bfd/reloc.c

   1 /* BFD support for handling relocation entries.
   2    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   3    2000, 2001, 2002, 2003
   4    Free Software Foundation, Inc.
   5    Written by Cygnus Support.
   6
   7    This file is part of BFD, the Binary File Descriptor library.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  22
  23 /*
  24 SECTION
  25         Relocations
  26
  27         BFD maintains relocations in much the same way it maintains
  28         symbols: they are left alone until required, then read in
  29         en-masse and translated into an internal form.  A common
  30         routine <<bfd_perform_relocation>> acts upon the
  31         canonical form to do the fixup.
  32
  33         Relocations are maintained on a per section basis,
  34         while symbols are maintained on a per BFD basis.
  35
  36         All that a back end has to do to fit the BFD interface is to create
  37         a <<struct reloc_cache_entry>> for each relocation
  38         in a particular section, and fill in the right bits of the structures.
  39
  40 @menu
  41 @* typedef arelent::
  42 @* howto manager::
  43 @end menu
  44
  45 */
  46
  47 /* DO compile in the reloc_code name table from libbfd.h.  */
  48 #define _BFD_MAKE_TABLE_bfd_reloc_code_real
  49
  50 #include "bfd.h"
  51 #include "sysdep.h"
  52 #include "bfdlink.h"
  53 #include "libbfd.h"
  54 /*
  55 DOCDD
  56 INODE
  57         typedef arelent, howto manager, Relocations, Relocations
  58
  59 SUBSECTION
  60         typedef arelent
  61
  62         This is the structure of a relocation entry:
  63
  64 CODE_FRAGMENT
  65 .
  66 .typedef enum bfd_reloc_status
  67 .{
  68 .  {* No errors detected.  *}
  69 .  bfd_reloc_ok,
  70 .
  71 .  {* The relocation was performed, but there was an overflow.  *}
  72 .  bfd_reloc_overflow,
  73 .
  74 .  {* The address to relocate was not within the section supplied.  *}
  75 .  bfd_reloc_outofrange,
  76 .
  77 .  {* Used by special functions.  *}
  78 .  bfd_reloc_continue,
  79 .
  80 .  {* Unsupported relocation size requested.  *}
  81 .  bfd_reloc_notsupported,
  82 .
  83 .  {* Unused.  *}
  84 .  bfd_reloc_other,
  85 .
  86 .  {* The symbol to relocate against was undefined.  *}
  87 .  bfd_reloc_undefined,
  88 .
  89 .  {* The relocation was performed, but may not be ok - presently
  90 .     generated only when linking i960 coff files with i960 b.out
  91 .     symbols.  If this type is returned, the error_message argument
  92 .     to bfd_perform_relocation will be set.  *}
  93 .  bfd_reloc_dangerous
  94 . }
  95 . bfd_reloc_status_type;
  96 .
  97 .
  98 .typedef struct reloc_cache_entry
  99 .{
 100 .  {* A pointer into the canonical table of pointers.  *}
 101 .  struct symbol_cache_entry **sym_ptr_ptr;
 102 .
 103 .  {* offset in section.  *}
 104 .  bfd_size_type address;
 105 .
 106 .  {* addend for relocation value.  *}
 107 .  bfd_vma addend;
 108 .
 109 .  {* Pointer to how to perform the required relocation.  *}
 110 .  reloc_howto_type *howto;
 111 .
 112 .}
 113 .arelent;
 114 .
 115 */
 116
 117 /*
 118 DESCRIPTION
 119
 120         Here is a description of each of the fields within an <<arelent>>:
 121
 122         o <<sym_ptr_ptr>>
 123
 124         The symbol table pointer points to a pointer to the symbol
 125         associated with the relocation request.  It is
 126         the pointer into the table returned by the back end's
 127         <<get_symtab>> action. @xref{Symbols}. The symbol is referenced
 128         through a pointer to a pointer so that tools like the linker
 129         can fix up all the symbols of the same name by modifying only
 130         one pointer. The relocation routine looks in the symbol and
 131         uses the base of the section the symbol is attached to and the
 132         value of the symbol as the initial relocation offset. If the
 133         symbol pointer is zero, then the section provided is looked up.
 134
 135         o <<address>>
 136
 137         The <<address>> field gives the offset in bytes from the base of
 138         the section data which owns the relocation record to the first
 139         byte of relocatable information. The actual data relocated
 140         will be relative to this point; for example, a relocation
 141         type which modifies the bottom two bytes of a four byte word
 142         would not touch the first byte pointed to in a big endian
 143         world.
 144
 145         o <<addend>>
 146
 147         The <<addend>> is a value provided by the back end to be added (!)
 148         to the relocation offset. Its interpretation is dependent upon
 149         the howto. For example, on the 68k the code:
 150
 151 |        char foo[];
 152 |        main()
 153 |                {
 154 |                return foo[0x12345678];
 155 |                }
 156
 157         Could be compiled into:
 158
 159 |        linkw fp,#-4
 160 |        moveb @@#12345678,d0
 161 |        extbl d0
 162 |        unlk fp
 163 |        rts
 164
 165         This could create a reloc pointing to <<foo>>, but leave the
 166         offset in the data, something like:
 167
 168 |RELOCATION RECORDS FOR [.text]:
 169 |offset   type      value
 170 |00000006 32        _foo
 171 |
 172 |00000000 4e56 fffc          ; linkw fp,#-4
 173 |00000004 1039 1234 5678     ; moveb @@#12345678,d0
 174 |0000000a 49c0               ; extbl d0
 175 |0000000c 4e5e               ; unlk fp
 176 |0000000e 4e75               ; rts
 177
 178         Using coff and an 88k, some instructions don't have enough
 179         space in them to represent the full address range, and
 180         pointers have to be loaded in two parts. So you'd get something like:
 181
 182 |        or.u     r13,r0,hi16(_foo+0x12345678)
 183 |        ld.b     r2,r13,lo16(_foo+0x12345678)
 184 |        jmp      r1
 185
 186         This should create two relocs, both pointing to <<_foo>>, and with
 187         0x12340000 in their addend field. The data would consist of:
 188
 189 |RELOCATION RECORDS FOR [.text]:
 190 |offset   type      value
 191 |00000002 HVRT16    _foo+0x12340000
 192 |00000006 LVRT16    _foo+0x12340000
 193 |
 194 |00000000 5da05678           ; or.u r13,r0,0x5678
 195 |00000004 1c4d5678           ; ld.b r2,r13,0x5678
 196 |00000008 f400c001           ; jmp r1
 197
 198         The relocation routine digs out the value from the data, adds
 199         it to the addend to get the original offset, and then adds the
 200         value of <<_foo>>. Note that all 32 bits have to be kept around
 201         somewhere, to cope with carry from bit 15 to bit 16.
 202
 203         One further example is the sparc and the a.out format. The
 204         sparc has a similar problem to the 88k, in that some
 205         instructions don't have room for an entire offset, but on the
 206         sparc the parts are created in odd sized lumps. The designers of
 207         the a.out format chose to not use the data within the section
 208         for storing part of the offset; all the offset is kept within
 209         the reloc. Anything in the data should be ignored.
 210
 211 |        save %sp,-112,%sp
 212 |        sethi %hi(_foo+0x12345678),%g2
 213 |        ldsb [%g2+%lo(_foo+0x12345678)],%i0
 214 |        ret
 215 |        restore
 216
 217         Both relocs contain a pointer to <<foo>>, and the offsets
 218         contain junk.
 219
 220 |RELOCATION RECORDS FOR [.text]:
 221 |offset   type      value
 222 |00000004 HI22      _foo+0x12345678
 223 |00000008 LO10      _foo+0x12345678
 224 |
 225 |00000000 9de3bf90     ; save %sp,-112,%sp
 226 |00000004 05000000     ; sethi %hi(_foo+0),%g2
 227 |00000008 f048a000     ; ldsb [%g2+%lo(_foo+0)],%i0
 228 |0000000c 81c7e008     ; ret
 229 |00000010 81e80000     ; restore
 230
 231         o <<howto>>
 232
 233         The <<howto>> field can be imagined as a
 234         relocation instruction. It is a pointer to a structure which
 235         contains information on what to do with all of the other
 236         information in the reloc record and data section. A back end
 237         would normally have a relocation instruction set and turn
 238         relocations into pointers to the correct structure on input -
 239         but it would be possible to create each howto field on demand.
 240
 241 */
 242
 243 /*
 244 SUBSUBSECTION
 245         <<enum complain_overflow>>
 246
 247         Indicates what sort of overflow checking should be done when
 248         performing a relocation.
 249
 250 CODE_FRAGMENT
 251 .
 252 .enum complain_overflow
 253 .{
 254 .  {* Do not complain on overflow.  *}
 255 .  complain_overflow_dont,
 256 .
 257 .  {* Complain if the bitfield overflows, whether it is considered
 258 .     as signed or unsigned.  *}
 259 .  complain_overflow_bitfield,
 260 .
 261 .  {* Complain if the value overflows when considered as signed
 262 .     number.  *}
 263 .  complain_overflow_signed,
 264 .
 265 .  {* Complain if the value overflows when considered as an
 266 .     unsigned number.  *}
 267 .  complain_overflow_unsigned
 268 .};
 269
 270 */
 271
 272 /*
 273 SUBSUBSECTION
 274         <<reloc_howto_type>>
 275
 276         The <<reloc_howto_type>> is a structure which contains all the
 277         information that libbfd needs to know to tie up a back end's data.
 278
 279 CODE_FRAGMENT
 280 .struct symbol_cache_entry;             {* Forward declaration.  *}
 281 .
 282 .struct reloc_howto_struct
 283 .{
 284 .  {*  The type field has mainly a documentary use - the back end can
 285 .      do what it wants with it, though normally the back end's
 286 .      external idea of what a reloc number is stored
 287 .      in this field.  For example, a PC relative word relocation
 288 .      in a coff environment has the type 023 - because that's
 289 .      what the outside world calls a R_PCRWORD reloc.  *}
 290 .  unsigned int type;
 291 .
 292 .  {*  The value the final relocation is shifted right by.  This drops
 293 .      unwanted data from the relocation.  *}
 294 .  unsigned int rightshift;
 295 .
 296 .  {*  The size of the item to be relocated.  This is *not* a
 297 .      power-of-two measure.  To get the number of bytes operated
 298 .      on by a type of relocation, use bfd_get_reloc_size.  *}
 299 .  int size;
 300 .
 301 .  {*  The number of bits in the item to be relocated.  This is used
 302 .      when doing overflow checking.  *}
 303 .  unsigned int bitsize;
 304 .
 305 .  {*  Notes that the relocation is relative to the location in the
 306 .      data section of the addend.  The relocation function will
 307 .      subtract from the relocation value the address of the location
 308 .      being relocated.  *}
 309 .  bfd_boolean pc_relative;
 310 .
 311 .  {*  The bit position of the reloc value in the destination.
 312 .      The relocated value is left shifted by this amount.  *}
 313 .  unsigned int bitpos;
 314 .
 315 .  {* What type of overflow error should be checked for when
 316 .     relocating.  *}
 317 .  enum complain_overflow complain_on_overflow;
 318 .
 319 .  {* If this field is non null, then the supplied function is
 320 .     called rather than the normal function.  This allows really
 321 .     strange relocation methods to be accomodated (e.g., i960 callj
 322 .     instructions).  *}
 323 .  bfd_reloc_status_type (*special_function)
 324 .    (bfd *, arelent *, struct symbol_cache_entry *, void *, asection *,
 325 .     bfd *, char **);
 326 .
 327 .  {* The textual name of the relocation type.  *}
 328 .  char *name;
 329 .
 330 .  {* Some formats record a relocation addend in the section contents
 331 .     rather than with the relocation.  For ELF formats this is the
 332 .     distinction between USE_REL and USE_RELA (though the code checks
 333 .     for USE_REL == 1/0).  The value of this field is TRUE if the
 334 .     addend is recorded with the section contents; when performing a
 335 .     partial link (ld -r) the section contents (the data) will be
 336 .     modified.  The value of this field is FALSE if addends are
 337 .     recorded with the relocation (in arelent.addend); when performing
 338 .     a partial link the relocation will be modified.
 339 .     All relocations for all ELF USE_RELA targets should set this field
 340 .     to FALSE (values of TRUE should be looked on with suspicion).
 341 .     However, the converse is not true: not all relocations of all ELF
 342 .     USE_REL targets set this field to TRUE.  Why this is so is peculiar
 343 .     to each particular target.  For relocs that aren't used in partial
 344 .     links (e.g. GOT stuff) it doesn't matter what this is set to.  *}
 345 .  bfd_boolean partial_inplace;
 346 .
 347 .  {* src_mask selects the part of the instruction (or data) to be used
 348 .     in the relocation sum.  If the target relocations don't have an
 349 .     addend in the reloc, eg. ELF USE_REL, src_mask will normally equal
 350 .     dst_mask to extract the addend from the section contents.  If
 351 .     relocations do have an addend in the reloc, eg. ELF USE_RELA, this
 352 .     field should be zero.  Non-zero values for ELF USE_RELA targets are
 353 .     bogus as in those cases the value in the dst_mask part of the
 354 .     section contents should be treated as garbage.  *}
 355 .  bfd_vma src_mask;
 356 .
 357 .  {* dst_mask selects which parts of the instruction (or data) are
 358 .     replaced with a relocated value.  *}
 359 .  bfd_vma dst_mask;
 360 .
 361 .  {* When some formats create PC relative instructions, they leave
 362 .     the value of the pc of the place being relocated in the offset
 363 .     slot of the instruction, so that a PC relative relocation can
 364 .     be made just by adding in an ordinary offset (e.g., sun3 a.out).
 365 .     Some formats leave the displacement part of an instruction
 366 .     empty (e.g., m88k bcs); this flag signals the fact.  *}
 367 .  bfd_boolean pcrel_offset;
 368 .};
 369 .
 370 */
 371
 372 /*
 373 FUNCTION
 374         The HOWTO Macro
 375
 376 DESCRIPTION
 377         The HOWTO define is horrible and will go away.
 378
 379 .#define HOWTO(C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC) \
 380 .  { (unsigned) C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC }
 381
 382 DESCRIPTION
 383         And will be replaced with the totally magic way. But for the
 384         moment, we are compatible, so do it this way.
 385
 386 .#define NEWHOWTO(FUNCTION, NAME, SIZE, REL, IN) \
 387 .  HOWTO (0, 0, SIZE, 0, REL, 0, complain_overflow_dont, FUNCTION, \
 388 .         NAME, FALSE, 0, 0, IN)
 389 .
 390
 391 DESCRIPTION
 392         This is used to fill in an empty howto entry in an array.
 393
 394 .#define EMPTY_HOWTO(C) \
 395 .  HOWTO ((C), 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL, \
 396 .         NULL, FALSE, 0, 0, FALSE)
 397 .
 398
 399 DESCRIPTION
 400         Helper routine to turn a symbol into a relocation value.
 401
 402 .#define HOWTO_PREPARE(relocation, symbol)               \
 403 .  {                                                     \
 404 .    if (symbol != NULL)                                 \
 405 .      {                                                 \
 406 .        if (bfd_is_com_section (symbol->section))       \
 407 .          {                                             \
 408 .            relocation = 0;                             \
 409 .          }                                             \
 410 .        else                                            \
 411 .          {                                             \
 412 .            relocation = symbol->value;                 \
 413 .          }                                             \
 414 .      }                                                 \
 415 .  }
 416 .
 417 */
 418
 419 /*
 420 FUNCTION
 421         bfd_get_reloc_size
 422
 423 SYNOPSIS
 424         unsigned int bfd_get_reloc_size (reloc_howto_type *);
 425
 426 DESCRIPTION
 427         For a reloc_howto_type that operates on a fixed number of bytes,
 428         this returns the number of bytes operated on.
 429  */
 430
 431 unsigned int
 432 bfd_get_reloc_size (reloc_howto_type *howto)
 433 {
 434   switch (howto->size)
 435     {
 436     case 0: return 1;
 437     case 1: return 2;
 438     case 2: return 4;
 439     case 3: return 0;
 440     case 4: return 8;
 441     case 8: return 16;
 442     case -2: return 4;
 443     default: abort ();
 444     }
 445 }
 446
 447 /*
 448 TYPEDEF
 449         arelent_chain
 450
 451 DESCRIPTION
 452
 453         How relocs are tied together in an <<asection>>:
 454
 455 .typedef struct relent_chain
 456 .{
 457 .  arelent relent;
 458 .  struct relent_chain *next;
 459 .}
 460 .arelent_chain;
 461 .
 462 */
 463
 464 /* N_ONES produces N one bits, without overflowing machine arithmetic.  */
 465 #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1)
 466
 467 /*
 468 FUNCTION
 469         bfd_check_overflow
 470
 471 SYNOPSIS
 472         bfd_reloc_status_type bfd_check_overflow
 473           (enum complain_overflow how,
 474            unsigned int bitsize,
 475            unsigned int rightshift,
 476            unsigned int addrsize,
 477            bfd_vma relocation);
 478
 479 DESCRIPTION
 480         Perform overflow checking on @var{relocation} which has
 481         @var{bitsize} significant bits and will be shifted right by
 482         @var{rightshift} bits, on a machine with addresses containing
 483         @var{addrsize} significant bits.  The result is either of
 484         @code{bfd_reloc_ok} or @code{bfd_reloc_overflow}.
 485
 486 */
 487
 488 bfd_reloc_status_type
 489 bfd_check_overflow (enum complain_overflow how,
 490                     unsigned int bitsize,
 491                     unsigned int rightshift,
 492                     unsigned int addrsize,
 493                     bfd_vma relocation)
 494 {
 495   bfd_vma fieldmask, addrmask, signmask, ss, a;
 496   bfd_reloc_status_type flag = bfd_reloc_ok;
 497
 498   a = relocation;
 499
 500   /* Note: BITSIZE should always be <= ADDRSIZE, but in case it's not,
 501      we'll be permissive: extra bits in the field mask will
 502      automatically extend the address mask for purposes of the
 503      overflow check.  */
 504   fieldmask = N_ONES (bitsize);
 505   addrmask = N_ONES (addrsize) | fieldmask;
 506
 507   switch (how)
 508     {
 509     case complain_overflow_dont:
 510       break;
 511
 512     case complain_overflow_signed:
 513       /* If any sign bits are set, all sign bits must be set.  That
 514          is, A must be a valid negative address after shifting.  */
 515       a = (a & addrmask) >> rightshift;
 516       signmask = ~ (fieldmask >> 1);
 517       ss = a & signmask;
 518       if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
 519         flag = bfd_reloc_overflow;
 520       break;
 521
 522     case complain_overflow_unsigned:
 523       /* We have an overflow if the address does not fit in the field.  */
 524       a = (a & addrmask) >> rightshift;
 525       if ((a & ~ fieldmask) != 0)
 526         flag = bfd_reloc_overflow;
 527       break;
 528
 529     case complain_overflow_bitfield:
 530       /* Bitfields are sometimes signed, sometimes unsigned.  We
 531          explicitly allow an address wrap too, which means a bitfield
 532          of n bits is allowed to store -2**n to 2**n-1.  Thus overflow
 533          if the value has some, but not all, bits set outside the
 534          field.  */
 535       a >>= rightshift;
 536       ss = a & ~ fieldmask;
 537       if (ss != 0 && ss != (((bfd_vma) -1 >> rightshift) & ~ fieldmask))
 538         flag = bfd_reloc_overflow;
 539       break;
 540
 541     default:
 542       abort ();
 543     }
 544
 545   return flag;
 546 }
 547
 548 /*
 549 FUNCTION
 550         bfd_perform_relocation
 551
 552 SYNOPSIS
 553         bfd_reloc_status_type bfd_perform_relocation
 554           (bfd *abfd,
 555            arelent *reloc_entry,
 556            void *data,
 557            asection *input_section,
 558            bfd *output_bfd,
 559            char **error_message);
 560
 561 DESCRIPTION
 562         If @var{output_bfd} is supplied to this function, the
 563         generated image will be relocatable; the relocations are
 564         copied to the output file after they have been changed to
 565         reflect the new state of the world. There are two ways of
 566         reflecting the results of partial linkage in an output file:
 567         by modifying the output data in place, and by modifying the
 568         relocation record.  Some native formats (e.g., basic a.out and
 569         basic coff) have no way of specifying an addend in the
 570         relocation type, so the addend has to go in the output data.
 571         This is no big deal since in these formats the output data
 572         slot will always be big enough for the addend. Complex reloc
 573         types with addends were invented to solve just this problem.
 574         The @var{error_message} argument is set to an error message if
 575         this return @code{bfd_reloc_dangerous}.
 576
 577 */
 578
 579 bfd_reloc_status_type
 580 bfd_perform_relocation (bfd *abfd,
 581                         arelent *reloc_entry,
 582                         void *data,
 583                         asection *input_section,
 584                         bfd *output_bfd,
 585                         char **error_message)
 586 {
 587   bfd_vma relocation;
 588   bfd_reloc_status_type flag = bfd_reloc_ok;
 589   bfd_size_type octets = reloc_entry->address * bfd_octets_per_byte (abfd);
 590   bfd_vma output_base = 0;
 591   reloc_howto_type *howto = reloc_entry->howto;
 592   asection *reloc_target_output_section;
 593   asymbol *symbol;
 594
 595   symbol = *(reloc_entry->sym_ptr_ptr);
 596   if (bfd_is_abs_section (symbol->section)
 597       && output_bfd != NULL)
 598     {
 599       reloc_entry->address += input_section->output_offset;
 600       return bfd_reloc_ok;
 601     }
 602
 603   /* If we are not producing relocatable output, return an error if
 604      the symbol is not defined.  An undefined weak symbol is
 605      considered to have a value of zero (SVR4 ABI, p. 4-27).  */
 606   if (bfd_is_und_section (symbol->section)
 607       && (symbol->flags & BSF_WEAK) == 0
 608       && output_bfd == NULL)
 609     flag = bfd_reloc_undefined;
 610
 611   /* If there is a function supplied to handle this relocation type,
 612      call it.  It'll return `bfd_reloc_continue' if further processing
 613      can be done.  */
 614   if (howto->special_function)
 615     {
 616       bfd_reloc_status_type cont;
 617       cont = howto->special_function (abfd, reloc_entry, symbol, data,
 618                                       input_section, output_bfd,
 619                                       error_message);
 620       if (cont != bfd_reloc_continue)
 621         return cont;
 622     }
 623
 624   /* Is the address of the relocation really within the section?  */
 625   if (reloc_entry->address > (input_section->_cooked_size
 626                               / bfd_octets_per_byte (abfd)))
 627     return bfd_reloc_outofrange;
 628
 629   /* Work out which section the relocation is targetted at and the
 630      initial relocation command value.  */
 631
 632   /* Get symbol value.  (Common symbols are special.)  */
 633   if (bfd_is_com_section (symbol->section))
 634     relocation = 0;
 635   else
 636     relocation = symbol->value;
 637
 638   reloc_target_output_section = symbol->section->output_section;
 639
 640   /* Convert input-section-relative symbol value to absolute.  */
 641   if ((output_bfd && ! howto->partial_inplace)
 642       || reloc_target_output_section == NULL)
 643     output_base = 0;
 644   else
 645     output_base = reloc_target_output_section->vma;
 646
 647   relocation += output_base + symbol->section->output_offset;
 648
 649   /* Add in supplied addend.  */
 650   relocation += reloc_entry->addend;
 651
 652   /* Here the variable relocation holds the final address of the
 653      symbol we are relocating against, plus any addend.  */
 654
 655   if (howto->pc_relative)
 656     {
 657       /* This is a PC relative relocation.  We want to set RELOCATION
 658          to the distance between the address of the symbol and the
 659          location.  RELOCATION is already the address of the symbol.
 660
 661          We start by subtracting the address of the section containing
 662          the location.
 663
 664          If pcrel_offset is set, we must further subtract the position
 665          of the location within the section.  Some targets arrange for
 666          the addend to be the negative of the position of the location
 667          within the section; for example, i386-aout does this.  For
 668          i386-aout, pcrel_offset is FALSE.  Some other targets do not
 669          include the position of the location; for example, m88kbcs,
 670          or ELF.  For those targets, pcrel_offset is TRUE.
 671
 672          If we are producing relocatable output, then we must ensure
 673          that this reloc will be correctly computed when the final
 674          relocation is done.  If pcrel_offset is FALSE we want to wind
 675          up with the negative of the location within the section,
 676          which means we must adjust the existing addend by the change
 677          in the location within the section.  If pcrel_offset is TRUE
 678          we do not want to adjust the existing addend at all.
 679
 680          FIXME: This seems logical to me, but for the case of
 681          producing relocatable output it is not what the code
 682          actually does.  I don't want to change it, because it seems
 683          far too likely that something will break.  */
 684
 685       relocation -=
 686         input_section->output_section->vma + input_section->output_offset;
 687
 688       if (howto->pcrel_offset)
 689         relocation -= reloc_entry->address;
 690     }
 691
 692   if (output_bfd != NULL)
 693     {
 694       if (! howto->partial_inplace)
 695         {
 696           /* This is a partial relocation, and we want to apply the relocation
 697              to the reloc entry rather than the raw data. Modify the reloc
 698              inplace to reflect what we now know.  */
 699           reloc_entry->addend = relocation;
 700           reloc_entry->address += input_section->output_offset;
 701           return flag;
 702         }
 703       else
 704         {
 705           /* This is a partial relocation, but inplace, so modify the
 706              reloc record a bit.
 707
 708              If we've relocated with a symbol with a section, change
 709              into a ref to the section belonging to the symbol.  */
 710
 711           reloc_entry->address += input_section->output_offset;
 712
 713           /* WTF?? */
 714           if (abfd->xvec->flavour == bfd_target_coff_flavour
 715               && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
 716               && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
 717             {
 718 #if 1
 719               /* For m68k-coff, the addend was being subtracted twice during
 720                  relocation with -r.  Removing the line below this comment
 721                  fixes that problem; see PR 2953.
 722
 723 However, Ian wrote the following, regarding removing the line below,
 724 which explains why it is still enabled:  --djm
 725
 726 If you put a patch like that into BFD you need to check all the COFF
 727 linkers.  I am fairly certain that patch will break coff-i386 (e.g.,
 728 SCO); see coff_i386_reloc in coff-i386.c where I worked around the
 729 problem in a different way.  There may very well be a reason that the
 730 code works as it does.
 731
 732 Hmmm.  The first obvious point is that bfd_perform_relocation should
 733 not have any tests that depend upon the flavour.  It's seem like
 734 entirely the wrong place for such a thing.  The second obvious point
 735 is that the current code ignores the reloc addend when producing
 736 relocatable output for COFF.  That's peculiar.  In fact, I really
 737 have no idea what the point of the line you want to remove is.
 738
 739 A typical COFF reloc subtracts the old value of the symbol and adds in
 740 the new value to the location in the object file (if it's a pc
 741 relative reloc it adds the difference between the symbol value and the
 742 location).  When relocating we need to preserve that property.
 743
 744 BFD handles this by setting the addend to the negative of the old
 745 value of the symbol.  Unfortunately it handles common symbols in a
 746 non-standard way (it doesn't subtract the old value) but that's a
 747 different story (we can't change it without losing backward
 748 compatibility with old object files) (coff-i386 does subtract the old
 749 value, to be compatible with existing coff-i386 targets, like SCO).
 750
 751 So everything works fine when not producing relocatable output.  When
 752 we are producing relocatable output, logically we should do exactly
 753 what we do when not producing relocatable output.  Therefore, your
 754 patch is correct.  In fact, it should probably always just set
 755 reloc_entry->addend to 0 for all cases, since it is, in fact, going to
 756 add the value into the object file.  This won't hurt the COFF code,
 757 which doesn't use the addend; I'm not sure what it will do to other
 758 formats (the thing to check for would be whether any formats both use
 759 the addend and set partial_inplace).
 760
 761 When I wanted to make coff-i386 produce relocatable output, I ran
 762 into the problem that you are running into: I wanted to remove that
 763 line.  Rather than risk it, I made the coff-i386 relocs use a special
 764 function; it's coff_i386_reloc in coff-i386.c.  The function
 765 specifically adds the addend field into the object file, knowing that
 766 bfd_perform_relocation is not going to.  If you remove that line, then
 767 coff-i386.c will wind up adding the addend field in twice.  It's
 768 trivial to fix; it just needs to be done.
 769
 770 The problem with removing the line is just that it may break some
 771 working code.  With BFD it's hard to be sure of anything.  The right
 772 way to deal with this is simply to build and test at least all the
 773 supported COFF targets.  It should be straightforward if time and disk
 774 space consuming.  For each target:
 775     1) build the linker
 776     2) generate some executable, and link it using -r (I would
 777        probably use paranoia.o and link against newlib/libc.a, which
 778        for all the supported targets would be available in
 779        /usr/cygnus/progressive/H-host/target/lib/libc.a).
 780     3) make the change to reloc.c
 781     4) rebuild the linker
 782     5) repeat step 2
 783     6) if the resulting object files are the same, you have at least
 784        made it no worse
 785     7) if they are different you have to figure out which version is
 786        right
 787 */
 788               relocation -= reloc_entry->addend;
 789 #endif
 790               reloc_entry->addend = 0;
 791             }
 792           else
 793             {
 794               reloc_entry->addend = relocation;
 795             }
 796         }
 797     }
 798   else
 799     {
 800       reloc_entry->addend = 0;
 801     }
 802
 803   /* FIXME: This overflow checking is incomplete, because the value
 804      might have overflowed before we get here.  For a correct check we
 805      need to compute the value in a size larger than bitsize, but we
 806      can't reasonably do that for a reloc the same size as a host
 807      machine word.
 808      FIXME: We should also do overflow checking on the result after
 809      adding in the value contained in the object file.  */
 810   if (howto->complain_on_overflow != complain_overflow_dont
 811       && flag == bfd_reloc_ok)
 812     flag = bfd_check_overflow (howto->complain_on_overflow,
 813                                howto->bitsize,
 814                                howto->rightshift,
 815                                bfd_arch_bits_per_address (abfd),
 816                                relocation);
 817
 818   /* Either we are relocating all the way, or we don't want to apply
 819      the relocation to the reloc entry (probably because there isn't
 820      any room in the output format to describe addends to relocs).  */
 821
 822   /* The cast to bfd_vma avoids a bug in the Alpha OSF/1 C compiler
 823      (OSF version 1.3, compiler version 3.11).  It miscompiles the
 824      following program:
 825
 826      struct str
 827      {
 828        unsigned int i0;
 829      } s = { 0 };
 830
 831      int
 832      main ()
 833      {
 834        unsigned long x;
 835
 836        x = 0x100000000;
 837        x <<= (unsigned long) s.i0;
 838        if (x == 0)
 839          printf ("failed\n");
 840        else
 841          printf ("succeeded (%lx)\n", x);
 842      }
 843      */
 844
 845   relocation >>= (bfd_vma) howto->rightshift;
 846
 847   /* Shift everything up to where it's going to be used.  */
 848   relocation <<= (bfd_vma) howto->bitpos;
 849
 850   /* Wait for the day when all have the mask in them.  */
 851
 852   /* What we do:
 853      i instruction to be left alone
 854      o offset within instruction
 855      r relocation offset to apply
 856      S src mask
 857      D dst mask
 858      N ~dst mask
 859      A part 1
 860      B part 2
 861      R result
 862
 863      Do this:
 864      ((  i i i i i o o o o o  from bfd_get<size>
 865      and           S S S S S) to get the size offset we want
 866      +   r r r r r r r r r r) to get the final value to place
 867      and           D D D D D  to chop to right size
 868      -----------------------
 869      =             A A A A A
 870      And this:
 871      (   i i i i i o o o o o  from bfd_get<size>
 872      and N N N N N          ) get instruction
 873      -----------------------
 874      =   B B B B B
 875
 876      And then:
 877      (   B B B B B
 878      or            A A A A A)
 879      -----------------------
 880      =   R R R R R R R R R R  put into bfd_put<size>
 881      */
 882
 883 #define DOIT(x) \
 884   x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) +  relocation) & howto->dst_mask))
 885
 886   switch (howto->size)
 887     {
 888     case 0:
 889       {
 890         char x = bfd_get_8 (abfd, (char *) data + octets);
 891         DOIT (x);
 892         bfd_put_8 (abfd, x, (unsigned char *) data + octets);
 893       }
 894       break;
 895
 896     case 1:
 897       {
 898         short x = bfd_get_16 (abfd, (bfd_byte *) data + octets);
 899         DOIT (x);
 900         bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data + octets);
 901       }
 902       break;
 903     case 2:
 904       {
 905         long x = bfd_get_32 (abfd, (bfd_byte *) data + octets);
 906         DOIT (x);
 907         bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 908       }
 909       break;
 910     case -2:
 911       {
 912         long x = bfd_get_32 (abfd, (bfd_byte *) data + octets);
 913         relocation = -relocation;
 914         DOIT (x);
 915         bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 916       }
 917       break;
 918
 919     case -1:
 920       {
 921         long x = bfd_get_16 (abfd, (bfd_byte *) data + octets);
 922         relocation = -relocation;
 923         DOIT (x);
 924         bfd_put_16 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
 925       }
 926       break;
 927
 928     case 3:
 929       /* Do nothing */
 930       break;
 931
 932     case 4:
 933 #ifdef BFD64
 934       {
 935         bfd_vma x = bfd_get_64 (abfd, (bfd_byte *) data + octets);
 936         DOIT (x);
 937         bfd_put_64 (abfd, x, (bfd_byte *) data + octets);
 938       }
 939 #else
 940       abort ();
 941 #endif
 942       break;
 943     default:
 944       return bfd_reloc_other;
 945     }
 946
 947   return flag;
 948 }
 949
 950 /*
 951 FUNCTION
 952         bfd_install_relocation
 953
 954 SYNOPSIS
 955         bfd_reloc_status_type bfd_install_relocation
 956           (bfd *abfd,
 957            arelent *reloc_entry,
 958            void *data, bfd_vma data_start,
 959            asection *input_section,
 960            char **error_message);
 961
 962 DESCRIPTION
 963         This looks remarkably like <<bfd_perform_relocation>>, except it
 964         does not expect that the section contents have been filled in.
 965         I.e., it's suitable for use when creating, rather than applying
 966         a relocation.
 967
 968         For now, this function should be considered reserved for the
 969         assembler.
 970 */
 971
 972 bfd_reloc_status_type
 973 bfd_install_relocation (bfd *abfd,
 974                         arelent *reloc_entry,
 975                         void *data_start,
 976                         bfd_vma data_start_offset,
 977                         asection *input_section,
 978                         char **error_message)
 979 {
 980   bfd_vma relocation;
 981   bfd_reloc_status_type flag = bfd_reloc_ok;
 982   bfd_size_type octets = reloc_entry->address * bfd_octets_per_byte (abfd);
 983   bfd_vma output_base = 0;
 984   reloc_howto_type *howto = reloc_entry->howto;
 985   asection *reloc_target_output_section;
 986   asymbol *symbol;
 987   bfd_byte *data;
 988
 989   symbol = *(reloc_entry->sym_ptr_ptr);
 990   if (bfd_is_abs_section (symbol->section))
 991     {
 992       reloc_entry->address += input_section->output_offset;
 993       return bfd_reloc_ok;
 994     }
 995
 996   /* If there is a function supplied to handle this relocation type,
 997      call it.  It'll return `bfd_reloc_continue' if further processing
 998      can be done.  */
 999   if (howto->special_function)
1000     {
1001       bfd_reloc_status_type cont;
1002
1003       /* XXX - The special_function calls haven't been fixed up to deal
1004          with creating new relocations and section contents.  */
1005       cont = howto->special_function (abfd, reloc_entry, symbol,
1006                                       /* XXX - Non-portable! */
1007                                       ((bfd_byte *) data_start
1008                                        - data_start_offset),
1009                                       input_section, abfd, error_message);
1010       if (cont != bfd_reloc_continue)
1011         return cont;
1012     }
1013
1014   /* Is the address of the relocation really within the section?  */
1015   if (reloc_entry->address > (input_section->_cooked_size
1016                               / bfd_octets_per_byte (abfd)))
1017     return bfd_reloc_outofrange;
1018
1019   /* Work out which section the relocation is targetted at and the
1020      initial relocation command value.  */
1021
1022   /* Get symbol value.  (Common symbols are special.)  */
1023   if (bfd_is_com_section (symbol->section))
1024     relocation = 0;
1025   else
1026     relocation = symbol->value;
1027
1028   reloc_target_output_section = symbol->section->output_section;
1029
1030   /* Convert input-section-relative symbol value to absolute.  */
1031   if (! howto->partial_inplace)
1032     output_base = 0;
1033   else
1034     output_base = reloc_target_output_section->vma;
1035
1036   relocation += output_base + symbol->section->output_offset;
1037
1038   /* Add in supplied addend.  */
1039   relocation += reloc_entry->addend;
1040
1041   /* Here the variable relocation holds the final address of the
1042      symbol we are relocating against, plus any addend.  */
1043
1044   if (howto->pc_relative)
1045     {
1046       /* This is a PC relative relocation.  We want to set RELOCATION
1047          to the distance between the address of the symbol and the
1048          location.  RELOCATION is already the address of the symbol.
1049
1050          We start by subtracting the address of the section containing
1051          the location.
1052
1053          If pcrel_offset is set, we must further subtract the position
1054          of the location within the section.  Some targets arrange for
1055          the addend to be the negative of the position of the location
1056          within the section; for example, i386-aout does this.  For
1057          i386-aout, pcrel_offset is FALSE.  Some other targets do not
1058          include the position of the location; for example, m88kbcs,
1059          or ELF.  For those targets, pcrel_offset is TRUE.
1060
1061          If we are producing relocatable output, then we must ensure
1062          that this reloc will be correctly computed when the final
1063          relocation is done.  If pcrel_offset is FALSE we want to wind
1064          up with the negative of the location within the section,
1065          which means we must adjust the existing addend by the change
1066          in the location within the section.  If pcrel_offset is TRUE
1067          we do not want to adjust the existing addend at all.
1068
1069          FIXME: This seems logical to me, but for the case of
1070          producing relocatable output it is not what the code
1071          actually does.  I don't want to change it, because it seems
1072          far too likely that something will break.  */
1073
1074       relocation -=
1075         input_section->output_section->vma + input_section->output_offset;
1076
1077       if (howto->pcrel_offset && howto->partial_inplace)
1078         relocation -= reloc_entry->address;
1079     }
1080
1081   if (! howto->partial_inplace)
1082     {
1083       /* This is a partial relocation, and we want to apply the relocation
1084          to the reloc entry rather than the raw data. Modify the reloc
1085          inplace to reflect what we now know.  */
1086       reloc_entry->addend = relocation;
1087       reloc_entry->address += input_section->output_offset;
1088       return flag;
1089     }
1090   else
1091     {
1092       /* This is a partial relocation, but inplace, so modify the
1093          reloc record a bit.
1094
1095          If we've relocated with a symbol with a section, change
1096          into a ref to the section belonging to the symbol.  */
1097       reloc_entry->address += input_section->output_offset;
1098
1099       /* WTF?? */
1100       if (abfd->xvec->flavour == bfd_target_coff_flavour
1101           && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
1102           && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
1103         {
1104 #if 1
1105 /* For m68k-coff, the addend was being subtracted twice during
1106    relocation with -r.  Removing the line below this comment
1107    fixes that problem; see PR 2953.
1108
1109 However, Ian wrote the following, regarding removing the line below,
1110 which explains why it is still enabled:  --djm
1111
1112 If you put a patch like that into BFD you need to check all the COFF
1113 linkers.  I am fairly certain that patch will break coff-i386 (e.g.,
1114 SCO); see coff_i386_reloc in coff-i386.c where I worked around the
1115 problem in a different way.  There may very well be a reason that the
1116 code works as it does.
1117
1118 Hmmm.  The first obvious point is that bfd_install_relocation should
1119 not have any tests that depend upon the flavour.  It's seem like
1120 entirely the wrong place for such a thing.  The second obvious point
1121 is that the current code ignores the reloc addend when producing
1122 relocatable output for COFF.  That's peculiar.  In fact, I really
1123 have no idea what the point of the line you want to remove is.
1124
1125 A typical COFF reloc subtracts the old value of the symbol and adds in
1126 the new value to the location in the object file (if it's a pc
1127 relative reloc it adds the difference between the symbol value and the
1128 location).  When relocating we need to preserve that property.
1129
1130 BFD handles this by setting the addend to the negative of the old
1131 value of the symbol.  Unfortunately it handles common symbols in a
1132 non-standard way (it doesn't subtract the old value) but that's a
1133 different story (we can't change it without losing backward
1134 compatibility with old object files) (coff-i386 does subtract the old
1135 value, to be compatible with existing coff-i386 targets, like SCO).
1136
1137 So everything works fine when not producing relocatable output.  When
1138 we are producing relocatable output, logically we should do exactly
1139 what we do when not producing relocatable output.  Therefore, your
1140 patch is correct.  In fact, it should probably always just set
1141 reloc_entry->addend to 0 for all cases, since it is, in fact, going to
1142 add the value into the object file.  This won't hurt the COFF code,
1143 which doesn't use the addend; I'm not sure what it will do to other
1144 formats (the thing to check for would be whether any formats both use
1145 the addend and set partial_inplace).
1146
1147 When I wanted to make coff-i386 produce relocatable output, I ran
1148 into the problem that you are running into: I wanted to remove that
1149 line.  Rather than risk it, I made the coff-i386 relocs use a special
1150 function; it's coff_i386_reloc in coff-i386.c.  The function
1151 specifically adds the addend field into the object file, knowing that
1152 bfd_install_relocation is not going to.  If you remove that line, then
1153 coff-i386.c will wind up adding the addend field in twice.  It's
1154 trivial to fix; it just needs to be done.
1155
1156 The problem with removing the line is just that it may break some
1157 working code.  With BFD it's hard to be sure of anything.  The right
1158 way to deal with this is simply to build and test at least all the
1159 supported COFF targets.  It should be straightforward if time and disk
1160 space consuming.  For each target:
1161     1) build the linker
1162     2) generate some executable, and link it using -r (I would
1163        probably use paranoia.o and link against newlib/libc.a, which
1164        for all the supported targets would be available in
1165        /usr/cygnus/progressive/H-host/target/lib/libc.a).
1166     3) make the change to reloc.c
1167     4) rebuild the linker
1168     5) repeat step 2
1169     6) if the resulting object files are the same, you have at least
1170        made it no worse
1171     7) if they are different you have to figure out which version is
1172        right.  */
1173           relocation -= reloc_entry->addend;
1174 #endif
1175           reloc_entry->addend = 0;
1176         }
1177       else
1178         {
1179           reloc_entry->addend = relocation;
1180         }
1181     }
1182
1183   /* FIXME: This overflow checking is incomplete, because the value
1184      might have overflowed before we get here.  For a correct check we
1185      need to compute the value in a size larger than bitsize, but we
1186      can't reasonably do that for a reloc the same size as a host
1187      machine word.
1188      FIXME: We should also do overflow checking on the result after
1189      adding in the value contained in the object file.  */
1190   if (howto->complain_on_overflow != complain_overflow_dont)
1191     flag = bfd_check_overflow (howto->complain_on_overflow,
1192                                howto->bitsize,
1193                                howto->rightshift,
1194                                bfd_arch_bits_per_address (abfd),
1195                                relocation);
1196
1197   /* Either we are relocating all the way, or we don't want to apply
1198      the relocation to the reloc entry (probably because there isn't
1199      any room in the output format to describe addends to relocs).  */
1200
1201   /* The cast to bfd_vma avoids a bug in the Alpha OSF/1 C compiler
1202      (OSF version 1.3, compiler version 3.11).  It miscompiles the
1203      following program:
1204
1205      struct str
1206      {
1207        unsigned int i0;
1208      } s = { 0 };
1209
1210      int
1211      main ()
1212      {
1213        unsigned long x;
1214
1215        x = 0x100000000;
1216        x <<= (unsigned long) s.i0;
1217        if (x == 0)
1218          printf ("failed\n");
1219        else
1220          printf ("succeeded (%lx)\n", x);
1221      }
1222      */
1223
1224   relocation >>= (bfd_vma) howto->rightshift;
1225
1226   /* Shift everything up to where it's going to be used.  */
1227   relocation <<= (bfd_vma) howto->bitpos;
1228
1229   /* Wait for the day when all have the mask in them.  */
1230
1231   /* What we do:
1232      i instruction to be left alone
1233      o offset within instruction
1234      r relocation offset to apply
1235      S src mask
1236      D dst mask
1237      N ~dst mask
1238      A part 1
1239      B part 2
1240      R result
1241
1242      Do this:
1243      ((  i i i i i o o o o o  from bfd_get<size>
1244      and           S S S S S) to get the size offset we want
1245      +   r r r r r r r r r r) to get the final value to place
1246      and           D D D D D  to chop to right size
1247      -----------------------
1248      =             A A A A A
1249      And this:
1250      (   i i i i i o o o o o  from bfd_get<size>
1251      and N N N N N          ) get instruction
1252      -----------------------
1253      =   B B B B B
1254
1255      And then:
1256      (   B B B B B
1257      or            A A A A A)
1258      -----------------------
1259      =   R R R R R R R R R R  put into bfd_put<size>
1260      */
1261
1262 #define DOIT(x) \
1263   x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) +  relocation) & howto->dst_mask))
1264
1265   data = (bfd_byte *) data_start + (octets - data_start_offset);
1266
1267   switch (howto->size)
1268     {
1269     case 0:
1270       {
1271         char x = bfd_get_8 (abfd, data);
1272         DOIT (x);
1273         bfd_put_8 (abfd, x, data);
1274       }
1275       break;
1276
1277     case 1:
1278       {
1279         short x = bfd_get_16 (abfd, data);
1280         DOIT (x);
1281         bfd_put_16 (abfd, (bfd_vma) x, data);
1282       }
1283       break;
1284     case 2:
1285       {
1286         long x = bfd_get_32 (abfd, data);
1287         DOIT (x);
1288         bfd_put_32 (abfd, (bfd_vma) x, data);
1289       }
1290       break;
1291     case -2:
1292       {
1293         long x = bfd_get_32 (abfd, data);
1294         relocation = -relocation;
1295         DOIT (x);
1296         bfd_put_32 (abfd, (bfd_vma) x, data);
1297       }
1298       break;
1299
1300     case 3:
1301       /* Do nothing */
1302       break;
1303
1304     case 4:
1305       {
1306         bfd_vma x = bfd_get_64 (abfd, data);
1307         DOIT (x);
1308         bfd_put_64 (abfd, x, data);
1309       }
1310       break;
1311     default:
1312       return bfd_reloc_other;
1313     }
1314
1315   return flag;
1316 }
1317
1318 /* This relocation routine is used by some of the backend linkers.
1319    They do not construct asymbol or arelent structures, so there is no
1320    reason for them to use bfd_perform_relocation.  Also,
1321    bfd_perform_relocation is so hacked up it is easier to write a new
1322    function than to try to deal with it.
1323
1324    This routine does a final relocation.  Whether it is useful for a
1325    relocatable link depends upon how the object format defines
1326    relocations.
1327
1328    FIXME: This routine ignores any special_function in the HOWTO,
1329    since the existing special_function values have been written for
1330    bfd_perform_relocation.
1331
1332    HOWTO is the reloc howto information.
1333    INPUT_BFD is the BFD which the reloc applies to.
1334    INPUT_SECTION is the section which the reloc applies to.
1335    CONTENTS is the contents of the section.
1336    ADDRESS is the address of the reloc within INPUT_SECTION.
1337    VALUE is the value of the symbol the reloc refers to.
1338    ADDEND is the addend of the reloc.  */
1339
1340 bfd_reloc_status_type
1341 _bfd_final_link_relocate (reloc_howto_type *howto,
1342                           bfd *input_bfd,
1343                           asection *input_section,
1344                           bfd_byte *contents,
1345                           bfd_vma address,
1346                           bfd_vma value,
1347                           bfd_vma addend)
1348 {
1349   bfd_vma relocation;
1350
1351   /* Sanity check the address.  */
1352   if (address > input_section->_raw_size)
1353     return bfd_reloc_outofrange;
1354
1355   /* This function assumes that we are dealing with a basic relocation
1356      against a symbol.  We want to compute the value of the symbol to
1357      relocate to.  This is just VALUE, the value of the symbol, plus
1358      ADDEND, any addend associated with the reloc.  */
1359   relocation = value + addend;
1360
1361   /* If the relocation is PC relative, we want to set RELOCATION to
1362      the distance between the symbol (currently in RELOCATION) and the
1363      location we are relocating.  Some targets (e.g., i386-aout)
1364      arrange for the contents of the section to be the negative of the
1365      offset of the location within the section; for such targets
1366      pcrel_offset is FALSE.  Other targets (e.g., m88kbcs or ELF)
1367      simply leave the contents of the section as zero; for such
1368      targets pcrel_offset is TRUE.  If pcrel_offset is FALSE we do not
1369      need to subtract out the offset of the location within the
1370      section (which is just ADDRESS).  */
1371   if (howto->pc_relative)
1372     {
1373       relocation -= (input_section->output_section->vma
1374                      + input_section->output_offset);
1375       if (howto->pcrel_offset)
1376         relocation -= address;
1377     }
1378
1379   return _bfd_relocate_contents (howto, input_bfd, relocation,
1380                                  contents + address);
1381 }
1382
1383 /* Relocate a given location using a given value and howto.  */
1384
1385 bfd_reloc_status_type
1386 _bfd_relocate_contents (reloc_howto_type *howto,
1387                         bfd *input_bfd,
1388                         bfd_vma relocation,
1389                         bfd_byte *location)
1390 {
1391   int size;
1392   bfd_vma x = 0;
1393   bfd_reloc_status_type flag;
1394   unsigned int rightshift = howto->rightshift;
1395   unsigned int bitpos = howto->bitpos;
1396
1397   /* If the size is negative, negate RELOCATION.  This isn't very
1398      general.  */
1399   if (howto->size < 0)
1400     relocation = -relocation;
1401
1402   /* Get the value we are going to relocate.  */
1403   size = bfd_get_reloc_size (howto);
1404   switch (size)
1405     {
1406     default:
1407     case 0:
1408       abort ();
1409     case 1:
1410       x = bfd_get_8 (input_bfd, location);
1411       break;
1412     case 2:
1413       x = bfd_get_16 (input_bfd, location);
1414       break;
1415     case 4:
1416       x = bfd_get_32 (input_bfd, location);
1417       break;
1418     case 8:
1419 #ifdef BFD64
1420       x = bfd_get_64 (input_bfd, location);
1421 #else
1422       abort ();
1423 #endif
1424       break;
1425     }
1426
1427   /* Check for overflow.  FIXME: We may drop bits during the addition
1428      which we don't check for.  We must either check at every single
1429      operation, which would be tedious, or we must do the computations
1430      in a type larger than bfd_vma, which would be inefficient.  */
1431   flag = bfd_reloc_ok;
1432   if (howto->complain_on_overflow != complain_overflow_dont)
1433     {
1434       bfd_vma addrmask, fieldmask, signmask, ss;
1435       bfd_vma a, b, sum;
1436
1437       /* Get the values to be added together.  For signed and unsigned
1438          relocations, we assume that all values should be truncated to
1439          the size of an address.  For bitfields, all the bits matter.
1440          See also bfd_check_overflow.  */
1441       fieldmask = N_ONES (howto->bitsize);
1442       addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask;
1443       a = relocation;
1444       b = x & howto->src_mask;
1445
1446       switch (howto->complain_on_overflow)
1447         {
1448         case complain_overflow_signed:
1449           a = (a & addrmask) >> rightshift;
1450
1451           /* If any sign bits are set, all sign bits must be set.
1452              That is, A must be a valid negative address after
1453              shifting.  */
1454           signmask = ~ (fieldmask >> 1);
1455           ss = a & signmask;
1456           if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
1457             flag = bfd_reloc_overflow;
1458
1459           /* We only need this next bit of code if the sign bit of B
1460              is below the sign bit of A.  This would only happen if
1461              SRC_MASK had fewer bits than BITSIZE.  Note that if
1462              SRC_MASK has more bits than BITSIZE, we can get into
1463              trouble; we would need to verify that B is in range, as
1464              we do for A above.  */
1465           signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1466
1467           /* Set all the bits above the sign bit.  */
1468           b = (b ^ signmask) - signmask;
1469
1470           b = (b & addrmask) >> bitpos;
1471
1472           /* Now we can do the addition.  */
1473           sum = a + b;
1474
1475           /* See if the result has the correct sign.  Bits above the
1476              sign bit are junk now; ignore them.  If the sum is
1477              positive, make sure we did not have all negative inputs;
1478              if the sum is negative, make sure we did not have all
1479              positive inputs.  The test below looks only at the sign
1480              bits, and it really just
1481                  SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
1482              */
1483           signmask = (fieldmask >> 1) + 1;
1484           if (((~ (a ^ b)) & (a ^ sum)) & signmask)
1485             flag = bfd_reloc_overflow;
1486
1487           break;
1488
1489         case complain_overflow_unsigned:
1490           /* Checking for an unsigned overflow is relatively easy:
1491              trim the addresses and add, and trim the result as well.
1492              Overflow is normally indicated when the result does not
1493              fit in the field.  However, we also need to consider the
1494              case when, e.g., fieldmask is 0x7fffffff or smaller, an
1495              input is 0x80000000, and bfd_vma is only 32 bits; then we
1496              will get sum == 0, but there is an overflow, since the
1497              inputs did not fit in the field.  Instead of doing a
1498              separate test, we can check for this by or-ing in the
1499              operands when testing for the sum overflowing its final
1500              field.  */
1501           a = (a & addrmask) >> rightshift;
1502           b = (b & addrmask) >> bitpos;
1503           sum = (a + b) & addrmask;
1504           if ((a | b | sum) & ~ fieldmask)
1505             flag = bfd_reloc_overflow;
1506
1507           break;
1508
1509         case complain_overflow_bitfield:
1510           /* Much like the signed check, but for a field one bit
1511              wider, and no trimming inputs with addrmask.  We allow a
1512              bitfield to represent numbers in the range -2**n to
1513              2**n-1, where n is the number of bits in the field.
1514              Note that when bfd_vma is 32 bits, a 32-bit reloc can't
1515              overflow, which is exactly what we want.  */
1516           a >>= rightshift;
1517
1518           signmask = ~ fieldmask;
1519           ss = a & signmask;
1520           if (ss != 0 && ss != (((bfd_vma) -1 >> rightshift) & signmask))
1521             flag = bfd_reloc_overflow;
1522
1523           signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1524           b = (b ^ signmask) - signmask;
1525
1526           b >>= bitpos;
1527
1528           sum = a + b;
1529
1530           /* We mask with addrmask here to explicitly allow an address
1531              wrap-around.  The Linux kernel relies on it, and it is
1532              the only way to write assembler code which can run when
1533              loaded at a location 0x80000000 away from the location at
1534              which it is linked.  */
1535           signmask = fieldmask + 1;
1536           if (((~ (a ^ b)) & (a ^ sum)) & signmask & addrmask)
1537             flag = bfd_reloc_overflow;
1538
1539           break;
1540
1541         default:
1542           abort ();
1543         }
1544     }
1545
1546   /* Put RELOCATION in the right bits.  */
1547   relocation >>= (bfd_vma) rightshift;
1548   relocation <<= (bfd_vma) bitpos;
1549
1550   /* Add RELOCATION to the right bits of X.  */
1551   x = ((x & ~howto->dst_mask)
1552        | (((x & howto->src_mask) + relocation) & howto->dst_mask));
1553
1554   /* Put the relocated value back in the object file.  */
1555   switch (size)
1556     {
1557     default:
1558     case 0:
1559       abort ();
1560     case 1:
1561       bfd_put_8 (input_bfd, x, location);
1562       break;
1563     case 2:
1564       bfd_put_16 (input_bfd, x, location);
1565       break;
1566     case 4:
1567       bfd_put_32 (input_bfd, x, location);
1568       break;
1569     case 8:
1570 #ifdef BFD64
1571       bfd_put_64 (input_bfd, x, location);
1572 #else
1573       abort ();
1574 #endif
1575       break;
1576     }
1577
1578   return flag;
1579 }
1580
1581 /*
1582 DOCDD
1583 INODE
1584         howto manager,  , typedef arelent, Relocations
1585
1586 SECTION
1587         The howto manager
1588
1589         When an application wants to create a relocation, but doesn't
1590         know what the target machine might call it, it can find out by
1591         using this bit of code.
1592
1593 */
1594
1595 /*
1596 TYPEDEF
1597         bfd_reloc_code_type
1598
1599 DESCRIPTION
1600         The insides of a reloc code.  The idea is that, eventually, there
1601         will be one enumerator for every type of relocation we ever do.
1602         Pass one of these values to <<bfd_reloc_type_lookup>>, and it'll
1603         return a howto pointer.
1604
1605         This does mean that the application must determine the correct
1606         enumerator value; you can't get a howto pointer from a random set
1607         of attributes.
1608
1609 SENUM
1610    bfd_reloc_code_real
1611
1612 ENUM
1613   BFD_RELOC_64
1614 ENUMX
1615   BFD_RELOC_32
1616 ENUMX
1617   BFD_RELOC_26
1618 ENUMX
1619   BFD_RELOC_24
1620 ENUMX
1621   BFD_RELOC_16
1622 ENUMX
1623   BFD_RELOC_14
1624 ENUMX
1625   BFD_RELOC_8
1626 ENUMDOC
1627   Basic absolute relocations of N bits.
1628
1629 ENUM
1630   BFD_RELOC_64_PCREL
1631 ENUMX
1632   BFD_RELOC_32_PCREL
1633 ENUMX
1634   BFD_RELOC_24_PCREL
1635 ENUMX
1636   BFD_RELOC_16_PCREL
1637 ENUMX
1638   BFD_RELOC_12_PCREL
1639 ENUMX
1640   BFD_RELOC_8_PCREL
1641 ENUMDOC
1642   PC-relative relocations.  Sometimes these are relative to the address
1643 of the relocation itself; sometimes they are relative to the start of
1644 the section containing the relocation.  It depends on the specific target.
1645
1646 The 24-bit relocation is used in some Intel 960 configurations.
1647
1648 ENUM
1649   BFD_RELOC_32_GOT_PCREL
1650 ENUMX
1651   BFD_RELOC_16_GOT_PCREL
1652 ENUMX
1653   BFD_RELOC_8_GOT_PCREL
1654 ENUMX
1655   BFD_RELOC_32_GOTOFF
1656 ENUMX
1657   BFD_RELOC_16_GOTOFF
1658 ENUMX
1659   BFD_RELOC_LO16_GOTOFF
1660 ENUMX
1661   BFD_RELOC_HI16_GOTOFF
1662 ENUMX
1663   BFD_RELOC_HI16_S_GOTOFF
1664 ENUMX
1665   BFD_RELOC_8_GOTOFF
1666 ENUMX
1667   BFD_RELOC_64_PLT_PCREL
1668 ENUMX
1669   BFD_RELOC_32_PLT_PCREL
1670 ENUMX
1671   BFD_RELOC_24_PLT_PCREL
1672 ENUMX
1673   BFD_RELOC_16_PLT_PCREL
1674 ENUMX
1675   BFD_RELOC_8_PLT_PCREL
1676 ENUMX
1677   BFD_RELOC_64_PLTOFF
1678 ENUMX
1679   BFD_RELOC_32_PLTOFF
1680 ENUMX
1681   BFD_RELOC_16_PLTOFF
1682 ENUMX
1683   BFD_RELOC_LO16_PLTOFF
1684 ENUMX
1685   BFD_RELOC_HI16_PLTOFF
1686 ENUMX
1687   BFD_RELOC_HI16_S_PLTOFF
1688 ENUMX
1689   BFD_RELOC_8_PLTOFF
1690 ENUMDOC
1691   For ELF.
1692
1693 ENUM
1694   BFD_RELOC_68K_GLOB_DAT
1695 ENUMX
1696   BFD_RELOC_68K_JMP_SLOT
1697 ENUMX
1698   BFD_RELOC_68K_RELATIVE
1699 ENUMDOC
1700   Relocations used by 68K ELF.
1701
1702 ENUM
1703   BFD_RELOC_32_BASEREL
1704 ENUMX
1705   BFD_RELOC_16_BASEREL
1706 ENUMX
1707   BFD_RELOC_LO16_BASEREL
1708 ENUMX
1709   BFD_RELOC_HI16_BASEREL
1710 ENUMX
1711   BFD_RELOC_HI16_S_BASEREL
1712 ENUMX
1713   BFD_RELOC_8_BASEREL
1714 ENUMX
1715   BFD_RELOC_RVA
1716 ENUMDOC
1717   Linkage-table relative.
1718
1719 ENUM
1720   BFD_RELOC_8_FFnn
1721 ENUMDOC
1722   Absolute 8-bit relocation, but used to form an address like 0xFFnn.
1723
1724 ENUM
1725   BFD_RELOC_32_PCREL_S2
1726 ENUMX
1727   BFD_RELOC_16_PCREL_S2
1728 ENUMX
1729   BFD_RELOC_23_PCREL_S2
1730 ENUMDOC
1731   These PC-relative relocations are stored as word displacements --
1732 i.e., byte displacements shifted right two bits.  The 30-bit word
1733 displacement (<<32_PCREL_S2>> -- 32 bits, shifted 2) is used on the
1734 SPARC.  (SPARC tools generally refer to this as <<WDISP30>>.)  The
1735 signed 16-bit displacement is used on the MIPS, and the 23-bit
1736 displacement is used on the Alpha.
1737
1738 ENUM
1739   BFD_RELOC_HI22
1740 ENUMX
1741   BFD_RELOC_LO10
1742 ENUMDOC
1743   High 22 bits and low 10 bits of 32-bit value, placed into lower bits of
1744 the target word.  These are used on the SPARC.
1745
1746 ENUM
1747   BFD_RELOC_GPREL16
1748 ENUMX
1749   BFD_RELOC_GPREL32
1750 ENUMDOC
1751   For systems that allocate a Global Pointer register, these are
1752 displacements off that register.  These relocation types are
1753 handled specially, because the value the register will have is
1754 decided relatively late.
1755
1756 ENUM
1757   BFD_RELOC_I960_CALLJ
1758 ENUMDOC
1759   Reloc types used for i960/b.out.
1760
1761 ENUM
1762   BFD_RELOC_NONE
1763 ENUMX
1764   BFD_RELOC_SPARC_WDISP22
1765 ENUMX
1766   BFD_RELOC_SPARC22
1767 ENUMX
1768   BFD_RELOC_SPARC13
1769 ENUMX
1770   BFD_RELOC_SPARC_GOT10
1771 ENUMX
1772   BFD_RELOC_SPARC_GOT13
1773 ENUMX
1774   BFD_RELOC_SPARC_GOT22
1775 ENUMX
1776   BFD_RELOC_SPARC_PC10
1777 ENUMX
1778   BFD_RELOC_SPARC_PC22
1779 ENUMX
1780   BFD_RELOC_SPARC_WPLT30
1781 ENUMX
1782   BFD_RELOC_SPARC_COPY
1783 ENUMX
1784   BFD_RELOC_SPARC_GLOB_DAT
1785 ENUMX
1786   BFD_RELOC_SPARC_JMP_SLOT
1787 ENUMX
1788   BFD_RELOC_SPARC_RELATIVE
1789 ENUMX
1790   BFD_RELOC_SPARC_UA16
1791 ENUMX
1792   BFD_RELOC_SPARC_UA32
1793 ENUMX
1794   BFD_RELOC_SPARC_UA64
1795 ENUMDOC
1796   SPARC ELF relocations.  There is probably some overlap with other
1797   relocation types already defined.
1798
1799 ENUM
1800   BFD_RELOC_SPARC_BASE13
1801 ENUMX
1802   BFD_RELOC_SPARC_BASE22
1803 ENUMDOC
1804   I think these are specific to SPARC a.out (e.g., Sun 4).
1805
1806 ENUMEQ
1807   BFD_RELOC_SPARC_64
1808   BFD_RELOC_64
1809 ENUMX
1810   BFD_RELOC_SPARC_10
1811 ENUMX
1812   BFD_RELOC_SPARC_11
1813 ENUMX
1814   BFD_RELOC_SPARC_OLO10
1815 ENUMX
1816   BFD_RELOC_SPARC_HH22
1817 ENUMX
1818   BFD_RELOC_SPARC_HM10
1819 ENUMX
1820   BFD_RELOC_SPARC_LM22
1821 ENUMX
1822   BFD_RELOC_SPARC_PC_HH22
1823 ENUMX
1824   BFD_RELOC_SPARC_PC_HM10
1825 ENUMX
1826   BFD_RELOC_SPARC_PC_LM22
1827 ENUMX
1828   BFD_RELOC_SPARC_WDISP16
1829 ENUMX
1830   BFD_RELOC_SPARC_WDISP19
1831 ENUMX
1832   BFD_RELOC_SPARC_7
1833 ENUMX
1834   BFD_RELOC_SPARC_6
1835 ENUMX
1836   BFD_RELOC_SPARC_5
1837 ENUMEQX
1838   BFD_RELOC_SPARC_DISP64
1839   BFD_RELOC_64_PCREL
1840 ENUMX
1841   BFD_RELOC_SPARC_PLT32
1842 ENUMX
1843   BFD_RELOC_SPARC_PLT64
1844 ENUMX
1845   BFD_RELOC_SPARC_HIX22
1846 ENUMX
1847   BFD_RELOC_SPARC_LOX10
1848 ENUMX
1849   BFD_RELOC_SPARC_H44
1850 ENUMX
1851   BFD_RELOC_SPARC_M44
1852 ENUMX
1853   BFD_RELOC_SPARC_L44
1854 ENUMX
1855   BFD_RELOC_SPARC_REGISTER
1856 ENUMDOC
1857   SPARC64 relocations
1858
1859 ENUM
1860   BFD_RELOC_SPARC_REV32
1861 ENUMDOC
1862   SPARC little endian relocation
1863 ENUM
1864   BFD_RELOC_SPARC_TLS_GD_HI22
1865 ENUMX
1866   BFD_RELOC_SPARC_TLS_GD_LO10
1867 ENUMX
1868   BFD_RELOC_SPARC_TLS_GD_ADD
1869 ENUMX
1870   BFD_RELOC_SPARC_TLS_GD_CALL
1871 ENUMX
1872   BFD_RELOC_SPARC_TLS_LDM_HI22
1873 ENUMX
1874   BFD_RELOC_SPARC_TLS_LDM_LO10
1875 ENUMX
1876   BFD_RELOC_SPARC_TLS_LDM_ADD
1877 ENUMX
1878   BFD_RELOC_SPARC_TLS_LDM_CALL
1879 ENUMX
1880   BFD_RELOC_SPARC_TLS_LDO_HIX22
1881 ENUMX
1882   BFD_RELOC_SPARC_TLS_LDO_LOX10
1883 ENUMX
1884   BFD_RELOC_SPARC_TLS_LDO_ADD
1885 ENUMX
1886   BFD_RELOC_SPARC_TLS_IE_HI22
1887 ENUMX
1888   BFD_RELOC_SPARC_TLS_IE_LO10
1889 ENUMX
1890   BFD_RELOC_SPARC_TLS_IE_LD
1891 ENUMX
1892   BFD_RELOC_SPARC_TLS_IE_LDX
1893 ENUMX
1894   BFD_RELOC_SPARC_TLS_IE_ADD
1895 ENUMX
1896   BFD_RELOC_SPARC_TLS_LE_HIX22
1897 ENUMX
1898   BFD_RELOC_SPARC_TLS_LE_LOX10
1899 ENUMX
1900   BFD_RELOC_SPARC_TLS_DTPMOD32
1901 ENUMX
1902   BFD_RELOC_SPARC_TLS_DTPMOD64
1903 ENUMX
1904   BFD_RELOC_SPARC_TLS_DTPOFF32
1905 ENUMX
1906   BFD_RELOC_SPARC_TLS_DTPOFF64
1907 ENUMX
1908   BFD_RELOC_SPARC_TLS_TPOFF32
1909 ENUMX
1910   BFD_RELOC_SPARC_TLS_TPOFF64
1911 ENUMDOC
1912   SPARC TLS relocations
1913
1914 ENUM
1915   BFD_RELOC_ALPHA_GPDISP_HI16
1916 ENUMDOC
1917   Alpha ECOFF and ELF relocations.  Some of these treat the symbol or
1918      "addend" in some special way.
1919   For GPDISP_HI16 ("gpdisp") relocations, the symbol is ignored when
1920      writing; when reading, it will be the absolute section symbol.  The
1921      addend is the displacement in bytes of the "lda" instruction from
1922      the "ldah" instruction (which is at the address of this reloc).
1923 ENUM
1924   BFD_RELOC_ALPHA_GPDISP_LO16
1925 ENUMDOC
1926   For GPDISP_LO16 ("ignore") relocations, the symbol is handled as
1927      with GPDISP_HI16 relocs.  The addend is ignored when writing the
1928      relocations out, and is filled in with the file's GP value on
1929      reading, for convenience.
1930
1931 ENUM
1932   BFD_RELOC_ALPHA_GPDISP
1933 ENUMDOC
1934   The ELF GPDISP relocation is exactly the same as the GPDISP_HI16
1935      relocation except that there is no accompanying GPDISP_LO16
1936      relocation.
1937
1938 ENUM
1939   BFD_RELOC_ALPHA_LITERAL
1940 ENUMX
1941   BFD_RELOC_ALPHA_ELF_LITERAL
1942 ENUMX
1943   BFD_RELOC_ALPHA_LITUSE
1944 ENUMDOC
1945   The Alpha LITERAL/LITUSE relocs are produced by a symbol reference;
1946      the assembler turns it into a LDQ instruction to load the address of
1947      the symbol, and then fills in a register in the real instruction.
1948
1949      The LITERAL reloc, at the LDQ instruction, refers to the .lita
1950      section symbol.  The addend is ignored when writing, but is filled
1951      in with the file's GP value on reading, for convenience, as with the
1952      GPDISP_LO16 reloc.
1953
1954      The ELF_LITERAL reloc is somewhere between 16_GOTOFF and GPDISP_LO16.
1955      It should refer to the symbol to be referenced, as with 16_GOTOFF,
1956      but it generates output not based on the position within the .got
1957      section, but relative to the GP value chosen for the file during the
1958      final link stage.
1959
1960      The LITUSE reloc, on the instruction using the loaded address, gives
1961      information to the linker that it might be able to use to optimize
1962      away some literal section references.  The symbol is ignored (read
1963      as the absolute section symbol), and the "addend" indicates the type
1964      of instruction using the register:
1965               1 - "memory" fmt insn
1966               2 - byte-manipulation (byte offset reg)
1967               3 - jsr (target of branch)
1968
1969 ENUM
1970   BFD_RELOC_ALPHA_HINT
1971 ENUMDOC
1972   The HINT relocation indicates a value that should be filled into the
1973      "hint" field of a jmp/jsr/ret instruction, for possible branch-
1974      prediction logic which may be provided on some processors.
1975
1976 ENUM
1977   BFD_RELOC_ALPHA_LINKAGE
1978 ENUMDOC
1979   The LINKAGE relocation outputs a linkage pair in the object file,
1980      which is filled by the linker.
1981
1982 ENUM
1983   BFD_RELOC_ALPHA_CODEADDR
1984 ENUMDOC
1985   The CODEADDR relocation outputs a STO_CA in the object file,
1986      which is filled by the linker.
1987
1988 ENUM
1989   BFD_RELOC_ALPHA_GPREL_HI16
1990 ENUMX
1991   BFD_RELOC_ALPHA_GPREL_LO16
1992 ENUMDOC
1993   The GPREL_HI/LO relocations together form a 32-bit offset from the
1994      GP register.
1995
1996 ENUM
1997   BFD_RELOC_ALPHA_BRSGP
1998 ENUMDOC
1999   Like BFD_RELOC_23_PCREL_S2, except that the source and target must
2000   share a common GP, and the target address is adjusted for
2001   STO_ALPHA_STD_GPLOAD.
2002
2003 ENUM
2004   BFD_RELOC_ALPHA_TLSGD
2005 ENUMX
2006   BFD_RELOC_ALPHA_TLSLDM
2007 ENUMX
2008   BFD_RELOC_ALPHA_DTPMOD64
2009 ENUMX
2010   BFD_RELOC_ALPHA_GOTDTPREL16
2011 ENUMX
2012   BFD_RELOC_ALPHA_DTPREL64
2013 ENUMX
2014   BFD_RELOC_ALPHA_DTPREL_HI16
2015 ENUMX
2016   BFD_RELOC_ALPHA_DTPREL_LO16
2017 ENUMX
2018   BFD_RELOC_ALPHA_DTPREL16
2019 ENUMX
2020   BFD_RELOC_ALPHA_GOTTPREL16
2021 ENUMX
2022   BFD_RELOC_ALPHA_TPREL64
2023 ENUMX
2024   BFD_RELOC_ALPHA_TPREL_HI16
2025 ENUMX
2026   BFD_RELOC_ALPHA_TPREL_LO16
2027 ENUMX
2028   BFD_RELOC_ALPHA_TPREL16
2029 ENUMDOC
2030   Alpha thread-local storage relocations.
2031
2032 ENUM
2033   BFD_RELOC_MIPS_JMP
2034 ENUMDOC
2035   Bits 27..2 of the relocation address shifted right 2 bits;
2036      simple reloc otherwise.
2037
2038 ENUM
2039   BFD_RELOC_MIPS16_JMP
2040 ENUMDOC
2041   The MIPS16 jump instruction.
2042
2043 ENUM
2044   BFD_RELOC_MIPS16_GPREL
2045 ENUMDOC
2046   MIPS16 GP relative reloc.
2047
2048 ENUM
2049   BFD_RELOC_HI16
2050 ENUMDOC
2051   High 16 bits of 32-bit value; simple reloc.
2052 ENUM
2053   BFD_RELOC_HI16_S
2054 ENUMDOC
2055   High 16 bits of 32-bit value but the low 16 bits will be sign
2056      extended and added to form the final result.  If the low 16
2057      bits form a negative number, we need to add one to the high value
2058      to compensate for the borrow when the low bits are added.
2059 ENUM
2060   BFD_RELOC_LO16
2061 ENUMDOC
2062   Low 16 bits.
2063 ENUM
2064   BFD_RELOC_PCREL_HI16_S
2065 ENUMDOC
2066   Like BFD_RELOC_HI16_S, but PC relative.
2067 ENUM
2068   BFD_RELOC_PCREL_LO16
2069 ENUMDOC
2070   Like BFD_RELOC_LO16, but PC relative.
2071
2072 ENUM
2073   BFD_RELOC_MIPS_LITERAL
2074 ENUMDOC
2075   Relocation against a MIPS literal section.
2076
2077 ENUM
2078   BFD_RELOC_MIPS_GOT16
2079 ENUMX
2080   BFD_RELOC_MIPS_CALL16
2081 ENUMX
2082   BFD_RELOC_MIPS_GOT_HI16
2083 ENUMX
2084   BFD_RELOC_MIPS_GOT_LO16
2085 ENUMX
2086   BFD_RELOC_MIPS_CALL_HI16
2087 ENUMX
2088   BFD_RELOC_MIPS_CALL_LO16
2089 ENUMX
2090   BFD_RELOC_MIPS_SUB
2091 ENUMX
2092   BFD_RELOC_MIPS_GOT_PAGE
2093 ENUMX
2094   BFD_RELOC_MIPS_GOT_OFST
2095 ENUMX
2096   BFD_RELOC_MIPS_GOT_DISP
2097 ENUMX
2098   BFD_RELOC_MIPS_SHIFT5
2099 ENUMX
2100   BFD_RELOC_MIPS_SHIFT6
2101 ENUMX
2102   BFD_RELOC_MIPS_INSERT_A
2103 ENUMX
2104   BFD_RELOC_MIPS_INSERT_B
2105 ENUMX
2106   BFD_RELOC_MIPS_DELETE
2107 ENUMX
2108   BFD_RELOC_MIPS_HIGHEST
2109 ENUMX
2110   BFD_RELOC_MIPS_HIGHER
2111 ENUMX
2112   BFD_RELOC_MIPS_SCN_DISP
2113 ENUMX
2114   BFD_RELOC_MIPS_REL16
2115 ENUMX
2116   BFD_RELOC_MIPS_RELGOT
2117 ENUMX
2118   BFD_RELOC_MIPS_JALR
2119 COMMENT
2120 ENUM
2121   BFD_RELOC_FRV_LABEL16
2122 ENUMX
2123   BFD_RELOC_FRV_LABEL24
2124 ENUMX
2125   BFD_RELOC_FRV_LO16
2126 ENUMX
2127   BFD_RELOC_FRV_HI16
2128 ENUMX
2129   BFD_RELOC_FRV_GPREL12
2130 ENUMX
2131   BFD_RELOC_FRV_GPRELU12
2132 ENUMX
2133   BFD_RELOC_FRV_GPREL32
2134 ENUMX
2135   BFD_RELOC_FRV_GPRELHI
2136 ENUMX
2137   BFD_RELOC_FRV_GPRELLO
2138 ENUMDOC
2139   Fujitsu Frv Relocations.
2140 COMMENT
2141 COMMENT
2142 ENUMDOC
2143   MIPS ELF relocations.
2144
2145 COMMENT
2146
2147 ENUM
2148   BFD_RELOC_386_GOT32
2149 ENUMX
2150   BFD_RELOC_386_PLT32
2151 ENUMX
2152   BFD_RELOC_386_COPY
2153 ENUMX
2154   BFD_RELOC_386_GLOB_DAT
2155 ENUMX
2156   BFD_RELOC_386_JUMP_SLOT
2157 ENUMX
2158   BFD_RELOC_386_RELATIVE
2159 ENUMX
2160   BFD_RELOC_386_GOTOFF
2161 ENUMX
2162   BFD_RELOC_386_GOTPC
2163 ENUMX
2164   BFD_RELOC_386_TLS_TPOFF
2165 ENUMX
2166   BFD_RELOC_386_TLS_IE
2167 ENUMX
2168   BFD_RELOC_386_TLS_GOTIE
2169 ENUMX
2170   BFD_RELOC_386_TLS_LE
2171 ENUMX
2172   BFD_RELOC_386_TLS_GD
2173 ENUMX
2174   BFD_RELOC_386_TLS_LDM
2175 ENUMX
2176   BFD_RELOC_386_TLS_LDO_32
2177 ENUMX
2178   BFD_RELOC_386_TLS_IE_32
2179 ENUMX
2180   BFD_RELOC_386_TLS_LE_32
2181 ENUMX
2182   BFD_RELOC_386_TLS_DTPMOD32
2183 ENUMX
2184   BFD_RELOC_386_TLS_DTPOFF32
2185 ENUMX
2186   BFD_RELOC_386_TLS_TPOFF32
2187 ENUMDOC
2188   i386/elf relocations
2189
2190 ENUM
2191   BFD_RELOC_X86_64_GOT32
2192 ENUMX
2193   BFD_RELOC_X86_64_PLT32
2194 ENUMX
2195   BFD_RELOC_X86_64_COPY
2196 ENUMX
2197   BFD_RELOC_X86_64_GLOB_DAT
2198 ENUMX
2199   BFD_RELOC_X86_64_JUMP_SLOT
2200 ENUMX
2201   BFD_RELOC_X86_64_RELATIVE
2202 ENUMX
2203   BFD_RELOC_X86_64_GOTPCREL
2204 ENUMX
2205   BFD_RELOC_X86_64_32S
2206 ENUMX
2207   BFD_RELOC_X86_64_DTPMOD64
2208 ENUMX
2209   BFD_RELOC_X86_64_DTPOFF64
2210 ENUMX
2211   BFD_RELOC_X86_64_TPOFF64
2212 ENUMX
2213   BFD_RELOC_X86_64_TLSGD
2214 ENUMX
2215   BFD_RELOC_X86_64_TLSLD
2216 ENUMX
2217   BFD_RELOC_X86_64_DTPOFF32
2218 ENUMX
2219   BFD_RELOC_X86_64_GOTTPOFF
2220 ENUMX
2221   BFD_RELOC_X86_64_TPOFF32
2222 ENUMDOC
2223   x86-64/elf relocations
2224
2225 ENUM
2226   BFD_RELOC_NS32K_IMM_8
2227 ENUMX
2228   BFD_RELOC_NS32K_IMM_16
2229 ENUMX
2230   BFD_RELOC_NS32K_IMM_32
2231 ENUMX
2232   BFD_RELOC_NS32K_IMM_8_PCREL
2233 ENUMX
2234   BFD_RELOC_NS32K_IMM_16_PCREL
2235 ENUMX
2236   BFD_RELOC_NS32K_IMM_32_PCREL
2237 ENUMX
2238   BFD_RELOC_NS32K_DISP_8
2239 ENUMX
2240   BFD_RELOC_NS32K_DISP_16
2241 ENUMX
2242   BFD_RELOC_NS32K_DISP_32
2243 ENUMX
2244   BFD_RELOC_NS32K_DISP_8_PCREL
2245 ENUMX
2246   BFD_RELOC_NS32K_DISP_16_PCREL
2247 ENUMX
2248   BFD_RELOC_NS32K_DISP_32_PCREL
2249 ENUMDOC
2250   ns32k relocations
2251
2252 ENUM
2253   BFD_RELOC_PDP11_DISP_8_PCREL
2254 ENUMX
2255   BFD_RELOC_PDP11_DISP_6_PCREL
2256 ENUMDOC
2257   PDP11 relocations
2258
2259 ENUM
2260   BFD_RELOC_PJ_CODE_HI16
2261 ENUMX
2262   BFD_RELOC_PJ_CODE_LO16
2263 ENUMX
2264   BFD_RELOC_PJ_CODE_DIR16
2265 ENUMX
2266   BFD_RELOC_PJ_CODE_DIR32
2267 ENUMX
2268   BFD_RELOC_PJ_CODE_REL16
2269 ENUMX
2270   BFD_RELOC_PJ_CODE_REL32
2271 ENUMDOC
2272   Picojava relocs.  Not all of these appear in object files.
2273
2274 ENUM
2275   BFD_RELOC_PPC_B26
2276 ENUMX
2277   BFD_RELOC_PPC_BA26
2278 ENUMX
2279   BFD_RELOC_PPC_TOC16
2280 ENUMX
2281   BFD_RELOC_PPC_B16
2282 ENUMX
2283   BFD_RELOC_PPC_B16_BRTAKEN
2284 ENUMX
2285   BFD_RELOC_PPC_B16_BRNTAKEN
2286 ENUMX
2287   BFD_RELOC_PPC_BA16
2288 ENUMX
2289   BFD_RELOC_PPC_BA16_BRTAKEN
2290 ENUMX
2291   BFD_RELOC_PPC_BA16_BRNTAKEN
2292 ENUMX
2293   BFD_RELOC_PPC_COPY
2294 ENUMX
2295   BFD_RELOC_PPC_GLOB_DAT
2296 ENUMX
2297   BFD_RELOC_PPC_JMP_SLOT
2298 ENUMX
2299   BFD_RELOC_PPC_RELATIVE
2300 ENUMX
2301   BFD_RELOC_PPC_LOCAL24PC
2302 ENUMX
2303   BFD_RELOC_PPC_EMB_NADDR32
2304 ENUMX
2305   BFD_RELOC_PPC_EMB_NADDR16
2306 ENUMX
2307   BFD_RELOC_PPC_EMB_NADDR16_LO
2308 ENUMX
2309   BFD_RELOC_PPC_EMB_NADDR16_HI
2310 ENUMX
2311   BFD_RELOC_PPC_EMB_NADDR16_HA
2312 ENUMX
2313   BFD_RELOC_PPC_EMB_SDAI16
2314 ENUMX
2315   BFD_RELOC_PPC_EMB_SDA2I16
2316 ENUMX
2317   BFD_RELOC_PPC_EMB_SDA2REL
2318 ENUMX
2319   BFD_RELOC_PPC_EMB_SDA21
2320 ENUMX
2321   BFD_RELOC_PPC_EMB_MRKREF
2322 ENUMX
2323   BFD_RELOC_PPC_EMB_RELSEC16
2324 ENUMX
2325   BFD_RELOC_PPC_EMB_RELST_LO
2326 ENUMX
2327   BFD_RELOC_PPC_EMB_RELST_HI
2328 ENUMX
2329   BFD_RELOC_PPC_EMB_RELST_HA
2330 ENUMX
2331   BFD_RELOC_PPC_EMB_BIT_FLD
2332 ENUMX
2333   BFD_RELOC_PPC_EMB_RELSDA
2334 ENUMX
2335   BFD_RELOC_PPC64_HIGHER
2336 ENUMX
2337   BFD_RELOC_PPC64_HIGHER_S
2338 ENUMX
2339   BFD_RELOC_PPC64_HIGHEST
2340 ENUMX
2341   BFD_RELOC_PPC64_HIGHEST_S
2342 ENUMX
2343   BFD_RELOC_PPC64_TOC16_LO
2344 ENUMX
2345   BFD_RELOC_PPC64_TOC16_HI
2346 ENUMX
2347   BFD_RELOC_PPC64_TOC16_HA
2348 ENUMX
2349   BFD_RELOC_PPC64_TOC
2350 ENUMX
2351   BFD_RELOC_PPC64_PLTGOT16
2352 ENUMX
2353   BFD_RELOC_PPC64_PLTGOT16_LO
2354 ENUMX
2355   BFD_RELOC_PPC64_PLTGOT16_HI
2356 ENUMX
2357   BFD_RELOC_PPC64_PLTGOT16_HA
2358 ENUMX
2359   BFD_RELOC_PPC64_ADDR16_DS
2360 ENUMX
2361   BFD_RELOC_PPC64_ADDR16_LO_DS
2362 ENUMX
2363   BFD_RELOC_PPC64_GOT16_DS
2364 ENUMX
2365   BFD_RELOC_PPC64_GOT16_LO_DS
2366 ENUMX
2367   BFD_RELOC_PPC64_PLT16_LO_DS
2368 ENUMX
2369   BFD_RELOC_PPC64_SECTOFF_DS
2370 ENUMX
2371   BFD_RELOC_PPC64_SECTOFF_LO_DS
2372 ENUMX
2373   BFD_RELOC_PPC64_TOC16_DS
2374 ENUMX
2375   BFD_RELOC_PPC64_TOC16_LO_DS
2376 ENUMX
2377   BFD_RELOC_PPC64_PLTGOT16_DS
2378 ENUMX
2379   BFD_RELOC_PPC64_PLTGOT16_LO_DS
2380 ENUMDOC
2381   Power(rs6000) and PowerPC relocations.
2382
2383 ENUM
2384   BFD_RELOC_PPC_TLS
2385 ENUMX
2386   BFD_RELOC_PPC_DTPMOD
2387 ENUMX
2388   BFD_RELOC_PPC_TPREL16
2389 ENUMX
2390   BFD_RELOC_PPC_TPREL16_LO
2391 ENUMX
2392   BFD_RELOC_PPC_TPREL16_HI
2393 ENUMX
2394   BFD_RELOC_PPC_TPREL16_HA
2395 ENUMX
2396   BFD_RELOC_PPC_TPREL
2397 ENUMX
2398   BFD_RELOC_PPC_DTPREL16
2399 ENUMX
2400   BFD_RELOC_PPC_DTPREL16_LO
2401 ENUMX
2402   BFD_RELOC_PPC_DTPREL16_HI
2403 ENUMX
2404   BFD_RELOC_PPC_DTPREL16_HA
2405 ENUMX
2406   BFD_RELOC_PPC_DTPREL
2407 ENUMX
2408   BFD_RELOC_PPC_GOT_TLSGD16
2409 ENUMX
2410   BFD_RELOC_PPC_GOT_TLSGD16_LO
2411 ENUMX
2412   BFD_RELOC_PPC_GOT_TLSGD16_HI
2413 ENUMX
2414   BFD_RELOC_PPC_GOT_TLSGD16_HA
2415 ENUMX
2416   BFD_RELOC_PPC_GOT_TLSLD16
2417 ENUMX
2418   BFD_RELOC_PPC_GOT_TLSLD16_LO
2419 ENUMX
2420   BFD_RELOC_PPC_GOT_TLSLD16_HI
2421 ENUMX
2422   BFD_RELOC_PPC_GOT_TLSLD16_HA
2423 ENUMX
2424   BFD_RELOC_PPC_GOT_TPREL16
2425 ENUMX
2426   BFD_RELOC_PPC_GOT_TPREL16_LO
2427 ENUMX
2428   BFD_RELOC_PPC_GOT_TPREL16_HI
2429 ENUMX
2430   BFD_RELOC_PPC_GOT_TPREL16_HA
2431 ENUMX
2432   BFD_RELOC_PPC_GOT_DTPREL16
2433 ENUMX
2434   BFD_RELOC_PPC_GOT_DTPREL16_LO
2435 ENUMX
2436   BFD_RELOC_PPC_GOT_DTPREL16_HI
2437 ENUMX
2438   BFD_RELOC_PPC_GOT_DTPREL16_HA
2439 ENUMX
2440   BFD_RELOC_PPC64_TPREL16_DS
2441 ENUMX
2442   BFD_RELOC_PPC64_TPREL16_LO_DS
2443 ENUMX
2444   BFD_RELOC_PPC64_TPREL16_HIGHER
2445 ENUMX
2446   BFD_RELOC_PPC64_TPREL16_HIGHERA
2447 ENUMX
2448   BFD_RELOC_PPC64_TPREL16_HIGHEST
2449 ENUMX
2450   BFD_RELOC_PPC64_TPREL16_HIGHESTA
2451 ENUMX
2452   BFD_RELOC_PPC64_DTPREL16_DS
2453 ENUMX
2454   BFD_RELOC_PPC64_DTPREL16_LO_DS
2455 ENUMX
2456   BFD_RELOC_PPC64_DTPREL16_HIGHER
2457 ENUMX
2458   BFD_RELOC_PPC64_DTPREL16_HIGHERA
2459 ENUMX
2460   BFD_RELOC_PPC64_DTPREL16_HIGHEST
2461 ENUMX
2462   BFD_RELOC_PPC64_DTPREL16_HIGHESTA
2463 ENUMDOC
2464   PowerPC and PowerPC64 thread-local storage relocations.
2465
2466 ENUM
2467   BFD_RELOC_I370_D12
2468 ENUMDOC
2469   IBM 370/390 relocations
2470
2471 ENUM
2472   BFD_RELOC_CTOR
2473 ENUMDOC
2474   The type of reloc used to build a contructor table - at the moment
2475   probably a 32 bit wide absolute relocation, but the target can choose.
2476   It generally does map to one of the other relocation types.
2477
2478 ENUM
2479   BFD_RELOC_ARM_PCREL_BRANCH
2480 ENUMDOC
2481   ARM 26 bit pc-relative branch.  The lowest two bits must be zero and are
2482   not stored in the instruction.
2483 ENUM
2484   BFD_RELOC_ARM_PCREL_BLX
2485 ENUMDOC
2486   ARM 26 bit pc-relative branch.  The lowest bit must be zero and is
2487   not stored in the instruction.  The 2nd lowest bit comes from a 1 bit
2488   field in the instruction.
2489 ENUM
2490   BFD_RELOC_THUMB_PCREL_BLX
2491 ENUMDOC
2492   Thumb 22 bit pc-relative branch.  The lowest bit must be zero and is
2493   not stored in the instruction.  The 2nd lowest bit comes from a 1 bit
2494   field in the instruction.
2495 ENUM
2496   BFD_RELOC_ARM_IMMEDIATE
2497 ENUMX
2498   BFD_RELOC_ARM_ADRL_IMMEDIATE
2499 ENUMX
2500   BFD_RELOC_ARM_OFFSET_IMM
2501 ENUMX
2502   BFD_RELOC_ARM_SHIFT_IMM
2503 ENUMX
2504   BFD_RELOC_ARM_SWI
2505 ENUMX
2506   BFD_RELOC_ARM_MULTI
2507 ENUMX
2508   BFD_RELOC_ARM_CP_OFF_IMM
2509 ENUMX
2510   BFD_RELOC_ARM_CP_OFF_IMM_S2
2511 ENUMX
2512   BFD_RELOC_ARM_ADR_IMM
2513 ENUMX
2514   BFD_RELOC_ARM_LDR_IMM
2515 ENUMX
2516   BFD_RELOC_ARM_LITERAL
2517 ENUMX
2518   BFD_RELOC_ARM_IN_POOL
2519 ENUMX
2520   BFD_RELOC_ARM_OFFSET_IMM8
2521 ENUMX
2522   BFD_RELOC_ARM_HWLITERAL
2523 ENUMX
2524   BFD_RELOC_ARM_THUMB_ADD
2525 ENUMX
2526   BFD_RELOC_ARM_THUMB_IMM
2527 ENUMX
2528   BFD_RELOC_ARM_THUMB_SHIFT
2529 ENUMX
2530   BFD_RELOC_ARM_THUMB_OFFSET
2531 ENUMX
2532   BFD_RELOC_ARM_GOT12
2533 ENUMX
2534   BFD_RELOC_ARM_GOT32
2535 ENUMX
2536   BFD_RELOC_ARM_JUMP_SLOT
2537 ENUMX
2538   BFD_RELOC_ARM_COPY
2539 ENUMX
2540   BFD_RELOC_ARM_GLOB_DAT
2541 ENUMX
2542   BFD_RELOC_ARM_PLT32
2543 ENUMX
2544   BFD_RELOC_ARM_RELATIVE
2545 ENUMX
2546   BFD_RELOC_ARM_GOTOFF
2547 ENUMX
2548   BFD_RELOC_ARM_GOTPC
2549 ENUMDOC
2550   These relocs are only used within the ARM assembler.  They are not
2551   (at present) written to any object files.
2552
2553 ENUM
2554   BFD_RELOC_SH_PCDISP8BY2
2555 ENUMX
2556   BFD_RELOC_SH_PCDISP12BY2
2557 ENUMX
2558   BFD_RELOC_SH_IMM4
2559 ENUMX
2560   BFD_RELOC_SH_IMM4BY2
2561 ENUMX
2562   BFD_RELOC_SH_IMM4BY4
2563 ENUMX
2564   BFD_RELOC_SH_IMM8
2565 ENUMX
2566   BFD_RELOC_SH_IMM8BY2
2567 ENUMX
2568   BFD_RELOC_SH_IMM8BY4
2569 ENUMX
2570   BFD_RELOC_SH_PCRELIMM8BY2
2571 ENUMX
2572   BFD_RELOC_SH_PCRELIMM8BY4
2573 ENUMX
2574   BFD_RELOC_SH_SWITCH16
2575 ENUMX
2576   BFD_RELOC_SH_SWITCH32
2577 ENUMX
2578   BFD_RELOC_SH_USES
2579 ENUMX
2580   BFD_RELOC_SH_COUNT
2581 ENUMX
2582   BFD_RELOC_SH_ALIGN
2583 ENUMX
2584   BFD_RELOC_SH_CODE
2585 ENUMX
2586   BFD_RELOC_SH_DATA
2587 ENUMX
2588   BFD_RELOC_SH_LABEL
2589 ENUMX
2590   BFD_RELOC_SH_LOOP_START
2591 ENUMX
2592   BFD_RELOC_SH_LOOP_END
2593 ENUMX
2594   BFD_RELOC_SH_COPY
2595 ENUMX
2596   BFD_RELOC_SH_GLOB_DAT
2597 ENUMX
2598   BFD_RELOC_SH_JMP_SLOT
2599 ENUMX
2600   BFD_RELOC_SH_RELATIVE
2601 ENUMX
2602   BFD_RELOC_SH_GOTPC
2603 ENUMX
2604   BFD_RELOC_SH_GOT_LOW16
2605 ENUMX
2606   BFD_RELOC_SH_GOT_MEDLOW16
2607 ENUMX
2608   BFD_RELOC_SH_GOT_MEDHI16
2609 ENUMX
2610   BFD_RELOC_SH_GOT_HI16
2611 ENUMX
2612   BFD_RELOC_SH_GOTPLT_LOW16
2613 ENUMX
2614   BFD_RELOC_SH_GOTPLT_MEDLOW16
2615 ENUMX
2616   BFD_RELOC_SH_GOTPLT_MEDHI16
2617 ENUMX
2618   BFD_RELOC_SH_GOTPLT_HI16
2619 ENUMX
2620   BFD_RELOC_SH_PLT_LOW16
2621 ENUMX
2622   BFD_RELOC_SH_PLT_MEDLOW16
2623 ENUMX
2624   BFD_RELOC_SH_PLT_MEDHI16
2625 ENUMX
2626   BFD_RELOC_SH_PLT_HI16
2627 ENUMX
2628   BFD_RELOC_SH_GOTOFF_LOW16
2629 ENUMX
2630   BFD_RELOC_SH_GOTOFF_MEDLOW16
2631 ENUMX
2632   BFD_RELOC_SH_GOTOFF_MEDHI16
2633 ENUMX
2634   BFD_RELOC_SH_GOTOFF_HI16
2635 ENUMX
2636   BFD_RELOC_SH_GOTPC_LOW16
2637 ENUMX
2638   BFD_RELOC_SH_GOTPC_MEDLOW16
2639 ENUMX
2640   BFD_RELOC_SH_GOTPC_MEDHI16
2641 ENUMX
2642   BFD_RELOC_SH_GOTPC_HI16
2643 ENUMX
2644   BFD_RELOC_SH_COPY64
2645 ENUMX
2646   BFD_RELOC_SH_GLOB_DAT64
2647 ENUMX
2648   BFD_RELOC_SH_JMP_SLOT64
2649 ENUMX
2650   BFD_RELOC_SH_RELATIVE64
2651 ENUMX
2652   BFD_RELOC_SH_GOT10BY4
2653 ENUMX
2654   BFD_RELOC_SH_GOT10BY8
2655 ENUMX
2656   BFD_RELOC_SH_GOTPLT10BY4
2657 ENUMX
2658   BFD_RELOC_SH_GOTPLT10BY8
2659 ENUMX
2660   BFD_RELOC_SH_GOTPLT32
2661 ENUMX
2662   BFD_RELOC_SH_SHMEDIA_CODE
2663 ENUMX
2664   BFD_RELOC_SH_IMMU5
2665 ENUMX
2666   BFD_RELOC_SH_IMMS6
2667 ENUMX
2668   BFD_RELOC_SH_IMMS6BY32
2669 ENUMX
2670   BFD_RELOC_SH_IMMU6
2671 ENUMX
2672   BFD_RELOC_SH_IMMS10
2673 ENUMX
2674   BFD_RELOC_SH_IMMS10BY2
2675 ENUMX
2676   BFD_RELOC_SH_IMMS10BY4
2677 ENUMX
2678   BFD_RELOC_SH_IMMS10BY8
2679 ENUMX
2680   BFD_RELOC_SH_IMMS16
2681 ENUMX
2682   BFD_RELOC_SH_IMMU16
2683 ENUMX
2684   BFD_RELOC_SH_IMM_LOW16
2685 ENUMX
2686   BFD_RELOC_SH_IMM_LOW16_PCREL
2687 ENUMX
2688   BFD_RELOC_SH_IMM_MEDLOW16
2689 ENUMX
2690   BFD_RELOC_SH_IMM_MEDLOW16_PCREL
2691 ENUMX
2692   BFD_RELOC_SH_IMM_MEDHI16
2693 ENUMX
2694   BFD_RELOC_SH_IMM_MEDHI16_PCREL
2695 ENUMX
2696   BFD_RELOC_SH_IMM_HI16
2697 ENUMX
2698   BFD_RELOC_SH_IMM_HI16_PCREL
2699 ENUMX
2700   BFD_RELOC_SH_PT_16
2701 ENUMX
2702   BFD_RELOC_SH_TLS_GD_32
2703 ENUMX
2704   BFD_RELOC_SH_TLS_LD_32
2705 ENUMX
2706   BFD_RELOC_SH_TLS_LDO_32
2707 ENUMX
2708   BFD_RELOC_SH_TLS_IE_32
2709 ENUMX
2710   BFD_RELOC_SH_TLS_LE_32
2711 ENUMX
2712   BFD_RELOC_SH_TLS_DTPMOD32
2713 ENUMX
2714   BFD_RELOC_SH_TLS_DTPOFF32
2715 ENUMX
2716   BFD_RELOC_SH_TLS_TPOFF32
2717 ENUMDOC
2718   Renesas / SuperH SH relocs.  Not all of these appear in object files.
2719
2720 ENUM
2721   BFD_RELOC_THUMB_PCREL_BRANCH9
2722 ENUMX
2723   BFD_RELOC_THUMB_PCREL_BRANCH12
2724 ENUMX
2725   BFD_RELOC_THUMB_PCREL_BRANCH23
2726 ENUMDOC
2727   Thumb 23-, 12- and 9-bit pc-relative branches.  The lowest bit must
2728   be zero and is not stored in the instruction.
2729
2730 ENUM
2731   BFD_RELOC_ARC_B22_PCREL
2732 ENUMDOC
2733   ARC Cores relocs.
2734   ARC 22 bit pc-relative branch.  The lowest two bits must be zero and are
2735   not stored in the instruction.  The high 20 bits are installed in bits 26
2736   through 7 of the instruction.
2737 ENUM
2738   BFD_RELOC_ARC_B26
2739 ENUMDOC
2740   ARC 26 bit absolute branch.  The lowest two bits must be zero and are not
2741   stored in the instruction.  The high 24 bits are installed in bits 23
2742   through 0.
2743
2744 ENUM
2745   BFD_RELOC_D10V_10_PCREL_R
2746 ENUMDOC
2747   Mitsubishi D10V relocs.
2748   This is a 10-bit reloc with the right 2 bits
2749   assumed to be 0.
2750 ENUM
2751   BFD_RELOC_D10V_10_PCREL_L
2752 ENUMDOC
2753   Mitsubishi D10V relocs.
2754   This is a 10-bit reloc with the right 2 bits
2755   assumed to be 0.  This is the same as the previous reloc
2756   except it is in the left container, i.e.,
2757   shifted left 15 bits.
2758 ENUM
2759   BFD_RELOC_D10V_18
2760 ENUMDOC
2761   This is an 18-bit reloc with the right 2 bits
2762   assumed to be 0.
2763 ENUM
2764   BFD_RELOC_D10V_18_PCREL
2765 ENUMDOC
2766   This is an 18-bit reloc with the right 2 bits
2767   assumed to be 0.
2768
2769 ENUM
2770   BFD_RELOC_D30V_6
2771 ENUMDOC
2772   Mitsubishi D30V relocs.
2773   This is a 6-bit absolute reloc.
2774 ENUM
2775   BFD_RELOC_D30V_9_PCREL
2776 ENUMDOC
2777   This is a 6-bit pc-relative reloc with
2778   the right 3 bits assumed to be 0.
2779 ENUM
2780   BFD_RELOC_D30V_9_PCREL_R
2781 ENUMDOC
2782   This is a 6-bit pc-relative reloc with
2783   the right 3 bits assumed to be 0. Same
2784   as the previous reloc but on the right side
2785   of the container.
2786 ENUM
2787   BFD_RELOC_D30V_15
2788 ENUMDOC
2789   This is a 12-bit absolute reloc with the
2790   right 3 bitsassumed to be 0.
2791 ENUM
2792   BFD_RELOC_D30V_15_PCREL
2793 ENUMDOC
2794   This is a 12-bit pc-relative reloc with
2795   the right 3 bits assumed to be 0.
2796 ENUM
2797   BFD_RELOC_D30V_15_PCREL_R
2798 ENUMDOC
2799   This is a 12-bit pc-relative reloc with
2800   the right 3 bits assumed to be 0. Same
2801   as the previous reloc but on the right side
2802   of the container.
2803 ENUM
2804   BFD_RELOC_D30V_21
2805 ENUMDOC
2806   This is an 18-bit absolute reloc with
2807   the right 3 bits assumed to be 0.
2808 ENUM
2809   BFD_RELOC_D30V_21_PCREL
2810 ENUMDOC
2811   This is an 18-bit pc-relative reloc with
2812   the right 3 bits assumed to be 0.
2813 ENUM
2814   BFD_RELOC_D30V_21_PCREL_R
2815 ENUMDOC
2816   This is an 18-bit pc-relative reloc with
2817   the right 3 bits assumed to be 0. Same
2818   as the previous reloc but on the right side
2819   of the container.
2820 ENUM
2821   BFD_RELOC_D30V_32
2822 ENUMDOC
2823   This is a 32-bit absolute reloc.
2824 ENUM
2825   BFD_RELOC_D30V_32_PCREL
2826 ENUMDOC
2827   This is a 32-bit pc-relative reloc.
2828
2829 ENUM
2830   BFD_RELOC_DLX_HI16_S
2831 ENUMDOC
2832   DLX relocs
2833 ENUM
2834   BFD_RELOC_DLX_LO16
2835 ENUMDOC
2836   DLX relocs
2837 ENUM
2838   BFD_RELOC_DLX_JMP26
2839 ENUMDOC
2840   DLX relocs
2841
2842 ENUM
2843   BFD_RELOC_M32R_24
2844 ENUMDOC
2845   Renesas M32R (formerly Mitsubishi M32R) relocs.
2846   This is a 24 bit absolute address.
2847 ENUM
2848   BFD_RELOC_M32R_10_PCREL
2849 ENUMDOC
2850   This is a 10-bit pc-relative reloc with the right 2 bits assumed to be 0.
2851 ENUM
2852   BFD_RELOC_M32R_18_PCREL
2853 ENUMDOC
2854   This is an 18-bit reloc with the right 2 bits assumed to be 0.
2855 ENUM
2856   BFD_RELOC_M32R_26_PCREL
2857 ENUMDOC
2858   This is a 26-bit reloc with the right 2 bits assumed to be 0.
2859 ENUM
2860   BFD_RELOC_M32R_HI16_ULO
2861 ENUMDOC
2862   This is a 16-bit reloc containing the high 16 bits of an address
2863   used when the lower 16 bits are treated as unsigned.
2864 ENUM
2865   BFD_RELOC_M32R_HI16_SLO
2866 ENUMDOC
2867   This is a 16-bit reloc containing the high 16 bits of an address
2868   used when the lower 16 bits are treated as signed.
2869 ENUM
2870   BFD_RELOC_M32R_LO16
2871 ENUMDOC
2872   This is a 16-bit reloc containing the lower 16 bits of an address.
2873 ENUM
2874   BFD_RELOC_M32R_SDA16
2875 ENUMDOC
2876   This is a 16-bit reloc containing the small data area offset for use in
2877   add3, load, and store instructions.
2878
2879 ENUM
2880   BFD_RELOC_V850_9_PCREL
2881 ENUMDOC
2882   This is a 9-bit reloc
2883 ENUM
2884   BFD_RELOC_V850_22_PCREL
2885 ENUMDOC
2886   This is a 22-bit reloc
2887
2888 ENUM
2889   BFD_RELOC_V850_SDA_16_16_OFFSET
2890 ENUMDOC
2891   This is a 16 bit offset from the short data area pointer.
2892 ENUM
2893   BFD_RELOC_V850_SDA_15_16_OFFSET
2894 ENUMDOC
2895   This is a 16 bit offset (of which only 15 bits are used) from the
2896   short data area pointer.
2897 ENUM
2898   BFD_RELOC_V850_ZDA_16_16_OFFSET
2899 ENUMDOC
2900   This is a 16 bit offset from the zero data area pointer.
2901 ENUM
2902   BFD_RELOC_V850_ZDA_15_16_OFFSET
2903 ENUMDOC
2904   This is a 16 bit offset (of which only 15 bits are used) from the
2905   zero data area pointer.
2906 ENUM
2907   BFD_RELOC_V850_TDA_6_8_OFFSET
2908 ENUMDOC
2909   This is an 8 bit offset (of which only 6 bits are used) from the
2910   tiny data area pointer.
2911 ENUM
2912   BFD_RELOC_V850_TDA_7_8_OFFSET
2913 ENUMDOC
2914   This is an 8bit offset (of which only 7 bits are used) from the tiny
2915   data area pointer.
2916 ENUM
2917   BFD_RELOC_V850_TDA_7_7_OFFSET
2918 ENUMDOC
2919   This is a 7 bit offset from the tiny data area pointer.
2920 ENUM
2921   BFD_RELOC_V850_TDA_16_16_OFFSET
2922 ENUMDOC
2923   This is a 16 bit offset from the tiny data area pointer.
2924 COMMENT
2925 ENUM
2926   BFD_RELOC_V850_TDA_4_5_OFFSET
2927 ENUMDOC
2928   This is a 5 bit offset (of which only 4 bits are used) from the tiny
2929   data area pointer.
2930 ENUM
2931   BFD_RELOC_V850_TDA_4_4_OFFSET
2932 ENUMDOC
2933   This is a 4 bit offset from the tiny data area pointer.
2934 ENUM
2935   BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
2936 ENUMDOC
2937   This is a 16 bit offset from the short data area pointer, with the
2938   bits placed non-contigously in the instruction.
2939 ENUM
2940   BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
2941 ENUMDOC
2942   This is a 16 bit offset from the zero data area pointer, with the
2943   bits placed non-contigously in the instruction.
2944 ENUM
2945   BFD_RELOC_V850_CALLT_6_7_OFFSET
2946 ENUMDOC
2947   This is a 6 bit offset from the call table base pointer.
2948 ENUM
2949   BFD_RELOC_V850_CALLT_16_16_OFFSET
2950 ENUMDOC
2951   This is a 16 bit offset from the call table base pointer.
2952 ENUM
2953   BFD_RELOC_V850_LONGCALL
2954 ENUMDOC
2955   Used for relaxing indirect function calls.
2956 ENUM
2957   BFD_RELOC_V850_LONGJUMP
2958 ENUMDOC
2959   Used for relaxing indirect jumps.
2960 ENUM
2961   BFD_RELOC_V850_ALIGN
2962 ENUMDOC
2963   Used to maintain alignment whilst relaxing.
2964 ENUM
2965   BFD_RELOC_MN10300_32_PCREL
2966 ENUMDOC
2967   This is a 32bit pcrel reloc for the mn10300, offset by two bytes in the
2968   instruction.
2969 ENUM
2970   BFD_RELOC_MN10300_16_PCREL
2971 ENUMDOC
2972   This is a 16bit pcrel reloc for the mn10300, offset by two bytes in the
2973   instruction.
2974
2975 ENUM
2976   BFD_RELOC_TIC30_LDP
2977 ENUMDOC
2978   This is a 8bit DP reloc for the tms320c30, where the most
2979   significant 8 bits of a 24 bit word are placed into the least
2980   significant 8 bits of the opcode.
2981
2982 ENUM
2983   BFD_RELOC_TIC54X_PARTLS7
2984 ENUMDOC
2985   This is a 7bit reloc for the tms320c54x, where the least
2986   significant 7 bits of a 16 bit word are placed into the least
2987   significant 7 bits of the opcode.
2988
2989 ENUM
2990   BFD_RELOC_TIC54X_PARTMS9
2991 ENUMDOC
2992   This is a 9bit DP reloc for the tms320c54x, where the most
2993   significant 9 bits of a 16 bit word are placed into the least
2994   significant 9 bits of the opcode.
2995
2996 ENUM
2997   BFD_RELOC_TIC54X_23
2998 ENUMDOC
2999   This is an extended address 23-bit reloc for the tms320c54x.
3000
3001 ENUM
3002   BFD_RELOC_TIC54X_16_OF_23
3003 ENUMDOC
3004   This is a 16-bit reloc for the tms320c54x, where the least
3005   significant 16 bits of a 23-bit extended address are placed into
3006   the opcode.
3007
3008 ENUM
3009   BFD_RELOC_TIC54X_MS7_OF_23
3010 ENUMDOC
3011   This is a reloc for the tms320c54x, where the most
3012   significant 7 bits of a 23-bit extended address are placed into
3013   the opcode.
3014
3015 ENUM
3016   BFD_RELOC_FR30_48
3017 ENUMDOC
3018   This is a 48 bit reloc for the FR30 that stores 32 bits.
3019 ENUM
3020   BFD_RELOC_FR30_20
3021 ENUMDOC
3022   This is a 32 bit reloc for the FR30 that stores 20 bits split up into
3023   two sections.
3024 ENUM
3025   BFD_RELOC_FR30_6_IN_4
3026 ENUMDOC
3027   This is a 16 bit reloc for the FR30 that stores a 6 bit word offset in
3028   4 bits.
3029 ENUM
3030   BFD_RELOC_FR30_8_IN_8
3031 ENUMDOC
3032   This is a 16 bit reloc for the FR30 that stores an 8 bit byte offset
3033   into 8 bits.
3034 ENUM
3035   BFD_RELOC_FR30_9_IN_8
3036 ENUMDOC
3037   This is a 16 bit reloc for the FR30 that stores a 9 bit short offset
3038   into 8 bits.
3039 ENUM
3040   BFD_RELOC_FR30_10_IN_8
3041 ENUMDOC
3042   This is a 16 bit reloc for the FR30 that stores a 10 bit word offset
3043   into 8 bits.
3044 ENUM
3045   BFD_RELOC_FR30_9_PCREL
3046 ENUMDOC
3047   This is a 16 bit reloc for the FR30 that stores a 9 bit pc relative
3048   short offset into 8 bits.
3049 ENUM
3050   BFD_RELOC_FR30_12_PCREL
3051 ENUMDOC
3052   This is a 16 bit reloc for the FR30 that stores a 12 bit pc relative
3053   short offset into 11 bits.
3054
3055 ENUM
3056   BFD_RELOC_MCORE_PCREL_IMM8BY4
3057 ENUMX
3058   BFD_RELOC_MCORE_PCREL_IMM11BY2
3059 ENUMX
3060   BFD_RELOC_MCORE_PCREL_IMM4BY2
3061 ENUMX
3062   BFD_RELOC_MCORE_PCREL_32
3063 ENUMX
3064   BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2
3065 ENUMX
3066   BFD_RELOC_MCORE_RVA
3067 ENUMDOC
3068   Motorola Mcore relocations.
3069
3070 ENUM
3071   BFD_RELOC_MMIX_GETA
3072 ENUMX
3073   BFD_RELOC_MMIX_GETA_1
3074 ENUMX
3075   BFD_RELOC_MMIX_GETA_2
3076 ENUMX
3077   BFD_RELOC_MMIX_GETA_3
3078 ENUMDOC
3079   These are relocations for the GETA instruction.
3080 ENUM
3081   BFD_RELOC_MMIX_CBRANCH
3082 ENUMX
3083   BFD_RELOC_MMIX_CBRANCH_J
3084 ENUMX
3085   BFD_RELOC_MMIX_CBRANCH_1
3086 ENUMX
3087   BFD_RELOC_MMIX_CBRANCH_2
3088 ENUMX
3089   BFD_RELOC_MMIX_CBRANCH_3
3090 ENUMDOC
3091   These are relocations for a conditional branch instruction.
3092 ENUM
3093   BFD_RELOC_MMIX_PUSHJ
3094 ENUMX
3095   BFD_RELOC_MMIX_PUSHJ_1
3096 ENUMX
3097   BFD_RELOC_MMIX_PUSHJ_2
3098 ENUMX
3099   BFD_RELOC_MMIX_PUSHJ_3
3100 ENUMDOC
3101   These are relocations for the PUSHJ instruction.
3102 ENUM
3103   BFD_RELOC_MMIX_JMP
3104 ENUMX
3105   BFD_RELOC_MMIX_JMP_1
3106 ENUMX
3107   BFD_RELOC_MMIX_JMP_2
3108 ENUMX
3109   BFD_RELOC_MMIX_JMP_3
3110 ENUMDOC
3111   These are relocations for the JMP instruction.
3112 ENUM
3113   BFD_RELOC_MMIX_ADDR19
3114 ENUMDOC
3115   This is a relocation for a relative address as in a GETA instruction or
3116   a branch.
3117 ENUM
3118   BFD_RELOC_MMIX_ADDR27
3119 ENUMDOC
3120   This is a relocation for a relative address as in a JMP instruction.
3121 ENUM
3122   BFD_RELOC_MMIX_REG_OR_BYTE
3123 ENUMDOC
3124   This is a relocation for an instruction field that may be a general
3125   register or a value 0..255.
3126 ENUM
3127   BFD_RELOC_MMIX_REG
3128 ENUMDOC
3129   This is a relocation for an instruction field that may be a general
3130   register.
3131 ENUM
3132   BFD_RELOC_MMIX_BASE_PLUS_OFFSET
3133 ENUMDOC
3134   This is a relocation for two instruction fields holding a register and
3135   an offset, the equivalent of the relocation.
3136 ENUM
3137   BFD_RELOC_MMIX_LOCAL
3138 ENUMDOC
3139   This relocation is an assertion that the expression is not allocated as
3140   a global register.  It does not modify contents.
3141
3142 ENUM
3143   BFD_RELOC_AVR_7_PCREL
3144 ENUMDOC
3145   This is a 16 bit reloc for the AVR that stores 8 bit pc relative
3146   short offset into 7 bits.
3147 ENUM
3148   BFD_RELOC_AVR_13_PCREL
3149 ENUMDOC
3150   This is a 16 bit reloc for the AVR that stores 13 bit pc relative
3151   short offset into 12 bits.
3152 ENUM
3153   BFD_RELOC_AVR_16_PM
3154 ENUMDOC
3155   This is a 16 bit reloc for the AVR that stores 17 bit value (usually
3156   program memory address) into 16 bits.
3157 ENUM
3158   BFD_RELOC_AVR_LO8_LDI
3159 ENUMDOC
3160   This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3161   data memory address) into 8 bit immediate value of LDI insn.
3162 ENUM
3163   BFD_RELOC_AVR_HI8_LDI
3164 ENUMDOC
3165   This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3166   of data memory address) into 8 bit immediate value of LDI insn.
3167 ENUM
3168   BFD_RELOC_AVR_HH8_LDI
3169 ENUMDOC
3170   This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3171   of program memory address) into 8 bit immediate value of LDI insn.
3172 ENUM
3173   BFD_RELOC_AVR_LO8_LDI_NEG
3174 ENUMDOC
3175   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3176   (usually data memory address) into 8 bit immediate value of SUBI insn.
3177 ENUM
3178   BFD_RELOC_AVR_HI8_LDI_NEG
3179 ENUMDOC
3180   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3181   (high 8 bit of data memory address) into 8 bit immediate value of
3182   SUBI insn.
3183 ENUM
3184   BFD_RELOC_AVR_HH8_LDI_NEG
3185 ENUMDOC
3186   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3187   (most high 8 bit of program memory address) into 8 bit immediate value
3188   of LDI or SUBI insn.
3189 ENUM
3190   BFD_RELOC_AVR_LO8_LDI_PM
3191 ENUMDOC
3192   This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3193   command address) into 8 bit immediate value of LDI insn.
3194 ENUM
3195   BFD_RELOC_AVR_HI8_LDI_PM
3196 ENUMDOC
3197   This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3198   of command address) into 8 bit immediate value of LDI insn.
3199 ENUM
3200   BFD_RELOC_AVR_HH8_LDI_PM
3201 ENUMDOC
3202   This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3203   of command address) into 8 bit immediate value of LDI insn.
3204 ENUM
3205   BFD_RELOC_AVR_LO8_LDI_PM_NEG
3206 ENUMDOC
3207   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3208   (usually command address) into 8 bit immediate value of SUBI insn.
3209 ENUM
3210   BFD_RELOC_AVR_HI8_LDI_PM_NEG
3211 ENUMDOC
3212   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3213   (high 8 bit of 16 bit command address) into 8 bit immediate value
3214   of SUBI insn.
3215 ENUM
3216   BFD_RELOC_AVR_HH8_LDI_PM_NEG
3217 ENUMDOC
3218   This is a 16 bit reloc for the AVR that stores negated 8 bit value
3219   (high 6 bit of 22 bit command address) into 8 bit immediate
3220   value of SUBI insn.
3221 ENUM
3222   BFD_RELOC_AVR_CALL
3223 ENUMDOC
3224   This is a 32 bit reloc for the AVR that stores 23 bit value
3225   into 22 bits.
3226
3227 ENUM
3228   BFD_RELOC_390_12
3229 ENUMDOC
3230    Direct 12 bit.
3231 ENUM
3232   BFD_RELOC_390_GOT12
3233 ENUMDOC
3234   12 bit GOT offset.
3235 ENUM
3236   BFD_RELOC_390_PLT32
3237 ENUMDOC
3238   32 bit PC relative PLT address.
3239 ENUM
3240   BFD_RELOC_390_COPY
3241 ENUMDOC
3242   Copy symbol at runtime.
3243 ENUM
3244   BFD_RELOC_390_GLOB_DAT
3245 ENUMDOC
3246   Create GOT entry.
3247 ENUM
3248   BFD_RELOC_390_JMP_SLOT
3249 ENUMDOC
3250   Create PLT entry.
3251 ENUM
3252   BFD_RELOC_390_RELATIVE
3253 ENUMDOC
3254   Adjust by program base.
3255 ENUM
3256   BFD_RELOC_390_GOTPC
3257 ENUMDOC
3258   32 bit PC relative offset to GOT.
3259 ENUM
3260   BFD_RELOC_390_GOT16
3261 ENUMDOC
3262   16 bit GOT offset.
3263 ENUM
3264   BFD_RELOC_390_PC16DBL
3265 ENUMDOC
3266   PC relative 16 bit shifted by 1.
3267 ENUM
3268   BFD_RELOC_390_PLT16DBL
3269 ENUMDOC
3270   16 bit PC rel. PLT shifted by 1.
3271 ENUM
3272   BFD_RELOC_390_PC32DBL
3273 ENUMDOC
3274   PC relative 32 bit shifted by 1.
3275 ENUM
3276   BFD_RELOC_390_PLT32DBL
3277 ENUMDOC
3278   32 bit PC rel. PLT shifted by 1.
3279 ENUM
3280   BFD_RELOC_390_GOTPCDBL
3281 ENUMDOC
3282   32 bit PC rel. GOT shifted by 1.
3283 ENUM
3284   BFD_RELOC_390_GOT64
3285 ENUMDOC
3286   64 bit GOT offset.
3287 ENUM
3288   BFD_RELOC_390_PLT64
3289 ENUMDOC
3290   64 bit PC relative PLT address.
3291 ENUM
3292   BFD_RELOC_390_GOTENT
3293 ENUMDOC
3294   32 bit rel. offset to GOT entry.
3295 ENUM
3296   BFD_RELOC_390_GOTOFF64
3297 ENUMDOC
3298   64 bit offset to GOT.
3299 ENUM
3300   BFD_RELOC_390_GOTPLT12
3301 ENUMDOC
3302   12-bit offset to symbol-entry within GOT, with PLT handling.
3303 ENUM
3304   BFD_RELOC_390_GOTPLT16
3305 ENUMDOC
3306   16-bit offset to symbol-entry within GOT, with PLT handling.
3307 ENUM
3308   BFD_RELOC_390_GOTPLT32
3309 ENUMDOC
3310   32-bit offset to symbol-entry within GOT, with PLT handling.
3311 ENUM
3312   BFD_RELOC_390_GOTPLT64
3313 ENUMDOC
3314   64-bit offset to symbol-entry within GOT, with PLT handling.
3315 ENUM
3316   BFD_RELOC_390_GOTPLTENT
3317 ENUMDOC
3318   32-bit rel. offset to symbol-entry within GOT, with PLT handling.
3319 ENUM
3320   BFD_RELOC_390_PLTOFF16
3321 ENUMDOC
3322   16-bit rel. offset from the GOT to a PLT entry.
3323 ENUM
3324   BFD_RELOC_390_PLTOFF32
3325 ENUMDOC
3326   32-bit rel. offset from the GOT to a PLT entry.
3327 ENUM
3328   BFD_RELOC_390_PLTOFF64
3329 ENUMDOC
3330   64-bit rel. offset from the GOT to a PLT entry.
3331
3332 ENUM
3333   BFD_RELOC_390_TLS_LOAD
3334 ENUMX
3335   BFD_RELOC_390_TLS_GDCALL
3336 ENUMX
3337   BFD_RELOC_390_TLS_LDCALL
3338 ENUMX
3339   BFD_RELOC_390_TLS_GD32
3340 ENUMX
3341   BFD_RELOC_390_TLS_GD64
3342 ENUMX
3343   BFD_RELOC_390_TLS_GOTIE12
3344 ENUMX
3345   BFD_RELOC_390_TLS_GOTIE32
3346 ENUMX
3347   BFD_RELOC_390_TLS_GOTIE64
3348 ENUMX
3349   BFD_RELOC_390_TLS_LDM32
3350 ENUMX
3351   BFD_RELOC_390_TLS_LDM64
3352 ENUMX
3353   BFD_RELOC_390_TLS_IE32
3354 ENUMX
3355   BFD_RELOC_390_TLS_IE64
3356 ENUMX
3357   BFD_RELOC_390_TLS_IEENT
3358 ENUMX
3359   BFD_RELOC_390_TLS_LE32
3360 ENUMX
3361   BFD_RELOC_390_TLS_LE64
3362 ENUMX
3363   BFD_RELOC_390_TLS_LDO32
3364 ENUMX
3365   BFD_RELOC_390_TLS_LDO64
3366 ENUMX
3367   BFD_RELOC_390_TLS_DTPMOD
3368 ENUMX
3369   BFD_RELOC_390_TLS_DTPOFF
3370 ENUMX
3371   BFD_RELOC_390_TLS_TPOFF
3372 ENUMDOC
3373   s390 tls relocations.
3374
3375 ENUM
3376   BFD_RELOC_IP2K_FR9
3377 ENUMDOC
3378   Scenix IP2K - 9-bit register number / data address
3379 ENUM
3380   BFD_RELOC_IP2K_BANK
3381 ENUMDOC
3382   Scenix IP2K - 4-bit register/data bank number
3383 ENUM
3384   BFD_RELOC_IP2K_ADDR16CJP
3385 ENUMDOC
3386   Scenix IP2K - low 13 bits of instruction word address
3387 ENUM
3388   BFD_RELOC_IP2K_PAGE3
3389 ENUMDOC
3390   Scenix IP2K - high 3 bits of instruction word address
3391 ENUM
3392   BFD_RELOC_IP2K_LO8DATA
3393 ENUMX
3394   BFD_RELOC_IP2K_HI8DATA
3395 ENUMX
3396   BFD_RELOC_IP2K_EX8DATA
3397 ENUMDOC
3398   Scenix IP2K - ext/low/high 8 bits of data address
3399 ENUM
3400   BFD_RELOC_IP2K_LO8INSN
3401 ENUMX
3402   BFD_RELOC_IP2K_HI8INSN
3403 ENUMDOC
3404   Scenix IP2K - low/high 8 bits of instruction word address
3405 ENUM
3406   BFD_RELOC_IP2K_PC_SKIP
3407 ENUMDOC
3408   Scenix IP2K - even/odd PC modifier to modify snb pcl.0
3409 ENUM
3410   BFD_RELOC_IP2K_TEXT
3411 ENUMDOC
3412   Scenix IP2K - 16 bit word address in text section.
3413 ENUM
3414   BFD_RELOC_IP2K_FR_OFFSET
3415 ENUMDOC
3416   Scenix IP2K - 7-bit sp or dp offset
3417 ENUM
3418   BFD_RELOC_VPE4KMATH_DATA
3419 ENUMX
3420   BFD_RELOC_VPE4KMATH_INSN
3421 ENUMDOC
3422   Scenix VPE4K coprocessor - data/insn-space addressing
3423
3424 ENUM
3425   BFD_RELOC_VTABLE_INHERIT
3426 ENUMX
3427   BFD_RELOC_VTABLE_ENTRY
3428 ENUMDOC
3429   These two relocations are used by the linker to determine which of
3430   the entries in a C++ virtual function table are actually used.  When
3431   the --gc-sections option is given, the linker will zero out the entries
3432   that are not used, so that the code for those functions need not be
3433   included in the output.
3434
3435   VTABLE_INHERIT is a zero-space relocation used to describe to the
3436   linker the inheritence tree of a C++ virtual function table.  The
3437   relocation's symbol should be the parent class' vtable, and the
3438   relocation should be located at the child vtable.
3439
3440   VTABLE_ENTRY is a zero-space relocation that describes the use of a
3441   virtual function table entry.  The reloc's symbol should refer to the
3442   table of the class mentioned in the code.  Off of that base, an offset
3443   describes the entry that is being used.  For Rela hosts, this offset
3444   is stored in the reloc's addend.  For Rel hosts, we are forced to put
3445   this offset in the reloc's section offset.
3446
3447 ENUM
3448   BFD_RELOC_IA64_IMM14
3449 ENUMX
3450   BFD_RELOC_IA64_IMM22
3451 ENUMX
3452   BFD_RELOC_IA64_IMM64
3453 ENUMX
3454   BFD_RELOC_IA64_DIR32MSB
3455 ENUMX
3456   BFD_RELOC_IA64_DIR32LSB
3457 ENUMX
3458   BFD_RELOC_IA64_DIR64MSB
3459 ENUMX
3460   BFD_RELOC_IA64_DIR64LSB
3461 ENUMX
3462   BFD_RELOC_IA64_GPREL22
3463 ENUMX
3464   BFD_RELOC_IA64_GPREL64I
3465 ENUMX
3466   BFD_RELOC_IA64_GPREL32MSB
3467 ENUMX
3468   BFD_RELOC_IA64_GPREL32LSB
3469 ENUMX
3470   BFD_RELOC_IA64_GPREL64MSB
3471 ENUMX
3472   BFD_RELOC_IA64_GPREL64LSB
3473 ENUMX
3474   BFD_RELOC_IA64_LTOFF22
3475 ENUMX
3476   BFD_RELOC_IA64_LTOFF64I
3477 ENUMX
3478   BFD_RELOC_IA64_PLTOFF22
3479 ENUMX
3480   BFD_RELOC_IA64_PLTOFF64I
3481 ENUMX
3482   BFD_RELOC_IA64_PLTOFF64MSB
3483 ENUMX
3484   BFD_RELOC_IA64_PLTOFF64LSB
3485 ENUMX
3486   BFD_RELOC_IA64_FPTR64I
3487 ENUMX
3488   BFD_RELOC_IA64_FPTR32MSB
3489 ENUMX
3490   BFD_RELOC_IA64_FPTR32LSB
3491 ENUMX
3492   BFD_RELOC_IA64_FPTR64MSB
3493 ENUMX
3494   BFD_RELOC_IA64_FPTR64LSB
3495 ENUMX
3496   BFD_RELOC_IA64_PCREL21B
3497 ENUMX
3498   BFD_RELOC_IA64_PCREL21BI
3499 ENUMX
3500   BFD_RELOC_IA64_PCREL21M
3501 ENUMX
3502   BFD_RELOC_IA64_PCREL21F
3503 ENUMX
3504   BFD_RELOC_IA64_PCREL22
3505 ENUMX
3506   BFD_RELOC_IA64_PCREL60B
3507 ENUMX
3508   BFD_RELOC_IA64_PCREL64I
3509 ENUMX
3510   BFD_RELOC_IA64_PCREL32MSB
3511 ENUMX
3512   BFD_RELOC_IA64_PCREL32LSB
3513 ENUMX
3514   BFD_RELOC_IA64_PCREL64MSB
3515 ENUMX
3516   BFD_RELOC_IA64_PCREL64LSB
3517 ENUMX
3518   BFD_RELOC_IA64_LTOFF_FPTR22
3519 ENUMX
3520   BFD_RELOC_IA64_LTOFF_FPTR64I
3521 ENUMX
3522   BFD_RELOC_IA64_LTOFF_FPTR32MSB
3523 ENUMX
3524   BFD_RELOC_IA64_LTOFF_FPTR32LSB
3525 ENUMX
3526   BFD_RELOC_IA64_LTOFF_FPTR64MSB
3527 ENUMX
3528   BFD_RELOC_IA64_LTOFF_FPTR64LSB
3529 ENUMX
3530   BFD_RELOC_IA64_SEGREL32MSB
3531 ENUMX
3532   BFD_RELOC_IA64_SEGREL32LSB
3533 ENUMX
3534   BFD_RELOC_IA64_SEGREL64MSB
3535 ENUMX
3536   BFD_RELOC_IA64_SEGREL64LSB
3537 ENUMX
3538   BFD_RELOC_IA64_SECREL32MSB
3539 ENUMX
3540   BFD_RELOC_IA64_SECREL32LSB
3541 ENUMX
3542   BFD_RELOC_IA64_SECREL64MSB
3543 ENUMX
3544   BFD_RELOC_IA64_SECREL64LSB
3545 ENUMX
3546   BFD_RELOC_IA64_REL32MSB
3547 ENUMX
3548   BFD_RELOC_IA64_REL32LSB
3549 ENUMX
3550   BFD_RELOC_IA64_REL64MSB
3551 ENUMX
3552   BFD_RELOC_IA64_REL64LSB
3553 ENUMX
3554   BFD_RELOC_IA64_LTV32MSB
3555 ENUMX
3556   BFD_RELOC_IA64_LTV32LSB
3557 ENUMX
3558   BFD_RELOC_IA64_LTV64MSB
3559 ENUMX
3560   BFD_RELOC_IA64_LTV64LSB
3561 ENUMX
3562   BFD_RELOC_IA64_IPLTMSB
3563 ENUMX
3564   BFD_RELOC_IA64_IPLTLSB
3565 ENUMX
3566   BFD_RELOC_IA64_COPY
3567 ENUMX
3568   BFD_RELOC_IA64_LTOFF22X
3569 ENUMX
3570   BFD_RELOC_IA64_LDXMOV
3571 ENUMX
3572   BFD_RELOC_IA64_TPREL14
3573 ENUMX
3574   BFD_RELOC_IA64_TPREL22
3575 ENUMX
3576   BFD_RELOC_IA64_TPREL64I
3577 ENUMX
3578   BFD_RELOC_IA64_TPREL64MSB
3579 ENUMX
3580   BFD_RELOC_IA64_TPREL64LSB
3581 ENUMX
3582   BFD_RELOC_IA64_LTOFF_TPREL22
3583 ENUMX
3584   BFD_RELOC_IA64_DTPMOD64MSB
3585 ENUMX
3586   BFD_RELOC_IA64_DTPMOD64LSB
3587 ENUMX
3588   BFD_RELOC_IA64_LTOFF_DTPMOD22
3589 ENUMX
3590   BFD_RELOC_IA64_DTPREL14
3591 ENUMX
3592   BFD_RELOC_IA64_DTPREL22
3593 ENUMX
3594   BFD_RELOC_IA64_DTPREL64I
3595 ENUMX
3596   BFD_RELOC_IA64_DTPREL32MSB
3597 ENUMX
3598   BFD_RELOC_IA64_DTPREL32LSB
3599 ENUMX
3600   BFD_RELOC_IA64_DTPREL64MSB
3601 ENUMX
3602   BFD_RELOC_IA64_DTPREL64LSB
3603 ENUMX
3604   BFD_RELOC_IA64_LTOFF_DTPREL22
3605 ENUMDOC
3606   Intel IA64 Relocations.
3607
3608 ENUM
3609   BFD_RELOC_M68HC11_HI8
3610 ENUMDOC
3611   Motorola 68HC11 reloc.
3612   This is the 8 bit high part of an absolute address.
3613 ENUM
3614   BFD_RELOC_M68HC11_LO8
3615 ENUMDOC
3616   Motorola 68HC11 reloc.
3617   This is the 8 bit low part of an absolute address.
3618 ENUM
3619   BFD_RELOC_M68HC11_3B
3620 ENUMDOC
3621   Motorola 68HC11 reloc.
3622   This is the 3 bit of a value.
3623 ENUM
3624   BFD_RELOC_M68HC11_RL_JUMP
3625 ENUMDOC
3626   Motorola 68HC11 reloc.
3627   This reloc marks the beginning of a jump/call instruction.
3628   It is used for linker relaxation to correctly identify beginning
3629   of instruction and change some branchs to use PC-relative
3630   addressing mode.
3631 ENUM
3632   BFD_RELOC_M68HC11_RL_GROUP
3633 ENUMDOC
3634   Motorola 68HC11 reloc.
3635   This reloc marks a group of several instructions that gcc generates
3636   and for which the linker relaxation pass can modify and/or remove
3637   some of them.
3638 ENUM
3639   BFD_RELOC_M68HC11_LO16
3640 ENUMDOC
3641   Motorola 68HC11 reloc.
3642   This is the 16-bit lower part of an address.  It is used for 'call'
3643   instruction to specify the symbol address without any special
3644   transformation (due to memory bank window).
3645 ENUM
3646   BFD_RELOC_M68HC11_PAGE
3647 ENUMDOC
3648   Motorola 68HC11 reloc.
3649   This is a 8-bit reloc that specifies the page number of an address.
3650   It is used by 'call' instruction to specify the page number of
3651   the symbol.
3652 ENUM
3653   BFD_RELOC_M68HC11_24
3654 ENUMDOC
3655   Motorola 68HC11 reloc.
3656   This is a 24-bit reloc that represents the address with a 16-bit
3657   value and a 8-bit page number.  The symbol address is transformed
3658   to follow the 16K memory bank of 68HC12 (seen as mapped in the window).
3659
3660 ENUM
3661   BFD_RELOC_CRIS_BDISP8
3662 ENUMX
3663   BFD_RELOC_CRIS_UNSIGNED_5
3664 ENUMX
3665   BFD_RELOC_CRIS_SIGNED_6
3666 ENUMX
3667   BFD_RELOC_CRIS_UNSIGNED_6
3668 ENUMX
3669   BFD_RELOC_CRIS_UNSIGNED_4
3670 ENUMDOC
3671   These relocs are only used within the CRIS assembler.  They are not
3672   (at present) written to any object files.
3673 ENUM
3674   BFD_RELOC_CRIS_COPY
3675 ENUMX
3676   BFD_RELOC_CRIS_GLOB_DAT
3677 ENUMX
3678   BFD_RELOC_CRIS_JUMP_SLOT
3679 ENUMX
3680   BFD_RELOC_CRIS_RELATIVE
3681 ENUMDOC
3682   Relocs used in ELF shared libraries for CRIS.
3683 ENUM
3684   BFD_RELOC_CRIS_32_GOT
3685 ENUMDOC
3686   32-bit offset to symbol-entry within GOT.
3687 ENUM
3688   BFD_RELOC_CRIS_16_GOT
3689 ENUMDOC
3690   16-bit offset to symbol-entry within GOT.
3691 ENUM
3692   BFD_RELOC_CRIS_32_GOTPLT
3693 ENUMDOC
3694   32-bit offset to symbol-entry within GOT, with PLT handling.
3695 ENUM
3696   BFD_RELOC_CRIS_16_GOTPLT
3697 ENUMDOC
3698   16-bit offset to symbol-entry within GOT, with PLT handling.
3699 ENUM
3700   BFD_RELOC_CRIS_32_GOTREL
3701 ENUMDOC
3702   32-bit offset to symbol, relative to GOT.
3703 ENUM
3704   BFD_RELOC_CRIS_32_PLT_GOTREL
3705 ENUMDOC
3706   32-bit offset to symbol with PLT entry, relative to GOT.
3707 ENUM
3708   BFD_RELOC_CRIS_32_PLT_PCREL
3709 ENUMDOC
3710   32-bit offset to symbol with PLT entry, relative to this relocation.
3711
3712 ENUM
3713   BFD_RELOC_860_COPY
3714 ENUMX
3715   BFD_RELOC_860_GLOB_DAT
3716 ENUMX
3717   BFD_RELOC_860_JUMP_SLOT
3718 ENUMX
3719   BFD_RELOC_860_RELATIVE
3720 ENUMX
3721   BFD_RELOC_860_PC26
3722 ENUMX
3723   BFD_RELOC_860_PLT26
3724 ENUMX
3725   BFD_RELOC_860_PC16
3726 ENUMX
3727   BFD_RELOC_860_LOW0
3728 ENUMX
3729   BFD_RELOC_860_SPLIT0
3730 ENUMX
3731   BFD_RELOC_860_LOW1
3732 ENUMX
3733   BFD_RELOC_860_SPLIT1
3734 ENUMX
3735   BFD_RELOC_860_LOW2
3736 ENUMX
3737   BFD_RELOC_860_SPLIT2
3738 ENUMX
3739   BFD_RELOC_860_LOW3
3740 ENUMX
3741   BFD_RELOC_860_LOGOT0
3742 ENUMX
3743   BFD_RELOC_860_SPGOT0
3744 ENUMX
3745   BFD_RELOC_860_LOGOT1
3746 ENUMX
3747   BFD_RELOC_860_SPGOT1
3748 ENUMX
3749   BFD_RELOC_860_LOGOTOFF0
3750 ENUMX
3751   BFD_RELOC_860_SPGOTOFF0
3752 ENUMX
3753   BFD_RELOC_860_LOGOTOFF1
3754 ENUMX
3755   BFD_RELOC_860_SPGOTOFF1
3756 ENUMX
3757   BFD_RELOC_860_LOGOTOFF2
3758 ENUMX
3759   BFD_RELOC_860_LOGOTOFF3
3760 ENUMX
3761   BFD_RELOC_860_LOPC
3762 ENUMX
3763   BFD_RELOC_860_HIGHADJ
3764 ENUMX
3765   BFD_RELOC_860_HAGOT
3766 ENUMX
3767   BFD_RELOC_860_HAGOTOFF
3768 ENUMX
3769   BFD_RELOC_860_HAPC
3770 ENUMX
3771   BFD_RELOC_860_HIGH
3772 ENUMX
3773   BFD_RELOC_860_HIGOT
3774 ENUMX
3775   BFD_RELOC_860_HIGOTOFF
3776 ENUMDOC
3777   Intel i860 Relocations.
3778
3779 ENUM
3780   BFD_RELOC_OPENRISC_ABS_26
3781 ENUMX
3782   BFD_RELOC_OPENRISC_REL_26
3783 ENUMDOC
3784   OpenRISC Relocations.
3785
3786 ENUM
3787   BFD_RELOC_H8_DIR16A8
3788 ENUMX
3789   BFD_RELOC_H8_DIR16R8
3790 ENUMX
3791   BFD_RELOC_H8_DIR24A8
3792 ENUMX
3793   BFD_RELOC_H8_DIR24R8
3794 ENUMX
3795   BFD_RELOC_H8_DIR32A16
3796 ENUMDOC
3797   H8 elf Relocations.
3798
3799 ENUM
3800   BFD_RELOC_XSTORMY16_REL_12
3801 ENUMX
3802   BFD_RELOC_XSTORMY16_12
3803 ENUMX
3804   BFD_RELOC_XSTORMY16_24
3805 ENUMX
3806   BFD_RELOC_XSTORMY16_FPTR16
3807 ENUMDOC
3808   Sony Xstormy16 Relocations.
3809
3810 ENUM
3811   BFD_RELOC_VAX_GLOB_DAT
3812 ENUMX
3813   BFD_RELOC_VAX_JMP_SLOT
3814 ENUMX
3815   BFD_RELOC_VAX_RELATIVE
3816 ENUMDOC
3817   Relocations used by VAX ELF.
3818
3819 ENUM
3820   BFD_RELOC_MSP430_10_PCREL
3821 ENUMX
3822   BFD_RELOC_MSP430_16_PCREL
3823 ENUMX
3824   BFD_RELOC_MSP430_16
3825 ENUMX
3826   BFD_RELOC_MSP430_16_PCREL_BYTE
3827 ENUMX
3828   BFD_RELOC_MSP430_16_BYTE
3829 ENUMDOC
3830   msp430 specific relocation codes
3831
3832 ENUM
3833   BFD_RELOC_IQ2000_OFFSET_16
3834 ENUMX
3835   BFD_RELOC_IQ2000_OFFSET_21
3836 ENUMX
3837   BFD_RELOC_IQ2000_UHI16
3838 ENUMDOC
3839   IQ2000 Relocations.
3840
3841 ENUM
3842   BFD_RELOC_XTENSA_RTLD
3843 ENUMDOC
3844   Special Xtensa relocation used only by PLT entries in ELF shared
3845   objects to indicate that the runtime linker should set the value
3846   to one of its own internal functions or data structures.
3847 ENUM
3848   BFD_RELOC_XTENSA_GLOB_DAT
3849 ENUMX
3850   BFD_RELOC_XTENSA_JMP_SLOT
3851 ENUMX
3852   BFD_RELOC_XTENSA_RELATIVE
3853 ENUMDOC
3854   Xtensa relocations for ELF shared objects.
3855 ENUM
3856   BFD_RELOC_XTENSA_PLT
3857 ENUMDOC
3858   Xtensa relocation used in ELF object files for symbols that may require
3859   PLT entries.  Otherwise, this is just a generic 32-bit relocation.
3860 ENUM
3861   BFD_RELOC_XTENSA_OP0
3862 ENUMX
3863   BFD_RELOC_XTENSA_OP1
3864 ENUMX
3865   BFD_RELOC_XTENSA_OP2
3866 ENUMDOC
3867   Generic Xtensa relocations.  Only the operand number is encoded
3868   in the relocation.  The details are determined by extracting the
3869   instruction opcode.
3870 ENUM
3871   BFD_RELOC_XTENSA_ASM_EXPAND
3872 ENUMDOC
3873   Xtensa relocation to mark that the assembler expanded the
3874   instructions from an original target.  The expansion size is
3875   encoded in the reloc size.
3876 ENUM
3877   BFD_RELOC_XTENSA_ASM_SIMPLIFY
3878 ENUMDOC
3879   Xtensa relocation to mark that the linker should simplify
3880   assembler-expanded instructions.  This is commonly used
3881   internally by the linker after analysis of a
3882   BFD_RELOC_XTENSA_ASM_EXPAND.
3883
3884 ENDSENUM
3885   BFD_RELOC_UNUSED
3886 CODE_FRAGMENT
3887 .
3888 .typedef enum bfd_reloc_code_real bfd_reloc_code_real_type;
3889 */
3890
3891 /*
3892 FUNCTION
3893         bfd_reloc_type_lookup
3894
3895 SYNOPSIS
3896         reloc_howto_type *bfd_reloc_type_lookup
3897           (bfd *abfd, bfd_reloc_code_real_type code);
3898
3899 DESCRIPTION
3900         Return a pointer to a howto structure which, when
3901         invoked, will perform the relocation @var{code} on data from the
3902         architecture noted.
3903
3904 */
3905
3906 reloc_howto_type *
3907 bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
3908 {
3909   return BFD_SEND (abfd, reloc_type_lookup, (abfd, code));
3910 }
3911
3912 static reloc_howto_type bfd_howto_32 =
3913 HOWTO (0, 00, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "VRT32", FALSE, 0xffffffff, 0xffffffff, TRUE);
3914
3915 /*
3916 INTERNAL_FUNCTION
3917         bfd_default_reloc_type_lookup
3918
3919 SYNOPSIS
3920         reloc_howto_type *bfd_default_reloc_type_lookup
3921           (bfd *abfd, bfd_reloc_code_real_type  code);
3922
3923 DESCRIPTION
3924         Provides a default relocation lookup routine for any architecture.
3925
3926 */
3927
3928 reloc_howto_type *
3929 bfd_default_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
3930 {
3931   switch (code)
3932     {
3933     case BFD_RELOC_CTOR:
3934       /* The type of reloc used in a ctor, which will be as wide as the
3935          address - so either a 64, 32, or 16 bitter.  */
3936       switch (bfd_get_arch_info (abfd)->bits_per_address)
3937         {
3938         case 64:
3939           BFD_FAIL ();
3940         case 32:
3941           return &bfd_howto_32;
3942         case 16:
3943           BFD_FAIL ();
3944         default:
3945           BFD_FAIL ();
3946         }
3947     default:
3948       BFD_FAIL ();
3949     }
3950   return NULL;
3951 }
3952
3953 /*
3954 FUNCTION
3955         bfd_get_reloc_code_name
3956
3957 SYNOPSIS
3958         const char *bfd_get_reloc_code_name (bfd_reloc_code_real_type code);
3959
3960 DESCRIPTION
3961         Provides a printable name for the supplied relocation code.
3962         Useful mainly for printing error messages.
3963 */
3964
3965 const char *
3966 bfd_get_reloc_code_name (bfd_reloc_code_real_type code)
3967 {
3968   if (code > BFD_RELOC_UNUSED)
3969     return 0;
3970   return bfd_reloc_code_real_names[code];
3971 }
3972
3973 /*
3974 INTERNAL_FUNCTION
3975         bfd_generic_relax_section
3976
3977 SYNOPSIS
3978         bfd_boolean bfd_generic_relax_section
3979           (bfd *abfd,
3980            asection *section,
3981            struct bfd_link_info *,
3982            bfd_boolean *);
3983
3984 DESCRIPTION
3985         Provides default handling for relaxing for back ends which
3986         don't do relaxing -- i.e., does nothing.
3987 */
3988
3989 bfd_boolean
3990 bfd_generic_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
3991                            asection *section ATTRIBUTE_UNUSED,
3992                            struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
3993                            bfd_boolean *again)
3994 {
3995   *again = FALSE;
3996   return TRUE;
3997 }
3998
3999 /*
4000 INTERNAL_FUNCTION
4001         bfd_generic_gc_sections
4002
4003 SYNOPSIS
4004         bfd_boolean bfd_generic_gc_sections
4005           (bfd *, struct bfd_link_info *);
4006
4007 DESCRIPTION
4008         Provides default handling for relaxing for back ends which
4009         don't do section gc -- i.e., does nothing.
4010 */
4011
4012 bfd_boolean
4013 bfd_generic_gc_sections (bfd *abfd ATTRIBUTE_UNUSED,
4014                          struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4015 {
4016   return TRUE;
4017 }
4018
4019 /*
4020 INTERNAL_FUNCTION
4021         bfd_generic_merge_sections
4022
4023 SYNOPSIS
4024         bfd_boolean bfd_generic_merge_sections
4025           (bfd *, struct bfd_link_info *);
4026
4027 DESCRIPTION
4028         Provides default handling for SEC_MERGE section merging for back ends
4029         which don't have SEC_MERGE support -- i.e., does nothing.
4030 */
4031
4032 bfd_boolean
4033 bfd_generic_merge_sections (bfd *abfd ATTRIBUTE_UNUSED,
4034                             struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4035 {
4036   return TRUE;
4037 }
4038
4039 /*
4040 INTERNAL_FUNCTION
4041         bfd_generic_get_relocated_section_contents
4042
4043 SYNOPSIS
4044         bfd_byte *bfd_generic_get_relocated_section_contents
4045           (bfd *abfd,
4046            struct bfd_link_info *link_info,
4047            struct bfd_link_order *link_order,
4048            bfd_byte *data,
4049            bfd_boolean relocatable,
4050            asymbol **symbols);
4051
4052 DESCRIPTION
4053         Provides default handling of relocation effort for back ends
4054         which can't be bothered to do it efficiently.
4055
4056 */
4057
4058 bfd_byte *
4059 bfd_generic_get_relocated_section_contents (bfd *abfd,
4060                                             struct bfd_link_info *link_info,
4061                                             struct bfd_link_order *link_order,
4062                                             bfd_byte *data,
4063                                             bfd_boolean relocatable,
4064                                             asymbol **symbols)
4065 {
4066   /* Get enough memory to hold the stuff.  */
4067   bfd *input_bfd = link_order->u.indirect.section->owner;
4068   asection *input_section = link_order->u.indirect.section;
4069
4070   long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
4071   arelent **reloc_vector = NULL;
4072   long reloc_count;
4073
4074   if (reloc_size < 0)
4075     goto error_return;
4076
4077   reloc_vector = bfd_malloc (reloc_size);
4078   if (reloc_vector == NULL && reloc_size != 0)
4079     goto error_return;
4080
4081   /* Read in the section.  */
4082   if (!bfd_get_section_contents (input_bfd,
4083                                  input_section,
4084                                  data,
4085                                  0,
4086                                  input_section->_raw_size))
4087     goto error_return;
4088
4089   /* We're not relaxing the section, so just copy the size info.  */
4090   input_section->_cooked_size = input_section->_raw_size;
4091   input_section->reloc_done = TRUE;
4092
4093   reloc_count = bfd_canonicalize_reloc (input_bfd,
4094                                         input_section,
4095                                         reloc_vector,
4096                                         symbols);
4097   if (reloc_count < 0)
4098     goto error_return;
4099
4100   if (reloc_count > 0)
4101     {
4102       arelent **parent;
4103       for (parent = reloc_vector; *parent != NULL; parent++)
4104         {
4105           char *error_message = NULL;
4106           bfd_reloc_status_type r =
4107             bfd_perform_relocation (input_bfd,
4108                                     *parent,
4109                                     data,
4110                                     input_section,
4111                                     relocatable ? abfd : NULL,
4112                                     &error_message);
4113
4114           if (relocatable)
4115             {
4116               asection *os = input_section->output_section;
4117
4118               /* A partial link, so keep the relocs.  */
4119               os->orelocation[os->reloc_count] = *parent;
4120               os->reloc_count++;
4121             }
4122
4123           if (r != bfd_reloc_ok)
4124             {
4125               switch (r)
4126                 {
4127                 case bfd_reloc_undefined:
4128                   if (!((*link_info->callbacks->undefined_symbol)
4129                         (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4130                          input_bfd, input_section, (*parent)->address,
4131                          TRUE)))
4132                     goto error_return;
4133                   break;
4134                 case bfd_reloc_dangerous:
4135                   BFD_ASSERT (error_message != NULL);
4136                   if (!((*link_info->callbacks->reloc_dangerous)
4137                         (link_info, error_message, input_bfd, input_section,
4138                          (*parent)->address)))
4139                     goto error_return;
4140                   break;
4141                 case bfd_reloc_overflow:
4142                   if (!((*link_info->callbacks->reloc_overflow)
4143                         (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4144                          (*parent)->howto->name, (*parent)->addend,
4145                          input_bfd, input_section, (*parent)->address)))
4146                     goto error_return;
4147                   break;
4148                 case bfd_reloc_outofrange:
4149                 default:
4150                   abort ();
4151                   break;
4152                 }
4153
4154             }
4155         }
4156     }
4157   if (reloc_vector != NULL)
4158     free (reloc_vector);
4159   return data;
4160
4161 error_return:
4162   if (reloc_vector != NULL)
4163     free (reloc_vector);
4164   return NULL;
4165 }