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
   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 symbol_cache_entry **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
 126         the pointer into the table returned by the back end's
 127         <<get_symtab>> action. @xref{Symbols}. The symbol is referenced
 128         through a pointer to a pointer so that tools like the linker
 129         can fix up all the symbols of the same name by modifying only
 130         one pointer. The relocation routine looks in the symbol and
 131         uses the base of the section the symbol is attached to and the
 132         value of the symbol as the initial relocation offset. If the
 133         symbol pointer is zero, then the section provided is looked up.
 134
 135         o <<address>>
 136
 137         The <<address>> field gives the offset in bytes from the base of
 138         the section data which owns the relocation record to the first
 139         byte of relocatable information. The actual data relocated
 140         will be relative to this point; for example, a relocation
 141         type which modifies the bottom two bytes of a four byte word
 142         would not touch the first byte pointed to in a big endian
 143         world.
 144
 145         o <<addend>>
 146
 147         The <<addend>> is a value provided by the back end to be added (!)
 148         to the relocation offset. Its interpretation is dependent upon
 149         the howto. For example, on the 68k the code:
 150
 151 |        char foo[];
 152 |        main()
 153 |                {
 154 |                return foo[0x12345678];
 155 |                }
 156
 157         Could be compiled into:
 158
 159 |        linkw fp,#-4
 160 |        moveb @@#12345678,d0
 161 |        extbl d0
 162 |        unlk fp
 163 |        rts
 164
 165         This could create a reloc pointing to <<foo>>, but leave the
 166         offset in the data, something like:
 167
 168 |RELOCATION RECORDS FOR [.text]:
 169 |offset   type      value
 170 |00000006 32        _foo
 171 |
 172 |00000000 4e56 fffc          ; linkw fp,#-4
 173 |00000004 1039 1234 5678     ; moveb @@#12345678,d0
 174 |0000000a 49c0               ; extbl d0
 175 |0000000c 4e5e               ; unlk fp
 176 |0000000e 4e75               ; rts
 177
 178         Using coff and an 88k, some instructions don't have enough
 179         space in them to represent the full address range, and
 180         pointers have to be loaded in two parts. So you'd get something like:
 181
 182 |        or.u     r13,r0,hi16(_foo+0x12345678)
 183 |        ld.b     r2,r13,lo16(_foo+0x12345678)
 184 |        jmp      r1
 185
 186         This should create two relocs, both pointing to <<_foo>>, and with
 187         0x12340000 in their addend field. The data would consist of:
 188
 189 |RELOCATION RECORDS FOR [.text]:
 190 |offset   type      value
 191 |00000002 HVRT16    _foo+0x12340000
 192 |00000006 LVRT16    _foo+0x12340000
 193 |
 194 |00000000 5da05678           ; or.u r13,r0,0x5678
 195 |00000004 1c4d5678           ; ld.b r2,r13,0x5678
 196 |00000008 f400c001           ; jmp r1
 197
 198         The relocation routine digs out the value from the data, adds
 199         it to the addend to get the original offset, and then adds the
 200         value of <<_foo>>. Note that all 32 bits have to be kept around
 201         somewhere, to cope with carry from bit 15 to bit 16.
 202
 203         One further example is the sparc and the a.out format. The
 204         sparc has a similar problem to the 88k, in that some
 205         instructions don't have room for an entire offset, but on the
 206         sparc the parts are created in odd sized lumps. The designers of
 207         the a.out format chose to not use the data within the section
 208         for storing part of the offset; all the offset is kept within
 209         the reloc. Anything in the data should be ignored.
 210
 211 |        save %sp,-112,%sp
 212 |        sethi %hi(_foo+0x12345678),%g2
 213 |        ldsb [%g2+%lo(_foo+0x12345678)],%i0
 214 |        ret
 215 |        restore
 216
 217         Both relocs contain a pointer to <<foo>>, and the offsets
 218         contain junk.
 219
 220 |RELOCATION RECORDS FOR [.text]:
 221 |offset   type      value
 222 |00000004 HI22      _foo+0x12345678
 223 |00000008 LO10      _foo+0x12345678
 224 |
 225 |00000000 9de3bf90     ; save %sp,-112,%sp
 226 |00000004 05000000     ; sethi %hi(_foo+0),%g2
 227 |00000008 f048a000     ; ldsb [%g2+%lo(_foo+0)],%i0
 228 |0000000c 81c7e008     ; ret
 229 |00000010 81e80000     ; restore
 230
 231         o <<howto>>
 232
 233         The <<howto>> field can be imagined as a
 234         relocation instruction. It is a pointer to a structure which
 235         contains information on what to do with all of the other
 236         information in the reloc record and data section. A back end
 237         would normally have a relocation instruction set and turn
 238         relocations into pointers to the correct structure on input -
 239         but it would be possible to create each howto field on demand.
 240
 241 */
 242
 243 /*
 244 SUBSUBSECTION
 245         <<enum complain_overflow>>
 246
 247         Indicates what sort of overflow checking should be done when
 248         performing a relocation.
 249
 250 CODE_FRAGMENT
 251 .
 252 .enum complain_overflow
 253 .{
 254 .  {* Do not complain on overflow.  *}
 255 .  complain_overflow_dont,
 256 .
 257 .  {* Complain if the bitfield overflows, whether it is considered
 258 .     as signed or unsigned.  *}
 259 .  complain_overflow_bitfield,
 260 .
 261 .  {* Complain if the value overflows when considered as signed
 262 .     number.  *}
 263 .  complain_overflow_signed,
 264 .
 265 .  {* Complain if the value overflows when considered as an
 266 .     unsigned number.  *}
 267 .  complain_overflow_unsigned
 268 .};
 269
 270 */
 271
 272 /*
 273 SUBSUBSECTION
 274         <<reloc_howto_type>>
 275
 276         The <<reloc_howto_type>> is a structure which contains all the
 277         information that libbfd needs to know to tie up a back end's data.
 278
 279 CODE_FRAGMENT
 280 .struct symbol_cache_entry;             {* Forward declaration.  *}
 281 .
 282 .struct reloc_howto_struct
 283 .{
 284 .  {*  The type field has mainly a documentary use - the back end can
 285 .      do what it wants with it, though normally the back end's
 286 .      external idea of what a reloc number is stored
 287 .      in this field.  For example, a PC relative word relocation
 288 .      in a coff environment has the type 023 - because that's
 289 .      what the outside world calls a R_PCRWORD reloc.  *}
 290 .  unsigned int type;
 291 .
 292 .  {*  The value the final relocation is shifted right by.  This drops
 293 .      unwanted data from the relocation.  *}
 294 .  unsigned int rightshift;
 295 .
 296 .  {*  The size of the item to be relocated.  This is *not* a
 297 .      power-of-two measure.  To get the number of bytes operated
 298 .      on by a type of relocation, use bfd_get_reloc_size.  *}
 299 .  int size;
 300 .
 301 .  {*  The number of bits in the item to be relocated.  This is used
 302 .      when doing overflow checking.  *}
 303 .  unsigned int bitsize;
 304 .
 305 .  {*  Notes that the relocation is relative to the location in the
 306 .      data section of the addend.  The relocation function will
 307 .      subtract from the relocation value the address of the location
 308 .      being relocated.  *}
 309 .  bfd_boolean pc_relative;
 310 .
 311 .  {*  The bit position of the reloc value in the destination.
 312 .      The relocated value is left shifted by this amount.  *}
 313 .  unsigned int bitpos;
 314 .
 315 .  {* What type of overflow error should be checked for when
 316 .     relocating.  *}
 317 .  enum complain_overflow complain_on_overflow;
 318 .
 319 .  {* If this field is non null, then the supplied function is
 320 .     called rather than the normal function.  This allows really
 321 .     strange relocation methods to be accomodated (e.g., i960 callj
 322 .     instructions).  *}
 323 .  bfd_reloc_status_type (*special_function)
 324 .    PARAMS ((bfd *, arelent *, struct symbol_cache_entry *, PTR, asection *,
 325 .             bfd *, char **));
 326 .
 327 .  {* The textual name of the relocation type.  *}
 328 .  char *name;
 329 .
 330 .  {* Some formats record a relocation addend in the section contents
 331 .     rather than with the relocation.  For ELF formats this is the
 332 .     distinction between USE_REL and USE_RELA (though the code checks
 333 .     for USE_REL == 1/0).  The value of this field is TRUE if the
 334 .     addend is recorded with the section contents; when performing a
 335 .     partial link (ld -r) the section contents (the data) will be
 336 .     modified.  The value of this field is FALSE if addends are
 337 .     recorded with the relocation (in arelent.addend); when performing
 338 .     a partial link the relocation will be modified.
 339 .     All relocations for all ELF USE_RELA targets should set this field
 340 .     to FALSE (values of TRUE should be looked on with suspicion).
 341 .     However, the converse is not true: not all relocations of all ELF
 342 .     USE_REL targets set this field to TRUE.  Why this is so is peculiar
 343 .     to each particular target.  For relocs that aren't used in partial
 344 .     links (e.g. GOT stuff) it doesn't matter what this is set to.  *}
 345 .  bfd_boolean partial_inplace;
 346 .
 347 .  {* src_mask selects the part of the instruction (or data) to be used
 348 .     in the relocation sum.  If the target relocations don't have an
 349 .     addend in the reloc, eg. ELF USE_REL, src_mask will normally equal
 350 .     dst_mask to extract the addend from the section contents.  If
 351 .     relocations do have an addend in the reloc, eg. ELF USE_RELA, this
 352 .     field should be zero.  Non-zero values for ELF USE_RELA targets are
 353 .     bogus as in those cases the value in the dst_mask part of the
 354 .     section contents should be treated as garbage.  *}
 355 .  bfd_vma src_mask;
 356 .
 357 .  {* dst_mask selects which parts of the instruction (or data) are
 358 .     replaced with a relocated value.  *}
 359 .  bfd_vma dst_mask;
 360 .
 361 .  {* When some formats create PC relative instructions, they leave
 362 .     the value of the pc of the place being relocated in the offset
 363 .     slot of the instruction, so that a PC relative relocation can
 364 .     be made just by adding in an ordinary offset (e.g., sun3 a.out).
 365 .     Some formats leave the displacement part of an instruction
 366 .     empty (e.g., m88k bcs); this flag signals the fact.  *}
 367 .  bfd_boolean pcrel_offset;
 368 .};
 369 .
 370 */
 371
 372 /*
 373 FUNCTION
 374         The HOWTO Macro
 375
 376 DESCRIPTION
 377         The HOWTO define is horrible and will go away.
 378
 379 .#define HOWTO(C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC) \
 380 .  { (unsigned) C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC }
 381
 382 DESCRIPTION
 383         And will be replaced with the totally magic way. But for the
 384         moment, we are compatible, so do it this way.
 385
 386 .#define NEWHOWTO(FUNCTION, NAME, SIZE, REL, IN) \
 387 .  HOWTO (0, 0, SIZE, 0, REL, 0, complain_overflow_dont, FUNCTION, \
 388 .         NAME, FALSE, 0, 0, IN)
 389 .
 390
 391 DESCRIPTION
 392         This is used to fill in an empty howto entry in an array.
 393
 394 .#define EMPTY_HOWTO(C) \
 395 .  HOWTO ((C), 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL, \
 396 .         NULL, FALSE, 0, 0, FALSE)
 397 .
 398
 399 DESCRIPTION
 400         Helper routine to turn a symbol into a relocation value.
 401
 402 .#define HOWTO_PREPARE(relocation, symbol)               \
 403 .  {                                                     \
 404 .    if (symbol != (asymbol *) NULL)                     \
 405 .      {                                                 \
 406 .        if (bfd_is_com_section (symbol->section))       \
 407 .          {                                             \
 408 .            relocation = 0;                             \
 409 .          }                                             \
 410 .        else                                            \
 411 .          {                                             \
 412 .            relocation = symbol->value;                 \
 413 .          }                                             \
 414 .      }                                                 \
 415 .  }
 416 .
 417 */
 418
 419 /*
 420 FUNCTION
 421         bfd_get_reloc_size
 422
 423 SYNOPSIS
 424         unsigned int bfd_get_reloc_size (reloc_howto_type *);
 425
 426 DESCRIPTION
 427         For a reloc_howto_type that operates on a fixed number of bytes,
 428         this returns the number of bytes operated on.
 429  */
 430
 431 unsigned int
 432 bfd_get_reloc_size (howto)
 433      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
 474                 bfd_check_overflow
 475                         (enum complain_overflow how,
 476                          unsigned int bitsize,
 477                          unsigned int rightshift,
 478                          unsigned int addrsize,
 479                          bfd_vma relocation);
 480
 481 DESCRIPTION
 482         Perform overflow checking on @var{relocation} which has
 483         @var{bitsize} significant bits and will be shifted right by
 484         @var{rightshift} bits, on a machine with addresses containing
 485         @var{addrsize} significant bits.  The result is either of
 486         @code{bfd_reloc_ok} or @code{bfd_reloc_overflow}.
 487
 488 */
 489
 490 bfd_reloc_status_type
 491 bfd_check_overflow (how, bitsize, rightshift, addrsize, relocation)
 492      enum complain_overflow how;
 493      unsigned int bitsize;
 494      unsigned int rightshift;
 495      unsigned int addrsize;
 496      bfd_vma relocation;
 497 {
 498   bfd_vma fieldmask, addrmask, signmask, ss, a;
 499   bfd_reloc_status_type flag = bfd_reloc_ok;
 500
 501   a = relocation;
 502
 503   /* Note: BITSIZE should always be <= ADDRSIZE, but in case it's not,
 504      we'll be permissive: extra bits in the field mask will
 505      automatically extend the address mask for purposes of the
 506      overflow check.  */
 507   fieldmask = N_ONES (bitsize);
 508   addrmask = N_ONES (addrsize) | fieldmask;
 509
 510   switch (how)
 511     {
 512     case complain_overflow_dont:
 513       break;
 514
 515     case complain_overflow_signed:
 516       /* If any sign bits are set, all sign bits must be set.  That
 517          is, A must be a valid negative address after shifting.  */
 518       a = (a & addrmask) >> rightshift;
 519       signmask = ~ (fieldmask >> 1);
 520       ss = a & signmask;
 521       if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
 522         flag = bfd_reloc_overflow;
 523       break;
 524
 525     case complain_overflow_unsigned:
 526       /* We have an overflow if the address does not fit in the field.  */
 527       a = (a & addrmask) >> rightshift;
 528       if ((a & ~ fieldmask) != 0)
 529         flag = bfd_reloc_overflow;
 530       break;
 531
 532     case complain_overflow_bitfield:
 533       /* Bitfields are sometimes signed, sometimes unsigned.  We
 534          explicitly allow an address wrap too, which means a bitfield
 535          of n bits is allowed to store -2**n to 2**n-1.  Thus overflow
 536          if the value has some, but not all, bits set outside the
 537          field.  */
 538       a >>= rightshift;
 539       ss = a & ~ fieldmask;
 540       if (ss != 0 && ss != (((bfd_vma) -1 >> rightshift) & ~ fieldmask))
 541         flag = bfd_reloc_overflow;
 542       break;
 543
 544     default:
 545       abort ();
 546     }
 547
 548   return flag;
 549 }
 550
 551 /*
 552 FUNCTION
 553         bfd_perform_relocation
 554
 555 SYNOPSIS
 556         bfd_reloc_status_type
 557                 bfd_perform_relocation
 558                         (bfd *abfd,
 559                          arelent *reloc_entry,
 560                          PTR data,
 561                          asection *input_section,
 562                          bfd *output_bfd,
 563                          char **error_message);
 564
 565 DESCRIPTION
 566         If @var{output_bfd} is supplied to this function, the
 567         generated image will be relocatable; the relocations are
 568         copied to the output file after they have been changed to
 569         reflect the new state of the world. There are two ways of
 570         reflecting the results of partial linkage in an output file:
 571         by modifying the output data in place, and by modifying the
 572         relocation record.  Some native formats (e.g., basic a.out and
 573         basic coff) have no way of specifying an addend in the
 574         relocation type, so the addend has to go in the output data.
 575         This is no big deal since in these formats the output data
 576         slot will always be big enough for the addend. Complex reloc
 577         types with addends were invented to solve just this problem.
 578         The @var{error_message} argument is set to an error message if
 579         this return @code{bfd_reloc_dangerous}.
 580
 581 */
 582
 583 bfd_reloc_status_type
 584 bfd_perform_relocation (abfd, reloc_entry, data, input_section, output_bfd,
 585                         error_message)
 586      bfd *abfd;
 587      arelent *reloc_entry;
 588      PTR data;
 589      asection *input_section;
 590      bfd *output_bfd;
 591      char **error_message;
 592 {
 593   bfd_vma relocation;
 594   bfd_reloc_status_type flag = bfd_reloc_ok;
 595   bfd_size_type octets = reloc_entry->address * bfd_octets_per_byte (abfd);
 596   bfd_vma output_base = 0;
 597   reloc_howto_type *howto = reloc_entry->howto;
 598   asection *reloc_target_output_section;
 599   asymbol *symbol;
 600
 601   symbol = *(reloc_entry->sym_ptr_ptr);
 602   if (bfd_is_abs_section (symbol->section)
 603       && output_bfd != (bfd *) NULL)
 604     {
 605       reloc_entry->address += input_section->output_offset;
 606       return bfd_reloc_ok;
 607     }
 608
 609   /* If we are not producing relocateable output, return an error if
 610      the symbol is not defined.  An undefined weak symbol is
 611      considered to have a value of zero (SVR4 ABI, p. 4-27).  */
 612   if (bfd_is_und_section (symbol->section)
 613       && (symbol->flags & BSF_WEAK) == 0
 614       && output_bfd == (bfd *) NULL)
 615     flag = bfd_reloc_undefined;
 616
 617   /* If there is a function supplied to handle this relocation type,
 618      call it.  It'll return `bfd_reloc_continue' if further processing
 619      can be done.  */
 620   if (howto->special_function)
 621     {
 622       bfd_reloc_status_type cont;
 623       cont = howto->special_function (abfd, reloc_entry, symbol, data,
 624                                       input_section, output_bfd,
 625                                       error_message);
 626       if (cont != bfd_reloc_continue)
 627         return cont;
 628     }
 629
 630   /* Is the address of the relocation really within the section?  */
 631   if (reloc_entry->address > (input_section->_cooked_size
 632                               / bfd_octets_per_byte (abfd)))
 633     return bfd_reloc_outofrange;
 634
 635   /* Work out which section the relocation is targetted at and the
 636      initial relocation command value.  */
 637
 638   /* Get symbol value.  (Common symbols are special.)  */
 639   if (bfd_is_com_section (symbol->section))
 640     relocation = 0;
 641   else
 642     relocation = symbol->value;
 643
 644   reloc_target_output_section = symbol->section->output_section;
 645
 646   /* Convert input-section-relative symbol value to absolute.  */
 647   if ((output_bfd && ! howto->partial_inplace)
 648       || reloc_target_output_section == NULL)
 649     output_base = 0;
 650   else
 651     output_base = reloc_target_output_section->vma;
 652
 653   relocation += output_base + symbol->section->output_offset;
 654
 655   /* Add in supplied addend.  */
 656   relocation += reloc_entry->addend;
 657
 658   /* Here the variable relocation holds the final address of the
 659      symbol we are relocating against, plus any addend.  */
 660
 661   if (howto->pc_relative)
 662     {
 663       /* This is a PC relative relocation.  We want to set RELOCATION
 664          to the distance between the address of the symbol and the
 665          location.  RELOCATION is already the address of the symbol.
 666
 667          We start by subtracting the address of the section containing
 668          the location.
 669
 670          If pcrel_offset is set, we must further subtract the position
 671          of the location within the section.  Some targets arrange for
 672          the addend to be the negative of the position of the location
 673          within the section; for example, i386-aout does this.  For
 674          i386-aout, pcrel_offset is FALSE.  Some other targets do not
 675          include the position of the location; for example, m88kbcs,
 676          or ELF.  For those targets, pcrel_offset is TRUE.
 677
 678          If we are producing relocateable output, then we must ensure
 679          that this reloc will be correctly computed when the final
 680          relocation is done.  If pcrel_offset is FALSE we want to wind
 681          up with the negative of the location within the section,
 682          which means we must adjust the existing addend by the change
 683          in the location within the section.  If pcrel_offset is TRUE
 684          we do not want to adjust the existing addend at all.
 685
 686          FIXME: This seems logical to me, but for the case of
 687          producing relocateable output it is not what the code
 688          actually does.  I don't want to change it, because it seems
 689          far too likely that something will break.  */
 690
 691       relocation -=
 692         input_section->output_section->vma + input_section->output_offset;
 693
 694       if (howto->pcrel_offset)
 695         relocation -= reloc_entry->address;
 696     }
 697
 698   if (output_bfd != (bfd *) NULL)
 699     {
 700       if (! howto->partial_inplace)
 701         {
 702           /* This is a partial relocation, and we want to apply the relocation
 703              to the reloc entry rather than the raw data. Modify the reloc
 704              inplace to reflect what we now know.  */
 705           reloc_entry->addend = relocation;
 706           reloc_entry->address += input_section->output_offset;
 707           return flag;
 708         }
 709       else
 710         {
 711           /* This is a partial relocation, but inplace, so modify the
 712              reloc record a bit.
 713
 714              If we've relocated with a symbol with a section, change
 715              into a ref to the section belonging to the symbol.  */
 716
 717           reloc_entry->address += input_section->output_offset;
 718
 719           /* WTF?? */
 720           if (abfd->xvec->flavour == bfd_target_coff_flavour
 721               && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
 722               && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
 723             {
 724 #if 1
 725               /* For m68k-coff, the addend was being subtracted twice during
 726                  relocation with -r.  Removing the line below this comment
 727                  fixes that problem; see PR 2953.
 728
 729 However, Ian wrote the following, regarding removing the line below,
 730 which explains why it is still enabled:  --djm
 731
 732 If you put a patch like that into BFD you need to check all the COFF
 733 linkers.  I am fairly certain that patch will break coff-i386 (e.g.,
 734 SCO); see coff_i386_reloc in coff-i386.c where I worked around the
 735 problem in a different way.  There may very well be a reason that the
 736 code works as it does.
 737
 738 Hmmm.  The first obvious point is that bfd_perform_relocation should
 739 not have any tests that depend upon the flavour.  It's seem like
 740 entirely the wrong place for such a thing.  The second obvious point
 741 is that the current code ignores the reloc addend when producing
 742 relocateable output for COFF.  That's peculiar.  In fact, I really
 743 have no idea what the point of the line you want to remove is.
 744
 745 A typical COFF reloc subtracts the old value of the symbol and adds in
 746 the new value to the location in the object file (if it's a pc
 747 relative reloc it adds the difference between the symbol value and the
 748 location).  When relocating we need to preserve that property.
 749
 750 BFD handles this by setting the addend to the negative of the old
 751 value of the symbol.  Unfortunately it handles common symbols in a
 752 non-standard way (it doesn't subtract the old value) but that's a
 753 different story (we can't change it without losing backward
 754 compatibility with old object files) (coff-i386 does subtract the old
 755 value, to be compatible with existing coff-i386 targets, like SCO).
 756
 757 So everything works fine when not producing relocateable output.  When
 758 we are producing relocateable output, logically we should do exactly
 759 what we do when not producing relocateable output.  Therefore, your
 760 patch is correct.  In fact, it should probably always just set
 761 reloc_entry->addend to 0 for all cases, since it is, in fact, going to
 762 add the value into the object file.  This won't hurt the COFF code,
 763 which doesn't use the addend; I'm not sure what it will do to other
 764 formats (the thing to check for would be whether any formats both use
 765 the addend and set partial_inplace).
 766
 767 When I wanted to make coff-i386 produce relocateable output, I ran
 768 into the problem that you are running into: I wanted to remove that
 769 line.  Rather than risk it, I made the coff-i386 relocs use a special
 770 function; it's coff_i386_reloc in coff-i386.c.  The function
 771 specifically adds the addend field into the object file, knowing that
 772 bfd_perform_relocation is not going to.  If you remove that line, then
 773 coff-i386.c will wind up adding the addend field in twice.  It's
 774 trivial to fix; it just needs to be done.
 775
 776 The problem with removing the line is just that it may break some
 777 working code.  With BFD it's hard to be sure of anything.  The right
 778 way to deal with this is simply to build and test at least all the
 779 supported COFF targets.  It should be straightforward if time and disk
 780 space consuming.  For each target:
 781     1) build the linker
 782     2) generate some executable, and link it using -r (I would
 783        probably use paranoia.o and link against newlib/libc.a, which
 784        for all the supported targets would be available in
 785        /usr/cygnus/progressive/H-host/target/lib/libc.a).
 786     3) make the change to reloc.c
 787     4) rebuild the linker
 788     5) repeat step 2
 789     6) if the resulting object files are the same, you have at least
 790        made it no worse
 791     7) if they are different you have to figure out which version is
 792        right
 793 */
 794               relocation -= reloc_entry->addend;
 795 #endif
 796               reloc_entry->addend = 0;
 797             }
 798           else
 799             {
 800               reloc_entry->addend = relocation;
 801             }
 802         }
 803     }
 804   else
 805     {
 806       reloc_entry->addend = 0;
 807     }
 808
 809   /* FIXME: This overflow checking is incomplete, because the value
 810      might have overflowed before we get here.  For a correct check we
 811      need to compute the value in a size larger than bitsize, but we
 812      can't reasonably do that for a reloc the same size as a host
 813      machine word.
 814      FIXME: We should also do overflow checking on the result after
 815      adding in the value contained in the object file.  */
 816   if (howto->complain_on_overflow != complain_overflow_dont
 817       && flag == bfd_reloc_ok)
 818     flag = bfd_check_overflow (howto->complain_on_overflow,
 819                                howto->bitsize,
 820                                howto->rightshift,
 821                                bfd_arch_bits_per_address (abfd),
 822                                relocation);
 823
 824   /* Either we are relocating all the way, or we don't want to apply
 825      the relocation to the reloc entry (probably because there isn't
 826      any room in the output format to describe addends to relocs).  */
 827
 828   /* The cast to bfd_vma avoids a bug in the Alpha OSF/1 C compiler
 829      (OSF version 1.3, compiler version 3.11).  It miscompiles the
 830      following program:
 831
 832      struct str
 833      {
 834        unsigned int i0;
 835      } s = { 0 };
 836
 837      int
 838      main ()
 839      {
 840        unsigned long x;
 841
 842        x = 0x100000000;
 843        x <<= (unsigned long) s.i0;
 844        if (x == 0)
 845          printf ("failed\n");
 846        else
 847          printf ("succeeded (%lx)\n", x);
 848      }
 849      */
 850
 851   relocation >>= (bfd_vma) howto->rightshift;
 852
 853   /* Shift everything up to where it's going to be used.  */
 854   relocation <<= (bfd_vma) howto->bitpos;
 855
 856   /* Wait for the day when all have the mask in them.  */
 857
 858   /* What we do:
 859      i instruction to be left alone
 860      o offset within instruction
 861      r relocation offset to apply
 862      S src mask
 863      D dst mask
 864      N ~dst mask
 865      A part 1
 866      B part 2
 867      R result
 868
 869      Do this:
 870      ((  i i i i i o o o o o  from bfd_get<size>
 871      and           S S S S S) to get the size offset we want
 872      +   r r r r r r r r r r) to get the final value to place
 873      and           D D D D D  to chop to right size
 874      -----------------------
 875      =             A A A A A
 876      And this:
 877      (   i i i i i o o o o o  from bfd_get<size>
 878      and N N N N N          ) get instruction
 879      -----------------------
 880      =   B B B B B
 881
 882      And then:
 883      (   B B B B B
 884      or            A A A A A)
 885      -----------------------
 886      =   R R R R R R R R R R  put into bfd_put<size>
 887      */
 888
 889 #define DOIT(x) \
 890   x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) +  relocation) & howto->dst_mask))
 891
 892   switch (howto->size)
 893     {
 894     case 0:
 895       {
 896         char x = bfd_get_8 (abfd, (char *) data + octets);
 897         DOIT (x);
 898         bfd_put_8 (abfd, x, (unsigned char *) data + octets);
 899       }
 900       break;
 901
 902     case 1:
 903       {
 904         short x = bfd_get_16 (abfd, (bfd_byte *) data + octets);
 905         DOIT (x);
 906         bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data + octets);
 907       }
 908       break;
 909     case 2:
 910       {
 911         long x = bfd_get_32 (abfd, (bfd_byte *) data + octets);
 912         DOIT (x);
 913         bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 914       }
 915       break;
 916     case -2:
 917       {
 918         long x = bfd_get_32 (abfd, (bfd_byte *) data + octets);
 919         relocation = -relocation;
 920         DOIT (x);
 921         bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 922       }
 923       break;
 924
 925     case -1:
 926       {
 927         long x = bfd_get_16 (abfd, (bfd_byte *) data + octets);
 928         relocation = -relocation;
 929         DOIT (x);
 930         bfd_put_16 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 931       }
 932       break;
 933
 934     case 3:
 935       /* Do nothing */
 936       break;
 937
 938     case 4:
 939 #ifdef BFD64
 940       {
 941         bfd_vma x = bfd_get_64 (abfd, (bfd_byte *) data + octets);
 942         DOIT (x);
 943         bfd_put_64 (abfd, x, (bfd_byte *) data + octets);
 944       }
 945 #else
 946       abort ();
 947 #endif
 948       break;
 949     default:
 950       return bfd_reloc_other;
 951     }
 952
 953   return flag;
 954 }
 955
 956 /*
 957 FUNCTION
 958         bfd_install_relocation
 959
 960 SYNOPSIS
 961         bfd_reloc_status_type
 962                 bfd_install_relocation
 963                         (bfd *abfd,
 964                          arelent *reloc_entry,
 965                          PTR data, bfd_vma data_start,
 966                          asection *input_section,
 967                          char **error_message);
 968
 969 DESCRIPTION
 970         This looks remarkably like <<bfd_perform_relocation>>, except it
 971         does not expect that the section contents have been filled in.
 972         I.e., it's suitable for use when creating, rather than applying
 973         a relocation.
 974
 975         For now, this function should be considered reserved for the
 976         assembler.
 977 */
 978
 979 bfd_reloc_status_type
 980 bfd_install_relocation (abfd, reloc_entry, data_start, data_start_offset,
 981                         input_section, error_message)
 982      bfd *abfd;
 983      arelent *reloc_entry;
 984      PTR data_start;
 985      bfd_vma data_start_offset;
 986      asection *input_section;
 987      char **error_message;
 988 {
 989   bfd_vma relocation;
 990   bfd_reloc_status_type flag = bfd_reloc_ok;
 991   bfd_size_type octets = reloc_entry->address * bfd_octets_per_byte (abfd);
 992   bfd_vma output_base = 0;
 993   reloc_howto_type *howto = reloc_entry->howto;
 994   asection *reloc_target_output_section;
 995   asymbol *symbol;
 996   bfd_byte *data;
 997
 998   symbol = *(reloc_entry->sym_ptr_ptr);
 999   if (bfd_is_abs_section (symbol->section))
1000     {
1001       reloc_entry->address += input_section->output_offset;
1002       return bfd_reloc_ok;
1003     }
1004
1005   /* If there is a function supplied to handle this relocation type,
1006      call it.  It'll return `bfd_reloc_continue' if further processing
1007      can be done.  */
1008   if (howto->special_function)
1009     {
1010       bfd_reloc_status_type cont;
1011
1012       /* XXX - The special_function calls haven't been fixed up to deal
1013          with creating new relocations and section contents.  */
1014       cont = howto->special_function (abfd, reloc_entry, symbol,
1015                                       /* XXX - Non-portable! */
1016                                       ((bfd_byte *) data_start
1017                                        - data_start_offset),
1018                                       input_section, abfd, error_message);
1019       if (cont != bfd_reloc_continue)
1020         return cont;
1021     }
1022
1023   /* Is the address of the relocation really within the section?  */
1024   if (reloc_entry->address > (input_section->_cooked_size
1025                               / bfd_octets_per_byte (abfd)))
1026     return bfd_reloc_outofrange;
1027
1028   /* Work out which section the relocation is targetted at and the
1029      initial relocation command value.  */
1030
1031   /* Get symbol value.  (Common symbols are special.)  */
1032   if (bfd_is_com_section (symbol->section))
1033     relocation = 0;
1034   else
1035     relocation = symbol->value;
1036
1037   reloc_target_output_section = symbol->section->output_section;
1038
1039   /* Convert input-section-relative symbol value to absolute.  */
1040   if (! howto->partial_inplace)
1041     output_base = 0;
1042   else
1043     output_base = reloc_target_output_section->vma;
1044
1045   relocation += output_base + symbol->section->output_offset;
1046
1047   /* Add in supplied addend.  */
1048   relocation += reloc_entry->addend;
1049
1050   /* Here the variable relocation holds the final address of the
1051      symbol we are relocating against, plus any addend.  */
1052
1053   if (howto->pc_relative)
1054     {
1055       /* This is a PC relative relocation.  We want to set RELOCATION
1056          to the distance between the address of the symbol and the
1057          location.  RELOCATION is already the address of the symbol.
1058
1059          We start by subtracting the address of the section containing
1060          the location.
1061
1062          If pcrel_offset is set, we must further subtract the position
1063          of the location within the section.  Some targets arrange for
1064          the addend to be the negative of the position of the location
1065          within the section; for example, i386-aout does this.  For
1066          i386-aout, pcrel_offset is FALSE.  Some other targets do not
1067          include the position of the location; for example, m88kbcs,
1068          or ELF.  For those targets, pcrel_offset is TRUE.
1069
1070          If we are producing relocateable output, then we must ensure
1071          that this reloc will be correctly computed when the final
1072          relocation is done.  If pcrel_offset is FALSE we want to wind
1073          up with the negative of the location within the section,
1074          which means we must adjust the existing addend by the change
1075          in the location within the section.  If pcrel_offset is TRUE
1076          we do not want to adjust the existing addend at all.
1077
1078          FIXME: This seems logical to me, but for the case of
1079          producing relocateable output it is not what the code
1080          actually does.  I don't want to change it, because it seems
1081          far too likely that something will break.  */
1082
1083       relocation -=
1084         input_section->output_section->vma + input_section->output_offset;
1085
1086       if (howto->pcrel_offset && howto->partial_inplace)
1087         relocation -= reloc_entry->address;
1088     }
1089
1090   if (! howto->partial_inplace)
1091     {
1092       /* This is a partial relocation, and we want to apply the relocation
1093          to the reloc entry rather than the raw data. Modify the reloc
1094          inplace to reflect what we now know.  */
1095       reloc_entry->addend = relocation;
1096       reloc_entry->address += input_section->output_offset;
1097       return flag;
1098     }
1099   else
1100     {
1101       /* This is a partial relocation, but inplace, so modify the
1102          reloc record a bit.
1103
1104          If we've relocated with a symbol with a section, change
1105          into a ref to the section belonging to the symbol.  */
1106       reloc_entry->address += input_section->output_offset;
1107
1108       /* WTF?? */
1109       if (abfd->xvec->flavour == bfd_target_coff_flavour
1110           && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
1111           && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
1112         {
1113 #if 1
1114 /* For m68k-coff, the addend was being subtracted twice during
1115    relocation with -r.  Removing the line below this comment
1116    fixes that problem; see PR 2953.
1117
1118 However, Ian wrote the following, regarding removing the line below,
1119 which explains why it is still enabled:  --djm
1120
1121 If you put a patch like that into BFD you need to check all the COFF
1122 linkers.  I am fairly certain that patch will break coff-i386 (e.g.,
1123 SCO); see coff_i386_reloc in coff-i386.c where I worked around the
1124 problem in a different way.  There may very well be a reason that the
1125 code works as it does.
1126
1127 Hmmm.  The first obvious point is that bfd_install_relocation should
1128 not have any tests that depend upon the flavour.  It's seem like
1129 entirely the wrong place for such a thing.  The second obvious point
1130 is that the current code ignores the reloc addend when producing
1131 relocateable output for COFF.  That's peculiar.  In fact, I really
1132 have no idea what the point of the line you want to remove is.
1133
1134 A typical COFF reloc subtracts the old value of the symbol and adds in
1135 the new value to the location in the object file (if it's a pc
1136 relative reloc it adds the difference between the symbol value and the
1137 location).  When relocating we need to preserve that property.
1138
1139 BFD handles this by setting the addend to the negative of the old
1140 value of the symbol.  Unfortunately it handles common symbols in a
1141 non-standard way (it doesn't subtract the old value) but that's a
1142 different story (we can't change it without losing backward
1143 compatibility with old object files) (coff-i386 does subtract the old
1144 value, to be compatible with existing coff-i386 targets, like SCO).
1145
1146 So everything works fine when not producing relocateable output.  When
1147 we are producing relocateable output, logically we should do exactly
1148 what we do when not producing relocateable output.  Therefore, your
1149 patch is correct.  In fact, it should probably always just set
1150 reloc_entry->addend to 0 for all cases, since it is, in fact, going to
1151 add the value into the object file.  This won't hurt the COFF code,
1152 which doesn't use the addend; I'm not sure what it will do to other
1153 formats (the thing to check for would be whether any formats both use
1154 the addend and set partial_inplace).
1155
1156 When I wanted to make coff-i386 produce relocateable output, I ran
1157 into the problem that you are running into: I wanted to remove that
1158 line.  Rather than risk it, I made the coff-i386 relocs use a special
1159 function; it's coff_i386_reloc in coff-i386.c.  The function
1160 specifically adds the addend field into the object file, knowing that
1161 bfd_install_relocation is not going to.  If you remove that line, then
1162 coff-i386.c will wind up adding the addend field in twice.  It's
1163 trivial to fix; it just needs to be done.
1164
1165 The problem with removing the line is just that it may break some
1166 working code.  With BFD it's hard to be sure of anything.  The right
1167 way to deal with this is simply to build and test at least all the
1168 supported COFF targets.  It should be straightforward if time and disk
1169 space consuming.  For each target:
1170     1) build the linker
1171     2) generate some executable, and link it using -r (I would
1172        probably use paranoia.o and link against newlib/libc.a, which
1173        for all the supported targets would be available in
1174        /usr/cygnus/progressive/H-host/target/lib/libc.a).
1175     3) make the change to reloc.c
1176     4) rebuild the linker
1177     5) repeat step 2
1178     6) if the resulting object files are the same, you have at least
1179        made it no worse
1180     7) if they are different you have to figure out which version is
1181        right.  */
1182           relocation -= reloc_entry->addend;
1183 #endif
1184           reloc_entry->addend = 0;
1185         }
1186       else
1187         {
1188           reloc_entry->addend = relocation;
1189         }
1190     }
1191
1192   /* FIXME: This overflow checking is incomplete, because the value
1193      might have overflowed before we get here.  For a correct check we
1194      need to compute the value in a size larger than bitsize, but we
1195      can't reasonably do that for a reloc the same size as a host
1196      machine word.
1197      FIXME: We should also do overflow checking on the result after
1198      adding in the value contained in the object file.  */
1199   if (howto->complain_on_overflow != complain_overflow_dont)
1200     flag = bfd_check_overflow (howto->complain_on_overflow,
1201                                howto->bitsize,
1202                                howto->rightshift,
1203                                bfd_arch_bits_per_address (abfd),
1204                                relocation);
1205
1206   /* Either we are relocating all the way, or we don't want to apply
1207      the relocation to the reloc entry (probably because there isn't
1208      any room in the output format to describe addends to relocs).  */
1209
1210   /* The cast to bfd_vma avoids a bug in the Alpha OSF/1 C compiler
1211      (OSF version 1.3, compiler version 3.11).  It miscompiles the
1212      following program:
1213
1214      struct str
1215      {
1216        unsigned int i0;
1217      } s = { 0 };
1218
1219      int
1220      main ()
1221      {
1222        unsigned long x;
1223
1224        x = 0x100000000;
1225        x <<= (unsigned long) s.i0;
1226        if (x == 0)
1227          printf ("failed\n");
1228        else
1229          printf ("succeeded (%lx)\n", x);
1230      }
1231      */
1232
1233   relocation >>= (bfd_vma) howto->rightshift;
1234
1235   /* Shift everything up to where it's going to be used.  */
1236   relocation <<= (bfd_vma) howto->bitpos;
1237
1238   /* Wait for the day when all have the mask in them.  */
1239
1240   /* What we do:
1241      i instruction to be left alone
1242      o offset within instruction
1243      r relocation offset to apply
1244      S src mask
1245      D dst mask
1246      N ~dst mask
1247      A part 1
1248      B part 2
1249      R result
1250
1251      Do this:
1252      ((  i i i i i o o o o o  from bfd_get<size>
1253      and           S S S S S) to get the size offset we want
1254      +   r r r r r r r r r r) to get the final value to place
1255      and           D D D D D  to chop to right size
1256      -----------------------
1257      =             A A A A A
1258      And this:
1259      (   i i i i i o o o o o  from bfd_get<size>
1260      and N N N N N          ) get instruction
1261      -----------------------
1262      =   B B B B B
1263
1264      And then:
1265      (   B B B B B
1266      or            A A A A A)
1267      -----------------------
1268      =   R R R R R R R R R R  put into bfd_put<size>
1269      */
1270
1271 #define DOIT(x) \
1272   x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) +  relocation) & howto->dst_mask))
1273
1274   data = (bfd_byte *) data_start + (octets - data_start_offset);
1275
1276   switch (howto->size)
1277     {
1278     case 0:
1279       {
1280         char x = bfd_get_8 (abfd, (char *) data);
1281         DOIT (x);
1282         bfd_put_8 (abfd, x, (unsigned char *) data);
1283       }
1284       break;
1285
1286     case 1:
1287       {
1288         short x = bfd_get_16 (abfd, (bfd_byte *) data);
1289         DOIT (x);
1290         bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data);
1291       }
1292       break;
1293     case 2:
1294       {
1295         long x = bfd_get_32 (abfd, (bfd_byte *) data);
1296         DOIT (x);
1297         bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data);
1298       }
1299       break;
1300     case -2:
1301       {
1302         long x = bfd_get_32 (abfd, (bfd_byte *) data);
1303         relocation = -relocation;
1304         DOIT (x);
1305         bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data);
1306       }
1307       break;
1308
1309     case 3:
1310       /* Do nothing */
1311       break;
1312
1313     case 4:
1314       {
1315         bfd_vma x = bfd_get_64 (abfd, (bfd_byte *) data);
1316         DOIT (x);
1317         bfd_put_64 (abfd, x, (bfd_byte *) data);
1318       }
1319       break;
1320     default:
1321       return bfd_reloc_other;
1322     }
1323
1324   return flag;
1325 }
1326
1327 /* This relocation routine is used by some of the backend linkers.
1328    They do not construct asymbol or arelent structures, so there is no
1329    reason for them to use bfd_perform_relocation.  Also,
1330    bfd_perform_relocation is so hacked up it is easier to write a new
1331    function than to try to deal with it.
1332
1333    This routine does a final relocation.  Whether it is useful for a
1334    relocateable link depends upon how the object format defines
1335    relocations.
1336
1337    FIXME: This routine ignores any special_function in the HOWTO,
1338    since the existing special_function values have been written for
1339    bfd_perform_relocation.
1340
1341    HOWTO is the reloc howto information.
1342    INPUT_BFD is the BFD which the reloc applies to.
1343    INPUT_SECTION is the section which the reloc applies to.
1344    CONTENTS is the contents of the section.
1345    ADDRESS is the address of the reloc within INPUT_SECTION.
1346    VALUE is the value of the symbol the reloc refers to.
1347    ADDEND is the addend of the reloc.  */
1348
1349 bfd_reloc_status_type
1350 _bfd_final_link_relocate (howto, input_bfd, input_section, contents, address,
1351                           value, addend)
1352      reloc_howto_type *howto;
1353      bfd *input_bfd;
1354      asection *input_section;
1355      bfd_byte *contents;
1356      bfd_vma address;
1357      bfd_vma value;
1358      bfd_vma addend;
1359 {
1360   bfd_vma relocation;
1361
1362   /* Sanity check the address.  */
1363   if (address > input_section->_raw_size)
1364     return bfd_reloc_outofrange;
1365
1366   /* This function assumes that we are dealing with a basic relocation
1367      against a symbol.  We want to compute the value of the symbol to
1368      relocate to.  This is just VALUE, the value of the symbol, plus
1369      ADDEND, any addend associated with the reloc.  */
1370   relocation = value + addend;
1371
1372   /* If the relocation is PC relative, we want to set RELOCATION to
1373      the distance between the symbol (currently in RELOCATION) and the
1374      location we are relocating.  Some targets (e.g., i386-aout)
1375      arrange for the contents of the section to be the negative of the
1376      offset of the location within the section; for such targets
1377      pcrel_offset is FALSE.  Other targets (e.g., m88kbcs or ELF)
1378      simply leave the contents of the section as zero; for such
1379      targets pcrel_offset is TRUE.  If pcrel_offset is FALSE we do not
1380      need to subtract out the offset of the location within the
1381      section (which is just ADDRESS).  */
1382   if (howto->pc_relative)
1383     {
1384       relocation -= (input_section->output_section->vma
1385                      + input_section->output_offset);
1386       if (howto->pcrel_offset)
1387         relocation -= address;
1388     }
1389
1390   return _bfd_relocate_contents (howto, input_bfd, relocation,
1391                                  contents + address);
1392 }
1393
1394 /* Relocate a given location using a given value and howto.  */
1395
1396 bfd_reloc_status_type
1397 _bfd_relocate_contents (howto, input_bfd, relocation, location)
1398      reloc_howto_type *howto;
1399      bfd *input_bfd;
1400      bfd_vma relocation;
1401      bfd_byte *location;
1402 {
1403   int size;
1404   bfd_vma x = 0;
1405   bfd_reloc_status_type flag;
1406   unsigned int rightshift = howto->rightshift;
1407   unsigned int bitpos = howto->bitpos;
1408
1409   /* If the size is negative, negate RELOCATION.  This isn't very
1410      general.  */
1411   if (howto->size < 0)
1412     relocation = -relocation;
1413
1414   /* Get the value we are going to relocate.  */
1415   size = bfd_get_reloc_size (howto);
1416   switch (size)
1417     {
1418     default:
1419     case 0:
1420       abort ();
1421     case 1:
1422       x = bfd_get_8 (input_bfd, location);
1423       break;
1424     case 2:
1425       x = bfd_get_16 (input_bfd, location);
1426       break;
1427     case 4:
1428       x = bfd_get_32 (input_bfd, location);
1429       break;
1430     case 8:
1431 #ifdef BFD64
1432       x = bfd_get_64 (input_bfd, location);
1433 #else
1434       abort ();
1435 #endif
1436       break;
1437     }
1438
1439   /* Check for overflow.  FIXME: We may drop bits during the addition
1440      which we don't check for.  We must either check at every single
1441      operation, which would be tedious, or we must do the computations
1442      in a type larger than bfd_vma, which would be inefficient.  */
1443   flag = bfd_reloc_ok;
1444   if (howto->complain_on_overflow != complain_overflow_dont)
1445     {
1446       bfd_vma addrmask, fieldmask, signmask, ss;
1447       bfd_vma a, b, sum;
1448
1449       /* Get the values to be added together.  For signed and unsigned
1450          relocations, we assume that all values should be truncated to
1451          the size of an address.  For bitfields, all the bits matter.
1452          See also bfd_check_overflow.  */
1453       fieldmask = N_ONES (howto->bitsize);
1454       addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask;
1455       a = relocation;
1456       b = x & howto->src_mask;
1457
1458       switch (howto->complain_on_overflow)
1459         {
1460         case complain_overflow_signed:
1461           a = (a & addrmask) >> rightshift;
1462
1463           /* If any sign bits are set, all sign bits must be set.
1464              That is, A must be a valid negative address after
1465              shifting.  */
1466           signmask = ~ (fieldmask >> 1);
1467           ss = a & signmask;
1468           if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
1469             flag = bfd_reloc_overflow;
1470
1471           /* We only need this next bit of code if the sign bit of B
1472              is below the sign bit of A.  This would only happen if
1473              SRC_MASK had fewer bits than BITSIZE.  Note that if
1474              SRC_MASK has more bits than BITSIZE, we can get into
1475              trouble; we would need to verify that B is in range, as
1476              we do for A above.  */
1477           signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1478
1479           /* Set all the bits above the sign bit.  */
1480           b = (b ^ signmask) - signmask;
1481
1482           b = (b & addrmask) >> bitpos;
1483
1484           /* Now we can do the addition.  */
1485           sum = a + b;
1486
1487           /* See if the result has the correct sign.  Bits above the
1488              sign bit are junk now; ignore them.  If the sum is
1489              positive, make sure we did not have all negative inputs;
1490              if the sum is negative, make sure we did not have all
1491              positive inputs.  The test below looks only at the sign
1492              bits, and it really just
1493                  SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
1494              */
1495           signmask = (fieldmask >> 1) + 1;
1496           if (((~ (a ^ b)) & (a ^ sum)) & signmask)
1497             flag = bfd_reloc_overflow;
1498
1499           break;
1500
1501         case complain_overflow_unsigned:
1502           /* Checking for an unsigned overflow is relatively easy:
1503              trim the addresses and add, and trim the result as well.
1504              Overflow is normally indicated when the result does not
1505              fit in the field.  However, we also need to consider the
1506              case when, e.g., fieldmask is 0x7fffffff or smaller, an
1507              input is 0x80000000, and bfd_vma is only 32 bits; then we
1508              will get sum == 0, but there is an overflow, since the
1509              inputs did not fit in the field.  Instead of doing a
1510              separate test, we can check for this by or-ing in the
1511              operands when testing for the sum overflowing its final
1512              field.  */
1513           a = (a & addrmask) >> rightshift;
1514           b = (b & addrmask) >> bitpos;
1515           sum = (a + b) & addrmask;
1516           if ((a | b | sum) & ~ fieldmask)
1517             flag = bfd_reloc_overflow;
1518
1519           break;
1520
1521         case complain_overflow_bitfield:
1522           /* Much like the signed check, but for a field one bit
1523              wider, and no trimming inputs with addrmask.  We allow a
1524              bitfield to represent numbers in the range -2**n to
1525              2**n-1, where n is the number of bits in the field.
1526              Note that when bfd_vma is 32 bits, a 32-bit reloc can't
1527              overflow, which is exactly what we want.  */
1528           a >>= rightshift;
1529
1530           signmask = ~ fieldmask;
1531           ss = a & signmask;
1532           if (ss != 0 && ss != (((bfd_vma) -1 >> rightshift) & signmask))
1533             flag = bfd_reloc_overflow;
1534
1535           signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1536           b = (b ^ signmask) - signmask;
1537
1538           b >>= bitpos;
1539
1540           sum = a + b;
1541
1542           /* We mask with addrmask here to explicitly allow an address
1543              wrap-around.  The Linux kernel relies on it, and it is
1544              the only way to write assembler code which can run when
1545              loaded at a location 0x80000000 away from the location at
1546              which it is linked.  */
1547           signmask = fieldmask + 1;
1548           if (((~ (a ^ b)) & (a ^ sum)) & signmask & addrmask)
1549             flag = bfd_reloc_overflow;
1550
1551           break;
1552
1553         default:
1554           abort ();
1555         }
1556     }
1557
1558   /* Put RELOCATION in the right bits.  */
1559   relocation >>= (bfd_vma) rightshift;
1560   relocation <<= (bfd_vma) bitpos;
1561
1562   /* Add RELOCATION to the right bits of X.  */
1563   x = ((x & ~howto->dst_mask)
1564        | (((x & howto->src_mask) + relocation) & howto->dst_mask));
1565
1566   /* Put the relocated value back in the object file.  */
1567   switch (size)
1568     {
1569     default:
1570     case 0:
1571       abort ();
1572     case 1:
1573       bfd_put_8 (input_bfd, x, location);
1574       break;
1575     case 2:
1576       bfd_put_16 (input_bfd, x, location);
1577       break;
1578     case 4:
1579       bfd_put_32 (input_bfd, x, location);
1580       break;
1581     case 8:
1582 #ifdef BFD64
1583       bfd_put_64 (input_bfd, x, location);
1584 #else
1585       abort ();
1586 #endif
1587       break;
1588     }
1589
1590   return flag;
1591 }
1592
1593 /*
1594 DOCDD
1595 INODE
1596         howto manager,  , typedef arelent, Relocations
1597
1598 SECTION
1599         The howto manager
1600
1601         When an application wants to create a relocation, but doesn't
1602         know what the target machine might call it, it can find out by
1603         using this bit of code.
1604
1605 */
1606
1607 /*
1608 TYPEDEF
1609         bfd_reloc_code_type
1610
1611 DESCRIPTION
1612         The insides of a reloc code.  The idea is that, eventually, there
1613         will be one enumerator for every type of relocation we ever do.
1614         Pass one of these values to <<bfd_reloc_type_lookup>>, and it'll
1615         return a howto pointer.
1616
1617         This does mean that the application must determine the correct
1618         enumerator value; you can't get a howto pointer from a random set
1619         of attributes.
1620
1621 SENUM
1622    bfd_reloc_code_real
1623
1624 ENUM
1625   BFD_RELOC_64
1626 ENUMX
1627   BFD_RELOC_32
1628 ENUMX
1629   BFD_RELOC_26
1630 ENUMX
1631   BFD_RELOC_24
1632 ENUMX
1633   BFD_RELOC_16
1634 ENUMX
1635   BFD_RELOC_14
1636 ENUMX
1637   BFD_RELOC_8
1638 ENUMDOC
1639   Basic absolute relocations of N bits.
1640
1641 ENUM
1642   BFD_RELOC_64_PCREL
1643 ENUMX
1644   BFD_RELOC_32_PCREL
1645 ENUMX
1646   BFD_RELOC_24_PCREL
1647 ENUMX
1648   BFD_RELOC_16_PCREL
1649 ENUMX
1650   BFD_RELOC_12_PCREL
1651 ENUMX
1652   BFD_RELOC_8_PCREL
1653 ENUMDOC
1654   PC-relative relocations.  Sometimes these are relative to the address
1655 of the relocation itself; sometimes they are relative to the start of
1656 the section containing the relocation.  It depends on the specific target.
1657
1658 The 24-bit relocation is used in some Intel 960 configurations.
1659
1660 ENUM
1661   BFD_RELOC_32_GOT_PCREL
1662 ENUMX
1663   BFD_RELOC_16_GOT_PCREL
1664 ENUMX
1665   BFD_RELOC_8_GOT_PCREL
1666 ENUMX
1667   BFD_RELOC_32_GOTOFF
1668 ENUMX
1669   BFD_RELOC_16_GOTOFF
1670 ENUMX
1671   BFD_RELOC_LO16_GOTOFF
1672 ENUMX
1673   BFD_RELOC_HI16_GOTOFF
1674 ENUMX
1675   BFD_RELOC_HI16_S_GOTOFF
1676 ENUMX
1677   BFD_RELOC_8_GOTOFF
1678 ENUMX
1679   BFD_RELOC_64_PLT_PCREL
1680 ENUMX
1681   BFD_RELOC_32_PLT_PCREL
1682 ENUMX
1683   BFD_RELOC_24_PLT_PCREL
1684 ENUMX
1685   BFD_RELOC_16_PLT_PCREL
1686 ENUMX
1687   BFD_RELOC_8_PLT_PCREL
1688 ENUMX
1689   BFD_RELOC_64_PLTOFF
1690 ENUMX
1691   BFD_RELOC_32_PLTOFF
1692 ENUMX
1693   BFD_RELOC_16_PLTOFF
1694 ENUMX
1695   BFD_RELOC_LO16_PLTOFF
1696 ENUMX
1697   BFD_RELOC_HI16_PLTOFF
1698 ENUMX
1699   BFD_RELOC_HI16_S_PLTOFF
1700 ENUMX
1701   BFD_RELOC_8_PLTOFF
1702 ENUMDOC
1703   For ELF.
1704
1705 ENUM
1706   BFD_RELOC_68K_GLOB_DAT
1707 ENUMX
1708   BFD_RELOC_68K_JMP_SLOT
1709 ENUMX
1710   BFD_RELOC_68K_RELATIVE
1711 ENUMDOC
1712   Relocations used by 68K ELF.
1713
1714 ENUM
1715   BFD_RELOC_32_BASEREL
1716 ENUMX
1717   BFD_RELOC_16_BASEREL
1718 ENUMX
1719   BFD_RELOC_LO16_BASEREL
1720 ENUMX
1721   BFD_RELOC_HI16_BASEREL
1722 ENUMX
1723   BFD_RELOC_HI16_S_BASEREL
1724 ENUMX
1725   BFD_RELOC_8_BASEREL
1726 ENUMX
1727   BFD_RELOC_RVA
1728 ENUMDOC
1729   Linkage-table relative.
1730
1731 ENUM
1732   BFD_RELOC_8_FFnn
1733 ENUMDOC
1734   Absolute 8-bit relocation, but used to form an address like 0xFFnn.
1735
1736 ENUM
1737   BFD_RELOC_32_PCREL_S2
1738 ENUMX
1739   BFD_RELOC_16_PCREL_S2
1740 ENUMX
1741   BFD_RELOC_23_PCREL_S2
1742 ENUMDOC
1743   These PC-relative relocations are stored as word displacements --
1744 i.e., byte displacements shifted right two bits.  The 30-bit word
1745 displacement (<<32_PCREL_S2>> -- 32 bits, shifted 2) is used on the
1746 SPARC.  (SPARC tools generally refer to this as <<WDISP30>>.)  The
1747 signed 16-bit displacement is used on the MIPS, and the 23-bit
1748 displacement is used on the Alpha.
1749
1750 ENUM
1751   BFD_RELOC_HI22
1752 ENUMX
1753   BFD_RELOC_LO10
1754 ENUMDOC
1755   High 22 bits and low 10 bits of 32-bit value, placed into lower bits of
1756 the target word.  These are used on the SPARC.
1757
1758 ENUM
1759   BFD_RELOC_GPREL16
1760 ENUMX
1761   BFD_RELOC_GPREL32
1762 ENUMDOC
1763   For systems that allocate a Global Pointer register, these are
1764 displacements off that register.  These relocation types are
1765 handled specially, because the value the register will have is
1766 decided relatively late.
1767
1768 ENUM
1769   BFD_RELOC_I960_CALLJ
1770 ENUMDOC
1771   Reloc types used for i960/b.out.
1772
1773 ENUM
1774   BFD_RELOC_NONE
1775 ENUMX
1776   BFD_RELOC_SPARC_WDISP22
1777 ENUMX
1778   BFD_RELOC_SPARC22
1779 ENUMX
1780   BFD_RELOC_SPARC13
1781 ENUMX
1782   BFD_RELOC_SPARC_GOT10
1783 ENUMX
1784   BFD_RELOC_SPARC_GOT13
1785 ENUMX
1786   BFD_RELOC_SPARC_GOT22
1787 ENUMX
1788   BFD_RELOC_SPARC_PC10
1789 ENUMX
1790   BFD_RELOC_SPARC_PC22
1791 ENUMX
1792   BFD_RELOC_SPARC_WPLT30
1793 ENUMX
1794   BFD_RELOC_SPARC_COPY
1795 ENUMX
1796   BFD_RELOC_SPARC_GLOB_DAT
1797 ENUMX
1798   BFD_RELOC_SPARC_JMP_SLOT
1799 ENUMX
1800   BFD_RELOC_SPARC_RELATIVE
1801 ENUMX
1802   BFD_RELOC_SPARC_UA16
1803 ENUMX
1804   BFD_RELOC_SPARC_UA32
1805 ENUMX
1806   BFD_RELOC_SPARC_UA64
1807 ENUMDOC
1808   SPARC ELF relocations.  There is probably some overlap with other
1809   relocation types already defined.
1810
1811 ENUM
1812   BFD_RELOC_SPARC_BASE13
1813 ENUMX
1814   BFD_RELOC_SPARC_BASE22
1815 ENUMDOC
1816   I think these are specific to SPARC a.out (e.g., Sun 4).
1817
1818 ENUMEQ
1819   BFD_RELOC_SPARC_64
1820   BFD_RELOC_64
1821 ENUMX
1822   BFD_RELOC_SPARC_10
1823 ENUMX
1824   BFD_RELOC_SPARC_11
1825 ENUMX
1826   BFD_RELOC_SPARC_OLO10
1827 ENUMX
1828   BFD_RELOC_SPARC_HH22
1829 ENUMX
1830   BFD_RELOC_SPARC_HM10
1831 ENUMX
1832   BFD_RELOC_SPARC_LM22
1833 ENUMX
1834   BFD_RELOC_SPARC_PC_HH22
1835 ENUMX
1836   BFD_RELOC_SPARC_PC_HM10
1837 ENUMX
1838   BFD_RELOC_SPARC_PC_LM22
1839 ENUMX
1840   BFD_RELOC_SPARC_WDISP16
1841 ENUMX
1842   BFD_RELOC_SPARC_WDISP19
1843 ENUMX
1844   BFD_RELOC_SPARC_7
1845 ENUMX
1846   BFD_RELOC_SPARC_6
1847 ENUMX
1848   BFD_RELOC_SPARC_5
1849 ENUMEQX
1850   BFD_RELOC_SPARC_DISP64
1851   BFD_RELOC_64_PCREL
1852 ENUMX
1853   BFD_RELOC_SPARC_PLT32
1854 ENUMX
1855   BFD_RELOC_SPARC_PLT64
1856 ENUMX
1857   BFD_RELOC_SPARC_HIX22
1858 ENUMX
1859   BFD_RELOC_SPARC_LOX10
1860 ENUMX
1861   BFD_RELOC_SPARC_H44
1862 ENUMX
1863   BFD_RELOC_SPARC_M44
1864 ENUMX
1865   BFD_RELOC_SPARC_L44
1866 ENUMX
1867   BFD_RELOC_SPARC_REGISTER
1868 ENUMDOC
1869   SPARC64 relocations
1870
1871 ENUM
1872   BFD_RELOC_SPARC_REV32
1873 ENUMDOC
1874   SPARC little endian relocation
1875 ENUM
1876   BFD_RELOC_SPARC_TLS_GD_HI22
1877 ENUMX
1878   BFD_RELOC_SPARC_TLS_GD_LO10
1879 ENUMX
1880   BFD_RELOC_SPARC_TLS_GD_ADD
1881 ENUMX
1882   BFD_RELOC_SPARC_TLS_GD_CALL
1883 ENUMX
1884   BFD_RELOC_SPARC_TLS_LDM_HI22
1885 ENUMX
1886   BFD_RELOC_SPARC_TLS_LDM_LO10
1887 ENUMX
1888   BFD_RELOC_SPARC_TLS_LDM_ADD
1889 ENUMX
1890   BFD_RELOC_SPARC_TLS_LDM_CALL
1891 ENUMX
1892   BFD_RELOC_SPARC_TLS_LDO_HIX22
1893 ENUMX
1894   BFD_RELOC_SPARC_TLS_LDO_LOX10
1895 ENUMX
1896   BFD_RELOC_SPARC_TLS_LDO_ADD
1897 ENUMX
1898   BFD_RELOC_SPARC_TLS_IE_HI22
1899 ENUMX
1900   BFD_RELOC_SPARC_TLS_IE_LO10
1901 ENUMX
1902   BFD_RELOC_SPARC_TLS_IE_LD
1903 ENUMX
1904   BFD_RELOC_SPARC_TLS_IE_LDX
1905 ENUMX
1906   BFD_RELOC_SPARC_TLS_IE_ADD
1907 ENUMX
1908   BFD_RELOC_SPARC_TLS_LE_HIX22
1909 ENUMX
1910   BFD_RELOC_SPARC_TLS_LE_LOX10
1911 ENUMX
1912   BFD_RELOC_SPARC_TLS_DTPMOD32
1913 ENUMX
1914   BFD_RELOC_SPARC_TLS_DTPMOD64
1915 ENUMX
1916   BFD_RELOC_SPARC_TLS_DTPOFF32
1917 ENUMX
1918   BFD_RELOC_SPARC_TLS_DTPOFF64
1919 ENUMX
1920   BFD_RELOC_SPARC_TLS_TPOFF32
1921 ENUMX
1922   BFD_RELOC_SPARC_TLS_TPOFF64
1923 ENUMDOC
1924   SPARC TLS relocations
1925
1926 ENUM
1927   BFD_RELOC_ALPHA_GPDISP_HI16
1928 ENUMDOC
1929   Alpha ECOFF and ELF relocations.  Some of these treat the symbol or
1930      "addend" in some special way.
1931   For GPDISP_HI16 ("gpdisp") relocations, the symbol is ignored when
1932      writing; when reading, it will be the absolute section symbol.  The
1933      addend is the displacement in bytes of the "lda" instruction from
1934      the "ldah" instruction (which is at the address of this reloc).
1935 ENUM
1936   BFD_RELOC_ALPHA_GPDISP_LO16
1937 ENUMDOC
1938   For GPDISP_LO16 ("ignore") relocations, the symbol is handled as
1939      with GPDISP_HI16 relocs.  The addend is ignored when writing the
1940      relocations out, and is filled in with the file's GP value on
1941      reading, for convenience.
1942
1943 ENUM
1944   BFD_RELOC_ALPHA_GPDISP
1945 ENUMDOC
1946   The ELF GPDISP relocation is exactly the same as the GPDISP_HI16
1947      relocation except that there is no accompanying GPDISP_LO16
1948      relocation.
1949
1950 ENUM
1951   BFD_RELOC_ALPHA_LITERAL
1952 ENUMX
1953   BFD_RELOC_ALPHA_ELF_LITERAL
1954 ENUMX
1955   BFD_RELOC_ALPHA_LITUSE
1956 ENUMDOC
1957   The Alpha LITERAL/LITUSE relocs are produced by a symbol reference;
1958      the assembler turns it into a LDQ instruction to load the address of
1959      the symbol, and then fills in a register in the real instruction.
1960
1961      The LITERAL reloc, at the LDQ instruction, refers to the .lita
1962      section symbol.  The addend is ignored when writing, but is filled
1963      in with the file's GP value on reading, for convenience, as with the
1964      GPDISP_LO16 reloc.
1965
1966      The ELF_LITERAL reloc is somewhere between 16_GOTOFF and GPDISP_LO16.
1967      It should refer to the symbol to be referenced, as with 16_GOTOFF,
1968      but it generates output not based on the position within the .got
1969      section, but relative to the GP value chosen for the file during the
1970      final link stage.
1971
1972      The LITUSE reloc, on the instruction using the loaded address, gives
1973      information to the linker that it might be able to use to optimize
1974      away some literal section references.  The symbol is ignored (read
1975      as the absolute section symbol), and the "addend" indicates the type
1976      of instruction using the register:
1977               1 - "memory" fmt insn
1978               2 - byte-manipulation (byte offset reg)
1979               3 - jsr (target of branch)
1980
1981 ENUM
1982   BFD_RELOC_ALPHA_HINT
1983 ENUMDOC
1984   The HINT relocation indicates a value that should be filled into the
1985      "hint" field of a jmp/jsr/ret instruction, for possible branch-
1986      prediction logic which may be provided on some processors.
1987
1988 ENUM
1989   BFD_RELOC_ALPHA_LINKAGE
1990 ENUMDOC
1991   The LINKAGE relocation outputs a linkage pair in the object file,
1992      which is filled by the linker.
1993
1994 ENUM
1995   BFD_RELOC_ALPHA_CODEADDR
1996 ENUMDOC
1997   The CODEADDR relocation outputs a STO_CA in the object file,
1998      which is filled by the linker.
1999
2000 ENUM
2001   BFD_RELOC_ALPHA_GPREL_HI16
2002 ENUMX
2003   BFD_RELOC_ALPHA_GPREL_LO16
2004 ENUMDOC
2005   The GPREL_HI/LO relocations together form a 32-bit offset from the
2006      GP register.
2007
2008 ENUM
2009   BFD_RELOC_ALPHA_BRSGP
2010 ENUMDOC
2011   Like BFD_RELOC_23_PCREL_S2, except that the source and target must
2012   share a common GP, and the target address is adjusted for
2013   STO_ALPHA_STD_GPLOAD.
2014
2015 ENUM
2016   BFD_RELOC_ALPHA_TLSGD
2017 ENUMX
2018   BFD_RELOC_ALPHA_TLSLDM
2019 ENUMX
2020   BFD_RELOC_ALPHA_DTPMOD64
2021 ENUMX
2022   BFD_RELOC_ALPHA_GOTDTPREL16
2023 ENUMX
2024   BFD_RELOC_ALPHA_DTPREL64
2025 ENUMX
2026   BFD_RELOC_ALPHA_DTPREL_HI16
2027 ENUMX
2028   BFD_RELOC_ALPHA_DTPREL_LO16
2029 ENUMX
2030   BFD_RELOC_ALPHA_DTPREL16
2031 ENUMX
2032   BFD_RELOC_ALPHA_GOTTPREL16
2033 ENUMX
2034   BFD_RELOC_ALPHA_TPREL64
2035 ENUMX
2036   BFD_RELOC_ALPHA_TPREL_HI16
2037 ENUMX
2038   BFD_RELOC_ALPHA_TPREL_LO16
2039 ENUMX
2040   BFD_RELOC_ALPHA_TPREL16
2041 ENUMDOC
2042   Alpha thread-local storage relocations.
2043
2044 ENUM
2045   BFD_RELOC_MIPS_JMP
2046 ENUMDOC
2047   Bits 27..2 of the relocation address shifted right 2 bits;
2048      simple reloc otherwise.
2049
2050 ENUM
2051   BFD_RELOC_MIPS16_JMP
2052 ENUMDOC
2053   The MIPS16 jump instruction.
2054
2055 ENUM
2056   BFD_RELOC_MIPS16_GPREL
2057 ENUMDOC
2058   MIPS16 GP relative reloc.
2059
2060 ENUM
2061   BFD_RELOC_HI16
2062 ENUMDOC
2063   High 16 bits of 32-bit value; simple reloc.
2064 ENUM
2065   BFD_RELOC_HI16_S
2066 ENUMDOC
2067   High 16 bits of 32-bit value but the low 16 bits will be sign
2068      extended and added to form the final result.  If the low 16
2069      bits form a negative number, we need to add one to the high value
2070      to compensate for the borrow when the low bits are added.
2071 ENUM
2072   BFD_RELOC_LO16
2073 ENUMDOC
2074   Low 16 bits.
2075 ENUM
2076   BFD_RELOC_PCREL_HI16_S
2077 ENUMDOC
2078   Like BFD_RELOC_HI16_S, but PC relative.
2079 ENUM
2080   BFD_RELOC_PCREL_LO16
2081 ENUMDOC
2082   Like BFD_RELOC_LO16, but PC relative.
2083
2084 ENUM
2085   BFD_RELOC_MIPS_LITERAL
2086 ENUMDOC
2087   Relocation against a MIPS literal section.
2088
2089 ENUM
2090   BFD_RELOC_MIPS_GOT16
2091 ENUMX
2092   BFD_RELOC_MIPS_CALL16
2093 ENUMX
2094   BFD_RELOC_MIPS_GOT_HI16
2095 ENUMX
2096   BFD_RELOC_MIPS_GOT_LO16
2097 ENUMX
2098   BFD_RELOC_MIPS_CALL_HI16
2099 ENUMX
2100   BFD_RELOC_MIPS_CALL_LO16
2101 ENUMX
2102   BFD_RELOC_MIPS_SUB
2103 ENUMX
2104   BFD_RELOC_MIPS_GOT_PAGE
2105 ENUMX
2106   BFD_RELOC_MIPS_GOT_OFST
2107 ENUMX
2108   BFD_RELOC_MIPS_GOT_DISP
2109 ENUMX
2110   BFD_RELOC_MIPS_SHIFT5
2111 ENUMX
2112   BFD_RELOC_MIPS_SHIFT6
2113 ENUMX
2114   BFD_RELOC_MIPS_INSERT_A
2115 ENUMX
2116   BFD_RELOC_MIPS_INSERT_B
2117 ENUMX
2118   BFD_RELOC_MIPS_DELETE
2119 ENUMX
2120   BFD_RELOC_MIPS_HIGHEST
2121 ENUMX
2122   BFD_RELOC_MIPS_HIGHER
2123 ENUMX
2124   BFD_RELOC_MIPS_SCN_DISP
2125 ENUMX
2126   BFD_RELOC_MIPS_REL16
2127 ENUMX
2128   BFD_RELOC_MIPS_RELGOT
2129 ENUMX
2130   BFD_RELOC_MIPS_JALR
2131 COMMENT
2132 ENUM
2133   BFD_RELOC_FRV_LABEL16
2134 ENUMX
2135   BFD_RELOC_FRV_LABEL24
2136 ENUMX
2137   BFD_RELOC_FRV_LO16
2138 ENUMX
2139   BFD_RELOC_FRV_HI16
2140 ENUMX
2141   BFD_RELOC_FRV_GPREL12
2142 ENUMX
2143   BFD_RELOC_FRV_GPRELU12
2144 ENUMX
2145   BFD_RELOC_FRV_GPREL32
2146 ENUMX
2147   BFD_RELOC_FRV_GPRELHI
2148 ENUMX
2149   BFD_RELOC_FRV_GPRELLO
2150 ENUMDOC
2151   Fujitsu Frv Relocations.
2152 COMMENT
2153 COMMENT
2154 ENUMDOC
2155   MIPS ELF relocations.
2156
2157 COMMENT
2158
2159 ENUM
2160   BFD_RELOC_386_GOT32
2161 ENUMX
2162   BFD_RELOC_386_PLT32
2163 ENUMX
2164   BFD_RELOC_386_COPY
2165 ENUMX
2166   BFD_RELOC_386_GLOB_DAT
2167 ENUMX
2168   BFD_RELOC_386_JUMP_SLOT
2169 ENUMX
2170   BFD_RELOC_386_RELATIVE
2171 ENUMX
2172   BFD_RELOC_386_GOTOFF
2173 ENUMX
2174   BFD_RELOC_386_GOTPC
2175 ENUMX
2176   BFD_RELOC_386_TLS_TPOFF
2177 ENUMX
2178   BFD_RELOC_386_TLS_IE
2179 ENUMX
2180   BFD_RELOC_386_TLS_GOTIE
2181 ENUMX
2182   BFD_RELOC_386_TLS_LE
2183 ENUMX
2184   BFD_RELOC_386_TLS_GD
2185 ENUMX
2186   BFD_RELOC_386_TLS_LDM
2187 ENUMX
2188   BFD_RELOC_386_TLS_LDO_32
2189 ENUMX
2190   BFD_RELOC_386_TLS_IE_32
2191 ENUMX
2192   BFD_RELOC_386_TLS_LE_32
2193 ENUMX
2194   BFD_RELOC_386_TLS_DTPMOD32
2195 ENUMX
2196   BFD_RELOC_386_TLS_DTPOFF32
2197 ENUMX
2198   BFD_RELOC_386_TLS_TPOFF32
2199 ENUMDOC
2200   i386/elf relocations
2201
2202 ENUM
2203   BFD_RELOC_X86_64_GOT32
2204 ENUMX
2205   BFD_RELOC_X86_64_PLT32
2206 ENUMX
2207   BFD_RELOC_X86_64_COPY
2208 ENUMX
2209   BFD_RELOC_X86_64_GLOB_DAT
2210 ENUMX
2211   BFD_RELOC_X86_64_JUMP_SLOT
2212 ENUMX
2213   BFD_RELOC_X86_64_RELATIVE
2214 ENUMX
2215   BFD_RELOC_X86_64_GOTPCREL
2216 ENUMX
2217   BFD_RELOC_X86_64_32S
2218 ENUMX
2219   BFD_RELOC_X86_64_DTPMOD64
2220 ENUMX
2221   BFD_RELOC_X86_64_DTPOFF64
2222 ENUMX
2223   BFD_RELOC_X86_64_TPOFF64
2224 ENUMX
2225   BFD_RELOC_X86_64_TLSGD
2226 ENUMX
2227   BFD_RELOC_X86_64_TLSLD
2228 ENUMX
2229   BFD_RELOC_X86_64_DTPOFF32
2230 ENUMX
2231   BFD_RELOC_X86_64_GOTTPOFF
2232 ENUMX
2233   BFD_RELOC_X86_64_TPOFF32
2234 ENUMDOC
2235   x86-64/elf relocations
2236
2237 ENUM
2238   BFD_RELOC_NS32K_IMM_8
2239 ENUMX
2240   BFD_RELOC_NS32K_IMM_16
2241 ENUMX
2242   BFD_RELOC_NS32K_IMM_32
2243 ENUMX
2244   BFD_RELOC_NS32K_IMM_8_PCREL
2245 ENUMX
2246   BFD_RELOC_NS32K_IMM_16_PCREL
2247 ENUMX
2248   BFD_RELOC_NS32K_IMM_32_PCREL
2249 ENUMX
2250   BFD_RELOC_NS32K_DISP_8
2251 ENUMX
2252   BFD_RELOC_NS32K_DISP_16
2253 ENUMX
2254   BFD_RELOC_NS32K_DISP_32
2255 ENUMX
2256   BFD_RELOC_NS32K_DISP_8_PCREL
2257 ENUMX
2258   BFD_RELOC_NS32K_DISP_16_PCREL
2259 ENUMX
2260   BFD_RELOC_NS32K_DISP_32_PCREL
2261 ENUMDOC
2262   ns32k relocations
2263
2264 ENUM
2265   BFD_RELOC_PDP11_DISP_8_PCREL
2266 ENUMX
2267   BFD_RELOC_PDP11_DISP_6_PCREL
2268 ENUMDOC
2269   PDP11 relocations
2270
2271 ENUM
2272   BFD_RELOC_PJ_CODE_HI16
2273 ENUMX
2274   BFD_RELOC_PJ_CODE_LO16
2275 ENUMX
2276   BFD_RELOC_PJ_CODE_DIR16
2277 ENUMX
2278   BFD_RELOC_PJ_CODE_DIR32
2279 ENUMX
2280   BFD_RELOC_PJ_CODE_REL16
2281 ENUMX
2282   BFD_RELOC_PJ_CODE_REL32
2283 ENUMDOC
2284   Picojava relocs.  Not all of these appear in object files.
2285
2286 ENUM
2287   BFD_RELOC_PPC_B26
2288 ENUMX
2289   BFD_RELOC_PPC_BA26
2290 ENUMX
2291   BFD_RELOC_PPC_TOC16
2292 ENUMX
2293   BFD_RELOC_PPC_B16
2294 ENUMX
2295   BFD_RELOC_PPC_B16_BRTAKEN
2296 ENUMX
2297   BFD_RELOC_PPC_B16_BRNTAKEN
2298 ENUMX
2299   BFD_RELOC_PPC_BA16
2300 ENUMX
2301   BFD_RELOC_PPC_BA16_BRTAKEN
2302 ENUMX
2303   BFD_RELOC_PPC_BA16_BRNTAKEN
2304 ENUMX
2305   BFD_RELOC_PPC_COPY
2306 ENUMX
2307   BFD_RELOC_PPC_GLOB_DAT
2308 ENUMX
2309   BFD_RELOC_PPC_JMP_SLOT
2310 ENUMX
2311   BFD_RELOC_PPC_RELATIVE
2312 ENUMX
2313   BFD_RELOC_PPC_LOCAL24PC
2314 ENUMX
2315   BFD_RELOC_PPC_EMB_NADDR32
2316 ENUMX
2317   BFD_RELOC_PPC_EMB_NADDR16
2318 ENUMX
2319   BFD_RELOC_PPC_EMB_NADDR16_LO
2320 ENUMX
2321   BFD_RELOC_PPC_EMB_NADDR16_HI
2322 ENUMX
2323   BFD_RELOC_PPC_EMB_NADDR16_HA
2324 ENUMX
2325   BFD_RELOC_PPC_EMB_SDAI16
2326 ENUMX
2327   BFD_RELOC_PPC_EMB_SDA2I16
2328 ENUMX
2329   BFD_RELOC_PPC_EMB_SDA2REL
2330 ENUMX
2331   BFD_RELOC_PPC_EMB_SDA21
2332 ENUMX
2333   BFD_RELOC_PPC_EMB_MRKREF
2334 ENUMX
2335   BFD_RELOC_PPC_EMB_RELSEC16
2336 ENUMX
2337   BFD_RELOC_PPC_EMB_RELST_LO
2338 ENUMX
2339   BFD_RELOC_PPC_EMB_RELST_HI
2340 ENUMX
2341   BFD_RELOC_PPC_EMB_RELST_HA
2342 ENUMX
2343   BFD_RELOC_PPC_EMB_BIT_FLD
2344 ENUMX
2345   BFD_RELOC_PPC_EMB_RELSDA
2346 ENUMX
2347   BFD_RELOC_PPC64_HIGHER
2348 ENUMX
2349   BFD_RELOC_PPC64_HIGHER_S
2350 ENUMX
2351   BFD_RELOC_PPC64_HIGHEST
2352 ENUMX
2353   BFD_RELOC_PPC64_HIGHEST_S
2354 ENUMX
2355   BFD_RELOC_PPC64_TOC16_LO
2356 ENUMX
2357   BFD_RELOC_PPC64_TOC16_HI
2358 ENUMX
2359   BFD_RELOC_PPC64_TOC16_HA
2360 ENUMX
2361   BFD_RELOC_PPC64_TOC
2362 ENUMX
2363   BFD_RELOC_PPC64_PLTGOT16
2364 ENUMX
2365   BFD_RELOC_PPC64_PLTGOT16_LO
2366 ENUMX
2367   BFD_RELOC_PPC64_PLTGOT16_HI
2368 ENUMX
2369   BFD_RELOC_PPC64_PLTGOT16_HA
2370 ENUMX
2371   BFD_RELOC_PPC64_ADDR16_DS
2372 ENUMX
2373   BFD_RELOC_PPC64_ADDR16_LO_DS
2374 ENUMX
2375   BFD_RELOC_PPC64_GOT16_DS
2376 ENUMX
2377   BFD_RELOC_PPC64_GOT16_LO_DS
2378 ENUMX
2379   BFD_RELOC_PPC64_PLT16_LO_DS
2380 ENUMX
2381   BFD_RELOC_PPC64_SECTOFF_DS
2382 ENUMX
2383   BFD_RELOC_PPC64_SECTOFF_LO_DS
2384 ENUMX
2385   BFD_RELOC_PPC64_TOC16_DS
2386 ENUMX
2387   BFD_RELOC_PPC64_TOC16_LO_DS
2388 ENUMX
2389   BFD_RELOC_PPC64_PLTGOT16_DS
2390 ENUMX
2391   BFD_RELOC_PPC64_PLTGOT16_LO_DS
2392 ENUMDOC
2393   Power(rs6000) and PowerPC relocations.
2394
2395 ENUM
2396   BFD_RELOC_PPC_TLS
2397 ENUMX
2398   BFD_RELOC_PPC_DTPMOD
2399 ENUMX
2400   BFD_RELOC_PPC_TPREL16
2401 ENUMX
2402   BFD_RELOC_PPC_TPREL16_LO
2403 ENUMX
2404   BFD_RELOC_PPC_TPREL16_HI
2405 ENUMX
2406   BFD_RELOC_PPC_TPREL16_HA
2407 ENUMX
2408   BFD_RELOC_PPC_TPREL
2409 ENUMX
2410   BFD_RELOC_PPC_DTPREL16
2411 ENUMX
2412   BFD_RELOC_PPC_DTPREL16_LO
2413 ENUMX
2414   BFD_RELOC_PPC_DTPREL16_HI
2415 ENUMX
2416   BFD_RELOC_PPC_DTPREL16_HA
2417 ENUMX
2418   BFD_RELOC_PPC_DTPREL
2419 ENUMX
2420   BFD_RELOC_PPC_GOT_TLSGD16
2421 ENUMX
2422   BFD_RELOC_PPC_GOT_TLSGD16_LO
2423 ENUMX
2424   BFD_RELOC_PPC_GOT_TLSGD16_HI
2425 ENUMX
2426   BFD_RELOC_PPC_GOT_TLSGD16_HA
2427 ENUMX
2428   BFD_RELOC_PPC_GOT_TLSLD16
2429 ENUMX
2430   BFD_RELOC_PPC_GOT_TLSLD16_LO
2431 ENUMX
2432   BFD_RELOC_PPC_GOT_TLSLD16_HI
2433 ENUMX
2434   BFD_RELOC_PPC_GOT_TLSLD16_HA
2435 ENUMX
2436   BFD_RELOC_PPC_GOT_TPREL16
2437 ENUMX
2438   BFD_RELOC_PPC_GOT_TPREL16_LO
2439 ENUMX
2440   BFD_RELOC_PPC_GOT_TPREL16_HI
2441 ENUMX
2442   BFD_RELOC_PPC_GOT_TPREL16_HA
2443 ENUMX
2444   BFD_RELOC_PPC_GOT_DTPREL16
2445 ENUMX
2446   BFD_RELOC_PPC_GOT_DTPREL16_LO
2447 ENUMX
2448   BFD_RELOC_PPC_GOT_DTPREL16_HI
2449 ENUMX
2450   BFD_RELOC_PPC_GOT_DTPREL16_HA
2451 ENUMX
2452   BFD_RELOC_PPC64_TPREL16_DS
2453 ENUMX
2454   BFD_RELOC_PPC64_TPREL16_LO_DS
2455 ENUMX
2456   BFD_RELOC_PPC64_TPREL16_HIGHER
2457 ENUMX
2458   BFD_RELOC_PPC64_TPREL16_HIGHERA
2459 ENUMX
2460   BFD_RELOC_PPC64_TPREL16_HIGHEST
2461 ENUMX
2462   BFD_RELOC_PPC64_TPREL16_HIGHESTA
2463 ENUMX
2464   BFD_RELOC_PPC64_DTPREL16_DS
2465 ENUMX
2466   BFD_RELOC_PPC64_DTPREL16_LO_DS
2467 ENUMX
2468   BFD_RELOC_PPC64_DTPREL16_HIGHER
2469 ENUMX
2470   BFD_RELOC_PPC64_DTPREL16_HIGHERA
2471 ENUMX
2472   BFD_RELOC_PPC64_DTPREL16_HIGHEST
2473 ENUMX
2474   BFD_RELOC_PPC64_DTPREL16_HIGHESTA
2475 ENUMDOC
2476   PowerPC and PowerPC64 thread-local storage relocations.
2477
2478 ENUM
2479   BFD_RELOC_I370_D12
2480 ENUMDOC
2481   IBM 370/390 relocations
2482
2483 ENUM
2484   BFD_RELOC_CTOR
2485 ENUMDOC
2486   The type of reloc used to build a contructor table - at the moment
2487   probably a 32 bit wide absolute relocation, but the target can choose.
2488   It generally does map to one of the other relocation types.
2489
2490 ENUM
2491   BFD_RELOC_ARM_PCREL_BRANCH
2492 ENUMDOC
2493   ARM 26 bit pc-relative branch.  The lowest two bits must be zero and are
2494   not stored in the instruction.
2495 ENUM
2496   BFD_RELOC_ARM_PCREL_BLX
2497 ENUMDOC
2498   ARM 26 bit pc-relative branch.  The lowest bit must be zero and is
2499   not stored in the instruction.  The 2nd lowest bit comes from a 1 bit
2500   field in the instruction.
2501 ENUM
2502   BFD_RELOC_THUMB_PCREL_BLX
2503 ENUMDOC
2504   Thumb 22 bit pc-relative branch.  The lowest bit must be zero and is
2505   not stored in the instruction.  The 2nd lowest bit comes from a 1 bit
2506   field in the instruction.
2507 ENUM
2508   BFD_RELOC_ARM_IMMEDIATE
2509 ENUMX
2510   BFD_RELOC_ARM_ADRL_IMMEDIATE
2511 ENUMX
2512   BFD_RELOC_ARM_OFFSET_IMM
2513 ENUMX
2514   BFD_RELOC_ARM_SHIFT_IMM
2515 ENUMX
2516   BFD_RELOC_ARM_SWI
2517 ENUMX
2518   BFD_RELOC_ARM_MULTI
2519 ENUMX
2520   BFD_RELOC_ARM_CP_OFF_IMM
2521 ENUMX
2522   BFD_RELOC_ARM_CP_OFF_IMM_S2
2523 ENUMX
2524   BFD_RELOC_ARM_ADR_IMM
2525 ENUMX
2526   BFD_RELOC_ARM_LDR_IMM
2527 ENUMX
2528   BFD_RELOC_ARM_LITERAL
2529 ENUMX
2530   BFD_RELOC_ARM_IN_POOL
2531 ENUMX
2532   BFD_RELOC_ARM_OFFSET_IMM8
2533 ENUMX
2534   BFD_RELOC_ARM_HWLITERAL
2535 ENUMX
2536   BFD_RELOC_ARM_THUMB_ADD
2537 ENUMX
2538   BFD_RELOC_ARM_THUMB_IMM
2539 ENUMX
2540   BFD_RELOC_ARM_THUMB_SHIFT
2541 ENUMX
2542   BFD_RELOC_ARM_THUMB_OFFSET
2543 ENUMX
2544   BFD_RELOC_ARM_GOT12
2545 ENUMX
2546   BFD_RELOC_ARM_GOT32
2547 ENUMX
2548   BFD_RELOC_ARM_JUMP_SLOT
2549 ENUMX
2550   BFD_RELOC_ARM_COPY
2551 ENUMX
2552   BFD_RELOC_ARM_GLOB_DAT
2553 ENUMX
2554   BFD_RELOC_ARM_PLT32
2555 ENUMX
2556   BFD_RELOC_ARM_RELATIVE
2557 ENUMX
2558   BFD_RELOC_ARM_GOTOFF
2559 ENUMX
2560   BFD_RELOC_ARM_GOTPC
2561 ENUMDOC
2562   These relocs are only used within the ARM assembler.  They are not
2563   (at present) written to any object files.
2564
2565 ENUM
2566   BFD_RELOC_SH_PCDISP8BY2
2567 ENUMX
2568   BFD_RELOC_SH_PCDISP12BY2
2569 ENUMX
2570   BFD_RELOC_SH_IMM4
2571 ENUMX
2572   BFD_RELOC_SH_IMM4BY2
2573 ENUMX
2574   BFD_RELOC_SH_IMM4BY4
2575 ENUMX
2576   BFD_RELOC_SH_IMM8
2577 ENUMX
2578   BFD_RELOC_SH_IMM8BY2
2579 ENUMX
2580   BFD_RELOC_SH_IMM8BY4
2581 ENUMX
2582   BFD_RELOC_SH_PCRELIMM8BY2
2583 ENUMX
2584   BFD_RELOC_SH_PCRELIMM8BY4
2585 ENUMX
2586   BFD_RELOC_SH_SWITCH16
2587 ENUMX
2588   BFD_RELOC_SH_SWITCH32
2589 ENUMX
2590   BFD_RELOC_SH_USES
2591 ENUMX
2592   BFD_RELOC_SH_COUNT
2593 ENUMX
2594   BFD_RELOC_SH_ALIGN
2595 ENUMX
2596   BFD_RELOC_SH_CODE
2597 ENUMX
2598   BFD_RELOC_SH_DATA
2599 ENUMX
2600   BFD_RELOC_SH_LABEL
2601 ENUMX
2602   BFD_RELOC_SH_LOOP_START
2603 ENUMX
2604   BFD_RELOC_SH_LOOP_END
2605 ENUMX
2606   BFD_RELOC_SH_COPY
2607 ENUMX
2608   BFD_RELOC_SH_GLOB_DAT
2609 ENUMX
2610   BFD_RELOC_SH_JMP_SLOT
2611 ENUMX
2612   BFD_RELOC_SH_RELATIVE
2613 ENUMX
2614   BFD_RELOC_SH_GOTPC
2615 ENUMX
2616   BFD_RELOC_SH_GOT_LOW16
2617 ENUMX
2618   BFD_RELOC_SH_GOT_MEDLOW16
2619 ENUMX
2620   BFD_RELOC_SH_GOT_MEDHI16
2621 ENUMX
2622   BFD_RELOC_SH_GOT_HI16
2623 ENUMX
2624   BFD_RELOC_SH_GOTPLT_LOW16
2625 ENUMX
2626   BFD_RELOC_SH_GOTPLT_MEDLOW16
2627 ENUMX
2628   BFD_RELOC_SH_GOTPLT_MEDHI16
2629 ENUMX
2630   BFD_RELOC_SH_GOTPLT_HI16
2631 ENUMX
2632   BFD_RELOC_SH_PLT_LOW16
2633 ENUMX
2634   BFD_RELOC_SH_PLT_MEDLOW16
2635 ENUMX
2636   BFD_RELOC_SH_PLT_MEDHI16
2637 ENUMX
2638   BFD_RELOC_SH_PLT_HI16
2639 ENUMX
2640   BFD_RELOC_SH_GOTOFF_LOW16
2641 ENUMX
2642   BFD_RELOC_SH_GOTOFF_MEDLOW16
2643 ENUMX
2644   BFD_RELOC_SH_GOTOFF_MEDHI16
2645 ENUMX
2646   BFD_RELOC_SH_GOTOFF_HI16
2647 ENUMX
2648   BFD_RELOC_SH_GOTPC_LOW16
2649 ENUMX
2650   BFD_RELOC_SH_GOTPC_MEDLOW16
2651 ENUMX
2652   BFD_RELOC_SH_GOTPC_MEDHI16
2653 ENUMX
2654   BFD_RELOC_SH_GOTPC_HI16
2655 ENUMX
2656   BFD_RELOC_SH_COPY64
2657 ENUMX
2658   BFD_RELOC_SH_GLOB_DAT64
2659 ENUMX
2660   BFD_RELOC_SH_JMP_SLOT64
2661 ENUMX
2662   BFD_RELOC_SH_RELATIVE64
2663 ENUMX
2664   BFD_RELOC_SH_GOT10BY4
2665 ENUMX
2666   BFD_RELOC_SH_GOT10BY8
2667 ENUMX
2668   BFD_RELOC_SH_GOTPLT10BY4
2669 ENUMX
2670   BFD_RELOC_SH_GOTPLT10BY8
2671 ENUMX
2672   BFD_RELOC_SH_GOTPLT32
2673 ENUMX
2674   BFD_RELOC_SH_SHMEDIA_CODE
2675 ENUMX
2676   BFD_RELOC_SH_IMMU5
2677 ENUMX
2678   BFD_RELOC_SH_IMMS6
2679 ENUMX
2680   BFD_RELOC_SH_IMMS6BY32
2681 ENUMX
2682   BFD_RELOC_SH_IMMU6
2683 ENUMX
2684   BFD_RELOC_SH_IMMS10
2685 ENUMX
2686   BFD_RELOC_SH_IMMS10BY2
2687 ENUMX
2688   BFD_RELOC_SH_IMMS10BY4
2689 ENUMX
2690   BFD_RELOC_SH_IMMS10BY8
2691 ENUMX
2692   BFD_RELOC_SH_IMMS16
2693 ENUMX
2694   BFD_RELOC_SH_IMMU16
2695 ENUMX
2696   BFD_RELOC_SH_IMM_LOW16
2697 ENUMX
2698   BFD_RELOC_SH_IMM_LOW16_PCREL
2699 ENUMX
2700   BFD_RELOC_SH_IMM_MEDLOW16
2701 ENUMX
2702   BFD_RELOC_SH_IMM_MEDLOW16_PCREL
2703 ENUMX
2704   BFD_RELOC_SH_IMM_MEDHI16
2705 ENUMX
2706   BFD_RELOC_SH_IMM_MEDHI16_PCREL
2707 ENUMX
2708   BFD_RELOC_SH_IMM_HI16
2709 ENUMX
2710   BFD_RELOC_SH_IMM_HI16_PCREL
2711 ENUMX
2712   BFD_RELOC_SH_PT_16
2713 ENUMX
2714   BFD_RELOC_SH_TLS_GD_32
2715 ENUMX
2716   BFD_RELOC_SH_TLS_LD_32
2717 ENUMX
2718   BFD_RELOC_SH_TLS_LDO_32
2719 ENUMX
2720   BFD_RELOC_SH_TLS_IE_32
2721 ENUMX
2722   BFD_RELOC_SH_TLS_LE_32
2723 ENUMX
2724   BFD_RELOC_SH_TLS_DTPMOD32
2725 ENUMX
2726   BFD_RELOC_SH_TLS_DTPOFF32
2727 ENUMX
2728   BFD_RELOC_SH_TLS_TPOFF32
2729 ENUMDOC
2730   Hitachi SH relocs.  Not all of these appear in object files.
2731
2732 ENUM
2733   BFD_RELOC_THUMB_PCREL_BRANCH9
2734 ENUMX
2735   BFD_RELOC_THUMB_PCREL_BRANCH12
2736 ENUMX
2737   BFD_RELOC_THUMB_PCREL_BRANCH23
2738 ENUMDOC
2739   Thumb 23-, 12- and 9-bit pc-relative branches.  The lowest bit must
2740   be zero and is not stored in the instruction.
2741
2742 ENUM
2743   BFD_RELOC_ARC_B22_PCREL
2744 ENUMDOC
2745   ARC Cores relocs.
2746   ARC 22 bit pc-relative branch.  The lowest two bits must be zero and are
2747   not stored in the instruction.  The high 20 bits are installed in bits 26
2748   through 7 of the instruction.
2749 ENUM
2750   BFD_RELOC_ARC_B26
2751 ENUMDOC
2752   ARC 26 bit absolute branch.  The lowest two bits must be zero and are not
2753   stored in the instruction.  The high 24 bits are installed in bits 23
2754   through 0.
2755
2756 ENUM
2757   BFD_RELOC_D10V_10_PCREL_R
2758 ENUMDOC
2759   Mitsubishi D10V relocs.
2760   This is a 10-bit reloc with the right 2 bits
2761   assumed to be 0.
2762 ENUM
2763   BFD_RELOC_D10V_10_PCREL_L
2764 ENUMDOC
2765   Mitsubishi D10V relocs.
2766   This is a 10-bit reloc with the right 2 bits
2767   assumed to be 0.  This is the same as the previous reloc
2768   except it is in the left container, i.e.,
2769   shifted left 15 bits.
2770 ENUM
2771   BFD_RELOC_D10V_18
2772 ENUMDOC
2773   This is an 18-bit reloc with the right 2 bits
2774   assumed to be 0.
2775 ENUM
2776   BFD_RELOC_D10V_18_PCREL
2777 ENUMDOC
2778   This is an 18-bit reloc with the right 2 bits
2779   assumed to be 0.
2780
2781 ENUM
2782   BFD_RELOC_D30V_6
2783 ENUMDOC
2784   Mitsubishi D30V relocs.
2785   This is a 6-bit absolute reloc.
2786 ENUM
2787   BFD_RELOC_D30V_9_PCREL
2788 ENUMDOC
2789   This is a 6-bit pc-relative reloc with
2790   the right 3 bits assumed to be 0.
2791 ENUM
2792   BFD_RELOC_D30V_9_PCREL_R
2793 ENUMDOC
2794   This is a 6-bit pc-relative reloc with
2795   the right 3 bits assumed to be 0. Same
2796   as the previous reloc but on the right side
2797   of the container.
2798 ENUM
2799   BFD_RELOC_D30V_15
2800 ENUMDOC
2801   This is a 12-bit absolute reloc with the
2802   right 3 bitsassumed to be 0.
2803 ENUM
2804   BFD_RELOC_D30V_15_PCREL
2805 ENUMDOC
2806   This is a 12-bit pc-relative reloc with
2807   the right 3 bits assumed to be 0.
2808 ENUM
2809   BFD_RELOC_D30V_15_PCREL_R
2810 ENUMDOC
2811   This is a 12-bit pc-relative reloc with
2812   the right 3 bits assumed to be 0. Same
2813   as the previous reloc but on the right side
2814   of the container.
2815 ENUM
2816   BFD_RELOC_D30V_21
2817 ENUMDOC
2818   This is an 18-bit absolute reloc with
2819   the right 3 bits assumed to be 0.
2820 ENUM
2821   BFD_RELOC_D30V_21_PCREL
2822 ENUMDOC
2823   This is an 18-bit pc-relative reloc with
2824   the right 3 bits assumed to be 0.
2825 ENUM
2826   BFD_RELOC_D30V_21_PCREL_R
2827 ENUMDOC
2828   This is an 18-bit pc-relative reloc with
2829   the right 3 bits assumed to be 0. Same
2830   as the previous reloc but on the right side
2831   of the container.
2832 ENUM
2833   BFD_RELOC_D30V_32
2834 ENUMDOC
2835   This is a 32-bit absolute reloc.
2836 ENUM
2837   BFD_RELOC_D30V_32_PCREL
2838 ENUMDOC
2839   This is a 32-bit pc-relative reloc.
2840
2841 ENUM
2842   BFD_RELOC_DLX_HI16_S
2843 ENUMDOC
2844   DLX relocs
2845 ENUM
2846   BFD_RELOC_DLX_LO16
2847 ENUMDOC
2848   DLX relocs
2849 ENUM
2850   BFD_RELOC_DLX_JMP26
2851 ENUMDOC
2852   DLX relocs
2853
2854 ENUM
2855   BFD_RELOC_M32R_24
2856 ENUMDOC
2857   Mitsubishi M32R relocs.
2858   This is a 24 bit absolute address.
2859 ENUM
2860   BFD_RELOC_M32R_10_PCREL
2861 ENUMDOC
2862   This is a 10-bit pc-relative reloc with the right 2 bits assumed to be 0.
2863 ENUM
2864   BFD_RELOC_M32R_18_PCREL
2865 ENUMDOC
2866   This is an 18-bit reloc with the right 2 bits assumed to be 0.
2867 ENUM
2868   BFD_RELOC_M32R_26_PCREL
2869 ENUMDOC
2870   This is a 26-bit reloc with the right 2 bits assumed to be 0.
2871 ENUM
2872   BFD_RELOC_M32R_HI16_ULO
2873 ENUMDOC
2874   This is a 16-bit reloc containing the high 16 bits of an address
2875   used when the lower 16 bits are treated as unsigned.
2876 ENUM
2877   BFD_RELOC_M32R_HI16_SLO
2878 ENUMDOC
2879   This is a 16-bit reloc containing the high 16 bits of an address
2880   used when the lower 16 bits are treated as signed.
2881 ENUM
2882   BFD_RELOC_M32R_LO16
2883 ENUMDOC
2884   This is a 16-bit reloc containing the lower 16 bits of an address.
2885 ENUM
2886   BFD_RELOC_M32R_SDA16
2887 ENUMDOC
2888   This is a 16-bit reloc containing the small data area offset for use in
2889   add3, load, and store instructions.
2890
2891 ENUM
2892   BFD_RELOC_V850_9_PCREL
2893 ENUMDOC
2894   This is a 9-bit reloc
2895 ENUM
2896   BFD_RELOC_V850_22_PCREL
2897 ENUMDOC
2898   This is a 22-bit reloc
2899
2900 ENUM
2901   BFD_RELOC_V850_SDA_16_16_OFFSET
2902 ENUMDOC
2903   This is a 16 bit offset from the short data area pointer.
2904 ENUM
2905   BFD_RELOC_V850_SDA_15_16_OFFSET
2906 ENUMDOC
2907   This is a 16 bit offset (of which only 15 bits are used) from the
2908   short data area pointer.
2909 ENUM
2910   BFD_RELOC_V850_ZDA_16_16_OFFSET
2911 ENUMDOC
2912   This is a 16 bit offset from the zero data area pointer.
2913 ENUM
2914   BFD_RELOC_V850_ZDA_15_16_OFFSET
2915 ENUMDOC
2916   This is a 16 bit offset (of which only 15 bits are used) from the
2917   zero data area pointer.
2918 ENUM
2919   BFD_RELOC_V850_TDA_6_8_OFFSET
2920 ENUMDOC
2921   This is an 8 bit offset (of which only 6 bits are used) from the
2922   tiny data area pointer.
2923 ENUM
2924   BFD_RELOC_V850_TDA_7_8_OFFSET
2925 ENUMDOC
2926   This is an 8bit offset (of which only 7 bits are used) from the tiny
2927   data area pointer.
2928 ENUM
2929   BFD_RELOC_V850_TDA_7_7_OFFSET
2930 ENUMDOC
2931   This is a 7 bit offset from the tiny data area pointer.
2932 ENUM
2933   BFD_RELOC_V850_TDA_16_16_OFFSET
2934 ENUMDOC
2935   This is a 16 bit offset from the tiny data area pointer.
2936 COMMENT
2937 ENUM
2938   BFD_RELOC_V850_TDA_4_5_OFFSET
2939 ENUMDOC
2940   This is a 5 bit offset (of which only 4 bits are used) from the tiny
2941   data area pointer.
2942 ENUM
2943   BFD_RELOC_V850_TDA_4_4_OFFSET
2944 ENUMDOC
2945   This is a 4 bit offset from the tiny data area pointer.
2946 ENUM
2947   BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
2948 ENUMDOC
2949   This is a 16 bit offset from the short data area pointer, with the
2950   bits placed non-contigously in the instruction.
2951 ENUM
2952   BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
2953 ENUMDOC
2954   This is a 16 bit offset from the zero data area pointer, with the
2955   bits placed non-contigously in the instruction.
2956 ENUM
2957   BFD_RELOC_V850_CALLT_6_7_OFFSET
2958 ENUMDOC
2959   This is a 6 bit offset from the call table base pointer.
2960 ENUM
2961   BFD_RELOC_V850_CALLT_16_16_OFFSET
2962 ENUMDOC
2963   This is a 16 bit offset from the call table base pointer.
2964 ENUM
2965   BFD_RELOC_V850_LONGCALL
2966 ENUMDOC
2967   Used for relaxing indirect function calls.
2968 ENUM
2969   BFD_RELOC_V850_LONGJUMP
2970 ENUMDOC
2971   Used for relaxing indirect jumps.
2972 ENUM
2973   BFD_RELOC_V850_ALIGN
2974 ENUMDOC
2975   Used to maintain alignment whilst relaxing.
2976 ENUM
2977   BFD_RELOC_MN10300_32_PCREL
2978 ENUMDOC
2979   This is a 32bit pcrel reloc for the mn10300, offset by two bytes in the
2980   instruction.
2981 ENUM
2982   BFD_RELOC_MN10300_16_PCREL
2983 ENUMDOC
2984   This is a 16bit pcrel reloc for the mn10300, offset by two bytes in the
2985   instruction.
2986
2987 ENUM
2988   BFD_RELOC_TIC30_LDP
2989 ENUMDOC
2990   This is a 8bit DP reloc for the tms320c30, where the most
2991   significant 8 bits of a 24 bit word are placed into the least
2992   significant 8 bits of the opcode.
2993
2994 ENUM
2995   BFD_RELOC_TIC54X_PARTLS7
2996 ENUMDOC
2997   This is a 7bit reloc for the tms320c54x, where the least
2998   significant 7 bits of a 16 bit word are placed into the least
2999   significant 7 bits of the opcode.
3000
3001 ENUM
3002   BFD_RELOC_TIC54X_PARTMS9
3003 ENUMDOC
3004   This is a 9bit DP reloc for the tms320c54x, where the most
3005   significant 9 bits of a 16 bit word are placed into the least
3006   significant 9 bits of the opcode.
3007
3008 ENUM
3009   BFD_RELOC_TIC54X_23
3010 ENUMDOC
3011   This is an extended address 23-bit reloc for the tms320c54x.
3012
3013 ENUM
3014   BFD_RELOC_TIC54X_16_OF_23
3015 ENUMDOC
3016   This is a 16-bit reloc for the tms320c54x, where the least
3017   significant 16 bits of a 23-bit extended address are placed into
3018   the opcode.
3019
3020 ENUM
3021   BFD_RELOC_TIC54X_MS7_OF_23
3022 ENUMDOC
3023   This is a reloc for the tms320c54x, where the most
3024   significant 7 bits of a 23-bit extended address are placed into
3025   the opcode.
3026
3027 ENUM
3028   BFD_RELOC_FR30_48
3029 ENUMDOC
3030   This is a 48 bit reloc for the FR30 that stores 32 bits.
3031 ENUM
3032   BFD_RELOC_FR30_20
3033 ENUMDOC
3034   This is a 32 bit reloc for the FR30 that stores 20 bits split up into
3035   two sections.
3036 ENUM
3037   BFD_RELOC_FR30_6_IN_4
3038 ENUMDOC
3039   This is a 16 bit reloc for the FR30 that stores a 6 bit word offset in
3040   4 bits.
3041 ENUM
3042   BFD_RELOC_FR30_8_IN_8
3043 ENUMDOC
3044   This is a 16 bit reloc for the FR30 that stores an 8 bit byte offset
3045   into 8 bits.
3046 ENUM
3047   BFD_RELOC_FR30_9_IN_8
3048 ENUMDOC
3049   This is a 16 bit reloc for the FR30 that stores a 9 bit short offset
3050   into 8 bits.
3051 ENUM
3052   BFD_RELOC_FR30_10_IN_8
3053 ENUMDOC
3054   This is a 16 bit reloc for the FR30 that stores a 10 bit word offset
3055   into 8 bits.
3056 ENUM
3057   BFD_RELOC_FR30_9_PCREL
3058 ENUMDOC
3059   This is a 16 bit reloc for the FR30 that stores a 9 bit pc relative
3060   short offset into 8 bits.
3061 ENUM
3062   BFD_RELOC_FR30_12_PCREL
3063 ENUMDOC
3064   This is a 16 bit reloc for the FR30 that stores a 12 bit pc relative
3065   short offset into 11 bits.
3066
3067 ENUM
3068   BFD_RELOC_MCORE_PCREL_IMM8BY4
3069 ENUMX
3070   BFD_RELOC_MCORE_PCREL_IMM11BY2
3071 ENUMX
3072   BFD_RELOC_MCORE_PCREL_IMM4BY2
3073 ENUMX
3074   BFD_RELOC_MCORE_PCREL_32
3075 ENUMX
3076   BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2
3077 ENUMX
3078   BFD_RELOC_MCORE_RVA
3079 ENUMDOC
3080   Motorola Mcore relocations.
3081
3082 ENUM
3083   BFD_RELOC_MMIX_GETA
3084 ENUMX
3085   BFD_RELOC_MMIX_GETA_1
3086 ENUMX
3087   BFD_RELOC_MMIX_GETA_2
3088 ENUMX
3089   BFD_RELOC_MMIX_GETA_3
3090 ENUMDOC
3091   These are relocations for the GETA instruction.
3092 ENUM
3093   BFD_RELOC_MMIX_CBRANCH
3094 ENUMX
3095   BFD_RELOC_MMIX_CBRANCH_J
3096 ENUMX
3097   BFD_RELOC_MMIX_CBRANCH_1
3098 ENUMX
3099   BFD_RELOC_MMIX_CBRANCH_2
3100 ENUMX
3101   BFD_RELOC_MMIX_CBRANCH_3
3102 ENUMDOC
3103   These are relocations for a conditional branch instruction.
3104 ENUM
3105   BFD_RELOC_MMIX_PUSHJ
3106 ENUMX
3107   BFD_RELOC_MMIX_PUSHJ_1
3108 ENUMX
3109   BFD_RELOC_MMIX_PUSHJ_2
3110 ENUMX
3111   BFD_RELOC_MMIX_PUSHJ_3
3112 ENUMDOC
3113   These are relocations for the PUSHJ instruction.
3114 ENUM
3115   BFD_RELOC_MMIX_JMP
3116 ENUMX
3117   BFD_RELOC_MMIX_JMP_1
3118 ENUMX
3119   BFD_RELOC_MMIX_JMP_2
3120 ENUMX
3121   BFD_RELOC_MMIX_JMP_3
3122 ENUMDOC
3123   These are relocations for the JMP instruction.
3124 ENUM
3125   BFD_RELOC_MMIX_ADDR19
3126 ENUMDOC
3127   This is a relocation for a relative address as in a GETA instruction or
3128   a branch.
3129 ENUM
3130   BFD_RELOC_MMIX_ADDR27
3131 ENUMDOC
3132   This is a relocation for a relative address as in a JMP instruction.
3133 ENUM
3134   BFD_RELOC_MMIX_REG_OR_BYTE
3135 ENUMDOC
3136   This is a relocation for an instruction field that may be a general
3137   register or a value 0..255.
3138 ENUM
3139   BFD_RELOC_MMIX_REG
3140 ENUMDOC
3141   This is a relocation for an instruction field that may be a general
3142   register.
3143 ENUM
3144   BFD_RELOC_MMIX_BASE_PLUS_OFFSET
3145 ENUMDOC
3146   This is a relocation for two instruction fields holding a register and
3147   an offset, the equivalent of the relocation.
3148 ENUM
3149   BFD_RELOC_MMIX_LOCAL
3150 ENUMDOC
3151   This relocation is an assertion that the expression is not allocated as
3152   a global register.  It does not modify contents.
3153
3154 ENUM
3155   BFD_RELOC_AVR_7_PCREL
3156 ENUMDOC
3157   This is a 16 bit reloc for the AVR that stores 8 bit pc relative
3158   short offset into 7 bits.
3159 ENUM
3160   BFD_RELOC_AVR_13_PCREL
3161 ENUMDOC
3162   This is a 16 bit reloc for the AVR that stores 13 bit pc relative
3163   short offset into 12 bits.
3164 ENUM
3165   BFD_RELOC_AVR_16_PM
3166 ENUMDOC
3167   This is a 16 bit reloc for the AVR that stores 17 bit value (usually
3168   program memory address) into 16 bits.
3169 ENUM
3170   BFD_RELOC_AVR_LO8_LDI
3171 ENUMDOC
3172   This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3173   data memory address) into 8 bit immediate value of LDI insn.
3174 ENUM
3175   BFD_RELOC_AVR_HI8_LDI
3176 ENUMDOC
3177   This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3178   of data memory address) into 8 bit immediate value of LDI insn.
3179 ENUM
3180   BFD_RELOC_AVR_HH8_LDI
3181 ENUMDOC
3182   This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3183   of program memory address) into 8 bit immediate value of LDI insn.
3184 ENUM
3185   BFD_RELOC_AVR_LO8_LDI_NEG
3186 ENUMDOC
3187   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3188   (usually data memory address) into 8 bit immediate value of SUBI insn.
3189 ENUM
3190   BFD_RELOC_AVR_HI8_LDI_NEG
3191 ENUMDOC
3192   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3193   (high 8 bit of data memory address) into 8 bit immediate value of
3194   SUBI insn.
3195 ENUM
3196   BFD_RELOC_AVR_HH8_LDI_NEG
3197 ENUMDOC
3198   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3199   (most high 8 bit of program memory address) into 8 bit immediate value
3200   of LDI or SUBI insn.
3201 ENUM
3202   BFD_RELOC_AVR_LO8_LDI_PM
3203 ENUMDOC
3204   This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3205   command address) into 8 bit immediate value of LDI insn.
3206 ENUM
3207   BFD_RELOC_AVR_HI8_LDI_PM
3208 ENUMDOC
3209   This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3210   of command address) into 8 bit immediate value of LDI insn.
3211 ENUM
3212   BFD_RELOC_AVR_HH8_LDI_PM
3213 ENUMDOC
3214   This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3215   of command address) into 8 bit immediate value of LDI insn.
3216 ENUM
3217   BFD_RELOC_AVR_LO8_LDI_PM_NEG
3218 ENUMDOC
3219   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3220   (usually command address) into 8 bit immediate value of SUBI insn.
3221 ENUM
3222   BFD_RELOC_AVR_HI8_LDI_PM_NEG
3223 ENUMDOC
3224   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3225   (high 8 bit of 16 bit command address) into 8 bit immediate value
3226   of SUBI insn.
3227 ENUM
3228   BFD_RELOC_AVR_HH8_LDI_PM_NEG
3229 ENUMDOC
3230   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3231   (high 6 bit of 22 bit command address) into 8 bit immediate
3232   value of SUBI insn.
3233 ENUM
3234   BFD_RELOC_AVR_CALL
3235 ENUMDOC
3236   This is a 32 bit reloc for the AVR that stores 23 bit value
3237   into 22 bits.
3238
3239 ENUM
3240   BFD_RELOC_390_12
3241 ENUMDOC
3242    Direct 12 bit.
3243 ENUM
3244   BFD_RELOC_390_GOT12
3245 ENUMDOC
3246   12 bit GOT offset.
3247 ENUM
3248   BFD_RELOC_390_PLT32
3249 ENUMDOC
3250   32 bit PC relative PLT address.
3251 ENUM
3252   BFD_RELOC_390_COPY
3253 ENUMDOC
3254   Copy symbol at runtime.
3255 ENUM
3256   BFD_RELOC_390_GLOB_DAT
3257 ENUMDOC
3258   Create GOT entry.
3259 ENUM
3260   BFD_RELOC_390_JMP_SLOT
3261 ENUMDOC
3262   Create PLT entry.
3263 ENUM
3264   BFD_RELOC_390_RELATIVE
3265 ENUMDOC
3266   Adjust by program base.
3267 ENUM
3268   BFD_RELOC_390_GOTPC
3269 ENUMDOC
3270   32 bit PC relative offset to GOT.
3271 ENUM
3272   BFD_RELOC_390_GOT16
3273 ENUMDOC
3274   16 bit GOT offset.
3275 ENUM
3276   BFD_RELOC_390_PC16DBL
3277 ENUMDOC
3278   PC relative 16 bit shifted by 1.
3279 ENUM
3280   BFD_RELOC_390_PLT16DBL
3281 ENUMDOC
3282   16 bit PC rel. PLT shifted by 1.
3283 ENUM
3284   BFD_RELOC_390_PC32DBL
3285 ENUMDOC
3286   PC relative 32 bit shifted by 1.
3287 ENUM
3288   BFD_RELOC_390_PLT32DBL
3289 ENUMDOC
3290   32 bit PC rel. PLT shifted by 1.
3291 ENUM
3292   BFD_RELOC_390_GOTPCDBL
3293 ENUMDOC
3294   32 bit PC rel. GOT shifted by 1.
3295 ENUM
3296   BFD_RELOC_390_GOT64
3297 ENUMDOC
3298   64 bit GOT offset.
3299 ENUM
3300   BFD_RELOC_390_PLT64
3301 ENUMDOC
3302   64 bit PC relative PLT address.
3303 ENUM
3304   BFD_RELOC_390_GOTENT
3305 ENUMDOC
3306   32 bit rel. offset to GOT entry.
3307 ENUM
3308   BFD_RELOC_390_GOTOFF64
3309 ENUMDOC
3310   64 bit offset to GOT.
3311 ENUM
3312   BFD_RELOC_390_GOTPLT12
3313 ENUMDOC
3314   12-bit offset to symbol-entry within GOT, with PLT handling.
3315 ENUM
3316   BFD_RELOC_390_GOTPLT16
3317 ENUMDOC
3318   16-bit offset to symbol-entry within GOT, with PLT handling.
3319 ENUM
3320   BFD_RELOC_390_GOTPLT32
3321 ENUMDOC
3322   32-bit offset to symbol-entry within GOT, with PLT handling.
3323 ENUM
3324   BFD_RELOC_390_GOTPLT64
3325 ENUMDOC
3326   64-bit offset to symbol-entry within GOT, with PLT handling.
3327 ENUM
3328   BFD_RELOC_390_GOTPLTENT
3329 ENUMDOC
3330   32-bit rel. offset to symbol-entry within GOT, with PLT handling.
3331 ENUM
3332   BFD_RELOC_390_PLTOFF16
3333 ENUMDOC
3334   16-bit rel. offset from the GOT to a PLT entry.
3335 ENUM
3336   BFD_RELOC_390_PLTOFF32
3337 ENUMDOC
3338   32-bit rel. offset from the GOT to a PLT entry.
3339 ENUM
3340   BFD_RELOC_390_PLTOFF64
3341 ENUMDOC
3342   64-bit rel. offset from the GOT to a PLT entry.
3343
3344 ENUM
3345   BFD_RELOC_390_TLS_LOAD
3346 ENUMX
3347   BFD_RELOC_390_TLS_GDCALL
3348 ENUMX
3349   BFD_RELOC_390_TLS_LDCALL
3350 ENUMX
3351   BFD_RELOC_390_TLS_GD32
3352 ENUMX
3353   BFD_RELOC_390_TLS_GD64
3354 ENUMX
3355   BFD_RELOC_390_TLS_GOTIE12
3356 ENUMX
3357   BFD_RELOC_390_TLS_GOTIE32
3358 ENUMX
3359   BFD_RELOC_390_TLS_GOTIE64
3360 ENUMX
3361   BFD_RELOC_390_TLS_LDM32
3362 ENUMX
3363   BFD_RELOC_390_TLS_LDM64
3364 ENUMX
3365   BFD_RELOC_390_TLS_IE32
3366 ENUMX
3367   BFD_RELOC_390_TLS_IE64
3368 ENUMX
3369   BFD_RELOC_390_TLS_IEENT
3370 ENUMX
3371   BFD_RELOC_390_TLS_LE32
3372 ENUMX
3373   BFD_RELOC_390_TLS_LE64
3374 ENUMX
3375   BFD_RELOC_390_TLS_LDO32
3376 ENUMX
3377   BFD_RELOC_390_TLS_LDO64
3378 ENUMX
3379   BFD_RELOC_390_TLS_DTPMOD
3380 ENUMX
3381   BFD_RELOC_390_TLS_DTPOFF
3382 ENUMX
3383   BFD_RELOC_390_TLS_TPOFF
3384 ENUMDOC
3385   s390 tls relocations.
3386
3387 ENUM
3388   BFD_RELOC_IP2K_FR9
3389 ENUMDOC
3390   Scenix IP2K - 9-bit register number / data address
3391 ENUM
3392   BFD_RELOC_IP2K_BANK
3393 ENUMDOC
3394   Scenix IP2K - 4-bit register/data bank number
3395 ENUM
3396   BFD_RELOC_IP2K_ADDR16CJP
3397 ENUMDOC
3398   Scenix IP2K - low 13 bits of instruction word address
3399 ENUM
3400   BFD_RELOC_IP2K_PAGE3
3401 ENUMDOC
3402   Scenix IP2K - high 3 bits of instruction word address
3403 ENUM
3404   BFD_RELOC_IP2K_LO8DATA
3405 ENUMX
3406   BFD_RELOC_IP2K_HI8DATA
3407 ENUMX
3408   BFD_RELOC_IP2K_EX8DATA
3409 ENUMDOC
3410   Scenix IP2K - ext/low/high 8 bits of data address
3411 ENUM
3412   BFD_RELOC_IP2K_LO8INSN
3413 ENUMX
3414   BFD_RELOC_IP2K_HI8INSN
3415 ENUMDOC
3416   Scenix IP2K - low/high 8 bits of instruction word address
3417 ENUM
3418   BFD_RELOC_IP2K_PC_SKIP
3419 ENUMDOC
3420   Scenix IP2K - even/odd PC modifier to modify snb pcl.0
3421 ENUM
3422   BFD_RELOC_IP2K_TEXT
3423 ENUMDOC
3424   Scenix IP2K - 16 bit word address in text section.
3425 ENUM
3426   BFD_RELOC_IP2K_FR_OFFSET
3427 ENUMDOC
3428   Scenix IP2K - 7-bit sp or dp offset
3429 ENUM
3430   BFD_RELOC_VPE4KMATH_DATA
3431 ENUMX
3432   BFD_RELOC_VPE4KMATH_INSN
3433 ENUMDOC
3434   Scenix VPE4K coprocessor - data/insn-space addressing
3435
3436 ENUM
3437   BFD_RELOC_VTABLE_INHERIT
3438 ENUMX
3439   BFD_RELOC_VTABLE_ENTRY
3440 ENUMDOC
3441   These two relocations are used by the linker to determine which of
3442   the entries in a C++ virtual function table are actually used.  When
3443   the --gc-sections option is given, the linker will zero out the entries
3444   that are not used, so that the code for those functions need not be
3445   included in the output.
3446
3447   VTABLE_INHERIT is a zero-space relocation used to describe to the
3448   linker the inheritence tree of a C++ virtual function table.  The
3449   relocation's symbol should be the parent class' vtable, and the
3450   relocation should be located at the child vtable.
3451
3452   VTABLE_ENTRY is a zero-space relocation that describes the use of a
3453   virtual function table entry.  The reloc's symbol should refer to the
3454   table of the class mentioned in the code.  Off of that base, an offset
3455   describes the entry that is being used.  For Rela hosts, this offset
3456   is stored in the reloc's addend.  For Rel hosts, we are forced to put
3457   this offset in the reloc's section offset.
3458
3459 ENUM
3460   BFD_RELOC_IA64_IMM14
3461 ENUMX
3462   BFD_RELOC_IA64_IMM22
3463 ENUMX
3464   BFD_RELOC_IA64_IMM64
3465 ENUMX
3466   BFD_RELOC_IA64_DIR32MSB
3467 ENUMX
3468   BFD_RELOC_IA64_DIR32LSB
3469 ENUMX
3470   BFD_RELOC_IA64_DIR64MSB
3471 ENUMX
3472   BFD_RELOC_IA64_DIR64LSB
3473 ENUMX
3474   BFD_RELOC_IA64_GPREL22
3475 ENUMX
3476   BFD_RELOC_IA64_GPREL64I
3477 ENUMX
3478   BFD_RELOC_IA64_GPREL32MSB
3479 ENUMX
3480   BFD_RELOC_IA64_GPREL32LSB
3481 ENUMX
3482   BFD_RELOC_IA64_GPREL64MSB
3483 ENUMX
3484   BFD_RELOC_IA64_GPREL64LSB
3485 ENUMX
3486   BFD_RELOC_IA64_LTOFF22
3487 ENUMX
3488   BFD_RELOC_IA64_LTOFF64I
3489 ENUMX
3490   BFD_RELOC_IA64_PLTOFF22
3491 ENUMX
3492   BFD_RELOC_IA64_PLTOFF64I
3493 ENUMX
3494   BFD_RELOC_IA64_PLTOFF64MSB
3495 ENUMX
3496   BFD_RELOC_IA64_PLTOFF64LSB
3497 ENUMX
3498   BFD_RELOC_IA64_FPTR64I
3499 ENUMX
3500   BFD_RELOC_IA64_FPTR32MSB
3501 ENUMX
3502   BFD_RELOC_IA64_FPTR32LSB
3503 ENUMX
3504   BFD_RELOC_IA64_FPTR64MSB
3505 ENUMX
3506   BFD_RELOC_IA64_FPTR64LSB
3507 ENUMX
3508   BFD_RELOC_IA64_PCREL21B
3509 ENUMX
3510   BFD_RELOC_IA64_PCREL21BI
3511 ENUMX
3512   BFD_RELOC_IA64_PCREL21M
3513 ENUMX
3514   BFD_RELOC_IA64_PCREL21F
3515 ENUMX
3516   BFD_RELOC_IA64_PCREL22
3517 ENUMX
3518   BFD_RELOC_IA64_PCREL60B
3519 ENUMX
3520   BFD_RELOC_IA64_PCREL64I
3521 ENUMX
3522   BFD_RELOC_IA64_PCREL32MSB
3523 ENUMX
3524   BFD_RELOC_IA64_PCREL32LSB
3525 ENUMX
3526   BFD_RELOC_IA64_PCREL64MSB
3527 ENUMX
3528   BFD_RELOC_IA64_PCREL64LSB
3529 ENUMX
3530   BFD_RELOC_IA64_LTOFF_FPTR22
3531 ENUMX
3532   BFD_RELOC_IA64_LTOFF_FPTR64I
3533 ENUMX
3534   BFD_RELOC_IA64_LTOFF_FPTR32MSB
3535 ENUMX
3536   BFD_RELOC_IA64_LTOFF_FPTR32LSB
3537 ENUMX
3538   BFD_RELOC_IA64_LTOFF_FPTR64MSB
3539 ENUMX
3540   BFD_RELOC_IA64_LTOFF_FPTR64LSB
3541 ENUMX
3542   BFD_RELOC_IA64_SEGREL32MSB
3543 ENUMX
3544   BFD_RELOC_IA64_SEGREL32LSB
3545 ENUMX
3546   BFD_RELOC_IA64_SEGREL64MSB
3547 ENUMX
3548   BFD_RELOC_IA64_SEGREL64LSB
3549 ENUMX
3550   BFD_RELOC_IA64_SECREL32MSB
3551 ENUMX
3552   BFD_RELOC_IA64_SECREL32LSB
3553 ENUMX
3554   BFD_RELOC_IA64_SECREL64MSB
3555 ENUMX
3556   BFD_RELOC_IA64_SECREL64LSB
3557 ENUMX
3558   BFD_RELOC_IA64_REL32MSB
3559 ENUMX
3560   BFD_RELOC_IA64_REL32LSB
3561 ENUMX
3562   BFD_RELOC_IA64_REL64MSB
3563 ENUMX
3564   BFD_RELOC_IA64_REL64LSB
3565 ENUMX
3566   BFD_RELOC_IA64_LTV32MSB
3567 ENUMX
3568   BFD_RELOC_IA64_LTV32LSB
3569 ENUMX
3570   BFD_RELOC_IA64_LTV64MSB
3571 ENUMX
3572   BFD_RELOC_IA64_LTV64LSB
3573 ENUMX
3574   BFD_RELOC_IA64_IPLTMSB
3575 ENUMX
3576   BFD_RELOC_IA64_IPLTLSB
3577 ENUMX
3578   BFD_RELOC_IA64_COPY
3579 ENUMX
3580   BFD_RELOC_IA64_LTOFF22X
3581 ENUMX
3582   BFD_RELOC_IA64_LDXMOV
3583 ENUMX
3584   BFD_RELOC_IA64_TPREL14
3585 ENUMX
3586   BFD_RELOC_IA64_TPREL22
3587 ENUMX
3588   BFD_RELOC_IA64_TPREL64I
3589 ENUMX
3590   BFD_RELOC_IA64_TPREL64MSB
3591 ENUMX
3592   BFD_RELOC_IA64_TPREL64LSB
3593 ENUMX
3594   BFD_RELOC_IA64_LTOFF_TPREL22
3595 ENUMX
3596   BFD_RELOC_IA64_DTPMOD64MSB
3597 ENUMX
3598   BFD_RELOC_IA64_DTPMOD64LSB
3599 ENUMX
3600   BFD_RELOC_IA64_LTOFF_DTPMOD22
3601 ENUMX
3602   BFD_RELOC_IA64_DTPREL14
3603 ENUMX
3604   BFD_RELOC_IA64_DTPREL22
3605 ENUMX
3606   BFD_RELOC_IA64_DTPREL64I
3607 ENUMX
3608   BFD_RELOC_IA64_DTPREL32MSB
3609 ENUMX
3610   BFD_RELOC_IA64_DTPREL32LSB
3611 ENUMX
3612   BFD_RELOC_IA64_DTPREL64MSB
3613 ENUMX
3614   BFD_RELOC_IA64_DTPREL64LSB
3615 ENUMX
3616   BFD_RELOC_IA64_LTOFF_DTPREL22
3617 ENUMDOC
3618   Intel IA64 Relocations.
3619
3620 ENUM
3621   BFD_RELOC_M68HC11_HI8
3622 ENUMDOC
3623   Motorola 68HC11 reloc.
3624   This is the 8 bit high part of an absolute address.
3625 ENUM
3626   BFD_RELOC_M68HC11_LO8
3627 ENUMDOC
3628   Motorola 68HC11 reloc.
3629   This is the 8 bit low part of an absolute address.
3630 ENUM
3631   BFD_RELOC_M68HC11_3B
3632 ENUMDOC
3633   Motorola 68HC11 reloc.
3634   This is the 3 bit of a value.
3635 ENUM
3636   BFD_RELOC_M68HC11_RL_JUMP
3637 ENUMDOC
3638   Motorola 68HC11 reloc.
3639   This reloc marks the beginning of a jump/call instruction.
3640   It is used for linker relaxation to correctly identify beginning
3641   of instruction and change some branchs to use PC-relative
3642   addressing mode.
3643 ENUM
3644   BFD_RELOC_M68HC11_RL_GROUP
3645 ENUMDOC
3646   Motorola 68HC11 reloc.
3647   This reloc marks a group of several instructions that gcc generates
3648   and for which the linker relaxation pass can modify and/or remove
3649   some of them.
3650 ENUM
3651   BFD_RELOC_M68HC11_LO16
3652 ENUMDOC
3653   Motorola 68HC11 reloc.
3654   This is the 16-bit lower part of an address.  It is used for 'call'
3655   instruction to specify the symbol address without any special
3656   transformation (due to memory bank window).
3657 ENUM
3658   BFD_RELOC_M68HC11_PAGE
3659 ENUMDOC
3660   Motorola 68HC11 reloc.
3661   This is a 8-bit reloc that specifies the page number of an address.
3662   It is used by 'call' instruction to specify the page number of
3663   the symbol.
3664 ENUM
3665   BFD_RELOC_M68HC11_24
3666 ENUMDOC
3667   Motorola 68HC11 reloc.
3668   This is a 24-bit reloc that represents the address with a 16-bit
3669   value and a 8-bit page number.  The symbol address is transformed
3670   to follow the 16K memory bank of 68HC12 (seen as mapped in the window).
3671
3672 ENUM
3673   BFD_RELOC_CRIS_BDISP8
3674 ENUMX
3675   BFD_RELOC_CRIS_UNSIGNED_5
3676 ENUMX
3677   BFD_RELOC_CRIS_SIGNED_6
3678 ENUMX
3679   BFD_RELOC_CRIS_UNSIGNED_6
3680 ENUMX
3681   BFD_RELOC_CRIS_UNSIGNED_4
3682 ENUMDOC
3683   These relocs are only used within the CRIS assembler.  They are not
3684   (at present) written to any object files.
3685 ENUM
3686   BFD_RELOC_CRIS_COPY
3687 ENUMX
3688   BFD_RELOC_CRIS_GLOB_DAT
3689 ENUMX
3690   BFD_RELOC_CRIS_JUMP_SLOT
3691 ENUMX
3692   BFD_RELOC_CRIS_RELATIVE
3693 ENUMDOC
3694   Relocs used in ELF shared libraries for CRIS.
3695 ENUM
3696   BFD_RELOC_CRIS_32_GOT
3697 ENUMDOC
3698   32-bit offset to symbol-entry within GOT.
3699 ENUM
3700   BFD_RELOC_CRIS_16_GOT
3701 ENUMDOC
3702   16-bit offset to symbol-entry within GOT.
3703 ENUM
3704   BFD_RELOC_CRIS_32_GOTPLT
3705 ENUMDOC
3706   32-bit offset to symbol-entry within GOT, with PLT handling.
3707 ENUM
3708   BFD_RELOC_CRIS_16_GOTPLT
3709 ENUMDOC
3710   16-bit offset to symbol-entry within GOT, with PLT handling.
3711 ENUM
3712   BFD_RELOC_CRIS_32_GOTREL
3713 ENUMDOC
3714   32-bit offset to symbol, relative to GOT.
3715 ENUM
3716   BFD_RELOC_CRIS_32_PLT_GOTREL
3717 ENUMDOC
3718   32-bit offset to symbol with PLT entry, relative to GOT.
3719 ENUM
3720   BFD_RELOC_CRIS_32_PLT_PCREL
3721 ENUMDOC
3722   32-bit offset to symbol with PLT entry, relative to this relocation.
3723
3724 ENUM
3725   BFD_RELOC_860_COPY
3726 ENUMX
3727   BFD_RELOC_860_GLOB_DAT
3728 ENUMX
3729   BFD_RELOC_860_JUMP_SLOT
3730 ENUMX
3731   BFD_RELOC_860_RELATIVE
3732 ENUMX
3733   BFD_RELOC_860_PC26
3734 ENUMX
3735   BFD_RELOC_860_PLT26
3736 ENUMX
3737   BFD_RELOC_860_PC16
3738 ENUMX
3739   BFD_RELOC_860_LOW0
3740 ENUMX
3741   BFD_RELOC_860_SPLIT0
3742 ENUMX
3743   BFD_RELOC_860_LOW1
3744 ENUMX
3745   BFD_RELOC_860_SPLIT1
3746 ENUMX
3747   BFD_RELOC_860_LOW2
3748 ENUMX
3749   BFD_RELOC_860_SPLIT2
3750 ENUMX
3751   BFD_RELOC_860_LOW3
3752 ENUMX
3753   BFD_RELOC_860_LOGOT0
3754 ENUMX
3755   BFD_RELOC_860_SPGOT0
3756 ENUMX
3757   BFD_RELOC_860_LOGOT1
3758 ENUMX
3759   BFD_RELOC_860_SPGOT1
3760 ENUMX
3761   BFD_RELOC_860_LOGOTOFF0
3762 ENUMX
3763   BFD_RELOC_860_SPGOTOFF0
3764 ENUMX
3765   BFD_RELOC_860_LOGOTOFF1
3766 ENUMX
3767   BFD_RELOC_860_SPGOTOFF1
3768 ENUMX
3769   BFD_RELOC_860_LOGOTOFF2
3770 ENUMX
3771   BFD_RELOC_860_LOGOTOFF3
3772 ENUMX
3773   BFD_RELOC_860_LOPC
3774 ENUMX
3775   BFD_RELOC_860_HIGHADJ
3776 ENUMX
3777   BFD_RELOC_860_HAGOT
3778 ENUMX
3779   BFD_RELOC_860_HAGOTOFF
3780 ENUMX
3781   BFD_RELOC_860_HAPC
3782 ENUMX
3783   BFD_RELOC_860_HIGH
3784 ENUMX
3785   BFD_RELOC_860_HIGOT
3786 ENUMX
3787   BFD_RELOC_860_HIGOTOFF
3788 ENUMDOC
3789   Intel i860 Relocations.
3790
3791 ENUM
3792   BFD_RELOC_OPENRISC_ABS_26
3793 ENUMX
3794   BFD_RELOC_OPENRISC_REL_26
3795 ENUMDOC
3796   OpenRISC Relocations.
3797
3798 ENUM
3799   BFD_RELOC_H8_DIR16A8
3800 ENUMX
3801   BFD_RELOC_H8_DIR16R8
3802 ENUMX
3803   BFD_RELOC_H8_DIR24A8
3804 ENUMX
3805   BFD_RELOC_H8_DIR24R8
3806 ENUMX
3807   BFD_RELOC_H8_DIR32A16
3808 ENUMDOC
3809   H8 elf Relocations.
3810
3811 ENUM
3812   BFD_RELOC_XSTORMY16_REL_12
3813 ENUMX
3814   BFD_RELOC_XSTORMY16_12
3815 ENUMX
3816   BFD_RELOC_XSTORMY16_24
3817 ENUMX
3818   BFD_RELOC_XSTORMY16_FPTR16
3819 ENUMDOC
3820   Sony Xstormy16 Relocations.
3821
3822 ENUM
3823   BFD_RELOC_VAX_GLOB_DAT
3824 ENUMX
3825   BFD_RELOC_VAX_JMP_SLOT
3826 ENUMX
3827   BFD_RELOC_VAX_RELATIVE
3828 ENUMDOC
3829   Relocations used by VAX ELF.
3830
3831 ENUM
3832   BFD_RELOC_MSP430_10_PCREL
3833 ENUMX
3834   BFD_RELOC_MSP430_16_PCREL
3835 ENUMX
3836   BFD_RELOC_MSP430_16
3837 ENUMX
3838   BFD_RELOC_MSP430_16_PCREL_BYTE
3839 ENUMX
3840   BFD_RELOC_MSP430_16_BYTE
3841 ENUMDOC
3842   msp430 specific relocation codes
3843
3844 ENUM
3845   BFD_RELOC_IQ2000_OFFSET_16
3846 ENUMX
3847   BFD_RELOC_IQ2000_OFFSET_21
3848 ENUMX
3849   BFD_RELOC_IQ2000_UHI16
3850 ENUMDOC
3851   IQ2000 Relocations.
3852
3853 ENUM
3854   BFD_RELOC_XTENSA_RTLD
3855 ENUMDOC
3856   Special Xtensa relocation used only by PLT entries in ELF shared
3857   objects to indicate that the runtime linker should set the value
3858   to one of its own internal functions or data structures.
3859 ENUM
3860   BFD_RELOC_XTENSA_GLOB_DAT
3861 ENUMX
3862   BFD_RELOC_XTENSA_JMP_SLOT
3863 ENUMX
3864   BFD_RELOC_XTENSA_RELATIVE
3865 ENUMDOC
3866   Xtensa relocations for ELF shared objects.
3867 ENUM
3868   BFD_RELOC_XTENSA_PLT
3869 ENUMDOC
3870   Xtensa relocation used in ELF object files for symbols that may require
3871   PLT entries.  Otherwise, this is just a generic 32-bit relocation.
3872 ENUM
3873   BFD_RELOC_XTENSA_OP0
3874 ENUMX
3875   BFD_RELOC_XTENSA_OP1
3876 ENUMX
3877   BFD_RELOC_XTENSA_OP2
3878 ENUMDOC
3879   Generic Xtensa relocations.  Only the operand number is encoded
3880   in the relocation.  The details are determined by extracting the
3881   instruction opcode.
3882 ENUM
3883   BFD_RELOC_XTENSA_ASM_EXPAND
3884 ENUMDOC
3885   Xtensa relocation to mark that the assembler expanded the
3886   instructions from an original target.  The expansion size is
3887   encoded in the reloc size.
3888 ENUM
3889   BFD_RELOC_XTENSA_ASM_SIMPLIFY
3890 ENUMDOC
3891   Xtensa relocation to mark that the linker should simplify
3892   assembler-expanded instructions.  This is commonly used
3893   internally by the linker after analysis of a
3894   BFD_RELOC_XTENSA_ASM_EXPAND.
3895
3896 ENDSENUM
3897   BFD_RELOC_UNUSED
3898 CODE_FRAGMENT
3899 .
3900 .typedef enum bfd_reloc_code_real bfd_reloc_code_real_type;
3901 */
3902
3903 /*
3904 FUNCTION
3905         bfd_reloc_type_lookup
3906
3907 SYNOPSIS
3908         reloc_howto_type *
3909         bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code);
3910
3911 DESCRIPTION
3912         Return a pointer to a howto structure which, when
3913         invoked, will perform the relocation @var{code} on data from the
3914         architecture noted.
3915
3916 */
3917
3918 reloc_howto_type *
3919 bfd_reloc_type_lookup (abfd, code)
3920      bfd *abfd;
3921      bfd_reloc_code_real_type code;
3922 {
3923   return BFD_SEND (abfd, reloc_type_lookup, (abfd, code));
3924 }
3925
3926 static reloc_howto_type bfd_howto_32 =
3927 HOWTO (0, 00, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "VRT32", FALSE, 0xffffffff, 0xffffffff, TRUE);
3928
3929 /*
3930 INTERNAL_FUNCTION
3931         bfd_default_reloc_type_lookup
3932
3933 SYNOPSIS
3934         reloc_howto_type *bfd_default_reloc_type_lookup
3935         (bfd *abfd, bfd_reloc_code_real_type  code);
3936
3937 DESCRIPTION
3938         Provides a default relocation lookup routine for any architecture.
3939
3940 */
3941
3942 reloc_howto_type *
3943 bfd_default_reloc_type_lookup (abfd, code)
3944      bfd *abfd;
3945      bfd_reloc_code_real_type code;
3946 {
3947   switch (code)
3948     {
3949     case BFD_RELOC_CTOR:
3950       /* The type of reloc used in a ctor, which will be as wide as the
3951          address - so either a 64, 32, or 16 bitter.  */
3952       switch (bfd_get_arch_info (abfd)->bits_per_address)
3953         {
3954         case 64:
3955           BFD_FAIL ();
3956         case 32:
3957           return &bfd_howto_32;
3958         case 16:
3959           BFD_FAIL ();
3960         default:
3961           BFD_FAIL ();
3962         }
3963     default:
3964       BFD_FAIL ();
3965     }
3966   return (reloc_howto_type *) NULL;
3967 }
3968
3969 /*
3970 FUNCTION
3971         bfd_get_reloc_code_name
3972
3973 SYNOPSIS
3974         const char *bfd_get_reloc_code_name (bfd_reloc_code_real_type code);
3975
3976 DESCRIPTION
3977         Provides a printable name for the supplied relocation code.
3978         Useful mainly for printing error messages.
3979 */
3980
3981 const char *
3982 bfd_get_reloc_code_name (code)
3983      bfd_reloc_code_real_type code;
3984 {
3985   if ((int) code > (int) BFD_RELOC_UNUSED)
3986     return 0;
3987   return bfd_reloc_code_real_names[(int)code];
3988 }
3989
3990 /*
3991 INTERNAL_FUNCTION
3992         bfd_generic_relax_section
3993
3994 SYNOPSIS
3995         bfd_boolean bfd_generic_relax_section
3996          (bfd *abfd,
3997           asection *section,
3998           struct bfd_link_info *,
3999           bfd_boolean *);
4000
4001 DESCRIPTION
4002         Provides default handling for relaxing for back ends which
4003         don't do relaxing -- i.e., does nothing.
4004 */
4005
4006 bfd_boolean
4007 bfd_generic_relax_section (abfd, section, link_info, again)
4008      bfd *abfd ATTRIBUTE_UNUSED;
4009      asection *section ATTRIBUTE_UNUSED;
4010      struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
4011      bfd_boolean *again;
4012 {
4013   *again = FALSE;
4014   return TRUE;
4015 }
4016
4017 /*
4018 INTERNAL_FUNCTION
4019         bfd_generic_gc_sections
4020
4021 SYNOPSIS
4022         bfd_boolean bfd_generic_gc_sections
4023          (bfd *, struct bfd_link_info *);
4024
4025 DESCRIPTION
4026         Provides default handling for relaxing for back ends which
4027         don't do section gc -- i.e., does nothing.
4028 */
4029
4030 bfd_boolean
4031 bfd_generic_gc_sections (abfd, link_info)
4032      bfd *abfd ATTRIBUTE_UNUSED;
4033      struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
4034 {
4035   return TRUE;
4036 }
4037
4038 /*
4039 INTERNAL_FUNCTION
4040         bfd_generic_merge_sections
4041
4042 SYNOPSIS
4043         bfd_boolean bfd_generic_merge_sections
4044          (bfd *, struct bfd_link_info *);
4045
4046 DESCRIPTION
4047         Provides default handling for SEC_MERGE section merging for back ends
4048         which don't have SEC_MERGE support -- i.e., does nothing.
4049 */
4050
4051 bfd_boolean
4052 bfd_generic_merge_sections (abfd, link_info)
4053      bfd *abfd ATTRIBUTE_UNUSED;
4054      struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
4055 {
4056   return TRUE;
4057 }
4058
4059 /*
4060 INTERNAL_FUNCTION
4061         bfd_generic_get_relocated_section_contents
4062
4063 SYNOPSIS
4064         bfd_byte *
4065            bfd_generic_get_relocated_section_contents (bfd *abfd,
4066              struct bfd_link_info *link_info,
4067              struct bfd_link_order *link_order,
4068              bfd_byte *data,
4069              bfd_boolean relocateable,
4070              asymbol **symbols);
4071
4072 DESCRIPTION
4073         Provides default handling of relocation effort for back ends
4074         which can't be bothered to do it efficiently.
4075
4076 */
4077
4078 bfd_byte *
4079 bfd_generic_get_relocated_section_contents (abfd, link_info, link_order, data,
4080                                             relocateable, symbols)
4081      bfd *abfd;
4082      struct bfd_link_info *link_info;
4083      struct bfd_link_order *link_order;
4084      bfd_byte *data;
4085      bfd_boolean relocateable;
4086      asymbol **symbols;
4087 {
4088   /* Get enough memory to hold the stuff.  */
4089   bfd *input_bfd = link_order->u.indirect.section->owner;
4090   asection *input_section = link_order->u.indirect.section;
4091
4092   long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
4093   arelent **reloc_vector = NULL;
4094   long reloc_count;
4095
4096   if (reloc_size < 0)
4097     goto error_return;
4098
4099   reloc_vector = (arelent **) bfd_malloc ((bfd_size_type) reloc_size);
4100   if (reloc_vector == NULL && reloc_size != 0)
4101     goto error_return;
4102
4103   /* Read in the section.  */
4104   if (!bfd_get_section_contents (input_bfd,
4105                                  input_section,
4106                                  (PTR) data,
4107                                  (bfd_vma) 0,
4108                                  input_section->_raw_size))
4109     goto error_return;
4110
4111   /* We're not relaxing the section, so just copy the size info.  */
4112   input_section->_cooked_size = input_section->_raw_size;
4113   input_section->reloc_done = TRUE;
4114
4115   reloc_count = bfd_canonicalize_reloc (input_bfd,
4116                                         input_section,
4117                                         reloc_vector,
4118                                         symbols);
4119   if (reloc_count < 0)
4120     goto error_return;
4121
4122   if (reloc_count > 0)
4123     {
4124       arelent **parent;
4125       for (parent = reloc_vector; *parent != (arelent *) NULL;
4126            parent++)
4127         {
4128           char *error_message = (char *) NULL;
4129           bfd_reloc_status_type r =
4130             bfd_perform_relocation (input_bfd,
4131                                     *parent,
4132                                     (PTR) data,
4133                                     input_section,
4134                                     relocateable ? abfd : (bfd *) NULL,
4135                                     &error_message);
4136
4137           if (relocateable)
4138             {
4139               asection *os = input_section->output_section;
4140
4141               /* A partial link, so keep the relocs.  */
4142               os->orelocation[os->reloc_count] = *parent;
4143               os->reloc_count++;
4144             }
4145
4146           if (r != bfd_reloc_ok)
4147             {
4148               switch (r)
4149                 {
4150                 case bfd_reloc_undefined:
4151                   if (!((*link_info->callbacks->undefined_symbol)
4152                         (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4153                          input_bfd, input_section, (*parent)->address,
4154                          TRUE)))
4155                     goto error_return;
4156                   break;
4157                 case bfd_reloc_dangerous:
4158                   BFD_ASSERT (error_message != (char *) NULL);
4159                   if (!((*link_info->callbacks->reloc_dangerous)
4160                         (link_info, error_message, input_bfd, input_section,
4161                          (*parent)->address)))
4162                     goto error_return;
4163                   break;
4164                 case bfd_reloc_overflow:
4165                   if (!((*link_info->callbacks->reloc_overflow)
4166                         (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4167                          (*parent)->howto->name, (*parent)->addend,
4168                          input_bfd, input_section, (*parent)->address)))
4169                     goto error_return;
4170                   break;
4171                 case bfd_reloc_outofrange:
4172                 default:
4173                   abort ();
4174                   break;
4175                 }
4176
4177             }
4178         }
4179     }
4180   if (reloc_vector != NULL)
4181     free (reloc_vector);
4182   return data;
4183
4184 error_return:
4185   if (reloc_vector != NULL)
4186     free (reloc_vector);
4187   return NULL;
4188 }