1 /* ADI Blackfin BFD support for 32-bit ELF.
2 Copyright 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
3 Free Software Foundation, Inc.
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 3 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., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
30 /* FUNCTION : bfin_pltpc_reloc
31 ABSTRACT : TODO : figure out how to handle pltpc relocs. */
32 static bfd_reloc_status_type
34 bfd
*abfd ATTRIBUTE_UNUSED
,
35 arelent
*reloc_entry ATTRIBUTE_UNUSED
,
36 asymbol
*symbol ATTRIBUTE_UNUSED
,
37 void * data ATTRIBUTE_UNUSED
,
38 asection
*input_section ATTRIBUTE_UNUSED
,
39 bfd
*output_bfd ATTRIBUTE_UNUSED
,
40 char **error_message ATTRIBUTE_UNUSED
)
42 bfd_reloc_status_type flag
= bfd_reloc_ok
;
47 static bfd_reloc_status_type
48 bfin_pcrel24_reloc (bfd
*abfd
,
52 asection
*input_section
,
54 char **error_message ATTRIBUTE_UNUSED
)
57 bfd_size_type addr
= reloc_entry
->address
;
58 bfd_vma output_base
= 0;
59 reloc_howto_type
*howto
= reloc_entry
->howto
;
60 asection
*output_section
;
61 bfd_boolean relocatable
= (output_bfd
!= NULL
);
63 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
64 return bfd_reloc_outofrange
;
66 if (bfd_is_und_section (symbol
->section
)
67 && (symbol
->flags
& BSF_WEAK
) == 0
69 return bfd_reloc_undefined
;
71 if (bfd_is_com_section (symbol
->section
))
74 relocation
= symbol
->value
;
76 output_section
= symbol
->section
->output_section
;
81 output_base
= output_section
->vma
;
83 if (!relocatable
|| !strcmp (symbol
->name
, symbol
->section
->name
))
84 relocation
+= output_base
+ symbol
->section
->output_offset
;
86 if (!relocatable
&& !strcmp (symbol
->name
, symbol
->section
->name
))
87 relocation
+= reloc_entry
->addend
;
89 relocation
-= input_section
->output_section
->vma
+ input_section
->output_offset
;
90 relocation
-= reloc_entry
->address
;
92 if (howto
->complain_on_overflow
!= complain_overflow_dont
)
94 bfd_reloc_status_type status
;
95 status
= bfd_check_overflow (howto
->complain_on_overflow
,
98 bfd_arch_bits_per_address(abfd
),
100 if (status
!= bfd_reloc_ok
)
104 /* if rightshift is 1 and the number odd, return error. */
105 if (howto
->rightshift
&& (relocation
& 0x01))
107 (*_bfd_error_handler
) (_("relocation should be even number"));
108 return bfd_reloc_overflow
;
111 relocation
>>= (bfd_vma
) howto
->rightshift
;
112 /* Shift everything up to where it's going to be used. */
114 relocation
<<= (bfd_vma
) howto
->bitpos
;
118 reloc_entry
->address
+= input_section
->output_offset
;
119 reloc_entry
->addend
+= symbol
->section
->output_offset
;
125 /* We are getting reloc_entry->address 2 byte off from
126 the start of instruction. Assuming absolute postion
127 of the reloc data. But, following code had been written assuming
128 reloc address is starting at begining of instruction.
129 To compensate that I have increased the value of
130 relocation by 1 (effectively 2) and used the addr -2 instead of addr. */
133 x
= bfd_get_16 (abfd
, (bfd_byte
*) data
+ addr
- 2);
134 x
= (x
& 0xff00) | ((relocation
>> 16) & 0xff);
135 bfd_put_16 (abfd
, x
, (unsigned char *) data
+ addr
- 2);
137 x
= bfd_get_16 (abfd
, (bfd_byte
*) data
+ addr
);
138 x
= relocation
& 0xFFFF;
139 bfd_put_16 (abfd
, x
, (unsigned char *) data
+ addr
);
144 static bfd_reloc_status_type
145 bfin_imm16_reloc (bfd
*abfd
,
146 arelent
*reloc_entry
,
149 asection
*input_section
,
151 char **error_message ATTRIBUTE_UNUSED
)
153 bfd_vma relocation
, x
;
154 bfd_size_type reloc_addr
= reloc_entry
->address
;
155 bfd_vma output_base
= 0;
156 reloc_howto_type
*howto
= reloc_entry
->howto
;
157 asection
*output_section
;
158 bfd_boolean relocatable
= (output_bfd
!= NULL
);
160 /* Is the address of the relocation really within the section? */
161 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
162 return bfd_reloc_outofrange
;
164 if (bfd_is_und_section (symbol
->section
)
165 && (symbol
->flags
& BSF_WEAK
) == 0
167 return bfd_reloc_undefined
;
169 output_section
= symbol
->section
->output_section
;
170 relocation
= symbol
->value
;
172 /* Convert input-section-relative symbol value to absolute. */
176 output_base
= output_section
->vma
;
178 if (!relocatable
|| !strcmp (symbol
->name
, symbol
->section
->name
))
179 relocation
+= output_base
+ symbol
->section
->output_offset
;
181 /* Add in supplied addend. */
182 relocation
+= reloc_entry
->addend
;
186 reloc_entry
->address
+= input_section
->output_offset
;
187 reloc_entry
->addend
+= symbol
->section
->output_offset
;
191 reloc_entry
->addend
= 0;
194 if (howto
->complain_on_overflow
!= complain_overflow_dont
)
196 bfd_reloc_status_type flag
;
197 flag
= bfd_check_overflow (howto
->complain_on_overflow
,
200 bfd_arch_bits_per_address(abfd
),
202 if (flag
!= bfd_reloc_ok
)
206 /* Here the variable relocation holds the final address of the
207 symbol we are relocating against, plus any addend. */
209 relocation
>>= (bfd_vma
) howto
->rightshift
;
211 bfd_put_16 (abfd
, x
, (unsigned char *) data
+ reloc_addr
);
216 static bfd_reloc_status_type
217 bfin_byte4_reloc (bfd
*abfd
,
218 arelent
*reloc_entry
,
221 asection
*input_section
,
223 char **error_message ATTRIBUTE_UNUSED
)
225 bfd_vma relocation
, x
;
226 bfd_size_type addr
= reloc_entry
->address
;
227 bfd_vma output_base
= 0;
228 asection
*output_section
;
229 bfd_boolean relocatable
= (output_bfd
!= NULL
);
231 /* Is the address of the relocation really within the section? */
232 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
233 return bfd_reloc_outofrange
;
235 if (bfd_is_und_section (symbol
->section
)
236 && (symbol
->flags
& BSF_WEAK
) == 0
238 return bfd_reloc_undefined
;
240 output_section
= symbol
->section
->output_section
;
241 relocation
= symbol
->value
;
242 /* Convert input-section-relative symbol value to absolute. */
246 output_base
= output_section
->vma
;
249 && symbol
->section
->name
250 && !strcmp (symbol
->name
, symbol
->section
->name
))
253 relocation
+= output_base
+ symbol
->section
->output_offset
;
256 relocation
+= reloc_entry
->addend
;
260 /* This output will be relocatable ... like ld -r. */
261 reloc_entry
->address
+= input_section
->output_offset
;
262 reloc_entry
->addend
+= symbol
->section
->output_offset
;
266 reloc_entry
->addend
= 0;
269 /* Here the variable relocation holds the final address of the
270 symbol we are relocating against, plus any addend. */
271 x
= relocation
& 0xFFFF0000;
273 bfd_put_16 (abfd
, x
, (unsigned char *) data
+ addr
+ 2);
275 x
= relocation
& 0x0000FFFF;
276 bfd_put_16 (abfd
, x
, (unsigned char *) data
+ addr
);
280 /* bfin_bfd_reloc handles the blackfin arithmetic relocations.
281 Use this instead of bfd_perform_relocation. */
282 static bfd_reloc_status_type
283 bfin_bfd_reloc (bfd
*abfd
,
284 arelent
*reloc_entry
,
287 asection
*input_section
,
289 char **error_message ATTRIBUTE_UNUSED
)
292 bfd_size_type addr
= reloc_entry
->address
;
293 bfd_vma output_base
= 0;
294 reloc_howto_type
*howto
= reloc_entry
->howto
;
295 asection
*output_section
;
296 bfd_boolean relocatable
= (output_bfd
!= NULL
);
298 /* Is the address of the relocation really within the section? */
299 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
300 return bfd_reloc_outofrange
;
302 if (bfd_is_und_section (symbol
->section
)
303 && (symbol
->flags
& BSF_WEAK
) == 0
305 return bfd_reloc_undefined
;
307 /* Get symbol value. (Common symbols are special.) */
308 if (bfd_is_com_section (symbol
->section
))
311 relocation
= symbol
->value
;
313 output_section
= symbol
->section
->output_section
;
315 /* Convert input-section-relative symbol value to absolute. */
319 output_base
= output_section
->vma
;
321 if (!relocatable
|| !strcmp (symbol
->name
, symbol
->section
->name
))
322 relocation
+= output_base
+ symbol
->section
->output_offset
;
324 if (!relocatable
&& !strcmp (symbol
->name
, symbol
->section
->name
))
326 /* Add in supplied addend. */
327 relocation
+= reloc_entry
->addend
;
330 /* Here the variable relocation holds the final address of the
331 symbol we are relocating against, plus any addend. */
333 if (howto
->pc_relative
== TRUE
)
335 relocation
-= input_section
->output_section
->vma
+ input_section
->output_offset
;
337 if (howto
->pcrel_offset
== TRUE
)
338 relocation
-= reloc_entry
->address
;
343 reloc_entry
->address
+= input_section
->output_offset
;
344 reloc_entry
->addend
+= symbol
->section
->output_offset
;
347 if (howto
->complain_on_overflow
!= complain_overflow_dont
)
349 bfd_reloc_status_type status
;
351 status
= bfd_check_overflow (howto
->complain_on_overflow
,
354 bfd_arch_bits_per_address(abfd
),
356 if (status
!= bfd_reloc_ok
)
360 /* If rightshift is 1 and the number odd, return error. */
361 if (howto
->rightshift
&& (relocation
& 0x01))
363 (*_bfd_error_handler
) (_("relocation should be even number"));
364 return bfd_reloc_overflow
;
367 relocation
>>= (bfd_vma
) howto
->rightshift
;
369 /* Shift everything up to where it's going to be used. */
371 relocation
<<= (bfd_vma
) howto
->bitpos
;
374 x = ( (x & ~howto->dst_mask) | (relocation & howto->dst_mask))
376 /* handle 8 and 16 bit relocations here. */
381 char x
= bfd_get_8 (abfd
, (char *) data
+ addr
);
383 bfd_put_8 (abfd
, x
, (unsigned char *) data
+ addr
);
389 unsigned short x
= bfd_get_16 (abfd
, (bfd_byte
*) data
+ addr
);
391 bfd_put_16 (abfd
, (bfd_vma
) x
, (unsigned char *) data
+ addr
);
396 return bfd_reloc_other
;
402 /* HOWTO Table for blackfin.
403 Blackfin relocations are fairly complicated.
404 Some of the salient features are
405 a. Even numbered offsets. A number of (not all) relocations are
406 even numbered. This means that the rightmost bit is not stored.
407 Needs to right shift by 1 and check to see if value is not odd
408 b. A relocation can be an expression. An expression takes on
409 a variety of relocations arranged in a stack.
410 As a result, we cannot use the standard generic function as special
411 function. We will have our own, which is very similar to the standard
412 generic function except that it understands how to get the value from
413 the relocation stack. . */
415 #define BFIN_RELOC_MIN 0
416 #define BFIN_RELOC_MAX 0x21
417 #define BFIN_GNUEXT_RELOC_MIN 0x40
418 #define BFIN_GNUEXT_RELOC_MAX 0x43
419 #define BFIN_ARELOC_MIN 0xE0
420 #define BFIN_ARELOC_MAX 0xF3
422 static reloc_howto_type bfin_howto_table
[] =
424 /* This reloc does nothing. . */
425 HOWTO (R_BFIN_UNUSED0
, /* type. */
427 2, /* size (0 = byte, 1 = short, 2 = long). */
429 FALSE
, /* pc_relative. */
431 complain_overflow_bitfield
, /* complain_on_overflow. */
432 bfd_elf_generic_reloc
, /* special_function. */
433 "R_BFIN_UNUSED0", /* name. */
434 FALSE
, /* partial_inplace. */
437 FALSE
), /* pcrel_offset. */
439 HOWTO (R_BFIN_PCREL5M2
, /* type. */
441 1, /* size (0 = byte, 1 = short, 2 = long).. */
443 TRUE
, /* pc_relative. */
445 complain_overflow_unsigned
, /* complain_on_overflow. */
446 bfin_bfd_reloc
, /* special_function. */
447 "R_BFIN_PCREL5M2", /* name. */
448 FALSE
, /* partial_inplace. */
450 0x0000000F, /* dst_mask. */
451 FALSE
), /* pcrel_offset. */
453 HOWTO (R_BFIN_UNUSED1
, /* type. */
455 2, /* size (0 = byte, 1 = short, 2 = long). */
457 FALSE
, /* pc_relative. */
459 complain_overflow_bitfield
, /* complain_on_overflow. */
460 bfd_elf_generic_reloc
, /* special_function. */
461 "R_BFIN_UNUSED1", /* name. */
462 FALSE
, /* partial_inplace. */
465 FALSE
), /* pcrel_offset. */
467 HOWTO (R_BFIN_PCREL10
, /* type. */
469 1, /* size (0 = byte, 1 = short, 2 = long). */
471 TRUE
, /* pc_relative. */
473 complain_overflow_signed
, /* complain_on_overflow. */
474 bfin_bfd_reloc
, /* special_function. */
475 "R_BFIN_PCREL10", /* name. */
476 FALSE
, /* partial_inplace. */
478 0x000003FF, /* dst_mask. */
479 TRUE
), /* pcrel_offset. */
481 HOWTO (R_BFIN_PCREL12_JUMP
, /* type. */
483 /* the offset is actually 13 bit
484 aligned on a word boundary so
485 only 12 bits have to be used.
486 Right shift the rightmost bit.. */
487 1, /* size (0 = byte, 1 = short, 2 = long). */
489 TRUE
, /* pc_relative. */
491 complain_overflow_signed
, /* complain_on_overflow. */
492 bfin_bfd_reloc
, /* special_function. */
493 "R_BFIN_PCREL12_JUMP", /* name. */
494 FALSE
, /* partial_inplace. */
496 0x0FFF, /* dst_mask. */
497 TRUE
), /* pcrel_offset. */
499 HOWTO (R_BFIN_RIMM16
, /* type. */
501 1, /* size (0 = byte, 1 = short, 2 = long). */
503 FALSE
, /* pc_relative. */
505 complain_overflow_signed
, /* complain_on_overflow. */
506 bfin_imm16_reloc
, /* special_function. */
507 "R_BFIN_RIMM16", /* name. */
508 FALSE
, /* partial_inplace. */
510 0x0000FFFF, /* dst_mask. */
511 TRUE
), /* pcrel_offset. */
513 HOWTO (R_BFIN_LUIMM16
, /* type. */
515 1, /* size (0 = byte, 1 = short, 2 = long). */
517 FALSE
, /* pc_relative. */
519 complain_overflow_dont
, /* complain_on_overflow. */
520 bfin_imm16_reloc
, /* special_function. */
521 "R_BFIN_LUIMM16", /* name. */
522 FALSE
, /* partial_inplace. */
524 0x0000FFFF, /* dst_mask. */
525 TRUE
), /* pcrel_offset. */
527 HOWTO (R_BFIN_HUIMM16
, /* type. */
528 16, /* rightshift. */
529 1, /* size (0 = byte, 1 = short, 2 = long). */
531 FALSE
, /* pc_relative. */
533 complain_overflow_unsigned
, /* complain_on_overflow. */
534 bfin_imm16_reloc
, /* special_function. */
535 "R_BFIN_HUIMM16", /* name. */
536 FALSE
, /* partial_inplace. */
538 0x0000FFFF, /* dst_mask. */
539 TRUE
), /* pcrel_offset. */
541 HOWTO (R_BFIN_PCREL12_JUMP_S
, /* type. */
543 1, /* size (0 = byte, 1 = short, 2 = long). */
545 TRUE
, /* pc_relative. */
547 complain_overflow_signed
, /* complain_on_overflow. */
548 bfin_bfd_reloc
, /* special_function. */
549 "R_BFIN_PCREL12_JUMP_S", /* name. */
550 FALSE
, /* partial_inplace. */
552 0x00000FFF, /* dst_mask. */
553 TRUE
), /* pcrel_offset. */
555 HOWTO (R_BFIN_PCREL24_JUMP_X
, /* type. */
557 2, /* size (0 = byte, 1 = short, 2 = long). */
559 TRUE
, /* pc_relative. */
561 complain_overflow_signed
, /* complain_on_overflow. */
562 bfin_pcrel24_reloc
, /* special_function. */
563 "R_BFIN_PCREL24_JUMP_X", /* name. */
564 FALSE
, /* partial_inplace. */
566 0x00FFFFFF, /* dst_mask. */
567 TRUE
), /* pcrel_offset. */
569 HOWTO (R_BFIN_PCREL24
, /* type. */
571 2, /* size (0 = byte, 1 = short, 2 = long). */
573 TRUE
, /* pc_relative. */
575 complain_overflow_signed
, /* complain_on_overflow. */
576 bfin_pcrel24_reloc
, /* special_function. */
577 "R_BFIN_PCREL24", /* name. */
578 FALSE
, /* partial_inplace. */
580 0x00FFFFFF, /* dst_mask. */
581 TRUE
), /* pcrel_offset. */
583 HOWTO (R_BFIN_UNUSEDB
, /* type. */
585 2, /* size (0 = byte, 1 = short, 2 = long). */
587 FALSE
, /* pc_relative. */
589 complain_overflow_dont
, /* complain_on_overflow. */
590 bfd_elf_generic_reloc
, /* special_function. */
591 "R_BFIN_UNUSEDB", /* name. */
592 FALSE
, /* partial_inplace. */
595 FALSE
), /* pcrel_offset. */
597 HOWTO (R_BFIN_UNUSEDC
, /* type. */
599 2, /* size (0 = byte, 1 = short, 2 = long). */
601 FALSE
, /* pc_relative. */
603 complain_overflow_dont
, /* complain_on_overflow. */
604 bfd_elf_generic_reloc
, /* special_function. */
605 "R_BFIN_UNUSEDC", /* name. */
606 FALSE
, /* partial_inplace. */
609 FALSE
), /* pcrel_offset. */
611 HOWTO (R_BFIN_PCREL24_JUMP_L
, /* type. */
613 2, /* size (0 = byte, 1 = short, 2 = long). */
615 TRUE
, /* pc_relative. */
617 complain_overflow_signed
, /* complain_on_overflow. */
618 bfin_pcrel24_reloc
, /* special_function. */
619 "R_BFIN_PCREL24_JUMP_L", /* name. */
620 FALSE
, /* partial_inplace. */
622 0x00FFFFFF, /* dst_mask. */
623 TRUE
), /* pcrel_offset. */
625 HOWTO (R_BFIN_PCREL24_CALL_X
, /* type. */
627 2, /* size (0 = byte, 1 = short, 2 = long). */
629 TRUE
, /* pc_relative. */
631 complain_overflow_signed
, /* complain_on_overflow. */
632 bfin_pcrel24_reloc
, /* special_function. */
633 "R_BFIN_PCREL24_CALL_X", /* name. */
634 FALSE
, /* partial_inplace. */
636 0x00FFFFFF, /* dst_mask. */
637 TRUE
), /* pcrel_offset. */
639 HOWTO (R_BFIN_VAR_EQ_SYMB
, /* type. */
641 2, /* size (0 = byte, 1 = short, 2 = long). */
643 FALSE
, /* pc_relative. */
645 complain_overflow_bitfield
, /* complain_on_overflow. */
646 bfin_bfd_reloc
, /* special_function. */
647 "R_BFIN_VAR_EQ_SYMB", /* name. */
648 FALSE
, /* partial_inplace. */
651 FALSE
), /* pcrel_offset. */
653 HOWTO (R_BFIN_BYTE_DATA
, /* type. */
655 0, /* size (0 = byte, 1 = short, 2 = long). */
657 FALSE
, /* pc_relative. */
659 complain_overflow_unsigned
, /* complain_on_overflow. */
660 bfin_bfd_reloc
, /* special_function. */
661 "R_BFIN_BYTE_DATA", /* name. */
662 FALSE
, /* partial_inplace. */
664 0xFF, /* dst_mask. */
665 TRUE
), /* pcrel_offset. */
667 HOWTO (R_BFIN_BYTE2_DATA
, /* type. */
669 1, /* size (0 = byte, 1 = short, 2 = long). */
671 FALSE
, /* pc_relative. */
673 complain_overflow_signed
, /* complain_on_overflow. */
674 bfin_bfd_reloc
, /* special_function. */
675 "R_BFIN_BYTE2_DATA", /* name. */
676 FALSE
, /* partial_inplace. */
678 0xFFFF, /* dst_mask. */
679 TRUE
), /* pcrel_offset. */
681 HOWTO (R_BFIN_BYTE4_DATA
, /* type. */
683 2, /* size (0 = byte, 1 = short, 2 = long). */
685 FALSE
, /* pc_relative. */
687 complain_overflow_unsigned
, /* complain_on_overflow. */
688 bfin_byte4_reloc
, /* special_function. */
689 "R_BFIN_BYTE4_DATA", /* name. */
690 FALSE
, /* partial_inplace. */
692 0xFFFFFFFF, /* dst_mask. */
693 TRUE
), /* pcrel_offset. */
695 HOWTO (R_BFIN_PCREL11
, /* type. */
697 1, /* size (0 = byte, 1 = short, 2 = long). */
699 TRUE
, /* pc_relative. */
701 complain_overflow_unsigned
, /* complain_on_overflow. */
702 bfin_bfd_reloc
, /* special_function. */
703 "R_BFIN_PCREL11", /* name. */
704 FALSE
, /* partial_inplace. */
706 0x000003FF, /* dst_mask. */
707 FALSE
), /* pcrel_offset. */
710 /* A 18-bit signed operand with the GOT offset for the address of
712 HOWTO (R_BFIN_GOT17M4
, /* type */
714 1, /* size (0 = byte, 1 = short, 2 = long) */
716 FALSE
, /* pc_relative */
718 complain_overflow_signed
, /* complain_on_overflow */
719 bfd_elf_generic_reloc
, /* special_function */
720 "R_BFIN_GOT17M4", /* name */
721 FALSE
, /* partial_inplace */
722 0xffff, /* src_mask */
723 0xffff, /* dst_mask */
724 FALSE
), /* pcrel_offset */
726 /* The upper 16 bits of the GOT offset for the address of the
728 HOWTO (R_BFIN_GOTHI
, /* type */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
732 FALSE
, /* pc_relative */
734 complain_overflow_dont
, /* complain_on_overflow */
735 bfd_elf_generic_reloc
, /* special_function */
736 "R_BFIN_GOTHI", /* name */
737 FALSE
, /* partial_inplace */
738 0xffff, /* src_mask */
739 0xffff, /* dst_mask */
740 FALSE
), /* pcrel_offset */
742 /* The lower 16 bits of the GOT offset for the address of the
744 HOWTO (R_BFIN_GOTLO
, /* type */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
748 FALSE
, /* pc_relative */
750 complain_overflow_dont
, /* complain_on_overflow */
751 bfd_elf_generic_reloc
, /* special_function */
752 "R_BFIN_GOTLO", /* name */
753 FALSE
, /* partial_inplace */
754 0xffff, /* src_mask */
755 0xffff, /* dst_mask */
756 FALSE
), /* pcrel_offset */
758 /* The 32-bit address of the canonical descriptor of a function. */
759 HOWTO (R_BFIN_FUNCDESC
, /* type */
761 2, /* size (0 = byte, 1 = short, 2 = long) */
763 FALSE
, /* pc_relative */
765 complain_overflow_bitfield
, /* complain_on_overflow */
766 bfd_elf_generic_reloc
, /* special_function */
767 "R_BFIN_FUNCDESC", /* name */
768 FALSE
, /* partial_inplace */
769 0xffffffff, /* src_mask */
770 0xffffffff, /* dst_mask */
771 FALSE
), /* pcrel_offset */
773 /* A 12-bit signed operand with the GOT offset for the address of
774 canonical descriptor of a function. */
775 HOWTO (R_BFIN_FUNCDESC_GOT17M4
, /* type */
777 1, /* size (0 = byte, 1 = short, 2 = long) */
779 FALSE
, /* pc_relative */
781 complain_overflow_signed
, /* complain_on_overflow */
782 bfd_elf_generic_reloc
, /* special_function */
783 "R_BFIN_FUNCDESC_GOT17M4", /* name */
784 FALSE
, /* partial_inplace */
785 0xffff, /* src_mask */
786 0xffff, /* dst_mask */
787 FALSE
), /* pcrel_offset */
789 /* The upper 16 bits of the GOT offset for the address of the
790 canonical descriptor of a function. */
791 HOWTO (R_BFIN_FUNCDESC_GOTHI
, /* type */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE
, /* pc_relative */
797 complain_overflow_dont
, /* complain_on_overflow */
798 bfd_elf_generic_reloc
, /* special_function */
799 "R_BFIN_FUNCDESC_GOTHI", /* name */
800 FALSE
, /* partial_inplace */
801 0xffff, /* src_mask */
802 0xffff, /* dst_mask */
803 FALSE
), /* pcrel_offset */
805 /* The lower 16 bits of the GOT offset for the address of the
806 canonical descriptor of a function. */
807 HOWTO (R_BFIN_FUNCDESC_GOTLO
, /* type */
809 1, /* size (0 = byte, 1 = short, 2 = long) */
811 FALSE
, /* pc_relative */
813 complain_overflow_dont
, /* complain_on_overflow */
814 bfd_elf_generic_reloc
, /* special_function */
815 "R_BFIN_FUNCDESC_GOTLO", /* name */
816 FALSE
, /* partial_inplace */
817 0xffff, /* src_mask */
818 0xffff, /* dst_mask */
819 FALSE
), /* pcrel_offset */
821 /* The 32-bit address of the canonical descriptor of a function. */
822 HOWTO (R_BFIN_FUNCDESC_VALUE
, /* type */
824 2, /* size (0 = byte, 1 = short, 2 = long) */
826 FALSE
, /* pc_relative */
828 complain_overflow_bitfield
, /* complain_on_overflow */
829 bfd_elf_generic_reloc
, /* special_function */
830 "R_BFIN_FUNCDESC_VALUE", /* name */
831 FALSE
, /* partial_inplace */
832 0xffffffff, /* src_mask */
833 0xffffffff, /* dst_mask */
834 FALSE
), /* pcrel_offset */
836 /* A 12-bit signed operand with the GOT offset for the address of
837 canonical descriptor of a function. */
838 HOWTO (R_BFIN_FUNCDESC_GOTOFF17M4
, /* type */
840 1, /* size (0 = byte, 1 = short, 2 = long) */
842 FALSE
, /* pc_relative */
844 complain_overflow_signed
, /* complain_on_overflow */
845 bfd_elf_generic_reloc
, /* special_function */
846 "R_BFIN_FUNCDESC_GOTOFF17M4", /* name */
847 FALSE
, /* partial_inplace */
848 0xffff, /* src_mask */
849 0xffff, /* dst_mask */
850 FALSE
), /* pcrel_offset */
852 /* The upper 16 bits of the GOT offset for the address of the
853 canonical descriptor of a function. */
854 HOWTO (R_BFIN_FUNCDESC_GOTOFFHI
, /* type */
856 1, /* size (0 = byte, 1 = short, 2 = long) */
858 FALSE
, /* pc_relative */
860 complain_overflow_dont
, /* complain_on_overflow */
861 bfd_elf_generic_reloc
, /* special_function */
862 "R_BFIN_FUNCDESC_GOTOFFHI", /* name */
863 FALSE
, /* partial_inplace */
864 0xffff, /* src_mask */
865 0xffff, /* dst_mask */
866 FALSE
), /* pcrel_offset */
868 /* The lower 16 bits of the GOT offset for the address of the
869 canonical descriptor of a function. */
870 HOWTO (R_BFIN_FUNCDESC_GOTOFFLO
, /* type */
872 1, /* size (0 = byte, 1 = short, 2 = long) */
874 FALSE
, /* pc_relative */
876 complain_overflow_dont
, /* complain_on_overflow */
877 bfd_elf_generic_reloc
, /* special_function */
878 "R_BFIN_FUNCDESC_GOTOFFLO", /* name */
879 FALSE
, /* partial_inplace */
880 0xffff, /* src_mask */
881 0xffff, /* dst_mask */
882 FALSE
), /* pcrel_offset */
884 /* A 12-bit signed operand with the GOT offset for the address of
886 HOWTO (R_BFIN_GOTOFF17M4
, /* type */
888 1, /* size (0 = byte, 1 = short, 2 = long) */
890 FALSE
, /* pc_relative */
892 complain_overflow_signed
, /* complain_on_overflow */
893 bfd_elf_generic_reloc
, /* special_function */
894 "R_BFIN_GOTOFF17M4", /* name */
895 FALSE
, /* partial_inplace */
896 0xffff, /* src_mask */
897 0xffff, /* dst_mask */
898 FALSE
), /* pcrel_offset */
900 /* The upper 16 bits of the GOT offset for the address of the
902 HOWTO (R_BFIN_GOTOFFHI
, /* type */
904 1, /* size (0 = byte, 1 = short, 2 = long) */
906 FALSE
, /* pc_relative */
908 complain_overflow_dont
, /* complain_on_overflow */
909 bfd_elf_generic_reloc
, /* special_function */
910 "R_BFIN_GOTOFFHI", /* name */
911 FALSE
, /* partial_inplace */
912 0xffff, /* src_mask */
913 0xffff, /* dst_mask */
914 FALSE
), /* pcrel_offset */
916 /* The lower 16 bits of the GOT offset for the address of the
918 HOWTO (R_BFIN_GOTOFFLO
, /* type */
920 1, /* size (0 = byte, 1 = short, 2 = long) */
922 FALSE
, /* pc_relative */
924 complain_overflow_dont
, /* complain_on_overflow */
925 bfd_elf_generic_reloc
, /* special_function */
926 "R_BFIN_GOTOFFLO", /* name */
927 FALSE
, /* partial_inplace */
928 0xffff, /* src_mask */
929 0xffff, /* dst_mask */
930 FALSE
), /* pcrel_offset */
933 static reloc_howto_type bfin_gnuext_howto_table
[] =
935 HOWTO (R_BFIN_PLTPC
, /* type. */
937 1, /* size (0 = byte, 1 = short, 2 = long). */
939 FALSE
, /* pc_relative. */
941 complain_overflow_bitfield
, /* complain_on_overflow. */
942 bfin_pltpc_reloc
, /* special_function. */
943 "R_BFIN_PLTPC", /* name. */
944 FALSE
, /* partial_inplace. */
945 0xffff, /* src_mask. */
946 0xffff, /* dst_mask. */
947 FALSE
), /* pcrel_offset. */
949 HOWTO (R_BFIN_GOT
, /* type. */
951 1, /* size (0 = byte, 1 = short, 2 = long). */
953 FALSE
, /* pc_relative. */
955 complain_overflow_bitfield
, /* complain_on_overflow. */
956 bfd_elf_generic_reloc
, /* special_function. */
957 "R_BFIN_GOT", /* name. */
958 FALSE
, /* partial_inplace. */
959 0x7fff, /* src_mask. */
960 0x7fff, /* dst_mask. */
961 FALSE
), /* pcrel_offset. */
963 /* GNU extension to record C++ vtable hierarchy. */
964 HOWTO (R_BFIN_GNU_VTINHERIT
, /* type. */
966 2, /* size (0 = byte, 1 = short, 2 = long). */
968 FALSE
, /* pc_relative. */
970 complain_overflow_dont
, /* complain_on_overflow. */
971 NULL
, /* special_function. */
972 "R_BFIN_GNU_VTINHERIT", /* name. */
973 FALSE
, /* partial_inplace. */
976 FALSE
), /* pcrel_offset. */
978 /* GNU extension to record C++ vtable member usage. */
979 HOWTO (R_BFIN_GNU_VTENTRY
, /* type. */
981 2, /* size (0 = byte, 1 = short, 2 = long). */
983 FALSE
, /* pc_relative. */
985 complain_overflow_dont
, /* complain_on_overflow. */
986 _bfd_elf_rel_vtable_reloc_fn
, /* special_function. */
987 "R_BFIN_GNU_VTENTRY", /* name. */
988 FALSE
, /* partial_inplace. */
991 FALSE
) /* pcrel_offset. */
994 struct bfin_reloc_map
996 bfd_reloc_code_real_type bfd_reloc_val
;
997 unsigned int bfin_reloc_val
;
1000 static const struct bfin_reloc_map bfin_reloc_map
[] =
1002 { BFD_RELOC_NONE
, R_BFIN_UNUSED0
},
1003 { BFD_RELOC_BFIN_5_PCREL
, R_BFIN_PCREL5M2
},
1004 { BFD_RELOC_NONE
, R_BFIN_UNUSED1
},
1005 { BFD_RELOC_BFIN_10_PCREL
, R_BFIN_PCREL10
},
1006 { BFD_RELOC_BFIN_12_PCREL_JUMP
, R_BFIN_PCREL12_JUMP
},
1007 { BFD_RELOC_BFIN_16_IMM
, R_BFIN_RIMM16
},
1008 { BFD_RELOC_BFIN_16_LOW
, R_BFIN_LUIMM16
},
1009 { BFD_RELOC_BFIN_16_HIGH
, R_BFIN_HUIMM16
},
1010 { BFD_RELOC_BFIN_12_PCREL_JUMP_S
, R_BFIN_PCREL12_JUMP_S
},
1011 { BFD_RELOC_24_PCREL
, R_BFIN_PCREL24
},
1012 { BFD_RELOC_24_PCREL
, R_BFIN_PCREL24
},
1013 { BFD_RELOC_BFIN_24_PCREL_JUMP_L
, R_BFIN_PCREL24_JUMP_L
},
1014 { BFD_RELOC_NONE
, R_BFIN_UNUSEDB
},
1015 { BFD_RELOC_NONE
, R_BFIN_UNUSEDC
},
1016 { BFD_RELOC_BFIN_24_PCREL_CALL_X
, R_BFIN_PCREL24_CALL_X
},
1017 { BFD_RELOC_8
, R_BFIN_BYTE_DATA
},
1018 { BFD_RELOC_16
, R_BFIN_BYTE2_DATA
},
1019 { BFD_RELOC_32
, R_BFIN_BYTE4_DATA
},
1020 { BFD_RELOC_BFIN_11_PCREL
, R_BFIN_PCREL11
},
1021 { BFD_RELOC_BFIN_GOT
, R_BFIN_GOT
},
1022 { BFD_RELOC_BFIN_PLTPC
, R_BFIN_PLTPC
},
1024 { BFD_RELOC_BFIN_GOT17M4
, R_BFIN_GOT17M4
},
1025 { BFD_RELOC_BFIN_GOTHI
, R_BFIN_GOTHI
},
1026 { BFD_RELOC_BFIN_GOTLO
, R_BFIN_GOTLO
},
1027 { BFD_RELOC_BFIN_FUNCDESC
, R_BFIN_FUNCDESC
},
1028 { BFD_RELOC_BFIN_FUNCDESC_GOT17M4
, R_BFIN_FUNCDESC_GOT17M4
},
1029 { BFD_RELOC_BFIN_FUNCDESC_GOTHI
, R_BFIN_FUNCDESC_GOTHI
},
1030 { BFD_RELOC_BFIN_FUNCDESC_GOTLO
, R_BFIN_FUNCDESC_GOTLO
},
1031 { BFD_RELOC_BFIN_FUNCDESC_VALUE
, R_BFIN_FUNCDESC_VALUE
},
1032 { BFD_RELOC_BFIN_FUNCDESC_GOTOFF17M4
, R_BFIN_FUNCDESC_GOTOFF17M4
},
1033 { BFD_RELOC_BFIN_FUNCDESC_GOTOFFHI
, R_BFIN_FUNCDESC_GOTOFFHI
},
1034 { BFD_RELOC_BFIN_FUNCDESC_GOTOFFLO
, R_BFIN_FUNCDESC_GOTOFFLO
},
1035 { BFD_RELOC_BFIN_GOTOFF17M4
, R_BFIN_GOTOFF17M4
},
1036 { BFD_RELOC_BFIN_GOTOFFHI
, R_BFIN_GOTOFFHI
},
1037 { BFD_RELOC_BFIN_GOTOFFLO
, R_BFIN_GOTOFFLO
},
1039 { BFD_RELOC_VTABLE_INHERIT
, R_BFIN_GNU_VTINHERIT
},
1040 { BFD_RELOC_VTABLE_ENTRY
, R_BFIN_GNU_VTENTRY
},
1045 bfin_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
1047 Elf_Internal_Rela
*dst
)
1049 unsigned int r_type
;
1051 r_type
= ELF32_R_TYPE (dst
->r_info
);
1053 if (r_type
<= BFIN_RELOC_MAX
)
1054 cache_ptr
->howto
= &bfin_howto_table
[r_type
];
1056 else if (r_type
>= BFIN_GNUEXT_RELOC_MIN
&& r_type
<= BFIN_GNUEXT_RELOC_MAX
)
1057 cache_ptr
->howto
= &bfin_gnuext_howto_table
[r_type
- BFIN_GNUEXT_RELOC_MIN
];
1060 cache_ptr
->howto
= (reloc_howto_type
*) NULL
;
1063 /* Given a BFD reloc type, return the howto. */
1064 static reloc_howto_type
*
1065 bfin_bfd_reloc_type_lookup (bfd
* abfd ATTRIBUTE_UNUSED
,
1066 bfd_reloc_code_real_type code
)
1069 unsigned int r_type
= BFIN_RELOC_MIN
;
1071 for (i
= sizeof (bfin_reloc_map
) / sizeof (bfin_reloc_map
[0]); --i
;)
1072 if (bfin_reloc_map
[i
].bfd_reloc_val
== code
)
1073 r_type
= bfin_reloc_map
[i
].bfin_reloc_val
;
1075 if (r_type
<= BFIN_RELOC_MAX
&& r_type
> BFIN_RELOC_MIN
)
1076 return &bfin_howto_table
[r_type
];
1078 else if (r_type
>= BFIN_GNUEXT_RELOC_MIN
&& r_type
<= BFIN_GNUEXT_RELOC_MAX
)
1079 return &bfin_gnuext_howto_table
[r_type
- BFIN_GNUEXT_RELOC_MIN
];
1081 return (reloc_howto_type
*) NULL
;
1084 static reloc_howto_type
*
1085 bfin_bfd_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1091 i
< (sizeof (bfin_howto_table
)
1092 / sizeof (bfin_howto_table
[0]));
1094 if (bfin_howto_table
[i
].name
!= NULL
1095 && strcasecmp (bfin_howto_table
[i
].name
, r_name
) == 0)
1096 return &bfin_howto_table
[i
];
1099 i
< (sizeof (bfin_gnuext_howto_table
)
1100 / sizeof (bfin_gnuext_howto_table
[0]));
1102 if (bfin_gnuext_howto_table
[i
].name
!= NULL
1103 && strcasecmp (bfin_gnuext_howto_table
[i
].name
, r_name
) == 0)
1104 return &bfin_gnuext_howto_table
[i
];
1109 /* Given a bfin relocation type, return the howto. */
1110 static reloc_howto_type
*
1111 bfin_reloc_type_lookup (bfd
* abfd ATTRIBUTE_UNUSED
,
1112 unsigned int r_type
)
1114 if (r_type
<= BFIN_RELOC_MAX
)
1115 return &bfin_howto_table
[r_type
];
1117 else if (r_type
>= BFIN_GNUEXT_RELOC_MIN
&& r_type
<= BFIN_GNUEXT_RELOC_MAX
)
1118 return &bfin_gnuext_howto_table
[r_type
- BFIN_GNUEXT_RELOC_MIN
];
1120 return (reloc_howto_type
*) NULL
;
1123 /* Set by ld emulation if --code-in-l1. */
1124 bfd_boolean elf32_bfin_code_in_l1
= 0;
1126 /* Set by ld emulation if --data-in-l1. */
1127 bfd_boolean elf32_bfin_data_in_l1
= 0;
1130 elf32_bfin_final_write_processing (bfd
*abfd
,
1131 bfd_boolean linker ATTRIBUTE_UNUSED
)
1133 if (elf32_bfin_code_in_l1
)
1134 elf_elfheader (abfd
)->e_flags
|= EF_BFIN_CODE_IN_L1
;
1135 if (elf32_bfin_data_in_l1
)
1136 elf_elfheader (abfd
)->e_flags
|= EF_BFIN_DATA_IN_L1
;
1139 /* Return TRUE if the name is a local label.
1140 bfin local labels begin with L$. */
1142 bfin_is_local_label_name (bfd
*abfd
, const char *label
)
1144 if (label
[0] == 'L' && label
[1] == '$' )
1147 return _bfd_elf_is_local_label_name (abfd
, label
);
1150 /* Look through the relocs for a section during the first phase, and
1151 allocate space in the global offset table or procedure linkage
1155 bfin_check_relocs (bfd
* abfd
,
1156 struct bfd_link_info
*info
,
1158 const Elf_Internal_Rela
*relocs
)
1161 Elf_Internal_Shdr
*symtab_hdr
;
1162 struct elf_link_hash_entry
**sym_hashes
;
1163 bfd_signed_vma
*local_got_refcounts
;
1164 const Elf_Internal_Rela
*rel
;
1165 const Elf_Internal_Rela
*rel_end
;
1169 if (info
->relocatable
)
1172 dynobj
= elf_hash_table (info
)->dynobj
;
1173 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1174 sym_hashes
= elf_sym_hashes (abfd
);
1175 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1180 rel_end
= relocs
+ sec
->reloc_count
;
1181 for (rel
= relocs
; rel
< rel_end
; rel
++)
1183 unsigned long r_symndx
;
1184 struct elf_link_hash_entry
*h
;
1186 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1187 if (r_symndx
< symtab_hdr
->sh_info
)
1190 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1192 switch (ELF32_R_TYPE (rel
->r_info
))
1194 /* This relocation describes the C++ object vtable hierarchy.
1195 Reconstruct it for later use during GC. */
1196 case R_BFIN_GNU_VTINHERIT
:
1197 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1201 /* This relocation describes which C++ vtable entries
1202 are actually used. Record for later use during GC. */
1203 case R_BFIN_GNU_VTENTRY
:
1204 BFD_ASSERT (h
!= NULL
);
1206 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1212 && strcmp (h
->root
.root
.string
, "__GLOBAL_OFFSET_TABLE_") == 0)
1218 /* Create the .got section. */
1219 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
1220 if (!_bfd_elf_create_got_section (dynobj
, info
))
1226 sgot
= bfd_get_linker_section (dynobj
, ".got");
1227 BFD_ASSERT (sgot
!= NULL
);
1230 if (srelgot
== NULL
&& (h
!= NULL
|| info
->shared
))
1232 srelgot
= bfd_get_linker_section (dynobj
, ".rela.got");
1233 if (srelgot
== NULL
)
1235 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
1236 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
1238 srelgot
= bfd_make_section_anyway_with_flags (dynobj
,
1242 || !bfd_set_section_alignment (dynobj
, srelgot
, 2))
1249 if (h
->got
.refcount
== 0)
1251 /* Make sure this symbol is output as a dynamic symbol. */
1252 if (h
->dynindx
== -1 && !h
->forced_local
)
1254 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
1258 /* Allocate space in the .got section. */
1260 /* Allocate relocation space. */
1261 srelgot
->size
+= sizeof (Elf32_External_Rela
);
1267 /* This is a global offset table entry for a local symbol. */
1268 if (local_got_refcounts
== NULL
)
1272 size
= symtab_hdr
->sh_info
;
1273 size
*= sizeof (bfd_signed_vma
);
1274 local_got_refcounts
= ((bfd_signed_vma
*)
1275 bfd_zalloc (abfd
, size
));
1276 if (local_got_refcounts
== NULL
)
1278 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1280 if (local_got_refcounts
[r_symndx
] == 0)
1285 /* If we are generating a shared object, we need to
1286 output a R_68K_RELATIVE reloc so that the dynamic
1287 linker can adjust this GOT entry. */
1288 srelgot
->size
+= sizeof (Elf32_External_Rela
);
1291 local_got_refcounts
[r_symndx
]++;
1303 static enum elf_reloc_type_class
1304 elf32_bfin_reloc_type_class (const Elf_Internal_Rela
* rela
)
1306 switch ((int) ELF32_R_TYPE (rela
->r_info
))
1309 return reloc_class_normal
;
1313 static bfd_reloc_status_type
1314 bfin_final_link_relocate (Elf_Internal_Rela
*rel
, reloc_howto_type
*howto
,
1315 bfd
*input_bfd
, asection
*input_section
,
1316 bfd_byte
*contents
, bfd_vma address
,
1317 bfd_vma value
, bfd_vma addend
)
1319 int r_type
= ELF32_R_TYPE (rel
->r_info
);
1321 if (r_type
== R_BFIN_PCREL24
|| r_type
== R_BFIN_PCREL24_JUMP_L
)
1323 bfd_reloc_status_type r
= bfd_reloc_ok
;
1326 if (address
> bfd_get_section_limit (input_bfd
, input_section
))
1327 return bfd_reloc_outofrange
;
1331 /* Perform usual pc-relative correction. */
1332 value
-= input_section
->output_section
->vma
+ input_section
->output_offset
;
1335 /* We are getting reloc_entry->address 2 byte off from
1336 the start of instruction. Assuming absolute postion
1337 of the reloc data. But, following code had been written assuming
1338 reloc address is starting at begining of instruction.
1339 To compensate that I have increased the value of
1340 relocation by 1 (effectively 2) and used the addr -2 instead of addr. */
1345 if ((value
& 0xFF000000) != 0
1346 && (value
& 0xFF000000) != 0xFF000000)
1347 r
= bfd_reloc_overflow
;
1351 x
= bfd_get_16 (input_bfd
, contents
+ address
);
1352 x
= (x
& 0xff00) | ((value
>> 16) & 0xff);
1353 bfd_put_16 (input_bfd
, x
, contents
+ address
);
1355 x
= bfd_get_16 (input_bfd
, contents
+ address
+ 2);
1357 bfd_put_16 (input_bfd
, x
, contents
+ address
+ 2);
1361 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
1362 rel
->r_offset
, value
, addend
);
1367 bfin_relocate_section (bfd
* output_bfd
,
1368 struct bfd_link_info
*info
,
1370 asection
* input_section
,
1371 bfd_byte
* contents
,
1372 Elf_Internal_Rela
* relocs
,
1373 Elf_Internal_Sym
* local_syms
,
1374 asection
** local_sections
)
1377 Elf_Internal_Shdr
*symtab_hdr
;
1378 struct elf_link_hash_entry
**sym_hashes
;
1379 bfd_vma
*local_got_offsets
;
1381 Elf_Internal_Rela
*rel
;
1382 Elf_Internal_Rela
*relend
;
1385 dynobj
= elf_hash_table (info
)->dynobj
;
1386 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
1387 sym_hashes
= elf_sym_hashes (input_bfd
);
1388 local_got_offsets
= elf_local_got_offsets (input_bfd
);
1393 relend
= relocs
+ input_section
->reloc_count
;
1394 for (; rel
< relend
; rel
++, i
++)
1397 reloc_howto_type
*howto
;
1398 unsigned long r_symndx
;
1399 struct elf_link_hash_entry
*h
;
1400 Elf_Internal_Sym
*sym
;
1402 bfd_vma relocation
= 0;
1403 bfd_boolean unresolved_reloc
;
1404 bfd_reloc_status_type r
;
1407 r_type
= ELF32_R_TYPE (rel
->r_info
);
1408 if (r_type
< 0 || r_type
>= 243)
1410 bfd_set_error (bfd_error_bad_value
);
1414 if (r_type
== R_BFIN_GNU_VTENTRY
1415 || r_type
== R_BFIN_GNU_VTINHERIT
)
1418 howto
= bfin_reloc_type_lookup (input_bfd
, r_type
);
1421 bfd_set_error (bfd_error_bad_value
);
1424 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1429 unresolved_reloc
= FALSE
;
1431 if (r_symndx
< symtab_hdr
->sh_info
)
1433 sym
= local_syms
+ r_symndx
;
1434 sec
= local_sections
[r_symndx
];
1435 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
1441 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
1442 r_symndx
, symtab_hdr
, sym_hashes
,
1444 unresolved_reloc
, warned
);
1447 if (sec
!= NULL
&& discarded_section (sec
))
1448 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
1449 rel
, 1, relend
, howto
, 0, contents
);
1451 if (info
->relocatable
)
1454 address
= rel
->r_offset
;
1456 /* Then, process normally. */
1459 case R_BFIN_GNU_VTINHERIT
:
1460 case R_BFIN_GNU_VTENTRY
:
1461 return bfd_reloc_ok
;
1464 /* Relocation is to the address of the entry for this symbol
1465 in the global offset table. */
1467 && strcmp (h
->root
.root
.string
, "__GLOBAL_OFFSET_TABLE_") == 0)
1470 /* Relocation is the offset of the entry for this symbol in
1471 the global offset table. */
1478 /* Create the .got section. */
1479 elf_hash_table (info
)->dynobj
= dynobj
= output_bfd
;
1480 if (!_bfd_elf_create_got_section (dynobj
, info
))
1486 sgot
= bfd_get_linker_section (dynobj
, ".got");
1487 BFD_ASSERT (sgot
!= NULL
);
1494 off
= h
->got
.offset
;
1495 BFD_ASSERT (off
!= (bfd_vma
) - 1);
1496 dyn
= elf_hash_table (info
)->dynamic_sections_created
;
1498 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
1505 /* This is actually a static link, or it is a
1506 -Bsymbolic link and the symbol is defined
1507 locally, or the symbol was forced to be local
1508 because of a version file.. We must initialize
1509 this entry in the global offset table. Since
1510 the offset must always be a multiple of 4, we
1511 use the least significant bit to record whether
1512 we have initialized it already.
1514 When doing a dynamic link, we create a .rela.got
1515 relocation entry to initialize the value. This
1516 is done in the finish_dynamic_symbol routine. */
1521 bfd_put_32 (output_bfd
, relocation
,
1522 sgot
->contents
+ off
);
1527 unresolved_reloc
= FALSE
;
1531 BFD_ASSERT (local_got_offsets
!= NULL
);
1532 off
= local_got_offsets
[r_symndx
];
1533 BFD_ASSERT (off
!= (bfd_vma
) - 1);
1535 /* The offset must always be a multiple of 4. We use
1536 the least significant bit to record whether we have
1537 already generated the necessary reloc. */
1542 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1547 Elf_Internal_Rela outrel
;
1550 s
= bfd_get_linker_section (dynobj
, ".rela.got");
1551 BFD_ASSERT (s
!= NULL
);
1553 outrel
.r_offset
= (sgot
->output_section
->vma
1554 + sgot
->output_offset
+ off
);
1556 ELF32_R_INFO (0, R_BFIN_PCREL24
);
1557 outrel
.r_addend
= relocation
;
1560 s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1561 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1564 local_got_offsets
[r_symndx
] |= 1;
1568 relocation
= sgot
->output_offset
+ off
;
1570 /* bfin : preg = [preg + 17bitdiv4offset] relocation is div by 4. */
1577 r
= bfin_final_link_relocate (rel
, howto
, input_bfd
, input_section
,
1579 relocation
, rel
->r_addend
);
1584 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
1585 because such sections are not SEC_ALLOC and thus ld.so will
1586 not process them. */
1587 if (unresolved_reloc
1588 && !((input_section
->flags
& SEC_DEBUGGING
) != 0 && h
->def_dynamic
)
1589 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
1590 rel
->r_offset
) != (bfd_vma
) -1)
1592 (*_bfd_error_handler
)
1593 (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"),
1595 input_section
, (long) rel
->r_offset
, h
->root
.root
.string
);
1599 if (r
!= bfd_reloc_ok
)
1604 name
= h
->root
.root
.string
;
1607 name
= bfd_elf_string_from_elf_section (input_bfd
,
1608 symtab_hdr
->sh_link
,
1613 name
= bfd_section_name (input_bfd
, sec
);
1616 if (r
== bfd_reloc_overflow
)
1618 if (!(info
->callbacks
->reloc_overflow
1619 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
1620 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
)))
1625 (*_bfd_error_handler
)
1626 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
1627 input_bfd
, input_section
,
1628 (long) rel
->r_offset
, name
, (int) r
);
1638 bfin_gc_mark_hook (asection
* sec
,
1639 struct bfd_link_info
*info
,
1640 Elf_Internal_Rela
* rel
,
1641 struct elf_link_hash_entry
*h
,
1642 Elf_Internal_Sym
* sym
)
1645 switch (ELF32_R_TYPE (rel
->r_info
))
1647 case R_BFIN_GNU_VTINHERIT
:
1648 case R_BFIN_GNU_VTENTRY
:
1652 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1655 /* Update the got entry reference counts for the section being removed. */
1658 bfin_gc_sweep_hook (bfd
* abfd
,
1659 struct bfd_link_info
*info
,
1661 const Elf_Internal_Rela
* relocs
)
1663 Elf_Internal_Shdr
*symtab_hdr
;
1664 struct elf_link_hash_entry
**sym_hashes
;
1665 bfd_signed_vma
*local_got_refcounts
;
1666 const Elf_Internal_Rela
*rel
, *relend
;
1671 dynobj
= elf_hash_table (info
)->dynobj
;
1675 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1676 sym_hashes
= elf_sym_hashes (abfd
);
1677 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1679 sgot
= bfd_get_linker_section (dynobj
, ".got");
1680 srelgot
= bfd_get_linker_section (dynobj
, ".rela.got");
1682 relend
= relocs
+ sec
->reloc_count
;
1683 for (rel
= relocs
; rel
< relend
; rel
++)
1685 unsigned long r_symndx
;
1686 struct elf_link_hash_entry
*h
;
1688 switch (ELF32_R_TYPE (rel
->r_info
))
1691 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1692 if (r_symndx
>= symtab_hdr
->sh_info
)
1694 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1695 if (h
->got
.refcount
> 0)
1698 if (h
->got
.refcount
== 0)
1700 /* We don't need the .got entry any more. */
1702 srelgot
->size
-= sizeof (Elf32_External_Rela
);
1706 else if (local_got_refcounts
!= NULL
)
1708 if (local_got_refcounts
[r_symndx
] > 0)
1710 --local_got_refcounts
[r_symndx
];
1711 if (local_got_refcounts
[r_symndx
] == 0)
1713 /* We don't need the .got entry any more. */
1716 srelgot
->size
-= sizeof (Elf32_External_Rela
);
1728 extern const bfd_target bfd_elf32_bfinfdpic_vec
;
1729 #define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_bfinfdpic_vec)
1731 /* An extension of the elf hash table data structure,
1732 containing some additional Blackfin-specific data. */
1733 struct bfinfdpic_elf_link_hash_table
1735 struct elf_link_hash_table elf
;
1737 /* A pointer to the .got section. */
1739 /* A pointer to the .rel.got section. */
1741 /* A pointer to the .rofixup section. */
1742 asection
*sgotfixup
;
1743 /* A pointer to the .plt section. */
1745 /* A pointer to the .rel.plt section. */
1747 /* GOT base offset. */
1749 /* Location of the first non-lazy PLT entry, i.e., the number of
1750 bytes taken by lazy PLT entries. */
1752 /* A hash table holding information about which symbols were
1753 referenced with which PIC-related relocations. */
1754 struct htab
*relocs_info
;
1755 /* Summary reloc information collected by
1756 _bfinfdpic_count_got_plt_entries. */
1757 struct _bfinfdpic_dynamic_got_info
*g
;
1760 /* Get the Blackfin ELF linker hash table from a link_info structure. */
1762 #define bfinfdpic_hash_table(info) \
1763 (elf_hash_table_id ((struct elf_link_hash_table *) ((info)->hash)) \
1764 == BFIN_ELF_DATA ? ((struct bfinfdpic_elf_link_hash_table *) ((info)->hash)) : NULL)
1766 #define bfinfdpic_got_section(info) \
1767 (bfinfdpic_hash_table (info)->sgot)
1768 #define bfinfdpic_gotrel_section(info) \
1769 (bfinfdpic_hash_table (info)->sgotrel)
1770 #define bfinfdpic_gotfixup_section(info) \
1771 (bfinfdpic_hash_table (info)->sgotfixup)
1772 #define bfinfdpic_plt_section(info) \
1773 (bfinfdpic_hash_table (info)->splt)
1774 #define bfinfdpic_pltrel_section(info) \
1775 (bfinfdpic_hash_table (info)->spltrel)
1776 #define bfinfdpic_relocs_info(info) \
1777 (bfinfdpic_hash_table (info)->relocs_info)
1778 #define bfinfdpic_got_initial_offset(info) \
1779 (bfinfdpic_hash_table (info)->got0)
1780 #define bfinfdpic_plt_initial_offset(info) \
1781 (bfinfdpic_hash_table (info)->plt0)
1782 #define bfinfdpic_dynamic_got_plt_info(info) \
1783 (bfinfdpic_hash_table (info)->g)
1785 /* The name of the dynamic interpreter. This is put in the .interp
1788 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
1790 #define DEFAULT_STACK_SIZE 0x20000
1792 /* This structure is used to collect the number of entries present in
1793 each addressable range of the got. */
1794 struct _bfinfdpic_dynamic_got_info
1796 /* Several bits of information about the current link. */
1797 struct bfd_link_info
*info
;
1798 /* Total size needed for GOT entries within the 18- or 32-bit
1800 bfd_vma got17m4
, gothilo
;
1801 /* Total size needed for function descriptor entries within the 18-
1802 or 32-bit ranges. */
1803 bfd_vma fd17m4
, fdhilo
;
1804 /* Total size needed function descriptor entries referenced in PLT
1805 entries, that would be profitable to place in offsets close to
1806 the PIC register. */
1808 /* Total size needed by lazy PLT entries. */
1810 /* Number of relocations carried over from input object files. */
1811 unsigned long relocs
;
1812 /* Number of fixups introduced by relocations in input object files. */
1813 unsigned long fixups
;
1816 /* Create a Blackfin ELF linker hash table. */
1818 static struct bfd_link_hash_table
*
1819 bfinfdpic_elf_link_hash_table_create (bfd
*abfd
)
1821 struct bfinfdpic_elf_link_hash_table
*ret
;
1822 bfd_size_type amt
= sizeof (struct bfinfdpic_elf_link_hash_table
);
1824 ret
= bfd_zalloc (abfd
, amt
);
1828 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
1829 _bfd_elf_link_hash_newfunc
,
1830 sizeof (struct elf_link_hash_entry
),
1837 return &ret
->elf
.root
;
1840 /* Decide whether a reference to a symbol can be resolved locally or
1841 not. If the symbol is protected, we want the local address, but
1842 its function descriptor must be assigned by the dynamic linker. */
1843 #define BFINFDPIC_SYM_LOCAL(INFO, H) \
1844 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \
1845 || ! elf_hash_table (INFO)->dynamic_sections_created)
1846 #define BFINFDPIC_FUNCDESC_LOCAL(INFO, H) \
1847 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created)
1849 /* This structure collects information on what kind of GOT, PLT or
1850 function descriptors are required by relocations that reference a
1852 struct bfinfdpic_relocs_info
1854 /* The index of the symbol, as stored in the relocation r_info, if
1855 we have a local symbol; -1 otherwise. */
1859 /* The input bfd in which the symbol is defined, if it's a local
1862 /* If symndx == -1, the hash table entry corresponding to a global
1863 symbol (even if it turns out to bind locally, in which case it
1864 should ideally be replaced with section's symndx + addend). */
1865 struct elf_link_hash_entry
*h
;
1867 /* The addend of the relocation that references the symbol. */
1870 /* The fields above are used to identify an entry. The fields below
1871 contain information on how an entry is used and, later on, which
1872 locations it was assigned. */
1873 /* The following 2 fields record whether the symbol+addend above was
1874 ever referenced with a GOT relocation. The 17M4 suffix indicates a
1875 GOT17M4 relocation; hilo is used for GOTLO/GOTHI pairs. */
1878 /* Whether a FUNCDESC relocation references symbol+addend. */
1880 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */
1883 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */
1884 unsigned fdgoff17m4
;
1885 unsigned fdgoffhilo
;
1886 /* Whether symbol+addend is referenced with GOTOFF17M4, GOTOFFLO or
1887 GOTOFFHI relocations. The addend doesn't really matter, since we
1888 envision that this will only be used to check whether the symbol
1889 is mapped to the same segment as the got. */
1891 /* Whether symbol+addend is referenced by a LABEL24 relocation. */
1893 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE
1896 /* Whether we need a PLT entry for a symbol. Should be implied by
1898 (call && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)) */
1900 /* Whether a function descriptor should be created in this link unit
1901 for symbol+addend. Should be implied by something like:
1902 (plt || fdgotoff17m4 || fdgotofflohi
1903 || ((fd || fdgot17m4 || fdgothilo)
1904 && (symndx != -1 || BFINFDPIC_FUNCDESC_LOCAL (info, d.h)))) */
1906 /* Whether a lazy PLT entry is needed for this symbol+addend.
1907 Should be implied by something like:
1908 (privfd && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)
1909 && ! (info->flags & DF_BIND_NOW)) */
1911 /* Whether we've already emitted GOT relocations and PLT entries as
1912 needed for this symbol. */
1915 /* The number of R_BFIN_BYTE4_DATA, R_BFIN_FUNCDESC and R_BFIN_FUNCDESC_VALUE
1916 relocations referencing the symbol. */
1917 unsigned relocs32
, relocsfd
, relocsfdv
;
1919 /* The number of .rofixups entries and dynamic relocations allocated
1920 for this symbol, minus any that might have already been used. */
1921 unsigned fixups
, dynrelocs
;
1923 /* The offsets of the GOT entries assigned to symbol+addend, to the
1924 function descriptor's address, and to a function descriptor,
1925 respectively. Should be zero if unassigned. The offsets are
1926 counted from the value that will be assigned to the PIC register,
1927 not from the beginning of the .got section. */
1928 bfd_signed_vma got_entry
, fdgot_entry
, fd_entry
;
1929 /* The offsets of the PLT entries assigned to symbol+addend,
1930 non-lazy and lazy, respectively. If unassigned, should be
1932 bfd_vma plt_entry
, lzplt_entry
;
1935 /* Compute a hash with the key fields of an bfinfdpic_relocs_info entry. */
1937 bfinfdpic_relocs_info_hash (const void *entry_
)
1939 const struct bfinfdpic_relocs_info
*entry
= entry_
;
1941 return (entry
->symndx
== -1
1942 ? (long) entry
->d
.h
->root
.root
.hash
1943 : entry
->symndx
+ (long) entry
->d
.abfd
->id
* 257) + entry
->addend
;
1946 /* Test whether the key fields of two bfinfdpic_relocs_info entries are
1949 bfinfdpic_relocs_info_eq (const void *entry1
, const void *entry2
)
1951 const struct bfinfdpic_relocs_info
*e1
= entry1
;
1952 const struct bfinfdpic_relocs_info
*e2
= entry2
;
1954 return e1
->symndx
== e2
->symndx
&& e1
->addend
== e2
->addend
1955 && (e1
->symndx
== -1 ? e1
->d
.h
== e2
->d
.h
: e1
->d
.abfd
== e2
->d
.abfd
);
1958 /* Find or create an entry in a hash table HT that matches the key
1959 fields of the given ENTRY. If it's not found, memory for a new
1960 entry is allocated in ABFD's obstack. */
1961 static struct bfinfdpic_relocs_info
*
1962 bfinfdpic_relocs_info_find (struct htab
*ht
,
1964 const struct bfinfdpic_relocs_info
*entry
,
1965 enum insert_option insert
)
1967 struct bfinfdpic_relocs_info
**loc
;
1972 loc
= (struct bfinfdpic_relocs_info
**) htab_find_slot (ht
, entry
, insert
);
1980 *loc
= bfd_zalloc (abfd
, sizeof (**loc
));
1985 (*loc
)->symndx
= entry
->symndx
;
1986 (*loc
)->d
= entry
->d
;
1987 (*loc
)->addend
= entry
->addend
;
1988 (*loc
)->plt_entry
= (bfd_vma
)-1;
1989 (*loc
)->lzplt_entry
= (bfd_vma
)-1;
1994 /* Obtain the address of the entry in HT associated with H's symbol +
1995 addend, creating a new entry if none existed. ABFD is only used
1996 for memory allocation purposes. */
1997 inline static struct bfinfdpic_relocs_info
*
1998 bfinfdpic_relocs_info_for_global (struct htab
*ht
,
2000 struct elf_link_hash_entry
*h
,
2002 enum insert_option insert
)
2004 struct bfinfdpic_relocs_info entry
;
2008 entry
.addend
= addend
;
2010 return bfinfdpic_relocs_info_find (ht
, abfd
, &entry
, insert
);
2013 /* Obtain the address of the entry in HT associated with the SYMNDXth
2014 local symbol of the input bfd ABFD, plus the addend, creating a new
2015 entry if none existed. */
2016 inline static struct bfinfdpic_relocs_info
*
2017 bfinfdpic_relocs_info_for_local (struct htab
*ht
,
2021 enum insert_option insert
)
2023 struct bfinfdpic_relocs_info entry
;
2025 entry
.symndx
= symndx
;
2026 entry
.d
.abfd
= abfd
;
2027 entry
.addend
= addend
;
2029 return bfinfdpic_relocs_info_find (ht
, abfd
, &entry
, insert
);
2032 /* Merge fields set by check_relocs() of two entries that end up being
2033 mapped to the same (presumably global) symbol. */
2036 bfinfdpic_pic_merge_early_relocs_info (struct bfinfdpic_relocs_info
*e2
,
2037 struct bfinfdpic_relocs_info
const *e1
)
2039 e2
->got17m4
|= e1
->got17m4
;
2040 e2
->gothilo
|= e1
->gothilo
;
2042 e2
->fdgot17m4
|= e1
->fdgot17m4
;
2043 e2
->fdgothilo
|= e1
->fdgothilo
;
2044 e2
->fdgoff17m4
|= e1
->fdgoff17m4
;
2045 e2
->fdgoffhilo
|= e1
->fdgoffhilo
;
2046 e2
->gotoff
|= e1
->gotoff
;
2047 e2
->call
|= e1
->call
;
2051 /* Every block of 65535 lazy PLT entries shares a single call to the
2052 resolver, inserted in the 32768th lazy PLT entry (i.e., entry #
2053 32767, counting from 0). All other lazy PLT entries branch to it
2054 in a single instruction. */
2056 #define LZPLT_RESOLVER_EXTRA 10
2057 #define LZPLT_NORMAL_SIZE 6
2058 #define LZPLT_ENTRIES 1362
2060 #define BFINFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) LZPLT_NORMAL_SIZE * LZPLT_ENTRIES + LZPLT_RESOLVER_EXTRA)
2061 #define BFINFDPIC_LZPLT_RESOLV_LOC (LZPLT_NORMAL_SIZE * LZPLT_ENTRIES / 2)
2063 /* Add a dynamic relocation to the SRELOC section. */
2065 inline static bfd_vma
2066 _bfinfdpic_add_dyn_reloc (bfd
*output_bfd
, asection
*sreloc
, bfd_vma offset
,
2067 int reloc_type
, long dynindx
, bfd_vma addend
,
2068 struct bfinfdpic_relocs_info
*entry
)
2070 Elf_Internal_Rela outrel
;
2071 bfd_vma reloc_offset
;
2073 outrel
.r_offset
= offset
;
2074 outrel
.r_info
= ELF32_R_INFO (dynindx
, reloc_type
);
2075 outrel
.r_addend
= addend
;
2077 reloc_offset
= sreloc
->reloc_count
* sizeof (Elf32_External_Rel
);
2078 BFD_ASSERT (reloc_offset
< sreloc
->size
);
2079 bfd_elf32_swap_reloc_out (output_bfd
, &outrel
,
2080 sreloc
->contents
+ reloc_offset
);
2081 sreloc
->reloc_count
++;
2083 /* If the entry's index is zero, this relocation was probably to a
2084 linkonce section that got discarded. We reserved a dynamic
2085 relocation, but it was for another entry than the one we got at
2086 the time of emitting the relocation. Unfortunately there's no
2087 simple way for us to catch this situation, since the relocation
2088 is cleared right before calling relocate_section, at which point
2089 we no longer know what the relocation used to point to. */
2092 BFD_ASSERT (entry
->dynrelocs
> 0);
2096 return reloc_offset
;
2099 /* Add a fixup to the ROFIXUP section. */
2102 _bfinfdpic_add_rofixup (bfd
*output_bfd
, asection
*rofixup
, bfd_vma offset
,
2103 struct bfinfdpic_relocs_info
*entry
)
2105 bfd_vma fixup_offset
;
2107 if (rofixup
->flags
& SEC_EXCLUDE
)
2110 fixup_offset
= rofixup
->reloc_count
* 4;
2111 if (rofixup
->contents
)
2113 BFD_ASSERT (fixup_offset
< rofixup
->size
);
2114 bfd_put_32 (output_bfd
, offset
, rofixup
->contents
+ fixup_offset
);
2116 rofixup
->reloc_count
++;
2118 if (entry
&& entry
->symndx
)
2120 /* See discussion about symndx == 0 in _bfinfdpic_add_dyn_reloc
2122 BFD_ASSERT (entry
->fixups
> 0);
2126 return fixup_offset
;
2129 /* Find the segment number in which OSEC, and output section, is
2133 _bfinfdpic_osec_to_segment (bfd
*output_bfd
, asection
*osec
)
2135 Elf_Internal_Phdr
*p
= _bfd_elf_find_segment_containing_section (output_bfd
, osec
);
2137 return (p
!= NULL
) ? p
- elf_tdata (output_bfd
)->phdr
: -1;
2140 inline static bfd_boolean
2141 _bfinfdpic_osec_readonly_p (bfd
*output_bfd
, asection
*osec
)
2143 unsigned seg
= _bfinfdpic_osec_to_segment (output_bfd
, osec
);
2145 return ! (elf_tdata (output_bfd
)->phdr
[seg
].p_flags
& PF_W
);
2148 /* Generate relocations for GOT entries, function descriptors, and
2149 code for PLT and lazy PLT entries. */
2151 inline static bfd_boolean
2152 _bfinfdpic_emit_got_relocs_plt_entries (struct bfinfdpic_relocs_info
*entry
,
2154 struct bfd_link_info
*info
,
2156 Elf_Internal_Sym
*sym
,
2159 bfd_vma fd_lazy_rel_offset
= (bfd_vma
) -1;
2166 if (entry
->got_entry
|| entry
->fdgot_entry
|| entry
->fd_entry
)
2168 /* If the symbol is dynamic, consider it for dynamic
2169 relocations, otherwise decay to section + offset. */
2170 if (entry
->symndx
== -1 && entry
->d
.h
->dynindx
!= -1)
2171 dynindx
= entry
->d
.h
->dynindx
;
2175 && sec
->output_section
2176 && ! bfd_is_abs_section (sec
->output_section
)
2177 && ! bfd_is_und_section (sec
->output_section
))
2178 dynindx
= elf_section_data (sec
->output_section
)->dynindx
;
2184 /* Generate relocation for GOT entry pointing to the symbol. */
2185 if (entry
->got_entry
)
2188 bfd_vma ad
= addend
;
2190 /* If the symbol is dynamic but binds locally, use
2192 if (sec
&& (entry
->symndx
!= -1
2193 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2195 if (entry
->symndx
== -1)
2196 ad
+= entry
->d
.h
->root
.u
.def
.value
;
2198 ad
+= sym
->st_value
;
2199 ad
+= sec
->output_offset
;
2200 if (sec
->output_section
&& elf_section_data (sec
->output_section
))
2201 idx
= elf_section_data (sec
->output_section
)->dynindx
;
2206 /* If we're linking an executable at a fixed address, we can
2207 omit the dynamic relocation as long as the symbol is local to
2209 if (info
->executable
&& !info
->pie
2210 && (entry
->symndx
!= -1
2211 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2214 ad
+= sec
->output_section
->vma
;
2215 if (entry
->symndx
!= -1
2216 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
2217 _bfinfdpic_add_rofixup (output_bfd
,
2218 bfinfdpic_gotfixup_section (info
),
2219 bfinfdpic_got_section (info
)->output_section
2221 + bfinfdpic_got_section (info
)->output_offset
2222 + bfinfdpic_got_initial_offset (info
)
2223 + entry
->got_entry
, entry
);
2226 _bfinfdpic_add_dyn_reloc (output_bfd
, bfinfdpic_gotrel_section (info
),
2227 _bfd_elf_section_offset
2229 bfinfdpic_got_section (info
),
2230 bfinfdpic_got_initial_offset (info
)
2232 + bfinfdpic_got_section (info
)
2233 ->output_section
->vma
2234 + bfinfdpic_got_section (info
)->output_offset
,
2235 R_BFIN_BYTE4_DATA
, idx
, ad
, entry
);
2237 bfd_put_32 (output_bfd
, ad
,
2238 bfinfdpic_got_section (info
)->contents
2239 + bfinfdpic_got_initial_offset (info
)
2240 + entry
->got_entry
);
2243 /* Generate relocation for GOT entry pointing to a canonical
2244 function descriptor. */
2245 if (entry
->fdgot_entry
)
2250 if (! (entry
->symndx
== -1
2251 && entry
->d
.h
->root
.type
== bfd_link_hash_undefweak
2252 && BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2254 /* If the symbol is dynamic and there may be dynamic symbol
2255 resolution because we are, or are linked with, a shared
2256 library, emit a FUNCDESC relocation such that the dynamic
2257 linker will allocate the function descriptor. If the
2258 symbol needs a non-local function descriptor but binds
2259 locally (e.g., its visibility is protected, emit a
2260 dynamic relocation decayed to section+offset. */
2261 if (entry
->symndx
== -1
2262 && ! BFINFDPIC_FUNCDESC_LOCAL (info
, entry
->d
.h
)
2263 && BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)
2264 && !(info
->executable
&& !info
->pie
))
2266 reloc
= R_BFIN_FUNCDESC
;
2267 idx
= elf_section_data (entry
->d
.h
->root
.u
.def
.section
2268 ->output_section
)->dynindx
;
2269 ad
= entry
->d
.h
->root
.u
.def
.section
->output_offset
2270 + entry
->d
.h
->root
.u
.def
.value
;
2272 else if (entry
->symndx
== -1
2273 && ! BFINFDPIC_FUNCDESC_LOCAL (info
, entry
->d
.h
))
2275 reloc
= R_BFIN_FUNCDESC
;
2283 /* Otherwise, we know we have a private function descriptor,
2284 so reference it directly. */
2285 if (elf_hash_table (info
)->dynamic_sections_created
)
2286 BFD_ASSERT (entry
->privfd
);
2287 reloc
= R_BFIN_BYTE4_DATA
;
2288 idx
= elf_section_data (bfinfdpic_got_section (info
)
2289 ->output_section
)->dynindx
;
2290 ad
= bfinfdpic_got_section (info
)->output_offset
2291 + bfinfdpic_got_initial_offset (info
) + entry
->fd_entry
;
2294 /* If there is room for dynamic symbol resolution, emit the
2295 dynamic relocation. However, if we're linking an
2296 executable at a fixed location, we won't have emitted a
2297 dynamic symbol entry for the got section, so idx will be
2298 zero, which means we can and should compute the address
2299 of the private descriptor ourselves. */
2300 if (info
->executable
&& !info
->pie
2301 && (entry
->symndx
!= -1
2302 || BFINFDPIC_FUNCDESC_LOCAL (info
, entry
->d
.h
)))
2304 ad
+= bfinfdpic_got_section (info
)->output_section
->vma
;
2305 _bfinfdpic_add_rofixup (output_bfd
,
2306 bfinfdpic_gotfixup_section (info
),
2307 bfinfdpic_got_section (info
)
2308 ->output_section
->vma
2309 + bfinfdpic_got_section (info
)
2311 + bfinfdpic_got_initial_offset (info
)
2312 + entry
->fdgot_entry
, entry
);
2315 _bfinfdpic_add_dyn_reloc (output_bfd
,
2316 bfinfdpic_gotrel_section (info
),
2317 _bfd_elf_section_offset
2319 bfinfdpic_got_section (info
),
2320 bfinfdpic_got_initial_offset (info
)
2321 + entry
->fdgot_entry
)
2322 + bfinfdpic_got_section (info
)
2323 ->output_section
->vma
2324 + bfinfdpic_got_section (info
)
2326 reloc
, idx
, ad
, entry
);
2329 bfd_put_32 (output_bfd
, ad
,
2330 bfinfdpic_got_section (info
)->contents
2331 + bfinfdpic_got_initial_offset (info
)
2332 + entry
->fdgot_entry
);
2335 /* Generate relocation to fill in a private function descriptor in
2337 if (entry
->fd_entry
)
2340 bfd_vma ad
= addend
;
2342 long lowword
, highword
;
2344 /* If the symbol is dynamic but binds locally, use
2346 if (sec
&& (entry
->symndx
!= -1
2347 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2349 if (entry
->symndx
== -1)
2350 ad
+= entry
->d
.h
->root
.u
.def
.value
;
2352 ad
+= sym
->st_value
;
2353 ad
+= sec
->output_offset
;
2354 if (sec
->output_section
&& elf_section_data (sec
->output_section
))
2355 idx
= elf_section_data (sec
->output_section
)->dynindx
;
2360 /* If we're linking an executable at a fixed address, we can
2361 omit the dynamic relocation as long as the symbol is local to
2363 if (info
->executable
&& !info
->pie
2364 && (entry
->symndx
!= -1 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2367 ad
+= sec
->output_section
->vma
;
2369 if (entry
->symndx
!= -1
2370 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
2372 _bfinfdpic_add_rofixup (output_bfd
,
2373 bfinfdpic_gotfixup_section (info
),
2374 bfinfdpic_got_section (info
)
2375 ->output_section
->vma
2376 + bfinfdpic_got_section (info
)
2378 + bfinfdpic_got_initial_offset (info
)
2379 + entry
->fd_entry
, entry
);
2380 _bfinfdpic_add_rofixup (output_bfd
,
2381 bfinfdpic_gotfixup_section (info
),
2382 bfinfdpic_got_section (info
)
2383 ->output_section
->vma
2384 + bfinfdpic_got_section (info
)
2386 + bfinfdpic_got_initial_offset (info
)
2387 + entry
->fd_entry
+ 4, entry
);
2393 = _bfinfdpic_add_dyn_reloc (output_bfd
,
2395 ? bfinfdpic_pltrel_section (info
)
2396 : bfinfdpic_gotrel_section (info
),
2397 _bfd_elf_section_offset
2399 bfinfdpic_got_section (info
),
2400 bfinfdpic_got_initial_offset (info
)
2402 + bfinfdpic_got_section (info
)
2403 ->output_section
->vma
2404 + bfinfdpic_got_section (info
)
2406 R_BFIN_FUNCDESC_VALUE
, idx
, ad
, entry
);
2409 /* If we've omitted the dynamic relocation, just emit the fixed
2410 addresses of the symbol and of the local GOT base offset. */
2411 if (info
->executable
&& !info
->pie
&& sec
&& sec
->output_section
)
2414 highword
= bfinfdpic_got_section (info
)->output_section
->vma
2415 + bfinfdpic_got_section (info
)->output_offset
2416 + bfinfdpic_got_initial_offset (info
);
2418 else if (entry
->lazyplt
)
2423 fd_lazy_rel_offset
= ofst
;
2425 /* A function descriptor used for lazy or local resolving is
2426 initialized such that its high word contains the output
2427 section index in which the PLT entries are located, and
2428 the low word contains the address of the lazy PLT entry
2429 entry point, that must be within the memory region
2430 assigned to that section. */
2431 lowword
= entry
->lzplt_entry
+ 4
2432 + bfinfdpic_plt_section (info
)->output_offset
2433 + bfinfdpic_plt_section (info
)->output_section
->vma
;
2434 highword
= _bfinfdpic_osec_to_segment
2435 (output_bfd
, bfinfdpic_plt_section (info
)->output_section
);
2439 /* A function descriptor for a local function gets the index
2440 of the section. For a non-local function, it's
2444 || (entry
->symndx
== -1 && entry
->d
.h
->dynindx
!= -1
2445 && entry
->d
.h
->dynindx
== idx
))
2448 highword
= _bfinfdpic_osec_to_segment
2449 (output_bfd
, sec
->output_section
);
2452 bfd_put_32 (output_bfd
, lowword
,
2453 bfinfdpic_got_section (info
)->contents
2454 + bfinfdpic_got_initial_offset (info
)
2456 bfd_put_32 (output_bfd
, highword
,
2457 bfinfdpic_got_section (info
)->contents
2458 + bfinfdpic_got_initial_offset (info
)
2459 + entry
->fd_entry
+ 4);
2462 /* Generate code for the PLT entry. */
2463 if (entry
->plt_entry
!= (bfd_vma
) -1)
2465 bfd_byte
*plt_code
= bfinfdpic_plt_section (info
)->contents
2468 BFD_ASSERT (entry
->fd_entry
);
2470 /* Figure out what kind of PLT entry we need, depending on the
2471 location of the function descriptor within the GOT. */
2472 if (entry
->fd_entry
>= -(1 << (18 - 1))
2473 && entry
->fd_entry
+ 4 < (1 << (18 - 1)))
2475 /* P1 = [P3 + fd_entry]; P3 = [P3 + fd_entry + 4] */
2476 bfd_put_32 (output_bfd
,
2477 0xe519 | ((entry
->fd_entry
<< 14) & 0xFFFF0000),
2479 bfd_put_32 (output_bfd
,
2480 0xe51b | (((entry
->fd_entry
+ 4) << 14) & 0xFFFF0000),
2486 /* P1.L = fd_entry; P1.H = fd_entry;
2490 bfd_put_32 (output_bfd
,
2491 0xe109 | (entry
->fd_entry
<< 16),
2493 bfd_put_32 (output_bfd
,
2494 0xe149 | (entry
->fd_entry
& 0xFFFF0000),
2496 bfd_put_16 (output_bfd
, 0x5ad9, plt_code
+ 8);
2497 bfd_put_16 (output_bfd
, 0x9159, plt_code
+ 10);
2498 bfd_put_16 (output_bfd
, 0xac5b, plt_code
+ 12);
2502 bfd_put_16 (output_bfd
, 0x0051, plt_code
);
2505 /* Generate code for the lazy PLT entry. */
2506 if (entry
->lzplt_entry
!= (bfd_vma
) -1)
2508 bfd_byte
*lzplt_code
= bfinfdpic_plt_section (info
)->contents
2509 + entry
->lzplt_entry
;
2510 bfd_vma resolverStub_addr
;
2512 bfd_put_32 (output_bfd
, fd_lazy_rel_offset
, lzplt_code
);
2515 resolverStub_addr
= entry
->lzplt_entry
/ BFINFDPIC_LZPLT_BLOCK_SIZE
2516 * BFINFDPIC_LZPLT_BLOCK_SIZE
+ BFINFDPIC_LZPLT_RESOLV_LOC
;
2517 if (resolverStub_addr
>= bfinfdpic_plt_initial_offset (info
))
2518 resolverStub_addr
= bfinfdpic_plt_initial_offset (info
) - LZPLT_NORMAL_SIZE
- LZPLT_RESOLVER_EXTRA
;
2520 if (entry
->lzplt_entry
== resolverStub_addr
)
2522 /* This is a lazy PLT entry that includes a resolver call.
2526 bfd_put_32 (output_bfd
,
2529 bfd_put_16 (output_bfd
, 0x0052, lzplt_code
+ 4);
2533 /* JUMP.S resolverStub */
2534 bfd_put_16 (output_bfd
,
2536 | (((resolverStub_addr
- entry
->lzplt_entry
)
2537 / 2) & (((bfd_vma
)1 << 12) - 1)),
2545 /* Relocate an Blackfin ELF section.
2547 The RELOCATE_SECTION function is called by the new ELF backend linker
2548 to handle the relocations for a section.
2550 The relocs are always passed as Rela structures; if the section
2551 actually uses Rel structures, the r_addend field will always be
2554 This function is responsible for adjusting the section contents as
2555 necessary, and (if using Rela relocs and generating a relocatable
2556 output file) adjusting the reloc addend as necessary.
2558 This function does not have to worry about setting the reloc
2559 address or the reloc symbol index.
2561 LOCAL_SYMS is a pointer to the swapped in local symbols.
2563 LOCAL_SECTIONS is an array giving the section in the input file
2564 corresponding to the st_shndx field of each local symbol.
2566 The global hash table entry for the global symbols can be found
2567 via elf_sym_hashes (input_bfd).
2569 When generating relocatable output, this function must handle
2570 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2571 going to be the section symbol corresponding to the output
2572 section, which means that the addend must be adjusted
2576 bfinfdpic_relocate_section (bfd
* output_bfd
,
2577 struct bfd_link_info
*info
,
2579 asection
* input_section
,
2580 bfd_byte
* contents
,
2581 Elf_Internal_Rela
* relocs
,
2582 Elf_Internal_Sym
* local_syms
,
2583 asection
** local_sections
)
2585 Elf_Internal_Shdr
*symtab_hdr
;
2586 struct elf_link_hash_entry
**sym_hashes
;
2587 Elf_Internal_Rela
*rel
;
2588 Elf_Internal_Rela
*relend
;
2589 unsigned isec_segment
, got_segment
, plt_segment
,
2591 int silence_segment_error
= !(info
->shared
|| info
->pie
);
2593 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
2594 sym_hashes
= elf_sym_hashes (input_bfd
);
2595 relend
= relocs
+ input_section
->reloc_count
;
2597 isec_segment
= _bfinfdpic_osec_to_segment (output_bfd
,
2598 input_section
->output_section
);
2599 if (IS_FDPIC (output_bfd
) && bfinfdpic_got_section (info
))
2600 got_segment
= _bfinfdpic_osec_to_segment (output_bfd
,
2601 bfinfdpic_got_section (info
)
2605 if (IS_FDPIC (output_bfd
) && elf_hash_table (info
)->dynamic_sections_created
)
2606 plt_segment
= _bfinfdpic_osec_to_segment (output_bfd
,
2607 bfinfdpic_plt_section (info
)
2612 for (rel
= relocs
; rel
< relend
; rel
++)
2614 reloc_howto_type
*howto
;
2615 unsigned long r_symndx
;
2616 Elf_Internal_Sym
*sym
;
2618 struct elf_link_hash_entry
*h
;
2620 bfd_reloc_status_type r
;
2621 const char * name
= NULL
;
2624 struct bfinfdpic_relocs_info
*picrel
;
2625 bfd_vma orig_addend
= rel
->r_addend
;
2627 r_type
= ELF32_R_TYPE (rel
->r_info
);
2629 if (r_type
== R_BFIN_GNU_VTINHERIT
2630 || r_type
== R_BFIN_GNU_VTENTRY
)
2633 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2634 howto
= bfin_reloc_type_lookup (input_bfd
, r_type
);
2637 bfd_set_error (bfd_error_bad_value
);
2645 if (r_symndx
< symtab_hdr
->sh_info
)
2647 sym
= local_syms
+ r_symndx
;
2648 osec
= sec
= local_sections
[r_symndx
];
2649 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2651 name
= bfd_elf_string_from_elf_section
2652 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
2653 name
= (name
== NULL
) ? bfd_section_name (input_bfd
, sec
) : name
;
2658 bfd_boolean unresolved_reloc
;
2660 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2661 r_symndx
, symtab_hdr
, sym_hashes
,
2663 unresolved_reloc
, warned
);
2667 if (sec
!= NULL
&& discarded_section (sec
))
2668 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2669 rel
, 1, relend
, howto
, 0, contents
);
2671 if (info
->relocatable
)
2675 && (h
->root
.type
== bfd_link_hash_defined
2676 || h
->root
.type
== bfd_link_hash_defweak
)
2677 && !BFINFDPIC_SYM_LOCAL (info
, h
))
2685 case R_BFIN_PCREL24
:
2686 case R_BFIN_PCREL24_JUMP_L
:
2687 case R_BFIN_BYTE4_DATA
:
2688 if (! IS_FDPIC (output_bfd
))
2691 case R_BFIN_GOT17M4
:
2694 case R_BFIN_FUNCDESC_GOT17M4
:
2695 case R_BFIN_FUNCDESC_GOTHI
:
2696 case R_BFIN_FUNCDESC_GOTLO
:
2697 case R_BFIN_GOTOFF17M4
:
2698 case R_BFIN_GOTOFFHI
:
2699 case R_BFIN_GOTOFFLO
:
2700 case R_BFIN_FUNCDESC_GOTOFF17M4
:
2701 case R_BFIN_FUNCDESC_GOTOFFHI
:
2702 case R_BFIN_FUNCDESC_GOTOFFLO
:
2703 case R_BFIN_FUNCDESC
:
2704 case R_BFIN_FUNCDESC_VALUE
:
2706 picrel
= bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info
2707 (info
), input_bfd
, h
,
2708 orig_addend
, INSERT
);
2710 /* In order to find the entry we created before, we must
2711 use the original addend, not the one that may have been
2712 modified by _bfd_elf_rela_local_sym(). */
2713 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
2714 (info
), input_bfd
, r_symndx
,
2715 orig_addend
, INSERT
);
2719 if (!_bfinfdpic_emit_got_relocs_plt_entries (picrel
, output_bfd
, info
,
2723 (*_bfd_error_handler
)
2724 (_("%B: relocation at `%A+0x%x' references symbol `%s' with nonzero addend"),
2725 input_bfd
, input_section
, rel
->r_offset
, name
);
2735 if (h
&& ! BFINFDPIC_SYM_LOCAL (info
, h
)
2736 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2737 rel
->r_offset
) != (bfd_vma
) -1)
2739 info
->callbacks
->warning
2740 (info
, _("relocation references symbol not defined in the module"),
2741 name
, input_bfd
, input_section
, rel
->r_offset
);
2749 case R_BFIN_PCREL24
:
2750 case R_BFIN_PCREL24_JUMP_L
:
2751 check_segment
[0] = isec_segment
;
2752 if (! IS_FDPIC (output_bfd
))
2753 check_segment
[1] = isec_segment
;
2754 else if (picrel
->plt
)
2756 relocation
= bfinfdpic_plt_section (info
)->output_section
->vma
2757 + bfinfdpic_plt_section (info
)->output_offset
2758 + picrel
->plt_entry
;
2759 check_segment
[1] = plt_segment
;
2761 /* We don't want to warn on calls to undefined weak symbols,
2762 as calls to them must be protected by non-NULL tests
2763 anyway, and unprotected calls would invoke undefined
2765 else if (picrel
->symndx
== -1
2766 && picrel
->d
.h
->root
.type
== bfd_link_hash_undefweak
)
2767 check_segment
[1] = check_segment
[0];
2769 check_segment
[1] = sec
2770 ? _bfinfdpic_osec_to_segment (output_bfd
, sec
->output_section
)
2774 case R_BFIN_GOT17M4
:
2777 relocation
= picrel
->got_entry
;
2778 check_segment
[0] = check_segment
[1] = got_segment
;
2781 case R_BFIN_FUNCDESC_GOT17M4
:
2782 case R_BFIN_FUNCDESC_GOTHI
:
2783 case R_BFIN_FUNCDESC_GOTLO
:
2784 relocation
= picrel
->fdgot_entry
;
2785 check_segment
[0] = check_segment
[1] = got_segment
;
2788 case R_BFIN_GOTOFFHI
:
2789 case R_BFIN_GOTOFF17M4
:
2790 case R_BFIN_GOTOFFLO
:
2791 relocation
-= bfinfdpic_got_section (info
)->output_section
->vma
2792 + bfinfdpic_got_section (info
)->output_offset
2793 + bfinfdpic_got_initial_offset (info
);
2794 check_segment
[0] = got_segment
;
2795 check_segment
[1] = sec
2796 ? _bfinfdpic_osec_to_segment (output_bfd
, sec
->output_section
)
2800 case R_BFIN_FUNCDESC_GOTOFF17M4
:
2801 case R_BFIN_FUNCDESC_GOTOFFHI
:
2802 case R_BFIN_FUNCDESC_GOTOFFLO
:
2803 relocation
= picrel
->fd_entry
;
2804 check_segment
[0] = check_segment
[1] = got_segment
;
2807 case R_BFIN_FUNCDESC
:
2810 bfd_vma addend
= rel
->r_addend
;
2812 if (! (h
&& h
->root
.type
== bfd_link_hash_undefweak
2813 && BFINFDPIC_SYM_LOCAL (info
, h
)))
2815 /* If the symbol is dynamic and there may be dynamic
2816 symbol resolution because we are or are linked with a
2817 shared library, emit a FUNCDESC relocation such that
2818 the dynamic linker will allocate the function
2819 descriptor. If the symbol needs a non-local function
2820 descriptor but binds locally (e.g., its visibility is
2821 protected, emit a dynamic relocation decayed to
2823 if (h
&& ! BFINFDPIC_FUNCDESC_LOCAL (info
, h
)
2824 && BFINFDPIC_SYM_LOCAL (info
, h
)
2825 && !(info
->executable
&& !info
->pie
))
2827 dynindx
= elf_section_data (h
->root
.u
.def
.section
2828 ->output_section
)->dynindx
;
2829 addend
+= h
->root
.u
.def
.section
->output_offset
2830 + h
->root
.u
.def
.value
;
2832 else if (h
&& ! BFINFDPIC_FUNCDESC_LOCAL (info
, h
))
2836 info
->callbacks
->warning
2837 (info
, _("R_BFIN_FUNCDESC references dynamic symbol with nonzero addend"),
2838 name
, input_bfd
, input_section
, rel
->r_offset
);
2841 dynindx
= h
->dynindx
;
2845 /* Otherwise, we know we have a private function
2846 descriptor, so reference it directly. */
2847 BFD_ASSERT (picrel
->privfd
);
2848 r_type
= R_BFIN_BYTE4_DATA
;
2849 dynindx
= elf_section_data (bfinfdpic_got_section (info
)
2850 ->output_section
)->dynindx
;
2851 addend
= bfinfdpic_got_section (info
)->output_offset
2852 + bfinfdpic_got_initial_offset (info
)
2856 /* If there is room for dynamic symbol resolution, emit
2857 the dynamic relocation. However, if we're linking an
2858 executable at a fixed location, we won't have emitted a
2859 dynamic symbol entry for the got section, so idx will
2860 be zero, which means we can and should compute the
2861 address of the private descriptor ourselves. */
2862 if (info
->executable
&& !info
->pie
2863 && (!h
|| BFINFDPIC_FUNCDESC_LOCAL (info
, h
)))
2867 addend
+= bfinfdpic_got_section (info
)->output_section
->vma
;
2868 if ((bfd_get_section_flags (output_bfd
,
2869 input_section
->output_section
)
2870 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
2872 if (_bfinfdpic_osec_readonly_p (output_bfd
,
2876 info
->callbacks
->warning
2878 _("cannot emit fixups in read-only section"),
2879 name
, input_bfd
, input_section
, rel
->r_offset
);
2883 offset
= _bfd_elf_section_offset
2885 input_section
, rel
->r_offset
);
2887 if (offset
!= (bfd_vma
)-1)
2888 _bfinfdpic_add_rofixup (output_bfd
,
2889 bfinfdpic_gotfixup_section
2891 offset
+ input_section
2892 ->output_section
->vma
2893 + input_section
->output_offset
,
2897 else if ((bfd_get_section_flags (output_bfd
,
2898 input_section
->output_section
)
2899 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
2903 if (_bfinfdpic_osec_readonly_p (output_bfd
,
2907 info
->callbacks
->warning
2909 _("cannot emit dynamic relocations in read-only section"),
2910 name
, input_bfd
, input_section
, rel
->r_offset
);
2913 offset
= _bfd_elf_section_offset (output_bfd
, info
,
2914 input_section
, rel
->r_offset
);
2916 if (offset
!= (bfd_vma
)-1)
2917 _bfinfdpic_add_dyn_reloc (output_bfd
,
2918 bfinfdpic_gotrel_section (info
),
2919 offset
+ input_section
2920 ->output_section
->vma
2921 + input_section
->output_offset
,
2923 dynindx
, addend
, picrel
);
2926 addend
+= bfinfdpic_got_section (info
)->output_section
->vma
;
2929 /* We want the addend in-place because dynamic
2930 relocations are REL. Setting relocation to it should
2931 arrange for it to be installed. */
2932 relocation
= addend
- rel
->r_addend
;
2934 check_segment
[0] = check_segment
[1] = got_segment
;
2937 case R_BFIN_BYTE4_DATA
:
2938 if (! IS_FDPIC (output_bfd
))
2940 check_segment
[0] = check_segment
[1] = -1;
2944 case R_BFIN_FUNCDESC_VALUE
:
2947 bfd_vma addend
= rel
->r_addend
;
2949 offset
= _bfd_elf_section_offset (output_bfd
, info
,
2950 input_section
, rel
->r_offset
);
2952 /* If the symbol is dynamic but binds locally, use
2954 if (h
&& ! BFINFDPIC_SYM_LOCAL (info
, h
))
2956 if (addend
&& r_type
== R_BFIN_FUNCDESC_VALUE
)
2958 info
->callbacks
->warning
2959 (info
, _("R_BFIN_FUNCDESC_VALUE references dynamic symbol with nonzero addend"),
2960 name
, input_bfd
, input_section
, rel
->r_offset
);
2963 dynindx
= h
->dynindx
;
2968 addend
+= h
->root
.u
.def
.value
;
2970 addend
+= sym
->st_value
;
2972 addend
+= osec
->output_offset
;
2973 if (osec
&& osec
->output_section
2974 && ! bfd_is_abs_section (osec
->output_section
)
2975 && ! bfd_is_und_section (osec
->output_section
))
2976 dynindx
= elf_section_data (osec
->output_section
)->dynindx
;
2981 /* If we're linking an executable at a fixed address, we
2982 can omit the dynamic relocation as long as the symbol
2983 is defined in the current link unit (which is implied
2984 by its output section not being NULL). */
2985 if (info
->executable
&& !info
->pie
2986 && (!h
|| BFINFDPIC_SYM_LOCAL (info
, h
)))
2989 addend
+= osec
->output_section
->vma
;
2990 if (IS_FDPIC (input_bfd
)
2991 && (bfd_get_section_flags (output_bfd
,
2992 input_section
->output_section
)
2993 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
2995 if (_bfinfdpic_osec_readonly_p (output_bfd
,
2999 info
->callbacks
->warning
3001 _("cannot emit fixups in read-only section"),
3002 name
, input_bfd
, input_section
, rel
->r_offset
);
3005 if (!h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
3007 if (offset
!= (bfd_vma
)-1)
3009 _bfinfdpic_add_rofixup (output_bfd
,
3010 bfinfdpic_gotfixup_section
3012 offset
+ input_section
3013 ->output_section
->vma
3014 + input_section
->output_offset
,
3017 if (r_type
== R_BFIN_FUNCDESC_VALUE
)
3018 _bfinfdpic_add_rofixup
3020 bfinfdpic_gotfixup_section (info
),
3021 offset
+ input_section
->output_section
->vma
3022 + input_section
->output_offset
+ 4, picrel
);
3029 if ((bfd_get_section_flags (output_bfd
,
3030 input_section
->output_section
)
3031 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
3033 if (_bfinfdpic_osec_readonly_p (output_bfd
,
3037 info
->callbacks
->warning
3039 _("cannot emit dynamic relocations in read-only section"),
3040 name
, input_bfd
, input_section
, rel
->r_offset
);
3044 if (offset
!= (bfd_vma
)-1)
3045 _bfinfdpic_add_dyn_reloc (output_bfd
,
3046 bfinfdpic_gotrel_section (info
),
3048 + input_section
->output_section
->vma
3049 + input_section
->output_offset
,
3050 r_type
, dynindx
, addend
, picrel
);
3053 addend
+= osec
->output_section
->vma
;
3054 /* We want the addend in-place because dynamic
3055 relocations are REL. Setting relocation to it
3056 should arrange for it to be installed. */
3057 relocation
= addend
- rel
->r_addend
;
3060 if (r_type
== R_BFIN_FUNCDESC_VALUE
)
3062 /* If we've omitted the dynamic relocation, just emit
3063 the fixed addresses of the symbol and of the local
3065 if (info
->executable
&& !info
->pie
3066 && (!h
|| BFINFDPIC_SYM_LOCAL (info
, h
)))
3067 bfd_put_32 (output_bfd
,
3068 bfinfdpic_got_section (info
)->output_section
->vma
3069 + bfinfdpic_got_section (info
)->output_offset
3070 + bfinfdpic_got_initial_offset (info
),
3071 contents
+ rel
->r_offset
+ 4);
3073 /* A function descriptor used for lazy or local
3074 resolving is initialized such that its high word
3075 contains the output section index in which the
3076 PLT entries are located, and the low word
3077 contains the offset of the lazy PLT entry entry
3078 point into that section. */
3079 bfd_put_32 (output_bfd
,
3080 h
&& ! BFINFDPIC_SYM_LOCAL (info
, h
)
3082 : _bfinfdpic_osec_to_segment (output_bfd
,
3085 contents
+ rel
->r_offset
+ 4);
3088 check_segment
[0] = check_segment
[1] = got_segment
;
3092 check_segment
[0] = isec_segment
;
3093 check_segment
[1] = sec
3094 ? _bfinfdpic_osec_to_segment (output_bfd
, sec
->output_section
)
3099 if (check_segment
[0] != check_segment
[1] && IS_FDPIC (output_bfd
))
3101 #if 1 /* If you take this out, remove the #error from fdpic-static-6.d
3102 in the ld testsuite. */
3103 /* This helps catch problems in GCC while we can't do more
3104 than static linking. The idea is to test whether the
3105 input file basename is crt0.o only once. */
3106 if (silence_segment_error
== 1)
3107 silence_segment_error
=
3108 (strlen (input_bfd
->filename
) == 6
3109 && filename_cmp (input_bfd
->filename
, "crt0.o") == 0)
3110 || (strlen (input_bfd
->filename
) > 6
3111 && filename_cmp (input_bfd
->filename
3112 + strlen (input_bfd
->filename
) - 7,
3116 if (!silence_segment_error
3117 /* We don't want duplicate errors for undefined
3119 && !(picrel
&& picrel
->symndx
== -1
3120 && picrel
->d
.h
->root
.type
== bfd_link_hash_undefined
))
3121 info
->callbacks
->warning
3123 (info
->shared
|| info
->pie
)
3124 ? _("relocations between different segments are not supported")
3125 : _("warning: relocation references a different segment"),
3126 name
, input_bfd
, input_section
, rel
->r_offset
);
3127 if (!silence_segment_error
&& (info
->shared
|| info
->pie
))
3129 elf_elfheader (output_bfd
)->e_flags
|= EF_BFIN_PIC
;
3134 case R_BFIN_GOTOFFHI
:
3135 /* We need the addend to be applied before we shift the
3137 relocation
+= rel
->r_addend
;
3140 case R_BFIN_FUNCDESC_GOTHI
:
3141 case R_BFIN_FUNCDESC_GOTOFFHI
:
3146 case R_BFIN_FUNCDESC_GOTLO
:
3147 case R_BFIN_GOTOFFLO
:
3148 case R_BFIN_FUNCDESC_GOTOFFLO
:
3149 relocation
&= 0xffff;
3158 case R_BFIN_PCREL24
:
3159 case R_BFIN_PCREL24_JUMP_L
:
3160 if (! IS_FDPIC (output_bfd
) || ! picrel
->plt
)
3164 /* When referencing a GOT entry, a function descriptor or a
3165 PLT, we don't want the addend to apply to the reference,
3166 but rather to the referenced symbol. The actual entry
3167 will have already been created taking the addend into
3168 account, so cancel it out here. */
3169 case R_BFIN_GOT17M4
:
3172 case R_BFIN_FUNCDESC_GOT17M4
:
3173 case R_BFIN_FUNCDESC_GOTHI
:
3174 case R_BFIN_FUNCDESC_GOTLO
:
3175 case R_BFIN_FUNCDESC_GOTOFF17M4
:
3176 case R_BFIN_FUNCDESC_GOTOFFHI
:
3177 case R_BFIN_FUNCDESC_GOTOFFLO
:
3178 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF17M4
3179 here, since we do want to apply the addend to the others.
3180 Note that we've applied the addend to GOTOFFHI before we
3181 shifted it right. */
3182 case R_BFIN_GOTOFFHI
:
3183 relocation
-= rel
->r_addend
;
3190 r
= bfin_final_link_relocate (rel
, howto
, input_bfd
, input_section
,
3191 contents
, rel
->r_offset
,
3192 relocation
, rel
->r_addend
);
3194 if (r
!= bfd_reloc_ok
)
3196 const char * msg
= (const char *) NULL
;
3200 case bfd_reloc_overflow
:
3201 r
= info
->callbacks
->reloc_overflow
3202 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3203 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
3206 case bfd_reloc_undefined
:
3207 r
= info
->callbacks
->undefined_symbol
3208 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
3211 case bfd_reloc_outofrange
:
3212 msg
= _("internal error: out of range error");
3215 case bfd_reloc_notsupported
:
3216 msg
= _("internal error: unsupported relocation error");
3219 case bfd_reloc_dangerous
:
3220 msg
= _("internal error: dangerous relocation");
3224 msg
= _("internal error: unknown error");
3229 r
= info
->callbacks
->warning
3230 (info
, msg
, name
, input_bfd
, input_section
, rel
->r_offset
);
3240 /* Update the relocation information for the relocations of the section
3244 bfinfdpic_gc_sweep_hook (bfd
*abfd
,
3245 struct bfd_link_info
*info
,
3247 const Elf_Internal_Rela
*relocs
)
3249 Elf_Internal_Shdr
*symtab_hdr
;
3250 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
3251 const Elf_Internal_Rela
*rel
;
3252 const Elf_Internal_Rela
*rel_end
;
3253 struct bfinfdpic_relocs_info
*picrel
;
3255 BFD_ASSERT (IS_FDPIC (abfd
));
3257 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3258 sym_hashes
= elf_sym_hashes (abfd
);
3259 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/sizeof(Elf32_External_Sym
);
3260 if (!elf_bad_symtab (abfd
))
3261 sym_hashes_end
-= symtab_hdr
->sh_info
;
3263 rel_end
= relocs
+ sec
->reloc_count
;
3264 for (rel
= relocs
; rel
< rel_end
; rel
++)
3266 struct elf_link_hash_entry
*h
;
3267 unsigned long r_symndx
;
3269 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3270 if (r_symndx
< symtab_hdr
->sh_info
)
3273 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3276 picrel
= bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info
),
3278 rel
->r_addend
, NO_INSERT
);
3280 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
3281 (info
), abfd
, r_symndx
,
3282 rel
->r_addend
, NO_INSERT
);
3287 switch (ELF32_R_TYPE (rel
->r_info
))
3289 case R_BFIN_PCREL24
:
3290 case R_BFIN_PCREL24_JUMP_L
:
3294 case R_BFIN_FUNCDESC_VALUE
:
3295 picrel
->relocsfdv
--;
3296 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
3300 case R_BFIN_BYTE4_DATA
:
3302 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
3306 case R_BFIN_GOT17M4
:
3315 case R_BFIN_FUNCDESC_GOT17M4
:
3316 picrel
->fdgot17m4
--;
3319 case R_BFIN_FUNCDESC_GOTHI
:
3320 case R_BFIN_FUNCDESC_GOTLO
:
3321 picrel
->fdgothilo
--;
3324 case R_BFIN_GOTOFF17M4
:
3325 case R_BFIN_GOTOFFHI
:
3326 case R_BFIN_GOTOFFLO
:
3330 case R_BFIN_FUNCDESC_GOTOFF17M4
:
3331 picrel
->fdgoff17m4
--;
3334 case R_BFIN_FUNCDESC_GOTOFFHI
:
3335 case R_BFIN_FUNCDESC_GOTOFFLO
:
3336 picrel
->fdgoffhilo
--;
3339 case R_BFIN_FUNCDESC
:
3352 /* We need dynamic symbols for every section, since segments can
3353 relocate independently. */
3355 _bfinfdpic_link_omit_section_dynsym (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3356 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3359 switch (elf_section_data (p
)->this_hdr
.sh_type
)
3363 /* If sh_type is yet undecided, assume it could be
3364 SHT_PROGBITS/SHT_NOBITS. */
3368 /* There shouldn't be section relative relocations
3369 against any other section. */
3375 /* Create a .got section, as well as its additional info field. This
3376 is almost entirely copied from
3377 elflink.c:_bfd_elf_create_got_section(). */
3380 _bfin_create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
3382 flagword flags
, pltflags
;
3384 struct elf_link_hash_entry
*h
;
3385 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3388 /* This function may be called more than once. */
3389 s
= bfd_get_linker_section (abfd
, ".got");
3393 /* Machine specific: although pointers are 32-bits wide, we want the
3394 GOT to be aligned to a 64-bit boundary, such that function
3395 descriptors in it can be accessed with 64-bit loads and
3399 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3400 | SEC_LINKER_CREATED
);
3403 s
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
3405 || !bfd_set_section_alignment (abfd
, s
, ptralign
))
3408 if (bed
->want_got_plt
)
3410 s
= bfd_make_section_anyway_with_flags (abfd
, ".got.plt", flags
);
3412 || !bfd_set_section_alignment (abfd
, s
, ptralign
))
3416 if (bed
->want_got_sym
)
3418 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
3419 (or .got.plt) section. We don't do this in the linker script
3420 because we don't want to define the symbol if we are not creating
3421 a global offset table. */
3422 h
= _bfd_elf_define_linkage_sym (abfd
, info
, s
, "__GLOBAL_OFFSET_TABLE_");
3423 elf_hash_table (info
)->hgot
= h
;
3427 /* Machine-specific: we want the symbol for executables as
3429 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3433 /* The first bit of the global offset table is the header. */
3434 s
->size
+= bed
->got_header_size
;
3436 /* This is the machine-specific part. Create and initialize section
3437 data for the got. */
3438 if (IS_FDPIC (abfd
))
3440 bfinfdpic_got_section (info
) = s
;
3441 bfinfdpic_relocs_info (info
) = htab_try_create (1,
3442 bfinfdpic_relocs_info_hash
,
3443 bfinfdpic_relocs_info_eq
,
3445 if (! bfinfdpic_relocs_info (info
))
3448 s
= bfd_make_section_anyway_with_flags (abfd
, ".rel.got",
3449 (flags
| SEC_READONLY
));
3451 || ! bfd_set_section_alignment (abfd
, s
, 2))
3454 bfinfdpic_gotrel_section (info
) = s
;
3456 /* Machine-specific. */
3457 s
= bfd_make_section_anyway_with_flags (abfd
, ".rofixup",
3458 (flags
| SEC_READONLY
));
3460 || ! bfd_set_section_alignment (abfd
, s
, 2))
3463 bfinfdpic_gotfixup_section (info
) = s
;
3466 pltflags
|= SEC_CODE
;
3467 if (bed
->plt_not_loaded
)
3468 pltflags
&= ~ (SEC_CODE
| SEC_LOAD
| SEC_HAS_CONTENTS
);
3469 if (bed
->plt_readonly
)
3470 pltflags
|= SEC_READONLY
;
3472 s
= bfd_make_section_anyway_with_flags (abfd
, ".plt", pltflags
);
3474 || ! bfd_set_section_alignment (abfd
, s
, bed
->plt_alignment
))
3476 /* Blackfin-specific: remember it. */
3477 bfinfdpic_plt_section (info
) = s
;
3479 if (bed
->want_plt_sym
)
3481 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
3483 struct bfd_link_hash_entry
*bh
= NULL
;
3485 if (! (_bfd_generic_link_add_one_symbol
3486 (info
, abfd
, "__PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
, 0, NULL
,
3487 FALSE
, get_elf_backend_data (abfd
)->collect
, &bh
)))
3489 h
= (struct elf_link_hash_entry
*) bh
;
3491 h
->type
= STT_OBJECT
;
3493 if (! info
->executable
3494 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
3498 /* Blackfin-specific: we want rel relocations for the plt. */
3499 s
= bfd_make_section_anyway_with_flags (abfd
, ".rel.plt",
3500 flags
| SEC_READONLY
);
3502 || ! bfd_set_section_alignment (abfd
, s
, bed
->s
->log_file_align
))
3504 /* Blackfin-specific: remember it. */
3505 bfinfdpic_pltrel_section (info
) = s
;
3510 /* Make sure the got and plt sections exist, and that our pointers in
3511 the link hash table point to them. */
3514 elf32_bfinfdpic_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3516 /* This is mostly copied from
3517 elflink.c:_bfd_elf_create_dynamic_sections(). */
3520 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3522 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3523 | SEC_LINKER_CREATED
);
3525 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
3526 .rel[a].bss sections. */
3528 /* Blackfin-specific: we want to create the GOT in the Blackfin way. */
3529 if (! _bfin_create_got_section (abfd
, info
))
3532 /* Blackfin-specific: make sure we created everything we wanted. */
3533 BFD_ASSERT (bfinfdpic_got_section (info
) && bfinfdpic_gotrel_section (info
)
3534 /* && bfinfdpic_gotfixup_section (info) */
3535 && bfinfdpic_plt_section (info
)
3536 && bfinfdpic_pltrel_section (info
));
3538 if (bed
->want_dynbss
)
3540 /* The .dynbss section is a place to put symbols which are defined
3541 by dynamic objects, are referenced by regular objects, and are
3542 not functions. We must allocate space for them in the process
3543 image and use a R_*_COPY reloc to tell the dynamic linker to
3544 initialize them at run time. The linker script puts the .dynbss
3545 section into the .bss section of the final image. */
3546 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynbss",
3547 SEC_ALLOC
| SEC_LINKER_CREATED
);
3551 /* The .rel[a].bss section holds copy relocs. This section is not
3552 normally needed. We need to create it here, though, so that the
3553 linker will map it to an output section. We can't just create it
3554 only if we need it, because we will not know whether we need it
3555 until we have seen all the input files, and the first time the
3556 main linker code calls BFD after examining all the input files
3557 (size_dynamic_sections) the input sections have already been
3558 mapped to the output sections. If the section turns out not to
3559 be needed, we can discard it later. We will never need this
3560 section when generating a shared object, since they do not use
3564 s
= bfd_make_section_anyway_with_flags (abfd
,
3566 flags
| SEC_READONLY
);
3568 || ! bfd_set_section_alignment (abfd
, s
, bed
->s
->log_file_align
))
3576 /* Compute the total GOT size required by each symbol in each range.
3577 Symbols may require up to 4 words in the GOT: an entry pointing to
3578 the symbol, an entry pointing to its function descriptor, and a
3579 private function descriptors taking two words. */
3582 _bfinfdpic_count_nontls_entries (struct bfinfdpic_relocs_info
*entry
,
3583 struct _bfinfdpic_dynamic_got_info
*dinfo
)
3585 /* Allocate space for a GOT entry pointing to the symbol. */
3587 dinfo
->got17m4
+= 4;
3588 else if (entry
->gothilo
)
3589 dinfo
->gothilo
+= 4;
3594 /* Allocate space for a GOT entry pointing to the function
3596 if (entry
->fdgot17m4
)
3597 dinfo
->got17m4
+= 4;
3598 else if (entry
->fdgothilo
)
3599 dinfo
->gothilo
+= 4;
3604 /* Decide whether we need a PLT entry, a function descriptor in the
3605 GOT, and a lazy PLT entry for this symbol. */
3606 entry
->plt
= entry
->call
3607 && entry
->symndx
== -1 && ! BFINFDPIC_SYM_LOCAL (dinfo
->info
, entry
->d
.h
)
3608 && elf_hash_table (dinfo
->info
)->dynamic_sections_created
;
3609 entry
->privfd
= entry
->plt
3610 || entry
->fdgoff17m4
|| entry
->fdgoffhilo
3611 || ((entry
->fd
|| entry
->fdgot17m4
|| entry
->fdgothilo
)
3612 && (entry
->symndx
!= -1
3613 || BFINFDPIC_FUNCDESC_LOCAL (dinfo
->info
, entry
->d
.h
)));
3614 entry
->lazyplt
= entry
->privfd
3615 && entry
->symndx
== -1 && ! BFINFDPIC_SYM_LOCAL (dinfo
->info
, entry
->d
.h
)
3616 && ! (dinfo
->info
->flags
& DF_BIND_NOW
)
3617 && elf_hash_table (dinfo
->info
)->dynamic_sections_created
;
3619 /* Allocate space for a function descriptor. */
3620 if (entry
->fdgoff17m4
)
3622 else if (entry
->privfd
&& entry
->plt
)
3624 else if (entry
->privfd
)
3631 dinfo
->lzplt
+= LZPLT_NORMAL_SIZE
;
3634 /* Compute the number of dynamic relocations and fixups that a symbol
3635 requires, and add (or subtract) from the grand and per-symbol
3639 _bfinfdpic_count_relocs_fixups (struct bfinfdpic_relocs_info
*entry
,
3640 struct _bfinfdpic_dynamic_got_info
*dinfo
,
3641 bfd_boolean subtract
)
3643 bfd_vma relocs
= 0, fixups
= 0;
3645 if (!dinfo
->info
->executable
|| dinfo
->info
->pie
)
3646 relocs
= entry
->relocs32
+ entry
->relocsfd
+ entry
->relocsfdv
;
3649 if (entry
->symndx
!= -1 || BFINFDPIC_SYM_LOCAL (dinfo
->info
, entry
->d
.h
))
3651 if (entry
->symndx
!= -1
3652 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
3653 fixups
+= entry
->relocs32
+ 2 * entry
->relocsfdv
;
3656 relocs
+= entry
->relocs32
+ entry
->relocsfdv
;
3658 if (entry
->symndx
!= -1
3659 || BFINFDPIC_FUNCDESC_LOCAL (dinfo
->info
, entry
->d
.h
))
3661 if (entry
->symndx
!= -1
3662 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
3663 fixups
+= entry
->relocsfd
;
3666 relocs
+= entry
->relocsfd
;
3675 entry
->dynrelocs
+= relocs
;
3676 entry
->fixups
+= fixups
;
3677 dinfo
->relocs
+= relocs
;
3678 dinfo
->fixups
+= fixups
;
3681 /* Compute the total GOT and PLT size required by each symbol in each range. *
3682 Symbols may require up to 4 words in the GOT: an entry pointing to
3683 the symbol, an entry pointing to its function descriptor, and a
3684 private function descriptors taking two words. */
3687 _bfinfdpic_count_got_plt_entries (void **entryp
, void *dinfo_
)
3689 struct bfinfdpic_relocs_info
*entry
= *entryp
;
3690 struct _bfinfdpic_dynamic_got_info
*dinfo
= dinfo_
;
3692 _bfinfdpic_count_nontls_entries (entry
, dinfo
);
3694 _bfinfdpic_count_relocs_fixups (entry
, dinfo
, FALSE
);
3699 /* This structure is used to assign offsets to got entries, function
3700 descriptors, plt entries and lazy plt entries. */
3702 struct _bfinfdpic_dynamic_got_plt_info
3704 /* Summary information collected with _bfinfdpic_count_got_plt_entries. */
3705 struct _bfinfdpic_dynamic_got_info g
;
3707 /* For each addressable range, we record a MAX (positive) and MIN
3708 (negative) value. CUR is used to assign got entries, and it's
3709 incremented from an initial positive value to MAX, then from MIN
3710 to FDCUR (unless FDCUR wraps around first). FDCUR is used to
3711 assign function descriptors, and it's decreased from an initial
3712 non-positive value to MIN, then from MAX down to CUR (unless CUR
3713 wraps around first). All of MIN, MAX, CUR and FDCUR always point
3714 to even words. ODD, if non-zero, indicates an odd word to be
3715 used for the next got entry, otherwise CUR is used and
3716 incremented by a pair of words, wrapping around when it reaches
3717 MAX. FDCUR is decremented (and wrapped) before the next function
3718 descriptor is chosen. FDPLT indicates the number of remaining
3719 slots that can be used for function descriptors used only by PLT
3721 struct _bfinfdpic_dynamic_got_alloc_data
3723 bfd_signed_vma max
, cur
, odd
, fdcur
, min
;
3728 /* Determine the positive and negative ranges to be used by each
3729 offset range in the GOT. FDCUR and CUR, that must be aligned to a
3730 double-word boundary, are the minimum (negative) and maximum
3731 (positive) GOT offsets already used by previous ranges, except for
3732 an ODD entry that may have been left behind. GOT and FD indicate
3733 the size of GOT entries and function descriptors that must be
3734 placed within the range from -WRAP to WRAP. If there's room left,
3735 up to FDPLT bytes should be reserved for additional function
3738 inline static bfd_signed_vma
3739 _bfinfdpic_compute_got_alloc_data (struct _bfinfdpic_dynamic_got_alloc_data
*gad
,
3740 bfd_signed_vma fdcur
,
3748 bfd_signed_vma wrapmin
= -wrap
;
3750 /* Start at the given initial points. */
3754 /* If we had an incoming odd word and we have any got entries that
3755 are going to use it, consume it, otherwise leave gad->odd at
3756 zero. We might force gad->odd to zero and return the incoming
3757 odd such that it is used by the next range, but then GOT entries
3758 might appear to be out of order and we wouldn't be able to
3759 shorten the GOT by one word if it turns out to end with an
3760 unpaired GOT entry. */
3770 /* If we're left with an unpaired GOT entry, compute its location
3771 such that we can return it. Otherwise, if got doesn't require an
3772 odd number of words here, either odd was already zero in the
3773 block above, or it was set to zero because got was non-zero, or
3774 got was already zero. In the latter case, we want the value of
3775 odd to carry over to the return statement, so we don't want to
3776 reset odd unless the condition below is true. */
3783 /* Compute the tentative boundaries of this range. */
3784 gad
->max
= cur
+ got
;
3785 gad
->min
= fdcur
- fd
;
3788 /* If function descriptors took too much space, wrap some of them
3790 if (gad
->min
< wrapmin
)
3792 gad
->max
+= wrapmin
- gad
->min
;
3795 /* If there is space left and we have function descriptors
3796 referenced in PLT entries that could take advantage of shorter
3797 offsets, place them here. */
3798 else if (fdplt
&& gad
->min
> wrapmin
)
3801 if ((bfd_vma
) (gad
->min
- wrapmin
) < fdplt
)
3802 fds
= gad
->min
- wrapmin
;
3811 /* If GOT entries took too much space, wrap some of them around.
3812 This may well cause gad->min to become lower than wrapmin. This
3813 will cause a relocation overflow later on, so we don't have to
3815 if ((bfd_vma
) gad
->max
> wrap
)
3817 gad
->min
-= gad
->max
- wrap
;
3820 /* If there is more space left, try to place some more function
3821 descriptors for PLT entries. */
3822 else if (fdplt
&& (bfd_vma
) gad
->max
< wrap
)
3825 if ((bfd_vma
) (wrap
- gad
->max
) < fdplt
)
3826 fds
= wrap
- gad
->max
;
3835 /* If odd was initially computed as an offset past the wrap point,
3838 odd
= gad
->min
+ odd
- gad
->max
;
3840 /* _bfinfdpic_get_got_entry() below will always wrap gad->cur if needed
3841 before returning, so do it here too. This guarantees that,
3842 should cur and fdcur meet at the wrap point, they'll both be
3844 if (gad
->cur
== gad
->max
)
3845 gad
->cur
= gad
->min
;
3850 /* Compute the location of the next GOT entry, given the allocation
3851 data for a range. */
3853 inline static bfd_signed_vma
3854 _bfinfdpic_get_got_entry (struct _bfinfdpic_dynamic_got_alloc_data
*gad
)
3860 /* If there was an odd word left behind, use it. */
3866 /* Otherwise, use the word pointed to by cur, reserve the next
3867 as an odd word, and skip to the next pair of words, possibly
3870 gad
->odd
= gad
->cur
+ 4;
3872 if (gad
->cur
== gad
->max
)
3873 gad
->cur
= gad
->min
;
3879 /* Compute the location of the next function descriptor entry in the
3880 GOT, given the allocation data for a range. */
3882 inline static bfd_signed_vma
3883 _bfinfdpic_get_fd_entry (struct _bfinfdpic_dynamic_got_alloc_data
*gad
)
3885 /* If we're at the bottom, wrap around, and only then allocate the
3886 next pair of words. */
3887 if (gad
->fdcur
== gad
->min
)
3888 gad
->fdcur
= gad
->max
;
3889 return gad
->fdcur
-= 8;
3892 /* Assign GOT offsets for every GOT entry and function descriptor.
3893 Doing everything in a single pass is tricky. */
3896 _bfinfdpic_assign_got_entries (void **entryp
, void *info_
)
3898 struct bfinfdpic_relocs_info
*entry
= *entryp
;
3899 struct _bfinfdpic_dynamic_got_plt_info
*dinfo
= info_
;
3902 entry
->got_entry
= _bfinfdpic_get_got_entry (&dinfo
->got17m4
);
3903 else if (entry
->gothilo
)
3904 entry
->got_entry
= _bfinfdpic_get_got_entry (&dinfo
->gothilo
);
3906 if (entry
->fdgot17m4
)
3907 entry
->fdgot_entry
= _bfinfdpic_get_got_entry (&dinfo
->got17m4
);
3908 else if (entry
->fdgothilo
)
3909 entry
->fdgot_entry
= _bfinfdpic_get_got_entry (&dinfo
->gothilo
);
3911 if (entry
->fdgoff17m4
)
3912 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->got17m4
);
3913 else if (entry
->plt
&& dinfo
->got17m4
.fdplt
)
3915 dinfo
->got17m4
.fdplt
-= 8;
3916 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->got17m4
);
3918 else if (entry
->plt
)
3920 dinfo
->gothilo
.fdplt
-= 8;
3921 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->gothilo
);
3923 else if (entry
->privfd
)
3924 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->gothilo
);
3929 /* Assign GOT offsets to private function descriptors used by PLT
3930 entries (or referenced by 32-bit offsets), as well as PLT entries
3931 and lazy PLT entries. */
3934 _bfinfdpic_assign_plt_entries (void **entryp
, void *info_
)
3936 struct bfinfdpic_relocs_info
*entry
= *entryp
;
3937 struct _bfinfdpic_dynamic_got_plt_info
*dinfo
= info_
;
3939 /* If this symbol requires a local function descriptor, allocate
3941 if (entry
->privfd
&& entry
->fd_entry
== 0)
3943 if (dinfo
->got17m4
.fdplt
)
3945 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->got17m4
);
3946 dinfo
->got17m4
.fdplt
-= 8;
3950 BFD_ASSERT (dinfo
->gothilo
.fdplt
);
3951 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->gothilo
);
3952 dinfo
->gothilo
.fdplt
-= 8;
3960 /* We use the section's raw size to mark the location of the
3962 entry
->plt_entry
= bfinfdpic_plt_section (dinfo
->g
.info
)->size
;
3964 /* Figure out the length of this PLT entry based on the
3965 addressing mode we need to reach the function descriptor. */
3966 BFD_ASSERT (entry
->fd_entry
);
3967 if (entry
->fd_entry
>= -(1 << (18 - 1))
3968 && entry
->fd_entry
+ 4 < (1 << (18 - 1)))
3973 bfinfdpic_plt_section (dinfo
->g
.info
)->size
+= size
;
3978 entry
->lzplt_entry
= dinfo
->g
.lzplt
;
3979 dinfo
->g
.lzplt
+= LZPLT_NORMAL_SIZE
;
3980 /* If this entry is the one that gets the resolver stub, account
3981 for the additional instruction. */
3982 if (entry
->lzplt_entry
% BFINFDPIC_LZPLT_BLOCK_SIZE
3983 == BFINFDPIC_LZPLT_RESOLV_LOC
)
3984 dinfo
->g
.lzplt
+= LZPLT_RESOLVER_EXTRA
;
3990 /* Cancel out any effects of calling _bfinfdpic_assign_got_entries and
3991 _bfinfdpic_assign_plt_entries. */
3994 _bfinfdpic_reset_got_plt_entries (void **entryp
, void *ignore ATTRIBUTE_UNUSED
)
3996 struct bfinfdpic_relocs_info
*entry
= *entryp
;
3998 entry
->got_entry
= 0;
3999 entry
->fdgot_entry
= 0;
4000 entry
->fd_entry
= 0;
4001 entry
->plt_entry
= (bfd_vma
)-1;
4002 entry
->lzplt_entry
= (bfd_vma
)-1;
4007 /* Follow indirect and warning hash entries so that each got entry
4008 points to the final symbol definition. P must point to a pointer
4009 to the hash table we're traversing. Since this traversal may
4010 modify the hash table, we set this pointer to NULL to indicate
4011 we've made a potentially-destructive change to the hash table, so
4012 the traversal must be restarted. */
4014 _bfinfdpic_resolve_final_relocs_info (void **entryp
, void *p
)
4016 struct bfinfdpic_relocs_info
*entry
= *entryp
;
4019 if (entry
->symndx
== -1)
4021 struct elf_link_hash_entry
*h
= entry
->d
.h
;
4022 struct bfinfdpic_relocs_info
*oentry
;
4024 while (h
->root
.type
== bfd_link_hash_indirect
4025 || h
->root
.type
== bfd_link_hash_warning
)
4026 h
= (struct elf_link_hash_entry
*)h
->root
.u
.i
.link
;
4028 if (entry
->d
.h
== h
)
4031 oentry
= bfinfdpic_relocs_info_for_global (*htab
, 0, h
, entry
->addend
,
4036 /* Merge the two entries. */
4037 bfinfdpic_pic_merge_early_relocs_info (oentry
, entry
);
4038 htab_clear_slot (*htab
, entryp
);
4044 /* If we can't find this entry with the new bfd hash, re-insert
4045 it, and get the traversal restarted. */
4046 if (! htab_find (*htab
, entry
))
4048 htab_clear_slot (*htab
, entryp
);
4049 entryp
= htab_find_slot (*htab
, entry
, INSERT
);
4052 /* Abort the traversal, since the whole table may have
4053 moved, and leave it up to the parent to restart the
4055 *(htab_t
*)p
= NULL
;
4063 /* Compute the total size of the GOT, the PLT, the dynamic relocations
4064 section and the rofixup section. Assign locations for GOT and PLT
4068 _bfinfdpic_size_got_plt (bfd
*output_bfd
,
4069 struct _bfinfdpic_dynamic_got_plt_info
*gpinfop
)
4073 struct bfd_link_info
*info
= gpinfop
->g
.info
;
4074 bfd
*dynobj
= elf_hash_table (info
)->dynobj
;
4076 memcpy (bfinfdpic_dynamic_got_plt_info (info
), &gpinfop
->g
,
4077 sizeof (gpinfop
->g
));
4080 /* Compute the total size taken by entries in the 18-bit range,
4081 to tell how many PLT function descriptors we can bring into it
4082 without causing it to overflow. */
4083 limit
= odd
+ gpinfop
->g
.got17m4
+ gpinfop
->g
.fd17m4
;
4084 if (limit
< (bfd_vma
)1 << 18)
4085 limit
= ((bfd_vma
)1 << 18) - limit
;
4088 if (gpinfop
->g
.fdplt
< limit
)
4089 limit
= gpinfop
->g
.fdplt
;
4091 /* Determine the ranges of GOT offsets that we can use for each
4092 range of addressing modes. */
4093 odd
= _bfinfdpic_compute_got_alloc_data (&gpinfop
->got17m4
,
4100 (bfd_vma
)1 << (18-1));
4101 odd
= _bfinfdpic_compute_got_alloc_data (&gpinfop
->gothilo
,
4102 gpinfop
->got17m4
.min
,
4104 gpinfop
->got17m4
.max
,
4107 gpinfop
->g
.fdplt
- gpinfop
->got17m4
.fdplt
,
4108 (bfd_vma
)1 << (32-1));
4110 /* Now assign (most) GOT offsets. */
4111 htab_traverse (bfinfdpic_relocs_info (info
), _bfinfdpic_assign_got_entries
,
4114 bfinfdpic_got_section (info
)->size
= gpinfop
->gothilo
.max
4115 - gpinfop
->gothilo
.min
4116 /* If an odd word is the last word of the GOT, we don't need this
4117 word to be part of the GOT. */
4118 - (odd
+ 4 == gpinfop
->gothilo
.max
? 4 : 0);
4119 if (bfinfdpic_got_section (info
)->size
== 0)
4120 bfinfdpic_got_section (info
)->flags
|= SEC_EXCLUDE
;
4121 else if (bfinfdpic_got_section (info
)->size
== 12
4122 && ! elf_hash_table (info
)->dynamic_sections_created
)
4124 bfinfdpic_got_section (info
)->flags
|= SEC_EXCLUDE
;
4125 bfinfdpic_got_section (info
)->size
= 0;
4129 bfinfdpic_got_section (info
)->contents
=
4130 (bfd_byte
*) bfd_zalloc (dynobj
,
4131 bfinfdpic_got_section (info
)->size
);
4132 if (bfinfdpic_got_section (info
)->contents
== NULL
)
4136 if (elf_hash_table (info
)->dynamic_sections_created
)
4137 /* Subtract the number of lzplt entries, since those will generate
4138 relocations in the pltrel section. */
4139 bfinfdpic_gotrel_section (info
)->size
=
4140 (gpinfop
->g
.relocs
- gpinfop
->g
.lzplt
/ LZPLT_NORMAL_SIZE
)
4141 * get_elf_backend_data (output_bfd
)->s
->sizeof_rel
;
4143 BFD_ASSERT (gpinfop
->g
.relocs
== 0);
4144 if (bfinfdpic_gotrel_section (info
)->size
== 0)
4145 bfinfdpic_gotrel_section (info
)->flags
|= SEC_EXCLUDE
;
4148 bfinfdpic_gotrel_section (info
)->contents
=
4149 (bfd_byte
*) bfd_zalloc (dynobj
,
4150 bfinfdpic_gotrel_section (info
)->size
);
4151 if (bfinfdpic_gotrel_section (info
)->contents
== NULL
)
4155 bfinfdpic_gotfixup_section (info
)->size
= (gpinfop
->g
.fixups
+ 1) * 4;
4156 if (bfinfdpic_gotfixup_section (info
)->size
== 0)
4157 bfinfdpic_gotfixup_section (info
)->flags
|= SEC_EXCLUDE
;
4160 bfinfdpic_gotfixup_section (info
)->contents
=
4161 (bfd_byte
*) bfd_zalloc (dynobj
,
4162 bfinfdpic_gotfixup_section (info
)->size
);
4163 if (bfinfdpic_gotfixup_section (info
)->contents
== NULL
)
4167 if (elf_hash_table (info
)->dynamic_sections_created
)
4168 bfinfdpic_pltrel_section (info
)->size
=
4169 gpinfop
->g
.lzplt
/ LZPLT_NORMAL_SIZE
* get_elf_backend_data (output_bfd
)->s
->sizeof_rel
;
4170 if (bfinfdpic_pltrel_section (info
)->size
== 0)
4171 bfinfdpic_pltrel_section (info
)->flags
|= SEC_EXCLUDE
;
4174 bfinfdpic_pltrel_section (info
)->contents
=
4175 (bfd_byte
*) bfd_zalloc (dynobj
,
4176 bfinfdpic_pltrel_section (info
)->size
);
4177 if (bfinfdpic_pltrel_section (info
)->contents
== NULL
)
4181 /* Add 4 bytes for every block of at most 65535 lazy PLT entries,
4182 such that there's room for the additional instruction needed to
4183 call the resolver. Since _bfinfdpic_assign_got_entries didn't
4184 account for them, our block size is 4 bytes smaller than the real
4186 if (elf_hash_table (info
)->dynamic_sections_created
)
4188 bfinfdpic_plt_section (info
)->size
= gpinfop
->g
.lzplt
4189 + ((gpinfop
->g
.lzplt
+ (BFINFDPIC_LZPLT_BLOCK_SIZE
- 4) - LZPLT_NORMAL_SIZE
)
4190 / (BFINFDPIC_LZPLT_BLOCK_SIZE
- 4) * LZPLT_RESOLVER_EXTRA
);
4193 /* Reset it, such that _bfinfdpic_assign_plt_entries() can use it to
4194 actually assign lazy PLT entries addresses. */
4195 gpinfop
->g
.lzplt
= 0;
4197 /* Save information that we're going to need to generate GOT and PLT
4199 bfinfdpic_got_initial_offset (info
) = -gpinfop
->gothilo
.min
;
4201 if (get_elf_backend_data (output_bfd
)->want_got_sym
)
4202 elf_hash_table (info
)->hgot
->root
.u
.def
.value
4203 = bfinfdpic_got_initial_offset (info
);
4205 if (elf_hash_table (info
)->dynamic_sections_created
)
4206 bfinfdpic_plt_initial_offset (info
) =
4207 bfinfdpic_plt_section (info
)->size
;
4209 htab_traverse (bfinfdpic_relocs_info (info
), _bfinfdpic_assign_plt_entries
,
4212 /* Allocate the PLT section contents only after
4213 _bfinfdpic_assign_plt_entries has a chance to add the size of the
4214 non-lazy PLT entries. */
4215 if (bfinfdpic_plt_section (info
)->size
== 0)
4216 bfinfdpic_plt_section (info
)->flags
|= SEC_EXCLUDE
;
4219 bfinfdpic_plt_section (info
)->contents
=
4220 (bfd_byte
*) bfd_zalloc (dynobj
,
4221 bfinfdpic_plt_section (info
)->size
);
4222 if (bfinfdpic_plt_section (info
)->contents
== NULL
)
4229 /* Set the sizes of the dynamic sections. */
4232 elf32_bfinfdpic_size_dynamic_sections (bfd
*output_bfd
,
4233 struct bfd_link_info
*info
)
4235 struct elf_link_hash_table
*htab
;
4238 struct _bfinfdpic_dynamic_got_plt_info gpinfo
;
4240 htab
= elf_hash_table (info
);
4241 dynobj
= htab
->dynobj
;
4242 BFD_ASSERT (dynobj
!= NULL
);
4244 if (htab
->dynamic_sections_created
)
4246 /* Set the contents of the .interp section to the interpreter. */
4247 if (info
->executable
)
4249 s
= bfd_get_linker_section (dynobj
, ".interp");
4250 BFD_ASSERT (s
!= NULL
);
4251 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
4252 s
->contents
= (bfd_byte
*) ELF_DYNAMIC_INTERPRETER
;
4256 memset (&gpinfo
, 0, sizeof (gpinfo
));
4257 gpinfo
.g
.info
= info
;
4261 htab_t relocs
= bfinfdpic_relocs_info (info
);
4263 htab_traverse (relocs
, _bfinfdpic_resolve_final_relocs_info
, &relocs
);
4265 if (relocs
== bfinfdpic_relocs_info (info
))
4269 htab_traverse (bfinfdpic_relocs_info (info
), _bfinfdpic_count_got_plt_entries
,
4272 /* Allocate space to save the summary information, we're going to
4273 use it if we're doing relaxations. */
4274 bfinfdpic_dynamic_got_plt_info (info
) = bfd_alloc (dynobj
, sizeof (gpinfo
.g
));
4276 if (!_bfinfdpic_size_got_plt (output_bfd
, &gpinfo
))
4279 if (elf_hash_table (info
)->dynamic_sections_created
)
4281 if (bfinfdpic_got_section (info
)->size
)
4282 if (!_bfd_elf_add_dynamic_entry (info
, DT_PLTGOT
, 0))
4285 if (bfinfdpic_pltrel_section (info
)->size
)
4286 if (!_bfd_elf_add_dynamic_entry (info
, DT_PLTRELSZ
, 0)
4287 || !_bfd_elf_add_dynamic_entry (info
, DT_PLTREL
, DT_REL
)
4288 || !_bfd_elf_add_dynamic_entry (info
, DT_JMPREL
, 0))
4291 if (bfinfdpic_gotrel_section (info
)->size
)
4292 if (!_bfd_elf_add_dynamic_entry (info
, DT_REL
, 0)
4293 || !_bfd_elf_add_dynamic_entry (info
, DT_RELSZ
, 0)
4294 || !_bfd_elf_add_dynamic_entry (info
, DT_RELENT
,
4295 sizeof (Elf32_External_Rel
)))
4299 s
= bfd_get_linker_section (dynobj
, ".dynbss");
4300 if (s
&& s
->size
== 0)
4301 s
->flags
|= SEC_EXCLUDE
;
4303 s
= bfd_get_linker_section (dynobj
, ".rela.bss");
4304 if (s
&& s
->size
== 0)
4305 s
->flags
|= SEC_EXCLUDE
;
4311 elf32_bfinfdpic_always_size_sections (bfd
*output_bfd
,
4312 struct bfd_link_info
*info
)
4314 if (!info
->relocatable
)
4316 struct elf_link_hash_entry
*h
;
4318 /* Force a PT_GNU_STACK segment to be created. */
4319 if (! elf_tdata (output_bfd
)->stack_flags
)
4320 elf_tdata (output_bfd
)->stack_flags
= PF_R
| PF_W
| PF_X
;
4322 /* Define __stacksize if it's not defined yet. */
4323 h
= elf_link_hash_lookup (elf_hash_table (info
), "__stacksize",
4324 FALSE
, FALSE
, FALSE
);
4325 if (! h
|| h
->root
.type
!= bfd_link_hash_defined
4326 || h
->type
!= STT_OBJECT
4329 struct bfd_link_hash_entry
*bh
= NULL
;
4331 if (!(_bfd_generic_link_add_one_symbol
4332 (info
, output_bfd
, "__stacksize",
4333 BSF_GLOBAL
, bfd_abs_section_ptr
, DEFAULT_STACK_SIZE
,
4334 (const char *) NULL
, FALSE
,
4335 get_elf_backend_data (output_bfd
)->collect
, &bh
)))
4338 h
= (struct elf_link_hash_entry
*) bh
;
4340 h
->type
= STT_OBJECT
;
4347 /* Check whether any of the relocations was optimized away, and
4348 subtract it from the relocation or fixup count. */
4350 _bfinfdpic_check_discarded_relocs (bfd
*abfd
, asection
*sec
,
4351 struct bfd_link_info
*info
,
4352 bfd_boolean
*changed
)
4354 Elf_Internal_Shdr
*symtab_hdr
;
4355 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4356 Elf_Internal_Rela
*rel
, *erel
;
4358 if ((sec
->flags
& SEC_RELOC
) == 0
4359 || sec
->reloc_count
== 0)
4362 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4363 sym_hashes
= elf_sym_hashes (abfd
);
4364 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/sizeof(Elf32_External_Sym
);
4365 if (!elf_bad_symtab (abfd
))
4366 sym_hashes_end
-= symtab_hdr
->sh_info
;
4368 rel
= elf_section_data (sec
)->relocs
;
4370 /* Now examine each relocation. */
4371 for (erel
= rel
+ sec
->reloc_count
; rel
< erel
; rel
++)
4373 struct elf_link_hash_entry
*h
;
4374 unsigned long r_symndx
;
4375 struct bfinfdpic_relocs_info
*picrel
;
4376 struct _bfinfdpic_dynamic_got_info
*dinfo
;
4378 if (ELF32_R_TYPE (rel
->r_info
) != R_BFIN_BYTE4_DATA
4379 && ELF32_R_TYPE (rel
->r_info
) != R_BFIN_FUNCDESC
)
4382 if (_bfd_elf_section_offset (sec
->output_section
->owner
,
4383 info
, sec
, rel
->r_offset
)
4387 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4388 if (r_symndx
< symtab_hdr
->sh_info
)
4392 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4393 while (h
->root
.type
== bfd_link_hash_indirect
4394 || h
->root
.type
== bfd_link_hash_warning
)
4395 h
= (struct elf_link_hash_entry
*)h
->root
.u
.i
.link
;
4399 picrel
= bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info
),
4401 rel
->r_addend
, NO_INSERT
);
4403 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info (info
),
4405 rel
->r_addend
, NO_INSERT
);
4411 dinfo
= bfinfdpic_dynamic_got_plt_info (info
);
4413 _bfinfdpic_count_relocs_fixups (picrel
, dinfo
, TRUE
);
4414 if (ELF32_R_TYPE (rel
->r_info
) == R_BFIN_BYTE4_DATA
)
4416 else /* we know (ELF32_R_TYPE (rel->r_info) == R_BFIN_FUNCDESC) */
4418 _bfinfdpic_count_relocs_fixups (picrel
, dinfo
, FALSE
);
4425 bfinfdpic_elf_discard_info (bfd
*ibfd
,
4426 struct elf_reloc_cookie
*cookie ATTRIBUTE_UNUSED
,
4427 struct bfd_link_info
*info
)
4429 bfd_boolean changed
= FALSE
;
4433 /* Account for relaxation of .eh_frame section. */
4434 for (s
= ibfd
->sections
; s
; s
= s
->next
)
4435 if (s
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
)
4437 if (!_bfinfdpic_check_discarded_relocs (ibfd
, s
, info
, &changed
))
4439 obfd
= s
->output_section
->owner
;
4444 struct _bfinfdpic_dynamic_got_plt_info gpinfo
;
4446 memset (&gpinfo
, 0, sizeof (gpinfo
));
4447 memcpy (&gpinfo
.g
, bfinfdpic_dynamic_got_plt_info (info
),
4450 /* Clear GOT and PLT assignments. */
4451 htab_traverse (bfinfdpic_relocs_info (info
),
4452 _bfinfdpic_reset_got_plt_entries
,
4455 if (!_bfinfdpic_size_got_plt (obfd
, &gpinfo
))
4463 elf32_bfinfdpic_modify_program_headers (bfd
*output_bfd
,
4464 struct bfd_link_info
*info
)
4466 struct elf_obj_tdata
*tdata
= elf_tdata (output_bfd
);
4467 struct elf_segment_map
*m
;
4468 Elf_Internal_Phdr
*p
;
4470 /* objcopy and strip preserve what's already there using
4471 elf32_bfinfdpic_copy_private_bfd_data (). */
4475 for (p
= tdata
->phdr
, m
= tdata
->segment_map
; m
!= NULL
; m
= m
->next
, p
++)
4476 if (m
->p_type
== PT_GNU_STACK
)
4481 struct elf_link_hash_entry
*h
;
4483 /* Obtain the pointer to the __stacksize symbol. */
4484 h
= elf_link_hash_lookup (elf_hash_table (info
), "__stacksize",
4485 FALSE
, FALSE
, FALSE
);
4488 while (h
->root
.type
== bfd_link_hash_indirect
4489 || h
->root
.type
== bfd_link_hash_warning
)
4490 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4491 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
4494 /* Set the header p_memsz from the symbol value. We
4495 intentionally ignore the symbol section. */
4496 if (h
&& h
->root
.type
== bfd_link_hash_defined
)
4497 p
->p_memsz
= h
->root
.u
.def
.value
;
4499 p
->p_memsz
= DEFAULT_STACK_SIZE
;
4508 elf32_bfinfdpic_finish_dynamic_sections (bfd
*output_bfd
,
4509 struct bfd_link_info
*info
)
4514 dynobj
= elf_hash_table (info
)->dynobj
;
4516 if (bfinfdpic_got_section (info
))
4518 BFD_ASSERT (bfinfdpic_gotrel_section (info
)->size
4519 == (bfinfdpic_gotrel_section (info
)->reloc_count
4520 * sizeof (Elf32_External_Rel
)));
4522 if (bfinfdpic_gotfixup_section (info
))
4524 struct elf_link_hash_entry
*hgot
= elf_hash_table (info
)->hgot
;
4525 bfd_vma got_value
= hgot
->root
.u
.def
.value
4526 + hgot
->root
.u
.def
.section
->output_section
->vma
4527 + hgot
->root
.u
.def
.section
->output_offset
;
4529 _bfinfdpic_add_rofixup (output_bfd
, bfinfdpic_gotfixup_section (info
),
4532 if (bfinfdpic_gotfixup_section (info
)->size
4533 != (bfinfdpic_gotfixup_section (info
)->reloc_count
* 4))
4535 (*_bfd_error_handler
)
4536 ("LINKER BUG: .rofixup section size mismatch");
4541 if (elf_hash_table (info
)->dynamic_sections_created
)
4543 BFD_ASSERT (bfinfdpic_pltrel_section (info
)->size
4544 == (bfinfdpic_pltrel_section (info
)->reloc_count
4545 * sizeof (Elf32_External_Rel
)));
4548 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
4550 if (elf_hash_table (info
)->dynamic_sections_created
)
4552 Elf32_External_Dyn
* dyncon
;
4553 Elf32_External_Dyn
* dynconend
;
4555 BFD_ASSERT (sdyn
!= NULL
);
4557 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
4558 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
4560 for (; dyncon
< dynconend
; dyncon
++)
4562 Elf_Internal_Dyn dyn
;
4564 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
4572 dyn
.d_un
.d_ptr
= bfinfdpic_got_section (info
)->output_section
->vma
4573 + bfinfdpic_got_section (info
)->output_offset
4574 + bfinfdpic_got_initial_offset (info
);
4575 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4579 dyn
.d_un
.d_ptr
= bfinfdpic_pltrel_section (info
)
4580 ->output_section
->vma
4581 + bfinfdpic_pltrel_section (info
)->output_offset
;
4582 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4586 dyn
.d_un
.d_val
= bfinfdpic_pltrel_section (info
)->size
;
4587 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4596 /* Adjust a symbol defined by a dynamic object and referenced by a
4600 elf32_bfinfdpic_adjust_dynamic_symbol (struct bfd_link_info
*info
,
4601 struct elf_link_hash_entry
*h
)
4605 dynobj
= elf_hash_table (info
)->dynobj
;
4607 /* Make sure we know what is going on here. */
4608 BFD_ASSERT (dynobj
!= NULL
4609 && (h
->u
.weakdef
!= NULL
4612 && !h
->def_regular
)));
4614 /* If this is a weak symbol, and there is a real definition, the
4615 processor independent code will have arranged for us to see the
4616 real definition first, and we can just use the same value. */
4617 if (h
->u
.weakdef
!= NULL
)
4619 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
4620 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
4621 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
4622 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
4628 /* Perform any actions needed for dynamic symbols. */
4631 elf32_bfinfdpic_finish_dynamic_symbol
4632 (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4633 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4634 struct elf_link_hash_entry
*h ATTRIBUTE_UNUSED
,
4635 Elf_Internal_Sym
*sym ATTRIBUTE_UNUSED
)
4640 /* Decide whether to attempt to turn absptr or lsda encodings in
4641 shared libraries into pcrel within the given input section. */
4644 bfinfdpic_elf_use_relative_eh_frame
4645 (bfd
*input_bfd ATTRIBUTE_UNUSED
,
4646 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4647 asection
*eh_frame_section ATTRIBUTE_UNUSED
)
4649 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
4653 /* Adjust the contents of an eh_frame_hdr section before they're output. */
4656 bfinfdpic_elf_encode_eh_address (bfd
*abfd
,
4657 struct bfd_link_info
*info
,
4658 asection
*osec
, bfd_vma offset
,
4659 asection
*loc_sec
, bfd_vma loc_offset
,
4662 struct elf_link_hash_entry
*h
;
4664 h
= elf_hash_table (info
)->hgot
;
4665 BFD_ASSERT (h
&& h
->root
.type
== bfd_link_hash_defined
);
4667 if (! h
|| (_bfinfdpic_osec_to_segment (abfd
, osec
)
4668 == _bfinfdpic_osec_to_segment (abfd
, loc_sec
->output_section
)))
4669 return _bfd_elf_encode_eh_address (abfd
, info
, osec
, offset
,
4670 loc_sec
, loc_offset
, encoded
);
4672 BFD_ASSERT (_bfinfdpic_osec_to_segment (abfd
, osec
)
4673 == (_bfinfdpic_osec_to_segment
4674 (abfd
, h
->root
.u
.def
.section
->output_section
)));
4676 *encoded
= osec
->vma
+ offset
4677 - (h
->root
.u
.def
.value
4678 + h
->root
.u
.def
.section
->output_section
->vma
4679 + h
->root
.u
.def
.section
->output_offset
);
4681 return DW_EH_PE_datarel
| DW_EH_PE_sdata4
;
4686 /* Look through the relocs for a section during the first phase.
4688 Besides handling virtual table relocs for gc, we have to deal with
4689 all sorts of PIC-related relocations. We describe below the
4690 general plan on how to handle such relocations, even though we only
4691 collect information at this point, storing them in hash tables for
4692 perusal of later passes.
4694 32 relocations are propagated to the linker output when creating
4695 position-independent output. LO16 and HI16 relocations are not
4696 supposed to be encountered in this case.
4698 LABEL16 should always be resolvable by the linker, since it's only
4701 LABEL24, on the other hand, is used by calls. If it turns out that
4702 the target of a call is a dynamic symbol, a PLT entry must be
4703 created for it, which triggers the creation of a private function
4704 descriptor and, unless lazy binding is disabled, a lazy PLT entry.
4706 GPREL relocations require the referenced symbol to be in the same
4707 segment as _gp, but this can only be checked later.
4709 All GOT, GOTOFF and FUNCDESC relocations require a .got section to
4710 exist. LABEL24 might as well, since it may require a PLT entry,
4711 that will require a got.
4713 Non-FUNCDESC GOT relocations require a GOT entry to be created
4714 regardless of whether the symbol is dynamic. However, since a
4715 global symbol that turns out to not be exported may have the same
4716 address of a non-dynamic symbol, we don't assign GOT entries at
4717 this point, such that we can share them in this case. A relocation
4718 for the GOT entry always has to be created, be it to offset a
4719 private symbol by the section load address, be it to get the symbol
4720 resolved dynamically.
4722 FUNCDESC GOT relocations require a GOT entry to be created, and
4723 handled as if a FUNCDESC relocation was applied to the GOT entry in
4726 FUNCDESC relocations referencing a symbol that turns out to NOT be
4727 dynamic cause a private function descriptor to be created. The
4728 FUNCDESC relocation then decays to a 32 relocation that points at
4729 the private descriptor. If the symbol is dynamic, the FUNCDESC
4730 relocation is propagated to the linker output, such that the
4731 dynamic linker creates the canonical descriptor, pointing to the
4732 dynamically-resolved definition of the function.
4734 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic
4735 symbols that are assigned to the same segment as the GOT, but we
4736 can only check this later, after we know the complete set of
4737 symbols defined and/or exported.
4739 FUNCDESC GOTOFF relocations require a function descriptor to be
4740 created and, unless lazy binding is disabled or the symbol is not
4741 dynamic, a lazy PLT entry. Since we can't tell at this point
4742 whether a symbol is going to be dynamic, we have to decide later
4743 whether to create a lazy PLT entry or bind the descriptor directly
4744 to the private function.
4746 FUNCDESC_VALUE relocations are not supposed to be present in object
4747 files, but they may very well be simply propagated to the linker
4748 output, since they have no side effect.
4751 A function descriptor always requires a FUNCDESC_VALUE relocation.
4752 Whether it's in .plt.rel or not depends on whether lazy binding is
4753 enabled and on whether the referenced symbol is dynamic.
4755 The existence of a lazy PLT requires the resolverStub lazy PLT
4756 entry to be present.
4759 As for assignment of GOT, PLT and lazy PLT entries, and private
4760 descriptors, we might do them all sequentially, but we can do
4761 better than that. For example, we can place GOT entries and
4762 private function descriptors referenced using 12-bit operands
4763 closer to the PIC register value, such that these relocations don't
4764 overflow. Those that are only referenced with LO16 relocations
4765 could come next, but we may as well place PLT-required function
4766 descriptors in the 12-bit range to make them shorter. Symbols
4767 referenced with LO16/HI16 may come next, but we may place
4768 additional function descriptors in the 16-bit range if we can
4769 reliably tell that we've already placed entries that are ever
4770 referenced with only LO16. PLT entries are therefore generated as
4771 small as possible, while not introducing relocation overflows in
4772 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be
4773 generated before or after PLT entries, but not intermingled with
4774 them, such that we can have more lazy PLT entries in range for a
4775 branch to the resolverStub. The resolverStub should be emitted at
4776 the most distant location from the first lazy PLT entry such that
4777 it's still in range for a branch, or closer, if there isn't a need
4778 for so many lazy PLT entries. Additional lazy PLT entries may be
4779 emitted after the resolverStub, as long as branches are still in
4780 range. If the branch goes out of range, longer lazy PLT entries
4783 We could further optimize PLT and lazy PLT entries by giving them
4784 priority in assignment to closer-to-gr17 locations depending on the
4785 number of occurrences of references to them (assuming a function
4786 that's called more often is more important for performance, so its
4787 PLT entry should be faster), or taking hints from the compiler.
4788 Given infinite time and money... :-) */
4791 bfinfdpic_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4792 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4794 Elf_Internal_Shdr
*symtab_hdr
;
4795 struct elf_link_hash_entry
**sym_hashes
;
4796 const Elf_Internal_Rela
*rel
;
4797 const Elf_Internal_Rela
*rel_end
;
4799 struct bfinfdpic_relocs_info
*picrel
;
4801 if (info
->relocatable
)
4804 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4805 sym_hashes
= elf_sym_hashes (abfd
);
4807 dynobj
= elf_hash_table (info
)->dynobj
;
4808 rel_end
= relocs
+ sec
->reloc_count
;
4809 for (rel
= relocs
; rel
< rel_end
; rel
++)
4811 struct elf_link_hash_entry
*h
;
4812 unsigned long r_symndx
;
4814 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4815 if (r_symndx
< symtab_hdr
->sh_info
)
4818 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4820 switch (ELF32_R_TYPE (rel
->r_info
))
4822 case R_BFIN_GOT17M4
:
4825 case R_BFIN_FUNCDESC_GOT17M4
:
4826 case R_BFIN_FUNCDESC_GOTHI
:
4827 case R_BFIN_FUNCDESC_GOTLO
:
4828 case R_BFIN_GOTOFF17M4
:
4829 case R_BFIN_GOTOFFHI
:
4830 case R_BFIN_GOTOFFLO
:
4831 case R_BFIN_FUNCDESC_GOTOFF17M4
:
4832 case R_BFIN_FUNCDESC_GOTOFFHI
:
4833 case R_BFIN_FUNCDESC_GOTOFFLO
:
4834 case R_BFIN_FUNCDESC
:
4835 case R_BFIN_FUNCDESC_VALUE
:
4836 if (! IS_FDPIC (abfd
))
4839 case R_BFIN_PCREL24
:
4840 case R_BFIN_PCREL24_JUMP_L
:
4841 case R_BFIN_BYTE4_DATA
:
4842 if (IS_FDPIC (abfd
) && ! dynobj
)
4844 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
4845 if (! _bfin_create_got_section (abfd
, info
))
4848 if (! IS_FDPIC (abfd
))
4855 if (h
->dynindx
== -1)
4856 switch (ELF_ST_VISIBILITY (h
->other
))
4862 bfd_elf_link_record_dynamic_symbol (info
, h
);
4866 = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info
),
4868 rel
->r_addend
, INSERT
);
4871 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
4872 (info
), abfd
, r_symndx
,
4873 rel
->r_addend
, INSERT
);
4883 switch (ELF32_R_TYPE (rel
->r_info
))
4885 case R_BFIN_PCREL24
:
4886 case R_BFIN_PCREL24_JUMP_L
:
4887 if (IS_FDPIC (abfd
))
4891 case R_BFIN_FUNCDESC_VALUE
:
4892 picrel
->relocsfdv
++;
4893 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
4897 case R_BFIN_BYTE4_DATA
:
4898 if (! IS_FDPIC (abfd
))
4902 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
4906 case R_BFIN_GOT17M4
:
4915 case R_BFIN_FUNCDESC_GOT17M4
:
4916 picrel
->fdgot17m4
++;
4919 case R_BFIN_FUNCDESC_GOTHI
:
4920 case R_BFIN_FUNCDESC_GOTLO
:
4921 picrel
->fdgothilo
++;
4924 case R_BFIN_GOTOFF17M4
:
4925 case R_BFIN_GOTOFFHI
:
4926 case R_BFIN_GOTOFFLO
:
4930 case R_BFIN_FUNCDESC_GOTOFF17M4
:
4931 picrel
->fdgoff17m4
++;
4934 case R_BFIN_FUNCDESC_GOTOFFHI
:
4935 case R_BFIN_FUNCDESC_GOTOFFLO
:
4936 picrel
->fdgoffhilo
++;
4939 case R_BFIN_FUNCDESC
:
4944 /* This relocation describes the C++ object vtable hierarchy.
4945 Reconstruct it for later use during GC. */
4946 case R_BFIN_GNU_VTINHERIT
:
4947 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4951 /* This relocation describes which C++ vtable entries are actually
4952 used. Record for later use during GC. */
4953 case R_BFIN_GNU_VTENTRY
:
4954 BFD_ASSERT (h
!= NULL
);
4956 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4960 case R_BFIN_HUIMM16
:
4961 case R_BFIN_LUIMM16
:
4962 case R_BFIN_PCREL12_JUMP_S
:
4963 case R_BFIN_PCREL10
:
4968 (*_bfd_error_handler
)
4969 (_("%B: unsupported relocation type %i"),
4970 abfd
, ELF32_R_TYPE (rel
->r_info
));
4978 /* Set the right machine number for a Blackfin ELF file. */
4981 elf32_bfin_object_p (bfd
*abfd
)
4983 bfd_default_set_arch_mach (abfd
, bfd_arch_bfin
, 0);
4984 return (((elf_elfheader (abfd
)->e_flags
& EF_BFIN_FDPIC
) != 0)
4985 == (IS_FDPIC (abfd
)));
4989 elf32_bfin_set_private_flags (bfd
* abfd
, flagword flags
)
4991 elf_elfheader (abfd
)->e_flags
= flags
;
4992 elf_flags_init (abfd
) = TRUE
;
4996 /* Copy backend specific data from one object module to another. */
4999 bfin_elf_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
5001 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
5002 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
5005 BFD_ASSERT (!elf_flags_init (obfd
)
5006 || elf_elfheader (obfd
)->e_flags
== elf_elfheader (ibfd
)->e_flags
);
5008 elf_elfheader (obfd
)->e_flags
= elf_elfheader (ibfd
)->e_flags
;
5009 elf_flags_init (obfd
) = TRUE
;
5011 /* Copy object attributes. */
5012 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
5018 elf32_bfinfdpic_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
5022 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
5023 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
5026 if (! bfin_elf_copy_private_bfd_data (ibfd
, obfd
))
5029 if (! elf_tdata (ibfd
) || ! elf_tdata (ibfd
)->phdr
5030 || ! elf_tdata (obfd
) || ! elf_tdata (obfd
)->phdr
)
5033 /* Copy the stack size. */
5034 for (i
= 0; i
< elf_elfheader (ibfd
)->e_phnum
; i
++)
5035 if (elf_tdata (ibfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
5037 Elf_Internal_Phdr
*iphdr
= &elf_tdata (ibfd
)->phdr
[i
];
5039 for (i
= 0; i
< elf_elfheader (obfd
)->e_phnum
; i
++)
5040 if (elf_tdata (obfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
5042 memcpy (&elf_tdata (obfd
)->phdr
[i
], iphdr
, sizeof (*iphdr
));
5044 /* Rewrite the phdrs, since we're only called after they
5045 were first written. */
5046 if (bfd_seek (obfd
, (bfd_signed_vma
) get_elf_backend_data (obfd
)
5047 ->s
->sizeof_ehdr
, SEEK_SET
) != 0
5048 || get_elf_backend_data (obfd
)->s
5049 ->write_out_phdrs (obfd
, elf_tdata (obfd
)->phdr
,
5050 elf_elfheader (obfd
)->e_phnum
) != 0)
5062 /* Display the flags field. */
5064 elf32_bfin_print_private_bfd_data (bfd
* abfd
, void * ptr
)
5066 FILE *file
= (FILE *) ptr
;
5069 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
5071 /* Print normal ELF private data. */
5072 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
5074 flags
= elf_elfheader (abfd
)->e_flags
;
5076 /* xgettext:c-format */
5077 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
5079 if (flags
& EF_BFIN_PIC
)
5080 fprintf (file
, " -fpic");
5082 if (flags
& EF_BFIN_FDPIC
)
5083 fprintf (file
, " -mfdpic");
5090 /* Merge backend specific data from an object file to the output
5091 object file when linking. */
5094 elf32_bfin_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
5096 flagword old_flags
, new_flags
;
5097 bfd_boolean error
= FALSE
;
5099 new_flags
= elf_elfheader (ibfd
)->e_flags
;
5100 old_flags
= elf_elfheader (obfd
)->e_flags
;
5102 if (new_flags
& EF_BFIN_FDPIC
)
5103 new_flags
&= ~EF_BFIN_PIC
;
5108 (*_bfd_error_handler
) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s",
5109 old_flags
, new_flags
, elf_flags_init (obfd
) ? "yes" : "no",
5110 bfd_get_filename (ibfd
));
5112 if (!elf_flags_init (obfd
)) /* First call, no flags set. */
5114 elf_flags_init (obfd
) = TRUE
;
5115 elf_elfheader (obfd
)->e_flags
= new_flags
;
5118 if (((new_flags
& EF_BFIN_FDPIC
) == 0) != (! IS_FDPIC (obfd
)))
5121 if (IS_FDPIC (obfd
))
5122 (*_bfd_error_handler
)
5123 (_("%s: cannot link non-fdpic object file into fdpic executable"),
5124 bfd_get_filename (ibfd
));
5126 (*_bfd_error_handler
)
5127 (_("%s: cannot link fdpic object file into non-fdpic executable"),
5128 bfd_get_filename (ibfd
));
5132 bfd_set_error (bfd_error_bad_value
);
5137 /* bfin ELF linker hash entry. */
5139 struct bfin_link_hash_entry
5141 struct elf_link_hash_entry root
;
5143 /* Number of PC relative relocs copied for this symbol. */
5144 struct bfin_pcrel_relocs_copied
*pcrel_relocs_copied
;
5147 /* bfin ELF linker hash table. */
5149 struct bfin_link_hash_table
5151 struct elf_link_hash_table root
;
5153 /* Small local sym cache. */
5154 struct sym_cache sym_cache
;
5157 #define bfin_hash_entry(ent) ((struct bfin_link_hash_entry *) (ent))
5159 static struct bfd_hash_entry
*
5160 bfin_link_hash_newfunc (struct bfd_hash_entry
*entry
,
5161 struct bfd_hash_table
*table
, const char *string
)
5163 struct bfd_hash_entry
*ret
= entry
;
5165 /* Allocate the structure if it has not already been allocated by a
5168 ret
= bfd_hash_allocate (table
, sizeof (struct bfin_link_hash_entry
));
5172 /* Call the allocation method of the superclass. */
5173 ret
= _bfd_elf_link_hash_newfunc (ret
, table
, string
);
5175 bfin_hash_entry (ret
)->pcrel_relocs_copied
= NULL
;
5180 /* Create an bfin ELF linker hash table. */
5182 static struct bfd_link_hash_table
*
5183 bfin_link_hash_table_create (bfd
* abfd
)
5185 struct bfin_link_hash_table
*ret
;
5186 bfd_size_type amt
= sizeof (struct bfin_link_hash_table
);
5188 ret
= bfd_zalloc (abfd
, amt
);
5192 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
5193 bfin_link_hash_newfunc
,
5194 sizeof (struct elf_link_hash_entry
),
5201 ret
->sym_cache
.abfd
= NULL
;
5203 return &ret
->root
.root
;
5206 /* The size in bytes of an entry in the procedure linkage table. */
5208 /* Finish up the dynamic sections. */
5211 bfin_finish_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
5212 struct bfd_link_info
*info
)
5217 dynobj
= elf_hash_table (info
)->dynobj
;
5219 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
5221 if (elf_hash_table (info
)->dynamic_sections_created
)
5223 Elf32_External_Dyn
*dyncon
, *dynconend
;
5225 BFD_ASSERT (sdyn
!= NULL
);
5227 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
5228 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
5229 for (; dyncon
< dynconend
; dyncon
++)
5231 Elf_Internal_Dyn dyn
;
5233 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
5241 /* Finish up dynamic symbol handling. We set the contents of various
5242 dynamic sections here. */
5245 bfin_finish_dynamic_symbol (bfd
* output_bfd
,
5246 struct bfd_link_info
*info
,
5247 struct elf_link_hash_entry
*h
,
5248 Elf_Internal_Sym
* sym
)
5252 dynobj
= elf_hash_table (info
)->dynobj
;
5254 if (h
->got
.offset
!= (bfd_vma
) - 1)
5258 Elf_Internal_Rela rela
;
5261 /* This symbol has an entry in the global offset table.
5264 sgot
= bfd_get_linker_section (dynobj
, ".got");
5265 srela
= bfd_get_linker_section (dynobj
, ".rela.got");
5266 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
5268 rela
.r_offset
= (sgot
->output_section
->vma
5269 + sgot
->output_offset
5270 + (h
->got
.offset
& ~(bfd_vma
) 1));
5272 /* If this is a -Bsymbolic link, and the symbol is defined
5273 locally, we just want to emit a RELATIVE reloc. Likewise if
5274 the symbol was forced to be local because of a version file.
5275 The entry in the global offset table will already have been
5276 initialized in the relocate_section function. */
5279 || h
->dynindx
== -1 || h
->forced_local
) && h
->def_regular
)
5281 (*_bfd_error_handler
) (_("*** check this relocation %s"),
5283 rela
.r_info
= ELF32_R_INFO (0, R_BFIN_PCREL24
);
5284 rela
.r_addend
= bfd_get_signed_32 (output_bfd
,
5288 offset
& ~(bfd_vma
) 1)));
5292 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
5293 sgot
->contents
+ (h
->got
.offset
& ~(bfd_vma
) 1));
5294 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_BFIN_GOT
);
5298 loc
= srela
->contents
;
5299 loc
+= srela
->reloc_count
++ * sizeof (Elf32_External_Rela
);
5300 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
5307 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
5308 if (strcmp (h
->root
.root
.string
, "__DYNAMIC") == 0
5309 || h
== elf_hash_table (info
)->hgot
)
5310 sym
->st_shndx
= SHN_ABS
;
5315 /* Adjust a symbol defined by a dynamic object and referenced by a
5316 regular object. The current definition is in some section of the
5317 dynamic object, but we're not including those sections. We have to
5318 change the definition to something the rest of the link can
5322 bfin_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5323 struct elf_link_hash_entry
*h
)
5327 unsigned int power_of_two
;
5329 dynobj
= elf_hash_table (info
)->dynobj
;
5331 /* Make sure we know what is going on here. */
5332 BFD_ASSERT (dynobj
!= NULL
5334 || h
->u
.weakdef
!= NULL
5335 || (h
->def_dynamic
&& h
->ref_regular
&& !h
->def_regular
)));
5337 /* If this is a function, put it in the procedure linkage table. We
5338 will fill in the contents of the procedure linkage table later,
5339 when we know the address of the .got section. */
5340 if (h
->type
== STT_FUNC
|| h
->needs_plt
)
5345 /* If this is a weak symbol, and there is a real definition, the
5346 processor independent code will have arranged for us to see the
5347 real definition first, and we can just use the same value. */
5348 if (h
->u
.weakdef
!= NULL
)
5350 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5351 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5352 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5353 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5357 /* This is a reference to a symbol defined by a dynamic object which
5358 is not a function. */
5360 /* If we are creating a shared library, we must presume that the
5361 only references to the symbol are via the global offset table.
5362 For such cases we need not do anything here; the relocations will
5363 be handled correctly by relocate_section. */
5367 /* We must allocate the symbol in our .dynbss section, which will
5368 become part of the .bss section of the executable. There will be
5369 an entry for this symbol in the .dynsym section. The dynamic
5370 object will contain position independent code, so all references
5371 from the dynamic object to this symbol will go through the global
5372 offset table. The dynamic linker will use the .dynsym entry to
5373 determine the address it must put in the global offset table, so
5374 both the dynamic object and the regular object will refer to the
5375 same memory location for the variable. */
5377 s
= bfd_get_linker_section (dynobj
, ".dynbss");
5378 BFD_ASSERT (s
!= NULL
);
5380 /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
5381 copy the initial value out of the dynamic object and into the
5382 runtime process image. We need to remember the offset into the
5383 .rela.bss section we are going to use. */
5384 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
5388 srel
= bfd_get_linker_section (dynobj
, ".rela.bss");
5389 BFD_ASSERT (srel
!= NULL
);
5390 srel
->size
+= sizeof (Elf32_External_Rela
);
5394 /* We need to figure out the alignment required for this symbol. I
5395 have no idea how ELF linkers handle this. */
5396 power_of_two
= bfd_log2 (h
->size
);
5397 if (power_of_two
> 3)
5400 /* Apply the required alignment. */
5401 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
5402 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
5404 if (!bfd_set_section_alignment (dynobj
, s
, power_of_two
))
5408 /* Define the symbol as being at this point in the section. */
5409 h
->root
.u
.def
.section
= s
;
5410 h
->root
.u
.def
.value
= s
->size
;
5412 /* Increment the section size to make room for the symbol. */
5418 /* The bfin linker needs to keep track of the number of relocs that it
5419 decides to copy in check_relocs for each symbol. This is so that it
5420 can discard PC relative relocs if it doesn't need them when linking
5421 with -Bsymbolic. We store the information in a field extending the
5422 regular ELF linker hash table. */
5424 /* This structure keeps track of the number of PC relative relocs we have
5425 copied for a given symbol. */
5427 struct bfin_pcrel_relocs_copied
5430 struct bfin_pcrel_relocs_copied
*next
;
5431 /* A section in dynobj. */
5433 /* Number of relocs copied in this section. */
5434 bfd_size_type count
;
5437 /* This function is called via elf_link_hash_traverse if we are
5438 creating a shared object. In the -Bsymbolic case it discards the
5439 space allocated to copy PC relative relocs against symbols which
5440 are defined in regular objects. For the normal shared case, it
5441 discards space for pc-relative relocs that have become local due to
5442 symbol visibility changes. We allocated space for them in the
5443 check_relocs routine, but we won't fill them in in the
5444 relocate_section routine.
5446 We also check whether any of the remaining relocations apply
5447 against a readonly section, and set the DF_TEXTREL flag in this
5451 bfin_discard_copies (struct elf_link_hash_entry
*h
, void * inf
)
5453 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5454 struct bfin_pcrel_relocs_copied
*s
;
5456 if (!h
->def_regular
|| (!info
->symbolic
&& !h
->forced_local
))
5458 if ((info
->flags
& DF_TEXTREL
) == 0)
5460 /* Look for relocations against read-only sections. */
5461 for (s
= bfin_hash_entry (h
)->pcrel_relocs_copied
;
5462 s
!= NULL
; s
= s
->next
)
5463 if ((s
->section
->flags
& SEC_READONLY
) != 0)
5465 info
->flags
|= DF_TEXTREL
;
5473 for (s
= bfin_hash_entry (h
)->pcrel_relocs_copied
;
5474 s
!= NULL
; s
= s
->next
)
5475 s
->section
->size
-= s
->count
* sizeof (Elf32_External_Rela
);
5481 bfin_size_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
5482 struct bfd_link_info
*info
)
5488 dynobj
= elf_hash_table (info
)->dynobj
;
5489 BFD_ASSERT (dynobj
!= NULL
);
5491 if (elf_hash_table (info
)->dynamic_sections_created
)
5493 /* Set the contents of the .interp section to the interpreter. */
5494 if (info
->executable
)
5496 s
= bfd_get_linker_section (dynobj
, ".interp");
5497 BFD_ASSERT (s
!= NULL
);
5498 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
5499 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
5504 /* We may have created entries in the .rela.got section.
5505 However, if we are not creating the dynamic sections, we will
5506 not actually use these entries. Reset the size of .rela.got,
5507 which will cause it to get stripped from the output file
5509 s
= bfd_get_linker_section (dynobj
, ".rela.got");
5514 /* If this is a -Bsymbolic shared link, then we need to discard all
5515 PC relative relocs against symbols defined in a regular object.
5516 For the normal shared case we discard the PC relative relocs
5517 against symbols that have become local due to visibility changes.
5518 We allocated space for them in the check_relocs routine, but we
5519 will not fill them in in the relocate_section routine. */
5521 elf_link_hash_traverse (elf_hash_table (info
),
5522 bfin_discard_copies
, info
);
5524 /* The check_relocs and adjust_dynamic_symbol entry points have
5525 determined the sizes of the various dynamic sections. Allocate
5528 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
5533 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
5536 /* It's OK to base decisions on the section name, because none
5537 of the dynobj section names depend upon the input files. */
5538 name
= bfd_get_section_name (dynobj
, s
);
5542 if (CONST_STRNEQ (name
, ".rela"))
5546 /* If we don't need this section, strip it from the
5547 output file. This is mostly to handle .rela.bss and
5548 .rela.plt. We must create both sections in
5549 create_dynamic_sections, because they must be created
5550 before the linker maps input sections to output
5551 sections. The linker does that before
5552 adjust_dynamic_symbol is called, and it is that
5553 function which decides whether anything needs to go
5554 into these sections. */
5561 /* We use the reloc_count field as a counter if we need
5562 to copy relocs into the output file. */
5566 else if (! CONST_STRNEQ (name
, ".got"))
5568 /* It's not one of our sections, so don't allocate space. */
5574 s
->flags
|= SEC_EXCLUDE
;
5578 /* Allocate memory for the section contents. */
5579 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
5580 Unused entries should be reclaimed before the section's contents
5581 are written out, but at the moment this does not happen. Thus in
5582 order to prevent writing out garbage, we initialise the section's
5583 contents to zero. */
5584 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
5585 if (s
->contents
== NULL
&& s
->size
!= 0)
5589 if (elf_hash_table (info
)->dynamic_sections_created
)
5591 /* Add some entries to the .dynamic section. We fill in the
5592 values later, in bfin_finish_dynamic_sections, but we
5593 must add the entries now so that we get the correct size for
5594 the .dynamic section. The DT_DEBUG entry is filled in by the
5595 dynamic linker and used by the debugger. */
5596 #define add_dynamic_entry(TAG, VAL) \
5597 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5601 if (!add_dynamic_entry (DT_DEBUG
, 0))
5608 if (!add_dynamic_entry (DT_RELA
, 0)
5609 || !add_dynamic_entry (DT_RELASZ
, 0)
5610 || !add_dynamic_entry (DT_RELAENT
,
5611 sizeof (Elf32_External_Rela
)))
5615 if ((info
->flags
& DF_TEXTREL
) != 0)
5617 if (!add_dynamic_entry (DT_TEXTREL
, 0))
5621 #undef add_dynamic_entry
5626 /* Given a .data section and a .emreloc in-memory section, store
5627 relocation information into the .emreloc section which can be
5628 used at runtime to relocate the section. This is called by the
5629 linker when the --embedded-relocs switch is used. This is called
5630 after the add_symbols entry point has been called for all the
5631 objects, and before the final_link entry point is called. */
5634 bfd_bfin_elf32_create_embedded_relocs (bfd
*abfd
,
5635 struct bfd_link_info
*info
,
5640 Elf_Internal_Shdr
*symtab_hdr
;
5641 Elf_Internal_Sym
*isymbuf
= NULL
;
5642 Elf_Internal_Rela
*internal_relocs
= NULL
;
5643 Elf_Internal_Rela
*irel
, *irelend
;
5647 BFD_ASSERT (! info
->relocatable
);
5651 if (datasec
->reloc_count
== 0)
5654 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5656 /* Get a copy of the native relocations. */
5657 internal_relocs
= (_bfd_elf_link_read_relocs
5658 (abfd
, datasec
, NULL
, (Elf_Internal_Rela
*) NULL
,
5659 info
->keep_memory
));
5660 if (internal_relocs
== NULL
)
5663 amt
= (bfd_size_type
) datasec
->reloc_count
* 12;
5664 relsec
->contents
= (bfd_byte
*) bfd_alloc (abfd
, amt
);
5665 if (relsec
->contents
== NULL
)
5668 p
= relsec
->contents
;
5670 irelend
= internal_relocs
+ datasec
->reloc_count
;
5671 for (irel
= internal_relocs
; irel
< irelend
; irel
++, p
+= 12)
5673 asection
*targetsec
;
5675 /* We are going to write a four byte longword into the runtime
5676 reloc section. The longword will be the address in the data
5677 section which must be relocated. It is followed by the name
5678 of the target section NUL-padded or truncated to 8
5681 /* We can only relocate absolute longword relocs at run time. */
5682 if (ELF32_R_TYPE (irel
->r_info
) != (int) R_BFIN_BYTE4_DATA
)
5684 *errmsg
= _("unsupported reloc type");
5685 bfd_set_error (bfd_error_bad_value
);
5689 /* Get the target section referred to by the reloc. */
5690 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
5692 /* A local symbol. */
5693 Elf_Internal_Sym
*isym
;
5695 /* Read this BFD's local symbols if we haven't done so already. */
5696 if (isymbuf
== NULL
)
5698 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5699 if (isymbuf
== NULL
)
5700 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
5701 symtab_hdr
->sh_info
, 0,
5703 if (isymbuf
== NULL
)
5707 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
5708 targetsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5713 struct elf_link_hash_entry
*h
;
5715 /* An external symbol. */
5716 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
5717 h
= elf_sym_hashes (abfd
)[indx
];
5718 BFD_ASSERT (h
!= NULL
);
5719 if (h
->root
.type
== bfd_link_hash_defined
5720 || h
->root
.type
== bfd_link_hash_defweak
)
5721 targetsec
= h
->root
.u
.def
.section
;
5726 bfd_put_32 (abfd
, irel
->r_offset
+ datasec
->output_offset
, p
);
5727 memset (p
+ 4, 0, 8);
5728 if (targetsec
!= NULL
)
5729 strncpy ((char *) p
+ 4, targetsec
->output_section
->name
, 8);
5732 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5734 if (internal_relocs
!= NULL
5735 && elf_section_data (datasec
)->relocs
!= internal_relocs
)
5736 free (internal_relocs
);
5740 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5742 if (internal_relocs
!= NULL
5743 && elf_section_data (datasec
)->relocs
!= internal_relocs
)
5744 free (internal_relocs
);
5748 struct bfd_elf_special_section
const elf32_bfin_special_sections
[] =
5750 { ".l1.text", 8, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
5751 { ".l1.data", 8, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
5752 { NULL
, 0, 0, 0, 0 }
5756 #define TARGET_LITTLE_SYM bfd_elf32_bfin_vec
5757 #define TARGET_LITTLE_NAME "elf32-bfin"
5758 #define ELF_ARCH bfd_arch_bfin
5759 #define ELF_TARGET_ID BFIN_ELF_DATA
5760 #define ELF_MACHINE_CODE EM_BLACKFIN
5761 #define ELF_MAXPAGESIZE 0x1000
5762 #define elf_symbol_leading_char '_'
5764 #define bfd_elf32_bfd_reloc_type_lookup bfin_bfd_reloc_type_lookup
5765 #define bfd_elf32_bfd_reloc_name_lookup \
5766 bfin_bfd_reloc_name_lookup
5767 #define elf_info_to_howto bfin_info_to_howto
5768 #define elf_info_to_howto_rel 0
5769 #define elf_backend_object_p elf32_bfin_object_p
5771 #define bfd_elf32_bfd_is_local_label_name \
5772 bfin_is_local_label_name
5773 #define bfin_hash_table(p) \
5774 ((struct bfin_link_hash_table *) (p)->hash)
5778 #define elf_backend_create_dynamic_sections \
5779 _bfd_elf_create_dynamic_sections
5780 #define bfd_elf32_bfd_link_hash_table_create \
5781 bfin_link_hash_table_create
5782 #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link
5784 #define elf_backend_check_relocs bfin_check_relocs
5785 #define elf_backend_adjust_dynamic_symbol \
5786 bfin_adjust_dynamic_symbol
5787 #define elf_backend_size_dynamic_sections \
5788 bfin_size_dynamic_sections
5789 #define elf_backend_relocate_section bfin_relocate_section
5790 #define elf_backend_finish_dynamic_symbol \
5791 bfin_finish_dynamic_symbol
5792 #define elf_backend_finish_dynamic_sections \
5793 bfin_finish_dynamic_sections
5794 #define elf_backend_gc_mark_hook bfin_gc_mark_hook
5795 #define elf_backend_gc_sweep_hook bfin_gc_sweep_hook
5796 #define bfd_elf32_bfd_merge_private_bfd_data \
5797 elf32_bfin_merge_private_bfd_data
5798 #define bfd_elf32_bfd_set_private_flags \
5799 elf32_bfin_set_private_flags
5800 #define bfd_elf32_bfd_print_private_bfd_data \
5801 elf32_bfin_print_private_bfd_data
5802 #define elf_backend_final_write_processing \
5803 elf32_bfin_final_write_processing
5804 #define elf_backend_reloc_type_class elf32_bfin_reloc_type_class
5805 #define elf_backend_can_gc_sections 1
5806 #define elf_backend_special_sections elf32_bfin_special_sections
5807 #define elf_backend_can_refcount 1
5808 #define elf_backend_want_got_plt 0
5809 #define elf_backend_plt_readonly 1
5810 #define elf_backend_want_plt_sym 0
5811 #define elf_backend_got_header_size 12
5812 #define elf_backend_rela_normal 1
5814 #include "elf32-target.h"
5816 #undef TARGET_LITTLE_SYM
5817 #define TARGET_LITTLE_SYM bfd_elf32_bfinfdpic_vec
5818 #undef TARGET_LITTLE_NAME
5819 #define TARGET_LITTLE_NAME "elf32-bfinfdpic"
5821 #define elf32_bed elf32_bfinfdpic_bed
5823 #undef elf_backend_gc_sweep_hook
5824 #define elf_backend_gc_sweep_hook bfinfdpic_gc_sweep_hook
5826 #undef elf_backend_got_header_size
5827 #define elf_backend_got_header_size 0
5829 #undef elf_backend_relocate_section
5830 #define elf_backend_relocate_section bfinfdpic_relocate_section
5831 #undef elf_backend_check_relocs
5832 #define elf_backend_check_relocs bfinfdpic_check_relocs
5834 #undef bfd_elf32_bfd_link_hash_table_create
5835 #define bfd_elf32_bfd_link_hash_table_create \
5836 bfinfdpic_elf_link_hash_table_create
5837 #undef elf_backend_always_size_sections
5838 #define elf_backend_always_size_sections \
5839 elf32_bfinfdpic_always_size_sections
5840 #undef elf_backend_modify_program_headers
5841 #define elf_backend_modify_program_headers \
5842 elf32_bfinfdpic_modify_program_headers
5843 #undef bfd_elf32_bfd_copy_private_bfd_data
5844 #define bfd_elf32_bfd_copy_private_bfd_data \
5845 elf32_bfinfdpic_copy_private_bfd_data
5847 #undef elf_backend_create_dynamic_sections
5848 #define elf_backend_create_dynamic_sections \
5849 elf32_bfinfdpic_create_dynamic_sections
5850 #undef elf_backend_adjust_dynamic_symbol
5851 #define elf_backend_adjust_dynamic_symbol \
5852 elf32_bfinfdpic_adjust_dynamic_symbol
5853 #undef elf_backend_size_dynamic_sections
5854 #define elf_backend_size_dynamic_sections \
5855 elf32_bfinfdpic_size_dynamic_sections
5856 #undef elf_backend_finish_dynamic_symbol
5857 #define elf_backend_finish_dynamic_symbol \
5858 elf32_bfinfdpic_finish_dynamic_symbol
5859 #undef elf_backend_finish_dynamic_sections
5860 #define elf_backend_finish_dynamic_sections \
5861 elf32_bfinfdpic_finish_dynamic_sections
5863 #undef elf_backend_discard_info
5864 #define elf_backend_discard_info \
5865 bfinfdpic_elf_discard_info
5866 #undef elf_backend_can_make_relative_eh_frame
5867 #define elf_backend_can_make_relative_eh_frame \
5868 bfinfdpic_elf_use_relative_eh_frame
5869 #undef elf_backend_can_make_lsda_relative_eh_frame
5870 #define elf_backend_can_make_lsda_relative_eh_frame \
5871 bfinfdpic_elf_use_relative_eh_frame
5872 #undef elf_backend_encode_eh_address
5873 #define elf_backend_encode_eh_address \
5874 bfinfdpic_elf_encode_eh_address
5876 #undef elf_backend_may_use_rel_p
5877 #define elf_backend_may_use_rel_p 1
5878 #undef elf_backend_may_use_rela_p
5879 #define elf_backend_may_use_rela_p 1
5880 /* We use REL for dynamic relocations only. */
5881 #undef elf_backend_default_use_rela_p
5882 #define elf_backend_default_use_rela_p 1
5884 #undef elf_backend_omit_section_dynsym
5885 #define elf_backend_omit_section_dynsym _bfinfdpic_link_omit_section_dynsym
5887 #include "elf32-target.h"