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_lwpid = 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_lwpid = 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_pid
 479             = bfd_get_32 (abfd, note->descdata + 12);
 480           elf_tdata (abfd)->core_program
 481             = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
 482           elf_tdata (abfd)->core_command
 483             = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
 484         }
 485     }
 486
 487   /* Note that for some reason, a spurious space is tacked
 488      onto the end of the args in some (at least one anyway)
 489      implementations, so strip it off if it exists.  */
 490   {
 491     char *command = elf_tdata (abfd)->core_command;
 492     int n = strlen (command);
 493
 494     if (0 < n && command[n - 1] == ' ')
 495       command[n - 1] = '\0';
 496   }
 497
 498   return TRUE;
 499 }
 500 \f
 501 /* Functions for the i386 ELF linker.
 502
 503    In order to gain some understanding of code in this file without
 504    knowing all the intricate details of the linker, note the
 505    following:
 506
 507    Functions named elf_i386_* are called by external routines, other
 508    functions are only called locally.  elf_i386_* functions appear
 509    in this file more or less in the order in which they are called
 510    from external routines.  eg. elf_i386_check_relocs is called
 511    early in the link process, elf_i386_finish_dynamic_sections is
 512    one of the last functions.  */
 513
 514
 515 /* The name of the dynamic interpreter.  This is put in the .interp
 516    section.  */
 517
 518 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
 519
 520 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
 521    copying dynamic variables from a shared lib into an app's dynbss
 522    section, and instead use a dynamic relocation to point into the
 523    shared lib.  */
 524 #define ELIMINATE_COPY_RELOCS 1
 525
 526 /* The size in bytes of an entry in the procedure linkage table.  */
 527
 528 #define PLT_ENTRY_SIZE 16
 529
 530 /* The first entry in an absolute procedure linkage table looks like
 531    this.  See the SVR4 ABI i386 supplement to see how this works.
 532    Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte.  */
 533
 534 static const bfd_byte elf_i386_plt0_entry[12] =
 535 {
 536   0xff, 0x35,   /* pushl contents of address */
 537   0, 0, 0, 0,   /* replaced with address of .got + 4.  */
 538   0xff, 0x25,   /* jmp indirect */
 539   0, 0, 0, 0    /* replaced with address of .got + 8.  */
 540 };
 541
 542 /* Subsequent entries in an absolute procedure linkage table look like
 543    this.  */
 544
 545 static const bfd_byte elf_i386_plt_entry[PLT_ENTRY_SIZE] =
 546 {
 547   0xff, 0x25,   /* jmp indirect */
 548   0, 0, 0, 0,   /* replaced with address of this symbol in .got.  */
 549   0x68,         /* pushl immediate */
 550   0, 0, 0, 0,   /* replaced with offset into relocation table.  */
 551   0xe9,         /* jmp relative */
 552   0, 0, 0, 0    /* replaced with offset to start of .plt.  */
 553 };
 554
 555 /* The first entry in a PIC procedure linkage table look like this.
 556    Will be padded to PLT_ENTRY_SIZE with htab->plt0_pad_byte.  */
 557
 558 static const bfd_byte elf_i386_pic_plt0_entry[12] =
 559 {
 560   0xff, 0xb3, 4, 0, 0, 0,       /* pushl 4(%ebx) */
 561   0xff, 0xa3, 8, 0, 0, 0        /* jmp *8(%ebx) */
 562 };
 563
 564 /* Subsequent entries in a PIC procedure linkage table look like this.  */
 565
 566 static const bfd_byte elf_i386_pic_plt_entry[PLT_ENTRY_SIZE] =
 567 {
 568   0xff, 0xa3,   /* jmp *offset(%ebx) */
 569   0, 0, 0, 0,   /* replaced with offset of this symbol in .got.  */
 570   0x68,         /* pushl immediate */
 571   0, 0, 0, 0,   /* replaced with offset into relocation table.  */
 572   0xe9,         /* jmp relative */
 573   0, 0, 0, 0    /* replaced with offset to start of .plt.  */
 574 };
 575
 576 /* On VxWorks, the .rel.plt.unloaded section has absolute relocations
 577    for the PLTResolve stub and then for each PLT entry.  */
 578 #define PLTRESOLVE_RELOCS_SHLIB 0
 579 #define PLTRESOLVE_RELOCS 2
 580 #define PLT_NON_JUMP_SLOT_RELOCS 2
 581
 582 /* i386 ELF linker hash entry.  */
 583
 584 struct elf_i386_link_hash_entry
 585 {
 586   struct elf_link_hash_entry elf;
 587
 588   /* Track dynamic relocs copied for this symbol.  */
 589   struct elf_dyn_relocs *dyn_relocs;
 590
 591 #define GOT_UNKNOWN     0
 592 #define GOT_NORMAL      1
 593 #define GOT_TLS_GD      2
 594 #define GOT_TLS_IE      4
 595 #define GOT_TLS_IE_POS  5
 596 #define GOT_TLS_IE_NEG  6
 597 #define GOT_TLS_IE_BOTH 7
 598 #define GOT_TLS_GDESC   8
 599 #define GOT_TLS_GD_BOTH_P(type)                                         \
 600   ((type) == (GOT_TLS_GD | GOT_TLS_GDESC))
 601 #define GOT_TLS_GD_P(type)                                              \
 602   ((type) == GOT_TLS_GD || GOT_TLS_GD_BOTH_P (type))
 603 #define GOT_TLS_GDESC_P(type)                                           \
 604   ((type) == GOT_TLS_GDESC || GOT_TLS_GD_BOTH_P (type))
 605 #define GOT_TLS_GD_ANY_P(type)                                          \
 606   (GOT_TLS_GD_P (type) || GOT_TLS_GDESC_P (type))
 607   unsigned char tls_type;
 608
 609   /* Offset of the GOTPLT entry reserved for the TLS descriptor,
 610      starting at the end of the jump table.  */
 611   bfd_vma tlsdesc_got;
 612 };
 613
 614 #define elf_i386_hash_entry(ent) ((struct elf_i386_link_hash_entry *)(ent))
 615
 616 struct elf_i386_obj_tdata
 617 {
 618   struct elf_obj_tdata root;
 619
 620   /* tls_type for each local got entry.  */
 621   char *local_got_tls_type;
 622
 623   /* GOTPLT entries for TLS descriptors.  */
 624   bfd_vma *local_tlsdesc_gotent;
 625 };
 626
 627 #define elf_i386_tdata(abfd) \
 628   ((struct elf_i386_obj_tdata *) (abfd)->tdata.any)
 629
 630 #define elf_i386_local_got_tls_type(abfd) \
 631   (elf_i386_tdata (abfd)->local_got_tls_type)
 632
 633 #define elf_i386_local_tlsdesc_gotent(abfd) \
 634   (elf_i386_tdata (abfd)->local_tlsdesc_gotent)
 635
 636 #define is_i386_elf(bfd)                                \
 637   (bfd_get_flavour (bfd) == bfd_target_elf_flavour      \
 638    && elf_tdata (bfd) != NULL                           \
 639    && elf_object_id (bfd) == I386_ELF_DATA)
 640
 641 static bfd_boolean
 642 elf_i386_mkobject (bfd *abfd)
 643 {
 644   return bfd_elf_allocate_object (abfd, sizeof (struct elf_i386_obj_tdata),
 645                                   I386_ELF_DATA);
 646 }
 647
 648 /* i386 ELF linker hash table.  */
 649
 650 struct elf_i386_link_hash_table
 651 {
 652   struct elf_link_hash_table elf;
 653
 654   /* Short-cuts to get to dynamic linker sections.  */
 655   asection *sdynbss;
 656   asection *srelbss;
 657
 658   union
 659   {
 660     bfd_signed_vma refcount;
 661     bfd_vma offset;
 662   } tls_ldm_got;
 663
 664   /* The amount of space used by the reserved portion of the sgotplt
 665      section, plus whatever space is used by the jump slots.  */
 666   bfd_vma sgotplt_jump_table_size;
 667
 668   /* Small local sym cache.  */
 669   struct sym_cache sym_cache;
 670
 671   /* _TLS_MODULE_BASE_ symbol.  */
 672   struct bfd_link_hash_entry *tls_module_base;
 673
 674   /* Used by local STT_GNU_IFUNC symbols.  */
 675   htab_t loc_hash_table;
 676   void * loc_hash_memory;
 677
 678   /* The (unloaded but important) .rel.plt.unloaded section on VxWorks.  */
 679   asection *srelplt2;
 680
 681   /* True if the target system is VxWorks.  */
 682   int is_vxworks;
 683
 684   /* The index of the next unused R_386_TLS_DESC slot in .rel.plt.  */
 685   bfd_vma next_tls_desc_index;
 686
 687   /* Value used to fill the last word of the first plt entry.  */
 688   bfd_byte plt0_pad_byte;
 689 };
 690
 691 /* Get the i386 ELF linker hash table from a link_info structure.  */
 692
 693 #define elf_i386_hash_table(p) \
 694   (elf_hash_table_id  ((struct elf_link_hash_table *) ((p)->hash)) \
 695   == I386_ELF_DATA ? ((struct elf_i386_link_hash_table *) ((p)->hash)) : NULL)
 696
 697 #define elf_i386_compute_jump_table_size(htab) \
 698   ((htab)->next_tls_desc_index * 4)
 699
 700 /* Create an entry in an i386 ELF linker hash table.  */
 701
 702 static struct bfd_hash_entry *
 703 elf_i386_link_hash_newfunc (struct bfd_hash_entry *entry,
 704                             struct bfd_hash_table *table,
 705                             const char *string)
 706 {
 707   /* Allocate the structure if it has not already been allocated by a
 708      subclass.  */
 709   if (entry == NULL)
 710     {
 711       entry = (struct bfd_hash_entry *)
 712           bfd_hash_allocate (table, sizeof (struct elf_i386_link_hash_entry));
 713       if (entry == NULL)
 714         return entry;
 715     }
 716
 717   /* Call the allocation method of the superclass.  */
 718   entry = _bfd_elf_link_hash_newfunc (entry, table, string);
 719   if (entry != NULL)
 720     {
 721       struct elf_i386_link_hash_entry *eh;
 722
 723       eh = (struct elf_i386_link_hash_entry *) entry;
 724       eh->dyn_relocs = NULL;
 725       eh->tls_type = GOT_UNKNOWN;
 726       eh->tlsdesc_got = (bfd_vma) -1;
 727     }
 728
 729   return entry;
 730 }
 731
 732 /* Compute a hash of a local hash entry.  We use elf_link_hash_entry
 733   for local symbol so that we can handle local STT_GNU_IFUNC symbols
 734   as global symbol.  We reuse indx and dynstr_index for local symbol
 735   hash since they aren't used by global symbols in this backend.  */
 736
 737 static hashval_t
 738 elf_i386_local_htab_hash (const void *ptr)
 739 {
 740   struct elf_link_hash_entry *h
 741     = (struct elf_link_hash_entry *) ptr;
 742   return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index);
 743 }
 744
 745 /* Compare local hash entries.  */
 746
 747 static int
 748 elf_i386_local_htab_eq (const void *ptr1, const void *ptr2)
 749 {
 750   struct elf_link_hash_entry *h1
 751      = (struct elf_link_hash_entry *) ptr1;
 752   struct elf_link_hash_entry *h2
 753     = (struct elf_link_hash_entry *) ptr2;
 754
 755   return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index;
 756 }
 757
 758 /* Find and/or create a hash entry for local symbol.  */
 759
 760 static struct elf_link_hash_entry *
 761 elf_i386_get_local_sym_hash (struct elf_i386_link_hash_table *htab,
 762                              bfd *abfd, const Elf_Internal_Rela *rel,
 763                              bfd_boolean create)
 764 {
 765   struct elf_i386_link_hash_entry e, *ret;
 766   asection *sec = abfd->sections;
 767   hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id,
 768                                        ELF32_R_SYM (rel->r_info));
 769   void **slot;
 770
 771   e.elf.indx = sec->id;
 772   e.elf.dynstr_index = ELF32_R_SYM (rel->r_info);
 773   slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h,
 774                                    create ? INSERT : NO_INSERT);
 775
 776   if (!slot)
 777     return NULL;
 778
 779   if (*slot)
 780     {
 781       ret = (struct elf_i386_link_hash_entry *) *slot;
 782       return &ret->elf;
 783     }
 784
 785   ret = (struct elf_i386_link_hash_entry *)
 786         objalloc_alloc ((struct objalloc *) htab->loc_hash_memory,
 787                         sizeof (struct elf_i386_link_hash_entry));
 788   if (ret)
 789     {
 790       memset (ret, 0, sizeof (*ret));
 791       ret->elf.indx = sec->id;
 792       ret->elf.dynstr_index = ELF32_R_SYM (rel->r_info);
 793       ret->elf.dynindx = -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   /* Skip TLS transition for functions.  */
1166   if (h != NULL
1167       && (h->type == STT_FUNC
1168           || h->type == STT_GNU_IFUNC))
1169     return TRUE;
1170
1171   switch (from_type)
1172     {
1173     case R_386_TLS_GD:
1174     case R_386_TLS_GOTDESC:
1175     case R_386_TLS_DESC_CALL:
1176     case R_386_TLS_IE_32:
1177     case R_386_TLS_IE:
1178     case R_386_TLS_GOTIE:
1179       if (info->executable)
1180         {
1181           if (h == NULL)
1182             to_type = R_386_TLS_LE_32;
1183           else if (from_type != R_386_TLS_IE
1184                    && from_type != R_386_TLS_GOTIE)
1185             to_type = R_386_TLS_IE_32;
1186         }
1187
1188       /* When we are called from elf_i386_relocate_section, CONTENTS
1189          isn't NULL and there may be additional transitions based on
1190          TLS_TYPE.  */
1191       if (contents != NULL)
1192         {
1193           unsigned int new_to_type = to_type;
1194
1195           if (info->executable
1196               && h != NULL
1197               && h->dynindx == -1
1198               && (tls_type & GOT_TLS_IE))
1199             new_to_type = R_386_TLS_LE_32;
1200
1201           if (to_type == R_386_TLS_GD
1202               || to_type == R_386_TLS_GOTDESC
1203               || to_type == R_386_TLS_DESC_CALL)
1204             {
1205               if (tls_type == GOT_TLS_IE_POS)
1206                 new_to_type = R_386_TLS_GOTIE;
1207               else if (tls_type & GOT_TLS_IE)
1208                 new_to_type = R_386_TLS_IE_32;
1209             }
1210
1211           /* We checked the transition before when we were called from
1212              elf_i386_check_relocs.  We only want to check the new
1213              transition which hasn't been checked before.  */
1214           check = new_to_type != to_type && from_type == to_type;
1215           to_type = new_to_type;
1216         }
1217
1218       break;
1219
1220     case R_386_TLS_LDM:
1221       if (info->executable)
1222         to_type = R_386_TLS_LE_32;
1223       break;
1224
1225     default:
1226       return TRUE;
1227     }
1228
1229   /* Return TRUE if there is no transition.  */
1230   if (from_type == to_type)
1231     return TRUE;
1232
1233   /* Check if the transition can be performed.  */
1234   if (check
1235       && ! elf_i386_check_tls_transition (abfd, sec, contents,
1236                                           symtab_hdr, sym_hashes,
1237                                           from_type, rel, relend))
1238     {
1239       reloc_howto_type *from, *to;
1240       const char *name;
1241
1242       from = elf_i386_rtype_to_howto (abfd, from_type);
1243       to = elf_i386_rtype_to_howto (abfd, to_type);
1244
1245       if (h)
1246         name = h->root.root.string;
1247       else
1248         {
1249           struct elf_i386_link_hash_table *htab;
1250
1251           htab = elf_i386_hash_table (info);
1252           if (htab == NULL)
1253             name = "*unknown*";
1254           else
1255             {
1256               Elf_Internal_Sym *isym;
1257
1258               isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1259                                             abfd, r_symndx);
1260               name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
1261             }
1262         }
1263
1264       (*_bfd_error_handler)
1265         (_("%B: TLS transition from %s to %s against `%s' at 0x%lx "
1266            "in section `%A' failed"),
1267          abfd, sec, from->name, to->name, name,
1268          (unsigned long) rel->r_offset);
1269       bfd_set_error (bfd_error_bad_value);
1270       return FALSE;
1271     }
1272
1273   *r_type = to_type;
1274   return TRUE;
1275 }
1276
1277 /* Look through the relocs for a section during the first phase, and
1278    calculate needed space in the global offset table, procedure linkage
1279    table, and dynamic reloc sections.  */
1280
1281 static bfd_boolean
1282 elf_i386_check_relocs (bfd *abfd,
1283                        struct bfd_link_info *info,
1284                        asection *sec,
1285                        const Elf_Internal_Rela *relocs)
1286 {
1287   struct elf_i386_link_hash_table *htab;
1288   Elf_Internal_Shdr *symtab_hdr;
1289   struct elf_link_hash_entry **sym_hashes;
1290   const Elf_Internal_Rela *rel;
1291   const Elf_Internal_Rela *rel_end;
1292   asection *sreloc;
1293
1294   if (info->relocatable)
1295     return TRUE;
1296
1297   BFD_ASSERT (is_i386_elf (abfd));
1298
1299   htab = elf_i386_hash_table (info);
1300   if (htab == NULL)
1301     return FALSE;
1302
1303   symtab_hdr = &elf_symtab_hdr (abfd);
1304   sym_hashes = elf_sym_hashes (abfd);
1305
1306   sreloc = NULL;
1307
1308   rel_end = relocs + sec->reloc_count;
1309   for (rel = relocs; rel < rel_end; rel++)
1310     {
1311       unsigned int r_type;
1312       unsigned long r_symndx;
1313       struct elf_link_hash_entry *h;
1314       Elf_Internal_Sym *isym;
1315       const char *name;
1316
1317       r_symndx = ELF32_R_SYM (rel->r_info);
1318       r_type = ELF32_R_TYPE (rel->r_info);
1319
1320       if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
1321         {
1322           (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
1323                                  abfd,
1324                                  r_symndx);
1325           return FALSE;
1326         }
1327
1328       if (r_symndx < symtab_hdr->sh_info)
1329         {
1330           /* A local symbol.  */
1331           isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1332                                         abfd, r_symndx);
1333           if (isym == NULL)
1334             return FALSE;
1335
1336           /* Check relocation against local STT_GNU_IFUNC symbol.  */
1337           if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1338             {
1339               h = elf_i386_get_local_sym_hash (htab, abfd, rel, TRUE);
1340               if (h == NULL)
1341                 return FALSE;
1342
1343               /* Fake a STT_GNU_IFUNC symbol.  */
1344               h->type = STT_GNU_IFUNC;
1345               h->def_regular = 1;
1346               h->ref_regular = 1;
1347               h->forced_local = 1;
1348               h->root.type = bfd_link_hash_defined;
1349             }
1350           else
1351             h = NULL;
1352         }
1353       else
1354         {
1355           isym = NULL;
1356           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1357           while (h->root.type == bfd_link_hash_indirect
1358                  || h->root.type == bfd_link_hash_warning)
1359             h = (struct elf_link_hash_entry *) h->root.u.i.link;
1360         }
1361
1362       if (h != NULL)
1363         {
1364           /* Create the ifunc sections for static executables.  If we
1365              never see an indirect function symbol nor we are building
1366              a static executable, those sections will be empty and
1367              won't appear in output.  */
1368           switch (r_type)
1369             {
1370             default:
1371               break;
1372
1373             case R_386_32:
1374             case R_386_PC32:
1375             case R_386_PLT32:
1376             case R_386_GOT32:
1377             case R_386_GOTOFF:
1378               if (!_bfd_elf_create_ifunc_sections (abfd, info))
1379                 return FALSE;
1380               break;
1381             }
1382
1383           /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
1384              it here if it is defined in a non-shared object.  */
1385           if (h->type == STT_GNU_IFUNC
1386               && h->def_regular)
1387             {
1388               /* It is referenced by a non-shared object. */
1389               h->ref_regular = 1;
1390               h->needs_plt = 1;
1391
1392               /* STT_GNU_IFUNC symbol must go through PLT.  */
1393               h->plt.refcount += 1;
1394
1395               /* STT_GNU_IFUNC needs dynamic sections.  */
1396               if (htab->elf.dynobj == NULL)
1397                 htab->elf.dynobj = abfd;
1398
1399               switch (r_type)
1400                 {
1401                 default:
1402                   if (h->root.root.string)
1403                     name = h->root.root.string;
1404                   else
1405                     name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1406                                              NULL);
1407                   (*_bfd_error_handler)
1408                     (_("%B: relocation %s against STT_GNU_IFUNC "
1409                        "symbol `%s' isn't handled by %s"), abfd,
1410                      elf_howto_table[r_type].name,
1411                      name, __FUNCTION__);
1412                   bfd_set_error (bfd_error_bad_value);
1413                   return FALSE;
1414
1415                 case R_386_32:
1416                   h->non_got_ref = 1;
1417                   h->pointer_equality_needed = 1;
1418                   if (info->shared)
1419                     {
1420                       /* We must copy these reloc types into the
1421                          output file.  Create a reloc section in
1422                          dynobj and make room for this reloc.  */
1423                       sreloc = _bfd_elf_create_ifunc_dyn_reloc
1424                         (abfd, info, sec, sreloc,
1425                          &((struct elf_i386_link_hash_entry *) h)->dyn_relocs);
1426                       if (sreloc == NULL)
1427                         return FALSE;
1428                     }
1429                   break;
1430
1431                 case R_386_PC32:
1432                   h->non_got_ref = 1;
1433                   break;
1434
1435                 case R_386_PLT32:
1436                   break;
1437
1438                 case R_386_GOT32:
1439                 case R_386_GOTOFF:
1440                   h->got.refcount += 1;
1441                   if (htab->elf.sgot == NULL
1442                       && !_bfd_elf_create_got_section (htab->elf.dynobj,
1443                                                        info))
1444                     return FALSE;
1445                   break;
1446                 }
1447
1448               continue;
1449             }
1450         }
1451
1452       if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1453                                      symtab_hdr, sym_hashes,
1454                                      &r_type, GOT_UNKNOWN,
1455                                      rel, rel_end, h, r_symndx))
1456         return FALSE;
1457
1458       switch (r_type)
1459         {
1460         case R_386_TLS_LDM:
1461           htab->tls_ldm_got.refcount += 1;
1462           goto create_got;
1463
1464         case R_386_PLT32:
1465           /* This symbol requires a procedure linkage table entry.  We
1466              actually build the entry in adjust_dynamic_symbol,
1467              because this might be a case of linking PIC code which is
1468              never referenced by a dynamic object, in which case we
1469              don't need to generate a procedure linkage table entry
1470              after all.  */
1471
1472           /* If this is a local symbol, we resolve it directly without
1473              creating a procedure linkage table entry.  */
1474           if (h == NULL)
1475             continue;
1476
1477           h->needs_plt = 1;
1478           h->plt.refcount += 1;
1479           break;
1480
1481         case R_386_TLS_IE_32:
1482         case R_386_TLS_IE:
1483         case R_386_TLS_GOTIE:
1484           if (!info->executable)
1485             info->flags |= DF_STATIC_TLS;
1486           /* Fall through */
1487
1488         case R_386_GOT32:
1489         case R_386_TLS_GD:
1490         case R_386_TLS_GOTDESC:
1491         case R_386_TLS_DESC_CALL:
1492           /* This symbol requires a global offset table entry.  */
1493           {
1494             int tls_type, old_tls_type;
1495
1496             switch (r_type)
1497               {
1498               default:
1499               case R_386_GOT32: tls_type = GOT_NORMAL; break;
1500               case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
1501               case R_386_TLS_GOTDESC:
1502               case R_386_TLS_DESC_CALL:
1503                 tls_type = GOT_TLS_GDESC; break;
1504               case R_386_TLS_IE_32:
1505                 if (ELF32_R_TYPE (rel->r_info) == r_type)
1506                   tls_type = GOT_TLS_IE_NEG;
1507                 else
1508                   /* If this is a GD->IE transition, we may use either of
1509                      R_386_TLS_TPOFF and R_386_TLS_TPOFF32.  */
1510                   tls_type = GOT_TLS_IE;
1511                 break;
1512               case R_386_TLS_IE:
1513               case R_386_TLS_GOTIE:
1514                 tls_type = GOT_TLS_IE_POS; break;
1515               }
1516
1517             if (h != NULL)
1518               {
1519                 h->got.refcount += 1;
1520                 old_tls_type = elf_i386_hash_entry(h)->tls_type;
1521               }
1522             else
1523               {
1524                 bfd_signed_vma *local_got_refcounts;
1525
1526                 /* This is a global offset table entry for a local symbol.  */
1527                 local_got_refcounts = elf_local_got_refcounts (abfd);
1528                 if (local_got_refcounts == NULL)
1529                   {
1530                     bfd_size_type size;
1531
1532                     size = symtab_hdr->sh_info;
1533                     size *= (sizeof (bfd_signed_vma)
1534                              + sizeof (bfd_vma) + sizeof(char));
1535                     local_got_refcounts = (bfd_signed_vma *)
1536                         bfd_zalloc (abfd, size);
1537                     if (local_got_refcounts == NULL)
1538                       return FALSE;
1539                     elf_local_got_refcounts (abfd) = local_got_refcounts;
1540                     elf_i386_local_tlsdesc_gotent (abfd)
1541                       = (bfd_vma *) (local_got_refcounts + symtab_hdr->sh_info);
1542                     elf_i386_local_got_tls_type (abfd)
1543                       = (char *) (local_got_refcounts + 2 * symtab_hdr->sh_info);
1544                   }
1545                 local_got_refcounts[r_symndx] += 1;
1546                 old_tls_type = elf_i386_local_got_tls_type (abfd) [r_symndx];
1547               }
1548
1549             if ((old_tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_IE))
1550               tls_type |= old_tls_type;
1551             /* If a TLS symbol is accessed using IE at least once,
1552                there is no point to use dynamic model for it.  */
1553             else if (old_tls_type != tls_type && old_tls_type != GOT_UNKNOWN
1554                      && (! GOT_TLS_GD_ANY_P (old_tls_type)
1555                          || (tls_type & GOT_TLS_IE) == 0))
1556               {
1557                 if ((old_tls_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (tls_type))
1558                   tls_type = old_tls_type;
1559                 else if (GOT_TLS_GD_ANY_P (old_tls_type)
1560                          && GOT_TLS_GD_ANY_P (tls_type))
1561                   tls_type |= old_tls_type;
1562                 else
1563                   {
1564                     if (h)
1565                       name = h->root.root.string;
1566                     else
1567                       name = bfd_elf_sym_name (abfd, symtab_hdr, isym,
1568                                              NULL);
1569                     (*_bfd_error_handler)
1570                       (_("%B: `%s' accessed both as normal and "
1571                          "thread local symbol"),
1572                        abfd, name);
1573                     return FALSE;
1574                   }
1575               }
1576
1577             if (old_tls_type != tls_type)
1578               {
1579                 if (h != NULL)
1580                   elf_i386_hash_entry (h)->tls_type = tls_type;
1581                 else
1582                   elf_i386_local_got_tls_type (abfd) [r_symndx] = tls_type;
1583               }
1584           }
1585           /* Fall through */
1586
1587         case R_386_GOTOFF:
1588         case R_386_GOTPC:
1589         create_got:
1590           if (htab->elf.sgot == NULL)
1591             {
1592               if (htab->elf.dynobj == NULL)
1593                 htab->elf.dynobj = abfd;
1594               if (!_bfd_elf_create_got_section (htab->elf.dynobj, info))
1595                 return FALSE;
1596             }
1597           if (r_type != R_386_TLS_IE)
1598             break;
1599           /* Fall through */
1600
1601         case R_386_TLS_LE_32:
1602         case R_386_TLS_LE:
1603           if (info->executable)
1604             break;
1605           info->flags |= DF_STATIC_TLS;
1606           /* Fall through */
1607
1608         case R_386_32:
1609         case R_386_PC32:
1610           if (h != NULL && info->executable)
1611             {
1612               /* If this reloc is in a read-only section, we might
1613                  need a copy reloc.  We can't check reliably at this
1614                  stage whether the section is read-only, as input
1615                  sections have not yet been mapped to output sections.
1616                  Tentatively set the flag for now, and correct in
1617                  adjust_dynamic_symbol.  */
1618               h->non_got_ref = 1;
1619
1620               /* We may need a .plt entry if the function this reloc
1621                  refers to is in a shared lib.  */
1622               h->plt.refcount += 1;
1623               if (r_type != R_386_PC32)
1624                 h->pointer_equality_needed = 1;
1625             }
1626
1627           /* If we are creating a shared library, and this is a reloc
1628              against a global symbol, or a non PC relative reloc
1629              against a local symbol, then we need to copy the reloc
1630              into the shared library.  However, if we are linking with
1631              -Bsymbolic, we do not need to copy a reloc against a
1632              global symbol which is defined in an object we are
1633              including in the link (i.e., DEF_REGULAR is set).  At
1634              this point we have not seen all the input files, so it is
1635              possible that DEF_REGULAR is not set now but will be set
1636              later (it is never cleared).  In case of a weak definition,
1637              DEF_REGULAR may be cleared later by a strong definition in
1638              a shared library.  We account for that possibility below by
1639              storing information in the relocs_copied field of the hash
1640              table entry.  A similar situation occurs when creating
1641              shared libraries and symbol visibility changes render the
1642              symbol local.
1643
1644              If on the other hand, we are creating an executable, we
1645              may need to keep relocations for symbols satisfied by a
1646              dynamic library if we manage to avoid copy relocs for the
1647              symbol.  */
1648           if ((info->shared
1649                && (sec->flags & SEC_ALLOC) != 0
1650                && (r_type != R_386_PC32
1651                    || (h != NULL
1652                        && (! SYMBOLIC_BIND (info, h)
1653                            || h->root.type == bfd_link_hash_defweak
1654                            || !h->def_regular))))
1655               || (ELIMINATE_COPY_RELOCS
1656                   && !info->shared
1657                   && (sec->flags & SEC_ALLOC) != 0
1658                   && h != NULL
1659                   && (h->root.type == bfd_link_hash_defweak
1660                       || !h->def_regular)))
1661             {
1662               struct elf_dyn_relocs *p;
1663               struct elf_dyn_relocs **head;
1664
1665               /* We must copy these reloc types into the output file.
1666                  Create a reloc section in dynobj and make room for
1667                  this reloc.  */
1668               if (sreloc == NULL)
1669                 {
1670                   if (htab->elf.dynobj == NULL)
1671                     htab->elf.dynobj = abfd;
1672
1673                   sreloc = _bfd_elf_make_dynamic_reloc_section
1674                     (sec, htab->elf.dynobj, 2, abfd, /*rela?*/ FALSE);
1675
1676                   if (sreloc == NULL)
1677                     return FALSE;
1678                 }
1679
1680               /* If this is a global symbol, we count the number of
1681                  relocations we need for this symbol.  */
1682               if (h != NULL)
1683                 {
1684                   head = &((struct elf_i386_link_hash_entry *) h)->dyn_relocs;
1685                 }
1686               else
1687                 {
1688                   /* Track dynamic relocs needed for local syms too.
1689                      We really need local syms available to do this
1690                      easily.  Oh well.  */
1691                   void **vpp;
1692                   asection *s;
1693
1694                   isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1695                                                 abfd, r_symndx);
1696                   if (isym == NULL)
1697                     return FALSE;
1698
1699                   s = bfd_section_from_elf_index (abfd, isym->st_shndx);
1700                   if (s == NULL)
1701                     s = sec;
1702
1703                   vpp = &elf_section_data (s)->local_dynrel;
1704                   head = (struct elf_dyn_relocs **)vpp;
1705                 }
1706
1707               p = *head;
1708               if (p == NULL || p->sec != sec)
1709                 {
1710                   bfd_size_type amt = sizeof *p;
1711                   p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj,
1712                                                            amt);
1713                   if (p == NULL)
1714                     return FALSE;
1715                   p->next = *head;
1716                   *head = p;
1717                   p->sec = sec;
1718                   p->count = 0;
1719                   p->pc_count = 0;
1720                 }
1721
1722               p->count += 1;
1723               if (r_type == R_386_PC32)
1724                 p->pc_count += 1;
1725             }
1726           break;
1727
1728           /* This relocation describes the C++ object vtable hierarchy.
1729              Reconstruct it for later use during GC.  */
1730         case R_386_GNU_VTINHERIT:
1731           if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1732             return FALSE;
1733           break;
1734
1735           /* This relocation describes which C++ vtable entries are actually
1736              used.  Record for later use during GC.  */
1737         case R_386_GNU_VTENTRY:
1738           BFD_ASSERT (h != NULL);
1739           if (h != NULL
1740               && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
1741             return FALSE;
1742           break;
1743
1744         default:
1745           break;
1746         }
1747     }
1748
1749   return TRUE;
1750 }
1751
1752 /* Return the section that should be marked against GC for a given
1753    relocation.  */
1754
1755 static asection *
1756 elf_i386_gc_mark_hook (asection *sec,
1757                        struct bfd_link_info *info,
1758                        Elf_Internal_Rela *rel,
1759                        struct elf_link_hash_entry *h,
1760                        Elf_Internal_Sym *sym)
1761 {
1762   if (h != NULL)
1763     switch (ELF32_R_TYPE (rel->r_info))
1764       {
1765       case R_386_GNU_VTINHERIT:
1766       case R_386_GNU_VTENTRY:
1767         return NULL;
1768       }
1769
1770   return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
1771 }
1772
1773 /* Update the got entry reference counts for the section being removed.  */
1774
1775 static bfd_boolean
1776 elf_i386_gc_sweep_hook (bfd *abfd,
1777                         struct bfd_link_info *info,
1778                         asection *sec,
1779                         const Elf_Internal_Rela *relocs)
1780 {
1781   struct elf_i386_link_hash_table *htab;
1782   Elf_Internal_Shdr *symtab_hdr;
1783   struct elf_link_hash_entry **sym_hashes;
1784   bfd_signed_vma *local_got_refcounts;
1785   const Elf_Internal_Rela *rel, *relend;
1786
1787   if (info->relocatable)
1788     return TRUE;
1789
1790   htab = elf_i386_hash_table (info);
1791   if (htab == NULL)
1792     return FALSE;
1793
1794   elf_section_data (sec)->local_dynrel = NULL;
1795
1796   symtab_hdr = &elf_symtab_hdr (abfd);
1797   sym_hashes = elf_sym_hashes (abfd);
1798   local_got_refcounts = elf_local_got_refcounts (abfd);
1799
1800   relend = relocs + sec->reloc_count;
1801   for (rel = relocs; rel < relend; rel++)
1802     {
1803       unsigned long r_symndx;
1804       unsigned int r_type;
1805       struct elf_link_hash_entry *h = NULL;
1806
1807       r_symndx = ELF32_R_SYM (rel->r_info);
1808       if (r_symndx >= symtab_hdr->sh_info)
1809         {
1810           struct elf_i386_link_hash_entry *eh;
1811           struct elf_dyn_relocs **pp;
1812           struct elf_dyn_relocs *p;
1813
1814           h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1815           while (h->root.type == bfd_link_hash_indirect
1816                  || h->root.type == bfd_link_hash_warning)
1817             h = (struct elf_link_hash_entry *) h->root.u.i.link;
1818           eh = (struct elf_i386_link_hash_entry *) h;
1819
1820           for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
1821             if (p->sec == sec)
1822               {
1823                 /* Everything must go for SEC.  */
1824                 *pp = p->next;
1825                 break;
1826               }
1827         }
1828       else
1829         {
1830           /* A local symbol.  */
1831           Elf_Internal_Sym *isym;
1832
1833           isym = bfd_sym_from_r_symndx (&htab->sym_cache,
1834                                         abfd, r_symndx);
1835
1836           /* Check relocation against local STT_GNU_IFUNC symbol.  */
1837           if (isym != NULL
1838               && ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
1839             {
1840               h = elf_i386_get_local_sym_hash (htab, abfd, rel, FALSE);
1841               if (h == NULL)
1842                 abort ();
1843             }
1844         }
1845
1846       r_type = ELF32_R_TYPE (rel->r_info);
1847       if (! elf_i386_tls_transition (info, abfd, sec, NULL,
1848                                      symtab_hdr, sym_hashes,
1849                                      &r_type, GOT_UNKNOWN,
1850                                      rel, relend, h, r_symndx))
1851         return FALSE;
1852
1853       switch (r_type)
1854         {
1855         case R_386_TLS_LDM:
1856           if (htab->tls_ldm_got.refcount > 0)
1857             htab->tls_ldm_got.refcount -= 1;
1858           break;
1859
1860         case R_386_TLS_GD:
1861         case R_386_TLS_GOTDESC:
1862         case R_386_TLS_DESC_CALL:
1863         case R_386_TLS_IE_32:
1864         case R_386_TLS_IE:
1865         case R_386_TLS_GOTIE:
1866         case R_386_GOT32:
1867           if (h != NULL)
1868             {
1869               if (h->got.refcount > 0)
1870                 h->got.refcount -= 1;
1871               if (h->type == STT_GNU_IFUNC)
1872                 {
1873                   if (h->plt.refcount > 0)
1874                     h->plt.refcount -= 1;
1875                 }
1876             }
1877           else if (local_got_refcounts != NULL)
1878             {
1879               if (local_got_refcounts[r_symndx] > 0)
1880                 local_got_refcounts[r_symndx] -= 1;
1881             }
1882           break;
1883
1884         case R_386_32:
1885         case R_386_PC32:
1886           if (info->shared)
1887             break;
1888           /* Fall through */
1889
1890         case R_386_PLT32:
1891           if (h != NULL)
1892             {
1893               if (h->plt.refcount > 0)
1894                 h->plt.refcount -= 1;
1895             }
1896           break;
1897
1898         case R_386_GOTOFF:
1899           if (h != NULL && h->type == STT_GNU_IFUNC)
1900             {
1901               if (h->got.refcount > 0)
1902                 h->got.refcount -= 1;
1903               if (h->plt.refcount > 0)
1904                 h->plt.refcount -= 1;
1905             }
1906           break;
1907
1908         default:
1909           break;
1910         }
1911     }
1912
1913   return TRUE;
1914 }
1915
1916 /* Adjust a symbol defined by a dynamic object and referenced by a
1917    regular object.  The current definition is in some section of the
1918    dynamic object, but we're not including those sections.  We have to
1919    change the definition to something the rest of the link can
1920    understand.  */
1921
1922 static bfd_boolean
1923 elf_i386_adjust_dynamic_symbol (struct bfd_link_info *info,
1924                                 struct elf_link_hash_entry *h)
1925 {
1926   struct elf_i386_link_hash_table *htab;
1927   asection *s;
1928
1929   /* STT_GNU_IFUNC symbol must go through PLT. */
1930   if (h->type == STT_GNU_IFUNC)
1931     {
1932       if (h->plt.refcount <= 0)
1933         {
1934           h->plt.offset = (bfd_vma) -1;
1935           h->needs_plt = 0;
1936         }
1937       return TRUE;
1938     }
1939
1940   /* If this is a function, put it in the procedure linkage table.  We
1941      will fill in the contents of the procedure linkage table later,
1942      when we know the address of the .got section.  */
1943   if (h->type == STT_FUNC
1944       || h->needs_plt)
1945     {
1946       if (h->plt.refcount <= 0
1947           || SYMBOL_CALLS_LOCAL (info, h)
1948           || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1949               && h->root.type == bfd_link_hash_undefweak))
1950         {
1951           /* This case can occur if we saw a PLT32 reloc in an input
1952              file, but the symbol was never referred to by a dynamic
1953              object, or if all references were garbage collected.  In
1954              such a case, we don't actually need to build a procedure
1955              linkage table, and we can just do a PC32 reloc instead.  */
1956           h->plt.offset = (bfd_vma) -1;
1957           h->needs_plt = 0;
1958         }
1959
1960       return TRUE;
1961     }
1962   else
1963     /* It's possible that we incorrectly decided a .plt reloc was
1964        needed for an R_386_PC32 reloc to a non-function sym in
1965        check_relocs.  We can't decide accurately between function and
1966        non-function syms in check-relocs;  Objects loaded later in
1967        the link may change h->type.  So fix it now.  */
1968     h->plt.offset = (bfd_vma) -1;
1969
1970   /* If this is a weak symbol, and there is a real definition, the
1971      processor independent code will have arranged for us to see the
1972      real definition first, and we can just use the same value.  */
1973   if (h->u.weakdef != NULL)
1974     {
1975       BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1976                   || h->u.weakdef->root.type == bfd_link_hash_defweak);
1977       h->root.u.def.section = h->u.weakdef->root.u.def.section;
1978       h->root.u.def.value = h->u.weakdef->root.u.def.value;
1979       if (ELIMINATE_COPY_RELOCS || info->nocopyreloc)
1980         h->non_got_ref = h->u.weakdef->non_got_ref;
1981       return TRUE;
1982     }
1983
1984   /* This is a reference to a symbol defined by a dynamic object which
1985      is not a function.  */
1986
1987   /* If we are creating a shared library, we must presume that the
1988      only references to the symbol are via the global offset table.
1989      For such cases we need not do anything here; the relocations will
1990      be handled correctly by relocate_section.  */
1991   if (info->shared)
1992     return TRUE;
1993
1994   /* If there are no references to this symbol that do not use the
1995      GOT, we don't need to generate a copy reloc.  */
1996   if (!h->non_got_ref)
1997     return TRUE;
1998
1999   /* If -z nocopyreloc was given, we won't generate them either.  */
2000   if (info->nocopyreloc)
2001     {
2002       h->non_got_ref = 0;
2003       return TRUE;
2004     }
2005
2006   htab = elf_i386_hash_table (info);
2007   if (htab == NULL)
2008     return FALSE;
2009
2010   /* If there aren't any dynamic relocs in read-only sections, then
2011      we can keep the dynamic relocs and avoid the copy reloc.  This
2012      doesn't work on VxWorks, where we can not have dynamic relocations
2013      (other than copy and jump slot relocations) in an executable.  */
2014   if (ELIMINATE_COPY_RELOCS && !htab->is_vxworks)
2015     {
2016       struct elf_i386_link_hash_entry * eh;
2017       struct elf_dyn_relocs *p;
2018
2019       eh = (struct elf_i386_link_hash_entry *) h;
2020       for (p = eh->dyn_relocs; p != NULL; p = p->next)
2021         {
2022           s = p->sec->output_section;
2023           if (s != NULL && (s->flags & SEC_READONLY) != 0)
2024             break;
2025         }
2026
2027       if (p == NULL)
2028         {
2029           h->non_got_ref = 0;
2030           return TRUE;
2031         }
2032     }
2033
2034   if (h->size == 0)
2035     {
2036       (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2037                              h->root.root.string);
2038       return TRUE;
2039     }
2040
2041   /* We must allocate the symbol in our .dynbss section, which will
2042      become part of the .bss section of the executable.  There will be
2043      an entry for this symbol in the .dynsym section.  The dynamic
2044      object will contain position independent code, so all references
2045      from the dynamic object to this symbol will go through the global
2046      offset table.  The dynamic linker will use the .dynsym entry to
2047      determine the address it must put in the global offset table, so
2048      both the dynamic object and the regular object will refer to the
2049      same memory location for the variable.  */
2050
2051   /* We must generate a R_386_COPY reloc to tell the dynamic linker to
2052      copy the initial value out of the dynamic object and into the
2053      runtime process image.  */
2054   if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2055     {
2056       htab->srelbss->size += sizeof (Elf32_External_Rel);
2057       h->needs_copy = 1;
2058     }
2059
2060   s = htab->sdynbss;
2061
2062   return _bfd_elf_adjust_dynamic_copy (h, s);
2063 }
2064
2065 /* Allocate space in .plt, .got and associated reloc sections for
2066    dynamic relocs.  */
2067
2068 static bfd_boolean
2069 elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2070 {
2071   struct bfd_link_info *info;
2072   struct elf_i386_link_hash_table *htab;
2073   struct elf_i386_link_hash_entry *eh;
2074   struct elf_dyn_relocs *p;
2075
2076   if (h->root.type == bfd_link_hash_indirect)
2077     return TRUE;
2078
2079   if (h->root.type == bfd_link_hash_warning)
2080     /* When warning symbols are created, they **replace** the "real"
2081        entry in the hash table, thus we never get to see the real
2082        symbol in a hash traversal.  So look at it now.  */
2083     h = (struct elf_link_hash_entry *) h->root.u.i.link;
2084   eh = (struct elf_i386_link_hash_entry *) h;
2085
2086   info = (struct bfd_link_info *) inf;
2087   htab = elf_i386_hash_table (info);
2088   if (htab == NULL)
2089     return FALSE;
2090
2091   /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it
2092      here if it is defined and referenced in a non-shared object.  */
2093   if (h->type == STT_GNU_IFUNC
2094       && h->def_regular)
2095     return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
2096                                                &eh->dyn_relocs,
2097                                                PLT_ENTRY_SIZE, 4);
2098   else if (htab->elf.dynamic_sections_created
2099            && h->plt.refcount > 0)
2100     {
2101       /* Make sure this symbol is output as a dynamic symbol.
2102          Undefined weak syms won't yet be marked as dynamic.  */
2103       if (h->dynindx == -1
2104           && !h->forced_local)
2105         {
2106           if (! bfd_elf_link_record_dynamic_symbol (info, h))
2107             return FALSE;
2108         }
2109
2110       if (info->shared
2111           || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
2112         {
2113           asection *s = htab->elf.splt;
2114
2115           /* If this is the first .plt entry, make room for the special
2116              first entry.  */
2117           if (s->size == 0)
2118             s->size += PLT_ENTRY_SIZE;
2119
2120           h->plt.offset = s->size;
2121
2122           /* If this symbol is not defined in a regular file, and we are
2123              not generating a shared library, then set the symbol to this
2124              location in the .plt.  This is required to make function
2125              pointers compare as equal between the normal executable and
2126              the shared library.  */
2127           if (! info->shared
2128               && !h->def_regular)
2129             {
2130               h->root.u.def.section = s;
2131               h->root.u.def.value = h->plt.offset;
2132             }
2133
2134           /* Make room for this entry.  */
2135           s->size += PLT_ENTRY_SIZE;
2136
2137           /* We also need to make an entry in the .got.plt section, which
2138              will be placed in the .got section by the linker script.  */
2139           htab->elf.sgotplt->size += 4;
2140
2141           /* We also need to make an entry in the .rel.plt section.  */
2142           htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2143           htab->next_tls_desc_index++;
2144
2145           if (htab->is_vxworks && !info->shared)
2146             {
2147               /* VxWorks has a second set of relocations for each PLT entry
2148                  in executables.  They go in a separate relocation section,
2149                  which is processed by the kernel loader.  */
2150
2151               /* There are two relocations for the initial PLT entry: an
2152                  R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 4 and an
2153                  R_386_32 relocation for _GLOBAL_OFFSET_TABLE_ + 8.  */
2154
2155               if (h->plt.offset == PLT_ENTRY_SIZE)
2156                 htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2157
2158               /* There are two extra relocations for each subsequent PLT entry:
2159                  an R_386_32 relocation for the GOT entry, and an R_386_32
2160                  relocation for the PLT entry.  */
2161
2162               htab->srelplt2->size += (sizeof (Elf32_External_Rel) * 2);
2163             }
2164         }
2165       else
2166         {
2167           h->plt.offset = (bfd_vma) -1;
2168           h->needs_plt = 0;
2169         }
2170     }
2171   else
2172     {
2173       h->plt.offset = (bfd_vma) -1;
2174       h->needs_plt = 0;
2175     }
2176
2177   eh->tlsdesc_got = (bfd_vma) -1;
2178
2179   /* If R_386_TLS_{IE_32,IE,GOTIE} symbol is now local to the binary,
2180      make it a R_386_TLS_LE_32 requiring no TLS entry.  */
2181   if (h->got.refcount > 0
2182       && info->executable
2183       && h->dynindx == -1
2184       && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE))
2185     h->got.offset = (bfd_vma) -1;
2186   else if (h->got.refcount > 0)
2187     {
2188       asection *s;
2189       bfd_boolean dyn;
2190       int tls_type = elf_i386_hash_entry(h)->tls_type;
2191
2192       /* Make sure this symbol is output as a dynamic symbol.
2193          Undefined weak syms won't yet be marked as dynamic.  */
2194       if (h->dynindx == -1
2195           && !h->forced_local)
2196         {
2197           if (! bfd_elf_link_record_dynamic_symbol (info, h))
2198             return FALSE;
2199         }
2200
2201       s = htab->elf.sgot;
2202       if (GOT_TLS_GDESC_P (tls_type))
2203         {
2204           eh->tlsdesc_got = htab->elf.sgotplt->size
2205             - elf_i386_compute_jump_table_size (htab);
2206           htab->elf.sgotplt->size += 8;
2207           h->got.offset = (bfd_vma) -2;
2208         }
2209       if (! GOT_TLS_GDESC_P (tls_type)
2210           || GOT_TLS_GD_P (tls_type))
2211         {
2212           h->got.offset = s->size;
2213           s->size += 4;
2214           /* R_386_TLS_GD needs 2 consecutive GOT slots.  */
2215           if (GOT_TLS_GD_P (tls_type) || tls_type == GOT_TLS_IE_BOTH)
2216             s->size += 4;
2217         }
2218       dyn = htab->elf.dynamic_sections_created;
2219       /* R_386_TLS_IE_32 needs one dynamic relocation,
2220          R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
2221          (but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
2222          need two), R_386_TLS_GD needs one if local symbol and two if
2223          global.  */
2224       if (tls_type == GOT_TLS_IE_BOTH)
2225         htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
2226       else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
2227                || (tls_type & GOT_TLS_IE))
2228         htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
2229       else if (GOT_TLS_GD_P (tls_type))
2230         htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
2231       else if (! GOT_TLS_GDESC_P (tls_type)
2232                && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2233                    || h->root.type != bfd_link_hash_undefweak)
2234                && (info->shared
2235                    || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
2236         htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
2237       if (GOT_TLS_GDESC_P (tls_type))
2238         htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2239     }
2240   else
2241     h->got.offset = (bfd_vma) -1;
2242
2243   if (eh->dyn_relocs == NULL)
2244     return TRUE;
2245
2246   /* In the shared -Bsymbolic case, discard space allocated for
2247      dynamic pc-relative relocs against symbols which turn out to be
2248      defined in regular objects.  For the normal shared case, discard
2249      space for pc-relative relocs that have become local due to symbol
2250      visibility changes.  */
2251
2252   if (info->shared)
2253     {
2254       /* The only reloc that uses pc_count is R_386_PC32, which will
2255          appear on a call or on something like ".long foo - .".  We
2256          want calls to protected symbols to resolve directly to the
2257          function rather than going via the plt.  If people want
2258          function pointer comparisons to work as expected then they
2259          should avoid writing assembly like ".long foo - .".  */
2260       if (SYMBOL_CALLS_LOCAL (info, h))
2261         {
2262           struct elf_dyn_relocs **pp;
2263
2264           for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2265             {
2266               p->count -= p->pc_count;
2267               p->pc_count = 0;
2268               if (p->count == 0)
2269                 *pp = p->next;
2270               else
2271                 pp = &p->next;
2272             }
2273         }
2274
2275       if (htab->is_vxworks)
2276         {
2277           struct elf_dyn_relocs **pp;
2278           for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
2279             {
2280               if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
2281                 *pp = p->next;
2282               else
2283                 pp = &p->next;
2284             }
2285         }
2286
2287       /* Also discard relocs on undefined weak syms with non-default
2288          visibility.  */
2289       if (eh->dyn_relocs != NULL
2290           && h->root.type == bfd_link_hash_undefweak)
2291         {
2292           if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2293             eh->dyn_relocs = NULL;
2294
2295           /* Make sure undefined weak symbols are output as a dynamic
2296              symbol in PIEs.  */
2297           else if (h->dynindx == -1
2298                    && !h->forced_local)
2299             {
2300               if (! bfd_elf_link_record_dynamic_symbol (info, h))
2301                 return FALSE;
2302             }
2303         }
2304     }
2305   else if (ELIMINATE_COPY_RELOCS)
2306     {
2307       /* For the non-shared case, discard space for relocs against
2308          symbols which turn out to need copy relocs or are not
2309          dynamic.  */
2310
2311       if (!h->non_got_ref
2312           && ((h->def_dynamic
2313                && !h->def_regular)
2314               || (htab->elf.dynamic_sections_created
2315                   && (h->root.type == bfd_link_hash_undefweak
2316                       || h->root.type == bfd_link_hash_undefined))))
2317         {
2318           /* Make sure this symbol is output as a dynamic symbol.
2319              Undefined weak syms won't yet be marked as dynamic.  */
2320           if (h->dynindx == -1
2321               && !h->forced_local)
2322             {
2323               if (! bfd_elf_link_record_dynamic_symbol (info, h))
2324                 return FALSE;
2325             }
2326
2327           /* If that succeeded, we know we'll be keeping all the
2328              relocs.  */
2329           if (h->dynindx != -1)
2330             goto keep;
2331         }
2332
2333       eh->dyn_relocs = NULL;
2334
2335     keep: ;
2336     }
2337
2338   /* Finally, allocate space.  */
2339   for (p = eh->dyn_relocs; p != NULL; p = p->next)
2340     {
2341       asection *sreloc;
2342
2343       sreloc = elf_section_data (p->sec)->sreloc;
2344
2345       BFD_ASSERT (sreloc != NULL);
2346       sreloc->size += p->count * sizeof (Elf32_External_Rel);
2347     }
2348
2349   return TRUE;
2350 }
2351
2352 /* Allocate space in .plt, .got and associated reloc sections for
2353    local dynamic relocs.  */
2354
2355 static bfd_boolean
2356 elf_i386_allocate_local_dynrelocs (void **slot, void *inf)
2357 {
2358   struct elf_link_hash_entry *h
2359     = (struct elf_link_hash_entry *) *slot;
2360
2361   if (h->type != STT_GNU_IFUNC
2362       || !h->def_regular
2363       || !h->ref_regular
2364       || !h->forced_local
2365       || h->root.type != bfd_link_hash_defined)
2366     abort ();
2367
2368   return elf_i386_allocate_dynrelocs (h, inf);
2369 }
2370
2371 /* Find any dynamic relocs that apply to read-only sections.  */
2372
2373 static bfd_boolean
2374 elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
2375 {
2376   struct elf_i386_link_hash_entry *eh;
2377   struct elf_dyn_relocs *p;
2378
2379   if (h->root.type == bfd_link_hash_warning)
2380     h = (struct elf_link_hash_entry *) h->root.u.i.link;
2381
2382   eh = (struct elf_i386_link_hash_entry *) h;
2383   for (p = eh->dyn_relocs; p != NULL; p = p->next)
2384     {
2385       asection *s = p->sec->output_section;
2386
2387       if (s != NULL && (s->flags & SEC_READONLY) != 0)
2388         {
2389           struct bfd_link_info *info = (struct bfd_link_info *) inf;
2390
2391           info->flags |= DF_TEXTREL;
2392
2393           /* Not an error, just cut short the traversal.  */
2394           return FALSE;
2395         }
2396     }
2397   return TRUE;
2398 }
2399
2400 /* Set the sizes of the dynamic sections.  */
2401
2402 static bfd_boolean
2403 elf_i386_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2404                                 struct bfd_link_info *info)
2405 {
2406   struct elf_i386_link_hash_table *htab;
2407   bfd *dynobj;
2408   asection *s;
2409   bfd_boolean relocs;
2410   bfd *ibfd;
2411
2412   htab = elf_i386_hash_table (info);
2413   if (htab == NULL)
2414     return FALSE;
2415   dynobj = htab->elf.dynobj;
2416   if (dynobj == NULL)
2417     abort ();
2418
2419   if (htab->elf.dynamic_sections_created)
2420     {
2421       /* Set the contents of the .interp section to the interpreter.  */
2422       if (info->executable)
2423         {
2424           s = bfd_get_section_by_name (dynobj, ".interp");
2425           if (s == NULL)
2426             abort ();
2427           s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2428           s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2429         }
2430     }
2431
2432   /* Set up .got offsets for local syms, and space for local dynamic
2433      relocs.  */
2434   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2435     {
2436       bfd_signed_vma *local_got;
2437       bfd_signed_vma *end_local_got;
2438       char *local_tls_type;
2439       bfd_vma *local_tlsdesc_gotent;
2440       bfd_size_type locsymcount;
2441       Elf_Internal_Shdr *symtab_hdr;
2442       asection *srel;
2443
2444       if (! is_i386_elf (ibfd))
2445         continue;
2446
2447       for (s = ibfd->sections; s != NULL; s = s->next)
2448         {
2449           struct elf_dyn_relocs *p;
2450
2451           for (p = ((struct elf_dyn_relocs *)
2452                      elf_section_data (s)->local_dynrel);
2453                p != NULL;
2454                p = p->next)
2455             {
2456               if (!bfd_is_abs_section (p->sec)
2457                   && bfd_is_abs_section (p->sec->output_section))
2458                 {
2459                   /* Input section has been discarded, either because
2460                      it is a copy of a linkonce section or due to
2461                      linker script /DISCARD/, so we'll be discarding
2462                      the relocs too.  */
2463                 }
2464               else if (htab->is_vxworks
2465                        && strcmp (p->sec->output_section->name,
2466                                   ".tls_vars") == 0)
2467                 {
2468                   /* Relocations in vxworks .tls_vars sections are
2469                      handled specially by the loader.  */
2470                 }
2471               else if (p->count != 0)
2472                 {
2473                   srel = elf_section_data (p->sec)->sreloc;
2474                   srel->size += p->count * sizeof (Elf32_External_Rel);
2475                   if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2476                     info->flags |= DF_TEXTREL;
2477                 }
2478             }
2479         }
2480
2481       local_got = elf_local_got_refcounts (ibfd);
2482       if (!local_got)
2483         continue;
2484
2485       symtab_hdr = &elf_symtab_hdr (ibfd);
2486       locsymcount = symtab_hdr->sh_info;
2487       end_local_got = local_got + locsymcount;
2488       local_tls_type = elf_i386_local_got_tls_type (ibfd);
2489       local_tlsdesc_gotent = elf_i386_local_tlsdesc_gotent (ibfd);
2490       s = htab->elf.sgot;
2491       srel = htab->elf.srelgot;
2492       for (; local_got < end_local_got;
2493            ++local_got, ++local_tls_type, ++local_tlsdesc_gotent)
2494         {
2495           *local_tlsdesc_gotent = (bfd_vma) -1;
2496           if (*local_got > 0)
2497             {
2498               if (GOT_TLS_GDESC_P (*local_tls_type))
2499                 {
2500                   *local_tlsdesc_gotent = htab->elf.sgotplt->size
2501                     - elf_i386_compute_jump_table_size (htab);
2502                   htab->elf.sgotplt->size += 8;
2503                   *local_got = (bfd_vma) -2;
2504                 }
2505               if (! GOT_TLS_GDESC_P (*local_tls_type)
2506                   || GOT_TLS_GD_P (*local_tls_type))
2507                 {
2508                   *local_got = s->size;
2509                   s->size += 4;
2510                   if (GOT_TLS_GD_P (*local_tls_type)
2511                       || *local_tls_type == GOT_TLS_IE_BOTH)
2512                     s->size += 4;
2513                 }
2514               if (info->shared
2515                   || GOT_TLS_GD_ANY_P (*local_tls_type)
2516                   || (*local_tls_type & GOT_TLS_IE))
2517                 {
2518                   if (*local_tls_type == GOT_TLS_IE_BOTH)
2519                     srel->size += 2 * sizeof (Elf32_External_Rel);
2520                   else if (GOT_TLS_GD_P (*local_tls_type)
2521                            || ! GOT_TLS_GDESC_P (*local_tls_type))
2522                     srel->size += sizeof (Elf32_External_Rel);
2523                   if (GOT_TLS_GDESC_P (*local_tls_type))
2524                     htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
2525                 }
2526             }
2527           else
2528             *local_got = (bfd_vma) -1;
2529         }
2530     }
2531
2532   if (htab->tls_ldm_got.refcount > 0)
2533     {
2534       /* Allocate 2 got entries and 1 dynamic reloc for R_386_TLS_LDM
2535          relocs.  */
2536       htab->tls_ldm_got.offset = htab->elf.sgot->size;
2537       htab->elf.sgot->size += 8;
2538       htab->elf.srelgot->size += sizeof (Elf32_External_Rel);
2539     }
2540   else
2541     htab->tls_ldm_got.offset = -1;
2542
2543   /* Allocate global sym .plt and .got entries, and space for global
2544      sym dynamic relocs.  */
2545   elf_link_hash_traverse (&htab->elf, elf_i386_allocate_dynrelocs, info);
2546
2547   /* Allocate .plt and .got entries, and space for local symbols.  */
2548   htab_traverse (htab->loc_hash_table,
2549                  elf_i386_allocate_local_dynrelocs,
2550                  info);
2551
2552   /* For every jump slot reserved in the sgotplt, reloc_count is
2553      incremented.  However, when we reserve space for TLS descriptors,
2554      it's not incremented, so in order to compute the space reserved
2555      for them, it suffices to multiply the reloc count by the jump
2556      slot size.  */
2557   if (htab->elf.srelplt)
2558     htab->sgotplt_jump_table_size = htab->next_tls_desc_index * 4;
2559
2560   if (htab->elf.sgotplt)
2561     {
2562       /* Don't allocate .got.plt section if there are no GOT nor PLT
2563          entries.  */
2564       if ((htab->elf.sgotplt->size
2565            == get_elf_backend_data (output_bfd)->got_header_size)
2566           && (htab->elf.splt == NULL
2567               || htab->elf.splt->size == 0)
2568           && (htab->elf.sgot == NULL
2569               || htab->elf.sgot->size == 0)
2570           && (htab->elf.iplt == NULL
2571               || htab->elf.iplt->size == 0)
2572           && (htab->elf.igotplt == NULL
2573               || htab->elf.igotplt->size == 0))
2574         htab->elf.sgotplt->size = 0;
2575     }
2576
2577   /* We now have determined the sizes of the various dynamic sections.
2578      Allocate memory for them.  */
2579   relocs = FALSE;
2580   for (s = dynobj->sections; s != NULL; s = s->next)
2581     {
2582       bfd_boolean strip_section = TRUE;
2583
2584       if ((s->flags & SEC_LINKER_CREATED) == 0)
2585         continue;
2586
2587       if (s == htab->elf.splt
2588           || s == htab->elf.sgot
2589           || s == htab->elf.sgotplt
2590           || s == htab->elf.iplt
2591           || s == htab->elf.igotplt
2592           || s == htab->sdynbss)
2593         {
2594           /* Strip this section if we don't need it; see the
2595              comment below.  */
2596           /* We'd like to strip these sections if they aren't needed, but if
2597              we've exported dynamic symbols from them we must leave them.
2598              It's too late to tell BFD to get rid of the symbols.  */
2599
2600           if (htab->elf.hplt != NULL)
2601             strip_section = FALSE;
2602         }
2603       else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rel"))
2604         {
2605           if (s->size != 0
2606               && s != htab->elf.srelplt
2607               && s != htab->srelplt2)
2608             relocs = TRUE;
2609
2610           /* We use the reloc_count field as a counter if we need
2611              to copy relocs into the output file.  */
2612           s->reloc_count = 0;
2613         }
2614       else
2615         {
2616           /* It's not one of our sections, so don't allocate space.  */
2617           continue;
2618         }
2619
2620       if (s->size == 0)
2621         {
2622           /* If we don't need this section, strip it from the
2623              output file.  This is mostly to handle .rel.bss and
2624              .rel.plt.  We must create both sections in
2625              create_dynamic_sections, because they must be created
2626              before the linker maps input sections to output
2627              sections.  The linker does that before
2628              adjust_dynamic_symbol is called, and it is that
2629              function which decides whether anything needs to go
2630              into these sections.  */
2631           if (strip_section)
2632             s->flags |= SEC_EXCLUDE;
2633           continue;
2634         }
2635
2636       if ((s->flags & SEC_HAS_CONTENTS) == 0)
2637         continue;
2638
2639       /* Allocate memory for the section contents.  We use bfd_zalloc
2640          here in case unused entries are not reclaimed before the
2641          section's contents are written out.  This should not happen,
2642          but this way if it does, we get a R_386_NONE reloc instead
2643          of garbage.  */
2644       s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
2645       if (s->contents == NULL)
2646         return FALSE;
2647     }
2648
2649   if (htab->elf.dynamic_sections_created)
2650     {
2651       /* Add some entries to the .dynamic section.  We fill in the
2652          values later, in elf_i386_finish_dynamic_sections, but we
2653          must add the entries now so that we get the correct size for
2654          the .dynamic section.  The DT_DEBUG entry is filled in by the
2655          dynamic linker and used by the debugger.  */
2656 #define add_dynamic_entry(TAG, VAL) \
2657   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2658
2659       if (info->executable)
2660         {
2661           if (!add_dynamic_entry (DT_DEBUG, 0))
2662             return FALSE;
2663         }
2664
2665       if (htab->elf.splt->size != 0)
2666         {
2667           if (!add_dynamic_entry (DT_PLTGOT, 0)
2668               || !add_dynamic_entry (DT_PLTRELSZ, 0)
2669               || !add_dynamic_entry (DT_PLTREL, DT_REL)
2670               || !add_dynamic_entry (DT_JMPREL, 0))
2671             return FALSE;
2672         }
2673
2674       if (relocs)
2675         {
2676           if (!add_dynamic_entry (DT_REL, 0)
2677               || !add_dynamic_entry (DT_RELSZ, 0)
2678               || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
2679             return FALSE;
2680
2681           /* If any dynamic relocs apply to a read-only section,
2682              then we need a DT_TEXTREL entry.  */
2683           if ((info->flags & DF_TEXTREL) == 0)
2684             elf_link_hash_traverse (&htab->elf,
2685                                     elf_i386_readonly_dynrelocs, info);
2686
2687           if ((info->flags & DF_TEXTREL) != 0)
2688             {
2689               if (!add_dynamic_entry (DT_TEXTREL, 0))
2690                 return FALSE;
2691             }
2692         }
2693       if (htab->is_vxworks
2694           && !elf_vxworks_add_dynamic_entries (output_bfd, info))
2695         return FALSE;
2696     }
2697 #undef add_dynamic_entry
2698
2699   return TRUE;
2700 }
2701
2702 static bfd_boolean
2703 elf_i386_always_size_sections (bfd *output_bfd,
2704                                struct bfd_link_info *info)
2705 {
2706   asection *tls_sec = elf_hash_table (info)->tls_sec;
2707
2708   if (tls_sec)
2709     {
2710       struct elf_link_hash_entry *tlsbase;
2711
2712       tlsbase = elf_link_hash_lookup (elf_hash_table (info),
2713                                       "_TLS_MODULE_BASE_",
2714                                       FALSE, FALSE, FALSE);
2715
2716       if (tlsbase && tlsbase->type == STT_TLS)
2717         {
2718           struct elf_i386_link_hash_table *htab;
2719           struct bfd_link_hash_entry *bh = NULL;
2720           const struct elf_backend_data *bed
2721             = get_elf_backend_data (output_bfd);
2722
2723           htab = elf_i386_hash_table (info);
2724           if (htab == NULL)
2725             return FALSE;
2726
2727           if (!(_bfd_generic_link_add_one_symbol
2728                 (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
2729                  tls_sec, 0, NULL, FALSE,
2730                  bed->collect, &bh)))
2731             return FALSE;
2732
2733           htab->tls_module_base = bh;
2734
2735           tlsbase = (struct elf_link_hash_entry *)bh;
2736           tlsbase->def_regular = 1;
2737           tlsbase->other = STV_HIDDEN;
2738           (*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
2739         }
2740     }
2741
2742   return TRUE;
2743 }
2744
2745 /* Set the correct type for an x86 ELF section.  We do this by the
2746    section name, which is a hack, but ought to work.  */
2747
2748 static bfd_boolean
2749 elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
2750                         Elf_Internal_Shdr *hdr,
2751                         asection *sec)
2752 {
2753   const char *name;
2754
2755   name = bfd_get_section_name (abfd, sec);
2756
2757   /* This is an ugly, but unfortunately necessary hack that is
2758      needed when producing EFI binaries on x86. It tells
2759      elf.c:elf_fake_sections() not to consider ".reloc" as a section
2760      containing ELF relocation info.  We need this hack in order to
2761      be able to generate ELF binaries that can be translated into
2762      EFI applications (which are essentially COFF objects).  Those
2763      files contain a COFF ".reloc" section inside an ELFNN object,
2764      which would normally cause BFD to segfault because it would
2765      attempt to interpret this section as containing relocation
2766      entries for section "oc".  With this hack enabled, ".reloc"
2767      will be treated as a normal data section, which will avoid the
2768      segfault.  However, you won't be able to create an ELFNN binary
2769      with a section named "oc" that needs relocations, but that's
2770      the kind of ugly side-effects you get when detecting section
2771      types based on their names...  In practice, this limitation is
2772      unlikely to bite.  */
2773   if (strcmp (name, ".reloc") == 0)
2774     hdr->sh_type = SHT_PROGBITS;
2775
2776   return TRUE;
2777 }
2778
2779 /* _TLS_MODULE_BASE_ needs to be treated especially when linking
2780    executables.  Rather than setting it to the beginning of the TLS
2781    section, we have to set it to the end.    This function may be called
2782    multiple times, it is idempotent.  */
2783
2784 static void
2785 elf_i386_set_tls_module_base (struct bfd_link_info *info)
2786 {
2787   struct elf_i386_link_hash_table *htab;
2788   struct bfd_link_hash_entry *base;
2789
2790   if (!info->executable)
2791     return;
2792
2793   htab = elf_i386_hash_table (info);
2794   if (htab == NULL)
2795     return;
2796
2797   base = htab->tls_module_base;
2798   if (base == NULL)
2799     return;
2800
2801   base->u.def.value = htab->elf.tls_size;
2802 }
2803
2804 /* Return the base VMA address which should be subtracted from real addresses
2805    when resolving @dtpoff relocation.
2806    This is PT_TLS segment p_vaddr.  */
2807
2808 static bfd_vma
2809 elf_i386_dtpoff_base (struct bfd_link_info *info)
2810 {
2811   /* If tls_sec is NULL, we should have signalled an error already.  */
2812   if (elf_hash_table (info)->tls_sec == NULL)
2813     return 0;
2814   return elf_hash_table (info)->tls_sec->vma;
2815 }
2816
2817 /* Return the relocation value for @tpoff relocation
2818    if STT_TLS virtual address is ADDRESS.  */
2819
2820 static bfd_vma
2821 elf_i386_tpoff (struct bfd_link_info *info, bfd_vma address)
2822 {
2823   struct elf_link_hash_table *htab = elf_hash_table (info);
2824
2825   /* If tls_sec is NULL, we should have signalled an error already.  */
2826   if (htab->tls_sec == NULL)
2827     return 0;
2828   return htab->tls_size + htab->tls_sec->vma - address;
2829 }
2830
2831 /* Relocate an i386 ELF section.  */
2832
2833 static bfd_boolean
2834 elf_i386_relocate_section (bfd *output_bfd,
2835                            struct bfd_link_info *info,
2836                            bfd *input_bfd,
2837                            asection *input_section,
2838                            bfd_byte *contents,
2839                            Elf_Internal_Rela *relocs,
2840                            Elf_Internal_Sym *local_syms,
2841                            asection **local_sections)
2842 {
2843   struct elf_i386_link_hash_table *htab;
2844   Elf_Internal_Shdr *symtab_hdr;
2845   struct elf_link_hash_entry **sym_hashes;
2846   bfd_vma *local_got_offsets;
2847   bfd_vma *local_tlsdesc_gotents;
2848   Elf_Internal_Rela *rel;
2849   Elf_Internal_Rela *relend;
2850   bfd_boolean is_vxworks_tls;
2851
2852   BFD_ASSERT (is_i386_elf (input_bfd));
2853
2854   htab = elf_i386_hash_table (info);
2855   if (htab == NULL)
2856     return FALSE;
2857   symtab_hdr = &elf_symtab_hdr (input_bfd);
2858   sym_hashes = elf_sym_hashes (input_bfd);
2859   local_got_offsets = elf_local_got_offsets (input_bfd);
2860   local_tlsdesc_gotents = elf_i386_local_tlsdesc_gotent (input_bfd);
2861   /* We have to handle relocations in vxworks .tls_vars sections
2862      specially, because the dynamic loader is 'weird'.  */
2863   is_vxworks_tls = (htab->is_vxworks && info->shared
2864                     && !strcmp (input_section->output_section->name,
2865                                 ".tls_vars"));
2866
2867   elf_i386_set_tls_module_base (info);
2868
2869   rel = relocs;
2870   relend = relocs + input_section->reloc_count;
2871   for (; rel < relend; rel++)
2872     {
2873       unsigned int r_type;
2874       reloc_howto_type *howto;
2875       unsigned long r_symndx;
2876       struct elf_link_hash_entry *h;
2877       Elf_Internal_Sym *sym;
2878       asection *sec;
2879       bfd_vma off, offplt;
2880       bfd_vma relocation;
2881       bfd_boolean unresolved_reloc;
2882       bfd_reloc_status_type r;
2883       unsigned int indx;
2884       int tls_type;
2885
2886       r_type = ELF32_R_TYPE (rel->r_info);
2887       if (r_type == R_386_GNU_VTINHERIT
2888           || r_type == R_386_GNU_VTENTRY)
2889         continue;
2890
2891       if ((indx = r_type) >= R_386_standard
2892           && ((indx = r_type - R_386_ext_offset) - R_386_standard
2893               >= R_386_ext - R_386_standard)
2894           && ((indx = r_type - R_386_tls_offset) - R_386_ext
2895               >= R_386_irelative - R_386_ext))
2896         {
2897           (*_bfd_error_handler)
2898             (_("%B: unrecognized relocation (0x%x) in section `%A'"),
2899              input_bfd, input_section, r_type);
2900           bfd_set_error (bfd_error_bad_value);
2901           return FALSE;
2902         }
2903       howto = elf_howto_table + indx;
2904
2905       r_symndx = ELF32_R_SYM (rel->r_info);
2906       h = NULL;
2907       sym = NULL;
2908       sec = NULL;
2909       unresolved_reloc = FALSE;
2910       if (r_symndx < symtab_hdr->sh_info)
2911         {
2912           sym = local_syms + r_symndx;
2913           sec = local_sections[r_symndx];
2914           relocation = (sec->output_section->vma
2915                         + sec->output_offset
2916                         + sym->st_value);
2917
2918           if (ELF_ST_TYPE (sym->st_info) == STT_SECTION
2919               && ((sec->flags & SEC_MERGE) != 0
2920                   || (info->relocatable
2921                       && sec->output_offset != 0)))
2922             {
2923               bfd_vma addend;
2924               bfd_byte *where = contents + rel->r_offset;
2925
2926               switch (howto->size)
2927                 {
2928                 case 0:
2929                   addend = bfd_get_8 (input_bfd, where);
2930                   if (howto->pc_relative)
2931                     {
2932                       addend = (addend ^ 0x80) - 0x80;
2933                       addend += 1;
2934                     }
2935                   break;
2936                 case 1:
2937                   addend = bfd_get_16 (input_bfd, where);
2938                   if (howto->pc_relative)
2939                     {
2940                       addend = (addend ^ 0x8000) - 0x8000;
2941                       addend += 2;
2942                     }
2943                   break;
2944                 case 2:
2945                   addend = bfd_get_32 (input_bfd, where);
2946                   if (howto->pc_relative)
2947                     {
2948                       addend = (addend ^ 0x80000000) - 0x80000000;
2949                       addend += 4;
2950                     }
2951                   break;
2952                 default:
2953                   abort ();
2954                 }
2955
2956               if (info->relocatable)
2957                 addend += sec->output_offset;
2958               else
2959                 {
2960                   asection *msec = sec;
2961                   addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec,
2962                                                    addend);
2963                   addend -= relocation;
2964                   addend += msec->output_section->vma + msec->output_offset;
2965                 }
2966
2967               switch (howto->size)
2968                 {
2969                 case 0:
2970                   /* FIXME: overflow checks.  */
2971                   if (howto->pc_relative)
2972                     addend -= 1;
2973                   bfd_put_8 (input_bfd, addend, where);
2974                   break;
2975                 case 1:
2976                   if (howto->pc_relative)
2977                     addend -= 2;
2978                   bfd_put_16 (input_bfd, addend, where);
2979                   break;
2980                 case 2:
2981                   if (howto->pc_relative)
2982                     addend -= 4;
2983                   bfd_put_32 (input_bfd, addend, where);
2984                   break;
2985                 }
2986             }
2987           else if (!info->relocatable
2988                    && ELF32_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
2989             {
2990               /* Relocate against local STT_GNU_IFUNC symbol.  */
2991               h = elf_i386_get_local_sym_hash (htab, input_bfd, rel,
2992                                                FALSE);
2993               if (h == NULL)
2994                 abort ();
2995
2996               /* Set STT_GNU_IFUNC symbol value.  */
2997               h->root.u.def.value = sym->st_value;
2998               h->root.u.def.section = sec;
2999             }
3000         }
3001       else
3002         {
3003           bfd_boolean warned ATTRIBUTE_UNUSED;
3004
3005           RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3006                                    r_symndx, symtab_hdr, sym_hashes,
3007                                    h, sec, relocation,
3008                                    unresolved_reloc, warned);
3009         }
3010
3011       if (sec != NULL && elf_discarded_section (sec))
3012         RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
3013                                          rel, relend, howto, contents);
3014
3015       if (info->relocatable)
3016         continue;
3017
3018       /* Since STT_GNU_IFUNC symbol must go through PLT, we handle
3019          it here if it is defined in a non-shared object.  */
3020       if (h != NULL
3021           && h->type == STT_GNU_IFUNC
3022           && h->def_regular)
3023         {
3024           asection *plt, *gotplt, *base_got;
3025           bfd_vma plt_index;
3026           const char *name;
3027
3028           if ((input_section->flags & SEC_ALLOC) == 0
3029               || h->plt.offset == (bfd_vma) -1)
3030             abort ();
3031
3032           /* STT_GNU_IFUNC symbol must go through PLT.  */
3033           if (htab->elf.splt != NULL)
3034             {
3035               plt = htab->elf.splt;
3036               gotplt = htab->elf.sgotplt;
3037             }
3038           else
3039             {
3040               plt = htab->elf.iplt;
3041               gotplt = htab->elf.igotplt;
3042             }
3043
3044           relocation = (plt->output_section->vma
3045                         + plt->output_offset + h->plt.offset);
3046
3047           switch (r_type)
3048             {
3049             default:
3050               if (h->root.root.string)
3051                 name = h->root.root.string;
3052               else
3053                 name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym,
3054                                          NULL);
3055               (*_bfd_error_handler)
3056                 (_("%B: relocation %s against STT_GNU_IFUNC "
3057                    "symbol `%s' isn't handled by %s"), input_bfd,
3058                  elf_howto_table[r_type].name,
3059                  name, __FUNCTION__);
3060               bfd_set_error (bfd_error_bad_value);
3061               return FALSE;
3062
3063             case R_386_32:
3064               /* Generate dynamic relcoation only when there is a
3065                  non-GOF reference in a shared object.  */
3066               if (info->shared && h->non_got_ref)
3067                 {
3068                   Elf_Internal_Rela outrel;
3069                   bfd_byte *loc;
3070                   asection *sreloc;
3071                   bfd_vma offset;
3072
3073                   /* Need a dynamic relocation to get the real function
3074                      adddress.  */
3075                   offset = _bfd_elf_section_offset (output_bfd,
3076                                                     info,
3077                                                     input_section,
3078                                                     rel->r_offset);
3079                   if (offset == (bfd_vma) -1
3080                       || offset == (bfd_vma) -2)
3081                     abort ();
3082
3083                   outrel.r_offset = (input_section->output_section->vma
3084                                      + input_section->output_offset
3085                                      + offset);
3086
3087                   if (h->dynindx == -1
3088                       || h->forced_local
3089                       || info->executable)
3090                     {
3091                       /* This symbol is resolved locally.  */
3092                       outrel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
3093                       bfd_put_32 (output_bfd,
3094                                   (h->root.u.def.value
3095                                    + h->root.u.def.section->output_section->vma
3096                                    + h->root.u.def.section->output_offset),
3097                                   contents + offset);
3098                     }
3099                   else
3100                     outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3101
3102                   sreloc = htab->elf.irelifunc;
3103                   loc = sreloc->contents;
3104                   loc += (sreloc->reloc_count++
3105                           * sizeof (Elf32_External_Rel));
3106                   bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3107
3108                   /* If this reloc is against an external symbol, we
3109                      do not want to fiddle with the addend.  Otherwise,
3110                      we need to include the symbol value so that it
3111                      becomes an addend for the dynamic reloc.  For an
3112                      internal symbol, we have updated addend.  */
3113                   continue;
3114                 }
3115
3116             case R_386_PC32:
3117             case R_386_PLT32:
3118               goto do_relocation;
3119
3120             case R_386_GOT32:
3121               base_got = htab->elf.sgot;
3122               off = h->got.offset;
3123
3124               if (base_got == NULL)
3125                 abort ();
3126
3127               if (off == (bfd_vma) -1)
3128                 {
3129                   /* We can't use h->got.offset here to save state, or
3130                      even just remember the offset, as finish_dynamic_symbol
3131                      would use that as offset into .got.  */
3132
3133                   if (htab->elf.splt != NULL)
3134                     {
3135                       plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3136                       off = (plt_index + 3) * 4;
3137                       base_got = htab->elf.sgotplt;
3138                     }
3139                   else
3140                     {
3141                       plt_index = h->plt.offset / PLT_ENTRY_SIZE;
3142                       off = plt_index * 4;
3143                       base_got = htab->elf.igotplt;
3144                     }
3145
3146                   if (h->dynindx == -1
3147                       || h->forced_local
3148                       || info->symbolic)
3149                     {
3150                       /* This references the local defitionion.  We must
3151                          initialize this entry in the global offset table.
3152                          Since the offset must always be a multiple of 8,
3153                          we use the least significant bit to record
3154                          whether we have initialized it already.
3155
3156                          When doing a dynamic link, we create a .rela.got
3157                          relocation entry to initialize the value.  This
3158                          is done in the finish_dynamic_symbol routine.   */
3159                       if ((off & 1) != 0)
3160                         off &= ~1;
3161                       else
3162                         {
3163                           bfd_put_32 (output_bfd, relocation,
3164                                       base_got->contents + off);
3165                           h->got.offset |= 1;
3166                         }
3167                     }
3168
3169                   relocation = off;
3170
3171                   /* Adjust for static executables.  */
3172                   if (htab->elf.splt == NULL)
3173                     relocation += gotplt->output_offset;
3174                 }
3175               else
3176                 {
3177                   relocation = (base_got->output_section->vma
3178                                 + base_got->output_offset + off
3179                                 - gotplt->output_section->vma
3180                                 - gotplt->output_offset);
3181                   /* Adjust for static executables.  */
3182                   if (htab->elf.splt == NULL)
3183                     relocation += gotplt->output_offset;
3184                 }
3185
3186               goto do_relocation;
3187
3188             case R_386_GOTOFF:
3189               relocation -= (gotplt->output_section->vma
3190                              + gotplt->output_offset);
3191               goto do_relocation;
3192             }
3193         }
3194
3195       switch (r_type)
3196         {
3197         case R_386_GOT32:
3198           /* Relocation is to the entry for this symbol in the global
3199              offset table.  */
3200           if (htab->elf.sgot == NULL)
3201             abort ();
3202
3203           if (h != NULL)
3204             {
3205               bfd_boolean dyn;
3206
3207               off = h->got.offset;
3208               dyn = htab->elf.dynamic_sections_created;
3209               if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3210                   || (info->shared
3211                       && SYMBOL_REFERENCES_LOCAL (info, h))
3212                   || (ELF_ST_VISIBILITY (h->other)
3213                       && h->root.type == bfd_link_hash_undefweak))
3214                 {
3215                   /* This is actually a static link, or it is a
3216                      -Bsymbolic link and the symbol is defined
3217                      locally, or the symbol was forced to be local
3218                      because of a version file.  We must initialize
3219                      this entry in the global offset table.  Since the
3220                      offset must always be a multiple of 4, we use the
3221                      least significant bit to record whether we have
3222                      initialized it already.
3223
3224                      When doing a dynamic link, we create a .rel.got
3225                      relocation entry to initialize the value.  This
3226                      is done in the finish_dynamic_symbol routine.  */
3227                   if ((off & 1) != 0)
3228                     off &= ~1;
3229                   else
3230                     {
3231                       bfd_put_32 (output_bfd, relocation,
3232                                   htab->elf.sgot->contents + off);
3233                       h->got.offset |= 1;
3234                     }
3235                 }
3236               else
3237                 unresolved_reloc = FALSE;
3238             }
3239           else
3240             {
3241               if (local_got_offsets == NULL)
3242                 abort ();
3243
3244               off = local_got_offsets[r_symndx];
3245
3246               /* The offset must always be a multiple of 4.  We use
3247                  the least significant bit to record whether we have
3248                  already generated the necessary reloc.  */
3249               if ((off & 1) != 0)
3250                 off &= ~1;
3251               else
3252                 {
3253                   bfd_put_32 (output_bfd, relocation,
3254                               htab->elf.sgot->contents + off);
3255
3256                   if (info->shared)
3257                     {
3258                       asection *s;
3259                       Elf_Internal_Rela outrel;
3260                       bfd_byte *loc;
3261
3262                       s = htab->elf.srelgot;
3263                       if (s == NULL)
3264                         abort ();
3265
3266                       outrel.r_offset = (htab->elf.sgot->output_section->vma
3267                                          + htab->elf.sgot->output_offset
3268                                          + off);
3269                       outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3270                       loc = s->contents;
3271                       loc += s->reloc_count++ * sizeof (Elf32_External_Rel);
3272                       bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3273                     }
3274
3275                   local_got_offsets[r_symndx] |= 1;
3276                 }
3277             }
3278
3279           if (off >= (bfd_vma) -2)
3280             abort ();
3281
3282           relocation = htab->elf.sgot->output_section->vma
3283                        + htab->elf.sgot->output_offset + off
3284                        - htab->elf.sgotplt->output_section->vma
3285                        - htab->elf.sgotplt->output_offset;
3286           break;
3287
3288         case R_386_GOTOFF:
3289           /* Relocation is relative to the start of the global offset
3290              table.  */
3291
3292           /* Check to make sure it isn't a protected function symbol
3293              for shared library since it may not be local when used
3294              as function address.  We also need to make sure that a
3295              symbol is defined locally.  */
3296           if (info->shared && h)
3297             {
3298               if (!h->def_regular)
3299                 {
3300                   const char *v;
3301
3302                   switch (ELF_ST_VISIBILITY (h->other))
3303                     {
3304                     case STV_HIDDEN:
3305                       v = _("hidden symbol");
3306                       break;
3307                     case STV_INTERNAL:
3308                       v = _("internal symbol");
3309                       break;
3310                     case STV_PROTECTED:
3311                       v = _("protected symbol");
3312                       break;
3313                     default:
3314                       v = _("symbol");
3315                       break;
3316                     }
3317
3318                   (*_bfd_error_handler)
3319                     (_("%B: relocation R_386_GOTOFF against undefined %s `%s' can not be used when making a shared object"),
3320                      input_bfd, v, h->root.root.string);
3321                   bfd_set_error (bfd_error_bad_value);
3322                   return FALSE;
3323                 }
3324               else if (!info->executable
3325                        && h->type == STT_FUNC
3326                        && ELF_ST_VISIBILITY (h->other) == STV_PROTECTED)
3327                 {
3328                   (*_bfd_error_handler)
3329                     (_("%B: relocation R_386_GOTOFF against protected function `%s' can not be used when making a shared object"),
3330                      input_bfd, h->root.root.string);
3331                   bfd_set_error (bfd_error_bad_value);
3332                   return FALSE;
3333                 }
3334             }
3335
3336           /* Note that sgot is not involved in this
3337              calculation.  We always want the start of .got.plt.  If we
3338              defined _GLOBAL_OFFSET_TABLE_ in a different way, as is
3339              permitted by the ABI, we might have to change this
3340              calculation.  */
3341           relocation -= htab->elf.sgotplt->output_section->vma
3342                         + htab->elf.sgotplt->output_offset;
3343           break;
3344
3345         case R_386_GOTPC:
3346           /* Use global offset table as symbol value.  */
3347           relocation = htab->elf.sgotplt->output_section->vma
3348                        + htab->elf.sgotplt->output_offset;
3349           unresolved_reloc = FALSE;
3350           break;
3351
3352         case R_386_PLT32:
3353           /* Relocation is to the entry for this symbol in the
3354              procedure linkage table.  */
3355
3356           /* Resolve a PLT32 reloc against a local symbol directly,
3357              without using the procedure linkage table.  */
3358           if (h == NULL)
3359             break;
3360
3361           if (h->plt.offset == (bfd_vma) -1
3362               || htab->elf.splt == NULL)
3363             {
3364               /* We didn't make a PLT entry for this symbol.  This
3365                  happens when statically linking PIC code, or when
3366                  using -Bsymbolic.  */
3367               break;
3368             }
3369
3370           relocation = (htab->elf.splt->output_section->vma
3371                         + htab->elf.splt->output_offset
3372                         + h->plt.offset);
3373           unresolved_reloc = FALSE;
3374           break;
3375
3376         case R_386_32:
3377         case R_386_PC32:
3378           if ((input_section->flags & SEC_ALLOC) == 0
3379               || is_vxworks_tls)
3380             break;
3381
3382           if ((info->shared
3383                && (h == NULL
3384                    || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3385                    || h->root.type != bfd_link_hash_undefweak)
3386                && (r_type != R_386_PC32
3387                    || !SYMBOL_CALLS_LOCAL (info, h)))
3388               || (ELIMINATE_COPY_RELOCS
3389                   && !info->shared
3390                   && h != NULL
3391                   && h->dynindx != -1
3392                   && !h->non_got_ref
3393                   && ((h->def_dynamic
3394                        && !h->def_regular)
3395                       || h->root.type == bfd_link_hash_undefweak
3396                       || h->root.type == bfd_link_hash_undefined)))
3397             {
3398               Elf_Internal_Rela outrel;
3399               bfd_byte *loc;
3400               bfd_boolean skip, relocate;
3401               asection *sreloc;
3402
3403               /* When generating a shared object, these relocations
3404                  are copied into the output file to be resolved at run
3405                  time.  */
3406
3407               skip = FALSE;
3408               relocate = FALSE;
3409
3410               outrel.r_offset =
3411                 _bfd_elf_section_offset (output_bfd, info, input_section,
3412                                          rel->r_offset);
3413               if (outrel.r_offset == (bfd_vma) -1)
3414                 skip = TRUE;
3415               else if (outrel.r_offset == (bfd_vma) -2)
3416                 skip = TRUE, relocate = TRUE;
3417               outrel.r_offset += (input_section->output_section->vma
3418                                   + input_section->output_offset);
3419
3420               if (skip)
3421                 memset (&outrel, 0, sizeof outrel);
3422               else if (h != NULL
3423                        && h->dynindx != -1
3424                        && (r_type == R_386_PC32
3425                            || !info->shared
3426                            || !SYMBOLIC_BIND (info, h)
3427                            || !h->def_regular))
3428                 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3429               else
3430                 {
3431                   /* This symbol is local, or marked to become local.  */
3432                   relocate = TRUE;
3433                   outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3434                 }
3435
3436               sreloc = elf_section_data (input_section)->sreloc;
3437
3438               BFD_ASSERT (sreloc != NULL && sreloc->contents != NULL);
3439
3440               loc = sreloc->contents;
3441               loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3442
3443               bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3444
3445               /* If this reloc is against an external symbol, we do
3446                  not want to fiddle with the addend.  Otherwise, we
3447                  need to include the symbol value so that it becomes
3448                  an addend for the dynamic reloc.  */
3449               if (! relocate)
3450                 continue;
3451             }
3452           break;
3453
3454         case R_386_TLS_IE:
3455           if (!info->executable)
3456             {
3457               Elf_Internal_Rela outrel;
3458               bfd_byte *loc;
3459               asection *sreloc;
3460
3461               outrel.r_offset = rel->r_offset
3462                                 + input_section->output_section->vma
3463                                 + input_section->output_offset;
3464               outrel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
3465               sreloc = elf_section_data (input_section)->sreloc;
3466               if (sreloc == NULL)
3467                 abort ();
3468               loc = sreloc->contents;
3469               loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3470               bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3471             }
3472           /* Fall through */
3473
3474         case R_386_TLS_GD:
3475         case R_386_TLS_GOTDESC:
3476         case R_386_TLS_DESC_CALL:
3477         case R_386_TLS_IE_32:
3478         case R_386_TLS_GOTIE:
3479           tls_type = GOT_UNKNOWN;
3480           if (h == NULL && local_got_offsets)
3481             tls_type = elf_i386_local_got_tls_type (input_bfd) [r_symndx];
3482           else if (h != NULL)
3483             tls_type = elf_i386_hash_entry(h)->tls_type;
3484           if (tls_type == GOT_TLS_IE)
3485             tls_type = GOT_TLS_IE_NEG;
3486
3487           if (! elf_i386_tls_transition (info, input_bfd,
3488                                          input_section, contents,
3489                                          symtab_hdr, sym_hashes,
3490                                          &r_type, tls_type, rel,
3491                                          relend, h, r_symndx))
3492             return FALSE;
3493
3494           if (r_type == R_386_TLS_LE_32)
3495             {
3496               BFD_ASSERT (! unresolved_reloc);
3497               if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3498                 {
3499                   unsigned int type;
3500                   bfd_vma roff;
3501
3502                   /* GD->LE transition.  */
3503                   type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3504                   if (type == 0x04)
3505                     {
3506                       /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3507                          Change it into:
3508                          movl %gs:0, %eax; subl $foo@tpoff, %eax
3509                          (6 byte form of subl).  */
3510                       memcpy (contents + rel->r_offset - 3,
3511                               "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3512                       roff = rel->r_offset + 5;
3513                     }
3514                   else
3515                     {
3516                       /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3517                          Change it into:
3518                          movl %gs:0, %eax; subl $foo@tpoff, %eax
3519                          (6 byte form of subl).  */
3520                       memcpy (contents + rel->r_offset - 2,
3521                               "\x65\xa1\0\0\0\0\x81\xe8\0\0\0", 12);
3522                       roff = rel->r_offset + 6;
3523                     }
3524                   bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
3525                               contents + roff);
3526                   /* Skip R_386_PC32/R_386_PLT32.  */
3527                   rel++;
3528                   continue;
3529                 }
3530               else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3531                 {
3532                   /* GDesc -> LE transition.
3533                      It's originally something like:
3534                      leal x@tlsdesc(%ebx), %eax
3535
3536                      leal x@ntpoff, %eax
3537
3538                      Registers other than %eax may be set up here.  */
3539
3540                   unsigned int val;
3541                   bfd_vma roff;
3542
3543                   roff = rel->r_offset;
3544                   val = bfd_get_8 (input_bfd, contents + roff - 1);
3545
3546                   /* Now modify the instruction as appropriate.  */
3547                   /* aoliva FIXME: remove the above and xor the byte
3548                      below with 0x86.  */
3549                   bfd_put_8 (output_bfd, val ^ 0x86,
3550                              contents + roff - 1);
3551                   bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
3552                               contents + roff);
3553                   continue;
3554                 }
3555               else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3556                 {
3557                   /* GDesc -> LE transition.
3558                      It's originally:
3559                      call *(%eax)
3560                      Turn it into:
3561                      xchg %ax,%ax  */
3562
3563                   bfd_vma roff;
3564
3565                   roff = rel->r_offset;
3566                   bfd_put_8 (output_bfd, 0x66, contents + roff);
3567                   bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3568                   continue;
3569                 }
3570               else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_IE)
3571                 {
3572                   unsigned int val;
3573
3574                   /* IE->LE transition:
3575                      Originally it can be one of:
3576                      movl foo, %eax
3577                      movl foo, %reg
3578                      addl foo, %reg
3579                      We change it into:
3580                      movl $foo, %eax
3581                      movl $foo, %reg
3582                      addl $foo, %reg.  */
3583                   val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3584                   if (val == 0xa1)
3585                     {
3586                       /* movl foo, %eax.  */
3587                       bfd_put_8 (output_bfd, 0xb8,
3588                                  contents + rel->r_offset - 1);
3589                     }
3590                   else
3591                     {
3592                       unsigned int type;
3593
3594                       type = bfd_get_8 (input_bfd,
3595                                         contents + rel->r_offset - 2);
3596                       switch (type)
3597                         {
3598                         case 0x8b:
3599                           /* movl */
3600                           bfd_put_8 (output_bfd, 0xc7,
3601                                      contents + rel->r_offset - 2);
3602                           bfd_put_8 (output_bfd,
3603                                      0xc0 | ((val >> 3) & 7),
3604                                      contents + rel->r_offset - 1);
3605                           break;
3606                         case 0x03:
3607                           /* addl */
3608                           bfd_put_8 (output_bfd, 0x81,
3609                                      contents + rel->r_offset - 2);
3610                           bfd_put_8 (output_bfd,
3611                                      0xc0 | ((val >> 3) & 7),
3612                                      contents + rel->r_offset - 1);
3613                           break;
3614                         default:
3615                           BFD_FAIL ();
3616                           break;
3617                         }
3618                     }
3619                   bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
3620                               contents + rel->r_offset);
3621                   continue;
3622                 }
3623               else
3624                 {
3625                   unsigned int val, type;
3626
3627                   /* {IE_32,GOTIE}->LE transition:
3628                      Originally it can be one of:
3629                      subl foo(%reg1), %reg2
3630                      movl foo(%reg1), %reg2
3631                      addl foo(%reg1), %reg2
3632                      We change it into:
3633                      subl $foo, %reg2
3634                      movl $foo, %reg2 (6 byte form)
3635                      addl $foo, %reg2.  */
3636                   type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3637                   val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3638                   if (type == 0x8b)
3639                     {
3640                       /* movl */
3641                       bfd_put_8 (output_bfd, 0xc7,
3642                                  contents + rel->r_offset - 2);
3643                       bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3644                                  contents + rel->r_offset - 1);
3645                     }
3646                   else if (type == 0x2b)
3647                     {
3648                       /* subl */
3649                       bfd_put_8 (output_bfd, 0x81,
3650                                  contents + rel->r_offset - 2);
3651                       bfd_put_8 (output_bfd, 0xe8 | ((val >> 3) & 7),
3652                                  contents + rel->r_offset - 1);
3653                     }
3654                   else if (type == 0x03)
3655                     {
3656                       /* addl */
3657                       bfd_put_8 (output_bfd, 0x81,
3658                                  contents + rel->r_offset - 2);
3659                       bfd_put_8 (output_bfd, 0xc0 | ((val >> 3) & 7),
3660                                  contents + rel->r_offset - 1);
3661                     }
3662                   else
3663                     BFD_FAIL ();
3664                   if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTIE)
3665                     bfd_put_32 (output_bfd, -elf_i386_tpoff (info, relocation),
3666                                 contents + rel->r_offset);
3667                   else
3668                     bfd_put_32 (output_bfd, elf_i386_tpoff (info, relocation),
3669                                 contents + rel->r_offset);
3670                   continue;
3671                 }
3672             }
3673
3674           if (htab->elf.sgot == NULL)
3675             abort ();
3676
3677           if (h != NULL)
3678             {
3679               off = h->got.offset;
3680               offplt = elf_i386_hash_entry (h)->tlsdesc_got;
3681             }
3682           else
3683             {
3684               if (local_got_offsets == NULL)
3685                 abort ();
3686
3687               off = local_got_offsets[r_symndx];
3688               offplt = local_tlsdesc_gotents[r_symndx];
3689             }
3690
3691           if ((off & 1) != 0)
3692             off &= ~1;
3693           else
3694             {
3695               Elf_Internal_Rela outrel;
3696               bfd_byte *loc;
3697               int dr_type;
3698               asection *sreloc;
3699
3700               if (htab->elf.srelgot == NULL)
3701                 abort ();
3702
3703               indx = h && h->dynindx != -1 ? h->dynindx : 0;
3704
3705               if (GOT_TLS_GDESC_P (tls_type))
3706                 {
3707                   outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_DESC);
3708                   BFD_ASSERT (htab->sgotplt_jump_table_size + offplt + 8
3709                               <= htab->elf.sgotplt->size);
3710                   outrel.r_offset = (htab->elf.sgotplt->output_section->vma
3711                                      + htab->elf.sgotplt->output_offset
3712                                      + offplt
3713                                      + htab->sgotplt_jump_table_size);
3714                   sreloc = htab->elf.srelplt;
3715                   loc = sreloc->contents;
3716                   loc += (htab->next_tls_desc_index++
3717                           * sizeof (Elf32_External_Rel));
3718                   BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3719                               <= sreloc->contents + sreloc->size);
3720                   bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3721                   if (indx == 0)
3722                     {
3723                       BFD_ASSERT (! unresolved_reloc);
3724                       bfd_put_32 (output_bfd,
3725                                   relocation - elf_i386_dtpoff_base (info),
3726                                   htab->elf.sgotplt->contents + offplt
3727                                   + htab->sgotplt_jump_table_size + 4);
3728                     }
3729                   else
3730                     {
3731                       bfd_put_32 (output_bfd, 0,
3732                                   htab->elf.sgotplt->contents + offplt
3733                                   + htab->sgotplt_jump_table_size + 4);
3734                     }
3735                 }
3736
3737               sreloc = htab->elf.srelgot;
3738
3739               outrel.r_offset = (htab->elf.sgot->output_section->vma
3740                                  + htab->elf.sgot->output_offset + off);
3741
3742               if (GOT_TLS_GD_P (tls_type))
3743                 dr_type = R_386_TLS_DTPMOD32;
3744               else if (GOT_TLS_GDESC_P (tls_type))
3745                 goto dr_done;
3746               else if (tls_type == GOT_TLS_IE_POS)
3747                 dr_type = R_386_TLS_TPOFF;
3748               else
3749                 dr_type = R_386_TLS_TPOFF32;
3750
3751               if (dr_type == R_386_TLS_TPOFF && indx == 0)
3752                 bfd_put_32 (output_bfd,
3753                             relocation - elf_i386_dtpoff_base (info),
3754                             htab->elf.sgot->contents + off);
3755               else if (dr_type == R_386_TLS_TPOFF32 && indx == 0)
3756                 bfd_put_32 (output_bfd,
3757                             elf_i386_dtpoff_base (info) - relocation,
3758                             htab->elf.sgot->contents + off);
3759               else if (dr_type != R_386_TLS_DESC)
3760                 bfd_put_32 (output_bfd, 0,
3761                             htab->elf.sgot->contents + off);
3762               outrel.r_info = ELF32_R_INFO (indx, dr_type);
3763
3764               loc = sreloc->contents;
3765               loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3766               BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3767                           <= sreloc->contents + sreloc->size);
3768               bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3769
3770               if (GOT_TLS_GD_P (tls_type))
3771                 {
3772                   if (indx == 0)
3773                     {
3774                       BFD_ASSERT (! unresolved_reloc);
3775                       bfd_put_32 (output_bfd,
3776                                   relocation - elf_i386_dtpoff_base (info),
3777                                   htab->elf.sgot->contents + off + 4);
3778                     }
3779                   else
3780                     {
3781                       bfd_put_32 (output_bfd, 0,
3782                                   htab->elf.sgot->contents + off + 4);
3783                       outrel.r_info = ELF32_R_INFO (indx,
3784                                                     R_386_TLS_DTPOFF32);
3785                       outrel.r_offset += 4;
3786                       sreloc->reloc_count++;
3787                       loc += sizeof (Elf32_External_Rel);
3788                       BFD_ASSERT (loc + sizeof (Elf32_External_Rel)
3789                                   <= sreloc->contents + sreloc->size);
3790                       bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3791                     }
3792                 }
3793               else if (tls_type == GOT_TLS_IE_BOTH)
3794                 {
3795                   bfd_put_32 (output_bfd,
3796                               (indx == 0
3797                                ? relocation - elf_i386_dtpoff_base (info)
3798                                : 0),
3799                               htab->elf.sgot->contents + off + 4);
3800                   outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
3801                   outrel.r_offset += 4;
3802                   sreloc->reloc_count++;
3803                   loc += sizeof (Elf32_External_Rel);
3804                   bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3805                 }
3806
3807             dr_done:
3808               if (h != NULL)
3809                 h->got.offset |= 1;
3810               else
3811                 local_got_offsets[r_symndx] |= 1;
3812             }
3813
3814           if (off >= (bfd_vma) -2
3815               && ! GOT_TLS_GDESC_P (tls_type))
3816             abort ();
3817           if (r_type == R_386_TLS_GOTDESC
3818               || r_type == R_386_TLS_DESC_CALL)
3819             {
3820               relocation = htab->sgotplt_jump_table_size + offplt;
3821               unresolved_reloc = FALSE;
3822             }
3823           else if (r_type == ELF32_R_TYPE (rel->r_info))
3824             {
3825               bfd_vma g_o_t = htab->elf.sgotplt->output_section->vma
3826                               + htab->elf.sgotplt->output_offset;
3827               relocation = htab->elf.sgot->output_section->vma
3828                 + htab->elf.sgot->output_offset + off - g_o_t;
3829               if ((r_type == R_386_TLS_IE || r_type == R_386_TLS_GOTIE)
3830                   && tls_type == GOT_TLS_IE_BOTH)
3831                 relocation += 4;
3832               if (r_type == R_386_TLS_IE)
3833                 relocation += g_o_t;
3834               unresolved_reloc = FALSE;
3835             }
3836           else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GD)
3837             {
3838               unsigned int val, type;
3839               bfd_vma roff;
3840
3841               /* GD->IE transition.  */
3842               type = bfd_get_8 (input_bfd, contents + rel->r_offset - 2);
3843               val = bfd_get_8 (input_bfd, contents + rel->r_offset - 1);
3844               if (type == 0x04)
3845                 {
3846                   /* leal foo(,%reg,1), %eax; call ___tls_get_addr
3847                      Change it into:
3848                      movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax.  */
3849                   val >>= 3;
3850                   roff = rel->r_offset - 3;
3851                 }
3852               else
3853                 {
3854                   /* leal foo(%reg), %eax; call ___tls_get_addr; nop
3855                      Change it into:
3856                      movl %gs:0, %eax; subl $foo@gottpoff(%reg), %eax.  */
3857                   roff = rel->r_offset - 2;
3858                 }
3859               memcpy (contents + roff,
3860                       "\x65\xa1\0\0\0\0\x2b\x80\0\0\0", 12);
3861               contents[roff + 7] = 0x80 | (val & 7);
3862               /* If foo is used only with foo@gotntpoff(%reg) and
3863                  foo@indntpoff, but not with foo@gottpoff(%reg), change
3864                  subl $foo@gottpoff(%reg), %eax
3865                  into:
3866                  addl $foo@gotntpoff(%reg), %eax.  */
3867               if (tls_type == GOT_TLS_IE_POS)
3868                 contents[roff + 6] = 0x03;
3869               bfd_put_32 (output_bfd,
3870                           htab->elf.sgot->output_section->vma
3871                           + htab->elf.sgot->output_offset + off
3872                           - htab->elf.sgotplt->output_section->vma
3873                           - htab->elf.sgotplt->output_offset,
3874                           contents + roff + 8);
3875               /* Skip R_386_PLT32.  */
3876               rel++;
3877               continue;
3878             }
3879           else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_GOTDESC)
3880             {
3881               /* GDesc -> IE transition.
3882                  It's originally something like:
3883                  leal x@tlsdesc(%ebx), %eax
3884
3885                  Change it to:
3886                  movl x@gotntpoff(%ebx), %eax # before xchg %ax,%ax
3887                  or:
3888                  movl x@gottpoff(%ebx), %eax # before negl %eax
3889
3890                  Registers other than %eax may be set up here.  */
3891
3892               bfd_vma roff;
3893
3894               /* First, make sure it's a leal adding ebx to a 32-bit
3895                  offset into any register, although it's probably
3896                  almost always going to be eax.  */
3897               roff = rel->r_offset;
3898
3899               /* Now modify the instruction as appropriate.  */
3900               /* To turn a leal into a movl in the form we use it, it
3901                  suffices to change the first byte from 0x8d to 0x8b.
3902                  aoliva FIXME: should we decide to keep the leal, all
3903                  we have to do is remove the statement below, and
3904                  adjust the relaxation of R_386_TLS_DESC_CALL.  */
3905               bfd_put_8 (output_bfd, 0x8b, contents + roff - 2);
3906
3907               if (tls_type == GOT_TLS_IE_BOTH)
3908                 off += 4;
3909
3910               bfd_put_32 (output_bfd,
3911                           htab->elf.sgot->output_section->vma
3912                           + htab->elf.sgot->output_offset + off
3913                           - htab->elf.sgotplt->output_section->vma
3914                           - htab->elf.sgotplt->output_offset,
3915                           contents + roff);
3916               continue;
3917             }
3918           else if (ELF32_R_TYPE (rel->r_info) == R_386_TLS_DESC_CALL)
3919             {
3920               /* GDesc -> IE transition.
3921                  It's originally:
3922                  call *(%eax)
3923
3924                  Change it to:
3925                  xchg %ax,%ax
3926                  or
3927                  negl %eax
3928                  depending on how we transformed the TLS_GOTDESC above.
3929               */
3930
3931               bfd_vma roff;
3932
3933               roff = rel->r_offset;
3934
3935               /* Now modify the instruction as appropriate.  */
3936               if (tls_type != GOT_TLS_IE_NEG)
3937                 {
3938                   /* xchg %ax,%ax */
3939                   bfd_put_8 (output_bfd, 0x66, contents + roff);
3940                   bfd_put_8 (output_bfd, 0x90, contents + roff + 1);
3941                 }
3942               else
3943                 {
3944                   /* negl %eax */
3945                   bfd_put_8 (output_bfd, 0xf7, contents + roff);
3946                   bfd_put_8 (output_bfd, 0xd8, contents + roff + 1);
3947                 }
3948
3949               continue;
3950             }
3951           else
3952             BFD_ASSERT (FALSE);
3953           break;
3954
3955         case R_386_TLS_LDM:
3956           if (! elf_i386_tls_transition (info, input_bfd,
3957                                          input_section, contents,
3958                                          symtab_hdr, sym_hashes,
3959                                          &r_type, GOT_UNKNOWN, rel,
3960                                          relend, h, r_symndx))
3961             return FALSE;
3962
3963           if (r_type != R_386_TLS_LDM)
3964             {
3965               /* LD->LE transition:
3966                  leal foo(%reg), %eax; call ___tls_get_addr.
3967                  We change it into:
3968                  movl %gs:0, %eax; nop; leal 0(%esi,1), %esi.  */
3969               BFD_ASSERT (r_type == R_386_TLS_LE_32);
3970               memcpy (contents + rel->r_offset - 2,
3971                       "\x65\xa1\0\0\0\0\x90\x8d\x74\x26", 11);
3972               /* Skip R_386_PC32/R_386_PLT32.  */
3973               rel++;
3974               continue;
3975             }
3976
3977           if (htab->elf.sgot == NULL)
3978             abort ();
3979
3980           off = htab->tls_ldm_got.offset;
3981           if (off & 1)
3982             off &= ~1;
3983           else
3984             {
3985               Elf_Internal_Rela outrel;
3986               bfd_byte *loc;
3987
3988               if (htab->elf.srelgot == NULL)
3989                 abort ();
3990
3991               outrel.r_offset = (htab->elf.sgot->output_section->vma
3992                                  + htab->elf.sgot->output_offset + off);
3993
3994               bfd_put_32 (output_bfd, 0,
3995                           htab->elf.sgot->contents + off);
3996               bfd_put_32 (output_bfd, 0,
3997                           htab->elf.sgot->contents + off + 4);
3998               outrel.r_info = ELF32_R_INFO (0, R_386_TLS_DTPMOD32);
3999               loc = htab->elf.srelgot->contents;
4000               loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
4001               bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4002               htab->tls_ldm_got.offset |= 1;
4003             }
4004           relocation = htab->elf.sgot->output_section->vma
4005                        + htab->elf.sgot->output_offset + off
4006                        - htab->elf.sgotplt->output_section->vma
4007                        - htab->elf.sgotplt->output_offset;
4008           unresolved_reloc = FALSE;
4009           break;
4010
4011         case R_386_TLS_LDO_32:
4012           if (info->shared || (input_section->flags & SEC_CODE) == 0)
4013             relocation -= elf_i386_dtpoff_base (info);
4014           else
4015             /* When converting LDO to LE, we must negate.  */
4016             relocation = -elf_i386_tpoff (info, relocation);
4017           break;
4018
4019         case R_386_TLS_LE_32:
4020         case R_386_TLS_LE:
4021           if (!info->executable)
4022             {
4023               Elf_Internal_Rela outrel;
4024               asection *sreloc;
4025               bfd_byte *loc;
4026
4027               outrel.r_offset = rel->r_offset
4028                                 + input_section->output_section->vma
4029                                 + input_section->output_offset;
4030               if (h != NULL && h->dynindx != -1)
4031                 indx = h->dynindx;
4032               else
4033                 indx = 0;
4034               if (r_type == R_386_TLS_LE_32)
4035                 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF32);
4036               else
4037                 outrel.r_info = ELF32_R_INFO (indx, R_386_TLS_TPOFF);
4038               sreloc = elf_section_data (input_section)->sreloc;
4039               if (sreloc == NULL)
4040                 abort ();
4041               loc = sreloc->contents;
4042               loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
4043               bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
4044               if (indx)
4045                 continue;
4046               else if (r_type == R_386_TLS_LE_32)
4047                 relocation = elf_i386_dtpoff_base (info) - relocation;
4048               else
4049                 relocation -= elf_i386_dtpoff_base (info);
4050             }
4051           else if (r_type == R_386_TLS_LE_32)
4052             relocation = elf_i386_tpoff (info, relocation);
4053           else
4054             relocation = -elf_i386_tpoff (info, relocation);
4055           break;
4056
4057         default:
4058           break;
4059         }
4060
4061       /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4062          because such sections are not SEC_ALLOC and thus ld.so will
4063          not process them.  */
4064       if (unresolved_reloc
4065           && !((input_section->flags & SEC_DEBUGGING) != 0
4066                && h->def_dynamic))
4067         {
4068           (*_bfd_error_handler)
4069             (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
4070              input_bfd,
4071              input_section,
4072              (long) rel->r_offset,
4073              howto->name,
4074              h->root.root.string);
4075           return FALSE;
4076         }
4077
4078 do_relocation:
4079       r = _bfd_final_link_relocate (howto, input_bfd, input_section,
4080                                     contents, rel->r_offset,
4081                                     relocation, 0);
4082
4083       if (r != bfd_reloc_ok)
4084         {
4085           const char *name;
4086
4087           if (h != NULL)
4088             name = h->root.root.string;
4089           else
4090             {
4091               name = bfd_elf_string_from_elf_section (input_bfd,
4092                                                       symtab_hdr->sh_link,
4093                                                       sym->st_name);
4094               if (name == NULL)
4095                 return FALSE;
4096               if (*name == '\0')
4097                 name = bfd_section_name (input_bfd, sec);
4098             }
4099
4100           if (r == bfd_reloc_overflow)
4101             {
4102               if (! ((*info->callbacks->reloc_overflow)
4103                      (info, (h ? &h->root : NULL), name, howto->name,
4104                       (bfd_vma) 0, input_bfd, input_section,
4105                       rel->r_offset)))
4106                 return FALSE;
4107             }
4108           else
4109             {
4110               (*_bfd_error_handler)
4111                 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
4112                  input_bfd, input_section,
4113                  (long) rel->r_offset, name, (int) r);
4114               return FALSE;
4115             }
4116         }
4117     }
4118
4119   return TRUE;
4120 }
4121
4122 /* Finish up dynamic symbol handling.  We set the contents of various
4123    dynamic sections here.  */
4124
4125 static bfd_boolean
4126 elf_i386_finish_dynamic_symbol (bfd *output_bfd,
4127                                 struct bfd_link_info *info,
4128                                 struct elf_link_hash_entry *h,
4129                                 Elf_Internal_Sym *sym)
4130 {
4131   struct elf_i386_link_hash_table *htab;
4132
4133   htab = elf_i386_hash_table (info);
4134   if (htab == NULL)
4135     return FALSE;
4136
4137   if (h->plt.offset != (bfd_vma) -1)
4138     {
4139       bfd_vma plt_index;
4140       bfd_vma got_offset;
4141       Elf_Internal_Rela rel;
4142       bfd_byte *loc;
4143       asection *plt, *gotplt, *relplt;
4144
4145       /* When building a static executable, use .iplt, .igot.plt and
4146          .rel.iplt sections for STT_GNU_IFUNC symbols.  */
4147       if (htab->elf.splt != NULL)
4148         {
4149           plt = htab->elf.splt;
4150           gotplt = htab->elf.sgotplt;
4151           relplt = htab->elf.srelplt;
4152         }
4153       else
4154         {
4155           plt = htab->elf.iplt;
4156           gotplt = htab->elf.igotplt;
4157           relplt = htab->elf.irelplt;
4158         }
4159
4160       /* This symbol has an entry in the procedure linkage table.  Set
4161          it up.  */
4162
4163       if ((h->dynindx == -1
4164            && !((h->forced_local || info->executable)
4165                 && h->def_regular
4166                 && h->type == STT_GNU_IFUNC))
4167           || plt == NULL
4168           || gotplt == NULL
4169           || relplt == NULL)
4170         abort ();
4171
4172       /* Get the index in the procedure linkage table which
4173          corresponds to this symbol.  This is the index of this symbol
4174          in all the symbols for which we are making plt entries.  The
4175          first entry in the procedure linkage table is reserved.
4176
4177          Get the offset into the .got table of the entry that
4178          corresponds to this function.  Each .got entry is 4 bytes.
4179          The first three are reserved.
4180
4181          For static executables, we don't reserve anything.  */
4182
4183       if (plt == htab->elf.splt)
4184         {
4185           plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
4186           got_offset = (plt_index + 3) * 4;
4187         }
4188       else
4189         {
4190           plt_index = h->plt.offset / PLT_ENTRY_SIZE;
4191           got_offset = plt_index * 4;
4192         }
4193
4194       /* Fill in the entry in the procedure linkage table.  */
4195       if (! info->shared)
4196         {
4197           memcpy (plt->contents + h->plt.offset, elf_i386_plt_entry,
4198                   PLT_ENTRY_SIZE);
4199           bfd_put_32 (output_bfd,
4200                       (gotplt->output_section->vma
4201                        + gotplt->output_offset
4202                        + got_offset),
4203                       plt->contents + h->plt.offset + 2);
4204
4205           if (htab->is_vxworks)
4206             {
4207               int s, k, reloc_index;
4208
4209               /* Create the R_386_32 relocation referencing the GOT
4210                  for this PLT entry.  */
4211
4212               /* S: Current slot number (zero-based).  */
4213               s = (h->plt.offset - PLT_ENTRY_SIZE) / PLT_ENTRY_SIZE;
4214               /* K: Number of relocations for PLTResolve. */
4215               if (info->shared)
4216                 k = PLTRESOLVE_RELOCS_SHLIB;
4217               else
4218                 k = PLTRESOLVE_RELOCS;
4219               /* Skip the PLTresolve relocations, and the relocations for
4220                  the other PLT slots. */
4221               reloc_index = k + s * PLT_NON_JUMP_SLOT_RELOCS;
4222               loc = (htab->srelplt2->contents + reloc_index
4223                      * sizeof (Elf32_External_Rel));
4224
4225               rel.r_offset = (htab->elf.splt->output_section->vma
4226                               + htab->elf.splt->output_offset
4227                               + h->plt.offset + 2),
4228               rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4229               bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4230
4231               /* Create the R_386_32 relocation referencing the beginning of
4232                  the PLT for this GOT entry.  */
4233               rel.r_offset = (htab->elf.sgotplt->output_section->vma
4234                               + htab->elf.sgotplt->output_offset
4235                               + got_offset);
4236               rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
4237               bfd_elf32_swap_reloc_out (output_bfd, &rel,
4238               loc + sizeof (Elf32_External_Rel));
4239             }
4240         }
4241       else
4242         {
4243           memcpy (plt->contents + h->plt.offset, elf_i386_pic_plt_entry,
4244                   PLT_ENTRY_SIZE);
4245           bfd_put_32 (output_bfd, got_offset,
4246                       plt->contents + h->plt.offset + 2);
4247         }
4248
4249       /* Don't fill PLT entry for static executables.  */
4250       if (plt == htab->elf.splt)
4251         {
4252           bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
4253                       plt->contents + h->plt.offset + 7);
4254           bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE),
4255                       plt->contents + h->plt.offset + 12);
4256         }
4257
4258       /* Fill in the entry in the global offset table.  */
4259       bfd_put_32 (output_bfd,
4260                   (plt->output_section->vma
4261                    + plt->output_offset
4262                    + h->plt.offset
4263                    + 6),
4264                   gotplt->contents + got_offset);
4265
4266       /* Fill in the entry in the .rel.plt section.  */
4267       rel.r_offset = (gotplt->output_section->vma
4268                       + gotplt->output_offset
4269                       + got_offset);
4270       if (h->dynindx == -1
4271           || ((info->executable
4272                || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
4273               && h->def_regular
4274                && h->type == STT_GNU_IFUNC))
4275         {
4276           /* If an STT_GNU_IFUNC symbol is locally defined, generate
4277              R_386_IRELATIVE instead of R_386_JUMP_SLOT.  Store addend
4278              in the .got.plt section.  */
4279           bfd_put_32 (output_bfd,
4280                       (h->root.u.def.value
4281                        + h->root.u.def.section->output_section->vma
4282                        + h->root.u.def.section->output_offset),
4283                       gotplt->contents + got_offset);
4284           rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
4285         }
4286       else
4287         rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
4288       loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
4289       bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4290
4291       if (!h->def_regular)
4292         {
4293           /* Mark the symbol as undefined, rather than as defined in
4294              the .plt section.  Leave the value if there were any
4295              relocations where pointer equality matters (this is a clue
4296              for the dynamic linker, to make function pointer
4297              comparisons work between an application and shared
4298              library), otherwise set it to zero.  If a function is only
4299              called from a binary, there is no need to slow down
4300              shared libraries because of that.  */
4301           sym->st_shndx = SHN_UNDEF;
4302           if (!h->pointer_equality_needed)
4303             sym->st_value = 0;
4304         }
4305     }
4306
4307   if (h->got.offset != (bfd_vma) -1
4308       && ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
4309       && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
4310     {
4311       Elf_Internal_Rela rel;
4312       bfd_byte *loc;
4313
4314       /* This symbol has an entry in the global offset table.  Set it
4315          up.  */
4316
4317       if (htab->elf.sgot == NULL || htab->elf.srelgot == NULL)
4318         abort ();
4319
4320       rel.r_offset = (htab->elf.sgot->output_section->vma
4321                       + htab->elf.sgot->output_offset
4322                       + (h->got.offset & ~(bfd_vma) 1));
4323
4324       /* If this is a static link, or it is a -Bsymbolic link and the
4325          symbol is defined locally or was forced to be local because
4326          of a version file, we just want to emit a RELATIVE reloc.
4327          The entry in the global offset table will already have been
4328          initialized in the relocate_section function.  */
4329       if (h->def_regular
4330           && h->type == STT_GNU_IFUNC)
4331         {
4332           if (info->shared)
4333             {
4334               /* Generate R_386_GLOB_DAT.  */
4335               goto do_glob_dat;
4336             }
4337           else
4338             {
4339               asection *plt;
4340
4341               if (!h->pointer_equality_needed)
4342                 abort ();
4343
4344               /* For non-shared object, we can't use .got.plt, which
4345                  contains the real function addres if we need pointer
4346                  equality.  We load the GOT entry with the PLT entry.  */
4347               plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
4348               bfd_put_32 (output_bfd,
4349                           (plt->output_section->vma
4350                            + plt->output_offset + h->plt.offset),
4351                           htab->elf.sgot->contents + h->got.offset);
4352               return TRUE;
4353             }
4354         }
4355       else if (info->shared
4356                && SYMBOL_REFERENCES_LOCAL (info, h))
4357         {
4358           BFD_ASSERT((h->got.offset & 1) != 0);
4359           rel.r_info = ELF32_R_INFO (0, R_386_RELATIVE);
4360         }
4361       else
4362         {
4363           BFD_ASSERT((h->got.offset & 1) == 0);
4364 do_glob_dat:
4365           bfd_put_32 (output_bfd, (bfd_vma) 0,
4366                       htab->elf.sgot->contents + h->got.offset);
4367           rel.r_info = ELF32_R_INFO (h->dynindx, R_386_GLOB_DAT);
4368         }
4369
4370       loc = htab->elf.srelgot->contents;
4371       loc += htab->elf.srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
4372       bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4373     }
4374
4375   if (h->needs_copy)
4376     {
4377       Elf_Internal_Rela rel;
4378       bfd_byte *loc;
4379
4380       /* This symbol needs a copy reloc.  Set it up.  */
4381
4382       if (h->dynindx == -1
4383           || (h->root.type != bfd_link_hash_defined
4384               && h->root.type != bfd_link_hash_defweak)
4385           || htab->srelbss == NULL)
4386         abort ();
4387
4388       rel.r_offset = (h->root.u.def.value
4389                       + h->root.u.def.section->output_section->vma
4390                       + h->root.u.def.section->output_offset);
4391       rel.r_info = ELF32_R_INFO (h->dynindx, R_386_COPY);
4392       loc = htab->srelbss->contents;
4393       loc += htab->srelbss->reloc_count++ * sizeof (Elf32_External_Rel);
4394       bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
4395     }
4396
4397   /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute.  SYM may
4398      be NULL for local symbols.
4399
4400      On VxWorks, the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it
4401      is relative to the ".got" section.  */
4402   if (sym != NULL
4403       && (strcmp (h->root.root.string, "_DYNAMIC") == 0
4404           || (!htab->is_vxworks && h == htab->elf.hgot)))
4405     sym->st_shndx = SHN_ABS;
4406
4407   return TRUE;
4408 }
4409
4410 /* Finish up local dynamic symbol handling.  We set the contents of
4411    various dynamic sections here.  */
4412
4413 static bfd_boolean
4414 elf_i386_finish_local_dynamic_symbol (void **slot, void *inf)
4415 {
4416   struct elf_link_hash_entry *h
4417     = (struct elf_link_hash_entry *) *slot;
4418   struct bfd_link_info *info
4419     = (struct bfd_link_info *) inf;
4420
4421   return elf_i386_finish_dynamic_symbol (info->output_bfd, info,
4422                                          h, NULL);
4423 }
4424
4425 /* Used to decide how to sort relocs in an optimal manner for the
4426    dynamic linker, before writing them out.  */
4427
4428 static enum elf_reloc_type_class
4429 elf_i386_reloc_type_class (const Elf_Internal_Rela *rela)
4430 {
4431   switch (ELF32_R_TYPE (rela->r_info))
4432     {
4433     case R_386_RELATIVE:
4434       return reloc_class_relative;
4435     case R_386_JUMP_SLOT:
4436       return reloc_class_plt;
4437     case R_386_COPY:
4438       return reloc_class_copy;
4439     default:
4440       return reloc_class_normal;
4441     }
4442 }
4443
4444 /* Finish up the dynamic sections.  */
4445
4446 static bfd_boolean
4447 elf_i386_finish_dynamic_sections (bfd *output_bfd,
4448                                   struct bfd_link_info *info)
4449 {
4450   struct elf_i386_link_hash_table *htab;
4451   bfd *dynobj;
4452   asection *sdyn;
4453
4454   htab = elf_i386_hash_table (info);
4455   if (htab == NULL)
4456     return FALSE;
4457
4458   dynobj = htab->elf.dynobj;
4459   sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4460
4461   if (htab->elf.dynamic_sections_created)
4462     {
4463       Elf32_External_Dyn *dyncon, *dynconend;
4464
4465       if (sdyn == NULL || htab->elf.sgot == NULL)
4466         abort ();
4467
4468       dyncon = (Elf32_External_Dyn *) sdyn->contents;
4469       dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4470       for (; dyncon < dynconend; dyncon++)
4471         {
4472           Elf_Internal_Dyn dyn;
4473           asection *s;
4474
4475           bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4476
4477           switch (dyn.d_tag)
4478             {
4479             default:
4480               if (htab->is_vxworks
4481                   && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
4482                 break;
4483               continue;
4484
4485             case DT_PLTGOT:
4486               s = htab->elf.sgotplt;
4487               dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4488               break;
4489
4490             case DT_JMPREL:
4491               s = htab->elf.srelplt;
4492               dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
4493               break;
4494
4495             case DT_PLTRELSZ:
4496               s = htab->elf.srelplt;
4497               dyn.d_un.d_val = s->size;
4498               break;
4499
4500             case DT_RELSZ:
4501               /* My reading of the SVR4 ABI indicates that the
4502                  procedure linkage table relocs (DT_JMPREL) should be
4503                  included in the overall relocs (DT_REL).  This is
4504                  what Solaris does.  However, UnixWare can not handle
4505                  that case.  Therefore, we override the DT_RELSZ entry
4506                  here to make it not include the JMPREL relocs.  */
4507               s = htab->elf.srelplt;
4508               if (s == NULL)
4509                 continue;
4510               dyn.d_un.d_val -= s->size;
4511               break;
4512
4513             case DT_REL:
4514               /* We may not be using the standard ELF linker script.
4515                  If .rel.plt is the first .rel section, we adjust
4516                  DT_REL to not include it.  */
4517               s = htab->elf.srelplt;
4518               if (s == NULL)
4519                 continue;
4520               if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
4521                 continue;
4522               dyn.d_un.d_ptr += s->size;
4523               break;
4524             }
4525
4526           bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4527         }
4528
4529       /* Fill in the first entry in the procedure linkage table.  */
4530       if (htab->elf.splt && htab->elf.splt->size > 0)
4531         {
4532           if (info->shared)
4533             {
4534               memcpy (htab->elf.splt->contents, elf_i386_pic_plt0_entry,
4535                       sizeof (elf_i386_pic_plt0_entry));
4536               memset (htab->elf.splt->contents + sizeof (elf_i386_pic_plt0_entry),
4537                       htab->plt0_pad_byte,
4538                       PLT_ENTRY_SIZE - sizeof (elf_i386_pic_plt0_entry));
4539             }
4540           else
4541             {
4542               memcpy (htab->elf.splt->contents, elf_i386_plt0_entry,
4543                       sizeof(elf_i386_plt0_entry));
4544               memset (htab->elf.splt->contents + sizeof (elf_i386_plt0_entry),
4545                       htab->plt0_pad_byte,
4546                       PLT_ENTRY_SIZE - sizeof (elf_i386_plt0_entry));
4547               bfd_put_32 (output_bfd,
4548                           (htab->elf.sgotplt->output_section->vma
4549                            + htab->elf.sgotplt->output_offset
4550                            + 4),
4551                           htab->elf.splt->contents + 2);
4552               bfd_put_32 (output_bfd,
4553                           (htab->elf.sgotplt->output_section->vma
4554                            + htab->elf.sgotplt->output_offset
4555                            + 8),
4556                           htab->elf.splt->contents + 8);
4557
4558               if (htab->is_vxworks)
4559                 {
4560                   Elf_Internal_Rela rel;
4561
4562                   /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 4.
4563                      On IA32 we use REL relocations so the addend goes in
4564                      the PLT directly.  */
4565                   rel.r_offset = (htab->elf.splt->output_section->vma
4566                                   + htab->elf.splt->output_offset
4567                                   + 2);
4568                   rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4569                   bfd_elf32_swap_reloc_out (output_bfd, &rel,
4570                                             htab->srelplt2->contents);
4571                   /* Generate a relocation for _GLOBAL_OFFSET_TABLE_ + 8.  */
4572                   rel.r_offset = (htab->elf.splt->output_section->vma
4573                                   + htab->elf.splt->output_offset
4574                                   + 8);
4575                   rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4576                   bfd_elf32_swap_reloc_out (output_bfd, &rel,
4577                                             htab->srelplt2->contents +
4578                                             sizeof (Elf32_External_Rel));
4579                 }
4580             }
4581
4582           /* UnixWare sets the entsize of .plt to 4, although that doesn't
4583              really seem like the right value.  */
4584           elf_section_data (htab->elf.splt->output_section)
4585             ->this_hdr.sh_entsize = 4;
4586
4587           /* Correct the .rel.plt.unloaded relocations.  */
4588           if (htab->is_vxworks && !info->shared)
4589             {
4590               int num_plts = (htab->elf.splt->size / PLT_ENTRY_SIZE) - 1;
4591               unsigned char *p;
4592
4593               p = htab->srelplt2->contents;
4594               if (info->shared)
4595                 p += PLTRESOLVE_RELOCS_SHLIB * sizeof (Elf32_External_Rel);
4596               else
4597                 p += PLTRESOLVE_RELOCS * sizeof (Elf32_External_Rel);
4598
4599               for (; num_plts; num_plts--)
4600                 {
4601                   Elf_Internal_Rela rel;
4602                   bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
4603                   rel.r_info = ELF32_R_INFO (htab->elf.hgot->indx, R_386_32);
4604                   bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4605                   p += sizeof (Elf32_External_Rel);
4606
4607                   bfd_elf32_swap_reloc_in (output_bfd, p, &rel);
4608                   rel.r_info = ELF32_R_INFO (htab->elf.hplt->indx, R_386_32);
4609                   bfd_elf32_swap_reloc_out (output_bfd, &rel, p);
4610                   p += sizeof (Elf32_External_Rel);
4611                 }
4612             }
4613         }
4614     }
4615
4616   if (htab->elf.sgotplt)
4617     {
4618       if (bfd_is_abs_section (htab->elf.sgotplt->output_section))
4619         {
4620           (*_bfd_error_handler)
4621             (_("discarded output section: `%A'"), htab->elf.sgotplt);
4622           return FALSE;
4623         }
4624
4625       /* Fill in the first three entries in the global offset table.  */
4626       if (htab->elf.sgotplt->size > 0)
4627         {
4628           bfd_put_32 (output_bfd,
4629                       (sdyn == NULL ? 0
4630                        : sdyn->output_section->vma + sdyn->output_offset),
4631                       htab->elf.sgotplt->contents);
4632           bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 4);
4633           bfd_put_32 (output_bfd, 0, htab->elf.sgotplt->contents + 8);
4634         }
4635
4636       elf_section_data (htab->elf.sgotplt->output_section)->this_hdr.sh_entsize = 4;
4637     }
4638
4639   if (htab->elf.sgot && htab->elf.sgot->size > 0)
4640     elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 4;
4641
4642   /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols.  */
4643   htab_traverse (htab->loc_hash_table,
4644                  elf_i386_finish_local_dynamic_symbol,
4645                  info);
4646
4647   return TRUE;
4648 }
4649
4650 /* Return address for Ith PLT stub in section PLT, for relocation REL
4651    or (bfd_vma) -1 if it should not be included.  */
4652
4653 static bfd_vma
4654 elf_i386_plt_sym_val (bfd_vma i, const asection *plt,
4655                       const arelent *rel ATTRIBUTE_UNUSED)
4656 {
4657   return plt->vma + (i + 1) * PLT_ENTRY_SIZE;
4658 }
4659
4660 /* Return TRUE if symbol should be hashed in the `.gnu.hash' section.  */
4661
4662 static bfd_boolean
4663 elf_i386_hash_symbol (struct elf_link_hash_entry *h)
4664 {
4665   if (h->plt.offset != (bfd_vma) -1
4666       && !h->def_regular
4667       && !h->pointer_equality_needed)
4668     return FALSE;
4669
4670   return _bfd_elf_hash_symbol (h);
4671 }
4672
4673 /* Hook called by the linker routine which adds symbols from an object
4674    file.  */
4675
4676 static bfd_boolean
4677 elf_i386_add_symbol_hook (bfd * abfd,
4678                           struct bfd_link_info * info ATTRIBUTE_UNUSED,
4679                           Elf_Internal_Sym * sym,
4680                           const char ** namep ATTRIBUTE_UNUSED,
4681                           flagword * flagsp ATTRIBUTE_UNUSED,
4682                           asection ** secp ATTRIBUTE_UNUSED,
4683                           bfd_vma * valp ATTRIBUTE_UNUSED)
4684 {
4685   if ((abfd->flags & DYNAMIC) == 0
4686       && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)
4687     elf_tdata (info->output_bfd)->has_ifunc_symbols = TRUE;
4688
4689   return TRUE;
4690 }
4691
4692 #define TARGET_LITTLE_SYM               bfd_elf32_i386_vec
4693 #define TARGET_LITTLE_NAME              "elf32-i386"
4694 #define ELF_ARCH                        bfd_arch_i386
4695 #define ELF_TARGET_ID                   I386_ELF_DATA
4696 #define ELF_MACHINE_CODE                EM_386
4697 #define ELF_MAXPAGESIZE                 0x1000
4698
4699 #define elf_backend_can_gc_sections     1
4700 #define elf_backend_can_refcount        1
4701 #define elf_backend_want_got_plt        1
4702 #define elf_backend_plt_readonly        1
4703 #define elf_backend_want_plt_sym        0
4704 #define elf_backend_got_header_size     12
4705
4706 /* Support RELA for objdump of prelink objects.  */
4707 #define elf_info_to_howto                     elf_i386_info_to_howto_rel
4708 #define elf_info_to_howto_rel                 elf_i386_info_to_howto_rel
4709
4710 #define bfd_elf32_mkobject                    elf_i386_mkobject
4711
4712 #define bfd_elf32_bfd_is_local_label_name     elf_i386_is_local_label_name
4713 #define bfd_elf32_bfd_link_hash_table_create  elf_i386_link_hash_table_create
4714 #define bfd_elf32_bfd_link_hash_table_free    elf_i386_link_hash_table_free
4715 #define bfd_elf32_bfd_reloc_type_lookup       elf_i386_reloc_type_lookup
4716 #define bfd_elf32_bfd_reloc_name_lookup       elf_i386_reloc_name_lookup
4717
4718 #define elf_backend_adjust_dynamic_symbol     elf_i386_adjust_dynamic_symbol
4719 #define elf_backend_relocs_compatible         _bfd_elf_relocs_compatible
4720 #define elf_backend_check_relocs              elf_i386_check_relocs
4721 #define elf_backend_copy_indirect_symbol      elf_i386_copy_indirect_symbol
4722 #define elf_backend_create_dynamic_sections   elf_i386_create_dynamic_sections
4723 #define elf_backend_fake_sections             elf_i386_fake_sections
4724 #define elf_backend_finish_dynamic_sections   elf_i386_finish_dynamic_sections
4725 #define elf_backend_finish_dynamic_symbol     elf_i386_finish_dynamic_symbol
4726 #define elf_backend_gc_mark_hook              elf_i386_gc_mark_hook
4727 #define elf_backend_gc_sweep_hook             elf_i386_gc_sweep_hook
4728 #define elf_backend_grok_prstatus             elf_i386_grok_prstatus
4729 #define elf_backend_grok_psinfo               elf_i386_grok_psinfo
4730 #define elf_backend_reloc_type_class          elf_i386_reloc_type_class
4731 #define elf_backend_relocate_section          elf_i386_relocate_section
4732 #define elf_backend_size_dynamic_sections     elf_i386_size_dynamic_sections
4733 #define elf_backend_always_size_sections      elf_i386_always_size_sections
4734 #define elf_backend_omit_section_dynsym \
4735   ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
4736 #define elf_backend_plt_sym_val               elf_i386_plt_sym_val
4737 #define elf_backend_hash_symbol               elf_i386_hash_symbol
4738 #define elf_backend_add_symbol_hook           elf_i386_add_symbol_hook
4739 #undef  elf_backend_post_process_headers
4740 #define elf_backend_post_process_headers        _bfd_elf_set_osabi
4741
4742 #include "elf32-target.h"
4743
4744 /* FreeBSD support.  */
4745
4746 #undef  TARGET_LITTLE_SYM
4747 #define TARGET_LITTLE_SYM               bfd_elf32_i386_freebsd_vec
4748 #undef  TARGET_LITTLE_NAME
4749 #define TARGET_LITTLE_NAME              "elf32-i386-freebsd"
4750 #undef  ELF_OSABI
4751 #define ELF_OSABI                       ELFOSABI_FREEBSD
4752
4753 /* The kernel recognizes executables as valid only if they carry a
4754    "FreeBSD" label in the ELF header.  So we put this label on all
4755    executables and (for simplicity) also all other object files.  */
4756
4757 static void
4758 elf_i386_fbsd_post_process_headers (bfd *abfd, struct bfd_link_info *info)
4759 {
4760   _bfd_elf_set_osabi (abfd, info);
4761
4762 #ifdef OLD_FREEBSD_ABI_LABEL
4763   /* The ABI label supported by FreeBSD <= 4.0 is quite nonstandard.  */
4764   memcpy (&i_ehdrp->e_ident[EI_ABIVERSION], "FreeBSD", 8);
4765 #endif
4766 }
4767
4768 #undef  elf_backend_post_process_headers
4769 #define elf_backend_post_process_headers        elf_i386_fbsd_post_process_headers
4770 #undef  elf32_bed
4771 #define elf32_bed                               elf32_i386_fbsd_bed
4772
4773 #undef elf_backend_add_symbol_hook
4774
4775 #include "elf32-target.h"
4776
4777 /* Solaris 2.  */
4778
4779 #undef  TARGET_LITTLE_SYM
4780 #define TARGET_LITTLE_SYM               bfd_elf32_i386_sol2_vec
4781 #undef  TARGET_LITTLE_NAME
4782 #define TARGET_LITTLE_NAME              "elf32-i386-sol2"
4783
4784 /* Restore default: we cannot use ELFOSABI_SOLARIS, otherwise ELFOSABI_NONE
4785    objects won't be recognized.  */
4786 #undef ELF_OSABI
4787
4788 #undef  elf32_bed
4789 #define elf32_bed                       elf32_i386_sol2_bed
4790
4791 /* The Solaris 2 ABI requires a plt symbol on all platforms.
4792
4793    Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
4794    File, p.63.  */
4795 #undef elf_backend_want_plt_sym
4796 #define elf_backend_want_plt_sym        1
4797
4798 #include "elf32-target.h"
4799
4800 /* VxWorks support.  */
4801
4802 #undef  TARGET_LITTLE_SYM
4803 #define TARGET_LITTLE_SYM               bfd_elf32_i386_vxworks_vec
4804 #undef  TARGET_LITTLE_NAME
4805 #define TARGET_LITTLE_NAME              "elf32-i386-vxworks"
4806 #undef  ELF_OSABI
4807
4808 /* Like elf_i386_link_hash_table_create but with tweaks for VxWorks.  */
4809
4810 static struct bfd_link_hash_table *
4811 elf_i386_vxworks_link_hash_table_create (bfd *abfd)
4812 {
4813   struct bfd_link_hash_table *ret;
4814   struct elf_i386_link_hash_table *htab;
4815
4816   ret = elf_i386_link_hash_table_create (abfd);
4817   if (ret)
4818     {
4819       htab = (struct elf_i386_link_hash_table *) ret;
4820       htab->is_vxworks = 1;
4821       htab->plt0_pad_byte = 0x90;
4822     }
4823
4824   return ret;
4825 }
4826
4827
4828 #undef elf_backend_relocs_compatible
4829 #undef elf_backend_post_process_headers
4830 #undef bfd_elf32_bfd_link_hash_table_create
4831 #define bfd_elf32_bfd_link_hash_table_create \
4832   elf_i386_vxworks_link_hash_table_create
4833 #undef elf_backend_add_symbol_hook
4834 #define elf_backend_add_symbol_hook \
4835   elf_vxworks_add_symbol_hook
4836 #undef elf_backend_link_output_symbol_hook
4837 #define elf_backend_link_output_symbol_hook \
4838   elf_vxworks_link_output_symbol_hook
4839 #undef elf_backend_emit_relocs
4840 #define elf_backend_emit_relocs                 elf_vxworks_emit_relocs
4841 #undef elf_backend_final_write_processing
4842 #define elf_backend_final_write_processing \
4843   elf_vxworks_final_write_processing
4844
4845 /* On VxWorks, we emit relocations against _PROCEDURE_LINKAGE_TABLE_, so
4846    define it.  */
4847 #undef elf_backend_want_plt_sym
4848 #define elf_backend_want_plt_sym        1
4849
4850 #undef  elf32_bed
4851 #define elf32_bed                               elf32_i386_vxworks_bed
4852
4853 #include "elf32-target.h"