binutils-gdb/bfd/elf64-mips.c

/* MIPS-specific support for 64-bit ELF
   Copyright 1996 Free Software Foundation, Inc.
   Ian Lance Taylor, Cygnus Support

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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "bfdlink.h"
#include "genlink.h"
#include "elf-bfd.h"
#include "elf/mips.h"

/* This file supports the 64-bit MIPS ELF ABI.

   The MIPS 64-bit ELF ABI uses an unusual reloc format.  This file
   overrides the usual ELF reloc handling, and handles reading and
   writing the relocations here.  */

static void mips_elf64_swap_reloc_in
  PARAMS ((bfd *, const Elf64_Mips_External_Rel *,
	   Elf64_Mips_Internal_Rel *));
static void mips_elf64_swap_reloca_in
  PARAMS ((bfd *, const Elf64_Mips_External_Rela *,
	   Elf64_Mips_Internal_Rela *));
static void mips_elf64_swap_reloc_out
  PARAMS ((bfd *, const Elf64_Mips_Internal_Rel *,
	   Elf64_Mips_External_Rel *));
static void mips_elf64_swap_reloca_out
  PARAMS ((bfd *, const Elf64_Mips_Internal_Rela *,
	   Elf64_Mips_External_Rela *));
static reloc_howto_type *mips_elf64_reloc_type_lookup
  PARAMS ((bfd *, bfd_reloc_code_real_type));
static boolean mips_elf64_slurp_one_reloc_table
  PARAMS ((bfd *, asection *, asymbol **, const Elf_Internal_Shdr *));
static boolean mips_elf64_slurp_reloc_table
  PARAMS ((bfd *, asection *, asymbol **));
static void mips_elf64_write_relocs PARAMS ((bfd *, asection *, PTR));
static boolean mips_elf64_section_from_shdr
  PARAMS ((bfd *, Elf_Internal_Shdr *, char *));

/* The relocation types.  */

enum mips_elf64_reloc_type
{
  R_MIPS_NONE = 0,
  R_MIPS_16 = 1,
  R_MIPS_32 = 2,
  R_MIPS_ADD = 2,
  R_MIPS_REL32 = 3,
  R_MIPS_REL = 3,
  R_MIPS_26 = 4,
  R_MIPS_HI16 = 5,
  R_MIPS_LO16 = 6,
  R_MIPS_GPREL16 = 7,
  R_MIPS_GPREL = 7,
  R_MIPS_LITERAL = 8,
  R_MIPS_GOT16 = 9,
  R_MIPS_GOT = 9,
  R_MIPS_PC16 = 10,
  R_MIPS_CALL16 = 11,
  R_MIPS_CALL = 11,
  R_MIPS_GPREL32 = 12,
  R_MIPS_SHIFT5 = 16,
  R_MIPS_SHIFT6 = 17,
  R_MIPS_64 = 18,
  R_MIPS_GOT_DISP = 19,
  R_MIPS_GOT_PAGE = 20,
  R_MIPS_GOT_OFST = 21,
  R_MIPS_GOT_HI16 = 22,
  R_MIPS_GOT_LO16 = 23,
  R_MIPS_SUB = 24,
  R_MIPS_INSERT_A = 25,
  R_MIPS_INSERT_B = 26,
  R_MIPS_DELETE = 27,
  R_MIPS_HIGHER = 28,
  R_MIPS_HIGHEST = 29,
  R_MIPS_CALL_HI16 = 30,
  R_MIPS_CALL_LO16 = 31,
  R_MIPS_SCN_DISP = 32,
  R_MIPS_REL16 = 33,
  R_MIPS_ADD_IMMEDIATE = 34
};

/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
   from smaller values.  Start with zero, widen, *then* decrement.  */
#define MINUS_ONE	(((bfd_vma)0) - 1)

/* FIXME: These need to be rewritten, or we need to use the versions
   in elf32-mips.c.  */
#define mips_elf_hi16_reloc bfd_elf_generic_reloc
#define mips_elf_lo16_reloc bfd_elf_generic_reloc
#define mips_elf_gprel16_reloc bfd_elf_generic_reloc
#define mips_elf_got16_reloc bfd_elf_generic_reloc
#define mips_elf_gprel32_reloc bfd_elf_generic_reloc

/* The relocation table used for SHT_REL sections.  */

static reloc_howto_type mips_elf64_howto_table_rel[] =
{
  /* No relocation.  */
  HOWTO (R_MIPS_NONE,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_NONE",		/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  /* 16 bit relocation.  */
  HOWTO (R_MIPS_16,		/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_16",		/* name */
	 true,			/* partial_inplace */
	 0xffff,		/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 32 bit relocation.  */
  HOWTO (R_MIPS_32,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_32",		/* name */
	 true,			/* partial_inplace */
	 0xffffffff,		/* src_mask */
	 0xffffffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 32 bit symbol relative relocation.  */
  HOWTO (R_MIPS_REL32,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_REL32",	/* name */
	 true,			/* partial_inplace */
	 0xffffffff,		/* src_mask */
	 0xffffffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 26 bit branch address.  */
  HOWTO (R_MIPS_26,		/* type */
	 2,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 26,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 			/* This needs complex overflow
				   detection, because the upper four
				   bits must match the PC.  */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_26",		/* name */
	 true,			/* partial_inplace */
	 0x3ffffff,		/* src_mask */
	 0x3ffffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* High 16 bits of symbol value.  */
  HOWTO (R_MIPS_HI16,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 mips_elf_hi16_reloc,	/* special_function */
	 "R_MIPS_HI16",		/* name */
	 true,			/* partial_inplace */
	 0xffff,		/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Low 16 bits of symbol value.  */
  HOWTO (R_MIPS_LO16,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 mips_elf_lo16_reloc,	/* special_function */
	 "R_MIPS_LO16",		/* name */
	 true,			/* partial_inplace */
	 0xffff,		/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* GP relative reference.  */
  HOWTO (R_MIPS_GPREL16,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 mips_elf_gprel16_reloc, /* special_function */
	 "R_MIPS_GPREL16",	/* name */
	 true,			/* partial_inplace */
	 0xffff,		/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Reference to literal section.  */
  HOWTO (R_MIPS_LITERAL,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 mips_elf_gprel16_reloc, /* special_function */
	 "R_MIPS_LITERAL",	/* name */
	 true,			/* partial_inplace */
	 0xffff,		/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Reference to global offset table.  */
  HOWTO (R_MIPS_GOT16,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 mips_elf_got16_reloc,	/* special_function */
	 "R_MIPS_GOT16",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 16 bit PC relative reference.  */
  HOWTO (R_MIPS_PC16,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 true,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_PC16",		/* name */
	 true,			/* partial_inplace */
	 0xffff,		/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 16 bit call through global offset table.  */
  /* FIXME: This is not handled correctly.  */
  HOWTO (R_MIPS_CALL16,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_CALL16",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 32 bit GP relative reference.  */
  HOWTO (R_MIPS_GPREL32,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 mips_elf_gprel32_reloc, /* special_function */
	 "R_MIPS_GPREL32",	/* name */
	 true,			/* partial_inplace */
	 0xffffffff,		/* src_mask */
	 0xffffffff,		/* dst_mask */
	 false),		/* pcrel_offset */

    { 13 },
    { 14 },
    { 15 },

  /* A 5 bit shift field.  */
  HOWTO (R_MIPS_SHIFT5,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 5,			/* bitsize */
	 false,			/* pc_relative */
	 6,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_SHIFT5",	/* name */
	 true,			/* partial_inplace */
	 0x000007c0,		/* src_mask */
	 0x000007c0,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* A 6 bit shift field.  */
  /* FIXME: This is not handled correctly; a special function is
     needed to put the most significant bit in the right place.  */
  HOWTO (R_MIPS_SHIFT6,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 6,			/* bitsize */
	 false,			/* pc_relative */
	 6,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_SHIFT6",	/* name */
	 true,			/* partial_inplace */
	 0x000007c4,		/* src_mask */
	 0x000007c4,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 64 bit relocation.  */
  HOWTO (R_MIPS_64,		/* type */
	 0,			/* rightshift */
	 4,			/* size (0 = byte, 1 = short, 2 = long) */
	 64,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_64",		/* name */
	 true,			/* partial_inplace */
	 MINUS_ONE,		/* src_mask */
	 MINUS_ONE,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Displacement in the global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_GOT_DISP,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_GOT_DISP",	/* name */
	 true,			/* partial_inplace */
	 0x0000ffff,		/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Displacement to page pointer in the global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_GOT_PAGE,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_GOT_PAGE",	/* name */
	 true,			/* partial_inplace */
	 0x0000ffff,		/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Offset from page pointer in the global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_GOT_OFST,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_GOT_OFST",	/* name */
	 true,			/* partial_inplace */
	 0x0000ffff,		/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* High 16 bits of displacement in global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_GOT_HI16,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_GOT_HI16",	/* name */
	 true,			/* partial_inplace */
	 0x0000ffff,		/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Low 16 bits of displacement in global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_GOT_LO16,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_GOT_LO16",	/* name */
	 true,			/* partial_inplace */
	 0x0000ffff,		/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 64 bit substraction.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_SUB,		/* type */
	 0,			/* rightshift */
	 4,			/* size (0 = byte, 1 = short, 2 = long) */
	 64,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_SUB",		/* name */
	 true,			/* partial_inplace */
	 MINUS_ONE,		/* src_mask */
	 MINUS_ONE,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Insert the addend as an instruction.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_INSERT_A,	/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_INSERT_A",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  /* Insert the addend as an instruction, and change all relocations
     to refer to the old instruction at the address.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_INSERT_B,	/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_INSERT_B",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  /* Delete a 32 bit instruction.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_DELETE,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_DELETE",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  /* Get the higher value of a 64 bit addend.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_HIGHER,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_HIGHER",	/* name */
	 true,			/* partial_inplace */
	 0xffff,		/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Get the highest value of a 64 bit addend.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_HIGHEST,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_HIGHEST",	/* name */
	 true,			/* partial_inplace */
	 0xffff,		/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* High 16 bits of displacement in global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_CALL_HI16,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_CALL_HI16",	/* name */
	 true,			/* partial_inplace */
	 0x0000ffff,		/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Low 16 bits of displacement in global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_CALL_LO16,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_CALL_LO16",	/* name */
	 true,			/* partial_inplace */
	 0x0000ffff,		/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* I'm not sure what the remaining relocs are, but they are defined
     on Irix 6.  */

  HOWTO (R_MIPS_SCN_DISP,	/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_SCN_DISP",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  HOWTO (R_MIPS_REL16,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_REL16",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  HOWTO (R_MIPS_ADD_IMMEDIATE,	/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_ADD_IMMEDIATE", /* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false)			/* pcrel_offset */
};

/* The relocation table used for SHT_RELA sections.  */

static reloc_howto_type mips_elf64_howto_table_rela[] =
{
  /* No relocation.  */
  HOWTO (R_MIPS_NONE,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_NONE",		/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  /* 16 bit relocation.  */
  HOWTO (R_MIPS_16,		/* type */
	 0,			/* rightshift */
	 1,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_16",		/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 32 bit relocation.  */
  HOWTO (R_MIPS_32,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_32",		/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 32 bit symbol relative relocation.  */
  HOWTO (R_MIPS_REL32,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_REL32",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 26 bit branch address.  */
  HOWTO (R_MIPS_26,		/* type */
	 2,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 26,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 			/* This needs complex overflow
				   detection, because the upper four
				   bits must match the PC.  */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_26",		/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x3ffffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* High 16 bits of symbol value.  */
  HOWTO (R_MIPS_HI16,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_HI16",		/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Low 16 bits of symbol value.  */
  HOWTO (R_MIPS_LO16,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_LO16",		/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* GP relative reference.  */
  HOWTO (R_MIPS_GPREL16,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 mips_elf_gprel16_reloc, /* special_function */
	 "R_MIPS_GPREL16",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Reference to literal section.  */
  HOWTO (R_MIPS_LITERAL,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 mips_elf_gprel16_reloc, /* special_function */
	 "R_MIPS_LITERAL",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Reference to global offset table.  */
  HOWTO (R_MIPS_GOT16,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 mips_elf_got16_reloc,	/* special_function */
	 "R_MIPS_GOT16",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 16 bit PC relative reference.  */
  HOWTO (R_MIPS_PC16,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 true,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_PC16",		/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 16 bit call through global offset table.  */
  /* FIXME: This is not handled correctly.  */
  HOWTO (R_MIPS_CALL16,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_signed, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_CALL16",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 32 bit GP relative reference.  */
  HOWTO (R_MIPS_GPREL32,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 32,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 mips_elf_gprel32_reloc, /* special_function */
	 "R_MIPS_GPREL32",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffffffff,		/* dst_mask */
	 false),		/* pcrel_offset */

    { 13 },
    { 14 },
    { 15 },

  /* A 5 bit shift field.  */
  HOWTO (R_MIPS_SHIFT5,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 5,			/* bitsize */
	 false,			/* pc_relative */
	 6,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_SHIFT5",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x000007c0,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* A 6 bit shift field.  */
  /* FIXME: This is not handled correctly; a special function is
     needed to put the most significant bit in the right place.  */
  HOWTO (R_MIPS_SHIFT6,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 6,			/* bitsize */
	 false,			/* pc_relative */
	 6,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_SHIFT6",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x000007c4,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 64 bit relocation.  */
  HOWTO (R_MIPS_64,		/* type */
	 0,			/* rightshift */
	 4,			/* size (0 = byte, 1 = short, 2 = long) */
	 64,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_64",		/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 MINUS_ONE,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Displacement in the global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_GOT_DISP,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_GOT_DISP",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Displacement to page pointer in the global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_GOT_PAGE,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_GOT_PAGE",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Offset from page pointer in the global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_GOT_OFST,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_GOT_OFST",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* High 16 bits of displacement in global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_GOT_HI16,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_GOT_HI16",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Low 16 bits of displacement in global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_GOT_LO16,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_GOT_LO16",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* 64 bit substraction.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_SUB,		/* type */
	 0,			/* rightshift */
	 4,			/* size (0 = byte, 1 = short, 2 = long) */
	 64,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_bitfield, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_SUB",		/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 MINUS_ONE,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Insert the addend as an instruction.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_INSERT_A,	/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_INSERT_A",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  /* Insert the addend as an instruction, and change all relocations
     to refer to the old instruction at the address.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_INSERT_B,	/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_INSERT_B",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  /* Delete a 32 bit instruction.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_DELETE,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_DELETE",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  /* Get the higher value of a 64 bit addend.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_HIGHER,		/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_HIGHER",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Get the highest value of a 64 bit addend.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_HIGHEST,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_HIGHEST",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0xffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* High 16 bits of displacement in global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_CALL_HI16,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_CALL_HI16",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* Low 16 bits of displacement in global offset table.  */
  /* FIXME: Not handled correctly.  */
  HOWTO (R_MIPS_CALL_LO16,	/* type */
	 0,			/* rightshift */
	 2,			/* size (0 = byte, 1 = short, 2 = long) */
	 16,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_CALL_LO16",	/* name */
	 true,			/* partial_inplace */
	 0,			/* src_mask */
	 0x0000ffff,		/* dst_mask */
	 false),		/* pcrel_offset */

  /* I'm not sure what the remaining relocs are, but they are defined
     on Irix 6.  */

  HOWTO (R_MIPS_SCN_DISP,	/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_SCN_DISP",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  HOWTO (R_MIPS_REL16,		/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_REL16",	/* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false),		/* pcrel_offset */

  HOWTO (R_MIPS_ADD_IMMEDIATE,	/* type */
	 0,			/* rightshift */
	 0,			/* size (0 = byte, 1 = short, 2 = long) */
	 0,			/* bitsize */
	 false,			/* pc_relative */
	 0,			/* bitpos */
	 complain_overflow_dont, /* complain_on_overflow */
	 bfd_elf_generic_reloc,	/* special_function */
	 "R_MIPS_ADD_IMMEDIATE", /* name */
	 false,			/* partial_inplace */
	 0,			/* src_mask */
	 0,			/* dst_mask */
	 false)			/* pcrel_offset */
};

/* Swap in a MIPS 64-bit Rel reloc.  */

static void
mips_elf64_swap_reloc_in (abfd, src, dst)
     bfd *abfd;
     const Elf64_Mips_External_Rel *src;
     Elf64_Mips_Internal_Rel *dst;
{
  dst->r_offset = bfd_h_get_64 (abfd, (bfd_byte *) src->r_offset);
  dst->r_sym = bfd_h_get_32 (abfd, (bfd_byte *) src->r_sym);
  dst->r_ssym = bfd_h_get_8 (abfd, (bfd_byte *) src->r_ssym);
  dst->r_type3 = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type3);
  dst->r_type2 = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type2);
  dst->r_type = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type);
}

/* Swap in a MIPS 64-bit Rela reloc.  */

static void
mips_elf64_swap_reloca_in (abfd, src, dst)
     bfd *abfd;
     const Elf64_Mips_External_Rela *src;
     Elf64_Mips_Internal_Rela *dst;
{
  dst->r_offset = bfd_h_get_64 (abfd, (bfd_byte *) src->r_offset);
  dst->r_sym = bfd_h_get_32 (abfd, (bfd_byte *) src->r_sym);
  dst->r_ssym = bfd_h_get_8 (abfd, (bfd_byte *) src->r_ssym);
  dst->r_type3 = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type3);
  dst->r_type2 = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type2);
  dst->r_type = bfd_h_get_8 (abfd, (bfd_byte *) src->r_type);
  dst->r_addend = bfd_h_get_64 (abfd, (bfd_byte *) src->r_addend);
}

/* Swap out a MIPS 64-bit Rel reloc.  */

static void
mips_elf64_swap_reloc_out (abfd, src, dst)
     bfd *abfd;
     const Elf64_Mips_Internal_Rel *src;
     Elf64_Mips_External_Rel *dst;
{
  bfd_h_put_64 (abfd, src->r_offset, (bfd_byte *) dst->r_offset);
  bfd_h_put_32 (abfd, src->r_sym, (bfd_byte *) dst->r_sym);
  bfd_h_put_8 (abfd, src->r_ssym, (bfd_byte *) dst->r_ssym);
  bfd_h_put_8 (abfd, src->r_type3, (bfd_byte *) dst->r_type3);
  bfd_h_put_8 (abfd, src->r_type2, (bfd_byte *) dst->r_type2);
  bfd_h_put_8 (abfd, src->r_type, (bfd_byte *) dst->r_type);
}

/* Swap out a MIPS 64-bit Rela reloc.  */

static void
mips_elf64_swap_reloca_out (abfd, src, dst)
     bfd *abfd;
     const Elf64_Mips_Internal_Rela *src;
     Elf64_Mips_External_Rela *dst;
{
  bfd_h_put_64 (abfd, src->r_offset, (bfd_byte *) dst->r_offset);
  bfd_h_put_32 (abfd, src->r_sym, (bfd_byte *) dst->r_sym);
  bfd_h_put_8 (abfd, src->r_ssym, (bfd_byte *) dst->r_ssym);
  bfd_h_put_8 (abfd, src->r_type3, (bfd_byte *) dst->r_type3);
  bfd_h_put_8 (abfd, src->r_type2, (bfd_byte *) dst->r_type2);
  bfd_h_put_8 (abfd, src->r_type, (bfd_byte *) dst->r_type);
  bfd_h_put_64 (abfd, src->r_offset, (bfd_byte *) dst->r_offset);
}

/* A mapping from BFD reloc types to MIPS ELF reloc types.  */

struct elf_reloc_map
{
  bfd_reloc_code_real_type bfd_reloc_val;
  enum mips_elf64_reloc_type elf_reloc_val;
};

static CONST struct elf_reloc_map mips_reloc_map[] =
{
  { BFD_RELOC_NONE, R_MIPS_NONE, },
  { BFD_RELOC_16, R_MIPS_16 },
  { BFD_RELOC_32, R_MIPS_32 },
  { BFD_RELOC_64, R_MIPS_64 },
  { BFD_RELOC_CTOR, R_MIPS_64 },
  { BFD_RELOC_32_PCREL, R_MIPS_REL32 },
  { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
  { BFD_RELOC_HI16_S, R_MIPS_HI16 },
  { BFD_RELOC_LO16, R_MIPS_LO16 },
  { BFD_RELOC_MIPS_GPREL, R_MIPS_GPREL16 },
  { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
  { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
  { BFD_RELOC_16_PCREL, R_MIPS_PC16 },
  { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
  { BFD_RELOC_MIPS_GPREL32, R_MIPS_GPREL32 },
  { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
  { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
  { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
  { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }
};

/* Given a BFD reloc type, return a howto structure.  */

static reloc_howto_type *
mips_elf64_reloc_type_lookup (abfd, code)
     bfd *abfd;
     bfd_reloc_code_real_type code;
{
  unsigned int i;

  for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); i++)
    {
      if (mips_reloc_map[i].bfd_reloc_val == code)
	{
	  int v;

	  v = (int) mips_reloc_map[i].elf_reloc_val;
	  return &mips_elf64_howto_table_rel[v];
	}
    }

  return NULL;
}

/* Read the relocations from one reloc section.  */

static boolean
mips_elf64_slurp_one_reloc_table (abfd, asect, symbols, rel_hdr)
     bfd *abfd;
     asection *asect;
     asymbol **symbols;
     const Elf_Internal_Shdr *rel_hdr;
{
  PTR allocated = NULL;
  bfd_byte *native_relocs;
  arelent *relents;
  arelent *relent;
  unsigned int count;
  unsigned int i;
  int entsize;
  reloc_howto_type *howto_table;

  allocated = (PTR) bfd_malloc (rel_hdr->sh_size);
  if (allocated == NULL)
    goto error_return;

  if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0
      || (bfd_read (allocated, 1, rel_hdr->sh_size, abfd) != rel_hdr->sh_size))
    goto error_return;

  native_relocs = (bfd_byte *) allocated;

  relents = asect->relocation + asect->reloc_count;

  entsize = rel_hdr->sh_entsize;
  BFD_ASSERT (entsize == sizeof (Elf64_Mips_External_Rel)
	      || entsize == sizeof (Elf64_Mips_External_Rela));

  count = rel_hdr->sh_size / entsize;

  if (entsize == sizeof (Elf64_Mips_External_Rel))
    howto_table = mips_elf64_howto_table_rel;
  else
    howto_table = mips_elf64_howto_table_rela;

  relent = relents;
  for (i = 0; i < count; i++, native_relocs += entsize)
    {
      Elf64_Mips_Internal_Rela rela;
      boolean used_sym, used_ssym;
      int ir;

      if (entsize == sizeof (Elf64_Mips_External_Rela))
	mips_elf64_swap_reloca_in (abfd,
				   (Elf64_Mips_External_Rela *) native_relocs,
				   &rela);
      else
	{
	  Elf64_Mips_Internal_Rel rel;

	  mips_elf64_swap_reloc_in (abfd,
				    (Elf64_Mips_External_Rel *) native_relocs,
				    &rel);
	  rela.r_offset = rel.r_offset;
	  rela.r_sym = rel.r_sym;
	  rela.r_ssym = rel.r_ssym;
	  rela.r_type3 = rel.r_type3;
	  rela.r_type2 = rel.r_type2;
	  rela.r_type = rel.r_type;
	  rela.r_addend = 0;
	}

      /* Each entry represents up to three actual relocations.  */

      used_sym = false;
      used_ssym = false;
      for (ir = 0; ir < 3; ir++)
	{
	  enum mips_elf64_reloc_type type;

	  switch (ir)
	    {
	    default:
	      abort ();
	    case 0:
	      type = (enum mips_elf64_reloc_type) rela.r_type;
	      break;
	    case 1:
	      type = (enum mips_elf64_reloc_type) rela.r_type2;
	      break;
	    case 2:
	      type = (enum mips_elf64_reloc_type) rela.r_type3;
	      break;
	    }

	  if (type == R_MIPS_NONE)
	    {
	      /* There are no more relocations in this entry.  If this
                 is the first entry, we need to generate a dummy
                 relocation so that the generic linker knows that
                 there has been a break in the sequence of relocations
                 applying to a particular address.  */
	      if (ir == 0)
		{
		  relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
		  if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
		    relent->address = rela.r_offset;
		  else
		    relent->address = rela.r_offset - asect->vma;
		  relent->addend = 0;
		  relent->howto = &howto_table[(int) R_MIPS_NONE];
		  ++relent;
		}
	      break;
	    }

	  /* Some types require symbols, whereas some do not.  */
	  switch (type)
	    {
	    case R_MIPS_NONE:
	    case R_MIPS_LITERAL:
	    case R_MIPS_INSERT_A:
	    case R_MIPS_INSERT_B:
	    case R_MIPS_DELETE:
	      relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
	      break;

	    default:
	      if (! used_sym)
		{
		  if (rela.r_sym == 0)
		    relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
		  else
		    {
		      asymbol **ps, *s;

		      ps = symbols + rela.r_sym - 1;
		      s = *ps;
		      if ((s->flags & BSF_SECTION_SYM) == 0)
			relent->sym_ptr_ptr = ps;
		      else
			relent->sym_ptr_ptr = s->section->symbol_ptr_ptr;
		    }

		  used_sym = true;
		}
	      else if (! used_ssym)
		{
		  switch (rela.r_ssym)
		    {
		    case RSS_UNDEF:
		      relent->sym_ptr_ptr =
			bfd_abs_section_ptr->symbol_ptr_ptr;
		      break;

		    case RSS_GP:
		    case RSS_GP0:
		    case RSS_LOC:
		      /* FIXME: I think these need to be handled using
                         special howto structures.  */
		      BFD_ASSERT (0);
		      break;

		    default:
		      BFD_ASSERT (0);
		      break;
		    }

		  used_ssym = true;
		}
	      else
		relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;

	      break;
	    }

	  /* The address of an ELF reloc is section relative for an
	     object file, and absolute for an executable file or
	     shared library.  The address of a BFD reloc is always
	     section relative.  */
	  if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
	    relent->address = rela.r_offset;
	  else
	    relent->address = rela.r_offset - asect->vma;

	  relent->addend = rela.r_addend;

	  relent->howto = &howto_table[(int) type];

	  ++relent;
	}
    }

  asect->reloc_count += relent - relents;

  if (allocated != NULL)
    free (allocated);

  return true;

 error_return:
  if (allocated != NULL)
    free (allocated);
  return false;
}

/* Read the relocations.  On Irix 6, there can be two reloc sections
   associated with a single data section.  */

static boolean
mips_elf64_slurp_reloc_table (abfd, asect, symbols)
     bfd *abfd;
     asection *asect;
     asymbol **symbols;
{
  struct bfd_elf_section_data * const d = elf_section_data (asect);

  if (asect->relocation != NULL
      || (asect->flags & SEC_RELOC) == 0
      || asect->reloc_count == 0)
    return true;

  /* Allocate space for 3 arelent structures for each Rel structure.  */
  asect->relocation = ((arelent *)
		       bfd_alloc (abfd,
				  asect->reloc_count * 3 * sizeof (arelent)));
  if (asect->relocation == NULL)
    return false;

  /* The slurp_one_reloc_table routine increments reloc_count.  */
  asect->reloc_count = 0;

  if (! mips_elf64_slurp_one_reloc_table (abfd, asect, symbols, &d->rel_hdr))
    return false;
  if (d->rel_hdr2 != NULL)
    {
      if (! mips_elf64_slurp_one_reloc_table (abfd, asect, symbols,
					      d->rel_hdr2))
	return false;
    }

  return true;
}

/* Write out the relocations.  */

static void
mips_elf64_write_relocs (abfd, sec, data)
     bfd *abfd;
     asection *sec;
     PTR data;
{
  /* FIXME.  */
  abort ();
}

/* Handle a 64-bit MIPS ELF specific section.  */

static boolean
mips_elf64_section_from_shdr (abfd, hdr, name)
     bfd *abfd;
     Elf_Internal_Shdr *hdr;
     char *name;
{
  if (! _bfd_mips_elf_section_from_shdr (abfd, hdr, name))
    return false;

  return true;
}

/* Relocations in the 64 bit MIPS ELF ABI are more complex than in
   standard ELF.  This structure is used to redirect the relocation
   handling routines.  */

const struct elf_size_info mips_elf64_size_info =
{
  sizeof (Elf64_External_Ehdr),
  sizeof (Elf64_External_Phdr),
  sizeof (Elf64_External_Shdr),
  sizeof (Elf64_Mips_External_Rel),
  sizeof (Elf64_Mips_External_Rela),
  sizeof (Elf64_External_Sym),
  sizeof (Elf64_External_Dyn),
  sizeof (Elf_External_Note),
  64,		/* arch_size */
  8,		/* file_align */
  ELFCLASS64,
  EV_CURRENT,
  bfd_elf64_write_out_phdrs,
  bfd_elf64_write_shdrs_and_ehdr,
  mips_elf64_write_relocs,
  bfd_elf64_swap_symbol_out,
  mips_elf64_slurp_reloc_table,
  bfd_elf64_slurp_symbol_table,
  bfd_elf64_swap_dyn_in
};

#define TARGET_LITTLE_SYM		bfd_elf64_littlemips_vec
#define TARGET_LITTLE_NAME		"elf64-littlemips"
#define TARGET_BIG_SYM			bfd_elf64_bigmips_vec
#define TARGET_BIG_NAME			"elf64-bigmips"
#define ELF_ARCH			bfd_arch_mips
#define ELF_MACHINE_CODE		EM_MIPS
#define ELF_MAXPAGESIZE			0x1000
#define elf_backend_size_info		mips_elf64_size_info
#define elf_backend_section_from_shdr	mips_elf64_section_from_shdr
#define bfd_elf64_bfd_reloc_type_lookup	mips_elf64_reloc_type_lookup

#include "elf64-target.h"