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, 2005, 2006, 2007, 2008, 2009, 2010 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #include "sysdep.h"
  23 #include "bfd.h"
  24 #include "bfdlink.h"
  25 #include "libbfd.h"
  26 #include "elf-bfd.h"
  27 #include "elf-vxworks.h"
  28 #include "bfd_stdint.h"
  29 #include "objalloc.h"
  30 #include "hashtab.h"
  31
  32 /* 386 uses REL relocations instead of RELA.  */
  33 #define USE_REL 1
  34
  35 #include "elf/i386.h"
  36
  37 static reloc_howto_type elf_howto_table[]=
  38 {
  39   HOWTO(R_386_NONE, 0, 0, 0, FALSE, 0, complain_overflow_bitfield,
  40         bfd_elf_generic_reloc, "R_386_NONE",
  41         TRUE, 0x00000000, 0x00000000, FALSE),
  42   HOWTO(R_386_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  43         bfd_elf_generic_reloc, "R_386_32",
  44         TRUE, 0xffffffff, 0xffffffff, FALSE),
  45   HOWTO(R_386_PC32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
  46         bfd_elf_generic_reloc, "R_386_PC32",
  47         TRUE, 0xffffffff, 0xffffffff, TRUE),
  48   HOWTO(R_386_GOT32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  49         bfd_elf_generic_reloc, "R_386_GOT32",
  50         TRUE, 0xffffffff, 0xffffffff, FALSE),
  51   HOWTO(R_386_PLT32, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
  52         bfd_elf_generic_reloc, "R_386_PLT32",
  53         TRUE, 0xffffffff, 0xffffffff, TRUE),
  54   HOWTO(R_386_COPY, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  55         bfd_elf_generic_reloc, "R_386_COPY",
  56         TRUE, 0xffffffff, 0xffffffff, FALSE),
  57   HOWTO(R_386_GLOB_DAT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  58         bfd_elf_generic_reloc, "R_386_GLOB_DAT",
  59         TRUE, 0xffffffff, 0xffffffff, FALSE),
  60   HOWTO(R_386_JUMP_SLOT, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  61         bfd_elf_generic_reloc, "R_386_JUMP_SLOT",
  62         TRUE, 0xffffffff, 0xffffffff, FALSE),
  63   HOWTO(R_386_RELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  64         bfd_elf_generic_reloc, "R_386_RELATIVE",
  65         TRUE, 0xffffffff, 0xffffffff, FALSE),
  66   HOWTO(R_386_GOTOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  67         bfd_elf_generic_reloc, "R_386_GOTOFF",
  68         TRUE, 0xffffffff, 0xffffffff, FALSE),
  69   HOWTO(R_386_GOTPC, 0, 2, 32, TRUE, 0, complain_overflow_bitfield,
  70         bfd_elf_generic_reloc, "R_386_GOTPC",
  71         TRUE, 0xffffffff, 0xffffffff, TRUE),
  72
  73   /* We have a gap in the reloc numbers here.
  74      R_386_standard counts the number up to this point, and
  75      R_386_ext_offset is the value to subtract from a reloc type of
  76      R_386_16 thru R_386_PC8 to form an index into this table.  */
  77 #define R_386_standard (R_386_GOTPC + 1)
  78 #define R_386_ext_offset (R_386_TLS_TPOFF - R_386_standard)
  79
  80   /* These relocs are a GNU extension.  */
  81   HOWTO(R_386_TLS_TPOFF, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  82         bfd_elf_generic_reloc, "R_386_TLS_TPOFF",
  83         TRUE, 0xffffffff, 0xffffffff, FALSE),
  84   HOWTO(R_386_TLS_IE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  85         bfd_elf_generic_reloc, "R_386_TLS_IE",
  86         TRUE, 0xffffffff, 0xffffffff, FALSE),
  87   HOWTO(R_386_TLS_GOTIE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  88         bfd_elf_generic_reloc, "R_386_TLS_GOTIE",
  89         TRUE, 0xffffffff, 0xffffffff, FALSE),
  90   HOWTO(R_386_TLS_LE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  91         bfd_elf_generic_reloc, "R_386_TLS_LE",
  92         TRUE, 0xffffffff, 0xffffffff, FALSE),
  93   HOWTO(R_386_TLS_GD, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  94         bfd_elf_generic_reloc, "R_386_TLS_GD",
  95         TRUE, 0xffffffff, 0xffffffff, FALSE),
  96   HOWTO(R_386_TLS_LDM, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
  97         bfd_elf_generic_reloc, "R_386_TLS_LDM",
  98         TRUE, 0xffffffff, 0xffffffff, FALSE),
  99   HOWTO(R_386_16, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,
 100         bfd_elf_generic_reloc, "R_386_16",
 101         TRUE, 0xffff, 0xffff, FALSE),
 102   HOWTO(R_386_PC16, 0, 1, 16, TRUE, 0, complain_overflow_bitfield,
 103         bfd_elf_generic_reloc, "R_386_PC16",
 104         TRUE, 0xffff, 0xffff, TRUE),
 105   HOWTO(R_386_8, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,
 106         bfd_elf_generic_reloc, "R_386_8",
 107         TRUE, 0xff, 0xff, FALSE),
 108   HOWTO(R_386_PC8, 0, 0, 8, TRUE, 0, complain_overflow_signed,
 109         bfd_elf_generic_reloc, "R_386_PC8",
 110         TRUE, 0xff, 0xff, TRUE),
 111
 112 #define R_386_ext (R_386_PC8 + 1 - R_386_ext_offset)
 113 #define R_386_tls_offset (R_386_TLS_LDO_32 - R_386_ext)
 114   /* These are common with Solaris TLS implementation.  */
 115   HOWTO(R_386_TLS_LDO_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 116         bfd_elf_generic_reloc, "R_386_TLS_LDO_32",
 117         TRUE, 0xffffffff, 0xffffffff, FALSE),
 118   HOWTO(R_386_TLS_IE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 119         bfd_elf_generic_reloc, "R_386_TLS_IE_32",
 120         TRUE, 0xffffffff, 0xffffffff, FALSE),
 121   HOWTO(R_386_TLS_LE_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 122         bfd_elf_generic_reloc, "R_386_TLS_LE_32",
 123         TRUE, 0xffffffff, 0xffffffff, FALSE),
 124   HOWTO(R_386_TLS_DTPMOD32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 125         bfd_elf_generic_reloc, "R_386_TLS_DTPMOD32",
 126         TRUE, 0xffffffff, 0xffffffff, FALSE),
 127   HOWTO(R_386_TLS_DTPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 128         bfd_elf_generic_reloc, "R_386_TLS_DTPOFF32",
 129         TRUE, 0xffffffff, 0xffffffff, FALSE),
 130   HOWTO(R_386_TLS_TPOFF32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 131         bfd_elf_generic_reloc, "R_386_TLS_TPOFF32",
 132         TRUE, 0xffffffff, 0xffffffff, FALSE),
 133   EMPTY_HOWTO (38),
 134   HOWTO(R_386_TLS_GOTDESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 135         bfd_elf_generic_reloc, "R_386_TLS_GOTDESC",
 136         TRUE, 0xffffffff, 0xffffffff, FALSE),
 137   HOWTO(R_386_TLS_DESC_CALL, 0, 0, 0, FALSE, 0, complain_overflow_dont,
 138         bfd_elf_generic_reloc, "R_386_TLS_DESC_CALL",
 139         FALSE, 0, 0, FALSE),
 140   HOWTO(R_386_TLS_DESC, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 141         bfd_elf_generic_reloc, "R_386_TLS_DESC",
 142         TRUE, 0xffffffff, 0xffffffff, FALSE),
 143   HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
 144         bfd_elf_generic_reloc, "R_386_IRELATIVE",
 145         TRUE, 0xffffffff, 0xffffffff, FALSE),
 146
 147   /* Another gap.  */
 148 #define R_386_irelative (R_386_IRELATIVE + 1 - R_386_tls_offset)
 149 #define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_irelative)
 150
 151 /* GNU extension to record C++ vtable hierarchy.  */
 152   HOWTO (R_386_GNU_VTINHERIT,   /* type */
 153          0,                     /* rightshift */
 154          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 155          0,                     /* bitsize */
 156          FALSE,                 /* pc_relative */
 157          0,                     /* bitpos */
 158          complain_overflow_dont, /* complain_on_overflow */
 159          NULL,                  /* special_function */
 160          "R_386_GNU_VTINHERIT", /* name */
 161          FALSE,                 /* partial_inplace */
 162          0,                     /* src_mask */
 163          0,                     /* dst_mask */
 164          FALSE),                /* pcrel_offset */
 165
 166 /* GNU extension to record C++ vtable member usage.  */
 167   HOWTO (R_386_GNU_VTENTRY,     /* type */
 168          0,                     /* rightshift */
 169          2,                     /* size (0 = byte, 1 = short, 2 = long) */
 170          0,                     /* bitsize */
 171          FALSE,                 /* pc_relative */
 172          0,                     /* bitpos */
 173          complain_overflow_dont, /* complain_on_overflow */
 174          _bfd_elf_rel_vtable_reloc_fn, /* special_function */
 175          "R_386_GNU_VTENTRY",   /* name */
 176          FALSE,                 /* partial_inplace */
 177          0,                     /* src_mask */
 178          0,                     /* dst_mask */
 179          FALSE)                 /* pcrel_offset */
 180
 181 #define R_386_vt (R_386_GNU_VTENTRY + 1 - R_386_vt_offset)
 182
 183 };
 184
 185 #ifdef DEBUG_GEN_RELOC
 186 #define TRACE(str) \
 187   fprintf (stderr, "i386 bfd reloc lookup %d (%s)\n", code, str)
 188 #else
 189 #define TRACE(str)
 190 #endif
 191
 192 static reloc_howto_type *
 193 elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
 194                             bfd_reloc_code_real_type code)
 195 {
 196   switch (code)
 197     {
 198     case BFD_RELOC_NONE:
 199       TRACE ("BFD_RELOC_NONE");
 200       return &elf_howto_table[R_386_NONE];
 201
 202     case BFD_RELOC_32:
 203       TRACE ("BFD_RELOC_32");
 204       return &elf_howto_table[R_386_32];
 205
 206     case BFD_RELOC_CTOR:
 207       TRACE ("BFD_RELOC_CTOR");
 208       return &elf_howto_table[R_386_32];
 209
 210     case BFD_RELOC_32_PCREL:
 211       TRACE ("BFD_RELOC_PC32");
 212       return &elf_howto_table[R_386_PC32];
 213
 214     case BFD_RELOC_386_GOT32:
 215       TRACE ("BFD_RELOC_386_GOT32");
 216       return &elf_howto_table[R_386_GOT32];
 217
 218     case BFD_RELOC_386_PLT32:
 219       TRACE ("BFD_RELOC_386_PLT32");
 220       return &elf_howto_table[R_386_PLT32];
 221
 222     case BFD_RELOC_386_COPY:
 223       TRACE ("BFD_RELOC_386_COPY");
 224       return &elf_howto_table[R_386_COPY];
 225
 226     case BFD_RELOC_386_GLOB_DAT:
 227       TRACE ("BFD_RELOC_386_GLOB_DAT");
 228       return &elf_howto_table[R_386_GLOB_DAT];
 229
 230     case BFD_RELOC_386_JUMP_SLOT:
 231       TRACE ("BFD_RELOC_386_JUMP_SLOT");
 232       return &elf_howto_table[R_386_JUMP_SLOT];
 233
 234     case BFD_RELOC_386_RELATIVE:
 235       TRACE ("BFD_RELOC_386_RELATIVE");
 236       return &elf_howto_table[R_386_RELATIVE];
 237
 238     case BFD_RELOC_386_GOTOFF:
 239       TRACE ("BFD_RELOC_386_GOTOFF");
 240       return &elf_howto_table[R_386_GOTOFF];
 241
 242     case BFD_RELOC_386_GOTPC:
 243       TRACE ("BFD_RELOC_386_GOTPC");
 244       return &elf_howto_table[R_386_GOTPC];
 245
 246       /* These relocs are a GNU extension.  */
 247     case BFD_RELOC_386_TLS_TPOFF:
 248       TRACE ("BFD_RELOC_386_TLS_TPOFF");
 249       return &elf_howto_table[R_386_TLS_TPOFF - R_386_ext_offset];
 250
 251     case BFD_RELOC_386_TLS_IE:
 252       TRACE ("BFD_RELOC_386_TLS_IE");
 253       return &elf_howto_table[R_386_TLS_IE - R_386_ext_offset];
 254
 255     case BFD_RELOC_386_TLS_GOTIE:
 256       TRACE ("BFD_RELOC_386_TLS_GOTIE");
 257       return &elf_howto_table[R_386_TLS_GOTIE - R_386_ext_offset];
 258
 259     case BFD_RELOC_386_TLS_LE:
 260       TRACE ("BFD_RELOC_386_TLS_LE");
 261       return &elf_howto_table[R_386_TLS_LE - R_386_ext_offset];
 262
 263     case BFD_RELOC_386_TLS_GD:
 264       TRACE ("BFD_RELOC_386_TLS_GD");
 265       return &elf_howto_table[R_386_TLS_GD - R_386_ext_offset];
 266
 267     case BFD_RELOC_386_TLS_LDM:
 268       TRACE ("BFD_RELOC_386_TLS_LDM");
 269       return &elf_howto_table[R_386_TLS_LDM - R_386_ext_offset];
 270
 271     case BFD_RELOC_16:
 272       TRACE ("BFD_RELOC_16");
 273       return &elf_howto_table[R_386_16 - R_386_ext_offset];
 274
 275     case BFD_RELOC_16_PCREL:
 276       TRACE ("BFD_RELOC_16_PCREL");
 277       return &elf_howto_table[R_386_PC16 - R_386_ext_offset];
 278
 279     case BFD_RELOC_8:
 280       TRACE ("BFD_RELOC_8");
 281       return &elf_howto_table[R_386_8 - R_386_ext_offset];
 282
 283     case BFD_RELOC_8_PCREL:
 284       TRACE ("BFD_RELOC_8_PCREL");
 285       return &elf_howto_table[R_386_PC8 - R_386_ext_offset];
 286
 287     /* Common with Sun TLS implementation.  */
 288     case BFD_RELOC_386_TLS_LDO_32:
 289       TRACE ("BFD_RELOC_386_TLS_LDO_32");
 290       return &elf_howto_table[R_386_TLS_LDO_32 - R_386_tls_offset];
 291
 292     case BFD_RELOC_386_TLS_IE_32:
 293       TRACE ("BFD_RELOC_386_TLS_IE_32");
 294       return &elf_howto_table[R_386_TLS_IE_32 - R_386_tls_offset];
 295
 296     case BFD_RELOC_386_TLS_LE_32:
 297       TRACE ("BFD_RELOC_386_TLS_LE_32");
 298       return &elf_howto_table[R_386_TLS_LE_32 - R_386_tls_offset];
 299
 300     case BFD_RELOC_386_TLS_DTPMOD32:
 301       TRACE ("BFD_RELOC_386_TLS_DTPMOD32");
 302       return &elf_howto_table[R_386_TLS_DTPMOD32 - R_386_tls_offset];
 303
 304     case BFD_RELOC_386_TLS_DTPOFF32:
 305       TRACE ("BFD_RELOC_386_TLS_DTPOFF32");
 306       return &elf_howto_table[R_386_TLS_DTPOFF32 - R_386_tls_offset];
 307
 308     case BFD_RELOC_386_TLS_TPOFF32:
 309       TRACE ("BFD_RELOC_386_TLS_TPOFF32");
 310       return &elf_howto_table[R_386_TLS_TPOFF32 - R_386_tls_offset];
 311
 312     case BFD_RELOC_386_TLS_GOTDESC:
 313       TRACE ("BFD_RELOC_386_TLS_GOTDESC");
 314       return &elf_howto_table[R_386_TLS_GOTDESC - R_386_tls_offset];
 315
 316     case BFD_RELOC_386_TLS_DESC_CALL:
 317       TRACE ("BFD_RELOC_386_TLS_DESC_CALL");
 318       return &elf_howto_table[R_386_TLS_DESC_CALL - R_386_tls_offset];
 319
 320     case BFD_RELOC_386_TLS_DESC:
 321       TRACE ("BFD_RELOC_386_TLS_DESC");
 322       return &elf_howto_table[R_386_TLS_DESC - R_386_tls_offset];
 323
 324     case BFD_RELOC_386_IRELATIVE:
 325       TRACE ("BFD_RELOC_386_IRELATIVE");
 326       return &elf_howto_table[R_386_IRELATIVE];
 327
 328     case BFD_RELOC_VTABLE_INHERIT:
 329       TRACE ("BFD_RELOC_VTABLE_INHERIT");
 330       return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
 331
 332     case BFD_RELOC_VTABLE_ENTRY:
 333       TRACE ("BFD_RELOC_VTABLE_ENTRY");
 334       return &elf_howto_table[R_386_GNU_VTENTRY - R_386_vt_offset];
 335
 336     default:
 337       break;
 338     }
 339
 340   TRACE ("Unknown");
 341   return 0;
 342 }
 343
 344 static reloc_howto_type *
 345 elf_i386_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
 346                             const char *r_name)
 347 {
 348   unsigned int i;
 349
 350   for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++)
 351     if (elf_howto_table[i].name != NULL
 352         && strcasecmp (elf_howto_table[i].name, r_name) == 0)
 353       return &elf_howto_table[i];
 354
 355   return NULL;
 356 }
 357
 358 static reloc_howto_type *
 359 elf_i386_rtype_to_howto (bfd *abfd, unsigned r_type)
 360 {
 361   unsigned int indx;
 362
 363   if ((indx = r_type) >= R_386_standard
 364       && ((indx = r_type - R_386_ext_offset) - R_386_standard
 365           >= R_386_ext - R_386_standard)
 366       && ((indx = r_type - R_386_tls_offset) - R_386_ext
 367           >= R_386_irelative - R_386_ext)
 368       && ((indx = r_type - R_386_vt_offset) - R_386_irelative
 369           >= R_386_vt - R_386_irelative))
 370     {
 371       (*_bfd_error_handler) (_("%B: invalid relocation type %d"),
 372                              abfd, (int) r_type);
 373       indx = R_386_NONE;
 374     }
 375   BFD_ASSERT (elf_howto_table [indx].type == r_type);
 376   return &elf_howto_table[indx];
 377 }
 378
 379 static void
 380 elf_i386_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
 381                             arelent *cache_ptr,
 382                             Elf_Internal_Rela *dst)
 383 {
 384   unsigned int r_type = ELF32_R_TYPE (dst->r_info);
 385   cache_ptr->howto = elf_i386_rtype_to_howto (abfd, r_type);
 386 }
 387
 388 /* Return whether a symbol name implies a local label.  The UnixWare
 389    2.1 cc generates temporary symbols that start with .X, so we
 390    recognize them here.  FIXME: do other SVR4 compilers also use .X?.
 391    If so, we should move the .X recognition into
 392    _bfd_elf_is_local_label_name.  */
 393
 394 static bfd_boolean
 395 elf_i386_is_local_label_name (bfd *abfd, const char *name)
 396 {
 397   if (name[0] == '.' && name[1] == 'X')
 398     return TRUE;
 399
 400   return _bfd_elf_is_local_label_name (abfd, name);
 401 }
 402 \f
 403 /* Support for core dump NOTE sections.  */
 404
 405 static bfd_boolean
 406 elf_i386_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
 407 {
 408   int offset;
 409   size_t size;
 410
 411   if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
 412     {
 413       int pr_version = bfd_get_32 (abfd, note->descdata);
 414
 415       if (pr_version != 1)
 416         return FALSE;
 417
 418       /* pr_cursig */
 419       elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 20);
 420
 421       /* pr_pid */
 422       elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
 423
 424       /* pr_reg */
 425       offset = 28;
 426       size = bfd_get_32 (abfd, note->descdata + 8);
 427     }
 428   else
 429     {
 430       switch (note->descsz)
 431         {
 432         default:
 433           return FALSE;
 434
 435         case 144:               /* Linux/i386 */
 436           /* pr_cursig */
 437           elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
 438
 439           /* pr_pid */
 440           elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
 441
 442           /* pr_reg */
 443           offset = 72;
 444           size = 68;
 445
 446           break;
 447         }
 448     }
 449
 450   /* Make a ".reg/999" section.  */
 451   return _bfd_elfcore_make_pseudosection (abfd, ".reg",
 452                                           size, note->descpos + offset);
 453 }
 454
 455 static bfd_boolean
 456 elf_i386_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
 457 {
 458   if (note->namesz == 8 && strcmp (note->namedata, "FreeBSD") == 0)
 459     {
 460       int pr_version = bfd_get_32 (abfd, note->descdata);
 461
 462       if (pr_version != 1)
 463         return FALSE;
 464
 465       elf_tdata (abfd)->core_program
 466         = _bfd_elfcore_strndup (abfd, note->descdata + 8, 17);
 467       elf_tdata (abfd)->core_command
 468         = _bfd_elfcore_strndup (abfd, note->descdata + 25, 81);
 469     }
 470   else
 471     {
 472       switch (note->descsz)
 473         {
 474         default:
 475           return FALSE;
 476
 477         case 124:               /* Linux/i386 elf_prpsinfo.  */
 478           elf_tdata (abfd)->core_program
 479             = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
 480           elf_tdata (abfd)->core_command
 481             = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
 482         }
 483     }
 484
 485   /* Note that for some reason, a spurious space is tacked
 486      onto the end of the args in some (at least one anyway)
 487      implementations, so strip it off if it exists.  */
 488   {
 489     char *command = elf_tdata (abfd)->core_command;
 490     int n = strlen (command);
 491
 492     if (0 < n && command[n - 1] == ' ')
 493       command[n - 1] = '\0';
 494   }
 495
 496   return TRUE;
 497 }
 498 \f
 499 /* Functions for the i386 ELF linker.
 500
 501    In order to gain some understanding of code in this file without
 502    knowing all the intricate details of the linker, note the
 503    following:
 504
 505    Functions named elf_i386_* are called by external routines, other
 506    functions are only called locally.  elf_i386_* functions appear
 507    in this file more or less in the order in which they are called
 508    from external routines.  eg. elf_i386_check_relocs is called
 509    early in the link process, elf_i386_finish_dynamic_sections is
 510    one of the last functions.  */
 511
 512
 513 /* The name of the dynamic interpreter.  This is put in the .interp
 514    section.  */
 515
 516 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
 517
 518 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
 519    copying dynamic variables from a shared lib into an app's dynbss
 520    section, and instead use a dynamic relocation to point into the
 521    shared lib.  */
 522 #define ELIMINATE_COPY_RELOCS 1
 523
 524 /* The size in bytes of an entry in the procedure linkage table.  */
 525
 526 #define PLT_ENTRY_SIZE 16
 527
 528 /* The first entry in an absolute procedure linkage table looks like
 529    this.  See the SVR4 ABI i386 supplement to see how this works.
 530    Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte.  */
 531
 532 static const bfd_byte elf_i386_plt0_entry[12] =
 533 {
 534   0xff, 0x35,   /* pushl contents of address */
 535   0, 0, 0, 0,   /* replaced with address of .got + 4.  */
 536   0xff, 0x25,   /* jmp indirect */
 537   0, 0, 0, 0    /* replaced with address of .got + 8.  */
 538 };
 539
 540 /* Subsequent entries in an absolute procedure linkage table look like
 541    this.  */
 542
 543 static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
 544 {
 545   0xff, 0x25,   /* jmp indirect */
 546   0, 0, 0, 0,   /* replaced with address of this symbol in .got.  */
 547   0x68,         /* pushl immediate */
 548   0, 0, 0, 0,   /* replaced with offset into relocation table.  */
 549   0xe9,         /* jmp relative */
 550   0, 0, 0, 0    /* replaced with offset to start of .plt.  */
 551 };
 552
 553 /* The first entry in a PIC procedure linkage table look like this.
 554    Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte.  */
 555
 556 static const bfd_byte elf_i386_pic_plt0_entry[12] =
 557 {
 558   0xff, 0xb3, 4, 0, 0, 0,       /* pushl 4(%ebx) */
 559   0xff, 0xa3, 8, 0, 0, 0        /* jmp *8(%ebx) */
 560 };
 561
 562 /* Subsequent entries in a PIC procedure linkage table look like this.  */
 563
 564 static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
 565 {
 566   0xff, 0xa3,   /* jmp *offset(%ebx) */
 567   0, 0, 0, 0,   /* replaced with offset of this symbol in .got.  */
 568   0x68,         /* pushl immediate */
 569   0, 0, 0, 0,   /* replaced with offset into relocation table.  */
 570   0xe9,         /* jmp relative */
 571   0, 0, 0, 0    /* replaced with offset to start of .plt.  */
 572 };
 573
 574 /* On VxWorks, the .rel.plt.unloaded section has absolute relocations
 575    for the PLTResolve stub and then for each PLT entry.  */
 576 #define PLTRESOLVE_RELOCS_SHLIB 0
 577 #define PLTRESOLVE_RELOCS 2
 578 #define PLT_NON_JUMP_SLOT_RELOCS 2
 579
 580 /* i386 ELF linker hash entry.  */
 581
 582 struct elf_i386_link_hash_entry
 583 {
 584   struct elf_link_hash_entry elf;
 585
 586   /* Track dynamic relocs copied for this symbol.  */
 587   struct elf_dyn_relocs *dyn_relocs;
 588
 589 #define GOT_UNKNOWN     0
 590 #define GOT_NORMAL      1
 591 #define GOT_TLS_GD      2
 592 #define GOT_TLS_IE      4
 593 #define GOT_TLS_IE_POS  5
 594 #define GOT_TLS_IE_NEG  6
 595 #define GOT_TLS_IE_BOTH 7
 596 #define GOT_TLS_GDESC   8
 597 #define GOT_TLS_GD_BOTH_P(type)                                         \
 598   ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
 599 #define GOT_TLS_GD_P(type)                                              \
 600   ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
 601 #define GOT_TLS_GDESC_P(type)                                           \
 602   ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
 603 #define GOT_TLS_GD_ANY_P(type)                                          \
 604   (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
 605   unsigned char tls_type;
 606
 607   /* Offset of the GOTPLT entry reserved for the TLS descriptor,
 608      starting at the end of the jump table.  */
 609   bfd_vma tlsdesc_got;
 610 };
 611
 612 #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
 613
 614 struct elf_i386_obj_tdata
 615 {
 616   struct elf_obj_tdata root;
 617
 618   /* tls_type for each local got entry.  */
 619   char *local_got_tls_type;
 620
 621   /* GOTPLT entries for TLS descriptors.  */
 622   bfd_vma *local_tlsdesc_gotent;
 623 };
 624
 625 #define elf_i386_tdata(abfd) \
 626   ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
 627
 628 #define elf_i386_local_got_tls_type(abfd) \
 629   (elf_i386_tdata (abfd)->local_got_tls_type)
 630
 631 #define elf_i386_local_tlsdesc_gotent(abfd) \
 632   (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
 633
 634 #define is_i386_elf(bfd)                                \
 635   (bfd_get_flavour (bfd) == bfd_target_elf_flavour      \
 636    && elf_tdata (bfd) != NULL                           \
 637    && elf_object_id (bfd) == I386_ELF_DATA)
 638
 639 static bfd_boolean
 640 elf_i386_mkobject (bfd *abfd)
 641 {
 642   return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
 643                                   I386_ELF_DATA);
 644 }
 645
 646 /* i386 ELF linker hash table.  */
 647
 648 struct elf_i386_link_hash_table
 649 {
 650   struct elf_link_hash_table elf;
 651
 652   /* Short-cuts to get to dynamic linker sections.  */
 653   asection *sdynbss;
 654   asection *srelbss;
 655
 656   union
 657   {
 658     bfd_signed_vma refcount;
 659     bfd_vma offset;
 660   } tls_ldm_got;
 661
 662   /* The amount of space used by the reserved portion of the sgotplt
 663      section, plus whatever space is used by the jump slots.  */
 664   bfd_vma sgotplt_jump_table_size;
 665
 666   /* Small local sym cache.  */
 667   struct sym_cache sym_cache;
 668
 669   /* _TLS_MODULE_BASE_ symbol.  */
 670   struct bfd_link_hash_entry *tls_module_base;
 671
 672   /* Used by local STT_GNU_IFUNC symbols.  */
 673   htab_t loc_hash_table;
 674   void * loc_hash_memory;
 675
 676   /* The (unloaded but important) .rel.plt.unloaded section on VxWorks.  */
 677   asection *srelplt2;
 678
 679   /* True if the target system is VxWorks.  */
 680   int is_vxworks;
 681
 682   /* The index of the next unused R_386_TLS_DESC slot in .rel.plt.  */
 683   bfd_vma next_tls_desc_index;
 684
 685   /* Value used to fill the last word of the first plt entry.  */
 686   bfd_byte plt0_pad_byte;
 687 };
 688
 689 /* Get the i386 ELF linker hash table from a link_info structure.  */
 690
 691 #define elf_i386_hash_table(p) \
 692   (elf_hash_table_id  ((struct elf_link_hash_table *) ((p)->hash)) \
 693   == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
 694
 695 #define elf_i386_compute_jump_table_size(htab) \
 696   ((htab)->next_tls_desc_index * 4)
 697
 698 /* Create an entry in an i386 ELF linker hash table.  */
 699
 700 static struct bfd_hash_entry *
 701 elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
 702                             struct bfd_hash_table *table,
 703                             const char *string)
 704 {
 705   /* Allocate the structure if it has not already been allocated by a
 706      subclass.  */
 707   if (entry == NULL)
 708     {
 709       entry = (struct bfd_hash_entry *)
 710           bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
 711       if (entry == NULL)
 712         return entry;
 713     }
 714
 715   /* Call the allocation method of the superclass.  */
 716   entry = _bfd_elf_link_hash_newfunc (entry, table, string);
 717   if (entry != NULL)
 718     {
 719       struct elf_i386_link_hash_entry *eh;
 720
 721       eh = (struct elf_i386_link_hash_entry *) entry;
 722       eh->dyn_relocs = NULL;
 723       eh->tls_type = GOT_UNKNOWN;
 724       eh->tlsdesc_got = (bfd_vma) -1;
 725     }
 726
 727   return entry;
 728 }
 729
 730 /* Compute a hash of a local hash entry.  We use elf_link_hash_entry
 731   for local symbol so that we can handle local STT_GNU_IFUNC symbols
 732   as global symbol.  We reuse indx and dynstr_index for local symbol
 733   hash since they aren't used by global symbols in this backend.  */
 734
 735 static hashval_t
 736 elf_i386_local_htab_hash (const void *ptr)
 737 {
 738   struct elf_link_hash_entry *h
 739     = (struct elf_link_hash_entry *) ptr;
 740   return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
 741 }
 742
 743 /* Compare local hash entries.  */
 744
 745 static int
 746 elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
 747 {
 748   struct elf_link_hash_entry *h1
 749      = (struct elf_link_hash_entry *) ptr1;
 750   struct elf_link_hash_entry *h2
 751     = (struct elf_link_hash_entry *) ptr2;
 752
 753   return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
 754 }
 755
 756 /* Find and/or create a hash entry for local symbol.  */
 757
 758 static struct elf_link_hash_entry *
 759 elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
 760                              bfd *abfd, const Elf_Internal_Rela *rel,
 761                              bfd_boolean create)
 762 {
 763   struct elf_i386_link_hash_entry e, *ret;
 764   asection *sec = abfd->sections;
 765   hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
 766                                        ELF32_R_SYM (rel->r_info));
 767   void **slot;
 768
 769   e.elf.indx = sec->id;
 770   e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
 771   slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
 772                                    create ? INSERT : NO_INSERT);
 773
 774   if (!slot)
 775     return NULL;
 776
 777   if (*slot)
 778     {
 779       ret = (struct elf_i386_link_hash_entry *) *slot;
 780       return &ret->elf;
 781     }
 782
 783   ret = (struct elf_i386_link_hash_entry *)
 784         objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
 785                         sizeof (struct elf_i386_link_hash_entry));
 786   if (ret)
 787     {
 788       memset (ret, 0, sizeof (*ret));
 789       ret->elf.indx = sec->id;
 790       ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
 791       ret->elf.dynindx = -1;
 792       ret->elf.plt.offset = (bfd_vma) -1;
 793       ret->elf.got.offset = (bfd_vma) -1;
 794       *slot = ret;
 795     }
 796   return &ret->elf;
 797 }
 798
 799 /* Create an i386 ELF linker hash table.  */
 800
 801 static struct bfd_link_hash_table *
 802 elf_i386_link_hash_table_create (bfd *abfd)
 803 {
 804   struct elf_i386_link_hash_table *ret;
 805   bfd_size_type amt = sizeof (struct elf_i386_link_hash_table);
 806
 807   ret = (struct elf_i386_link_hash_table *) bfd_malloc (amt);
 808   if (ret == NULL)
 809     return NULL;
 810
 811   if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
 812                                       elf_i386_link_hash_newfunc,
 813                                       sizeof (struct elf_i386_link_hash_entry),
 814                                       I386_ELF_DATA))
 815     {
 816       free (ret);
 817       return NULL;
 818     }
 819
 820   ret->sdynbss = NULL;
 821   ret->srelbss = NULL;
 822   ret->tls_ldm_got.refcount = 0;
 823   ret->next_tls_desc_index = 0;
 824   ret->sgotplt_jump_table_size = 0;
 825   ret->sym_cache.abfd = NULL;
 826   ret->is_vxworks = 0;
 827   ret->srelplt2 = NULL;
 828   ret->plt0_pad_byte = 0;
 829   ret->tls_module_base = NULL;
 830
 831   ret->loc_hash_table = htab_try_create (1024,
 832                                          elf_i386_local_htab_hash,
 833                                          elf_i386_local_htab_eq,
 834                                          NULL);
 835   ret->loc_hash_memory = objalloc_create ();
 836   if (!ret->loc_hash_table || !ret->loc_hash_memory)
 837     {
 838       free (ret);
 839       return NULL;
 840     }
 841
 842   return &ret->elf.root;
 843 }
 844
 845 /* Destroy an i386 ELF linker hash table.  */
 846
 847 static void
 848 elf_i386_link_hash_table_free (struct bfd_link_hash_table *hash)
 849 {
 850   struct elf_i386_link_hash_table *htab
 851     = (struct elf_i386_link_hash_table *) hash;
 852
 853   if (htab->loc_hash_table)
 854     htab_delete (htab->loc_hash_table);
 855   if (htab->loc_hash_memory)
 856     objalloc_free ((struct objalloc *) htab->loc_hash_memory);
 857   _bfd_generic_link_hash_table_free (hash);
 858 }
 859
 860 /* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
 861    .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
 862    hash table.  */
 863
 864 static bfd_boolean
 865 elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
 866 {
 867   struct elf_i386_link_hash_table *htab;
 868
 869   if (!_bfd_elf_create_dynamic_sections (dynobj, info))
 870     return FALSE;
 871
 872   htab = elf_i386_hash_table (info);
 873   if (htab == NULL)
 874     return FALSE;
 875
 876   htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
 877   if (!info->shared)
 878     htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
 879
 880   if (!htab->sdynbss
 881       || (!info->shared && !htab->srelbss))
 882     abort ();
 883
 884   if (htab->is_vxworks
 885       && !elf_vxworks_create_dynamic_sections (dynobj, info,
 886                                                &htab->srelplt2))
 887     return FALSE;
 888
 889   return TRUE;
 890 }
 891
 892 /* Copy the extra info we tack onto an elf_link_hash_entry.  */
 893
 894 static void
 895 elf_i386_copy_indirect_symbol (struct bfd_link_info *info,
 896                                struct elf_link_hash_entry *dir,
 897                                struct elf_link_hash_entry *ind)
 898 {
 899   struct elf_i386_link_hash_entry *edir, *eind;
 900
 901   edir = (struct elf_i386_link_hash_entry *) dir;
 902   eind = (struct elf_i386_link_hash_entry *) ind;
 903
 904   if (eind->dyn_relocs != NULL)
 905     {
 906       if (edir->dyn_relocs != NULL)
 907         {
 908           struct elf_dyn_relocs **pp;
 909           struct elf_dyn_relocs *p;
 910
 911           /* Add reloc counts against the indirect sym to the direct sym
 912              list.  Merge any entries against the same section.  */
 913           for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
 914             {
 915               struct elf_dyn_relocs *q;
 916
 917               for (q = edir->dyn_relocs; q != NULL; q = q->next)
 918                 if (q->sec == p->sec)
 919                   {
 920                     q->pc_count += p->pc_count;
 921                     q->count += p->count;
 922                     *pp = p->next;
 923                     break;
 924                   }
 925               if (q == NULL)
 926                 pp = &p->next;
 927             }
 928           *pp = edir->dyn_relocs;
 929         }
 930
 931       edir->dyn_relocs = eind->dyn_relocs;
 932       eind->dyn_relocs = NULL;
 933     }
 934
 935   if (ind->root.type == bfd_link_hash_indirect
 936       && dir->got.refcount <= 0)
 937     {
 938       edir->tls_type = eind->tls_type;
 939       eind->tls_type = GOT_UNKNOWN;
 940     }
 941
 942   if (ELIMINATE_COPY_RELOCS
 943       && ind->root.type != bfd_link_hash_indirect
 944       && dir->dynamic_adjusted)
 945     {
 946       /* If called to transfer flags for a weakdef during processing
 947          of elf_adjust_dynamic_symbol, don't copy non_got_ref.
 948          We clear it ourselves for ELIMINATE_COPY_RELOCS.  */
 949       dir->ref_dynamic |= ind->ref_dynamic;
 950       dir->ref_regular |= ind->ref_regular;
 951       dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
 952       dir->needs_plt |= ind->needs_plt;
 953       dir->pointer_equality_needed |= ind->pointer_equality_needed;
 954     }
 955   else
 956     _bfd_elf_link_hash_copy_indirect (info, dir, ind);
 957 }
 958
 959 typedef union
 960   {
 961     unsigned char c[2];
 962     uint16_t i;
 963   }
 964 i386_opcode16;
 965
 966 /* Return TRUE if the TLS access code sequence support transition
 967    from R_TYPE.  */
 968
 969 static bfd_boolean
 970 elf_i386_check_tls_transition (bfd *abfd, asection *sec,
 971                                bfd_byte *contents,
 972                                Elf_Internal_Shdr *symtab_hdr,
 973                                struct elf_link_hash_entry **sym_hashes,
 974                                unsigned int r_type,
 975                                const Elf_Internal_Rela *rel,
 976                                const Elf_Internal_Rela *relend)
 977 {
 978   unsigned int val, type;
 979   unsigned long r_symndx;
 980   struct elf_link_hash_entry *h;
 981   bfd_vma offset;
 982
 983   /* Get the section contents.  */
 984   if (contents == NULL)
 985     {
 986       if (elf_section_data (sec)->this_hdr.contents != NULL)
 987         contents = elf_section_data (sec)->this_hdr.contents;
 988       else
 989         {
 990           /* FIXME: How to better handle error condition?  */
 991           if (!bfd_malloc_and_get_section (abfd, sec, &contents))
 992             return FALSE;
 993
 994           /* Cache the section contents for elf_link_input_bfd.  */
 995           elf_section_data (sec)->this_hdr.contents = contents;
 996         }
 997     }
 998
 999   offset = rel->r_offset;
1000   switch (r_type)
1001     {
1002     case R_386_TLS_GD:
1003     case R_386_TLS_LDM:
1004       if (offset < 2 || (rel + 1) >= relend)
1005         return FALSE;
1006
1007       type = bfd_get_8 (abfd, contents + offset - 2);
1008       if (r_type == R_386_TLS_GD)
1009         {
1010           /* Check transition from GD access model.  Only
1011                 leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr
1012                 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop
1013              can transit to different access model.  */
1014           if ((offset + 10) > sec->size ||
1015               (type != 0x8d && type != 0x04))
1016             return FALSE;
1017
1018           val = bfd_get_8 (abfd, contents + offset - 1);
1019           if (type == 0x04)
1020             {
1021               /* leal foo@tlsgd(,%reg,1), %eax; call ___tls_get_addr */
1022               if (offset < 3)
1023                 return FALSE;
1024
1025               if (bfd_get_8 (abfd, contents + offset - 3) != 0x8d)
1026                 return FALSE;
1027
1028               if ((val & 0xc7) != 0x05 || val == (4 << 3))
1029                 return FALSE;
1030             }
1031           else
1032             {
1033               /* leal foo@tlsgd(%reg), %eax; call ___tls_get_addr; nop  */
1034               if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1035                 return FALSE;
1036
1037               if (bfd_get_8 (abfd, contents + offset + 9) != 0x90)
1038                 return FALSE;
1039             }
1040         }
1041       else
1042         {
1043           /* Check transition from LD access model.  Only
1044                 leal foo@tlsgd(%reg), %eax; call ___tls_get_addr
1045              can transit to different access model.  */
1046           if (type != 0x8d || (offset + 9) > sec->size)
1047             return FALSE;
1048
1049           val = bfd_get_8 (abfd, contents + offset - 1);
1050           if ((val & 0xf8) != 0x80 || (val & 7) == 4)
1051             return FALSE;
1052         }
1053
1054       if (bfd_get_8 (abfd, contents + offset + 4) != 0xe8)
1055         return FALSE;
1056
1057       r_symndx = ELF32_R_SYM (rel[1].r_info);
1058       if (r_symndx < symtab_hdr->sh_info)
1059         return FALSE;
1060
1061       h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1062       /* Use strncmp to check ___tls_get_addr since ___tls_get_addr
1063          may be versioned.  */
1064       return (h != NULL
1065               && h->root.root.string != NULL
1066               && (ELF32_R_TYPE (rel[1].r_info) == R_386_PC32
1067                   || ELF32_R_TYPE (rel[1].r_info) == R_386_PLT32)
1068               && (strncmp (h->root.root.string, "___tls_get_addr",
1069                            15) == 0));
1070
1071     case R_386_TLS_IE:
1072       /* Check transition from IE access model:
1073                 movl foo@indntpoff(%rip), %eax
1074                 movl foo@indntpoff(%rip), %reg
1075                 addl foo@indntpoff(%rip), %reg
1076        */
1077
1078       if (offset < 1 || (offset + 4) > sec->size)
1079         return FALSE;
1080
1081       /* Check "movl foo@tpoff(%rip), %eax" first.  */
1082       val = bfd_get_8 (abfd, contents + offset - 1);
1083       if (val == 0xa1)
1084         return TRUE;
1085
1086       if (offset < 2)
1087         return FALSE;
1088
1089       /* Check movl|addl foo@tpoff(%rip), %reg.   */
1090       type = bfd_get_8 (abfd, contents + offset - 2);
1091       return ((type == 0x8b || type == 0x03)
1092               && (val & 0xc7) == 0x05);
1093
1094     case R_386_TLS_GOTIE:
1095     case R_386_TLS_IE_32:
1096       /* Check transition from {IE_32,GOTIE} access model:
1097                 subl foo@{tpoff,gontoff}(%reg1), %reg2
1098                 movl foo@{tpoff,gontoff}(%reg1), %reg2
1099                 addl foo@{tpoff,gontoff}(%reg1), %reg2
1100        */
1101
1102       if (offset < 2 || (offset + 4) > sec->size)
1103         return FALSE;
1104
1105       val = bfd_get_8 (abfd, contents + offset - 1);
1106       if ((val & 0xc0) != 0x80 || (val & 7) == 4)
1107         return FALSE;
1108
1109       type = bfd_get_8 (abfd, contents + offset - 2);
1110       return type == 0x8b || type == 0x2b || type == 0x03;
1111
1112     case R_386_TLS_GOTDESC:
1113       /* Check transition from GDesc access model:
1114                 leal x@tlsdesc(%ebx), %eax
1115
1116          Make sure it's a leal adding ebx to a 32-bit offset
1117          into any register, although it's probably almost always
1118          going to be eax.  */
1119
1120       if (offset < 2 || (offset + 4) > sec->size)
1121         return FALSE;
1122
1123       if (bfd_get_8 (abfd, contents + offset - 2) != 0x8d)
1124         return FALSE;
1125
1126       val = bfd_get_8 (abfd, contents + offset - 1);
1127       return (val & 0xc7) == 0x83;
1128
1129     case R_386_TLS_DESC_CALL:
1130       /* Check transition from GDesc access model:
1131                 call *x@tlsdesc(%rax)
1132        */
1133       if (offset + 2 <= sec->size)
1134         {
1135           /* Make sure that it's a call *x@tlsdesc(%rax).  */
1136           static i386_opcode16 call = { { 0xff, 0x10 } };
1137           return bfd_get_16 (abfd, contents + offset) == call.i;
1138         }
1139
1140       return FALSE;
1141
1142     default:
1143       abort ();
1144     }
1145 }
1146
1147 /* Return TRUE if the TLS access transition is OK or no transition
1148    will be performed.  Update R_TYPE if there is a transition.  */
1149
1150 static bfd_boolean
1151 elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
1152                          asection *sec, bfd_byte *contents,
1153                          Elf_Internal_Shdr *symtab_hdr,
1154                          struct elf_link_hash_entry **sym_hashes,
1155                          unsigned int *r_type, int tls_type,
1156                          const Elf_Internal_Rela *rel,
1157                          const Elf_Internal_Rela *relend,
1158                          struct elf_link_hash_entry *h,
1159                          unsigned long r_symndx)
1160 {
1161   unsigned int from_type = *r_type;
1162   unsigned int to_type = from_type;
1163   bfd_boolean check = TRUE;
1164
1165   switch (from_type)
1166     {
1167     case R_386_TLS_GD:
1168     case R_386_TLS_GOTDESC:
1169     case R_386_TLS_DESC_CALL:
1170     case R_386_TLS_IE_32:
1171     case R_386_TLS_IE:
1172     case R_386_TLS_GOTIE:
1173       if (info->executable)
1174         {
1175           if (h == NULL)
1176             to_type = R_386_TLS_LE_32;
1177           else if (from_type != R_386_TLS_IE
1178                    && from_type != R_386_TLS_GOTIE)
1179             to_type = R_386_TLS_IE_32;
1180         }
1181
1182       /* When we are called from elf_i386_relocate_section, CONTENTS
1183          isn't NULL and there may be additional transitions based on
1184          TLS_TYPE.  */
1185       if (contents != NULL)
1186         {
1187           unsigned int new_to_type = to_type;
1188
1189           if (info->executable
1190               && h != NULL
1191               && h->dynindx == -1
1192               && (tls_type & GOT_TLS_IE))
1193             new_to_type = R_386_TLS_LE_32;
1194
1195           if (to_type == R_386_TLS_GD
1196               || to_type == R_386_TLS_GOTDESC
1197               || to_type == R_386_TLS_DESC_CALL)
1198             {
1199               if (tls_type == GOT_TLS_IE_POS)
1200                 new_to_type = R_386_TLS_GOTIE;
1201               else if (tls_type & GOT_TLS_IE)
1202                 new_to_type = R_386_TLS_IE_32;
1203             }
1204
1205           /* We checked the transition before when we were called from
1206              elf_i386_check_relocs.  We only want to check the new
1207              transition which hasn't been checked before.  */
1208           check = new_to_type != to_type && from_type == to_type;
1209           to_type = new_to_type;
1210         }
1211
1212       break;
1213
1214     case R_386_TLS_LDM:
1215       if (info->executable)
1216         to_type = R_386_TLS_LE_32;
1217       break;
1218
1219     default:
1220       return TRUE;
1221     }
1222
1223   /* Return TRUE if there is no transition.  */
1224   if (from_type == to_type)
1225     return TRUE;
1226
1227   /* Check if the transition can be performed.  */
1228   if (check
1229       && ! elf_i386_check_tls_transition (abfd, sec, contents,
1230                                           symtab_hdr, sym_hashes,
1231                                           from_type, rel, relend))
1232     {
1233       reloc_howto_type *from, *to;
1234       const char *name;
1235
1236       from = elf_i386_rtype_to_howto (abfd, from_type);
1237       to = elf_i386_rtype_to_howto (abfd, to_type);
1238
1239       if (h)
1240         name = h->root.root.string;
1241       else
1242         {
1243           struct elf_i386_link_hash_table *htab;
1244
1245           htab = elf_i386_hash_table (info);
1246           if (htab == NULL)
1247             name = "*unknown*";
1248           else
1249             {
1250               Elf_Internal_Sym *isym;
1251
1252               isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1253                                             abfd, r_symndx);
1254               name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1255             }
1256         }
1257
1258       (*_bfd_error_handler)
1259         (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1260            "in section `%A' failed"),
1261          abfd, sec, from->name, to->name, name,
1262          (unsigned long) rel->r_offset);
1263       bfd_set_error (bfd_error_bad_value);
1264       return FALSE;
1265     }
1266
1267   *r_type = to_type;
1268   return TRUE;
1269 }
1270
1271 /* Look through the relocs for a section during the first phase, and
1272    calculate needed space in the global offset table, procedure linkage
1273    table, and dynamic reloc sections.  */
1274
1275 static bfd_boolean
1276 elf_i386_check_relocs (bfd *abfd,
1277                        struct bfd_link_info *info,
1278                        asection *sec,
1279                        const Elf_Internal_Rela *relocs)
1280 {
1281   struct elf_i386_link_hash_table *htab;
1282   Elf_Internal_Shdr *symtab_hdr;
1283   struct elf_link_hash_entry **sym_hashes;
1284   const Elf_Internal_Rela *rel;
1285   const Elf_Internal_Rela *rel_end;
1286   asection *sreloc;
1287
1288   if (info->relocatable)
1289     return TRUE;
1290
1291   BFD_ASSERT (is_i386_elf (abfd));
1292
1293   htab = elf_i386_hash_table (info);
1294   if (htab == NULL)
1295     return FALSE;
1296
1297   symtab_hdr = &elf_symtab_hdr (abfd);
1298   sym_hashes = elf_sym_hashes (abfd);
1299
1300   sreloc = NULL;
1301
1302   rel_end = relocs + sec->reloc_count;
1303   for (rel = relocs; rel < rel_end; rel++)
1304     {
1305       unsigned int r_type;
1306       unsigned long r_symndx;
1307       struct elf_link_hash_entry *h;
1308       Elf_Internal_Sym *isym;
1309       const char *name;
1310
1311       r_symndx = ELF32_R_SYM (rel->r_info);
1312       r_type = ELF32_R_TYPE (rel->r_info);
1313
1314       if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1315         {
1316           (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1317                                  abfd,
1318                                  r_symndx);
1319           return FALSE;
1320         }
1321
1322       if (r_symndx < symtab_hdr->sh_info)
1323         {
1324           /* A local symbol.  */
1325           isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1326                                         abfd, r_symndx);
1327           if (isym == NULL)
1328             return FALSE;
1329
1330           /* Check relocation against local STT_GNU_IFUNC symbol.  */
1331           if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1332             {
1333               h = elf_i386_get_local_sym_hash (htab, abfd, rel,
1334                                                    TRUE);
1335               if (h == NULL)
1336                 return FALSE;
1337
1338               /* Fake a STT_GNU_IFUNC symbol.  */
1339               h->type = STT_GNU_IFUNC;
1340               h->def_regular = 1;
1341               h->ref_regular = 1;
1342               h->forced_local = 1;
1343               h->root.type = bfd_link_hash_defined;
1344             }
1345           else
1346             h = NULL;
1347         }
1348       else
1349         {
1350           isym = NULL;
1351           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1352           while (h->root.type == bfd_link_hash_indirect
1353                  || h->root.type == bfd_link_hash_warning)
1354             h = (struct elf_link_hash_entry *) h->root.u.i.link;
1355         }
1356
1357       if (h != NULL)
1358         {
1359           /* Create the ifunc sections for static executables.  If we
1360              never see an indirect function symbol nor we are building
1361              a static executable, those sections will be empty and
1362              won't appear in output.  */
1363           switch (r_type)
1364             {
1365             default:
1366               break;
1367
1368             case R_386_32:
1369             case R_386_PC32:
1370             case R_386_PLT32:
1371             case R_386_GOT32:
1372             case R_386_GOTOFF:
1373               if (!_bfd_elf_create_ifunc_sections (abfd, info))
1374                 return FALSE;
1375               break;
1376             }
1377
1378           /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
1379              it here if it is defined in a non-shared object.  */
1380           if (h->type == STT_GNU_IFUNC
1381               && h->def_regular)
1382             {
1383               /* It is referenced by a non-shared object. */
1384               h->ref_regular = 1;
1385               h->needs_plt = 1;
1386
1387               /* STT_GNU_IFUNC symbol must go through PLT.  */
1388               h->plt.refcount += 1;
1389
1390               /* STT_GNU_IFUNC needs dynamic sections.  */
1391               if (htab->elf.dynobj == NULL)
1392                 htab->elf.dynobj = abfd;
1393
1394               switch (r_type)
1395                 {
1396                 default:
1397                   if (h->root.root.string)
1398                     name = h->root.root.string;
1399                   else
1400                     name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1401                                              NULL);
1402                   (*_bfd_error_handler)
1403                     (_("%B: relocation %s against STT_GNU_IFUNC "
1404                        "symbol `%s' isn't handled by %s"), abfd,
1405                      elf_howto_table[r_type].name,
1406                      name, __FUNCTION__);
1407                   bfd_set_error (bfd_error_bad_value);
1408                   return FALSE;
1409
1410                 case R_386_32:
1411                   h->non_got_ref = 1;
1412                   h->pointer_equality_needed = 1;
1413                   if (info->shared)
1414                     {
1415                       /* We must copy these reloc types into the
1416                          output file.  Create a reloc section in
1417                          dynobj and make room for this reloc.  */
1418                       sreloc = _bfd_elf_create_ifunc_dyn_reloc
1419                         (abfd, info, sec, sreloc,
1420                          &((struct elf_i386_link_hash_entry *) h)->dyn_relocs);
1421                       if (sreloc == NULL)
1422                         return FALSE;
1423                     }
1424                   break;
1425
1426                 case R_386_PC32:
1427                   h->non_got_ref = 1;
1428                   break;
1429
1430                 case R_386_PLT32:
1431                   break;
1432
1433                 case R_386_GOT32:
1434                 case R_386_GOTOFF:
1435                   h->got.refcount += 1;
1436                   if (htab->elf.sgot == NULL
1437                       && !_bfd_elf_create_got_section (htab->elf.dynobj,
1438                                                        info))
1439                     return FALSE;
1440                   break;
1441                 }
1442
1443               continue;
1444             }
1445         }
1446
1447       if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1448                                      symtab_hdr, sym_hashes,
1449                                      &r_type, GOT_UNKNOWN,
1450                                      rel, rel_end, h, r_symndx))
1451         return FALSE;
1452
1453       switch (r_type)
1454         {
1455         case R_386_TLS_LDM:
1456           htab->tls_ldm_got.refcount += 1;
1457           goto create_got;
1458
1459         case R_386_PLT32:
1460           /* This symbol requires a procedure linkage table entry.  We
1461              actually build the entry in adjust_dynamic_symbol,
1462              because this might be a case of linking PIC code which is
1463              never referenced by a dynamic object, in which case we
1464              don't need to generate a procedure linkage table entry
1465              after all.  */
1466
1467           /* If this is a local symbol, we resolve it directly without
1468              creating a procedure linkage table entry.  */
1469           if (h == NULL)
1470             continue;
1471
1472           h->needs_plt = 1;
1473           h->plt.refcount += 1;
1474           break;
1475
1476         case R_386_TLS_IE_32:
1477         case R_386_TLS_IE:
1478         case R_386_TLS_GOTIE:
1479           if (!info->executable)
1480             info->flags |= DF_STATIC_TLS;
1481           /* Fall through */
1482
1483         case R_386_GOT32:
1484         case R_386_TLS_GD:
1485         case R_386_TLS_GOTDESC:
1486         case R_386_TLS_DESC_CALL:
1487           /* This symbol requires a global offset table entry.  */
1488           {
1489             int tls_type, old_tls_type;
1490
1491             switch (r_type)
1492               {
1493               default:
1494               case R_386_GOT32: tls_type = GOT_NORMAL; break;
1495               case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
1496               case R_386_TLS_GOTDESC:
1497               case R_386_TLS_DESC_CALL:
1498                 tls_type = GOT_TLS_GDESC; break;
1499               case R_386_TLS_IE_32:
1500                 if (ELF32_R_TYPE (rel->r_info) == r_type)
1501                   tls_type = GOT_TLS_IE_NEG;
1502                 else
1503                   /* If this is a GD->IE transition, we may use either of
1504                      R_386_TLS_TPOFF and R_386_TLS_TPOFF32.  */
1505                   tls_type = GOT_TLS_IE;
1506                 break;
1507               case R_386_TLS_IE:
1508               case R_386_TLS_GOTIE:
1509                 tls_type = GOT_TLS_IE_POS; break;
1510               }
1511
1512             if (h != NULL)
1513               {
1514                 h->got.refcount += 1;
1515                 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1516               }
1517             else
1518               {
1519                 bfd_signed_vma *local_got_refcounts;
1520
1521                 /* This is a global offset table entry for a local symbol.  */
1522                 local_got_refcounts = elf_local_got_refcounts (abfd);
1523                 if (local_got_refcounts == NULL)
1524                   {
1525                     bfd_size_type size;
1526
1527                     size = symtab_hdr->sh_info;
1528                     size *= (sizeof (bfd_signed_vma)
1529                              + sizeof (bfd_vma) + sizeof(char));
1530                     local_got_refcounts = (bfd_signed_vma *)
1531                         bfd_zalloc (abfd, size);
1532                     if (local_got_refcounts == NULL)
1533                       return FALSE;
1534                     elf_local_got_refcounts (abfd) = local_got_refcounts;
1535                     elf_i386_local_tlsdesc_gotent (abfd)
1536                       = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
1537                     elf_i386_local_got_tls_type (abfd)
1538                       = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
1539                   }
1540                 local_got_refcounts[r_symndx] += 1;
1541                 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1542               }
1543
1544             if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1545               tls_type |= old_tls_type;
1546             /* If a TLS symbol is accessed using IE at least once,
1547                there is no point to use dynamic model for it.  */
1548             else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1549                      && (! GOT_TLS_GD_ANY_P (old_tls_type)
1550                          || (tls_type & GOT_TLS_IE) == 0))
1551               {
1552                 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
1553                   tls_type = old_tls_type;
1554                 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1555                          && GOT_TLS_GD_ANY_P (tls_type))
1556                   tls_type |= old_tls_type;
1557                 else
1558                   {
1559                     if (h)
1560                       name = h->root.root.string;
1561                     else
1562                       name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1563                                              NULL);
1564                     (*_bfd_error_handler)
1565                       (_("%B: `%s' accessed both as normal and "
1566                          "thread local symbol"),
1567                        abfd, name);
1568                     return FALSE;
1569                   }
1570               }
1571
1572             if (old_tls_type != tls_type)
1573               {
1574                 if (h != NULL)
1575                   elf_i386_hash_entry (h)->tls_type = tls_type;
1576                 else
1577                   elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1578               }
1579           }
1580           /* Fall through */
1581
1582         case R_386_GOTOFF:
1583         case R_386_GOTPC:
1584         create_got:
1585           if (htab->elf.sgot == NULL)
1586             {
1587               if (htab->elf.dynobj == NULL)
1588                 htab->elf.dynobj = abfd;
1589               if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
1590                 return FALSE;
1591             }
1592           if (r_type != R_386_TLS_IE)
1593             break;
1594           /* Fall through */
1595
1596         case R_386_TLS_LE_32:
1597         case R_386_TLS_LE:
1598           if (info->executable)
1599             break;
1600           info->flags |= DF_STATIC_TLS;
1601           /* Fall through */
1602
1603         case R_386_32:
1604         case R_386_PC32:
1605           if (h != NULL && info->executable)
1606             {
1607               /* If this reloc is in a read-only section, we might
1608                  need a copy reloc.  We can't check reliably at this
1609                  stage whether the section is read-only, as input
1610                  sections have not yet been mapped to output sections.
1611                  Tentatively set the flag for now, and correct in
1612                  adjust_dynamic_symbol.  */
1613               h->non_got_ref = 1;
1614
1615               /* We may need a .plt entry if the function this reloc
1616                  refers to is in a shared lib.  */
1617               h->plt.refcount += 1;
1618               if (r_type != R_386_PC32)
1619                 h->pointer_equality_needed = 1;
1620             }
1621
1622           /* If we are creating a shared library, and this is a reloc
1623              against a global symbol, or a non PC relative reloc
1624              against a local symbol, then we need to copy the reloc
1625              into the shared library.  However, if we are linking with
1626              -Bsymbolic, we do not need to copy a reloc against a
1627              global symbol which is defined in an object we are
1628              including in the link (i.e., DEF_REGULAR is set).  At
1629              this point we have not seen all the input files, so it is
1630              possible that DEF_REGULAR is not set now but will be set
1631              later (it is never cleared).  In case of a weak definition,
1632              DEF_REGULAR may be cleared later by a strong definition in
1633              a shared library.  We account for that possibility below by
1634              storing information in the relocs_copied field of the hash
1635              table entry.  A similar situation occurs when creating
1636              shared libraries and symbol visibility changes render the
1637              symbol local.
1638
1639              If on the other hand, we are creating an executable, we
1640              may need to keep relocations for symbols satisfied by a
1641              dynamic library if we manage to avoid copy relocs for the
1642              symbol.  */
1643           if ((info->shared
1644                && (sec->flags & SEC_ALLOC) != 0
1645                && (r_type != R_386_PC32
1646                    || (h != NULL
1647                        && (! SYMBOLIC_BIND (info, h)
1648                            || h->root.type == bfd_link_hash_defweak
1649                            || !h->def_regular))))
1650               || (ELIMINATE_COPY_RELOCS
1651                   && !info->shared
1652                   && (sec->flags & SEC_ALLOC) != 0
1653                   && h != NULL
1654                   && (h->root.type == bfd_link_hash_defweak
1655                       || !h->def_regular)))
1656             {
1657               struct elf_dyn_relocs *p;
1658               struct elf_dyn_relocs **head;
1659
1660               /* We must copy these reloc types into the output file.
1661                  Create a reloc section in dynobj and make room for
1662                  this reloc.  */
1663               if (sreloc == NULL)
1664                 {
1665                   if (htab->elf.dynobj == NULL)
1666                     htab->elf.dynobj = abfd;
1667
1668                   sreloc = _bfd_elf_make_dynamic_reloc_section
1669                     (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1670
1671                   if (sreloc == NULL)
1672                     return FALSE;
1673                 }
1674
1675               /* If this is a global symbol, we count the number of
1676                  relocations we need for this symbol.  */
1677               if (h != NULL)
1678                 {
1679                   head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
1680                 }
1681               else
1682                 {
1683                   /* Track dynamic relocs needed for local syms too.
1684                      We really need local syms available to do this
1685                      easily.  Oh well.  */
1686                   void **vpp;
1687                   asection *s;
1688
1689                   isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1690                                                 abfd, r_symndx);
1691                   if (isym == NULL)
1692                     return FALSE;
1693
1694                   s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1695                   if (s == NULL)
1696                     s = sec;
1697
1698                   vpp = &elf_section_data (s)->local_dynrel;
1699                   head = (struct elf_dyn_relocs **)vpp;
1700                 }
1701
1702               p = *head;
1703               if (p == NULL || p->sec != sec)
1704                 {
1705                   bfd_size_type amt = sizeof *p;
1706                   p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1707                                                            amt);
1708                   if (p == NULL)
1709                     return FALSE;
1710                   p->next = *head;
1711                   *head = p;
1712                   p->sec = sec;
1713                   p->count = 0;
1714                   p->pc_count = 0;
1715                 }
1716
1717               p->count += 1;
1718               if (r_type == R_386_PC32)
1719                 p->pc_count += 1;
1720             }
1721           break;
1722
1723           /* This relocation describes the C++ object vtable hierarchy.
1724              Reconstruct it for later use during GC.  */
1725         case R_386_GNU_VTINHERIT:
1726           if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1727             return FALSE;
1728           break;
1729
1730           /* This relocation describes which C++ vtable entries are actually
1731              used.  Record for later use during GC.  */
1732         case R_386_GNU_VTENTRY:
1733           BFD_ASSERT (h != NULL);
1734           if (h != NULL
1735               && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
1736             return FALSE;
1737           break;
1738
1739         default:
1740           break;
1741         }
1742     }
1743
1744   return TRUE;
1745 }
1746
1747 /* Return the section that should be marked against GC for a given
1748    relocation.  */
1749
1750 static asection *
1751 elf_i386_gc_mark_hook (asection *sec,
1752                        struct bfd_link_info *info,
1753                        Elf_Internal_Rela *rel,
1754                        struct elf_link_hash_entry *h,
1755                        Elf_Internal_Sym *sym)
1756 {
1757   if (h != NULL)
1758     switch (ELF32_R_TYPE (rel->r_info))
1759       {
1760       case R_386_GNU_VTINHERIT:
1761       case R_386_GNU_VTENTRY:
1762         return NULL;
1763       }
1764
1765   return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1766 }
1767
1768 /* Update the got entry reference counts for the section being removed.  */
1769
1770 static bfd_boolean
1771 elf_i386_gc_sweep_hook (bfd *abfd,
1772                         struct bfd_link_info *info,
1773                         asection *sec,
1774                         const Elf_Internal_Rela *relocs)
1775 {
1776   struct elf_i386_link_hash_table *htab;
1777   Elf_Internal_Shdr *symtab_hdr;
1778   struct elf_link_hash_entry **sym_hashes;
1779   bfd_signed_vma *local_got_refcounts;
1780   const Elf_Internal_Rela *rel, *relend;
1781
1782   if (info->relocatable)
1783     return TRUE;
1784
1785   htab = elf_i386_hash_table (info);
1786   if (htab == NULL)
1787     return FALSE;
1788
1789   elf_section_data (sec)->local_dynrel = NULL;
1790
1791   symtab_hdr = &elf_symtab_hdr (abfd);
1792   sym_hashes = elf_sym_hashes (abfd);
1793   local_got_refcounts = elf_local_got_refcounts (abfd);
1794
1795   relend = relocs + sec->reloc_count;
1796   for (rel = relocs; rel < relend; rel++)
1797     {
1798       unsigned long r_symndx;
1799       unsigned int r_type;
1800       struct elf_link_hash_entry *h = NULL;
1801
1802       r_symndx = ELF32_R_SYM (rel->r_info);
1803       if (r_symndx >= symtab_hdr->sh_info)
1804         {
1805           struct elf_i386_link_hash_entry *eh;
1806           struct elf_dyn_relocs **pp;
1807           struct elf_dyn_relocs *p;
1808
1809           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1810           while (h->root.type == bfd_link_hash_indirect
1811                  || h->root.type == bfd_link_hash_warning)
1812             h = (struct elf_link_hash_entry *) h->root.u.i.link;
1813           eh = (struct elf_i386_link_hash_entry *) h;
1814
1815           for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1816             if (p->sec == sec)
1817               {
1818                 /* Everything must go for SEC.  */
1819                 *pp = p->next;
1820                 break;
1821               }
1822         }
1823
1824       r_type = ELF32_R_TYPE (rel->r_info);
1825       if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1826                                      symtab_hdr, sym_hashes,
1827                                      &r_type, GOT_UNKNOWN,
1828                                      rel, relend, h, r_symndx))
1829         return FALSE;
1830
1831       switch (r_type)
1832         {
1833         case R_386_TLS_LDM:
1834           if (htab->tls_ldm_got.refcount > 0)
1835             htab->tls_ldm_got.refcount -= 1;
1836           break;
1837
1838         case R_386_TLS_GD:
1839         case R_386_TLS_GOTDESC:
1840         case R_386_TLS_DESC_CALL:
1841         case R_386_TLS_IE_32:
1842         case R_386_TLS_IE:
1843         case R_386_TLS_GOTIE:
1844         case R_386_GOT32:
1845           if (h != NULL)
1846             {
1847               if (h->got.refcount > 0)
1848                 h->got.refcount -= 1;
1849             }
1850           else if (local_got_refcounts != NULL)
1851             {
1852               if (local_got_refcounts[r_symndx] > 0)
1853                 local_got_refcounts[r_symndx] -= 1;
1854             }
1855           break;
1856
1857         case R_386_32:
1858         case R_386_PC32:
1859           if (info->shared)
1860             break;
1861           /* Fall through */
1862
1863         case R_386_PLT32:
1864           if (h != NULL)
1865             {
1866               if (h->plt.refcount > 0)
1867                 h->plt.refcount -= 1;
1868             }
1869           break;
1870
1871         default:
1872           break;
1873         }
1874     }
1875
1876   return TRUE;
1877 }
1878
1879 /* Adjust a symbol defined by a dynamic object and referenced by a
1880    regular object.  The current definition is in some section of the
1881    dynamic object, but we're not including those sections.  We have to
1882    change the definition to something the rest of the link can
1883    understand.  */
1884
1885 static bfd_boolean
1886 elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
1887                                 struct elf_link_hash_entry *h)
1888 {
1889   struct elf_i386_link_hash_table *htab;
1890   asection *s;
1891
1892   /* STT_GNU_IFUNC symbol must go through PLT. */
1893   if (h->type == STT_GNU_IFUNC)
1894     {
1895       if (h->plt.refcount <= 0)
1896         {
1897           h->plt.offset = (bfd_vma) -1;
1898           h->needs_plt = 0;
1899         }
1900       return TRUE;
1901     }
1902
1903   /* If this is a function, put it in the procedure linkage table.  We
1904      will fill in the contents of the procedure linkage table later,
1905      when we know the address of the .got section.  */
1906   if (h->type == STT_FUNC
1907       || h->needs_plt)
1908     {
1909       if (h->plt.refcount <= 0
1910           || SYMBOL_CALLS_LOCAL (info, h)
1911           || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1912               && h->root.type == bfd_link_hash_undefweak))
1913         {
1914           /* This case can occur if we saw a PLT32 reloc in an input
1915              file, but the symbol was never referred to by a dynamic
1916              object, or if all references were garbage collected.  In
1917              such a case, we don't actually need to build a procedure
1918              linkage table, and we can just do a PC32 reloc instead.  */
1919           h->plt.offset = (bfd_vma) -1;
1920           h->needs_plt = 0;
1921         }
1922
1923       return TRUE;
1924     }
1925   else
1926     /* It's possible that we incorrectly decided a .plt reloc was
1927        needed for an R_386_PC32 reloc to a non-function sym in
1928        check_relocs.  We can't decide accurately between function and
1929        non-function syms in check-relocs;  Objects loaded later in
1930        the link may change h->type.  So fix it now.  */
1931     h->plt.offset = (bfd_vma) -1;
1932
1933   /* If this is a weak symbol, and there is a real definition, the
1934      processor independent code will have arranged for us to see the
1935      real definition first, and we can just use the same value.  */
1936   if (h->u.weakdef != NULL)
1937     {
1938       BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1939                   || h->u.weakdef->root.type == bfd_link_hash_defweak);
1940       h->root.u.def.section = h->u.weakdef->root.u.def.section;
1941       h->root.u.def.value = h->u.weakdef->root.u.def.value;
1942       if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1943         h->non_got_ref = h->u.weakdef->non_got_ref;
1944       return TRUE;
1945     }
1946
1947   /* This is a reference to a symbol defined by a dynamic object which
1948      is not a function.  */
1949
1950   /* If we are creating a shared library, we must presume that the
1951      only references to the symbol are via the global offset table.
1952      For such cases we need not do anything here; the relocations will
1953      be handled correctly by relocate_section.  */
1954   if (info->shared)
1955     return TRUE;
1956
1957   /* If there are no references to this symbol that do not use the
1958      GOT, we don't need to generate a copy reloc.  */
1959   if (!h->non_got_ref)
1960     return TRUE;
1961
1962   /* If -z nocopyreloc was given, we won't generate them either.  */
1963   if (info->nocopyreloc)
1964     {
1965       h->non_got_ref = 0;
1966       return TRUE;
1967     }
1968
1969   htab = elf_i386_hash_table (info);
1970   if (htab == NULL)
1971     return FALSE;
1972
1973   /* If there aren't any dynamic relocs in read-only sections, then
1974      we can keep the dynamic relocs and avoid the copy reloc.  This
1975      doesn't work on VxWorks, where we can not have dynamic relocations
1976      (other than copy and jump slot relocations) in an executable.  */
1977   if (ELIMINATE_COPY_RELOCS && !htab->is_vxworks)
1978     {
1979       struct elf_i386_link_hash_entry * eh;
1980       struct elf_dyn_relocs *p;
1981
1982       eh = (struct elf_i386_link_hash_entry *) h;
1983       for (p = eh->dyn_relocs; p != NULL; p = p->next)
1984         {
1985           s = p->sec->output_section;
1986           if (s != NULL && (s->flags & SEC_READONLY) != 0)
1987             break;
1988         }
1989
1990       if (p == NULL)
1991         {
1992           h->non_got_ref = 0;
1993           return TRUE;
1994         }
1995     }
1996
1997   if (h->size == 0)
1998     {
1999       (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2000                              h->root.root.string);
2001       return TRUE;
2002     }
2003
2004   /* We must allocate the symbol in our .dynbss section, which will
2005      become part of the .bss section of the executable.  There will be
2006      an entry for this symbol in the .dynsym section.  The dynamic
2007      object will contain position independent code, so all references
2008      from the dynamic object to this symbol will go through the global
2009      offset table.  The dynamic linker will use the .dynsym entry to
2010      determine the address it must put in the global offset table, so
2011      both the dynamic object and the regular object will refer to the
2012      same memory location for the variable.  */
2013
2014   /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2015      copy the initial value out of the dynamic object and into the
2016      runtime process image.  */
2017   if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2018     {
2019       htab->srelbss->size += sizeof (Elf32_External_Rel);
2020       h->needs_copy = 1;
2021     }
2022
2023   s = htab->sdynbss;
2024
2025   return _bfd_elf_adjust_dynamic_copy (h, s);
2026 }
2027
2028 /* Allocate space in .plt, .got and associated reloc sections for
2029    dynamic relocs.  */
2030
2031 static bfd_boolean
2032 elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2033 {
2034   struct bfd_link_info *info;
2035   struct elf_i386_link_hash_table *htab;
2036   struct elf_i386_link_hash_entry *eh;
2037   struct elf_dyn_relocs *p;
2038
2039   if (h->root.type == bfd_link_hash_indirect)
2040     return TRUE;
2041
2042   if (h->root.type == bfd_link_hash_warning)
2043     /* When warning symbols are created, they **replace** the "real"
2044        entry in the hash table, thus we never get to see the real
2045        symbol in a hash traversal.  So look at it now.  */
2046     h = (struct elf_link_hash_entry *) h->root.u.i.link;
2047   eh = (struct elf_i386_link_hash_entry *) h;
2048
2049   info = (struct bfd_link_info *) inf;
2050   htab = elf_i386_hash_table (info);
2051   if (htab == NULL)
2052     return FALSE;
2053
2054   /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2055      here if it is defined and referenced in a non-shared object.  */
2056   if (h->type == STT_GNU_IFUNC
2057       && h->def_regular)
2058     return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
2059                                                &eh->dyn_relocs,
2060                                                PLT_ENTRY_SIZE, 4);
2061   else if (htab->elf.dynamic_sections_created
2062            && h->plt.refcount > 0)
2063     {
2064       /* Make sure this symbol is output as a dynamic symbol.
2065          Undefined weak syms won't yet be marked as dynamic.  */
2066       if (h->dynindx == -1
2067           && !h->forced_local)
2068         {
2069           if (! bfd_elf_link_record_dynamic_symbol (info, h))
2070             return FALSE;
2071         }
2072
2073       if (info->shared
2074           || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2075         {
2076           asection *s = htab->elf.splt;
2077
2078           /* If this is the first .plt entry, make room for the special
2079              first entry.  */
2080           if (s->size == 0)
2081             s->size += PLT_ENTRY_SIZE;
2082
2083           h->plt.offset = s->size;
2084
2085           /* If this symbol is not defined in a regular file, and we are
2086              not generating a shared library, then set the symbol to this
2087              location in the .plt.  This is required to make function
2088              pointers compare as equal between the normal executable and
2089              the shared library.  */
2090           if (! info->shared
2091               && !h->def_regular)
2092             {
2093               h->root.u.def.section = s;
2094               h->root.u.def.value = h->plt.offset;
2095             }
2096
2097           /* Make room for this entry.  */
2098           s->size += PLT_ENTRY_SIZE;
2099
2100           /* We also need to make an entry in the .got.plt section, which
2101              will be placed in the .got section by the linker script.  */
2102           htab->elf.sgotplt->size += 4;
2103
2104           /* We also need to make an entry in the .rel.plt section.  */
2105           htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2106           htab->next_tls_desc_index++;
2107
2108           if (htab->is_vxworks && !info->shared)
2109             {
2110               /* VxWorks has a second set of relocations for each PLT entry
2111                  in executables.  They go in a separate relocation section,
2112                  which is processed by the kernel loader.  */
2113
2114               /* There are two relocations for the initial PLT entry: an
2115                  R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2116                  R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8.  */
2117
2118               if (h->plt.offset == PLT_ENTRY_SIZE)
2119                 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2120
2121               /* There are two extra relocations for each subsequent PLT entry:
2122                  an R_386_32 relocation for the GOT entry, and an R_386_32
2123                  relocation for the PLT entry.  */
2124
2125               htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2126             }
2127         }
2128       else
2129         {
2130           h->plt.offset = (bfd_vma) -1;
2131           h->needs_plt = 0;
2132         }
2133     }
2134   else
2135     {
2136       h->plt.offset = (bfd_vma) -1;
2137       h->needs_plt = 0;
2138     }
2139
2140   eh->tlsdesc_got = (bfd_vma) -1;
2141
2142   /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
2143      make it a R_386_TLS_LE_32 requiring no TLS entry.  */
2144   if (h->got.refcount > 0
2145       && info->executable
2146       && h->dynindx == -1
2147       && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
2148     h->got.offset = (bfd_vma) -1;
2149   else if (h->got.refcount > 0)
2150     {
2151       asection *s;
2152       bfd_boolean dyn;
2153       int tls_type = elf_i386_hash_entry(h)->tls_type;
2154
2155       /* Make sure this symbol is output as a dynamic symbol.
2156          Undefined weak syms won't yet be marked as dynamic.  */
2157       if (h->dynindx == -1
2158           && !h->forced_local)
2159         {
2160           if (! bfd_elf_link_record_dynamic_symbol (info, h))
2161             return FALSE;
2162         }
2163
2164       s = htab->elf.sgot;
2165       if (GOT_TLS_GDESC_P (tls_type))
2166         {
2167           eh->tlsdesc_got = htab->elf.sgotplt->size
2168             - elf_i386_compute_jump_table_size (htab);
2169           htab->elf.sgotplt->size += 8;
2170           h->got.offset = (bfd_vma) -2;
2171         }
2172       if (! GOT_TLS_GDESC_P (tls_type)
2173           || GOT_TLS_GD_P (tls_type))
2174         {
2175           h->got.offset = s->size;
2176           s->size += 4;
2177           /* R_386_TLS_GD needs 2 consecutive GOT slots.  */
2178           if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2179             s->size += 4;
2180         }
2181       dyn = htab->elf.dynamic_sections_created;
2182       /* R_386_TLS_IE_32 needs one dynamic relocation,
2183          R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2184          (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2185          need two), R_386_TLS_GD needs one if local symbol and two if
2186          global.  */
2187       if (tls_type == GOT_TLS_IE_BOTH)
2188         htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
2189       else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
2190                || (tls_type & GOT_TLS_IE))
2191         htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
2192       else if (GOT_TLS_GD_P (tls_type))
2193         htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
2194       else if (! GOT_TLS_GDESC_P (tls_type)
2195                && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2196                    || h->root.type != bfd_link_hash_undefweak)
2197                && (info->shared
2198                    || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2199         htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
2200       if (GOT_TLS_GDESC_P (tls_type))
2201         htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2202     }
2203   else
2204     h->got.offset = (bfd_vma) -1;
2205
2206   if (eh->dyn_relocs == NULL)
2207     return TRUE;
2208
2209   /* In the shared -Bsymbolic case, discard space allocated for
2210      dynamic pc-relative relocs against symbols which turn out to be
2211      defined in regular objects.  For the normal shared case, discard
2212      space for pc-relative relocs that have become local due to symbol
2213      visibility changes.  */
2214
2215   if (info->shared)
2216     {
2217       /* The only reloc that uses pc_count is R_386_PC32, which will
2218          appear on a call or on something like ".long foo - .".  We
2219          want calls to protected symbols to resolve directly to the
2220          function rather than going via the plt.  If people want
2221          function pointer comparisons to work as expected then they
2222          should avoid writing assembly like ".long foo - .".  */
2223       if (SYMBOL_CALLS_LOCAL (info, h))
2224         {
2225           struct elf_dyn_relocs **pp;
2226
2227           for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2228             {
2229               p->count -= p->pc_count;
2230               p->pc_count = 0;
2231               if (p->count == 0)
2232                 *pp = p->next;
2233               else
2234                 pp = &p->next;
2235             }
2236         }
2237
2238       if (htab->is_vxworks)
2239         {
2240           struct elf_dyn_relocs **pp;
2241           for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2242             {
2243               if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2244                 *pp = p->next;
2245               else
2246                 pp = &p->next;
2247             }
2248         }
2249
2250       /* Also discard relocs on undefined weak syms with non-default
2251          visibility.  */
2252       if (eh->dyn_relocs != NULL
2253           && h->root.type == bfd_link_hash_undefweak)
2254         {
2255           if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2256             eh->dyn_relocs = NULL;
2257
2258           /* Make sure undefined weak symbols are output as a dynamic
2259              symbol in PIEs.  */
2260           else if (h->dynindx == -1
2261                    && !h->forced_local)
2262             {
2263               if (! bfd_elf_link_record_dynamic_symbol (info, h))
2264                 return FALSE;
2265             }
2266         }
2267     }
2268   else if (ELIMINATE_COPY_RELOCS)
2269     {
2270       /* For the non-shared case, discard space for relocs against
2271          symbols which turn out to need copy relocs or are not
2272          dynamic.  */
2273
2274       if (!h->non_got_ref
2275           && ((h->def_dynamic
2276                && !h->def_regular)
2277               || (htab->elf.dynamic_sections_created
2278                   && (h->root.type == bfd_link_hash_undefweak
2279                       || h->root.type == bfd_link_hash_undefined))))
2280         {
2281           /* Make sure this symbol is output as a dynamic symbol.
2282              Undefined weak syms won't yet be marked as dynamic.  */
2283           if (h->dynindx == -1
2284               && !h->forced_local)
2285             {
2286               if (! bfd_elf_link_record_dynamic_symbol (info, h))
2287                 return FALSE;
2288             }
2289
2290           /* If that succeeded, we know we'll be keeping all the
2291              relocs.  */
2292           if (h->dynindx != -1)
2293             goto keep;
2294         }
2295
2296       eh->dyn_relocs = NULL;
2297
2298     keep: ;
2299     }
2300
2301   /* Finally, allocate space.  */
2302   for (p = eh->dyn_relocs; p != NULL; p = p->next)
2303     {
2304       asection *sreloc;
2305
2306       sreloc = elf_section_data (p->sec)->sreloc;
2307
2308       BFD_ASSERT (sreloc != NULL);
2309       sreloc->size += p->count * sizeof (Elf32_External_Rel);
2310     }
2311
2312   return TRUE;
2313 }
2314
2315 /* Allocate space in .plt, .got and associated reloc sections for
2316    local dynamic relocs.  */
2317
2318 static bfd_boolean
2319 elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2320 {
2321   struct elf_link_hash_entry *h
2322     = (struct elf_link_hash_entry *) *slot;
2323
2324   if (h->type != STT_GNU_IFUNC
2325       || !h->def_regular
2326       || !h->ref_regular
2327       || !h->forced_local
2328       || h->root.type != bfd_link_hash_defined)
2329     abort ();
2330
2331   return elf_i386_allocate_dynrelocs (h, inf);
2332 }
2333
2334 /* Find any dynamic relocs that apply to read-only sections.  */
2335
2336 static bfd_boolean
2337 elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2338 {
2339   struct elf_i386_link_hash_entry *eh;
2340   struct elf_dyn_relocs *p;
2341
2342   if (h->root.type == bfd_link_hash_warning)
2343     h = (struct elf_link_hash_entry *) h->root.u.i.link;
2344
2345   eh = (struct elf_i386_link_hash_entry *) h;
2346   for (p = eh->dyn_relocs; p != NULL; p = p->next)
2347     {
2348       asection *s = p->sec->output_section;
2349
2350       if (s != NULL && (s->flags & SEC_READONLY) != 0)
2351         {
2352           struct bfd_link_info *info = (struct bfd_link_info *) inf;
2353
2354           info->flags |= DF_TEXTREL;
2355
2356           /* Not an error, just cut short the traversal.  */
2357           return FALSE;
2358         }
2359     }
2360   return TRUE;
2361 }
2362
2363 /* Set the sizes of the dynamic sections.  */
2364
2365 static bfd_boolean
2366 elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2367                                 struct bfd_link_info *info)
2368 {
2369   struct elf_i386_link_hash_table *htab;
2370   bfd *dynobj;
2371   asection *s;
2372   bfd_boolean relocs;
2373   bfd *ibfd;
2374
2375   htab = elf_i386_hash_table (info);
2376   if (htab == NULL)
2377     return FALSE;
2378   dynobj = htab->elf.dynobj;
2379   if (dynobj == NULL)
2380     abort ();
2381
2382   if (htab->elf.dynamic_sections_created)
2383     {
2384       /* Set the contents of the .interp section to the interpreter.  */
2385       if (info->executable)
2386         {
2387           s = bfd_get_section_by_name (dynobj, ".interp");
2388           if (s == NULL)
2389             abort ();
2390           s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2391           s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2392         }
2393     }
2394
2395   /* Set up .got offsets for local syms, and space for local dynamic
2396      relocs.  */
2397   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2398     {
2399       bfd_signed_vma *local_got;
2400       bfd_signed_vma *end_local_got;
2401       char *local_tls_type;
2402       bfd_vma *local_tlsdesc_gotent;
2403       bfd_size_type locsymcount;
2404       Elf_Internal_Shdr *symtab_hdr;
2405       asection *srel;
2406
2407       if (! is_i386_elf (ibfd))
2408         continue;
2409
2410       for (s = ibfd->sections; s != NULL; s = s->next)
2411         {
2412           struct elf_dyn_relocs *p;
2413
2414           for (p = ((struct elf_dyn_relocs *)
2415                      elf_section_data (s)->local_dynrel);
2416                p != NULL;
2417                p = p->next)
2418             {
2419               if (!bfd_is_abs_section (p->sec)
2420                   && bfd_is_abs_section (p->sec->output_section))
2421                 {
2422                   /* Input section has been discarded, either because
2423                      it is a copy of a linkonce section or due to
2424                      linker script /DISCARD/, so we'll be discarding
2425                      the relocs too.  */
2426                 }
2427               else if (htab->is_vxworks
2428                        && strcmp (p->sec->output_section->name,
2429                                   ".tls_vars") == 0)
2430                 {
2431                   /* Relocations in vxworks .tls_vars sections are
2432                      handled specially by the loader.  */
2433                 }
2434               else if (p->count != 0)
2435                 {
2436                   srel = elf_section_data (p->sec)->sreloc;
2437                   srel->size += p->count * sizeof (Elf32_External_Rel);
2438                   if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2439                     info->flags |= DF_TEXTREL;
2440                 }
2441             }
2442         }
2443
2444       local_got = elf_local_got_refcounts (ibfd);
2445       if (!local_got)
2446         continue;
2447
2448       symtab_hdr = &elf_symtab_hdr (ibfd);
2449       locsymcount = symtab_hdr->sh_info;
2450       end_local_got = local_got + locsymcount;
2451       local_tls_type = elf_i386_local_got_tls_type (ibfd);
2452       local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
2453       s = htab->elf.sgot;
2454       srel = htab->elf.srelgot;
2455       for (; local_got < end_local_got;
2456            ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
2457         {
2458           *local_tlsdesc_gotent = (bfd_vma) -1;
2459           if (*local_got > 0)
2460             {
2461               if (GOT_TLS_GDESC_P (*local_tls_type))
2462                 {
2463                   *local_tlsdesc_gotent = htab->elf.sgotplt->size
2464                     - elf_i386_compute_jump_table_size (htab);
2465                   htab->elf.sgotplt->size += 8;
2466                   *local_got = (bfd_vma) -2;
2467                 }
2468               if (! GOT_TLS_GDESC_P (*local_tls_type)
2469                   || GOT_TLS_GD_P (*local_tls_type))
2470                 {
2471                   *local_got = s->size;
2472                   s->size += 4;
2473                   if (GOT_TLS_GD_P (*local_tls_type)
2474                       || *local_tls_type == GOT_TLS_IE_BOTH)
2475                     s->size += 4;
2476                 }
2477               if (info->shared
2478                   || GOT_TLS_GD_ANY_P (*local_tls_type)
2479                   || (*local_tls_type & GOT_TLS_IE))
2480                 {
2481                   if (*local_tls_type == GOT_TLS_IE_BOTH)
2482                     srel->size += 2 * sizeof (Elf32_External_Rel);
2483                   else if (GOT_TLS_GD_P (*local_tls_type)
2484                            || ! GOT_TLS_GDESC_P (*local_tls_type))
2485                     srel->size += sizeof (Elf32_External_Rel);
2486                   if (GOT_TLS_GDESC_P (*local_tls_type))
2487                     htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2488                 }
2489             }
2490           else
2491             *local_got = (bfd_vma) -1;
2492         }
2493     }
2494
2495   if (htab->tls_ldm_got.refcount > 0)
2496     {
2497       /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2498          relocs.  */
2499       htab->tls_ldm_got.offset = htab->elf.sgot->size;
2500       htab->elf.sgot->size += 8;
2501       htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
2502     }
2503   else
2504     htab->tls_ldm_got.offset = -1;
2505
2506   /* Allocate global sym .plt and .got entries, and space for global
2507      sym dynamic relocs.  */
2508   elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
2509
2510   /* Allocate .plt and .got entries, and space for local symbols.  */
2511   htab_traverse (htab->loc_hash_table,
2512                  elf_i386_allocate_local_dynrelocs,
2513                  info);
2514
2515   /* For every jump slot reserved in the sgotplt, reloc_count is
2516      incremented.  However, when we reserve space for TLS descriptors,
2517      it's not incremented, so in order to compute the space reserved
2518      for them, it suffices to multiply the reloc count by the jump
2519      slot size.  */
2520   if (htab->elf.srelplt)
2521     htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2522
2523   /* We now have determined the sizes of the various dynamic sections.
2524      Allocate memory for them.  */
2525   relocs = FALSE;
2526   for (s = dynobj->sections; s != NULL; s = s->next)
2527     {
2528       bfd_boolean strip_section = TRUE;
2529
2530       if ((s->flags & SEC_LINKER_CREATED) == 0)
2531         continue;
2532
2533       if (s == htab->elf.splt
2534           || s == htab->elf.sgot
2535           || s == htab->elf.sgotplt
2536           || s == htab->elf.iplt
2537           || s == htab->elf.igotplt
2538           || s == htab->sdynbss)
2539         {
2540           /* Strip this section if we don't need it; see the
2541              comment below.  */
2542           /* We'd like to strip these sections if they aren't needed, but if
2543              we've exported dynamic symbols from them we must leave them.
2544              It's too late to tell BFD to get rid of the symbols.  */
2545
2546           if (htab->elf.hplt != NULL)
2547             strip_section = FALSE;
2548         }
2549       else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
2550         {
2551           if (s->size != 0
2552               && s != htab->elf.srelplt
2553               && s != htab->srelplt2)
2554             relocs = TRUE;
2555
2556           /* We use the reloc_count field as a counter if we need
2557              to copy relocs into the output file.  */
2558           s->reloc_count = 0;
2559         }
2560       else
2561         {
2562           /* It's not one of our sections, so don't allocate space.  */
2563           continue;
2564         }
2565
2566       if (s->size == 0)
2567         {
2568           /* If we don't need this section, strip it from the
2569              output file.  This is mostly to handle .rel.bss and
2570              .rel.plt.  We must create both sections in
2571              create_dynamic_sections, because they must be created
2572              before the linker maps input sections to output
2573              sections.  The linker does that before
2574              adjust_dynamic_symbol is called, and it is that
2575              function which decides whether anything needs to go
2576              into these sections.  */
2577           if (strip_section)
2578             s->flags |= SEC_EXCLUDE;
2579           continue;
2580         }
2581
2582       if ((s->flags & SEC_HAS_CONTENTS) == 0)
2583         continue;
2584
2585       /* Allocate memory for the section contents.  We use bfd_zalloc
2586          here in case unused entries are not reclaimed before the
2587          section's contents are written out.  This should not happen,
2588          but this way if it does, we get a R_386_NONE reloc instead
2589          of garbage.  */
2590       s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
2591       if (s->contents == NULL)
2592         return FALSE;
2593     }
2594
2595   if (htab->elf.dynamic_sections_created)
2596     {
2597       /* Add some entries to the .dynamic section.  We fill in the
2598          values later, in elf_i386_finish_dynamic_sections, but we
2599          must add the entries now so that we get the correct size for
2600          the .dynamic section.  The DT_DEBUG entry is filled in by the
2601          dynamic linker and used by the debugger.  */
2602 #define add_dynamic_entry(TAG, VAL) \
2603   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2604
2605       if (info->executable)
2606         {
2607           if (!add_dynamic_entry (DT_DEBUG, 0))
2608             return FALSE;
2609         }
2610
2611       if (htab->elf.splt->size != 0)
2612         {
2613           if (!add_dynamic_entry (DT_PLTGOT, 0)
2614               || !add_dynamic_entry (DT_PLTRELSZ, 0)
2615               || !add_dynamic_entry (DT_PLTREL, DT_REL)
2616               || !add_dynamic_entry (DT_JMPREL, 0))
2617             return FALSE;
2618         }
2619
2620       if (relocs)
2621         {
2622           if (!add_dynamic_entry (DT_REL, 0)
2623               || !add_dynamic_entry (DT_RELSZ, 0)
2624               || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
2625             return FALSE;
2626
2627           /* If any dynamic relocs apply to a read-only section,
2628              then we need a DT_TEXTREL entry.  */
2629           if ((info->flags & DF_TEXTREL) == 0)
2630             elf_link_hash_traverse (&htab->elf,
2631                                     elf_i386_readonly_dynrelocs, info);
2632
2633           if ((info->flags & DF_TEXTREL) != 0)
2634             {
2635               if (!add_dynamic_entry (DT_TEXTREL, 0))
2636                 return FALSE;
2637             }
2638         }
2639       if (htab->is_vxworks
2640           && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2641         return FALSE;
2642     }
2643 #undef add_dynamic_entry
2644
2645   return TRUE;
2646 }
2647
2648 static bfd_boolean
2649 elf_i386_always_size_sections (bfd *output_bfd,
2650                                struct bfd_link_info *info)
2651 {
2652   asection *tls_sec = elf_hash_table (info)->tls_sec;
2653
2654   if (tls_sec)
2655     {
2656       struct elf_link_hash_entry *tlsbase;
2657
2658       tlsbase = elf_link_hash_lookup (elf_hash_table (info),
2659                                       "_TLS_MODULE_BASE_",
2660                                       FALSE, FALSE, FALSE);
2661
2662       if (tlsbase && tlsbase->type == STT_TLS)
2663         {
2664           struct elf_i386_link_hash_table *htab;
2665           struct bfd_link_hash_entry *bh = NULL;
2666           const struct elf_backend_data *bed
2667             = get_elf_backend_data (output_bfd);
2668
2669           htab = elf_i386_hash_table (info);
2670           if (htab == NULL)
2671             return FALSE;
2672
2673           if (!(_bfd_generic_link_add_one_symbol
2674                 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
2675                  tls_sec, 0, NULL, FALSE,
2676                  bed->collect, &bh)))
2677             return FALSE;
2678
2679           htab->tls_module_base = bh;
2680
2681           tlsbase = (struct elf_link_hash_entry *)bh;
2682           tlsbase->def_regular = 1;
2683           tlsbase->other = STV_HIDDEN;
2684           (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
2685         }
2686     }
2687
2688   return TRUE;
2689 }
2690
2691 /* Set the correct type for an x86 ELF section.  We do this by the
2692    section name, which is a hack, but ought to work.  */
2693
2694 static bfd_boolean
2695 elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2696                         Elf_Internal_Shdr *hdr,
2697                         asection *sec)
2698 {
2699   const char *name;
2700
2701   name = bfd_get_section_name (abfd, sec);
2702
2703   /* This is an ugly, but unfortunately necessary hack that is
2704      needed when producing EFI binaries on x86. It tells
2705      elf.c:elf_fake_sections() not to consider ".reloc" as a section
2706      containing ELF relocation info.  We need this hack in order to
2707      be able to generate ELF binaries that can be translated into
2708      EFI applications (which are essentially COFF objects).  Those
2709      files contain a COFF ".reloc" section inside an ELFNN object,
2710      which would normally cause BFD to segfault because it would
2711      attempt to interpret this section as containing relocation
2712      entries for section "oc".  With this hack enabled, ".reloc"
2713      will be treated as a normal data section, which will avoid the
2714      segfault.  However, you won't be able to create an ELFNN binary
2715      with a section named "oc" that needs relocations, but that's
2716      the kind of ugly side-effects you get when detecting section
2717      types based on their names...  In practice, this limitation is
2718      unlikely to bite.  */
2719   if (strcmp (name, ".reloc") == 0)
2720     hdr->sh_type = SHT_PROGBITS;
2721
2722   return TRUE;
2723 }
2724
2725 /* _TLS_MODULE_BASE_ needs to be treated especially when linking
2726    executables.  Rather than setting it to the beginning of the TLS
2727    section, we have to set it to the end.    This function may be called
2728    multiple times, it is idempotent.  */
2729
2730 static void
2731 elf_i386_set_tls_module_base (struct bfd_link_info *info)
2732 {
2733   struct elf_i386_link_hash_table *htab;
2734   struct bfd_link_hash_entry *base;
2735
2736   if (!info->executable)
2737     return;
2738
2739   htab = elf_i386_hash_table (info);
2740   if (htab == NULL)
2741     return;
2742
2743   base = htab->tls_module_base;
2744   if (base == NULL)
2745     return;
2746
2747   base->u.def.value = htab->elf.tls_size;
2748 }
2749
2750 /* Return the base VMA address which should be subtracted from real addresses
2751    when resolving @dtpoff relocation.
2752    This is PT_TLS segment p_vaddr.  */
2753
2754 static bfd_vma
2755 elf_i386_dtpoff_base (struct bfd_link_info *info)
2756 {
2757   /* If tls_sec is NULL, we should have signalled an error already.  */
2758   if (elf_hash_table (info)->tls_sec == NULL)
2759     return 0;
2760   return elf_hash_table (info)->tls_sec->vma;
2761 }
2762
2763 /* Return the relocation value for @tpoff relocation
2764    if STT_TLS virtual address is ADDRESS.  */
2765
2766 static bfd_vma
2767 elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
2768 {
2769   struct elf_link_hash_table *htab = elf_hash_table (info);
2770
2771   /* If tls_sec is NULL, we should have signalled an error already.  */
2772   if (htab->tls_sec == NULL)
2773     return 0;
2774   return htab->tls_size + htab->tls_sec->vma - address;
2775 }
2776
2777 /* Relocate an i386 ELF section.  */
2778
2779 static bfd_boolean
2780 elf_i386_relocate_section (bfd *output_bfd,
2781                            struct bfd_link_info *info,
2782                            bfd *input_bfd,
2783                            asection *input_section,
2784                            bfd_byte *contents,
2785                            Elf_Internal_Rela *relocs,
2786                            Elf_Internal_Sym *local_syms,
2787                            asection **local_sections)
2788 {
2789   struct elf_i386_link_hash_table *htab;
2790   Elf_Internal_Shdr *symtab_hdr;
2791   struct elf_link_hash_entry **sym_hashes;
2792   bfd_vma *local_got_offsets;
2793   bfd_vma *local_tlsdesc_gotents;
2794   Elf_Internal_Rela *rel;
2795   Elf_Internal_Rela *relend;
2796   bfd_boolean is_vxworks_tls;
2797
2798   BFD_ASSERT (is_i386_elf (input_bfd));
2799
2800   htab = elf_i386_hash_table (info);
2801   if (htab == NULL)
2802     return FALSE;
2803   symtab_hdr = &elf_symtab_hdr (input_bfd);
2804   sym_hashes = elf_sym_hashes (input_bfd);
2805   local_got_offsets = elf_local_got_offsets (input_bfd);
2806   local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
2807   /* We have to handle relocations in vxworks .tls_vars sections
2808      specially, because the dynamic loader is 'weird'.  */
2809   is_vxworks_tls = (htab->is_vxworks && info->shared
2810                     && !strcmp (input_section->output_section->name,
2811                                 ".tls_vars"));
2812
2813   elf_i386_set_tls_module_base (info);
2814
2815   rel = relocs;
2816   relend = relocs + input_section->reloc_count;
2817   for (; rel < relend; rel++)
2818     {
2819       unsigned int r_type;
2820       reloc_howto_type *howto;
2821       unsigned long r_symndx;
2822       struct elf_link_hash_entry *h;
2823       Elf_Internal_Sym *sym;
2824       asection *sec;
2825       bfd_vma off, offplt;
2826       bfd_vma relocation;
2827       bfd_boolean unresolved_reloc;
2828       bfd_reloc_status_type r;
2829       unsigned int indx;
2830       int tls_type;
2831
2832       r_type = ELF32_R_TYPE (rel->r_info);
2833       if (r_type == R_386_GNU_VTINHERIT
2834           || r_type == R_386_GNU_VTENTRY)
2835         continue;
2836
2837       if ((indx = r_type) >= R_386_standard
2838           && ((indx = r_type - R_386_ext_offset) - R_386_standard
2839               >= R_386_ext - R_386_standard)
2840           && ((indx = r_type - R_386_tls_offset) - R_386_ext
2841               >= R_386_irelative - R_386_ext))
2842         {
2843           (*_bfd_error_handler)
2844             (_("%B: unrecognized relocation (0x%x) in section `%A'"),
2845              input_bfd, input_section, r_type);
2846           bfd_set_error (bfd_error_bad_value);
2847           return FALSE;
2848         }
2849       howto = elf_howto_table + indx;
2850
2851       r_symndx = ELF32_R_SYM (rel->r_info);
2852       h = NULL;
2853       sym = NULL;
2854       sec = NULL;
2855       unresolved_reloc = FALSE;
2856       if (r_symndx < symtab_hdr->sh_info)
2857         {
2858           sym = local_syms + r_symndx;
2859           sec = local_sections[r_symndx];
2860           relocation = (sec->output_section->vma
2861                         + sec->output_offset
2862                         + sym->st_value);
2863
2864           if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
2865               && ((sec->flags & SEC_MERGE) != 0
2866                   || (info->relocatable
2867                       && sec->output_offset != 0)))
2868             {
2869               bfd_vma addend;
2870               bfd_byte *where = contents + rel->r_offset;
2871
2872               switch (howto->size)
2873                 {
2874                 case 0:
2875                   addend = bfd_get_8 (input_bfd, where);
2876                   if (howto->pc_relative)
2877                     {
2878                       addend = (addend ^ 0x80) - 0x80;
2879                       addend += 1;
2880                     }
2881                   break;
2882                 case 1:
2883                   addend = bfd_get_16 (input_bfd, where);
2884                   if (howto->pc_relative)
2885                     {
2886                       addend = (addend ^ 0x8000) - 0x8000;
2887                       addend += 2;
2888                     }
2889                   break;
2890                 case 2:
2891                   addend = bfd_get_32 (input_bfd, where);
2892                   if (howto->pc_relative)
2893                     {
2894                       addend = (addend ^ 0x80000000) - 0x80000000;
2895                       addend += 4;
2896                     }
2897                   break;
2898                 default:
2899                   abort ();
2900                 }
2901
2902               if (info->relocatable)
2903                 addend += sec->output_offset;
2904               else
2905                 {
2906                   asection *msec = sec;
2907                   addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
2908                                                    addend);
2909                   addend -= relocation;
2910                   addend += msec->output_section->vma + msec->output_offset;
2911                 }
2912
2913               switch (howto->size)
2914                 {
2915                 case 0:
2916                   /* FIXME: overflow checks.  */
2917                   if (howto->pc_relative)
2918                     addend -= 1;
2919                   bfd_put_8 (input_bfd, addend, where);
2920                   break;
2921                 case 1:
2922                   if (howto->pc_relative)
2923                     addend -= 2;
2924                   bfd_put_16 (input_bfd, addend, where);
2925                   break;
2926                 case 2:
2927                   if (howto->pc_relative)
2928                     addend -= 4;
2929                   bfd_put_32 (input_bfd, addend, where);
2930                   break;
2931                 }
2932             }
2933           else if (!info->relocatable
2934                    && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2935             {
2936               /* Relocate against local STT_GNU_IFUNC symbol.  */
2937               h = elf_i386_get_local_sym_hash (htab, input_bfd,
2938                                                    rel, FALSE);
2939               if (h == NULL)
2940                 abort ();
2941
2942               /* Set STT_GNU_IFUNC symbol value.  */
2943               h->root.u.def.value = sym->st_value;
2944               h->root.u.def.section = sec;
2945             }
2946         }
2947       else
2948         {
2949           bfd_boolean warned ATTRIBUTE_UNUSED;
2950
2951           RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2952                                    r_symndx, symtab_hdr, sym_hashes,
2953                                    h, sec, relocation,
2954                                    unresolved_reloc, warned);
2955         }
2956
2957       if (sec != NULL && elf_discarded_section (sec))
2958         RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
2959                                          rel, relend, howto, contents);
2960
2961       if (info->relocatable)
2962         continue;
2963
2964       /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
2965          it here if it is defined in a non-shared object.  */
2966       if (h != NULL
2967           && h->type == STT_GNU_IFUNC
2968           && h->def_regular)
2969         {
2970           asection *plt, *gotplt, *base_got;
2971           bfd_vma plt_index;
2972           const char *name;
2973
2974           if ((input_section->flags & SEC_ALLOC) == 0
2975               || h->plt.offset == (bfd_vma) -1)
2976             abort ();
2977
2978           /* STT_GNU_IFUNC symbol must go through PLT.  */
2979           if (htab->elf.splt != NULL)
2980             {
2981               plt = htab->elf.splt;
2982               gotplt = htab->elf.sgotplt;
2983             }
2984           else
2985             {
2986               plt = htab->elf.iplt;
2987               gotplt = htab->elf.igotplt;
2988             }
2989
2990           relocation = (plt->output_section->vma
2991                         + plt->output_offset + h->plt.offset);
2992
2993           switch (r_type)
2994             {
2995             default:
2996               if (h->root.root.string)
2997                 name = h->root.root.string;
2998               else
2999                 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3000                                          NULL);
3001               (*_bfd_error_handler)
3002                 (_("%B: relocation %s against STT_GNU_IFUNC "
3003                    "symbol `%s' isn't handled by %s"), input_bfd,
3004                  elf_howto_table[r_type].name,
3005                  name, __FUNCTION__);
3006               bfd_set_error (bfd_error_bad_value);
3007               return FALSE;
3008
3009             case R_386_32:
3010               /* Generate dynamic relcoation only when there is a
3011                  non-GOF reference in a shared object.  */
3012               if (info->shared && h->non_got_ref)
3013                 {
3014                   Elf_Internal_Rela outrel;
3015                   bfd_byte *loc;
3016                   asection *sreloc;
3017                   bfd_vma offset;
3018
3019                   /* Need a dynamic relocation to get the real function
3020                      adddress.  */
3021                   offset = _bfd_elf_section_offset (output_bfd,
3022                                                     info,
3023                                                     input_section,
3024                                                     rel->r_offset);
3025                   if (offset == (bfd_vma) -1
3026                       || offset == (bfd_vma) -2)
3027                     abort ();
3028
3029                   outrel.r_offset = (input_section->output_section->vma
3030                                      + input_section->output_offset
3031                                      + offset);
3032
3033                   if (h->dynindx == -1
3034                       || h->forced_local
3035                       || info->executable)
3036                     {
3037                       /* This symbol is resolved locally.  */
3038                       outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3039                       bfd_put_32 (output_bfd,
3040                                   (h->root.u.def.value
3041                                    + h->root.u.def.section->output_section->vma
3042                                    + h->root.u.def.section->output_offset),
3043                                   contents + offset);
3044                     }
3045                   else
3046                     outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3047
3048                   sreloc = htab->elf.irelifunc;
3049                   loc = sreloc->contents;
3050                   loc += (sreloc->reloc_count++
3051                           * sizeof (Elf32_External_Rel));
3052                   bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3053
3054                   /* If this reloc is against an external symbol, we
3055                      do not want to fiddle with the addend.  Otherwise,
3056                      we need to include the symbol value so that it
3057                      becomes an addend for the dynamic reloc.  For an
3058                      internal symbol, we have updated addend.  */
3059                   continue;
3060                 }
3061
3062             case R_386_PC32:
3063             case R_386_PLT32:
3064               goto do_relocation;
3065
3066             case R_386_GOT32:
3067               base_got = htab->elf.sgot;
3068               off = h->got.offset;
3069
3070               if (base_got == NULL)
3071                 abort ();
3072
3073               if (off == (bfd_vma) -1)
3074                 {
3075                   /* We can't use h->got.offset here to save state, or
3076                      even just remember the offset, as finish_dynamic_symbol
3077                      would use that as offset into .got.  */
3078
3079                   if (htab->elf.splt != NULL)
3080                     {
3081                       plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3082                       off = (plt_index + 3) * 4;
3083                       base_got = htab->elf.sgotplt;
3084                     }
3085                   else
3086                     {
3087                       plt_index = h->plt.offset / PLT_ENTRY_SIZE;
3088                       off = plt_index * 4;
3089                       base_got = htab->elf.igotplt;
3090                     }
3091
3092                   if (h->dynindx == -1
3093                       || h->forced_local
3094                       || info->symbolic)
3095                     {
3096                       /* This references the local defitionion.  We must
3097                          initialize this entry in the global offset table.
3098                          Since the offset must always be a multiple of 8,
3099                          we use the least significant bit to record
3100                          whether we have initialized it already.
3101
3102                          When doing a dynamic link, we create a .rela.got
3103                          relocation entry to initialize the value.  This
3104                          is done in the finish_dynamic_symbol routine.   */
3105                       if ((off & 1) != 0)
3106                         off &= ~1;
3107                       else
3108                         {
3109                           bfd_put_32 (output_bfd, relocation,
3110                                       base_got->contents + off);
3111                           h->got.offset |= 1;
3112                         }
3113                     }
3114
3115                   relocation = off;
3116
3117                   /* Adjust for static executables.  */
3118                   if (htab->elf.splt == NULL)
3119                     relocation += gotplt->output_offset;
3120                 }
3121               else
3122                 {
3123                   relocation = (base_got->output_section->vma
3124                                 + base_got->output_offset + off
3125                                 - gotplt->output_section->vma
3126                                 - gotplt->output_offset);
3127                   /* Adjust for static executables.  */
3128                   if (htab->elf.splt == NULL)
3129                     relocation += gotplt->output_offset;
3130                 }
3131
3132               goto do_relocation;
3133
3134             case R_386_GOTOFF:
3135               relocation -= (gotplt->output_section->vma
3136                              + gotplt->output_offset);
3137               goto do_relocation;
3138             }
3139         }
3140
3141       switch (r_type)
3142         {
3143         case R_386_GOT32:
3144           /* Relocation is to the entry for this symbol in the global
3145              offset table.  */
3146           if (htab->elf.sgot == NULL)
3147             abort ();
3148
3149           if (h != NULL)
3150             {
3151               bfd_boolean dyn;
3152
3153               off = h->got.offset;
3154               dyn = htab->elf.dynamic_sections_created;
3155               if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3156                   || (info->shared
3157                       && SYMBOL_REFERENCES_LOCAL (info, h))
3158                   || (ELF_ST_VISIBILITY (h->other)
3159                       && h->root.type == bfd_link_hash_undefweak))
3160                 {
3161                   /* This is actually a static link, or it is a
3162                      -Bsymbolic link and the symbol is defined
3163                      locally, or the symbol was forced to be local
3164                      because of a version file.  We must initialize
3165                      this entry in the global offset table.  Since the
3166                      offset must always be a multiple of 4, we use the
3167                      least significant bit to record whether we have
3168                      initialized it already.
3169
3170                      When doing a dynamic link, we create a .rel.got
3171                      relocation entry to initialize the value.  This
3172                      is done in the finish_dynamic_symbol routine.  */
3173                   if ((off & 1) != 0)
3174                     off &= ~1;
3175                   else
3176                     {
3177                       bfd_put_32 (output_bfd, relocation,
3178                                   htab->elf.sgot->contents + off);
3179                       h->got.offset |= 1;
3180                     }
3181                 }
3182               else
3183                 unresolved_reloc = FALSE;
3184             }
3185           else
3186             {
3187               if (local_got_offsets == NULL)
3188                 abort ();
3189
3190               off = local_got_offsets[r_symndx];
3191
3192               /* The offset must always be a multiple of 4.  We use
3193                  the least significant bit to record whether we have
3194                  already generated the necessary reloc.  */
3195               if ((off & 1) != 0)
3196                 off &= ~1;
3197               else
3198                 {
3199                   bfd_put_32 (output_bfd, relocation,
3200                               htab->elf.sgot->contents + off);
3201
3202                   if (info->shared)
3203                     {
3204                       asection *s;
3205                       Elf_Internal_Rela outrel;
3206                       bfd_byte *loc;
3207
3208                       s = htab->elf.srelgot;
3209                       if (s == NULL)
3210                         abort ();
3211
3212                       outrel.r_offset = (htab->elf.sgot->output_section->vma
3213                                          + htab->elf.sgot->output_offset
3214                                          + off);
3215                       outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3216                       loc = s->contents;
3217                       loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
3218                       bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3219                     }
3220
3221                   local_got_offsets[r_symndx] |= 1;
3222                 }
3223             }
3224
3225           if (off >= (bfd_vma) -2)
3226             abort ();
3227
3228           relocation = htab->elf.sgot->output_section->vma
3229                        + htab->elf.sgot->output_offset + off
3230                        - htab->elf.sgotplt->output_section->vma
3231                        - htab->elf.sgotplt->output_offset;
3232           break;
3233
3234         case R_386_GOTOFF:
3235           /* Relocation is relative to the start of the global offset
3236              table.  */
3237
3238           /* Check to make sure it isn't a protected function symbol
3239              for shared library since it may not be local when used
3240              as function address.  We also need to make sure that a
3241              symbol is defined locally.  */
3242           if (info->shared && h)
3243             {
3244               if (!h->def_regular)
3245                 {
3246                   const char *v;
3247
3248                   switch (ELF_ST_VISIBILITY (h->other))
3249                     {
3250                     case STV_HIDDEN:
3251                       v = _("hidden symbol");
3252                       break;
3253                     case STV_INTERNAL:
3254                       v = _("internal symbol");
3255                       break;
3256                     case STV_PROTECTED:
3257                       v = _("protected symbol");
3258                       break;
3259                     default:
3260                       v = _("symbol");
3261                       break;
3262                     }
3263
3264                   (*_bfd_error_handler)
3265                     (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3266                      input_bfd, v, h->root.root.string);
3267                   bfd_set_error (bfd_error_bad_value);
3268                   return FALSE;
3269                 }
3270               else if (!info->executable
3271                        && h->type == STT_FUNC
3272                        && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3273                 {
3274                   (*_bfd_error_handler)
3275                     (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3276                      input_bfd, h->root.root.string);
3277                   bfd_set_error (bfd_error_bad_value);
3278                   return FALSE;
3279                 }
3280             }
3281
3282           /* Note that sgot is not involved in this
3283              calculation.  We always want the start of .got.plt.  If we
3284              defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
3285              permitted by the ABI, we might have to change this
3286              calculation.  */
3287           relocation -= htab->elf.sgotplt->output_section->vma
3288                         + htab->elf.sgotplt->output_offset;
3289           break;
3290
3291         case R_386_GOTPC:
3292           /* Use global offset table as symbol value.  */
3293           relocation = htab->elf.sgotplt->output_section->vma
3294                        + htab->elf.sgotplt->output_offset;
3295           unresolved_reloc = FALSE;
3296           break;
3297
3298         case R_386_PLT32:
3299           /* Relocation is to the entry for this symbol in the
3300              procedure linkage table.  */
3301
3302           /* Resolve a PLT32 reloc against a local symbol directly,
3303              without using the procedure linkage table.  */
3304           if (h == NULL)
3305             break;
3306
3307           if (h->plt.offset == (bfd_vma) -1
3308               || htab->elf.splt == NULL)
3309             {
3310               /* We didn't make a PLT entry for this symbol.  This
3311                  happens when statically linking PIC code, or when
3312                  using -Bsymbolic.  */
3313               break;
3314             }
3315
3316           relocation = (htab->elf.splt->output_section->vma
3317                         + htab->elf.splt->output_offset
3318                         + h->plt.offset);
3319           unresolved_reloc = FALSE;
3320           break;
3321
3322         case R_386_32:
3323         case R_386_PC32:
3324           if ((input_section->flags & SEC_ALLOC) == 0
3325               || is_vxworks_tls)
3326             break;
3327
3328           if ((info->shared
3329                && (h == NULL
3330                    || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3331                    || h->root.type != bfd_link_hash_undefweak)
3332                && (r_type != R_386_PC32
3333                    || !SYMBOL_CALLS_LOCAL (info, h)))
3334               || (ELIMINATE_COPY_RELOCS
3335                   && !info->shared
3336                   && h != NULL
3337                   && h->dynindx != -1
3338                   && !h->non_got_ref
3339                   && ((h->def_dynamic
3340                        && !h->def_regular)
3341                       || h->root.type == bfd_link_hash_undefweak
3342                       || h->root.type == bfd_link_hash_undefined)))
3343             {
3344               Elf_Internal_Rela outrel;
3345               bfd_byte *loc;
3346               bfd_boolean skip, relocate;
3347               asection *sreloc;
3348
3349               /* When generating a shared object, these relocations
3350                  are copied into the output file to be resolved at run
3351                  time.  */
3352
3353               skip = FALSE;
3354               relocate = FALSE;
3355
3356               outrel.r_offset =
3357                 _bfd_elf_section_offset (output_bfd, info, input_section,
3358                                          rel->r_offset);
3359               if (outrel.r_offset == (bfd_vma) -1)
3360                 skip = TRUE;
3361               else if (outrel.r_offset == (bfd_vma) -2)
3362                 skip = TRUE, relocate = TRUE;
3363               outrel.r_offset += (input_section->output_section->vma
3364                                   + input_section->output_offset);
3365
3366               if (skip)
3367                 memset (&outrel, 0, sizeof outrel);
3368               else if (h != NULL
3369                        && h->dynindx != -1
3370                        && (r_type == R_386_PC32
3371                            || !info->shared
3372                            || !SYMBOLIC_BIND (info, h)
3373                            || !h->def_regular))
3374                 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3375               else
3376                 {
3377                   /* This symbol is local, or marked to become local.  */
3378                   relocate = TRUE;
3379                   outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3380                 }
3381
3382               sreloc = elf_section_data (input_section)->sreloc;
3383
3384               BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL);
3385
3386               loc = sreloc->contents;
3387               loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3388
3389               bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3390
3391               /* If this reloc is against an external symbol, we do
3392                  not want to fiddle with the addend.  Otherwise, we
3393                  need to include the symbol value so that it becomes
3394                  an addend for the dynamic reloc.  */
3395               if (! relocate)
3396                 continue;
3397             }
3398           break;
3399
3400         case R_386_TLS_IE:
3401           if (!info->executable)
3402             {
3403               Elf_Internal_Rela outrel;
3404               bfd_byte *loc;
3405               asection *sreloc;
3406
3407               outrel.r_offset = rel->r_offset
3408                                 + input_section->output_section->vma
3409                                 + input_section->output_offset;
3410               outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3411               sreloc = elf_section_data (input_section)->sreloc;
3412               if (sreloc == NULL)
3413                 abort ();
3414               loc = sreloc->contents;
3415               loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3416               bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3417             }
3418           /* Fall through */
3419
3420         case R_386_TLS_GD:
3421         case R_386_TLS_GOTDESC:
3422         case R_386_TLS_DESC_CALL:
3423         case R_386_TLS_IE_32:
3424         case R_386_TLS_GOTIE:
3425           tls_type = GOT_UNKNOWN;
3426           if (h == NULL && local_got_offsets)
3427             tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3428           else if (h != NULL)
3429             tls_type = elf_i386_hash_entry(h)->tls_type;
3430           if (tls_type == GOT_TLS_IE)
3431             tls_type = GOT_TLS_IE_NEG;
3432
3433           if (! elf_i386_tls_transition (info, input_bfd,
3434                                          input_section, contents,
3435                                          symtab_hdr, sym_hashes,
3436                                          &r_type, tls_type, rel,
3437                                          relend, h, r_symndx))
3438             return FALSE;
3439
3440           if (r_type == R_386_TLS_LE_32)
3441             {
3442               BFD_ASSERT (! unresolved_reloc);
3443               if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3444                 {
3445                   unsigned int type;
3446                   bfd_vma roff;
3447
3448                   /* GD->LE transition.  */
3449                   type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3450                   if (type == 0x04)
3451                     {
3452                       /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3453                          Change it into:
3454                          movl %gs:0, %eax; subl $foo@tpoff, %eax
3455                          (6 byte form of subl).  */
3456                       memcpy (contents + rel->r_offset - 3,
3457                               "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3458                       roff = rel->r_offset + 5;
3459                     }
3460                   else
3461                     {
3462                       /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3463                          Change it into:
3464                          movl %gs:0, %eax; subl $foo@tpoff, %eax
3465                          (6 byte form of subl).  */
3466                       memcpy (contents + rel->r_offset - 2,
3467                               "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3468                       roff = rel->r_offset + 6;
3469                     }
3470                   bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
3471                               contents + roff);
3472                   /* Skip R_386_PC32/R_386_PLT32.  */
3473                   rel++;
3474                   continue;
3475                 }
3476               else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3477                 {
3478                   /* GDesc -> LE transition.
3479                      It's originally something like:
3480                      leal x@tlsdesc(%ebx), %eax
3481
3482                      leal x@ntpoff, %eax
3483
3484                      Registers other than %eax may be set up here.  */
3485
3486                   unsigned int val;
3487                   bfd_vma roff;
3488
3489                   roff = rel->r_offset;
3490                   val = bfd_get_8 (input_bfd, contents + roff - 1);
3491
3492                   /* Now modify the instruction as appropriate.  */
3493                   /* aoliva FIXME: remove the above and xor the byte
3494                      below with 0x86.  */
3495                   bfd_put_8 (output_bfd, val ^ 0x86,
3496                              contents + roff - 1);
3497                   bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
3498                               contents + roff);
3499                   continue;
3500                 }
3501               else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3502                 {
3503                   /* GDesc -> LE transition.
3504                      It's originally:
3505                      call *(%eax)
3506                      Turn it into:
3507                      xchg %ax,%ax  */
3508
3509                   bfd_vma roff;
3510
3511                   roff = rel->r_offset;
3512                   bfd_put_8 (output_bfd, 0x66, contents + roff);
3513                   bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3514                   continue;
3515                 }
3516               else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
3517                 {
3518                   unsigned int val;
3519
3520                   /* IE->LE transition:
3521                      Originally it can be one of:
3522                      movl foo, %eax
3523                      movl foo, %reg
3524                      addl foo, %reg
3525                      We change it into:
3526                      movl $foo, %eax
3527                      movl $foo, %reg
3528                      addl $foo, %reg.  */
3529                   val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3530                   if (val == 0xa1)
3531                     {
3532                       /* movl foo, %eax.  */
3533                       bfd_put_8 (output_bfd, 0xb8,
3534                                  contents + rel->r_offset - 1);
3535                     }
3536                   else
3537                     {
3538                       unsigned int type;
3539
3540                       type = bfd_get_8 (input_bfd,
3541                                         contents + rel->r_offset - 2);
3542                       switch (type)
3543                         {
3544                         case 0x8b:
3545                           /* movl */
3546                           bfd_put_8 (output_bfd, 0xc7,
3547                                      contents + rel->r_offset - 2);
3548                           bfd_put_8 (output_bfd,
3549                                      0xc0 | ((val >> 3) & 7),
3550                                      contents + rel->r_offset - 1);
3551                           break;
3552                         case 0x03:
3553                           /* addl */
3554                           bfd_put_8 (output_bfd, 0x81,
3555                                      contents + rel->r_offset - 2);
3556                           bfd_put_8 (output_bfd,
3557                                      0xc0 | ((val >> 3) & 7),
3558                                      contents + rel->r_offset - 1);
3559                           break;
3560                         default:
3561                           BFD_FAIL ();
3562                           break;
3563                         }
3564                     }
3565                   bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
3566                               contents + rel->r_offset);
3567                   continue;
3568                 }
3569               else
3570                 {
3571                   unsigned int val, type;
3572
3573                   /* {IE_32,GOTIE}->LE transition:
3574                      Originally it can be one of:
3575                      subl foo(%reg1), %reg2
3576                      movl foo(%reg1), %reg2
3577                      addl foo(%reg1), %reg2
3578                      We change it into:
3579                      subl $foo, %reg2
3580                      movl $foo, %reg2 (6 byte form)
3581                      addl $foo, %reg2.  */
3582                   type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3583                   val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3584                   if (type == 0x8b)
3585                     {
3586                       /* movl */
3587                       bfd_put_8 (output_bfd, 0xc7,
3588                                  contents + rel->r_offset - 2);
3589                       bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3590                                  contents + rel->r_offset - 1);
3591                     }
3592                   else if (type == 0x2b)
3593                     {
3594                       /* subl */
3595                       bfd_put_8 (output_bfd, 0x81,
3596                                  contents + rel->r_offset - 2);
3597                       bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3598                                  contents + rel->r_offset - 1);
3599                     }
3600                   else if (type == 0x03)
3601                     {
3602                       /* addl */
3603                       bfd_put_8 (output_bfd, 0x81,
3604                                  contents + rel->r_offset - 2);
3605                       bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3606                                  contents + rel->r_offset - 1);
3607                     }
3608                   else
3609                     BFD_FAIL ();
3610                   if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
3611                     bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
3612                                 contents + rel->r_offset);
3613                   else
3614                     bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
3615                                 contents + rel->r_offset);
3616                   continue;
3617                 }
3618             }
3619
3620           if (htab->elf.sgot == NULL)
3621             abort ();
3622
3623           if (h != NULL)
3624             {
3625               off = h->got.offset;
3626               offplt = elf_i386_hash_entry (h)->tlsdesc_got;
3627             }
3628           else
3629             {
3630               if (local_got_offsets == NULL)
3631                 abort ();
3632
3633               off = local_got_offsets[r_symndx];
3634               offplt = local_tlsdesc_gotents[r_symndx];
3635             }
3636
3637           if ((off & 1) != 0)
3638             off &= ~1;
3639           else
3640             {
3641               Elf_Internal_Rela outrel;
3642               bfd_byte *loc;
3643               int dr_type;
3644               asection *sreloc;
3645
3646               if (htab->elf.srelgot == NULL)
3647                 abort ();
3648
3649               indx = h && h->dynindx != -1 ? h->dynindx : 0;
3650
3651               if (GOT_TLS_GDESC_P (tls_type))
3652                 {
3653                   outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
3654                   BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
3655                               <= htab->elf.sgotplt->size);
3656                   outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3657                                      + htab->elf.sgotplt->output_offset
3658                                      + offplt
3659                                      + htab->sgotplt_jump_table_size);
3660                   sreloc = htab->elf.srelplt;
3661                   loc = sreloc->contents;
3662                   loc += (htab->next_tls_desc_index++
3663                           * sizeof (Elf32_External_Rel));
3664                   BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3665                               <= sreloc->contents + sreloc->size);
3666                   bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3667                   if (indx == 0)
3668                     {
3669                       BFD_ASSERT (! unresolved_reloc);
3670                       bfd_put_32 (output_bfd,
3671                                   relocation - elf_i386_dtpoff_base (info),
3672                                   htab->elf.sgotplt->contents + offplt
3673                                   + htab->sgotplt_jump_table_size + 4);
3674                     }
3675                   else
3676                     {
3677                       bfd_put_32 (output_bfd, 0,
3678                                   htab->elf.sgotplt->contents + offplt
3679                                   + htab->sgotplt_jump_table_size + 4);
3680                     }
3681                 }
3682
3683               sreloc = htab->elf.srelgot;
3684
3685               outrel.r_offset = (htab->elf.sgot->output_section->vma
3686                                  + htab->elf.sgot->output_offset + off);
3687
3688               if (GOT_TLS_GD_P (tls_type))
3689                 dr_type = R_386_TLS_DTPMOD32;
3690               else if (GOT_TLS_GDESC_P (tls_type))
3691                 goto dr_done;
3692               else if (tls_type == GOT_TLS_IE_POS)
3693                 dr_type = R_386_TLS_TPOFF;
3694               else
3695                 dr_type = R_386_TLS_TPOFF32;
3696
3697               if (dr_type == R_386_TLS_TPOFF && indx == 0)
3698                 bfd_put_32 (output_bfd,
3699                             relocation - elf_i386_dtpoff_base (info),
3700                             htab->elf.sgot->contents + off);
3701               else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
3702                 bfd_put_32 (output_bfd,
3703                             elf_i386_dtpoff_base (info) - relocation,
3704                             htab->elf.sgot->contents + off);
3705               else if (dr_type != R_386_TLS_DESC)
3706                 bfd_put_32 (output_bfd, 0,
3707                             htab->elf.sgot->contents + off);
3708               outrel.r_info = ELF32_R_INFO (indx, dr_type);
3709
3710               loc = sreloc->contents;
3711               loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3712               BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3713                           <= sreloc->contents + sreloc->size);
3714               bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3715
3716               if (GOT_TLS_GD_P (tls_type))
3717                 {
3718                   if (indx == 0)
3719                     {
3720                       BFD_ASSERT (! unresolved_reloc);
3721                       bfd_put_32 (output_bfd,
3722                                   relocation - elf_i386_dtpoff_base (info),
3723                                   htab->elf.sgot->contents + off + 4);
3724                     }
3725                   else
3726                     {
3727                       bfd_put_32 (output_bfd, 0,
3728                                   htab->elf.sgot->contents + off + 4);
3729                       outrel.r_info = ELF32_R_INFO (indx,
3730                                                     R_386_TLS_DTPOFF32);
3731                       outrel.r_offset += 4;
3732                       sreloc->reloc_count++;
3733                       loc += sizeof (Elf32_External_Rel);
3734                       BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3735                                   <= sreloc->contents + sreloc->size);
3736                       bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3737                     }
3738                 }
3739               else if (tls_type == GOT_TLS_IE_BOTH)
3740                 {
3741                   bfd_put_32 (output_bfd,
3742                               (indx == 0
3743                                ? relocation - elf_i386_dtpoff_base (info)
3744                                : 0),
3745                               htab->elf.sgot->contents + off + 4);
3746                   outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3747                   outrel.r_offset += 4;
3748                   sreloc->reloc_count++;
3749                   loc += sizeof (Elf32_External_Rel);
3750                   bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3751                 }
3752
3753             dr_done:
3754               if (h != NULL)
3755                 h->got.offset |= 1;
3756               else
3757                 local_got_offsets[r_symndx] |= 1;
3758             }
3759
3760           if (off >= (bfd_vma) -2
3761               && ! GOT_TLS_GDESC_P (tls_type))
3762             abort ();
3763           if (r_type == R_386_TLS_GOTDESC
3764               || r_type == R_386_TLS_DESC_CALL)
3765             {
3766               relocation = htab->sgotplt_jump_table_size + offplt;
3767               unresolved_reloc = FALSE;
3768             }
3769           else if (r_type == ELF32_R_TYPE (rel->r_info))
3770             {
3771               bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
3772                               + htab->elf.sgotplt->output_offset;
3773               relocation = htab->elf.sgot->output_section->vma
3774                 + htab->elf.sgot->output_offset + off - g_o_t;
3775               if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
3776                   && tls_type == GOT_TLS_IE_BOTH)
3777                 relocation += 4;
3778               if (r_type == R_386_TLS_IE)
3779                 relocation += g_o_t;
3780               unresolved_reloc = FALSE;
3781             }
3782           else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3783             {
3784               unsigned int val, type;
3785               bfd_vma roff;
3786
3787               /* GD->IE transition.  */
3788               type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3789               val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3790               if (type == 0x04)
3791                 {
3792                   /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3793                      Change it into:
3794                      movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax.  */
3795                   val >>= 3;
3796                   roff = rel->r_offset - 3;
3797                 }
3798               else
3799                 {
3800                   /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3801                      Change it into:
3802                      movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax.  */
3803                   roff = rel->r_offset - 2;
3804                 }
3805               memcpy (contents + roff,
3806                       "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
3807               contents[roff + 7] = 0x80 | (val & 7);
3808               /* If foo is used only with foo@gotntpoff(%reg) and
3809                  foo@indntpoff, but not with foo@gottpoff(%reg), change
3810                  subl $foo@gottpoff(%reg), %eax
3811                  into:
3812                  addl $foo@gotntpoff(%reg), %eax.  */
3813               if (tls_type == GOT_TLS_IE_POS)
3814                 contents[roff + 6] = 0x03;
3815               bfd_put_32 (output_bfd,
3816                           htab->elf.sgot->output_section->vma
3817                           + htab->elf.sgot->output_offset + off
3818                           - htab->elf.sgotplt->output_section->vma
3819                           - htab->elf.sgotplt->output_offset,
3820                           contents + roff + 8);
3821               /* Skip R_386_PLT32.  */
3822               rel++;
3823               continue;
3824             }
3825           else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3826             {
3827               /* GDesc -> IE transition.
3828                  It's originally something like:
3829                  leal x@tlsdesc(%ebx), %eax
3830
3831                  Change it to:
3832                  movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
3833                  or:
3834                  movl x@gottpoff(%ebx), %eax # before negl %eax
3835
3836                  Registers other than %eax may be set up here.  */
3837
3838               bfd_vma roff;
3839
3840               /* First, make sure it's a leal adding ebx to a 32-bit
3841                  offset into any register, although it's probably
3842                  almost always going to be eax.  */
3843               roff = rel->r_offset;
3844
3845               /* Now modify the instruction as appropriate.  */
3846               /* To turn a leal into a movl in the form we use it, it
3847                  suffices to change the first byte from 0x8d to 0x8b.
3848                  aoliva FIXME: should we decide to keep the leal, all
3849                  we have to do is remove the statement below, and
3850                  adjust the relaxation of R_386_TLS_DESC_CALL.  */
3851               bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3852
3853               if (tls_type == GOT_TLS_IE_BOTH)
3854                 off += 4;
3855
3856               bfd_put_32 (output_bfd,
3857                           htab->elf.sgot->output_section->vma
3858                           + htab->elf.sgot->output_offset + off
3859                           - htab->elf.sgotplt->output_section->vma
3860                           - htab->elf.sgotplt->output_offset,
3861                           contents + roff);
3862               continue;
3863             }
3864           else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3865             {
3866               /* GDesc -> IE transition.
3867                  It's originally:
3868                  call *(%eax)
3869
3870                  Change it to:
3871                  xchg %ax,%ax
3872                  or
3873                  negl %eax
3874                  depending on how we transformed the TLS_GOTDESC above.
3875               */
3876
3877               bfd_vma roff;
3878
3879               roff = rel->r_offset;
3880
3881               /* Now modify the instruction as appropriate.  */
3882               if (tls_type != GOT_TLS_IE_NEG)
3883                 {
3884                   /* xchg %ax,%ax */
3885                   bfd_put_8 (output_bfd, 0x66, contents + roff);
3886                   bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3887                 }
3888               else
3889                 {
3890                   /* negl %eax */
3891                   bfd_put_8 (output_bfd, 0xf7, contents + roff);
3892                   bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
3893                 }
3894
3895               continue;
3896             }
3897           else
3898             BFD_ASSERT (FALSE);
3899           break;
3900
3901         case R_386_TLS_LDM:
3902           if (! elf_i386_tls_transition (info, input_bfd,
3903                                          input_section, contents,
3904                                          symtab_hdr, sym_hashes,
3905                                          &r_type, GOT_UNKNOWN, rel,
3906                                          relend, h, r_symndx))
3907             return FALSE;
3908
3909           if (r_type != R_386_TLS_LDM)
3910             {
3911               /* LD->LE transition:
3912                  leal foo(%reg), %eax; call ___tls_get_addr.
3913                  We change it into:
3914                  movl %gs:0, %eax; nop; leal 0(%esi,1), %esi.  */
3915               BFD_ASSERT (r_type == R_386_TLS_LE_32);
3916               memcpy (contents + rel->r_offset - 2,
3917                       "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
3918               /* Skip R_386_PC32/R_386_PLT32.  */
3919               rel++;
3920               continue;
3921             }
3922
3923           if (htab->elf.sgot == NULL)
3924             abort ();
3925
3926           off = htab->tls_ldm_got.offset;
3927           if (off & 1)
3928             off &= ~1;
3929           else
3930             {
3931               Elf_Internal_Rela outrel;
3932               bfd_byte *loc;
3933
3934               if (htab->elf.srelgot == NULL)
3935                 abort ();
3936
3937               outrel.r_offset = (htab->elf.sgot->output_section->vma
3938                                  + htab->elf.sgot->output_offset + off);
3939
3940               bfd_put_32 (output_bfd, 0,
3941                           htab->elf.sgot->contents + off);
3942               bfd_put_32 (output_bfd, 0,
3943                           htab->elf.sgot->contents + off + 4);
3944               outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
3945               loc = htab->elf.srelgot->contents;
3946               loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
3947               bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3948               htab->tls_ldm_got.offset |= 1;
3949             }
3950           relocation = htab->elf.sgot->output_section->vma
3951                        + htab->elf.sgot->output_offset + off
3952                        - htab->elf.sgotplt->output_section->vma
3953                        - htab->elf.sgotplt->output_offset;
3954           unresolved_reloc = FALSE;
3955           break;
3956
3957         case R_386_TLS_LDO_32:
3958           if (info->shared || (input_section->flags & SEC_CODE) == 0)
3959             relocation -= elf_i386_dtpoff_base (info);
3960           else
3961             /* When converting LDO to LE, we must negate.  */
3962             relocation = -elf_i386_tpoff (info, relocation);
3963           break;
3964
3965         case R_386_TLS_LE_32:
3966         case R_386_TLS_LE:
3967           if (!info->executable)
3968             {
3969               Elf_Internal_Rela outrel;
3970               asection *sreloc;
3971               bfd_byte *loc;
3972
3973               outrel.r_offset = rel->r_offset
3974                                 + input_section->output_section->vma
3975                                 + input_section->output_offset;
3976               if (h != NULL && h->dynindx != -1)
3977                 indx = h->dynindx;
3978               else
3979                 indx = 0;
3980               if (r_type == R_386_TLS_LE_32)
3981                 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
3982               else
3983                 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3984               sreloc = elf_section_data (input_section)->sreloc;
3985               if (sreloc == NULL)
3986                 abort ();
3987               loc = sreloc->contents;
3988               loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3989               bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3990               if (indx)
3991                 continue;
3992               else if (r_type == R_386_TLS_LE_32)
3993                 relocation = elf_i386_dtpoff_base (info) - relocation;
3994               else
3995                 relocation -= elf_i386_dtpoff_base (info);
3996             }
3997           else if (r_type == R_386_TLS_LE_32)
3998             relocation = elf_i386_tpoff (info, relocation);
3999           else
4000             relocation = -elf_i386_tpoff (info, relocation);
4001           break;
4002
4003         default:
4004           break;
4005         }
4006
4007       /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4008          because such sections are not SEC_ALLOC and thus ld.so will
4009          not process them.  */
4010       if (unresolved_reloc
4011           && !((input_section->flags & SEC_DEBUGGING) != 0
4012                && h->def_dynamic))
4013         {
4014           (*_bfd_error_handler)
4015             (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
4016              input_bfd,
4017              input_section,
4018              (long) rel->r_offset,
4019              howto->name,
4020              h->root.root.string);
4021           return FALSE;
4022         }
4023
4024 do_relocation:
4025       r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4026                                     contents, rel->r_offset,
4027                                     relocation, 0);
4028
4029       if (r != bfd_reloc_ok)
4030         {
4031           const char *name;
4032
4033           if (h != NULL)
4034             name = h->root.root.string;
4035           else
4036             {
4037               name = bfd_elf_string_from_elf_section (input_bfd,
4038                                                       symtab_hdr->sh_link,
4039                                                       sym->st_name);
4040               if (name == NULL)
4041                 return FALSE;
4042               if (*name == '\0')
4043                 name = bfd_section_name (input_bfd, sec);
4044             }
4045
4046           if (r == bfd_reloc_overflow)
4047             {
4048               if (! ((*info->callbacks->reloc_overflow)
4049                      (info, (h ? &h->root : NULL), name, howto->name,
4050                       (bfd_vma) 0, input_bfd, input_section,
4051                       rel->r_offset)))
4052                 return FALSE;
4053             }
4054           else
4055             {
4056               (*_bfd_error_handler)
4057                 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4058                  input_bfd, input_section,
4059                  (long) rel->r_offset, name, (int) r);
4060               return FALSE;
4061             }
4062         }
4063     }
4064
4065   return TRUE;
4066 }
4067
4068 /* Finish up dynamic symbol handling.  We set the contents of various
4069    dynamic sections here.  */
4070
4071 static bfd_boolean
4072 elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4073                                 struct bfd_link_info *info,
4074                                 struct elf_link_hash_entry *h,
4075                                 Elf_Internal_Sym *sym)
4076 {
4077   struct elf_i386_link_hash_table *htab;
4078
4079   htab = elf_i386_hash_table (info);
4080   if (htab == NULL)
4081     return FALSE;
4082
4083   if (h->plt.offset != (bfd_vma) -1)
4084     {
4085       bfd_vma plt_index;
4086       bfd_vma got_offset;
4087       Elf_Internal_Rela rel;
4088       bfd_byte *loc;
4089       asection *plt, *gotplt, *relplt;
4090
4091       /* When building a static executable, use .iplt, .igot.plt and
4092          .rel.iplt sections for STT_GNU_IFUNC symbols.  */
4093       if (htab->elf.splt != NULL)
4094         {
4095           plt = htab->elf.splt;
4096           gotplt = htab->elf.sgotplt;
4097           relplt = htab->elf.srelplt;
4098         }
4099       else
4100         {
4101           plt = htab->elf.iplt;
4102           gotplt = htab->elf.igotplt;
4103           relplt = htab->elf.irelplt;
4104         }
4105
4106       /* This symbol has an entry in the procedure linkage table.  Set
4107          it up.  */
4108
4109       if ((h->dynindx == -1
4110            && !((h->forced_local || info->executable)
4111                 && h->def_regular
4112                 && h->type == STT_GNU_IFUNC))
4113           || plt == NULL
4114           || gotplt == NULL
4115           || relplt == NULL)
4116         abort ();
4117
4118       /* Get the index in the procedure linkage table which
4119          corresponds to this symbol.  This is the index of this symbol
4120          in all the symbols for which we are making plt entries.  The
4121          first entry in the procedure linkage table is reserved.
4122
4123          Get the offset into the .got table of the entry that
4124          corresponds to this function.  Each .got entry is 4 bytes.
4125          The first three are reserved.
4126
4127          For static executables, we don't reserve anything.  */
4128
4129       if (plt == htab->elf.splt)
4130         {
4131           plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
4132           got_offset = (plt_index + 3) * 4;
4133         }
4134       else
4135         {
4136           plt_index = h->plt.offset / PLT_ENTRY_SIZE;
4137           got_offset = plt_index * 4;
4138         }
4139
4140       /* Fill in the entry in the procedure linkage table.  */
4141       if (! info->shared)
4142         {
4143           memcpy (plt->contents + h->plt.offset, elf_i386_plt_entry,
4144                   PLT_ENTRY_SIZE);
4145           bfd_put_32 (output_bfd,
4146                       (gotplt->output_section->vma
4147                        + gotplt->output_offset
4148                        + got_offset),
4149                       plt->contents + h->plt.offset + 2);
4150
4151           if (htab->is_vxworks)
4152             {
4153               int s, k, reloc_index;
4154
4155               /* Create the R_386_32 relocation referencing the GOT
4156                  for this PLT entry.  */
4157
4158               /* S: Current slot number (zero-based).  */
4159               s = (h->plt.offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE;
4160               /* K: Number of relocations for PLTResolve. */
4161               if (info->shared)
4162                 k = PLTRESOLVE_RELOCS_SHLIB;
4163               else
4164                 k = PLTRESOLVE_RELOCS;
4165               /* Skip the PLTresolve relocations, and the relocations for
4166                  the other PLT slots. */
4167               reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4168               loc = (htab->srelplt2->contents + reloc_index
4169                      * sizeof (Elf32_External_Rel));
4170
4171               rel.r_offset = (htab->elf.splt->output_section->vma
4172                               + htab->elf.splt->output_offset
4173                               + h->plt.offset + 2),
4174               rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4175               bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4176
4177               /* Create the R_386_32 relocation referencing the beginning of
4178                  the PLT for this GOT entry.  */
4179               rel.r_offset = (htab->elf.sgotplt->output_section->vma
4180                               + htab->elf.sgotplt->output_offset
4181                               + got_offset);
4182               rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
4183               bfd_elf32_swap_reloc_out (output_bfd, &rel,
4184               loc + sizeof (Elf32_External_Rel));
4185             }
4186         }
4187       else
4188         {
4189           memcpy (plt->contents + h->plt.offset, elf_i386_pic_plt_entry,
4190                   PLT_ENTRY_SIZE);
4191           bfd_put_32 (output_bfd, got_offset,
4192                       plt->contents + h->plt.offset + 2);
4193         }
4194
4195       /* Don't fill PLT entry for static executables.  */
4196       if (plt == htab->elf.splt)
4197         {
4198           bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4199                       plt->contents + h->plt.offset + 7);
4200           bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE),
4201                       plt->contents + h->plt.offset + 12);
4202         }
4203
4204       /* Fill in the entry in the global offset table.  */
4205       bfd_put_32 (output_bfd,
4206                   (plt->output_section->vma
4207                    + plt->output_offset
4208                    + h->plt.offset
4209                    + 6),
4210                   gotplt->contents + got_offset);
4211
4212       /* Fill in the entry in the .rel.plt section.  */
4213       rel.r_offset = (gotplt->output_section->vma
4214                       + gotplt->output_offset
4215                       + got_offset);
4216       if (h->dynindx == -1
4217           || ((info->executable
4218                || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4219               && h->def_regular
4220                && h->type == STT_GNU_IFUNC))
4221         {
4222           /* If an STT_GNU_IFUNC symbol is locally defined, generate
4223              R_386_IRELATIVE instead of R_386_JUMP_SLOT.  Store addend
4224              in the .got.plt section.  */
4225           bfd_put_32 (output_bfd,
4226                       (h->root.u.def.value
4227                        + h->root.u.def.section->output_section->vma
4228                        + h->root.u.def.section->output_offset),
4229                       gotplt->contents + got_offset);
4230           rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
4231         }
4232       else
4233         rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4234       loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
4235       bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4236
4237       if (!h->def_regular)
4238         {
4239           /* Mark the symbol as undefined, rather than as defined in
4240              the .plt section.  Leave the value if there were any
4241              relocations where pointer equality matters (this is a clue
4242              for the dynamic linker, to make function pointer
4243              comparisons work between an application and shared
4244              library), otherwise set it to zero.  If a function is only
4245              called from a binary, there is no need to slow down
4246              shared libraries because of that.  */
4247           sym->st_shndx = SHN_UNDEF;
4248           if (!h->pointer_equality_needed)
4249             sym->st_value = 0;
4250         }
4251     }
4252
4253   if (h->got.offset != (bfd_vma) -1
4254       && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
4255       && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
4256     {
4257       Elf_Internal_Rela rel;
4258       bfd_byte *loc;
4259
4260       /* This symbol has an entry in the global offset table.  Set it
4261          up.  */
4262
4263       if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
4264         abort ();
4265
4266       rel.r_offset = (htab->elf.sgot->output_section->vma
4267                       + htab->elf.sgot->output_offset
4268                       + (h->got.offset & ~(bfd_vma) 1));
4269
4270       /* If this is a static link, or it is a -Bsymbolic link and the
4271          symbol is defined locally or was forced to be local because
4272          of a version file, we just want to emit a RELATIVE reloc.
4273          The entry in the global offset table will already have been
4274          initialized in the relocate_section function.  */
4275       if (h->def_regular
4276           && h->type == STT_GNU_IFUNC)
4277         {
4278           if (info->shared)
4279             {
4280               /* Generate R_386_GLOB_DAT.  */
4281               goto do_glob_dat;
4282             }
4283           else
4284             {
4285               asection *plt;
4286
4287               if (!h->pointer_equality_needed)
4288                 abort ();
4289
4290               /* For non-shared object, we can't use .got.plt, which
4291                  contains the real function addres if we need pointer
4292                  equality.  We load the GOT entry with the PLT entry.  */
4293               plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4294               bfd_put_32 (output_bfd,
4295                           (plt->output_section->vma
4296                            + plt->output_offset + h->plt.offset),
4297                           htab->elf.sgot->contents + h->got.offset);
4298               return TRUE;
4299             }
4300         }
4301       else if (info->shared
4302                && SYMBOL_REFERENCES_LOCAL (info, h))
4303         {
4304           BFD_ASSERT((h->got.offset & 1) != 0);
4305           rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4306         }
4307       else
4308         {
4309           BFD_ASSERT((h->got.offset & 1) == 0);
4310 do_glob_dat:
4311           bfd_put_32 (output_bfd, (bfd_vma) 0,
4312                       htab->elf.sgot->contents + h->got.offset);
4313           rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4314         }
4315
4316       loc = htab->elf.srelgot->contents;
4317       loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
4318       bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4319     }
4320
4321   if (h->needs_copy)
4322     {
4323       Elf_Internal_Rela rel;
4324       bfd_byte *loc;
4325
4326       /* This symbol needs a copy reloc.  Set it up.  */
4327
4328       if (h->dynindx == -1
4329           || (h->root.type != bfd_link_hash_defined
4330               && h->root.type != bfd_link_hash_defweak)
4331           || htab->srelbss == NULL)
4332         abort ();
4333
4334       rel.r_offset = (h->root.u.def.value
4335                       + h->root.u.def.section->output_section->vma
4336                       + h->root.u.def.section->output_offset);
4337       rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
4338       loc = htab->srelbss->contents;
4339       loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
4340       bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4341     }
4342
4343   /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute.  SYM may
4344      be NULL for local symbols.
4345
4346      On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it
4347      is relative to the ".got" section.  */
4348   if (sym != NULL
4349       && (strcmp (h->root.root.string, "_DYNAMIC") == 0
4350           || (!htab->is_vxworks && h == htab->elf.hgot)))
4351     sym->st_shndx = SHN_ABS;
4352
4353   return TRUE;
4354 }
4355
4356 /* Finish up local dynamic symbol handling.  We set the contents of
4357    various dynamic sections here.  */
4358
4359 static bfd_boolean
4360 elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4361 {
4362   struct elf_link_hash_entry *h
4363     = (struct elf_link_hash_entry *) *slot;
4364   struct bfd_link_info *info
4365     = (struct bfd_link_info *) inf;
4366
4367   return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4368                                          h, NULL);
4369 }
4370
4371 /* Used to decide how to sort relocs in an optimal manner for the
4372    dynamic linker, before writing them out.  */
4373
4374 static enum elf_reloc_type_class
4375 elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
4376 {
4377   switch (ELF32_R_TYPE (rela->r_info))
4378     {
4379     case R_386_RELATIVE:
4380       return reloc_class_relative;
4381     case R_386_JUMP_SLOT:
4382       return reloc_class_plt;
4383     case R_386_COPY:
4384       return reloc_class_copy;
4385     default:
4386       return reloc_class_normal;
4387     }
4388 }
4389
4390 /* Finish up the dynamic sections.  */
4391
4392 static bfd_boolean
4393 elf_i386_finish_dynamic_sections (bfd *output_bfd,
4394                                   struct bfd_link_info *info)
4395 {
4396   struct elf_i386_link_hash_table *htab;
4397   bfd *dynobj;
4398   asection *sdyn;
4399
4400   htab = elf_i386_hash_table (info);
4401   if (htab == NULL)
4402     return FALSE;
4403
4404   dynobj = htab->elf.dynobj;
4405   sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4406
4407   if (htab->elf.dynamic_sections_created)
4408     {
4409       Elf32_External_Dyn *dyncon, *dynconend;
4410
4411       if (sdyn == NULL || htab->elf.sgot == NULL)
4412         abort ();
4413
4414       dyncon = (Elf32_External_Dyn *) sdyn->contents;
4415       dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4416       for (; dyncon < dynconend; dyncon++)
4417         {
4418           Elf_Internal_Dyn dyn;
4419           asection *s;
4420
4421           bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4422
4423           switch (dyn.d_tag)
4424             {
4425             default:
4426               if (htab->is_vxworks
4427                   && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4428                 break;
4429               continue;
4430
4431             case DT_PLTGOT:
4432               s = htab->elf.sgotplt;
4433               dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4434               break;
4435
4436             case DT_JMPREL:
4437               s = htab->elf.srelplt;
4438               dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4439               break;
4440
4441             case DT_PLTRELSZ:
4442               s = htab->elf.srelplt;
4443               dyn.d_un.d_val = s->size;
4444               break;
4445
4446             case DT_RELSZ:
4447               /* My reading of the SVR4 ABI indicates that the
4448                  procedure linkage table relocs (DT_JMPREL) should be
4449                  included in the overall relocs (DT_REL).  This is
4450                  what Solaris does.  However, UnixWare can not handle
4451                  that case.  Therefore, we override the DT_RELSZ entry
4452                  here to make it not include the JMPREL relocs.  */
4453               s = htab->elf.srelplt;
4454               if (s == NULL)
4455                 continue;
4456               dyn.d_un.d_val -= s->size;
4457               break;
4458
4459             case DT_REL:
4460               /* We may not be using the standard ELF linker script.
4461                  If .rel.plt is the first .rel section, we adjust
4462                  DT_REL to not include it.  */
4463               s = htab->elf.srelplt;
4464               if (s == NULL)
4465                 continue;
4466               if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4467                 continue;
4468               dyn.d_un.d_ptr += s->size;
4469               break;
4470             }
4471
4472           bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4473         }
4474
4475       /* Fill in the first entry in the procedure linkage table.  */
4476       if (htab->elf.splt && htab->elf.splt->size > 0)
4477         {
4478           if (info->shared)
4479             {
4480               memcpy (htab->elf.splt->contents, elf_i386_pic_plt0_entry,
4481                       sizeof (elf_i386_pic_plt0_entry));
4482               memset (htab->elf.splt->contents + sizeof (elf_i386_pic_plt0_entry),
4483                       htab->plt0_pad_byte,
4484                       PLT_ENTRY_SIZE - sizeof (elf_i386_pic_plt0_entry));
4485             }
4486           else
4487             {
4488               memcpy (htab->elf.splt->contents, elf_i386_plt0_entry,
4489                       sizeof(elf_i386_plt0_entry));
4490               memset (htab->elf.splt->contents + sizeof (elf_i386_plt0_entry),
4491                       htab->plt0_pad_byte,
4492                       PLT_ENTRY_SIZE - sizeof (elf_i386_plt0_entry));
4493               bfd_put_32 (output_bfd,
4494                           (htab->elf.sgotplt->output_section->vma
4495                            + htab->elf.sgotplt->output_offset
4496                            + 4),
4497                           htab->elf.splt->contents + 2);
4498               bfd_put_32 (output_bfd,
4499                           (htab->elf.sgotplt->output_section->vma
4500                            + htab->elf.sgotplt->output_offset
4501                            + 8),
4502                           htab->elf.splt->contents + 8);
4503
4504               if (htab->is_vxworks)
4505                 {
4506                   Elf_Internal_Rela rel;
4507
4508                   /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4509                      On IA32 we use REL relocations so the addend goes in
4510                      the PLT directly.  */
4511                   rel.r_offset = (htab->elf.splt->output_section->vma
4512                                   + htab->elf.splt->output_offset
4513                                   + 2);
4514                   rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4515                   bfd_elf32_swap_reloc_out (output_bfd, &rel,
4516                                             htab->srelplt2->contents);
4517                   /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8.  */
4518                   rel.r_offset = (htab->elf.splt->output_section->vma
4519                                   + htab->elf.splt->output_offset
4520                                   + 8);
4521                   rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4522                   bfd_elf32_swap_reloc_out (output_bfd, &rel,
4523                                             htab->srelplt2->contents +
4524                                             sizeof (Elf32_External_Rel));
4525                 }
4526             }
4527
4528           /* UnixWare sets the entsize of .plt to 4, although that doesn't
4529              really seem like the right value.  */
4530           elf_section_data (htab->elf.splt->output_section)
4531             ->this_hdr.sh_entsize = 4;
4532
4533           /* Correct the .rel.plt.unloaded relocations.  */
4534           if (htab->is_vxworks && !info->shared)
4535             {
4536               int num_plts = (htab->elf.splt->size / PLT_ENTRY_SIZE) - 1;
4537               unsigned char *p;
4538
4539               p = htab->srelplt2->contents;
4540               if (info->shared)
4541                 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4542               else
4543                 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4544
4545               for (; num_plts; num_plts--)
4546                 {
4547                   Elf_Internal_Rela rel;
4548                   bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
4549                   rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4550                   bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4551                   p += sizeof (Elf32_External_Rel);
4552
4553                   bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
4554                   rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
4555                   bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4556                   p += sizeof (Elf32_External_Rel);
4557                 }
4558             }
4559         }
4560     }
4561
4562   if (htab->elf.sgotplt)
4563     {
4564       /* Fill in the first three entries in the global offset table.  */
4565       if (htab->elf.sgotplt->size > 0)
4566         {
4567           bfd_put_32 (output_bfd,
4568                       (sdyn == NULL ? 0
4569                        : sdyn->output_section->vma + sdyn->output_offset),
4570                       htab->elf.sgotplt->contents);
4571           bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
4572           bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
4573         }
4574
4575       elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
4576     }
4577
4578   if (htab->elf.sgot && htab->elf.sgot->size > 0)
4579     elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
4580
4581   /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols.  */
4582   htab_traverse (htab->loc_hash_table,
4583                  elf_i386_finish_local_dynamic_symbol,
4584                  info);
4585
4586   return TRUE;
4587 }
4588
4589 /* Return address for Ith PLT stub in section PLT, for relocation REL
4590    or (bfd_vma) -1 if it should not be included.  */
4591
4592 static bfd_vma
4593 elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
4594                       const arelent *rel ATTRIBUTE_UNUSED)
4595 {
4596   return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
4597 }
4598
4599 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section.  */
4600
4601 static bfd_boolean
4602 elf_i386_hash_symbol (struct elf_link_hash_entry *h)
4603 {
4604   if (h->plt.offset != (bfd_vma) -1
4605       && !h->def_regular
4606       && !h->pointer_equality_needed)
4607     return FALSE;
4608
4609   return _bfd_elf_hash_symbol (h);
4610 }
4611
4612 /* Hook called by the linker routine which adds symbols from an object
4613    file.  */
4614
4615 static bfd_boolean
4616 elf_i386_add_symbol_hook (bfd * abfd,
4617                           struct bfd_link_info * info ATTRIBUTE_UNUSED,
4618                           Elf_Internal_Sym * sym,
4619                           const char ** namep ATTRIBUTE_UNUSED,
4620                           flagword * flagsp ATTRIBUTE_UNUSED,
4621                           asection ** secp ATTRIBUTE_UNUSED,
4622                           bfd_vma * valp ATTRIBUTE_UNUSED)
4623 {
4624   if ((abfd->flags & DYNAMIC) == 0
4625       && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
4626     elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
4627
4628   return TRUE;
4629 }
4630
4631 #define TARGET_LITTLE_SYM               bfd_elf32_i386_vec
4632 #define TARGET_LITTLE_NAME              "elf32-i386"
4633 #define ELF_ARCH                        bfd_arch_i386
4634 #define ELF_MACHINE_CODE                EM_386
4635 #define ELF_MAXPAGESIZE                 0x1000
4636
4637 #define elf_backend_can_gc_sections     1
4638 #define elf_backend_can_refcount        1
4639 #define elf_backend_want_got_plt        1
4640 #define elf_backend_plt_readonly        1
4641 #define elf_backend_want_plt_sym        0
4642 #define elf_backend_got_header_size     12
4643
4644 /* Support RELA for objdump of prelink objects.  */
4645 #define elf_info_to_howto                     elf_i386_info_to_howto_rel
4646 #define elf_info_to_howto_rel                 elf_i386_info_to_howto_rel
4647
4648 #define bfd_elf32_mkobject                    elf_i386_mkobject
4649
4650 #define bfd_elf32_bfd_is_local_label_name     elf_i386_is_local_label_name
4651 #define bfd_elf32_bfd_link_hash_table_create  elf_i386_link_hash_table_create
4652 #define bfd_elf32_bfd_link_hash_table_free    elf_i386_link_hash_table_free
4653 #define bfd_elf32_bfd_reloc_type_lookup       elf_i386_reloc_type_lookup
4654 #define bfd_elf32_bfd_reloc_name_lookup       elf_i386_reloc_name_lookup
4655
4656 #define elf_backend_adjust_dynamic_symbol     elf_i386_adjust_dynamic_symbol
4657 #define elf_backend_relocs_compatible         _bfd_elf_relocs_compatible
4658 #define elf_backend_check_relocs              elf_i386_check_relocs
4659 #define elf_backend_copy_indirect_symbol      elf_i386_copy_indirect_symbol
4660 #define elf_backend_create_dynamic_sections   elf_i386_create_dynamic_sections
4661 #define elf_backend_fake_sections             elf_i386_fake_sections
4662 #define elf_backend_finish_dynamic_sections   elf_i386_finish_dynamic_sections
4663 #define elf_backend_finish_dynamic_symbol     elf_i386_finish_dynamic_symbol
4664 #define elf_backend_gc_mark_hook              elf_i386_gc_mark_hook
4665 #define elf_backend_gc_sweep_hook             elf_i386_gc_sweep_hook
4666 #define elf_backend_grok_prstatus             elf_i386_grok_prstatus
4667 #define elf_backend_grok_psinfo               elf_i386_grok_psinfo
4668 #define elf_backend_reloc_type_class          elf_i386_reloc_type_class
4669 #define elf_backend_relocate_section          elf_i386_relocate_section
4670 #define elf_backend_size_dynamic_sections     elf_i386_size_dynamic_sections
4671 #define elf_backend_always_size_sections      elf_i386_always_size_sections
4672 #define elf_backend_omit_section_dynsym \
4673   ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4674 #define elf_backend_plt_sym_val               elf_i386_plt_sym_val
4675 #define elf_backend_hash_symbol               elf_i386_hash_symbol
4676 #define elf_backend_add_symbol_hook           elf_i386_add_symbol_hook
4677 #undef  elf_backend_post_process_headers
4678 #define elf_backend_post_process_headers        _bfd_elf_set_osabi
4679
4680 #include "elf32-target.h"
4681
4682 /* FreeBSD support.  */
4683
4684 #undef  TARGET_LITTLE_SYM
4685 #define TARGET_LITTLE_SYM               bfd_elf32_i386_freebsd_vec
4686 #undef  TARGET_LITTLE_NAME
4687 #define TARGET_LITTLE_NAME              "elf32-i386-freebsd"
4688 #undef  ELF_OSABI
4689 #define ELF_OSABI                       ELFOSABI_FREEBSD
4690
4691 /* The kernel recognizes executables as valid only if they carry a
4692    "FreeBSD" label in the ELF header.  So we put this label on all
4693    executables and (for simplicity) also all other object files.  */
4694
4695 static void
4696 elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
4697 {
4698   _bfd_elf_set_osabi (abfd, info);
4699
4700 #ifdef OLD_FREEBSD_ABI_LABEL
4701   /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard.  */
4702   memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
4703 #endif
4704 }
4705
4706 #undef  elf_backend_post_process_headers
4707 #define elf_backend_post_process_headers        elf_i386_fbsd_post_process_headers
4708 #undef  elf32_bed
4709 #define elf32_bed                               elf32_i386_fbsd_bed
4710
4711 #undef elf_backend_add_symbol_hook
4712
4713 #include "elf32-target.h"
4714
4715 /* Solaris 2.  */
4716
4717 #undef  TARGET_LITTLE_SYM
4718 #define TARGET_LITTLE_SYM               bfd_elf32_i386_sol2_vec
4719 #undef  TARGET_LITTLE_NAME
4720 #define TARGET_LITTLE_NAME              "elf32-i386-sol2"
4721
4722 /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
4723    objects won't be recognized.  */
4724 #undef ELF_OSABI
4725
4726 #undef  elf32_bed
4727 #define elf32_bed                       elf32_i386_sol2_bed
4728
4729 /* The Solaris 2 ABI requires a plt symbol on all platforms.
4730
4731    Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
4732    File, p.63.  */
4733 #undef elf_backend_want_plt_sym
4734 #define elf_backend_want_plt_sym        1
4735
4736 #include "elf32-target.h"
4737
4738 /* VxWorks support.  */
4739
4740 #undef  TARGET_LITTLE_SYM
4741 #define TARGET_LITTLE_SYM               bfd_elf32_i386_vxworks_vec
4742 #undef  TARGET_LITTLE_NAME
4743 #define TARGET_LITTLE_NAME              "elf32-i386-vxworks"
4744 #undef  ELF_OSABI
4745
4746 /* Like elf_i386_link_hash_table_create but with tweaks for VxWorks.  */
4747
4748 static struct bfd_link_hash_table *
4749 elf_i386_vxworks_link_hash_table_create (bfd *abfd)
4750 {
4751   struct bfd_link_hash_table *ret;
4752   struct elf_i386_link_hash_table *htab;
4753
4754   ret = elf_i386_link_hash_table_create (abfd);
4755   if (ret)
4756     {
4757       htab = (struct elf_i386_link_hash_table *) ret;
4758       htab->is_vxworks = 1;
4759       htab->plt0_pad_byte = 0x90;
4760     }
4761
4762   return ret;
4763 }
4764
4765
4766 #undef elf_backend_relocs_compatible
4767 #undef elf_backend_post_process_headers
4768 #undef bfd_elf32_bfd_link_hash_table_create
4769 #define bfd_elf32_bfd_link_hash_table_create \
4770   elf_i386_vxworks_link_hash_table_create
4771 #undef elf_backend_add_symbol_hook
4772 #define elf_backend_add_symbol_hook \
4773   elf_vxworks_add_symbol_hook
4774 #undef elf_backend_link_output_symbol_hook
4775 #define elf_backend_link_output_symbol_hook \
4776   elf_vxworks_link_output_symbol_hook
4777 #undef elf_backend_emit_relocs
4778 #define elf_backend_emit_relocs                 elf_vxworks_emit_relocs
4779 #undef elf_backend_final_write_processing
4780 #define elf_backend_final_write_processing \
4781   elf_vxworks_final_write_processing
4782
4783 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
4784    define it.  */
4785 #undef elf_backend_want_plt_sym
4786 #define elf_backend_want_plt_sym        1
4787
4788 #undef  elf32_bed
4789 #define elf32_bed                               elf32_i386_vxworks_bed
4790
4791 #include "elf32-target.h"