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 the pointer
 126         into the table returned by the back end's
 127         <<canonicalize_symtab>> action. @xref{Symbols}. The symbol is
 128         referenced through a pointer to a pointer so that tools like
 129         the linker can fix up all the symbols of the same name by
 130         modifying only one pointer. The relocation routine looks in
 131         the symbol and uses the base of the section the symbol is
 132         attached to and the value of the symbol as the initial
 133         relocation offset. If the symbol pointer is zero, then the
 134         section provided is looked up.
 135
 136         o <<address>>
 137
 138         The <<address>> field gives the offset in bytes from the base of
 139         the section data which owns the relocation record to the first
 140         byte of relocatable information. The actual data relocated
 141         will be relative to this point; for example, a relocation
 142         type which modifies the bottom two bytes of a four byte word
 143         would not touch the first byte pointed to in a big endian
 144         world.
 145
 146         o <<addend>>
 147
 148         The <<addend>> is a value provided by the back end to be added (!)
 149         to the relocation offset. Its interpretation is dependent upon
 150         the howto. For example, on the 68k the code:
 151
 152 |        char foo[];
 153 |        main()
 154 |                {
 155 |                return foo[0x12345678];
 156 |                }
 157
 158         Could be compiled into:
 159
 160 |        linkw fp,#-4
 161 |        moveb @@#12345678,d0
 162 |        extbl d0
 163 |        unlk fp
 164 |        rts
 165
 166         This could create a reloc pointing to <<foo>>, but leave the
 167         offset in the data, something like:
 168
 169 |RELOCATION RECORDS FOR [.text]:
 170 |offset   type      value
 171 |00000006 32        _foo
 172 |
 173 |00000000 4e56 fffc          ; linkw fp,#-4
 174 |00000004 1039 1234 5678     ; moveb @@#12345678,d0
 175 |0000000a 49c0               ; extbl d0
 176 |0000000c 4e5e               ; unlk fp
 177 |0000000e 4e75               ; rts
 178
 179         Using coff and an 88k, some instructions don't have enough
 180         space in them to represent the full address range, and
 181         pointers have to be loaded in two parts. So you'd get something like:
 182
 183 |        or.u     r13,r0,hi16(_foo+0x12345678)
 184 |        ld.b     r2,r13,lo16(_foo+0x12345678)
 185 |        jmp      r1
 186
 187         This should create two relocs, both pointing to <<_foo>>, and with
 188         0x12340000 in their addend field. The data would consist of:
 189
 190 |RELOCATION RECORDS FOR [.text]:
 191 |offset   type      value
 192 |00000002 HVRT16    _foo+0x12340000
 193 |00000006 LVRT16    _foo+0x12340000
 194 |
 195 |00000000 5da05678           ; or.u r13,r0,0x5678
 196 |00000004 1c4d5678           ; ld.b r2,r13,0x5678
 197 |00000008 f400c001           ; jmp r1
 198
 199         The relocation routine digs out the value from the data, adds
 200         it to the addend to get the original offset, and then adds the
 201         value of <<_foo>>. Note that all 32 bits have to be kept around
 202         somewhere, to cope with carry from bit 15 to bit 16.
 203
 204         One further example is the sparc and the a.out format. The
 205         sparc has a similar problem to the 88k, in that some
 206         instructions don't have room for an entire offset, but on the
 207         sparc the parts are created in odd sized lumps. The designers of
 208         the a.out format chose to not use the data within the section
 209         for storing part of the offset; all the offset is kept within
 210         the reloc. Anything in the data should be ignored.
 211
 212 |        save %sp,-112,%sp
 213 |        sethi %hi(_foo+0x12345678),%g2
 214 |        ldsb [%g2+%lo(_foo+0x12345678)],%i0
 215 |        ret
 216 |        restore
 217
 218         Both relocs contain a pointer to <<foo>>, and the offsets
 219         contain junk.
 220
 221 |RELOCATION RECORDS FOR [.text]:
 222 |offset   type      value
 223 |00000004 HI22      _foo+0x12345678
 224 |00000008 LO10      _foo+0x12345678
 225 |
 226 |00000000 9de3bf90     ; save %sp,-112,%sp
 227 |00000004 05000000     ; sethi %hi(_foo+0),%g2
 228 |00000008 f048a000     ; ldsb [%g2+%lo(_foo+0)],%i0
 229 |0000000c 81c7e008     ; ret
 230 |00000010 81e80000     ; restore
 231
 232         o <<howto>>
 233
 234         The <<howto>> field can be imagined as a
 235         relocation instruction. It is a pointer to a structure which
 236         contains information on what to do with all of the other
 237         information in the reloc record and data section. A back end
 238         would normally have a relocation instruction set and turn
 239         relocations into pointers to the correct structure on input -
 240         but it would be possible to create each howto field on demand.
 241
 242 */
 243
 244 /*
 245 SUBSUBSECTION
 246         <<enum complain_overflow>>
 247
 248         Indicates what sort of overflow checking should be done when
 249         performing a relocation.
 250
 251 CODE_FRAGMENT
 252 .
 253 .enum complain_overflow
 254 .{
 255 .  {* Do not complain on overflow.  *}
 256 .  complain_overflow_dont,
 257 .
 258 .  {* Complain if the bitfield overflows, whether it is considered
 259 .     as signed or unsigned.  *}
 260 .  complain_overflow_bitfield,
 261 .
 262 .  {* Complain if the value overflows when considered as signed
 263 .     number.  *}
 264 .  complain_overflow_signed,
 265 .
 266 .  {* Complain if the value overflows when considered as an
 267 .     unsigned number.  *}
 268 .  complain_overflow_unsigned
 269 .};
 270
 271 */
 272
 273 /*
 274 SUBSUBSECTION
 275         <<reloc_howto_type>>
 276
 277         The <<reloc_howto_type>> is a structure which contains all the
 278         information that libbfd needs to know to tie up a back end's data.
 279
 280 CODE_FRAGMENT
 281 .struct symbol_cache_entry;             {* Forward declaration.  *}
 282 .
 283 .struct reloc_howto_struct
 284 .{
 285 .  {*  The type field has mainly a documentary use - the back end can
 286 .      do what it wants with it, though normally the back end's
 287 .      external idea of what a reloc number is stored
 288 .      in this field.  For example, a PC relative word relocation
 289 .      in a coff environment has the type 023 - because that's
 290 .      what the outside world calls a R_PCRWORD reloc.  *}
 291 .  unsigned int type;
 292 .
 293 .  {*  The value the final relocation is shifted right by.  This drops
 294 .      unwanted data from the relocation.  *}
 295 .  unsigned int rightshift;
 296 .
 297 .  {*  The size of the item to be relocated.  This is *not* a
 298 .      power-of-two measure.  To get the number of bytes operated
 299 .      on by a type of relocation, use bfd_get_reloc_size.  *}
 300 .  int size;
 301 .
 302 .  {*  The number of bits in the item to be relocated.  This is used
 303 .      when doing overflow checking.  *}
 304 .  unsigned int bitsize;
 305 .
 306 .  {*  Notes that the relocation is relative to the location in the
 307 .      data section of the addend.  The relocation function will
 308 .      subtract from the relocation value the address of the location
 309 .      being relocated.  *}
 310 .  bfd_boolean pc_relative;
 311 .
 312 .  {*  The bit position of the reloc value in the destination.
 313 .      The relocated value is left shifted by this amount.  *}
 314 .  unsigned int bitpos;
 315 .
 316 .  {* What type of overflow error should be checked for when
 317 .     relocating.  *}
 318 .  enum complain_overflow complain_on_overflow;
 319 .
 320 .  {* If this field is non null, then the supplied function is
 321 .     called rather than the normal function.  This allows really
 322 .     strange relocation methods to be accomodated (e.g., i960 callj
 323 .     instructions).  *}
 324 .  bfd_reloc_status_type (*special_function)
 325 .    (bfd *, arelent *, struct symbol_cache_entry *, void *, asection *,
 326 .     bfd *, char **);
 327 .
 328 .  {* The textual name of the relocation type.  *}
 329 .  char *name;
 330 .
 331 .  {* Some formats record a relocation addend in the section contents
 332 .     rather than with the relocation.  For ELF formats this is the
 333 .     distinction between USE_REL and USE_RELA (though the code checks
 334 .     for USE_REL == 1/0).  The value of this field is TRUE if the
 335 .     addend is recorded with the section contents; when performing a
 336 .     partial link (ld -r) the section contents (the data) will be
 337 .     modified.  The value of this field is FALSE if addends are
 338 .     recorded with the relocation (in arelent.addend); when performing
 339 .     a partial link the relocation will be modified.
 340 .     All relocations for all ELF USE_RELA targets should set this field
 341 .     to FALSE (values of TRUE should be looked on with suspicion).
 342 .     However, the converse is not true: not all relocations of all ELF
 343 .     USE_REL targets set this field to TRUE.  Why this is so is peculiar
 344 .     to each particular target.  For relocs that aren't used in partial
 345 .     links (e.g. GOT stuff) it doesn't matter what this is set to.  *}
 346 .  bfd_boolean partial_inplace;
 347 .
 348 .  {* src_mask selects the part of the instruction (or data) to be used
 349 .     in the relocation sum.  If the target relocations don't have an
 350 .     addend in the reloc, eg. ELF USE_REL, src_mask will normally equal
 351 .     dst_mask to extract the addend from the section contents.  If
 352 .     relocations do have an addend in the reloc, eg. ELF USE_RELA, this
 353 .     field should be zero.  Non-zero values for ELF USE_RELA targets are
 354 .     bogus as in those cases the value in the dst_mask part of the
 355 .     section contents should be treated as garbage.  *}
 356 .  bfd_vma src_mask;
 357 .
 358 .  {* dst_mask selects which parts of the instruction (or data) are
 359 .     replaced with a relocated value.  *}
 360 .  bfd_vma dst_mask;
 361 .
 362 .  {* When some formats create PC relative instructions, they leave
 363 .     the value of the pc of the place being relocated in the offset
 364 .     slot of the instruction, so that a PC relative relocation can
 365 .     be made just by adding in an ordinary offset (e.g., sun3 a.out).
 366 .     Some formats leave the displacement part of an instruction
 367 .     empty (e.g., m88k bcs); this flag signals the fact.  *}
 368 .  bfd_boolean pcrel_offset;
 369 .};
 370 .
 371 */
 372
 373 /*
 374 FUNCTION
 375         The HOWTO Macro
 376
 377 DESCRIPTION
 378         The HOWTO define is horrible and will go away.
 379
 380 .#define HOWTO(C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC) \
 381 .  { (unsigned) C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC }
 382
 383 DESCRIPTION
 384         And will be replaced with the totally magic way. But for the
 385         moment, we are compatible, so do it this way.
 386
 387 .#define NEWHOWTO(FUNCTION, NAME, SIZE, REL, IN) \
 388 .  HOWTO (0, 0, SIZE, 0, REL, 0, complain_overflow_dont, FUNCTION, \
 389 .         NAME, FALSE, 0, 0, IN)
 390 .
 391
 392 DESCRIPTION
 393         This is used to fill in an empty howto entry in an array.
 394
 395 .#define EMPTY_HOWTO(C) \
 396 .  HOWTO ((C), 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL, \
 397 .         NULL, FALSE, 0, 0, FALSE)
 398 .
 399
 400 DESCRIPTION
 401         Helper routine to turn a symbol into a relocation value.
 402
 403 .#define HOWTO_PREPARE(relocation, symbol)               \
 404 .  {                                                     \
 405 .    if (symbol != NULL)                                 \
 406 .      {                                                 \
 407 .        if (bfd_is_com_section (symbol->section))       \
 408 .          {                                             \
 409 .            relocation = 0;                             \
 410 .          }                                             \
 411 .        else                                            \
 412 .          {                                             \
 413 .            relocation = symbol->value;                 \
 414 .          }                                             \
 415 .      }                                                 \
 416 .  }
 417 .
 418 */
 419
 420 /*
 421 FUNCTION
 422         bfd_get_reloc_size
 423
 424 SYNOPSIS
 425         unsigned int bfd_get_reloc_size (reloc_howto_type *);
 426
 427 DESCRIPTION
 428         For a reloc_howto_type that operates on a fixed number of bytes,
 429         this returns the number of bytes operated on.
 430  */
 431
 432 unsigned int
 433 bfd_get_reloc_size (reloc_howto_type *howto)
 434 {
 435   switch (howto->size)
 436     {
 437     case 0: return 1;
 438     case 1: return 2;
 439     case 2: return 4;
 440     case 3: return 0;
 441     case 4: return 8;
 442     case 8: return 16;
 443     case -2: return 4;
 444     default: abort ();
 445     }
 446 }
 447
 448 /*
 449 TYPEDEF
 450         arelent_chain
 451
 452 DESCRIPTION
 453
 454         How relocs are tied together in an <<asection>>:
 455
 456 .typedef struct relent_chain
 457 .{
 458 .  arelent relent;
 459 .  struct relent_chain *next;
 460 .}
 461 .arelent_chain;
 462 .
 463 */
 464
 465 /* N_ONES produces N one bits, without overflowing machine arithmetic.  */
 466 #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1)
 467
 468 /*
 469 FUNCTION
 470         bfd_check_overflow
 471
 472 SYNOPSIS
 473         bfd_reloc_status_type bfd_check_overflow
 474           (enum complain_overflow how,
 475            unsigned int bitsize,
 476            unsigned int rightshift,
 477            unsigned int addrsize,
 478            bfd_vma relocation);
 479
 480 DESCRIPTION
 481         Perform overflow checking on @var{relocation} which has
 482         @var{bitsize} significant bits and will be shifted right by
 483         @var{rightshift} bits, on a machine with addresses containing
 484         @var{addrsize} significant bits.  The result is either of
 485         @code{bfd_reloc_ok} or @code{bfd_reloc_overflow}.
 486
 487 */
 488
 489 bfd_reloc_status_type
 490 bfd_check_overflow (enum complain_overflow how,
 491                     unsigned int bitsize,
 492                     unsigned int rightshift,
 493                     unsigned int addrsize,
 494                     bfd_vma relocation)
 495 {
 496   bfd_vma fieldmask, addrmask, signmask, ss, a;
 497   bfd_reloc_status_type flag = bfd_reloc_ok;
 498
 499   a = relocation;
 500
 501   /* Note: BITSIZE should always be <= ADDRSIZE, but in case it's not,
 502      we'll be permissive: extra bits in the field mask will
 503      automatically extend the address mask for purposes of the
 504      overflow check.  */
 505   fieldmask = N_ONES (bitsize);
 506   addrmask = N_ONES (addrsize) | fieldmask;
 507
 508   switch (how)
 509     {
 510     case complain_overflow_dont:
 511       break;
 512
 513     case complain_overflow_signed:
 514       /* If any sign bits are set, all sign bits must be set.  That
 515          is, A must be a valid negative address after shifting.  */
 516       a = (a & addrmask) >> rightshift;
 517       signmask = ~ (fieldmask >> 1);
 518       ss = a & signmask;
 519       if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
 520         flag = bfd_reloc_overflow;
 521       break;
 522
 523     case complain_overflow_unsigned:
 524       /* We have an overflow if the address does not fit in the field.  */
 525       a = (a & addrmask) >> rightshift;
 526       if ((a & ~ fieldmask) != 0)
 527         flag = bfd_reloc_overflow;
 528       break;
 529
 530     case complain_overflow_bitfield:
 531       /* Bitfields are sometimes signed, sometimes unsigned.  We
 532          explicitly allow an address wrap too, which means a bitfield
 533          of n bits is allowed to store -2**n to 2**n-1.  Thus overflow
 534          if the value has some, but not all, bits set outside the
 535          field.  */
 536       a >>= rightshift;
 537       ss = a & ~ fieldmask;
 538       if (ss != 0 && ss != (((bfd_vma) -1 >> rightshift) & ~ fieldmask))
 539         flag = bfd_reloc_overflow;
 540       break;
 541
 542     default:
 543       abort ();
 544     }
 545
 546   return flag;
 547 }
 548
 549 /*
 550 FUNCTION
 551         bfd_perform_relocation
 552
 553 SYNOPSIS
 554         bfd_reloc_status_type bfd_perform_relocation
 555           (bfd *abfd,
 556            arelent *reloc_entry,
 557            void *data,
 558            asection *input_section,
 559            bfd *output_bfd,
 560            char **error_message);
 561
 562 DESCRIPTION
 563         If @var{output_bfd} is supplied to this function, the
 564         generated image will be relocatable; the relocations are
 565         copied to the output file after they have been changed to
 566         reflect the new state of the world. There are two ways of
 567         reflecting the results of partial linkage in an output file:
 568         by modifying the output data in place, and by modifying the
 569         relocation record.  Some native formats (e.g., basic a.out and
 570         basic coff) have no way of specifying an addend in the
 571         relocation type, so the addend has to go in the output data.
 572         This is no big deal since in these formats the output data
 573         slot will always be big enough for the addend. Complex reloc
 574         types with addends were invented to solve just this problem.
 575         The @var{error_message} argument is set to an error message if
 576         this return @code{bfd_reloc_dangerous}.
 577
 578 */
 579
 580 bfd_reloc_status_type
 581 bfd_perform_relocation (bfd *abfd,
 582                         arelent *reloc_entry,
 583                         void *data,
 584                         asection *input_section,
 585                         bfd *output_bfd,
 586                         char **error_message)
 587 {
 588   bfd_vma relocation;
 589   bfd_reloc_status_type flag = bfd_reloc_ok;
 590   bfd_size_type octets = reloc_entry->address * bfd_octets_per_byte (abfd);
 591   bfd_vma output_base = 0;
 592   reloc_howto_type *howto = reloc_entry->howto;
 593   asection *reloc_target_output_section;
 594   asymbol *symbol;
 595
 596   symbol = *(reloc_entry->sym_ptr_ptr);
 597   if (bfd_is_abs_section (symbol->section)
 598       && output_bfd != NULL)
 599     {
 600       reloc_entry->address += input_section->output_offset;
 601       return bfd_reloc_ok;
 602     }
 603
 604   /* If we are not producing relocatable output, return an error if
 605      the symbol is not defined.  An undefined weak symbol is
 606      considered to have a value of zero (SVR4 ABI, p. 4-27).  */
 607   if (bfd_is_und_section (symbol->section)
 608       && (symbol->flags & BSF_WEAK) == 0
 609       && output_bfd == NULL)
 610     flag = bfd_reloc_undefined;
 611
 612   /* If there is a function supplied to handle this relocation type,
 613      call it.  It'll return `bfd_reloc_continue' if further processing
 614      can be done.  */
 615   if (howto->special_function)
 616     {
 617       bfd_reloc_status_type cont;
 618       cont = howto->special_function (abfd, reloc_entry, symbol, data,
 619                                       input_section, output_bfd,
 620                                       error_message);
 621       if (cont != bfd_reloc_continue)
 622         return cont;
 623     }
 624
 625   /* Is the address of the relocation really within the section?  */
 626   if (reloc_entry->address > (input_section->_cooked_size
 627                               / bfd_octets_per_byte (abfd)))
 628     return bfd_reloc_outofrange;
 629
 630   /* Work out which section the relocation is targetted at and the
 631      initial relocation command value.  */
 632
 633   /* Get symbol value.  (Common symbols are special.)  */
 634   if (bfd_is_com_section (symbol->section))
 635     relocation = 0;
 636   else
 637     relocation = symbol->value;
 638
 639   reloc_target_output_section = symbol->section->output_section;
 640
 641   /* Convert input-section-relative symbol value to absolute.  */
 642   if ((output_bfd && ! howto->partial_inplace)
 643       || reloc_target_output_section == NULL)
 644     output_base = 0;
 645   else
 646     output_base = reloc_target_output_section->vma;
 647
 648   relocation += output_base + symbol->section->output_offset;
 649
 650   /* Add in supplied addend.  */
 651   relocation += reloc_entry->addend;
 652
 653   /* Here the variable relocation holds the final address of the
 654      symbol we are relocating against, plus any addend.  */
 655
 656   if (howto->pc_relative)
 657     {
 658       /* This is a PC relative relocation.  We want to set RELOCATION
 659          to the distance between the address of the symbol and the
 660          location.  RELOCATION is already the address of the symbol.
 661
 662          We start by subtracting the address of the section containing
 663          the location.
 664
 665          If pcrel_offset is set, we must further subtract the position
 666          of the location within the section.  Some targets arrange for
 667          the addend to be the negative of the position of the location
 668          within the section; for example, i386-aout does this.  For
 669          i386-aout, pcrel_offset is FALSE.  Some other targets do not
 670          include the position of the location; for example, m88kbcs,
 671          or ELF.  For those targets, pcrel_offset is TRUE.
 672
 673          If we are producing relocatable output, then we must ensure
 674          that this reloc will be correctly computed when the final
 675          relocation is done.  If pcrel_offset is FALSE we want to wind
 676          up with the negative of the location within the section,
 677          which means we must adjust the existing addend by the change
 678          in the location within the section.  If pcrel_offset is TRUE
 679          we do not want to adjust the existing addend at all.
 680
 681          FIXME: This seems logical to me, but for the case of
 682          producing relocatable output it is not what the code
 683          actually does.  I don't want to change it, because it seems
 684          far too likely that something will break.  */
 685
 686       relocation -=
 687         input_section->output_section->vma + input_section->output_offset;
 688
 689       if (howto->pcrel_offset)
 690         relocation -= reloc_entry->address;
 691     }
 692
 693   if (output_bfd != NULL)
 694     {
 695       if (! howto->partial_inplace)
 696         {
 697           /* This is a partial relocation, and we want to apply the relocation
 698              to the reloc entry rather than the raw data. Modify the reloc
 699              inplace to reflect what we now know.  */
 700           reloc_entry->addend = relocation;
 701           reloc_entry->address += input_section->output_offset;
 702           return flag;
 703         }
 704       else
 705         {
 706           /* This is a partial relocation, but inplace, so modify the
 707              reloc record a bit.
 708
 709              If we've relocated with a symbol with a section, change
 710              into a ref to the section belonging to the symbol.  */
 711
 712           reloc_entry->address += input_section->output_offset;
 713
 714           /* WTF?? */
 715           if (abfd->xvec->flavour == bfd_target_coff_flavour
 716               && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
 717               && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
 718             {
 719 #if 1
 720               /* For m68k-coff, the addend was being subtracted twice during
 721                  relocation with -r.  Removing the line below this comment
 722                  fixes that problem; see PR 2953.
 723
 724 However, Ian wrote the following, regarding removing the line below,
 725 which explains why it is still enabled:  --djm
 726
 727 If you put a patch like that into BFD you need to check all the COFF
 728 linkers.  I am fairly certain that patch will break coff-i386 (e.g.,
 729 SCO); see coff_i386_reloc in coff-i386.c where I worked around the
 730 problem in a different way.  There may very well be a reason that the
 731 code works as it does.
 732
 733 Hmmm.  The first obvious point is that bfd_perform_relocation should
 734 not have any tests that depend upon the flavour.  It's seem like
 735 entirely the wrong place for such a thing.  The second obvious point
 736 is that the current code ignores the reloc addend when producing
 737 relocatable output for COFF.  That's peculiar.  In fact, I really
 738 have no idea what the point of the line you want to remove is.
 739
 740 A typical COFF reloc subtracts the old value of the symbol and adds in
 741 the new value to the location in the object file (if it's a pc
 742 relative reloc it adds the difference between the symbol value and the
 743 location).  When relocating we need to preserve that property.
 744
 745 BFD handles this by setting the addend to the negative of the old
 746 value of the symbol.  Unfortunately it handles common symbols in a
 747 non-standard way (it doesn't subtract the old value) but that's a
 748 different story (we can't change it without losing backward
 749 compatibility with old object files) (coff-i386 does subtract the old
 750 value, to be compatible with existing coff-i386 targets, like SCO).
 751
 752 So everything works fine when not producing relocatable output.  When
 753 we are producing relocatable output, logically we should do exactly
 754 what we do when not producing relocatable output.  Therefore, your
 755 patch is correct.  In fact, it should probably always just set
 756 reloc_entry->addend to 0 for all cases, since it is, in fact, going to
 757 add the value into the object file.  This won't hurt the COFF code,
 758 which doesn't use the addend; I'm not sure what it will do to other
 759 formats (the thing to check for would be whether any formats both use
 760 the addend and set partial_inplace).
 761
 762 When I wanted to make coff-i386 produce relocatable output, I ran
 763 into the problem that you are running into: I wanted to remove that
 764 line.  Rather than risk it, I made the coff-i386 relocs use a special
 765 function; it's coff_i386_reloc in coff-i386.c.  The function
 766 specifically adds the addend field into the object file, knowing that
 767 bfd_perform_relocation is not going to.  If you remove that line, then
 768 coff-i386.c will wind up adding the addend field in twice.  It's
 769 trivial to fix; it just needs to be done.
 770
 771 The problem with removing the line is just that it may break some
 772 working code.  With BFD it's hard to be sure of anything.  The right
 773 way to deal with this is simply to build and test at least all the
 774 supported COFF targets.  It should be straightforward if time and disk
 775 space consuming.  For each target:
 776     1) build the linker
 777     2) generate some executable, and link it using -r (I would
 778        probably use paranoia.o and link against newlib/libc.a, which
 779        for all the supported targets would be available in
 780        /usr/cygnus/progressive/H-host/target/lib/libc.a).
 781     3) make the change to reloc.c
 782     4) rebuild the linker
 783     5) repeat step 2
 784     6) if the resulting object files are the same, you have at least
 785        made it no worse
 786     7) if they are different you have to figure out which version is
 787        right
 788 */
 789               relocation -= reloc_entry->addend;
 790 #endif
 791               reloc_entry->addend = 0;
 792             }
 793           else
 794             {
 795               reloc_entry->addend = relocation;
 796             }
 797         }
 798     }
 799   else
 800     {
 801       reloc_entry->addend = 0;
 802     }
 803
 804   /* FIXME: This overflow checking is incomplete, because the value
 805      might have overflowed before we get here.  For a correct check we
 806      need to compute the value in a size larger than bitsize, but we
 807      can't reasonably do that for a reloc the same size as a host
 808      machine word.
 809      FIXME: We should also do overflow checking on the result after
 810      adding in the value contained in the object file.  */
 811   if (howto->complain_on_overflow != complain_overflow_dont
 812       && flag == bfd_reloc_ok)
 813     flag = bfd_check_overflow (howto->complain_on_overflow,
 814                                howto->bitsize,
 815                                howto->rightshift,
 816                                bfd_arch_bits_per_address (abfd),
 817                                relocation);
 818
 819   /* Either we are relocating all the way, or we don't want to apply
 820      the relocation to the reloc entry (probably because there isn't
 821      any room in the output format to describe addends to relocs).  */
 822
 823   /* The cast to bfd_vma avoids a bug in the Alpha OSF/1 C compiler
 824      (OSF version 1.3, compiler version 3.11).  It miscompiles the
 825      following program:
 826
 827      struct str
 828      {
 829        unsigned int i0;
 830      } s = { 0 };
 831
 832      int
 833      main ()
 834      {
 835        unsigned long x;
 836
 837        x = 0x100000000;
 838        x <<= (unsigned long) s.i0;
 839        if (x == 0)
 840          printf ("failed\n");
 841        else
 842          printf ("succeeded (%lx)\n", x);
 843      }
 844      */
 845
 846   relocation >>= (bfd_vma) howto->rightshift;
 847
 848   /* Shift everything up to where it's going to be used.  */
 849   relocation <<= (bfd_vma) howto->bitpos;
 850
 851   /* Wait for the day when all have the mask in them.  */
 852
 853   /* What we do:
 854      i instruction to be left alone
 855      o offset within instruction
 856      r relocation offset to apply
 857      S src mask
 858      D dst mask
 859      N ~dst mask
 860      A part 1
 861      B part 2
 862      R result
 863
 864      Do this:
 865      ((  i i i i i o o o o o  from bfd_get<size>
 866      and           S S S S S) to get the size offset we want
 867      +   r r r r r r r r r r) to get the final value to place
 868      and           D D D D D  to chop to right size
 869      -----------------------
 870      =             A A A A A
 871      And this:
 872      (   i i i i i o o o o o  from bfd_get<size>
 873      and N N N N N          ) get instruction
 874      -----------------------
 875      =   B B B B B
 876
 877      And then:
 878      (   B B B B B
 879      or            A A A A A)
 880      -----------------------
 881      =   R R R R R R R R R R  put into bfd_put<size>
 882      */
 883
 884 #define DOIT(x) \
 885   x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) +  relocation) & howto->dst_mask))
 886
 887   switch (howto->size)
 888     {
 889     case 0:
 890       {
 891         char x = bfd_get_8 (abfd, (char *) data + octets);
 892         DOIT (x);
 893         bfd_put_8 (abfd, x, (unsigned char *) data + octets);
 894       }
 895       break;
 896
 897     case 1:
 898       {
 899         short x = bfd_get_16 (abfd, (bfd_byte *) data + octets);
 900         DOIT (x);
 901         bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data + octets);
 902       }
 903       break;
 904     case 2:
 905       {
 906         long x = bfd_get_32 (abfd, (bfd_byte *) data + octets);
 907         DOIT (x);
 908         bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 909       }
 910       break;
 911     case -2:
 912       {
 913         long x = bfd_get_32 (abfd, (bfd_byte *) data + octets);
 914         relocation = -relocation;
 915         DOIT (x);
 916         bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 917       }
 918       break;
 919
 920     case -1:
 921       {
 922         long x = bfd_get_16 (abfd, (bfd_byte *) data + octets);
 923         relocation = -relocation;
 924         DOIT (x);
 925         bfd_put_16 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 926       }
 927       break;
 928
 929     case 3:
 930       /* Do nothing */
 931       break;
 932
 933     case 4:
 934 #ifdef BFD64
 935       {
 936         bfd_vma x = bfd_get_64 (abfd, (bfd_byte *) data + octets);
 937         DOIT (x);
 938         bfd_put_64 (abfd, x, (bfd_byte *) data + octets);
 939       }
 940 #else
 941       abort ();
 942 #endif
 943       break;
 944     default:
 945       return bfd_reloc_other;
 946     }
 947
 948   return flag;
 949 }
 950
 951 /*
 952 FUNCTION
 953         bfd_install_relocation
 954
 955 SYNOPSIS
 956         bfd_reloc_status_type bfd_install_relocation
 957           (bfd *abfd,
 958            arelent *reloc_entry,
 959            void *data, bfd_vma data_start,
 960            asection *input_section,
 961            char **error_message);
 962
 963 DESCRIPTION
 964         This looks remarkably like <<bfd_perform_relocation>>, except it
 965         does not expect that the section contents have been filled in.
 966         I.e., it's suitable for use when creating, rather than applying
 967         a relocation.
 968
 969         For now, this function should be considered reserved for the
 970         assembler.
 971 */
 972
 973 bfd_reloc_status_type
 974 bfd_install_relocation (bfd *abfd,
 975                         arelent *reloc_entry,
 976                         void *data_start,
 977                         bfd_vma data_start_offset,
 978                         asection *input_section,
 979                         char **error_message)
 980 {
 981   bfd_vma relocation;
 982   bfd_reloc_status_type flag = bfd_reloc_ok;
 983   bfd_size_type octets = reloc_entry->address * bfd_octets_per_byte (abfd);
 984   bfd_vma output_base = 0;
 985   reloc_howto_type *howto = reloc_entry->howto;
 986   asection *reloc_target_output_section;
 987   asymbol *symbol;
 988   bfd_byte *data;
 989
 990   symbol = *(reloc_entry->sym_ptr_ptr);
 991   if (bfd_is_abs_section (symbol->section))
 992     {
 993       reloc_entry->address += input_section->output_offset;
 994       return bfd_reloc_ok;
 995     }
 996
 997   /* If there is a function supplied to handle this relocation type,
 998      call it.  It'll return `bfd_reloc_continue' if further processing
 999      can be done.  */
1000   if (howto->special_function)
1001     {
1002       bfd_reloc_status_type cont;
1003
1004       /* XXX - The special_function calls haven't been fixed up to deal
1005          with creating new relocations and section contents.  */
1006       cont = howto->special_function (abfd, reloc_entry, symbol,
1007                                       /* XXX - Non-portable! */
1008                                       ((bfd_byte *) data_start
1009                                        - data_start_offset),
1010                                       input_section, abfd, error_message);
1011       if (cont != bfd_reloc_continue)
1012         return cont;
1013     }
1014
1015   /* Is the address of the relocation really within the section?  */
1016   if (reloc_entry->address > (input_section->_cooked_size
1017                               / bfd_octets_per_byte (abfd)))
1018     return bfd_reloc_outofrange;
1019
1020   /* Work out which section the relocation is targetted at and the
1021      initial relocation command value.  */
1022
1023   /* Get symbol value.  (Common symbols are special.)  */
1024   if (bfd_is_com_section (symbol->section))
1025     relocation = 0;
1026   else
1027     relocation = symbol->value;
1028
1029   reloc_target_output_section = symbol->section->output_section;
1030
1031   /* Convert input-section-relative symbol value to absolute.  */
1032   if (! howto->partial_inplace)
1033     output_base = 0;
1034   else
1035     output_base = reloc_target_output_section->vma;
1036
1037   relocation += output_base + symbol->section->output_offset;
1038
1039   /* Add in supplied addend.  */
1040   relocation += reloc_entry->addend;
1041
1042   /* Here the variable relocation holds the final address of the
1043      symbol we are relocating against, plus any addend.  */
1044
1045   if (howto->pc_relative)
1046     {
1047       /* This is a PC relative relocation.  We want to set RELOCATION
1048          to the distance between the address of the symbol and the
1049          location.  RELOCATION is already the address of the symbol.
1050
1051          We start by subtracting the address of the section containing
1052          the location.
1053
1054          If pcrel_offset is set, we must further subtract the position
1055          of the location within the section.  Some targets arrange for
1056          the addend to be the negative of the position of the location
1057          within the section; for example, i386-aout does this.  For
1058          i386-aout, pcrel_offset is FALSE.  Some other targets do not
1059          include the position of the location; for example, m88kbcs,
1060          or ELF.  For those targets, pcrel_offset is TRUE.
1061
1062          If we are producing relocatable output, then we must ensure
1063          that this reloc will be correctly computed when the final
1064          relocation is done.  If pcrel_offset is FALSE we want to wind
1065          up with the negative of the location within the section,
1066          which means we must adjust the existing addend by the change
1067          in the location within the section.  If pcrel_offset is TRUE
1068          we do not want to adjust the existing addend at all.
1069
1070          FIXME: This seems logical to me, but for the case of
1071          producing relocatable output it is not what the code
1072          actually does.  I don't want to change it, because it seems
1073          far too likely that something will break.  */
1074
1075       relocation -=
1076         input_section->output_section->vma + input_section->output_offset;
1077
1078       if (howto->pcrel_offset && howto->partial_inplace)
1079         relocation -= reloc_entry->address;
1080     }
1081
1082   if (! howto->partial_inplace)
1083     {
1084       /* This is a partial relocation, and we want to apply the relocation
1085          to the reloc entry rather than the raw data. Modify the reloc
1086          inplace to reflect what we now know.  */
1087       reloc_entry->addend = relocation;
1088       reloc_entry->address += input_section->output_offset;
1089       return flag;
1090     }
1091   else
1092     {
1093       /* This is a partial relocation, but inplace, so modify the
1094          reloc record a bit.
1095
1096          If we've relocated with a symbol with a section, change
1097          into a ref to the section belonging to the symbol.  */
1098       reloc_entry->address += input_section->output_offset;
1099
1100       /* WTF?? */
1101       if (abfd->xvec->flavour == bfd_target_coff_flavour
1102           && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
1103           && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
1104         {
1105 #if 1
1106 /* For m68k-coff, the addend was being subtracted twice during
1107    relocation with -r.  Removing the line below this comment
1108    fixes that problem; see PR 2953.
1109
1110 However, Ian wrote the following, regarding removing the line below,
1111 which explains why it is still enabled:  --djm
1112
1113 If you put a patch like that into BFD you need to check all the COFF
1114 linkers.  I am fairly certain that patch will break coff-i386 (e.g.,
1115 SCO); see coff_i386_reloc in coff-i386.c where I worked around the
1116 problem in a different way.  There may very well be a reason that the
1117 code works as it does.
1118
1119 Hmmm.  The first obvious point is that bfd_install_relocation should
1120 not have any tests that depend upon the flavour.  It's seem like
1121 entirely the wrong place for such a thing.  The second obvious point
1122 is that the current code ignores the reloc addend when producing
1123 relocatable output for COFF.  That's peculiar.  In fact, I really
1124 have no idea what the point of the line you want to remove is.
1125
1126 A typical COFF reloc subtracts the old value of the symbol and adds in
1127 the new value to the location in the object file (if it's a pc
1128 relative reloc it adds the difference between the symbol value and the
1129 location).  When relocating we need to preserve that property.
1130
1131 BFD handles this by setting the addend to the negative of the old
1132 value of the symbol.  Unfortunately it handles common symbols in a
1133 non-standard way (it doesn't subtract the old value) but that's a
1134 different story (we can't change it without losing backward
1135 compatibility with old object files) (coff-i386 does subtract the old
1136 value, to be compatible with existing coff-i386 targets, like SCO).
1137
1138 So everything works fine when not producing relocatable output.  When
1139 we are producing relocatable output, logically we should do exactly
1140 what we do when not producing relocatable output.  Therefore, your
1141 patch is correct.  In fact, it should probably always just set
1142 reloc_entry->addend to 0 for all cases, since it is, in fact, going to
1143 add the value into the object file.  This won't hurt the COFF code,
1144 which doesn't use the addend; I'm not sure what it will do to other
1145 formats (the thing to check for would be whether any formats both use
1146 the addend and set partial_inplace).
1147
1148 When I wanted to make coff-i386 produce relocatable output, I ran
1149 into the problem that you are running into: I wanted to remove that
1150 line.  Rather than risk it, I made the coff-i386 relocs use a special
1151 function; it's coff_i386_reloc in coff-i386.c.  The function
1152 specifically adds the addend field into the object file, knowing that
1153 bfd_install_relocation is not going to.  If you remove that line, then
1154 coff-i386.c will wind up adding the addend field in twice.  It's
1155 trivial to fix; it just needs to be done.
1156
1157 The problem with removing the line is just that it may break some
1158 working code.  With BFD it's hard to be sure of anything.  The right
1159 way to deal with this is simply to build and test at least all the
1160 supported COFF targets.  It should be straightforward if time and disk
1161 space consuming.  For each target:
1162     1) build the linker
1163     2) generate some executable, and link it using -r (I would
1164        probably use paranoia.o and link against newlib/libc.a, which
1165        for all the supported targets would be available in
1166        /usr/cygnus/progressive/H-host/target/lib/libc.a).
1167     3) make the change to reloc.c
1168     4) rebuild the linker
1169     5) repeat step 2
1170     6) if the resulting object files are the same, you have at least
1171        made it no worse
1172     7) if they are different you have to figure out which version is
1173        right.  */
1174           relocation -= reloc_entry->addend;
1175 #endif
1176           reloc_entry->addend = 0;
1177         }
1178       else
1179         {
1180           reloc_entry->addend = relocation;
1181         }
1182     }
1183
1184   /* FIXME: This overflow checking is incomplete, because the value
1185      might have overflowed before we get here.  For a correct check we
1186      need to compute the value in a size larger than bitsize, but we
1187      can't reasonably do that for a reloc the same size as a host
1188      machine word.
1189      FIXME: We should also do overflow checking on the result after
1190      adding in the value contained in the object file.  */
1191   if (howto->complain_on_overflow != complain_overflow_dont)
1192     flag = bfd_check_overflow (howto->complain_on_overflow,
1193                                howto->bitsize,
1194                                howto->rightshift,
1195                                bfd_arch_bits_per_address (abfd),
1196                                relocation);
1197
1198   /* Either we are relocating all the way, or we don't want to apply
1199      the relocation to the reloc entry (probably because there isn't
1200      any room in the output format to describe addends to relocs).  */
1201
1202   /* The cast to bfd_vma avoids a bug in the Alpha OSF/1 C compiler
1203      (OSF version 1.3, compiler version 3.11).  It miscompiles the
1204      following program:
1205
1206      struct str
1207      {
1208        unsigned int i0;
1209      } s = { 0 };
1210
1211      int
1212      main ()
1213      {
1214        unsigned long x;
1215
1216        x = 0x100000000;
1217        x <<= (unsigned long) s.i0;
1218        if (x == 0)
1219          printf ("failed\n");
1220        else
1221          printf ("succeeded (%lx)\n", x);
1222      }
1223      */
1224
1225   relocation >>= (bfd_vma) howto->rightshift;
1226
1227   /* Shift everything up to where it's going to be used.  */
1228   relocation <<= (bfd_vma) howto->bitpos;
1229
1230   /* Wait for the day when all have the mask in them.  */
1231
1232   /* What we do:
1233      i instruction to be left alone
1234      o offset within instruction
1235      r relocation offset to apply
1236      S src mask
1237      D dst mask
1238      N ~dst mask
1239      A part 1
1240      B part 2
1241      R result
1242
1243      Do this:
1244      ((  i i i i i o o o o o  from bfd_get<size>
1245      and           S S S S S) to get the size offset we want
1246      +   r r r r r r r r r r) to get the final value to place
1247      and           D D D D D  to chop to right size
1248      -----------------------
1249      =             A A A A A
1250      And this:
1251      (   i i i i i o o o o o  from bfd_get<size>
1252      and N N N N N          ) get instruction
1253      -----------------------
1254      =   B B B B B
1255
1256      And then:
1257      (   B B B B B
1258      or            A A A A A)
1259      -----------------------
1260      =   R R R R R R R R R R  put into bfd_put<size>
1261      */
1262
1263 #define DOIT(x) \
1264   x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) +  relocation) & howto->dst_mask))
1265
1266   data = (bfd_byte *) data_start + (octets - data_start_offset);
1267
1268   switch (howto->size)
1269     {
1270     case 0:
1271       {
1272         char x = bfd_get_8 (abfd, data);
1273         DOIT (x);
1274         bfd_put_8 (abfd, x, data);
1275       }
1276       break;
1277
1278     case 1:
1279       {
1280         short x = bfd_get_16 (abfd, data);
1281         DOIT (x);
1282         bfd_put_16 (abfd, (bfd_vma) x, data);
1283       }
1284       break;
1285     case 2:
1286       {
1287         long x = bfd_get_32 (abfd, data);
1288         DOIT (x);
1289         bfd_put_32 (abfd, (bfd_vma) x, data);
1290       }
1291       break;
1292     case -2:
1293       {
1294         long x = bfd_get_32 (abfd, data);
1295         relocation = -relocation;
1296         DOIT (x);
1297         bfd_put_32 (abfd, (bfd_vma) x, data);
1298       }
1299       break;
1300
1301     case 3:
1302       /* Do nothing */
1303       break;
1304
1305     case 4:
1306       {
1307         bfd_vma x = bfd_get_64 (abfd, data);
1308         DOIT (x);
1309         bfd_put_64 (abfd, x, data);
1310       }
1311       break;
1312     default:
1313       return bfd_reloc_other;
1314     }
1315
1316   return flag;
1317 }
1318
1319 /* This relocation routine is used by some of the backend linkers.
1320    They do not construct asymbol or arelent structures, so there is no
1321    reason for them to use bfd_perform_relocation.  Also,
1322    bfd_perform_relocation is so hacked up it is easier to write a new
1323    function than to try to deal with it.
1324
1325    This routine does a final relocation.  Whether it is useful for a
1326    relocatable link depends upon how the object format defines
1327    relocations.
1328
1329    FIXME: This routine ignores any special_function in the HOWTO,
1330    since the existing special_function values have been written for
1331    bfd_perform_relocation.
1332
1333    HOWTO is the reloc howto information.
1334    INPUT_BFD is the BFD which the reloc applies to.
1335    INPUT_SECTION is the section which the reloc applies to.
1336    CONTENTS is the contents of the section.
1337    ADDRESS is the address of the reloc within INPUT_SECTION.
1338    VALUE is the value of the symbol the reloc refers to.
1339    ADDEND is the addend of the reloc.  */
1340
1341 bfd_reloc_status_type
1342 _bfd_final_link_relocate (reloc_howto_type *howto,
1343                           bfd *input_bfd,
1344                           asection *input_section,
1345                           bfd_byte *contents,
1346                           bfd_vma address,
1347                           bfd_vma value,
1348                           bfd_vma addend)
1349 {
1350   bfd_vma relocation;
1351
1352   /* Sanity check the address.  */
1353   if (address > input_section->_raw_size)
1354     return bfd_reloc_outofrange;
1355
1356   /* This function assumes that we are dealing with a basic relocation
1357      against a symbol.  We want to compute the value of the symbol to
1358      relocate to.  This is just VALUE, the value of the symbol, plus
1359      ADDEND, any addend associated with the reloc.  */
1360   relocation = value + addend;
1361
1362   /* If the relocation is PC relative, we want to set RELOCATION to
1363      the distance between the symbol (currently in RELOCATION) and the
1364      location we are relocating.  Some targets (e.g., i386-aout)
1365      arrange for the contents of the section to be the negative of the
1366      offset of the location within the section; for such targets
1367      pcrel_offset is FALSE.  Other targets (e.g., m88kbcs or ELF)
1368      simply leave the contents of the section as zero; for such
1369      targets pcrel_offset is TRUE.  If pcrel_offset is FALSE we do not
1370      need to subtract out the offset of the location within the
1371      section (which is just ADDRESS).  */
1372   if (howto->pc_relative)
1373     {
1374       relocation -= (input_section->output_section->vma
1375                      + input_section->output_offset);
1376       if (howto->pcrel_offset)
1377         relocation -= address;
1378     }
1379
1380   return _bfd_relocate_contents (howto, input_bfd, relocation,
1381                                  contents + address);
1382 }
1383
1384 /* Relocate a given location using a given value and howto.  */
1385
1386 bfd_reloc_status_type
1387 _bfd_relocate_contents (reloc_howto_type *howto,
1388                         bfd *input_bfd,
1389                         bfd_vma relocation,
1390                         bfd_byte *location)
1391 {
1392   int size;
1393   bfd_vma x = 0;
1394   bfd_reloc_status_type flag;
1395   unsigned int rightshift = howto->rightshift;
1396   unsigned int bitpos = howto->bitpos;
1397
1398   /* If the size is negative, negate RELOCATION.  This isn't very
1399      general.  */
1400   if (howto->size < 0)
1401     relocation = -relocation;
1402
1403   /* Get the value we are going to relocate.  */
1404   size = bfd_get_reloc_size (howto);
1405   switch (size)
1406     {
1407     default:
1408     case 0:
1409       abort ();
1410     case 1:
1411       x = bfd_get_8 (input_bfd, location);
1412       break;
1413     case 2:
1414       x = bfd_get_16 (input_bfd, location);
1415       break;
1416     case 4:
1417       x = bfd_get_32 (input_bfd, location);
1418       break;
1419     case 8:
1420 #ifdef BFD64
1421       x = bfd_get_64 (input_bfd, location);
1422 #else
1423       abort ();
1424 #endif
1425       break;
1426     }
1427
1428   /* Check for overflow.  FIXME: We may drop bits during the addition
1429      which we don't check for.  We must either check at every single
1430      operation, which would be tedious, or we must do the computations
1431      in a type larger than bfd_vma, which would be inefficient.  */
1432   flag = bfd_reloc_ok;
1433   if (howto->complain_on_overflow != complain_overflow_dont)
1434     {
1435       bfd_vma addrmask, fieldmask, signmask, ss;
1436       bfd_vma a, b, sum;
1437
1438       /* Get the values to be added together.  For signed and unsigned
1439          relocations, we assume that all values should be truncated to
1440          the size of an address.  For bitfields, all the bits matter.
1441          See also bfd_check_overflow.  */
1442       fieldmask = N_ONES (howto->bitsize);
1443       addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask;
1444       a = relocation;
1445       b = x & howto->src_mask;
1446
1447       switch (howto->complain_on_overflow)
1448         {
1449         case complain_overflow_signed:
1450           a = (a & addrmask) >> rightshift;
1451
1452           /* If any sign bits are set, all sign bits must be set.
1453              That is, A must be a valid negative address after
1454              shifting.  */
1455           signmask = ~ (fieldmask >> 1);
1456           ss = a & signmask;
1457           if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
1458             flag = bfd_reloc_overflow;
1459
1460           /* We only need this next bit of code if the sign bit of B
1461              is below the sign bit of A.  This would only happen if
1462              SRC_MASK had fewer bits than BITSIZE.  Note that if
1463              SRC_MASK has more bits than BITSIZE, we can get into
1464              trouble; we would need to verify that B is in range, as
1465              we do for A above.  */
1466           signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1467
1468           /* Set all the bits above the sign bit.  */
1469           b = (b ^ signmask) - signmask;
1470
1471           b = (b & addrmask) >> bitpos;
1472
1473           /* Now we can do the addition.  */
1474           sum = a + b;
1475
1476           /* See if the result has the correct sign.  Bits above the
1477              sign bit are junk now; ignore them.  If the sum is
1478              positive, make sure we did not have all negative inputs;
1479              if the sum is negative, make sure we did not have all
1480              positive inputs.  The test below looks only at the sign
1481              bits, and it really just
1482                  SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
1483              */
1484           signmask = (fieldmask >> 1) + 1;
1485           if (((~ (a ^ b)) & (a ^ sum)) & signmask)
1486             flag = bfd_reloc_overflow;
1487
1488           break;
1489
1490         case complain_overflow_unsigned:
1491           /* Checking for an unsigned overflow is relatively easy:
1492              trim the addresses and add, and trim the result as well.
1493              Overflow is normally indicated when the result does not
1494              fit in the field.  However, we also need to consider the
1495              case when, e.g., fieldmask is 0x7fffffff or smaller, an
1496              input is 0x80000000, and bfd_vma is only 32 bits; then we
1497              will get sum == 0, but there is an overflow, since the
1498              inputs did not fit in the field.  Instead of doing a
1499              separate test, we can check for this by or-ing in the
1500              operands when testing for the sum overflowing its final
1501              field.  */
1502           a = (a & addrmask) >> rightshift;
1503           b = (b & addrmask) >> bitpos;
1504           sum = (a + b) & addrmask;
1505           if ((a | b | sum) & ~ fieldmask)
1506             flag = bfd_reloc_overflow;
1507
1508           break;
1509
1510         case complain_overflow_bitfield:
1511           /* Much like the signed check, but for a field one bit
1512              wider, and no trimming inputs with addrmask.  We allow a
1513              bitfield to represent numbers in the range -2**n to
1514              2**n-1, where n is the number of bits in the field.
1515              Note that when bfd_vma is 32 bits, a 32-bit reloc can't
1516              overflow, which is exactly what we want.  */
1517           a >>= rightshift;
1518
1519           signmask = ~ fieldmask;
1520           ss = a & signmask;
1521           if (ss != 0 && ss != (((bfd_vma) -1 >> rightshift) & signmask))
1522             flag = bfd_reloc_overflow;
1523
1524           signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1525           b = (b ^ signmask) - signmask;
1526
1527           b >>= bitpos;
1528
1529           sum = a + b;
1530
1531           /* We mask with addrmask here to explicitly allow an address
1532              wrap-around.  The Linux kernel relies on it, and it is
1533              the only way to write assembler code which can run when
1534              loaded at a location 0x80000000 away from the location at
1535              which it is linked.  */
1536           signmask = fieldmask + 1;
1537           if (((~ (a ^ b)) & (a ^ sum)) & signmask & addrmask)
1538             flag = bfd_reloc_overflow;
1539
1540           break;
1541
1542         default:
1543           abort ();
1544         }
1545     }
1546
1547   /* Put RELOCATION in the right bits.  */
1548   relocation >>= (bfd_vma) rightshift;
1549   relocation <<= (bfd_vma) bitpos;
1550
1551   /* Add RELOCATION to the right bits of X.  */
1552   x = ((x & ~howto->dst_mask)
1553        | (((x & howto->src_mask) + relocation) & howto->dst_mask));
1554
1555   /* Put the relocated value back in the object file.  */
1556   switch (size)
1557     {
1558     default:
1559     case 0:
1560       abort ();
1561     case 1:
1562       bfd_put_8 (input_bfd, x, location);
1563       break;
1564     case 2:
1565       bfd_put_16 (input_bfd, x, location);
1566       break;
1567     case 4:
1568       bfd_put_32 (input_bfd, x, location);
1569       break;
1570     case 8:
1571 #ifdef BFD64
1572       bfd_put_64 (input_bfd, x, location);
1573 #else
1574       abort ();
1575 #endif
1576       break;
1577     }
1578
1579   return flag;
1580 }
1581
1582 /*
1583 DOCDD
1584 INODE
1585         howto manager,  , typedef arelent, Relocations
1586
1587 SECTION
1588         The howto manager
1589
1590         When an application wants to create a relocation, but doesn't
1591         know what the target machine might call it, it can find out by
1592         using this bit of code.
1593
1594 */
1595
1596 /*
1597 TYPEDEF
1598         bfd_reloc_code_type
1599
1600 DESCRIPTION
1601         The insides of a reloc code.  The idea is that, eventually, there
1602         will be one enumerator for every type of relocation we ever do.
1603         Pass one of these values to <<bfd_reloc_type_lookup>>, and it'll
1604         return a howto pointer.
1605
1606         This does mean that the application must determine the correct
1607         enumerator value; you can't get a howto pointer from a random set
1608         of attributes.
1609
1610 SENUM
1611    bfd_reloc_code_real
1612
1613 ENUM
1614   BFD_RELOC_64
1615 ENUMX
1616   BFD_RELOC_32
1617 ENUMX
1618   BFD_RELOC_26
1619 ENUMX
1620   BFD_RELOC_24
1621 ENUMX
1622   BFD_RELOC_16
1623 ENUMX
1624   BFD_RELOC_14
1625 ENUMX
1626   BFD_RELOC_8
1627 ENUMDOC
1628   Basic absolute relocations of N bits.
1629
1630 ENUM
1631   BFD_RELOC_64_PCREL
1632 ENUMX
1633   BFD_RELOC_32_PCREL
1634 ENUMX
1635   BFD_RELOC_24_PCREL
1636 ENUMX
1637   BFD_RELOC_16_PCREL
1638 ENUMX
1639   BFD_RELOC_12_PCREL
1640 ENUMX
1641   BFD_RELOC_8_PCREL
1642 ENUMDOC
1643   PC-relative relocations.  Sometimes these are relative to the address
1644 of the relocation itself; sometimes they are relative to the start of
1645 the section containing the relocation.  It depends on the specific target.
1646
1647 The 24-bit relocation is used in some Intel 960 configurations.
1648
1649 ENUM
1650   BFD_RELOC_32_GOT_PCREL
1651 ENUMX
1652   BFD_RELOC_16_GOT_PCREL
1653 ENUMX
1654   BFD_RELOC_8_GOT_PCREL
1655 ENUMX
1656   BFD_RELOC_32_GOTOFF
1657 ENUMX
1658   BFD_RELOC_16_GOTOFF
1659 ENUMX
1660   BFD_RELOC_LO16_GOTOFF
1661 ENUMX
1662   BFD_RELOC_HI16_GOTOFF
1663 ENUMX
1664   BFD_RELOC_HI16_S_GOTOFF
1665 ENUMX
1666   BFD_RELOC_8_GOTOFF
1667 ENUMX
1668   BFD_RELOC_64_PLT_PCREL
1669 ENUMX
1670   BFD_RELOC_32_PLT_PCREL
1671 ENUMX
1672   BFD_RELOC_24_PLT_PCREL
1673 ENUMX
1674   BFD_RELOC_16_PLT_PCREL
1675 ENUMX
1676   BFD_RELOC_8_PLT_PCREL
1677 ENUMX
1678   BFD_RELOC_64_PLTOFF
1679 ENUMX
1680   BFD_RELOC_32_PLTOFF
1681 ENUMX
1682   BFD_RELOC_16_PLTOFF
1683 ENUMX
1684   BFD_RELOC_LO16_PLTOFF
1685 ENUMX
1686   BFD_RELOC_HI16_PLTOFF
1687 ENUMX
1688   BFD_RELOC_HI16_S_PLTOFF
1689 ENUMX
1690   BFD_RELOC_8_PLTOFF
1691 ENUMDOC
1692   For ELF.
1693
1694 ENUM
1695   BFD_RELOC_68K_GLOB_DAT
1696 ENUMX
1697   BFD_RELOC_68K_JMP_SLOT
1698 ENUMX
1699   BFD_RELOC_68K_RELATIVE
1700 ENUMDOC
1701   Relocations used by 68K ELF.
1702
1703 ENUM
1704   BFD_RELOC_32_BASEREL
1705 ENUMX
1706   BFD_RELOC_16_BASEREL
1707 ENUMX
1708   BFD_RELOC_LO16_BASEREL
1709 ENUMX
1710   BFD_RELOC_HI16_BASEREL
1711 ENUMX
1712   BFD_RELOC_HI16_S_BASEREL
1713 ENUMX
1714   BFD_RELOC_8_BASEREL
1715 ENUMX
1716   BFD_RELOC_RVA
1717 ENUMDOC
1718   Linkage-table relative.
1719
1720 ENUM
1721   BFD_RELOC_8_FFnn
1722 ENUMDOC
1723   Absolute 8-bit relocation, but used to form an address like 0xFFnn.
1724
1725 ENUM
1726   BFD_RELOC_32_PCREL_S2
1727 ENUMX
1728   BFD_RELOC_16_PCREL_S2
1729 ENUMX
1730   BFD_RELOC_23_PCREL_S2
1731 ENUMDOC
1732   These PC-relative relocations are stored as word displacements --
1733 i.e., byte displacements shifted right two bits.  The 30-bit word
1734 displacement (<<32_PCREL_S2>> -- 32 bits, shifted 2) is used on the
1735 SPARC.  (SPARC tools generally refer to this as <<WDISP30>>.)  The
1736 signed 16-bit displacement is used on the MIPS, and the 23-bit
1737 displacement is used on the Alpha.
1738
1739 ENUM
1740   BFD_RELOC_HI22
1741 ENUMX
1742   BFD_RELOC_LO10
1743 ENUMDOC
1744   High 22 bits and low 10 bits of 32-bit value, placed into lower bits of
1745 the target word.  These are used on the SPARC.
1746
1747 ENUM
1748   BFD_RELOC_GPREL16
1749 ENUMX
1750   BFD_RELOC_GPREL32
1751 ENUMDOC
1752   For systems that allocate a Global Pointer register, these are
1753 displacements off that register.  These relocation types are
1754 handled specially, because the value the register will have is
1755 decided relatively late.
1756
1757 ENUM
1758   BFD_RELOC_I960_CALLJ
1759 ENUMDOC
1760   Reloc types used for i960/b.out.
1761
1762 ENUM
1763   BFD_RELOC_NONE
1764 ENUMX
1765   BFD_RELOC_SPARC_WDISP22
1766 ENUMX
1767   BFD_RELOC_SPARC22
1768 ENUMX
1769   BFD_RELOC_SPARC13
1770 ENUMX
1771   BFD_RELOC_SPARC_GOT10
1772 ENUMX
1773   BFD_RELOC_SPARC_GOT13
1774 ENUMX
1775   BFD_RELOC_SPARC_GOT22
1776 ENUMX
1777   BFD_RELOC_SPARC_PC10
1778 ENUMX
1779   BFD_RELOC_SPARC_PC22
1780 ENUMX
1781   BFD_RELOC_SPARC_WPLT30
1782 ENUMX
1783   BFD_RELOC_SPARC_COPY
1784 ENUMX
1785   BFD_RELOC_SPARC_GLOB_DAT
1786 ENUMX
1787   BFD_RELOC_SPARC_JMP_SLOT
1788 ENUMX
1789   BFD_RELOC_SPARC_RELATIVE
1790 ENUMX
1791   BFD_RELOC_SPARC_UA16
1792 ENUMX
1793   BFD_RELOC_SPARC_UA32
1794 ENUMX
1795   BFD_RELOC_SPARC_UA64
1796 ENUMDOC
1797   SPARC ELF relocations.  There is probably some overlap with other
1798   relocation types already defined.
1799
1800 ENUM
1801   BFD_RELOC_SPARC_BASE13
1802 ENUMX
1803   BFD_RELOC_SPARC_BASE22
1804 ENUMDOC
1805   I think these are specific to SPARC a.out (e.g., Sun 4).
1806
1807 ENUMEQ
1808   BFD_RELOC_SPARC_64
1809   BFD_RELOC_64
1810 ENUMX
1811   BFD_RELOC_SPARC_10
1812 ENUMX
1813   BFD_RELOC_SPARC_11
1814 ENUMX
1815   BFD_RELOC_SPARC_OLO10
1816 ENUMX
1817   BFD_RELOC_SPARC_HH22
1818 ENUMX
1819   BFD_RELOC_SPARC_HM10
1820 ENUMX
1821   BFD_RELOC_SPARC_LM22
1822 ENUMX
1823   BFD_RELOC_SPARC_PC_HH22
1824 ENUMX
1825   BFD_RELOC_SPARC_PC_HM10
1826 ENUMX
1827   BFD_RELOC_SPARC_PC_LM22
1828 ENUMX
1829   BFD_RELOC_SPARC_WDISP16
1830 ENUMX
1831   BFD_RELOC_SPARC_WDISP19
1832 ENUMX
1833   BFD_RELOC_SPARC_7
1834 ENUMX
1835   BFD_RELOC_SPARC_6
1836 ENUMX
1837   BFD_RELOC_SPARC_5
1838 ENUMEQX
1839   BFD_RELOC_SPARC_DISP64
1840   BFD_RELOC_64_PCREL
1841 ENUMX
1842   BFD_RELOC_SPARC_PLT32
1843 ENUMX
1844   BFD_RELOC_SPARC_PLT64
1845 ENUMX
1846   BFD_RELOC_SPARC_HIX22
1847 ENUMX
1848   BFD_RELOC_SPARC_LOX10
1849 ENUMX
1850   BFD_RELOC_SPARC_H44
1851 ENUMX
1852   BFD_RELOC_SPARC_M44
1853 ENUMX
1854   BFD_RELOC_SPARC_L44
1855 ENUMX
1856   BFD_RELOC_SPARC_REGISTER
1857 ENUMDOC
1858   SPARC64 relocations
1859
1860 ENUM
1861   BFD_RELOC_SPARC_REV32
1862 ENUMDOC
1863   SPARC little endian relocation
1864 ENUM
1865   BFD_RELOC_SPARC_TLS_GD_HI22
1866 ENUMX
1867   BFD_RELOC_SPARC_TLS_GD_LO10
1868 ENUMX
1869   BFD_RELOC_SPARC_TLS_GD_ADD
1870 ENUMX
1871   BFD_RELOC_SPARC_TLS_GD_CALL
1872 ENUMX
1873   BFD_RELOC_SPARC_TLS_LDM_HI22
1874 ENUMX
1875   BFD_RELOC_SPARC_TLS_LDM_LO10
1876 ENUMX
1877   BFD_RELOC_SPARC_TLS_LDM_ADD
1878 ENUMX
1879   BFD_RELOC_SPARC_TLS_LDM_CALL
1880 ENUMX
1881   BFD_RELOC_SPARC_TLS_LDO_HIX22
1882 ENUMX
1883   BFD_RELOC_SPARC_TLS_LDO_LOX10
1884 ENUMX
1885   BFD_RELOC_SPARC_TLS_LDO_ADD
1886 ENUMX
1887   BFD_RELOC_SPARC_TLS_IE_HI22
1888 ENUMX
1889   BFD_RELOC_SPARC_TLS_IE_LO10
1890 ENUMX
1891   BFD_RELOC_SPARC_TLS_IE_LD
1892 ENUMX
1893   BFD_RELOC_SPARC_TLS_IE_LDX
1894 ENUMX
1895   BFD_RELOC_SPARC_TLS_IE_ADD
1896 ENUMX
1897   BFD_RELOC_SPARC_TLS_LE_HIX22
1898 ENUMX
1899   BFD_RELOC_SPARC_TLS_LE_LOX10
1900 ENUMX
1901   BFD_RELOC_SPARC_TLS_DTPMOD32
1902 ENUMX
1903   BFD_RELOC_SPARC_TLS_DTPMOD64
1904 ENUMX
1905   BFD_RELOC_SPARC_TLS_DTPOFF32
1906 ENUMX
1907   BFD_RELOC_SPARC_TLS_DTPOFF64
1908 ENUMX
1909   BFD_RELOC_SPARC_TLS_TPOFF32
1910 ENUMX
1911   BFD_RELOC_SPARC_TLS_TPOFF64
1912 ENUMDOC
1913   SPARC TLS relocations
1914
1915 ENUM
1916   BFD_RELOC_ALPHA_GPDISP_HI16
1917 ENUMDOC
1918   Alpha ECOFF and ELF relocations.  Some of these treat the symbol or
1919      "addend" in some special way.
1920   For GPDISP_HI16 ("gpdisp") relocations, the symbol is ignored when
1921      writing; when reading, it will be the absolute section symbol.  The
1922      addend is the displacement in bytes of the "lda" instruction from
1923      the "ldah" instruction (which is at the address of this reloc).
1924 ENUM
1925   BFD_RELOC_ALPHA_GPDISP_LO16
1926 ENUMDOC
1927   For GPDISP_LO16 ("ignore") relocations, the symbol is handled as
1928      with GPDISP_HI16 relocs.  The addend is ignored when writing the
1929      relocations out, and is filled in with the file's GP value on
1930      reading, for convenience.
1931
1932 ENUM
1933   BFD_RELOC_ALPHA_GPDISP
1934 ENUMDOC
1935   The ELF GPDISP relocation is exactly the same as the GPDISP_HI16
1936      relocation except that there is no accompanying GPDISP_LO16
1937      relocation.
1938
1939 ENUM
1940   BFD_RELOC_ALPHA_LITERAL
1941 ENUMX
1942   BFD_RELOC_ALPHA_ELF_LITERAL
1943 ENUMX
1944   BFD_RELOC_ALPHA_LITUSE
1945 ENUMDOC
1946   The Alpha LITERAL/LITUSE relocs are produced by a symbol reference;
1947      the assembler turns it into a LDQ instruction to load the address of
1948      the symbol, and then fills in a register in the real instruction.
1949
1950      The LITERAL reloc, at the LDQ instruction, refers to the .lita
1951      section symbol.  The addend is ignored when writing, but is filled
1952      in with the file's GP value on reading, for convenience, as with the
1953      GPDISP_LO16 reloc.
1954
1955      The ELF_LITERAL reloc is somewhere between 16_GOTOFF and GPDISP_LO16.
1956      It should refer to the symbol to be referenced, as with 16_GOTOFF,
1957      but it generates output not based on the position within the .got
1958      section, but relative to the GP value chosen for the file during the
1959      final link stage.
1960
1961      The LITUSE reloc, on the instruction using the loaded address, gives
1962      information to the linker that it might be able to use to optimize
1963      away some literal section references.  The symbol is ignored (read
1964      as the absolute section symbol), and the "addend" indicates the type
1965      of instruction using the register:
1966               1 - "memory" fmt insn
1967               2 - byte-manipulation (byte offset reg)
1968               3 - jsr (target of branch)
1969
1970 ENUM
1971   BFD_RELOC_ALPHA_HINT
1972 ENUMDOC
1973   The HINT relocation indicates a value that should be filled into the
1974      "hint" field of a jmp/jsr/ret instruction, for possible branch-
1975      prediction logic which may be provided on some processors.
1976
1977 ENUM
1978   BFD_RELOC_ALPHA_LINKAGE
1979 ENUMDOC
1980   The LINKAGE relocation outputs a linkage pair in the object file,
1981      which is filled by the linker.
1982
1983 ENUM
1984   BFD_RELOC_ALPHA_CODEADDR
1985 ENUMDOC
1986   The CODEADDR relocation outputs a STO_CA in the object file,
1987      which is filled by the linker.
1988
1989 ENUM
1990   BFD_RELOC_ALPHA_GPREL_HI16
1991 ENUMX
1992   BFD_RELOC_ALPHA_GPREL_LO16
1993 ENUMDOC
1994   The GPREL_HI/LO relocations together form a 32-bit offset from the
1995      GP register.
1996
1997 ENUM
1998   BFD_RELOC_ALPHA_BRSGP
1999 ENUMDOC
2000   Like BFD_RELOC_23_PCREL_S2, except that the source and target must
2001   share a common GP, and the target address is adjusted for
2002   STO_ALPHA_STD_GPLOAD.
2003
2004 ENUM
2005   BFD_RELOC_ALPHA_TLSGD
2006 ENUMX
2007   BFD_RELOC_ALPHA_TLSLDM
2008 ENUMX
2009   BFD_RELOC_ALPHA_DTPMOD64
2010 ENUMX
2011   BFD_RELOC_ALPHA_GOTDTPREL16
2012 ENUMX
2013   BFD_RELOC_ALPHA_DTPREL64
2014 ENUMX
2015   BFD_RELOC_ALPHA_DTPREL_HI16
2016 ENUMX
2017   BFD_RELOC_ALPHA_DTPREL_LO16
2018 ENUMX
2019   BFD_RELOC_ALPHA_DTPREL16
2020 ENUMX
2021   BFD_RELOC_ALPHA_GOTTPREL16
2022 ENUMX
2023   BFD_RELOC_ALPHA_TPREL64
2024 ENUMX
2025   BFD_RELOC_ALPHA_TPREL_HI16
2026 ENUMX
2027   BFD_RELOC_ALPHA_TPREL_LO16
2028 ENUMX
2029   BFD_RELOC_ALPHA_TPREL16
2030 ENUMDOC
2031   Alpha thread-local storage relocations.
2032
2033 ENUM
2034   BFD_RELOC_MIPS_JMP
2035 ENUMDOC
2036   Bits 27..2 of the relocation address shifted right 2 bits;
2037      simple reloc otherwise.
2038
2039 ENUM
2040   BFD_RELOC_MIPS16_JMP
2041 ENUMDOC
2042   The MIPS16 jump instruction.
2043
2044 ENUM
2045   BFD_RELOC_MIPS16_GPREL
2046 ENUMDOC
2047   MIPS16 GP relative reloc.
2048
2049 ENUM
2050   BFD_RELOC_HI16
2051 ENUMDOC
2052   High 16 bits of 32-bit value; simple reloc.
2053 ENUM
2054   BFD_RELOC_HI16_S
2055 ENUMDOC
2056   High 16 bits of 32-bit value but the low 16 bits will be sign
2057      extended and added to form the final result.  If the low 16
2058      bits form a negative number, we need to add one to the high value
2059      to compensate for the borrow when the low bits are added.
2060 ENUM
2061   BFD_RELOC_LO16
2062 ENUMDOC
2063   Low 16 bits.
2064 ENUM
2065   BFD_RELOC_PCREL_HI16_S
2066 ENUMDOC
2067   Like BFD_RELOC_HI16_S, but PC relative.
2068 ENUM
2069   BFD_RELOC_PCREL_LO16
2070 ENUMDOC
2071   Like BFD_RELOC_LO16, but PC relative.
2072
2073 ENUM
2074   BFD_RELOC_MIPS_LITERAL
2075 ENUMDOC
2076   Relocation against a MIPS literal section.
2077
2078 ENUM
2079   BFD_RELOC_MIPS_GOT16
2080 ENUMX
2081   BFD_RELOC_MIPS_CALL16
2082 ENUMX
2083   BFD_RELOC_MIPS_GOT_HI16
2084 ENUMX
2085   BFD_RELOC_MIPS_GOT_LO16
2086 ENUMX
2087   BFD_RELOC_MIPS_CALL_HI16
2088 ENUMX
2089   BFD_RELOC_MIPS_CALL_LO16
2090 ENUMX
2091   BFD_RELOC_MIPS_SUB
2092 ENUMX
2093   BFD_RELOC_MIPS_GOT_PAGE
2094 ENUMX
2095   BFD_RELOC_MIPS_GOT_OFST
2096 ENUMX
2097   BFD_RELOC_MIPS_GOT_DISP
2098 ENUMX
2099   BFD_RELOC_MIPS_SHIFT5
2100 ENUMX
2101   BFD_RELOC_MIPS_SHIFT6
2102 ENUMX
2103   BFD_RELOC_MIPS_INSERT_A
2104 ENUMX
2105   BFD_RELOC_MIPS_INSERT_B
2106 ENUMX
2107   BFD_RELOC_MIPS_DELETE
2108 ENUMX
2109   BFD_RELOC_MIPS_HIGHEST
2110 ENUMX
2111   BFD_RELOC_MIPS_HIGHER
2112 ENUMX
2113   BFD_RELOC_MIPS_SCN_DISP
2114 ENUMX
2115   BFD_RELOC_MIPS_REL16
2116 ENUMX
2117   BFD_RELOC_MIPS_RELGOT
2118 ENUMX
2119   BFD_RELOC_MIPS_JALR
2120 ENUMDOC
2121   MIPS ELF relocations.
2122 COMMENT
2123
2124 ENUM
2125   BFD_RELOC_FRV_LABEL16
2126 ENUMX
2127   BFD_RELOC_FRV_LABEL24
2128 ENUMX
2129   BFD_RELOC_FRV_LO16
2130 ENUMX
2131   BFD_RELOC_FRV_HI16
2132 ENUMX
2133   BFD_RELOC_FRV_GPREL12
2134 ENUMX
2135   BFD_RELOC_FRV_GPRELU12
2136 ENUMX
2137   BFD_RELOC_FRV_GPREL32
2138 ENUMX
2139   BFD_RELOC_FRV_GPRELHI
2140 ENUMX
2141   BFD_RELOC_FRV_GPRELLO
2142 ENUMDOC
2143   Fujitsu Frv Relocations.
2144 COMMENT
2145
2146 ENUM
2147   BFD_RELOC_MN10300_GOTOFF24
2148 ENUMDOC
2149   This is a 24bit GOT-relative reloc for the mn10300.
2150 ENUM
2151   BFD_RELOC_MN10300_GOT32
2152 ENUMDOC
2153   This is a 32bit GOT-relative reloc for the mn10300, offset by two bytes
2154   in the instruction.
2155 ENUM
2156   BFD_RELOC_MN10300_GOT24
2157 ENUMDOC
2158   This is a 24bit GOT-relative reloc for the mn10300, offset by two bytes
2159   in the instruction.
2160 ENUM
2161   BFD_RELOC_MN10300_GOT16
2162 ENUMDOC
2163   This is a 16bit GOT-relative reloc for the mn10300, offset by two bytes
2164   in the instruction.
2165 ENUM
2166   BFD_RELOC_MN10300_COPY
2167 ENUMDOC
2168   Copy symbol at runtime.
2169 ENUM
2170   BFD_RELOC_MN10300_GLOB_DAT
2171 ENUMDOC
2172   Create GOT entry.
2173 ENUM
2174   BFD_RELOC_MN10300_JMP_SLOT
2175 ENUMDOC
2176   Create PLT entry.
2177 ENUM
2178   BFD_RELOC_MN10300_RELATIVE
2179 ENUMDOC
2180   Adjust by program base.
2181 COMMENT
2182
2183 ENUM
2184   BFD_RELOC_386_GOT32
2185 ENUMX
2186   BFD_RELOC_386_PLT32
2187 ENUMX
2188   BFD_RELOC_386_COPY
2189 ENUMX
2190   BFD_RELOC_386_GLOB_DAT
2191 ENUMX
2192   BFD_RELOC_386_JUMP_SLOT
2193 ENUMX
2194   BFD_RELOC_386_RELATIVE
2195 ENUMX
2196   BFD_RELOC_386_GOTOFF
2197 ENUMX
2198   BFD_RELOC_386_GOTPC
2199 ENUMX
2200   BFD_RELOC_386_TLS_TPOFF
2201 ENUMX
2202   BFD_RELOC_386_TLS_IE
2203 ENUMX
2204   BFD_RELOC_386_TLS_GOTIE
2205 ENUMX
2206   BFD_RELOC_386_TLS_LE
2207 ENUMX
2208   BFD_RELOC_386_TLS_GD
2209 ENUMX
2210   BFD_RELOC_386_TLS_LDM
2211 ENUMX
2212   BFD_RELOC_386_TLS_LDO_32
2213 ENUMX
2214   BFD_RELOC_386_TLS_IE_32
2215 ENUMX
2216   BFD_RELOC_386_TLS_LE_32
2217 ENUMX
2218   BFD_RELOC_386_TLS_DTPMOD32
2219 ENUMX
2220   BFD_RELOC_386_TLS_DTPOFF32
2221 ENUMX
2222   BFD_RELOC_386_TLS_TPOFF32
2223 ENUMDOC
2224   i386/elf relocations
2225
2226 ENUM
2227   BFD_RELOC_X86_64_GOT32
2228 ENUMX
2229   BFD_RELOC_X86_64_PLT32
2230 ENUMX
2231   BFD_RELOC_X86_64_COPY
2232 ENUMX
2233   BFD_RELOC_X86_64_GLOB_DAT
2234 ENUMX
2235   BFD_RELOC_X86_64_JUMP_SLOT
2236 ENUMX
2237   BFD_RELOC_X86_64_RELATIVE
2238 ENUMX
2239   BFD_RELOC_X86_64_GOTPCREL
2240 ENUMX
2241   BFD_RELOC_X86_64_32S
2242 ENUMX
2243   BFD_RELOC_X86_64_DTPMOD64
2244 ENUMX
2245   BFD_RELOC_X86_64_DTPOFF64
2246 ENUMX
2247   BFD_RELOC_X86_64_TPOFF64
2248 ENUMX
2249   BFD_RELOC_X86_64_TLSGD
2250 ENUMX
2251   BFD_RELOC_X86_64_TLSLD
2252 ENUMX
2253   BFD_RELOC_X86_64_DTPOFF32
2254 ENUMX
2255   BFD_RELOC_X86_64_GOTTPOFF
2256 ENUMX
2257   BFD_RELOC_X86_64_TPOFF32
2258 ENUMDOC
2259   x86-64/elf relocations
2260
2261 ENUM
2262   BFD_RELOC_NS32K_IMM_8
2263 ENUMX
2264   BFD_RELOC_NS32K_IMM_16
2265 ENUMX
2266   BFD_RELOC_NS32K_IMM_32
2267 ENUMX
2268   BFD_RELOC_NS32K_IMM_8_PCREL
2269 ENUMX
2270   BFD_RELOC_NS32K_IMM_16_PCREL
2271 ENUMX
2272   BFD_RELOC_NS32K_IMM_32_PCREL
2273 ENUMX
2274   BFD_RELOC_NS32K_DISP_8
2275 ENUMX
2276   BFD_RELOC_NS32K_DISP_16
2277 ENUMX
2278   BFD_RELOC_NS32K_DISP_32
2279 ENUMX
2280   BFD_RELOC_NS32K_DISP_8_PCREL
2281 ENUMX
2282   BFD_RELOC_NS32K_DISP_16_PCREL
2283 ENUMX
2284   BFD_RELOC_NS32K_DISP_32_PCREL
2285 ENUMDOC
2286   ns32k relocations
2287
2288 ENUM
2289   BFD_RELOC_PDP11_DISP_8_PCREL
2290 ENUMX
2291   BFD_RELOC_PDP11_DISP_6_PCREL
2292 ENUMDOC
2293   PDP11 relocations
2294
2295 ENUM
2296   BFD_RELOC_PJ_CODE_HI16
2297 ENUMX
2298   BFD_RELOC_PJ_CODE_LO16
2299 ENUMX
2300   BFD_RELOC_PJ_CODE_DIR16
2301 ENUMX
2302   BFD_RELOC_PJ_CODE_DIR32
2303 ENUMX
2304   BFD_RELOC_PJ_CODE_REL16
2305 ENUMX
2306   BFD_RELOC_PJ_CODE_REL32
2307 ENUMDOC
2308   Picojava relocs.  Not all of these appear in object files.
2309
2310 ENUM
2311   BFD_RELOC_PPC_B26
2312 ENUMX
2313   BFD_RELOC_PPC_BA26
2314 ENUMX
2315   BFD_RELOC_PPC_TOC16
2316 ENUMX
2317   BFD_RELOC_PPC_B16
2318 ENUMX
2319   BFD_RELOC_PPC_B16_BRTAKEN
2320 ENUMX
2321   BFD_RELOC_PPC_B16_BRNTAKEN
2322 ENUMX
2323   BFD_RELOC_PPC_BA16
2324 ENUMX
2325   BFD_RELOC_PPC_BA16_BRTAKEN
2326 ENUMX
2327   BFD_RELOC_PPC_BA16_BRNTAKEN
2328 ENUMX
2329   BFD_RELOC_PPC_COPY
2330 ENUMX
2331   BFD_RELOC_PPC_GLOB_DAT
2332 ENUMX
2333   BFD_RELOC_PPC_JMP_SLOT
2334 ENUMX
2335   BFD_RELOC_PPC_RELATIVE
2336 ENUMX
2337   BFD_RELOC_PPC_LOCAL24PC
2338 ENUMX
2339   BFD_RELOC_PPC_EMB_NADDR32
2340 ENUMX
2341   BFD_RELOC_PPC_EMB_NADDR16
2342 ENUMX
2343   BFD_RELOC_PPC_EMB_NADDR16_LO
2344 ENUMX
2345   BFD_RELOC_PPC_EMB_NADDR16_HI
2346 ENUMX
2347   BFD_RELOC_PPC_EMB_NADDR16_HA
2348 ENUMX
2349   BFD_RELOC_PPC_EMB_SDAI16
2350 ENUMX
2351   BFD_RELOC_PPC_EMB_SDA2I16
2352 ENUMX
2353   BFD_RELOC_PPC_EMB_SDA2REL
2354 ENUMX
2355   BFD_RELOC_PPC_EMB_SDA21
2356 ENUMX
2357   BFD_RELOC_PPC_EMB_MRKREF
2358 ENUMX
2359   BFD_RELOC_PPC_EMB_RELSEC16
2360 ENUMX
2361   BFD_RELOC_PPC_EMB_RELST_LO
2362 ENUMX
2363   BFD_RELOC_PPC_EMB_RELST_HI
2364 ENUMX
2365   BFD_RELOC_PPC_EMB_RELST_HA
2366 ENUMX
2367   BFD_RELOC_PPC_EMB_BIT_FLD
2368 ENUMX
2369   BFD_RELOC_PPC_EMB_RELSDA
2370 ENUMX
2371   BFD_RELOC_PPC64_HIGHER
2372 ENUMX
2373   BFD_RELOC_PPC64_HIGHER_S
2374 ENUMX
2375   BFD_RELOC_PPC64_HIGHEST
2376 ENUMX
2377   BFD_RELOC_PPC64_HIGHEST_S
2378 ENUMX
2379   BFD_RELOC_PPC64_TOC16_LO
2380 ENUMX
2381   BFD_RELOC_PPC64_TOC16_HI
2382 ENUMX
2383   BFD_RELOC_PPC64_TOC16_HA
2384 ENUMX
2385   BFD_RELOC_PPC64_TOC
2386 ENUMX
2387   BFD_RELOC_PPC64_PLTGOT16
2388 ENUMX
2389   BFD_RELOC_PPC64_PLTGOT16_LO
2390 ENUMX
2391   BFD_RELOC_PPC64_PLTGOT16_HI
2392 ENUMX
2393   BFD_RELOC_PPC64_PLTGOT16_HA
2394 ENUMX
2395   BFD_RELOC_PPC64_ADDR16_DS
2396 ENUMX
2397   BFD_RELOC_PPC64_ADDR16_LO_DS
2398 ENUMX
2399   BFD_RELOC_PPC64_GOT16_DS
2400 ENUMX
2401   BFD_RELOC_PPC64_GOT16_LO_DS
2402 ENUMX
2403   BFD_RELOC_PPC64_PLT16_LO_DS
2404 ENUMX
2405   BFD_RELOC_PPC64_SECTOFF_DS
2406 ENUMX
2407   BFD_RELOC_PPC64_SECTOFF_LO_DS
2408 ENUMX
2409   BFD_RELOC_PPC64_TOC16_DS
2410 ENUMX
2411   BFD_RELOC_PPC64_TOC16_LO_DS
2412 ENUMX
2413   BFD_RELOC_PPC64_PLTGOT16_DS
2414 ENUMX
2415   BFD_RELOC_PPC64_PLTGOT16_LO_DS
2416 ENUMDOC
2417   Power(rs6000) and PowerPC relocations.
2418
2419 ENUM
2420   BFD_RELOC_PPC_TLS
2421 ENUMX
2422   BFD_RELOC_PPC_DTPMOD
2423 ENUMX
2424   BFD_RELOC_PPC_TPREL16
2425 ENUMX
2426   BFD_RELOC_PPC_TPREL16_LO
2427 ENUMX
2428   BFD_RELOC_PPC_TPREL16_HI
2429 ENUMX
2430   BFD_RELOC_PPC_TPREL16_HA
2431 ENUMX
2432   BFD_RELOC_PPC_TPREL
2433 ENUMX
2434   BFD_RELOC_PPC_DTPREL16
2435 ENUMX
2436   BFD_RELOC_PPC_DTPREL16_LO
2437 ENUMX
2438   BFD_RELOC_PPC_DTPREL16_HI
2439 ENUMX
2440   BFD_RELOC_PPC_DTPREL16_HA
2441 ENUMX
2442   BFD_RELOC_PPC_DTPREL
2443 ENUMX
2444   BFD_RELOC_PPC_GOT_TLSGD16
2445 ENUMX
2446   BFD_RELOC_PPC_GOT_TLSGD16_LO
2447 ENUMX
2448   BFD_RELOC_PPC_GOT_TLSGD16_HI
2449 ENUMX
2450   BFD_RELOC_PPC_GOT_TLSGD16_HA
2451 ENUMX
2452   BFD_RELOC_PPC_GOT_TLSLD16
2453 ENUMX
2454   BFD_RELOC_PPC_GOT_TLSLD16_LO
2455 ENUMX
2456   BFD_RELOC_PPC_GOT_TLSLD16_HI
2457 ENUMX
2458   BFD_RELOC_PPC_GOT_TLSLD16_HA
2459 ENUMX
2460   BFD_RELOC_PPC_GOT_TPREL16
2461 ENUMX
2462   BFD_RELOC_PPC_GOT_TPREL16_LO
2463 ENUMX
2464   BFD_RELOC_PPC_GOT_TPREL16_HI
2465 ENUMX
2466   BFD_RELOC_PPC_GOT_TPREL16_HA
2467 ENUMX
2468   BFD_RELOC_PPC_GOT_DTPREL16
2469 ENUMX
2470   BFD_RELOC_PPC_GOT_DTPREL16_LO
2471 ENUMX
2472   BFD_RELOC_PPC_GOT_DTPREL16_HI
2473 ENUMX
2474   BFD_RELOC_PPC_GOT_DTPREL16_HA
2475 ENUMX
2476   BFD_RELOC_PPC64_TPREL16_DS
2477 ENUMX
2478   BFD_RELOC_PPC64_TPREL16_LO_DS
2479 ENUMX
2480   BFD_RELOC_PPC64_TPREL16_HIGHER
2481 ENUMX
2482   BFD_RELOC_PPC64_TPREL16_HIGHERA
2483 ENUMX
2484   BFD_RELOC_PPC64_TPREL16_HIGHEST
2485 ENUMX
2486   BFD_RELOC_PPC64_TPREL16_HIGHESTA
2487 ENUMX
2488   BFD_RELOC_PPC64_DTPREL16_DS
2489 ENUMX
2490   BFD_RELOC_PPC64_DTPREL16_LO_DS
2491 ENUMX
2492   BFD_RELOC_PPC64_DTPREL16_HIGHER
2493 ENUMX
2494   BFD_RELOC_PPC64_DTPREL16_HIGHERA
2495 ENUMX
2496   BFD_RELOC_PPC64_DTPREL16_HIGHEST
2497 ENUMX
2498   BFD_RELOC_PPC64_DTPREL16_HIGHESTA
2499 ENUMDOC
2500   PowerPC and PowerPC64 thread-local storage relocations.
2501
2502 ENUM
2503   BFD_RELOC_I370_D12
2504 ENUMDOC
2505   IBM 370/390 relocations
2506
2507 ENUM
2508   BFD_RELOC_CTOR
2509 ENUMDOC
2510   The type of reloc used to build a contructor table - at the moment
2511   probably a 32 bit wide absolute relocation, but the target can choose.
2512   It generally does map to one of the other relocation types.
2513
2514 ENUM
2515   BFD_RELOC_ARM_PCREL_BRANCH
2516 ENUMDOC
2517   ARM 26 bit pc-relative branch.  The lowest two bits must be zero and are
2518   not stored in the instruction.
2519 ENUM
2520   BFD_RELOC_ARM_PCREL_BLX
2521 ENUMDOC
2522   ARM 26 bit pc-relative branch.  The lowest bit must be zero and is
2523   not stored in the instruction.  The 2nd lowest bit comes from a 1 bit
2524   field in the instruction.
2525 ENUM
2526   BFD_RELOC_THUMB_PCREL_BLX
2527 ENUMDOC
2528   Thumb 22 bit pc-relative branch.  The lowest bit must be zero and is
2529   not stored in the instruction.  The 2nd lowest bit comes from a 1 bit
2530   field in the instruction.
2531 ENUM
2532   BFD_RELOC_ARM_IMMEDIATE
2533 ENUMX
2534   BFD_RELOC_ARM_ADRL_IMMEDIATE
2535 ENUMX
2536   BFD_RELOC_ARM_OFFSET_IMM
2537 ENUMX
2538   BFD_RELOC_ARM_SHIFT_IMM
2539 ENUMX
2540   BFD_RELOC_ARM_SWI
2541 ENUMX
2542   BFD_RELOC_ARM_MULTI
2543 ENUMX
2544   BFD_RELOC_ARM_CP_OFF_IMM
2545 ENUMX
2546   BFD_RELOC_ARM_CP_OFF_IMM_S2
2547 ENUMX
2548   BFD_RELOC_ARM_ADR_IMM
2549 ENUMX
2550   BFD_RELOC_ARM_LDR_IMM
2551 ENUMX
2552   BFD_RELOC_ARM_LITERAL
2553 ENUMX
2554   BFD_RELOC_ARM_IN_POOL
2555 ENUMX
2556   BFD_RELOC_ARM_OFFSET_IMM8
2557 ENUMX
2558   BFD_RELOC_ARM_HWLITERAL
2559 ENUMX
2560   BFD_RELOC_ARM_THUMB_ADD
2561 ENUMX
2562   BFD_RELOC_ARM_THUMB_IMM
2563 ENUMX
2564   BFD_RELOC_ARM_THUMB_SHIFT
2565 ENUMX
2566   BFD_RELOC_ARM_THUMB_OFFSET
2567 ENUMX
2568   BFD_RELOC_ARM_GOT12
2569 ENUMX
2570   BFD_RELOC_ARM_GOT32
2571 ENUMX
2572   BFD_RELOC_ARM_JUMP_SLOT
2573 ENUMX
2574   BFD_RELOC_ARM_COPY
2575 ENUMX
2576   BFD_RELOC_ARM_GLOB_DAT
2577 ENUMX
2578   BFD_RELOC_ARM_PLT32
2579 ENUMX
2580   BFD_RELOC_ARM_RELATIVE
2581 ENUMX
2582   BFD_RELOC_ARM_GOTOFF
2583 ENUMX
2584   BFD_RELOC_ARM_GOTPC
2585 ENUMDOC
2586   These relocs are only used within the ARM assembler.  They are not
2587   (at present) written to any object files.
2588
2589 ENUM
2590   BFD_RELOC_SH_PCDISP8BY2
2591 ENUMX
2592   BFD_RELOC_SH_PCDISP12BY2
2593 ENUMX
2594   BFD_RELOC_SH_IMM4
2595 ENUMX
2596   BFD_RELOC_SH_IMM4BY2
2597 ENUMX
2598   BFD_RELOC_SH_IMM4BY4
2599 ENUMX
2600   BFD_RELOC_SH_IMM8
2601 ENUMX
2602   BFD_RELOC_SH_IMM8BY2
2603 ENUMX
2604   BFD_RELOC_SH_IMM8BY4
2605 ENUMX
2606   BFD_RELOC_SH_PCRELIMM8BY2
2607 ENUMX
2608   BFD_RELOC_SH_PCRELIMM8BY4
2609 ENUMX
2610   BFD_RELOC_SH_SWITCH16
2611 ENUMX
2612   BFD_RELOC_SH_SWITCH32
2613 ENUMX
2614   BFD_RELOC_SH_USES
2615 ENUMX
2616   BFD_RELOC_SH_COUNT
2617 ENUMX
2618   BFD_RELOC_SH_ALIGN
2619 ENUMX
2620   BFD_RELOC_SH_CODE
2621 ENUMX
2622   BFD_RELOC_SH_DATA
2623 ENUMX
2624   BFD_RELOC_SH_LABEL
2625 ENUMX
2626   BFD_RELOC_SH_LOOP_START
2627 ENUMX
2628   BFD_RELOC_SH_LOOP_END
2629 ENUMX
2630   BFD_RELOC_SH_COPY
2631 ENUMX
2632   BFD_RELOC_SH_GLOB_DAT
2633 ENUMX
2634   BFD_RELOC_SH_JMP_SLOT
2635 ENUMX
2636   BFD_RELOC_SH_RELATIVE
2637 ENUMX
2638   BFD_RELOC_SH_GOTPC
2639 ENUMX
2640   BFD_RELOC_SH_GOT_LOW16
2641 ENUMX
2642   BFD_RELOC_SH_GOT_MEDLOW16
2643 ENUMX
2644   BFD_RELOC_SH_GOT_MEDHI16
2645 ENUMX
2646   BFD_RELOC_SH_GOT_HI16
2647 ENUMX
2648   BFD_RELOC_SH_GOTPLT_LOW16
2649 ENUMX
2650   BFD_RELOC_SH_GOTPLT_MEDLOW16
2651 ENUMX
2652   BFD_RELOC_SH_GOTPLT_MEDHI16
2653 ENUMX
2654   BFD_RELOC_SH_GOTPLT_HI16
2655 ENUMX
2656   BFD_RELOC_SH_PLT_LOW16
2657 ENUMX
2658   BFD_RELOC_SH_PLT_MEDLOW16
2659 ENUMX
2660   BFD_RELOC_SH_PLT_MEDHI16
2661 ENUMX
2662   BFD_RELOC_SH_PLT_HI16
2663 ENUMX
2664   BFD_RELOC_SH_GOTOFF_LOW16
2665 ENUMX
2666   BFD_RELOC_SH_GOTOFF_MEDLOW16
2667 ENUMX
2668   BFD_RELOC_SH_GOTOFF_MEDHI16
2669 ENUMX
2670   BFD_RELOC_SH_GOTOFF_HI16
2671 ENUMX
2672   BFD_RELOC_SH_GOTPC_LOW16
2673 ENUMX
2674   BFD_RELOC_SH_GOTPC_MEDLOW16
2675 ENUMX
2676   BFD_RELOC_SH_GOTPC_MEDHI16
2677 ENUMX
2678   BFD_RELOC_SH_GOTPC_HI16
2679 ENUMX
2680   BFD_RELOC_SH_COPY64
2681 ENUMX
2682   BFD_RELOC_SH_GLOB_DAT64
2683 ENUMX
2684   BFD_RELOC_SH_JMP_SLOT64
2685 ENUMX
2686   BFD_RELOC_SH_RELATIVE64
2687 ENUMX
2688   BFD_RELOC_SH_GOT10BY4
2689 ENUMX
2690   BFD_RELOC_SH_GOT10BY8
2691 ENUMX
2692   BFD_RELOC_SH_GOTPLT10BY4
2693 ENUMX
2694   BFD_RELOC_SH_GOTPLT10BY8
2695 ENUMX
2696   BFD_RELOC_SH_GOTPLT32
2697 ENUMX
2698   BFD_RELOC_SH_SHMEDIA_CODE
2699 ENUMX
2700   BFD_RELOC_SH_IMMU5
2701 ENUMX
2702   BFD_RELOC_SH_IMMS6
2703 ENUMX
2704   BFD_RELOC_SH_IMMS6BY32
2705 ENUMX
2706   BFD_RELOC_SH_IMMU6
2707 ENUMX
2708   BFD_RELOC_SH_IMMS10
2709 ENUMX
2710   BFD_RELOC_SH_IMMS10BY2
2711 ENUMX
2712   BFD_RELOC_SH_IMMS10BY4
2713 ENUMX
2714   BFD_RELOC_SH_IMMS10BY8
2715 ENUMX
2716   BFD_RELOC_SH_IMMS16
2717 ENUMX
2718   BFD_RELOC_SH_IMMU16
2719 ENUMX
2720   BFD_RELOC_SH_IMM_LOW16
2721 ENUMX
2722   BFD_RELOC_SH_IMM_LOW16_PCREL
2723 ENUMX
2724   BFD_RELOC_SH_IMM_MEDLOW16
2725 ENUMX
2726   BFD_RELOC_SH_IMM_MEDLOW16_PCREL
2727 ENUMX
2728   BFD_RELOC_SH_IMM_MEDHI16
2729 ENUMX
2730   BFD_RELOC_SH_IMM_MEDHI16_PCREL
2731 ENUMX
2732   BFD_RELOC_SH_IMM_HI16
2733 ENUMX
2734   BFD_RELOC_SH_IMM_HI16_PCREL
2735 ENUMX
2736   BFD_RELOC_SH_PT_16
2737 ENUMX
2738   BFD_RELOC_SH_TLS_GD_32
2739 ENUMX
2740   BFD_RELOC_SH_TLS_LD_32
2741 ENUMX
2742   BFD_RELOC_SH_TLS_LDO_32
2743 ENUMX
2744   BFD_RELOC_SH_TLS_IE_32
2745 ENUMX
2746   BFD_RELOC_SH_TLS_LE_32
2747 ENUMX
2748   BFD_RELOC_SH_TLS_DTPMOD32
2749 ENUMX
2750   BFD_RELOC_SH_TLS_DTPOFF32
2751 ENUMX
2752   BFD_RELOC_SH_TLS_TPOFF32
2753 ENUMDOC
2754   Renesas / SuperH SH relocs.  Not all of these appear in object files.
2755
2756 ENUM
2757   BFD_RELOC_THUMB_PCREL_BRANCH9
2758 ENUMX
2759   BFD_RELOC_THUMB_PCREL_BRANCH12
2760 ENUMX
2761   BFD_RELOC_THUMB_PCREL_BRANCH23
2762 ENUMDOC
2763   Thumb 23-, 12- and 9-bit pc-relative branches.  The lowest bit must
2764   be zero and is not stored in the instruction.
2765
2766 ENUM
2767   BFD_RELOC_ARC_B22_PCREL
2768 ENUMDOC
2769   ARC Cores relocs.
2770   ARC 22 bit pc-relative branch.  The lowest two bits must be zero and are
2771   not stored in the instruction.  The high 20 bits are installed in bits 26
2772   through 7 of the instruction.
2773 ENUM
2774   BFD_RELOC_ARC_B26
2775 ENUMDOC
2776   ARC 26 bit absolute branch.  The lowest two bits must be zero and are not
2777   stored in the instruction.  The high 24 bits are installed in bits 23
2778   through 0.
2779
2780 ENUM
2781   BFD_RELOC_D10V_10_PCREL_R
2782 ENUMDOC
2783   Mitsubishi D10V relocs.
2784   This is a 10-bit reloc with the right 2 bits
2785   assumed to be 0.
2786 ENUM
2787   BFD_RELOC_D10V_10_PCREL_L
2788 ENUMDOC
2789   Mitsubishi D10V relocs.
2790   This is a 10-bit reloc with the right 2 bits
2791   assumed to be 0.  This is the same as the previous reloc
2792   except it is in the left container, i.e.,
2793   shifted left 15 bits.
2794 ENUM
2795   BFD_RELOC_D10V_18
2796 ENUMDOC
2797   This is an 18-bit reloc with the right 2 bits
2798   assumed to be 0.
2799 ENUM
2800   BFD_RELOC_D10V_18_PCREL
2801 ENUMDOC
2802   This is an 18-bit reloc with the right 2 bits
2803   assumed to be 0.
2804
2805 ENUM
2806   BFD_RELOC_D30V_6
2807 ENUMDOC
2808   Mitsubishi D30V relocs.
2809   This is a 6-bit absolute reloc.
2810 ENUM
2811   BFD_RELOC_D30V_9_PCREL
2812 ENUMDOC
2813   This is a 6-bit pc-relative reloc with
2814   the right 3 bits assumed to be 0.
2815 ENUM
2816   BFD_RELOC_D30V_9_PCREL_R
2817 ENUMDOC
2818   This is a 6-bit pc-relative reloc with
2819   the right 3 bits assumed to be 0. Same
2820   as the previous reloc but on the right side
2821   of the container.
2822 ENUM
2823   BFD_RELOC_D30V_15
2824 ENUMDOC
2825   This is a 12-bit absolute reloc with the
2826   right 3 bitsassumed to be 0.
2827 ENUM
2828   BFD_RELOC_D30V_15_PCREL
2829 ENUMDOC
2830   This is a 12-bit pc-relative reloc with
2831   the right 3 bits assumed to be 0.
2832 ENUM
2833   BFD_RELOC_D30V_15_PCREL_R
2834 ENUMDOC
2835   This is a 12-bit pc-relative reloc with
2836   the right 3 bits assumed to be 0. Same
2837   as the previous reloc but on the right side
2838   of the container.
2839 ENUM
2840   BFD_RELOC_D30V_21
2841 ENUMDOC
2842   This is an 18-bit absolute reloc with
2843   the right 3 bits assumed to be 0.
2844 ENUM
2845   BFD_RELOC_D30V_21_PCREL
2846 ENUMDOC
2847   This is an 18-bit pc-relative reloc with
2848   the right 3 bits assumed to be 0.
2849 ENUM
2850   BFD_RELOC_D30V_21_PCREL_R
2851 ENUMDOC
2852   This is an 18-bit pc-relative reloc with
2853   the right 3 bits assumed to be 0. Same
2854   as the previous reloc but on the right side
2855   of the container.
2856 ENUM
2857   BFD_RELOC_D30V_32
2858 ENUMDOC
2859   This is a 32-bit absolute reloc.
2860 ENUM
2861   BFD_RELOC_D30V_32_PCREL
2862 ENUMDOC
2863   This is a 32-bit pc-relative reloc.
2864
2865 ENUM
2866   BFD_RELOC_DLX_HI16_S
2867 ENUMDOC
2868   DLX relocs
2869 ENUM
2870   BFD_RELOC_DLX_LO16
2871 ENUMDOC
2872   DLX relocs
2873 ENUM
2874   BFD_RELOC_DLX_JMP26
2875 ENUMDOC
2876   DLX relocs
2877
2878 ENUM
2879   BFD_RELOC_M32R_24
2880 ENUMDOC
2881   Renesas M32R (formerly Mitsubishi M32R) relocs.
2882   This is a 24 bit absolute address.
2883 ENUM
2884   BFD_RELOC_M32R_10_PCREL
2885 ENUMDOC
2886   This is a 10-bit pc-relative reloc with the right 2 bits assumed to be 0.
2887 ENUM
2888   BFD_RELOC_M32R_18_PCREL
2889 ENUMDOC
2890   This is an 18-bit reloc with the right 2 bits assumed to be 0.
2891 ENUM
2892   BFD_RELOC_M32R_26_PCREL
2893 ENUMDOC
2894   This is a 26-bit reloc with the right 2 bits assumed to be 0.
2895 ENUM
2896   BFD_RELOC_M32R_HI16_ULO
2897 ENUMDOC
2898   This is a 16-bit reloc containing the high 16 bits of an address
2899   used when the lower 16 bits are treated as unsigned.
2900 ENUM
2901   BFD_RELOC_M32R_HI16_SLO
2902 ENUMDOC
2903   This is a 16-bit reloc containing the high 16 bits of an address
2904   used when the lower 16 bits are treated as signed.
2905 ENUM
2906   BFD_RELOC_M32R_LO16
2907 ENUMDOC
2908   This is a 16-bit reloc containing the lower 16 bits of an address.
2909 ENUM
2910   BFD_RELOC_M32R_SDA16
2911 ENUMDOC
2912   This is a 16-bit reloc containing the small data area offset for use in
2913   add3, load, and store instructions.
2914
2915 ENUM
2916   BFD_RELOC_V850_9_PCREL
2917 ENUMDOC
2918   This is a 9-bit reloc
2919 ENUM
2920   BFD_RELOC_V850_22_PCREL
2921 ENUMDOC
2922   This is a 22-bit reloc
2923
2924 ENUM
2925   BFD_RELOC_V850_SDA_16_16_OFFSET
2926 ENUMDOC
2927   This is a 16 bit offset from the short data area pointer.
2928 ENUM
2929   BFD_RELOC_V850_SDA_15_16_OFFSET
2930 ENUMDOC
2931   This is a 16 bit offset (of which only 15 bits are used) from the
2932   short data area pointer.
2933 ENUM
2934   BFD_RELOC_V850_ZDA_16_16_OFFSET
2935 ENUMDOC
2936   This is a 16 bit offset from the zero data area pointer.
2937 ENUM
2938   BFD_RELOC_V850_ZDA_15_16_OFFSET
2939 ENUMDOC
2940   This is a 16 bit offset (of which only 15 bits are used) from the
2941   zero data area pointer.
2942 ENUM
2943   BFD_RELOC_V850_TDA_6_8_OFFSET
2944 ENUMDOC
2945   This is an 8 bit offset (of which only 6 bits are used) from the
2946   tiny data area pointer.
2947 ENUM
2948   BFD_RELOC_V850_TDA_7_8_OFFSET
2949 ENUMDOC
2950   This is an 8bit offset (of which only 7 bits are used) from the tiny
2951   data area pointer.
2952 ENUM
2953   BFD_RELOC_V850_TDA_7_7_OFFSET
2954 ENUMDOC
2955   This is a 7 bit offset from the tiny data area pointer.
2956 ENUM
2957   BFD_RELOC_V850_TDA_16_16_OFFSET
2958 ENUMDOC
2959   This is a 16 bit offset from the tiny data area pointer.
2960 COMMENT
2961 ENUM
2962   BFD_RELOC_V850_TDA_4_5_OFFSET
2963 ENUMDOC
2964   This is a 5 bit offset (of which only 4 bits are used) from the tiny
2965   data area pointer.
2966 ENUM
2967   BFD_RELOC_V850_TDA_4_4_OFFSET
2968 ENUMDOC
2969   This is a 4 bit offset from the tiny data area pointer.
2970 ENUM
2971   BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
2972 ENUMDOC
2973   This is a 16 bit offset from the short data area pointer, with the
2974   bits placed non-contigously in the instruction.
2975 ENUM
2976   BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
2977 ENUMDOC
2978   This is a 16 bit offset from the zero data area pointer, with the
2979   bits placed non-contigously in the instruction.
2980 ENUM
2981   BFD_RELOC_V850_CALLT_6_7_OFFSET
2982 ENUMDOC
2983   This is a 6 bit offset from the call table base pointer.
2984 ENUM
2985   BFD_RELOC_V850_CALLT_16_16_OFFSET
2986 ENUMDOC
2987   This is a 16 bit offset from the call table base pointer.
2988 ENUM
2989   BFD_RELOC_V850_LONGCALL
2990 ENUMDOC
2991   Used for relaxing indirect function calls.
2992 ENUM
2993   BFD_RELOC_V850_LONGJUMP
2994 ENUMDOC
2995   Used for relaxing indirect jumps.
2996 ENUM
2997   BFD_RELOC_V850_ALIGN
2998 ENUMDOC
2999   Used to maintain alignment whilst relaxing.
3000 ENUM
3001   BFD_RELOC_MN10300_32_PCREL
3002 ENUMDOC
3003   This is a 32bit pcrel reloc for the mn10300, offset by two bytes in the
3004   instruction.
3005 ENUM
3006   BFD_RELOC_MN10300_16_PCREL
3007 ENUMDOC
3008   This is a 16bit pcrel reloc for the mn10300, offset by two bytes in the
3009   instruction.
3010
3011 ENUM
3012   BFD_RELOC_TIC30_LDP
3013 ENUMDOC
3014   This is a 8bit DP reloc for the tms320c30, where the most
3015   significant 8 bits of a 24 bit word are placed into the least
3016   significant 8 bits of the opcode.
3017
3018 ENUM
3019   BFD_RELOC_TIC54X_PARTLS7
3020 ENUMDOC
3021   This is a 7bit reloc for the tms320c54x, where the least
3022   significant 7 bits of a 16 bit word are placed into the least
3023   significant 7 bits of the opcode.
3024
3025 ENUM
3026   BFD_RELOC_TIC54X_PARTMS9
3027 ENUMDOC
3028   This is a 9bit DP reloc for the tms320c54x, where the most
3029   significant 9 bits of a 16 bit word are placed into the least
3030   significant 9 bits of the opcode.
3031
3032 ENUM
3033   BFD_RELOC_TIC54X_23
3034 ENUMDOC
3035   This is an extended address 23-bit reloc for the tms320c54x.
3036
3037 ENUM
3038   BFD_RELOC_TIC54X_16_OF_23
3039 ENUMDOC
3040   This is a 16-bit reloc for the tms320c54x, where the least
3041   significant 16 bits of a 23-bit extended address are placed into
3042   the opcode.
3043
3044 ENUM
3045   BFD_RELOC_TIC54X_MS7_OF_23
3046 ENUMDOC
3047   This is a reloc for the tms320c54x, where the most
3048   significant 7 bits of a 23-bit extended address are placed into
3049   the opcode.
3050
3051 ENUM
3052   BFD_RELOC_FR30_48
3053 ENUMDOC
3054   This is a 48 bit reloc for the FR30 that stores 32 bits.
3055 ENUM
3056   BFD_RELOC_FR30_20
3057 ENUMDOC
3058   This is a 32 bit reloc for the FR30 that stores 20 bits split up into
3059   two sections.
3060 ENUM
3061   BFD_RELOC_FR30_6_IN_4
3062 ENUMDOC
3063   This is a 16 bit reloc for the FR30 that stores a 6 bit word offset in
3064   4 bits.
3065 ENUM
3066   BFD_RELOC_FR30_8_IN_8
3067 ENUMDOC
3068   This is a 16 bit reloc for the FR30 that stores an 8 bit byte offset
3069   into 8 bits.
3070 ENUM
3071   BFD_RELOC_FR30_9_IN_8
3072 ENUMDOC
3073   This is a 16 bit reloc for the FR30 that stores a 9 bit short offset
3074   into 8 bits.
3075 ENUM
3076   BFD_RELOC_FR30_10_IN_8
3077 ENUMDOC
3078   This is a 16 bit reloc for the FR30 that stores a 10 bit word offset
3079   into 8 bits.
3080 ENUM
3081   BFD_RELOC_FR30_9_PCREL
3082 ENUMDOC
3083   This is a 16 bit reloc for the FR30 that stores a 9 bit pc relative
3084   short offset into 8 bits.
3085 ENUM
3086   BFD_RELOC_FR30_12_PCREL
3087 ENUMDOC
3088   This is a 16 bit reloc for the FR30 that stores a 12 bit pc relative
3089   short offset into 11 bits.
3090
3091 ENUM
3092   BFD_RELOC_MCORE_PCREL_IMM8BY4
3093 ENUMX
3094   BFD_RELOC_MCORE_PCREL_IMM11BY2
3095 ENUMX
3096   BFD_RELOC_MCORE_PCREL_IMM4BY2
3097 ENUMX
3098   BFD_RELOC_MCORE_PCREL_32
3099 ENUMX
3100   BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2
3101 ENUMX
3102   BFD_RELOC_MCORE_RVA
3103 ENUMDOC
3104   Motorola Mcore relocations.
3105
3106 ENUM
3107   BFD_RELOC_MMIX_GETA
3108 ENUMX
3109   BFD_RELOC_MMIX_GETA_1
3110 ENUMX
3111   BFD_RELOC_MMIX_GETA_2
3112 ENUMX
3113   BFD_RELOC_MMIX_GETA_3
3114 ENUMDOC
3115   These are relocations for the GETA instruction.
3116 ENUM
3117   BFD_RELOC_MMIX_CBRANCH
3118 ENUMX
3119   BFD_RELOC_MMIX_CBRANCH_J
3120 ENUMX
3121   BFD_RELOC_MMIX_CBRANCH_1
3122 ENUMX
3123   BFD_RELOC_MMIX_CBRANCH_2
3124 ENUMX
3125   BFD_RELOC_MMIX_CBRANCH_3
3126 ENUMDOC
3127   These are relocations for a conditional branch instruction.
3128 ENUM
3129   BFD_RELOC_MMIX_PUSHJ
3130 ENUMX
3131   BFD_RELOC_MMIX_PUSHJ_1
3132 ENUMX
3133   BFD_RELOC_MMIX_PUSHJ_2
3134 ENUMX
3135   BFD_RELOC_MMIX_PUSHJ_3
3136 ENUMDOC
3137   These are relocations for the PUSHJ instruction.
3138 ENUM
3139   BFD_RELOC_MMIX_JMP
3140 ENUMX
3141   BFD_RELOC_MMIX_JMP_1
3142 ENUMX
3143   BFD_RELOC_MMIX_JMP_2
3144 ENUMX
3145   BFD_RELOC_MMIX_JMP_3
3146 ENUMDOC
3147   These are relocations for the JMP instruction.
3148 ENUM
3149   BFD_RELOC_MMIX_ADDR19
3150 ENUMDOC
3151   This is a relocation for a relative address as in a GETA instruction or
3152   a branch.
3153 ENUM
3154   BFD_RELOC_MMIX_ADDR27
3155 ENUMDOC
3156   This is a relocation for a relative address as in a JMP instruction.
3157 ENUM
3158   BFD_RELOC_MMIX_REG_OR_BYTE
3159 ENUMDOC
3160   This is a relocation for an instruction field that may be a general
3161   register or a value 0..255.
3162 ENUM
3163   BFD_RELOC_MMIX_REG
3164 ENUMDOC
3165   This is a relocation for an instruction field that may be a general
3166   register.
3167 ENUM
3168   BFD_RELOC_MMIX_BASE_PLUS_OFFSET
3169 ENUMDOC
3170   This is a relocation for two instruction fields holding a register and
3171   an offset, the equivalent of the relocation.
3172 ENUM
3173   BFD_RELOC_MMIX_LOCAL
3174 ENUMDOC
3175   This relocation is an assertion that the expression is not allocated as
3176   a global register.  It does not modify contents.
3177
3178 ENUM
3179   BFD_RELOC_AVR_7_PCREL
3180 ENUMDOC
3181   This is a 16 bit reloc for the AVR that stores 8 bit pc relative
3182   short offset into 7 bits.
3183 ENUM
3184   BFD_RELOC_AVR_13_PCREL
3185 ENUMDOC
3186   This is a 16 bit reloc for the AVR that stores 13 bit pc relative
3187   short offset into 12 bits.
3188 ENUM
3189   BFD_RELOC_AVR_16_PM
3190 ENUMDOC
3191   This is a 16 bit reloc for the AVR that stores 17 bit value (usually
3192   program memory address) into 16 bits.
3193 ENUM
3194   BFD_RELOC_AVR_LO8_LDI
3195 ENUMDOC
3196   This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3197   data memory address) into 8 bit immediate value of LDI insn.
3198 ENUM
3199   BFD_RELOC_AVR_HI8_LDI
3200 ENUMDOC
3201   This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3202   of data memory address) into 8 bit immediate value of LDI insn.
3203 ENUM
3204   BFD_RELOC_AVR_HH8_LDI
3205 ENUMDOC
3206   This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3207   of program memory address) into 8 bit immediate value of LDI insn.
3208 ENUM
3209   BFD_RELOC_AVR_LO8_LDI_NEG
3210 ENUMDOC
3211   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3212   (usually data memory address) into 8 bit immediate value of SUBI insn.
3213 ENUM
3214   BFD_RELOC_AVR_HI8_LDI_NEG
3215 ENUMDOC
3216   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3217   (high 8 bit of data memory address) into 8 bit immediate value of
3218   SUBI insn.
3219 ENUM
3220   BFD_RELOC_AVR_HH8_LDI_NEG
3221 ENUMDOC
3222   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3223   (most high 8 bit of program memory address) into 8 bit immediate value
3224   of LDI or SUBI insn.
3225 ENUM
3226   BFD_RELOC_AVR_LO8_LDI_PM
3227 ENUMDOC
3228   This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3229   command address) into 8 bit immediate value of LDI insn.
3230 ENUM
3231   BFD_RELOC_AVR_HI8_LDI_PM
3232 ENUMDOC
3233   This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3234   of command address) into 8 bit immediate value of LDI insn.
3235 ENUM
3236   BFD_RELOC_AVR_HH8_LDI_PM
3237 ENUMDOC
3238   This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3239   of command address) into 8 bit immediate value of LDI insn.
3240 ENUM
3241   BFD_RELOC_AVR_LO8_LDI_PM_NEG
3242 ENUMDOC
3243   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3244   (usually command address) into 8 bit immediate value of SUBI insn.
3245 ENUM
3246   BFD_RELOC_AVR_HI8_LDI_PM_NEG
3247 ENUMDOC
3248   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3249   (high 8 bit of 16 bit command address) into 8 bit immediate value
3250   of SUBI insn.
3251 ENUM
3252   BFD_RELOC_AVR_HH8_LDI_PM_NEG
3253 ENUMDOC
3254   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3255   (high 6 bit of 22 bit command address) into 8 bit immediate
3256   value of SUBI insn.
3257 ENUM
3258   BFD_RELOC_AVR_CALL
3259 ENUMDOC
3260   This is a 32 bit reloc for the AVR that stores 23 bit value
3261   into 22 bits.
3262
3263 ENUM
3264   BFD_RELOC_390_12
3265 ENUMDOC
3266    Direct 12 bit.
3267 ENUM
3268   BFD_RELOC_390_GOT12
3269 ENUMDOC
3270   12 bit GOT offset.
3271 ENUM
3272   BFD_RELOC_390_PLT32
3273 ENUMDOC
3274   32 bit PC relative PLT address.
3275 ENUM
3276   BFD_RELOC_390_COPY
3277 ENUMDOC
3278   Copy symbol at runtime.
3279 ENUM
3280   BFD_RELOC_390_GLOB_DAT
3281 ENUMDOC
3282   Create GOT entry.
3283 ENUM
3284   BFD_RELOC_390_JMP_SLOT
3285 ENUMDOC
3286   Create PLT entry.
3287 ENUM
3288   BFD_RELOC_390_RELATIVE
3289 ENUMDOC
3290   Adjust by program base.
3291 ENUM
3292   BFD_RELOC_390_GOTPC
3293 ENUMDOC
3294   32 bit PC relative offset to GOT.
3295 ENUM
3296   BFD_RELOC_390_GOT16
3297 ENUMDOC
3298   16 bit GOT offset.
3299 ENUM
3300   BFD_RELOC_390_PC16DBL
3301 ENUMDOC
3302   PC relative 16 bit shifted by 1.
3303 ENUM
3304   BFD_RELOC_390_PLT16DBL
3305 ENUMDOC
3306   16 bit PC rel. PLT shifted by 1.
3307 ENUM
3308   BFD_RELOC_390_PC32DBL
3309 ENUMDOC
3310   PC relative 32 bit shifted by 1.
3311 ENUM
3312   BFD_RELOC_390_PLT32DBL
3313 ENUMDOC
3314   32 bit PC rel. PLT shifted by 1.
3315 ENUM
3316   BFD_RELOC_390_GOTPCDBL
3317 ENUMDOC
3318   32 bit PC rel. GOT shifted by 1.
3319 ENUM
3320   BFD_RELOC_390_GOT64
3321 ENUMDOC
3322   64 bit GOT offset.
3323 ENUM
3324   BFD_RELOC_390_PLT64
3325 ENUMDOC
3326   64 bit PC relative PLT address.
3327 ENUM
3328   BFD_RELOC_390_GOTENT
3329 ENUMDOC
3330   32 bit rel. offset to GOT entry.
3331 ENUM
3332   BFD_RELOC_390_GOTOFF64
3333 ENUMDOC
3334   64 bit offset to GOT.
3335 ENUM
3336   BFD_RELOC_390_GOTPLT12
3337 ENUMDOC
3338   12-bit offset to symbol-entry within GOT, with PLT handling.
3339 ENUM
3340   BFD_RELOC_390_GOTPLT16
3341 ENUMDOC
3342   16-bit offset to symbol-entry within GOT, with PLT handling.
3343 ENUM
3344   BFD_RELOC_390_GOTPLT32
3345 ENUMDOC
3346   32-bit offset to symbol-entry within GOT, with PLT handling.
3347 ENUM
3348   BFD_RELOC_390_GOTPLT64
3349 ENUMDOC
3350   64-bit offset to symbol-entry within GOT, with PLT handling.
3351 ENUM
3352   BFD_RELOC_390_GOTPLTENT
3353 ENUMDOC
3354   32-bit rel. offset to symbol-entry within GOT, with PLT handling.
3355 ENUM
3356   BFD_RELOC_390_PLTOFF16
3357 ENUMDOC
3358   16-bit rel. offset from the GOT to a PLT entry.
3359 ENUM
3360   BFD_RELOC_390_PLTOFF32
3361 ENUMDOC
3362   32-bit rel. offset from the GOT to a PLT entry.
3363 ENUM
3364   BFD_RELOC_390_PLTOFF64
3365 ENUMDOC
3366   64-bit rel. offset from the GOT to a PLT entry.
3367
3368 ENUM
3369   BFD_RELOC_390_TLS_LOAD
3370 ENUMX
3371   BFD_RELOC_390_TLS_GDCALL
3372 ENUMX
3373   BFD_RELOC_390_TLS_LDCALL
3374 ENUMX
3375   BFD_RELOC_390_TLS_GD32
3376 ENUMX
3377   BFD_RELOC_390_TLS_GD64
3378 ENUMX
3379   BFD_RELOC_390_TLS_GOTIE12
3380 ENUMX
3381   BFD_RELOC_390_TLS_GOTIE32
3382 ENUMX
3383   BFD_RELOC_390_TLS_GOTIE64
3384 ENUMX
3385   BFD_RELOC_390_TLS_LDM32
3386 ENUMX
3387   BFD_RELOC_390_TLS_LDM64
3388 ENUMX
3389   BFD_RELOC_390_TLS_IE32
3390 ENUMX
3391   BFD_RELOC_390_TLS_IE64
3392 ENUMX
3393   BFD_RELOC_390_TLS_IEENT
3394 ENUMX
3395   BFD_RELOC_390_TLS_LE32
3396 ENUMX
3397   BFD_RELOC_390_TLS_LE64
3398 ENUMX
3399   BFD_RELOC_390_TLS_LDO32
3400 ENUMX
3401   BFD_RELOC_390_TLS_LDO64
3402 ENUMX
3403   BFD_RELOC_390_TLS_DTPMOD
3404 ENUMX
3405   BFD_RELOC_390_TLS_DTPOFF
3406 ENUMX
3407   BFD_RELOC_390_TLS_TPOFF
3408 ENUMDOC
3409   s390 tls relocations.
3410
3411 ENUM
3412   BFD_RELOC_390_20
3413 ENUMX
3414   BFD_RELOC_390_GOT20
3415 ENUMX
3416   BFD_RELOC_390_GOTPLT20
3417 ENUMX
3418   BFD_RELOC_390_TLS_GOTIE20
3419 ENUMDOC
3420   Long displacement extension.
3421
3422 ENUM
3423   BFD_RELOC_IP2K_FR9
3424 ENUMDOC
3425   Scenix IP2K - 9-bit register number / data address
3426 ENUM
3427   BFD_RELOC_IP2K_BANK
3428 ENUMDOC
3429   Scenix IP2K - 4-bit register/data bank number
3430 ENUM
3431   BFD_RELOC_IP2K_ADDR16CJP
3432 ENUMDOC
3433   Scenix IP2K - low 13 bits of instruction word address
3434 ENUM
3435   BFD_RELOC_IP2K_PAGE3
3436 ENUMDOC
3437   Scenix IP2K - high 3 bits of instruction word address
3438 ENUM
3439   BFD_RELOC_IP2K_LO8DATA
3440 ENUMX
3441   BFD_RELOC_IP2K_HI8DATA
3442 ENUMX
3443   BFD_RELOC_IP2K_EX8DATA
3444 ENUMDOC
3445   Scenix IP2K - ext/low/high 8 bits of data address
3446 ENUM
3447   BFD_RELOC_IP2K_LO8INSN
3448 ENUMX
3449   BFD_RELOC_IP2K_HI8INSN
3450 ENUMDOC
3451   Scenix IP2K - low/high 8 bits of instruction word address
3452 ENUM
3453   BFD_RELOC_IP2K_PC_SKIP
3454 ENUMDOC
3455   Scenix IP2K - even/odd PC modifier to modify snb pcl.0
3456 ENUM
3457   BFD_RELOC_IP2K_TEXT
3458 ENUMDOC
3459   Scenix IP2K - 16 bit word address in text section.
3460 ENUM
3461   BFD_RELOC_IP2K_FR_OFFSET
3462 ENUMDOC
3463   Scenix IP2K - 7-bit sp or dp offset
3464 ENUM
3465   BFD_RELOC_VPE4KMATH_DATA
3466 ENUMX
3467   BFD_RELOC_VPE4KMATH_INSN
3468 ENUMDOC
3469   Scenix VPE4K coprocessor - data/insn-space addressing
3470
3471 ENUM
3472   BFD_RELOC_VTABLE_INHERIT
3473 ENUMX
3474   BFD_RELOC_VTABLE_ENTRY
3475 ENUMDOC
3476   These two relocations are used by the linker to determine which of
3477   the entries in a C++ virtual function table are actually used.  When
3478   the --gc-sections option is given, the linker will zero out the entries
3479   that are not used, so that the code for those functions need not be
3480   included in the output.
3481
3482   VTABLE_INHERIT is a zero-space relocation used to describe to the
3483   linker the inheritence tree of a C++ virtual function table.  The
3484   relocation's symbol should be the parent class' vtable, and the
3485   relocation should be located at the child vtable.
3486
3487   VTABLE_ENTRY is a zero-space relocation that describes the use of a
3488   virtual function table entry.  The reloc's symbol should refer to the
3489   table of the class mentioned in the code.  Off of that base, an offset
3490   describes the entry that is being used.  For Rela hosts, this offset
3491   is stored in the reloc's addend.  For Rel hosts, we are forced to put
3492   this offset in the reloc's section offset.
3493
3494 ENUM
3495   BFD_RELOC_IA64_IMM14
3496 ENUMX
3497   BFD_RELOC_IA64_IMM22
3498 ENUMX
3499   BFD_RELOC_IA64_IMM64
3500 ENUMX
3501   BFD_RELOC_IA64_DIR32MSB
3502 ENUMX
3503   BFD_RELOC_IA64_DIR32LSB
3504 ENUMX
3505   BFD_RELOC_IA64_DIR64MSB
3506 ENUMX
3507   BFD_RELOC_IA64_DIR64LSB
3508 ENUMX
3509   BFD_RELOC_IA64_GPREL22
3510 ENUMX
3511   BFD_RELOC_IA64_GPREL64I
3512 ENUMX
3513   BFD_RELOC_IA64_GPREL32MSB
3514 ENUMX
3515   BFD_RELOC_IA64_GPREL32LSB
3516 ENUMX
3517   BFD_RELOC_IA64_GPREL64MSB
3518 ENUMX
3519   BFD_RELOC_IA64_GPREL64LSB
3520 ENUMX
3521   BFD_RELOC_IA64_LTOFF22
3522 ENUMX
3523   BFD_RELOC_IA64_LTOFF64I
3524 ENUMX
3525   BFD_RELOC_IA64_PLTOFF22
3526 ENUMX
3527   BFD_RELOC_IA64_PLTOFF64I
3528 ENUMX
3529   BFD_RELOC_IA64_PLTOFF64MSB
3530 ENUMX
3531   BFD_RELOC_IA64_PLTOFF64LSB
3532 ENUMX
3533   BFD_RELOC_IA64_FPTR64I
3534 ENUMX
3535   BFD_RELOC_IA64_FPTR32MSB
3536 ENUMX
3537   BFD_RELOC_IA64_FPTR32LSB
3538 ENUMX
3539   BFD_RELOC_IA64_FPTR64MSB
3540 ENUMX
3541   BFD_RELOC_IA64_FPTR64LSB
3542 ENUMX
3543   BFD_RELOC_IA64_PCREL21B
3544 ENUMX
3545   BFD_RELOC_IA64_PCREL21BI
3546 ENUMX
3547   BFD_RELOC_IA64_PCREL21M
3548 ENUMX
3549   BFD_RELOC_IA64_PCREL21F
3550 ENUMX
3551   BFD_RELOC_IA64_PCREL22
3552 ENUMX
3553   BFD_RELOC_IA64_PCREL60B
3554 ENUMX
3555   BFD_RELOC_IA64_PCREL64I
3556 ENUMX
3557   BFD_RELOC_IA64_PCREL32MSB
3558 ENUMX
3559   BFD_RELOC_IA64_PCREL32LSB
3560 ENUMX
3561   BFD_RELOC_IA64_PCREL64MSB
3562 ENUMX
3563   BFD_RELOC_IA64_PCREL64LSB
3564 ENUMX
3565   BFD_RELOC_IA64_LTOFF_FPTR22
3566 ENUMX
3567   BFD_RELOC_IA64_LTOFF_FPTR64I
3568 ENUMX
3569   BFD_RELOC_IA64_LTOFF_FPTR32MSB
3570 ENUMX
3571   BFD_RELOC_IA64_LTOFF_FPTR32LSB
3572 ENUMX
3573   BFD_RELOC_IA64_LTOFF_FPTR64MSB
3574 ENUMX
3575   BFD_RELOC_IA64_LTOFF_FPTR64LSB
3576 ENUMX
3577   BFD_RELOC_IA64_SEGREL32MSB
3578 ENUMX
3579   BFD_RELOC_IA64_SEGREL32LSB
3580 ENUMX
3581   BFD_RELOC_IA64_SEGREL64MSB
3582 ENUMX
3583   BFD_RELOC_IA64_SEGREL64LSB
3584 ENUMX
3585   BFD_RELOC_IA64_SECREL32MSB
3586 ENUMX
3587   BFD_RELOC_IA64_SECREL32LSB
3588 ENUMX
3589   BFD_RELOC_IA64_SECREL64MSB
3590 ENUMX
3591   BFD_RELOC_IA64_SECREL64LSB
3592 ENUMX
3593   BFD_RELOC_IA64_REL32MSB
3594 ENUMX
3595   BFD_RELOC_IA64_REL32LSB
3596 ENUMX
3597   BFD_RELOC_IA64_REL64MSB
3598 ENUMX
3599   BFD_RELOC_IA64_REL64LSB
3600 ENUMX
3601   BFD_RELOC_IA64_LTV32MSB
3602 ENUMX
3603   BFD_RELOC_IA64_LTV32LSB
3604 ENUMX
3605   BFD_RELOC_IA64_LTV64MSB
3606 ENUMX
3607   BFD_RELOC_IA64_LTV64LSB
3608 ENUMX
3609   BFD_RELOC_IA64_IPLTMSB
3610 ENUMX
3611   BFD_RELOC_IA64_IPLTLSB
3612 ENUMX
3613   BFD_RELOC_IA64_COPY
3614 ENUMX
3615   BFD_RELOC_IA64_LTOFF22X
3616 ENUMX
3617   BFD_RELOC_IA64_LDXMOV
3618 ENUMX
3619   BFD_RELOC_IA64_TPREL14
3620 ENUMX
3621   BFD_RELOC_IA64_TPREL22
3622 ENUMX
3623   BFD_RELOC_IA64_TPREL64I
3624 ENUMX
3625   BFD_RELOC_IA64_TPREL64MSB
3626 ENUMX
3627   BFD_RELOC_IA64_TPREL64LSB
3628 ENUMX
3629   BFD_RELOC_IA64_LTOFF_TPREL22
3630 ENUMX
3631   BFD_RELOC_IA64_DTPMOD64MSB
3632 ENUMX
3633   BFD_RELOC_IA64_DTPMOD64LSB
3634 ENUMX
3635   BFD_RELOC_IA64_LTOFF_DTPMOD22
3636 ENUMX
3637   BFD_RELOC_IA64_DTPREL14
3638 ENUMX
3639   BFD_RELOC_IA64_DTPREL22
3640 ENUMX
3641   BFD_RELOC_IA64_DTPREL64I
3642 ENUMX
3643   BFD_RELOC_IA64_DTPREL32MSB
3644 ENUMX
3645   BFD_RELOC_IA64_DTPREL32LSB
3646 ENUMX
3647   BFD_RELOC_IA64_DTPREL64MSB
3648 ENUMX
3649   BFD_RELOC_IA64_DTPREL64LSB
3650 ENUMX
3651   BFD_RELOC_IA64_LTOFF_DTPREL22
3652 ENUMDOC
3653   Intel IA64 Relocations.
3654
3655 ENUM
3656   BFD_RELOC_M68HC11_HI8
3657 ENUMDOC
3658   Motorola 68HC11 reloc.
3659   This is the 8 bit high part of an absolute address.
3660 ENUM
3661   BFD_RELOC_M68HC11_LO8
3662 ENUMDOC
3663   Motorola 68HC11 reloc.
3664   This is the 8 bit low part of an absolute address.
3665 ENUM
3666   BFD_RELOC_M68HC11_3B
3667 ENUMDOC
3668   Motorola 68HC11 reloc.
3669   This is the 3 bit of a value.
3670 ENUM
3671   BFD_RELOC_M68HC11_RL_JUMP
3672 ENUMDOC
3673   Motorola 68HC11 reloc.
3674   This reloc marks the beginning of a jump/call instruction.
3675   It is used for linker relaxation to correctly identify beginning
3676   of instruction and change some branchs to use PC-relative
3677   addressing mode.
3678 ENUM
3679   BFD_RELOC_M68HC11_RL_GROUP
3680 ENUMDOC
3681   Motorola 68HC11 reloc.
3682   This reloc marks a group of several instructions that gcc generates
3683   and for which the linker relaxation pass can modify and/or remove
3684   some of them.
3685 ENUM
3686   BFD_RELOC_M68HC11_LO16
3687 ENUMDOC
3688   Motorola 68HC11 reloc.
3689   This is the 16-bit lower part of an address.  It is used for 'call'
3690   instruction to specify the symbol address without any special
3691   transformation (due to memory bank window).
3692 ENUM
3693   BFD_RELOC_M68HC11_PAGE
3694 ENUMDOC
3695   Motorola 68HC11 reloc.
3696   This is a 8-bit reloc that specifies the page number of an address.
3697   It is used by 'call' instruction to specify the page number of
3698   the symbol.
3699 ENUM
3700   BFD_RELOC_M68HC11_24
3701 ENUMDOC
3702   Motorola 68HC11 reloc.
3703   This is a 24-bit reloc that represents the address with a 16-bit
3704   value and a 8-bit page number.  The symbol address is transformed
3705   to follow the 16K memory bank of 68HC12 (seen as mapped in the window).
3706
3707 ENUM
3708   BFD_RELOC_CRIS_BDISP8
3709 ENUMX
3710   BFD_RELOC_CRIS_UNSIGNED_5
3711 ENUMX
3712   BFD_RELOC_CRIS_SIGNED_6
3713 ENUMX
3714   BFD_RELOC_CRIS_UNSIGNED_6
3715 ENUMX
3716   BFD_RELOC_CRIS_UNSIGNED_4
3717 ENUMDOC
3718   These relocs are only used within the CRIS assembler.  They are not
3719   (at present) written to any object files.
3720 ENUM
3721   BFD_RELOC_CRIS_COPY
3722 ENUMX
3723   BFD_RELOC_CRIS_GLOB_DAT
3724 ENUMX
3725   BFD_RELOC_CRIS_JUMP_SLOT
3726 ENUMX
3727   BFD_RELOC_CRIS_RELATIVE
3728 ENUMDOC
3729   Relocs used in ELF shared libraries for CRIS.
3730 ENUM
3731   BFD_RELOC_CRIS_32_GOT
3732 ENUMDOC
3733   32-bit offset to symbol-entry within GOT.
3734 ENUM
3735   BFD_RELOC_CRIS_16_GOT
3736 ENUMDOC
3737   16-bit offset to symbol-entry within GOT.
3738 ENUM
3739   BFD_RELOC_CRIS_32_GOTPLT
3740 ENUMDOC
3741   32-bit offset to symbol-entry within GOT, with PLT handling.
3742 ENUM
3743   BFD_RELOC_CRIS_16_GOTPLT
3744 ENUMDOC
3745   16-bit offset to symbol-entry within GOT, with PLT handling.
3746 ENUM
3747   BFD_RELOC_CRIS_32_GOTREL
3748 ENUMDOC
3749   32-bit offset to symbol, relative to GOT.
3750 ENUM
3751   BFD_RELOC_CRIS_32_PLT_GOTREL
3752 ENUMDOC
3753   32-bit offset to symbol with PLT entry, relative to GOT.
3754 ENUM
3755   BFD_RELOC_CRIS_32_PLT_PCREL
3756 ENUMDOC
3757   32-bit offset to symbol with PLT entry, relative to this relocation.
3758
3759 ENUM
3760   BFD_RELOC_860_COPY
3761 ENUMX
3762   BFD_RELOC_860_GLOB_DAT
3763 ENUMX
3764   BFD_RELOC_860_JUMP_SLOT
3765 ENUMX
3766   BFD_RELOC_860_RELATIVE
3767 ENUMX
3768   BFD_RELOC_860_PC26
3769 ENUMX
3770   BFD_RELOC_860_PLT26
3771 ENUMX
3772   BFD_RELOC_860_PC16
3773 ENUMX
3774   BFD_RELOC_860_LOW0
3775 ENUMX
3776   BFD_RELOC_860_SPLIT0
3777 ENUMX
3778   BFD_RELOC_860_LOW1
3779 ENUMX
3780   BFD_RELOC_860_SPLIT1
3781 ENUMX
3782   BFD_RELOC_860_LOW2
3783 ENUMX
3784   BFD_RELOC_860_SPLIT2
3785 ENUMX
3786   BFD_RELOC_860_LOW3
3787 ENUMX
3788   BFD_RELOC_860_LOGOT0
3789 ENUMX
3790   BFD_RELOC_860_SPGOT0
3791 ENUMX
3792   BFD_RELOC_860_LOGOT1
3793 ENUMX
3794   BFD_RELOC_860_SPGOT1
3795 ENUMX
3796   BFD_RELOC_860_LOGOTOFF0
3797 ENUMX
3798   BFD_RELOC_860_SPGOTOFF0
3799 ENUMX
3800   BFD_RELOC_860_LOGOTOFF1
3801 ENUMX
3802   BFD_RELOC_860_SPGOTOFF1
3803 ENUMX
3804   BFD_RELOC_860_LOGOTOFF2
3805 ENUMX
3806   BFD_RELOC_860_LOGOTOFF3
3807 ENUMX
3808   BFD_RELOC_860_LOPC
3809 ENUMX
3810   BFD_RELOC_860_HIGHADJ
3811 ENUMX
3812   BFD_RELOC_860_HAGOT
3813 ENUMX
3814   BFD_RELOC_860_HAGOTOFF
3815 ENUMX
3816   BFD_RELOC_860_HAPC
3817 ENUMX
3818   BFD_RELOC_860_HIGH
3819 ENUMX
3820   BFD_RELOC_860_HIGOT
3821 ENUMX
3822   BFD_RELOC_860_HIGOTOFF
3823 ENUMDOC
3824   Intel i860 Relocations.
3825
3826 ENUM
3827   BFD_RELOC_OPENRISC_ABS_26
3828 ENUMX
3829   BFD_RELOC_OPENRISC_REL_26
3830 ENUMDOC
3831   OpenRISC Relocations.
3832
3833 ENUM
3834   BFD_RELOC_H8_DIR16A8
3835 ENUMX
3836   BFD_RELOC_H8_DIR16R8
3837 ENUMX
3838   BFD_RELOC_H8_DIR24A8
3839 ENUMX
3840   BFD_RELOC_H8_DIR24R8
3841 ENUMX
3842   BFD_RELOC_H8_DIR32A16
3843 ENUMDOC
3844   H8 elf Relocations.
3845
3846 ENUM
3847   BFD_RELOC_XSTORMY16_REL_12
3848 ENUMX
3849   BFD_RELOC_XSTORMY16_12
3850 ENUMX
3851   BFD_RELOC_XSTORMY16_24
3852 ENUMX
3853   BFD_RELOC_XSTORMY16_FPTR16
3854 ENUMDOC
3855   Sony Xstormy16 Relocations.
3856
3857 ENUM
3858   BFD_RELOC_VAX_GLOB_DAT
3859 ENUMX
3860   BFD_RELOC_VAX_JMP_SLOT
3861 ENUMX
3862   BFD_RELOC_VAX_RELATIVE
3863 ENUMDOC
3864   Relocations used by VAX ELF.
3865
3866 ENUM
3867   BFD_RELOC_MSP430_10_PCREL
3868 ENUMX
3869   BFD_RELOC_MSP430_16_PCREL
3870 ENUMX
3871   BFD_RELOC_MSP430_16
3872 ENUMX
3873   BFD_RELOC_MSP430_16_PCREL_BYTE
3874 ENUMX
3875   BFD_RELOC_MSP430_16_BYTE
3876 ENUMDOC
3877   msp430 specific relocation codes
3878
3879 ENUM
3880   BFD_RELOC_IQ2000_OFFSET_16
3881 ENUMX
3882   BFD_RELOC_IQ2000_OFFSET_21
3883 ENUMX
3884   BFD_RELOC_IQ2000_UHI16
3885 ENUMDOC
3886   IQ2000 Relocations.
3887
3888 ENUM
3889   BFD_RELOC_XTENSA_RTLD
3890 ENUMDOC
3891   Special Xtensa relocation used only by PLT entries in ELF shared
3892   objects to indicate that the runtime linker should set the value
3893   to one of its own internal functions or data structures.
3894 ENUM
3895   BFD_RELOC_XTENSA_GLOB_DAT
3896 ENUMX
3897   BFD_RELOC_XTENSA_JMP_SLOT
3898 ENUMX
3899   BFD_RELOC_XTENSA_RELATIVE
3900 ENUMDOC
3901   Xtensa relocations for ELF shared objects.
3902 ENUM
3903   BFD_RELOC_XTENSA_PLT
3904 ENUMDOC
3905   Xtensa relocation used in ELF object files for symbols that may require
3906   PLT entries.  Otherwise, this is just a generic 32-bit relocation.
3907 ENUM
3908   BFD_RELOC_XTENSA_OP0
3909 ENUMX
3910   BFD_RELOC_XTENSA_OP1
3911 ENUMX
3912   BFD_RELOC_XTENSA_OP2
3913 ENUMDOC
3914   Generic Xtensa relocations.  Only the operand number is encoded
3915   in the relocation.  The details are determined by extracting the
3916   instruction opcode.
3917 ENUM
3918   BFD_RELOC_XTENSA_ASM_EXPAND
3919 ENUMDOC
3920   Xtensa relocation to mark that the assembler expanded the
3921   instructions from an original target.  The expansion size is
3922   encoded in the reloc size.
3923 ENUM
3924   BFD_RELOC_XTENSA_ASM_SIMPLIFY
3925 ENUMDOC
3926   Xtensa relocation to mark that the linker should simplify
3927   assembler-expanded instructions.  This is commonly used
3928   internally by the linker after analysis of a
3929   BFD_RELOC_XTENSA_ASM_EXPAND.
3930
3931 ENDSENUM
3932   BFD_RELOC_UNUSED
3933 CODE_FRAGMENT
3934 .
3935 .typedef enum bfd_reloc_code_real bfd_reloc_code_real_type;
3936 */
3937
3938 /*
3939 FUNCTION
3940         bfd_reloc_type_lookup
3941
3942 SYNOPSIS
3943         reloc_howto_type *bfd_reloc_type_lookup
3944           (bfd *abfd, bfd_reloc_code_real_type code);
3945
3946 DESCRIPTION
3947         Return a pointer to a howto structure which, when
3948         invoked, will perform the relocation @var{code} on data from the
3949         architecture noted.
3950
3951 */
3952
3953 reloc_howto_type *
3954 bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
3955 {
3956   return BFD_SEND (abfd, reloc_type_lookup, (abfd, code));
3957 }
3958
3959 static reloc_howto_type bfd_howto_32 =
3960 HOWTO (0, 00, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "VRT32", FALSE, 0xffffffff, 0xffffffff, TRUE);
3961
3962 /*
3963 INTERNAL_FUNCTION
3964         bfd_default_reloc_type_lookup
3965
3966 SYNOPSIS
3967         reloc_howto_type *bfd_default_reloc_type_lookup
3968           (bfd *abfd, bfd_reloc_code_real_type  code);
3969
3970 DESCRIPTION
3971         Provides a default relocation lookup routine for any architecture.
3972
3973 */
3974
3975 reloc_howto_type *
3976 bfd_default_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
3977 {
3978   switch (code)
3979     {
3980     case BFD_RELOC_CTOR:
3981       /* The type of reloc used in a ctor, which will be as wide as the
3982          address - so either a 64, 32, or 16 bitter.  */
3983       switch (bfd_get_arch_info (abfd)->bits_per_address)
3984         {
3985         case 64:
3986           BFD_FAIL ();
3987         case 32:
3988           return &bfd_howto_32;
3989         case 16:
3990           BFD_FAIL ();
3991         default:
3992           BFD_FAIL ();
3993         }
3994     default:
3995       BFD_FAIL ();
3996     }
3997   return NULL;
3998 }
3999
4000 /*
4001 FUNCTION
4002         bfd_get_reloc_code_name
4003
4004 SYNOPSIS
4005         const char *bfd_get_reloc_code_name (bfd_reloc_code_real_type code);
4006
4007 DESCRIPTION
4008         Provides a printable name for the supplied relocation code.
4009         Useful mainly for printing error messages.
4010 */
4011
4012 const char *
4013 bfd_get_reloc_code_name (bfd_reloc_code_real_type code)
4014 {
4015   if (code > BFD_RELOC_UNUSED)
4016     return 0;
4017   return bfd_reloc_code_real_names[code];
4018 }
4019
4020 /*
4021 INTERNAL_FUNCTION
4022         bfd_generic_relax_section
4023
4024 SYNOPSIS
4025         bfd_boolean bfd_generic_relax_section
4026           (bfd *abfd,
4027            asection *section,
4028            struct bfd_link_info *,
4029            bfd_boolean *);
4030
4031 DESCRIPTION
4032         Provides default handling for relaxing for back ends which
4033         don't do relaxing -- i.e., does nothing.
4034 */
4035
4036 bfd_boolean
4037 bfd_generic_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
4038                            asection *section ATTRIBUTE_UNUSED,
4039                            struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
4040                            bfd_boolean *again)
4041 {
4042   *again = FALSE;
4043   return TRUE;
4044 }
4045
4046 /*
4047 INTERNAL_FUNCTION
4048         bfd_generic_gc_sections
4049
4050 SYNOPSIS
4051         bfd_boolean bfd_generic_gc_sections
4052           (bfd *, struct bfd_link_info *);
4053
4054 DESCRIPTION
4055         Provides default handling for relaxing for back ends which
4056         don't do section gc -- i.e., does nothing.
4057 */
4058
4059 bfd_boolean
4060 bfd_generic_gc_sections (bfd *abfd ATTRIBUTE_UNUSED,
4061                          struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4062 {
4063   return TRUE;
4064 }
4065
4066 /*
4067 INTERNAL_FUNCTION
4068         bfd_generic_merge_sections
4069
4070 SYNOPSIS
4071         bfd_boolean bfd_generic_merge_sections
4072           (bfd *, struct bfd_link_info *);
4073
4074 DESCRIPTION
4075         Provides default handling for SEC_MERGE section merging for back ends
4076         which don't have SEC_MERGE support -- i.e., does nothing.
4077 */
4078
4079 bfd_boolean
4080 bfd_generic_merge_sections (bfd *abfd ATTRIBUTE_UNUSED,
4081                             struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4082 {
4083   return TRUE;
4084 }
4085
4086 /*
4087 INTERNAL_FUNCTION
4088         bfd_generic_get_relocated_section_contents
4089
4090 SYNOPSIS
4091         bfd_byte *bfd_generic_get_relocated_section_contents
4092           (bfd *abfd,
4093            struct bfd_link_info *link_info,
4094            struct bfd_link_order *link_order,
4095            bfd_byte *data,
4096            bfd_boolean relocatable,
4097            asymbol **symbols);
4098
4099 DESCRIPTION
4100         Provides default handling of relocation effort for back ends
4101         which can't be bothered to do it efficiently.
4102
4103 */
4104
4105 bfd_byte *
4106 bfd_generic_get_relocated_section_contents (bfd *abfd,
4107                                             struct bfd_link_info *link_info,
4108                                             struct bfd_link_order *link_order,
4109                                             bfd_byte *data,
4110                                             bfd_boolean relocatable,
4111                                             asymbol **symbols)
4112 {
4113   /* Get enough memory to hold the stuff.  */
4114   bfd *input_bfd = link_order->u.indirect.section->owner;
4115   asection *input_section = link_order->u.indirect.section;
4116
4117   long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
4118   arelent **reloc_vector = NULL;
4119   long reloc_count;
4120
4121   if (reloc_size < 0)
4122     goto error_return;
4123
4124   reloc_vector = bfd_malloc (reloc_size);
4125   if (reloc_vector == NULL && reloc_size != 0)
4126     goto error_return;
4127
4128   /* Read in the section.  */
4129   if (!bfd_get_section_contents (input_bfd,
4130                                  input_section,
4131                                  data,
4132                                  0,
4133                                  input_section->_raw_size))
4134     goto error_return;
4135
4136   /* We're not relaxing the section, so just copy the size info.  */
4137   input_section->_cooked_size = input_section->_raw_size;
4138   input_section->reloc_done = TRUE;
4139
4140   reloc_count = bfd_canonicalize_reloc (input_bfd,
4141                                         input_section,
4142                                         reloc_vector,
4143                                         symbols);
4144   if (reloc_count < 0)
4145     goto error_return;
4146
4147   if (reloc_count > 0)
4148     {
4149       arelent **parent;
4150       for (parent = reloc_vector; *parent != NULL; parent++)
4151         {
4152           char *error_message = NULL;
4153           bfd_reloc_status_type r =
4154             bfd_perform_relocation (input_bfd,
4155                                     *parent,
4156                                     data,
4157                                     input_section,
4158                                     relocatable ? abfd : NULL,
4159                                     &error_message);
4160
4161           if (relocatable)
4162             {
4163               asection *os = input_section->output_section;
4164
4165               /* A partial link, so keep the relocs.  */
4166               os->orelocation[os->reloc_count] = *parent;
4167               os->reloc_count++;
4168             }
4169
4170           if (r != bfd_reloc_ok)
4171             {
4172               switch (r)
4173                 {
4174                 case bfd_reloc_undefined:
4175                   if (!((*link_info->callbacks->undefined_symbol)
4176                         (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4177                          input_bfd, input_section, (*parent)->address,
4178                          TRUE)))
4179                     goto error_return;
4180                   break;
4181                 case bfd_reloc_dangerous:
4182                   BFD_ASSERT (error_message != NULL);
4183                   if (!((*link_info->callbacks->reloc_dangerous)
4184                         (link_info, error_message, input_bfd, input_section,
4185                          (*parent)->address)))
4186                     goto error_return;
4187                   break;
4188                 case bfd_reloc_overflow:
4189                   if (!((*link_info->callbacks->reloc_overflow)
4190                         (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4191                          (*parent)->howto->name, (*parent)->addend,
4192                          input_bfd, input_section, (*parent)->address)))
4193                     goto error_return;
4194                   break;
4195                 case bfd_reloc_outofrange:
4196                 default:
4197                   abort ();
4198                   break;
4199                 }
4200
4201             }
4202         }
4203     }
4204   if (reloc_vector != NULL)
4205     free (reloc_vector);
4206   return data;
4207
4208 error_return:
4209   if (reloc_vector != NULL)
4210     free (reloc_vector);
4211   return NULL;
4212 }