bfd/reloc.c

   1 /* BFD support for handling relocation entries.
   2    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   3    2000, 2001, 2002, 2003, 2004
   4    Free Software Foundation, Inc.
   5    Written by Cygnus Support.
   6
   7    This file is part of BFD, the Binary File Descriptor library.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  22
  23 /*
  24 SECTION
  25         Relocations
  26
  27         BFD maintains relocations in much the same way it maintains
  28         symbols: they are left alone until required, then read in
  29         en-masse and translated into an internal form.  A common
  30         routine <<bfd_perform_relocation>> acts upon the
  31         canonical form to do the fixup.
  32
  33         Relocations are maintained on a per section basis,
  34         while symbols are maintained on a per BFD basis.
  35
  36         All that a back end has to do to fit the BFD interface is to create
  37         a <<struct reloc_cache_entry>> for each relocation
  38         in a particular section, and fill in the right bits of the structures.
  39
  40 @menu
  41 @* typedef arelent::
  42 @* howto manager::
  43 @end menu
  44
  45 */
  46
  47 /* DO compile in the reloc_code name table from libbfd.h.  */
  48 #define _BFD_MAKE_TABLE_bfd_reloc_code_real
  49
  50 #include "bfd.h"
  51 #include "sysdep.h"
  52 #include "bfdlink.h"
  53 #include "libbfd.h"
  54 /*
  55 DOCDD
  56 INODE
  57         typedef arelent, howto manager, Relocations, Relocations
  58
  59 SUBSECTION
  60         typedef arelent
  61
  62         This is the structure of a relocation entry:
  63
  64 CODE_FRAGMENT
  65 .
  66 .typedef enum bfd_reloc_status
  67 .{
  68 .  {* No errors detected.  *}
  69 .  bfd_reloc_ok,
  70 .
  71 .  {* The relocation was performed, but there was an overflow.  *}
  72 .  bfd_reloc_overflow,
  73 .
  74 .  {* The address to relocate was not within the section supplied.  *}
  75 .  bfd_reloc_outofrange,
  76 .
  77 .  {* Used by special functions.  *}
  78 .  bfd_reloc_continue,
  79 .
  80 .  {* Unsupported relocation size requested.  *}
  81 .  bfd_reloc_notsupported,
  82 .
  83 .  {* Unused.  *}
  84 .  bfd_reloc_other,
  85 .
  86 .  {* The symbol to relocate against was undefined.  *}
  87 .  bfd_reloc_undefined,
  88 .
  89 .  {* The relocation was performed, but may not be ok - presently
  90 .     generated only when linking i960 coff files with i960 b.out
  91 .     symbols.  If this type is returned, the error_message argument
  92 .     to bfd_perform_relocation will be set.  *}
  93 .  bfd_reloc_dangerous
  94 . }
  95 . bfd_reloc_status_type;
  96 .
  97 .
  98 .typedef struct reloc_cache_entry
  99 .{
 100 .  {* A pointer into the canonical table of pointers.  *}
 101 .  struct bfd_symbol **sym_ptr_ptr;
 102 .
 103 .  {* offset in section.  *}
 104 .  bfd_size_type address;
 105 .
 106 .  {* addend for relocation value.  *}
 107 .  bfd_vma addend;
 108 .
 109 .  {* Pointer to how to perform the required relocation.  *}
 110 .  reloc_howto_type *howto;
 111 .
 112 .}
 113 .arelent;
 114 .
 115 */
 116
 117 /*
 118 DESCRIPTION
 119
 120         Here is a description of each of the fields within an <<arelent>>:
 121
 122         o <<sym_ptr_ptr>>
 123
 124         The symbol table pointer points to a pointer to the symbol
 125         associated with the relocation request.  It is the pointer
 126         into the table returned by the back end's
 127         <<canonicalize_symtab>> action. @xref{Symbols}. The symbol is
 128         referenced through a pointer to a pointer so that tools like
 129         the linker can fix up all the symbols of the same name by
 130         modifying only one pointer. The relocation routine looks in
 131         the symbol and uses the base of the section the symbol is
 132         attached to and the value of the symbol as the initial
 133         relocation offset. If the symbol pointer is zero, then the
 134         section provided is looked up.
 135
 136         o <<address>>
 137
 138         The <<address>> field gives the offset in bytes from the base of
 139         the section data which owns the relocation record to the first
 140         byte of relocatable information. The actual data relocated
 141         will be relative to this point; for example, a relocation
 142         type which modifies the bottom two bytes of a four byte word
 143         would not touch the first byte pointed to in a big endian
 144         world.
 145
 146         o <<addend>>
 147
 148         The <<addend>> is a value provided by the back end to be added (!)
 149         to the relocation offset. Its interpretation is dependent upon
 150         the howto. For example, on the 68k the code:
 151
 152 |        char foo[];
 153 |        main()
 154 |                {
 155 |                return foo[0x12345678];
 156 |                }
 157
 158         Could be compiled into:
 159
 160 |        linkw fp,#-4
 161 |        moveb @@#12345678,d0
 162 |        extbl d0
 163 |        unlk fp
 164 |        rts
 165
 166         This could create a reloc pointing to <<foo>>, but leave the
 167         offset in the data, something like:
 168
 169 |RELOCATION RECORDS FOR [.text]:
 170 |offset   type      value
 171 |00000006 32        _foo
 172 |
 173 |00000000 4e56 fffc          ; linkw fp,#-4
 174 |00000004 1039 1234 5678     ; moveb @@#12345678,d0
 175 |0000000a 49c0               ; extbl d0
 176 |0000000c 4e5e               ; unlk fp
 177 |0000000e 4e75               ; rts
 178
 179         Using coff and an 88k, some instructions don't have enough
 180         space in them to represent the full address range, and
 181         pointers have to be loaded in two parts. So you'd get something like:
 182
 183 |        or.u     r13,r0,hi16(_foo+0x12345678)
 184 |        ld.b     r2,r13,lo16(_foo+0x12345678)
 185 |        jmp      r1
 186
 187         This should create two relocs, both pointing to <<_foo>>, and with
 188         0x12340000 in their addend field. The data would consist of:
 189
 190 |RELOCATION RECORDS FOR [.text]:
 191 |offset   type      value
 192 |00000002 HVRT16    _foo+0x12340000
 193 |00000006 LVRT16    _foo+0x12340000
 194 |
 195 |00000000 5da05678           ; or.u r13,r0,0x5678
 196 |00000004 1c4d5678           ; ld.b r2,r13,0x5678
 197 |00000008 f400c001           ; jmp r1
 198
 199         The relocation routine digs out the value from the data, adds
 200         it to the addend to get the original offset, and then adds the
 201         value of <<_foo>>. Note that all 32 bits have to be kept around
 202         somewhere, to cope with carry from bit 15 to bit 16.
 203
 204         One further example is the sparc and the a.out format. The
 205         sparc has a similar problem to the 88k, in that some
 206         instructions don't have room for an entire offset, but on the
 207         sparc the parts are created in odd sized lumps. The designers of
 208         the a.out format chose to not use the data within the section
 209         for storing part of the offset; all the offset is kept within
 210         the reloc. Anything in the data should be ignored.
 211
 212 |        save %sp,-112,%sp
 213 |        sethi %hi(_foo+0x12345678),%g2
 214 |        ldsb [%g2+%lo(_foo+0x12345678)],%i0
 215 |        ret
 216 |        restore
 217
 218         Both relocs contain a pointer to <<foo>>, and the offsets
 219         contain junk.
 220
 221 |RELOCATION RECORDS FOR [.text]:
 222 |offset   type      value
 223 |00000004 HI22      _foo+0x12345678
 224 |00000008 LO10      _foo+0x12345678
 225 |
 226 |00000000 9de3bf90     ; save %sp,-112,%sp
 227 |00000004 05000000     ; sethi %hi(_foo+0),%g2
 228 |00000008 f048a000     ; ldsb [%g2+%lo(_foo+0)],%i0
 229 |0000000c 81c7e008     ; ret
 230 |00000010 81e80000     ; restore
 231
 232         o <<howto>>
 233
 234         The <<howto>> field can be imagined as a
 235         relocation instruction. It is a pointer to a structure which
 236         contains information on what to do with all of the other
 237         information in the reloc record and data section. A back end
 238         would normally have a relocation instruction set and turn
 239         relocations into pointers to the correct structure on input -
 240         but it would be possible to create each howto field on demand.
 241
 242 */
 243
 244 /*
 245 SUBSUBSECTION
 246         <<enum complain_overflow>>
 247
 248         Indicates what sort of overflow checking should be done when
 249         performing a relocation.
 250
 251 CODE_FRAGMENT
 252 .
 253 .enum complain_overflow
 254 .{
 255 .  {* Do not complain on overflow.  *}
 256 .  complain_overflow_dont,
 257 .
 258 .  {* Complain if the bitfield overflows, whether it is considered
 259 .     as signed or unsigned.  *}
 260 .  complain_overflow_bitfield,
 261 .
 262 .  {* Complain if the value overflows when considered as signed
 263 .     number.  *}
 264 .  complain_overflow_signed,
 265 .
 266 .  {* Complain if the value overflows when considered as an
 267 .     unsigned number.  *}
 268 .  complain_overflow_unsigned
 269 .};
 270
 271 */
 272
 273 /*
 274 SUBSUBSECTION
 275         <<reloc_howto_type>>
 276
 277         The <<reloc_howto_type>> is a structure which contains all the
 278         information that libbfd needs to know to tie up a back end's data.
 279
 280 CODE_FRAGMENT
 281 .struct bfd_symbol;             {* Forward declaration.  *}
 282 .
 283 .struct reloc_howto_struct
 284 .{
 285 .  {*  The type field has mainly a documentary use - the back end can
 286 .      do what it wants with it, though normally the back end's
 287 .      external idea of what a reloc number is stored
 288 .      in this field.  For example, a PC relative word relocation
 289 .      in a coff environment has the type 023 - because that's
 290 .      what the outside world calls a R_PCRWORD reloc.  *}
 291 .  unsigned int type;
 292 .
 293 .  {*  The value the final relocation is shifted right by.  This drops
 294 .      unwanted data from the relocation.  *}
 295 .  unsigned int rightshift;
 296 .
 297 .  {*  The size of the item to be relocated.  This is *not* a
 298 .      power-of-two measure.  To get the number of bytes operated
 299 .      on by a type of relocation, use bfd_get_reloc_size.  *}
 300 .  int size;
 301 .
 302 .  {*  The number of bits in the item to be relocated.  This is used
 303 .      when doing overflow checking.  *}
 304 .  unsigned int bitsize;
 305 .
 306 .  {*  Notes that the relocation is relative to the location in the
 307 .      data section of the addend.  The relocation function will
 308 .      subtract from the relocation value the address of the location
 309 .      being relocated.  *}
 310 .  bfd_boolean pc_relative;
 311 .
 312 .  {*  The bit position of the reloc value in the destination.
 313 .      The relocated value is left shifted by this amount.  *}
 314 .  unsigned int bitpos;
 315 .
 316 .  {* What type of overflow error should be checked for when
 317 .     relocating.  *}
 318 .  enum complain_overflow complain_on_overflow;
 319 .
 320 .  {* If this field is non null, then the supplied function is
 321 .     called rather than the normal function.  This allows really
 322 .     strange relocation methods to be accommodated (e.g., i960 callj
 323 .     instructions).  *}
 324 .  bfd_reloc_status_type (*special_function)
 325 .    (bfd *, arelent *, struct bfd_symbol *, void *, asection *,
 326 .     bfd *, char **);
 327 .
 328 .  {* The textual name of the relocation type.  *}
 329 .  char *name;
 330 .
 331 .  {* Some formats record a relocation addend in the section contents
 332 .     rather than with the relocation.  For ELF formats this is the
 333 .     distinction between USE_REL and USE_RELA (though the code checks
 334 .     for USE_REL == 1/0).  The value of this field is TRUE if the
 335 .     addend is recorded with the section contents; when performing a
 336 .     partial link (ld -r) the section contents (the data) will be
 337 .     modified.  The value of this field is FALSE if addends are
 338 .     recorded with the relocation (in arelent.addend); when performing
 339 .     a partial link the relocation will be modified.
 340 .     All relocations for all ELF USE_RELA targets should set this field
 341 .     to FALSE (values of TRUE should be looked on with suspicion).
 342 .     However, the converse is not true: not all relocations of all ELF
 343 .     USE_REL targets set this field to TRUE.  Why this is so is peculiar
 344 .     to each particular target.  For relocs that aren't used in partial
 345 .     links (e.g. GOT stuff) it doesn't matter what this is set to.  *}
 346 .  bfd_boolean partial_inplace;
 347 .
 348 .  {* src_mask selects the part of the instruction (or data) to be used
 349 .     in the relocation sum.  If the target relocations don't have an
 350 .     addend in the reloc, eg. ELF USE_REL, src_mask will normally equal
 351 .     dst_mask to extract the addend from the section contents.  If
 352 .     relocations do have an addend in the reloc, eg. ELF USE_RELA, this
 353 .     field should be zero.  Non-zero values for ELF USE_RELA targets are
 354 .     bogus as in those cases the value in the dst_mask part of the
 355 .     section contents should be treated as garbage.  *}
 356 .  bfd_vma src_mask;
 357 .
 358 .  {* dst_mask selects which parts of the instruction (or data) are
 359 .     replaced with a relocated value.  *}
 360 .  bfd_vma dst_mask;
 361 .
 362 .  {* When some formats create PC relative instructions, they leave
 363 .     the value of the pc of the place being relocated in the offset
 364 .     slot of the instruction, so that a PC relative relocation can
 365 .     be made just by adding in an ordinary offset (e.g., sun3 a.out).
 366 .     Some formats leave the displacement part of an instruction
 367 .     empty (e.g., m88k bcs); this flag signals the fact.  *}
 368 .  bfd_boolean pcrel_offset;
 369 .};
 370 .
 371 */
 372
 373 /*
 374 FUNCTION
 375         The HOWTO Macro
 376
 377 DESCRIPTION
 378         The HOWTO define is horrible and will go away.
 379
 380 .#define HOWTO(C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC) \
 381 .  { (unsigned) C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC }
 382
 383 DESCRIPTION
 384         And will be replaced with the totally magic way. But for the
 385         moment, we are compatible, so do it this way.
 386
 387 .#define NEWHOWTO(FUNCTION, NAME, SIZE, REL, IN) \
 388 .  HOWTO (0, 0, SIZE, 0, REL, 0, complain_overflow_dont, FUNCTION, \
 389 .         NAME, FALSE, 0, 0, IN)
 390 .
 391
 392 DESCRIPTION
 393         This is used to fill in an empty howto entry in an array.
 394
 395 .#define EMPTY_HOWTO(C) \
 396 .  HOWTO ((C), 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL, \
 397 .         NULL, FALSE, 0, 0, FALSE)
 398 .
 399
 400 DESCRIPTION
 401         Helper routine to turn a symbol into a relocation value.
 402
 403 .#define HOWTO_PREPARE(relocation, symbol)               \
 404 .  {                                                     \
 405 .    if (symbol != NULL)                                 \
 406 .      {                                                 \
 407 .        if (bfd_is_com_section (symbol->section))       \
 408 .          {                                             \
 409 .            relocation = 0;                             \
 410 .          }                                             \
 411 .        else                                            \
 412 .          {                                             \
 413 .            relocation = symbol->value;                 \
 414 .          }                                             \
 415 .      }                                                 \
 416 .  }
 417 .
 418 */
 419
 420 /*
 421 FUNCTION
 422         bfd_get_reloc_size
 423
 424 SYNOPSIS
 425         unsigned int bfd_get_reloc_size (reloc_howto_type *);
 426
 427 DESCRIPTION
 428         For a reloc_howto_type that operates on a fixed number of bytes,
 429         this returns the number of bytes operated on.
 430  */
 431
 432 unsigned int
 433 bfd_get_reloc_size (reloc_howto_type *howto)
 434 {
 435   switch (howto->size)
 436     {
 437     case 0: return 1;
 438     case 1: return 2;
 439     case 2: return 4;
 440     case 3: return 0;
 441     case 4: return 8;
 442     case 8: return 16;
 443     case -2: return 4;
 444     default: abort ();
 445     }
 446 }
 447
 448 /*
 449 TYPEDEF
 450         arelent_chain
 451
 452 DESCRIPTION
 453
 454         How relocs are tied together in an <<asection>>:
 455
 456 .typedef struct relent_chain
 457 .{
 458 .  arelent relent;
 459 .  struct relent_chain *next;
 460 .}
 461 .arelent_chain;
 462 .
 463 */
 464
 465 /* N_ONES produces N one bits, without overflowing machine arithmetic.  */
 466 #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1)
 467
 468 /*
 469 FUNCTION
 470         bfd_check_overflow
 471
 472 SYNOPSIS
 473         bfd_reloc_status_type bfd_check_overflow
 474           (enum complain_overflow how,
 475            unsigned int bitsize,
 476            unsigned int rightshift,
 477            unsigned int addrsize,
 478            bfd_vma relocation);
 479
 480 DESCRIPTION
 481         Perform overflow checking on @var{relocation} which has
 482         @var{bitsize} significant bits and will be shifted right by
 483         @var{rightshift} bits, on a machine with addresses containing
 484         @var{addrsize} significant bits.  The result is either of
 485         @code{bfd_reloc_ok} or @code{bfd_reloc_overflow}.
 486
 487 */
 488
 489 bfd_reloc_status_type
 490 bfd_check_overflow (enum complain_overflow how,
 491                     unsigned int bitsize,
 492                     unsigned int rightshift,
 493                     unsigned int addrsize,
 494                     bfd_vma relocation)
 495 {
 496   bfd_vma fieldmask, addrmask, signmask, ss, a;
 497   bfd_reloc_status_type flag = bfd_reloc_ok;
 498
 499   a = relocation;
 500
 501   /* Note: BITSIZE should always be <= ADDRSIZE, but in case it's not,
 502      we'll be permissive: extra bits in the field mask will
 503      automatically extend the address mask for purposes of the
 504      overflow check.  */
 505   fieldmask = N_ONES (bitsize);
 506   addrmask = N_ONES (addrsize) | fieldmask;
 507
 508   switch (how)
 509     {
 510     case complain_overflow_dont:
 511       break;
 512
 513     case complain_overflow_signed:
 514       /* If any sign bits are set, all sign bits must be set.  That
 515          is, A must be a valid negative address after shifting.  */
 516       a = (a & addrmask) >> rightshift;
 517       signmask = ~ (fieldmask >> 1);
 518       ss = a & signmask;
 519       if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
 520         flag = bfd_reloc_overflow;
 521       break;
 522
 523     case complain_overflow_unsigned:
 524       /* We have an overflow if the address does not fit in the field.  */
 525       a = (a & addrmask) >> rightshift;
 526       if ((a & ~ fieldmask) != 0)
 527         flag = bfd_reloc_overflow;
 528       break;
 529
 530     case complain_overflow_bitfield:
 531       /* Bitfields are sometimes signed, sometimes unsigned.  We
 532          explicitly allow an address wrap too, which means a bitfield
 533          of n bits is allowed to store -2**n to 2**n-1.  Thus overflow
 534          if the value has some, but not all, bits set outside the
 535          field.  */
 536       a >>= rightshift;
 537       ss = a & ~ fieldmask;
 538       if (ss != 0 && ss != (((bfd_vma) -1 >> rightshift) & ~ fieldmask))
 539         flag = bfd_reloc_overflow;
 540       break;
 541
 542     default:
 543       abort ();
 544     }
 545
 546   return flag;
 547 }
 548
 549 /*
 550 FUNCTION
 551         bfd_perform_relocation
 552
 553 SYNOPSIS
 554         bfd_reloc_status_type bfd_perform_relocation
 555           (bfd *abfd,
 556            arelent *reloc_entry,
 557            void *data,
 558            asection *input_section,
 559            bfd *output_bfd,
 560            char **error_message);
 561
 562 DESCRIPTION
 563         If @var{output_bfd} is supplied to this function, the
 564         generated image will be relocatable; the relocations are
 565         copied to the output file after they have been changed to
 566         reflect the new state of the world. There are two ways of
 567         reflecting the results of partial linkage in an output file:
 568         by modifying the output data in place, and by modifying the
 569         relocation record.  Some native formats (e.g., basic a.out and
 570         basic coff) have no way of specifying an addend in the
 571         relocation type, so the addend has to go in the output data.
 572         This is no big deal since in these formats the output data
 573         slot will always be big enough for the addend. Complex reloc
 574         types with addends were invented to solve just this problem.
 575         The @var{error_message} argument is set to an error message if
 576         this return @code{bfd_reloc_dangerous}.
 577
 578 */
 579
 580 bfd_reloc_status_type
 581 bfd_perform_relocation (bfd *abfd,
 582                         arelent *reloc_entry,
 583                         void *data,
 584                         asection *input_section,
 585                         bfd *output_bfd,
 586                         char **error_message)
 587 {
 588   bfd_vma relocation;
 589   bfd_reloc_status_type flag = bfd_reloc_ok;
 590   bfd_size_type octets = reloc_entry->address * bfd_octets_per_byte (abfd);
 591   bfd_vma output_base = 0;
 592   reloc_howto_type *howto = reloc_entry->howto;
 593   asection *reloc_target_output_section;
 594   asymbol *symbol;
 595
 596   symbol = *(reloc_entry->sym_ptr_ptr);
 597   if (bfd_is_abs_section (symbol->section)
 598       && output_bfd != NULL)
 599     {
 600       reloc_entry->address += input_section->output_offset;
 601       return bfd_reloc_ok;
 602     }
 603
 604   /* If we are not producing relocatable output, return an error if
 605      the symbol is not defined.  An undefined weak symbol is
 606      considered to have a value of zero (SVR4 ABI, p. 4-27).  */
 607   if (bfd_is_und_section (symbol->section)
 608       && (symbol->flags & BSF_WEAK) == 0
 609       && output_bfd == NULL)
 610     flag = bfd_reloc_undefined;
 611
 612   /* If there is a function supplied to handle this relocation type,
 613      call it.  It'll return `bfd_reloc_continue' if further processing
 614      can be done.  */
 615   if (howto->special_function)
 616     {
 617       bfd_reloc_status_type cont;
 618       cont = howto->special_function (abfd, reloc_entry, symbol, data,
 619                                       input_section, output_bfd,
 620                                       error_message);
 621       if (cont != bfd_reloc_continue)
 622         return cont;
 623     }
 624
 625   /* Is the address of the relocation really within the section?  */
 626   if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
 627     return bfd_reloc_outofrange;
 628
 629   /* Work out which section the relocation is targeted at and the
 630      initial relocation command value.  */
 631
 632   /* Get symbol value.  (Common symbols are special.)  */
 633   if (bfd_is_com_section (symbol->section))
 634     relocation = 0;
 635   else
 636     relocation = symbol->value;
 637
 638   reloc_target_output_section = symbol->section->output_section;
 639
 640   /* Convert input-section-relative symbol value to absolute.  */
 641   if ((output_bfd && ! howto->partial_inplace)
 642       || reloc_target_output_section == NULL)
 643     output_base = 0;
 644   else
 645     output_base = reloc_target_output_section->vma;
 646
 647   relocation += output_base + symbol->section->output_offset;
 648
 649   /* Add in supplied addend.  */
 650   relocation += reloc_entry->addend;
 651
 652   /* Here the variable relocation holds the final address of the
 653      symbol we are relocating against, plus any addend.  */
 654
 655   if (howto->pc_relative)
 656     {
 657       /* This is a PC relative relocation.  We want to set RELOCATION
 658          to the distance between the address of the symbol and the
 659          location.  RELOCATION is already the address of the symbol.
 660
 661          We start by subtracting the address of the section containing
 662          the location.
 663
 664          If pcrel_offset is set, we must further subtract the position
 665          of the location within the section.  Some targets arrange for
 666          the addend to be the negative of the position of the location
 667          within the section; for example, i386-aout does this.  For
 668          i386-aout, pcrel_offset is FALSE.  Some other targets do not
 669          include the position of the location; for example, m88kbcs,
 670          or ELF.  For those targets, pcrel_offset is TRUE.
 671
 672          If we are producing relocatable output, then we must ensure
 673          that this reloc will be correctly computed when the final
 674          relocation is done.  If pcrel_offset is FALSE we want to wind
 675          up with the negative of the location within the section,
 676          which means we must adjust the existing addend by the change
 677          in the location within the section.  If pcrel_offset is TRUE
 678          we do not want to adjust the existing addend at all.
 679
 680          FIXME: This seems logical to me, but for the case of
 681          producing relocatable output it is not what the code
 682          actually does.  I don't want to change it, because it seems
 683          far too likely that something will break.  */
 684
 685       relocation -=
 686         input_section->output_section->vma + input_section->output_offset;
 687
 688       if (howto->pcrel_offset)
 689         relocation -= reloc_entry->address;
 690     }
 691
 692   if (output_bfd != NULL)
 693     {
 694       if (! howto->partial_inplace)
 695         {
 696           /* This is a partial relocation, and we want to apply the relocation
 697              to the reloc entry rather than the raw data. Modify the reloc
 698              inplace to reflect what we now know.  */
 699           reloc_entry->addend = relocation;
 700           reloc_entry->address += input_section->output_offset;
 701           return flag;
 702         }
 703       else
 704         {
 705           /* This is a partial relocation, but inplace, so modify the
 706              reloc record a bit.
 707
 708              If we've relocated with a symbol with a section, change
 709              into a ref to the section belonging to the symbol.  */
 710
 711           reloc_entry->address += input_section->output_offset;
 712
 713           /* WTF?? */
 714           if (abfd->xvec->flavour == bfd_target_coff_flavour
 715               && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
 716               && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
 717             {
 718 #if 1
 719               /* For m68k-coff, the addend was being subtracted twice during
 720                  relocation with -r.  Removing the line below this comment
 721                  fixes that problem; see PR 2953.
 722
 723 However, Ian wrote the following, regarding removing the line below,
 724 which explains why it is still enabled:  --djm
 725
 726 If you put a patch like that into BFD you need to check all the COFF
 727 linkers.  I am fairly certain that patch will break coff-i386 (e.g.,
 728 SCO); see coff_i386_reloc in coff-i386.c where I worked around the
 729 problem in a different way.  There may very well be a reason that the
 730 code works as it does.
 731
 732 Hmmm.  The first obvious point is that bfd_perform_relocation should
 733 not have any tests that depend upon the flavour.  It's seem like
 734 entirely the wrong place for such a thing.  The second obvious point
 735 is that the current code ignores the reloc addend when producing
 736 relocatable output for COFF.  That's peculiar.  In fact, I really
 737 have no idea what the point of the line you want to remove is.
 738
 739 A typical COFF reloc subtracts the old value of the symbol and adds in
 740 the new value to the location in the object file (if it's a pc
 741 relative reloc it adds the difference between the symbol value and the
 742 location).  When relocating we need to preserve that property.
 743
 744 BFD handles this by setting the addend to the negative of the old
 745 value of the symbol.  Unfortunately it handles common symbols in a
 746 non-standard way (it doesn't subtract the old value) but that's a
 747 different story (we can't change it without losing backward
 748 compatibility with old object files) (coff-i386 does subtract the old
 749 value, to be compatible with existing coff-i386 targets, like SCO).
 750
 751 So everything works fine when not producing relocatable output.  When
 752 we are producing relocatable output, logically we should do exactly
 753 what we do when not producing relocatable output.  Therefore, your
 754 patch is correct.  In fact, it should probably always just set
 755 reloc_entry->addend to 0 for all cases, since it is, in fact, going to
 756 add the value into the object file.  This won't hurt the COFF code,
 757 which doesn't use the addend; I'm not sure what it will do to other
 758 formats (the thing to check for would be whether any formats both use
 759 the addend and set partial_inplace).
 760
 761 When I wanted to make coff-i386 produce relocatable output, I ran
 762 into the problem that you are running into: I wanted to remove that
 763 line.  Rather than risk it, I made the coff-i386 relocs use a special
 764 function; it's coff_i386_reloc in coff-i386.c.  The function
 765 specifically adds the addend field into the object file, knowing that
 766 bfd_perform_relocation is not going to.  If you remove that line, then
 767 coff-i386.c will wind up adding the addend field in twice.  It's
 768 trivial to fix; it just needs to be done.
 769
 770 The problem with removing the line is just that it may break some
 771 working code.  With BFD it's hard to be sure of anything.  The right
 772 way to deal with this is simply to build and test at least all the
 773 supported COFF targets.  It should be straightforward if time and disk
 774 space consuming.  For each target:
 775     1) build the linker
 776     2) generate some executable, and link it using -r (I would
 777        probably use paranoia.o and link against newlib/libc.a, which
 778        for all the supported targets would be available in
 779        /usr/cygnus/progressive/H-host/target/lib/libc.a).
 780     3) make the change to reloc.c
 781     4) rebuild the linker
 782     5) repeat step 2
 783     6) if the resulting object files are the same, you have at least
 784        made it no worse
 785     7) if they are different you have to figure out which version is
 786        right
 787 */
 788               relocation -= reloc_entry->addend;
 789 #endif
 790               reloc_entry->addend = 0;
 791             }
 792           else
 793             {
 794               reloc_entry->addend = relocation;
 795             }
 796         }
 797     }
 798   else
 799     {
 800       reloc_entry->addend = 0;
 801     }
 802
 803   /* FIXME: This overflow checking is incomplete, because the value
 804      might have overflowed before we get here.  For a correct check we
 805      need to compute the value in a size larger than bitsize, but we
 806      can't reasonably do that for a reloc the same size as a host
 807      machine word.
 808      FIXME: We should also do overflow checking on the result after
 809      adding in the value contained in the object file.  */
 810   if (howto->complain_on_overflow != complain_overflow_dont
 811       && flag == bfd_reloc_ok)
 812     flag = bfd_check_overflow (howto->complain_on_overflow,
 813                                howto->bitsize,
 814                                howto->rightshift,
 815                                bfd_arch_bits_per_address (abfd),
 816                                relocation);
 817
 818   /* Either we are relocating all the way, or we don't want to apply
 819      the relocation to the reloc entry (probably because there isn't
 820      any room in the output format to describe addends to relocs).  */
 821
 822   /* The cast to bfd_vma avoids a bug in the Alpha OSF/1 C compiler
 823      (OSF version 1.3, compiler version 3.11).  It miscompiles the
 824      following program:
 825
 826      struct str
 827      {
 828        unsigned int i0;
 829      } s = { 0 };
 830
 831      int
 832      main ()
 833      {
 834        unsigned long x;
 835
 836        x = 0x100000000;
 837        x <<= (unsigned long) s.i0;
 838        if (x == 0)
 839          printf ("failed\n");
 840        else
 841          printf ("succeeded (%lx)\n", x);
 842      }
 843      */
 844
 845   relocation >>= (bfd_vma) howto->rightshift;
 846
 847   /* Shift everything up to where it's going to be used.  */
 848   relocation <<= (bfd_vma) howto->bitpos;
 849
 850   /* Wait for the day when all have the mask in them.  */
 851
 852   /* What we do:
 853      i instruction to be left alone
 854      o offset within instruction
 855      r relocation offset to apply
 856      S src mask
 857      D dst mask
 858      N ~dst mask
 859      A part 1
 860      B part 2
 861      R result
 862
 863      Do this:
 864      ((  i i i i i o o o o o  from bfd_get<size>
 865      and           S S S S S) to get the size offset we want
 866      +   r r r r r r r r r r) to get the final value to place
 867      and           D D D D D  to chop to right size
 868      -----------------------
 869      =             A A A A A
 870      And this:
 871      (   i i i i i o o o o o  from bfd_get<size>
 872      and N N N N N          ) get instruction
 873      -----------------------
 874      =   B B B B B
 875
 876      And then:
 877      (   B B B B B
 878      or            A A A A A)
 879      -----------------------
 880      =   R R R R R R R R R R  put into bfd_put<size>
 881      */
 882
 883 #define DOIT(x) \
 884   x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) +  relocation) & howto->dst_mask))
 885
 886   switch (howto->size)
 887     {
 888     case 0:
 889       {
 890         char x = bfd_get_8 (abfd, (char *) data + octets);
 891         DOIT (x);
 892         bfd_put_8 (abfd, x, (unsigned char *) data + octets);
 893       }
 894       break;
 895
 896     case 1:
 897       {
 898         short x = bfd_get_16 (abfd, (bfd_byte *) data + octets);
 899         DOIT (x);
 900         bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data + octets);
 901       }
 902       break;
 903     case 2:
 904       {
 905         long x = bfd_get_32 (abfd, (bfd_byte *) data + octets);
 906         DOIT (x);
 907         bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 908       }
 909       break;
 910     case -2:
 911       {
 912         long x = bfd_get_32 (abfd, (bfd_byte *) data + octets);
 913         relocation = -relocation;
 914         DOIT (x);
 915         bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 916       }
 917       break;
 918
 919     case -1:
 920       {
 921         long x = bfd_get_16 (abfd, (bfd_byte *) data + octets);
 922         relocation = -relocation;
 923         DOIT (x);
 924         bfd_put_16 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 925       }
 926       break;
 927
 928     case 3:
 929       /* Do nothing */
 930       break;
 931
 932     case 4:
 933 #ifdef BFD64
 934       {
 935         bfd_vma x = bfd_get_64 (abfd, (bfd_byte *) data + octets);
 936         DOIT (x);
 937         bfd_put_64 (abfd, x, (bfd_byte *) data + octets);
 938       }
 939 #else
 940       abort ();
 941 #endif
 942       break;
 943     default:
 944       return bfd_reloc_other;
 945     }
 946
 947   return flag;
 948 }
 949
 950 /*
 951 FUNCTION
 952         bfd_install_relocation
 953
 954 SYNOPSIS
 955         bfd_reloc_status_type bfd_install_relocation
 956           (bfd *abfd,
 957            arelent *reloc_entry,
 958            void *data, bfd_vma data_start,
 959            asection *input_section,
 960            char **error_message);
 961
 962 DESCRIPTION
 963         This looks remarkably like <<bfd_perform_relocation>>, except it
 964         does not expect that the section contents have been filled in.
 965         I.e., it's suitable for use when creating, rather than applying
 966         a relocation.
 967
 968         For now, this function should be considered reserved for the
 969         assembler.
 970 */
 971
 972 bfd_reloc_status_type
 973 bfd_install_relocation (bfd *abfd,
 974                         arelent *reloc_entry,
 975                         void *data_start,
 976                         bfd_vma data_start_offset,
 977                         asection *input_section,
 978                         char **error_message)
 979 {
 980   bfd_vma relocation;
 981   bfd_reloc_status_type flag = bfd_reloc_ok;
 982   bfd_size_type octets = reloc_entry->address * bfd_octets_per_byte (abfd);
 983   bfd_vma output_base = 0;
 984   reloc_howto_type *howto = reloc_entry->howto;
 985   asection *reloc_target_output_section;
 986   asymbol *symbol;
 987   bfd_byte *data;
 988
 989   symbol = *(reloc_entry->sym_ptr_ptr);
 990   if (bfd_is_abs_section (symbol->section))
 991     {
 992       reloc_entry->address += input_section->output_offset;
 993       return bfd_reloc_ok;
 994     }
 995
 996   /* If there is a function supplied to handle this relocation type,
 997      call it.  It'll return `bfd_reloc_continue' if further processing
 998      can be done.  */
 999   if (howto->special_function)
1000     {
1001       bfd_reloc_status_type cont;
1002
1003       /* XXX - The special_function calls haven't been fixed up to deal
1004          with creating new relocations and section contents.  */
1005       cont = howto->special_function (abfd, reloc_entry, symbol,
1006                                       /* XXX - Non-portable! */
1007                                       ((bfd_byte *) data_start
1008                                        - data_start_offset),
1009                                       input_section, abfd, error_message);
1010       if (cont != bfd_reloc_continue)
1011         return cont;
1012     }
1013
1014   /* Is the address of the relocation really within the section?  */
1015   if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1016     return bfd_reloc_outofrange;
1017
1018   /* Work out which section the relocation is targeted at and the
1019      initial relocation command value.  */
1020
1021   /* Get symbol value.  (Common symbols are special.)  */
1022   if (bfd_is_com_section (symbol->section))
1023     relocation = 0;
1024   else
1025     relocation = symbol->value;
1026
1027   reloc_target_output_section = symbol->section->output_section;
1028
1029   /* Convert input-section-relative symbol value to absolute.  */
1030   if (! howto->partial_inplace)
1031     output_base = 0;
1032   else
1033     output_base = reloc_target_output_section->vma;
1034
1035   relocation += output_base + symbol->section->output_offset;
1036
1037   /* Add in supplied addend.  */
1038   relocation += reloc_entry->addend;
1039
1040   /* Here the variable relocation holds the final address of the
1041      symbol we are relocating against, plus any addend.  */
1042
1043   if (howto->pc_relative)
1044     {
1045       /* This is a PC relative relocation.  We want to set RELOCATION
1046          to the distance between the address of the symbol and the
1047          location.  RELOCATION is already the address of the symbol.
1048
1049          We start by subtracting the address of the section containing
1050          the location.
1051
1052          If pcrel_offset is set, we must further subtract the position
1053          of the location within the section.  Some targets arrange for
1054          the addend to be the negative of the position of the location
1055          within the section; for example, i386-aout does this.  For
1056          i386-aout, pcrel_offset is FALSE.  Some other targets do not
1057          include the position of the location; for example, m88kbcs,
1058          or ELF.  For those targets, pcrel_offset is TRUE.
1059
1060          If we are producing relocatable output, then we must ensure
1061          that this reloc will be correctly computed when the final
1062          relocation is done.  If pcrel_offset is FALSE we want to wind
1063          up with the negative of the location within the section,
1064          which means we must adjust the existing addend by the change
1065          in the location within the section.  If pcrel_offset is TRUE
1066          we do not want to adjust the existing addend at all.
1067
1068          FIXME: This seems logical to me, but for the case of
1069          producing relocatable output it is not what the code
1070          actually does.  I don't want to change it, because it seems
1071          far too likely that something will break.  */
1072
1073       relocation -=
1074         input_section->output_section->vma + input_section->output_offset;
1075
1076       if (howto->pcrel_offset && howto->partial_inplace)
1077         relocation -= reloc_entry->address;
1078     }
1079
1080   if (! howto->partial_inplace)
1081     {
1082       /* This is a partial relocation, and we want to apply the relocation
1083          to the reloc entry rather than the raw data. Modify the reloc
1084          inplace to reflect what we now know.  */
1085       reloc_entry->addend = relocation;
1086       reloc_entry->address += input_section->output_offset;
1087       return flag;
1088     }
1089   else
1090     {
1091       /* This is a partial relocation, but inplace, so modify the
1092          reloc record a bit.
1093
1094          If we've relocated with a symbol with a section, change
1095          into a ref to the section belonging to the symbol.  */
1096       reloc_entry->address += input_section->output_offset;
1097
1098       /* WTF?? */
1099       if (abfd->xvec->flavour == bfd_target_coff_flavour
1100           && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
1101           && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
1102         {
1103 #if 1
1104 /* For m68k-coff, the addend was being subtracted twice during
1105    relocation with -r.  Removing the line below this comment
1106    fixes that problem; see PR 2953.
1107
1108 However, Ian wrote the following, regarding removing the line below,
1109 which explains why it is still enabled:  --djm
1110
1111 If you put a patch like that into BFD you need to check all the COFF
1112 linkers.  I am fairly certain that patch will break coff-i386 (e.g.,
1113 SCO); see coff_i386_reloc in coff-i386.c where I worked around the
1114 problem in a different way.  There may very well be a reason that the
1115 code works as it does.
1116
1117 Hmmm.  The first obvious point is that bfd_install_relocation should
1118 not have any tests that depend upon the flavour.  It's seem like
1119 entirely the wrong place for such a thing.  The second obvious point
1120 is that the current code ignores the reloc addend when producing
1121 relocatable output for COFF.  That's peculiar.  In fact, I really
1122 have no idea what the point of the line you want to remove is.
1123
1124 A typical COFF reloc subtracts the old value of the symbol and adds in
1125 the new value to the location in the object file (if it's a pc
1126 relative reloc it adds the difference between the symbol value and the
1127 location).  When relocating we need to preserve that property.
1128
1129 BFD handles this by setting the addend to the negative of the old
1130 value of the symbol.  Unfortunately it handles common symbols in a
1131 non-standard way (it doesn't subtract the old value) but that's a
1132 different story (we can't change it without losing backward
1133 compatibility with old object files) (coff-i386 does subtract the old
1134 value, to be compatible with existing coff-i386 targets, like SCO).
1135
1136 So everything works fine when not producing relocatable output.  When
1137 we are producing relocatable output, logically we should do exactly
1138 what we do when not producing relocatable output.  Therefore, your
1139 patch is correct.  In fact, it should probably always just set
1140 reloc_entry->addend to 0 for all cases, since it is, in fact, going to
1141 add the value into the object file.  This won't hurt the COFF code,
1142 which doesn't use the addend; I'm not sure what it will do to other
1143 formats (the thing to check for would be whether any formats both use
1144 the addend and set partial_inplace).
1145
1146 When I wanted to make coff-i386 produce relocatable output, I ran
1147 into the problem that you are running into: I wanted to remove that
1148 line.  Rather than risk it, I made the coff-i386 relocs use a special
1149 function; it's coff_i386_reloc in coff-i386.c.  The function
1150 specifically adds the addend field into the object file, knowing that
1151 bfd_install_relocation is not going to.  If you remove that line, then
1152 coff-i386.c will wind up adding the addend field in twice.  It's
1153 trivial to fix; it just needs to be done.
1154
1155 The problem with removing the line is just that it may break some
1156 working code.  With BFD it's hard to be sure of anything.  The right
1157 way to deal with this is simply to build and test at least all the
1158 supported COFF targets.  It should be straightforward if time and disk
1159 space consuming.  For each target:
1160     1) build the linker
1161     2) generate some executable, and link it using -r (I would
1162        probably use paranoia.o and link against newlib/libc.a, which
1163        for all the supported targets would be available in
1164        /usr/cygnus/progressive/H-host/target/lib/libc.a).
1165     3) make the change to reloc.c
1166     4) rebuild the linker
1167     5) repeat step 2
1168     6) if the resulting object files are the same, you have at least
1169        made it no worse
1170     7) if they are different you have to figure out which version is
1171        right.  */
1172           relocation -= reloc_entry->addend;
1173 #endif
1174           reloc_entry->addend = 0;
1175         }
1176       else
1177         {
1178           reloc_entry->addend = relocation;
1179         }
1180     }
1181
1182   /* FIXME: This overflow checking is incomplete, because the value
1183      might have overflowed before we get here.  For a correct check we
1184      need to compute the value in a size larger than bitsize, but we
1185      can't reasonably do that for a reloc the same size as a host
1186      machine word.
1187      FIXME: We should also do overflow checking on the result after
1188      adding in the value contained in the object file.  */
1189   if (howto->complain_on_overflow != complain_overflow_dont)
1190     flag = bfd_check_overflow (howto->complain_on_overflow,
1191                                howto->bitsize,
1192                                howto->rightshift,
1193                                bfd_arch_bits_per_address (abfd),
1194                                relocation);
1195
1196   /* Either we are relocating all the way, or we don't want to apply
1197      the relocation to the reloc entry (probably because there isn't
1198      any room in the output format to describe addends to relocs).  */
1199
1200   /* The cast to bfd_vma avoids a bug in the Alpha OSF/1 C compiler
1201      (OSF version 1.3, compiler version 3.11).  It miscompiles the
1202      following program:
1203
1204      struct str
1205      {
1206        unsigned int i0;
1207      } s = { 0 };
1208
1209      int
1210      main ()
1211      {
1212        unsigned long x;
1213
1214        x = 0x100000000;
1215        x <<= (unsigned long) s.i0;
1216        if (x == 0)
1217          printf ("failed\n");
1218        else
1219          printf ("succeeded (%lx)\n", x);
1220      }
1221      */
1222
1223   relocation >>= (bfd_vma) howto->rightshift;
1224
1225   /* Shift everything up to where it's going to be used.  */
1226   relocation <<= (bfd_vma) howto->bitpos;
1227
1228   /* Wait for the day when all have the mask in them.  */
1229
1230   /* What we do:
1231      i instruction to be left alone
1232      o offset within instruction
1233      r relocation offset to apply
1234      S src mask
1235      D dst mask
1236      N ~dst mask
1237      A part 1
1238      B part 2
1239      R result
1240
1241      Do this:
1242      ((  i i i i i o o o o o  from bfd_get<size>
1243      and           S S S S S) to get the size offset we want
1244      +   r r r r r r r r r r) to get the final value to place
1245      and           D D D D D  to chop to right size
1246      -----------------------
1247      =             A A A A A
1248      And this:
1249      (   i i i i i o o o o o  from bfd_get<size>
1250      and N N N N N          ) get instruction
1251      -----------------------
1252      =   B B B B B
1253
1254      And then:
1255      (   B B B B B
1256      or            A A A A A)
1257      -----------------------
1258      =   R R R R R R R R R R  put into bfd_put<size>
1259      */
1260
1261 #define DOIT(x) \
1262   x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) +  relocation) & howto->dst_mask))
1263
1264   data = (bfd_byte *) data_start + (octets - data_start_offset);
1265
1266   switch (howto->size)
1267     {
1268     case 0:
1269       {
1270         char x = bfd_get_8 (abfd, data);
1271         DOIT (x);
1272         bfd_put_8 (abfd, x, data);
1273       }
1274       break;
1275
1276     case 1:
1277       {
1278         short x = bfd_get_16 (abfd, data);
1279         DOIT (x);
1280         bfd_put_16 (abfd, (bfd_vma) x, data);
1281       }
1282       break;
1283     case 2:
1284       {
1285         long x = bfd_get_32 (abfd, data);
1286         DOIT (x);
1287         bfd_put_32 (abfd, (bfd_vma) x, data);
1288       }
1289       break;
1290     case -2:
1291       {
1292         long x = bfd_get_32 (abfd, data);
1293         relocation = -relocation;
1294         DOIT (x);
1295         bfd_put_32 (abfd, (bfd_vma) x, data);
1296       }
1297       break;
1298
1299     case 3:
1300       /* Do nothing */
1301       break;
1302
1303     case 4:
1304       {
1305         bfd_vma x = bfd_get_64 (abfd, data);
1306         DOIT (x);
1307         bfd_put_64 (abfd, x, data);
1308       }
1309       break;
1310     default:
1311       return bfd_reloc_other;
1312     }
1313
1314   return flag;
1315 }
1316
1317 /* This relocation routine is used by some of the backend linkers.
1318    They do not construct asymbol or arelent structures, so there is no
1319    reason for them to use bfd_perform_relocation.  Also,
1320    bfd_perform_relocation is so hacked up it is easier to write a new
1321    function than to try to deal with it.
1322
1323    This routine does a final relocation.  Whether it is useful for a
1324    relocatable link depends upon how the object format defines
1325    relocations.
1326
1327    FIXME: This routine ignores any special_function in the HOWTO,
1328    since the existing special_function values have been written for
1329    bfd_perform_relocation.
1330
1331    HOWTO is the reloc howto information.
1332    INPUT_BFD is the BFD which the reloc applies to.
1333    INPUT_SECTION is the section which the reloc applies to.
1334    CONTENTS is the contents of the section.
1335    ADDRESS is the address of the reloc within INPUT_SECTION.
1336    VALUE is the value of the symbol the reloc refers to.
1337    ADDEND is the addend of the reloc.  */
1338
1339 bfd_reloc_status_type
1340 _bfd_final_link_relocate (reloc_howto_type *howto,
1341                           bfd *input_bfd,
1342                           asection *input_section,
1343                           bfd_byte *contents,
1344                           bfd_vma address,
1345                           bfd_vma value,
1346                           bfd_vma addend)
1347 {
1348   bfd_vma relocation;
1349
1350   /* Sanity check the address.  */
1351   if (address > bfd_get_section_limit (input_bfd, input_section))
1352     return bfd_reloc_outofrange;
1353
1354   /* This function assumes that we are dealing with a basic relocation
1355      against a symbol.  We want to compute the value of the symbol to
1356      relocate to.  This is just VALUE, the value of the symbol, plus
1357      ADDEND, any addend associated with the reloc.  */
1358   relocation = value + addend;
1359
1360   /* If the relocation is PC relative, we want to set RELOCATION to
1361      the distance between the symbol (currently in RELOCATION) and the
1362      location we are relocating.  Some targets (e.g., i386-aout)
1363      arrange for the contents of the section to be the negative of the
1364      offset of the location within the section; for such targets
1365      pcrel_offset is FALSE.  Other targets (e.g., m88kbcs or ELF)
1366      simply leave the contents of the section as zero; for such
1367      targets pcrel_offset is TRUE.  If pcrel_offset is FALSE we do not
1368      need to subtract out the offset of the location within the
1369      section (which is just ADDRESS).  */
1370   if (howto->pc_relative)
1371     {
1372       relocation -= (input_section->output_section->vma
1373                      + input_section->output_offset);
1374       if (howto->pcrel_offset)
1375         relocation -= address;
1376     }
1377
1378   return _bfd_relocate_contents (howto, input_bfd, relocation,
1379                                  contents + address);
1380 }
1381
1382 /* Relocate a given location using a given value and howto.  */
1383
1384 bfd_reloc_status_type
1385 _bfd_relocate_contents (reloc_howto_type *howto,
1386                         bfd *input_bfd,
1387                         bfd_vma relocation,
1388                         bfd_byte *location)
1389 {
1390   int size;
1391   bfd_vma x = 0;
1392   bfd_reloc_status_type flag;
1393   unsigned int rightshift = howto->rightshift;
1394   unsigned int bitpos = howto->bitpos;
1395
1396   /* If the size is negative, negate RELOCATION.  This isn't very
1397      general.  */
1398   if (howto->size < 0)
1399     relocation = -relocation;
1400
1401   /* Get the value we are going to relocate.  */
1402   size = bfd_get_reloc_size (howto);
1403   switch (size)
1404     {
1405     default:
1406     case 0:
1407       abort ();
1408     case 1:
1409       x = bfd_get_8 (input_bfd, location);
1410       break;
1411     case 2:
1412       x = bfd_get_16 (input_bfd, location);
1413       break;
1414     case 4:
1415       x = bfd_get_32 (input_bfd, location);
1416       break;
1417     case 8:
1418 #ifdef BFD64
1419       x = bfd_get_64 (input_bfd, location);
1420 #else
1421       abort ();
1422 #endif
1423       break;
1424     }
1425
1426   /* Check for overflow.  FIXME: We may drop bits during the addition
1427      which we don't check for.  We must either check at every single
1428      operation, which would be tedious, or we must do the computations
1429      in a type larger than bfd_vma, which would be inefficient.  */
1430   flag = bfd_reloc_ok;
1431   if (howto->complain_on_overflow != complain_overflow_dont)
1432     {
1433       bfd_vma addrmask, fieldmask, signmask, ss;
1434       bfd_vma a, b, sum;
1435
1436       /* Get the values to be added together.  For signed and unsigned
1437          relocations, we assume that all values should be truncated to
1438          the size of an address.  For bitfields, all the bits matter.
1439          See also bfd_check_overflow.  */
1440       fieldmask = N_ONES (howto->bitsize);
1441       addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask;
1442       a = relocation;
1443       b = x & howto->src_mask;
1444
1445       switch (howto->complain_on_overflow)
1446         {
1447         case complain_overflow_signed:
1448           a = (a & addrmask) >> rightshift;
1449
1450           /* If any sign bits are set, all sign bits must be set.
1451              That is, A must be a valid negative address after
1452              shifting.  */
1453           signmask = ~ (fieldmask >> 1);
1454           ss = a & signmask;
1455           if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
1456             flag = bfd_reloc_overflow;
1457
1458           /* We only need this next bit of code if the sign bit of B
1459              is below the sign bit of A.  This would only happen if
1460              SRC_MASK had fewer bits than BITSIZE.  Note that if
1461              SRC_MASK has more bits than BITSIZE, we can get into
1462              trouble; we would need to verify that B is in range, as
1463              we do for A above.  */
1464           signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1465
1466           /* Set all the bits above the sign bit.  */
1467           b = (b ^ signmask) - signmask;
1468
1469           b = (b & addrmask) >> bitpos;
1470
1471           /* Now we can do the addition.  */
1472           sum = a + b;
1473
1474           /* See if the result has the correct sign.  Bits above the
1475              sign bit are junk now; ignore them.  If the sum is
1476              positive, make sure we did not have all negative inputs;
1477              if the sum is negative, make sure we did not have all
1478              positive inputs.  The test below looks only at the sign
1479              bits, and it really just
1480                  SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
1481              */
1482           signmask = (fieldmask >> 1) + 1;
1483           if (((~ (a ^ b)) & (a ^ sum)) & signmask)
1484             flag = bfd_reloc_overflow;
1485
1486           break;
1487
1488         case complain_overflow_unsigned:
1489           /* Checking for an unsigned overflow is relatively easy:
1490              trim the addresses and add, and trim the result as well.
1491              Overflow is normally indicated when the result does not
1492              fit in the field.  However, we also need to consider the
1493              case when, e.g., fieldmask is 0x7fffffff or smaller, an
1494              input is 0x80000000, and bfd_vma is only 32 bits; then we
1495              will get sum == 0, but there is an overflow, since the
1496              inputs did not fit in the field.  Instead of doing a
1497              separate test, we can check for this by or-ing in the
1498              operands when testing for the sum overflowing its final
1499              field.  */
1500           a = (a & addrmask) >> rightshift;
1501           b = (b & addrmask) >> bitpos;
1502           sum = (a + b) & addrmask;
1503           if ((a | b | sum) & ~ fieldmask)
1504             flag = bfd_reloc_overflow;
1505
1506           break;
1507
1508         case complain_overflow_bitfield:
1509           /* Much like the signed check, but for a field one bit
1510              wider, and no trimming inputs with addrmask.  We allow a
1511              bitfield to represent numbers in the range -2**n to
1512              2**n-1, where n is the number of bits in the field.
1513              Note that when bfd_vma is 32 bits, a 32-bit reloc can't
1514              overflow, which is exactly what we want.  */
1515           a >>= rightshift;
1516
1517           signmask = ~ fieldmask;
1518           ss = a & signmask;
1519           if (ss != 0 && ss != (((bfd_vma) -1 >> rightshift) & signmask))
1520             flag = bfd_reloc_overflow;
1521
1522           signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1523           b = (b ^ signmask) - signmask;
1524
1525           b >>= bitpos;
1526
1527           sum = a + b;
1528
1529           /* We mask with addrmask here to explicitly allow an address
1530              wrap-around.  The Linux kernel relies on it, and it is
1531              the only way to write assembler code which can run when
1532              loaded at a location 0x80000000 away from the location at
1533              which it is linked.  */
1534           signmask = fieldmask + 1;
1535           if (((~ (a ^ b)) & (a ^ sum)) & signmask & addrmask)
1536             flag = bfd_reloc_overflow;
1537
1538           break;
1539
1540         default:
1541           abort ();
1542         }
1543     }
1544
1545   /* Put RELOCATION in the right bits.  */
1546   relocation >>= (bfd_vma) rightshift;
1547   relocation <<= (bfd_vma) bitpos;
1548
1549   /* Add RELOCATION to the right bits of X.  */
1550   x = ((x & ~howto->dst_mask)
1551        | (((x & howto->src_mask) + relocation) & howto->dst_mask));
1552
1553   /* Put the relocated value back in the object file.  */
1554   switch (size)
1555     {
1556     default:
1557     case 0:
1558       abort ();
1559     case 1:
1560       bfd_put_8 (input_bfd, x, location);
1561       break;
1562     case 2:
1563       bfd_put_16 (input_bfd, x, location);
1564       break;
1565     case 4:
1566       bfd_put_32 (input_bfd, x, location);
1567       break;
1568     case 8:
1569 #ifdef BFD64
1570       bfd_put_64 (input_bfd, x, location);
1571 #else
1572       abort ();
1573 #endif
1574       break;
1575     }
1576
1577   return flag;
1578 }
1579
1580 /*
1581 DOCDD
1582 INODE
1583         howto manager,  , typedef arelent, Relocations
1584
1585 SECTION
1586         The howto manager
1587
1588         When an application wants to create a relocation, but doesn't
1589         know what the target machine might call it, it can find out by
1590         using this bit of code.
1591
1592 */
1593
1594 /*
1595 TYPEDEF
1596         bfd_reloc_code_type
1597
1598 DESCRIPTION
1599         The insides of a reloc code.  The idea is that, eventually, there
1600         will be one enumerator for every type of relocation we ever do.
1601         Pass one of these values to <<bfd_reloc_type_lookup>>, and it'll
1602         return a howto pointer.
1603
1604         This does mean that the application must determine the correct
1605         enumerator value; you can't get a howto pointer from a random set
1606         of attributes.
1607
1608 SENUM
1609    bfd_reloc_code_real
1610
1611 ENUM
1612   BFD_RELOC_64
1613 ENUMX
1614   BFD_RELOC_32
1615 ENUMX
1616   BFD_RELOC_26
1617 ENUMX
1618   BFD_RELOC_24
1619 ENUMX
1620   BFD_RELOC_16
1621 ENUMX
1622   BFD_RELOC_14
1623 ENUMX
1624   BFD_RELOC_8
1625 ENUMDOC
1626   Basic absolute relocations of N bits.
1627
1628 ENUM
1629   BFD_RELOC_64_PCREL
1630 ENUMX
1631   BFD_RELOC_32_PCREL
1632 ENUMX
1633   BFD_RELOC_24_PCREL
1634 ENUMX
1635   BFD_RELOC_16_PCREL
1636 ENUMX
1637   BFD_RELOC_12_PCREL
1638 ENUMX
1639   BFD_RELOC_8_PCREL
1640 ENUMDOC
1641   PC-relative relocations.  Sometimes these are relative to the address
1642 of the relocation itself; sometimes they are relative to the start of
1643 the section containing the relocation.  It depends on the specific target.
1644
1645 The 24-bit relocation is used in some Intel 960 configurations.
1646
1647 ENUM
1648   BFD_RELOC_32_SECREL
1649 ENUMDOC
1650   Section relative relocations.  Some targets need this for DWARF2.
1651
1652 ENUM
1653   BFD_RELOC_32_GOT_PCREL
1654 ENUMX
1655   BFD_RELOC_16_GOT_PCREL
1656 ENUMX
1657   BFD_RELOC_8_GOT_PCREL
1658 ENUMX
1659   BFD_RELOC_32_GOTOFF
1660 ENUMX
1661   BFD_RELOC_16_GOTOFF
1662 ENUMX
1663   BFD_RELOC_LO16_GOTOFF
1664 ENUMX
1665   BFD_RELOC_HI16_GOTOFF
1666 ENUMX
1667   BFD_RELOC_HI16_S_GOTOFF
1668 ENUMX
1669   BFD_RELOC_8_GOTOFF
1670 ENUMX
1671   BFD_RELOC_64_PLT_PCREL
1672 ENUMX
1673   BFD_RELOC_32_PLT_PCREL
1674 ENUMX
1675   BFD_RELOC_24_PLT_PCREL
1676 ENUMX
1677   BFD_RELOC_16_PLT_PCREL
1678 ENUMX
1679   BFD_RELOC_8_PLT_PCREL
1680 ENUMX
1681   BFD_RELOC_64_PLTOFF
1682 ENUMX
1683   BFD_RELOC_32_PLTOFF
1684 ENUMX
1685   BFD_RELOC_16_PLTOFF
1686 ENUMX
1687   BFD_RELOC_LO16_PLTOFF
1688 ENUMX
1689   BFD_RELOC_HI16_PLTOFF
1690 ENUMX
1691   BFD_RELOC_HI16_S_PLTOFF
1692 ENUMX
1693   BFD_RELOC_8_PLTOFF
1694 ENUMDOC
1695   For ELF.
1696
1697 ENUM
1698   BFD_RELOC_68K_GLOB_DAT
1699 ENUMX
1700   BFD_RELOC_68K_JMP_SLOT
1701 ENUMX
1702   BFD_RELOC_68K_RELATIVE
1703 ENUMDOC
1704   Relocations used by 68K ELF.
1705
1706 ENUM
1707   BFD_RELOC_32_BASEREL
1708 ENUMX
1709   BFD_RELOC_16_BASEREL
1710 ENUMX
1711   BFD_RELOC_LO16_BASEREL
1712 ENUMX
1713   BFD_RELOC_HI16_BASEREL
1714 ENUMX
1715   BFD_RELOC_HI16_S_BASEREL
1716 ENUMX
1717   BFD_RELOC_8_BASEREL
1718 ENUMX
1719   BFD_RELOC_RVA
1720 ENUMDOC
1721   Linkage-table relative.
1722
1723 ENUM
1724   BFD_RELOC_8_FFnn
1725 ENUMDOC
1726   Absolute 8-bit relocation, but used to form an address like 0xFFnn.
1727
1728 ENUM
1729   BFD_RELOC_32_PCREL_S2
1730 ENUMX
1731   BFD_RELOC_16_PCREL_S2
1732 ENUMX
1733   BFD_RELOC_23_PCREL_S2
1734 ENUMDOC
1735   These PC-relative relocations are stored as word displacements --
1736 i.e., byte displacements shifted right two bits.  The 30-bit word
1737 displacement (<<32_PCREL_S2>> -- 32 bits, shifted 2) is used on the
1738 SPARC.  (SPARC tools generally refer to this as <<WDISP30>>.)  The
1739 signed 16-bit displacement is used on the MIPS, and the 23-bit
1740 displacement is used on the Alpha.
1741
1742 ENUM
1743   BFD_RELOC_HI22
1744 ENUMX
1745   BFD_RELOC_LO10
1746 ENUMDOC
1747   High 22 bits and low 10 bits of 32-bit value, placed into lower bits of
1748 the target word.  These are used on the SPARC.
1749
1750 ENUM
1751   BFD_RELOC_GPREL16
1752 ENUMX
1753   BFD_RELOC_GPREL32
1754 ENUMDOC
1755   For systems that allocate a Global Pointer register, these are
1756 displacements off that register.  These relocation types are
1757 handled specially, because the value the register will have is
1758 decided relatively late.
1759
1760 ENUM
1761   BFD_RELOC_I960_CALLJ
1762 ENUMDOC
1763   Reloc types used for i960/b.out.
1764
1765 ENUM
1766   BFD_RELOC_NONE
1767 ENUMX
1768   BFD_RELOC_SPARC_WDISP22
1769 ENUMX
1770   BFD_RELOC_SPARC22
1771 ENUMX
1772   BFD_RELOC_SPARC13
1773 ENUMX
1774   BFD_RELOC_SPARC_GOT10
1775 ENUMX
1776   BFD_RELOC_SPARC_GOT13
1777 ENUMX
1778   BFD_RELOC_SPARC_GOT22
1779 ENUMX
1780   BFD_RELOC_SPARC_PC10
1781 ENUMX
1782   BFD_RELOC_SPARC_PC22
1783 ENUMX
1784   BFD_RELOC_SPARC_WPLT30
1785 ENUMX
1786   BFD_RELOC_SPARC_COPY
1787 ENUMX
1788   BFD_RELOC_SPARC_GLOB_DAT
1789 ENUMX
1790   BFD_RELOC_SPARC_JMP_SLOT
1791 ENUMX
1792   BFD_RELOC_SPARC_RELATIVE
1793 ENUMX
1794   BFD_RELOC_SPARC_UA16
1795 ENUMX
1796   BFD_RELOC_SPARC_UA32
1797 ENUMX
1798   BFD_RELOC_SPARC_UA64
1799 ENUMDOC
1800   SPARC ELF relocations.  There is probably some overlap with other
1801   relocation types already defined.
1802
1803 ENUM
1804   BFD_RELOC_SPARC_BASE13
1805 ENUMX
1806   BFD_RELOC_SPARC_BASE22
1807 ENUMDOC
1808   I think these are specific to SPARC a.out (e.g., Sun 4).
1809
1810 ENUMEQ
1811   BFD_RELOC_SPARC_64
1812   BFD_RELOC_64
1813 ENUMX
1814   BFD_RELOC_SPARC_10
1815 ENUMX
1816   BFD_RELOC_SPARC_11
1817 ENUMX
1818   BFD_RELOC_SPARC_OLO10
1819 ENUMX
1820   BFD_RELOC_SPARC_HH22
1821 ENUMX
1822   BFD_RELOC_SPARC_HM10
1823 ENUMX
1824   BFD_RELOC_SPARC_LM22
1825 ENUMX
1826   BFD_RELOC_SPARC_PC_HH22
1827 ENUMX
1828   BFD_RELOC_SPARC_PC_HM10
1829 ENUMX
1830   BFD_RELOC_SPARC_PC_LM22
1831 ENUMX
1832   BFD_RELOC_SPARC_WDISP16
1833 ENUMX
1834   BFD_RELOC_SPARC_WDISP19
1835 ENUMX
1836   BFD_RELOC_SPARC_7
1837 ENUMX
1838   BFD_RELOC_SPARC_6
1839 ENUMX
1840   BFD_RELOC_SPARC_5
1841 ENUMEQX
1842   BFD_RELOC_SPARC_DISP64
1843   BFD_RELOC_64_PCREL
1844 ENUMX
1845   BFD_RELOC_SPARC_PLT32
1846 ENUMX
1847   BFD_RELOC_SPARC_PLT64
1848 ENUMX
1849   BFD_RELOC_SPARC_HIX22
1850 ENUMX
1851   BFD_RELOC_SPARC_LOX10
1852 ENUMX
1853   BFD_RELOC_SPARC_H44
1854 ENUMX
1855   BFD_RELOC_SPARC_M44
1856 ENUMX
1857   BFD_RELOC_SPARC_L44
1858 ENUMX
1859   BFD_RELOC_SPARC_REGISTER
1860 ENUMDOC
1861   SPARC64 relocations
1862
1863 ENUM
1864   BFD_RELOC_SPARC_REV32
1865 ENUMDOC
1866   SPARC little endian relocation
1867 ENUM
1868   BFD_RELOC_SPARC_TLS_GD_HI22
1869 ENUMX
1870   BFD_RELOC_SPARC_TLS_GD_LO10
1871 ENUMX
1872   BFD_RELOC_SPARC_TLS_GD_ADD
1873 ENUMX
1874   BFD_RELOC_SPARC_TLS_GD_CALL
1875 ENUMX
1876   BFD_RELOC_SPARC_TLS_LDM_HI22
1877 ENUMX
1878   BFD_RELOC_SPARC_TLS_LDM_LO10
1879 ENUMX
1880   BFD_RELOC_SPARC_TLS_LDM_ADD
1881 ENUMX
1882   BFD_RELOC_SPARC_TLS_LDM_CALL
1883 ENUMX
1884   BFD_RELOC_SPARC_TLS_LDO_HIX22
1885 ENUMX
1886   BFD_RELOC_SPARC_TLS_LDO_LOX10
1887 ENUMX
1888   BFD_RELOC_SPARC_TLS_LDO_ADD
1889 ENUMX
1890   BFD_RELOC_SPARC_TLS_IE_HI22
1891 ENUMX
1892   BFD_RELOC_SPARC_TLS_IE_LO10
1893 ENUMX
1894   BFD_RELOC_SPARC_TLS_IE_LD
1895 ENUMX
1896   BFD_RELOC_SPARC_TLS_IE_LDX
1897 ENUMX
1898   BFD_RELOC_SPARC_TLS_IE_ADD
1899 ENUMX
1900   BFD_RELOC_SPARC_TLS_LE_HIX22
1901 ENUMX
1902   BFD_RELOC_SPARC_TLS_LE_LOX10
1903 ENUMX
1904   BFD_RELOC_SPARC_TLS_DTPMOD32
1905 ENUMX
1906   BFD_RELOC_SPARC_TLS_DTPMOD64
1907 ENUMX
1908   BFD_RELOC_SPARC_TLS_DTPOFF32
1909 ENUMX
1910   BFD_RELOC_SPARC_TLS_DTPOFF64
1911 ENUMX
1912   BFD_RELOC_SPARC_TLS_TPOFF32
1913 ENUMX
1914   BFD_RELOC_SPARC_TLS_TPOFF64
1915 ENUMDOC
1916   SPARC TLS relocations
1917
1918 ENUM
1919   BFD_RELOC_ALPHA_GPDISP_HI16
1920 ENUMDOC
1921   Alpha ECOFF and ELF relocations.  Some of these treat the symbol or
1922      "addend" in some special way.
1923   For GPDISP_HI16 ("gpdisp") relocations, the symbol is ignored when
1924      writing; when reading, it will be the absolute section symbol.  The
1925      addend is the displacement in bytes of the "lda" instruction from
1926      the "ldah" instruction (which is at the address of this reloc).
1927 ENUM
1928   BFD_RELOC_ALPHA_GPDISP_LO16
1929 ENUMDOC
1930   For GPDISP_LO16 ("ignore") relocations, the symbol is handled as
1931      with GPDISP_HI16 relocs.  The addend is ignored when writing the
1932      relocations out, and is filled in with the file's GP value on
1933      reading, for convenience.
1934
1935 ENUM
1936   BFD_RELOC_ALPHA_GPDISP
1937 ENUMDOC
1938   The ELF GPDISP relocation is exactly the same as the GPDISP_HI16
1939      relocation except that there is no accompanying GPDISP_LO16
1940      relocation.
1941
1942 ENUM
1943   BFD_RELOC_ALPHA_LITERAL
1944 ENUMX
1945   BFD_RELOC_ALPHA_ELF_LITERAL
1946 ENUMX
1947   BFD_RELOC_ALPHA_LITUSE
1948 ENUMDOC
1949   The Alpha LITERAL/LITUSE relocs are produced by a symbol reference;
1950      the assembler turns it into a LDQ instruction to load the address of
1951      the symbol, and then fills in a register in the real instruction.
1952
1953      The LITERAL reloc, at the LDQ instruction, refers to the .lita
1954      section symbol.  The addend is ignored when writing, but is filled
1955      in with the file's GP value on reading, for convenience, as with the
1956      GPDISP_LO16 reloc.
1957
1958      The ELF_LITERAL reloc is somewhere between 16_GOTOFF and GPDISP_LO16.
1959      It should refer to the symbol to be referenced, as with 16_GOTOFF,
1960      but it generates output not based on the position within the .got
1961      section, but relative to the GP value chosen for the file during the
1962      final link stage.
1963
1964      The LITUSE reloc, on the instruction using the loaded address, gives
1965      information to the linker that it might be able to use to optimize
1966      away some literal section references.  The symbol is ignored (read
1967      as the absolute section symbol), and the "addend" indicates the type
1968      of instruction using the register:
1969               1 - "memory" fmt insn
1970               2 - byte-manipulation (byte offset reg)
1971               3 - jsr (target of branch)
1972
1973 ENUM
1974   BFD_RELOC_ALPHA_HINT
1975 ENUMDOC
1976   The HINT relocation indicates a value that should be filled into the
1977      "hint" field of a jmp/jsr/ret instruction, for possible branch-
1978      prediction logic which may be provided on some processors.
1979
1980 ENUM
1981   BFD_RELOC_ALPHA_LINKAGE
1982 ENUMDOC
1983   The LINKAGE relocation outputs a linkage pair in the object file,
1984      which is filled by the linker.
1985
1986 ENUM
1987   BFD_RELOC_ALPHA_CODEADDR
1988 ENUMDOC
1989   The CODEADDR relocation outputs a STO_CA in the object file,
1990      which is filled by the linker.
1991
1992 ENUM
1993   BFD_RELOC_ALPHA_GPREL_HI16
1994 ENUMX
1995   BFD_RELOC_ALPHA_GPREL_LO16
1996 ENUMDOC
1997   The GPREL_HI/LO relocations together form a 32-bit offset from the
1998      GP register.
1999
2000 ENUM
2001   BFD_RELOC_ALPHA_BRSGP
2002 ENUMDOC
2003   Like BFD_RELOC_23_PCREL_S2, except that the source and target must
2004   share a common GP, and the target address is adjusted for
2005   STO_ALPHA_STD_GPLOAD.
2006
2007 ENUM
2008   BFD_RELOC_ALPHA_TLSGD
2009 ENUMX
2010   BFD_RELOC_ALPHA_TLSLDM
2011 ENUMX
2012   BFD_RELOC_ALPHA_DTPMOD64
2013 ENUMX
2014   BFD_RELOC_ALPHA_GOTDTPREL16
2015 ENUMX
2016   BFD_RELOC_ALPHA_DTPREL64
2017 ENUMX
2018   BFD_RELOC_ALPHA_DTPREL_HI16
2019 ENUMX
2020   BFD_RELOC_ALPHA_DTPREL_LO16
2021 ENUMX
2022   BFD_RELOC_ALPHA_DTPREL16
2023 ENUMX
2024   BFD_RELOC_ALPHA_GOTTPREL16
2025 ENUMX
2026   BFD_RELOC_ALPHA_TPREL64
2027 ENUMX
2028   BFD_RELOC_ALPHA_TPREL_HI16
2029 ENUMX
2030   BFD_RELOC_ALPHA_TPREL_LO16
2031 ENUMX
2032   BFD_RELOC_ALPHA_TPREL16
2033 ENUMDOC
2034   Alpha thread-local storage relocations.
2035
2036 ENUM
2037   BFD_RELOC_MIPS_JMP
2038 ENUMDOC
2039   Bits 27..2 of the relocation address shifted right 2 bits;
2040      simple reloc otherwise.
2041
2042 ENUM
2043   BFD_RELOC_MIPS16_JMP
2044 ENUMDOC
2045   The MIPS16 jump instruction.
2046
2047 ENUM
2048   BFD_RELOC_MIPS16_GPREL
2049 ENUMDOC
2050   MIPS16 GP relative reloc.
2051
2052 ENUM
2053   BFD_RELOC_HI16
2054 ENUMDOC
2055   High 16 bits of 32-bit value; simple reloc.
2056 ENUM
2057   BFD_RELOC_HI16_S
2058 ENUMDOC
2059   High 16 bits of 32-bit value but the low 16 bits will be sign
2060      extended and added to form the final result.  If the low 16
2061      bits form a negative number, we need to add one to the high value
2062      to compensate for the borrow when the low bits are added.
2063 ENUM
2064   BFD_RELOC_LO16
2065 ENUMDOC
2066   Low 16 bits.
2067
2068 ENUM
2069   BFD_RELOC_MIPS_LITERAL
2070 ENUMDOC
2071   Relocation against a MIPS literal section.
2072
2073 ENUM
2074   BFD_RELOC_MIPS_GOT16
2075 ENUMX
2076   BFD_RELOC_MIPS_CALL16
2077 ENUMX
2078   BFD_RELOC_MIPS_GOT_HI16
2079 ENUMX
2080   BFD_RELOC_MIPS_GOT_LO16
2081 ENUMX
2082   BFD_RELOC_MIPS_CALL_HI16
2083 ENUMX
2084   BFD_RELOC_MIPS_CALL_LO16
2085 ENUMX
2086   BFD_RELOC_MIPS_SUB
2087 ENUMX
2088   BFD_RELOC_MIPS_GOT_PAGE
2089 ENUMX
2090   BFD_RELOC_MIPS_GOT_OFST
2091 ENUMX
2092   BFD_RELOC_MIPS_GOT_DISP
2093 ENUMX
2094   BFD_RELOC_MIPS_SHIFT5
2095 ENUMX
2096   BFD_RELOC_MIPS_SHIFT6
2097 ENUMX
2098   BFD_RELOC_MIPS_INSERT_A
2099 ENUMX
2100   BFD_RELOC_MIPS_INSERT_B
2101 ENUMX
2102   BFD_RELOC_MIPS_DELETE
2103 ENUMX
2104   BFD_RELOC_MIPS_HIGHEST
2105 ENUMX
2106   BFD_RELOC_MIPS_HIGHER
2107 ENUMX
2108   BFD_RELOC_MIPS_SCN_DISP
2109 ENUMX
2110   BFD_RELOC_MIPS_REL16
2111 ENUMX
2112   BFD_RELOC_MIPS_RELGOT
2113 ENUMX
2114   BFD_RELOC_MIPS_JALR
2115 ENUMDOC
2116   MIPS ELF relocations.
2117 COMMENT
2118
2119 ENUM
2120   BFD_RELOC_FRV_LABEL16
2121 ENUMX
2122   BFD_RELOC_FRV_LABEL24
2123 ENUMX
2124   BFD_RELOC_FRV_LO16
2125 ENUMX
2126   BFD_RELOC_FRV_HI16
2127 ENUMX
2128   BFD_RELOC_FRV_GPREL12
2129 ENUMX
2130   BFD_RELOC_FRV_GPRELU12
2131 ENUMX
2132   BFD_RELOC_FRV_GPREL32
2133 ENUMX
2134   BFD_RELOC_FRV_GPRELHI
2135 ENUMX
2136   BFD_RELOC_FRV_GPRELLO
2137 ENUMX
2138   BFD_RELOC_FRV_GOT12
2139 ENUMX
2140   BFD_RELOC_FRV_GOTHI
2141 ENUMX
2142   BFD_RELOC_FRV_GOTLO
2143 ENUMX
2144   BFD_RELOC_FRV_FUNCDESC
2145 ENUMX
2146   BFD_RELOC_FRV_FUNCDESC_GOT12
2147 ENUMX
2148   BFD_RELOC_FRV_FUNCDESC_GOTHI
2149 ENUMX
2150   BFD_RELOC_FRV_FUNCDESC_GOTLO
2151 ENUMX
2152   BFD_RELOC_FRV_FUNCDESC_VALUE
2153 ENUMX
2154   BFD_RELOC_FRV_FUNCDESC_GOTOFF12
2155 ENUMX
2156   BFD_RELOC_FRV_FUNCDESC_GOTOFFHI
2157 ENUMX
2158   BFD_RELOC_FRV_FUNCDESC_GOTOFFLO
2159 ENUMX
2160   BFD_RELOC_FRV_GOTOFF12
2161 ENUMX
2162   BFD_RELOC_FRV_GOTOFFHI
2163 ENUMX
2164   BFD_RELOC_FRV_GOTOFFLO
2165 ENUMDOC
2166   Fujitsu Frv Relocations.
2167 COMMENT
2168
2169 ENUM
2170   BFD_RELOC_MN10300_GOTOFF24
2171 ENUMDOC
2172   This is a 24bit GOT-relative reloc for the mn10300.
2173 ENUM
2174   BFD_RELOC_MN10300_GOT32
2175 ENUMDOC
2176   This is a 32bit GOT-relative reloc for the mn10300, offset by two bytes
2177   in the instruction.
2178 ENUM
2179   BFD_RELOC_MN10300_GOT24
2180 ENUMDOC
2181   This is a 24bit GOT-relative reloc for the mn10300, offset by two bytes
2182   in the instruction.
2183 ENUM
2184   BFD_RELOC_MN10300_GOT16
2185 ENUMDOC
2186   This is a 16bit GOT-relative reloc for the mn10300, offset by two bytes
2187   in the instruction.
2188 ENUM
2189   BFD_RELOC_MN10300_COPY
2190 ENUMDOC
2191   Copy symbol at runtime.
2192 ENUM
2193   BFD_RELOC_MN10300_GLOB_DAT
2194 ENUMDOC
2195   Create GOT entry.
2196 ENUM
2197   BFD_RELOC_MN10300_JMP_SLOT
2198 ENUMDOC
2199   Create PLT entry.
2200 ENUM
2201   BFD_RELOC_MN10300_RELATIVE
2202 ENUMDOC
2203   Adjust by program base.
2204 COMMENT
2205
2206 ENUM
2207   BFD_RELOC_386_GOT32
2208 ENUMX
2209   BFD_RELOC_386_PLT32
2210 ENUMX
2211   BFD_RELOC_386_COPY
2212 ENUMX
2213   BFD_RELOC_386_GLOB_DAT
2214 ENUMX
2215   BFD_RELOC_386_JUMP_SLOT
2216 ENUMX
2217   BFD_RELOC_386_RELATIVE
2218 ENUMX
2219   BFD_RELOC_386_GOTOFF
2220 ENUMX
2221   BFD_RELOC_386_GOTPC
2222 ENUMX
2223   BFD_RELOC_386_TLS_TPOFF
2224 ENUMX
2225   BFD_RELOC_386_TLS_IE
2226 ENUMX
2227   BFD_RELOC_386_TLS_GOTIE
2228 ENUMX
2229   BFD_RELOC_386_TLS_LE
2230 ENUMX
2231   BFD_RELOC_386_TLS_GD
2232 ENUMX
2233   BFD_RELOC_386_TLS_LDM
2234 ENUMX
2235   BFD_RELOC_386_TLS_LDO_32
2236 ENUMX
2237   BFD_RELOC_386_TLS_IE_32
2238 ENUMX
2239   BFD_RELOC_386_TLS_LE_32
2240 ENUMX
2241   BFD_RELOC_386_TLS_DTPMOD32
2242 ENUMX
2243   BFD_RELOC_386_TLS_DTPOFF32
2244 ENUMX
2245   BFD_RELOC_386_TLS_TPOFF32
2246 ENUMDOC
2247   i386/elf relocations
2248
2249 ENUM
2250   BFD_RELOC_X86_64_GOT32
2251 ENUMX
2252   BFD_RELOC_X86_64_PLT32
2253 ENUMX
2254   BFD_RELOC_X86_64_COPY
2255 ENUMX
2256   BFD_RELOC_X86_64_GLOB_DAT
2257 ENUMX
2258   BFD_RELOC_X86_64_JUMP_SLOT
2259 ENUMX
2260   BFD_RELOC_X86_64_RELATIVE
2261 ENUMX
2262   BFD_RELOC_X86_64_GOTPCREL
2263 ENUMX
2264   BFD_RELOC_X86_64_32S
2265 ENUMX
2266   BFD_RELOC_X86_64_DTPMOD64
2267 ENUMX
2268   BFD_RELOC_X86_64_DTPOFF64
2269 ENUMX
2270   BFD_RELOC_X86_64_TPOFF64
2271 ENUMX
2272   BFD_RELOC_X86_64_TLSGD
2273 ENUMX
2274   BFD_RELOC_X86_64_TLSLD
2275 ENUMX
2276   BFD_RELOC_X86_64_DTPOFF32
2277 ENUMX
2278   BFD_RELOC_X86_64_GOTTPOFF
2279 ENUMX
2280   BFD_RELOC_X86_64_TPOFF32
2281 ENUMDOC
2282   x86-64/elf relocations
2283
2284 ENUM
2285   BFD_RELOC_NS32K_IMM_8
2286 ENUMX
2287   BFD_RELOC_NS32K_IMM_16
2288 ENUMX
2289   BFD_RELOC_NS32K_IMM_32
2290 ENUMX
2291   BFD_RELOC_NS32K_IMM_8_PCREL
2292 ENUMX
2293   BFD_RELOC_NS32K_IMM_16_PCREL
2294 ENUMX
2295   BFD_RELOC_NS32K_IMM_32_PCREL
2296 ENUMX
2297   BFD_RELOC_NS32K_DISP_8
2298 ENUMX
2299   BFD_RELOC_NS32K_DISP_16
2300 ENUMX
2301   BFD_RELOC_NS32K_DISP_32
2302 ENUMX
2303   BFD_RELOC_NS32K_DISP_8_PCREL
2304 ENUMX
2305   BFD_RELOC_NS32K_DISP_16_PCREL
2306 ENUMX
2307   BFD_RELOC_NS32K_DISP_32_PCREL
2308 ENUMDOC
2309   ns32k relocations
2310
2311 ENUM
2312   BFD_RELOC_PDP11_DISP_8_PCREL
2313 ENUMX
2314   BFD_RELOC_PDP11_DISP_6_PCREL
2315 ENUMDOC
2316   PDP11 relocations
2317
2318 ENUM
2319   BFD_RELOC_PJ_CODE_HI16
2320 ENUMX
2321   BFD_RELOC_PJ_CODE_LO16
2322 ENUMX
2323   BFD_RELOC_PJ_CODE_DIR16
2324 ENUMX
2325   BFD_RELOC_PJ_CODE_DIR32
2326 ENUMX
2327   BFD_RELOC_PJ_CODE_REL16
2328 ENUMX
2329   BFD_RELOC_PJ_CODE_REL32
2330 ENUMDOC
2331   Picojava relocs.  Not all of these appear in object files.
2332
2333 ENUM
2334   BFD_RELOC_PPC_B26
2335 ENUMX
2336   BFD_RELOC_PPC_BA26
2337 ENUMX
2338   BFD_RELOC_PPC_TOC16
2339 ENUMX
2340   BFD_RELOC_PPC_B16
2341 ENUMX
2342   BFD_RELOC_PPC_B16_BRTAKEN
2343 ENUMX
2344   BFD_RELOC_PPC_B16_BRNTAKEN
2345 ENUMX
2346   BFD_RELOC_PPC_BA16
2347 ENUMX
2348   BFD_RELOC_PPC_BA16_BRTAKEN
2349 ENUMX
2350   BFD_RELOC_PPC_BA16_BRNTAKEN
2351 ENUMX
2352   BFD_RELOC_PPC_COPY
2353 ENUMX
2354   BFD_RELOC_PPC_GLOB_DAT
2355 ENUMX
2356   BFD_RELOC_PPC_JMP_SLOT
2357 ENUMX
2358   BFD_RELOC_PPC_RELATIVE
2359 ENUMX
2360   BFD_RELOC_PPC_LOCAL24PC
2361 ENUMX
2362   BFD_RELOC_PPC_EMB_NADDR32
2363 ENUMX
2364   BFD_RELOC_PPC_EMB_NADDR16
2365 ENUMX
2366   BFD_RELOC_PPC_EMB_NADDR16_LO
2367 ENUMX
2368   BFD_RELOC_PPC_EMB_NADDR16_HI
2369 ENUMX
2370   BFD_RELOC_PPC_EMB_NADDR16_HA
2371 ENUMX
2372   BFD_RELOC_PPC_EMB_SDAI16
2373 ENUMX
2374   BFD_RELOC_PPC_EMB_SDA2I16
2375 ENUMX
2376   BFD_RELOC_PPC_EMB_SDA2REL
2377 ENUMX
2378   BFD_RELOC_PPC_EMB_SDA21
2379 ENUMX
2380   BFD_RELOC_PPC_EMB_MRKREF
2381 ENUMX
2382   BFD_RELOC_PPC_EMB_RELSEC16
2383 ENUMX
2384   BFD_RELOC_PPC_EMB_RELST_LO
2385 ENUMX
2386   BFD_RELOC_PPC_EMB_RELST_HI
2387 ENUMX
2388   BFD_RELOC_PPC_EMB_RELST_HA
2389 ENUMX
2390   BFD_RELOC_PPC_EMB_BIT_FLD
2391 ENUMX
2392   BFD_RELOC_PPC_EMB_RELSDA
2393 ENUMX
2394   BFD_RELOC_PPC64_HIGHER
2395 ENUMX
2396   BFD_RELOC_PPC64_HIGHER_S
2397 ENUMX
2398   BFD_RELOC_PPC64_HIGHEST
2399 ENUMX
2400   BFD_RELOC_PPC64_HIGHEST_S
2401 ENUMX
2402   BFD_RELOC_PPC64_TOC16_LO
2403 ENUMX
2404   BFD_RELOC_PPC64_TOC16_HI
2405 ENUMX
2406   BFD_RELOC_PPC64_TOC16_HA
2407 ENUMX
2408   BFD_RELOC_PPC64_TOC
2409 ENUMX
2410   BFD_RELOC_PPC64_PLTGOT16
2411 ENUMX
2412   BFD_RELOC_PPC64_PLTGOT16_LO
2413 ENUMX
2414   BFD_RELOC_PPC64_PLTGOT16_HI
2415 ENUMX
2416   BFD_RELOC_PPC64_PLTGOT16_HA
2417 ENUMX
2418   BFD_RELOC_PPC64_ADDR16_DS
2419 ENUMX
2420   BFD_RELOC_PPC64_ADDR16_LO_DS
2421 ENUMX
2422   BFD_RELOC_PPC64_GOT16_DS
2423 ENUMX
2424   BFD_RELOC_PPC64_GOT16_LO_DS
2425 ENUMX
2426   BFD_RELOC_PPC64_PLT16_LO_DS
2427 ENUMX
2428   BFD_RELOC_PPC64_SECTOFF_DS
2429 ENUMX
2430   BFD_RELOC_PPC64_SECTOFF_LO_DS
2431 ENUMX
2432   BFD_RELOC_PPC64_TOC16_DS
2433 ENUMX
2434   BFD_RELOC_PPC64_TOC16_LO_DS
2435 ENUMX
2436   BFD_RELOC_PPC64_PLTGOT16_DS
2437 ENUMX
2438   BFD_RELOC_PPC64_PLTGOT16_LO_DS
2439 ENUMDOC
2440   Power(rs6000) and PowerPC relocations.
2441
2442 ENUM
2443   BFD_RELOC_PPC_TLS
2444 ENUMX
2445   BFD_RELOC_PPC_DTPMOD
2446 ENUMX
2447   BFD_RELOC_PPC_TPREL16
2448 ENUMX
2449   BFD_RELOC_PPC_TPREL16_LO
2450 ENUMX
2451   BFD_RELOC_PPC_TPREL16_HI
2452 ENUMX
2453   BFD_RELOC_PPC_TPREL16_HA
2454 ENUMX
2455   BFD_RELOC_PPC_TPREL
2456 ENUMX
2457   BFD_RELOC_PPC_DTPREL16
2458 ENUMX
2459   BFD_RELOC_PPC_DTPREL16_LO
2460 ENUMX
2461   BFD_RELOC_PPC_DTPREL16_HI
2462 ENUMX
2463   BFD_RELOC_PPC_DTPREL16_HA
2464 ENUMX
2465   BFD_RELOC_PPC_DTPREL
2466 ENUMX
2467   BFD_RELOC_PPC_GOT_TLSGD16
2468 ENUMX
2469   BFD_RELOC_PPC_GOT_TLSGD16_LO
2470 ENUMX
2471   BFD_RELOC_PPC_GOT_TLSGD16_HI
2472 ENUMX
2473   BFD_RELOC_PPC_GOT_TLSGD16_HA
2474 ENUMX
2475   BFD_RELOC_PPC_GOT_TLSLD16
2476 ENUMX
2477   BFD_RELOC_PPC_GOT_TLSLD16_LO
2478 ENUMX
2479   BFD_RELOC_PPC_GOT_TLSLD16_HI
2480 ENUMX
2481   BFD_RELOC_PPC_GOT_TLSLD16_HA
2482 ENUMX
2483   BFD_RELOC_PPC_GOT_TPREL16
2484 ENUMX
2485   BFD_RELOC_PPC_GOT_TPREL16_LO
2486 ENUMX
2487   BFD_RELOC_PPC_GOT_TPREL16_HI
2488 ENUMX
2489   BFD_RELOC_PPC_GOT_TPREL16_HA
2490 ENUMX
2491   BFD_RELOC_PPC_GOT_DTPREL16
2492 ENUMX
2493   BFD_RELOC_PPC_GOT_DTPREL16_LO
2494 ENUMX
2495   BFD_RELOC_PPC_GOT_DTPREL16_HI
2496 ENUMX
2497   BFD_RELOC_PPC_GOT_DTPREL16_HA
2498 ENUMX
2499   BFD_RELOC_PPC64_TPREL16_DS
2500 ENUMX
2501   BFD_RELOC_PPC64_TPREL16_LO_DS
2502 ENUMX
2503   BFD_RELOC_PPC64_TPREL16_HIGHER
2504 ENUMX
2505   BFD_RELOC_PPC64_TPREL16_HIGHERA
2506 ENUMX
2507   BFD_RELOC_PPC64_TPREL16_HIGHEST
2508 ENUMX
2509   BFD_RELOC_PPC64_TPREL16_HIGHESTA
2510 ENUMX
2511   BFD_RELOC_PPC64_DTPREL16_DS
2512 ENUMX
2513   BFD_RELOC_PPC64_DTPREL16_LO_DS
2514 ENUMX
2515   BFD_RELOC_PPC64_DTPREL16_HIGHER
2516 ENUMX
2517   BFD_RELOC_PPC64_DTPREL16_HIGHERA
2518 ENUMX
2519   BFD_RELOC_PPC64_DTPREL16_HIGHEST
2520 ENUMX
2521   BFD_RELOC_PPC64_DTPREL16_HIGHESTA
2522 ENUMDOC
2523   PowerPC and PowerPC64 thread-local storage relocations.
2524
2525 ENUM
2526   BFD_RELOC_I370_D12
2527 ENUMDOC
2528   IBM 370/390 relocations
2529
2530 ENUM
2531   BFD_RELOC_CTOR
2532 ENUMDOC
2533   The type of reloc used to build a constructor table - at the moment
2534   probably a 32 bit wide absolute relocation, but the target can choose.
2535   It generally does map to one of the other relocation types.
2536
2537 ENUM
2538   BFD_RELOC_ARM_PCREL_BRANCH
2539 ENUMDOC
2540   ARM 26 bit pc-relative branch.  The lowest two bits must be zero and are
2541   not stored in the instruction.
2542 ENUM
2543   BFD_RELOC_ARM_PCREL_BLX
2544 ENUMDOC
2545   ARM 26 bit pc-relative branch.  The lowest bit must be zero and is
2546   not stored in the instruction.  The 2nd lowest bit comes from a 1 bit
2547   field in the instruction.
2548 ENUM
2549   BFD_RELOC_THUMB_PCREL_BLX
2550 ENUMDOC
2551   Thumb 22 bit pc-relative branch.  The lowest bit must be zero and is
2552   not stored in the instruction.  The 2nd lowest bit comes from a 1 bit
2553   field in the instruction.
2554 ENUM
2555   BFD_RELOC_ARM_IMMEDIATE
2556 ENUMX
2557   BFD_RELOC_ARM_ADRL_IMMEDIATE
2558 ENUMX
2559   BFD_RELOC_ARM_OFFSET_IMM
2560 ENUMX
2561   BFD_RELOC_ARM_SHIFT_IMM
2562 ENUMX
2563   BFD_RELOC_ARM_SMI
2564 ENUMX
2565   BFD_RELOC_ARM_SWI
2566 ENUMX
2567   BFD_RELOC_ARM_MULTI
2568 ENUMX
2569   BFD_RELOC_ARM_CP_OFF_IMM
2570 ENUMX
2571   BFD_RELOC_ARM_CP_OFF_IMM_S2
2572 ENUMX
2573   BFD_RELOC_ARM_ADR_IMM
2574 ENUMX
2575   BFD_RELOC_ARM_LDR_IMM
2576 ENUMX
2577   BFD_RELOC_ARM_LITERAL
2578 ENUMX
2579   BFD_RELOC_ARM_IN_POOL
2580 ENUMX
2581   BFD_RELOC_ARM_OFFSET_IMM8
2582 ENUMX
2583   BFD_RELOC_ARM_HWLITERAL
2584 ENUMX
2585   BFD_RELOC_ARM_THUMB_ADD
2586 ENUMX
2587   BFD_RELOC_ARM_THUMB_IMM
2588 ENUMX
2589   BFD_RELOC_ARM_THUMB_SHIFT
2590 ENUMX
2591   BFD_RELOC_ARM_THUMB_OFFSET
2592 ENUMX
2593   BFD_RELOC_ARM_GOT12
2594 ENUMX
2595   BFD_RELOC_ARM_GOT32
2596 ENUMX
2597   BFD_RELOC_ARM_JUMP_SLOT
2598 ENUMX
2599   BFD_RELOC_ARM_COPY
2600 ENUMX
2601   BFD_RELOC_ARM_GLOB_DAT
2602 ENUMX
2603   BFD_RELOC_ARM_PLT32
2604 ENUMX
2605   BFD_RELOC_ARM_RELATIVE
2606 ENUMX
2607   BFD_RELOC_ARM_GOTOFF
2608 ENUMX
2609   BFD_RELOC_ARM_GOTPC
2610 ENUMDOC
2611   These relocs are only used within the ARM assembler.  They are not
2612   (at present) written to any object files.
2613 ENUM
2614   BFD_RELOC_ARM_TARGET1
2615 ENUMDOC
2616   Pc-relative or absolute relocation depending on target.  Used for
2617   entries in .init_array sections.
2618 ENUM
2619   BFD_RELOC_ARM_ROSEGREL32
2620 ENUMDOC
2621   Read-only segment base relative address.
2622 ENUM
2623   BFD_RELOC_ARM_SBREL32
2624 ENUMDOC
2625   Data segment base relative address.
2626 ENUM
2627   BFD_RELOC_ARM_TARGET2
2628 ENUMDOC
2629   This reloc is used for References to RTTI dta from exception handling
2630   tables.  The actual definition depends on the target.  It may be a
2631   pc-relative or some form of GOT-indirect relocation.
2632 ENUM
2633   BFD_RELOC_ARM_PREL31
2634 ENUMDOC
2635   31-bit PC relative address.
2636
2637 ENUM
2638   BFD_RELOC_SH_PCDISP8BY2
2639 ENUMX
2640   BFD_RELOC_SH_PCDISP12BY2
2641 ENUMX
2642   BFD_RELOC_SH_IMM3
2643 ENUMX
2644   BFD_RELOC_SH_IMM3U
2645 ENUMX
2646   BFD_RELOC_SH_DISP12
2647 ENUMX
2648   BFD_RELOC_SH_DISP12BY2
2649 ENUMX
2650   BFD_RELOC_SH_DISP12BY4
2651 ENUMX
2652   BFD_RELOC_SH_DISP12BY8
2653 ENUMX
2654   BFD_RELOC_SH_DISP20
2655 ENUMX
2656   BFD_RELOC_SH_DISP20BY8
2657 ENUMX
2658   BFD_RELOC_SH_IMM4
2659 ENUMX
2660   BFD_RELOC_SH_IMM4BY2
2661 ENUMX
2662   BFD_RELOC_SH_IMM4BY4
2663 ENUMX
2664   BFD_RELOC_SH_IMM8
2665 ENUMX
2666   BFD_RELOC_SH_IMM8BY2
2667 ENUMX
2668   BFD_RELOC_SH_IMM8BY4
2669 ENUMX
2670   BFD_RELOC_SH_PCRELIMM8BY2
2671 ENUMX
2672   BFD_RELOC_SH_PCRELIMM8BY4
2673 ENUMX
2674   BFD_RELOC_SH_SWITCH16
2675 ENUMX
2676   BFD_RELOC_SH_SWITCH32
2677 ENUMX
2678   BFD_RELOC_SH_USES
2679 ENUMX
2680   BFD_RELOC_SH_COUNT
2681 ENUMX
2682   BFD_RELOC_SH_ALIGN
2683 ENUMX
2684   BFD_RELOC_SH_CODE
2685 ENUMX
2686   BFD_RELOC_SH_DATA
2687 ENUMX
2688   BFD_RELOC_SH_LABEL
2689 ENUMX
2690   BFD_RELOC_SH_LOOP_START
2691 ENUMX
2692   BFD_RELOC_SH_LOOP_END
2693 ENUMX
2694   BFD_RELOC_SH_COPY
2695 ENUMX
2696   BFD_RELOC_SH_GLOB_DAT
2697 ENUMX
2698   BFD_RELOC_SH_JMP_SLOT
2699 ENUMX
2700   BFD_RELOC_SH_RELATIVE
2701 ENUMX
2702   BFD_RELOC_SH_GOTPC
2703 ENUMX
2704   BFD_RELOC_SH_GOT_LOW16
2705 ENUMX
2706   BFD_RELOC_SH_GOT_MEDLOW16
2707 ENUMX
2708   BFD_RELOC_SH_GOT_MEDHI16
2709 ENUMX
2710   BFD_RELOC_SH_GOT_HI16
2711 ENUMX
2712   BFD_RELOC_SH_GOTPLT_LOW16
2713 ENUMX
2714   BFD_RELOC_SH_GOTPLT_MEDLOW16
2715 ENUMX
2716   BFD_RELOC_SH_GOTPLT_MEDHI16
2717 ENUMX
2718   BFD_RELOC_SH_GOTPLT_HI16
2719 ENUMX
2720   BFD_RELOC_SH_PLT_LOW16
2721 ENUMX
2722   BFD_RELOC_SH_PLT_MEDLOW16
2723 ENUMX
2724   BFD_RELOC_SH_PLT_MEDHI16
2725 ENUMX
2726   BFD_RELOC_SH_PLT_HI16
2727 ENUMX
2728   BFD_RELOC_SH_GOTOFF_LOW16
2729 ENUMX
2730   BFD_RELOC_SH_GOTOFF_MEDLOW16
2731 ENUMX
2732   BFD_RELOC_SH_GOTOFF_MEDHI16
2733 ENUMX
2734   BFD_RELOC_SH_GOTOFF_HI16
2735 ENUMX
2736   BFD_RELOC_SH_GOTPC_LOW16
2737 ENUMX
2738   BFD_RELOC_SH_GOTPC_MEDLOW16
2739 ENUMX
2740   BFD_RELOC_SH_GOTPC_MEDHI16
2741 ENUMX
2742   BFD_RELOC_SH_GOTPC_HI16
2743 ENUMX
2744   BFD_RELOC_SH_COPY64
2745 ENUMX
2746   BFD_RELOC_SH_GLOB_DAT64
2747 ENUMX
2748   BFD_RELOC_SH_JMP_SLOT64
2749 ENUMX
2750   BFD_RELOC_SH_RELATIVE64
2751 ENUMX
2752   BFD_RELOC_SH_GOT10BY4
2753 ENUMX
2754   BFD_RELOC_SH_GOT10BY8
2755 ENUMX
2756   BFD_RELOC_SH_GOTPLT10BY4
2757 ENUMX
2758   BFD_RELOC_SH_GOTPLT10BY8
2759 ENUMX
2760   BFD_RELOC_SH_GOTPLT32
2761 ENUMX
2762   BFD_RELOC_SH_SHMEDIA_CODE
2763 ENUMX
2764   BFD_RELOC_SH_IMMU5
2765 ENUMX
2766   BFD_RELOC_SH_IMMS6
2767 ENUMX
2768   BFD_RELOC_SH_IMMS6BY32
2769 ENUMX
2770   BFD_RELOC_SH_IMMU6
2771 ENUMX
2772   BFD_RELOC_SH_IMMS10
2773 ENUMX
2774   BFD_RELOC_SH_IMMS10BY2
2775 ENUMX
2776   BFD_RELOC_SH_IMMS10BY4
2777 ENUMX
2778   BFD_RELOC_SH_IMMS10BY8
2779 ENUMX
2780   BFD_RELOC_SH_IMMS16
2781 ENUMX
2782   BFD_RELOC_SH_IMMU16
2783 ENUMX
2784   BFD_RELOC_SH_IMM_LOW16
2785 ENUMX
2786   BFD_RELOC_SH_IMM_LOW16_PCREL
2787 ENUMX
2788   BFD_RELOC_SH_IMM_MEDLOW16
2789 ENUMX
2790   BFD_RELOC_SH_IMM_MEDLOW16_PCREL
2791 ENUMX
2792   BFD_RELOC_SH_IMM_MEDHI16
2793 ENUMX
2794   BFD_RELOC_SH_IMM_MEDHI16_PCREL
2795 ENUMX
2796   BFD_RELOC_SH_IMM_HI16
2797 ENUMX
2798   BFD_RELOC_SH_IMM_HI16_PCREL
2799 ENUMX
2800   BFD_RELOC_SH_PT_16
2801 ENUMX
2802   BFD_RELOC_SH_TLS_GD_32
2803 ENUMX
2804   BFD_RELOC_SH_TLS_LD_32
2805 ENUMX
2806   BFD_RELOC_SH_TLS_LDO_32
2807 ENUMX
2808   BFD_RELOC_SH_TLS_IE_32
2809 ENUMX
2810   BFD_RELOC_SH_TLS_LE_32
2811 ENUMX
2812   BFD_RELOC_SH_TLS_DTPMOD32
2813 ENUMX
2814   BFD_RELOC_SH_TLS_DTPOFF32
2815 ENUMX
2816   BFD_RELOC_SH_TLS_TPOFF32
2817 ENUMDOC
2818   Renesas / SuperH SH relocs.  Not all of these appear in object files.
2819
2820 ENUM
2821   BFD_RELOC_THUMB_PCREL_BRANCH9
2822 ENUMX
2823   BFD_RELOC_THUMB_PCREL_BRANCH12
2824 ENUMX
2825   BFD_RELOC_THUMB_PCREL_BRANCH23
2826 ENUMDOC
2827   Thumb 23-, 12- and 9-bit pc-relative branches.  The lowest bit must
2828   be zero and is not stored in the instruction.
2829
2830 ENUM
2831   BFD_RELOC_ARC_B22_PCREL
2832 ENUMDOC
2833   ARC Cores relocs.
2834   ARC 22 bit pc-relative branch.  The lowest two bits must be zero and are
2835   not stored in the instruction.  The high 20 bits are installed in bits 26
2836   through 7 of the instruction.
2837 ENUM
2838   BFD_RELOC_ARC_B26
2839 ENUMDOC
2840   ARC 26 bit absolute branch.  The lowest two bits must be zero and are not
2841   stored in the instruction.  The high 24 bits are installed in bits 23
2842   through 0.
2843
2844 ENUM
2845   BFD_RELOC_D10V_10_PCREL_R
2846 ENUMDOC
2847   Mitsubishi D10V relocs.
2848   This is a 10-bit reloc with the right 2 bits
2849   assumed to be 0.
2850 ENUM
2851   BFD_RELOC_D10V_10_PCREL_L
2852 ENUMDOC
2853   Mitsubishi D10V relocs.
2854   This is a 10-bit reloc with the right 2 bits
2855   assumed to be 0.  This is the same as the previous reloc
2856   except it is in the left container, i.e.,
2857   shifted left 15 bits.
2858 ENUM
2859   BFD_RELOC_D10V_18
2860 ENUMDOC
2861   This is an 18-bit reloc with the right 2 bits
2862   assumed to be 0.
2863 ENUM
2864   BFD_RELOC_D10V_18_PCREL
2865 ENUMDOC
2866   This is an 18-bit reloc with the right 2 bits
2867   assumed to be 0.
2868
2869 ENUM
2870   BFD_RELOC_D30V_6
2871 ENUMDOC
2872   Mitsubishi D30V relocs.
2873   This is a 6-bit absolute reloc.
2874 ENUM
2875   BFD_RELOC_D30V_9_PCREL
2876 ENUMDOC
2877   This is a 6-bit pc-relative reloc with
2878   the right 3 bits assumed to be 0.
2879 ENUM
2880   BFD_RELOC_D30V_9_PCREL_R
2881 ENUMDOC
2882   This is a 6-bit pc-relative reloc with
2883   the right 3 bits assumed to be 0. Same
2884   as the previous reloc but on the right side
2885   of the container.
2886 ENUM
2887   BFD_RELOC_D30V_15
2888 ENUMDOC
2889   This is a 12-bit absolute reloc with the
2890   right 3 bitsassumed to be 0.
2891 ENUM
2892   BFD_RELOC_D30V_15_PCREL
2893 ENUMDOC
2894   This is a 12-bit pc-relative reloc with
2895   the right 3 bits assumed to be 0.
2896 ENUM
2897   BFD_RELOC_D30V_15_PCREL_R
2898 ENUMDOC
2899   This is a 12-bit pc-relative reloc with
2900   the right 3 bits assumed to be 0. Same
2901   as the previous reloc but on the right side
2902   of the container.
2903 ENUM
2904   BFD_RELOC_D30V_21
2905 ENUMDOC
2906   This is an 18-bit absolute reloc with
2907   the right 3 bits assumed to be 0.
2908 ENUM
2909   BFD_RELOC_D30V_21_PCREL
2910 ENUMDOC
2911   This is an 18-bit pc-relative reloc with
2912   the right 3 bits assumed to be 0.
2913 ENUM
2914   BFD_RELOC_D30V_21_PCREL_R
2915 ENUMDOC
2916   This is an 18-bit pc-relative reloc with
2917   the right 3 bits assumed to be 0. Same
2918   as the previous reloc but on the right side
2919   of the container.
2920 ENUM
2921   BFD_RELOC_D30V_32
2922 ENUMDOC
2923   This is a 32-bit absolute reloc.
2924 ENUM
2925   BFD_RELOC_D30V_32_PCREL
2926 ENUMDOC
2927   This is a 32-bit pc-relative reloc.
2928
2929 ENUM
2930   BFD_RELOC_DLX_HI16_S
2931 ENUMDOC
2932   DLX relocs
2933 ENUM
2934   BFD_RELOC_DLX_LO16
2935 ENUMDOC
2936   DLX relocs
2937 ENUM
2938   BFD_RELOC_DLX_JMP26
2939 ENUMDOC
2940   DLX relocs
2941
2942 ENUM
2943   BFD_RELOC_M32R_24
2944 ENUMDOC
2945   Renesas M32R (formerly Mitsubishi M32R) relocs.
2946   This is a 24 bit absolute address.
2947 ENUM
2948   BFD_RELOC_M32R_10_PCREL
2949 ENUMDOC
2950   This is a 10-bit pc-relative reloc with the right 2 bits assumed to be 0.
2951 ENUM
2952   BFD_RELOC_M32R_18_PCREL
2953 ENUMDOC
2954   This is an 18-bit reloc with the right 2 bits assumed to be 0.
2955 ENUM
2956   BFD_RELOC_M32R_26_PCREL
2957 ENUMDOC
2958   This is a 26-bit reloc with the right 2 bits assumed to be 0.
2959 ENUM
2960   BFD_RELOC_M32R_HI16_ULO
2961 ENUMDOC
2962   This is a 16-bit reloc containing the high 16 bits of an address
2963   used when the lower 16 bits are treated as unsigned.
2964 ENUM
2965   BFD_RELOC_M32R_HI16_SLO
2966 ENUMDOC
2967   This is a 16-bit reloc containing the high 16 bits of an address
2968   used when the lower 16 bits are treated as signed.
2969 ENUM
2970   BFD_RELOC_M32R_LO16
2971 ENUMDOC
2972   This is a 16-bit reloc containing the lower 16 bits of an address.
2973 ENUM
2974   BFD_RELOC_M32R_SDA16
2975 ENUMDOC
2976   This is a 16-bit reloc containing the small data area offset for use in
2977   add3, load, and store instructions.
2978 ENUM
2979   BFD_RELOC_M32R_GOT24
2980 ENUMX
2981   BFD_RELOC_M32R_26_PLTREL
2982 ENUMX
2983   BFD_RELOC_M32R_COPY
2984 ENUMX
2985   BFD_RELOC_M32R_GLOB_DAT
2986 ENUMX
2987   BFD_RELOC_M32R_JMP_SLOT
2988 ENUMX
2989   BFD_RELOC_M32R_RELATIVE
2990 ENUMX
2991   BFD_RELOC_M32R_GOTOFF
2992 ENUMX
2993   BFD_RELOC_M32R_GOTOFF_HI_ULO
2994 ENUMX
2995   BFD_RELOC_M32R_GOTOFF_HI_SLO
2996 ENUMX
2997   BFD_RELOC_M32R_GOTOFF_LO
2998 ENUMX
2999   BFD_RELOC_M32R_GOTPC24
3000 ENUMX
3001   BFD_RELOC_M32R_GOT16_HI_ULO
3002 ENUMX
3003   BFD_RELOC_M32R_GOT16_HI_SLO
3004 ENUMX
3005   BFD_RELOC_M32R_GOT16_LO
3006 ENUMX
3007   BFD_RELOC_M32R_GOTPC_HI_ULO
3008 ENUMX
3009   BFD_RELOC_M32R_GOTPC_HI_SLO
3010 ENUMX
3011   BFD_RELOC_M32R_GOTPC_LO
3012 ENUMDOC
3013   For PIC.
3014
3015
3016 ENUM
3017   BFD_RELOC_V850_9_PCREL
3018 ENUMDOC
3019   This is a 9-bit reloc
3020 ENUM
3021   BFD_RELOC_V850_22_PCREL
3022 ENUMDOC
3023   This is a 22-bit reloc
3024
3025 ENUM
3026   BFD_RELOC_V850_SDA_16_16_OFFSET
3027 ENUMDOC
3028   This is a 16 bit offset from the short data area pointer.
3029 ENUM
3030   BFD_RELOC_V850_SDA_15_16_OFFSET
3031 ENUMDOC
3032   This is a 16 bit offset (of which only 15 bits are used) from the
3033   short data area pointer.
3034 ENUM
3035   BFD_RELOC_V850_ZDA_16_16_OFFSET
3036 ENUMDOC
3037   This is a 16 bit offset from the zero data area pointer.
3038 ENUM
3039   BFD_RELOC_V850_ZDA_15_16_OFFSET
3040 ENUMDOC
3041   This is a 16 bit offset (of which only 15 bits are used) from the
3042   zero data area pointer.
3043 ENUM
3044   BFD_RELOC_V850_TDA_6_8_OFFSET
3045 ENUMDOC
3046   This is an 8 bit offset (of which only 6 bits are used) from the
3047   tiny data area pointer.
3048 ENUM
3049   BFD_RELOC_V850_TDA_7_8_OFFSET
3050 ENUMDOC
3051   This is an 8bit offset (of which only 7 bits are used) from the tiny
3052   data area pointer.
3053 ENUM
3054   BFD_RELOC_V850_TDA_7_7_OFFSET
3055 ENUMDOC
3056   This is a 7 bit offset from the tiny data area pointer.
3057 ENUM
3058   BFD_RELOC_V850_TDA_16_16_OFFSET
3059 ENUMDOC
3060   This is a 16 bit offset from the tiny data area pointer.
3061 COMMENT
3062 ENUM
3063   BFD_RELOC_V850_TDA_4_5_OFFSET
3064 ENUMDOC
3065   This is a 5 bit offset (of which only 4 bits are used) from the tiny
3066   data area pointer.
3067 ENUM
3068   BFD_RELOC_V850_TDA_4_4_OFFSET
3069 ENUMDOC
3070   This is a 4 bit offset from the tiny data area pointer.
3071 ENUM
3072   BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
3073 ENUMDOC
3074   This is a 16 bit offset from the short data area pointer, with the
3075   bits placed non-contiguously in the instruction.
3076 ENUM
3077   BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
3078 ENUMDOC
3079   This is a 16 bit offset from the zero data area pointer, with the
3080   bits placed non-contiguously in the instruction.
3081 ENUM
3082   BFD_RELOC_V850_CALLT_6_7_OFFSET
3083 ENUMDOC
3084   This is a 6 bit offset from the call table base pointer.
3085 ENUM
3086   BFD_RELOC_V850_CALLT_16_16_OFFSET
3087 ENUMDOC
3088   This is a 16 bit offset from the call table base pointer.
3089 ENUM
3090   BFD_RELOC_V850_LONGCALL
3091 ENUMDOC
3092   Used for relaxing indirect function calls.
3093 ENUM
3094   BFD_RELOC_V850_LONGJUMP
3095 ENUMDOC
3096   Used for relaxing indirect jumps.
3097 ENUM
3098   BFD_RELOC_V850_ALIGN
3099 ENUMDOC
3100   Used to maintain alignment whilst relaxing.
3101 ENUM
3102   BFD_RELOC_MN10300_32_PCREL
3103 ENUMDOC
3104   This is a 32bit pcrel reloc for the mn10300, offset by two bytes in the
3105   instruction.
3106 ENUM
3107   BFD_RELOC_MN10300_16_PCREL
3108 ENUMDOC
3109   This is a 16bit pcrel reloc for the mn10300, offset by two bytes in the
3110   instruction.
3111
3112 ENUM
3113   BFD_RELOC_TIC30_LDP
3114 ENUMDOC
3115   This is a 8bit DP reloc for the tms320c30, where the most
3116   significant 8 bits of a 24 bit word are placed into the least
3117   significant 8 bits of the opcode.
3118
3119 ENUM
3120   BFD_RELOC_TIC54X_PARTLS7
3121 ENUMDOC
3122   This is a 7bit reloc for the tms320c54x, where the least
3123   significant 7 bits of a 16 bit word are placed into the least
3124   significant 7 bits of the opcode.
3125
3126 ENUM
3127   BFD_RELOC_TIC54X_PARTMS9
3128 ENUMDOC
3129   This is a 9bit DP reloc for the tms320c54x, where the most
3130   significant 9 bits of a 16 bit word are placed into the least
3131   significant 9 bits of the opcode.
3132
3133 ENUM
3134   BFD_RELOC_TIC54X_23
3135 ENUMDOC
3136   This is an extended address 23-bit reloc for the tms320c54x.
3137
3138 ENUM
3139   BFD_RELOC_TIC54X_16_OF_23
3140 ENUMDOC
3141   This is a 16-bit reloc for the tms320c54x, where the least
3142   significant 16 bits of a 23-bit extended address are placed into
3143   the opcode.
3144
3145 ENUM
3146   BFD_RELOC_TIC54X_MS7_OF_23
3147 ENUMDOC
3148   This is a reloc for the tms320c54x, where the most
3149   significant 7 bits of a 23-bit extended address are placed into
3150   the opcode.
3151
3152 ENUM
3153   BFD_RELOC_FR30_48
3154 ENUMDOC
3155   This is a 48 bit reloc for the FR30 that stores 32 bits.
3156 ENUM
3157   BFD_RELOC_FR30_20
3158 ENUMDOC
3159   This is a 32 bit reloc for the FR30 that stores 20 bits split up into
3160   two sections.
3161 ENUM
3162   BFD_RELOC_FR30_6_IN_4
3163 ENUMDOC
3164   This is a 16 bit reloc for the FR30 that stores a 6 bit word offset in
3165   4 bits.
3166 ENUM
3167   BFD_RELOC_FR30_8_IN_8
3168 ENUMDOC
3169   This is a 16 bit reloc for the FR30 that stores an 8 bit byte offset
3170   into 8 bits.
3171 ENUM
3172   BFD_RELOC_FR30_9_IN_8
3173 ENUMDOC
3174   This is a 16 bit reloc for the FR30 that stores a 9 bit short offset
3175   into 8 bits.
3176 ENUM
3177   BFD_RELOC_FR30_10_IN_8
3178 ENUMDOC
3179   This is a 16 bit reloc for the FR30 that stores a 10 bit word offset
3180   into 8 bits.
3181 ENUM
3182   BFD_RELOC_FR30_9_PCREL
3183 ENUMDOC
3184   This is a 16 bit reloc for the FR30 that stores a 9 bit pc relative
3185   short offset into 8 bits.
3186 ENUM
3187   BFD_RELOC_FR30_12_PCREL
3188 ENUMDOC
3189   This is a 16 bit reloc for the FR30 that stores a 12 bit pc relative
3190   short offset into 11 bits.
3191
3192 ENUM
3193   BFD_RELOC_MCORE_PCREL_IMM8BY4
3194 ENUMX
3195   BFD_RELOC_MCORE_PCREL_IMM11BY2
3196 ENUMX
3197   BFD_RELOC_MCORE_PCREL_IMM4BY2
3198 ENUMX
3199   BFD_RELOC_MCORE_PCREL_32
3200 ENUMX
3201   BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2
3202 ENUMX
3203   BFD_RELOC_MCORE_RVA
3204 ENUMDOC
3205   Motorola Mcore relocations.
3206
3207 ENUM
3208   BFD_RELOC_MMIX_GETA
3209 ENUMX
3210   BFD_RELOC_MMIX_GETA_1
3211 ENUMX
3212   BFD_RELOC_MMIX_GETA_2
3213 ENUMX
3214   BFD_RELOC_MMIX_GETA_3
3215 ENUMDOC
3216   These are relocations for the GETA instruction.
3217 ENUM
3218   BFD_RELOC_MMIX_CBRANCH
3219 ENUMX
3220   BFD_RELOC_MMIX_CBRANCH_J
3221 ENUMX
3222   BFD_RELOC_MMIX_CBRANCH_1
3223 ENUMX
3224   BFD_RELOC_MMIX_CBRANCH_2
3225 ENUMX
3226   BFD_RELOC_MMIX_CBRANCH_3
3227 ENUMDOC
3228   These are relocations for a conditional branch instruction.
3229 ENUM
3230   BFD_RELOC_MMIX_PUSHJ
3231 ENUMX
3232   BFD_RELOC_MMIX_PUSHJ_1
3233 ENUMX
3234   BFD_RELOC_MMIX_PUSHJ_2
3235 ENUMX
3236   BFD_RELOC_MMIX_PUSHJ_3
3237 ENUMX
3238   BFD_RELOC_MMIX_PUSHJ_STUBBABLE
3239 ENUMDOC
3240   These are relocations for the PUSHJ instruction.
3241 ENUM
3242   BFD_RELOC_MMIX_JMP
3243 ENUMX
3244   BFD_RELOC_MMIX_JMP_1
3245 ENUMX
3246   BFD_RELOC_MMIX_JMP_2
3247 ENUMX
3248   BFD_RELOC_MMIX_JMP_3
3249 ENUMDOC
3250   These are relocations for the JMP instruction.
3251 ENUM
3252   BFD_RELOC_MMIX_ADDR19
3253 ENUMDOC
3254   This is a relocation for a relative address as in a GETA instruction or
3255   a branch.
3256 ENUM
3257   BFD_RELOC_MMIX_ADDR27
3258 ENUMDOC
3259   This is a relocation for a relative address as in a JMP instruction.
3260 ENUM
3261   BFD_RELOC_MMIX_REG_OR_BYTE
3262 ENUMDOC
3263   This is a relocation for an instruction field that may be a general
3264   register or a value 0..255.
3265 ENUM
3266   BFD_RELOC_MMIX_REG
3267 ENUMDOC
3268   This is a relocation for an instruction field that may be a general
3269   register.
3270 ENUM
3271   BFD_RELOC_MMIX_BASE_PLUS_OFFSET
3272 ENUMDOC
3273   This is a relocation for two instruction fields holding a register and
3274   an offset, the equivalent of the relocation.
3275 ENUM
3276   BFD_RELOC_MMIX_LOCAL
3277 ENUMDOC
3278   This relocation is an assertion that the expression is not allocated as
3279   a global register.  It does not modify contents.
3280
3281 ENUM
3282   BFD_RELOC_AVR_7_PCREL
3283 ENUMDOC
3284   This is a 16 bit reloc for the AVR that stores 8 bit pc relative
3285   short offset into 7 bits.
3286 ENUM
3287   BFD_RELOC_AVR_13_PCREL
3288 ENUMDOC
3289   This is a 16 bit reloc for the AVR that stores 13 bit pc relative
3290   short offset into 12 bits.
3291 ENUM
3292   BFD_RELOC_AVR_16_PM
3293 ENUMDOC
3294   This is a 16 bit reloc for the AVR that stores 17 bit value (usually
3295   program memory address) into 16 bits.
3296 ENUM
3297   BFD_RELOC_AVR_LO8_LDI
3298 ENUMDOC
3299   This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3300   data memory address) into 8 bit immediate value of LDI insn.
3301 ENUM
3302   BFD_RELOC_AVR_HI8_LDI
3303 ENUMDOC
3304   This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3305   of data memory address) into 8 bit immediate value of LDI insn.
3306 ENUM
3307   BFD_RELOC_AVR_HH8_LDI
3308 ENUMDOC
3309   This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3310   of program memory address) into 8 bit immediate value of LDI insn.
3311 ENUM
3312   BFD_RELOC_AVR_LO8_LDI_NEG
3313 ENUMDOC
3314   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3315   (usually data memory address) into 8 bit immediate value of SUBI insn.
3316 ENUM
3317   BFD_RELOC_AVR_HI8_LDI_NEG
3318 ENUMDOC
3319   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3320   (high 8 bit of data memory address) into 8 bit immediate value of
3321   SUBI insn.
3322 ENUM
3323   BFD_RELOC_AVR_HH8_LDI_NEG
3324 ENUMDOC
3325   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3326   (most high 8 bit of program memory address) into 8 bit immediate value
3327   of LDI or SUBI insn.
3328 ENUM
3329   BFD_RELOC_AVR_LO8_LDI_PM
3330 ENUMDOC
3331   This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3332   command address) into 8 bit immediate value of LDI insn.
3333 ENUM
3334   BFD_RELOC_AVR_HI8_LDI_PM
3335 ENUMDOC
3336   This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3337   of command address) into 8 bit immediate value of LDI insn.
3338 ENUM
3339   BFD_RELOC_AVR_HH8_LDI_PM
3340 ENUMDOC
3341   This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3342   of command address) into 8 bit immediate value of LDI insn.
3343 ENUM
3344   BFD_RELOC_AVR_LO8_LDI_PM_NEG
3345 ENUMDOC
3346   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3347   (usually command address) into 8 bit immediate value of SUBI insn.
3348 ENUM
3349   BFD_RELOC_AVR_HI8_LDI_PM_NEG
3350 ENUMDOC
3351   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3352   (high 8 bit of 16 bit command address) into 8 bit immediate value
3353   of SUBI insn.
3354 ENUM
3355   BFD_RELOC_AVR_HH8_LDI_PM_NEG
3356 ENUMDOC
3357   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3358   (high 6 bit of 22 bit command address) into 8 bit immediate
3359   value of SUBI insn.
3360 ENUM
3361   BFD_RELOC_AVR_CALL
3362 ENUMDOC
3363   This is a 32 bit reloc for the AVR that stores 23 bit value
3364   into 22 bits.
3365
3366 ENUM
3367   BFD_RELOC_390_12
3368 ENUMDOC
3369    Direct 12 bit.
3370 ENUM
3371   BFD_RELOC_390_GOT12
3372 ENUMDOC
3373   12 bit GOT offset.
3374 ENUM
3375   BFD_RELOC_390_PLT32
3376 ENUMDOC
3377   32 bit PC relative PLT address.
3378 ENUM
3379   BFD_RELOC_390_COPY
3380 ENUMDOC
3381   Copy symbol at runtime.
3382 ENUM
3383   BFD_RELOC_390_GLOB_DAT
3384 ENUMDOC
3385   Create GOT entry.
3386 ENUM
3387   BFD_RELOC_390_JMP_SLOT
3388 ENUMDOC
3389   Create PLT entry.
3390 ENUM
3391   BFD_RELOC_390_RELATIVE
3392 ENUMDOC
3393   Adjust by program base.
3394 ENUM
3395   BFD_RELOC_390_GOTPC
3396 ENUMDOC
3397   32 bit PC relative offset to GOT.
3398 ENUM
3399   BFD_RELOC_390_GOT16
3400 ENUMDOC
3401   16 bit GOT offset.
3402 ENUM
3403   BFD_RELOC_390_PC16DBL
3404 ENUMDOC
3405   PC relative 16 bit shifted by 1.
3406 ENUM
3407   BFD_RELOC_390_PLT16DBL
3408 ENUMDOC
3409   16 bit PC rel. PLT shifted by 1.
3410 ENUM
3411   BFD_RELOC_390_PC32DBL
3412 ENUMDOC
3413   PC relative 32 bit shifted by 1.
3414 ENUM
3415   BFD_RELOC_390_PLT32DBL
3416 ENUMDOC
3417   32 bit PC rel. PLT shifted by 1.
3418 ENUM
3419   BFD_RELOC_390_GOTPCDBL
3420 ENUMDOC
3421   32 bit PC rel. GOT shifted by 1.
3422 ENUM
3423   BFD_RELOC_390_GOT64
3424 ENUMDOC
3425   64 bit GOT offset.
3426 ENUM
3427   BFD_RELOC_390_PLT64
3428 ENUMDOC
3429   64 bit PC relative PLT address.
3430 ENUM
3431   BFD_RELOC_390_GOTENT
3432 ENUMDOC
3433   32 bit rel. offset to GOT entry.
3434 ENUM
3435   BFD_RELOC_390_GOTOFF64
3436 ENUMDOC
3437   64 bit offset to GOT.
3438 ENUM
3439   BFD_RELOC_390_GOTPLT12
3440 ENUMDOC
3441   12-bit offset to symbol-entry within GOT, with PLT handling.
3442 ENUM
3443   BFD_RELOC_390_GOTPLT16
3444 ENUMDOC
3445   16-bit offset to symbol-entry within GOT, with PLT handling.
3446 ENUM
3447   BFD_RELOC_390_GOTPLT32
3448 ENUMDOC
3449   32-bit offset to symbol-entry within GOT, with PLT handling.
3450 ENUM
3451   BFD_RELOC_390_GOTPLT64
3452 ENUMDOC
3453   64-bit offset to symbol-entry within GOT, with PLT handling.
3454 ENUM
3455   BFD_RELOC_390_GOTPLTENT
3456 ENUMDOC
3457   32-bit rel. offset to symbol-entry within GOT, with PLT handling.
3458 ENUM
3459   BFD_RELOC_390_PLTOFF16
3460 ENUMDOC
3461   16-bit rel. offset from the GOT to a PLT entry.
3462 ENUM
3463   BFD_RELOC_390_PLTOFF32
3464 ENUMDOC
3465   32-bit rel. offset from the GOT to a PLT entry.
3466 ENUM
3467   BFD_RELOC_390_PLTOFF64
3468 ENUMDOC
3469   64-bit rel. offset from the GOT to a PLT entry.
3470
3471 ENUM
3472   BFD_RELOC_390_TLS_LOAD
3473 ENUMX
3474   BFD_RELOC_390_TLS_GDCALL
3475 ENUMX
3476   BFD_RELOC_390_TLS_LDCALL
3477 ENUMX
3478   BFD_RELOC_390_TLS_GD32
3479 ENUMX
3480   BFD_RELOC_390_TLS_GD64
3481 ENUMX
3482   BFD_RELOC_390_TLS_GOTIE12
3483 ENUMX
3484   BFD_RELOC_390_TLS_GOTIE32
3485 ENUMX
3486   BFD_RELOC_390_TLS_GOTIE64
3487 ENUMX
3488   BFD_RELOC_390_TLS_LDM32
3489 ENUMX
3490   BFD_RELOC_390_TLS_LDM64
3491 ENUMX
3492   BFD_RELOC_390_TLS_IE32
3493 ENUMX
3494   BFD_RELOC_390_TLS_IE64
3495 ENUMX
3496   BFD_RELOC_390_TLS_IEENT
3497 ENUMX
3498   BFD_RELOC_390_TLS_LE32
3499 ENUMX
3500   BFD_RELOC_390_TLS_LE64
3501 ENUMX
3502   BFD_RELOC_390_TLS_LDO32
3503 ENUMX
3504   BFD_RELOC_390_TLS_LDO64
3505 ENUMX
3506   BFD_RELOC_390_TLS_DTPMOD
3507 ENUMX
3508   BFD_RELOC_390_TLS_DTPOFF
3509 ENUMX
3510   BFD_RELOC_390_TLS_TPOFF
3511 ENUMDOC
3512   s390 tls relocations.
3513
3514 ENUM
3515   BFD_RELOC_390_20
3516 ENUMX
3517   BFD_RELOC_390_GOT20
3518 ENUMX
3519   BFD_RELOC_390_GOTPLT20
3520 ENUMX
3521   BFD_RELOC_390_TLS_GOTIE20
3522 ENUMDOC
3523   Long displacement extension.
3524
3525 ENUM
3526   BFD_RELOC_IP2K_FR9
3527 ENUMDOC
3528   Scenix IP2K - 9-bit register number / data address
3529 ENUM
3530   BFD_RELOC_IP2K_BANK
3531 ENUMDOC
3532   Scenix IP2K - 4-bit register/data bank number
3533 ENUM
3534   BFD_RELOC_IP2K_ADDR16CJP
3535 ENUMDOC
3536   Scenix IP2K - low 13 bits of instruction word address
3537 ENUM
3538   BFD_RELOC_IP2K_PAGE3
3539 ENUMDOC
3540   Scenix IP2K - high 3 bits of instruction word address
3541 ENUM
3542   BFD_RELOC_IP2K_LO8DATA
3543 ENUMX
3544   BFD_RELOC_IP2K_HI8DATA
3545 ENUMX
3546   BFD_RELOC_IP2K_EX8DATA
3547 ENUMDOC
3548   Scenix IP2K - ext/low/high 8 bits of data address
3549 ENUM
3550   BFD_RELOC_IP2K_LO8INSN
3551 ENUMX
3552   BFD_RELOC_IP2K_HI8INSN
3553 ENUMDOC
3554   Scenix IP2K - low/high 8 bits of instruction word address
3555 ENUM
3556   BFD_RELOC_IP2K_PC_SKIP
3557 ENUMDOC
3558   Scenix IP2K - even/odd PC modifier to modify snb pcl.0
3559 ENUM
3560   BFD_RELOC_IP2K_TEXT
3561 ENUMDOC
3562   Scenix IP2K - 16 bit word address in text section.
3563 ENUM
3564   BFD_RELOC_IP2K_FR_OFFSET
3565 ENUMDOC
3566   Scenix IP2K - 7-bit sp or dp offset
3567 ENUM
3568   BFD_RELOC_VPE4KMATH_DATA
3569 ENUMX
3570   BFD_RELOC_VPE4KMATH_INSN
3571 ENUMDOC
3572   Scenix VPE4K coprocessor - data/insn-space addressing
3573
3574 ENUM
3575   BFD_RELOC_VTABLE_INHERIT
3576 ENUMX
3577   BFD_RELOC_VTABLE_ENTRY
3578 ENUMDOC
3579   These two relocations are used by the linker to determine which of
3580   the entries in a C++ virtual function table are actually used.  When
3581   the --gc-sections option is given, the linker will zero out the entries
3582   that are not used, so that the code for those functions need not be
3583   included in the output.
3584
3585   VTABLE_INHERIT is a zero-space relocation used to describe to the
3586   linker the inheritance tree of a C++ virtual function table.  The
3587   relocation's symbol should be the parent class' vtable, and the
3588   relocation should be located at the child vtable.
3589
3590   VTABLE_ENTRY is a zero-space relocation that describes the use of a
3591   virtual function table entry.  The reloc's symbol should refer to the
3592   table of the class mentioned in the code.  Off of that base, an offset
3593   describes the entry that is being used.  For Rela hosts, this offset
3594   is stored in the reloc's addend.  For Rel hosts, we are forced to put
3595   this offset in the reloc's section offset.
3596
3597 ENUM
3598   BFD_RELOC_IA64_IMM14
3599 ENUMX
3600   BFD_RELOC_IA64_IMM22
3601 ENUMX
3602   BFD_RELOC_IA64_IMM64
3603 ENUMX
3604   BFD_RELOC_IA64_DIR32MSB
3605 ENUMX
3606   BFD_RELOC_IA64_DIR32LSB
3607 ENUMX
3608   BFD_RELOC_IA64_DIR64MSB
3609 ENUMX
3610   BFD_RELOC_IA64_DIR64LSB
3611 ENUMX
3612   BFD_RELOC_IA64_GPREL22
3613 ENUMX
3614   BFD_RELOC_IA64_GPREL64I
3615 ENUMX
3616   BFD_RELOC_IA64_GPREL32MSB
3617 ENUMX
3618   BFD_RELOC_IA64_GPREL32LSB
3619 ENUMX
3620   BFD_RELOC_IA64_GPREL64MSB
3621 ENUMX
3622   BFD_RELOC_IA64_GPREL64LSB
3623 ENUMX
3624   BFD_RELOC_IA64_LTOFF22
3625 ENUMX
3626   BFD_RELOC_IA64_LTOFF64I
3627 ENUMX
3628   BFD_RELOC_IA64_PLTOFF22
3629 ENUMX
3630   BFD_RELOC_IA64_PLTOFF64I
3631 ENUMX
3632   BFD_RELOC_IA64_PLTOFF64MSB
3633 ENUMX
3634   BFD_RELOC_IA64_PLTOFF64LSB
3635 ENUMX
3636   BFD_RELOC_IA64_FPTR64I
3637 ENUMX
3638   BFD_RELOC_IA64_FPTR32MSB
3639 ENUMX
3640   BFD_RELOC_IA64_FPTR32LSB
3641 ENUMX
3642   BFD_RELOC_IA64_FPTR64MSB
3643 ENUMX
3644   BFD_RELOC_IA64_FPTR64LSB
3645 ENUMX
3646   BFD_RELOC_IA64_PCREL21B
3647 ENUMX
3648   BFD_RELOC_IA64_PCREL21BI
3649 ENUMX
3650   BFD_RELOC_IA64_PCREL21M
3651 ENUMX
3652   BFD_RELOC_IA64_PCREL21F
3653 ENUMX
3654   BFD_RELOC_IA64_PCREL22
3655 ENUMX
3656   BFD_RELOC_IA64_PCREL60B
3657 ENUMX
3658   BFD_RELOC_IA64_PCREL64I
3659 ENUMX
3660   BFD_RELOC_IA64_PCREL32MSB
3661 ENUMX
3662   BFD_RELOC_IA64_PCREL32LSB
3663 ENUMX
3664   BFD_RELOC_IA64_PCREL64MSB
3665 ENUMX
3666   BFD_RELOC_IA64_PCREL64LSB
3667 ENUMX
3668   BFD_RELOC_IA64_LTOFF_FPTR22
3669 ENUMX
3670   BFD_RELOC_IA64_LTOFF_FPTR64I
3671 ENUMX
3672   BFD_RELOC_IA64_LTOFF_FPTR32MSB
3673 ENUMX
3674   BFD_RELOC_IA64_LTOFF_FPTR32LSB
3675 ENUMX
3676   BFD_RELOC_IA64_LTOFF_FPTR64MSB
3677 ENUMX
3678   BFD_RELOC_IA64_LTOFF_FPTR64LSB
3679 ENUMX
3680   BFD_RELOC_IA64_SEGREL32MSB
3681 ENUMX
3682   BFD_RELOC_IA64_SEGREL32LSB
3683 ENUMX
3684   BFD_RELOC_IA64_SEGREL64MSB
3685 ENUMX
3686   BFD_RELOC_IA64_SEGREL64LSB
3687 ENUMX
3688   BFD_RELOC_IA64_SECREL32MSB
3689 ENUMX
3690   BFD_RELOC_IA64_SECREL32LSB
3691 ENUMX
3692   BFD_RELOC_IA64_SECREL64MSB
3693 ENUMX
3694   BFD_RELOC_IA64_SECREL64LSB
3695 ENUMX
3696   BFD_RELOC_IA64_REL32MSB
3697 ENUMX
3698   BFD_RELOC_IA64_REL32LSB
3699 ENUMX
3700   BFD_RELOC_IA64_REL64MSB
3701 ENUMX
3702   BFD_RELOC_IA64_REL64LSB
3703 ENUMX
3704   BFD_RELOC_IA64_LTV32MSB
3705 ENUMX
3706   BFD_RELOC_IA64_LTV32LSB
3707 ENUMX
3708   BFD_RELOC_IA64_LTV64MSB
3709 ENUMX
3710   BFD_RELOC_IA64_LTV64LSB
3711 ENUMX
3712   BFD_RELOC_IA64_IPLTMSB
3713 ENUMX
3714   BFD_RELOC_IA64_IPLTLSB
3715 ENUMX
3716   BFD_RELOC_IA64_COPY
3717 ENUMX
3718   BFD_RELOC_IA64_LTOFF22X
3719 ENUMX
3720   BFD_RELOC_IA64_LDXMOV
3721 ENUMX
3722   BFD_RELOC_IA64_TPREL14
3723 ENUMX
3724   BFD_RELOC_IA64_TPREL22
3725 ENUMX
3726   BFD_RELOC_IA64_TPREL64I
3727 ENUMX
3728   BFD_RELOC_IA64_TPREL64MSB
3729 ENUMX
3730   BFD_RELOC_IA64_TPREL64LSB
3731 ENUMX
3732   BFD_RELOC_IA64_LTOFF_TPREL22
3733 ENUMX
3734   BFD_RELOC_IA64_DTPMOD64MSB
3735 ENUMX
3736   BFD_RELOC_IA64_DTPMOD64LSB
3737 ENUMX
3738   BFD_RELOC_IA64_LTOFF_DTPMOD22
3739 ENUMX
3740   BFD_RELOC_IA64_DTPREL14
3741 ENUMX
3742   BFD_RELOC_IA64_DTPREL22
3743 ENUMX
3744   BFD_RELOC_IA64_DTPREL64I
3745 ENUMX
3746   BFD_RELOC_IA64_DTPREL32MSB
3747 ENUMX
3748   BFD_RELOC_IA64_DTPREL32LSB
3749 ENUMX
3750   BFD_RELOC_IA64_DTPREL64MSB
3751 ENUMX
3752   BFD_RELOC_IA64_DTPREL64LSB
3753 ENUMX
3754   BFD_RELOC_IA64_LTOFF_DTPREL22
3755 ENUMDOC
3756   Intel IA64 Relocations.
3757
3758 ENUM
3759   BFD_RELOC_M68HC11_HI8
3760 ENUMDOC
3761   Motorola 68HC11 reloc.
3762   This is the 8 bit high part of an absolute address.
3763 ENUM
3764   BFD_RELOC_M68HC11_LO8
3765 ENUMDOC
3766   Motorola 68HC11 reloc.
3767   This is the 8 bit low part of an absolute address.
3768 ENUM
3769   BFD_RELOC_M68HC11_3B
3770 ENUMDOC
3771   Motorola 68HC11 reloc.
3772   This is the 3 bit of a value.
3773 ENUM
3774   BFD_RELOC_M68HC11_RL_JUMP
3775 ENUMDOC
3776   Motorola 68HC11 reloc.
3777   This reloc marks the beginning of a jump/call instruction.
3778   It is used for linker relaxation to correctly identify beginning
3779   of instruction and change some branches to use PC-relative
3780   addressing mode.
3781 ENUM
3782   BFD_RELOC_M68HC11_RL_GROUP
3783 ENUMDOC
3784   Motorola 68HC11 reloc.
3785   This reloc marks a group of several instructions that gcc generates
3786   and for which the linker relaxation pass can modify and/or remove
3787   some of them.
3788 ENUM
3789   BFD_RELOC_M68HC11_LO16
3790 ENUMDOC
3791   Motorola 68HC11 reloc.
3792   This is the 16-bit lower part of an address.  It is used for 'call'
3793   instruction to specify the symbol address without any special
3794   transformation (due to memory bank window).
3795 ENUM
3796   BFD_RELOC_M68HC11_PAGE
3797 ENUMDOC
3798   Motorola 68HC11 reloc.
3799   This is a 8-bit reloc that specifies the page number of an address.
3800   It is used by 'call' instruction to specify the page number of
3801   the symbol.
3802 ENUM
3803   BFD_RELOC_M68HC11_24
3804 ENUMDOC
3805   Motorola 68HC11 reloc.
3806   This is a 24-bit reloc that represents the address with a 16-bit
3807   value and a 8-bit page number.  The symbol address is transformed
3808   to follow the 16K memory bank of 68HC12 (seen as mapped in the window).
3809 ENUM
3810   BFD_RELOC_M68HC12_5B
3811 ENUMDOC
3812   Motorola 68HC12 reloc.
3813   This is the 5 bits of a value.
3814
3815 ENUM
3816   BFD_RELOC_16C_NUM08
3817 ENUMX
3818   BFD_RELOC_16C_NUM08_C
3819 ENUMX
3820   BFD_RELOC_16C_NUM16
3821 ENUMX
3822   BFD_RELOC_16C_NUM16_C
3823 ENUMX
3824   BFD_RELOC_16C_NUM32
3825 ENUMX
3826   BFD_RELOC_16C_NUM32_C
3827 ENUMX
3828   BFD_RELOC_16C_DISP04
3829 ENUMX
3830   BFD_RELOC_16C_DISP04_C
3831 ENUMX
3832   BFD_RELOC_16C_DISP08
3833 ENUMX
3834   BFD_RELOC_16C_DISP08_C
3835 ENUMX
3836   BFD_RELOC_16C_DISP16
3837 ENUMX
3838   BFD_RELOC_16C_DISP16_C
3839 ENUMX
3840   BFD_RELOC_16C_DISP24
3841 ENUMX
3842   BFD_RELOC_16C_DISP24_C
3843 ENUMX
3844   BFD_RELOC_16C_DISP24a
3845 ENUMX
3846   BFD_RELOC_16C_DISP24a_C
3847 ENUMX
3848   BFD_RELOC_16C_REG04
3849 ENUMX
3850   BFD_RELOC_16C_REG04_C
3851 ENUMX
3852   BFD_RELOC_16C_REG04a
3853 ENUMX
3854   BFD_RELOC_16C_REG04a_C
3855 ENUMX
3856   BFD_RELOC_16C_REG14
3857 ENUMX
3858   BFD_RELOC_16C_REG14_C
3859 ENUMX
3860   BFD_RELOC_16C_REG16
3861 ENUMX
3862   BFD_RELOC_16C_REG16_C
3863 ENUMX
3864   BFD_RELOC_16C_REG20
3865 ENUMX
3866   BFD_RELOC_16C_REG20_C
3867 ENUMX
3868   BFD_RELOC_16C_ABS20
3869 ENUMX
3870   BFD_RELOC_16C_ABS20_C
3871 ENUMX
3872   BFD_RELOC_16C_ABS24
3873 ENUMX
3874   BFD_RELOC_16C_ABS24_C
3875 ENUMX
3876   BFD_RELOC_16C_IMM04
3877 ENUMX
3878   BFD_RELOC_16C_IMM04_C
3879 ENUMX
3880   BFD_RELOC_16C_IMM16
3881 ENUMX
3882   BFD_RELOC_16C_IMM16_C
3883 ENUMX
3884   BFD_RELOC_16C_IMM20
3885 ENUMX
3886   BFD_RELOC_16C_IMM20_C
3887 ENUMX
3888   BFD_RELOC_16C_IMM24
3889 ENUMX
3890   BFD_RELOC_16C_IMM24_C
3891 ENUMX
3892   BFD_RELOC_16C_IMM32
3893 ENUMX
3894   BFD_RELOC_16C_IMM32_C
3895 ENUMDOC
3896   NS CR16C Relocations.
3897
3898 ENUM
3899   BFD_RELOC_CRX_REL4
3900 ENUMX
3901   BFD_RELOC_CRX_REL8
3902 ENUMX
3903   BFD_RELOC_CRX_REL8_CMP
3904 ENUMX
3905   BFD_RELOC_CRX_REL16
3906 ENUMX
3907   BFD_RELOC_CRX_REL24
3908 ENUMX
3909   BFD_RELOC_CRX_REL32
3910 ENUMX
3911   BFD_RELOC_CRX_REGREL12
3912 ENUMX
3913   BFD_RELOC_CRX_REGREL22
3914 ENUMX
3915   BFD_RELOC_CRX_REGREL28
3916 ENUMX
3917   BFD_RELOC_CRX_REGREL32
3918 ENUMX
3919   BFD_RELOC_CRX_ABS16
3920 ENUMX
3921   BFD_RELOC_CRX_ABS32
3922 ENUMX
3923   BFD_RELOC_CRX_NUM8
3924 ENUMX
3925   BFD_RELOC_CRX_NUM16
3926 ENUMX
3927   BFD_RELOC_CRX_NUM32
3928 ENUMX
3929   BFD_RELOC_CRX_IMM16
3930 ENUMX
3931   BFD_RELOC_CRX_IMM32
3932 ENUMX
3933   BFD_RELOC_CRX_SWITCH8
3934 ENUMX
3935   BFD_RELOC_CRX_SWITCH16
3936 ENUMX
3937   BFD_RELOC_CRX_SWITCH32
3938 ENUMDOC
3939   NS CRX Relocations.
3940
3941 ENUM
3942   BFD_RELOC_CRIS_BDISP8
3943 ENUMX
3944   BFD_RELOC_CRIS_UNSIGNED_5
3945 ENUMX
3946   BFD_RELOC_CRIS_SIGNED_6
3947 ENUMX
3948   BFD_RELOC_CRIS_UNSIGNED_6
3949 ENUMX
3950   BFD_RELOC_CRIS_SIGNED_8
3951 ENUMX
3952   BFD_RELOC_CRIS_UNSIGNED_8
3953 ENUMX
3954   BFD_RELOC_CRIS_SIGNED_16
3955 ENUMX
3956   BFD_RELOC_CRIS_UNSIGNED_16
3957 ENUMX
3958   BFD_RELOC_CRIS_LAPCQ_OFFSET
3959 ENUMX
3960   BFD_RELOC_CRIS_UNSIGNED_4
3961 ENUMDOC
3962   These relocs are only used within the CRIS assembler.  They are not
3963   (at present) written to any object files.
3964 ENUM
3965   BFD_RELOC_CRIS_COPY
3966 ENUMX
3967   BFD_RELOC_CRIS_GLOB_DAT
3968 ENUMX
3969   BFD_RELOC_CRIS_JUMP_SLOT
3970 ENUMX
3971   BFD_RELOC_CRIS_RELATIVE
3972 ENUMDOC
3973   Relocs used in ELF shared libraries for CRIS.
3974 ENUM
3975   BFD_RELOC_CRIS_32_GOT
3976 ENUMDOC
3977   32-bit offset to symbol-entry within GOT.
3978 ENUM
3979   BFD_RELOC_CRIS_16_GOT
3980 ENUMDOC
3981   16-bit offset to symbol-entry within GOT.
3982 ENUM
3983   BFD_RELOC_CRIS_32_GOTPLT
3984 ENUMDOC
3985   32-bit offset to symbol-entry within GOT, with PLT handling.
3986 ENUM
3987   BFD_RELOC_CRIS_16_GOTPLT
3988 ENUMDOC
3989   16-bit offset to symbol-entry within GOT, with PLT handling.
3990 ENUM
3991   BFD_RELOC_CRIS_32_GOTREL
3992 ENUMDOC
3993   32-bit offset to symbol, relative to GOT.
3994 ENUM
3995   BFD_RELOC_CRIS_32_PLT_GOTREL
3996 ENUMDOC
3997   32-bit offset to symbol with PLT entry, relative to GOT.
3998 ENUM
3999   BFD_RELOC_CRIS_32_PLT_PCREL
4000 ENUMDOC
4001   32-bit offset to symbol with PLT entry, relative to this relocation.
4002
4003 ENUM
4004   BFD_RELOC_860_COPY
4005 ENUMX
4006   BFD_RELOC_860_GLOB_DAT
4007 ENUMX
4008   BFD_RELOC_860_JUMP_SLOT
4009 ENUMX
4010   BFD_RELOC_860_RELATIVE
4011 ENUMX
4012   BFD_RELOC_860_PC26
4013 ENUMX
4014   BFD_RELOC_860_PLT26
4015 ENUMX
4016   BFD_RELOC_860_PC16
4017 ENUMX
4018   BFD_RELOC_860_LOW0
4019 ENUMX
4020   BFD_RELOC_860_SPLIT0
4021 ENUMX
4022   BFD_RELOC_860_LOW1
4023 ENUMX
4024   BFD_RELOC_860_SPLIT1
4025 ENUMX
4026   BFD_RELOC_860_LOW2
4027 ENUMX
4028   BFD_RELOC_860_SPLIT2
4029 ENUMX
4030   BFD_RELOC_860_LOW3
4031 ENUMX
4032   BFD_RELOC_860_LOGOT0
4033 ENUMX
4034   BFD_RELOC_860_SPGOT0
4035 ENUMX
4036   BFD_RELOC_860_LOGOT1
4037 ENUMX
4038   BFD_RELOC_860_SPGOT1
4039 ENUMX
4040   BFD_RELOC_860_LOGOTOFF0
4041 ENUMX
4042   BFD_RELOC_860_SPGOTOFF0
4043 ENUMX
4044   BFD_RELOC_860_LOGOTOFF1
4045 ENUMX
4046   BFD_RELOC_860_SPGOTOFF1
4047 ENUMX
4048   BFD_RELOC_860_LOGOTOFF2
4049 ENUMX
4050   BFD_RELOC_860_LOGOTOFF3
4051 ENUMX
4052   BFD_RELOC_860_LOPC
4053 ENUMX
4054   BFD_RELOC_860_HIGHADJ
4055 ENUMX
4056   BFD_RELOC_860_HAGOT
4057 ENUMX
4058   BFD_RELOC_860_HAGOTOFF
4059 ENUMX
4060   BFD_RELOC_860_HAPC
4061 ENUMX
4062   BFD_RELOC_860_HIGH
4063 ENUMX
4064   BFD_RELOC_860_HIGOT
4065 ENUMX
4066   BFD_RELOC_860_HIGOTOFF
4067 ENUMDOC
4068   Intel i860 Relocations.
4069
4070 ENUM
4071   BFD_RELOC_OPENRISC_ABS_26
4072 ENUMX
4073   BFD_RELOC_OPENRISC_REL_26
4074 ENUMDOC
4075   OpenRISC Relocations.
4076
4077 ENUM
4078   BFD_RELOC_H8_DIR16A8
4079 ENUMX
4080   BFD_RELOC_H8_DIR16R8
4081 ENUMX
4082   BFD_RELOC_H8_DIR24A8
4083 ENUMX
4084   BFD_RELOC_H8_DIR24R8
4085 ENUMX
4086   BFD_RELOC_H8_DIR32A16
4087 ENUMDOC
4088   H8 elf Relocations.
4089
4090 ENUM
4091   BFD_RELOC_XSTORMY16_REL_12
4092 ENUMX
4093   BFD_RELOC_XSTORMY16_12
4094 ENUMX
4095   BFD_RELOC_XSTORMY16_24
4096 ENUMX
4097   BFD_RELOC_XSTORMY16_FPTR16
4098 ENUMDOC
4099   Sony Xstormy16 Relocations.
4100
4101 ENUM
4102   BFD_RELOC_VAX_GLOB_DAT
4103 ENUMX
4104   BFD_RELOC_VAX_JMP_SLOT
4105 ENUMX
4106   BFD_RELOC_VAX_RELATIVE
4107 ENUMDOC
4108   Relocations used by VAX ELF.
4109
4110 ENUM
4111   BFD_RELOC_MSP430_10_PCREL
4112 ENUMX
4113   BFD_RELOC_MSP430_16_PCREL
4114 ENUMX
4115   BFD_RELOC_MSP430_16
4116 ENUMX
4117   BFD_RELOC_MSP430_16_PCREL_BYTE
4118 ENUMX
4119   BFD_RELOC_MSP430_16_BYTE
4120 ENUMX
4121   BFD_RELOC_MSP430_2X_PCREL
4122 ENUMX
4123   BFD_RELOC_MSP430_RL_PCREL
4124 ENUMDOC
4125   msp430 specific relocation codes
4126
4127 ENUM
4128   BFD_RELOC_IQ2000_OFFSET_16
4129 ENUMX
4130   BFD_RELOC_IQ2000_OFFSET_21
4131 ENUMX
4132   BFD_RELOC_IQ2000_UHI16
4133 ENUMDOC
4134   IQ2000 Relocations.
4135
4136 ENUM
4137   BFD_RELOC_XTENSA_RTLD
4138 ENUMDOC
4139   Special Xtensa relocation used only by PLT entries in ELF shared
4140   objects to indicate that the runtime linker should set the value
4141   to one of its own internal functions or data structures.
4142 ENUM
4143   BFD_RELOC_XTENSA_GLOB_DAT
4144 ENUMX
4145   BFD_RELOC_XTENSA_JMP_SLOT
4146 ENUMX
4147   BFD_RELOC_XTENSA_RELATIVE
4148 ENUMDOC
4149   Xtensa relocations for ELF shared objects.
4150 ENUM
4151   BFD_RELOC_XTENSA_PLT
4152 ENUMDOC
4153   Xtensa relocation used in ELF object files for symbols that may require
4154   PLT entries.  Otherwise, this is just a generic 32-bit relocation.
4155 ENUM
4156   BFD_RELOC_XTENSA_DIFF8
4157 ENUMX
4158   BFD_RELOC_XTENSA_DIFF16
4159 ENUMX
4160   BFD_RELOC_XTENSA_DIFF32
4161 ENUMDOC
4162   Xtensa relocations to mark the difference of two local symbols.
4163   These are only needed to support linker relaxation and can be ignored
4164   when not relaxing.  The field is set to the value of the difference
4165   assuming no relaxation.  The relocation encodes the position of the
4166   first symbol so the linker can determine whether to adjust the field
4167   value.
4168 ENUM
4169   BFD_RELOC_XTENSA_SLOT0_OP
4170 ENUMX
4171   BFD_RELOC_XTENSA_SLOT1_OP
4172 ENUMX
4173   BFD_RELOC_XTENSA_SLOT2_OP
4174 ENUMX
4175   BFD_RELOC_XTENSA_SLOT3_OP
4176 ENUMX
4177   BFD_RELOC_XTENSA_SLOT4_OP
4178 ENUMX
4179   BFD_RELOC_XTENSA_SLOT5_OP
4180 ENUMX
4181   BFD_RELOC_XTENSA_SLOT6_OP
4182 ENUMX
4183   BFD_RELOC_XTENSA_SLOT7_OP
4184 ENUMX
4185   BFD_RELOC_XTENSA_SLOT8_OP
4186 ENUMX
4187   BFD_RELOC_XTENSA_SLOT9_OP
4188 ENUMX
4189   BFD_RELOC_XTENSA_SLOT10_OP
4190 ENUMX
4191   BFD_RELOC_XTENSA_SLOT11_OP
4192 ENUMX
4193   BFD_RELOC_XTENSA_SLOT12_OP
4194 ENUMX
4195   BFD_RELOC_XTENSA_SLOT13_OP
4196 ENUMX
4197   BFD_RELOC_XTENSA_SLOT14_OP
4198 ENUMDOC
4199   Generic Xtensa relocations for instruction operands.  Only the slot
4200   number is encoded in the relocation.  The relocation applies to the
4201   last PC-relative immediate operand, or if there are no PC-relative
4202   immediates, to the last immediate operand.
4203 ENUM
4204   BFD_RELOC_XTENSA_SLOT0_ALT
4205 ENUMX
4206   BFD_RELOC_XTENSA_SLOT1_ALT
4207 ENUMX
4208   BFD_RELOC_XTENSA_SLOT2_ALT
4209 ENUMX
4210   BFD_RELOC_XTENSA_SLOT3_ALT
4211 ENUMX
4212   BFD_RELOC_XTENSA_SLOT4_ALT
4213 ENUMX
4214   BFD_RELOC_XTENSA_SLOT5_ALT
4215 ENUMX
4216   BFD_RELOC_XTENSA_SLOT6_ALT
4217 ENUMX
4218   BFD_RELOC_XTENSA_SLOT7_ALT
4219 ENUMX
4220   BFD_RELOC_XTENSA_SLOT8_ALT
4221 ENUMX
4222   BFD_RELOC_XTENSA_SLOT9_ALT
4223 ENUMX
4224   BFD_RELOC_XTENSA_SLOT10_ALT
4225 ENUMX
4226   BFD_RELOC_XTENSA_SLOT11_ALT
4227 ENUMX
4228   BFD_RELOC_XTENSA_SLOT12_ALT
4229 ENUMX
4230   BFD_RELOC_XTENSA_SLOT13_ALT
4231 ENUMX
4232   BFD_RELOC_XTENSA_SLOT14_ALT
4233 ENUMDOC
4234   Alternate Xtensa relocations.  Only the slot is encoded in the
4235   relocation.  The meaning of these relocations is opcode-specific.
4236 ENUM
4237   BFD_RELOC_XTENSA_OP0
4238 ENUMX
4239   BFD_RELOC_XTENSA_OP1
4240 ENUMX
4241   BFD_RELOC_XTENSA_OP2
4242 ENUMDOC
4243   Xtensa relocations for backward compatibility.  These have all been
4244   replaced by BFD_RELOC_XTENSA_SLOT0_OP.
4245 ENUM
4246   BFD_RELOC_XTENSA_ASM_EXPAND
4247 ENUMDOC
4248   Xtensa relocation to mark that the assembler expanded the
4249   instructions from an original target.  The expansion size is
4250   encoded in the reloc size.
4251 ENUM
4252   BFD_RELOC_XTENSA_ASM_SIMPLIFY
4253 ENUMDOC
4254   Xtensa relocation to mark that the linker should simplify
4255   assembler-expanded instructions.  This is commonly used
4256   internally by the linker after analysis of a
4257   BFD_RELOC_XTENSA_ASM_EXPAND.
4258
4259 ENDSENUM
4260   BFD_RELOC_UNUSED
4261 CODE_FRAGMENT
4262 .
4263 .typedef enum bfd_reloc_code_real bfd_reloc_code_real_type;
4264 */
4265
4266 /*
4267 FUNCTION
4268         bfd_reloc_type_lookup
4269
4270 SYNOPSIS
4271         reloc_howto_type *bfd_reloc_type_lookup
4272           (bfd *abfd, bfd_reloc_code_real_type code);
4273
4274 DESCRIPTION
4275         Return a pointer to a howto structure which, when
4276         invoked, will perform the relocation @var{code} on data from the
4277         architecture noted.
4278
4279 */
4280
4281 reloc_howto_type *
4282 bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
4283 {
4284   return BFD_SEND (abfd, reloc_type_lookup, (abfd, code));
4285 }
4286
4287 static reloc_howto_type bfd_howto_32 =
4288 HOWTO (0, 00, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "VRT32", FALSE, 0xffffffff, 0xffffffff, TRUE);
4289
4290 /*
4291 INTERNAL_FUNCTION
4292         bfd_default_reloc_type_lookup
4293
4294 SYNOPSIS
4295         reloc_howto_type *bfd_default_reloc_type_lookup
4296           (bfd *abfd, bfd_reloc_code_real_type  code);
4297
4298 DESCRIPTION
4299         Provides a default relocation lookup routine for any architecture.
4300
4301 */
4302
4303 reloc_howto_type *
4304 bfd_default_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
4305 {
4306   switch (code)
4307     {
4308     case BFD_RELOC_CTOR:
4309       /* The type of reloc used in a ctor, which will be as wide as the
4310          address - so either a 64, 32, or 16 bitter.  */
4311       switch (bfd_get_arch_info (abfd)->bits_per_address)
4312         {
4313         case 64:
4314           BFD_FAIL ();
4315         case 32:
4316           return &bfd_howto_32;
4317         case 16:
4318           BFD_FAIL ();
4319         default:
4320           BFD_FAIL ();
4321         }
4322     default:
4323       BFD_FAIL ();
4324     }
4325   return NULL;
4326 }
4327
4328 /*
4329 FUNCTION
4330         bfd_get_reloc_code_name
4331
4332 SYNOPSIS
4333         const char *bfd_get_reloc_code_name (bfd_reloc_code_real_type code);
4334
4335 DESCRIPTION
4336         Provides a printable name for the supplied relocation code.
4337         Useful mainly for printing error messages.
4338 */
4339
4340 const char *
4341 bfd_get_reloc_code_name (bfd_reloc_code_real_type code)
4342 {
4343   if (code > BFD_RELOC_UNUSED)
4344     return 0;
4345   return bfd_reloc_code_real_names[code];
4346 }
4347
4348 /*
4349 INTERNAL_FUNCTION
4350         bfd_generic_relax_section
4351
4352 SYNOPSIS
4353         bfd_boolean bfd_generic_relax_section
4354           (bfd *abfd,
4355            asection *section,
4356            struct bfd_link_info *,
4357            bfd_boolean *);
4358
4359 DESCRIPTION
4360         Provides default handling for relaxing for back ends which
4361         don't do relaxing.
4362 */
4363
4364 bfd_boolean
4365 bfd_generic_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
4366                            asection *section ATTRIBUTE_UNUSED,
4367                            struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
4368                            bfd_boolean *again)
4369 {
4370   *again = FALSE;
4371   return TRUE;
4372 }
4373
4374 /*
4375 INTERNAL_FUNCTION
4376         bfd_generic_gc_sections
4377
4378 SYNOPSIS
4379         bfd_boolean bfd_generic_gc_sections
4380           (bfd *, struct bfd_link_info *);
4381
4382 DESCRIPTION
4383         Provides default handling for relaxing for back ends which
4384         don't do section gc -- i.e., does nothing.
4385 */
4386
4387 bfd_boolean
4388 bfd_generic_gc_sections (bfd *abfd ATTRIBUTE_UNUSED,
4389                          struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4390 {
4391   return TRUE;
4392 }
4393
4394 /*
4395 INTERNAL_FUNCTION
4396         bfd_generic_merge_sections
4397
4398 SYNOPSIS
4399         bfd_boolean bfd_generic_merge_sections
4400           (bfd *, struct bfd_link_info *);
4401
4402 DESCRIPTION
4403         Provides default handling for SEC_MERGE section merging for back ends
4404         which don't have SEC_MERGE support -- i.e., does nothing.
4405 */
4406
4407 bfd_boolean
4408 bfd_generic_merge_sections (bfd *abfd ATTRIBUTE_UNUSED,
4409                             struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4410 {
4411   return TRUE;
4412 }
4413
4414 /*
4415 INTERNAL_FUNCTION
4416         bfd_generic_get_relocated_section_contents
4417
4418 SYNOPSIS
4419         bfd_byte *bfd_generic_get_relocated_section_contents
4420           (bfd *abfd,
4421            struct bfd_link_info *link_info,
4422            struct bfd_link_order *link_order,
4423            bfd_byte *data,
4424            bfd_boolean relocatable,
4425            asymbol **symbols);
4426
4427 DESCRIPTION
4428         Provides default handling of relocation effort for back ends
4429         which can't be bothered to do it efficiently.
4430
4431 */
4432
4433 bfd_byte *
4434 bfd_generic_get_relocated_section_contents (bfd *abfd,
4435                                             struct bfd_link_info *link_info,
4436                                             struct bfd_link_order *link_order,
4437                                             bfd_byte *data,
4438                                             bfd_boolean relocatable,
4439                                             asymbol **symbols)
4440 {
4441   /* Get enough memory to hold the stuff.  */
4442   bfd *input_bfd = link_order->u.indirect.section->owner;
4443   asection *input_section = link_order->u.indirect.section;
4444
4445   long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
4446   arelent **reloc_vector = NULL;
4447   long reloc_count;
4448   bfd_size_type sz;
4449
4450   if (reloc_size < 0)
4451     goto error_return;
4452
4453   reloc_vector = bfd_malloc (reloc_size);
4454   if (reloc_vector == NULL && reloc_size != 0)
4455     goto error_return;
4456
4457   /* Read in the section.  */
4458   sz = input_section->rawsize ? input_section->rawsize : input_section->size;
4459   if (!bfd_get_section_contents (input_bfd, input_section, data, 0, sz))
4460     goto error_return;
4461
4462   reloc_count = bfd_canonicalize_reloc (input_bfd,
4463                                         input_section,
4464                                         reloc_vector,
4465                                         symbols);
4466   if (reloc_count < 0)
4467     goto error_return;
4468
4469   if (reloc_count > 0)
4470     {
4471       arelent **parent;
4472       for (parent = reloc_vector; *parent != NULL; parent++)
4473         {
4474           char *error_message = NULL;
4475           bfd_reloc_status_type r =
4476             bfd_perform_relocation (input_bfd,
4477                                     *parent,
4478                                     data,
4479                                     input_section,
4480                                     relocatable ? abfd : NULL,
4481                                     &error_message);
4482
4483           if (relocatable)
4484             {
4485               asection *os = input_section->output_section;
4486
4487               /* A partial link, so keep the relocs.  */
4488               os->orelocation[os->reloc_count] = *parent;
4489               os->reloc_count++;
4490             }
4491
4492           if (r != bfd_reloc_ok)
4493             {
4494               switch (r)
4495                 {
4496                 case bfd_reloc_undefined:
4497                   if (!((*link_info->callbacks->undefined_symbol)
4498                         (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4499                          input_bfd, input_section, (*parent)->address,
4500                          TRUE)))
4501                     goto error_return;
4502                   break;
4503                 case bfd_reloc_dangerous:
4504                   BFD_ASSERT (error_message != NULL);
4505                   if (!((*link_info->callbacks->reloc_dangerous)
4506                         (link_info, error_message, input_bfd, input_section,
4507                          (*parent)->address)))
4508                     goto error_return;
4509                   break;
4510                 case bfd_reloc_overflow:
4511                   if (!((*link_info->callbacks->reloc_overflow)
4512                         (link_info, NULL,
4513                          bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4514                          (*parent)->howto->name, (*parent)->addend,
4515                          input_bfd, input_section, (*parent)->address)))
4516                     goto error_return;
4517                   break;
4518                 case bfd_reloc_outofrange:
4519                 default:
4520                   abort ();
4521                   break;
4522                 }
4523
4524             }
4525         }
4526     }
4527   if (reloc_vector != NULL)
4528     free (reloc_vector);
4529   return data;
4530
4531 error_return:
4532   if (reloc_vector != NULL)
4533     free (reloc_vector);
4534   return NULL;
4535 }