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 PTR 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$. */
1142 bfin_is_local_label_name (
1146 if (label
[0] == 'L' && label
[1] == '$' )
1149 return _bfd_elf_is_local_label_name (abfd
, label
);
1152 /* Look through the relocs for a section during the first phase, and
1153 allocate space in the global offset table or procedure linkage
1157 bfin_check_relocs (bfd
* abfd
,
1158 struct bfd_link_info
*info
,
1160 const Elf_Internal_Rela
*relocs
)
1163 Elf_Internal_Shdr
*symtab_hdr
;
1164 struct elf_link_hash_entry
**sym_hashes
;
1165 bfd_signed_vma
*local_got_refcounts
;
1166 const Elf_Internal_Rela
*rel
;
1167 const Elf_Internal_Rela
*rel_end
;
1170 if (info
->relocatable
)
1173 dynobj
= elf_hash_table (info
)->dynobj
;
1174 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1175 sym_hashes
= elf_sym_hashes (abfd
);
1176 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1181 rel_end
= relocs
+ sec
->reloc_count
;
1182 for (rel
= relocs
; rel
< rel_end
; rel
++)
1184 unsigned long r_symndx
;
1185 struct elf_link_hash_entry
*h
;
1187 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1188 if (r_symndx
< symtab_hdr
->sh_info
)
1191 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1193 switch (ELF32_R_TYPE (rel
->r_info
))
1195 /* This relocation describes the C++ object vtable hierarchy.
1196 Reconstruct it for later use during GC. */
1197 case R_BFIN_GNU_VTINHERIT
:
1198 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1202 /* This relocation describes which C++ vtable entries
1203 are actually used. Record for later use during GC. */
1204 case R_BFIN_GNU_VTENTRY
:
1205 BFD_ASSERT (h
!= NULL
);
1207 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1213 && strcmp (h
->root
.root
.string
, "__GLOBAL_OFFSET_TABLE_") == 0)
1219 /* Create the .got section. */
1220 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
1221 if (!_bfd_elf_create_got_section (dynobj
, info
))
1227 sgot
= bfd_get_linker_section (dynobj
, ".got");
1228 BFD_ASSERT (sgot
!= NULL
);
1231 if (srelgot
== NULL
&& (h
!= NULL
|| info
->shared
))
1233 srelgot
= bfd_get_linker_section (dynobj
, ".rela.got");
1234 if (srelgot
== NULL
)
1236 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
1237 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
1239 srelgot
= bfd_make_section_anyway_with_flags (dynobj
,
1243 || !bfd_set_section_alignment (dynobj
, srelgot
, 2))
1250 if (h
->got
.refcount
== 0)
1252 /* Make sure this symbol is output as a dynamic symbol. */
1253 if (h
->dynindx
== -1 && !h
->forced_local
)
1255 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
1259 /* Allocate space in the .got section. */
1261 /* Allocate relocation space. */
1262 srelgot
->size
+= sizeof (Elf32_External_Rela
);
1268 /* This is a global offset table entry for a local symbol. */
1269 if (local_got_refcounts
== NULL
)
1273 size
= symtab_hdr
->sh_info
;
1274 size
*= sizeof (bfd_signed_vma
);
1275 local_got_refcounts
= ((bfd_signed_vma
*)
1276 bfd_zalloc (abfd
, size
));
1277 if (local_got_refcounts
== NULL
)
1279 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1281 if (local_got_refcounts
[r_symndx
] == 0)
1286 /* If we are generating a shared object, we need to
1287 output a R_68K_RELATIVE reloc so that the dynamic
1288 linker can adjust this GOT entry. */
1289 srelgot
->size
+= sizeof (Elf32_External_Rela
);
1292 local_got_refcounts
[r_symndx
]++;
1304 static enum elf_reloc_type_class
1305 elf32_bfin_reloc_type_class (const Elf_Internal_Rela
* rela
)
1307 switch ((int) ELF32_R_TYPE (rela
->r_info
))
1310 return reloc_class_normal
;
1314 static bfd_reloc_status_type
1315 bfin_final_link_relocate (Elf_Internal_Rela
*rel
, reloc_howto_type
*howto
,
1316 bfd
*input_bfd
, asection
*input_section
,
1317 bfd_byte
*contents
, bfd_vma address
,
1318 bfd_vma value
, bfd_vma addend
)
1320 int r_type
= ELF32_R_TYPE (rel
->r_info
);
1322 if (r_type
== R_BFIN_PCREL24
|| r_type
== R_BFIN_PCREL24_JUMP_L
)
1324 bfd_reloc_status_type r
= bfd_reloc_ok
;
1327 if (address
> bfd_get_section_limit (input_bfd
, input_section
))
1328 return bfd_reloc_outofrange
;
1332 /* Perform usual pc-relative correction. */
1333 value
-= input_section
->output_section
->vma
+ input_section
->output_offset
;
1336 /* We are getting reloc_entry->address 2 byte off from
1337 the start of instruction. Assuming absolute postion
1338 of the reloc data. But, following code had been written assuming
1339 reloc address is starting at begining of instruction.
1340 To compensate that I have increased the value of
1341 relocation by 1 (effectively 2) and used the addr -2 instead of addr. */
1346 if ((value
& 0xFF000000) != 0
1347 && (value
& 0xFF000000) != 0xFF000000)
1348 r
= bfd_reloc_overflow
;
1352 x
= bfd_get_16 (input_bfd
, contents
+ address
);
1353 x
= (x
& 0xff00) | ((value
>> 16) & 0xff);
1354 bfd_put_16 (input_bfd
, x
, contents
+ address
);
1356 x
= bfd_get_16 (input_bfd
, contents
+ address
+ 2);
1358 bfd_put_16 (input_bfd
, x
, contents
+ address
+ 2);
1362 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
1363 rel
->r_offset
, value
, addend
);
1368 bfin_relocate_section (bfd
* output_bfd
,
1369 struct bfd_link_info
*info
,
1371 asection
* input_section
,
1372 bfd_byte
* contents
,
1373 Elf_Internal_Rela
* relocs
,
1374 Elf_Internal_Sym
* local_syms
,
1375 asection
** local_sections
)
1378 Elf_Internal_Shdr
*symtab_hdr
;
1379 struct elf_link_hash_entry
**sym_hashes
;
1380 bfd_vma
*local_got_offsets
;
1382 Elf_Internal_Rela
*rel
;
1383 Elf_Internal_Rela
*relend
;
1386 dynobj
= elf_hash_table (info
)->dynobj
;
1387 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
1388 sym_hashes
= elf_sym_hashes (input_bfd
);
1389 local_got_offsets
= elf_local_got_offsets (input_bfd
);
1394 relend
= relocs
+ input_section
->reloc_count
;
1395 for (; rel
< relend
; rel
++, i
++)
1398 reloc_howto_type
*howto
;
1399 unsigned long r_symndx
;
1400 struct elf_link_hash_entry
*h
;
1401 Elf_Internal_Sym
*sym
;
1403 bfd_vma relocation
= 0;
1404 bfd_boolean unresolved_reloc
;
1405 bfd_reloc_status_type r
;
1408 r_type
= ELF32_R_TYPE (rel
->r_info
);
1409 if (r_type
< 0 || r_type
>= 243)
1411 bfd_set_error (bfd_error_bad_value
);
1415 if (r_type
== R_BFIN_GNU_VTENTRY
1416 || r_type
== R_BFIN_GNU_VTINHERIT
)
1419 howto
= bfin_reloc_type_lookup (input_bfd
, r_type
);
1422 bfd_set_error (bfd_error_bad_value
);
1425 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1430 unresolved_reloc
= FALSE
;
1432 if (r_symndx
< symtab_hdr
->sh_info
)
1434 sym
= local_syms
+ r_symndx
;
1435 sec
= local_sections
[r_symndx
];
1436 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
1442 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
1443 r_symndx
, symtab_hdr
, sym_hashes
,
1445 unresolved_reloc
, warned
);
1448 if (sec
!= NULL
&& discarded_section (sec
))
1449 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
1450 rel
, 1, relend
, howto
, 0, contents
);
1452 if (info
->relocatable
)
1455 address
= rel
->r_offset
;
1457 /* Then, process normally. */
1460 case R_BFIN_GNU_VTINHERIT
:
1461 case R_BFIN_GNU_VTENTRY
:
1462 return bfd_reloc_ok
;
1465 /* Relocation is to the address of the entry for this symbol
1466 in the global offset table. */
1468 && strcmp (h
->root
.root
.string
, "__GLOBAL_OFFSET_TABLE_") == 0)
1471 /* Relocation is the offset of the entry for this symbol in
1472 the global offset table. */
1479 /* Create the .got section. */
1480 elf_hash_table (info
)->dynobj
= dynobj
= output_bfd
;
1481 if (!_bfd_elf_create_got_section (dynobj
, info
))
1487 sgot
= bfd_get_linker_section (dynobj
, ".got");
1488 BFD_ASSERT (sgot
!= NULL
);
1495 off
= h
->got
.offset
;
1496 BFD_ASSERT (off
!= (bfd_vma
) - 1);
1497 dyn
= elf_hash_table (info
)->dynamic_sections_created
;
1499 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
1506 /* This is actually a static link, or it is a
1507 -Bsymbolic link and the symbol is defined
1508 locally, or the symbol was forced to be local
1509 because of a version file.. We must initialize
1510 this entry in the global offset table. Since
1511 the offset must always be a multiple of 4, we
1512 use the least significant bit to record whether
1513 we have initialized it already.
1515 When doing a dynamic link, we create a .rela.got
1516 relocation entry to initialize the value. This
1517 is done in the finish_dynamic_symbol routine. */
1522 bfd_put_32 (output_bfd
, relocation
,
1523 sgot
->contents
+ off
);
1528 unresolved_reloc
= FALSE
;
1532 BFD_ASSERT (local_got_offsets
!= NULL
);
1533 off
= local_got_offsets
[r_symndx
];
1534 BFD_ASSERT (off
!= (bfd_vma
) - 1);
1536 /* The offset must always be a multiple of 4. We use
1537 the least significant bit to record whether we have
1538 already generated the necessary reloc. */
1543 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1548 Elf_Internal_Rela outrel
;
1551 s
= bfd_get_linker_section (dynobj
, ".rela.got");
1552 BFD_ASSERT (s
!= NULL
);
1554 outrel
.r_offset
= (sgot
->output_section
->vma
1555 + sgot
->output_offset
+ off
);
1557 ELF32_R_INFO (0, R_BFIN_PCREL24
);
1558 outrel
.r_addend
= relocation
;
1561 s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1562 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1565 local_got_offsets
[r_symndx
] |= 1;
1569 relocation
= sgot
->output_offset
+ off
;
1571 /* bfin : preg = [preg + 17bitdiv4offset] relocation is div by 4. */
1578 r
= bfin_final_link_relocate (rel
, howto
, input_bfd
, input_section
,
1580 relocation
, rel
->r_addend
);
1585 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
1586 because such sections are not SEC_ALLOC and thus ld.so will
1587 not process them. */
1588 if (unresolved_reloc
1589 && !((input_section
->flags
& SEC_DEBUGGING
) != 0 && h
->def_dynamic
)
1590 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
1591 rel
->r_offset
) != (bfd_vma
) -1)
1593 (*_bfd_error_handler
)
1594 (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"),
1596 input_section
, (long) rel
->r_offset
, h
->root
.root
.string
);
1600 if (r
!= bfd_reloc_ok
)
1605 name
= h
->root
.root
.string
;
1608 name
= bfd_elf_string_from_elf_section (input_bfd
,
1609 symtab_hdr
->sh_link
,
1614 name
= bfd_section_name (input_bfd
, sec
);
1617 if (r
== bfd_reloc_overflow
)
1619 if (!(info
->callbacks
->reloc_overflow
1620 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
1621 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
)))
1626 (*_bfd_error_handler
)
1627 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
1628 input_bfd
, input_section
,
1629 (long) rel
->r_offset
, name
, (int) r
);
1639 bfin_gc_mark_hook (asection
* sec
,
1640 struct bfd_link_info
*info
,
1641 Elf_Internal_Rela
* rel
,
1642 struct elf_link_hash_entry
*h
,
1643 Elf_Internal_Sym
* sym
)
1646 switch (ELF32_R_TYPE (rel
->r_info
))
1648 case R_BFIN_GNU_VTINHERIT
:
1649 case R_BFIN_GNU_VTENTRY
:
1653 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1656 /* Update the got entry reference counts for the section being removed. */
1659 bfin_gc_sweep_hook (bfd
* abfd
,
1660 struct bfd_link_info
*info
,
1662 const Elf_Internal_Rela
* relocs
)
1664 Elf_Internal_Shdr
*symtab_hdr
;
1665 struct elf_link_hash_entry
**sym_hashes
;
1666 bfd_signed_vma
*local_got_refcounts
;
1667 const Elf_Internal_Rela
*rel
, *relend
;
1672 dynobj
= elf_hash_table (info
)->dynobj
;
1676 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1677 sym_hashes
= elf_sym_hashes (abfd
);
1678 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1680 sgot
= bfd_get_linker_section (dynobj
, ".got");
1681 srelgot
= bfd_get_linker_section (dynobj
, ".rela.got");
1683 relend
= relocs
+ sec
->reloc_count
;
1684 for (rel
= relocs
; rel
< relend
; rel
++)
1686 unsigned long r_symndx
;
1687 struct elf_link_hash_entry
*h
;
1689 switch (ELF32_R_TYPE (rel
->r_info
))
1692 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1693 if (r_symndx
>= symtab_hdr
->sh_info
)
1695 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1696 if (h
->got
.refcount
> 0)
1699 if (h
->got
.refcount
== 0)
1701 /* We don't need the .got entry any more. */
1703 srelgot
->size
-= sizeof (Elf32_External_Rela
);
1707 else if (local_got_refcounts
!= NULL
)
1709 if (local_got_refcounts
[r_symndx
] > 0)
1711 --local_got_refcounts
[r_symndx
];
1712 if (local_got_refcounts
[r_symndx
] == 0)
1714 /* We don't need the .got entry any more. */
1717 srelgot
->size
-= sizeof (Elf32_External_Rela
);
1729 extern const bfd_target bfd_elf32_bfinfdpic_vec
;
1730 #define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_bfinfdpic_vec)
1732 /* An extension of the elf hash table data structure,
1733 containing some additional Blackfin-specific data. */
1734 struct bfinfdpic_elf_link_hash_table
1736 struct elf_link_hash_table elf
;
1738 /* A pointer to the .got section. */
1740 /* A pointer to the .rel.got section. */
1742 /* A pointer to the .rofixup section. */
1743 asection
*sgotfixup
;
1744 /* A pointer to the .plt section. */
1746 /* A pointer to the .rel.plt section. */
1748 /* GOT base offset. */
1750 /* Location of the first non-lazy PLT entry, i.e., the number of
1751 bytes taken by lazy PLT entries. */
1753 /* A hash table holding information about which symbols were
1754 referenced with which PIC-related relocations. */
1755 struct htab
*relocs_info
;
1756 /* Summary reloc information collected by
1757 _bfinfdpic_count_got_plt_entries. */
1758 struct _bfinfdpic_dynamic_got_info
*g
;
1761 /* Get the Blackfin ELF linker hash table from a link_info structure. */
1763 #define bfinfdpic_hash_table(info) \
1764 (elf_hash_table_id ((struct elf_link_hash_table *) ((info)->hash)) \
1765 == BFIN_ELF_DATA ? ((struct bfinfdpic_elf_link_hash_table *) ((info)->hash)) : NULL)
1767 #define bfinfdpic_got_section(info) \
1768 (bfinfdpic_hash_table (info)->sgot)
1769 #define bfinfdpic_gotrel_section(info) \
1770 (bfinfdpic_hash_table (info)->sgotrel)
1771 #define bfinfdpic_gotfixup_section(info) \
1772 (bfinfdpic_hash_table (info)->sgotfixup)
1773 #define bfinfdpic_plt_section(info) \
1774 (bfinfdpic_hash_table (info)->splt)
1775 #define bfinfdpic_pltrel_section(info) \
1776 (bfinfdpic_hash_table (info)->spltrel)
1777 #define bfinfdpic_relocs_info(info) \
1778 (bfinfdpic_hash_table (info)->relocs_info)
1779 #define bfinfdpic_got_initial_offset(info) \
1780 (bfinfdpic_hash_table (info)->got0)
1781 #define bfinfdpic_plt_initial_offset(info) \
1782 (bfinfdpic_hash_table (info)->plt0)
1783 #define bfinfdpic_dynamic_got_plt_info(info) \
1784 (bfinfdpic_hash_table (info)->g)
1786 /* The name of the dynamic interpreter. This is put in the .interp
1789 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
1791 #define DEFAULT_STACK_SIZE 0x20000
1793 /* This structure is used to collect the number of entries present in
1794 each addressable range of the got. */
1795 struct _bfinfdpic_dynamic_got_info
1797 /* Several bits of information about the current link. */
1798 struct bfd_link_info
*info
;
1799 /* Total size needed for GOT entries within the 18- or 32-bit
1801 bfd_vma got17m4
, gothilo
;
1802 /* Total size needed for function descriptor entries within the 18-
1803 or 32-bit ranges. */
1804 bfd_vma fd17m4
, fdhilo
;
1805 /* Total size needed function descriptor entries referenced in PLT
1806 entries, that would be profitable to place in offsets close to
1807 the PIC register. */
1809 /* Total size needed by lazy PLT entries. */
1811 /* Number of relocations carried over from input object files. */
1812 unsigned long relocs
;
1813 /* Number of fixups introduced by relocations in input object files. */
1814 unsigned long fixups
;
1817 /* Create a Blackfin ELF linker hash table. */
1819 static struct bfd_link_hash_table
*
1820 bfinfdpic_elf_link_hash_table_create (bfd
*abfd
)
1822 struct bfinfdpic_elf_link_hash_table
*ret
;
1823 bfd_size_type amt
= sizeof (struct bfinfdpic_elf_link_hash_table
);
1825 ret
= bfd_zalloc (abfd
, amt
);
1829 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
1830 _bfd_elf_link_hash_newfunc
,
1831 sizeof (struct elf_link_hash_entry
),
1838 return &ret
->elf
.root
;
1841 /* Decide whether a reference to a symbol can be resolved locally or
1842 not. If the symbol is protected, we want the local address, but
1843 its function descriptor must be assigned by the dynamic linker. */
1844 #define BFINFDPIC_SYM_LOCAL(INFO, H) \
1845 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \
1846 || ! elf_hash_table (INFO)->dynamic_sections_created)
1847 #define BFINFDPIC_FUNCDESC_LOCAL(INFO, H) \
1848 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created)
1850 /* This structure collects information on what kind of GOT, PLT or
1851 function descriptors are required by relocations that reference a
1853 struct bfinfdpic_relocs_info
1855 /* The index of the symbol, as stored in the relocation r_info, if
1856 we have a local symbol; -1 otherwise. */
1860 /* The input bfd in which the symbol is defined, if it's a local
1863 /* If symndx == -1, the hash table entry corresponding to a global
1864 symbol (even if it turns out to bind locally, in which case it
1865 should ideally be replaced with section's symndx + addend). */
1866 struct elf_link_hash_entry
*h
;
1868 /* The addend of the relocation that references the symbol. */
1871 /* The fields above are used to identify an entry. The fields below
1872 contain information on how an entry is used and, later on, which
1873 locations it was assigned. */
1874 /* The following 2 fields record whether the symbol+addend above was
1875 ever referenced with a GOT relocation. The 17M4 suffix indicates a
1876 GOT17M4 relocation; hilo is used for GOTLO/GOTHI pairs. */
1879 /* Whether a FUNCDESC relocation references symbol+addend. */
1881 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */
1884 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */
1885 unsigned fdgoff17m4
;
1886 unsigned fdgoffhilo
;
1887 /* Whether symbol+addend is referenced with GOTOFF17M4, GOTOFFLO or
1888 GOTOFFHI relocations. The addend doesn't really matter, since we
1889 envision that this will only be used to check whether the symbol
1890 is mapped to the same segment as the got. */
1892 /* Whether symbol+addend is referenced by a LABEL24 relocation. */
1894 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE
1897 /* Whether we need a PLT entry for a symbol. Should be implied by
1899 (call && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)) */
1901 /* Whether a function descriptor should be created in this link unit
1902 for symbol+addend. Should be implied by something like:
1903 (plt || fdgotoff17m4 || fdgotofflohi
1904 || ((fd || fdgot17m4 || fdgothilo)
1905 && (symndx != -1 || BFINFDPIC_FUNCDESC_LOCAL (info, d.h)))) */
1907 /* Whether a lazy PLT entry is needed for this symbol+addend.
1908 Should be implied by something like:
1909 (privfd && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)
1910 && ! (info->flags & DF_BIND_NOW)) */
1912 /* Whether we've already emitted GOT relocations and PLT entries as
1913 needed for this symbol. */
1916 /* The number of R_BFIN_BYTE4_DATA, R_BFIN_FUNCDESC and R_BFIN_FUNCDESC_VALUE
1917 relocations referencing the symbol. */
1918 unsigned relocs32
, relocsfd
, relocsfdv
;
1920 /* The number of .rofixups entries and dynamic relocations allocated
1921 for this symbol, minus any that might have already been used. */
1922 unsigned fixups
, dynrelocs
;
1924 /* The offsets of the GOT entries assigned to symbol+addend, to the
1925 function descriptor's address, and to a function descriptor,
1926 respectively. Should be zero if unassigned. The offsets are
1927 counted from the value that will be assigned to the PIC register,
1928 not from the beginning of the .got section. */
1929 bfd_signed_vma got_entry
, fdgot_entry
, fd_entry
;
1930 /* The offsets of the PLT entries assigned to symbol+addend,
1931 non-lazy and lazy, respectively. If unassigned, should be
1933 bfd_vma plt_entry
, lzplt_entry
;
1936 /* Compute a hash with the key fields of an bfinfdpic_relocs_info entry. */
1938 bfinfdpic_relocs_info_hash (const void *entry_
)
1940 const struct bfinfdpic_relocs_info
*entry
= entry_
;
1942 return (entry
->symndx
== -1
1943 ? (long) entry
->d
.h
->root
.root
.hash
1944 : entry
->symndx
+ (long) entry
->d
.abfd
->id
* 257) + entry
->addend
;
1947 /* Test whether the key fields of two bfinfdpic_relocs_info entries are
1950 bfinfdpic_relocs_info_eq (const void *entry1
, const void *entry2
)
1952 const struct bfinfdpic_relocs_info
*e1
= entry1
;
1953 const struct bfinfdpic_relocs_info
*e2
= entry2
;
1955 return e1
->symndx
== e2
->symndx
&& e1
->addend
== e2
->addend
1956 && (e1
->symndx
== -1 ? e1
->d
.h
== e2
->d
.h
: e1
->d
.abfd
== e2
->d
.abfd
);
1959 /* Find or create an entry in a hash table HT that matches the key
1960 fields of the given ENTRY. If it's not found, memory for a new
1961 entry is allocated in ABFD's obstack. */
1962 static struct bfinfdpic_relocs_info
*
1963 bfinfdpic_relocs_info_find (struct htab
*ht
,
1965 const struct bfinfdpic_relocs_info
*entry
,
1966 enum insert_option insert
)
1968 struct bfinfdpic_relocs_info
**loc
;
1973 loc
= (struct bfinfdpic_relocs_info
**) htab_find_slot (ht
, entry
, insert
);
1981 *loc
= bfd_zalloc (abfd
, sizeof (**loc
));
1986 (*loc
)->symndx
= entry
->symndx
;
1987 (*loc
)->d
= entry
->d
;
1988 (*loc
)->addend
= entry
->addend
;
1989 (*loc
)->plt_entry
= (bfd_vma
)-1;
1990 (*loc
)->lzplt_entry
= (bfd_vma
)-1;
1995 /* Obtain the address of the entry in HT associated with H's symbol +
1996 addend, creating a new entry if none existed. ABFD is only used
1997 for memory allocation purposes. */
1998 inline static struct bfinfdpic_relocs_info
*
1999 bfinfdpic_relocs_info_for_global (struct htab
*ht
,
2001 struct elf_link_hash_entry
*h
,
2003 enum insert_option insert
)
2005 struct bfinfdpic_relocs_info entry
;
2009 entry
.addend
= addend
;
2011 return bfinfdpic_relocs_info_find (ht
, abfd
, &entry
, insert
);
2014 /* Obtain the address of the entry in HT associated with the SYMNDXth
2015 local symbol of the input bfd ABFD, plus the addend, creating a new
2016 entry if none existed. */
2017 inline static struct bfinfdpic_relocs_info
*
2018 bfinfdpic_relocs_info_for_local (struct htab
*ht
,
2022 enum insert_option insert
)
2024 struct bfinfdpic_relocs_info entry
;
2026 entry
.symndx
= symndx
;
2027 entry
.d
.abfd
= abfd
;
2028 entry
.addend
= addend
;
2030 return bfinfdpic_relocs_info_find (ht
, abfd
, &entry
, insert
);
2033 /* Merge fields set by check_relocs() of two entries that end up being
2034 mapped to the same (presumably global) symbol. */
2037 bfinfdpic_pic_merge_early_relocs_info (struct bfinfdpic_relocs_info
*e2
,
2038 struct bfinfdpic_relocs_info
const *e1
)
2040 e2
->got17m4
|= e1
->got17m4
;
2041 e2
->gothilo
|= e1
->gothilo
;
2043 e2
->fdgot17m4
|= e1
->fdgot17m4
;
2044 e2
->fdgothilo
|= e1
->fdgothilo
;
2045 e2
->fdgoff17m4
|= e1
->fdgoff17m4
;
2046 e2
->fdgoffhilo
|= e1
->fdgoffhilo
;
2047 e2
->gotoff
|= e1
->gotoff
;
2048 e2
->call
|= e1
->call
;
2052 /* Every block of 65535 lazy PLT entries shares a single call to the
2053 resolver, inserted in the 32768th lazy PLT entry (i.e., entry #
2054 32767, counting from 0). All other lazy PLT entries branch to it
2055 in a single instruction. */
2057 #define LZPLT_RESOLVER_EXTRA 10
2058 #define LZPLT_NORMAL_SIZE 6
2059 #define LZPLT_ENTRIES 1362
2061 #define BFINFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) LZPLT_NORMAL_SIZE * LZPLT_ENTRIES + LZPLT_RESOLVER_EXTRA)
2062 #define BFINFDPIC_LZPLT_RESOLV_LOC (LZPLT_NORMAL_SIZE * LZPLT_ENTRIES / 2)
2064 /* Add a dynamic relocation to the SRELOC section. */
2066 inline static bfd_vma
2067 _bfinfdpic_add_dyn_reloc (bfd
*output_bfd
, asection
*sreloc
, bfd_vma offset
,
2068 int reloc_type
, long dynindx
, bfd_vma addend
,
2069 struct bfinfdpic_relocs_info
*entry
)
2071 Elf_Internal_Rela outrel
;
2072 bfd_vma reloc_offset
;
2074 outrel
.r_offset
= offset
;
2075 outrel
.r_info
= ELF32_R_INFO (dynindx
, reloc_type
);
2076 outrel
.r_addend
= addend
;
2078 reloc_offset
= sreloc
->reloc_count
* sizeof (Elf32_External_Rel
);
2079 BFD_ASSERT (reloc_offset
< sreloc
->size
);
2080 bfd_elf32_swap_reloc_out (output_bfd
, &outrel
,
2081 sreloc
->contents
+ reloc_offset
);
2082 sreloc
->reloc_count
++;
2084 /* If the entry's index is zero, this relocation was probably to a
2085 linkonce section that got discarded. We reserved a dynamic
2086 relocation, but it was for another entry than the one we got at
2087 the time of emitting the relocation. Unfortunately there's no
2088 simple way for us to catch this situation, since the relocation
2089 is cleared right before calling relocate_section, at which point
2090 we no longer know what the relocation used to point to. */
2093 BFD_ASSERT (entry
->dynrelocs
> 0);
2097 return reloc_offset
;
2100 /* Add a fixup to the ROFIXUP section. */
2103 _bfinfdpic_add_rofixup (bfd
*output_bfd
, asection
*rofixup
, bfd_vma offset
,
2104 struct bfinfdpic_relocs_info
*entry
)
2106 bfd_vma fixup_offset
;
2108 if (rofixup
->flags
& SEC_EXCLUDE
)
2111 fixup_offset
= rofixup
->reloc_count
* 4;
2112 if (rofixup
->contents
)
2114 BFD_ASSERT (fixup_offset
< rofixup
->size
);
2115 bfd_put_32 (output_bfd
, offset
, rofixup
->contents
+ fixup_offset
);
2117 rofixup
->reloc_count
++;
2119 if (entry
&& entry
->symndx
)
2121 /* See discussion about symndx == 0 in _bfinfdpic_add_dyn_reloc
2123 BFD_ASSERT (entry
->fixups
> 0);
2127 return fixup_offset
;
2130 /* Find the segment number in which OSEC, and output section, is
2134 _bfinfdpic_osec_to_segment (bfd
*output_bfd
, asection
*osec
)
2136 Elf_Internal_Phdr
*p
= _bfd_elf_find_segment_containing_section (output_bfd
, osec
);
2138 return (p
!= NULL
) ? p
- elf_tdata (output_bfd
)->phdr
: -1;
2141 inline static bfd_boolean
2142 _bfinfdpic_osec_readonly_p (bfd
*output_bfd
, asection
*osec
)
2144 unsigned seg
= _bfinfdpic_osec_to_segment (output_bfd
, osec
);
2146 return ! (elf_tdata (output_bfd
)->phdr
[seg
].p_flags
& PF_W
);
2149 /* Generate relocations for GOT entries, function descriptors, and
2150 code for PLT and lazy PLT entries. */
2152 inline static bfd_boolean
2153 _bfinfdpic_emit_got_relocs_plt_entries (struct bfinfdpic_relocs_info
*entry
,
2155 struct bfd_link_info
*info
,
2157 Elf_Internal_Sym
*sym
,
2161 bfd_vma fd_lazy_rel_offset
= (bfd_vma
)-1;
2168 if (entry
->got_entry
|| entry
->fdgot_entry
|| entry
->fd_entry
)
2170 /* If the symbol is dynamic, consider it for dynamic
2171 relocations, otherwise decay to section + offset. */
2172 if (entry
->symndx
== -1 && entry
->d
.h
->dynindx
!= -1)
2173 dynindx
= entry
->d
.h
->dynindx
;
2177 && sec
->output_section
2178 && ! bfd_is_abs_section (sec
->output_section
)
2179 && ! bfd_is_und_section (sec
->output_section
))
2180 dynindx
= elf_section_data (sec
->output_section
)->dynindx
;
2186 /* Generate relocation for GOT entry pointing to the symbol. */
2187 if (entry
->got_entry
)
2190 bfd_vma ad
= addend
;
2192 /* If the symbol is dynamic but binds locally, use
2194 if (sec
&& (entry
->symndx
!= -1
2195 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2197 if (entry
->symndx
== -1)
2198 ad
+= entry
->d
.h
->root
.u
.def
.value
;
2200 ad
+= sym
->st_value
;
2201 ad
+= sec
->output_offset
;
2202 if (sec
->output_section
&& elf_section_data (sec
->output_section
))
2203 idx
= elf_section_data (sec
->output_section
)->dynindx
;
2208 /* If we're linking an executable at a fixed address, we can
2209 omit the dynamic relocation as long as the symbol is local to
2211 if (info
->executable
&& !info
->pie
2212 && (entry
->symndx
!= -1
2213 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2216 ad
+= sec
->output_section
->vma
;
2217 if (entry
->symndx
!= -1
2218 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
2219 _bfinfdpic_add_rofixup (output_bfd
,
2220 bfinfdpic_gotfixup_section (info
),
2221 bfinfdpic_got_section (info
)->output_section
2223 + bfinfdpic_got_section (info
)->output_offset
2224 + bfinfdpic_got_initial_offset (info
)
2225 + entry
->got_entry
, entry
);
2228 _bfinfdpic_add_dyn_reloc (output_bfd
, bfinfdpic_gotrel_section (info
),
2229 _bfd_elf_section_offset
2231 bfinfdpic_got_section (info
),
2232 bfinfdpic_got_initial_offset (info
)
2234 + bfinfdpic_got_section (info
)
2235 ->output_section
->vma
2236 + bfinfdpic_got_section (info
)->output_offset
,
2237 R_BFIN_BYTE4_DATA
, idx
, ad
, entry
);
2239 bfd_put_32 (output_bfd
, ad
,
2240 bfinfdpic_got_section (info
)->contents
2241 + bfinfdpic_got_initial_offset (info
)
2242 + entry
->got_entry
);
2245 /* Generate relocation for GOT entry pointing to a canonical
2246 function descriptor. */
2247 if (entry
->fdgot_entry
)
2252 if (! (entry
->symndx
== -1
2253 && entry
->d
.h
->root
.type
== bfd_link_hash_undefweak
2254 && BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2256 /* If the symbol is dynamic and there may be dynamic symbol
2257 resolution because we are, or are linked with, a shared
2258 library, emit a FUNCDESC relocation such that the dynamic
2259 linker will allocate the function descriptor. If the
2260 symbol needs a non-local function descriptor but binds
2261 locally (e.g., its visibility is protected, emit a
2262 dynamic relocation decayed to section+offset. */
2263 if (entry
->symndx
== -1
2264 && ! BFINFDPIC_FUNCDESC_LOCAL (info
, entry
->d
.h
)
2265 && BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)
2266 && !(info
->executable
&& !info
->pie
))
2268 reloc
= R_BFIN_FUNCDESC
;
2269 idx
= elf_section_data (entry
->d
.h
->root
.u
.def
.section
2270 ->output_section
)->dynindx
;
2271 ad
= entry
->d
.h
->root
.u
.def
.section
->output_offset
2272 + entry
->d
.h
->root
.u
.def
.value
;
2274 else if (entry
->symndx
== -1
2275 && ! BFINFDPIC_FUNCDESC_LOCAL (info
, entry
->d
.h
))
2277 reloc
= R_BFIN_FUNCDESC
;
2285 /* Otherwise, we know we have a private function descriptor,
2286 so reference it directly. */
2287 if (elf_hash_table (info
)->dynamic_sections_created
)
2288 BFD_ASSERT (entry
->privfd
);
2289 reloc
= R_BFIN_BYTE4_DATA
;
2290 idx
= elf_section_data (bfinfdpic_got_section (info
)
2291 ->output_section
)->dynindx
;
2292 ad
= bfinfdpic_got_section (info
)->output_offset
2293 + bfinfdpic_got_initial_offset (info
) + entry
->fd_entry
;
2296 /* If there is room for dynamic symbol resolution, emit the
2297 dynamic relocation. However, if we're linking an
2298 executable at a fixed location, we won't have emitted a
2299 dynamic symbol entry for the got section, so idx will be
2300 zero, which means we can and should compute the address
2301 of the private descriptor ourselves. */
2302 if (info
->executable
&& !info
->pie
2303 && (entry
->symndx
!= -1
2304 || BFINFDPIC_FUNCDESC_LOCAL (info
, entry
->d
.h
)))
2306 ad
+= bfinfdpic_got_section (info
)->output_section
->vma
;
2307 _bfinfdpic_add_rofixup (output_bfd
,
2308 bfinfdpic_gotfixup_section (info
),
2309 bfinfdpic_got_section (info
)
2310 ->output_section
->vma
2311 + bfinfdpic_got_section (info
)
2313 + bfinfdpic_got_initial_offset (info
)
2314 + entry
->fdgot_entry
, entry
);
2317 _bfinfdpic_add_dyn_reloc (output_bfd
,
2318 bfinfdpic_gotrel_section (info
),
2319 _bfd_elf_section_offset
2321 bfinfdpic_got_section (info
),
2322 bfinfdpic_got_initial_offset (info
)
2323 + entry
->fdgot_entry
)
2324 + bfinfdpic_got_section (info
)
2325 ->output_section
->vma
2326 + bfinfdpic_got_section (info
)
2328 reloc
, idx
, ad
, entry
);
2331 bfd_put_32 (output_bfd
, ad
,
2332 bfinfdpic_got_section (info
)->contents
2333 + bfinfdpic_got_initial_offset (info
)
2334 + entry
->fdgot_entry
);
2337 /* Generate relocation to fill in a private function descriptor in
2339 if (entry
->fd_entry
)
2342 bfd_vma ad
= addend
;
2344 long lowword
, highword
;
2346 /* If the symbol is dynamic but binds locally, use
2348 if (sec
&& (entry
->symndx
!= -1
2349 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2351 if (entry
->symndx
== -1)
2352 ad
+= entry
->d
.h
->root
.u
.def
.value
;
2354 ad
+= sym
->st_value
;
2355 ad
+= sec
->output_offset
;
2356 if (sec
->output_section
&& elf_section_data (sec
->output_section
))
2357 idx
= elf_section_data (sec
->output_section
)->dynindx
;
2362 /* If we're linking an executable at a fixed address, we can
2363 omit the dynamic relocation as long as the symbol is local to
2365 if (info
->executable
&& !info
->pie
2366 && (entry
->symndx
!= -1 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2369 ad
+= sec
->output_section
->vma
;
2371 if (entry
->symndx
!= -1
2372 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
2374 _bfinfdpic_add_rofixup (output_bfd
,
2375 bfinfdpic_gotfixup_section (info
),
2376 bfinfdpic_got_section (info
)
2377 ->output_section
->vma
2378 + bfinfdpic_got_section (info
)
2380 + bfinfdpic_got_initial_offset (info
)
2381 + entry
->fd_entry
, entry
);
2382 _bfinfdpic_add_rofixup (output_bfd
,
2383 bfinfdpic_gotfixup_section (info
),
2384 bfinfdpic_got_section (info
)
2385 ->output_section
->vma
2386 + bfinfdpic_got_section (info
)
2388 + bfinfdpic_got_initial_offset (info
)
2389 + entry
->fd_entry
+ 4, entry
);
2395 = _bfinfdpic_add_dyn_reloc (output_bfd
,
2397 ? bfinfdpic_pltrel_section (info
)
2398 : bfinfdpic_gotrel_section (info
),
2399 _bfd_elf_section_offset
2401 bfinfdpic_got_section (info
),
2402 bfinfdpic_got_initial_offset (info
)
2404 + bfinfdpic_got_section (info
)
2405 ->output_section
->vma
2406 + bfinfdpic_got_section (info
)
2408 R_BFIN_FUNCDESC_VALUE
, idx
, ad
, entry
);
2411 /* If we've omitted the dynamic relocation, just emit the fixed
2412 addresses of the symbol and of the local GOT base offset. */
2413 if (info
->executable
&& !info
->pie
&& sec
&& sec
->output_section
)
2416 highword
= bfinfdpic_got_section (info
)->output_section
->vma
2417 + bfinfdpic_got_section (info
)->output_offset
2418 + bfinfdpic_got_initial_offset (info
);
2420 else if (entry
->lazyplt
)
2425 fd_lazy_rel_offset
= ofst
;
2427 /* A function descriptor used for lazy or local resolving is
2428 initialized such that its high word contains the output
2429 section index in which the PLT entries are located, and
2430 the low word contains the address of the lazy PLT entry
2431 entry point, that must be within the memory region
2432 assigned to that section. */
2433 lowword
= entry
->lzplt_entry
+ 4
2434 + bfinfdpic_plt_section (info
)->output_offset
2435 + bfinfdpic_plt_section (info
)->output_section
->vma
;
2436 highword
= _bfinfdpic_osec_to_segment
2437 (output_bfd
, bfinfdpic_plt_section (info
)->output_section
);
2441 /* A function descriptor for a local function gets the index
2442 of the section. For a non-local function, it's
2446 || (entry
->symndx
== -1 && entry
->d
.h
->dynindx
!= -1
2447 && entry
->d
.h
->dynindx
== idx
))
2450 highword
= _bfinfdpic_osec_to_segment
2451 (output_bfd
, sec
->output_section
);
2454 bfd_put_32 (output_bfd
, lowword
,
2455 bfinfdpic_got_section (info
)->contents
2456 + bfinfdpic_got_initial_offset (info
)
2458 bfd_put_32 (output_bfd
, highword
,
2459 bfinfdpic_got_section (info
)->contents
2460 + bfinfdpic_got_initial_offset (info
)
2461 + entry
->fd_entry
+ 4);
2464 /* Generate code for the PLT entry. */
2465 if (entry
->plt_entry
!= (bfd_vma
) -1)
2467 bfd_byte
*plt_code
= bfinfdpic_plt_section (info
)->contents
2470 BFD_ASSERT (entry
->fd_entry
);
2472 /* Figure out what kind of PLT entry we need, depending on the
2473 location of the function descriptor within the GOT. */
2474 if (entry
->fd_entry
>= -(1 << (18 - 1))
2475 && entry
->fd_entry
+ 4 < (1 << (18 - 1)))
2477 /* P1 = [P3 + fd_entry]; P3 = [P3 + fd_entry + 4] */
2478 bfd_put_32 (output_bfd
,
2479 0xe519 | ((entry
->fd_entry
<< 14) & 0xFFFF0000),
2481 bfd_put_32 (output_bfd
,
2482 0xe51b | (((entry
->fd_entry
+ 4) << 14) & 0xFFFF0000),
2488 /* P1.L = fd_entry; P1.H = fd_entry;
2492 bfd_put_32 (output_bfd
,
2493 0xe109 | (entry
->fd_entry
<< 16),
2495 bfd_put_32 (output_bfd
,
2496 0xe149 | (entry
->fd_entry
& 0xFFFF0000),
2498 bfd_put_16 (output_bfd
, 0x5ad9, plt_code
+ 8);
2499 bfd_put_16 (output_bfd
, 0x9159, plt_code
+ 10);
2500 bfd_put_16 (output_bfd
, 0xac5b, plt_code
+ 12);
2504 bfd_put_16 (output_bfd
, 0x0051, plt_code
);
2507 /* Generate code for the lazy PLT entry. */
2508 if (entry
->lzplt_entry
!= (bfd_vma
) -1)
2510 bfd_byte
*lzplt_code
= bfinfdpic_plt_section (info
)->contents
2511 + entry
->lzplt_entry
;
2512 bfd_vma resolverStub_addr
;
2514 bfd_put_32 (output_bfd
, fd_lazy_rel_offset
, lzplt_code
);
2517 resolverStub_addr
= entry
->lzplt_entry
/ BFINFDPIC_LZPLT_BLOCK_SIZE
2518 * BFINFDPIC_LZPLT_BLOCK_SIZE
+ BFINFDPIC_LZPLT_RESOLV_LOC
;
2519 if (resolverStub_addr
>= bfinfdpic_plt_initial_offset (info
))
2520 resolverStub_addr
= bfinfdpic_plt_initial_offset (info
) - LZPLT_NORMAL_SIZE
- LZPLT_RESOLVER_EXTRA
;
2522 if (entry
->lzplt_entry
== resolverStub_addr
)
2524 /* This is a lazy PLT entry that includes a resolver call.
2528 bfd_put_32 (output_bfd
,
2531 bfd_put_16 (output_bfd
, 0x0052, lzplt_code
+ 4);
2535 /* JUMP.S resolverStub */
2536 bfd_put_16 (output_bfd
,
2538 | (((resolverStub_addr
- entry
->lzplt_entry
)
2539 / 2) & (((bfd_vma
)1 << 12) - 1)),
2547 /* Relocate an Blackfin ELF section.
2549 The RELOCATE_SECTION function is called by the new ELF backend linker
2550 to handle the relocations for a section.
2552 The relocs are always passed as Rela structures; if the section
2553 actually uses Rel structures, the r_addend field will always be
2556 This function is responsible for adjusting the section contents as
2557 necessary, and (if using Rela relocs and generating a relocatable
2558 output file) adjusting the reloc addend as necessary.
2560 This function does not have to worry about setting the reloc
2561 address or the reloc symbol index.
2563 LOCAL_SYMS is a pointer to the swapped in local symbols.
2565 LOCAL_SECTIONS is an array giving the section in the input file
2566 corresponding to the st_shndx field of each local symbol.
2568 The global hash table entry for the global symbols can be found
2569 via elf_sym_hashes (input_bfd).
2571 When generating relocatable output, this function must handle
2572 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2573 going to be the section symbol corresponding to the output
2574 section, which means that the addend must be adjusted
2578 bfinfdpic_relocate_section (bfd
* output_bfd
,
2579 struct bfd_link_info
*info
,
2581 asection
* input_section
,
2582 bfd_byte
* contents
,
2583 Elf_Internal_Rela
* relocs
,
2584 Elf_Internal_Sym
* local_syms
,
2585 asection
** local_sections
)
2587 Elf_Internal_Shdr
*symtab_hdr
;
2588 struct elf_link_hash_entry
**sym_hashes
;
2589 Elf_Internal_Rela
*rel
;
2590 Elf_Internal_Rela
*relend
;
2591 unsigned isec_segment
, got_segment
, plt_segment
,
2593 int silence_segment_error
= !(info
->shared
|| info
->pie
);
2595 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
2596 sym_hashes
= elf_sym_hashes (input_bfd
);
2597 relend
= relocs
+ input_section
->reloc_count
;
2599 isec_segment
= _bfinfdpic_osec_to_segment (output_bfd
,
2600 input_section
->output_section
);
2601 if (IS_FDPIC (output_bfd
) && bfinfdpic_got_section (info
))
2602 got_segment
= _bfinfdpic_osec_to_segment (output_bfd
,
2603 bfinfdpic_got_section (info
)
2607 if (IS_FDPIC (output_bfd
) && elf_hash_table (info
)->dynamic_sections_created
)
2608 plt_segment
= _bfinfdpic_osec_to_segment (output_bfd
,
2609 bfinfdpic_plt_section (info
)
2614 for (rel
= relocs
; rel
< relend
; rel
++)
2616 reloc_howto_type
*howto
;
2617 unsigned long r_symndx
;
2618 Elf_Internal_Sym
*sym
;
2620 struct elf_link_hash_entry
*h
;
2622 bfd_reloc_status_type r
;
2623 const char * name
= NULL
;
2626 struct bfinfdpic_relocs_info
*picrel
;
2627 bfd_vma orig_addend
= rel
->r_addend
;
2629 r_type
= ELF32_R_TYPE (rel
->r_info
);
2631 if (r_type
== R_BFIN_GNU_VTINHERIT
2632 || r_type
== R_BFIN_GNU_VTENTRY
)
2635 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2636 howto
= bfin_reloc_type_lookup (input_bfd
, r_type
);
2639 bfd_set_error (bfd_error_bad_value
);
2647 if (r_symndx
< symtab_hdr
->sh_info
)
2649 sym
= local_syms
+ r_symndx
;
2650 osec
= sec
= local_sections
[r_symndx
];
2651 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2653 name
= bfd_elf_string_from_elf_section
2654 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
2655 name
= (name
== NULL
) ? bfd_section_name (input_bfd
, sec
) : name
;
2660 bfd_boolean unresolved_reloc
;
2662 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2663 r_symndx
, symtab_hdr
, sym_hashes
,
2665 unresolved_reloc
, warned
);
2669 if (sec
!= NULL
&& discarded_section (sec
))
2670 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2671 rel
, 1, relend
, howto
, 0, contents
);
2673 if (info
->relocatable
)
2677 && (h
->root
.type
== bfd_link_hash_defined
2678 || h
->root
.type
== bfd_link_hash_defweak
)
2679 && !BFINFDPIC_SYM_LOCAL (info
, h
))
2687 case R_BFIN_PCREL24
:
2688 case R_BFIN_PCREL24_JUMP_L
:
2689 case R_BFIN_BYTE4_DATA
:
2690 if (! IS_FDPIC (output_bfd
))
2693 case R_BFIN_GOT17M4
:
2696 case R_BFIN_FUNCDESC_GOT17M4
:
2697 case R_BFIN_FUNCDESC_GOTHI
:
2698 case R_BFIN_FUNCDESC_GOTLO
:
2699 case R_BFIN_GOTOFF17M4
:
2700 case R_BFIN_GOTOFFHI
:
2701 case R_BFIN_GOTOFFLO
:
2702 case R_BFIN_FUNCDESC_GOTOFF17M4
:
2703 case R_BFIN_FUNCDESC_GOTOFFHI
:
2704 case R_BFIN_FUNCDESC_GOTOFFLO
:
2705 case R_BFIN_FUNCDESC
:
2706 case R_BFIN_FUNCDESC_VALUE
:
2708 picrel
= bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info
2709 (info
), input_bfd
, h
,
2710 orig_addend
, INSERT
);
2712 /* In order to find the entry we created before, we must
2713 use the original addend, not the one that may have been
2714 modified by _bfd_elf_rela_local_sym(). */
2715 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
2716 (info
), input_bfd
, r_symndx
,
2717 orig_addend
, INSERT
);
2721 if (!_bfinfdpic_emit_got_relocs_plt_entries (picrel
, output_bfd
, info
,
2725 (*_bfd_error_handler
)
2726 (_("%B: relocation at `%A+0x%x' references symbol `%s' with nonzero addend"),
2727 input_bfd
, input_section
, rel
->r_offset
, name
);
2737 if (h
&& ! BFINFDPIC_SYM_LOCAL (info
, h
)
2738 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2739 rel
->r_offset
) != (bfd_vma
) -1)
2741 info
->callbacks
->warning
2742 (info
, _("relocation references symbol not defined in the module"),
2743 name
, input_bfd
, input_section
, rel
->r_offset
);
2751 case R_BFIN_PCREL24
:
2752 case R_BFIN_PCREL24_JUMP_L
:
2753 check_segment
[0] = isec_segment
;
2754 if (! IS_FDPIC (output_bfd
))
2755 check_segment
[1] = isec_segment
;
2756 else if (picrel
->plt
)
2758 relocation
= bfinfdpic_plt_section (info
)->output_section
->vma
2759 + bfinfdpic_plt_section (info
)->output_offset
2760 + picrel
->plt_entry
;
2761 check_segment
[1] = plt_segment
;
2763 /* We don't want to warn on calls to undefined weak symbols,
2764 as calls to them must be protected by non-NULL tests
2765 anyway, and unprotected calls would invoke undefined
2767 else if (picrel
->symndx
== -1
2768 && picrel
->d
.h
->root
.type
== bfd_link_hash_undefweak
)
2769 check_segment
[1] = check_segment
[0];
2771 check_segment
[1] = sec
2772 ? _bfinfdpic_osec_to_segment (output_bfd
, sec
->output_section
)
2776 case R_BFIN_GOT17M4
:
2779 relocation
= picrel
->got_entry
;
2780 check_segment
[0] = check_segment
[1] = got_segment
;
2783 case R_BFIN_FUNCDESC_GOT17M4
:
2784 case R_BFIN_FUNCDESC_GOTHI
:
2785 case R_BFIN_FUNCDESC_GOTLO
:
2786 relocation
= picrel
->fdgot_entry
;
2787 check_segment
[0] = check_segment
[1] = got_segment
;
2790 case R_BFIN_GOTOFFHI
:
2791 case R_BFIN_GOTOFF17M4
:
2792 case R_BFIN_GOTOFFLO
:
2793 relocation
-= bfinfdpic_got_section (info
)->output_section
->vma
2794 + bfinfdpic_got_section (info
)->output_offset
2795 + bfinfdpic_got_initial_offset (info
);
2796 check_segment
[0] = got_segment
;
2797 check_segment
[1] = sec
2798 ? _bfinfdpic_osec_to_segment (output_bfd
, sec
->output_section
)
2802 case R_BFIN_FUNCDESC_GOTOFF17M4
:
2803 case R_BFIN_FUNCDESC_GOTOFFHI
:
2804 case R_BFIN_FUNCDESC_GOTOFFLO
:
2805 relocation
= picrel
->fd_entry
;
2806 check_segment
[0] = check_segment
[1] = got_segment
;
2809 case R_BFIN_FUNCDESC
:
2812 bfd_vma addend
= rel
->r_addend
;
2814 if (! (h
&& h
->root
.type
== bfd_link_hash_undefweak
2815 && BFINFDPIC_SYM_LOCAL (info
, h
)))
2817 /* If the symbol is dynamic and there may be dynamic
2818 symbol resolution because we are or are linked with a
2819 shared library, emit a FUNCDESC relocation such that
2820 the dynamic linker will allocate the function
2821 descriptor. If the symbol needs a non-local function
2822 descriptor but binds locally (e.g., its visibility is
2823 protected, emit a dynamic relocation decayed to
2825 if (h
&& ! BFINFDPIC_FUNCDESC_LOCAL (info
, h
)
2826 && BFINFDPIC_SYM_LOCAL (info
, h
)
2827 && !(info
->executable
&& !info
->pie
))
2829 dynindx
= elf_section_data (h
->root
.u
.def
.section
2830 ->output_section
)->dynindx
;
2831 addend
+= h
->root
.u
.def
.section
->output_offset
2832 + h
->root
.u
.def
.value
;
2834 else if (h
&& ! BFINFDPIC_FUNCDESC_LOCAL (info
, h
))
2838 info
->callbacks
->warning
2839 (info
, _("R_BFIN_FUNCDESC references dynamic symbol with nonzero addend"),
2840 name
, input_bfd
, input_section
, rel
->r_offset
);
2843 dynindx
= h
->dynindx
;
2847 /* Otherwise, we know we have a private function
2848 descriptor, so reference it directly. */
2849 BFD_ASSERT (picrel
->privfd
);
2850 r_type
= R_BFIN_BYTE4_DATA
;
2851 dynindx
= elf_section_data (bfinfdpic_got_section (info
)
2852 ->output_section
)->dynindx
;
2853 addend
= bfinfdpic_got_section (info
)->output_offset
2854 + bfinfdpic_got_initial_offset (info
)
2858 /* If there is room for dynamic symbol resolution, emit
2859 the dynamic relocation. However, if we're linking an
2860 executable at a fixed location, we won't have emitted a
2861 dynamic symbol entry for the got section, so idx will
2862 be zero, which means we can and should compute the
2863 address of the private descriptor ourselves. */
2864 if (info
->executable
&& !info
->pie
2865 && (!h
|| BFINFDPIC_FUNCDESC_LOCAL (info
, h
)))
2869 addend
+= bfinfdpic_got_section (info
)->output_section
->vma
;
2870 if ((bfd_get_section_flags (output_bfd
,
2871 input_section
->output_section
)
2872 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
2874 if (_bfinfdpic_osec_readonly_p (output_bfd
,
2878 info
->callbacks
->warning
2880 _("cannot emit fixups in read-only section"),
2881 name
, input_bfd
, input_section
, rel
->r_offset
);
2885 offset
= _bfd_elf_section_offset
2887 input_section
, rel
->r_offset
);
2889 if (offset
!= (bfd_vma
)-1)
2890 _bfinfdpic_add_rofixup (output_bfd
,
2891 bfinfdpic_gotfixup_section
2893 offset
+ input_section
2894 ->output_section
->vma
2895 + input_section
->output_offset
,
2899 else if ((bfd_get_section_flags (output_bfd
,
2900 input_section
->output_section
)
2901 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
2905 if (_bfinfdpic_osec_readonly_p (output_bfd
,
2909 info
->callbacks
->warning
2911 _("cannot emit dynamic relocations in read-only section"),
2912 name
, input_bfd
, input_section
, rel
->r_offset
);
2915 offset
= _bfd_elf_section_offset (output_bfd
, info
,
2916 input_section
, rel
->r_offset
);
2918 if (offset
!= (bfd_vma
)-1)
2919 _bfinfdpic_add_dyn_reloc (output_bfd
,
2920 bfinfdpic_gotrel_section (info
),
2921 offset
+ input_section
2922 ->output_section
->vma
2923 + input_section
->output_offset
,
2925 dynindx
, addend
, picrel
);
2928 addend
+= bfinfdpic_got_section (info
)->output_section
->vma
;
2931 /* We want the addend in-place because dynamic
2932 relocations are REL. Setting relocation to it should
2933 arrange for it to be installed. */
2934 relocation
= addend
- rel
->r_addend
;
2936 check_segment
[0] = check_segment
[1] = got_segment
;
2939 case R_BFIN_BYTE4_DATA
:
2940 if (! IS_FDPIC (output_bfd
))
2942 check_segment
[0] = check_segment
[1] = -1;
2946 case R_BFIN_FUNCDESC_VALUE
:
2949 bfd_vma addend
= rel
->r_addend
;
2951 offset
= _bfd_elf_section_offset (output_bfd
, info
,
2952 input_section
, rel
->r_offset
);
2954 /* If the symbol is dynamic but binds locally, use
2956 if (h
&& ! BFINFDPIC_SYM_LOCAL (info
, h
))
2958 if (addend
&& r_type
== R_BFIN_FUNCDESC_VALUE
)
2960 info
->callbacks
->warning
2961 (info
, _("R_BFIN_FUNCDESC_VALUE references dynamic symbol with nonzero addend"),
2962 name
, input_bfd
, input_section
, rel
->r_offset
);
2965 dynindx
= h
->dynindx
;
2970 addend
+= h
->root
.u
.def
.value
;
2972 addend
+= sym
->st_value
;
2974 addend
+= osec
->output_offset
;
2975 if (osec
&& osec
->output_section
2976 && ! bfd_is_abs_section (osec
->output_section
)
2977 && ! bfd_is_und_section (osec
->output_section
))
2978 dynindx
= elf_section_data (osec
->output_section
)->dynindx
;
2983 /* If we're linking an executable at a fixed address, we
2984 can omit the dynamic relocation as long as the symbol
2985 is defined in the current link unit (which is implied
2986 by its output section not being NULL). */
2987 if (info
->executable
&& !info
->pie
2988 && (!h
|| BFINFDPIC_SYM_LOCAL (info
, h
)))
2991 addend
+= osec
->output_section
->vma
;
2992 if (IS_FDPIC (input_bfd
)
2993 && (bfd_get_section_flags (output_bfd
,
2994 input_section
->output_section
)
2995 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
2997 if (_bfinfdpic_osec_readonly_p (output_bfd
,
3001 info
->callbacks
->warning
3003 _("cannot emit fixups in read-only section"),
3004 name
, input_bfd
, input_section
, rel
->r_offset
);
3007 if (!h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
3009 if (offset
!= (bfd_vma
)-1)
3011 _bfinfdpic_add_rofixup (output_bfd
,
3012 bfinfdpic_gotfixup_section
3014 offset
+ input_section
3015 ->output_section
->vma
3016 + input_section
->output_offset
,
3019 if (r_type
== R_BFIN_FUNCDESC_VALUE
)
3020 _bfinfdpic_add_rofixup
3022 bfinfdpic_gotfixup_section (info
),
3023 offset
+ input_section
->output_section
->vma
3024 + input_section
->output_offset
+ 4, picrel
);
3031 if ((bfd_get_section_flags (output_bfd
,
3032 input_section
->output_section
)
3033 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
3035 if (_bfinfdpic_osec_readonly_p (output_bfd
,
3039 info
->callbacks
->warning
3041 _("cannot emit dynamic relocations in read-only section"),
3042 name
, input_bfd
, input_section
, rel
->r_offset
);
3046 if (offset
!= (bfd_vma
)-1)
3047 _bfinfdpic_add_dyn_reloc (output_bfd
,
3048 bfinfdpic_gotrel_section (info
),
3050 + input_section
->output_section
->vma
3051 + input_section
->output_offset
,
3052 r_type
, dynindx
, addend
, picrel
);
3055 addend
+= osec
->output_section
->vma
;
3056 /* We want the addend in-place because dynamic
3057 relocations are REL. Setting relocation to it
3058 should arrange for it to be installed. */
3059 relocation
= addend
- rel
->r_addend
;
3062 if (r_type
== R_BFIN_FUNCDESC_VALUE
)
3064 /* If we've omitted the dynamic relocation, just emit
3065 the fixed addresses of the symbol and of the local
3067 if (info
->executable
&& !info
->pie
3068 && (!h
|| BFINFDPIC_SYM_LOCAL (info
, h
)))
3069 bfd_put_32 (output_bfd
,
3070 bfinfdpic_got_section (info
)->output_section
->vma
3071 + bfinfdpic_got_section (info
)->output_offset
3072 + bfinfdpic_got_initial_offset (info
),
3073 contents
+ rel
->r_offset
+ 4);
3075 /* A function descriptor used for lazy or local
3076 resolving is initialized such that its high word
3077 contains the output section index in which the
3078 PLT entries are located, and the low word
3079 contains the offset of the lazy PLT entry entry
3080 point into that section. */
3081 bfd_put_32 (output_bfd
,
3082 h
&& ! BFINFDPIC_SYM_LOCAL (info
, h
)
3084 : _bfinfdpic_osec_to_segment (output_bfd
,
3087 contents
+ rel
->r_offset
+ 4);
3090 check_segment
[0] = check_segment
[1] = got_segment
;
3094 check_segment
[0] = isec_segment
;
3095 check_segment
[1] = sec
3096 ? _bfinfdpic_osec_to_segment (output_bfd
, sec
->output_section
)
3101 if (check_segment
[0] != check_segment
[1] && IS_FDPIC (output_bfd
))
3103 #if 1 /* If you take this out, remove the #error from fdpic-static-6.d
3104 in the ld testsuite. */
3105 /* This helps catch problems in GCC while we can't do more
3106 than static linking. The idea is to test whether the
3107 input file basename is crt0.o only once. */
3108 if (silence_segment_error
== 1)
3109 silence_segment_error
=
3110 (strlen (input_bfd
->filename
) == 6
3111 && filename_cmp (input_bfd
->filename
, "crt0.o") == 0)
3112 || (strlen (input_bfd
->filename
) > 6
3113 && filename_cmp (input_bfd
->filename
3114 + strlen (input_bfd
->filename
) - 7,
3118 if (!silence_segment_error
3119 /* We don't want duplicate errors for undefined
3121 && !(picrel
&& picrel
->symndx
== -1
3122 && picrel
->d
.h
->root
.type
== bfd_link_hash_undefined
))
3123 info
->callbacks
->warning
3125 (info
->shared
|| info
->pie
)
3126 ? _("relocations between different segments are not supported")
3127 : _("warning: relocation references a different segment"),
3128 name
, input_bfd
, input_section
, rel
->r_offset
);
3129 if (!silence_segment_error
&& (info
->shared
|| info
->pie
))
3131 elf_elfheader (output_bfd
)->e_flags
|= EF_BFIN_PIC
;
3136 case R_BFIN_GOTOFFHI
:
3137 /* We need the addend to be applied before we shift the
3139 relocation
+= rel
->r_addend
;
3142 case R_BFIN_FUNCDESC_GOTHI
:
3143 case R_BFIN_FUNCDESC_GOTOFFHI
:
3148 case R_BFIN_FUNCDESC_GOTLO
:
3149 case R_BFIN_GOTOFFLO
:
3150 case R_BFIN_FUNCDESC_GOTOFFLO
:
3151 relocation
&= 0xffff;
3160 case R_BFIN_PCREL24
:
3161 case R_BFIN_PCREL24_JUMP_L
:
3162 if (! IS_FDPIC (output_bfd
) || ! picrel
->plt
)
3166 /* When referencing a GOT entry, a function descriptor or a
3167 PLT, we don't want the addend to apply to the reference,
3168 but rather to the referenced symbol. The actual entry
3169 will have already been created taking the addend into
3170 account, so cancel it out here. */
3171 case R_BFIN_GOT17M4
:
3174 case R_BFIN_FUNCDESC_GOT17M4
:
3175 case R_BFIN_FUNCDESC_GOTHI
:
3176 case R_BFIN_FUNCDESC_GOTLO
:
3177 case R_BFIN_FUNCDESC_GOTOFF17M4
:
3178 case R_BFIN_FUNCDESC_GOTOFFHI
:
3179 case R_BFIN_FUNCDESC_GOTOFFLO
:
3180 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF17M4
3181 here, since we do want to apply the addend to the others.
3182 Note that we've applied the addend to GOTOFFHI before we
3183 shifted it right. */
3184 case R_BFIN_GOTOFFHI
:
3185 relocation
-= rel
->r_addend
;
3192 r
= bfin_final_link_relocate (rel
, howto
, input_bfd
, input_section
,
3193 contents
, rel
->r_offset
,
3194 relocation
, rel
->r_addend
);
3196 if (r
!= bfd_reloc_ok
)
3198 const char * msg
= (const char *) NULL
;
3202 case bfd_reloc_overflow
:
3203 r
= info
->callbacks
->reloc_overflow
3204 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3205 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
3208 case bfd_reloc_undefined
:
3209 r
= info
->callbacks
->undefined_symbol
3210 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
3213 case bfd_reloc_outofrange
:
3214 msg
= _("internal error: out of range error");
3217 case bfd_reloc_notsupported
:
3218 msg
= _("internal error: unsupported relocation error");
3221 case bfd_reloc_dangerous
:
3222 msg
= _("internal error: dangerous relocation");
3226 msg
= _("internal error: unknown error");
3231 r
= info
->callbacks
->warning
3232 (info
, msg
, name
, input_bfd
, input_section
, rel
->r_offset
);
3242 /* Update the relocation information for the relocations of the section
3246 bfinfdpic_gc_sweep_hook (bfd
*abfd
,
3247 struct bfd_link_info
*info
,
3249 const Elf_Internal_Rela
*relocs
)
3251 Elf_Internal_Shdr
*symtab_hdr
;
3252 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
3253 const Elf_Internal_Rela
*rel
;
3254 const Elf_Internal_Rela
*rel_end
;
3255 struct bfinfdpic_relocs_info
*picrel
;
3257 BFD_ASSERT (IS_FDPIC (abfd
));
3259 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3260 sym_hashes
= elf_sym_hashes (abfd
);
3261 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/sizeof(Elf32_External_Sym
);
3262 if (!elf_bad_symtab (abfd
))
3263 sym_hashes_end
-= symtab_hdr
->sh_info
;
3265 rel_end
= relocs
+ sec
->reloc_count
;
3266 for (rel
= relocs
; rel
< rel_end
; rel
++)
3268 struct elf_link_hash_entry
*h
;
3269 unsigned long r_symndx
;
3271 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3272 if (r_symndx
< symtab_hdr
->sh_info
)
3275 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3278 picrel
= bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info
),
3280 rel
->r_addend
, NO_INSERT
);
3282 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
3283 (info
), abfd
, r_symndx
,
3284 rel
->r_addend
, NO_INSERT
);
3289 switch (ELF32_R_TYPE (rel
->r_info
))
3291 case R_BFIN_PCREL24
:
3292 case R_BFIN_PCREL24_JUMP_L
:
3296 case R_BFIN_FUNCDESC_VALUE
:
3297 picrel
->relocsfdv
--;
3298 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
3302 case R_BFIN_BYTE4_DATA
:
3304 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
3308 case R_BFIN_GOT17M4
:
3317 case R_BFIN_FUNCDESC_GOT17M4
:
3318 picrel
->fdgot17m4
--;
3321 case R_BFIN_FUNCDESC_GOTHI
:
3322 case R_BFIN_FUNCDESC_GOTLO
:
3323 picrel
->fdgothilo
--;
3326 case R_BFIN_GOTOFF17M4
:
3327 case R_BFIN_GOTOFFHI
:
3328 case R_BFIN_GOTOFFLO
:
3332 case R_BFIN_FUNCDESC_GOTOFF17M4
:
3333 picrel
->fdgoff17m4
--;
3336 case R_BFIN_FUNCDESC_GOTOFFHI
:
3337 case R_BFIN_FUNCDESC_GOTOFFLO
:
3338 picrel
->fdgoffhilo
--;
3341 case R_BFIN_FUNCDESC
:
3354 /* We need dynamic symbols for every section, since segments can
3355 relocate independently. */
3357 _bfinfdpic_link_omit_section_dynsym (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3358 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3361 switch (elf_section_data (p
)->this_hdr
.sh_type
)
3365 /* If sh_type is yet undecided, assume it could be
3366 SHT_PROGBITS/SHT_NOBITS. */
3370 /* There shouldn't be section relative relocations
3371 against any other section. */
3377 /* Create a .got section, as well as its additional info field. This
3378 is almost entirely copied from
3379 elflink.c:_bfd_elf_create_got_section(). */
3382 _bfin_create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
3384 flagword flags
, pltflags
;
3386 struct elf_link_hash_entry
*h
;
3387 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3390 /* This function may be called more than once. */
3391 s
= bfd_get_linker_section (abfd
, ".got");
3395 /* Machine specific: although pointers are 32-bits wide, we want the
3396 GOT to be aligned to a 64-bit boundary, such that function
3397 descriptors in it can be accessed with 64-bit loads and
3401 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3402 | SEC_LINKER_CREATED
);
3405 s
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
3407 || !bfd_set_section_alignment (abfd
, s
, ptralign
))
3410 if (bed
->want_got_plt
)
3412 s
= bfd_make_section_anyway_with_flags (abfd
, ".got.plt", flags
);
3414 || !bfd_set_section_alignment (abfd
, s
, ptralign
))
3418 if (bed
->want_got_sym
)
3420 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
3421 (or .got.plt) section. We don't do this in the linker script
3422 because we don't want to define the symbol if we are not creating
3423 a global offset table. */
3424 h
= _bfd_elf_define_linkage_sym (abfd
, info
, s
, "__GLOBAL_OFFSET_TABLE_");
3425 elf_hash_table (info
)->hgot
= h
;
3429 /* Machine-specific: we want the symbol for executables as
3431 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3435 /* The first bit of the global offset table is the header. */
3436 s
->size
+= bed
->got_header_size
;
3438 /* This is the machine-specific part. Create and initialize section
3439 data for the got. */
3440 if (IS_FDPIC (abfd
))
3442 bfinfdpic_got_section (info
) = s
;
3443 bfinfdpic_relocs_info (info
) = htab_try_create (1,
3444 bfinfdpic_relocs_info_hash
,
3445 bfinfdpic_relocs_info_eq
,
3447 if (! bfinfdpic_relocs_info (info
))
3450 s
= bfd_make_section_anyway_with_flags (abfd
, ".rel.got",
3451 (flags
| SEC_READONLY
));
3453 || ! bfd_set_section_alignment (abfd
, s
, 2))
3456 bfinfdpic_gotrel_section (info
) = s
;
3458 /* Machine-specific. */
3459 s
= bfd_make_section_anyway_with_flags (abfd
, ".rofixup",
3460 (flags
| SEC_READONLY
));
3462 || ! bfd_set_section_alignment (abfd
, s
, 2))
3465 bfinfdpic_gotfixup_section (info
) = s
;
3468 pltflags
|= SEC_CODE
;
3469 if (bed
->plt_not_loaded
)
3470 pltflags
&= ~ (SEC_CODE
| SEC_LOAD
| SEC_HAS_CONTENTS
);
3471 if (bed
->plt_readonly
)
3472 pltflags
|= SEC_READONLY
;
3474 s
= bfd_make_section_anyway_with_flags (abfd
, ".plt", pltflags
);
3476 || ! bfd_set_section_alignment (abfd
, s
, bed
->plt_alignment
))
3478 /* Blackfin-specific: remember it. */
3479 bfinfdpic_plt_section (info
) = s
;
3481 if (bed
->want_plt_sym
)
3483 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
3485 struct bfd_link_hash_entry
*bh
= NULL
;
3487 if (! (_bfd_generic_link_add_one_symbol
3488 (info
, abfd
, "__PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
, 0, NULL
,
3489 FALSE
, get_elf_backend_data (abfd
)->collect
, &bh
)))
3491 h
= (struct elf_link_hash_entry
*) bh
;
3493 h
->type
= STT_OBJECT
;
3495 if (! info
->executable
3496 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
3500 /* Blackfin-specific: we want rel relocations for the plt. */
3501 s
= bfd_make_section_anyway_with_flags (abfd
, ".rel.plt",
3502 flags
| SEC_READONLY
);
3504 || ! bfd_set_section_alignment (abfd
, s
, bed
->s
->log_file_align
))
3506 /* Blackfin-specific: remember it. */
3507 bfinfdpic_pltrel_section (info
) = s
;
3512 /* Make sure the got and plt sections exist, and that our pointers in
3513 the link hash table point to them. */
3516 elf32_bfinfdpic_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3518 /* This is mostly copied from
3519 elflink.c:_bfd_elf_create_dynamic_sections(). */
3522 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3524 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3525 | SEC_LINKER_CREATED
);
3527 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
3528 .rel[a].bss sections. */
3530 /* Blackfin-specific: we want to create the GOT in the Blackfin way. */
3531 if (! _bfin_create_got_section (abfd
, info
))
3534 /* Blackfin-specific: make sure we created everything we wanted. */
3535 BFD_ASSERT (bfinfdpic_got_section (info
) && bfinfdpic_gotrel_section (info
)
3536 /* && bfinfdpic_gotfixup_section (info) */
3537 && bfinfdpic_plt_section (info
)
3538 && bfinfdpic_pltrel_section (info
));
3540 if (bed
->want_dynbss
)
3542 /* The .dynbss section is a place to put symbols which are defined
3543 by dynamic objects, are referenced by regular objects, and are
3544 not functions. We must allocate space for them in the process
3545 image and use a R_*_COPY reloc to tell the dynamic linker to
3546 initialize them at run time. The linker script puts the .dynbss
3547 section into the .bss section of the final image. */
3548 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynbss",
3549 SEC_ALLOC
| SEC_LINKER_CREATED
);
3553 /* The .rel[a].bss section holds copy relocs. This section is not
3554 normally needed. We need to create it here, though, so that the
3555 linker will map it to an output section. We can't just create it
3556 only if we need it, because we will not know whether we need it
3557 until we have seen all the input files, and the first time the
3558 main linker code calls BFD after examining all the input files
3559 (size_dynamic_sections) the input sections have already been
3560 mapped to the output sections. If the section turns out not to
3561 be needed, we can discard it later. We will never need this
3562 section when generating a shared object, since they do not use
3566 s
= bfd_make_section_anyway_with_flags (abfd
,
3568 flags
| SEC_READONLY
);
3570 || ! bfd_set_section_alignment (abfd
, s
, bed
->s
->log_file_align
))
3578 /* Compute the total GOT size required by each symbol in each range.
3579 Symbols may require up to 4 words in the GOT: an entry pointing to
3580 the symbol, an entry pointing to its function descriptor, and a
3581 private function descriptors taking two words. */
3584 _bfinfdpic_count_nontls_entries (struct bfinfdpic_relocs_info
*entry
,
3585 struct _bfinfdpic_dynamic_got_info
*dinfo
)
3587 /* Allocate space for a GOT entry pointing to the symbol. */
3589 dinfo
->got17m4
+= 4;
3590 else if (entry
->gothilo
)
3591 dinfo
->gothilo
+= 4;
3596 /* Allocate space for a GOT entry pointing to the function
3598 if (entry
->fdgot17m4
)
3599 dinfo
->got17m4
+= 4;
3600 else if (entry
->fdgothilo
)
3601 dinfo
->gothilo
+= 4;
3606 /* Decide whether we need a PLT entry, a function descriptor in the
3607 GOT, and a lazy PLT entry for this symbol. */
3608 entry
->plt
= entry
->call
3609 && entry
->symndx
== -1 && ! BFINFDPIC_SYM_LOCAL (dinfo
->info
, entry
->d
.h
)
3610 && elf_hash_table (dinfo
->info
)->dynamic_sections_created
;
3611 entry
->privfd
= entry
->plt
3612 || entry
->fdgoff17m4
|| entry
->fdgoffhilo
3613 || ((entry
->fd
|| entry
->fdgot17m4
|| entry
->fdgothilo
)
3614 && (entry
->symndx
!= -1
3615 || BFINFDPIC_FUNCDESC_LOCAL (dinfo
->info
, entry
->d
.h
)));
3616 entry
->lazyplt
= entry
->privfd
3617 && entry
->symndx
== -1 && ! BFINFDPIC_SYM_LOCAL (dinfo
->info
, entry
->d
.h
)
3618 && ! (dinfo
->info
->flags
& DF_BIND_NOW
)
3619 && elf_hash_table (dinfo
->info
)->dynamic_sections_created
;
3621 /* Allocate space for a function descriptor. */
3622 if (entry
->fdgoff17m4
)
3624 else if (entry
->privfd
&& entry
->plt
)
3626 else if (entry
->privfd
)
3633 dinfo
->lzplt
+= LZPLT_NORMAL_SIZE
;
3636 /* Compute the number of dynamic relocations and fixups that a symbol
3637 requires, and add (or subtract) from the grand and per-symbol
3641 _bfinfdpic_count_relocs_fixups (struct bfinfdpic_relocs_info
*entry
,
3642 struct _bfinfdpic_dynamic_got_info
*dinfo
,
3643 bfd_boolean subtract
)
3645 bfd_vma relocs
= 0, fixups
= 0;
3647 if (!dinfo
->info
->executable
|| dinfo
->info
->pie
)
3648 relocs
= entry
->relocs32
+ entry
->relocsfd
+ entry
->relocsfdv
;
3651 if (entry
->symndx
!= -1 || BFINFDPIC_SYM_LOCAL (dinfo
->info
, entry
->d
.h
))
3653 if (entry
->symndx
!= -1
3654 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
3655 fixups
+= entry
->relocs32
+ 2 * entry
->relocsfdv
;
3658 relocs
+= entry
->relocs32
+ entry
->relocsfdv
;
3660 if (entry
->symndx
!= -1
3661 || BFINFDPIC_FUNCDESC_LOCAL (dinfo
->info
, entry
->d
.h
))
3663 if (entry
->symndx
!= -1
3664 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
3665 fixups
+= entry
->relocsfd
;
3668 relocs
+= entry
->relocsfd
;
3677 entry
->dynrelocs
+= relocs
;
3678 entry
->fixups
+= fixups
;
3679 dinfo
->relocs
+= relocs
;
3680 dinfo
->fixups
+= fixups
;
3683 /* Compute the total GOT and PLT size required by each symbol in each range. *
3684 Symbols may require up to 4 words in the GOT: an entry pointing to
3685 the symbol, an entry pointing to its function descriptor, and a
3686 private function descriptors taking two words. */
3689 _bfinfdpic_count_got_plt_entries (void **entryp
, void *dinfo_
)
3691 struct bfinfdpic_relocs_info
*entry
= *entryp
;
3692 struct _bfinfdpic_dynamic_got_info
*dinfo
= dinfo_
;
3694 _bfinfdpic_count_nontls_entries (entry
, dinfo
);
3696 _bfinfdpic_count_relocs_fixups (entry
, dinfo
, FALSE
);
3701 /* This structure is used to assign offsets to got entries, function
3702 descriptors, plt entries and lazy plt entries. */
3704 struct _bfinfdpic_dynamic_got_plt_info
3706 /* Summary information collected with _bfinfdpic_count_got_plt_entries. */
3707 struct _bfinfdpic_dynamic_got_info g
;
3709 /* For each addressable range, we record a MAX (positive) and MIN
3710 (negative) value. CUR is used to assign got entries, and it's
3711 incremented from an initial positive value to MAX, then from MIN
3712 to FDCUR (unless FDCUR wraps around first). FDCUR is used to
3713 assign function descriptors, and it's decreased from an initial
3714 non-positive value to MIN, then from MAX down to CUR (unless CUR
3715 wraps around first). All of MIN, MAX, CUR and FDCUR always point
3716 to even words. ODD, if non-zero, indicates an odd word to be
3717 used for the next got entry, otherwise CUR is used and
3718 incremented by a pair of words, wrapping around when it reaches
3719 MAX. FDCUR is decremented (and wrapped) before the next function
3720 descriptor is chosen. FDPLT indicates the number of remaining
3721 slots that can be used for function descriptors used only by PLT
3723 struct _bfinfdpic_dynamic_got_alloc_data
3725 bfd_signed_vma max
, cur
, odd
, fdcur
, min
;
3730 /* Determine the positive and negative ranges to be used by each
3731 offset range in the GOT. FDCUR and CUR, that must be aligned to a
3732 double-word boundary, are the minimum (negative) and maximum
3733 (positive) GOT offsets already used by previous ranges, except for
3734 an ODD entry that may have been left behind. GOT and FD indicate
3735 the size of GOT entries and function descriptors that must be
3736 placed within the range from -WRAP to WRAP. If there's room left,
3737 up to FDPLT bytes should be reserved for additional function
3740 inline static bfd_signed_vma
3741 _bfinfdpic_compute_got_alloc_data (struct _bfinfdpic_dynamic_got_alloc_data
*gad
,
3742 bfd_signed_vma fdcur
,
3750 bfd_signed_vma wrapmin
= -wrap
;
3752 /* Start at the given initial points. */
3756 /* If we had an incoming odd word and we have any got entries that
3757 are going to use it, consume it, otherwise leave gad->odd at
3758 zero. We might force gad->odd to zero and return the incoming
3759 odd such that it is used by the next range, but then GOT entries
3760 might appear to be out of order and we wouldn't be able to
3761 shorten the GOT by one word if it turns out to end with an
3762 unpaired GOT entry. */
3772 /* If we're left with an unpaired GOT entry, compute its location
3773 such that we can return it. Otherwise, if got doesn't require an
3774 odd number of words here, either odd was already zero in the
3775 block above, or it was set to zero because got was non-zero, or
3776 got was already zero. In the latter case, we want the value of
3777 odd to carry over to the return statement, so we don't want to
3778 reset odd unless the condition below is true. */
3785 /* Compute the tentative boundaries of this range. */
3786 gad
->max
= cur
+ got
;
3787 gad
->min
= fdcur
- fd
;
3790 /* If function descriptors took too much space, wrap some of them
3792 if (gad
->min
< wrapmin
)
3794 gad
->max
+= wrapmin
- gad
->min
;
3797 /* If there is space left and we have function descriptors
3798 referenced in PLT entries that could take advantage of shorter
3799 offsets, place them here. */
3800 else if (fdplt
&& gad
->min
> wrapmin
)
3803 if ((bfd_vma
) (gad
->min
- wrapmin
) < fdplt
)
3804 fds
= gad
->min
- wrapmin
;
3813 /* If GOT entries took too much space, wrap some of them around.
3814 This may well cause gad->min to become lower than wrapmin. This
3815 will cause a relocation overflow later on, so we don't have to
3817 if ((bfd_vma
) gad
->max
> wrap
)
3819 gad
->min
-= gad
->max
- wrap
;
3822 /* If there is more space left, try to place some more function
3823 descriptors for PLT entries. */
3824 else if (fdplt
&& (bfd_vma
) gad
->max
< wrap
)
3827 if ((bfd_vma
) (wrap
- gad
->max
) < fdplt
)
3828 fds
= wrap
- gad
->max
;
3837 /* If odd was initially computed as an offset past the wrap point,
3840 odd
= gad
->min
+ odd
- gad
->max
;
3842 /* _bfinfdpic_get_got_entry() below will always wrap gad->cur if needed
3843 before returning, so do it here too. This guarantees that,
3844 should cur and fdcur meet at the wrap point, they'll both be
3846 if (gad
->cur
== gad
->max
)
3847 gad
->cur
= gad
->min
;
3852 /* Compute the location of the next GOT entry, given the allocation
3853 data for a range. */
3855 inline static bfd_signed_vma
3856 _bfinfdpic_get_got_entry (struct _bfinfdpic_dynamic_got_alloc_data
*gad
)
3862 /* If there was an odd word left behind, use it. */
3868 /* Otherwise, use the word pointed to by cur, reserve the next
3869 as an odd word, and skip to the next pair of words, possibly
3872 gad
->odd
= gad
->cur
+ 4;
3874 if (gad
->cur
== gad
->max
)
3875 gad
->cur
= gad
->min
;
3881 /* Compute the location of the next function descriptor entry in the
3882 GOT, given the allocation data for a range. */
3884 inline static bfd_signed_vma
3885 _bfinfdpic_get_fd_entry (struct _bfinfdpic_dynamic_got_alloc_data
*gad
)
3887 /* If we're at the bottom, wrap around, and only then allocate the
3888 next pair of words. */
3889 if (gad
->fdcur
== gad
->min
)
3890 gad
->fdcur
= gad
->max
;
3891 return gad
->fdcur
-= 8;
3894 /* Assign GOT offsets for every GOT entry and function descriptor.
3895 Doing everything in a single pass is tricky. */
3898 _bfinfdpic_assign_got_entries (void **entryp
, void *info_
)
3900 struct bfinfdpic_relocs_info
*entry
= *entryp
;
3901 struct _bfinfdpic_dynamic_got_plt_info
*dinfo
= info_
;
3904 entry
->got_entry
= _bfinfdpic_get_got_entry (&dinfo
->got17m4
);
3905 else if (entry
->gothilo
)
3906 entry
->got_entry
= _bfinfdpic_get_got_entry (&dinfo
->gothilo
);
3908 if (entry
->fdgot17m4
)
3909 entry
->fdgot_entry
= _bfinfdpic_get_got_entry (&dinfo
->got17m4
);
3910 else if (entry
->fdgothilo
)
3911 entry
->fdgot_entry
= _bfinfdpic_get_got_entry (&dinfo
->gothilo
);
3913 if (entry
->fdgoff17m4
)
3914 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->got17m4
);
3915 else if (entry
->plt
&& dinfo
->got17m4
.fdplt
)
3917 dinfo
->got17m4
.fdplt
-= 8;
3918 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->got17m4
);
3920 else if (entry
->plt
)
3922 dinfo
->gothilo
.fdplt
-= 8;
3923 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->gothilo
);
3925 else if (entry
->privfd
)
3926 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->gothilo
);
3931 /* Assign GOT offsets to private function descriptors used by PLT
3932 entries (or referenced by 32-bit offsets), as well as PLT entries
3933 and lazy PLT entries. */
3936 _bfinfdpic_assign_plt_entries (void **entryp
, void *info_
)
3938 struct bfinfdpic_relocs_info
*entry
= *entryp
;
3939 struct _bfinfdpic_dynamic_got_plt_info
*dinfo
= info_
;
3941 /* If this symbol requires a local function descriptor, allocate
3943 if (entry
->privfd
&& entry
->fd_entry
== 0)
3945 if (dinfo
->got17m4
.fdplt
)
3947 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->got17m4
);
3948 dinfo
->got17m4
.fdplt
-= 8;
3952 BFD_ASSERT (dinfo
->gothilo
.fdplt
);
3953 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->gothilo
);
3954 dinfo
->gothilo
.fdplt
-= 8;
3962 /* We use the section's raw size to mark the location of the
3964 entry
->plt_entry
= bfinfdpic_plt_section (dinfo
->g
.info
)->size
;
3966 /* Figure out the length of this PLT entry based on the
3967 addressing mode we need to reach the function descriptor. */
3968 BFD_ASSERT (entry
->fd_entry
);
3969 if (entry
->fd_entry
>= -(1 << (18 - 1))
3970 && entry
->fd_entry
+ 4 < (1 << (18 - 1)))
3975 bfinfdpic_plt_section (dinfo
->g
.info
)->size
+= size
;
3980 entry
->lzplt_entry
= dinfo
->g
.lzplt
;
3981 dinfo
->g
.lzplt
+= LZPLT_NORMAL_SIZE
;
3982 /* If this entry is the one that gets the resolver stub, account
3983 for the additional instruction. */
3984 if (entry
->lzplt_entry
% BFINFDPIC_LZPLT_BLOCK_SIZE
3985 == BFINFDPIC_LZPLT_RESOLV_LOC
)
3986 dinfo
->g
.lzplt
+= LZPLT_RESOLVER_EXTRA
;
3992 /* Cancel out any effects of calling _bfinfdpic_assign_got_entries and
3993 _bfinfdpic_assign_plt_entries. */
3996 _bfinfdpic_reset_got_plt_entries (void **entryp
, void *ignore ATTRIBUTE_UNUSED
)
3998 struct bfinfdpic_relocs_info
*entry
= *entryp
;
4000 entry
->got_entry
= 0;
4001 entry
->fdgot_entry
= 0;
4002 entry
->fd_entry
= 0;
4003 entry
->plt_entry
= (bfd_vma
)-1;
4004 entry
->lzplt_entry
= (bfd_vma
)-1;
4009 /* Follow indirect and warning hash entries so that each got entry
4010 points to the final symbol definition. P must point to a pointer
4011 to the hash table we're traversing. Since this traversal may
4012 modify the hash table, we set this pointer to NULL to indicate
4013 we've made a potentially-destructive change to the hash table, so
4014 the traversal must be restarted. */
4016 _bfinfdpic_resolve_final_relocs_info (void **entryp
, void *p
)
4018 struct bfinfdpic_relocs_info
*entry
= *entryp
;
4021 if (entry
->symndx
== -1)
4023 struct elf_link_hash_entry
*h
= entry
->d
.h
;
4024 struct bfinfdpic_relocs_info
*oentry
;
4026 while (h
->root
.type
== bfd_link_hash_indirect
4027 || h
->root
.type
== bfd_link_hash_warning
)
4028 h
= (struct elf_link_hash_entry
*)h
->root
.u
.i
.link
;
4030 if (entry
->d
.h
== h
)
4033 oentry
= bfinfdpic_relocs_info_for_global (*htab
, 0, h
, entry
->addend
,
4038 /* Merge the two entries. */
4039 bfinfdpic_pic_merge_early_relocs_info (oentry
, entry
);
4040 htab_clear_slot (*htab
, entryp
);
4046 /* If we can't find this entry with the new bfd hash, re-insert
4047 it, and get the traversal restarted. */
4048 if (! htab_find (*htab
, entry
))
4050 htab_clear_slot (*htab
, entryp
);
4051 entryp
= htab_find_slot (*htab
, entry
, INSERT
);
4054 /* Abort the traversal, since the whole table may have
4055 moved, and leave it up to the parent to restart the
4057 *(htab_t
*)p
= NULL
;
4065 /* Compute the total size of the GOT, the PLT, the dynamic relocations
4066 section and the rofixup section. Assign locations for GOT and PLT
4070 _bfinfdpic_size_got_plt (bfd
*output_bfd
,
4071 struct _bfinfdpic_dynamic_got_plt_info
*gpinfop
)
4075 struct bfd_link_info
*info
= gpinfop
->g
.info
;
4076 bfd
*dynobj
= elf_hash_table (info
)->dynobj
;
4078 memcpy (bfinfdpic_dynamic_got_plt_info (info
), &gpinfop
->g
,
4079 sizeof (gpinfop
->g
));
4082 /* Compute the total size taken by entries in the 18-bit range,
4083 to tell how many PLT function descriptors we can bring into it
4084 without causing it to overflow. */
4085 limit
= odd
+ gpinfop
->g
.got17m4
+ gpinfop
->g
.fd17m4
;
4086 if (limit
< (bfd_vma
)1 << 18)
4087 limit
= ((bfd_vma
)1 << 18) - limit
;
4090 if (gpinfop
->g
.fdplt
< limit
)
4091 limit
= gpinfop
->g
.fdplt
;
4093 /* Determine the ranges of GOT offsets that we can use for each
4094 range of addressing modes. */
4095 odd
= _bfinfdpic_compute_got_alloc_data (&gpinfop
->got17m4
,
4102 (bfd_vma
)1 << (18-1));
4103 odd
= _bfinfdpic_compute_got_alloc_data (&gpinfop
->gothilo
,
4104 gpinfop
->got17m4
.min
,
4106 gpinfop
->got17m4
.max
,
4109 gpinfop
->g
.fdplt
- gpinfop
->got17m4
.fdplt
,
4110 (bfd_vma
)1 << (32-1));
4112 /* Now assign (most) GOT offsets. */
4113 htab_traverse (bfinfdpic_relocs_info (info
), _bfinfdpic_assign_got_entries
,
4116 bfinfdpic_got_section (info
)->size
= gpinfop
->gothilo
.max
4117 - gpinfop
->gothilo
.min
4118 /* If an odd word is the last word of the GOT, we don't need this
4119 word to be part of the GOT. */
4120 - (odd
+ 4 == gpinfop
->gothilo
.max
? 4 : 0);
4121 if (bfinfdpic_got_section (info
)->size
== 0)
4122 bfinfdpic_got_section (info
)->flags
|= SEC_EXCLUDE
;
4123 else if (bfinfdpic_got_section (info
)->size
== 12
4124 && ! elf_hash_table (info
)->dynamic_sections_created
)
4126 bfinfdpic_got_section (info
)->flags
|= SEC_EXCLUDE
;
4127 bfinfdpic_got_section (info
)->size
= 0;
4131 bfinfdpic_got_section (info
)->contents
=
4132 (bfd_byte
*) bfd_zalloc (dynobj
,
4133 bfinfdpic_got_section (info
)->size
);
4134 if (bfinfdpic_got_section (info
)->contents
== NULL
)
4138 if (elf_hash_table (info
)->dynamic_sections_created
)
4139 /* Subtract the number of lzplt entries, since those will generate
4140 relocations in the pltrel section. */
4141 bfinfdpic_gotrel_section (info
)->size
=
4142 (gpinfop
->g
.relocs
- gpinfop
->g
.lzplt
/ LZPLT_NORMAL_SIZE
)
4143 * get_elf_backend_data (output_bfd
)->s
->sizeof_rel
;
4145 BFD_ASSERT (gpinfop
->g
.relocs
== 0);
4146 if (bfinfdpic_gotrel_section (info
)->size
== 0)
4147 bfinfdpic_gotrel_section (info
)->flags
|= SEC_EXCLUDE
;
4150 bfinfdpic_gotrel_section (info
)->contents
=
4151 (bfd_byte
*) bfd_zalloc (dynobj
,
4152 bfinfdpic_gotrel_section (info
)->size
);
4153 if (bfinfdpic_gotrel_section (info
)->contents
== NULL
)
4157 bfinfdpic_gotfixup_section (info
)->size
= (gpinfop
->g
.fixups
+ 1) * 4;
4158 if (bfinfdpic_gotfixup_section (info
)->size
== 0)
4159 bfinfdpic_gotfixup_section (info
)->flags
|= SEC_EXCLUDE
;
4162 bfinfdpic_gotfixup_section (info
)->contents
=
4163 (bfd_byte
*) bfd_zalloc (dynobj
,
4164 bfinfdpic_gotfixup_section (info
)->size
);
4165 if (bfinfdpic_gotfixup_section (info
)->contents
== NULL
)
4169 if (elf_hash_table (info
)->dynamic_sections_created
)
4170 bfinfdpic_pltrel_section (info
)->size
=
4171 gpinfop
->g
.lzplt
/ LZPLT_NORMAL_SIZE
* get_elf_backend_data (output_bfd
)->s
->sizeof_rel
;
4172 if (bfinfdpic_pltrel_section (info
)->size
== 0)
4173 bfinfdpic_pltrel_section (info
)->flags
|= SEC_EXCLUDE
;
4176 bfinfdpic_pltrel_section (info
)->contents
=
4177 (bfd_byte
*) bfd_zalloc (dynobj
,
4178 bfinfdpic_pltrel_section (info
)->size
);
4179 if (bfinfdpic_pltrel_section (info
)->contents
== NULL
)
4183 /* Add 4 bytes for every block of at most 65535 lazy PLT entries,
4184 such that there's room for the additional instruction needed to
4185 call the resolver. Since _bfinfdpic_assign_got_entries didn't
4186 account for them, our block size is 4 bytes smaller than the real
4188 if (elf_hash_table (info
)->dynamic_sections_created
)
4190 bfinfdpic_plt_section (info
)->size
= gpinfop
->g
.lzplt
4191 + ((gpinfop
->g
.lzplt
+ (BFINFDPIC_LZPLT_BLOCK_SIZE
- 4) - LZPLT_NORMAL_SIZE
)
4192 / (BFINFDPIC_LZPLT_BLOCK_SIZE
- 4) * LZPLT_RESOLVER_EXTRA
);
4195 /* Reset it, such that _bfinfdpic_assign_plt_entries() can use it to
4196 actually assign lazy PLT entries addresses. */
4197 gpinfop
->g
.lzplt
= 0;
4199 /* Save information that we're going to need to generate GOT and PLT
4201 bfinfdpic_got_initial_offset (info
) = -gpinfop
->gothilo
.min
;
4203 if (get_elf_backend_data (output_bfd
)->want_got_sym
)
4204 elf_hash_table (info
)->hgot
->root
.u
.def
.value
4205 = bfinfdpic_got_initial_offset (info
);
4207 if (elf_hash_table (info
)->dynamic_sections_created
)
4208 bfinfdpic_plt_initial_offset (info
) =
4209 bfinfdpic_plt_section (info
)->size
;
4211 htab_traverse (bfinfdpic_relocs_info (info
), _bfinfdpic_assign_plt_entries
,
4214 /* Allocate the PLT section contents only after
4215 _bfinfdpic_assign_plt_entries has a chance to add the size of the
4216 non-lazy PLT entries. */
4217 if (bfinfdpic_plt_section (info
)->size
== 0)
4218 bfinfdpic_plt_section (info
)->flags
|= SEC_EXCLUDE
;
4221 bfinfdpic_plt_section (info
)->contents
=
4222 (bfd_byte
*) bfd_zalloc (dynobj
,
4223 bfinfdpic_plt_section (info
)->size
);
4224 if (bfinfdpic_plt_section (info
)->contents
== NULL
)
4231 /* Set the sizes of the dynamic sections. */
4234 elf32_bfinfdpic_size_dynamic_sections (bfd
*output_bfd
,
4235 struct bfd_link_info
*info
)
4237 struct elf_link_hash_table
*htab
;
4240 struct _bfinfdpic_dynamic_got_plt_info gpinfo
;
4242 htab
= elf_hash_table (info
);
4243 dynobj
= htab
->dynobj
;
4244 BFD_ASSERT (dynobj
!= NULL
);
4246 if (htab
->dynamic_sections_created
)
4248 /* Set the contents of the .interp section to the interpreter. */
4249 if (info
->executable
)
4251 s
= bfd_get_linker_section (dynobj
, ".interp");
4252 BFD_ASSERT (s
!= NULL
);
4253 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
4254 s
->contents
= (bfd_byte
*) ELF_DYNAMIC_INTERPRETER
;
4258 memset (&gpinfo
, 0, sizeof (gpinfo
));
4259 gpinfo
.g
.info
= info
;
4263 htab_t relocs
= bfinfdpic_relocs_info (info
);
4265 htab_traverse (relocs
, _bfinfdpic_resolve_final_relocs_info
, &relocs
);
4267 if (relocs
== bfinfdpic_relocs_info (info
))
4271 htab_traverse (bfinfdpic_relocs_info (info
), _bfinfdpic_count_got_plt_entries
,
4274 /* Allocate space to save the summary information, we're going to
4275 use it if we're doing relaxations. */
4276 bfinfdpic_dynamic_got_plt_info (info
) = bfd_alloc (dynobj
, sizeof (gpinfo
.g
));
4278 if (!_bfinfdpic_size_got_plt (output_bfd
, &gpinfo
))
4281 if (elf_hash_table (info
)->dynamic_sections_created
)
4283 if (bfinfdpic_got_section (info
)->size
)
4284 if (!_bfd_elf_add_dynamic_entry (info
, DT_PLTGOT
, 0))
4287 if (bfinfdpic_pltrel_section (info
)->size
)
4288 if (!_bfd_elf_add_dynamic_entry (info
, DT_PLTRELSZ
, 0)
4289 || !_bfd_elf_add_dynamic_entry (info
, DT_PLTREL
, DT_REL
)
4290 || !_bfd_elf_add_dynamic_entry (info
, DT_JMPREL
, 0))
4293 if (bfinfdpic_gotrel_section (info
)->size
)
4294 if (!_bfd_elf_add_dynamic_entry (info
, DT_REL
, 0)
4295 || !_bfd_elf_add_dynamic_entry (info
, DT_RELSZ
, 0)
4296 || !_bfd_elf_add_dynamic_entry (info
, DT_RELENT
,
4297 sizeof (Elf32_External_Rel
)))
4301 s
= bfd_get_linker_section (dynobj
, ".dynbss");
4302 if (s
&& s
->size
== 0)
4303 s
->flags
|= SEC_EXCLUDE
;
4305 s
= bfd_get_linker_section (dynobj
, ".rela.bss");
4306 if (s
&& s
->size
== 0)
4307 s
->flags
|= SEC_EXCLUDE
;
4313 elf32_bfinfdpic_always_size_sections (bfd
*output_bfd
,
4314 struct bfd_link_info
*info
)
4316 if (!info
->relocatable
)
4318 struct elf_link_hash_entry
*h
;
4320 /* Force a PT_GNU_STACK segment to be created. */
4321 if (! elf_tdata (output_bfd
)->stack_flags
)
4322 elf_tdata (output_bfd
)->stack_flags
= PF_R
| PF_W
| PF_X
;
4324 /* Define __stacksize if it's not defined yet. */
4325 h
= elf_link_hash_lookup (elf_hash_table (info
), "__stacksize",
4326 FALSE
, FALSE
, FALSE
);
4327 if (! h
|| h
->root
.type
!= bfd_link_hash_defined
4328 || h
->type
!= STT_OBJECT
4331 struct bfd_link_hash_entry
*bh
= NULL
;
4333 if (!(_bfd_generic_link_add_one_symbol
4334 (info
, output_bfd
, "__stacksize",
4335 BSF_GLOBAL
, bfd_abs_section_ptr
, DEFAULT_STACK_SIZE
,
4336 (const char *) NULL
, FALSE
,
4337 get_elf_backend_data (output_bfd
)->collect
, &bh
)))
4340 h
= (struct elf_link_hash_entry
*) bh
;
4342 h
->type
= STT_OBJECT
;
4349 /* Check whether any of the relocations was optimized away, and
4350 subtract it from the relocation or fixup count. */
4352 _bfinfdpic_check_discarded_relocs (bfd
*abfd
, asection
*sec
,
4353 struct bfd_link_info
*info
,
4355 bfd_boolean
*changed
)
4357 Elf_Internal_Shdr
*symtab_hdr
;
4358 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4359 Elf_Internal_Rela
*rel
, *erel
;
4361 if ((sec
->flags
& SEC_RELOC
) == 0
4362 || sec
->reloc_count
== 0)
4365 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4366 sym_hashes
= elf_sym_hashes (abfd
);
4367 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/sizeof(Elf32_External_Sym
);
4368 if (!elf_bad_symtab (abfd
))
4369 sym_hashes_end
-= symtab_hdr
->sh_info
;
4371 rel
= elf_section_data (sec
)->relocs
;
4373 /* Now examine each relocation. */
4374 for (erel
= rel
+ sec
->reloc_count
; rel
< erel
; rel
++)
4376 struct elf_link_hash_entry
*h
;
4377 unsigned long r_symndx
;
4378 struct bfinfdpic_relocs_info
*picrel
;
4379 struct _bfinfdpic_dynamic_got_info
*dinfo
;
4381 if (ELF32_R_TYPE (rel
->r_info
) != R_BFIN_BYTE4_DATA
4382 && ELF32_R_TYPE (rel
->r_info
) != R_BFIN_FUNCDESC
)
4385 if (_bfd_elf_section_offset (sec
->output_section
->owner
,
4386 info
, sec
, rel
->r_offset
)
4390 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4391 if (r_symndx
< symtab_hdr
->sh_info
)
4395 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4396 while (h
->root
.type
== bfd_link_hash_indirect
4397 || h
->root
.type
== bfd_link_hash_warning
)
4398 h
= (struct elf_link_hash_entry
*)h
->root
.u
.i
.link
;
4402 picrel
= bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info
),
4404 rel
->r_addend
, NO_INSERT
);
4406 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info (info
),
4408 rel
->r_addend
, NO_INSERT
);
4414 dinfo
= bfinfdpic_dynamic_got_plt_info (info
);
4416 _bfinfdpic_count_relocs_fixups (picrel
, dinfo
, TRUE
);
4417 if (ELF32_R_TYPE (rel
->r_info
) == R_BFIN_BYTE4_DATA
)
4419 else /* we know (ELF32_R_TYPE (rel->r_info) == R_BFIN_FUNCDESC) */
4421 _bfinfdpic_count_relocs_fixups (picrel
, dinfo
, FALSE
);
4428 bfinfdpic_elf_discard_info (bfd
*ibfd
,
4429 struct elf_reloc_cookie
*cookie ATTRIBUTE_UNUSED
,
4430 struct bfd_link_info
*info
)
4432 bfd_boolean changed
= FALSE
;
4436 /* Account for relaxation of .eh_frame section. */
4437 for (s
= ibfd
->sections
; s
; s
= s
->next
)
4438 if (s
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
)
4440 if (!_bfinfdpic_check_discarded_relocs (ibfd
, s
, info
, &changed
))
4442 obfd
= s
->output_section
->owner
;
4447 struct _bfinfdpic_dynamic_got_plt_info gpinfo
;
4449 memset (&gpinfo
, 0, sizeof (gpinfo
));
4450 memcpy (&gpinfo
.g
, bfinfdpic_dynamic_got_plt_info (info
),
4453 /* Clear GOT and PLT assignments. */
4454 htab_traverse (bfinfdpic_relocs_info (info
),
4455 _bfinfdpic_reset_got_plt_entries
,
4458 if (!_bfinfdpic_size_got_plt (obfd
, &gpinfo
))
4466 elf32_bfinfdpic_modify_program_headers (bfd
*output_bfd
,
4467 struct bfd_link_info
*info
)
4469 struct elf_obj_tdata
*tdata
= elf_tdata (output_bfd
);
4470 struct elf_segment_map
*m
;
4471 Elf_Internal_Phdr
*p
;
4473 /* objcopy and strip preserve what's already there using
4474 elf32_bfinfdpic_copy_private_bfd_data (). */
4478 for (p
= tdata
->phdr
, m
= tdata
->segment_map
; m
!= NULL
; m
= m
->next
, p
++)
4479 if (m
->p_type
== PT_GNU_STACK
)
4484 struct elf_link_hash_entry
*h
;
4486 /* Obtain the pointer to the __stacksize symbol. */
4487 h
= elf_link_hash_lookup (elf_hash_table (info
), "__stacksize",
4488 FALSE
, FALSE
, FALSE
);
4491 while (h
->root
.type
== bfd_link_hash_indirect
4492 || h
->root
.type
== bfd_link_hash_warning
)
4493 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4494 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
4497 /* Set the header p_memsz from the symbol value. We
4498 intentionally ignore the symbol section. */
4499 if (h
&& h
->root
.type
== bfd_link_hash_defined
)
4500 p
->p_memsz
= h
->root
.u
.def
.value
;
4502 p
->p_memsz
= DEFAULT_STACK_SIZE
;
4511 elf32_bfinfdpic_finish_dynamic_sections (bfd
*output_bfd
,
4512 struct bfd_link_info
*info
)
4517 dynobj
= elf_hash_table (info
)->dynobj
;
4519 if (bfinfdpic_got_section (info
))
4521 BFD_ASSERT (bfinfdpic_gotrel_section (info
)->size
4522 == (bfinfdpic_gotrel_section (info
)->reloc_count
4523 * sizeof (Elf32_External_Rel
)));
4525 if (bfinfdpic_gotfixup_section (info
))
4527 struct elf_link_hash_entry
*hgot
= elf_hash_table (info
)->hgot
;
4528 bfd_vma got_value
= hgot
->root
.u
.def
.value
4529 + hgot
->root
.u
.def
.section
->output_section
->vma
4530 + hgot
->root
.u
.def
.section
->output_offset
;
4532 _bfinfdpic_add_rofixup (output_bfd
, bfinfdpic_gotfixup_section (info
),
4535 if (bfinfdpic_gotfixup_section (info
)->size
4536 != (bfinfdpic_gotfixup_section (info
)->reloc_count
* 4))
4538 (*_bfd_error_handler
)
4539 ("LINKER BUG: .rofixup section size mismatch");
4544 if (elf_hash_table (info
)->dynamic_sections_created
)
4546 BFD_ASSERT (bfinfdpic_pltrel_section (info
)->size
4547 == (bfinfdpic_pltrel_section (info
)->reloc_count
4548 * sizeof (Elf32_External_Rel
)));
4551 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
4553 if (elf_hash_table (info
)->dynamic_sections_created
)
4555 Elf32_External_Dyn
* dyncon
;
4556 Elf32_External_Dyn
* dynconend
;
4558 BFD_ASSERT (sdyn
!= NULL
);
4560 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
4561 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
4563 for (; dyncon
< dynconend
; dyncon
++)
4565 Elf_Internal_Dyn dyn
;
4567 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
4575 dyn
.d_un
.d_ptr
= bfinfdpic_got_section (info
)->output_section
->vma
4576 + bfinfdpic_got_section (info
)->output_offset
4577 + bfinfdpic_got_initial_offset (info
);
4578 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4582 dyn
.d_un
.d_ptr
= bfinfdpic_pltrel_section (info
)
4583 ->output_section
->vma
4584 + bfinfdpic_pltrel_section (info
)->output_offset
;
4585 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4589 dyn
.d_un
.d_val
= bfinfdpic_pltrel_section (info
)->size
;
4590 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4599 /* Adjust a symbol defined by a dynamic object and referenced by a
4603 elf32_bfinfdpic_adjust_dynamic_symbol
4604 (struct bfd_link_info
*info
,
4605 struct elf_link_hash_entry
*h
)
4609 dynobj
= elf_hash_table (info
)->dynobj
;
4611 /* Make sure we know what is going on here. */
4612 BFD_ASSERT (dynobj
!= NULL
4613 && (h
->u
.weakdef
!= NULL
4616 && !h
->def_regular
)));
4618 /* If this is a weak symbol, and there is a real definition, the
4619 processor independent code will have arranged for us to see the
4620 real definition first, and we can just use the same value. */
4621 if (h
->u
.weakdef
!= NULL
)
4623 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
4624 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
4625 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
4626 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
4632 /* Perform any actions needed for dynamic symbols. */
4635 elf32_bfinfdpic_finish_dynamic_symbol
4636 (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4637 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4638 struct elf_link_hash_entry
*h ATTRIBUTE_UNUSED
,
4639 Elf_Internal_Sym
*sym ATTRIBUTE_UNUSED
)
4644 /* Decide whether to attempt to turn absptr or lsda encodings in
4645 shared libraries into pcrel within the given input section. */
4648 bfinfdpic_elf_use_relative_eh_frame
4649 (bfd
*input_bfd ATTRIBUTE_UNUSED
,
4650 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4651 asection
*eh_frame_section ATTRIBUTE_UNUSED
)
4653 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
4657 /* Adjust the contents of an eh_frame_hdr section before they're output. */
4660 bfinfdpic_elf_encode_eh_address (bfd
*abfd
,
4661 struct bfd_link_info
*info
,
4662 asection
*osec
, bfd_vma offset
,
4663 asection
*loc_sec
, bfd_vma loc_offset
,
4666 struct elf_link_hash_entry
*h
;
4668 h
= elf_hash_table (info
)->hgot
;
4669 BFD_ASSERT (h
&& h
->root
.type
== bfd_link_hash_defined
);
4671 if (! h
|| (_bfinfdpic_osec_to_segment (abfd
, osec
)
4672 == _bfinfdpic_osec_to_segment (abfd
, loc_sec
->output_section
)))
4673 return _bfd_elf_encode_eh_address (abfd
, info
, osec
, offset
,
4674 loc_sec
, loc_offset
, encoded
);
4676 BFD_ASSERT (_bfinfdpic_osec_to_segment (abfd
, osec
)
4677 == (_bfinfdpic_osec_to_segment
4678 (abfd
, h
->root
.u
.def
.section
->output_section
)));
4680 *encoded
= osec
->vma
+ offset
4681 - (h
->root
.u
.def
.value
4682 + h
->root
.u
.def
.section
->output_section
->vma
4683 + h
->root
.u
.def
.section
->output_offset
);
4685 return DW_EH_PE_datarel
| DW_EH_PE_sdata4
;
4690 /* Look through the relocs for a section during the first phase.
4692 Besides handling virtual table relocs for gc, we have to deal with
4693 all sorts of PIC-related relocations. We describe below the
4694 general plan on how to handle such relocations, even though we only
4695 collect information at this point, storing them in hash tables for
4696 perusal of later passes.
4698 32 relocations are propagated to the linker output when creating
4699 position-independent output. LO16 and HI16 relocations are not
4700 supposed to be encountered in this case.
4702 LABEL16 should always be resolvable by the linker, since it's only
4705 LABEL24, on the other hand, is used by calls. If it turns out that
4706 the target of a call is a dynamic symbol, a PLT entry must be
4707 created for it, which triggers the creation of a private function
4708 descriptor and, unless lazy binding is disabled, a lazy PLT entry.
4710 GPREL relocations require the referenced symbol to be in the same
4711 segment as _gp, but this can only be checked later.
4713 All GOT, GOTOFF and FUNCDESC relocations require a .got section to
4714 exist. LABEL24 might as well, since it may require a PLT entry,
4715 that will require a got.
4717 Non-FUNCDESC GOT relocations require a GOT entry to be created
4718 regardless of whether the symbol is dynamic. However, since a
4719 global symbol that turns out to not be exported may have the same
4720 address of a non-dynamic symbol, we don't assign GOT entries at
4721 this point, such that we can share them in this case. A relocation
4722 for the GOT entry always has to be created, be it to offset a
4723 private symbol by the section load address, be it to get the symbol
4724 resolved dynamically.
4726 FUNCDESC GOT relocations require a GOT entry to be created, and
4727 handled as if a FUNCDESC relocation was applied to the GOT entry in
4730 FUNCDESC relocations referencing a symbol that turns out to NOT be
4731 dynamic cause a private function descriptor to be created. The
4732 FUNCDESC relocation then decays to a 32 relocation that points at
4733 the private descriptor. If the symbol is dynamic, the FUNCDESC
4734 relocation is propagated to the linker output, such that the
4735 dynamic linker creates the canonical descriptor, pointing to the
4736 dynamically-resolved definition of the function.
4738 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic
4739 symbols that are assigned to the same segment as the GOT, but we
4740 can only check this later, after we know the complete set of
4741 symbols defined and/or exported.
4743 FUNCDESC GOTOFF relocations require a function descriptor to be
4744 created and, unless lazy binding is disabled or the symbol is not
4745 dynamic, a lazy PLT entry. Since we can't tell at this point
4746 whether a symbol is going to be dynamic, we have to decide later
4747 whether to create a lazy PLT entry or bind the descriptor directly
4748 to the private function.
4750 FUNCDESC_VALUE relocations are not supposed to be present in object
4751 files, but they may very well be simply propagated to the linker
4752 output, since they have no side effect.
4755 A function descriptor always requires a FUNCDESC_VALUE relocation.
4756 Whether it's in .plt.rel or not depends on whether lazy binding is
4757 enabled and on whether the referenced symbol is dynamic.
4759 The existence of a lazy PLT requires the resolverStub lazy PLT
4760 entry to be present.
4763 As for assignment of GOT, PLT and lazy PLT entries, and private
4764 descriptors, we might do them all sequentially, but we can do
4765 better than that. For example, we can place GOT entries and
4766 private function descriptors referenced using 12-bit operands
4767 closer to the PIC register value, such that these relocations don't
4768 overflow. Those that are only referenced with LO16 relocations
4769 could come next, but we may as well place PLT-required function
4770 descriptors in the 12-bit range to make them shorter. Symbols
4771 referenced with LO16/HI16 may come next, but we may place
4772 additional function descriptors in the 16-bit range if we can
4773 reliably tell that we've already placed entries that are ever
4774 referenced with only LO16. PLT entries are therefore generated as
4775 small as possible, while not introducing relocation overflows in
4776 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be
4777 generated before or after PLT entries, but not intermingled with
4778 them, such that we can have more lazy PLT entries in range for a
4779 branch to the resolverStub. The resolverStub should be emitted at
4780 the most distant location from the first lazy PLT entry such that
4781 it's still in range for a branch, or closer, if there isn't a need
4782 for so many lazy PLT entries. Additional lazy PLT entries may be
4783 emitted after the resolverStub, as long as branches are still in
4784 range. If the branch goes out of range, longer lazy PLT entries
4787 We could further optimize PLT and lazy PLT entries by giving them
4788 priority in assignment to closer-to-gr17 locations depending on the
4789 number of occurrences of references to them (assuming a function
4790 that's called more often is more important for performance, so its
4791 PLT entry should be faster), or taking hints from the compiler.
4792 Given infinite time and money... :-) */
4795 bfinfdpic_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4796 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4798 Elf_Internal_Shdr
*symtab_hdr
;
4799 struct elf_link_hash_entry
**sym_hashes
;
4800 const Elf_Internal_Rela
*rel
;
4801 const Elf_Internal_Rela
*rel_end
;
4803 struct bfinfdpic_relocs_info
*picrel
;
4805 if (info
->relocatable
)
4808 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4809 sym_hashes
= elf_sym_hashes (abfd
);
4811 dynobj
= elf_hash_table (info
)->dynobj
;
4812 rel_end
= relocs
+ sec
->reloc_count
;
4813 for (rel
= relocs
; rel
< rel_end
; rel
++)
4815 struct elf_link_hash_entry
*h
;
4816 unsigned long r_symndx
;
4818 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4819 if (r_symndx
< symtab_hdr
->sh_info
)
4822 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4824 switch (ELF32_R_TYPE (rel
->r_info
))
4826 case R_BFIN_GOT17M4
:
4829 case R_BFIN_FUNCDESC_GOT17M4
:
4830 case R_BFIN_FUNCDESC_GOTHI
:
4831 case R_BFIN_FUNCDESC_GOTLO
:
4832 case R_BFIN_GOTOFF17M4
:
4833 case R_BFIN_GOTOFFHI
:
4834 case R_BFIN_GOTOFFLO
:
4835 case R_BFIN_FUNCDESC_GOTOFF17M4
:
4836 case R_BFIN_FUNCDESC_GOTOFFHI
:
4837 case R_BFIN_FUNCDESC_GOTOFFLO
:
4838 case R_BFIN_FUNCDESC
:
4839 case R_BFIN_FUNCDESC_VALUE
:
4840 if (! IS_FDPIC (abfd
))
4843 case R_BFIN_PCREL24
:
4844 case R_BFIN_PCREL24_JUMP_L
:
4845 case R_BFIN_BYTE4_DATA
:
4846 if (IS_FDPIC (abfd
) && ! dynobj
)
4848 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
4849 if (! _bfin_create_got_section (abfd
, info
))
4852 if (! IS_FDPIC (abfd
))
4859 if (h
->dynindx
== -1)
4860 switch (ELF_ST_VISIBILITY (h
->other
))
4866 bfd_elf_link_record_dynamic_symbol (info
, h
);
4870 = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info
),
4872 rel
->r_addend
, INSERT
);
4875 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
4876 (info
), abfd
, r_symndx
,
4877 rel
->r_addend
, INSERT
);
4887 switch (ELF32_R_TYPE (rel
->r_info
))
4889 case R_BFIN_PCREL24
:
4890 case R_BFIN_PCREL24_JUMP_L
:
4891 if (IS_FDPIC (abfd
))
4895 case R_BFIN_FUNCDESC_VALUE
:
4896 picrel
->relocsfdv
++;
4897 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
4901 case R_BFIN_BYTE4_DATA
:
4902 if (! IS_FDPIC (abfd
))
4906 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
4910 case R_BFIN_GOT17M4
:
4919 case R_BFIN_FUNCDESC_GOT17M4
:
4920 picrel
->fdgot17m4
++;
4923 case R_BFIN_FUNCDESC_GOTHI
:
4924 case R_BFIN_FUNCDESC_GOTLO
:
4925 picrel
->fdgothilo
++;
4928 case R_BFIN_GOTOFF17M4
:
4929 case R_BFIN_GOTOFFHI
:
4930 case R_BFIN_GOTOFFLO
:
4934 case R_BFIN_FUNCDESC_GOTOFF17M4
:
4935 picrel
->fdgoff17m4
++;
4938 case R_BFIN_FUNCDESC_GOTOFFHI
:
4939 case R_BFIN_FUNCDESC_GOTOFFLO
:
4940 picrel
->fdgoffhilo
++;
4943 case R_BFIN_FUNCDESC
:
4948 /* This relocation describes the C++ object vtable hierarchy.
4949 Reconstruct it for later use during GC. */
4950 case R_BFIN_GNU_VTINHERIT
:
4951 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4955 /* This relocation describes which C++ vtable entries are actually
4956 used. Record for later use during GC. */
4957 case R_BFIN_GNU_VTENTRY
:
4958 BFD_ASSERT (h
!= NULL
);
4960 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4964 case R_BFIN_HUIMM16
:
4965 case R_BFIN_LUIMM16
:
4966 case R_BFIN_PCREL12_JUMP_S
:
4967 case R_BFIN_PCREL10
:
4972 (*_bfd_error_handler
)
4973 (_("%B: unsupported relocation type %i"),
4974 abfd
, ELF32_R_TYPE (rel
->r_info
));
4982 /* Set the right machine number for a Blackfin ELF file. */
4985 elf32_bfin_object_p (bfd
*abfd
)
4987 bfd_default_set_arch_mach (abfd
, bfd_arch_bfin
, 0);
4988 return (((elf_elfheader (abfd
)->e_flags
& EF_BFIN_FDPIC
) != 0)
4989 == (IS_FDPIC (abfd
)));
4993 elf32_bfin_set_private_flags (bfd
* abfd
, flagword flags
)
4995 elf_elfheader (abfd
)->e_flags
= flags
;
4996 elf_flags_init (abfd
) = TRUE
;
5000 /* Copy backend specific data from one object module to another. */
5003 bfin_elf_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
5005 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
5006 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
5009 BFD_ASSERT (!elf_flags_init (obfd
)
5010 || elf_elfheader (obfd
)->e_flags
== elf_elfheader (ibfd
)->e_flags
);
5012 elf_elfheader (obfd
)->e_flags
= elf_elfheader (ibfd
)->e_flags
;
5013 elf_flags_init (obfd
) = TRUE
;
5015 /* Copy object attributes. */
5016 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
5022 elf32_bfinfdpic_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
5026 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
5027 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
5030 if (! bfin_elf_copy_private_bfd_data (ibfd
, obfd
))
5033 if (! elf_tdata (ibfd
) || ! elf_tdata (ibfd
)->phdr
5034 || ! elf_tdata (obfd
) || ! elf_tdata (obfd
)->phdr
)
5037 /* Copy the stack size. */
5038 for (i
= 0; i
< elf_elfheader (ibfd
)->e_phnum
; i
++)
5039 if (elf_tdata (ibfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
5041 Elf_Internal_Phdr
*iphdr
= &elf_tdata (ibfd
)->phdr
[i
];
5043 for (i
= 0; i
< elf_elfheader (obfd
)->e_phnum
; i
++)
5044 if (elf_tdata (obfd
)->phdr
[i
].p_type
== PT_GNU_STACK
)
5046 memcpy (&elf_tdata (obfd
)->phdr
[i
], iphdr
, sizeof (*iphdr
));
5048 /* Rewrite the phdrs, since we're only called after they
5049 were first written. */
5050 if (bfd_seek (obfd
, (bfd_signed_vma
) get_elf_backend_data (obfd
)
5051 ->s
->sizeof_ehdr
, SEEK_SET
) != 0
5052 || get_elf_backend_data (obfd
)->s
5053 ->write_out_phdrs (obfd
, elf_tdata (obfd
)->phdr
,
5054 elf_elfheader (obfd
)->e_phnum
) != 0)
5066 /* Display the flags field. */
5068 elf32_bfin_print_private_bfd_data (bfd
* abfd
, PTR ptr
)
5070 FILE *file
= (FILE *) ptr
;
5073 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
5075 /* Print normal ELF private data. */
5076 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
5078 flags
= elf_elfheader (abfd
)->e_flags
;
5080 /* xgettext:c-format */
5081 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
5083 if (flags
& EF_BFIN_PIC
)
5084 fprintf (file
, " -fpic");
5086 if (flags
& EF_BFIN_FDPIC
)
5087 fprintf (file
, " -mfdpic");
5094 /* Merge backend specific data from an object file to the output
5095 object file when linking. */
5098 elf32_bfin_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
5100 flagword old_flags
, new_flags
;
5101 bfd_boolean error
= FALSE
;
5103 new_flags
= elf_elfheader (ibfd
)->e_flags
;
5104 old_flags
= elf_elfheader (obfd
)->e_flags
;
5106 if (new_flags
& EF_BFIN_FDPIC
)
5107 new_flags
&= ~EF_BFIN_PIC
;
5112 (*_bfd_error_handler
) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s",
5113 old_flags
, new_flags
, elf_flags_init (obfd
) ? "yes" : "no",
5114 bfd_get_filename (ibfd
));
5116 if (!elf_flags_init (obfd
)) /* First call, no flags set. */
5118 elf_flags_init (obfd
) = TRUE
;
5119 elf_elfheader (obfd
)->e_flags
= new_flags
;
5122 if (((new_flags
& EF_BFIN_FDPIC
) == 0) != (! IS_FDPIC (obfd
)))
5125 if (IS_FDPIC (obfd
))
5126 (*_bfd_error_handler
)
5127 (_("%s: cannot link non-fdpic object file into fdpic executable"),
5128 bfd_get_filename (ibfd
));
5130 (*_bfd_error_handler
)
5131 (_("%s: cannot link fdpic object file into non-fdpic executable"),
5132 bfd_get_filename (ibfd
));
5136 bfd_set_error (bfd_error_bad_value
);
5141 /* bfin ELF linker hash entry. */
5143 struct bfin_link_hash_entry
5145 struct elf_link_hash_entry root
;
5147 /* Number of PC relative relocs copied for this symbol. */
5148 struct bfin_pcrel_relocs_copied
*pcrel_relocs_copied
;
5151 /* bfin ELF linker hash table. */
5153 struct bfin_link_hash_table
5155 struct elf_link_hash_table root
;
5157 /* Small local sym cache. */
5158 struct sym_cache sym_cache
;
5161 #define bfin_hash_entry(ent) ((struct bfin_link_hash_entry *) (ent))
5163 static struct bfd_hash_entry
*
5164 bfin_link_hash_newfunc (struct bfd_hash_entry
*entry
,
5165 struct bfd_hash_table
*table
, const char *string
)
5167 struct bfd_hash_entry
*ret
= entry
;
5169 /* Allocate the structure if it has not already been allocated by a
5172 ret
= bfd_hash_allocate (table
, sizeof (struct bfin_link_hash_entry
));
5176 /* Call the allocation method of the superclass. */
5177 ret
= _bfd_elf_link_hash_newfunc (ret
, table
, string
);
5179 bfin_hash_entry (ret
)->pcrel_relocs_copied
= NULL
;
5184 /* Create an bfin ELF linker hash table. */
5186 static struct bfd_link_hash_table
*
5187 bfin_link_hash_table_create (bfd
* abfd
)
5189 struct bfin_link_hash_table
*ret
;
5190 bfd_size_type amt
= sizeof (struct bfin_link_hash_table
);
5192 ret
= bfd_zalloc (abfd
, amt
);
5196 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
5197 bfin_link_hash_newfunc
,
5198 sizeof (struct elf_link_hash_entry
),
5205 ret
->sym_cache
.abfd
= NULL
;
5207 return &ret
->root
.root
;
5210 /* The size in bytes of an entry in the procedure linkage table. */
5212 /* Finish up the dynamic sections. */
5215 bfin_finish_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
5216 struct bfd_link_info
*info
)
5221 dynobj
= elf_hash_table (info
)->dynobj
;
5223 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
5225 if (elf_hash_table (info
)->dynamic_sections_created
)
5227 Elf32_External_Dyn
*dyncon
, *dynconend
;
5229 BFD_ASSERT (sdyn
!= NULL
);
5231 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
5232 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
5233 for (; dyncon
< dynconend
; dyncon
++)
5235 Elf_Internal_Dyn dyn
;
5237 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
5245 /* Finish up dynamic symbol handling. We set the contents of various
5246 dynamic sections here. */
5249 bfin_finish_dynamic_symbol (bfd
* output_bfd
,
5250 struct bfd_link_info
*info
,
5251 struct elf_link_hash_entry
*h
,
5252 Elf_Internal_Sym
* sym
)
5256 dynobj
= elf_hash_table (info
)->dynobj
;
5258 if (h
->got
.offset
!= (bfd_vma
) - 1)
5262 Elf_Internal_Rela rela
;
5265 /* This symbol has an entry in the global offset table.
5268 sgot
= bfd_get_linker_section (dynobj
, ".got");
5269 srela
= bfd_get_linker_section (dynobj
, ".rela.got");
5270 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
5272 rela
.r_offset
= (sgot
->output_section
->vma
5273 + sgot
->output_offset
5274 + (h
->got
.offset
& ~(bfd_vma
) 1));
5276 /* If this is a -Bsymbolic link, and the symbol is defined
5277 locally, we just want to emit a RELATIVE reloc. Likewise if
5278 the symbol was forced to be local because of a version file.
5279 The entry in the global offset table will already have been
5280 initialized in the relocate_section function. */
5283 || h
->dynindx
== -1 || h
->forced_local
) && h
->def_regular
)
5285 (*_bfd_error_handler
) (_("*** check this relocation %s"),
5287 rela
.r_info
= ELF32_R_INFO (0, R_BFIN_PCREL24
);
5288 rela
.r_addend
= bfd_get_signed_32 (output_bfd
,
5292 offset
& ~(bfd_vma
) 1)));
5296 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
5297 sgot
->contents
+ (h
->got
.offset
& ~(bfd_vma
) 1));
5298 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_BFIN_GOT
);
5302 loc
= srela
->contents
;
5303 loc
+= srela
->reloc_count
++ * sizeof (Elf32_External_Rela
);
5304 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
5311 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
5312 if (strcmp (h
->root
.root
.string
, "__DYNAMIC") == 0
5313 || h
== elf_hash_table (info
)->hgot
)
5314 sym
->st_shndx
= SHN_ABS
;
5319 /* Adjust a symbol defined by a dynamic object and referenced by a
5320 regular object. The current definition is in some section of the
5321 dynamic object, but we're not including those sections. We have to
5322 change the definition to something the rest of the link can
5326 bfin_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5327 struct elf_link_hash_entry
*h
)
5331 unsigned int power_of_two
;
5333 dynobj
= elf_hash_table (info
)->dynobj
;
5335 /* Make sure we know what is going on here. */
5336 BFD_ASSERT (dynobj
!= NULL
5338 || h
->u
.weakdef
!= NULL
5339 || (h
->def_dynamic
&& h
->ref_regular
&& !h
->def_regular
)));
5341 /* If this is a function, put it in the procedure linkage table. We
5342 will fill in the contents of the procedure linkage table later,
5343 when we know the address of the .got section. */
5344 if (h
->type
== STT_FUNC
|| h
->needs_plt
)
5349 /* If this is a weak symbol, and there is a real definition, the
5350 processor independent code will have arranged for us to see the
5351 real definition first, and we can just use the same value. */
5352 if (h
->u
.weakdef
!= NULL
)
5354 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5355 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5356 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5357 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5361 /* This is a reference to a symbol defined by a dynamic object which
5362 is not a function. */
5364 /* If we are creating a shared library, we must presume that the
5365 only references to the symbol are via the global offset table.
5366 For such cases we need not do anything here; the relocations will
5367 be handled correctly by relocate_section. */
5371 /* We must allocate the symbol in our .dynbss section, which will
5372 become part of the .bss section of the executable. There will be
5373 an entry for this symbol in the .dynsym section. The dynamic
5374 object will contain position independent code, so all references
5375 from the dynamic object to this symbol will go through the global
5376 offset table. The dynamic linker will use the .dynsym entry to
5377 determine the address it must put in the global offset table, so
5378 both the dynamic object and the regular object will refer to the
5379 same memory location for the variable. */
5381 s
= bfd_get_linker_section (dynobj
, ".dynbss");
5382 BFD_ASSERT (s
!= NULL
);
5384 /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
5385 copy the initial value out of the dynamic object and into the
5386 runtime process image. We need to remember the offset into the
5387 .rela.bss section we are going to use. */
5388 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
5392 srel
= bfd_get_linker_section (dynobj
, ".rela.bss");
5393 BFD_ASSERT (srel
!= NULL
);
5394 srel
->size
+= sizeof (Elf32_External_Rela
);
5398 /* We need to figure out the alignment required for this symbol. I
5399 have no idea how ELF linkers handle this. */
5400 power_of_two
= bfd_log2 (h
->size
);
5401 if (power_of_two
> 3)
5404 /* Apply the required alignment. */
5405 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
5406 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
5408 if (!bfd_set_section_alignment (dynobj
, s
, power_of_two
))
5412 /* Define the symbol as being at this point in the section. */
5413 h
->root
.u
.def
.section
= s
;
5414 h
->root
.u
.def
.value
= s
->size
;
5416 /* Increment the section size to make room for the symbol. */
5422 /* The bfin linker needs to keep track of the number of relocs that it
5423 decides to copy in check_relocs for each symbol. This is so that it
5424 can discard PC relative relocs if it doesn't need them when linking
5425 with -Bsymbolic. We store the information in a field extending the
5426 regular ELF linker hash table. */
5428 /* This structure keeps track of the number of PC relative relocs we have
5429 copied for a given symbol. */
5431 struct bfin_pcrel_relocs_copied
5434 struct bfin_pcrel_relocs_copied
*next
;
5435 /* A section in dynobj. */
5437 /* Number of relocs copied in this section. */
5438 bfd_size_type count
;
5441 /* This function is called via elf_link_hash_traverse if we are
5442 creating a shared object. In the -Bsymbolic case it discards the
5443 space allocated to copy PC relative relocs against symbols which
5444 are defined in regular objects. For the normal shared case, it
5445 discards space for pc-relative relocs that have become local due to
5446 symbol visibility changes. We allocated space for them in the
5447 check_relocs routine, but we won't fill them in in the
5448 relocate_section routine.
5450 We also check whether any of the remaining relocations apply
5451 against a readonly section, and set the DF_TEXTREL flag in this
5455 bfin_discard_copies (struct elf_link_hash_entry
*h
, PTR inf
)
5457 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5458 struct bfin_pcrel_relocs_copied
*s
;
5460 if (!h
->def_regular
|| (!info
->symbolic
&& !h
->forced_local
))
5462 if ((info
->flags
& DF_TEXTREL
) == 0)
5464 /* Look for relocations against read-only sections. */
5465 for (s
= bfin_hash_entry (h
)->pcrel_relocs_copied
;
5466 s
!= NULL
; s
= s
->next
)
5467 if ((s
->section
->flags
& SEC_READONLY
) != 0)
5469 info
->flags
|= DF_TEXTREL
;
5477 for (s
= bfin_hash_entry (h
)->pcrel_relocs_copied
;
5478 s
!= NULL
; s
= s
->next
)
5479 s
->section
->size
-= s
->count
* sizeof (Elf32_External_Rela
);
5485 bfin_size_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
5486 struct bfd_link_info
*info
)
5492 dynobj
= elf_hash_table (info
)->dynobj
;
5493 BFD_ASSERT (dynobj
!= NULL
);
5495 if (elf_hash_table (info
)->dynamic_sections_created
)
5497 /* Set the contents of the .interp section to the interpreter. */
5498 if (info
->executable
)
5500 s
= bfd_get_linker_section (dynobj
, ".interp");
5501 BFD_ASSERT (s
!= NULL
);
5502 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
5503 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
5508 /* We may have created entries in the .rela.got section.
5509 However, if we are not creating the dynamic sections, we will
5510 not actually use these entries. Reset the size of .rela.got,
5511 which will cause it to get stripped from the output file
5513 s
= bfd_get_linker_section (dynobj
, ".rela.got");
5518 /* If this is a -Bsymbolic shared link, then we need to discard all
5519 PC relative relocs against symbols defined in a regular object.
5520 For the normal shared case we discard the PC relative relocs
5521 against symbols that have become local due to visibility changes.
5522 We allocated space for them in the check_relocs routine, but we
5523 will not fill them in in the relocate_section routine. */
5525 elf_link_hash_traverse (elf_hash_table (info
),
5526 bfin_discard_copies
, (PTR
) info
);
5528 /* The check_relocs and adjust_dynamic_symbol entry points have
5529 determined the sizes of the various dynamic sections. Allocate
5532 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
5537 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
5540 /* It's OK to base decisions on the section name, because none
5541 of the dynobj section names depend upon the input files. */
5542 name
= bfd_get_section_name (dynobj
, s
);
5546 if (CONST_STRNEQ (name
, ".rela"))
5550 /* If we don't need this section, strip it from the
5551 output file. This is mostly to handle .rela.bss and
5552 .rela.plt. We must create both sections in
5553 create_dynamic_sections, because they must be created
5554 before the linker maps input sections to output
5555 sections. The linker does that before
5556 adjust_dynamic_symbol is called, and it is that
5557 function which decides whether anything needs to go
5558 into these sections. */
5565 /* We use the reloc_count field as a counter if we need
5566 to copy relocs into the output file. */
5570 else if (! CONST_STRNEQ (name
, ".got"))
5572 /* It's not one of our sections, so don't allocate space. */
5578 s
->flags
|= SEC_EXCLUDE
;
5582 /* Allocate memory for the section contents. */
5583 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
5584 Unused entries should be reclaimed before the section's contents
5585 are written out, but at the moment this does not happen. Thus in
5586 order to prevent writing out garbage, we initialise the section's
5587 contents to zero. */
5588 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
5589 if (s
->contents
== NULL
&& s
->size
!= 0)
5593 if (elf_hash_table (info
)->dynamic_sections_created
)
5595 /* Add some entries to the .dynamic section. We fill in the
5596 values later, in bfin_finish_dynamic_sections, but we
5597 must add the entries now so that we get the correct size for
5598 the .dynamic section. The DT_DEBUG entry is filled in by the
5599 dynamic linker and used by the debugger. */
5600 #define add_dynamic_entry(TAG, VAL) \
5601 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5605 if (!add_dynamic_entry (DT_DEBUG
, 0))
5612 if (!add_dynamic_entry (DT_RELA
, 0)
5613 || !add_dynamic_entry (DT_RELASZ
, 0)
5614 || !add_dynamic_entry (DT_RELAENT
,
5615 sizeof (Elf32_External_Rela
)))
5619 if ((info
->flags
& DF_TEXTREL
) != 0)
5621 if (!add_dynamic_entry (DT_TEXTREL
, 0))
5625 #undef add_dynamic_entry
5630 /* Given a .data section and a .emreloc in-memory section, store
5631 relocation information into the .emreloc section which can be
5632 used at runtime to relocate the section. This is called by the
5633 linker when the --embedded-relocs switch is used. This is called
5634 after the add_symbols entry point has been called for all the
5635 objects, and before the final_link entry point is called. */
5637 bfd_boolean bfd_bfin_elf32_create_embedded_relocs
5638 PARAMS ((bfd
*, struct bfd_link_info
*, asection
*, asection
*, char **));
5641 bfd_bfin_elf32_create_embedded_relocs (
5643 struct bfd_link_info
*info
,
5648 Elf_Internal_Shdr
*symtab_hdr
;
5649 Elf_Internal_Sym
*isymbuf
= NULL
;
5650 Elf_Internal_Rela
*internal_relocs
= NULL
;
5651 Elf_Internal_Rela
*irel
, *irelend
;
5655 BFD_ASSERT (! info
->relocatable
);
5659 if (datasec
->reloc_count
== 0)
5662 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5664 /* Get a copy of the native relocations. */
5665 internal_relocs
= (_bfd_elf_link_read_relocs
5666 (abfd
, datasec
, (PTR
) NULL
, (Elf_Internal_Rela
*) NULL
,
5667 info
->keep_memory
));
5668 if (internal_relocs
== NULL
)
5671 amt
= (bfd_size_type
) datasec
->reloc_count
* 12;
5672 relsec
->contents
= (bfd_byte
*) bfd_alloc (abfd
, amt
);
5673 if (relsec
->contents
== NULL
)
5676 p
= relsec
->contents
;
5678 irelend
= internal_relocs
+ datasec
->reloc_count
;
5679 for (irel
= internal_relocs
; irel
< irelend
; irel
++, p
+= 12)
5681 asection
*targetsec
;
5683 /* We are going to write a four byte longword into the runtime
5684 reloc section. The longword will be the address in the data
5685 section which must be relocated. It is followed by the name
5686 of the target section NUL-padded or truncated to 8
5689 /* We can only relocate absolute longword relocs at run time. */
5690 if (ELF32_R_TYPE (irel
->r_info
) != (int) R_BFIN_BYTE4_DATA
)
5692 *errmsg
= _("unsupported reloc type");
5693 bfd_set_error (bfd_error_bad_value
);
5697 /* Get the target section referred to by the reloc. */
5698 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
5700 /* A local symbol. */
5701 Elf_Internal_Sym
*isym
;
5703 /* Read this BFD's local symbols if we haven't done so already. */
5704 if (isymbuf
== NULL
)
5706 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5707 if (isymbuf
== NULL
)
5708 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
5709 symtab_hdr
->sh_info
, 0,
5711 if (isymbuf
== NULL
)
5715 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
5716 targetsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5721 struct elf_link_hash_entry
*h
;
5723 /* An external symbol. */
5724 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
5725 h
= elf_sym_hashes (abfd
)[indx
];
5726 BFD_ASSERT (h
!= NULL
);
5727 if (h
->root
.type
== bfd_link_hash_defined
5728 || h
->root
.type
== bfd_link_hash_defweak
)
5729 targetsec
= h
->root
.u
.def
.section
;
5734 bfd_put_32 (abfd
, irel
->r_offset
+ datasec
->output_offset
, p
);
5735 memset (p
+ 4, 0, 8);
5736 if (targetsec
!= NULL
)
5737 strncpy ((char *) p
+ 4, targetsec
->output_section
->name
, 8);
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 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5750 if (internal_relocs
!= NULL
5751 && elf_section_data (datasec
)->relocs
!= internal_relocs
)
5752 free (internal_relocs
);
5756 struct bfd_elf_special_section
const elf32_bfin_special_sections
[] =
5758 { ".l1.text", 8, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
5759 { ".l1.data", 8, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
5760 { NULL
, 0, 0, 0, 0 }
5764 #define TARGET_LITTLE_SYM bfd_elf32_bfin_vec
5765 #define TARGET_LITTLE_NAME "elf32-bfin"
5766 #define ELF_ARCH bfd_arch_bfin
5767 #define ELF_TARGET_ID BFIN_ELF_DATA
5768 #define ELF_MACHINE_CODE EM_BLACKFIN
5769 #define ELF_MAXPAGESIZE 0x1000
5770 #define elf_symbol_leading_char '_'
5772 #define bfd_elf32_bfd_reloc_type_lookup bfin_bfd_reloc_type_lookup
5773 #define bfd_elf32_bfd_reloc_name_lookup \
5774 bfin_bfd_reloc_name_lookup
5775 #define elf_info_to_howto bfin_info_to_howto
5776 #define elf_info_to_howto_rel 0
5777 #define elf_backend_object_p elf32_bfin_object_p
5779 #define bfd_elf32_bfd_is_local_label_name \
5780 bfin_is_local_label_name
5781 #define bfin_hash_table(p) \
5782 ((struct bfin_link_hash_table *) (p)->hash)
5786 #define elf_backend_create_dynamic_sections \
5787 _bfd_elf_create_dynamic_sections
5788 #define bfd_elf32_bfd_link_hash_table_create \
5789 bfin_link_hash_table_create
5790 #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link
5792 #define elf_backend_check_relocs bfin_check_relocs
5793 #define elf_backend_adjust_dynamic_symbol \
5794 bfin_adjust_dynamic_symbol
5795 #define elf_backend_size_dynamic_sections \
5796 bfin_size_dynamic_sections
5797 #define elf_backend_relocate_section bfin_relocate_section
5798 #define elf_backend_finish_dynamic_symbol \
5799 bfin_finish_dynamic_symbol
5800 #define elf_backend_finish_dynamic_sections \
5801 bfin_finish_dynamic_sections
5802 #define elf_backend_gc_mark_hook bfin_gc_mark_hook
5803 #define elf_backend_gc_sweep_hook bfin_gc_sweep_hook
5804 #define bfd_elf32_bfd_merge_private_bfd_data \
5805 elf32_bfin_merge_private_bfd_data
5806 #define bfd_elf32_bfd_set_private_flags \
5807 elf32_bfin_set_private_flags
5808 #define bfd_elf32_bfd_print_private_bfd_data \
5809 elf32_bfin_print_private_bfd_data
5810 #define elf_backend_final_write_processing \
5811 elf32_bfin_final_write_processing
5812 #define elf_backend_reloc_type_class elf32_bfin_reloc_type_class
5813 #define elf_backend_can_gc_sections 1
5814 #define elf_backend_special_sections elf32_bfin_special_sections
5815 #define elf_backend_can_refcount 1
5816 #define elf_backend_want_got_plt 0
5817 #define elf_backend_plt_readonly 1
5818 #define elf_backend_want_plt_sym 0
5819 #define elf_backend_got_header_size 12
5820 #define elf_backend_rela_normal 1
5822 #include "elf32-target.h"
5824 #undef TARGET_LITTLE_SYM
5825 #define TARGET_LITTLE_SYM bfd_elf32_bfinfdpic_vec
5826 #undef TARGET_LITTLE_NAME
5827 #define TARGET_LITTLE_NAME "elf32-bfinfdpic"
5829 #define elf32_bed elf32_bfinfdpic_bed
5831 #undef elf_backend_gc_sweep_hook
5832 #define elf_backend_gc_sweep_hook bfinfdpic_gc_sweep_hook
5834 #undef elf_backend_got_header_size
5835 #define elf_backend_got_header_size 0
5837 #undef elf_backend_relocate_section
5838 #define elf_backend_relocate_section bfinfdpic_relocate_section
5839 #undef elf_backend_check_relocs
5840 #define elf_backend_check_relocs bfinfdpic_check_relocs
5842 #undef bfd_elf32_bfd_link_hash_table_create
5843 #define bfd_elf32_bfd_link_hash_table_create \
5844 bfinfdpic_elf_link_hash_table_create
5845 #undef elf_backend_always_size_sections
5846 #define elf_backend_always_size_sections \
5847 elf32_bfinfdpic_always_size_sections
5848 #undef elf_backend_modify_program_headers
5849 #define elf_backend_modify_program_headers \
5850 elf32_bfinfdpic_modify_program_headers
5851 #undef bfd_elf32_bfd_copy_private_bfd_data
5852 #define bfd_elf32_bfd_copy_private_bfd_data \
5853 elf32_bfinfdpic_copy_private_bfd_data
5855 #undef elf_backend_create_dynamic_sections
5856 #define elf_backend_create_dynamic_sections \
5857 elf32_bfinfdpic_create_dynamic_sections
5858 #undef elf_backend_adjust_dynamic_symbol
5859 #define elf_backend_adjust_dynamic_symbol \
5860 elf32_bfinfdpic_adjust_dynamic_symbol
5861 #undef elf_backend_size_dynamic_sections
5862 #define elf_backend_size_dynamic_sections \
5863 elf32_bfinfdpic_size_dynamic_sections
5864 #undef elf_backend_finish_dynamic_symbol
5865 #define elf_backend_finish_dynamic_symbol \
5866 elf32_bfinfdpic_finish_dynamic_symbol
5867 #undef elf_backend_finish_dynamic_sections
5868 #define elf_backend_finish_dynamic_sections \
5869 elf32_bfinfdpic_finish_dynamic_sections
5871 #undef elf_backend_discard_info
5872 #define elf_backend_discard_info \
5873 bfinfdpic_elf_discard_info
5874 #undef elf_backend_can_make_relative_eh_frame
5875 #define elf_backend_can_make_relative_eh_frame \
5876 bfinfdpic_elf_use_relative_eh_frame
5877 #undef elf_backend_can_make_lsda_relative_eh_frame
5878 #define elf_backend_can_make_lsda_relative_eh_frame \
5879 bfinfdpic_elf_use_relative_eh_frame
5880 #undef elf_backend_encode_eh_address
5881 #define elf_backend_encode_eh_address \
5882 bfinfdpic_elf_encode_eh_address
5884 #undef elf_backend_may_use_rel_p
5885 #define elf_backend_may_use_rel_p 1
5886 #undef elf_backend_may_use_rela_p
5887 #define elf_backend_may_use_rela_p 1
5888 /* We use REL for dynamic relocations only. */
5889 #undef elf_backend_default_use_rela_p
5890 #define elf_backend_default_use_rela_p 1
5892 #undef elf_backend_omit_section_dynsym
5893 #define elf_backend_omit_section_dynsym _bfinfdpic_link_omit_section_dynsym
5895 #include "elf32-target.h"