* pe-dll.c (make_import_fixup_mark): Avoid type-punned pointer.
[binutils.git] / bfd / reloc.c
blob71f17402be095b7508a2cdde607d3e212279e7a4
1 /* BFD support for handling relocation entries.
2 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002
4 Free Software Foundation, Inc.
5 Written by Cygnus Support.
7 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
24 SECTION
25 Relocations
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.
33 Relocations are maintained on a per section basis,
34 while symbols are maintained on a per BFD basis.
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.
40 @menu
41 @* typedef arelent::
42 @* howto manager::
43 @end menu
47 /* DO compile in the reloc_code name table from libbfd.h. */
48 #define _BFD_MAKE_TABLE_bfd_reloc_code_real
50 #include "bfd.h"
51 #include "sysdep.h"
52 #include "bfdlink.h"
53 #include "libbfd.h"
55 DOCDD
56 INODE
57 typedef arelent, howto manager, Relocations, Relocations
59 SUBSECTION
60 typedef arelent
62 This is the structure of a relocation entry:
64 CODE_FRAGMENT
66 .typedef enum bfd_reloc_status
68 . {* No errors detected. *}
69 . bfd_reloc_ok,
71 . {* The relocation was performed, but there was an overflow. *}
72 . bfd_reloc_overflow,
74 . {* The address to relocate was not within the section supplied. *}
75 . bfd_reloc_outofrange,
77 . {* Used by special functions. *}
78 . bfd_reloc_continue,
80 . {* Unsupported relocation size requested. *}
81 . bfd_reloc_notsupported,
83 . {* Unused. *}
84 . bfd_reloc_other,
86 . {* The symbol to relocate against was undefined. *}
87 . bfd_reloc_undefined,
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;
98 .typedef struct reloc_cache_entry
100 . {* A pointer into the canonical table of pointers. *}
101 . struct symbol_cache_entry **sym_ptr_ptr;
103 . {* offset in section. *}
104 . bfd_size_type address;
106 . {* addend for relocation value. *}
107 . bfd_vma addend;
109 . {* Pointer to how to perform the required relocation. *}
110 . reloc_howto_type *howto;
113 .arelent;
118 DESCRIPTION
120 Here is a description of each of the fields within an <<arelent>>:
122 o <<sym_ptr_ptr>>
124 The symbol table pointer points to a pointer to the symbol
125 associated with the relocation request. It is
126 the pointer into the table returned by the back end's
127 <<get_symtab>> action. @xref{Symbols}. The symbol is referenced
128 through a pointer to a pointer so that tools like the linker
129 can fix up all the symbols of the same name by modifying only
130 one pointer. The relocation routine looks in the symbol and
131 uses the base of the section the symbol is attached to and the
132 value of the symbol as the initial relocation offset. If the
133 symbol pointer is zero, then the section provided is looked up.
135 o <<address>>
137 The <<address>> field gives the offset in bytes from the base of
138 the section data which owns the relocation record to the first
139 byte of relocatable information. The actual data relocated
140 will be relative to this point; for example, a relocation
141 type which modifies the bottom two bytes of a four byte word
142 would not touch the first byte pointed to in a big endian
143 world.
145 o <<addend>>
147 The <<addend>> is a value provided by the back end to be added (!)
148 to the relocation offset. Its interpretation is dependent upon
149 the howto. For example, on the 68k the code:
151 | char foo[];
152 | main()
154 | return foo[0x12345678];
157 Could be compiled into:
159 | linkw fp,#-4
160 | moveb @@#12345678,d0
161 | extbl d0
162 | unlk fp
163 | rts
165 This could create a reloc pointing to <<foo>>, but leave the
166 offset in the data, something like:
168 |RELOCATION RECORDS FOR [.text]:
169 |offset type value
170 |00000006 32 _foo
172 |00000000 4e56 fffc ; linkw fp,#-4
173 |00000004 1039 1234 5678 ; moveb @@#12345678,d0
174 |0000000a 49c0 ; extbl d0
175 |0000000c 4e5e ; unlk fp
176 |0000000e 4e75 ; rts
178 Using coff and an 88k, some instructions don't have enough
179 space in them to represent the full address range, and
180 pointers have to be loaded in two parts. So you'd get something like:
182 | or.u r13,r0,hi16(_foo+0x12345678)
183 | ld.b r2,r13,lo16(_foo+0x12345678)
184 | jmp r1
186 This should create two relocs, both pointing to <<_foo>>, and with
187 0x12340000 in their addend field. The data would consist of:
189 |RELOCATION RECORDS FOR [.text]:
190 |offset type value
191 |00000002 HVRT16 _foo+0x12340000
192 |00000006 LVRT16 _foo+0x12340000
194 |00000000 5da05678 ; or.u r13,r0,0x5678
195 |00000004 1c4d5678 ; ld.b r2,r13,0x5678
196 |00000008 f400c001 ; jmp r1
198 The relocation routine digs out the value from the data, adds
199 it to the addend to get the original offset, and then adds the
200 value of <<_foo>>. Note that all 32 bits have to be kept around
201 somewhere, to cope with carry from bit 15 to bit 16.
203 One further example is the sparc and the a.out format. The
204 sparc has a similar problem to the 88k, in that some
205 instructions don't have room for an entire offset, but on the
206 sparc the parts are created in odd sized lumps. The designers of
207 the a.out format chose to not use the data within the section
208 for storing part of the offset; all the offset is kept within
209 the reloc. Anything in the data should be ignored.
211 | save %sp,-112,%sp
212 | sethi %hi(_foo+0x12345678),%g2
213 | ldsb [%g2+%lo(_foo+0x12345678)],%i0
214 | ret
215 | restore
217 Both relocs contain a pointer to <<foo>>, and the offsets
218 contain junk.
220 |RELOCATION RECORDS FOR [.text]:
221 |offset type value
222 |00000004 HI22 _foo+0x12345678
223 |00000008 LO10 _foo+0x12345678
225 |00000000 9de3bf90 ; save %sp,-112,%sp
226 |00000004 05000000 ; sethi %hi(_foo+0),%g2
227 |00000008 f048a000 ; ldsb [%g2+%lo(_foo+0)],%i0
228 |0000000c 81c7e008 ; ret
229 |00000010 81e80000 ; restore
231 o <<howto>>
233 The <<howto>> field can be imagined as a
234 relocation instruction. It is a pointer to a structure which
235 contains information on what to do with all of the other
236 information in the reloc record and data section. A back end
237 would normally have a relocation instruction set and turn
238 relocations into pointers to the correct structure on input -
239 but it would be possible to create each howto field on demand.
244 SUBSUBSECTION
245 <<enum complain_overflow>>
247 Indicates what sort of overflow checking should be done when
248 performing a relocation.
250 CODE_FRAGMENT
252 .enum complain_overflow
254 . {* Do not complain on overflow. *}
255 . complain_overflow_dont,
257 . {* Complain if the bitfield overflows, whether it is considered
258 . as signed or unsigned. *}
259 . complain_overflow_bitfield,
261 . {* Complain if the value overflows when considered as signed
262 . number. *}
263 . complain_overflow_signed,
265 . {* Complain if the value overflows when considered as an
266 . unsigned number. *}
267 . complain_overflow_unsigned
273 SUBSUBSECTION
274 <<reloc_howto_type>>
276 The <<reloc_howto_type>> is a structure which contains all the
277 information that libbfd needs to know to tie up a back end's data.
279 CODE_FRAGMENT
280 .struct symbol_cache_entry; {* Forward declaration. *}
282 .struct reloc_howto_struct
284 . {* The type field has mainly a documentary use - the back end can
285 . do what it wants with it, though normally the back end's
286 . external idea of what a reloc number is stored
287 . in this field. For example, a PC relative word relocation
288 . in a coff environment has the type 023 - because that's
289 . what the outside world calls a R_PCRWORD reloc. *}
290 . unsigned int type;
292 . {* The value the final relocation is shifted right by. This drops
293 . unwanted data from the relocation. *}
294 . unsigned int rightshift;
296 . {* The size of the item to be relocated. This is *not* a
297 . power-of-two measure. To get the number of bytes operated
298 . on by a type of relocation, use bfd_get_reloc_size. *}
299 . int size;
301 . {* The number of bits in the item to be relocated. This is used
302 . when doing overflow checking. *}
303 . unsigned int bitsize;
305 . {* Notes that the relocation is relative to the location in the
306 . data section of the addend. The relocation function will
307 . subtract from the relocation value the address of the location
308 . being relocated. *}
309 . boolean pc_relative;
311 . {* The bit position of the reloc value in the destination.
312 . The relocated value is left shifted by this amount. *}
313 . unsigned int bitpos;
315 . {* What type of overflow error should be checked for when
316 . relocating. *}
317 . enum complain_overflow complain_on_overflow;
319 . {* If this field is non null, then the supplied function is
320 . called rather than the normal function. This allows really
321 . strange relocation methods to be accomodated (e.g., i960 callj
322 . instructions). *}
323 . bfd_reloc_status_type (*special_function)
324 . PARAMS ((bfd *, arelent *, struct symbol_cache_entry *, PTR, asection *,
325 . bfd *, char **));
327 . {* The textual name of the relocation type. *}
328 . char *name;
330 . {* Some formats record a relocation addend in the section contents
331 . rather than with the relocation. For ELF formats this is the
332 . distinction between USE_REL and USE_RELA (though the code checks
333 . for USE_REL == 1/0). The value of this field is TRUE if the
334 . addend is recorded with the section contents; when performing a
335 . partial link (ld -r) the section contents (the data) will be
336 . modified. The value of this field is FALSE if addends are
337 . recorded with the relocation (in arelent.addend); when performing
338 . a partial link the relocation will be modified.
339 . All relocations for all ELF USE_RELA targets should set this field
340 . to FALSE (values of TRUE should be looked on with suspicion).
341 . However, the converse is not true: not all relocations of all ELF
342 . USE_REL targets set this field to TRUE. Why this is so is peculiar
343 . to each particular target. For relocs that aren't used in partial
344 . links (e.g. GOT stuff) it doesn't matter what this is set to. *}
345 . boolean partial_inplace;
347 . {* The src_mask selects which parts of the read in data
348 . are to be used in the relocation sum. E.g., if this was an 8 bit
349 . byte of data which we read and relocated, this would be
350 . 0x000000ff. When we have relocs which have an addend, such as
351 . sun4 extended relocs, the value in the offset part of a
352 . relocating field is garbage so we never use it. In this case
353 . the mask would be 0x00000000. *}
354 . bfd_vma src_mask;
356 . {* The dst_mask selects which parts of the instruction are replaced
357 . into the instruction. In most cases src_mask == dst_mask,
358 . except in the above special case, where dst_mask would be
359 . 0x000000ff, and src_mask would be 0x00000000. *}
360 . bfd_vma dst_mask;
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 . boolean pcrel_offset;
374 FUNCTION
375 The HOWTO Macro
377 DESCRIPTION
378 The HOWTO define is horrible and will go away.
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 }
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.
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)
392 DESCRIPTION
393 This is used to fill in an empty howto entry in an array.
395 .#define EMPTY_HOWTO(C) \
396 . HOWTO ((C), 0, 0, 0, false, 0, complain_overflow_dont, NULL, \
397 . NULL, false, 0, 0, false)
400 DESCRIPTION
401 Helper routine to turn a symbol into a relocation value.
403 .#define HOWTO_PREPARE(relocation, symbol) \
404 . { \
405 . if (symbol != (asymbol *) NULL) \
406 . { \
407 . if (bfd_is_com_section (symbol->section)) \
408 . { \
409 . relocation = 0; \
410 . } \
411 . else \
412 . { \
413 . relocation = symbol->value; \
414 . } \
415 . } \
421 FUNCTION
422 bfd_get_reloc_size
424 SYNOPSIS
425 unsigned int bfd_get_reloc_size (reloc_howto_type *);
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.
432 unsigned int
433 bfd_get_reloc_size (howto)
434 reloc_howto_type *howto;
436 switch (howto->size)
438 case 0: return 1;
439 case 1: return 2;
440 case 2: return 4;
441 case 3: return 0;
442 case 4: return 8;
443 case 8: return 16;
444 case -2: return 4;
445 default: abort ();
450 TYPEDEF
451 arelent_chain
453 DESCRIPTION
455 How relocs are tied together in an <<asection>>:
457 .typedef struct relent_chain
459 . arelent relent;
460 . struct relent_chain *next;
462 .arelent_chain;
466 /* N_ONES produces N one bits, without overflowing machine arithmetic. */
467 #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1)
470 FUNCTION
471 bfd_check_overflow
473 SYNOPSIS
474 bfd_reloc_status_type
475 bfd_check_overflow
476 (enum complain_overflow how,
477 unsigned int bitsize,
478 unsigned int rightshift,
479 unsigned int addrsize,
480 bfd_vma relocation);
482 DESCRIPTION
483 Perform overflow checking on @var{relocation} which has
484 @var{bitsize} significant bits and will be shifted right by
485 @var{rightshift} bits, on a machine with addresses containing
486 @var{addrsize} significant bits. The result is either of
487 @code{bfd_reloc_ok} or @code{bfd_reloc_overflow}.
491 bfd_reloc_status_type
492 bfd_check_overflow (how, bitsize, rightshift, addrsize, relocation)
493 enum complain_overflow how;
494 unsigned int bitsize;
495 unsigned int rightshift;
496 unsigned int addrsize;
497 bfd_vma relocation;
499 bfd_vma fieldmask, addrmask, signmask, ss, a;
500 bfd_reloc_status_type flag = bfd_reloc_ok;
502 a = relocation;
504 /* Note: BITSIZE should always be <= ADDRSIZE, but in case it's not,
505 we'll be permissive: extra bits in the field mask will
506 automatically extend the address mask for purposes of the
507 overflow check. */
508 fieldmask = N_ONES (bitsize);
509 addrmask = N_ONES (addrsize) | fieldmask;
511 switch (how)
513 case complain_overflow_dont:
514 break;
516 case complain_overflow_signed:
517 /* If any sign bits are set, all sign bits must be set. That
518 is, A must be a valid negative address after shifting. */
519 a = (a & addrmask) >> rightshift;
520 signmask = ~ (fieldmask >> 1);
521 ss = a & signmask;
522 if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
523 flag = bfd_reloc_overflow;
524 break;
526 case complain_overflow_unsigned:
527 /* We have an overflow if the address does not fit in the field. */
528 a = (a & addrmask) >> rightshift;
529 if ((a & ~ fieldmask) != 0)
530 flag = bfd_reloc_overflow;
531 break;
533 case complain_overflow_bitfield:
534 /* Bitfields are sometimes signed, sometimes unsigned. We
535 explicitly allow an address wrap too, which means a bitfield
536 of n bits is allowed to store -2**n to 2**n-1. Thus overflow
537 if the value has some, but not all, bits set outside the
538 field. */
539 a >>= rightshift;
540 ss = a & ~ fieldmask;
541 if (ss != 0 && ss != (((bfd_vma) -1 >> rightshift) & ~ fieldmask))
542 flag = bfd_reloc_overflow;
543 break;
545 default:
546 abort ();
549 return flag;
553 FUNCTION
554 bfd_perform_relocation
556 SYNOPSIS
557 bfd_reloc_status_type
558 bfd_perform_relocation
559 (bfd *abfd,
560 arelent *reloc_entry,
561 PTR data,
562 asection *input_section,
563 bfd *output_bfd,
564 char **error_message);
566 DESCRIPTION
567 If @var{output_bfd} is supplied to this function, the
568 generated image will be relocatable; the relocations are
569 copied to the output file after they have been changed to
570 reflect the new state of the world. There are two ways of
571 reflecting the results of partial linkage in an output file:
572 by modifying the output data in place, and by modifying the
573 relocation record. Some native formats (e.g., basic a.out and
574 basic coff) have no way of specifying an addend in the
575 relocation type, so the addend has to go in the output data.
576 This is no big deal since in these formats the output data
577 slot will always be big enough for the addend. Complex reloc
578 types with addends were invented to solve just this problem.
579 The @var{error_message} argument is set to an error message if
580 this return @code{bfd_reloc_dangerous}.
584 bfd_reloc_status_type
585 bfd_perform_relocation (abfd, reloc_entry, data, input_section, output_bfd,
586 error_message)
587 bfd *abfd;
588 arelent *reloc_entry;
589 PTR data;
590 asection *input_section;
591 bfd *output_bfd;
592 char **error_message;
594 bfd_vma relocation;
595 bfd_reloc_status_type flag = bfd_reloc_ok;
596 bfd_size_type octets = reloc_entry->address * bfd_octets_per_byte (abfd);
597 bfd_vma output_base = 0;
598 reloc_howto_type *howto = reloc_entry->howto;
599 asection *reloc_target_output_section;
600 asymbol *symbol;
602 symbol = *(reloc_entry->sym_ptr_ptr);
603 if (bfd_is_abs_section (symbol->section)
604 && output_bfd != (bfd *) NULL)
606 reloc_entry->address += input_section->output_offset;
607 return bfd_reloc_ok;
610 /* If we are not producing relocateable output, return an error if
611 the symbol is not defined. An undefined weak symbol is
612 considered to have a value of zero (SVR4 ABI, p. 4-27). */
613 if (bfd_is_und_section (symbol->section)
614 && (symbol->flags & BSF_WEAK) == 0
615 && output_bfd == (bfd *) NULL)
616 flag = bfd_reloc_undefined;
618 /* If there is a function supplied to handle this relocation type,
619 call it. It'll return `bfd_reloc_continue' if further processing
620 can be done. */
621 if (howto->special_function)
623 bfd_reloc_status_type cont;
624 cont = howto->special_function (abfd, reloc_entry, symbol, data,
625 input_section, output_bfd,
626 error_message);
627 if (cont != bfd_reloc_continue)
628 return cont;
631 /* Is the address of the relocation really within the section? */
632 if (reloc_entry->address > (input_section->_cooked_size
633 / bfd_octets_per_byte (abfd)))
634 return bfd_reloc_outofrange;
636 /* Work out which section the relocation is targetted at and the
637 initial relocation command value. */
639 /* Get symbol value. (Common symbols are special.) */
640 if (bfd_is_com_section (symbol->section))
641 relocation = 0;
642 else
643 relocation = symbol->value;
645 reloc_target_output_section = symbol->section->output_section;
647 /* Convert input-section-relative symbol value to absolute. */
648 if (output_bfd && ! howto->partial_inplace)
649 output_base = 0;
650 else
651 output_base = reloc_target_output_section->vma;
653 relocation += output_base + symbol->section->output_offset;
655 /* Add in supplied addend. */
656 relocation += reloc_entry->addend;
658 /* Here the variable relocation holds the final address of the
659 symbol we are relocating against, plus any addend. */
661 if (howto->pc_relative)
663 /* This is a PC relative relocation. We want to set RELOCATION
664 to the distance between the address of the symbol and the
665 location. RELOCATION is already the address of the symbol.
667 We start by subtracting the address of the section containing
668 the location.
670 If pcrel_offset is set, we must further subtract the position
671 of the location within the section. Some targets arrange for
672 the addend to be the negative of the position of the location
673 within the section; for example, i386-aout does this. For
674 i386-aout, pcrel_offset is false. Some other targets do not
675 include the position of the location; for example, m88kbcs,
676 or ELF. For those targets, pcrel_offset is true.
678 If we are producing relocateable output, then we must ensure
679 that this reloc will be correctly computed when the final
680 relocation is done. If pcrel_offset is false we want to wind
681 up with the negative of the location within the section,
682 which means we must adjust the existing addend by the change
683 in the location within the section. If pcrel_offset is true
684 we do not want to adjust the existing addend at all.
686 FIXME: This seems logical to me, but for the case of
687 producing relocateable output it is not what the code
688 actually does. I don't want to change it, because it seems
689 far too likely that something will break. */
691 relocation -=
692 input_section->output_section->vma + input_section->output_offset;
694 if (howto->pcrel_offset)
695 relocation -= reloc_entry->address;
698 if (output_bfd != (bfd *) NULL)
700 if (! howto->partial_inplace)
702 /* This is a partial relocation, and we want to apply the relocation
703 to the reloc entry rather than the raw data. Modify the reloc
704 inplace to reflect what we now know. */
705 reloc_entry->addend = relocation;
706 reloc_entry->address += input_section->output_offset;
707 return flag;
709 else
711 /* This is a partial relocation, but inplace, so modify the
712 reloc record a bit.
714 If we've relocated with a symbol with a section, change
715 into a ref to the section belonging to the symbol. */
717 reloc_entry->address += input_section->output_offset;
719 /* WTF?? */
720 if (abfd->xvec->flavour == bfd_target_coff_flavour
721 && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
722 && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
724 #if 1
725 /* For m68k-coff, the addend was being subtracted twice during
726 relocation with -r. Removing the line below this comment
727 fixes that problem; see PR 2953.
729 However, Ian wrote the following, regarding removing the line below,
730 which explains why it is still enabled: --djm
732 If you put a patch like that into BFD you need to check all the COFF
733 linkers. I am fairly certain that patch will break coff-i386 (e.g.,
734 SCO); see coff_i386_reloc in coff-i386.c where I worked around the
735 problem in a different way. There may very well be a reason that the
736 code works as it does.
738 Hmmm. The first obvious point is that bfd_perform_relocation should
739 not have any tests that depend upon the flavour. It's seem like
740 entirely the wrong place for such a thing. The second obvious point
741 is that the current code ignores the reloc addend when producing
742 relocateable output for COFF. That's peculiar. In fact, I really
743 have no idea what the point of the line you want to remove is.
745 A typical COFF reloc subtracts the old value of the symbol and adds in
746 the new value to the location in the object file (if it's a pc
747 relative reloc it adds the difference between the symbol value and the
748 location). When relocating we need to preserve that property.
750 BFD handles this by setting the addend to the negative of the old
751 value of the symbol. Unfortunately it handles common symbols in a
752 non-standard way (it doesn't subtract the old value) but that's a
753 different story (we can't change it without losing backward
754 compatibility with old object files) (coff-i386 does subtract the old
755 value, to be compatible with existing coff-i386 targets, like SCO).
757 So everything works fine when not producing relocateable output. When
758 we are producing relocateable output, logically we should do exactly
759 what we do when not producing relocateable output. Therefore, your
760 patch is correct. In fact, it should probably always just set
761 reloc_entry->addend to 0 for all cases, since it is, in fact, going to
762 add the value into the object file. This won't hurt the COFF code,
763 which doesn't use the addend; I'm not sure what it will do to other
764 formats (the thing to check for would be whether any formats both use
765 the addend and set partial_inplace).
767 When I wanted to make coff-i386 produce relocateable output, I ran
768 into the problem that you are running into: I wanted to remove that
769 line. Rather than risk it, I made the coff-i386 relocs use a special
770 function; it's coff_i386_reloc in coff-i386.c. The function
771 specifically adds the addend field into the object file, knowing that
772 bfd_perform_relocation is not going to. If you remove that line, then
773 coff-i386.c will wind up adding the addend field in twice. It's
774 trivial to fix; it just needs to be done.
776 The problem with removing the line is just that it may break some
777 working code. With BFD it's hard to be sure of anything. The right
778 way to deal with this is simply to build and test at least all the
779 supported COFF targets. It should be straightforward if time and disk
780 space consuming. For each target:
781 1) build the linker
782 2) generate some executable, and link it using -r (I would
783 probably use paranoia.o and link against newlib/libc.a, which
784 for all the supported targets would be available in
785 /usr/cygnus/progressive/H-host/target/lib/libc.a).
786 3) make the change to reloc.c
787 4) rebuild the linker
788 5) repeat step 2
789 6) if the resulting object files are the same, you have at least
790 made it no worse
791 7) if they are different you have to figure out which version is
792 right
794 relocation -= reloc_entry->addend;
795 #endif
796 reloc_entry->addend = 0;
798 else
800 reloc_entry->addend = relocation;
804 else
806 reloc_entry->addend = 0;
809 /* FIXME: This overflow checking is incomplete, because the value
810 might have overflowed before we get here. For a correct check we
811 need to compute the value in a size larger than bitsize, but we
812 can't reasonably do that for a reloc the same size as a host
813 machine word.
814 FIXME: We should also do overflow checking on the result after
815 adding in the value contained in the object file. */
816 if (howto->complain_on_overflow != complain_overflow_dont
817 && flag == bfd_reloc_ok)
818 flag = bfd_check_overflow (howto->complain_on_overflow,
819 howto->bitsize,
820 howto->rightshift,
821 bfd_arch_bits_per_address (abfd),
822 relocation);
824 /* Either we are relocating all the way, or we don't want to apply
825 the relocation to the reloc entry (probably because there isn't
826 any room in the output format to describe addends to relocs). */
828 /* The cast to bfd_vma avoids a bug in the Alpha OSF/1 C compiler
829 (OSF version 1.3, compiler version 3.11). It miscompiles the
830 following program:
832 struct str
834 unsigned int i0;
835 } s = { 0 };
838 main ()
840 unsigned long x;
842 x = 0x100000000;
843 x <<= (unsigned long) s.i0;
844 if (x == 0)
845 printf ("failed\n");
846 else
847 printf ("succeeded (%lx)\n", x);
851 relocation >>= (bfd_vma) howto->rightshift;
853 /* Shift everything up to where it's going to be used. */
854 relocation <<= (bfd_vma) howto->bitpos;
856 /* Wait for the day when all have the mask in them. */
858 /* What we do:
859 i instruction to be left alone
860 o offset within instruction
861 r relocation offset to apply
862 S src mask
863 D dst mask
864 N ~dst mask
865 A part 1
866 B part 2
867 R result
869 Do this:
870 (( i i i i i o o o o o from bfd_get<size>
871 and S S S S S) to get the size offset we want
872 + r r r r r r r r r r) to get the final value to place
873 and D D D D D to chop to right size
874 -----------------------
875 = A A A A A
876 And this:
877 ( i i i i i o o o o o from bfd_get<size>
878 and N N N N N ) get instruction
879 -----------------------
880 = B B B B B
882 And then:
883 ( B B B B B
884 or A A A A A)
885 -----------------------
886 = R R R R R R R R R R put into bfd_put<size>
889 #define DOIT(x) \
890 x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask))
892 switch (howto->size)
894 case 0:
896 char x = bfd_get_8 (abfd, (char *) data + octets);
897 DOIT (x);
898 bfd_put_8 (abfd, x, (unsigned char *) data + octets);
900 break;
902 case 1:
904 short x = bfd_get_16 (abfd, (bfd_byte *) data + octets);
905 DOIT (x);
906 bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data + octets);
908 break;
909 case 2:
911 long x = bfd_get_32 (abfd, (bfd_byte *) data + octets);
912 DOIT (x);
913 bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
915 break;
916 case -2:
918 long x = bfd_get_32 (abfd, (bfd_byte *) data + octets);
919 relocation = -relocation;
920 DOIT (x);
921 bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
923 break;
925 case -1:
927 long x = bfd_get_16 (abfd, (bfd_byte *) data + octets);
928 relocation = -relocation;
929 DOIT (x);
930 bfd_put_16 (abfd, (bfd_vma) x, (bfd_byte *) data + octets);
932 break;
934 case 3:
935 /* Do nothing */
936 break;
938 case 4:
939 #ifdef BFD64
941 bfd_vma x = bfd_get_64 (abfd, (bfd_byte *) data + octets);
942 DOIT (x);
943 bfd_put_64 (abfd, x, (bfd_byte *) data + octets);
945 #else
946 abort ();
947 #endif
948 break;
949 default:
950 return bfd_reloc_other;
953 return flag;
957 FUNCTION
958 bfd_install_relocation
960 SYNOPSIS
961 bfd_reloc_status_type
962 bfd_install_relocation
963 (bfd *abfd,
964 arelent *reloc_entry,
965 PTR data, bfd_vma data_start,
966 asection *input_section,
967 char **error_message);
969 DESCRIPTION
970 This looks remarkably like <<bfd_perform_relocation>>, except it
971 does not expect that the section contents have been filled in.
972 I.e., it's suitable for use when creating, rather than applying
973 a relocation.
975 For now, this function should be considered reserved for the
976 assembler.
979 bfd_reloc_status_type
980 bfd_install_relocation (abfd, reloc_entry, data_start, data_start_offset,
981 input_section, error_message)
982 bfd *abfd;
983 arelent *reloc_entry;
984 PTR data_start;
985 bfd_vma data_start_offset;
986 asection *input_section;
987 char **error_message;
989 bfd_vma relocation;
990 bfd_reloc_status_type flag = bfd_reloc_ok;
991 bfd_size_type octets = reloc_entry->address * bfd_octets_per_byte (abfd);
992 bfd_vma output_base = 0;
993 reloc_howto_type *howto = reloc_entry->howto;
994 asection *reloc_target_output_section;
995 asymbol *symbol;
996 bfd_byte *data;
998 symbol = *(reloc_entry->sym_ptr_ptr);
999 if (bfd_is_abs_section (symbol->section))
1001 reloc_entry->address += input_section->output_offset;
1002 return bfd_reloc_ok;
1005 /* If there is a function supplied to handle this relocation type,
1006 call it. It'll return `bfd_reloc_continue' if further processing
1007 can be done. */
1008 if (howto->special_function)
1010 bfd_reloc_status_type cont;
1012 /* XXX - The special_function calls haven't been fixed up to deal
1013 with creating new relocations and section contents. */
1014 cont = howto->special_function (abfd, reloc_entry, symbol,
1015 /* XXX - Non-portable! */
1016 ((bfd_byte *) data_start
1017 - data_start_offset),
1018 input_section, abfd, error_message);
1019 if (cont != bfd_reloc_continue)
1020 return cont;
1023 /* Is the address of the relocation really within the section? */
1024 if (reloc_entry->address > (input_section->_cooked_size
1025 / bfd_octets_per_byte (abfd)))
1026 return bfd_reloc_outofrange;
1028 /* Work out which section the relocation is targetted at and the
1029 initial relocation command value. */
1031 /* Get symbol value. (Common symbols are special.) */
1032 if (bfd_is_com_section (symbol->section))
1033 relocation = 0;
1034 else
1035 relocation = symbol->value;
1037 reloc_target_output_section = symbol->section->output_section;
1039 /* Convert input-section-relative symbol value to absolute. */
1040 if (! howto->partial_inplace)
1041 output_base = 0;
1042 else
1043 output_base = reloc_target_output_section->vma;
1045 relocation += output_base + symbol->section->output_offset;
1047 /* Add in supplied addend. */
1048 relocation += reloc_entry->addend;
1050 /* Here the variable relocation holds the final address of the
1051 symbol we are relocating against, plus any addend. */
1053 if (howto->pc_relative)
1055 /* This is a PC relative relocation. We want to set RELOCATION
1056 to the distance between the address of the symbol and the
1057 location. RELOCATION is already the address of the symbol.
1059 We start by subtracting the address of the section containing
1060 the location.
1062 If pcrel_offset is set, we must further subtract the position
1063 of the location within the section. Some targets arrange for
1064 the addend to be the negative of the position of the location
1065 within the section; for example, i386-aout does this. For
1066 i386-aout, pcrel_offset is false. Some other targets do not
1067 include the position of the location; for example, m88kbcs,
1068 or ELF. For those targets, pcrel_offset is true.
1070 If we are producing relocateable output, then we must ensure
1071 that this reloc will be correctly computed when the final
1072 relocation is done. If pcrel_offset is false we want to wind
1073 up with the negative of the location within the section,
1074 which means we must adjust the existing addend by the change
1075 in the location within the section. If pcrel_offset is true
1076 we do not want to adjust the existing addend at all.
1078 FIXME: This seems logical to me, but for the case of
1079 producing relocateable output it is not what the code
1080 actually does. I don't want to change it, because it seems
1081 far too likely that something will break. */
1083 relocation -=
1084 input_section->output_section->vma + input_section->output_offset;
1086 if (howto->pcrel_offset && howto->partial_inplace)
1087 relocation -= reloc_entry->address;
1090 if (! howto->partial_inplace)
1092 /* This is a partial relocation, and we want to apply the relocation
1093 to the reloc entry rather than the raw data. Modify the reloc
1094 inplace to reflect what we now know. */
1095 reloc_entry->addend = relocation;
1096 reloc_entry->address += input_section->output_offset;
1097 return flag;
1099 else
1101 /* This is a partial relocation, but inplace, so modify the
1102 reloc record a bit.
1104 If we've relocated with a symbol with a section, change
1105 into a ref to the section belonging to the symbol. */
1106 reloc_entry->address += input_section->output_offset;
1108 /* WTF?? */
1109 if (abfd->xvec->flavour == bfd_target_coff_flavour
1110 && strcmp (abfd->xvec->name, "coff-Intel-little") != 0
1111 && strcmp (abfd->xvec->name, "coff-Intel-big") != 0)
1113 #if 1
1114 /* For m68k-coff, the addend was being subtracted twice during
1115 relocation with -r. Removing the line below this comment
1116 fixes that problem; see PR 2953.
1118 However, Ian wrote the following, regarding removing the line below,
1119 which explains why it is still enabled: --djm
1121 If you put a patch like that into BFD you need to check all the COFF
1122 linkers. I am fairly certain that patch will break coff-i386 (e.g.,
1123 SCO); see coff_i386_reloc in coff-i386.c where I worked around the
1124 problem in a different way. There may very well be a reason that the
1125 code works as it does.
1127 Hmmm. The first obvious point is that bfd_install_relocation should
1128 not have any tests that depend upon the flavour. It's seem like
1129 entirely the wrong place for such a thing. The second obvious point
1130 is that the current code ignores the reloc addend when producing
1131 relocateable output for COFF. That's peculiar. In fact, I really
1132 have no idea what the point of the line you want to remove is.
1134 A typical COFF reloc subtracts the old value of the symbol and adds in
1135 the new value to the location in the object file (if it's a pc
1136 relative reloc it adds the difference between the symbol value and the
1137 location). When relocating we need to preserve that property.
1139 BFD handles this by setting the addend to the negative of the old
1140 value of the symbol. Unfortunately it handles common symbols in a
1141 non-standard way (it doesn't subtract the old value) but that's a
1142 different story (we can't change it without losing backward
1143 compatibility with old object files) (coff-i386 does subtract the old
1144 value, to be compatible with existing coff-i386 targets, like SCO).
1146 So everything works fine when not producing relocateable output. When
1147 we are producing relocateable output, logically we should do exactly
1148 what we do when not producing relocateable output. Therefore, your
1149 patch is correct. In fact, it should probably always just set
1150 reloc_entry->addend to 0 for all cases, since it is, in fact, going to
1151 add the value into the object file. This won't hurt the COFF code,
1152 which doesn't use the addend; I'm not sure what it will do to other
1153 formats (the thing to check for would be whether any formats both use
1154 the addend and set partial_inplace).
1156 When I wanted to make coff-i386 produce relocateable output, I ran
1157 into the problem that you are running into: I wanted to remove that
1158 line. Rather than risk it, I made the coff-i386 relocs use a special
1159 function; it's coff_i386_reloc in coff-i386.c. The function
1160 specifically adds the addend field into the object file, knowing that
1161 bfd_install_relocation is not going to. If you remove that line, then
1162 coff-i386.c will wind up adding the addend field in twice. It's
1163 trivial to fix; it just needs to be done.
1165 The problem with removing the line is just that it may break some
1166 working code. With BFD it's hard to be sure of anything. The right
1167 way to deal with this is simply to build and test at least all the
1168 supported COFF targets. It should be straightforward if time and disk
1169 space consuming. For each target:
1170 1) build the linker
1171 2) generate some executable, and link it using -r (I would
1172 probably use paranoia.o and link against newlib/libc.a, which
1173 for all the supported targets would be available in
1174 /usr/cygnus/progressive/H-host/target/lib/libc.a).
1175 3) make the change to reloc.c
1176 4) rebuild the linker
1177 5) repeat step 2
1178 6) if the resulting object files are the same, you have at least
1179 made it no worse
1180 7) if they are different you have to figure out which version is
1181 right. */
1182 relocation -= reloc_entry->addend;
1183 #endif
1184 reloc_entry->addend = 0;
1186 else
1188 reloc_entry->addend = relocation;
1192 /* FIXME: This overflow checking is incomplete, because the value
1193 might have overflowed before we get here. For a correct check we
1194 need to compute the value in a size larger than bitsize, but we
1195 can't reasonably do that for a reloc the same size as a host
1196 machine word.
1197 FIXME: We should also do overflow checking on the result after
1198 adding in the value contained in the object file. */
1199 if (howto->complain_on_overflow != complain_overflow_dont)
1200 flag = bfd_check_overflow (howto->complain_on_overflow,
1201 howto->bitsize,
1202 howto->rightshift,
1203 bfd_arch_bits_per_address (abfd),
1204 relocation);
1206 /* Either we are relocating all the way, or we don't want to apply
1207 the relocation to the reloc entry (probably because there isn't
1208 any room in the output format to describe addends to relocs). */
1210 /* The cast to bfd_vma avoids a bug in the Alpha OSF/1 C compiler
1211 (OSF version 1.3, compiler version 3.11). It miscompiles the
1212 following program:
1214 struct str
1216 unsigned int i0;
1217 } s = { 0 };
1220 main ()
1222 unsigned long x;
1224 x = 0x100000000;
1225 x <<= (unsigned long) s.i0;
1226 if (x == 0)
1227 printf ("failed\n");
1228 else
1229 printf ("succeeded (%lx)\n", x);
1233 relocation >>= (bfd_vma) howto->rightshift;
1235 /* Shift everything up to where it's going to be used. */
1236 relocation <<= (bfd_vma) howto->bitpos;
1238 /* Wait for the day when all have the mask in them. */
1240 /* What we do:
1241 i instruction to be left alone
1242 o offset within instruction
1243 r relocation offset to apply
1244 S src mask
1245 D dst mask
1246 N ~dst mask
1247 A part 1
1248 B part 2
1249 R result
1251 Do this:
1252 (( i i i i i o o o o o from bfd_get<size>
1253 and S S S S S) to get the size offset we want
1254 + r r r r r r r r r r) to get the final value to place
1255 and D D D D D to chop to right size
1256 -----------------------
1257 = A A A A A
1258 And this:
1259 ( i i i i i o o o o o from bfd_get<size>
1260 and N N N N N ) get instruction
1261 -----------------------
1262 = B B B B B
1264 And then:
1265 ( B B B B B
1266 or A A A A A)
1267 -----------------------
1268 = R R R R R R R R R R put into bfd_put<size>
1271 #define DOIT(x) \
1272 x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask))
1274 data = (bfd_byte *) data_start + (octets - data_start_offset);
1276 switch (howto->size)
1278 case 0:
1280 char x = bfd_get_8 (abfd, (char *) data);
1281 DOIT (x);
1282 bfd_put_8 (abfd, x, (unsigned char *) data);
1284 break;
1286 case 1:
1288 short x = bfd_get_16 (abfd, (bfd_byte *) data);
1289 DOIT (x);
1290 bfd_put_16 (abfd, (bfd_vma) x, (unsigned char *) data);
1292 break;
1293 case 2:
1295 long x = bfd_get_32 (abfd, (bfd_byte *) data);
1296 DOIT (x);
1297 bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data);
1299 break;
1300 case -2:
1302 long x = bfd_get_32 (abfd, (bfd_byte *) data);
1303 relocation = -relocation;
1304 DOIT (x);
1305 bfd_put_32 (abfd, (bfd_vma) x, (bfd_byte *) data);
1307 break;
1309 case 3:
1310 /* Do nothing */
1311 break;
1313 case 4:
1315 bfd_vma x = bfd_get_64 (abfd, (bfd_byte *) data);
1316 DOIT (x);
1317 bfd_put_64 (abfd, x, (bfd_byte *) data);
1319 break;
1320 default:
1321 return bfd_reloc_other;
1324 return flag;
1327 /* This relocation routine is used by some of the backend linkers.
1328 They do not construct asymbol or arelent structures, so there is no
1329 reason for them to use bfd_perform_relocation. Also,
1330 bfd_perform_relocation is so hacked up it is easier to write a new
1331 function than to try to deal with it.
1333 This routine does a final relocation. Whether it is useful for a
1334 relocateable link depends upon how the object format defines
1335 relocations.
1337 FIXME: This routine ignores any special_function in the HOWTO,
1338 since the existing special_function values have been written for
1339 bfd_perform_relocation.
1341 HOWTO is the reloc howto information.
1342 INPUT_BFD is the BFD which the reloc applies to.
1343 INPUT_SECTION is the section which the reloc applies to.
1344 CONTENTS is the contents of the section.
1345 ADDRESS is the address of the reloc within INPUT_SECTION.
1346 VALUE is the value of the symbol the reloc refers to.
1347 ADDEND is the addend of the reloc. */
1349 bfd_reloc_status_type
1350 _bfd_final_link_relocate (howto, input_bfd, input_section, contents, address,
1351 value, addend)
1352 reloc_howto_type *howto;
1353 bfd *input_bfd;
1354 asection *input_section;
1355 bfd_byte *contents;
1356 bfd_vma address;
1357 bfd_vma value;
1358 bfd_vma addend;
1360 bfd_vma relocation;
1362 /* Sanity check the address. */
1363 if (address > input_section->_raw_size)
1364 return bfd_reloc_outofrange;
1366 /* This function assumes that we are dealing with a basic relocation
1367 against a symbol. We want to compute the value of the symbol to
1368 relocate to. This is just VALUE, the value of the symbol, plus
1369 ADDEND, any addend associated with the reloc. */
1370 relocation = value + addend;
1372 /* If the relocation is PC relative, we want to set RELOCATION to
1373 the distance between the symbol (currently in RELOCATION) and the
1374 location we are relocating. Some targets (e.g., i386-aout)
1375 arrange for the contents of the section to be the negative of the
1376 offset of the location within the section; for such targets
1377 pcrel_offset is false. Other targets (e.g., m88kbcs or ELF)
1378 simply leave the contents of the section as zero; for such
1379 targets pcrel_offset is true. If pcrel_offset is false we do not
1380 need to subtract out the offset of the location within the
1381 section (which is just ADDRESS). */
1382 if (howto->pc_relative)
1384 relocation -= (input_section->output_section->vma
1385 + input_section->output_offset);
1386 if (howto->pcrel_offset)
1387 relocation -= address;
1390 return _bfd_relocate_contents (howto, input_bfd, relocation,
1391 contents + address);
1394 /* Relocate a given location using a given value and howto. */
1396 bfd_reloc_status_type
1397 _bfd_relocate_contents (howto, input_bfd, relocation, location)
1398 reloc_howto_type *howto;
1399 bfd *input_bfd;
1400 bfd_vma relocation;
1401 bfd_byte *location;
1403 int size;
1404 bfd_vma x = 0;
1405 bfd_reloc_status_type flag;
1406 unsigned int rightshift = howto->rightshift;
1407 unsigned int bitpos = howto->bitpos;
1409 /* If the size is negative, negate RELOCATION. This isn't very
1410 general. */
1411 if (howto->size < 0)
1412 relocation = -relocation;
1414 /* Get the value we are going to relocate. */
1415 size = bfd_get_reloc_size (howto);
1416 switch (size)
1418 default:
1419 case 0:
1420 abort ();
1421 case 1:
1422 x = bfd_get_8 (input_bfd, location);
1423 break;
1424 case 2:
1425 x = bfd_get_16 (input_bfd, location);
1426 break;
1427 case 4:
1428 x = bfd_get_32 (input_bfd, location);
1429 break;
1430 case 8:
1431 #ifdef BFD64
1432 x = bfd_get_64 (input_bfd, location);
1433 #else
1434 abort ();
1435 #endif
1436 break;
1439 /* Check for overflow. FIXME: We may drop bits during the addition
1440 which we don't check for. We must either check at every single
1441 operation, which would be tedious, or we must do the computations
1442 in a type larger than bfd_vma, which would be inefficient. */
1443 flag = bfd_reloc_ok;
1444 if (howto->complain_on_overflow != complain_overflow_dont)
1446 bfd_vma addrmask, fieldmask, signmask, ss;
1447 bfd_vma a, b, sum;
1449 /* Get the values to be added together. For signed and unsigned
1450 relocations, we assume that all values should be truncated to
1451 the size of an address. For bitfields, all the bits matter.
1452 See also bfd_check_overflow. */
1453 fieldmask = N_ONES (howto->bitsize);
1454 addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask;
1455 a = relocation;
1456 b = x & howto->src_mask;
1458 switch (howto->complain_on_overflow)
1460 case complain_overflow_signed:
1461 a = (a & addrmask) >> rightshift;
1463 /* If any sign bits are set, all sign bits must be set.
1464 That is, A must be a valid negative address after
1465 shifting. */
1466 signmask = ~ (fieldmask >> 1);
1467 ss = a & signmask;
1468 if (ss != 0 && ss != ((addrmask >> rightshift) & signmask))
1469 flag = bfd_reloc_overflow;
1471 /* We only need this next bit of code if the sign bit of B
1472 is below the sign bit of A. This would only happen if
1473 SRC_MASK had fewer bits than BITSIZE. Note that if
1474 SRC_MASK has more bits than BITSIZE, we can get into
1475 trouble; we would need to verify that B is in range, as
1476 we do for A above. */
1477 signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1479 /* Set all the bits above the sign bit. */
1480 b = (b ^ signmask) - signmask;
1482 b = (b & addrmask) >> bitpos;
1484 /* Now we can do the addition. */
1485 sum = a + b;
1487 /* See if the result has the correct sign. Bits above the
1488 sign bit are junk now; ignore them. If the sum is
1489 positive, make sure we did not have all negative inputs;
1490 if the sum is negative, make sure we did not have all
1491 positive inputs. The test below looks only at the sign
1492 bits, and it really just
1493 SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
1495 signmask = (fieldmask >> 1) + 1;
1496 if (((~ (a ^ b)) & (a ^ sum)) & signmask)
1497 flag = bfd_reloc_overflow;
1499 break;
1501 case complain_overflow_unsigned:
1502 /* Checking for an unsigned overflow is relatively easy:
1503 trim the addresses and add, and trim the result as well.
1504 Overflow is normally indicated when the result does not
1505 fit in the field. However, we also need to consider the
1506 case when, e.g., fieldmask is 0x7fffffff or smaller, an
1507 input is 0x80000000, and bfd_vma is only 32 bits; then we
1508 will get sum == 0, but there is an overflow, since the
1509 inputs did not fit in the field. Instead of doing a
1510 separate test, we can check for this by or-ing in the
1511 operands when testing for the sum overflowing its final
1512 field. */
1513 a = (a & addrmask) >> rightshift;
1514 b = (b & addrmask) >> bitpos;
1515 sum = (a + b) & addrmask;
1516 if ((a | b | sum) & ~ fieldmask)
1517 flag = bfd_reloc_overflow;
1519 break;
1521 case complain_overflow_bitfield:
1522 /* Much like the signed check, but for a field one bit
1523 wider, and no trimming inputs with addrmask. We allow a
1524 bitfield to represent numbers in the range -2**n to
1525 2**n-1, where n is the number of bits in the field.
1526 Note that when bfd_vma is 32 bits, a 32-bit reloc can't
1527 overflow, which is exactly what we want. */
1528 a >>= rightshift;
1530 signmask = ~ fieldmask;
1531 ss = a & signmask;
1532 if (ss != 0 && ss != (((bfd_vma) -1 >> rightshift) & signmask))
1533 flag = bfd_reloc_overflow;
1535 signmask = ((~ howto->src_mask) >> 1) & howto->src_mask;
1536 b = (b ^ signmask) - signmask;
1538 b >>= bitpos;
1540 sum = a + b;
1542 /* We mask with addrmask here to explicitly allow an address
1543 wrap-around. The Linux kernel relies on it, and it is
1544 the only way to write assembler code which can run when
1545 loaded at a location 0x80000000 away from the location at
1546 which it is linked. */
1547 signmask = fieldmask + 1;
1548 if (((~ (a ^ b)) & (a ^ sum)) & signmask & addrmask)
1549 flag = bfd_reloc_overflow;
1551 break;
1553 default:
1554 abort ();
1558 /* Put RELOCATION in the right bits. */
1559 relocation >>= (bfd_vma) rightshift;
1560 relocation <<= (bfd_vma) bitpos;
1562 /* Add RELOCATION to the right bits of X. */
1563 x = ((x & ~howto->dst_mask)
1564 | (((x & howto->src_mask) + relocation) & howto->dst_mask));
1566 /* Put the relocated value back in the object file. */
1567 switch (size)
1569 default:
1570 case 0:
1571 abort ();
1572 case 1:
1573 bfd_put_8 (input_bfd, x, location);
1574 break;
1575 case 2:
1576 bfd_put_16 (input_bfd, x, location);
1577 break;
1578 case 4:
1579 bfd_put_32 (input_bfd, x, location);
1580 break;
1581 case 8:
1582 #ifdef BFD64
1583 bfd_put_64 (input_bfd, x, location);
1584 #else
1585 abort ();
1586 #endif
1587 break;
1590 return flag;
1594 DOCDD
1595 INODE
1596 howto manager, , typedef arelent, Relocations
1598 SECTION
1599 The howto manager
1601 When an application wants to create a relocation, but doesn't
1602 know what the target machine might call it, it can find out by
1603 using this bit of code.
1608 TYPEDEF
1609 bfd_reloc_code_type
1611 DESCRIPTION
1612 The insides of a reloc code. The idea is that, eventually, there
1613 will be one enumerator for every type of relocation we ever do.
1614 Pass one of these values to <<bfd_reloc_type_lookup>>, and it'll
1615 return a howto pointer.
1617 This does mean that the application must determine the correct
1618 enumerator value; you can't get a howto pointer from a random set
1619 of attributes.
1621 SENUM
1622 bfd_reloc_code_real
1624 ENUM
1625 BFD_RELOC_64
1626 ENUMX
1627 BFD_RELOC_32
1628 ENUMX
1629 BFD_RELOC_26
1630 ENUMX
1631 BFD_RELOC_24
1632 ENUMX
1633 BFD_RELOC_16
1634 ENUMX
1635 BFD_RELOC_14
1636 ENUMX
1637 BFD_RELOC_8
1638 ENUMDOC
1639 Basic absolute relocations of N bits.
1641 ENUM
1642 BFD_RELOC_64_PCREL
1643 ENUMX
1644 BFD_RELOC_32_PCREL
1645 ENUMX
1646 BFD_RELOC_24_PCREL
1647 ENUMX
1648 BFD_RELOC_16_PCREL
1649 ENUMX
1650 BFD_RELOC_12_PCREL
1651 ENUMX
1652 BFD_RELOC_8_PCREL
1653 ENUMDOC
1654 PC-relative relocations. Sometimes these are relative to the address
1655 of the relocation itself; sometimes they are relative to the start of
1656 the section containing the relocation. It depends on the specific target.
1658 The 24-bit relocation is used in some Intel 960 configurations.
1660 ENUM
1661 BFD_RELOC_32_GOT_PCREL
1662 ENUMX
1663 BFD_RELOC_16_GOT_PCREL
1664 ENUMX
1665 BFD_RELOC_8_GOT_PCREL
1666 ENUMX
1667 BFD_RELOC_32_GOTOFF
1668 ENUMX
1669 BFD_RELOC_16_GOTOFF
1670 ENUMX
1671 BFD_RELOC_LO16_GOTOFF
1672 ENUMX
1673 BFD_RELOC_HI16_GOTOFF
1674 ENUMX
1675 BFD_RELOC_HI16_S_GOTOFF
1676 ENUMX
1677 BFD_RELOC_8_GOTOFF
1678 ENUMX
1679 BFD_RELOC_64_PLT_PCREL
1680 ENUMX
1681 BFD_RELOC_32_PLT_PCREL
1682 ENUMX
1683 BFD_RELOC_24_PLT_PCREL
1684 ENUMX
1685 BFD_RELOC_16_PLT_PCREL
1686 ENUMX
1687 BFD_RELOC_8_PLT_PCREL
1688 ENUMX
1689 BFD_RELOC_64_PLTOFF
1690 ENUMX
1691 BFD_RELOC_32_PLTOFF
1692 ENUMX
1693 BFD_RELOC_16_PLTOFF
1694 ENUMX
1695 BFD_RELOC_LO16_PLTOFF
1696 ENUMX
1697 BFD_RELOC_HI16_PLTOFF
1698 ENUMX
1699 BFD_RELOC_HI16_S_PLTOFF
1700 ENUMX
1701 BFD_RELOC_8_PLTOFF
1702 ENUMDOC
1703 For ELF.
1705 ENUM
1706 BFD_RELOC_68K_GLOB_DAT
1707 ENUMX
1708 BFD_RELOC_68K_JMP_SLOT
1709 ENUMX
1710 BFD_RELOC_68K_RELATIVE
1711 ENUMDOC
1712 Relocations used by 68K ELF.
1714 ENUM
1715 BFD_RELOC_32_BASEREL
1716 ENUMX
1717 BFD_RELOC_16_BASEREL
1718 ENUMX
1719 BFD_RELOC_LO16_BASEREL
1720 ENUMX
1721 BFD_RELOC_HI16_BASEREL
1722 ENUMX
1723 BFD_RELOC_HI16_S_BASEREL
1724 ENUMX
1725 BFD_RELOC_8_BASEREL
1726 ENUMX
1727 BFD_RELOC_RVA
1728 ENUMDOC
1729 Linkage-table relative.
1731 ENUM
1732 BFD_RELOC_8_FFnn
1733 ENUMDOC
1734 Absolute 8-bit relocation, but used to form an address like 0xFFnn.
1736 ENUM
1737 BFD_RELOC_32_PCREL_S2
1738 ENUMX
1739 BFD_RELOC_16_PCREL_S2
1740 ENUMX
1741 BFD_RELOC_23_PCREL_S2
1742 ENUMDOC
1743 These PC-relative relocations are stored as word displacements --
1744 i.e., byte displacements shifted right two bits. The 30-bit word
1745 displacement (<<32_PCREL_S2>> -- 32 bits, shifted 2) is used on the
1746 SPARC. (SPARC tools generally refer to this as <<WDISP30>>.) The
1747 signed 16-bit displacement is used on the MIPS, and the 23-bit
1748 displacement is used on the Alpha.
1750 ENUM
1751 BFD_RELOC_HI22
1752 ENUMX
1753 BFD_RELOC_LO10
1754 ENUMDOC
1755 High 22 bits and low 10 bits of 32-bit value, placed into lower bits of
1756 the target word. These are used on the SPARC.
1758 ENUM
1759 BFD_RELOC_GPREL16
1760 ENUMX
1761 BFD_RELOC_GPREL32
1762 ENUMDOC
1763 For systems that allocate a Global Pointer register, these are
1764 displacements off that register. These relocation types are
1765 handled specially, because the value the register will have is
1766 decided relatively late.
1768 ENUM
1769 BFD_RELOC_I960_CALLJ
1770 ENUMDOC
1771 Reloc types used for i960/b.out.
1773 ENUM
1774 BFD_RELOC_NONE
1775 ENUMX
1776 BFD_RELOC_SPARC_WDISP22
1777 ENUMX
1778 BFD_RELOC_SPARC22
1779 ENUMX
1780 BFD_RELOC_SPARC13
1781 ENUMX
1782 BFD_RELOC_SPARC_GOT10
1783 ENUMX
1784 BFD_RELOC_SPARC_GOT13
1785 ENUMX
1786 BFD_RELOC_SPARC_GOT22
1787 ENUMX
1788 BFD_RELOC_SPARC_PC10
1789 ENUMX
1790 BFD_RELOC_SPARC_PC22
1791 ENUMX
1792 BFD_RELOC_SPARC_WPLT30
1793 ENUMX
1794 BFD_RELOC_SPARC_COPY
1795 ENUMX
1796 BFD_RELOC_SPARC_GLOB_DAT
1797 ENUMX
1798 BFD_RELOC_SPARC_JMP_SLOT
1799 ENUMX
1800 BFD_RELOC_SPARC_RELATIVE
1801 ENUMX
1802 BFD_RELOC_SPARC_UA16
1803 ENUMX
1804 BFD_RELOC_SPARC_UA32
1805 ENUMX
1806 BFD_RELOC_SPARC_UA64
1807 ENUMDOC
1808 SPARC ELF relocations. There is probably some overlap with other
1809 relocation types already defined.
1811 ENUM
1812 BFD_RELOC_SPARC_BASE13
1813 ENUMX
1814 BFD_RELOC_SPARC_BASE22
1815 ENUMDOC
1816 I think these are specific to SPARC a.out (e.g., Sun 4).
1818 ENUMEQ
1819 BFD_RELOC_SPARC_64
1820 BFD_RELOC_64
1821 ENUMX
1822 BFD_RELOC_SPARC_10
1823 ENUMX
1824 BFD_RELOC_SPARC_11
1825 ENUMX
1826 BFD_RELOC_SPARC_OLO10
1827 ENUMX
1828 BFD_RELOC_SPARC_HH22
1829 ENUMX
1830 BFD_RELOC_SPARC_HM10
1831 ENUMX
1832 BFD_RELOC_SPARC_LM22
1833 ENUMX
1834 BFD_RELOC_SPARC_PC_HH22
1835 ENUMX
1836 BFD_RELOC_SPARC_PC_HM10
1837 ENUMX
1838 BFD_RELOC_SPARC_PC_LM22
1839 ENUMX
1840 BFD_RELOC_SPARC_WDISP16
1841 ENUMX
1842 BFD_RELOC_SPARC_WDISP19
1843 ENUMX
1844 BFD_RELOC_SPARC_7
1845 ENUMX
1846 BFD_RELOC_SPARC_6
1847 ENUMX
1848 BFD_RELOC_SPARC_5
1849 ENUMEQX
1850 BFD_RELOC_SPARC_DISP64
1851 BFD_RELOC_64_PCREL
1852 ENUMX
1853 BFD_RELOC_SPARC_PLT32
1854 ENUMX
1855 BFD_RELOC_SPARC_PLT64
1856 ENUMX
1857 BFD_RELOC_SPARC_HIX22
1858 ENUMX
1859 BFD_RELOC_SPARC_LOX10
1860 ENUMX
1861 BFD_RELOC_SPARC_H44
1862 ENUMX
1863 BFD_RELOC_SPARC_M44
1864 ENUMX
1865 BFD_RELOC_SPARC_L44
1866 ENUMX
1867 BFD_RELOC_SPARC_REGISTER
1868 ENUMDOC
1869 SPARC64 relocations
1871 ENUM
1872 BFD_RELOC_SPARC_REV32
1873 ENUMDOC
1874 SPARC little endian relocation
1876 ENUM
1877 BFD_RELOC_ALPHA_GPDISP_HI16
1878 ENUMDOC
1879 Alpha ECOFF and ELF relocations. Some of these treat the symbol or
1880 "addend" in some special way.
1881 For GPDISP_HI16 ("gpdisp") relocations, the symbol is ignored when
1882 writing; when reading, it will be the absolute section symbol. The
1883 addend is the displacement in bytes of the "lda" instruction from
1884 the "ldah" instruction (which is at the address of this reloc).
1885 ENUM
1886 BFD_RELOC_ALPHA_GPDISP_LO16
1887 ENUMDOC
1888 For GPDISP_LO16 ("ignore") relocations, the symbol is handled as
1889 with GPDISP_HI16 relocs. The addend is ignored when writing the
1890 relocations out, and is filled in with the file's GP value on
1891 reading, for convenience.
1893 ENUM
1894 BFD_RELOC_ALPHA_GPDISP
1895 ENUMDOC
1896 The ELF GPDISP relocation is exactly the same as the GPDISP_HI16
1897 relocation except that there is no accompanying GPDISP_LO16
1898 relocation.
1900 ENUM
1901 BFD_RELOC_ALPHA_LITERAL
1902 ENUMX
1903 BFD_RELOC_ALPHA_ELF_LITERAL
1904 ENUMX
1905 BFD_RELOC_ALPHA_LITUSE
1906 ENUMDOC
1907 The Alpha LITERAL/LITUSE relocs are produced by a symbol reference;
1908 the assembler turns it into a LDQ instruction to load the address of
1909 the symbol, and then fills in a register in the real instruction.
1911 The LITERAL reloc, at the LDQ instruction, refers to the .lita
1912 section symbol. The addend is ignored when writing, but is filled
1913 in with the file's GP value on reading, for convenience, as with the
1914 GPDISP_LO16 reloc.
1916 The ELF_LITERAL reloc is somewhere between 16_GOTOFF and GPDISP_LO16.
1917 It should refer to the symbol to be referenced, as with 16_GOTOFF,
1918 but it generates output not based on the position within the .got
1919 section, but relative to the GP value chosen for the file during the
1920 final link stage.
1922 The LITUSE reloc, on the instruction using the loaded address, gives
1923 information to the linker that it might be able to use to optimize
1924 away some literal section references. The symbol is ignored (read
1925 as the absolute section symbol), and the "addend" indicates the type
1926 of instruction using the register:
1927 1 - "memory" fmt insn
1928 2 - byte-manipulation (byte offset reg)
1929 3 - jsr (target of branch)
1931 ENUM
1932 BFD_RELOC_ALPHA_HINT
1933 ENUMDOC
1934 The HINT relocation indicates a value that should be filled into the
1935 "hint" field of a jmp/jsr/ret instruction, for possible branch-
1936 prediction logic which may be provided on some processors.
1938 ENUM
1939 BFD_RELOC_ALPHA_LINKAGE
1940 ENUMDOC
1941 The LINKAGE relocation outputs a linkage pair in the object file,
1942 which is filled by the linker.
1944 ENUM
1945 BFD_RELOC_ALPHA_CODEADDR
1946 ENUMDOC
1947 The CODEADDR relocation outputs a STO_CA in the object file,
1948 which is filled by the linker.
1950 ENUM
1951 BFD_RELOC_ALPHA_GPREL_HI16
1952 ENUMX
1953 BFD_RELOC_ALPHA_GPREL_LO16
1954 ENUMDOC
1955 The GPREL_HI/LO relocations together form a 32-bit offset from the
1956 GP register.
1958 ENUM
1959 BFD_RELOC_ALPHA_BRSGP
1960 ENUMDOC
1961 Like BFD_RELOC_23_PCREL_S2, except that the source and target must
1962 share a common GP, and the target address is adjusted for
1963 STO_ALPHA_STD_GPLOAD.
1965 ENUM
1966 BFD_RELOC_ALPHA_TLSGD
1967 ENUMX
1968 BFD_RELOC_ALPHA_TLSLDM
1969 ENUMX
1970 BFD_RELOC_ALPHA_DTPMOD64
1971 ENUMX
1972 BFD_RELOC_ALPHA_GOTDTPREL16
1973 ENUMX
1974 BFD_RELOC_ALPHA_DTPREL64
1975 ENUMX
1976 BFD_RELOC_ALPHA_DTPREL_HI16
1977 ENUMX
1978 BFD_RELOC_ALPHA_DTPREL_LO16
1979 ENUMX
1980 BFD_RELOC_ALPHA_DTPREL16
1981 ENUMX
1982 BFD_RELOC_ALPHA_GOTTPREL16
1983 ENUMX
1984 BFD_RELOC_ALPHA_TPREL64
1985 ENUMX
1986 BFD_RELOC_ALPHA_TPREL_HI16
1987 ENUMX
1988 BFD_RELOC_ALPHA_TPREL_LO16
1989 ENUMX
1990 BFD_RELOC_ALPHA_TPREL16
1991 ENUMDOC
1992 Alpha thread-local storage relocations.
1994 ENUM
1995 BFD_RELOC_MIPS_JMP
1996 ENUMDOC
1997 Bits 27..2 of the relocation address shifted right 2 bits;
1998 simple reloc otherwise.
2000 ENUM
2001 BFD_RELOC_MIPS16_JMP
2002 ENUMDOC
2003 The MIPS16 jump instruction.
2005 ENUM
2006 BFD_RELOC_MIPS16_GPREL
2007 ENUMDOC
2008 MIPS16 GP relative reloc.
2010 ENUM
2011 BFD_RELOC_HI16
2012 ENUMDOC
2013 High 16 bits of 32-bit value; simple reloc.
2014 ENUM
2015 BFD_RELOC_HI16_S
2016 ENUMDOC
2017 High 16 bits of 32-bit value but the low 16 bits will be sign
2018 extended and added to form the final result. If the low 16
2019 bits form a negative number, we need to add one to the high value
2020 to compensate for the borrow when the low bits are added.
2021 ENUM
2022 BFD_RELOC_LO16
2023 ENUMDOC
2024 Low 16 bits.
2025 ENUM
2026 BFD_RELOC_PCREL_HI16_S
2027 ENUMDOC
2028 Like BFD_RELOC_HI16_S, but PC relative.
2029 ENUM
2030 BFD_RELOC_PCREL_LO16
2031 ENUMDOC
2032 Like BFD_RELOC_LO16, but PC relative.
2034 ENUM
2035 BFD_RELOC_MIPS_LITERAL
2036 ENUMDOC
2037 Relocation against a MIPS literal section.
2039 ENUM
2040 BFD_RELOC_MIPS_GOT16
2041 ENUMX
2042 BFD_RELOC_MIPS_CALL16
2043 ENUMX
2044 BFD_RELOC_MIPS_GOT_HI16
2045 ENUMX
2046 BFD_RELOC_MIPS_GOT_LO16
2047 ENUMX
2048 BFD_RELOC_MIPS_CALL_HI16
2049 ENUMX
2050 BFD_RELOC_MIPS_CALL_LO16
2051 ENUMX
2052 BFD_RELOC_MIPS_SUB
2053 ENUMX
2054 BFD_RELOC_MIPS_GOT_PAGE
2055 ENUMX
2056 BFD_RELOC_MIPS_GOT_OFST
2057 ENUMX
2058 BFD_RELOC_MIPS_GOT_DISP
2059 ENUMX
2060 BFD_RELOC_MIPS_SHIFT5
2061 ENUMX
2062 BFD_RELOC_MIPS_SHIFT6
2063 ENUMX
2064 BFD_RELOC_MIPS_INSERT_A
2065 ENUMX
2066 BFD_RELOC_MIPS_INSERT_B
2067 ENUMX
2068 BFD_RELOC_MIPS_DELETE
2069 ENUMX
2070 BFD_RELOC_MIPS_HIGHEST
2071 ENUMX
2072 BFD_RELOC_MIPS_HIGHER
2073 ENUMX
2074 BFD_RELOC_MIPS_SCN_DISP
2075 ENUMX
2076 BFD_RELOC_MIPS_REL16
2077 ENUMX
2078 BFD_RELOC_MIPS_RELGOT
2079 ENUMX
2080 BFD_RELOC_MIPS_JALR
2081 COMMENT
2082 ENUM
2083 BFD_RELOC_FRV_LABEL16
2084 ENUMX
2085 BFD_RELOC_FRV_LABEL24
2086 ENUMX
2087 BFD_RELOC_FRV_LO16
2088 ENUMX
2089 BFD_RELOC_FRV_HI16
2090 ENUMX
2091 BFD_RELOC_FRV_GPREL12
2092 ENUMX
2093 BFD_RELOC_FRV_GPRELU12
2094 ENUMX
2095 BFD_RELOC_FRV_GPREL32
2096 ENUMX
2097 BFD_RELOC_FRV_GPRELHI
2098 ENUMX
2099 BFD_RELOC_FRV_GPRELLO
2100 ENUMDOC
2101 Fujitsu Frv Relocations.
2102 COMMENT
2103 COMMENT
2104 ENUMDOC
2105 MIPS ELF relocations.
2107 COMMENT
2109 ENUM
2110 BFD_RELOC_386_GOT32
2111 ENUMX
2112 BFD_RELOC_386_PLT32
2113 ENUMX
2114 BFD_RELOC_386_COPY
2115 ENUMX
2116 BFD_RELOC_386_GLOB_DAT
2117 ENUMX
2118 BFD_RELOC_386_JUMP_SLOT
2119 ENUMX
2120 BFD_RELOC_386_RELATIVE
2121 ENUMX
2122 BFD_RELOC_386_GOTOFF
2123 ENUMX
2124 BFD_RELOC_386_GOTPC
2125 ENUMX
2126 BFD_RELOC_386_TLS_TPOFF
2127 ENUMX
2128 BFD_RELOC_386_TLS_IE
2129 ENUMX
2130 BFD_RELOC_386_TLS_GOTIE
2131 ENUMX
2132 BFD_RELOC_386_TLS_LE
2133 ENUMX
2134 BFD_RELOC_386_TLS_GD
2135 ENUMX
2136 BFD_RELOC_386_TLS_LDM
2137 ENUMX
2138 BFD_RELOC_386_TLS_LDO_32
2139 ENUMX
2140 BFD_RELOC_386_TLS_IE_32
2141 ENUMX
2142 BFD_RELOC_386_TLS_LE_32
2143 ENUMX
2144 BFD_RELOC_386_TLS_DTPMOD32
2145 ENUMX
2146 BFD_RELOC_386_TLS_DTPOFF32
2147 ENUMX
2148 BFD_RELOC_386_TLS_TPOFF32
2149 ENUMDOC
2150 i386/elf relocations
2152 ENUM
2153 BFD_RELOC_X86_64_GOT32
2154 ENUMX
2155 BFD_RELOC_X86_64_PLT32
2156 ENUMX
2157 BFD_RELOC_X86_64_COPY
2158 ENUMX
2159 BFD_RELOC_X86_64_GLOB_DAT
2160 ENUMX
2161 BFD_RELOC_X86_64_JUMP_SLOT
2162 ENUMX
2163 BFD_RELOC_X86_64_RELATIVE
2164 ENUMX
2165 BFD_RELOC_X86_64_GOTPCREL
2166 ENUMX
2167 BFD_RELOC_X86_64_32S
2168 ENUMX
2169 BFD_RELOC_X86_64_DTPMOD64
2170 ENUMX
2171 BFD_RELOC_X86_64_DTPOFF64
2172 ENUMX
2173 BFD_RELOC_X86_64_TPOFF64
2174 ENUMX
2175 BFD_RELOC_X86_64_TLSGD
2176 ENUMX
2177 BFD_RELOC_X86_64_TLSLD
2178 ENUMX
2179 BFD_RELOC_X86_64_DTPOFF32
2180 ENUMX
2181 BFD_RELOC_X86_64_GOTTPOFF
2182 ENUMX
2183 BFD_RELOC_X86_64_TPOFF32
2184 ENUMDOC
2185 x86-64/elf relocations
2187 ENUM
2188 BFD_RELOC_NS32K_IMM_8
2189 ENUMX
2190 BFD_RELOC_NS32K_IMM_16
2191 ENUMX
2192 BFD_RELOC_NS32K_IMM_32
2193 ENUMX
2194 BFD_RELOC_NS32K_IMM_8_PCREL
2195 ENUMX
2196 BFD_RELOC_NS32K_IMM_16_PCREL
2197 ENUMX
2198 BFD_RELOC_NS32K_IMM_32_PCREL
2199 ENUMX
2200 BFD_RELOC_NS32K_DISP_8
2201 ENUMX
2202 BFD_RELOC_NS32K_DISP_16
2203 ENUMX
2204 BFD_RELOC_NS32K_DISP_32
2205 ENUMX
2206 BFD_RELOC_NS32K_DISP_8_PCREL
2207 ENUMX
2208 BFD_RELOC_NS32K_DISP_16_PCREL
2209 ENUMX
2210 BFD_RELOC_NS32K_DISP_32_PCREL
2211 ENUMDOC
2212 ns32k relocations
2214 ENUM
2215 BFD_RELOC_PDP11_DISP_8_PCREL
2216 ENUMX
2217 BFD_RELOC_PDP11_DISP_6_PCREL
2218 ENUMDOC
2219 PDP11 relocations
2221 ENUM
2222 BFD_RELOC_PJ_CODE_HI16
2223 ENUMX
2224 BFD_RELOC_PJ_CODE_LO16
2225 ENUMX
2226 BFD_RELOC_PJ_CODE_DIR16
2227 ENUMX
2228 BFD_RELOC_PJ_CODE_DIR32
2229 ENUMX
2230 BFD_RELOC_PJ_CODE_REL16
2231 ENUMX
2232 BFD_RELOC_PJ_CODE_REL32
2233 ENUMDOC
2234 Picojava relocs. Not all of these appear in object files.
2236 ENUM
2237 BFD_RELOC_PPC_B26
2238 ENUMX
2239 BFD_RELOC_PPC_BA26
2240 ENUMX
2241 BFD_RELOC_PPC_TOC16
2242 ENUMX
2243 BFD_RELOC_PPC_B16
2244 ENUMX
2245 BFD_RELOC_PPC_B16_BRTAKEN
2246 ENUMX
2247 BFD_RELOC_PPC_B16_BRNTAKEN
2248 ENUMX
2249 BFD_RELOC_PPC_BA16
2250 ENUMX
2251 BFD_RELOC_PPC_BA16_BRTAKEN
2252 ENUMX
2253 BFD_RELOC_PPC_BA16_BRNTAKEN
2254 ENUMX
2255 BFD_RELOC_PPC_COPY
2256 ENUMX
2257 BFD_RELOC_PPC_GLOB_DAT
2258 ENUMX
2259 BFD_RELOC_PPC_JMP_SLOT
2260 ENUMX
2261 BFD_RELOC_PPC_RELATIVE
2262 ENUMX
2263 BFD_RELOC_PPC_LOCAL24PC
2264 ENUMX
2265 BFD_RELOC_PPC_EMB_NADDR32
2266 ENUMX
2267 BFD_RELOC_PPC_EMB_NADDR16
2268 ENUMX
2269 BFD_RELOC_PPC_EMB_NADDR16_LO
2270 ENUMX
2271 BFD_RELOC_PPC_EMB_NADDR16_HI
2272 ENUMX
2273 BFD_RELOC_PPC_EMB_NADDR16_HA
2274 ENUMX
2275 BFD_RELOC_PPC_EMB_SDAI16
2276 ENUMX
2277 BFD_RELOC_PPC_EMB_SDA2I16
2278 ENUMX
2279 BFD_RELOC_PPC_EMB_SDA2REL
2280 ENUMX
2281 BFD_RELOC_PPC_EMB_SDA21
2282 ENUMX
2283 BFD_RELOC_PPC_EMB_MRKREF
2284 ENUMX
2285 BFD_RELOC_PPC_EMB_RELSEC16
2286 ENUMX
2287 BFD_RELOC_PPC_EMB_RELST_LO
2288 ENUMX
2289 BFD_RELOC_PPC_EMB_RELST_HI
2290 ENUMX
2291 BFD_RELOC_PPC_EMB_RELST_HA
2292 ENUMX
2293 BFD_RELOC_PPC_EMB_BIT_FLD
2294 ENUMX
2295 BFD_RELOC_PPC_EMB_RELSDA
2296 ENUMX
2297 BFD_RELOC_PPC64_HIGHER
2298 ENUMX
2299 BFD_RELOC_PPC64_HIGHER_S
2300 ENUMX
2301 BFD_RELOC_PPC64_HIGHEST
2302 ENUMX
2303 BFD_RELOC_PPC64_HIGHEST_S
2304 ENUMX
2305 BFD_RELOC_PPC64_TOC16_LO
2306 ENUMX
2307 BFD_RELOC_PPC64_TOC16_HI
2308 ENUMX
2309 BFD_RELOC_PPC64_TOC16_HA
2310 ENUMX
2311 BFD_RELOC_PPC64_TOC
2312 ENUMX
2313 BFD_RELOC_PPC64_PLTGOT16
2314 ENUMX
2315 BFD_RELOC_PPC64_PLTGOT16_LO
2316 ENUMX
2317 BFD_RELOC_PPC64_PLTGOT16_HI
2318 ENUMX
2319 BFD_RELOC_PPC64_PLTGOT16_HA
2320 ENUMX
2321 BFD_RELOC_PPC64_ADDR16_DS
2322 ENUMX
2323 BFD_RELOC_PPC64_ADDR16_LO_DS
2324 ENUMX
2325 BFD_RELOC_PPC64_GOT16_DS
2326 ENUMX
2327 BFD_RELOC_PPC64_GOT16_LO_DS
2328 ENUMX
2329 BFD_RELOC_PPC64_PLT16_LO_DS
2330 ENUMX
2331 BFD_RELOC_PPC64_SECTOFF_DS
2332 ENUMX
2333 BFD_RELOC_PPC64_SECTOFF_LO_DS
2334 ENUMX
2335 BFD_RELOC_PPC64_TOC16_DS
2336 ENUMX
2337 BFD_RELOC_PPC64_TOC16_LO_DS
2338 ENUMX
2339 BFD_RELOC_PPC64_PLTGOT16_DS
2340 ENUMX
2341 BFD_RELOC_PPC64_PLTGOT16_LO_DS
2342 ENUMDOC
2343 Power(rs6000) and PowerPC relocations.
2345 ENUM
2346 BFD_RELOC_I370_D12
2347 ENUMDOC
2348 IBM 370/390 relocations
2350 ENUM
2351 BFD_RELOC_CTOR
2352 ENUMDOC
2353 The type of reloc used to build a contructor table - at the moment
2354 probably a 32 bit wide absolute relocation, but the target can choose.
2355 It generally does map to one of the other relocation types.
2357 ENUM
2358 BFD_RELOC_ARM_PCREL_BRANCH
2359 ENUMDOC
2360 ARM 26 bit pc-relative branch. The lowest two bits must be zero and are
2361 not stored in the instruction.
2362 ENUM
2363 BFD_RELOC_ARM_PCREL_BLX
2364 ENUMDOC
2365 ARM 26 bit pc-relative branch. The lowest bit must be zero and is
2366 not stored in the instruction. The 2nd lowest bit comes from a 1 bit
2367 field in the instruction.
2368 ENUM
2369 BFD_RELOC_THUMB_PCREL_BLX
2370 ENUMDOC
2371 Thumb 22 bit pc-relative branch. The lowest bit must be zero and is
2372 not stored in the instruction. The 2nd lowest bit comes from a 1 bit
2373 field in the instruction.
2374 ENUM
2375 BFD_RELOC_ARM_IMMEDIATE
2376 ENUMX
2377 BFD_RELOC_ARM_ADRL_IMMEDIATE
2378 ENUMX
2379 BFD_RELOC_ARM_OFFSET_IMM
2380 ENUMX
2381 BFD_RELOC_ARM_SHIFT_IMM
2382 ENUMX
2383 BFD_RELOC_ARM_SWI
2384 ENUMX
2385 BFD_RELOC_ARM_MULTI
2386 ENUMX
2387 BFD_RELOC_ARM_CP_OFF_IMM
2388 ENUMX
2389 BFD_RELOC_ARM_ADR_IMM
2390 ENUMX
2391 BFD_RELOC_ARM_LDR_IMM
2392 ENUMX
2393 BFD_RELOC_ARM_LITERAL
2394 ENUMX
2395 BFD_RELOC_ARM_IN_POOL
2396 ENUMX
2397 BFD_RELOC_ARM_OFFSET_IMM8
2398 ENUMX
2399 BFD_RELOC_ARM_HWLITERAL
2400 ENUMX
2401 BFD_RELOC_ARM_THUMB_ADD
2402 ENUMX
2403 BFD_RELOC_ARM_THUMB_IMM
2404 ENUMX
2405 BFD_RELOC_ARM_THUMB_SHIFT
2406 ENUMX
2407 BFD_RELOC_ARM_THUMB_OFFSET
2408 ENUMX
2409 BFD_RELOC_ARM_GOT12
2410 ENUMX
2411 BFD_RELOC_ARM_GOT32
2412 ENUMX
2413 BFD_RELOC_ARM_JUMP_SLOT
2414 ENUMX
2415 BFD_RELOC_ARM_COPY
2416 ENUMX
2417 BFD_RELOC_ARM_GLOB_DAT
2418 ENUMX
2419 BFD_RELOC_ARM_PLT32
2420 ENUMX
2421 BFD_RELOC_ARM_RELATIVE
2422 ENUMX
2423 BFD_RELOC_ARM_GOTOFF
2424 ENUMX
2425 BFD_RELOC_ARM_GOTPC
2426 ENUMDOC
2427 These relocs are only used within the ARM assembler. They are not
2428 (at present) written to any object files.
2430 ENUM
2431 BFD_RELOC_SH_PCDISP8BY2
2432 ENUMX
2433 BFD_RELOC_SH_PCDISP12BY2
2434 ENUMX
2435 BFD_RELOC_SH_IMM4
2436 ENUMX
2437 BFD_RELOC_SH_IMM4BY2
2438 ENUMX
2439 BFD_RELOC_SH_IMM4BY4
2440 ENUMX
2441 BFD_RELOC_SH_IMM8
2442 ENUMX
2443 BFD_RELOC_SH_IMM8BY2
2444 ENUMX
2445 BFD_RELOC_SH_IMM8BY4
2446 ENUMX
2447 BFD_RELOC_SH_PCRELIMM8BY2
2448 ENUMX
2449 BFD_RELOC_SH_PCRELIMM8BY4
2450 ENUMX
2451 BFD_RELOC_SH_SWITCH16
2452 ENUMX
2453 BFD_RELOC_SH_SWITCH32
2454 ENUMX
2455 BFD_RELOC_SH_USES
2456 ENUMX
2457 BFD_RELOC_SH_COUNT
2458 ENUMX
2459 BFD_RELOC_SH_ALIGN
2460 ENUMX
2461 BFD_RELOC_SH_CODE
2462 ENUMX
2463 BFD_RELOC_SH_DATA
2464 ENUMX
2465 BFD_RELOC_SH_LABEL
2466 ENUMX
2467 BFD_RELOC_SH_LOOP_START
2468 ENUMX
2469 BFD_RELOC_SH_LOOP_END
2470 ENUMX
2471 BFD_RELOC_SH_COPY
2472 ENUMX
2473 BFD_RELOC_SH_GLOB_DAT
2474 ENUMX
2475 BFD_RELOC_SH_JMP_SLOT
2476 ENUMX
2477 BFD_RELOC_SH_RELATIVE
2478 ENUMX
2479 BFD_RELOC_SH_GOTPC
2480 ENUMX
2481 BFD_RELOC_SH_GOT_LOW16
2482 ENUMX
2483 BFD_RELOC_SH_GOT_MEDLOW16
2484 ENUMX
2485 BFD_RELOC_SH_GOT_MEDHI16
2486 ENUMX
2487 BFD_RELOC_SH_GOT_HI16
2488 ENUMX
2489 BFD_RELOC_SH_GOTPLT_LOW16
2490 ENUMX
2491 BFD_RELOC_SH_GOTPLT_MEDLOW16
2492 ENUMX
2493 BFD_RELOC_SH_GOTPLT_MEDHI16
2494 ENUMX
2495 BFD_RELOC_SH_GOTPLT_HI16
2496 ENUMX
2497 BFD_RELOC_SH_PLT_LOW16
2498 ENUMX
2499 BFD_RELOC_SH_PLT_MEDLOW16
2500 ENUMX
2501 BFD_RELOC_SH_PLT_MEDHI16
2502 ENUMX
2503 BFD_RELOC_SH_PLT_HI16
2504 ENUMX
2505 BFD_RELOC_SH_GOTOFF_LOW16
2506 ENUMX
2507 BFD_RELOC_SH_GOTOFF_MEDLOW16
2508 ENUMX
2509 BFD_RELOC_SH_GOTOFF_MEDHI16
2510 ENUMX
2511 BFD_RELOC_SH_GOTOFF_HI16
2512 ENUMX
2513 BFD_RELOC_SH_GOTPC_LOW16
2514 ENUMX
2515 BFD_RELOC_SH_GOTPC_MEDLOW16
2516 ENUMX
2517 BFD_RELOC_SH_GOTPC_MEDHI16
2518 ENUMX
2519 BFD_RELOC_SH_GOTPC_HI16
2520 ENUMX
2521 BFD_RELOC_SH_COPY64
2522 ENUMX
2523 BFD_RELOC_SH_GLOB_DAT64
2524 ENUMX
2525 BFD_RELOC_SH_JMP_SLOT64
2526 ENUMX
2527 BFD_RELOC_SH_RELATIVE64
2528 ENUMX
2529 BFD_RELOC_SH_GOT10BY4
2530 ENUMX
2531 BFD_RELOC_SH_GOT10BY8
2532 ENUMX
2533 BFD_RELOC_SH_GOTPLT10BY4
2534 ENUMX
2535 BFD_RELOC_SH_GOTPLT10BY8
2536 ENUMX
2537 BFD_RELOC_SH_GOTPLT32
2538 ENUMX
2539 BFD_RELOC_SH_SHMEDIA_CODE
2540 ENUMX
2541 BFD_RELOC_SH_IMMU5
2542 ENUMX
2543 BFD_RELOC_SH_IMMS6
2544 ENUMX
2545 BFD_RELOC_SH_IMMS6BY32
2546 ENUMX
2547 BFD_RELOC_SH_IMMU6
2548 ENUMX
2549 BFD_RELOC_SH_IMMS10
2550 ENUMX
2551 BFD_RELOC_SH_IMMS10BY2
2552 ENUMX
2553 BFD_RELOC_SH_IMMS10BY4
2554 ENUMX
2555 BFD_RELOC_SH_IMMS10BY8
2556 ENUMX
2557 BFD_RELOC_SH_IMMS16
2558 ENUMX
2559 BFD_RELOC_SH_IMMU16
2560 ENUMX
2561 BFD_RELOC_SH_IMM_LOW16
2562 ENUMX
2563 BFD_RELOC_SH_IMM_LOW16_PCREL
2564 ENUMX
2565 BFD_RELOC_SH_IMM_MEDLOW16
2566 ENUMX
2567 BFD_RELOC_SH_IMM_MEDLOW16_PCREL
2568 ENUMX
2569 BFD_RELOC_SH_IMM_MEDHI16
2570 ENUMX
2571 BFD_RELOC_SH_IMM_MEDHI16_PCREL
2572 ENUMX
2573 BFD_RELOC_SH_IMM_HI16
2574 ENUMX
2575 BFD_RELOC_SH_IMM_HI16_PCREL
2576 ENUMX
2577 BFD_RELOC_SH_PT_16
2578 ENUMDOC
2579 Hitachi SH relocs. Not all of these appear in object files.
2581 ENUM
2582 BFD_RELOC_THUMB_PCREL_BRANCH9
2583 ENUMX
2584 BFD_RELOC_THUMB_PCREL_BRANCH12
2585 ENUMX
2586 BFD_RELOC_THUMB_PCREL_BRANCH23
2587 ENUMDOC
2588 Thumb 23-, 12- and 9-bit pc-relative branches. The lowest bit must
2589 be zero and is not stored in the instruction.
2591 ENUM
2592 BFD_RELOC_ARC_B22_PCREL
2593 ENUMDOC
2594 ARC Cores relocs.
2595 ARC 22 bit pc-relative branch. The lowest two bits must be zero and are
2596 not stored in the instruction. The high 20 bits are installed in bits 26
2597 through 7 of the instruction.
2598 ENUM
2599 BFD_RELOC_ARC_B26
2600 ENUMDOC
2601 ARC 26 bit absolute branch. The lowest two bits must be zero and are not
2602 stored in the instruction. The high 24 bits are installed in bits 23
2603 through 0.
2605 ENUM
2606 BFD_RELOC_D10V_10_PCREL_R
2607 ENUMDOC
2608 Mitsubishi D10V relocs.
2609 This is a 10-bit reloc with the right 2 bits
2610 assumed to be 0.
2611 ENUM
2612 BFD_RELOC_D10V_10_PCREL_L
2613 ENUMDOC
2614 Mitsubishi D10V relocs.
2615 This is a 10-bit reloc with the right 2 bits
2616 assumed to be 0. This is the same as the previous reloc
2617 except it is in the left container, i.e.,
2618 shifted left 15 bits.
2619 ENUM
2620 BFD_RELOC_D10V_18
2621 ENUMDOC
2622 This is an 18-bit reloc with the right 2 bits
2623 assumed to be 0.
2624 ENUM
2625 BFD_RELOC_D10V_18_PCREL
2626 ENUMDOC
2627 This is an 18-bit reloc with the right 2 bits
2628 assumed to be 0.
2630 ENUM
2631 BFD_RELOC_D30V_6
2632 ENUMDOC
2633 Mitsubishi D30V relocs.
2634 This is a 6-bit absolute reloc.
2635 ENUM
2636 BFD_RELOC_D30V_9_PCREL
2637 ENUMDOC
2638 This is a 6-bit pc-relative reloc with
2639 the right 3 bits assumed to be 0.
2640 ENUM
2641 BFD_RELOC_D30V_9_PCREL_R
2642 ENUMDOC
2643 This is a 6-bit pc-relative reloc with
2644 the right 3 bits assumed to be 0. Same
2645 as the previous reloc but on the right side
2646 of the container.
2647 ENUM
2648 BFD_RELOC_D30V_15
2649 ENUMDOC
2650 This is a 12-bit absolute reloc with the
2651 right 3 bitsassumed to be 0.
2652 ENUM
2653 BFD_RELOC_D30V_15_PCREL
2654 ENUMDOC
2655 This is a 12-bit pc-relative reloc with
2656 the right 3 bits assumed to be 0.
2657 ENUM
2658 BFD_RELOC_D30V_15_PCREL_R
2659 ENUMDOC
2660 This is a 12-bit pc-relative reloc with
2661 the right 3 bits assumed to be 0. Same
2662 as the previous reloc but on the right side
2663 of the container.
2664 ENUM
2665 BFD_RELOC_D30V_21
2666 ENUMDOC
2667 This is an 18-bit absolute reloc with
2668 the right 3 bits assumed to be 0.
2669 ENUM
2670 BFD_RELOC_D30V_21_PCREL
2671 ENUMDOC
2672 This is an 18-bit pc-relative reloc with
2673 the right 3 bits assumed to be 0.
2674 ENUM
2675 BFD_RELOC_D30V_21_PCREL_R
2676 ENUMDOC
2677 This is an 18-bit pc-relative reloc with
2678 the right 3 bits assumed to be 0. Same
2679 as the previous reloc but on the right side
2680 of the container.
2681 ENUM
2682 BFD_RELOC_D30V_32
2683 ENUMDOC
2684 This is a 32-bit absolute reloc.
2685 ENUM
2686 BFD_RELOC_D30V_32_PCREL
2687 ENUMDOC
2688 This is a 32-bit pc-relative reloc.
2690 ENUM
2691 BFD_RELOC_DLX_HI16_S
2692 ENUMDOC
2693 DLX relocs
2694 ENUM
2695 BFD_RELOC_DLX_LO16
2696 ENUMDOC
2697 DLX relocs
2698 ENUM
2699 BFD_RELOC_DLX_JMP26
2700 ENUMDOC
2701 DLX relocs
2703 ENUM
2704 BFD_RELOC_M32R_24
2705 ENUMDOC
2706 Mitsubishi M32R relocs.
2707 This is a 24 bit absolute address.
2708 ENUM
2709 BFD_RELOC_M32R_10_PCREL
2710 ENUMDOC
2711 This is a 10-bit pc-relative reloc with the right 2 bits assumed to be 0.
2712 ENUM
2713 BFD_RELOC_M32R_18_PCREL
2714 ENUMDOC
2715 This is an 18-bit reloc with the right 2 bits assumed to be 0.
2716 ENUM
2717 BFD_RELOC_M32R_26_PCREL
2718 ENUMDOC
2719 This is a 26-bit reloc with the right 2 bits assumed to be 0.
2720 ENUM
2721 BFD_RELOC_M32R_HI16_ULO
2722 ENUMDOC
2723 This is a 16-bit reloc containing the high 16 bits of an address
2724 used when the lower 16 bits are treated as unsigned.
2725 ENUM
2726 BFD_RELOC_M32R_HI16_SLO
2727 ENUMDOC
2728 This is a 16-bit reloc containing the high 16 bits of an address
2729 used when the lower 16 bits are treated as signed.
2730 ENUM
2731 BFD_RELOC_M32R_LO16
2732 ENUMDOC
2733 This is a 16-bit reloc containing the lower 16 bits of an address.
2734 ENUM
2735 BFD_RELOC_M32R_SDA16
2736 ENUMDOC
2737 This is a 16-bit reloc containing the small data area offset for use in
2738 add3, load, and store instructions.
2740 ENUM
2741 BFD_RELOC_V850_9_PCREL
2742 ENUMDOC
2743 This is a 9-bit reloc
2744 ENUM
2745 BFD_RELOC_V850_22_PCREL
2746 ENUMDOC
2747 This is a 22-bit reloc
2749 ENUM
2750 BFD_RELOC_V850_SDA_16_16_OFFSET
2751 ENUMDOC
2752 This is a 16 bit offset from the short data area pointer.
2753 ENUM
2754 BFD_RELOC_V850_SDA_15_16_OFFSET
2755 ENUMDOC
2756 This is a 16 bit offset (of which only 15 bits are used) from the
2757 short data area pointer.
2758 ENUM
2759 BFD_RELOC_V850_ZDA_16_16_OFFSET
2760 ENUMDOC
2761 This is a 16 bit offset from the zero data area pointer.
2762 ENUM
2763 BFD_RELOC_V850_ZDA_15_16_OFFSET
2764 ENUMDOC
2765 This is a 16 bit offset (of which only 15 bits are used) from the
2766 zero data area pointer.
2767 ENUM
2768 BFD_RELOC_V850_TDA_6_8_OFFSET
2769 ENUMDOC
2770 This is an 8 bit offset (of which only 6 bits are used) from the
2771 tiny data area pointer.
2772 ENUM
2773 BFD_RELOC_V850_TDA_7_8_OFFSET
2774 ENUMDOC
2775 This is an 8bit offset (of which only 7 bits are used) from the tiny
2776 data area pointer.
2777 ENUM
2778 BFD_RELOC_V850_TDA_7_7_OFFSET
2779 ENUMDOC
2780 This is a 7 bit offset from the tiny data area pointer.
2781 ENUM
2782 BFD_RELOC_V850_TDA_16_16_OFFSET
2783 ENUMDOC
2784 This is a 16 bit offset from the tiny data area pointer.
2785 COMMENT
2786 ENUM
2787 BFD_RELOC_V850_TDA_4_5_OFFSET
2788 ENUMDOC
2789 This is a 5 bit offset (of which only 4 bits are used) from the tiny
2790 data area pointer.
2791 ENUM
2792 BFD_RELOC_V850_TDA_4_4_OFFSET
2793 ENUMDOC
2794 This is a 4 bit offset from the tiny data area pointer.
2795 ENUM
2796 BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET
2797 ENUMDOC
2798 This is a 16 bit offset from the short data area pointer, with the
2799 bits placed non-contigously in the instruction.
2800 ENUM
2801 BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET
2802 ENUMDOC
2803 This is a 16 bit offset from the zero data area pointer, with the
2804 bits placed non-contigously in the instruction.
2805 ENUM
2806 BFD_RELOC_V850_CALLT_6_7_OFFSET
2807 ENUMDOC
2808 This is a 6 bit offset from the call table base pointer.
2809 ENUM
2810 BFD_RELOC_V850_CALLT_16_16_OFFSET
2811 ENUMDOC
2812 This is a 16 bit offset from the call table base pointer.
2813 ENUM
2814 BFD_RELOC_V850_LONGCALL
2815 ENUMDOC
2816 Used for relaxing indirect function calls.
2817 ENUM
2818 BFD_RELOC_V850_LONGJUMP
2819 ENUMDOC
2820 Used for relaxing indirect jumps.
2821 ENUM
2822 BFD_RELOC_V850_ALIGN
2823 ENUMDOC
2824 Used to maintain alignment whilst relaxing.
2825 ENUM
2826 BFD_RELOC_MN10300_32_PCREL
2827 ENUMDOC
2828 This is a 32bit pcrel reloc for the mn10300, offset by two bytes in the
2829 instruction.
2830 ENUM
2831 BFD_RELOC_MN10300_16_PCREL
2832 ENUMDOC
2833 This is a 16bit pcrel reloc for the mn10300, offset by two bytes in the
2834 instruction.
2836 ENUM
2837 BFD_RELOC_TIC30_LDP
2838 ENUMDOC
2839 This is a 8bit DP reloc for the tms320c30, where the most
2840 significant 8 bits of a 24 bit word are placed into the least
2841 significant 8 bits of the opcode.
2843 ENUM
2844 BFD_RELOC_TIC54X_PARTLS7
2845 ENUMDOC
2846 This is a 7bit reloc for the tms320c54x, where the least
2847 significant 7 bits of a 16 bit word are placed into the least
2848 significant 7 bits of the opcode.
2850 ENUM
2851 BFD_RELOC_TIC54X_PARTMS9
2852 ENUMDOC
2853 This is a 9bit DP reloc for the tms320c54x, where the most
2854 significant 9 bits of a 16 bit word are placed into the least
2855 significant 9 bits of the opcode.
2857 ENUM
2858 BFD_RELOC_TIC54X_23
2859 ENUMDOC
2860 This is an extended address 23-bit reloc for the tms320c54x.
2862 ENUM
2863 BFD_RELOC_TIC54X_16_OF_23
2864 ENUMDOC
2865 This is a 16-bit reloc for the tms320c54x, where the least
2866 significant 16 bits of a 23-bit extended address are placed into
2867 the opcode.
2869 ENUM
2870 BFD_RELOC_TIC54X_MS7_OF_23
2871 ENUMDOC
2872 This is a reloc for the tms320c54x, where the most
2873 significant 7 bits of a 23-bit extended address are placed into
2874 the opcode.
2876 ENUM
2877 BFD_RELOC_FR30_48
2878 ENUMDOC
2879 This is a 48 bit reloc for the FR30 that stores 32 bits.
2880 ENUM
2881 BFD_RELOC_FR30_20
2882 ENUMDOC
2883 This is a 32 bit reloc for the FR30 that stores 20 bits split up into
2884 two sections.
2885 ENUM
2886 BFD_RELOC_FR30_6_IN_4
2887 ENUMDOC
2888 This is a 16 bit reloc for the FR30 that stores a 6 bit word offset in
2889 4 bits.
2890 ENUM
2891 BFD_RELOC_FR30_8_IN_8
2892 ENUMDOC
2893 This is a 16 bit reloc for the FR30 that stores an 8 bit byte offset
2894 into 8 bits.
2895 ENUM
2896 BFD_RELOC_FR30_9_IN_8
2897 ENUMDOC
2898 This is a 16 bit reloc for the FR30 that stores a 9 bit short offset
2899 into 8 bits.
2900 ENUM
2901 BFD_RELOC_FR30_10_IN_8
2902 ENUMDOC
2903 This is a 16 bit reloc for the FR30 that stores a 10 bit word offset
2904 into 8 bits.
2905 ENUM
2906 BFD_RELOC_FR30_9_PCREL
2907 ENUMDOC
2908 This is a 16 bit reloc for the FR30 that stores a 9 bit pc relative
2909 short offset into 8 bits.
2910 ENUM
2911 BFD_RELOC_FR30_12_PCREL
2912 ENUMDOC
2913 This is a 16 bit reloc for the FR30 that stores a 12 bit pc relative
2914 short offset into 11 bits.
2916 ENUM
2917 BFD_RELOC_MCORE_PCREL_IMM8BY4
2918 ENUMX
2919 BFD_RELOC_MCORE_PCREL_IMM11BY2
2920 ENUMX
2921 BFD_RELOC_MCORE_PCREL_IMM4BY2
2922 ENUMX
2923 BFD_RELOC_MCORE_PCREL_32
2924 ENUMX
2925 BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2
2926 ENUMX
2927 BFD_RELOC_MCORE_RVA
2928 ENUMDOC
2929 Motorola Mcore relocations.
2931 ENUM
2932 BFD_RELOC_MMIX_GETA
2933 ENUMX
2934 BFD_RELOC_MMIX_GETA_1
2935 ENUMX
2936 BFD_RELOC_MMIX_GETA_2
2937 ENUMX
2938 BFD_RELOC_MMIX_GETA_3
2939 ENUMDOC
2940 These are relocations for the GETA instruction.
2941 ENUM
2942 BFD_RELOC_MMIX_CBRANCH
2943 ENUMX
2944 BFD_RELOC_MMIX_CBRANCH_J
2945 ENUMX
2946 BFD_RELOC_MMIX_CBRANCH_1
2947 ENUMX
2948 BFD_RELOC_MMIX_CBRANCH_2
2949 ENUMX
2950 BFD_RELOC_MMIX_CBRANCH_3
2951 ENUMDOC
2952 These are relocations for a conditional branch instruction.
2953 ENUM
2954 BFD_RELOC_MMIX_PUSHJ
2955 ENUMX
2956 BFD_RELOC_MMIX_PUSHJ_1
2957 ENUMX
2958 BFD_RELOC_MMIX_PUSHJ_2
2959 ENUMX
2960 BFD_RELOC_MMIX_PUSHJ_3
2961 ENUMDOC
2962 These are relocations for the PUSHJ instruction.
2963 ENUM
2964 BFD_RELOC_MMIX_JMP
2965 ENUMX
2966 BFD_RELOC_MMIX_JMP_1
2967 ENUMX
2968 BFD_RELOC_MMIX_JMP_2
2969 ENUMX
2970 BFD_RELOC_MMIX_JMP_3
2971 ENUMDOC
2972 These are relocations for the JMP instruction.
2973 ENUM
2974 BFD_RELOC_MMIX_ADDR19
2975 ENUMDOC
2976 This is a relocation for a relative address as in a GETA instruction or
2977 a branch.
2978 ENUM
2979 BFD_RELOC_MMIX_ADDR27
2980 ENUMDOC
2981 This is a relocation for a relative address as in a JMP instruction.
2982 ENUM
2983 BFD_RELOC_MMIX_REG_OR_BYTE
2984 ENUMDOC
2985 This is a relocation for an instruction field that may be a general
2986 register or a value 0..255.
2987 ENUM
2988 BFD_RELOC_MMIX_REG
2989 ENUMDOC
2990 This is a relocation for an instruction field that may be a general
2991 register.
2992 ENUM
2993 BFD_RELOC_MMIX_BASE_PLUS_OFFSET
2994 ENUMDOC
2995 This is a relocation for two instruction fields holding a register and
2996 an offset, the equivalent of the relocation.
2997 ENUM
2998 BFD_RELOC_MMIX_LOCAL
2999 ENUMDOC
3000 This relocation is an assertion that the expression is not allocated as
3001 a global register. It does not modify contents.
3003 ENUM
3004 BFD_RELOC_AVR_7_PCREL
3005 ENUMDOC
3006 This is a 16 bit reloc for the AVR that stores 8 bit pc relative
3007 short offset into 7 bits.
3008 ENUM
3009 BFD_RELOC_AVR_13_PCREL
3010 ENUMDOC
3011 This is a 16 bit reloc for the AVR that stores 13 bit pc relative
3012 short offset into 12 bits.
3013 ENUM
3014 BFD_RELOC_AVR_16_PM
3015 ENUMDOC
3016 This is a 16 bit reloc for the AVR that stores 17 bit value (usually
3017 program memory address) into 16 bits.
3018 ENUM
3019 BFD_RELOC_AVR_LO8_LDI
3020 ENUMDOC
3021 This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3022 data memory address) into 8 bit immediate value of LDI insn.
3023 ENUM
3024 BFD_RELOC_AVR_HI8_LDI
3025 ENUMDOC
3026 This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3027 of data memory address) into 8 bit immediate value of LDI insn.
3028 ENUM
3029 BFD_RELOC_AVR_HH8_LDI
3030 ENUMDOC
3031 This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3032 of program memory address) into 8 bit immediate value of LDI insn.
3033 ENUM
3034 BFD_RELOC_AVR_LO8_LDI_NEG
3035 ENUMDOC
3036 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3037 (usually data memory address) into 8 bit immediate value of SUBI insn.
3038 ENUM
3039 BFD_RELOC_AVR_HI8_LDI_NEG
3040 ENUMDOC
3041 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3042 (high 8 bit of data memory address) into 8 bit immediate value of
3043 SUBI insn.
3044 ENUM
3045 BFD_RELOC_AVR_HH8_LDI_NEG
3046 ENUMDOC
3047 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3048 (most high 8 bit of program memory address) into 8 bit immediate value
3049 of LDI or SUBI insn.
3050 ENUM
3051 BFD_RELOC_AVR_LO8_LDI_PM
3052 ENUMDOC
3053 This is a 16 bit reloc for the AVR that stores 8 bit value (usually
3054 command address) into 8 bit immediate value of LDI insn.
3055 ENUM
3056 BFD_RELOC_AVR_HI8_LDI_PM
3057 ENUMDOC
3058 This is a 16 bit reloc for the AVR that stores 8 bit value (high 8 bit
3059 of command address) into 8 bit immediate value of LDI insn.
3060 ENUM
3061 BFD_RELOC_AVR_HH8_LDI_PM
3062 ENUMDOC
3063 This is a 16 bit reloc for the AVR that stores 8 bit value (most high 8 bit
3064 of command address) into 8 bit immediate value of LDI insn.
3065 ENUM
3066 BFD_RELOC_AVR_LO8_LDI_PM_NEG
3067 ENUMDOC
3068 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3069 (usually command address) into 8 bit immediate value of SUBI insn.
3070 ENUM
3071 BFD_RELOC_AVR_HI8_LDI_PM_NEG
3072 ENUMDOC
3073 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3074 (high 8 bit of 16 bit command address) into 8 bit immediate value
3075 of SUBI insn.
3076 ENUM
3077 BFD_RELOC_AVR_HH8_LDI_PM_NEG
3078 ENUMDOC
3079 This is a 16 bit reloc for the AVR that stores negated 8 bit value
3080 (high 6 bit of 22 bit command address) into 8 bit immediate
3081 value of SUBI insn.
3082 ENUM
3083 BFD_RELOC_AVR_CALL
3084 ENUMDOC
3085 This is a 32 bit reloc for the AVR that stores 23 bit value
3086 into 22 bits.
3088 ENUM
3089 BFD_RELOC_390_12
3090 ENUMDOC
3091 Direct 12 bit.
3092 ENUM
3093 BFD_RELOC_390_GOT12
3094 ENUMDOC
3095 12 bit GOT offset.
3096 ENUM
3097 BFD_RELOC_390_PLT32
3098 ENUMDOC
3099 32 bit PC relative PLT address.
3100 ENUM
3101 BFD_RELOC_390_COPY
3102 ENUMDOC
3103 Copy symbol at runtime.
3104 ENUM
3105 BFD_RELOC_390_GLOB_DAT
3106 ENUMDOC
3107 Create GOT entry.
3108 ENUM
3109 BFD_RELOC_390_JMP_SLOT
3110 ENUMDOC
3111 Create PLT entry.
3112 ENUM
3113 BFD_RELOC_390_RELATIVE
3114 ENUMDOC
3115 Adjust by program base.
3116 ENUM
3117 BFD_RELOC_390_GOTPC
3118 ENUMDOC
3119 32 bit PC relative offset to GOT.
3120 ENUM
3121 BFD_RELOC_390_GOT16
3122 ENUMDOC
3123 16 bit GOT offset.
3124 ENUM
3125 BFD_RELOC_390_PC16DBL
3126 ENUMDOC
3127 PC relative 16 bit shifted by 1.
3128 ENUM
3129 BFD_RELOC_390_PLT16DBL
3130 ENUMDOC
3131 16 bit PC rel. PLT shifted by 1.
3132 ENUM
3133 BFD_RELOC_390_PC32DBL
3134 ENUMDOC
3135 PC relative 32 bit shifted by 1.
3136 ENUM
3137 BFD_RELOC_390_PLT32DBL
3138 ENUMDOC
3139 32 bit PC rel. PLT shifted by 1.
3140 ENUM
3141 BFD_RELOC_390_GOTPCDBL
3142 ENUMDOC
3143 32 bit PC rel. GOT shifted by 1.
3144 ENUM
3145 BFD_RELOC_390_GOT64
3146 ENUMDOC
3147 64 bit GOT offset.
3148 ENUM
3149 BFD_RELOC_390_PLT64
3150 ENUMDOC
3151 64 bit PC relative PLT address.
3152 ENUM
3153 BFD_RELOC_390_GOTENT
3154 ENUMDOC
3155 32 bit rel. offset to GOT entry.
3157 ENUM
3158 BFD_RELOC_IP2K_FR9
3159 ENUMDOC
3160 Scenix IP2K - 9-bit register number / data address
3161 ENUM
3162 BFD_RELOC_IP2K_BANK
3163 ENUMDOC
3164 Scenix IP2K - 4-bit register/data bank number
3165 ENUM
3166 BFD_RELOC_IP2K_ADDR16CJP
3167 ENUMDOC
3168 Scenix IP2K - low 13 bits of instruction word address
3169 ENUM
3170 BFD_RELOC_IP2K_PAGE3
3171 ENUMDOC
3172 Scenix IP2K - high 3 bits of instruction word address
3173 ENUM
3174 BFD_RELOC_IP2K_LO8DATA
3175 ENUMX
3176 BFD_RELOC_IP2K_HI8DATA
3177 ENUMX
3178 BFD_RELOC_IP2K_EX8DATA
3179 ENUMDOC
3180 Scenix IP2K - ext/low/high 8 bits of data address
3181 ENUM
3182 BFD_RELOC_IP2K_LO8INSN
3183 ENUMX
3184 BFD_RELOC_IP2K_HI8INSN
3185 ENUMDOC
3186 Scenix IP2K - low/high 8 bits of instruction word address
3187 ENUM
3188 BFD_RELOC_IP2K_PC_SKIP
3189 ENUMDOC
3190 Scenix IP2K - even/odd PC modifier to modify snb pcl.0
3191 ENUM
3192 BFD_RELOC_IP2K_TEXT
3193 ENUMDOC
3194 Scenix IP2K - 16 bit word address in text section.
3195 ENUM
3196 BFD_RELOC_IP2K_FR_OFFSET
3197 ENUMDOC
3198 Scenix IP2K - 7-bit sp or dp offset
3199 ENUM
3200 BFD_RELOC_VPE4KMATH_DATA
3201 ENUMX
3202 BFD_RELOC_VPE4KMATH_INSN
3203 ENUMDOC
3204 Scenix VPE4K coprocessor - data/insn-space addressing
3206 ENUM
3207 BFD_RELOC_VTABLE_INHERIT
3208 ENUMX
3209 BFD_RELOC_VTABLE_ENTRY
3210 ENUMDOC
3211 These two relocations are used by the linker to determine which of
3212 the entries in a C++ virtual function table are actually used. When
3213 the --gc-sections option is given, the linker will zero out the entries
3214 that are not used, so that the code for those functions need not be
3215 included in the output.
3217 VTABLE_INHERIT is a zero-space relocation used to describe to the
3218 linker the inheritence tree of a C++ virtual function table. The
3219 relocation's symbol should be the parent class' vtable, and the
3220 relocation should be located at the child vtable.
3222 VTABLE_ENTRY is a zero-space relocation that describes the use of a
3223 virtual function table entry. The reloc's symbol should refer to the
3224 table of the class mentioned in the code. Off of that base, an offset
3225 describes the entry that is being used. For Rela hosts, this offset
3226 is stored in the reloc's addend. For Rel hosts, we are forced to put
3227 this offset in the reloc's section offset.
3229 ENUM
3230 BFD_RELOC_IA64_IMM14
3231 ENUMX
3232 BFD_RELOC_IA64_IMM22
3233 ENUMX
3234 BFD_RELOC_IA64_IMM64
3235 ENUMX
3236 BFD_RELOC_IA64_DIR32MSB
3237 ENUMX
3238 BFD_RELOC_IA64_DIR32LSB
3239 ENUMX
3240 BFD_RELOC_IA64_DIR64MSB
3241 ENUMX
3242 BFD_RELOC_IA64_DIR64LSB
3243 ENUMX
3244 BFD_RELOC_IA64_GPREL22
3245 ENUMX
3246 BFD_RELOC_IA64_GPREL64I
3247 ENUMX
3248 BFD_RELOC_IA64_GPREL32MSB
3249 ENUMX
3250 BFD_RELOC_IA64_GPREL32LSB
3251 ENUMX
3252 BFD_RELOC_IA64_GPREL64MSB
3253 ENUMX
3254 BFD_RELOC_IA64_GPREL64LSB
3255 ENUMX
3256 BFD_RELOC_IA64_LTOFF22
3257 ENUMX
3258 BFD_RELOC_IA64_LTOFF64I
3259 ENUMX
3260 BFD_RELOC_IA64_PLTOFF22
3261 ENUMX
3262 BFD_RELOC_IA64_PLTOFF64I
3263 ENUMX
3264 BFD_RELOC_IA64_PLTOFF64MSB
3265 ENUMX
3266 BFD_RELOC_IA64_PLTOFF64LSB
3267 ENUMX
3268 BFD_RELOC_IA64_FPTR64I
3269 ENUMX
3270 BFD_RELOC_IA64_FPTR32MSB
3271 ENUMX
3272 BFD_RELOC_IA64_FPTR32LSB
3273 ENUMX
3274 BFD_RELOC_IA64_FPTR64MSB
3275 ENUMX
3276 BFD_RELOC_IA64_FPTR64LSB
3277 ENUMX
3278 BFD_RELOC_IA64_PCREL21B
3279 ENUMX
3280 BFD_RELOC_IA64_PCREL21BI
3281 ENUMX
3282 BFD_RELOC_IA64_PCREL21M
3283 ENUMX
3284 BFD_RELOC_IA64_PCREL21F
3285 ENUMX
3286 BFD_RELOC_IA64_PCREL22
3287 ENUMX
3288 BFD_RELOC_IA64_PCREL60B
3289 ENUMX
3290 BFD_RELOC_IA64_PCREL64I
3291 ENUMX
3292 BFD_RELOC_IA64_PCREL32MSB
3293 ENUMX
3294 BFD_RELOC_IA64_PCREL32LSB
3295 ENUMX
3296 BFD_RELOC_IA64_PCREL64MSB
3297 ENUMX
3298 BFD_RELOC_IA64_PCREL64LSB
3299 ENUMX
3300 BFD_RELOC_IA64_LTOFF_FPTR22
3301 ENUMX
3302 BFD_RELOC_IA64_LTOFF_FPTR64I
3303 ENUMX
3304 BFD_RELOC_IA64_LTOFF_FPTR32MSB
3305 ENUMX
3306 BFD_RELOC_IA64_LTOFF_FPTR32LSB
3307 ENUMX
3308 BFD_RELOC_IA64_LTOFF_FPTR64MSB
3309 ENUMX
3310 BFD_RELOC_IA64_LTOFF_FPTR64LSB
3311 ENUMX
3312 BFD_RELOC_IA64_SEGREL32MSB
3313 ENUMX
3314 BFD_RELOC_IA64_SEGREL32LSB
3315 ENUMX
3316 BFD_RELOC_IA64_SEGREL64MSB
3317 ENUMX
3318 BFD_RELOC_IA64_SEGREL64LSB
3319 ENUMX
3320 BFD_RELOC_IA64_SECREL32MSB
3321 ENUMX
3322 BFD_RELOC_IA64_SECREL32LSB
3323 ENUMX
3324 BFD_RELOC_IA64_SECREL64MSB
3325 ENUMX
3326 BFD_RELOC_IA64_SECREL64LSB
3327 ENUMX
3328 BFD_RELOC_IA64_REL32MSB
3329 ENUMX
3330 BFD_RELOC_IA64_REL32LSB
3331 ENUMX
3332 BFD_RELOC_IA64_REL64MSB
3333 ENUMX
3334 BFD_RELOC_IA64_REL64LSB
3335 ENUMX
3336 BFD_RELOC_IA64_LTV32MSB
3337 ENUMX
3338 BFD_RELOC_IA64_LTV32LSB
3339 ENUMX
3340 BFD_RELOC_IA64_LTV64MSB
3341 ENUMX
3342 BFD_RELOC_IA64_LTV64LSB
3343 ENUMX
3344 BFD_RELOC_IA64_IPLTMSB
3345 ENUMX
3346 BFD_RELOC_IA64_IPLTLSB
3347 ENUMX
3348 BFD_RELOC_IA64_COPY
3349 ENUMX
3350 BFD_RELOC_IA64_LTOFF22X
3351 ENUMX
3352 BFD_RELOC_IA64_LDXMOV
3353 ENUMX
3354 BFD_RELOC_IA64_TPREL14
3355 ENUMX
3356 BFD_RELOC_IA64_TPREL22
3357 ENUMX
3358 BFD_RELOC_IA64_TPREL64I
3359 ENUMX
3360 BFD_RELOC_IA64_TPREL64MSB
3361 ENUMX
3362 BFD_RELOC_IA64_TPREL64LSB
3363 ENUMX
3364 BFD_RELOC_IA64_LTOFF_TPREL22
3365 ENUMX
3366 BFD_RELOC_IA64_DTPMOD64MSB
3367 ENUMX
3368 BFD_RELOC_IA64_DTPMOD64LSB
3369 ENUMX
3370 BFD_RELOC_IA64_LTOFF_DTPMOD22
3371 ENUMX
3372 BFD_RELOC_IA64_DTPREL14
3373 ENUMX
3374 BFD_RELOC_IA64_DTPREL22
3375 ENUMX
3376 BFD_RELOC_IA64_DTPREL64I
3377 ENUMX
3378 BFD_RELOC_IA64_DTPREL32MSB
3379 ENUMX
3380 BFD_RELOC_IA64_DTPREL32LSB
3381 ENUMX
3382 BFD_RELOC_IA64_DTPREL64MSB
3383 ENUMX
3384 BFD_RELOC_IA64_DTPREL64LSB
3385 ENUMX
3386 BFD_RELOC_IA64_LTOFF_DTPREL22
3387 ENUMDOC
3388 Intel IA64 Relocations.
3390 ENUM
3391 BFD_RELOC_M68HC11_HI8
3392 ENUMDOC
3393 Motorola 68HC11 reloc.
3394 This is the 8 bit high part of an absolute address.
3395 ENUM
3396 BFD_RELOC_M68HC11_LO8
3397 ENUMDOC
3398 Motorola 68HC11 reloc.
3399 This is the 8 bit low part of an absolute address.
3400 ENUM
3401 BFD_RELOC_M68HC11_3B
3402 ENUMDOC
3403 Motorola 68HC11 reloc.
3404 This is the 3 bit of a value.
3405 ENUM
3406 BFD_RELOC_M68HC11_RL_JUMP
3407 ENUMDOC
3408 Motorola 68HC11 reloc.
3409 This reloc marks the beginning of a jump/call instruction.
3410 It is used for linker relaxation to correctly identify beginning
3411 of instruction and change some branchs to use PC-relative
3412 addressing mode.
3413 ENUM
3414 BFD_RELOC_M68HC11_RL_GROUP
3415 ENUMDOC
3416 Motorola 68HC11 reloc.
3417 This reloc marks a group of several instructions that gcc generates
3418 and for which the linker relaxation pass can modify and/or remove
3419 some of them.
3420 ENUM
3421 BFD_RELOC_M68HC11_LO16
3422 ENUMDOC
3423 Motorola 68HC11 reloc.
3424 This is the 16-bit lower part of an address. It is used for 'call'
3425 instruction to specify the symbol address without any special
3426 transformation (due to memory bank window).
3427 ENUM
3428 BFD_RELOC_M68HC11_PAGE
3429 ENUMDOC
3430 Motorola 68HC11 reloc.
3431 This is a 8-bit reloc that specifies the page number of an address.
3432 It is used by 'call' instruction to specify the page number of
3433 the symbol.
3434 ENUM
3435 BFD_RELOC_M68HC11_24
3436 ENUMDOC
3437 Motorola 68HC11 reloc.
3438 This is a 24-bit reloc that represents the address with a 16-bit
3439 value and a 8-bit page number. The symbol address is transformed
3440 to follow the 16K memory bank of 68HC12 (seen as mapped in the window).
3442 ENUM
3443 BFD_RELOC_CRIS_BDISP8
3444 ENUMX
3445 BFD_RELOC_CRIS_UNSIGNED_5
3446 ENUMX
3447 BFD_RELOC_CRIS_SIGNED_6
3448 ENUMX
3449 BFD_RELOC_CRIS_UNSIGNED_6
3450 ENUMX
3451 BFD_RELOC_CRIS_UNSIGNED_4
3452 ENUMDOC
3453 These relocs are only used within the CRIS assembler. They are not
3454 (at present) written to any object files.
3455 ENUM
3456 BFD_RELOC_CRIS_COPY
3457 ENUMX
3458 BFD_RELOC_CRIS_GLOB_DAT
3459 ENUMX
3460 BFD_RELOC_CRIS_JUMP_SLOT
3461 ENUMX
3462 BFD_RELOC_CRIS_RELATIVE
3463 ENUMDOC
3464 Relocs used in ELF shared libraries for CRIS.
3465 ENUM
3466 BFD_RELOC_CRIS_32_GOT
3467 ENUMDOC
3468 32-bit offset to symbol-entry within GOT.
3469 ENUM
3470 BFD_RELOC_CRIS_16_GOT
3471 ENUMDOC
3472 16-bit offset to symbol-entry within GOT.
3473 ENUM
3474 BFD_RELOC_CRIS_32_GOTPLT
3475 ENUMDOC
3476 32-bit offset to symbol-entry within GOT, with PLT handling.
3477 ENUM
3478 BFD_RELOC_CRIS_16_GOTPLT
3479 ENUMDOC
3480 16-bit offset to symbol-entry within GOT, with PLT handling.
3481 ENUM
3482 BFD_RELOC_CRIS_32_GOTREL
3483 ENUMDOC
3484 32-bit offset to symbol, relative to GOT.
3485 ENUM
3486 BFD_RELOC_CRIS_32_PLT_GOTREL
3487 ENUMDOC
3488 32-bit offset to symbol with PLT entry, relative to GOT.
3489 ENUM
3490 BFD_RELOC_CRIS_32_PLT_PCREL
3491 ENUMDOC
3492 32-bit offset to symbol with PLT entry, relative to this relocation.
3494 ENUM
3495 BFD_RELOC_860_COPY
3496 ENUMX
3497 BFD_RELOC_860_GLOB_DAT
3498 ENUMX
3499 BFD_RELOC_860_JUMP_SLOT
3500 ENUMX
3501 BFD_RELOC_860_RELATIVE
3502 ENUMX
3503 BFD_RELOC_860_PC26
3504 ENUMX
3505 BFD_RELOC_860_PLT26
3506 ENUMX
3507 BFD_RELOC_860_PC16
3508 ENUMX
3509 BFD_RELOC_860_LOW0
3510 ENUMX
3511 BFD_RELOC_860_SPLIT0
3512 ENUMX
3513 BFD_RELOC_860_LOW1
3514 ENUMX
3515 BFD_RELOC_860_SPLIT1
3516 ENUMX
3517 BFD_RELOC_860_LOW2
3518 ENUMX
3519 BFD_RELOC_860_SPLIT2
3520 ENUMX
3521 BFD_RELOC_860_LOW3
3522 ENUMX
3523 BFD_RELOC_860_LOGOT0
3524 ENUMX
3525 BFD_RELOC_860_SPGOT0
3526 ENUMX
3527 BFD_RELOC_860_LOGOT1
3528 ENUMX
3529 BFD_RELOC_860_SPGOT1
3530 ENUMX
3531 BFD_RELOC_860_LOGOTOFF0
3532 ENUMX
3533 BFD_RELOC_860_SPGOTOFF0
3534 ENUMX
3535 BFD_RELOC_860_LOGOTOFF1
3536 ENUMX
3537 BFD_RELOC_860_SPGOTOFF1
3538 ENUMX
3539 BFD_RELOC_860_LOGOTOFF2
3540 ENUMX
3541 BFD_RELOC_860_LOGOTOFF3
3542 ENUMX
3543 BFD_RELOC_860_LOPC
3544 ENUMX
3545 BFD_RELOC_860_HIGHADJ
3546 ENUMX
3547 BFD_RELOC_860_HAGOT
3548 ENUMX
3549 BFD_RELOC_860_HAGOTOFF
3550 ENUMX
3551 BFD_RELOC_860_HAPC
3552 ENUMX
3553 BFD_RELOC_860_HIGH
3554 ENUMX
3555 BFD_RELOC_860_HIGOT
3556 ENUMX
3557 BFD_RELOC_860_HIGOTOFF
3558 ENUMDOC
3559 Intel i860 Relocations.
3561 ENUM
3562 BFD_RELOC_OPENRISC_ABS_26
3563 ENUMX
3564 BFD_RELOC_OPENRISC_REL_26
3565 ENUMDOC
3566 OpenRISC Relocations.
3568 ENUM
3569 BFD_RELOC_H8_DIR16A8
3570 ENUMX
3571 BFD_RELOC_H8_DIR16R8
3572 ENUMX
3573 BFD_RELOC_H8_DIR24A8
3574 ENUMX
3575 BFD_RELOC_H8_DIR24R8
3576 ENUMX
3577 BFD_RELOC_H8_DIR32A16
3578 ENUMDOC
3579 H8 elf Relocations.
3581 ENUM
3582 BFD_RELOC_XSTORMY16_REL_12
3583 ENUMX
3584 BFD_RELOC_XSTORMY16_24
3585 ENUMX
3586 BFD_RELOC_XSTORMY16_FPTR16
3587 ENUMDOC
3588 Sony Xstormy16 Relocations.
3590 ENUM
3591 BFD_RELOC_VAX_GLOB_DAT
3592 ENUMX
3593 BFD_RELOC_VAX_JMP_SLOT
3594 ENUMX
3595 BFD_RELOC_VAX_RELATIVE
3596 ENUMDOC
3597 Relocations used by VAX ELF.
3599 ENDSENUM
3600 BFD_RELOC_UNUSED
3601 CODE_FRAGMENT
3603 .typedef enum bfd_reloc_code_real bfd_reloc_code_real_type;
3607 FUNCTION
3608 bfd_reloc_type_lookup
3610 SYNOPSIS
3611 reloc_howto_type *
3612 bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code);
3614 DESCRIPTION
3615 Return a pointer to a howto structure which, when
3616 invoked, will perform the relocation @var{code} on data from the
3617 architecture noted.
3621 reloc_howto_type *
3622 bfd_reloc_type_lookup (abfd, code)
3623 bfd *abfd;
3624 bfd_reloc_code_real_type code;
3626 return BFD_SEND (abfd, reloc_type_lookup, (abfd, code));
3629 static reloc_howto_type bfd_howto_32 =
3630 HOWTO (0, 00, 2, 32, false, 0, complain_overflow_bitfield, 0, "VRT32", false, 0xffffffff, 0xffffffff, true);
3633 INTERNAL_FUNCTION
3634 bfd_default_reloc_type_lookup
3636 SYNOPSIS
3637 reloc_howto_type *bfd_default_reloc_type_lookup
3638 (bfd *abfd, bfd_reloc_code_real_type code);
3640 DESCRIPTION
3641 Provides a default relocation lookup routine for any architecture.
3645 reloc_howto_type *
3646 bfd_default_reloc_type_lookup (abfd, code)
3647 bfd *abfd;
3648 bfd_reloc_code_real_type code;
3650 switch (code)
3652 case BFD_RELOC_CTOR:
3653 /* The type of reloc used in a ctor, which will be as wide as the
3654 address - so either a 64, 32, or 16 bitter. */
3655 switch (bfd_get_arch_info (abfd)->bits_per_address)
3657 case 64:
3658 BFD_FAIL ();
3659 case 32:
3660 return &bfd_howto_32;
3661 case 16:
3662 BFD_FAIL ();
3663 default:
3664 BFD_FAIL ();
3666 default:
3667 BFD_FAIL ();
3669 return (reloc_howto_type *) NULL;
3673 FUNCTION
3674 bfd_get_reloc_code_name
3676 SYNOPSIS
3677 const char *bfd_get_reloc_code_name (bfd_reloc_code_real_type code);
3679 DESCRIPTION
3680 Provides a printable name for the supplied relocation code.
3681 Useful mainly for printing error messages.
3684 const char *
3685 bfd_get_reloc_code_name (code)
3686 bfd_reloc_code_real_type code;
3688 if (code > BFD_RELOC_UNUSED)
3689 return 0;
3690 return bfd_reloc_code_real_names[(int)code];
3694 INTERNAL_FUNCTION
3695 bfd_generic_relax_section
3697 SYNOPSIS
3698 boolean bfd_generic_relax_section
3699 (bfd *abfd,
3700 asection *section,
3701 struct bfd_link_info *,
3702 boolean *);
3704 DESCRIPTION
3705 Provides default handling for relaxing for back ends which
3706 don't do relaxing -- i.e., does nothing.
3709 boolean
3710 bfd_generic_relax_section (abfd, section, link_info, again)
3711 bfd *abfd ATTRIBUTE_UNUSED;
3712 asection *section ATTRIBUTE_UNUSED;
3713 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
3714 boolean *again;
3716 *again = false;
3717 return true;
3721 INTERNAL_FUNCTION
3722 bfd_generic_gc_sections
3724 SYNOPSIS
3725 boolean bfd_generic_gc_sections
3726 (bfd *, struct bfd_link_info *);
3728 DESCRIPTION
3729 Provides default handling for relaxing for back ends which
3730 don't do section gc -- i.e., does nothing.
3733 boolean
3734 bfd_generic_gc_sections (abfd, link_info)
3735 bfd *abfd ATTRIBUTE_UNUSED;
3736 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
3738 return true;
3742 INTERNAL_FUNCTION
3743 bfd_generic_merge_sections
3745 SYNOPSIS
3746 boolean bfd_generic_merge_sections
3747 (bfd *, struct bfd_link_info *);
3749 DESCRIPTION
3750 Provides default handling for SEC_MERGE section merging for back ends
3751 which don't have SEC_MERGE support -- i.e., does nothing.
3754 boolean
3755 bfd_generic_merge_sections (abfd, link_info)
3756 bfd *abfd ATTRIBUTE_UNUSED;
3757 struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
3759 return true;
3763 INTERNAL_FUNCTION
3764 bfd_generic_get_relocated_section_contents
3766 SYNOPSIS
3767 bfd_byte *
3768 bfd_generic_get_relocated_section_contents (bfd *abfd,
3769 struct bfd_link_info *link_info,
3770 struct bfd_link_order *link_order,
3771 bfd_byte *data,
3772 boolean relocateable,
3773 asymbol **symbols);
3775 DESCRIPTION
3776 Provides default handling of relocation effort for back ends
3777 which can't be bothered to do it efficiently.
3781 bfd_byte *
3782 bfd_generic_get_relocated_section_contents (abfd, link_info, link_order, data,
3783 relocateable, symbols)
3784 bfd *abfd;
3785 struct bfd_link_info *link_info;
3786 struct bfd_link_order *link_order;
3787 bfd_byte *data;
3788 boolean relocateable;
3789 asymbol **symbols;
3791 /* Get enough memory to hold the stuff. */
3792 bfd *input_bfd = link_order->u.indirect.section->owner;
3793 asection *input_section = link_order->u.indirect.section;
3795 long reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section);
3796 arelent **reloc_vector = NULL;
3797 long reloc_count;
3799 if (reloc_size < 0)
3800 goto error_return;
3802 reloc_vector = (arelent **) bfd_malloc ((bfd_size_type) reloc_size);
3803 if (reloc_vector == NULL && reloc_size != 0)
3804 goto error_return;
3806 /* Read in the section. */
3807 if (!bfd_get_section_contents (input_bfd,
3808 input_section,
3809 (PTR) data,
3810 (bfd_vma) 0,
3811 input_section->_raw_size))
3812 goto error_return;
3814 /* We're not relaxing the section, so just copy the size info. */
3815 input_section->_cooked_size = input_section->_raw_size;
3816 input_section->reloc_done = true;
3818 reloc_count = bfd_canonicalize_reloc (input_bfd,
3819 input_section,
3820 reloc_vector,
3821 symbols);
3822 if (reloc_count < 0)
3823 goto error_return;
3825 if (reloc_count > 0)
3827 arelent **parent;
3828 for (parent = reloc_vector; *parent != (arelent *) NULL;
3829 parent++)
3831 char *error_message = (char *) NULL;
3832 bfd_reloc_status_type r =
3833 bfd_perform_relocation (input_bfd,
3834 *parent,
3835 (PTR) data,
3836 input_section,
3837 relocateable ? abfd : (bfd *) NULL,
3838 &error_message);
3840 if (relocateable)
3842 asection *os = input_section->output_section;
3844 /* A partial link, so keep the relocs. */
3845 os->orelocation[os->reloc_count] = *parent;
3846 os->reloc_count++;
3849 if (r != bfd_reloc_ok)
3851 switch (r)
3853 case bfd_reloc_undefined:
3854 if (!((*link_info->callbacks->undefined_symbol)
3855 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
3856 input_bfd, input_section, (*parent)->address,
3857 true)))
3858 goto error_return;
3859 break;
3860 case bfd_reloc_dangerous:
3861 BFD_ASSERT (error_message != (char *) NULL);
3862 if (!((*link_info->callbacks->reloc_dangerous)
3863 (link_info, error_message, input_bfd, input_section,
3864 (*parent)->address)))
3865 goto error_return;
3866 break;
3867 case bfd_reloc_overflow:
3868 if (!((*link_info->callbacks->reloc_overflow)
3869 (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
3870 (*parent)->howto->name, (*parent)->addend,
3871 input_bfd, input_section, (*parent)->address)))
3872 goto error_return;
3873 break;
3874 case bfd_reloc_outofrange:
3875 default:
3876 abort ();
3877 break;
3883 if (reloc_vector != NULL)
3884 free (reloc_vector);
3885 return data;
3887 error_return:
3888 if (reloc_vector != NULL)
3889 free (reloc_vector);
3890 return NULL;