1 /* ADI Blackfin BFD support for 32-bit ELF.
2 Copyright (C) 2005-2017 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
29 /* FUNCTION : bfin_pltpc_reloc
30 ABSTRACT : TODO : figure out how to handle pltpc relocs. */
31 static bfd_reloc_status_type
33 bfd
*abfd ATTRIBUTE_UNUSED
,
34 arelent
*reloc_entry ATTRIBUTE_UNUSED
,
35 asymbol
*symbol ATTRIBUTE_UNUSED
,
36 void * data ATTRIBUTE_UNUSED
,
37 asection
*input_section ATTRIBUTE_UNUSED
,
38 bfd
*output_bfd ATTRIBUTE_UNUSED
,
39 char **error_message ATTRIBUTE_UNUSED
)
41 bfd_reloc_status_type flag
= bfd_reloc_ok
;
46 static bfd_reloc_status_type
47 bfin_pcrel24_reloc (bfd
*abfd
,
51 asection
*input_section
,
53 char **error_message ATTRIBUTE_UNUSED
)
56 bfd_size_type addr
= reloc_entry
->address
;
57 bfd_vma output_base
= 0;
58 reloc_howto_type
*howto
= reloc_entry
->howto
;
59 asection
*output_section
;
60 bfd_boolean relocatable
= (output_bfd
!= NULL
);
62 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
63 return bfd_reloc_outofrange
;
65 if (bfd_is_und_section (symbol
->section
)
66 && (symbol
->flags
& BSF_WEAK
) == 0
68 return bfd_reloc_undefined
;
70 if (bfd_is_com_section (symbol
->section
))
73 relocation
= symbol
->value
;
75 output_section
= symbol
->section
->output_section
;
80 output_base
= output_section
->vma
;
82 if (!relocatable
|| !strcmp (symbol
->name
, symbol
->section
->name
))
83 relocation
+= output_base
+ symbol
->section
->output_offset
;
85 if (!relocatable
&& !strcmp (symbol
->name
, symbol
->section
->name
))
86 relocation
+= reloc_entry
->addend
;
88 relocation
-= input_section
->output_section
->vma
+ input_section
->output_offset
;
89 relocation
-= reloc_entry
->address
;
91 if (howto
->complain_on_overflow
!= complain_overflow_dont
)
93 bfd_reloc_status_type status
;
94 status
= bfd_check_overflow (howto
->complain_on_overflow
,
97 bfd_arch_bits_per_address(abfd
),
99 if (status
!= bfd_reloc_ok
)
103 /* if rightshift is 1 and the number odd, return error. */
104 if (howto
->rightshift
&& (relocation
& 0x01))
106 _bfd_error_handler (_("relocation should be even number"));
107 return bfd_reloc_overflow
;
110 relocation
>>= (bfd_vma
) howto
->rightshift
;
111 /* Shift everything up to where it's going to be used. */
113 relocation
<<= (bfd_vma
) howto
->bitpos
;
117 reloc_entry
->address
+= input_section
->output_offset
;
118 reloc_entry
->addend
+= symbol
->section
->output_offset
;
124 /* We are getting reloc_entry->address 2 byte off from
125 the start of instruction. Assuming absolute postion
126 of the reloc data. But, following code had been written assuming
127 reloc address is starting at begining of instruction.
128 To compensate that I have increased the value of
129 relocation by 1 (effectively 2) and used the addr -2 instead of addr. */
132 x
= bfd_get_16 (abfd
, (bfd_byte
*) data
+ addr
- 2);
133 x
= (x
& 0xff00) | ((relocation
>> 16) & 0xff);
134 bfd_put_16 (abfd
, x
, (unsigned char *) data
+ addr
- 2);
136 x
= bfd_get_16 (abfd
, (bfd_byte
*) data
+ addr
);
137 x
= relocation
& 0xFFFF;
138 bfd_put_16 (abfd
, x
, (unsigned char *) data
+ addr
);
143 static bfd_reloc_status_type
144 bfin_imm16_reloc (bfd
*abfd
,
145 arelent
*reloc_entry
,
148 asection
*input_section
,
150 char **error_message ATTRIBUTE_UNUSED
)
152 bfd_vma relocation
, x
;
153 bfd_size_type reloc_addr
= reloc_entry
->address
;
154 bfd_vma output_base
= 0;
155 reloc_howto_type
*howto
= reloc_entry
->howto
;
156 asection
*output_section
;
157 bfd_boolean relocatable
= (output_bfd
!= NULL
);
159 /* Is the address of the relocation really within the section? */
160 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
161 return bfd_reloc_outofrange
;
163 if (bfd_is_und_section (symbol
->section
)
164 && (symbol
->flags
& BSF_WEAK
) == 0
166 return bfd_reloc_undefined
;
168 output_section
= symbol
->section
->output_section
;
169 relocation
= symbol
->value
;
171 /* Convert input-section-relative symbol value to absolute. */
175 output_base
= output_section
->vma
;
177 if (!relocatable
|| !strcmp (symbol
->name
, symbol
->section
->name
))
178 relocation
+= output_base
+ symbol
->section
->output_offset
;
180 /* Add in supplied addend. */
181 relocation
+= reloc_entry
->addend
;
185 reloc_entry
->address
+= input_section
->output_offset
;
186 reloc_entry
->addend
+= symbol
->section
->output_offset
;
190 reloc_entry
->addend
= 0;
193 if (howto
->complain_on_overflow
!= complain_overflow_dont
)
195 bfd_reloc_status_type flag
;
196 flag
= bfd_check_overflow (howto
->complain_on_overflow
,
199 bfd_arch_bits_per_address(abfd
),
201 if (flag
!= bfd_reloc_ok
)
205 /* Here the variable relocation holds the final address of the
206 symbol we are relocating against, plus any addend. */
208 relocation
>>= (bfd_vma
) howto
->rightshift
;
210 bfd_put_16 (abfd
, x
, (unsigned char *) data
+ reloc_addr
);
215 static bfd_reloc_status_type
216 bfin_byte4_reloc (bfd
*abfd
,
217 arelent
*reloc_entry
,
220 asection
*input_section
,
222 char **error_message ATTRIBUTE_UNUSED
)
224 bfd_vma relocation
, x
;
225 bfd_size_type addr
= reloc_entry
->address
;
226 bfd_vma output_base
= 0;
227 asection
*output_section
;
228 bfd_boolean relocatable
= (output_bfd
!= NULL
);
230 /* Is the address of the relocation really within the section? */
231 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
232 return bfd_reloc_outofrange
;
234 if (bfd_is_und_section (symbol
->section
)
235 && (symbol
->flags
& BSF_WEAK
) == 0
237 return bfd_reloc_undefined
;
239 output_section
= symbol
->section
->output_section
;
240 relocation
= symbol
->value
;
241 /* Convert input-section-relative symbol value to absolute. */
245 output_base
= output_section
->vma
;
248 && symbol
->section
->name
249 && !strcmp (symbol
->name
, symbol
->section
->name
))
252 relocation
+= output_base
+ symbol
->section
->output_offset
;
255 relocation
+= reloc_entry
->addend
;
259 /* This output will be relocatable ... like ld -r. */
260 reloc_entry
->address
+= input_section
->output_offset
;
261 reloc_entry
->addend
+= symbol
->section
->output_offset
;
265 reloc_entry
->addend
= 0;
268 /* Here the variable relocation holds the final address of the
269 symbol we are relocating against, plus any addend. */
270 x
= relocation
& 0xFFFF0000;
272 bfd_put_16 (abfd
, x
, (unsigned char *) data
+ addr
+ 2);
274 x
= relocation
& 0x0000FFFF;
275 bfd_put_16 (abfd
, x
, (unsigned char *) data
+ addr
);
279 /* bfin_bfd_reloc handles the blackfin arithmetic relocations.
280 Use this instead of bfd_perform_relocation. */
281 static bfd_reloc_status_type
282 bfin_bfd_reloc (bfd
*abfd
,
283 arelent
*reloc_entry
,
286 asection
*input_section
,
288 char **error_message ATTRIBUTE_UNUSED
)
291 bfd_size_type addr
= reloc_entry
->address
;
292 bfd_vma output_base
= 0;
293 reloc_howto_type
*howto
= reloc_entry
->howto
;
294 asection
*output_section
;
295 bfd_boolean relocatable
= (output_bfd
!= NULL
);
297 /* Is the address of the relocation really within the section? */
298 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
299 return bfd_reloc_outofrange
;
301 if (bfd_is_und_section (symbol
->section
)
302 && (symbol
->flags
& BSF_WEAK
) == 0
304 return bfd_reloc_undefined
;
306 /* Get symbol value. (Common symbols are special.) */
307 if (bfd_is_com_section (symbol
->section
))
310 relocation
= symbol
->value
;
312 output_section
= symbol
->section
->output_section
;
314 /* Convert input-section-relative symbol value to absolute. */
318 output_base
= output_section
->vma
;
320 if (!relocatable
|| !strcmp (symbol
->name
, symbol
->section
->name
))
321 relocation
+= output_base
+ symbol
->section
->output_offset
;
323 if (!relocatable
&& !strcmp (symbol
->name
, symbol
->section
->name
))
325 /* Add in supplied addend. */
326 relocation
+= reloc_entry
->addend
;
329 /* Here the variable relocation holds the final address of the
330 symbol we are relocating against, plus any addend. */
332 if (howto
->pc_relative
)
334 relocation
-= input_section
->output_section
->vma
+ input_section
->output_offset
;
336 if (howto
->pcrel_offset
)
337 relocation
-= reloc_entry
->address
;
342 reloc_entry
->address
+= input_section
->output_offset
;
343 reloc_entry
->addend
+= symbol
->section
->output_offset
;
346 if (howto
->complain_on_overflow
!= complain_overflow_dont
)
348 bfd_reloc_status_type status
;
350 status
= bfd_check_overflow (howto
->complain_on_overflow
,
353 bfd_arch_bits_per_address(abfd
),
355 if (status
!= bfd_reloc_ok
)
359 /* If rightshift is 1 and the number odd, return error. */
360 if (howto
->rightshift
&& (relocation
& 0x01))
362 _bfd_error_handler (_("relocation should be even number"));
363 return bfd_reloc_overflow
;
366 relocation
>>= (bfd_vma
) howto
->rightshift
;
368 /* Shift everything up to where it's going to be used. */
370 relocation
<<= (bfd_vma
) howto
->bitpos
;
373 x = ( (x & ~howto->dst_mask) | (relocation & howto->dst_mask))
375 /* handle 8 and 16 bit relocations here. */
380 char x
= bfd_get_8 (abfd
, (char *) data
+ addr
);
382 bfd_put_8 (abfd
, x
, (unsigned char *) data
+ addr
);
388 unsigned short x
= bfd_get_16 (abfd
, (bfd_byte
*) data
+ addr
);
390 bfd_put_16 (abfd
, (bfd_vma
) x
, (unsigned char *) data
+ addr
);
395 return bfd_reloc_other
;
401 /* HOWTO Table for blackfin.
402 Blackfin relocations are fairly complicated.
403 Some of the salient features are
404 a. Even numbered offsets. A number of (not all) relocations are
405 even numbered. This means that the rightmost bit is not stored.
406 Needs to right shift by 1 and check to see if value is not odd
407 b. A relocation can be an expression. An expression takes on
408 a variety of relocations arranged in a stack.
409 As a result, we cannot use the standard generic function as special
410 function. We will have our own, which is very similar to the standard
411 generic function except that it understands how to get the value from
412 the relocation stack. . */
414 #define BFIN_RELOC_MIN 0
415 #define BFIN_RELOC_MAX 0x21
416 #define BFIN_GNUEXT_RELOC_MIN 0x40
417 #define BFIN_GNUEXT_RELOC_MAX 0x43
418 #define BFIN_ARELOC_MIN 0xE0
419 #define BFIN_ARELOC_MAX 0xF3
421 static reloc_howto_type bfin_howto_table
[] =
423 /* This reloc does nothing. . */
424 HOWTO (R_BFIN_UNUSED0
, /* type. */
426 3, /* size (0 = byte, 1 = short, 2 = long). */
428 FALSE
, /* pc_relative. */
430 complain_overflow_dont
, /* complain_on_overflow. */
431 bfd_elf_generic_reloc
, /* special_function. */
432 "R_BFIN_UNUSED0", /* name. */
433 FALSE
, /* partial_inplace. */
436 FALSE
), /* pcrel_offset. */
438 HOWTO (R_BFIN_PCREL5M2
, /* type. */
440 1, /* size (0 = byte, 1 = short, 2 = long).. */
442 TRUE
, /* pc_relative. */
444 complain_overflow_unsigned
, /* complain_on_overflow. */
445 bfin_bfd_reloc
, /* special_function. */
446 "R_BFIN_PCREL5M2", /* name. */
447 FALSE
, /* partial_inplace. */
449 0x0000000F, /* dst_mask. */
450 FALSE
), /* pcrel_offset. */
452 HOWTO (R_BFIN_UNUSED1
, /* type. */
454 3, /* size (0 = byte, 1 = short, 2 = long). */
456 FALSE
, /* pc_relative. */
458 complain_overflow_dont
, /* complain_on_overflow. */
459 bfd_elf_generic_reloc
, /* special_function. */
460 "R_BFIN_UNUSED1", /* name. */
461 FALSE
, /* partial_inplace. */
464 FALSE
), /* pcrel_offset. */
466 HOWTO (R_BFIN_PCREL10
, /* type. */
468 1, /* size (0 = byte, 1 = short, 2 = long). */
470 TRUE
, /* pc_relative. */
472 complain_overflow_signed
, /* complain_on_overflow. */
473 bfin_bfd_reloc
, /* special_function. */
474 "R_BFIN_PCREL10", /* name. */
475 FALSE
, /* partial_inplace. */
477 0x000003FF, /* dst_mask. */
478 TRUE
), /* pcrel_offset. */
480 HOWTO (R_BFIN_PCREL12_JUMP
, /* type. */
482 /* the offset is actually 13 bit
483 aligned on a word boundary so
484 only 12 bits have to be used.
485 Right shift the rightmost bit.. */
486 1, /* size (0 = byte, 1 = short, 2 = long). */
488 TRUE
, /* pc_relative. */
490 complain_overflow_signed
, /* complain_on_overflow. */
491 bfin_bfd_reloc
, /* special_function. */
492 "R_BFIN_PCREL12_JUMP", /* name. */
493 FALSE
, /* partial_inplace. */
495 0x0FFF, /* dst_mask. */
496 TRUE
), /* pcrel_offset. */
498 HOWTO (R_BFIN_RIMM16
, /* type. */
500 1, /* size (0 = byte, 1 = short, 2 = long). */
502 FALSE
, /* pc_relative. */
504 complain_overflow_signed
, /* complain_on_overflow. */
505 bfin_imm16_reloc
, /* special_function. */
506 "R_BFIN_RIMM16", /* name. */
507 FALSE
, /* partial_inplace. */
509 0x0000FFFF, /* dst_mask. */
510 TRUE
), /* pcrel_offset. */
512 HOWTO (R_BFIN_LUIMM16
, /* type. */
514 1, /* size (0 = byte, 1 = short, 2 = long). */
516 FALSE
, /* pc_relative. */
518 complain_overflow_dont
, /* complain_on_overflow. */
519 bfin_imm16_reloc
, /* special_function. */
520 "R_BFIN_LUIMM16", /* name. */
521 FALSE
, /* partial_inplace. */
523 0x0000FFFF, /* dst_mask. */
524 TRUE
), /* pcrel_offset. */
526 HOWTO (R_BFIN_HUIMM16
, /* type. */
527 16, /* rightshift. */
528 1, /* size (0 = byte, 1 = short, 2 = long). */
530 FALSE
, /* pc_relative. */
532 complain_overflow_unsigned
, /* complain_on_overflow. */
533 bfin_imm16_reloc
, /* special_function. */
534 "R_BFIN_HUIMM16", /* name. */
535 FALSE
, /* partial_inplace. */
537 0x0000FFFF, /* dst_mask. */
538 TRUE
), /* pcrel_offset. */
540 HOWTO (R_BFIN_PCREL12_JUMP_S
, /* type. */
542 1, /* size (0 = byte, 1 = short, 2 = long). */
544 TRUE
, /* pc_relative. */
546 complain_overflow_signed
, /* complain_on_overflow. */
547 bfin_bfd_reloc
, /* special_function. */
548 "R_BFIN_PCREL12_JUMP_S", /* name. */
549 FALSE
, /* partial_inplace. */
551 0x00000FFF, /* dst_mask. */
552 TRUE
), /* pcrel_offset. */
554 HOWTO (R_BFIN_PCREL24_JUMP_X
, /* type. */
556 2, /* size (0 = byte, 1 = short, 2 = long). */
558 TRUE
, /* pc_relative. */
560 complain_overflow_signed
, /* complain_on_overflow. */
561 bfin_pcrel24_reloc
, /* special_function. */
562 "R_BFIN_PCREL24_JUMP_X", /* name. */
563 FALSE
, /* partial_inplace. */
565 0x00FFFFFF, /* dst_mask. */
566 TRUE
), /* pcrel_offset. */
568 HOWTO (R_BFIN_PCREL24
, /* type. */
570 2, /* size (0 = byte, 1 = short, 2 = long). */
572 TRUE
, /* pc_relative. */
574 complain_overflow_signed
, /* complain_on_overflow. */
575 bfin_pcrel24_reloc
, /* special_function. */
576 "R_BFIN_PCREL24", /* name. */
577 FALSE
, /* partial_inplace. */
579 0x00FFFFFF, /* dst_mask. */
580 TRUE
), /* pcrel_offset. */
582 HOWTO (R_BFIN_UNUSEDB
, /* type. */
584 3, /* size (0 = byte, 1 = short, 2 = long). */
586 FALSE
, /* pc_relative. */
588 complain_overflow_dont
, /* complain_on_overflow. */
589 bfd_elf_generic_reloc
, /* special_function. */
590 "R_BFIN_UNUSEDB", /* name. */
591 FALSE
, /* partial_inplace. */
594 FALSE
), /* pcrel_offset. */
596 HOWTO (R_BFIN_UNUSEDC
, /* type. */
598 3, /* size (0 = byte, 1 = short, 2 = long). */
600 FALSE
, /* pc_relative. */
602 complain_overflow_dont
, /* complain_on_overflow. */
603 bfd_elf_generic_reloc
, /* special_function. */
604 "R_BFIN_UNUSEDC", /* name. */
605 FALSE
, /* partial_inplace. */
608 FALSE
), /* pcrel_offset. */
610 HOWTO (R_BFIN_PCREL24_JUMP_L
, /* type. */
612 2, /* size (0 = byte, 1 = short, 2 = long). */
614 TRUE
, /* pc_relative. */
616 complain_overflow_signed
, /* complain_on_overflow. */
617 bfin_pcrel24_reloc
, /* special_function. */
618 "R_BFIN_PCREL24_JUMP_L", /* name. */
619 FALSE
, /* partial_inplace. */
621 0x00FFFFFF, /* dst_mask. */
622 TRUE
), /* pcrel_offset. */
624 HOWTO (R_BFIN_PCREL24_CALL_X
, /* type. */
626 2, /* size (0 = byte, 1 = short, 2 = long). */
628 TRUE
, /* pc_relative. */
630 complain_overflow_signed
, /* complain_on_overflow. */
631 bfin_pcrel24_reloc
, /* special_function. */
632 "R_BFIN_PCREL24_CALL_X", /* name. */
633 FALSE
, /* partial_inplace. */
635 0x00FFFFFF, /* dst_mask. */
636 TRUE
), /* pcrel_offset. */
638 HOWTO (R_BFIN_VAR_EQ_SYMB
, /* type. */
640 2, /* size (0 = byte, 1 = short, 2 = long). */
642 FALSE
, /* pc_relative. */
644 complain_overflow_bitfield
, /* complain_on_overflow. */
645 bfin_bfd_reloc
, /* special_function. */
646 "R_BFIN_VAR_EQ_SYMB", /* name. */
647 FALSE
, /* partial_inplace. */
650 FALSE
), /* pcrel_offset. */
652 HOWTO (R_BFIN_BYTE_DATA
, /* type. */
654 0, /* size (0 = byte, 1 = short, 2 = long). */
656 FALSE
, /* pc_relative. */
658 complain_overflow_unsigned
, /* complain_on_overflow. */
659 bfin_bfd_reloc
, /* special_function. */
660 "R_BFIN_BYTE_DATA", /* name. */
661 FALSE
, /* partial_inplace. */
663 0xFF, /* dst_mask. */
664 TRUE
), /* pcrel_offset. */
666 HOWTO (R_BFIN_BYTE2_DATA
, /* type. */
668 1, /* size (0 = byte, 1 = short, 2 = long). */
670 FALSE
, /* pc_relative. */
672 complain_overflow_signed
, /* complain_on_overflow. */
673 bfin_bfd_reloc
, /* special_function. */
674 "R_BFIN_BYTE2_DATA", /* name. */
675 FALSE
, /* partial_inplace. */
677 0xFFFF, /* dst_mask. */
678 TRUE
), /* pcrel_offset. */
680 HOWTO (R_BFIN_BYTE4_DATA
, /* type. */
682 2, /* size (0 = byte, 1 = short, 2 = long). */
684 FALSE
, /* pc_relative. */
686 complain_overflow_unsigned
, /* complain_on_overflow. */
687 bfin_byte4_reloc
, /* special_function. */
688 "R_BFIN_BYTE4_DATA", /* name. */
689 FALSE
, /* partial_inplace. */
691 0xFFFFFFFF, /* dst_mask. */
692 TRUE
), /* pcrel_offset. */
694 HOWTO (R_BFIN_PCREL11
, /* type. */
696 1, /* size (0 = byte, 1 = short, 2 = long). */
698 TRUE
, /* pc_relative. */
700 complain_overflow_unsigned
, /* complain_on_overflow. */
701 bfin_bfd_reloc
, /* special_function. */
702 "R_BFIN_PCREL11", /* name. */
703 FALSE
, /* partial_inplace. */
705 0x000003FF, /* dst_mask. */
706 FALSE
), /* pcrel_offset. */
709 /* A 18-bit signed operand with the GOT offset for the address of
711 HOWTO (R_BFIN_GOT17M4
, /* type */
713 1, /* size (0 = byte, 1 = short, 2 = long) */
715 FALSE
, /* pc_relative */
717 complain_overflow_signed
, /* complain_on_overflow */
718 bfd_elf_generic_reloc
, /* special_function */
719 "R_BFIN_GOT17M4", /* name */
720 FALSE
, /* partial_inplace */
721 0xffff, /* src_mask */
722 0xffff, /* dst_mask */
723 FALSE
), /* pcrel_offset */
725 /* The upper 16 bits of the GOT offset for the address of the
727 HOWTO (R_BFIN_GOTHI
, /* type */
729 1, /* size (0 = byte, 1 = short, 2 = long) */
731 FALSE
, /* pc_relative */
733 complain_overflow_dont
, /* complain_on_overflow */
734 bfd_elf_generic_reloc
, /* special_function */
735 "R_BFIN_GOTHI", /* name */
736 FALSE
, /* partial_inplace */
737 0xffff, /* src_mask */
738 0xffff, /* dst_mask */
739 FALSE
), /* pcrel_offset */
741 /* The lower 16 bits of the GOT offset for the address of the
743 HOWTO (R_BFIN_GOTLO
, /* type */
745 1, /* size (0 = byte, 1 = short, 2 = long) */
747 FALSE
, /* pc_relative */
749 complain_overflow_dont
, /* complain_on_overflow */
750 bfd_elf_generic_reloc
, /* special_function */
751 "R_BFIN_GOTLO", /* name */
752 FALSE
, /* partial_inplace */
753 0xffff, /* src_mask */
754 0xffff, /* dst_mask */
755 FALSE
), /* pcrel_offset */
757 /* The 32-bit address of the canonical descriptor of a function. */
758 HOWTO (R_BFIN_FUNCDESC
, /* type */
760 2, /* size (0 = byte, 1 = short, 2 = long) */
762 FALSE
, /* pc_relative */
764 complain_overflow_bitfield
, /* complain_on_overflow */
765 bfd_elf_generic_reloc
, /* special_function */
766 "R_BFIN_FUNCDESC", /* name */
767 FALSE
, /* partial_inplace */
768 0xffffffff, /* src_mask */
769 0xffffffff, /* dst_mask */
770 FALSE
), /* pcrel_offset */
772 /* A 12-bit signed operand with the GOT offset for the address of
773 canonical descriptor of a function. */
774 HOWTO (R_BFIN_FUNCDESC_GOT17M4
, /* type */
776 1, /* size (0 = byte, 1 = short, 2 = long) */
778 FALSE
, /* pc_relative */
780 complain_overflow_signed
, /* complain_on_overflow */
781 bfd_elf_generic_reloc
, /* special_function */
782 "R_BFIN_FUNCDESC_GOT17M4", /* name */
783 FALSE
, /* partial_inplace */
784 0xffff, /* src_mask */
785 0xffff, /* dst_mask */
786 FALSE
), /* pcrel_offset */
788 /* The upper 16 bits of the GOT offset for the address of the
789 canonical descriptor of a function. */
790 HOWTO (R_BFIN_FUNCDESC_GOTHI
, /* type */
792 1, /* size (0 = byte, 1 = short, 2 = long) */
794 FALSE
, /* pc_relative */
796 complain_overflow_dont
, /* complain_on_overflow */
797 bfd_elf_generic_reloc
, /* special_function */
798 "R_BFIN_FUNCDESC_GOTHI", /* name */
799 FALSE
, /* partial_inplace */
800 0xffff, /* src_mask */
801 0xffff, /* dst_mask */
802 FALSE
), /* pcrel_offset */
804 /* The lower 16 bits of the GOT offset for the address of the
805 canonical descriptor of a function. */
806 HOWTO (R_BFIN_FUNCDESC_GOTLO
, /* type */
808 1, /* size (0 = byte, 1 = short, 2 = long) */
810 FALSE
, /* pc_relative */
812 complain_overflow_dont
, /* complain_on_overflow */
813 bfd_elf_generic_reloc
, /* special_function */
814 "R_BFIN_FUNCDESC_GOTLO", /* name */
815 FALSE
, /* partial_inplace */
816 0xffff, /* src_mask */
817 0xffff, /* dst_mask */
818 FALSE
), /* pcrel_offset */
820 /* The 32-bit address of the canonical descriptor of a function. */
821 HOWTO (R_BFIN_FUNCDESC_VALUE
, /* type */
823 2, /* size (0 = byte, 1 = short, 2 = long) */
825 FALSE
, /* pc_relative */
827 complain_overflow_bitfield
, /* complain_on_overflow */
828 bfd_elf_generic_reloc
, /* special_function */
829 "R_BFIN_FUNCDESC_VALUE", /* name */
830 FALSE
, /* partial_inplace */
831 0xffffffff, /* src_mask */
832 0xffffffff, /* dst_mask */
833 FALSE
), /* pcrel_offset */
835 /* A 12-bit signed operand with the GOT offset for the address of
836 canonical descriptor of a function. */
837 HOWTO (R_BFIN_FUNCDESC_GOTOFF17M4
, /* type */
839 1, /* size (0 = byte, 1 = short, 2 = long) */
841 FALSE
, /* pc_relative */
843 complain_overflow_signed
, /* complain_on_overflow */
844 bfd_elf_generic_reloc
, /* special_function */
845 "R_BFIN_FUNCDESC_GOTOFF17M4", /* name */
846 FALSE
, /* partial_inplace */
847 0xffff, /* src_mask */
848 0xffff, /* dst_mask */
849 FALSE
), /* pcrel_offset */
851 /* The upper 16 bits of the GOT offset for the address of the
852 canonical descriptor of a function. */
853 HOWTO (R_BFIN_FUNCDESC_GOTOFFHI
, /* type */
855 1, /* size (0 = byte, 1 = short, 2 = long) */
857 FALSE
, /* pc_relative */
859 complain_overflow_dont
, /* complain_on_overflow */
860 bfd_elf_generic_reloc
, /* special_function */
861 "R_BFIN_FUNCDESC_GOTOFFHI", /* name */
862 FALSE
, /* partial_inplace */
863 0xffff, /* src_mask */
864 0xffff, /* dst_mask */
865 FALSE
), /* pcrel_offset */
867 /* The lower 16 bits of the GOT offset for the address of the
868 canonical descriptor of a function. */
869 HOWTO (R_BFIN_FUNCDESC_GOTOFFLO
, /* type */
871 1, /* size (0 = byte, 1 = short, 2 = long) */
873 FALSE
, /* pc_relative */
875 complain_overflow_dont
, /* complain_on_overflow */
876 bfd_elf_generic_reloc
, /* special_function */
877 "R_BFIN_FUNCDESC_GOTOFFLO", /* name */
878 FALSE
, /* partial_inplace */
879 0xffff, /* src_mask */
880 0xffff, /* dst_mask */
881 FALSE
), /* pcrel_offset */
883 /* A 12-bit signed operand with the GOT offset for the address of
885 HOWTO (R_BFIN_GOTOFF17M4
, /* type */
887 1, /* size (0 = byte, 1 = short, 2 = long) */
889 FALSE
, /* pc_relative */
891 complain_overflow_signed
, /* complain_on_overflow */
892 bfd_elf_generic_reloc
, /* special_function */
893 "R_BFIN_GOTOFF17M4", /* name */
894 FALSE
, /* partial_inplace */
895 0xffff, /* src_mask */
896 0xffff, /* dst_mask */
897 FALSE
), /* pcrel_offset */
899 /* The upper 16 bits of the GOT offset for the address of the
901 HOWTO (R_BFIN_GOTOFFHI
, /* type */
903 1, /* size (0 = byte, 1 = short, 2 = long) */
905 FALSE
, /* pc_relative */
907 complain_overflow_dont
, /* complain_on_overflow */
908 bfd_elf_generic_reloc
, /* special_function */
909 "R_BFIN_GOTOFFHI", /* name */
910 FALSE
, /* partial_inplace */
911 0xffff, /* src_mask */
912 0xffff, /* dst_mask */
913 FALSE
), /* pcrel_offset */
915 /* The lower 16 bits of the GOT offset for the address of the
917 HOWTO (R_BFIN_GOTOFFLO
, /* type */
919 1, /* size (0 = byte, 1 = short, 2 = long) */
921 FALSE
, /* pc_relative */
923 complain_overflow_dont
, /* complain_on_overflow */
924 bfd_elf_generic_reloc
, /* special_function */
925 "R_BFIN_GOTOFFLO", /* name */
926 FALSE
, /* partial_inplace */
927 0xffff, /* src_mask */
928 0xffff, /* dst_mask */
929 FALSE
), /* pcrel_offset */
932 static reloc_howto_type bfin_gnuext_howto_table
[] =
934 HOWTO (R_BFIN_PLTPC
, /* type. */
936 1, /* size (0 = byte, 1 = short, 2 = long). */
938 FALSE
, /* pc_relative. */
940 complain_overflow_bitfield
, /* complain_on_overflow. */
941 bfin_pltpc_reloc
, /* special_function. */
942 "R_BFIN_PLTPC", /* name. */
943 FALSE
, /* partial_inplace. */
944 0xffff, /* src_mask. */
945 0xffff, /* dst_mask. */
946 FALSE
), /* pcrel_offset. */
948 HOWTO (R_BFIN_GOT
, /* type. */
950 1, /* size (0 = byte, 1 = short, 2 = long). */
952 FALSE
, /* pc_relative. */
954 complain_overflow_bitfield
, /* complain_on_overflow. */
955 bfd_elf_generic_reloc
, /* special_function. */
956 "R_BFIN_GOT", /* name. */
957 FALSE
, /* partial_inplace. */
958 0x7fff, /* src_mask. */
959 0x7fff, /* dst_mask. */
960 FALSE
), /* pcrel_offset. */
962 /* GNU extension to record C++ vtable hierarchy. */
963 HOWTO (R_BFIN_GNU_VTINHERIT
, /* type. */
965 2, /* size (0 = byte, 1 = short, 2 = long). */
967 FALSE
, /* pc_relative. */
969 complain_overflow_dont
, /* complain_on_overflow. */
970 NULL
, /* special_function. */
971 "R_BFIN_GNU_VTINHERIT", /* name. */
972 FALSE
, /* partial_inplace. */
975 FALSE
), /* pcrel_offset. */
977 /* GNU extension to record C++ vtable member usage. */
978 HOWTO (R_BFIN_GNU_VTENTRY
, /* type. */
980 2, /* size (0 = byte, 1 = short, 2 = long). */
982 FALSE
, /* pc_relative. */
984 complain_overflow_dont
, /* complain_on_overflow. */
985 _bfd_elf_rel_vtable_reloc_fn
, /* special_function. */
986 "R_BFIN_GNU_VTENTRY", /* name. */
987 FALSE
, /* partial_inplace. */
990 FALSE
) /* pcrel_offset. */
993 struct bfin_reloc_map
995 bfd_reloc_code_real_type bfd_reloc_val
;
996 unsigned int bfin_reloc_val
;
999 static const struct bfin_reloc_map bfin_reloc_map
[] =
1001 { BFD_RELOC_NONE
, R_BFIN_UNUSED0
},
1002 { BFD_RELOC_BFIN_5_PCREL
, R_BFIN_PCREL5M2
},
1003 { BFD_RELOC_NONE
, R_BFIN_UNUSED1
},
1004 { BFD_RELOC_BFIN_10_PCREL
, R_BFIN_PCREL10
},
1005 { BFD_RELOC_BFIN_12_PCREL_JUMP
, R_BFIN_PCREL12_JUMP
},
1006 { BFD_RELOC_BFIN_16_IMM
, R_BFIN_RIMM16
},
1007 { BFD_RELOC_BFIN_16_LOW
, R_BFIN_LUIMM16
},
1008 { BFD_RELOC_BFIN_16_HIGH
, R_BFIN_HUIMM16
},
1009 { BFD_RELOC_BFIN_12_PCREL_JUMP_S
, R_BFIN_PCREL12_JUMP_S
},
1010 { BFD_RELOC_24_PCREL
, R_BFIN_PCREL24
},
1011 { BFD_RELOC_24_PCREL
, R_BFIN_PCREL24
},
1012 { BFD_RELOC_BFIN_24_PCREL_JUMP_L
, R_BFIN_PCREL24_JUMP_L
},
1013 { BFD_RELOC_NONE
, R_BFIN_UNUSEDB
},
1014 { BFD_RELOC_NONE
, R_BFIN_UNUSEDC
},
1015 { BFD_RELOC_BFIN_24_PCREL_CALL_X
, R_BFIN_PCREL24_CALL_X
},
1016 { BFD_RELOC_8
, R_BFIN_BYTE_DATA
},
1017 { BFD_RELOC_16
, R_BFIN_BYTE2_DATA
},
1018 { BFD_RELOC_32
, R_BFIN_BYTE4_DATA
},
1019 { BFD_RELOC_BFIN_11_PCREL
, R_BFIN_PCREL11
},
1020 { BFD_RELOC_BFIN_GOT
, R_BFIN_GOT
},
1021 { BFD_RELOC_BFIN_PLTPC
, R_BFIN_PLTPC
},
1023 { BFD_RELOC_BFIN_GOT17M4
, R_BFIN_GOT17M4
},
1024 { BFD_RELOC_BFIN_GOTHI
, R_BFIN_GOTHI
},
1025 { BFD_RELOC_BFIN_GOTLO
, R_BFIN_GOTLO
},
1026 { BFD_RELOC_BFIN_FUNCDESC
, R_BFIN_FUNCDESC
},
1027 { BFD_RELOC_BFIN_FUNCDESC_GOT17M4
, R_BFIN_FUNCDESC_GOT17M4
},
1028 { BFD_RELOC_BFIN_FUNCDESC_GOTHI
, R_BFIN_FUNCDESC_GOTHI
},
1029 { BFD_RELOC_BFIN_FUNCDESC_GOTLO
, R_BFIN_FUNCDESC_GOTLO
},
1030 { BFD_RELOC_BFIN_FUNCDESC_VALUE
, R_BFIN_FUNCDESC_VALUE
},
1031 { BFD_RELOC_BFIN_FUNCDESC_GOTOFF17M4
, R_BFIN_FUNCDESC_GOTOFF17M4
},
1032 { BFD_RELOC_BFIN_FUNCDESC_GOTOFFHI
, R_BFIN_FUNCDESC_GOTOFFHI
},
1033 { BFD_RELOC_BFIN_FUNCDESC_GOTOFFLO
, R_BFIN_FUNCDESC_GOTOFFLO
},
1034 { BFD_RELOC_BFIN_GOTOFF17M4
, R_BFIN_GOTOFF17M4
},
1035 { BFD_RELOC_BFIN_GOTOFFHI
, R_BFIN_GOTOFFHI
},
1036 { BFD_RELOC_BFIN_GOTOFFLO
, R_BFIN_GOTOFFLO
},
1038 { BFD_RELOC_VTABLE_INHERIT
, R_BFIN_GNU_VTINHERIT
},
1039 { BFD_RELOC_VTABLE_ENTRY
, R_BFIN_GNU_VTENTRY
},
1044 bfin_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
1046 Elf_Internal_Rela
*dst
)
1048 unsigned int r_type
;
1050 r_type
= ELF32_R_TYPE (dst
->r_info
);
1052 if (r_type
<= BFIN_RELOC_MAX
)
1053 cache_ptr
->howto
= &bfin_howto_table
[r_type
];
1055 else if (r_type
>= BFIN_GNUEXT_RELOC_MIN
&& r_type
<= BFIN_GNUEXT_RELOC_MAX
)
1056 cache_ptr
->howto
= &bfin_gnuext_howto_table
[r_type
- BFIN_GNUEXT_RELOC_MIN
];
1059 cache_ptr
->howto
= (reloc_howto_type
*) NULL
;
1062 /* Given a BFD reloc type, return the howto. */
1063 static reloc_howto_type
*
1064 bfin_bfd_reloc_type_lookup (bfd
* abfd ATTRIBUTE_UNUSED
,
1065 bfd_reloc_code_real_type code
)
1068 unsigned int r_type
= (unsigned int) -1;
1070 for (i
= sizeof (bfin_reloc_map
) / sizeof (bfin_reloc_map
[0]); i
--;)
1071 if (bfin_reloc_map
[i
].bfd_reloc_val
== code
)
1072 r_type
= bfin_reloc_map
[i
].bfin_reloc_val
;
1074 if (r_type
<= BFIN_RELOC_MAX
)
1075 return &bfin_howto_table
[r_type
];
1077 else if (r_type
>= BFIN_GNUEXT_RELOC_MIN
&& r_type
<= BFIN_GNUEXT_RELOC_MAX
)
1078 return &bfin_gnuext_howto_table
[r_type
- BFIN_GNUEXT_RELOC_MIN
];
1080 return (reloc_howto_type
*) NULL
;
1083 static reloc_howto_type
*
1084 bfin_bfd_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1090 i
< (sizeof (bfin_howto_table
)
1091 / sizeof (bfin_howto_table
[0]));
1093 if (bfin_howto_table
[i
].name
!= NULL
1094 && strcasecmp (bfin_howto_table
[i
].name
, r_name
) == 0)
1095 return &bfin_howto_table
[i
];
1098 i
< (sizeof (bfin_gnuext_howto_table
)
1099 / sizeof (bfin_gnuext_howto_table
[0]));
1101 if (bfin_gnuext_howto_table
[i
].name
!= NULL
1102 && strcasecmp (bfin_gnuext_howto_table
[i
].name
, r_name
) == 0)
1103 return &bfin_gnuext_howto_table
[i
];
1108 /* Given a bfin relocation type, return the howto. */
1109 static reloc_howto_type
*
1110 bfin_reloc_type_lookup (bfd
* abfd ATTRIBUTE_UNUSED
,
1111 unsigned int r_type
)
1113 if (r_type
<= BFIN_RELOC_MAX
)
1114 return &bfin_howto_table
[r_type
];
1116 else if (r_type
>= BFIN_GNUEXT_RELOC_MIN
&& r_type
<= BFIN_GNUEXT_RELOC_MAX
)
1117 return &bfin_gnuext_howto_table
[r_type
- BFIN_GNUEXT_RELOC_MIN
];
1119 return (reloc_howto_type
*) NULL
;
1122 /* Set by ld emulation if --code-in-l1. */
1123 bfd_boolean elf32_bfin_code_in_l1
= 0;
1125 /* Set by ld emulation if --data-in-l1. */
1126 bfd_boolean elf32_bfin_data_in_l1
= 0;
1129 elf32_bfin_final_write_processing (bfd
*abfd
,
1130 bfd_boolean linker ATTRIBUTE_UNUSED
)
1132 if (elf32_bfin_code_in_l1
)
1133 elf_elfheader (abfd
)->e_flags
|= EF_BFIN_CODE_IN_L1
;
1134 if (elf32_bfin_data_in_l1
)
1135 elf_elfheader (abfd
)->e_flags
|= EF_BFIN_DATA_IN_L1
;
1138 /* Return TRUE if the name is a local label.
1139 bfin local labels begin with L$. */
1141 bfin_is_local_label_name (bfd
*abfd
, const char *label
)
1143 if (label
[0] == 'L' && label
[1] == '$' )
1146 return _bfd_elf_is_local_label_name (abfd
, label
);
1149 /* Look through the relocs for a section during the first phase, and
1150 allocate space in the global offset table or procedure linkage
1154 bfin_check_relocs (bfd
* abfd
,
1155 struct bfd_link_info
*info
,
1157 const Elf_Internal_Rela
*relocs
)
1160 Elf_Internal_Shdr
*symtab_hdr
;
1161 struct elf_link_hash_entry
**sym_hashes
;
1162 bfd_signed_vma
*local_got_refcounts
;
1163 const Elf_Internal_Rela
*rel
;
1164 const Elf_Internal_Rela
*rel_end
;
1168 if (bfd_link_relocatable (info
))
1171 dynobj
= elf_hash_table (info
)->dynobj
;
1172 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1173 sym_hashes
= elf_sym_hashes (abfd
);
1174 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1179 rel_end
= relocs
+ sec
->reloc_count
;
1180 for (rel
= relocs
; rel
< rel_end
; rel
++)
1182 unsigned long r_symndx
;
1183 struct elf_link_hash_entry
*h
;
1185 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1186 if (r_symndx
< symtab_hdr
->sh_info
)
1190 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1192 /* PR15323, ref flags aren't set for references in the same
1194 h
->root
.non_ir_ref_regular
= 1;
1197 switch (ELF32_R_TYPE (rel
->r_info
))
1199 /* This relocation describes the C++ object vtable hierarchy.
1200 Reconstruct it for later use during GC. */
1201 case R_BFIN_GNU_VTINHERIT
:
1202 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
1206 /* This relocation describes which C++ vtable entries
1207 are actually used. Record for later use during GC. */
1208 case R_BFIN_GNU_VTENTRY
:
1209 BFD_ASSERT (h
!= NULL
);
1211 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
1217 && strcmp (h
->root
.root
.string
, "__GLOBAL_OFFSET_TABLE_") == 0)
1223 /* Create the .got section. */
1224 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
1225 if (!_bfd_elf_create_got_section (dynobj
, info
))
1229 sgot
= elf_hash_table (info
)->sgot
;
1230 srelgot
= elf_hash_table (info
)->srelgot
;
1231 BFD_ASSERT (sgot
!= NULL
);
1235 if (h
->got
.refcount
== 0)
1237 /* Make sure this symbol is output as a dynamic symbol. */
1238 if (h
->dynindx
== -1 && !h
->forced_local
)
1240 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
1244 /* Allocate space in the .got section. */
1246 /* Allocate relocation space. */
1247 srelgot
->size
+= sizeof (Elf32_External_Rela
);
1253 /* This is a global offset table entry for a local symbol. */
1254 if (local_got_refcounts
== NULL
)
1258 size
= symtab_hdr
->sh_info
;
1259 size
*= sizeof (bfd_signed_vma
);
1260 local_got_refcounts
= ((bfd_signed_vma
*)
1261 bfd_zalloc (abfd
, size
));
1262 if (local_got_refcounts
== NULL
)
1264 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1266 if (local_got_refcounts
[r_symndx
] == 0)
1269 if (bfd_link_pic (info
))
1271 /* If we are generating a shared object, we need to
1272 output a R_68K_RELATIVE reloc so that the dynamic
1273 linker can adjust this GOT entry. */
1274 srelgot
->size
+= sizeof (Elf32_External_Rela
);
1277 local_got_refcounts
[r_symndx
]++;
1289 static enum elf_reloc_type_class
1290 elf32_bfin_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
1291 const asection
*rel_sec ATTRIBUTE_UNUSED
,
1292 const Elf_Internal_Rela
* rela
)
1294 switch ((int) ELF32_R_TYPE (rela
->r_info
))
1297 return reloc_class_normal
;
1301 static bfd_reloc_status_type
1302 bfin_final_link_relocate (Elf_Internal_Rela
*rel
, reloc_howto_type
*howto
,
1303 bfd
*input_bfd
, asection
*input_section
,
1304 bfd_byte
*contents
, bfd_vma address
,
1305 bfd_vma value
, bfd_vma addend
)
1307 int r_type
= ELF32_R_TYPE (rel
->r_info
);
1309 if (r_type
== R_BFIN_PCREL24
|| r_type
== R_BFIN_PCREL24_JUMP_L
)
1311 bfd_reloc_status_type r
= bfd_reloc_ok
;
1314 if (address
> bfd_get_section_limit (input_bfd
, input_section
))
1315 return bfd_reloc_outofrange
;
1319 /* Perform usual pc-relative correction. */
1320 value
-= input_section
->output_section
->vma
+ input_section
->output_offset
;
1323 /* We are getting reloc_entry->address 2 byte off from
1324 the start of instruction. Assuming absolute postion
1325 of the reloc data. But, following code had been written assuming
1326 reloc address is starting at begining of instruction.
1327 To compensate that I have increased the value of
1328 relocation by 1 (effectively 2) and used the addr -2 instead of addr. */
1333 if ((value
& 0xFF000000) != 0
1334 && (value
& 0xFF000000) != 0xFF000000)
1335 r
= bfd_reloc_overflow
;
1339 x
= bfd_get_16 (input_bfd
, contents
+ address
);
1340 x
= (x
& 0xff00) | ((value
>> 16) & 0xff);
1341 bfd_put_16 (input_bfd
, x
, contents
+ address
);
1343 x
= bfd_get_16 (input_bfd
, contents
+ address
+ 2);
1345 bfd_put_16 (input_bfd
, x
, contents
+ address
+ 2);
1349 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
1350 rel
->r_offset
, value
, addend
);
1355 bfin_relocate_section (bfd
* output_bfd
,
1356 struct bfd_link_info
*info
,
1358 asection
* input_section
,
1359 bfd_byte
* contents
,
1360 Elf_Internal_Rela
* relocs
,
1361 Elf_Internal_Sym
* local_syms
,
1362 asection
** local_sections
)
1365 Elf_Internal_Shdr
*symtab_hdr
;
1366 struct elf_link_hash_entry
**sym_hashes
;
1367 bfd_vma
*local_got_offsets
;
1369 Elf_Internal_Rela
*rel
;
1370 Elf_Internal_Rela
*relend
;
1373 dynobj
= elf_hash_table (info
)->dynobj
;
1374 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
1375 sym_hashes
= elf_sym_hashes (input_bfd
);
1376 local_got_offsets
= elf_local_got_offsets (input_bfd
);
1381 relend
= relocs
+ input_section
->reloc_count
;
1382 for (; rel
< relend
; rel
++, i
++)
1385 reloc_howto_type
*howto
;
1386 unsigned long r_symndx
;
1387 struct elf_link_hash_entry
*h
;
1388 Elf_Internal_Sym
*sym
;
1390 bfd_vma relocation
= 0;
1391 bfd_boolean unresolved_reloc
;
1392 bfd_reloc_status_type r
;
1395 r_type
= ELF32_R_TYPE (rel
->r_info
);
1396 if (r_type
< 0 || r_type
>= 243)
1398 bfd_set_error (bfd_error_bad_value
);
1402 if (r_type
== R_BFIN_GNU_VTENTRY
1403 || r_type
== R_BFIN_GNU_VTINHERIT
)
1406 howto
= bfin_reloc_type_lookup (input_bfd
, r_type
);
1409 bfd_set_error (bfd_error_bad_value
);
1412 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1417 unresolved_reloc
= FALSE
;
1419 if (r_symndx
< symtab_hdr
->sh_info
)
1421 sym
= local_syms
+ r_symndx
;
1422 sec
= local_sections
[r_symndx
];
1423 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
1427 bfd_boolean warned
, ignored
;
1429 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
1430 r_symndx
, symtab_hdr
, sym_hashes
,
1432 unresolved_reloc
, warned
, ignored
);
1435 if (sec
!= NULL
&& discarded_section (sec
))
1436 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
1437 rel
, 1, relend
, howto
, 0, contents
);
1439 if (bfd_link_relocatable (info
))
1442 address
= rel
->r_offset
;
1444 /* Then, process normally. */
1447 case R_BFIN_GNU_VTINHERIT
:
1448 case R_BFIN_GNU_VTENTRY
:
1449 return bfd_reloc_ok
;
1452 /* Relocation is to the address of the entry for this symbol
1453 in the global offset table. */
1455 && strcmp (h
->root
.root
.string
, "__GLOBAL_OFFSET_TABLE_") == 0)
1458 /* Relocation is the offset of the entry for this symbol in
1459 the global offset table. */
1466 /* Create the .got section. */
1467 elf_hash_table (info
)->dynobj
= dynobj
= output_bfd
;
1468 if (!_bfd_elf_create_got_section (dynobj
, info
))
1472 sgot
= elf_hash_table (info
)->sgot
;
1473 BFD_ASSERT (sgot
!= NULL
);
1479 off
= h
->got
.offset
;
1480 BFD_ASSERT (off
!= (bfd_vma
) - 1);
1481 dyn
= elf_hash_table (info
)->dynamic_sections_created
;
1483 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
1484 bfd_link_pic (info
),
1486 || (bfd_link_pic (info
)
1492 /* This is actually a static link, or it is a
1493 -Bsymbolic link and the symbol is defined
1494 locally, or the symbol was forced to be local
1495 because of a version file.. We must initialize
1496 this entry in the global offset table. Since
1497 the offset must always be a multiple of 4, we
1498 use the least significant bit to record whether
1499 we have initialized it already.
1501 When doing a dynamic link, we create a .rela.got
1502 relocation entry to initialize the value. This
1503 is done in the finish_dynamic_symbol routine. */
1508 bfd_put_32 (output_bfd
, relocation
,
1509 sgot
->contents
+ off
);
1514 unresolved_reloc
= FALSE
;
1518 BFD_ASSERT (local_got_offsets
!= NULL
);
1519 off
= local_got_offsets
[r_symndx
];
1520 BFD_ASSERT (off
!= (bfd_vma
) - 1);
1522 /* The offset must always be a multiple of 4. We use
1523 the least significant bit to record whether we have
1524 already generated the necessary reloc. */
1529 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1531 if (bfd_link_pic (info
))
1534 Elf_Internal_Rela outrel
;
1537 s
= elf_hash_table (info
)->srelgot
;
1538 BFD_ASSERT (s
!= NULL
);
1540 outrel
.r_offset
= (sgot
->output_section
->vma
1541 + sgot
->output_offset
+ off
);
1543 ELF32_R_INFO (0, R_BFIN_PCREL24
);
1544 outrel
.r_addend
= relocation
;
1547 s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1548 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1551 local_got_offsets
[r_symndx
] |= 1;
1555 relocation
= sgot
->output_offset
+ off
;
1557 /* bfin : preg = [preg + 17bitdiv4offset] relocation is div by 4. */
1564 r
= bfin_final_link_relocate (rel
, howto
, input_bfd
, input_section
,
1566 relocation
, rel
->r_addend
);
1571 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
1572 because such sections are not SEC_ALLOC and thus ld.so will
1573 not process them. */
1574 if (unresolved_reloc
1575 && !((input_section
->flags
& SEC_DEBUGGING
) != 0 && h
->def_dynamic
)
1576 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
1577 rel
->r_offset
) != (bfd_vma
) -1)
1580 /* xgettext:c-format */
1581 (_("%B(%A+%#Lx): unresolvable relocation against symbol `%s'"),
1583 input_section
, rel
->r_offset
, h
->root
.root
.string
);
1587 if (r
!= bfd_reloc_ok
)
1592 name
= h
->root
.root
.string
;
1595 name
= bfd_elf_string_from_elf_section (input_bfd
,
1596 symtab_hdr
->sh_link
,
1601 name
= bfd_section_name (input_bfd
, sec
);
1604 if (r
== bfd_reloc_overflow
)
1605 (*info
->callbacks
->reloc_overflow
)
1606 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
1607 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
1611 /* xgettext:c-format */
1612 (_("%B(%A+%#Lx): reloc against `%s': error %d"),
1613 input_bfd
, input_section
, rel
->r_offset
, name
, (int) r
);
1623 bfin_gc_mark_hook (asection
* sec
,
1624 struct bfd_link_info
*info
,
1625 Elf_Internal_Rela
* rel
,
1626 struct elf_link_hash_entry
*h
,
1627 Elf_Internal_Sym
* sym
)
1630 switch (ELF32_R_TYPE (rel
->r_info
))
1632 case R_BFIN_GNU_VTINHERIT
:
1633 case R_BFIN_GNU_VTENTRY
:
1637 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1640 /* Update the got entry reference counts for the section being removed. */
1643 bfin_gc_sweep_hook (bfd
* abfd
,
1644 struct bfd_link_info
*info
,
1646 const Elf_Internal_Rela
* relocs
)
1648 Elf_Internal_Shdr
*symtab_hdr
;
1649 struct elf_link_hash_entry
**sym_hashes
;
1650 bfd_signed_vma
*local_got_refcounts
;
1651 const Elf_Internal_Rela
*rel
, *relend
;
1656 dynobj
= elf_hash_table (info
)->dynobj
;
1660 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1661 sym_hashes
= elf_sym_hashes (abfd
);
1662 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1664 sgot
= elf_hash_table (info
)->sgot
;
1665 srelgot
= elf_hash_table (info
)->srelgot
;
1667 relend
= relocs
+ sec
->reloc_count
;
1668 for (rel
= relocs
; rel
< relend
; rel
++)
1670 unsigned long r_symndx
;
1671 struct elf_link_hash_entry
*h
;
1673 switch (ELF32_R_TYPE (rel
->r_info
))
1676 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1677 if (r_symndx
>= symtab_hdr
->sh_info
)
1679 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1680 if (h
->got
.refcount
> 0)
1683 if (h
->got
.refcount
== 0)
1685 /* We don't need the .got entry any more. */
1687 srelgot
->size
-= sizeof (Elf32_External_Rela
);
1691 else if (local_got_refcounts
!= NULL
)
1693 if (local_got_refcounts
[r_symndx
] > 0)
1695 --local_got_refcounts
[r_symndx
];
1696 if (local_got_refcounts
[r_symndx
] == 0)
1698 /* We don't need the .got entry any more. */
1700 if (bfd_link_pic (info
))
1701 srelgot
->size
-= sizeof (Elf32_External_Rela
);
1713 extern const bfd_target bfin_elf32_fdpic_vec
;
1714 #define IS_FDPIC(bfd) ((bfd)->xvec == &bfin_elf32_fdpic_vec)
1716 /* An extension of the elf hash table data structure,
1717 containing some additional Blackfin-specific data. */
1718 struct bfinfdpic_elf_link_hash_table
1720 struct elf_link_hash_table elf
;
1722 /* A pointer to the .rofixup section. */
1723 asection
*sgotfixup
;
1724 /* GOT base offset. */
1726 /* Location of the first non-lazy PLT entry, i.e., the number of
1727 bytes taken by lazy PLT entries. */
1729 /* A hash table holding information about which symbols were
1730 referenced with which PIC-related relocations. */
1731 struct htab
*relocs_info
;
1732 /* Summary reloc information collected by
1733 _bfinfdpic_count_got_plt_entries. */
1734 struct _bfinfdpic_dynamic_got_info
*g
;
1737 /* Get the Blackfin ELF linker hash table from a link_info structure. */
1739 #define bfinfdpic_hash_table(info) \
1740 (elf_hash_table_id ((struct elf_link_hash_table *) ((info)->hash)) \
1741 == BFIN_ELF_DATA ? ((struct bfinfdpic_elf_link_hash_table *) ((info)->hash)) : NULL)
1743 #define bfinfdpic_got_section(info) \
1744 (bfinfdpic_hash_table (info)->elf.sgot)
1745 #define bfinfdpic_gotrel_section(info) \
1746 (bfinfdpic_hash_table (info)->elf.srelgot)
1747 #define bfinfdpic_gotfixup_section(info) \
1748 (bfinfdpic_hash_table (info)->sgotfixup)
1749 #define bfinfdpic_plt_section(info) \
1750 (bfinfdpic_hash_table (info)->elf.splt)
1751 #define bfinfdpic_pltrel_section(info) \
1752 (bfinfdpic_hash_table (info)->elf.srelplt)
1753 #define bfinfdpic_relocs_info(info) \
1754 (bfinfdpic_hash_table (info)->relocs_info)
1755 #define bfinfdpic_got_initial_offset(info) \
1756 (bfinfdpic_hash_table (info)->got0)
1757 #define bfinfdpic_plt_initial_offset(info) \
1758 (bfinfdpic_hash_table (info)->plt0)
1759 #define bfinfdpic_dynamic_got_plt_info(info) \
1760 (bfinfdpic_hash_table (info)->g)
1762 /* The name of the dynamic interpreter. This is put in the .interp
1765 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
1767 #define DEFAULT_STACK_SIZE 0x20000
1769 /* This structure is used to collect the number of entries present in
1770 each addressable range of the got. */
1771 struct _bfinfdpic_dynamic_got_info
1773 /* Several bits of information about the current link. */
1774 struct bfd_link_info
*info
;
1775 /* Total size needed for GOT entries within the 18- or 32-bit
1777 bfd_vma got17m4
, gothilo
;
1778 /* Total size needed for function descriptor entries within the 18-
1779 or 32-bit ranges. */
1780 bfd_vma fd17m4
, fdhilo
;
1781 /* Total size needed function descriptor entries referenced in PLT
1782 entries, that would be profitable to place in offsets close to
1783 the PIC register. */
1785 /* Total size needed by lazy PLT entries. */
1787 /* Number of relocations carried over from input object files. */
1788 unsigned long relocs
;
1789 /* Number of fixups introduced by relocations in input object files. */
1790 unsigned long fixups
;
1793 /* Create a Blackfin ELF linker hash table. */
1795 static struct bfd_link_hash_table
*
1796 bfinfdpic_elf_link_hash_table_create (bfd
*abfd
)
1798 struct bfinfdpic_elf_link_hash_table
*ret
;
1799 bfd_size_type amt
= sizeof (struct bfinfdpic_elf_link_hash_table
);
1801 ret
= bfd_zmalloc (amt
);
1805 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
1806 _bfd_elf_link_hash_newfunc
,
1807 sizeof (struct elf_link_hash_entry
),
1814 return &ret
->elf
.root
;
1817 /* Decide whether a reference to a symbol can be resolved locally or
1818 not. If the symbol is protected, we want the local address, but
1819 its function descriptor must be assigned by the dynamic linker. */
1820 #define BFINFDPIC_SYM_LOCAL(INFO, H) \
1821 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \
1822 || ! elf_hash_table (INFO)->dynamic_sections_created)
1823 #define BFINFDPIC_FUNCDESC_LOCAL(INFO, H) \
1824 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created)
1826 /* This structure collects information on what kind of GOT, PLT or
1827 function descriptors are required by relocations that reference a
1829 struct bfinfdpic_relocs_info
1831 /* The index of the symbol, as stored in the relocation r_info, if
1832 we have a local symbol; -1 otherwise. */
1836 /* The input bfd in which the symbol is defined, if it's a local
1839 /* If symndx == -1, the hash table entry corresponding to a global
1840 symbol (even if it turns out to bind locally, in which case it
1841 should ideally be replaced with section's symndx + addend). */
1842 struct elf_link_hash_entry
*h
;
1844 /* The addend of the relocation that references the symbol. */
1847 /* The fields above are used to identify an entry. The fields below
1848 contain information on how an entry is used and, later on, which
1849 locations it was assigned. */
1850 /* The following 2 fields record whether the symbol+addend above was
1851 ever referenced with a GOT relocation. The 17M4 suffix indicates a
1852 GOT17M4 relocation; hilo is used for GOTLO/GOTHI pairs. */
1855 /* Whether a FUNCDESC relocation references symbol+addend. */
1857 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */
1860 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */
1861 unsigned fdgoff17m4
;
1862 unsigned fdgoffhilo
;
1863 /* Whether symbol+addend is referenced with GOTOFF17M4, GOTOFFLO or
1864 GOTOFFHI relocations. The addend doesn't really matter, since we
1865 envision that this will only be used to check whether the symbol
1866 is mapped to the same segment as the got. */
1868 /* Whether symbol+addend is referenced by a LABEL24 relocation. */
1870 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE
1873 /* Whether we need a PLT entry for a symbol. Should be implied by
1875 (call && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)) */
1877 /* Whether a function descriptor should be created in this link unit
1878 for symbol+addend. Should be implied by something like:
1879 (plt || fdgotoff17m4 || fdgotofflohi
1880 || ((fd || fdgot17m4 || fdgothilo)
1881 && (symndx != -1 || BFINFDPIC_FUNCDESC_LOCAL (info, d.h)))) */
1883 /* Whether a lazy PLT entry is needed for this symbol+addend.
1884 Should be implied by something like:
1885 (privfd && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)
1886 && ! (info->flags & DF_BIND_NOW)) */
1888 /* Whether we've already emitted GOT relocations and PLT entries as
1889 needed for this symbol. */
1892 /* The number of R_BFIN_BYTE4_DATA, R_BFIN_FUNCDESC and R_BFIN_FUNCDESC_VALUE
1893 relocations referencing the symbol. */
1894 unsigned relocs32
, relocsfd
, relocsfdv
;
1896 /* The number of .rofixups entries and dynamic relocations allocated
1897 for this symbol, minus any that might have already been used. */
1898 unsigned fixups
, dynrelocs
;
1900 /* The offsets of the GOT entries assigned to symbol+addend, to the
1901 function descriptor's address, and to a function descriptor,
1902 respectively. Should be zero if unassigned. The offsets are
1903 counted from the value that will be assigned to the PIC register,
1904 not from the beginning of the .got section. */
1905 bfd_signed_vma got_entry
, fdgot_entry
, fd_entry
;
1906 /* The offsets of the PLT entries assigned to symbol+addend,
1907 non-lazy and lazy, respectively. If unassigned, should be
1909 bfd_vma plt_entry
, lzplt_entry
;
1912 /* Compute a hash with the key fields of an bfinfdpic_relocs_info entry. */
1914 bfinfdpic_relocs_info_hash (const void *entry_
)
1916 const struct bfinfdpic_relocs_info
*entry
= entry_
;
1918 return (entry
->symndx
== -1
1919 ? (long) entry
->d
.h
->root
.root
.hash
1920 : entry
->symndx
+ (long) entry
->d
.abfd
->id
* 257) + entry
->addend
;
1923 /* Test whether the key fields of two bfinfdpic_relocs_info entries are
1926 bfinfdpic_relocs_info_eq (const void *entry1
, const void *entry2
)
1928 const struct bfinfdpic_relocs_info
*e1
= entry1
;
1929 const struct bfinfdpic_relocs_info
*e2
= entry2
;
1931 return e1
->symndx
== e2
->symndx
&& e1
->addend
== e2
->addend
1932 && (e1
->symndx
== -1 ? e1
->d
.h
== e2
->d
.h
: e1
->d
.abfd
== e2
->d
.abfd
);
1935 /* Find or create an entry in a hash table HT that matches the key
1936 fields of the given ENTRY. If it's not found, memory for a new
1937 entry is allocated in ABFD's obstack. */
1938 static struct bfinfdpic_relocs_info
*
1939 bfinfdpic_relocs_info_find (struct htab
*ht
,
1941 const struct bfinfdpic_relocs_info
*entry
,
1942 enum insert_option insert
)
1944 struct bfinfdpic_relocs_info
**loc
;
1949 loc
= (struct bfinfdpic_relocs_info
**) htab_find_slot (ht
, entry
, insert
);
1957 *loc
= bfd_zalloc (abfd
, sizeof (**loc
));
1962 (*loc
)->symndx
= entry
->symndx
;
1963 (*loc
)->d
= entry
->d
;
1964 (*loc
)->addend
= entry
->addend
;
1965 (*loc
)->plt_entry
= (bfd_vma
)-1;
1966 (*loc
)->lzplt_entry
= (bfd_vma
)-1;
1971 /* Obtain the address of the entry in HT associated with H's symbol +
1972 addend, creating a new entry if none existed. ABFD is only used
1973 for memory allocation purposes. */
1974 inline static struct bfinfdpic_relocs_info
*
1975 bfinfdpic_relocs_info_for_global (struct htab
*ht
,
1977 struct elf_link_hash_entry
*h
,
1979 enum insert_option insert
)
1981 struct bfinfdpic_relocs_info entry
;
1985 entry
.addend
= addend
;
1987 return bfinfdpic_relocs_info_find (ht
, abfd
, &entry
, insert
);
1990 /* Obtain the address of the entry in HT associated with the SYMNDXth
1991 local symbol of the input bfd ABFD, plus the addend, creating a new
1992 entry if none existed. */
1993 inline static struct bfinfdpic_relocs_info
*
1994 bfinfdpic_relocs_info_for_local (struct htab
*ht
,
1998 enum insert_option insert
)
2000 struct bfinfdpic_relocs_info entry
;
2002 entry
.symndx
= symndx
;
2003 entry
.d
.abfd
= abfd
;
2004 entry
.addend
= addend
;
2006 return bfinfdpic_relocs_info_find (ht
, abfd
, &entry
, insert
);
2009 /* Merge fields set by check_relocs() of two entries that end up being
2010 mapped to the same (presumably global) symbol. */
2013 bfinfdpic_pic_merge_early_relocs_info (struct bfinfdpic_relocs_info
*e2
,
2014 struct bfinfdpic_relocs_info
const *e1
)
2016 e2
->got17m4
|= e1
->got17m4
;
2017 e2
->gothilo
|= e1
->gothilo
;
2019 e2
->fdgot17m4
|= e1
->fdgot17m4
;
2020 e2
->fdgothilo
|= e1
->fdgothilo
;
2021 e2
->fdgoff17m4
|= e1
->fdgoff17m4
;
2022 e2
->fdgoffhilo
|= e1
->fdgoffhilo
;
2023 e2
->gotoff
|= e1
->gotoff
;
2024 e2
->call
|= e1
->call
;
2028 /* Every block of 65535 lazy PLT entries shares a single call to the
2029 resolver, inserted in the 32768th lazy PLT entry (i.e., entry #
2030 32767, counting from 0). All other lazy PLT entries branch to it
2031 in a single instruction. */
2033 #define LZPLT_RESOLVER_EXTRA 10
2034 #define LZPLT_NORMAL_SIZE 6
2035 #define LZPLT_ENTRIES 1362
2037 #define BFINFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) LZPLT_NORMAL_SIZE * LZPLT_ENTRIES + LZPLT_RESOLVER_EXTRA)
2038 #define BFINFDPIC_LZPLT_RESOLV_LOC (LZPLT_NORMAL_SIZE * LZPLT_ENTRIES / 2)
2040 /* Add a dynamic relocation to the SRELOC section. */
2042 inline static bfd_vma
2043 _bfinfdpic_add_dyn_reloc (bfd
*output_bfd
, asection
*sreloc
, bfd_vma offset
,
2044 int reloc_type
, long dynindx
, bfd_vma addend
,
2045 struct bfinfdpic_relocs_info
*entry
)
2047 Elf_Internal_Rela outrel
;
2048 bfd_vma reloc_offset
;
2050 outrel
.r_offset
= offset
;
2051 outrel
.r_info
= ELF32_R_INFO (dynindx
, reloc_type
);
2052 outrel
.r_addend
= addend
;
2054 reloc_offset
= sreloc
->reloc_count
* sizeof (Elf32_External_Rel
);
2055 BFD_ASSERT (reloc_offset
< sreloc
->size
);
2056 bfd_elf32_swap_reloc_out (output_bfd
, &outrel
,
2057 sreloc
->contents
+ reloc_offset
);
2058 sreloc
->reloc_count
++;
2060 /* If the entry's index is zero, this relocation was probably to a
2061 linkonce section that got discarded. We reserved a dynamic
2062 relocation, but it was for another entry than the one we got at
2063 the time of emitting the relocation. Unfortunately there's no
2064 simple way for us to catch this situation, since the relocation
2065 is cleared right before calling relocate_section, at which point
2066 we no longer know what the relocation used to point to. */
2069 BFD_ASSERT (entry
->dynrelocs
> 0);
2073 return reloc_offset
;
2076 /* Add a fixup to the ROFIXUP section. */
2079 _bfinfdpic_add_rofixup (bfd
*output_bfd
, asection
*rofixup
, bfd_vma offset
,
2080 struct bfinfdpic_relocs_info
*entry
)
2082 bfd_vma fixup_offset
;
2084 if (rofixup
->flags
& SEC_EXCLUDE
)
2087 fixup_offset
= rofixup
->reloc_count
* 4;
2088 if (rofixup
->contents
)
2090 BFD_ASSERT (fixup_offset
< rofixup
->size
);
2091 bfd_put_32 (output_bfd
, offset
, rofixup
->contents
+ fixup_offset
);
2093 rofixup
->reloc_count
++;
2095 if (entry
&& entry
->symndx
)
2097 /* See discussion about symndx == 0 in _bfinfdpic_add_dyn_reloc
2099 BFD_ASSERT (entry
->fixups
> 0);
2103 return fixup_offset
;
2106 /* Find the segment number in which OSEC, and output section, is
2110 _bfinfdpic_osec_to_segment (bfd
*output_bfd
, asection
*osec
)
2112 Elf_Internal_Phdr
*p
= _bfd_elf_find_segment_containing_section (output_bfd
, osec
);
2114 return (p
!= NULL
) ? p
- elf_tdata (output_bfd
)->phdr
: -1;
2117 inline static bfd_boolean
2118 _bfinfdpic_osec_readonly_p (bfd
*output_bfd
, asection
*osec
)
2120 unsigned seg
= _bfinfdpic_osec_to_segment (output_bfd
, osec
);
2122 return ! (elf_tdata (output_bfd
)->phdr
[seg
].p_flags
& PF_W
);
2125 /* Generate relocations for GOT entries, function descriptors, and
2126 code for PLT and lazy PLT entries. */
2128 inline static bfd_boolean
2129 _bfinfdpic_emit_got_relocs_plt_entries (struct bfinfdpic_relocs_info
*entry
,
2131 struct bfd_link_info
*info
,
2133 Elf_Internal_Sym
*sym
,
2136 bfd_vma fd_lazy_rel_offset
= (bfd_vma
) -1;
2143 if (entry
->got_entry
|| entry
->fdgot_entry
|| entry
->fd_entry
)
2145 /* If the symbol is dynamic, consider it for dynamic
2146 relocations, otherwise decay to section + offset. */
2147 if (entry
->symndx
== -1 && entry
->d
.h
->dynindx
!= -1)
2148 dynindx
= entry
->d
.h
->dynindx
;
2152 && sec
->output_section
2153 && ! bfd_is_abs_section (sec
->output_section
)
2154 && ! bfd_is_und_section (sec
->output_section
))
2155 dynindx
= elf_section_data (sec
->output_section
)->dynindx
;
2161 /* Generate relocation for GOT entry pointing to the symbol. */
2162 if (entry
->got_entry
)
2165 bfd_vma ad
= addend
;
2167 /* If the symbol is dynamic but binds locally, use
2169 if (sec
&& (entry
->symndx
!= -1
2170 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2172 if (entry
->symndx
== -1)
2173 ad
+= entry
->d
.h
->root
.u
.def
.value
;
2175 ad
+= sym
->st_value
;
2176 ad
+= sec
->output_offset
;
2177 if (sec
->output_section
&& elf_section_data (sec
->output_section
))
2178 idx
= elf_section_data (sec
->output_section
)->dynindx
;
2183 /* If we're linking an executable at a fixed address, we can
2184 omit the dynamic relocation as long as the symbol is local to
2186 if (bfd_link_pde (info
)
2187 && (entry
->symndx
!= -1
2188 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2191 ad
+= sec
->output_section
->vma
;
2192 if (entry
->symndx
!= -1
2193 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
2194 _bfinfdpic_add_rofixup (output_bfd
,
2195 bfinfdpic_gotfixup_section (info
),
2196 bfinfdpic_got_section (info
)->output_section
2198 + bfinfdpic_got_section (info
)->output_offset
2199 + bfinfdpic_got_initial_offset (info
)
2200 + entry
->got_entry
, entry
);
2203 _bfinfdpic_add_dyn_reloc (output_bfd
, bfinfdpic_gotrel_section (info
),
2204 _bfd_elf_section_offset
2206 bfinfdpic_got_section (info
),
2207 bfinfdpic_got_initial_offset (info
)
2209 + bfinfdpic_got_section (info
)
2210 ->output_section
->vma
2211 + bfinfdpic_got_section (info
)->output_offset
,
2212 R_BFIN_BYTE4_DATA
, idx
, ad
, entry
);
2214 bfd_put_32 (output_bfd
, ad
,
2215 bfinfdpic_got_section (info
)->contents
2216 + bfinfdpic_got_initial_offset (info
)
2217 + entry
->got_entry
);
2220 /* Generate relocation for GOT entry pointing to a canonical
2221 function descriptor. */
2222 if (entry
->fdgot_entry
)
2227 if (! (entry
->symndx
== -1
2228 && entry
->d
.h
->root
.type
== bfd_link_hash_undefweak
2229 && BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2231 /* If the symbol is dynamic and there may be dynamic symbol
2232 resolution because we are, or are linked with, a shared
2233 library, emit a FUNCDESC relocation such that the dynamic
2234 linker will allocate the function descriptor. If the
2235 symbol needs a non-local function descriptor but binds
2236 locally (e.g., its visibility is protected, emit a
2237 dynamic relocation decayed to section+offset. */
2238 if (entry
->symndx
== -1
2239 && ! BFINFDPIC_FUNCDESC_LOCAL (info
, entry
->d
.h
)
2240 && BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)
2241 && !bfd_link_pde (info
))
2243 reloc
= R_BFIN_FUNCDESC
;
2244 idx
= elf_section_data (entry
->d
.h
->root
.u
.def
.section
2245 ->output_section
)->dynindx
;
2246 ad
= entry
->d
.h
->root
.u
.def
.section
->output_offset
2247 + entry
->d
.h
->root
.u
.def
.value
;
2249 else if (entry
->symndx
== -1
2250 && ! BFINFDPIC_FUNCDESC_LOCAL (info
, entry
->d
.h
))
2252 reloc
= R_BFIN_FUNCDESC
;
2260 /* Otherwise, we know we have a private function descriptor,
2261 so reference it directly. */
2262 if (elf_hash_table (info
)->dynamic_sections_created
)
2263 BFD_ASSERT (entry
->privfd
);
2264 reloc
= R_BFIN_BYTE4_DATA
;
2265 idx
= elf_section_data (bfinfdpic_got_section (info
)
2266 ->output_section
)->dynindx
;
2267 ad
= bfinfdpic_got_section (info
)->output_offset
2268 + bfinfdpic_got_initial_offset (info
) + entry
->fd_entry
;
2271 /* If there is room for dynamic symbol resolution, emit the
2272 dynamic relocation. However, if we're linking an
2273 executable at a fixed location, we won't have emitted a
2274 dynamic symbol entry for the got section, so idx will be
2275 zero, which means we can and should compute the address
2276 of the private descriptor ourselves. */
2277 if (bfd_link_pde (info
)
2278 && (entry
->symndx
!= -1
2279 || BFINFDPIC_FUNCDESC_LOCAL (info
, entry
->d
.h
)))
2281 ad
+= bfinfdpic_got_section (info
)->output_section
->vma
;
2282 _bfinfdpic_add_rofixup (output_bfd
,
2283 bfinfdpic_gotfixup_section (info
),
2284 bfinfdpic_got_section (info
)
2285 ->output_section
->vma
2286 + bfinfdpic_got_section (info
)
2288 + bfinfdpic_got_initial_offset (info
)
2289 + entry
->fdgot_entry
, entry
);
2292 _bfinfdpic_add_dyn_reloc (output_bfd
,
2293 bfinfdpic_gotrel_section (info
),
2294 _bfd_elf_section_offset
2296 bfinfdpic_got_section (info
),
2297 bfinfdpic_got_initial_offset (info
)
2298 + entry
->fdgot_entry
)
2299 + bfinfdpic_got_section (info
)
2300 ->output_section
->vma
2301 + bfinfdpic_got_section (info
)
2303 reloc
, idx
, ad
, entry
);
2306 bfd_put_32 (output_bfd
, ad
,
2307 bfinfdpic_got_section (info
)->contents
2308 + bfinfdpic_got_initial_offset (info
)
2309 + entry
->fdgot_entry
);
2312 /* Generate relocation to fill in a private function descriptor in
2314 if (entry
->fd_entry
)
2317 bfd_vma ad
= addend
;
2319 long lowword
, highword
;
2321 /* If the symbol is dynamic but binds locally, use
2323 if (sec
&& (entry
->symndx
!= -1
2324 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2326 if (entry
->symndx
== -1)
2327 ad
+= entry
->d
.h
->root
.u
.def
.value
;
2329 ad
+= sym
->st_value
;
2330 ad
+= sec
->output_offset
;
2331 if (sec
->output_section
&& elf_section_data (sec
->output_section
))
2332 idx
= elf_section_data (sec
->output_section
)->dynindx
;
2337 /* If we're linking an executable at a fixed address, we can
2338 omit the dynamic relocation as long as the symbol is local to
2340 if (bfd_link_pde (info
)
2341 && (entry
->symndx
!= -1 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2344 ad
+= sec
->output_section
->vma
;
2346 if (entry
->symndx
!= -1
2347 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
2349 _bfinfdpic_add_rofixup (output_bfd
,
2350 bfinfdpic_gotfixup_section (info
),
2351 bfinfdpic_got_section (info
)
2352 ->output_section
->vma
2353 + bfinfdpic_got_section (info
)
2355 + bfinfdpic_got_initial_offset (info
)
2356 + entry
->fd_entry
, entry
);
2357 _bfinfdpic_add_rofixup (output_bfd
,
2358 bfinfdpic_gotfixup_section (info
),
2359 bfinfdpic_got_section (info
)
2360 ->output_section
->vma
2361 + bfinfdpic_got_section (info
)
2363 + bfinfdpic_got_initial_offset (info
)
2364 + entry
->fd_entry
+ 4, entry
);
2370 = _bfinfdpic_add_dyn_reloc (output_bfd
,
2372 ? bfinfdpic_pltrel_section (info
)
2373 : bfinfdpic_gotrel_section (info
),
2374 _bfd_elf_section_offset
2376 bfinfdpic_got_section (info
),
2377 bfinfdpic_got_initial_offset (info
)
2379 + bfinfdpic_got_section (info
)
2380 ->output_section
->vma
2381 + bfinfdpic_got_section (info
)
2383 R_BFIN_FUNCDESC_VALUE
, idx
, ad
, entry
);
2386 /* If we've omitted the dynamic relocation, just emit the fixed
2387 addresses of the symbol and of the local GOT base offset. */
2388 if (bfd_link_pde (info
)
2390 && sec
->output_section
)
2393 highword
= bfinfdpic_got_section (info
)->output_section
->vma
2394 + bfinfdpic_got_section (info
)->output_offset
2395 + bfinfdpic_got_initial_offset (info
);
2397 else if (entry
->lazyplt
)
2402 fd_lazy_rel_offset
= ofst
;
2404 /* A function descriptor used for lazy or local resolving is
2405 initialized such that its high word contains the output
2406 section index in which the PLT entries are located, and
2407 the low word contains the address of the lazy PLT entry
2408 entry point, that must be within the memory region
2409 assigned to that section. */
2410 lowword
= entry
->lzplt_entry
+ 4
2411 + bfinfdpic_plt_section (info
)->output_offset
2412 + bfinfdpic_plt_section (info
)->output_section
->vma
;
2413 highword
= _bfinfdpic_osec_to_segment
2414 (output_bfd
, bfinfdpic_plt_section (info
)->output_section
);
2418 /* A function descriptor for a local function gets the index
2419 of the section. For a non-local function, it's
2423 || (entry
->symndx
== -1 && entry
->d
.h
->dynindx
!= -1
2424 && entry
->d
.h
->dynindx
== idx
))
2427 highword
= _bfinfdpic_osec_to_segment
2428 (output_bfd
, sec
->output_section
);
2431 bfd_put_32 (output_bfd
, lowword
,
2432 bfinfdpic_got_section (info
)->contents
2433 + bfinfdpic_got_initial_offset (info
)
2435 bfd_put_32 (output_bfd
, highword
,
2436 bfinfdpic_got_section (info
)->contents
2437 + bfinfdpic_got_initial_offset (info
)
2438 + entry
->fd_entry
+ 4);
2441 /* Generate code for the PLT entry. */
2442 if (entry
->plt_entry
!= (bfd_vma
) -1)
2444 bfd_byte
*plt_code
= bfinfdpic_plt_section (info
)->contents
2447 BFD_ASSERT (entry
->fd_entry
);
2449 /* Figure out what kind of PLT entry we need, depending on the
2450 location of the function descriptor within the GOT. */
2451 if (entry
->fd_entry
>= -(1 << (18 - 1))
2452 && entry
->fd_entry
+ 4 < (1 << (18 - 1)))
2454 /* P1 = [P3 + fd_entry]; P3 = [P3 + fd_entry + 4] */
2455 bfd_put_32 (output_bfd
,
2456 0xe519 | ((entry
->fd_entry
<< 14) & 0xFFFF0000),
2458 bfd_put_32 (output_bfd
,
2459 0xe51b | (((entry
->fd_entry
+ 4) << 14) & 0xFFFF0000),
2465 /* P1.L = fd_entry; P1.H = fd_entry;
2469 bfd_put_32 (output_bfd
,
2470 0xe109 | (entry
->fd_entry
<< 16),
2472 bfd_put_32 (output_bfd
,
2473 0xe149 | (entry
->fd_entry
& 0xFFFF0000),
2475 bfd_put_16 (output_bfd
, 0x5ad9, plt_code
+ 8);
2476 bfd_put_16 (output_bfd
, 0x9159, plt_code
+ 10);
2477 bfd_put_16 (output_bfd
, 0xac5b, plt_code
+ 12);
2481 bfd_put_16 (output_bfd
, 0x0051, plt_code
);
2484 /* Generate code for the lazy PLT entry. */
2485 if (entry
->lzplt_entry
!= (bfd_vma
) -1)
2487 bfd_byte
*lzplt_code
= bfinfdpic_plt_section (info
)->contents
2488 + entry
->lzplt_entry
;
2489 bfd_vma resolverStub_addr
;
2491 bfd_put_32 (output_bfd
, fd_lazy_rel_offset
, lzplt_code
);
2494 resolverStub_addr
= entry
->lzplt_entry
/ BFINFDPIC_LZPLT_BLOCK_SIZE
2495 * BFINFDPIC_LZPLT_BLOCK_SIZE
+ BFINFDPIC_LZPLT_RESOLV_LOC
;
2496 if (resolverStub_addr
>= bfinfdpic_plt_initial_offset (info
))
2497 resolverStub_addr
= bfinfdpic_plt_initial_offset (info
) - LZPLT_NORMAL_SIZE
- LZPLT_RESOLVER_EXTRA
;
2499 if (entry
->lzplt_entry
== resolverStub_addr
)
2501 /* This is a lazy PLT entry that includes a resolver call.
2505 bfd_put_32 (output_bfd
,
2508 bfd_put_16 (output_bfd
, 0x0052, lzplt_code
+ 4);
2512 /* JUMP.S resolverStub */
2513 bfd_put_16 (output_bfd
,
2515 | (((resolverStub_addr
- entry
->lzplt_entry
)
2516 / 2) & (((bfd_vma
)1 << 12) - 1)),
2524 /* Relocate an Blackfin ELF section.
2526 The RELOCATE_SECTION function is called by the new ELF backend linker
2527 to handle the relocations for a section.
2529 The relocs are always passed as Rela structures; if the section
2530 actually uses Rel structures, the r_addend field will always be
2533 This function is responsible for adjusting the section contents as
2534 necessary, and (if using Rela relocs and generating a relocatable
2535 output file) adjusting the reloc addend as necessary.
2537 This function does not have to worry about setting the reloc
2538 address or the reloc symbol index.
2540 LOCAL_SYMS is a pointer to the swapped in local symbols.
2542 LOCAL_SECTIONS is an array giving the section in the input file
2543 corresponding to the st_shndx field of each local symbol.
2545 The global hash table entry for the global symbols can be found
2546 via elf_sym_hashes (input_bfd).
2548 When generating relocatable output, this function must handle
2549 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2550 going to be the section symbol corresponding to the output
2551 section, which means that the addend must be adjusted
2555 bfinfdpic_relocate_section (bfd
* output_bfd
,
2556 struct bfd_link_info
*info
,
2558 asection
* input_section
,
2559 bfd_byte
* contents
,
2560 Elf_Internal_Rela
* relocs
,
2561 Elf_Internal_Sym
* local_syms
,
2562 asection
** local_sections
)
2564 Elf_Internal_Shdr
*symtab_hdr
;
2565 struct elf_link_hash_entry
**sym_hashes
;
2566 Elf_Internal_Rela
*rel
;
2567 Elf_Internal_Rela
*relend
;
2568 unsigned isec_segment
, got_segment
, plt_segment
,
2570 int silence_segment_error
= !bfd_link_pic (info
);
2572 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
2573 sym_hashes
= elf_sym_hashes (input_bfd
);
2574 relend
= relocs
+ input_section
->reloc_count
;
2576 isec_segment
= _bfinfdpic_osec_to_segment (output_bfd
,
2577 input_section
->output_section
);
2578 if (IS_FDPIC (output_bfd
) && bfinfdpic_got_section (info
))
2579 got_segment
= _bfinfdpic_osec_to_segment (output_bfd
,
2580 bfinfdpic_got_section (info
)
2584 if (IS_FDPIC (output_bfd
) && elf_hash_table (info
)->dynamic_sections_created
)
2585 plt_segment
= _bfinfdpic_osec_to_segment (output_bfd
,
2586 bfinfdpic_plt_section (info
)
2591 for (rel
= relocs
; rel
< relend
; rel
++)
2593 reloc_howto_type
*howto
;
2594 unsigned long r_symndx
;
2595 Elf_Internal_Sym
*sym
;
2597 struct elf_link_hash_entry
*h
;
2599 bfd_reloc_status_type r
;
2600 const char * name
= NULL
;
2603 struct bfinfdpic_relocs_info
*picrel
;
2604 bfd_vma orig_addend
= rel
->r_addend
;
2606 r_type
= ELF32_R_TYPE (rel
->r_info
);
2608 if (r_type
== R_BFIN_GNU_VTINHERIT
2609 || r_type
== R_BFIN_GNU_VTENTRY
)
2612 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2613 howto
= bfin_reloc_type_lookup (input_bfd
, r_type
);
2616 bfd_set_error (bfd_error_bad_value
);
2624 if (r_symndx
< symtab_hdr
->sh_info
)
2626 sym
= local_syms
+ r_symndx
;
2627 osec
= sec
= local_sections
[r_symndx
];
2628 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2630 name
= bfd_elf_string_from_elf_section
2631 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
2632 name
= (name
== NULL
) ? bfd_section_name (input_bfd
, sec
) : name
;
2636 bfd_boolean warned
, ignored
;
2637 bfd_boolean unresolved_reloc
;
2639 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2640 r_symndx
, symtab_hdr
, sym_hashes
,
2642 unresolved_reloc
, warned
, ignored
);
2646 if (sec
!= NULL
&& discarded_section (sec
))
2647 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2648 rel
, 1, relend
, howto
, 0, contents
);
2650 if (bfd_link_relocatable (info
))
2654 && (h
->root
.type
== bfd_link_hash_defined
2655 || h
->root
.type
== bfd_link_hash_defweak
)
2656 && !BFINFDPIC_SYM_LOCAL (info
, h
))
2664 case R_BFIN_PCREL24
:
2665 case R_BFIN_PCREL24_JUMP_L
:
2666 case R_BFIN_BYTE4_DATA
:
2667 if (! IS_FDPIC (output_bfd
))
2671 case R_BFIN_GOT17M4
:
2674 case R_BFIN_FUNCDESC_GOT17M4
:
2675 case R_BFIN_FUNCDESC_GOTHI
:
2676 case R_BFIN_FUNCDESC_GOTLO
:
2677 case R_BFIN_GOTOFF17M4
:
2678 case R_BFIN_GOTOFFHI
:
2679 case R_BFIN_GOTOFFLO
:
2680 case R_BFIN_FUNCDESC_GOTOFF17M4
:
2681 case R_BFIN_FUNCDESC_GOTOFFHI
:
2682 case R_BFIN_FUNCDESC_GOTOFFLO
:
2683 case R_BFIN_FUNCDESC
:
2684 case R_BFIN_FUNCDESC_VALUE
:
2686 picrel
= bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info
2687 (info
), input_bfd
, h
,
2688 orig_addend
, INSERT
);
2690 /* In order to find the entry we created before, we must
2691 use the original addend, not the one that may have been
2692 modified by _bfd_elf_rela_local_sym(). */
2693 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
2694 (info
), input_bfd
, r_symndx
,
2695 orig_addend
, INSERT
);
2699 if (!_bfinfdpic_emit_got_relocs_plt_entries (picrel
, output_bfd
, info
,
2704 /* xgettext:c-format */
2705 (_("%B: relocation at `%A+%#Lx' references symbol `%s' with nonzero addend"),
2706 input_bfd
, input_section
, rel
->r_offset
, name
);
2716 if (h
&& ! BFINFDPIC_SYM_LOCAL (info
, h
)
2717 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2718 rel
->r_offset
) != (bfd_vma
) -1)
2720 info
->callbacks
->warning
2721 (info
, _("relocation references symbol not defined in the module"),
2722 name
, input_bfd
, input_section
, rel
->r_offset
);
2730 case R_BFIN_PCREL24
:
2731 case R_BFIN_PCREL24_JUMP_L
:
2732 check_segment
[0] = isec_segment
;
2733 if (! IS_FDPIC (output_bfd
))
2734 check_segment
[1] = isec_segment
;
2735 else if (picrel
->plt
)
2737 relocation
= bfinfdpic_plt_section (info
)->output_section
->vma
2738 + bfinfdpic_plt_section (info
)->output_offset
2739 + picrel
->plt_entry
;
2740 check_segment
[1] = plt_segment
;
2742 /* We don't want to warn on calls to undefined weak symbols,
2743 as calls to them must be protected by non-NULL tests
2744 anyway, and unprotected calls would invoke undefined
2746 else if (picrel
->symndx
== -1
2747 && picrel
->d
.h
->root
.type
== bfd_link_hash_undefweak
)
2748 check_segment
[1] = check_segment
[0];
2750 check_segment
[1] = sec
2751 ? _bfinfdpic_osec_to_segment (output_bfd
, sec
->output_section
)
2755 case R_BFIN_GOT17M4
:
2758 relocation
= picrel
->got_entry
;
2759 check_segment
[0] = check_segment
[1] = got_segment
;
2762 case R_BFIN_FUNCDESC_GOT17M4
:
2763 case R_BFIN_FUNCDESC_GOTHI
:
2764 case R_BFIN_FUNCDESC_GOTLO
:
2765 relocation
= picrel
->fdgot_entry
;
2766 check_segment
[0] = check_segment
[1] = got_segment
;
2769 case R_BFIN_GOTOFFHI
:
2770 case R_BFIN_GOTOFF17M4
:
2771 case R_BFIN_GOTOFFLO
:
2772 relocation
-= bfinfdpic_got_section (info
)->output_section
->vma
2773 + bfinfdpic_got_section (info
)->output_offset
2774 + bfinfdpic_got_initial_offset (info
);
2775 check_segment
[0] = got_segment
;
2776 check_segment
[1] = sec
2777 ? _bfinfdpic_osec_to_segment (output_bfd
, sec
->output_section
)
2781 case R_BFIN_FUNCDESC_GOTOFF17M4
:
2782 case R_BFIN_FUNCDESC_GOTOFFHI
:
2783 case R_BFIN_FUNCDESC_GOTOFFLO
:
2784 relocation
= picrel
->fd_entry
;
2785 check_segment
[0] = check_segment
[1] = got_segment
;
2788 case R_BFIN_FUNCDESC
:
2791 bfd_vma addend
= rel
->r_addend
;
2793 if (! (h
&& h
->root
.type
== bfd_link_hash_undefweak
2794 && BFINFDPIC_SYM_LOCAL (info
, h
)))
2796 /* If the symbol is dynamic and there may be dynamic
2797 symbol resolution because we are or are linked with a
2798 shared library, emit a FUNCDESC relocation such that
2799 the dynamic linker will allocate the function
2800 descriptor. If the symbol needs a non-local function
2801 descriptor but binds locally (e.g., its visibility is
2802 protected, emit a dynamic relocation decayed to
2804 if (h
&& ! BFINFDPIC_FUNCDESC_LOCAL (info
, h
)
2805 && BFINFDPIC_SYM_LOCAL (info
, h
)
2806 && !bfd_link_pde (info
))
2808 dynindx
= elf_section_data (h
->root
.u
.def
.section
2809 ->output_section
)->dynindx
;
2810 addend
+= h
->root
.u
.def
.section
->output_offset
2811 + h
->root
.u
.def
.value
;
2813 else if (h
&& ! BFINFDPIC_FUNCDESC_LOCAL (info
, h
))
2817 info
->callbacks
->warning
2818 (info
, _("R_BFIN_FUNCDESC references dynamic symbol with nonzero addend"),
2819 name
, input_bfd
, input_section
, rel
->r_offset
);
2822 dynindx
= h
->dynindx
;
2826 /* Otherwise, we know we have a private function
2827 descriptor, so reference it directly. */
2828 BFD_ASSERT (picrel
->privfd
);
2829 r_type
= R_BFIN_BYTE4_DATA
;
2830 dynindx
= elf_section_data (bfinfdpic_got_section (info
)
2831 ->output_section
)->dynindx
;
2832 addend
= bfinfdpic_got_section (info
)->output_offset
2833 + bfinfdpic_got_initial_offset (info
)
2837 /* If there is room for dynamic symbol resolution, emit
2838 the dynamic relocation. However, if we're linking an
2839 executable at a fixed location, we won't have emitted a
2840 dynamic symbol entry for the got section, so idx will
2841 be zero, which means we can and should compute the
2842 address of the private descriptor ourselves. */
2843 if (bfd_link_pde (info
)
2844 && (!h
|| BFINFDPIC_FUNCDESC_LOCAL (info
, h
)))
2848 addend
+= bfinfdpic_got_section (info
)->output_section
->vma
;
2849 if ((bfd_get_section_flags (output_bfd
,
2850 input_section
->output_section
)
2851 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
2853 if (_bfinfdpic_osec_readonly_p (output_bfd
,
2857 info
->callbacks
->warning
2859 _("cannot emit fixups in read-only section"),
2860 name
, input_bfd
, input_section
, rel
->r_offset
);
2864 offset
= _bfd_elf_section_offset
2866 input_section
, rel
->r_offset
);
2868 if (offset
!= (bfd_vma
)-1)
2869 _bfinfdpic_add_rofixup (output_bfd
,
2870 bfinfdpic_gotfixup_section
2872 offset
+ input_section
2873 ->output_section
->vma
2874 + input_section
->output_offset
,
2878 else if ((bfd_get_section_flags (output_bfd
,
2879 input_section
->output_section
)
2880 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
2884 if (_bfinfdpic_osec_readonly_p (output_bfd
,
2888 info
->callbacks
->warning
2890 _("cannot emit dynamic relocations in read-only section"),
2891 name
, input_bfd
, input_section
, rel
->r_offset
);
2894 offset
= _bfd_elf_section_offset (output_bfd
, info
,
2895 input_section
, rel
->r_offset
);
2897 if (offset
!= (bfd_vma
)-1)
2898 _bfinfdpic_add_dyn_reloc (output_bfd
,
2899 bfinfdpic_gotrel_section (info
),
2900 offset
+ input_section
2901 ->output_section
->vma
2902 + input_section
->output_offset
,
2904 dynindx
, addend
, picrel
);
2907 addend
+= bfinfdpic_got_section (info
)->output_section
->vma
;
2910 /* We want the addend in-place because dynamic
2911 relocations are REL. Setting relocation to it should
2912 arrange for it to be installed. */
2913 relocation
= addend
- rel
->r_addend
;
2915 check_segment
[0] = check_segment
[1] = got_segment
;
2918 case R_BFIN_BYTE4_DATA
:
2919 if (! IS_FDPIC (output_bfd
))
2921 check_segment
[0] = check_segment
[1] = -1;
2925 case R_BFIN_FUNCDESC_VALUE
:
2928 bfd_vma addend
= rel
->r_addend
;
2930 offset
= _bfd_elf_section_offset (output_bfd
, info
,
2931 input_section
, rel
->r_offset
);
2933 /* If the symbol is dynamic but binds locally, use
2935 if (h
&& ! BFINFDPIC_SYM_LOCAL (info
, h
))
2937 if (addend
&& r_type
== R_BFIN_FUNCDESC_VALUE
)
2939 info
->callbacks
->warning
2940 (info
, _("R_BFIN_FUNCDESC_VALUE references dynamic symbol with nonzero addend"),
2941 name
, input_bfd
, input_section
, rel
->r_offset
);
2944 dynindx
= h
->dynindx
;
2949 addend
+= h
->root
.u
.def
.value
;
2951 addend
+= sym
->st_value
;
2953 addend
+= osec
->output_offset
;
2954 if (osec
&& osec
->output_section
2955 && ! bfd_is_abs_section (osec
->output_section
)
2956 && ! bfd_is_und_section (osec
->output_section
))
2957 dynindx
= elf_section_data (osec
->output_section
)->dynindx
;
2962 /* If we're linking an executable at a fixed address, we
2963 can omit the dynamic relocation as long as the symbol
2964 is defined in the current link unit (which is implied
2965 by its output section not being NULL). */
2966 if (bfd_link_pde (info
)
2967 && (!h
|| BFINFDPIC_SYM_LOCAL (info
, h
)))
2970 addend
+= osec
->output_section
->vma
;
2971 if (IS_FDPIC (input_bfd
)
2972 && (bfd_get_section_flags (output_bfd
,
2973 input_section
->output_section
)
2974 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
2976 if (_bfinfdpic_osec_readonly_p (output_bfd
,
2980 info
->callbacks
->warning
2982 _("cannot emit fixups in read-only section"),
2983 name
, input_bfd
, input_section
, rel
->r_offset
);
2986 if (!h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
2988 if (offset
!= (bfd_vma
)-1)
2990 _bfinfdpic_add_rofixup (output_bfd
,
2991 bfinfdpic_gotfixup_section
2993 offset
+ input_section
2994 ->output_section
->vma
2995 + input_section
->output_offset
,
2998 if (r_type
== R_BFIN_FUNCDESC_VALUE
)
2999 _bfinfdpic_add_rofixup
3001 bfinfdpic_gotfixup_section (info
),
3002 offset
+ input_section
->output_section
->vma
3003 + input_section
->output_offset
+ 4, picrel
);
3010 if ((bfd_get_section_flags (output_bfd
,
3011 input_section
->output_section
)
3012 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
3014 if (_bfinfdpic_osec_readonly_p (output_bfd
,
3018 info
->callbacks
->warning
3020 _("cannot emit dynamic relocations in read-only section"),
3021 name
, input_bfd
, input_section
, rel
->r_offset
);
3025 if (offset
!= (bfd_vma
)-1)
3026 _bfinfdpic_add_dyn_reloc (output_bfd
,
3027 bfinfdpic_gotrel_section (info
),
3029 + input_section
->output_section
->vma
3030 + input_section
->output_offset
,
3031 r_type
, dynindx
, addend
, picrel
);
3034 addend
+= osec
->output_section
->vma
;
3035 /* We want the addend in-place because dynamic
3036 relocations are REL. Setting relocation to it
3037 should arrange for it to be installed. */
3038 relocation
= addend
- rel
->r_addend
;
3041 if (r_type
== R_BFIN_FUNCDESC_VALUE
)
3043 /* If we've omitted the dynamic relocation, just emit
3044 the fixed addresses of the symbol and of the local
3046 if (bfd_link_pde (info
)
3047 && (!h
|| BFINFDPIC_SYM_LOCAL (info
, h
)))
3048 bfd_put_32 (output_bfd
,
3049 bfinfdpic_got_section (info
)->output_section
->vma
3050 + bfinfdpic_got_section (info
)->output_offset
3051 + bfinfdpic_got_initial_offset (info
),
3052 contents
+ rel
->r_offset
+ 4);
3054 /* A function descriptor used for lazy or local
3055 resolving is initialized such that its high word
3056 contains the output section index in which the
3057 PLT entries are located, and the low word
3058 contains the offset of the lazy PLT entry entry
3059 point into that section. */
3060 bfd_put_32 (output_bfd
,
3061 h
&& ! BFINFDPIC_SYM_LOCAL (info
, h
)
3063 : _bfinfdpic_osec_to_segment (output_bfd
,
3066 contents
+ rel
->r_offset
+ 4);
3069 check_segment
[0] = check_segment
[1] = got_segment
;
3073 check_segment
[0] = isec_segment
;
3074 check_segment
[1] = sec
3075 ? _bfinfdpic_osec_to_segment (output_bfd
, sec
->output_section
)
3080 if (check_segment
[0] != check_segment
[1] && IS_FDPIC (output_bfd
))
3082 #if 1 /* If you take this out, remove the #error from fdpic-static-6.d
3083 in the ld testsuite. */
3084 /* This helps catch problems in GCC while we can't do more
3085 than static linking. The idea is to test whether the
3086 input file basename is crt0.o only once. */
3087 if (silence_segment_error
== 1)
3088 silence_segment_error
=
3089 (strlen (input_bfd
->filename
) == 6
3090 && filename_cmp (input_bfd
->filename
, "crt0.o") == 0)
3091 || (strlen (input_bfd
->filename
) > 6
3092 && filename_cmp (input_bfd
->filename
3093 + strlen (input_bfd
->filename
) - 7,
3097 if (!silence_segment_error
3098 /* We don't want duplicate errors for undefined
3100 && !(picrel
&& picrel
->symndx
== -1
3101 && picrel
->d
.h
->root
.type
== bfd_link_hash_undefined
))
3102 info
->callbacks
->warning
3105 ? _("relocations between different segments are not supported")
3106 : _("warning: relocation references a different segment"),
3107 name
, input_bfd
, input_section
, rel
->r_offset
);
3108 if (!silence_segment_error
&& bfd_link_pic (info
))
3110 elf_elfheader (output_bfd
)->e_flags
|= EF_BFIN_PIC
;
3115 case R_BFIN_GOTOFFHI
:
3116 /* We need the addend to be applied before we shift the
3118 relocation
+= rel
->r_addend
;
3121 case R_BFIN_FUNCDESC_GOTHI
:
3122 case R_BFIN_FUNCDESC_GOTOFFHI
:
3127 case R_BFIN_FUNCDESC_GOTLO
:
3128 case R_BFIN_GOTOFFLO
:
3129 case R_BFIN_FUNCDESC_GOTOFFLO
:
3130 relocation
&= 0xffff;
3139 case R_BFIN_PCREL24
:
3140 case R_BFIN_PCREL24_JUMP_L
:
3141 if (! IS_FDPIC (output_bfd
) || ! picrel
->plt
)
3145 /* When referencing a GOT entry, a function descriptor or a
3146 PLT, we don't want the addend to apply to the reference,
3147 but rather to the referenced symbol. The actual entry
3148 will have already been created taking the addend into
3149 account, so cancel it out here. */
3150 case R_BFIN_GOT17M4
:
3153 case R_BFIN_FUNCDESC_GOT17M4
:
3154 case R_BFIN_FUNCDESC_GOTHI
:
3155 case R_BFIN_FUNCDESC_GOTLO
:
3156 case R_BFIN_FUNCDESC_GOTOFF17M4
:
3157 case R_BFIN_FUNCDESC_GOTOFFHI
:
3158 case R_BFIN_FUNCDESC_GOTOFFLO
:
3159 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF17M4
3160 here, since we do want to apply the addend to the others.
3161 Note that we've applied the addend to GOTOFFHI before we
3162 shifted it right. */
3163 case R_BFIN_GOTOFFHI
:
3164 relocation
-= rel
->r_addend
;
3171 r
= bfin_final_link_relocate (rel
, howto
, input_bfd
, input_section
,
3172 contents
, rel
->r_offset
,
3173 relocation
, rel
->r_addend
);
3175 if (r
!= bfd_reloc_ok
)
3177 const char * msg
= (const char *) NULL
;
3181 case bfd_reloc_overflow
:
3182 (*info
->callbacks
->reloc_overflow
)
3183 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3184 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
3187 case bfd_reloc_undefined
:
3188 (*info
->callbacks
->undefined_symbol
)
3189 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
3192 case bfd_reloc_outofrange
:
3193 msg
= _("internal error: out of range error");
3196 case bfd_reloc_notsupported
:
3197 msg
= _("internal error: unsupported relocation error");
3200 case bfd_reloc_dangerous
:
3201 msg
= _("internal error: dangerous relocation");
3205 msg
= _("internal error: unknown error");
3210 (*info
->callbacks
->warning
) (info
, msg
, name
, input_bfd
,
3211 input_section
, rel
->r_offset
);
3218 /* Update the relocation information for the relocations of the section
3222 bfinfdpic_gc_sweep_hook (bfd
*abfd
,
3223 struct bfd_link_info
*info
,
3225 const Elf_Internal_Rela
*relocs
)
3227 Elf_Internal_Shdr
*symtab_hdr
;
3228 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
3229 const Elf_Internal_Rela
*rel
;
3230 const Elf_Internal_Rela
*rel_end
;
3231 struct bfinfdpic_relocs_info
*picrel
;
3233 BFD_ASSERT (IS_FDPIC (abfd
));
3235 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3236 sym_hashes
= elf_sym_hashes (abfd
);
3237 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/sizeof(Elf32_External_Sym
);
3238 if (!elf_bad_symtab (abfd
))
3239 sym_hashes_end
-= symtab_hdr
->sh_info
;
3241 rel_end
= relocs
+ sec
->reloc_count
;
3242 for (rel
= relocs
; rel
< rel_end
; rel
++)
3244 struct elf_link_hash_entry
*h
;
3245 unsigned long r_symndx
;
3247 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3248 if (r_symndx
< symtab_hdr
->sh_info
)
3251 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3254 picrel
= bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info
),
3256 rel
->r_addend
, NO_INSERT
);
3258 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
3259 (info
), abfd
, r_symndx
,
3260 rel
->r_addend
, NO_INSERT
);
3265 switch (ELF32_R_TYPE (rel
->r_info
))
3267 case R_BFIN_PCREL24
:
3268 case R_BFIN_PCREL24_JUMP_L
:
3272 case R_BFIN_FUNCDESC_VALUE
:
3273 picrel
->relocsfdv
--;
3274 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
3278 case R_BFIN_BYTE4_DATA
:
3280 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
3284 case R_BFIN_GOT17M4
:
3293 case R_BFIN_FUNCDESC_GOT17M4
:
3294 picrel
->fdgot17m4
--;
3297 case R_BFIN_FUNCDESC_GOTHI
:
3298 case R_BFIN_FUNCDESC_GOTLO
:
3299 picrel
->fdgothilo
--;
3302 case R_BFIN_GOTOFF17M4
:
3303 case R_BFIN_GOTOFFHI
:
3304 case R_BFIN_GOTOFFLO
:
3308 case R_BFIN_FUNCDESC_GOTOFF17M4
:
3309 picrel
->fdgoff17m4
--;
3312 case R_BFIN_FUNCDESC_GOTOFFHI
:
3313 case R_BFIN_FUNCDESC_GOTOFFLO
:
3314 picrel
->fdgoffhilo
--;
3317 case R_BFIN_FUNCDESC
:
3330 /* We need dynamic symbols for every section, since segments can
3331 relocate independently. */
3333 _bfinfdpic_link_omit_section_dynsym (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3334 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3337 switch (elf_section_data (p
)->this_hdr
.sh_type
)
3341 /* If sh_type is yet undecided, assume it could be
3342 SHT_PROGBITS/SHT_NOBITS. */
3346 /* There shouldn't be section relative relocations
3347 against any other section. */
3353 /* Create a .got section, as well as its additional info field. This
3354 is almost entirely copied from
3355 elflink.c:_bfd_elf_create_got_section(). */
3358 _bfin_create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
3360 flagword flags
, pltflags
;
3362 struct elf_link_hash_entry
*h
;
3363 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3366 /* This function may be called more than once. */
3367 s
= elf_hash_table (info
)->sgot
;
3371 /* Machine specific: although pointers are 32-bits wide, we want the
3372 GOT to be aligned to a 64-bit boundary, such that function
3373 descriptors in it can be accessed with 64-bit loads and
3377 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3378 | SEC_LINKER_CREATED
);
3381 s
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
3382 elf_hash_table (info
)->sgot
= s
;
3384 || !bfd_set_section_alignment (abfd
, s
, ptralign
))
3387 if (bed
->want_got_sym
)
3389 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
3390 (or .got.plt) section. We don't do this in the linker script
3391 because we don't want to define the symbol if we are not creating
3392 a global offset table. */
3393 h
= _bfd_elf_define_linkage_sym (abfd
, info
, s
, "__GLOBAL_OFFSET_TABLE_");
3394 elf_hash_table (info
)->hgot
= h
;
3398 /* Machine-specific: we want the symbol for executables as
3400 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3404 /* The first bit of the global offset table is the header. */
3405 s
->size
+= bed
->got_header_size
;
3407 /* This is the machine-specific part. Create and initialize section
3408 data for the got. */
3409 if (IS_FDPIC (abfd
))
3411 bfinfdpic_relocs_info (info
) = htab_try_create (1,
3412 bfinfdpic_relocs_info_hash
,
3413 bfinfdpic_relocs_info_eq
,
3415 if (! bfinfdpic_relocs_info (info
))
3418 s
= bfd_make_section_anyway_with_flags (abfd
, ".rel.got",
3419 (flags
| SEC_READONLY
));
3421 || ! bfd_set_section_alignment (abfd
, s
, 2))
3424 bfinfdpic_gotrel_section (info
) = s
;
3426 /* Machine-specific. */
3427 s
= bfd_make_section_anyway_with_flags (abfd
, ".rofixup",
3428 (flags
| SEC_READONLY
));
3430 || ! bfd_set_section_alignment (abfd
, s
, 2))
3433 bfinfdpic_gotfixup_section (info
) = s
;
3436 pltflags
|= SEC_CODE
;
3437 if (bed
->plt_not_loaded
)
3438 pltflags
&= ~ (SEC_CODE
| SEC_LOAD
| SEC_HAS_CONTENTS
);
3439 if (bed
->plt_readonly
)
3440 pltflags
|= SEC_READONLY
;
3442 s
= bfd_make_section_anyway_with_flags (abfd
, ".plt", pltflags
);
3444 || ! bfd_set_section_alignment (abfd
, s
, bed
->plt_alignment
))
3446 /* Blackfin-specific: remember it. */
3447 bfinfdpic_plt_section (info
) = s
;
3449 if (bed
->want_plt_sym
)
3451 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
3453 struct bfd_link_hash_entry
*bh
= NULL
;
3455 if (! (_bfd_generic_link_add_one_symbol
3456 (info
, abfd
, "__PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
, 0, NULL
,
3457 FALSE
, get_elf_backend_data (abfd
)->collect
, &bh
)))
3459 h
= (struct elf_link_hash_entry
*) bh
;
3461 h
->type
= STT_OBJECT
;
3463 if (! bfd_link_executable (info
)
3464 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
3468 /* Blackfin-specific: we want rel relocations for the plt. */
3469 s
= bfd_make_section_anyway_with_flags (abfd
, ".rel.plt",
3470 flags
| SEC_READONLY
);
3472 || ! bfd_set_section_alignment (abfd
, s
, bed
->s
->log_file_align
))
3474 /* Blackfin-specific: remember it. */
3475 bfinfdpic_pltrel_section (info
) = s
;
3480 /* Make sure the got and plt sections exist, and that our pointers in
3481 the link hash table point to them. */
3484 elf32_bfinfdpic_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3486 /* This is mostly copied from
3487 elflink.c:_bfd_elf_create_dynamic_sections(). */
3490 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3492 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3493 | SEC_LINKER_CREATED
);
3495 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
3496 .rel[a].bss sections. */
3498 /* Blackfin-specific: we want to create the GOT in the Blackfin way. */
3499 if (! _bfin_create_got_section (abfd
, info
))
3502 /* Blackfin-specific: make sure we created everything we wanted. */
3503 BFD_ASSERT (bfinfdpic_got_section (info
) && bfinfdpic_gotrel_section (info
)
3504 /* && bfinfdpic_gotfixup_section (info) */
3505 && bfinfdpic_plt_section (info
)
3506 && bfinfdpic_pltrel_section (info
));
3508 if (bed
->want_dynbss
)
3510 /* The .dynbss section is a place to put symbols which are defined
3511 by dynamic objects, are referenced by regular objects, and are
3512 not functions. We must allocate space for them in the process
3513 image and use a R_*_COPY reloc to tell the dynamic linker to
3514 initialize them at run time. The linker script puts the .dynbss
3515 section into the .bss section of the final image. */
3516 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynbss",
3517 SEC_ALLOC
| SEC_LINKER_CREATED
);
3521 /* The .rel[a].bss section holds copy relocs. This section is not
3522 normally needed. We need to create it here, though, so that the
3523 linker will map it to an output section. We can't just create it
3524 only if we need it, because we will not know whether we need it
3525 until we have seen all the input files, and the first time the
3526 main linker code calls BFD after examining all the input files
3527 (size_dynamic_sections) the input sections have already been
3528 mapped to the output sections. If the section turns out not to
3529 be needed, we can discard it later. We will never need this
3530 section when generating a shared object, since they do not use
3532 if (! bfd_link_pic (info
))
3534 s
= bfd_make_section_anyway_with_flags (abfd
,
3536 flags
| SEC_READONLY
);
3538 || ! bfd_set_section_alignment (abfd
, s
, bed
->s
->log_file_align
))
3546 /* Compute the total GOT size required by each symbol in each range.
3547 Symbols may require up to 4 words in the GOT: an entry pointing to
3548 the symbol, an entry pointing to its function descriptor, and a
3549 private function descriptors taking two words. */
3552 _bfinfdpic_count_nontls_entries (struct bfinfdpic_relocs_info
*entry
,
3553 struct _bfinfdpic_dynamic_got_info
*dinfo
)
3555 /* Allocate space for a GOT entry pointing to the symbol. */
3557 dinfo
->got17m4
+= 4;
3558 else if (entry
->gothilo
)
3559 dinfo
->gothilo
+= 4;
3564 /* Allocate space for a GOT entry pointing to the function
3566 if (entry
->fdgot17m4
)
3567 dinfo
->got17m4
+= 4;
3568 else if (entry
->fdgothilo
)
3569 dinfo
->gothilo
+= 4;
3574 /* Decide whether we need a PLT entry, a function descriptor in the
3575 GOT, and a lazy PLT entry for this symbol. */
3576 entry
->plt
= entry
->call
3577 && entry
->symndx
== -1 && ! BFINFDPIC_SYM_LOCAL (dinfo
->info
, entry
->d
.h
)
3578 && elf_hash_table (dinfo
->info
)->dynamic_sections_created
;
3579 entry
->privfd
= entry
->plt
3580 || entry
->fdgoff17m4
|| entry
->fdgoffhilo
3581 || ((entry
->fd
|| entry
->fdgot17m4
|| entry
->fdgothilo
)
3582 && (entry
->symndx
!= -1
3583 || BFINFDPIC_FUNCDESC_LOCAL (dinfo
->info
, entry
->d
.h
)));
3584 entry
->lazyplt
= entry
->privfd
3585 && entry
->symndx
== -1 && ! BFINFDPIC_SYM_LOCAL (dinfo
->info
, entry
->d
.h
)
3586 && ! (dinfo
->info
->flags
& DF_BIND_NOW
)
3587 && elf_hash_table (dinfo
->info
)->dynamic_sections_created
;
3589 /* Allocate space for a function descriptor. */
3590 if (entry
->fdgoff17m4
)
3592 else if (entry
->privfd
&& entry
->plt
)
3594 else if (entry
->privfd
)
3601 dinfo
->lzplt
+= LZPLT_NORMAL_SIZE
;
3604 /* Compute the number of dynamic relocations and fixups that a symbol
3605 requires, and add (or subtract) from the grand and per-symbol
3609 _bfinfdpic_count_relocs_fixups (struct bfinfdpic_relocs_info
*entry
,
3610 struct _bfinfdpic_dynamic_got_info
*dinfo
,
3611 bfd_boolean subtract
)
3613 bfd_vma relocs
= 0, fixups
= 0;
3615 if (!bfd_link_pde (dinfo
->info
))
3616 relocs
= entry
->relocs32
+ entry
->relocsfd
+ entry
->relocsfdv
;
3619 if (entry
->symndx
!= -1 || BFINFDPIC_SYM_LOCAL (dinfo
->info
, entry
->d
.h
))
3621 if (entry
->symndx
!= -1
3622 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
3623 fixups
+= entry
->relocs32
+ 2 * entry
->relocsfdv
;
3626 relocs
+= entry
->relocs32
+ entry
->relocsfdv
;
3628 if (entry
->symndx
!= -1
3629 || BFINFDPIC_FUNCDESC_LOCAL (dinfo
->info
, entry
->d
.h
))
3631 if (entry
->symndx
!= -1
3632 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
3633 fixups
+= entry
->relocsfd
;
3636 relocs
+= entry
->relocsfd
;
3645 entry
->dynrelocs
+= relocs
;
3646 entry
->fixups
+= fixups
;
3647 dinfo
->relocs
+= relocs
;
3648 dinfo
->fixups
+= fixups
;
3651 /* Compute the total GOT and PLT size required by each symbol in each range. *
3652 Symbols may require up to 4 words in the GOT: an entry pointing to
3653 the symbol, an entry pointing to its function descriptor, and a
3654 private function descriptors taking two words. */
3657 _bfinfdpic_count_got_plt_entries (void **entryp
, void *dinfo_
)
3659 struct bfinfdpic_relocs_info
*entry
= *entryp
;
3660 struct _bfinfdpic_dynamic_got_info
*dinfo
= dinfo_
;
3662 _bfinfdpic_count_nontls_entries (entry
, dinfo
);
3664 _bfinfdpic_count_relocs_fixups (entry
, dinfo
, FALSE
);
3669 /* This structure is used to assign offsets to got entries, function
3670 descriptors, plt entries and lazy plt entries. */
3672 struct _bfinfdpic_dynamic_got_plt_info
3674 /* Summary information collected with _bfinfdpic_count_got_plt_entries. */
3675 struct _bfinfdpic_dynamic_got_info g
;
3677 /* For each addressable range, we record a MAX (positive) and MIN
3678 (negative) value. CUR is used to assign got entries, and it's
3679 incremented from an initial positive value to MAX, then from MIN
3680 to FDCUR (unless FDCUR wraps around first). FDCUR is used to
3681 assign function descriptors, and it's decreased from an initial
3682 non-positive value to MIN, then from MAX down to CUR (unless CUR
3683 wraps around first). All of MIN, MAX, CUR and FDCUR always point
3684 to even words. ODD, if non-zero, indicates an odd word to be
3685 used for the next got entry, otherwise CUR is used and
3686 incremented by a pair of words, wrapping around when it reaches
3687 MAX. FDCUR is decremented (and wrapped) before the next function
3688 descriptor is chosen. FDPLT indicates the number of remaining
3689 slots that can be used for function descriptors used only by PLT
3691 struct _bfinfdpic_dynamic_got_alloc_data
3693 bfd_signed_vma max
, cur
, odd
, fdcur
, min
;
3698 /* Determine the positive and negative ranges to be used by each
3699 offset range in the GOT. FDCUR and CUR, that must be aligned to a
3700 double-word boundary, are the minimum (negative) and maximum
3701 (positive) GOT offsets already used by previous ranges, except for
3702 an ODD entry that may have been left behind. GOT and FD indicate
3703 the size of GOT entries and function descriptors that must be
3704 placed within the range from -WRAP to WRAP. If there's room left,
3705 up to FDPLT bytes should be reserved for additional function
3708 inline static bfd_signed_vma
3709 _bfinfdpic_compute_got_alloc_data (struct _bfinfdpic_dynamic_got_alloc_data
*gad
,
3710 bfd_signed_vma fdcur
,
3718 bfd_signed_vma wrapmin
= -wrap
;
3720 /* Start at the given initial points. */
3724 /* If we had an incoming odd word and we have any got entries that
3725 are going to use it, consume it, otherwise leave gad->odd at
3726 zero. We might force gad->odd to zero and return the incoming
3727 odd such that it is used by the next range, but then GOT entries
3728 might appear to be out of order and we wouldn't be able to
3729 shorten the GOT by one word if it turns out to end with an
3730 unpaired GOT entry. */
3740 /* If we're left with an unpaired GOT entry, compute its location
3741 such that we can return it. Otherwise, if got doesn't require an
3742 odd number of words here, either odd was already zero in the
3743 block above, or it was set to zero because got was non-zero, or
3744 got was already zero. In the latter case, we want the value of
3745 odd to carry over to the return statement, so we don't want to
3746 reset odd unless the condition below is true. */
3753 /* Compute the tentative boundaries of this range. */
3754 gad
->max
= cur
+ got
;
3755 gad
->min
= fdcur
- fd
;
3758 /* If function descriptors took too much space, wrap some of them
3760 if (gad
->min
< wrapmin
)
3762 gad
->max
+= wrapmin
- gad
->min
;
3765 /* If there is space left and we have function descriptors
3766 referenced in PLT entries that could take advantage of shorter
3767 offsets, place them here. */
3768 else if (fdplt
&& gad
->min
> wrapmin
)
3771 if ((bfd_vma
) (gad
->min
- wrapmin
) < fdplt
)
3772 fds
= gad
->min
- wrapmin
;
3781 /* If GOT entries took too much space, wrap some of them around.
3782 This may well cause gad->min to become lower than wrapmin. This
3783 will cause a relocation overflow later on, so we don't have to
3785 if ((bfd_vma
) gad
->max
> wrap
)
3787 gad
->min
-= gad
->max
- wrap
;
3790 /* If there is more space left, try to place some more function
3791 descriptors for PLT entries. */
3792 else if (fdplt
&& (bfd_vma
) gad
->max
< wrap
)
3795 if ((bfd_vma
) (wrap
- gad
->max
) < fdplt
)
3796 fds
= wrap
- gad
->max
;
3805 /* If odd was initially computed as an offset past the wrap point,
3808 odd
= gad
->min
+ odd
- gad
->max
;
3810 /* _bfinfdpic_get_got_entry() below will always wrap gad->cur if needed
3811 before returning, so do it here too. This guarantees that,
3812 should cur and fdcur meet at the wrap point, they'll both be
3814 if (gad
->cur
== gad
->max
)
3815 gad
->cur
= gad
->min
;
3820 /* Compute the location of the next GOT entry, given the allocation
3821 data for a range. */
3823 inline static bfd_signed_vma
3824 _bfinfdpic_get_got_entry (struct _bfinfdpic_dynamic_got_alloc_data
*gad
)
3830 /* If there was an odd word left behind, use it. */
3836 /* Otherwise, use the word pointed to by cur, reserve the next
3837 as an odd word, and skip to the next pair of words, possibly
3840 gad
->odd
= gad
->cur
+ 4;
3842 if (gad
->cur
== gad
->max
)
3843 gad
->cur
= gad
->min
;
3849 /* Compute the location of the next function descriptor entry in the
3850 GOT, given the allocation data for a range. */
3852 inline static bfd_signed_vma
3853 _bfinfdpic_get_fd_entry (struct _bfinfdpic_dynamic_got_alloc_data
*gad
)
3855 /* If we're at the bottom, wrap around, and only then allocate the
3856 next pair of words. */
3857 if (gad
->fdcur
== gad
->min
)
3858 gad
->fdcur
= gad
->max
;
3859 return gad
->fdcur
-= 8;
3862 /* Assign GOT offsets for every GOT entry and function descriptor.
3863 Doing everything in a single pass is tricky. */
3866 _bfinfdpic_assign_got_entries (void **entryp
, void *info_
)
3868 struct bfinfdpic_relocs_info
*entry
= *entryp
;
3869 struct _bfinfdpic_dynamic_got_plt_info
*dinfo
= info_
;
3872 entry
->got_entry
= _bfinfdpic_get_got_entry (&dinfo
->got17m4
);
3873 else if (entry
->gothilo
)
3874 entry
->got_entry
= _bfinfdpic_get_got_entry (&dinfo
->gothilo
);
3876 if (entry
->fdgot17m4
)
3877 entry
->fdgot_entry
= _bfinfdpic_get_got_entry (&dinfo
->got17m4
);
3878 else if (entry
->fdgothilo
)
3879 entry
->fdgot_entry
= _bfinfdpic_get_got_entry (&dinfo
->gothilo
);
3881 if (entry
->fdgoff17m4
)
3882 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->got17m4
);
3883 else if (entry
->plt
&& dinfo
->got17m4
.fdplt
)
3885 dinfo
->got17m4
.fdplt
-= 8;
3886 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->got17m4
);
3888 else if (entry
->plt
)
3890 dinfo
->gothilo
.fdplt
-= 8;
3891 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->gothilo
);
3893 else if (entry
->privfd
)
3894 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->gothilo
);
3899 /* Assign GOT offsets to private function descriptors used by PLT
3900 entries (or referenced by 32-bit offsets), as well as PLT entries
3901 and lazy PLT entries. */
3904 _bfinfdpic_assign_plt_entries (void **entryp
, void *info_
)
3906 struct bfinfdpic_relocs_info
*entry
= *entryp
;
3907 struct _bfinfdpic_dynamic_got_plt_info
*dinfo
= info_
;
3909 /* If this symbol requires a local function descriptor, allocate
3911 if (entry
->privfd
&& entry
->fd_entry
== 0)
3913 if (dinfo
->got17m4
.fdplt
)
3915 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->got17m4
);
3916 dinfo
->got17m4
.fdplt
-= 8;
3920 BFD_ASSERT (dinfo
->gothilo
.fdplt
);
3921 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->gothilo
);
3922 dinfo
->gothilo
.fdplt
-= 8;
3930 /* We use the section's raw size to mark the location of the
3932 entry
->plt_entry
= bfinfdpic_plt_section (dinfo
->g
.info
)->size
;
3934 /* Figure out the length of this PLT entry based on the
3935 addressing mode we need to reach the function descriptor. */
3936 BFD_ASSERT (entry
->fd_entry
);
3937 if (entry
->fd_entry
>= -(1 << (18 - 1))
3938 && entry
->fd_entry
+ 4 < (1 << (18 - 1)))
3943 bfinfdpic_plt_section (dinfo
->g
.info
)->size
+= size
;
3948 entry
->lzplt_entry
= dinfo
->g
.lzplt
;
3949 dinfo
->g
.lzplt
+= LZPLT_NORMAL_SIZE
;
3950 /* If this entry is the one that gets the resolver stub, account
3951 for the additional instruction. */
3952 if (entry
->lzplt_entry
% BFINFDPIC_LZPLT_BLOCK_SIZE
3953 == BFINFDPIC_LZPLT_RESOLV_LOC
)
3954 dinfo
->g
.lzplt
+= LZPLT_RESOLVER_EXTRA
;
3960 /* Cancel out any effects of calling _bfinfdpic_assign_got_entries and
3961 _bfinfdpic_assign_plt_entries. */
3964 _bfinfdpic_reset_got_plt_entries (void **entryp
, void *ignore ATTRIBUTE_UNUSED
)
3966 struct bfinfdpic_relocs_info
*entry
= *entryp
;
3968 entry
->got_entry
= 0;
3969 entry
->fdgot_entry
= 0;
3970 entry
->fd_entry
= 0;
3971 entry
->plt_entry
= (bfd_vma
)-1;
3972 entry
->lzplt_entry
= (bfd_vma
)-1;
3977 /* Follow indirect and warning hash entries so that each got entry
3978 points to the final symbol definition. P must point to a pointer
3979 to the hash table we're traversing. Since this traversal may
3980 modify the hash table, we set this pointer to NULL to indicate
3981 we've made a potentially-destructive change to the hash table, so
3982 the traversal must be restarted. */
3984 _bfinfdpic_resolve_final_relocs_info (void **entryp
, void *p
)
3986 struct bfinfdpic_relocs_info
*entry
= *entryp
;
3989 if (entry
->symndx
== -1)
3991 struct elf_link_hash_entry
*h
= entry
->d
.h
;
3992 struct bfinfdpic_relocs_info
*oentry
;
3994 while (h
->root
.type
== bfd_link_hash_indirect
3995 || h
->root
.type
== bfd_link_hash_warning
)
3996 h
= (struct elf_link_hash_entry
*)h
->root
.u
.i
.link
;
3998 if (entry
->d
.h
== h
)
4001 oentry
= bfinfdpic_relocs_info_for_global (*htab
, 0, h
, entry
->addend
,
4006 /* Merge the two entries. */
4007 bfinfdpic_pic_merge_early_relocs_info (oentry
, entry
);
4008 htab_clear_slot (*htab
, entryp
);
4014 /* If we can't find this entry with the new bfd hash, re-insert
4015 it, and get the traversal restarted. */
4016 if (! htab_find (*htab
, entry
))
4018 htab_clear_slot (*htab
, entryp
);
4019 entryp
= htab_find_slot (*htab
, entry
, INSERT
);
4022 /* Abort the traversal, since the whole table may have
4023 moved, and leave it up to the parent to restart the
4025 *(htab_t
*)p
= NULL
;
4033 /* Compute the total size of the GOT, the PLT, the dynamic relocations
4034 section and the rofixup section. Assign locations for GOT and PLT
4038 _bfinfdpic_size_got_plt (bfd
*output_bfd
,
4039 struct _bfinfdpic_dynamic_got_plt_info
*gpinfop
)
4043 struct bfd_link_info
*info
= gpinfop
->g
.info
;
4044 bfd
*dynobj
= elf_hash_table (info
)->dynobj
;
4046 memcpy (bfinfdpic_dynamic_got_plt_info (info
), &gpinfop
->g
,
4047 sizeof (gpinfop
->g
));
4050 /* Compute the total size taken by entries in the 18-bit range,
4051 to tell how many PLT function descriptors we can bring into it
4052 without causing it to overflow. */
4053 limit
= odd
+ gpinfop
->g
.got17m4
+ gpinfop
->g
.fd17m4
;
4054 if (limit
< (bfd_vma
)1 << 18)
4055 limit
= ((bfd_vma
)1 << 18) - limit
;
4058 if (gpinfop
->g
.fdplt
< limit
)
4059 limit
= gpinfop
->g
.fdplt
;
4061 /* Determine the ranges of GOT offsets that we can use for each
4062 range of addressing modes. */
4063 odd
= _bfinfdpic_compute_got_alloc_data (&gpinfop
->got17m4
,
4070 (bfd_vma
)1 << (18-1));
4071 odd
= _bfinfdpic_compute_got_alloc_data (&gpinfop
->gothilo
,
4072 gpinfop
->got17m4
.min
,
4074 gpinfop
->got17m4
.max
,
4077 gpinfop
->g
.fdplt
- gpinfop
->got17m4
.fdplt
,
4078 (bfd_vma
)1 << (32-1));
4080 /* Now assign (most) GOT offsets. */
4081 htab_traverse (bfinfdpic_relocs_info (info
), _bfinfdpic_assign_got_entries
,
4084 bfinfdpic_got_section (info
)->size
= gpinfop
->gothilo
.max
4085 - gpinfop
->gothilo
.min
4086 /* If an odd word is the last word of the GOT, we don't need this
4087 word to be part of the GOT. */
4088 - (odd
+ 4 == gpinfop
->gothilo
.max
? 4 : 0);
4089 if (bfinfdpic_got_section (info
)->size
== 0)
4090 bfinfdpic_got_section (info
)->flags
|= SEC_EXCLUDE
;
4091 else if (bfinfdpic_got_section (info
)->size
== 12
4092 && ! elf_hash_table (info
)->dynamic_sections_created
)
4094 bfinfdpic_got_section (info
)->flags
|= SEC_EXCLUDE
;
4095 bfinfdpic_got_section (info
)->size
= 0;
4099 bfinfdpic_got_section (info
)->contents
=
4100 (bfd_byte
*) bfd_zalloc (dynobj
,
4101 bfinfdpic_got_section (info
)->size
);
4102 if (bfinfdpic_got_section (info
)->contents
== NULL
)
4106 if (elf_hash_table (info
)->dynamic_sections_created
)
4107 /* Subtract the number of lzplt entries, since those will generate
4108 relocations in the pltrel section. */
4109 bfinfdpic_gotrel_section (info
)->size
=
4110 (gpinfop
->g
.relocs
- gpinfop
->g
.lzplt
/ LZPLT_NORMAL_SIZE
)
4111 * get_elf_backend_data (output_bfd
)->s
->sizeof_rel
;
4113 BFD_ASSERT (gpinfop
->g
.relocs
== 0);
4114 if (bfinfdpic_gotrel_section (info
)->size
== 0)
4115 bfinfdpic_gotrel_section (info
)->flags
|= SEC_EXCLUDE
;
4118 bfinfdpic_gotrel_section (info
)->contents
=
4119 (bfd_byte
*) bfd_zalloc (dynobj
,
4120 bfinfdpic_gotrel_section (info
)->size
);
4121 if (bfinfdpic_gotrel_section (info
)->contents
== NULL
)
4125 bfinfdpic_gotfixup_section (info
)->size
= (gpinfop
->g
.fixups
+ 1) * 4;
4126 if (bfinfdpic_gotfixup_section (info
)->size
== 0)
4127 bfinfdpic_gotfixup_section (info
)->flags
|= SEC_EXCLUDE
;
4130 bfinfdpic_gotfixup_section (info
)->contents
=
4131 (bfd_byte
*) bfd_zalloc (dynobj
,
4132 bfinfdpic_gotfixup_section (info
)->size
);
4133 if (bfinfdpic_gotfixup_section (info
)->contents
== NULL
)
4137 if (elf_hash_table (info
)->dynamic_sections_created
)
4138 bfinfdpic_pltrel_section (info
)->size
=
4139 gpinfop
->g
.lzplt
/ LZPLT_NORMAL_SIZE
* get_elf_backend_data (output_bfd
)->s
->sizeof_rel
;
4140 if (bfinfdpic_pltrel_section (info
)->size
== 0)
4141 bfinfdpic_pltrel_section (info
)->flags
|= SEC_EXCLUDE
;
4144 bfinfdpic_pltrel_section (info
)->contents
=
4145 (bfd_byte
*) bfd_zalloc (dynobj
,
4146 bfinfdpic_pltrel_section (info
)->size
);
4147 if (bfinfdpic_pltrel_section (info
)->contents
== NULL
)
4151 /* Add 4 bytes for every block of at most 65535 lazy PLT entries,
4152 such that there's room for the additional instruction needed to
4153 call the resolver. Since _bfinfdpic_assign_got_entries didn't
4154 account for them, our block size is 4 bytes smaller than the real
4156 if (elf_hash_table (info
)->dynamic_sections_created
)
4158 bfinfdpic_plt_section (info
)->size
= gpinfop
->g
.lzplt
4159 + ((gpinfop
->g
.lzplt
+ (BFINFDPIC_LZPLT_BLOCK_SIZE
- 4) - LZPLT_NORMAL_SIZE
)
4160 / (BFINFDPIC_LZPLT_BLOCK_SIZE
- 4) * LZPLT_RESOLVER_EXTRA
);
4163 /* Reset it, such that _bfinfdpic_assign_plt_entries() can use it to
4164 actually assign lazy PLT entries addresses. */
4165 gpinfop
->g
.lzplt
= 0;
4167 /* Save information that we're going to need to generate GOT and PLT
4169 bfinfdpic_got_initial_offset (info
) = -gpinfop
->gothilo
.min
;
4171 if (get_elf_backend_data (output_bfd
)->want_got_sym
)
4172 elf_hash_table (info
)->hgot
->root
.u
.def
.value
4173 = bfinfdpic_got_initial_offset (info
);
4175 if (elf_hash_table (info
)->dynamic_sections_created
)
4176 bfinfdpic_plt_initial_offset (info
) =
4177 bfinfdpic_plt_section (info
)->size
;
4179 htab_traverse (bfinfdpic_relocs_info (info
), _bfinfdpic_assign_plt_entries
,
4182 /* Allocate the PLT section contents only after
4183 _bfinfdpic_assign_plt_entries has a chance to add the size of the
4184 non-lazy PLT entries. */
4185 if (bfinfdpic_plt_section (info
)->size
== 0)
4186 bfinfdpic_plt_section (info
)->flags
|= SEC_EXCLUDE
;
4189 bfinfdpic_plt_section (info
)->contents
=
4190 (bfd_byte
*) bfd_zalloc (dynobj
,
4191 bfinfdpic_plt_section (info
)->size
);
4192 if (bfinfdpic_plt_section (info
)->contents
== NULL
)
4199 /* Set the sizes of the dynamic sections. */
4202 elf32_bfinfdpic_size_dynamic_sections (bfd
*output_bfd
,
4203 struct bfd_link_info
*info
)
4205 struct elf_link_hash_table
*htab
;
4208 struct _bfinfdpic_dynamic_got_plt_info gpinfo
;
4210 htab
= elf_hash_table (info
);
4211 dynobj
= htab
->dynobj
;
4212 BFD_ASSERT (dynobj
!= NULL
);
4214 if (htab
->dynamic_sections_created
)
4216 /* Set the contents of the .interp section to the interpreter. */
4217 if (bfd_link_executable (info
) && !info
->nointerp
)
4219 s
= bfd_get_linker_section (dynobj
, ".interp");
4220 BFD_ASSERT (s
!= NULL
);
4221 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
4222 s
->contents
= (bfd_byte
*) ELF_DYNAMIC_INTERPRETER
;
4226 memset (&gpinfo
, 0, sizeof (gpinfo
));
4227 gpinfo
.g
.info
= info
;
4231 htab_t relocs
= bfinfdpic_relocs_info (info
);
4233 htab_traverse (relocs
, _bfinfdpic_resolve_final_relocs_info
, &relocs
);
4235 if (relocs
== bfinfdpic_relocs_info (info
))
4239 htab_traverse (bfinfdpic_relocs_info (info
), _bfinfdpic_count_got_plt_entries
,
4242 /* Allocate space to save the summary information, we're going to
4243 use it if we're doing relaxations. */
4244 bfinfdpic_dynamic_got_plt_info (info
) = bfd_alloc (dynobj
, sizeof (gpinfo
.g
));
4246 if (!_bfinfdpic_size_got_plt (output_bfd
, &gpinfo
))
4249 if (elf_hash_table (info
)->dynamic_sections_created
)
4251 if (bfinfdpic_got_section (info
)->size
)
4252 if (!_bfd_elf_add_dynamic_entry (info
, DT_PLTGOT
, 0))
4255 if (bfinfdpic_pltrel_section (info
)->size
)
4256 if (!_bfd_elf_add_dynamic_entry (info
, DT_PLTRELSZ
, 0)
4257 || !_bfd_elf_add_dynamic_entry (info
, DT_PLTREL
, DT_REL
)
4258 || !_bfd_elf_add_dynamic_entry (info
, DT_JMPREL
, 0))
4261 if (bfinfdpic_gotrel_section (info
)->size
)
4262 if (!_bfd_elf_add_dynamic_entry (info
, DT_REL
, 0)
4263 || !_bfd_elf_add_dynamic_entry (info
, DT_RELSZ
, 0)
4264 || !_bfd_elf_add_dynamic_entry (info
, DT_RELENT
,
4265 sizeof (Elf32_External_Rel
)))
4269 s
= bfd_get_linker_section (dynobj
, ".dynbss");
4270 if (s
&& s
->size
== 0)
4271 s
->flags
|= SEC_EXCLUDE
;
4273 s
= bfd_get_linker_section (dynobj
, ".rela.bss");
4274 if (s
&& s
->size
== 0)
4275 s
->flags
|= SEC_EXCLUDE
;
4281 elf32_bfinfdpic_always_size_sections (bfd
*output_bfd
,
4282 struct bfd_link_info
*info
)
4284 if (!bfd_link_relocatable (info
)
4285 && !bfd_elf_stack_segment_size (output_bfd
, info
,
4286 "__stacksize", DEFAULT_STACK_SIZE
))
4292 /* Check whether any of the relocations was optimized away, and
4293 subtract it from the relocation or fixup count. */
4295 _bfinfdpic_check_discarded_relocs (bfd
*abfd
, asection
*sec
,
4296 struct bfd_link_info
*info
,
4297 bfd_boolean
*changed
)
4299 Elf_Internal_Shdr
*symtab_hdr
;
4300 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4301 Elf_Internal_Rela
*rel
, *erel
;
4303 if ((sec
->flags
& SEC_RELOC
) == 0
4304 || sec
->reloc_count
== 0)
4307 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4308 sym_hashes
= elf_sym_hashes (abfd
);
4309 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/sizeof(Elf32_External_Sym
);
4310 if (!elf_bad_symtab (abfd
))
4311 sym_hashes_end
-= symtab_hdr
->sh_info
;
4313 rel
= elf_section_data (sec
)->relocs
;
4315 /* Now examine each relocation. */
4316 for (erel
= rel
+ sec
->reloc_count
; rel
< erel
; rel
++)
4318 struct elf_link_hash_entry
*h
;
4319 unsigned long r_symndx
;
4320 struct bfinfdpic_relocs_info
*picrel
;
4321 struct _bfinfdpic_dynamic_got_info
*dinfo
;
4323 if (ELF32_R_TYPE (rel
->r_info
) != R_BFIN_BYTE4_DATA
4324 && ELF32_R_TYPE (rel
->r_info
) != R_BFIN_FUNCDESC
)
4327 if (_bfd_elf_section_offset (sec
->output_section
->owner
,
4328 info
, sec
, rel
->r_offset
)
4332 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4333 if (r_symndx
< symtab_hdr
->sh_info
)
4337 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4338 while (h
->root
.type
== bfd_link_hash_indirect
4339 || h
->root
.type
== bfd_link_hash_warning
)
4340 h
= (struct elf_link_hash_entry
*)h
->root
.u
.i
.link
;
4344 picrel
= bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info
),
4346 rel
->r_addend
, NO_INSERT
);
4348 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info (info
),
4350 rel
->r_addend
, NO_INSERT
);
4356 dinfo
= bfinfdpic_dynamic_got_plt_info (info
);
4358 _bfinfdpic_count_relocs_fixups (picrel
, dinfo
, TRUE
);
4359 if (ELF32_R_TYPE (rel
->r_info
) == R_BFIN_BYTE4_DATA
)
4361 else /* we know (ELF32_R_TYPE (rel->r_info) == R_BFIN_FUNCDESC) */
4363 _bfinfdpic_count_relocs_fixups (picrel
, dinfo
, FALSE
);
4370 bfinfdpic_elf_discard_info (bfd
*ibfd
,
4371 struct elf_reloc_cookie
*cookie ATTRIBUTE_UNUSED
,
4372 struct bfd_link_info
*info
)
4374 bfd_boolean changed
= FALSE
;
4378 /* Account for relaxation of .eh_frame section. */
4379 for (s
= ibfd
->sections
; s
; s
= s
->next
)
4380 if (s
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
)
4382 if (!_bfinfdpic_check_discarded_relocs (ibfd
, s
, info
, &changed
))
4384 obfd
= s
->output_section
->owner
;
4389 struct _bfinfdpic_dynamic_got_plt_info gpinfo
;
4391 memset (&gpinfo
, 0, sizeof (gpinfo
));
4392 memcpy (&gpinfo
.g
, bfinfdpic_dynamic_got_plt_info (info
),
4395 /* Clear GOT and PLT assignments. */
4396 htab_traverse (bfinfdpic_relocs_info (info
),
4397 _bfinfdpic_reset_got_plt_entries
,
4400 if (!_bfinfdpic_size_got_plt (obfd
, &gpinfo
))
4408 elf32_bfinfdpic_finish_dynamic_sections (bfd
*output_bfd
,
4409 struct bfd_link_info
*info
)
4414 dynobj
= elf_hash_table (info
)->dynobj
;
4416 if (bfinfdpic_got_section (info
))
4418 BFD_ASSERT (bfinfdpic_gotrel_section (info
)->size
4419 /* PR 17334: It appears that the GOT section can end up
4420 being bigger than the number of relocs. Presumably
4421 because some relocs have been deleted. A test case has
4422 yet to be generated for verify this, but in the meantime
4423 the test below has been changed from == to >= so that
4424 applications can continue to be built. */
4425 >= (bfinfdpic_gotrel_section (info
)->reloc_count
4426 * sizeof (Elf32_External_Rel
)));
4428 if (bfinfdpic_gotfixup_section (info
))
4430 struct elf_link_hash_entry
*hgot
= elf_hash_table (info
)->hgot
;
4431 bfd_vma got_value
= hgot
->root
.u
.def
.value
4432 + hgot
->root
.u
.def
.section
->output_section
->vma
4433 + hgot
->root
.u
.def
.section
->output_offset
;
4435 _bfinfdpic_add_rofixup (output_bfd
, bfinfdpic_gotfixup_section (info
),
4438 if (bfinfdpic_gotfixup_section (info
)->size
4439 != (bfinfdpic_gotfixup_section (info
)->reloc_count
* 4))
4442 ("LINKER BUG: .rofixup section size mismatch");
4447 if (elf_hash_table (info
)->dynamic_sections_created
)
4449 BFD_ASSERT (bfinfdpic_pltrel_section (info
)->size
4450 == (bfinfdpic_pltrel_section (info
)->reloc_count
4451 * sizeof (Elf32_External_Rel
)));
4454 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
4456 if (elf_hash_table (info
)->dynamic_sections_created
)
4458 Elf32_External_Dyn
* dyncon
;
4459 Elf32_External_Dyn
* dynconend
;
4461 BFD_ASSERT (sdyn
!= NULL
);
4463 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
4464 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
4466 for (; dyncon
< dynconend
; dyncon
++)
4468 Elf_Internal_Dyn dyn
;
4470 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
4478 dyn
.d_un
.d_ptr
= bfinfdpic_got_section (info
)->output_section
->vma
4479 + bfinfdpic_got_section (info
)->output_offset
4480 + bfinfdpic_got_initial_offset (info
);
4481 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4485 dyn
.d_un
.d_ptr
= bfinfdpic_pltrel_section (info
)
4486 ->output_section
->vma
4487 + bfinfdpic_pltrel_section (info
)->output_offset
;
4488 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4492 dyn
.d_un
.d_val
= bfinfdpic_pltrel_section (info
)->size
;
4493 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4502 /* Adjust a symbol defined by a dynamic object and referenced by a
4506 elf32_bfinfdpic_adjust_dynamic_symbol (struct bfd_link_info
*info
,
4507 struct elf_link_hash_entry
*h
)
4511 dynobj
= elf_hash_table (info
)->dynobj
;
4513 /* Make sure we know what is going on here. */
4514 BFD_ASSERT (dynobj
!= NULL
4515 && (h
->u
.weakdef
!= NULL
4518 && !h
->def_regular
)));
4520 /* If this is a weak symbol, and there is a real definition, the
4521 processor independent code will have arranged for us to see the
4522 real definition first, and we can just use the same value. */
4523 if (h
->u
.weakdef
!= NULL
)
4525 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
4526 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
4527 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
4528 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
4534 /* Perform any actions needed for dynamic symbols. */
4537 elf32_bfinfdpic_finish_dynamic_symbol
4538 (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4539 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4540 struct elf_link_hash_entry
*h ATTRIBUTE_UNUSED
,
4541 Elf_Internal_Sym
*sym ATTRIBUTE_UNUSED
)
4546 /* Decide whether to attempt to turn absptr or lsda encodings in
4547 shared libraries into pcrel within the given input section. */
4550 bfinfdpic_elf_use_relative_eh_frame
4551 (bfd
*input_bfd ATTRIBUTE_UNUSED
,
4552 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4553 asection
*eh_frame_section ATTRIBUTE_UNUSED
)
4555 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
4559 /* Adjust the contents of an eh_frame_hdr section before they're output. */
4562 bfinfdpic_elf_encode_eh_address (bfd
*abfd
,
4563 struct bfd_link_info
*info
,
4564 asection
*osec
, bfd_vma offset
,
4565 asection
*loc_sec
, bfd_vma loc_offset
,
4568 struct elf_link_hash_entry
*h
;
4570 h
= elf_hash_table (info
)->hgot
;
4571 BFD_ASSERT (h
&& h
->root
.type
== bfd_link_hash_defined
);
4573 if (! h
|| (_bfinfdpic_osec_to_segment (abfd
, osec
)
4574 == _bfinfdpic_osec_to_segment (abfd
, loc_sec
->output_section
)))
4575 return _bfd_elf_encode_eh_address (abfd
, info
, osec
, offset
,
4576 loc_sec
, loc_offset
, encoded
);
4578 BFD_ASSERT (_bfinfdpic_osec_to_segment (abfd
, osec
)
4579 == (_bfinfdpic_osec_to_segment
4580 (abfd
, h
->root
.u
.def
.section
->output_section
)));
4582 *encoded
= osec
->vma
+ offset
4583 - (h
->root
.u
.def
.value
4584 + h
->root
.u
.def
.section
->output_section
->vma
4585 + h
->root
.u
.def
.section
->output_offset
);
4587 return DW_EH_PE_datarel
| DW_EH_PE_sdata4
;
4592 /* Look through the relocs for a section during the first phase.
4594 Besides handling virtual table relocs for gc, we have to deal with
4595 all sorts of PIC-related relocations. We describe below the
4596 general plan on how to handle such relocations, even though we only
4597 collect information at this point, storing them in hash tables for
4598 perusal of later passes.
4600 32 relocations are propagated to the linker output when creating
4601 position-independent output. LO16 and HI16 relocations are not
4602 supposed to be encountered in this case.
4604 LABEL16 should always be resolvable by the linker, since it's only
4607 LABEL24, on the other hand, is used by calls. If it turns out that
4608 the target of a call is a dynamic symbol, a PLT entry must be
4609 created for it, which triggers the creation of a private function
4610 descriptor and, unless lazy binding is disabled, a lazy PLT entry.
4612 GPREL relocations require the referenced symbol to be in the same
4613 segment as _gp, but this can only be checked later.
4615 All GOT, GOTOFF and FUNCDESC relocations require a .got section to
4616 exist. LABEL24 might as well, since it may require a PLT entry,
4617 that will require a got.
4619 Non-FUNCDESC GOT relocations require a GOT entry to be created
4620 regardless of whether the symbol is dynamic. However, since a
4621 global symbol that turns out to not be exported may have the same
4622 address of a non-dynamic symbol, we don't assign GOT entries at
4623 this point, such that we can share them in this case. A relocation
4624 for the GOT entry always has to be created, be it to offset a
4625 private symbol by the section load address, be it to get the symbol
4626 resolved dynamically.
4628 FUNCDESC GOT relocations require a GOT entry to be created, and
4629 handled as if a FUNCDESC relocation was applied to the GOT entry in
4632 FUNCDESC relocations referencing a symbol that turns out to NOT be
4633 dynamic cause a private function descriptor to be created. The
4634 FUNCDESC relocation then decays to a 32 relocation that points at
4635 the private descriptor. If the symbol is dynamic, the FUNCDESC
4636 relocation is propagated to the linker output, such that the
4637 dynamic linker creates the canonical descriptor, pointing to the
4638 dynamically-resolved definition of the function.
4640 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic
4641 symbols that are assigned to the same segment as the GOT, but we
4642 can only check this later, after we know the complete set of
4643 symbols defined and/or exported.
4645 FUNCDESC GOTOFF relocations require a function descriptor to be
4646 created and, unless lazy binding is disabled or the symbol is not
4647 dynamic, a lazy PLT entry. Since we can't tell at this point
4648 whether a symbol is going to be dynamic, we have to decide later
4649 whether to create a lazy PLT entry or bind the descriptor directly
4650 to the private function.
4652 FUNCDESC_VALUE relocations are not supposed to be present in object
4653 files, but they may very well be simply propagated to the linker
4654 output, since they have no side effect.
4657 A function descriptor always requires a FUNCDESC_VALUE relocation.
4658 Whether it's in .plt.rel or not depends on whether lazy binding is
4659 enabled and on whether the referenced symbol is dynamic.
4661 The existence of a lazy PLT requires the resolverStub lazy PLT
4662 entry to be present.
4665 As for assignment of GOT, PLT and lazy PLT entries, and private
4666 descriptors, we might do them all sequentially, but we can do
4667 better than that. For example, we can place GOT entries and
4668 private function descriptors referenced using 12-bit operands
4669 closer to the PIC register value, such that these relocations don't
4670 overflow. Those that are only referenced with LO16 relocations
4671 could come next, but we may as well place PLT-required function
4672 descriptors in the 12-bit range to make them shorter. Symbols
4673 referenced with LO16/HI16 may come next, but we may place
4674 additional function descriptors in the 16-bit range if we can
4675 reliably tell that we've already placed entries that are ever
4676 referenced with only LO16. PLT entries are therefore generated as
4677 small as possible, while not introducing relocation overflows in
4678 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be
4679 generated before or after PLT entries, but not intermingled with
4680 them, such that we can have more lazy PLT entries in range for a
4681 branch to the resolverStub. The resolverStub should be emitted at
4682 the most distant location from the first lazy PLT entry such that
4683 it's still in range for a branch, or closer, if there isn't a need
4684 for so many lazy PLT entries. Additional lazy PLT entries may be
4685 emitted after the resolverStub, as long as branches are still in
4686 range. If the branch goes out of range, longer lazy PLT entries
4689 We could further optimize PLT and lazy PLT entries by giving them
4690 priority in assignment to closer-to-gr17 locations depending on the
4691 number of occurrences of references to them (assuming a function
4692 that's called more often is more important for performance, so its
4693 PLT entry should be faster), or taking hints from the compiler.
4694 Given infinite time and money... :-) */
4697 bfinfdpic_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4698 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4700 Elf_Internal_Shdr
*symtab_hdr
;
4701 struct elf_link_hash_entry
**sym_hashes
;
4702 const Elf_Internal_Rela
*rel
;
4703 const Elf_Internal_Rela
*rel_end
;
4705 struct bfinfdpic_relocs_info
*picrel
;
4707 if (bfd_link_relocatable (info
))
4710 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4711 sym_hashes
= elf_sym_hashes (abfd
);
4713 dynobj
= elf_hash_table (info
)->dynobj
;
4714 rel_end
= relocs
+ sec
->reloc_count
;
4715 for (rel
= relocs
; rel
< rel_end
; rel
++)
4717 struct elf_link_hash_entry
*h
;
4718 unsigned long r_symndx
;
4720 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4721 if (r_symndx
< symtab_hdr
->sh_info
)
4724 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4726 switch (ELF32_R_TYPE (rel
->r_info
))
4728 case R_BFIN_GOT17M4
:
4731 case R_BFIN_FUNCDESC_GOT17M4
:
4732 case R_BFIN_FUNCDESC_GOTHI
:
4733 case R_BFIN_FUNCDESC_GOTLO
:
4734 case R_BFIN_GOTOFF17M4
:
4735 case R_BFIN_GOTOFFHI
:
4736 case R_BFIN_GOTOFFLO
:
4737 case R_BFIN_FUNCDESC_GOTOFF17M4
:
4738 case R_BFIN_FUNCDESC_GOTOFFHI
:
4739 case R_BFIN_FUNCDESC_GOTOFFLO
:
4740 case R_BFIN_FUNCDESC
:
4741 case R_BFIN_FUNCDESC_VALUE
:
4742 if (! IS_FDPIC (abfd
))
4745 case R_BFIN_PCREL24
:
4746 case R_BFIN_PCREL24_JUMP_L
:
4747 case R_BFIN_BYTE4_DATA
:
4748 if (IS_FDPIC (abfd
) && ! dynobj
)
4750 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
4751 if (! _bfin_create_got_section (abfd
, info
))
4754 if (! IS_FDPIC (abfd
))
4761 if (h
->dynindx
== -1)
4762 switch (ELF_ST_VISIBILITY (h
->other
))
4768 bfd_elf_link_record_dynamic_symbol (info
, h
);
4772 = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info
),
4774 rel
->r_addend
, INSERT
);
4777 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
4778 (info
), abfd
, r_symndx
,
4779 rel
->r_addend
, INSERT
);
4789 switch (ELF32_R_TYPE (rel
->r_info
))
4791 case R_BFIN_PCREL24
:
4792 case R_BFIN_PCREL24_JUMP_L
:
4793 if (IS_FDPIC (abfd
))
4797 case R_BFIN_FUNCDESC_VALUE
:
4798 picrel
->relocsfdv
++;
4799 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
4803 case R_BFIN_BYTE4_DATA
:
4804 if (! IS_FDPIC (abfd
))
4808 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
4812 case R_BFIN_GOT17M4
:
4821 case R_BFIN_FUNCDESC_GOT17M4
:
4822 picrel
->fdgot17m4
++;
4825 case R_BFIN_FUNCDESC_GOTHI
:
4826 case R_BFIN_FUNCDESC_GOTLO
:
4827 picrel
->fdgothilo
++;
4830 case R_BFIN_GOTOFF17M4
:
4831 case R_BFIN_GOTOFFHI
:
4832 case R_BFIN_GOTOFFLO
:
4836 case R_BFIN_FUNCDESC_GOTOFF17M4
:
4837 picrel
->fdgoff17m4
++;
4840 case R_BFIN_FUNCDESC_GOTOFFHI
:
4841 case R_BFIN_FUNCDESC_GOTOFFLO
:
4842 picrel
->fdgoffhilo
++;
4845 case R_BFIN_FUNCDESC
:
4850 /* This relocation describes the C++ object vtable hierarchy.
4851 Reconstruct it for later use during GC. */
4852 case R_BFIN_GNU_VTINHERIT
:
4853 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4857 /* This relocation describes which C++ vtable entries are actually
4858 used. Record for later use during GC. */
4859 case R_BFIN_GNU_VTENTRY
:
4860 BFD_ASSERT (h
!= NULL
);
4862 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4866 case R_BFIN_HUIMM16
:
4867 case R_BFIN_LUIMM16
:
4868 case R_BFIN_PCREL12_JUMP_S
:
4869 case R_BFIN_PCREL10
:
4875 /* xgettext:c-format */
4876 (_("%B: unsupported relocation type %d"),
4877 abfd
, (int) ELF32_R_TYPE (rel
->r_info
));
4885 /* Set the right machine number for a Blackfin ELF file. */
4888 elf32_bfin_object_p (bfd
*abfd
)
4890 bfd_default_set_arch_mach (abfd
, bfd_arch_bfin
, 0);
4891 return (((elf_elfheader (abfd
)->e_flags
& EF_BFIN_FDPIC
) != 0)
4892 == (IS_FDPIC (abfd
)));
4896 elf32_bfin_set_private_flags (bfd
* abfd
, flagword flags
)
4898 elf_elfheader (abfd
)->e_flags
= flags
;
4899 elf_flags_init (abfd
) = TRUE
;
4903 /* Display the flags field. */
4905 elf32_bfin_print_private_bfd_data (bfd
* abfd
, void * ptr
)
4907 FILE *file
= (FILE *) ptr
;
4910 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
4912 /* Print normal ELF private data. */
4913 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
4915 flags
= elf_elfheader (abfd
)->e_flags
;
4917 /* xgettext:c-format */
4918 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
4920 if (flags
& EF_BFIN_PIC
)
4921 fprintf (file
, " -fpic");
4923 if (flags
& EF_BFIN_FDPIC
)
4924 fprintf (file
, " -mfdpic");
4931 /* Merge backend specific data from an object file to the output
4932 object file when linking. */
4935 elf32_bfin_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
4937 bfd
*obfd
= info
->output_bfd
;
4938 flagword old_flags
, new_flags
;
4939 bfd_boolean error
= FALSE
;
4941 new_flags
= elf_elfheader (ibfd
)->e_flags
;
4942 old_flags
= elf_elfheader (obfd
)->e_flags
;
4944 if (new_flags
& EF_BFIN_FDPIC
)
4945 new_flags
&= ~EF_BFIN_PIC
;
4951 ("old_flags = 0x%.8x, new_flags = 0x%.8x, init = %s, filename = %B",
4952 old_flags
, new_flags
, elf_flags_init (obfd
) ? "yes" : "no", ibfd
);
4954 if (!elf_flags_init (obfd
)) /* First call, no flags set. */
4956 elf_flags_init (obfd
) = TRUE
;
4957 elf_elfheader (obfd
)->e_flags
= new_flags
;
4960 if (((new_flags
& EF_BFIN_FDPIC
) == 0) != (! IS_FDPIC (obfd
)))
4963 if (IS_FDPIC (obfd
))
4965 (_("%B: cannot link non-fdpic object file into fdpic executable"),
4969 (_("%B: cannot link fdpic object file into non-fdpic executable"),
4974 bfd_set_error (bfd_error_bad_value
);
4979 /* bfin ELF linker hash entry. */
4981 struct bfin_link_hash_entry
4983 struct elf_link_hash_entry root
;
4985 /* Number of PC relative relocs copied for this symbol. */
4986 struct bfin_pcrel_relocs_copied
*pcrel_relocs_copied
;
4989 /* bfin ELF linker hash table. */
4991 struct bfin_link_hash_table
4993 struct elf_link_hash_table root
;
4995 /* Small local sym cache. */
4996 struct sym_cache sym_cache
;
4999 #define bfin_hash_entry(ent) ((struct bfin_link_hash_entry *) (ent))
5001 static struct bfd_hash_entry
*
5002 bfin_link_hash_newfunc (struct bfd_hash_entry
*entry
,
5003 struct bfd_hash_table
*table
, const char *string
)
5005 struct bfd_hash_entry
*ret
= entry
;
5007 /* Allocate the structure if it has not already been allocated by a
5010 ret
= bfd_hash_allocate (table
, sizeof (struct bfin_link_hash_entry
));
5014 /* Call the allocation method of the superclass. */
5015 ret
= _bfd_elf_link_hash_newfunc (ret
, table
, string
);
5017 bfin_hash_entry (ret
)->pcrel_relocs_copied
= NULL
;
5022 /* Create an bfin ELF linker hash table. */
5024 static struct bfd_link_hash_table
*
5025 bfin_link_hash_table_create (bfd
* abfd
)
5027 struct bfin_link_hash_table
*ret
;
5028 bfd_size_type amt
= sizeof (struct bfin_link_hash_table
);
5030 ret
= bfd_zmalloc (amt
);
5034 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
5035 bfin_link_hash_newfunc
,
5036 sizeof (struct elf_link_hash_entry
),
5043 ret
->sym_cache
.abfd
= NULL
;
5045 return &ret
->root
.root
;
5048 /* The size in bytes of an entry in the procedure linkage table. */
5050 /* Finish up the dynamic sections. */
5053 bfin_finish_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
5054 struct bfd_link_info
*info
)
5059 dynobj
= elf_hash_table (info
)->dynobj
;
5061 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
5063 if (elf_hash_table (info
)->dynamic_sections_created
)
5065 Elf32_External_Dyn
*dyncon
, *dynconend
;
5067 BFD_ASSERT (sdyn
!= NULL
);
5069 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
5070 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
5071 for (; dyncon
< dynconend
; dyncon
++)
5073 Elf_Internal_Dyn dyn
;
5075 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
5083 /* Finish up dynamic symbol handling. We set the contents of various
5084 dynamic sections here. */
5087 bfin_finish_dynamic_symbol (bfd
* output_bfd
,
5088 struct bfd_link_info
*info
,
5089 struct elf_link_hash_entry
*h
,
5090 Elf_Internal_Sym
* sym
)
5092 if (h
->got
.offset
!= (bfd_vma
) - 1)
5096 Elf_Internal_Rela rela
;
5099 /* This symbol has an entry in the global offset table.
5102 sgot
= elf_hash_table (info
)->sgot
;
5103 srela
= elf_hash_table (info
)->srelgot
;
5104 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
5106 rela
.r_offset
= (sgot
->output_section
->vma
5107 + sgot
->output_offset
5108 + (h
->got
.offset
& ~(bfd_vma
) 1));
5110 /* If this is a -Bsymbolic link, and the symbol is defined
5111 locally, we just want to emit a RELATIVE reloc. Likewise if
5112 the symbol was forced to be local because of a version file.
5113 The entry in the global offset table will already have been
5114 initialized in the relocate_section function. */
5115 if (bfd_link_pic (info
)
5117 || h
->dynindx
== -1 || h
->forced_local
) && h
->def_regular
)
5119 _bfd_error_handler (_("*** check this relocation %s"),
5121 rela
.r_info
= ELF32_R_INFO (0, R_BFIN_PCREL24
);
5122 rela
.r_addend
= bfd_get_signed_32 (output_bfd
,
5126 offset
& ~(bfd_vma
) 1)));
5130 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
5131 sgot
->contents
+ (h
->got
.offset
& ~(bfd_vma
) 1));
5132 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_BFIN_GOT
);
5136 loc
= srela
->contents
;
5137 loc
+= srela
->reloc_count
++ * sizeof (Elf32_External_Rela
);
5138 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
5145 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
5146 if (strcmp (h
->root
.root
.string
, "__DYNAMIC") == 0
5147 || h
== elf_hash_table (info
)->hgot
)
5148 sym
->st_shndx
= SHN_ABS
;
5153 /* Adjust a symbol defined by a dynamic object and referenced by a
5154 regular object. The current definition is in some section of the
5155 dynamic object, but we're not including those sections. We have to
5156 change the definition to something the rest of the link can
5160 bfin_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5161 struct elf_link_hash_entry
*h
)
5165 unsigned int power_of_two
;
5167 dynobj
= elf_hash_table (info
)->dynobj
;
5169 /* Make sure we know what is going on here. */
5170 BFD_ASSERT (dynobj
!= NULL
5172 || h
->u
.weakdef
!= NULL
5173 || (h
->def_dynamic
&& h
->ref_regular
&& !h
->def_regular
)));
5175 /* If this is a function, put it in the procedure linkage table. We
5176 will fill in the contents of the procedure linkage table later,
5177 when we know the address of the .got section. */
5178 if (h
->type
== STT_FUNC
|| h
->needs_plt
)
5183 /* If this is a weak symbol, and there is a real definition, the
5184 processor independent code will have arranged for us to see the
5185 real definition first, and we can just use the same value. */
5186 if (h
->u
.weakdef
!= NULL
)
5188 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5189 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5190 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5191 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5195 /* This is a reference to a symbol defined by a dynamic object which
5196 is not a function. */
5198 /* If we are creating a shared library, we must presume that the
5199 only references to the symbol are via the global offset table.
5200 For such cases we need not do anything here; the relocations will
5201 be handled correctly by relocate_section. */
5202 if (bfd_link_pic (info
))
5205 /* We must allocate the symbol in our .dynbss section, which will
5206 become part of the .bss section of the executable. There will be
5207 an entry for this symbol in the .dynsym section. The dynamic
5208 object will contain position independent code, so all references
5209 from the dynamic object to this symbol will go through the global
5210 offset table. The dynamic linker will use the .dynsym entry to
5211 determine the address it must put in the global offset table, so
5212 both the dynamic object and the regular object will refer to the
5213 same memory location for the variable. */
5215 s
= bfd_get_linker_section (dynobj
, ".dynbss");
5216 BFD_ASSERT (s
!= NULL
);
5218 #if 0 /* Bfin does not currently have a COPY reloc. */
5219 /* We must generate a R_BFIN_COPY reloc to tell the dynamic linker to
5220 copy the initial value out of the dynamic object and into the
5221 runtime process image. We need to remember the offset into the
5222 .rela.bss section we are going to use. */
5223 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
5227 srel
= bfd_get_linker_section (dynobj
, ".rela.bss");
5228 BFD_ASSERT (srel
!= NULL
);
5229 srel
->size
+= sizeof (Elf32_External_Rela
);
5233 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
5235 _bfd_error_handler (_("the bfin target does not currently support the generation of copy relocations"));
5239 /* We need to figure out the alignment required for this symbol. I
5240 have no idea how ELF linkers handle this. */
5241 power_of_two
= bfd_log2 (h
->size
);
5242 if (power_of_two
> 3)
5245 /* Apply the required alignment. */
5246 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
5247 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
5249 if (!bfd_set_section_alignment (dynobj
, s
, power_of_two
))
5253 /* Define the symbol as being at this point in the section. */
5254 h
->root
.u
.def
.section
= s
;
5255 h
->root
.u
.def
.value
= s
->size
;
5257 /* Increment the section size to make room for the symbol. */
5263 /* The bfin linker needs to keep track of the number of relocs that it
5264 decides to copy in check_relocs for each symbol. This is so that it
5265 can discard PC relative relocs if it doesn't need them when linking
5266 with -Bsymbolic. We store the information in a field extending the
5267 regular ELF linker hash table. */
5269 /* This structure keeps track of the number of PC relative relocs we have
5270 copied for a given symbol. */
5272 struct bfin_pcrel_relocs_copied
5275 struct bfin_pcrel_relocs_copied
*next
;
5276 /* A section in dynobj. */
5278 /* Number of relocs copied in this section. */
5279 bfd_size_type count
;
5282 /* This function is called via elf_link_hash_traverse if we are
5283 creating a shared object. In the -Bsymbolic case it discards the
5284 space allocated to copy PC relative relocs against symbols which
5285 are defined in regular objects. For the normal shared case, it
5286 discards space for pc-relative relocs that have become local due to
5287 symbol visibility changes. We allocated space for them in the
5288 check_relocs routine, but we won't fill them in in the
5289 relocate_section routine.
5291 We also check whether any of the remaining relocations apply
5292 against a readonly section, and set the DF_TEXTREL flag in this
5296 bfin_discard_copies (struct elf_link_hash_entry
*h
, void * inf
)
5298 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5299 struct bfin_pcrel_relocs_copied
*s
;
5301 if (!h
->def_regular
|| (!info
->symbolic
&& !h
->forced_local
))
5303 if ((info
->flags
& DF_TEXTREL
) == 0)
5305 /* Look for relocations against read-only sections. */
5306 for (s
= bfin_hash_entry (h
)->pcrel_relocs_copied
;
5307 s
!= NULL
; s
= s
->next
)
5308 if ((s
->section
->flags
& SEC_READONLY
) != 0)
5310 info
->flags
|= DF_TEXTREL
;
5318 for (s
= bfin_hash_entry (h
)->pcrel_relocs_copied
;
5319 s
!= NULL
; s
= s
->next
)
5320 s
->section
->size
-= s
->count
* sizeof (Elf32_External_Rela
);
5326 bfin_size_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
5327 struct bfd_link_info
*info
)
5333 dynobj
= elf_hash_table (info
)->dynobj
;
5334 BFD_ASSERT (dynobj
!= NULL
);
5336 if (elf_hash_table (info
)->dynamic_sections_created
)
5338 /* Set the contents of the .interp section to the interpreter. */
5339 if (bfd_link_executable (info
) && !info
->nointerp
)
5341 s
= bfd_get_linker_section (dynobj
, ".interp");
5342 BFD_ASSERT (s
!= NULL
);
5343 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
5344 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
5349 /* We may have created entries in the .rela.got section.
5350 However, if we are not creating the dynamic sections, we will
5351 not actually use these entries. Reset the size of .rela.got,
5352 which will cause it to get stripped from the output file
5354 s
= elf_hash_table (info
)->srelgot
;
5359 /* If this is a -Bsymbolic shared link, then we need to discard all
5360 PC relative relocs against symbols defined in a regular object.
5361 For the normal shared case we discard the PC relative relocs
5362 against symbols that have become local due to visibility changes.
5363 We allocated space for them in the check_relocs routine, but we
5364 will not fill them in in the relocate_section routine. */
5365 if (bfd_link_pic (info
))
5366 elf_link_hash_traverse (elf_hash_table (info
),
5367 bfin_discard_copies
, info
);
5369 /* The check_relocs and adjust_dynamic_symbol entry points have
5370 determined the sizes of the various dynamic sections. Allocate
5373 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
5378 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
5381 /* It's OK to base decisions on the section name, because none
5382 of the dynobj section names depend upon the input files. */
5383 name
= bfd_get_section_name (dynobj
, s
);
5387 if (CONST_STRNEQ (name
, ".rela"))
5391 /* If we don't need this section, strip it from the
5392 output file. This is mostly to handle .rela.bss and
5393 .rela.plt. We must create both sections in
5394 create_dynamic_sections, because they must be created
5395 before the linker maps input sections to output
5396 sections. The linker does that before
5397 adjust_dynamic_symbol is called, and it is that
5398 function which decides whether anything needs to go
5399 into these sections. */
5406 /* We use the reloc_count field as a counter if we need
5407 to copy relocs into the output file. */
5411 else if (! CONST_STRNEQ (name
, ".got"))
5413 /* It's not one of our sections, so don't allocate space. */
5419 s
->flags
|= SEC_EXCLUDE
;
5423 /* Allocate memory for the section contents. */
5424 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
5425 Unused entries should be reclaimed before the section's contents
5426 are written out, but at the moment this does not happen. Thus in
5427 order to prevent writing out garbage, we initialise the section's
5428 contents to zero. */
5429 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
5430 if (s
->contents
== NULL
&& s
->size
!= 0)
5434 if (elf_hash_table (info
)->dynamic_sections_created
)
5436 /* Add some entries to the .dynamic section. We fill in the
5437 values later, in bfin_finish_dynamic_sections, but we
5438 must add the entries now so that we get the correct size for
5439 the .dynamic section. The DT_DEBUG entry is filled in by the
5440 dynamic linker and used by the debugger. */
5441 #define add_dynamic_entry(TAG, VAL) \
5442 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5444 if (!bfd_link_pic (info
))
5446 if (!add_dynamic_entry (DT_DEBUG
, 0))
5453 if (!add_dynamic_entry (DT_RELA
, 0)
5454 || !add_dynamic_entry (DT_RELASZ
, 0)
5455 || !add_dynamic_entry (DT_RELAENT
,
5456 sizeof (Elf32_External_Rela
)))
5460 if ((info
->flags
& DF_TEXTREL
) != 0)
5462 if (!add_dynamic_entry (DT_TEXTREL
, 0))
5466 #undef add_dynamic_entry
5471 /* Given a .data section and a .emreloc in-memory section, store
5472 relocation information into the .emreloc section which can be
5473 used at runtime to relocate the section. This is called by the
5474 linker when the --embedded-relocs switch is used. This is called
5475 after the add_symbols entry point has been called for all the
5476 objects, and before the final_link entry point is called. */
5479 bfd_bfin_elf32_create_embedded_relocs (bfd
*abfd
,
5480 struct bfd_link_info
*info
,
5485 Elf_Internal_Shdr
*symtab_hdr
;
5486 Elf_Internal_Sym
*isymbuf
= NULL
;
5487 Elf_Internal_Rela
*internal_relocs
= NULL
;
5488 Elf_Internal_Rela
*irel
, *irelend
;
5492 BFD_ASSERT (! bfd_link_relocatable (info
));
5496 if (datasec
->reloc_count
== 0)
5499 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5501 /* Get a copy of the native relocations. */
5502 internal_relocs
= (_bfd_elf_link_read_relocs
5503 (abfd
, datasec
, NULL
, (Elf_Internal_Rela
*) NULL
,
5504 info
->keep_memory
));
5505 if (internal_relocs
== NULL
)
5508 amt
= (bfd_size_type
) datasec
->reloc_count
* 12;
5509 relsec
->contents
= (bfd_byte
*) bfd_alloc (abfd
, amt
);
5510 if (relsec
->contents
== NULL
)
5513 p
= relsec
->contents
;
5515 irelend
= internal_relocs
+ datasec
->reloc_count
;
5516 for (irel
= internal_relocs
; irel
< irelend
; irel
++, p
+= 12)
5518 asection
*targetsec
;
5520 /* We are going to write a four byte longword into the runtime
5521 reloc section. The longword will be the address in the data
5522 section which must be relocated. It is followed by the name
5523 of the target section NUL-padded or truncated to 8
5526 /* We can only relocate absolute longword relocs at run time. */
5527 if (ELF32_R_TYPE (irel
->r_info
) != (int) R_BFIN_BYTE4_DATA
)
5529 *errmsg
= _("unsupported reloc type");
5530 bfd_set_error (bfd_error_bad_value
);
5534 /* Get the target section referred to by the reloc. */
5535 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
5537 /* A local symbol. */
5538 Elf_Internal_Sym
*isym
;
5540 /* Read this BFD's local symbols if we haven't done so already. */
5541 if (isymbuf
== NULL
)
5543 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5544 if (isymbuf
== NULL
)
5545 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
5546 symtab_hdr
->sh_info
, 0,
5548 if (isymbuf
== NULL
)
5552 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
5553 targetsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5558 struct elf_link_hash_entry
*h
;
5560 /* An external symbol. */
5561 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
5562 h
= elf_sym_hashes (abfd
)[indx
];
5563 BFD_ASSERT (h
!= NULL
);
5564 if (h
->root
.type
== bfd_link_hash_defined
5565 || h
->root
.type
== bfd_link_hash_defweak
)
5566 targetsec
= h
->root
.u
.def
.section
;
5571 bfd_put_32 (abfd
, irel
->r_offset
+ datasec
->output_offset
, p
);
5572 memset (p
+ 4, 0, 8);
5573 if (targetsec
!= NULL
)
5574 strncpy ((char *) p
+ 4, targetsec
->output_section
->name
, 8);
5577 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5579 if (internal_relocs
!= NULL
5580 && elf_section_data (datasec
)->relocs
!= internal_relocs
)
5581 free (internal_relocs
);
5585 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5587 if (internal_relocs
!= NULL
5588 && elf_section_data (datasec
)->relocs
!= internal_relocs
)
5589 free (internal_relocs
);
5593 struct bfd_elf_special_section
const elf32_bfin_special_sections
[] =
5595 { ".l1.text", 8, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
5596 { ".l1.data", 8, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
5597 { NULL
, 0, 0, 0, 0 }
5601 #define TARGET_LITTLE_SYM bfin_elf32_vec
5602 #define TARGET_LITTLE_NAME "elf32-bfin"
5603 #define ELF_ARCH bfd_arch_bfin
5604 #define ELF_TARGET_ID BFIN_ELF_DATA
5605 #define ELF_MACHINE_CODE EM_BLACKFIN
5606 #define ELF_MAXPAGESIZE 0x1000
5607 #define elf_symbol_leading_char '_'
5609 #define bfd_elf32_bfd_reloc_type_lookup bfin_bfd_reloc_type_lookup
5610 #define bfd_elf32_bfd_reloc_name_lookup \
5611 bfin_bfd_reloc_name_lookup
5612 #define elf_info_to_howto bfin_info_to_howto
5613 #define elf_info_to_howto_rel 0
5614 #define elf_backend_object_p elf32_bfin_object_p
5616 #define bfd_elf32_bfd_is_local_label_name \
5617 bfin_is_local_label_name
5618 #define bfin_hash_table(p) \
5619 ((struct bfin_link_hash_table *) (p)->hash)
5623 #define elf_backend_create_dynamic_sections \
5624 _bfd_elf_create_dynamic_sections
5625 #define bfd_elf32_bfd_link_hash_table_create \
5626 bfin_link_hash_table_create
5627 #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link
5629 #define elf_backend_check_relocs bfin_check_relocs
5630 #define elf_backend_adjust_dynamic_symbol \
5631 bfin_adjust_dynamic_symbol
5632 #define elf_backend_size_dynamic_sections \
5633 bfin_size_dynamic_sections
5634 #define elf_backend_relocate_section bfin_relocate_section
5635 #define elf_backend_finish_dynamic_symbol \
5636 bfin_finish_dynamic_symbol
5637 #define elf_backend_finish_dynamic_sections \
5638 bfin_finish_dynamic_sections
5639 #define elf_backend_gc_mark_hook bfin_gc_mark_hook
5640 #define elf_backend_gc_sweep_hook bfin_gc_sweep_hook
5641 #define bfd_elf32_bfd_merge_private_bfd_data \
5642 elf32_bfin_merge_private_bfd_data
5643 #define bfd_elf32_bfd_set_private_flags \
5644 elf32_bfin_set_private_flags
5645 #define bfd_elf32_bfd_print_private_bfd_data \
5646 elf32_bfin_print_private_bfd_data
5647 #define elf_backend_final_write_processing \
5648 elf32_bfin_final_write_processing
5649 #define elf_backend_reloc_type_class elf32_bfin_reloc_type_class
5650 #define elf_backend_stack_align 8
5651 #define elf_backend_can_gc_sections 1
5652 #define elf_backend_special_sections elf32_bfin_special_sections
5653 #define elf_backend_can_refcount 1
5654 #define elf_backend_want_got_plt 0
5655 #define elf_backend_plt_readonly 1
5656 #define elf_backend_want_plt_sym 0
5657 #define elf_backend_got_header_size 12
5658 #define elf_backend_rela_normal 1
5660 #include "elf32-target.h"
5662 #undef TARGET_LITTLE_SYM
5663 #define TARGET_LITTLE_SYM bfin_elf32_fdpic_vec
5664 #undef TARGET_LITTLE_NAME
5665 #define TARGET_LITTLE_NAME "elf32-bfinfdpic"
5667 #define elf32_bed elf32_bfinfdpic_bed
5669 #undef elf_backend_gc_sweep_hook
5670 #define elf_backend_gc_sweep_hook bfinfdpic_gc_sweep_hook
5672 #undef elf_backend_got_header_size
5673 #define elf_backend_got_header_size 0
5675 #undef elf_backend_relocate_section
5676 #define elf_backend_relocate_section bfinfdpic_relocate_section
5677 #undef elf_backend_check_relocs
5678 #define elf_backend_check_relocs bfinfdpic_check_relocs
5680 #undef bfd_elf32_bfd_link_hash_table_create
5681 #define bfd_elf32_bfd_link_hash_table_create \
5682 bfinfdpic_elf_link_hash_table_create
5683 #undef elf_backend_always_size_sections
5684 #define elf_backend_always_size_sections \
5685 elf32_bfinfdpic_always_size_sections
5687 #undef elf_backend_create_dynamic_sections
5688 #define elf_backend_create_dynamic_sections \
5689 elf32_bfinfdpic_create_dynamic_sections
5690 #undef elf_backend_adjust_dynamic_symbol
5691 #define elf_backend_adjust_dynamic_symbol \
5692 elf32_bfinfdpic_adjust_dynamic_symbol
5693 #undef elf_backend_size_dynamic_sections
5694 #define elf_backend_size_dynamic_sections \
5695 elf32_bfinfdpic_size_dynamic_sections
5696 #undef elf_backend_finish_dynamic_symbol
5697 #define elf_backend_finish_dynamic_symbol \
5698 elf32_bfinfdpic_finish_dynamic_symbol
5699 #undef elf_backend_finish_dynamic_sections
5700 #define elf_backend_finish_dynamic_sections \
5701 elf32_bfinfdpic_finish_dynamic_sections
5703 #undef elf_backend_discard_info
5704 #define elf_backend_discard_info \
5705 bfinfdpic_elf_discard_info
5706 #undef elf_backend_can_make_relative_eh_frame
5707 #define elf_backend_can_make_relative_eh_frame \
5708 bfinfdpic_elf_use_relative_eh_frame
5709 #undef elf_backend_can_make_lsda_relative_eh_frame
5710 #define elf_backend_can_make_lsda_relative_eh_frame \
5711 bfinfdpic_elf_use_relative_eh_frame
5712 #undef elf_backend_encode_eh_address
5713 #define elf_backend_encode_eh_address \
5714 bfinfdpic_elf_encode_eh_address
5716 #undef elf_backend_may_use_rel_p
5717 #define elf_backend_may_use_rel_p 1
5718 #undef elf_backend_may_use_rela_p
5719 #define elf_backend_may_use_rela_p 1
5720 /* We use REL for dynamic relocations only. */
5721 #undef elf_backend_default_use_rela_p
5722 #define elf_backend_default_use_rela_p 1
5724 #undef elf_backend_omit_section_dynsym
5725 #define elf_backend_omit_section_dynsym _bfinfdpic_link_omit_section_dynsym
5727 #include "elf32-target.h"