never referenced by a dynamic object, in which case we
             don't need to generate a procedure linkage table entry
             after all.  */

          /* If this is a local symbol, we resolve it directly without
             creating a procedure linkage table entry.  */
          if (h == NULL)
            continue;

          eh->zero_undefweak &= 0x2;
          h->needs_plt = 1;
          h->plt.refcount = 1;
          break;

        case R_X86_64_PLTOFF64:
          /* This tries to form the 'address' of a function relative
             to GOT.  For global symbols we need a PLT entry.  */
          if (h != NULL)
            {
              h->needs_plt = 1;
              h->plt.refcount = 1;
            }
          goto create_got;

        case R_X86_64_SIZE32:
        case R_X86_64_SIZE64:
          size_reloc = TRUE;
          goto do_size;

        case R_X86_64_32:
          if (!ABI_64_P (abfd))
            goto pointer;
          /* Fall through.  */
        case R_X86_64_8:
        case R_X86_64_16:
        case R_X86_64_32S:
          /* Check relocation overflow as these relocs may lead to
             run-time relocation overflow.  Don't error out for
             sections we don't care about, such as debug sections or
             when relocation overflow check is disabled.  */
          if (!info->no_reloc_overflow_check
              && !converted_reloc
              && (bfd_link_pic (info)
                  || (bfd_link_executable (info)
                      && h != NULL
                      && !h->def_regular
                      && h->def_dynamic
                      && (sec->flags & SEC_READONLY) == 0)))
            return elf_x86_64_need_pic (info, abfd, sec, h, symtab_hdr, isym,
                                        &x86_64_elf_howto_table[r_type]);
          /* Fall through.  */

        case R_X86_64_PC8:
        case R_X86_64_PC16:
        case R_X86_64_PC32:
        case R_X86_64_PC32_BND:
        case R_X86_64_PC64:
        case R_X86_64_64:
pointer:
          if (eh != NULL && (sec->flags & SEC_CODE) != 0)
            eh->zero_undefweak |= 0x2;
          /* We are called after all symbols have been resolved.  Only
             relocation against STT_GNU_IFUNC symbol must go through
             PLT.  */
          if (h != NULL
              && (bfd_link_executable (info)
                  || h->type == STT_GNU_IFUNC))
            {
              bfd_boolean func_pointer_ref = FALSE;

              if (r_type == R_X86_64_PC32)
                {
                  /* Since something like ".long foo - ." may be used
                     as pointer, make sure that PLT is used if foo is
                     a function defined in a shared library.  */
                  if ((sec->flags & SEC_CODE) == 0)
                    {
                      h->pointer_equality_needed = 1;
                      if (bfd_link_pie (info)
                          && h->type == STT_FUNC
                          && !h->def_regular
                          && h->def_dynamic)
                        {
                          h->needs_plt = 1;
                          h->plt.refcount = 1;
                        }
                    }
                }
              else if (r_type != R_X86_64_PC32_BND
                       && r_type != R_X86_64_PC64)
                {
                  h->pointer_equality_needed = 1;
                  /* At run-time, R_X86_64_64 can be resolved for both
                     x86-64 and x32. But R_X86_64_32 and R_X86_64_32S
                     can only be resolved for x32.  */
                  if ((sec->flags & SEC_READONLY) == 0
                      && (r_type == R_X86_64_64
                          || (!ABI_64_P (abfd)
                              && (r_type == R_X86_64_32
                                  || r_type == R_X86_64_32S))))
                    func_pointer_ref = TRUE;
                }

              if (!func_pointer_ref)
                {
                  /* If this reloc is in a read-only section, we might
                     need a copy reloc.  We can't check reliably at this
                     stage whether the section is read-only, as input
                     sections have not yet been mapped to output sections.
                     Tentatively set the flag for now, and correct in
                     adjust_dynamic_symbol.  */
                  h->non_got_ref = 1;

                  /* We may need a .plt entry if the symbol is a function
                     defined in a shared lib or is a function referenced
                     from the code or read-only section.  */
                  if (!h->def_regular
                      || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0)
                    h->plt.refcount = 1;
                }
            }

          size_reloc = FALSE;
do_size:
          if (NEED_DYNAMIC_RELOCATION_P (info, TRUE, h, sec, r_type,
                                         htab->pointer_r_type))
            {
              struct elf_dyn_relocs *p;
              struct elf_dyn_relocs **head;

              /* We must copy these reloc types into the output file.
                 Create a reloc section in dynobj and make room for
                 this reloc.  */
              if (sreloc == NULL)
                {
                  sreloc = _bfd_elf_make_dynamic_reloc_section
                    (sec, htab->elf.dynobj, ABI_64_P (abfd) ? 3 : 2,
                     abfd, /*rela?*/ TRUE);

                  if (sreloc == NULL)
                    goto error_return;
                }

              /* If this is a global symbol, we count the number of
                 relocations we need for this symbol.  */
              if (h != NULL)
                head = &eh->dyn_relocs;
              else
                {
                  /* Track dynamic relocs needed for local syms too.
                     We really need local syms available to do this
                     easily.  Oh well.  */
                  asection *s;
                  void **vpp;

                  isym = bfd_sym_from_r_symndx (&htab->sym_cache,
                                                abfd, r_symndx);
                  if (isym == NULL)
                    goto error_return;

                  s = bfd_section_from_elf_index (abfd, isym->st_shndx);
                  if (s == NULL)
                    s = sec;

                  /* Beware of type punned pointers vs strict aliasing
                     rules.  */
                  vpp = &(elf_section_data (s)->local_dynrel);
                  head = (struct elf_dyn_relocs **)vpp;
                }

              p = *head;
              if (p == NULL || p->sec != sec)
                {
                  bfd_size_type amt = sizeof *p;

                  p = ((struct elf_dyn_relocs *)
                       bfd_alloc (htab->elf.dynobj, amt));
                  if (p == NULL)
                    goto error_return;
                  p->next = *head;
                  *head = p;
                  p->sec = sec;
                  p->count = 0;
                  p->pc_count = 0;
                }

              p->count += 1;
              /* Count size relocation as PC-relative relocation.  */
              if (X86_PCREL_TYPE_P (r_type) || size_reloc)
                p->pc_count += 1;
            }
          break;

          /* This relocation describes the C++ object vtable hierarchy.
             Reconstruct it for later use during GC.  */
        case R_X86_64_GNU_VTINHERIT:
          if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
            goto error_return;
          break;

          /* This relocation describes which C++ vtable entries are actually
             used.  Record for later use during GC.  */
        case R_X86_64_GNU_VTENTRY:
          BFD_ASSERT (h != NULL);
          if (h != NULL
              && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
            goto error_return;
          break;

        default:
          break;
        }
    }

  if (elf_section_data (sec)->this_hdr.contents != contents)
    {
      if (!converted && !info->keep_memory)
        free (contents);
      else
        {
          /* Cache the section contents for elf_link_input_bfd if any
             load is converted or --no-keep-memory isn't used.  */
          elf_section_data (sec)->this_hdr.contents = contents;
        }
    }

  /* Cache relocations if any load is converted.  */
  if (elf_section_data (sec)->relocs != relocs && converted)
    elf_section_data (sec)->relocs = (Elf_Internal_Rela *) relocs;

  return TRUE;

error_return:
  if (elf_section_data (sec)->this_hdr.contents != contents)
    free (contents);
  sec->check_relocs_failed = 1;
  return FALSE;
}

/* Return the relocation value for @tpoff relocation
   if STT_TLS virtual address is ADDRESS.  */

static bfd_vma
elf_x86_64_tpoff (struct bfd_link_info *info, bfd_vma address)
{
  struct elf_link_hash_table *htab = elf_hash_table (info);
  const struct elf_backend_data *bed = get_elf_backend_data (info->output_bfd);
  bfd_vma static_tls_size;

  /* If tls_segment is NULL, we should have signalled an error already.  */
  if (htab->tls_sec == NULL)
    return 0;

  /* Consider special static TLS alignment requirements.  */
  static_tls_size = BFD_ALIGN (htab->tls_size, bed->static_tls_alignment);
  return address - static_tls_size - htab->tls_sec->vma;
}

/* Relocate an x86_64 ELF section.  */

static bfd_boolean
elf_x86_64_relocate_section (bfd *output_bfd,
                             struct bfd_link_info *info,
                             bfd *input_bfd,
                             asection *input_section,
                             bfd_byte *contents,
                             Elf_Internal_Rela *relocs,
                             Elf_Internal_Sym *local_syms,
                             asection **local_sections)
{
  struct elf_x86_link_hash_table *htab;
  Elf_Internal_Shdr *symtab_hdr;
  struct elf_link_hash_entry **sym_hashes;
  bfd_vma *local_got_offsets;
  bfd_vma *local_tlsdesc_gotents;
  Elf_Internal_Rela *rel;
  Elf_Internal_Rela *wrel;
  Elf_Internal_Rela *relend;
  unsigned int plt_entry_size;

  /* Skip if check_relocs failed.  */
  if (input_section->check_relocs_failed)
    return FALSE;

  htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
  if (htab == NULL)
    return FALSE;

  BFD_ASSERT (is_x86_elf (input_bfd, htab));

  plt_entry_size = htab->plt.plt_entry_size;
  symtab_hdr = &elf_symtab_hdr (input_bfd);
  sym_hashes = elf_sym_hashes (input_bfd);
  local_got_offsets = elf_local_got_offsets (input_bfd);
  local_tlsdesc_gotents = elf_x86_local_tlsdesc_gotent (input_bfd);

  _bfd_x86_elf_set_tls_module_base (info);

  rel = wrel = relocs;
  relend = relocs + input_section->reloc_count;
  for (; rel < relend; wrel++, rel++)
    {
      unsigned int r_type, r_type_tls;
      reloc_howto_type *howto;
      unsigned long r_symndx;
      struct elf_link_hash_entry *h;
      struct elf_x86_link_hash_entry *eh;
      Elf_Internal_Sym *sym;
      asection *sec;
      bfd_vma off, offplt, plt_offset;
      bfd_vma relocation;
      bfd_boolean unresolved_reloc;
      bfd_reloc_status_type r;
      int tls_type;
      asection *base_got, *resolved_plt;
      bfd_vma st_size;
      bfd_boolean resolved_to_zero;
      bfd_boolean relative_reloc;
      bfd_boolean converted_reloc;
      bfd_boolean need_copy_reloc_in_pie;

      r_type = ELF32_R_TYPE (rel->r_info);
      if (r_type == (int) R_X86_64_GNU_VTINHERIT
          || r_type == (int) R_X86_64_GNU_VTENTRY)
        {
          if (wrel != rel)
            *wrel = *rel;
          continue;
        }

      converted_reloc = (r_type & R_X86_64_converted_reloc_bit) != 0;
      r_type &= ~R_X86_64_converted_reloc_bit;

      if (r_type >= (int) R_X86_64_standard)
        return _bfd_unrecognized_reloc (input_bfd, input_section, r_type);

      if (r_type != (int) R_X86_64_32
          || ABI_64_P (output_bfd))
        howto = x86_64_elf_howto_table + r_type;
      else
        howto = (x86_64_elf_howto_table
                 + ARRAY_SIZE (x86_64_elf_howto_table) - 1);
      r_symndx = htab->r_sym (rel->r_info);
      h = NULL;
      sym = NULL;
      sec = NULL;
      unresolved_reloc = FALSE;
      if (r_symndx < symtab_hdr->sh_info)
        {
          sym = local_syms + r_symndx;
          sec = local_sections[r_symndx];

          relocation = _bfd_elf_rela_local_sym (output_bfd, sym,
                                                &sec, rel);
          st_size = sym->st_size;

          /* Relocate against local STT_GNU_IFUNC symbol.  */
          if (!bfd_link_relocatable (info)
              && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
            {
              h = _bfd_elf_x86_get_local_sym_hash (htab, input_bfd,
                                                   rel, FALSE);
              if (h == NULL)
                abort ();

              /* Set STT_GNU_IFUNC symbol value.  */
              h->root.u.def.value = sym->st_value;
              h->root.u.def.section = sec;
            }
        }
      else
        {
          bfd_boolean warned ATTRIBUTE_UNUSED;
          bfd_boolean ignored ATTRIBUTE_UNUSED;

          RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
                                   r_symndx, symtab_hdr, sym_hashes,
                                   h, sec, relocation,
                                   unresolved_reloc, warned, ignored);
          st_size = h->size;
        }

      if (sec != NULL && discarded_section (sec))
        {
          _bfd_clear_contents (howto, input_bfd, input_section,
                               contents + rel->r_offset);
          wrel->r_offset = rel->r_offset;
          wrel->r_info = 0;
          wrel->r_addend = 0;

          /* For ld -r, remove relocations in debug sections against
             sections defined in discarded sections.  Not done for
             eh_frame editing code expects to be present.  */
           if (bfd_link_relocatable (info)
               && (input_section->flags & SEC_DEBUGGING))
             wrel--;

          continue;
        }

      if (bfd_link_relocatable (info))
        {
          if (wrel != rel)
            *wrel = *rel;
          continue;
        }

      if (rel->r_addend == 0 && !ABI_64_P (output_bfd))
        {
          if (r_type == R_X86_64_64)
            {
              /* For x32, treat R_X86_64_64 like R_X86_64_32 and
                 zero-extend it to 64bit if addend is zero.  */
              r_type = R_X86_64_32;
              memset (contents + rel->r_offset + 4, 0, 4);
            }
          else if (r_type == R_X86_64_SIZE64)
            {
              /* For x32, treat R_X86_64_SIZE64 like R_X86_64_SIZE32 and
                 zero-extend it to 64bit if addend is zero.  */
              r_type = R_X86_64_SIZE32;
              memset (contents + rel->r_offset + 4, 0, 4);
            }
        }

      eh = (struct elf_x86_link_hash_entry *) h;

      /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
         it here if it is defined in a non-shared object.  */
      if (h != NULL
          && h->type == STT_GNU_IFUNC
          && h->def_regular)
        {
          bfd_vma plt_index;
          const char *name;

          if ((input_section->flags & SEC_ALLOC) == 0)
            {
              /* Dynamic relocs are not propagated for SEC_DEBUGGING
                 sections because such sections are not SEC_ALLOC and
                 thus ld.so will not process them.  */
              if ((input_section->flags & SEC_DEBUGGING) != 0)
                continue;
              abort ();
            }

          switch (r_type)
            {
            default:
              break;

            case R_X86_64_GOTPCREL:
            case R_X86_64_GOTPCRELX:
            case R_X86_64_REX_GOTPCRELX:
            case R_X86_64_GOTPCREL64:
              base_got = htab->elf.sgot;
              off = h->got.offset;

              if (base_got == NULL)
                abort ();

              if (off == (bfd_vma) -1)
                {
                  /* We can't use h->got.offset here to save state, or
                     even just remember the offset, as finish_dynamic_symbol
                     would use that as offset into .got.  */

                  if (h->plt.offset == (bfd_vma) -1)
                    abort ();

                  if (htab->elf.splt != NULL)
                    {
                      plt_index = (h->plt.offset / plt_entry_size
                                   - htab->plt.has_plt0);
                      off = (plt_index + 3) * GOT_ENTRY_SIZE;
                      base_got = htab->elf.sgotplt;
                    }
                  else
                    {
                      plt_index = h->plt.offset / plt_entry_size;
                      off = plt_index * GOT_ENTRY_SIZE;
                      base_got = htab->elf.igotplt;
                    }

                  if (h->dynindx == -1
                      || h->forced_local
                      || info->symbolic)
                    {
                      /* This references the local defitionion.  We must
                         initialize this entry in the global offset table.
                         Since the offset must always be a multiple of 8,
                         we use the least significant bit to record
                         whether we have initialized it already.

                         When doing a dynamic link, we create a .rela.got
                         relocation entry to initialize the value.  This
                         is done in the finish_dynamic_symbol routine.   */
                      if ((off & 1) != 0)
                        off &= ~1;
                      else
                        {
                          bfd_put_64 (output_bfd, relocation,
                                      base_got->contents + off);
                          /* Note that this is harmless for the GOTPLT64
                             case, as -1 | 1 still is -1.  */
                          h->got.offset |= 1;
                        }
                    }
                }

              relocation = (base_got->output_section->vma
                            + base_got->output_offset + off);

              goto do_relocation;
            }

          if (h->plt.offset == (bfd_vma) -1)
            {
              /* Handle static pointers of STT_GNU_IFUNC symbols.  */
              if (r_type == htab->pointer_r_type
                  && (input_section->flags & SEC_CODE) == 0)
                goto do_ifunc_pointer;
              goto bad_ifunc_reloc;
            }

          /* STT_GNU_IFUNC symbol must go through PLT.  */
          if (htab->elf.splt != NULL)
            {
              if (htab->plt_second != NULL)
                {
                  resolved_plt = htab->plt_second;
                  plt_offset = eh->plt_second.offset;
                }
              else
                {
                  resolved_plt = htab->elf.splt;
                  plt_offset =  h->plt.offset;
                }
            }
          else
            {
              resolved_plt = htab->elf.iplt;
              plt_offset =  h->plt.offset;
            }

          relocation = (resolved_plt->output_section->vma
                        + resolved_plt->output_offset + plt_offset);

          switch (r_type)
            {
            default:
bad_ifunc_reloc:
              if (h->root.root.string)
                name = h->root.root.string;
              else
                name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
                                         NULL);
              _bfd_error_handler
                /* xgettext:c-format */
                (_("%pB: relocation %s against STT_GNU_IFUNC "
                   "symbol `%s' isn't supported"), input_bfd,
                 howto->name, name);
              bfd_set_error (bfd_error_bad_value);
              return FALSE;

            case R_X86_64_32S:
              if (bfd_link_pic (info))
                abort ();
              goto do_relocation;

            case R_X86_64_32:
              if (ABI_64_P (output_bfd))
                goto do_relocation;
              /* FALLTHROUGH */
            case R_X86_64_64:
do_ifunc_pointer:
              if (rel->r_addend != 0)
                {
                  if (h->root.root.string)
                    name = h->root.root.string;
                  else
                    name = bfd_elf_sym_name (input_bfd, symtab_hdr,
                                             sym, NULL);
                  _bfd_error_handler
                    /* xgettext:c-format */
                    (_("%pB: relocation %s against STT_GNU_IFUNC "
                       "symbol `%s' has non-zero addend: %Ld"),
                     input_bfd, howto->name, name, rel->r_addend);
                  bfd_set_error (bfd_error_bad_value);
                  return FALSE;
                }

              /* Generate dynamic relcoation only when there is a
                 non-GOT reference in a shared object or there is no
                 PLT.  */
              if ((bfd_link_pic (info) && h->non_got_ref)
                  || h->plt.offset == (bfd_vma) -1)
                {
                  Elf_Internal_Rela outrel;
                  asection *sreloc;

                  /* Need a dynamic relocation to get the real function
                     address.  */
                  outrel.r_offset = _bfd_elf_section_offset (output_bfd,
                                                             info,
                                                             input_section,
                                                             rel->r_offset);
                  if (outrel.r_offset == (bfd_vma) -1
                      || outrel.r_offset == (bfd_vma) -2)
                    abort ();

                  outrel.r_offset += (input_section->output_section->vma
                                      + input_section->output_offset);

                  if (POINTER_LOCAL_IFUNC_P (info, h))
                    {
                      info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
                                              h->root.root.string,
                                              h->root.u.def.section->owner);

                      /* This symbol is resolved locally.  */
                      outrel.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
                      outrel.r_addend = (h->root.u.def.value
                                         + h->root.u.def.section->output_section->vma
                                         + h->root.u.def.section->output_offset);
                    }
                  else
                    {
                      outrel.r_info = htab->r_info (h->dynindx, r_type);
                      outrel.r_addend = 0;
                    }

                  /* Dynamic relocations are stored in
                     1. .rela.ifunc section in PIC object.
                     2. .rela.got section in dynamic executable.
                     3. .rela.iplt section in static executable.  */
                  if (bfd_link_pic (info))
                    sreloc = htab->elf.irelifunc;
                  else if (htab->elf.splt != NULL)
                    sreloc = htab->elf.srelgot;
                  else
                    sreloc = htab->elf.irelplt;
                  elf_append_rela (output_bfd, sreloc, &outrel);

                  /* If this reloc is against an external symbol, we
                     do not want to fiddle with the addend.  Otherwise,
                     we need to include the symbol value so that it
                     becomes an addend for the dynamic reloc.  For an
                     internal symbol, we have updated addend.  */
                  continue;
                }
              /* FALLTHROUGH */
            case R_X86_64_PC32:
            case R_X86_64_PC32_BND:
            case R_X86_64_PC64:
            case R_X86_64_PLT32:
            case R_X86_64_PLT32_BND:
              goto do_relocation;
            }
        }

      resolved_to_zero = (eh != NULL
                          && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));

      /* When generating a shared object, the relocations handled here are
         copied into the output file to be resolved at run time.  */
      switch (r_type)
        {
        case R_X86_64_GOT32:
        case R_X86_64_GOT64:
          /* Relocation is to the entry for this symbol in the global
             offset table.  */
        case R_X86_64_GOTPCREL:
        case R_X86_64_GOTPCRELX:
        case R_X86_64_REX_GOTPCRELX:
        case R_X86_64_GOTPCREL64:
          /* Use global offset table entry as symbol value.  */
        case R_X86_64_GOTPLT64:
          /* This is obsolete and treated the same as GOT64.  */
          base_got = htab->elf.sgot;

          if (htab->elf.sgot == NULL)
            abort ();

          relative_reloc = FALSE;
          if (h != NULL)
            {
              off = h->got.offset;
              if (h->needs_plt
                  && h->plt.offset != (bfd_vma)-1
                  && off == (bfd_vma)-1)
                {
                  /* We can't use h->got.offset here to save
                     state, or even just remember the offset, as
                     finish_dynamic_symbol would use that as offset into
                     .got.  */
                  bfd_vma plt_index = (h->plt.offset / plt_entry_size
                                       - htab->plt.has_plt0);
                  off = (plt_index + 3) * GOT_ENTRY_SIZE;
                  base_got = htab->elf.sgotplt;
                }

              if (RESOLVED_LOCALLY_P (info, h, htab))
                {
                  /* We must initialize this entry in the global offset
                     table.  Since the offset must always be a multiple
                     of 8, we use the least significant bit to record
                     whether we have initialized it already.

                     When doing a dynamic link, we create a .rela.got
                     relocation entry to initialize the value.  This is
                     done in the finish_dynamic_symbol routine.  */
                  if ((off & 1) != 0)
                    off &= ~1;
                  else
                    {
                      bfd_put_64 (output_bfd, relocation,
                                  base_got->contents + off);
                      /* Note that this is harmless for the GOTPLT64 case,
                         as -1 | 1 still is -1.  */
                      h->got.offset |= 1;

                      if (GENERATE_RELATIVE_RELOC_P (info, h))
                        {
                          /* If this symbol isn't dynamic in PIC,
                             generate R_X86_64_RELATIVE here.  */
                          eh->no_finish_dynamic_symbol = 1;
                          relative_reloc = TRUE;
                        }
                    }
                }
              else
                unresolved_reloc = FALSE;
            }
          else
            {
              if (local_got_offsets == NULL)
                abort ();

              off = local_got_offsets[r_symndx];

              /* The offset must always be a multiple of 8.  We use
                 the least significant bit to record whether we have
                 already generated the necessary reloc.  */
              if ((off & 1) != 0)
                off &= ~1;
              else
                {
                  bfd_put_64 (output_bfd, relocation,
                              base_got->contents + off);
                  local_got_offsets[r_symndx] |= 1;

                  if (bfd_link_pic (info))
                    relative_reloc = TRUE;
                }
            }

          if (relative_reloc)
            {
              asection *s;
              Elf_Internal_Rela outrel;

              /* We need to generate a R_X86_64_RELATIVE reloc
                 for the dynamic linker.  */
              s = htab->elf.srelgot;
              if (s == NULL)
                abort ();

              outrel.r_offset = (base_got->output_section->vma
                                 + base_got->output_offset
                                 + off);
              outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
              outrel.r_addend = relocation;
              elf_append_rela (output_bfd, s, &outrel);
            }

          if (off >= (bfd_vma) -2)
            abort ();

          relocation = base_got->output_section->vma
                       + base_got->output_offset + off;
          if (r_type != R_X86_64_GOTPCREL
              && r_type != R_X86_64_GOTPCRELX
              && r_type != R_X86_64_REX_GOTPCRELX
              && r_type != R_X86_64_GOTPCREL64)
            relocation -= htab->elf.sgotplt->output_section->vma
                          - htab->elf.sgotplt->output_offset;

          break;

        case R_X86_64_GOTOFF64:
          /* Relocation is relative to the start of the global offset
             table.  */

          /* Check to make sure it isn't a protected function or data
             symbol for shared library since it may not be local when
             used as function address or with copy relocation.  We also
             need to make sure that a symbol is referenced locally.  */
          if (bfd_link_pic (info) && h)
            {
              if (!h->def_regular)
                {
                  const char *v;

                  switch (ELF_ST_VISIBILITY (h->other))
                    {
                    case STV_HIDDEN:
                      v = _("hidden symbol");
                      break;
                    case STV_INTERNAL:
                      v = _("internal symbol");
                      break;
                    case STV_PROTECTED:
                      v = _("protected symbol");
                      break;
                    default:
                      v = _("symbol");
                      break;
                    }

                  _bfd_error_handler
                    /* xgettext:c-format */
                    (_("%pB: relocation R_X86_64_GOTOFF64 against undefined %s"
                       " `%s' can not be used when making a shared object"),
                     input_bfd, v, h->root.root.string);
                  bfd_set_error (bfd_error_bad_value);
                  return FALSE;
                }
              else if (!bfd_link_executable (info)
                       && !SYMBOL_REFERENCES_LOCAL_P (info, h)
                       && (h->type == STT_FUNC
                           || h->type == STT_OBJECT)
                       && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
                {
                  _bfd_error_handler
              /* xgettext:c-format */
                    (_("%pB: relocation R_X86_64_GOTOFF64 against protected %s"
                       " `%s' can not be used when making a shared object"),
                     input_bfd,
                     h->type == STT_FUNC ? "function" : "data",
                     h->root.root.string);
                  bfd_set_error (bfd_error_bad_value);
              return FALSE;
                }
            }

          /* Note that sgot is not involved in this
             calculation.  We always want the start of .got.plt.  If we
             defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
             permitted by the ABI, we might have to change this
             calculation.  */
          relocation -= htab->elf.sgotplt->output_section->vma
                        + htab->elf.sgotplt->output_offset;
          break;

        case R_X86_64_GOTPC32:
        case R_X86_64_GOTPC64:
          /* Use global offset table as symbol value.  */
          relocation = htab->elf.sgotplt->output_section->vma
                       + htab->elf.sgotplt->output_offset;
          unresolved_reloc = FALSE;
          break;

        case R_X86_64_PLTOFF64:
          /* Relocation is PLT entry relative to GOT.  For local
             symbols it's the symbol itself relative to GOT.  */
          if (h != NULL
              /* See PLT32 handling.  */
              && (h->plt.offset != (bfd_vma) -1
                  || eh->plt_got.offset != (bfd_vma) -1)
              && htab->elf.splt != NULL)
            {
              if (eh->plt_got.offset != (bfd_vma) -1)
                {
                  /* Use the GOT PLT.  */
                  resolved_plt = htab->plt_got;
                  plt_offset = eh->plt_got.offset;
                }
              else if (htab->plt_second != NULL)
                {
                  resolved_plt = htab->plt_second;
                  plt_offset = eh->plt_second.offset;
                }
              else
                {
                  resolved_plt = htab->elf.splt;
                  plt_offset = h->plt.offset;
                }

              relocation = (resolved_plt->output_section->vma
                            + resolved_plt->output_offset
                            + plt_offset);
              unresolved_reloc = FALSE;
            }

          relocation -= htab->elf.sgotplt->output_section->vma
                        + htab->elf.sgotplt->output_offset;
          break;

        case R_X86_64_PLT32:
        case R_X86_64_PLT32_BND:
          /* Relocation is to the entry for this symbol in the
             procedure linkage table.  */

          /* Resolve a PLT32 reloc against a local symbol directly,
             without using the procedure linkage table.  */
          if (h == NULL)
            break;

          if ((h->plt.offset == (bfd_vma) -1
               && eh->plt_got.offset == (bfd_vma) -1)
              || htab->elf.splt == NULL)
            {
              /* We didn't make a PLT entry for this symbol.  This
                 happens when statically linking PIC code, or when
                 using -Bsymbolic.  */
              break;
            }

use_plt:
          if (h->plt.offset != (bfd_vma) -1)
            {
              if (htab->plt_second != NULL)
                {
                  resolved_plt = htab->plt_second;
                  plt_offset = eh->plt_second.offset;
                }
              else
                {
                  resolved_plt = htab->elf.splt;
                  plt_offset = h->plt.offset;
                }
            }
          else
            {
              /* Use the GOT PLT.  */
              resolved_plt = htab->plt_got;
              plt_offset = eh->plt_got.offset;
            }

          relocation = (resolved_plt->output_section->vma
                        + resolved_plt->output_offset
                        + plt_offset);
          unresolved_reloc = FALSE;
          break;

        case R_X86_64_SIZE32:
        case R_X86_64_SIZE64:
          /* Set to symbol size.  */
          relocation = st_size;
          goto direct;

        case R_X86_64_PC8:
        case R_X86_64_PC16:
        case R_X86_64_PC32:
        case R_X86_64_PC32_BND:
          /* Don't complain about -fPIC if the symbol is undefined when
             building executable unless it is unresolved weak symbol,
             references a dynamic definition in PIE or -z nocopyreloc
             is used.  */
          if ((input_section->flags & SEC_ALLOC) != 0
              && (input_section->flags & SEC_READONLY) != 0
              && h != NULL
              && ((bfd_link_executable (info)
                   && ((h->root.type == bfd_link_hash_undefweak
                        && !resolved_to_zero)
                       || (bfd_link_pie (info)
                           && !h->def_regular
                           && h->def_dynamic)
                       || ((info->nocopyreloc
                            || (eh->def_protected
                                && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
                           && h->def_dynamic
                           && !(h->root.u.def.section->flags & SEC_CODE))))
                  || bfd_link_dll (info)))
            {
              bfd_boolean fail = FALSE;
              if (SYMBOL_REFERENCES_LOCAL_P (info, h))
                {
                  /* Symbol is referenced locally.  Make sure it is
                     defined locally.  */
                  fail = !(h->def_regular || ELF_COMMON_DEF_P (h));
                }
              else if (!(bfd_link_pie (info)
                         && (h->needs_copy || eh->needs_copy)))
                {
                  /* Symbol doesn't need copy reloc and isn't referenced
                     locally.  Address of protected function may not be
                     reachable at run-time.  */
                  fail = (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
                          || (ELF_ST_VISIBILITY (h->other) == STV_PROTECTED
                              && h->type == STT_FUNC));
                }

              if (fail)
                return elf_x86_64_need_pic (info, input_bfd, input_section,
                                            h, NULL, NULL, howto);
            }
          /* Since x86-64 has PC-relative PLT, we can use PLT in PIE
             as function address.  */
          else if (h != NULL
                   && (input_section->flags & SEC_CODE) == 0
                   && bfd_link_pie (info)
                   && h->type == STT_FUNC
                   && !h->def_regular
                   && h->def_dynamic)
            goto use_plt;
          /* Fall through.  */

        case R_X86_64_8:
        case R_X86_64_16:
        case R_X86_64_32:
        case R_X86_64_PC64:
        case R_X86_64_64:
          /* FIXME: The ABI says the linker should make sure the value is
             the same when it's zeroextended to 64 bit.  */

direct:
          if ((input_section->flags & SEC_ALLOC) == 0)
            break;

          need_copy_reloc_in_pie = (bfd_link_pie (info)
                                    && h != NULL
                                    && (h->needs_copy
                                        || eh->needs_copy
                                        || (h->root.type
                                            == bfd_link_hash_undefined))
                                    && (X86_PCREL_TYPE_P (r_type)
                                        || X86_SIZE_TYPE_P (r_type)));

          if (GENERATE_DYNAMIC_RELOCATION_P (info, eh, r_type,
                                             need_copy_reloc_in_pie,
                                             resolved_to_zero, FALSE))
            {
              Elf_Internal_Rela outrel;
              bfd_boolean skip, relocate;
              asection *sreloc;

              /* When generating a shared object, these relocations
                 are copied into the output file to be resolved at run
                 time.  */
              skip = FALSE;
              relocate = FALSE;

              outrel.r_offset =
                _bfd_elf_section_offset (output_bfd, info, input_section,
                                         rel->r_offset);
              if (outrel.r_offset == (bfd_vma) -1)
                skip = TRUE;
              else if (outrel.r_offset == (bfd_vma) -2)
                skip = TRUE, relocate = TRUE;

              outrel.r_offset += (input_section->output_section->vma
                                  + input_section->output_offset);

              if (skip)
                memset (&outrel, 0, sizeof outrel);

              else if (COPY_INPUT_RELOC_P (info, h, r_type))
                {
                  outrel.r_info = htab->r_info (h->dynindx, r_type);
                  outrel.r_addend = rel->r_addend;
                }
              else
                {
                  /* This symbol is local, or marked to become local.
                     When relocation overflow check is disabled, we
                     convert R_X86_64_32 to dynamic R_X86_64_RELATIVE.  */
                  if (r_type == htab->pointer_r_type
                      || (r_type == R_X86_64_32
                          && info->no_reloc_overflow_check))
                    {
                      relocate = TRUE;
                      outrel.r_info = htab->r_info (0, R_X86_64_RELATIVE);
                      outrel.r_addend = relocation + rel->r_addend;
                    }
                  else if (r_type == R_X86_64_64
                           && !ABI_64_P (output_bfd))
                    {
                      relocate = TRUE;
                      outrel.r_info = htab->r_info (0,
                                                    R_X86_64_RELATIVE64);
                      outrel.r_addend = relocation + rel->r_addend;
                      /* Check addend overflow.  */
                      if ((outrel.r_addend & 0x80000000)
                          != (rel->r_addend & 0x80000000))
                        {
                          const char *name;
                          int addend = rel->r_addend;
                          if (h && h->root.root.string)
                            name = h->root.root.string;
                          else
                            name = bfd_elf_sym_name (input_bfd, symtab_hdr,
                                                     sym, NULL);
                          _bfd_error_handler
                            /* xgettext:c-format */
                            (_("%pB: addend %s%#x in relocation %s against "
                               "symbol `%s' at %#Lx in section `%pA' is "
                               "out of range"),
                             input_bfd, addend < 0 ? "-" : "", addend,
                             howto->name, name, rel->r_offset, input_section);
                          bfd_set_error (bfd_error_bad_value);
                          return FALSE;
                        }
                    }
                  else
                    {
                      long sindx;

                      if (bfd_is_abs_section (sec))
                        sindx = 0;
                      else if (sec == NULL || sec->owner == NULL)
                        {
                          bfd_set_error (bfd_error_bad_value);
                          return FALSE;
                        }
                      else
                        {
                          asection *osec;

                          /* We are turning this relocation into one
                             against a section symbol.  It would be
                             proper to subtract the symbol's value,
                             osec->vma, from the emitted reloc addend,
                             but ld.so expects buggy relocs.  */
                          osec = sec->output_section;
                          sindx = elf_section_data (osec)->dynindx;
                          if (sindx == 0)
                            {
                              asection *oi = htab->elf.text_index_section;
                              sindx = elf_section_data (oi)->dynindx;
                            }
                          BFD_ASSERT (sindx != 0);
                        }

                      outrel.r_info = htab->r_info (sindx, r_type);
                      outrel.r_addend = relocation + rel->r_addend;
                    }
                }

              sreloc = elf_section_data (input_section)->sreloc;

              if (sreloc == NULL || sreloc->contents == NULL)
                {
                  r = bfd_reloc_notsupported;
                  goto check_relocation_error;
                }

              elf_append_rela (output_bfd, sreloc, &outrel);

              /* If this reloc is against an external symbol, we do
                 not want to fiddle with the addend.  Otherwise, we
                 need to include the symbol value so that it becomes
                 an addend for the dynamic reloc.  */
              if (! relocate)
                continue;
            }

          break;

        case R_X86_64_TLSGD:
        case R_X86_64_GOTPC32_TLSDESC:
        case R_X86_64_TLSDESC_CALL:
        case R_X86_64_GOTTPOFF:
          tls_type = GOT_UNKNOWN;
          if (h == NULL && local_got_offsets)
            tls_type = elf_x86_local_got_tls_type (input_bfd) [r_symndx];
          else if (h != NULL)
            tls_type = elf_x86_hash_entry (h)->tls_type;

          r_type_tls = r_type;
          if (! elf_x86_64_tls_transition (info, input_bfd,
                                           input_section, contents,
                                           symtab_hdr, sym_hashes,
                                           &r_type_tls, tls_type, rel,
                                           relend, h, r_symndx, TRUE))
            return FALSE;

          if (r_type_tls == R_X86_64_TPOFF32)
            {
              bfd_vma roff = rel->r_offset;

              BFD_ASSERT (! unresolved_reloc);

              if (r_type == R_X86_64_TLSGD)
                {
                  /* GD->LE transition.  For 64bit, change
                        .byte 0x66; leaq foo@tlsgd(%rip), %rdi
                        .word 0x6666; rex64; call __tls_get_addr@PLT
                     or
                        .byte 0x66; leaq foo@tlsgd(%rip), %rdi
                        .byte 0x66; rex64
                        call *__tls_get_addr@GOTPCREL(%rip)
                        which may be converted to
                        addr32 call __tls_get_addr
                     into:
                        movq %fs:0, %rax
                        leaq foo@tpoff(%rax), %rax
                     For 32bit, change
                        leaq foo@tlsgd(%rip), %rdi
                        .word 0x6666; rex64; call __tls_get_addr@PLT
                     or
                        leaq foo@tlsgd(%rip), %rdi
                        .byte 0x66; rex64
                        call *__tls_get_addr@GOTPCREL(%rip)
                        which may be converted to
                        addr32 call __tls_get_addr
                     into:
                        movl %fs:0, %eax
                        leaq foo@tpoff(%rax), %rax
                     For largepic, change:
                        leaq foo@tlsgd(%rip), %rdi
                        movabsq $__tls_get_addr@pltoff, %rax
                        addq %r15, %rax
                        call *%rax
                     into:
                        movq %fs:0, %rax
                        leaq foo@tpoff(%rax), %rax
                        nopw 0x0(%rax,%rax,1)  */
                  int largepic = 0;
                  if (ABI_64_P (output_bfd))
                    {
                      if (contents[roff + 5] == 0xb8)
                        {
                          memcpy (contents + roff - 3,
                                  "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80"
                                  "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
                          largepic = 1;
                        }
                      else
                        memcpy (contents + roff - 4,
                                "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
                                16);
                    }
                  else
                    memcpy (contents + roff - 3,
                            "\x64\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
                            15);
                  bfd_put_32 (output_bfd,
                              elf_x86_64_tpoff (info, relocation),
                              contents + roff + 8 + largepic);
                  /* Skip R_X86_64_PC32, R_X86_64_PLT32,
                     R_X86_64_GOTPCRELX and R_X86_64_PLTOFF64.  */
                  rel++;
                  wrel++;
                  continue;
                }
              else if (r_type == R_X86_64_GOTPC32_TLSDESC)
                {
                  /* GDesc -> LE transition.
                     It's originally something like:
                     leaq x@tlsdesc(%rip), %rax

                     Change it to:
                     movl $x@tpoff, %rax.  */

                  unsigned int val, type;

                  type = bfd_get_8 (input_bfd, contents + roff - 3);
                  val = bfd_get_8 (input_bfd, contents + roff - 1);
                  bfd_put_8 (output_bfd, 0x48 | ((type >> 2) & 1),
                             contents + roff - 3);
                  bfd_put_8 (output_bfd, 0xc7, contents + roff - 2);
                  bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
                             contents + roff - 1);
                  bfd_put_32 (output_bfd,
                              elf_x86_64_tpoff (info, relocation),
                              contents + roff);
                  continue;
                }
              else if (r_type == R_X86_64_TLSDESC_CALL)
                {
                  /* GDesc -> LE transition.
                     It's originally:
                     call *(%rax)
                     Turn it into:
                     xchg %ax,%ax.  */
                  bfd_put_8 (output_bfd, 0x66, contents + roff);
                  bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
                  continue;
                }
              else if (r_type == R_X86_64_GOTTPOFF)
                {
                  /* IE->LE transition:
                     For 64bit, originally it can be one of:
                     movq foo@gottpoff(%rip), %reg
                     addq foo@gottpoff(%rip), %reg
                     We change it into:
                     movq $foo, %reg
                     leaq foo(%reg), %reg
                     addq $foo, %reg.
                     For 32bit, originally it can be one of:
                     movq foo@gottpoff(%rip), %reg
                     addl foo@gottpoff(%rip), %reg
                     We change it into:
                     movq $foo, %reg
                     leal foo(%reg), %reg
                     addl $foo, %reg. */

                  unsigned int val, type, reg;

                  if (roff >= 3)
                    val = bfd_get_8 (input_bfd, contents + roff - 3);
                  else
                    val = 0;
                  type = bfd_get_8 (input_bfd, contents + roff - 2);
                  reg = bfd_get_8 (input_bfd, contents + roff - 1);
                  reg >>= 3;
                  if (type == 0x8b)
                    {
                      /* movq */
                      if (val == 0x4c)
                        bfd_put_8 (output_bfd, 0x49,
                                   contents + roff - 3);
                      else if (!ABI_64_P (output_bfd) && val == 0x44)
                        bfd_put_8 (output_bfd, 0x41,
                                   contents + roff - 3);
                      bfd_put_8 (output_bfd, 0xc7,
                                 contents + roff - 2);
                      bfd_put_8 (output_bfd, 0xc0 | reg,
                                 contents + roff - 1);
                    }
                  else if (reg == 4)
                    {
                      /* addq/addl -> addq/addl - addressing with %rsp/%r12
                         is special  */
                      if (val == 0x4c)
                        bfd_put_8 (output_bfd, 0x49,
                                   contents + roff - 3);
                      else if (!ABI_64_P (output_bfd) && val == 0x44)
                        bfd_put_8 (output_bfd, 0x41,
                                   contents + roff - 3);
                      bfd_put_8 (output_bfd, 0x81,
                                 contents + roff - 2);
                      bfd_put_8 (output_bfd, 0xc0 | reg,
                                 contents + roff - 1);
                    }
                  else
                    {
                      /* addq/addl -> leaq/leal */
                      if (val == 0x4c)
                        bfd_put_8 (output_bfd, 0x4d,
                                   contents + roff - 3);
                      else if (!ABI_64_P (output_bfd) && val == 0x44)
                        bfd_put_8 (output_bfd, 0x45,
                                   contents + roff - 3);
                      bfd_put_8 (output_bfd, 0x8d,
                                 contents + roff - 2);
                      bfd_put_8 (output_bfd, 0x80 | reg | (reg << 3),
                                 contents + roff - 1);
                    }
                  bfd_put_32 (output_bfd,
                              elf_x86_64_tpoff (info, relocation),
                              contents + roff);
                  continue;
                }
              else
                BFD_ASSERT (FALSE);
            }

          if (htab->elf.sgot == NULL)
            abort ();

          if (h != NULL)
            {
              off = h->got.offset;
              offplt = elf_x86_hash_entry (h)->tlsdesc_got;
            }
          else
            {
              if (local_got_offsets == NULL)
                abort ();

              off = local_got_offsets[r_symndx];
              offplt = local_tlsdesc_gotents[r_symndx];
            }

          if ((off & 1) != 0)
            off &= ~1;
          else
            {
              Elf_Internal_Rela outrel;
              int dr_type, indx;
              asection *sreloc;

              if (htab->elf.srelgot == NULL)
                abort ();

              indx = h && h->dynindx != -1 ? h->dynindx : 0;

              if (GOT_TLS_GDESC_P (tls_type))
                {
                  outrel.r_info = htab->r_info (indx, R_X86_64_TLSDESC);
                  BFD_ASSERT (htab->sgotplt_jump_table_size + offplt
                              + 2 * GOT_ENTRY_SIZE <= htab->elf.sgotplt->size);
                  outrel.r_offset = (htab->elf.sgotplt->output_section->vma
                                     + htab->elf.sgotplt->output_offset
                                     + offplt
                                     + htab->sgotplt_jump_table_size);
                  sreloc = htab->elf.srelplt;
                  if (indx == 0)
                    outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
                  else
                    outrel.r_addend = 0;
                  elf_append_rela (output_bfd, sreloc, &outrel);
                }

              sreloc = htab->elf.srelgot;

              outrel.r_offset = (htab->elf.sgot->output_section->vma
                                 + htab->elf.sgot->output_offset + off);

              if (GOT_TLS_GD_P (tls_type))
                dr_type = R_X86_64_DTPMOD64;
              else if (GOT_TLS_GDESC_P (tls_type))
                goto dr_done;
              else
                dr_type = R_X86_64_TPOFF64;

              bfd_put_64 (output_bfd, 0, htab->elf.sgot->contents + off);
              outrel.r_addend = 0;
              if ((dr_type == R_X86_64_TPOFF64
                   || dr_type == R_X86_64_TLSDESC) && indx == 0)
                outrel.r_addend = relocation - _bfd_x86_elf_dtpoff_base (info);
              outrel.r_info = htab->r_info (indx, dr_type);

              elf_append_rela (output_bfd, sreloc, &outrel);

              if (GOT_TLS_GD_P (tls_type))
                {
                  if (indx == 0)
                    {
                      BFD_ASSERT (! unresolved_reloc);
                      bfd_put_64 (output_bfd,
                                  relocation - _bfd_x86_elf_dtpoff_base (info),
                                  htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
                    }
                  else
                    {
                      bfd_put_64 (output_bfd, 0,
                                  htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
                      outrel.r_info = htab->r_info (indx,
                                                    R_X86_64_DTPOFF64);
                      outrel.r_offset += GOT_ENTRY_SIZE;
                      elf_append_rela (output_bfd, sreloc,
                                                &outrel);
                    }
                }

            dr_done:
              if (h != NULL)
                h->got.offset |= 1;
              else
                local_got_offsets[r_symndx] |= 1;
            }

          if (off >= (bfd_vma) -2
              && ! GOT_TLS_GDESC_P (tls_type))
            abort ();
          if (r_type_tls == r_type)
            {
              if (r_type == R_X86_64_GOTPC32_TLSDESC
                  || r_type == R_X86_64_TLSDESC_CALL)
                relocation = htab->elf.sgotplt->output_section->vma
                  + htab->elf.sgotplt->output_offset
                  + offplt + htab->sgotplt_jump_table_size;
              else
                relocation = htab->elf.sgot->output_section->vma
                  + htab->elf.sgot->output_offset + off;
              unresolved_reloc = FALSE;
            }
          else
            {
              bfd_vma roff = rel->r_offset;

              if (r_type == R_X86_64_TLSGD)
                {
                  /* GD->IE transition.  For 64bit, change
                        .byte 0x66; leaq foo@tlsgd(%rip), %rdi
                        .word 0x6666; rex64; call __tls_get_addr@PLT
                     or
                        .byte 0x66; leaq foo@tlsgd(%rip), %rdi
                        .byte 0x66; rex64
                        call *__tls_get_addr@GOTPCREL(%rip
                        which may be converted to
                        addr32 call __tls_get_addr
                     into:
                        movq %fs:0, %rax
                        addq foo@gottpoff(%rip), %rax
                     For 32bit, change
                        leaq foo@tlsgd(%rip), %rdi
                        .word 0x6666; rex64; call __tls_get_addr@PLT
                     or
                        leaq foo@tlsgd(%rip), %rdi
                        .byte 0x66; rex64;
                        call *__tls_get_addr@GOTPCREL(%rip)
                        which may be converted to
                        addr32 call __tls_get_addr
                     into:
                        movl %fs:0, %eax
                        addq foo@gottpoff(%rip), %rax
                     For largepic, change:
                        leaq foo@tlsgd(%rip), %rdi
                        movabsq $__tls_get_addr@pltoff, %rax
                        addq %r15, %rax
                        call *%rax
                     into:
                        movq %fs:0, %rax
                        addq foo@gottpoff(%rax), %rax
                        nopw 0x0(%rax,%rax,1)  */
                  int largepic = 0;
                  if (ABI_64_P (output_bfd))
                    {
                      if (contents[roff + 5] == 0xb8)
                        {
                          memcpy (contents + roff - 3,
                                  "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05"
                                  "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
                          largepic = 1;
                        }
                      else
                        memcpy (contents + roff - 4,
                                "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
                                16);
                    }
                  else
                    memcpy (contents + roff - 3,
                            "\x64\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
                            15);

                  relocation = (htab->elf.sgot->output_section->vma
                                + htab->elf.sgot->output_offset + off
                                - roff
                                - largepic
                                - input_section->output_section->vma
                                - input_section->output_offset
                                - 12);
                  bfd_put_32 (output_bfd, relocation,
                              contents + roff + 8 + largepic);
                  /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64.  */
                  rel++;
                  wrel++;
                  continue;
                }
              else if (r_type == R_X86_64_GOTPC32_TLSDESC)
                {
                  /* GDesc -> IE transition.
                     It's originally something like:
                     leaq x@tlsdesc(%rip), %rax

                     Change it to:
                     movq x@gottpoff(%rip), %rax # before xchg %ax,%ax.  */

                  /* Now modify the instruction as appropriate. To
                     turn a leaq into a movq in the form we use it, it
                     suffices to change the second byte from 0x8d to
                     0x8b.  */
                  bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);

                  bfd_put_32 (output_bfd,
                              htab->elf.sgot->output_section->vma
                              + htab->elf.sgot->output_offset + off
                              - rel->r_offset
                              - input_section->output_section->vma
                              - input_section->output_offset
                              - 4,
                              contents + roff);
                  continue;
                }
              else if (r_type == R_X86_64_TLSDESC_CALL)
                {
                  /* GDesc -> IE transition.
                     It's originally:
                     call *(%rax)

                     Change it to:
                     xchg %ax, %ax.  */

                  bfd_put_8 (output_bfd, 0x66, contents + roff);
                  bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
                  continue;
                }
              else
                BFD_ASSERT (FALSE);
            }
          break;

        case R_X86_64_TLSLD:
          if (! elf_x86_64_tls_transition (info, input_bfd,
                                           input_section, contents,
                                           symtab_hdr, sym_hashes,
                                           &r_type, GOT_UNKNOWN, rel,
                                           relend, h, r_symndx, TRUE))
            return FALSE;

          if (r_type != R_X86_64_TLSLD)
            {
              /* LD->LE transition:
                        leaq foo@tlsld(%rip), %rdi
                        call __tls_get_addr@PLT
                 For 64bit, we change it into:
                        .word 0x6666; .byte 0x66; movq %fs:0, %rax
                 For 32bit, we change it into:
                        nopl 0x0(%rax); movl %fs:0, %eax
                 Or
                        leaq foo@tlsld(%rip), %rdi;
                        call *__tls_get_addr@GOTPCREL(%rip)
                        which may be converted to
                        addr32 call __tls_get_addr
                 For 64bit, we change it into:
                        .word 0x6666; .word 0x6666; movq %fs:0, %rax
                 For 32bit, we change it into:
                        nopw 0x0(%rax); movl %fs:0, %eax
                 For largepic, change:
                        leaq foo@tlsgd(%rip), %rdi
                        movabsq $__tls_get_addr@pltoff, %rax
                        addq %rbx, %rax
                        call *%rax
                 into
                        data16 data16 data16 nopw %cs:0x0(%rax,%rax,1)
                        movq %fs:0, %eax  */

              BFD_ASSERT (r_type == R_X86_64_TPOFF32);
              if (ABI_64_P (output_bfd))
                {
                  if (contents[rel->r_offset + 5] == 0xb8)
                    memcpy (contents + rel->r_offset - 3,
                            "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0"
                            "\x64\x48\x8b\x04\x25\0\0\0", 22);
                  else if (contents[rel->r_offset + 4] == 0xff
                           || contents[rel->r_offset + 4] == 0x67)
                    memcpy (contents + rel->r_offset - 3,
                            "\x66\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0",
                            13);
                  else
                    memcpy (contents + rel->r_offset - 3,
                            "\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
                }
              else
                {
                  if (contents[rel->r_offset + 4] == 0xff)
                    memcpy (contents + rel->r_offset - 3,
                            "\x66\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0",
                            13);
                  else
                    memcpy (contents + rel->r_offset - 3,
                            "\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
                }
              /* Skip R_X86_64_PC32, R_X86_64_PLT32, R_X86_64_GOTPCRELX
                 and R_X86_64_PLTOFF64.  */
              rel++;
              wrel++;
              continue;
            }

          if (htab->elf.sgot == NULL)
            abort ();

          off = htab->tls_ld_or_ldm_got.offset;
          if (off & 1)
            off &= ~1;
          else
            {
              Elf_Internal_Rela outrel;

              if (htab->elf.srelgot == NULL)
                abort ();

              outrel.r_offset = (htab->elf.sgot->output_section->vma
                                 + htab->elf.sgot->output_offset + off);

              bfd_put_64 (output_bfd, 0,
                          htab->elf.sgot->contents + off);
              bfd_put_64 (output_bfd, 0,
                          htab->elf.sgot->contents + off + GOT_ENTRY_SIZE);
              outrel.r_info = htab->r_info (0, R_X86_64_DTPMOD64);
              outrel.r_addend = 0;
              elf_append_rela (output_bfd, htab->elf.srelgot,
                                        &outrel);
              htab->tls_ld_or_ldm_got.offset |= 1;
            }
          relocation = htab->elf.sgot->output_section->vma
                       + htab->elf.sgot->output_offset + off;
          unresolved_reloc = FALSE;
          break;

        case R_X86_64_DTPOFF32:
          if (!bfd_link_executable (info)
              || (input_section->flags & SEC_CODE) == 0)
            relocation -= _bfd_x86_elf_dtpoff_base (info);
          else
            relocation = elf_x86_64_tpoff (info, relocation);
          break;

        case R_X86_64_TPOFF32:
        case R_X86_64_TPOFF64:
          BFD_ASSERT (bfd_link_executable (info));
          relocation = elf_x86_64_tpoff (info, relocation);
          break;

        case R_X86_64_DTPOFF64:
          BFD_ASSERT ((input_section->flags & SEC_CODE) == 0);
          relocation -= _bfd_x86_elf_dtpoff_base (info);
          break;

        default:
          break;
        }

      /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
         because such sections are not SEC_ALLOC and thus ld.so will
         not process them.  */
      if (unresolved_reloc
          && !((input_section->flags & SEC_DEBUGGING) != 0
               && h->def_dynamic)
          && _bfd_elf_section_offset (output_bfd, info, input_section,
                                      rel->r_offset) != (bfd_vma) -1)
        {
          switch (r_type)
            {
            case R_X86_64_32S:
              sec = h->root.u.def.section;
              if ((info->nocopyreloc
                   || (eh->def_protected
                       && elf_has_no_copy_on_protected (h->root.u.def.section->owner)))
                  && !(h->root.u.def.section->flags & SEC_CODE))
                return elf_x86_64_need_pic (info, input_bfd, input_section,
                                            h, NULL, NULL, howto);
              /* Fall through.  */

            default:
              _bfd_error_handler
                /* xgettext:c-format */
                (_("%pB(%pA+%#Lx): unresolvable %s relocation against symbol `%s'"),
                 input_bfd,
                 input_section,
                 rel->r_offset,
                 howto->name,
                 h->root.root.string);
              return FALSE;
            }
        }

do_relocation:
      r = _bfd_final_link_relocate (howto, input_bfd, input_section,
                                    contents, rel->r_offset,
                                    relocation, rel->r_addend);

check_relocation_error:
      if (r != bfd_reloc_ok)
        {
          const char *name;

          if (h != NULL)
            name = h->root.root.string;
          else
            {
              name = bfd_elf_string_from_elf_section (input_bfd,
                                                      symtab_hdr->sh_link,
                                                      sym->st_name);
              if (name == NULL)
                return FALSE;
              if (*name == '\0')
                name = bfd_section_name (input_bfd, sec);
            }

          if (r == bfd_reloc_overflow)
            {
              if (converted_reloc)
                {
                  info->callbacks->einfo
                    (_("%F%P: failed to convert GOTPCREL relocation; relink with --no-relax\n"));
                  return FALSE;
                }
              (*info->callbacks->reloc_overflow)
                (info, (h ? &h->root : NULL), name, howto->name,
                 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
            }
          else
            {
              _bfd_error_handler
                /* xgettext:c-format */
                (_("%pB(%pA+%#Lx): reloc against `%s': error %d"),
                 input_bfd, input_section,
                 rel->r_offset, name, (int) r);
              return FALSE;
            }
        }

      if (wrel != rel)
        *wrel = *rel;
    }

  if (wrel != rel)
    {
      Elf_Internal_Shdr *rel_hdr;
      size_t deleted = rel - wrel;

      rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section);
      rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
      if (rel_hdr->sh_size == 0)
        {
          /* It is too late to remove an empty reloc section.  Leave
             one NONE reloc.
             ??? What is wrong with an empty section???  */
          rel_hdr->sh_size = rel_hdr->sh_entsize;
          deleted -= 1;
        }
      rel_hdr = _bfd_elf_single_rel_hdr (input_section);
      rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted;
      input_section->reloc_count -= deleted;
    }

  return TRUE;
}

/* Finish up dynamic symbol handling.  We set the contents of various
   dynamic sections here.  */

static bfd_boolean
elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
                                  struct bfd_link_info *info,
                                  struct elf_link_hash_entry *h,
                                  Elf_Internal_Sym *sym)
{
  struct elf_x86_link_hash_table *htab;
  bfd_boolean use_plt_second;
  struct elf_x86_link_hash_entry *eh;
  bfd_boolean local_undefweak;

  htab = elf_x86_hash_table (info, X86_64_ELF_DATA);
  if (htab == NULL)
    return FALSE;

  /* Use the second PLT section only if there is .plt section.  */
  use_plt_second = htab->elf.splt != NULL && htab->plt_second != NULL;

  eh = (struct elf_x86_link_hash_entry *) h;
  if (eh->no_finish_dynamic_symbol)
    abort ();

  /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
     resolved undefined weak symbols in executable so that their
     references have value 0 at run-time.  */
  local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);

  if (h->plt.offset != (bfd_vma) -1)
    {
      bfd_vma plt_index;
      bfd_vma got_offset, plt_offset;
      Elf_Internal_Rela rela;
      bfd_byte *loc;
      asection *plt, *gotplt, *relplt, *resolved_plt;
      const struct elf_backend_data *bed;
      bfd_vma plt_got_pcrel_offset;

      /* When building a static executable, use .iplt, .igot.plt and
         .rela.iplt sections for STT_GNU_IFUNC symbols.  */
      if (htab->elf.splt != NULL)
        {
          plt = htab->elf.splt;
          gotplt = htab->elf.sgotplt;
          relplt = htab->elf.srelplt;
        }
      else
        {
          plt = htab->elf.iplt;
          gotplt = htab->elf.igotplt;
          relplt = htab->elf.irelplt;
        }

      VERIFY_PLT_ENTRY (info, h, plt, gotplt, relplt, local_undefweak)

      /* Get the index in the procedure linkage table which
         corresponds to this symbol.  This is the index of this symbol
         in all the symbols for which we are making plt entries.  The
         first entry in the procedure linkage table is reserved.

         Get the offset into the .got table of the entry that
         corresponds to this function.  Each .got entry is GOT_ENTRY_SIZE
         bytes. The first three are reserved for the dynamic linker.

         For static executables, we don't reserve anything.  */

      if (plt == htab->elf.splt)
        {
          got_offset = (h->plt.offset / htab->plt.plt_entry_size
                        - htab->plt.has_plt0);
          got_offset = (got_offset + 3) * GOT_ENTRY_SIZE;
        }
      else
        {
          got_offset = h->plt.offset / htab->plt.plt_entry_size;
          got_offset = got_offset * GOT_ENTRY_SIZE;
        }

      /* Fill in the entry in the procedure linkage table.  */
      memcpy (plt->contents + h->plt.offset, htab->plt.plt_entry,
              htab->plt.plt_entry_size);
      if (use_plt_second)
        {
          memcpy (htab->plt_second->contents + eh->plt_second.offset,
                  htab->non_lazy_plt->plt_entry,
                  htab->non_lazy_plt->plt_entry_size);

          resolved_plt = htab->plt_second;
          plt_offset = eh->plt_second.offset;
        }
      else
        {
          resolved_plt = plt;
          plt_offset = h->plt.offset;
        }

      /* Insert the relocation positions of the plt section.  */

      /* Put offset the PC-relative instruction referring to the GOT entry,
         subtracting the size of that instruction.  */
      plt_got_pcrel_offset = (gotplt->output_section->vma
                              + gotplt->output_offset
                              + got_offset
                              - resolved_plt->output_section->vma
                              - resolved_plt->output_offset
                              - plt_offset
                              - htab->plt.plt_got_insn_size);

      /* Check PC-relative offset overflow in PLT entry.  */
      if ((plt_got_pcrel_offset + 0x80000000) > 0xffffffff)
        /* xgettext:c-format */
        info->callbacks->einfo (_("%F%pB: PC-relative offset overflow in PLT entry for `%s'\n"),
                                output_bfd, h->root.root.string);

      bfd_put_32 (output_bfd, plt_got_pcrel_offset,
                  (resolved_plt->contents + plt_offset
                   + htab->plt.plt_got_offset));

      /* Fill in the entry in the global offset table, initially this
         points to the second part of the PLT entry.  Leave the entry
         as zero for undefined weak symbol in PIE.  No PLT relocation
         against undefined weak symbol in PIE.  */
      if (!local_undefweak)
        {
          if (htab->plt.has_plt0)
            bfd_put_64 (output_bfd, (plt->output_section->vma
                                     + plt->output_offset
                                     + h->plt.offset
                                     + htab->lazy_plt->plt_lazy_offset),
                        gotplt->contents + got_offset);

          /* Fill in the entry in the .rela.plt section.  */
          rela.r_offset = (gotplt->output_section->vma
                           + gotplt->output_offset
                           + got_offset);
          if (PLT_LOCAL_IFUNC_P (info, h))
            {
              info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
                                      h->root.root.string,
                                      h->root.u.def.section->owner);

              /* If an STT_GNU_IFUNC symbol is locally defined, generate
                 R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT.  */
              rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
              rela.r_addend = (h->root.u.def.value
                               + h->root.u.def.section->output_section->vma
                               + h->root.u.def.section->output_offset);
              /* R_X86_64_IRELATIVE comes last.  */
              plt_index = htab->next_irelative_index--;
            }
          else
            {
              rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
              rela.r_addend = 0;
              plt_index = htab->next_jump_slot_index++;
            }

          /* Don't fill the second and third slots in PLT entry for
             static executables nor without PLT0.  */
          if (plt == htab->elf.splt && htab->plt.has_plt0)
            {
              bfd_vma plt0_offset
                = h->plt.offset + htab->lazy_plt->plt_plt_insn_end;

              /* Put relocation index.  */
              bfd_put_32 (output_bfd, plt_index,
                          (plt->contents + h->plt.offset
                           + htab->lazy_plt->plt_reloc_offset));

              /* Put offset for jmp .PLT0 and check for overflow.  We don't
                 check relocation index for overflow since branch displacement
                 will overflow first.  */
              if (plt0_offset > 0x80000000)
                /* xgettext:c-format */
                info->callbacks->einfo (_("%F%pB: branch displacement overflow in PLT entry for `%s'\n"),
                                        output_bfd, h->root.root.string);
              bfd_put_32 (output_bfd, - plt0_offset,
                          (plt->contents + h->plt.offset
                           + htab->lazy_plt->plt_plt_offset));
            }

          bed = get_elf_backend_data (output_bfd);
          loc = relplt->contents + plt_index * bed->s->sizeof_rela;
          bed->s->swap_reloca_out (output_bfd, &rela, loc);
        }
    }
  else if (eh->plt_got.offset != (bfd_vma) -1)
    {
      bfd_vma got_offset, plt_offset;
      asection *plt, *got;
      bfd_boolean got_after_plt;
      int32_t got_pcrel_offset;

      /* Set the entry in the GOT procedure linkage table.  */
      plt = htab->plt_got;
      got = htab->elf.sgot;
      got_offset = h->got.offset;

      if (got_offset == (bfd_vma) -1
          || (h->type == STT_GNU_IFUNC && h->def_regular)
          || plt == NULL
          || got == NULL)
        abort ();

      /* Use the non-lazy PLT entry template for the GOT PLT since they
         are the identical.  */
      /* Fill in the entry in the GOT procedure linkage table.  */
      plt_offset = eh->plt_got.offset;
      memcpy (plt->contents + plt_offset,
              htab->non_lazy_plt->plt_entry,
              htab->non_lazy_plt->plt_entry_size);

      /* Put offset the PC-relative instruction referring to the GOT
         entry, subtracting the size of that instruction.  */
      got_pcrel_offset = (got->output_section->vma
                          + got->output_offset
                          + got_offset
                          - plt->output_section->vma
                          - plt->output_offset
                          - plt_offset
                          - htab->non_lazy_plt->plt_got_insn_size);

      /* Check PC-relative offset overflow in GOT PLT entry.  */
      got_after_plt = got->output_section->vma > plt->output_section->vma;
      if ((got_after_plt && got_pcrel_offset < 0)
          || (!got_after_plt && got_pcrel_offset > 0))
        /* xgettext:c-format */
        info->callbacks->einfo (_("%F%pB: PC-relative offset overflow in GOT PLT entry for `%s'\n"),
                                output_bfd, h->root.root.string);

      bfd_put_32 (output_bfd, got_pcrel_offset,
                  (plt->contents + plt_offset
                   + htab->non_lazy_plt->plt_got_offset));
    }

  if (!local_undefweak
      && !h->def_regular
      && (h->plt.offset != (bfd_vma) -1
          || eh->plt_got.offset != (bfd_vma) -1))
    {
      /* Mark the symbol as undefined, rather than as defined in
         the .plt section.  Leave the value if there were any
         relocations where pointer equality matters (this is a clue
         for the dynamic linker, to make function pointer
         comparisons work between an application and shared
         library), otherwise set it to zero.  If a function is only
         called from a binary, there is no need to slow down
         shared libraries because of that.  */
      sym->st_shndx = SHN_UNDEF;
      if (!h->pointer_equality_needed)
        sym->st_value = 0;
    }

  /* Don't generate dynamic GOT relocation against undefined weak
     symbol in executable.  */
  if (h->got.offset != (bfd_vma) -1
      && ! GOT_TLS_GD_ANY_P (elf_x86_hash_entry (h)->tls_type)
      && elf_x86_hash_entry (h)->tls_type != GOT_TLS_IE
      && !local_undefweak)
    {
      Elf_Internal_Rela rela;
      asection *relgot = htab->elf.srelgot;

      /* This symbol has an entry in the global offset table.  Set it
         up.  */
      if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
        abort ();

      rela.r_offset = (htab->elf.sgot->output_section->vma
                       + htab->elf.sgot->output_offset
                       + (h->got.offset &~ (bfd_vma) 1));

      /* If this is a static link, or it is a -Bsymbolic link and the
         symbol is defined locally or was forced to be local because
         of a version file, we just want to emit a RELATIVE reloc.
         The entry in the global offset table will already have been
         initialized in the relocate_section function.  */
      if (h->def_regular
          && h->type == STT_GNU_IFUNC)
        {
          if (h->plt.offset == (bfd_vma) -1)
            {
              /* STT_GNU_IFUNC is referenced without PLT.  */
              if (htab->elf.splt == NULL)
                {
                  /* use .rel[a].iplt section to store .got relocations
                     in static executable.  */
                  relgot = htab->elf.irelplt;
                }
              if (SYMBOL_REFERENCES_LOCAL_P (info, h))
                {
                  info->callbacks->minfo (_("Local IFUNC function `%s' in %pB\n"),
                                          h->root.root.string,
                                          h->root.u.def.section->owner);

                  rela.r_info = htab->r_info (0,
                                              R_X86_64_IRELATIVE);
                  rela.r_addend = (h->root.u.def.value
                                   + h->root.u.def.section->output_section->vma
                                   + h->root.u.def.section->output_offset);
                }
              else
                goto do_glob_dat;
            }
          else if (bfd_link_pic (info))
            {
              /* Generate R_X86_64_GLOB_DAT.  */
              goto do_glob_dat;
            }
          else
            {
              asection *plt;
              bfd_vma plt_offset;

              if (!h->pointer_equality_needed)
                abort ();

              /* For non-shared object, we can't use .got.plt, which
                 contains the real function addres if we need pointer
                 equality.  We load the GOT entry with the PLT entry.  */
              if (htab->plt_second != NULL)
                {
                  plt = htab->plt_second;
                  plt_offset = eh->plt_second.offset;
                }
              else
                {
                  plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
                  plt_offset =  h->plt.offset;
                }
              bfd_put_64 (output_bfd, (plt->output_section->vma
                                       + plt->output_offset
                                       + plt_offset),
                          htab->elf.sgot->contents + h->got.offset);
              return TRUE;
            }
        }
      else if (bfd_link_pic (info)
               && SYMBOL_REFERENCES_LOCAL_P (info, h))
        {
          if (!(h->def_regular || ELF_COMMON_DEF_P (h)))
            return FALSE;
          BFD_ASSERT((h->got.offset & 1) != 0);
          rela.r_info = htab->r_info (0, R_X86_64_RELATIVE);
          rela.r_addend = (h->root.u.def.value
                           + h->root.u.def.section->output_section->vma
                           + h->root.u.def.section->output_offset);
        }
      else
        {
          BFD_ASSERT((h->got.offset & 1) == 0);
do_glob_dat:
          bfd_put_64 (output_bfd, (bfd_vma) 0,
                      htab->elf.sgot->contents + h->got.offset);
          rela.r_info = htab->r_info (h->dynindx, R_X86_64_GLOB_DAT);
          rela.r_addend = 0;
        }

      elf_append_rela (output_bfd, relgot, &rela);
    }

  if (h->needs_copy)
    {
      Elf_Internal_Rela rela;
      asection *s;

      /* This symbol needs a copy reloc.  Set it up.  */
      VERIFY_COPY_RELOC (h, htab)

      rela.r_offset = (h->root.u.def.value
                       + h->root.u.def.section->output_section->vma
                       + h->root.u.def.section->output_offset);
      rela.r_info = htab->r_info (h->dynindx, R_X86_64_COPY);
      rela.r_addend = 0;
      if (h->root.u.def.section == htab->elf.sdynrelro)
        s = htab->elf.sreldynrelro;
      else
        s = htab->elf.srelbss;
      elf_append_rela (output_bfd, s, &rela);
    }

  return TRUE;
}

/* Finish up local dynamic symbol handling.  We set the contents of
   various dynamic sections here.  */

static bfd_boolean
elf_x86_64_finish_local_dynamic_symbol (void **slot, void *inf)
{
  struct elf_link_hash_entry *h
    = (struct elf_link_hash_entry *) *slot;
  struct bfd_link_info *info
    = (struct bfd_link_info *) inf;

  return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
                                           info, h, NULL);
}

/* Finish up undefined weak symbol handling in PIE.  Fill its PLT entry
   here since undefined weak symbol may not be dynamic and may not be
   called for elf_x86_64_finish_dynamic_symbol.  */

static bfd_boolean
elf_x86_64_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
                                        void *inf)
{
  struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
  struct bfd_link_info *info = (struct bfd_link_info *) inf;

  if (h->root.type != bfd_link_hash_undefweak
      || h->dynindx != -1)
    return TRUE;

  return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
                                           info, h, NULL);
}

/* Used to decide how to sort relocs in an optimal manner for the
   dynamic linker, before writing them out.  */

static enum elf_reloc_type_class
elf_x86_64_reloc_type_class (const struct bfd_link_info *info,
                             const asection *rel_sec ATTRIBUTE_UNUSED,
                             const Elf_Internal_Rela *rela)
{
  bfd *abfd = info->output_bfd;
  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
  struct elf_x86_link_hash_table *htab
    = elf_x86_hash_table (info, X86_64_ELF_DATA);

  if (htab->elf.dynsym != NULL
      && htab->elf.dynsym->contents != NULL)
    {
      /* Check relocation against STT_GNU_IFUNC symbol if there are
         dynamic symbols.  */
      unsigned long r_symndx = htab->r_sym (rela->r_info);
      if (r_symndx != STN_UNDEF)
        {
          Elf_Internal_Sym sym;
          if (!bed->s->swap_symbol_in (abfd,
                                       (htab->elf.dynsym->contents
                                        + r_symndx * bed->s->sizeof_sym),
                                       0, &sym))
            abort ();

          if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC)
            return reloc_class_ifunc;
        }
    }

  switch ((int) ELF32_R_TYPE (rela->r_info))
    {
    case R_X86_64_IRELATIVE:
      return reloc_class_ifunc;
    case R_X86_64_RELATIVE:
    case R_X86_64_RELATIVE64:
      return reloc_class_relative;
    case R_X86_64_JUMP_SLOT:
      return reloc_class_plt;
    case R_X86_64_COPY:
      return reloc_class_copy;
    default:
      return reloc_class_normal;
    }
}

/* Finish up the dynamic sections.  */

static bfd_boolean
elf_x86_64_finish_dynamic_sections (bfd *output_bfd,
                                    struct bfd_link_info *info)
{
  struct elf_x86_link_hash_table *htab;

  htab = _bfd_x86_elf_finish_dynamic_sections (output_bfd, info);
  if (htab == NULL)
    return FALSE;

  if (! htab->elf.dynamic_sections_created)
    return TRUE;

  if (htab->elf.splt && htab->elf.splt->size > 0)
    {
      elf_section_data (htab->elf.splt->output_section)
        ->this_hdr.sh_entsize = htab->plt.plt_entry_size;

      if (htab->plt.has_plt0)
        {
          /* Fill in the special first entry in the procedure linkage
             table.  */
          memcpy (htab->elf.splt->contents,
                  htab->lazy_plt->plt0_entry,
                  htab->lazy_plt->plt0_entry_size);
          /* Add offset for pushq GOT+8(%rip), since the instruction
             uses 6 bytes subtract this value.  */
          bfd_put_32 (output_bfd,
                      (htab->elf.sgotplt->output_section->vma
                       + htab->elf.sgotplt->output_offset
                       + 8
                       - htab->elf.splt->output_section->vma
                       - htab->elf.splt->output_offset
                       - 6),
                      (htab->elf.splt->contents
                       + htab->lazy_plt->plt0_got1_offset));
          /* Add offset for the PC-relative instruction accessing
             GOT+16, subtracting the offset to the end of that
             instruction.  */
          bfd_put_32 (output_bfd,
                      (htab->elf.sgotplt->output_section->vma
                       + htab->elf.sgotplt->output_offset
                       + 16
                       - htab->elf.splt->output_section->vma
                       - htab->elf.splt->output_offset
                       - htab->lazy_plt->plt0_got2_insn_end),
                      (htab->elf.splt->contents
                       + htab->lazy_plt->plt0_got2_offset));
        }

      if (htab->tlsdesc_plt)
        {
          bfd_put_64 (output_bfd, (bfd_vma) 0,
                      htab->elf.sgot->contents + htab->tlsdesc_got);

          memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
                  htab->lazy_plt->plt0_entry,
                  htab->lazy_plt->plt0_entry_size);

          /* Add offset for pushq GOT+8(%rip), since the
             instruction uses 6 bytes subtract this value.  */
          bfd_put_32 (output_bfd,
                      (htab->elf.sgotplt->output_section->vma
                       + htab->elf.sgotplt->output_offset
                       + 8
                       - htab->elf.splt->output_section->vma
                       - htab->elf.splt->output_offset
                       - htab->tlsdesc_plt
                       - 6),
                      (htab->elf.splt->contents
                       + htab->tlsdesc_plt
                       + htab->lazy_plt->plt0_got1_offset));
          /* Add offset for the PC-relative instruction accessing
             GOT+TDG, where TDG stands for htab->tlsdesc_got,
             subtracting the offset to the end of that
             instruction.  */
          bfd_put_32 (output_bfd,
                      (htab->elf.sgot->output_section->vma
                       + htab->elf.sgot->output_offset
                       + htab->tlsdesc_got
                       - htab->elf.splt->output_section->vma
                       - htab->elf.splt->output_offset
                       - htab->tlsdesc_plt
                       - htab->lazy_plt->plt0_got2_insn_end),
                      (htab->elf.splt->contents
                       + htab->tlsdesc_plt
                       + htab->lazy_plt->plt0_got2_offset));
        }
    }

  /* Fill PLT entries for undefined weak symbols in PIE.  */
  if (bfd_link_pie (info))
    bfd_hash_traverse (&info->hash->table,
                       elf_x86_64_pie_finish_undefweak_symbol,
                       info);

  return TRUE;
}

/* Fill PLT/GOT entries and allocate dynamic relocations for local
   STT_GNU_IFUNC symbols, which aren't in the ELF linker hash table.
   It has to be done before elf_link_sort_relocs is called so that
   dynamic relocations are properly sorted.  */

static bfd_boolean
elf_x86_64_output_arch_local_syms
  (bfd *output_bfd ATTRIBUTE_UNUSED,
   struct bfd_link_info *info,
   void *flaginfo ATTRIBUTE_UNUSED,
   int (*func) (void *, const char *,
                Elf_Internal_Sym *,
                asection *,
                struct elf_link_hash_entry *) ATTRIBUTE_UNUSED)
{
  struct elf_x86_link_hash_table *htab
    = elf_x86_hash_table (info, X86_64_ELF_DATA);
  if (htab == NULL)
    return FALSE;

  /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols.  */
  htab_traverse (htab->loc_hash_table,
                 elf_x86_64_finish_local_dynamic_symbol,
                 info);

  return TRUE;
}

/* Forward declaration.  */
static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt;

/* Similar to _bfd_elf_get_synthetic_symtab.  Support PLTs with all
   dynamic relocations.   */

static long
elf_x86_64_get_synthetic_symtab (bfd *abfd,
                                 long symcount ATTRIBUTE_UNUSED,
                                 asymbol **syms ATTRIBUTE_UNUSED,
                                 long dynsymcount,
                                 asymbol **dynsyms,
                                 asymbol **ret)
{
  long count, i, n;
  int j;
  bfd_byte *plt_contents;
  long relsize;
  const struct elf_x86_lazy_plt_layout *lazy_plt;
  const struct elf_x86_non_lazy_plt_layout *non_lazy_plt;
  const struct elf_x86_lazy_plt_layout *lazy_bnd_plt;
  const struct elf_x86_non_lazy_plt_layout *non_lazy_bnd_plt;
  const struct elf_x86_lazy_plt_layout *lazy_ibt_plt;
  const struct elf_x86_non_lazy_plt_layout *non_lazy_ibt_plt;
  asection *plt;
  enum elf_x86_plt_type plt_type;
  struct elf_x86_plt plts[] =
    {
      { ".plt", NULL, NULL, plt_unknown, 0, 0, 0, 0 },
      { ".plt.got", NULL, NULL, plt_non_lazy, 0, 0, 0, 0 },
      { ".plt.sec", NULL, NULL, plt_second, 0, 0, 0, 0 },
      { ".plt.bnd", NULL, NULL, plt_second, 0, 0, 0, 0 },
      { NULL, NULL, NULL, plt_non_lazy, 0, 0, 0, 0 }
    };

  *ret = NULL;

  if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
    return 0;

  if (dynsymcount <= 0)
    return 0;

  relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
  if (relsize <= 0)
    return -1;

  if (get_elf_x86_backend_data (abfd)->target_os != is_nacl)
    {
      lazy_plt = &elf_x86_64_lazy_plt;
      non_lazy_plt = &elf_x86_64_non_lazy_plt;
      lazy_bnd_plt = &elf_x86_64_lazy_bnd_plt;
      non_lazy_bnd_plt = &elf_x86_64_non_lazy_bnd_plt;
      if (ABI_64_P (abfd))
        {
          lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
          non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
        }
      else
        {
          lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
          non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
        }
    }
  else
    {
      lazy_plt = &elf_x86_64_nacl_plt;
      non_lazy_plt = NULL;
      lazy_bnd_plt = NULL;
      non_lazy_bnd_plt = NULL;
      lazy_ibt_plt = NULL;
      non_lazy_ibt_plt = NULL;
    }

  count = 0;
  for (j = 0; plts[j].name != NULL; j++)
    {
      plt = bfd_get_section_by_name (abfd, plts[j].name);
      if (plt == NULL || plt->size == 0)
        continue;

      /* Get the PLT section contents.  */
      plt_contents = (bfd_byte *) bfd_malloc (plt->size);
      if (plt_contents == NULL)
        break;
      if (!bfd_get_section_contents (abfd, (asection *) plt,
                                     plt_contents, 0, plt->size))
        {
          free (plt_contents);
          break;
        }

      /* Check what kind of PLT it is.  */
      plt_type = plt_unknown;
      if (plts[j].type == plt_unknown
          && (plt->size >= (lazy_plt->plt_entry_size
                            + lazy_plt->plt_entry_size)))
        {
          /* Match lazy PLT first.  Need to check the first two
             instructions.   */
          if ((memcmp (plt_contents, lazy_plt->plt0_entry,
                       lazy_plt->plt0_got1_offset) == 0)
              && (memcmp (plt_contents + 6, lazy_plt->plt0_entry + 6,
                          2) == 0))
            plt_type = plt_lazy;
          else if (lazy_bnd_plt != NULL
                   && (memcmp (plt_contents, lazy_bnd_plt->plt0_entry,
                               lazy_bnd_plt->plt0_got1_offset) == 0)
                   && (memcmp (plt_contents + 6,
                               lazy_bnd_plt->plt0_entry + 6, 3) == 0))
            {
              plt_type = plt_lazy | plt_second;
              /* The fist entry in the lazy IBT PLT is the same as the
                 lazy BND PLT.  */
              if ((memcmp (plt_contents + lazy_ibt_plt->plt_entry_size,
                           lazy_ibt_plt->plt_entry,
                           lazy_ibt_plt->plt_got_offset) == 0))
                lazy_plt = lazy_ibt_plt;
              else
                lazy_plt = lazy_bnd_plt;
            }
        }

      if (non_lazy_plt != NULL
          && (plt_type == plt_unknown || plt_type == plt_non_lazy)
          && plt->size >= non_lazy_plt->plt_entry_size)
        {
          /* Match non-lazy PLT.  */
          if (memcmp (plt_contents, non_lazy_plt->plt_entry,
                      non_lazy_plt->plt_got_offset) == 0)
            plt_type = plt_non_lazy;
        }

      if (plt_type == plt_unknown || plt_type == plt_second)
        {
          if (non_lazy_bnd_plt != NULL
              && plt->size >= non_lazy_bnd_plt->plt_entry_size
              && (memcmp (plt_contents, non_lazy_bnd_plt->plt_entry,
                          non_lazy_bnd_plt->plt_got_offset) == 0))
            {
              /* Match BND PLT.  */
              plt_type = plt_second;
              non_lazy_plt = non_lazy_bnd_plt;
            }
          else if (non_lazy_ibt_plt != NULL
                   && plt->size >= non_lazy_ibt_plt->plt_entry_size
                   && (memcmp (plt_contents,
                               non_lazy_ibt_plt->plt_entry,
                               non_lazy_ibt_plt->plt_got_offset) == 0))
            {
              /* Match IBT PLT.  */
              plt_type = plt_second;
              non_lazy_plt = non_lazy_ibt_plt;
            }
        }

      if (plt_type == plt_unknown)
        {
          free (plt_contents);
          continue;
        }

      plts[j].sec = plt;
      plts[j].type = plt_type;

      if ((plt_type & plt_lazy))
        {
          plts[j].plt_got_offset = lazy_plt->plt_got_offset;
          plts[j].plt_got_insn_size = lazy_plt->plt_got_insn_size;
          plts[j].plt_entry_size = lazy_plt->plt_entry_size;
          /* Skip PLT0 in lazy PLT.  */
          i = 1;
        }
      else
        {
          plts[j].plt_got_offset = non_lazy_plt->plt_got_offset;
          plts[j].plt_got_insn_size = non_lazy_plt->plt_got_insn_size;
          plts[j].plt_entry_size = non_lazy_plt->plt_entry_size;
          i = 0;
        }

      /* Skip lazy PLT when the second PLT is used.  */
      if (plt_type == (plt_lazy | plt_second))
        plts[j].count = 0;
      else
        {
          n = plt->size / plts[j].plt_entry_size;
          plts[j].count = n;
          count += n - i;
        }

      plts[j].contents = plt_contents;
    }

  return _bfd_x86_elf_get_synthetic_symtab (abfd, count, relsize,
                                            (bfd_vma) 0, plts, dynsyms,
                                            ret);
}

/* Handle an x86-64 specific section when reading an object file.  This
   is called when elfcode.h finds a section with an unknown type.  */

static bfd_boolean
elf_x86_64_section_from_shdr (bfd *abfd, Elf_Internal_Shdr *hdr,
                              const char *name, int shindex)
{
  if (hdr->sh_type != SHT_X86_64_UNWIND)
    return FALSE;

  if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
    return FALSE;

  return TRUE;
}

/* Hook called by the linker routine which adds symbols from an object
   file.  We use it to put SHN_X86_64_LCOMMON items in .lbss, instead
   of .bss.  */

static bfd_boolean
elf_x86_64_add_symbol_hook (bfd *abfd,
                            struct bfd_link_info *info ATTRIBUTE_UNUSED,
                            Elf_Internal_Sym *sym,
                            const char **namep ATTRIBUTE_UNUSED,
                            flagword *flagsp ATTRIBUTE_UNUSED,
                            asection **secp,
                            bfd_vma *valp)
{
  asection *lcomm;

  switch (sym->st_shndx)
    {
    case SHN_X86_64_LCOMMON:
      lcomm = bfd_get_section_by_name (abfd, "LARGE_COMMON");
      if (lcomm == NULL)
        {
          lcomm = bfd_make_section_with_flags (abfd,
                                               "LARGE_COMMON",
                                               (SEC_ALLOC
                                                | SEC_IS_COMMON
                                                | SEC_LINKER_CREATED));
          if (lcomm == NULL)
            return FALSE;
          elf_section_flags (lcomm) |= SHF_X86_64_LARGE;
        }
      *secp = lcomm;
      *valp = sym->st_size;
      return TRUE;
    }

  return TRUE;
}


/* Given a BFD section, try to locate the corresponding ELF section
   index.  */

static bfd_boolean
elf_x86_64_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
                                         asection *sec, int *index_return)
{
  if (sec == &_bfd_elf_large_com_section)
    {
      *index_return = SHN_X86_64_LCOMMON;
      return TRUE;
    }
  return FALSE;
}

/* Process a symbol.  */

static void
elf_x86_64_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
                              asymbol *asym)
{
  elf_symbol_type *elfsym = (elf_symbol_type *) asym;

  switch (elfsym->internal_elf_sym.st_shndx)
    {
    case SHN_X86_64_LCOMMON:
      asym->section = &_bfd_elf_large_com_section;
      asym->value = elfsym->internal_elf_sym.st_size;
      /* Common symbol doesn't set BSF_GLOBAL.  */
      asym->flags &= ~BSF_GLOBAL;
      break;
    }
}

static bfd_boolean
elf_x86_64_common_definition (Elf_Internal_Sym *sym)
{
  return (sym->st_shndx == SHN_COMMON
          || sym->st_shndx == SHN_X86_64_LCOMMON);
}

static unsigned int
elf_x86_64_common_section_index (asection *sec)
{
  if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
    return SHN_COMMON;
  else
    return SHN_X86_64_LCOMMON;
}

static asection *
elf_x86_64_common_section (asection *sec)
{
  if ((elf_section_flags (sec) & SHF_X86_64_LARGE) == 0)
    return bfd_com_section_ptr;
  else
    return &_bfd_elf_large_com_section;
}

static bfd_boolean
elf_x86_64_merge_symbol (struct elf_link_hash_entry *h,
                         const Elf_Internal_Sym *sym,
                         asection **psec,
                         bfd_boolean newdef,
                         bfd_boolean olddef,
                         bfd *oldbfd,
                         const asection *oldsec)
{
  /* A normal common symbol and a large common symbol result in a
     normal common symbol.  We turn the large common symbol into a
     normal one.  */
  if (!olddef
      && h->root.type == bfd_link_hash_common
      && !newdef
      && bfd_is_com_section (*psec)
      && oldsec != *psec)
    {
      if (sym->st_shndx == SHN_COMMON
          && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) != 0)
        {
          h->root.u.c.p->section
            = bfd_make_section_old_way (oldbfd, "COMMON");
          h->root.u.c.p->section->flags = SEC_ALLOC;
        }
      else if (sym->st_shndx == SHN_X86_64_LCOMMON
               && (elf_section_flags (oldsec) & SHF_X86_64_LARGE) == 0)
        *psec = bfd_com_section_ptr;
    }

  return TRUE;
}

static int
elf_x86_64_additional_program_headers (bfd *abfd,
                                       struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
  asection *s;
  int count = 0;

  /* Check to see if we need a large readonly segment.  */
  s = bfd_get_section_by_name (abfd, ".lrodata");
  if (s && (s->flags & SEC_LOAD))
    count++;

  /* Check to see if we need a large data segment.  Since .lbss sections
     is placed right after the .bss section, there should be no need for
     a large data segment just because of .lbss.  */
  s = bfd_get_section_by_name (abfd, ".ldata");
  if (s && (s->flags & SEC_LOAD))
    count++;

  return count;
}

/* Return TRUE iff relocations for INPUT are compatible with OUTPUT. */

static bfd_boolean
elf_x86_64_relocs_compatible (const bfd_target *input,
                              const bfd_target *output)
{
  return ((xvec_get_elf_backend_data (input)->s->elfclass
           == xvec_get_elf_backend_data (output)->s->elfclass)
          && _bfd_elf_relocs_compatible (input, output));
}

/* Set up x86-64 GNU properties.  Return the first relocatable ELF input
   with GNU properties if found.  Otherwise, return NULL.  */

static bfd *
elf_x86_64_link_setup_gnu_properties (struct bfd_link_info *info)
{
  struct elf_x86_init_table init_table;

  if ((int) R_X86_64_standard >= (int) R_X86_64_converted_reloc_bit
      || (int) R_X86_64_max <= (int) R_X86_64_converted_reloc_bit
      || ((int) (R_X86_64_GNU_VTINHERIT | R_X86_64_converted_reloc_bit)
          != (int) R_X86_64_GNU_VTINHERIT)
      || ((int) (R_X86_64_GNU_VTENTRY | R_X86_64_converted_reloc_bit)
          != (int) R_X86_64_GNU_VTENTRY))
    abort ();

  /* This is unused for x86-64.  */
  init_table.plt0_pad_byte = 0x90;

  if (get_elf_x86_backend_data (info->output_bfd)->target_os != is_nacl)
    {
      if (info->bndplt)
        {
          init_table.lazy_plt = &elf_x86_64_lazy_bnd_plt;
          init_table.non_lazy_plt = &elf_x86_64_non_lazy_bnd_plt;
        }
      else
        {
          init_table.lazy_plt = &elf_x86_64_lazy_plt;
          init_table.non_lazy_plt = &elf_x86_64_non_lazy_plt;
        }

      if (ABI_64_P (info->output_bfd))
        {
          init_table.lazy_ibt_plt = &elf_x86_64_lazy_ibt_plt;
          init_table.non_lazy_ibt_plt = &elf_x86_64_non_lazy_ibt_plt;
        }
      else
        {
          init_table.lazy_ibt_plt = &elf_x32_lazy_ibt_plt;
          init_table.non_lazy_ibt_plt = &elf_x32_non_lazy_ibt_plt;
        }
    }
  else
    {
      init_table.lazy_plt = &elf_x86_64_nacl_plt;
      init_table.non_lazy_plt = NULL;
      init_table.lazy_ibt_plt = NULL;
      init_table.non_lazy_ibt_plt = NULL;
    }

  if (ABI_64_P (info->output_bfd))
    {
      init_table.r_info = elf64_r_info;
      init_table.r_sym = elf64_r_sym;
    }
  else
    {
      init_table.r_info = elf32_r_info;
      init_table.r_sym = elf32_r_sym;
    }

  return _bfd_x86_elf_link_setup_gnu_properties (info, &init_table);
}

static const struct bfd_elf_special_section
elf_x86_64_special_sections[]=
{
  { STRING_COMMA_LEN (".gnu.linkonce.lb"), -2, SHT_NOBITS,   SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
  { STRING_COMMA_LEN (".gnu.linkonce.lr"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
  { STRING_COMMA_LEN (".gnu.linkonce.lt"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR + SHF_X86_64_LARGE},
  { STRING_COMMA_LEN (".lbss"),            -2, SHT_NOBITS,   SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
  { STRING_COMMA_LEN (".ldata"),           -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_X86_64_LARGE},
  { STRING_COMMA_LEN (".lrodata"),         -2, SHT_PROGBITS, SHF_ALLOC + SHF_X86_64_LARGE},
  { NULL,                       0,          0, 0,            0 }
};

#define TARGET_LITTLE_SYM                   x86_64_elf64_vec
#define TARGET_LITTLE_NAME                  "elf64-x86-64"
#define ELF_ARCH                            bfd_arch_i386
#define ELF_TARGET_ID                       X86_64_ELF_DATA
#define ELF_MACHINE_CODE                    EM_X86_64
#define ELF_MAXPAGESIZE                     0x200000
#define ELF_MINPAGESIZE                     0x1000
#define ELF_COMMONPAGESIZE                  0x1000

#define elf_backend_can_gc_sections         1
#define elf_backend_can_refcount            1
#define elf_backend_want_got_plt            1
#define elf_backend_plt_readonly            1
#define elf_backend_want_plt_sym            0
#define elf_backend_got_header_size         (GOT_ENTRY_SIZE*3)
#define elf_backend_rela_normal             1
#define elf_backend_plt_alignment           4
#define elf_backend_extern_protected_data   1
#define elf_backend_caches_rawsize          1
#define elf_backend_dtrel_excludes_plt      1
#define elf_backend_want_dynrelro           1

#define elf_info_to_howto                   elf_x86_64_info_to_howto

#define bfd_elf64_bfd_reloc_type_lookup     elf_x86_64_reloc_type_lookup
#define bfd_elf64_bfd_reloc_name_lookup \
  elf_x86_64_reloc_name_lookup

#define elf_backend_relocs_compatible       elf_x86_64_relocs_compatible
#define elf_backend_check_relocs            elf_x86_64_check_relocs
#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
#define elf_backend_finish_dynamic_sections elf_x86_64_finish_dynamic_sections
#define elf_backend_finish_dynamic_symbol   elf_x86_64_finish_dynamic_symbol
#define elf_backend_output_arch_local_syms  elf_x86_64_output_arch_local_syms
#define elf_backend_grok_prstatus           elf_x86_64_grok_prstatus
#define elf_backend_grok_psinfo             elf_x86_64_grok_psinfo
#ifdef CORE_HEADER
#define elf_backend_write_core_note         elf_x86_64_write_core_note
#endif
#define elf_backend_reloc_type_class        elf_x86_64_reloc_type_class
#define elf_backend_relocate_section        elf_x86_64_relocate_section
#define elf_backend_init_index_section      _bfd_elf_init_1_index_section
#define elf_backend_object_p                elf64_x86_64_elf_object_p
#define bfd_elf64_get_synthetic_symtab      elf_x86_64_get_synthetic_symtab

#define elf_backend_section_from_shdr \
        elf_x86_64_section_from_shdr

#define elf_backend_section_from_bfd_section \
  elf_x86_64_elf_section_from_bfd_section
#define elf_backend_add_symbol_hook \
  elf_x86_64_add_symbol_hook
#define elf_backend_symbol_processing \
  elf_x86_64_symbol_processing
#define elf_backend_common_section_index \
  elf_x86_64_common_section_index
#define elf_backend_common_section \
  elf_x86_64_common_section
#define elf_backend_common_definition \
  elf_x86_64_common_definition
#define elf_backend_merge_symbol \
  elf_x86_64_merge_symbol
#define elf_backend_special_sections \
  elf_x86_64_special_sections
#define elf_backend_additional_program_headers \
  elf_x86_64_additional_program_headers
#define elf_backend_setup_gnu_properties \
  elf_x86_64_link_setup_gnu_properties
#define elf_backend_hide_symbol \
  _bfd_x86_elf_hide_symbol

#include "elf64-target.h"

/* CloudABI support.  */

#undef  TARGET_LITTLE_SYM
#define TARGET_LITTLE_SYM                   x86_64_elf64_cloudabi_vec
#undef  TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME                  "elf64-x86-64-cloudabi"

#undef  ELF_OSABI
#define ELF_OSABI                           ELFOSABI_CLOUDABI

#undef  elf64_bed
#define elf64_bed elf64_x86_64_cloudabi_bed

#include "elf64-target.h"

/* FreeBSD support.  */

#undef  TARGET_LITTLE_SYM
#define TARGET_LITTLE_SYM                   x86_64_elf64_fbsd_vec
#undef  TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME                  "elf64-x86-64-freebsd"

#undef  ELF_OSABI
#define ELF_OSABI                           ELFOSABI_FREEBSD

#undef  elf64_bed
#define elf64_bed elf64_x86_64_fbsd_bed

#include "elf64-target.h"

/* Solaris 2 support.  */

#undef  TARGET_LITTLE_SYM
#define TARGET_LITTLE_SYM                   x86_64_elf64_sol2_vec
#undef  TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME                  "elf64-x86-64-sol2"

static const struct elf_x86_backend_data elf_x86_64_solaris_arch_bed =
  {
    is_solaris                              /* os */
  };

#undef  elf_backend_arch_data
#define elf_backend_arch_data               &elf_x86_64_solaris_arch_bed

/* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
   objects won't be recognized.  */
#undef ELF_OSABI

#undef  elf64_bed
#define elf64_bed                           elf64_x86_64_sol2_bed

/* The 64-bit static TLS arena size is rounded to the nearest 16-byte
   boundary.  */
#undef  elf_backend_static_tls_alignment
#define elf_backend_static_tls_alignment    16

/* The Solaris 2 ABI requires a plt symbol on all platforms.

   Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
   File, p.63.  */
#undef  elf_backend_want_plt_sym
#define elf_backend_want_plt_sym            1

#undef  elf_backend_strtab_flags
#define elf_backend_strtab_flags        SHF_STRINGS

static bfd_boolean
elf64_x86_64_copy_solaris_special_section_fields (const bfd *ibfd ATTRIBUTE_UNUSED,
                                                  bfd *obfd ATTRIBUTE_UNUSED,
                                                  const Elf_Internal_Shdr *isection ATTRIBUTE_UNUSED,
                                                  Elf_Internal_Shdr *osection ATTRIBUTE_UNUSED)
{
  /* PR 19938: FIXME: Need to add code for setting the sh_info
     and sh_link fields of Solaris specific section types.  */
  return FALSE;
}

#undef  elf_backend_copy_special_section_fields
#define elf_backend_copy_special_section_fields elf64_x86_64_copy_solaris_special_section_fields

#include "elf64-target.h"

/* Native Client support.  */

static bfd_boolean
elf64_x86_64_nacl_elf_object_p (bfd *abfd)
{
  /* Set the right machine number for a NaCl x86-64 ELF64 file.  */
  bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64_nacl);
  return TRUE;
}

#undef  TARGET_LITTLE_SYM
#define TARGET_LITTLE_SYM               x86_64_elf64_nacl_vec
#undef  TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME              "elf64-x86-64-nacl"
#undef  elf64_bed
#define elf64_bed                       elf64_x86_64_nacl_bed

#undef  ELF_MAXPAGESIZE
#undef  ELF_MINPAGESIZE
#undef  ELF_COMMONPAGESIZE
#define ELF_MAXPAGESIZE                 0x10000
#define ELF_MINPAGESIZE                 0x10000
#define ELF_COMMONPAGESIZE              0x10000

/* Restore defaults.  */
#undef  ELF_OSABI
#undef  elf_backend_static_tls_alignment
#undef  elf_backend_want_plt_sym
#define elf_backend_want_plt_sym        0
#undef  elf_backend_strtab_flags
#undef  elf_backend_copy_special_section_fields

/* NaCl uses substantially different PLT entries for the same effects.  */

#undef  elf_backend_plt_alignment
#define elf_backend_plt_alignment       5
#define NACL_PLT_ENTRY_SIZE             64
#define NACLMASK                        0xe0 /* 32-byte alignment mask.  */

static const bfd_byte elf_x86_64_nacl_plt0_entry[NACL_PLT_ENTRY_SIZE] =
  {
    0xff, 0x35, 8, 0, 0, 0,             /* pushq GOT+8(%rip)            */
    0x4c, 0x8b, 0x1d, 16, 0, 0, 0,      /* mov GOT+16(%rip), %r11       */
    0x41, 0x83, 0xe3, NACLMASK,         /* and $-32, %r11d              */
    0x4d, 0x01, 0xfb,                   /* add %r15, %r11               */
    0x41, 0xff, 0xe3,                   /* jmpq *%r11                   */

    /* 9-byte nop sequence to pad out to the next 32-byte boundary.  */
    0x66, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw 0x0(%rax,%rax,1)     */

    /* 32 bytes of nop to pad out to the standard size.  */
    0x66, 0x66, 0x66, 0x66, 0x66, 0x66,    /* excess data16 prefixes    */
    0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
    0x66, 0x66, 0x66, 0x66, 0x66, 0x66,    /* excess data16 prefixes    */
    0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
    0x66,                                  /* excess data16 prefix      */
    0x90                                   /* nop */
  };

static const bfd_byte elf_x86_64_nacl_plt_entry[NACL_PLT_ENTRY_SIZE] =
  {
    0x4c, 0x8b, 0x1d, 0, 0, 0, 0,       /* mov name@GOTPCREL(%rip),%r11 */
    0x41, 0x83, 0xe3, NACLMASK,         /* and $-32, %r11d              */
    0x4d, 0x01, 0xfb,                   /* add %r15, %r11               */
    0x41, 0xff, 0xe3,                   /* jmpq *%r11                   */

    /* 15-byte nop sequence to pad out to the next 32-byte boundary.  */
    0x66, 0x66, 0x66, 0x66, 0x66, 0x66,    /* excess data16 prefixes    */
    0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */

    /* Lazy GOT entries point here (32-byte aligned).  */
    0x68,                 /* pushq immediate */
    0, 0, 0, 0,           /* replaced with index into relocation table.  */
    0xe9,                 /* jmp relative */
    0, 0, 0, 0,           /* replaced with offset to start of .plt0.  */

    /* 22 bytes of nop to pad out to the standard size.  */
    0x66, 0x66, 0x66, 0x66, 0x66, 0x66,    /* excess data16 prefixes    */
    0x2e, 0x0f, 0x1f, 0x84, 0, 0, 0, 0, 0, /* nopw %cs:0x0(%rax,%rax,1) */
    0x0f, 0x1f, 0x80, 0, 0, 0, 0,          /* nopl 0x0(%rax)            */
  };

/* .eh_frame covering the .plt section.  */

static const bfd_byte elf_x86_64_nacl_eh_frame_plt[] =
  {
#if (PLT_CIE_LENGTH != 20                               \
     || PLT_FDE_LENGTH != 36                            \
     || PLT_FDE_START_OFFSET != 4 + PLT_CIE_LENGTH + 8  \
     || PLT_FDE_LEN_OFFSET != 4 + PLT_CIE_LENGTH + 12)
# error "Need elf_x86_backend_data parameters for eh_frame_plt offsets!"
#endif
    PLT_CIE_LENGTH, 0, 0, 0,    /* CIE length */
    0, 0, 0, 0,                 /* CIE ID */
    1,                          /* CIE version */
    'z', 'R', 0,                /* Augmentation string */
    1,                          /* Code alignment factor */
    0x78,                       /* Data alignment factor */
    16,                         /* Return address column */
    1,                          /* Augmentation size */
    DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding */
    DW_CFA_def_cfa, 7, 8,       /* DW_CFA_def_cfa: r7 (rsp) ofs 8 */
    DW_CFA_offset + 16, 1,      /* DW_CFA_offset: r16 (rip) at cfa-8 */
    DW_CFA_nop, DW_CFA_nop,

    PLT_FDE_LENGTH, 0, 0, 0,    /* FDE length */
    PLT_CIE_LENGTH + 8, 0, 0, 0,/* CIE pointer */
    0, 0, 0, 0,                 /* R_X86_64_PC32 .plt goes here */
    0, 0, 0, 0,                 /* .plt size goes here */
    0,                          /* Augmentation size */
    DW_CFA_def_cfa_offset, 16,  /* DW_CFA_def_cfa_offset: 16 */
    DW_CFA_advance_loc + 6,     /* DW_CFA_advance_loc: 6 to __PLT__+6 */
    DW_CFA_def_cfa_offset, 24,  /* DW_CFA_def_cfa_offset: 24 */
    DW_CFA_advance_loc + 58,    /* DW_CFA_advance_loc: 58 to __PLT__+64 */
    DW_CFA_def_cfa_expression,  /* DW_CFA_def_cfa_expression */
    13,                         /* Block length */
    DW_OP_breg7, 8,             /* DW_OP_breg7 (rsp): 8 */
    DW_OP_breg16, 0,            /* DW_OP_breg16 (rip): 0 */
    DW_OP_const1u, 63, DW_OP_and, DW_OP_const1u, 37, DW_OP_ge,
    DW_OP_lit3, DW_OP_shl, DW_OP_plus,
    DW_CFA_nop, DW_CFA_nop
  };

static const struct elf_x86_lazy_plt_layout elf_x86_64_nacl_plt =
  {
    elf_x86_64_nacl_plt0_entry,              /* plt0_entry */
    NACL_PLT_ENTRY_SIZE,                     /* plt0_entry_size */
    elf_x86_64_nacl_plt_entry,               /* plt_entry */
    NACL_PLT_ENTRY_SIZE,                     /* plt_entry_size */
    2,                                       /* plt0_got1_offset */
    9,                                       /* plt0_got2_offset */
    13,                                      /* plt0_got2_insn_end */
    3,                                       /* plt_got_offset */
    33,                                      /* plt_reloc_offset */
    38,                                      /* plt_plt_offset */
    7,                                       /* plt_got_insn_size */
    42,                                      /* plt_plt_insn_end */
    32,                                      /* plt_lazy_offset */
    elf_x86_64_nacl_plt0_entry,              /* pic_plt0_entry */
    elf_x86_64_nacl_plt_entry,               /* pic_plt_entry */
    elf_x86_64_nacl_eh_frame_plt,            /* eh_frame_plt */
    sizeof (elf_x86_64_nacl_eh_frame_plt)    /* eh_frame_plt_size */
  };

static const struct elf_x86_backend_data elf_x86_64_nacl_arch_bed =
  {
    is_nacl                                  /* os */
  };

#undef  elf_backend_arch_data
#define elf_backend_arch_data   &elf_x86_64_nacl_arch_bed

#undef  elf_backend_object_p
#define elf_backend_object_p                    elf64_x86_64_nacl_elf_object_p
#undef  elf_backend_modify_segment_map
#define elf_backend_modify_segment_map          nacl_modify_segment_map
#undef  elf_backend_modify_program_headers
#define elf_backend_modify_program_headers      nacl_modify_program_headers
#undef  elf_backend_final_write_processing
#define elf_backend_final_write_processing      nacl_final_write_processing

#include "elf64-target.h"

/* Native Client x32 support.  */

static bfd_boolean
elf32_x86_64_nacl_elf_object_p (bfd *abfd)
{
  /* Set the right machine number for a NaCl x86-64 ELF32 file.  */
  bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x64_32_nacl);
  return TRUE;
}

#undef  TARGET_LITTLE_SYM
#define TARGET_LITTLE_SYM               x86_64_elf32_nacl_vec
#undef  TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME              "elf32-x86-64-nacl"
#undef  elf32_bed
#define elf32_bed                       elf32_x86_64_nacl_bed

#define bfd_elf32_bfd_reloc_type_lookup \
  elf_x86_64_reloc_type_lookup
#define bfd_elf32_bfd_reloc_name_lookup \
  elf_x86_64_reloc_name_lookup
#define bfd_elf32_get_synthetic_symtab \
  elf_x86_64_get_synthetic_symtab

#undef elf_backend_object_p
#define elf_backend_object_p \
  elf32_x86_64_nacl_elf_object_p

#undef elf_backend_bfd_from_remote_memory
#define elf_backend_bfd_from_remote_memory \
  _bfd_elf32_bfd_from_remote_memory

#undef elf_backend_size_info
#define elf_backend_size_info \
  _bfd_elf32_size_info

#include "elf32-target.h"

/* Restore defaults.  */
#undef  elf_backend_object_p
#define elf_backend_object_p                elf64_x86_64_elf_object_p
#undef  elf_backend_bfd_from_remote_memory
#undef  elf_backend_size_info
#undef  elf_backend_modify_segment_map
#undef  elf_backend_modify_program_headers
#undef  elf_backend_final_write_processing

/* Intel L1OM support.  */

static bfd_boolean
elf64_l1om_elf_object_p (bfd *abfd)
{
  /* Set the right machine number for an L1OM elf64 file.  */
  bfd_default_set_arch_mach (abfd, bfd_arch_l1om, bfd_mach_l1om);
  return TRUE;
}

#undef  TARGET_LITTLE_SYM
#define TARGET_LITTLE_SYM                   l1om_elf64_vec
#undef  TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME                  "elf64-l1om"
#undef ELF_ARCH
#define ELF_ARCH                            bfd_arch_l1om

#undef  ELF_MACHINE_CODE
#define ELF_MACHINE_CODE                    EM_L1OM

#undef  ELF_OSABI

#undef  elf64_bed
#define elf64_bed elf64_l1om_bed

#undef elf_backend_object_p
#define elf_backend_object_p                elf64_l1om_elf_object_p

/* Restore defaults.  */
#undef  ELF_MAXPAGESIZE
#undef  ELF_MINPAGESIZE
#undef  ELF_COMMONPAGESIZE
#define ELF_MAXPAGESIZE                 0x200000
#define ELF_MINPAGESIZE                 0x1000
#define ELF_COMMONPAGESIZE              0x1000
#undef  elf_backend_plt_alignment
#define elf_backend_plt_alignment       4
#undef  elf_backend_arch_data
#define elf_backend_arch_data   &elf_x86_64_arch_bed

#include "elf64-target.h"

/* FreeBSD L1OM support.  */

#undef  TARGET_LITTLE_SYM
#define TARGET_LITTLE_SYM                   l1om_elf64_fbsd_vec
#undef  TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME                  "elf64-l1om-freebsd"

#undef  ELF_OSABI
#define ELF_OSABI                           ELFOSABI_FREEBSD

#undef  elf64_bed
#define elf64_bed elf64_l1om_fbsd_bed

#include "elf64-target.h"

/* Intel K1OM support.  */

static bfd_boolean
elf64_k1om_elf_object_p (bfd *abfd)
{
  /* Set the right machine number for an K1OM elf64 file.  */
  bfd_default_set_arch_mach (abfd, bfd_arch_k1om, bfd_mach_k1om);
  return TRUE;
}

#undef  TARGET_LITTLE_SYM
#define TARGET_LITTLE_SYM                   k1om_elf64_vec
#undef  TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME                  "elf64-k1om"
#undef ELF_ARCH
#define ELF_ARCH                            bfd_arch_k1om

#undef  ELF_MACHINE_CODE
#define ELF_MACHINE_CODE                    EM_K1OM

#undef  ELF_OSABI

#undef  elf64_bed
#define elf64_bed elf64_k1om_bed

#undef elf_backend_object_p
#define elf_backend_object_p                elf64_k1om_elf_object_p

#undef  elf_backend_static_tls_alignment

#undef elf_backend_want_plt_sym
#define elf_backend_want_plt_sym            0

#include "elf64-target.h"

/* FreeBSD K1OM support.  */

#undef  TARGET_LITTLE_SYM
#define TARGET_LITTLE_SYM                   k1om_elf64_fbsd_vec
#undef  TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME                  "elf64-k1om-freebsd"

#undef  ELF_OSABI
#define ELF_OSABI                           ELFOSABI_FREEBSD

#undef  elf64_bed
#define elf64_bed elf64_k1om_fbsd_bed

#include "elf64-target.h"

/* 32bit x86-64 support.  */

#undef  TARGET_LITTLE_SYM
#define TARGET_LITTLE_SYM                   x86_64_elf32_vec
#undef  TARGET_LITTLE_NAME
#define TARGET_LITTLE_NAME                  "elf32-x86-64"
#undef  elf32_bed

#undef ELF_ARCH
#define ELF_ARCH                            bfd_arch_i386

#undef  ELF_MACHINE_CODE
#define ELF_MACHINE_CODE                    EM_X86_64

#undef  ELF_OSABI

#undef elf_backend_object_p
#define elf_backend_object_p \
  elf32_x86_64_elf_object_p

#undef elf_backend_bfd_from_remote_memory
#define elf_backend_bfd_from_remote_memory \
  _bfd_elf32_bfd_from_remote_memory

#undef elf_backend_size_info
#define elf_backend_size_info \
  _bfd_elf32_size_info

#include "elf32-target.h"