bfd/elf32-i386.c

   1 /* Intel 80386/80486-specific support for 32-bit ELF
   2    Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
   3    2003, 2004 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 "bfdlink.h"
  24 #include "libbfd.h"
  25 #include "elf-bfd.h"
  26
  27 /* 386 uses REL relocations instead of RELA.  */
  28 #define USE_REL 1
  29
  30 #include "elf/i386.h"
  31
  32 static reloc_howto_type elf_howto_table[]=
  33 {
  34   HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
  35         bfd_elf_generic_reloc, "R_386_NONE",
  36         TRUE, 0x00000000, 0x00000000, FALSE),
  37   HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  38         bfd_elf_generic_reloc, "R_386_32",
  39         TRUE, 0xffffffff, 0xffffffff, FALSE),
  40   HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
  41         bfd_elf_generic_reloc, "R_386_PC32",
  42         TRUE, 0xffffffff, 0xffffffff, TRUE),
  43   HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  44         bfd_elf_generic_reloc, "R_386_GOT32",
  45         TRUE, 0xffffffff, 0xffffffff, FALSE),
  46   HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
  47         bfd_elf_generic_reloc, "R_386_PLT32",
  48         TRUE, 0xffffffff, 0xffffffff, TRUE),
  49   HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  50         bfd_elf_generic_reloc, "R_386_COPY",
  51         TRUE, 0xffffffff, 0xffffffff, FALSE),
  52   HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  53         bfd_elf_generic_reloc, "R_386_GLOB_DAT",
  54         TRUE, 0xffffffff, 0xffffffff, FALSE),
  55   HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  56         bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
  57         TRUE, 0xffffffff, 0xffffffff, FALSE),
  58   HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  59         bfd_elf_generic_reloc, "R_386_RELATIVE",
  60         TRUE, 0xffffffff, 0xffffffff, FALSE),
  61   HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  62         bfd_elf_generic_reloc, "R_386_GOTOFF",
  63         TRUE, 0xffffffff, 0xffffffff, FALSE),
  64   HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
  65         bfd_elf_generic_reloc, "R_386_GOTPC",
  66         TRUE, 0xffffffff, 0xffffffff, TRUE),
  67
  68   /* We have a gap in the reloc numbers here.
  69      R_386_standard counts the number up to this point, and
  70      R_386_ext_offset is the value to subtract from a reloc type of
  71      R_386_16 thru R_386_PC8 to form an index into this table.  */
  72 #define R_386_standard (R_386_GOTPC + 1)
  73 #define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
  74
  75   /* These relocs are a GNU extension.  */
  76   HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  77         bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
  78         TRUE, 0xffffffff, 0xffffffff, FALSE),
  79   HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  80         bfd_elf_generic_reloc, "R_386_TLS_IE",
  81         TRUE, 0xffffffff, 0xffffffff, FALSE),
  82   HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  83         bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
  84         TRUE, 0xffffffff, 0xffffffff, FALSE),
  85   HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  86         bfd_elf_generic_reloc, "R_386_TLS_LE",
  87         TRUE, 0xffffffff, 0xffffffff, FALSE),
  88   HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  89         bfd_elf_generic_reloc, "R_386_TLS_GD",
  90         TRUE, 0xffffffff, 0xffffffff, FALSE),
  91   HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  92         bfd_elf_generic_reloc, "R_386_TLS_LDM",
  93         TRUE, 0xffffffff, 0xffffffff, FALSE),
  94   HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
  95         bfd_elf_generic_reloc, "R_386_16",
  96         TRUE, 0xffff, 0xffff, FALSE),
  97   HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
  98         bfd_elf_generic_reloc, "R_386_PC16",
  99         TRUE, 0xffff, 0xffff, TRUE),
 100   HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
 101         bfd_elf_generic_reloc, "R_386_8",
 102         TRUE, 0xff, 0xff, FALSE),
 103   HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
 104         bfd_elf_generic_reloc, "R_386_PC8",
 105         TRUE, 0xff, 0xff, TRUE),
 106
 107 #define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
 108 #define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
 109   /* These are common with Solaris TLS implementation.  */
 110   HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 111         bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
 112         TRUE, 0xffffffff, 0xffffffff, FALSE),
 113   HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 114         bfd_elf_generic_reloc, "R_386_TLS_IE_32",
 115         TRUE, 0xffffffff, 0xffffffff, FALSE),
 116   HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 117         bfd_elf_generic_reloc, "R_386_TLS_LE_32",
 118         TRUE, 0xffffffff, 0xffffffff, FALSE),
 119   HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 120         bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
 121         TRUE, 0xffffffff, 0xffffffff, FALSE),
 122   HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 123         bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
 124         TRUE, 0xffffffff, 0xffffffff, FALSE),
 125   HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 126         bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
 127         TRUE, 0xffffffff, 0xffffffff, FALSE),
 128
 129   /* Another gap.  */
 130 #define R_386_tls (R_386_TLS_TPOFF32 + 1 - R_386_tls_offset)
 131 #define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_tls)
 132
 133 /* GNU extension to record C++ vtable hierarchy.  */
 134   HOWTO (R_386_GNU_VTINHERIT,   /* type */
 135          0,                     /* rightshift */
 136          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 137          0,                     /* bitsize */
 138          FALSE,                 /* pc_relative */
 139          0,                     /* bitpos */
 140          complain_overflow_dont, /* complain_on_overflow */
 141          NULL,                  /* special_function */
 142          "R_386_GNU_VTINHERIT", /* name */
 143          FALSE,                 /* partial_inplace */
 144          0,                     /* src_mask */
 145          0,                     /* dst_mask */
 146          FALSE),                /* pcrel_offset */
 147
 148 /* GNU extension to record C++ vtable member usage.  */
 149   HOWTO (R_386_GNU_VTENTRY,     /* type */
 150          0,                     /* rightshift */
 151          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 152          0,                     /* bitsize */
 153          FALSE,                 /* pc_relative */
 154          0,                     /* bitpos */
 155          complain_overflow_dont, /* complain_on_overflow */
 156          _bfd_elf_rel_vtable_reloc_fn, /* special_function */
 157          "R_386_GNU_VTENTRY",   /* name */
 158          FALSE,                 /* partial_inplace */
 159          0,                     /* src_mask */
 160          0,                     /* dst_mask */
 161          FALSE)                 /* pcrel_offset */
 162
 163 #define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
 164
 165 };
 166
 167 #ifdef DEBUG_GEN_RELOC
 168 #define TRACE(str) \
 169   fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
 170 #else
 171 #define TRACE(str)
 172 #endif
 173
 174 static reloc_howto_type *
 175 elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
 176                             bfd_reloc_code_real_type code)
 177 {
 178   switch (code)
 179     {
 180     case BFD_RELOC_NONE:
 181       TRACE ("BFD_RELOC_NONE");
 182       return &elf_howto_table[R_386_NONE];
 183
 184     case BFD_RELOC_32:
 185       TRACE ("BFD_RELOC_32");
 186       return &elf_howto_table[R_386_32];
 187
 188     case BFD_RELOC_CTOR:
 189       TRACE ("BFD_RELOC_CTOR");
 190       return &elf_howto_table[R_386_32];
 191
 192     case BFD_RELOC_32_PCREL:
 193       TRACE ("BFD_RELOC_PC32");
 194       return &elf_howto_table[R_386_PC32];
 195
 196     case BFD_RELOC_386_GOT32:
 197       TRACE ("BFD_RELOC_386_GOT32");
 198       return &elf_howto_table[R_386_GOT32];
 199
 200     case BFD_RELOC_386_PLT32:
 201       TRACE ("BFD_RELOC_386_PLT32");
 202       return &elf_howto_table[R_386_PLT32];
 203
 204     case BFD_RELOC_386_COPY:
 205       TRACE ("BFD_RELOC_386_COPY");
 206       return &elf_howto_table[R_386_COPY];
 207
 208     case BFD_RELOC_386_GLOB_DAT:
 209       TRACE ("BFD_RELOC_386_GLOB_DAT");
 210       return &elf_howto_table[R_386_GLOB_DAT];
 211
 212     case BFD_RELOC_386_JUMP_SLOT:
 213       TRACE ("BFD_RELOC_386_JUMP_SLOT");
 214       return &elf_howto_table[R_386_JUMP_SLOT];
 215
 216     case BFD_RELOC_386_RELATIVE:
 217       TRACE ("BFD_RELOC_386_RELATIVE");
 218       return &elf_howto_table[R_386_RELATIVE];
 219
 220     case BFD_RELOC_386_GOTOFF:
 221       TRACE ("BFD_RELOC_386_GOTOFF");
 222       return &elf_howto_table[R_386_GOTOFF];
 223
 224     case BFD_RELOC_386_GOTPC:
 225       TRACE ("BFD_RELOC_386_GOTPC");
 226       return &elf_howto_table[R_386_GOTPC];
 227
 228       /* These relocs are a GNU extension.  */
 229     case BFD_RELOC_386_TLS_TPOFF:
 230       TRACE ("BFD_RELOC_386_TLS_TPOFF");
 231       return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
 232
 233     case BFD_RELOC_386_TLS_IE:
 234       TRACE ("BFD_RELOC_386_TLS_IE");
 235       return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
 236
 237     case BFD_RELOC_386_TLS_GOTIE:
 238       TRACE ("BFD_RELOC_386_TLS_GOTIE");
 239       return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
 240
 241     case BFD_RELOC_386_TLS_LE:
 242       TRACE ("BFD_RELOC_386_TLS_LE");
 243       return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
 244
 245     case BFD_RELOC_386_TLS_GD:
 246       TRACE ("BFD_RELOC_386_TLS_GD");
 247       return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
 248
 249     case BFD_RELOC_386_TLS_LDM:
 250       TRACE ("BFD_RELOC_386_TLS_LDM");
 251       return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
 252
 253     case BFD_RELOC_16:
 254       TRACE ("BFD_RELOC_16");
 255       return &elf_howto_table[R_386_16 - R_386_ext_offset];
 256
 257     case BFD_RELOC_16_PCREL:
 258       TRACE ("BFD_RELOC_16_PCREL");
 259       return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
 260
 261     case BFD_RELOC_8:
 262       TRACE ("BFD_RELOC_8");
 263       return &elf_howto_table[R_386_8 - R_386_ext_offset];
 264
 265     case BFD_RELOC_8_PCREL:
 266       TRACE ("BFD_RELOC_8_PCREL");
 267       return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
 268
 269     /* Common with Sun TLS implementation.  */
 270     case BFD_RELOC_386_TLS_LDO_32:
 271       TRACE ("BFD_RELOC_386_TLS_LDO_32");
 272       return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
 273
 274     case BFD_RELOC_386_TLS_IE_32:
 275       TRACE ("BFD_RELOC_386_TLS_IE_32");
 276       return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
 277
 278     case BFD_RELOC_386_TLS_LE_32:
 279       TRACE ("BFD_RELOC_386_TLS_LE_32");
 280       return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
 281
 282     case BFD_RELOC_386_TLS_DTPMOD32:
 283       TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
 284       return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
 285
 286     case BFD_RELOC_386_TLS_DTPOFF32:
 287       TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
 288       return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
 289
 290     case BFD_RELOC_386_TLS_TPOFF32:
 291       TRACE ("BFD_RELOC_386_TLS_TPOFF32");
 292       return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
 293
 294     case BFD_RELOC_VTABLE_INHERIT:
 295       TRACE ("BFD_RELOC_VTABLE_INHERIT");
 296       return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
 297
 298     case BFD_RELOC_VTABLE_ENTRY:
 299       TRACE ("BFD_RELOC_VTABLE_ENTRY");
 300       return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
 301
 302     default:
 303       break;
 304     }
 305
 306   TRACE ("Unknown");
 307   return 0;
 308 }
 309
 310 static void
 311 elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
 312                             arelent *cache_ptr,
 313                             Elf_Internal_Rela *dst)
 314 {
 315   unsigned int r_type = ELF32_R_TYPE (dst->r_info);
 316   unsigned int indx;
 317
 318   if ((indx = r_type) >= R_386_standard
 319       && ((indx = r_type - R_386_ext_offset) - R_386_standard
 320           >= R_386_ext - R_386_standard)
 321       && ((indx = r_type - R_386_tls_offset) - R_386_ext
 322           >= R_386_tls - R_386_ext)
 323       && ((indx = r_type - R_386_vt_offset) - R_386_tls
 324           >= R_386_vt - R_386_tls))
 325     {
 326       (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
 327                              abfd, (int) r_type);
 328       indx = R_386_NONE;
 329     }
 330   cache_ptr->howto = &elf_howto_table[indx];
 331 }
 332
 333 /* Return whether a symbol name implies a local label.  The UnixWare
 334    2.1 cc generates temporary symbols that start with .X, so we
 335    recognize them here.  FIXME: do other SVR4 compilers also use .X?.
 336    If so, we should move the .X recognition into
 337    _bfd_elf_is_local_label_name.  */
 338
 339 static bfd_boolean
 340 elf_i386_is_local_label_name (bfd *abfd, const char *name)
 341 {
 342   if (name[0] == '.' && name[1] == 'X')
 343     return TRUE;
 344
 345   return _bfd_elf_is_local_label_name (abfd, name);
 346 }
 347 \f
 348 /* Support for core dump NOTE sections.  */
 349
 350 static bfd_boolean
 351 elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
 352 {
 353   int offset;
 354   size_t size;
 355
 356   if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
 357     {
 358       int pr_version = bfd_get_32 (abfd, note->descdata);
 359
 360       if (pr_version != 1)
 361         return FALSE;
 362
 363       /* pr_cursig */
 364       elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20);
 365
 366       /* pr_pid */
 367       elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
 368
 369       /* pr_reg */
 370       offset = 28;
 371       size = bfd_get_32 (abfd, note->descdata + 8);
 372     }
 373   else
 374     {
 375       switch (note->descsz)
 376         {
 377         default:
 378           return FALSE;
 379
 380         case 144:               /* Linux/i386 */
 381           /* pr_cursig */
 382           elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
 383
 384           /* pr_pid */
 385           elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
 386
 387           /* pr_reg */
 388           offset = 72;
 389           size = 68;
 390
 391           break;
 392         }
 393     }
 394
 395   /* Make a ".reg/999" section.  */
 396   return _bfd_elfcore_make_pseudosection (abfd, ".reg",
 397                                           size, note->descpos + offset);
 398 }
 399
 400 static bfd_boolean
 401 elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
 402 {
 403   if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
 404     {
 405       int pr_version = bfd_get_32 (abfd, note->descdata);
 406
 407       if (pr_version != 1)
 408         return FALSE;
 409
 410       elf_tdata (abfd)->core_program
 411         = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
 412       elf_tdata (abfd)->core_command
 413         = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
 414     }
 415   else
 416     {
 417       switch (note->descsz)
 418         {
 419         default:
 420           return FALSE;
 421
 422         case 124:               /* Linux/i386 elf_prpsinfo.  */
 423           elf_tdata (abfd)->core_program
 424             = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
 425           elf_tdata (abfd)->core_command
 426             = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
 427         }
 428     }
 429
 430   /* Note that for some reason, a spurious space is tacked
 431      onto the end of the args in some (at least one anyway)
 432      implementations, so strip it off if it exists.  */
 433   {
 434     char *command = elf_tdata (abfd)->core_command;
 435     int n = strlen (command);
 436
 437     if (0 < n && command[n - 1] == ' ')
 438       command[n - 1] = '\0';
 439   }
 440
 441   return TRUE;
 442 }
 443 \f
 444 /* Functions for the i386 ELF linker.
 445
 446    In order to gain some understanding of code in this file without
 447    knowing all the intricate details of the linker, note the
 448    following:
 449
 450    Functions named elf_i386_* are called by external routines, other
 451    functions are only called locally.  elf_i386_* functions appear
 452    in this file more or less in the order in which they are called
 453    from external routines.  eg. elf_i386_check_relocs is called
 454    early in the link process, elf_i386_finish_dynamic_sections is
 455    one of the last functions.  */
 456
 457
 458 /* The name of the dynamic interpreter.  This is put in the .interp
 459    section.  */
 460
 461 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
 462
 463 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
 464    copying dynamic variables from a shared lib into an app's dynbss
 465    section, and instead use a dynamic relocation to point into the
 466    shared lib.  */
 467 #define ELIMINATE_COPY_RELOCS 1
 468
 469 /* The size in bytes of an entry in the procedure linkage table.  */
 470
 471 #define PLT_ENTRY_SIZE 16
 472
 473 /* The first entry in an absolute procedure linkage table looks like
 474    this.  See the SVR4 ABI i386 supplement to see how this works.  */
 475
 476 static const bfd_byte elf_i386_plt0_entry[PLT_ENTRY_SIZE] =
 477 {
 478   0xff, 0x35,   /* pushl contents of address */
 479   0, 0, 0, 0,   /* replaced with address of .got + 4.  */
 480   0xff, 0x25,   /* jmp indirect */
 481   0, 0, 0, 0,   /* replaced with address of .got + 8.  */
 482   0, 0, 0, 0    /* pad out to 16 bytes.  */
 483 };
 484
 485 /* Subsequent entries in an absolute procedure linkage table look like
 486    this.  */
 487
 488 static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
 489 {
 490   0xff, 0x25,   /* jmp indirect */
 491   0, 0, 0, 0,   /* replaced with address of this symbol in .got.  */
 492   0x68,         /* pushl immediate */
 493   0, 0, 0, 0,   /* replaced with offset into relocation table.  */
 494   0xe9,         /* jmp relative */
 495   0, 0, 0, 0    /* replaced with offset to start of .plt.  */
 496 };
 497
 498 /* The first entry in a PIC procedure linkage table look like this.  */
 499
 500 static const bfd_byte elf_i386_pic_plt0_entry[PLT_ENTRY_SIZE] =
 501 {
 502   0xff, 0xb3, 4, 0, 0, 0,       /* pushl 4(%ebx) */
 503   0xff, 0xa3, 8, 0, 0, 0,       /* jmp *8(%ebx) */
 504   0, 0, 0, 0                    /* pad out to 16 bytes.  */
 505 };
 506
 507 /* Subsequent entries in a PIC procedure linkage table look like this.  */
 508
 509 static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
 510 {
 511   0xff, 0xa3,   /* jmp *offset(%ebx) */
 512   0, 0, 0, 0,   /* replaced with offset of this symbol in .got.  */
 513   0x68,         /* pushl immediate */
 514   0, 0, 0, 0,   /* replaced with offset into relocation table.  */
 515   0xe9,         /* jmp relative */
 516   0, 0, 0, 0    /* replaced with offset to start of .plt.  */
 517 };
 518
 519 /* The i386 linker needs to keep track of the number of relocs that it
 520    decides to copy as dynamic relocs in check_relocs for each symbol.
 521    This is so that it can later discard them if they are found to be
 522    unnecessary.  We store the information in a field extending the
 523    regular ELF linker hash table.  */
 524
 525 struct elf_i386_dyn_relocs
 526 {
 527   struct elf_i386_dyn_relocs *next;
 528
 529   /* The input section of the reloc.  */
 530   asection *sec;
 531
 532   /* Total number of relocs copied for the input section.  */
 533   bfd_size_type count;
 534
 535   /* Number of pc-relative relocs copied for the input section.  */
 536   bfd_size_type pc_count;
 537 };
 538
 539 /* i386 ELF linker hash entry.  */
 540
 541 struct elf_i386_link_hash_entry
 542 {
 543   struct elf_link_hash_entry elf;
 544
 545   /* Track dynamic relocs copied for this symbol.  */
 546   struct elf_i386_dyn_relocs *dyn_relocs;
 547
 548 #define GOT_UNKNOWN     0
 549 #define GOT_NORMAL      1
 550 #define GOT_TLS_GD      2
 551 #define GOT_TLS_IE      4
 552 #define GOT_TLS_IE_POS  5
 553 #define GOT_TLS_IE_NEG  6
 554 #define GOT_TLS_IE_BOTH 7
 555   unsigned char tls_type;
 556 };
 557
 558 #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
 559
 560 struct elf_i386_obj_tdata
 561 {
 562   struct elf_obj_tdata root;
 563
 564   /* tls_type for each local got entry.  */
 565   char *local_got_tls_type;
 566 };
 567
 568 #define elf_i386_tdata(abfd) \
 569   ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
 570
 571 #define elf_i386_local_got_tls_type(abfd) \
 572   (elf_i386_tdata (abfd)->local_got_tls_type)
 573
 574 static bfd_boolean
 575 elf_i386_mkobject (bfd *abfd)
 576 {
 577   bfd_size_type amt = sizeof (struct elf_i386_obj_tdata);
 578   abfd->tdata.any = bfd_zalloc (abfd, amt);
 579   if (abfd->tdata.any == NULL)
 580     return FALSE;
 581   return TRUE;
 582 }
 583
 584 /* i386 ELF linker hash table.  */
 585
 586 struct elf_i386_link_hash_table
 587 {
 588   struct elf_link_hash_table elf;
 589
 590   /* Short-cuts to get to dynamic linker sections.  */
 591   asection *sgot;
 592   asection *sgotplt;
 593   asection *srelgot;
 594   asection *splt;
 595   asection *srelplt;
 596   asection *sdynbss;
 597   asection *srelbss;
 598
 599   union {
 600     bfd_signed_vma refcount;
 601     bfd_vma offset;
 602   } tls_ldm_got;
 603
 604   /* Small local sym to section mapping cache.  */
 605   struct sym_sec_cache sym_sec;
 606 };
 607
 608 /* Get the i386 ELF linker hash table from a link_info structure.  */
 609
 610 #define elf_i386_hash_table(p) \
 611   ((struct elf_i386_link_hash_table *) ((p)->hash))
 612
 613 /* Create an entry in an i386 ELF linker hash table.  */
 614
 615 static struct bfd_hash_entry *
 616 link_hash_newfunc (struct bfd_hash_entry *entry,
 617                    struct bfd_hash_table *table,
 618                    const char *string)
 619 {
 620   /* Allocate the structure if it has not already been allocated by a
 621      subclass.  */
 622   if (entry == NULL)
 623     {
 624       entry = bfd_hash_allocate (table,
 625                                  sizeof (struct elf_i386_link_hash_entry));
 626       if (entry == NULL)
 627         return entry;
 628     }
 629
 630   /* Call the allocation method of the superclass.  */
 631   entry = _bfd_elf_link_hash_newfunc (entry, table, string);
 632   if (entry != NULL)
 633     {
 634       struct elf_i386_link_hash_entry *eh;
 635
 636       eh = (struct elf_i386_link_hash_entry *) entry;
 637       eh->dyn_relocs = NULL;
 638       eh->tls_type = GOT_UNKNOWN;
 639     }
 640
 641   return entry;
 642 }
 643
 644 /* Create an i386 ELF linker hash table.  */
 645
 646 static struct bfd_link_hash_table *
 647 elf_i386_link_hash_table_create (bfd *abfd)
 648 {
 649   struct elf_i386_link_hash_table *ret;
 650   bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
 651
 652   ret = bfd_malloc (amt);
 653   if (ret == NULL)
 654     return NULL;
 655
 656   if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc))
 657     {
 658       free (ret);
 659       return NULL;
 660     }
 661
 662   ret->sgot = NULL;
 663   ret->sgotplt = NULL;
 664   ret->srelgot = NULL;
 665   ret->splt = NULL;
 666   ret->srelplt = NULL;
 667   ret->sdynbss = NULL;
 668   ret->srelbss = NULL;
 669   ret->tls_ldm_got.refcount = 0;
 670   ret->sym_sec.abfd = NULL;
 671
 672   return &ret->elf.root;
 673 }
 674
 675 /* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up
 676    shortcuts to them in our hash table.  */
 677
 678 static bfd_boolean
 679 create_got_section (bfd *dynobj, struct bfd_link_info *info)
 680 {
 681   struct elf_i386_link_hash_table *htab;
 682
 683   if (! _bfd_elf_create_got_section (dynobj, info))
 684     return FALSE;
 685
 686   htab = elf_i386_hash_table (info);
 687   htab->sgot = bfd_get_section_by_name (dynobj, ".got");
 688   htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
 689   if (!htab->sgot || !htab->sgotplt)
 690     abort ();
 691
 692   htab->srelgot = bfd_make_section (dynobj, ".rel.got");
 693   if (htab->srelgot == NULL
 694       || ! bfd_set_section_flags (dynobj, htab->srelgot,
 695                                   (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
 696                                    | SEC_IN_MEMORY | SEC_LINKER_CREATED
 697                                    | SEC_READONLY))
 698       || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
 699     return FALSE;
 700   return TRUE;
 701 }
 702
 703 /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
 704    .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
 705    hash table.  */
 706
 707 static bfd_boolean
 708 elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
 709 {
 710   struct elf_i386_link_hash_table *htab;
 711
 712   htab = elf_i386_hash_table (info);
 713   if (!htab->sgot && !create_got_section (dynobj, info))
 714     return FALSE;
 715
 716   if (!_bfd_elf_create_dynamic_sections (dynobj, info))
 717     return FALSE;
 718
 719   htab->splt = bfd_get_section_by_name (dynobj, ".plt");
 720   htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt");
 721   htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
 722   if (!info->shared)
 723     htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
 724
 725   if (!htab->splt || !htab->srelplt || !htab->sdynbss
 726       || (!info->shared && !htab->srelbss))
 727     abort ();
 728
 729   return TRUE;
 730 }
 731
 732 /* Copy the extra info we tack onto an elf_link_hash_entry.  */
 733
 734 static void
 735 elf_i386_copy_indirect_symbol (const struct elf_backend_data *bed,
 736                                struct elf_link_hash_entry *dir,
 737                                struct elf_link_hash_entry *ind)
 738 {
 739   struct elf_i386_link_hash_entry *edir, *eind;
 740
 741   edir = (struct elf_i386_link_hash_entry *) dir;
 742   eind = (struct elf_i386_link_hash_entry *) ind;
 743
 744   if (eind->dyn_relocs != NULL)
 745     {
 746       if (edir->dyn_relocs != NULL)
 747         {
 748           struct elf_i386_dyn_relocs **pp;
 749           struct elf_i386_dyn_relocs *p;
 750
 751           if (ind->root.type == bfd_link_hash_indirect)
 752             abort ();
 753
 754           /* Add reloc counts against the weak sym to the strong sym
 755              list.  Merge any entries against the same section.  */
 756           for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
 757             {
 758               struct elf_i386_dyn_relocs *q;
 759
 760               for (q = edir->dyn_relocs; q != NULL; q = q->next)
 761                 if (q->sec == p->sec)
 762                   {
 763                     q->pc_count += p->pc_count;
 764                     q->count += p->count;
 765                     *pp = p->next;
 766                     break;
 767                   }
 768               if (q == NULL)
 769                 pp = &p->next;
 770             }
 771           *pp = edir->dyn_relocs;
 772         }
 773
 774       edir->dyn_relocs = eind->dyn_relocs;
 775       eind->dyn_relocs = NULL;
 776     }
 777
 778   if (ind->root.type == bfd_link_hash_indirect
 779       && dir->got.refcount <= 0)
 780     {
 781       edir->tls_type = eind->tls_type;
 782       eind->tls_type = GOT_UNKNOWN;
 783     }
 784
 785   if (ELIMINATE_COPY_RELOCS
 786       && ind->root.type != bfd_link_hash_indirect
 787       && dir->dynamic_adjusted)
 788     {
 789       /* If called to transfer flags for a weakdef during processing
 790          of elf_adjust_dynamic_symbol, don't copy non_got_ref.
 791          We clear it ourselves for ELIMINATE_COPY_RELOCS.  */
 792       dir->ref_dynamic |= ind->ref_dynamic;
 793       dir->ref_regular |= ind->ref_regular;
 794       dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
 795       dir->needs_plt |= ind->needs_plt;
 796       dir->pointer_equality_needed |= ind->pointer_equality_needed;
 797     }
 798   else
 799     _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
 800 }
 801
 802 static int
 803 elf_i386_tls_transition (struct bfd_link_info *info, int r_type, int is_local)
 804 {
 805   if (info->shared)
 806     return r_type;
 807
 808   switch (r_type)
 809     {
 810     case R_386_TLS_GD:
 811     case R_386_TLS_IE_32:
 812       if (is_local)
 813         return R_386_TLS_LE_32;
 814       return R_386_TLS_IE_32;
 815     case R_386_TLS_IE:
 816     case R_386_TLS_GOTIE:
 817       if (is_local)
 818         return R_386_TLS_LE_32;
 819       return r_type;
 820     case R_386_TLS_LDM:
 821       return R_386_TLS_LE_32;
 822     }
 823
 824   return r_type;
 825 }
 826
 827 /* Look through the relocs for a section during the first phase, and
 828    calculate needed space in the global offset table, procedure linkage
 829    table, and dynamic reloc sections.  */
 830
 831 static bfd_boolean
 832 elf_i386_check_relocs (bfd *abfd,
 833                        struct bfd_link_info *info,
 834                        asection *sec,
 835                        const Elf_Internal_Rela *relocs)
 836 {
 837   struct elf_i386_link_hash_table *htab;
 838   Elf_Internal_Shdr *symtab_hdr;
 839   struct elf_link_hash_entry **sym_hashes;
 840   const Elf_Internal_Rela *rel;
 841   const Elf_Internal_Rela *rel_end;
 842   asection *sreloc;
 843
 844   if (info->relocatable)
 845     return TRUE;
 846
 847   htab = elf_i386_hash_table (info);
 848   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
 849   sym_hashes = elf_sym_hashes (abfd);
 850
 851   sreloc = NULL;
 852
 853   rel_end = relocs + sec->reloc_count;
 854   for (rel = relocs; rel < rel_end; rel++)
 855     {
 856       unsigned int r_type;
 857       unsigned long r_symndx;
 858       struct elf_link_hash_entry *h;
 859
 860       r_symndx = ELF32_R_SYM (rel->r_info);
 861       r_type = ELF32_R_TYPE (rel->r_info);
 862
 863       if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
 864         {
 865           (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
 866                                  abfd,
 867                                  r_symndx);
 868           return FALSE;
 869         }
 870
 871       if (r_symndx < symtab_hdr->sh_info)
 872         h = NULL;
 873       else
 874         h = sym_hashes[r_symndx - symtab_hdr->sh_info];
 875
 876       r_type = elf_i386_tls_transition (info, r_type, h == NULL);
 877
 878       switch (r_type)
 879         {
 880         case R_386_TLS_LDM:
 881           htab->tls_ldm_got.refcount += 1;
 882           goto create_got;
 883
 884         case R_386_PLT32:
 885           /* This symbol requires a procedure linkage table entry.  We
 886              actually build the entry in adjust_dynamic_symbol,
 887              because this might be a case of linking PIC code which is
 888              never referenced by a dynamic object, in which case we
 889              don't need to generate a procedure linkage table entry
 890              after all.  */
 891
 892           /* If this is a local symbol, we resolve it directly without
 893              creating a procedure linkage table entry.  */
 894           if (h == NULL)
 895             continue;
 896
 897           h->needs_plt = 1;
 898           h->plt.refcount += 1;
 899           break;
 900
 901         case R_386_TLS_IE_32:
 902         case R_386_TLS_IE:
 903         case R_386_TLS_GOTIE:
 904           if (info->shared)
 905             info->flags |= DF_STATIC_TLS;
 906           /* Fall through */
 907
 908         case R_386_GOT32:
 909         case R_386_TLS_GD:
 910           /* This symbol requires a global offset table entry.  */
 911           {
 912             int tls_type, old_tls_type;
 913
 914             switch (r_type)
 915               {
 916               default:
 917               case R_386_GOT32: tls_type = GOT_NORMAL; break;
 918               case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
 919               case R_386_TLS_IE_32:
 920                 if (ELF32_R_TYPE (rel->r_info) == r_type)
 921                   tls_type = GOT_TLS_IE_NEG;
 922                 else
 923                   /* If this is a GD->IE transition, we may use either of
 924                      R_386_TLS_TPOFF and R_386_TLS_TPOFF32.  */
 925                   tls_type = GOT_TLS_IE;
 926                 break;
 927               case R_386_TLS_IE:
 928               case R_386_TLS_GOTIE:
 929                 tls_type = GOT_TLS_IE_POS; break;
 930               }
 931
 932             if (h != NULL)
 933               {
 934                 h->got.refcount += 1;
 935                 old_tls_type = elf_i386_hash_entry(h)->tls_type;
 936               }
 937             else
 938               {
 939                 bfd_signed_vma *local_got_refcounts;
 940
 941                 /* This is a global offset table entry for a local symbol.  */
 942                 local_got_refcounts = elf_local_got_refcounts (abfd);
 943                 if (local_got_refcounts == NULL)
 944                   {
 945                     bfd_size_type size;
 946
 947                     size = symtab_hdr->sh_info;
 948                     size *= (sizeof (bfd_signed_vma) + sizeof(char));
 949                     local_got_refcounts = bfd_zalloc (abfd, size);
 950                     if (local_got_refcounts == NULL)
 951                       return FALSE;
 952                     elf_local_got_refcounts (abfd) = local_got_refcounts;
 953                     elf_i386_local_got_tls_type (abfd)
 954                       = (char *) (local_got_refcounts + symtab_hdr->sh_info);
 955                   }
 956                 local_got_refcounts[r_symndx] += 1;
 957                 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
 958               }
 959
 960             if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
 961               tls_type |= old_tls_type;
 962             /* If a TLS symbol is accessed using IE at least once,
 963                there is no point to use dynamic model for it.  */
 964             else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
 965                      && (old_tls_type != GOT_TLS_GD
 966                          || (tls_type & GOT_TLS_IE) == 0))
 967               {
 968                 if ((old_tls_type & GOT_TLS_IE) && tls_type == GOT_TLS_GD)
 969                   tls_type = old_tls_type;
 970                 else
 971                   {
 972                     (*_bfd_error_handler)
 973                       (_("%B: `%s' accessed both as normal and "
 974                          "thread local symbol"),
 975                        abfd,
 976                        h ? h->root.root.string : "<local>");
 977                     return FALSE;
 978                   }
 979               }
 980
 981             if (old_tls_type != tls_type)
 982               {
 983                 if (h != NULL)
 984                   elf_i386_hash_entry (h)->tls_type = tls_type;
 985                 else
 986                   elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
 987               }
 988           }
 989           /* Fall through */
 990
 991         case R_386_GOTOFF:
 992         case R_386_GOTPC:
 993         create_got:
 994           if (htab->sgot == NULL)
 995             {
 996               if (htab->elf.dynobj == NULL)
 997                 htab->elf.dynobj = abfd;
 998               if (!create_got_section (htab->elf.dynobj, info))
 999                 return FALSE;
1000             }
1001           if (r_type != R_386_TLS_IE)
1002             break;
1003           /* Fall through */
1004
1005         case R_386_TLS_LE_32:
1006         case R_386_TLS_LE:
1007           if (!info->shared)
1008             break;
1009           info->flags |= DF_STATIC_TLS;
1010           /* Fall through */
1011
1012         case R_386_32:
1013         case R_386_PC32:
1014           if (h != NULL && !info->shared)
1015             {
1016               /* If this reloc is in a read-only section, we might
1017                  need a copy reloc.  We can't check reliably at this
1018                  stage whether the section is read-only, as input
1019                  sections have not yet been mapped to output sections.
1020                  Tentatively set the flag for now, and correct in
1021                  adjust_dynamic_symbol.  */
1022               h->non_got_ref = 1;
1023
1024               /* We may need a .plt entry if the function this reloc
1025                  refers to is in a shared lib.  */
1026               h->plt.refcount += 1;
1027               if (r_type != R_386_PC32)
1028                 h->pointer_equality_needed = 1;
1029             }
1030
1031           /* If we are creating a shared library, and this is a reloc
1032              against a global symbol, or a non PC relative reloc
1033              against a local symbol, then we need to copy the reloc
1034              into the shared library.  However, if we are linking with
1035              -Bsymbolic, we do not need to copy a reloc against a
1036              global symbol which is defined in an object we are
1037              including in the link (i.e., DEF_REGULAR is set).  At
1038              this point we have not seen all the input files, so it is
1039              possible that DEF_REGULAR is not set now but will be set
1040              later (it is never cleared).  In case of a weak definition,
1041              DEF_REGULAR may be cleared later by a strong definition in
1042              a shared library.  We account for that possibility below by
1043              storing information in the relocs_copied field of the hash
1044              table entry.  A similar situation occurs when creating
1045              shared libraries and symbol visibility changes render the
1046              symbol local.
1047
1048              If on the other hand, we are creating an executable, we
1049              may need to keep relocations for symbols satisfied by a
1050              dynamic library if we manage to avoid copy relocs for the
1051              symbol.  */
1052           if ((info->shared
1053                && (sec->flags & SEC_ALLOC) != 0
1054                && (r_type != R_386_PC32
1055                    || (h != NULL
1056                        && (! info->symbolic
1057                            || h->root.type == bfd_link_hash_defweak
1058                            || !h->def_regular))))
1059               || (ELIMINATE_COPY_RELOCS
1060                   && !info->shared
1061                   && (sec->flags & SEC_ALLOC) != 0
1062                   && h != NULL
1063                   && (h->root.type == bfd_link_hash_defweak
1064                       || !h->def_regular)))
1065             {
1066               struct elf_i386_dyn_relocs *p;
1067               struct elf_i386_dyn_relocs **head;
1068
1069               /* We must copy these reloc types into the output file.
1070                  Create a reloc section in dynobj and make room for
1071                  this reloc.  */
1072               if (sreloc == NULL)
1073                 {
1074                   const char *name;
1075                   bfd *dynobj;
1076                   unsigned int strndx = elf_elfheader (abfd)->e_shstrndx;
1077                   unsigned int shnam = elf_section_data (sec)->rel_hdr.sh_name;
1078
1079                   name = bfd_elf_string_from_elf_section (abfd, strndx, shnam);
1080                   if (name == NULL)
1081                     return FALSE;
1082
1083                   if (strncmp (name, ".rel", 4) != 0
1084                       || strcmp (bfd_get_section_name (abfd, sec),
1085                                  name + 4) != 0)
1086                     {
1087                       (*_bfd_error_handler)
1088                         (_("%B: bad relocation section name `%s\'"),
1089                          abfd, name);
1090                     }
1091
1092                   if (htab->elf.dynobj == NULL)
1093                     htab->elf.dynobj = abfd;
1094
1095                   dynobj = htab->elf.dynobj;
1096                   sreloc = bfd_get_section_by_name (dynobj, name);
1097                   if (sreloc == NULL)
1098                     {
1099                       flagword flags;
1100
1101                       sreloc = bfd_make_section (dynobj, name);
1102                       flags = (SEC_HAS_CONTENTS | SEC_READONLY
1103                                | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1104                       if ((sec->flags & SEC_ALLOC) != 0)
1105                         flags |= SEC_ALLOC | SEC_LOAD;
1106                       if (sreloc == NULL
1107                           || ! bfd_set_section_flags (dynobj, sreloc, flags)
1108                           || ! bfd_set_section_alignment (dynobj, sreloc, 2))
1109                         return FALSE;
1110                     }
1111                   elf_section_data (sec)->sreloc = sreloc;
1112                 }
1113
1114               /* If this is a global symbol, we count the number of
1115                  relocations we need for this symbol.  */
1116               if (h != NULL)
1117                 {
1118                   head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
1119                 }
1120               else
1121                 {
1122                   /* Track dynamic relocs needed for local syms too.
1123                      We really need local syms available to do this
1124                      easily.  Oh well.  */
1125
1126                   asection *s;
1127                   s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
1128                                                  sec, r_symndx);
1129                   if (s == NULL)
1130                     return FALSE;
1131
1132                   head = ((struct elf_i386_dyn_relocs **)
1133                           &elf_section_data (s)->local_dynrel);
1134                 }
1135
1136               p = *head;
1137               if (p == NULL || p->sec != sec)
1138                 {
1139                   bfd_size_type amt = sizeof *p;
1140                   p = bfd_alloc (htab->elf.dynobj, amt);
1141                   if (p == NULL)
1142                     return FALSE;
1143                   p->next = *head;
1144                   *head = p;
1145                   p->sec = sec;
1146                   p->count = 0;
1147                   p->pc_count = 0;
1148                 }
1149
1150               p->count += 1;
1151               if (r_type == R_386_PC32)
1152                 p->pc_count += 1;
1153             }
1154           break;
1155
1156           /* This relocation describes the C++ object vtable hierarchy.
1157              Reconstruct it for later use during GC.  */
1158         case R_386_GNU_VTINHERIT:
1159           if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1160             return FALSE;
1161           break;
1162
1163           /* This relocation describes which C++ vtable entries are actually
1164              used.  Record for later use during GC.  */
1165         case R_386_GNU_VTENTRY:
1166           if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
1167             return FALSE;
1168           break;
1169
1170         default:
1171           break;
1172         }
1173     }
1174
1175   return TRUE;
1176 }
1177
1178 /* Return the section that should be marked against GC for a given
1179    relocation.  */
1180
1181 static asection *
1182 elf_i386_gc_mark_hook (asection *sec,
1183                        struct bfd_link_info *info ATTRIBUTE_UNUSED,
1184                        Elf_Internal_Rela *rel,
1185                        struct elf_link_hash_entry *h,
1186                        Elf_Internal_Sym *sym)
1187 {
1188   if (h != NULL)
1189     {
1190       switch (ELF32_R_TYPE (rel->r_info))
1191         {
1192         case R_386_GNU_VTINHERIT:
1193         case R_386_GNU_VTENTRY:
1194           break;
1195
1196         default:
1197           switch (h->root.type)
1198             {
1199             case bfd_link_hash_defined:
1200             case bfd_link_hash_defweak:
1201               return h->root.u.def.section;
1202
1203             case bfd_link_hash_common:
1204               return h->root.u.c.p->section;
1205
1206             default:
1207               break;
1208             }
1209         }
1210     }
1211   else
1212     return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
1213
1214   return NULL;
1215 }
1216
1217 /* Update the got entry reference counts for the section being removed.  */
1218
1219 static bfd_boolean
1220 elf_i386_gc_sweep_hook (bfd *abfd,
1221                         struct bfd_link_info *info,
1222                         asection *sec,
1223                         const Elf_Internal_Rela *relocs)
1224 {
1225   Elf_Internal_Shdr *symtab_hdr;
1226   struct elf_link_hash_entry **sym_hashes;
1227   bfd_signed_vma *local_got_refcounts;
1228   const Elf_Internal_Rela *rel, *relend;
1229
1230   elf_section_data (sec)->local_dynrel = NULL;
1231
1232   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1233   sym_hashes = elf_sym_hashes (abfd);
1234   local_got_refcounts = elf_local_got_refcounts (abfd);
1235
1236   relend = relocs + sec->reloc_count;
1237   for (rel = relocs; rel < relend; rel++)
1238     {
1239       unsigned long r_symndx;
1240       unsigned int r_type;
1241       struct elf_link_hash_entry *h = NULL;
1242
1243       r_symndx = ELF32_R_SYM (rel->r_info);
1244       if (r_symndx >= symtab_hdr->sh_info)
1245         {
1246           struct elf_i386_link_hash_entry *eh;
1247           struct elf_i386_dyn_relocs **pp;
1248           struct elf_i386_dyn_relocs *p;
1249
1250           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1251           eh = (struct elf_i386_link_hash_entry *) h;
1252
1253           for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1254             if (p->sec == sec)
1255               {
1256                 /* Everything must go for SEC.  */
1257                 *pp = p->next;
1258                 break;
1259               }
1260         }
1261
1262       r_type = ELF32_R_TYPE (rel->r_info);
1263       r_type = elf_i386_tls_transition (info, r_type, h != NULL);
1264       switch (r_type)
1265         {
1266         case R_386_TLS_LDM:
1267           if (elf_i386_hash_table (info)->tls_ldm_got.refcount > 0)
1268             elf_i386_hash_table (info)->tls_ldm_got.refcount -= 1;
1269           break;
1270
1271         case R_386_TLS_GD:
1272         case R_386_TLS_IE_32:
1273         case R_386_TLS_IE:
1274         case R_386_TLS_GOTIE:
1275         case R_386_GOT32:
1276           if (h != NULL)
1277             {
1278               if (h->got.refcount > 0)
1279                 h->got.refcount -= 1;
1280             }
1281           else if (local_got_refcounts != NULL)
1282             {
1283               if (local_got_refcounts[r_symndx] > 0)
1284                 local_got_refcounts[r_symndx] -= 1;
1285             }
1286           break;
1287
1288         case R_386_32:
1289         case R_386_PC32:
1290           if (info->shared)
1291             break;
1292           /* Fall through */
1293
1294         case R_386_PLT32:
1295           if (h != NULL)
1296             {
1297               if (h->plt.refcount > 0)
1298                 h->plt.refcount -= 1;
1299             }
1300           break;
1301
1302         default:
1303           break;
1304         }
1305     }
1306
1307   return TRUE;
1308 }
1309
1310 /* Adjust a symbol defined by a dynamic object and referenced by a
1311    regular object.  The current definition is in some section of the
1312    dynamic object, but we're not including those sections.  We have to
1313    change the definition to something the rest of the link can
1314    understand.  */
1315
1316 static bfd_boolean
1317 elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
1318                                 struct elf_link_hash_entry *h)
1319 {
1320   struct elf_i386_link_hash_table *htab;
1321   asection *s;
1322   unsigned int power_of_two;
1323
1324   /* If this is a function, put it in the procedure linkage table.  We
1325      will fill in the contents of the procedure linkage table later,
1326      when we know the address of the .got section.  */
1327   if (h->type == STT_FUNC
1328       || h->needs_plt)
1329     {
1330       if (h->plt.refcount <= 0
1331           || SYMBOL_CALLS_LOCAL (info, h)
1332           || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1333               && h->root.type == bfd_link_hash_undefweak))
1334         {
1335           /* This case can occur if we saw a PLT32 reloc in an input
1336              file, but the symbol was never referred to by a dynamic
1337              object, or if all references were garbage collected.  In
1338              such a case, we don't actually need to build a procedure
1339              linkage table, and we can just do a PC32 reloc instead.  */
1340           h->plt.offset = (bfd_vma) -1;
1341           h->needs_plt = 0;
1342         }
1343
1344       return TRUE;
1345     }
1346   else
1347     /* It's possible that we incorrectly decided a .plt reloc was
1348        needed for an R_386_PC32 reloc to a non-function sym in
1349        check_relocs.  We can't decide accurately between function and
1350        non-function syms in check-relocs;  Objects loaded later in
1351        the link may change h->type.  So fix it now.  */
1352     h->plt.offset = (bfd_vma) -1;
1353
1354   /* If this is a weak symbol, and there is a real definition, the
1355      processor independent code will have arranged for us to see the
1356      real definition first, and we can just use the same value.  */
1357   if (h->u.weakdef != NULL)
1358     {
1359       BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1360                   || h->u.weakdef->root.type == bfd_link_hash_defweak);
1361       h->root.u.def.section = h->u.weakdef->root.u.def.section;
1362       h->root.u.def.value = h->u.weakdef->root.u.def.value;
1363       if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1364         h->non_got_ref = h->u.weakdef->non_got_ref;
1365       return TRUE;
1366     }
1367
1368   /* This is a reference to a symbol defined by a dynamic object which
1369      is not a function.  */
1370
1371   /* If we are creating a shared library, we must presume that the
1372      only references to the symbol are via the global offset table.
1373      For such cases we need not do anything here; the relocations will
1374      be handled correctly by relocate_section.  */
1375   if (info->shared)
1376     return TRUE;
1377
1378   /* If there are no references to this symbol that do not use the
1379      GOT, we don't need to generate a copy reloc.  */
1380   if (!h->non_got_ref)
1381     return TRUE;
1382
1383   /* If -z nocopyreloc was given, we won't generate them either.  */
1384   if (info->nocopyreloc)
1385     {
1386       h->non_got_ref = 0;
1387       return TRUE;
1388     }
1389
1390   if (ELIMINATE_COPY_RELOCS)
1391     {
1392       struct elf_i386_link_hash_entry * eh;
1393       struct elf_i386_dyn_relocs *p;
1394
1395       eh = (struct elf_i386_link_hash_entry *) h;
1396       for (p = eh->dyn_relocs; p != NULL; p = p->next)
1397         {
1398           s = p->sec->output_section;
1399           if (s != NULL && (s->flags & SEC_READONLY) != 0)
1400             break;
1401         }
1402
1403       /* If we didn't find any dynamic relocs in read-only sections, then
1404          we'll be keeping the dynamic relocs and avoiding the copy reloc.  */
1405       if (p == NULL)
1406         {
1407           h->non_got_ref = 0;
1408           return TRUE;
1409         }
1410     }
1411
1412   /* We must allocate the symbol in our .dynbss section, which will
1413      become part of the .bss section of the executable.  There will be
1414      an entry for this symbol in the .dynsym section.  The dynamic
1415      object will contain position independent code, so all references
1416      from the dynamic object to this symbol will go through the global
1417      offset table.  The dynamic linker will use the .dynsym entry to
1418      determine the address it must put in the global offset table, so
1419      both the dynamic object and the regular object will refer to the
1420      same memory location for the variable.  */
1421
1422   htab = elf_i386_hash_table (info);
1423
1424   /* We must generate a R_386_COPY reloc to tell the dynamic linker to
1425      copy the initial value out of the dynamic object and into the
1426      runtime process image.  */
1427   if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1428     {
1429       htab->srelbss->size += sizeof (Elf32_External_Rel);
1430       h->needs_copy = 1;
1431     }
1432
1433   /* We need to figure out the alignment required for this symbol.  I
1434      have no idea how ELF linkers handle this.  */
1435   power_of_two = bfd_log2 (h->size);
1436   if (power_of_two > 3)
1437     power_of_two = 3;
1438
1439   /* Apply the required alignment.  */
1440   s = htab->sdynbss;
1441   s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
1442   if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
1443     {
1444       if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
1445         return FALSE;
1446     }
1447
1448   /* Define the symbol as being at this point in the section.  */
1449   h->root.u.def.section = s;
1450   h->root.u.def.value = s->size;
1451
1452   /* Increment the section size to make room for the symbol.  */
1453   s->size += h->size;
1454
1455   return TRUE;
1456 }
1457
1458 /* Allocate space in .plt, .got and associated reloc sections for
1459    dynamic relocs.  */
1460
1461 static bfd_boolean
1462 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
1463 {
1464   struct bfd_link_info *info;
1465   struct elf_i386_link_hash_table *htab;
1466   struct elf_i386_link_hash_entry *eh;
1467   struct elf_i386_dyn_relocs *p;
1468
1469   if (h->root.type == bfd_link_hash_indirect)
1470     return TRUE;
1471
1472   if (h->root.type == bfd_link_hash_warning)
1473     /* When warning symbols are created, they **replace** the "real"
1474        entry in the hash table, thus we never get to see the real
1475        symbol in a hash traversal.  So look at it now.  */
1476     h = (struct elf_link_hash_entry *) h->root.u.i.link;
1477
1478   info = (struct bfd_link_info *) inf;
1479   htab = elf_i386_hash_table (info);
1480
1481   if (htab->elf.dynamic_sections_created
1482       && h->plt.refcount > 0)
1483     {
1484       /* Make sure this symbol is output as a dynamic symbol.
1485          Undefined weak syms won't yet be marked as dynamic.  */
1486       if (h->dynindx == -1
1487           && !h->forced_local)
1488         {
1489           if (! bfd_elf_link_record_dynamic_symbol (info, h))
1490             return FALSE;
1491         }
1492
1493       if (info->shared
1494           || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
1495         {
1496           asection *s = htab->splt;
1497
1498           /* If this is the first .plt entry, make room for the special
1499              first entry.  */
1500           if (s->size == 0)
1501             s->size += PLT_ENTRY_SIZE;
1502
1503           h->plt.offset = s->size;
1504
1505           /* If this symbol is not defined in a regular file, and we are
1506              not generating a shared library, then set the symbol to this
1507              location in the .plt.  This is required to make function
1508              pointers compare as equal between the normal executable and
1509              the shared library.  */
1510           if (! info->shared
1511               && !h->def_regular)
1512             {
1513               h->root.u.def.section = s;
1514               h->root.u.def.value = h->plt.offset;
1515             }
1516
1517           /* Make room for this entry.  */
1518           s->size += PLT_ENTRY_SIZE;
1519
1520           /* We also need to make an entry in the .got.plt section, which
1521              will be placed in the .got section by the linker script.  */
1522           htab->sgotplt->size += 4;
1523
1524           /* We also need to make an entry in the .rel.plt section.  */
1525           htab->srelplt->size += sizeof (Elf32_External_Rel);
1526         }
1527       else
1528         {
1529           h->plt.offset = (bfd_vma) -1;
1530           h->needs_plt = 0;
1531         }
1532     }
1533   else
1534     {
1535       h->plt.offset = (bfd_vma) -1;
1536       h->needs_plt = 0;
1537     }
1538
1539   /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
1540      make it a R_386_TLS_LE_32 requiring no TLS entry.  */
1541   if (h->got.refcount > 0
1542       && !info->shared
1543       && h->dynindx == -1
1544       && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
1545     h->got.offset = (bfd_vma) -1;
1546   else if (h->got.refcount > 0)
1547     {
1548       asection *s;
1549       bfd_boolean dyn;
1550       int tls_type = elf_i386_hash_entry(h)->tls_type;
1551
1552       /* Make sure this symbol is output as a dynamic symbol.
1553          Undefined weak syms won't yet be marked as dynamic.  */
1554       if (h->dynindx == -1
1555           && !h->forced_local)
1556         {
1557           if (! bfd_elf_link_record_dynamic_symbol (info, h))
1558             return FALSE;
1559         }
1560
1561       s = htab->sgot;
1562       h->got.offset = s->size;
1563       s->size += 4;
1564       /* R_386_TLS_GD needs 2 consecutive GOT slots.  */
1565       if (tls_type == GOT_TLS_GD || tls_type == GOT_TLS_IE_BOTH)
1566         s->size += 4;
1567       dyn = htab->elf.dynamic_sections_created;
1568       /* R_386_TLS_IE_32 needs one dynamic relocation,
1569          R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
1570          (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
1571          need two), R_386_TLS_GD needs one if local symbol and two if
1572          global.  */
1573       if (tls_type == GOT_TLS_IE_BOTH)
1574         htab->srelgot->size += 2 * sizeof (Elf32_External_Rel);
1575       else if ((tls_type == GOT_TLS_GD && h->dynindx == -1)
1576                || (tls_type & GOT_TLS_IE))
1577         htab->srelgot->size += sizeof (Elf32_External_Rel);
1578       else if (tls_type == GOT_TLS_GD)
1579         htab->srelgot->size += 2 * sizeof (Elf32_External_Rel);
1580       else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1581                 || h->root.type != bfd_link_hash_undefweak)
1582                && (info->shared
1583                    || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
1584         htab->srelgot->size += sizeof (Elf32_External_Rel);
1585     }
1586   else
1587     h->got.offset = (bfd_vma) -1;
1588
1589   eh = (struct elf_i386_link_hash_entry *) h;
1590   if (eh->dyn_relocs == NULL)
1591     return TRUE;
1592
1593   /* In the shared -Bsymbolic case, discard space allocated for
1594      dynamic pc-relative relocs against symbols which turn out to be
1595      defined in regular objects.  For the normal shared case, discard
1596      space for pc-relative relocs that have become local due to symbol
1597      visibility changes.  */
1598
1599   if (info->shared)
1600     {
1601       /* The only reloc that uses pc_count is R_386_PC32, which will
1602          appear on a call or on something like ".long foo - .".  We
1603          want calls to protected symbols to resolve directly to the
1604          function rather than going via the plt.  If people want
1605          function pointer comparisons to work as expected then they
1606          should avoid writing assembly like ".long foo - .".  */
1607       if (SYMBOL_CALLS_LOCAL (info, h))
1608         {
1609           struct elf_i386_dyn_relocs **pp;
1610
1611           for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
1612             {
1613               p->count -= p->pc_count;
1614               p->pc_count = 0;
1615               if (p->count == 0)
1616                 *pp = p->next;
1617               else
1618                 pp = &p->next;
1619             }
1620         }
1621
1622       /* Also discard relocs on undefined weak syms with non-default
1623          visibility.  */
1624       if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1625           && h->root.type == bfd_link_hash_undefweak)
1626         eh->dyn_relocs = NULL;
1627     }
1628   else if (ELIMINATE_COPY_RELOCS)
1629     {
1630       /* For the non-shared case, discard space for relocs against
1631          symbols which turn out to need copy relocs or are not
1632          dynamic.  */
1633
1634       if (!h->non_got_ref
1635           && ((h->def_dynamic
1636                && !h->def_regular)
1637               || (htab->elf.dynamic_sections_created
1638                   && (h->root.type == bfd_link_hash_undefweak
1639                       || h->root.type == bfd_link_hash_undefined))))
1640         {
1641           /* Make sure this symbol is output as a dynamic symbol.
1642              Undefined weak syms won't yet be marked as dynamic.  */
1643           if (h->dynindx == -1
1644               && !h->forced_local)
1645             {
1646               if (! bfd_elf_link_record_dynamic_symbol (info, h))
1647                 return FALSE;
1648             }
1649
1650           /* If that succeeded, we know we'll be keeping all the
1651              relocs.  */
1652           if (h->dynindx != -1)
1653             goto keep;
1654         }
1655
1656       eh->dyn_relocs = NULL;
1657
1658     keep: ;
1659     }
1660
1661   /* Finally, allocate space.  */
1662   for (p = eh->dyn_relocs; p != NULL; p = p->next)
1663     {
1664       asection *sreloc = elf_section_data (p->sec)->sreloc;
1665       sreloc->size += p->count * sizeof (Elf32_External_Rel);
1666     }
1667
1668   return TRUE;
1669 }
1670
1671 /* Find any dynamic relocs that apply to read-only sections.  */
1672
1673 static bfd_boolean
1674 readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
1675 {
1676   struct elf_i386_link_hash_entry *eh;
1677   struct elf_i386_dyn_relocs *p;
1678
1679   if (h->root.type == bfd_link_hash_warning)
1680     h = (struct elf_link_hash_entry *) h->root.u.i.link;
1681
1682   eh = (struct elf_i386_link_hash_entry *) h;
1683   for (p = eh->dyn_relocs; p != NULL; p = p->next)
1684     {
1685       asection *s = p->sec->output_section;
1686
1687       if (s != NULL && (s->flags & SEC_READONLY) != 0)
1688         {
1689           struct bfd_link_info *info = (struct bfd_link_info *) inf;
1690
1691           info->flags |= DF_TEXTREL;
1692
1693           /* Not an error, just cut short the traversal.  */
1694           return FALSE;
1695         }
1696     }
1697   return TRUE;
1698 }
1699
1700 /* Set the sizes of the dynamic sections.  */
1701
1702 static bfd_boolean
1703 elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
1704                                 struct bfd_link_info *info)
1705 {
1706   struct elf_i386_link_hash_table *htab;
1707   bfd *dynobj;
1708   asection *s;
1709   bfd_boolean relocs;
1710   bfd *ibfd;
1711
1712   htab = elf_i386_hash_table (info);
1713   dynobj = htab->elf.dynobj;
1714   if (dynobj == NULL)
1715     abort ();
1716
1717   if (htab->elf.dynamic_sections_created)
1718     {
1719       /* Set the contents of the .interp section to the interpreter.  */
1720       if (info->executable)
1721         {
1722           s = bfd_get_section_by_name (dynobj, ".interp");
1723           if (s == NULL)
1724             abort ();
1725           s->size = sizeof ELF_DYNAMIC_INTERPRETER;
1726           s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1727         }
1728     }
1729
1730   /* Set up .got offsets for local syms, and space for local dynamic
1731      relocs.  */
1732   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
1733     {
1734       bfd_signed_vma *local_got;
1735       bfd_signed_vma *end_local_got;
1736       char *local_tls_type;
1737       bfd_size_type locsymcount;
1738       Elf_Internal_Shdr *symtab_hdr;
1739       asection *srel;
1740
1741       if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
1742         continue;
1743
1744       for (s = ibfd->sections; s != NULL; s = s->next)
1745         {
1746           struct elf_i386_dyn_relocs *p;
1747
1748           for (p = *((struct elf_i386_dyn_relocs **)
1749                      &elf_section_data (s)->local_dynrel);
1750                p != NULL;
1751                p = p->next)
1752             {
1753               if (!bfd_is_abs_section (p->sec)
1754                   && bfd_is_abs_section (p->sec->output_section))
1755                 {
1756                   /* Input section has been discarded, either because
1757                      it is a copy of a linkonce section or due to
1758                      linker script /DISCARD/, so we'll be discarding
1759                      the relocs too.  */
1760                 }
1761               else if (p->count != 0)
1762                 {
1763                   srel = elf_section_data (p->sec)->sreloc;
1764                   srel->size += p->count * sizeof (Elf32_External_Rel);
1765                   if ((p->sec->output_section->flags & SEC_READONLY) != 0)
1766                     info->flags |= DF_TEXTREL;
1767                 }
1768             }
1769         }
1770
1771       local_got = elf_local_got_refcounts (ibfd);
1772       if (!local_got)
1773         continue;
1774
1775       symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
1776       locsymcount = symtab_hdr->sh_info;
1777       end_local_got = local_got + locsymcount;
1778       local_tls_type = elf_i386_local_got_tls_type (ibfd);
1779       s = htab->sgot;
1780       srel = htab->srelgot;
1781       for (; local_got < end_local_got; ++local_got, ++local_tls_type)
1782         {
1783           if (*local_got > 0)
1784             {
1785               *local_got = s->size;
1786               s->size += 4;
1787               if (*local_tls_type == GOT_TLS_GD
1788                   || *local_tls_type == GOT_TLS_IE_BOTH)
1789                 s->size += 4;
1790               if (info->shared
1791                   || *local_tls_type == GOT_TLS_GD
1792                   || (*local_tls_type & GOT_TLS_IE))
1793                 {
1794                   if (*local_tls_type == GOT_TLS_IE_BOTH)
1795                     srel->size += 2 * sizeof (Elf32_External_Rel);
1796                   else
1797                     srel->size += sizeof (Elf32_External_Rel);
1798                 }
1799             }
1800           else
1801             *local_got = (bfd_vma) -1;
1802         }
1803     }
1804
1805   if (htab->tls_ldm_got.refcount > 0)
1806     {
1807       /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
1808          relocs.  */
1809       htab->tls_ldm_got.offset = htab->sgot->size;
1810       htab->sgot->size += 8;
1811       htab->srelgot->size += sizeof (Elf32_External_Rel);
1812     }
1813   else
1814     htab->tls_ldm_got.offset = -1;
1815
1816   /* Allocate global sym .plt and .got entries, and space for global
1817      sym dynamic relocs.  */
1818   elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
1819
1820   /* We now have determined the sizes of the various dynamic sections.
1821      Allocate memory for them.  */
1822   relocs = FALSE;
1823   for (s = dynobj->sections; s != NULL; s = s->next)
1824     {
1825       if ((s->flags & SEC_LINKER_CREATED) == 0)
1826         continue;
1827
1828       if (s == htab->splt
1829           || s == htab->sgot
1830           || s == htab->sgotplt)
1831         {
1832           /* Strip this section if we don't need it; see the
1833              comment below.  */
1834         }
1835       else if (strncmp (bfd_get_section_name (dynobj, s), ".rel", 4) == 0)
1836         {
1837           if (s->size != 0 && s != htab->srelplt)
1838             relocs = TRUE;
1839
1840           /* We use the reloc_count field as a counter if we need
1841              to copy relocs into the output file.  */
1842           s->reloc_count = 0;
1843         }
1844       else
1845         {
1846           /* It's not one of our sections, so don't allocate space.  */
1847           continue;
1848         }
1849
1850       if (s->size == 0)
1851         {
1852           /* If we don't need this section, strip it from the
1853              output file.  This is mostly to handle .rel.bss and
1854              .rel.plt.  We must create both sections in
1855              create_dynamic_sections, because they must be created
1856              before the linker maps input sections to output
1857              sections.  The linker does that before
1858              adjust_dynamic_symbol is called, and it is that
1859              function which decides whether anything needs to go
1860              into these sections.  */
1861
1862           _bfd_strip_section_from_output (info, s);
1863           continue;
1864         }
1865
1866       /* Allocate memory for the section contents.  We use bfd_zalloc
1867          here in case unused entries are not reclaimed before the
1868          section's contents are written out.  This should not happen,
1869          but this way if it does, we get a R_386_NONE reloc instead
1870          of garbage.  */
1871       s->contents = bfd_zalloc (dynobj, s->size);
1872       if (s->contents == NULL)
1873         return FALSE;
1874     }
1875
1876   if (htab->elf.dynamic_sections_created)
1877     {
1878       /* Add some entries to the .dynamic section.  We fill in the
1879          values later, in elf_i386_finish_dynamic_sections, but we
1880          must add the entries now so that we get the correct size for
1881          the .dynamic section.  The DT_DEBUG entry is filled in by the
1882          dynamic linker and used by the debugger.  */
1883 #define add_dynamic_entry(TAG, VAL) \
1884   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
1885
1886       if (info->executable)
1887         {
1888           if (!add_dynamic_entry (DT_DEBUG, 0))
1889             return FALSE;
1890         }
1891
1892       if (htab->splt->size != 0)
1893         {
1894           if (!add_dynamic_entry (DT_PLTGOT, 0)
1895               || !add_dynamic_entry (DT_PLTRELSZ, 0)
1896               || !add_dynamic_entry (DT_PLTREL, DT_REL)
1897               || !add_dynamic_entry (DT_JMPREL, 0))
1898             return FALSE;
1899         }
1900
1901       if (relocs)
1902         {
1903           if (!add_dynamic_entry (DT_REL, 0)
1904               || !add_dynamic_entry (DT_RELSZ, 0)
1905               || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
1906             return FALSE;
1907
1908           /* If any dynamic relocs apply to a read-only section,
1909              then we need a DT_TEXTREL entry.  */
1910           if ((info->flags & DF_TEXTREL) == 0)
1911             elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
1912                                     (PTR) info);
1913
1914           if ((info->flags & DF_TEXTREL) != 0)
1915             {
1916               if (!add_dynamic_entry (DT_TEXTREL, 0))
1917                 return FALSE;
1918             }
1919         }
1920     }
1921 #undef add_dynamic_entry
1922
1923   return TRUE;
1924 }
1925
1926 /* Set the correct type for an x86 ELF section.  We do this by the
1927    section name, which is a hack, but ought to work.  */
1928
1929 static bfd_boolean
1930 elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1931                         Elf_Internal_Shdr *hdr,
1932                         asection *sec)
1933 {
1934   register const char *name;
1935
1936   name = bfd_get_section_name (abfd, sec);
1937
1938   /* This is an ugly, but unfortunately necessary hack that is
1939      needed when producing EFI binaries on x86. It tells
1940      elf.c:elf_fake_sections() not to consider ".reloc" as a section
1941      containing ELF relocation info.  We need this hack in order to
1942      be able to generate ELF binaries that can be translated into
1943      EFI applications (which are essentially COFF objects).  Those
1944      files contain a COFF ".reloc" section inside an ELFNN object,
1945      which would normally cause BFD to segfault because it would
1946      attempt to interpret this section as containing relocation
1947      entries for section "oc".  With this hack enabled, ".reloc"
1948      will be treated as a normal data section, which will avoid the
1949      segfault.  However, you won't be able to create an ELFNN binary
1950      with a section named "oc" that needs relocations, but that's
1951      the kind of ugly side-effects you get when detecting section
1952      types based on their names...  In practice, this limitation is
1953      unlikely to bite.  */
1954   if (strcmp (name, ".reloc") == 0)
1955     hdr->sh_type = SHT_PROGBITS;
1956
1957   return TRUE;
1958 }
1959
1960 /* Return the base VMA address which should be subtracted from real addresses
1961    when resolving @dtpoff relocation.
1962    This is PT_TLS segment p_vaddr.  */
1963
1964 static bfd_vma
1965 dtpoff_base (struct bfd_link_info *info)
1966 {
1967   /* If tls_sec is NULL, we should have signalled an error already.  */
1968   if (elf_hash_table (info)->tls_sec == NULL)
1969     return 0;
1970   return elf_hash_table (info)->tls_sec->vma;
1971 }
1972
1973 /* Return the relocation value for @tpoff relocation
1974    if STT_TLS virtual address is ADDRESS.  */
1975
1976 static bfd_vma
1977 tpoff (struct bfd_link_info *info, bfd_vma address)
1978 {
1979   struct elf_link_hash_table *htab = elf_hash_table (info);
1980
1981   /* If tls_sec is NULL, we should have signalled an error already.  */
1982   if (htab->tls_sec == NULL)
1983     return 0;
1984   return htab->tls_size + htab->tls_sec->vma - address;
1985 }
1986
1987 /* Relocate an i386 ELF section.  */
1988
1989 static bfd_boolean
1990 elf_i386_relocate_section (bfd *output_bfd,
1991                            struct bfd_link_info *info,
1992                            bfd *input_bfd,
1993                            asection *input_section,
1994                            bfd_byte *contents,
1995                            Elf_Internal_Rela *relocs,
1996                            Elf_Internal_Sym *local_syms,
1997                            asection **local_sections)
1998 {
1999   struct elf_i386_link_hash_table *htab;
2000   Elf_Internal_Shdr *symtab_hdr;
2001   struct elf_link_hash_entry **sym_hashes;
2002   bfd_vma *local_got_offsets;
2003   Elf_Internal_Rela *rel;
2004   Elf_Internal_Rela *relend;
2005
2006   htab = elf_i386_hash_table (info);
2007   symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2008   sym_hashes = elf_sym_hashes (input_bfd);
2009   local_got_offsets = elf_local_got_offsets (input_bfd);
2010
2011   rel = relocs;
2012   relend = relocs + input_section->reloc_count;
2013   for (; rel < relend; rel++)
2014     {
2015       unsigned int r_type;
2016       reloc_howto_type *howto;
2017       unsigned long r_symndx;
2018       struct elf_link_hash_entry *h;
2019       Elf_Internal_Sym *sym;
2020       asection *sec;
2021       bfd_vma off;
2022       bfd_vma relocation;
2023       bfd_boolean unresolved_reloc;
2024       bfd_reloc_status_type r;
2025       unsigned int indx;
2026       int tls_type;
2027
2028       r_type = ELF32_R_TYPE (rel->r_info);
2029       if (r_type == R_386_GNU_VTINHERIT
2030           || r_type == R_386_GNU_VTENTRY)
2031         continue;
2032
2033       if ((indx = r_type) >= R_386_standard
2034           && ((indx = r_type - R_386_ext_offset) - R_386_standard
2035               >= R_386_ext - R_386_standard)
2036           && ((indx = r_type - R_386_tls_offset) - R_386_ext
2037               >= R_386_tls - R_386_ext))
2038         {
2039           (*_bfd_error_handler)
2040             (_("%B: unrecognized relocation (0x%x) in section `%A'"),
2041              input_bfd, input_section, r_type);
2042           bfd_set_error (bfd_error_bad_value);
2043           return FALSE;
2044         }
2045       howto = elf_howto_table + indx;
2046
2047       r_symndx = ELF32_R_SYM (rel->r_info);
2048
2049       if (info->relocatable)
2050         {
2051           bfd_vma val;
2052           bfd_byte *where;
2053
2054           /* This is a relocatable link.  We don't have to change
2055              anything, unless the reloc is against a section symbol,
2056              in which case we have to adjust according to where the
2057              section symbol winds up in the output section.  */
2058           if (r_symndx >= symtab_hdr->sh_info)
2059             continue;
2060
2061           sym = local_syms + r_symndx;
2062           if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2063             continue;
2064
2065           sec = local_sections[r_symndx];
2066           val = sec->output_offset;
2067           if (val == 0)
2068             continue;
2069
2070           where = contents + rel->r_offset;
2071           switch (howto->size)
2072             {
2073               /* FIXME: overflow checks.  */
2074             case 0:
2075               val += bfd_get_8 (input_bfd, where);
2076               bfd_put_8 (input_bfd, val, where);
2077               break;
2078             case 1:
2079               val += bfd_get_16 (input_bfd, where);
2080               bfd_put_16 (input_bfd, val, where);
2081               break;
2082             case 2:
2083               val += bfd_get_32 (input_bfd, where);
2084               bfd_put_32 (input_bfd, val, where);
2085               break;
2086             default:
2087               abort ();
2088             }
2089           continue;
2090         }
2091
2092       /* This is a final link.  */
2093       h = NULL;
2094       sym = NULL;
2095       sec = NULL;
2096       unresolved_reloc = FALSE;
2097       if (r_symndx < symtab_hdr->sh_info)
2098         {
2099           sym = local_syms + r_symndx;
2100           sec = local_sections[r_symndx];
2101           relocation = (sec->output_section->vma
2102                         + sec->output_offset
2103                         + sym->st_value);
2104           if ((sec->flags & SEC_MERGE)
2105               && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2106             {
2107               asection *msec;
2108               bfd_vma addend;
2109               bfd_byte *where = contents + rel->r_offset;
2110
2111               switch (howto->size)
2112                 {
2113                 case 0:
2114                   addend = bfd_get_8 (input_bfd, where);
2115                   if (howto->pc_relative)
2116                     {
2117                       addend = (addend ^ 0x80) - 0x80;
2118                       addend += 1;
2119                     }
2120                   break;
2121                 case 1:
2122                   addend = bfd_get_16 (input_bfd, where);
2123                   if (howto->pc_relative)
2124                     {
2125                       addend = (addend ^ 0x8000) - 0x8000;
2126                       addend += 2;
2127                     }
2128                   break;
2129                 case 2:
2130                   addend = bfd_get_32 (input_bfd, where);
2131                   if (howto->pc_relative)
2132                     {
2133                       addend = (addend ^ 0x80000000) - 0x80000000;
2134                       addend += 4;
2135                     }
2136                   break;
2137                 default:
2138                   abort ();
2139                 }
2140
2141               msec = sec;
2142               addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend);
2143               addend -= relocation;
2144               addend += msec->output_section->vma + msec->output_offset;
2145
2146               switch (howto->size)
2147                 {
2148                 case 0:
2149                   /* FIXME: overflow checks.  */
2150                   if (howto->pc_relative)
2151                     addend -= 1;
2152                   bfd_put_8 (input_bfd, addend, where);
2153                   break;
2154                 case 1:
2155                   if (howto->pc_relative)
2156                     addend -= 2;
2157                   bfd_put_16 (input_bfd, addend, where);
2158                   break;
2159                 case 2:
2160                   if (howto->pc_relative)
2161                     addend -= 4;
2162                   bfd_put_32 (input_bfd, addend, where);
2163                   break;
2164                 }
2165             }
2166         }
2167       else
2168         {
2169           bfd_boolean warned;
2170
2171           RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2172                                    r_symndx, symtab_hdr, sym_hashes,
2173                                    h, sec, relocation,
2174                                    unresolved_reloc, warned);
2175         }
2176
2177       switch (r_type)
2178         {
2179         case R_386_GOT32:
2180           /* Relocation is to the entry for this symbol in the global
2181              offset table.  */
2182           if (htab->sgot == NULL)
2183             abort ();
2184
2185           if (h != NULL)
2186             {
2187               bfd_boolean dyn;
2188
2189               off = h->got.offset;
2190               dyn = htab->elf.dynamic_sections_created;
2191               if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2192                   || (info->shared
2193                       && SYMBOL_REFERENCES_LOCAL (info, h))
2194                   || (ELF_ST_VISIBILITY (h->other)
2195                       && h->root.type == bfd_link_hash_undefweak))
2196                 {
2197                   /* This is actually a static link, or it is a
2198                      -Bsymbolic link and the symbol is defined
2199                      locally, or the symbol was forced to be local
2200                      because of a version file.  We must initialize
2201                      this entry in the global offset table.  Since the
2202                      offset must always be a multiple of 4, we use the
2203                      least significant bit to record whether we have
2204                      initialized it already.
2205
2206                      When doing a dynamic link, we create a .rel.got
2207                      relocation entry to initialize the value.  This
2208                      is done in the finish_dynamic_symbol routine.  */
2209                   if ((off & 1) != 0)
2210                     off &= ~1;
2211                   else
2212                     {
2213                       bfd_put_32 (output_bfd, relocation,
2214                                   htab->sgot->contents + off);
2215                       h->got.offset |= 1;
2216                     }
2217                 }
2218               else
2219                 unresolved_reloc = FALSE;
2220             }
2221           else
2222             {
2223               if (local_got_offsets == NULL)
2224                 abort ();
2225
2226               off = local_got_offsets[r_symndx];
2227
2228               /* The offset must always be a multiple of 4.  We use
2229                  the least significant bit to record whether we have
2230                  already generated the necessary reloc.  */
2231               if ((off & 1) != 0)
2232                 off &= ~1;
2233               else
2234                 {
2235                   bfd_put_32 (output_bfd, relocation,
2236                               htab->sgot->contents + off);
2237
2238                   if (info->shared)
2239                     {
2240                       asection *s;
2241                       Elf_Internal_Rela outrel;
2242                       bfd_byte *loc;
2243
2244                       s = htab->srelgot;
2245                       if (s == NULL)
2246                         abort ();
2247
2248                       outrel.r_offset = (htab->sgot->output_section->vma
2249                                          + htab->sgot->output_offset
2250                                          + off);
2251                       outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
2252                       loc = s->contents;
2253                       loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
2254                       bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2255                     }
2256
2257                   local_got_offsets[r_symndx] |= 1;
2258                 }
2259             }
2260
2261           if (off >= (bfd_vma) -2)
2262             abort ();
2263
2264           relocation = htab->sgot->output_section->vma
2265                        + htab->sgot->output_offset + off
2266                        - htab->sgotplt->output_section->vma
2267                        - htab->sgotplt->output_offset;
2268           break;
2269
2270         case R_386_GOTOFF:
2271           /* Relocation is relative to the start of the global offset
2272              table.  */
2273
2274           /* Note that sgot is not involved in this
2275              calculation.  We always want the start of .got.plt.  If we
2276              defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
2277              permitted by the ABI, we might have to change this
2278              calculation.  */
2279           relocation -= htab->sgotplt->output_section->vma
2280                         + htab->sgotplt->output_offset;
2281           break;
2282
2283         case R_386_GOTPC:
2284           /* Use global offset table as symbol value.  */
2285           relocation = htab->sgotplt->output_section->vma
2286                        + htab->sgotplt->output_offset;
2287           unresolved_reloc = FALSE;
2288           break;
2289
2290         case R_386_PLT32:
2291           /* Relocation is to the entry for this symbol in the
2292              procedure linkage table.  */
2293
2294           /* Resolve a PLT32 reloc against a local symbol directly,
2295              without using the procedure linkage table.  */
2296           if (h == NULL)
2297             break;
2298
2299           if (h->plt.offset == (bfd_vma) -1
2300               || htab->splt == NULL)
2301             {
2302               /* We didn't make a PLT entry for this symbol.  This
2303                  happens when statically linking PIC code, or when
2304                  using -Bsymbolic.  */
2305               break;
2306             }
2307
2308           relocation = (htab->splt->output_section->vma
2309                         + htab->splt->output_offset
2310                         + h->plt.offset);
2311           unresolved_reloc = FALSE;
2312           break;
2313
2314         case R_386_32:
2315         case R_386_PC32:
2316           /* r_symndx will be zero only for relocs against symbols
2317              from removed linkonce sections, or sections discarded by
2318              a linker script.  */
2319           if (r_symndx == 0)
2320             {
2321               /* Zero the section contents.  eh_frame generated by old
2322                  versions of gcc isn't edited by elf-eh-frame.c, so
2323                  FDEs for discarded linkonce functions might remain.
2324                  Putting zeros here will zero such FDE's address range.
2325                  This is a hint to unwinders and other consumers of
2326                  exception handling info that the FDE is invalid.  */
2327               bfd_put_32 (input_bfd, 0, contents + rel->r_offset);
2328               break;
2329             }
2330
2331           if ((input_section->flags & SEC_ALLOC) == 0)
2332             break;
2333
2334           if ((info->shared
2335                && (h == NULL
2336                    || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2337                    || h->root.type != bfd_link_hash_undefweak)
2338                && (r_type != R_386_PC32
2339                    || !SYMBOL_CALLS_LOCAL (info, h)))
2340               || (ELIMINATE_COPY_RELOCS
2341                   && !info->shared
2342                   && h != NULL
2343                   && h->dynindx != -1
2344                   && !h->non_got_ref
2345                   && ((h->def_dynamic
2346                        && !h->def_regular)
2347                       || h->root.type == bfd_link_hash_undefweak
2348                       || h->root.type == bfd_link_hash_undefined)))
2349             {
2350               Elf_Internal_Rela outrel;
2351               bfd_byte *loc;
2352               bfd_boolean skip, relocate;
2353               asection *sreloc;
2354
2355               /* When generating a shared object, these relocations
2356                  are copied into the output file to be resolved at run
2357                  time.  */
2358
2359               skip = FALSE;
2360               relocate = FALSE;
2361
2362               outrel.r_offset =
2363                 _bfd_elf_section_offset (output_bfd, info, input_section,
2364                                          rel->r_offset);
2365               if (outrel.r_offset == (bfd_vma) -1)
2366                 skip = TRUE;
2367               else if (outrel.r_offset == (bfd_vma) -2)
2368                 skip = TRUE, relocate = TRUE;
2369               outrel.r_offset += (input_section->output_section->vma
2370                                   + input_section->output_offset);
2371
2372               if (skip)
2373                 memset (&outrel, 0, sizeof outrel);
2374               else if (h != NULL
2375                        && h->dynindx != -1
2376                        && (r_type == R_386_PC32
2377                            || !info->shared
2378                            || !info->symbolic
2379                            || !h->def_regular))
2380                 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2381               else
2382                 {
2383                   /* This symbol is local, or marked to become local.  */
2384                   relocate = TRUE;
2385                   outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
2386                 }
2387
2388               sreloc = elf_section_data (input_section)->sreloc;
2389               if (sreloc == NULL)
2390                 abort ();
2391
2392               loc = sreloc->contents;
2393               loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
2394               bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2395
2396               /* If this reloc is against an external symbol, we do
2397                  not want to fiddle with the addend.  Otherwise, we
2398                  need to include the symbol value so that it becomes
2399                  an addend for the dynamic reloc.  */
2400               if (! relocate)
2401                 continue;
2402             }
2403           break;
2404
2405         case R_386_TLS_IE:
2406           if (info->shared)
2407             {
2408               Elf_Internal_Rela outrel;
2409               bfd_byte *loc;
2410               asection *sreloc;
2411
2412               outrel.r_offset = rel->r_offset
2413                                 + input_section->output_section->vma
2414                                 + input_section->output_offset;
2415               outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
2416               sreloc = elf_section_data (input_section)->sreloc;
2417               if (sreloc == NULL)
2418                 abort ();
2419               loc = sreloc->contents;
2420               loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
2421               bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2422             }
2423           /* Fall through */
2424
2425         case R_386_TLS_GD:
2426         case R_386_TLS_IE_32:
2427         case R_386_TLS_GOTIE:
2428           r_type = elf_i386_tls_transition (info, r_type, h == NULL);
2429           tls_type = GOT_UNKNOWN;
2430           if (h == NULL && local_got_offsets)
2431             tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
2432           else if (h != NULL)
2433             {
2434               tls_type = elf_i386_hash_entry(h)->tls_type;
2435               if (!info->shared && h->dynindx == -1 && (tls_type & GOT_TLS_IE))
2436                 r_type = R_386_TLS_LE_32;
2437             }
2438           if (tls_type == GOT_TLS_IE)
2439             tls_type = GOT_TLS_IE_NEG;
2440           if (r_type == R_386_TLS_GD)
2441             {
2442               if (tls_type == GOT_TLS_IE_POS)
2443                 r_type = R_386_TLS_GOTIE;
2444               else if (tls_type & GOT_TLS_IE)
2445                 r_type = R_386_TLS_IE_32;
2446             }
2447
2448           if (r_type == R_386_TLS_LE_32)
2449             {
2450               BFD_ASSERT (! unresolved_reloc);
2451               if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
2452                 {
2453                   unsigned int val, type;
2454                   bfd_vma roff;
2455
2456                   /* GD->LE transition.  */
2457                   BFD_ASSERT (rel->r_offset >= 2);
2458                   type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2459                   BFD_ASSERT (type == 0x8d || type == 0x04);
2460                   BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
2461                   BFD_ASSERT (bfd_get_8 (input_bfd,
2462                                          contents + rel->r_offset + 4)
2463                               == 0xe8);
2464                   BFD_ASSERT (rel + 1 < relend);
2465                   BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
2466                   roff = rel->r_offset + 5;
2467                   val = bfd_get_8 (input_bfd,
2468                                    contents + rel->r_offset - 1);
2469                   if (type == 0x04)
2470                     {
2471                       /* leal foo(,%reg,1), %eax; call ___tls_get_addr
2472                          Change it into:
2473                          movl %gs:0, %eax; subl $foo@tpoff, %eax
2474                          (6 byte form of subl).  */
2475                       BFD_ASSERT (rel->r_offset >= 3);
2476                       BFD_ASSERT (bfd_get_8 (input_bfd,
2477                                              contents + rel->r_offset - 3)
2478                                   == 0x8d);
2479                       BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
2480                       memcpy (contents + rel->r_offset - 3,
2481                               "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
2482                     }
2483                   else
2484                     {
2485                       BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
2486                       if (rel->r_offset + 10 <= input_section->size
2487                           && bfd_get_8 (input_bfd,
2488                                         contents + rel->r_offset + 9) == 0x90)
2489                         {
2490                           /* leal foo(%reg), %eax; call ___tls_get_addr; nop
2491                              Change it into:
2492                              movl %gs:0, %eax; subl $foo@tpoff, %eax
2493                              (6 byte form of subl).  */
2494                           memcpy (contents + rel->r_offset - 2,
2495                                   "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
2496                           roff = rel->r_offset + 6;
2497                         }
2498                       else
2499                         {
2500                           /* leal foo(%reg), %eax; call ___tls_get_addr
2501                              Change it into:
2502                              movl %gs:0, %eax; subl $foo@tpoff, %eax
2503                              (5 byte form of subl).  */
2504                           memcpy (contents + rel->r_offset - 2,
2505                                   "\x65\xa1\0\0\0\0\x2d\0\0\0", 11);
2506                         }
2507                     }
2508                   bfd_put_32 (output_bfd, tpoff (info, relocation),
2509                               contents + roff);
2510                   /* Skip R_386_PLT32.  */
2511                   rel++;
2512                   continue;
2513                 }
2514               else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
2515                 {
2516                   unsigned int val, type;
2517
2518                   /* IE->LE transition:
2519                      Originally it can be one of:
2520                      movl foo, %eax
2521                      movl foo, %reg
2522                      addl foo, %reg
2523                      We change it into:
2524                      movl $foo, %eax
2525                      movl $foo, %reg
2526                      addl $foo, %reg.  */
2527                   BFD_ASSERT (rel->r_offset >= 1);
2528                   val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
2529                   BFD_ASSERT (rel->r_offset + 4 <= input_section->size);
2530                   if (val == 0xa1)
2531                     {
2532                       /* movl foo, %eax.  */
2533                       bfd_put_8 (output_bfd, 0xb8,
2534                                  contents + rel->r_offset - 1);
2535                     }
2536                   else
2537                     {
2538                       BFD_ASSERT (rel->r_offset >= 2);
2539                       type = bfd_get_8 (input_bfd,
2540                                         contents + rel->r_offset - 2);
2541                       switch (type)
2542                         {
2543                         case 0x8b:
2544                           /* movl */
2545                           BFD_ASSERT ((val & 0xc7) == 0x05);
2546                           bfd_put_8 (output_bfd, 0xc7,
2547                                      contents + rel->r_offset - 2);
2548                           bfd_put_8 (output_bfd,
2549                                      0xc0 | ((val >> 3) & 7),
2550                                      contents + rel->r_offset - 1);
2551                           break;
2552                         case 0x03:
2553                           /* addl */
2554                           BFD_ASSERT ((val & 0xc7) == 0x05);
2555                           bfd_put_8 (output_bfd, 0x81,
2556                                      contents + rel->r_offset - 2);
2557                           bfd_put_8 (output_bfd,
2558                                      0xc0 | ((val >> 3) & 7),
2559                                      contents + rel->r_offset - 1);
2560                           break;
2561                         default:
2562                           BFD_FAIL ();
2563                           break;
2564                         }
2565                     }
2566                   bfd_put_32 (output_bfd, -tpoff (info, relocation),
2567                               contents + rel->r_offset);
2568                   continue;
2569                 }
2570               else
2571                 {
2572                   unsigned int val, type;
2573
2574                   /* {IE_32,GOTIE}->LE transition:
2575                      Originally it can be one of:
2576                      subl foo(%reg1), %reg2
2577                      movl foo(%reg1), %reg2
2578                      addl foo(%reg1), %reg2
2579                      We change it into:
2580                      subl $foo, %reg2
2581                      movl $foo, %reg2 (6 byte form)
2582                      addl $foo, %reg2.  */
2583                   BFD_ASSERT (rel->r_offset >= 2);
2584                   type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2585                   val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
2586                   BFD_ASSERT (rel->r_offset + 4 <= input_section->size);
2587                   BFD_ASSERT ((val & 0xc0) == 0x80 && (val & 7) != 4);
2588                   if (type == 0x8b)
2589                     {
2590                       /* movl */
2591                       bfd_put_8 (output_bfd, 0xc7,
2592                                  contents + rel->r_offset - 2);
2593                       bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2594                                  contents + rel->r_offset - 1);
2595                     }
2596                   else if (type == 0x2b)
2597                     {
2598                       /* subl */
2599                       bfd_put_8 (output_bfd, 0x81,
2600                                  contents + rel->r_offset - 2);
2601                       bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
2602                                  contents + rel->r_offset - 1);
2603                     }
2604                   else if (type == 0x03)
2605                     {
2606                       /* addl */
2607                       bfd_put_8 (output_bfd, 0x81,
2608                                  contents + rel->r_offset - 2);
2609                       bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
2610                                  contents + rel->r_offset - 1);
2611                     }
2612                   else
2613                     BFD_FAIL ();
2614                   if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
2615                     bfd_put_32 (output_bfd, -tpoff (info, relocation),
2616                                 contents + rel->r_offset);
2617                   else
2618                     bfd_put_32 (output_bfd, tpoff (info, relocation),
2619                                 contents + rel->r_offset);
2620                   continue;
2621                 }
2622             }
2623
2624           if (htab->sgot == NULL)
2625             abort ();
2626
2627           if (h != NULL)
2628             off = h->got.offset;
2629           else
2630             {
2631               if (local_got_offsets == NULL)
2632                 abort ();
2633
2634               off = local_got_offsets[r_symndx];
2635             }
2636
2637           if ((off & 1) != 0)
2638             off &= ~1;
2639           else
2640             {
2641               Elf_Internal_Rela outrel;
2642               bfd_byte *loc;
2643               int dr_type, indx;
2644
2645               if (htab->srelgot == NULL)
2646                 abort ();
2647
2648               outrel.r_offset = (htab->sgot->output_section->vma
2649                                  + htab->sgot->output_offset + off);
2650
2651               indx = h && h->dynindx != -1 ? h->dynindx : 0;
2652               if (r_type == R_386_TLS_GD)
2653                 dr_type = R_386_TLS_DTPMOD32;
2654               else if (tls_type == GOT_TLS_IE_POS)
2655                 dr_type = R_386_TLS_TPOFF;
2656               else
2657                 dr_type = R_386_TLS_TPOFF32;
2658               if (dr_type == R_386_TLS_TPOFF && indx == 0)
2659                 bfd_put_32 (output_bfd, relocation - dtpoff_base (info),
2660                             htab->sgot->contents + off);
2661               else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
2662                 bfd_put_32 (output_bfd, dtpoff_base (info) - relocation,
2663                             htab->sgot->contents + off);
2664               else
2665                 bfd_put_32 (output_bfd, 0,
2666                             htab->sgot->contents + off);
2667               outrel.r_info = ELF32_R_INFO (indx, dr_type);
2668               loc = htab->srelgot->contents;
2669               loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
2670               bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2671
2672               if (r_type == R_386_TLS_GD)
2673                 {
2674                   if (indx == 0)
2675                     {
2676                       BFD_ASSERT (! unresolved_reloc);
2677                       bfd_put_32 (output_bfd,
2678                                   relocation - dtpoff_base (info),
2679                                   htab->sgot->contents + off + 4);
2680                     }
2681                   else
2682                     {
2683                       bfd_put_32 (output_bfd, 0,
2684                                   htab->sgot->contents + off + 4);
2685                       outrel.r_info = ELF32_R_INFO (indx,
2686                                                     R_386_TLS_DTPOFF32);
2687                       outrel.r_offset += 4;
2688                       htab->srelgot->reloc_count++;
2689                       loc += sizeof (Elf32_External_Rel);
2690                       bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2691                     }
2692                 }
2693               else if (tls_type == GOT_TLS_IE_BOTH)
2694                 {
2695                   bfd_put_32 (output_bfd,
2696                               indx == 0 ? relocation - dtpoff_base (info) : 0,
2697                               htab->sgot->contents + off + 4);
2698                   outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
2699                   outrel.r_offset += 4;
2700                   htab->srelgot->reloc_count++;
2701                   loc += sizeof (Elf32_External_Rel);
2702                   bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2703                 }
2704
2705               if (h != NULL)
2706                 h->got.offset |= 1;
2707               else
2708                 local_got_offsets[r_symndx] |= 1;
2709             }
2710
2711           if (off >= (bfd_vma) -2)
2712             abort ();
2713           if (r_type == ELF32_R_TYPE (rel->r_info))
2714             {
2715               bfd_vma g_o_t = htab->sgotplt->output_section->vma
2716                               + htab->sgotplt->output_offset;
2717               relocation = htab->sgot->output_section->vma
2718                            + htab->sgot->output_offset + off - g_o_t;
2719               if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
2720                   && tls_type == GOT_TLS_IE_BOTH)
2721                 relocation += 4;
2722               if (r_type == R_386_TLS_IE)
2723                 relocation += g_o_t;
2724               unresolved_reloc = FALSE;
2725             }
2726           else
2727             {
2728               unsigned int val, type;
2729               bfd_vma roff;
2730
2731               /* GD->IE transition.  */
2732               BFD_ASSERT (rel->r_offset >= 2);
2733               type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
2734               BFD_ASSERT (type == 0x8d || type == 0x04);
2735               BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
2736               BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
2737                           == 0xe8);
2738               BFD_ASSERT (rel + 1 < relend);
2739               BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
2740               roff = rel->r_offset - 3;
2741               val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
2742               if (type == 0x04)
2743                 {
2744                   /* leal foo(,%reg,1), %eax; call ___tls_get_addr
2745                      Change it into:
2746                      movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax.  */
2747                   BFD_ASSERT (rel->r_offset >= 3);
2748                   BFD_ASSERT (bfd_get_8 (input_bfd,
2749                                          contents + rel->r_offset - 3)
2750                               == 0x8d);
2751                   BFD_ASSERT ((val & 0xc7) == 0x05 && val != (4 << 3));
2752                   val >>= 3;
2753                 }
2754               else
2755                 {
2756                   /* leal foo(%reg), %eax; call ___tls_get_addr; nop
2757                      Change it into:
2758                      movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax.  */
2759                   BFD_ASSERT (rel->r_offset + 10 <= input_section->size);
2760                   BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
2761                   BFD_ASSERT (bfd_get_8 (input_bfd,
2762                                          contents + rel->r_offset + 9)
2763                               == 0x90);
2764                   roff = rel->r_offset - 2;
2765                 }
2766               memcpy (contents + roff,
2767                       "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
2768               contents[roff + 7] = 0x80 | (val & 7);
2769               /* If foo is used only with foo@gotntpoff(%reg) and
2770                  foo@indntpoff, but not with foo@gottpoff(%reg), change
2771                  subl $foo@gottpoff(%reg), %eax
2772                  into:
2773                  addl $foo@gotntpoff(%reg), %eax.  */
2774               if (r_type == R_386_TLS_GOTIE)
2775                 {
2776                   contents[roff + 6] = 0x03;
2777                   if (tls_type == GOT_TLS_IE_BOTH)
2778                     off += 4;
2779                 }
2780               bfd_put_32 (output_bfd,
2781                           htab->sgot->output_section->vma
2782                           + htab->sgot->output_offset + off
2783                           - htab->sgotplt->output_section->vma
2784                           - htab->sgotplt->output_offset,
2785                           contents + roff + 8);
2786               /* Skip R_386_PLT32.  */
2787               rel++;
2788               continue;
2789             }
2790           break;
2791
2792         case R_386_TLS_LDM:
2793           if (! info->shared)
2794             {
2795               unsigned int val;
2796
2797               /* LD->LE transition:
2798                  Ensure it is:
2799                  leal foo(%reg), %eax; call ___tls_get_addr.
2800                  We change it into:
2801                  movl %gs:0, %eax; nop; leal 0(%esi,1), %esi.  */
2802               BFD_ASSERT (rel->r_offset >= 2);
2803               BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset - 2)
2804                           == 0x8d);
2805               val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
2806               BFD_ASSERT ((val & 0xf8) == 0x80 && (val & 7) != 4);
2807               BFD_ASSERT (rel->r_offset + 9 <= input_section->size);
2808               BFD_ASSERT (bfd_get_8 (input_bfd, contents + rel->r_offset + 4)
2809                           == 0xe8);
2810               BFD_ASSERT (rel + 1 < relend);
2811               BFD_ASSERT (ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32);
2812               memcpy (contents + rel->r_offset - 2,
2813                       "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
2814               /* Skip R_386_PLT32.  */
2815               rel++;
2816               continue;
2817             }
2818
2819           if (htab->sgot == NULL)
2820             abort ();
2821
2822           off = htab->tls_ldm_got.offset;
2823           if (off & 1)
2824             off &= ~1;
2825           else
2826             {
2827               Elf_Internal_Rela outrel;
2828               bfd_byte *loc;
2829
2830               if (htab->srelgot == NULL)
2831                 abort ();
2832
2833               outrel.r_offset = (htab->sgot->output_section->vma
2834                                  + htab->sgot->output_offset + off);
2835
2836               bfd_put_32 (output_bfd, 0,
2837                           htab->sgot->contents + off);
2838               bfd_put_32 (output_bfd, 0,
2839                           htab->sgot->contents + off + 4);
2840               outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
2841               loc = htab->srelgot->contents;
2842               loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
2843               bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2844               htab->tls_ldm_got.offset |= 1;
2845             }
2846           relocation = htab->sgot->output_section->vma
2847                        + htab->sgot->output_offset + off
2848                        - htab->sgotplt->output_section->vma
2849                        - htab->sgotplt->output_offset;
2850           unresolved_reloc = FALSE;
2851           break;
2852
2853         case R_386_TLS_LDO_32:
2854           if (info->shared || (input_section->flags & SEC_CODE) == 0)
2855             relocation -= dtpoff_base (info);
2856           else
2857             /* When converting LDO to LE, we must negate.  */
2858             relocation = -tpoff (info, relocation);
2859           break;
2860
2861         case R_386_TLS_LE_32:
2862         case R_386_TLS_LE:
2863           if (info->shared)
2864             {
2865               Elf_Internal_Rela outrel;
2866               asection *sreloc;
2867               bfd_byte *loc;
2868               int indx;
2869
2870               outrel.r_offset = rel->r_offset
2871                                 + input_section->output_section->vma
2872                                 + input_section->output_offset;
2873               if (h != NULL && h->dynindx != -1)
2874                 indx = h->dynindx;
2875               else
2876                 indx = 0;
2877               if (r_type == R_386_TLS_LE_32)
2878                 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
2879               else
2880                 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
2881               sreloc = elf_section_data (input_section)->sreloc;
2882               if (sreloc == NULL)
2883                 abort ();
2884               loc = sreloc->contents;
2885               loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
2886               bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
2887               if (indx)
2888                 continue;
2889               else if (r_type == R_386_TLS_LE_32)
2890                 relocation = dtpoff_base (info) - relocation;
2891               else
2892                 relocation -= dtpoff_base (info);
2893             }
2894           else if (r_type == R_386_TLS_LE_32)
2895             relocation = tpoff (info, relocation);
2896           else
2897             relocation = -tpoff (info, relocation);
2898           break;
2899
2900         default:
2901           break;
2902         }
2903
2904       /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
2905          because such sections are not SEC_ALLOC and thus ld.so will
2906          not process them.  */
2907       if (unresolved_reloc
2908           && !((input_section->flags & SEC_DEBUGGING) != 0
2909                && h->def_dynamic))
2910         {
2911           (*_bfd_error_handler)
2912             (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"),
2913              input_bfd,
2914              input_section,
2915              (long) rel->r_offset,
2916              h->root.root.string);
2917           return FALSE;
2918         }
2919
2920       r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2921                                     contents, rel->r_offset,
2922                                     relocation, 0);
2923
2924       if (r != bfd_reloc_ok)
2925         {
2926           const char *name;
2927
2928           if (h != NULL)
2929             name = h->root.root.string;
2930           else
2931             {
2932               name = bfd_elf_string_from_elf_section (input_bfd,
2933                                                       symtab_hdr->sh_link,
2934                                                       sym->st_name);
2935               if (name == NULL)
2936                 return FALSE;
2937               if (*name == '\0')
2938                 name = bfd_section_name (input_bfd, sec);
2939             }
2940
2941           if (r == bfd_reloc_overflow)
2942             {
2943               if (! ((*info->callbacks->reloc_overflow)
2944                      (info, (h ? &h->root : NULL), name, howto->name,
2945                       (bfd_vma) 0, input_bfd, input_section,
2946                       rel->r_offset)))
2947                 return FALSE;
2948             }
2949           else
2950             {
2951               (*_bfd_error_handler)
2952                 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
2953                  input_bfd, input_section,
2954                  (long) rel->r_offset, name, (int) r);
2955               return FALSE;
2956             }
2957         }
2958     }
2959
2960   return TRUE;
2961 }
2962
2963 /* Finish up dynamic symbol handling.  We set the contents of various
2964    dynamic sections here.  */
2965
2966 static bfd_boolean
2967 elf_i386_finish_dynamic_symbol (bfd *output_bfd,
2968                                 struct bfd_link_info *info,
2969                                 struct elf_link_hash_entry *h,
2970                                 Elf_Internal_Sym *sym)
2971 {
2972   struct elf_i386_link_hash_table *htab;
2973
2974   htab = elf_i386_hash_table (info);
2975
2976   if (h->plt.offset != (bfd_vma) -1)
2977     {
2978       bfd_vma plt_index;
2979       bfd_vma got_offset;
2980       Elf_Internal_Rela rel;
2981       bfd_byte *loc;
2982
2983       /* This symbol has an entry in the procedure linkage table.  Set
2984          it up.  */
2985
2986       if (h->dynindx == -1
2987           || htab->splt == NULL
2988           || htab->sgotplt == NULL
2989           || htab->srelplt == NULL)
2990         abort ();
2991
2992       /* Get the index in the procedure linkage table which
2993          corresponds to this symbol.  This is the index of this symbol
2994          in all the symbols for which we are making plt entries.  The
2995          first entry in the procedure linkage table is reserved.  */
2996       plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
2997
2998       /* Get the offset into the .got table of the entry that
2999          corresponds to this function.  Each .got entry is 4 bytes.
3000          The first three are reserved.  */
3001       got_offset = (plt_index + 3) * 4;
3002
3003       /* Fill in the entry in the procedure linkage table.  */
3004       if (! info->shared)
3005         {
3006           memcpy (htab->splt->contents + h->plt.offset, elf_i386_plt_entry,
3007                   PLT_ENTRY_SIZE);
3008           bfd_put_32 (output_bfd,
3009                       (htab->sgotplt->output_section->vma
3010                        + htab->sgotplt->output_offset
3011                        + got_offset),
3012                       htab->splt->contents + h->plt.offset + 2);
3013         }
3014       else
3015         {
3016           memcpy (htab->splt->contents + h->plt.offset, elf_i386_pic_plt_entry,
3017                   PLT_ENTRY_SIZE);
3018           bfd_put_32 (output_bfd, got_offset,
3019                       htab->splt->contents + h->plt.offset + 2);
3020         }
3021
3022       bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
3023                   htab->splt->contents + h->plt.offset + 7);
3024       bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE),
3025                   htab->splt->contents + h->plt.offset + 12);
3026
3027       /* Fill in the entry in the global offset table.  */
3028       bfd_put_32 (output_bfd,
3029                   (htab->splt->output_section->vma
3030                    + htab->splt->output_offset
3031                    + h->plt.offset
3032                    + 6),
3033                   htab->sgotplt->contents + got_offset);
3034
3035       /* Fill in the entry in the .rel.plt section.  */
3036       rel.r_offset = (htab->sgotplt->output_section->vma
3037                       + htab->sgotplt->output_offset
3038                       + got_offset);
3039       rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
3040       loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rel);
3041       bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
3042
3043       if (!h->def_regular)
3044         {
3045           /* Mark the symbol as undefined, rather than as defined in
3046              the .plt section.  Leave the value if there were any
3047              relocations where pointer equality matters (this is a clue
3048              for the dynamic linker, to make function pointer
3049              comparisons work between an application and shared
3050              library), otherwise set it to zero.  If a function is only
3051              called from a binary, there is no need to slow down
3052              shared libraries because of that.  */
3053           sym->st_shndx = SHN_UNDEF;
3054           if (!h->pointer_equality_needed)
3055             sym->st_value = 0;
3056         }
3057     }
3058
3059   if (h->got.offset != (bfd_vma) -1
3060       && elf_i386_hash_entry(h)->tls_type != GOT_TLS_GD
3061       && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
3062     {
3063       Elf_Internal_Rela rel;
3064       bfd_byte *loc;
3065
3066       /* This symbol has an entry in the global offset table.  Set it
3067          up.  */
3068
3069       if (htab->sgot == NULL || htab->srelgot == NULL)
3070         abort ();
3071
3072       rel.r_offset = (htab->sgot->output_section->vma
3073                       + htab->sgot->output_offset
3074                       + (h->got.offset & ~(bfd_vma) 1));
3075
3076       /* If this is a static link, or it is a -Bsymbolic link and the
3077          symbol is defined locally or was forced to be local because
3078          of a version file, we just want to emit a RELATIVE reloc.
3079          The entry in the global offset table will already have been
3080          initialized in the relocate_section function.  */
3081       if (info->shared
3082           && SYMBOL_REFERENCES_LOCAL (info, h))
3083         {
3084           BFD_ASSERT((h->got.offset & 1) != 0);
3085           rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3086         }
3087       else
3088         {
3089           BFD_ASSERT((h->got.offset & 1) == 0);
3090           bfd_put_32 (output_bfd, (bfd_vma) 0,
3091                       htab->sgot->contents + h->got.offset);
3092           rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
3093         }
3094
3095       loc = htab->srelgot->contents;
3096       loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
3097       bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
3098     }
3099
3100   if (h->needs_copy)
3101     {
3102       Elf_Internal_Rela rel;
3103       bfd_byte *loc;
3104
3105       /* This symbol needs a copy reloc.  Set it up.  */
3106
3107       if (h->dynindx == -1
3108           || (h->root.type != bfd_link_hash_defined
3109               && h->root.type != bfd_link_hash_defweak)
3110           || htab->srelbss == NULL)
3111         abort ();
3112
3113       rel.r_offset = (h->root.u.def.value
3114                       + h->root.u.def.section->output_section->vma
3115                       + h->root.u.def.section->output_offset);
3116       rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
3117       loc = htab->srelbss->contents;
3118       loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
3119       bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
3120     }
3121
3122   /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute.  */
3123   if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3124       || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3125     sym->st_shndx = SHN_ABS;
3126
3127   return TRUE;
3128 }
3129
3130 /* Used to decide how to sort relocs in an optimal manner for the
3131    dynamic linker, before writing them out.  */
3132
3133 static enum elf_reloc_type_class
3134 elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
3135 {
3136   switch (ELF32_R_TYPE (rela->r_info))
3137     {
3138     case R_386_RELATIVE:
3139       return reloc_class_relative;
3140     case R_386_JUMP_SLOT:
3141       return reloc_class_plt;
3142     case R_386_COPY:
3143       return reloc_class_copy;
3144     default:
3145       return reloc_class_normal;
3146     }
3147 }
3148
3149 /* Finish up the dynamic sections.  */
3150
3151 static bfd_boolean
3152 elf_i386_finish_dynamic_sections (bfd *output_bfd,
3153                                   struct bfd_link_info *info)
3154 {
3155   struct elf_i386_link_hash_table *htab;
3156   bfd *dynobj;
3157   asection *sdyn;
3158
3159   htab = elf_i386_hash_table (info);
3160   dynobj = htab->elf.dynobj;
3161   sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3162
3163   if (htab->elf.dynamic_sections_created)
3164     {
3165       Elf32_External_Dyn *dyncon, *dynconend;
3166
3167       if (sdyn == NULL || htab->sgot == NULL)
3168         abort ();
3169
3170       dyncon = (Elf32_External_Dyn *) sdyn->contents;
3171       dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3172       for (; dyncon < dynconend; dyncon++)
3173         {
3174           Elf_Internal_Dyn dyn;
3175           asection *s;
3176
3177           bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3178
3179           switch (dyn.d_tag)
3180             {
3181             default:
3182               continue;
3183
3184             case DT_PLTGOT:
3185               s = htab->sgotplt;
3186               dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3187               break;
3188
3189             case DT_JMPREL:
3190               s = htab->srelplt;
3191               dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
3192               break;
3193
3194             case DT_PLTRELSZ:
3195               s = htab->srelplt;
3196               dyn.d_un.d_val = s->size;
3197               break;
3198
3199             case DT_RELSZ:
3200               /* My reading of the SVR4 ABI indicates that the
3201                  procedure linkage table relocs (DT_JMPREL) should be
3202                  included in the overall relocs (DT_REL).  This is
3203                  what Solaris does.  However, UnixWare can not handle
3204                  that case.  Therefore, we override the DT_RELSZ entry
3205                  here to make it not include the JMPREL relocs.  */
3206               s = htab->srelplt;
3207               if (s == NULL)
3208                 continue;
3209               dyn.d_un.d_val -= s->size;
3210               break;
3211
3212             case DT_REL:
3213               /* We may not be using the standard ELF linker script.
3214                  If .rel.plt is the first .rel section, we adjust
3215                  DT_REL to not include it.  */
3216               s = htab->srelplt;
3217               if (s == NULL)
3218                 continue;
3219               if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
3220                 continue;
3221               dyn.d_un.d_ptr += s->size;
3222               break;
3223             }
3224
3225           bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3226         }
3227
3228       /* Fill in the first entry in the procedure linkage table.  */
3229       if (htab->splt && htab->splt->size > 0)
3230         {
3231           if (info->shared)
3232             memcpy (htab->splt->contents,
3233                     elf_i386_pic_plt0_entry, PLT_ENTRY_SIZE);
3234           else
3235             {
3236               memcpy (htab->splt->contents,
3237                       elf_i386_plt0_entry, PLT_ENTRY_SIZE);
3238               bfd_put_32 (output_bfd,
3239                           (htab->sgotplt->output_section->vma
3240                            + htab->sgotplt->output_offset
3241                            + 4),
3242                           htab->splt->contents + 2);
3243               bfd_put_32 (output_bfd,
3244                           (htab->sgotplt->output_section->vma
3245                            + htab->sgotplt->output_offset
3246                            + 8),
3247                           htab->splt->contents + 8);
3248             }
3249
3250           /* UnixWare sets the entsize of .plt to 4, although that doesn't
3251              really seem like the right value.  */
3252           elf_section_data (htab->splt->output_section)
3253             ->this_hdr.sh_entsize = 4;
3254         }
3255     }
3256
3257   if (htab->sgotplt)
3258     {
3259       /* Fill in the first three entries in the global offset table.  */
3260       if (htab->sgotplt->size > 0)
3261         {
3262           bfd_put_32 (output_bfd,
3263                       (sdyn == NULL ? 0
3264                        : sdyn->output_section->vma + sdyn->output_offset),
3265                       htab->sgotplt->contents);
3266           bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 4);
3267           bfd_put_32 (output_bfd, 0, htab->sgotplt->contents + 8);
3268         }
3269
3270       elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = 4;
3271     }
3272
3273   if (htab->sgot && htab->sgot->size > 0)
3274     elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 4;
3275
3276   return TRUE;
3277 }
3278
3279 /* Return address for Ith PLT stub in section PLT, for relocation REL
3280    or (bfd_vma) -1 if it should not be included.  */
3281
3282 static bfd_vma
3283 elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
3284                       const arelent *rel ATTRIBUTE_UNUSED)
3285 {
3286   return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
3287 }
3288
3289
3290 #define TARGET_LITTLE_SYM               bfd_elf32_i386_vec
3291 #define TARGET_LITTLE_NAME              "elf32-i386"
3292 #define ELF_ARCH                        bfd_arch_i386
3293 #define ELF_MACHINE_CODE                EM_386
3294 #define ELF_MAXPAGESIZE                 0x1000
3295
3296 #define elf_backend_can_gc_sections     1
3297 #define elf_backend_can_refcount        1
3298 #define elf_backend_want_got_plt        1
3299 #define elf_backend_plt_readonly        1
3300 #define elf_backend_want_plt_sym        0
3301 #define elf_backend_got_header_size     12
3302
3303 /* Support RELA for objdump of prelink objects.  */
3304 #define elf_info_to_howto                     elf_i386_info_to_howto_rel
3305 #define elf_info_to_howto_rel                 elf_i386_info_to_howto_rel
3306
3307 #define bfd_elf32_mkobject                    elf_i386_mkobject
3308
3309 #define bfd_elf32_bfd_is_local_label_name     elf_i386_is_local_label_name
3310 #define bfd_elf32_bfd_link_hash_table_create  elf_i386_link_hash_table_create
3311 #define bfd_elf32_bfd_reloc_type_lookup       elf_i386_reloc_type_lookup
3312
3313 #define elf_backend_adjust_dynamic_symbol     elf_i386_adjust_dynamic_symbol
3314 #define elf_backend_check_relocs              elf_i386_check_relocs
3315 #define elf_backend_copy_indirect_symbol      elf_i386_copy_indirect_symbol
3316 #define elf_backend_create_dynamic_sections   elf_i386_create_dynamic_sections
3317 #define elf_backend_fake_sections             elf_i386_fake_sections
3318 #define elf_backend_finish_dynamic_sections   elf_i386_finish_dynamic_sections
3319 #define elf_backend_finish_dynamic_symbol     elf_i386_finish_dynamic_symbol
3320 #define elf_backend_gc_mark_hook              elf_i386_gc_mark_hook
3321 #define elf_backend_gc_sweep_hook             elf_i386_gc_sweep_hook
3322 #define elf_backend_grok_prstatus             elf_i386_grok_prstatus
3323 #define elf_backend_grok_psinfo               elf_i386_grok_psinfo
3324 #define elf_backend_reloc_type_class          elf_i386_reloc_type_class
3325 #define elf_backend_relocate_section          elf_i386_relocate_section
3326 #define elf_backend_size_dynamic_sections     elf_i386_size_dynamic_sections
3327 #define elf_backend_plt_sym_val               elf_i386_plt_sym_val
3328
3329 #include "elf32-target.h"
3330
3331 /* FreeBSD support.  */
3332
3333 #undef  TARGET_LITTLE_SYM
3334 #define TARGET_LITTLE_SYM               bfd_elf32_i386_freebsd_vec
3335 #undef  TARGET_LITTLE_NAME
3336 #define TARGET_LITTLE_NAME              "elf32-i386-freebsd"
3337
3338 /* The kernel recognizes executables as valid only if they carry a
3339    "FreeBSD" label in the ELF header.  So we put this label on all
3340    executables and (for simplicity) also all other object files.  */
3341
3342 static void
3343 elf_i386_post_process_headers (bfd *abfd,
3344                                struct bfd_link_info *info ATTRIBUTE_UNUSED)
3345 {
3346   Elf_Internal_Ehdr *i_ehdrp;
3347
3348   i_ehdrp = elf_elfheader (abfd);
3349
3350   /* Put an ABI label supported by FreeBSD >= 4.1.  */
3351   i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_FREEBSD;
3352 #ifdef OLD_FREEBSD_ABI_LABEL
3353   /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard.  */
3354   memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
3355 #endif
3356 }
3357
3358 #undef  elf_backend_post_process_headers
3359 #define elf_backend_post_process_headers        elf_i386_post_process_headers
3360 #undef  elf32_bed
3361 #define elf32_bed                               elf32_i386_fbsd_bed
3362
3363 #include "elf32-target.h"