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 > (input_section->_cooked_size
 627                               / bfd_octets_per_byte (abfd)))
 628     return bfd_reloc_outofrange;
 629
 630   /* Work out which section the relocation is targeted at and the
 631      initial relocation command value.  */
 632
 633   /* Get symbol value.  (Common symbols are special.)  */
 634   if (bfd_is_com_section (symbol->section))
 635     relocation = 0;
 636   else
 637     relocation = symbol->value;
 638
 639   reloc_target_output_section = symbol->section->output_section;
 640
 641   /* Convert input-section-relative symbol value to absolute.  */
 642   if ((output_bfd && ! howto->partial_inplace)
 643       || reloc_target_output_section == NULL)
 644     output_base = 0;
 645   else
 646     output_base = reloc_target_output_section->vma;
 647
 648   relocation += output_base + symbol->section->output_offset;
 649
 650   /* Add in supplied addend.  */
 651   relocation += reloc_entry->addend;
 652
 653   /* Here the variable relocation holds the final address of the
 654      symbol we are relocating against, plus any addend.  */
 655
 656   if (howto->pc_relative)
 657     {
 658       /* This is a PC relative relocation.  We want to set RELOCATION
 659          to the distance between the address of the symbol and the
 660          location.  RELOCATION is already the address of the symbol.
 661
 662          We start by subtracting the address of the section containing
 663          the location.
 664
 665          If pcrel_offset is set, we must further subtract the position
 666          of the location within the section.  Some targets arrange for
 667          the addend to be the negative of the position of the location
 668          within the section; for example, i386-aout does this.  For
 669          i386-aout, pcrel_offset is FALSE.  Some other targets do not
 670          include the position of the location; for example, m88kbcs,
 671          or ELF.  For those targets, pcrel_offset is TRUE.
 672
 673          If we are producing relocatable output, then we must ensure
 674          that this reloc will be correctly computed when the final
 675          relocation is done.  If pcrel_offset is FALSE we want to wind
 676          up with the negative of the location within the section,
 677          which means we must adjust the existing addend by the change
 678          in the location within the section.  If pcrel_offset is TRUE
 679          we do not want to adjust the existing addend at all.
 680
 681          FIXME: This seems logical to me, but for the case of
 682          producing relocatable output it is not what the code
 683          actually does.  I don't want to change it, because it seems
 684          far too likely that something will break.  */
 685
 686       relocation -=
 687         input_section->output_section->vma + input_section->output_offset;
 688
 689       if (howto->pcrel_offset)
 690         relocation -= reloc_entry->address;
 691     }
 692
 693   if (output_bfd != NULL)
 694     {
 695       if (! howto->partial_inplace)
 696         {
 697           /* This is a partial relocation, and we want to apply the relocation
 698              to the reloc entry rather than the raw data. Modify the reloc
 699              inplace to reflect what we now know.  */
 700           reloc_entry->addend = relocation;
 701           reloc_entry->address += input_section->output_offset;
 702           return flag;
 703         }
 704       else
 705         {
 706           /* This is a partial relocation, but inplace, so modify the
 707              reloc record a bit.
 708
 709              If we've relocated with a symbol with a section, change
 710              into a ref to the section belonging to the symbol.  */
 711
 712           reloc_entry->address += input_section->output_offset;
 713
 714           /* WTF?? */
 715           if (abfd->xvec->flavour == bfd_target_coff_flavour
 716               && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
 717               && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
 718             {
 719 #if 1
 720               /* For m68k-coff, the addend was being subtracted twice during
 721                  relocation with -r.  Removing the line below this comment
 722                  fixes that problem; see PR 2953.
 723
 724 However, Ian wrote the following, regarding removing the line below,
 725 which explains why it is still enabled:  --djm
 726
 727 If you put a patch like that into BFD you need to check all the COFF
 728 linkers.  I am fairly certain that patch will break coff-i386 (e.g.,
 729 SCO); see coff_i386_reloc in coff-i386.c where I worked around the
 730 problem in a different way.  There may very well be a reason that the
 731 code works as it does.
 732
 733 Hmmm.  The first obvious point is that bfd_perform_relocation should
 734 not have any tests that depend upon the flavour.  It's seem like
 735 entirely the wrong place for such a thing.  The second obvious point
 736 is that the current code ignores the reloc addend when producing
 737 relocatable output for COFF.  That's peculiar.  In fact, I really
 738 have no idea what the point of the line you want to remove is.
 739
 740 A typical COFF reloc subtracts the old value of the symbol and adds in
 741 the new value to the location in the object file (if it's a pc
 742 relative reloc it adds the difference between the symbol value and the
 743 location).  When relocating we need to preserve that property.
 744
 745 BFD handles this by setting the addend to the negative of the old
 746 value of the symbol.  Unfortunately it handles common symbols in a
 747 non-standard way (it doesn't subtract the old value) but that's a
 748 different story (we can't change it without losing backward
 749 compatibility with old object files) (coff-i386 does subtract the old
 750 value, to be compatible with existing coff-i386 targets, like SCO).
 751
 752 So everything works fine when not producing relocatable output.  When
 753 we are producing relocatable output, logically we should do exactly
 754 what we do when not producing relocatable output.  Therefore, your
 755 patch is correct.  In fact, it should probably always just set
 756 reloc_entry->addend to 0 for all cases, since it is, in fact, going to
 757 add the value into the object file.  This won't hurt the COFF code,
 758 which doesn't use the addend; I'm not sure what it will do to other
 759 formats (the thing to check for would be whether any formats both use
 760 the addend and set partial_inplace).
 761
 762 When I wanted to make coff-i386 produce relocatable output, I ran
 763 into the problem that you are running into: I wanted to remove that
 764 line.  Rather than risk it, I made the coff-i386 relocs use a special
 765 function; it's coff_i386_reloc in coff-i386.c.  The function
 766 specifically adds the addend field into the object file, knowing that
 767 bfd_perform_relocation is not going to.  If you remove that line, then
 768 coff-i386.c will wind up adding the addend field in twice.  It's
 769 trivial to fix; it just needs to be done.
 770
 771 The problem with removing the line is just that it may break some
 772 working code.  With BFD it's hard to be sure of anything.  The right
 773 way to deal with this is simply to build and test at least all the
 774 supported COFF targets.  It should be straightforward if time and disk
 775 space consuming.  For each target:
 776     1) build the linker
 777     2) generate some executable, and link it using -r (I would
 778        probably use paranoia.o and link against newlib/libc.a, which
 779        for all the supported targets would be available in
 780        /usr/cygnus/progressive/H-host/target/lib/libc.a).
 781     3) make the change to reloc.c
 782     4) rebuild the linker
 783     5) repeat step 2
 784     6) if the resulting object files are the same, you have at least
 785        made it no worse
 786     7) if they are different you have to figure out which version is
 787        right
 788 */
 789               relocation -= reloc_entry->addend;
 790 #endif
 791               reloc_entry->addend = 0;
 792             }
 793           else
 794             {
 795               reloc_entry->addend = relocation;
 796             }
 797         }
 798     }
 799   else
 800     {
 801       reloc_entry->addend = 0;
 802     }
 803
 804   /* FIXME: This overflow checking is incomplete, because the value
 805      might have overflowed before we get here.  For a correct check we
 806      need to compute the value in a size larger than bitsize, but we
 807      can't reasonably do that for a reloc the same size as a host
 808      machine word.
 809      FIXME: We should also do overflow checking on the result after
 810      adding in the value contained in the object file.  */
 811   if (howto->complain_on_overflow != complain_overflow_dont
 812       && flag == bfd_reloc_ok)
 813     flag = bfd_check_overflow (howto->complain_on_overflow,
 814                                howto->bitsize,
 815                                howto->rightshift,
 816                                bfd_arch_bits_per_address (abfd),
 817                                relocation);
 818
 819   /* Either we are relocating all the way, or we don't want to apply
 820      the relocation to the reloc entry (probably because there isn't
 821      any room in the output format to describe addends to relocs).  */
 822
 823   /* The cast to bfd_vma avoids a bug in the Alpha OSF/1 C compiler
 824      (OSF version 1.3, compiler version 3.11).  It miscompiles the
 825      following program:
 826
 827      struct str
 828      {
 829        unsigned int i0;
 830      } s = { 0 };
 831
 832      int
 833      main ()
 834      {
 835        unsigned long x;
 836
 837        x = 0x100000000;
 838        x <<= (unsigned long) s.i0;
 839        if (x == 0)
 840          printf ("failed\n");
 841        else
 842          printf ("succeeded (%lx)\n", x);
 843      }
 844      */
 845
 846   relocation >>= (bfd_vma) howto->rightshift;
 847
 848   /* Shift everything up to where it's going to be used.  */
 849   relocation <<= (bfd_vma) howto->bitpos;
 850
 851   /* Wait for the day when all have the mask in them.  */
 852
 853   /* What we do:
 854      i instruction to be left alone
 855      o offset within instruction
 856      r relocation offset to apply
 857      S src mask
 858      D dst mask
 859      N ~dst mask
 860      A part 1
 861      B part 2
 862      R result
 863
 864      Do this:
 865      ((  i i i i i o o o o o  from bfd_get<size>
 866      and           S S S S S) to get the size offset we want
 867      +   r r r r r r r r r r) to get the final value to place
 868      and           D D D D D  to chop to right size
 869      -----------------------
 870      =             A A A A A
 871      And this:
 872      (   i i i i i o o o o o  from bfd_get<size>
 873      and N N N N N          ) get instruction
 874      -----------------------
 875      =   B B B B B
 876
 877      And then:
 878      (   B B B B B
 879      or            A A A A A)
 880      -----------------------
 881      =   R R R R R R R R R R  put into bfd_put<size>
 882      */
 883
 884 #define DOIT(x) \
 885   x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) +  relocation) & howto->dst_mask))
 886
 887   switch (howto->size)
 888     {
 889     case 0:
 890       {
 891         char x = bfd_get_8 (abfd, (char *) data + octets);
 892         DOIT (x);
 893         bfd_put_8 (abfd, x, (unsigned char *) data + octets);
 894       }
 895       break;
 896
 897     case 1:
 898       {
 899         short x = bfd_get_16 (abfd, (bfd_byte *) data + octets);
 900         DOIT (x);
 901         bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data + octets);
 902       }
 903       break;
 904     case 2:
 905       {
 906         long x = bfd_get_32 (abfd, (bfd_byte *) data + octets);
 907         DOIT (x);
 908         bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 909       }
 910       break;
 911     case -2:
 912       {
 913         long x = bfd_get_32 (abfd, (bfd_byte *) data + octets);
 914         relocation = -relocation;
 915         DOIT (x);
 916         bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 917       }
 918       break;
 919
 920     case -1:
 921       {
 922         long x = bfd_get_16 (abfd, (bfd_byte *) data + octets);
 923         relocation = -relocation;
 924         DOIT (x);
 925         bfd_put_16 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 926       }
 927       break;
 928
 929     case 3:
 930       /* Do nothing */
 931       break;
 932
 933     case 4:
 934 #ifdef BFD64
 935       {
 936         bfd_vma x = bfd_get_64 (abfd, (bfd_byte *) data + octets);
 937         DOIT (x);
 938         bfd_put_64 (abfd, x, (bfd_byte *) data + octets);
 939       }
 940 #else
 941       abort ();
 942 #endif
 943       break;
 944     default:
 945       return bfd_reloc_other;
 946     }
 947
 948   return flag;
 949 }
 950
 951 /*
 952 FUNCTION
 953         bfd_install_relocation
 954
 955 SYNOPSIS
 956         bfd_reloc_status_type bfd_install_relocation
 957           (bfd *abfd,
 958            arelent *reloc_entry,
 959            void *data, bfd_vma data_start,
 960            asection *input_section,
 961            char **error_message);
 962
 963 DESCRIPTION
 964         This looks remarkably like <<bfd_perform_relocation>>, except it
 965         does not expect that the section contents have been filled in.
 966         I.e., it's suitable for use when creating, rather than applying
 967         a relocation.
 968
 969         For now, this function should be considered reserved for the
 970         assembler.
 971 */
 972
 973 bfd_reloc_status_type
 974 bfd_install_relocation (bfd *abfd,
 975                         arelent *reloc_entry,
 976                         void *data_start,
 977                         bfd_vma data_start_offset,
 978                         asection *input_section,
 979                         char **error_message)
 980 {
 981   bfd_vma relocation;
 982   bfd_reloc_status_type flag = bfd_reloc_ok;
 983   bfd_size_type octets = reloc_entry->address * bfd_octets_per_byte (abfd);
 984   bfd_vma output_base = 0;
 985   reloc_howto_type *howto = reloc_entry->howto;
 986   asection *reloc_target_output_section;
 987   asymbol *symbol;
 988   bfd_byte *data;
 989
 990   symbol = *(reloc_entry->sym_ptr_ptr);
 991   if (bfd_is_abs_section (symbol->section))
 992     {
 993       reloc_entry->address += input_section->output_offset;
 994       return bfd_reloc_ok;
 995     }
 996
 997   /* If there is a function supplied to handle this relocation type,
 998      call it.  It'll return `bfd_reloc_continue' if further processing
 999      can be done.  */
1000   if (howto->special_function)
1001     {
1002       bfd_reloc_status_type cont;
1003
1004       /* XXX - The special_function calls haven't been fixed up to deal
1005          with creating new relocations and section contents.  */
1006       cont = howto->special_function (abfd, reloc_entry, symbol,
1007                                       /* XXX - Non-portable! */
1008                                       ((bfd_byte *) data_start
1009                                        - data_start_offset),
1010                                       input_section, abfd, error_message);
1011       if (cont != bfd_reloc_continue)
1012         return cont;
1013     }
1014
1015   /* Is the address of the relocation really within the section?  */
1016   if (reloc_entry->address > (input_section->_cooked_size
1017                               / bfd_octets_per_byte (abfd)))
1018     return bfd_reloc_outofrange;
1019
1020   /* Work out which section the relocation is targeted at and the
1021      initial relocation command value.  */
1022
1023   /* Get symbol value.  (Common symbols are special.)  */
1024   if (bfd_is_com_section (symbol->section))
1025     relocation = 0;
1026   else
1027     relocation = symbol->value;
1028
1029   reloc_target_output_section = symbol->section->output_section;
1030
1031   /* Convert input-section-relative symbol value to absolute.  */
1032   if (! howto->partial_inplace)
1033     output_base = 0;
1034   else
1035     output_base = reloc_target_output_section->vma;
1036
1037   relocation += output_base + symbol->section->output_offset;
1038
1039   /* Add in supplied addend.  */
1040   relocation += reloc_entry->addend;
1041
1042   /* Here the variable relocation holds the final address of the
1043      symbol we are relocating against, plus any addend.  */
1044
1045   if (howto->pc_relative)
1046     {
1047       /* This is a PC relative relocation.  We want to set RELOCATION
1048          to the distance between the address of the symbol and the
1049          location.  RELOCATION is already the address of the symbol.
1050
1051          We start by subtracting the address of the section containing
1052          the location.
1053
1054          If pcrel_offset is set, we must further subtract the position
1055          of the location within the section.  Some targets arrange for
1056          the addend to be the negative of the position of the location
1057          within the section; for example, i386-aout does this.  For
1058          i386-aout, pcrel_offset is FALSE.  Some other targets do not
1059          include the position of the location; for example, m88kbcs,
1060          or ELF.  For those targets, pcrel_offset is TRUE.
1061
1062          If we are producing relocatable output, then we must ensure
1063          that this reloc will be correctly computed when the final
1064          relocation is done.  If pcrel_offset is FALSE we want to wind
1065          up with the negative of the location within the section,
1066          which means we must adjust the existing addend by the change
1067          in the location within the section.  If pcrel_offset is TRUE
1068          we do not want to adjust the existing addend at all.
1069
1070          FIXME: This seems logical to me, but for the case of
1071          producing relocatable output it is not what the code
1072          actually does.  I don't want to change it, because it seems
1073          far too likely that something will break.  */
1074
1075       relocation -=
1076         input_section->output_section->vma + input_section->output_offset;
1077
1078       if (howto->pcrel_offset && howto->partial_inplace)
1079         relocation -= reloc_entry->address;
1080     }
1081
1082   if (! howto->partial_inplace)
1083     {
1084       /* This is a partial relocation, and we want to apply the relocation
1085          to the reloc entry rather than the raw data. Modify the reloc
1086          inplace to reflect what we now know.  */
1087       reloc_entry->addend = relocation;
1088       reloc_entry->address += input_section->output_offset;
1089       return flag;
1090     }
1091   else
1092     {
1093       /* This is a partial relocation, but inplace, so modify the
1094          reloc record a bit.
1095
1096          If we've relocated with a symbol with a section, change
1097          into a ref to the section belonging to the symbol.  */
1098       reloc_entry->address += input_section->output_offset;
1099
1100       /* WTF?? */
1101       if (abfd->xvec->flavour == bfd_target_coff_flavour
1102           && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
1103           && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
1104         {
1105 #if 1
1106 /* For m68k-coff, the addend was being subtracted twice during
1107    relocation with -r.  Removing the line below this comment
1108    fixes that problem; see PR 2953.
1109
1110 However, Ian wrote the following, regarding removing the line below,
1111 which explains why it is still enabled:  --djm
1112
1113 If you put a patch like that into BFD you need to check all the COFF
1114 linkers.  I am fairly certain that patch will break coff-i386 (e.g.,
1115 SCO); see coff_i386_reloc in coff-i386.c where I worked around the
1116 problem in a different way.  There may very well be a reason that the
1117 code works as it does.
1118
1119 Hmmm.  The first obvious point is that bfd_install_relocation should
1120 not have any tests that depend upon the flavour.  It's seem like
1121 entirely the wrong place for such a thing.  The second obvious point
1122 is that the current code ignores the reloc addend when producing
1123 relocatable output for COFF.  That's peculiar.  In fact, I really
1124 have no idea what the point of the line you want to remove is.
1125
1126 A typical COFF reloc subtracts the old value of the symbol and adds in
1127 the new value to the location in the object file (if it's a pc
1128 relative reloc it adds the difference between the symbol value and the
1129 location).  When relocating we need to preserve that property.
1130
1131 BFD handles this by setting the addend to the negative of the old
1132 value of the symbol.  Unfortunately it handles common symbols in a
1133 non-standard way (it doesn't subtract the old value) but that's a
1134 different story (we can't change it without losing backward
1135 compatibility with old object files) (coff-i386 does subtract the old
1136 value, to be compatible with existing coff-i386 targets, like SCO).
1137
1138 So everything works fine when not producing relocatable output.  When
1139 we are producing relocatable output, logically we should do exactly
1140 what we do when not producing relocatable output.  Therefore, your
1141 patch is correct.  In fact, it should probably always just set
1142 reloc_entry->addend to 0 for all cases, since it is, in fact, going to
1143 add the value into the object file.  This won't hurt the COFF code,
1144 which doesn't use the addend; I'm not sure what it will do to other
1145 formats (the thing to check for would be whether any formats both use
1146 the addend and set partial_inplace).
1147
1148 When I wanted to make coff-i386 produce relocatable output, I ran
1149 into the problem that you are running into: I wanted to remove that
1150 line.  Rather than risk it, I made the coff-i386 relocs use a special
1151 function; it's coff_i386_reloc in coff-i386.c.  The function
1152 specifically adds the addend field into the object file, knowing that
1153 bfd_install_relocation is not going to.  If you remove that line, then
1154 coff-i386.c will wind up adding the addend field in twice.  It's
1155 trivial to fix; it just needs to be done.
1156
1157 The problem with removing the line is just that it may break some
1158 working code.  With BFD it's hard to be sure of anything.  The right
1159 way to deal with this is simply to build and test at least all the
1160 supported COFF targets.  It should be straightforward if time and disk
1161 space consuming.  For each target:
1162     1) build the linker
1163     2) generate some executable, and link it using -r (I would
1164        probably use paranoia.o and link against newlib/libc.a, which
1165        for all the supported targets would be available in
1166        /usr/cygnus/progressive/H-host/target/lib/libc.a).
1167     3) make the change to reloc.c
1168     4) rebuild the linker
1169     5) repeat step 2
1170     6) if the resulting object files are the same, you have at least
1171        made it no worse
1172     7) if they are different you have to figure out which version is
1173        right.  */
1174           relocation -= reloc_entry->addend;
1175 #endif
1176           reloc_entry->addend = 0;
1177         }
1178       else
1179         {
1180           reloc_entry->addend = relocation;
1181         }
1182     }
1183
1184   /* FIXME: This overflow checking is incomplete, because the value
1185      might have overflowed before we get here.  For a correct check we
1186      need to compute the value in a size larger than bitsize, but we
1187      can't reasonably do that for a reloc the same size as a host
1188      machine word.
1189      FIXME: We should also do overflow checking on the result after
1190      adding in the value contained in the object file.  */
1191   if (howto->complain_on_overflow != complain_overflow_dont)
1192     flag = bfd_check_overflow (howto->complain_on_overflow,
1193                                howto->bitsize,
1194                                howto->rightshift,
1195                                bfd_arch_bits_per_address (abfd),
1196                                relocation);
1197
1198   /* Either we are relocating all the way, or we don't want to apply
1199      the relocation to the reloc entry (probably because there isn't
1200      any room in the output format to describe addends to relocs).  */
1201
1202   /* The cast to bfd_vma avoids a bug in the Alpha OSF/1 C compiler
1203      (OSF version 1.3, compiler version 3.11).  It miscompiles the
1204      following program:
1205
1206      struct str
1207      {
1208        unsigned int i0;
1209      } s = { 0 };
1210
1211      int
1212      main ()
1213      {
1214        unsigned long x;
1215
1216        x = 0x100000000;
1217        x <<= (unsigned long) s.i0;
1218        if (x == 0)
1219          printf ("failed\n");
1220        else
1221          printf ("succeeded (%lx)\n", x);
1222      }
1223      */
1224
1225   relocation >>= (bfd_vma) howto->rightshift;
1226
1227   /* Shift everything up to where it's going to be used.  */
1228   relocation <<= (bfd_vma) howto->bitpos;
1229
1230   /* Wait for the day when all have the mask in them.  */
1231
1232   /* What we do:
1233      i instruction to be left alone
1234      o offset within instruction
1235      r relocation offset to apply
1236      S src mask
1237      D dst mask
1238      N ~dst mask
1239      A part 1
1240      B part 2
1241      R result
1242
1243      Do this:
1244      ((  i i i i i o o o o o  from bfd_get<size>
1245      and           S S S S S) to get the size offset we want
1246      +   r r r r r r r r r r) to get the final value to place
1247      and           D D D D D  to chop to right size
1248      -----------------------
1249      =             A A A A A
1250      And this:
1251      (   i i i i i o o o o o  from bfd_get<size>
1252      and N N N N N          ) get instruction
1253      -----------------------
1254      =   B B B B B
1255
1256      And then:
1257      (   B B B B B
1258      or            A A A A A)
1259      -----------------------
1260      =   R R R R R R R R R R  put into bfd_put<size>
1261      */
1262
1263 #define DOIT(x) \
1264   x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) +  relocation) & howto->dst_mask))
1265
1266   data = (bfd_byte *) data_start + (octets - data_start_offset);
1267
1268   switch (howto->size)
1269     {
1270     case 0:
1271       {
1272         char x = bfd_get_8 (abfd, data);
1273         DOIT (x);
1274         bfd_put_8 (abfd, x, data);
1275       }
1276       break;
1277
1278     case 1:
1279       {
1280         short x = bfd_get_16 (abfd, data);
1281         DOIT (x);
1282         bfd_put_16 (abfd, (bfd_vma) x, data);
1283       }
1284       break;
1285     case 2:
1286       {
1287         long x = bfd_get_32 (abfd, data);
1288         DOIT (x);
1289         bfd_put_32 (abfd, (bfd_vma) x, data);
1290       }
1291       break;
1292     case -2:
1293       {
1294         long x = bfd_get_32 (abfd, data);
1295         relocation = -relocation;
1296         DOIT (x);
1297         bfd_put_32 (abfd, (bfd_vma) x, data);
1298       }
1299       break;
1300
1301     case 3:
1302       /* Do nothing */
1303       break;
1304
1305     case 4:
1306       {
1307         bfd_vma x = bfd_get_64 (abfd, data);
1308         DOIT (x);
1309         bfd_put_64 (abfd, x, data);
1310       }
1311       break;
1312     default:
1313       return bfd_reloc_other;
1314     }
1315
1316   return flag;
1317 }
1318
1319 /* This relocation routine is used by some of the backend linkers.
1320    They do not construct asymbol or arelent structures, so there is no
1321    reason for them to use bfd_perform_relocation.  Also,
1322    bfd_perform_relocation is so hacked up it is easier to write a new
1323    function than to try to deal with it.
1324
1325    This routine does a final relocation.  Whether it is useful for a
1326    relocatable link depends upon how the object format defines
1327    relocations.
1328
1329    FIXME: This routine ignores any special_function in the HOWTO,
1330    since the existing special_function values have been written for
1331    bfd_perform_relocation.
1332
1333    HOWTO is the reloc howto information.
1334    INPUT_BFD is the BFD which the reloc applies to.
1335    INPUT_SECTION is the section which the reloc applies to.
1336    CONTENTS is the contents of the section.
1337    ADDRESS is the address of the reloc within INPUT_SECTION.
1338    VALUE is the value of the symbol the reloc refers to.
1339    ADDEND is the addend of the reloc.  */
1340
1341 bfd_reloc_status_type
1342 _bfd_final_link_relocate (reloc_howto_type *howto,
1343                           bfd *input_bfd,
1344                           asection *input_section,
1345                           bfd_byte *contents,
1346                           bfd_vma address,
1347                           bfd_vma value,
1348                           bfd_vma addend)
1349 {
1350   bfd_vma relocation;
1351
1352   /* Sanity check the address.  */
1353   if (address > input_section->_raw_size)
1354     return bfd_reloc_outofrange;
1355
1356   /* This function assumes that we are dealing with a basic relocation
1357      against a symbol.  We want to compute the value of the symbol to
1358      relocate to.  This is just VALUE, the value of the symbol, plus
1359      ADDEND, any addend associated with the reloc.  */
1360   relocation = value + addend;
1361
1362   /* If the relocation is PC relative, we want to set RELOCATION to
1363      the distance between the symbol (currently in RELOCATION) and the
1364      location we are relocating.  Some targets (e.g., i386-aout)
1365      arrange for the contents of the section to be the negative of the
1366      offset of the location within the section; for such targets
1367      pcrel_offset is FALSE.  Other targets (e.g., m88kbcs or ELF)
1368      simply leave the contents of the section as zero; for such
1369      targets pcrel_offset is TRUE.  If pcrel_offset is FALSE we do not
1370      need to subtract out the offset of the location within the
1371      section (which is just ADDRESS).  */
1372   if (howto->pc_relative)
1373     {
1374       relocation -= (input_section->output_section->vma
1375                      + input_section->output_offset);
1376       if (howto->pcrel_offset)
1377         relocation -= address;
1378     }
1379
1380   return _bfd_relocate_contents (howto, input_bfd, relocation,
1381                                  contents + address);
1382 }
1383
1384 /* Relocate a given location using a given value and howto.  */
1385
1386 bfd_reloc_status_type
1387 _bfd_relocate_contents (reloc_howto_type *howto,
1388                         bfd *input_bfd,
1389                         bfd_vma relocation,
1390                         bfd_byte *location)
1391 {
1392   int size;
1393   bfd_vma x = 0;
1394   bfd_reloc_status_type flag;
1395   unsigned int rightshift = howto->rightshift;
1396   unsigned int bitpos = howto->bitpos;
1397
1398   /* If the size is negative, negate RELOCATION.  This isn't very
1399      general.  */
1400   if (howto->size < 0)
1401     relocation = -relocation;
1402
1403   /* Get the value we are going to relocate.  */
1404   size = bfd_get_reloc_size (howto);
1405   switch (size)
1406     {
1407     default:
1408     case 0:
1409       abort ();
1410     case 1:
1411       x = bfd_get_8 (input_bfd, location);
1412       break;
1413     case 2:
1414       x = bfd_get_16 (input_bfd, location);
1415       break;
1416     case 4:
1417       x = bfd_get_32 (input_bfd, location);
1418       break;
1419     case 8:
1420 #ifdef BFD64
1421       x = bfd_get_64 (input_bfd, location);
1422 #else
1423       abort ();
1424 #endif
1425       break;
1426     }
1427
1428   /* Check for overflow.  FIXME: We may drop bits during the addition
1429      which we don't check for.  We must either check at every single
1430      operation, which would be tedious, or we must do the computations
1431      in a type larger than bfd_vma, which would be inefficient.  */
1432   flag = bfd_reloc_ok;
1433   if (howto->complain_on_overflow != complain_overflow_dont)
1434     {
1435       bfd_vma addrmask, fieldmask, signmask, ss;
1436       bfd_vma a, b, sum;
1437
1438       /* Get the values to be added together.  For signed and unsigned
1439          relocations, we assume that all values should be truncated to
1440          the size of an address.  For bitfields, all the bits matter.
1441          See also bfd_check_overflow.  */
1442       fieldmask = N_ONES (howto->bitsize);
1443       addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask;
1444       a = relocation;
1445       b = x & howto->src_mask;
1446
1447       switch (howto->complain_on_overflow)
1448         {
1449         case complain_overflow_signed:
1450           a = (a & addrmask) >> rightshift;
1451
1452           /* If any sign bits are set, all sign bits must be set.
1453              That is, A must be a valid negative address after
1454              shifting.  */
1455           signmask = ~ (fieldmask >> 1);
1456           ss = a & signmask;
1457           if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
1458             flag = bfd_reloc_overflow;
1459
1460           /* We only need this next bit of code if the sign bit of B
1461              is below the sign bit of A.  This would only happen if
1462              SRC_MASK had fewer bits than BITSIZE.  Note that if
1463              SRC_MASK has more bits than BITSIZE, we can get into
1464              trouble; we would need to verify that B is in range, as
1465              we do for A above.  */
1466           signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1467
1468           /* Set all the bits above the sign bit.  */
1469           b = (b ^ signmask) - signmask;
1470
1471           b = (b & addrmask) >> bitpos;
1472
1473           /* Now we can do the addition.  */
1474           sum = a + b;
1475
1476           /* See if the result has the correct sign.  Bits above the
1477              sign bit are junk now; ignore them.  If the sum is
1478              positive, make sure we did not have all negative inputs;
1479              if the sum is negative, make sure we did not have all
1480              positive inputs.  The test below looks only at the sign
1481              bits, and it really just
1482                  SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
1483              */
1484           signmask = (fieldmask >> 1) + 1;
1485           if (((~ (a ^ b)) & (a ^ sum)) & signmask)
1486             flag = bfd_reloc_overflow;
1487
1488           break;
1489
1490         case complain_overflow_unsigned:
1491           /* Checking for an unsigned overflow is relatively easy:
1492              trim the addresses and add, and trim the result as well.
1493              Overflow is normally indicated when the result does not
1494              fit in the field.  However, we also need to consider the
1495              case when, e.g., fieldmask is 0x7fffffff or smaller, an
1496              input is 0x80000000, and bfd_vma is only 32 bits; then we
1497              will get sum == 0, but there is an overflow, since the
1498              inputs did not fit in the field.  Instead of doing a
1499              separate test, we can check for this by or-ing in the
1500              operands when testing for the sum overflowing its final
1501              field.  */
1502           a = (a & addrmask) >> rightshift;
1503           b = (b & addrmask) >> bitpos;
1504           sum = (a + b) & addrmask;
1505           if ((a | b | sum) & ~ fieldmask)
1506             flag = bfd_reloc_overflow;
1507
1508           break;
1509
1510         case complain_overflow_bitfield:
1511           /* Much like the signed check, but for a field one bit
1512              wider, and no trimming inputs with addrmask.  We allow a
1513              bitfield to represent numbers in the range -2**n to
1514              2**n-1, where n is the number of bits in the field.
1515              Note that when bfd_vma is 32 bits, a 32-bit reloc can't
1516              overflow, which is exactly what we want.  */
1517           a >>= rightshift;
1518
1519           signmask = ~ fieldmask;
1520           ss = a & signmask;
1521           if (ss != 0 && ss != (((bfd_vma) -1 >> rightshift) & signmask))
1522             flag = bfd_reloc_overflow;
1523
1524           signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1525           b = (b ^ signmask) - signmask;
1526
1527           b >>= bitpos;
1528
1529           sum = a + b;
1530
1531           /* We mask with addrmask here to explicitly allow an address
1532              wrap-around.  The Linux kernel relies on it, and it is
1533              the only way to write assembler code which can run when
1534              loaded at a location 0x80000000 away from the location at
1535              which it is linked.  */
1536           signmask = fieldmask + 1;
1537           if (((~ (a ^ b)) & (a ^ sum)) & signmask & addrmask)
1538             flag = bfd_reloc_overflow;
1539
1540           break;
1541
1542         default:
1543           abort ();
1544         }
1545     }
1546
1547   /* Put RELOCATION in the right bits.  */
1548   relocation >>= (bfd_vma) rightshift;
1549   relocation <<= (bfd_vma) bitpos;
1550
1551   /* Add RELOCATION to the right bits of X.  */
1552   x = ((x & ~howto->dst_mask)
1553        | (((x & howto->src_mask) + relocation) & howto->dst_mask));
1554
1555   /* Put the relocated value back in the object file.  */
1556   switch (size)
1557     {
1558     default:
1559     case 0:
1560       abort ();
1561     case 1:
1562       bfd_put_8 (input_bfd, x, location);
1563       break;
1564     case 2:
1565       bfd_put_16 (input_bfd, x, location);
1566       break;
1567     case 4:
1568       bfd_put_32 (input_bfd, x, location);
1569       break;
1570     case 8:
1571 #ifdef BFD64
1572       bfd_put_64 (input_bfd, x, location);
1573 #else
1574       abort ();
1575 #endif
1576       break;
1577     }
1578
1579   return flag;
1580 }
1581
1582 /*
1583 DOCDD
1584 INODE
1585         howto manager,  , typedef arelent, Relocations
1586
1587 SECTION
1588         The howto manager
1589
1590         When an application wants to create a relocation, but doesn't
1591         know what the target machine might call it, it can find out by
1592         using this bit of code.
1593
1594 */
1595
1596 /*
1597 TYPEDEF
1598         bfd_reloc_code_type
1599
1600 DESCRIPTION
1601         The insides of a reloc code.  The idea is that, eventually, there
1602         will be one enumerator for every type of relocation we ever do.
1603         Pass one of these values to <<bfd_reloc_type_lookup>>, and it'll
1604         return a howto pointer.
1605
1606         This does mean that the application must determine the correct
1607         enumerator value; you can't get a howto pointer from a random set
1608         of attributes.
1609
1610 SENUM
1611    bfd_reloc_code_real
1612
1613 ENUM
1614   BFD_RELOC_64
1615 ENUMX
1616   BFD_RELOC_32
1617 ENUMX
1618   BFD_RELOC_26
1619 ENUMX
1620   BFD_RELOC_24
1621 ENUMX
1622   BFD_RELOC_16
1623 ENUMX
1624   BFD_RELOC_14
1625 ENUMX
1626   BFD_RELOC_8
1627 ENUMDOC
1628   Basic absolute relocations of N bits.
1629
1630 ENUM
1631   BFD_RELOC_64_PCREL
1632 ENUMX
1633   BFD_RELOC_32_PCREL
1634 ENUMX
1635   BFD_RELOC_24_PCREL
1636 ENUMX
1637   BFD_RELOC_16_PCREL
1638 ENUMX
1639   BFD_RELOC_12_PCREL
1640 ENUMX
1641   BFD_RELOC_8_PCREL
1642 ENUMDOC
1643   PC-relative relocations.  Sometimes these are relative to the address
1644 of the relocation itself; sometimes they are relative to the start of
1645 the section containing the relocation.  It depends on the specific target.
1646
1647 The 24-bit relocation is used in some Intel 960 configurations.
1648
1649 ENUM
1650   BFD_RELOC_32_SECREL
1651 ENUMDOC
1652   Section relative relocations.  Some targets need this for DWARF2.
1653
1654 ENUM
1655   BFD_RELOC_32_GOT_PCREL
1656 ENUMX
1657   BFD_RELOC_16_GOT_PCREL
1658 ENUMX
1659   BFD_RELOC_8_GOT_PCREL
1660 ENUMX
1661   BFD_RELOC_32_GOTOFF
1662 ENUMX
1663   BFD_RELOC_16_GOTOFF
1664 ENUMX
1665   BFD_RELOC_LO16_GOTOFF
1666 ENUMX
1667   BFD_RELOC_HI16_GOTOFF
1668 ENUMX
1669   BFD_RELOC_HI16_S_GOTOFF
1670 ENUMX
1671   BFD_RELOC_8_GOTOFF
1672 ENUMX
1673   BFD_RELOC_64_PLT_PCREL
1674 ENUMX
1675   BFD_RELOC_32_PLT_PCREL
1676 ENUMX
1677   BFD_RELOC_24_PLT_PCREL
1678 ENUMX
1679   BFD_RELOC_16_PLT_PCREL
1680 ENUMX
1681   BFD_RELOC_8_PLT_PCREL
1682 ENUMX
1683   BFD_RELOC_64_PLTOFF
1684 ENUMX
1685   BFD_RELOC_32_PLTOFF
1686 ENUMX
1687   BFD_RELOC_16_PLTOFF
1688 ENUMX
1689   BFD_RELOC_LO16_PLTOFF
1690 ENUMX
1691   BFD_RELOC_HI16_PLTOFF
1692 ENUMX
1693   BFD_RELOC_HI16_S_PLTOFF
1694 ENUMX
1695   BFD_RELOC_8_PLTOFF
1696 ENUMDOC
1697   For ELF.
1698
1699 ENUM
1700   BFD_RELOC_68K_GLOB_DAT
1701 ENUMX
1702   BFD_RELOC_68K_JMP_SLOT
1703 ENUMX
1704   BFD_RELOC_68K_RELATIVE
1705 ENUMDOC
1706   Relocations used by 68K ELF.
1707
1708 ENUM
1709   BFD_RELOC_32_BASEREL
1710 ENUMX
1711   BFD_RELOC_16_BASEREL
1712 ENUMX
1713   BFD_RELOC_LO16_BASEREL
1714 ENUMX
1715   BFD_RELOC_HI16_BASEREL
1716 ENUMX
1717   BFD_RELOC_HI16_S_BASEREL
1718 ENUMX
1719   BFD_RELOC_8_BASEREL
1720 ENUMX
1721   BFD_RELOC_RVA
1722 ENUMDOC
1723   Linkage-table relative.
1724
1725 ENUM
1726   BFD_RELOC_8_FFnn
1727 ENUMDOC
1728   Absolute 8-bit relocation, but used to form an address like 0xFFnn.
1729
1730 ENUM
1731   BFD_RELOC_32_PCREL_S2
1732 ENUMX
1733   BFD_RELOC_16_PCREL_S2
1734 ENUMX
1735   BFD_RELOC_23_PCREL_S2
1736 ENUMDOC
1737   These PC-relative relocations are stored as word displacements --
1738 i.e., byte displacements shifted right two bits.  The 30-bit word
1739 displacement (<<32_PCREL_S2>> -- 32 bits, shifted 2) is used on the
1740 SPARC.  (SPARC tools generally refer to this as <<WDISP30>>.)  The
1741 signed 16-bit displacement is used on the MIPS, and the 23-bit
1742 displacement is used on the Alpha.
1743
1744 ENUM
1745   BFD_RELOC_HI22
1746 ENUMX
1747   BFD_RELOC_LO10
1748 ENUMDOC
1749   High 22 bits and low 10 bits of 32-bit value, placed into lower bits of
1750 the target word.  These are used on the SPARC.
1751
1752 ENUM
1753   BFD_RELOC_GPREL16
1754 ENUMX
1755   BFD_RELOC_GPREL32
1756 ENUMDOC
1757   For systems that allocate a Global Pointer register, these are
1758 displacements off that register.  These relocation types are
1759 handled specially, because the value the register will have is
1760 decided relatively late.
1761
1762 ENUM
1763   BFD_RELOC_I960_CALLJ
1764 ENUMDOC
1765   Reloc types used for i960/b.out.
1766
1767 ENUM
1768   BFD_RELOC_NONE
1769 ENUMX
1770   BFD_RELOC_SPARC_WDISP22
1771 ENUMX
1772   BFD_RELOC_SPARC22
1773 ENUMX
1774   BFD_RELOC_SPARC13
1775 ENUMX
1776   BFD_RELOC_SPARC_GOT10
1777 ENUMX
1778   BFD_RELOC_SPARC_GOT13
1779 ENUMX
1780   BFD_RELOC_SPARC_GOT22
1781 ENUMX
1782   BFD_RELOC_SPARC_PC10
1783 ENUMX
1784   BFD_RELOC_SPARC_PC22
1785 ENUMX
1786   BFD_RELOC_SPARC_WPLT30
1787 ENUMX
1788   BFD_RELOC_SPARC_COPY
1789 ENUMX
1790   BFD_RELOC_SPARC_GLOB_DAT
1791 ENUMX
1792   BFD_RELOC_SPARC_JMP_SLOT
1793 ENUMX
1794   BFD_RELOC_SPARC_RELATIVE
1795 ENUMX
1796   BFD_RELOC_SPARC_UA16
1797 ENUMX
1798   BFD_RELOC_SPARC_UA32
1799 ENUMX
1800   BFD_RELOC_SPARC_UA64
1801 ENUMDOC
1802   SPARC ELF relocations.  There is probably some overlap with other
1803   relocation types already defined.
1804
1805 ENUM
1806   BFD_RELOC_SPARC_BASE13
1807 ENUMX
1808   BFD_RELOC_SPARC_BASE22
1809 ENUMDOC
1810   I think these are specific to SPARC a.out (e.g., Sun 4).
1811
1812 ENUMEQ
1813   BFD_RELOC_SPARC_64
1814   BFD_RELOC_64
1815 ENUMX
1816   BFD_RELOC_SPARC_10
1817 ENUMX
1818   BFD_RELOC_SPARC_11
1819 ENUMX
1820   BFD_RELOC_SPARC_OLO10
1821 ENUMX
1822   BFD_RELOC_SPARC_HH22
1823 ENUMX
1824   BFD_RELOC_SPARC_HM10
1825 ENUMX
1826   BFD_RELOC_SPARC_LM22
1827 ENUMX
1828   BFD_RELOC_SPARC_PC_HH22
1829 ENUMX
1830   BFD_RELOC_SPARC_PC_HM10
1831 ENUMX
1832   BFD_RELOC_SPARC_PC_LM22
1833 ENUMX
1834   BFD_RELOC_SPARC_WDISP16
1835 ENUMX
1836   BFD_RELOC_SPARC_WDISP19
1837 ENUMX
1838   BFD_RELOC_SPARC_7
1839 ENUMX
1840   BFD_RELOC_SPARC_6
1841 ENUMX
1842   BFD_RELOC_SPARC_5
1843 ENUMEQX
1844   BFD_RELOC_SPARC_DISP64
1845   BFD_RELOC_64_PCREL
1846 ENUMX
1847   BFD_RELOC_SPARC_PLT32
1848 ENUMX
1849   BFD_RELOC_SPARC_PLT64
1850 ENUMX
1851   BFD_RELOC_SPARC_HIX22
1852 ENUMX
1853   BFD_RELOC_SPARC_LOX10
1854 ENUMX
1855   BFD_RELOC_SPARC_H44
1856 ENUMX
1857   BFD_RELOC_SPARC_M44
1858 ENUMX
1859   BFD_RELOC_SPARC_L44
1860 ENUMX
1861   BFD_RELOC_SPARC_REGISTER
1862 ENUMDOC
1863   SPARC64 relocations
1864
1865 ENUM
1866   BFD_RELOC_SPARC_REV32
1867 ENUMDOC
1868   SPARC little endian relocation
1869 ENUM
1870   BFD_RELOC_SPARC_TLS_GD_HI22
1871 ENUMX
1872   BFD_RELOC_SPARC_TLS_GD_LO10
1873 ENUMX
1874   BFD_RELOC_SPARC_TLS_GD_ADD
1875 ENUMX
1876   BFD_RELOC_SPARC_TLS_GD_CALL
1877 ENUMX
1878   BFD_RELOC_SPARC_TLS_LDM_HI22
1879 ENUMX
1880   BFD_RELOC_SPARC_TLS_LDM_LO10
1881 ENUMX
1882   BFD_RELOC_SPARC_TLS_LDM_ADD
1883 ENUMX
1884   BFD_RELOC_SPARC_TLS_LDM_CALL
1885 ENUMX
1886   BFD_RELOC_SPARC_TLS_LDO_HIX22
1887 ENUMX
1888   BFD_RELOC_SPARC_TLS_LDO_LOX10
1889 ENUMX
1890   BFD_RELOC_SPARC_TLS_LDO_ADD
1891 ENUMX
1892   BFD_RELOC_SPARC_TLS_IE_HI22
1893 ENUMX
1894   BFD_RELOC_SPARC_TLS_IE_LO10
1895 ENUMX
1896   BFD_RELOC_SPARC_TLS_IE_LD
1897 ENUMX
1898   BFD_RELOC_SPARC_TLS_IE_LDX
1899 ENUMX
1900   BFD_RELOC_SPARC_TLS_IE_ADD
1901 ENUMX
1902   BFD_RELOC_SPARC_TLS_LE_HIX22
1903 ENUMX
1904   BFD_RELOC_SPARC_TLS_LE_LOX10
1905 ENUMX
1906   BFD_RELOC_SPARC_TLS_DTPMOD32
1907 ENUMX
1908   BFD_RELOC_SPARC_TLS_DTPMOD64
1909 ENUMX
1910   BFD_RELOC_SPARC_TLS_DTPOFF32
1911 ENUMX
1912   BFD_RELOC_SPARC_TLS_DTPOFF64
1913 ENUMX
1914   BFD_RELOC_SPARC_TLS_TPOFF32
1915 ENUMX
1916   BFD_RELOC_SPARC_TLS_TPOFF64
1917 ENUMDOC
1918   SPARC TLS relocations
1919
1920 ENUM
1921   BFD_RELOC_ALPHA_GPDISP_HI16
1922 ENUMDOC
1923   Alpha ECOFF and ELF relocations.  Some of these treat the symbol or
1924      "addend" in some special way.
1925   For GPDISP_HI16 ("gpdisp") relocations, the symbol is ignored when
1926      writing; when reading, it will be the absolute section symbol.  The
1927      addend is the displacement in bytes of the "lda" instruction from
1928      the "ldah" instruction (which is at the address of this reloc).
1929 ENUM
1930   BFD_RELOC_ALPHA_GPDISP_LO16
1931 ENUMDOC
1932   For GPDISP_LO16 ("ignore") relocations, the symbol is handled as
1933      with GPDISP_HI16 relocs.  The addend is ignored when writing the
1934      relocations out, and is filled in with the file's GP value on
1935      reading, for convenience.
1936
1937 ENUM
1938   BFD_RELOC_ALPHA_GPDISP
1939 ENUMDOC
1940   The ELF GPDISP relocation is exactly the same as the GPDISP_HI16
1941      relocation except that there is no accompanying GPDISP_LO16
1942      relocation.
1943
1944 ENUM
1945   BFD_RELOC_ALPHA_LITERAL
1946 ENUMX
1947   BFD_RELOC_ALPHA_ELF_LITERAL
1948 ENUMX
1949   BFD_RELOC_ALPHA_LITUSE
1950 ENUMDOC
1951   The Alpha LITERAL/LITUSE relocs are produced by a symbol reference;
1952      the assembler turns it into a LDQ instruction to load the address of
1953      the symbol, and then fills in a register in the real instruction.
1954
1955      The LITERAL reloc, at the LDQ instruction, refers to the .lita
1956      section symbol.  The addend is ignored when writing, but is filled
1957      in with the file's GP value on reading, for convenience, as with the
1958      GPDISP_LO16 reloc.
1959
1960      The ELF_LITERAL reloc is somewhere between 16_GOTOFF and GPDISP_LO16.
1961      It should refer to the symbol to be referenced, as with 16_GOTOFF,
1962      but it generates output not based on the position within the .got
1963      section, but relative to the GP value chosen for the file during the
1964      final link stage.
1965
1966      The LITUSE reloc, on the instruction using the loaded address, gives
1967      information to the linker that it might be able to use to optimize
1968      away some literal section references.  The symbol is ignored (read
1969      as the absolute section symbol), and the "addend" indicates the type
1970      of instruction using the register:
1971               1 - "memory" fmt insn
1972               2 - byte-manipulation (byte offset reg)
1973               3 - jsr (target of branch)
1974
1975 ENUM
1976   BFD_RELOC_ALPHA_HINT
1977 ENUMDOC
1978   The HINT relocation indicates a value that should be filled into the
1979      "hint" field of a jmp/jsr/ret instruction, for possible branch-
1980      prediction logic which may be provided on some processors.
1981
1982 ENUM
1983   BFD_RELOC_ALPHA_LINKAGE
1984 ENUMDOC
1985   The LINKAGE relocation outputs a linkage pair in the object file,
1986      which is filled by the linker.
1987
1988 ENUM
1989   BFD_RELOC_ALPHA_CODEADDR
1990 ENUMDOC
1991   The CODEADDR relocation outputs a STO_CA in the object file,
1992      which is filled by the linker.
1993
1994 ENUM
1995   BFD_RELOC_ALPHA_GPREL_HI16
1996 ENUMX
1997   BFD_RELOC_ALPHA_GPREL_LO16
1998 ENUMDOC
1999   The GPREL_HI/LO relocations together form a 32-bit offset from the
2000      GP register.
2001
2002 ENUM
2003   BFD_RELOC_ALPHA_BRSGP
2004 ENUMDOC
2005   Like BFD_RELOC_23_PCREL_S2, except that the source and target must
2006   share a common GP, and the target address is adjusted for
2007   STO_ALPHA_STD_GPLOAD.
2008
2009 ENUM
2010   BFD_RELOC_ALPHA_TLSGD
2011 ENUMX
2012   BFD_RELOC_ALPHA_TLSLDM
2013 ENUMX
2014   BFD_RELOC_ALPHA_DTPMOD64
2015 ENUMX
2016   BFD_RELOC_ALPHA_GOTDTPREL16
2017 ENUMX
2018   BFD_RELOC_ALPHA_DTPREL64
2019 ENUMX
2020   BFD_RELOC_ALPHA_DTPREL_HI16
2021 ENUMX
2022   BFD_RELOC_ALPHA_DTPREL_LO16
2023 ENUMX
2024   BFD_RELOC_ALPHA_DTPREL16
2025 ENUMX
2026   BFD_RELOC_ALPHA_GOTTPREL16
2027 ENUMX
2028   BFD_RELOC_ALPHA_TPREL64
2029 ENUMX
2030   BFD_RELOC_ALPHA_TPREL_HI16
2031 ENUMX
2032   BFD_RELOC_ALPHA_TPREL_LO16
2033 ENUMX
2034   BFD_RELOC_ALPHA_TPREL16
2035 ENUMDOC
2036   Alpha thread-local storage relocations.
2037
2038 ENUM
2039   BFD_RELOC_MIPS_JMP
2040 ENUMDOC
2041   Bits 27..2 of the relocation address shifted right 2 bits;
2042      simple reloc otherwise.
2043
2044 ENUM
2045   BFD_RELOC_MIPS16_JMP
2046 ENUMDOC
2047   The MIPS16 jump instruction.
2048
2049 ENUM
2050   BFD_RELOC_MIPS16_GPREL
2051 ENUMDOC
2052   MIPS16 GP relative reloc.
2053
2054 ENUM
2055   BFD_RELOC_HI16
2056 ENUMDOC
2057   High 16 bits of 32-bit value; simple reloc.
2058 ENUM
2059   BFD_RELOC_HI16_S
2060 ENUMDOC
2061   High 16 bits of 32-bit value but the low 16 bits will be sign
2062      extended and added to form the final result.  If the low 16
2063      bits form a negative number, we need to add one to the high value
2064      to compensate for the borrow when the low bits are added.
2065 ENUM
2066   BFD_RELOC_LO16
2067 ENUMDOC
2068   Low 16 bits.
2069 ENUM
2070   BFD_RELOC_PCREL_HI16_S
2071 ENUMDOC
2072   Like BFD_RELOC_HI16_S, but PC relative.
2073 ENUM
2074   BFD_RELOC_PCREL_LO16
2075 ENUMDOC
2076   Like BFD_RELOC_LO16, but PC relative.
2077
2078 ENUM
2079   BFD_RELOC_MIPS_LITERAL
2080 ENUMDOC
2081   Relocation against a MIPS literal section.
2082
2083 ENUM
2084   BFD_RELOC_MIPS_GOT16
2085 ENUMX
2086   BFD_RELOC_MIPS_CALL16
2087 ENUMX
2088   BFD_RELOC_MIPS_GOT_HI16
2089 ENUMX
2090   BFD_RELOC_MIPS_GOT_LO16
2091 ENUMX
2092   BFD_RELOC_MIPS_CALL_HI16
2093 ENUMX
2094   BFD_RELOC_MIPS_CALL_LO16
2095 ENUMX
2096   BFD_RELOC_MIPS_SUB
2097 ENUMX
2098   BFD_RELOC_MIPS_GOT_PAGE
2099 ENUMX
2100   BFD_RELOC_MIPS_GOT_OFST
2101 ENUMX
2102   BFD_RELOC_MIPS_GOT_DISP
2103 ENUMX
2104   BFD_RELOC_MIPS_SHIFT5
2105 ENUMX
2106   BFD_RELOC_MIPS_SHIFT6
2107 ENUMX
2108   BFD_RELOC_MIPS_INSERT_A
2109 ENUMX
2110   BFD_RELOC_MIPS_INSERT_B
2111 ENUMX
2112   BFD_RELOC_MIPS_DELETE
2113 ENUMX
2114   BFD_RELOC_MIPS_HIGHEST
2115 ENUMX
2116   BFD_RELOC_MIPS_HIGHER
2117 ENUMX
2118   BFD_RELOC_MIPS_SCN_DISP
2119 ENUMX
2120   BFD_RELOC_MIPS_REL16
2121 ENUMX
2122   BFD_RELOC_MIPS_RELGOT
2123 ENUMX
2124   BFD_RELOC_MIPS_JALR
2125 ENUMDOC
2126   MIPS ELF relocations.
2127 COMMENT
2128
2129 ENUM
2130   BFD_RELOC_FRV_LABEL16
2131 ENUMX
2132   BFD_RELOC_FRV_LABEL24
2133 ENUMX
2134   BFD_RELOC_FRV_LO16
2135 ENUMX
2136   BFD_RELOC_FRV_HI16
2137 ENUMX
2138   BFD_RELOC_FRV_GPREL12
2139 ENUMX
2140   BFD_RELOC_FRV_GPRELU12
2141 ENUMX
2142   BFD_RELOC_FRV_GPREL32
2143 ENUMX
2144   BFD_RELOC_FRV_GPRELHI
2145 ENUMX
2146   BFD_RELOC_FRV_GPRELLO
2147 ENUMX
2148   BFD_RELOC_FRV_GOT12
2149 ENUMX
2150   BFD_RELOC_FRV_GOTHI
2151 ENUMX
2152   BFD_RELOC_FRV_GOTLO
2153 ENUMX
2154   BFD_RELOC_FRV_FUNCDESC
2155 ENUMX
2156   BFD_RELOC_FRV_FUNCDESC_GOT12
2157 ENUMX
2158   BFD_RELOC_FRV_FUNCDESC_GOTHI
2159 ENUMX
2160   BFD_RELOC_FRV_FUNCDESC_GOTLO
2161 ENUMX
2162   BFD_RELOC_FRV_FUNCDESC_VALUE
2163 ENUMX
2164   BFD_RELOC_FRV_FUNCDESC_GOTOFF12
2165 ENUMX
2166   BFD_RELOC_FRV_FUNCDESC_GOTOFFHI
2167 ENUMX
2168   BFD_RELOC_FRV_FUNCDESC_GOTOFFLO
2169 ENUMX
2170   BFD_RELOC_FRV_GOTOFF12
2171 ENUMX
2172   BFD_RELOC_FRV_GOTOFFHI
2173 ENUMX
2174   BFD_RELOC_FRV_GOTOFFLO
2175 ENUMDOC
2176   Fujitsu Frv Relocations.
2177 COMMENT
2178
2179 ENUM
2180   BFD_RELOC_MN10300_GOTOFF24
2181 ENUMDOC
2182   This is a 24bit GOT-relative reloc for the mn10300.
2183 ENUM
2184   BFD_RELOC_MN10300_GOT32
2185 ENUMDOC
2186   This is a 32bit GOT-relative reloc for the mn10300, offset by two bytes
2187   in the instruction.
2188 ENUM
2189   BFD_RELOC_MN10300_GOT24
2190 ENUMDOC
2191   This is a 24bit GOT-relative reloc for the mn10300, offset by two bytes
2192   in the instruction.
2193 ENUM
2194   BFD_RELOC_MN10300_GOT16
2195 ENUMDOC
2196   This is a 16bit GOT-relative reloc for the mn10300, offset by two bytes
2197   in the instruction.
2198 ENUM
2199   BFD_RELOC_MN10300_COPY
2200 ENUMDOC
2201   Copy symbol at runtime.
2202 ENUM
2203   BFD_RELOC_MN10300_GLOB_DAT
2204 ENUMDOC
2205   Create GOT entry.
2206 ENUM
2207   BFD_RELOC_MN10300_JMP_SLOT
2208 ENUMDOC
2209   Create PLT entry.
2210 ENUM
2211   BFD_RELOC_MN10300_RELATIVE
2212 ENUMDOC
2213   Adjust by program base.
2214 COMMENT
2215
2216 ENUM
2217   BFD_RELOC_386_GOT32
2218 ENUMX
2219   BFD_RELOC_386_PLT32
2220 ENUMX
2221   BFD_RELOC_386_COPY
2222 ENUMX
2223   BFD_RELOC_386_GLOB_DAT
2224 ENUMX
2225   BFD_RELOC_386_JUMP_SLOT
2226 ENUMX
2227   BFD_RELOC_386_RELATIVE
2228 ENUMX
2229   BFD_RELOC_386_GOTOFF
2230 ENUMX
2231   BFD_RELOC_386_GOTPC
2232 ENUMX
2233   BFD_RELOC_386_TLS_TPOFF
2234 ENUMX
2235   BFD_RELOC_386_TLS_IE
2236 ENUMX
2237   BFD_RELOC_386_TLS_GOTIE
2238 ENUMX
2239   BFD_RELOC_386_TLS_LE
2240 ENUMX
2241   BFD_RELOC_386_TLS_GD
2242 ENUMX
2243   BFD_RELOC_386_TLS_LDM
2244 ENUMX
2245   BFD_RELOC_386_TLS_LDO_32
2246 ENUMX
2247   BFD_RELOC_386_TLS_IE_32
2248 ENUMX
2249   BFD_RELOC_386_TLS_LE_32
2250 ENUMX
2251   BFD_RELOC_386_TLS_DTPMOD32
2252 ENUMX
2253   BFD_RELOC_386_TLS_DTPOFF32
2254 ENUMX
2255   BFD_RELOC_386_TLS_TPOFF32
2256 ENUMDOC
2257   i386/elf relocations
2258
2259 ENUM
2260   BFD_RELOC_X86_64_GOT32
2261 ENUMX
2262   BFD_RELOC_X86_64_PLT32
2263 ENUMX
2264   BFD_RELOC_X86_64_COPY
2265 ENUMX
2266   BFD_RELOC_X86_64_GLOB_DAT
2267 ENUMX
2268   BFD_RELOC_X86_64_JUMP_SLOT
2269 ENUMX
2270   BFD_RELOC_X86_64_RELATIVE
2271 ENUMX
2272   BFD_RELOC_X86_64_GOTPCREL
2273 ENUMX
2274   BFD_RELOC_X86_64_32S
2275 ENUMX
2276   BFD_RELOC_X86_64_DTPMOD64
2277 ENUMX
2278   BFD_RELOC_X86_64_DTPOFF64
2279 ENUMX
2280   BFD_RELOC_X86_64_TPOFF64
2281 ENUMX
2282   BFD_RELOC_X86_64_TLSGD
2283 ENUMX
2284   BFD_RELOC_X86_64_TLSLD
2285 ENUMX
2286   BFD_RELOC_X86_64_DTPOFF32
2287 ENUMX
2288   BFD_RELOC_X86_64_GOTTPOFF
2289 ENUMX
2290   BFD_RELOC_X86_64_TPOFF32
2291 ENUMDOC
2292   x86-64/elf relocations
2293
2294 ENUM
2295   BFD_RELOC_NS32K_IMM_8
2296 ENUMX
2297   BFD_RELOC_NS32K_IMM_16
2298 ENUMX
2299   BFD_RELOC_NS32K_IMM_32
2300 ENUMX
2301   BFD_RELOC_NS32K_IMM_8_PCREL
2302 ENUMX
2303   BFD_RELOC_NS32K_IMM_16_PCREL
2304 ENUMX
2305   BFD_RELOC_NS32K_IMM_32_PCREL
2306 ENUMX
2307   BFD_RELOC_NS32K_DISP_8
2308 ENUMX
2309   BFD_RELOC_NS32K_DISP_16
2310 ENUMX
2311   BFD_RELOC_NS32K_DISP_32
2312 ENUMX
2313   BFD_RELOC_NS32K_DISP_8_PCREL
2314 ENUMX
2315   BFD_RELOC_NS32K_DISP_16_PCREL
2316 ENUMX
2317   BFD_RELOC_NS32K_DISP_32_PCREL
2318 ENUMDOC
2319   ns32k relocations
2320
2321 ENUM
2322   BFD_RELOC_PDP11_DISP_8_PCREL
2323 ENUMX
2324   BFD_RELOC_PDP11_DISP_6_PCREL
2325 ENUMDOC
2326   PDP11 relocations
2327
2328 ENUM
2329   BFD_RELOC_PJ_CODE_HI16
2330 ENUMX
2331   BFD_RELOC_PJ_CODE_LO16
2332 ENUMX
2333   BFD_RELOC_PJ_CODE_DIR16
2334 ENUMX
2335   BFD_RELOC_PJ_CODE_DIR32
2336 ENUMX
2337   BFD_RELOC_PJ_CODE_REL16
2338 ENUMX
2339   BFD_RELOC_PJ_CODE_REL32
2340 ENUMDOC
2341   Picojava relocs.  Not all of these appear in object files.
2342
2343 ENUM
2344   BFD_RELOC_PPC_B26
2345 ENUMX
2346   BFD_RELOC_PPC_BA26
2347 ENUMX
2348   BFD_RELOC_PPC_TOC16
2349 ENUMX
2350   BFD_RELOC_PPC_B16
2351 ENUMX
2352   BFD_RELOC_PPC_B16_BRTAKEN
2353 ENUMX
2354   BFD_RELOC_PPC_B16_BRNTAKEN
2355 ENUMX
2356   BFD_RELOC_PPC_BA16
2357 ENUMX
2358   BFD_RELOC_PPC_BA16_BRTAKEN
2359 ENUMX
2360   BFD_RELOC_PPC_BA16_BRNTAKEN
2361 ENUMX
2362   BFD_RELOC_PPC_COPY
2363 ENUMX
2364   BFD_RELOC_PPC_GLOB_DAT
2365 ENUMX
2366   BFD_RELOC_PPC_JMP_SLOT
2367 ENUMX
2368   BFD_RELOC_PPC_RELATIVE
2369 ENUMX
2370   BFD_RELOC_PPC_LOCAL24PC
2371 ENUMX
2372   BFD_RELOC_PPC_EMB_NADDR32
2373 ENUMX
2374   BFD_RELOC_PPC_EMB_NADDR16
2375 ENUMX
2376   BFD_RELOC_PPC_EMB_NADDR16_LO
2377 ENUMX
2378   BFD_RELOC_PPC_EMB_NADDR16_HI
2379 ENUMX
2380   BFD_RELOC_PPC_EMB_NADDR16_HA
2381 ENUMX
2382   BFD_RELOC_PPC_EMB_SDAI16
2383 ENUMX
2384   BFD_RELOC_PPC_EMB_SDA2I16
2385 ENUMX
2386   BFD_RELOC_PPC_EMB_SDA2REL
2387 ENUMX
2388   BFD_RELOC_PPC_EMB_SDA21
2389 ENUMX
2390   BFD_RELOC_PPC_EMB_MRKREF
2391 ENUMX
2392   BFD_RELOC_PPC_EMB_RELSEC16
2393 ENUMX
2394   BFD_RELOC_PPC_EMB_RELST_LO
2395 ENUMX
2396   BFD_RELOC_PPC_EMB_RELST_HI
2397 ENUMX
2398   BFD_RELOC_PPC_EMB_RELST_HA
2399 ENUMX
2400   BFD_RELOC_PPC_EMB_BIT_FLD
2401 ENUMX
2402   BFD_RELOC_PPC_EMB_RELSDA
2403 ENUMX
2404   BFD_RELOC_PPC64_HIGHER
2405 ENUMX
2406   BFD_RELOC_PPC64_HIGHER_S
2407 ENUMX
2408   BFD_RELOC_PPC64_HIGHEST
2409 ENUMX
2410   BFD_RELOC_PPC64_HIGHEST_S
2411 ENUMX
2412   BFD_RELOC_PPC64_TOC16_LO
2413 ENUMX
2414   BFD_RELOC_PPC64_TOC16_HI
2415 ENUMX
2416   BFD_RELOC_PPC64_TOC16_HA
2417 ENUMX
2418   BFD_RELOC_PPC64_TOC
2419 ENUMX
2420   BFD_RELOC_PPC64_PLTGOT16
2421 ENUMX
2422   BFD_RELOC_PPC64_PLTGOT16_LO
2423 ENUMX
2424   BFD_RELOC_PPC64_PLTGOT16_HI
2425 ENUMX
2426   BFD_RELOC_PPC64_PLTGOT16_HA
2427 ENUMX
2428   BFD_RELOC_PPC64_ADDR16_DS
2429 ENUMX
2430   BFD_RELOC_PPC64_ADDR16_LO_DS
2431 ENUMX
2432   BFD_RELOC_PPC64_GOT16_DS
2433 ENUMX
2434   BFD_RELOC_PPC64_GOT16_LO_DS
2435 ENUMX
2436   BFD_RELOC_PPC64_PLT16_LO_DS
2437 ENUMX
2438   BFD_RELOC_PPC64_SECTOFF_DS
2439 ENUMX
2440   BFD_RELOC_PPC64_SECTOFF_LO_DS
2441 ENUMX
2442   BFD_RELOC_PPC64_TOC16_DS
2443 ENUMX
2444   BFD_RELOC_PPC64_TOC16_LO_DS
2445 ENUMX
2446   BFD_RELOC_PPC64_PLTGOT16_DS
2447 ENUMX
2448   BFD_RELOC_PPC64_PLTGOT16_LO_DS
2449 ENUMDOC
2450   Power(rs6000) and PowerPC relocations.
2451
2452 ENUM
2453   BFD_RELOC_PPC_TLS
2454 ENUMX
2455   BFD_RELOC_PPC_DTPMOD
2456 ENUMX
2457   BFD_RELOC_PPC_TPREL16
2458 ENUMX
2459   BFD_RELOC_PPC_TPREL16_LO
2460 ENUMX
2461   BFD_RELOC_PPC_TPREL16_HI
2462 ENUMX
2463   BFD_RELOC_PPC_TPREL16_HA
2464 ENUMX
2465   BFD_RELOC_PPC_TPREL
2466 ENUMX
2467   BFD_RELOC_PPC_DTPREL16
2468 ENUMX
2469   BFD_RELOC_PPC_DTPREL16_LO
2470 ENUMX
2471   BFD_RELOC_PPC_DTPREL16_HI
2472 ENUMX
2473   BFD_RELOC_PPC_DTPREL16_HA
2474 ENUMX
2475   BFD_RELOC_PPC_DTPREL
2476 ENUMX
2477   BFD_RELOC_PPC_GOT_TLSGD16
2478 ENUMX
2479   BFD_RELOC_PPC_GOT_TLSGD16_LO
2480 ENUMX
2481   BFD_RELOC_PPC_GOT_TLSGD16_HI
2482 ENUMX
2483   BFD_RELOC_PPC_GOT_TLSGD16_HA
2484 ENUMX
2485   BFD_RELOC_PPC_GOT_TLSLD16
2486 ENUMX
2487   BFD_RELOC_PPC_GOT_TLSLD16_LO
2488 ENUMX
2489   BFD_RELOC_PPC_GOT_TLSLD16_HI
2490 ENUMX
2491   BFD_RELOC_PPC_GOT_TLSLD16_HA
2492 ENUMX
2493   BFD_RELOC_PPC_GOT_TPREL16
2494 ENUMX
2495   BFD_RELOC_PPC_GOT_TPREL16_LO
2496 ENUMX
2497   BFD_RELOC_PPC_GOT_TPREL16_HI
2498 ENUMX
2499   BFD_RELOC_PPC_GOT_TPREL16_HA
2500 ENUMX
2501   BFD_RELOC_PPC_GOT_DTPREL16
2502 ENUMX
2503   BFD_RELOC_PPC_GOT_DTPREL16_LO
2504 ENUMX
2505   BFD_RELOC_PPC_GOT_DTPREL16_HI
2506 ENUMX
2507   BFD_RELOC_PPC_GOT_DTPREL16_HA
2508 ENUMX
2509   BFD_RELOC_PPC64_TPREL16_DS
2510 ENUMX
2511   BFD_RELOC_PPC64_TPREL16_LO_DS
2512 ENUMX
2513   BFD_RELOC_PPC64_TPREL16_HIGHER
2514 ENUMX
2515   BFD_RELOC_PPC64_TPREL16_HIGHERA
2516 ENUMX
2517   BFD_RELOC_PPC64_TPREL16_HIGHEST
2518 ENUMX
2519   BFD_RELOC_PPC64_TPREL16_HIGHESTA
2520 ENUMX
2521   BFD_RELOC_PPC64_DTPREL16_DS
2522 ENUMX
2523   BFD_RELOC_PPC64_DTPREL16_LO_DS
2524 ENUMX
2525   BFD_RELOC_PPC64_DTPREL16_HIGHER
2526 ENUMX
2527   BFD_RELOC_PPC64_DTPREL16_HIGHERA
2528 ENUMX
2529   BFD_RELOC_PPC64_DTPREL16_HIGHEST
2530 ENUMX
2531   BFD_RELOC_PPC64_DTPREL16_HIGHESTA
2532 ENUMDOC
2533   PowerPC and PowerPC64 thread-local storage relocations.
2534
2535 ENUM
2536   BFD_RELOC_I370_D12
2537 ENUMDOC
2538   IBM 370/390 relocations
2539
2540 ENUM
2541   BFD_RELOC_CTOR
2542 ENUMDOC
2543   The type of reloc used to build a constructor table - at the moment
2544   probably a 32 bit wide absolute relocation, but the target can choose.
2545   It generally does map to one of the other relocation types.
2546
2547 ENUM
2548   BFD_RELOC_ARM_PCREL_BRANCH
2549 ENUMDOC
2550   ARM 26 bit pc-relative branch.  The lowest two bits must be zero and are
2551   not stored in the instruction.
2552 ENUM
2553   BFD_RELOC_ARM_PCREL_BLX
2554 ENUMDOC
2555   ARM 26 bit pc-relative branch.  The lowest bit must be zero and is
2556   not stored in the instruction.  The 2nd lowest bit comes from a 1 bit
2557   field in the instruction.
2558 ENUM
2559   BFD_RELOC_THUMB_PCREL_BLX
2560 ENUMDOC
2561   Thumb 22 bit pc-relative branch.  The lowest bit must be zero and is
2562   not stored in the instruction.  The 2nd lowest bit comes from a 1 bit
2563   field in the instruction.
2564 ENUM
2565   BFD_RELOC_ARM_IMMEDIATE
2566 ENUMX
2567   BFD_RELOC_ARM_ADRL_IMMEDIATE
2568 ENUMX
2569   BFD_RELOC_ARM_OFFSET_IMM
2570 ENUMX
2571   BFD_RELOC_ARM_SHIFT_IMM
2572 ENUMX
2573   BFD_RELOC_ARM_SWI
2574 ENUMX
2575   BFD_RELOC_ARM_MULTI
2576 ENUMX
2577   BFD_RELOC_ARM_CP_OFF_IMM
2578 ENUMX
2579   BFD_RELOC_ARM_CP_OFF_IMM_S2
2580 ENUMX
2581   BFD_RELOC_ARM_ADR_IMM
2582 ENUMX
2583   BFD_RELOC_ARM_LDR_IMM
2584 ENUMX
2585   BFD_RELOC_ARM_LITERAL
2586 ENUMX
2587   BFD_RELOC_ARM_IN_POOL
2588 ENUMX
2589   BFD_RELOC_ARM_OFFSET_IMM8
2590 ENUMX
2591   BFD_RELOC_ARM_HWLITERAL
2592 ENUMX
2593   BFD_RELOC_ARM_THUMB_ADD
2594 ENUMX
2595   BFD_RELOC_ARM_THUMB_IMM
2596 ENUMX
2597   BFD_RELOC_ARM_THUMB_SHIFT
2598 ENUMX
2599   BFD_RELOC_ARM_THUMB_OFFSET
2600 ENUMX
2601   BFD_RELOC_ARM_GOT12
2602 ENUMX
2603   BFD_RELOC_ARM_GOT32
2604 ENUMX
2605   BFD_RELOC_ARM_JUMP_SLOT
2606 ENUMX
2607   BFD_RELOC_ARM_COPY
2608 ENUMX
2609   BFD_RELOC_ARM_GLOB_DAT
2610 ENUMX
2611   BFD_RELOC_ARM_PLT32
2612 ENUMX
2613   BFD_RELOC_ARM_RELATIVE
2614 ENUMX
2615   BFD_RELOC_ARM_GOTOFF
2616 ENUMX
2617   BFD_RELOC_ARM_GOTPC
2618 ENUMDOC
2619   These relocs are only used within the ARM assembler.  They are not
2620   (at present) written to any object files.
2621
2622 ENUM
2623   BFD_RELOC_SH_PCDISP8BY2
2624 ENUMX
2625   BFD_RELOC_SH_PCDISP12BY2
2626 ENUMX
2627   BFD_RELOC_SH_IMM4
2628 ENUMX
2629   BFD_RELOC_SH_IMM4BY2
2630 ENUMX
2631   BFD_RELOC_SH_IMM4BY4
2632 ENUMX
2633   BFD_RELOC_SH_IMM8
2634 ENUMX
2635   BFD_RELOC_SH_IMM8BY2
2636 ENUMX
2637   BFD_RELOC_SH_IMM8BY4
2638 ENUMX
2639   BFD_RELOC_SH_PCRELIMM8BY2
2640 ENUMX
2641   BFD_RELOC_SH_PCRELIMM8BY4
2642 ENUMX
2643   BFD_RELOC_SH_SWITCH16
2644 ENUMX
2645   BFD_RELOC_SH_SWITCH32
2646 ENUMX
2647   BFD_RELOC_SH_USES
2648 ENUMX
2649   BFD_RELOC_SH_COUNT
2650 ENUMX
2651   BFD_RELOC_SH_ALIGN
2652 ENUMX
2653   BFD_RELOC_SH_CODE
2654 ENUMX
2655   BFD_RELOC_SH_DATA
2656 ENUMX
2657   BFD_RELOC_SH_LABEL
2658 ENUMX
2659   BFD_RELOC_SH_LOOP_START
2660 ENUMX
2661   BFD_RELOC_SH_LOOP_END
2662 ENUMX
2663   BFD_RELOC_SH_COPY
2664 ENUMX
2665   BFD_RELOC_SH_GLOB_DAT
2666 ENUMX
2667   BFD_RELOC_SH_JMP_SLOT
2668 ENUMX
2669   BFD_RELOC_SH_RELATIVE
2670 ENUMX
2671   BFD_RELOC_SH_GOTPC
2672 ENUMX
2673   BFD_RELOC_SH_GOT_LOW16
2674 ENUMX
2675   BFD_RELOC_SH_GOT_MEDLOW16
2676 ENUMX
2677   BFD_RELOC_SH_GOT_MEDHI16
2678 ENUMX
2679   BFD_RELOC_SH_GOT_HI16
2680 ENUMX
2681   BFD_RELOC_SH_GOTPLT_LOW16
2682 ENUMX
2683   BFD_RELOC_SH_GOTPLT_MEDLOW16
2684 ENUMX
2685   BFD_RELOC_SH_GOTPLT_MEDHI16
2686 ENUMX
2687   BFD_RELOC_SH_GOTPLT_HI16
2688 ENUMX
2689   BFD_RELOC_SH_PLT_LOW16
2690 ENUMX
2691   BFD_RELOC_SH_PLT_MEDLOW16
2692 ENUMX
2693   BFD_RELOC_SH_PLT_MEDHI16
2694 ENUMX
2695   BFD_RELOC_SH_PLT_HI16
2696 ENUMX
2697   BFD_RELOC_SH_GOTOFF_LOW16
2698 ENUMX
2699   BFD_RELOC_SH_GOTOFF_MEDLOW16
2700 ENUMX
2701   BFD_RELOC_SH_GOTOFF_MEDHI16
2702 ENUMX
2703   BFD_RELOC_SH_GOTOFF_HI16
2704 ENUMX
2705   BFD_RELOC_SH_GOTPC_LOW16
2706 ENUMX
2707   BFD_RELOC_SH_GOTPC_MEDLOW16
2708 ENUMX
2709   BFD_RELOC_SH_GOTPC_MEDHI16
2710 ENUMX
2711   BFD_RELOC_SH_GOTPC_HI16
2712 ENUMX
2713   BFD_RELOC_SH_COPY64
2714 ENUMX
2715   BFD_RELOC_SH_GLOB_DAT64
2716 ENUMX
2717   BFD_RELOC_SH_JMP_SLOT64
2718 ENUMX
2719   BFD_RELOC_SH_RELATIVE64
2720 ENUMX
2721   BFD_RELOC_SH_GOT10BY4
2722 ENUMX
2723   BFD_RELOC_SH_GOT10BY8
2724 ENUMX
2725   BFD_RELOC_SH_GOTPLT10BY4
2726 ENUMX
2727   BFD_RELOC_SH_GOTPLT10BY8
2728 ENUMX
2729   BFD_RELOC_SH_GOTPLT32
2730 ENUMX
2731   BFD_RELOC_SH_SHMEDIA_CODE
2732 ENUMX
2733   BFD_RELOC_SH_IMMU5
2734 ENUMX
2735   BFD_RELOC_SH_IMMS6
2736 ENUMX
2737   BFD_RELOC_SH_IMMS6BY32
2738 ENUMX
2739   BFD_RELOC_SH_IMMU6
2740 ENUMX
2741   BFD_RELOC_SH_IMMS10
2742 ENUMX
2743   BFD_RELOC_SH_IMMS10BY2
2744 ENUMX
2745   BFD_RELOC_SH_IMMS10BY4
2746 ENUMX
2747   BFD_RELOC_SH_IMMS10BY8
2748 ENUMX
2749   BFD_RELOC_SH_IMMS16
2750 ENUMX
2751   BFD_RELOC_SH_IMMU16
2752 ENUMX
2753   BFD_RELOC_SH_IMM_LOW16
2754 ENUMX
2755   BFD_RELOC_SH_IMM_LOW16_PCREL
2756 ENUMX
2757   BFD_RELOC_SH_IMM_MEDLOW16
2758 ENUMX
2759   BFD_RELOC_SH_IMM_MEDLOW16_PCREL
2760 ENUMX
2761   BFD_RELOC_SH_IMM_MEDHI16
2762 ENUMX
2763   BFD_RELOC_SH_IMM_MEDHI16_PCREL
2764 ENUMX
2765   BFD_RELOC_SH_IMM_HI16
2766 ENUMX
2767   BFD_RELOC_SH_IMM_HI16_PCREL
2768 ENUMX
2769   BFD_RELOC_SH_PT_16
2770 ENUMX
2771   BFD_RELOC_SH_TLS_GD_32
2772 ENUMX
2773   BFD_RELOC_SH_TLS_LD_32
2774 ENUMX
2775   BFD_RELOC_SH_TLS_LDO_32
2776 ENUMX
2777   BFD_RELOC_SH_TLS_IE_32
2778 ENUMX
2779   BFD_RELOC_SH_TLS_LE_32
2780 ENUMX
2781   BFD_RELOC_SH_TLS_DTPMOD32
2782 ENUMX
2783   BFD_RELOC_SH_TLS_DTPOFF32
2784 ENUMX
2785   BFD_RELOC_SH_TLS_TPOFF32
2786 ENUMDOC
2787   Renesas / SuperH SH relocs.  Not all of these appear in object files.
2788
2789 ENUM
2790   BFD_RELOC_THUMB_PCREL_BRANCH9
2791 ENUMX
2792   BFD_RELOC_THUMB_PCREL_BRANCH12
2793 ENUMX
2794   BFD_RELOC_THUMB_PCREL_BRANCH23
2795 ENUMDOC
2796   Thumb 23-, 12- and 9-bit pc-relative branches.  The lowest bit must
2797   be zero and is not stored in the instruction.
2798
2799 ENUM
2800   BFD_RELOC_ARC_B22_PCREL
2801 ENUMDOC
2802   ARC Cores relocs.
2803   ARC 22 bit pc-relative branch.  The lowest two bits must be zero and are
2804   not stored in the instruction.  The high 20 bits are installed in bits 26
2805   through 7 of the instruction.
2806 ENUM
2807   BFD_RELOC_ARC_B26
2808 ENUMDOC
2809   ARC 26 bit absolute branch.  The lowest two bits must be zero and are not
2810   stored in the instruction.  The high 24 bits are installed in bits 23
2811   through 0.
2812
2813 ENUM
2814   BFD_RELOC_D10V_10_PCREL_R
2815 ENUMDOC
2816   Mitsubishi D10V relocs.
2817   This is a 10-bit reloc with the right 2 bits
2818   assumed to be 0.
2819 ENUM
2820   BFD_RELOC_D10V_10_PCREL_L
2821 ENUMDOC
2822   Mitsubishi D10V relocs.
2823   This is a 10-bit reloc with the right 2 bits
2824   assumed to be 0.  This is the same as the previous reloc
2825   except it is in the left container, i.e.,
2826   shifted left 15 bits.
2827 ENUM
2828   BFD_RELOC_D10V_18
2829 ENUMDOC
2830   This is an 18-bit reloc with the right 2 bits
2831   assumed to be 0.
2832 ENUM
2833   BFD_RELOC_D10V_18_PCREL
2834 ENUMDOC
2835   This is an 18-bit reloc with the right 2 bits
2836   assumed to be 0.
2837
2838 ENUM
2839   BFD_RELOC_D30V_6
2840 ENUMDOC
2841   Mitsubishi D30V relocs.
2842   This is a 6-bit absolute reloc.
2843 ENUM
2844   BFD_RELOC_D30V_9_PCREL
2845 ENUMDOC
2846   This is a 6-bit pc-relative reloc with
2847   the right 3 bits assumed to be 0.
2848 ENUM
2849   BFD_RELOC_D30V_9_PCREL_R
2850 ENUMDOC
2851   This is a 6-bit pc-relative reloc with
2852   the right 3 bits assumed to be 0. Same
2853   as the previous reloc but on the right side
2854   of the container.
2855 ENUM
2856   BFD_RELOC_D30V_15
2857 ENUMDOC
2858   This is a 12-bit absolute reloc with the
2859   right 3 bitsassumed to be 0.
2860 ENUM
2861   BFD_RELOC_D30V_15_PCREL
2862 ENUMDOC
2863   This is a 12-bit pc-relative reloc with
2864   the right 3 bits assumed to be 0.
2865 ENUM
2866   BFD_RELOC_D30V_15_PCREL_R
2867 ENUMDOC
2868   This is a 12-bit pc-relative reloc with
2869   the right 3 bits assumed to be 0. Same
2870   as the previous reloc but on the right side
2871   of the container.
2872 ENUM
2873   BFD_RELOC_D30V_21
2874 ENUMDOC
2875   This is an 18-bit absolute reloc with
2876   the right 3 bits assumed to be 0.
2877 ENUM
2878   BFD_RELOC_D30V_21_PCREL
2879 ENUMDOC
2880   This is an 18-bit pc-relative reloc with
2881   the right 3 bits assumed to be 0.
2882 ENUM
2883   BFD_RELOC_D30V_21_PCREL_R
2884 ENUMDOC
2885   This is an 18-bit pc-relative reloc with
2886   the right 3 bits assumed to be 0. Same
2887   as the previous reloc but on the right side
2888   of the container.
2889 ENUM
2890   BFD_RELOC_D30V_32
2891 ENUMDOC
2892   This is a 32-bit absolute reloc.
2893 ENUM
2894   BFD_RELOC_D30V_32_PCREL
2895 ENUMDOC
2896   This is a 32-bit pc-relative reloc.
2897
2898 ENUM
2899   BFD_RELOC_DLX_HI16_S
2900 ENUMDOC
2901   DLX relocs
2902 ENUM
2903   BFD_RELOC_DLX_LO16
2904 ENUMDOC
2905   DLX relocs
2906 ENUM
2907   BFD_RELOC_DLX_JMP26
2908 ENUMDOC
2909   DLX relocs
2910
2911 ENUM
2912   BFD_RELOC_M32R_24
2913 ENUMDOC
2914   Renesas M32R (formerly Mitsubishi M32R) relocs.
2915   This is a 24 bit absolute address.
2916 ENUM
2917   BFD_RELOC_M32R_10_PCREL
2918 ENUMDOC
2919   This is a 10-bit pc-relative reloc with the right 2 bits assumed to be 0.
2920 ENUM
2921   BFD_RELOC_M32R_18_PCREL
2922 ENUMDOC
2923   This is an 18-bit reloc with the right 2 bits assumed to be 0.
2924 ENUM
2925   BFD_RELOC_M32R_26_PCREL
2926 ENUMDOC
2927   This is a 26-bit reloc with the right 2 bits assumed to be 0.
2928 ENUM
2929   BFD_RELOC_M32R_HI16_ULO
2930 ENUMDOC
2931   This is a 16-bit reloc containing the high 16 bits of an address
2932   used when the lower 16 bits are treated as unsigned.
2933 ENUM
2934   BFD_RELOC_M32R_HI16_SLO
2935 ENUMDOC
2936   This is a 16-bit reloc containing the high 16 bits of an address
2937   used when the lower 16 bits are treated as signed.
2938 ENUM
2939   BFD_RELOC_M32R_LO16
2940 ENUMDOC
2941   This is a 16-bit reloc containing the lower 16 bits of an address.
2942 ENUM
2943   BFD_RELOC_M32R_SDA16
2944 ENUMDOC
2945   This is a 16-bit reloc containing the small data area offset for use in
2946   add3, load, and store instructions.
2947 ENUM
2948   BFD_RELOC_M32R_GOT24
2949 ENUMX
2950   BFD_RELOC_M32R_26_PLTREL
2951 ENUMX
2952   BFD_RELOC_M32R_COPY
2953 ENUMX
2954   BFD_RELOC_M32R_GLOB_DAT
2955 ENUMX
2956   BFD_RELOC_M32R_JMP_SLOT
2957 ENUMX
2958   BFD_RELOC_M32R_RELATIVE
2959 ENUMX
2960   BFD_RELOC_M32R_GOTOFF
2961 ENUMX
2962   BFD_RELOC_M32R_GOTPC24
2963 ENUMX
2964   BFD_RELOC_M32R_GOT16_HI_ULO
2965 ENUMX
2966   BFD_RELOC_M32R_GOT16_HI_SLO
2967 ENUMX
2968   BFD_RELOC_M32R_GOT16_LO
2969 ENUMX
2970   BFD_RELOC_M32R_GOTPC_HI_ULO
2971 ENUMX
2972   BFD_RELOC_M32R_GOTPC_HI_SLO
2973 ENUMX
2974   BFD_RELOC_M32R_GOTPC_LO
2975 ENUMDOC
2976   For PIC.
2977
2978
2979 ENUM
2980   BFD_RELOC_V850_9_PCREL
2981 ENUMDOC
2982   This is a 9-bit reloc
2983 ENUM
2984   BFD_RELOC_V850_22_PCREL
2985 ENUMDOC
2986   This is a 22-bit reloc
2987
2988 ENUM
2989   BFD_RELOC_V850_SDA_16_16_OFFSET
2990 ENUMDOC
2991   This is a 16 bit offset from the short data area pointer.
2992 ENUM
2993   BFD_RELOC_V850_SDA_15_16_OFFSET
2994 ENUMDOC
2995   This is a 16 bit offset (of which only 15 bits are used) from the
2996   short data area pointer.
2997 ENUM
2998   BFD_RELOC_V850_ZDA_16_16_OFFSET
2999 ENUMDOC
3000   This is a 16 bit offset from the zero data area pointer.
3001 ENUM
3002   BFD_RELOC_V850_ZDA_15_16_OFFSET
3003 ENUMDOC
3004   This is a 16 bit offset (of which only 15 bits are used) from the
3005   zero data area pointer.
3006 ENUM
3007   BFD_RELOC_V850_TDA_6_8_OFFSET
3008 ENUMDOC
3009   This is an 8 bit offset (of which only 6 bits are used) from the
3010   tiny data area pointer.
3011 ENUM
3012   BFD_RELOC_V850_TDA_7_8_OFFSET
3013 ENUMDOC
3014   This is an 8bit offset (of which only 7 bits are used) from the tiny
3015   data area pointer.
3016 ENUM
3017   BFD_RELOC_V850_TDA_7_7_OFFSET
3018 ENUMDOC
3019   This is a 7 bit offset from the tiny data area pointer.
3020 ENUM
3021   BFD_RELOC_V850_TDA_16_16_OFFSET
3022 ENUMDOC
3023   This is a 16 bit offset from the tiny data area pointer.
3024 COMMENT
3025 ENUM
3026   BFD_RELOC_V850_TDA_4_5_OFFSET
3027 ENUMDOC
3028   This is a 5 bit offset (of which only 4 bits are used) from the tiny
3029   data area pointer.
3030 ENUM
3031   BFD_RELOC_V850_TDA_4_4_OFFSET
3032 ENUMDOC
3033   This is a 4 bit offset from the tiny data area pointer.
3034 ENUM
3035   BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
3036 ENUMDOC
3037   This is a 16 bit offset from the short data area pointer, with the
3038   bits placed non-contiguously in the instruction.
3039 ENUM
3040   BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
3041 ENUMDOC
3042   This is a 16 bit offset from the zero data area pointer, with the
3043   bits placed non-contiguously in the instruction.
3044 ENUM
3045   BFD_RELOC_V850_CALLT_6_7_OFFSET
3046 ENUMDOC
3047   This is a 6 bit offset from the call table base pointer.
3048 ENUM
3049   BFD_RELOC_V850_CALLT_16_16_OFFSET
3050 ENUMDOC
3051   This is a 16 bit offset from the call table base pointer.
3052 ENUM
3053   BFD_RELOC_V850_LONGCALL
3054 ENUMDOC
3055   Used for relaxing indirect function calls.
3056 ENUM
3057   BFD_RELOC_V850_LONGJUMP
3058 ENUMDOC
3059   Used for relaxing indirect jumps.
3060 ENUM
3061   BFD_RELOC_V850_ALIGN
3062 ENUMDOC
3063   Used to maintain alignment whilst relaxing.
3064 ENUM
3065   BFD_RELOC_MN10300_32_PCREL
3066 ENUMDOC
3067   This is a 32bit pcrel reloc for the mn10300, offset by two bytes in the
3068   instruction.
3069 ENUM
3070   BFD_RELOC_MN10300_16_PCREL
3071 ENUMDOC
3072   This is a 16bit pcrel reloc for the mn10300, offset by two bytes in the
3073   instruction.
3074
3075 ENUM
3076   BFD_RELOC_TIC30_LDP
3077 ENUMDOC
3078   This is a 8bit DP reloc for the tms320c30, where the most
3079   significant 8 bits of a 24 bit word are placed into the least
3080   significant 8 bits of the opcode.
3081
3082 ENUM
3083   BFD_RELOC_TIC54X_PARTLS7
3084 ENUMDOC
3085   This is a 7bit reloc for the tms320c54x, where the least
3086   significant 7 bits of a 16 bit word are placed into the least
3087   significant 7 bits of the opcode.
3088
3089 ENUM
3090   BFD_RELOC_TIC54X_PARTMS9
3091 ENUMDOC
3092   This is a 9bit DP reloc for the tms320c54x, where the most
3093   significant 9 bits of a 16 bit word are placed into the least
3094   significant 9 bits of the opcode.
3095
3096 ENUM
3097   BFD_RELOC_TIC54X_23
3098 ENUMDOC
3099   This is an extended address 23-bit reloc for the tms320c54x.
3100
3101 ENUM
3102   BFD_RELOC_TIC54X_16_OF_23
3103 ENUMDOC
3104   This is a 16-bit reloc for the tms320c54x, where the least
3105   significant 16 bits of a 23-bit extended address are placed into
3106   the opcode.
3107
3108 ENUM
3109   BFD_RELOC_TIC54X_MS7_OF_23
3110 ENUMDOC
3111   This is a reloc for the tms320c54x, where the most
3112   significant 7 bits of a 23-bit extended address are placed into
3113   the opcode.
3114
3115 ENUM
3116   BFD_RELOC_FR30_48
3117 ENUMDOC
3118   This is a 48 bit reloc for the FR30 that stores 32 bits.
3119 ENUM
3120   BFD_RELOC_FR30_20
3121 ENUMDOC
3122   This is a 32 bit reloc for the FR30 that stores 20 bits split up into
3123   two sections.
3124 ENUM
3125   BFD_RELOC_FR30_6_IN_4
3126 ENUMDOC
3127   This is a 16 bit reloc for the FR30 that stores a 6 bit word offset in
3128   4 bits.
3129 ENUM
3130   BFD_RELOC_FR30_8_IN_8
3131 ENUMDOC
3132   This is a 16 bit reloc for the FR30 that stores an 8 bit byte offset
3133   into 8 bits.
3134 ENUM
3135   BFD_RELOC_FR30_9_IN_8
3136 ENUMDOC
3137   This is a 16 bit reloc for the FR30 that stores a 9 bit short offset
3138   into 8 bits.
3139 ENUM
3140   BFD_RELOC_FR30_10_IN_8
3141 ENUMDOC
3142   This is a 16 bit reloc for the FR30 that stores a 10 bit word offset
3143   into 8 bits.
3144 ENUM
3145   BFD_RELOC_FR30_9_PCREL
3146 ENUMDOC
3147   This is a 16 bit reloc for the FR30 that stores a 9 bit pc relative
3148   short offset into 8 bits.
3149 ENUM
3150   BFD_RELOC_FR30_12_PCREL
3151 ENUMDOC
3152   This is a 16 bit reloc for the FR30 that stores a 12 bit pc relative
3153   short offset into 11 bits.
3154
3155 ENUM
3156   BFD_RELOC_MCORE_PCREL_IMM8BY4
3157 ENUMX
3158   BFD_RELOC_MCORE_PCREL_IMM11BY2
3159 ENUMX
3160   BFD_RELOC_MCORE_PCREL_IMM4BY2
3161 ENUMX
3162   BFD_RELOC_MCORE_PCREL_32
3163 ENUMX
3164   BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2
3165 ENUMX
3166   BFD_RELOC_MCORE_RVA
3167 ENUMDOC
3168   Motorola Mcore relocations.
3169
3170 ENUM
3171   BFD_RELOC_MMIX_GETA
3172 ENUMX
3173   BFD_RELOC_MMIX_GETA_1
3174 ENUMX
3175   BFD_RELOC_MMIX_GETA_2
3176 ENUMX
3177   BFD_RELOC_MMIX_GETA_3
3178 ENUMDOC
3179   These are relocations for the GETA instruction.
3180 ENUM
3181   BFD_RELOC_MMIX_CBRANCH
3182 ENUMX
3183   BFD_RELOC_MMIX_CBRANCH_J
3184 ENUMX
3185   BFD_RELOC_MMIX_CBRANCH_1
3186 ENUMX
3187   BFD_RELOC_MMIX_CBRANCH_2
3188 ENUMX
3189   BFD_RELOC_MMIX_CBRANCH_3
3190 ENUMDOC
3191   These are relocations for a conditional branch instruction.
3192 ENUM
3193   BFD_RELOC_MMIX_PUSHJ
3194 ENUMX
3195   BFD_RELOC_MMIX_PUSHJ_1
3196 ENUMX
3197   BFD_RELOC_MMIX_PUSHJ_2
3198 ENUMX
3199   BFD_RELOC_MMIX_PUSHJ_3
3200 ENUMX
3201   BFD_RELOC_MMIX_PUSHJ_STUBBABLE
3202 ENUMDOC
3203   These are relocations for the PUSHJ instruction.
3204 ENUM
3205   BFD_RELOC_MMIX_JMP
3206 ENUMX
3207   BFD_RELOC_MMIX_JMP_1
3208 ENUMX
3209   BFD_RELOC_MMIX_JMP_2
3210 ENUMX
3211   BFD_RELOC_MMIX_JMP_3
3212 ENUMDOC
3213   These are relocations for the JMP instruction.
3214 ENUM
3215   BFD_RELOC_MMIX_ADDR19
3216 ENUMDOC
3217   This is a relocation for a relative address as in a GETA instruction or
3218   a branch.
3219 ENUM
3220   BFD_RELOC_MMIX_ADDR27
3221 ENUMDOC
3222   This is a relocation for a relative address as in a JMP instruction.
3223 ENUM
3224   BFD_RELOC_MMIX_REG_OR_BYTE
3225 ENUMDOC
3226   This is a relocation for an instruction field that may be a general
3227   register or a value 0..255.
3228 ENUM
3229   BFD_RELOC_MMIX_REG
3230 ENUMDOC
3231   This is a relocation for an instruction field that may be a general
3232   register.
3233 ENUM
3234   BFD_RELOC_MMIX_BASE_PLUS_OFFSET
3235 ENUMDOC
3236   This is a relocation for two instruction fields holding a register and
3237   an offset, the equivalent of the relocation.
3238 ENUM
3239   BFD_RELOC_MMIX_LOCAL
3240 ENUMDOC
3241   This relocation is an assertion that the expression is not allocated as
3242   a global register.  It does not modify contents.
3243
3244 ENUM
3245   BFD_RELOC_AVR_7_PCREL
3246 ENUMDOC
3247   This is a 16 bit reloc for the AVR that stores 8 bit pc relative
3248   short offset into 7 bits.
3249 ENUM
3250   BFD_RELOC_AVR_13_PCREL
3251 ENUMDOC
3252   This is a 16 bit reloc for the AVR that stores 13 bit pc relative
3253   short offset into 12 bits.
3254 ENUM
3255   BFD_RELOC_AVR_16_PM
3256 ENUMDOC
3257   This is a 16 bit reloc for the AVR that stores 17 bit value (usually
3258   program memory address) into 16 bits.
3259 ENUM
3260   BFD_RELOC_AVR_LO8_LDI
3261 ENUMDOC
3262   This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3263   data memory address) into 8 bit immediate value of LDI insn.
3264 ENUM
3265   BFD_RELOC_AVR_HI8_LDI
3266 ENUMDOC
3267   This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3268   of data memory address) into 8 bit immediate value of LDI insn.
3269 ENUM
3270   BFD_RELOC_AVR_HH8_LDI
3271 ENUMDOC
3272   This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3273   of program memory address) into 8 bit immediate value of LDI insn.
3274 ENUM
3275   BFD_RELOC_AVR_LO8_LDI_NEG
3276 ENUMDOC
3277   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3278   (usually data memory address) into 8 bit immediate value of SUBI insn.
3279 ENUM
3280   BFD_RELOC_AVR_HI8_LDI_NEG
3281 ENUMDOC
3282   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3283   (high 8 bit of data memory address) into 8 bit immediate value of
3284   SUBI insn.
3285 ENUM
3286   BFD_RELOC_AVR_HH8_LDI_NEG
3287 ENUMDOC
3288   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3289   (most high 8 bit of program memory address) into 8 bit immediate value
3290   of LDI or SUBI insn.
3291 ENUM
3292   BFD_RELOC_AVR_LO8_LDI_PM
3293 ENUMDOC
3294   This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3295   command address) into 8 bit immediate value of LDI insn.
3296 ENUM
3297   BFD_RELOC_AVR_HI8_LDI_PM
3298 ENUMDOC
3299   This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3300   of command address) into 8 bit immediate value of LDI insn.
3301 ENUM
3302   BFD_RELOC_AVR_HH8_LDI_PM
3303 ENUMDOC
3304   This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3305   of command address) into 8 bit immediate value of LDI insn.
3306 ENUM
3307   BFD_RELOC_AVR_LO8_LDI_PM_NEG
3308 ENUMDOC
3309   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3310   (usually command address) into 8 bit immediate value of SUBI insn.
3311 ENUM
3312   BFD_RELOC_AVR_HI8_LDI_PM_NEG
3313 ENUMDOC
3314   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3315   (high 8 bit of 16 bit command address) into 8 bit immediate value
3316   of SUBI insn.
3317 ENUM
3318   BFD_RELOC_AVR_HH8_LDI_PM_NEG
3319 ENUMDOC
3320   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3321   (high 6 bit of 22 bit command address) into 8 bit immediate
3322   value of SUBI insn.
3323 ENUM
3324   BFD_RELOC_AVR_CALL
3325 ENUMDOC
3326   This is a 32 bit reloc for the AVR that stores 23 bit value
3327   into 22 bits.
3328
3329 ENUM
3330   BFD_RELOC_390_12
3331 ENUMDOC
3332    Direct 12 bit.
3333 ENUM
3334   BFD_RELOC_390_GOT12
3335 ENUMDOC
3336   12 bit GOT offset.
3337 ENUM
3338   BFD_RELOC_390_PLT32
3339 ENUMDOC
3340   32 bit PC relative PLT address.
3341 ENUM
3342   BFD_RELOC_390_COPY
3343 ENUMDOC
3344   Copy symbol at runtime.
3345 ENUM
3346   BFD_RELOC_390_GLOB_DAT
3347 ENUMDOC
3348   Create GOT entry.
3349 ENUM
3350   BFD_RELOC_390_JMP_SLOT
3351 ENUMDOC
3352   Create PLT entry.
3353 ENUM
3354   BFD_RELOC_390_RELATIVE
3355 ENUMDOC
3356   Adjust by program base.
3357 ENUM
3358   BFD_RELOC_390_GOTPC
3359 ENUMDOC
3360   32 bit PC relative offset to GOT.
3361 ENUM
3362   BFD_RELOC_390_GOT16
3363 ENUMDOC
3364   16 bit GOT offset.
3365 ENUM
3366   BFD_RELOC_390_PC16DBL
3367 ENUMDOC
3368   PC relative 16 bit shifted by 1.
3369 ENUM
3370   BFD_RELOC_390_PLT16DBL
3371 ENUMDOC
3372   16 bit PC rel. PLT shifted by 1.
3373 ENUM
3374   BFD_RELOC_390_PC32DBL
3375 ENUMDOC
3376   PC relative 32 bit shifted by 1.
3377 ENUM
3378   BFD_RELOC_390_PLT32DBL
3379 ENUMDOC
3380   32 bit PC rel. PLT shifted by 1.
3381 ENUM
3382   BFD_RELOC_390_GOTPCDBL
3383 ENUMDOC
3384   32 bit PC rel. GOT shifted by 1.
3385 ENUM
3386   BFD_RELOC_390_GOT64
3387 ENUMDOC
3388   64 bit GOT offset.
3389 ENUM
3390   BFD_RELOC_390_PLT64
3391 ENUMDOC
3392   64 bit PC relative PLT address.
3393 ENUM
3394   BFD_RELOC_390_GOTENT
3395 ENUMDOC
3396   32 bit rel. offset to GOT entry.
3397 ENUM
3398   BFD_RELOC_390_GOTOFF64
3399 ENUMDOC
3400   64 bit offset to GOT.
3401 ENUM
3402   BFD_RELOC_390_GOTPLT12
3403 ENUMDOC
3404   12-bit offset to symbol-entry within GOT, with PLT handling.
3405 ENUM
3406   BFD_RELOC_390_GOTPLT16
3407 ENUMDOC
3408   16-bit offset to symbol-entry within GOT, with PLT handling.
3409 ENUM
3410   BFD_RELOC_390_GOTPLT32
3411 ENUMDOC
3412   32-bit offset to symbol-entry within GOT, with PLT handling.
3413 ENUM
3414   BFD_RELOC_390_GOTPLT64
3415 ENUMDOC
3416   64-bit offset to symbol-entry within GOT, with PLT handling.
3417 ENUM
3418   BFD_RELOC_390_GOTPLTENT
3419 ENUMDOC
3420   32-bit rel. offset to symbol-entry within GOT, with PLT handling.
3421 ENUM
3422   BFD_RELOC_390_PLTOFF16
3423 ENUMDOC
3424   16-bit rel. offset from the GOT to a PLT entry.
3425 ENUM
3426   BFD_RELOC_390_PLTOFF32
3427 ENUMDOC
3428   32-bit rel. offset from the GOT to a PLT entry.
3429 ENUM
3430   BFD_RELOC_390_PLTOFF64
3431 ENUMDOC
3432   64-bit rel. offset from the GOT to a PLT entry.
3433
3434 ENUM
3435   BFD_RELOC_390_TLS_LOAD
3436 ENUMX
3437   BFD_RELOC_390_TLS_GDCALL
3438 ENUMX
3439   BFD_RELOC_390_TLS_LDCALL
3440 ENUMX
3441   BFD_RELOC_390_TLS_GD32
3442 ENUMX
3443   BFD_RELOC_390_TLS_GD64
3444 ENUMX
3445   BFD_RELOC_390_TLS_GOTIE12
3446 ENUMX
3447   BFD_RELOC_390_TLS_GOTIE32
3448 ENUMX
3449   BFD_RELOC_390_TLS_GOTIE64
3450 ENUMX
3451   BFD_RELOC_390_TLS_LDM32
3452 ENUMX
3453   BFD_RELOC_390_TLS_LDM64
3454 ENUMX
3455   BFD_RELOC_390_TLS_IE32
3456 ENUMX
3457   BFD_RELOC_390_TLS_IE64
3458 ENUMX
3459   BFD_RELOC_390_TLS_IEENT
3460 ENUMX
3461   BFD_RELOC_390_TLS_LE32
3462 ENUMX
3463   BFD_RELOC_390_TLS_LE64
3464 ENUMX
3465   BFD_RELOC_390_TLS_LDO32
3466 ENUMX
3467   BFD_RELOC_390_TLS_LDO64
3468 ENUMX
3469   BFD_RELOC_390_TLS_DTPMOD
3470 ENUMX
3471   BFD_RELOC_390_TLS_DTPOFF
3472 ENUMX
3473   BFD_RELOC_390_TLS_TPOFF
3474 ENUMDOC
3475   s390 tls relocations.
3476
3477 ENUM
3478   BFD_RELOC_390_20
3479 ENUMX
3480   BFD_RELOC_390_GOT20
3481 ENUMX
3482   BFD_RELOC_390_GOTPLT20
3483 ENUMX
3484   BFD_RELOC_390_TLS_GOTIE20
3485 ENUMDOC
3486   Long displacement extension.
3487
3488 ENUM
3489   BFD_RELOC_IP2K_FR9
3490 ENUMDOC
3491   Scenix IP2K - 9-bit register number / data address
3492 ENUM
3493   BFD_RELOC_IP2K_BANK
3494 ENUMDOC
3495   Scenix IP2K - 4-bit register/data bank number
3496 ENUM
3497   BFD_RELOC_IP2K_ADDR16CJP
3498 ENUMDOC
3499   Scenix IP2K - low 13 bits of instruction word address
3500 ENUM
3501   BFD_RELOC_IP2K_PAGE3
3502 ENUMDOC
3503   Scenix IP2K - high 3 bits of instruction word address
3504 ENUM
3505   BFD_RELOC_IP2K_LO8DATA
3506 ENUMX
3507   BFD_RELOC_IP2K_HI8DATA
3508 ENUMX
3509   BFD_RELOC_IP2K_EX8DATA
3510 ENUMDOC
3511   Scenix IP2K - ext/low/high 8 bits of data address
3512 ENUM
3513   BFD_RELOC_IP2K_LO8INSN
3514 ENUMX
3515   BFD_RELOC_IP2K_HI8INSN
3516 ENUMDOC
3517   Scenix IP2K - low/high 8 bits of instruction word address
3518 ENUM
3519   BFD_RELOC_IP2K_PC_SKIP
3520 ENUMDOC
3521   Scenix IP2K - even/odd PC modifier to modify snb pcl.0
3522 ENUM
3523   BFD_RELOC_IP2K_TEXT
3524 ENUMDOC
3525   Scenix IP2K - 16 bit word address in text section.
3526 ENUM
3527   BFD_RELOC_IP2K_FR_OFFSET
3528 ENUMDOC
3529   Scenix IP2K - 7-bit sp or dp offset
3530 ENUM
3531   BFD_RELOC_VPE4KMATH_DATA
3532 ENUMX
3533   BFD_RELOC_VPE4KMATH_INSN
3534 ENUMDOC
3535   Scenix VPE4K coprocessor - data/insn-space addressing
3536
3537 ENUM
3538   BFD_RELOC_VTABLE_INHERIT
3539 ENUMX
3540   BFD_RELOC_VTABLE_ENTRY
3541 ENUMDOC
3542   These two relocations are used by the linker to determine which of
3543   the entries in a C++ virtual function table are actually used.  When
3544   the --gc-sections option is given, the linker will zero out the entries
3545   that are not used, so that the code for those functions need not be
3546   included in the output.
3547
3548   VTABLE_INHERIT is a zero-space relocation used to describe to the
3549   linker the inheritance tree of a C++ virtual function table.  The
3550   relocation's symbol should be the parent class' vtable, and the
3551   relocation should be located at the child vtable.
3552
3553   VTABLE_ENTRY is a zero-space relocation that describes the use of a
3554   virtual function table entry.  The reloc's symbol should refer to the
3555   table of the class mentioned in the code.  Off of that base, an offset
3556   describes the entry that is being used.  For Rela hosts, this offset
3557   is stored in the reloc's addend.  For Rel hosts, we are forced to put
3558   this offset in the reloc's section offset.
3559
3560 ENUM
3561   BFD_RELOC_IA64_IMM14
3562 ENUMX
3563   BFD_RELOC_IA64_IMM22
3564 ENUMX
3565   BFD_RELOC_IA64_IMM64
3566 ENUMX
3567   BFD_RELOC_IA64_DIR32MSB
3568 ENUMX
3569   BFD_RELOC_IA64_DIR32LSB
3570 ENUMX
3571   BFD_RELOC_IA64_DIR64MSB
3572 ENUMX
3573   BFD_RELOC_IA64_DIR64LSB
3574 ENUMX
3575   BFD_RELOC_IA64_GPREL22
3576 ENUMX
3577   BFD_RELOC_IA64_GPREL64I
3578 ENUMX
3579   BFD_RELOC_IA64_GPREL32MSB
3580 ENUMX
3581   BFD_RELOC_IA64_GPREL32LSB
3582 ENUMX
3583   BFD_RELOC_IA64_GPREL64MSB
3584 ENUMX
3585   BFD_RELOC_IA64_GPREL64LSB
3586 ENUMX
3587   BFD_RELOC_IA64_LTOFF22
3588 ENUMX
3589   BFD_RELOC_IA64_LTOFF64I
3590 ENUMX
3591   BFD_RELOC_IA64_PLTOFF22
3592 ENUMX
3593   BFD_RELOC_IA64_PLTOFF64I
3594 ENUMX
3595   BFD_RELOC_IA64_PLTOFF64MSB
3596 ENUMX
3597   BFD_RELOC_IA64_PLTOFF64LSB
3598 ENUMX
3599   BFD_RELOC_IA64_FPTR64I
3600 ENUMX
3601   BFD_RELOC_IA64_FPTR32MSB
3602 ENUMX
3603   BFD_RELOC_IA64_FPTR32LSB
3604 ENUMX
3605   BFD_RELOC_IA64_FPTR64MSB
3606 ENUMX
3607   BFD_RELOC_IA64_FPTR64LSB
3608 ENUMX
3609   BFD_RELOC_IA64_PCREL21B
3610 ENUMX
3611   BFD_RELOC_IA64_PCREL21BI
3612 ENUMX
3613   BFD_RELOC_IA64_PCREL21M
3614 ENUMX
3615   BFD_RELOC_IA64_PCREL21F
3616 ENUMX
3617   BFD_RELOC_IA64_PCREL22
3618 ENUMX
3619   BFD_RELOC_IA64_PCREL60B
3620 ENUMX
3621   BFD_RELOC_IA64_PCREL64I
3622 ENUMX
3623   BFD_RELOC_IA64_PCREL32MSB
3624 ENUMX
3625   BFD_RELOC_IA64_PCREL32LSB
3626 ENUMX
3627   BFD_RELOC_IA64_PCREL64MSB
3628 ENUMX
3629   BFD_RELOC_IA64_PCREL64LSB
3630 ENUMX
3631   BFD_RELOC_IA64_LTOFF_FPTR22
3632 ENUMX
3633   BFD_RELOC_IA64_LTOFF_FPTR64I
3634 ENUMX
3635   BFD_RELOC_IA64_LTOFF_FPTR32MSB
3636 ENUMX
3637   BFD_RELOC_IA64_LTOFF_FPTR32LSB
3638 ENUMX
3639   BFD_RELOC_IA64_LTOFF_FPTR64MSB
3640 ENUMX
3641   BFD_RELOC_IA64_LTOFF_FPTR64LSB
3642 ENUMX
3643   BFD_RELOC_IA64_SEGREL32MSB
3644 ENUMX
3645   BFD_RELOC_IA64_SEGREL32LSB
3646 ENUMX
3647   BFD_RELOC_IA64_SEGREL64MSB
3648 ENUMX
3649   BFD_RELOC_IA64_SEGREL64LSB
3650 ENUMX
3651   BFD_RELOC_IA64_SECREL32MSB
3652 ENUMX
3653   BFD_RELOC_IA64_SECREL32LSB
3654 ENUMX
3655   BFD_RELOC_IA64_SECREL64MSB
3656 ENUMX
3657   BFD_RELOC_IA64_SECREL64LSB
3658 ENUMX
3659   BFD_RELOC_IA64_REL32MSB
3660 ENUMX
3661   BFD_RELOC_IA64_REL32LSB
3662 ENUMX
3663   BFD_RELOC_IA64_REL64MSB
3664 ENUMX
3665   BFD_RELOC_IA64_REL64LSB
3666 ENUMX
3667   BFD_RELOC_IA64_LTV32MSB
3668 ENUMX
3669   BFD_RELOC_IA64_LTV32LSB
3670 ENUMX
3671   BFD_RELOC_IA64_LTV64MSB
3672 ENUMX
3673   BFD_RELOC_IA64_LTV64LSB
3674 ENUMX
3675   BFD_RELOC_IA64_IPLTMSB
3676 ENUMX
3677   BFD_RELOC_IA64_IPLTLSB
3678 ENUMX
3679   BFD_RELOC_IA64_COPY
3680 ENUMX
3681   BFD_RELOC_IA64_LTOFF22X
3682 ENUMX
3683   BFD_RELOC_IA64_LDXMOV
3684 ENUMX
3685   BFD_RELOC_IA64_TPREL14
3686 ENUMX
3687   BFD_RELOC_IA64_TPREL22
3688 ENUMX
3689   BFD_RELOC_IA64_TPREL64I
3690 ENUMX
3691   BFD_RELOC_IA64_TPREL64MSB
3692 ENUMX
3693   BFD_RELOC_IA64_TPREL64LSB
3694 ENUMX
3695   BFD_RELOC_IA64_LTOFF_TPREL22
3696 ENUMX
3697   BFD_RELOC_IA64_DTPMOD64MSB
3698 ENUMX
3699   BFD_RELOC_IA64_DTPMOD64LSB
3700 ENUMX
3701   BFD_RELOC_IA64_LTOFF_DTPMOD22
3702 ENUMX
3703   BFD_RELOC_IA64_DTPREL14
3704 ENUMX
3705   BFD_RELOC_IA64_DTPREL22
3706 ENUMX
3707   BFD_RELOC_IA64_DTPREL64I
3708 ENUMX
3709   BFD_RELOC_IA64_DTPREL32MSB
3710 ENUMX
3711   BFD_RELOC_IA64_DTPREL32LSB
3712 ENUMX
3713   BFD_RELOC_IA64_DTPREL64MSB
3714 ENUMX
3715   BFD_RELOC_IA64_DTPREL64LSB
3716 ENUMX
3717   BFD_RELOC_IA64_LTOFF_DTPREL22
3718 ENUMDOC
3719   Intel IA64 Relocations.
3720
3721 ENUM
3722   BFD_RELOC_M68HC11_HI8
3723 ENUMDOC
3724   Motorola 68HC11 reloc.
3725   This is the 8 bit high part of an absolute address.
3726 ENUM
3727   BFD_RELOC_M68HC11_LO8
3728 ENUMDOC
3729   Motorola 68HC11 reloc.
3730   This is the 8 bit low part of an absolute address.
3731 ENUM
3732   BFD_RELOC_M68HC11_3B
3733 ENUMDOC
3734   Motorola 68HC11 reloc.
3735   This is the 3 bit of a value.
3736 ENUM
3737   BFD_RELOC_M68HC11_RL_JUMP
3738 ENUMDOC
3739   Motorola 68HC11 reloc.
3740   This reloc marks the beginning of a jump/call instruction.
3741   It is used for linker relaxation to correctly identify beginning
3742   of instruction and change some branches to use PC-relative
3743   addressing mode.
3744 ENUM
3745   BFD_RELOC_M68HC11_RL_GROUP
3746 ENUMDOC
3747   Motorola 68HC11 reloc.
3748   This reloc marks a group of several instructions that gcc generates
3749   and for which the linker relaxation pass can modify and/or remove
3750   some of them.
3751 ENUM
3752   BFD_RELOC_M68HC11_LO16
3753 ENUMDOC
3754   Motorola 68HC11 reloc.
3755   This is the 16-bit lower part of an address.  It is used for 'call'
3756   instruction to specify the symbol address without any special
3757   transformation (due to memory bank window).
3758 ENUM
3759   BFD_RELOC_M68HC11_PAGE
3760 ENUMDOC
3761   Motorola 68HC11 reloc.
3762   This is a 8-bit reloc that specifies the page number of an address.
3763   It is used by 'call' instruction to specify the page number of
3764   the symbol.
3765 ENUM
3766   BFD_RELOC_M68HC11_24
3767 ENUMDOC
3768   Motorola 68HC11 reloc.
3769   This is a 24-bit reloc that represents the address with a 16-bit
3770   value and a 8-bit page number.  The symbol address is transformed
3771   to follow the 16K memory bank of 68HC12 (seen as mapped in the window).
3772 ENUM
3773   BFD_RELOC_M68HC12_5B
3774 ENUMDOC
3775   Motorola 68HC12 reloc.
3776   This is the 5 bits of a value.
3777
3778 ENUM
3779   BFD_RELOC_16C_NUM08
3780 ENUMX
3781   BFD_RELOC_16C_NUM08_C
3782 ENUMX
3783   BFD_RELOC_16C_NUM16
3784 ENUMX
3785   BFD_RELOC_16C_NUM16_C
3786 ENUMX
3787   BFD_RELOC_16C_NUM32
3788 ENUMX
3789   BFD_RELOC_16C_NUM32_C
3790 ENUMX
3791   BFD_RELOC_16C_DISP04
3792 ENUMX
3793   BFD_RELOC_16C_DISP04_C
3794 ENUMX
3795   BFD_RELOC_16C_DISP08
3796 ENUMX
3797   BFD_RELOC_16C_DISP08_C
3798 ENUMX
3799   BFD_RELOC_16C_DISP16
3800 ENUMX
3801   BFD_RELOC_16C_DISP16_C
3802 ENUMX
3803   BFD_RELOC_16C_DISP24
3804 ENUMX
3805   BFD_RELOC_16C_DISP24_C
3806 ENUMX
3807   BFD_RELOC_16C_DISP24a
3808 ENUMX
3809   BFD_RELOC_16C_DISP24a_C
3810 ENUMX
3811   BFD_RELOC_16C_REG04
3812 ENUMX
3813   BFD_RELOC_16C_REG04_C
3814 ENUMX
3815   BFD_RELOC_16C_REG04a
3816 ENUMX
3817   BFD_RELOC_16C_REG04a_C
3818 ENUMX
3819   BFD_RELOC_16C_REG14
3820 ENUMX
3821   BFD_RELOC_16C_REG14_C
3822 ENUMX
3823   BFD_RELOC_16C_REG16
3824 ENUMX
3825   BFD_RELOC_16C_REG16_C
3826 ENUMX
3827   BFD_RELOC_16C_REG20
3828 ENUMX
3829   BFD_RELOC_16C_REG20_C
3830 ENUMX
3831   BFD_RELOC_16C_ABS20
3832 ENUMX
3833   BFD_RELOC_16C_ABS20_C
3834 ENUMX
3835   BFD_RELOC_16C_ABS24
3836 ENUMX
3837   BFD_RELOC_16C_ABS24_C
3838 ENUMX
3839   BFD_RELOC_16C_IMM04
3840 ENUMX
3841   BFD_RELOC_16C_IMM04_C
3842 ENUMX
3843   BFD_RELOC_16C_IMM16
3844 ENUMX
3845   BFD_RELOC_16C_IMM16_C
3846 ENUMX
3847   BFD_RELOC_16C_IMM20
3848 ENUMX
3849   BFD_RELOC_16C_IMM20_C
3850 ENUMX
3851   BFD_RELOC_16C_IMM24
3852 ENUMX
3853   BFD_RELOC_16C_IMM24_C
3854 ENUMX
3855   BFD_RELOC_16C_IMM32
3856 ENUMX
3857   BFD_RELOC_16C_IMM32_C
3858 ENUMDOC
3859   NS CR16C Relocations.
3860
3861 ENUM
3862   BFD_RELOC_CRIS_BDISP8
3863 ENUMX
3864   BFD_RELOC_CRIS_UNSIGNED_5
3865 ENUMX
3866   BFD_RELOC_CRIS_SIGNED_6
3867 ENUMX
3868   BFD_RELOC_CRIS_UNSIGNED_6
3869 ENUMX
3870   BFD_RELOC_CRIS_UNSIGNED_4
3871 ENUMDOC
3872   These relocs are only used within the CRIS assembler.  They are not
3873   (at present) written to any object files.
3874 ENUM
3875   BFD_RELOC_CRIS_COPY
3876 ENUMX
3877   BFD_RELOC_CRIS_GLOB_DAT
3878 ENUMX
3879   BFD_RELOC_CRIS_JUMP_SLOT
3880 ENUMX
3881   BFD_RELOC_CRIS_RELATIVE
3882 ENUMDOC
3883   Relocs used in ELF shared libraries for CRIS.
3884 ENUM
3885   BFD_RELOC_CRIS_32_GOT
3886 ENUMDOC
3887   32-bit offset to symbol-entry within GOT.
3888 ENUM
3889   BFD_RELOC_CRIS_16_GOT
3890 ENUMDOC
3891   16-bit offset to symbol-entry within GOT.
3892 ENUM
3893   BFD_RELOC_CRIS_32_GOTPLT
3894 ENUMDOC
3895   32-bit offset to symbol-entry within GOT, with PLT handling.
3896 ENUM
3897   BFD_RELOC_CRIS_16_GOTPLT
3898 ENUMDOC
3899   16-bit offset to symbol-entry within GOT, with PLT handling.
3900 ENUM
3901   BFD_RELOC_CRIS_32_GOTREL
3902 ENUMDOC
3903   32-bit offset to symbol, relative to GOT.
3904 ENUM
3905   BFD_RELOC_CRIS_32_PLT_GOTREL
3906 ENUMDOC
3907   32-bit offset to symbol with PLT entry, relative to GOT.
3908 ENUM
3909   BFD_RELOC_CRIS_32_PLT_PCREL
3910 ENUMDOC
3911   32-bit offset to symbol with PLT entry, relative to this relocation.
3912
3913 ENUM
3914   BFD_RELOC_860_COPY
3915 ENUMX
3916   BFD_RELOC_860_GLOB_DAT
3917 ENUMX
3918   BFD_RELOC_860_JUMP_SLOT
3919 ENUMX
3920   BFD_RELOC_860_RELATIVE
3921 ENUMX
3922   BFD_RELOC_860_PC26
3923 ENUMX
3924   BFD_RELOC_860_PLT26
3925 ENUMX
3926   BFD_RELOC_860_PC16
3927 ENUMX
3928   BFD_RELOC_860_LOW0
3929 ENUMX
3930   BFD_RELOC_860_SPLIT0
3931 ENUMX
3932   BFD_RELOC_860_LOW1
3933 ENUMX
3934   BFD_RELOC_860_SPLIT1
3935 ENUMX
3936   BFD_RELOC_860_LOW2
3937 ENUMX
3938   BFD_RELOC_860_SPLIT2
3939 ENUMX
3940   BFD_RELOC_860_LOW3
3941 ENUMX
3942   BFD_RELOC_860_LOGOT0
3943 ENUMX
3944   BFD_RELOC_860_SPGOT0
3945 ENUMX
3946   BFD_RELOC_860_LOGOT1
3947 ENUMX
3948   BFD_RELOC_860_SPGOT1
3949 ENUMX
3950   BFD_RELOC_860_LOGOTOFF0
3951 ENUMX
3952   BFD_RELOC_860_SPGOTOFF0
3953 ENUMX
3954   BFD_RELOC_860_LOGOTOFF1
3955 ENUMX
3956   BFD_RELOC_860_SPGOTOFF1
3957 ENUMX
3958   BFD_RELOC_860_LOGOTOFF2
3959 ENUMX
3960   BFD_RELOC_860_LOGOTOFF3
3961 ENUMX
3962   BFD_RELOC_860_LOPC
3963 ENUMX
3964   BFD_RELOC_860_HIGHADJ
3965 ENUMX
3966   BFD_RELOC_860_HAGOT
3967 ENUMX
3968   BFD_RELOC_860_HAGOTOFF
3969 ENUMX
3970   BFD_RELOC_860_HAPC
3971 ENUMX
3972   BFD_RELOC_860_HIGH
3973 ENUMX
3974   BFD_RELOC_860_HIGOT
3975 ENUMX
3976   BFD_RELOC_860_HIGOTOFF
3977 ENUMDOC
3978   Intel i860 Relocations.
3979
3980 ENUM
3981   BFD_RELOC_OPENRISC_ABS_26
3982 ENUMX
3983   BFD_RELOC_OPENRISC_REL_26
3984 ENUMDOC
3985   OpenRISC Relocations.
3986
3987 ENUM
3988   BFD_RELOC_H8_DIR16A8
3989 ENUMX
3990   BFD_RELOC_H8_DIR16R8
3991 ENUMX
3992   BFD_RELOC_H8_DIR24A8
3993 ENUMX
3994   BFD_RELOC_H8_DIR24R8
3995 ENUMX
3996   BFD_RELOC_H8_DIR32A16
3997 ENUMDOC
3998   H8 elf Relocations.
3999
4000 ENUM
4001   BFD_RELOC_XSTORMY16_REL_12
4002 ENUMX
4003   BFD_RELOC_XSTORMY16_12
4004 ENUMX
4005   BFD_RELOC_XSTORMY16_24
4006 ENUMX
4007   BFD_RELOC_XSTORMY16_FPTR16
4008 ENUMDOC
4009   Sony Xstormy16 Relocations.
4010
4011 ENUM
4012   BFD_RELOC_VAX_GLOB_DAT
4013 ENUMX
4014   BFD_RELOC_VAX_JMP_SLOT
4015 ENUMX
4016   BFD_RELOC_VAX_RELATIVE
4017 ENUMDOC
4018   Relocations used by VAX ELF.
4019
4020 ENUM
4021   BFD_RELOC_MSP430_10_PCREL
4022 ENUMX
4023   BFD_RELOC_MSP430_16_PCREL
4024 ENUMX
4025   BFD_RELOC_MSP430_16
4026 ENUMX
4027   BFD_RELOC_MSP430_16_PCREL_BYTE
4028 ENUMX
4029   BFD_RELOC_MSP430_16_BYTE
4030 ENUMDOC
4031   msp430 specific relocation codes
4032
4033 ENUM
4034   BFD_RELOC_IQ2000_OFFSET_16
4035 ENUMX
4036   BFD_RELOC_IQ2000_OFFSET_21
4037 ENUMX
4038   BFD_RELOC_IQ2000_UHI16
4039 ENUMDOC
4040   IQ2000 Relocations.
4041
4042 ENUM
4043   BFD_RELOC_XTENSA_RTLD
4044 ENUMDOC
4045   Special Xtensa relocation used only by PLT entries in ELF shared
4046   objects to indicate that the runtime linker should set the value
4047   to one of its own internal functions or data structures.
4048 ENUM
4049   BFD_RELOC_XTENSA_GLOB_DAT
4050 ENUMX
4051   BFD_RELOC_XTENSA_JMP_SLOT
4052 ENUMX
4053   BFD_RELOC_XTENSA_RELATIVE
4054 ENUMDOC
4055   Xtensa relocations for ELF shared objects.
4056 ENUM
4057   BFD_RELOC_XTENSA_PLT
4058 ENUMDOC
4059   Xtensa relocation used in ELF object files for symbols that may require
4060   PLT entries.  Otherwise, this is just a generic 32-bit relocation.
4061 ENUM
4062   BFD_RELOC_XTENSA_OP0
4063 ENUMX
4064   BFD_RELOC_XTENSA_OP1
4065 ENUMX
4066   BFD_RELOC_XTENSA_OP2
4067 ENUMDOC
4068   Generic Xtensa relocations.  Only the operand number is encoded
4069   in the relocation.  The details are determined by extracting the
4070   instruction opcode.
4071 ENUM
4072   BFD_RELOC_XTENSA_ASM_EXPAND
4073 ENUMDOC
4074   Xtensa relocation to mark that the assembler expanded the
4075   instructions from an original target.  The expansion size is
4076   encoded in the reloc size.
4077 ENUM
4078   BFD_RELOC_XTENSA_ASM_SIMPLIFY
4079 ENUMDOC
4080   Xtensa relocation to mark that the linker should simplify
4081   assembler-expanded instructions.  This is commonly used
4082   internally by the linker after analysis of a
4083   BFD_RELOC_XTENSA_ASM_EXPAND.
4084
4085 ENDSENUM
4086   BFD_RELOC_UNUSED
4087 CODE_FRAGMENT
4088 .
4089 .typedef enum bfd_reloc_code_real bfd_reloc_code_real_type;
4090 */
4091
4092 /*
4093 FUNCTION
4094         bfd_reloc_type_lookup
4095
4096 SYNOPSIS
4097         reloc_howto_type *bfd_reloc_type_lookup
4098           (bfd *abfd, bfd_reloc_code_real_type code);
4099
4100 DESCRIPTION
4101         Return a pointer to a howto structure which, when
4102         invoked, will perform the relocation @var{code} on data from the
4103         architecture noted.
4104
4105 */
4106
4107 reloc_howto_type *
4108 bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
4109 {
4110   return BFD_SEND (abfd, reloc_type_lookup, (abfd, code));
4111 }
4112
4113 static reloc_howto_type bfd_howto_32 =
4114 HOWTO (0, 00, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "VRT32", FALSE, 0xffffffff, 0xffffffff, TRUE);
4115
4116 /*
4117 INTERNAL_FUNCTION
4118         bfd_default_reloc_type_lookup
4119
4120 SYNOPSIS
4121         reloc_howto_type *bfd_default_reloc_type_lookup
4122           (bfd *abfd, bfd_reloc_code_real_type  code);
4123
4124 DESCRIPTION
4125         Provides a default relocation lookup routine for any architecture.
4126
4127 */
4128
4129 reloc_howto_type *
4130 bfd_default_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
4131 {
4132   switch (code)
4133     {
4134     case BFD_RELOC_CTOR:
4135       /* The type of reloc used in a ctor, which will be as wide as the
4136          address - so either a 64, 32, or 16 bitter.  */
4137       switch (bfd_get_arch_info (abfd)->bits_per_address)
4138         {
4139         case 64:
4140           BFD_FAIL ();
4141         case 32:
4142           return &bfd_howto_32;
4143         case 16:
4144           BFD_FAIL ();
4145         default:
4146           BFD_FAIL ();
4147         }
4148     default:
4149       BFD_FAIL ();
4150     }
4151   return NULL;
4152 }
4153
4154 /*
4155 FUNCTION
4156         bfd_get_reloc_code_name
4157
4158 SYNOPSIS
4159         const char *bfd_get_reloc_code_name (bfd_reloc_code_real_type code);
4160
4161 DESCRIPTION
4162         Provides a printable name for the supplied relocation code.
4163         Useful mainly for printing error messages.
4164 */
4165
4166 const char *
4167 bfd_get_reloc_code_name (bfd_reloc_code_real_type code)
4168 {
4169   if (code > BFD_RELOC_UNUSED)
4170     return 0;
4171   return bfd_reloc_code_real_names[code];
4172 }
4173
4174 /*
4175 INTERNAL_FUNCTION
4176         bfd_generic_relax_section
4177
4178 SYNOPSIS
4179         bfd_boolean bfd_generic_relax_section
4180           (bfd *abfd,
4181            asection *section,
4182            struct bfd_link_info *,
4183            bfd_boolean *);
4184
4185 DESCRIPTION
4186         Provides default handling for relaxing for back ends which
4187         don't do relaxing -- i.e., does nothing except make sure that the
4188         final size of the section is set.
4189 */
4190
4191 bfd_boolean
4192 bfd_generic_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
4193                            asection *section ATTRIBUTE_UNUSED,
4194                            struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
4195                            bfd_boolean *again)
4196 {
4197   /* We're not relaxing the section, so just copy the size info if it's
4198      zero.  Someone else, like bfd_merge_sections, might have set it, so
4199      don't overwrite a non-zero value.  */
4200   if (section->_cooked_size == 0)
4201     section->_cooked_size = section->_raw_size;
4202   *again = FALSE;
4203   return TRUE;
4204 }
4205
4206 /*
4207 INTERNAL_FUNCTION
4208         bfd_generic_gc_sections
4209
4210 SYNOPSIS
4211         bfd_boolean bfd_generic_gc_sections
4212           (bfd *, struct bfd_link_info *);
4213
4214 DESCRIPTION
4215         Provides default handling for relaxing for back ends which
4216         don't do section gc -- i.e., does nothing.
4217 */
4218
4219 bfd_boolean
4220 bfd_generic_gc_sections (bfd *abfd ATTRIBUTE_UNUSED,
4221                          struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4222 {
4223   return TRUE;
4224 }
4225
4226 /*
4227 INTERNAL_FUNCTION
4228         bfd_generic_merge_sections
4229
4230 SYNOPSIS
4231         bfd_boolean bfd_generic_merge_sections
4232           (bfd *, struct bfd_link_info *);
4233
4234 DESCRIPTION
4235         Provides default handling for SEC_MERGE section merging for back ends
4236         which don't have SEC_MERGE support -- i.e., does nothing.
4237 */
4238
4239 bfd_boolean
4240 bfd_generic_merge_sections (bfd *abfd ATTRIBUTE_UNUSED,
4241                             struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4242 {
4243   return TRUE;
4244 }
4245
4246 /*
4247 INTERNAL_FUNCTION
4248         bfd_generic_get_relocated_section_contents
4249
4250 SYNOPSIS
4251         bfd_byte *bfd_generic_get_relocated_section_contents
4252           (bfd *abfd,
4253            struct bfd_link_info *link_info,
4254            struct bfd_link_order *link_order,
4255            bfd_byte *data,
4256            bfd_boolean relocatable,
4257            asymbol **symbols);
4258
4259 DESCRIPTION
4260         Provides default handling of relocation effort for back ends
4261         which can't be bothered to do it efficiently.
4262
4263 */
4264
4265 bfd_byte *
4266 bfd_generic_get_relocated_section_contents (bfd *abfd,
4267                                             struct bfd_link_info *link_info,
4268                                             struct bfd_link_order *link_order,
4269                                             bfd_byte *data,
4270                                             bfd_boolean relocatable,
4271                                             asymbol **symbols)
4272 {
4273   /* Get enough memory to hold the stuff.  */
4274   bfd *input_bfd = link_order->u.indirect.section->owner;
4275   asection *input_section = link_order->u.indirect.section;
4276
4277   long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
4278   arelent **reloc_vector = NULL;
4279   long reloc_count;
4280
4281   if (reloc_size < 0)
4282     goto error_return;
4283
4284   reloc_vector = bfd_malloc (reloc_size);
4285   if (reloc_vector == NULL && reloc_size != 0)
4286     goto error_return;
4287
4288   /* Read in the section.  */
4289   if (!bfd_get_section_contents (input_bfd,
4290                                  input_section,
4291                                  data,
4292                                  0,
4293                                  input_section->_raw_size))
4294     goto error_return;
4295
4296   /* Don't set input_section->_cooked_size here.  The caller has set
4297      _cooked_size or called bfd_relax_section, which sets _cooked_size.
4298      Despite using this generic relocation function, some targets perform
4299      target-specific relaxation or string merging, which happens before
4300      this function is called.  We do not want to clobber the _cooked_size
4301      they computed.  */
4302
4303   input_section->reloc_done = TRUE;
4304
4305   reloc_count = bfd_canonicalize_reloc (input_bfd,
4306                                         input_section,
4307                                         reloc_vector,
4308                                         symbols);
4309   if (reloc_count < 0)
4310     goto error_return;
4311
4312   if (reloc_count > 0)
4313     {
4314       arelent **parent;
4315       for (parent = reloc_vector; *parent != NULL; parent++)
4316         {
4317           char *error_message = NULL;
4318           bfd_reloc_status_type r =
4319             bfd_perform_relocation (input_bfd,
4320                                     *parent,
4321                                     data,
4322                                     input_section,
4323                                     relocatable ? abfd : NULL,
4324                                     &error_message);
4325
4326           if (relocatable)
4327             {
4328               asection *os = input_section->output_section;
4329
4330               /* A partial link, so keep the relocs.  */
4331               os->orelocation[os->reloc_count] = *parent;
4332               os->reloc_count++;
4333             }
4334
4335           if (r != bfd_reloc_ok)
4336             {
4337               switch (r)
4338                 {
4339                 case bfd_reloc_undefined:
4340                   if (!((*link_info->callbacks->undefined_symbol)
4341                         (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4342                          input_bfd, input_section, (*parent)->address,
4343                          TRUE)))
4344                     goto error_return;
4345                   break;
4346                 case bfd_reloc_dangerous:
4347                   BFD_ASSERT (error_message != NULL);
4348                   if (!((*link_info->callbacks->reloc_dangerous)
4349                         (link_info, error_message, input_bfd, input_section,
4350                          (*parent)->address)))
4351                     goto error_return;
4352                   break;
4353                 case bfd_reloc_overflow:
4354                   if (!((*link_info->callbacks->reloc_overflow)
4355                         (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4356                          (*parent)->howto->name, (*parent)->addend,
4357                          input_bfd, input_section, (*parent)->address)))
4358                     goto error_return;
4359                   break;
4360                 case bfd_reloc_outofrange:
4361                 default:
4362                   abort ();
4363                   break;
4364                 }
4365
4366             }
4367         }
4368     }
4369   if (reloc_vector != NULL)
4370     free (reloc_vector);
4371   return data;
4372
4373 error_return:
4374   if (reloc_vector != NULL)
4375     free (reloc_vector);
4376   return NULL;
4377 }