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, 2005
   4    Free Software Foundation, Inc.
   5    Written by Cygnus Support.
   6
   7    This file is part of BFD, the Binary File Descriptor library.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  22
  23 /*
  24 SECTION
  25         Relocations
  26
  27         BFD maintains relocations in much the same way it maintains
  28         symbols: they are left alone until required, then read in
  29         en-masse and translated into an internal form.  A common
  30         routine <<bfd_perform_relocation>> acts upon the
  31         canonical form to do the fixup.
  32
  33         Relocations are maintained on a per section basis,
  34         while symbols are maintained on a per BFD basis.
  35
  36         All that a back end has to do to fit the BFD interface is to create
  37         a <<struct reloc_cache_entry>> for each relocation
  38         in a particular section, and fill in the right bits of the structures.
  39
  40 @menu
  41 @* typedef arelent::
  42 @* howto manager::
  43 @end menu
  44
  45 */
  46
  47 /* DO compile in the reloc_code name table from libbfd.h.  */
  48 #define _BFD_MAKE_TABLE_bfd_reloc_code_real
  49
  50 #include "bfd.h"
  51 #include "sysdep.h"
  52 #include "bfdlink.h"
  53 #include "libbfd.h"
  54 /*
  55 DOCDD
  56 INODE
  57         typedef arelent, howto manager, Relocations, Relocations
  58
  59 SUBSECTION
  60         typedef arelent
  61
  62         This is the structure of a relocation entry:
  63
  64 CODE_FRAGMENT
  65 .
  66 .typedef enum bfd_reloc_status
  67 .{
  68 .  {* No errors detected.  *}
  69 .  bfd_reloc_ok,
  70 .
  71 .  {* The relocation was performed, but there was an overflow.  *}
  72 .  bfd_reloc_overflow,
  73 .
  74 .  {* The address to relocate was not within the section supplied.  *}
  75 .  bfd_reloc_outofrange,
  76 .
  77 .  {* Used by special functions.  *}
  78 .  bfd_reloc_continue,
  79 .
  80 .  {* Unsupported relocation size requested.  *}
  81 .  bfd_reloc_notsupported,
  82 .
  83 .  {* Unused.  *}
  84 .  bfd_reloc_other,
  85 .
  86 .  {* The symbol to relocate against was undefined.  *}
  87 .  bfd_reloc_undefined,
  88 .
  89 .  {* The relocation was performed, but may not be ok - presently
  90 .     generated only when linking i960 coff files with i960 b.out
  91 .     symbols.  If this type is returned, the error_message argument
  92 .     to bfd_perform_relocation will be set.  *}
  93 .  bfd_reloc_dangerous
  94 . }
  95 . bfd_reloc_status_type;
  96 .
  97 .
  98 .typedef struct reloc_cache_entry
  99 .{
 100 .  {* A pointer into the canonical table of pointers.  *}
 101 .  struct bfd_symbol **sym_ptr_ptr;
 102 .
 103 .  {* offset in section.  *}
 104 .  bfd_size_type address;
 105 .
 106 .  {* addend for relocation value.  *}
 107 .  bfd_vma addend;
 108 .
 109 .  {* Pointer to how to perform the required relocation.  *}
 110 .  reloc_howto_type *howto;
 111 .
 112 .}
 113 .arelent;
 114 .
 115 */
 116
 117 /*
 118 DESCRIPTION
 119
 120         Here is a description of each of the fields within an <<arelent>>:
 121
 122         o <<sym_ptr_ptr>>
 123
 124         The symbol table pointer points to a pointer to the symbol
 125         associated with the relocation request.  It is the pointer
 126         into the table returned by the back end's
 127         <<canonicalize_symtab>> action. @xref{Symbols}. The symbol is
 128         referenced through a pointer to a pointer so that tools like
 129         the linker can fix up all the symbols of the same name by
 130         modifying only one pointer. The relocation routine looks in
 131         the symbol and uses the base of the section the symbol is
 132         attached to and the value of the symbol as the initial
 133         relocation offset. If the symbol pointer is zero, then the
 134         section provided is looked up.
 135
 136         o <<address>>
 137
 138         The <<address>> field gives the offset in bytes from the base of
 139         the section data which owns the relocation record to the first
 140         byte of relocatable information. The actual data relocated
 141         will be relative to this point; for example, a relocation
 142         type which modifies the bottom two bytes of a four byte word
 143         would not touch the first byte pointed to in a big endian
 144         world.
 145
 146         o <<addend>>
 147
 148         The <<addend>> is a value provided by the back end to be added (!)
 149         to the relocation offset. Its interpretation is dependent upon
 150         the howto. For example, on the 68k the code:
 151
 152 |        char foo[];
 153 |        main()
 154 |                {
 155 |                return foo[0x12345678];
 156 |                }
 157
 158         Could be compiled into:
 159
 160 |        linkw fp,#-4
 161 |        moveb @@#12345678,d0
 162 |        extbl d0
 163 |        unlk fp
 164 |        rts
 165
 166         This could create a reloc pointing to <<foo>>, but leave the
 167         offset in the data, something like:
 168
 169 |RELOCATION RECORDS FOR [.text]:
 170 |offset   type      value
 171 |00000006 32        _foo
 172 |
 173 |00000000 4e56 fffc          ; linkw fp,#-4
 174 |00000004 1039 1234 5678     ; moveb @@#12345678,d0
 175 |0000000a 49c0               ; extbl d0
 176 |0000000c 4e5e               ; unlk fp
 177 |0000000e 4e75               ; rts
 178
 179         Using coff and an 88k, some instructions don't have enough
 180         space in them to represent the full address range, and
 181         pointers have to be loaded in two parts. So you'd get something like:
 182
 183 |        or.u     r13,r0,hi16(_foo+0x12345678)
 184 |        ld.b     r2,r13,lo16(_foo+0x12345678)
 185 |        jmp      r1
 186
 187         This should create two relocs, both pointing to <<_foo>>, and with
 188         0x12340000 in their addend field. The data would consist of:
 189
 190 |RELOCATION RECORDS FOR [.text]:
 191 |offset   type      value
 192 |00000002 HVRT16    _foo+0x12340000
 193 |00000006 LVRT16    _foo+0x12340000
 194 |
 195 |00000000 5da05678           ; or.u r13,r0,0x5678
 196 |00000004 1c4d5678           ; ld.b r2,r13,0x5678
 197 |00000008 f400c001           ; jmp r1
 198
 199         The relocation routine digs out the value from the data, adds
 200         it to the addend to get the original offset, and then adds the
 201         value of <<_foo>>. Note that all 32 bits have to be kept around
 202         somewhere, to cope with carry from bit 15 to bit 16.
 203
 204         One further example is the sparc and the a.out format. The
 205         sparc has a similar problem to the 88k, in that some
 206         instructions don't have room for an entire offset, but on the
 207         sparc the parts are created in odd sized lumps. The designers of
 208         the a.out format chose to not use the data within the section
 209         for storing part of the offset; all the offset is kept within
 210         the reloc. Anything in the data should be ignored.
 211
 212 |        save %sp,-112,%sp
 213 |        sethi %hi(_foo+0x12345678),%g2
 214 |        ldsb [%g2+%lo(_foo+0x12345678)],%i0
 215 |        ret
 216 |        restore
 217
 218         Both relocs contain a pointer to <<foo>>, and the offsets
 219         contain junk.
 220
 221 |RELOCATION RECORDS FOR [.text]:
 222 |offset   type      value
 223 |00000004 HI22      _foo+0x12345678
 224 |00000008 LO10      _foo+0x12345678
 225 |
 226 |00000000 9de3bf90     ; save %sp,-112,%sp
 227 |00000004 05000000     ; sethi %hi(_foo+0),%g2
 228 |00000008 f048a000     ; ldsb [%g2+%lo(_foo+0)],%i0
 229 |0000000c 81c7e008     ; ret
 230 |00000010 81e80000     ; restore
 231
 232         o <<howto>>
 233
 234         The <<howto>> field can be imagined as a
 235         relocation instruction. It is a pointer to a structure which
 236         contains information on what to do with all of the other
 237         information in the reloc record and data section. A back end
 238         would normally have a relocation instruction set and turn
 239         relocations into pointers to the correct structure on input -
 240         but it would be possible to create each howto field on demand.
 241
 242 */
 243
 244 /*
 245 SUBSUBSECTION
 246         <<enum complain_overflow>>
 247
 248         Indicates what sort of overflow checking should be done when
 249         performing a relocation.
 250
 251 CODE_FRAGMENT
 252 .
 253 .enum complain_overflow
 254 .{
 255 .  {* Do not complain on overflow.  *}
 256 .  complain_overflow_dont,
 257 .
 258 .  {* Complain if the bitfield overflows, whether it is considered
 259 .     as signed or unsigned.  *}
 260 .  complain_overflow_bitfield,
 261 .
 262 .  {* Complain if the value overflows when considered as signed
 263 .     number.  *}
 264 .  complain_overflow_signed,
 265 .
 266 .  {* Complain if the value overflows when considered as an
 267 .     unsigned number.  *}
 268 .  complain_overflow_unsigned
 269 .};
 270
 271 */
 272
 273 /*
 274 SUBSUBSECTION
 275         <<reloc_howto_type>>
 276
 277         The <<reloc_howto_type>> is a structure which contains all the
 278         information that libbfd needs to know to tie up a back end's data.
 279
 280 CODE_FRAGMENT
 281 .struct bfd_symbol;             {* Forward declaration.  *}
 282 .
 283 .struct reloc_howto_struct
 284 .{
 285 .  {*  The type field has mainly a documentary use - the back end can
 286 .      do what it wants with it, though normally the back end's
 287 .      external idea of what a reloc number is stored
 288 .      in this field.  For example, a PC relative word relocation
 289 .      in a coff environment has the type 023 - because that's
 290 .      what the outside world calls a R_PCRWORD reloc.  *}
 291 .  unsigned int type;
 292 .
 293 .  {*  The value the final relocation is shifted right by.  This drops
 294 .      unwanted data from the relocation.  *}
 295 .  unsigned int rightshift;
 296 .
 297 .  {*  The size of the item to be relocated.  This is *not* a
 298 .      power-of-two measure.  To get the number of bytes operated
 299 .      on by a type of relocation, use bfd_get_reloc_size.  *}
 300 .  int size;
 301 .
 302 .  {*  The number of bits in the item to be relocated.  This is used
 303 .      when doing overflow checking.  *}
 304 .  unsigned int bitsize;
 305 .
 306 .  {*  Notes that the relocation is relative to the location in the
 307 .      data section of the addend.  The relocation function will
 308 .      subtract from the relocation value the address of the location
 309 .      being relocated.  *}
 310 .  bfd_boolean pc_relative;
 311 .
 312 .  {*  The bit position of the reloc value in the destination.
 313 .      The relocated value is left shifted by this amount.  *}
 314 .  unsigned int bitpos;
 315 .
 316 .  {* What type of overflow error should be checked for when
 317 .     relocating.  *}
 318 .  enum complain_overflow complain_on_overflow;
 319 .
 320 .  {* If this field is non null, then the supplied function is
 321 .     called rather than the normal function.  This allows really
 322 .     strange relocation methods to be accommodated (e.g., i960 callj
 323 .     instructions).  *}
 324 .  bfd_reloc_status_type (*special_function)
 325 .    (bfd *, arelent *, struct bfd_symbol *, void *, asection *,
 326 .     bfd *, char **);
 327 .
 328 .  {* The textual name of the relocation type.  *}
 329 .  char *name;
 330 .
 331 .  {* Some formats record a relocation addend in the section contents
 332 .     rather than with the relocation.  For ELF formats this is the
 333 .     distinction between USE_REL and USE_RELA (though the code checks
 334 .     for USE_REL == 1/0).  The value of this field is TRUE if the
 335 .     addend is recorded with the section contents; when performing a
 336 .     partial link (ld -r) the section contents (the data) will be
 337 .     modified.  The value of this field is FALSE if addends are
 338 .     recorded with the relocation (in arelent.addend); when performing
 339 .     a partial link the relocation will be modified.
 340 .     All relocations for all ELF USE_RELA targets should set this field
 341 .     to FALSE (values of TRUE should be looked on with suspicion).
 342 .     However, the converse is not true: not all relocations of all ELF
 343 .     USE_REL targets set this field to TRUE.  Why this is so is peculiar
 344 .     to each particular target.  For relocs that aren't used in partial
 345 .     links (e.g. GOT stuff) it doesn't matter what this is set to.  *}
 346 .  bfd_boolean partial_inplace;
 347 .
 348 .  {* src_mask selects the part of the instruction (or data) to be used
 349 .     in the relocation sum.  If the target relocations don't have an
 350 .     addend in the reloc, eg. ELF USE_REL, src_mask will normally equal
 351 .     dst_mask to extract the addend from the section contents.  If
 352 .     relocations do have an addend in the reloc, eg. ELF USE_RELA, this
 353 .     field should be zero.  Non-zero values for ELF USE_RELA targets are
 354 .     bogus as in those cases the value in the dst_mask part of the
 355 .     section contents should be treated as garbage.  *}
 356 .  bfd_vma src_mask;
 357 .
 358 .  {* dst_mask selects which parts of the instruction (or data) are
 359 .     replaced with a relocated value.  *}
 360 .  bfd_vma dst_mask;
 361 .
 362 .  {* When some formats create PC relative instructions, they leave
 363 .     the value of the pc of the place being relocated in the offset
 364 .     slot of the instruction, so that a PC relative relocation can
 365 .     be made just by adding in an ordinary offset (e.g., sun3 a.out).
 366 .     Some formats leave the displacement part of an instruction
 367 .     empty (e.g., m88k bcs); this flag signals the fact.  *}
 368 .  bfd_boolean pcrel_offset;
 369 .};
 370 .
 371 */
 372
 373 /*
 374 FUNCTION
 375         The HOWTO Macro
 376
 377 DESCRIPTION
 378         The HOWTO define is horrible and will go away.
 379
 380 .#define HOWTO(C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC) \
 381 .  { (unsigned) C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC }
 382
 383 DESCRIPTION
 384         And will be replaced with the totally magic way. But for the
 385         moment, we are compatible, so do it this way.
 386
 387 .#define NEWHOWTO(FUNCTION, NAME, SIZE, REL, IN) \
 388 .  HOWTO (0, 0, SIZE, 0, REL, 0, complain_overflow_dont, FUNCTION, \
 389 .         NAME, FALSE, 0, 0, IN)
 390 .
 391
 392 DESCRIPTION
 393         This is used to fill in an empty howto entry in an array.
 394
 395 .#define EMPTY_HOWTO(C) \
 396 .  HOWTO ((C), 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL, \
 397 .         NULL, FALSE, 0, 0, FALSE)
 398 .
 399
 400 DESCRIPTION
 401         Helper routine to turn a symbol into a relocation value.
 402
 403 .#define HOWTO_PREPARE(relocation, symbol)               \
 404 .  {                                                     \
 405 .    if (symbol != NULL)                                 \
 406 .      {                                                 \
 407 .        if (bfd_is_com_section (symbol->section))       \
 408 .          {                                             \
 409 .            relocation = 0;                             \
 410 .          }                                             \
 411 .        else                                            \
 412 .          {                                             \
 413 .            relocation = symbol->value;                 \
 414 .          }                                             \
 415 .      }                                                 \
 416 .  }
 417 .
 418 */
 419
 420 /*
 421 FUNCTION
 422         bfd_get_reloc_size
 423
 424 SYNOPSIS
 425         unsigned int bfd_get_reloc_size (reloc_howto_type *);
 426
 427 DESCRIPTION
 428         For a reloc_howto_type that operates on a fixed number of bytes,
 429         this returns the number of bytes operated on.
 430  */
 431
 432 unsigned int
 433 bfd_get_reloc_size (reloc_howto_type *howto)
 434 {
 435   switch (howto->size)
 436     {
 437     case 0: return 1;
 438     case 1: return 2;
 439     case 2: return 4;
 440     case 3: return 0;
 441     case 4: return 8;
 442     case 8: return 16;
 443     case -2: return 4;
 444     default: abort ();
 445     }
 446 }
 447
 448 /*
 449 TYPEDEF
 450         arelent_chain
 451
 452 DESCRIPTION
 453
 454         How relocs are tied together in an <<asection>>:
 455
 456 .typedef struct relent_chain
 457 .{
 458 .  arelent relent;
 459 .  struct relent_chain *next;
 460 .}
 461 .arelent_chain;
 462 .
 463 */
 464
 465 /* N_ONES produces N one bits, without overflowing machine arithmetic.  */
 466 #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1)
 467
 468 /*
 469 FUNCTION
 470         bfd_check_overflow
 471
 472 SYNOPSIS
 473         bfd_reloc_status_type bfd_check_overflow
 474           (enum complain_overflow how,
 475            unsigned int bitsize,
 476            unsigned int rightshift,
 477            unsigned int addrsize,
 478            bfd_vma relocation);
 479
 480 DESCRIPTION
 481         Perform overflow checking on @var{relocation} which has
 482         @var{bitsize} significant bits and will be shifted right by
 483         @var{rightshift} bits, on a machine with addresses containing
 484         @var{addrsize} significant bits.  The result is either of
 485         @code{bfd_reloc_ok} or @code{bfd_reloc_overflow}.
 486
 487 */
 488
 489 bfd_reloc_status_type
 490 bfd_check_overflow (enum complain_overflow how,
 491                     unsigned int bitsize,
 492                     unsigned int rightshift,
 493                     unsigned int addrsize,
 494                     bfd_vma relocation)
 495 {
 496   bfd_vma fieldmask, addrmask, signmask, ss, a;
 497   bfd_reloc_status_type flag = bfd_reloc_ok;
 498
 499   a = relocation;
 500
 501   /* Note: BITSIZE should always be <= ADDRSIZE, but in case it's not,
 502      we'll be permissive: extra bits in the field mask will
 503      automatically extend the address mask for purposes of the
 504      overflow check.  */
 505   fieldmask = N_ONES (bitsize);
 506   addrmask = N_ONES (addrsize) | fieldmask;
 507
 508   switch (how)
 509     {
 510     case complain_overflow_dont:
 511       break;
 512
 513     case complain_overflow_signed:
 514       /* If any sign bits are set, all sign bits must be set.  That
 515          is, A must be a valid negative address after shifting.  */
 516       a = (a & addrmask) >> rightshift;
 517       signmask = ~ (fieldmask >> 1);
 518       ss = a & signmask;
 519       if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
 520         flag = bfd_reloc_overflow;
 521       break;
 522
 523     case complain_overflow_unsigned:
 524       /* We have an overflow if the address does not fit in the field.  */
 525       a = (a & addrmask) >> rightshift;
 526       if ((a & ~ fieldmask) != 0)
 527         flag = bfd_reloc_overflow;
 528       break;
 529
 530     case complain_overflow_bitfield:
 531       /* Bitfields are sometimes signed, sometimes unsigned.  We
 532          explicitly allow an address wrap too, which means a bitfield
 533          of n bits is allowed to store -2**n to 2**n-1.  Thus overflow
 534          if the value has some, but not all, bits set outside the
 535          field.  */
 536       a >>= rightshift;
 537       ss = a & ~ fieldmask;
 538       if (ss != 0 && ss != (((bfd_vma) -1 >> rightshift) & ~ fieldmask))
 539         flag = bfd_reloc_overflow;
 540       break;
 541
 542     default:
 543       abort ();
 544     }
 545
 546   return flag;
 547 }
 548
 549 /*
 550 FUNCTION
 551         bfd_perform_relocation
 552
 553 SYNOPSIS
 554         bfd_reloc_status_type bfd_perform_relocation
 555           (bfd *abfd,
 556            arelent *reloc_entry,
 557            void *data,
 558            asection *input_section,
 559            bfd *output_bfd,
 560            char **error_message);
 561
 562 DESCRIPTION
 563         If @var{output_bfd} is supplied to this function, the
 564         generated image will be relocatable; the relocations are
 565         copied to the output file after they have been changed to
 566         reflect the new state of the world. There are two ways of
 567         reflecting the results of partial linkage in an output file:
 568         by modifying the output data in place, and by modifying the
 569         relocation record.  Some native formats (e.g., basic a.out and
 570         basic coff) have no way of specifying an addend in the
 571         relocation type, so the addend has to go in the output data.
 572         This is no big deal since in these formats the output data
 573         slot will always be big enough for the addend. Complex reloc
 574         types with addends were invented to solve just this problem.
 575         The @var{error_message} argument is set to an error message if
 576         this return @code{bfd_reloc_dangerous}.
 577
 578 */
 579
 580 bfd_reloc_status_type
 581 bfd_perform_relocation (bfd *abfd,
 582                         arelent *reloc_entry,
 583                         void *data,
 584                         asection *input_section,
 585                         bfd *output_bfd,
 586                         char **error_message)
 587 {
 588   bfd_vma relocation;
 589   bfd_reloc_status_type flag = bfd_reloc_ok;
 590   bfd_size_type octets = reloc_entry->address * bfd_octets_per_byte (abfd);
 591   bfd_vma output_base = 0;
 592   reloc_howto_type *howto = reloc_entry->howto;
 593   asection *reloc_target_output_section;
 594   asymbol *symbol;
 595
 596   symbol = *(reloc_entry->sym_ptr_ptr);
 597   if (bfd_is_abs_section (symbol->section)
 598       && output_bfd != NULL)
 599     {
 600       reloc_entry->address += input_section->output_offset;
 601       return bfd_reloc_ok;
 602     }
 603
 604   /* If we are not producing relocatable output, return an error if
 605      the symbol is not defined.  An undefined weak symbol is
 606      considered to have a value of zero (SVR4 ABI, p. 4-27).  */
 607   if (bfd_is_und_section (symbol->section)
 608       && (symbol->flags & BSF_WEAK) == 0
 609       && output_bfd == NULL)
 610     flag = bfd_reloc_undefined;
 611
 612   /* If there is a function supplied to handle this relocation type,
 613      call it.  It'll return `bfd_reloc_continue' if further processing
 614      can be done.  */
 615   if (howto->special_function)
 616     {
 617       bfd_reloc_status_type cont;
 618       cont = howto->special_function (abfd, reloc_entry, symbol, data,
 619                                       input_section, output_bfd,
 620                                       error_message);
 621       if (cont != bfd_reloc_continue)
 622         return cont;
 623     }
 624
 625   /* Is the address of the relocation really within the section?  */
 626   if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
 627     return bfd_reloc_outofrange;
 628
 629   /* Work out which section the relocation is targeted at and the
 630      initial relocation command value.  */
 631
 632   /* Get symbol value.  (Common symbols are special.)  */
 633   if (bfd_is_com_section (symbol->section))
 634     relocation = 0;
 635   else
 636     relocation = symbol->value;
 637
 638   reloc_target_output_section = symbol->section->output_section;
 639
 640   /* Convert input-section-relative symbol value to absolute.  */
 641   if ((output_bfd && ! howto->partial_inplace)
 642       || reloc_target_output_section == NULL)
 643     output_base = 0;
 644   else
 645     output_base = reloc_target_output_section->vma;
 646
 647   relocation += output_base + symbol->section->output_offset;
 648
 649   /* Add in supplied addend.  */
 650   relocation += reloc_entry->addend;
 651
 652   /* Here the variable relocation holds the final address of the
 653      symbol we are relocating against, plus any addend.  */
 654
 655   if (howto->pc_relative)
 656     {
 657       /* This is a PC relative relocation.  We want to set RELOCATION
 658          to the distance between the address of the symbol and the
 659          location.  RELOCATION is already the address of the symbol.
 660
 661          We start by subtracting the address of the section containing
 662          the location.
 663
 664          If pcrel_offset is set, we must further subtract the position
 665          of the location within the section.  Some targets arrange for
 666          the addend to be the negative of the position of the location
 667          within the section; for example, i386-aout does this.  For
 668          i386-aout, pcrel_offset is FALSE.  Some other targets do not
 669          include the position of the location; for example, m88kbcs,
 670          or ELF.  For those targets, pcrel_offset is TRUE.
 671
 672          If we are producing relocatable output, then we must ensure
 673          that this reloc will be correctly computed when the final
 674          relocation is done.  If pcrel_offset is FALSE we want to wind
 675          up with the negative of the location within the section,
 676          which means we must adjust the existing addend by the change
 677          in the location within the section.  If pcrel_offset is TRUE
 678          we do not want to adjust the existing addend at all.
 679
 680          FIXME: This seems logical to me, but for the case of
 681          producing relocatable output it is not what the code
 682          actually does.  I don't want to change it, because it seems
 683          far too likely that something will break.  */
 684
 685       relocation -=
 686         input_section->output_section->vma + input_section->output_offset;
 687
 688       if (howto->pcrel_offset)
 689         relocation -= reloc_entry->address;
 690     }
 691
 692   if (output_bfd != NULL)
 693     {
 694       if (! howto->partial_inplace)
 695         {
 696           /* This is a partial relocation, and we want to apply the relocation
 697              to the reloc entry rather than the raw data. Modify the reloc
 698              inplace to reflect what we now know.  */
 699           reloc_entry->addend = relocation;
 700           reloc_entry->address += input_section->output_offset;
 701           return flag;
 702         }
 703       else
 704         {
 705           /* This is a partial relocation, but inplace, so modify the
 706              reloc record a bit.
 707
 708              If we've relocated with a symbol with a section, change
 709              into a ref to the section belonging to the symbol.  */
 710
 711           reloc_entry->address += input_section->output_offset;
 712
 713           /* WTF?? */
 714           if (abfd->xvec->flavour == bfd_target_coff_flavour
 715               && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
 716               && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
 717             {
 718               /* For m68k-coff, the addend was being subtracted twice during
 719                  relocation with -r.  Removing the line below this comment
 720                  fixes that problem; see PR 2953.
 721
 722 However, Ian wrote the following, regarding removing the line below,
 723 which explains why it is still enabled:  --djm
 724
 725 If you put a patch like that into BFD you need to check all the COFF
 726 linkers.  I am fairly certain that patch will break coff-i386 (e.g.,
 727 SCO); see coff_i386_reloc in coff-i386.c where I worked around the
 728 problem in a different way.  There may very well be a reason that the
 729 code works as it does.
 730
 731 Hmmm.  The first obvious point is that bfd_perform_relocation should
 732 not have any tests that depend upon the flavour.  It's seem like
 733 entirely the wrong place for such a thing.  The second obvious point
 734 is that the current code ignores the reloc addend when producing
 735 relocatable output for COFF.  That's peculiar.  In fact, I really
 736 have no idea what the point of the line you want to remove is.
 737
 738 A typical COFF reloc subtracts the old value of the symbol and adds in
 739 the new value to the location in the object file (if it's a pc
 740 relative reloc it adds the difference between the symbol value and the
 741 location).  When relocating we need to preserve that property.
 742
 743 BFD handles this by setting the addend to the negative of the old
 744 value of the symbol.  Unfortunately it handles common symbols in a
 745 non-standard way (it doesn't subtract the old value) but that's a
 746 different story (we can't change it without losing backward
 747 compatibility with old object files) (coff-i386 does subtract the old
 748 value, to be compatible with existing coff-i386 targets, like SCO).
 749
 750 So everything works fine when not producing relocatable output.  When
 751 we are producing relocatable output, logically we should do exactly
 752 what we do when not producing relocatable output.  Therefore, your
 753 patch is correct.  In fact, it should probably always just set
 754 reloc_entry->addend to 0 for all cases, since it is, in fact, going to
 755 add the value into the object file.  This won't hurt the COFF code,
 756 which doesn't use the addend; I'm not sure what it will do to other
 757 formats (the thing to check for would be whether any formats both use
 758 the addend and set partial_inplace).
 759
 760 When I wanted to make coff-i386 produce relocatable output, I ran
 761 into the problem that you are running into: I wanted to remove that
 762 line.  Rather than risk it, I made the coff-i386 relocs use a special
 763 function; it's coff_i386_reloc in coff-i386.c.  The function
 764 specifically adds the addend field into the object file, knowing that
 765 bfd_perform_relocation is not going to.  If you remove that line, then
 766 coff-i386.c will wind up adding the addend field in twice.  It's
 767 trivial to fix; it just needs to be done.
 768
 769 The problem with removing the line is just that it may break some
 770 working code.  With BFD it's hard to be sure of anything.  The right
 771 way to deal with this is simply to build and test at least all the
 772 supported COFF targets.  It should be straightforward if time and disk
 773 space consuming.  For each target:
 774     1) build the linker
 775     2) generate some executable, and link it using -r (I would
 776        probably use paranoia.o and link against newlib/libc.a, which
 777        for all the supported targets would be available in
 778        /usr/cygnus/progressive/H-host/target/lib/libc.a).
 779     3) make the change to reloc.c
 780     4) rebuild the linker
 781     5) repeat step 2
 782     6) if the resulting object files are the same, you have at least
 783        made it no worse
 784     7) if they are different you have to figure out which version is
 785        right
 786 */
 787               relocation -= reloc_entry->addend;
 788               reloc_entry->addend = 0;
 789             }
 790           else
 791             {
 792               reloc_entry->addend = relocation;
 793             }
 794         }
 795     }
 796   else
 797     {
 798       reloc_entry->addend = 0;
 799     }
 800
 801   /* FIXME: This overflow checking is incomplete, because the value
 802      might have overflowed before we get here.  For a correct check we
 803      need to compute the value in a size larger than bitsize, but we
 804      can't reasonably do that for a reloc the same size as a host
 805      machine word.
 806      FIXME: We should also do overflow checking on the result after
 807      adding in the value contained in the object file.  */
 808   if (howto->complain_on_overflow != complain_overflow_dont
 809       && flag == bfd_reloc_ok)
 810     flag = bfd_check_overflow (howto->complain_on_overflow,
 811                                howto->bitsize,
 812                                howto->rightshift,
 813                                bfd_arch_bits_per_address (abfd),
 814                                relocation);
 815
 816   /* Either we are relocating all the way, or we don't want to apply
 817      the relocation to the reloc entry (probably because there isn't
 818      any room in the output format to describe addends to relocs).  */
 819
 820   /* The cast to bfd_vma avoids a bug in the Alpha OSF/1 C compiler
 821      (OSF version 1.3, compiler version 3.11).  It miscompiles the
 822      following program:
 823
 824      struct str
 825      {
 826        unsigned int i0;
 827      } s = { 0 };
 828
 829      int
 830      main ()
 831      {
 832        unsigned long x;
 833
 834        x = 0x100000000;
 835        x <<= (unsigned long) s.i0;
 836        if (x == 0)
 837          printf ("failed\n");
 838        else
 839          printf ("succeeded (%lx)\n", x);
 840      }
 841      */
 842
 843   relocation >>= (bfd_vma) howto->rightshift;
 844
 845   /* Shift everything up to where it's going to be used.  */
 846   relocation <<= (bfd_vma) howto->bitpos;
 847
 848   /* Wait for the day when all have the mask in them.  */
 849
 850   /* What we do:
 851      i instruction to be left alone
 852      o offset within instruction
 853      r relocation offset to apply
 854      S src mask
 855      D dst mask
 856      N ~dst mask
 857      A part 1
 858      B part 2
 859      R result
 860
 861      Do this:
 862      ((  i i i i i o o o o o  from bfd_get<size>
 863      and           S S S S S) to get the size offset we want
 864      +   r r r r r r r r r r) to get the final value to place
 865      and           D D D D D  to chop to right size
 866      -----------------------
 867      =             A A A A A
 868      And this:
 869      (   i i i i i o o o o o  from bfd_get<size>
 870      and N N N N N          ) get instruction
 871      -----------------------
 872      =   B B B B B
 873
 874      And then:
 875      (   B B B B B
 876      or            A A A A A)
 877      -----------------------
 878      =   R R R R R R R R R R  put into bfd_put<size>
 879      */
 880
 881 #define DOIT(x) \
 882   x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) +  relocation) & howto->dst_mask))
 883
 884   switch (howto->size)
 885     {
 886     case 0:
 887       {
 888         char x = bfd_get_8 (abfd, (char *) data + octets);
 889         DOIT (x);
 890         bfd_put_8 (abfd, x, (unsigned char *) data + octets);
 891       }
 892       break;
 893
 894     case 1:
 895       {
 896         short x = bfd_get_16 (abfd, (bfd_byte *) data + octets);
 897         DOIT (x);
 898         bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data + octets);
 899       }
 900       break;
 901     case 2:
 902       {
 903         long x = bfd_get_32 (abfd, (bfd_byte *) data + octets);
 904         DOIT (x);
 905         bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 906       }
 907       break;
 908     case -2:
 909       {
 910         long x = bfd_get_32 (abfd, (bfd_byte *) data + octets);
 911         relocation = -relocation;
 912         DOIT (x);
 913         bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 914       }
 915       break;
 916
 917     case -1:
 918       {
 919         long x = bfd_get_16 (abfd, (bfd_byte *) data + octets);
 920         relocation = -relocation;
 921         DOIT (x);
 922         bfd_put_16 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 923       }
 924       break;
 925
 926     case 3:
 927       /* Do nothing */
 928       break;
 929
 930     case 4:
 931 #ifdef BFD64
 932       {
 933         bfd_vma x = bfd_get_64 (abfd, (bfd_byte *) data + octets);
 934         DOIT (x);
 935         bfd_put_64 (abfd, x, (bfd_byte *) data + octets);
 936       }
 937 #else
 938       abort ();
 939 #endif
 940       break;
 941     default:
 942       return bfd_reloc_other;
 943     }
 944
 945   return flag;
 946 }
 947
 948 /*
 949 FUNCTION
 950         bfd_install_relocation
 951
 952 SYNOPSIS
 953         bfd_reloc_status_type bfd_install_relocation
 954           (bfd *abfd,
 955            arelent *reloc_entry,
 956            void *data, bfd_vma data_start,
 957            asection *input_section,
 958            char **error_message);
 959
 960 DESCRIPTION
 961         This looks remarkably like <<bfd_perform_relocation>>, except it
 962         does not expect that the section contents have been filled in.
 963         I.e., it's suitable for use when creating, rather than applying
 964         a relocation.
 965
 966         For now, this function should be considered reserved for the
 967         assembler.
 968 */
 969
 970 bfd_reloc_status_type
 971 bfd_install_relocation (bfd *abfd,
 972                         arelent *reloc_entry,
 973                         void *data_start,
 974                         bfd_vma data_start_offset,
 975                         asection *input_section,
 976                         char **error_message)
 977 {
 978   bfd_vma relocation;
 979   bfd_reloc_status_type flag = bfd_reloc_ok;
 980   bfd_size_type octets = reloc_entry->address * bfd_octets_per_byte (abfd);
 981   bfd_vma output_base = 0;
 982   reloc_howto_type *howto = reloc_entry->howto;
 983   asection *reloc_target_output_section;
 984   asymbol *symbol;
 985   bfd_byte *data;
 986
 987   symbol = *(reloc_entry->sym_ptr_ptr);
 988   if (bfd_is_abs_section (symbol->section))
 989     {
 990       reloc_entry->address += input_section->output_offset;
 991       return bfd_reloc_ok;
 992     }
 993
 994   /* If there is a function supplied to handle this relocation type,
 995      call it.  It'll return `bfd_reloc_continue' if further processing
 996      can be done.  */
 997   if (howto->special_function)
 998     {
 999       bfd_reloc_status_type cont;
1000
1001       /* XXX - The special_function calls haven't been fixed up to deal
1002          with creating new relocations and section contents.  */
1003       cont = howto->special_function (abfd, reloc_entry, symbol,
1004                                       /* XXX - Non-portable! */
1005                                       ((bfd_byte *) data_start
1006                                        - data_start_offset),
1007                                       input_section, abfd, error_message);
1008       if (cont != bfd_reloc_continue)
1009         return cont;
1010     }
1011
1012   /* Is the address of the relocation really within the section?  */
1013   if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1014     return bfd_reloc_outofrange;
1015
1016   /* Work out which section the relocation is targeted at and the
1017      initial relocation command value.  */
1018
1019   /* Get symbol value.  (Common symbols are special.)  */
1020   if (bfd_is_com_section (symbol->section))
1021     relocation = 0;
1022   else
1023     relocation = symbol->value;
1024
1025   reloc_target_output_section = symbol->section->output_section;
1026
1027   /* Convert input-section-relative symbol value to absolute.  */
1028   if (! howto->partial_inplace)
1029     output_base = 0;
1030   else
1031     output_base = reloc_target_output_section->vma;
1032
1033   relocation += output_base + symbol->section->output_offset;
1034
1035   /* Add in supplied addend.  */
1036   relocation += reloc_entry->addend;
1037
1038   /* Here the variable relocation holds the final address of the
1039      symbol we are relocating against, plus any addend.  */
1040
1041   if (howto->pc_relative)
1042     {
1043       /* This is a PC relative relocation.  We want to set RELOCATION
1044          to the distance between the address of the symbol and the
1045          location.  RELOCATION is already the address of the symbol.
1046
1047          We start by subtracting the address of the section containing
1048          the location.
1049
1050          If pcrel_offset is set, we must further subtract the position
1051          of the location within the section.  Some targets arrange for
1052          the addend to be the negative of the position of the location
1053          within the section; for example, i386-aout does this.  For
1054          i386-aout, pcrel_offset is FALSE.  Some other targets do not
1055          include the position of the location; for example, m88kbcs,
1056          or ELF.  For those targets, pcrel_offset is TRUE.
1057
1058          If we are producing relocatable output, then we must ensure
1059          that this reloc will be correctly computed when the final
1060          relocation is done.  If pcrel_offset is FALSE we want to wind
1061          up with the negative of the location within the section,
1062          which means we must adjust the existing addend by the change
1063          in the location within the section.  If pcrel_offset is TRUE
1064          we do not want to adjust the existing addend at all.
1065
1066          FIXME: This seems logical to me, but for the case of
1067          producing relocatable output it is not what the code
1068          actually does.  I don't want to change it, because it seems
1069          far too likely that something will break.  */
1070
1071       relocation -=
1072         input_section->output_section->vma + input_section->output_offset;
1073
1074       if (howto->pcrel_offset && howto->partial_inplace)
1075         relocation -= reloc_entry->address;
1076     }
1077
1078   if (! howto->partial_inplace)
1079     {
1080       /* This is a partial relocation, and we want to apply the relocation
1081          to the reloc entry rather than the raw data. Modify the reloc
1082          inplace to reflect what we now know.  */
1083       reloc_entry->addend = relocation;
1084       reloc_entry->address += input_section->output_offset;
1085       return flag;
1086     }
1087   else
1088     {
1089       /* This is a partial relocation, but inplace, so modify the
1090          reloc record a bit.
1091
1092          If we've relocated with a symbol with a section, change
1093          into a ref to the section belonging to the symbol.  */
1094       reloc_entry->address += input_section->output_offset;
1095
1096       /* WTF?? */
1097       if (abfd->xvec->flavour == bfd_target_coff_flavour
1098           && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
1099           && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
1100         {
1101
1102           /* For m68k-coff, the addend was being subtracted twice during
1103              relocation with -r.  Removing the line below this comment
1104              fixes that problem; see PR 2953.
1105
1106 However, Ian wrote the following, regarding removing the line below,
1107 which explains why it is still enabled:  --djm
1108
1109 If you put a patch like that into BFD you need to check all the COFF
1110 linkers.  I am fairly certain that patch will break coff-i386 (e.g.,
1111 SCO); see coff_i386_reloc in coff-i386.c where I worked around the
1112 problem in a different way.  There may very well be a reason that the
1113 code works as it does.
1114
1115 Hmmm.  The first obvious point is that bfd_install_relocation should
1116 not have any tests that depend upon the flavour.  It's seem like
1117 entirely the wrong place for such a thing.  The second obvious point
1118 is that the current code ignores the reloc addend when producing
1119 relocatable output for COFF.  That's peculiar.  In fact, I really
1120 have no idea what the point of the line you want to remove is.
1121
1122 A typical COFF reloc subtracts the old value of the symbol and adds in
1123 the new value to the location in the object file (if it's a pc
1124 relative reloc it adds the difference between the symbol value and the
1125 location).  When relocating we need to preserve that property.
1126
1127 BFD handles this by setting the addend to the negative of the old
1128 value of the symbol.  Unfortunately it handles common symbols in a
1129 non-standard way (it doesn't subtract the old value) but that's a
1130 different story (we can't change it without losing backward
1131 compatibility with old object files) (coff-i386 does subtract the old
1132 value, to be compatible with existing coff-i386 targets, like SCO).
1133
1134 So everything works fine when not producing relocatable output.  When
1135 we are producing relocatable output, logically we should do exactly
1136 what we do when not producing relocatable output.  Therefore, your
1137 patch is correct.  In fact, it should probably always just set
1138 reloc_entry->addend to 0 for all cases, since it is, in fact, going to
1139 add the value into the object file.  This won't hurt the COFF code,
1140 which doesn't use the addend; I'm not sure what it will do to other
1141 formats (the thing to check for would be whether any formats both use
1142 the addend and set partial_inplace).
1143
1144 When I wanted to make coff-i386 produce relocatable output, I ran
1145 into the problem that you are running into: I wanted to remove that
1146 line.  Rather than risk it, I made the coff-i386 relocs use a special
1147 function; it's coff_i386_reloc in coff-i386.c.  The function
1148 specifically adds the addend field into the object file, knowing that
1149 bfd_install_relocation is not going to.  If you remove that line, then
1150 coff-i386.c will wind up adding the addend field in twice.  It's
1151 trivial to fix; it just needs to be done.
1152
1153 The problem with removing the line is just that it may break some
1154 working code.  With BFD it's hard to be sure of anything.  The right
1155 way to deal with this is simply to build and test at least all the
1156 supported COFF targets.  It should be straightforward if time and disk
1157 space consuming.  For each target:
1158     1) build the linker
1159     2) generate some executable, and link it using -r (I would
1160        probably use paranoia.o and link against newlib/libc.a, which
1161        for all the supported targets would be available in
1162        /usr/cygnus/progressive/H-host/target/lib/libc.a).
1163     3) make the change to reloc.c
1164     4) rebuild the linker
1165     5) repeat step 2
1166     6) if the resulting object files are the same, you have at least
1167        made it no worse
1168     7) if they are different you have to figure out which version is
1169        right.  */
1170           relocation -= reloc_entry->addend;
1171           reloc_entry->addend = 0;
1172         }
1173       else
1174         {
1175           reloc_entry->addend = relocation;
1176         }
1177     }
1178
1179   /* FIXME: This overflow checking is incomplete, because the value
1180      might have overflowed before we get here.  For a correct check we
1181      need to compute the value in a size larger than bitsize, but we
1182      can't reasonably do that for a reloc the same size as a host
1183      machine word.
1184      FIXME: We should also do overflow checking on the result after
1185      adding in the value contained in the object file.  */
1186   if (howto->complain_on_overflow != complain_overflow_dont)
1187     flag = bfd_check_overflow (howto->complain_on_overflow,
1188                                howto->bitsize,
1189                                howto->rightshift,
1190                                bfd_arch_bits_per_address (abfd),
1191                                relocation);
1192
1193   /* Either we are relocating all the way, or we don't want to apply
1194      the relocation to the reloc entry (probably because there isn't
1195      any room in the output format to describe addends to relocs).  */
1196
1197   /* The cast to bfd_vma avoids a bug in the Alpha OSF/1 C compiler
1198      (OSF version 1.3, compiler version 3.11).  It miscompiles the
1199      following program:
1200
1201      struct str
1202      {
1203        unsigned int i0;
1204      } s = { 0 };
1205
1206      int
1207      main ()
1208      {
1209        unsigned long x;
1210
1211        x = 0x100000000;
1212        x <<= (unsigned long) s.i0;
1213        if (x == 0)
1214          printf ("failed\n");
1215        else
1216          printf ("succeeded (%lx)\n", x);
1217      }
1218      */
1219
1220   relocation >>= (bfd_vma) howto->rightshift;
1221
1222   /* Shift everything up to where it's going to be used.  */
1223   relocation <<= (bfd_vma) howto->bitpos;
1224
1225   /* Wait for the day when all have the mask in them.  */
1226
1227   /* What we do:
1228      i instruction to be left alone
1229      o offset within instruction
1230      r relocation offset to apply
1231      S src mask
1232      D dst mask
1233      N ~dst mask
1234      A part 1
1235      B part 2
1236      R result
1237
1238      Do this:
1239      ((  i i i i i o o o o o  from bfd_get<size>
1240      and           S S S S S) to get the size offset we want
1241      +   r r r r r r r r r r) to get the final value to place
1242      and           D D D D D  to chop to right size
1243      -----------------------
1244      =             A A A A A
1245      And this:
1246      (   i i i i i o o o o o  from bfd_get<size>
1247      and N N N N N          ) get instruction
1248      -----------------------
1249      =   B B B B B
1250
1251      And then:
1252      (   B B B B B
1253      or            A A A A A)
1254      -----------------------
1255      =   R R R R R R R R R R  put into bfd_put<size>
1256      */
1257
1258 #define DOIT(x) \
1259   x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) +  relocation) & howto->dst_mask))
1260
1261   data = (bfd_byte *) data_start + (octets - data_start_offset);
1262
1263   switch (howto->size)
1264     {
1265     case 0:
1266       {
1267         char x = bfd_get_8 (abfd, data);
1268         DOIT (x);
1269         bfd_put_8 (abfd, x, data);
1270       }
1271       break;
1272
1273     case 1:
1274       {
1275         short x = bfd_get_16 (abfd, data);
1276         DOIT (x);
1277         bfd_put_16 (abfd, (bfd_vma) x, data);
1278       }
1279       break;
1280     case 2:
1281       {
1282         long x = bfd_get_32 (abfd, data);
1283         DOIT (x);
1284         bfd_put_32 (abfd, (bfd_vma) x, data);
1285       }
1286       break;
1287     case -2:
1288       {
1289         long x = bfd_get_32 (abfd, data);
1290         relocation = -relocation;
1291         DOIT (x);
1292         bfd_put_32 (abfd, (bfd_vma) x, data);
1293       }
1294       break;
1295
1296     case 3:
1297       /* Do nothing */
1298       break;
1299
1300     case 4:
1301       {
1302         bfd_vma x = bfd_get_64 (abfd, data);
1303         DOIT (x);
1304         bfd_put_64 (abfd, x, data);
1305       }
1306       break;
1307     default:
1308       return bfd_reloc_other;
1309     }
1310
1311   return flag;
1312 }
1313
1314 /* This relocation routine is used by some of the backend linkers.
1315    They do not construct asymbol or arelent structures, so there is no
1316    reason for them to use bfd_perform_relocation.  Also,
1317    bfd_perform_relocation is so hacked up it is easier to write a new
1318    function than to try to deal with it.
1319
1320    This routine does a final relocation.  Whether it is useful for a
1321    relocatable link depends upon how the object format defines
1322    relocations.
1323
1324    FIXME: This routine ignores any special_function in the HOWTO,
1325    since the existing special_function values have been written for
1326    bfd_perform_relocation.
1327
1328    HOWTO is the reloc howto information.
1329    INPUT_BFD is the BFD which the reloc applies to.
1330    INPUT_SECTION is the section which the reloc applies to.
1331    CONTENTS is the contents of the section.
1332    ADDRESS is the address of the reloc within INPUT_SECTION.
1333    VALUE is the value of the symbol the reloc refers to.
1334    ADDEND is the addend of the reloc.  */
1335
1336 bfd_reloc_status_type
1337 _bfd_final_link_relocate (reloc_howto_type *howto,
1338                           bfd *input_bfd,
1339                           asection *input_section,
1340                           bfd_byte *contents,
1341                           bfd_vma address,
1342                           bfd_vma value,
1343                           bfd_vma addend)
1344 {
1345   bfd_vma relocation;
1346
1347   /* Sanity check the address.  */
1348   if (address > bfd_get_section_limit (input_bfd, input_section))
1349     return bfd_reloc_outofrange;
1350
1351   /* This function assumes that we are dealing with a basic relocation
1352      against a symbol.  We want to compute the value of the symbol to
1353      relocate to.  This is just VALUE, the value of the symbol, plus
1354      ADDEND, any addend associated with the reloc.  */
1355   relocation = value + addend;
1356
1357   /* If the relocation is PC relative, we want to set RELOCATION to
1358      the distance between the symbol (currently in RELOCATION) and the
1359      location we are relocating.  Some targets (e.g., i386-aout)
1360      arrange for the contents of the section to be the negative of the
1361      offset of the location within the section; for such targets
1362      pcrel_offset is FALSE.  Other targets (e.g., m88kbcs or ELF)
1363      simply leave the contents of the section as zero; for such
1364      targets pcrel_offset is TRUE.  If pcrel_offset is FALSE we do not
1365      need to subtract out the offset of the location within the
1366      section (which is just ADDRESS).  */
1367   if (howto->pc_relative)
1368     {
1369       relocation -= (input_section->output_section->vma
1370                      + input_section->output_offset);
1371       if (howto->pcrel_offset)
1372         relocation -= address;
1373     }
1374
1375   return _bfd_relocate_contents (howto, input_bfd, relocation,
1376                                  contents + address);
1377 }
1378
1379 /* Relocate a given location using a given value and howto.  */
1380
1381 bfd_reloc_status_type
1382 _bfd_relocate_contents (reloc_howto_type *howto,
1383                         bfd *input_bfd,
1384                         bfd_vma relocation,
1385                         bfd_byte *location)
1386 {
1387   int size;
1388   bfd_vma x = 0;
1389   bfd_reloc_status_type flag;
1390   unsigned int rightshift = howto->rightshift;
1391   unsigned int bitpos = howto->bitpos;
1392
1393   /* If the size is negative, negate RELOCATION.  This isn't very
1394      general.  */
1395   if (howto->size < 0)
1396     relocation = -relocation;
1397
1398   /* Get the value we are going to relocate.  */
1399   size = bfd_get_reloc_size (howto);
1400   switch (size)
1401     {
1402     default:
1403     case 0:
1404       abort ();
1405     case 1:
1406       x = bfd_get_8 (input_bfd, location);
1407       break;
1408     case 2:
1409       x = bfd_get_16 (input_bfd, location);
1410       break;
1411     case 4:
1412       x = bfd_get_32 (input_bfd, location);
1413       break;
1414     case 8:
1415 #ifdef BFD64
1416       x = bfd_get_64 (input_bfd, location);
1417 #else
1418       abort ();
1419 #endif
1420       break;
1421     }
1422
1423   /* Check for overflow.  FIXME: We may drop bits during the addition
1424      which we don't check for.  We must either check at every single
1425      operation, which would be tedious, or we must do the computations
1426      in a type larger than bfd_vma, which would be inefficient.  */
1427   flag = bfd_reloc_ok;
1428   if (howto->complain_on_overflow != complain_overflow_dont)
1429     {
1430       bfd_vma addrmask, fieldmask, signmask, ss;
1431       bfd_vma a, b, sum;
1432
1433       /* Get the values to be added together.  For signed and unsigned
1434          relocations, we assume that all values should be truncated to
1435          the size of an address.  For bitfields, all the bits matter.
1436          See also bfd_check_overflow.  */
1437       fieldmask = N_ONES (howto->bitsize);
1438       addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask;
1439       a = relocation;
1440       b = x & howto->src_mask;
1441
1442       switch (howto->complain_on_overflow)
1443         {
1444         case complain_overflow_signed:
1445           a = (a & addrmask) >> rightshift;
1446
1447           /* If any sign bits are set, all sign bits must be set.
1448              That is, A must be a valid negative address after
1449              shifting.  */
1450           signmask = ~ (fieldmask >> 1);
1451           ss = a & signmask;
1452           if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
1453             flag = bfd_reloc_overflow;
1454
1455           /* We only need this next bit of code if the sign bit of B
1456              is below the sign bit of A.  This would only happen if
1457              SRC_MASK had fewer bits than BITSIZE.  Note that if
1458              SRC_MASK has more bits than BITSIZE, we can get into
1459              trouble; we would need to verify that B is in range, as
1460              we do for A above.  */
1461           signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1462
1463           /* Set all the bits above the sign bit.  */
1464           b = (b ^ signmask) - signmask;
1465
1466           b = (b & addrmask) >> bitpos;
1467
1468           /* Now we can do the addition.  */
1469           sum = a + b;
1470
1471           /* See if the result has the correct sign.  Bits above the
1472              sign bit are junk now; ignore them.  If the sum is
1473              positive, make sure we did not have all negative inputs;
1474              if the sum is negative, make sure we did not have all
1475              positive inputs.  The test below looks only at the sign
1476              bits, and it really just
1477                  SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
1478              */
1479           signmask = (fieldmask >> 1) + 1;
1480           if (((~ (a ^ b)) & (a ^ sum)) & signmask)
1481             flag = bfd_reloc_overflow;
1482
1483           break;
1484
1485         case complain_overflow_unsigned:
1486           /* Checking for an unsigned overflow is relatively easy:
1487              trim the addresses and add, and trim the result as well.
1488              Overflow is normally indicated when the result does not
1489              fit in the field.  However, we also need to consider the
1490              case when, e.g., fieldmask is 0x7fffffff or smaller, an
1491              input is 0x80000000, and bfd_vma is only 32 bits; then we
1492              will get sum == 0, but there is an overflow, since the
1493              inputs did not fit in the field.  Instead of doing a
1494              separate test, we can check for this by or-ing in the
1495              operands when testing for the sum overflowing its final
1496              field.  */
1497           a = (a & addrmask) >> rightshift;
1498           b = (b & addrmask) >> bitpos;
1499           sum = (a + b) & addrmask;
1500           if ((a | b | sum) & ~ fieldmask)
1501             flag = bfd_reloc_overflow;
1502
1503           break;
1504
1505         case complain_overflow_bitfield:
1506           /* Much like the signed check, but for a field one bit
1507              wider, and no trimming inputs with addrmask.  We allow a
1508              bitfield to represent numbers in the range -2**n to
1509              2**n-1, where n is the number of bits in the field.
1510              Note that when bfd_vma is 32 bits, a 32-bit reloc can't
1511              overflow, which is exactly what we want.  */
1512           a >>= rightshift;
1513
1514           signmask = ~ fieldmask;
1515           ss = a & signmask;
1516           if (ss != 0 && ss != (((bfd_vma) -1 >> rightshift) & signmask))
1517             flag = bfd_reloc_overflow;
1518
1519           signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1520           b = (b ^ signmask) - signmask;
1521
1522           b >>= bitpos;
1523
1524           sum = a + b;
1525
1526           /* We mask with addrmask here to explicitly allow an address
1527              wrap-around.  The Linux kernel relies on it, and it is
1528              the only way to write assembler code which can run when
1529              loaded at a location 0x80000000 away from the location at
1530              which it is linked.  */
1531           signmask = fieldmask + 1;
1532           if (((~ (a ^ b)) & (a ^ sum)) & signmask & addrmask)
1533             flag = bfd_reloc_overflow;
1534
1535           break;
1536
1537         default:
1538           abort ();
1539         }
1540     }
1541
1542   /* Put RELOCATION in the right bits.  */
1543   relocation >>= (bfd_vma) rightshift;
1544   relocation <<= (bfd_vma) bitpos;
1545
1546   /* Add RELOCATION to the right bits of X.  */
1547   x = ((x & ~howto->dst_mask)
1548        | (((x & howto->src_mask) + relocation) & howto->dst_mask));
1549
1550   /* Put the relocated value back in the object file.  */
1551   switch (size)
1552     {
1553     default:
1554     case 0:
1555       abort ();
1556     case 1:
1557       bfd_put_8 (input_bfd, x, location);
1558       break;
1559     case 2:
1560       bfd_put_16 (input_bfd, x, location);
1561       break;
1562     case 4:
1563       bfd_put_32 (input_bfd, x, location);
1564       break;
1565     case 8:
1566 #ifdef BFD64
1567       bfd_put_64 (input_bfd, x, location);
1568 #else
1569       abort ();
1570 #endif
1571       break;
1572     }
1573
1574   return flag;
1575 }
1576
1577 /*
1578 DOCDD
1579 INODE
1580         howto manager,  , typedef arelent, Relocations
1581
1582 SECTION
1583         The howto manager
1584
1585         When an application wants to create a relocation, but doesn't
1586         know what the target machine might call it, it can find out by
1587         using this bit of code.
1588
1589 */
1590
1591 /*
1592 TYPEDEF
1593         bfd_reloc_code_type
1594
1595 DESCRIPTION
1596         The insides of a reloc code.  The idea is that, eventually, there
1597         will be one enumerator for every type of relocation we ever do.
1598         Pass one of these values to <<bfd_reloc_type_lookup>>, and it'll
1599         return a howto pointer.
1600
1601         This does mean that the application must determine the correct
1602         enumerator value; you can't get a howto pointer from a random set
1603         of attributes.
1604
1605 SENUM
1606    bfd_reloc_code_real
1607
1608 ENUM
1609   BFD_RELOC_64
1610 ENUMX
1611   BFD_RELOC_32
1612 ENUMX
1613   BFD_RELOC_26
1614 ENUMX
1615   BFD_RELOC_24
1616 ENUMX
1617   BFD_RELOC_16
1618 ENUMX
1619   BFD_RELOC_14
1620 ENUMX
1621   BFD_RELOC_8
1622 ENUMDOC
1623   Basic absolute relocations of N bits.
1624
1625 ENUM
1626   BFD_RELOC_64_PCREL
1627 ENUMX
1628   BFD_RELOC_32_PCREL
1629 ENUMX
1630   BFD_RELOC_24_PCREL
1631 ENUMX
1632   BFD_RELOC_16_PCREL
1633 ENUMX
1634   BFD_RELOC_12_PCREL
1635 ENUMX
1636   BFD_RELOC_8_PCREL
1637 ENUMDOC
1638   PC-relative relocations.  Sometimes these are relative to the address
1639 of the relocation itself; sometimes they are relative to the start of
1640 the section containing the relocation.  It depends on the specific target.
1641
1642 The 24-bit relocation is used in some Intel 960 configurations.
1643
1644 ENUM
1645   BFD_RELOC_32_SECREL
1646 ENUMDOC
1647   Section relative relocations.  Some targets need this for DWARF2.
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
2065 ENUM
2066   BFD_RELOC_MIPS16_HI16
2067 ENUMDOC
2068   MIPS16 high 16 bits of 32-bit value.
2069 ENUM
2070   BFD_RELOC_MIPS16_HI16_S
2071 ENUMDOC
2072   MIPS16 high 16 bits of 32-bit value but the low 16 bits will be sign
2073      extended and added to form the final result.  If the low 16
2074      bits form a negative number, we need to add one to the high value
2075      to compensate for the borrow when the low bits are added.
2076 ENUM
2077   BFD_RELOC_MIPS16_LO16
2078 ENUMDOC
2079   MIPS16 low 16 bits.
2080
2081 ENUM
2082   BFD_RELOC_MIPS_LITERAL
2083 ENUMDOC
2084   Relocation against a MIPS literal section.
2085
2086 ENUM
2087   BFD_RELOC_MIPS_GOT16
2088 ENUMX
2089   BFD_RELOC_MIPS_CALL16
2090 ENUMX
2091   BFD_RELOC_MIPS_GOT_HI16
2092 ENUMX
2093   BFD_RELOC_MIPS_GOT_LO16
2094 ENUMX
2095   BFD_RELOC_MIPS_CALL_HI16
2096 ENUMX
2097   BFD_RELOC_MIPS_CALL_LO16
2098 ENUMX
2099   BFD_RELOC_MIPS_SUB
2100 ENUMX
2101   BFD_RELOC_MIPS_GOT_PAGE
2102 ENUMX
2103   BFD_RELOC_MIPS_GOT_OFST
2104 ENUMX
2105   BFD_RELOC_MIPS_GOT_DISP
2106 ENUMX
2107   BFD_RELOC_MIPS_SHIFT5
2108 ENUMX
2109   BFD_RELOC_MIPS_SHIFT6
2110 ENUMX
2111   BFD_RELOC_MIPS_INSERT_A
2112 ENUMX
2113   BFD_RELOC_MIPS_INSERT_B
2114 ENUMX
2115   BFD_RELOC_MIPS_DELETE
2116 ENUMX
2117   BFD_RELOC_MIPS_HIGHEST
2118 ENUMX
2119   BFD_RELOC_MIPS_HIGHER
2120 ENUMX
2121   BFD_RELOC_MIPS_SCN_DISP
2122 ENUMX
2123   BFD_RELOC_MIPS_REL16
2124 ENUMX
2125   BFD_RELOC_MIPS_RELGOT
2126 ENUMX
2127   BFD_RELOC_MIPS_JALR
2128 ENUMX
2129   BFD_RELOC_MIPS_TLS_DTPMOD32
2130 ENUMX
2131   BFD_RELOC_MIPS_TLS_DTPREL32
2132 ENUMX
2133   BFD_RELOC_MIPS_TLS_DTPMOD64
2134 ENUMX
2135   BFD_RELOC_MIPS_TLS_DTPREL64
2136 ENUMX
2137   BFD_RELOC_MIPS_TLS_GD
2138 ENUMX
2139   BFD_RELOC_MIPS_TLS_LDM
2140 ENUMX
2141   BFD_RELOC_MIPS_TLS_DTPREL_HI16
2142 ENUMX
2143   BFD_RELOC_MIPS_TLS_DTPREL_LO16
2144 ENUMX
2145   BFD_RELOC_MIPS_TLS_GOTTPREL
2146 ENUMX
2147   BFD_RELOC_MIPS_TLS_TPREL32
2148 ENUMX
2149   BFD_RELOC_MIPS_TLS_TPREL64
2150 ENUMX
2151   BFD_RELOC_MIPS_TLS_TPREL_HI16
2152 ENUMX
2153   BFD_RELOC_MIPS_TLS_TPREL_LO16
2154 ENUMDOC
2155   MIPS ELF relocations.
2156 COMMENT
2157
2158 ENUM
2159   BFD_RELOC_FRV_LABEL16
2160 ENUMX
2161   BFD_RELOC_FRV_LABEL24
2162 ENUMX
2163   BFD_RELOC_FRV_LO16
2164 ENUMX
2165   BFD_RELOC_FRV_HI16
2166 ENUMX
2167   BFD_RELOC_FRV_GPREL12
2168 ENUMX
2169   BFD_RELOC_FRV_GPRELU12
2170 ENUMX
2171   BFD_RELOC_FRV_GPREL32
2172 ENUMX
2173   BFD_RELOC_FRV_GPRELHI
2174 ENUMX
2175   BFD_RELOC_FRV_GPRELLO
2176 ENUMX
2177   BFD_RELOC_FRV_GOT12
2178 ENUMX
2179   BFD_RELOC_FRV_GOTHI
2180 ENUMX
2181   BFD_RELOC_FRV_GOTLO
2182 ENUMX
2183   BFD_RELOC_FRV_FUNCDESC
2184 ENUMX
2185   BFD_RELOC_FRV_FUNCDESC_GOT12
2186 ENUMX
2187   BFD_RELOC_FRV_FUNCDESC_GOTHI
2188 ENUMX
2189   BFD_RELOC_FRV_FUNCDESC_GOTLO
2190 ENUMX
2191   BFD_RELOC_FRV_FUNCDESC_VALUE
2192 ENUMX
2193   BFD_RELOC_FRV_FUNCDESC_GOTOFF12
2194 ENUMX
2195   BFD_RELOC_FRV_FUNCDESC_GOTOFFHI
2196 ENUMX
2197   BFD_RELOC_FRV_FUNCDESC_GOTOFFLO
2198 ENUMX
2199   BFD_RELOC_FRV_GOTOFF12
2200 ENUMX
2201   BFD_RELOC_FRV_GOTOFFHI
2202 ENUMX
2203   BFD_RELOC_FRV_GOTOFFLO
2204 ENUMX
2205   BFD_RELOC_FRV_GETTLSOFF
2206 ENUMX
2207   BFD_RELOC_FRV_TLSDESC_VALUE
2208 ENUMX
2209   BFD_RELOC_FRV_GOTTLSDESC12
2210 ENUMX
2211   BFD_RELOC_FRV_GOTTLSDESCHI
2212 ENUMX
2213   BFD_RELOC_FRV_GOTTLSDESCLO
2214 ENUMX
2215   BFD_RELOC_FRV_TLSMOFF12
2216 ENUMX
2217   BFD_RELOC_FRV_TLSMOFFHI
2218 ENUMX
2219   BFD_RELOC_FRV_TLSMOFFLO
2220 ENUMX
2221   BFD_RELOC_FRV_GOTTLSOFF12
2222 ENUMX
2223   BFD_RELOC_FRV_GOTTLSOFFHI
2224 ENUMX
2225   BFD_RELOC_FRV_GOTTLSOFFLO
2226 ENUMX
2227   BFD_RELOC_FRV_TLSOFF
2228 ENUMX
2229   BFD_RELOC_FRV_TLSDESC_RELAX
2230 ENUMX
2231   BFD_RELOC_FRV_GETTLSOFF_RELAX
2232 ENUMX
2233   BFD_RELOC_FRV_TLSOFF_RELAX
2234 ENUMX
2235   BFD_RELOC_FRV_TLSMOFF
2236 ENUMDOC
2237   Fujitsu Frv Relocations.
2238 COMMENT
2239
2240 ENUM
2241   BFD_RELOC_MN10300_GOTOFF24
2242 ENUMDOC
2243   This is a 24bit GOT-relative reloc for the mn10300.
2244 ENUM
2245   BFD_RELOC_MN10300_GOT32
2246 ENUMDOC
2247   This is a 32bit GOT-relative reloc for the mn10300, offset by two bytes
2248   in the instruction.
2249 ENUM
2250   BFD_RELOC_MN10300_GOT24
2251 ENUMDOC
2252   This is a 24bit GOT-relative reloc for the mn10300, offset by two bytes
2253   in the instruction.
2254 ENUM
2255   BFD_RELOC_MN10300_GOT16
2256 ENUMDOC
2257   This is a 16bit GOT-relative reloc for the mn10300, offset by two bytes
2258   in the instruction.
2259 ENUM
2260   BFD_RELOC_MN10300_COPY
2261 ENUMDOC
2262   Copy symbol at runtime.
2263 ENUM
2264   BFD_RELOC_MN10300_GLOB_DAT
2265 ENUMDOC
2266   Create GOT entry.
2267 ENUM
2268   BFD_RELOC_MN10300_JMP_SLOT
2269 ENUMDOC
2270   Create PLT entry.
2271 ENUM
2272   BFD_RELOC_MN10300_RELATIVE
2273 ENUMDOC
2274   Adjust by program base.
2275 COMMENT
2276
2277 ENUM
2278   BFD_RELOC_386_GOT32
2279 ENUMX
2280   BFD_RELOC_386_PLT32
2281 ENUMX
2282   BFD_RELOC_386_COPY
2283 ENUMX
2284   BFD_RELOC_386_GLOB_DAT
2285 ENUMX
2286   BFD_RELOC_386_JUMP_SLOT
2287 ENUMX
2288   BFD_RELOC_386_RELATIVE
2289 ENUMX
2290   BFD_RELOC_386_GOTOFF
2291 ENUMX
2292   BFD_RELOC_386_GOTPC
2293 ENUMX
2294   BFD_RELOC_386_TLS_TPOFF
2295 ENUMX
2296   BFD_RELOC_386_TLS_IE
2297 ENUMX
2298   BFD_RELOC_386_TLS_GOTIE
2299 ENUMX
2300   BFD_RELOC_386_TLS_LE
2301 ENUMX
2302   BFD_RELOC_386_TLS_GD
2303 ENUMX
2304   BFD_RELOC_386_TLS_LDM
2305 ENUMX
2306   BFD_RELOC_386_TLS_LDO_32
2307 ENUMX
2308   BFD_RELOC_386_TLS_IE_32
2309 ENUMX
2310   BFD_RELOC_386_TLS_LE_32
2311 ENUMX
2312   BFD_RELOC_386_TLS_DTPMOD32
2313 ENUMX
2314   BFD_RELOC_386_TLS_DTPOFF32
2315 ENUMX
2316   BFD_RELOC_386_TLS_TPOFF32
2317 ENUMDOC
2318   i386/elf relocations
2319
2320 ENUM
2321   BFD_RELOC_X86_64_GOT32
2322 ENUMX
2323   BFD_RELOC_X86_64_PLT32
2324 ENUMX
2325   BFD_RELOC_X86_64_COPY
2326 ENUMX
2327   BFD_RELOC_X86_64_GLOB_DAT
2328 ENUMX
2329   BFD_RELOC_X86_64_JUMP_SLOT
2330 ENUMX
2331   BFD_RELOC_X86_64_RELATIVE
2332 ENUMX
2333   BFD_RELOC_X86_64_GOTPCREL
2334 ENUMX
2335   BFD_RELOC_X86_64_32S
2336 ENUMX
2337   BFD_RELOC_X86_64_DTPMOD64
2338 ENUMX
2339   BFD_RELOC_X86_64_DTPOFF64
2340 ENUMX
2341   BFD_RELOC_X86_64_TPOFF64
2342 ENUMX
2343   BFD_RELOC_X86_64_TLSGD
2344 ENUMX
2345   BFD_RELOC_X86_64_TLSLD
2346 ENUMX
2347   BFD_RELOC_X86_64_DTPOFF32
2348 ENUMX
2349   BFD_RELOC_X86_64_GOTTPOFF
2350 ENUMX
2351   BFD_RELOC_X86_64_TPOFF32
2352 ENUMDOC
2353   x86-64/elf relocations
2354
2355 ENUM
2356   BFD_RELOC_NS32K_IMM_8
2357 ENUMX
2358   BFD_RELOC_NS32K_IMM_16
2359 ENUMX
2360   BFD_RELOC_NS32K_IMM_32
2361 ENUMX
2362   BFD_RELOC_NS32K_IMM_8_PCREL
2363 ENUMX
2364   BFD_RELOC_NS32K_IMM_16_PCREL
2365 ENUMX
2366   BFD_RELOC_NS32K_IMM_32_PCREL
2367 ENUMX
2368   BFD_RELOC_NS32K_DISP_8
2369 ENUMX
2370   BFD_RELOC_NS32K_DISP_16
2371 ENUMX
2372   BFD_RELOC_NS32K_DISP_32
2373 ENUMX
2374   BFD_RELOC_NS32K_DISP_8_PCREL
2375 ENUMX
2376   BFD_RELOC_NS32K_DISP_16_PCREL
2377 ENUMX
2378   BFD_RELOC_NS32K_DISP_32_PCREL
2379 ENUMDOC
2380   ns32k relocations
2381
2382 ENUM
2383   BFD_RELOC_PDP11_DISP_8_PCREL
2384 ENUMX
2385   BFD_RELOC_PDP11_DISP_6_PCREL
2386 ENUMDOC
2387   PDP11 relocations
2388
2389 ENUM
2390   BFD_RELOC_PJ_CODE_HI16
2391 ENUMX
2392   BFD_RELOC_PJ_CODE_LO16
2393 ENUMX
2394   BFD_RELOC_PJ_CODE_DIR16
2395 ENUMX
2396   BFD_RELOC_PJ_CODE_DIR32
2397 ENUMX
2398   BFD_RELOC_PJ_CODE_REL16
2399 ENUMX
2400   BFD_RELOC_PJ_CODE_REL32
2401 ENUMDOC
2402   Picojava relocs.  Not all of these appear in object files.
2403
2404 ENUM
2405   BFD_RELOC_PPC_B26
2406 ENUMX
2407   BFD_RELOC_PPC_BA26
2408 ENUMX
2409   BFD_RELOC_PPC_TOC16
2410 ENUMX
2411   BFD_RELOC_PPC_B16
2412 ENUMX
2413   BFD_RELOC_PPC_B16_BRTAKEN
2414 ENUMX
2415   BFD_RELOC_PPC_B16_BRNTAKEN
2416 ENUMX
2417   BFD_RELOC_PPC_BA16
2418 ENUMX
2419   BFD_RELOC_PPC_BA16_BRTAKEN
2420 ENUMX
2421   BFD_RELOC_PPC_BA16_BRNTAKEN
2422 ENUMX
2423   BFD_RELOC_PPC_COPY
2424 ENUMX
2425   BFD_RELOC_PPC_GLOB_DAT
2426 ENUMX
2427   BFD_RELOC_PPC_JMP_SLOT
2428 ENUMX
2429   BFD_RELOC_PPC_RELATIVE
2430 ENUMX
2431   BFD_RELOC_PPC_LOCAL24PC
2432 ENUMX
2433   BFD_RELOC_PPC_EMB_NADDR32
2434 ENUMX
2435   BFD_RELOC_PPC_EMB_NADDR16
2436 ENUMX
2437   BFD_RELOC_PPC_EMB_NADDR16_LO
2438 ENUMX
2439   BFD_RELOC_PPC_EMB_NADDR16_HI
2440 ENUMX
2441   BFD_RELOC_PPC_EMB_NADDR16_HA
2442 ENUMX
2443   BFD_RELOC_PPC_EMB_SDAI16
2444 ENUMX
2445   BFD_RELOC_PPC_EMB_SDA2I16
2446 ENUMX
2447   BFD_RELOC_PPC_EMB_SDA2REL
2448 ENUMX
2449   BFD_RELOC_PPC_EMB_SDA21
2450 ENUMX
2451   BFD_RELOC_PPC_EMB_MRKREF
2452 ENUMX
2453   BFD_RELOC_PPC_EMB_RELSEC16
2454 ENUMX
2455   BFD_RELOC_PPC_EMB_RELST_LO
2456 ENUMX
2457   BFD_RELOC_PPC_EMB_RELST_HI
2458 ENUMX
2459   BFD_RELOC_PPC_EMB_RELST_HA
2460 ENUMX
2461   BFD_RELOC_PPC_EMB_BIT_FLD
2462 ENUMX
2463   BFD_RELOC_PPC_EMB_RELSDA
2464 ENUMX
2465   BFD_RELOC_PPC64_HIGHER
2466 ENUMX
2467   BFD_RELOC_PPC64_HIGHER_S
2468 ENUMX
2469   BFD_RELOC_PPC64_HIGHEST
2470 ENUMX
2471   BFD_RELOC_PPC64_HIGHEST_S
2472 ENUMX
2473   BFD_RELOC_PPC64_TOC16_LO
2474 ENUMX
2475   BFD_RELOC_PPC64_TOC16_HI
2476 ENUMX
2477   BFD_RELOC_PPC64_TOC16_HA
2478 ENUMX
2479   BFD_RELOC_PPC64_TOC
2480 ENUMX
2481   BFD_RELOC_PPC64_PLTGOT16
2482 ENUMX
2483   BFD_RELOC_PPC64_PLTGOT16_LO
2484 ENUMX
2485   BFD_RELOC_PPC64_PLTGOT16_HI
2486 ENUMX
2487   BFD_RELOC_PPC64_PLTGOT16_HA
2488 ENUMX
2489   BFD_RELOC_PPC64_ADDR16_DS
2490 ENUMX
2491   BFD_RELOC_PPC64_ADDR16_LO_DS
2492 ENUMX
2493   BFD_RELOC_PPC64_GOT16_DS
2494 ENUMX
2495   BFD_RELOC_PPC64_GOT16_LO_DS
2496 ENUMX
2497   BFD_RELOC_PPC64_PLT16_LO_DS
2498 ENUMX
2499   BFD_RELOC_PPC64_SECTOFF_DS
2500 ENUMX
2501   BFD_RELOC_PPC64_SECTOFF_LO_DS
2502 ENUMX
2503   BFD_RELOC_PPC64_TOC16_DS
2504 ENUMX
2505   BFD_RELOC_PPC64_TOC16_LO_DS
2506 ENUMX
2507   BFD_RELOC_PPC64_PLTGOT16_DS
2508 ENUMX
2509   BFD_RELOC_PPC64_PLTGOT16_LO_DS
2510 ENUMDOC
2511   Power(rs6000) and PowerPC relocations.
2512
2513 ENUM
2514   BFD_RELOC_PPC_TLS
2515 ENUMX
2516   BFD_RELOC_PPC_DTPMOD
2517 ENUMX
2518   BFD_RELOC_PPC_TPREL16
2519 ENUMX
2520   BFD_RELOC_PPC_TPREL16_LO
2521 ENUMX
2522   BFD_RELOC_PPC_TPREL16_HI
2523 ENUMX
2524   BFD_RELOC_PPC_TPREL16_HA
2525 ENUMX
2526   BFD_RELOC_PPC_TPREL
2527 ENUMX
2528   BFD_RELOC_PPC_DTPREL16
2529 ENUMX
2530   BFD_RELOC_PPC_DTPREL16_LO
2531 ENUMX
2532   BFD_RELOC_PPC_DTPREL16_HI
2533 ENUMX
2534   BFD_RELOC_PPC_DTPREL16_HA
2535 ENUMX
2536   BFD_RELOC_PPC_DTPREL
2537 ENUMX
2538   BFD_RELOC_PPC_GOT_TLSGD16
2539 ENUMX
2540   BFD_RELOC_PPC_GOT_TLSGD16_LO
2541 ENUMX
2542   BFD_RELOC_PPC_GOT_TLSGD16_HI
2543 ENUMX
2544   BFD_RELOC_PPC_GOT_TLSGD16_HA
2545 ENUMX
2546   BFD_RELOC_PPC_GOT_TLSLD16
2547 ENUMX
2548   BFD_RELOC_PPC_GOT_TLSLD16_LO
2549 ENUMX
2550   BFD_RELOC_PPC_GOT_TLSLD16_HI
2551 ENUMX
2552   BFD_RELOC_PPC_GOT_TLSLD16_HA
2553 ENUMX
2554   BFD_RELOC_PPC_GOT_TPREL16
2555 ENUMX
2556   BFD_RELOC_PPC_GOT_TPREL16_LO
2557 ENUMX
2558   BFD_RELOC_PPC_GOT_TPREL16_HI
2559 ENUMX
2560   BFD_RELOC_PPC_GOT_TPREL16_HA
2561 ENUMX
2562   BFD_RELOC_PPC_GOT_DTPREL16
2563 ENUMX
2564   BFD_RELOC_PPC_GOT_DTPREL16_LO
2565 ENUMX
2566   BFD_RELOC_PPC_GOT_DTPREL16_HI
2567 ENUMX
2568   BFD_RELOC_PPC_GOT_DTPREL16_HA
2569 ENUMX
2570   BFD_RELOC_PPC64_TPREL16_DS
2571 ENUMX
2572   BFD_RELOC_PPC64_TPREL16_LO_DS
2573 ENUMX
2574   BFD_RELOC_PPC64_TPREL16_HIGHER
2575 ENUMX
2576   BFD_RELOC_PPC64_TPREL16_HIGHERA
2577 ENUMX
2578   BFD_RELOC_PPC64_TPREL16_HIGHEST
2579 ENUMX
2580   BFD_RELOC_PPC64_TPREL16_HIGHESTA
2581 ENUMX
2582   BFD_RELOC_PPC64_DTPREL16_DS
2583 ENUMX
2584   BFD_RELOC_PPC64_DTPREL16_LO_DS
2585 ENUMX
2586   BFD_RELOC_PPC64_DTPREL16_HIGHER
2587 ENUMX
2588   BFD_RELOC_PPC64_DTPREL16_HIGHERA
2589 ENUMX
2590   BFD_RELOC_PPC64_DTPREL16_HIGHEST
2591 ENUMX
2592   BFD_RELOC_PPC64_DTPREL16_HIGHESTA
2593 ENUMDOC
2594   PowerPC and PowerPC64 thread-local storage relocations.
2595
2596 ENUM
2597   BFD_RELOC_I370_D12
2598 ENUMDOC
2599   IBM 370/390 relocations
2600
2601 ENUM
2602   BFD_RELOC_CTOR
2603 ENUMDOC
2604   The type of reloc used to build a constructor table - at the moment
2605   probably a 32 bit wide absolute relocation, but the target can choose.
2606   It generally does map to one of the other relocation types.
2607
2608 ENUM
2609   BFD_RELOC_ARM_PCREL_BRANCH
2610 ENUMDOC
2611   ARM 26 bit pc-relative branch.  The lowest two bits must be zero and are
2612   not stored in the instruction.
2613 ENUM
2614   BFD_RELOC_ARM_PCREL_BLX
2615 ENUMDOC
2616   ARM 26 bit pc-relative branch.  The lowest bit must be zero and is
2617   not stored in the instruction.  The 2nd lowest bit comes from a 1 bit
2618   field in the instruction.
2619 ENUM
2620   BFD_RELOC_THUMB_PCREL_BLX
2621 ENUMDOC
2622   Thumb 22 bit pc-relative branch.  The lowest bit must be zero and is
2623   not stored in the instruction.  The 2nd lowest bit comes from a 1 bit
2624   field in the instruction.
2625 ENUM
2626   BFD_RELOC_ARM_IMMEDIATE
2627 ENUMX
2628   BFD_RELOC_ARM_ADRL_IMMEDIATE
2629 ENUMX
2630   BFD_RELOC_ARM_OFFSET_IMM
2631 ENUMX
2632   BFD_RELOC_ARM_SHIFT_IMM
2633 ENUMX
2634   BFD_RELOC_ARM_SMI
2635 ENUMX
2636   BFD_RELOC_ARM_SWI
2637 ENUMX
2638   BFD_RELOC_ARM_MULTI
2639 ENUMX
2640   BFD_RELOC_ARM_CP_OFF_IMM
2641 ENUMX
2642   BFD_RELOC_ARM_CP_OFF_IMM_S2
2643 ENUMX
2644   BFD_RELOC_ARM_ADR_IMM
2645 ENUMX
2646   BFD_RELOC_ARM_LDR_IMM
2647 ENUMX
2648   BFD_RELOC_ARM_LITERAL
2649 ENUMX
2650   BFD_RELOC_ARM_IN_POOL
2651 ENUMX
2652   BFD_RELOC_ARM_OFFSET_IMM8
2653 ENUMX
2654   BFD_RELOC_ARM_HWLITERAL
2655 ENUMX
2656   BFD_RELOC_ARM_THUMB_ADD
2657 ENUMX
2658   BFD_RELOC_ARM_THUMB_IMM
2659 ENUMX
2660   BFD_RELOC_ARM_THUMB_SHIFT
2661 ENUMX
2662   BFD_RELOC_ARM_THUMB_OFFSET
2663 ENUMX
2664   BFD_RELOC_ARM_GOT12
2665 ENUMX
2666   BFD_RELOC_ARM_GOT32
2667 ENUMX
2668   BFD_RELOC_ARM_JUMP_SLOT
2669 ENUMX
2670   BFD_RELOC_ARM_COPY
2671 ENUMX
2672   BFD_RELOC_ARM_GLOB_DAT
2673 ENUMX
2674   BFD_RELOC_ARM_PLT32
2675 ENUMX
2676   BFD_RELOC_ARM_RELATIVE
2677 ENUMX
2678   BFD_RELOC_ARM_GOTOFF
2679 ENUMX
2680   BFD_RELOC_ARM_GOTPC
2681 ENUMDOC
2682   These relocs are only used within the ARM assembler.  They are not
2683   (at present) written to any object files.
2684 ENUM
2685   BFD_RELOC_ARM_TARGET1
2686 ENUMDOC
2687   Pc-relative or absolute relocation depending on target.  Used for
2688   entries in .init_array sections.
2689 ENUM
2690   BFD_RELOC_ARM_ROSEGREL32
2691 ENUMDOC
2692   Read-only segment base relative address.
2693 ENUM
2694   BFD_RELOC_ARM_SBREL32
2695 ENUMDOC
2696   Data segment base relative address.
2697 ENUM
2698   BFD_RELOC_ARM_TARGET2
2699 ENUMDOC
2700   This reloc is used for References to RTTI dta from exception handling
2701   tables.  The actual definition depends on the target.  It may be a
2702   pc-relative or some form of GOT-indirect relocation.
2703 ENUM
2704   BFD_RELOC_ARM_PREL31
2705 ENUMDOC
2706   31-bit PC relative address.
2707
2708 ENUM
2709   BFD_RELOC_SH_PCDISP8BY2
2710 ENUMX
2711   BFD_RELOC_SH_PCDISP12BY2
2712 ENUMX
2713   BFD_RELOC_SH_IMM3
2714 ENUMX
2715   BFD_RELOC_SH_IMM3U
2716 ENUMX
2717   BFD_RELOC_SH_DISP12
2718 ENUMX
2719   BFD_RELOC_SH_DISP12BY2
2720 ENUMX
2721   BFD_RELOC_SH_DISP12BY4
2722 ENUMX
2723   BFD_RELOC_SH_DISP12BY8
2724 ENUMX
2725   BFD_RELOC_SH_DISP20
2726 ENUMX
2727   BFD_RELOC_SH_DISP20BY8
2728 ENUMX
2729   BFD_RELOC_SH_IMM4
2730 ENUMX
2731   BFD_RELOC_SH_IMM4BY2
2732 ENUMX
2733   BFD_RELOC_SH_IMM4BY4
2734 ENUMX
2735   BFD_RELOC_SH_IMM8
2736 ENUMX
2737   BFD_RELOC_SH_IMM8BY2
2738 ENUMX
2739   BFD_RELOC_SH_IMM8BY4
2740 ENUMX
2741   BFD_RELOC_SH_PCRELIMM8BY2
2742 ENUMX
2743   BFD_RELOC_SH_PCRELIMM8BY4
2744 ENUMX
2745   BFD_RELOC_SH_SWITCH16
2746 ENUMX
2747   BFD_RELOC_SH_SWITCH32
2748 ENUMX
2749   BFD_RELOC_SH_USES
2750 ENUMX
2751   BFD_RELOC_SH_COUNT
2752 ENUMX
2753   BFD_RELOC_SH_ALIGN
2754 ENUMX
2755   BFD_RELOC_SH_CODE
2756 ENUMX
2757   BFD_RELOC_SH_DATA
2758 ENUMX
2759   BFD_RELOC_SH_LABEL
2760 ENUMX
2761   BFD_RELOC_SH_LOOP_START
2762 ENUMX
2763   BFD_RELOC_SH_LOOP_END
2764 ENUMX
2765   BFD_RELOC_SH_COPY
2766 ENUMX
2767   BFD_RELOC_SH_GLOB_DAT
2768 ENUMX
2769   BFD_RELOC_SH_JMP_SLOT
2770 ENUMX
2771   BFD_RELOC_SH_RELATIVE
2772 ENUMX
2773   BFD_RELOC_SH_GOTPC
2774 ENUMX
2775   BFD_RELOC_SH_GOT_LOW16
2776 ENUMX
2777   BFD_RELOC_SH_GOT_MEDLOW16
2778 ENUMX
2779   BFD_RELOC_SH_GOT_MEDHI16
2780 ENUMX
2781   BFD_RELOC_SH_GOT_HI16
2782 ENUMX
2783   BFD_RELOC_SH_GOTPLT_LOW16
2784 ENUMX
2785   BFD_RELOC_SH_GOTPLT_MEDLOW16
2786 ENUMX
2787   BFD_RELOC_SH_GOTPLT_MEDHI16
2788 ENUMX
2789   BFD_RELOC_SH_GOTPLT_HI16
2790 ENUMX
2791   BFD_RELOC_SH_PLT_LOW16
2792 ENUMX
2793   BFD_RELOC_SH_PLT_MEDLOW16
2794 ENUMX
2795   BFD_RELOC_SH_PLT_MEDHI16
2796 ENUMX
2797   BFD_RELOC_SH_PLT_HI16
2798 ENUMX
2799   BFD_RELOC_SH_GOTOFF_LOW16
2800 ENUMX
2801   BFD_RELOC_SH_GOTOFF_MEDLOW16
2802 ENUMX
2803   BFD_RELOC_SH_GOTOFF_MEDHI16
2804 ENUMX
2805   BFD_RELOC_SH_GOTOFF_HI16
2806 ENUMX
2807   BFD_RELOC_SH_GOTPC_LOW16
2808 ENUMX
2809   BFD_RELOC_SH_GOTPC_MEDLOW16
2810 ENUMX
2811   BFD_RELOC_SH_GOTPC_MEDHI16
2812 ENUMX
2813   BFD_RELOC_SH_GOTPC_HI16
2814 ENUMX
2815   BFD_RELOC_SH_COPY64
2816 ENUMX
2817   BFD_RELOC_SH_GLOB_DAT64
2818 ENUMX
2819   BFD_RELOC_SH_JMP_SLOT64
2820 ENUMX
2821   BFD_RELOC_SH_RELATIVE64
2822 ENUMX
2823   BFD_RELOC_SH_GOT10BY4
2824 ENUMX
2825   BFD_RELOC_SH_GOT10BY8
2826 ENUMX
2827   BFD_RELOC_SH_GOTPLT10BY4
2828 ENUMX
2829   BFD_RELOC_SH_GOTPLT10BY8
2830 ENUMX
2831   BFD_RELOC_SH_GOTPLT32
2832 ENUMX
2833   BFD_RELOC_SH_SHMEDIA_CODE
2834 ENUMX
2835   BFD_RELOC_SH_IMMU5
2836 ENUMX
2837   BFD_RELOC_SH_IMMS6
2838 ENUMX
2839   BFD_RELOC_SH_IMMS6BY32
2840 ENUMX
2841   BFD_RELOC_SH_IMMU6
2842 ENUMX
2843   BFD_RELOC_SH_IMMS10
2844 ENUMX
2845   BFD_RELOC_SH_IMMS10BY2
2846 ENUMX
2847   BFD_RELOC_SH_IMMS10BY4
2848 ENUMX
2849   BFD_RELOC_SH_IMMS10BY8
2850 ENUMX
2851   BFD_RELOC_SH_IMMS16
2852 ENUMX
2853   BFD_RELOC_SH_IMMU16
2854 ENUMX
2855   BFD_RELOC_SH_IMM_LOW16
2856 ENUMX
2857   BFD_RELOC_SH_IMM_LOW16_PCREL
2858 ENUMX
2859   BFD_RELOC_SH_IMM_MEDLOW16
2860 ENUMX
2861   BFD_RELOC_SH_IMM_MEDLOW16_PCREL
2862 ENUMX
2863   BFD_RELOC_SH_IMM_MEDHI16
2864 ENUMX
2865   BFD_RELOC_SH_IMM_MEDHI16_PCREL
2866 ENUMX
2867   BFD_RELOC_SH_IMM_HI16
2868 ENUMX
2869   BFD_RELOC_SH_IMM_HI16_PCREL
2870 ENUMX
2871   BFD_RELOC_SH_PT_16
2872 ENUMX
2873   BFD_RELOC_SH_TLS_GD_32
2874 ENUMX
2875   BFD_RELOC_SH_TLS_LD_32
2876 ENUMX
2877   BFD_RELOC_SH_TLS_LDO_32
2878 ENUMX
2879   BFD_RELOC_SH_TLS_IE_32
2880 ENUMX
2881   BFD_RELOC_SH_TLS_LE_32
2882 ENUMX
2883   BFD_RELOC_SH_TLS_DTPMOD32
2884 ENUMX
2885   BFD_RELOC_SH_TLS_DTPOFF32
2886 ENUMX
2887   BFD_RELOC_SH_TLS_TPOFF32
2888 ENUMDOC
2889   Renesas / SuperH SH relocs.  Not all of these appear in object files.
2890
2891 ENUM
2892   BFD_RELOC_THUMB_PCREL_BRANCH9
2893 ENUMX
2894   BFD_RELOC_THUMB_PCREL_BRANCH12
2895 ENUMX
2896   BFD_RELOC_THUMB_PCREL_BRANCH23
2897 ENUMDOC
2898   Thumb 23-, 12- and 9-bit pc-relative branches.  The lowest bit must
2899   be zero and is not stored in the instruction.
2900
2901 ENUM
2902   BFD_RELOC_ARC_B22_PCREL
2903 ENUMDOC
2904   ARC Cores relocs.
2905   ARC 22 bit pc-relative branch.  The lowest two bits must be zero and are
2906   not stored in the instruction.  The high 20 bits are installed in bits 26
2907   through 7 of the instruction.
2908 ENUM
2909   BFD_RELOC_ARC_B26
2910 ENUMDOC
2911   ARC 26 bit absolute branch.  The lowest two bits must be zero and are not
2912   stored in the instruction.  The high 24 bits are installed in bits 23
2913   through 0.
2914
2915 ENUM
2916   BFD_RELOC_D10V_10_PCREL_R
2917 ENUMDOC
2918   Mitsubishi D10V relocs.
2919   This is a 10-bit reloc with the right 2 bits
2920   assumed to be 0.
2921 ENUM
2922   BFD_RELOC_D10V_10_PCREL_L
2923 ENUMDOC
2924   Mitsubishi D10V relocs.
2925   This is a 10-bit reloc with the right 2 bits
2926   assumed to be 0.  This is the same as the previous reloc
2927   except it is in the left container, i.e.,
2928   shifted left 15 bits.
2929 ENUM
2930   BFD_RELOC_D10V_18
2931 ENUMDOC
2932   This is an 18-bit reloc with the right 2 bits
2933   assumed to be 0.
2934 ENUM
2935   BFD_RELOC_D10V_18_PCREL
2936 ENUMDOC
2937   This is an 18-bit reloc with the right 2 bits
2938   assumed to be 0.
2939
2940 ENUM
2941   BFD_RELOC_D30V_6
2942 ENUMDOC
2943   Mitsubishi D30V relocs.
2944   This is a 6-bit absolute reloc.
2945 ENUM
2946   BFD_RELOC_D30V_9_PCREL
2947 ENUMDOC
2948   This is a 6-bit pc-relative reloc with
2949   the right 3 bits assumed to be 0.
2950 ENUM
2951   BFD_RELOC_D30V_9_PCREL_R
2952 ENUMDOC
2953   This is a 6-bit pc-relative reloc with
2954   the right 3 bits assumed to be 0. Same
2955   as the previous reloc but on the right side
2956   of the container.
2957 ENUM
2958   BFD_RELOC_D30V_15
2959 ENUMDOC
2960   This is a 12-bit absolute reloc with the
2961   right 3 bitsassumed to be 0.
2962 ENUM
2963   BFD_RELOC_D30V_15_PCREL
2964 ENUMDOC
2965   This is a 12-bit pc-relative reloc with
2966   the right 3 bits assumed to be 0.
2967 ENUM
2968   BFD_RELOC_D30V_15_PCREL_R
2969 ENUMDOC
2970   This is a 12-bit pc-relative reloc with
2971   the right 3 bits assumed to be 0. Same
2972   as the previous reloc but on the right side
2973   of the container.
2974 ENUM
2975   BFD_RELOC_D30V_21
2976 ENUMDOC
2977   This is an 18-bit absolute reloc with
2978   the right 3 bits assumed to be 0.
2979 ENUM
2980   BFD_RELOC_D30V_21_PCREL
2981 ENUMDOC
2982   This is an 18-bit pc-relative reloc with
2983   the right 3 bits assumed to be 0.
2984 ENUM
2985   BFD_RELOC_D30V_21_PCREL_R
2986 ENUMDOC
2987   This is an 18-bit pc-relative reloc with
2988   the right 3 bits assumed to be 0. Same
2989   as the previous reloc but on the right side
2990   of the container.
2991 ENUM
2992   BFD_RELOC_D30V_32
2993 ENUMDOC
2994   This is a 32-bit absolute reloc.
2995 ENUM
2996   BFD_RELOC_D30V_32_PCREL
2997 ENUMDOC
2998   This is a 32-bit pc-relative reloc.
2999
3000 ENUM
3001   BFD_RELOC_DLX_HI16_S
3002 ENUMDOC
3003   DLX relocs
3004 ENUM
3005   BFD_RELOC_DLX_LO16
3006 ENUMDOC
3007   DLX relocs
3008 ENUM
3009   BFD_RELOC_DLX_JMP26
3010 ENUMDOC
3011   DLX relocs
3012
3013 ENUM
3014   BFD_RELOC_M32R_24
3015 ENUMDOC
3016   Renesas M32R (formerly Mitsubishi M32R) relocs.
3017   This is a 24 bit absolute address.
3018 ENUM
3019   BFD_RELOC_M32R_10_PCREL
3020 ENUMDOC
3021   This is a 10-bit pc-relative reloc with the right 2 bits assumed to be 0.
3022 ENUM
3023   BFD_RELOC_M32R_18_PCREL
3024 ENUMDOC
3025   This is an 18-bit reloc with the right 2 bits assumed to be 0.
3026 ENUM
3027   BFD_RELOC_M32R_26_PCREL
3028 ENUMDOC
3029   This is a 26-bit reloc with the right 2 bits assumed to be 0.
3030 ENUM
3031   BFD_RELOC_M32R_HI16_ULO
3032 ENUMDOC
3033   This is a 16-bit reloc containing the high 16 bits of an address
3034   used when the lower 16 bits are treated as unsigned.
3035 ENUM
3036   BFD_RELOC_M32R_HI16_SLO
3037 ENUMDOC
3038   This is a 16-bit reloc containing the high 16 bits of an address
3039   used when the lower 16 bits are treated as signed.
3040 ENUM
3041   BFD_RELOC_M32R_LO16
3042 ENUMDOC
3043   This is a 16-bit reloc containing the lower 16 bits of an address.
3044 ENUM
3045   BFD_RELOC_M32R_SDA16
3046 ENUMDOC
3047   This is a 16-bit reloc containing the small data area offset for use in
3048   add3, load, and store instructions.
3049 ENUM
3050   BFD_RELOC_M32R_GOT24
3051 ENUMX
3052   BFD_RELOC_M32R_26_PLTREL
3053 ENUMX
3054   BFD_RELOC_M32R_COPY
3055 ENUMX
3056   BFD_RELOC_M32R_GLOB_DAT
3057 ENUMX
3058   BFD_RELOC_M32R_JMP_SLOT
3059 ENUMX
3060   BFD_RELOC_M32R_RELATIVE
3061 ENUMX
3062   BFD_RELOC_M32R_GOTOFF
3063 ENUMX
3064   BFD_RELOC_M32R_GOTOFF_HI_ULO
3065 ENUMX
3066   BFD_RELOC_M32R_GOTOFF_HI_SLO
3067 ENUMX
3068   BFD_RELOC_M32R_GOTOFF_LO
3069 ENUMX
3070   BFD_RELOC_M32R_GOTPC24
3071 ENUMX
3072   BFD_RELOC_M32R_GOT16_HI_ULO
3073 ENUMX
3074   BFD_RELOC_M32R_GOT16_HI_SLO
3075 ENUMX
3076   BFD_RELOC_M32R_GOT16_LO
3077 ENUMX
3078   BFD_RELOC_M32R_GOTPC_HI_ULO
3079 ENUMX
3080   BFD_RELOC_M32R_GOTPC_HI_SLO
3081 ENUMX
3082   BFD_RELOC_M32R_GOTPC_LO
3083 ENUMDOC
3084   For PIC.
3085
3086
3087 ENUM
3088   BFD_RELOC_V850_9_PCREL
3089 ENUMDOC
3090   This is a 9-bit reloc
3091 ENUM
3092   BFD_RELOC_V850_22_PCREL
3093 ENUMDOC
3094   This is a 22-bit reloc
3095
3096 ENUM
3097   BFD_RELOC_V850_SDA_16_16_OFFSET
3098 ENUMDOC
3099   This is a 16 bit offset from the short data area pointer.
3100 ENUM
3101   BFD_RELOC_V850_SDA_15_16_OFFSET
3102 ENUMDOC
3103   This is a 16 bit offset (of which only 15 bits are used) from the
3104   short data area pointer.
3105 ENUM
3106   BFD_RELOC_V850_ZDA_16_16_OFFSET
3107 ENUMDOC
3108   This is a 16 bit offset from the zero data area pointer.
3109 ENUM
3110   BFD_RELOC_V850_ZDA_15_16_OFFSET
3111 ENUMDOC
3112   This is a 16 bit offset (of which only 15 bits are used) from the
3113   zero data area pointer.
3114 ENUM
3115   BFD_RELOC_V850_TDA_6_8_OFFSET
3116 ENUMDOC
3117   This is an 8 bit offset (of which only 6 bits are used) from the
3118   tiny data area pointer.
3119 ENUM
3120   BFD_RELOC_V850_TDA_7_8_OFFSET
3121 ENUMDOC
3122   This is an 8bit offset (of which only 7 bits are used) from the tiny
3123   data area pointer.
3124 ENUM
3125   BFD_RELOC_V850_TDA_7_7_OFFSET
3126 ENUMDOC
3127   This is a 7 bit offset from the tiny data area pointer.
3128 ENUM
3129   BFD_RELOC_V850_TDA_16_16_OFFSET
3130 ENUMDOC
3131   This is a 16 bit offset from the tiny data area pointer.
3132 COMMENT
3133 ENUM
3134   BFD_RELOC_V850_TDA_4_5_OFFSET
3135 ENUMDOC
3136   This is a 5 bit offset (of which only 4 bits are used) from the tiny
3137   data area pointer.
3138 ENUM
3139   BFD_RELOC_V850_TDA_4_4_OFFSET
3140 ENUMDOC
3141   This is a 4 bit offset from the tiny data area pointer.
3142 ENUM
3143   BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
3144 ENUMDOC
3145   This is a 16 bit offset from the short data area pointer, with the
3146   bits placed non-contiguously in the instruction.
3147 ENUM
3148   BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
3149 ENUMDOC
3150   This is a 16 bit offset from the zero data area pointer, with the
3151   bits placed non-contiguously in the instruction.
3152 ENUM
3153   BFD_RELOC_V850_CALLT_6_7_OFFSET
3154 ENUMDOC
3155   This is a 6 bit offset from the call table base pointer.
3156 ENUM
3157   BFD_RELOC_V850_CALLT_16_16_OFFSET
3158 ENUMDOC
3159   This is a 16 bit offset from the call table base pointer.
3160 ENUM
3161   BFD_RELOC_V850_LONGCALL
3162 ENUMDOC
3163   Used for relaxing indirect function calls.
3164 ENUM
3165   BFD_RELOC_V850_LONGJUMP
3166 ENUMDOC
3167   Used for relaxing indirect jumps.
3168 ENUM
3169   BFD_RELOC_V850_ALIGN
3170 ENUMDOC
3171   Used to maintain alignment whilst relaxing.
3172 ENUM
3173   BFD_RELOC_V850_LO16_SPLIT_OFFSET
3174 ENUMDOC
3175   This is a variation of BFD_RELOC_LO16 that can be used in v850e ld.bu
3176   instructions.
3177 ENUM
3178   BFD_RELOC_MN10300_32_PCREL
3179 ENUMDOC
3180   This is a 32bit pcrel reloc for the mn10300, offset by two bytes in the
3181   instruction.
3182 ENUM
3183   BFD_RELOC_MN10300_16_PCREL
3184 ENUMDOC
3185   This is a 16bit pcrel reloc for the mn10300, offset by two bytes in the
3186   instruction.
3187
3188 ENUM
3189   BFD_RELOC_TIC30_LDP
3190 ENUMDOC
3191   This is a 8bit DP reloc for the tms320c30, where the most
3192   significant 8 bits of a 24 bit word are placed into the least
3193   significant 8 bits of the opcode.
3194
3195 ENUM
3196   BFD_RELOC_TIC54X_PARTLS7
3197 ENUMDOC
3198   This is a 7bit reloc for the tms320c54x, where the least
3199   significant 7 bits of a 16 bit word are placed into the least
3200   significant 7 bits of the opcode.
3201
3202 ENUM
3203   BFD_RELOC_TIC54X_PARTMS9
3204 ENUMDOC
3205   This is a 9bit DP reloc for the tms320c54x, where the most
3206   significant 9 bits of a 16 bit word are placed into the least
3207   significant 9 bits of the opcode.
3208
3209 ENUM
3210   BFD_RELOC_TIC54X_23
3211 ENUMDOC
3212   This is an extended address 23-bit reloc for the tms320c54x.
3213
3214 ENUM
3215   BFD_RELOC_TIC54X_16_OF_23
3216 ENUMDOC
3217   This is a 16-bit reloc for the tms320c54x, where the least
3218   significant 16 bits of a 23-bit extended address are placed into
3219   the opcode.
3220
3221 ENUM
3222   BFD_RELOC_TIC54X_MS7_OF_23
3223 ENUMDOC
3224   This is a reloc for the tms320c54x, where the most
3225   significant 7 bits of a 23-bit extended address are placed into
3226   the opcode.
3227
3228 ENUM
3229   BFD_RELOC_FR30_48
3230 ENUMDOC
3231   This is a 48 bit reloc for the FR30 that stores 32 bits.
3232 ENUM
3233   BFD_RELOC_FR30_20
3234 ENUMDOC
3235   This is a 32 bit reloc for the FR30 that stores 20 bits split up into
3236   two sections.
3237 ENUM
3238   BFD_RELOC_FR30_6_IN_4
3239 ENUMDOC
3240   This is a 16 bit reloc for the FR30 that stores a 6 bit word offset in
3241   4 bits.
3242 ENUM
3243   BFD_RELOC_FR30_8_IN_8
3244 ENUMDOC
3245   This is a 16 bit reloc for the FR30 that stores an 8 bit byte offset
3246   into 8 bits.
3247 ENUM
3248   BFD_RELOC_FR30_9_IN_8
3249 ENUMDOC
3250   This is a 16 bit reloc for the FR30 that stores a 9 bit short offset
3251   into 8 bits.
3252 ENUM
3253   BFD_RELOC_FR30_10_IN_8
3254 ENUMDOC
3255   This is a 16 bit reloc for the FR30 that stores a 10 bit word offset
3256   into 8 bits.
3257 ENUM
3258   BFD_RELOC_FR30_9_PCREL
3259 ENUMDOC
3260   This is a 16 bit reloc for the FR30 that stores a 9 bit pc relative
3261   short offset into 8 bits.
3262 ENUM
3263   BFD_RELOC_FR30_12_PCREL
3264 ENUMDOC
3265   This is a 16 bit reloc for the FR30 that stores a 12 bit pc relative
3266   short offset into 11 bits.
3267
3268 ENUM
3269   BFD_RELOC_MCORE_PCREL_IMM8BY4
3270 ENUMX
3271   BFD_RELOC_MCORE_PCREL_IMM11BY2
3272 ENUMX
3273   BFD_RELOC_MCORE_PCREL_IMM4BY2
3274 ENUMX
3275   BFD_RELOC_MCORE_PCREL_32
3276 ENUMX
3277   BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2
3278 ENUMX
3279   BFD_RELOC_MCORE_RVA
3280 ENUMDOC
3281   Motorola Mcore relocations.
3282
3283 ENUM
3284   BFD_RELOC_MMIX_GETA
3285 ENUMX
3286   BFD_RELOC_MMIX_GETA_1
3287 ENUMX
3288   BFD_RELOC_MMIX_GETA_2
3289 ENUMX
3290   BFD_RELOC_MMIX_GETA_3
3291 ENUMDOC
3292   These are relocations for the GETA instruction.
3293 ENUM
3294   BFD_RELOC_MMIX_CBRANCH
3295 ENUMX
3296   BFD_RELOC_MMIX_CBRANCH_J
3297 ENUMX
3298   BFD_RELOC_MMIX_CBRANCH_1
3299 ENUMX
3300   BFD_RELOC_MMIX_CBRANCH_2
3301 ENUMX
3302   BFD_RELOC_MMIX_CBRANCH_3
3303 ENUMDOC
3304   These are relocations for a conditional branch instruction.
3305 ENUM
3306   BFD_RELOC_MMIX_PUSHJ
3307 ENUMX
3308   BFD_RELOC_MMIX_PUSHJ_1
3309 ENUMX
3310   BFD_RELOC_MMIX_PUSHJ_2
3311 ENUMX
3312   BFD_RELOC_MMIX_PUSHJ_3
3313 ENUMX
3314   BFD_RELOC_MMIX_PUSHJ_STUBBABLE
3315 ENUMDOC
3316   These are relocations for the PUSHJ instruction.
3317 ENUM
3318   BFD_RELOC_MMIX_JMP
3319 ENUMX
3320   BFD_RELOC_MMIX_JMP_1
3321 ENUMX
3322   BFD_RELOC_MMIX_JMP_2
3323 ENUMX
3324   BFD_RELOC_MMIX_JMP_3
3325 ENUMDOC
3326   These are relocations for the JMP instruction.
3327 ENUM
3328   BFD_RELOC_MMIX_ADDR19
3329 ENUMDOC
3330   This is a relocation for a relative address as in a GETA instruction or
3331   a branch.
3332 ENUM
3333   BFD_RELOC_MMIX_ADDR27
3334 ENUMDOC
3335   This is a relocation for a relative address as in a JMP instruction.
3336 ENUM
3337   BFD_RELOC_MMIX_REG_OR_BYTE
3338 ENUMDOC
3339   This is a relocation for an instruction field that may be a general
3340   register or a value 0..255.
3341 ENUM
3342   BFD_RELOC_MMIX_REG
3343 ENUMDOC
3344   This is a relocation for an instruction field that may be a general
3345   register.
3346 ENUM
3347   BFD_RELOC_MMIX_BASE_PLUS_OFFSET
3348 ENUMDOC
3349   This is a relocation for two instruction fields holding a register and
3350   an offset, the equivalent of the relocation.
3351 ENUM
3352   BFD_RELOC_MMIX_LOCAL
3353 ENUMDOC
3354   This relocation is an assertion that the expression is not allocated as
3355   a global register.  It does not modify contents.
3356
3357 ENUM
3358   BFD_RELOC_AVR_7_PCREL
3359 ENUMDOC
3360   This is a 16 bit reloc for the AVR that stores 8 bit pc relative
3361   short offset into 7 bits.
3362 ENUM
3363   BFD_RELOC_AVR_13_PCREL
3364 ENUMDOC
3365   This is a 16 bit reloc for the AVR that stores 13 bit pc relative
3366   short offset into 12 bits.
3367 ENUM
3368   BFD_RELOC_AVR_16_PM
3369 ENUMDOC
3370   This is a 16 bit reloc for the AVR that stores 17 bit value (usually
3371   program memory address) into 16 bits.
3372 ENUM
3373   BFD_RELOC_AVR_LO8_LDI
3374 ENUMDOC
3375   This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3376   data memory address) into 8 bit immediate value of LDI insn.
3377 ENUM
3378   BFD_RELOC_AVR_HI8_LDI
3379 ENUMDOC
3380   This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3381   of data memory address) into 8 bit immediate value of LDI insn.
3382 ENUM
3383   BFD_RELOC_AVR_HH8_LDI
3384 ENUMDOC
3385   This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3386   of program memory address) into 8 bit immediate value of LDI insn.
3387 ENUM
3388   BFD_RELOC_AVR_LO8_LDI_NEG
3389 ENUMDOC
3390   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3391   (usually data memory address) into 8 bit immediate value of SUBI insn.
3392 ENUM
3393   BFD_RELOC_AVR_HI8_LDI_NEG
3394 ENUMDOC
3395   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3396   (high 8 bit of data memory address) into 8 bit immediate value of
3397   SUBI insn.
3398 ENUM
3399   BFD_RELOC_AVR_HH8_LDI_NEG
3400 ENUMDOC
3401   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3402   (most high 8 bit of program memory address) into 8 bit immediate value
3403   of LDI or SUBI insn.
3404 ENUM
3405   BFD_RELOC_AVR_LO8_LDI_PM
3406 ENUMDOC
3407   This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3408   command address) into 8 bit immediate value of LDI insn.
3409 ENUM
3410   BFD_RELOC_AVR_HI8_LDI_PM
3411 ENUMDOC
3412   This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3413   of command address) into 8 bit immediate value of LDI insn.
3414 ENUM
3415   BFD_RELOC_AVR_HH8_LDI_PM
3416 ENUMDOC
3417   This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3418   of command address) into 8 bit immediate value of LDI insn.
3419 ENUM
3420   BFD_RELOC_AVR_LO8_LDI_PM_NEG
3421 ENUMDOC
3422   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3423   (usually command address) into 8 bit immediate value of SUBI insn.
3424 ENUM
3425   BFD_RELOC_AVR_HI8_LDI_PM_NEG
3426 ENUMDOC
3427   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3428   (high 8 bit of 16 bit command address) into 8 bit immediate value
3429   of SUBI insn.
3430 ENUM
3431   BFD_RELOC_AVR_HH8_LDI_PM_NEG
3432 ENUMDOC
3433   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3434   (high 6 bit of 22 bit command address) into 8 bit immediate
3435   value of SUBI insn.
3436 ENUM
3437   BFD_RELOC_AVR_CALL
3438 ENUMDOC
3439   This is a 32 bit reloc for the AVR that stores 23 bit value
3440   into 22 bits.
3441 ENUM
3442   BFD_RELOC_AVR_LDI
3443 ENUMDOC
3444   This is a 16 bit reloc for the AVR that stores all needed bits
3445   for absolute addressing with ldi with overflow check to linktime
3446 ENUM
3447   BFD_RELOC_AVR_6
3448 ENUMDOC
3449   This is a 6 bit reloc for the AVR that stores offset for ldd/std
3450   instructions
3451 ENUM
3452   BFD_RELOC_AVR_6_ADIW
3453 ENUMDOC
3454   This is a 6 bit reloc for the AVR that stores offset for adiw/sbiw
3455   instructions
3456
3457 ENUM
3458   BFD_RELOC_390_12
3459 ENUMDOC
3460    Direct 12 bit.
3461 ENUM
3462   BFD_RELOC_390_GOT12
3463 ENUMDOC
3464   12 bit GOT offset.
3465 ENUM
3466   BFD_RELOC_390_PLT32
3467 ENUMDOC
3468   32 bit PC relative PLT address.
3469 ENUM
3470   BFD_RELOC_390_COPY
3471 ENUMDOC
3472   Copy symbol at runtime.
3473 ENUM
3474   BFD_RELOC_390_GLOB_DAT
3475 ENUMDOC
3476   Create GOT entry.
3477 ENUM
3478   BFD_RELOC_390_JMP_SLOT
3479 ENUMDOC
3480   Create PLT entry.
3481 ENUM
3482   BFD_RELOC_390_RELATIVE
3483 ENUMDOC
3484   Adjust by program base.
3485 ENUM
3486   BFD_RELOC_390_GOTPC
3487 ENUMDOC
3488   32 bit PC relative offset to GOT.
3489 ENUM
3490   BFD_RELOC_390_GOT16
3491 ENUMDOC
3492   16 bit GOT offset.
3493 ENUM
3494   BFD_RELOC_390_PC16DBL
3495 ENUMDOC
3496   PC relative 16 bit shifted by 1.
3497 ENUM
3498   BFD_RELOC_390_PLT16DBL
3499 ENUMDOC
3500   16 bit PC rel. PLT shifted by 1.
3501 ENUM
3502   BFD_RELOC_390_PC32DBL
3503 ENUMDOC
3504   PC relative 32 bit shifted by 1.
3505 ENUM
3506   BFD_RELOC_390_PLT32DBL
3507 ENUMDOC
3508   32 bit PC rel. PLT shifted by 1.
3509 ENUM
3510   BFD_RELOC_390_GOTPCDBL
3511 ENUMDOC
3512   32 bit PC rel. GOT shifted by 1.
3513 ENUM
3514   BFD_RELOC_390_GOT64
3515 ENUMDOC
3516   64 bit GOT offset.
3517 ENUM
3518   BFD_RELOC_390_PLT64
3519 ENUMDOC
3520   64 bit PC relative PLT address.
3521 ENUM
3522   BFD_RELOC_390_GOTENT
3523 ENUMDOC
3524   32 bit rel. offset to GOT entry.
3525 ENUM
3526   BFD_RELOC_390_GOTOFF64
3527 ENUMDOC
3528   64 bit offset to GOT.
3529 ENUM
3530   BFD_RELOC_390_GOTPLT12
3531 ENUMDOC
3532   12-bit offset to symbol-entry within GOT, with PLT handling.
3533 ENUM
3534   BFD_RELOC_390_GOTPLT16
3535 ENUMDOC
3536   16-bit offset to symbol-entry within GOT, with PLT handling.
3537 ENUM
3538   BFD_RELOC_390_GOTPLT32
3539 ENUMDOC
3540   32-bit offset to symbol-entry within GOT, with PLT handling.
3541 ENUM
3542   BFD_RELOC_390_GOTPLT64
3543 ENUMDOC
3544   64-bit offset to symbol-entry within GOT, with PLT handling.
3545 ENUM
3546   BFD_RELOC_390_GOTPLTENT
3547 ENUMDOC
3548   32-bit rel. offset to symbol-entry within GOT, with PLT handling.
3549 ENUM
3550   BFD_RELOC_390_PLTOFF16
3551 ENUMDOC
3552   16-bit rel. offset from the GOT to a PLT entry.
3553 ENUM
3554   BFD_RELOC_390_PLTOFF32
3555 ENUMDOC
3556   32-bit rel. offset from the GOT to a PLT entry.
3557 ENUM
3558   BFD_RELOC_390_PLTOFF64
3559 ENUMDOC
3560   64-bit rel. offset from the GOT to a PLT entry.
3561
3562 ENUM
3563   BFD_RELOC_390_TLS_LOAD
3564 ENUMX
3565   BFD_RELOC_390_TLS_GDCALL
3566 ENUMX
3567   BFD_RELOC_390_TLS_LDCALL
3568 ENUMX
3569   BFD_RELOC_390_TLS_GD32
3570 ENUMX
3571   BFD_RELOC_390_TLS_GD64
3572 ENUMX
3573   BFD_RELOC_390_TLS_GOTIE12
3574 ENUMX
3575   BFD_RELOC_390_TLS_GOTIE32
3576 ENUMX
3577   BFD_RELOC_390_TLS_GOTIE64
3578 ENUMX
3579   BFD_RELOC_390_TLS_LDM32
3580 ENUMX
3581   BFD_RELOC_390_TLS_LDM64
3582 ENUMX
3583   BFD_RELOC_390_TLS_IE32
3584 ENUMX
3585   BFD_RELOC_390_TLS_IE64
3586 ENUMX
3587   BFD_RELOC_390_TLS_IEENT
3588 ENUMX
3589   BFD_RELOC_390_TLS_LE32
3590 ENUMX
3591   BFD_RELOC_390_TLS_LE64
3592 ENUMX
3593   BFD_RELOC_390_TLS_LDO32
3594 ENUMX
3595   BFD_RELOC_390_TLS_LDO64
3596 ENUMX
3597   BFD_RELOC_390_TLS_DTPMOD
3598 ENUMX
3599   BFD_RELOC_390_TLS_DTPOFF
3600 ENUMX
3601   BFD_RELOC_390_TLS_TPOFF
3602 ENUMDOC
3603   s390 tls relocations.
3604
3605 ENUM
3606   BFD_RELOC_390_20
3607 ENUMX
3608   BFD_RELOC_390_GOT20
3609 ENUMX
3610   BFD_RELOC_390_GOTPLT20
3611 ENUMX
3612   BFD_RELOC_390_TLS_GOTIE20
3613 ENUMDOC
3614   Long displacement extension.
3615
3616 ENUM
3617   BFD_RELOC_IP2K_FR9
3618 ENUMDOC
3619   Scenix IP2K - 9-bit register number / data address
3620 ENUM
3621   BFD_RELOC_IP2K_BANK
3622 ENUMDOC
3623   Scenix IP2K - 4-bit register/data bank number
3624 ENUM
3625   BFD_RELOC_IP2K_ADDR16CJP
3626 ENUMDOC
3627   Scenix IP2K - low 13 bits of instruction word address
3628 ENUM
3629   BFD_RELOC_IP2K_PAGE3
3630 ENUMDOC
3631   Scenix IP2K - high 3 bits of instruction word address
3632 ENUM
3633   BFD_RELOC_IP2K_LO8DATA
3634 ENUMX
3635   BFD_RELOC_IP2K_HI8DATA
3636 ENUMX
3637   BFD_RELOC_IP2K_EX8DATA
3638 ENUMDOC
3639   Scenix IP2K - ext/low/high 8 bits of data address
3640 ENUM
3641   BFD_RELOC_IP2K_LO8INSN
3642 ENUMX
3643   BFD_RELOC_IP2K_HI8INSN
3644 ENUMDOC
3645   Scenix IP2K - low/high 8 bits of instruction word address
3646 ENUM
3647   BFD_RELOC_IP2K_PC_SKIP
3648 ENUMDOC
3649   Scenix IP2K - even/odd PC modifier to modify snb pcl.0
3650 ENUM
3651   BFD_RELOC_IP2K_TEXT
3652 ENUMDOC
3653   Scenix IP2K - 16 bit word address in text section.
3654 ENUM
3655   BFD_RELOC_IP2K_FR_OFFSET
3656 ENUMDOC
3657   Scenix IP2K - 7-bit sp or dp offset
3658 ENUM
3659   BFD_RELOC_VPE4KMATH_DATA
3660 ENUMX
3661   BFD_RELOC_VPE4KMATH_INSN
3662 ENUMDOC
3663   Scenix VPE4K coprocessor - data/insn-space addressing
3664
3665 ENUM
3666   BFD_RELOC_VTABLE_INHERIT
3667 ENUMX
3668   BFD_RELOC_VTABLE_ENTRY
3669 ENUMDOC
3670   These two relocations are used by the linker to determine which of
3671   the entries in a C++ virtual function table are actually used.  When
3672   the --gc-sections option is given, the linker will zero out the entries
3673   that are not used, so that the code for those functions need not be
3674   included in the output.
3675
3676   VTABLE_INHERIT is a zero-space relocation used to describe to the
3677   linker the inheritance tree of a C++ virtual function table.  The
3678   relocation's symbol should be the parent class' vtable, and the
3679   relocation should be located at the child vtable.
3680
3681   VTABLE_ENTRY is a zero-space relocation that describes the use of a
3682   virtual function table entry.  The reloc's symbol should refer to the
3683   table of the class mentioned in the code.  Off of that base, an offset
3684   describes the entry that is being used.  For Rela hosts, this offset
3685   is stored in the reloc's addend.  For Rel hosts, we are forced to put
3686   this offset in the reloc's section offset.
3687
3688 ENUM
3689   BFD_RELOC_IA64_IMM14
3690 ENUMX
3691   BFD_RELOC_IA64_IMM22
3692 ENUMX
3693   BFD_RELOC_IA64_IMM64
3694 ENUMX
3695   BFD_RELOC_IA64_DIR32MSB
3696 ENUMX
3697   BFD_RELOC_IA64_DIR32LSB
3698 ENUMX
3699   BFD_RELOC_IA64_DIR64MSB
3700 ENUMX
3701   BFD_RELOC_IA64_DIR64LSB
3702 ENUMX
3703   BFD_RELOC_IA64_GPREL22
3704 ENUMX
3705   BFD_RELOC_IA64_GPREL64I
3706 ENUMX
3707   BFD_RELOC_IA64_GPREL32MSB
3708 ENUMX
3709   BFD_RELOC_IA64_GPREL32LSB
3710 ENUMX
3711   BFD_RELOC_IA64_GPREL64MSB
3712 ENUMX
3713   BFD_RELOC_IA64_GPREL64LSB
3714 ENUMX
3715   BFD_RELOC_IA64_LTOFF22
3716 ENUMX
3717   BFD_RELOC_IA64_LTOFF64I
3718 ENUMX
3719   BFD_RELOC_IA64_PLTOFF22
3720 ENUMX
3721   BFD_RELOC_IA64_PLTOFF64I
3722 ENUMX
3723   BFD_RELOC_IA64_PLTOFF64MSB
3724 ENUMX
3725   BFD_RELOC_IA64_PLTOFF64LSB
3726 ENUMX
3727   BFD_RELOC_IA64_FPTR64I
3728 ENUMX
3729   BFD_RELOC_IA64_FPTR32MSB
3730 ENUMX
3731   BFD_RELOC_IA64_FPTR32LSB
3732 ENUMX
3733   BFD_RELOC_IA64_FPTR64MSB
3734 ENUMX
3735   BFD_RELOC_IA64_FPTR64LSB
3736 ENUMX
3737   BFD_RELOC_IA64_PCREL21B
3738 ENUMX
3739   BFD_RELOC_IA64_PCREL21BI
3740 ENUMX
3741   BFD_RELOC_IA64_PCREL21M
3742 ENUMX
3743   BFD_RELOC_IA64_PCREL21F
3744 ENUMX
3745   BFD_RELOC_IA64_PCREL22
3746 ENUMX
3747   BFD_RELOC_IA64_PCREL60B
3748 ENUMX
3749   BFD_RELOC_IA64_PCREL64I
3750 ENUMX
3751   BFD_RELOC_IA64_PCREL32MSB
3752 ENUMX
3753   BFD_RELOC_IA64_PCREL32LSB
3754 ENUMX
3755   BFD_RELOC_IA64_PCREL64MSB
3756 ENUMX
3757   BFD_RELOC_IA64_PCREL64LSB
3758 ENUMX
3759   BFD_RELOC_IA64_LTOFF_FPTR22
3760 ENUMX
3761   BFD_RELOC_IA64_LTOFF_FPTR64I
3762 ENUMX
3763   BFD_RELOC_IA64_LTOFF_FPTR32MSB
3764 ENUMX
3765   BFD_RELOC_IA64_LTOFF_FPTR32LSB
3766 ENUMX
3767   BFD_RELOC_IA64_LTOFF_FPTR64MSB
3768 ENUMX
3769   BFD_RELOC_IA64_LTOFF_FPTR64LSB
3770 ENUMX
3771   BFD_RELOC_IA64_SEGREL32MSB
3772 ENUMX
3773   BFD_RELOC_IA64_SEGREL32LSB
3774 ENUMX
3775   BFD_RELOC_IA64_SEGREL64MSB
3776 ENUMX
3777   BFD_RELOC_IA64_SEGREL64LSB
3778 ENUMX
3779   BFD_RELOC_IA64_SECREL32MSB
3780 ENUMX
3781   BFD_RELOC_IA64_SECREL32LSB
3782 ENUMX
3783   BFD_RELOC_IA64_SECREL64MSB
3784 ENUMX
3785   BFD_RELOC_IA64_SECREL64LSB
3786 ENUMX
3787   BFD_RELOC_IA64_REL32MSB
3788 ENUMX
3789   BFD_RELOC_IA64_REL32LSB
3790 ENUMX
3791   BFD_RELOC_IA64_REL64MSB
3792 ENUMX
3793   BFD_RELOC_IA64_REL64LSB
3794 ENUMX
3795   BFD_RELOC_IA64_LTV32MSB
3796 ENUMX
3797   BFD_RELOC_IA64_LTV32LSB
3798 ENUMX
3799   BFD_RELOC_IA64_LTV64MSB
3800 ENUMX
3801   BFD_RELOC_IA64_LTV64LSB
3802 ENUMX
3803   BFD_RELOC_IA64_IPLTMSB
3804 ENUMX
3805   BFD_RELOC_IA64_IPLTLSB
3806 ENUMX
3807   BFD_RELOC_IA64_COPY
3808 ENUMX
3809   BFD_RELOC_IA64_LTOFF22X
3810 ENUMX
3811   BFD_RELOC_IA64_LDXMOV
3812 ENUMX
3813   BFD_RELOC_IA64_TPREL14
3814 ENUMX
3815   BFD_RELOC_IA64_TPREL22
3816 ENUMX
3817   BFD_RELOC_IA64_TPREL64I
3818 ENUMX
3819   BFD_RELOC_IA64_TPREL64MSB
3820 ENUMX
3821   BFD_RELOC_IA64_TPREL64LSB
3822 ENUMX
3823   BFD_RELOC_IA64_LTOFF_TPREL22
3824 ENUMX
3825   BFD_RELOC_IA64_DTPMOD64MSB
3826 ENUMX
3827   BFD_RELOC_IA64_DTPMOD64LSB
3828 ENUMX
3829   BFD_RELOC_IA64_LTOFF_DTPMOD22
3830 ENUMX
3831   BFD_RELOC_IA64_DTPREL14
3832 ENUMX
3833   BFD_RELOC_IA64_DTPREL22
3834 ENUMX
3835   BFD_RELOC_IA64_DTPREL64I
3836 ENUMX
3837   BFD_RELOC_IA64_DTPREL32MSB
3838 ENUMX
3839   BFD_RELOC_IA64_DTPREL32LSB
3840 ENUMX
3841   BFD_RELOC_IA64_DTPREL64MSB
3842 ENUMX
3843   BFD_RELOC_IA64_DTPREL64LSB
3844 ENUMX
3845   BFD_RELOC_IA64_LTOFF_DTPREL22
3846 ENUMDOC
3847   Intel IA64 Relocations.
3848
3849 ENUM
3850   BFD_RELOC_M68HC11_HI8
3851 ENUMDOC
3852   Motorola 68HC11 reloc.
3853   This is the 8 bit high part of an absolute address.
3854 ENUM
3855   BFD_RELOC_M68HC11_LO8
3856 ENUMDOC
3857   Motorola 68HC11 reloc.
3858   This is the 8 bit low part of an absolute address.
3859 ENUM
3860   BFD_RELOC_M68HC11_3B
3861 ENUMDOC
3862   Motorola 68HC11 reloc.
3863   This is the 3 bit of a value.
3864 ENUM
3865   BFD_RELOC_M68HC11_RL_JUMP
3866 ENUMDOC
3867   Motorola 68HC11 reloc.
3868   This reloc marks the beginning of a jump/call instruction.
3869   It is used for linker relaxation to correctly identify beginning
3870   of instruction and change some branches to use PC-relative
3871   addressing mode.
3872 ENUM
3873   BFD_RELOC_M68HC11_RL_GROUP
3874 ENUMDOC
3875   Motorola 68HC11 reloc.
3876   This reloc marks a group of several instructions that gcc generates
3877   and for which the linker relaxation pass can modify and/or remove
3878   some of them.
3879 ENUM
3880   BFD_RELOC_M68HC11_LO16
3881 ENUMDOC
3882   Motorola 68HC11 reloc.
3883   This is the 16-bit lower part of an address.  It is used for 'call'
3884   instruction to specify the symbol address without any special
3885   transformation (due to memory bank window).
3886 ENUM
3887   BFD_RELOC_M68HC11_PAGE
3888 ENUMDOC
3889   Motorola 68HC11 reloc.
3890   This is a 8-bit reloc that specifies the page number of an address.
3891   It is used by 'call' instruction to specify the page number of
3892   the symbol.
3893 ENUM
3894   BFD_RELOC_M68HC11_24
3895 ENUMDOC
3896   Motorola 68HC11 reloc.
3897   This is a 24-bit reloc that represents the address with a 16-bit
3898   value and a 8-bit page number.  The symbol address is transformed
3899   to follow the 16K memory bank of 68HC12 (seen as mapped in the window).
3900 ENUM
3901   BFD_RELOC_M68HC12_5B
3902 ENUMDOC
3903   Motorola 68HC12 reloc.
3904   This is the 5 bits of a value.
3905
3906 ENUM
3907   BFD_RELOC_16C_NUM08
3908 ENUMX
3909   BFD_RELOC_16C_NUM08_C
3910 ENUMX
3911   BFD_RELOC_16C_NUM16
3912 ENUMX
3913   BFD_RELOC_16C_NUM16_C
3914 ENUMX
3915   BFD_RELOC_16C_NUM32
3916 ENUMX
3917   BFD_RELOC_16C_NUM32_C
3918 ENUMX
3919   BFD_RELOC_16C_DISP04
3920 ENUMX
3921   BFD_RELOC_16C_DISP04_C
3922 ENUMX
3923   BFD_RELOC_16C_DISP08
3924 ENUMX
3925   BFD_RELOC_16C_DISP08_C
3926 ENUMX
3927   BFD_RELOC_16C_DISP16
3928 ENUMX
3929   BFD_RELOC_16C_DISP16_C
3930 ENUMX
3931   BFD_RELOC_16C_DISP24
3932 ENUMX
3933   BFD_RELOC_16C_DISP24_C
3934 ENUMX
3935   BFD_RELOC_16C_DISP24a
3936 ENUMX
3937   BFD_RELOC_16C_DISP24a_C
3938 ENUMX
3939   BFD_RELOC_16C_REG04
3940 ENUMX
3941   BFD_RELOC_16C_REG04_C
3942 ENUMX
3943   BFD_RELOC_16C_REG04a
3944 ENUMX
3945   BFD_RELOC_16C_REG04a_C
3946 ENUMX
3947   BFD_RELOC_16C_REG14
3948 ENUMX
3949   BFD_RELOC_16C_REG14_C
3950 ENUMX
3951   BFD_RELOC_16C_REG16
3952 ENUMX
3953   BFD_RELOC_16C_REG16_C
3954 ENUMX
3955   BFD_RELOC_16C_REG20
3956 ENUMX
3957   BFD_RELOC_16C_REG20_C
3958 ENUMX
3959   BFD_RELOC_16C_ABS20
3960 ENUMX
3961   BFD_RELOC_16C_ABS20_C
3962 ENUMX
3963   BFD_RELOC_16C_ABS24
3964 ENUMX
3965   BFD_RELOC_16C_ABS24_C
3966 ENUMX
3967   BFD_RELOC_16C_IMM04
3968 ENUMX
3969   BFD_RELOC_16C_IMM04_C
3970 ENUMX
3971   BFD_RELOC_16C_IMM16
3972 ENUMX
3973   BFD_RELOC_16C_IMM16_C
3974 ENUMX
3975   BFD_RELOC_16C_IMM20
3976 ENUMX
3977   BFD_RELOC_16C_IMM20_C
3978 ENUMX
3979   BFD_RELOC_16C_IMM24
3980 ENUMX
3981   BFD_RELOC_16C_IMM24_C
3982 ENUMX
3983   BFD_RELOC_16C_IMM32
3984 ENUMX
3985   BFD_RELOC_16C_IMM32_C
3986 ENUMDOC
3987   NS CR16C Relocations.
3988
3989 ENUM
3990   BFD_RELOC_CRX_REL4
3991 ENUMX
3992   BFD_RELOC_CRX_REL8
3993 ENUMX
3994   BFD_RELOC_CRX_REL8_CMP
3995 ENUMX
3996   BFD_RELOC_CRX_REL16
3997 ENUMX
3998   BFD_RELOC_CRX_REL24
3999 ENUMX
4000   BFD_RELOC_CRX_REL32
4001 ENUMX
4002   BFD_RELOC_CRX_REGREL12
4003 ENUMX
4004   BFD_RELOC_CRX_REGREL22
4005 ENUMX
4006   BFD_RELOC_CRX_REGREL28
4007 ENUMX
4008   BFD_RELOC_CRX_REGREL32
4009 ENUMX
4010   BFD_RELOC_CRX_ABS16
4011 ENUMX
4012   BFD_RELOC_CRX_ABS32
4013 ENUMX
4014   BFD_RELOC_CRX_NUM8
4015 ENUMX
4016   BFD_RELOC_CRX_NUM16
4017 ENUMX
4018   BFD_RELOC_CRX_NUM32
4019 ENUMX
4020   BFD_RELOC_CRX_IMM16
4021 ENUMX
4022   BFD_RELOC_CRX_IMM32
4023 ENUMX
4024   BFD_RELOC_CRX_SWITCH8
4025 ENUMX
4026   BFD_RELOC_CRX_SWITCH16
4027 ENUMX
4028   BFD_RELOC_CRX_SWITCH32
4029 ENUMDOC
4030   NS CRX Relocations.
4031
4032 ENUM
4033   BFD_RELOC_CRIS_BDISP8
4034 ENUMX
4035   BFD_RELOC_CRIS_UNSIGNED_5
4036 ENUMX
4037   BFD_RELOC_CRIS_SIGNED_6
4038 ENUMX
4039   BFD_RELOC_CRIS_UNSIGNED_6
4040 ENUMX
4041   BFD_RELOC_CRIS_SIGNED_8
4042 ENUMX
4043   BFD_RELOC_CRIS_UNSIGNED_8
4044 ENUMX
4045   BFD_RELOC_CRIS_SIGNED_16
4046 ENUMX
4047   BFD_RELOC_CRIS_UNSIGNED_16
4048 ENUMX
4049   BFD_RELOC_CRIS_LAPCQ_OFFSET
4050 ENUMX
4051   BFD_RELOC_CRIS_UNSIGNED_4
4052 ENUMDOC
4053   These relocs are only used within the CRIS assembler.  They are not
4054   (at present) written to any object files.
4055 ENUM
4056   BFD_RELOC_CRIS_COPY
4057 ENUMX
4058   BFD_RELOC_CRIS_GLOB_DAT
4059 ENUMX
4060   BFD_RELOC_CRIS_JUMP_SLOT
4061 ENUMX
4062   BFD_RELOC_CRIS_RELATIVE
4063 ENUMDOC
4064   Relocs used in ELF shared libraries for CRIS.
4065 ENUM
4066   BFD_RELOC_CRIS_32_GOT
4067 ENUMDOC
4068   32-bit offset to symbol-entry within GOT.
4069 ENUM
4070   BFD_RELOC_CRIS_16_GOT
4071 ENUMDOC
4072   16-bit offset to symbol-entry within GOT.
4073 ENUM
4074   BFD_RELOC_CRIS_32_GOTPLT
4075 ENUMDOC
4076   32-bit offset to symbol-entry within GOT, with PLT handling.
4077 ENUM
4078   BFD_RELOC_CRIS_16_GOTPLT
4079 ENUMDOC
4080   16-bit offset to symbol-entry within GOT, with PLT handling.
4081 ENUM
4082   BFD_RELOC_CRIS_32_GOTREL
4083 ENUMDOC
4084   32-bit offset to symbol, relative to GOT.
4085 ENUM
4086   BFD_RELOC_CRIS_32_PLT_GOTREL
4087 ENUMDOC
4088   32-bit offset to symbol with PLT entry, relative to GOT.
4089 ENUM
4090   BFD_RELOC_CRIS_32_PLT_PCREL
4091 ENUMDOC
4092   32-bit offset to symbol with PLT entry, relative to this relocation.
4093
4094 ENUM
4095   BFD_RELOC_860_COPY
4096 ENUMX
4097   BFD_RELOC_860_GLOB_DAT
4098 ENUMX
4099   BFD_RELOC_860_JUMP_SLOT
4100 ENUMX
4101   BFD_RELOC_860_RELATIVE
4102 ENUMX
4103   BFD_RELOC_860_PC26
4104 ENUMX
4105   BFD_RELOC_860_PLT26
4106 ENUMX
4107   BFD_RELOC_860_PC16
4108 ENUMX
4109   BFD_RELOC_860_LOW0
4110 ENUMX
4111   BFD_RELOC_860_SPLIT0
4112 ENUMX
4113   BFD_RELOC_860_LOW1
4114 ENUMX
4115   BFD_RELOC_860_SPLIT1
4116 ENUMX
4117   BFD_RELOC_860_LOW2
4118 ENUMX
4119   BFD_RELOC_860_SPLIT2
4120 ENUMX
4121   BFD_RELOC_860_LOW3
4122 ENUMX
4123   BFD_RELOC_860_LOGOT0
4124 ENUMX
4125   BFD_RELOC_860_SPGOT0
4126 ENUMX
4127   BFD_RELOC_860_LOGOT1
4128 ENUMX
4129   BFD_RELOC_860_SPGOT1
4130 ENUMX
4131   BFD_RELOC_860_LOGOTOFF0
4132 ENUMX
4133   BFD_RELOC_860_SPGOTOFF0
4134 ENUMX
4135   BFD_RELOC_860_LOGOTOFF1
4136 ENUMX
4137   BFD_RELOC_860_SPGOTOFF1
4138 ENUMX
4139   BFD_RELOC_860_LOGOTOFF2
4140 ENUMX
4141   BFD_RELOC_860_LOGOTOFF3
4142 ENUMX
4143   BFD_RELOC_860_LOPC
4144 ENUMX
4145   BFD_RELOC_860_HIGHADJ
4146 ENUMX
4147   BFD_RELOC_860_HAGOT
4148 ENUMX
4149   BFD_RELOC_860_HAGOTOFF
4150 ENUMX
4151   BFD_RELOC_860_HAPC
4152 ENUMX
4153   BFD_RELOC_860_HIGH
4154 ENUMX
4155   BFD_RELOC_860_HIGOT
4156 ENUMX
4157   BFD_RELOC_860_HIGOTOFF
4158 ENUMDOC
4159   Intel i860 Relocations.
4160
4161 ENUM
4162   BFD_RELOC_OPENRISC_ABS_26
4163 ENUMX
4164   BFD_RELOC_OPENRISC_REL_26
4165 ENUMDOC
4166   OpenRISC Relocations.
4167
4168 ENUM
4169   BFD_RELOC_H8_DIR16A8
4170 ENUMX
4171   BFD_RELOC_H8_DIR16R8
4172 ENUMX
4173   BFD_RELOC_H8_DIR24A8
4174 ENUMX
4175   BFD_RELOC_H8_DIR24R8
4176 ENUMX
4177   BFD_RELOC_H8_DIR32A16
4178 ENUMDOC
4179   H8 elf Relocations.
4180
4181 ENUM
4182   BFD_RELOC_XSTORMY16_REL_12
4183 ENUMX
4184   BFD_RELOC_XSTORMY16_12
4185 ENUMX
4186   BFD_RELOC_XSTORMY16_24
4187 ENUMX
4188   BFD_RELOC_XSTORMY16_FPTR16
4189 ENUMDOC
4190   Sony Xstormy16 Relocations.
4191
4192 ENUM
4193   BFD_RELOC_VAX_GLOB_DAT
4194 ENUMX
4195   BFD_RELOC_VAX_JMP_SLOT
4196 ENUMX
4197   BFD_RELOC_VAX_RELATIVE
4198 ENUMDOC
4199   Relocations used by VAX ELF.
4200
4201 ENUM
4202   BFD_RELOC_MSP430_10_PCREL
4203 ENUMX
4204   BFD_RELOC_MSP430_16_PCREL
4205 ENUMX
4206   BFD_RELOC_MSP430_16
4207 ENUMX
4208   BFD_RELOC_MSP430_16_PCREL_BYTE
4209 ENUMX
4210   BFD_RELOC_MSP430_16_BYTE
4211 ENUMX
4212   BFD_RELOC_MSP430_2X_PCREL
4213 ENUMX
4214   BFD_RELOC_MSP430_RL_PCREL
4215 ENUMDOC
4216   msp430 specific relocation codes
4217
4218 ENUM
4219   BFD_RELOC_IQ2000_OFFSET_16
4220 ENUMX
4221   BFD_RELOC_IQ2000_OFFSET_21
4222 ENUMX
4223   BFD_RELOC_IQ2000_UHI16
4224 ENUMDOC
4225   IQ2000 Relocations.
4226
4227 ENUM
4228   BFD_RELOC_XTENSA_RTLD
4229 ENUMDOC
4230   Special Xtensa relocation used only by PLT entries in ELF shared
4231   objects to indicate that the runtime linker should set the value
4232   to one of its own internal functions or data structures.
4233 ENUM
4234   BFD_RELOC_XTENSA_GLOB_DAT
4235 ENUMX
4236   BFD_RELOC_XTENSA_JMP_SLOT
4237 ENUMX
4238   BFD_RELOC_XTENSA_RELATIVE
4239 ENUMDOC
4240   Xtensa relocations for ELF shared objects.
4241 ENUM
4242   BFD_RELOC_XTENSA_PLT
4243 ENUMDOC
4244   Xtensa relocation used in ELF object files for symbols that may require
4245   PLT entries.  Otherwise, this is just a generic 32-bit relocation.
4246 ENUM
4247   BFD_RELOC_XTENSA_DIFF8
4248 ENUMX
4249   BFD_RELOC_XTENSA_DIFF16
4250 ENUMX
4251   BFD_RELOC_XTENSA_DIFF32
4252 ENUMDOC
4253   Xtensa relocations to mark the difference of two local symbols.
4254   These are only needed to support linker relaxation and can be ignored
4255   when not relaxing.  The field is set to the value of the difference
4256   assuming no relaxation.  The relocation encodes the position of the
4257   first symbol so the linker can determine whether to adjust the field
4258   value.
4259 ENUM
4260   BFD_RELOC_XTENSA_SLOT0_OP
4261 ENUMX
4262   BFD_RELOC_XTENSA_SLOT1_OP
4263 ENUMX
4264   BFD_RELOC_XTENSA_SLOT2_OP
4265 ENUMX
4266   BFD_RELOC_XTENSA_SLOT3_OP
4267 ENUMX
4268   BFD_RELOC_XTENSA_SLOT4_OP
4269 ENUMX
4270   BFD_RELOC_XTENSA_SLOT5_OP
4271 ENUMX
4272   BFD_RELOC_XTENSA_SLOT6_OP
4273 ENUMX
4274   BFD_RELOC_XTENSA_SLOT7_OP
4275 ENUMX
4276   BFD_RELOC_XTENSA_SLOT8_OP
4277 ENUMX
4278   BFD_RELOC_XTENSA_SLOT9_OP
4279 ENUMX
4280   BFD_RELOC_XTENSA_SLOT10_OP
4281 ENUMX
4282   BFD_RELOC_XTENSA_SLOT11_OP
4283 ENUMX
4284   BFD_RELOC_XTENSA_SLOT12_OP
4285 ENUMX
4286   BFD_RELOC_XTENSA_SLOT13_OP
4287 ENUMX
4288   BFD_RELOC_XTENSA_SLOT14_OP
4289 ENUMDOC
4290   Generic Xtensa relocations for instruction operands.  Only the slot
4291   number is encoded in the relocation.  The relocation applies to the
4292   last PC-relative immediate operand, or if there are no PC-relative
4293   immediates, to the last immediate operand.
4294 ENUM
4295   BFD_RELOC_XTENSA_SLOT0_ALT
4296 ENUMX
4297   BFD_RELOC_XTENSA_SLOT1_ALT
4298 ENUMX
4299   BFD_RELOC_XTENSA_SLOT2_ALT
4300 ENUMX
4301   BFD_RELOC_XTENSA_SLOT3_ALT
4302 ENUMX
4303   BFD_RELOC_XTENSA_SLOT4_ALT
4304 ENUMX
4305   BFD_RELOC_XTENSA_SLOT5_ALT
4306 ENUMX
4307   BFD_RELOC_XTENSA_SLOT6_ALT
4308 ENUMX
4309   BFD_RELOC_XTENSA_SLOT7_ALT
4310 ENUMX
4311   BFD_RELOC_XTENSA_SLOT8_ALT
4312 ENUMX
4313   BFD_RELOC_XTENSA_SLOT9_ALT
4314 ENUMX
4315   BFD_RELOC_XTENSA_SLOT10_ALT
4316 ENUMX
4317   BFD_RELOC_XTENSA_SLOT11_ALT
4318 ENUMX
4319   BFD_RELOC_XTENSA_SLOT12_ALT
4320 ENUMX
4321   BFD_RELOC_XTENSA_SLOT13_ALT
4322 ENUMX
4323   BFD_RELOC_XTENSA_SLOT14_ALT
4324 ENUMDOC
4325   Alternate Xtensa relocations.  Only the slot is encoded in the
4326   relocation.  The meaning of these relocations is opcode-specific.
4327 ENUM
4328   BFD_RELOC_XTENSA_OP0
4329 ENUMX
4330   BFD_RELOC_XTENSA_OP1
4331 ENUMX
4332   BFD_RELOC_XTENSA_OP2
4333 ENUMDOC
4334   Xtensa relocations for backward compatibility.  These have all been
4335   replaced by BFD_RELOC_XTENSA_SLOT0_OP.
4336 ENUM
4337   BFD_RELOC_XTENSA_ASM_EXPAND
4338 ENUMDOC
4339   Xtensa relocation to mark that the assembler expanded the
4340   instructions from an original target.  The expansion size is
4341   encoded in the reloc size.
4342 ENUM
4343   BFD_RELOC_XTENSA_ASM_SIMPLIFY
4344 ENUMDOC
4345   Xtensa relocation to mark that the linker should simplify
4346   assembler-expanded instructions.  This is commonly used
4347   internally by the linker after analysis of a
4348   BFD_RELOC_XTENSA_ASM_EXPAND.
4349
4350 ENDSENUM
4351   BFD_RELOC_UNUSED
4352 CODE_FRAGMENT
4353 .
4354 .typedef enum bfd_reloc_code_real bfd_reloc_code_real_type;
4355 */
4356
4357 /*
4358 FUNCTION
4359         bfd_reloc_type_lookup
4360
4361 SYNOPSIS
4362         reloc_howto_type *bfd_reloc_type_lookup
4363           (bfd *abfd, bfd_reloc_code_real_type code);
4364
4365 DESCRIPTION
4366         Return a pointer to a howto structure which, when
4367         invoked, will perform the relocation @var{code} on data from the
4368         architecture noted.
4369
4370 */
4371
4372 reloc_howto_type *
4373 bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
4374 {
4375   return BFD_SEND (abfd, reloc_type_lookup, (abfd, code));
4376 }
4377
4378 static reloc_howto_type bfd_howto_32 =
4379 HOWTO (0, 00, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "VRT32", FALSE, 0xffffffff, 0xffffffff, TRUE);
4380
4381 /*
4382 INTERNAL_FUNCTION
4383         bfd_default_reloc_type_lookup
4384
4385 SYNOPSIS
4386         reloc_howto_type *bfd_default_reloc_type_lookup
4387           (bfd *abfd, bfd_reloc_code_real_type  code);
4388
4389 DESCRIPTION
4390         Provides a default relocation lookup routine for any architecture.
4391
4392 */
4393
4394 reloc_howto_type *
4395 bfd_default_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
4396 {
4397   switch (code)
4398     {
4399     case BFD_RELOC_CTOR:
4400       /* The type of reloc used in a ctor, which will be as wide as the
4401          address - so either a 64, 32, or 16 bitter.  */
4402       switch (bfd_get_arch_info (abfd)->bits_per_address)
4403         {
4404         case 64:
4405           BFD_FAIL ();
4406         case 32:
4407           return &bfd_howto_32;
4408         case 16:
4409           BFD_FAIL ();
4410         default:
4411           BFD_FAIL ();
4412         }
4413     default:
4414       BFD_FAIL ();
4415     }
4416   return NULL;
4417 }
4418
4419 /*
4420 FUNCTION
4421         bfd_get_reloc_code_name
4422
4423 SYNOPSIS
4424         const char *bfd_get_reloc_code_name (bfd_reloc_code_real_type code);
4425
4426 DESCRIPTION
4427         Provides a printable name for the supplied relocation code.
4428         Useful mainly for printing error messages.
4429 */
4430
4431 const char *
4432 bfd_get_reloc_code_name (bfd_reloc_code_real_type code)
4433 {
4434   if (code > BFD_RELOC_UNUSED)
4435     return 0;
4436   return bfd_reloc_code_real_names[code];
4437 }
4438
4439 /*
4440 INTERNAL_FUNCTION
4441         bfd_generic_relax_section
4442
4443 SYNOPSIS
4444         bfd_boolean bfd_generic_relax_section
4445           (bfd *abfd,
4446            asection *section,
4447            struct bfd_link_info *,
4448            bfd_boolean *);
4449
4450 DESCRIPTION
4451         Provides default handling for relaxing for back ends which
4452         don't do relaxing.
4453 */
4454
4455 bfd_boolean
4456 bfd_generic_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
4457                            asection *section ATTRIBUTE_UNUSED,
4458                            struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
4459                            bfd_boolean *again)
4460 {
4461   *again = FALSE;
4462   return TRUE;
4463 }
4464
4465 /*
4466 INTERNAL_FUNCTION
4467         bfd_generic_gc_sections
4468
4469 SYNOPSIS
4470         bfd_boolean bfd_generic_gc_sections
4471           (bfd *, struct bfd_link_info *);
4472
4473 DESCRIPTION
4474         Provides default handling for relaxing for back ends which
4475         don't do section gc -- i.e., does nothing.
4476 */
4477
4478 bfd_boolean
4479 bfd_generic_gc_sections (bfd *abfd ATTRIBUTE_UNUSED,
4480                          struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4481 {
4482   return TRUE;
4483 }
4484
4485 /*
4486 INTERNAL_FUNCTION
4487         bfd_generic_merge_sections
4488
4489 SYNOPSIS
4490         bfd_boolean bfd_generic_merge_sections
4491           (bfd *, struct bfd_link_info *);
4492
4493 DESCRIPTION
4494         Provides default handling for SEC_MERGE section merging for back ends
4495         which don't have SEC_MERGE support -- i.e., does nothing.
4496 */
4497
4498 bfd_boolean
4499 bfd_generic_merge_sections (bfd *abfd ATTRIBUTE_UNUSED,
4500                             struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4501 {
4502   return TRUE;
4503 }
4504
4505 /*
4506 INTERNAL_FUNCTION
4507         bfd_generic_get_relocated_section_contents
4508
4509 SYNOPSIS
4510         bfd_byte *bfd_generic_get_relocated_section_contents
4511           (bfd *abfd,
4512            struct bfd_link_info *link_info,
4513            struct bfd_link_order *link_order,
4514            bfd_byte *data,
4515            bfd_boolean relocatable,
4516            asymbol **symbols);
4517
4518 DESCRIPTION
4519         Provides default handling of relocation effort for back ends
4520         which can't be bothered to do it efficiently.
4521
4522 */
4523
4524 bfd_byte *
4525 bfd_generic_get_relocated_section_contents (bfd *abfd,
4526                                             struct bfd_link_info *link_info,
4527                                             struct bfd_link_order *link_order,
4528                                             bfd_byte *data,
4529                                             bfd_boolean relocatable,
4530                                             asymbol **symbols)
4531 {
4532   /* Get enough memory to hold the stuff.  */
4533   bfd *input_bfd = link_order->u.indirect.section->owner;
4534   asection *input_section = link_order->u.indirect.section;
4535
4536   long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
4537   arelent **reloc_vector = NULL;
4538   long reloc_count;
4539   bfd_size_type sz;
4540
4541   if (reloc_size < 0)
4542     goto error_return;
4543
4544   reloc_vector = bfd_malloc (reloc_size);
4545   if (reloc_vector == NULL && reloc_size != 0)
4546     goto error_return;
4547
4548   /* Read in the section.  */
4549   sz = input_section->rawsize ? input_section->rawsize : input_section->size;
4550   if (!bfd_get_section_contents (input_bfd, input_section, data, 0, sz))
4551     goto error_return;
4552
4553   reloc_count = bfd_canonicalize_reloc (input_bfd,
4554                                         input_section,
4555                                         reloc_vector,
4556                                         symbols);
4557   if (reloc_count < 0)
4558     goto error_return;
4559
4560   if (reloc_count > 0)
4561     {
4562       arelent **parent;
4563       for (parent = reloc_vector; *parent != NULL; parent++)
4564         {
4565           char *error_message = NULL;
4566           bfd_reloc_status_type r =
4567             bfd_perform_relocation (input_bfd,
4568                                     *parent,
4569                                     data,
4570                                     input_section,
4571                                     relocatable ? abfd : NULL,
4572                                     &error_message);
4573
4574           if (relocatable)
4575             {
4576               asection *os = input_section->output_section;
4577
4578               /* A partial link, so keep the relocs.  */
4579               os->orelocation[os->reloc_count] = *parent;
4580               os->reloc_count++;
4581             }
4582
4583           if (r != bfd_reloc_ok)
4584             {
4585               switch (r)
4586                 {
4587                 case bfd_reloc_undefined:
4588                   if (!((*link_info->callbacks->undefined_symbol)
4589                         (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4590                          input_bfd, input_section, (*parent)->address,
4591                          TRUE)))
4592                     goto error_return;
4593                   break;
4594                 case bfd_reloc_dangerous:
4595                   BFD_ASSERT (error_message != NULL);
4596                   if (!((*link_info->callbacks->reloc_dangerous)
4597                         (link_info, error_message, input_bfd, input_section,
4598                          (*parent)->address)))
4599                     goto error_return;
4600                   break;
4601                 case bfd_reloc_overflow:
4602                   if (!((*link_info->callbacks->reloc_overflow)
4603                         (link_info, NULL,
4604                          bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4605                          (*parent)->howto->name, (*parent)->addend,
4606                          input_bfd, input_section, (*parent)->address)))
4607                     goto error_return;
4608                   break;
4609                 case bfd_reloc_outofrange:
4610                 default:
4611                   abort ();
4612                   break;
4613                 }
4614
4615             }
4616         }
4617     }
4618   if (reloc_vector != NULL)
4619     free (reloc_vector);
4620   return data;
4621
4622 error_return:
4623   if (reloc_vector != NULL)
4624     free (reloc_vector);
4625   return NULL;
4626 }