bfd/elf64-sparc.c

   1 /* SPARC-specific support for 64-bit ELF
   2    Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
   3    Free Software Foundation, Inc.
   4
   5 This file is part of BFD, the Binary File Descriptor library.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #include "bfd.h"
  22 #include "sysdep.h"
  23 #include "libbfd.h"
  24 #include "elf-bfd.h"
  25 #include "opcode/sparc.h"
  26
  27 /* This is defined if one wants to build upward compatible binaries
  28    with the original sparc64-elf toolchain.  The support is kept in for
  29    now but is turned off by default.  dje 970930  */
  30 /*#define SPARC64_OLD_RELOCS*/
  31
  32 #include "elf/sparc.h"
  33
  34 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value.  */
  35 #define MINUS_ONE (~ (bfd_vma) 0)
  36
  37 static struct bfd_link_hash_table * sparc64_elf_bfd_link_hash_table_create
  38   PARAMS ((bfd *));
  39 static bfd_reloc_status_type init_insn_reloc
  40   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *,
  41            bfd *, bfd_vma *, bfd_vma *));
  42 static reloc_howto_type *sparc64_elf_reloc_type_lookup
  43   PARAMS ((bfd *, bfd_reloc_code_real_type));
  44 static void sparc64_elf_info_to_howto
  45   PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
  46
  47 static void sparc64_elf_build_plt
  48   PARAMS ((bfd *, unsigned char *, int));
  49 static bfd_vma sparc64_elf_plt_entry_offset
  50   PARAMS ((bfd_vma));
  51 static bfd_vma sparc64_elf_plt_ptr_offset
  52   PARAMS ((bfd_vma, bfd_vma));
  53
  54 static boolean sparc64_elf_check_relocs
  55   PARAMS ((bfd *, struct bfd_link_info *, asection *sec,
  56            const Elf_Internal_Rela *));
  57 static boolean sparc64_elf_adjust_dynamic_symbol
  58   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
  59 static boolean sparc64_elf_size_dynamic_sections
  60   PARAMS ((bfd *, struct bfd_link_info *));
  61 static int sparc64_elf_get_symbol_type
  62   PARAMS (( Elf_Internal_Sym *, int));
  63 static boolean sparc64_elf_add_symbol_hook
  64   PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
  65            const char **, flagword *, asection **, bfd_vma *));
  66 static boolean sparc64_elf_output_arch_syms
  67   PARAMS ((bfd *, struct bfd_link_info *, PTR,
  68            boolean (*) (PTR, const char *, Elf_Internal_Sym *, asection *)));
  69 static void sparc64_elf_symbol_processing
  70   PARAMS ((bfd *, asymbol *));
  71
  72 static boolean sparc64_elf_copy_private_bfd_data
  73   PARAMS ((bfd *, bfd *));
  74 static boolean sparc64_elf_merge_private_bfd_data
  75   PARAMS ((bfd *, bfd *));
  76
  77 static const char *sparc64_elf_print_symbol_all
  78   PARAMS ((bfd *, PTR, asymbol *));
  79 static boolean sparc64_elf_relax_section
  80   PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
  81 static boolean sparc64_elf_relocate_section
  82   PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
  83            Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
  84 static boolean sparc64_elf_finish_dynamic_symbol
  85   PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
  86            Elf_Internal_Sym *));
  87 static boolean sparc64_elf_finish_dynamic_sections
  88   PARAMS ((bfd *, struct bfd_link_info *));
  89 static boolean sparc64_elf_object_p PARAMS ((bfd *));
  90 static long sparc64_elf_get_reloc_upper_bound PARAMS ((bfd *, asection *));
  91 static long sparc64_elf_get_dynamic_reloc_upper_bound PARAMS ((bfd *));
  92 static boolean sparc64_elf_slurp_one_reloc_table
  93   PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, asymbol **, boolean));
  94 static boolean sparc64_elf_slurp_reloc_table
  95   PARAMS ((bfd *, asection *, asymbol **, boolean));
  96 static long sparc64_elf_canonicalize_dynamic_reloc
  97   PARAMS ((bfd *, arelent **, asymbol **));
  98 static void sparc64_elf_write_relocs PARAMS ((bfd *, asection *, PTR));
  99 static enum elf_reloc_type_class sparc64_elf_reloc_type_class PARAMS ((int));
 100 \f
 101 /* The relocation "howto" table.  */
 102
 103 static bfd_reloc_status_type sparc_elf_notsup_reloc
 104   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
 105 static bfd_reloc_status_type sparc_elf_wdisp16_reloc
 106   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
 107 static bfd_reloc_status_type sparc_elf_hix22_reloc
 108   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
 109 static bfd_reloc_status_type sparc_elf_lox10_reloc
 110   PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
 111
 112 static reloc_howto_type sparc64_elf_howto_table[] =
 113 {
 114   HOWTO(R_SPARC_NONE,      0,0, 0,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_NONE",    false,0,0x00000000,true),
 115   HOWTO(R_SPARC_8,         0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_8",       false,0,0x000000ff,true),
 116   HOWTO(R_SPARC_16,        0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_16",      false,0,0x0000ffff,true),
 117   HOWTO(R_SPARC_32,        0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_32",      false,0,0xffffffff,true),
 118   HOWTO(R_SPARC_DISP8,     0,0, 8,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_DISP8",   false,0,0x000000ff,true),
 119   HOWTO(R_SPARC_DISP16,    0,1,16,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_DISP16",  false,0,0x0000ffff,true),
 120   HOWTO(R_SPARC_DISP32,    0,2,32,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_DISP32",  false,0,0x00ffffff,true),
 121   HOWTO(R_SPARC_WDISP30,   2,2,30,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_WDISP30", false,0,0x3fffffff,true),
 122   HOWTO(R_SPARC_WDISP22,   2,2,22,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_WDISP22", false,0,0x003fffff,true),
 123   HOWTO(R_SPARC_HI22,     10,2,22,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_HI22",    false,0,0x003fffff,true),
 124   HOWTO(R_SPARC_22,        0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_22",      false,0,0x003fffff,true),
 125   HOWTO(R_SPARC_13,        0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_13",      false,0,0x00001fff,true),
 126   HOWTO(R_SPARC_LO10,      0,2,10,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_LO10",    false,0,0x000003ff,true),
 127   HOWTO(R_SPARC_GOT10,     0,2,10,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_GOT10",   false,0,0x000003ff,true),
 128   HOWTO(R_SPARC_GOT13,     0,2,13,false,0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_GOT13",   false,0,0x00001fff,true),
 129   HOWTO(R_SPARC_GOT22,    10,2,22,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_GOT22",   false,0,0x003fffff,true),
 130   HOWTO(R_SPARC_PC10,      0,2,10,true, 0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_PC10",    false,0,0x000003ff,true),
 131   HOWTO(R_SPARC_PC22,     10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_PC22",    false,0,0x003fffff,true),
 132   HOWTO(R_SPARC_WPLT30,    2,2,30,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_WPLT30",  false,0,0x3fffffff,true),
 133   HOWTO(R_SPARC_COPY,      0,0,00,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_COPY",    false,0,0x00000000,true),
 134   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),
 135   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),
 136   HOWTO(R_SPARC_RELATIVE,  0,0,00,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_RELATIVE",false,0,0x00000000,true),
 137   HOWTO(R_SPARC_UA32,      0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_UA32",    false,0,0xffffffff,true),
 138 #ifndef SPARC64_OLD_RELOCS
 139   /* These aren't implemented yet.  */
 140   HOWTO(R_SPARC_PLT32,     0,0,00,false,0,complain_overflow_dont,    sparc_elf_notsup_reloc, "R_SPARC_PLT32",    false,0,0x00000000,true),
 141   HOWTO(R_SPARC_HIPLT22,   0,0,00,false,0,complain_overflow_dont,    sparc_elf_notsup_reloc, "R_SPARC_HIPLT22",  false,0,0x00000000,true),
 142   HOWTO(R_SPARC_LOPLT10,   0,0,00,false,0,complain_overflow_dont,    sparc_elf_notsup_reloc, "R_SPARC_LOPLT10",  false,0,0x00000000,true),
 143   HOWTO(R_SPARC_PCPLT32,   0,0,00,false,0,complain_overflow_dont,    sparc_elf_notsup_reloc, "R_SPARC_PCPLT32",  false,0,0x00000000,true),
 144   HOWTO(R_SPARC_PCPLT22,   0,0,00,false,0,complain_overflow_dont,    sparc_elf_notsup_reloc, "R_SPARC_PCPLT22",  false,0,0x00000000,true),
 145   HOWTO(R_SPARC_PCPLT10,   0,0,00,false,0,complain_overflow_dont,    sparc_elf_notsup_reloc, "R_SPARC_PCPLT10",  false,0,0x00000000,true),
 146 #endif
 147   HOWTO(R_SPARC_10,        0,2,10,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_10",      false,0,0x000003ff,true),
 148   HOWTO(R_SPARC_11,        0,2,11,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_11",      false,0,0x000007ff,true),
 149   HOWTO(R_SPARC_64,        0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_64",      false,0,MINUS_ONE, true),
 150   HOWTO(R_SPARC_OLO10,     0,2,13,false,0,complain_overflow_signed,  sparc_elf_notsup_reloc, "R_SPARC_OLO10",   false,0,0x00001fff,true),
 151   HOWTO(R_SPARC_HH22,     42,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc,  "R_SPARC_HH22",    false,0,0x003fffff,true),
 152   HOWTO(R_SPARC_HM10,     32,2,10,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_HM10",    false,0,0x000003ff,true),
 153   HOWTO(R_SPARC_LM22,     10,2,22,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_LM22",    false,0,0x003fffff,true),
 154   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),
 155   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),
 156   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),
 157   HOWTO(R_SPARC_WDISP16,   2,2,16,true, 0,complain_overflow_signed,  sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", false,0,0x00000000,true),
 158   HOWTO(R_SPARC_WDISP19,   2,2,19,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_WDISP19", false,0,0x0007ffff,true),
 159   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),
 160   HOWTO(R_SPARC_7,         0,2, 7,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_7",       false,0,0x0000007f,true),
 161   HOWTO(R_SPARC_5,         0,2, 5,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_5",       false,0,0x0000001f,true),
 162   HOWTO(R_SPARC_6,         0,2, 6,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_6",       false,0,0x0000003f,true),
 163   HOWTO(R_SPARC_DISP64,    0,4,64,true, 0,complain_overflow_signed,  bfd_elf_generic_reloc,  "R_SPARC_DISP64",  false,0,MINUS_ONE, true),
 164   HOWTO(R_SPARC_PLT64,     0,4,64,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_PLT64",   false,0,MINUS_ONE, false),
 165   HOWTO(R_SPARC_HIX22,     0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_hix22_reloc,  "R_SPARC_HIX22",   false,0,MINUS_ONE, false),
 166   HOWTO(R_SPARC_LOX10,     0,4, 0,false,0,complain_overflow_dont,    sparc_elf_lox10_reloc,  "R_SPARC_LOX10",   false,0,MINUS_ONE, false),
 167   HOWTO(R_SPARC_H44,      22,2,22,false,0,complain_overflow_unsigned,bfd_elf_generic_reloc,  "R_SPARC_H44",     false,0,0x003fffff,false),
 168   HOWTO(R_SPARC_M44,      12,2,10,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_M44",     false,0,0x000003ff,false),
 169   HOWTO(R_SPARC_L44,       0,2,13,false,0,complain_overflow_dont,    bfd_elf_generic_reloc,  "R_SPARC_L44",     false,0,0x00000fff,false),
 170   HOWTO(R_SPARC_REGISTER,  0,4, 0,false,0,complain_overflow_bitfield,sparc_elf_notsup_reloc, "R_SPARC_REGISTER",false,0,MINUS_ONE, false),
 171   HOWTO(R_SPARC_UA64,        0,4,64,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_UA64",      false,0,MINUS_ONE, true),
 172   HOWTO(R_SPARC_UA16,        0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,  "R_SPARC_UA16",      false,0,0x0000ffff,true)
 173 };
 174
 175 struct elf_reloc_map {
 176   bfd_reloc_code_real_type bfd_reloc_val;
 177   unsigned char elf_reloc_val;
 178 };
 179
 180 static const struct elf_reloc_map sparc_reloc_map[] =
 181 {
 182   { BFD_RELOC_NONE, R_SPARC_NONE, },
 183   { BFD_RELOC_16, R_SPARC_16, },
 184   { BFD_RELOC_8, R_SPARC_8 },
 185   { BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
 186   { BFD_RELOC_CTOR, R_SPARC_64 },
 187   { BFD_RELOC_32, R_SPARC_32 },
 188   { BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
 189   { BFD_RELOC_HI22, R_SPARC_HI22 },
 190   { BFD_RELOC_LO10, R_SPARC_LO10, },
 191   { BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
 192   { BFD_RELOC_SPARC22, R_SPARC_22 },
 193   { BFD_RELOC_SPARC13, R_SPARC_13 },
 194   { BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
 195   { BFD_RELOC_SPARC_GOT13, R_SPARC_GOT13 },
 196   { BFD_RELOC_SPARC_GOT22, R_SPARC_GOT22 },
 197   { BFD_RELOC_SPARC_PC10, R_SPARC_PC10 },
 198   { BFD_RELOC_SPARC_PC22, R_SPARC_PC22 },
 199   { BFD_RELOC_SPARC_WPLT30, R_SPARC_WPLT30 },
 200   { BFD_RELOC_SPARC_COPY, R_SPARC_COPY },
 201   { BFD_RELOC_SPARC_GLOB_DAT, R_SPARC_GLOB_DAT },
 202   { BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
 203   { BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
 204   { BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
 205   { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 },
 206   { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 },
 207   { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 },
 208   { BFD_RELOC_SPARC_10, R_SPARC_10 },
 209   { BFD_RELOC_SPARC_11, R_SPARC_11 },
 210   { BFD_RELOC_SPARC_64, R_SPARC_64 },
 211   { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 },
 212   { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 },
 213   { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 },
 214   { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 },
 215   { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 },
 216   { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 },
 217   { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 },
 218   { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 },
 219   { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 },
 220   { BFD_RELOC_SPARC_7, R_SPARC_7 },
 221   { BFD_RELOC_SPARC_5, R_SPARC_5 },
 222   { BFD_RELOC_SPARC_6, R_SPARC_6 },
 223   { BFD_RELOC_SPARC_DISP64, R_SPARC_DISP64 },
 224   { BFD_RELOC_SPARC_PLT64, R_SPARC_PLT64 },
 225   { BFD_RELOC_SPARC_HIX22, R_SPARC_HIX22 },
 226   { BFD_RELOC_SPARC_LOX10, R_SPARC_LOX10 },
 227   { BFD_RELOC_SPARC_H44, R_SPARC_H44 },
 228   { BFD_RELOC_SPARC_M44, R_SPARC_M44 },
 229   { BFD_RELOC_SPARC_L44, R_SPARC_L44 },
 230   { BFD_RELOC_SPARC_REGISTER, R_SPARC_REGISTER }
 231 };
 232
 233 static reloc_howto_type *
 234 sparc64_elf_reloc_type_lookup (abfd, code)
 235      bfd *abfd ATTRIBUTE_UNUSED;
 236      bfd_reloc_code_real_type code;
 237 {
 238   unsigned int i;
 239   for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++)
 240     {
 241       if (sparc_reloc_map[i].bfd_reloc_val == code)
 242         return &sparc64_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val];
 243     }
 244   return 0;
 245 }
 246
 247 static void
 248 sparc64_elf_info_to_howto (abfd, cache_ptr, dst)
 249      bfd *abfd ATTRIBUTE_UNUSED;
 250      arelent *cache_ptr;
 251      Elf64_Internal_Rela *dst;
 252 {
 253   BFD_ASSERT (ELF64_R_TYPE_ID (dst->r_info) < (unsigned int) R_SPARC_max_std);
 254   cache_ptr->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (dst->r_info)];
 255 }
 256 \f
 257 /* Due to the way how we handle R_SPARC_OLO10, each entry in a SHT_RELA
 258    section can represent up to two relocs, we must tell the user to allocate
 259    more space.  */
 260
 261 static long
 262 sparc64_elf_get_reloc_upper_bound (abfd, sec)
 263      bfd *abfd ATTRIBUTE_UNUSED;
 264      asection *sec;
 265 {
 266   return (sec->reloc_count * 2 + 1) * sizeof (arelent *);
 267 }
 268
 269 static long
 270 sparc64_elf_get_dynamic_reloc_upper_bound (abfd)
 271      bfd *abfd;
 272 {
 273   return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 2;
 274 }
 275
 276 /* Read  relocations for ASECT from REL_HDR.  There are RELOC_COUNT of
 277    them.  We cannot use generic elf routines for this,  because R_SPARC_OLO10
 278    has secondary addend in ELF64_R_TYPE_DATA.  We handle it as two relocations
 279    for the same location,  R_SPARC_LO10 and R_SPARC_13.  */
 280
 281 static boolean
 282 sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols, dynamic)
 283      bfd *abfd;
 284      asection *asect;
 285      Elf_Internal_Shdr *rel_hdr;
 286      asymbol **symbols;
 287      boolean dynamic;
 288 {
 289   PTR allocated = NULL;
 290   bfd_byte *native_relocs;
 291   arelent *relent;
 292   unsigned int i;
 293   int entsize;
 294   bfd_size_type count;
 295   arelent *relents;
 296
 297   allocated = (PTR) bfd_malloc (rel_hdr->sh_size);
 298   if (allocated == NULL)
 299     goto error_return;
 300
 301   if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0
 302       || bfd_bread (allocated, rel_hdr->sh_size, abfd) != rel_hdr->sh_size)
 303     goto error_return;
 304
 305   native_relocs = (bfd_byte *) allocated;
 306
 307   relents = asect->relocation + asect->reloc_count;
 308
 309   entsize = rel_hdr->sh_entsize;
 310   BFD_ASSERT (entsize == sizeof (Elf64_External_Rela));
 311
 312   count = rel_hdr->sh_size / entsize;
 313
 314   for (i = 0, relent = relents; i < count;
 315        i++, relent++, native_relocs += entsize)
 316     {
 317       Elf_Internal_Rela rela;
 318
 319       bfd_elf64_swap_reloca_in (abfd, (Elf64_External_Rela *) native_relocs, &rela);
 320
 321       /* The address of an ELF reloc is section relative for an object
 322          file, and absolute for an executable file or shared library.
 323          The address of a normal BFD reloc is always section relative,
 324          and the address of a dynamic reloc is absolute..  */
 325       if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic)
 326         relent->address = rela.r_offset;
 327       else
 328         relent->address = rela.r_offset - asect->vma;
 329
 330       if (ELF64_R_SYM (rela.r_info) == 0)
 331         relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
 332       else
 333         {
 334           asymbol **ps, *s;
 335
 336           ps = symbols + ELF64_R_SYM (rela.r_info) - 1;
 337           s = *ps;
 338
 339           /* Canonicalize ELF section symbols.  FIXME: Why?  */
 340           if ((s->flags & BSF_SECTION_SYM) == 0)
 341             relent->sym_ptr_ptr = ps;
 342           else
 343             relent->sym_ptr_ptr = s->section->symbol_ptr_ptr;
 344         }
 345
 346       relent->addend = rela.r_addend;
 347
 348       BFD_ASSERT (ELF64_R_TYPE_ID (rela.r_info) < (unsigned int) R_SPARC_max_std);
 349       if (ELF64_R_TYPE_ID (rela.r_info) == R_SPARC_OLO10)
 350         {
 351           relent->howto = &sparc64_elf_howto_table[R_SPARC_LO10];
 352           relent[1].address = relent->address;
 353           relent++;
 354           relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
 355           relent->addend = ELF64_R_TYPE_DATA (rela.r_info);
 356           relent->howto = &sparc64_elf_howto_table[R_SPARC_13];
 357         }
 358       else
 359         relent->howto = &sparc64_elf_howto_table[ELF64_R_TYPE_ID (rela.r_info)];
 360     }
 361
 362   asect->reloc_count += relent - relents;
 363
 364   if (allocated != NULL)
 365     free (allocated);
 366
 367   return true;
 368
 369  error_return:
 370   if (allocated != NULL)
 371     free (allocated);
 372   return false;
 373 }
 374
 375 /* Read in and swap the external relocs.  */
 376
 377 static boolean
 378 sparc64_elf_slurp_reloc_table (abfd, asect, symbols, dynamic)
 379      bfd *abfd;
 380      asection *asect;
 381      asymbol **symbols;
 382      boolean dynamic;
 383 {
 384   struct bfd_elf_section_data * const d = elf_section_data (asect);
 385   Elf_Internal_Shdr *rel_hdr;
 386   Elf_Internal_Shdr *rel_hdr2;
 387   bfd_size_type amt;
 388
 389   if (asect->relocation != NULL)
 390     return true;
 391
 392   if (! dynamic)
 393     {
 394       if ((asect->flags & SEC_RELOC) == 0
 395           || asect->reloc_count == 0)
 396         return true;
 397
 398       rel_hdr = &d->rel_hdr;
 399       rel_hdr2 = d->rel_hdr2;
 400
 401       BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset
 402                   || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset));
 403     }
 404   else
 405     {
 406       /* Note that ASECT->RELOC_COUNT tends not to be accurate in this
 407          case because relocations against this section may use the
 408          dynamic symbol table, and in that case bfd_section_from_shdr
 409          in elf.c does not update the RELOC_COUNT.  */
 410       if (asect->_raw_size == 0)
 411         return true;
 412
 413       rel_hdr = &d->this_hdr;
 414       asect->reloc_count = NUM_SHDR_ENTRIES (rel_hdr);
 415       rel_hdr2 = NULL;
 416     }
 417
 418   amt = asect->reloc_count;
 419   amt *= 2 * sizeof (arelent);
 420   asect->relocation = (arelent *) bfd_alloc (abfd, amt);
 421   if (asect->relocation == NULL)
 422     return false;
 423
 424   /* The sparc64_elf_slurp_one_reloc_table routine increments reloc_count.  */
 425   asect->reloc_count = 0;
 426
 427   if (!sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr, symbols,
 428                                           dynamic))
 429     return false;
 430
 431   if (rel_hdr2
 432       && !sparc64_elf_slurp_one_reloc_table (abfd, asect, rel_hdr2, symbols,
 433                                              dynamic))
 434     return false;
 435
 436   return true;
 437 }
 438
 439 /* Canonicalize the dynamic relocation entries.  Note that we return
 440    the dynamic relocations as a single block, although they are
 441    actually associated with particular sections; the interface, which
 442    was designed for SunOS style shared libraries, expects that there
 443    is only one set of dynamic relocs.  Any section that was actually
 444    installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
 445    the dynamic symbol table, is considered to be a dynamic reloc
 446    section.  */
 447
 448 static long
 449 sparc64_elf_canonicalize_dynamic_reloc (abfd, storage, syms)
 450      bfd *abfd;
 451      arelent **storage;
 452      asymbol **syms;
 453 {
 454   asection *s;
 455   long ret;
 456
 457   if (elf_dynsymtab (abfd) == 0)
 458     {
 459       bfd_set_error (bfd_error_invalid_operation);
 460       return -1;
 461     }
 462
 463   ret = 0;
 464   for (s = abfd->sections; s != NULL; s = s->next)
 465     {
 466       if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
 467           && (elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
 468         {
 469           arelent *p;
 470           long count, i;
 471
 472           if (! sparc64_elf_slurp_reloc_table (abfd, s, syms, true))
 473             return -1;
 474           count = s->reloc_count;
 475           p = s->relocation;
 476           for (i = 0; i < count; i++)
 477             *storage++ = p++;
 478           ret += count;
 479         }
 480     }
 481
 482   *storage = NULL;
 483
 484   return ret;
 485 }
 486
 487 /* Write out the relocs.  */
 488
 489 static void
 490 sparc64_elf_write_relocs (abfd, sec, data)
 491      bfd *abfd;
 492      asection *sec;
 493      PTR data;
 494 {
 495   boolean *failedp = (boolean *) data;
 496   Elf_Internal_Shdr *rela_hdr;
 497   Elf64_External_Rela *outbound_relocas, *src_rela;
 498   unsigned int idx, count;
 499   asymbol *last_sym = 0;
 500   int last_sym_idx = 0;
 501
 502   /* If we have already failed, don't do anything.  */
 503   if (*failedp)
 504     return;
 505
 506   if ((sec->flags & SEC_RELOC) == 0)
 507     return;
 508
 509   /* The linker backend writes the relocs out itself, and sets the
 510      reloc_count field to zero to inhibit writing them here.  Also,
 511      sometimes the SEC_RELOC flag gets set even when there aren't any
 512      relocs.  */
 513   if (sec->reloc_count == 0)
 514     return;
 515
 516   /* We can combine two relocs that refer to the same address
 517      into R_SPARC_OLO10 if first one is R_SPARC_LO10 and the
 518      latter is R_SPARC_13 with no associated symbol.  */
 519   count = 0;
 520   for (idx = 0; idx < sec->reloc_count; idx++)
 521     {
 522       bfd_vma addr;
 523
 524       ++count;
 525
 526       addr = sec->orelocation[idx]->address;
 527       if (sec->orelocation[idx]->howto->type == R_SPARC_LO10
 528           && idx < sec->reloc_count - 1)
 529         {
 530           arelent *r = sec->orelocation[idx + 1];
 531
 532           if (r->howto->type == R_SPARC_13
 533               && r->address == addr
 534               && bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
 535               && (*r->sym_ptr_ptr)->value == 0)
 536             ++idx;
 537         }
 538     }
 539
 540   rela_hdr = &elf_section_data (sec)->rel_hdr;
 541
 542   rela_hdr->sh_size = rela_hdr->sh_entsize * count;
 543   rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size);
 544   if (rela_hdr->contents == NULL)
 545     {
 546       *failedp = true;
 547       return;
 548     }
 549
 550   /* Figure out whether the relocations are RELA or REL relocations.  */
 551   if (rela_hdr->sh_type != SHT_RELA)
 552     abort ();
 553
 554   /* orelocation has the data, reloc_count has the count...  */
 555   outbound_relocas = (Elf64_External_Rela *) rela_hdr->contents;
 556   src_rela = outbound_relocas;
 557
 558   for (idx = 0; idx < sec->reloc_count; idx++)
 559     {
 560       Elf_Internal_Rela dst_rela;
 561       arelent *ptr;
 562       asymbol *sym;
 563       int n;
 564
 565       ptr = sec->orelocation[idx];
 566
 567       /* The address of an ELF reloc is section relative for an object
 568          file, and absolute for an executable file or shared library.
 569          The address of a BFD reloc is always section relative.  */
 570       if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
 571         dst_rela.r_offset = ptr->address;
 572       else
 573         dst_rela.r_offset = ptr->address + sec->vma;
 574
 575       sym = *ptr->sym_ptr_ptr;
 576       if (sym == last_sym)
 577         n = last_sym_idx;
 578       else if (bfd_is_abs_section (sym->section) && sym->value == 0)
 579         n = STN_UNDEF;
 580       else
 581         {
 582           last_sym = sym;
 583           n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
 584           if (n < 0)
 585             {
 586               *failedp = true;
 587               return;
 588             }
 589           last_sym_idx = n;
 590         }
 591
 592       if ((*ptr->sym_ptr_ptr)->the_bfd != NULL
 593           && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
 594           && ! _bfd_elf_validate_reloc (abfd, ptr))
 595         {
 596           *failedp = true;
 597           return;
 598         }
 599
 600       if (ptr->howto->type == R_SPARC_LO10
 601           && idx < sec->reloc_count - 1)
 602         {
 603           arelent *r = sec->orelocation[idx + 1];
 604
 605           if (r->howto->type == R_SPARC_13
 606               && r->address == ptr->address
 607               && bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
 608               && (*r->sym_ptr_ptr)->value == 0)
 609             {
 610               idx++;
 611               dst_rela.r_info
 612                 = ELF64_R_INFO (n, ELF64_R_TYPE_INFO (r->addend,
 613                                                       R_SPARC_OLO10));
 614             }
 615           else
 616             dst_rela.r_info = ELF64_R_INFO (n, R_SPARC_LO10);
 617         }
 618       else
 619         dst_rela.r_info = ELF64_R_INFO (n, ptr->howto->type);
 620
 621       dst_rela.r_addend = ptr->addend;
 622       bfd_elf64_swap_reloca_out (abfd, &dst_rela, src_rela);
 623       ++src_rela;
 624     }
 625 }
 626 \f
 627 /* Sparc64 ELF linker hash table.  */
 628
 629 struct sparc64_elf_app_reg
 630 {
 631   unsigned char bind;
 632   unsigned short shndx;
 633   bfd *abfd;
 634   char *name;
 635 };
 636
 637 struct sparc64_elf_link_hash_table
 638 {
 639   struct elf_link_hash_table root;
 640
 641   struct sparc64_elf_app_reg app_regs [4];
 642 };
 643
 644 /* Get the Sparc64 ELF linker hash table from a link_info structure.  */
 645
 646 #define sparc64_elf_hash_table(p) \
 647   ((struct sparc64_elf_link_hash_table *) ((p)->hash))
 648
 649 /* Create a Sparc64 ELF linker hash table.  */
 650
 651 static struct bfd_link_hash_table *
 652 sparc64_elf_bfd_link_hash_table_create (abfd)
 653      bfd *abfd;
 654 {
 655   struct sparc64_elf_link_hash_table *ret;
 656   bfd_size_type amt = sizeof (struct sparc64_elf_link_hash_table);
 657
 658   ret = (struct sparc64_elf_link_hash_table *) bfd_zalloc (abfd, amt);
 659   if (ret == (struct sparc64_elf_link_hash_table *) NULL)
 660     return NULL;
 661
 662   if (! _bfd_elf_link_hash_table_init (&ret->root, abfd,
 663                                        _bfd_elf_link_hash_newfunc))
 664     {
 665       bfd_release (abfd, ret);
 666       return NULL;
 667     }
 668
 669   return &ret->root.root;
 670 }
 671 \f
 672 /* Utility for performing the standard initial work of an instruction
 673    relocation.
 674    *PRELOCATION will contain the relocated item.
 675    *PINSN will contain the instruction from the input stream.
 676    If the result is `bfd_reloc_other' the caller can continue with
 677    performing the relocation.  Otherwise it must stop and return the
 678    value to its caller.  */
 679
 680 static bfd_reloc_status_type
 681 init_insn_reloc (abfd,
 682                  reloc_entry,
 683                  symbol,
 684                  data,
 685                  input_section,
 686                  output_bfd,
 687                  prelocation,
 688                  pinsn)
 689      bfd *abfd;
 690      arelent *reloc_entry;
 691      asymbol *symbol;
 692      PTR data;
 693      asection *input_section;
 694      bfd *output_bfd;
 695      bfd_vma *prelocation;
 696      bfd_vma *pinsn;
 697 {
 698   bfd_vma relocation;
 699   reloc_howto_type *howto = reloc_entry->howto;
 700
 701   if (output_bfd != (bfd *) NULL
 702       && (symbol->flags & BSF_SECTION_SYM) == 0
 703       && (! howto->partial_inplace
 704           || reloc_entry->addend == 0))
 705     {
 706       reloc_entry->address += input_section->output_offset;
 707       return bfd_reloc_ok;
 708     }
 709
 710   /* This works because partial_inplace == false.  */
 711   if (output_bfd != NULL)
 712     return bfd_reloc_continue;
 713
 714   if (reloc_entry->address > input_section->_cooked_size)
 715     return bfd_reloc_outofrange;
 716
 717   relocation = (symbol->value
 718                 + symbol->section->output_section->vma
 719                 + symbol->section->output_offset);
 720   relocation += reloc_entry->addend;
 721   if (howto->pc_relative)
 722     {
 723       relocation -= (input_section->output_section->vma
 724                      + input_section->output_offset);
 725       relocation -= reloc_entry->address;
 726     }
 727
 728   *prelocation = relocation;
 729   *pinsn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
 730   return bfd_reloc_other;
 731 }
 732
 733 /* For unsupported relocs.  */
 734
 735 static bfd_reloc_status_type
 736 sparc_elf_notsup_reloc (abfd,
 737                         reloc_entry,
 738                         symbol,
 739                         data,
 740                         input_section,
 741                         output_bfd,
 742                         error_message)
 743      bfd *abfd ATTRIBUTE_UNUSED;
 744      arelent *reloc_entry ATTRIBUTE_UNUSED;
 745      asymbol *symbol ATTRIBUTE_UNUSED;
 746      PTR data ATTRIBUTE_UNUSED;
 747      asection *input_section ATTRIBUTE_UNUSED;
 748      bfd *output_bfd ATTRIBUTE_UNUSED;
 749      char **error_message ATTRIBUTE_UNUSED;
 750 {
 751   return bfd_reloc_notsupported;
 752 }
 753
 754 /* Handle the WDISP16 reloc.  */
 755
 756 static bfd_reloc_status_type
 757 sparc_elf_wdisp16_reloc (abfd, reloc_entry, symbol, data, input_section,
 758                          output_bfd, error_message)
 759      bfd *abfd;
 760      arelent *reloc_entry;
 761      asymbol *symbol;
 762      PTR data;
 763      asection *input_section;
 764      bfd *output_bfd;
 765      char **error_message ATTRIBUTE_UNUSED;
 766 {
 767   bfd_vma relocation;
 768   bfd_vma insn;
 769   bfd_reloc_status_type status;
 770
 771   status = init_insn_reloc (abfd, reloc_entry, symbol, data,
 772                             input_section, output_bfd, &relocation, &insn);
 773   if (status != bfd_reloc_other)
 774     return status;
 775
 776   insn &= ~ (bfd_vma) 0x303fff;
 777   insn |= (((relocation >> 2) & 0xc000) << 6) | ((relocation >> 2) & 0x3fff);
 778   bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
 779
 780   if ((bfd_signed_vma) relocation < - 0x40000
 781       || (bfd_signed_vma) relocation > 0x3ffff)
 782     return bfd_reloc_overflow;
 783   else
 784     return bfd_reloc_ok;
 785 }
 786
 787 /* Handle the HIX22 reloc.  */
 788
 789 static bfd_reloc_status_type
 790 sparc_elf_hix22_reloc (abfd,
 791                        reloc_entry,
 792                        symbol,
 793                        data,
 794                        input_section,
 795                        output_bfd,
 796                        error_message)
 797      bfd *abfd;
 798      arelent *reloc_entry;
 799      asymbol *symbol;
 800      PTR data;
 801      asection *input_section;
 802      bfd *output_bfd;
 803      char **error_message ATTRIBUTE_UNUSED;
 804 {
 805   bfd_vma relocation;
 806   bfd_vma insn;
 807   bfd_reloc_status_type status;
 808
 809   status = init_insn_reloc (abfd, reloc_entry, symbol, data,
 810                             input_section, output_bfd, &relocation, &insn);
 811   if (status != bfd_reloc_other)
 812     return status;
 813
 814   relocation ^= MINUS_ONE;
 815   insn = (insn &~ (bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
 816   bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
 817
 818   if ((relocation & ~ (bfd_vma) 0xffffffff) != 0)
 819     return bfd_reloc_overflow;
 820   else
 821     return bfd_reloc_ok;
 822 }
 823
 824 /* Handle the LOX10 reloc.  */
 825
 826 static bfd_reloc_status_type
 827 sparc_elf_lox10_reloc (abfd,
 828                        reloc_entry,
 829                        symbol,
 830                        data,
 831                        input_section,
 832                        output_bfd,
 833                        error_message)
 834      bfd *abfd;
 835      arelent *reloc_entry;
 836      asymbol *symbol;
 837      PTR data;
 838      asection *input_section;
 839      bfd *output_bfd;
 840      char **error_message ATTRIBUTE_UNUSED;
 841 {
 842   bfd_vma relocation;
 843   bfd_vma insn;
 844   bfd_reloc_status_type status;
 845
 846   status = init_insn_reloc (abfd, reloc_entry, symbol, data,
 847                             input_section, output_bfd, &relocation, &insn);
 848   if (status != bfd_reloc_other)
 849     return status;
 850
 851   insn = (insn &~ (bfd_vma) 0x1fff) | 0x1c00 | (relocation & 0x3ff);
 852   bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address);
 853
 854   return bfd_reloc_ok;
 855 }
 856 \f
 857 /* PLT/GOT stuff */
 858
 859 /* Both the headers and the entries are icache aligned.  */
 860 #define PLT_ENTRY_SIZE          32
 861 #define PLT_HEADER_SIZE         (4 * PLT_ENTRY_SIZE)
 862 #define LARGE_PLT_THRESHOLD     32768
 863 #define GOT_RESERVED_ENTRIES    1
 864
 865 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/sparcv9/ld.so.1"
 866
 867 /* Fill in the .plt section.  */
 868
 869 static void
 870 sparc64_elf_build_plt (output_bfd, contents, nentries)
 871      bfd *output_bfd;
 872      unsigned char *contents;
 873      int nentries;
 874 {
 875   const unsigned int nop = 0x01000000;
 876   int i, j;
 877
 878   /* The first four entries are reserved, and are initially undefined.
 879      We fill them with `illtrap 0' to force ld.so to do something.  */
 880
 881   for (i = 0; i < PLT_HEADER_SIZE/4; ++i)
 882     bfd_put_32 (output_bfd, (bfd_vma) 0, contents+i*4);
 883
 884   /* The first 32768 entries are close enough to plt1 to get there via
 885      a straight branch.  */
 886
 887   for (i = 4; i < LARGE_PLT_THRESHOLD && i < nentries; ++i)
 888     {
 889       unsigned char *entry = contents + i * PLT_ENTRY_SIZE;
 890       unsigned int sethi, ba;
 891
 892       /* sethi (. - plt0), %g1 */
 893       sethi = 0x03000000 | (i * PLT_ENTRY_SIZE);
 894
 895       /* ba,a,pt %xcc, plt1 */
 896       ba = 0x30680000 | (((contents+PLT_ENTRY_SIZE) - (entry+4)) / 4 & 0x7ffff);
 897
 898       bfd_put_32 (output_bfd, (bfd_vma) sethi, entry);
 899       bfd_put_32 (output_bfd, (bfd_vma) ba,    entry + 4);
 900       bfd_put_32 (output_bfd, (bfd_vma) nop,   entry + 8);
 901       bfd_put_32 (output_bfd, (bfd_vma) nop,   entry + 12);
 902       bfd_put_32 (output_bfd, (bfd_vma) nop,   entry + 16);
 903       bfd_put_32 (output_bfd, (bfd_vma) nop,   entry + 20);
 904       bfd_put_32 (output_bfd, (bfd_vma) nop,   entry + 24);
 905       bfd_put_32 (output_bfd, (bfd_vma) nop,   entry + 28);
 906     }
 907
 908   /* Now the tricky bit.  Entries 32768 and higher are grouped in blocks of
 909      160: 160 entries and 160 pointers.  This is to separate code from data,
 910      which is much friendlier on the cache.  */
 911
 912   for (; i < nentries; i += 160)
 913     {
 914       int block = (i + 160 <= nentries ? 160 : nentries - i);
 915       for (j = 0; j < block; ++j)
 916         {
 917           unsigned char *entry, *ptr;
 918           unsigned int ldx;
 919
 920           entry = contents + i*PLT_ENTRY_SIZE + j*4*6;
 921           ptr = contents + i*PLT_ENTRY_SIZE + block*4*6 + j*8;
 922
 923           /* ldx [%o7 + ptr - entry+4], %g1 */
 924           ldx = 0xc25be000 | ((ptr - entry+4) & 0x1fff);
 925
 926           /* mov %o7,%g5
 927              call .+8
 928              nop
 929              ldx [%o7+P],%g1
 930              jmpl %o7+%g1,%g1
 931              mov %g5,%o7  */
 932           bfd_put_32 (output_bfd, (bfd_vma) 0x8a10000f, entry);
 933           bfd_put_32 (output_bfd, (bfd_vma) 0x40000002, entry + 4);
 934           bfd_put_32 (output_bfd, (bfd_vma) nop,        entry + 8);
 935           bfd_put_32 (output_bfd, (bfd_vma) ldx,        entry + 12);
 936           bfd_put_32 (output_bfd, (bfd_vma) 0x83c3c001, entry + 16);
 937           bfd_put_32 (output_bfd, (bfd_vma) 0x9e100005, entry + 20);
 938
 939           bfd_put_64 (output_bfd, (bfd_vma) (contents - (entry + 4)), ptr);
 940         }
 941     }
 942 }
 943
 944 /* Return the offset of a particular plt entry within the .plt section.  */
 945
 946 static bfd_vma
 947 sparc64_elf_plt_entry_offset (index)
 948      bfd_vma index;
 949 {
 950   bfd_vma block, ofs;
 951
 952   if (index < LARGE_PLT_THRESHOLD)
 953     return index * PLT_ENTRY_SIZE;
 954
 955   /* See above for details.  */
 956
 957   block = (index - LARGE_PLT_THRESHOLD) / 160;
 958   ofs = (index - LARGE_PLT_THRESHOLD) % 160;
 959
 960   return (LARGE_PLT_THRESHOLD + block * 160) * PLT_ENTRY_SIZE + ofs * 6 * 4;
 961 }
 962
 963 static bfd_vma
 964 sparc64_elf_plt_ptr_offset (index, max)
 965      bfd_vma index;
 966      bfd_vma max;
 967 {
 968   bfd_vma block, ofs, last;
 969
 970   BFD_ASSERT(index >= LARGE_PLT_THRESHOLD);
 971
 972   /* See above for details.  */
 973
 974   block = (((index - LARGE_PLT_THRESHOLD) / 160) * 160) + LARGE_PLT_THRESHOLD;
 975   ofs = index - block;
 976   if (block + 160 > max)
 977     last = (max - LARGE_PLT_THRESHOLD) % 160;
 978   else
 979     last = 160;
 980
 981   return (block * PLT_ENTRY_SIZE
 982           + last * 6*4
 983           + ofs * 8);
 984 }
 985 \f
 986 /* Look through the relocs for a section during the first phase, and
 987    allocate space in the global offset table or procedure linkage
 988    table.  */
 989
 990 static boolean
 991 sparc64_elf_check_relocs (abfd, info, sec, relocs)
 992      bfd *abfd;
 993      struct bfd_link_info *info;
 994      asection *sec;
 995      const Elf_Internal_Rela *relocs;
 996 {
 997   bfd *dynobj;
 998   Elf_Internal_Shdr *symtab_hdr;
 999   struct elf_link_hash_entry **sym_hashes;
1000   bfd_vma *local_got_offsets;
1001   const Elf_Internal_Rela *rel;
1002   const Elf_Internal_Rela *rel_end;
1003   asection *sgot;
1004   asection *srelgot;
1005   asection *sreloc;
1006
1007   if (info->relocateable || !(sec->flags & SEC_ALLOC))
1008     return true;
1009
1010   dynobj = elf_hash_table (info)->dynobj;
1011   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1012   sym_hashes = elf_sym_hashes (abfd);
1013   local_got_offsets = elf_local_got_offsets (abfd);
1014
1015   sgot = NULL;
1016   srelgot = NULL;
1017   sreloc = NULL;
1018
1019   rel_end = relocs + NUM_SHDR_ENTRIES (& elf_section_data (sec)->rel_hdr);
1020   for (rel = relocs; rel < rel_end; rel++)
1021     {
1022       unsigned long r_symndx;
1023       struct elf_link_hash_entry *h;
1024
1025       r_symndx = ELF64_R_SYM (rel->r_info);
1026       if (r_symndx < symtab_hdr->sh_info)
1027         h = NULL;
1028       else
1029         h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1030
1031       switch (ELF64_R_TYPE_ID (rel->r_info))
1032         {
1033         case R_SPARC_GOT10:
1034         case R_SPARC_GOT13:
1035         case R_SPARC_GOT22:
1036           /* This symbol requires a global offset table entry.  */
1037
1038           if (dynobj == NULL)
1039             {
1040               /* Create the .got section.  */
1041               elf_hash_table (info)->dynobj = dynobj = abfd;
1042               if (! _bfd_elf_create_got_section (dynobj, info))
1043                 return false;
1044             }
1045
1046           if (sgot == NULL)
1047             {
1048               sgot = bfd_get_section_by_name (dynobj, ".got");
1049               BFD_ASSERT (sgot != NULL);
1050             }
1051
1052           if (srelgot == NULL && (h != NULL || info->shared))
1053             {
1054               srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1055               if (srelgot == NULL)
1056                 {
1057                   srelgot = bfd_make_section (dynobj, ".rela.got");
1058                   if (srelgot == NULL
1059                       || ! bfd_set_section_flags (dynobj, srelgot,
1060                                                   (SEC_ALLOC
1061                                                    | SEC_LOAD
1062                                                    | SEC_HAS_CONTENTS
1063                                                    | SEC_IN_MEMORY
1064                                                    | SEC_LINKER_CREATED
1065                                                    | SEC_READONLY))
1066                       || ! bfd_set_section_alignment (dynobj, srelgot, 3))
1067                     return false;
1068                 }
1069             }
1070
1071           if (h != NULL)
1072             {
1073               if (h->got.offset != (bfd_vma) -1)
1074                 {
1075                   /* We have already allocated space in the .got.  */
1076                   break;
1077                 }
1078               h->got.offset = sgot->_raw_size;
1079
1080               /* Make sure this symbol is output as a dynamic symbol.  */
1081               if (h->dynindx == -1)
1082                 {
1083                   if (! bfd_elf64_link_record_dynamic_symbol (info, h))
1084                     return false;
1085                 }
1086
1087               srelgot->_raw_size += sizeof (Elf64_External_Rela);
1088             }
1089           else
1090             {
1091               /* This is a global offset table entry for a local
1092                  symbol.  */
1093               if (local_got_offsets == NULL)
1094                 {
1095                   bfd_size_type size;
1096                   register unsigned int i;
1097
1098                   size = symtab_hdr->sh_info;
1099                   size *= sizeof (bfd_vma);
1100                   local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size);
1101                   if (local_got_offsets == NULL)
1102                     return false;
1103                   elf_local_got_offsets (abfd) = local_got_offsets;
1104                   for (i = 0; i < symtab_hdr->sh_info; i++)
1105                     local_got_offsets[i] = (bfd_vma) -1;
1106                 }
1107               if (local_got_offsets[r_symndx] != (bfd_vma) -1)
1108                 {
1109                   /* We have already allocated space in the .got.  */
1110                   break;
1111                 }
1112               local_got_offsets[r_symndx] = sgot->_raw_size;
1113
1114               if (info->shared)
1115                 {
1116                   /* If we are generating a shared object, we need to
1117                      output a R_SPARC_RELATIVE reloc so that the
1118                      dynamic linker can adjust this GOT entry.  */
1119                   srelgot->_raw_size += sizeof (Elf64_External_Rela);
1120                 }
1121             }
1122
1123           sgot->_raw_size += 8;
1124
1125 #if 0
1126           /* Doesn't work for 64-bit -fPIC, since sethi/or builds
1127              unsigned numbers.  If we permit ourselves to modify
1128              code so we get sethi/xor, this could work.
1129              Question: do we consider conditionally re-enabling
1130              this for -fpic, once we know about object code models?  */
1131           /* If the .got section is more than 0x1000 bytes, we add
1132              0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
1133              bit relocations have a greater chance of working.  */
1134           if (sgot->_raw_size >= 0x1000
1135               && elf_hash_table (info)->hgot->root.u.def.value == 0)
1136             elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
1137 #endif
1138
1139           break;
1140
1141         case R_SPARC_WPLT30:
1142         case R_SPARC_PLT32:
1143         case R_SPARC_HIPLT22:
1144         case R_SPARC_LOPLT10:
1145         case R_SPARC_PCPLT32:
1146         case R_SPARC_PCPLT22:
1147         case R_SPARC_PCPLT10:
1148         case R_SPARC_PLT64:
1149           /* This symbol requires a procedure linkage table entry.  We
1150              actually build the entry in adjust_dynamic_symbol,
1151              because this might be a case of linking PIC code without
1152              linking in any dynamic objects, in which case we don't
1153              need to generate a procedure linkage table after all.  */
1154
1155           if (h == NULL)
1156             {
1157               /* It does not make sense to have a procedure linkage
1158                  table entry for a local symbol.  */
1159               bfd_set_error (bfd_error_bad_value);
1160               return false;
1161             }
1162
1163           /* Make sure this symbol is output as a dynamic symbol.  */
1164           if (h->dynindx == -1)
1165             {
1166               if (! bfd_elf64_link_record_dynamic_symbol (info, h))
1167                 return false;
1168             }
1169
1170           h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1171           break;
1172
1173         case R_SPARC_PC10:
1174         case R_SPARC_PC22:
1175         case R_SPARC_PC_HH22:
1176         case R_SPARC_PC_HM10:
1177         case R_SPARC_PC_LM22:
1178           if (h != NULL
1179               && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1180             break;
1181           /* Fall through.  */
1182         case R_SPARC_DISP8:
1183         case R_SPARC_DISP16:
1184         case R_SPARC_DISP32:
1185         case R_SPARC_DISP64:
1186         case R_SPARC_WDISP30:
1187         case R_SPARC_WDISP22:
1188         case R_SPARC_WDISP19:
1189         case R_SPARC_WDISP16:
1190           if (h == NULL)
1191             break;
1192           /* Fall through.  */
1193         case R_SPARC_8:
1194         case R_SPARC_16:
1195         case R_SPARC_32:
1196         case R_SPARC_HI22:
1197         case R_SPARC_22:
1198         case R_SPARC_13:
1199         case R_SPARC_LO10:
1200         case R_SPARC_UA32:
1201         case R_SPARC_10:
1202         case R_SPARC_11:
1203         case R_SPARC_64:
1204         case R_SPARC_OLO10:
1205         case R_SPARC_HH22:
1206         case R_SPARC_HM10:
1207         case R_SPARC_LM22:
1208         case R_SPARC_7:
1209         case R_SPARC_5:
1210         case R_SPARC_6:
1211         case R_SPARC_HIX22:
1212         case R_SPARC_LOX10:
1213         case R_SPARC_H44:
1214         case R_SPARC_M44:
1215         case R_SPARC_L44:
1216         case R_SPARC_UA64:
1217         case R_SPARC_UA16:
1218           /* When creating a shared object, we must copy these relocs
1219              into the output file.  We create a reloc section in
1220              dynobj and make room for the reloc.
1221
1222              But don't do this for debugging sections -- this shows up
1223              with DWARF2 -- first because they are not loaded, and
1224              second because DWARF sez the debug info is not to be
1225              biased by the load address.  */
1226           if (info->shared && (sec->flags & SEC_ALLOC))
1227             {
1228               if (sreloc == NULL)
1229                 {
1230                   const char *name;
1231
1232                   name = (bfd_elf_string_from_elf_section
1233                           (abfd,
1234                            elf_elfheader (abfd)->e_shstrndx,
1235                            elf_section_data (sec)->rel_hdr.sh_name));
1236                   if (name == NULL)
1237                     return false;
1238
1239                   BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1240                               && strcmp (bfd_get_section_name (abfd, sec),
1241                                          name + 5) == 0);
1242
1243                   sreloc = bfd_get_section_by_name (dynobj, name);
1244                   if (sreloc == NULL)
1245                     {
1246                       flagword flags;
1247
1248                       sreloc = bfd_make_section (dynobj, name);
1249                       flags = (SEC_HAS_CONTENTS | SEC_READONLY
1250                                | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1251                       if ((sec->flags & SEC_ALLOC) != 0)
1252                         flags |= SEC_ALLOC | SEC_LOAD;
1253                       if (sreloc == NULL
1254                           || ! bfd_set_section_flags (dynobj, sreloc, flags)
1255                           || ! bfd_set_section_alignment (dynobj, sreloc, 3))
1256                         return false;
1257                     }
1258                   if (sec->flags & SEC_READONLY)
1259                     info->flags |= DF_TEXTREL;
1260                 }
1261
1262               sreloc->_raw_size += sizeof (Elf64_External_Rela);
1263             }
1264           break;
1265
1266         case R_SPARC_REGISTER:
1267           /* Nothing to do.  */
1268           break;
1269
1270         default:
1271           (*_bfd_error_handler) (_("%s: check_relocs: unhandled reloc type %d"),
1272                                 bfd_archive_filename (abfd),
1273                                 ELF64_R_TYPE_ID (rel->r_info));
1274           return false;
1275         }
1276     }
1277
1278   return true;
1279 }
1280
1281 /* Hook called by the linker routine which adds symbols from an object
1282    file.  We use it for STT_REGISTER symbols.  */
1283
1284 static boolean
1285 sparc64_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
1286      bfd *abfd;
1287      struct bfd_link_info *info;
1288      const Elf_Internal_Sym *sym;
1289      const char **namep;
1290      flagword *flagsp ATTRIBUTE_UNUSED;
1291      asection **secp ATTRIBUTE_UNUSED;
1292      bfd_vma *valp ATTRIBUTE_UNUSED;
1293 {
1294   static const char *const stt_types[] = { "NOTYPE", "OBJECT", "FUNCTION" };
1295
1296   if (ELF_ST_TYPE (sym->st_info) == STT_REGISTER)
1297     {
1298       int reg;
1299       struct sparc64_elf_app_reg *p;
1300
1301       reg = (int)sym->st_value;
1302       switch (reg & ~1)
1303         {
1304         case 2: reg -= 2; break;
1305         case 6: reg -= 4; break;
1306         default:
1307           (*_bfd_error_handler)
1308             (_("%s: Only registers %%g[2367] can be declared using STT_REGISTER"),
1309              bfd_archive_filename (abfd));
1310           return false;
1311         }
1312
1313       if (info->hash->creator != abfd->xvec
1314           || (abfd->flags & DYNAMIC) != 0)
1315         {
1316           /* STT_REGISTER only works when linking an elf64_sparc object.
1317              If STT_REGISTER comes from a dynamic object, don't put it into
1318              the output bfd.  The dynamic linker will recheck it.  */
1319           *namep = NULL;
1320           return true;
1321         }
1322
1323       p = sparc64_elf_hash_table(info)->app_regs + reg;
1324
1325       if (p->name != NULL && strcmp (p->name, *namep))
1326         {
1327           (*_bfd_error_handler)
1328             (_("Register %%g%d used incompatibly: %s in %s"),
1329              (int) sym->st_value,
1330              **namep ? *namep : "#scratch", bfd_archive_filename (abfd));
1331           (*_bfd_error_handler)
1332             (_("  previously %s in %s"),
1333              *p->name ? p->name : "#scratch", bfd_archive_filename (p->abfd));
1334           return false;
1335         }
1336
1337       if (p->name == NULL)
1338         {
1339           if (**namep)
1340             {
1341               struct elf_link_hash_entry *h;
1342
1343               h = (struct elf_link_hash_entry *)
1344                 bfd_link_hash_lookup (info->hash, *namep, false, false, false);
1345
1346               if (h != NULL)
1347                 {
1348                   unsigned char type = h->type;
1349
1350                   if (type > STT_FUNC)
1351                     type = 0;
1352                   (*_bfd_error_handler)
1353                     (_("Symbol `%s' has differing types: %s in %s"),
1354                      *namep, "REGISTER", bfd_archive_filename (abfd));
1355                   (*_bfd_error_handler)
1356                     (_("  previously %s in %s"),
1357                      stt_types[type], bfd_archive_filename (p->abfd));
1358                   return false;
1359                 }
1360
1361               p->name = bfd_hash_allocate (&info->hash->table,
1362                                            strlen (*namep) + 1);
1363               if (!p->name)
1364                 return false;
1365
1366               strcpy (p->name, *namep);
1367             }
1368           else
1369             p->name = "";
1370           p->bind = ELF_ST_BIND (sym->st_info);
1371           p->abfd = abfd;
1372           p->shndx = sym->st_shndx;
1373         }
1374       else
1375         {
1376           if (p->bind == STB_WEAK
1377               && ELF_ST_BIND (sym->st_info) == STB_GLOBAL)
1378             {
1379               p->bind = STB_GLOBAL;
1380               p->abfd = abfd;
1381             }
1382         }
1383       *namep = NULL;
1384       return true;
1385     }
1386   else if (! *namep || ! **namep)
1387     return true;
1388   else
1389     {
1390       int i;
1391       struct sparc64_elf_app_reg *p;
1392
1393       p = sparc64_elf_hash_table(info)->app_regs;
1394       for (i = 0; i < 4; i++, p++)
1395         if (p->name != NULL && ! strcmp (p->name, *namep))
1396           {
1397             unsigned char type = ELF_ST_TYPE (sym->st_info);
1398
1399             if (type > STT_FUNC)
1400               type = 0;
1401             (*_bfd_error_handler)
1402               (_("Symbol `%s' has differing types: %s in %s"),
1403                *namep, stt_types[type], bfd_archive_filename (abfd));
1404             (*_bfd_error_handler)
1405               (_("  previously %s in %s"),
1406                "REGISTER", bfd_archive_filename (p->abfd));
1407             return false;
1408           }
1409     }
1410   return true;
1411 }
1412
1413 /* This function takes care of emiting STT_REGISTER symbols
1414    which we cannot easily keep in the symbol hash table.  */
1415
1416 static boolean
1417 sparc64_elf_output_arch_syms (output_bfd, info, finfo, func)
1418      bfd *output_bfd ATTRIBUTE_UNUSED;
1419      struct bfd_link_info *info;
1420      PTR finfo;
1421      boolean (*func) PARAMS ((PTR, const char *,
1422                               Elf_Internal_Sym *, asection *));
1423 {
1424   int reg;
1425   struct sparc64_elf_app_reg *app_regs =
1426     sparc64_elf_hash_table(info)->app_regs;
1427   Elf_Internal_Sym sym;
1428
1429   /* We arranged in size_dynamic_sections to put the STT_REGISTER entries
1430      at the end of the dynlocal list, so they came at the end of the local
1431      symbols in the symtab.  Except that they aren't STB_LOCAL, so we need
1432      to back up symtab->sh_info.  */
1433   if (elf_hash_table (info)->dynlocal)
1434     {
1435       bfd * dynobj = elf_hash_table (info)->dynobj;
1436       asection *dynsymsec = bfd_get_section_by_name (dynobj, ".dynsym");
1437       struct elf_link_local_dynamic_entry *e;
1438
1439       for (e = elf_hash_table (info)->dynlocal; e ; e = e->next)
1440         if (e->input_indx == -1)
1441           break;
1442       if (e)
1443         {
1444           elf_section_data (dynsymsec->output_section)->this_hdr.sh_info
1445             = e->dynindx;
1446         }
1447     }
1448
1449   if (info->strip == strip_all)
1450     return true;
1451
1452   for (reg = 0; reg < 4; reg++)
1453     if (app_regs [reg].name != NULL)
1454       {
1455         if (info->strip == strip_some
1456             && bfd_hash_lookup (info->keep_hash,
1457                                 app_regs [reg].name,
1458                                 false, false) == NULL)
1459           continue;
1460
1461         sym.st_value = reg < 2 ? reg + 2 : reg + 4;
1462         sym.st_size = 0;
1463         sym.st_other = 0;
1464         sym.st_info = ELF_ST_INFO (app_regs [reg].bind, STT_REGISTER);
1465         sym.st_shndx = app_regs [reg].shndx;
1466         if (! (*func) (finfo, app_regs [reg].name, &sym,
1467                        sym.st_shndx == SHN_ABS
1468                          ? bfd_abs_section_ptr : bfd_und_section_ptr))
1469           return false;
1470       }
1471
1472   return true;
1473 }
1474
1475 static int
1476 sparc64_elf_get_symbol_type (elf_sym, type)
1477      Elf_Internal_Sym * elf_sym;
1478      int type;
1479 {
1480   if (ELF_ST_TYPE (elf_sym->st_info) == STT_REGISTER)
1481     return STT_REGISTER;
1482   else
1483     return type;
1484 }
1485
1486 /* A STB_GLOBAL,STT_REGISTER symbol should be BSF_GLOBAL
1487    even in SHN_UNDEF section.  */
1488
1489 static void
1490 sparc64_elf_symbol_processing (abfd, asym)
1491      bfd *abfd ATTRIBUTE_UNUSED;
1492      asymbol *asym;
1493 {
1494   elf_symbol_type *elfsym;
1495
1496   elfsym = (elf_symbol_type *) asym;
1497   if (elfsym->internal_elf_sym.st_info
1498       == ELF_ST_INFO (STB_GLOBAL, STT_REGISTER))
1499     {
1500       asym->flags |= BSF_GLOBAL;
1501     }
1502 }
1503
1504 /* Adjust a symbol defined by a dynamic object and referenced by a
1505    regular object.  The current definition is in some section of the
1506    dynamic object, but we're not including those sections.  We have to
1507    change the definition to something the rest of the link can
1508    understand.  */
1509
1510 static boolean
1511 sparc64_elf_adjust_dynamic_symbol (info, h)
1512      struct bfd_link_info *info;
1513      struct elf_link_hash_entry *h;
1514 {
1515   bfd *dynobj;
1516   asection *s;
1517   unsigned int power_of_two;
1518
1519   dynobj = elf_hash_table (info)->dynobj;
1520
1521   /* Make sure we know what is going on here.  */
1522   BFD_ASSERT (dynobj != NULL
1523               && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
1524                   || h->weakdef != NULL
1525                   || ((h->elf_link_hash_flags
1526                        & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1527                       && (h->elf_link_hash_flags
1528                           & ELF_LINK_HASH_REF_REGULAR) != 0
1529                       && (h->elf_link_hash_flags
1530                           & ELF_LINK_HASH_DEF_REGULAR) == 0)));
1531
1532   /* If this is a function, put it in the procedure linkage table.  We
1533      will fill in the contents of the procedure linkage table later
1534      (although we could actually do it here).  The STT_NOTYPE
1535      condition is a hack specifically for the Oracle libraries
1536      delivered for Solaris; for some inexplicable reason, they define
1537      some of their functions as STT_NOTYPE when they really should be
1538      STT_FUNC.  */
1539   if (h->type == STT_FUNC
1540       || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
1541       || (h->type == STT_NOTYPE
1542           && (h->root.type == bfd_link_hash_defined
1543               || h->root.type == bfd_link_hash_defweak)
1544           && (h->root.u.def.section->flags & SEC_CODE) != 0))
1545     {
1546       if (! elf_hash_table (info)->dynamic_sections_created)
1547         {
1548           /* This case can occur if we saw a WPLT30 reloc in an input
1549              file, but none of the input files were dynamic objects.
1550              In such a case, we don't actually need to build a
1551              procedure linkage table, and we can just do a WDISP30
1552              reloc instead.  */
1553           BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
1554           return true;
1555         }
1556
1557       s = bfd_get_section_by_name (dynobj, ".plt");
1558       BFD_ASSERT (s != NULL);
1559
1560       /* The first four bit in .plt is reserved.  */
1561       if (s->_raw_size == 0)
1562         s->_raw_size = PLT_HEADER_SIZE;
1563
1564       /* If this symbol is not defined in a regular file, and we are
1565          not generating a shared library, then set the symbol to this
1566          location in the .plt.  This is required to make function
1567          pointers compare as equal between the normal executable and
1568          the shared library.  */
1569       if (! info->shared
1570           && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1571         {
1572           h->root.u.def.section = s;
1573           h->root.u.def.value = s->_raw_size;
1574         }
1575
1576       /* To simplify matters later, just store the plt index here.  */
1577       h->plt.offset = s->_raw_size / PLT_ENTRY_SIZE;
1578
1579       /* Make room for this entry.  */
1580       s->_raw_size += PLT_ENTRY_SIZE;
1581
1582       /* We also need to make an entry in the .rela.plt section.  */
1583
1584       s = bfd_get_section_by_name (dynobj, ".rela.plt");
1585       BFD_ASSERT (s != NULL);
1586
1587       s->_raw_size += sizeof (Elf64_External_Rela);
1588
1589       /* The procedure linkage table size is bounded by the magnitude
1590          of the offset we can describe in the entry.  */
1591       if (s->_raw_size >= (bfd_vma)1 << 32)
1592         {
1593           bfd_set_error (bfd_error_bad_value);
1594           return false;
1595         }
1596
1597       return true;
1598     }
1599
1600   /* If this is a weak symbol, and there is a real definition, the
1601      processor independent code will have arranged for us to see the
1602      real definition first, and we can just use the same value.  */
1603   if (h->weakdef != NULL)
1604     {
1605       BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1606                   || h->weakdef->root.type == bfd_link_hash_defweak);
1607       h->root.u.def.section = h->weakdef->root.u.def.section;
1608       h->root.u.def.value = h->weakdef->root.u.def.value;
1609       return true;
1610     }
1611
1612   /* This is a reference to a symbol defined by a dynamic object which
1613      is not a function.  */
1614
1615   /* If we are creating a shared library, we must presume that the
1616      only references to the symbol are via the global offset table.
1617      For such cases we need not do anything here; the relocations will
1618      be handled correctly by relocate_section.  */
1619   if (info->shared)
1620     return true;
1621
1622   /* We must allocate the symbol in our .dynbss section, which will
1623      become part of the .bss section of the executable.  There will be
1624      an entry for this symbol in the .dynsym section.  The dynamic
1625      object will contain position independent code, so all references
1626      from the dynamic object to this symbol will go through the global
1627      offset table.  The dynamic linker will use the .dynsym entry to
1628      determine the address it must put in the global offset table, so
1629      both the dynamic object and the regular object will refer to the
1630      same memory location for the variable.  */
1631
1632   s = bfd_get_section_by_name (dynobj, ".dynbss");
1633   BFD_ASSERT (s != NULL);
1634
1635   /* We must generate a R_SPARC_COPY reloc to tell the dynamic linker
1636      to copy the initial value out of the dynamic object and into the
1637      runtime process image.  We need to remember the offset into the
1638      .rel.bss section we are going to use.  */
1639   if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1640     {
1641       asection *srel;
1642
1643       srel = bfd_get_section_by_name (dynobj, ".rela.bss");
1644       BFD_ASSERT (srel != NULL);
1645       srel->_raw_size += sizeof (Elf64_External_Rela);
1646       h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1647     }
1648
1649   /* We need to figure out the alignment required for this symbol.  I
1650      have no idea how ELF linkers handle this.  16-bytes is the size
1651      of the largest type that requires hard alignment -- long double.  */
1652   power_of_two = bfd_log2 (h->size);
1653   if (power_of_two > 4)
1654     power_of_two = 4;
1655
1656   /* Apply the required alignment.  */
1657   s->_raw_size = BFD_ALIGN (s->_raw_size,
1658                             (bfd_size_type) (1 << power_of_two));
1659   if (power_of_two > bfd_get_section_alignment (dynobj, s))
1660     {
1661       if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1662         return false;
1663     }
1664
1665   /* Define the symbol as being at this point in the section.  */
1666   h->root.u.def.section = s;
1667   h->root.u.def.value = s->_raw_size;
1668
1669   /* Increment the section size to make room for the symbol.  */
1670   s->_raw_size += h->size;
1671
1672   return true;
1673 }
1674
1675 /* Set the sizes of the dynamic sections.  */
1676
1677 static boolean
1678 sparc64_elf_size_dynamic_sections (output_bfd, info)
1679      bfd *output_bfd;
1680      struct bfd_link_info *info;
1681 {
1682   bfd *dynobj;
1683   asection *s;
1684   boolean relplt;
1685
1686   dynobj = elf_hash_table (info)->dynobj;
1687   BFD_ASSERT (dynobj != NULL);
1688
1689   if (elf_hash_table (info)->dynamic_sections_created)
1690     {
1691       /* Set the contents of the .interp section to the interpreter.  */
1692       if (! info->shared)
1693         {
1694           s = bfd_get_section_by_name (dynobj, ".interp");
1695           BFD_ASSERT (s != NULL);
1696           s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
1697           s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1698         }
1699     }
1700   else
1701     {
1702       /* We may have created entries in the .rela.got section.
1703          However, if we are not creating the dynamic sections, we will
1704          not actually use these entries.  Reset the size of .rela.got,
1705          which will cause it to get stripped from the output file
1706          below.  */
1707       s = bfd_get_section_by_name (dynobj, ".rela.got");
1708       if (s != NULL)
1709         s->_raw_size = 0;
1710     }
1711
1712   /* The check_relocs and adjust_dynamic_symbol entry points have
1713      determined the sizes of the various dynamic sections.  Allocate
1714      memory for them.  */
1715   relplt = false;
1716   for (s = dynobj->sections; s != NULL; s = s->next)
1717     {
1718       const char *name;
1719       boolean strip;
1720
1721       if ((s->flags & SEC_LINKER_CREATED) == 0)
1722         continue;
1723
1724       /* It's OK to base decisions on the section name, because none
1725          of the dynobj section names depend upon the input files.  */
1726       name = bfd_get_section_name (dynobj, s);
1727
1728       strip = false;
1729
1730       if (strncmp (name, ".rela", 5) == 0)
1731         {
1732           if (s->_raw_size == 0)
1733             {
1734               /* If we don't need this section, strip it from the
1735                  output file.  This is to handle .rela.bss and
1736                  .rel.plt.  We must create it in
1737                  create_dynamic_sections, because it must be created
1738                  before the linker maps input sections to output
1739                  sections.  The linker does that before
1740                  adjust_dynamic_symbol is called, and it is that
1741                  function which decides whether anything needs to go
1742                  into these sections.  */
1743               strip = true;
1744             }
1745           else
1746             {
1747               if (strcmp (name, ".rela.plt") == 0)
1748                 relplt = true;
1749
1750               /* We use the reloc_count field as a counter if we need
1751                  to copy relocs into the output file.  */
1752               s->reloc_count = 0;
1753             }
1754         }
1755       else if (strcmp (name, ".plt") != 0
1756                && strncmp (name, ".got", 4) != 0)
1757         {
1758           /* It's not one of our sections, so don't allocate space.  */
1759           continue;
1760         }
1761
1762       if (strip)
1763         {
1764           _bfd_strip_section_from_output (info, s);
1765           continue;
1766         }
1767
1768       /* Allocate memory for the section contents.  Zero the memory
1769          for the benefit of .rela.plt, which has 4 unused entries
1770          at the beginning, and we don't want garbage.  */
1771       s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
1772       if (s->contents == NULL && s->_raw_size != 0)
1773         return false;
1774     }
1775
1776   if (elf_hash_table (info)->dynamic_sections_created)
1777     {
1778       /* Add some entries to the .dynamic section.  We fill in the
1779          values later, in sparc64_elf_finish_dynamic_sections, but we
1780          must add the entries now so that we get the correct size for
1781          the .dynamic section.  The DT_DEBUG entry is filled in by the
1782          dynamic linker and used by the debugger.  */
1783 #define add_dynamic_entry(TAG, VAL) \
1784   bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
1785
1786       int reg;
1787       struct sparc64_elf_app_reg * app_regs;
1788       struct bfd_strtab_hash *dynstr;
1789       struct elf_link_hash_table *eht = elf_hash_table (info);
1790
1791       if (!info->shared)
1792         {
1793           if (!add_dynamic_entry (DT_DEBUG, 0))
1794             return false;
1795         }
1796
1797       if (relplt)
1798         {
1799           if (!add_dynamic_entry (DT_PLTGOT, 0)
1800               || !add_dynamic_entry (DT_PLTRELSZ, 0)
1801               || !add_dynamic_entry (DT_PLTREL, DT_RELA)
1802               || !add_dynamic_entry (DT_JMPREL, 0))
1803             return false;
1804         }
1805
1806       if (!add_dynamic_entry (DT_RELA, 0)
1807           || !add_dynamic_entry (DT_RELASZ, 0)
1808           || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
1809         return false;
1810
1811       if (info->flags & DF_TEXTREL)
1812         {
1813           if (!add_dynamic_entry (DT_TEXTREL, 0))
1814             return false;
1815         }
1816
1817       /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
1818          entries if needed.  */
1819       app_regs = sparc64_elf_hash_table (info)->app_regs;
1820       dynstr = eht->dynstr;
1821
1822       for (reg = 0; reg < 4; reg++)
1823         if (app_regs [reg].name != NULL)
1824           {
1825             struct elf_link_local_dynamic_entry *entry, *e;
1826
1827             if (!add_dynamic_entry (DT_SPARC_REGISTER, 0))
1828               return false;
1829
1830             entry = (struct elf_link_local_dynamic_entry *)
1831               bfd_hash_allocate (&info->hash->table, sizeof (*entry));
1832             if (entry == NULL)
1833               return false;
1834
1835             /* We cheat here a little bit: the symbol will not be local, so we
1836                put it at the end of the dynlocal linked list.  We will fix it
1837                later on, as we have to fix other fields anyway.  */
1838             entry->isym.st_value = reg < 2 ? reg + 2 : reg + 4;
1839             entry->isym.st_size = 0;
1840             if (*app_regs [reg].name != '\0')
1841               entry->isym.st_name
1842                 = _bfd_stringtab_add (dynstr, app_regs[reg].name, true, false);
1843             else
1844               entry->isym.st_name = 0;
1845             entry->isym.st_other = 0;
1846             entry->isym.st_info = ELF_ST_INFO (app_regs [reg].bind,
1847                                                STT_REGISTER);
1848             entry->isym.st_shndx = app_regs [reg].shndx;
1849             entry->next = NULL;
1850             entry->input_bfd = output_bfd;
1851             entry->input_indx = -1;
1852
1853             if (eht->dynlocal == NULL)
1854               eht->dynlocal = entry;
1855             else
1856               {
1857                 for (e = eht->dynlocal; e->next; e = e->next)
1858                   ;
1859                 e->next = entry;
1860               }
1861             eht->dynsymcount++;
1862           }
1863     }
1864 #undef add_dynamic_entry
1865
1866   return true;
1867 }
1868 \f
1869 #define SET_SEC_DO_RELAX(section) do { elf_section_data(section)->tdata = (void *)1; } while (0)
1870 #define SEC_DO_RELAX(section) (elf_section_data(section)->tdata == (void *)1)
1871
1872 static boolean
1873 sparc64_elf_relax_section (abfd, section, link_info, again)
1874      bfd *abfd ATTRIBUTE_UNUSED;
1875      asection *section ATTRIBUTE_UNUSED;
1876      struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
1877      boolean *again;
1878 {
1879   *again = false;
1880   SET_SEC_DO_RELAX (section);
1881   return true;
1882 }
1883 \f
1884 /* Relocate a SPARC64 ELF section.  */
1885
1886 static boolean
1887 sparc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1888                               contents, relocs, local_syms, local_sections)
1889      bfd *output_bfd;
1890      struct bfd_link_info *info;
1891      bfd *input_bfd;
1892      asection *input_section;
1893      bfd_byte *contents;
1894      Elf_Internal_Rela *relocs;
1895      Elf_Internal_Sym *local_syms;
1896      asection **local_sections;
1897 {
1898   bfd *dynobj;
1899   Elf_Internal_Shdr *symtab_hdr;
1900   struct elf_link_hash_entry **sym_hashes;
1901   bfd_vma *local_got_offsets;
1902   bfd_vma got_base;
1903   asection *sgot;
1904   asection *splt;
1905   asection *sreloc;
1906   Elf_Internal_Rela *rel;
1907   Elf_Internal_Rela *relend;
1908
1909   dynobj = elf_hash_table (info)->dynobj;
1910   symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
1911   sym_hashes = elf_sym_hashes (input_bfd);
1912   local_got_offsets = elf_local_got_offsets (input_bfd);
1913
1914   if (elf_hash_table(info)->hgot == NULL)
1915     got_base = 0;
1916   else
1917     got_base = elf_hash_table (info)->hgot->root.u.def.value;
1918
1919   sgot = splt = sreloc = NULL;
1920
1921   rel = relocs;
1922   relend = relocs + NUM_SHDR_ENTRIES (& elf_section_data (input_section)->rel_hdr);
1923   for (; rel < relend; rel++)
1924     {
1925       int r_type;
1926       reloc_howto_type *howto;
1927       unsigned long r_symndx;
1928       struct elf_link_hash_entry *h;
1929       Elf_Internal_Sym *sym;
1930       asection *sec;
1931       bfd_vma relocation;
1932       bfd_reloc_status_type r;
1933
1934       r_type = ELF64_R_TYPE_ID (rel->r_info);
1935       if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
1936         {
1937           bfd_set_error (bfd_error_bad_value);
1938           return false;
1939         }
1940       howto = sparc64_elf_howto_table + r_type;
1941
1942       r_symndx = ELF64_R_SYM (rel->r_info);
1943
1944       if (info->relocateable)
1945         {
1946           /* This is a relocateable link.  We don't have to change
1947              anything, unless the reloc is against a section symbol,
1948              in which case we have to adjust according to where the
1949              section symbol winds up in the output section.  */
1950           if (r_symndx < symtab_hdr->sh_info)
1951             {
1952               sym = local_syms + r_symndx;
1953               if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
1954                 {
1955                   sec = local_sections[r_symndx];
1956                   rel->r_addend += sec->output_offset + sym->st_value;
1957                 }
1958             }
1959
1960           continue;
1961         }
1962
1963       /* This is a final link.  */
1964       h = NULL;
1965       sym = NULL;
1966       sec = NULL;
1967       if (r_symndx < symtab_hdr->sh_info)
1968         {
1969           sym = local_syms + r_symndx;
1970           sec = local_sections[r_symndx];
1971           relocation = (sec->output_section->vma
1972                         + sec->output_offset
1973                         + sym->st_value);
1974         }
1975       else
1976         {
1977           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1978           while (h->root.type == bfd_link_hash_indirect
1979                  || h->root.type == bfd_link_hash_warning)
1980             h = (struct elf_link_hash_entry *) h->root.u.i.link;
1981           if (h->root.type == bfd_link_hash_defined
1982               || h->root.type == bfd_link_hash_defweak)
1983             {
1984               boolean skip_it = false;
1985               sec = h->root.u.def.section;
1986
1987               switch (r_type)
1988                 {
1989                 case R_SPARC_WPLT30:
1990                 case R_SPARC_PLT32:
1991                 case R_SPARC_HIPLT22:
1992                 case R_SPARC_LOPLT10:
1993                 case R_SPARC_PCPLT32:
1994                 case R_SPARC_PCPLT22:
1995                 case R_SPARC_PCPLT10:
1996                 case R_SPARC_PLT64:
1997                   if (h->plt.offset != (bfd_vma) -1)
1998                     skip_it = true;
1999                   break;
2000
2001                 case R_SPARC_GOT10:
2002                 case R_SPARC_GOT13:
2003                 case R_SPARC_GOT22:
2004                   if (elf_hash_table(info)->dynamic_sections_created
2005                       && (!info->shared
2006                           || (!info->symbolic && h->dynindx != -1)
2007                           || !(h->elf_link_hash_flags
2008                                & ELF_LINK_HASH_DEF_REGULAR)))
2009                     skip_it = true;
2010                   break;
2011
2012                 case R_SPARC_PC10:
2013                 case R_SPARC_PC22:
2014                 case R_SPARC_PC_HH22:
2015                 case R_SPARC_PC_HM10:
2016                 case R_SPARC_PC_LM22:
2017                   if (!strcmp(h->root.root.string, "_GLOBAL_OFFSET_TABLE_"))
2018                     break;
2019                   /* FALLTHRU */
2020
2021                 case R_SPARC_8:
2022                 case R_SPARC_16:
2023                 case R_SPARC_32:
2024                 case R_SPARC_DISP8:
2025                 case R_SPARC_DISP16:
2026                 case R_SPARC_DISP32:
2027                 case R_SPARC_WDISP30:
2028                 case R_SPARC_WDISP22:
2029                 case R_SPARC_HI22:
2030                 case R_SPARC_22:
2031                 case R_SPARC_13:
2032                 case R_SPARC_LO10:
2033                 case R_SPARC_UA32:
2034                 case R_SPARC_10:
2035                 case R_SPARC_11:
2036                 case R_SPARC_64:
2037                 case R_SPARC_OLO10:
2038                 case R_SPARC_HH22:
2039                 case R_SPARC_HM10:
2040                 case R_SPARC_LM22:
2041                 case R_SPARC_WDISP19:
2042                 case R_SPARC_WDISP16:
2043                 case R_SPARC_7:
2044                 case R_SPARC_5:
2045                 case R_SPARC_6:
2046                 case R_SPARC_DISP64:
2047                 case R_SPARC_HIX22:
2048                 case R_SPARC_LOX10:
2049                 case R_SPARC_H44:
2050                 case R_SPARC_M44:
2051                 case R_SPARC_L44:
2052                 case R_SPARC_UA64:
2053                 case R_SPARC_UA16:
2054                   if (info->shared
2055                       && ((!info->symbolic && h->dynindx != -1)
2056                           || !(h->elf_link_hash_flags
2057                                & ELF_LINK_HASH_DEF_REGULAR)))
2058                     skip_it = true;
2059                   break;
2060                 }
2061
2062               if (skip_it)
2063                 {
2064                   /* In these cases, we don't need the relocation
2065                      value.  We check specially because in some
2066                      obscure cases sec->output_section will be NULL.  */
2067                   relocation = 0;
2068                 }
2069               else
2070                 {
2071                   relocation = (h->root.u.def.value
2072                                 + sec->output_section->vma
2073                                 + sec->output_offset);
2074                 }
2075             }
2076           else if (h->root.type == bfd_link_hash_undefweak)
2077             relocation = 0;
2078           else if (info->shared
2079                    && (!info->symbolic || info->allow_shlib_undefined)
2080                    && !info->no_undefined
2081                    && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2082             relocation = 0;
2083           else
2084             {
2085               if (! ((*info->callbacks->undefined_symbol)
2086                      (info, h->root.root.string, input_bfd,
2087                       input_section, rel->r_offset,
2088                       (!info->shared || info->no_undefined
2089                        || ELF_ST_VISIBILITY (h->other)))))
2090                 return false;
2091
2092               /* To avoid generating warning messages about truncated
2093                  relocations, set the relocation's address to be the same as
2094                  the start of this section.  */
2095
2096               if (input_section->output_section != NULL)
2097                 relocation = input_section->output_section->vma;
2098               else
2099                 relocation = 0;
2100             }
2101         }
2102
2103       /* When generating a shared object, these relocations are copied
2104          into the output file to be resolved at run time.  */
2105       if (info->shared && (input_section->flags & SEC_ALLOC))
2106         {
2107           switch (r_type)
2108             {
2109             case R_SPARC_PC10:
2110             case R_SPARC_PC22:
2111             case R_SPARC_PC_HH22:
2112             case R_SPARC_PC_HM10:
2113             case R_SPARC_PC_LM22:
2114               if (h != NULL
2115                   && !strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_"))
2116                 break;
2117               /* Fall through.  */
2118             case R_SPARC_DISP8:
2119             case R_SPARC_DISP16:
2120             case R_SPARC_DISP32:
2121             case R_SPARC_WDISP30:
2122             case R_SPARC_WDISP22:
2123             case R_SPARC_WDISP19:
2124             case R_SPARC_WDISP16:
2125             case R_SPARC_DISP64:
2126               if (h == NULL)
2127                 break;
2128               /* Fall through.  */
2129             case R_SPARC_8:
2130             case R_SPARC_16:
2131             case R_SPARC_32:
2132             case R_SPARC_HI22:
2133             case R_SPARC_22:
2134             case R_SPARC_13:
2135             case R_SPARC_LO10:
2136             case R_SPARC_UA32:
2137             case R_SPARC_10:
2138             case R_SPARC_11:
2139             case R_SPARC_64:
2140             case R_SPARC_OLO10:
2141             case R_SPARC_HH22:
2142             case R_SPARC_HM10:
2143             case R_SPARC_LM22:
2144             case R_SPARC_7:
2145             case R_SPARC_5:
2146             case R_SPARC_6:
2147             case R_SPARC_HIX22:
2148             case R_SPARC_LOX10:
2149             case R_SPARC_H44:
2150             case R_SPARC_M44:
2151             case R_SPARC_L44:
2152             case R_SPARC_UA64:
2153             case R_SPARC_UA16:
2154               {
2155                 Elf_Internal_Rela outrel;
2156                 boolean skip;
2157
2158                 if (sreloc == NULL)
2159                   {
2160                     const char *name =
2161                       (bfd_elf_string_from_elf_section
2162                        (input_bfd,
2163                         elf_elfheader (input_bfd)->e_shstrndx,
2164                         elf_section_data (input_section)->rel_hdr.sh_name));
2165
2166                     if (name == NULL)
2167                       return false;
2168
2169                     BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2170                                 && strcmp (bfd_get_section_name(input_bfd,
2171                                                                 input_section),
2172                                            name + 5) == 0);
2173
2174                     sreloc = bfd_get_section_by_name (dynobj, name);
2175                     BFD_ASSERT (sreloc != NULL);
2176                   }
2177
2178                 skip = false;
2179
2180                 if (elf_section_data (input_section)->stab_info == NULL)
2181                   outrel.r_offset = rel->r_offset;
2182                 else
2183                   {
2184                     bfd_vma off;
2185
2186                     off = (_bfd_stab_section_offset
2187                            (output_bfd, &elf_hash_table (info)->stab_info,
2188                             input_section,
2189                             &elf_section_data (input_section)->stab_info,
2190                             rel->r_offset));
2191                     if (off == MINUS_ONE)
2192                       skip = true;
2193                     outrel.r_offset = off;
2194                   }
2195
2196                 outrel.r_offset += (input_section->output_section->vma
2197                                     + input_section->output_offset);
2198
2199                 /* Optimize unaligned reloc usage now that we know where
2200                    it finally resides.  */
2201                 switch (r_type)
2202                   {
2203                   case R_SPARC_16:
2204                     if (outrel.r_offset & 1) r_type = R_SPARC_UA16;
2205                     break;
2206                   case R_SPARC_UA16:
2207                     if (!(outrel.r_offset & 1)) r_type = R_SPARC_16;
2208                     break;
2209                   case R_SPARC_32:
2210                     if (outrel.r_offset & 3) r_type = R_SPARC_UA32;
2211                     break;
2212                   case R_SPARC_UA32:
2213                     if (!(outrel.r_offset & 3)) r_type = R_SPARC_32;
2214                     break;
2215                   case R_SPARC_64:
2216                     if (outrel.r_offset & 7) r_type = R_SPARC_UA64;
2217                     break;
2218                   case R_SPARC_UA64:
2219                     if (!(outrel.r_offset & 7)) r_type = R_SPARC_64;
2220                     break;
2221                   }
2222
2223                 if (skip)
2224                   memset (&outrel, 0, sizeof outrel);
2225                 /* h->dynindx may be -1 if the symbol was marked to
2226                    become local.  */
2227                 else if (h != NULL
2228                          && ((! info->symbolic && h->dynindx != -1)
2229                              || (h->elf_link_hash_flags
2230                                  & ELF_LINK_HASH_DEF_REGULAR) == 0))
2231                   {
2232                     BFD_ASSERT (h->dynindx != -1);
2233                     outrel.r_info
2234                       = ELF64_R_INFO (h->dynindx,
2235                                       ELF64_R_TYPE_INFO (
2236                                         ELF64_R_TYPE_DATA (rel->r_info),
2237                                                            r_type));
2238                     outrel.r_addend = rel->r_addend;
2239                   }
2240                 else
2241                   {
2242                     if (r_type == R_SPARC_64)
2243                       {
2244                         outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE);
2245                         outrel.r_addend = relocation + rel->r_addend;
2246                       }
2247                     else
2248                       {
2249                         long indx;
2250
2251                         if (h == NULL)
2252                           sec = local_sections[r_symndx];
2253                         else
2254                           {
2255                             BFD_ASSERT (h->root.type == bfd_link_hash_defined
2256                                         || (h->root.type
2257                                             == bfd_link_hash_defweak));
2258                             sec = h->root.u.def.section;
2259                           }
2260                         if (sec != NULL && bfd_is_abs_section (sec))
2261                           indx = 0;
2262                         else if (sec == NULL || sec->owner == NULL)
2263                           {
2264                             bfd_set_error (bfd_error_bad_value);
2265                             return false;
2266                           }
2267                         else
2268                           {
2269                             asection *osec;
2270
2271                             osec = sec->output_section;
2272                             indx = elf_section_data (osec)->dynindx;
2273
2274                             /* FIXME: we really should be able to link non-pic
2275                                shared libraries.  */
2276                             if (indx == 0)
2277                               {
2278                                 BFD_FAIL ();
2279                                 (*_bfd_error_handler)
2280                                   (_("%s: probably compiled without -fPIC?"),
2281                                    bfd_archive_filename (input_bfd));
2282                                 bfd_set_error (bfd_error_bad_value);
2283                                 return false;
2284                               }
2285                           }
2286
2287                         outrel.r_info
2288                           = ELF64_R_INFO (indx,
2289                                           ELF64_R_TYPE_INFO (
2290                                             ELF64_R_TYPE_DATA (rel->r_info),
2291                                                                r_type));
2292                         outrel.r_addend = relocation + rel->r_addend;
2293                       }
2294                   }
2295
2296                 bfd_elf64_swap_reloca_out (output_bfd, &outrel,
2297                                            (((Elf64_External_Rela *)
2298                                              sreloc->contents)
2299                                             + sreloc->reloc_count));
2300                 ++sreloc->reloc_count;
2301
2302                 /* This reloc will be computed at runtime, so there's no
2303                    need to do anything now.  */
2304                 continue;
2305               }
2306             break;
2307             }
2308         }
2309
2310       switch (r_type)
2311         {
2312         case R_SPARC_GOT10:
2313         case R_SPARC_GOT13:
2314         case R_SPARC_GOT22:
2315           /* Relocation is to the entry for this symbol in the global
2316              offset table.  */
2317           if (sgot == NULL)
2318             {
2319               sgot = bfd_get_section_by_name (dynobj, ".got");
2320               BFD_ASSERT (sgot != NULL);
2321             }
2322
2323           if (h != NULL)
2324             {
2325               bfd_vma off = h->got.offset;
2326               BFD_ASSERT (off != (bfd_vma) -1);
2327
2328               if (! elf_hash_table (info)->dynamic_sections_created
2329                   || (info->shared
2330                       && (info->symbolic || h->dynindx == -1)
2331                       && (h->elf_link_hash_flags
2332                           & ELF_LINK_HASH_DEF_REGULAR)))
2333                 {
2334                   /* This is actually a static link, or it is a -Bsymbolic
2335                      link and the symbol is defined locally, or the symbol
2336                      was forced to be local because of a version file.  We
2337                      must initialize this entry in the global offset table.
2338                      Since the offset must always be a multiple of 8, we
2339                      use the least significant bit to record whether we
2340                      have initialized it already.
2341
2342                      When doing a dynamic link, we create a .rela.got
2343                      relocation entry to initialize the value.  This is
2344                      done in the finish_dynamic_symbol routine.  */
2345
2346                   if ((off & 1) != 0)
2347                     off &= ~1;
2348                   else
2349                     {
2350                       bfd_put_64 (output_bfd, relocation,
2351                                   sgot->contents + off);
2352                       h->got.offset |= 1;
2353                     }
2354                 }
2355               relocation = sgot->output_offset + off - got_base;
2356             }
2357           else
2358             {
2359               bfd_vma off;
2360
2361               BFD_ASSERT (local_got_offsets != NULL);
2362               off = local_got_offsets[r_symndx];
2363               BFD_ASSERT (off != (bfd_vma) -1);
2364
2365               /* The offset must always be a multiple of 8.  We use
2366                  the least significant bit to record whether we have
2367                  already processed this entry.  */
2368               if ((off & 1) != 0)
2369                 off &= ~1;
2370               else
2371                 {
2372                   local_got_offsets[r_symndx] |= 1;
2373
2374                   if (info->shared)
2375                     {
2376                       asection *srelgot;
2377                       Elf_Internal_Rela outrel;
2378
2379                       /* The Solaris 2.7 64-bit linker adds the contents
2380                          of the location to the value of the reloc.
2381                          Note this is different behaviour to the
2382                          32-bit linker, which both adds the contents
2383                          and ignores the addend.  So clear the location.  */
2384                       bfd_put_64 (output_bfd, (bfd_vma) 0,
2385                                   sgot->contents + off);
2386
2387                       /* We need to generate a R_SPARC_RELATIVE reloc
2388                          for the dynamic linker.  */
2389                       srelgot = bfd_get_section_by_name(dynobj, ".rela.got");
2390                       BFD_ASSERT (srelgot != NULL);
2391
2392                       outrel.r_offset = (sgot->output_section->vma
2393                                          + sgot->output_offset
2394                                          + off);
2395                       outrel.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE);
2396                       outrel.r_addend = relocation;
2397                       bfd_elf64_swap_reloca_out (output_bfd, &outrel,
2398                                                  (((Elf64_External_Rela *)
2399                                                    srelgot->contents)
2400                                                   + srelgot->reloc_count));
2401                       ++srelgot->reloc_count;
2402                     }
2403                   else
2404                     bfd_put_64 (output_bfd, relocation, sgot->contents + off);
2405                 }
2406               relocation = sgot->output_offset + off - got_base;
2407             }
2408           goto do_default;
2409
2410         case R_SPARC_WPLT30:
2411         case R_SPARC_PLT32:
2412         case R_SPARC_HIPLT22:
2413         case R_SPARC_LOPLT10:
2414         case R_SPARC_PCPLT32:
2415         case R_SPARC_PCPLT22:
2416         case R_SPARC_PCPLT10:
2417         case R_SPARC_PLT64:
2418           /* Relocation is to the entry for this symbol in the
2419              procedure linkage table.  */
2420           BFD_ASSERT (h != NULL);
2421
2422           if (h->plt.offset == (bfd_vma) -1)
2423             {
2424               /* We didn't make a PLT entry for this symbol.  This
2425                  happens when statically linking PIC code, or when
2426                  using -Bsymbolic.  */
2427               goto do_default;
2428             }
2429
2430           if (splt == NULL)
2431             {
2432               splt = bfd_get_section_by_name (dynobj, ".plt");
2433               BFD_ASSERT (splt != NULL);
2434             }
2435
2436           relocation = (splt->output_section->vma
2437                         + splt->output_offset
2438                         + sparc64_elf_plt_entry_offset (h->plt.offset));
2439           if (r_type == R_SPARC_WPLT30)
2440             goto do_wplt30;
2441           goto do_default;
2442
2443         case R_SPARC_OLO10:
2444           {
2445             bfd_vma x;
2446
2447             relocation += rel->r_addend;
2448             relocation = (relocation & 0x3ff) + ELF64_R_TYPE_DATA (rel->r_info);
2449
2450             x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2451             x = (x & ~(bfd_vma) 0x1fff) | (relocation & 0x1fff);
2452             bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2453
2454             r = bfd_check_overflow (howto->complain_on_overflow,
2455                                     howto->bitsize, howto->rightshift,
2456                                     bfd_arch_bits_per_address (input_bfd),
2457                                     relocation);
2458           }
2459           break;
2460
2461         case R_SPARC_WDISP16:
2462           {
2463             bfd_vma x;
2464
2465             relocation += rel->r_addend;
2466             /* Adjust for pc-relative-ness.  */
2467             relocation -= (input_section->output_section->vma
2468                            + input_section->output_offset);
2469             relocation -= rel->r_offset;
2470
2471             x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2472             x &= ~(bfd_vma) 0x303fff;
2473             x |= ((((relocation >> 2) & 0xc000) << 6)
2474                   | ((relocation >> 2) & 0x3fff));
2475             bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2476
2477             r = bfd_check_overflow (howto->complain_on_overflow,
2478                                     howto->bitsize, howto->rightshift,
2479                                     bfd_arch_bits_per_address (input_bfd),
2480                                     relocation);
2481           }
2482           break;
2483
2484         case R_SPARC_HIX22:
2485           {
2486             bfd_vma x;
2487
2488             relocation += rel->r_addend;
2489             relocation = relocation ^ MINUS_ONE;
2490
2491             x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2492             x = (x & ~(bfd_vma) 0x3fffff) | ((relocation >> 10) & 0x3fffff);
2493             bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2494
2495             r = bfd_check_overflow (howto->complain_on_overflow,
2496                                     howto->bitsize, howto->rightshift,
2497                                     bfd_arch_bits_per_address (input_bfd),
2498                                     relocation);
2499           }
2500           break;
2501
2502         case R_SPARC_LOX10:
2503           {
2504             bfd_vma x;
2505
2506             relocation += rel->r_addend;
2507             relocation = (relocation & 0x3ff) | 0x1c00;
2508
2509             x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2510             x = (x & ~(bfd_vma) 0x1fff) | relocation;
2511             bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2512
2513             r = bfd_reloc_ok;
2514           }
2515           break;
2516
2517         case R_SPARC_WDISP30:
2518         do_wplt30:
2519           if (SEC_DO_RELAX (input_section)
2520               && rel->r_offset + 4 < input_section->_raw_size)
2521             {
2522 #define G0              0
2523 #define O7              15
2524 #define XCC             (2 << 20)
2525 #define COND(x)         (((x)&0xf)<<25)
2526 #define CONDA           COND(0x8)
2527 #define INSN_BPA        (F2(0,1) | CONDA | BPRED | XCC)
2528 #define INSN_BA         (F2(0,2) | CONDA)
2529 #define INSN_OR         F3(2, 0x2, 0)
2530 #define INSN_NOP        F2(0,4)
2531
2532               bfd_vma x, y;
2533
2534               /* If the instruction is a call with either:
2535                  restore
2536                  arithmetic instruction with rd == %o7
2537                  where rs1 != %o7 and rs2 if it is register != %o7
2538                  then we can optimize if the call destination is near
2539                  by changing the call into a branch always.  */
2540               x = bfd_get_32 (input_bfd, contents + rel->r_offset);
2541               y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
2542               if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
2543                 {
2544                   if (((y & OP3(~0)) == OP3(0x3d) /* restore */
2545                        || ((y & OP3(0x28)) == 0 /* arithmetic */
2546                            && (y & RD(~0)) == RD(O7)))
2547                       && (y & RS1(~0)) != RS1(O7)
2548                       && ((y & F3I(~0))
2549                           || (y & RS2(~0)) != RS2(O7)))
2550                     {
2551                       bfd_vma reloc;
2552
2553                       reloc = relocation + rel->r_addend - rel->r_offset;
2554                       reloc -= (input_section->output_section->vma
2555                                 + input_section->output_offset);
2556                       if (reloc & 3)
2557                         goto do_default;
2558
2559                       /* Ensure the branch fits into simm22.  */
2560                       if ((reloc & ~(bfd_vma)0x7fffff)
2561                            && ((reloc | 0x7fffff) != MINUS_ONE))
2562                         goto do_default;
2563                       reloc >>= 2;
2564
2565                       /* Check whether it fits into simm19.  */
2566                       if ((reloc & 0x3c0000) == 0
2567                           || (reloc & 0x3c0000) == 0x3c0000)
2568                         x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
2569                       else
2570                         x = INSN_BA | (reloc & 0x3fffff); /* ba */
2571                       bfd_put_32 (input_bfd, x, contents + rel->r_offset);
2572                       r = bfd_reloc_ok;
2573                       if (rel->r_offset >= 4
2574                           && (y & (0xffffffff ^ RS1(~0)))
2575                              == (INSN_OR | RD(O7) | RS2(G0)))
2576                         {
2577                           bfd_vma z;
2578                           unsigned int reg;
2579
2580                           z = bfd_get_32 (input_bfd,
2581                                           contents + rel->r_offset - 4);
2582                           if ((z & (0xffffffff ^ RD(~0)))
2583                               != (INSN_OR | RS1(O7) | RS2(G0)))
2584                             break;
2585
2586                           /* The sequence was
2587                              or %o7, %g0, %rN
2588                              call foo
2589                              or %rN, %g0, %o7
2590
2591                              If call foo was replaced with ba, replace
2592                              or %rN, %g0, %o7 with nop.  */
2593
2594                           reg = (y & RS1(~0)) >> 14;
2595                           if (reg != ((z & RD(~0)) >> 25)
2596                               || reg == G0 || reg == O7)
2597                             break;
2598
2599                           bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
2600                                       contents + rel->r_offset + 4);
2601                         }
2602                       break;
2603                     }
2604                 }
2605             }
2606           /* FALLTHROUGH */
2607
2608         default:
2609         do_default:
2610           r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2611                                         contents, rel->r_offset,
2612                                         relocation, rel->r_addend);
2613           break;
2614         }
2615
2616       switch (r)
2617         {
2618         case bfd_reloc_ok:
2619           break;
2620
2621         default:
2622         case bfd_reloc_outofrange:
2623           abort ();
2624
2625         case bfd_reloc_overflow:
2626           {
2627             const char *name;
2628
2629             if (h != NULL)
2630               {
2631                 if (h->root.type == bfd_link_hash_undefweak
2632                     && howto->pc_relative)
2633                   {
2634                     /* Assume this is a call protected by other code that
2635                        detect the symbol is undefined.  If this is the case,
2636                        we can safely ignore the overflow.  If not, the
2637                        program is hosed anyway, and a little warning isn't
2638                        going to help.  */
2639                     break;
2640                   }
2641
2642                 name = h->root.root.string;
2643               }
2644             else
2645               {
2646                 name = (bfd_elf_string_from_elf_section
2647                         (input_bfd,
2648                          symtab_hdr->sh_link,
2649                          sym->st_name));
2650                 if (name == NULL)
2651                   return false;
2652                 if (*name == '\0')
2653                   name = bfd_section_name (input_bfd, sec);
2654               }
2655             if (! ((*info->callbacks->reloc_overflow)
2656                    (info, name, howto->name, (bfd_vma) 0,
2657                     input_bfd, input_section, rel->r_offset)))
2658               return false;
2659           }
2660         break;
2661         }
2662     }
2663
2664   return true;
2665 }
2666
2667 /* Finish up dynamic symbol handling.  We set the contents of various
2668    dynamic sections here.  */
2669
2670 static boolean
2671 sparc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
2672      bfd *output_bfd;
2673      struct bfd_link_info *info;
2674      struct elf_link_hash_entry *h;
2675      Elf_Internal_Sym *sym;
2676 {
2677   bfd *dynobj;
2678
2679   dynobj = elf_hash_table (info)->dynobj;
2680
2681   if (h->plt.offset != (bfd_vma) -1)
2682     {
2683       asection *splt;
2684       asection *srela;
2685       Elf_Internal_Rela rela;
2686
2687       /* This symbol has an entry in the PLT.  Set it up.  */
2688
2689       BFD_ASSERT (h->dynindx != -1);
2690
2691       splt = bfd_get_section_by_name (dynobj, ".plt");
2692       srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2693       BFD_ASSERT (splt != NULL && srela != NULL);
2694
2695       /* Fill in the entry in the .rela.plt section.  */
2696
2697       if (h->plt.offset < LARGE_PLT_THRESHOLD)
2698         {
2699           rela.r_offset = sparc64_elf_plt_entry_offset (h->plt.offset);
2700           rela.r_addend = 0;
2701         }
2702       else
2703         {
2704           bfd_vma max = splt->_raw_size / PLT_ENTRY_SIZE;
2705           rela.r_offset = sparc64_elf_plt_ptr_offset (h->plt.offset, max);
2706           rela.r_addend = -(sparc64_elf_plt_entry_offset (h->plt.offset) + 4)
2707                           -(splt->output_section->vma + splt->output_offset);
2708         }
2709       rela.r_offset += (splt->output_section->vma + splt->output_offset);
2710       rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_JMP_SLOT);
2711
2712       /* Adjust for the first 4 reserved elements in the .plt section
2713          when setting the offset in the .rela.plt section.
2714          Sun forgot to read their own ABI and copied elf32-sparc behaviour,
2715          thus .plt[4] has corresponding .rela.plt[0] and so on.  */
2716
2717       bfd_elf64_swap_reloca_out (output_bfd, &rela,
2718                                  ((Elf64_External_Rela *) srela->contents
2719                                   + (h->plt.offset - 4)));
2720
2721       if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2722         {
2723           /* Mark the symbol as undefined, rather than as defined in
2724              the .plt section.  Leave the value alone.  */
2725           sym->st_shndx = SHN_UNDEF;
2726           /* If the symbol is weak, we do need to clear the value.
2727              Otherwise, the PLT entry would provide a definition for
2728              the symbol even if the symbol wasn't defined anywhere,
2729              and so the symbol would never be NULL.  */
2730           if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK)
2731               == 0)
2732             sym->st_value = 0;
2733         }
2734     }
2735
2736   if (h->got.offset != (bfd_vma) -1)
2737     {
2738       asection *sgot;
2739       asection *srela;
2740       Elf_Internal_Rela rela;
2741
2742       /* This symbol has an entry in the GOT.  Set it up.  */
2743
2744       sgot = bfd_get_section_by_name (dynobj, ".got");
2745       srela = bfd_get_section_by_name (dynobj, ".rela.got");
2746       BFD_ASSERT (sgot != NULL && srela != NULL);
2747
2748       rela.r_offset = (sgot->output_section->vma
2749                        + sgot->output_offset
2750                        + (h->got.offset &~ (bfd_vma) 1));
2751
2752       /* If this is a -Bsymbolic link, and the symbol is defined
2753          locally, we just want to emit a RELATIVE reloc.  Likewise if
2754          the symbol was forced to be local because of a version file.
2755          The entry in the global offset table will already have been
2756          initialized in the relocate_section function.  */
2757       if (info->shared
2758           && (info->symbolic || h->dynindx == -1)
2759           && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
2760         {
2761           asection *sec = h->root.u.def.section;
2762           rela.r_info = ELF64_R_INFO (0, R_SPARC_RELATIVE);
2763           rela.r_addend = (h->root.u.def.value
2764                            + sec->output_section->vma
2765                            + sec->output_offset);
2766         }
2767       else
2768         {
2769           bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
2770           rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_GLOB_DAT);
2771           rela.r_addend = 0;
2772         }
2773
2774       bfd_elf64_swap_reloca_out (output_bfd, &rela,
2775                                  ((Elf64_External_Rela *) srela->contents
2776                                   + srela->reloc_count));
2777       ++srela->reloc_count;
2778     }
2779
2780   if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
2781     {
2782       asection *s;
2783       Elf_Internal_Rela rela;
2784
2785       /* This symbols needs a copy reloc.  Set it up.  */
2786
2787       BFD_ASSERT (h->dynindx != -1);
2788
2789       s = bfd_get_section_by_name (h->root.u.def.section->owner,
2790                                    ".rela.bss");
2791       BFD_ASSERT (s != NULL);
2792
2793       rela.r_offset = (h->root.u.def.value
2794                        + h->root.u.def.section->output_section->vma
2795                        + h->root.u.def.section->output_offset);
2796       rela.r_info = ELF64_R_INFO (h->dynindx, R_SPARC_COPY);
2797       rela.r_addend = 0;
2798       bfd_elf64_swap_reloca_out (output_bfd, &rela,
2799                                  ((Elf64_External_Rela *) s->contents
2800                                   + s->reloc_count));
2801       ++s->reloc_count;
2802     }
2803
2804   /* Mark some specially defined symbols as absolute.  */
2805   if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2806       || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
2807       || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
2808     sym->st_shndx = SHN_ABS;
2809
2810   return true;
2811 }
2812
2813 /* Finish up the dynamic sections.  */
2814
2815 static boolean
2816 sparc64_elf_finish_dynamic_sections (output_bfd, info)
2817      bfd *output_bfd;
2818      struct bfd_link_info *info;
2819 {
2820   bfd *dynobj;
2821   int stt_regidx = -1;
2822   asection *sdyn;
2823   asection *sgot;
2824
2825   dynobj = elf_hash_table (info)->dynobj;
2826
2827   sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2828
2829   if (elf_hash_table (info)->dynamic_sections_created)
2830     {
2831       asection *splt;
2832       Elf64_External_Dyn *dyncon, *dynconend;
2833
2834       splt = bfd_get_section_by_name (dynobj, ".plt");
2835       BFD_ASSERT (splt != NULL && sdyn != NULL);
2836
2837       dyncon = (Elf64_External_Dyn *) sdyn->contents;
2838       dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
2839       for (; dyncon < dynconend; dyncon++)
2840         {
2841           Elf_Internal_Dyn dyn;
2842           const char *name;
2843           boolean size;
2844
2845           bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
2846
2847           switch (dyn.d_tag)
2848             {
2849             case DT_PLTGOT:   name = ".plt"; size = false; break;
2850             case DT_PLTRELSZ: name = ".rela.plt"; size = true; break;
2851             case DT_JMPREL:   name = ".rela.plt"; size = false; break;
2852             case DT_SPARC_REGISTER:
2853               if (stt_regidx == -1)
2854                 {
2855                   stt_regidx =
2856                     _bfd_elf_link_lookup_local_dynindx (info, output_bfd, -1);
2857                   if (stt_regidx == -1)
2858                     return false;
2859                 }
2860               dyn.d_un.d_val = stt_regidx++;
2861               bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2862               /* fallthrough */
2863             default:          name = NULL; size = false; break;
2864             }
2865
2866           if (name != NULL)
2867             {
2868               asection *s;
2869
2870               s = bfd_get_section_by_name (output_bfd, name);
2871               if (s == NULL)
2872                 dyn.d_un.d_val = 0;
2873               else
2874                 {
2875                   if (! size)
2876                     dyn.d_un.d_ptr = s->vma;
2877                   else
2878                     {
2879                       if (s->_cooked_size != 0)
2880                         dyn.d_un.d_val = s->_cooked_size;
2881                       else
2882                         dyn.d_un.d_val = s->_raw_size;
2883                     }
2884                 }
2885               bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
2886             }
2887         }
2888
2889       /* Initialize the contents of the .plt section.  */
2890       if (splt->_raw_size > 0)
2891         {
2892           sparc64_elf_build_plt (output_bfd, splt->contents,
2893                                  (int) (splt->_raw_size / PLT_ENTRY_SIZE));
2894         }
2895
2896       elf_section_data (splt->output_section)->this_hdr.sh_entsize =
2897         PLT_ENTRY_SIZE;
2898     }
2899
2900   /* Set the first entry in the global offset table to the address of
2901      the dynamic section.  */
2902   sgot = bfd_get_section_by_name (dynobj, ".got");
2903   BFD_ASSERT (sgot != NULL);
2904   if (sgot->_raw_size > 0)
2905     {
2906       if (sdyn == NULL)
2907         bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents);
2908       else
2909         bfd_put_64 (output_bfd,
2910                     sdyn->output_section->vma + sdyn->output_offset,
2911                     sgot->contents);
2912     }
2913
2914   elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8;
2915
2916   return true;
2917 }
2918
2919 static enum elf_reloc_type_class
2920 sparc64_elf_reloc_type_class (type)
2921      int type;
2922 {
2923   switch (type)
2924     {
2925     case R_SPARC_RELATIVE:
2926       return reloc_class_relative;
2927     case R_SPARC_JMP_SLOT:
2928       return reloc_class_plt;
2929     case R_SPARC_COPY:
2930       return reloc_class_copy;
2931     default:
2932       return reloc_class_normal;
2933     }
2934 }
2935 \f
2936 /* Functions for dealing with the e_flags field.  */
2937
2938 /* Copy backend specific data from one object module to another */
2939 static boolean
2940 sparc64_elf_copy_private_bfd_data (ibfd, obfd)
2941      bfd *ibfd, *obfd;
2942 {
2943   if (   bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2944       || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2945     return true;
2946
2947   BFD_ASSERT (!elf_flags_init (obfd)
2948               || (elf_elfheader (obfd)->e_flags
2949                   == elf_elfheader (ibfd)->e_flags));
2950
2951   elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
2952   elf_flags_init (obfd) = true;
2953   return true;
2954 }
2955
2956 /* Merge backend specific data from an object file to the output
2957    object file when linking.  */
2958
2959 static boolean
2960 sparc64_elf_merge_private_bfd_data (ibfd, obfd)
2961      bfd *ibfd;
2962      bfd *obfd;
2963 {
2964   boolean error;
2965   flagword new_flags, old_flags;
2966   int new_mm, old_mm;
2967
2968   if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2969       || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2970     return true;
2971
2972   new_flags = elf_elfheader (ibfd)->e_flags;
2973   old_flags = elf_elfheader (obfd)->e_flags;
2974
2975   if (!elf_flags_init (obfd))   /* First call, no flags set */
2976     {
2977       elf_flags_init (obfd) = true;
2978       elf_elfheader (obfd)->e_flags = new_flags;
2979     }
2980
2981   else if (new_flags == old_flags)      /* Compatible flags are ok */
2982     ;
2983
2984   else                                  /* Incompatible flags */
2985     {
2986       error = false;
2987
2988 #define EF_SPARC_ISA_EXTENSIONS \
2989   (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3 | EF_SPARC_HAL_R1)
2990
2991       if ((ibfd->flags & DYNAMIC) != 0)
2992         {
2993           /* We don't want dynamic objects memory ordering and
2994              architecture to have any role. That's what dynamic linker
2995              should do.  */
2996           new_flags &= ~(EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS);
2997           new_flags |= (old_flags
2998                         & (EF_SPARCV9_MM | EF_SPARC_ISA_EXTENSIONS));
2999         }
3000       else
3001         {
3002           /* Choose the highest architecture requirements.  */
3003           old_flags |= (new_flags & EF_SPARC_ISA_EXTENSIONS);
3004           new_flags |= (old_flags & EF_SPARC_ISA_EXTENSIONS);
3005           if ((old_flags & (EF_SPARC_SUN_US1 | EF_SPARC_SUN_US3))
3006               && (old_flags & EF_SPARC_HAL_R1))
3007             {
3008               error = true;
3009               (*_bfd_error_handler)
3010                 (_("%s: linking UltraSPARC specific with HAL specific code"),
3011                  bfd_archive_filename (ibfd));
3012             }
3013           /* Choose the most restrictive memory ordering.  */
3014           old_mm = (old_flags & EF_SPARCV9_MM);
3015           new_mm = (new_flags & EF_SPARCV9_MM);
3016           old_flags &= ~EF_SPARCV9_MM;
3017           new_flags &= ~EF_SPARCV9_MM;
3018           if (new_mm < old_mm)
3019             old_mm = new_mm;
3020           old_flags |= old_mm;
3021           new_flags |= old_mm;
3022         }
3023
3024       /* Warn about any other mismatches */
3025       if (new_flags != old_flags)
3026         {
3027           error = true;
3028           (*_bfd_error_handler)
3029             (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
3030              bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags);
3031         }
3032
3033       elf_elfheader (obfd)->e_flags = old_flags;
3034
3035       if (error)
3036         {
3037           bfd_set_error (bfd_error_bad_value);
3038           return false;
3039         }
3040     }
3041   return true;
3042 }
3043 \f
3044 /* Print a STT_REGISTER symbol to file FILE.  */
3045
3046 static const char *
3047 sparc64_elf_print_symbol_all (abfd, filep, symbol)
3048      bfd *abfd ATTRIBUTE_UNUSED;
3049      PTR filep;
3050      asymbol *symbol;
3051 {
3052   FILE *file = (FILE *) filep;
3053   int reg, type;
3054
3055   if (ELF_ST_TYPE (((elf_symbol_type *) symbol)->internal_elf_sym.st_info)
3056       != STT_REGISTER)
3057     return NULL;
3058
3059   reg = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value;
3060   type = symbol->flags;
3061   fprintf (file, "REG_%c%c%11s%c%c    R", "GOLI" [reg / 8], '0' + (reg & 7), "",
3062                  ((type & BSF_LOCAL)
3063                   ? (type & BSF_GLOBAL) ? '!' : 'l'
3064                   : (type & BSF_GLOBAL) ? 'g' : ' '),
3065                  (type & BSF_WEAK) ? 'w' : ' ');
3066   if (symbol->name == NULL || symbol->name [0] == '\0')
3067     return "#scratch";
3068   else
3069     return symbol->name;
3070 }
3071 \f
3072 /* Set the right machine number for a SPARC64 ELF file.  */
3073
3074 static boolean
3075 sparc64_elf_object_p (abfd)
3076      bfd *abfd;
3077 {
3078   unsigned long mach = bfd_mach_sparc_v9;
3079
3080   if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
3081     mach = bfd_mach_sparc_v9b;
3082   else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
3083     mach = bfd_mach_sparc_v9a;
3084   return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, mach);
3085 }
3086
3087 /* Relocations in the 64 bit SPARC ELF ABI are more complex than in
3088    standard ELF, because R_SPARC_OLO10 has secondary addend in
3089    ELF64_R_TYPE_DATA field.  This structure is used to redirect the
3090    relocation handling routines.  */
3091
3092 const struct elf_size_info sparc64_elf_size_info =
3093 {
3094   sizeof (Elf64_External_Ehdr),
3095   sizeof (Elf64_External_Phdr),
3096   sizeof (Elf64_External_Shdr),
3097   sizeof (Elf64_External_Rel),
3098   sizeof (Elf64_External_Rela),
3099   sizeof (Elf64_External_Sym),
3100   sizeof (Elf64_External_Dyn),
3101   sizeof (Elf_External_Note),
3102   4,            /* hash-table entry size */
3103   /* internal relocations per external relocations.
3104      For link purposes we use just 1 internal per
3105      1 external, for assembly and slurp symbol table
3106      we use 2.  */
3107   1,
3108   64,           /* arch_size */
3109   8,            /* file_align */
3110   ELFCLASS64,
3111   EV_CURRENT,
3112   bfd_elf64_write_out_phdrs,
3113   bfd_elf64_write_shdrs_and_ehdr,
3114   sparc64_elf_write_relocs,
3115   bfd_elf64_swap_symbol_out,
3116   sparc64_elf_slurp_reloc_table,
3117   bfd_elf64_slurp_symbol_table,
3118   bfd_elf64_swap_dyn_in,
3119   bfd_elf64_swap_dyn_out,
3120   NULL,
3121   NULL,
3122   NULL,
3123   NULL
3124 };
3125
3126 #define TARGET_BIG_SYM  bfd_elf64_sparc_vec
3127 #define TARGET_BIG_NAME "elf64-sparc"
3128 #define ELF_ARCH        bfd_arch_sparc
3129 #define ELF_MAXPAGESIZE 0x100000
3130
3131 /* This is the official ABI value.  */
3132 #define ELF_MACHINE_CODE EM_SPARCV9
3133
3134 /* This is the value that we used before the ABI was released.  */
3135 #define ELF_MACHINE_ALT1 EM_OLD_SPARCV9
3136
3137 #define bfd_elf64_bfd_link_hash_table_create \
3138   sparc64_elf_bfd_link_hash_table_create
3139
3140 #define elf_info_to_howto \
3141   sparc64_elf_info_to_howto
3142 #define bfd_elf64_get_reloc_upper_bound \
3143   sparc64_elf_get_reloc_upper_bound
3144 #define bfd_elf64_get_dynamic_reloc_upper_bound \
3145   sparc64_elf_get_dynamic_reloc_upper_bound
3146 #define bfd_elf64_canonicalize_dynamic_reloc \
3147   sparc64_elf_canonicalize_dynamic_reloc
3148 #define bfd_elf64_bfd_reloc_type_lookup \
3149   sparc64_elf_reloc_type_lookup
3150 #define bfd_elf64_bfd_relax_section \
3151   sparc64_elf_relax_section
3152
3153 #define elf_backend_create_dynamic_sections \
3154   _bfd_elf_create_dynamic_sections
3155 #define elf_backend_add_symbol_hook \
3156   sparc64_elf_add_symbol_hook
3157 #define elf_backend_get_symbol_type \
3158   sparc64_elf_get_symbol_type
3159 #define elf_backend_symbol_processing \
3160   sparc64_elf_symbol_processing
3161 #define elf_backend_check_relocs \
3162   sparc64_elf_check_relocs
3163 #define elf_backend_adjust_dynamic_symbol \
3164   sparc64_elf_adjust_dynamic_symbol
3165 #define elf_backend_size_dynamic_sections \
3166   sparc64_elf_size_dynamic_sections
3167 #define elf_backend_relocate_section \
3168   sparc64_elf_relocate_section
3169 #define elf_backend_finish_dynamic_symbol \
3170   sparc64_elf_finish_dynamic_symbol
3171 #define elf_backend_finish_dynamic_sections \
3172   sparc64_elf_finish_dynamic_sections
3173 #define elf_backend_print_symbol_all \
3174   sparc64_elf_print_symbol_all
3175 #define elf_backend_output_arch_syms \
3176   sparc64_elf_output_arch_syms
3177 #define bfd_elf64_bfd_copy_private_bfd_data \
3178   sparc64_elf_copy_private_bfd_data
3179 #define bfd_elf64_bfd_merge_private_bfd_data \
3180   sparc64_elf_merge_private_bfd_data
3181
3182 #define elf_backend_size_info \
3183   sparc64_elf_size_info
3184 #define elf_backend_object_p \
3185   sparc64_elf_object_p
3186 #define elf_backend_reloc_type_class \
3187   sparc64_elf_reloc_type_class
3188
3189 #define elf_backend_want_got_plt 0
3190 #define elf_backend_plt_readonly 0
3191 #define elf_backend_want_plt_sym 1
3192
3193 /* Section 5.2.4 of the ABI specifies a 256-byte boundary for the table.  */
3194 #define elf_backend_plt_alignment 8
3195
3196 #define elf_backend_got_header_size 8
3197 #define elf_backend_plt_header_size PLT_HEADER_SIZE
3198
3199 #include "elf64-target.h"