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2003-08-25 Maciej W. Rozycki <macro@ds2.pg.gda.pl>
[deliverable/binutils-gdb.git] / 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 ENUMDOC
2120 MIPS ELF relocations.
2121 COMMENT
2122
2123 ENUM
2124 BFD_RELOC_FRV_LABEL16
2125 ENUMX
2126 BFD_RELOC_FRV_LABEL24
2127 ENUMX
2128 BFD_RELOC_FRV_LO16
2129 ENUMX
2130 BFD_RELOC_FRV_HI16
2131 ENUMX
2132 BFD_RELOC_FRV_GPREL12
2133 ENUMX
2134 BFD_RELOC_FRV_GPRELU12
2135 ENUMX
2136 BFD_RELOC_FRV_GPREL32
2137 ENUMX
2138 BFD_RELOC_FRV_GPRELHI
2139 ENUMX
2140 BFD_RELOC_FRV_GPRELLO
2141 ENUMDOC
2142 Fujitsu Frv Relocations.
2143 COMMENT
2144
2145 ENUM
2146 BFD_RELOC_MN10300_GOTOFF24
2147 ENUMDOC
2148 This is a 24bit GOT-relative reloc for the mn10300.
2149 ENUM
2150 BFD_RELOC_MN10300_GOT32
2151 ENUMDOC
2152 This is a 32bit GOT-relative reloc for the mn10300, offset by two bytes
2153 in the instruction.
2154 ENUM
2155 BFD_RELOC_MN10300_GOT24
2156 ENUMDOC
2157 This is a 24bit GOT-relative reloc for the mn10300, offset by two bytes
2158 in the instruction.
2159 ENUM
2160 BFD_RELOC_MN10300_GOT16
2161 ENUMDOC
2162 This is a 16bit GOT-relative reloc for the mn10300, offset by two bytes
2163 in the instruction.
2164 ENUM
2165 BFD_RELOC_MN10300_COPY
2166 ENUMDOC
2167 Copy symbol at runtime.
2168 ENUM
2169 BFD_RELOC_MN10300_GLOB_DAT
2170 ENUMDOC
2171 Create GOT entry.
2172 ENUM
2173 BFD_RELOC_MN10300_JMP_SLOT
2174 ENUMDOC
2175 Create PLT entry.
2176 ENUM
2177 BFD_RELOC_MN10300_RELATIVE
2178 ENUMDOC
2179 Adjust by program base.
2180 COMMENT
2181
2182 ENUM
2183 BFD_RELOC_386_GOT32
2184 ENUMX
2185 BFD_RELOC_386_PLT32
2186 ENUMX
2187 BFD_RELOC_386_COPY
2188 ENUMX
2189 BFD_RELOC_386_GLOB_DAT
2190 ENUMX
2191 BFD_RELOC_386_JUMP_SLOT
2192 ENUMX
2193 BFD_RELOC_386_RELATIVE
2194 ENUMX
2195 BFD_RELOC_386_GOTOFF
2196 ENUMX
2197 BFD_RELOC_386_GOTPC
2198 ENUMX
2199 BFD_RELOC_386_TLS_TPOFF
2200 ENUMX
2201 BFD_RELOC_386_TLS_IE
2202 ENUMX
2203 BFD_RELOC_386_TLS_GOTIE
2204 ENUMX
2205 BFD_RELOC_386_TLS_LE
2206 ENUMX
2207 BFD_RELOC_386_TLS_GD
2208 ENUMX
2209 BFD_RELOC_386_TLS_LDM
2210 ENUMX
2211 BFD_RELOC_386_TLS_LDO_32
2212 ENUMX
2213 BFD_RELOC_386_TLS_IE_32
2214 ENUMX
2215 BFD_RELOC_386_TLS_LE_32
2216 ENUMX
2217 BFD_RELOC_386_TLS_DTPMOD32
2218 ENUMX
2219 BFD_RELOC_386_TLS_DTPOFF32
2220 ENUMX
2221 BFD_RELOC_386_TLS_TPOFF32
2222 ENUMDOC
2223 i386/elf relocations
2224
2225 ENUM
2226 BFD_RELOC_X86_64_GOT32
2227 ENUMX
2228 BFD_RELOC_X86_64_PLT32
2229 ENUMX
2230 BFD_RELOC_X86_64_COPY
2231 ENUMX
2232 BFD_RELOC_X86_64_GLOB_DAT
2233 ENUMX
2234 BFD_RELOC_X86_64_JUMP_SLOT
2235 ENUMX
2236 BFD_RELOC_X86_64_RELATIVE
2237 ENUMX
2238 BFD_RELOC_X86_64_GOTPCREL
2239 ENUMX
2240 BFD_RELOC_X86_64_32S
2241 ENUMX
2242 BFD_RELOC_X86_64_DTPMOD64
2243 ENUMX
2244 BFD_RELOC_X86_64_DTPOFF64
2245 ENUMX
2246 BFD_RELOC_X86_64_TPOFF64
2247 ENUMX
2248 BFD_RELOC_X86_64_TLSGD
2249 ENUMX
2250 BFD_RELOC_X86_64_TLSLD
2251 ENUMX
2252 BFD_RELOC_X86_64_DTPOFF32
2253 ENUMX
2254 BFD_RELOC_X86_64_GOTTPOFF
2255 ENUMX
2256 BFD_RELOC_X86_64_TPOFF32
2257 ENUMDOC
2258 x86-64/elf relocations
2259
2260 ENUM
2261 BFD_RELOC_NS32K_IMM_8
2262 ENUMX
2263 BFD_RELOC_NS32K_IMM_16
2264 ENUMX
2265 BFD_RELOC_NS32K_IMM_32
2266 ENUMX
2267 BFD_RELOC_NS32K_IMM_8_PCREL
2268 ENUMX
2269 BFD_RELOC_NS32K_IMM_16_PCREL
2270 ENUMX
2271 BFD_RELOC_NS32K_IMM_32_PCREL
2272 ENUMX
2273 BFD_RELOC_NS32K_DISP_8
2274 ENUMX
2275 BFD_RELOC_NS32K_DISP_16
2276 ENUMX
2277 BFD_RELOC_NS32K_DISP_32
2278 ENUMX
2279 BFD_RELOC_NS32K_DISP_8_PCREL
2280 ENUMX
2281 BFD_RELOC_NS32K_DISP_16_PCREL
2282 ENUMX
2283 BFD_RELOC_NS32K_DISP_32_PCREL
2284 ENUMDOC
2285 ns32k relocations
2286
2287 ENUM
2288 BFD_RELOC_PDP11_DISP_8_PCREL
2289 ENUMX
2290 BFD_RELOC_PDP11_DISP_6_PCREL
2291 ENUMDOC
2292 PDP11 relocations
2293
2294 ENUM
2295 BFD_RELOC_PJ_CODE_HI16
2296 ENUMX
2297 BFD_RELOC_PJ_CODE_LO16
2298 ENUMX
2299 BFD_RELOC_PJ_CODE_DIR16
2300 ENUMX
2301 BFD_RELOC_PJ_CODE_DIR32
2302 ENUMX
2303 BFD_RELOC_PJ_CODE_REL16
2304 ENUMX
2305 BFD_RELOC_PJ_CODE_REL32
2306 ENUMDOC
2307 Picojava relocs. Not all of these appear in object files.
2308
2309 ENUM
2310 BFD_RELOC_PPC_B26
2311 ENUMX
2312 BFD_RELOC_PPC_BA26
2313 ENUMX
2314 BFD_RELOC_PPC_TOC16
2315 ENUMX
2316 BFD_RELOC_PPC_B16
2317 ENUMX
2318 BFD_RELOC_PPC_B16_BRTAKEN
2319 ENUMX
2320 BFD_RELOC_PPC_B16_BRNTAKEN
2321 ENUMX
2322 BFD_RELOC_PPC_BA16
2323 ENUMX
2324 BFD_RELOC_PPC_BA16_BRTAKEN
2325 ENUMX
2326 BFD_RELOC_PPC_BA16_BRNTAKEN
2327 ENUMX
2328 BFD_RELOC_PPC_COPY
2329 ENUMX
2330 BFD_RELOC_PPC_GLOB_DAT
2331 ENUMX
2332 BFD_RELOC_PPC_JMP_SLOT
2333 ENUMX
2334 BFD_RELOC_PPC_RELATIVE
2335 ENUMX
2336 BFD_RELOC_PPC_LOCAL24PC
2337 ENUMX
2338 BFD_RELOC_PPC_EMB_NADDR32
2339 ENUMX
2340 BFD_RELOC_PPC_EMB_NADDR16
2341 ENUMX
2342 BFD_RELOC_PPC_EMB_NADDR16_LO
2343 ENUMX
2344 BFD_RELOC_PPC_EMB_NADDR16_HI
2345 ENUMX
2346 BFD_RELOC_PPC_EMB_NADDR16_HA
2347 ENUMX
2348 BFD_RELOC_PPC_EMB_SDAI16
2349 ENUMX
2350 BFD_RELOC_PPC_EMB_SDA2I16
2351 ENUMX
2352 BFD_RELOC_PPC_EMB_SDA2REL
2353 ENUMX
2354 BFD_RELOC_PPC_EMB_SDA21
2355 ENUMX
2356 BFD_RELOC_PPC_EMB_MRKREF
2357 ENUMX
2358 BFD_RELOC_PPC_EMB_RELSEC16
2359 ENUMX
2360 BFD_RELOC_PPC_EMB_RELST_LO
2361 ENUMX
2362 BFD_RELOC_PPC_EMB_RELST_HI
2363 ENUMX
2364 BFD_RELOC_PPC_EMB_RELST_HA
2365 ENUMX
2366 BFD_RELOC_PPC_EMB_BIT_FLD
2367 ENUMX
2368 BFD_RELOC_PPC_EMB_RELSDA
2369 ENUMX
2370 BFD_RELOC_PPC64_HIGHER
2371 ENUMX
2372 BFD_RELOC_PPC64_HIGHER_S
2373 ENUMX
2374 BFD_RELOC_PPC64_HIGHEST
2375 ENUMX
2376 BFD_RELOC_PPC64_HIGHEST_S
2377 ENUMX
2378 BFD_RELOC_PPC64_TOC16_LO
2379 ENUMX
2380 BFD_RELOC_PPC64_TOC16_HI
2381 ENUMX
2382 BFD_RELOC_PPC64_TOC16_HA
2383 ENUMX
2384 BFD_RELOC_PPC64_TOC
2385 ENUMX
2386 BFD_RELOC_PPC64_PLTGOT16
2387 ENUMX
2388 BFD_RELOC_PPC64_PLTGOT16_LO
2389 ENUMX
2390 BFD_RELOC_PPC64_PLTGOT16_HI
2391 ENUMX
2392 BFD_RELOC_PPC64_PLTGOT16_HA
2393 ENUMX
2394 BFD_RELOC_PPC64_ADDR16_DS
2395 ENUMX
2396 BFD_RELOC_PPC64_ADDR16_LO_DS
2397 ENUMX
2398 BFD_RELOC_PPC64_GOT16_DS
2399 ENUMX
2400 BFD_RELOC_PPC64_GOT16_LO_DS
2401 ENUMX
2402 BFD_RELOC_PPC64_PLT16_LO_DS
2403 ENUMX
2404 BFD_RELOC_PPC64_SECTOFF_DS
2405 ENUMX
2406 BFD_RELOC_PPC64_SECTOFF_LO_DS
2407 ENUMX
2408 BFD_RELOC_PPC64_TOC16_DS
2409 ENUMX
2410 BFD_RELOC_PPC64_TOC16_LO_DS
2411 ENUMX
2412 BFD_RELOC_PPC64_PLTGOT16_DS
2413 ENUMX
2414 BFD_RELOC_PPC64_PLTGOT16_LO_DS
2415 ENUMDOC
2416 Power(rs6000) and PowerPC relocations.
2417
2418 ENUM
2419 BFD_RELOC_PPC_TLS
2420 ENUMX
2421 BFD_RELOC_PPC_DTPMOD
2422 ENUMX
2423 BFD_RELOC_PPC_TPREL16
2424 ENUMX
2425 BFD_RELOC_PPC_TPREL16_LO
2426 ENUMX
2427 BFD_RELOC_PPC_TPREL16_HI
2428 ENUMX
2429 BFD_RELOC_PPC_TPREL16_HA
2430 ENUMX
2431 BFD_RELOC_PPC_TPREL
2432 ENUMX
2433 BFD_RELOC_PPC_DTPREL16
2434 ENUMX
2435 BFD_RELOC_PPC_DTPREL16_LO
2436 ENUMX
2437 BFD_RELOC_PPC_DTPREL16_HI
2438 ENUMX
2439 BFD_RELOC_PPC_DTPREL16_HA
2440 ENUMX
2441 BFD_RELOC_PPC_DTPREL
2442 ENUMX
2443 BFD_RELOC_PPC_GOT_TLSGD16
2444 ENUMX
2445 BFD_RELOC_PPC_GOT_TLSGD16_LO
2446 ENUMX
2447 BFD_RELOC_PPC_GOT_TLSGD16_HI
2448 ENUMX
2449 BFD_RELOC_PPC_GOT_TLSGD16_HA
2450 ENUMX
2451 BFD_RELOC_PPC_GOT_TLSLD16
2452 ENUMX
2453 BFD_RELOC_PPC_GOT_TLSLD16_LO
2454 ENUMX
2455 BFD_RELOC_PPC_GOT_TLSLD16_HI
2456 ENUMX
2457 BFD_RELOC_PPC_GOT_TLSLD16_HA
2458 ENUMX
2459 BFD_RELOC_PPC_GOT_TPREL16
2460 ENUMX
2461 BFD_RELOC_PPC_GOT_TPREL16_LO
2462 ENUMX
2463 BFD_RELOC_PPC_GOT_TPREL16_HI
2464 ENUMX
2465 BFD_RELOC_PPC_GOT_TPREL16_HA
2466 ENUMX
2467 BFD_RELOC_PPC_GOT_DTPREL16
2468 ENUMX
2469 BFD_RELOC_PPC_GOT_DTPREL16_LO
2470 ENUMX
2471 BFD_RELOC_PPC_GOT_DTPREL16_HI
2472 ENUMX
2473 BFD_RELOC_PPC_GOT_DTPREL16_HA
2474 ENUMX
2475 BFD_RELOC_PPC64_TPREL16_DS
2476 ENUMX
2477 BFD_RELOC_PPC64_TPREL16_LO_DS
2478 ENUMX
2479 BFD_RELOC_PPC64_TPREL16_HIGHER
2480 ENUMX
2481 BFD_RELOC_PPC64_TPREL16_HIGHERA
2482 ENUMX
2483 BFD_RELOC_PPC64_TPREL16_HIGHEST
2484 ENUMX
2485 BFD_RELOC_PPC64_TPREL16_HIGHESTA
2486 ENUMX
2487 BFD_RELOC_PPC64_DTPREL16_DS
2488 ENUMX
2489 BFD_RELOC_PPC64_DTPREL16_LO_DS
2490 ENUMX
2491 BFD_RELOC_PPC64_DTPREL16_HIGHER
2492 ENUMX
2493 BFD_RELOC_PPC64_DTPREL16_HIGHERA
2494 ENUMX
2495 BFD_RELOC_PPC64_DTPREL16_HIGHEST
2496 ENUMX
2497 BFD_RELOC_PPC64_DTPREL16_HIGHESTA
2498 ENUMDOC
2499 PowerPC and PowerPC64 thread-local storage relocations.
2500
2501 ENUM
2502 BFD_RELOC_I370_D12
2503 ENUMDOC
2504 IBM 370/390 relocations
2505
2506 ENUM
2507 BFD_RELOC_CTOR
2508 ENUMDOC
2509 The type of reloc used to build a contructor table - at the moment
2510 probably a 32 bit wide absolute relocation, but the target can choose.
2511 It generally does map to one of the other relocation types.
2512
2513 ENUM
2514 BFD_RELOC_ARM_PCREL_BRANCH
2515 ENUMDOC
2516 ARM 26 bit pc-relative branch. The lowest two bits must be zero and are
2517 not stored in the instruction.
2518 ENUM
2519 BFD_RELOC_ARM_PCREL_BLX
2520 ENUMDOC
2521 ARM 26 bit pc-relative branch. The lowest bit must be zero and is
2522 not stored in the instruction. The 2nd lowest bit comes from a 1 bit
2523 field in the instruction.
2524 ENUM
2525 BFD_RELOC_THUMB_PCREL_BLX
2526 ENUMDOC
2527 Thumb 22 bit pc-relative branch. The lowest bit must be zero and is
2528 not stored in the instruction. The 2nd lowest bit comes from a 1 bit
2529 field in the instruction.
2530 ENUM
2531 BFD_RELOC_ARM_IMMEDIATE
2532 ENUMX
2533 BFD_RELOC_ARM_ADRL_IMMEDIATE
2534 ENUMX
2535 BFD_RELOC_ARM_OFFSET_IMM
2536 ENUMX
2537 BFD_RELOC_ARM_SHIFT_IMM
2538 ENUMX
2539 BFD_RELOC_ARM_SWI
2540 ENUMX
2541 BFD_RELOC_ARM_MULTI
2542 ENUMX
2543 BFD_RELOC_ARM_CP_OFF_IMM
2544 ENUMX
2545 BFD_RELOC_ARM_CP_OFF_IMM_S2
2546 ENUMX
2547 BFD_RELOC_ARM_ADR_IMM
2548 ENUMX
2549 BFD_RELOC_ARM_LDR_IMM
2550 ENUMX
2551 BFD_RELOC_ARM_LITERAL
2552 ENUMX
2553 BFD_RELOC_ARM_IN_POOL
2554 ENUMX
2555 BFD_RELOC_ARM_OFFSET_IMM8
2556 ENUMX
2557 BFD_RELOC_ARM_HWLITERAL
2558 ENUMX
2559 BFD_RELOC_ARM_THUMB_ADD
2560 ENUMX
2561 BFD_RELOC_ARM_THUMB_IMM
2562 ENUMX
2563 BFD_RELOC_ARM_THUMB_SHIFT
2564 ENUMX
2565 BFD_RELOC_ARM_THUMB_OFFSET
2566 ENUMX
2567 BFD_RELOC_ARM_GOT12
2568 ENUMX
2569 BFD_RELOC_ARM_GOT32
2570 ENUMX
2571 BFD_RELOC_ARM_JUMP_SLOT
2572 ENUMX
2573 BFD_RELOC_ARM_COPY
2574 ENUMX
2575 BFD_RELOC_ARM_GLOB_DAT
2576 ENUMX
2577 BFD_RELOC_ARM_PLT32
2578 ENUMX
2579 BFD_RELOC_ARM_RELATIVE
2580 ENUMX
2581 BFD_RELOC_ARM_GOTOFF
2582 ENUMX
2583 BFD_RELOC_ARM_GOTPC
2584 ENUMDOC
2585 These relocs are only used within the ARM assembler. They are not
2586 (at present) written to any object files.
2587
2588 ENUM
2589 BFD_RELOC_SH_PCDISP8BY2
2590 ENUMX
2591 BFD_RELOC_SH_PCDISP12BY2
2592 ENUMX
2593 BFD_RELOC_SH_IMM4
2594 ENUMX
2595 BFD_RELOC_SH_IMM4BY2
2596 ENUMX
2597 BFD_RELOC_SH_IMM4BY4
2598 ENUMX
2599 BFD_RELOC_SH_IMM8
2600 ENUMX
2601 BFD_RELOC_SH_IMM8BY2
2602 ENUMX
2603 BFD_RELOC_SH_IMM8BY4
2604 ENUMX
2605 BFD_RELOC_SH_PCRELIMM8BY2
2606 ENUMX
2607 BFD_RELOC_SH_PCRELIMM8BY4
2608 ENUMX
2609 BFD_RELOC_SH_SWITCH16
2610 ENUMX
2611 BFD_RELOC_SH_SWITCH32
2612 ENUMX
2613 BFD_RELOC_SH_USES
2614 ENUMX
2615 BFD_RELOC_SH_COUNT
2616 ENUMX
2617 BFD_RELOC_SH_ALIGN
2618 ENUMX
2619 BFD_RELOC_SH_CODE
2620 ENUMX
2621 BFD_RELOC_SH_DATA
2622 ENUMX
2623 BFD_RELOC_SH_LABEL
2624 ENUMX
2625 BFD_RELOC_SH_LOOP_START
2626 ENUMX
2627 BFD_RELOC_SH_LOOP_END
2628 ENUMX
2629 BFD_RELOC_SH_COPY
2630 ENUMX
2631 BFD_RELOC_SH_GLOB_DAT
2632 ENUMX
2633 BFD_RELOC_SH_JMP_SLOT
2634 ENUMX
2635 BFD_RELOC_SH_RELATIVE
2636 ENUMX
2637 BFD_RELOC_SH_GOTPC
2638 ENUMX
2639 BFD_RELOC_SH_GOT_LOW16
2640 ENUMX
2641 BFD_RELOC_SH_GOT_MEDLOW16
2642 ENUMX
2643 BFD_RELOC_SH_GOT_MEDHI16
2644 ENUMX
2645 BFD_RELOC_SH_GOT_HI16
2646 ENUMX
2647 BFD_RELOC_SH_GOTPLT_LOW16
2648 ENUMX
2649 BFD_RELOC_SH_GOTPLT_MEDLOW16
2650 ENUMX
2651 BFD_RELOC_SH_GOTPLT_MEDHI16
2652 ENUMX
2653 BFD_RELOC_SH_GOTPLT_HI16
2654 ENUMX
2655 BFD_RELOC_SH_PLT_LOW16
2656 ENUMX
2657 BFD_RELOC_SH_PLT_MEDLOW16
2658 ENUMX
2659 BFD_RELOC_SH_PLT_MEDHI16
2660 ENUMX
2661 BFD_RELOC_SH_PLT_HI16
2662 ENUMX
2663 BFD_RELOC_SH_GOTOFF_LOW16
2664 ENUMX
2665 BFD_RELOC_SH_GOTOFF_MEDLOW16
2666 ENUMX
2667 BFD_RELOC_SH_GOTOFF_MEDHI16
2668 ENUMX
2669 BFD_RELOC_SH_GOTOFF_HI16
2670 ENUMX
2671 BFD_RELOC_SH_GOTPC_LOW16
2672 ENUMX
2673 BFD_RELOC_SH_GOTPC_MEDLOW16
2674 ENUMX
2675 BFD_RELOC_SH_GOTPC_MEDHI16
2676 ENUMX
2677 BFD_RELOC_SH_GOTPC_HI16
2678 ENUMX
2679 BFD_RELOC_SH_COPY64
2680 ENUMX
2681 BFD_RELOC_SH_GLOB_DAT64
2682 ENUMX
2683 BFD_RELOC_SH_JMP_SLOT64
2684 ENUMX
2685 BFD_RELOC_SH_RELATIVE64
2686 ENUMX
2687 BFD_RELOC_SH_GOT10BY4
2688 ENUMX
2689 BFD_RELOC_SH_GOT10BY8
2690 ENUMX
2691 BFD_RELOC_SH_GOTPLT10BY4
2692 ENUMX
2693 BFD_RELOC_SH_GOTPLT10BY8
2694 ENUMX
2695 BFD_RELOC_SH_GOTPLT32
2696 ENUMX
2697 BFD_RELOC_SH_SHMEDIA_CODE
2698 ENUMX
2699 BFD_RELOC_SH_IMMU5
2700 ENUMX
2701 BFD_RELOC_SH_IMMS6
2702 ENUMX
2703 BFD_RELOC_SH_IMMS6BY32
2704 ENUMX
2705 BFD_RELOC_SH_IMMU6
2706 ENUMX
2707 BFD_RELOC_SH_IMMS10
2708 ENUMX
2709 BFD_RELOC_SH_IMMS10BY2
2710 ENUMX
2711 BFD_RELOC_SH_IMMS10BY4
2712 ENUMX
2713 BFD_RELOC_SH_IMMS10BY8
2714 ENUMX
2715 BFD_RELOC_SH_IMMS16
2716 ENUMX
2717 BFD_RELOC_SH_IMMU16
2718 ENUMX
2719 BFD_RELOC_SH_IMM_LOW16
2720 ENUMX
2721 BFD_RELOC_SH_IMM_LOW16_PCREL
2722 ENUMX
2723 BFD_RELOC_SH_IMM_MEDLOW16
2724 ENUMX
2725 BFD_RELOC_SH_IMM_MEDLOW16_PCREL
2726 ENUMX
2727 BFD_RELOC_SH_IMM_MEDHI16
2728 ENUMX
2729 BFD_RELOC_SH_IMM_MEDHI16_PCREL
2730 ENUMX
2731 BFD_RELOC_SH_IMM_HI16
2732 ENUMX
2733 BFD_RELOC_SH_IMM_HI16_PCREL
2734 ENUMX
2735 BFD_RELOC_SH_PT_16
2736 ENUMX
2737 BFD_RELOC_SH_TLS_GD_32
2738 ENUMX
2739 BFD_RELOC_SH_TLS_LD_32
2740 ENUMX
2741 BFD_RELOC_SH_TLS_LDO_32
2742 ENUMX
2743 BFD_RELOC_SH_TLS_IE_32
2744 ENUMX
2745 BFD_RELOC_SH_TLS_LE_32
2746 ENUMX
2747 BFD_RELOC_SH_TLS_DTPMOD32
2748 ENUMX
2749 BFD_RELOC_SH_TLS_DTPOFF32
2750 ENUMX
2751 BFD_RELOC_SH_TLS_TPOFF32
2752 ENUMDOC
2753 Renesas / SuperH SH relocs. Not all of these appear in object files.
2754
2755 ENUM
2756 BFD_RELOC_THUMB_PCREL_BRANCH9
2757 ENUMX
2758 BFD_RELOC_THUMB_PCREL_BRANCH12
2759 ENUMX
2760 BFD_RELOC_THUMB_PCREL_BRANCH23
2761 ENUMDOC
2762 Thumb 23-, 12- and 9-bit pc-relative branches. The lowest bit must
2763 be zero and is not stored in the instruction.
2764
2765 ENUM
2766 BFD_RELOC_ARC_B22_PCREL
2767 ENUMDOC
2768 ARC Cores relocs.
2769 ARC 22 bit pc-relative branch. The lowest two bits must be zero and are
2770 not stored in the instruction. The high 20 bits are installed in bits 26
2771 through 7 of the instruction.
2772 ENUM
2773 BFD_RELOC_ARC_B26
2774 ENUMDOC
2775 ARC 26 bit absolute branch. The lowest two bits must be zero and are not
2776 stored in the instruction. The high 24 bits are installed in bits 23
2777 through 0.
2778
2779 ENUM
2780 BFD_RELOC_D10V_10_PCREL_R
2781 ENUMDOC
2782 Mitsubishi D10V relocs.
2783 This is a 10-bit reloc with the right 2 bits
2784 assumed to be 0.
2785 ENUM
2786 BFD_RELOC_D10V_10_PCREL_L
2787 ENUMDOC
2788 Mitsubishi D10V relocs.
2789 This is a 10-bit reloc with the right 2 bits
2790 assumed to be 0. This is the same as the previous reloc
2791 except it is in the left container, i.e.,
2792 shifted left 15 bits.
2793 ENUM
2794 BFD_RELOC_D10V_18
2795 ENUMDOC
2796 This is an 18-bit reloc with the right 2 bits
2797 assumed to be 0.
2798 ENUM
2799 BFD_RELOC_D10V_18_PCREL
2800 ENUMDOC
2801 This is an 18-bit reloc with the right 2 bits
2802 assumed to be 0.
2803
2804 ENUM
2805 BFD_RELOC_D30V_6
2806 ENUMDOC
2807 Mitsubishi D30V relocs.
2808 This is a 6-bit absolute reloc.
2809 ENUM
2810 BFD_RELOC_D30V_9_PCREL
2811 ENUMDOC
2812 This is a 6-bit pc-relative reloc with
2813 the right 3 bits assumed to be 0.
2814 ENUM
2815 BFD_RELOC_D30V_9_PCREL_R
2816 ENUMDOC
2817 This is a 6-bit pc-relative reloc with
2818 the right 3 bits assumed to be 0. Same
2819 as the previous reloc but on the right side
2820 of the container.
2821 ENUM
2822 BFD_RELOC_D30V_15
2823 ENUMDOC
2824 This is a 12-bit absolute reloc with the
2825 right 3 bitsassumed to be 0.
2826 ENUM
2827 BFD_RELOC_D30V_15_PCREL
2828 ENUMDOC
2829 This is a 12-bit pc-relative reloc with
2830 the right 3 bits assumed to be 0.
2831 ENUM
2832 BFD_RELOC_D30V_15_PCREL_R
2833 ENUMDOC
2834 This is a 12-bit pc-relative reloc with
2835 the right 3 bits assumed to be 0. Same
2836 as the previous reloc but on the right side
2837 of the container.
2838 ENUM
2839 BFD_RELOC_D30V_21
2840 ENUMDOC
2841 This is an 18-bit absolute reloc with
2842 the right 3 bits assumed to be 0.
2843 ENUM
2844 BFD_RELOC_D30V_21_PCREL
2845 ENUMDOC
2846 This is an 18-bit pc-relative reloc with
2847 the right 3 bits assumed to be 0.
2848 ENUM
2849 BFD_RELOC_D30V_21_PCREL_R
2850 ENUMDOC
2851 This is an 18-bit pc-relative reloc with
2852 the right 3 bits assumed to be 0. Same
2853 as the previous reloc but on the right side
2854 of the container.
2855 ENUM
2856 BFD_RELOC_D30V_32
2857 ENUMDOC
2858 This is a 32-bit absolute reloc.
2859 ENUM
2860 BFD_RELOC_D30V_32_PCREL
2861 ENUMDOC
2862 This is a 32-bit pc-relative reloc.
2863
2864 ENUM
2865 BFD_RELOC_DLX_HI16_S
2866 ENUMDOC
2867 DLX relocs
2868 ENUM
2869 BFD_RELOC_DLX_LO16
2870 ENUMDOC
2871 DLX relocs
2872 ENUM
2873 BFD_RELOC_DLX_JMP26
2874 ENUMDOC
2875 DLX relocs
2876
2877 ENUM
2878 BFD_RELOC_M32R_24
2879 ENUMDOC
2880 Renesas M32R (formerly Mitsubishi M32R) relocs.
2881 This is a 24 bit absolute address.
2882 ENUM
2883 BFD_RELOC_M32R_10_PCREL
2884 ENUMDOC
2885 This is a 10-bit pc-relative reloc with the right 2 bits assumed to be 0.
2886 ENUM
2887 BFD_RELOC_M32R_18_PCREL
2888 ENUMDOC
2889 This is an 18-bit reloc with the right 2 bits assumed to be 0.
2890 ENUM
2891 BFD_RELOC_M32R_26_PCREL
2892 ENUMDOC
2893 This is a 26-bit reloc with the right 2 bits assumed to be 0.
2894 ENUM
2895 BFD_RELOC_M32R_HI16_ULO
2896 ENUMDOC
2897 This is a 16-bit reloc containing the high 16 bits of an address
2898 used when the lower 16 bits are treated as unsigned.
2899 ENUM
2900 BFD_RELOC_M32R_HI16_SLO
2901 ENUMDOC
2902 This is a 16-bit reloc containing the high 16 bits of an address
2903 used when the lower 16 bits are treated as signed.
2904 ENUM
2905 BFD_RELOC_M32R_LO16
2906 ENUMDOC
2907 This is a 16-bit reloc containing the lower 16 bits of an address.
2908 ENUM
2909 BFD_RELOC_M32R_SDA16
2910 ENUMDOC
2911 This is a 16-bit reloc containing the small data area offset for use in
2912 add3, load, and store instructions.
2913
2914 ENUM
2915 BFD_RELOC_V850_9_PCREL
2916 ENUMDOC
2917 This is a 9-bit reloc
2918 ENUM
2919 BFD_RELOC_V850_22_PCREL
2920 ENUMDOC
2921 This is a 22-bit reloc
2922
2923 ENUM
2924 BFD_RELOC_V850_SDA_16_16_OFFSET
2925 ENUMDOC
2926 This is a 16 bit offset from the short data area pointer.
2927 ENUM
2928 BFD_RELOC_V850_SDA_15_16_OFFSET
2929 ENUMDOC
2930 This is a 16 bit offset (of which only 15 bits are used) from the
2931 short data area pointer.
2932 ENUM
2933 BFD_RELOC_V850_ZDA_16_16_OFFSET
2934 ENUMDOC
2935 This is a 16 bit offset from the zero data area pointer.
2936 ENUM
2937 BFD_RELOC_V850_ZDA_15_16_OFFSET
2938 ENUMDOC
2939 This is a 16 bit offset (of which only 15 bits are used) from the
2940 zero data area pointer.
2941 ENUM
2942 BFD_RELOC_V850_TDA_6_8_OFFSET
2943 ENUMDOC
2944 This is an 8 bit offset (of which only 6 bits are used) from the
2945 tiny data area pointer.
2946 ENUM
2947 BFD_RELOC_V850_TDA_7_8_OFFSET
2948 ENUMDOC
2949 This is an 8bit offset (of which only 7 bits are used) from the tiny
2950 data area pointer.
2951 ENUM
2952 BFD_RELOC_V850_TDA_7_7_OFFSET
2953 ENUMDOC
2954 This is a 7 bit offset from the tiny data area pointer.
2955 ENUM
2956 BFD_RELOC_V850_TDA_16_16_OFFSET
2957 ENUMDOC
2958 This is a 16 bit offset from the tiny data area pointer.
2959 COMMENT
2960 ENUM
2961 BFD_RELOC_V850_TDA_4_5_OFFSET
2962 ENUMDOC
2963 This is a 5 bit offset (of which only 4 bits are used) from the tiny
2964 data area pointer.
2965 ENUM
2966 BFD_RELOC_V850_TDA_4_4_OFFSET
2967 ENUMDOC
2968 This is a 4 bit offset from the tiny data area pointer.
2969 ENUM
2970 BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
2971 ENUMDOC
2972 This is a 16 bit offset from the short data area pointer, with the
2973 bits placed non-contigously in the instruction.
2974 ENUM
2975 BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
2976 ENUMDOC
2977 This is a 16 bit offset from the zero data area pointer, with the
2978 bits placed non-contigously in the instruction.
2979 ENUM
2980 BFD_RELOC_V850_CALLT_6_7_OFFSET
2981 ENUMDOC
2982 This is a 6 bit offset from the call table base pointer.
2983 ENUM
2984 BFD_RELOC_V850_CALLT_16_16_OFFSET
2985 ENUMDOC
2986 This is a 16 bit offset from the call table base pointer.
2987 ENUM
2988 BFD_RELOC_V850_LONGCALL
2989 ENUMDOC
2990 Used for relaxing indirect function calls.
2991 ENUM
2992 BFD_RELOC_V850_LONGJUMP
2993 ENUMDOC
2994 Used for relaxing indirect jumps.
2995 ENUM
2996 BFD_RELOC_V850_ALIGN
2997 ENUMDOC
2998 Used to maintain alignment whilst relaxing.
2999 ENUM
3000 BFD_RELOC_MN10300_32_PCREL
3001 ENUMDOC
3002 This is a 32bit pcrel reloc for the mn10300, offset by two bytes in the
3003 instruction.
3004 ENUM
3005 BFD_RELOC_MN10300_16_PCREL
3006 ENUMDOC
3007 This is a 16bit pcrel reloc for the mn10300, offset by two bytes in the
3008 instruction.
3009
3010 ENUM
3011 BFD_RELOC_TIC30_LDP
3012 ENUMDOC
3013 This is a 8bit DP reloc for the tms320c30, where the most
3014 significant 8 bits of a 24 bit word are placed into the least
3015 significant 8 bits of the opcode.
3016
3017 ENUM
3018 BFD_RELOC_TIC54X_PARTLS7
3019 ENUMDOC
3020 This is a 7bit reloc for the tms320c54x, where the least
3021 significant 7 bits of a 16 bit word are placed into the least
3022 significant 7 bits of the opcode.
3023
3024 ENUM
3025 BFD_RELOC_TIC54X_PARTMS9
3026 ENUMDOC
3027 This is a 9bit DP reloc for the tms320c54x, where the most
3028 significant 9 bits of a 16 bit word are placed into the least
3029 significant 9 bits of the opcode.
3030
3031 ENUM
3032 BFD_RELOC_TIC54X_23
3033 ENUMDOC
3034 This is an extended address 23-bit reloc for the tms320c54x.
3035
3036 ENUM
3037 BFD_RELOC_TIC54X_16_OF_23
3038 ENUMDOC
3039 This is a 16-bit reloc for the tms320c54x, where the least
3040 significant 16 bits of a 23-bit extended address are placed into
3041 the opcode.
3042
3043 ENUM
3044 BFD_RELOC_TIC54X_MS7_OF_23
3045 ENUMDOC
3046 This is a reloc for the tms320c54x, where the most
3047 significant 7 bits of a 23-bit extended address are placed into
3048 the opcode.
3049
3050 ENUM
3051 BFD_RELOC_FR30_48
3052 ENUMDOC
3053 This is a 48 bit reloc for the FR30 that stores 32 bits.
3054 ENUM
3055 BFD_RELOC_FR30_20
3056 ENUMDOC
3057 This is a 32 bit reloc for the FR30 that stores 20 bits split up into
3058 two sections.
3059 ENUM
3060 BFD_RELOC_FR30_6_IN_4
3061 ENUMDOC
3062 This is a 16 bit reloc for the FR30 that stores a 6 bit word offset in
3063 4 bits.
3064 ENUM
3065 BFD_RELOC_FR30_8_IN_8
3066 ENUMDOC
3067 This is a 16 bit reloc for the FR30 that stores an 8 bit byte offset
3068 into 8 bits.
3069 ENUM
3070 BFD_RELOC_FR30_9_IN_8
3071 ENUMDOC
3072 This is a 16 bit reloc for the FR30 that stores a 9 bit short offset
3073 into 8 bits.
3074 ENUM
3075 BFD_RELOC_FR30_10_IN_8
3076 ENUMDOC
3077 This is a 16 bit reloc for the FR30 that stores a 10 bit word offset
3078 into 8 bits.
3079 ENUM
3080 BFD_RELOC_FR30_9_PCREL
3081 ENUMDOC
3082 This is a 16 bit reloc for the FR30 that stores a 9 bit pc relative
3083 short offset into 8 bits.
3084 ENUM
3085 BFD_RELOC_FR30_12_PCREL
3086 ENUMDOC
3087 This is a 16 bit reloc for the FR30 that stores a 12 bit pc relative
3088 short offset into 11 bits.
3089
3090 ENUM
3091 BFD_RELOC_MCORE_PCREL_IMM8BY4
3092 ENUMX
3093 BFD_RELOC_MCORE_PCREL_IMM11BY2
3094 ENUMX
3095 BFD_RELOC_MCORE_PCREL_IMM4BY2
3096 ENUMX
3097 BFD_RELOC_MCORE_PCREL_32
3098 ENUMX
3099 BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2
3100 ENUMX
3101 BFD_RELOC_MCORE_RVA
3102 ENUMDOC
3103 Motorola Mcore relocations.
3104
3105 ENUM
3106 BFD_RELOC_MMIX_GETA
3107 ENUMX
3108 BFD_RELOC_MMIX_GETA_1
3109 ENUMX
3110 BFD_RELOC_MMIX_GETA_2
3111 ENUMX
3112 BFD_RELOC_MMIX_GETA_3
3113 ENUMDOC
3114 These are relocations for the GETA instruction.
3115 ENUM
3116 BFD_RELOC_MMIX_CBRANCH
3117 ENUMX
3118 BFD_RELOC_MMIX_CBRANCH_J
3119 ENUMX
3120 BFD_RELOC_MMIX_CBRANCH_1
3121 ENUMX
3122 BFD_RELOC_MMIX_CBRANCH_2
3123 ENUMX
3124 BFD_RELOC_MMIX_CBRANCH_3
3125 ENUMDOC
3126 These are relocations for a conditional branch instruction.
3127 ENUM
3128 BFD_RELOC_MMIX_PUSHJ
3129 ENUMX
3130 BFD_RELOC_MMIX_PUSHJ_1
3131 ENUMX
3132 BFD_RELOC_MMIX_PUSHJ_2
3133 ENUMX
3134 BFD_RELOC_MMIX_PUSHJ_3
3135 ENUMDOC
3136 These are relocations for the PUSHJ instruction.
3137 ENUM
3138 BFD_RELOC_MMIX_JMP
3139 ENUMX
3140 BFD_RELOC_MMIX_JMP_1
3141 ENUMX
3142 BFD_RELOC_MMIX_JMP_2
3143 ENUMX
3144 BFD_RELOC_MMIX_JMP_3
3145 ENUMDOC
3146 These are relocations for the JMP instruction.
3147 ENUM
3148 BFD_RELOC_MMIX_ADDR19
3149 ENUMDOC
3150 This is a relocation for a relative address as in a GETA instruction or
3151 a branch.
3152 ENUM
3153 BFD_RELOC_MMIX_ADDR27
3154 ENUMDOC
3155 This is a relocation for a relative address as in a JMP instruction.
3156 ENUM
3157 BFD_RELOC_MMIX_REG_OR_BYTE
3158 ENUMDOC
3159 This is a relocation for an instruction field that may be a general
3160 register or a value 0..255.
3161 ENUM
3162 BFD_RELOC_MMIX_REG
3163 ENUMDOC
3164 This is a relocation for an instruction field that may be a general
3165 register.
3166 ENUM
3167 BFD_RELOC_MMIX_BASE_PLUS_OFFSET
3168 ENUMDOC
3169 This is a relocation for two instruction fields holding a register and
3170 an offset, the equivalent of the relocation.
3171 ENUM
3172 BFD_RELOC_MMIX_LOCAL
3173 ENUMDOC
3174 This relocation is an assertion that the expression is not allocated as
3175 a global register. It does not modify contents.
3176
3177 ENUM
3178 BFD_RELOC_AVR_7_PCREL
3179 ENUMDOC
3180 This is a 16 bit reloc for the AVR that stores 8 bit pc relative
3181 short offset into 7 bits.
3182 ENUM
3183 BFD_RELOC_AVR_13_PCREL
3184 ENUMDOC
3185 This is a 16 bit reloc for the AVR that stores 13 bit pc relative
3186 short offset into 12 bits.
3187 ENUM
3188 BFD_RELOC_AVR_16_PM
3189 ENUMDOC
3190 This is a 16 bit reloc for the AVR that stores 17 bit value (usually
3191 program memory address) into 16 bits.
3192 ENUM
3193 BFD_RELOC_AVR_LO8_LDI
3194 ENUMDOC
3195 This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3196 data memory address) into 8 bit immediate value of LDI insn.
3197 ENUM
3198 BFD_RELOC_AVR_HI8_LDI
3199 ENUMDOC
3200 This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3201 of data memory address) into 8 bit immediate value of LDI insn.
3202 ENUM
3203 BFD_RELOC_AVR_HH8_LDI
3204 ENUMDOC
3205 This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3206 of program memory address) into 8 bit immediate value of LDI insn.
3207 ENUM
3208 BFD_RELOC_AVR_LO8_LDI_NEG
3209 ENUMDOC
3210 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3211 (usually data memory address) into 8 bit immediate value of SUBI insn.
3212 ENUM
3213 BFD_RELOC_AVR_HI8_LDI_NEG
3214 ENUMDOC
3215 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3216 (high 8 bit of data memory address) into 8 bit immediate value of
3217 SUBI insn.
3218 ENUM
3219 BFD_RELOC_AVR_HH8_LDI_NEG
3220 ENUMDOC
3221 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3222 (most high 8 bit of program memory address) into 8 bit immediate value
3223 of LDI or SUBI insn.
3224 ENUM
3225 BFD_RELOC_AVR_LO8_LDI_PM
3226 ENUMDOC
3227 This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3228 command address) into 8 bit immediate value of LDI insn.
3229 ENUM
3230 BFD_RELOC_AVR_HI8_LDI_PM
3231 ENUMDOC
3232 This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3233 of command address) into 8 bit immediate value of LDI insn.
3234 ENUM
3235 BFD_RELOC_AVR_HH8_LDI_PM
3236 ENUMDOC
3237 This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3238 of command address) into 8 bit immediate value of LDI insn.
3239 ENUM
3240 BFD_RELOC_AVR_LO8_LDI_PM_NEG
3241 ENUMDOC
3242 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3243 (usually command address) into 8 bit immediate value of SUBI insn.
3244 ENUM
3245 BFD_RELOC_AVR_HI8_LDI_PM_NEG
3246 ENUMDOC
3247 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3248 (high 8 bit of 16 bit command address) into 8 bit immediate value
3249 of SUBI insn.
3250 ENUM
3251 BFD_RELOC_AVR_HH8_LDI_PM_NEG
3252 ENUMDOC
3253 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3254 (high 6 bit of 22 bit command address) into 8 bit immediate
3255 value of SUBI insn.
3256 ENUM
3257 BFD_RELOC_AVR_CALL
3258 ENUMDOC
3259 This is a 32 bit reloc for the AVR that stores 23 bit value
3260 into 22 bits.
3261
3262 ENUM
3263 BFD_RELOC_390_12
3264 ENUMDOC
3265 Direct 12 bit.
3266 ENUM
3267 BFD_RELOC_390_GOT12
3268 ENUMDOC
3269 12 bit GOT offset.
3270 ENUM
3271 BFD_RELOC_390_PLT32
3272 ENUMDOC
3273 32 bit PC relative PLT address.
3274 ENUM
3275 BFD_RELOC_390_COPY
3276 ENUMDOC
3277 Copy symbol at runtime.
3278 ENUM
3279 BFD_RELOC_390_GLOB_DAT
3280 ENUMDOC
3281 Create GOT entry.
3282 ENUM
3283 BFD_RELOC_390_JMP_SLOT
3284 ENUMDOC
3285 Create PLT entry.
3286 ENUM
3287 BFD_RELOC_390_RELATIVE
3288 ENUMDOC
3289 Adjust by program base.
3290 ENUM
3291 BFD_RELOC_390_GOTPC
3292 ENUMDOC
3293 32 bit PC relative offset to GOT.
3294 ENUM
3295 BFD_RELOC_390_GOT16
3296 ENUMDOC
3297 16 bit GOT offset.
3298 ENUM
3299 BFD_RELOC_390_PC16DBL
3300 ENUMDOC
3301 PC relative 16 bit shifted by 1.
3302 ENUM
3303 BFD_RELOC_390_PLT16DBL
3304 ENUMDOC
3305 16 bit PC rel. PLT shifted by 1.
3306 ENUM
3307 BFD_RELOC_390_PC32DBL
3308 ENUMDOC
3309 PC relative 32 bit shifted by 1.
3310 ENUM
3311 BFD_RELOC_390_PLT32DBL
3312 ENUMDOC
3313 32 bit PC rel. PLT shifted by 1.
3314 ENUM
3315 BFD_RELOC_390_GOTPCDBL
3316 ENUMDOC
3317 32 bit PC rel. GOT shifted by 1.
3318 ENUM
3319 BFD_RELOC_390_GOT64
3320 ENUMDOC
3321 64 bit GOT offset.
3322 ENUM
3323 BFD_RELOC_390_PLT64
3324 ENUMDOC
3325 64 bit PC relative PLT address.
3326 ENUM
3327 BFD_RELOC_390_GOTENT
3328 ENUMDOC
3329 32 bit rel. offset to GOT entry.
3330 ENUM
3331 BFD_RELOC_390_GOTOFF64
3332 ENUMDOC
3333 64 bit offset to GOT.
3334 ENUM
3335 BFD_RELOC_390_GOTPLT12
3336 ENUMDOC
3337 12-bit offset to symbol-entry within GOT, with PLT handling.
3338 ENUM
3339 BFD_RELOC_390_GOTPLT16
3340 ENUMDOC
3341 16-bit offset to symbol-entry within GOT, with PLT handling.
3342 ENUM
3343 BFD_RELOC_390_GOTPLT32
3344 ENUMDOC
3345 32-bit offset to symbol-entry within GOT, with PLT handling.
3346 ENUM
3347 BFD_RELOC_390_GOTPLT64
3348 ENUMDOC
3349 64-bit offset to symbol-entry within GOT, with PLT handling.
3350 ENUM
3351 BFD_RELOC_390_GOTPLTENT
3352 ENUMDOC
3353 32-bit rel. offset to symbol-entry within GOT, with PLT handling.
3354 ENUM
3355 BFD_RELOC_390_PLTOFF16
3356 ENUMDOC
3357 16-bit rel. offset from the GOT to a PLT entry.
3358 ENUM
3359 BFD_RELOC_390_PLTOFF32
3360 ENUMDOC
3361 32-bit rel. offset from the GOT to a PLT entry.
3362 ENUM
3363 BFD_RELOC_390_PLTOFF64
3364 ENUMDOC
3365 64-bit rel. offset from the GOT to a PLT entry.
3366
3367 ENUM
3368 BFD_RELOC_390_TLS_LOAD
3369 ENUMX
3370 BFD_RELOC_390_TLS_GDCALL
3371 ENUMX
3372 BFD_RELOC_390_TLS_LDCALL
3373 ENUMX
3374 BFD_RELOC_390_TLS_GD32
3375 ENUMX
3376 BFD_RELOC_390_TLS_GD64
3377 ENUMX
3378 BFD_RELOC_390_TLS_GOTIE12
3379 ENUMX
3380 BFD_RELOC_390_TLS_GOTIE32
3381 ENUMX
3382 BFD_RELOC_390_TLS_GOTIE64
3383 ENUMX
3384 BFD_RELOC_390_TLS_LDM32
3385 ENUMX
3386 BFD_RELOC_390_TLS_LDM64
3387 ENUMX
3388 BFD_RELOC_390_TLS_IE32
3389 ENUMX
3390 BFD_RELOC_390_TLS_IE64
3391 ENUMX
3392 BFD_RELOC_390_TLS_IEENT
3393 ENUMX
3394 BFD_RELOC_390_TLS_LE32
3395 ENUMX
3396 BFD_RELOC_390_TLS_LE64
3397 ENUMX
3398 BFD_RELOC_390_TLS_LDO32
3399 ENUMX
3400 BFD_RELOC_390_TLS_LDO64
3401 ENUMX
3402 BFD_RELOC_390_TLS_DTPMOD
3403 ENUMX
3404 BFD_RELOC_390_TLS_DTPOFF
3405 ENUMX
3406 BFD_RELOC_390_TLS_TPOFF
3407 ENUMDOC
3408 s390 tls relocations.
3409
3410 ENUM
3411 BFD_RELOC_390_20
3412 ENUMX
3413 BFD_RELOC_390_GOT20
3414 ENUMX
3415 BFD_RELOC_390_GOTPLT20
3416 ENUMX
3417 BFD_RELOC_390_TLS_GOTIE20
3418 ENUMDOC
3419 Long displacement extension.
3420
3421 ENUM
3422 BFD_RELOC_IP2K_FR9
3423 ENUMDOC
3424 Scenix IP2K - 9-bit register number / data address
3425 ENUM
3426 BFD_RELOC_IP2K_BANK
3427 ENUMDOC
3428 Scenix IP2K - 4-bit register/data bank number
3429 ENUM
3430 BFD_RELOC_IP2K_ADDR16CJP
3431 ENUMDOC
3432 Scenix IP2K - low 13 bits of instruction word address
3433 ENUM
3434 BFD_RELOC_IP2K_PAGE3
3435 ENUMDOC
3436 Scenix IP2K - high 3 bits of instruction word address
3437 ENUM
3438 BFD_RELOC_IP2K_LO8DATA
3439 ENUMX
3440 BFD_RELOC_IP2K_HI8DATA
3441 ENUMX
3442 BFD_RELOC_IP2K_EX8DATA
3443 ENUMDOC
3444 Scenix IP2K - ext/low/high 8 bits of data address
3445 ENUM
3446 BFD_RELOC_IP2K_LO8INSN
3447 ENUMX
3448 BFD_RELOC_IP2K_HI8INSN
3449 ENUMDOC
3450 Scenix IP2K - low/high 8 bits of instruction word address
3451 ENUM
3452 BFD_RELOC_IP2K_PC_SKIP
3453 ENUMDOC
3454 Scenix IP2K - even/odd PC modifier to modify snb pcl.0
3455 ENUM
3456 BFD_RELOC_IP2K_TEXT
3457 ENUMDOC
3458 Scenix IP2K - 16 bit word address in text section.
3459 ENUM
3460 BFD_RELOC_IP2K_FR_OFFSET
3461 ENUMDOC
3462 Scenix IP2K - 7-bit sp or dp offset
3463 ENUM
3464 BFD_RELOC_VPE4KMATH_DATA
3465 ENUMX
3466 BFD_RELOC_VPE4KMATH_INSN
3467 ENUMDOC
3468 Scenix VPE4K coprocessor - data/insn-space addressing
3469
3470 ENUM
3471 BFD_RELOC_VTABLE_INHERIT
3472 ENUMX
3473 BFD_RELOC_VTABLE_ENTRY
3474 ENUMDOC
3475 These two relocations are used by the linker to determine which of
3476 the entries in a C++ virtual function table are actually used. When
3477 the --gc-sections option is given, the linker will zero out the entries
3478 that are not used, so that the code for those functions need not be
3479 included in the output.
3480
3481 VTABLE_INHERIT is a zero-space relocation used to describe to the
3482 linker the inheritence tree of a C++ virtual function table. The
3483 relocation's symbol should be the parent class' vtable, and the
3484 relocation should be located at the child vtable.
3485
3486 VTABLE_ENTRY is a zero-space relocation that describes the use of a
3487 virtual function table entry. The reloc's symbol should refer to the
3488 table of the class mentioned in the code. Off of that base, an offset
3489 describes the entry that is being used. For Rela hosts, this offset
3490 is stored in the reloc's addend. For Rel hosts, we are forced to put
3491 this offset in the reloc's section offset.
3492
3493 ENUM
3494 BFD_RELOC_IA64_IMM14
3495 ENUMX
3496 BFD_RELOC_IA64_IMM22
3497 ENUMX
3498 BFD_RELOC_IA64_IMM64
3499 ENUMX
3500 BFD_RELOC_IA64_DIR32MSB
3501 ENUMX
3502 BFD_RELOC_IA64_DIR32LSB
3503 ENUMX
3504 BFD_RELOC_IA64_DIR64MSB
3505 ENUMX
3506 BFD_RELOC_IA64_DIR64LSB
3507 ENUMX
3508 BFD_RELOC_IA64_GPREL22
3509 ENUMX
3510 BFD_RELOC_IA64_GPREL64I
3511 ENUMX
3512 BFD_RELOC_IA64_GPREL32MSB
3513 ENUMX
3514 BFD_RELOC_IA64_GPREL32LSB
3515 ENUMX
3516 BFD_RELOC_IA64_GPREL64MSB
3517 ENUMX
3518 BFD_RELOC_IA64_GPREL64LSB
3519 ENUMX
3520 BFD_RELOC_IA64_LTOFF22
3521 ENUMX
3522 BFD_RELOC_IA64_LTOFF64I
3523 ENUMX
3524 BFD_RELOC_IA64_PLTOFF22
3525 ENUMX
3526 BFD_RELOC_IA64_PLTOFF64I
3527 ENUMX
3528 BFD_RELOC_IA64_PLTOFF64MSB
3529 ENUMX
3530 BFD_RELOC_IA64_PLTOFF64LSB
3531 ENUMX
3532 BFD_RELOC_IA64_FPTR64I
3533 ENUMX
3534 BFD_RELOC_IA64_FPTR32MSB
3535 ENUMX
3536 BFD_RELOC_IA64_FPTR32LSB
3537 ENUMX
3538 BFD_RELOC_IA64_FPTR64MSB
3539 ENUMX
3540 BFD_RELOC_IA64_FPTR64LSB
3541 ENUMX
3542 BFD_RELOC_IA64_PCREL21B
3543 ENUMX
3544 BFD_RELOC_IA64_PCREL21BI
3545 ENUMX
3546 BFD_RELOC_IA64_PCREL21M
3547 ENUMX
3548 BFD_RELOC_IA64_PCREL21F
3549 ENUMX
3550 BFD_RELOC_IA64_PCREL22
3551 ENUMX
3552 BFD_RELOC_IA64_PCREL60B
3553 ENUMX
3554 BFD_RELOC_IA64_PCREL64I
3555 ENUMX
3556 BFD_RELOC_IA64_PCREL32MSB
3557 ENUMX
3558 BFD_RELOC_IA64_PCREL32LSB
3559 ENUMX
3560 BFD_RELOC_IA64_PCREL64MSB
3561 ENUMX
3562 BFD_RELOC_IA64_PCREL64LSB
3563 ENUMX
3564 BFD_RELOC_IA64_LTOFF_FPTR22
3565 ENUMX
3566 BFD_RELOC_IA64_LTOFF_FPTR64I
3567 ENUMX
3568 BFD_RELOC_IA64_LTOFF_FPTR32MSB
3569 ENUMX
3570 BFD_RELOC_IA64_LTOFF_FPTR32LSB
3571 ENUMX
3572 BFD_RELOC_IA64_LTOFF_FPTR64MSB
3573 ENUMX
3574 BFD_RELOC_IA64_LTOFF_FPTR64LSB
3575 ENUMX
3576 BFD_RELOC_IA64_SEGREL32MSB
3577 ENUMX
3578 BFD_RELOC_IA64_SEGREL32LSB
3579 ENUMX
3580 BFD_RELOC_IA64_SEGREL64MSB
3581 ENUMX
3582 BFD_RELOC_IA64_SEGREL64LSB
3583 ENUMX
3584 BFD_RELOC_IA64_SECREL32MSB
3585 ENUMX
3586 BFD_RELOC_IA64_SECREL32LSB
3587 ENUMX
3588 BFD_RELOC_IA64_SECREL64MSB
3589 ENUMX
3590 BFD_RELOC_IA64_SECREL64LSB
3591 ENUMX
3592 BFD_RELOC_IA64_REL32MSB
3593 ENUMX
3594 BFD_RELOC_IA64_REL32LSB
3595 ENUMX
3596 BFD_RELOC_IA64_REL64MSB
3597 ENUMX
3598 BFD_RELOC_IA64_REL64LSB
3599 ENUMX
3600 BFD_RELOC_IA64_LTV32MSB
3601 ENUMX
3602 BFD_RELOC_IA64_LTV32LSB
3603 ENUMX
3604 BFD_RELOC_IA64_LTV64MSB
3605 ENUMX
3606 BFD_RELOC_IA64_LTV64LSB
3607 ENUMX
3608 BFD_RELOC_IA64_IPLTMSB
3609 ENUMX
3610 BFD_RELOC_IA64_IPLTLSB
3611 ENUMX
3612 BFD_RELOC_IA64_COPY
3613 ENUMX
3614 BFD_RELOC_IA64_LTOFF22X
3615 ENUMX
3616 BFD_RELOC_IA64_LDXMOV
3617 ENUMX
3618 BFD_RELOC_IA64_TPREL14
3619 ENUMX
3620 BFD_RELOC_IA64_TPREL22
3621 ENUMX
3622 BFD_RELOC_IA64_TPREL64I
3623 ENUMX
3624 BFD_RELOC_IA64_TPREL64MSB
3625 ENUMX
3626 BFD_RELOC_IA64_TPREL64LSB
3627 ENUMX
3628 BFD_RELOC_IA64_LTOFF_TPREL22
3629 ENUMX
3630 BFD_RELOC_IA64_DTPMOD64MSB
3631 ENUMX
3632 BFD_RELOC_IA64_DTPMOD64LSB
3633 ENUMX
3634 BFD_RELOC_IA64_LTOFF_DTPMOD22
3635 ENUMX
3636 BFD_RELOC_IA64_DTPREL14
3637 ENUMX
3638 BFD_RELOC_IA64_DTPREL22
3639 ENUMX
3640 BFD_RELOC_IA64_DTPREL64I
3641 ENUMX
3642 BFD_RELOC_IA64_DTPREL32MSB
3643 ENUMX
3644 BFD_RELOC_IA64_DTPREL32LSB
3645 ENUMX
3646 BFD_RELOC_IA64_DTPREL64MSB
3647 ENUMX
3648 BFD_RELOC_IA64_DTPREL64LSB
3649 ENUMX
3650 BFD_RELOC_IA64_LTOFF_DTPREL22
3651 ENUMDOC
3652 Intel IA64 Relocations.
3653
3654 ENUM
3655 BFD_RELOC_M68HC11_HI8
3656 ENUMDOC
3657 Motorola 68HC11 reloc.
3658 This is the 8 bit high part of an absolute address.
3659 ENUM
3660 BFD_RELOC_M68HC11_LO8
3661 ENUMDOC
3662 Motorola 68HC11 reloc.
3663 This is the 8 bit low part of an absolute address.
3664 ENUM
3665 BFD_RELOC_M68HC11_3B
3666 ENUMDOC
3667 Motorola 68HC11 reloc.
3668 This is the 3 bit of a value.
3669 ENUM
3670 BFD_RELOC_M68HC11_RL_JUMP
3671 ENUMDOC
3672 Motorola 68HC11 reloc.
3673 This reloc marks the beginning of a jump/call instruction.
3674 It is used for linker relaxation to correctly identify beginning
3675 of instruction and change some branchs to use PC-relative
3676 addressing mode.
3677 ENUM
3678 BFD_RELOC_M68HC11_RL_GROUP
3679 ENUMDOC
3680 Motorola 68HC11 reloc.
3681 This reloc marks a group of several instructions that gcc generates
3682 and for which the linker relaxation pass can modify and/or remove
3683 some of them.
3684 ENUM
3685 BFD_RELOC_M68HC11_LO16
3686 ENUMDOC
3687 Motorola 68HC11 reloc.
3688 This is the 16-bit lower part of an address. It is used for 'call'
3689 instruction to specify the symbol address without any special
3690 transformation (due to memory bank window).
3691 ENUM
3692 BFD_RELOC_M68HC11_PAGE
3693 ENUMDOC
3694 Motorola 68HC11 reloc.
3695 This is a 8-bit reloc that specifies the page number of an address.
3696 It is used by 'call' instruction to specify the page number of
3697 the symbol.
3698 ENUM
3699 BFD_RELOC_M68HC11_24
3700 ENUMDOC
3701 Motorola 68HC11 reloc.
3702 This is a 24-bit reloc that represents the address with a 16-bit
3703 value and a 8-bit page number. The symbol address is transformed
3704 to follow the 16K memory bank of 68HC12 (seen as mapped in the window).
3705
3706 ENUM
3707 BFD_RELOC_CRIS_BDISP8
3708 ENUMX
3709 BFD_RELOC_CRIS_UNSIGNED_5
3710 ENUMX
3711 BFD_RELOC_CRIS_SIGNED_6
3712 ENUMX
3713 BFD_RELOC_CRIS_UNSIGNED_6
3714 ENUMX
3715 BFD_RELOC_CRIS_UNSIGNED_4
3716 ENUMDOC
3717 These relocs are only used within the CRIS assembler. They are not
3718 (at present) written to any object files.
3719 ENUM
3720 BFD_RELOC_CRIS_COPY
3721 ENUMX
3722 BFD_RELOC_CRIS_GLOB_DAT
3723 ENUMX
3724 BFD_RELOC_CRIS_JUMP_SLOT
3725 ENUMX
3726 BFD_RELOC_CRIS_RELATIVE
3727 ENUMDOC
3728 Relocs used in ELF shared libraries for CRIS.
3729 ENUM
3730 BFD_RELOC_CRIS_32_GOT
3731 ENUMDOC
3732 32-bit offset to symbol-entry within GOT.
3733 ENUM
3734 BFD_RELOC_CRIS_16_GOT
3735 ENUMDOC
3736 16-bit offset to symbol-entry within GOT.
3737 ENUM
3738 BFD_RELOC_CRIS_32_GOTPLT
3739 ENUMDOC
3740 32-bit offset to symbol-entry within GOT, with PLT handling.
3741 ENUM
3742 BFD_RELOC_CRIS_16_GOTPLT
3743 ENUMDOC
3744 16-bit offset to symbol-entry within GOT, with PLT handling.
3745 ENUM
3746 BFD_RELOC_CRIS_32_GOTREL
3747 ENUMDOC
3748 32-bit offset to symbol, relative to GOT.
3749 ENUM
3750 BFD_RELOC_CRIS_32_PLT_GOTREL
3751 ENUMDOC
3752 32-bit offset to symbol with PLT entry, relative to GOT.
3753 ENUM
3754 BFD_RELOC_CRIS_32_PLT_PCREL
3755 ENUMDOC
3756 32-bit offset to symbol with PLT entry, relative to this relocation.
3757
3758 ENUM
3759 BFD_RELOC_860_COPY
3760 ENUMX
3761 BFD_RELOC_860_GLOB_DAT
3762 ENUMX
3763 BFD_RELOC_860_JUMP_SLOT
3764 ENUMX
3765 BFD_RELOC_860_RELATIVE
3766 ENUMX
3767 BFD_RELOC_860_PC26
3768 ENUMX
3769 BFD_RELOC_860_PLT26
3770 ENUMX
3771 BFD_RELOC_860_PC16
3772 ENUMX
3773 BFD_RELOC_860_LOW0
3774 ENUMX
3775 BFD_RELOC_860_SPLIT0
3776 ENUMX
3777 BFD_RELOC_860_LOW1
3778 ENUMX
3779 BFD_RELOC_860_SPLIT1
3780 ENUMX
3781 BFD_RELOC_860_LOW2
3782 ENUMX
3783 BFD_RELOC_860_SPLIT2
3784 ENUMX
3785 BFD_RELOC_860_LOW3
3786 ENUMX
3787 BFD_RELOC_860_LOGOT0
3788 ENUMX
3789 BFD_RELOC_860_SPGOT0
3790 ENUMX
3791 BFD_RELOC_860_LOGOT1
3792 ENUMX
3793 BFD_RELOC_860_SPGOT1
3794 ENUMX
3795 BFD_RELOC_860_LOGOTOFF0
3796 ENUMX
3797 BFD_RELOC_860_SPGOTOFF0
3798 ENUMX
3799 BFD_RELOC_860_LOGOTOFF1
3800 ENUMX
3801 BFD_RELOC_860_SPGOTOFF1
3802 ENUMX
3803 BFD_RELOC_860_LOGOTOFF2
3804 ENUMX
3805 BFD_RELOC_860_LOGOTOFF3
3806 ENUMX
3807 BFD_RELOC_860_LOPC
3808 ENUMX
3809 BFD_RELOC_860_HIGHADJ
3810 ENUMX
3811 BFD_RELOC_860_HAGOT
3812 ENUMX
3813 BFD_RELOC_860_HAGOTOFF
3814 ENUMX
3815 BFD_RELOC_860_HAPC
3816 ENUMX
3817 BFD_RELOC_860_HIGH
3818 ENUMX
3819 BFD_RELOC_860_HIGOT
3820 ENUMX
3821 BFD_RELOC_860_HIGOTOFF
3822 ENUMDOC
3823 Intel i860 Relocations.
3824
3825 ENUM
3826 BFD_RELOC_OPENRISC_ABS_26
3827 ENUMX
3828 BFD_RELOC_OPENRISC_REL_26
3829 ENUMDOC
3830 OpenRISC Relocations.
3831
3832 ENUM
3833 BFD_RELOC_H8_DIR16A8
3834 ENUMX
3835 BFD_RELOC_H8_DIR16R8
3836 ENUMX
3837 BFD_RELOC_H8_DIR24A8
3838 ENUMX
3839 BFD_RELOC_H8_DIR24R8
3840 ENUMX
3841 BFD_RELOC_H8_DIR32A16
3842 ENUMDOC
3843 H8 elf Relocations.
3844
3845 ENUM
3846 BFD_RELOC_XSTORMY16_REL_12
3847 ENUMX
3848 BFD_RELOC_XSTORMY16_12
3849 ENUMX
3850 BFD_RELOC_XSTORMY16_24
3851 ENUMX
3852 BFD_RELOC_XSTORMY16_FPTR16
3853 ENUMDOC
3854 Sony Xstormy16 Relocations.
3855
3856 ENUM
3857 BFD_RELOC_VAX_GLOB_DAT
3858 ENUMX
3859 BFD_RELOC_VAX_JMP_SLOT
3860 ENUMX
3861 BFD_RELOC_VAX_RELATIVE
3862 ENUMDOC
3863 Relocations used by VAX ELF.
3864
3865 ENUM
3866 BFD_RELOC_MSP430_10_PCREL
3867 ENUMX
3868 BFD_RELOC_MSP430_16_PCREL
3869 ENUMX
3870 BFD_RELOC_MSP430_16
3871 ENUMX
3872 BFD_RELOC_MSP430_16_PCREL_BYTE
3873 ENUMX
3874 BFD_RELOC_MSP430_16_BYTE
3875 ENUMDOC
3876 msp430 specific relocation codes
3877
3878 ENUM
3879 BFD_RELOC_IQ2000_OFFSET_16
3880 ENUMX
3881 BFD_RELOC_IQ2000_OFFSET_21
3882 ENUMX
3883 BFD_RELOC_IQ2000_UHI16
3884 ENUMDOC
3885 IQ2000 Relocations.
3886
3887 ENUM
3888 BFD_RELOC_XTENSA_RTLD
3889 ENUMDOC
3890 Special Xtensa relocation used only by PLT entries in ELF shared
3891 objects to indicate that the runtime linker should set the value
3892 to one of its own internal functions or data structures.
3893 ENUM
3894 BFD_RELOC_XTENSA_GLOB_DAT
3895 ENUMX
3896 BFD_RELOC_XTENSA_JMP_SLOT
3897 ENUMX
3898 BFD_RELOC_XTENSA_RELATIVE
3899 ENUMDOC
3900 Xtensa relocations for ELF shared objects.
3901 ENUM
3902 BFD_RELOC_XTENSA_PLT
3903 ENUMDOC
3904 Xtensa relocation used in ELF object files for symbols that may require
3905 PLT entries. Otherwise, this is just a generic 32-bit relocation.
3906 ENUM
3907 BFD_RELOC_XTENSA_OP0
3908 ENUMX
3909 BFD_RELOC_XTENSA_OP1
3910 ENUMX
3911 BFD_RELOC_XTENSA_OP2
3912 ENUMDOC
3913 Generic Xtensa relocations. Only the operand number is encoded
3914 in the relocation. The details are determined by extracting the
3915 instruction opcode.
3916 ENUM
3917 BFD_RELOC_XTENSA_ASM_EXPAND
3918 ENUMDOC
3919 Xtensa relocation to mark that the assembler expanded the
3920 instructions from an original target. The expansion size is
3921 encoded in the reloc size.
3922 ENUM
3923 BFD_RELOC_XTENSA_ASM_SIMPLIFY
3924 ENUMDOC
3925 Xtensa relocation to mark that the linker should simplify
3926 assembler-expanded instructions. This is commonly used
3927 internally by the linker after analysis of a
3928 BFD_RELOC_XTENSA_ASM_EXPAND.
3929
3930 ENDSENUM
3931 BFD_RELOC_UNUSED
3932 CODE_FRAGMENT
3933 .
3934 .typedef enum bfd_reloc_code_real bfd_reloc_code_real_type;
3935 */
3936
3937 /*
3938 FUNCTION
3939 bfd_reloc_type_lookup
3940
3941 SYNOPSIS
3942 reloc_howto_type *bfd_reloc_type_lookup
3943 (bfd *abfd, bfd_reloc_code_real_type code);
3944
3945 DESCRIPTION
3946 Return a pointer to a howto structure which, when
3947 invoked, will perform the relocation @var{code} on data from the
3948 architecture noted.
3949
3950 */
3951
3952 reloc_howto_type *
3953 bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
3954 {
3955 return BFD_SEND (abfd, reloc_type_lookup, (abfd, code));
3956 }
3957
3958 static reloc_howto_type bfd_howto_32 =
3959 HOWTO (0, 00, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "VRT32", FALSE, 0xffffffff, 0xffffffff, TRUE);
3960
3961 /*
3962 INTERNAL_FUNCTION
3963 bfd_default_reloc_type_lookup
3964
3965 SYNOPSIS
3966 reloc_howto_type *bfd_default_reloc_type_lookup
3967 (bfd *abfd, bfd_reloc_code_real_type code);
3968
3969 DESCRIPTION
3970 Provides a default relocation lookup routine for any architecture.
3971
3972 */
3973
3974 reloc_howto_type *
3975 bfd_default_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
3976 {
3977 switch (code)
3978 {
3979 case BFD_RELOC_CTOR:
3980 /* The type of reloc used in a ctor, which will be as wide as the
3981 address - so either a 64, 32, or 16 bitter. */
3982 switch (bfd_get_arch_info (abfd)->bits_per_address)
3983 {
3984 case 64:
3985 BFD_FAIL ();
3986 case 32:
3987 return &bfd_howto_32;
3988 case 16:
3989 BFD_FAIL ();
3990 default:
3991 BFD_FAIL ();
3992 }
3993 default:
3994 BFD_FAIL ();
3995 }
3996 return NULL;
3997 }
3998
3999 /*
4000 FUNCTION
4001 bfd_get_reloc_code_name
4002
4003 SYNOPSIS
4004 const char *bfd_get_reloc_code_name (bfd_reloc_code_real_type code);
4005
4006 DESCRIPTION
4007 Provides a printable name for the supplied relocation code.
4008 Useful mainly for printing error messages.
4009 */
4010
4011 const char *
4012 bfd_get_reloc_code_name (bfd_reloc_code_real_type code)
4013 {
4014 if (code > BFD_RELOC_UNUSED)
4015 return 0;
4016 return bfd_reloc_code_real_names[code];
4017 }
4018
4019 /*
4020 INTERNAL_FUNCTION
4021 bfd_generic_relax_section
4022
4023 SYNOPSIS
4024 bfd_boolean bfd_generic_relax_section
4025 (bfd *abfd,
4026 asection *section,
4027 struct bfd_link_info *,
4028 bfd_boolean *);
4029
4030 DESCRIPTION
4031 Provides default handling for relaxing for back ends which
4032 don't do relaxing -- i.e., does nothing.
4033 */
4034
4035 bfd_boolean
4036 bfd_generic_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
4037 asection *section ATTRIBUTE_UNUSED,
4038 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
4039 bfd_boolean *again)
4040 {
4041 *again = FALSE;
4042 return TRUE;
4043 }
4044
4045 /*
4046 INTERNAL_FUNCTION
4047 bfd_generic_gc_sections
4048
4049 SYNOPSIS
4050 bfd_boolean bfd_generic_gc_sections
4051 (bfd *, struct bfd_link_info *);
4052
4053 DESCRIPTION
4054 Provides default handling for relaxing for back ends which
4055 don't do section gc -- i.e., does nothing.
4056 */
4057
4058 bfd_boolean
4059 bfd_generic_gc_sections (bfd *abfd ATTRIBUTE_UNUSED,
4060 struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4061 {
4062 return TRUE;
4063 }
4064
4065 /*
4066 INTERNAL_FUNCTION
4067 bfd_generic_merge_sections
4068
4069 SYNOPSIS
4070 bfd_boolean bfd_generic_merge_sections
4071 (bfd *, struct bfd_link_info *);
4072
4073 DESCRIPTION
4074 Provides default handling for SEC_MERGE section merging for back ends
4075 which don't have SEC_MERGE support -- i.e., does nothing.
4076 */
4077
4078 bfd_boolean
4079 bfd_generic_merge_sections (bfd *abfd ATTRIBUTE_UNUSED,
4080 struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4081 {
4082 return TRUE;
4083 }
4084
4085 /*
4086 INTERNAL_FUNCTION
4087 bfd_generic_get_relocated_section_contents
4088
4089 SYNOPSIS
4090 bfd_byte *bfd_generic_get_relocated_section_contents
4091 (bfd *abfd,
4092 struct bfd_link_info *link_info,
4093 struct bfd_link_order *link_order,
4094 bfd_byte *data,
4095 bfd_boolean relocatable,
4096 asymbol **symbols);
4097
4098 DESCRIPTION
4099 Provides default handling of relocation effort for back ends
4100 which can't be bothered to do it efficiently.
4101
4102 */
4103
4104 bfd_byte *
4105 bfd_generic_get_relocated_section_contents (bfd *abfd,
4106 struct bfd_link_info *link_info,
4107 struct bfd_link_order *link_order,
4108 bfd_byte *data,
4109 bfd_boolean relocatable,
4110 asymbol **symbols)
4111 {
4112 /* Get enough memory to hold the stuff. */
4113 bfd *input_bfd = link_order->u.indirect.section->owner;
4114 asection *input_section = link_order->u.indirect.section;
4115
4116 long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
4117 arelent **reloc_vector = NULL;
4118 long reloc_count;
4119
4120 if (reloc_size < 0)
4121 goto error_return;
4122
4123 reloc_vector = bfd_malloc (reloc_size);
4124 if (reloc_vector == NULL && reloc_size != 0)
4125 goto error_return;
4126
4127 /* Read in the section. */
4128 if (!bfd_get_section_contents (input_bfd,
4129 input_section,
4130 data,
4131 0,
4132 input_section->_raw_size))
4133 goto error_return;
4134
4135 /* We're not relaxing the section, so just copy the size info. */
4136 input_section->_cooked_size = input_section->_raw_size;
4137 input_section->reloc_done = TRUE;
4138
4139 reloc_count = bfd_canonicalize_reloc (input_bfd,
4140 input_section,
4141 reloc_vector,
4142 symbols);
4143 if (reloc_count < 0)
4144 goto error_return;
4145
4146 if (reloc_count > 0)
4147 {
4148 arelent **parent;
4149 for (parent = reloc_vector; *parent != NULL; parent++)
4150 {
4151 char *error_message = NULL;
4152 bfd_reloc_status_type r =
4153 bfd_perform_relocation (input_bfd,
4154 *parent,
4155 data,
4156 input_section,
4157 relocatable ? abfd : NULL,
4158 &error_message);
4159
4160 if (relocatable)
4161 {
4162 asection *os = input_section->output_section;
4163
4164 /* A partial link, so keep the relocs. */
4165 os->orelocation[os->reloc_count] = *parent;
4166 os->reloc_count++;
4167 }
4168
4169 if (r != bfd_reloc_ok)
4170 {
4171 switch (r)
4172 {
4173 case bfd_reloc_undefined:
4174 if (!((*link_info->callbacks->undefined_symbol)
4175 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4176 input_bfd, input_section, (*parent)->address,
4177 TRUE)))
4178 goto error_return;
4179 break;
4180 case bfd_reloc_dangerous:
4181 BFD_ASSERT (error_message != NULL);
4182 if (!((*link_info->callbacks->reloc_dangerous)
4183 (link_info, error_message, input_bfd, input_section,
4184 (*parent)->address)))
4185 goto error_return;
4186 break;
4187 case bfd_reloc_overflow:
4188 if (!((*link_info->callbacks->reloc_overflow)
4189 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4190 (*parent)->howto->name, (*parent)->addend,
4191 input_bfd, input_section, (*parent)->address)))
4192 goto error_return;
4193 break;
4194 case bfd_reloc_outofrange:
4195 default:
4196 abort ();
4197 break;
4198 }
4199
4200 }
4201 }
4202 }
4203 if (reloc_vector != NULL)
4204 free (reloc_vector);
4205 return data;
4206
4207 error_return:
4208 if (reloc_vector != NULL)
4209 free (reloc_vector);
4210 return NULL;
4211 }
GDB Binutils - Deliverables
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