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2004-09-19 H.J. Lu <hongjiu.lu@intel.com>
[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, 2004
4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
6
7 This file is part of BFD, the Binary File Descriptor library.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22
23 /*
24 SECTION
25 Relocations
26
27 BFD maintains relocations in much the same way it maintains
28 symbols: they are left alone until required, then read in
29 en-masse and translated into an internal form. A common
30 routine <<bfd_perform_relocation>> acts upon the
31 canonical form to do the fixup.
32
33 Relocations are maintained on a per section basis,
34 while symbols are maintained on a per BFD basis.
35
36 All that a back end has to do to fit the BFD interface is to create
37 a <<struct reloc_cache_entry>> for each relocation
38 in a particular section, and fill in the right bits of the structures.
39
40 @menu
41 @* typedef arelent::
42 @* howto manager::
43 @end menu
44
45 */
46
47 /* DO compile in the reloc_code name table from libbfd.h. */
48 #define _BFD_MAKE_TABLE_bfd_reloc_code_real
49
50 #include "bfd.h"
51 #include "sysdep.h"
52 #include "bfdlink.h"
53 #include "libbfd.h"
54 /*
55 DOCDD
56 INODE
57 typedef arelent, howto manager, Relocations, Relocations
58
59 SUBSECTION
60 typedef arelent
61
62 This is the structure of a relocation entry:
63
64 CODE_FRAGMENT
65 .
66 .typedef enum bfd_reloc_status
67 .{
68 . {* No errors detected. *}
69 . bfd_reloc_ok,
70 .
71 . {* The relocation was performed, but there was an overflow. *}
72 . bfd_reloc_overflow,
73 .
74 . {* The address to relocate was not within the section supplied. *}
75 . bfd_reloc_outofrange,
76 .
77 . {* Used by special functions. *}
78 . bfd_reloc_continue,
79 .
80 . {* Unsupported relocation size requested. *}
81 . bfd_reloc_notsupported,
82 .
83 . {* Unused. *}
84 . bfd_reloc_other,
85 .
86 . {* The symbol to relocate against was undefined. *}
87 . bfd_reloc_undefined,
88 .
89 . {* The relocation was performed, but may not be ok - presently
90 . generated only when linking i960 coff files with i960 b.out
91 . symbols. If this type is returned, the error_message argument
92 . to bfd_perform_relocation will be set. *}
93 . bfd_reloc_dangerous
94 . }
95 . bfd_reloc_status_type;
96 .
97 .
98 .typedef struct reloc_cache_entry
99 .{
100 . {* A pointer into the canonical table of pointers. *}
101 . struct bfd_symbol **sym_ptr_ptr;
102 .
103 . {* offset in section. *}
104 . bfd_size_type address;
105 .
106 . {* addend for relocation value. *}
107 . bfd_vma addend;
108 .
109 . {* Pointer to how to perform the required relocation. *}
110 . reloc_howto_type *howto;
111 .
112 .}
113 .arelent;
114 .
115 */
116
117 /*
118 DESCRIPTION
119
120 Here is a description of each of the fields within an <<arelent>>:
121
122 o <<sym_ptr_ptr>>
123
124 The symbol table pointer points to a pointer to the symbol
125 associated with the relocation request. It is the pointer
126 into the table returned by the back end's
127 <<canonicalize_symtab>> action. @xref{Symbols}. The symbol is
128 referenced through a pointer to a pointer so that tools like
129 the linker can fix up all the symbols of the same name by
130 modifying only one pointer. The relocation routine looks in
131 the symbol and uses the base of the section the symbol is
132 attached to and the value of the symbol as the initial
133 relocation offset. If the symbol pointer is zero, then the
134 section provided is looked up.
135
136 o <<address>>
137
138 The <<address>> field gives the offset in bytes from the base of
139 the section data which owns the relocation record to the first
140 byte of relocatable information. The actual data relocated
141 will be relative to this point; for example, a relocation
142 type which modifies the bottom two bytes of a four byte word
143 would not touch the first byte pointed to in a big endian
144 world.
145
146 o <<addend>>
147
148 The <<addend>> is a value provided by the back end to be added (!)
149 to the relocation offset. Its interpretation is dependent upon
150 the howto. For example, on the 68k the code:
151
152 | char foo[];
153 | main()
154 | {
155 | return foo[0x12345678];
156 | }
157
158 Could be compiled into:
159
160 | linkw fp,#-4
161 | moveb @@#12345678,d0
162 | extbl d0
163 | unlk fp
164 | rts
165
166 This could create a reloc pointing to <<foo>>, but leave the
167 offset in the data, something like:
168
169 |RELOCATION RECORDS FOR [.text]:
170 |offset type value
171 |00000006 32 _foo
172 |
173 |00000000 4e56 fffc ; linkw fp,#-4
174 |00000004 1039 1234 5678 ; moveb @@#12345678,d0
175 |0000000a 49c0 ; extbl d0
176 |0000000c 4e5e ; unlk fp
177 |0000000e 4e75 ; rts
178
179 Using coff and an 88k, some instructions don't have enough
180 space in them to represent the full address range, and
181 pointers have to be loaded in two parts. So you'd get something like:
182
183 | or.u r13,r0,hi16(_foo+0x12345678)
184 | ld.b r2,r13,lo16(_foo+0x12345678)
185 | jmp r1
186
187 This should create two relocs, both pointing to <<_foo>>, and with
188 0x12340000 in their addend field. The data would consist of:
189
190 |RELOCATION RECORDS FOR [.text]:
191 |offset type value
192 |00000002 HVRT16 _foo+0x12340000
193 |00000006 LVRT16 _foo+0x12340000
194 |
195 |00000000 5da05678 ; or.u r13,r0,0x5678
196 |00000004 1c4d5678 ; ld.b r2,r13,0x5678
197 |00000008 f400c001 ; jmp r1
198
199 The relocation routine digs out the value from the data, adds
200 it to the addend to get the original offset, and then adds the
201 value of <<_foo>>. Note that all 32 bits have to be kept around
202 somewhere, to cope with carry from bit 15 to bit 16.
203
204 One further example is the sparc and the a.out format. The
205 sparc has a similar problem to the 88k, in that some
206 instructions don't have room for an entire offset, but on the
207 sparc the parts are created in odd sized lumps. The designers of
208 the a.out format chose to not use the data within the section
209 for storing part of the offset; all the offset is kept within
210 the reloc. Anything in the data should be ignored.
211
212 | save %sp,-112,%sp
213 | sethi %hi(_foo+0x12345678),%g2
214 | ldsb [%g2+%lo(_foo+0x12345678)],%i0
215 | ret
216 | restore
217
218 Both relocs contain a pointer to <<foo>>, and the offsets
219 contain junk.
220
221 |RELOCATION RECORDS FOR [.text]:
222 |offset type value
223 |00000004 HI22 _foo+0x12345678
224 |00000008 LO10 _foo+0x12345678
225 |
226 |00000000 9de3bf90 ; save %sp,-112,%sp
227 |00000004 05000000 ; sethi %hi(_foo+0),%g2
228 |00000008 f048a000 ; ldsb [%g2+%lo(_foo+0)],%i0
229 |0000000c 81c7e008 ; ret
230 |00000010 81e80000 ; restore
231
232 o <<howto>>
233
234 The <<howto>> field can be imagined as a
235 relocation instruction. It is a pointer to a structure which
236 contains information on what to do with all of the other
237 information in the reloc record and data section. A back end
238 would normally have a relocation instruction set and turn
239 relocations into pointers to the correct structure on input -
240 but it would be possible to create each howto field on demand.
241
242 */
243
244 /*
245 SUBSUBSECTION
246 <<enum complain_overflow>>
247
248 Indicates what sort of overflow checking should be done when
249 performing a relocation.
250
251 CODE_FRAGMENT
252 .
253 .enum complain_overflow
254 .{
255 . {* Do not complain on overflow. *}
256 . complain_overflow_dont,
257 .
258 . {* Complain if the bitfield overflows, whether it is considered
259 . as signed or unsigned. *}
260 . complain_overflow_bitfield,
261 .
262 . {* Complain if the value overflows when considered as signed
263 . number. *}
264 . complain_overflow_signed,
265 .
266 . {* Complain if the value overflows when considered as an
267 . unsigned number. *}
268 . complain_overflow_unsigned
269 .};
270
271 */
272
273 /*
274 SUBSUBSECTION
275 <<reloc_howto_type>>
276
277 The <<reloc_howto_type>> is a structure which contains all the
278 information that libbfd needs to know to tie up a back end's data.
279
280 CODE_FRAGMENT
281 .struct bfd_symbol; {* Forward declaration. *}
282 .
283 .struct reloc_howto_struct
284 .{
285 . {* The type field has mainly a documentary use - the back end can
286 . do what it wants with it, though normally the back end's
287 . external idea of what a reloc number is stored
288 . in this field. For example, a PC relative word relocation
289 . in a coff environment has the type 023 - because that's
290 . what the outside world calls a R_PCRWORD reloc. *}
291 . unsigned int type;
292 .
293 . {* The value the final relocation is shifted right by. This drops
294 . unwanted data from the relocation. *}
295 . unsigned int rightshift;
296 .
297 . {* The size of the item to be relocated. This is *not* a
298 . power-of-two measure. To get the number of bytes operated
299 . on by a type of relocation, use bfd_get_reloc_size. *}
300 . int size;
301 .
302 . {* The number of bits in the item to be relocated. This is used
303 . when doing overflow checking. *}
304 . unsigned int bitsize;
305 .
306 . {* Notes that the relocation is relative to the location in the
307 . data section of the addend. The relocation function will
308 . subtract from the relocation value the address of the location
309 . being relocated. *}
310 . bfd_boolean pc_relative;
311 .
312 . {* The bit position of the reloc value in the destination.
313 . The relocated value is left shifted by this amount. *}
314 . unsigned int bitpos;
315 .
316 . {* What type of overflow error should be checked for when
317 . relocating. *}
318 . enum complain_overflow complain_on_overflow;
319 .
320 . {* If this field is non null, then the supplied function is
321 . called rather than the normal function. This allows really
322 . strange relocation methods to be accommodated (e.g., i960 callj
323 . instructions). *}
324 . bfd_reloc_status_type (*special_function)
325 . (bfd *, arelent *, struct bfd_symbol *, void *, asection *,
326 . bfd *, char **);
327 .
328 . {* The textual name of the relocation type. *}
329 . char *name;
330 .
331 . {* Some formats record a relocation addend in the section contents
332 . rather than with the relocation. For ELF formats this is the
333 . distinction between USE_REL and USE_RELA (though the code checks
334 . for USE_REL == 1/0). The value of this field is TRUE if the
335 . addend is recorded with the section contents; when performing a
336 . partial link (ld -r) the section contents (the data) will be
337 . modified. The value of this field is FALSE if addends are
338 . recorded with the relocation (in arelent.addend); when performing
339 . a partial link the relocation will be modified.
340 . All relocations for all ELF USE_RELA targets should set this field
341 . to FALSE (values of TRUE should be looked on with suspicion).
342 . However, the converse is not true: not all relocations of all ELF
343 . USE_REL targets set this field to TRUE. Why this is so is peculiar
344 . to each particular target. For relocs that aren't used in partial
345 . links (e.g. GOT stuff) it doesn't matter what this is set to. *}
346 . bfd_boolean partial_inplace;
347 .
348 . {* src_mask selects the part of the instruction (or data) to be used
349 . in the relocation sum. If the target relocations don't have an
350 . addend in the reloc, eg. ELF USE_REL, src_mask will normally equal
351 . dst_mask to extract the addend from the section contents. If
352 . relocations do have an addend in the reloc, eg. ELF USE_RELA, this
353 . field should be zero. Non-zero values for ELF USE_RELA targets are
354 . bogus as in those cases the value in the dst_mask part of the
355 . section contents should be treated as garbage. *}
356 . bfd_vma src_mask;
357 .
358 . {* dst_mask selects which parts of the instruction (or data) are
359 . replaced with a relocated value. *}
360 . bfd_vma dst_mask;
361 .
362 . {* When some formats create PC relative instructions, they leave
363 . the value of the pc of the place being relocated in the offset
364 . slot of the instruction, so that a PC relative relocation can
365 . be made just by adding in an ordinary offset (e.g., sun3 a.out).
366 . Some formats leave the displacement part of an instruction
367 . empty (e.g., m88k bcs); this flag signals the fact. *}
368 . bfd_boolean pcrel_offset;
369 .};
370 .
371 */
372
373 /*
374 FUNCTION
375 The HOWTO Macro
376
377 DESCRIPTION
378 The HOWTO define is horrible and will go away.
379
380 .#define HOWTO(C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC) \
381 . { (unsigned) C, R, S, B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC }
382
383 DESCRIPTION
384 And will be replaced with the totally magic way. But for the
385 moment, we are compatible, so do it this way.
386
387 .#define NEWHOWTO(FUNCTION, NAME, SIZE, REL, IN) \
388 . HOWTO (0, 0, SIZE, 0, REL, 0, complain_overflow_dont, FUNCTION, \
389 . NAME, FALSE, 0, 0, IN)
390 .
391
392 DESCRIPTION
393 This is used to fill in an empty howto entry in an array.
394
395 .#define EMPTY_HOWTO(C) \
396 . HOWTO ((C), 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL, \
397 . NULL, FALSE, 0, 0, FALSE)
398 .
399
400 DESCRIPTION
401 Helper routine to turn a symbol into a relocation value.
402
403 .#define HOWTO_PREPARE(relocation, symbol) \
404 . { \
405 . if (symbol != NULL) \
406 . { \
407 . if (bfd_is_com_section (symbol->section)) \
408 . { \
409 . relocation = 0; \
410 . } \
411 . else \
412 . { \
413 . relocation = symbol->value; \
414 . } \
415 . } \
416 . }
417 .
418 */
419
420 /*
421 FUNCTION
422 bfd_get_reloc_size
423
424 SYNOPSIS
425 unsigned int bfd_get_reloc_size (reloc_howto_type *);
426
427 DESCRIPTION
428 For a reloc_howto_type that operates on a fixed number of bytes,
429 this returns the number of bytes operated on.
430 */
431
432 unsigned int
433 bfd_get_reloc_size (reloc_howto_type *howto)
434 {
435 switch (howto->size)
436 {
437 case 0: return 1;
438 case 1: return 2;
439 case 2: return 4;
440 case 3: return 0;
441 case 4: return 8;
442 case 8: return 16;
443 case -2: return 4;
444 default: abort ();
445 }
446 }
447
448 /*
449 TYPEDEF
450 arelent_chain
451
452 DESCRIPTION
453
454 How relocs are tied together in an <<asection>>:
455
456 .typedef struct relent_chain
457 .{
458 . arelent relent;
459 . struct relent_chain *next;
460 .}
461 .arelent_chain;
462 .
463 */
464
465 /* N_ONES produces N one bits, without overflowing machine arithmetic. */
466 #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1)
467
468 /*
469 FUNCTION
470 bfd_check_overflow
471
472 SYNOPSIS
473 bfd_reloc_status_type bfd_check_overflow
474 (enum complain_overflow how,
475 unsigned int bitsize,
476 unsigned int rightshift,
477 unsigned int addrsize,
478 bfd_vma relocation);
479
480 DESCRIPTION
481 Perform overflow checking on @var{relocation} which has
482 @var{bitsize} significant bits and will be shifted right by
483 @var{rightshift} bits, on a machine with addresses containing
484 @var{addrsize} significant bits. The result is either of
485 @code{bfd_reloc_ok} or @code{bfd_reloc_overflow}.
486
487 */
488
489 bfd_reloc_status_type
490 bfd_check_overflow (enum complain_overflow how,
491 unsigned int bitsize,
492 unsigned int rightshift,
493 unsigned int addrsize,
494 bfd_vma relocation)
495 {
496 bfd_vma fieldmask, addrmask, signmask, ss, a;
497 bfd_reloc_status_type flag = bfd_reloc_ok;
498
499 a = relocation;
500
501 /* Note: BITSIZE should always be <= ADDRSIZE, but in case it's not,
502 we'll be permissive: extra bits in the field mask will
503 automatically extend the address mask for purposes of the
504 overflow check. */
505 fieldmask = N_ONES (bitsize);
506 addrmask = N_ONES (addrsize) | fieldmask;
507
508 switch (how)
509 {
510 case complain_overflow_dont:
511 break;
512
513 case complain_overflow_signed:
514 /* If any sign bits are set, all sign bits must be set. That
515 is, A must be a valid negative address after shifting. */
516 a = (a & addrmask) >> rightshift;
517 signmask = ~ (fieldmask >> 1);
518 ss = a & signmask;
519 if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
520 flag = bfd_reloc_overflow;
521 break;
522
523 case complain_overflow_unsigned:
524 /* We have an overflow if the address does not fit in the field. */
525 a = (a & addrmask) >> rightshift;
526 if ((a & ~ fieldmask) != 0)
527 flag = bfd_reloc_overflow;
528 break;
529
530 case complain_overflow_bitfield:
531 /* Bitfields are sometimes signed, sometimes unsigned. We
532 explicitly allow an address wrap too, which means a bitfield
533 of n bits is allowed to store -2**n to 2**n-1. Thus overflow
534 if the value has some, but not all, bits set outside the
535 field. */
536 a >>= rightshift;
537 ss = a & ~ fieldmask;
538 if (ss != 0 && ss != (((bfd_vma) -1 >> rightshift) & ~ fieldmask))
539 flag = bfd_reloc_overflow;
540 break;
541
542 default:
543 abort ();
544 }
545
546 return flag;
547 }
548
549 /*
550 FUNCTION
551 bfd_perform_relocation
552
553 SYNOPSIS
554 bfd_reloc_status_type bfd_perform_relocation
555 (bfd *abfd,
556 arelent *reloc_entry,
557 void *data,
558 asection *input_section,
559 bfd *output_bfd,
560 char **error_message);
561
562 DESCRIPTION
563 If @var{output_bfd} is supplied to this function, the
564 generated image will be relocatable; the relocations are
565 copied to the output file after they have been changed to
566 reflect the new state of the world. There are two ways of
567 reflecting the results of partial linkage in an output file:
568 by modifying the output data in place, and by modifying the
569 relocation record. Some native formats (e.g., basic a.out and
570 basic coff) have no way of specifying an addend in the
571 relocation type, so the addend has to go in the output data.
572 This is no big deal since in these formats the output data
573 slot will always be big enough for the addend. Complex reloc
574 types with addends were invented to solve just this problem.
575 The @var{error_message} argument is set to an error message if
576 this return @code{bfd_reloc_dangerous}.
577
578 */
579
580 bfd_reloc_status_type
581 bfd_perform_relocation (bfd *abfd,
582 arelent *reloc_entry,
583 void *data,
584 asection *input_section,
585 bfd *output_bfd,
586 char **error_message)
587 {
588 bfd_vma relocation;
589 bfd_reloc_status_type flag = bfd_reloc_ok;
590 bfd_size_type octets = reloc_entry->address * bfd_octets_per_byte (abfd);
591 bfd_vma output_base = 0;
592 reloc_howto_type *howto = reloc_entry->howto;
593 asection *reloc_target_output_section;
594 asymbol *symbol;
595
596 symbol = *(reloc_entry->sym_ptr_ptr);
597 if (bfd_is_abs_section (symbol->section)
598 && output_bfd != NULL)
599 {
600 reloc_entry->address += input_section->output_offset;
601 return bfd_reloc_ok;
602 }
603
604 /* If we are not producing relocatable output, return an error if
605 the symbol is not defined. An undefined weak symbol is
606 considered to have a value of zero (SVR4 ABI, p. 4-27). */
607 if (bfd_is_und_section (symbol->section)
608 && (symbol->flags & BSF_WEAK) == 0
609 && output_bfd == NULL)
610 flag = bfd_reloc_undefined;
611
612 /* If there is a function supplied to handle this relocation type,
613 call it. It'll return `bfd_reloc_continue' if further processing
614 can be done. */
615 if (howto->special_function)
616 {
617 bfd_reloc_status_type cont;
618 cont = howto->special_function (abfd, reloc_entry, symbol, data,
619 input_section, output_bfd,
620 error_message);
621 if (cont != bfd_reloc_continue)
622 return cont;
623 }
624
625 /* Is the address of the relocation really within the section? */
626 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
627 return bfd_reloc_outofrange;
628
629 /* Work out which section the relocation is targeted at and the
630 initial relocation command value. */
631
632 /* Get symbol value. (Common symbols are special.) */
633 if (bfd_is_com_section (symbol->section))
634 relocation = 0;
635 else
636 relocation = symbol->value;
637
638 reloc_target_output_section = symbol->section->output_section;
639
640 /* Convert input-section-relative symbol value to absolute. */
641 if ((output_bfd && ! howto->partial_inplace)
642 || reloc_target_output_section == NULL)
643 output_base = 0;
644 else
645 output_base = reloc_target_output_section->vma;
646
647 relocation += output_base + symbol->section->output_offset;
648
649 /* Add in supplied addend. */
650 relocation += reloc_entry->addend;
651
652 /* Here the variable relocation holds the final address of the
653 symbol we are relocating against, plus any addend. */
654
655 if (howto->pc_relative)
656 {
657 /* This is a PC relative relocation. We want to set RELOCATION
658 to the distance between the address of the symbol and the
659 location. RELOCATION is already the address of the symbol.
660
661 We start by subtracting the address of the section containing
662 the location.
663
664 If pcrel_offset is set, we must further subtract the position
665 of the location within the section. Some targets arrange for
666 the addend to be the negative of the position of the location
667 within the section; for example, i386-aout does this. For
668 i386-aout, pcrel_offset is FALSE. Some other targets do not
669 include the position of the location; for example, m88kbcs,
670 or ELF. For those targets, pcrel_offset is TRUE.
671
672 If we are producing relocatable output, then we must ensure
673 that this reloc will be correctly computed when the final
674 relocation is done. If pcrel_offset is FALSE we want to wind
675 up with the negative of the location within the section,
676 which means we must adjust the existing addend by the change
677 in the location within the section. If pcrel_offset is TRUE
678 we do not want to adjust the existing addend at all.
679
680 FIXME: This seems logical to me, but for the case of
681 producing relocatable output it is not what the code
682 actually does. I don't want to change it, because it seems
683 far too likely that something will break. */
684
685 relocation -=
686 input_section->output_section->vma + input_section->output_offset;
687
688 if (howto->pcrel_offset)
689 relocation -= reloc_entry->address;
690 }
691
692 if (output_bfd != NULL)
693 {
694 if (! howto->partial_inplace)
695 {
696 /* This is a partial relocation, and we want to apply the relocation
697 to the reloc entry rather than the raw data. Modify the reloc
698 inplace to reflect what we now know. */
699 reloc_entry->addend = relocation;
700 reloc_entry->address += input_section->output_offset;
701 return flag;
702 }
703 else
704 {
705 /* This is a partial relocation, but inplace, so modify the
706 reloc record a bit.
707
708 If we've relocated with a symbol with a section, change
709 into a ref to the section belonging to the symbol. */
710
711 reloc_entry->address += input_section->output_offset;
712
713 /* WTF?? */
714 if (abfd->xvec->flavour == bfd_target_coff_flavour
715 && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
716 && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
717 {
718 #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 > bfd_get_section_limit (abfd, input_section))
1016 return bfd_reloc_outofrange;
1017
1018 /* Work out which section the relocation is targeted at and the
1019 initial relocation command value. */
1020
1021 /* Get symbol value. (Common symbols are special.) */
1022 if (bfd_is_com_section (symbol->section))
1023 relocation = 0;
1024 else
1025 relocation = symbol->value;
1026
1027 reloc_target_output_section = symbol->section->output_section;
1028
1029 /* Convert input-section-relative symbol value to absolute. */
1030 if (! howto->partial_inplace)
1031 output_base = 0;
1032 else
1033 output_base = reloc_target_output_section->vma;
1034
1035 relocation += output_base + symbol->section->output_offset;
1036
1037 /* Add in supplied addend. */
1038 relocation += reloc_entry->addend;
1039
1040 /* Here the variable relocation holds the final address of the
1041 symbol we are relocating against, plus any addend. */
1042
1043 if (howto->pc_relative)
1044 {
1045 /* This is a PC relative relocation. We want to set RELOCATION
1046 to the distance between the address of the symbol and the
1047 location. RELOCATION is already the address of the symbol.
1048
1049 We start by subtracting the address of the section containing
1050 the location.
1051
1052 If pcrel_offset is set, we must further subtract the position
1053 of the location within the section. Some targets arrange for
1054 the addend to be the negative of the position of the location
1055 within the section; for example, i386-aout does this. For
1056 i386-aout, pcrel_offset is FALSE. Some other targets do not
1057 include the position of the location; for example, m88kbcs,
1058 or ELF. For those targets, pcrel_offset is TRUE.
1059
1060 If we are producing relocatable output, then we must ensure
1061 that this reloc will be correctly computed when the final
1062 relocation is done. If pcrel_offset is FALSE we want to wind
1063 up with the negative of the location within the section,
1064 which means we must adjust the existing addend by the change
1065 in the location within the section. If pcrel_offset is TRUE
1066 we do not want to adjust the existing addend at all.
1067
1068 FIXME: This seems logical to me, but for the case of
1069 producing relocatable output it is not what the code
1070 actually does. I don't want to change it, because it seems
1071 far too likely that something will break. */
1072
1073 relocation -=
1074 input_section->output_section->vma + input_section->output_offset;
1075
1076 if (howto->pcrel_offset && howto->partial_inplace)
1077 relocation -= reloc_entry->address;
1078 }
1079
1080 if (! howto->partial_inplace)
1081 {
1082 /* This is a partial relocation, and we want to apply the relocation
1083 to the reloc entry rather than the raw data. Modify the reloc
1084 inplace to reflect what we now know. */
1085 reloc_entry->addend = relocation;
1086 reloc_entry->address += input_section->output_offset;
1087 return flag;
1088 }
1089 else
1090 {
1091 /* This is a partial relocation, but inplace, so modify the
1092 reloc record a bit.
1093
1094 If we've relocated with a symbol with a section, change
1095 into a ref to the section belonging to the symbol. */
1096 reloc_entry->address += input_section->output_offset;
1097
1098 /* WTF?? */
1099 if (abfd->xvec->flavour == bfd_target_coff_flavour
1100 && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
1101 && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
1102 {
1103 #if 1
1104 /* For m68k-coff, the addend was being subtracted twice during
1105 relocation with -r. Removing the line below this comment
1106 fixes that problem; see PR 2953.
1107
1108 However, Ian wrote the following, regarding removing the line below,
1109 which explains why it is still enabled: --djm
1110
1111 If you put a patch like that into BFD you need to check all the COFF
1112 linkers. I am fairly certain that patch will break coff-i386 (e.g.,
1113 SCO); see coff_i386_reloc in coff-i386.c where I worked around the
1114 problem in a different way. There may very well be a reason that the
1115 code works as it does.
1116
1117 Hmmm. The first obvious point is that bfd_install_relocation should
1118 not have any tests that depend upon the flavour. It's seem like
1119 entirely the wrong place for such a thing. The second obvious point
1120 is that the current code ignores the reloc addend when producing
1121 relocatable output for COFF. That's peculiar. In fact, I really
1122 have no idea what the point of the line you want to remove is.
1123
1124 A typical COFF reloc subtracts the old value of the symbol and adds in
1125 the new value to the location in the object file (if it's a pc
1126 relative reloc it adds the difference between the symbol value and the
1127 location). When relocating we need to preserve that property.
1128
1129 BFD handles this by setting the addend to the negative of the old
1130 value of the symbol. Unfortunately it handles common symbols in a
1131 non-standard way (it doesn't subtract the old value) but that's a
1132 different story (we can't change it without losing backward
1133 compatibility with old object files) (coff-i386 does subtract the old
1134 value, to be compatible with existing coff-i386 targets, like SCO).
1135
1136 So everything works fine when not producing relocatable output. When
1137 we are producing relocatable output, logically we should do exactly
1138 what we do when not producing relocatable output. Therefore, your
1139 patch is correct. In fact, it should probably always just set
1140 reloc_entry->addend to 0 for all cases, since it is, in fact, going to
1141 add the value into the object file. This won't hurt the COFF code,
1142 which doesn't use the addend; I'm not sure what it will do to other
1143 formats (the thing to check for would be whether any formats both use
1144 the addend and set partial_inplace).
1145
1146 When I wanted to make coff-i386 produce relocatable output, I ran
1147 into the problem that you are running into: I wanted to remove that
1148 line. Rather than risk it, I made the coff-i386 relocs use a special
1149 function; it's coff_i386_reloc in coff-i386.c. The function
1150 specifically adds the addend field into the object file, knowing that
1151 bfd_install_relocation is not going to. If you remove that line, then
1152 coff-i386.c will wind up adding the addend field in twice. It's
1153 trivial to fix; it just needs to be done.
1154
1155 The problem with removing the line is just that it may break some
1156 working code. With BFD it's hard to be sure of anything. The right
1157 way to deal with this is simply to build and test at least all the
1158 supported COFF targets. It should be straightforward if time and disk
1159 space consuming. For each target:
1160 1) build the linker
1161 2) generate some executable, and link it using -r (I would
1162 probably use paranoia.o and link against newlib/libc.a, which
1163 for all the supported targets would be available in
1164 /usr/cygnus/progressive/H-host/target/lib/libc.a).
1165 3) make the change to reloc.c
1166 4) rebuild the linker
1167 5) repeat step 2
1168 6) if the resulting object files are the same, you have at least
1169 made it no worse
1170 7) if they are different you have to figure out which version is
1171 right. */
1172 relocation -= reloc_entry->addend;
1173 #endif
1174 reloc_entry->addend = 0;
1175 }
1176 else
1177 {
1178 reloc_entry->addend = relocation;
1179 }
1180 }
1181
1182 /* FIXME: This overflow checking is incomplete, because the value
1183 might have overflowed before we get here. For a correct check we
1184 need to compute the value in a size larger than bitsize, but we
1185 can't reasonably do that for a reloc the same size as a host
1186 machine word.
1187 FIXME: We should also do overflow checking on the result after
1188 adding in the value contained in the object file. */
1189 if (howto->complain_on_overflow != complain_overflow_dont)
1190 flag = bfd_check_overflow (howto->complain_on_overflow,
1191 howto->bitsize,
1192 howto->rightshift,
1193 bfd_arch_bits_per_address (abfd),
1194 relocation);
1195
1196 /* Either we are relocating all the way, or we don't want to apply
1197 the relocation to the reloc entry (probably because there isn't
1198 any room in the output format to describe addends to relocs). */
1199
1200 /* The cast to bfd_vma avoids a bug in the Alpha OSF/1 C compiler
1201 (OSF version 1.3, compiler version 3.11). It miscompiles the
1202 following program:
1203
1204 struct str
1205 {
1206 unsigned int i0;
1207 } s = { 0 };
1208
1209 int
1210 main ()
1211 {
1212 unsigned long x;
1213
1214 x = 0x100000000;
1215 x <<= (unsigned long) s.i0;
1216 if (x == 0)
1217 printf ("failed\n");
1218 else
1219 printf ("succeeded (%lx)\n", x);
1220 }
1221 */
1222
1223 relocation >>= (bfd_vma) howto->rightshift;
1224
1225 /* Shift everything up to where it's going to be used. */
1226 relocation <<= (bfd_vma) howto->bitpos;
1227
1228 /* Wait for the day when all have the mask in them. */
1229
1230 /* What we do:
1231 i instruction to be left alone
1232 o offset within instruction
1233 r relocation offset to apply
1234 S src mask
1235 D dst mask
1236 N ~dst mask
1237 A part 1
1238 B part 2
1239 R result
1240
1241 Do this:
1242 (( i i i i i o o o o o from bfd_get<size>
1243 and S S S S S) to get the size offset we want
1244 + r r r r r r r r r r) to get the final value to place
1245 and D D D D D to chop to right size
1246 -----------------------
1247 = A A A A A
1248 And this:
1249 ( i i i i i o o o o o from bfd_get<size>
1250 and N N N N N ) get instruction
1251 -----------------------
1252 = B B B B B
1253
1254 And then:
1255 ( B B B B B
1256 or A A A A A)
1257 -----------------------
1258 = R R R R R R R R R R put into bfd_put<size>
1259 */
1260
1261 #define DOIT(x) \
1262 x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask))
1263
1264 data = (bfd_byte *) data_start + (octets - data_start_offset);
1265
1266 switch (howto->size)
1267 {
1268 case 0:
1269 {
1270 char x = bfd_get_8 (abfd, data);
1271 DOIT (x);
1272 bfd_put_8 (abfd, x, data);
1273 }
1274 break;
1275
1276 case 1:
1277 {
1278 short x = bfd_get_16 (abfd, data);
1279 DOIT (x);
1280 bfd_put_16 (abfd, (bfd_vma) x, data);
1281 }
1282 break;
1283 case 2:
1284 {
1285 long x = bfd_get_32 (abfd, data);
1286 DOIT (x);
1287 bfd_put_32 (abfd, (bfd_vma) x, data);
1288 }
1289 break;
1290 case -2:
1291 {
1292 long x = bfd_get_32 (abfd, data);
1293 relocation = -relocation;
1294 DOIT (x);
1295 bfd_put_32 (abfd, (bfd_vma) x, data);
1296 }
1297 break;
1298
1299 case 3:
1300 /* Do nothing */
1301 break;
1302
1303 case 4:
1304 {
1305 bfd_vma x = bfd_get_64 (abfd, data);
1306 DOIT (x);
1307 bfd_put_64 (abfd, x, data);
1308 }
1309 break;
1310 default:
1311 return bfd_reloc_other;
1312 }
1313
1314 return flag;
1315 }
1316
1317 /* This relocation routine is used by some of the backend linkers.
1318 They do not construct asymbol or arelent structures, so there is no
1319 reason for them to use bfd_perform_relocation. Also,
1320 bfd_perform_relocation is so hacked up it is easier to write a new
1321 function than to try to deal with it.
1322
1323 This routine does a final relocation. Whether it is useful for a
1324 relocatable link depends upon how the object format defines
1325 relocations.
1326
1327 FIXME: This routine ignores any special_function in the HOWTO,
1328 since the existing special_function values have been written for
1329 bfd_perform_relocation.
1330
1331 HOWTO is the reloc howto information.
1332 INPUT_BFD is the BFD which the reloc applies to.
1333 INPUT_SECTION is the section which the reloc applies to.
1334 CONTENTS is the contents of the section.
1335 ADDRESS is the address of the reloc within INPUT_SECTION.
1336 VALUE is the value of the symbol the reloc refers to.
1337 ADDEND is the addend of the reloc. */
1338
1339 bfd_reloc_status_type
1340 _bfd_final_link_relocate (reloc_howto_type *howto,
1341 bfd *input_bfd,
1342 asection *input_section,
1343 bfd_byte *contents,
1344 bfd_vma address,
1345 bfd_vma value,
1346 bfd_vma addend)
1347 {
1348 bfd_vma relocation;
1349
1350 /* Sanity check the address. */
1351 if (address > bfd_get_section_limit (input_bfd, input_section))
1352 return bfd_reloc_outofrange;
1353
1354 /* This function assumes that we are dealing with a basic relocation
1355 against a symbol. We want to compute the value of the symbol to
1356 relocate to. This is just VALUE, the value of the symbol, plus
1357 ADDEND, any addend associated with the reloc. */
1358 relocation = value + addend;
1359
1360 /* If the relocation is PC relative, we want to set RELOCATION to
1361 the distance between the symbol (currently in RELOCATION) and the
1362 location we are relocating. Some targets (e.g., i386-aout)
1363 arrange for the contents of the section to be the negative of the
1364 offset of the location within the section; for such targets
1365 pcrel_offset is FALSE. Other targets (e.g., m88kbcs or ELF)
1366 simply leave the contents of the section as zero; for such
1367 targets pcrel_offset is TRUE. If pcrel_offset is FALSE we do not
1368 need to subtract out the offset of the location within the
1369 section (which is just ADDRESS). */
1370 if (howto->pc_relative)
1371 {
1372 relocation -= (input_section->output_section->vma
1373 + input_section->output_offset);
1374 if (howto->pcrel_offset)
1375 relocation -= address;
1376 }
1377
1378 return _bfd_relocate_contents (howto, input_bfd, relocation,
1379 contents + address);
1380 }
1381
1382 /* Relocate a given location using a given value and howto. */
1383
1384 bfd_reloc_status_type
1385 _bfd_relocate_contents (reloc_howto_type *howto,
1386 bfd *input_bfd,
1387 bfd_vma relocation,
1388 bfd_byte *location)
1389 {
1390 int size;
1391 bfd_vma x = 0;
1392 bfd_reloc_status_type flag;
1393 unsigned int rightshift = howto->rightshift;
1394 unsigned int bitpos = howto->bitpos;
1395
1396 /* If the size is negative, negate RELOCATION. This isn't very
1397 general. */
1398 if (howto->size < 0)
1399 relocation = -relocation;
1400
1401 /* Get the value we are going to relocate. */
1402 size = bfd_get_reloc_size (howto);
1403 switch (size)
1404 {
1405 default:
1406 case 0:
1407 abort ();
1408 case 1:
1409 x = bfd_get_8 (input_bfd, location);
1410 break;
1411 case 2:
1412 x = bfd_get_16 (input_bfd, location);
1413 break;
1414 case 4:
1415 x = bfd_get_32 (input_bfd, location);
1416 break;
1417 case 8:
1418 #ifdef BFD64
1419 x = bfd_get_64 (input_bfd, location);
1420 #else
1421 abort ();
1422 #endif
1423 break;
1424 }
1425
1426 /* Check for overflow. FIXME: We may drop bits during the addition
1427 which we don't check for. We must either check at every single
1428 operation, which would be tedious, or we must do the computations
1429 in a type larger than bfd_vma, which would be inefficient. */
1430 flag = bfd_reloc_ok;
1431 if (howto->complain_on_overflow != complain_overflow_dont)
1432 {
1433 bfd_vma addrmask, fieldmask, signmask, ss;
1434 bfd_vma a, b, sum;
1435
1436 /* Get the values to be added together. For signed and unsigned
1437 relocations, we assume that all values should be truncated to
1438 the size of an address. For bitfields, all the bits matter.
1439 See also bfd_check_overflow. */
1440 fieldmask = N_ONES (howto->bitsize);
1441 addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask;
1442 a = relocation;
1443 b = x & howto->src_mask;
1444
1445 switch (howto->complain_on_overflow)
1446 {
1447 case complain_overflow_signed:
1448 a = (a & addrmask) >> rightshift;
1449
1450 /* If any sign bits are set, all sign bits must be set.
1451 That is, A must be a valid negative address after
1452 shifting. */
1453 signmask = ~ (fieldmask >> 1);
1454 ss = a & signmask;
1455 if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
1456 flag = bfd_reloc_overflow;
1457
1458 /* We only need this next bit of code if the sign bit of B
1459 is below the sign bit of A. This would only happen if
1460 SRC_MASK had fewer bits than BITSIZE. Note that if
1461 SRC_MASK has more bits than BITSIZE, we can get into
1462 trouble; we would need to verify that B is in range, as
1463 we do for A above. */
1464 signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1465
1466 /* Set all the bits above the sign bit. */
1467 b = (b ^ signmask) - signmask;
1468
1469 b = (b & addrmask) >> bitpos;
1470
1471 /* Now we can do the addition. */
1472 sum = a + b;
1473
1474 /* See if the result has the correct sign. Bits above the
1475 sign bit are junk now; ignore them. If the sum is
1476 positive, make sure we did not have all negative inputs;
1477 if the sum is negative, make sure we did not have all
1478 positive inputs. The test below looks only at the sign
1479 bits, and it really just
1480 SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
1481 */
1482 signmask = (fieldmask >> 1) + 1;
1483 if (((~ (a ^ b)) & (a ^ sum)) & signmask)
1484 flag = bfd_reloc_overflow;
1485
1486 break;
1487
1488 case complain_overflow_unsigned:
1489 /* Checking for an unsigned overflow is relatively easy:
1490 trim the addresses and add, and trim the result as well.
1491 Overflow is normally indicated when the result does not
1492 fit in the field. However, we also need to consider the
1493 case when, e.g., fieldmask is 0x7fffffff or smaller, an
1494 input is 0x80000000, and bfd_vma is only 32 bits; then we
1495 will get sum == 0, but there is an overflow, since the
1496 inputs did not fit in the field. Instead of doing a
1497 separate test, we can check for this by or-ing in the
1498 operands when testing for the sum overflowing its final
1499 field. */
1500 a = (a & addrmask) >> rightshift;
1501 b = (b & addrmask) >> bitpos;
1502 sum = (a + b) & addrmask;
1503 if ((a | b | sum) & ~ fieldmask)
1504 flag = bfd_reloc_overflow;
1505
1506 break;
1507
1508 case complain_overflow_bitfield:
1509 /* Much like the signed check, but for a field one bit
1510 wider, and no trimming inputs with addrmask. We allow a
1511 bitfield to represent numbers in the range -2**n to
1512 2**n-1, where n is the number of bits in the field.
1513 Note that when bfd_vma is 32 bits, a 32-bit reloc can't
1514 overflow, which is exactly what we want. */
1515 a >>= rightshift;
1516
1517 signmask = ~ fieldmask;
1518 ss = a & signmask;
1519 if (ss != 0 && ss != (((bfd_vma) -1 >> rightshift) & signmask))
1520 flag = bfd_reloc_overflow;
1521
1522 signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1523 b = (b ^ signmask) - signmask;
1524
1525 b >>= bitpos;
1526
1527 sum = a + b;
1528
1529 /* We mask with addrmask here to explicitly allow an address
1530 wrap-around. The Linux kernel relies on it, and it is
1531 the only way to write assembler code which can run when
1532 loaded at a location 0x80000000 away from the location at
1533 which it is linked. */
1534 signmask = fieldmask + 1;
1535 if (((~ (a ^ b)) & (a ^ sum)) & signmask & addrmask)
1536 flag = bfd_reloc_overflow;
1537
1538 break;
1539
1540 default:
1541 abort ();
1542 }
1543 }
1544
1545 /* Put RELOCATION in the right bits. */
1546 relocation >>= (bfd_vma) rightshift;
1547 relocation <<= (bfd_vma) bitpos;
1548
1549 /* Add RELOCATION to the right bits of X. */
1550 x = ((x & ~howto->dst_mask)
1551 | (((x & howto->src_mask) + relocation) & howto->dst_mask));
1552
1553 /* Put the relocated value back in the object file. */
1554 switch (size)
1555 {
1556 default:
1557 case 0:
1558 abort ();
1559 case 1:
1560 bfd_put_8 (input_bfd, x, location);
1561 break;
1562 case 2:
1563 bfd_put_16 (input_bfd, x, location);
1564 break;
1565 case 4:
1566 bfd_put_32 (input_bfd, x, location);
1567 break;
1568 case 8:
1569 #ifdef BFD64
1570 bfd_put_64 (input_bfd, x, location);
1571 #else
1572 abort ();
1573 #endif
1574 break;
1575 }
1576
1577 return flag;
1578 }
1579
1580 /*
1581 DOCDD
1582 INODE
1583 howto manager, , typedef arelent, Relocations
1584
1585 SECTION
1586 The howto manager
1587
1588 When an application wants to create a relocation, but doesn't
1589 know what the target machine might call it, it can find out by
1590 using this bit of code.
1591
1592 */
1593
1594 /*
1595 TYPEDEF
1596 bfd_reloc_code_type
1597
1598 DESCRIPTION
1599 The insides of a reloc code. The idea is that, eventually, there
1600 will be one enumerator for every type of relocation we ever do.
1601 Pass one of these values to <<bfd_reloc_type_lookup>>, and it'll
1602 return a howto pointer.
1603
1604 This does mean that the application must determine the correct
1605 enumerator value; you can't get a howto pointer from a random set
1606 of attributes.
1607
1608 SENUM
1609 bfd_reloc_code_real
1610
1611 ENUM
1612 BFD_RELOC_64
1613 ENUMX
1614 BFD_RELOC_32
1615 ENUMX
1616 BFD_RELOC_26
1617 ENUMX
1618 BFD_RELOC_24
1619 ENUMX
1620 BFD_RELOC_16
1621 ENUMX
1622 BFD_RELOC_14
1623 ENUMX
1624 BFD_RELOC_8
1625 ENUMDOC
1626 Basic absolute relocations of N bits.
1627
1628 ENUM
1629 BFD_RELOC_64_PCREL
1630 ENUMX
1631 BFD_RELOC_32_PCREL
1632 ENUMX
1633 BFD_RELOC_24_PCREL
1634 ENUMX
1635 BFD_RELOC_16_PCREL
1636 ENUMX
1637 BFD_RELOC_12_PCREL
1638 ENUMX
1639 BFD_RELOC_8_PCREL
1640 ENUMDOC
1641 PC-relative relocations. Sometimes these are relative to the address
1642 of the relocation itself; sometimes they are relative to the start of
1643 the section containing the relocation. It depends on the specific target.
1644
1645 The 24-bit relocation is used in some Intel 960 configurations.
1646
1647 ENUM
1648 BFD_RELOC_32_SECREL
1649 ENUMDOC
1650 Section relative relocations. Some targets need this for DWARF2.
1651
1652 ENUM
1653 BFD_RELOC_32_GOT_PCREL
1654 ENUMX
1655 BFD_RELOC_16_GOT_PCREL
1656 ENUMX
1657 BFD_RELOC_8_GOT_PCREL
1658 ENUMX
1659 BFD_RELOC_32_GOTOFF
1660 ENUMX
1661 BFD_RELOC_16_GOTOFF
1662 ENUMX
1663 BFD_RELOC_LO16_GOTOFF
1664 ENUMX
1665 BFD_RELOC_HI16_GOTOFF
1666 ENUMX
1667 BFD_RELOC_HI16_S_GOTOFF
1668 ENUMX
1669 BFD_RELOC_8_GOTOFF
1670 ENUMX
1671 BFD_RELOC_64_PLT_PCREL
1672 ENUMX
1673 BFD_RELOC_32_PLT_PCREL
1674 ENUMX
1675 BFD_RELOC_24_PLT_PCREL
1676 ENUMX
1677 BFD_RELOC_16_PLT_PCREL
1678 ENUMX
1679 BFD_RELOC_8_PLT_PCREL
1680 ENUMX
1681 BFD_RELOC_64_PLTOFF
1682 ENUMX
1683 BFD_RELOC_32_PLTOFF
1684 ENUMX
1685 BFD_RELOC_16_PLTOFF
1686 ENUMX
1687 BFD_RELOC_LO16_PLTOFF
1688 ENUMX
1689 BFD_RELOC_HI16_PLTOFF
1690 ENUMX
1691 BFD_RELOC_HI16_S_PLTOFF
1692 ENUMX
1693 BFD_RELOC_8_PLTOFF
1694 ENUMDOC
1695 For ELF.
1696
1697 ENUM
1698 BFD_RELOC_68K_GLOB_DAT
1699 ENUMX
1700 BFD_RELOC_68K_JMP_SLOT
1701 ENUMX
1702 BFD_RELOC_68K_RELATIVE
1703 ENUMDOC
1704 Relocations used by 68K ELF.
1705
1706 ENUM
1707 BFD_RELOC_32_BASEREL
1708 ENUMX
1709 BFD_RELOC_16_BASEREL
1710 ENUMX
1711 BFD_RELOC_LO16_BASEREL
1712 ENUMX
1713 BFD_RELOC_HI16_BASEREL
1714 ENUMX
1715 BFD_RELOC_HI16_S_BASEREL
1716 ENUMX
1717 BFD_RELOC_8_BASEREL
1718 ENUMX
1719 BFD_RELOC_RVA
1720 ENUMDOC
1721 Linkage-table relative.
1722
1723 ENUM
1724 BFD_RELOC_8_FFnn
1725 ENUMDOC
1726 Absolute 8-bit relocation, but used to form an address like 0xFFnn.
1727
1728 ENUM
1729 BFD_RELOC_32_PCREL_S2
1730 ENUMX
1731 BFD_RELOC_16_PCREL_S2
1732 ENUMX
1733 BFD_RELOC_23_PCREL_S2
1734 ENUMDOC
1735 These PC-relative relocations are stored as word displacements --
1736 i.e., byte displacements shifted right two bits. The 30-bit word
1737 displacement (<<32_PCREL_S2>> -- 32 bits, shifted 2) is used on the
1738 SPARC. (SPARC tools generally refer to this as <<WDISP30>>.) The
1739 signed 16-bit displacement is used on the MIPS, and the 23-bit
1740 displacement is used on the Alpha.
1741
1742 ENUM
1743 BFD_RELOC_HI22
1744 ENUMX
1745 BFD_RELOC_LO10
1746 ENUMDOC
1747 High 22 bits and low 10 bits of 32-bit value, placed into lower bits of
1748 the target word. These are used on the SPARC.
1749
1750 ENUM
1751 BFD_RELOC_GPREL16
1752 ENUMX
1753 BFD_RELOC_GPREL32
1754 ENUMDOC
1755 For systems that allocate a Global Pointer register, these are
1756 displacements off that register. These relocation types are
1757 handled specially, because the value the register will have is
1758 decided relatively late.
1759
1760 ENUM
1761 BFD_RELOC_I960_CALLJ
1762 ENUMDOC
1763 Reloc types used for i960/b.out.
1764
1765 ENUM
1766 BFD_RELOC_NONE
1767 ENUMX
1768 BFD_RELOC_SPARC_WDISP22
1769 ENUMX
1770 BFD_RELOC_SPARC22
1771 ENUMX
1772 BFD_RELOC_SPARC13
1773 ENUMX
1774 BFD_RELOC_SPARC_GOT10
1775 ENUMX
1776 BFD_RELOC_SPARC_GOT13
1777 ENUMX
1778 BFD_RELOC_SPARC_GOT22
1779 ENUMX
1780 BFD_RELOC_SPARC_PC10
1781 ENUMX
1782 BFD_RELOC_SPARC_PC22
1783 ENUMX
1784 BFD_RELOC_SPARC_WPLT30
1785 ENUMX
1786 BFD_RELOC_SPARC_COPY
1787 ENUMX
1788 BFD_RELOC_SPARC_GLOB_DAT
1789 ENUMX
1790 BFD_RELOC_SPARC_JMP_SLOT
1791 ENUMX
1792 BFD_RELOC_SPARC_RELATIVE
1793 ENUMX
1794 BFD_RELOC_SPARC_UA16
1795 ENUMX
1796 BFD_RELOC_SPARC_UA32
1797 ENUMX
1798 BFD_RELOC_SPARC_UA64
1799 ENUMDOC
1800 SPARC ELF relocations. There is probably some overlap with other
1801 relocation types already defined.
1802
1803 ENUM
1804 BFD_RELOC_SPARC_BASE13
1805 ENUMX
1806 BFD_RELOC_SPARC_BASE22
1807 ENUMDOC
1808 I think these are specific to SPARC a.out (e.g., Sun 4).
1809
1810 ENUMEQ
1811 BFD_RELOC_SPARC_64
1812 BFD_RELOC_64
1813 ENUMX
1814 BFD_RELOC_SPARC_10
1815 ENUMX
1816 BFD_RELOC_SPARC_11
1817 ENUMX
1818 BFD_RELOC_SPARC_OLO10
1819 ENUMX
1820 BFD_RELOC_SPARC_HH22
1821 ENUMX
1822 BFD_RELOC_SPARC_HM10
1823 ENUMX
1824 BFD_RELOC_SPARC_LM22
1825 ENUMX
1826 BFD_RELOC_SPARC_PC_HH22
1827 ENUMX
1828 BFD_RELOC_SPARC_PC_HM10
1829 ENUMX
1830 BFD_RELOC_SPARC_PC_LM22
1831 ENUMX
1832 BFD_RELOC_SPARC_WDISP16
1833 ENUMX
1834 BFD_RELOC_SPARC_WDISP19
1835 ENUMX
1836 BFD_RELOC_SPARC_7
1837 ENUMX
1838 BFD_RELOC_SPARC_6
1839 ENUMX
1840 BFD_RELOC_SPARC_5
1841 ENUMEQX
1842 BFD_RELOC_SPARC_DISP64
1843 BFD_RELOC_64_PCREL
1844 ENUMX
1845 BFD_RELOC_SPARC_PLT32
1846 ENUMX
1847 BFD_RELOC_SPARC_PLT64
1848 ENUMX
1849 BFD_RELOC_SPARC_HIX22
1850 ENUMX
1851 BFD_RELOC_SPARC_LOX10
1852 ENUMX
1853 BFD_RELOC_SPARC_H44
1854 ENUMX
1855 BFD_RELOC_SPARC_M44
1856 ENUMX
1857 BFD_RELOC_SPARC_L44
1858 ENUMX
1859 BFD_RELOC_SPARC_REGISTER
1860 ENUMDOC
1861 SPARC64 relocations
1862
1863 ENUM
1864 BFD_RELOC_SPARC_REV32
1865 ENUMDOC
1866 SPARC little endian relocation
1867 ENUM
1868 BFD_RELOC_SPARC_TLS_GD_HI22
1869 ENUMX
1870 BFD_RELOC_SPARC_TLS_GD_LO10
1871 ENUMX
1872 BFD_RELOC_SPARC_TLS_GD_ADD
1873 ENUMX
1874 BFD_RELOC_SPARC_TLS_GD_CALL
1875 ENUMX
1876 BFD_RELOC_SPARC_TLS_LDM_HI22
1877 ENUMX
1878 BFD_RELOC_SPARC_TLS_LDM_LO10
1879 ENUMX
1880 BFD_RELOC_SPARC_TLS_LDM_ADD
1881 ENUMX
1882 BFD_RELOC_SPARC_TLS_LDM_CALL
1883 ENUMX
1884 BFD_RELOC_SPARC_TLS_LDO_HIX22
1885 ENUMX
1886 BFD_RELOC_SPARC_TLS_LDO_LOX10
1887 ENUMX
1888 BFD_RELOC_SPARC_TLS_LDO_ADD
1889 ENUMX
1890 BFD_RELOC_SPARC_TLS_IE_HI22
1891 ENUMX
1892 BFD_RELOC_SPARC_TLS_IE_LO10
1893 ENUMX
1894 BFD_RELOC_SPARC_TLS_IE_LD
1895 ENUMX
1896 BFD_RELOC_SPARC_TLS_IE_LDX
1897 ENUMX
1898 BFD_RELOC_SPARC_TLS_IE_ADD
1899 ENUMX
1900 BFD_RELOC_SPARC_TLS_LE_HIX22
1901 ENUMX
1902 BFD_RELOC_SPARC_TLS_LE_LOX10
1903 ENUMX
1904 BFD_RELOC_SPARC_TLS_DTPMOD32
1905 ENUMX
1906 BFD_RELOC_SPARC_TLS_DTPMOD64
1907 ENUMX
1908 BFD_RELOC_SPARC_TLS_DTPOFF32
1909 ENUMX
1910 BFD_RELOC_SPARC_TLS_DTPOFF64
1911 ENUMX
1912 BFD_RELOC_SPARC_TLS_TPOFF32
1913 ENUMX
1914 BFD_RELOC_SPARC_TLS_TPOFF64
1915 ENUMDOC
1916 SPARC TLS relocations
1917
1918 ENUM
1919 BFD_RELOC_ALPHA_GPDISP_HI16
1920 ENUMDOC
1921 Alpha ECOFF and ELF relocations. Some of these treat the symbol or
1922 "addend" in some special way.
1923 For GPDISP_HI16 ("gpdisp") relocations, the symbol is ignored when
1924 writing; when reading, it will be the absolute section symbol. The
1925 addend is the displacement in bytes of the "lda" instruction from
1926 the "ldah" instruction (which is at the address of this reloc).
1927 ENUM
1928 BFD_RELOC_ALPHA_GPDISP_LO16
1929 ENUMDOC
1930 For GPDISP_LO16 ("ignore") relocations, the symbol is handled as
1931 with GPDISP_HI16 relocs. The addend is ignored when writing the
1932 relocations out, and is filled in with the file's GP value on
1933 reading, for convenience.
1934
1935 ENUM
1936 BFD_RELOC_ALPHA_GPDISP
1937 ENUMDOC
1938 The ELF GPDISP relocation is exactly the same as the GPDISP_HI16
1939 relocation except that there is no accompanying GPDISP_LO16
1940 relocation.
1941
1942 ENUM
1943 BFD_RELOC_ALPHA_LITERAL
1944 ENUMX
1945 BFD_RELOC_ALPHA_ELF_LITERAL
1946 ENUMX
1947 BFD_RELOC_ALPHA_LITUSE
1948 ENUMDOC
1949 The Alpha LITERAL/LITUSE relocs are produced by a symbol reference;
1950 the assembler turns it into a LDQ instruction to load the address of
1951 the symbol, and then fills in a register in the real instruction.
1952
1953 The LITERAL reloc, at the LDQ instruction, refers to the .lita
1954 section symbol. The addend is ignored when writing, but is filled
1955 in with the file's GP value on reading, for convenience, as with the
1956 GPDISP_LO16 reloc.
1957
1958 The ELF_LITERAL reloc is somewhere between 16_GOTOFF and GPDISP_LO16.
1959 It should refer to the symbol to be referenced, as with 16_GOTOFF,
1960 but it generates output not based on the position within the .got
1961 section, but relative to the GP value chosen for the file during the
1962 final link stage.
1963
1964 The LITUSE reloc, on the instruction using the loaded address, gives
1965 information to the linker that it might be able to use to optimize
1966 away some literal section references. The symbol is ignored (read
1967 as the absolute section symbol), and the "addend" indicates the type
1968 of instruction using the register:
1969 1 - "memory" fmt insn
1970 2 - byte-manipulation (byte offset reg)
1971 3 - jsr (target of branch)
1972
1973 ENUM
1974 BFD_RELOC_ALPHA_HINT
1975 ENUMDOC
1976 The HINT relocation indicates a value that should be filled into the
1977 "hint" field of a jmp/jsr/ret instruction, for possible branch-
1978 prediction logic which may be provided on some processors.
1979
1980 ENUM
1981 BFD_RELOC_ALPHA_LINKAGE
1982 ENUMDOC
1983 The LINKAGE relocation outputs a linkage pair in the object file,
1984 which is filled by the linker.
1985
1986 ENUM
1987 BFD_RELOC_ALPHA_CODEADDR
1988 ENUMDOC
1989 The CODEADDR relocation outputs a STO_CA in the object file,
1990 which is filled by the linker.
1991
1992 ENUM
1993 BFD_RELOC_ALPHA_GPREL_HI16
1994 ENUMX
1995 BFD_RELOC_ALPHA_GPREL_LO16
1996 ENUMDOC
1997 The GPREL_HI/LO relocations together form a 32-bit offset from the
1998 GP register.
1999
2000 ENUM
2001 BFD_RELOC_ALPHA_BRSGP
2002 ENUMDOC
2003 Like BFD_RELOC_23_PCREL_S2, except that the source and target must
2004 share a common GP, and the target address is adjusted for
2005 STO_ALPHA_STD_GPLOAD.
2006
2007 ENUM
2008 BFD_RELOC_ALPHA_TLSGD
2009 ENUMX
2010 BFD_RELOC_ALPHA_TLSLDM
2011 ENUMX
2012 BFD_RELOC_ALPHA_DTPMOD64
2013 ENUMX
2014 BFD_RELOC_ALPHA_GOTDTPREL16
2015 ENUMX
2016 BFD_RELOC_ALPHA_DTPREL64
2017 ENUMX
2018 BFD_RELOC_ALPHA_DTPREL_HI16
2019 ENUMX
2020 BFD_RELOC_ALPHA_DTPREL_LO16
2021 ENUMX
2022 BFD_RELOC_ALPHA_DTPREL16
2023 ENUMX
2024 BFD_RELOC_ALPHA_GOTTPREL16
2025 ENUMX
2026 BFD_RELOC_ALPHA_TPREL64
2027 ENUMX
2028 BFD_RELOC_ALPHA_TPREL_HI16
2029 ENUMX
2030 BFD_RELOC_ALPHA_TPREL_LO16
2031 ENUMX
2032 BFD_RELOC_ALPHA_TPREL16
2033 ENUMDOC
2034 Alpha thread-local storage relocations.
2035
2036 ENUM
2037 BFD_RELOC_MIPS_JMP
2038 ENUMDOC
2039 Bits 27..2 of the relocation address shifted right 2 bits;
2040 simple reloc otherwise.
2041
2042 ENUM
2043 BFD_RELOC_MIPS16_JMP
2044 ENUMDOC
2045 The MIPS16 jump instruction.
2046
2047 ENUM
2048 BFD_RELOC_MIPS16_GPREL
2049 ENUMDOC
2050 MIPS16 GP relative reloc.
2051
2052 ENUM
2053 BFD_RELOC_HI16
2054 ENUMDOC
2055 High 16 bits of 32-bit value; simple reloc.
2056 ENUM
2057 BFD_RELOC_HI16_S
2058 ENUMDOC
2059 High 16 bits of 32-bit value but the low 16 bits will be sign
2060 extended and added to form the final result. If the low 16
2061 bits form a negative number, we need to add one to the high value
2062 to compensate for the borrow when the low bits are added.
2063 ENUM
2064 BFD_RELOC_LO16
2065 ENUMDOC
2066 Low 16 bits.
2067
2068 ENUM
2069 BFD_RELOC_MIPS_LITERAL
2070 ENUMDOC
2071 Relocation against a MIPS literal section.
2072
2073 ENUM
2074 BFD_RELOC_MIPS_GOT16
2075 ENUMX
2076 BFD_RELOC_MIPS_CALL16
2077 ENUMX
2078 BFD_RELOC_MIPS_GOT_HI16
2079 ENUMX
2080 BFD_RELOC_MIPS_GOT_LO16
2081 ENUMX
2082 BFD_RELOC_MIPS_CALL_HI16
2083 ENUMX
2084 BFD_RELOC_MIPS_CALL_LO16
2085 ENUMX
2086 BFD_RELOC_MIPS_SUB
2087 ENUMX
2088 BFD_RELOC_MIPS_GOT_PAGE
2089 ENUMX
2090 BFD_RELOC_MIPS_GOT_OFST
2091 ENUMX
2092 BFD_RELOC_MIPS_GOT_DISP
2093 ENUMX
2094 BFD_RELOC_MIPS_SHIFT5
2095 ENUMX
2096 BFD_RELOC_MIPS_SHIFT6
2097 ENUMX
2098 BFD_RELOC_MIPS_INSERT_A
2099 ENUMX
2100 BFD_RELOC_MIPS_INSERT_B
2101 ENUMX
2102 BFD_RELOC_MIPS_DELETE
2103 ENUMX
2104 BFD_RELOC_MIPS_HIGHEST
2105 ENUMX
2106 BFD_RELOC_MIPS_HIGHER
2107 ENUMX
2108 BFD_RELOC_MIPS_SCN_DISP
2109 ENUMX
2110 BFD_RELOC_MIPS_REL16
2111 ENUMX
2112 BFD_RELOC_MIPS_RELGOT
2113 ENUMX
2114 BFD_RELOC_MIPS_JALR
2115 ENUMDOC
2116 MIPS ELF relocations.
2117 COMMENT
2118
2119 ENUM
2120 BFD_RELOC_FRV_LABEL16
2121 ENUMX
2122 BFD_RELOC_FRV_LABEL24
2123 ENUMX
2124 BFD_RELOC_FRV_LO16
2125 ENUMX
2126 BFD_RELOC_FRV_HI16
2127 ENUMX
2128 BFD_RELOC_FRV_GPREL12
2129 ENUMX
2130 BFD_RELOC_FRV_GPRELU12
2131 ENUMX
2132 BFD_RELOC_FRV_GPREL32
2133 ENUMX
2134 BFD_RELOC_FRV_GPRELHI
2135 ENUMX
2136 BFD_RELOC_FRV_GPRELLO
2137 ENUMX
2138 BFD_RELOC_FRV_GOT12
2139 ENUMX
2140 BFD_RELOC_FRV_GOTHI
2141 ENUMX
2142 BFD_RELOC_FRV_GOTLO
2143 ENUMX
2144 BFD_RELOC_FRV_FUNCDESC
2145 ENUMX
2146 BFD_RELOC_FRV_FUNCDESC_GOT12
2147 ENUMX
2148 BFD_RELOC_FRV_FUNCDESC_GOTHI
2149 ENUMX
2150 BFD_RELOC_FRV_FUNCDESC_GOTLO
2151 ENUMX
2152 BFD_RELOC_FRV_FUNCDESC_VALUE
2153 ENUMX
2154 BFD_RELOC_FRV_FUNCDESC_GOTOFF12
2155 ENUMX
2156 BFD_RELOC_FRV_FUNCDESC_GOTOFFHI
2157 ENUMX
2158 BFD_RELOC_FRV_FUNCDESC_GOTOFFLO
2159 ENUMX
2160 BFD_RELOC_FRV_GOTOFF12
2161 ENUMX
2162 BFD_RELOC_FRV_GOTOFFHI
2163 ENUMX
2164 BFD_RELOC_FRV_GOTOFFLO
2165 ENUMDOC
2166 Fujitsu Frv Relocations.
2167 COMMENT
2168
2169 ENUM
2170 BFD_RELOC_MN10300_GOTOFF24
2171 ENUMDOC
2172 This is a 24bit GOT-relative reloc for the mn10300.
2173 ENUM
2174 BFD_RELOC_MN10300_GOT32
2175 ENUMDOC
2176 This is a 32bit GOT-relative reloc for the mn10300, offset by two bytes
2177 in the instruction.
2178 ENUM
2179 BFD_RELOC_MN10300_GOT24
2180 ENUMDOC
2181 This is a 24bit GOT-relative reloc for the mn10300, offset by two bytes
2182 in the instruction.
2183 ENUM
2184 BFD_RELOC_MN10300_GOT16
2185 ENUMDOC
2186 This is a 16bit GOT-relative reloc for the mn10300, offset by two bytes
2187 in the instruction.
2188 ENUM
2189 BFD_RELOC_MN10300_COPY
2190 ENUMDOC
2191 Copy symbol at runtime.
2192 ENUM
2193 BFD_RELOC_MN10300_GLOB_DAT
2194 ENUMDOC
2195 Create GOT entry.
2196 ENUM
2197 BFD_RELOC_MN10300_JMP_SLOT
2198 ENUMDOC
2199 Create PLT entry.
2200 ENUM
2201 BFD_RELOC_MN10300_RELATIVE
2202 ENUMDOC
2203 Adjust by program base.
2204 COMMENT
2205
2206 ENUM
2207 BFD_RELOC_386_GOT32
2208 ENUMX
2209 BFD_RELOC_386_PLT32
2210 ENUMX
2211 BFD_RELOC_386_COPY
2212 ENUMX
2213 BFD_RELOC_386_GLOB_DAT
2214 ENUMX
2215 BFD_RELOC_386_JUMP_SLOT
2216 ENUMX
2217 BFD_RELOC_386_RELATIVE
2218 ENUMX
2219 BFD_RELOC_386_GOTOFF
2220 ENUMX
2221 BFD_RELOC_386_GOTPC
2222 ENUMX
2223 BFD_RELOC_386_TLS_TPOFF
2224 ENUMX
2225 BFD_RELOC_386_TLS_IE
2226 ENUMX
2227 BFD_RELOC_386_TLS_GOTIE
2228 ENUMX
2229 BFD_RELOC_386_TLS_LE
2230 ENUMX
2231 BFD_RELOC_386_TLS_GD
2232 ENUMX
2233 BFD_RELOC_386_TLS_LDM
2234 ENUMX
2235 BFD_RELOC_386_TLS_LDO_32
2236 ENUMX
2237 BFD_RELOC_386_TLS_IE_32
2238 ENUMX
2239 BFD_RELOC_386_TLS_LE_32
2240 ENUMX
2241 BFD_RELOC_386_TLS_DTPMOD32
2242 ENUMX
2243 BFD_RELOC_386_TLS_DTPOFF32
2244 ENUMX
2245 BFD_RELOC_386_TLS_TPOFF32
2246 ENUMDOC
2247 i386/elf relocations
2248
2249 ENUM
2250 BFD_RELOC_X86_64_GOT32
2251 ENUMX
2252 BFD_RELOC_X86_64_PLT32
2253 ENUMX
2254 BFD_RELOC_X86_64_COPY
2255 ENUMX
2256 BFD_RELOC_X86_64_GLOB_DAT
2257 ENUMX
2258 BFD_RELOC_X86_64_JUMP_SLOT
2259 ENUMX
2260 BFD_RELOC_X86_64_RELATIVE
2261 ENUMX
2262 BFD_RELOC_X86_64_GOTPCREL
2263 ENUMX
2264 BFD_RELOC_X86_64_32S
2265 ENUMX
2266 BFD_RELOC_X86_64_DTPMOD64
2267 ENUMX
2268 BFD_RELOC_X86_64_DTPOFF64
2269 ENUMX
2270 BFD_RELOC_X86_64_TPOFF64
2271 ENUMX
2272 BFD_RELOC_X86_64_TLSGD
2273 ENUMX
2274 BFD_RELOC_X86_64_TLSLD
2275 ENUMX
2276 BFD_RELOC_X86_64_DTPOFF32
2277 ENUMX
2278 BFD_RELOC_X86_64_GOTTPOFF
2279 ENUMX
2280 BFD_RELOC_X86_64_TPOFF32
2281 ENUMDOC
2282 x86-64/elf relocations
2283
2284 ENUM
2285 BFD_RELOC_NS32K_IMM_8
2286 ENUMX
2287 BFD_RELOC_NS32K_IMM_16
2288 ENUMX
2289 BFD_RELOC_NS32K_IMM_32
2290 ENUMX
2291 BFD_RELOC_NS32K_IMM_8_PCREL
2292 ENUMX
2293 BFD_RELOC_NS32K_IMM_16_PCREL
2294 ENUMX
2295 BFD_RELOC_NS32K_IMM_32_PCREL
2296 ENUMX
2297 BFD_RELOC_NS32K_DISP_8
2298 ENUMX
2299 BFD_RELOC_NS32K_DISP_16
2300 ENUMX
2301 BFD_RELOC_NS32K_DISP_32
2302 ENUMX
2303 BFD_RELOC_NS32K_DISP_8_PCREL
2304 ENUMX
2305 BFD_RELOC_NS32K_DISP_16_PCREL
2306 ENUMX
2307 BFD_RELOC_NS32K_DISP_32_PCREL
2308 ENUMDOC
2309 ns32k relocations
2310
2311 ENUM
2312 BFD_RELOC_PDP11_DISP_8_PCREL
2313 ENUMX
2314 BFD_RELOC_PDP11_DISP_6_PCREL
2315 ENUMDOC
2316 PDP11 relocations
2317
2318 ENUM
2319 BFD_RELOC_PJ_CODE_HI16
2320 ENUMX
2321 BFD_RELOC_PJ_CODE_LO16
2322 ENUMX
2323 BFD_RELOC_PJ_CODE_DIR16
2324 ENUMX
2325 BFD_RELOC_PJ_CODE_DIR32
2326 ENUMX
2327 BFD_RELOC_PJ_CODE_REL16
2328 ENUMX
2329 BFD_RELOC_PJ_CODE_REL32
2330 ENUMDOC
2331 Picojava relocs. Not all of these appear in object files.
2332
2333 ENUM
2334 BFD_RELOC_PPC_B26
2335 ENUMX
2336 BFD_RELOC_PPC_BA26
2337 ENUMX
2338 BFD_RELOC_PPC_TOC16
2339 ENUMX
2340 BFD_RELOC_PPC_B16
2341 ENUMX
2342 BFD_RELOC_PPC_B16_BRTAKEN
2343 ENUMX
2344 BFD_RELOC_PPC_B16_BRNTAKEN
2345 ENUMX
2346 BFD_RELOC_PPC_BA16
2347 ENUMX
2348 BFD_RELOC_PPC_BA16_BRTAKEN
2349 ENUMX
2350 BFD_RELOC_PPC_BA16_BRNTAKEN
2351 ENUMX
2352 BFD_RELOC_PPC_COPY
2353 ENUMX
2354 BFD_RELOC_PPC_GLOB_DAT
2355 ENUMX
2356 BFD_RELOC_PPC_JMP_SLOT
2357 ENUMX
2358 BFD_RELOC_PPC_RELATIVE
2359 ENUMX
2360 BFD_RELOC_PPC_LOCAL24PC
2361 ENUMX
2362 BFD_RELOC_PPC_EMB_NADDR32
2363 ENUMX
2364 BFD_RELOC_PPC_EMB_NADDR16
2365 ENUMX
2366 BFD_RELOC_PPC_EMB_NADDR16_LO
2367 ENUMX
2368 BFD_RELOC_PPC_EMB_NADDR16_HI
2369 ENUMX
2370 BFD_RELOC_PPC_EMB_NADDR16_HA
2371 ENUMX
2372 BFD_RELOC_PPC_EMB_SDAI16
2373 ENUMX
2374 BFD_RELOC_PPC_EMB_SDA2I16
2375 ENUMX
2376 BFD_RELOC_PPC_EMB_SDA2REL
2377 ENUMX
2378 BFD_RELOC_PPC_EMB_SDA21
2379 ENUMX
2380 BFD_RELOC_PPC_EMB_MRKREF
2381 ENUMX
2382 BFD_RELOC_PPC_EMB_RELSEC16
2383 ENUMX
2384 BFD_RELOC_PPC_EMB_RELST_LO
2385 ENUMX
2386 BFD_RELOC_PPC_EMB_RELST_HI
2387 ENUMX
2388 BFD_RELOC_PPC_EMB_RELST_HA
2389 ENUMX
2390 BFD_RELOC_PPC_EMB_BIT_FLD
2391 ENUMX
2392 BFD_RELOC_PPC_EMB_RELSDA
2393 ENUMX
2394 BFD_RELOC_PPC64_HIGHER
2395 ENUMX
2396 BFD_RELOC_PPC64_HIGHER_S
2397 ENUMX
2398 BFD_RELOC_PPC64_HIGHEST
2399 ENUMX
2400 BFD_RELOC_PPC64_HIGHEST_S
2401 ENUMX
2402 BFD_RELOC_PPC64_TOC16_LO
2403 ENUMX
2404 BFD_RELOC_PPC64_TOC16_HI
2405 ENUMX
2406 BFD_RELOC_PPC64_TOC16_HA
2407 ENUMX
2408 BFD_RELOC_PPC64_TOC
2409 ENUMX
2410 BFD_RELOC_PPC64_PLTGOT16
2411 ENUMX
2412 BFD_RELOC_PPC64_PLTGOT16_LO
2413 ENUMX
2414 BFD_RELOC_PPC64_PLTGOT16_HI
2415 ENUMX
2416 BFD_RELOC_PPC64_PLTGOT16_HA
2417 ENUMX
2418 BFD_RELOC_PPC64_ADDR16_DS
2419 ENUMX
2420 BFD_RELOC_PPC64_ADDR16_LO_DS
2421 ENUMX
2422 BFD_RELOC_PPC64_GOT16_DS
2423 ENUMX
2424 BFD_RELOC_PPC64_GOT16_LO_DS
2425 ENUMX
2426 BFD_RELOC_PPC64_PLT16_LO_DS
2427 ENUMX
2428 BFD_RELOC_PPC64_SECTOFF_DS
2429 ENUMX
2430 BFD_RELOC_PPC64_SECTOFF_LO_DS
2431 ENUMX
2432 BFD_RELOC_PPC64_TOC16_DS
2433 ENUMX
2434 BFD_RELOC_PPC64_TOC16_LO_DS
2435 ENUMX
2436 BFD_RELOC_PPC64_PLTGOT16_DS
2437 ENUMX
2438 BFD_RELOC_PPC64_PLTGOT16_LO_DS
2439 ENUMDOC
2440 Power(rs6000) and PowerPC relocations.
2441
2442 ENUM
2443 BFD_RELOC_PPC_TLS
2444 ENUMX
2445 BFD_RELOC_PPC_DTPMOD
2446 ENUMX
2447 BFD_RELOC_PPC_TPREL16
2448 ENUMX
2449 BFD_RELOC_PPC_TPREL16_LO
2450 ENUMX
2451 BFD_RELOC_PPC_TPREL16_HI
2452 ENUMX
2453 BFD_RELOC_PPC_TPREL16_HA
2454 ENUMX
2455 BFD_RELOC_PPC_TPREL
2456 ENUMX
2457 BFD_RELOC_PPC_DTPREL16
2458 ENUMX
2459 BFD_RELOC_PPC_DTPREL16_LO
2460 ENUMX
2461 BFD_RELOC_PPC_DTPREL16_HI
2462 ENUMX
2463 BFD_RELOC_PPC_DTPREL16_HA
2464 ENUMX
2465 BFD_RELOC_PPC_DTPREL
2466 ENUMX
2467 BFD_RELOC_PPC_GOT_TLSGD16
2468 ENUMX
2469 BFD_RELOC_PPC_GOT_TLSGD16_LO
2470 ENUMX
2471 BFD_RELOC_PPC_GOT_TLSGD16_HI
2472 ENUMX
2473 BFD_RELOC_PPC_GOT_TLSGD16_HA
2474 ENUMX
2475 BFD_RELOC_PPC_GOT_TLSLD16
2476 ENUMX
2477 BFD_RELOC_PPC_GOT_TLSLD16_LO
2478 ENUMX
2479 BFD_RELOC_PPC_GOT_TLSLD16_HI
2480 ENUMX
2481 BFD_RELOC_PPC_GOT_TLSLD16_HA
2482 ENUMX
2483 BFD_RELOC_PPC_GOT_TPREL16
2484 ENUMX
2485 BFD_RELOC_PPC_GOT_TPREL16_LO
2486 ENUMX
2487 BFD_RELOC_PPC_GOT_TPREL16_HI
2488 ENUMX
2489 BFD_RELOC_PPC_GOT_TPREL16_HA
2490 ENUMX
2491 BFD_RELOC_PPC_GOT_DTPREL16
2492 ENUMX
2493 BFD_RELOC_PPC_GOT_DTPREL16_LO
2494 ENUMX
2495 BFD_RELOC_PPC_GOT_DTPREL16_HI
2496 ENUMX
2497 BFD_RELOC_PPC_GOT_DTPREL16_HA
2498 ENUMX
2499 BFD_RELOC_PPC64_TPREL16_DS
2500 ENUMX
2501 BFD_RELOC_PPC64_TPREL16_LO_DS
2502 ENUMX
2503 BFD_RELOC_PPC64_TPREL16_HIGHER
2504 ENUMX
2505 BFD_RELOC_PPC64_TPREL16_HIGHERA
2506 ENUMX
2507 BFD_RELOC_PPC64_TPREL16_HIGHEST
2508 ENUMX
2509 BFD_RELOC_PPC64_TPREL16_HIGHESTA
2510 ENUMX
2511 BFD_RELOC_PPC64_DTPREL16_DS
2512 ENUMX
2513 BFD_RELOC_PPC64_DTPREL16_LO_DS
2514 ENUMX
2515 BFD_RELOC_PPC64_DTPREL16_HIGHER
2516 ENUMX
2517 BFD_RELOC_PPC64_DTPREL16_HIGHERA
2518 ENUMX
2519 BFD_RELOC_PPC64_DTPREL16_HIGHEST
2520 ENUMX
2521 BFD_RELOC_PPC64_DTPREL16_HIGHESTA
2522 ENUMDOC
2523 PowerPC and PowerPC64 thread-local storage relocations.
2524
2525 ENUM
2526 BFD_RELOC_I370_D12
2527 ENUMDOC
2528 IBM 370/390 relocations
2529
2530 ENUM
2531 BFD_RELOC_CTOR
2532 ENUMDOC
2533 The type of reloc used to build a constructor table - at the moment
2534 probably a 32 bit wide absolute relocation, but the target can choose.
2535 It generally does map to one of the other relocation types.
2536
2537 ENUM
2538 BFD_RELOC_ARM_PCREL_BRANCH
2539 ENUMDOC
2540 ARM 26 bit pc-relative branch. The lowest two bits must be zero and are
2541 not stored in the instruction.
2542 ENUM
2543 BFD_RELOC_ARM_PCREL_BLX
2544 ENUMDOC
2545 ARM 26 bit pc-relative branch. The lowest bit must be zero and is
2546 not stored in the instruction. The 2nd lowest bit comes from a 1 bit
2547 field in the instruction.
2548 ENUM
2549 BFD_RELOC_THUMB_PCREL_BLX
2550 ENUMDOC
2551 Thumb 22 bit pc-relative branch. The lowest bit must be zero and is
2552 not stored in the instruction. The 2nd lowest bit comes from a 1 bit
2553 field in the instruction.
2554 ENUM
2555 BFD_RELOC_ARM_IMMEDIATE
2556 ENUMX
2557 BFD_RELOC_ARM_ADRL_IMMEDIATE
2558 ENUMX
2559 BFD_RELOC_ARM_OFFSET_IMM
2560 ENUMX
2561 BFD_RELOC_ARM_SHIFT_IMM
2562 ENUMX
2563 BFD_RELOC_ARM_SWI
2564 ENUMX
2565 BFD_RELOC_ARM_MULTI
2566 ENUMX
2567 BFD_RELOC_ARM_CP_OFF_IMM
2568 ENUMX
2569 BFD_RELOC_ARM_CP_OFF_IMM_S2
2570 ENUMX
2571 BFD_RELOC_ARM_ADR_IMM
2572 ENUMX
2573 BFD_RELOC_ARM_LDR_IMM
2574 ENUMX
2575 BFD_RELOC_ARM_LITERAL
2576 ENUMX
2577 BFD_RELOC_ARM_IN_POOL
2578 ENUMX
2579 BFD_RELOC_ARM_OFFSET_IMM8
2580 ENUMX
2581 BFD_RELOC_ARM_HWLITERAL
2582 ENUMX
2583 BFD_RELOC_ARM_THUMB_ADD
2584 ENUMX
2585 BFD_RELOC_ARM_THUMB_IMM
2586 ENUMX
2587 BFD_RELOC_ARM_THUMB_SHIFT
2588 ENUMX
2589 BFD_RELOC_ARM_THUMB_OFFSET
2590 ENUMX
2591 BFD_RELOC_ARM_GOT12
2592 ENUMX
2593 BFD_RELOC_ARM_GOT32
2594 ENUMX
2595 BFD_RELOC_ARM_JUMP_SLOT
2596 ENUMX
2597 BFD_RELOC_ARM_COPY
2598 ENUMX
2599 BFD_RELOC_ARM_GLOB_DAT
2600 ENUMX
2601 BFD_RELOC_ARM_PLT32
2602 ENUMX
2603 BFD_RELOC_ARM_RELATIVE
2604 ENUMX
2605 BFD_RELOC_ARM_GOTOFF
2606 ENUMX
2607 BFD_RELOC_ARM_GOTPC
2608 ENUMDOC
2609 These relocs are only used within the ARM assembler. They are not
2610 (at present) written to any object files.
2611 ENUM
2612 BFD_RELOC_ARM_TARGET1
2613 ENUMDOC
2614 Pc-relative or absolute relocation depending on target. Used for
2615 entries in .init_array sections.
2616 ENUM
2617 BFD_RELOC_ARM_ROSEGREL32
2618 ENUMDOC
2619 Read-only segment base relative address.
2620 ENUM
2621 BFD_RELOC_ARM_SBREL32
2622 ENUMDOC
2623 Data segment base relative address.
2624 ENUM
2625 BFD_RELOC_ARM_TARGET2
2626 ENUMDOC
2627 This reloc is used for References to RTTI dta from exception handling
2628 tables. The actual definition depends on the target. It may be a
2629 pc-relative or some form of GOT-indirect relocation.
2630 ENUM
2631 BFD_RELOC_ARM_PREL31
2632 ENUMDOC
2633 31-bit PC relative address.
2634
2635 ENUM
2636 BFD_RELOC_SH_PCDISP8BY2
2637 ENUMX
2638 BFD_RELOC_SH_PCDISP12BY2
2639 ENUMX
2640 BFD_RELOC_SH_IMM3
2641 ENUMX
2642 BFD_RELOC_SH_IMM3U
2643 ENUMX
2644 BFD_RELOC_SH_DISP12
2645 ENUMX
2646 BFD_RELOC_SH_DISP12BY2
2647 ENUMX
2648 BFD_RELOC_SH_DISP12BY4
2649 ENUMX
2650 BFD_RELOC_SH_DISP12BY8
2651 ENUMX
2652 BFD_RELOC_SH_DISP20
2653 ENUMX
2654 BFD_RELOC_SH_DISP20BY8
2655 ENUMX
2656 BFD_RELOC_SH_IMM4
2657 ENUMX
2658 BFD_RELOC_SH_IMM4BY2
2659 ENUMX
2660 BFD_RELOC_SH_IMM4BY4
2661 ENUMX
2662 BFD_RELOC_SH_IMM8
2663 ENUMX
2664 BFD_RELOC_SH_IMM8BY2
2665 ENUMX
2666 BFD_RELOC_SH_IMM8BY4
2667 ENUMX
2668 BFD_RELOC_SH_PCRELIMM8BY2
2669 ENUMX
2670 BFD_RELOC_SH_PCRELIMM8BY4
2671 ENUMX
2672 BFD_RELOC_SH_SWITCH16
2673 ENUMX
2674 BFD_RELOC_SH_SWITCH32
2675 ENUMX
2676 BFD_RELOC_SH_USES
2677 ENUMX
2678 BFD_RELOC_SH_COUNT
2679 ENUMX
2680 BFD_RELOC_SH_ALIGN
2681 ENUMX
2682 BFD_RELOC_SH_CODE
2683 ENUMX
2684 BFD_RELOC_SH_DATA
2685 ENUMX
2686 BFD_RELOC_SH_LABEL
2687 ENUMX
2688 BFD_RELOC_SH_LOOP_START
2689 ENUMX
2690 BFD_RELOC_SH_LOOP_END
2691 ENUMX
2692 BFD_RELOC_SH_COPY
2693 ENUMX
2694 BFD_RELOC_SH_GLOB_DAT
2695 ENUMX
2696 BFD_RELOC_SH_JMP_SLOT
2697 ENUMX
2698 BFD_RELOC_SH_RELATIVE
2699 ENUMX
2700 BFD_RELOC_SH_GOTPC
2701 ENUMX
2702 BFD_RELOC_SH_GOT_LOW16
2703 ENUMX
2704 BFD_RELOC_SH_GOT_MEDLOW16
2705 ENUMX
2706 BFD_RELOC_SH_GOT_MEDHI16
2707 ENUMX
2708 BFD_RELOC_SH_GOT_HI16
2709 ENUMX
2710 BFD_RELOC_SH_GOTPLT_LOW16
2711 ENUMX
2712 BFD_RELOC_SH_GOTPLT_MEDLOW16
2713 ENUMX
2714 BFD_RELOC_SH_GOTPLT_MEDHI16
2715 ENUMX
2716 BFD_RELOC_SH_GOTPLT_HI16
2717 ENUMX
2718 BFD_RELOC_SH_PLT_LOW16
2719 ENUMX
2720 BFD_RELOC_SH_PLT_MEDLOW16
2721 ENUMX
2722 BFD_RELOC_SH_PLT_MEDHI16
2723 ENUMX
2724 BFD_RELOC_SH_PLT_HI16
2725 ENUMX
2726 BFD_RELOC_SH_GOTOFF_LOW16
2727 ENUMX
2728 BFD_RELOC_SH_GOTOFF_MEDLOW16
2729 ENUMX
2730 BFD_RELOC_SH_GOTOFF_MEDHI16
2731 ENUMX
2732 BFD_RELOC_SH_GOTOFF_HI16
2733 ENUMX
2734 BFD_RELOC_SH_GOTPC_LOW16
2735 ENUMX
2736 BFD_RELOC_SH_GOTPC_MEDLOW16
2737 ENUMX
2738 BFD_RELOC_SH_GOTPC_MEDHI16
2739 ENUMX
2740 BFD_RELOC_SH_GOTPC_HI16
2741 ENUMX
2742 BFD_RELOC_SH_COPY64
2743 ENUMX
2744 BFD_RELOC_SH_GLOB_DAT64
2745 ENUMX
2746 BFD_RELOC_SH_JMP_SLOT64
2747 ENUMX
2748 BFD_RELOC_SH_RELATIVE64
2749 ENUMX
2750 BFD_RELOC_SH_GOT10BY4
2751 ENUMX
2752 BFD_RELOC_SH_GOT10BY8
2753 ENUMX
2754 BFD_RELOC_SH_GOTPLT10BY4
2755 ENUMX
2756 BFD_RELOC_SH_GOTPLT10BY8
2757 ENUMX
2758 BFD_RELOC_SH_GOTPLT32
2759 ENUMX
2760 BFD_RELOC_SH_SHMEDIA_CODE
2761 ENUMX
2762 BFD_RELOC_SH_IMMU5
2763 ENUMX
2764 BFD_RELOC_SH_IMMS6
2765 ENUMX
2766 BFD_RELOC_SH_IMMS6BY32
2767 ENUMX
2768 BFD_RELOC_SH_IMMU6
2769 ENUMX
2770 BFD_RELOC_SH_IMMS10
2771 ENUMX
2772 BFD_RELOC_SH_IMMS10BY2
2773 ENUMX
2774 BFD_RELOC_SH_IMMS10BY4
2775 ENUMX
2776 BFD_RELOC_SH_IMMS10BY8
2777 ENUMX
2778 BFD_RELOC_SH_IMMS16
2779 ENUMX
2780 BFD_RELOC_SH_IMMU16
2781 ENUMX
2782 BFD_RELOC_SH_IMM_LOW16
2783 ENUMX
2784 BFD_RELOC_SH_IMM_LOW16_PCREL
2785 ENUMX
2786 BFD_RELOC_SH_IMM_MEDLOW16
2787 ENUMX
2788 BFD_RELOC_SH_IMM_MEDLOW16_PCREL
2789 ENUMX
2790 BFD_RELOC_SH_IMM_MEDHI16
2791 ENUMX
2792 BFD_RELOC_SH_IMM_MEDHI16_PCREL
2793 ENUMX
2794 BFD_RELOC_SH_IMM_HI16
2795 ENUMX
2796 BFD_RELOC_SH_IMM_HI16_PCREL
2797 ENUMX
2798 BFD_RELOC_SH_PT_16
2799 ENUMX
2800 BFD_RELOC_SH_TLS_GD_32
2801 ENUMX
2802 BFD_RELOC_SH_TLS_LD_32
2803 ENUMX
2804 BFD_RELOC_SH_TLS_LDO_32
2805 ENUMX
2806 BFD_RELOC_SH_TLS_IE_32
2807 ENUMX
2808 BFD_RELOC_SH_TLS_LE_32
2809 ENUMX
2810 BFD_RELOC_SH_TLS_DTPMOD32
2811 ENUMX
2812 BFD_RELOC_SH_TLS_DTPOFF32
2813 ENUMX
2814 BFD_RELOC_SH_TLS_TPOFF32
2815 ENUMDOC
2816 Renesas / SuperH SH relocs. Not all of these appear in object files.
2817
2818 ENUM
2819 BFD_RELOC_THUMB_PCREL_BRANCH9
2820 ENUMX
2821 BFD_RELOC_THUMB_PCREL_BRANCH12
2822 ENUMX
2823 BFD_RELOC_THUMB_PCREL_BRANCH23
2824 ENUMDOC
2825 Thumb 23-, 12- and 9-bit pc-relative branches. The lowest bit must
2826 be zero and is not stored in the instruction.
2827
2828 ENUM
2829 BFD_RELOC_ARC_B22_PCREL
2830 ENUMDOC
2831 ARC Cores relocs.
2832 ARC 22 bit pc-relative branch. The lowest two bits must be zero and are
2833 not stored in the instruction. The high 20 bits are installed in bits 26
2834 through 7 of the instruction.
2835 ENUM
2836 BFD_RELOC_ARC_B26
2837 ENUMDOC
2838 ARC 26 bit absolute branch. The lowest two bits must be zero and are not
2839 stored in the instruction. The high 24 bits are installed in bits 23
2840 through 0.
2841
2842 ENUM
2843 BFD_RELOC_D10V_10_PCREL_R
2844 ENUMDOC
2845 Mitsubishi D10V relocs.
2846 This is a 10-bit reloc with the right 2 bits
2847 assumed to be 0.
2848 ENUM
2849 BFD_RELOC_D10V_10_PCREL_L
2850 ENUMDOC
2851 Mitsubishi D10V relocs.
2852 This is a 10-bit reloc with the right 2 bits
2853 assumed to be 0. This is the same as the previous reloc
2854 except it is in the left container, i.e.,
2855 shifted left 15 bits.
2856 ENUM
2857 BFD_RELOC_D10V_18
2858 ENUMDOC
2859 This is an 18-bit reloc with the right 2 bits
2860 assumed to be 0.
2861 ENUM
2862 BFD_RELOC_D10V_18_PCREL
2863 ENUMDOC
2864 This is an 18-bit reloc with the right 2 bits
2865 assumed to be 0.
2866
2867 ENUM
2868 BFD_RELOC_D30V_6
2869 ENUMDOC
2870 Mitsubishi D30V relocs.
2871 This is a 6-bit absolute reloc.
2872 ENUM
2873 BFD_RELOC_D30V_9_PCREL
2874 ENUMDOC
2875 This is a 6-bit pc-relative reloc with
2876 the right 3 bits assumed to be 0.
2877 ENUM
2878 BFD_RELOC_D30V_9_PCREL_R
2879 ENUMDOC
2880 This is a 6-bit pc-relative reloc with
2881 the right 3 bits assumed to be 0. Same
2882 as the previous reloc but on the right side
2883 of the container.
2884 ENUM
2885 BFD_RELOC_D30V_15
2886 ENUMDOC
2887 This is a 12-bit absolute reloc with the
2888 right 3 bitsassumed to be 0.
2889 ENUM
2890 BFD_RELOC_D30V_15_PCREL
2891 ENUMDOC
2892 This is a 12-bit pc-relative reloc with
2893 the right 3 bits assumed to be 0.
2894 ENUM
2895 BFD_RELOC_D30V_15_PCREL_R
2896 ENUMDOC
2897 This is a 12-bit pc-relative reloc with
2898 the right 3 bits assumed to be 0. Same
2899 as the previous reloc but on the right side
2900 of the container.
2901 ENUM
2902 BFD_RELOC_D30V_21
2903 ENUMDOC
2904 This is an 18-bit absolute reloc with
2905 the right 3 bits assumed to be 0.
2906 ENUM
2907 BFD_RELOC_D30V_21_PCREL
2908 ENUMDOC
2909 This is an 18-bit pc-relative reloc with
2910 the right 3 bits assumed to be 0.
2911 ENUM
2912 BFD_RELOC_D30V_21_PCREL_R
2913 ENUMDOC
2914 This is an 18-bit pc-relative reloc with
2915 the right 3 bits assumed to be 0. Same
2916 as the previous reloc but on the right side
2917 of the container.
2918 ENUM
2919 BFD_RELOC_D30V_32
2920 ENUMDOC
2921 This is a 32-bit absolute reloc.
2922 ENUM
2923 BFD_RELOC_D30V_32_PCREL
2924 ENUMDOC
2925 This is a 32-bit pc-relative reloc.
2926
2927 ENUM
2928 BFD_RELOC_DLX_HI16_S
2929 ENUMDOC
2930 DLX relocs
2931 ENUM
2932 BFD_RELOC_DLX_LO16
2933 ENUMDOC
2934 DLX relocs
2935 ENUM
2936 BFD_RELOC_DLX_JMP26
2937 ENUMDOC
2938 DLX relocs
2939
2940 ENUM
2941 BFD_RELOC_M32R_24
2942 ENUMDOC
2943 Renesas M32R (formerly Mitsubishi M32R) relocs.
2944 This is a 24 bit absolute address.
2945 ENUM
2946 BFD_RELOC_M32R_10_PCREL
2947 ENUMDOC
2948 This is a 10-bit pc-relative reloc with the right 2 bits assumed to be 0.
2949 ENUM
2950 BFD_RELOC_M32R_18_PCREL
2951 ENUMDOC
2952 This is an 18-bit reloc with the right 2 bits assumed to be 0.
2953 ENUM
2954 BFD_RELOC_M32R_26_PCREL
2955 ENUMDOC
2956 This is a 26-bit reloc with the right 2 bits assumed to be 0.
2957 ENUM
2958 BFD_RELOC_M32R_HI16_ULO
2959 ENUMDOC
2960 This is a 16-bit reloc containing the high 16 bits of an address
2961 used when the lower 16 bits are treated as unsigned.
2962 ENUM
2963 BFD_RELOC_M32R_HI16_SLO
2964 ENUMDOC
2965 This is a 16-bit reloc containing the high 16 bits of an address
2966 used when the lower 16 bits are treated as signed.
2967 ENUM
2968 BFD_RELOC_M32R_LO16
2969 ENUMDOC
2970 This is a 16-bit reloc containing the lower 16 bits of an address.
2971 ENUM
2972 BFD_RELOC_M32R_SDA16
2973 ENUMDOC
2974 This is a 16-bit reloc containing the small data area offset for use in
2975 add3, load, and store instructions.
2976 ENUM
2977 BFD_RELOC_M32R_GOT24
2978 ENUMX
2979 BFD_RELOC_M32R_26_PLTREL
2980 ENUMX
2981 BFD_RELOC_M32R_COPY
2982 ENUMX
2983 BFD_RELOC_M32R_GLOB_DAT
2984 ENUMX
2985 BFD_RELOC_M32R_JMP_SLOT
2986 ENUMX
2987 BFD_RELOC_M32R_RELATIVE
2988 ENUMX
2989 BFD_RELOC_M32R_GOTOFF
2990 ENUMX
2991 BFD_RELOC_M32R_GOTOFF_HI_ULO
2992 ENUMX
2993 BFD_RELOC_M32R_GOTOFF_HI_SLO
2994 ENUMX
2995 BFD_RELOC_M32R_GOTOFF_LO
2996 ENUMX
2997 BFD_RELOC_M32R_GOTPC24
2998 ENUMX
2999 BFD_RELOC_M32R_GOT16_HI_ULO
3000 ENUMX
3001 BFD_RELOC_M32R_GOT16_HI_SLO
3002 ENUMX
3003 BFD_RELOC_M32R_GOT16_LO
3004 ENUMX
3005 BFD_RELOC_M32R_GOTPC_HI_ULO
3006 ENUMX
3007 BFD_RELOC_M32R_GOTPC_HI_SLO
3008 ENUMX
3009 BFD_RELOC_M32R_GOTPC_LO
3010 ENUMDOC
3011 For PIC.
3012
3013
3014 ENUM
3015 BFD_RELOC_V850_9_PCREL
3016 ENUMDOC
3017 This is a 9-bit reloc
3018 ENUM
3019 BFD_RELOC_V850_22_PCREL
3020 ENUMDOC
3021 This is a 22-bit reloc
3022
3023 ENUM
3024 BFD_RELOC_V850_SDA_16_16_OFFSET
3025 ENUMDOC
3026 This is a 16 bit offset from the short data area pointer.
3027 ENUM
3028 BFD_RELOC_V850_SDA_15_16_OFFSET
3029 ENUMDOC
3030 This is a 16 bit offset (of which only 15 bits are used) from the
3031 short data area pointer.
3032 ENUM
3033 BFD_RELOC_V850_ZDA_16_16_OFFSET
3034 ENUMDOC
3035 This is a 16 bit offset from the zero data area pointer.
3036 ENUM
3037 BFD_RELOC_V850_ZDA_15_16_OFFSET
3038 ENUMDOC
3039 This is a 16 bit offset (of which only 15 bits are used) from the
3040 zero data area pointer.
3041 ENUM
3042 BFD_RELOC_V850_TDA_6_8_OFFSET
3043 ENUMDOC
3044 This is an 8 bit offset (of which only 6 bits are used) from the
3045 tiny data area pointer.
3046 ENUM
3047 BFD_RELOC_V850_TDA_7_8_OFFSET
3048 ENUMDOC
3049 This is an 8bit offset (of which only 7 bits are used) from the tiny
3050 data area pointer.
3051 ENUM
3052 BFD_RELOC_V850_TDA_7_7_OFFSET
3053 ENUMDOC
3054 This is a 7 bit offset from the tiny data area pointer.
3055 ENUM
3056 BFD_RELOC_V850_TDA_16_16_OFFSET
3057 ENUMDOC
3058 This is a 16 bit offset from the tiny data area pointer.
3059 COMMENT
3060 ENUM
3061 BFD_RELOC_V850_TDA_4_5_OFFSET
3062 ENUMDOC
3063 This is a 5 bit offset (of which only 4 bits are used) from the tiny
3064 data area pointer.
3065 ENUM
3066 BFD_RELOC_V850_TDA_4_4_OFFSET
3067 ENUMDOC
3068 This is a 4 bit offset from the tiny data area pointer.
3069 ENUM
3070 BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
3071 ENUMDOC
3072 This is a 16 bit offset from the short data area pointer, with the
3073 bits placed non-contiguously in the instruction.
3074 ENUM
3075 BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
3076 ENUMDOC
3077 This is a 16 bit offset from the zero data area pointer, with the
3078 bits placed non-contiguously in the instruction.
3079 ENUM
3080 BFD_RELOC_V850_CALLT_6_7_OFFSET
3081 ENUMDOC
3082 This is a 6 bit offset from the call table base pointer.
3083 ENUM
3084 BFD_RELOC_V850_CALLT_16_16_OFFSET
3085 ENUMDOC
3086 This is a 16 bit offset from the call table base pointer.
3087 ENUM
3088 BFD_RELOC_V850_LONGCALL
3089 ENUMDOC
3090 Used for relaxing indirect function calls.
3091 ENUM
3092 BFD_RELOC_V850_LONGJUMP
3093 ENUMDOC
3094 Used for relaxing indirect jumps.
3095 ENUM
3096 BFD_RELOC_V850_ALIGN
3097 ENUMDOC
3098 Used to maintain alignment whilst relaxing.
3099 ENUM
3100 BFD_RELOC_MN10300_32_PCREL
3101 ENUMDOC
3102 This is a 32bit pcrel reloc for the mn10300, offset by two bytes in the
3103 instruction.
3104 ENUM
3105 BFD_RELOC_MN10300_16_PCREL
3106 ENUMDOC
3107 This is a 16bit pcrel reloc for the mn10300, offset by two bytes in the
3108 instruction.
3109
3110 ENUM
3111 BFD_RELOC_TIC30_LDP
3112 ENUMDOC
3113 This is a 8bit DP reloc for the tms320c30, where the most
3114 significant 8 bits of a 24 bit word are placed into the least
3115 significant 8 bits of the opcode.
3116
3117 ENUM
3118 BFD_RELOC_TIC54X_PARTLS7
3119 ENUMDOC
3120 This is a 7bit reloc for the tms320c54x, where the least
3121 significant 7 bits of a 16 bit word are placed into the least
3122 significant 7 bits of the opcode.
3123
3124 ENUM
3125 BFD_RELOC_TIC54X_PARTMS9
3126 ENUMDOC
3127 This is a 9bit DP reloc for the tms320c54x, where the most
3128 significant 9 bits of a 16 bit word are placed into the least
3129 significant 9 bits of the opcode.
3130
3131 ENUM
3132 BFD_RELOC_TIC54X_23
3133 ENUMDOC
3134 This is an extended address 23-bit reloc for the tms320c54x.
3135
3136 ENUM
3137 BFD_RELOC_TIC54X_16_OF_23
3138 ENUMDOC
3139 This is a 16-bit reloc for the tms320c54x, where the least
3140 significant 16 bits of a 23-bit extended address are placed into
3141 the opcode.
3142
3143 ENUM
3144 BFD_RELOC_TIC54X_MS7_OF_23
3145 ENUMDOC
3146 This is a reloc for the tms320c54x, where the most
3147 significant 7 bits of a 23-bit extended address are placed into
3148 the opcode.
3149
3150 ENUM
3151 BFD_RELOC_FR30_48
3152 ENUMDOC
3153 This is a 48 bit reloc for the FR30 that stores 32 bits.
3154 ENUM
3155 BFD_RELOC_FR30_20
3156 ENUMDOC
3157 This is a 32 bit reloc for the FR30 that stores 20 bits split up into
3158 two sections.
3159 ENUM
3160 BFD_RELOC_FR30_6_IN_4
3161 ENUMDOC
3162 This is a 16 bit reloc for the FR30 that stores a 6 bit word offset in
3163 4 bits.
3164 ENUM
3165 BFD_RELOC_FR30_8_IN_8
3166 ENUMDOC
3167 This is a 16 bit reloc for the FR30 that stores an 8 bit byte offset
3168 into 8 bits.
3169 ENUM
3170 BFD_RELOC_FR30_9_IN_8
3171 ENUMDOC
3172 This is a 16 bit reloc for the FR30 that stores a 9 bit short offset
3173 into 8 bits.
3174 ENUM
3175 BFD_RELOC_FR30_10_IN_8
3176 ENUMDOC
3177 This is a 16 bit reloc for the FR30 that stores a 10 bit word offset
3178 into 8 bits.
3179 ENUM
3180 BFD_RELOC_FR30_9_PCREL
3181 ENUMDOC
3182 This is a 16 bit reloc for the FR30 that stores a 9 bit pc relative
3183 short offset into 8 bits.
3184 ENUM
3185 BFD_RELOC_FR30_12_PCREL
3186 ENUMDOC
3187 This is a 16 bit reloc for the FR30 that stores a 12 bit pc relative
3188 short offset into 11 bits.
3189
3190 ENUM
3191 BFD_RELOC_MCORE_PCREL_IMM8BY4
3192 ENUMX
3193 BFD_RELOC_MCORE_PCREL_IMM11BY2
3194 ENUMX
3195 BFD_RELOC_MCORE_PCREL_IMM4BY2
3196 ENUMX
3197 BFD_RELOC_MCORE_PCREL_32
3198 ENUMX
3199 BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2
3200 ENUMX
3201 BFD_RELOC_MCORE_RVA
3202 ENUMDOC
3203 Motorola Mcore relocations.
3204
3205 ENUM
3206 BFD_RELOC_MMIX_GETA
3207 ENUMX
3208 BFD_RELOC_MMIX_GETA_1
3209 ENUMX
3210 BFD_RELOC_MMIX_GETA_2
3211 ENUMX
3212 BFD_RELOC_MMIX_GETA_3
3213 ENUMDOC
3214 These are relocations for the GETA instruction.
3215 ENUM
3216 BFD_RELOC_MMIX_CBRANCH
3217 ENUMX
3218 BFD_RELOC_MMIX_CBRANCH_J
3219 ENUMX
3220 BFD_RELOC_MMIX_CBRANCH_1
3221 ENUMX
3222 BFD_RELOC_MMIX_CBRANCH_2
3223 ENUMX
3224 BFD_RELOC_MMIX_CBRANCH_3
3225 ENUMDOC
3226 These are relocations for a conditional branch instruction.
3227 ENUM
3228 BFD_RELOC_MMIX_PUSHJ
3229 ENUMX
3230 BFD_RELOC_MMIX_PUSHJ_1
3231 ENUMX
3232 BFD_RELOC_MMIX_PUSHJ_2
3233 ENUMX
3234 BFD_RELOC_MMIX_PUSHJ_3
3235 ENUMX
3236 BFD_RELOC_MMIX_PUSHJ_STUBBABLE
3237 ENUMDOC
3238 These are relocations for the PUSHJ instruction.
3239 ENUM
3240 BFD_RELOC_MMIX_JMP
3241 ENUMX
3242 BFD_RELOC_MMIX_JMP_1
3243 ENUMX
3244 BFD_RELOC_MMIX_JMP_2
3245 ENUMX
3246 BFD_RELOC_MMIX_JMP_3
3247 ENUMDOC
3248 These are relocations for the JMP instruction.
3249 ENUM
3250 BFD_RELOC_MMIX_ADDR19
3251 ENUMDOC
3252 This is a relocation for a relative address as in a GETA instruction or
3253 a branch.
3254 ENUM
3255 BFD_RELOC_MMIX_ADDR27
3256 ENUMDOC
3257 This is a relocation for a relative address as in a JMP instruction.
3258 ENUM
3259 BFD_RELOC_MMIX_REG_OR_BYTE
3260 ENUMDOC
3261 This is a relocation for an instruction field that may be a general
3262 register or a value 0..255.
3263 ENUM
3264 BFD_RELOC_MMIX_REG
3265 ENUMDOC
3266 This is a relocation for an instruction field that may be a general
3267 register.
3268 ENUM
3269 BFD_RELOC_MMIX_BASE_PLUS_OFFSET
3270 ENUMDOC
3271 This is a relocation for two instruction fields holding a register and
3272 an offset, the equivalent of the relocation.
3273 ENUM
3274 BFD_RELOC_MMIX_LOCAL
3275 ENUMDOC
3276 This relocation is an assertion that the expression is not allocated as
3277 a global register. It does not modify contents.
3278
3279 ENUM
3280 BFD_RELOC_AVR_7_PCREL
3281 ENUMDOC
3282 This is a 16 bit reloc for the AVR that stores 8 bit pc relative
3283 short offset into 7 bits.
3284 ENUM
3285 BFD_RELOC_AVR_13_PCREL
3286 ENUMDOC
3287 This is a 16 bit reloc for the AVR that stores 13 bit pc relative
3288 short offset into 12 bits.
3289 ENUM
3290 BFD_RELOC_AVR_16_PM
3291 ENUMDOC
3292 This is a 16 bit reloc for the AVR that stores 17 bit value (usually
3293 program memory address) into 16 bits.
3294 ENUM
3295 BFD_RELOC_AVR_LO8_LDI
3296 ENUMDOC
3297 This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3298 data memory address) into 8 bit immediate value of LDI insn.
3299 ENUM
3300 BFD_RELOC_AVR_HI8_LDI
3301 ENUMDOC
3302 This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3303 of data memory address) into 8 bit immediate value of LDI insn.
3304 ENUM
3305 BFD_RELOC_AVR_HH8_LDI
3306 ENUMDOC
3307 This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3308 of program memory address) into 8 bit immediate value of LDI insn.
3309 ENUM
3310 BFD_RELOC_AVR_LO8_LDI_NEG
3311 ENUMDOC
3312 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3313 (usually data memory address) into 8 bit immediate value of SUBI insn.
3314 ENUM
3315 BFD_RELOC_AVR_HI8_LDI_NEG
3316 ENUMDOC
3317 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3318 (high 8 bit of data memory address) into 8 bit immediate value of
3319 SUBI insn.
3320 ENUM
3321 BFD_RELOC_AVR_HH8_LDI_NEG
3322 ENUMDOC
3323 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3324 (most high 8 bit of program memory address) into 8 bit immediate value
3325 of LDI or SUBI insn.
3326 ENUM
3327 BFD_RELOC_AVR_LO8_LDI_PM
3328 ENUMDOC
3329 This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3330 command address) into 8 bit immediate value of LDI insn.
3331 ENUM
3332 BFD_RELOC_AVR_HI8_LDI_PM
3333 ENUMDOC
3334 This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3335 of command address) into 8 bit immediate value of LDI insn.
3336 ENUM
3337 BFD_RELOC_AVR_HH8_LDI_PM
3338 ENUMDOC
3339 This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3340 of command address) into 8 bit immediate value of LDI insn.
3341 ENUM
3342 BFD_RELOC_AVR_LO8_LDI_PM_NEG
3343 ENUMDOC
3344 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3345 (usually command address) into 8 bit immediate value of SUBI insn.
3346 ENUM
3347 BFD_RELOC_AVR_HI8_LDI_PM_NEG
3348 ENUMDOC
3349 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3350 (high 8 bit of 16 bit command address) into 8 bit immediate value
3351 of SUBI insn.
3352 ENUM
3353 BFD_RELOC_AVR_HH8_LDI_PM_NEG
3354 ENUMDOC
3355 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3356 (high 6 bit of 22 bit command address) into 8 bit immediate
3357 value of SUBI insn.
3358 ENUM
3359 BFD_RELOC_AVR_CALL
3360 ENUMDOC
3361 This is a 32 bit reloc for the AVR that stores 23 bit value
3362 into 22 bits.
3363
3364 ENUM
3365 BFD_RELOC_390_12
3366 ENUMDOC
3367 Direct 12 bit.
3368 ENUM
3369 BFD_RELOC_390_GOT12
3370 ENUMDOC
3371 12 bit GOT offset.
3372 ENUM
3373 BFD_RELOC_390_PLT32
3374 ENUMDOC
3375 32 bit PC relative PLT address.
3376 ENUM
3377 BFD_RELOC_390_COPY
3378 ENUMDOC
3379 Copy symbol at runtime.
3380 ENUM
3381 BFD_RELOC_390_GLOB_DAT
3382 ENUMDOC
3383 Create GOT entry.
3384 ENUM
3385 BFD_RELOC_390_JMP_SLOT
3386 ENUMDOC
3387 Create PLT entry.
3388 ENUM
3389 BFD_RELOC_390_RELATIVE
3390 ENUMDOC
3391 Adjust by program base.
3392 ENUM
3393 BFD_RELOC_390_GOTPC
3394 ENUMDOC
3395 32 bit PC relative offset to GOT.
3396 ENUM
3397 BFD_RELOC_390_GOT16
3398 ENUMDOC
3399 16 bit GOT offset.
3400 ENUM
3401 BFD_RELOC_390_PC16DBL
3402 ENUMDOC
3403 PC relative 16 bit shifted by 1.
3404 ENUM
3405 BFD_RELOC_390_PLT16DBL
3406 ENUMDOC
3407 16 bit PC rel. PLT shifted by 1.
3408 ENUM
3409 BFD_RELOC_390_PC32DBL
3410 ENUMDOC
3411 PC relative 32 bit shifted by 1.
3412 ENUM
3413 BFD_RELOC_390_PLT32DBL
3414 ENUMDOC
3415 32 bit PC rel. PLT shifted by 1.
3416 ENUM
3417 BFD_RELOC_390_GOTPCDBL
3418 ENUMDOC
3419 32 bit PC rel. GOT shifted by 1.
3420 ENUM
3421 BFD_RELOC_390_GOT64
3422 ENUMDOC
3423 64 bit GOT offset.
3424 ENUM
3425 BFD_RELOC_390_PLT64
3426 ENUMDOC
3427 64 bit PC relative PLT address.
3428 ENUM
3429 BFD_RELOC_390_GOTENT
3430 ENUMDOC
3431 32 bit rel. offset to GOT entry.
3432 ENUM
3433 BFD_RELOC_390_GOTOFF64
3434 ENUMDOC
3435 64 bit offset to GOT.
3436 ENUM
3437 BFD_RELOC_390_GOTPLT12
3438 ENUMDOC
3439 12-bit offset to symbol-entry within GOT, with PLT handling.
3440 ENUM
3441 BFD_RELOC_390_GOTPLT16
3442 ENUMDOC
3443 16-bit offset to symbol-entry within GOT, with PLT handling.
3444 ENUM
3445 BFD_RELOC_390_GOTPLT32
3446 ENUMDOC
3447 32-bit offset to symbol-entry within GOT, with PLT handling.
3448 ENUM
3449 BFD_RELOC_390_GOTPLT64
3450 ENUMDOC
3451 64-bit offset to symbol-entry within GOT, with PLT handling.
3452 ENUM
3453 BFD_RELOC_390_GOTPLTENT
3454 ENUMDOC
3455 32-bit rel. offset to symbol-entry within GOT, with PLT handling.
3456 ENUM
3457 BFD_RELOC_390_PLTOFF16
3458 ENUMDOC
3459 16-bit rel. offset from the GOT to a PLT entry.
3460 ENUM
3461 BFD_RELOC_390_PLTOFF32
3462 ENUMDOC
3463 32-bit rel. offset from the GOT to a PLT entry.
3464 ENUM
3465 BFD_RELOC_390_PLTOFF64
3466 ENUMDOC
3467 64-bit rel. offset from the GOT to a PLT entry.
3468
3469 ENUM
3470 BFD_RELOC_390_TLS_LOAD
3471 ENUMX
3472 BFD_RELOC_390_TLS_GDCALL
3473 ENUMX
3474 BFD_RELOC_390_TLS_LDCALL
3475 ENUMX
3476 BFD_RELOC_390_TLS_GD32
3477 ENUMX
3478 BFD_RELOC_390_TLS_GD64
3479 ENUMX
3480 BFD_RELOC_390_TLS_GOTIE12
3481 ENUMX
3482 BFD_RELOC_390_TLS_GOTIE32
3483 ENUMX
3484 BFD_RELOC_390_TLS_GOTIE64
3485 ENUMX
3486 BFD_RELOC_390_TLS_LDM32
3487 ENUMX
3488 BFD_RELOC_390_TLS_LDM64
3489 ENUMX
3490 BFD_RELOC_390_TLS_IE32
3491 ENUMX
3492 BFD_RELOC_390_TLS_IE64
3493 ENUMX
3494 BFD_RELOC_390_TLS_IEENT
3495 ENUMX
3496 BFD_RELOC_390_TLS_LE32
3497 ENUMX
3498 BFD_RELOC_390_TLS_LE64
3499 ENUMX
3500 BFD_RELOC_390_TLS_LDO32
3501 ENUMX
3502 BFD_RELOC_390_TLS_LDO64
3503 ENUMX
3504 BFD_RELOC_390_TLS_DTPMOD
3505 ENUMX
3506 BFD_RELOC_390_TLS_DTPOFF
3507 ENUMX
3508 BFD_RELOC_390_TLS_TPOFF
3509 ENUMDOC
3510 s390 tls relocations.
3511
3512 ENUM
3513 BFD_RELOC_390_20
3514 ENUMX
3515 BFD_RELOC_390_GOT20
3516 ENUMX
3517 BFD_RELOC_390_GOTPLT20
3518 ENUMX
3519 BFD_RELOC_390_TLS_GOTIE20
3520 ENUMDOC
3521 Long displacement extension.
3522
3523 ENUM
3524 BFD_RELOC_IP2K_FR9
3525 ENUMDOC
3526 Scenix IP2K - 9-bit register number / data address
3527 ENUM
3528 BFD_RELOC_IP2K_BANK
3529 ENUMDOC
3530 Scenix IP2K - 4-bit register/data bank number
3531 ENUM
3532 BFD_RELOC_IP2K_ADDR16CJP
3533 ENUMDOC
3534 Scenix IP2K - low 13 bits of instruction word address
3535 ENUM
3536 BFD_RELOC_IP2K_PAGE3
3537 ENUMDOC
3538 Scenix IP2K - high 3 bits of instruction word address
3539 ENUM
3540 BFD_RELOC_IP2K_LO8DATA
3541 ENUMX
3542 BFD_RELOC_IP2K_HI8DATA
3543 ENUMX
3544 BFD_RELOC_IP2K_EX8DATA
3545 ENUMDOC
3546 Scenix IP2K - ext/low/high 8 bits of data address
3547 ENUM
3548 BFD_RELOC_IP2K_LO8INSN
3549 ENUMX
3550 BFD_RELOC_IP2K_HI8INSN
3551 ENUMDOC
3552 Scenix IP2K - low/high 8 bits of instruction word address
3553 ENUM
3554 BFD_RELOC_IP2K_PC_SKIP
3555 ENUMDOC
3556 Scenix IP2K - even/odd PC modifier to modify snb pcl.0
3557 ENUM
3558 BFD_RELOC_IP2K_TEXT
3559 ENUMDOC
3560 Scenix IP2K - 16 bit word address in text section.
3561 ENUM
3562 BFD_RELOC_IP2K_FR_OFFSET
3563 ENUMDOC
3564 Scenix IP2K - 7-bit sp or dp offset
3565 ENUM
3566 BFD_RELOC_VPE4KMATH_DATA
3567 ENUMX
3568 BFD_RELOC_VPE4KMATH_INSN
3569 ENUMDOC
3570 Scenix VPE4K coprocessor - data/insn-space addressing
3571
3572 ENUM
3573 BFD_RELOC_VTABLE_INHERIT
3574 ENUMX
3575 BFD_RELOC_VTABLE_ENTRY
3576 ENUMDOC
3577 These two relocations are used by the linker to determine which of
3578 the entries in a C++ virtual function table are actually used. When
3579 the --gc-sections option is given, the linker will zero out the entries
3580 that are not used, so that the code for those functions need not be
3581 included in the output.
3582
3583 VTABLE_INHERIT is a zero-space relocation used to describe to the
3584 linker the inheritance tree of a C++ virtual function table. The
3585 relocation's symbol should be the parent class' vtable, and the
3586 relocation should be located at the child vtable.
3587
3588 VTABLE_ENTRY is a zero-space relocation that describes the use of a
3589 virtual function table entry. The reloc's symbol should refer to the
3590 table of the class mentioned in the code. Off of that base, an offset
3591 describes the entry that is being used. For Rela hosts, this offset
3592 is stored in the reloc's addend. For Rel hosts, we are forced to put
3593 this offset in the reloc's section offset.
3594
3595 ENUM
3596 BFD_RELOC_IA64_IMM14
3597 ENUMX
3598 BFD_RELOC_IA64_IMM22
3599 ENUMX
3600 BFD_RELOC_IA64_IMM64
3601 ENUMX
3602 BFD_RELOC_IA64_DIR32MSB
3603 ENUMX
3604 BFD_RELOC_IA64_DIR32LSB
3605 ENUMX
3606 BFD_RELOC_IA64_DIR64MSB
3607 ENUMX
3608 BFD_RELOC_IA64_DIR64LSB
3609 ENUMX
3610 BFD_RELOC_IA64_GPREL22
3611 ENUMX
3612 BFD_RELOC_IA64_GPREL64I
3613 ENUMX
3614 BFD_RELOC_IA64_GPREL32MSB
3615 ENUMX
3616 BFD_RELOC_IA64_GPREL32LSB
3617 ENUMX
3618 BFD_RELOC_IA64_GPREL64MSB
3619 ENUMX
3620 BFD_RELOC_IA64_GPREL64LSB
3621 ENUMX
3622 BFD_RELOC_IA64_LTOFF22
3623 ENUMX
3624 BFD_RELOC_IA64_LTOFF64I
3625 ENUMX
3626 BFD_RELOC_IA64_PLTOFF22
3627 ENUMX
3628 BFD_RELOC_IA64_PLTOFF64I
3629 ENUMX
3630 BFD_RELOC_IA64_PLTOFF64MSB
3631 ENUMX
3632 BFD_RELOC_IA64_PLTOFF64LSB
3633 ENUMX
3634 BFD_RELOC_IA64_FPTR64I
3635 ENUMX
3636 BFD_RELOC_IA64_FPTR32MSB
3637 ENUMX
3638 BFD_RELOC_IA64_FPTR32LSB
3639 ENUMX
3640 BFD_RELOC_IA64_FPTR64MSB
3641 ENUMX
3642 BFD_RELOC_IA64_FPTR64LSB
3643 ENUMX
3644 BFD_RELOC_IA64_PCREL21B
3645 ENUMX
3646 BFD_RELOC_IA64_PCREL21BI
3647 ENUMX
3648 BFD_RELOC_IA64_PCREL21M
3649 ENUMX
3650 BFD_RELOC_IA64_PCREL21F
3651 ENUMX
3652 BFD_RELOC_IA64_PCREL22
3653 ENUMX
3654 BFD_RELOC_IA64_PCREL60B
3655 ENUMX
3656 BFD_RELOC_IA64_PCREL64I
3657 ENUMX
3658 BFD_RELOC_IA64_PCREL32MSB
3659 ENUMX
3660 BFD_RELOC_IA64_PCREL32LSB
3661 ENUMX
3662 BFD_RELOC_IA64_PCREL64MSB
3663 ENUMX
3664 BFD_RELOC_IA64_PCREL64LSB
3665 ENUMX
3666 BFD_RELOC_IA64_LTOFF_FPTR22
3667 ENUMX
3668 BFD_RELOC_IA64_LTOFF_FPTR64I
3669 ENUMX
3670 BFD_RELOC_IA64_LTOFF_FPTR32MSB
3671 ENUMX
3672 BFD_RELOC_IA64_LTOFF_FPTR32LSB
3673 ENUMX
3674 BFD_RELOC_IA64_LTOFF_FPTR64MSB
3675 ENUMX
3676 BFD_RELOC_IA64_LTOFF_FPTR64LSB
3677 ENUMX
3678 BFD_RELOC_IA64_SEGREL32MSB
3679 ENUMX
3680 BFD_RELOC_IA64_SEGREL32LSB
3681 ENUMX
3682 BFD_RELOC_IA64_SEGREL64MSB
3683 ENUMX
3684 BFD_RELOC_IA64_SEGREL64LSB
3685 ENUMX
3686 BFD_RELOC_IA64_SECREL32MSB
3687 ENUMX
3688 BFD_RELOC_IA64_SECREL32LSB
3689 ENUMX
3690 BFD_RELOC_IA64_SECREL64MSB
3691 ENUMX
3692 BFD_RELOC_IA64_SECREL64LSB
3693 ENUMX
3694 BFD_RELOC_IA64_REL32MSB
3695 ENUMX
3696 BFD_RELOC_IA64_REL32LSB
3697 ENUMX
3698 BFD_RELOC_IA64_REL64MSB
3699 ENUMX
3700 BFD_RELOC_IA64_REL64LSB
3701 ENUMX
3702 BFD_RELOC_IA64_LTV32MSB
3703 ENUMX
3704 BFD_RELOC_IA64_LTV32LSB
3705 ENUMX
3706 BFD_RELOC_IA64_LTV64MSB
3707 ENUMX
3708 BFD_RELOC_IA64_LTV64LSB
3709 ENUMX
3710 BFD_RELOC_IA64_IPLTMSB
3711 ENUMX
3712 BFD_RELOC_IA64_IPLTLSB
3713 ENUMX
3714 BFD_RELOC_IA64_COPY
3715 ENUMX
3716 BFD_RELOC_IA64_LTOFF22X
3717 ENUMX
3718 BFD_RELOC_IA64_LDXMOV
3719 ENUMX
3720 BFD_RELOC_IA64_TPREL14
3721 ENUMX
3722 BFD_RELOC_IA64_TPREL22
3723 ENUMX
3724 BFD_RELOC_IA64_TPREL64I
3725 ENUMX
3726 BFD_RELOC_IA64_TPREL64MSB
3727 ENUMX
3728 BFD_RELOC_IA64_TPREL64LSB
3729 ENUMX
3730 BFD_RELOC_IA64_LTOFF_TPREL22
3731 ENUMX
3732 BFD_RELOC_IA64_DTPMOD64MSB
3733 ENUMX
3734 BFD_RELOC_IA64_DTPMOD64LSB
3735 ENUMX
3736 BFD_RELOC_IA64_LTOFF_DTPMOD22
3737 ENUMX
3738 BFD_RELOC_IA64_DTPREL14
3739 ENUMX
3740 BFD_RELOC_IA64_DTPREL22
3741 ENUMX
3742 BFD_RELOC_IA64_DTPREL64I
3743 ENUMX
3744 BFD_RELOC_IA64_DTPREL32MSB
3745 ENUMX
3746 BFD_RELOC_IA64_DTPREL32LSB
3747 ENUMX
3748 BFD_RELOC_IA64_DTPREL64MSB
3749 ENUMX
3750 BFD_RELOC_IA64_DTPREL64LSB
3751 ENUMX
3752 BFD_RELOC_IA64_LTOFF_DTPREL22
3753 ENUMDOC
3754 Intel IA64 Relocations.
3755
3756 ENUM
3757 BFD_RELOC_M68HC11_HI8
3758 ENUMDOC
3759 Motorola 68HC11 reloc.
3760 This is the 8 bit high part of an absolute address.
3761 ENUM
3762 BFD_RELOC_M68HC11_LO8
3763 ENUMDOC
3764 Motorola 68HC11 reloc.
3765 This is the 8 bit low part of an absolute address.
3766 ENUM
3767 BFD_RELOC_M68HC11_3B
3768 ENUMDOC
3769 Motorola 68HC11 reloc.
3770 This is the 3 bit of a value.
3771 ENUM
3772 BFD_RELOC_M68HC11_RL_JUMP
3773 ENUMDOC
3774 Motorola 68HC11 reloc.
3775 This reloc marks the beginning of a jump/call instruction.
3776 It is used for linker relaxation to correctly identify beginning
3777 of instruction and change some branches to use PC-relative
3778 addressing mode.
3779 ENUM
3780 BFD_RELOC_M68HC11_RL_GROUP
3781 ENUMDOC
3782 Motorola 68HC11 reloc.
3783 This reloc marks a group of several instructions that gcc generates
3784 and for which the linker relaxation pass can modify and/or remove
3785 some of them.
3786 ENUM
3787 BFD_RELOC_M68HC11_LO16
3788 ENUMDOC
3789 Motorola 68HC11 reloc.
3790 This is the 16-bit lower part of an address. It is used for 'call'
3791 instruction to specify the symbol address without any special
3792 transformation (due to memory bank window).
3793 ENUM
3794 BFD_RELOC_M68HC11_PAGE
3795 ENUMDOC
3796 Motorola 68HC11 reloc.
3797 This is a 8-bit reloc that specifies the page number of an address.
3798 It is used by 'call' instruction to specify the page number of
3799 the symbol.
3800 ENUM
3801 BFD_RELOC_M68HC11_24
3802 ENUMDOC
3803 Motorola 68HC11 reloc.
3804 This is a 24-bit reloc that represents the address with a 16-bit
3805 value and a 8-bit page number. The symbol address is transformed
3806 to follow the 16K memory bank of 68HC12 (seen as mapped in the window).
3807 ENUM
3808 BFD_RELOC_M68HC12_5B
3809 ENUMDOC
3810 Motorola 68HC12 reloc.
3811 This is the 5 bits of a value.
3812
3813 ENUM
3814 BFD_RELOC_16C_NUM08
3815 ENUMX
3816 BFD_RELOC_16C_NUM08_C
3817 ENUMX
3818 BFD_RELOC_16C_NUM16
3819 ENUMX
3820 BFD_RELOC_16C_NUM16_C
3821 ENUMX
3822 BFD_RELOC_16C_NUM32
3823 ENUMX
3824 BFD_RELOC_16C_NUM32_C
3825 ENUMX
3826 BFD_RELOC_16C_DISP04
3827 ENUMX
3828 BFD_RELOC_16C_DISP04_C
3829 ENUMX
3830 BFD_RELOC_16C_DISP08
3831 ENUMX
3832 BFD_RELOC_16C_DISP08_C
3833 ENUMX
3834 BFD_RELOC_16C_DISP16
3835 ENUMX
3836 BFD_RELOC_16C_DISP16_C
3837 ENUMX
3838 BFD_RELOC_16C_DISP24
3839 ENUMX
3840 BFD_RELOC_16C_DISP24_C
3841 ENUMX
3842 BFD_RELOC_16C_DISP24a
3843 ENUMX
3844 BFD_RELOC_16C_DISP24a_C
3845 ENUMX
3846 BFD_RELOC_16C_REG04
3847 ENUMX
3848 BFD_RELOC_16C_REG04_C
3849 ENUMX
3850 BFD_RELOC_16C_REG04a
3851 ENUMX
3852 BFD_RELOC_16C_REG04a_C
3853 ENUMX
3854 BFD_RELOC_16C_REG14
3855 ENUMX
3856 BFD_RELOC_16C_REG14_C
3857 ENUMX
3858 BFD_RELOC_16C_REG16
3859 ENUMX
3860 BFD_RELOC_16C_REG16_C
3861 ENUMX
3862 BFD_RELOC_16C_REG20
3863 ENUMX
3864 BFD_RELOC_16C_REG20_C
3865 ENUMX
3866 BFD_RELOC_16C_ABS20
3867 ENUMX
3868 BFD_RELOC_16C_ABS20_C
3869 ENUMX
3870 BFD_RELOC_16C_ABS24
3871 ENUMX
3872 BFD_RELOC_16C_ABS24_C
3873 ENUMX
3874 BFD_RELOC_16C_IMM04
3875 ENUMX
3876 BFD_RELOC_16C_IMM04_C
3877 ENUMX
3878 BFD_RELOC_16C_IMM16
3879 ENUMX
3880 BFD_RELOC_16C_IMM16_C
3881 ENUMX
3882 BFD_RELOC_16C_IMM20
3883 ENUMX
3884 BFD_RELOC_16C_IMM20_C
3885 ENUMX
3886 BFD_RELOC_16C_IMM24
3887 ENUMX
3888 BFD_RELOC_16C_IMM24_C
3889 ENUMX
3890 BFD_RELOC_16C_IMM32
3891 ENUMX
3892 BFD_RELOC_16C_IMM32_C
3893 ENUMDOC
3894 NS CR16C Relocations.
3895
3896 ENUM
3897 BFD_RELOC_CRX_REL4
3898 ENUMX
3899 BFD_RELOC_CRX_REL8
3900 ENUMX
3901 BFD_RELOC_CRX_REL8_CMP
3902 ENUMX
3903 BFD_RELOC_CRX_REL16
3904 ENUMX
3905 BFD_RELOC_CRX_REL24
3906 ENUMX
3907 BFD_RELOC_CRX_REL32
3908 ENUMX
3909 BFD_RELOC_CRX_REGREL12
3910 ENUMX
3911 BFD_RELOC_CRX_REGREL22
3912 ENUMX
3913 BFD_RELOC_CRX_REGREL28
3914 ENUMX
3915 BFD_RELOC_CRX_REGREL32
3916 ENUMX
3917 BFD_RELOC_CRX_ABS16
3918 ENUMX
3919 BFD_RELOC_CRX_ABS32
3920 ENUMX
3921 BFD_RELOC_CRX_NUM8
3922 ENUMX
3923 BFD_RELOC_CRX_NUM16
3924 ENUMX
3925 BFD_RELOC_CRX_NUM32
3926 ENUMX
3927 BFD_RELOC_CRX_IMM16
3928 ENUMX
3929 BFD_RELOC_CRX_IMM32
3930 ENUMX
3931 BFD_RELOC_CRX_SWITCH8
3932 ENUMX
3933 BFD_RELOC_CRX_SWITCH16
3934 ENUMX
3935 BFD_RELOC_CRX_SWITCH32
3936 ENUMDOC
3937 NS CRX Relocations.
3938
3939 ENUM
3940 BFD_RELOC_CRIS_BDISP8
3941 ENUMX
3942 BFD_RELOC_CRIS_UNSIGNED_5
3943 ENUMX
3944 BFD_RELOC_CRIS_SIGNED_6
3945 ENUMX
3946 BFD_RELOC_CRIS_UNSIGNED_6
3947 ENUMX
3948 BFD_RELOC_CRIS_UNSIGNED_4
3949 ENUMDOC
3950 These relocs are only used within the CRIS assembler. They are not
3951 (at present) written to any object files.
3952 ENUM
3953 BFD_RELOC_CRIS_COPY
3954 ENUMX
3955 BFD_RELOC_CRIS_GLOB_DAT
3956 ENUMX
3957 BFD_RELOC_CRIS_JUMP_SLOT
3958 ENUMX
3959 BFD_RELOC_CRIS_RELATIVE
3960 ENUMDOC
3961 Relocs used in ELF shared libraries for CRIS.
3962 ENUM
3963 BFD_RELOC_CRIS_32_GOT
3964 ENUMDOC
3965 32-bit offset to symbol-entry within GOT.
3966 ENUM
3967 BFD_RELOC_CRIS_16_GOT
3968 ENUMDOC
3969 16-bit offset to symbol-entry within GOT.
3970 ENUM
3971 BFD_RELOC_CRIS_32_GOTPLT
3972 ENUMDOC
3973 32-bit offset to symbol-entry within GOT, with PLT handling.
3974 ENUM
3975 BFD_RELOC_CRIS_16_GOTPLT
3976 ENUMDOC
3977 16-bit offset to symbol-entry within GOT, with PLT handling.
3978 ENUM
3979 BFD_RELOC_CRIS_32_GOTREL
3980 ENUMDOC
3981 32-bit offset to symbol, relative to GOT.
3982 ENUM
3983 BFD_RELOC_CRIS_32_PLT_GOTREL
3984 ENUMDOC
3985 32-bit offset to symbol with PLT entry, relative to GOT.
3986 ENUM
3987 BFD_RELOC_CRIS_32_PLT_PCREL
3988 ENUMDOC
3989 32-bit offset to symbol with PLT entry, relative to this relocation.
3990
3991 ENUM
3992 BFD_RELOC_860_COPY
3993 ENUMX
3994 BFD_RELOC_860_GLOB_DAT
3995 ENUMX
3996 BFD_RELOC_860_JUMP_SLOT
3997 ENUMX
3998 BFD_RELOC_860_RELATIVE
3999 ENUMX
4000 BFD_RELOC_860_PC26
4001 ENUMX
4002 BFD_RELOC_860_PLT26
4003 ENUMX
4004 BFD_RELOC_860_PC16
4005 ENUMX
4006 BFD_RELOC_860_LOW0
4007 ENUMX
4008 BFD_RELOC_860_SPLIT0
4009 ENUMX
4010 BFD_RELOC_860_LOW1
4011 ENUMX
4012 BFD_RELOC_860_SPLIT1
4013 ENUMX
4014 BFD_RELOC_860_LOW2
4015 ENUMX
4016 BFD_RELOC_860_SPLIT2
4017 ENUMX
4018 BFD_RELOC_860_LOW3
4019 ENUMX
4020 BFD_RELOC_860_LOGOT0
4021 ENUMX
4022 BFD_RELOC_860_SPGOT0
4023 ENUMX
4024 BFD_RELOC_860_LOGOT1
4025 ENUMX
4026 BFD_RELOC_860_SPGOT1
4027 ENUMX
4028 BFD_RELOC_860_LOGOTOFF0
4029 ENUMX
4030 BFD_RELOC_860_SPGOTOFF0
4031 ENUMX
4032 BFD_RELOC_860_LOGOTOFF1
4033 ENUMX
4034 BFD_RELOC_860_SPGOTOFF1
4035 ENUMX
4036 BFD_RELOC_860_LOGOTOFF2
4037 ENUMX
4038 BFD_RELOC_860_LOGOTOFF3
4039 ENUMX
4040 BFD_RELOC_860_LOPC
4041 ENUMX
4042 BFD_RELOC_860_HIGHADJ
4043 ENUMX
4044 BFD_RELOC_860_HAGOT
4045 ENUMX
4046 BFD_RELOC_860_HAGOTOFF
4047 ENUMX
4048 BFD_RELOC_860_HAPC
4049 ENUMX
4050 BFD_RELOC_860_HIGH
4051 ENUMX
4052 BFD_RELOC_860_HIGOT
4053 ENUMX
4054 BFD_RELOC_860_HIGOTOFF
4055 ENUMDOC
4056 Intel i860 Relocations.
4057
4058 ENUM
4059 BFD_RELOC_OPENRISC_ABS_26
4060 ENUMX
4061 BFD_RELOC_OPENRISC_REL_26
4062 ENUMDOC
4063 OpenRISC Relocations.
4064
4065 ENUM
4066 BFD_RELOC_H8_DIR16A8
4067 ENUMX
4068 BFD_RELOC_H8_DIR16R8
4069 ENUMX
4070 BFD_RELOC_H8_DIR24A8
4071 ENUMX
4072 BFD_RELOC_H8_DIR24R8
4073 ENUMX
4074 BFD_RELOC_H8_DIR32A16
4075 ENUMDOC
4076 H8 elf Relocations.
4077
4078 ENUM
4079 BFD_RELOC_XSTORMY16_REL_12
4080 ENUMX
4081 BFD_RELOC_XSTORMY16_12
4082 ENUMX
4083 BFD_RELOC_XSTORMY16_24
4084 ENUMX
4085 BFD_RELOC_XSTORMY16_FPTR16
4086 ENUMDOC
4087 Sony Xstormy16 Relocations.
4088
4089 ENUM
4090 BFD_RELOC_VAX_GLOB_DAT
4091 ENUMX
4092 BFD_RELOC_VAX_JMP_SLOT
4093 ENUMX
4094 BFD_RELOC_VAX_RELATIVE
4095 ENUMDOC
4096 Relocations used by VAX ELF.
4097
4098 ENUM
4099 BFD_RELOC_MSP430_10_PCREL
4100 ENUMX
4101 BFD_RELOC_MSP430_16_PCREL
4102 ENUMX
4103 BFD_RELOC_MSP430_16
4104 ENUMX
4105 BFD_RELOC_MSP430_16_PCREL_BYTE
4106 ENUMX
4107 BFD_RELOC_MSP430_16_BYTE
4108 ENUMX
4109 BFD_RELOC_MSP430_2X_PCREL
4110 ENUMX
4111 BFD_RELOC_MSP430_RL_PCREL
4112 ENUMDOC
4113 msp430 specific relocation codes
4114
4115 ENUM
4116 BFD_RELOC_IQ2000_OFFSET_16
4117 ENUMX
4118 BFD_RELOC_IQ2000_OFFSET_21
4119 ENUMX
4120 BFD_RELOC_IQ2000_UHI16
4121 ENUMDOC
4122 IQ2000 Relocations.
4123
4124 ENUM
4125 BFD_RELOC_XTENSA_RTLD
4126 ENUMDOC
4127 Special Xtensa relocation used only by PLT entries in ELF shared
4128 objects to indicate that the runtime linker should set the value
4129 to one of its own internal functions or data structures.
4130 ENUM
4131 BFD_RELOC_XTENSA_GLOB_DAT
4132 ENUMX
4133 BFD_RELOC_XTENSA_JMP_SLOT
4134 ENUMX
4135 BFD_RELOC_XTENSA_RELATIVE
4136 ENUMDOC
4137 Xtensa relocations for ELF shared objects.
4138 ENUM
4139 BFD_RELOC_XTENSA_PLT
4140 ENUMDOC
4141 Xtensa relocation used in ELF object files for symbols that may require
4142 PLT entries. Otherwise, this is just a generic 32-bit relocation.
4143 ENUM
4144 BFD_RELOC_XTENSA_OP0
4145 ENUMX
4146 BFD_RELOC_XTENSA_OP1
4147 ENUMX
4148 BFD_RELOC_XTENSA_OP2
4149 ENUMDOC
4150 Generic Xtensa relocations. Only the operand number is encoded
4151 in the relocation. The details are determined by extracting the
4152 instruction opcode.
4153 ENUM
4154 BFD_RELOC_XTENSA_ASM_EXPAND
4155 ENUMDOC
4156 Xtensa relocation to mark that the assembler expanded the
4157 instructions from an original target. The expansion size is
4158 encoded in the reloc size.
4159 ENUM
4160 BFD_RELOC_XTENSA_ASM_SIMPLIFY
4161 ENUMDOC
4162 Xtensa relocation to mark that the linker should simplify
4163 assembler-expanded instructions. This is commonly used
4164 internally by the linker after analysis of a
4165 BFD_RELOC_XTENSA_ASM_EXPAND.
4166
4167 ENDSENUM
4168 BFD_RELOC_UNUSED
4169 CODE_FRAGMENT
4170 .
4171 .typedef enum bfd_reloc_code_real bfd_reloc_code_real_type;
4172 */
4173
4174 /*
4175 FUNCTION
4176 bfd_reloc_type_lookup
4177
4178 SYNOPSIS
4179 reloc_howto_type *bfd_reloc_type_lookup
4180 (bfd *abfd, bfd_reloc_code_real_type code);
4181
4182 DESCRIPTION
4183 Return a pointer to a howto structure which, when
4184 invoked, will perform the relocation @var{code} on data from the
4185 architecture noted.
4186
4187 */
4188
4189 reloc_howto_type *
4190 bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
4191 {
4192 return BFD_SEND (abfd, reloc_type_lookup, (abfd, code));
4193 }
4194
4195 static reloc_howto_type bfd_howto_32 =
4196 HOWTO (0, 00, 2, 32, FALSE, 0, complain_overflow_bitfield, 0, "VRT32", FALSE, 0xffffffff, 0xffffffff, TRUE);
4197
4198 /*
4199 INTERNAL_FUNCTION
4200 bfd_default_reloc_type_lookup
4201
4202 SYNOPSIS
4203 reloc_howto_type *bfd_default_reloc_type_lookup
4204 (bfd *abfd, bfd_reloc_code_real_type code);
4205
4206 DESCRIPTION
4207 Provides a default relocation lookup routine for any architecture.
4208
4209 */
4210
4211 reloc_howto_type *
4212 bfd_default_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
4213 {
4214 switch (code)
4215 {
4216 case BFD_RELOC_CTOR:
4217 /* The type of reloc used in a ctor, which will be as wide as the
4218 address - so either a 64, 32, or 16 bitter. */
4219 switch (bfd_get_arch_info (abfd)->bits_per_address)
4220 {
4221 case 64:
4222 BFD_FAIL ();
4223 case 32:
4224 return &bfd_howto_32;
4225 case 16:
4226 BFD_FAIL ();
4227 default:
4228 BFD_FAIL ();
4229 }
4230 default:
4231 BFD_FAIL ();
4232 }
4233 return NULL;
4234 }
4235
4236 /*
4237 FUNCTION
4238 bfd_get_reloc_code_name
4239
4240 SYNOPSIS
4241 const char *bfd_get_reloc_code_name (bfd_reloc_code_real_type code);
4242
4243 DESCRIPTION
4244 Provides a printable name for the supplied relocation code.
4245 Useful mainly for printing error messages.
4246 */
4247
4248 const char *
4249 bfd_get_reloc_code_name (bfd_reloc_code_real_type code)
4250 {
4251 if (code > BFD_RELOC_UNUSED)
4252 return 0;
4253 return bfd_reloc_code_real_names[code];
4254 }
4255
4256 /*
4257 INTERNAL_FUNCTION
4258 bfd_generic_relax_section
4259
4260 SYNOPSIS
4261 bfd_boolean bfd_generic_relax_section
4262 (bfd *abfd,
4263 asection *section,
4264 struct bfd_link_info *,
4265 bfd_boolean *);
4266
4267 DESCRIPTION
4268 Provides default handling for relaxing for back ends which
4269 don't do relaxing.
4270 */
4271
4272 bfd_boolean
4273 bfd_generic_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
4274 asection *section ATTRIBUTE_UNUSED,
4275 struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
4276 bfd_boolean *again)
4277 {
4278 *again = FALSE;
4279 return TRUE;
4280 }
4281
4282 /*
4283 INTERNAL_FUNCTION
4284 bfd_generic_gc_sections
4285
4286 SYNOPSIS
4287 bfd_boolean bfd_generic_gc_sections
4288 (bfd *, struct bfd_link_info *);
4289
4290 DESCRIPTION
4291 Provides default handling for relaxing for back ends which
4292 don't do section gc -- i.e., does nothing.
4293 */
4294
4295 bfd_boolean
4296 bfd_generic_gc_sections (bfd *abfd ATTRIBUTE_UNUSED,
4297 struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4298 {
4299 return TRUE;
4300 }
4301
4302 /*
4303 INTERNAL_FUNCTION
4304 bfd_generic_merge_sections
4305
4306 SYNOPSIS
4307 bfd_boolean bfd_generic_merge_sections
4308 (bfd *, struct bfd_link_info *);
4309
4310 DESCRIPTION
4311 Provides default handling for SEC_MERGE section merging for back ends
4312 which don't have SEC_MERGE support -- i.e., does nothing.
4313 */
4314
4315 bfd_boolean
4316 bfd_generic_merge_sections (bfd *abfd ATTRIBUTE_UNUSED,
4317 struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
4318 {
4319 return TRUE;
4320 }
4321
4322 /*
4323 INTERNAL_FUNCTION
4324 bfd_generic_get_relocated_section_contents
4325
4326 SYNOPSIS
4327 bfd_byte *bfd_generic_get_relocated_section_contents
4328 (bfd *abfd,
4329 struct bfd_link_info *link_info,
4330 struct bfd_link_order *link_order,
4331 bfd_byte *data,
4332 bfd_boolean relocatable,
4333 asymbol **symbols);
4334
4335 DESCRIPTION
4336 Provides default handling of relocation effort for back ends
4337 which can't be bothered to do it efficiently.
4338
4339 */
4340
4341 bfd_byte *
4342 bfd_generic_get_relocated_section_contents (bfd *abfd,
4343 struct bfd_link_info *link_info,
4344 struct bfd_link_order *link_order,
4345 bfd_byte *data,
4346 bfd_boolean relocatable,
4347 asymbol **symbols)
4348 {
4349 /* Get enough memory to hold the stuff. */
4350 bfd *input_bfd = link_order->u.indirect.section->owner;
4351 asection *input_section = link_order->u.indirect.section;
4352
4353 long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
4354 arelent **reloc_vector = NULL;
4355 long reloc_count;
4356 bfd_size_type sz;
4357
4358 if (reloc_size < 0)
4359 goto error_return;
4360
4361 reloc_vector = bfd_malloc (reloc_size);
4362 if (reloc_vector == NULL && reloc_size != 0)
4363 goto error_return;
4364
4365 /* Read in the section. */
4366 sz = input_section->rawsize ? input_section->rawsize : input_section->size;
4367 if (!bfd_get_section_contents (input_bfd, input_section, data, 0, sz))
4368 goto error_return;
4369
4370 reloc_count = bfd_canonicalize_reloc (input_bfd,
4371 input_section,
4372 reloc_vector,
4373 symbols);
4374 if (reloc_count < 0)
4375 goto error_return;
4376
4377 if (reloc_count > 0)
4378 {
4379 arelent **parent;
4380 for (parent = reloc_vector; *parent != NULL; parent++)
4381 {
4382 char *error_message = NULL;
4383 bfd_reloc_status_type r =
4384 bfd_perform_relocation (input_bfd,
4385 *parent,
4386 data,
4387 input_section,
4388 relocatable ? abfd : NULL,
4389 &error_message);
4390
4391 if (relocatable)
4392 {
4393 asection *os = input_section->output_section;
4394
4395 /* A partial link, so keep the relocs. */
4396 os->orelocation[os->reloc_count] = *parent;
4397 os->reloc_count++;
4398 }
4399
4400 if (r != bfd_reloc_ok)
4401 {
4402 switch (r)
4403 {
4404 case bfd_reloc_undefined:
4405 if (!((*link_info->callbacks->undefined_symbol)
4406 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4407 input_bfd, input_section, (*parent)->address,
4408 TRUE)))
4409 goto error_return;
4410 break;
4411 case bfd_reloc_dangerous:
4412 BFD_ASSERT (error_message != NULL);
4413 if (!((*link_info->callbacks->reloc_dangerous)
4414 (link_info, error_message, input_bfd, input_section,
4415 (*parent)->address)))
4416 goto error_return;
4417 break;
4418 case bfd_reloc_overflow:
4419 if (!((*link_info->callbacks->reloc_overflow)
4420 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
4421 (*parent)->howto->name, (*parent)->addend,
4422 input_bfd, input_section, (*parent)->address)))
4423 goto error_return;
4424 break;
4425 case bfd_reloc_outofrange:
4426 default:
4427 abort ();
4428 break;
4429 }
4430
4431 }
4432 }
4433 }
4434 if (reloc_vector != NULL)
4435 free (reloc_vector);
4436 return data;
4437
4438 error_return:
4439 if (reloc_vector != NULL)
4440 free (reloc_vector);
4441 return NULL;
4442 }
GDB Binutils - Deliverables
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