elf64-sparc.c

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/* SPARC-specific support for 64-bit ELF
   Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
   Free Software Foundation, Inc.

This file is part of BFD, the Binary File Descriptor library.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 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 "elf-bfd.h"
#include "opcode/sparc.h"

/* This is defined if one wants to build upward compatible binaries
   with the original sparc64-elf toolchain.  The support is kept in for
   now but is turned off by default.  dje 970930  */
/*#define SPARC64_OLD_RELOCS*/

#include "elf/sparc.h"

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

static struct bfd_link_hash_table * sparc64_elf_bfd_link_hash_table_create
  PARAMS((bfd *));
static reloc_howto_type *sparc64_elf_reloc_type_lookup
  PARAMS ((bfd *, bfd_reloc_code_real_type));
static void sparc64_elf_info_to_howto
  PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));

static void sparc64_elf_build_plt
  PARAMS((bfd *, unsigned char *, int));
static bfd_vma sparc64_elf_plt_entry_offset
  PARAMS((int));
static bfd_vma sparc64_elf_plt_ptr_offset
  PARAMS((int, int));

static boolean sparc64_elf_check_relocs
  PARAMS((bfd *, struct bfd_link_info *, asection *sec,
	  const Elf_Internal_Rela *));
static boolean sparc64_elf_adjust_dynamic_symbol
  PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *));
static boolean sparc64_elf_size_dynamic_sections
  PARAMS((bfd *, struct bfd_link_info *));
static int sparc64_elf_get_symbol_type
  PARAMS (( Elf_Internal_Sym *, int));
static boolean sparc64_elf_add_symbol_hook
  PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
        const char **, flagword *, asection **, bfd_vma *));
static void sparc64_elf_symbol_processing
  PARAMS ((bfd *, asymbol *));

static boolean sparc64_elf_copy_private_bfd_data
  PARAMS ((bfd *, bfd *));
static boolean sparc64_elf_merge_private_bfd_data
  PARAMS ((bfd *, bfd *));

static boolean sparc64_elf_relax_section
  PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
static boolean sparc64_elf_relocate_section
  PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
	   Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
static boolean sparc64_elf_object_p PARAMS ((bfd *));
static long sparc64_elf_get_reloc_upper_bound PARAMS ((bfd *, asection *));
static long sparc64_elf_get_dynamic_reloc_upper_bound PARAMS ((bfd *));
static boolean sparc64_elf_slurp_one_reloc_table
  PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, asymbol **, boolean));
static boolean sparc64_elf_slurp_reloc_table
  PARAMS ((bfd *, asection *, asymbol **, boolean));
static long sparc64_elf_canonicalize_dynamic_reloc
  PARAMS ((bfd *, arelent **, asymbol **));
static void sparc64_elf_write_relocs PARAMS ((bfd *, asection *, PTR));

/* The relocation "howto" table.  */

static bfd_reloc_status_type sparc_elf_notsup_reloc
  PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static bfd_reloc_status_type sparc_elf_wdisp16_reloc
  PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static bfd_reloc_status_type sparc_elf_hix22_reloc
  PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static bfd_reloc_status_type sparc_elf_lox10_reloc
  PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));

static reloc_howto_type sparc64_elf_howto_table[] =
{
  HOWTO(R_SPARC_NONE,      0,0, 0,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_NONE",    false,0,0x00000000,true),
  HOWTO(R_SPARC_8,         0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_8",       false,0,0x000000ff,true),
  HOWTO(R_SPARC_16,        0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_16",      false,0,0x0000ffff,true),
  HOWTO(R_SPARC_32,        0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_32",      false,0,0xffffffff,true),
  HOWTO(R_SPARC_DISP8,     0,0, 8,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_DISP8",   false,0,0x000000ff,true),
  HOWTO(R_SPARC_DISP16,    0,1,16,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_DISP16",  false,0,0x0000ffff,true),
  HOWTO(R_SPARC_DISP32,    0,2,32,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_DISP32",  false,0,0x00ffffff,true),
  HOWTO(R_SPARC_WDISP30,   2,2,30,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_WDISP30", false,0,0x3fffffff,true),
  HOWTO(R_SPARC_WDISP22,   2,2,22,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_WDISP22", false,0,0x003fffff,true),
  HOWTO(R_SPARC_HI22,     10,2,22,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_HI22",    false,0,0x003fffff,true),
  HOWTO(R_SPARC_22,        0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_22",      false,0,0x003fffff,true),
  HOWTO(R_SPARC_13,        0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_13",      false,0,0x00001fff,true),
  HOWTO(R_SPARC_LO10,      0,2,10,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_LO10",    false,0,0x000003ff,true),
  HOWTO(R_SPARC_GOT10,     0,2,10,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_GOT10",   false,0,0x000003ff,true),
  HOWTO(R_SPARC_GOT13,     0,2,13,false,0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_GOT13",   false,0,0x00001fff,true),
  HOWTO(R_SPARC_GOT22,    10,2,22,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_GOT22",   false,0,0x003fffff,true),
  HOWTO(R_SPARC_PC10,      0,2,10,true, 0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_PC10",    false,0,0x000003ff,true),
  HOWTO(R_SPARC_PC22,     10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_PC22",    false,0,0x003fffff,true),
  HOWTO(R_SPARC_WPLT30,    2,2,30,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_WPLT30",  false,0,0x3fffffff,true),
  HOWTO(R_SPARC_COPY,      0,0,00,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_COPY",    false,0,0x00000000,true),
  HOWTO(R_SPARC_GLOB_DAT,  0,0,00,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_GLOB_DAT",false,0,0x00000000,true),
  HOWTO(R_SPARC_JMP_SLOT,  0,0,00,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_JMP_SLOT",false,0,0x00000000,true),
  HOWTO(R_SPARC_RELATIVE,  0,0,00,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_RELATIVE",false,0,0x00000000,true),
  HOWTO(R_SPARC_UA32,      0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_UA32",    false,0,0xffffffff,true),
#ifndef SPARC64_OLD_RELOCS
  /* These aren't implemented yet.  */
  HOWTO(R_SPARC_PLT32,     0,0,00,false,0,complain_overflow_dont,    sparc_elf_notsup_reloc, "R_SPARC_PLT32",    false,0,0x00000000,true),
  HOWTO(R_SPARC_HIPLT22,   0,0,00,false,0,complain_overflow_dont,    sparc_elf_notsup_reloc, "R_SPARC_HIPLT22",  false,0,0x00000000,true),
  HOWTO(R_SPARC_LOPLT10,   0,0,00,false,0,complain_overflow_dont,    sparc_elf_notsup_reloc, "R_SPARC_LOPLT10",  false,0,0x00000000,true),
  HOWTO(R_SPARC_PCPLT32,   0,0,00,false,0,complain_overflow_dont,    sparc_elf_notsup_reloc, "R_SPARC_PCPLT32",  false,0,0x00000000,true),
  HOWTO(R_SPARC_PCPLT22,   0,0,00,false,0,complain_overflow_dont,    sparc_elf_notsup_reloc, "R_SPARC_PCPLT22",  false,0,0x00000000,true),
  HOWTO(R_SPARC_PCPLT10,   0,0,00,false,0,complain_overflow_dont,    sparc_elf_notsup_reloc, "R_SPARC_PCPLT10",  false,0,0x00000000,true),
#endif
  HOWTO(R_SPARC_10,        0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_10",      false,0,0x000003ff,true),
  HOWTO(R_SPARC_11,        0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_11",      false,0,0x000007ff,true),
  HOWTO(R_SPARC_64,        0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_64",      false,0,MINUS_ONE, true),
  HOWTO(R_SPARC_OLO10,     0,2,13,false,0,complain_overflow_signed,  sparc_elf_notsup_reloc, "R_SPARC_OLO10",   false,0,0x00001fff,true),
  HOWTO(R_SPARC_HH22,     42,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc,  "R_SPARC_HH22",    false,0,0x003fffff,true),
  HOWTO(R_SPARC_HM10,     32,2,10,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_HM10",    false,0,0x000003ff,true),
  HOWTO(R_SPARC_LM22,     10,2,22,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_LM22",    false,0,0x003fffff,true),
  HOWTO(R_SPARC_PC_HH22,  42,2,22,true, 0,complain_overflow_unsigned,bfd_elf_generic_reloc,  "R_SPARC_PC_HH22",    false,0,0x003fffff,true),
  HOWTO(R_SPARC_PC_HM10,  32,2,10,true, 0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_PC_HM10",    false,0,0x000003ff,true),
  HOWTO(R_SPARC_PC_LM22,  10,2,22,true, 0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_PC_LM22",    false,0,0x003fffff,true),
  HOWTO(R_SPARC_WDISP16,   2,2,16,true, 0,complain_overflow_signed,  sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true),
  HOWTO(R_SPARC_WDISP19,   2,2,19,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_WDISP19", false,0,0x0007ffff,true),
  HOWTO(R_SPARC_UNUSED_42, 0,0, 0,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_UNUSED_42",false,0,0x00000000,true),
  HOWTO(R_SPARC_7,         0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_7",       false,0,0x0000007f,true),
  HOWTO(R_SPARC_5,         0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_5",       false,0,0x0000001f,true),
  HOWTO(R_SPARC_6,         0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_6",       false,0,0x0000003f,true),
  HOWTO(R_SPARC_DISP64,    0,4,64,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_DISP64",  false,0,MINUS_ONE, true),
  HOWTO(R_SPARC_PLT64,     0,4,64,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_PLT64",   false,0,MINUS_ONE, false),
  HOWTO(R_SPARC_HIX22,     0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,  "R_SPARC_HIX22",   false,0,MINUS_ONE, false),
  HOWTO(R_SPARC_LOX10,     0,4, 0,false,0,complain_overflow_dont,    sparc_elf_lox10_reloc,  "R_SPARC_LOX10",   false,0,MINUS_ONE, false),
  HOWTO(R_SPARC_H44,      22,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc,  "R_SPARC_H44",     false,0,0x003fffff,false),
  HOWTO(R_SPARC_M44,      12,2,10,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_M44",     false,0,0x000003ff,false),
  HOWTO(R_SPARC_L44,       0,2,13,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_L44",     false,0,0x00000fff,false),
  HOWTO(R_SPARC_REGISTER,  0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",false,0,MINUS_ONE, false),
  HOWTO(R_SPARC_UA64,        0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_UA64",      false,0,MINUS_ONE, true),
  HOWTO(R_SPARC_UA16,        0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_UA16",      false,0,0x0000ffff,true)
};

struct elf_reloc_map {
  bfd_reloc_code_real_type bfd_reloc_val;
  unsigned char elf_reloc_val;
};

static CONST struct elf_reloc_map sparc_reloc_map[] =
{
  { BFD_RELOC_NONE, R_SPARC_NONE, },
  { BFD_RELOC_16, R_SPARC_16, },
  { BFD_RELOC_8, R_SPARC_8 },
  { BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
  { BFD_RELOC_CTOR, R_SPARC_64 },
  { BFD_RELOC_32, R_SPARC_32 },
  { BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
  { BFD_RELOC_HI22, R_SPARC_HI22 },
  { BFD_RELOC_LO10, R_SPARC_LO10, },
  { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
  { BFD_RELOC_SPARC22, R_SPARC_22 },
  { BFD_RELOC_SPARC13, R_SPARC_13 },
  { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
  { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
  { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
  { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
  { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
  { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
  { BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
  { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
  { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
  { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
  { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
  { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 },
  { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 },
  { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 },
  { BFD_RELOC_SPARC_10, R_SPARC_10 },
  { BFD_RELOC_SPARC_11, R_SPARC_11 },
  { BFD_RELOC_SPARC_64, R_SPARC_64 },
  { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 },
  { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 },
  { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 },
  { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 },
  { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 },
  { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 },
  { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 },
  { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 },
  { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 },
  { BFD_RELOC_SPARC_7, R_SPARC_7 },
  { BFD_RELOC_SPARC_5, R_SPARC_5 },
  { BFD_RELOC_SPARC_6, R_SPARC_6 },
  { BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64 },
  { BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64 },
  { BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22 },
  { BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10 },
  { BFD_RELOC_SPARC_H44, R_SPARC_H44 },
  { BFD_RELOC_SPARC_M44, R_SPARC_M44 },
  { BFD_RELOC_SPARC_L44, R_SPARC_L44 },
  { BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER }
};

static reloc_howto_type *
sparc64_elf_reloc_type_lookup (abfd, code)
     bfd *abfd ATTRIBUTE_UNUSED;
     bfd_reloc_code_real_type code;
{
  unsigned int i;
  for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++)
    {
      if (sparc_reloc_map[i].bfd_reloc_val == code)
	return &sparc64_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val];
    }
  return 0;
}

static void
sparc64_elf_info_to_howto (abfd, cache_ptr, dst)
     bfd *abfd ATTRIBUTE_UNUSED;
     arelent *cache_ptr;
     Elf64_Internal_Rela *dst;
{
  BFD_ASSERT (ELF64_R_TYPE_ID (dst->r_info) < (unsigned int) R_SPARC_max_std);
  cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (dst->r_info)];
}

/* Due to the way how we handle R_SPARC_OLO10, each entry in a SHT_RELA
   section can represent up to two relocs, we must tell the user to allocate
   more space.  */

static long
sparc64_elf_get_reloc_upper_bound (abfd, sec)
     bfd *abfd ATTRIBUTE_UNUSED;
     asection *sec;
{
  return (sec->reloc_count * 2 + 1) * sizeof (arelent *);
}

static long
sparc64_elf_get_dynamic_reloc_upper_bound (abfd)
     bfd *abfd;
{
  return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 2;
}

/* Read  relocations for ASECT from REL_HDR.  There are RELOC_COUNT of
   them.  We cannot use generic elf routines for this,  because R_SPARC_OLO10
   has secondary addend in ELF64_R_TYPE_DATA.  We handle it as two relocations
   for the same location,  R_SPARC_LO10 and R_SPARC_13.  */

static boolean
sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, dynamic)
     bfd *abfd;
     asection *asect;
     Elf_Internal_Shdr *rel_hdr;
     asymbol **symbols;
     boolean dynamic;
{
  PTR allocated = NULL;
  bfd_byte *native_relocs;
  arelent *relent;
  unsigned int i;
  int entsize;
  bfd_size_type count;
  arelent *relents;

  allocated = (PTR) bfd_malloc ((size_t) 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_External_Rela));

  count = rel_hdr->sh_size / entsize;

  for (i = 0, relent = relents; i < count;
       i++, relent++, native_relocs += entsize)
    {
      Elf_Internal_Rela rela;

      bfd_elf64_swap_reloca_in (abfd, (Elf64_External_Rela *) native_relocs, &rela);

      /* 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 normal BFD reloc is always section relative,
	 and the address of a dynamic reloc is absolute..  */
      if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic)
	relent->address = rela.r_offset;
      else
	relent->address = rela.r_offset - asect->vma;

      if (ELF64_R_SYM (rela.r_info) == 0)
	relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
      else
	{
	  asymbol **ps, *s;

	  ps = symbols + ELF64_R_SYM (rela.r_info) - 1;
	  s = *ps;

	  /* Canonicalize ELF section symbols.  FIXME: Why?  */
	  if ((s->flags & BSF_SECTION_SYM) == 0)
	    relent->sym_ptr_ptr = ps;
	  else
	    relent->sym_ptr_ptr = s->section->symbol_ptr_ptr;
	}

      relent->addend = rela.r_addend;

      BFD_ASSERT (ELF64_R_TYPE_ID (rela.r_info) < (unsigned int) R_SPARC_max_std);
      if (ELF64_R_TYPE_ID (rela.r_info) == R_SPARC_OLO10)
	{
	  relent->howto = &sparc64_elf_howto_table[R_SPARC_LO10];
	  relent[1].address = relent->address;
	  relent++;
	  relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
	  relent->addend = ELF64_R_TYPE_DATA (rela.r_info);
	  relent->howto = &sparc64_elf_howto_table[R_SPARC_13];
	}
      else
	relent->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (rela.r_info)];
    }

  asect->reloc_count += relent - relents;

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

  return true;

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

/* Read in and swap the external relocs.  */

static boolean
sparc64_elf_slurp_reloc_table (abfd, asect, symbols, dynamic)
     bfd *abfd;
     asection *asect;
     asymbol **symbols;
     boolean dynamic;
{
  struct bfd_elf_section_data * const d = elf_section_data (asect);
  Elf_Internal_Shdr *rel_hdr;
  Elf_Internal_Shdr *rel_hdr2;

  if (asect->relocation != NULL)
    return true;

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

      rel_hdr = &d->rel_hdr;
      rel_hdr2 = d->rel_hdr2;

      BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset
		  || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset));
    }
  else
    {
      /* Note that ASECT->RELOC_COUNT tends not to be accurate in this
	 case because relocations against this section may use the
	 dynamic symbol table, and in that case bfd_section_from_shdr
	 in elf.c does not update the RELOC_COUNT.  */
      if (asect->_raw_size == 0)
	return true;

      rel_hdr = &d->this_hdr;
      asect->reloc_count = NUM_SHDR_ENTRIES (rel_hdr);
      rel_hdr2 = NULL;
    }

  asect->relocation = ((arelent *)
		       bfd_alloc (abfd,
				  asect->reloc_count * 2 * sizeof (arelent)));
  if (asect->relocation == NULL)
    return false;

  /* The sparc64_elf_slurp_one_reloc_table routine increments reloc_count.  */
  asect->reloc_count = 0;