1 /* BFD support for handling relocation entries.
2 Copyright (C) 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
3 Written by Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
25 BFD maintains relocations in much the same was as it maintains
26 symbols; they are left alone until required, then read in
27 en-mass and traslated into an internal form. There is a common
28 routine <<bfd_perform_relocation>> which acts upon the
29 canonical form to to the actual fixup.
31 Note that relocations are maintained on a per section basis,
32 whilst symbols are maintained on a per BFD basis.
34 All a back end has to do to fit the BFD interface is to create
35 as many <<struct reloc_cache_entry>> as there are relocations
36 in a particular section, and fill in the right bits:
51 typedef arelent, howto manager, Relocations, Relocations
56 This is the structure of a relocation entry:
60 .typedef enum bfd_reloc_status
62 . {* No errors detected *}
65 . {* The relocation was performed, but there was an overflow. *}
68 . {* The address to relocate was not within the section supplied. *}
69 . bfd_reloc_outofrange,
71 . {* Used by special functions *}
75 . bfd_reloc_notsupported,
77 . {* Unsupported relocation size requested. *}
80 . {* The symbol to relocate against was undefined. *}
81 . bfd_reloc_undefined,
83 . {* The relocation was performed, but may not be ok - presently
84 . generated only when linking i960 coff files with i960 b.out
88 . bfd_reloc_status_type;
91 .typedef struct reloc_cache_entry
93 . {* A pointer into the canonical table of pointers *}
94 . struct symbol_cache_entry **sym_ptr_ptr;
96 . {* offset in section *}
97 . bfd_size_type address;
99 . {* addend for relocation value *}
102 . {* Pointer to how to perform the required relocation *}
103 . CONST struct reloc_howto_struct *howto;
112 Here is a description of each of the fields within a relent:
116 The symbol table pointer points to a pointer to the symbol
117 associated with the relocation request. This would naturally
118 be the pointer into the table returned by the back end's
119 get_symtab action. @xref{Symbols}. The symbol is referenced
120 through a pointer to a pointer so that tools like the linker
121 can fix up all the symbols of the same name by modifying only
122 one pointer. The relocation routine looks in the symbol and
123 uses the base of the section the symbol is attached to and the
124 value of the symbol as the initial relocation offset. If the
125 symbol pointer is zero, then the section provided is looked up.
129 The address field gives the offset in bytes from the base of
130 the section data which owns the relocation record to the first
131 byte of relocatable information. The actual data relocated
132 will be relative to this point - for example, a relocation
133 type which modifies the bottom two bytes of a four byte word
134 would not touch the first byte pointed to in a big endian
139 The addend is a value provided by the back end to be added (!)
140 to the relocation offset. Its interpretation is dependent upon
141 the howto. For example, on the 68k the code:
147 | return foo[0x12345678];
150 Could be compiled into:
153 | moveb @@#12345678,d0
159 This could create a reloc pointing to foo, but leave the
160 offset in the data (something like)
163 |RELOCATION RECORDS FOR [.text]:
167 |00000000 4e56 fffc ; linkw fp,#-4
168 |00000004 1039 1234 5678 ; moveb @@#12345678,d0
169 |0000000a 49c0 ; extbl d0
170 |0000000c 4e5e ; unlk fp
174 Using coff and an 88k, some instructions don't have enough
175 space in them to represent the full address range, and
176 pointers have to be loaded in two parts. So you'd get something like:
179 | or.u r13,r0,hi16(_foo+0x12345678)
180 | ld.b r2,r13,lo16(_foo+0x12345678)
184 This should create two relocs, both pointing to _foo, and with
185 0x12340000 in their addend field. The data would consist of:
188 |RELOCATION RECORDS FOR [.text]:
190 |00000002 HVRT16 _foo+0x12340000
191 |00000006 LVRT16 _foo+0x12340000
193 |00000000 5da05678 ; or.u r13,r0,0x5678
194 |00000004 1c4d5678 ; ld.b r2,r13,0x5678
195 |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 odd sized lumps. The designers of
207 the a.out format chose not to use the data within the section
208 for storing part of the offset; all the offset is kept within
209 the reloc. Any thing in the data should be ignored.
212 | sethi %hi(_foo+0x12345678),%g2
213 | ldsb [%g2+%lo(_foo+0x12345678)],%i0
217 Both relocs contains a pointer to foo, and the offsets would
221 |RELOCATION RECORDS FOR [.text]:
223 |00000004 HI22 _foo+0x12345678
224 |00000008 LO10 _foo+0x12345678
226 |00000000 9de3bf90 ; save %sp,-112,%sp
227 |00000004 05000000 ; sethi %hi(_foo+0),%g2
228 |00000008 f048a000 ; ldsb [%g2+%lo(_foo+0)],%i0
229 |0000000c 81c7e008 ; ret
230 |00000010 81e80000 ; restore
235 The howto field can be imagined as a
236 relocation instruction. It is a pointer to a struct which
237 contains information on what to do with all the other
238 information in the reloc record and data section. A back end
239 would normally have a relocation instruction set and turn
240 relocations into pointers to the correct structure on input -
241 but it would be possible to create each howto field on demand.
247 <<enum complain_overflow>>
249 Indicates what sort of overflow checking should be done when
250 performing a relocation.
254 .enum complain_overflow
256 . {* Do not complain on overflow. *}
257 . complain_overflow_dont,
259 . {* Complain if the bitfield overflows, whether it is considered
260 . as signed or unsigned. *}
261 . complain_overflow_bitfield,
263 . {* Complain if the value overflows when considered as signed
265 . complain_overflow_signed,
267 . {* Complain if the value overflows when considered as an
268 . unsigned number. *}
269 . complain_overflow_unsigned
278 The <<reloc_howto_type>> is a structure which contains all the
279 information that BFD needs to know to tie up a back end's data.
282 .struct symbol_cache_entry; {* Forward declaration *}
284 .typedef CONST struct reloc_howto_struct
286 . {* The type field has mainly a documetary use - the back end can
287 . to what it wants with it, though the normally the back end's
288 . external idea of what a reloc number would be would be stored
289 . in this field. For example, the a PC relative word relocation
290 . in a coff environment would have the type 023 - because that's
291 . what the outside world calls a R_PCRWORD reloc. *}
294 . {* The value the final relocation is shifted right by. This drops
295 . unwanted data from the relocation. *}
296 . unsigned int rightshift;
298 . {* The size of the item to be relocated - 0, is one byte, 1 is 2
299 . bytes, 2 is four bytes. A negative value indicates that the
300 . result is to be subtracted from the data. *}
303 . {* The number of bits in the item to be relocated. This is used
304 . when doing overflow checking. *}
305 . unsigned int bitsize;
307 . {* Notes that the relocation is relative to the location in the
308 . data section of the addend. The relocation function will
309 . subtract from the relocation value the address of the location
310 . being relocated. *}
311 . boolean pc_relative;
313 . {* The bit position of the reloc value in the destination.
314 . The relocated value is left shifted by this amount. *}
315 . unsigned int bitpos;
317 . {* What type of overflow error should be checked for when
319 . enum complain_overflow complain_on_overflow;
321 . {* If this field is non null, then the supplied function is
322 . called rather than the normal function. This allows really
323 . strange relocation methods to be accomodated (e.g., i960 callj
325 . bfd_reloc_status_type (*special_function)
326 . PARAMS ((bfd *abfd,
327 . arelent *reloc_entry,
328 . struct symbol_cache_entry *symbol,
330 . asection *input_section,
333 . {* The textual name of the relocation type. *}
336 . {* When performing a partial link, some formats must modify the
337 . relocations rather than the data - this flag signals this.*}
338 . boolean partial_inplace;
340 . {* The src_mask is used to select what parts of the read in data
341 . are to be used in the relocation sum. E.g., if this was an 8 bit
342 . bit of data which we read and relocated, this would be
343 . 0x000000ff. When we have relocs which have an addend, such as
344 . sun4 extended relocs, the value in the offset part of a
345 . relocating field is garbage so we never use it. In this case
346 . the mask would be 0x00000000. *}
349 . {* The dst_mask is what parts of the instruction are replaced
350 . into the instruction. In most cases src_mask == dst_mask,
351 . except in the above special case, where dst_mask would be
352 . 0x000000ff, and src_mask would be 0x00000000. *}
355 . {* When some formats create PC relative instructions, they leave
356 . the value of the pc of the place being relocated in the offset
357 . slot of the instruction, so that a PC relative relocation can
358 . be made just by adding in an ordinary offset (e.g., sun3 a.out).
359 . Some formats leave the displacement part of an instruction
360 . empty (e.g., m88k bcs), this flag signals the fact.*}
361 . boolean pcrel_offset;
372 The HOWTO define is horrible and will go away.
375 .#define HOWTO(C, R,S,B, P, BI, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC) \
376 . {(unsigned)C,R,S,B, P, BI, O,SF,NAME,INPLACE,MASKSRC,MASKDST,PC}
379 And will be replaced with the totally magic way. But for the
380 moment, we are compatible, so do it this way..
383 .#define NEWHOWTO( FUNCTION, NAME,SIZE,REL,IN) HOWTO(0,0,SIZE,0,REL,0,complain_overflow_dont,FUNCTION, NAME,false,0,0,IN)
386 Helper routine to turn a symbol into a relocation value.
388 .#define HOWTO_PREPARE(relocation, symbol) \
390 . if (symbol != (asymbol *)NULL) { \
391 . if (bfd_is_com_section (symbol->section)) { \
395 . relocation = symbol->value; \
408 How relocs are tied together
410 .typedef unsigned char bfd_byte;
412 .typedef struct relent_chain {
414 . struct relent_chain *next;
423 bfd_perform_relocation
426 bfd_reloc_status_type
427 bfd_perform_relocation
429 arelent *reloc_entry,
431 asection *input_section,
435 If an output_bfd is supplied to this function the generated
436 image will be relocatable, the relocations are copied to the
437 output file after they have been changed to reflect the new
438 state of the world. There are two ways of reflecting the
439 results of partial linkage in an output file; by modifying the
440 output data in place, and by modifying the relocation record.
441 Some native formats (e.g., basic a.out and basic coff) have no
442 way of specifying an addend in the relocation type, so the
443 addend has to go in the output data. This is no big deal
444 since in these formats the output data slot will always be big
445 enough for the addend. Complex reloc types with addends were
446 invented to solve just this problem.
451 bfd_reloc_status_type
452 DEFUN(bfd_perform_relocation
,(abfd
,
458 arelent
*reloc_entry AND
460 asection
*input_section AND
464 bfd_reloc_status_type flag
= bfd_reloc_ok
;
465 bfd_size_type addr
= reloc_entry
->address
;
466 bfd_vma output_base
= 0;
467 reloc_howto_type
*howto
= reloc_entry
->howto
;
468 asection
*reloc_target_output_section
;
472 symbol
= *( reloc_entry
->sym_ptr_ptr
);
473 if ((symbol
->section
== &bfd_abs_section
)
474 && output_bfd
!= (bfd
*)NULL
)
476 reloc_entry
->address
+= input_section
->output_offset
;
480 if ((symbol
->section
== &bfd_und_section
) && output_bfd
== (bfd
*)NULL
)
481 flag
= bfd_reloc_undefined
;
483 /* If there is a function supplied to handle this relocation type,
484 call it. It'll return `bfd_reloc_continue' if further processing
486 if (howto
->special_function
)
488 bfd_reloc_status_type cont
;
489 cont
= howto
->special_function (abfd
, reloc_entry
, symbol
, data
,
490 input_section
, output_bfd
);
491 if (cont
!= bfd_reloc_continue
)
495 /* Is the address of the relocation really within the section? */
496 if (reloc_entry
->address
> input_section
->_cooked_size
)
497 return bfd_reloc_outofrange
;
499 /* Work out which section the relocation is targetted at and the
500 initial relocation command value. */
502 /* Get symbol value. (Common symbols are special.) */
503 if (bfd_is_com_section (symbol
->section
))
506 relocation
= symbol
->value
;
509 reloc_target_output_section
= symbol
->section
->output_section
;
511 /* Convert input-section-relative symbol value to absolute. */
512 if (output_bfd
&& howto
->partial_inplace
==false)
515 output_base
= reloc_target_output_section
->vma
;
517 relocation
+= output_base
+ symbol
->section
->output_offset
;
519 /* Add in supplied addend. */
520 relocation
+= reloc_entry
->addend
;
522 if (howto
->pc_relative
== true)
524 /* Anything which started out as pc relative should end up that
527 There are two ways we can see a pcrel instruction. Sometimes
528 the pcrel displacement has been partially calculated, it
529 includes the distance from the start of the section to the
530 instruction in it (e.g., sun3), and sometimes the field is
531 totally blank - e.g., m88kbcs. */
534 input_section
->output_section
->vma
+ input_section
->output_offset
;
536 if (howto
->pcrel_offset
== true)
537 relocation
-= reloc_entry
->address
;
540 if (output_bfd
!= (bfd
*)NULL
)
542 if ( howto
->partial_inplace
== false)
544 /* This is a partial relocation, and we want to apply the relocation
545 to the reloc entry rather than the raw data. Modify the reloc
546 inplace to reflect what we now know. */
547 reloc_entry
->addend
= relocation
;
548 reloc_entry
->address
+= input_section
->output_offset
;
553 /* This is a partial relocation, but inplace, so modify the
556 If we've relocated with a symbol with a section, change
557 into a ref to the section belonging to the symbol. */
559 reloc_entry
->address
+= input_section
->output_offset
;
562 if (abfd
->xvec
->flavour
== bfd_target_coff_flavour
)
564 relocation
-= reloc_entry
->addend
;
565 reloc_entry
->addend
= 0;
569 reloc_entry
->addend
= relocation
;
575 reloc_entry
->addend
= 0;
578 /* FIXME: This overflow checking is incomplete, because the value
579 might have overflowed before we get here. For a correct check we
580 need to compute the value in a size larger than bitsize, but we
581 can't reasonably do that for a reloc the same size as a host
583 FIXME: We should also do overflow checking on the result after
584 adding in the value contained in the object file. */
585 if (howto
->complain_on_overflow
!= complain_overflow_dont
)
589 /* Get the value that will be used for the relocation, but
590 starting at bit position zero. */
591 if (howto
->rightshift
> howto
->bitpos
)
592 check
= relocation
>> (howto
->rightshift
- howto
->bitpos
);
594 check
= relocation
<< (howto
->bitpos
- howto
->rightshift
);
595 switch (howto
->complain_on_overflow
)
597 case complain_overflow_signed
:
599 /* Assumes two's complement. */
600 bfd_signed_vma reloc_signed_max
= (1 << (howto
->bitsize
- 1)) - 1;
601 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
603 /* The above right shift is incorrect for a signed value.
604 Fix it up by forcing on the upper bits. */
605 if (howto
->rightshift
> howto
->bitpos
606 && (bfd_signed_vma
) relocation
< 0)
607 check
|= ((bfd_vma
) -1
609 >> (howto
->rightshift
- howto
->bitpos
)));
610 if ((bfd_signed_vma
) check
> reloc_signed_max
611 || (bfd_signed_vma
) check
< reloc_signed_min
)
612 flag
= bfd_reloc_overflow
;
615 case complain_overflow_unsigned
:
617 /* Assumes two's complement. This expression avoids
618 overflow if howto->bitsize is the number of bits in
620 bfd_vma reloc_unsigned_max
=
621 (((1 << (howto
->bitsize
- 1)) - 1) << 1) | 1;
623 if ((bfd_vma
) check
> reloc_unsigned_max
)
624 flag
= bfd_reloc_overflow
;
627 case complain_overflow_bitfield
:
629 /* Assumes two's complement. This expression avoids
630 overflow if howto->bitsize is the number of bits in
632 bfd_vma reloc_bits
= (((1 << (howto
->bitsize
- 1)) - 1) << 1) | 1;
634 if (((bfd_vma
) check
&~ reloc_bits
) != 0
635 && ((bfd_vma
) check
&~ reloc_bits
) != (-1 &~ reloc_bits
))
637 /* The above right shift is incorrect for a signed
638 value. See if turning on the upper bits fixes the
640 if (howto
->rightshift
> howto
->bitpos
641 && (bfd_signed_vma
) relocation
< 0)
643 check
|= ((bfd_vma
) -1
645 >> (howto
->rightshift
- howto
->bitpos
)));
646 if (((bfd_vma
) check
&~ reloc_bits
) != (-1 &~ reloc_bits
))
647 flag
= bfd_reloc_overflow
;
650 flag
= bfd_reloc_overflow
;
660 Either we are relocating all the way, or we don't want to apply
661 the relocation to the reloc entry (probably because there isn't
662 any room in the output format to describe addends to relocs)
664 relocation
>>= howto
->rightshift
;
666 /* Shift everything up to where it's going to be used */
668 relocation
<<= howto
->bitpos
;
670 /* Wait for the day when all have the mask in them */
673 i instruction to be left alone
674 o offset within instruction
675 r relocation offset to apply
684 i i i i i o o o o o from bfd_get<size>
685 and S S S S S to get the size offset we want
686 + r r r r r r r r r r to get the final value to place
687 and D D D D D to chop to right size
688 -----------------------
691 ... i i i i i o o o o o from bfd_get<size>
692 and N N N N N get instruction
693 -----------------------
699 -----------------------
700 R R R R R R R R R R put into bfd_put<size>
704 x = ( (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask))
710 char x
= bfd_get_8(abfd
, (char *)data
+ addr
);
712 bfd_put_8(abfd
,x
, (unsigned char *) data
+ addr
);
719 short x
= bfd_get_16(abfd
, (bfd_byte
*)data
+ addr
);
721 bfd_put_16(abfd
, x
, (unsigned char *)data
+ addr
);
727 long x
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ addr
);
729 bfd_put_32 (abfd
, x
, (bfd_byte
*)data
+ addr
);
734 long x
= bfd_get_32(abfd
, (bfd_byte
*) data
+ addr
);
735 relocation
= -relocation
;
737 bfd_put_32(abfd
,x
, (bfd_byte
*)data
+ addr
);
749 bfd_vma x
= bfd_get_64 (abfd
, (bfd_byte
*) data
+ addr
);
751 bfd_put_64 (abfd
, x
, (bfd_byte
*) data
+ addr
);
758 return bfd_reloc_other
;
769 howto manager, , typedef arelent, Relocations
774 When an application wants to create a relocation, but doesn't
775 know what the target machine might call it, it can find out by
776 using this bit of code.
785 The insides of a reloc code
789 .typedef enum bfd_reloc_code_real
792 . {* 64 bits wide, simple reloc *}
794 . {* 64 bits, PC-relative *}
795 . BFD_RELOC_64_PCREL,
797 . {* 32 bits wide, simple reloc *}
799 . {* 32 bits, PC-relative *}
800 . BFD_RELOC_32_PCREL,
802 . {* 16 bits wide, simple reloc *}
804 . {* 16 bits, PC-relative *}
805 . BFD_RELOC_16_PCREL,
807 . {* 8 bits wide, simple *}
809 . {* 8 bits wide, pc relative *}
811 . {* 8 bits wide, but used to form an address like 0xffnn *}
814 . {* The type of reloc used to build a contructor table - at the
815 . moment probably a 32 bit wide abs address, but the cpu can
820 . {* High 22 bits of 32-bit value; simple reloc. *}
825 . {* Reloc types used for i960/b.out. *}
826 . BFD_RELOC_24_PCREL,
827 . BFD_RELOC_I960_CALLJ,
829 . {* 32-bit pc-relative, shifted right 2 bits (i.e., 30-bit
830 . word displacement, e.g. for SPARC) *}
831 . BFD_RELOC_32_PCREL_S2,
833 . {* now for the sparc/elf codes *}
834 . BFD_RELOC_NONE, {* actually used *}
835 . BFD_RELOC_SPARC_WDISP22,
838 . BFD_RELOC_SPARC_GOT10,
839 . BFD_RELOC_SPARC_GOT13,
840 . BFD_RELOC_SPARC_GOT22,
841 . BFD_RELOC_SPARC_PC10,
842 . BFD_RELOC_SPARC_PC22,
843 . BFD_RELOC_SPARC_WPLT30,
844 . BFD_RELOC_SPARC_COPY,
845 . BFD_RELOC_SPARC_GLOB_DAT,
846 . BFD_RELOC_SPARC_JMP_SLOT,
847 . BFD_RELOC_SPARC_RELATIVE,
848 . BFD_RELOC_SPARC_UA32,
850 . {* this one is a.out specific? *}
851 . BFD_RELOC_SPARC_BASE13,
852 . BFD_RELOC_SPARC_BASE22,
854 . {* start-sanitize-v9 *}
855 . BFD_RELOC_SPARC_10,
856 . BFD_RELOC_SPARC_11,
857 .#define BFD_RELOC_SPARC_64 BFD_RELOC_64
858 . BFD_RELOC_SPARC_OLO10,
859 . BFD_RELOC_SPARC_HH22,
860 . BFD_RELOC_SPARC_HM10,
861 . BFD_RELOC_SPARC_LM22,
862 . BFD_RELOC_SPARC_PC_HH22,
863 . BFD_RELOC_SPARC_PC_HM10,
864 . BFD_RELOC_SPARC_PC_LM22,
865 . BFD_RELOC_SPARC_WDISP16,
866 . BFD_RELOC_SPARC_WDISP19,
867 . BFD_RELOC_SPARC_GLOB_JMP,
868 . BFD_RELOC_SPARC_LO7,
869 . {* end-sanitize-v9 *}
871 . {* Bits 27..2 of the relocation address shifted right 2 bits;
872 . simple reloc otherwise. *}
873 . BFD_RELOC_MIPS_JMP,
875 . {* signed 16-bit pc-relative, shifted right 2 bits (e.g. for MIPS) *}
876 . BFD_RELOC_16_PCREL_S2,
878 . {* High 16 bits of 32-bit value; simple reloc. *}
880 . {* High 16 bits of 32-bit value but the low 16 bits will be sign
881 . extended and added to form the final result. If the low 16
882 . bits form a negative number, we need to add one to the high value
883 . to compensate for the borrow when the low bits are added. *}
888 . {* 16 bit relocation relative to the global pointer. *}
889 . BFD_RELOC_MIPS_GPREL,
891 . {* These are, so far, specific to HPPA processors. I'm not sure that
892 . some don't duplicate other reloc types, such as BFD_RELOC_32 and
893 . _32_PCREL. Also, many more were in the list I got that don't
894 . fit in well in the model BFD uses, so I've omitted them for now.
895 . If we do make this reloc type get used for code that really does
896 . implement the funky reloc types, they'll have to be added to this
902 . BFD_RELOC_HPPA_L21,
903 . BFD_RELOC_HPPA_R11,
904 . BFD_RELOC_HPPA_R14,
905 . BFD_RELOC_HPPA_R17,
906 . BFD_RELOC_HPPA_LS21,
907 . BFD_RELOC_HPPA_RS11,
908 . BFD_RELOC_HPPA_RS14,
909 . BFD_RELOC_HPPA_RS17,
910 . BFD_RELOC_HPPA_LD21,
911 . BFD_RELOC_HPPA_RD11,
912 . BFD_RELOC_HPPA_RD14,
913 . BFD_RELOC_HPPA_RD17,
914 . BFD_RELOC_HPPA_LR21,
915 . BFD_RELOC_HPPA_RR14,
916 . BFD_RELOC_HPPA_RR17,
917 . BFD_RELOC_HPPA_GOTOFF_11,
918 . BFD_RELOC_HPPA_GOTOFF_14,
919 . BFD_RELOC_HPPA_GOTOFF_L21,
920 . BFD_RELOC_HPPA_GOTOFF_R11,
921 . BFD_RELOC_HPPA_GOTOFF_R14,
922 . BFD_RELOC_HPPA_GOTOFF_LS21,
923 . BFD_RELOC_HPPA_GOTOFF_RS11,
924 . BFD_RELOC_HPPA_GOTOFF_RS14,
925 . BFD_RELOC_HPPA_GOTOFF_LD21,
926 . BFD_RELOC_HPPA_GOTOFF_RD11,
927 . BFD_RELOC_HPPA_GOTOFF_RD14,
928 . BFD_RELOC_HPPA_GOTOFF_LR21,
929 . BFD_RELOC_HPPA_GOTOFF_RR14,
930 . BFD_RELOC_HPPA_DLT_32,
931 . BFD_RELOC_HPPA_DLT_11,
932 . BFD_RELOC_HPPA_DLT_14,
933 . BFD_RELOC_HPPA_DLT_L21,
934 . BFD_RELOC_HPPA_DLT_R11,
935 . BFD_RELOC_HPPA_DLT_R14,
936 . BFD_RELOC_HPPA_ABS_CALL_11,
937 . BFD_RELOC_HPPA_ABS_CALL_14,
938 . BFD_RELOC_HPPA_ABS_CALL_17,
939 . BFD_RELOC_HPPA_ABS_CALL_L21,
940 . BFD_RELOC_HPPA_ABS_CALL_R11,
941 . BFD_RELOC_HPPA_ABS_CALL_R14,
942 . BFD_RELOC_HPPA_ABS_CALL_R17,
943 . BFD_RELOC_HPPA_ABS_CALL_LS21,
944 . BFD_RELOC_HPPA_ABS_CALL_RS11,
945 . BFD_RELOC_HPPA_ABS_CALL_RS14,
946 . BFD_RELOC_HPPA_ABS_CALL_RS17,
947 . BFD_RELOC_HPPA_ABS_CALL_LD21,
948 . BFD_RELOC_HPPA_ABS_CALL_RD11,
949 . BFD_RELOC_HPPA_ABS_CALL_RD14,
950 . BFD_RELOC_HPPA_ABS_CALL_RD17,
951 . BFD_RELOC_HPPA_ABS_CALL_LR21,
952 . BFD_RELOC_HPPA_ABS_CALL_RR14,
953 . BFD_RELOC_HPPA_ABS_CALL_RR17,
954 . BFD_RELOC_HPPA_PCREL_CALL_11,
955 . BFD_RELOC_HPPA_PCREL_CALL_12,
956 . BFD_RELOC_HPPA_PCREL_CALL_14,
957 . BFD_RELOC_HPPA_PCREL_CALL_17,
958 . BFD_RELOC_HPPA_PCREL_CALL_L21,
959 . BFD_RELOC_HPPA_PCREL_CALL_R11,
960 . BFD_RELOC_HPPA_PCREL_CALL_R14,
961 . BFD_RELOC_HPPA_PCREL_CALL_R17,
962 . BFD_RELOC_HPPA_PCREL_CALL_LS21,
963 . BFD_RELOC_HPPA_PCREL_CALL_RS11,
964 . BFD_RELOC_HPPA_PCREL_CALL_RS14,
965 . BFD_RELOC_HPPA_PCREL_CALL_RS17,
966 . BFD_RELOC_HPPA_PCREL_CALL_LD21,
967 . BFD_RELOC_HPPA_PCREL_CALL_RD11,
968 . BFD_RELOC_HPPA_PCREL_CALL_RD14,
969 . BFD_RELOC_HPPA_PCREL_CALL_RD17,
970 . BFD_RELOC_HPPA_PCREL_CALL_LR21,
971 . BFD_RELOC_HPPA_PCREL_CALL_RR14,
972 . BFD_RELOC_HPPA_PCREL_CALL_RR17,
973 . BFD_RELOC_HPPA_PLABEL_32,
974 . BFD_RELOC_HPPA_PLABEL_11,
975 . BFD_RELOC_HPPA_PLABEL_14,
976 . BFD_RELOC_HPPA_PLABEL_L21,
977 . BFD_RELOC_HPPA_PLABEL_R11,
978 . BFD_RELOC_HPPA_PLABEL_R14,
979 . BFD_RELOC_HPPA_UNWIND_ENTRY,
980 . BFD_RELOC_HPPA_UNWIND_ENTRIES,
982 . {* i386/elf relocations *}
983 . BFD_RELOC_386_GOT32,
984 . BFD_RELOC_386_PLT32,
985 . BFD_RELOC_386_COPY,
986 . BFD_RELOC_386_GLOB_DAT,
987 . BFD_RELOC_386_JUMP_SLOT,
988 . BFD_RELOC_386_RELATIVE,
989 . BFD_RELOC_386_GOTOFF,
990 . BFD_RELOC_386_GOTPC,
992 . {* this must be the highest numeric value *}
994 . } bfd_reloc_code_real_type;
1001 bfd_reloc_type_lookup
1004 CONST struct reloc_howto_struct *
1005 bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code);
1008 This routine returns a pointer to a howto struct which when
1009 invoked, will perform the supplied relocation on data from the
1015 CONST
struct reloc_howto_struct
*
1016 DEFUN(bfd_reloc_type_lookup
,(abfd
, code
),
1018 bfd_reloc_code_real_type code
)
1020 return BFD_SEND (abfd
, reloc_type_lookup
, (abfd
, code
));
1023 static reloc_howto_type bfd_howto_32
=
1024 HOWTO(0, 00,2,32,false,0,complain_overflow_bitfield
,0,"VRT32", false,0xffffffff,0xffffffff,true);
1029 bfd_default_reloc_type_lookup
1032 CONST struct reloc_howto_struct *bfd_default_reloc_type_lookup
1034 bfd_reloc_code_real_type code);
1037 Provides a default relocation lookup routine for any architecture.
1042 CONST
struct reloc_howto_struct
*
1043 DEFUN(bfd_default_reloc_type_lookup
, (abfd
, code
),
1045 bfd_reloc_code_real_type code
)
1049 case BFD_RELOC_CTOR
:
1050 /* The type of reloc used in a ctor, which will be as wide as the
1051 address - so either a 64, 32, or 16 bitter.. */
1052 switch (bfd_get_arch_info (abfd
)->bits_per_address
) {
1056 return &bfd_howto_32
;
1065 return (CONST
struct reloc_howto_struct
*)NULL
;
1071 bfd_generic_relax_section
1074 boolean bfd_generic_relax_section
1080 Provides default handling for relaxing for back ends which
1081 don't do relaxing -- i.e., does nothing.
1085 DEFUN(bfd_generic_relax_section
,(abfd
, section
, symbols
),
1087 asection
*section AND
1098 bfd_generic_get_relocated_section_contents
1102 bfd_generic_get_relocated_section_contents (bfd *abfd,
1103 struct bfd_seclet *seclet,
1105 boolean relocateable);
1108 Provides default handling of relocation effort for back ends
1109 which can't be bothered to do it efficiently.
1114 DEFUN(bfd_generic_get_relocated_section_contents
,(abfd
,
1119 struct bfd_seclet
*seclet AND
1121 boolean relocateable
)
1123 extern bfd_error_vector_type bfd_error_vector
;
1125 /* Get enough memory to hold the stuff */
1126 bfd
*input_bfd
= seclet
->u
.indirect
.section
->owner
;
1127 asection
*input_section
= seclet
->u
.indirect
.section
;
1131 size_t reloc_size
= bfd_get_reloc_upper_bound(input_bfd
, input_section
);
1132 arelent
**reloc_vector
= (arelent
**) alloca(reloc_size
);
1134 /* read in the section */
1135 bfd_get_section_contents(input_bfd
,
1139 input_section
->_raw_size
);
1141 /* We're not relaxing the section, so just copy the size info */
1142 input_section
->_cooked_size
= input_section
->_raw_size
;
1143 input_section
->reloc_done
= true;
1146 if (bfd_canonicalize_reloc(input_bfd
,
1149 seclet
->u
.indirect
.symbols
) )
1152 for (parent
= reloc_vector
; * parent
!= (arelent
*)NULL
;
1155 bfd_reloc_status_type r
=
1156 bfd_perform_relocation(input_bfd
,
1160 relocateable
? abfd
: (bfd
*) NULL
);
1164 asection
*os
= input_section
->output_section
;
1166 /* A partial link, so keep the relocs */
1167 os
->orelocation
[os
->reloc_count
] = *parent
;
1171 if (r
!= bfd_reloc_ok
)
1175 case bfd_reloc_undefined
:
1176 bfd_error_vector
.undefined_symbol(*parent
, seclet
);
1178 case bfd_reloc_dangerous
:
1179 bfd_error_vector
.reloc_dangerous(*parent
, seclet
);
1181 case bfd_reloc_outofrange
:
1182 case bfd_reloc_overflow
:
1183 bfd_error_vector
.reloc_value_truncated(*parent
, seclet
);