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_GOT_PCREL
1651 ENUMX
1652   BFD_RELOC_16_GOT_PCREL
1653 ENUMX
1654   BFD_RELOC_8_GOT_PCREL
1655 ENUMX
1656   BFD_RELOC_32_GOTOFF
1657 ENUMX
1658   BFD_RELOC_16_GOTOFF
1659 ENUMX
1660   BFD_RELOC_LO16_GOTOFF
1661 ENUMX
1662   BFD_RELOC_HI16_GOTOFF
1663 ENUMX
1664   BFD_RELOC_HI16_S_GOTOFF
1665 ENUMX
1666   BFD_RELOC_8_GOTOFF
1667 ENUMX
1668   BFD_RELOC_64_PLT_PCREL
1669 ENUMX
1670   BFD_RELOC_32_PLT_PCREL
1671 ENUMX
1672   BFD_RELOC_24_PLT_PCREL
1673 ENUMX
1674   BFD_RELOC_16_PLT_PCREL
1675 ENUMX
1676   BFD_RELOC_8_PLT_PCREL
1677 ENUMX
1678   BFD_RELOC_64_PLTOFF
1679 ENUMX
1680   BFD_RELOC_32_PLTOFF
1681 ENUMX
1682   BFD_RELOC_16_PLTOFF
1683 ENUMX
1684   BFD_RELOC_LO16_PLTOFF
1685 ENUMX
1686   BFD_RELOC_HI16_PLTOFF
1687 ENUMX
1688   BFD_RELOC_HI16_S_PLTOFF
1689 ENUMX
1690   BFD_RELOC_8_PLTOFF
1691 ENUMDOC
1692   For ELF.
1693
1694 ENUM
1695   BFD_RELOC_68K_GLOB_DAT
1696 ENUMX
1697   BFD_RELOC_68K_JMP_SLOT
1698 ENUMX
1699   BFD_RELOC_68K_RELATIVE
1700 ENUMDOC
1701   Relocations used by 68K ELF.
1702
1703 ENUM
1704   BFD_RELOC_32_BASEREL
1705 ENUMX
1706   BFD_RELOC_16_BASEREL
1707 ENUMX
1708   BFD_RELOC_LO16_BASEREL
1709 ENUMX
1710   BFD_RELOC_HI16_BASEREL
1711 ENUMX
1712   BFD_RELOC_HI16_S_BASEREL
1713 ENUMX
1714   BFD_RELOC_8_BASEREL
1715 ENUMX
1716   BFD_RELOC_RVA
1717 ENUMDOC
1718   Linkage-table relative.
1719
1720 ENUM
1721   BFD_RELOC_8_FFnn
1722 ENUMDOC
1723   Absolute 8-bit relocation, but used to form an address like 0xFFnn.
1724
1725 ENUM
1726   BFD_RELOC_32_PCREL_S2
1727 ENUMX
1728   BFD_RELOC_16_PCREL_S2
1729 ENUMX
1730   BFD_RELOC_23_PCREL_S2
1731 ENUMDOC
1732   These PC-relative relocations are stored as word displacements --
1733 i.e., byte displacements shifted right two bits.  The 30-bit word
1734 displacement (<<32_PCREL_S2>> -- 32 bits, shifted 2) is used on the
1735 SPARC.  (SPARC tools generally refer to this as <<WDISP30>>.)  The
1736 signed 16-bit displacement is used on the MIPS, and the 23-bit
1737 displacement is used on the Alpha.
1738
1739 ENUM
1740   BFD_RELOC_HI22
1741 ENUMX
1742   BFD_RELOC_LO10
1743 ENUMDOC
1744   High 22 bits and low 10 bits of 32-bit value, placed into lower bits of
1745 the target word.  These are used on the SPARC.
1746
1747 ENUM
1748   BFD_RELOC_GPREL16
1749 ENUMX
1750   BFD_RELOC_GPREL32
1751 ENUMDOC
1752   For systems that allocate a Global Pointer register, these are
1753 displacements off that register.  These relocation types are
1754 handled specially, because the value the register will have is
1755 decided relatively late.
1756
1757 ENUM
1758   BFD_RELOC_I960_CALLJ
1759 ENUMDOC
1760   Reloc types used for i960/b.out.
1761
1762 ENUM
1763   BFD_RELOC_NONE
1764 ENUMX
1765   BFD_RELOC_SPARC_WDISP22
1766 ENUMX
1767   BFD_RELOC_SPARC22
1768 ENUMX
1769   BFD_RELOC_SPARC13
1770 ENUMX
1771   BFD_RELOC_SPARC_GOT10
1772 ENUMX
1773   BFD_RELOC_SPARC_GOT13
1774 ENUMX
1775   BFD_RELOC_SPARC_GOT22
1776 ENUMX
1777   BFD_RELOC_SPARC_PC10
1778 ENUMX
1779   BFD_RELOC_SPARC_PC22
1780 ENUMX
1781   BFD_RELOC_SPARC_WPLT30
1782 ENUMX
1783   BFD_RELOC_SPARC_COPY
1784 ENUMX
1785   BFD_RELOC_SPARC_GLOB_DAT
1786 ENUMX
1787   BFD_RELOC_SPARC_JMP_SLOT
1788 ENUMX
1789   BFD_RELOC_SPARC_RELATIVE
1790 ENUMX
1791   BFD_RELOC_SPARC_UA16
1792 ENUMX
1793   BFD_RELOC_SPARC_UA32
1794 ENUMX
1795   BFD_RELOC_SPARC_UA64
1796 ENUMDOC
1797   SPARC ELF relocations.  There is probably some overlap with other
1798   relocation types already defined.
1799
1800 ENUM
1801   BFD_RELOC_SPARC_BASE13
1802 ENUMX
1803   BFD_RELOC_SPARC_BASE22
1804 ENUMDOC
1805   I think these are specific to SPARC a.out (e.g., Sun 4).
1806
1807 ENUMEQ
1808   BFD_RELOC_SPARC_64
1809   BFD_RELOC_64
1810 ENUMX
1811   BFD_RELOC_SPARC_10
1812 ENUMX
1813   BFD_RELOC_SPARC_11
1814 ENUMX
1815   BFD_RELOC_SPARC_OLO10
1816 ENUMX
1817   BFD_RELOC_SPARC_HH22
1818 ENUMX
1819   BFD_RELOC_SPARC_HM10
1820 ENUMX
1821   BFD_RELOC_SPARC_LM22
1822 ENUMX
1823   BFD_RELOC_SPARC_PC_HH22
1824 ENUMX
1825   BFD_RELOC_SPARC_PC_HM10
1826 ENUMX
1827   BFD_RELOC_SPARC_PC_LM22
1828 ENUMX
1829   BFD_RELOC_SPARC_WDISP16
1830 ENUMX
1831   BFD_RELOC_SPARC_WDISP19
1832 ENUMX
1833   BFD_RELOC_SPARC_7
1834 ENUMX
1835   BFD_RELOC_SPARC_6
1836 ENUMX
1837   BFD_RELOC_SPARC_5
1838 ENUMEQX
1839   BFD_RELOC_SPARC_DISP64
1840   BFD_RELOC_64_PCREL
1841 ENUMX
1842   BFD_RELOC_SPARC_PLT32
1843 ENUMX
1844   BFD_RELOC_SPARC_PLT64
1845 ENUMX
1846   BFD_RELOC_SPARC_HIX22
1847 ENUMX
1848   BFD_RELOC_SPARC_LOX10
1849 ENUMX
1850   BFD_RELOC_SPARC_H44
1851 ENUMX
1852   BFD_RELOC_SPARC_M44
1853 ENUMX
1854   BFD_RELOC_SPARC_L44
1855 ENUMX
1856   BFD_RELOC_SPARC_REGISTER
1857 ENUMDOC
1858   SPARC64 relocations
1859
1860 ENUM
1861   BFD_RELOC_SPARC_REV32
1862 ENUMDOC
1863   SPARC little endian relocation
1864 ENUM
1865   BFD_RELOC_SPARC_TLS_GD_HI22
1866 ENUMX
1867   BFD_RELOC_SPARC_TLS_GD_LO10
1868 ENUMX
1869   BFD_RELOC_SPARC_TLS_GD_ADD
1870 ENUMX
1871   BFD_RELOC_SPARC_TLS_GD_CALL
1872 ENUMX
1873   BFD_RELOC_SPARC_TLS_LDM_HI22
1874 ENUMX
1875   BFD_RELOC_SPARC_TLS_LDM_LO10
1876 ENUMX
1877   BFD_RELOC_SPARC_TLS_LDM_ADD
1878 ENUMX
1879   BFD_RELOC_SPARC_TLS_LDM_CALL
1880 ENUMX
1881   BFD_RELOC_SPARC_TLS_LDO_HIX22
1882 ENUMX
1883   BFD_RELOC_SPARC_TLS_LDO_LOX10
1884 ENUMX
1885   BFD_RELOC_SPARC_TLS_LDO_ADD
1886 ENUMX
1887   BFD_RELOC_SPARC_TLS_IE_HI22
1888 ENUMX
1889   BFD_RELOC_SPARC_TLS_IE_LO10
1890 ENUMX
1891   BFD_RELOC_SPARC_TLS_IE_LD
1892 ENUMX
1893   BFD_RELOC_SPARC_TLS_IE_LDX
1894 ENUMX
1895   BFD_RELOC_SPARC_TLS_IE_ADD
1896 ENUMX
1897   BFD_RELOC_SPARC_TLS_LE_HIX22
1898 ENUMX
1899   BFD_RELOC_SPARC_TLS_LE_LOX10
1900 ENUMX
1901   BFD_RELOC_SPARC_TLS_DTPMOD32
1902 ENUMX
1903   BFD_RELOC_SPARC_TLS_DTPMOD64
1904 ENUMX
1905   BFD_RELOC_SPARC_TLS_DTPOFF32
1906 ENUMX
1907   BFD_RELOC_SPARC_TLS_DTPOFF64
1908 ENUMX
1909   BFD_RELOC_SPARC_TLS_TPOFF32
1910 ENUMX
1911   BFD_RELOC_SPARC_TLS_TPOFF64
1912 ENUMDOC
1913   SPARC TLS relocations
1914
1915 ENUM
1916   BFD_RELOC_ALPHA_GPDISP_HI16
1917 ENUMDOC
1918   Alpha ECOFF and ELF relocations.  Some of these treat the symbol or
1919      "addend" in some special way.
1920   For GPDISP_HI16 ("gpdisp") relocations, the symbol is ignored when
1921      writing; when reading, it will be the absolute section symbol.  The
1922      addend is the displacement in bytes of the "lda" instruction from
1923      the "ldah" instruction (which is at the address of this reloc).
1924 ENUM
1925   BFD_RELOC_ALPHA_GPDISP_LO16
1926 ENUMDOC
1927   For GPDISP_LO16 ("ignore") relocations, the symbol is handled as
1928      with GPDISP_HI16 relocs.  The addend is ignored when writing the
1929      relocations out, and is filled in with the file's GP value on
1930      reading, for convenience.
1931
1932 ENUM
1933   BFD_RELOC_ALPHA_GPDISP
1934 ENUMDOC
1935   The ELF GPDISP relocation is exactly the same as the GPDISP_HI16
1936      relocation except that there is no accompanying GPDISP_LO16
1937      relocation.
1938
1939 ENUM
1940   BFD_RELOC_ALPHA_LITERAL
1941 ENUMX
1942   BFD_RELOC_ALPHA_ELF_LITERAL
1943 ENUMX
1944   BFD_RELOC_ALPHA_LITUSE
1945 ENUMDOC
1946   The Alpha LITERAL/LITUSE relocs are produced by a symbol reference;
1947      the assembler turns it into a LDQ instruction to load the address of
1948      the symbol, and then fills in a register in the real instruction.
1949
1950      The LITERAL reloc, at the LDQ instruction, refers to the .lita
1951      section symbol.  The addend is ignored when writing, but is filled
1952      in with the file's GP value on reading, for convenience, as with the
1953      GPDISP_LO16 reloc.
1954
1955      The ELF_LITERAL reloc is somewhere between 16_GOTOFF and GPDISP_LO16.
1956      It should refer to the symbol to be referenced, as with 16_GOTOFF,
1957      but it generates output not based on the position within the .got
1958      section, but relative to the GP value chosen for the file during the
1959      final link stage.
1960
1961      The LITUSE reloc, on the instruction using the loaded address, gives
1962      information to the linker that it might be able to use to optimize
1963      away some literal section references.  The symbol is ignored (read
1964      as the absolute section symbol), and the "addend" indicates the type
1965      of instruction using the register:
1966               1 - "memory" fmt insn
1967               2 - byte-manipulation (byte offset reg)
1968               3 - jsr (target of branch)
1969
1970 ENUM
1971   BFD_RELOC_ALPHA_HINT
1972 ENUMDOC
1973   The HINT relocation indicates a value that should be filled into the
1974      "hint" field of a jmp/jsr/ret instruction, for possible branch-
1975      prediction logic which may be provided on some processors.
1976
1977 ENUM
1978   BFD_RELOC_ALPHA_LINKAGE
1979 ENUMDOC
1980   The LINKAGE relocation outputs a linkage pair in the object file,
1981      which is filled by the linker.
1982
1983 ENUM
1984   BFD_RELOC_ALPHA_CODEADDR
1985 ENUMDOC
1986   The CODEADDR relocation outputs a STO_CA in the object file,
1987      which is filled by the linker.
1988
1989 ENUM
1990   BFD_RELOC_ALPHA_GPREL_HI16
1991 ENUMX
1992   BFD_RELOC_ALPHA_GPREL_LO16
1993 ENUMDOC
1994   The GPREL_HI/LO relocations together form a 32-bit offset from the
1995      GP register.
1996
1997 ENUM
1998   BFD_RELOC_ALPHA_BRSGP
1999 ENUMDOC
2000   Like BFD_RELOC_23_PCREL_S2, except that the source and target must
2001   share a common GP, and the target address is adjusted for
2002   STO_ALPHA_STD_GPLOAD.
2003
2004 ENUM
2005   BFD_RELOC_ALPHA_TLSGD
2006 ENUMX
2007   BFD_RELOC_ALPHA_TLSLDM
2008 ENUMX
2009   BFD_RELOC_ALPHA_DTPMOD64
2010 ENUMX
2011   BFD_RELOC_ALPHA_GOTDTPREL16
2012 ENUMX
2013   BFD_RELOC_ALPHA_DTPREL64
2014 ENUMX
2015   BFD_RELOC_ALPHA_DTPREL_HI16
2016 ENUMX
2017   BFD_RELOC_ALPHA_DTPREL_LO16
2018 ENUMX
2019   BFD_RELOC_ALPHA_DTPREL16
2020 ENUMX
2021   BFD_RELOC_ALPHA_GOTTPREL16
2022 ENUMX
2023   BFD_RELOC_ALPHA_TPREL64
2024 ENUMX
2025   BFD_RELOC_ALPHA_TPREL_HI16
2026 ENUMX
2027   BFD_RELOC_ALPHA_TPREL_LO16
2028 ENUMX
2029   BFD_RELOC_ALPHA_TPREL16
2030 ENUMDOC
2031   Alpha thread-local storage relocations.
2032
2033 ENUM
2034   BFD_RELOC_MIPS_JMP
2035 ENUMDOC
2036   Bits 27..2 of the relocation address shifted right 2 bits;
2037      simple reloc otherwise.
2038
2039 ENUM
2040   BFD_RELOC_MIPS16_JMP
2041 ENUMDOC
2042   The MIPS16 jump instruction.
2043
2044 ENUM
2045   BFD_RELOC_MIPS16_GPREL
2046 ENUMDOC
2047   MIPS16 GP relative reloc.
2048
2049 ENUM
2050   BFD_RELOC_HI16
2051 ENUMDOC
2052   High 16 bits of 32-bit value; simple reloc.
2053 ENUM
2054   BFD_RELOC_HI16_S
2055 ENUMDOC
2056   High 16 bits of 32-bit value but the low 16 bits will be sign
2057      extended and added to form the final result.  If the low 16
2058      bits form a negative number, we need to add one to the high value
2059      to compensate for the borrow when the low bits are added.
2060 ENUM
2061   BFD_RELOC_LO16
2062 ENUMDOC
2063   Low 16 bits.
2064 ENUM
2065   BFD_RELOC_PCREL_HI16_S
2066 ENUMDOC
2067   Like BFD_RELOC_HI16_S, but PC relative.
2068 ENUM
2069   BFD_RELOC_PCREL_LO16
2070 ENUMDOC
2071   Like BFD_RELOC_LO16, but PC relative.
2072
2073 ENUM
2074   BFD_RELOC_MIPS_LITERAL
2075 ENUMDOC
2076   Relocation against a MIPS literal section.
2077
2078 ENUM
2079   BFD_RELOC_MIPS_GOT16
2080 ENUMX
2081   BFD_RELOC_MIPS_CALL16
2082 ENUMX
2083   BFD_RELOC_MIPS_GOT_HI16
2084 ENUMX
2085   BFD_RELOC_MIPS_GOT_LO16
2086 ENUMX
2087   BFD_RELOC_MIPS_CALL_HI16
2088 ENUMX
2089   BFD_RELOC_MIPS_CALL_LO16
2090 ENUMX
2091   BFD_RELOC_MIPS_SUB
2092 ENUMX
2093   BFD_RELOC_MIPS_GOT_PAGE
2094 ENUMX
2095   BFD_RELOC_MIPS_GOT_OFST
2096 ENUMX
2097   BFD_RELOC_MIPS_GOT_DISP
2098 ENUMX
2099   BFD_RELOC_MIPS_SHIFT5
2100 ENUMX
2101   BFD_RELOC_MIPS_SHIFT6
2102 ENUMX
2103   BFD_RELOC_MIPS_INSERT_A
2104 ENUMX
2105   BFD_RELOC_MIPS_INSERT_B
2106 ENUMX
2107   BFD_RELOC_MIPS_DELETE
2108 ENUMX
2109   BFD_RELOC_MIPS_HIGHEST
2110 ENUMX
2111   BFD_RELOC_MIPS_HIGHER
2112 ENUMX
2113   BFD_RELOC_MIPS_SCN_DISP
2114 ENUMX
2115   BFD_RELOC_MIPS_REL16
2116 ENUMX
2117   BFD_RELOC_MIPS_RELGOT
2118 ENUMX
2119   BFD_RELOC_MIPS_JALR
2120 ENUMDOC
2121   MIPS ELF relocations.
2122 COMMENT
2123
2124 ENUM
2125   BFD_RELOC_FRV_LABEL16
2126 ENUMX
2127   BFD_RELOC_FRV_LABEL24
2128 ENUMX
2129   BFD_RELOC_FRV_LO16
2130 ENUMX
2131   BFD_RELOC_FRV_HI16
2132 ENUMX
2133   BFD_RELOC_FRV_GPREL12
2134 ENUMX
2135   BFD_RELOC_FRV_GPRELU12
2136 ENUMX
2137   BFD_RELOC_FRV_GPREL32
2138 ENUMX
2139   BFD_RELOC_FRV_GPRELHI
2140 ENUMX
2141   BFD_RELOC_FRV_GPRELLO
2142 ENUMX
2143   BFD_RELOC_FRV_GOT12
2144 ENUMX
2145   BFD_RELOC_FRV_GOTHI
2146 ENUMX
2147   BFD_RELOC_FRV_GOTLO
2148 ENUMX
2149   BFD_RELOC_FRV_FUNCDESC
2150 ENUMX
2151   BFD_RELOC_FRV_FUNCDESC_GOT12
2152 ENUMX
2153   BFD_RELOC_FRV_FUNCDESC_GOTHI
2154 ENUMX
2155   BFD_RELOC_FRV_FUNCDESC_GOTLO
2156 ENUMX
2157   BFD_RELOC_FRV_FUNCDESC_VALUE
2158 ENUMX
2159   BFD_RELOC_FRV_FUNCDESC_GOTOFF12
2160 ENUMX
2161   BFD_RELOC_FRV_FUNCDESC_GOTOFFHI
2162 ENUMX
2163   BFD_RELOC_FRV_FUNCDESC_GOTOFFLO
2164 ENUMX
2165   BFD_RELOC_FRV_GOTOFF12
2166 ENUMX
2167   BFD_RELOC_FRV_GOTOFFHI
2168 ENUMX
2169   BFD_RELOC_FRV_GOTOFFLO
2170 ENUMDOC
2171   Fujitsu Frv Relocations.
2172 COMMENT
2173
2174 ENUM
2175   BFD_RELOC_MN10300_GOTOFF24
2176 ENUMDOC
2177   This is a 24bit GOT-relative reloc for the mn10300.
2178 ENUM
2179   BFD_RELOC_MN10300_GOT32
2180 ENUMDOC
2181   This is a 32bit GOT-relative reloc for the mn10300, offset by two bytes
2182   in the instruction.
2183 ENUM
2184   BFD_RELOC_MN10300_GOT24
2185 ENUMDOC
2186   This is a 24bit GOT-relative reloc for the mn10300, offset by two bytes
2187   in the instruction.
2188 ENUM
2189   BFD_RELOC_MN10300_GOT16
2190 ENUMDOC
2191   This is a 16bit GOT-relative reloc for the mn10300, offset by two bytes
2192   in the instruction.
2193 ENUM
2194   BFD_RELOC_MN10300_COPY
2195 ENUMDOC
2196   Copy symbol at runtime.
2197 ENUM
2198   BFD_RELOC_MN10300_GLOB_DAT
2199 ENUMDOC
2200   Create GOT entry.
2201 ENUM
2202   BFD_RELOC_MN10300_JMP_SLOT
2203 ENUMDOC
2204   Create PLT entry.
2205 ENUM
2206   BFD_RELOC_MN10300_RELATIVE
2207 ENUMDOC
2208   Adjust by program base.
2209 COMMENT
2210
2211 ENUM
2212   BFD_RELOC_386_GOT32
2213 ENUMX
2214   BFD_RELOC_386_PLT32
2215 ENUMX
2216   BFD_RELOC_386_COPY
2217 ENUMX
2218   BFD_RELOC_386_GLOB_DAT
2219 ENUMX
2220   BFD_RELOC_386_JUMP_SLOT
2221 ENUMX
2222   BFD_RELOC_386_RELATIVE
2223 ENUMX
2224   BFD_RELOC_386_GOTOFF
2225 ENUMX
2226   BFD_RELOC_386_GOTPC
2227 ENUMX
2228   BFD_RELOC_386_TLS_TPOFF
2229 ENUMX
2230   BFD_RELOC_386_TLS_IE
2231 ENUMX
2232   BFD_RELOC_386_TLS_GOTIE
2233 ENUMX
2234   BFD_RELOC_386_TLS_LE
2235 ENUMX
2236   BFD_RELOC_386_TLS_GD
2237 ENUMX
2238   BFD_RELOC_386_TLS_LDM
2239 ENUMX
2240   BFD_RELOC_386_TLS_LDO_32
2241 ENUMX
2242   BFD_RELOC_386_TLS_IE_32
2243 ENUMX
2244   BFD_RELOC_386_TLS_LE_32
2245 ENUMX
2246   BFD_RELOC_386_TLS_DTPMOD32
2247 ENUMX
2248   BFD_RELOC_386_TLS_DTPOFF32
2249 ENUMX
2250   BFD_RELOC_386_TLS_TPOFF32
2251 ENUMDOC
2252   i386/elf relocations
2253
2254 ENUM
2255   BFD_RELOC_X86_64_GOT32
2256 ENUMX
2257   BFD_RELOC_X86_64_PLT32
2258 ENUMX
2259   BFD_RELOC_X86_64_COPY
2260 ENUMX
2261   BFD_RELOC_X86_64_GLOB_DAT
2262 ENUMX
2263   BFD_RELOC_X86_64_JUMP_SLOT
2264 ENUMX
2265   BFD_RELOC_X86_64_RELATIVE
2266 ENUMX
2267   BFD_RELOC_X86_64_GOTPCREL
2268 ENUMX
2269   BFD_RELOC_X86_64_32S
2270 ENUMX
2271   BFD_RELOC_X86_64_DTPMOD64
2272 ENUMX
2273   BFD_RELOC_X86_64_DTPOFF64
2274 ENUMX
2275   BFD_RELOC_X86_64_TPOFF64
2276 ENUMX
2277   BFD_RELOC_X86_64_TLSGD
2278 ENUMX
2279   BFD_RELOC_X86_64_TLSLD
2280 ENUMX
2281   BFD_RELOC_X86_64_DTPOFF32
2282 ENUMX
2283   BFD_RELOC_X86_64_GOTTPOFF
2284 ENUMX
2285   BFD_RELOC_X86_64_TPOFF32
2286 ENUMDOC
2287   x86-64/elf relocations
2288
2289 ENUM
2290   BFD_RELOC_NS32K_IMM_8
2291 ENUMX
2292   BFD_RELOC_NS32K_IMM_16
2293 ENUMX
2294   BFD_RELOC_NS32K_IMM_32
2295 ENUMX
2296   BFD_RELOC_NS32K_IMM_8_PCREL
2297 ENUMX
2298   BFD_RELOC_NS32K_IMM_16_PCREL
2299 ENUMX
2300   BFD_RELOC_NS32K_IMM_32_PCREL
2301 ENUMX
2302   BFD_RELOC_NS32K_DISP_8
2303 ENUMX
2304   BFD_RELOC_NS32K_DISP_16
2305 ENUMX
2306   BFD_RELOC_NS32K_DISP_32
2307 ENUMX
2308   BFD_RELOC_NS32K_DISP_8_PCREL
2309 ENUMX
2310   BFD_RELOC_NS32K_DISP_16_PCREL
2311 ENUMX
2312   BFD_RELOC_NS32K_DISP_32_PCREL
2313 ENUMDOC
2314   ns32k relocations
2315
2316 ENUM
2317   BFD_RELOC_PDP11_DISP_8_PCREL
2318 ENUMX
2319   BFD_RELOC_PDP11_DISP_6_PCREL
2320 ENUMDOC
2321   PDP11 relocations
2322
2323 ENUM
2324   BFD_RELOC_PJ_CODE_HI16
2325 ENUMX
2326   BFD_RELOC_PJ_CODE_LO16
2327 ENUMX
2328   BFD_RELOC_PJ_CODE_DIR16
2329 ENUMX
2330   BFD_RELOC_PJ_CODE_DIR32
2331 ENUMX
2332   BFD_RELOC_PJ_CODE_REL16
2333 ENUMX
2334   BFD_RELOC_PJ_CODE_REL32
2335 ENUMDOC
2336   Picojava relocs.  Not all of these appear in object files.
2337
2338 ENUM
2339   BFD_RELOC_PPC_B26
2340 ENUMX
2341   BFD_RELOC_PPC_BA26
2342 ENUMX
2343   BFD_RELOC_PPC_TOC16
2344 ENUMX
2345   BFD_RELOC_PPC_B16
2346 ENUMX
2347   BFD_RELOC_PPC_B16_BRTAKEN
2348 ENUMX
2349   BFD_RELOC_PPC_B16_BRNTAKEN
2350 ENUMX
2351   BFD_RELOC_PPC_BA16
2352 ENUMX
2353   BFD_RELOC_PPC_BA16_BRTAKEN
2354 ENUMX
2355   BFD_RELOC_PPC_BA16_BRNTAKEN
2356 ENUMX
2357   BFD_RELOC_PPC_COPY
2358 ENUMX
2359   BFD_RELOC_PPC_GLOB_DAT
2360 ENUMX
2361   BFD_RELOC_PPC_JMP_SLOT
2362 ENUMX
2363   BFD_RELOC_PPC_RELATIVE
2364 ENUMX
2365   BFD_RELOC_PPC_LOCAL24PC
2366 ENUMX
2367   BFD_RELOC_PPC_EMB_NADDR32
2368 ENUMX
2369   BFD_RELOC_PPC_EMB_NADDR16
2370 ENUMX
2371   BFD_RELOC_PPC_EMB_NADDR16_LO
2372 ENUMX
2373   BFD_RELOC_PPC_EMB_NADDR16_HI
2374 ENUMX
2375   BFD_RELOC_PPC_EMB_NADDR16_HA
2376 ENUMX
2377   BFD_RELOC_PPC_EMB_SDAI16
2378 ENUMX
2379   BFD_RELOC_PPC_EMB_SDA2I16
2380 ENUMX
2381   BFD_RELOC_PPC_EMB_SDA2REL
2382 ENUMX
2383   BFD_RELOC_PPC_EMB_SDA21
2384 ENUMX
2385   BFD_RELOC_PPC_EMB_MRKREF
2386 ENUMX
2387   BFD_RELOC_PPC_EMB_RELSEC16
2388 ENUMX
2389   BFD_RELOC_PPC_EMB_RELST_LO
2390 ENUMX
2391   BFD_RELOC_PPC_EMB_RELST_HI
2392 ENUMX
2393   BFD_RELOC_PPC_EMB_RELST_HA
2394 ENUMX
2395   BFD_RELOC_PPC_EMB_BIT_FLD
2396 ENUMX
2397   BFD_RELOC_PPC_EMB_RELSDA
2398 ENUMX
2399   BFD_RELOC_PPC64_HIGHER
2400 ENUMX
2401   BFD_RELOC_PPC64_HIGHER_S
2402 ENUMX
2403   BFD_RELOC_PPC64_HIGHEST
2404 ENUMX
2405   BFD_RELOC_PPC64_HIGHEST_S
2406 ENUMX
2407   BFD_RELOC_PPC64_TOC16_LO
2408 ENUMX
2409   BFD_RELOC_PPC64_TOC16_HI
2410 ENUMX
2411   BFD_RELOC_PPC64_TOC16_HA
2412 ENUMX
2413   BFD_RELOC_PPC64_TOC
2414 ENUMX
2415   BFD_RELOC_PPC64_PLTGOT16
2416 ENUMX
2417   BFD_RELOC_PPC64_PLTGOT16_LO
2418 ENUMX
2419   BFD_RELOC_PPC64_PLTGOT16_HI
2420 ENUMX
2421   BFD_RELOC_PPC64_PLTGOT16_HA
2422 ENUMX
2423   BFD_RELOC_PPC64_ADDR16_DS
2424 ENUMX
2425   BFD_RELOC_PPC64_ADDR16_LO_DS
2426 ENUMX
2427   BFD_RELOC_PPC64_GOT16_DS
2428 ENUMX
2429   BFD_RELOC_PPC64_GOT16_LO_DS
2430 ENUMX
2431   BFD_RELOC_PPC64_PLT16_LO_DS
2432 ENUMX
2433   BFD_RELOC_PPC64_SECTOFF_DS
2434 ENUMX
2435   BFD_RELOC_PPC64_SECTOFF_LO_DS
2436 ENUMX
2437   BFD_RELOC_PPC64_TOC16_DS
2438 ENUMX
2439   BFD_RELOC_PPC64_TOC16_LO_DS
2440 ENUMX
2441   BFD_RELOC_PPC64_PLTGOT16_DS
2442 ENUMX
2443   BFD_RELOC_PPC64_PLTGOT16_LO_DS
2444 ENUMDOC
2445   Power(rs6000) and PowerPC relocations.
2446
2447 ENUM
2448   BFD_RELOC_PPC_TLS
2449 ENUMX
2450   BFD_RELOC_PPC_DTPMOD
2451 ENUMX
2452   BFD_RELOC_PPC_TPREL16
2453 ENUMX
2454   BFD_RELOC_PPC_TPREL16_LO
2455 ENUMX
2456   BFD_RELOC_PPC_TPREL16_HI
2457 ENUMX
2458   BFD_RELOC_PPC_TPREL16_HA
2459 ENUMX
2460   BFD_RELOC_PPC_TPREL
2461 ENUMX
2462   BFD_RELOC_PPC_DTPREL16
2463 ENUMX
2464   BFD_RELOC_PPC_DTPREL16_LO
2465 ENUMX
2466   BFD_RELOC_PPC_DTPREL16_HI
2467 ENUMX
2468   BFD_RELOC_PPC_DTPREL16_HA
2469 ENUMX
2470   BFD_RELOC_PPC_DTPREL
2471 ENUMX
2472   BFD_RELOC_PPC_GOT_TLSGD16
2473 ENUMX
2474   BFD_RELOC_PPC_GOT_TLSGD16_LO
2475 ENUMX
2476   BFD_RELOC_PPC_GOT_TLSGD16_HI
2477 ENUMX
2478   BFD_RELOC_PPC_GOT_TLSGD16_HA
2479 ENUMX
2480   BFD_RELOC_PPC_GOT_TLSLD16
2481 ENUMX
2482   BFD_RELOC_PPC_GOT_TLSLD16_LO
2483 ENUMX
2484   BFD_RELOC_PPC_GOT_TLSLD16_HI
2485 ENUMX
2486   BFD_RELOC_PPC_GOT_TLSLD16_HA
2487 ENUMX
2488   BFD_RELOC_PPC_GOT_TPREL16
2489 ENUMX
2490   BFD_RELOC_PPC_GOT_TPREL16_LO
2491 ENUMX
2492   BFD_RELOC_PPC_GOT_TPREL16_HI
2493 ENUMX
2494   BFD_RELOC_PPC_GOT_TPREL16_HA
2495 ENUMX
2496   BFD_RELOC_PPC_GOT_DTPREL16
2497 ENUMX
2498   BFD_RELOC_PPC_GOT_DTPREL16_LO
2499 ENUMX
2500   BFD_RELOC_PPC_GOT_DTPREL16_HI
2501 ENUMX
2502   BFD_RELOC_PPC_GOT_DTPREL16_HA
2503 ENUMX
2504   BFD_RELOC_PPC64_TPREL16_DS
2505 ENUMX
2506   BFD_RELOC_PPC64_TPREL16_LO_DS
2507 ENUMX
2508   BFD_RELOC_PPC64_TPREL16_HIGHER
2509 ENUMX
2510   BFD_RELOC_PPC64_TPREL16_HIGHERA
2511 ENUMX
2512   BFD_RELOC_PPC64_TPREL16_HIGHEST
2513 ENUMX
2514   BFD_RELOC_PPC64_TPREL16_HIGHESTA
2515 ENUMX
2516   BFD_RELOC_PPC64_DTPREL16_DS
2517 ENUMX
2518   BFD_RELOC_PPC64_DTPREL16_LO_DS
2519 ENUMX
2520   BFD_RELOC_PPC64_DTPREL16_HIGHER
2521 ENUMX
2522   BFD_RELOC_PPC64_DTPREL16_HIGHERA
2523 ENUMX
2524   BFD_RELOC_PPC64_DTPREL16_HIGHEST
2525 ENUMX
2526   BFD_RELOC_PPC64_DTPREL16_HIGHESTA
2527 ENUMDOC
2528   PowerPC and PowerPC64 thread-local storage relocations.
2529
2530 ENUM
2531   BFD_RELOC_I370_D12
2532 ENUMDOC
2533   IBM 370/390 relocations
2534
2535 ENUM
2536   BFD_RELOC_CTOR
2537 ENUMDOC
2538   The type of reloc used to build a constructor table - at the moment
2539   probably a 32 bit wide absolute relocation, but the target can choose.
2540   It generally does map to one of the other relocation types.
2541
2542 ENUM
2543   BFD_RELOC_ARM_PCREL_BRANCH
2544 ENUMDOC
2545   ARM 26 bit pc-relative branch.  The lowest two bits must be zero and are
2546   not stored in the instruction.
2547 ENUM
2548   BFD_RELOC_ARM_PCREL_BLX
2549 ENUMDOC
2550   ARM 26 bit pc-relative branch.  The lowest bit must be zero and is
2551   not stored in the instruction.  The 2nd lowest bit comes from a 1 bit
2552   field in the instruction.
2553 ENUM
2554   BFD_RELOC_THUMB_PCREL_BLX
2555 ENUMDOC
2556   Thumb 22 bit pc-relative branch.  The lowest bit must be zero and is
2557   not stored in the instruction.  The 2nd lowest bit comes from a 1 bit
2558   field in the instruction.
2559 ENUM
2560   BFD_RELOC_ARM_IMMEDIATE
2561 ENUMX
2562   BFD_RELOC_ARM_ADRL_IMMEDIATE
2563 ENUMX
2564   BFD_RELOC_ARM_OFFSET_IMM
2565 ENUMX
2566   BFD_RELOC_ARM_SHIFT_IMM
2567 ENUMX
2568   BFD_RELOC_ARM_SWI
2569 ENUMX
2570   BFD_RELOC_ARM_MULTI
2571 ENUMX
2572   BFD_RELOC_ARM_CP_OFF_IMM
2573 ENUMX
2574   BFD_RELOC_ARM_CP_OFF_IMM_S2
2575 ENUMX
2576   BFD_RELOC_ARM_ADR_IMM
2577 ENUMX
2578   BFD_RELOC_ARM_LDR_IMM
2579 ENUMX
2580   BFD_RELOC_ARM_LITERAL
2581 ENUMX
2582   BFD_RELOC_ARM_IN_POOL
2583 ENUMX
2584   BFD_RELOC_ARM_OFFSET_IMM8
2585 ENUMX
2586   BFD_RELOC_ARM_HWLITERAL
2587 ENUMX
2588   BFD_RELOC_ARM_THUMB_ADD
2589 ENUMX
2590   BFD_RELOC_ARM_THUMB_IMM
2591 ENUMX
2592   BFD_RELOC_ARM_THUMB_SHIFT
2593 ENUMX
2594   BFD_RELOC_ARM_THUMB_OFFSET
2595 ENUMX
2596   BFD_RELOC_ARM_GOT12
2597 ENUMX
2598   BFD_RELOC_ARM_GOT32
2599 ENUMX
2600   BFD_RELOC_ARM_JUMP_SLOT
2601 ENUMX
2602   BFD_RELOC_ARM_COPY
2603 ENUMX
2604   BFD_RELOC_ARM_GLOB_DAT
2605 ENUMX
2606   BFD_RELOC_ARM_PLT32
2607 ENUMX
2608   BFD_RELOC_ARM_RELATIVE
2609 ENUMX
2610   BFD_RELOC_ARM_GOTOFF
2611 ENUMX
2612   BFD_RELOC_ARM_GOTPC
2613 ENUMDOC
2614   These relocs are only used within the ARM assembler.  They are not
2615   (at present) written to any object files.
2616
2617 ENUM
2618   BFD_RELOC_SH_PCDISP8BY2
2619 ENUMX
2620   BFD_RELOC_SH_PCDISP12BY2
2621 ENUMX
2622   BFD_RELOC_SH_IMM4
2623 ENUMX
2624   BFD_RELOC_SH_IMM4BY2
2625 ENUMX
2626   BFD_RELOC_SH_IMM4BY4
2627 ENUMX
2628   BFD_RELOC_SH_IMM8
2629 ENUMX
2630   BFD_RELOC_SH_IMM8BY2
2631 ENUMX
2632   BFD_RELOC_SH_IMM8BY4
2633 ENUMX
2634   BFD_RELOC_SH_PCRELIMM8BY2
2635 ENUMX
2636   BFD_RELOC_SH_PCRELIMM8BY4
2637 ENUMX
2638   BFD_RELOC_SH_SWITCH16
2639 ENUMX
2640   BFD_RELOC_SH_SWITCH32
2641 ENUMX
2642   BFD_RELOC_SH_USES
2643 ENUMX
2644   BFD_RELOC_SH_COUNT
2645 ENUMX
2646   BFD_RELOC_SH_ALIGN
2647 ENUMX
2648   BFD_RELOC_SH_CODE
2649 ENUMX
2650   BFD_RELOC_SH_DATA
2651 ENUMX
2652   BFD_RELOC_SH_LABEL
2653 ENUMX
2654   BFD_RELOC_SH_LOOP_START
2655 ENUMX
2656   BFD_RELOC_SH_LOOP_END
2657 ENUMX
2658   BFD_RELOC_SH_COPY
2659 ENUMX
2660   BFD_RELOC_SH_GLOB_DAT
2661 ENUMX
2662   BFD_RELOC_SH_JMP_SLOT
2663 ENUMX
2664   BFD_RELOC_SH_RELATIVE
2665 ENUMX
2666   BFD_RELOC_SH_GOTPC
2667 ENUMX
2668   BFD_RELOC_SH_GOT_LOW16
2669 ENUMX
2670   BFD_RELOC_SH_GOT_MEDLOW16
2671 ENUMX
2672   BFD_RELOC_SH_GOT_MEDHI16
2673 ENUMX
2674   BFD_RELOC_SH_GOT_HI16
2675 ENUMX
2676   BFD_RELOC_SH_GOTPLT_LOW16
2677 ENUMX
2678   BFD_RELOC_SH_GOTPLT_MEDLOW16
2679 ENUMX
2680   BFD_RELOC_SH_GOTPLT_MEDHI16
2681 ENUMX
2682   BFD_RELOC_SH_GOTPLT_HI16
2683 ENUMX
2684   BFD_RELOC_SH_PLT_LOW16
2685 ENUMX
2686   BFD_RELOC_SH_PLT_MEDLOW16
2687 ENUMX
2688   BFD_RELOC_SH_PLT_MEDHI16
2689 ENUMX
2690   BFD_RELOC_SH_PLT_HI16
2691 ENUMX
2692   BFD_RELOC_SH_GOTOFF_LOW16
2693 ENUMX
2694   BFD_RELOC_SH_GOTOFF_MEDLOW16
2695 ENUMX
2696   BFD_RELOC_SH_GOTOFF_MEDHI16
2697 ENUMX
2698   BFD_RELOC_SH_GOTOFF_HI16
2699 ENUMX
2700   BFD_RELOC_SH_GOTPC_LOW16
2701 ENUMX
2702   BFD_RELOC_SH_GOTPC_MEDLOW16
2703 ENUMX
2704   BFD_RELOC_SH_GOTPC_MEDHI16
2705 ENUMX
2706   BFD_RELOC_SH_GOTPC_HI16
2707 ENUMX
2708   BFD_RELOC_SH_COPY64
2709 ENUMX
2710   BFD_RELOC_SH_GLOB_DAT64
2711 ENUMX
2712   BFD_RELOC_SH_JMP_SLOT64
2713 ENUMX
2714   BFD_RELOC_SH_RELATIVE64
2715 ENUMX
2716   BFD_RELOC_SH_GOT10BY4
2717 ENUMX
2718   BFD_RELOC_SH_GOT10BY8
2719 ENUMX
2720   BFD_RELOC_SH_GOTPLT10BY4
2721 ENUMX
2722   BFD_RELOC_SH_GOTPLT10BY8
2723 ENUMX
2724   BFD_RELOC_SH_GOTPLT32
2725 ENUMX
2726   BFD_RELOC_SH_SHMEDIA_CODE
2727 ENUMX
2728   BFD_RELOC_SH_IMMU5
2729 ENUMX
2730   BFD_RELOC_SH_IMMS6
2731 ENUMX
2732   BFD_RELOC_SH_IMMS6BY32
2733 ENUMX
2734   BFD_RELOC_SH_IMMU6
2735 ENUMX
2736   BFD_RELOC_SH_IMMS10
2737 ENUMX
2738   BFD_RELOC_SH_IMMS10BY2
2739 ENUMX
2740   BFD_RELOC_SH_IMMS10BY4
2741 ENUMX
2742   BFD_RELOC_SH_IMMS10BY8
2743 ENUMX
2744   BFD_RELOC_SH_IMMS16
2745 ENUMX
2746   BFD_RELOC_SH_IMMU16
2747 ENUMX
2748   BFD_RELOC_SH_IMM_LOW16
2749 ENUMX
2750   BFD_RELOC_SH_IMM_LOW16_PCREL
2751 ENUMX
2752   BFD_RELOC_SH_IMM_MEDLOW16
2753 ENUMX
2754   BFD_RELOC_SH_IMM_MEDLOW16_PCREL
2755 ENUMX
2756   BFD_RELOC_SH_IMM_MEDHI16
2757 ENUMX
2758   BFD_RELOC_SH_IMM_MEDHI16_PCREL
2759 ENUMX
2760   BFD_RELOC_SH_IMM_HI16
2761 ENUMX
2762   BFD_RELOC_SH_IMM_HI16_PCREL
2763 ENUMX
2764   BFD_RELOC_SH_PT_16
2765 ENUMX
2766   BFD_RELOC_SH_TLS_GD_32
2767 ENUMX
2768   BFD_RELOC_SH_TLS_LD_32
2769 ENUMX
2770   BFD_RELOC_SH_TLS_LDO_32
2771 ENUMX
2772   BFD_RELOC_SH_TLS_IE_32
2773 ENUMX
2774   BFD_RELOC_SH_TLS_LE_32
2775 ENUMX
2776   BFD_RELOC_SH_TLS_DTPMOD32
2777 ENUMX
2778   BFD_RELOC_SH_TLS_DTPOFF32
2779 ENUMX
2780   BFD_RELOC_SH_TLS_TPOFF32
2781 ENUMDOC
2782   Renesas / SuperH SH relocs.  Not all of these appear in object files.
2783
2784 ENUM
2785   BFD_RELOC_THUMB_PCREL_BRANCH9
2786 ENUMX
2787   BFD_RELOC_THUMB_PCREL_BRANCH12
2788 ENUMX
2789   BFD_RELOC_THUMB_PCREL_BRANCH23
2790 ENUMDOC
2791   Thumb 23-, 12- and 9-bit pc-relative branches.  The lowest bit must
2792   be zero and is not stored in the instruction.
2793
2794 ENUM
2795   BFD_RELOC_ARC_B22_PCREL
2796 ENUMDOC
2797   ARC Cores relocs.
2798   ARC 22 bit pc-relative branch.  The lowest two bits must be zero and are
2799   not stored in the instruction.  The high 20 bits are installed in bits 26
2800   through 7 of the instruction.
2801 ENUM
2802   BFD_RELOC_ARC_B26
2803 ENUMDOC
2804   ARC 26 bit absolute branch.  The lowest two bits must be zero and are not
2805   stored in the instruction.  The high 24 bits are installed in bits 23
2806   through 0.
2807
2808 ENUM
2809   BFD_RELOC_D10V_10_PCREL_R
2810 ENUMDOC
2811   Mitsubishi D10V relocs.
2812   This is a 10-bit reloc with the right 2 bits
2813   assumed to be 0.
2814 ENUM
2815   BFD_RELOC_D10V_10_PCREL_L
2816 ENUMDOC
2817   Mitsubishi D10V relocs.
2818   This is a 10-bit reloc with the right 2 bits
2819   assumed to be 0.  This is the same as the previous reloc
2820   except it is in the left container, i.e.,
2821   shifted left 15 bits.
2822 ENUM
2823   BFD_RELOC_D10V_18
2824 ENUMDOC
2825   This is an 18-bit reloc with the right 2 bits
2826   assumed to be 0.
2827 ENUM
2828   BFD_RELOC_D10V_18_PCREL
2829 ENUMDOC
2830   This is an 18-bit reloc with the right 2 bits
2831   assumed to be 0.
2832
2833 ENUM
2834   BFD_RELOC_D30V_6
2835 ENUMDOC
2836   Mitsubishi D30V relocs.
2837   This is a 6-bit absolute reloc.
2838 ENUM
2839   BFD_RELOC_D30V_9_PCREL
2840 ENUMDOC
2841   This is a 6-bit pc-relative reloc with
2842   the right 3 bits assumed to be 0.
2843 ENUM
2844   BFD_RELOC_D30V_9_PCREL_R
2845 ENUMDOC
2846   This is a 6-bit pc-relative reloc with
2847   the right 3 bits assumed to be 0. Same
2848   as the previous reloc but on the right side
2849   of the container.
2850 ENUM
2851   BFD_RELOC_D30V_15
2852 ENUMDOC
2853   This is a 12-bit absolute reloc with the
2854   right 3 bitsassumed to be 0.
2855 ENUM
2856   BFD_RELOC_D30V_15_PCREL
2857 ENUMDOC
2858   This is a 12-bit pc-relative reloc with
2859   the right 3 bits assumed to be 0.
2860 ENUM
2861   BFD_RELOC_D30V_15_PCREL_R
2862 ENUMDOC
2863   This is a 12-bit pc-relative reloc with
2864   the right 3 bits assumed to be 0. Same
2865   as the previous reloc but on the right side
2866   of the container.
2867 ENUM
2868   BFD_RELOC_D30V_21
2869 ENUMDOC
2870   This is an 18-bit absolute reloc with
2871   the right 3 bits assumed to be 0.
2872 ENUM
2873   BFD_RELOC_D30V_21_PCREL
2874 ENUMDOC
2875   This is an 18-bit pc-relative reloc with
2876   the right 3 bits assumed to be 0.
2877 ENUM
2878   BFD_RELOC_D30V_21_PCREL_R
2879 ENUMDOC
2880   This is an 18-bit pc-relative reloc with
2881   the right 3 bits assumed to be 0. Same
2882   as the previous reloc but on the right side
2883   of the container.
2884 ENUM
2885   BFD_RELOC_D30V_32
2886 ENUMDOC
2887   This is a 32-bit absolute reloc.
2888 ENUM
2889   BFD_RELOC_D30V_32_PCREL
2890 ENUMDOC
2891   This is a 32-bit pc-relative reloc.
2892
2893 ENUM
2894   BFD_RELOC_DLX_HI16_S
2895 ENUMDOC
2896   DLX relocs
2897 ENUM
2898   BFD_RELOC_DLX_LO16
2899 ENUMDOC
2900   DLX relocs
2901 ENUM
2902   BFD_RELOC_DLX_JMP26
2903 ENUMDOC
2904   DLX relocs
2905
2906 ENUM
2907   BFD_RELOC_M32R_24
2908 ENUMDOC
2909   Renesas M32R (formerly Mitsubishi M32R) relocs.
2910   This is a 24 bit absolute address.
2911 ENUM
2912   BFD_RELOC_M32R_10_PCREL
2913 ENUMDOC
2914   This is a 10-bit pc-relative reloc with the right 2 bits assumed to be 0.
2915 ENUM
2916   BFD_RELOC_M32R_18_PCREL
2917 ENUMDOC
2918   This is an 18-bit reloc with the right 2 bits assumed to be 0.
2919 ENUM
2920   BFD_RELOC_M32R_26_PCREL
2921 ENUMDOC
2922   This is a 26-bit reloc with the right 2 bits assumed to be 0.
2923 ENUM
2924   BFD_RELOC_M32R_HI16_ULO
2925 ENUMDOC
2926   This is a 16-bit reloc containing the high 16 bits of an address
2927   used when the lower 16 bits are treated as unsigned.
2928 ENUM
2929   BFD_RELOC_M32R_HI16_SLO
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 signed.
2933 ENUM
2934   BFD_RELOC_M32R_LO16
2935 ENUMDOC
2936   This is a 16-bit reloc containing the lower 16 bits of an address.
2937 ENUM
2938   BFD_RELOC_M32R_SDA16
2939 ENUMDOC
2940   This is a 16-bit reloc containing the small data area offset for use in
2941   add3, load, and store instructions.
2942 ENUM
2943   BFD_RELOC_M32R_GOT24
2944 ENUMX
2945   BFD_RELOC_M32R_26_PLTREL
2946 ENUMX
2947   BFD_RELOC_M32R_COPY
2948 ENUMX
2949   BFD_RELOC_M32R_GLOB_DAT
2950 ENUMX
2951   BFD_RELOC_M32R_JMP_SLOT
2952 ENUMX
2953   BFD_RELOC_M32R_RELATIVE
2954 ENUMX
2955   BFD_RELOC_M32R_GOTOFF
2956 ENUMX
2957   BFD_RELOC_M32R_GOTPC24
2958 ENUMX
2959   BFD_RELOC_M32R_GOT16_HI_ULO
2960 ENUMX
2961   BFD_RELOC_M32R_GOT16_HI_SLO
2962 ENUMX
2963   BFD_RELOC_M32R_GOT16_LO
2964 ENUMX
2965   BFD_RELOC_M32R_GOTPC_HI_ULO
2966 ENUMX
2967   BFD_RELOC_M32R_GOTPC_HI_SLO
2968 ENUMX
2969   BFD_RELOC_M32R_GOTPC_LO
2970 ENUMDOC
2971   For PIC.
2972
2973
2974 ENUM
2975   BFD_RELOC_V850_9_PCREL
2976 ENUMDOC
2977   This is a 9-bit reloc
2978 ENUM
2979   BFD_RELOC_V850_22_PCREL
2980 ENUMDOC
2981   This is a 22-bit reloc
2982
2983 ENUM
2984   BFD_RELOC_V850_SDA_16_16_OFFSET
2985 ENUMDOC
2986   This is a 16 bit offset from the short data area pointer.
2987 ENUM
2988   BFD_RELOC_V850_SDA_15_16_OFFSET
2989 ENUMDOC
2990   This is a 16 bit offset (of which only 15 bits are used) from the
2991   short data area pointer.
2992 ENUM
2993   BFD_RELOC_V850_ZDA_16_16_OFFSET
2994 ENUMDOC
2995   This is a 16 bit offset from the zero data area pointer.
2996 ENUM
2997   BFD_RELOC_V850_ZDA_15_16_OFFSET
2998 ENUMDOC
2999   This is a 16 bit offset (of which only 15 bits are used) from the
3000   zero data area pointer.
3001 ENUM
3002   BFD_RELOC_V850_TDA_6_8_OFFSET
3003 ENUMDOC
3004   This is an 8 bit offset (of which only 6 bits are used) from the
3005   tiny data area pointer.
3006 ENUM
3007   BFD_RELOC_V850_TDA_7_8_OFFSET
3008 ENUMDOC
3009   This is an 8bit offset (of which only 7 bits are used) from the tiny
3010   data area pointer.
3011 ENUM
3012   BFD_RELOC_V850_TDA_7_7_OFFSET
3013 ENUMDOC
3014   This is a 7 bit offset from the tiny data area pointer.
3015 ENUM
3016   BFD_RELOC_V850_TDA_16_16_OFFSET
3017 ENUMDOC
3018   This is a 16 bit offset from the tiny data area pointer.
3019 COMMENT
3020 ENUM
3021   BFD_RELOC_V850_TDA_4_5_OFFSET
3022 ENUMDOC
3023   This is a 5 bit offset (of which only 4 bits are used) from the tiny
3024   data area pointer.
3025 ENUM
3026   BFD_RELOC_V850_TDA_4_4_OFFSET
3027 ENUMDOC
3028   This is a 4 bit offset from the tiny data area pointer.
3029 ENUM
3030   BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
3031 ENUMDOC
3032   This is a 16 bit offset from the short data area pointer, with the
3033   bits placed non-contiguously in the instruction.
3034 ENUM
3035   BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
3036 ENUMDOC
3037   This is a 16 bit offset from the zero data area pointer, with the
3038   bits placed non-contiguously in the instruction.
3039 ENUM
3040   BFD_RELOC_V850_CALLT_6_7_OFFSET
3041 ENUMDOC
3042   This is a 6 bit offset from the call table base pointer.
3043 ENUM
3044   BFD_RELOC_V850_CALLT_16_16_OFFSET
3045 ENUMDOC
3046   This is a 16 bit offset from the call table base pointer.
3047 ENUM
3048   BFD_RELOC_V850_LONGCALL
3049 ENUMDOC
3050   Used for relaxing indirect function calls.
3051 ENUM
3052   BFD_RELOC_V850_LONGJUMP
3053 ENUMDOC
3054   Used for relaxing indirect jumps.
3055 ENUM
3056   BFD_RELOC_V850_ALIGN
3057 ENUMDOC
3058   Used to maintain alignment whilst relaxing.
3059 ENUM
3060   BFD_RELOC_MN10300_32_PCREL
3061 ENUMDOC
3062   This is a 32bit pcrel reloc for the mn10300, offset by two bytes in the
3063   instruction.
3064 ENUM
3065   BFD_RELOC_MN10300_16_PCREL
3066 ENUMDOC
3067   This is a 16bit pcrel reloc for the mn10300, offset by two bytes in the
3068   instruction.
3069
3070 ENUM
3071   BFD_RELOC_TIC30_LDP
3072 ENUMDOC
3073   This is a 8bit DP reloc for the tms320c30, where the most
3074   significant 8 bits of a 24 bit word are placed into the least
3075   significant 8 bits of the opcode.
3076
3077 ENUM
3078   BFD_RELOC_TIC54X_PARTLS7
3079 ENUMDOC
3080   This is a 7bit reloc for the tms320c54x, where the least
3081   significant 7 bits of a 16 bit word are placed into the least
3082   significant 7 bits of the opcode.
3083
3084 ENUM
3085   BFD_RELOC_TIC54X_PARTMS9
3086 ENUMDOC
3087   This is a 9bit DP reloc for the tms320c54x, where the most
3088   significant 9 bits of a 16 bit word are placed into the least
3089   significant 9 bits of the opcode.
3090
3091 ENUM
3092   BFD_RELOC_TIC54X_23
3093 ENUMDOC
3094   This is an extended address 23-bit reloc for the tms320c54x.
3095
3096 ENUM
3097   BFD_RELOC_TIC54X_16_OF_23
3098 ENUMDOC
3099   This is a 16-bit reloc for the tms320c54x, where the least
3100   significant 16 bits of a 23-bit extended address are placed into
3101   the opcode.
3102
3103 ENUM
3104   BFD_RELOC_TIC54X_MS7_OF_23
3105 ENUMDOC
3106   This is a reloc for the tms320c54x, where the most
3107   significant 7 bits of a 23-bit extended address are placed into
3108   the opcode.
3109
3110 ENUM
3111   BFD_RELOC_FR30_48
3112 ENUMDOC
3113   This is a 48 bit reloc for the FR30 that stores 32 bits.
3114 ENUM
3115   BFD_RELOC_FR30_20
3116 ENUMDOC
3117   This is a 32 bit reloc for the FR30 that stores 20 bits split up into
3118   two sections.
3119 ENUM
3120   BFD_RELOC_FR30_6_IN_4
3121 ENUMDOC
3122   This is a 16 bit reloc for the FR30 that stores a 6 bit word offset in
3123   4 bits.
3124 ENUM
3125   BFD_RELOC_FR30_8_IN_8
3126 ENUMDOC
3127   This is a 16 bit reloc for the FR30 that stores an 8 bit byte offset
3128   into 8 bits.
3129 ENUM
3130   BFD_RELOC_FR30_9_IN_8
3131 ENUMDOC
3132   This is a 16 bit reloc for the FR30 that stores a 9 bit short offset
3133   into 8 bits.
3134 ENUM
3135   BFD_RELOC_FR30_10_IN_8
3136 ENUMDOC
3137   This is a 16 bit reloc for the FR30 that stores a 10 bit word offset
3138   into 8 bits.
3139 ENUM
3140   BFD_RELOC_FR30_9_PCREL
3141 ENUMDOC
3142   This is a 16 bit reloc for the FR30 that stores a 9 bit pc relative
3143   short offset into 8 bits.
3144 ENUM
3145   BFD_RELOC_FR30_12_PCREL
3146 ENUMDOC
3147   This is a 16 bit reloc for the FR30 that stores a 12 bit pc relative
3148   short offset into 11 bits.
3149
3150 ENUM
3151   BFD_RELOC_MCORE_PCREL_IMM8BY4
3152 ENUMX
3153   BFD_RELOC_MCORE_PCREL_IMM11BY2
3154 ENUMX
3155   BFD_RELOC_MCORE_PCREL_IMM4BY2
3156 ENUMX
3157   BFD_RELOC_MCORE_PCREL_32
3158 ENUMX
3159   BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2
3160 ENUMX
3161   BFD_RELOC_MCORE_RVA
3162 ENUMDOC
3163   Motorola Mcore relocations.
3164
3165 ENUM
3166   BFD_RELOC_MMIX_GETA
3167 ENUMX
3168   BFD_RELOC_MMIX_GETA_1
3169 ENUMX
3170   BFD_RELOC_MMIX_GETA_2
3171 ENUMX
3172   BFD_RELOC_MMIX_GETA_3
3173 ENUMDOC
3174   These are relocations for the GETA instruction.
3175 ENUM
3176   BFD_RELOC_MMIX_CBRANCH
3177 ENUMX
3178   BFD_RELOC_MMIX_CBRANCH_J
3179 ENUMX
3180   BFD_RELOC_MMIX_CBRANCH_1
3181 ENUMX
3182   BFD_RELOC_MMIX_CBRANCH_2
3183 ENUMX
3184   BFD_RELOC_MMIX_CBRANCH_3
3185 ENUMDOC
3186   These are relocations for a conditional branch instruction.
3187 ENUM
3188   BFD_RELOC_MMIX_PUSHJ
3189 ENUMX
3190   BFD_RELOC_MMIX_PUSHJ_1
3191 ENUMX
3192   BFD_RELOC_MMIX_PUSHJ_2
3193 ENUMX
3194   BFD_RELOC_MMIX_PUSHJ_3
3195 ENUMX
3196   BFD_RELOC_MMIX_PUSHJ_STUBBABLE
3197 ENUMDOC
3198   These are relocations for the PUSHJ instruction.
3199 ENUM
3200   BFD_RELOC_MMIX_JMP
3201 ENUMX
3202   BFD_RELOC_MMIX_JMP_1
3203 ENUMX
3204   BFD_RELOC_MMIX_JMP_2
3205 ENUMX
3206   BFD_RELOC_MMIX_JMP_3
3207 ENUMDOC
3208   These are relocations for the JMP instruction.
3209 ENUM
3210   BFD_RELOC_MMIX_ADDR19
3211 ENUMDOC
3212   This is a relocation for a relative address as in a GETA instruction or
3213   a branch.
3214 ENUM
3215   BFD_RELOC_MMIX_ADDR27
3216 ENUMDOC
3217   This is a relocation for a relative address as in a JMP instruction.
3218 ENUM
3219   BFD_RELOC_MMIX_REG_OR_BYTE
3220 ENUMDOC
3221   This is a relocation for an instruction field that may be a general
3222   register or a value 0..255.
3223 ENUM
3224   BFD_RELOC_MMIX_REG
3225 ENUMDOC
3226   This is a relocation for an instruction field that may be a general
3227   register.
3228 ENUM
3229   BFD_RELOC_MMIX_BASE_PLUS_OFFSET
3230 ENUMDOC
3231   This is a relocation for two instruction fields holding a register and
3232   an offset, the equivalent of the relocation.
3233 ENUM
3234   BFD_RELOC_MMIX_LOCAL
3235 ENUMDOC
3236   This relocation is an assertion that the expression is not allocated as
3237   a global register.  It does not modify contents.
3238
3239 ENUM
3240   BFD_RELOC_AVR_7_PCREL
3241 ENUMDOC
3242   This is a 16 bit reloc for the AVR that stores 8 bit pc relative
3243   short offset into 7 bits.
3244 ENUM
3245   BFD_RELOC_AVR_13_PCREL
3246 ENUMDOC
3247   This is a 16 bit reloc for the AVR that stores 13 bit pc relative
3248   short offset into 12 bits.
3249 ENUM
3250   BFD_RELOC_AVR_16_PM
3251 ENUMDOC
3252   This is a 16 bit reloc for the AVR that stores 17 bit value (usually
3253   program memory address) into 16 bits.
3254 ENUM
3255   BFD_RELOC_AVR_LO8_LDI
3256 ENUMDOC
3257   This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3258   data memory address) into 8 bit immediate value of LDI insn.
3259 ENUM
3260   BFD_RELOC_AVR_HI8_LDI
3261 ENUMDOC
3262   This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3263   of data memory address) into 8 bit immediate value of LDI insn.
3264 ENUM
3265   BFD_RELOC_AVR_HH8_LDI
3266 ENUMDOC
3267   This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3268   of program memory address) into 8 bit immediate value of LDI insn.
3269 ENUM
3270   BFD_RELOC_AVR_LO8_LDI_NEG
3271 ENUMDOC
3272   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3273   (usually data memory address) into 8 bit immediate value of SUBI insn.
3274 ENUM
3275   BFD_RELOC_AVR_HI8_LDI_NEG
3276 ENUMDOC
3277   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3278   (high 8 bit of data memory address) into 8 bit immediate value of
3279   SUBI insn.
3280 ENUM
3281   BFD_RELOC_AVR_HH8_LDI_NEG
3282 ENUMDOC
3283   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3284   (most high 8 bit of program memory address) into 8 bit immediate value
3285   of LDI or SUBI insn.
3286 ENUM
3287   BFD_RELOC_AVR_LO8_LDI_PM
3288 ENUMDOC
3289   This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3290   command address) into 8 bit immediate value of LDI insn.
3291 ENUM
3292   BFD_RELOC_AVR_HI8_LDI_PM
3293 ENUMDOC
3294   This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3295   of command address) into 8 bit immediate value of LDI insn.
3296 ENUM
3297   BFD_RELOC_AVR_HH8_LDI_PM
3298 ENUMDOC
3299   This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3300   of command address) into 8 bit immediate value of LDI insn.
3301 ENUM
3302   BFD_RELOC_AVR_LO8_LDI_PM_NEG
3303 ENUMDOC
3304   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3305   (usually command address) into 8 bit immediate value of SUBI insn.
3306 ENUM
3307   BFD_RELOC_AVR_HI8_LDI_PM_NEG
3308 ENUMDOC
3309   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3310   (high 8 bit of 16 bit command address) into 8 bit immediate value
3311   of SUBI insn.
3312 ENUM
3313   BFD_RELOC_AVR_HH8_LDI_PM_NEG
3314 ENUMDOC
3315   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3316   (high 6 bit of 22 bit command address) into 8 bit immediate
3317   value of SUBI insn.
3318 ENUM
3319   BFD_RELOC_AVR_CALL
3320 ENUMDOC
3321   This is a 32 bit reloc for the AVR that stores 23 bit value
3322   into 22 bits.
3323
3324 ENUM
3325   BFD_RELOC_390_12
3326 ENUMDOC
3327    Direct 12 bit.
3328 ENUM
3329   BFD_RELOC_390_GOT12
3330 ENUMDOC
3331   12 bit GOT offset.
3332 ENUM
3333   BFD_RELOC_390_PLT32
3334 ENUMDOC
3335   32 bit PC relative PLT address.
3336 ENUM
3337   BFD_RELOC_390_COPY
3338 ENUMDOC
3339   Copy symbol at runtime.
3340 ENUM
3341   BFD_RELOC_390_GLOB_DAT
3342 ENUMDOC
3343   Create GOT entry.
3344 ENUM
3345   BFD_RELOC_390_JMP_SLOT
3346 ENUMDOC
3347   Create PLT entry.
3348 ENUM
3349   BFD_RELOC_390_RELATIVE
3350 ENUMDOC
3351   Adjust by program base.
3352 ENUM
3353   BFD_RELOC_390_GOTPC
3354 ENUMDOC
3355   32 bit PC relative offset to GOT.
3356 ENUM
3357   BFD_RELOC_390_GOT16
3358 ENUMDOC
3359   16 bit GOT offset.
3360 ENUM
3361   BFD_RELOC_390_PC16DBL
3362 ENUMDOC
3363   PC relative 16 bit shifted by 1.
3364 ENUM
3365   BFD_RELOC_390_PLT16DBL
3366 ENUMDOC
3367   16 bit PC rel. PLT shifted by 1.
3368 ENUM
3369   BFD_RELOC_390_PC32DBL
3370 ENUMDOC
3371   PC relative 32 bit shifted by 1.
3372 ENUM
3373   BFD_RELOC_390_PLT32DBL
3374 ENUMDOC
3375   32 bit PC rel. PLT shifted by 1.
3376 ENUM
3377   BFD_RELOC_390_GOTPCDBL
3378 ENUMDOC
3379   32 bit PC rel. GOT shifted by 1.
3380 ENUM
3381   BFD_RELOC_390_GOT64
3382 ENUMDOC
3383   64 bit GOT offset.
3384 ENUM
3385   BFD_RELOC_390_PLT64
3386 ENUMDOC
3387   64 bit PC relative PLT address.
3388 ENUM
3389   BFD_RELOC_390_GOTENT
3390 ENUMDOC
3391   32 bit rel. offset to GOT entry.
3392 ENUM
3393   BFD_RELOC_390_GOTOFF64
3394 ENUMDOC
3395   64 bit offset to GOT.
3396 ENUM
3397   BFD_RELOC_390_GOTPLT12
3398 ENUMDOC
3399   12-bit offset to symbol-entry within GOT, with PLT handling.
3400 ENUM
3401   BFD_RELOC_390_GOTPLT16
3402 ENUMDOC
3403   16-bit offset to symbol-entry within GOT, with PLT handling.
3404 ENUM
3405   BFD_RELOC_390_GOTPLT32
3406 ENUMDOC
3407   32-bit offset to symbol-entry within GOT, with PLT handling.
3408 ENUM
3409   BFD_RELOC_390_GOTPLT64
3410 ENUMDOC
3411   64-bit offset to symbol-entry within GOT, with PLT handling.
3412 ENUM
3413   BFD_RELOC_390_GOTPLTENT
3414 ENUMDOC
3415   32-bit rel. offset to symbol-entry within GOT, with PLT handling.
3416 ENUM
3417   BFD_RELOC_390_PLTOFF16
3418 ENUMDOC
3419   16-bit rel. offset from the GOT to a PLT entry.
3420 ENUM
3421   BFD_RELOC_390_PLTOFF32
3422 ENUMDOC
3423   32-bit rel. offset from the GOT to a PLT entry.
3424 ENUM
3425   BFD_RELOC_390_PLTOFF64
3426 ENUMDOC
3427   64-bit rel. offset from the GOT to a PLT entry.
3428
3429 ENUM
3430   BFD_RELOC_390_TLS_LOAD
3431 ENUMX
3432   BFD_RELOC_390_TLS_GDCALL
3433 ENUMX
3434   BFD_RELOC_390_TLS_LDCALL
3435 ENUMX
3436   BFD_RELOC_390_TLS_GD32
3437 ENUMX
3438   BFD_RELOC_390_TLS_GD64
3439 ENUMX
3440   BFD_RELOC_390_TLS_GOTIE12
3441 ENUMX
3442   BFD_RELOC_390_TLS_GOTIE32
3443 ENUMX
3444   BFD_RELOC_390_TLS_GOTIE64
3445 ENUMX
3446   BFD_RELOC_390_TLS_LDM32
3447 ENUMX
3448   BFD_RELOC_390_TLS_LDM64
3449 ENUMX
3450   BFD_RELOC_390_TLS_IE32
3451 ENUMX
3452   BFD_RELOC_390_TLS_IE64
3453 ENUMX
3454   BFD_RELOC_390_TLS_IEENT
3455 ENUMX
3456   BFD_RELOC_390_TLS_LE32
3457 ENUMX
3458   BFD_RELOC_390_TLS_LE64
3459 ENUMX
3460   BFD_RELOC_390_TLS_LDO32
3461 ENUMX
3462   BFD_RELOC_390_TLS_LDO64
3463 ENUMX
3464   BFD_RELOC_390_TLS_DTPMOD
3465 ENUMX
3466   BFD_RELOC_390_TLS_DTPOFF
3467 ENUMX
3468   BFD_RELOC_390_TLS_TPOFF
3469 ENUMDOC
3470   s390 tls relocations.
3471
3472 ENUM
3473   BFD_RELOC_390_20
3474 ENUMX
3475   BFD_RELOC_390_GOT20
3476 ENUMX
3477   BFD_RELOC_390_GOTPLT20
3478 ENUMX
3479   BFD_RELOC_390_TLS_GOTIE20
3480 ENUMDOC
3481   Long displacement extension.
3482
3483 ENUM
3484   BFD_RELOC_IP2K_FR9
3485 ENUMDOC
3486   Scenix IP2K - 9-bit register number / data address
3487 ENUM
3488   BFD_RELOC_IP2K_BANK
3489 ENUMDOC
3490   Scenix IP2K - 4-bit register/data bank number
3491 ENUM
3492   BFD_RELOC_IP2K_ADDR16CJP
3493 ENUMDOC
3494   Scenix IP2K - low 13 bits of instruction word address
3495 ENUM
3496   BFD_RELOC_IP2K_PAGE3
3497 ENUMDOC
3498   Scenix IP2K - high 3 bits of instruction word address
3499 ENUM
3500   BFD_RELOC_IP2K_LO8DATA
3501 ENUMX
3502   BFD_RELOC_IP2K_HI8DATA
3503 ENUMX
3504   BFD_RELOC_IP2K_EX8DATA
3505 ENUMDOC
3506   Scenix IP2K - ext/low/high 8 bits of data address
3507 ENUM
3508   BFD_RELOC_IP2K_LO8INSN
3509 ENUMX
3510   BFD_RELOC_IP2K_HI8INSN
3511 ENUMDOC
3512   Scenix IP2K - low/high 8 bits of instruction word address
3513 ENUM
3514   BFD_RELOC_IP2K_PC_SKIP
3515 ENUMDOC
3516   Scenix IP2K - even/odd PC modifier to modify snb pcl.0
3517 ENUM
3518   BFD_RELOC_IP2K_TEXT
3519 ENUMDOC
3520   Scenix IP2K - 16 bit word address in text section.
3521 ENUM
3522   BFD_RELOC_IP2K_FR_OFFSET
3523 ENUMDOC
3524   Scenix IP2K - 7-bit sp or dp offset
3525 ENUM
3526   BFD_RELOC_VPE4KMATH_DATA
3527 ENUMX
3528   BFD_RELOC_VPE4KMATH_INSN
3529 ENUMDOC
3530   Scenix VPE4K coprocessor - data/insn-space addressing
3531
3532 ENUM
3533   BFD_RELOC_VTABLE_INHERIT
3534 ENUMX
3535   BFD_RELOC_VTABLE_ENTRY
3536 ENUMDOC
3537   These two relocations are used by the linker to determine which of
3538   the entries in a C++ virtual function table are actually used.  When
3539   the --gc-sections option is given, the linker will zero out the entries
3540   that are not used, so that the code for those functions need not be
3541   included in the output.
3542
3543   VTABLE_INHERIT is a zero-space relocation used to describe to the
3544   linker the inheritance tree of a C++ virtual function table.  The
3545   relocation's symbol should be the parent class' vtable, and the
3546   relocation should be located at the child vtable.
3547
3548   VTABLE_ENTRY is a zero-space relocation that describes the use of a
3549   virtual function table entry.  The reloc's symbol should refer to the
3550   table of the class mentioned in the code.  Off of that base, an offset
3551   describes the entry that is being used.  For Rela hosts, this offset
3552   is stored in the reloc's addend.  For Rel hosts, we are forced to put
3553   this offset in the reloc's section offset.
3554
3555 ENUM
3556   BFD_RELOC_IA64_IMM14
3557 ENUMX
3558   BFD_RELOC_IA64_IMM22
3559 ENUMX
3560   BFD_RELOC_IA64_IMM64
3561 ENUMX
3562   BFD_RELOC_IA64_DIR32MSB
3563 ENUMX
3564   BFD_RELOC_IA64_DIR32LSB
3565 ENUMX
3566   BFD_RELOC_IA64_DIR64MSB
3567 ENUMX
3568   BFD_RELOC_IA64_DIR64LSB
3569 ENUMX
3570   BFD_RELOC_IA64_GPREL22
3571 ENUMX
3572   BFD_RELOC_IA64_GPREL64I
3573 ENUMX
3574   BFD_RELOC_IA64_GPREL32MSB
3575 ENUMX
3576   BFD_RELOC_IA64_GPREL32LSB
3577 ENUMX
3578   BFD_RELOC_IA64_GPREL64MSB
3579 ENUMX
3580   BFD_RELOC_IA64_GPREL64LSB
3581 ENUMX
3582   BFD_RELOC_IA64_LTOFF22
3583 ENUMX
3584   BFD_RELOC_IA64_LTOFF64I
3585 ENUMX
3586   BFD_RELOC_IA64_PLTOFF22
3587 ENUMX
3588   BFD_RELOC_IA64_PLTOFF64I
3589 ENUMX
3590   BFD_RELOC_IA64_PLTOFF64MSB
3591 ENUMX
3592   BFD_RELOC_IA64_PLTOFF64LSB
3593 ENUMX
3594   BFD_RELOC_IA64_FPTR64I
3595 ENUMX
3596   BFD_RELOC_IA64_FPTR32MSB
3597 ENUMX
3598   BFD_RELOC_IA64_FPTR32LSB
3599 ENUMX
3600   BFD_RELOC_IA64_FPTR64MSB
3601 ENUMX
3602   BFD_RELOC_IA64_FPTR64LSB
3603 ENUMX
3604   BFD_RELOC_IA64_PCREL21B
3605 ENUMX
3606   BFD_RELOC_IA64_PCREL21BI
3607 ENUMX
3608   BFD_RELOC_IA64_PCREL21M
3609 ENUMX
3610   BFD_RELOC_IA64_PCREL21F
3611 ENUMX
3612   BFD_RELOC_IA64_PCREL22
3613 ENUMX
3614   BFD_RELOC_IA64_PCREL60B
3615 ENUMX
3616   BFD_RELOC_IA64_PCREL64I
3617 ENUMX
3618   BFD_RELOC_IA64_PCREL32MSB
3619 ENUMX
3620   BFD_RELOC_IA64_PCREL32LSB
3621 ENUMX
3622   BFD_RELOC_IA64_PCREL64MSB
3623 ENUMX
3624   BFD_RELOC_IA64_PCREL64LSB
3625 ENUMX
3626   BFD_RELOC_IA64_LTOFF_FPTR22
3627 ENUMX
3628   BFD_RELOC_IA64_LTOFF_FPTR64I
3629 ENUMX
3630   BFD_RELOC_IA64_LTOFF_FPTR32MSB
3631 ENUMX
3632   BFD_RELOC_IA64_LTOFF_FPTR32LSB
3633 ENUMX
3634   BFD_RELOC_IA64_LTOFF_FPTR64MSB
3635 ENUMX
3636   BFD_RELOC_IA64_LTOFF_FPTR64LSB
3637 ENUMX
3638   BFD_RELOC_IA64_SEGREL32MSB
3639 ENUMX
3640   BFD_RELOC_IA64_SEGREL32LSB
3641 ENUMX
3642   BFD_RELOC_IA64_SEGREL64MSB
3643 ENUMX
3644   BFD_RELOC_IA64_SEGREL64LSB
3645 ENUMX
3646   BFD_RELOC_IA64_SECREL32MSB
3647 ENUMX
3648   BFD_RELOC_IA64_SECREL32LSB
3649 ENUMX
3650   BFD_RELOC_IA64_SECREL64MSB
3651 ENUMX
3652   BFD_RELOC_IA64_SECREL64LSB
3653 ENUMX
3654   BFD_RELOC_IA64_REL32MSB
3655 ENUMX
3656   BFD_RELOC_IA64_REL32LSB
3657 ENUMX
3658   BFD_RELOC_IA64_REL64MSB
3659 ENUMX
3660   BFD_RELOC_IA64_REL64LSB
3661 ENUMX
3662   BFD_RELOC_IA64_LTV32MSB
3663 ENUMX
3664   BFD_RELOC_IA64_LTV32LSB
3665 ENUMX
3666   BFD_RELOC_IA64_LTV64MSB
3667 ENUMX
3668   BFD_RELOC_IA64_LTV64LSB
3669 ENUMX
3670   BFD_RELOC_IA64_IPLTMSB
3671 ENUMX
3672   BFD_RELOC_IA64_IPLTLSB
3673 ENUMX
3674   BFD_RELOC_IA64_COPY
3675 ENUMX
3676   BFD_RELOC_IA64_LTOFF22X
3677 ENUMX
3678   BFD_RELOC_IA64_LDXMOV
3679 ENUMX
3680   BFD_RELOC_IA64_TPREL14
3681 ENUMX
3682   BFD_RELOC_IA64_TPREL22
3683 ENUMX
3684   BFD_RELOC_IA64_TPREL64I
3685 ENUMX
3686   BFD_RELOC_IA64_TPREL64MSB
3687 ENUMX
3688   BFD_RELOC_IA64_TPREL64LSB
3689 ENUMX
3690   BFD_RELOC_IA64_LTOFF_TPREL22
3691 ENUMX
3692   BFD_RELOC_IA64_DTPMOD64MSB
3693 ENUMX
3694   BFD_RELOC_IA64_DTPMOD64LSB
3695 ENUMX
3696   BFD_RELOC_IA64_LTOFF_DTPMOD22
3697 ENUMX
3698   BFD_RELOC_IA64_DTPREL14
3699 ENUMX
3700   BFD_RELOC_IA64_DTPREL22
3701 ENUMX
3702   BFD_RELOC_IA64_DTPREL64I
3703 ENUMX
3704   BFD_RELOC_IA64_DTPREL32MSB
3705 ENUMX
3706   BFD_RELOC_IA64_DTPREL32LSB
3707 ENUMX
3708   BFD_RELOC_IA64_DTPREL64MSB
3709 ENUMX
3710   BFD_RELOC_IA64_DTPREL64LSB
3711 ENUMX
3712   BFD_RELOC_IA64_LTOFF_DTPREL22
3713 ENUMDOC
3714   Intel IA64 Relocations.
3715
3716 ENUM
3717   BFD_RELOC_M68HC11_HI8
3718 ENUMDOC
3719   Motorola 68HC11 reloc.
3720   This is the 8 bit high part of an absolute address.
3721 ENUM
3722   BFD_RELOC_M68HC11_LO8
3723 ENUMDOC
3724   Motorola 68HC11 reloc.
3725   This is the 8 bit low part of an absolute address.
3726 ENUM
3727   BFD_RELOC_M68HC11_3B
3728 ENUMDOC
3729   Motorola 68HC11 reloc.
3730   This is the 3 bit of a value.
3731 ENUM
3732   BFD_RELOC_M68HC11_RL_JUMP
3733 ENUMDOC
3734   Motorola 68HC11 reloc.
3735   This reloc marks the beginning of a jump/call instruction.
3736   It is used for linker relaxation to correctly identify beginning
3737   of instruction and change some branches to use PC-relative
3738   addressing mode.
3739 ENUM
3740   BFD_RELOC_M68HC11_RL_GROUP
3741 ENUMDOC
3742   Motorola 68HC11 reloc.
3743   This reloc marks a group of several instructions that gcc generates
3744   and for which the linker relaxation pass can modify and/or remove
3745   some of them.
3746 ENUM
3747   BFD_RELOC_M68HC11_LO16
3748 ENUMDOC
3749   Motorola 68HC11 reloc.
3750   This is the 16-bit lower part of an address.  It is used for 'call'
3751   instruction to specify the symbol address without any special
3752   transformation (due to memory bank window).
3753 ENUM
3754   BFD_RELOC_M68HC11_PAGE
3755 ENUMDOC
3756   Motorola 68HC11 reloc.
3757   This is a 8-bit reloc that specifies the page number of an address.
3758   It is used by 'call' instruction to specify the page number of
3759   the symbol.
3760 ENUM
3761   BFD_RELOC_M68HC11_24
3762 ENUMDOC
3763   Motorola 68HC11 reloc.
3764   This is a 24-bit reloc that represents the address with a 16-bit
3765   value and a 8-bit page number.  The symbol address is transformed
3766   to follow the 16K memory bank of 68HC12 (seen as mapped in the window).
3767 ENUM
3768   BFD_RELOC_M68HC12_5B
3769 ENUMDOC
3770   Motorola 68HC12 reloc.
3771   This is the 5 bits of a value.
3772
3773 ENUM
3774   BFD_RELOC_CRIS_BDISP8
3775 ENUMX
3776   BFD_RELOC_CRIS_UNSIGNED_5
3777 ENUMX
3778   BFD_RELOC_CRIS_SIGNED_6
3779 ENUMX
3780   BFD_RELOC_CRIS_UNSIGNED_6
3781 ENUMX
3782   BFD_RELOC_CRIS_UNSIGNED_4
3783 ENUMDOC
3784   These relocs are only used within the CRIS assembler.  They are not
3785   (at present) written to any object files.
3786 ENUM
3787   BFD_RELOC_CRIS_COPY
3788 ENUMX
3789   BFD_RELOC_CRIS_GLOB_DAT
3790 ENUMX
3791   BFD_RELOC_CRIS_JUMP_SLOT
3792 ENUMX
3793   BFD_RELOC_CRIS_RELATIVE
3794 ENUMDOC
3795   Relocs used in ELF shared libraries for CRIS.
3796 ENUM
3797   BFD_RELOC_CRIS_32_GOT
3798 ENUMDOC
3799   32-bit offset to symbol-entry within GOT.
3800 ENUM
3801   BFD_RELOC_CRIS_16_GOT
3802 ENUMDOC
3803   16-bit offset to symbol-entry within GOT.
3804 ENUM
3805   BFD_RELOC_CRIS_32_GOTPLT
3806 ENUMDOC
3807   32-bit offset to symbol-entry within GOT, with PLT handling.
3808 ENUM
3809   BFD_RELOC_CRIS_16_GOTPLT
3810 ENUMDOC
3811   16-bit offset to symbol-entry within GOT, with PLT handling.
3812 ENUM
3813   BFD_RELOC_CRIS_32_GOTREL
3814 ENUMDOC
3815   32-bit offset to symbol, relative to GOT.
3816 ENUM
3817   BFD_RELOC_CRIS_32_PLT_GOTREL
3818 ENUMDOC
3819   32-bit offset to symbol with PLT entry, relative to GOT.
3820 ENUM
3821   BFD_RELOC_CRIS_32_PLT_PCREL
3822 ENUMDOC
3823   32-bit offset to symbol with PLT entry, relative to this relocation.
3824
3825 ENUM
3826   BFD_RELOC_860_COPY
3827 ENUMX
3828   BFD_RELOC_860_GLOB_DAT
3829 ENUMX
3830   BFD_RELOC_860_JUMP_SLOT
3831 ENUMX
3832   BFD_RELOC_860_RELATIVE
3833 ENUMX
3834   BFD_RELOC_860_PC26
3835 ENUMX
3836   BFD_RELOC_860_PLT26
3837 ENUMX
3838   BFD_RELOC_860_PC16
3839 ENUMX
3840   BFD_RELOC_860_LOW0
3841 ENUMX
3842   BFD_RELOC_860_SPLIT0
3843 ENUMX
3844   BFD_RELOC_860_LOW1
3845 ENUMX
3846   BFD_RELOC_860_SPLIT1
3847 ENUMX
3848   BFD_RELOC_860_LOW2
3849 ENUMX
3850   BFD_RELOC_860_SPLIT2
3851 ENUMX
3852   BFD_RELOC_860_LOW3
3853 ENUMX
3854   BFD_RELOC_860_LOGOT0
3855 ENUMX
3856   BFD_RELOC_860_SPGOT0
3857 ENUMX
3858   BFD_RELOC_860_LOGOT1
3859 ENUMX
3860   BFD_RELOC_860_SPGOT1
3861 ENUMX
3862   BFD_RELOC_860_LOGOTOFF0
3863 ENUMX
3864   BFD_RELOC_860_SPGOTOFF0
3865 ENUMX
3866   BFD_RELOC_860_LOGOTOFF1
3867 ENUMX
3868   BFD_RELOC_860_SPGOTOFF1
3869 ENUMX
3870   BFD_RELOC_860_LOGOTOFF2
3871 ENUMX
3872   BFD_RELOC_860_LOGOTOFF3
3873 ENUMX
3874   BFD_RELOC_860_LOPC
3875 ENUMX
3876   BFD_RELOC_860_HIGHADJ
3877 ENUMX
3878   BFD_RELOC_860_HAGOT
3879 ENUMX
3880   BFD_RELOC_860_HAGOTOFF
3881 ENUMX
3882   BFD_RELOC_860_HAPC
3883 ENUMX
3884   BFD_RELOC_860_HIGH
3885 ENUMX
3886   BFD_RELOC_860_HIGOT
3887 ENUMX
3888   BFD_RELOC_860_HIGOTOFF
3889 ENUMDOC
3890   Intel i860 Relocations.
3891
3892 ENUM
3893   BFD_RELOC_OPENRISC_ABS_26
3894 ENUMX
3895   BFD_RELOC_OPENRISC_REL_26
3896 ENUMDOC
3897   OpenRISC Relocations.
3898
3899 ENUM
3900   BFD_RELOC_H8_DIR16A8
3901 ENUMX
3902   BFD_RELOC_H8_DIR16R8
3903 ENUMX
3904   BFD_RELOC_H8_DIR24A8
3905 ENUMX
3906   BFD_RELOC_H8_DIR24R8
3907 ENUMX
3908   BFD_RELOC_H8_DIR32A16
3909 ENUMDOC
3910   H8 elf Relocations.
3911
3912 ENUM
3913   BFD_RELOC_XSTORMY16_REL_12
3914 ENUMX
3915   BFD_RELOC_XSTORMY16_12
3916 ENUMX
3917   BFD_RELOC_XSTORMY16_24
3918 ENUMX
3919   BFD_RELOC_XSTORMY16_FPTR16
3920 ENUMDOC
3921   Sony Xstormy16 Relocations.
3922
3923 ENUM
3924   BFD_RELOC_VAX_GLOB_DAT
3925 ENUMX
3926   BFD_RELOC_VAX_JMP_SLOT
3927 ENUMX
3928   BFD_RELOC_VAX_RELATIVE
3929 ENUMDOC
3930   Relocations used by VAX ELF.
3931
3932 ENUM
3933   BFD_RELOC_MSP430_10_PCREL
3934 ENUMX
3935   BFD_RELOC_MSP430_16_PCREL
3936 ENUMX
3937   BFD_RELOC_MSP430_16
3938 ENUMX
3939   BFD_RELOC_MSP430_16_PCREL_BYTE
3940 ENUMX
3941   BFD_RELOC_MSP430_16_BYTE
3942 ENUMDOC
3943   msp430 specific relocation codes
3944
3945 ENUM
3946   BFD_RELOC_IQ2000_OFFSET_16
3947 ENUMX
3948   BFD_RELOC_IQ2000_OFFSET_21
3949 ENUMX
3950   BFD_RELOC_IQ2000_UHI16
3951 ENUMDOC
3952   IQ2000 Relocations.
3953
3954 ENUM
3955   BFD_RELOC_XTENSA_RTLD
3956 ENUMDOC
3957   Special Xtensa relocation used only by PLT entries in ELF shared
3958   objects to indicate that the runtime linker should set the value
3959   to one of its own internal functions or data structures.
3960 ENUM
3961   BFD_RELOC_XTENSA_GLOB_DAT
3962 ENUMX
3963   BFD_RELOC_XTENSA_JMP_SLOT
3964 ENUMX
3965   BFD_RELOC_XTENSA_RELATIVE
3966 ENUMDOC
3967   Xtensa relocations for ELF shared objects.
3968 ENUM
3969   BFD_RELOC_XTENSA_PLT
3970 ENUMDOC
3971   Xtensa relocation used in ELF object files for symbols that may require
3972   PLT entries.  Otherwise, this is just a generic 32-bit relocation.
3973 ENUM
3974   BFD_RELOC_XTENSA_OP0
3975 ENUMX
3976   BFD_RELOC_XTENSA_OP1
3977 ENUMX
3978   BFD_RELOC_XTENSA_OP2
3979 ENUMDOC
3980   Generic Xtensa relocations.  Only the operand number is encoded
3981   in the relocation.  The details are determined by extracting the
3982   instruction opcode.
3983 ENUM
3984   BFD_RELOC_XTENSA_ASM_EXPAND
3985 ENUMDOC
3986   Xtensa relocation to mark that the assembler expanded the
3987   instructions from an original target.  The expansion size is
3988   encoded in the reloc size.
3989 ENUM
3990   BFD_RELOC_XTENSA_ASM_SIMPLIFY
3991 ENUMDOC
3992   Xtensa relocation to mark that the linker should simplify
3993   assembler-expanded instructions.  This is commonly used
3994   internally by the linker after analysis of a
3995   BFD_RELOC_XTENSA_ASM_EXPAND.
3996
3997 ENDSENUM
3998   BFD_RELOC_UNUSED
3999 CODE_FRAGMENT
4000 .
4001 .typedef enum bfd_reloc_code_real bfd_reloc_code_real_type;
4002 */
4003
4004 /*
4005 FUNCTION
4006         bfd_reloc_type_lookup
4007
4008 SYNOPSIS
4009         reloc_howto_type *bfd_reloc_type_lookup
4010           (bfd *abfd, bfd_reloc_code_real_type code);
4011
4012 DESCRIPTION
4013         Return a pointer to a howto structure which, when
4014         invoked, will perform the relocation @var{code} on data from the
4015         architecture noted.
4016
4017 */
4018
4019 reloc_howto_type *
4020 bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
4021 {
4022   return BFD_SEND (abfd, reloc_type_lookup, (abfd, code));
4023 }
4024
4025 static reloc_howto_type bfd_howto_32 =
4026 HOWTO (0, 00, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "VRT32", FALSE, 0xffffffff, 0xffffffff, TRUE);
4027
4028 /*
4029 INTERNAL_FUNCTION
4030         bfd_default_reloc_type_lookup
4031
4032 SYNOPSIS
4033         reloc_howto_type *bfd_default_reloc_type_lookup
4034           (bfd *abfd, bfd_reloc_code_real_type  code);
4035
4036 DESCRIPTION
4037         Provides a default relocation lookup routine for any architecture.
4038
4039 */
4040
4041 reloc_howto_type *
4042 bfd_default_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
4043 {
4044   switch (code)
4045     {
4046     case BFD_RELOC_CTOR:
4047       /* The type of reloc used in a ctor, which will be as wide as the
4048          address - so either a 64, 32, or 16 bitter.  */
4049       switch (bfd_get_arch_info (abfd)->bits_per_address)
4050         {
4051         case 64:
4052           BFD_FAIL ();
4053         case 32:
4054           return &bfd_howto_32;
4055         case 16:
4056           BFD_FAIL ();
4057         default:
4058           BFD_FAIL ();
4059         }
4060     default:
4061       BFD_FAIL ();
4062     }
4063   return NULL;
4064 }
4065
4066 /*
4067 FUNCTION
4068         bfd_get_reloc_code_name
4069
4070 SYNOPSIS
4071         const char *bfd_get_reloc_code_name (bfd_reloc_code_real_type code);
4072
4073 DESCRIPTION
4074         Provides a printable name for the supplied relocation code.
4075         Useful mainly for printing error messages.
4076 */
4077
4078 const char *
4079 bfd_get_reloc_code_name (bfd_reloc_code_real_type code)
4080 {
4081   if (code > BFD_RELOC_UNUSED)
4082     return 0;
4083   return bfd_reloc_code_real_names[code];
4084 }
4085
4086 /*
4087 INTERNAL_FUNCTION
4088         bfd_generic_relax_section
4089
4090 SYNOPSIS
4091         bfd_boolean bfd_generic_relax_section
4092           (bfd *abfd,
4093            asection *section,
4094            struct bfd_link_info *,
4095            bfd_boolean *);
4096
4097 DESCRIPTION
4098         Provides default handling for relaxing for back ends which
4099         don't do relaxing -- i.e., does nothing except make sure that the
4100         final size of the section is set.
4101 */
4102
4103 bfd_boolean
4104 bfd_generic_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
4105                            asection *section ATTRIBUTE_UNUSED,
4106                            struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
4107                            bfd_boolean *again)
4108 {
4109   /* We're not relaxing the section, so just copy the size info if it's
4110      zero.  Someone else, like bfd_merge_sections, might have set it, so
4111      don't overwrite a non-zero value.  */
4112   if (section->_cooked_size == 0)
4113     section->_cooked_size = section->_raw_size;
4114   *again = FALSE;
4115   return TRUE;
4116 }
4117
4118 /*
4119 INTERNAL_FUNCTION
4120         bfd_generic_gc_sections
4121
4122 SYNOPSIS
4123         bfd_boolean bfd_generic_gc_sections
4124           (bfd *, struct bfd_link_info *);
4125
4126 DESCRIPTION
4127         Provides default handling for relaxing for back ends which
4128         don't do section gc -- i.e., does nothing.
4129 */
4130
4131 bfd_boolean
4132 bfd_generic_gc_sections (bfd *abfd ATTRIBUTE_UNUSED,
4133                          struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4134 {
4135   return TRUE;
4136 }
4137
4138 /*
4139 INTERNAL_FUNCTION
4140         bfd_generic_merge_sections
4141
4142 SYNOPSIS
4143         bfd_boolean bfd_generic_merge_sections
4144           (bfd *, struct bfd_link_info *);
4145
4146 DESCRIPTION
4147         Provides default handling for SEC_MERGE section merging for back ends
4148         which don't have SEC_MERGE support -- i.e., does nothing.
4149 */
4150
4151 bfd_boolean
4152 bfd_generic_merge_sections (bfd *abfd ATTRIBUTE_UNUSED,
4153                             struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4154 {
4155   return TRUE;
4156 }
4157
4158 /*
4159 INTERNAL_FUNCTION
4160         bfd_generic_get_relocated_section_contents
4161
4162 SYNOPSIS
4163         bfd_byte *bfd_generic_get_relocated_section_contents
4164           (bfd *abfd,
4165            struct bfd_link_info *link_info,
4166            struct bfd_link_order *link_order,
4167            bfd_byte *data,
4168            bfd_boolean relocatable,
4169            asymbol **symbols);
4170
4171 DESCRIPTION
4172         Provides default handling of relocation effort for back ends
4173         which can't be bothered to do it efficiently.
4174
4175 */
4176
4177 bfd_byte *
4178 bfd_generic_get_relocated_section_contents (bfd *abfd,
4179                                             struct bfd_link_info *link_info,
4180                                             struct bfd_link_order *link_order,
4181                                             bfd_byte *data,
4182                                             bfd_boolean relocatable,
4183                                             asymbol **symbols)
4184 {
4185   /* Get enough memory to hold the stuff.  */
4186   bfd *input_bfd = link_order->u.indirect.section->owner;
4187   asection *input_section = link_order->u.indirect.section;
4188
4189   long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
4190   arelent **reloc_vector = NULL;
4191   long reloc_count;
4192
4193   if (reloc_size < 0)
4194     goto error_return;
4195
4196   reloc_vector = bfd_malloc (reloc_size);
4197   if (reloc_vector == NULL && reloc_size != 0)
4198     goto error_return;
4199
4200   /* Read in the section.  */
4201   if (!bfd_get_section_contents (input_bfd,
4202                                  input_section,
4203                                  data,
4204                                  0,
4205                                  input_section->_raw_size))
4206     goto error_return;
4207
4208   /* Don't set input_section->_cooked_size here.  The caller has set
4209      _cooked_size or called bfd_relax_section, which sets _cooked_size.
4210      Despite using this generic relocation function, some targets perform
4211      target-specific relaxation or string merging, which happens before
4212      this function is called.  We do not want to clobber the _cooked_size
4213      they computed.  */
4214
4215   input_section->reloc_done = TRUE;
4216
4217   reloc_count = bfd_canonicalize_reloc (input_bfd,
4218                                         input_section,
4219                                         reloc_vector,
4220                                         symbols);
4221   if (reloc_count < 0)
4222     goto error_return;
4223
4224   if (reloc_count > 0)
4225     {
4226       arelent **parent;
4227       for (parent = reloc_vector; *parent != NULL; parent++)
4228         {
4229           char *error_message = NULL;
4230           bfd_reloc_status_type r =
4231             bfd_perform_relocation (input_bfd,
4232                                     *parent,
4233                                     data,
4234                                     input_section,
4235                                     relocatable ? abfd : NULL,
4236                                     &error_message);
4237
4238           if (relocatable)
4239             {
4240               asection *os = input_section->output_section;
4241
4242               /* A partial link, so keep the relocs.  */
4243               os->orelocation[os->reloc_count] = *parent;
4244               os->reloc_count++;
4245             }
4246
4247           if (r != bfd_reloc_ok)
4248             {
4249               switch (r)
4250                 {
4251                 case bfd_reloc_undefined:
4252                   if (!((*link_info->callbacks->undefined_symbol)
4253                         (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4254                          input_bfd, input_section, (*parent)->address,
4255                          TRUE)))
4256                     goto error_return;
4257                   break;
4258                 case bfd_reloc_dangerous:
4259                   BFD_ASSERT (error_message != NULL);
4260                   if (!((*link_info->callbacks->reloc_dangerous)
4261                         (link_info, error_message, input_bfd, input_section,
4262                          (*parent)->address)))
4263                     goto error_return;
4264                   break;
4265                 case bfd_reloc_overflow:
4266                   if (!((*link_info->callbacks->reloc_overflow)
4267                         (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4268                          (*parent)->howto->name, (*parent)->addend,
4269                          input_bfd, input_section, (*parent)->address)))
4270                     goto error_return;
4271                   break;
4272                 case bfd_reloc_outofrange:
4273                 default:
4274                   abort ();
4275                   break;
4276                 }
4277
4278             }
4279         }
4280     }
4281   if (reloc_vector != NULL)
4282     free (reloc_vector);
4283   return data;
4284
4285 error_return:
4286   if (reloc_vector != NULL)
4287     free (reloc_vector);
4288   return NULL;
4289 }