1 /* ADI Blackfin BFD support for 32-bit ELF.
2 Copyright (C) 2005-2015 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
== TRUE
)
334 relocation
-= input_section
->output_section
->vma
+ input_section
->output_offset
;
336 if (howto
->pcrel_offset
== TRUE
)
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
= 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
))
1231 sgot
= bfd_get_linker_section (dynobj
, ".got");
1232 BFD_ASSERT (sgot
!= NULL
);
1235 if (srelgot
== NULL
&& (h
!= NULL
|| bfd_link_pic (info
)))
1237 srelgot
= bfd_get_linker_section (dynobj
, ".rela.got");
1238 if (srelgot
== NULL
)
1240 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
1241 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
1243 srelgot
= bfd_make_section_anyway_with_flags (dynobj
,
1247 || !bfd_set_section_alignment (dynobj
, srelgot
, 2))
1254 if (h
->got
.refcount
== 0)
1256 /* Make sure this symbol is output as a dynamic symbol. */
1257 if (h
->dynindx
== -1 && !h
->forced_local
)
1259 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
1263 /* Allocate space in the .got section. */
1265 /* Allocate relocation space. */
1266 srelgot
->size
+= sizeof (Elf32_External_Rela
);
1272 /* This is a global offset table entry for a local symbol. */
1273 if (local_got_refcounts
== NULL
)
1277 size
= symtab_hdr
->sh_info
;
1278 size
*= sizeof (bfd_signed_vma
);
1279 local_got_refcounts
= ((bfd_signed_vma
*)
1280 bfd_zalloc (abfd
, size
));
1281 if (local_got_refcounts
== NULL
)
1283 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
1285 if (local_got_refcounts
[r_symndx
] == 0)
1288 if (bfd_link_pic (info
))
1290 /* If we are generating a shared object, we need to
1291 output a R_68K_RELATIVE reloc so that the dynamic
1292 linker can adjust this GOT entry. */
1293 srelgot
->size
+= sizeof (Elf32_External_Rela
);
1296 local_got_refcounts
[r_symndx
]++;
1308 static enum elf_reloc_type_class
1309 elf32_bfin_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
1310 const asection
*rel_sec ATTRIBUTE_UNUSED
,
1311 const Elf_Internal_Rela
* rela
)
1313 switch ((int) ELF32_R_TYPE (rela
->r_info
))
1316 return reloc_class_normal
;
1320 static bfd_reloc_status_type
1321 bfin_final_link_relocate (Elf_Internal_Rela
*rel
, reloc_howto_type
*howto
,
1322 bfd
*input_bfd
, asection
*input_section
,
1323 bfd_byte
*contents
, bfd_vma address
,
1324 bfd_vma value
, bfd_vma addend
)
1326 int r_type
= ELF32_R_TYPE (rel
->r_info
);
1328 if (r_type
== R_BFIN_PCREL24
|| r_type
== R_BFIN_PCREL24_JUMP_L
)
1330 bfd_reloc_status_type r
= bfd_reloc_ok
;
1333 if (address
> bfd_get_section_limit (input_bfd
, input_section
))
1334 return bfd_reloc_outofrange
;
1338 /* Perform usual pc-relative correction. */
1339 value
-= input_section
->output_section
->vma
+ input_section
->output_offset
;
1342 /* We are getting reloc_entry->address 2 byte off from
1343 the start of instruction. Assuming absolute postion
1344 of the reloc data. But, following code had been written assuming
1345 reloc address is starting at begining of instruction.
1346 To compensate that I have increased the value of
1347 relocation by 1 (effectively 2) and used the addr -2 instead of addr. */
1352 if ((value
& 0xFF000000) != 0
1353 && (value
& 0xFF000000) != 0xFF000000)
1354 r
= bfd_reloc_overflow
;
1358 x
= bfd_get_16 (input_bfd
, contents
+ address
);
1359 x
= (x
& 0xff00) | ((value
>> 16) & 0xff);
1360 bfd_put_16 (input_bfd
, x
, contents
+ address
);
1362 x
= bfd_get_16 (input_bfd
, contents
+ address
+ 2);
1364 bfd_put_16 (input_bfd
, x
, contents
+ address
+ 2);
1368 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
, contents
,
1369 rel
->r_offset
, value
, addend
);
1374 bfin_relocate_section (bfd
* output_bfd
,
1375 struct bfd_link_info
*info
,
1377 asection
* input_section
,
1378 bfd_byte
* contents
,
1379 Elf_Internal_Rela
* relocs
,
1380 Elf_Internal_Sym
* local_syms
,
1381 asection
** local_sections
)
1384 Elf_Internal_Shdr
*symtab_hdr
;
1385 struct elf_link_hash_entry
**sym_hashes
;
1386 bfd_vma
*local_got_offsets
;
1388 Elf_Internal_Rela
*rel
;
1389 Elf_Internal_Rela
*relend
;
1392 dynobj
= elf_hash_table (info
)->dynobj
;
1393 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
1394 sym_hashes
= elf_sym_hashes (input_bfd
);
1395 local_got_offsets
= elf_local_got_offsets (input_bfd
);
1400 relend
= relocs
+ input_section
->reloc_count
;
1401 for (; rel
< relend
; rel
++, i
++)
1404 reloc_howto_type
*howto
;
1405 unsigned long r_symndx
;
1406 struct elf_link_hash_entry
*h
;
1407 Elf_Internal_Sym
*sym
;
1409 bfd_vma relocation
= 0;
1410 bfd_boolean unresolved_reloc
;
1411 bfd_reloc_status_type r
;
1414 r_type
= ELF32_R_TYPE (rel
->r_info
);
1415 if (r_type
< 0 || r_type
>= 243)
1417 bfd_set_error (bfd_error_bad_value
);
1421 if (r_type
== R_BFIN_GNU_VTENTRY
1422 || r_type
== R_BFIN_GNU_VTINHERIT
)
1425 howto
= bfin_reloc_type_lookup (input_bfd
, r_type
);
1428 bfd_set_error (bfd_error_bad_value
);
1431 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1436 unresolved_reloc
= FALSE
;
1438 if (r_symndx
< symtab_hdr
->sh_info
)
1440 sym
= local_syms
+ r_symndx
;
1441 sec
= local_sections
[r_symndx
];
1442 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
1446 bfd_boolean warned
, ignored
;
1448 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
1449 r_symndx
, symtab_hdr
, sym_hashes
,
1451 unresolved_reloc
, warned
, ignored
);
1454 if (sec
!= NULL
&& discarded_section (sec
))
1455 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
1456 rel
, 1, relend
, howto
, 0, contents
);
1458 if (bfd_link_relocatable (info
))
1461 address
= rel
->r_offset
;
1463 /* Then, process normally. */
1466 case R_BFIN_GNU_VTINHERIT
:
1467 case R_BFIN_GNU_VTENTRY
:
1468 return bfd_reloc_ok
;
1471 /* Relocation is to the address of the entry for this symbol
1472 in the global offset table. */
1474 && strcmp (h
->root
.root
.string
, "__GLOBAL_OFFSET_TABLE_") == 0)
1477 /* Relocation is the offset of the entry for this symbol in
1478 the global offset table. */
1485 /* Create the .got section. */
1486 elf_hash_table (info
)->dynobj
= dynobj
= output_bfd
;
1487 if (!_bfd_elf_create_got_section (dynobj
, info
))
1493 sgot
= bfd_get_linker_section (dynobj
, ".got");
1494 BFD_ASSERT (sgot
!= NULL
);
1501 off
= h
->got
.offset
;
1502 BFD_ASSERT (off
!= (bfd_vma
) - 1);
1503 dyn
= elf_hash_table (info
)->dynamic_sections_created
;
1505 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
1506 bfd_link_pic (info
),
1508 || (bfd_link_pic (info
)
1514 /* This is actually a static link, or it is a
1515 -Bsymbolic link and the symbol is defined
1516 locally, or the symbol was forced to be local
1517 because of a version file.. We must initialize
1518 this entry in the global offset table. Since
1519 the offset must always be a multiple of 4, we
1520 use the least significant bit to record whether
1521 we have initialized it already.
1523 When doing a dynamic link, we create a .rela.got
1524 relocation entry to initialize the value. This
1525 is done in the finish_dynamic_symbol routine. */
1530 bfd_put_32 (output_bfd
, relocation
,
1531 sgot
->contents
+ off
);
1536 unresolved_reloc
= FALSE
;
1540 BFD_ASSERT (local_got_offsets
!= NULL
);
1541 off
= local_got_offsets
[r_symndx
];
1542 BFD_ASSERT (off
!= (bfd_vma
) - 1);
1544 /* The offset must always be a multiple of 4. We use
1545 the least significant bit to record whether we have
1546 already generated the necessary reloc. */
1551 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
1553 if (bfd_link_pic (info
))
1556 Elf_Internal_Rela outrel
;
1559 s
= bfd_get_linker_section (dynobj
, ".rela.got");
1560 BFD_ASSERT (s
!= NULL
);
1562 outrel
.r_offset
= (sgot
->output_section
->vma
1563 + sgot
->output_offset
+ off
);
1565 ELF32_R_INFO (0, R_BFIN_PCREL24
);
1566 outrel
.r_addend
= relocation
;
1569 s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
1570 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
1573 local_got_offsets
[r_symndx
] |= 1;
1577 relocation
= sgot
->output_offset
+ off
;
1579 /* bfin : preg = [preg + 17bitdiv4offset] relocation is div by 4. */
1586 r
= bfin_final_link_relocate (rel
, howto
, input_bfd
, input_section
,
1588 relocation
, rel
->r_addend
);
1593 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
1594 because such sections are not SEC_ALLOC and thus ld.so will
1595 not process them. */
1596 if (unresolved_reloc
1597 && !((input_section
->flags
& SEC_DEBUGGING
) != 0 && h
->def_dynamic
)
1598 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
1599 rel
->r_offset
) != (bfd_vma
) -1)
1601 (*_bfd_error_handler
)
1602 (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"),
1604 input_section
, (long) rel
->r_offset
, h
->root
.root
.string
);
1608 if (r
!= bfd_reloc_ok
)
1613 name
= h
->root
.root
.string
;
1616 name
= bfd_elf_string_from_elf_section (input_bfd
,
1617 symtab_hdr
->sh_link
,
1622 name
= bfd_section_name (input_bfd
, sec
);
1625 if (r
== bfd_reloc_overflow
)
1627 if (!(info
->callbacks
->reloc_overflow
1628 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
1629 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
)))
1634 (*_bfd_error_handler
)
1635 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
1636 input_bfd
, input_section
,
1637 (long) rel
->r_offset
, name
, (int) r
);
1647 bfin_gc_mark_hook (asection
* sec
,
1648 struct bfd_link_info
*info
,
1649 Elf_Internal_Rela
* rel
,
1650 struct elf_link_hash_entry
*h
,
1651 Elf_Internal_Sym
* sym
)
1654 switch (ELF32_R_TYPE (rel
->r_info
))
1656 case R_BFIN_GNU_VTINHERIT
:
1657 case R_BFIN_GNU_VTENTRY
:
1661 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
1664 /* Update the got entry reference counts for the section being removed. */
1667 bfin_gc_sweep_hook (bfd
* abfd
,
1668 struct bfd_link_info
*info
,
1670 const Elf_Internal_Rela
* relocs
)
1672 Elf_Internal_Shdr
*symtab_hdr
;
1673 struct elf_link_hash_entry
**sym_hashes
;
1674 bfd_signed_vma
*local_got_refcounts
;
1675 const Elf_Internal_Rela
*rel
, *relend
;
1680 dynobj
= elf_hash_table (info
)->dynobj
;
1684 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1685 sym_hashes
= elf_sym_hashes (abfd
);
1686 local_got_refcounts
= elf_local_got_refcounts (abfd
);
1688 sgot
= bfd_get_linker_section (dynobj
, ".got");
1689 srelgot
= bfd_get_linker_section (dynobj
, ".rela.got");
1691 relend
= relocs
+ sec
->reloc_count
;
1692 for (rel
= relocs
; rel
< relend
; rel
++)
1694 unsigned long r_symndx
;
1695 struct elf_link_hash_entry
*h
;
1697 switch (ELF32_R_TYPE (rel
->r_info
))
1700 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1701 if (r_symndx
>= symtab_hdr
->sh_info
)
1703 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1704 if (h
->got
.refcount
> 0)
1707 if (h
->got
.refcount
== 0)
1709 /* We don't need the .got entry any more. */
1711 srelgot
->size
-= sizeof (Elf32_External_Rela
);
1715 else if (local_got_refcounts
!= NULL
)
1717 if (local_got_refcounts
[r_symndx
] > 0)
1719 --local_got_refcounts
[r_symndx
];
1720 if (local_got_refcounts
[r_symndx
] == 0)
1722 /* We don't need the .got entry any more. */
1724 if (bfd_link_pic (info
))
1725 srelgot
->size
-= sizeof (Elf32_External_Rela
);
1737 extern const bfd_target bfin_elf32_fdpic_vec
;
1738 #define IS_FDPIC(bfd) ((bfd)->xvec == &bfin_elf32_fdpic_vec)
1740 /* An extension of the elf hash table data structure,
1741 containing some additional Blackfin-specific data. */
1742 struct bfinfdpic_elf_link_hash_table
1744 struct elf_link_hash_table elf
;
1746 /* A pointer to the .got section. */
1748 /* A pointer to the .rel.got section. */
1750 /* A pointer to the .rofixup section. */
1751 asection
*sgotfixup
;
1752 /* A pointer to the .plt section. */
1754 /* A pointer to the .rel.plt section. */
1756 /* GOT base offset. */
1758 /* Location of the first non-lazy PLT entry, i.e., the number of
1759 bytes taken by lazy PLT entries. */
1761 /* A hash table holding information about which symbols were
1762 referenced with which PIC-related relocations. */
1763 struct htab
*relocs_info
;
1764 /* Summary reloc information collected by
1765 _bfinfdpic_count_got_plt_entries. */
1766 struct _bfinfdpic_dynamic_got_info
*g
;
1769 /* Get the Blackfin ELF linker hash table from a link_info structure. */
1771 #define bfinfdpic_hash_table(info) \
1772 (elf_hash_table_id ((struct elf_link_hash_table *) ((info)->hash)) \
1773 == BFIN_ELF_DATA ? ((struct bfinfdpic_elf_link_hash_table *) ((info)->hash)) : NULL)
1775 #define bfinfdpic_got_section(info) \
1776 (bfinfdpic_hash_table (info)->sgot)
1777 #define bfinfdpic_gotrel_section(info) \
1778 (bfinfdpic_hash_table (info)->sgotrel)
1779 #define bfinfdpic_gotfixup_section(info) \
1780 (bfinfdpic_hash_table (info)->sgotfixup)
1781 #define bfinfdpic_plt_section(info) \
1782 (bfinfdpic_hash_table (info)->splt)
1783 #define bfinfdpic_pltrel_section(info) \
1784 (bfinfdpic_hash_table (info)->spltrel)
1785 #define bfinfdpic_relocs_info(info) \
1786 (bfinfdpic_hash_table (info)->relocs_info)
1787 #define bfinfdpic_got_initial_offset(info) \
1788 (bfinfdpic_hash_table (info)->got0)
1789 #define bfinfdpic_plt_initial_offset(info) \
1790 (bfinfdpic_hash_table (info)->plt0)
1791 #define bfinfdpic_dynamic_got_plt_info(info) \
1792 (bfinfdpic_hash_table (info)->g)
1794 /* The name of the dynamic interpreter. This is put in the .interp
1797 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
1799 #define DEFAULT_STACK_SIZE 0x20000
1801 /* This structure is used to collect the number of entries present in
1802 each addressable range of the got. */
1803 struct _bfinfdpic_dynamic_got_info
1805 /* Several bits of information about the current link. */
1806 struct bfd_link_info
*info
;
1807 /* Total size needed for GOT entries within the 18- or 32-bit
1809 bfd_vma got17m4
, gothilo
;
1810 /* Total size needed for function descriptor entries within the 18-
1811 or 32-bit ranges. */
1812 bfd_vma fd17m4
, fdhilo
;
1813 /* Total size needed function descriptor entries referenced in PLT
1814 entries, that would be profitable to place in offsets close to
1815 the PIC register. */
1817 /* Total size needed by lazy PLT entries. */
1819 /* Number of relocations carried over from input object files. */
1820 unsigned long relocs
;
1821 /* Number of fixups introduced by relocations in input object files. */
1822 unsigned long fixups
;
1825 /* Create a Blackfin ELF linker hash table. */
1827 static struct bfd_link_hash_table
*
1828 bfinfdpic_elf_link_hash_table_create (bfd
*abfd
)
1830 struct bfinfdpic_elf_link_hash_table
*ret
;
1831 bfd_size_type amt
= sizeof (struct bfinfdpic_elf_link_hash_table
);
1833 ret
= bfd_zmalloc (amt
);
1837 if (!_bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
1838 _bfd_elf_link_hash_newfunc
,
1839 sizeof (struct elf_link_hash_entry
),
1846 return &ret
->elf
.root
;
1849 /* Decide whether a reference to a symbol can be resolved locally or
1850 not. If the symbol is protected, we want the local address, but
1851 its function descriptor must be assigned by the dynamic linker. */
1852 #define BFINFDPIC_SYM_LOCAL(INFO, H) \
1853 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \
1854 || ! elf_hash_table (INFO)->dynamic_sections_created)
1855 #define BFINFDPIC_FUNCDESC_LOCAL(INFO, H) \
1856 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created)
1858 /* This structure collects information on what kind of GOT, PLT or
1859 function descriptors are required by relocations that reference a
1861 struct bfinfdpic_relocs_info
1863 /* The index of the symbol, as stored in the relocation r_info, if
1864 we have a local symbol; -1 otherwise. */
1868 /* The input bfd in which the symbol is defined, if it's a local
1871 /* If symndx == -1, the hash table entry corresponding to a global
1872 symbol (even if it turns out to bind locally, in which case it
1873 should ideally be replaced with section's symndx + addend). */
1874 struct elf_link_hash_entry
*h
;
1876 /* The addend of the relocation that references the symbol. */
1879 /* The fields above are used to identify an entry. The fields below
1880 contain information on how an entry is used and, later on, which
1881 locations it was assigned. */
1882 /* The following 2 fields record whether the symbol+addend above was
1883 ever referenced with a GOT relocation. The 17M4 suffix indicates a
1884 GOT17M4 relocation; hilo is used for GOTLO/GOTHI pairs. */
1887 /* Whether a FUNCDESC relocation references symbol+addend. */
1889 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */
1892 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */
1893 unsigned fdgoff17m4
;
1894 unsigned fdgoffhilo
;
1895 /* Whether symbol+addend is referenced with GOTOFF17M4, GOTOFFLO or
1896 GOTOFFHI relocations. The addend doesn't really matter, since we
1897 envision that this will only be used to check whether the symbol
1898 is mapped to the same segment as the got. */
1900 /* Whether symbol+addend is referenced by a LABEL24 relocation. */
1902 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE
1905 /* Whether we need a PLT entry for a symbol. Should be implied by
1907 (call && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)) */
1909 /* Whether a function descriptor should be created in this link unit
1910 for symbol+addend. Should be implied by something like:
1911 (plt || fdgotoff17m4 || fdgotofflohi
1912 || ((fd || fdgot17m4 || fdgothilo)
1913 && (symndx != -1 || BFINFDPIC_FUNCDESC_LOCAL (info, d.h)))) */
1915 /* Whether a lazy PLT entry is needed for this symbol+addend.
1916 Should be implied by something like:
1917 (privfd && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)
1918 && ! (info->flags & DF_BIND_NOW)) */
1920 /* Whether we've already emitted GOT relocations and PLT entries as
1921 needed for this symbol. */
1924 /* The number of R_BFIN_BYTE4_DATA, R_BFIN_FUNCDESC and R_BFIN_FUNCDESC_VALUE
1925 relocations referencing the symbol. */
1926 unsigned relocs32
, relocsfd
, relocsfdv
;
1928 /* The number of .rofixups entries and dynamic relocations allocated
1929 for this symbol, minus any that might have already been used. */
1930 unsigned fixups
, dynrelocs
;
1932 /* The offsets of the GOT entries assigned to symbol+addend, to the
1933 function descriptor's address, and to a function descriptor,
1934 respectively. Should be zero if unassigned. The offsets are
1935 counted from the value that will be assigned to the PIC register,
1936 not from the beginning of the .got section. */
1937 bfd_signed_vma got_entry
, fdgot_entry
, fd_entry
;
1938 /* The offsets of the PLT entries assigned to symbol+addend,
1939 non-lazy and lazy, respectively. If unassigned, should be
1941 bfd_vma plt_entry
, lzplt_entry
;
1944 /* Compute a hash with the key fields of an bfinfdpic_relocs_info entry. */
1946 bfinfdpic_relocs_info_hash (const void *entry_
)
1948 const struct bfinfdpic_relocs_info
*entry
= entry_
;
1950 return (entry
->symndx
== -1
1951 ? (long) entry
->d
.h
->root
.root
.hash
1952 : entry
->symndx
+ (long) entry
->d
.abfd
->id
* 257) + entry
->addend
;
1955 /* Test whether the key fields of two bfinfdpic_relocs_info entries are
1958 bfinfdpic_relocs_info_eq (const void *entry1
, const void *entry2
)
1960 const struct bfinfdpic_relocs_info
*e1
= entry1
;
1961 const struct bfinfdpic_relocs_info
*e2
= entry2
;
1963 return e1
->symndx
== e2
->symndx
&& e1
->addend
== e2
->addend
1964 && (e1
->symndx
== -1 ? e1
->d
.h
== e2
->d
.h
: e1
->d
.abfd
== e2
->d
.abfd
);
1967 /* Find or create an entry in a hash table HT that matches the key
1968 fields of the given ENTRY. If it's not found, memory for a new
1969 entry is allocated in ABFD's obstack. */
1970 static struct bfinfdpic_relocs_info
*
1971 bfinfdpic_relocs_info_find (struct htab
*ht
,
1973 const struct bfinfdpic_relocs_info
*entry
,
1974 enum insert_option insert
)
1976 struct bfinfdpic_relocs_info
**loc
;
1981 loc
= (struct bfinfdpic_relocs_info
**) htab_find_slot (ht
, entry
, insert
);
1989 *loc
= bfd_zalloc (abfd
, sizeof (**loc
));
1994 (*loc
)->symndx
= entry
->symndx
;
1995 (*loc
)->d
= entry
->d
;
1996 (*loc
)->addend
= entry
->addend
;
1997 (*loc
)->plt_entry
= (bfd_vma
)-1;
1998 (*loc
)->lzplt_entry
= (bfd_vma
)-1;
2003 /* Obtain the address of the entry in HT associated with H's symbol +
2004 addend, creating a new entry if none existed. ABFD is only used
2005 for memory allocation purposes. */
2006 inline static struct bfinfdpic_relocs_info
*
2007 bfinfdpic_relocs_info_for_global (struct htab
*ht
,
2009 struct elf_link_hash_entry
*h
,
2011 enum insert_option insert
)
2013 struct bfinfdpic_relocs_info entry
;
2017 entry
.addend
= addend
;
2019 return bfinfdpic_relocs_info_find (ht
, abfd
, &entry
, insert
);
2022 /* Obtain the address of the entry in HT associated with the SYMNDXth
2023 local symbol of the input bfd ABFD, plus the addend, creating a new
2024 entry if none existed. */
2025 inline static struct bfinfdpic_relocs_info
*
2026 bfinfdpic_relocs_info_for_local (struct htab
*ht
,
2030 enum insert_option insert
)
2032 struct bfinfdpic_relocs_info entry
;
2034 entry
.symndx
= symndx
;
2035 entry
.d
.abfd
= abfd
;
2036 entry
.addend
= addend
;
2038 return bfinfdpic_relocs_info_find (ht
, abfd
, &entry
, insert
);
2041 /* Merge fields set by check_relocs() of two entries that end up being
2042 mapped to the same (presumably global) symbol. */
2045 bfinfdpic_pic_merge_early_relocs_info (struct bfinfdpic_relocs_info
*e2
,
2046 struct bfinfdpic_relocs_info
const *e1
)
2048 e2
->got17m4
|= e1
->got17m4
;
2049 e2
->gothilo
|= e1
->gothilo
;
2051 e2
->fdgot17m4
|= e1
->fdgot17m4
;
2052 e2
->fdgothilo
|= e1
->fdgothilo
;
2053 e2
->fdgoff17m4
|= e1
->fdgoff17m4
;
2054 e2
->fdgoffhilo
|= e1
->fdgoffhilo
;
2055 e2
->gotoff
|= e1
->gotoff
;
2056 e2
->call
|= e1
->call
;
2060 /* Every block of 65535 lazy PLT entries shares a single call to the
2061 resolver, inserted in the 32768th lazy PLT entry (i.e., entry #
2062 32767, counting from 0). All other lazy PLT entries branch to it
2063 in a single instruction. */
2065 #define LZPLT_RESOLVER_EXTRA 10
2066 #define LZPLT_NORMAL_SIZE 6
2067 #define LZPLT_ENTRIES 1362
2069 #define BFINFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) LZPLT_NORMAL_SIZE * LZPLT_ENTRIES + LZPLT_RESOLVER_EXTRA)
2070 #define BFINFDPIC_LZPLT_RESOLV_LOC (LZPLT_NORMAL_SIZE * LZPLT_ENTRIES / 2)
2072 /* Add a dynamic relocation to the SRELOC section. */
2074 inline static bfd_vma
2075 _bfinfdpic_add_dyn_reloc (bfd
*output_bfd
, asection
*sreloc
, bfd_vma offset
,
2076 int reloc_type
, long dynindx
, bfd_vma addend
,
2077 struct bfinfdpic_relocs_info
*entry
)
2079 Elf_Internal_Rela outrel
;
2080 bfd_vma reloc_offset
;
2082 outrel
.r_offset
= offset
;
2083 outrel
.r_info
= ELF32_R_INFO (dynindx
, reloc_type
);
2084 outrel
.r_addend
= addend
;
2086 reloc_offset
= sreloc
->reloc_count
* sizeof (Elf32_External_Rel
);
2087 BFD_ASSERT (reloc_offset
< sreloc
->size
);
2088 bfd_elf32_swap_reloc_out (output_bfd
, &outrel
,
2089 sreloc
->contents
+ reloc_offset
);
2090 sreloc
->reloc_count
++;
2092 /* If the entry's index is zero, this relocation was probably to a
2093 linkonce section that got discarded. We reserved a dynamic
2094 relocation, but it was for another entry than the one we got at
2095 the time of emitting the relocation. Unfortunately there's no
2096 simple way for us to catch this situation, since the relocation
2097 is cleared right before calling relocate_section, at which point
2098 we no longer know what the relocation used to point to. */
2101 BFD_ASSERT (entry
->dynrelocs
> 0);
2105 return reloc_offset
;
2108 /* Add a fixup to the ROFIXUP section. */
2111 _bfinfdpic_add_rofixup (bfd
*output_bfd
, asection
*rofixup
, bfd_vma offset
,
2112 struct bfinfdpic_relocs_info
*entry
)
2114 bfd_vma fixup_offset
;
2116 if (rofixup
->flags
& SEC_EXCLUDE
)
2119 fixup_offset
= rofixup
->reloc_count
* 4;
2120 if (rofixup
->contents
)
2122 BFD_ASSERT (fixup_offset
< rofixup
->size
);
2123 bfd_put_32 (output_bfd
, offset
, rofixup
->contents
+ fixup_offset
);
2125 rofixup
->reloc_count
++;
2127 if (entry
&& entry
->symndx
)
2129 /* See discussion about symndx == 0 in _bfinfdpic_add_dyn_reloc
2131 BFD_ASSERT (entry
->fixups
> 0);
2135 return fixup_offset
;
2138 /* Find the segment number in which OSEC, and output section, is
2142 _bfinfdpic_osec_to_segment (bfd
*output_bfd
, asection
*osec
)
2144 Elf_Internal_Phdr
*p
= _bfd_elf_find_segment_containing_section (output_bfd
, osec
);
2146 return (p
!= NULL
) ? p
- elf_tdata (output_bfd
)->phdr
: -1;
2149 inline static bfd_boolean
2150 _bfinfdpic_osec_readonly_p (bfd
*output_bfd
, asection
*osec
)
2152 unsigned seg
= _bfinfdpic_osec_to_segment (output_bfd
, osec
);
2154 return ! (elf_tdata (output_bfd
)->phdr
[seg
].p_flags
& PF_W
);
2157 /* Generate relocations for GOT entries, function descriptors, and
2158 code for PLT and lazy PLT entries. */
2160 inline static bfd_boolean
2161 _bfinfdpic_emit_got_relocs_plt_entries (struct bfinfdpic_relocs_info
*entry
,
2163 struct bfd_link_info
*info
,
2165 Elf_Internal_Sym
*sym
,
2168 bfd_vma fd_lazy_rel_offset
= (bfd_vma
) -1;
2175 if (entry
->got_entry
|| entry
->fdgot_entry
|| entry
->fd_entry
)
2177 /* If the symbol is dynamic, consider it for dynamic
2178 relocations, otherwise decay to section + offset. */
2179 if (entry
->symndx
== -1 && entry
->d
.h
->dynindx
!= -1)
2180 dynindx
= entry
->d
.h
->dynindx
;
2184 && sec
->output_section
2185 && ! bfd_is_abs_section (sec
->output_section
)
2186 && ! bfd_is_und_section (sec
->output_section
))
2187 dynindx
= elf_section_data (sec
->output_section
)->dynindx
;
2193 /* Generate relocation for GOT entry pointing to the symbol. */
2194 if (entry
->got_entry
)
2197 bfd_vma ad
= addend
;
2199 /* If the symbol is dynamic but binds locally, use
2201 if (sec
&& (entry
->symndx
!= -1
2202 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2204 if (entry
->symndx
== -1)
2205 ad
+= entry
->d
.h
->root
.u
.def
.value
;
2207 ad
+= sym
->st_value
;
2208 ad
+= sec
->output_offset
;
2209 if (sec
->output_section
&& elf_section_data (sec
->output_section
))
2210 idx
= elf_section_data (sec
->output_section
)->dynindx
;
2215 /* If we're linking an executable at a fixed address, we can
2216 omit the dynamic relocation as long as the symbol is local to
2218 if (bfd_link_executable (info
) && !bfd_link_pic (info
)
2219 && (entry
->symndx
!= -1
2220 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2223 ad
+= sec
->output_section
->vma
;
2224 if (entry
->symndx
!= -1
2225 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
2226 _bfinfdpic_add_rofixup (output_bfd
,
2227 bfinfdpic_gotfixup_section (info
),
2228 bfinfdpic_got_section (info
)->output_section
2230 + bfinfdpic_got_section (info
)->output_offset
2231 + bfinfdpic_got_initial_offset (info
)
2232 + entry
->got_entry
, entry
);
2235 _bfinfdpic_add_dyn_reloc (output_bfd
, bfinfdpic_gotrel_section (info
),
2236 _bfd_elf_section_offset
2238 bfinfdpic_got_section (info
),
2239 bfinfdpic_got_initial_offset (info
)
2241 + bfinfdpic_got_section (info
)
2242 ->output_section
->vma
2243 + bfinfdpic_got_section (info
)->output_offset
,
2244 R_BFIN_BYTE4_DATA
, idx
, ad
, entry
);
2246 bfd_put_32 (output_bfd
, ad
,
2247 bfinfdpic_got_section (info
)->contents
2248 + bfinfdpic_got_initial_offset (info
)
2249 + entry
->got_entry
);
2252 /* Generate relocation for GOT entry pointing to a canonical
2253 function descriptor. */
2254 if (entry
->fdgot_entry
)
2259 if (! (entry
->symndx
== -1
2260 && entry
->d
.h
->root
.type
== bfd_link_hash_undefweak
2261 && BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2263 /* If the symbol is dynamic and there may be dynamic symbol
2264 resolution because we are, or are linked with, a shared
2265 library, emit a FUNCDESC relocation such that the dynamic
2266 linker will allocate the function descriptor. If the
2267 symbol needs a non-local function descriptor but binds
2268 locally (e.g., its visibility is protected, emit a
2269 dynamic relocation decayed to section+offset. */
2270 if (entry
->symndx
== -1
2271 && ! BFINFDPIC_FUNCDESC_LOCAL (info
, entry
->d
.h
)
2272 && BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)
2273 && !(bfd_link_executable (info
) && !bfd_link_pic (info
)))
2275 reloc
= R_BFIN_FUNCDESC
;
2276 idx
= elf_section_data (entry
->d
.h
->root
.u
.def
.section
2277 ->output_section
)->dynindx
;
2278 ad
= entry
->d
.h
->root
.u
.def
.section
->output_offset
2279 + entry
->d
.h
->root
.u
.def
.value
;
2281 else if (entry
->symndx
== -1
2282 && ! BFINFDPIC_FUNCDESC_LOCAL (info
, entry
->d
.h
))
2284 reloc
= R_BFIN_FUNCDESC
;
2292 /* Otherwise, we know we have a private function descriptor,
2293 so reference it directly. */
2294 if (elf_hash_table (info
)->dynamic_sections_created
)
2295 BFD_ASSERT (entry
->privfd
);
2296 reloc
= R_BFIN_BYTE4_DATA
;
2297 idx
= elf_section_data (bfinfdpic_got_section (info
)
2298 ->output_section
)->dynindx
;
2299 ad
= bfinfdpic_got_section (info
)->output_offset
2300 + bfinfdpic_got_initial_offset (info
) + entry
->fd_entry
;
2303 /* If there is room for dynamic symbol resolution, emit the
2304 dynamic relocation. However, if we're linking an
2305 executable at a fixed location, we won't have emitted a
2306 dynamic symbol entry for the got section, so idx will be
2307 zero, which means we can and should compute the address
2308 of the private descriptor ourselves. */
2309 if (bfd_link_executable (info
) && !bfd_link_pic (info
)
2310 && (entry
->symndx
!= -1
2311 || BFINFDPIC_FUNCDESC_LOCAL (info
, entry
->d
.h
)))
2313 ad
+= bfinfdpic_got_section (info
)->output_section
->vma
;
2314 _bfinfdpic_add_rofixup (output_bfd
,
2315 bfinfdpic_gotfixup_section (info
),
2316 bfinfdpic_got_section (info
)
2317 ->output_section
->vma
2318 + bfinfdpic_got_section (info
)
2320 + bfinfdpic_got_initial_offset (info
)
2321 + entry
->fdgot_entry
, entry
);
2324 _bfinfdpic_add_dyn_reloc (output_bfd
,
2325 bfinfdpic_gotrel_section (info
),
2326 _bfd_elf_section_offset
2328 bfinfdpic_got_section (info
),
2329 bfinfdpic_got_initial_offset (info
)
2330 + entry
->fdgot_entry
)
2331 + bfinfdpic_got_section (info
)
2332 ->output_section
->vma
2333 + bfinfdpic_got_section (info
)
2335 reloc
, idx
, ad
, entry
);
2338 bfd_put_32 (output_bfd
, ad
,
2339 bfinfdpic_got_section (info
)->contents
2340 + bfinfdpic_got_initial_offset (info
)
2341 + entry
->fdgot_entry
);
2344 /* Generate relocation to fill in a private function descriptor in
2346 if (entry
->fd_entry
)
2349 bfd_vma ad
= addend
;
2351 long lowword
, highword
;
2353 /* If the symbol is dynamic but binds locally, use
2355 if (sec
&& (entry
->symndx
!= -1
2356 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2358 if (entry
->symndx
== -1)
2359 ad
+= entry
->d
.h
->root
.u
.def
.value
;
2361 ad
+= sym
->st_value
;
2362 ad
+= sec
->output_offset
;
2363 if (sec
->output_section
&& elf_section_data (sec
->output_section
))
2364 idx
= elf_section_data (sec
->output_section
)->dynindx
;
2369 /* If we're linking an executable at a fixed address, we can
2370 omit the dynamic relocation as long as the symbol is local to
2372 if (bfd_link_executable (info
) && !bfd_link_pic (info
)
2373 && (entry
->symndx
!= -1 || BFINFDPIC_SYM_LOCAL (info
, entry
->d
.h
)))
2376 ad
+= sec
->output_section
->vma
;
2378 if (entry
->symndx
!= -1
2379 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
2381 _bfinfdpic_add_rofixup (output_bfd
,
2382 bfinfdpic_gotfixup_section (info
),
2383 bfinfdpic_got_section (info
)
2384 ->output_section
->vma
2385 + bfinfdpic_got_section (info
)
2387 + bfinfdpic_got_initial_offset (info
)
2388 + entry
->fd_entry
, entry
);
2389 _bfinfdpic_add_rofixup (output_bfd
,
2390 bfinfdpic_gotfixup_section (info
),
2391 bfinfdpic_got_section (info
)
2392 ->output_section
->vma
2393 + bfinfdpic_got_section (info
)
2395 + bfinfdpic_got_initial_offset (info
)
2396 + entry
->fd_entry
+ 4, entry
);
2402 = _bfinfdpic_add_dyn_reloc (output_bfd
,
2404 ? bfinfdpic_pltrel_section (info
)
2405 : bfinfdpic_gotrel_section (info
),
2406 _bfd_elf_section_offset
2408 bfinfdpic_got_section (info
),
2409 bfinfdpic_got_initial_offset (info
)
2411 + bfinfdpic_got_section (info
)
2412 ->output_section
->vma
2413 + bfinfdpic_got_section (info
)
2415 R_BFIN_FUNCDESC_VALUE
, idx
, ad
, entry
);
2418 /* If we've omitted the dynamic relocation, just emit the fixed
2419 addresses of the symbol and of the local GOT base offset. */
2420 if (bfd_link_executable (info
)
2421 && !bfd_link_pic (info
)
2423 && sec
->output_section
)
2426 highword
= bfinfdpic_got_section (info
)->output_section
->vma
2427 + bfinfdpic_got_section (info
)->output_offset
2428 + bfinfdpic_got_initial_offset (info
);
2430 else if (entry
->lazyplt
)
2435 fd_lazy_rel_offset
= ofst
;
2437 /* A function descriptor used for lazy or local resolving is
2438 initialized such that its high word contains the output
2439 section index in which the PLT entries are located, and
2440 the low word contains the address of the lazy PLT entry
2441 entry point, that must be within the memory region
2442 assigned to that section. */
2443 lowword
= entry
->lzplt_entry
+ 4
2444 + bfinfdpic_plt_section (info
)->output_offset
2445 + bfinfdpic_plt_section (info
)->output_section
->vma
;
2446 highword
= _bfinfdpic_osec_to_segment
2447 (output_bfd
, bfinfdpic_plt_section (info
)->output_section
);
2451 /* A function descriptor for a local function gets the index
2452 of the section. For a non-local function, it's
2456 || (entry
->symndx
== -1 && entry
->d
.h
->dynindx
!= -1
2457 && entry
->d
.h
->dynindx
== idx
))
2460 highword
= _bfinfdpic_osec_to_segment
2461 (output_bfd
, sec
->output_section
);
2464 bfd_put_32 (output_bfd
, lowword
,
2465 bfinfdpic_got_section (info
)->contents
2466 + bfinfdpic_got_initial_offset (info
)
2468 bfd_put_32 (output_bfd
, highword
,
2469 bfinfdpic_got_section (info
)->contents
2470 + bfinfdpic_got_initial_offset (info
)
2471 + entry
->fd_entry
+ 4);
2474 /* Generate code for the PLT entry. */
2475 if (entry
->plt_entry
!= (bfd_vma
) -1)
2477 bfd_byte
*plt_code
= bfinfdpic_plt_section (info
)->contents
2480 BFD_ASSERT (entry
->fd_entry
);
2482 /* Figure out what kind of PLT entry we need, depending on the
2483 location of the function descriptor within the GOT. */
2484 if (entry
->fd_entry
>= -(1 << (18 - 1))
2485 && entry
->fd_entry
+ 4 < (1 << (18 - 1)))
2487 /* P1 = [P3 + fd_entry]; P3 = [P3 + fd_entry + 4] */
2488 bfd_put_32 (output_bfd
,
2489 0xe519 | ((entry
->fd_entry
<< 14) & 0xFFFF0000),
2491 bfd_put_32 (output_bfd
,
2492 0xe51b | (((entry
->fd_entry
+ 4) << 14) & 0xFFFF0000),
2498 /* P1.L = fd_entry; P1.H = fd_entry;
2502 bfd_put_32 (output_bfd
,
2503 0xe109 | (entry
->fd_entry
<< 16),
2505 bfd_put_32 (output_bfd
,
2506 0xe149 | (entry
->fd_entry
& 0xFFFF0000),
2508 bfd_put_16 (output_bfd
, 0x5ad9, plt_code
+ 8);
2509 bfd_put_16 (output_bfd
, 0x9159, plt_code
+ 10);
2510 bfd_put_16 (output_bfd
, 0xac5b, plt_code
+ 12);
2514 bfd_put_16 (output_bfd
, 0x0051, plt_code
);
2517 /* Generate code for the lazy PLT entry. */
2518 if (entry
->lzplt_entry
!= (bfd_vma
) -1)
2520 bfd_byte
*lzplt_code
= bfinfdpic_plt_section (info
)->contents
2521 + entry
->lzplt_entry
;
2522 bfd_vma resolverStub_addr
;
2524 bfd_put_32 (output_bfd
, fd_lazy_rel_offset
, lzplt_code
);
2527 resolverStub_addr
= entry
->lzplt_entry
/ BFINFDPIC_LZPLT_BLOCK_SIZE
2528 * BFINFDPIC_LZPLT_BLOCK_SIZE
+ BFINFDPIC_LZPLT_RESOLV_LOC
;
2529 if (resolverStub_addr
>= bfinfdpic_plt_initial_offset (info
))
2530 resolverStub_addr
= bfinfdpic_plt_initial_offset (info
) - LZPLT_NORMAL_SIZE
- LZPLT_RESOLVER_EXTRA
;
2532 if (entry
->lzplt_entry
== resolverStub_addr
)
2534 /* This is a lazy PLT entry that includes a resolver call.
2538 bfd_put_32 (output_bfd
,
2541 bfd_put_16 (output_bfd
, 0x0052, lzplt_code
+ 4);
2545 /* JUMP.S resolverStub */
2546 bfd_put_16 (output_bfd
,
2548 | (((resolverStub_addr
- entry
->lzplt_entry
)
2549 / 2) & (((bfd_vma
)1 << 12) - 1)),
2557 /* Relocate an Blackfin ELF section.
2559 The RELOCATE_SECTION function is called by the new ELF backend linker
2560 to handle the relocations for a section.
2562 The relocs are always passed as Rela structures; if the section
2563 actually uses Rel structures, the r_addend field will always be
2566 This function is responsible for adjusting the section contents as
2567 necessary, and (if using Rela relocs and generating a relocatable
2568 output file) adjusting the reloc addend as necessary.
2570 This function does not have to worry about setting the reloc
2571 address or the reloc symbol index.
2573 LOCAL_SYMS is a pointer to the swapped in local symbols.
2575 LOCAL_SECTIONS is an array giving the section in the input file
2576 corresponding to the st_shndx field of each local symbol.
2578 The global hash table entry for the global symbols can be found
2579 via elf_sym_hashes (input_bfd).
2581 When generating relocatable output, this function must handle
2582 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2583 going to be the section symbol corresponding to the output
2584 section, which means that the addend must be adjusted
2588 bfinfdpic_relocate_section (bfd
* output_bfd
,
2589 struct bfd_link_info
*info
,
2591 asection
* input_section
,
2592 bfd_byte
* contents
,
2593 Elf_Internal_Rela
* relocs
,
2594 Elf_Internal_Sym
* local_syms
,
2595 asection
** local_sections
)
2597 Elf_Internal_Shdr
*symtab_hdr
;
2598 struct elf_link_hash_entry
**sym_hashes
;
2599 Elf_Internal_Rela
*rel
;
2600 Elf_Internal_Rela
*relend
;
2601 unsigned isec_segment
, got_segment
, plt_segment
,
2603 int silence_segment_error
= !bfd_link_pic (info
);
2605 symtab_hdr
= & elf_tdata (input_bfd
)->symtab_hdr
;
2606 sym_hashes
= elf_sym_hashes (input_bfd
);
2607 relend
= relocs
+ input_section
->reloc_count
;
2609 isec_segment
= _bfinfdpic_osec_to_segment (output_bfd
,
2610 input_section
->output_section
);
2611 if (IS_FDPIC (output_bfd
) && bfinfdpic_got_section (info
))
2612 got_segment
= _bfinfdpic_osec_to_segment (output_bfd
,
2613 bfinfdpic_got_section (info
)
2617 if (IS_FDPIC (output_bfd
) && elf_hash_table (info
)->dynamic_sections_created
)
2618 plt_segment
= _bfinfdpic_osec_to_segment (output_bfd
,
2619 bfinfdpic_plt_section (info
)
2624 for (rel
= relocs
; rel
< relend
; rel
++)
2626 reloc_howto_type
*howto
;
2627 unsigned long r_symndx
;
2628 Elf_Internal_Sym
*sym
;
2630 struct elf_link_hash_entry
*h
;
2632 bfd_reloc_status_type r
;
2633 const char * name
= NULL
;
2636 struct bfinfdpic_relocs_info
*picrel
;
2637 bfd_vma orig_addend
= rel
->r_addend
;
2639 r_type
= ELF32_R_TYPE (rel
->r_info
);
2641 if (r_type
== R_BFIN_GNU_VTINHERIT
2642 || r_type
== R_BFIN_GNU_VTENTRY
)
2645 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2646 howto
= bfin_reloc_type_lookup (input_bfd
, r_type
);
2649 bfd_set_error (bfd_error_bad_value
);
2657 if (r_symndx
< symtab_hdr
->sh_info
)
2659 sym
= local_syms
+ r_symndx
;
2660 osec
= sec
= local_sections
[r_symndx
];
2661 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
2663 name
= bfd_elf_string_from_elf_section
2664 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
2665 name
= (name
== NULL
) ? bfd_section_name (input_bfd
, sec
) : name
;
2669 bfd_boolean warned
, ignored
;
2670 bfd_boolean unresolved_reloc
;
2672 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
2673 r_symndx
, symtab_hdr
, sym_hashes
,
2675 unresolved_reloc
, warned
, ignored
);
2679 if (sec
!= NULL
&& discarded_section (sec
))
2680 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
2681 rel
, 1, relend
, howto
, 0, contents
);
2683 if (bfd_link_relocatable (info
))
2687 && (h
->root
.type
== bfd_link_hash_defined
2688 || h
->root
.type
== bfd_link_hash_defweak
)
2689 && !BFINFDPIC_SYM_LOCAL (info
, h
))
2697 case R_BFIN_PCREL24
:
2698 case R_BFIN_PCREL24_JUMP_L
:
2699 case R_BFIN_BYTE4_DATA
:
2700 if (! IS_FDPIC (output_bfd
))
2703 case R_BFIN_GOT17M4
:
2706 case R_BFIN_FUNCDESC_GOT17M4
:
2707 case R_BFIN_FUNCDESC_GOTHI
:
2708 case R_BFIN_FUNCDESC_GOTLO
:
2709 case R_BFIN_GOTOFF17M4
:
2710 case R_BFIN_GOTOFFHI
:
2711 case R_BFIN_GOTOFFLO
:
2712 case R_BFIN_FUNCDESC_GOTOFF17M4
:
2713 case R_BFIN_FUNCDESC_GOTOFFHI
:
2714 case R_BFIN_FUNCDESC_GOTOFFLO
:
2715 case R_BFIN_FUNCDESC
:
2716 case R_BFIN_FUNCDESC_VALUE
:
2718 picrel
= bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info
2719 (info
), input_bfd
, h
,
2720 orig_addend
, INSERT
);
2722 /* In order to find the entry we created before, we must
2723 use the original addend, not the one that may have been
2724 modified by _bfd_elf_rela_local_sym(). */
2725 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
2726 (info
), input_bfd
, r_symndx
,
2727 orig_addend
, INSERT
);
2731 if (!_bfinfdpic_emit_got_relocs_plt_entries (picrel
, output_bfd
, info
,
2735 (*_bfd_error_handler
)
2736 (_("%B: relocation at `%A+0x%x' references symbol `%s' with nonzero addend"),
2737 input_bfd
, input_section
, rel
->r_offset
, name
);
2747 if (h
&& ! BFINFDPIC_SYM_LOCAL (info
, h
)
2748 && _bfd_elf_section_offset (output_bfd
, info
, input_section
,
2749 rel
->r_offset
) != (bfd_vma
) -1)
2751 info
->callbacks
->warning
2752 (info
, _("relocation references symbol not defined in the module"),
2753 name
, input_bfd
, input_section
, rel
->r_offset
);
2761 case R_BFIN_PCREL24
:
2762 case R_BFIN_PCREL24_JUMP_L
:
2763 check_segment
[0] = isec_segment
;
2764 if (! IS_FDPIC (output_bfd
))
2765 check_segment
[1] = isec_segment
;
2766 else if (picrel
->plt
)
2768 relocation
= bfinfdpic_plt_section (info
)->output_section
->vma
2769 + bfinfdpic_plt_section (info
)->output_offset
2770 + picrel
->plt_entry
;
2771 check_segment
[1] = plt_segment
;
2773 /* We don't want to warn on calls to undefined weak symbols,
2774 as calls to them must be protected by non-NULL tests
2775 anyway, and unprotected calls would invoke undefined
2777 else if (picrel
->symndx
== -1
2778 && picrel
->d
.h
->root
.type
== bfd_link_hash_undefweak
)
2779 check_segment
[1] = check_segment
[0];
2781 check_segment
[1] = sec
2782 ? _bfinfdpic_osec_to_segment (output_bfd
, sec
->output_section
)
2786 case R_BFIN_GOT17M4
:
2789 relocation
= picrel
->got_entry
;
2790 check_segment
[0] = check_segment
[1] = got_segment
;
2793 case R_BFIN_FUNCDESC_GOT17M4
:
2794 case R_BFIN_FUNCDESC_GOTHI
:
2795 case R_BFIN_FUNCDESC_GOTLO
:
2796 relocation
= picrel
->fdgot_entry
;
2797 check_segment
[0] = check_segment
[1] = got_segment
;
2800 case R_BFIN_GOTOFFHI
:
2801 case R_BFIN_GOTOFF17M4
:
2802 case R_BFIN_GOTOFFLO
:
2803 relocation
-= bfinfdpic_got_section (info
)->output_section
->vma
2804 + bfinfdpic_got_section (info
)->output_offset
2805 + bfinfdpic_got_initial_offset (info
);
2806 check_segment
[0] = got_segment
;
2807 check_segment
[1] = sec
2808 ? _bfinfdpic_osec_to_segment (output_bfd
, sec
->output_section
)
2812 case R_BFIN_FUNCDESC_GOTOFF17M4
:
2813 case R_BFIN_FUNCDESC_GOTOFFHI
:
2814 case R_BFIN_FUNCDESC_GOTOFFLO
:
2815 relocation
= picrel
->fd_entry
;
2816 check_segment
[0] = check_segment
[1] = got_segment
;
2819 case R_BFIN_FUNCDESC
:
2822 bfd_vma addend
= rel
->r_addend
;
2824 if (! (h
&& h
->root
.type
== bfd_link_hash_undefweak
2825 && BFINFDPIC_SYM_LOCAL (info
, h
)))
2827 /* If the symbol is dynamic and there may be dynamic
2828 symbol resolution because we are or are linked with a
2829 shared library, emit a FUNCDESC relocation such that
2830 the dynamic linker will allocate the function
2831 descriptor. If the symbol needs a non-local function
2832 descriptor but binds locally (e.g., its visibility is
2833 protected, emit a dynamic relocation decayed to
2835 if (h
&& ! BFINFDPIC_FUNCDESC_LOCAL (info
, h
)
2836 && BFINFDPIC_SYM_LOCAL (info
, h
)
2837 && !(bfd_link_executable (info
)
2838 && !bfd_link_pic (info
)))
2840 dynindx
= elf_section_data (h
->root
.u
.def
.section
2841 ->output_section
)->dynindx
;
2842 addend
+= h
->root
.u
.def
.section
->output_offset
2843 + h
->root
.u
.def
.value
;
2845 else if (h
&& ! BFINFDPIC_FUNCDESC_LOCAL (info
, h
))
2849 info
->callbacks
->warning
2850 (info
, _("R_BFIN_FUNCDESC references dynamic symbol with nonzero addend"),
2851 name
, input_bfd
, input_section
, rel
->r_offset
);
2854 dynindx
= h
->dynindx
;
2858 /* Otherwise, we know we have a private function
2859 descriptor, so reference it directly. */
2860 BFD_ASSERT (picrel
->privfd
);
2861 r_type
= R_BFIN_BYTE4_DATA
;
2862 dynindx
= elf_section_data (bfinfdpic_got_section (info
)
2863 ->output_section
)->dynindx
;
2864 addend
= bfinfdpic_got_section (info
)->output_offset
2865 + bfinfdpic_got_initial_offset (info
)
2869 /* If there is room for dynamic symbol resolution, emit
2870 the dynamic relocation. However, if we're linking an
2871 executable at a fixed location, we won't have emitted a
2872 dynamic symbol entry for the got section, so idx will
2873 be zero, which means we can and should compute the
2874 address of the private descriptor ourselves. */
2875 if (bfd_link_executable (info
) && !bfd_link_pic (info
)
2876 && (!h
|| BFINFDPIC_FUNCDESC_LOCAL (info
, h
)))
2880 addend
+= bfinfdpic_got_section (info
)->output_section
->vma
;
2881 if ((bfd_get_section_flags (output_bfd
,
2882 input_section
->output_section
)
2883 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
2885 if (_bfinfdpic_osec_readonly_p (output_bfd
,
2889 info
->callbacks
->warning
2891 _("cannot emit fixups in read-only section"),
2892 name
, input_bfd
, input_section
, rel
->r_offset
);
2896 offset
= _bfd_elf_section_offset
2898 input_section
, rel
->r_offset
);
2900 if (offset
!= (bfd_vma
)-1)
2901 _bfinfdpic_add_rofixup (output_bfd
,
2902 bfinfdpic_gotfixup_section
2904 offset
+ input_section
2905 ->output_section
->vma
2906 + input_section
->output_offset
,
2910 else if ((bfd_get_section_flags (output_bfd
,
2911 input_section
->output_section
)
2912 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
2916 if (_bfinfdpic_osec_readonly_p (output_bfd
,
2920 info
->callbacks
->warning
2922 _("cannot emit dynamic relocations in read-only section"),
2923 name
, input_bfd
, input_section
, rel
->r_offset
);
2926 offset
= _bfd_elf_section_offset (output_bfd
, info
,
2927 input_section
, rel
->r_offset
);
2929 if (offset
!= (bfd_vma
)-1)
2930 _bfinfdpic_add_dyn_reloc (output_bfd
,
2931 bfinfdpic_gotrel_section (info
),
2932 offset
+ input_section
2933 ->output_section
->vma
2934 + input_section
->output_offset
,
2936 dynindx
, addend
, picrel
);
2939 addend
+= bfinfdpic_got_section (info
)->output_section
->vma
;
2942 /* We want the addend in-place because dynamic
2943 relocations are REL. Setting relocation to it should
2944 arrange for it to be installed. */
2945 relocation
= addend
- rel
->r_addend
;
2947 check_segment
[0] = check_segment
[1] = got_segment
;
2950 case R_BFIN_BYTE4_DATA
:
2951 if (! IS_FDPIC (output_bfd
))
2953 check_segment
[0] = check_segment
[1] = -1;
2957 case R_BFIN_FUNCDESC_VALUE
:
2960 bfd_vma addend
= rel
->r_addend
;
2962 offset
= _bfd_elf_section_offset (output_bfd
, info
,
2963 input_section
, rel
->r_offset
);
2965 /* If the symbol is dynamic but binds locally, use
2967 if (h
&& ! BFINFDPIC_SYM_LOCAL (info
, h
))
2969 if (addend
&& r_type
== R_BFIN_FUNCDESC_VALUE
)
2971 info
->callbacks
->warning
2972 (info
, _("R_BFIN_FUNCDESC_VALUE references dynamic symbol with nonzero addend"),
2973 name
, input_bfd
, input_section
, rel
->r_offset
);
2976 dynindx
= h
->dynindx
;
2981 addend
+= h
->root
.u
.def
.value
;
2983 addend
+= sym
->st_value
;
2985 addend
+= osec
->output_offset
;
2986 if (osec
&& osec
->output_section
2987 && ! bfd_is_abs_section (osec
->output_section
)
2988 && ! bfd_is_und_section (osec
->output_section
))
2989 dynindx
= elf_section_data (osec
->output_section
)->dynindx
;
2994 /* If we're linking an executable at a fixed address, we
2995 can omit the dynamic relocation as long as the symbol
2996 is defined in the current link unit (which is implied
2997 by its output section not being NULL). */
2998 if (bfd_link_executable (info
) && !bfd_link_pic (info
)
2999 && (!h
|| BFINFDPIC_SYM_LOCAL (info
, h
)))
3002 addend
+= osec
->output_section
->vma
;
3003 if (IS_FDPIC (input_bfd
)
3004 && (bfd_get_section_flags (output_bfd
,
3005 input_section
->output_section
)
3006 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
3008 if (_bfinfdpic_osec_readonly_p (output_bfd
,
3012 info
->callbacks
->warning
3014 _("cannot emit fixups in read-only section"),
3015 name
, input_bfd
, input_section
, rel
->r_offset
);
3018 if (!h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
3020 if (offset
!= (bfd_vma
)-1)
3022 _bfinfdpic_add_rofixup (output_bfd
,
3023 bfinfdpic_gotfixup_section
3025 offset
+ input_section
3026 ->output_section
->vma
3027 + input_section
->output_offset
,
3030 if (r_type
== R_BFIN_FUNCDESC_VALUE
)
3031 _bfinfdpic_add_rofixup
3033 bfinfdpic_gotfixup_section (info
),
3034 offset
+ input_section
->output_section
->vma
3035 + input_section
->output_offset
+ 4, picrel
);
3042 if ((bfd_get_section_flags (output_bfd
,
3043 input_section
->output_section
)
3044 & (SEC_ALLOC
| SEC_LOAD
)) == (SEC_ALLOC
| SEC_LOAD
))
3046 if (_bfinfdpic_osec_readonly_p (output_bfd
,
3050 info
->callbacks
->warning
3052 _("cannot emit dynamic relocations in read-only section"),
3053 name
, input_bfd
, input_section
, rel
->r_offset
);
3057 if (offset
!= (bfd_vma
)-1)
3058 _bfinfdpic_add_dyn_reloc (output_bfd
,
3059 bfinfdpic_gotrel_section (info
),
3061 + input_section
->output_section
->vma
3062 + input_section
->output_offset
,
3063 r_type
, dynindx
, addend
, picrel
);
3066 addend
+= osec
->output_section
->vma
;
3067 /* We want the addend in-place because dynamic
3068 relocations are REL. Setting relocation to it
3069 should arrange for it to be installed. */
3070 relocation
= addend
- rel
->r_addend
;
3073 if (r_type
== R_BFIN_FUNCDESC_VALUE
)
3075 /* If we've omitted the dynamic relocation, just emit
3076 the fixed addresses of the symbol and of the local
3078 if (bfd_link_executable (info
) && !bfd_link_pic (info
)
3079 && (!h
|| BFINFDPIC_SYM_LOCAL (info
, h
)))
3080 bfd_put_32 (output_bfd
,
3081 bfinfdpic_got_section (info
)->output_section
->vma
3082 + bfinfdpic_got_section (info
)->output_offset
3083 + bfinfdpic_got_initial_offset (info
),
3084 contents
+ rel
->r_offset
+ 4);
3086 /* A function descriptor used for lazy or local
3087 resolving is initialized such that its high word
3088 contains the output section index in which the
3089 PLT entries are located, and the low word
3090 contains the offset of the lazy PLT entry entry
3091 point into that section. */
3092 bfd_put_32 (output_bfd
,
3093 h
&& ! BFINFDPIC_SYM_LOCAL (info
, h
)
3095 : _bfinfdpic_osec_to_segment (output_bfd
,
3098 contents
+ rel
->r_offset
+ 4);
3101 check_segment
[0] = check_segment
[1] = got_segment
;
3105 check_segment
[0] = isec_segment
;
3106 check_segment
[1] = sec
3107 ? _bfinfdpic_osec_to_segment (output_bfd
, sec
->output_section
)
3112 if (check_segment
[0] != check_segment
[1] && IS_FDPIC (output_bfd
))
3114 #if 1 /* If you take this out, remove the #error from fdpic-static-6.d
3115 in the ld testsuite. */
3116 /* This helps catch problems in GCC while we can't do more
3117 than static linking. The idea is to test whether the
3118 input file basename is crt0.o only once. */
3119 if (silence_segment_error
== 1)
3120 silence_segment_error
=
3121 (strlen (input_bfd
->filename
) == 6
3122 && filename_cmp (input_bfd
->filename
, "crt0.o") == 0)
3123 || (strlen (input_bfd
->filename
) > 6
3124 && filename_cmp (input_bfd
->filename
3125 + strlen (input_bfd
->filename
) - 7,
3129 if (!silence_segment_error
3130 /* We don't want duplicate errors for undefined
3132 && !(picrel
&& picrel
->symndx
== -1
3133 && picrel
->d
.h
->root
.type
== bfd_link_hash_undefined
))
3134 info
->callbacks
->warning
3137 ? _("relocations between different segments are not supported")
3138 : _("warning: relocation references a different segment"),
3139 name
, input_bfd
, input_section
, rel
->r_offset
);
3140 if (!silence_segment_error
&& bfd_link_pic (info
))
3142 elf_elfheader (output_bfd
)->e_flags
|= EF_BFIN_PIC
;
3147 case R_BFIN_GOTOFFHI
:
3148 /* We need the addend to be applied before we shift the
3150 relocation
+= rel
->r_addend
;
3153 case R_BFIN_FUNCDESC_GOTHI
:
3154 case R_BFIN_FUNCDESC_GOTOFFHI
:
3159 case R_BFIN_FUNCDESC_GOTLO
:
3160 case R_BFIN_GOTOFFLO
:
3161 case R_BFIN_FUNCDESC_GOTOFFLO
:
3162 relocation
&= 0xffff;
3171 case R_BFIN_PCREL24
:
3172 case R_BFIN_PCREL24_JUMP_L
:
3173 if (! IS_FDPIC (output_bfd
) || ! picrel
->plt
)
3177 /* When referencing a GOT entry, a function descriptor or a
3178 PLT, we don't want the addend to apply to the reference,
3179 but rather to the referenced symbol. The actual entry
3180 will have already been created taking the addend into
3181 account, so cancel it out here. */
3182 case R_BFIN_GOT17M4
:
3185 case R_BFIN_FUNCDESC_GOT17M4
:
3186 case R_BFIN_FUNCDESC_GOTHI
:
3187 case R_BFIN_FUNCDESC_GOTLO
:
3188 case R_BFIN_FUNCDESC_GOTOFF17M4
:
3189 case R_BFIN_FUNCDESC_GOTOFFHI
:
3190 case R_BFIN_FUNCDESC_GOTOFFLO
:
3191 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF17M4
3192 here, since we do want to apply the addend to the others.
3193 Note that we've applied the addend to GOTOFFHI before we
3194 shifted it right. */
3195 case R_BFIN_GOTOFFHI
:
3196 relocation
-= rel
->r_addend
;
3203 r
= bfin_final_link_relocate (rel
, howto
, input_bfd
, input_section
,
3204 contents
, rel
->r_offset
,
3205 relocation
, rel
->r_addend
);
3207 if (r
!= bfd_reloc_ok
)
3209 const char * msg
= (const char *) NULL
;
3213 case bfd_reloc_overflow
:
3214 r
= info
->callbacks
->reloc_overflow
3215 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
3216 (bfd_vma
) 0, input_bfd
, input_section
, rel
->r_offset
);
3219 case bfd_reloc_undefined
:
3220 r
= info
->callbacks
->undefined_symbol
3221 (info
, name
, input_bfd
, input_section
, rel
->r_offset
, TRUE
);
3224 case bfd_reloc_outofrange
:
3225 msg
= _("internal error: out of range error");
3228 case bfd_reloc_notsupported
:
3229 msg
= _("internal error: unsupported relocation error");
3232 case bfd_reloc_dangerous
:
3233 msg
= _("internal error: dangerous relocation");
3237 msg
= _("internal error: unknown error");
3242 r
= info
->callbacks
->warning
3243 (info
, msg
, name
, input_bfd
, input_section
, rel
->r_offset
);
3253 /* Update the relocation information for the relocations of the section
3257 bfinfdpic_gc_sweep_hook (bfd
*abfd
,
3258 struct bfd_link_info
*info
,
3260 const Elf_Internal_Rela
*relocs
)
3262 Elf_Internal_Shdr
*symtab_hdr
;
3263 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
3264 const Elf_Internal_Rela
*rel
;
3265 const Elf_Internal_Rela
*rel_end
;
3266 struct bfinfdpic_relocs_info
*picrel
;
3268 BFD_ASSERT (IS_FDPIC (abfd
));
3270 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3271 sym_hashes
= elf_sym_hashes (abfd
);
3272 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/sizeof(Elf32_External_Sym
);
3273 if (!elf_bad_symtab (abfd
))
3274 sym_hashes_end
-= symtab_hdr
->sh_info
;
3276 rel_end
= relocs
+ sec
->reloc_count
;
3277 for (rel
= relocs
; rel
< rel_end
; rel
++)
3279 struct elf_link_hash_entry
*h
;
3280 unsigned long r_symndx
;
3282 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3283 if (r_symndx
< symtab_hdr
->sh_info
)
3286 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3289 picrel
= bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info
),
3291 rel
->r_addend
, NO_INSERT
);
3293 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
3294 (info
), abfd
, r_symndx
,
3295 rel
->r_addend
, NO_INSERT
);
3300 switch (ELF32_R_TYPE (rel
->r_info
))
3302 case R_BFIN_PCREL24
:
3303 case R_BFIN_PCREL24_JUMP_L
:
3307 case R_BFIN_FUNCDESC_VALUE
:
3308 picrel
->relocsfdv
--;
3309 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
3313 case R_BFIN_BYTE4_DATA
:
3315 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
3319 case R_BFIN_GOT17M4
:
3328 case R_BFIN_FUNCDESC_GOT17M4
:
3329 picrel
->fdgot17m4
--;
3332 case R_BFIN_FUNCDESC_GOTHI
:
3333 case R_BFIN_FUNCDESC_GOTLO
:
3334 picrel
->fdgothilo
--;
3337 case R_BFIN_GOTOFF17M4
:
3338 case R_BFIN_GOTOFFHI
:
3339 case R_BFIN_GOTOFFLO
:
3343 case R_BFIN_FUNCDESC_GOTOFF17M4
:
3344 picrel
->fdgoff17m4
--;
3347 case R_BFIN_FUNCDESC_GOTOFFHI
:
3348 case R_BFIN_FUNCDESC_GOTOFFLO
:
3349 picrel
->fdgoffhilo
--;
3352 case R_BFIN_FUNCDESC
:
3365 /* We need dynamic symbols for every section, since segments can
3366 relocate independently. */
3368 _bfinfdpic_link_omit_section_dynsym (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3369 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3372 switch (elf_section_data (p
)->this_hdr
.sh_type
)
3376 /* If sh_type is yet undecided, assume it could be
3377 SHT_PROGBITS/SHT_NOBITS. */
3381 /* There shouldn't be section relative relocations
3382 against any other section. */
3388 /* Create a .got section, as well as its additional info field. This
3389 is almost entirely copied from
3390 elflink.c:_bfd_elf_create_got_section(). */
3393 _bfin_create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
3395 flagword flags
, pltflags
;
3397 struct elf_link_hash_entry
*h
;
3398 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3401 /* This function may be called more than once. */
3402 s
= bfd_get_linker_section (abfd
, ".got");
3406 /* Machine specific: although pointers are 32-bits wide, we want the
3407 GOT to be aligned to a 64-bit boundary, such that function
3408 descriptors in it can be accessed with 64-bit loads and
3412 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3413 | SEC_LINKER_CREATED
);
3416 s
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
3418 || !bfd_set_section_alignment (abfd
, s
, ptralign
))
3421 if (bed
->want_got_plt
)
3423 s
= bfd_make_section_anyway_with_flags (abfd
, ".got.plt", flags
);
3425 || !bfd_set_section_alignment (abfd
, s
, ptralign
))
3429 if (bed
->want_got_sym
)
3431 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
3432 (or .got.plt) section. We don't do this in the linker script
3433 because we don't want to define the symbol if we are not creating
3434 a global offset table. */
3435 h
= _bfd_elf_define_linkage_sym (abfd
, info
, s
, "__GLOBAL_OFFSET_TABLE_");
3436 elf_hash_table (info
)->hgot
= h
;
3440 /* Machine-specific: we want the symbol for executables as
3442 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3446 /* The first bit of the global offset table is the header. */
3447 s
->size
+= bed
->got_header_size
;
3449 /* This is the machine-specific part. Create and initialize section
3450 data for the got. */
3451 if (IS_FDPIC (abfd
))
3453 bfinfdpic_got_section (info
) = s
;
3454 bfinfdpic_relocs_info (info
) = htab_try_create (1,
3455 bfinfdpic_relocs_info_hash
,
3456 bfinfdpic_relocs_info_eq
,
3458 if (! bfinfdpic_relocs_info (info
))
3461 s
= bfd_make_section_anyway_with_flags (abfd
, ".rel.got",
3462 (flags
| SEC_READONLY
));
3464 || ! bfd_set_section_alignment (abfd
, s
, 2))
3467 bfinfdpic_gotrel_section (info
) = s
;
3469 /* Machine-specific. */
3470 s
= bfd_make_section_anyway_with_flags (abfd
, ".rofixup",
3471 (flags
| SEC_READONLY
));
3473 || ! bfd_set_section_alignment (abfd
, s
, 2))
3476 bfinfdpic_gotfixup_section (info
) = s
;
3479 pltflags
|= SEC_CODE
;
3480 if (bed
->plt_not_loaded
)
3481 pltflags
&= ~ (SEC_CODE
| SEC_LOAD
| SEC_HAS_CONTENTS
);
3482 if (bed
->plt_readonly
)
3483 pltflags
|= SEC_READONLY
;
3485 s
= bfd_make_section_anyway_with_flags (abfd
, ".plt", pltflags
);
3487 || ! bfd_set_section_alignment (abfd
, s
, bed
->plt_alignment
))
3489 /* Blackfin-specific: remember it. */
3490 bfinfdpic_plt_section (info
) = s
;
3492 if (bed
->want_plt_sym
)
3494 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
3496 struct bfd_link_hash_entry
*bh
= NULL
;
3498 if (! (_bfd_generic_link_add_one_symbol
3499 (info
, abfd
, "__PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
, 0, NULL
,
3500 FALSE
, get_elf_backend_data (abfd
)->collect
, &bh
)))
3502 h
= (struct elf_link_hash_entry
*) bh
;
3504 h
->type
= STT_OBJECT
;
3506 if (! bfd_link_executable (info
)
3507 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
3511 /* Blackfin-specific: we want rel relocations for the plt. */
3512 s
= bfd_make_section_anyway_with_flags (abfd
, ".rel.plt",
3513 flags
| SEC_READONLY
);
3515 || ! bfd_set_section_alignment (abfd
, s
, bed
->s
->log_file_align
))
3517 /* Blackfin-specific: remember it. */
3518 bfinfdpic_pltrel_section (info
) = s
;
3523 /* Make sure the got and plt sections exist, and that our pointers in
3524 the link hash table point to them. */
3527 elf32_bfinfdpic_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3529 /* This is mostly copied from
3530 elflink.c:_bfd_elf_create_dynamic_sections(). */
3533 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3535 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3536 | SEC_LINKER_CREATED
);
3538 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
3539 .rel[a].bss sections. */
3541 /* Blackfin-specific: we want to create the GOT in the Blackfin way. */
3542 if (! _bfin_create_got_section (abfd
, info
))
3545 /* Blackfin-specific: make sure we created everything we wanted. */
3546 BFD_ASSERT (bfinfdpic_got_section (info
) && bfinfdpic_gotrel_section (info
)
3547 /* && bfinfdpic_gotfixup_section (info) */
3548 && bfinfdpic_plt_section (info
)
3549 && bfinfdpic_pltrel_section (info
));
3551 if (bed
->want_dynbss
)
3553 /* The .dynbss section is a place to put symbols which are defined
3554 by dynamic objects, are referenced by regular objects, and are
3555 not functions. We must allocate space for them in the process
3556 image and use a R_*_COPY reloc to tell the dynamic linker to
3557 initialize them at run time. The linker script puts the .dynbss
3558 section into the .bss section of the final image. */
3559 s
= bfd_make_section_anyway_with_flags (abfd
, ".dynbss",
3560 SEC_ALLOC
| SEC_LINKER_CREATED
);
3564 /* The .rel[a].bss section holds copy relocs. This section is not
3565 normally needed. We need to create it here, though, so that the
3566 linker will map it to an output section. We can't just create it
3567 only if we need it, because we will not know whether we need it
3568 until we have seen all the input files, and the first time the
3569 main linker code calls BFD after examining all the input files
3570 (size_dynamic_sections) the input sections have already been
3571 mapped to the output sections. If the section turns out not to
3572 be needed, we can discard it later. We will never need this
3573 section when generating a shared object, since they do not use
3575 if (! bfd_link_pic (info
))
3577 s
= bfd_make_section_anyway_with_flags (abfd
,
3579 flags
| SEC_READONLY
);
3581 || ! bfd_set_section_alignment (abfd
, s
, bed
->s
->log_file_align
))
3589 /* Compute the total GOT size required by each symbol in each range.
3590 Symbols may require up to 4 words in the GOT: an entry pointing to
3591 the symbol, an entry pointing to its function descriptor, and a
3592 private function descriptors taking two words. */
3595 _bfinfdpic_count_nontls_entries (struct bfinfdpic_relocs_info
*entry
,
3596 struct _bfinfdpic_dynamic_got_info
*dinfo
)
3598 /* Allocate space for a GOT entry pointing to the symbol. */
3600 dinfo
->got17m4
+= 4;
3601 else if (entry
->gothilo
)
3602 dinfo
->gothilo
+= 4;
3607 /* Allocate space for a GOT entry pointing to the function
3609 if (entry
->fdgot17m4
)
3610 dinfo
->got17m4
+= 4;
3611 else if (entry
->fdgothilo
)
3612 dinfo
->gothilo
+= 4;
3617 /* Decide whether we need a PLT entry, a function descriptor in the
3618 GOT, and a lazy PLT entry for this symbol. */
3619 entry
->plt
= entry
->call
3620 && entry
->symndx
== -1 && ! BFINFDPIC_SYM_LOCAL (dinfo
->info
, entry
->d
.h
)
3621 && elf_hash_table (dinfo
->info
)->dynamic_sections_created
;
3622 entry
->privfd
= entry
->plt
3623 || entry
->fdgoff17m4
|| entry
->fdgoffhilo
3624 || ((entry
->fd
|| entry
->fdgot17m4
|| entry
->fdgothilo
)
3625 && (entry
->symndx
!= -1
3626 || BFINFDPIC_FUNCDESC_LOCAL (dinfo
->info
, entry
->d
.h
)));
3627 entry
->lazyplt
= entry
->privfd
3628 && entry
->symndx
== -1 && ! BFINFDPIC_SYM_LOCAL (dinfo
->info
, entry
->d
.h
)
3629 && ! (dinfo
->info
->flags
& DF_BIND_NOW
)
3630 && elf_hash_table (dinfo
->info
)->dynamic_sections_created
;
3632 /* Allocate space for a function descriptor. */
3633 if (entry
->fdgoff17m4
)
3635 else if (entry
->privfd
&& entry
->plt
)
3637 else if (entry
->privfd
)
3644 dinfo
->lzplt
+= LZPLT_NORMAL_SIZE
;
3647 /* Compute the number of dynamic relocations and fixups that a symbol
3648 requires, and add (or subtract) from the grand and per-symbol
3652 _bfinfdpic_count_relocs_fixups (struct bfinfdpic_relocs_info
*entry
,
3653 struct _bfinfdpic_dynamic_got_info
*dinfo
,
3654 bfd_boolean subtract
)
3656 bfd_vma relocs
= 0, fixups
= 0;
3658 if (!bfd_link_executable (dinfo
->info
) || bfd_link_pie (dinfo
->info
))
3659 relocs
= entry
->relocs32
+ entry
->relocsfd
+ entry
->relocsfdv
;
3662 if (entry
->symndx
!= -1 || BFINFDPIC_SYM_LOCAL (dinfo
->info
, entry
->d
.h
))
3664 if (entry
->symndx
!= -1
3665 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
3666 fixups
+= entry
->relocs32
+ 2 * entry
->relocsfdv
;
3669 relocs
+= entry
->relocs32
+ entry
->relocsfdv
;
3671 if (entry
->symndx
!= -1
3672 || BFINFDPIC_FUNCDESC_LOCAL (dinfo
->info
, entry
->d
.h
))
3674 if (entry
->symndx
!= -1
3675 || entry
->d
.h
->root
.type
!= bfd_link_hash_undefweak
)
3676 fixups
+= entry
->relocsfd
;
3679 relocs
+= entry
->relocsfd
;
3688 entry
->dynrelocs
+= relocs
;
3689 entry
->fixups
+= fixups
;
3690 dinfo
->relocs
+= relocs
;
3691 dinfo
->fixups
+= fixups
;
3694 /* Compute the total GOT and PLT size required by each symbol in each range. *
3695 Symbols may require up to 4 words in the GOT: an entry pointing to
3696 the symbol, an entry pointing to its function descriptor, and a
3697 private function descriptors taking two words. */
3700 _bfinfdpic_count_got_plt_entries (void **entryp
, void *dinfo_
)
3702 struct bfinfdpic_relocs_info
*entry
= *entryp
;
3703 struct _bfinfdpic_dynamic_got_info
*dinfo
= dinfo_
;
3705 _bfinfdpic_count_nontls_entries (entry
, dinfo
);
3707 _bfinfdpic_count_relocs_fixups (entry
, dinfo
, FALSE
);
3712 /* This structure is used to assign offsets to got entries, function
3713 descriptors, plt entries and lazy plt entries. */
3715 struct _bfinfdpic_dynamic_got_plt_info
3717 /* Summary information collected with _bfinfdpic_count_got_plt_entries. */
3718 struct _bfinfdpic_dynamic_got_info g
;
3720 /* For each addressable range, we record a MAX (positive) and MIN
3721 (negative) value. CUR is used to assign got entries, and it's
3722 incremented from an initial positive value to MAX, then from MIN
3723 to FDCUR (unless FDCUR wraps around first). FDCUR is used to
3724 assign function descriptors, and it's decreased from an initial
3725 non-positive value to MIN, then from MAX down to CUR (unless CUR
3726 wraps around first). All of MIN, MAX, CUR and FDCUR always point
3727 to even words. ODD, if non-zero, indicates an odd word to be
3728 used for the next got entry, otherwise CUR is used and
3729 incremented by a pair of words, wrapping around when it reaches
3730 MAX. FDCUR is decremented (and wrapped) before the next function
3731 descriptor is chosen. FDPLT indicates the number of remaining
3732 slots that can be used for function descriptors used only by PLT
3734 struct _bfinfdpic_dynamic_got_alloc_data
3736 bfd_signed_vma max
, cur
, odd
, fdcur
, min
;
3741 /* Determine the positive and negative ranges to be used by each
3742 offset range in the GOT. FDCUR and CUR, that must be aligned to a
3743 double-word boundary, are the minimum (negative) and maximum
3744 (positive) GOT offsets already used by previous ranges, except for
3745 an ODD entry that may have been left behind. GOT and FD indicate
3746 the size of GOT entries and function descriptors that must be
3747 placed within the range from -WRAP to WRAP. If there's room left,
3748 up to FDPLT bytes should be reserved for additional function
3751 inline static bfd_signed_vma
3752 _bfinfdpic_compute_got_alloc_data (struct _bfinfdpic_dynamic_got_alloc_data
*gad
,
3753 bfd_signed_vma fdcur
,
3761 bfd_signed_vma wrapmin
= -wrap
;
3763 /* Start at the given initial points. */
3767 /* If we had an incoming odd word and we have any got entries that
3768 are going to use it, consume it, otherwise leave gad->odd at
3769 zero. We might force gad->odd to zero and return the incoming
3770 odd such that it is used by the next range, but then GOT entries
3771 might appear to be out of order and we wouldn't be able to
3772 shorten the GOT by one word if it turns out to end with an
3773 unpaired GOT entry. */
3783 /* If we're left with an unpaired GOT entry, compute its location
3784 such that we can return it. Otherwise, if got doesn't require an
3785 odd number of words here, either odd was already zero in the
3786 block above, or it was set to zero because got was non-zero, or
3787 got was already zero. In the latter case, we want the value of
3788 odd to carry over to the return statement, so we don't want to
3789 reset odd unless the condition below is true. */
3796 /* Compute the tentative boundaries of this range. */
3797 gad
->max
= cur
+ got
;
3798 gad
->min
= fdcur
- fd
;
3801 /* If function descriptors took too much space, wrap some of them
3803 if (gad
->min
< wrapmin
)
3805 gad
->max
+= wrapmin
- gad
->min
;
3808 /* If there is space left and we have function descriptors
3809 referenced in PLT entries that could take advantage of shorter
3810 offsets, place them here. */
3811 else if (fdplt
&& gad
->min
> wrapmin
)
3814 if ((bfd_vma
) (gad
->min
- wrapmin
) < fdplt
)
3815 fds
= gad
->min
- wrapmin
;
3824 /* If GOT entries took too much space, wrap some of them around.
3825 This may well cause gad->min to become lower than wrapmin. This
3826 will cause a relocation overflow later on, so we don't have to
3828 if ((bfd_vma
) gad
->max
> wrap
)
3830 gad
->min
-= gad
->max
- wrap
;
3833 /* If there is more space left, try to place some more function
3834 descriptors for PLT entries. */
3835 else if (fdplt
&& (bfd_vma
) gad
->max
< wrap
)
3838 if ((bfd_vma
) (wrap
- gad
->max
) < fdplt
)
3839 fds
= wrap
- gad
->max
;
3848 /* If odd was initially computed as an offset past the wrap point,
3851 odd
= gad
->min
+ odd
- gad
->max
;
3853 /* _bfinfdpic_get_got_entry() below will always wrap gad->cur if needed
3854 before returning, so do it here too. This guarantees that,
3855 should cur and fdcur meet at the wrap point, they'll both be
3857 if (gad
->cur
== gad
->max
)
3858 gad
->cur
= gad
->min
;
3863 /* Compute the location of the next GOT entry, given the allocation
3864 data for a range. */
3866 inline static bfd_signed_vma
3867 _bfinfdpic_get_got_entry (struct _bfinfdpic_dynamic_got_alloc_data
*gad
)
3873 /* If there was an odd word left behind, use it. */
3879 /* Otherwise, use the word pointed to by cur, reserve the next
3880 as an odd word, and skip to the next pair of words, possibly
3883 gad
->odd
= gad
->cur
+ 4;
3885 if (gad
->cur
== gad
->max
)
3886 gad
->cur
= gad
->min
;
3892 /* Compute the location of the next function descriptor entry in the
3893 GOT, given the allocation data for a range. */
3895 inline static bfd_signed_vma
3896 _bfinfdpic_get_fd_entry (struct _bfinfdpic_dynamic_got_alloc_data
*gad
)
3898 /* If we're at the bottom, wrap around, and only then allocate the
3899 next pair of words. */
3900 if (gad
->fdcur
== gad
->min
)
3901 gad
->fdcur
= gad
->max
;
3902 return gad
->fdcur
-= 8;
3905 /* Assign GOT offsets for every GOT entry and function descriptor.
3906 Doing everything in a single pass is tricky. */
3909 _bfinfdpic_assign_got_entries (void **entryp
, void *info_
)
3911 struct bfinfdpic_relocs_info
*entry
= *entryp
;
3912 struct _bfinfdpic_dynamic_got_plt_info
*dinfo
= info_
;
3915 entry
->got_entry
= _bfinfdpic_get_got_entry (&dinfo
->got17m4
);
3916 else if (entry
->gothilo
)
3917 entry
->got_entry
= _bfinfdpic_get_got_entry (&dinfo
->gothilo
);
3919 if (entry
->fdgot17m4
)
3920 entry
->fdgot_entry
= _bfinfdpic_get_got_entry (&dinfo
->got17m4
);
3921 else if (entry
->fdgothilo
)
3922 entry
->fdgot_entry
= _bfinfdpic_get_got_entry (&dinfo
->gothilo
);
3924 if (entry
->fdgoff17m4
)
3925 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->got17m4
);
3926 else if (entry
->plt
&& dinfo
->got17m4
.fdplt
)
3928 dinfo
->got17m4
.fdplt
-= 8;
3929 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->got17m4
);
3931 else if (entry
->plt
)
3933 dinfo
->gothilo
.fdplt
-= 8;
3934 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->gothilo
);
3936 else if (entry
->privfd
)
3937 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->gothilo
);
3942 /* Assign GOT offsets to private function descriptors used by PLT
3943 entries (or referenced by 32-bit offsets), as well as PLT entries
3944 and lazy PLT entries. */
3947 _bfinfdpic_assign_plt_entries (void **entryp
, void *info_
)
3949 struct bfinfdpic_relocs_info
*entry
= *entryp
;
3950 struct _bfinfdpic_dynamic_got_plt_info
*dinfo
= info_
;
3952 /* If this symbol requires a local function descriptor, allocate
3954 if (entry
->privfd
&& entry
->fd_entry
== 0)
3956 if (dinfo
->got17m4
.fdplt
)
3958 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->got17m4
);
3959 dinfo
->got17m4
.fdplt
-= 8;
3963 BFD_ASSERT (dinfo
->gothilo
.fdplt
);
3964 entry
->fd_entry
= _bfinfdpic_get_fd_entry (&dinfo
->gothilo
);
3965 dinfo
->gothilo
.fdplt
-= 8;
3973 /* We use the section's raw size to mark the location of the
3975 entry
->plt_entry
= bfinfdpic_plt_section (dinfo
->g
.info
)->size
;
3977 /* Figure out the length of this PLT entry based on the
3978 addressing mode we need to reach the function descriptor. */
3979 BFD_ASSERT (entry
->fd_entry
);
3980 if (entry
->fd_entry
>= -(1 << (18 - 1))
3981 && entry
->fd_entry
+ 4 < (1 << (18 - 1)))
3986 bfinfdpic_plt_section (dinfo
->g
.info
)->size
+= size
;
3991 entry
->lzplt_entry
= dinfo
->g
.lzplt
;
3992 dinfo
->g
.lzplt
+= LZPLT_NORMAL_SIZE
;
3993 /* If this entry is the one that gets the resolver stub, account
3994 for the additional instruction. */
3995 if (entry
->lzplt_entry
% BFINFDPIC_LZPLT_BLOCK_SIZE
3996 == BFINFDPIC_LZPLT_RESOLV_LOC
)
3997 dinfo
->g
.lzplt
+= LZPLT_RESOLVER_EXTRA
;
4003 /* Cancel out any effects of calling _bfinfdpic_assign_got_entries and
4004 _bfinfdpic_assign_plt_entries. */
4007 _bfinfdpic_reset_got_plt_entries (void **entryp
, void *ignore ATTRIBUTE_UNUSED
)
4009 struct bfinfdpic_relocs_info
*entry
= *entryp
;
4011 entry
->got_entry
= 0;
4012 entry
->fdgot_entry
= 0;
4013 entry
->fd_entry
= 0;
4014 entry
->plt_entry
= (bfd_vma
)-1;
4015 entry
->lzplt_entry
= (bfd_vma
)-1;
4020 /* Follow indirect and warning hash entries so that each got entry
4021 points to the final symbol definition. P must point to a pointer
4022 to the hash table we're traversing. Since this traversal may
4023 modify the hash table, we set this pointer to NULL to indicate
4024 we've made a potentially-destructive change to the hash table, so
4025 the traversal must be restarted. */
4027 _bfinfdpic_resolve_final_relocs_info (void **entryp
, void *p
)
4029 struct bfinfdpic_relocs_info
*entry
= *entryp
;
4032 if (entry
->symndx
== -1)
4034 struct elf_link_hash_entry
*h
= entry
->d
.h
;
4035 struct bfinfdpic_relocs_info
*oentry
;
4037 while (h
->root
.type
== bfd_link_hash_indirect
4038 || h
->root
.type
== bfd_link_hash_warning
)
4039 h
= (struct elf_link_hash_entry
*)h
->root
.u
.i
.link
;
4041 if (entry
->d
.h
== h
)
4044 oentry
= bfinfdpic_relocs_info_for_global (*htab
, 0, h
, entry
->addend
,
4049 /* Merge the two entries. */
4050 bfinfdpic_pic_merge_early_relocs_info (oentry
, entry
);
4051 htab_clear_slot (*htab
, entryp
);
4057 /* If we can't find this entry with the new bfd hash, re-insert
4058 it, and get the traversal restarted. */
4059 if (! htab_find (*htab
, entry
))
4061 htab_clear_slot (*htab
, entryp
);
4062 entryp
= htab_find_slot (*htab
, entry
, INSERT
);
4065 /* Abort the traversal, since the whole table may have
4066 moved, and leave it up to the parent to restart the
4068 *(htab_t
*)p
= NULL
;
4076 /* Compute the total size of the GOT, the PLT, the dynamic relocations
4077 section and the rofixup section. Assign locations for GOT and PLT
4081 _bfinfdpic_size_got_plt (bfd
*output_bfd
,
4082 struct _bfinfdpic_dynamic_got_plt_info
*gpinfop
)
4086 struct bfd_link_info
*info
= gpinfop
->g
.info
;
4087 bfd
*dynobj
= elf_hash_table (info
)->dynobj
;
4089 memcpy (bfinfdpic_dynamic_got_plt_info (info
), &gpinfop
->g
,
4090 sizeof (gpinfop
->g
));
4093 /* Compute the total size taken by entries in the 18-bit range,
4094 to tell how many PLT function descriptors we can bring into it
4095 without causing it to overflow. */
4096 limit
= odd
+ gpinfop
->g
.got17m4
+ gpinfop
->g
.fd17m4
;
4097 if (limit
< (bfd_vma
)1 << 18)
4098 limit
= ((bfd_vma
)1 << 18) - limit
;
4101 if (gpinfop
->g
.fdplt
< limit
)
4102 limit
= gpinfop
->g
.fdplt
;
4104 /* Determine the ranges of GOT offsets that we can use for each
4105 range of addressing modes. */
4106 odd
= _bfinfdpic_compute_got_alloc_data (&gpinfop
->got17m4
,
4113 (bfd_vma
)1 << (18-1));
4114 odd
= _bfinfdpic_compute_got_alloc_data (&gpinfop
->gothilo
,
4115 gpinfop
->got17m4
.min
,
4117 gpinfop
->got17m4
.max
,
4120 gpinfop
->g
.fdplt
- gpinfop
->got17m4
.fdplt
,
4121 (bfd_vma
)1 << (32-1));
4123 /* Now assign (most) GOT offsets. */
4124 htab_traverse (bfinfdpic_relocs_info (info
), _bfinfdpic_assign_got_entries
,
4127 bfinfdpic_got_section (info
)->size
= gpinfop
->gothilo
.max
4128 - gpinfop
->gothilo
.min
4129 /* If an odd word is the last word of the GOT, we don't need this
4130 word to be part of the GOT. */
4131 - (odd
+ 4 == gpinfop
->gothilo
.max
? 4 : 0);
4132 if (bfinfdpic_got_section (info
)->size
== 0)
4133 bfinfdpic_got_section (info
)->flags
|= SEC_EXCLUDE
;
4134 else if (bfinfdpic_got_section (info
)->size
== 12
4135 && ! elf_hash_table (info
)->dynamic_sections_created
)
4137 bfinfdpic_got_section (info
)->flags
|= SEC_EXCLUDE
;
4138 bfinfdpic_got_section (info
)->size
= 0;
4142 bfinfdpic_got_section (info
)->contents
=
4143 (bfd_byte
*) bfd_zalloc (dynobj
,
4144 bfinfdpic_got_section (info
)->size
);
4145 if (bfinfdpic_got_section (info
)->contents
== NULL
)
4149 if (elf_hash_table (info
)->dynamic_sections_created
)
4150 /* Subtract the number of lzplt entries, since those will generate
4151 relocations in the pltrel section. */
4152 bfinfdpic_gotrel_section (info
)->size
=
4153 (gpinfop
->g
.relocs
- gpinfop
->g
.lzplt
/ LZPLT_NORMAL_SIZE
)
4154 * get_elf_backend_data (output_bfd
)->s
->sizeof_rel
;
4156 BFD_ASSERT (gpinfop
->g
.relocs
== 0);
4157 if (bfinfdpic_gotrel_section (info
)->size
== 0)
4158 bfinfdpic_gotrel_section (info
)->flags
|= SEC_EXCLUDE
;
4161 bfinfdpic_gotrel_section (info
)->contents
=
4162 (bfd_byte
*) bfd_zalloc (dynobj
,
4163 bfinfdpic_gotrel_section (info
)->size
);
4164 if (bfinfdpic_gotrel_section (info
)->contents
== NULL
)
4168 bfinfdpic_gotfixup_section (info
)->size
= (gpinfop
->g
.fixups
+ 1) * 4;
4169 if (bfinfdpic_gotfixup_section (info
)->size
== 0)
4170 bfinfdpic_gotfixup_section (info
)->flags
|= SEC_EXCLUDE
;
4173 bfinfdpic_gotfixup_section (info
)->contents
=
4174 (bfd_byte
*) bfd_zalloc (dynobj
,
4175 bfinfdpic_gotfixup_section (info
)->size
);
4176 if (bfinfdpic_gotfixup_section (info
)->contents
== NULL
)
4180 if (elf_hash_table (info
)->dynamic_sections_created
)
4181 bfinfdpic_pltrel_section (info
)->size
=
4182 gpinfop
->g
.lzplt
/ LZPLT_NORMAL_SIZE
* get_elf_backend_data (output_bfd
)->s
->sizeof_rel
;
4183 if (bfinfdpic_pltrel_section (info
)->size
== 0)
4184 bfinfdpic_pltrel_section (info
)->flags
|= SEC_EXCLUDE
;
4187 bfinfdpic_pltrel_section (info
)->contents
=
4188 (bfd_byte
*) bfd_zalloc (dynobj
,
4189 bfinfdpic_pltrel_section (info
)->size
);
4190 if (bfinfdpic_pltrel_section (info
)->contents
== NULL
)
4194 /* Add 4 bytes for every block of at most 65535 lazy PLT entries,
4195 such that there's room for the additional instruction needed to
4196 call the resolver. Since _bfinfdpic_assign_got_entries didn't
4197 account for them, our block size is 4 bytes smaller than the real
4199 if (elf_hash_table (info
)->dynamic_sections_created
)
4201 bfinfdpic_plt_section (info
)->size
= gpinfop
->g
.lzplt
4202 + ((gpinfop
->g
.lzplt
+ (BFINFDPIC_LZPLT_BLOCK_SIZE
- 4) - LZPLT_NORMAL_SIZE
)
4203 / (BFINFDPIC_LZPLT_BLOCK_SIZE
- 4) * LZPLT_RESOLVER_EXTRA
);
4206 /* Reset it, such that _bfinfdpic_assign_plt_entries() can use it to
4207 actually assign lazy PLT entries addresses. */
4208 gpinfop
->g
.lzplt
= 0;
4210 /* Save information that we're going to need to generate GOT and PLT
4212 bfinfdpic_got_initial_offset (info
) = -gpinfop
->gothilo
.min
;
4214 if (get_elf_backend_data (output_bfd
)->want_got_sym
)
4215 elf_hash_table (info
)->hgot
->root
.u
.def
.value
4216 = bfinfdpic_got_initial_offset (info
);
4218 if (elf_hash_table (info
)->dynamic_sections_created
)
4219 bfinfdpic_plt_initial_offset (info
) =
4220 bfinfdpic_plt_section (info
)->size
;
4222 htab_traverse (bfinfdpic_relocs_info (info
), _bfinfdpic_assign_plt_entries
,
4225 /* Allocate the PLT section contents only after
4226 _bfinfdpic_assign_plt_entries has a chance to add the size of the
4227 non-lazy PLT entries. */
4228 if (bfinfdpic_plt_section (info
)->size
== 0)
4229 bfinfdpic_plt_section (info
)->flags
|= SEC_EXCLUDE
;
4232 bfinfdpic_plt_section (info
)->contents
=
4233 (bfd_byte
*) bfd_zalloc (dynobj
,
4234 bfinfdpic_plt_section (info
)->size
);
4235 if (bfinfdpic_plt_section (info
)->contents
== NULL
)
4242 /* Set the sizes of the dynamic sections. */
4245 elf32_bfinfdpic_size_dynamic_sections (bfd
*output_bfd
,
4246 struct bfd_link_info
*info
)
4248 struct elf_link_hash_table
*htab
;
4251 struct _bfinfdpic_dynamic_got_plt_info gpinfo
;
4253 htab
= elf_hash_table (info
);
4254 dynobj
= htab
->dynobj
;
4255 BFD_ASSERT (dynobj
!= NULL
);
4257 if (htab
->dynamic_sections_created
)
4259 /* Set the contents of the .interp section to the interpreter. */
4260 if (bfd_link_executable (info
))
4262 s
= bfd_get_linker_section (dynobj
, ".interp");
4263 BFD_ASSERT (s
!= NULL
);
4264 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
4265 s
->contents
= (bfd_byte
*) ELF_DYNAMIC_INTERPRETER
;
4269 memset (&gpinfo
, 0, sizeof (gpinfo
));
4270 gpinfo
.g
.info
= info
;
4274 htab_t relocs
= bfinfdpic_relocs_info (info
);
4276 htab_traverse (relocs
, _bfinfdpic_resolve_final_relocs_info
, &relocs
);
4278 if (relocs
== bfinfdpic_relocs_info (info
))
4282 htab_traverse (bfinfdpic_relocs_info (info
), _bfinfdpic_count_got_plt_entries
,
4285 /* Allocate space to save the summary information, we're going to
4286 use it if we're doing relaxations. */
4287 bfinfdpic_dynamic_got_plt_info (info
) = bfd_alloc (dynobj
, sizeof (gpinfo
.g
));
4289 if (!_bfinfdpic_size_got_plt (output_bfd
, &gpinfo
))
4292 if (elf_hash_table (info
)->dynamic_sections_created
)
4294 if (bfinfdpic_got_section (info
)->size
)
4295 if (!_bfd_elf_add_dynamic_entry (info
, DT_PLTGOT
, 0))
4298 if (bfinfdpic_pltrel_section (info
)->size
)
4299 if (!_bfd_elf_add_dynamic_entry (info
, DT_PLTRELSZ
, 0)
4300 || !_bfd_elf_add_dynamic_entry (info
, DT_PLTREL
, DT_REL
)
4301 || !_bfd_elf_add_dynamic_entry (info
, DT_JMPREL
, 0))
4304 if (bfinfdpic_gotrel_section (info
)->size
)
4305 if (!_bfd_elf_add_dynamic_entry (info
, DT_REL
, 0)
4306 || !_bfd_elf_add_dynamic_entry (info
, DT_RELSZ
, 0)
4307 || !_bfd_elf_add_dynamic_entry (info
, DT_RELENT
,
4308 sizeof (Elf32_External_Rel
)))
4312 s
= bfd_get_linker_section (dynobj
, ".dynbss");
4313 if (s
&& s
->size
== 0)
4314 s
->flags
|= SEC_EXCLUDE
;
4316 s
= bfd_get_linker_section (dynobj
, ".rela.bss");
4317 if (s
&& s
->size
== 0)
4318 s
->flags
|= SEC_EXCLUDE
;
4324 elf32_bfinfdpic_always_size_sections (bfd
*output_bfd
,
4325 struct bfd_link_info
*info
)
4327 if (!bfd_link_relocatable (info
)
4328 && !bfd_elf_stack_segment_size (output_bfd
, info
,
4329 "__stacksize", DEFAULT_STACK_SIZE
))
4335 /* Check whether any of the relocations was optimized away, and
4336 subtract it from the relocation or fixup count. */
4338 _bfinfdpic_check_discarded_relocs (bfd
*abfd
, asection
*sec
,
4339 struct bfd_link_info
*info
,
4340 bfd_boolean
*changed
)
4342 Elf_Internal_Shdr
*symtab_hdr
;
4343 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4344 Elf_Internal_Rela
*rel
, *erel
;
4346 if ((sec
->flags
& SEC_RELOC
) == 0
4347 || sec
->reloc_count
== 0)
4350 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4351 sym_hashes
= elf_sym_hashes (abfd
);
4352 sym_hashes_end
= sym_hashes
+ symtab_hdr
->sh_size
/sizeof(Elf32_External_Sym
);
4353 if (!elf_bad_symtab (abfd
))
4354 sym_hashes_end
-= symtab_hdr
->sh_info
;
4356 rel
= elf_section_data (sec
)->relocs
;
4358 /* Now examine each relocation. */
4359 for (erel
= rel
+ sec
->reloc_count
; rel
< erel
; rel
++)
4361 struct elf_link_hash_entry
*h
;
4362 unsigned long r_symndx
;
4363 struct bfinfdpic_relocs_info
*picrel
;
4364 struct _bfinfdpic_dynamic_got_info
*dinfo
;
4366 if (ELF32_R_TYPE (rel
->r_info
) != R_BFIN_BYTE4_DATA
4367 && ELF32_R_TYPE (rel
->r_info
) != R_BFIN_FUNCDESC
)
4370 if (_bfd_elf_section_offset (sec
->output_section
->owner
,
4371 info
, sec
, rel
->r_offset
)
4375 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4376 if (r_symndx
< symtab_hdr
->sh_info
)
4380 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4381 while (h
->root
.type
== bfd_link_hash_indirect
4382 || h
->root
.type
== bfd_link_hash_warning
)
4383 h
= (struct elf_link_hash_entry
*)h
->root
.u
.i
.link
;
4387 picrel
= bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info
),
4389 rel
->r_addend
, NO_INSERT
);
4391 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info (info
),
4393 rel
->r_addend
, NO_INSERT
);
4399 dinfo
= bfinfdpic_dynamic_got_plt_info (info
);
4401 _bfinfdpic_count_relocs_fixups (picrel
, dinfo
, TRUE
);
4402 if (ELF32_R_TYPE (rel
->r_info
) == R_BFIN_BYTE4_DATA
)
4404 else /* we know (ELF32_R_TYPE (rel->r_info) == R_BFIN_FUNCDESC) */
4406 _bfinfdpic_count_relocs_fixups (picrel
, dinfo
, FALSE
);
4413 bfinfdpic_elf_discard_info (bfd
*ibfd
,
4414 struct elf_reloc_cookie
*cookie ATTRIBUTE_UNUSED
,
4415 struct bfd_link_info
*info
)
4417 bfd_boolean changed
= FALSE
;
4421 /* Account for relaxation of .eh_frame section. */
4422 for (s
= ibfd
->sections
; s
; s
= s
->next
)
4423 if (s
->sec_info_type
== SEC_INFO_TYPE_EH_FRAME
)
4425 if (!_bfinfdpic_check_discarded_relocs (ibfd
, s
, info
, &changed
))
4427 obfd
= s
->output_section
->owner
;
4432 struct _bfinfdpic_dynamic_got_plt_info gpinfo
;
4434 memset (&gpinfo
, 0, sizeof (gpinfo
));
4435 memcpy (&gpinfo
.g
, bfinfdpic_dynamic_got_plt_info (info
),
4438 /* Clear GOT and PLT assignments. */
4439 htab_traverse (bfinfdpic_relocs_info (info
),
4440 _bfinfdpic_reset_got_plt_entries
,
4443 if (!_bfinfdpic_size_got_plt (obfd
, &gpinfo
))
4451 elf32_bfinfdpic_finish_dynamic_sections (bfd
*output_bfd
,
4452 struct bfd_link_info
*info
)
4457 dynobj
= elf_hash_table (info
)->dynobj
;
4459 if (bfinfdpic_got_section (info
))
4461 BFD_ASSERT (bfinfdpic_gotrel_section (info
)->size
4462 == (bfinfdpic_gotrel_section (info
)->reloc_count
4463 * sizeof (Elf32_External_Rel
)));
4465 if (bfinfdpic_gotfixup_section (info
))
4467 struct elf_link_hash_entry
*hgot
= elf_hash_table (info
)->hgot
;
4468 bfd_vma got_value
= hgot
->root
.u
.def
.value
4469 + hgot
->root
.u
.def
.section
->output_section
->vma
4470 + hgot
->root
.u
.def
.section
->output_offset
;
4472 _bfinfdpic_add_rofixup (output_bfd
, bfinfdpic_gotfixup_section (info
),
4475 if (bfinfdpic_gotfixup_section (info
)->size
4476 != (bfinfdpic_gotfixup_section (info
)->reloc_count
* 4))
4478 (*_bfd_error_handler
)
4479 ("LINKER BUG: .rofixup section size mismatch");
4484 if (elf_hash_table (info
)->dynamic_sections_created
)
4486 BFD_ASSERT (bfinfdpic_pltrel_section (info
)->size
4487 == (bfinfdpic_pltrel_section (info
)->reloc_count
4488 * sizeof (Elf32_External_Rel
)));
4491 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
4493 if (elf_hash_table (info
)->dynamic_sections_created
)
4495 Elf32_External_Dyn
* dyncon
;
4496 Elf32_External_Dyn
* dynconend
;
4498 BFD_ASSERT (sdyn
!= NULL
);
4500 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
4501 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
4503 for (; dyncon
< dynconend
; dyncon
++)
4505 Elf_Internal_Dyn dyn
;
4507 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
4515 dyn
.d_un
.d_ptr
= bfinfdpic_got_section (info
)->output_section
->vma
4516 + bfinfdpic_got_section (info
)->output_offset
4517 + bfinfdpic_got_initial_offset (info
);
4518 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4522 dyn
.d_un
.d_ptr
= bfinfdpic_pltrel_section (info
)
4523 ->output_section
->vma
4524 + bfinfdpic_pltrel_section (info
)->output_offset
;
4525 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4529 dyn
.d_un
.d_val
= bfinfdpic_pltrel_section (info
)->size
;
4530 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4539 /* Adjust a symbol defined by a dynamic object and referenced by a
4543 elf32_bfinfdpic_adjust_dynamic_symbol (struct bfd_link_info
*info
,
4544 struct elf_link_hash_entry
*h
)
4548 dynobj
= elf_hash_table (info
)->dynobj
;
4550 /* Make sure we know what is going on here. */
4551 BFD_ASSERT (dynobj
!= NULL
4552 && (h
->u
.weakdef
!= NULL
4555 && !h
->def_regular
)));
4557 /* If this is a weak symbol, and there is a real definition, the
4558 processor independent code will have arranged for us to see the
4559 real definition first, and we can just use the same value. */
4560 if (h
->u
.weakdef
!= NULL
)
4562 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
4563 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
4564 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
4565 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
4571 /* Perform any actions needed for dynamic symbols. */
4574 elf32_bfinfdpic_finish_dynamic_symbol
4575 (bfd
*output_bfd ATTRIBUTE_UNUSED
,
4576 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4577 struct elf_link_hash_entry
*h ATTRIBUTE_UNUSED
,
4578 Elf_Internal_Sym
*sym ATTRIBUTE_UNUSED
)
4583 /* Decide whether to attempt to turn absptr or lsda encodings in
4584 shared libraries into pcrel within the given input section. */
4587 bfinfdpic_elf_use_relative_eh_frame
4588 (bfd
*input_bfd ATTRIBUTE_UNUSED
,
4589 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4590 asection
*eh_frame_section ATTRIBUTE_UNUSED
)
4592 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
4596 /* Adjust the contents of an eh_frame_hdr section before they're output. */
4599 bfinfdpic_elf_encode_eh_address (bfd
*abfd
,
4600 struct bfd_link_info
*info
,
4601 asection
*osec
, bfd_vma offset
,
4602 asection
*loc_sec
, bfd_vma loc_offset
,
4605 struct elf_link_hash_entry
*h
;
4607 h
= elf_hash_table (info
)->hgot
;
4608 BFD_ASSERT (h
&& h
->root
.type
== bfd_link_hash_defined
);
4610 if (! h
|| (_bfinfdpic_osec_to_segment (abfd
, osec
)
4611 == _bfinfdpic_osec_to_segment (abfd
, loc_sec
->output_section
)))
4612 return _bfd_elf_encode_eh_address (abfd
, info
, osec
, offset
,
4613 loc_sec
, loc_offset
, encoded
);
4615 BFD_ASSERT (_bfinfdpic_osec_to_segment (abfd
, osec
)
4616 == (_bfinfdpic_osec_to_segment
4617 (abfd
, h
->root
.u
.def
.section
->output_section
)));
4619 *encoded
= osec
->vma
+ offset
4620 - (h
->root
.u
.def
.value
4621 + h
->root
.u
.def
.section
->output_section
->vma
4622 + h
->root
.u
.def
.section
->output_offset
);
4624 return DW_EH_PE_datarel
| DW_EH_PE_sdata4
;
4629 /* Look through the relocs for a section during the first phase.
4631 Besides handling virtual table relocs for gc, we have to deal with
4632 all sorts of PIC-related relocations. We describe below the
4633 general plan on how to handle such relocations, even though we only
4634 collect information at this point, storing them in hash tables for
4635 perusal of later passes.
4637 32 relocations are propagated to the linker output when creating
4638 position-independent output. LO16 and HI16 relocations are not
4639 supposed to be encountered in this case.
4641 LABEL16 should always be resolvable by the linker, since it's only
4644 LABEL24, on the other hand, is used by calls. If it turns out that
4645 the target of a call is a dynamic symbol, a PLT entry must be
4646 created for it, which triggers the creation of a private function
4647 descriptor and, unless lazy binding is disabled, a lazy PLT entry.
4649 GPREL relocations require the referenced symbol to be in the same
4650 segment as _gp, but this can only be checked later.
4652 All GOT, GOTOFF and FUNCDESC relocations require a .got section to
4653 exist. LABEL24 might as well, since it may require a PLT entry,
4654 that will require a got.
4656 Non-FUNCDESC GOT relocations require a GOT entry to be created
4657 regardless of whether the symbol is dynamic. However, since a
4658 global symbol that turns out to not be exported may have the same
4659 address of a non-dynamic symbol, we don't assign GOT entries at
4660 this point, such that we can share them in this case. A relocation
4661 for the GOT entry always has to be created, be it to offset a
4662 private symbol by the section load address, be it to get the symbol
4663 resolved dynamically.
4665 FUNCDESC GOT relocations require a GOT entry to be created, and
4666 handled as if a FUNCDESC relocation was applied to the GOT entry in
4669 FUNCDESC relocations referencing a symbol that turns out to NOT be
4670 dynamic cause a private function descriptor to be created. The
4671 FUNCDESC relocation then decays to a 32 relocation that points at
4672 the private descriptor. If the symbol is dynamic, the FUNCDESC
4673 relocation is propagated to the linker output, such that the
4674 dynamic linker creates the canonical descriptor, pointing to the
4675 dynamically-resolved definition of the function.
4677 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic
4678 symbols that are assigned to the same segment as the GOT, but we
4679 can only check this later, after we know the complete set of
4680 symbols defined and/or exported.
4682 FUNCDESC GOTOFF relocations require a function descriptor to be
4683 created and, unless lazy binding is disabled or the symbol is not
4684 dynamic, a lazy PLT entry. Since we can't tell at this point
4685 whether a symbol is going to be dynamic, we have to decide later
4686 whether to create a lazy PLT entry or bind the descriptor directly
4687 to the private function.
4689 FUNCDESC_VALUE relocations are not supposed to be present in object
4690 files, but they may very well be simply propagated to the linker
4691 output, since they have no side effect.
4694 A function descriptor always requires a FUNCDESC_VALUE relocation.
4695 Whether it's in .plt.rel or not depends on whether lazy binding is
4696 enabled and on whether the referenced symbol is dynamic.
4698 The existence of a lazy PLT requires the resolverStub lazy PLT
4699 entry to be present.
4702 As for assignment of GOT, PLT and lazy PLT entries, and private
4703 descriptors, we might do them all sequentially, but we can do
4704 better than that. For example, we can place GOT entries and
4705 private function descriptors referenced using 12-bit operands
4706 closer to the PIC register value, such that these relocations don't
4707 overflow. Those that are only referenced with LO16 relocations
4708 could come next, but we may as well place PLT-required function
4709 descriptors in the 12-bit range to make them shorter. Symbols
4710 referenced with LO16/HI16 may come next, but we may place
4711 additional function descriptors in the 16-bit range if we can
4712 reliably tell that we've already placed entries that are ever
4713 referenced with only LO16. PLT entries are therefore generated as
4714 small as possible, while not introducing relocation overflows in
4715 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be
4716 generated before or after PLT entries, but not intermingled with
4717 them, such that we can have more lazy PLT entries in range for a
4718 branch to the resolverStub. The resolverStub should be emitted at
4719 the most distant location from the first lazy PLT entry such that
4720 it's still in range for a branch, or closer, if there isn't a need
4721 for so many lazy PLT entries. Additional lazy PLT entries may be
4722 emitted after the resolverStub, as long as branches are still in
4723 range. If the branch goes out of range, longer lazy PLT entries
4726 We could further optimize PLT and lazy PLT entries by giving them
4727 priority in assignment to closer-to-gr17 locations depending on the
4728 number of occurrences of references to them (assuming a function
4729 that's called more often is more important for performance, so its
4730 PLT entry should be faster), or taking hints from the compiler.
4731 Given infinite time and money... :-) */
4734 bfinfdpic_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4735 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4737 Elf_Internal_Shdr
*symtab_hdr
;
4738 struct elf_link_hash_entry
**sym_hashes
;
4739 const Elf_Internal_Rela
*rel
;
4740 const Elf_Internal_Rela
*rel_end
;
4742 struct bfinfdpic_relocs_info
*picrel
;
4744 if (bfd_link_relocatable (info
))
4747 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4748 sym_hashes
= elf_sym_hashes (abfd
);
4750 dynobj
= elf_hash_table (info
)->dynobj
;
4751 rel_end
= relocs
+ sec
->reloc_count
;
4752 for (rel
= relocs
; rel
< rel_end
; rel
++)
4754 struct elf_link_hash_entry
*h
;
4755 unsigned long r_symndx
;
4757 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4758 if (r_symndx
< symtab_hdr
->sh_info
)
4761 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4763 switch (ELF32_R_TYPE (rel
->r_info
))
4765 case R_BFIN_GOT17M4
:
4768 case R_BFIN_FUNCDESC_GOT17M4
:
4769 case R_BFIN_FUNCDESC_GOTHI
:
4770 case R_BFIN_FUNCDESC_GOTLO
:
4771 case R_BFIN_GOTOFF17M4
:
4772 case R_BFIN_GOTOFFHI
:
4773 case R_BFIN_GOTOFFLO
:
4774 case R_BFIN_FUNCDESC_GOTOFF17M4
:
4775 case R_BFIN_FUNCDESC_GOTOFFHI
:
4776 case R_BFIN_FUNCDESC_GOTOFFLO
:
4777 case R_BFIN_FUNCDESC
:
4778 case R_BFIN_FUNCDESC_VALUE
:
4779 if (! IS_FDPIC (abfd
))
4782 case R_BFIN_PCREL24
:
4783 case R_BFIN_PCREL24_JUMP_L
:
4784 case R_BFIN_BYTE4_DATA
:
4785 if (IS_FDPIC (abfd
) && ! dynobj
)
4787 elf_hash_table (info
)->dynobj
= dynobj
= abfd
;
4788 if (! _bfin_create_got_section (abfd
, info
))
4791 if (! IS_FDPIC (abfd
))
4798 if (h
->dynindx
== -1)
4799 switch (ELF_ST_VISIBILITY (h
->other
))
4805 bfd_elf_link_record_dynamic_symbol (info
, h
);
4809 = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info
),
4811 rel
->r_addend
, INSERT
);
4814 picrel
= bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
4815 (info
), abfd
, r_symndx
,
4816 rel
->r_addend
, INSERT
);
4826 switch (ELF32_R_TYPE (rel
->r_info
))
4828 case R_BFIN_PCREL24
:
4829 case R_BFIN_PCREL24_JUMP_L
:
4830 if (IS_FDPIC (abfd
))
4834 case R_BFIN_FUNCDESC_VALUE
:
4835 picrel
->relocsfdv
++;
4836 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
4840 case R_BFIN_BYTE4_DATA
:
4841 if (! IS_FDPIC (abfd
))
4845 if (bfd_get_section_flags (abfd
, sec
) & SEC_ALLOC
)
4849 case R_BFIN_GOT17M4
:
4858 case R_BFIN_FUNCDESC_GOT17M4
:
4859 picrel
->fdgot17m4
++;
4862 case R_BFIN_FUNCDESC_GOTHI
:
4863 case R_BFIN_FUNCDESC_GOTLO
:
4864 picrel
->fdgothilo
++;
4867 case R_BFIN_GOTOFF17M4
:
4868 case R_BFIN_GOTOFFHI
:
4869 case R_BFIN_GOTOFFLO
:
4873 case R_BFIN_FUNCDESC_GOTOFF17M4
:
4874 picrel
->fdgoff17m4
++;
4877 case R_BFIN_FUNCDESC_GOTOFFHI
:
4878 case R_BFIN_FUNCDESC_GOTOFFLO
:
4879 picrel
->fdgoffhilo
++;
4882 case R_BFIN_FUNCDESC
:
4887 /* This relocation describes the C++ object vtable hierarchy.
4888 Reconstruct it for later use during GC. */
4889 case R_BFIN_GNU_VTINHERIT
:
4890 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4894 /* This relocation describes which C++ vtable entries are actually
4895 used. Record for later use during GC. */
4896 case R_BFIN_GNU_VTENTRY
:
4897 BFD_ASSERT (h
!= NULL
);
4899 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4903 case R_BFIN_HUIMM16
:
4904 case R_BFIN_LUIMM16
:
4905 case R_BFIN_PCREL12_JUMP_S
:
4906 case R_BFIN_PCREL10
:
4911 (*_bfd_error_handler
)
4912 (_("%B: unsupported relocation type %i"),
4913 abfd
, ELF32_R_TYPE (rel
->r_info
));
4921 /* Set the right machine number for a Blackfin ELF file. */
4924 elf32_bfin_object_p (bfd
*abfd
)
4926 bfd_default_set_arch_mach (abfd
, bfd_arch_bfin
, 0);
4927 return (((elf_elfheader (abfd
)->e_flags
& EF_BFIN_FDPIC
) != 0)
4928 == (IS_FDPIC (abfd
)));
4932 elf32_bfin_set_private_flags (bfd
* abfd
, flagword flags
)
4934 elf_elfheader (abfd
)->e_flags
= flags
;
4935 elf_flags_init (abfd
) = TRUE
;
4939 /* Display the flags field. */
4941 elf32_bfin_print_private_bfd_data (bfd
* abfd
, void * ptr
)
4943 FILE *file
= (FILE *) ptr
;
4946 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
4948 /* Print normal ELF private data. */
4949 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
4951 flags
= elf_elfheader (abfd
)->e_flags
;
4953 /* xgettext:c-format */
4954 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
4956 if (flags
& EF_BFIN_PIC
)
4957 fprintf (file
, " -fpic");
4959 if (flags
& EF_BFIN_FDPIC
)
4960 fprintf (file
, " -mfdpic");
4967 /* Merge backend specific data from an object file to the output
4968 object file when linking. */
4971 elf32_bfin_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
4973 flagword old_flags
, new_flags
;
4974 bfd_boolean error
= FALSE
;
4976 new_flags
= elf_elfheader (ibfd
)->e_flags
;
4977 old_flags
= elf_elfheader (obfd
)->e_flags
;
4979 if (new_flags
& EF_BFIN_FDPIC
)
4980 new_flags
&= ~EF_BFIN_PIC
;
4985 (*_bfd_error_handler
) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s",
4986 old_flags
, new_flags
, elf_flags_init (obfd
) ? "yes" : "no",
4987 bfd_get_filename (ibfd
));
4989 if (!elf_flags_init (obfd
)) /* First call, no flags set. */
4991 elf_flags_init (obfd
) = TRUE
;
4992 elf_elfheader (obfd
)->e_flags
= new_flags
;
4995 if (((new_flags
& EF_BFIN_FDPIC
) == 0) != (! IS_FDPIC (obfd
)))
4998 if (IS_FDPIC (obfd
))
4999 (*_bfd_error_handler
)
5000 (_("%s: cannot link non-fdpic object file into fdpic executable"),
5001 bfd_get_filename (ibfd
));
5003 (*_bfd_error_handler
)
5004 (_("%s: cannot link fdpic object file into non-fdpic executable"),
5005 bfd_get_filename (ibfd
));
5009 bfd_set_error (bfd_error_bad_value
);
5014 /* bfin ELF linker hash entry. */
5016 struct bfin_link_hash_entry
5018 struct elf_link_hash_entry root
;
5020 /* Number of PC relative relocs copied for this symbol. */
5021 struct bfin_pcrel_relocs_copied
*pcrel_relocs_copied
;
5024 /* bfin ELF linker hash table. */
5026 struct bfin_link_hash_table
5028 struct elf_link_hash_table root
;
5030 /* Small local sym cache. */
5031 struct sym_cache sym_cache
;
5034 #define bfin_hash_entry(ent) ((struct bfin_link_hash_entry *) (ent))
5036 static struct bfd_hash_entry
*
5037 bfin_link_hash_newfunc (struct bfd_hash_entry
*entry
,
5038 struct bfd_hash_table
*table
, const char *string
)
5040 struct bfd_hash_entry
*ret
= entry
;
5042 /* Allocate the structure if it has not already been allocated by a
5045 ret
= bfd_hash_allocate (table
, sizeof (struct bfin_link_hash_entry
));
5049 /* Call the allocation method of the superclass. */
5050 ret
= _bfd_elf_link_hash_newfunc (ret
, table
, string
);
5052 bfin_hash_entry (ret
)->pcrel_relocs_copied
= NULL
;
5057 /* Create an bfin ELF linker hash table. */
5059 static struct bfd_link_hash_table
*
5060 bfin_link_hash_table_create (bfd
* abfd
)
5062 struct bfin_link_hash_table
*ret
;
5063 bfd_size_type amt
= sizeof (struct bfin_link_hash_table
);
5065 ret
= bfd_zmalloc (amt
);
5069 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
5070 bfin_link_hash_newfunc
,
5071 sizeof (struct elf_link_hash_entry
),
5078 ret
->sym_cache
.abfd
= NULL
;
5080 return &ret
->root
.root
;
5083 /* The size in bytes of an entry in the procedure linkage table. */
5085 /* Finish up the dynamic sections. */
5088 bfin_finish_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
5089 struct bfd_link_info
*info
)
5094 dynobj
= elf_hash_table (info
)->dynobj
;
5096 sdyn
= bfd_get_linker_section (dynobj
, ".dynamic");
5098 if (elf_hash_table (info
)->dynamic_sections_created
)
5100 Elf32_External_Dyn
*dyncon
, *dynconend
;
5102 BFD_ASSERT (sdyn
!= NULL
);
5104 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
5105 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
5106 for (; dyncon
< dynconend
; dyncon
++)
5108 Elf_Internal_Dyn dyn
;
5110 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
5118 /* Finish up dynamic symbol handling. We set the contents of various
5119 dynamic sections here. */
5122 bfin_finish_dynamic_symbol (bfd
* output_bfd
,
5123 struct bfd_link_info
*info
,
5124 struct elf_link_hash_entry
*h
,
5125 Elf_Internal_Sym
* sym
)
5129 dynobj
= elf_hash_table (info
)->dynobj
;
5131 if (h
->got
.offset
!= (bfd_vma
) - 1)
5135 Elf_Internal_Rela rela
;
5138 /* This symbol has an entry in the global offset table.
5141 sgot
= bfd_get_linker_section (dynobj
, ".got");
5142 srela
= bfd_get_linker_section (dynobj
, ".rela.got");
5143 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
5145 rela
.r_offset
= (sgot
->output_section
->vma
5146 + sgot
->output_offset
5147 + (h
->got
.offset
& ~(bfd_vma
) 1));
5149 /* If this is a -Bsymbolic link, and the symbol is defined
5150 locally, we just want to emit a RELATIVE reloc. Likewise if
5151 the symbol was forced to be local because of a version file.
5152 The entry in the global offset table will already have been
5153 initialized in the relocate_section function. */
5154 if (bfd_link_pic (info
)
5156 || h
->dynindx
== -1 || h
->forced_local
) && h
->def_regular
)
5158 (*_bfd_error_handler
) (_("*** check this relocation %s"),
5160 rela
.r_info
= ELF32_R_INFO (0, R_BFIN_PCREL24
);
5161 rela
.r_addend
= bfd_get_signed_32 (output_bfd
,
5165 offset
& ~(bfd_vma
) 1)));
5169 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
5170 sgot
->contents
+ (h
->got
.offset
& ~(bfd_vma
) 1));
5171 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_BFIN_GOT
);
5175 loc
= srela
->contents
;
5176 loc
+= srela
->reloc_count
++ * sizeof (Elf32_External_Rela
);
5177 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
5184 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
5185 if (strcmp (h
->root
.root
.string
, "__DYNAMIC") == 0
5186 || h
== elf_hash_table (info
)->hgot
)
5187 sym
->st_shndx
= SHN_ABS
;
5192 /* Adjust a symbol defined by a dynamic object and referenced by a
5193 regular object. The current definition is in some section of the
5194 dynamic object, but we're not including those sections. We have to
5195 change the definition to something the rest of the link can
5199 bfin_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5200 struct elf_link_hash_entry
*h
)
5204 unsigned int power_of_two
;
5206 dynobj
= elf_hash_table (info
)->dynobj
;
5208 /* Make sure we know what is going on here. */
5209 BFD_ASSERT (dynobj
!= NULL
5211 || h
->u
.weakdef
!= NULL
5212 || (h
->def_dynamic
&& h
->ref_regular
&& !h
->def_regular
)));
5214 /* If this is a function, put it in the procedure linkage table. We
5215 will fill in the contents of the procedure linkage table later,
5216 when we know the address of the .got section. */
5217 if (h
->type
== STT_FUNC
|| h
->needs_plt
)
5222 /* If this is a weak symbol, and there is a real definition, the
5223 processor independent code will have arranged for us to see the
5224 real definition first, and we can just use the same value. */
5225 if (h
->u
.weakdef
!= NULL
)
5227 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5228 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5229 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5230 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5234 /* This is a reference to a symbol defined by a dynamic object which
5235 is not a function. */
5237 /* If we are creating a shared library, we must presume that the
5238 only references to the symbol are via the global offset table.
5239 For such cases we need not do anything here; the relocations will
5240 be handled correctly by relocate_section. */
5241 if (bfd_link_pic (info
))
5244 /* We must allocate the symbol in our .dynbss section, which will
5245 become part of the .bss section of the executable. There will be
5246 an entry for this symbol in the .dynsym section. The dynamic
5247 object will contain position independent code, so all references
5248 from the dynamic object to this symbol will go through the global
5249 offset table. The dynamic linker will use the .dynsym entry to
5250 determine the address it must put in the global offset table, so
5251 both the dynamic object and the regular object will refer to the
5252 same memory location for the variable. */
5254 s
= bfd_get_linker_section (dynobj
, ".dynbss");
5255 BFD_ASSERT (s
!= NULL
);
5257 /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
5258 copy the initial value out of the dynamic object and into the
5259 runtime process image. We need to remember the offset into the
5260 .rela.bss section we are going to use. */
5261 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
5265 srel
= bfd_get_linker_section (dynobj
, ".rela.bss");
5266 BFD_ASSERT (srel
!= NULL
);
5267 srel
->size
+= sizeof (Elf32_External_Rela
);
5271 /* We need to figure out the alignment required for this symbol. I
5272 have no idea how ELF linkers handle this. */
5273 power_of_two
= bfd_log2 (h
->size
);
5274 if (power_of_two
> 3)
5277 /* Apply the required alignment. */
5278 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
5279 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
5281 if (!bfd_set_section_alignment (dynobj
, s
, power_of_two
))
5285 /* Define the symbol as being at this point in the section. */
5286 h
->root
.u
.def
.section
= s
;
5287 h
->root
.u
.def
.value
= s
->size
;
5289 /* Increment the section size to make room for the symbol. */
5295 /* The bfin linker needs to keep track of the number of relocs that it
5296 decides to copy in check_relocs for each symbol. This is so that it
5297 can discard PC relative relocs if it doesn't need them when linking
5298 with -Bsymbolic. We store the information in a field extending the
5299 regular ELF linker hash table. */
5301 /* This structure keeps track of the number of PC relative relocs we have
5302 copied for a given symbol. */
5304 struct bfin_pcrel_relocs_copied
5307 struct bfin_pcrel_relocs_copied
*next
;
5308 /* A section in dynobj. */
5310 /* Number of relocs copied in this section. */
5311 bfd_size_type count
;
5314 /* This function is called via elf_link_hash_traverse if we are
5315 creating a shared object. In the -Bsymbolic case it discards the
5316 space allocated to copy PC relative relocs against symbols which
5317 are defined in regular objects. For the normal shared case, it
5318 discards space for pc-relative relocs that have become local due to
5319 symbol visibility changes. We allocated space for them in the
5320 check_relocs routine, but we won't fill them in in the
5321 relocate_section routine.
5323 We also check whether any of the remaining relocations apply
5324 against a readonly section, and set the DF_TEXTREL flag in this
5328 bfin_discard_copies (struct elf_link_hash_entry
*h
, void * inf
)
5330 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5331 struct bfin_pcrel_relocs_copied
*s
;
5333 if (!h
->def_regular
|| (!info
->symbolic
&& !h
->forced_local
))
5335 if ((info
->flags
& DF_TEXTREL
) == 0)
5337 /* Look for relocations against read-only sections. */
5338 for (s
= bfin_hash_entry (h
)->pcrel_relocs_copied
;
5339 s
!= NULL
; s
= s
->next
)
5340 if ((s
->section
->flags
& SEC_READONLY
) != 0)
5342 info
->flags
|= DF_TEXTREL
;
5350 for (s
= bfin_hash_entry (h
)->pcrel_relocs_copied
;
5351 s
!= NULL
; s
= s
->next
)
5352 s
->section
->size
-= s
->count
* sizeof (Elf32_External_Rela
);
5358 bfin_size_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
5359 struct bfd_link_info
*info
)
5365 dynobj
= elf_hash_table (info
)->dynobj
;
5366 BFD_ASSERT (dynobj
!= NULL
);
5368 if (elf_hash_table (info
)->dynamic_sections_created
)
5370 /* Set the contents of the .interp section to the interpreter. */
5371 if (bfd_link_executable (info
))
5373 s
= bfd_get_linker_section (dynobj
, ".interp");
5374 BFD_ASSERT (s
!= NULL
);
5375 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
5376 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
5381 /* We may have created entries in the .rela.got section.
5382 However, if we are not creating the dynamic sections, we will
5383 not actually use these entries. Reset the size of .rela.got,
5384 which will cause it to get stripped from the output file
5386 s
= bfd_get_linker_section (dynobj
, ".rela.got");
5391 /* If this is a -Bsymbolic shared link, then we need to discard all
5392 PC relative relocs against symbols defined in a regular object.
5393 For the normal shared case we discard the PC relative relocs
5394 against symbols that have become local due to visibility changes.
5395 We allocated space for them in the check_relocs routine, but we
5396 will not fill them in in the relocate_section routine. */
5397 if (bfd_link_pic (info
))
5398 elf_link_hash_traverse (elf_hash_table (info
),
5399 bfin_discard_copies
, info
);
5401 /* The check_relocs and adjust_dynamic_symbol entry points have
5402 determined the sizes of the various dynamic sections. Allocate
5405 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
5410 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
5413 /* It's OK to base decisions on the section name, because none
5414 of the dynobj section names depend upon the input files. */
5415 name
= bfd_get_section_name (dynobj
, s
);
5419 if (CONST_STRNEQ (name
, ".rela"))
5423 /* If we don't need this section, strip it from the
5424 output file. This is mostly to handle .rela.bss and
5425 .rela.plt. We must create both sections in
5426 create_dynamic_sections, because they must be created
5427 before the linker maps input sections to output
5428 sections. The linker does that before
5429 adjust_dynamic_symbol is called, and it is that
5430 function which decides whether anything needs to go
5431 into these sections. */
5438 /* We use the reloc_count field as a counter if we need
5439 to copy relocs into the output file. */
5443 else if (! CONST_STRNEQ (name
, ".got"))
5445 /* It's not one of our sections, so don't allocate space. */
5451 s
->flags
|= SEC_EXCLUDE
;
5455 /* Allocate memory for the section contents. */
5456 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
5457 Unused entries should be reclaimed before the section's contents
5458 are written out, but at the moment this does not happen. Thus in
5459 order to prevent writing out garbage, we initialise the section's
5460 contents to zero. */
5461 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
5462 if (s
->contents
== NULL
&& s
->size
!= 0)
5466 if (elf_hash_table (info
)->dynamic_sections_created
)
5468 /* Add some entries to the .dynamic section. We fill in the
5469 values later, in bfin_finish_dynamic_sections, but we
5470 must add the entries now so that we get the correct size for
5471 the .dynamic section. The DT_DEBUG entry is filled in by the
5472 dynamic linker and used by the debugger. */
5473 #define add_dynamic_entry(TAG, VAL) \
5474 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5476 if (!bfd_link_pic (info
))
5478 if (!add_dynamic_entry (DT_DEBUG
, 0))
5485 if (!add_dynamic_entry (DT_RELA
, 0)
5486 || !add_dynamic_entry (DT_RELASZ
, 0)
5487 || !add_dynamic_entry (DT_RELAENT
,
5488 sizeof (Elf32_External_Rela
)))
5492 if ((info
->flags
& DF_TEXTREL
) != 0)
5494 if (!add_dynamic_entry (DT_TEXTREL
, 0))
5498 #undef add_dynamic_entry
5503 /* Given a .data section and a .emreloc in-memory section, store
5504 relocation information into the .emreloc section which can be
5505 used at runtime to relocate the section. This is called by the
5506 linker when the --embedded-relocs switch is used. This is called
5507 after the add_symbols entry point has been called for all the
5508 objects, and before the final_link entry point is called. */
5511 bfd_bfin_elf32_create_embedded_relocs (bfd
*abfd
,
5512 struct bfd_link_info
*info
,
5517 Elf_Internal_Shdr
*symtab_hdr
;
5518 Elf_Internal_Sym
*isymbuf
= NULL
;
5519 Elf_Internal_Rela
*internal_relocs
= NULL
;
5520 Elf_Internal_Rela
*irel
, *irelend
;
5524 BFD_ASSERT (! bfd_link_relocatable (info
));
5528 if (datasec
->reloc_count
== 0)
5531 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5533 /* Get a copy of the native relocations. */
5534 internal_relocs
= (_bfd_elf_link_read_relocs
5535 (abfd
, datasec
, NULL
, (Elf_Internal_Rela
*) NULL
,
5536 info
->keep_memory
));
5537 if (internal_relocs
== NULL
)
5540 amt
= (bfd_size_type
) datasec
->reloc_count
* 12;
5541 relsec
->contents
= (bfd_byte
*) bfd_alloc (abfd
, amt
);
5542 if (relsec
->contents
== NULL
)
5545 p
= relsec
->contents
;
5547 irelend
= internal_relocs
+ datasec
->reloc_count
;
5548 for (irel
= internal_relocs
; irel
< irelend
; irel
++, p
+= 12)
5550 asection
*targetsec
;
5552 /* We are going to write a four byte longword into the runtime
5553 reloc section. The longword will be the address in the data
5554 section which must be relocated. It is followed by the name
5555 of the target section NUL-padded or truncated to 8
5558 /* We can only relocate absolute longword relocs at run time. */
5559 if (ELF32_R_TYPE (irel
->r_info
) != (int) R_BFIN_BYTE4_DATA
)
5561 *errmsg
= _("unsupported reloc type");
5562 bfd_set_error (bfd_error_bad_value
);
5566 /* Get the target section referred to by the reloc. */
5567 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
5569 /* A local symbol. */
5570 Elf_Internal_Sym
*isym
;
5572 /* Read this BFD's local symbols if we haven't done so already. */
5573 if (isymbuf
== NULL
)
5575 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5576 if (isymbuf
== NULL
)
5577 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
5578 symtab_hdr
->sh_info
, 0,
5580 if (isymbuf
== NULL
)
5584 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
5585 targetsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5590 struct elf_link_hash_entry
*h
;
5592 /* An external symbol. */
5593 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
5594 h
= elf_sym_hashes (abfd
)[indx
];
5595 BFD_ASSERT (h
!= NULL
);
5596 if (h
->root
.type
== bfd_link_hash_defined
5597 || h
->root
.type
== bfd_link_hash_defweak
)
5598 targetsec
= h
->root
.u
.def
.section
;
5603 bfd_put_32 (abfd
, irel
->r_offset
+ datasec
->output_offset
, p
);
5604 memset (p
+ 4, 0, 8);
5605 if (targetsec
!= NULL
)
5606 strncpy ((char *) p
+ 4, targetsec
->output_section
->name
, 8);
5609 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5611 if (internal_relocs
!= NULL
5612 && elf_section_data (datasec
)->relocs
!= internal_relocs
)
5613 free (internal_relocs
);
5617 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
5619 if (internal_relocs
!= NULL
5620 && elf_section_data (datasec
)->relocs
!= internal_relocs
)
5621 free (internal_relocs
);
5625 struct bfd_elf_special_section
const elf32_bfin_special_sections
[] =
5627 { ".l1.text", 8, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
5628 { ".l1.data", 8, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
5629 { NULL
, 0, 0, 0, 0 }
5633 #define TARGET_LITTLE_SYM bfin_elf32_vec
5634 #define TARGET_LITTLE_NAME "elf32-bfin"
5635 #define ELF_ARCH bfd_arch_bfin
5636 #define ELF_TARGET_ID BFIN_ELF_DATA
5637 #define ELF_MACHINE_CODE EM_BLACKFIN
5638 #define ELF_MAXPAGESIZE 0x1000
5639 #define elf_symbol_leading_char '_'
5641 #define bfd_elf32_bfd_reloc_type_lookup bfin_bfd_reloc_type_lookup
5642 #define bfd_elf32_bfd_reloc_name_lookup \
5643 bfin_bfd_reloc_name_lookup
5644 #define elf_info_to_howto bfin_info_to_howto
5645 #define elf_info_to_howto_rel 0
5646 #define elf_backend_object_p elf32_bfin_object_p
5648 #define bfd_elf32_bfd_is_local_label_name \
5649 bfin_is_local_label_name
5650 #define bfin_hash_table(p) \
5651 ((struct bfin_link_hash_table *) (p)->hash)
5655 #define elf_backend_create_dynamic_sections \
5656 _bfd_elf_create_dynamic_sections
5657 #define bfd_elf32_bfd_link_hash_table_create \
5658 bfin_link_hash_table_create
5659 #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link
5661 #define elf_backend_check_relocs bfin_check_relocs
5662 #define elf_backend_adjust_dynamic_symbol \
5663 bfin_adjust_dynamic_symbol
5664 #define elf_backend_size_dynamic_sections \
5665 bfin_size_dynamic_sections
5666 #define elf_backend_relocate_section bfin_relocate_section
5667 #define elf_backend_finish_dynamic_symbol \
5668 bfin_finish_dynamic_symbol
5669 #define elf_backend_finish_dynamic_sections \
5670 bfin_finish_dynamic_sections
5671 #define elf_backend_gc_mark_hook bfin_gc_mark_hook
5672 #define elf_backend_gc_sweep_hook bfin_gc_sweep_hook
5673 #define bfd_elf32_bfd_merge_private_bfd_data \
5674 elf32_bfin_merge_private_bfd_data
5675 #define bfd_elf32_bfd_set_private_flags \
5676 elf32_bfin_set_private_flags
5677 #define bfd_elf32_bfd_print_private_bfd_data \
5678 elf32_bfin_print_private_bfd_data
5679 #define elf_backend_final_write_processing \
5680 elf32_bfin_final_write_processing
5681 #define elf_backend_reloc_type_class elf32_bfin_reloc_type_class
5682 #define elf_backend_stack_align 8
5683 #define elf_backend_can_gc_sections 1
5684 #define elf_backend_special_sections elf32_bfin_special_sections
5685 #define elf_backend_can_refcount 1
5686 #define elf_backend_want_got_plt 0
5687 #define elf_backend_plt_readonly 1
5688 #define elf_backend_want_plt_sym 0
5689 #define elf_backend_got_header_size 12
5690 #define elf_backend_rela_normal 1
5692 #include "elf32-target.h"
5694 #undef TARGET_LITTLE_SYM
5695 #define TARGET_LITTLE_SYM bfin_elf32_fdpic_vec
5696 #undef TARGET_LITTLE_NAME
5697 #define TARGET_LITTLE_NAME "elf32-bfinfdpic"
5699 #define elf32_bed elf32_bfinfdpic_bed
5701 #undef elf_backend_gc_sweep_hook
5702 #define elf_backend_gc_sweep_hook bfinfdpic_gc_sweep_hook
5704 #undef elf_backend_got_header_size
5705 #define elf_backend_got_header_size 0
5707 #undef elf_backend_relocate_section
5708 #define elf_backend_relocate_section bfinfdpic_relocate_section
5709 #undef elf_backend_check_relocs
5710 #define elf_backend_check_relocs bfinfdpic_check_relocs
5712 #undef bfd_elf32_bfd_link_hash_table_create
5713 #define bfd_elf32_bfd_link_hash_table_create \
5714 bfinfdpic_elf_link_hash_table_create
5715 #undef elf_backend_always_size_sections
5716 #define elf_backend_always_size_sections \
5717 elf32_bfinfdpic_always_size_sections
5719 #undef elf_backend_create_dynamic_sections
5720 #define elf_backend_create_dynamic_sections \
5721 elf32_bfinfdpic_create_dynamic_sections
5722 #undef elf_backend_adjust_dynamic_symbol
5723 #define elf_backend_adjust_dynamic_symbol \
5724 elf32_bfinfdpic_adjust_dynamic_symbol
5725 #undef elf_backend_size_dynamic_sections
5726 #define elf_backend_size_dynamic_sections \
5727 elf32_bfinfdpic_size_dynamic_sections
5728 #undef elf_backend_finish_dynamic_symbol
5729 #define elf_backend_finish_dynamic_symbol \
5730 elf32_bfinfdpic_finish_dynamic_symbol
5731 #undef elf_backend_finish_dynamic_sections
5732 #define elf_backend_finish_dynamic_sections \
5733 elf32_bfinfdpic_finish_dynamic_sections
5735 #undef elf_backend_discard_info
5736 #define elf_backend_discard_info \
5737 bfinfdpic_elf_discard_info
5738 #undef elf_backend_can_make_relative_eh_frame
5739 #define elf_backend_can_make_relative_eh_frame \
5740 bfinfdpic_elf_use_relative_eh_frame
5741 #undef elf_backend_can_make_lsda_relative_eh_frame
5742 #define elf_backend_can_make_lsda_relative_eh_frame \
5743 bfinfdpic_elf_use_relative_eh_frame
5744 #undef elf_backend_encode_eh_address
5745 #define elf_backend_encode_eh_address \
5746 bfinfdpic_elf_encode_eh_address
5748 #undef elf_backend_may_use_rel_p
5749 #define elf_backend_may_use_rel_p 1
5750 #undef elf_backend_may_use_rela_p
5751 #define elf_backend_may_use_rela_p 1
5752 /* We use REL for dynamic relocations only. */
5753 #undef elf_backend_default_use_rela_p
5754 #define elf_backend_default_use_rela_p 1
5756 #undef elf_backend_omit_section_dynsym
5757 #define elf_backend_omit_section_dynsym _bfinfdpic_link_omit_section_dynsym
5759 #include "elf32-target.h"