1 /* ADI Blackfin BFD support for 32-bit ELF.
2 Copyright 2005, 2006, 2007 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. */
26 #include "elf/dwarf2.h"
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 PTR 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 fprintf(stderr, "relocation should be even number\n");
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 fprintf(stderr, "relocation should be even number\n");
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_unused0, /* type. */
426 2, /* size (0 = byte, 1 = short, 2 = long). */
428 FALSE, /* pc_relative. */
430 complain_overflow_bitfield, /* complain_on_overflow. */
431 bfd_elf_generic_reloc, /* special_function. */
432 "R_unused0", /* name. */
433 FALSE, /* partial_inplace. */
436 FALSE), /* pcrel_offset. */
438 HOWTO (R_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_pcrel5m2", /* name. */
447 FALSE, /* partial_inplace. */
449 0x0000000F, /* dst_mask. */
450 FALSE), /* pcrel_offset. */
452 HOWTO (R_unused1, /* type. */
454 2, /* size (0 = byte, 1 = short, 2 = long). */
456 FALSE, /* pc_relative. */
458 complain_overflow_bitfield, /* complain_on_overflow. */
459 bfd_elf_generic_reloc, /* special_function. */
460 "R_unused1", /* name. */
461 FALSE, /* partial_inplace. */
464 FALSE), /* pcrel_offset. */
466 HOWTO (R_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_pcrel10", /* name. */
475 FALSE, /* partial_inplace. */
477 0x000003FF, /* dst_mask. */
478 TRUE), /* pcrel_offset. */
480 HOWTO (R_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_pcrel12_jump", /* name. */
493 FALSE, /* partial_inplace. */
495 0x0FFF, /* dst_mask. */
496 TRUE), /* pcrel_offset. */
498 HOWTO (R_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_rimm16", /* name. */
507 FALSE, /* partial_inplace. */
509 0x0000FFFF, /* dst_mask. */
510 TRUE), /* pcrel_offset. */
512 HOWTO (R_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_luimm16", /* name. */
521 FALSE, /* partial_inplace. */
523 0x0000FFFF, /* dst_mask. */
524 TRUE), /* pcrel_offset. */
526 HOWTO (R_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_huimm16", /* name. */
535 FALSE, /* partial_inplace. */
537 0x0000FFFF, /* dst_mask. */
538 TRUE), /* pcrel_offset. */
540 HOWTO (R_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_pcrel12_jump_s", /* name. */
549 FALSE, /* partial_inplace. */
551 0x00000FFF, /* dst_mask. */
552 TRUE), /* pcrel_offset. */
554 HOWTO (R_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_pcrel24_jump_x", /* name. */
563 FALSE, /* partial_inplace. */
565 0x00FFFFFF, /* dst_mask. */
566 TRUE), /* pcrel_offset. */
568 HOWTO (R_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_pcrel24", /* name. */
577 FALSE, /* partial_inplace. */
579 0x00FFFFFF, /* dst_mask. */
580 TRUE), /* pcrel_offset. */
582 HOWTO (R_unusedb, /* type. */
584 2, /* 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_unusedb", /* name. */
591 FALSE, /* partial_inplace. */
594 FALSE), /* pcrel_offset. */
596 HOWTO (R_unusedc, /* type. */
598 2, /* 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_unusedc", /* name. */
605 FALSE, /* partial_inplace. */
608 FALSE), /* pcrel_offset. */
610 HOWTO (R_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_pcrel24_jump_l", /* name. */
619 FALSE, /* partial_inplace. */
621 0x00FFFFFF, /* dst_mask. */
622 TRUE), /* pcrel_offset. */
624 HOWTO (R_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_pcrel24_call_x", /* name. */
633 FALSE, /* partial_inplace. */
635 0x00FFFFFF, /* dst_mask. */
636 TRUE), /* pcrel_offset. */
638 HOWTO (R_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_var_eq_symb", /* name. */
647 FALSE, /* partial_inplace. */
650 FALSE), /* pcrel_offset. */
652 HOWTO (R_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_byte_data", /* name. */
661 FALSE, /* partial_inplace. */
663 0xFF, /* dst_mask. */
664 TRUE), /* pcrel_offset. */
666 HOWTO (R_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_byte2_data", /* name. */
675 FALSE, /* partial_inplace. */
677 0xFFFF, /* dst_mask. */
678 TRUE), /* pcrel_offset. */
680 HOWTO (R_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_byte4_data", /* name. */
689 FALSE, /* partial_inplace. */
691 0xFFFFFFFF, /* dst_mask. */
692 TRUE), /* pcrel_offset. */
694 HOWTO (R_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_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_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_pltpc", /* name. */
943 FALSE, /* partial_inplace. */
944 0xffff, /* src_mask. */
945 0xffff, /* dst_mask. */
946 FALSE), /* pcrel_offset. */
948 HOWTO (R_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. */
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_unused0 },
1002 { BFD_RELOC_BFIN_5_PCREL, R_pcrel5m2 },
1003 { BFD_RELOC_NONE, R_unused1 },
1004 { BFD_RELOC_BFIN_10_PCREL, R_pcrel10 },
1005 { BFD_RELOC_BFIN_12_PCREL_JUMP, R_pcrel12_jump },
1006 { BFD_RELOC_BFIN_16_IMM, R_rimm16 },
1007 { BFD_RELOC_BFIN_16_LOW, R_luimm16 },
1008 { BFD_RELOC_BFIN_16_HIGH, R_huimm16 },
1009 { BFD_RELOC_BFIN_12_PCREL_JUMP_S, R_pcrel12_jump_s },
1010 { BFD_RELOC_24_PCREL, R_pcrel24 },
1011 { BFD_RELOC_24_PCREL, R_pcrel24 },
1012 { BFD_RELOC_BFIN_24_PCREL_JUMP_L, R_pcrel24_jump_l },
1013 { BFD_RELOC_NONE, R_unusedb },
1014 { BFD_RELOC_NONE, R_unusedc },
1015 { BFD_RELOC_BFIN_24_PCREL_CALL_X, R_pcrel24_call_x },
1016 { BFD_RELOC_8, R_byte_data },
1017 { BFD_RELOC_16, R_byte2_data },
1018 { BFD_RELOC_32, R_byte4_data },
1019 { BFD_RELOC_BFIN_11_PCREL, R_pcrel11 },
1020 { BFD_RELOC_BFIN_GOT, R_got },
1021 { BFD_RELOC_BFIN_PLTPC, R_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 = BFIN_RELOC_MIN;
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 && r_type > BFIN_RELOC_MIN)
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 /* Return TRUE if the name is a local label.
1123 bfin local labels begin with L$. */
1125 bfin_is_local_label_name (
1126 bfd *abfd ATTRIBUTE_UNUSED,
1129 if (label[0] == 'L' && label[1] == '$' )
1132 return _bfd_elf_is_local_label_name (abfd, label);
1135 extern const bfd_target bfd_elf32_bfinfdpic_vec;
1136 #define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_bfinfdpic_vec)
1138 /* An extension of the elf hash table data structure, containing some
1139 additional Blackfin-specific data. */
1140 struct bfinfdpic_elf_link_hash_table
1142 struct elf_link_hash_table elf;
1144 /* A pointer to the .got section. */
1146 /* A pointer to the .rel.got section. */
1148 /* A pointer to the .rofixup section. */
1149 asection *sgotfixup;
1150 /* A pointer to the .plt section. */
1152 /* A pointer to the .rel.plt section. */
1154 /* GOT base offset. */
1156 /* Location of the first non-lazy PLT entry, i.e., the number of
1157 bytes taken by lazy PLT entries. */
1159 /* A hash table holding information about which symbols were
1160 referenced with which PIC-related relocations. */
1161 struct htab *relocs_info;
1164 /* Get the Blackfin ELF linker hash table from a link_info structure. */
1166 #define bfinfdpic_hash_table(info) \
1167 ((struct bfinfdpic_elf_link_hash_table *) ((info)->hash))
1169 #define bfinfdpic_got_section(info) \
1170 (bfinfdpic_hash_table (info)->sgot)
1171 #define bfinfdpic_gotrel_section(info) \
1172 (bfinfdpic_hash_table (info)->sgotrel)
1173 #define bfinfdpic_gotfixup_section(info) \
1174 (bfinfdpic_hash_table (info)->sgotfixup)
1175 #define bfinfdpic_plt_section(info) \
1176 (bfinfdpic_hash_table (info)->splt)
1177 #define bfinfdpic_pltrel_section(info) \
1178 (bfinfdpic_hash_table (info)->spltrel)
1179 #define bfinfdpic_relocs_info(info) \
1180 (bfinfdpic_hash_table (info)->relocs_info)
1181 #define bfinfdpic_got_initial_offset(info) \
1182 (bfinfdpic_hash_table (info)->got0)
1183 #define bfinfdpic_plt_initial_offset(info) \
1184 (bfinfdpic_hash_table (info)->plt0)
1186 /* Create a Blackfin ELF linker hash table. */
1188 static struct bfd_link_hash_table *
1189 bfinfdpic_elf_link_hash_table_create (bfd *abfd)
1191 struct bfinfdpic_elf_link_hash_table *ret;
1192 bfd_size_type amt = sizeof (struct bfinfdpic_elf_link_hash_table);
1194 ret = bfd_zalloc (abfd, amt);
1198 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
1199 _bfd_elf_link_hash_newfunc,
1200 sizeof (struct elf_link_hash_entry)))
1206 return &ret->elf.root;
1209 /* Decide whether a reference to a symbol can be resolved locally or
1210 not. If the symbol is protected, we want the local address, but
1211 its function descriptor must be assigned by the dynamic linker. */
1212 #define BFINFDPIC_SYM_LOCAL(INFO, H) \
1213 (_bfd_elf_symbol_refs_local_p ((H), (INFO), 1) \
1214 || ! elf_hash_table (INFO)->dynamic_sections_created)
1215 #define BFINFDPIC_FUNCDESC_LOCAL(INFO, H) \
1216 ((H)->dynindx == -1 || ! elf_hash_table (INFO)->dynamic_sections_created)
1218 /* This structure collects information on what kind of GOT, PLT or
1219 function descriptors are required by relocations that reference a
1221 struct bfinfdpic_relocs_info
1223 /* The index of the symbol, as stored in the relocation r_info, if
1224 we have a local symbol; -1 otherwise. */
1228 /* The input bfd in which the symbol is defined, if it's a local
1231 /* If symndx == -1, the hash table entry corresponding to a global
1232 symbol (even if it turns out to bind locally, in which case it
1233 should ideally be replaced with section's symndx + addend). */
1234 struct elf_link_hash_entry *h;
1236 /* The addend of the relocation that references the symbol. */
1239 /* The fields above are used to identify an entry. The fields below
1240 contain information on how an entry is used and, later on, which
1241 locations it was assigned. */
1242 /* The following 2 fields record whether the symbol+addend above was
1243 ever referenced with a GOT relocation. The 17M4 suffix indicates a
1244 GOT17M4 relocation; hilo is used for GOTLO/GOTHI pairs. */
1247 /* Whether a FUNCDESC relocation references symbol+addend. */
1249 /* Whether a FUNCDESC_GOT relocation references symbol+addend. */
1250 unsigned fdgot17m4:1;
1251 unsigned fdgothilo:1;
1252 /* Whether a FUNCDESC_GOTOFF relocation references symbol+addend. */
1253 unsigned fdgoff17m4:1;
1254 unsigned fdgoffhilo:1;
1255 /* Whether symbol+addend is referenced with GOTOFF17M4, GOTOFFLO or
1256 GOTOFFHI relocations. The addend doesn't really matter, since we
1257 envision that this will only be used to check whether the symbol
1258 is mapped to the same segment as the got. */
1260 /* Whether symbol+addend is referenced by a LABEL24 relocation. */
1262 /* Whether symbol+addend is referenced by a 32 or FUNCDESC_VALUE
1265 /* Whether we need a PLT entry for a symbol. Should be implied by
1267 (call && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)) */
1269 /* Whether a function descriptor should be created in this link unit
1270 for symbol+addend. Should be implied by something like:
1271 (plt || fdgotoff17m4 || fdgotofflohi
1272 || ((fd || fdgot17m4 || fdgothilo)
1273 && (symndx != -1 || BFINFDPIC_FUNCDESC_LOCAL (info, d.h)))) */
1275 /* Whether a lazy PLT entry is needed for this symbol+addend.
1276 Should be implied by something like:
1277 (privfd && symndx == -1 && ! BFINFDPIC_SYM_LOCAL (info, d.h)
1278 && ! (info->flags & DF_BIND_NOW)) */
1280 /* Whether we've already emitted GOT relocations and PLT entries as
1281 needed for this symbol. */
1284 /* The number of R_byte4_data, R_BFIN_FUNCDESC and R_BFIN_FUNCDESC_VALUE
1285 relocations referencing the symbol. */
1286 unsigned relocs32, relocsfd, relocsfdv;
1288 /* The number of .rofixups entries and dynamic relocations allocated
1289 for this symbol, minus any that might have already been used. */
1290 unsigned fixups, dynrelocs;
1292 /* The offsets of the GOT entries assigned to symbol+addend, to the
1293 function descriptor's address, and to a function descriptor,
1294 respectively. Should be zero if unassigned. The offsets are
1295 counted from the value that will be assigned to the PIC register,
1296 not from the beginning of the .got section. */
1297 bfd_signed_vma got_entry, fdgot_entry, fd_entry;
1298 /* The offsets of the PLT entries assigned to symbol+addend,
1299 non-lazy and lazy, respectively. If unassigned, should be
1301 bfd_vma plt_entry, lzplt_entry;
1304 /* Compute a hash with the key fields of an bfinfdpic_relocs_info entry. */
1306 bfinfdpic_relocs_info_hash (const void *entry_)
1308 const struct bfinfdpic_relocs_info *entry = entry_;
1310 return (entry->symndx == -1
1311 ? (long) entry->d.h->root.root.hash
1312 : entry->symndx + (long) entry->d.abfd->id * 257) + entry->addend;
1315 /* Test whether the key fields of two bfinfdpic_relocs_info entries are
1318 bfinfdpic_relocs_info_eq (const void *entry1, const void *entry2)
1320 const struct bfinfdpic_relocs_info *e1 = entry1;
1321 const struct bfinfdpic_relocs_info *e2 = entry2;
1323 return e1->symndx == e2->symndx && e1->addend == e2->addend
1324 && (e1->symndx == -1 ? e1->d.h == e2->d.h : e1->d.abfd == e2->d.abfd);
1327 /* Find or create an entry in a hash table HT that matches the key
1328 fields of the given ENTRY. If it's not found, memory for a new
1329 entry is allocated in ABFD's obstack. */
1330 static struct bfinfdpic_relocs_info *
1331 bfinfdpic_relocs_info_find (struct htab *ht,
1333 const struct bfinfdpic_relocs_info *entry,
1334 enum insert_option insert)
1336 struct bfinfdpic_relocs_info **loc =
1337 (struct bfinfdpic_relocs_info **) htab_find_slot (ht, entry, insert);
1345 *loc = bfd_zalloc (abfd, sizeof (**loc));
1350 (*loc)->symndx = entry->symndx;
1351 (*loc)->d = entry->d;
1352 (*loc)->addend = entry->addend;
1353 (*loc)->plt_entry = (bfd_vma)-1;
1354 (*loc)->lzplt_entry = (bfd_vma)-1;
1359 /* Obtain the address of the entry in HT associated with H's symbol +
1360 addend, creating a new entry if none existed. ABFD is only used
1361 for memory allocation purposes. */
1362 inline static struct bfinfdpic_relocs_info *
1363 bfinfdpic_relocs_info_for_global (struct htab *ht,
1365 struct elf_link_hash_entry *h,
1367 enum insert_option insert)
1369 struct bfinfdpic_relocs_info entry;
1373 entry.addend = addend;
1375 return bfinfdpic_relocs_info_find (ht, abfd, &entry, insert);
1378 /* Obtain the address of the entry in HT associated with the SYMNDXth
1379 local symbol of the input bfd ABFD, plus the addend, creating a new
1380 entry if none existed. */
1381 inline static struct bfinfdpic_relocs_info *
1382 bfinfdpic_relocs_info_for_local (struct htab *ht,
1386 enum insert_option insert)
1388 struct bfinfdpic_relocs_info entry;
1390 entry.symndx = symndx;
1391 entry.d.abfd = abfd;
1392 entry.addend = addend;
1394 return bfinfdpic_relocs_info_find (ht, abfd, &entry, insert);
1397 /* Merge fields set by check_relocs() of two entries that end up being
1398 mapped to the same (presumably global) symbol. */
1401 bfinfdpic_pic_merge_early_relocs_info (struct bfinfdpic_relocs_info *e2,
1402 struct bfinfdpic_relocs_info const *e1)
1404 e2->got17m4 |= e1->got17m4;
1405 e2->gothilo |= e1->gothilo;
1407 e2->fdgot17m4 |= e1->fdgot17m4;
1408 e2->fdgothilo |= e1->fdgothilo;
1409 e2->fdgoff17m4 |= e1->fdgoff17m4;
1410 e2->fdgoffhilo |= e1->fdgoffhilo;
1411 e2->gotoff |= e1->gotoff;
1412 e2->call |= e1->call;
1416 /* Every block of 65535 lazy PLT entries shares a single call to the
1417 resolver, inserted in the 32768th lazy PLT entry (i.e., entry #
1418 32767, counting from 0). All other lazy PLT entries branch to it
1419 in a single instruction. */
1421 #define LZPLT_RESOLVER_EXTRA 10
1422 #define LZPLT_NORMAL_SIZE 6
1423 #define LZPLT_ENTRIES 1362
1425 #define BFINFDPIC_LZPLT_BLOCK_SIZE ((bfd_vma) LZPLT_NORMAL_SIZE * LZPLT_ENTRIES + LZPLT_RESOLVER_EXTRA)
1426 #define BFINFDPIC_LZPLT_RESOLV_LOC (LZPLT_NORMAL_SIZE * LZPLT_ENTRIES / 2)
1428 /* Add a dynamic relocation to the SRELOC section. */
1430 inline static bfd_vma
1431 _bfinfdpic_add_dyn_reloc (bfd *output_bfd, asection *sreloc, bfd_vma offset,
1432 int reloc_type, long dynindx, bfd_vma addend,
1433 struct bfinfdpic_relocs_info *entry)
1435 Elf_Internal_Rela outrel;
1436 bfd_vma reloc_offset;
1438 outrel.r_offset = offset;
1439 outrel.r_info = ELF32_R_INFO (dynindx, reloc_type);
1440 outrel.r_addend = addend;
1442 reloc_offset = sreloc->reloc_count * sizeof (Elf32_External_Rel);
1443 BFD_ASSERT (reloc_offset < sreloc->size);
1444 bfd_elf32_swap_reloc_out (output_bfd, &outrel,
1445 sreloc->contents + reloc_offset);
1446 sreloc->reloc_count++;
1448 /* If the entry's index is zero, this relocation was probably to a
1449 linkonce section that got discarded. We reserved a dynamic
1450 relocation, but it was for another entry than the one we got at
1451 the time of emitting the relocation. Unfortunately there's no
1452 simple way for us to catch this situation, since the relocation
1453 is cleared right before calling relocate_section, at which point
1454 we no longer know what the relocation used to point to. */
1457 BFD_ASSERT (entry->dynrelocs > 0);
1461 return reloc_offset;
1464 /* Add a fixup to the ROFIXUP section. */
1467 _bfinfdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma offset,
1468 struct bfinfdpic_relocs_info *entry)
1470 bfd_vma fixup_offset;
1472 if (rofixup->flags & SEC_EXCLUDE)
1475 fixup_offset = rofixup->reloc_count * 4;
1476 if (rofixup->contents)
1478 BFD_ASSERT (fixup_offset < rofixup->size);
1479 bfd_put_32 (output_bfd, offset, rofixup->contents + fixup_offset);
1481 rofixup->reloc_count++;
1483 if (entry && entry->symndx)
1485 /* See discussion about symndx == 0 in _bfinfdpic_add_dyn_reloc
1487 BFD_ASSERT (entry->fixups > 0);
1491 return fixup_offset;
1494 /* Find the segment number in which OSEC, and output section, is
1498 _bfinfdpic_osec_to_segment (bfd *output_bfd, asection *osec)
1500 struct elf_segment_map *m;
1501 Elf_Internal_Phdr *p;
1503 /* Find the segment that contains the output_section. */
1504 for (m = elf_tdata (output_bfd)->segment_map,
1505 p = elf_tdata (output_bfd)->phdr;
1511 for (i = m->count - 1; i >= 0; i--)
1512 if (m->sections[i] == osec)
1519 return p - elf_tdata (output_bfd)->phdr;
1522 inline static bfd_boolean
1523 _bfinfdpic_osec_readonly_p (bfd *output_bfd, asection *osec)
1525 unsigned seg = _bfinfdpic_osec_to_segment (output_bfd, osec);
1527 return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W);
1530 /* Generate relocations for GOT entries, function descriptors, and
1531 code for PLT and lazy PLT entries. */
1533 inline static bfd_boolean
1534 _bfinfdpic_emit_got_relocs_plt_entries (struct bfinfdpic_relocs_info *entry,
1536 struct bfd_link_info *info,
1538 Elf_Internal_Sym *sym,
1542 bfd_vma fd_lazy_rel_offset = (bfd_vma)-1;
1549 if (entry->got_entry || entry->fdgot_entry || entry->fd_entry)
1551 /* If the symbol is dynamic, consider it for dynamic
1552 relocations, otherwise decay to section + offset. */
1553 if (entry->symndx == -1 && entry->d.h->dynindx != -1)
1554 dynindx = entry->d.h->dynindx;
1557 if (sec->output_section
1558 && ! bfd_is_abs_section (sec->output_section)
1559 && ! bfd_is_und_section (sec->output_section))
1560 dynindx = elf_section_data (sec->output_section)->dynindx;
1566 /* Generate relocation for GOT entry pointing to the symbol. */
1567 if (entry->got_entry)
1570 bfd_vma ad = addend;
1572 /* If the symbol is dynamic but binds locally, use
1574 if (sec && (entry->symndx != -1
1575 || BFINFDPIC_SYM_LOCAL (info, entry->d.h)))
1577 if (entry->symndx == -1)
1578 ad += entry->d.h->root.u.def.value;
1580 ad += sym->st_value;
1581 ad += sec->output_offset;
1582 if (sec->output_section && elf_section_data (sec->output_section))
1583 idx = elf_section_data (sec->output_section)->dynindx;
1588 /* If we're linking an executable at a fixed address, we can
1589 omit the dynamic relocation as long as the symbol is local to
1591 if (info->executable && !info->pie
1592 && (entry->symndx != -1
1593 || BFINFDPIC_SYM_LOCAL (info, entry->d.h)))
1596 ad += sec->output_section->vma;
1597 if (entry->symndx != -1
1598 || entry->d.h->root.type != bfd_link_hash_undefweak)
1599 _bfinfdpic_add_rofixup (output_bfd,
1600 bfinfdpic_gotfixup_section (info),
1601 bfinfdpic_got_section (info)->output_section
1603 + bfinfdpic_got_section (info)->output_offset
1604 + bfinfdpic_got_initial_offset (info)
1605 + entry->got_entry, entry);
1608 _bfinfdpic_add_dyn_reloc (output_bfd, bfinfdpic_gotrel_section (info),
1609 _bfd_elf_section_offset
1611 bfinfdpic_got_section (info),
1612 bfinfdpic_got_initial_offset (info)
1614 + bfinfdpic_got_section (info)
1615 ->output_section->vma
1616 + bfinfdpic_got_section (info)->output_offset,
1617 R_byte4_data, idx, ad, entry);
1619 bfd_put_32 (output_bfd, ad,
1620 bfinfdpic_got_section (info)->contents
1621 + bfinfdpic_got_initial_offset (info)
1622 + entry->got_entry);
1625 /* Generate relocation for GOT entry pointing to a canonical
1626 function descriptor. */
1627 if (entry->fdgot_entry)
1632 if (! (entry->symndx == -1
1633 && entry->d.h->root.type == bfd_link_hash_undefweak
1634 && BFINFDPIC_SYM_LOCAL (info, entry->d.h)))
1636 /* If the symbol is dynamic and there may be dynamic symbol
1637 resolution because we are, or are linked with, a shared
1638 library, emit a FUNCDESC relocation such that the dynamic
1639 linker will allocate the function descriptor. If the
1640 symbol needs a non-local function descriptor but binds
1641 locally (e.g., its visibility is protected, emit a
1642 dynamic relocation decayed to section+offset. */
1643 if (entry->symndx == -1
1644 && ! BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h)
1645 && BFINFDPIC_SYM_LOCAL (info, entry->d.h)
1646 && !(info->executable && !info->pie))
1648 reloc = R_BFIN_FUNCDESC;
1649 idx = elf_section_data (entry->d.h->root.u.def.section
1650 ->output_section)->dynindx;
1651 ad = entry->d.h->root.u.def.section->output_offset
1652 + entry->d.h->root.u.def.value;
1654 else if (entry->symndx == -1
1655 && ! BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h))
1657 reloc = R_BFIN_FUNCDESC;
1665 /* Otherwise, we know we have a private function descriptor,
1666 so reference it directly. */
1667 if (elf_hash_table (info)->dynamic_sections_created)
1668 BFD_ASSERT (entry->privfd);
1669 reloc = R_byte4_data;
1670 idx = elf_section_data (bfinfdpic_got_section (info)
1671 ->output_section)->dynindx;
1672 ad = bfinfdpic_got_section (info)->output_offset
1673 + bfinfdpic_got_initial_offset (info) + entry->fd_entry;
1676 /* If there is room for dynamic symbol resolution, emit the
1677 dynamic relocation. However, if we're linking an
1678 executable at a fixed location, we won't have emitted a
1679 dynamic symbol entry for the got section, so idx will be
1680 zero, which means we can and should compute the address
1681 of the private descriptor ourselves. */
1682 if (info->executable && !info->pie
1683 && (entry->symndx != -1
1684 || BFINFDPIC_FUNCDESC_LOCAL (info, entry->d.h)))
1686 ad += bfinfdpic_got_section (info)->output_section->vma;
1687 _bfinfdpic_add_rofixup (output_bfd,
1688 bfinfdpic_gotfixup_section (info),
1689 bfinfdpic_got_section (info)
1690 ->output_section->vma
1691 + bfinfdpic_got_section (info)
1693 + bfinfdpic_got_initial_offset (info)
1694 + entry->fdgot_entry, entry);
1697 _bfinfdpic_add_dyn_reloc (output_bfd,
1698 bfinfdpic_gotrel_section (info),
1699 _bfd_elf_section_offset
1701 bfinfdpic_got_section (info),
1702 bfinfdpic_got_initial_offset (info)
1703 + entry->fdgot_entry)
1704 + bfinfdpic_got_section (info)
1705 ->output_section->vma
1706 + bfinfdpic_got_section (info)
1708 reloc, idx, ad, entry);
1711 bfd_put_32 (output_bfd, ad,
1712 bfinfdpic_got_section (info)->contents
1713 + bfinfdpic_got_initial_offset (info)
1714 + entry->fdgot_entry);
1717 /* Generate relocation to fill in a private function descriptor in
1719 if (entry->fd_entry)
1722 bfd_vma ad = addend;
1724 long lowword, highword;
1726 /* If the symbol is dynamic but binds locally, use
1728 if (sec && (entry->symndx != -1
1729 || BFINFDPIC_SYM_LOCAL (info, entry->d.h)))
1731 if (entry->symndx == -1)
1732 ad += entry->d.h->root.u.def.value;
1734 ad += sym->st_value;
1735 ad += sec->output_offset;
1736 if (sec->output_section && elf_section_data (sec->output_section))
1737 idx = elf_section_data (sec->output_section)->dynindx;
1742 /* If we're linking an executable at a fixed address, we can
1743 omit the dynamic relocation as long as the symbol is local to
1745 if (info->executable && !info->pie
1746 && (entry->symndx != -1 || BFINFDPIC_SYM_LOCAL (info, entry->d.h)))
1749 ad += sec->output_section->vma;
1751 if (entry->symndx != -1
1752 || entry->d.h->root.type != bfd_link_hash_undefweak)
1754 _bfinfdpic_add_rofixup (output_bfd,
1755 bfinfdpic_gotfixup_section (info),
1756 bfinfdpic_got_section (info)
1757 ->output_section->vma
1758 + bfinfdpic_got_section (info)
1760 + bfinfdpic_got_initial_offset (info)
1761 + entry->fd_entry, entry);
1762 _bfinfdpic_add_rofixup (output_bfd,
1763 bfinfdpic_gotfixup_section (info),
1764 bfinfdpic_got_section (info)
1765 ->output_section->vma
1766 + bfinfdpic_got_section (info)
1768 + bfinfdpic_got_initial_offset (info)
1769 + entry->fd_entry + 4, entry);
1775 = _bfinfdpic_add_dyn_reloc (output_bfd,
1777 ? bfinfdpic_pltrel_section (info)
1778 : bfinfdpic_gotrel_section (info),
1779 _bfd_elf_section_offset
1781 bfinfdpic_got_section (info),
1782 bfinfdpic_got_initial_offset (info)
1784 + bfinfdpic_got_section (info)
1785 ->output_section->vma
1786 + bfinfdpic_got_section (info)
1788 R_BFIN_FUNCDESC_VALUE, idx, ad, entry);
1791 /* If we've omitted the dynamic relocation, just emit the fixed
1792 addresses of the symbol and of the local GOT base offset. */
1793 if (info->executable && !info->pie && sec && sec->output_section)
1796 highword = bfinfdpic_got_section (info)->output_section->vma
1797 + bfinfdpic_got_section (info)->output_offset
1798 + bfinfdpic_got_initial_offset (info);
1800 else if (entry->lazyplt)
1805 fd_lazy_rel_offset = ofst;
1807 /* A function descriptor used for lazy or local resolving is
1808 initialized such that its high word contains the output
1809 section index in which the PLT entries are located, and
1810 the low word contains the address of the lazy PLT entry
1811 entry point, that must be within the memory region
1812 assigned to that section. */
1813 lowword = entry->lzplt_entry + 4
1814 + bfinfdpic_plt_section (info)->output_offset
1815 + bfinfdpic_plt_section (info)->output_section->vma;
1816 highword = _bfinfdpic_osec_to_segment
1817 (output_bfd, bfinfdpic_plt_section (info)->output_section);
1821 /* A function descriptor for a local function gets the index
1822 of the section. For a non-local function, it's
1825 if (entry->symndx == -1 && entry->d.h->dynindx != -1
1826 && entry->d.h->dynindx == idx)
1829 highword = _bfinfdpic_osec_to_segment
1830 (output_bfd, sec->output_section);
1833 bfd_put_32 (output_bfd, lowword,
1834 bfinfdpic_got_section (info)->contents
1835 + bfinfdpic_got_initial_offset (info)
1837 bfd_put_32 (output_bfd, highword,
1838 bfinfdpic_got_section (info)->contents
1839 + bfinfdpic_got_initial_offset (info)
1840 + entry->fd_entry + 4);
1843 /* Generate code for the PLT entry. */
1844 if (entry->plt_entry != (bfd_vma) -1)
1846 bfd_byte *plt_code = bfinfdpic_plt_section (info)->contents
1849 BFD_ASSERT (entry->fd_entry);
1851 /* Figure out what kind of PLT entry we need, depending on the
1852 location of the function descriptor within the GOT. */
1853 if (entry->fd_entry >= -(1 << (18 - 1))
1854 && entry->fd_entry + 4 < (1 << (18 - 1)))
1856 /* P1 = [P3 + fd_entry]; P3 = [P3 + fd_entry + 4] */
1857 bfd_put_32 (output_bfd,
1858 0xe519 | ((entry->fd_entry << 14) & 0xFFFF0000),
1860 bfd_put_32 (output_bfd,
1861 0xe51b | (((entry->fd_entry + 4) << 14) & 0xFFFF0000),
1867 /* P1.L = fd_entry; P1.H = fd_entry;
1871 bfd_put_32 (output_bfd,
1872 0xe109 | (entry->fd_entry << 16),
1874 bfd_put_32 (output_bfd,
1875 0xe149 | (entry->fd_entry & 0xFFFF0000),
1877 bfd_put_16 (output_bfd, 0x5ad9, plt_code + 8);
1878 bfd_put_16 (output_bfd, 0x9159, plt_code + 10);
1879 bfd_put_16 (output_bfd, 0xac5b, plt_code + 12);
1883 bfd_put_16 (output_bfd, 0x0051, plt_code);
1886 /* Generate code for the lazy PLT entry. */
1887 if (entry->lzplt_entry != (bfd_vma) -1)
1889 bfd_byte *lzplt_code = bfinfdpic_plt_section (info)->contents
1890 + entry->lzplt_entry;
1891 bfd_vma resolverStub_addr;
1893 bfd_put_32 (output_bfd, fd_lazy_rel_offset, lzplt_code);
1896 resolverStub_addr = entry->lzplt_entry / BFINFDPIC_LZPLT_BLOCK_SIZE
1897 * BFINFDPIC_LZPLT_BLOCK_SIZE + BFINFDPIC_LZPLT_RESOLV_LOC;
1898 if (resolverStub_addr >= bfinfdpic_plt_initial_offset (info))
1899 resolverStub_addr = bfinfdpic_plt_initial_offset (info) - LZPLT_NORMAL_SIZE - LZPLT_RESOLVER_EXTRA;
1901 if (entry->lzplt_entry == resolverStub_addr)
1903 /* This is a lazy PLT entry that includes a resolver call.
1907 bfd_put_32 (output_bfd,
1910 bfd_put_16 (output_bfd, 0x0052, lzplt_code + 4);
1914 /* JUMP.S resolverStub */
1915 bfd_put_16 (output_bfd,
1917 | (((resolverStub_addr - entry->lzplt_entry)
1918 / 2) & (((bfd_vma)1 << 12) - 1)),
1927 /* Look through the relocs for a section during the first phase, and
1928 allocate space in the global offset table or procedure linkage
1932 bfin_check_relocs (bfd * abfd,
1933 struct bfd_link_info *info,
1935 const Elf_Internal_Rela *relocs)
1938 Elf_Internal_Shdr *symtab_hdr;
1939 struct elf_link_hash_entry **sym_hashes;
1940 bfd_signed_vma *local_got_refcounts;
1941 const Elf_Internal_Rela *rel;
1942 const Elf_Internal_Rela *rel_end;
1946 if (info->relocatable)
1949 dynobj = elf_hash_table (info)->dynobj;
1950 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1951 sym_hashes = elf_sym_hashes (abfd);
1952 local_got_refcounts = elf_local_got_refcounts (abfd);
1958 rel_end = relocs + sec->reloc_count;
1959 for (rel = relocs; rel < rel_end; rel++)
1961 unsigned long r_symndx;
1962 struct elf_link_hash_entry *h;
1964 r_symndx = ELF32_R_SYM (rel->r_info);
1965 if (r_symndx < symtab_hdr->sh_info)
1968 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1970 switch (ELF32_R_TYPE (rel->r_info))
1972 /* This relocation describes the C++ object vtable hierarchy.
1973 Reconstruct it for later use during GC. */
1974 case R_BFIN_GNU_VTINHERIT:
1975 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
1979 /* This relocation describes which C++ vtable entries
1980 are actually used. Record for later use during GC. */
1981 case R_BFIN_GNU_VTENTRY:
1982 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
1988 && strcmp (h->root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0)
1994 /* Create the .got section. */
1995 elf_hash_table (info)->dynobj = dynobj = abfd;
1996 if (!_bfd_elf_create_got_section (dynobj, info))
2002 sgot = bfd_get_section_by_name (dynobj, ".got");
2003 BFD_ASSERT (sgot != NULL);
2006 if (srelgot == NULL && (h != NULL || info->shared))
2008 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2009 if (srelgot == NULL)
2011 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
2012 | SEC_IN_MEMORY | SEC_LINKER_CREATED
2014 srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
2017 || !bfd_set_section_alignment (dynobj, srelgot, 2))
2024 if (h->got.refcount == 0)
2026 /* Make sure this symbol is output as a dynamic symbol. */
2027 if (h->dynindx == -1 && !h->forced_local)
2029 if (!bfd_elf_link_record_dynamic_symbol (info, h))
2033 /* Allocate space in the .got section. */
2035 /* Allocate relocation space. */
2036 srelgot->size += sizeof (Elf32_External_Rela);
2042 /* This is a global offset table entry for a local symbol. */
2043 if (local_got_refcounts == NULL)
2047 size = symtab_hdr->sh_info;
2048 size *= sizeof (bfd_signed_vma);
2049 local_got_refcounts = ((bfd_signed_vma *)
2050 bfd_zalloc (abfd, size));
2051 if (local_got_refcounts == NULL)
2053 elf_local_got_refcounts (abfd) = local_got_refcounts;
2055 if (local_got_refcounts[r_symndx] == 0)
2060 /* If we are generating a shared object, we need to
2061 output a R_68K_RELATIVE reloc so that the dynamic
2062 linker can adjust this GOT entry. */
2063 srelgot->size += sizeof (Elf32_External_Rela);
2066 local_got_refcounts[r_symndx]++;
2078 static enum elf_reloc_type_class
2079 elf32_bfin_reloc_type_class (const Elf_Internal_Rela * rela)
2081 switch ((int) ELF32_R_TYPE (rela->r_info))
2084 return reloc_class_normal;
2088 /* Relocate an Blackfin ELF section.
2090 The RELOCATE_SECTION function is called by the new ELF backend linker
2091 to handle the relocations for a section.
2093 The relocs are always passed as Rela structures; if the section
2094 actually uses Rel structures, the r_addend field will always be
2097 This function is responsible for adjusting the section contents as
2098 necessary, and (if using Rela relocs and generating a relocatable
2099 output file) adjusting the reloc addend as necessary.
2101 This function does not have to worry about setting the reloc
2102 address or the reloc symbol index.
2104 LOCAL_SYMS is a pointer to the swapped in local symbols.
2106 LOCAL_SECTIONS is an array giving the section in the input file
2107 corresponding to the st_shndx field of each local symbol.
2109 The global hash table entry for the global symbols can be found
2110 via elf_sym_hashes (input_bfd).
2112 When generating relocatable output, this function must handle
2113 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2114 going to be the section symbol corresponding to the output
2115 section, which means that the addend must be adjusted
2119 bfinfdpic_relocate_section (bfd * output_bfd,
2120 struct bfd_link_info *info,
2122 asection * input_section,
2123 bfd_byte * contents,
2124 Elf_Internal_Rela * relocs,
2125 Elf_Internal_Sym * local_syms,
2126 asection ** local_sections)
2128 Elf_Internal_Shdr *symtab_hdr;
2129 struct elf_link_hash_entry **sym_hashes;
2130 Elf_Internal_Rela *rel;
2131 Elf_Internal_Rela *relend;
2132 unsigned isec_segment, got_segment, plt_segment,
2134 int silence_segment_error = !(info->shared || info->pie);
2136 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
2137 sym_hashes = elf_sym_hashes (input_bfd);
2138 relend = relocs + input_section->reloc_count;
2140 isec_segment = _bfinfdpic_osec_to_segment (output_bfd,
2141 input_section->output_section);
2142 if (IS_FDPIC (output_bfd) && bfinfdpic_got_section (info))
2143 got_segment = _bfinfdpic_osec_to_segment (output_bfd,
2144 bfinfdpic_got_section (info)
2148 if (IS_FDPIC (output_bfd) && elf_hash_table (info)->dynamic_sections_created)
2149 plt_segment = _bfinfdpic_osec_to_segment (output_bfd,
2150 bfinfdpic_plt_section (info)
2155 for (rel = relocs; rel < relend; rel ++)
2157 reloc_howto_type *howto;
2158 unsigned long r_symndx;
2159 Elf_Internal_Sym *sym;
2161 struct elf_link_hash_entry *h;
2163 bfd_reloc_status_type r;
2164 const char * name = NULL;
2167 struct bfinfdpic_relocs_info *picrel;
2168 bfd_vma orig_addend = rel->r_addend;
2170 r_type = ELF32_R_TYPE (rel->r_info);
2172 if (r_type == R_BFIN_GNU_VTINHERIT
2173 || r_type == R_BFIN_GNU_VTENTRY)
2176 r_symndx = ELF32_R_SYM (rel->r_info);
2177 howto = bfin_reloc_type_lookup (input_bfd, r_type);
2180 bfd_set_error (bfd_error_bad_value);
2188 if (r_symndx < symtab_hdr->sh_info)
2190 sym = local_syms + r_symndx;
2191 osec = sec = local_sections [r_symndx];
2192 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2194 name = bfd_elf_string_from_elf_section
2195 (input_bfd, symtab_hdr->sh_link, sym->st_name);
2196 name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
2201 bfd_boolean unresolved_reloc;
2203 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2204 r_symndx, symtab_hdr, sym_hashes,
2206 unresolved_reloc, warned);
2210 if (sec != NULL && elf_discarded_section (sec))
2212 /* For relocs against symbols from removed linkonce sections,
2213 or sections discarded by a linker script, we just want the
2214 section contents zeroed. Avoid any special processing. */
2215 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2221 if (info->relocatable)
2225 && (h->root.type == bfd_link_hash_defined
2226 || h->root.type == bfd_link_hash_defweak)
2227 && !BFINFDPIC_SYM_LOCAL (info, h))
2236 case R_pcrel24_jump_l:
2238 if (! IS_FDPIC (output_bfd))
2241 case R_BFIN_GOT17M4:
2244 case R_BFIN_FUNCDESC_GOT17M4:
2245 case R_BFIN_FUNCDESC_GOTHI:
2246 case R_BFIN_FUNCDESC_GOTLO:
2247 case R_BFIN_GOTOFF17M4:
2248 case R_BFIN_GOTOFFHI:
2249 case R_BFIN_GOTOFFLO:
2250 case R_BFIN_FUNCDESC_GOTOFF17M4:
2251 case R_BFIN_FUNCDESC_GOTOFFHI:
2252 case R_BFIN_FUNCDESC_GOTOFFLO:
2253 case R_BFIN_FUNCDESC:
2254 case R_BFIN_FUNCDESC_VALUE:
2256 picrel = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info
2257 (info), input_bfd, h,
2258 orig_addend, INSERT);
2260 /* In order to find the entry we created before, we must
2261 use the original addend, not the one that may have been
2262 modified by _bfd_elf_rela_local_sym(). */
2263 picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
2264 (info), input_bfd, r_symndx,
2265 orig_addend, INSERT);
2269 if (!_bfinfdpic_emit_got_relocs_plt_entries (picrel, output_bfd, info,
2273 (*_bfd_error_handler)
2274 (_("%B: relocation at `%A+0x%x' references symbol `%s' with nonzero addend"),
2275 input_bfd, input_section, rel->r_offset, name);
2285 if (h && ! BFINFDPIC_SYM_LOCAL (info, h))
2287 info->callbacks->warning
2288 (info, _("relocation references symbol not defined in the module"),
2289 name, input_bfd, input_section, rel->r_offset);
2298 case R_pcrel24_jump_l:
2299 check_segment[0] = isec_segment;
2300 if (! IS_FDPIC (output_bfd))
2301 check_segment[1] = isec_segment;
2302 else if (picrel->plt)
2304 relocation = bfinfdpic_plt_section (info)->output_section->vma
2305 + bfinfdpic_plt_section (info)->output_offset
2306 + picrel->plt_entry;
2307 check_segment[1] = plt_segment;
2309 /* We don't want to warn on calls to undefined weak symbols,
2310 as calls to them must be protected by non-NULL tests
2311 anyway, and unprotected calls would invoke undefined
2313 else if (picrel->symndx == -1
2314 && picrel->d.h->root.type == bfd_link_hash_undefweak)
2315 check_segment[1] = check_segment[0];
2317 check_segment[1] = sec
2318 ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section)
2322 case R_BFIN_GOT17M4:
2325 relocation = picrel->got_entry;
2326 check_segment[0] = check_segment[1] = got_segment;
2329 case R_BFIN_FUNCDESC_GOT17M4:
2330 case R_BFIN_FUNCDESC_GOTHI:
2331 case R_BFIN_FUNCDESC_GOTLO:
2332 relocation = picrel->fdgot_entry;
2333 check_segment[0] = check_segment[1] = got_segment;
2336 case R_BFIN_GOTOFFHI:
2337 case R_BFIN_GOTOFF17M4:
2338 case R_BFIN_GOTOFFLO:
2339 relocation -= bfinfdpic_got_section (info)->output_section->vma
2340 + bfinfdpic_got_section (info)->output_offset
2341 + bfinfdpic_got_initial_offset (info);
2342 check_segment[0] = got_segment;
2343 check_segment[1] = sec
2344 ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section)
2348 case R_BFIN_FUNCDESC_GOTOFF17M4:
2349 case R_BFIN_FUNCDESC_GOTOFFHI:
2350 case R_BFIN_FUNCDESC_GOTOFFLO:
2351 relocation = picrel->fd_entry;
2352 check_segment[0] = check_segment[1] = got_segment;
2355 case R_BFIN_FUNCDESC:
2358 bfd_vma addend = rel->r_addend;
2360 if (! (h && h->root.type == bfd_link_hash_undefweak
2361 && BFINFDPIC_SYM_LOCAL (info, h)))
2363 /* If the symbol is dynamic and there may be dynamic
2364 symbol resolution because we are or are linked with a
2365 shared library, emit a FUNCDESC relocation such that
2366 the dynamic linker will allocate the function
2367 descriptor. If the symbol needs a non-local function
2368 descriptor but binds locally (e.g., its visibility is
2369 protected, emit a dynamic relocation decayed to
2371 if (h && ! BFINFDPIC_FUNCDESC_LOCAL (info, h)
2372 && BFINFDPIC_SYM_LOCAL (info, h)
2373 && !(info->executable && !info->pie))
2375 dynindx = elf_section_data (h->root.u.def.section
2376 ->output_section)->dynindx;
2377 addend += h->root.u.def.section->output_offset
2378 + h->root.u.def.value;
2380 else if (h && ! BFINFDPIC_FUNCDESC_LOCAL (info, h))
2384 info->callbacks->warning
2385 (info, _("R_BFIN_FUNCDESC references dynamic symbol with nonzero addend"),
2386 name, input_bfd, input_section, rel->r_offset);
2389 dynindx = h->dynindx;
2393 /* Otherwise, we know we have a private function
2394 descriptor, so reference it directly. */
2395 BFD_ASSERT (picrel->privfd);
2396 r_type = R_byte4_data;
2397 dynindx = elf_section_data (bfinfdpic_got_section (info)
2398 ->output_section)->dynindx;
2399 addend = bfinfdpic_got_section (info)->output_offset
2400 + bfinfdpic_got_initial_offset (info)
2404 /* If there is room for dynamic symbol resolution, emit
2405 the dynamic relocation. However, if we're linking an
2406 executable at a fixed location, we won't have emitted a
2407 dynamic symbol entry for the got section, so idx will
2408 be zero, which means we can and should compute the
2409 address of the private descriptor ourselves. */
2410 if (info->executable && !info->pie
2411 && (!h || BFINFDPIC_FUNCDESC_LOCAL (info, h)))
2413 addend += bfinfdpic_got_section (info)->output_section->vma;
2414 if ((bfd_get_section_flags (output_bfd,
2415 input_section->output_section)
2416 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2418 if (_bfinfdpic_osec_readonly_p (output_bfd,
2422 info->callbacks->warning
2424 _("cannot emit fixups in read-only section"),
2425 name, input_bfd, input_section, rel->r_offset);
2428 _bfinfdpic_add_rofixup (output_bfd,
2429 bfinfdpic_gotfixup_section
2431 _bfd_elf_section_offset
2433 input_section, rel->r_offset)
2435 ->output_section->vma
2436 + input_section->output_offset,
2440 else if ((bfd_get_section_flags (output_bfd,
2441 input_section->output_section)
2442 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2446 if (_bfinfdpic_osec_readonly_p (output_bfd,
2450 info->callbacks->warning
2452 _("cannot emit dynamic relocations in read-only section"),
2453 name, input_bfd, input_section, rel->r_offset);
2456 offset = _bfd_elf_section_offset (output_bfd, info,
2457 input_section, rel->r_offset);
2458 /* Only output a reloc for a not deleted entry. */
2459 if (offset >= (bfd_vma) -2)
2460 _bfinfdpic_add_dyn_reloc (output_bfd,
2461 bfinfdpic_gotrel_section (info),
2464 dynindx, addend, picrel);
2466 _bfinfdpic_add_dyn_reloc (output_bfd,
2467 bfinfdpic_gotrel_section (info),
2468 offset + input_section
2469 ->output_section->vma
2470 + input_section->output_offset,
2472 dynindx, addend, picrel);
2475 addend += bfinfdpic_got_section (info)->output_section->vma;
2478 /* We want the addend in-place because dynamic
2479 relocations are REL. Setting relocation to it should
2480 arrange for it to be installed. */
2481 relocation = addend - rel->r_addend;
2483 check_segment[0] = check_segment[1] = got_segment;
2487 if (! IS_FDPIC (output_bfd))
2489 check_segment[0] = check_segment[1] = -1;
2493 case R_BFIN_FUNCDESC_VALUE:
2496 bfd_vma addend = rel->r_addend;
2498 /* If the symbol is dynamic but binds locally, use
2500 if (h && ! BFINFDPIC_SYM_LOCAL (info, h))
2502 if (addend && r_type == R_BFIN_FUNCDESC_VALUE)
2504 info->callbacks->warning
2505 (info, _("R_BFIN_FUNCDESC_VALUE references dynamic symbol with nonzero addend"),
2506 name, input_bfd, input_section, rel->r_offset);
2509 dynindx = h->dynindx;
2514 addend += h->root.u.def.value;
2516 addend += sym->st_value;
2518 addend += osec->output_offset;
2519 if (osec && osec->output_section
2520 && ! bfd_is_abs_section (osec->output_section)
2521 && ! bfd_is_und_section (osec->output_section))
2522 dynindx = elf_section_data (osec->output_section)->dynindx;
2527 /* If we're linking an executable at a fixed address, we
2528 can omit the dynamic relocation as long as the symbol
2529 is defined in the current link unit (which is implied
2530 by its output section not being NULL). */
2531 if (info->executable && !info->pie
2532 && (!h || BFINFDPIC_SYM_LOCAL (info, h)))
2535 addend += osec->output_section->vma;
2536 if (IS_FDPIC (input_bfd)
2537 && (bfd_get_section_flags (output_bfd,
2538 input_section->output_section)
2539 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2541 if (_bfinfdpic_osec_readonly_p (output_bfd,
2545 info->callbacks->warning
2547 _("cannot emit fixups in read-only section"),
2548 name, input_bfd, input_section, rel->r_offset);
2551 if (!h || h->root.type != bfd_link_hash_undefweak)
2553 _bfinfdpic_add_rofixup (output_bfd,
2554 bfinfdpic_gotfixup_section
2556 _bfd_elf_section_offset
2558 input_section, rel->r_offset)
2560 ->output_section->vma
2561 + input_section->output_offset,
2563 if (r_type == R_BFIN_FUNCDESC_VALUE)
2564 _bfinfdpic_add_rofixup
2566 bfinfdpic_gotfixup_section (info),
2567 _bfd_elf_section_offset
2569 input_section, rel->r_offset)
2570 + input_section->output_section->vma
2571 + input_section->output_offset + 4, picrel);
2577 if ((bfd_get_section_flags (output_bfd,
2578 input_section->output_section)
2579 & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
2581 if (_bfinfdpic_osec_readonly_p (output_bfd,
2585 info->callbacks->warning
2587 _("cannot emit dynamic relocations in read-only section"),
2588 name, input_bfd, input_section, rel->r_offset);
2591 _bfinfdpic_add_dyn_reloc (output_bfd,
2592 bfinfdpic_gotrel_section (info),
2593 _bfd_elf_section_offset
2595 input_section, rel->r_offset)
2597 ->output_section->vma
2598 + input_section->output_offset,
2599 r_type, dynindx, addend, picrel);
2602 addend += osec->output_section->vma;
2603 /* We want the addend in-place because dynamic
2604 relocations are REL. Setting relocation to it
2605 should arrange for it to be installed. */
2606 relocation = addend - rel->r_addend;
2609 if (r_type == R_BFIN_FUNCDESC_VALUE)
2611 /* If we've omitted the dynamic relocation, just emit
2612 the fixed addresses of the symbol and of the local
2614 if (info->executable && !info->pie
2615 && (!h || BFINFDPIC_SYM_LOCAL (info, h)))
2616 bfd_put_32 (output_bfd,
2617 bfinfdpic_got_section (info)->output_section->vma
2618 + bfinfdpic_got_section (info)->output_offset
2619 + bfinfdpic_got_initial_offset (info),
2620 contents + rel->r_offset + 4);
2622 /* A function descriptor used for lazy or local
2623 resolving is initialized such that its high word
2624 contains the output section index in which the
2625 PLT entries are located, and the low word
2626 contains the offset of the lazy PLT entry entry
2627 point into that section. */
2628 bfd_put_32 (output_bfd,
2629 h && ! BFINFDPIC_SYM_LOCAL (info, h)
2631 : _bfinfdpic_osec_to_segment (output_bfd,
2634 contents + rel->r_offset + 4);
2637 check_segment[0] = check_segment[1] = got_segment;
2641 check_segment[0] = isec_segment;
2642 check_segment[1] = sec
2643 ? _bfinfdpic_osec_to_segment (output_bfd, sec->output_section)
2648 if (check_segment[0] != check_segment[1] && IS_FDPIC (output_bfd))
2650 #if 1 /* If you take this out, remove the #error from fdpic-static-6.d
2651 in the ld testsuite. */
2652 /* This helps catch problems in GCC while we can't do more
2653 than static linking. The idea is to test whether the
2654 input file basename is crt0.o only once. */
2655 if (silence_segment_error == 1)
2656 silence_segment_error =
2657 (strlen (input_bfd->filename) == 6
2658 && strcmp (input_bfd->filename, "crt0.o") == 0)
2659 || (strlen (input_bfd->filename) > 6
2660 && strcmp (input_bfd->filename
2661 + strlen (input_bfd->filename) - 7,
2665 if (!silence_segment_error
2666 /* We don't want duplicate errors for undefined
2668 && !(picrel && picrel->symndx == -1
2669 && picrel->d.h->root.type == bfd_link_hash_undefined))
2670 info->callbacks->warning
2672 (info->shared || info->pie)
2673 ? _("relocations between different segments are not supported")
2674 : _("warning: relocation references a different segment"),
2675 name, input_bfd, input_section, rel->r_offset);
2676 if (!silence_segment_error && (info->shared || info->pie))
2678 elf_elfheader (output_bfd)->e_flags |= EF_BFIN_PIC;
2683 case R_BFIN_GOTOFFHI:
2684 /* We need the addend to be applied before we shift the
2686 relocation += rel->r_addend;
2689 case R_BFIN_FUNCDESC_GOTHI:
2690 case R_BFIN_FUNCDESC_GOTOFFHI:
2695 case R_BFIN_FUNCDESC_GOTLO:
2696 case R_BFIN_GOTOFFLO:
2697 case R_BFIN_FUNCDESC_GOTOFFLO:
2698 relocation &= 0xffff;
2708 case R_pcrel24_jump_l:
2709 if (! IS_FDPIC (output_bfd) || ! picrel->plt)
2713 /* When referencing a GOT entry, a function descriptor or a
2714 PLT, we don't want the addend to apply to the reference,
2715 but rather to the referenced symbol. The actual entry
2716 will have already been created taking the addend into
2717 account, so cancel it out here. */
2718 case R_BFIN_GOT17M4:
2721 case R_BFIN_FUNCDESC_GOT17M4:
2722 case R_BFIN_FUNCDESC_GOTHI:
2723 case R_BFIN_FUNCDESC_GOTLO:
2724 case R_BFIN_FUNCDESC_GOTOFF17M4:
2725 case R_BFIN_FUNCDESC_GOTOFFHI:
2726 case R_BFIN_FUNCDESC_GOTOFFLO:
2727 /* Note that we only want GOTOFFHI, not GOTOFFLO or GOTOFF17M4
2728 here, since we do want to apply the addend to the others.
2729 Note that we've applied the addend to GOTOFFHI before we
2730 shifted it right. */
2731 case R_BFIN_GOTOFFHI:
2732 relocation -= rel->r_addend;
2739 if (r_type == R_pcrel24
2740 || r_type == R_pcrel24_jump_l)
2743 bfd_vma address = rel->r_offset;
2745 relocation += rel->r_addend;
2747 /* Perform usual pc-relative correction. */
2748 relocation -= input_section->output_section->vma + input_section->output_offset;
2749 relocation -= address;
2751 /* We are getting reloc_entry->address 2 byte off from
2752 the start of instruction. Assuming absolute postion
2753 of the reloc data. But, following code had been written assuming
2754 reloc address is starting at begining of instruction.
2755 To compensate that I have increased the value of
2756 relocation by 1 (effectively 2) and used the addr -2 instead of addr. */
2763 x = bfd_get_16 (input_bfd, contents + address);
2764 x = (x & 0xff00) | ((relocation >> 16) & 0xff);
2765 bfd_put_16 (input_bfd, x, contents + address);
2767 x = bfd_get_16 (input_bfd, contents + address + 2);
2768 x = relocation & 0xFFFF;
2769 bfd_put_16 (input_bfd, x, contents + address + 2);
2773 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
2774 contents, rel->r_offset,
2775 relocation, rel->r_addend);
2777 if (r != bfd_reloc_ok)
2779 const char * msg = (const char *) NULL;
2783 case bfd_reloc_overflow:
2784 r = info->callbacks->reloc_overflow
2785 (info, (h ? &h->root : NULL), name, howto->name,
2786 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
2789 case bfd_reloc_undefined:
2790 r = info->callbacks->undefined_symbol
2791 (info, name, input_bfd, input_section, rel->r_offset, TRUE);
2794 case bfd_reloc_outofrange:
2795 msg = _("internal error: out of range error");
2798 case bfd_reloc_notsupported:
2799 msg = _("internal error: unsupported relocation error");
2802 case bfd_reloc_dangerous:
2803 msg = _("internal error: dangerous relocation");
2807 msg = _("internal error: unknown error");
2812 r = info->callbacks->warning
2813 (info, msg, name, input_bfd, input_section, rel->r_offset);
2824 bfin_relocate_section (bfd * output_bfd,
2825 struct bfd_link_info *info,
2827 asection * input_section,
2828 bfd_byte * contents,
2829 Elf_Internal_Rela * relocs,
2830 Elf_Internal_Sym * local_syms,
2831 asection ** local_sections)
2834 Elf_Internal_Shdr *symtab_hdr;
2835 struct elf_link_hash_entry **sym_hashes;
2836 bfd_vma *local_got_offsets;
2839 Elf_Internal_Rela *rel;
2840 Elf_Internal_Rela *relend;
2843 dynobj = elf_hash_table (info)->dynobj;
2844 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2845 sym_hashes = elf_sym_hashes (input_bfd);
2846 local_got_offsets = elf_local_got_offsets (input_bfd);
2852 relend = relocs + input_section->reloc_count;
2853 for (; rel < relend; rel++, i++)
2856 reloc_howto_type *howto;
2857 unsigned long r_symndx;
2858 struct elf_link_hash_entry *h;
2859 Elf_Internal_Sym *sym;
2861 bfd_vma relocation = 0;
2862 bfd_boolean unresolved_reloc;
2863 bfd_reloc_status_type r;
2866 r_type = ELF32_R_TYPE (rel->r_info);
2867 if (r_type < 0 || r_type >= 243)
2869 bfd_set_error (bfd_error_bad_value);
2873 if (r_type == R_BFIN_GNU_VTENTRY
2874 || r_type == R_BFIN_GNU_VTINHERIT)
2877 howto = bfin_reloc_type_lookup (input_bfd, r_type);
2880 bfd_set_error (bfd_error_bad_value);
2883 r_symndx = ELF32_R_SYM (rel->r_info);
2888 unresolved_reloc = FALSE;
2890 if (r_symndx < symtab_hdr->sh_info)
2892 sym = local_syms + r_symndx;
2893 sec = local_sections[r_symndx];
2894 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2900 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
2901 r_symndx, symtab_hdr, sym_hashes,
2903 unresolved_reloc, warned);
2906 if (sec != NULL && elf_discarded_section (sec))
2908 /* For relocs against symbols from removed linkonce sections,
2909 or sections discarded by a linker script, we just want the
2910 section contents zeroed. Avoid any special processing. */
2911 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
2917 if (info->relocatable)
2920 address = rel->r_offset;
2922 /* Then, process normally. */
2925 case R_BFIN_GNU_VTINHERIT:
2926 case R_BFIN_GNU_VTENTRY:
2927 return bfd_reloc_ok;
2930 /* Relocation is to the address of the entry for this symbol
2931 in the global offset table. */
2933 && strcmp (h->root.root.string, "__GLOBAL_OFFSET_TABLE_") == 0)
2936 /* Relocation is the offset of the entry for this symbol in
2937 the global offset table. */
2944 sgot = bfd_get_section_by_name (dynobj, ".got");
2945 BFD_ASSERT (sgot != NULL);
2952 off = h->got.offset;
2953 BFD_ASSERT (off != (bfd_vma) - 1);
2954 dyn = elf_hash_table (info)->dynamic_sections_created;
2956 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2963 /* This is actually a static link, or it is a
2964 -Bsymbolic link and the symbol is defined
2965 locally, or the symbol was forced to be local
2966 because of a version file.. We must initialize
2967 this entry in the global offset table. Since
2968 the offset must always be a multiple of 4, we
2969 use the least significant bit to record whether
2970 we have initialized it already.
2972 When doing a dynamic link, we create a .rela.got
2973 relocation entry to initialize the value. This
2974 is done in the finish_dynamic_symbol routine. */
2979 bfd_put_32 (output_bfd, relocation,
2980 sgot->contents + off);
2985 unresolved_reloc = FALSE;
2989 BFD_ASSERT (local_got_offsets != NULL);
2990 off = local_got_offsets[r_symndx];
2991 BFD_ASSERT (off != (bfd_vma) - 1);
2993 /* The offset must always be a multiple of 4. We use
2994 the least significant bit to record whether we have
2995 already generated the necessary reloc. */
3000 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
3005 Elf_Internal_Rela outrel;
3008 s = bfd_get_section_by_name (dynobj, ".rela.got");
3009 BFD_ASSERT (s != NULL);
3011 outrel.r_offset = (sgot->output_section->vma
3012 + sgot->output_offset + off);
3014 ELF32_R_INFO (0, R_pcrel24);
3015 outrel.r_addend = relocation;
3018 s->reloc_count++ * sizeof (Elf32_External_Rela);
3019 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
3022 local_got_offsets[r_symndx] |= 1;
3026 relocation = sgot->output_offset + off;
3028 /* bfin : preg = [preg + 17bitdiv4offset] relocation is div by 4. */
3034 case R_pcrel24_jump_l:
3038 relocation += rel->r_addend;
3040 /* Perform usual pc-relative correction. */
3041 relocation -= input_section->output_section->vma + input_section->output_offset;
3042 relocation -= address;
3044 /* We are getting reloc_entry->address 2 byte off from
3045 the start of instruction. Assuming absolute postion
3046 of the reloc data. But, following code had been written assuming
3047 reloc address is starting at begining of instruction.
3048 To compensate that I have increased the value of
3049 relocation by 1 (effectively 2) and used the addr -2 instead of addr. */
3056 x = bfd_get_16 (input_bfd, contents + address);
3057 x = (x & 0xff00) | ((relocation >> 16) & 0xff);
3058 bfd_put_16 (input_bfd, x, contents + address);
3060 x = bfd_get_16 (input_bfd, contents + address + 2);
3061 x = relocation & 0xFFFF;
3062 bfd_put_16 (input_bfd, x, contents + address + 2);
3069 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3071 relocation, rel->r_addend);
3076 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
3077 because such sections are not SEC_ALLOC and thus ld.so will
3078 not process them. */
3079 if (unresolved_reloc
3080 && !((input_section->flags & SEC_DEBUGGING) != 0 && h->def_dynamic))
3082 (*_bfd_error_handler)
3083 (_("%B(%A+0x%lx): unresolvable relocation against symbol `%s'"),
3085 input_section, (long) rel->r_offset, h->root.root.string);
3089 if (r != bfd_reloc_ok)
3094 name = h->root.root.string;
3097 name = bfd_elf_string_from_elf_section (input_bfd,
3098 symtab_hdr->sh_link,
3103 name = bfd_section_name (input_bfd, sec);
3106 if (r == bfd_reloc_overflow)
3108 if (!(info->callbacks->reloc_overflow
3109 (info, (h ? &h->root : NULL), name, howto->name,
3110 (bfd_vma) 0, input_bfd, input_section, rel->r_offset)))
3115 (*_bfd_error_handler)
3116 (_("%B(%A+0x%lx): reloc against `%s': error %d"),
3117 input_bfd, input_section,
3118 (long) rel->r_offset, name, (int) r);
3128 bfin_gc_mark_hook (asection * sec,
3129 struct bfd_link_info *info,
3130 Elf_Internal_Rela * rel,
3131 struct elf_link_hash_entry *h,
3132 Elf_Internal_Sym * sym)
3135 switch (ELF32_R_TYPE (rel->r_info))
3137 case R_BFIN_GNU_VTINHERIT:
3138 case R_BFIN_GNU_VTENTRY:
3142 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
3145 /* Update the got entry reference counts for the section being removed. */
3148 bfin_gc_sweep_hook (bfd * abfd,
3149 struct bfd_link_info *info,
3151 const Elf_Internal_Rela * relocs)
3153 Elf_Internal_Shdr *symtab_hdr;
3154 struct elf_link_hash_entry **sym_hashes;
3155 bfd_signed_vma *local_got_refcounts;
3156 const Elf_Internal_Rela *rel, *relend;
3161 dynobj = elf_hash_table (info)->dynobj;
3165 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3166 sym_hashes = elf_sym_hashes (abfd);
3167 local_got_refcounts = elf_local_got_refcounts (abfd);
3169 sgot = bfd_get_section_by_name (dynobj, ".got");
3170 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3172 relend = relocs + sec->reloc_count;
3173 for (rel = relocs; rel < relend; rel++)
3175 unsigned long r_symndx;
3176 struct elf_link_hash_entry *h;
3178 switch (ELF32_R_TYPE (rel->r_info))
3181 r_symndx = ELF32_R_SYM (rel->r_info);
3182 if (r_symndx >= symtab_hdr->sh_info)
3184 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3185 if (h->got.refcount > 0)
3188 if (h->got.refcount == 0)
3190 /* We don't need the .got entry any more. */
3192 srelgot->size -= sizeof (Elf32_External_Rela);
3196 else if (local_got_refcounts != NULL)
3198 if (local_got_refcounts[r_symndx] > 0)
3200 --local_got_refcounts[r_symndx];
3201 if (local_got_refcounts[r_symndx] == 0)
3203 /* We don't need the .got entry any more. */
3206 srelgot->size -= sizeof (Elf32_External_Rela);
3218 /* We need dynamic symbols for every section, since segments can
3219 relocate independently. */
3221 _bfinfdpic_link_omit_section_dynsym (bfd *output_bfd ATTRIBUTE_UNUSED,
3222 struct bfd_link_info *info
3224 asection *p ATTRIBUTE_UNUSED)
3226 switch (elf_section_data (p)->this_hdr.sh_type)
3230 /* If sh_type is yet undecided, assume it could be
3231 SHT_PROGBITS/SHT_NOBITS. */
3235 /* There shouldn't be section relative relocations
3236 against any other section. */
3242 /* Create a .got section, as well as its additional info field. This
3243 is almost entirely copied from
3244 elflink.c:_bfd_elf_create_got_section(). */
3247 _bfin_create_got_section (bfd *abfd, struct bfd_link_info *info)
3249 flagword flags, pltflags;
3251 struct elf_link_hash_entry *h;
3252 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3256 /* This function may be called more than once. */
3257 s = bfd_get_section_by_name (abfd, ".got");
3258 if (s != NULL && (s->flags & SEC_LINKER_CREATED) != 0)
3261 /* Machine specific: although pointers are 32-bits wide, we want the
3262 GOT to be aligned to a 64-bit boundary, such that function
3263 descriptors in it can be accessed with 64-bit loads and
3267 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3268 | SEC_LINKER_CREATED);
3271 s = bfd_make_section_with_flags (abfd, ".got", flags);
3273 || !bfd_set_section_alignment (abfd, s, ptralign))
3276 if (bed->want_got_plt)
3278 s = bfd_make_section_with_flags (abfd, ".got.plt", flags);
3280 || !bfd_set_section_alignment (abfd, s, ptralign))
3284 if (bed->want_got_sym)
3286 /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
3287 (or .got.plt) section. We don't do this in the linker script
3288 because we don't want to define the symbol if we are not creating
3289 a global offset table. */
3290 h = _bfd_elf_define_linkage_sym (abfd, info, s, "__GLOBAL_OFFSET_TABLE_");
3291 elf_hash_table (info)->hgot = h;
3295 /* Machine-specific: we want the symbol for executables as
3297 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3301 /* The first bit of the global offset table is the header. */
3302 s->size += bed->got_header_size;
3304 /* This is the machine-specific part. Create and initialize section
3305 data for the got. */
3306 if (IS_FDPIC (abfd))
3308 bfinfdpic_got_section (info) = s;
3309 bfinfdpic_relocs_info (info) = htab_try_create (1,
3310 bfinfdpic_relocs_info_hash,
3311 bfinfdpic_relocs_info_eq,
3313 if (! bfinfdpic_relocs_info (info))
3316 s = bfd_make_section_with_flags (abfd, ".rel.got",
3317 (flags | SEC_READONLY));
3319 || ! bfd_set_section_alignment (abfd, s, 2))
3322 bfinfdpic_gotrel_section (info) = s;
3324 /* Machine-specific. */
3325 s = bfd_make_section_with_flags (abfd, ".rofixup",
3326 (flags | SEC_READONLY));
3328 || ! bfd_set_section_alignment (abfd, s, 2))
3331 bfinfdpic_gotfixup_section (info) = s;
3338 flags = BSF_GLOBAL | BSF_WEAK;
3344 /* Make sure the got and plt sections exist, and that our pointers in
3345 the link hash table point to them. */
3348 elf32_bfinfdpic_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
3350 /* This is mostly copied from
3351 elflink.c:_bfd_elf_create_dynamic_sections(). */
3352 flagword flags, pltflags;
3354 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3356 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
3357 .rel[a].bss sections. */
3359 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3360 | SEC_LINKER_CREATED);
3363 pltflags |= SEC_CODE;
3364 if (bed->plt_not_loaded)
3365 pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS);
3366 if (bed->plt_readonly)
3367 pltflags |= SEC_READONLY;
3369 s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
3371 || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
3373 /* Blackfin-specific: remember it. */
3374 bfinfdpic_plt_section (info) = s;
3376 if (bed->want_plt_sym)
3378 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
3380 struct elf_link_hash_entry *h;
3381 struct bfd_link_hash_entry *bh = NULL;
3383 if (! (_bfd_generic_link_add_one_symbol
3384 (info, abfd, "__PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, 0, NULL,
3385 FALSE, get_elf_backend_data (abfd)->collect, &bh)))
3387 h = (struct elf_link_hash_entry *) bh;
3389 h->type = STT_OBJECT;
3391 if (! info->executable
3392 && ! bfd_elf_link_record_dynamic_symbol (info, h))
3396 /* Blackfin-specific: we want rel relocations for the plt. */
3397 s = bfd_make_section_with_flags (abfd, ".rel.plt", flags | SEC_READONLY);
3399 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
3401 /* Blackfin-specific: remember it. */
3402 bfinfdpic_pltrel_section (info) = s;
3404 /* Blackfin-specific: we want to create the GOT in the Blackfin way. */
3405 if (! _bfin_create_got_section (abfd, info))
3408 /* Blackfin-specific: make sure we created everything we wanted. */
3409 BFD_ASSERT (bfinfdpic_got_section (info) && bfinfdpic_gotrel_section (info)
3410 /* && bfinfdpic_gotfixup_section (info) */
3411 && bfinfdpic_plt_section (info)
3412 && bfinfdpic_pltrel_section (info));
3414 if (bed->want_dynbss)
3416 /* The .dynbss section is a place to put symbols which are defined
3417 by dynamic objects, are referenced by regular objects, and are
3418 not functions. We must allocate space for them in the process
3419 image and use a R_*_COPY reloc to tell the dynamic linker to
3420 initialize them at run time. The linker script puts the .dynbss
3421 section into the .bss section of the final image. */
3422 s = bfd_make_section_with_flags (abfd, ".dynbss",
3423 SEC_ALLOC | SEC_LINKER_CREATED);
3427 /* The .rel[a].bss section holds copy relocs. This section is not
3428 normally needed. We need to create it here, though, so that the
3429 linker will map it to an output section. We can't just create it
3430 only if we need it, because we will not know whether we need it
3431 until we have seen all the input files, and the first time the
3432 main linker code calls BFD after examining all the input files
3433 (size_dynamic_sections) the input sections have already been
3434 mapped to the output sections. If the section turns out not to
3435 be needed, we can discard it later. We will never need this
3436 section when generating a shared object, since they do not use
3440 s = bfd_make_section_with_flags (abfd,
3441 (bed->default_use_rela_p
3442 ? ".rela.bss" : ".rel.bss"),
3443 flags | SEC_READONLY);
3445 || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
3453 /* The name of the dynamic interpreter. This is put in the .interp
3456 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
3458 #define DEFAULT_STACK_SIZE 0x20000
3460 /* This structure is used to collect the number of entries present in
3461 each addressable range of the got. */
3462 struct _bfinfdpic_dynamic_got_info
3464 /* Several bits of information about the current link. */
3465 struct bfd_link_info *info;
3466 /* Total size needed for GOT entries within the 18- or 32-bit
3468 bfd_vma got17m4, gothilo;
3469 /* Total size needed for function descriptor entries within the 18-
3470 or 32-bit ranges. */
3471 bfd_vma fd17m4, fdhilo;
3472 /* Total size needed function descriptor entries referenced in PLT
3473 entries, that would be profitable to place in offsets close to
3474 the PIC register. */
3476 /* Total size needed by lazy PLT entries. */
3478 /* Number of relocations carried over from input object files. */
3479 unsigned long relocs;
3480 /* Number of fixups introduced by relocations in input object files. */
3481 unsigned long fixups;
3484 /* Compute the total GOT size required by each symbol in each range.
3485 Symbols may require up to 4 words in the GOT: an entry pointing to
3486 the symbol, an entry pointing to its function descriptor, and a
3487 private function descriptors taking two words. */
3490 _bfinfdpic_count_got_plt_entries (void **entryp, void *dinfo_)
3492 struct bfinfdpic_relocs_info *entry = *entryp;
3493 struct _bfinfdpic_dynamic_got_info *dinfo = dinfo_;
3494 unsigned relocs = 0, fixups = 0;
3496 /* Allocate space for a GOT entry pointing to the symbol. */
3498 dinfo->got17m4 += 4;
3499 else if (entry->gothilo)
3500 dinfo->gothilo += 4;
3505 /* Allocate space for a GOT entry pointing to the function
3507 if (entry->fdgot17m4)
3508 dinfo->got17m4 += 4;
3509 else if (entry->fdgothilo)
3510 dinfo->gothilo += 4;
3515 /* Decide whether we need a PLT entry, a function descriptor in the
3516 GOT, and a lazy PLT entry for this symbol. */
3517 entry->plt = entry->call
3518 && entry->symndx == -1 && ! BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)
3519 && elf_hash_table (dinfo->info)->dynamic_sections_created;
3520 entry->privfd = entry->plt
3521 || entry->fdgoff17m4 || entry->fdgoffhilo
3522 || ((entry->fd || entry->fdgot17m4 || entry->fdgothilo)
3523 && (entry->symndx != -1
3524 || BFINFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h)));
3525 entry->lazyplt = entry->privfd
3526 && entry->symndx == -1 && ! BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h)
3527 && ! (dinfo->info->flags & DF_BIND_NOW)
3528 && elf_hash_table (dinfo->info)->dynamic_sections_created;
3530 /* Allocate space for a function descriptor. */
3531 if (entry->fdgoff17m4)
3533 else if (entry->privfd && entry->plt)
3535 else if (entry->privfd)
3542 dinfo->lzplt += LZPLT_NORMAL_SIZE;
3544 if (!dinfo->info->executable || dinfo->info->pie)
3545 relocs = entry->relocs32 + entry->relocsfd + entry->relocsfdv;
3548 if (entry->symndx != -1 || BFINFDPIC_SYM_LOCAL (dinfo->info, entry->d.h))
3550 if (entry->symndx != -1
3551 || entry->d.h->root.type != bfd_link_hash_undefweak)
3552 fixups += entry->relocs32 + 2 * entry->relocsfdv;
3555 relocs += entry->relocs32 + entry->relocsfdv;
3557 if (entry->symndx != -1
3558 || BFINFDPIC_FUNCDESC_LOCAL (dinfo->info, entry->d.h))
3560 if (entry->symndx != -1
3561 || entry->d.h->root.type != bfd_link_hash_undefweak)
3562 fixups += entry->relocsfd;
3565 relocs += entry->relocsfd;
3568 entry->dynrelocs += relocs;
3569 entry->fixups += fixups;
3570 dinfo->relocs += relocs;
3571 dinfo->fixups += fixups;
3576 /* This structure is used to assign offsets to got entries, function
3577 descriptors, plt entries and lazy plt entries. */
3579 struct _bfinfdpic_dynamic_got_plt_info
3581 /* Summary information collected with _bfinfdpic_count_got_plt_entries. */
3582 struct _bfinfdpic_dynamic_got_info g;
3584 /* For each addressable range, we record a MAX (positive) and MIN
3585 (negative) value. CUR is used to assign got entries, and it's
3586 incremented from an initial positive value to MAX, then from MIN
3587 to FDCUR (unless FDCUR wraps around first). FDCUR is used to
3588 assign function descriptors, and it's decreased from an initial
3589 non-positive value to MIN, then from MAX down to CUR (unless CUR
3590 wraps around first). All of MIN, MAX, CUR and FDCUR always point
3591 to even words. ODD, if non-zero, indicates an odd word to be
3592 used for the next got entry, otherwise CUR is used and
3593 incremented by a pair of words, wrapping around when it reaches
3594 MAX. FDCUR is decremented (and wrapped) before the next function
3595 descriptor is chosen. FDPLT indicates the number of remaining
3596 slots that can be used for function descriptors used only by PLT
3598 struct _bfinfdpic_dynamic_got_alloc_data
3600 bfd_signed_vma max, cur, odd, fdcur, min;
3605 /* Determine the positive and negative ranges to be used by each
3606 offset range in the GOT. FDCUR and CUR, that must be aligned to a
3607 double-word boundary, are the minimum (negative) and maximum
3608 (positive) GOT offsets already used by previous ranges, except for
3609 an ODD entry that may have been left behind. GOT and FD indicate
3610 the size of GOT entries and function descriptors that must be
3611 placed within the range from -WRAP to WRAP. If there's room left,
3612 up to FDPLT bytes should be reserved for additional function
3615 inline static bfd_signed_vma
3616 _bfinfdpic_compute_got_alloc_data (struct _bfinfdpic_dynamic_got_alloc_data *gad,
3617 bfd_signed_vma fdcur,
3625 bfd_signed_vma wrapmin = -wrap;
3627 /* Start at the given initial points. */
3631 /* If we had an incoming odd word and we have any got entries that
3632 are going to use it, consume it, otherwise leave gad->odd at
3633 zero. We might force gad->odd to zero and return the incoming
3634 odd such that it is used by the next range, but then GOT entries
3635 might appear to be out of order and we wouldn't be able to
3636 shorten the GOT by one word if it turns out to end with an
3637 unpaired GOT entry. */
3647 /* If we're left with an unpaired GOT entry, compute its location
3648 such that we can return it. Otherwise, if got doesn't require an
3649 odd number of words here, either odd was already zero in the
3650 block above, or it was set to zero because got was non-zero, or
3651 got was already zero. In the latter case, we want the value of
3652 odd to carry over to the return statement, so we don't want to
3653 reset odd unless the condition below is true. */
3660 /* Compute the tentative boundaries of this range. */
3661 gad->max = cur + got;
3662 gad->min = fdcur - fd;
3665 /* If function descriptors took too much space, wrap some of them
3667 if (gad->min < wrapmin)
3669 gad->max += wrapmin - gad->min;
3672 /* If there is space left and we have function descriptors
3673 referenced in PLT entries that could take advantage of shorter
3674 offsets, place them here. */
3675 else if (fdplt && gad->min > wrapmin)
3678 if ((bfd_vma) (gad->min - wrapmin) < fdplt)
3679 fds = gad->min - wrapmin;
3688 /* If GOT entries took too much space, wrap some of them around.
3689 This may well cause gad->min to become lower than wrapmin. This
3690 will cause a relocation overflow later on, so we don't have to
3692 if ((bfd_vma) gad->max > wrap)
3694 gad->min -= gad->max - wrap;
3697 /* If there is more space left, try to place some more function
3698 descriptors for PLT entries. */
3699 else if (fdplt && (bfd_vma) gad->max < wrap)
3702 if ((bfd_vma) (wrap - gad->max) < fdplt)
3703 fds = wrap - gad->max;
3712 /* If odd was initially computed as an offset past the wrap point,
3715 odd = gad->min + odd - gad->max;
3717 /* _bfinfdpic_get_got_entry() below will always wrap gad->cur if needed
3718 before returning, so do it here too. This guarantees that,
3719 should cur and fdcur meet at the wrap point, they'll both be
3721 if (gad->cur == gad->max)
3722 gad->cur = gad->min;
3727 /* Compute the location of the next GOT entry, given the allocation
3728 data for a range. */
3730 inline static bfd_signed_vma
3731 _bfinfdpic_get_got_entry (struct _bfinfdpic_dynamic_got_alloc_data *gad)
3737 /* If there was an odd word left behind, use it. */
3743 /* Otherwise, use the word pointed to by cur, reserve the next
3744 as an odd word, and skip to the next pair of words, possibly
3747 gad->odd = gad->cur + 4;
3749 if (gad->cur == gad->max)
3750 gad->cur = gad->min;
3756 /* Compute the location of the next function descriptor entry in the
3757 GOT, given the allocation data for a range. */
3759 inline static bfd_signed_vma
3760 _bfinfdpic_get_fd_entry (struct _bfinfdpic_dynamic_got_alloc_data *gad)
3762 /* If we're at the bottom, wrap around, and only then allocate the
3763 next pair of words. */
3764 if (gad->fdcur == gad->min)
3765 gad->fdcur = gad->max;
3766 return gad->fdcur -= 8;
3769 /* Assign GOT offsets for every GOT entry and function descriptor.
3770 Doing everything in a single pass is tricky. */
3773 _bfinfdpic_assign_got_entries (void **entryp, void *info_)
3775 struct bfinfdpic_relocs_info *entry = *entryp;
3776 struct _bfinfdpic_dynamic_got_plt_info *dinfo = info_;
3779 entry->got_entry = _bfinfdpic_get_got_entry (&dinfo->got17m4);
3780 else if (entry->gothilo)
3781 entry->got_entry = _bfinfdpic_get_got_entry (&dinfo->gothilo);
3783 if (entry->fdgot17m4)
3784 entry->fdgot_entry = _bfinfdpic_get_got_entry (&dinfo->got17m4);
3785 else if (entry->fdgothilo)
3786 entry->fdgot_entry = _bfinfdpic_get_got_entry (&dinfo->gothilo);
3788 if (entry->fdgoff17m4)
3789 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4);
3790 else if (entry->plt && dinfo->got17m4.fdplt)
3792 dinfo->got17m4.fdplt -= 8;
3793 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4);
3795 else if (entry->plt)
3797 dinfo->gothilo.fdplt -= 8;
3798 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo);
3800 else if (entry->privfd)
3801 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo);
3806 /* Assign GOT offsets to private function descriptors used by PLT
3807 entries (or referenced by 32-bit offsets), as well as PLT entries
3808 and lazy PLT entries. */
3811 _bfinfdpic_assign_plt_entries (void **entryp, void *info_)
3813 struct bfinfdpic_relocs_info *entry = *entryp;
3814 struct _bfinfdpic_dynamic_got_plt_info *dinfo = info_;
3816 /* If this symbol requires a local function descriptor, allocate
3818 if (entry->privfd && entry->fd_entry == 0)
3820 if (dinfo->got17m4.fdplt)
3822 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->got17m4);
3823 dinfo->got17m4.fdplt -= 8;
3827 BFD_ASSERT (dinfo->gothilo.fdplt);
3828 entry->fd_entry = _bfinfdpic_get_fd_entry (&dinfo->gothilo);
3829 dinfo->gothilo.fdplt -= 8;
3837 /* We use the section's raw size to mark the location of the
3839 entry->plt_entry = bfinfdpic_plt_section (dinfo->g.info)->size;
3841 /* Figure out the length of this PLT entry based on the
3842 addressing mode we need to reach the function descriptor. */
3843 BFD_ASSERT (entry->fd_entry);
3844 if (entry->fd_entry >= -(1 << (18 - 1))
3845 && entry->fd_entry + 4 < (1 << (18 - 1)))
3850 bfinfdpic_plt_section (dinfo->g.info)->size += size;
3855 entry->lzplt_entry = dinfo->g.lzplt;
3856 dinfo->g.lzplt += LZPLT_NORMAL_SIZE;
3857 /* If this entry is the one that gets the resolver stub, account
3858 for the additional instruction. */
3859 if (entry->lzplt_entry % BFINFDPIC_LZPLT_BLOCK_SIZE
3860 == BFINFDPIC_LZPLT_RESOLV_LOC)
3861 dinfo->g.lzplt += LZPLT_RESOLVER_EXTRA;
3867 /* Follow indirect and warning hash entries so that each got entry
3868 points to the final symbol definition. P must point to a pointer
3869 to the hash table we're traversing. Since this traversal may
3870 modify the hash table, we set this pointer to NULL to indicate
3871 we've made a potentially-destructive change to the hash table, so
3872 the traversal must be restarted. */
3874 _bfinfdpic_resolve_final_relocs_info (void **entryp, void *p)
3876 struct bfinfdpic_relocs_info *entry = *entryp;
3879 if (entry->symndx == -1)
3881 struct elf_link_hash_entry *h = entry->d.h;
3882 struct bfinfdpic_relocs_info *oentry;
3884 while (h->root.type == bfd_link_hash_indirect
3885 || h->root.type == bfd_link_hash_warning)
3886 h = (struct elf_link_hash_entry *)h->root.u.i.link;
3888 if (entry->d.h == h)
3891 oentry = bfinfdpic_relocs_info_for_global (*htab, 0, h, entry->addend,
3896 /* Merge the two entries. */
3897 bfinfdpic_pic_merge_early_relocs_info (oentry, entry);
3898 htab_clear_slot (*htab, entryp);
3904 /* If we can't find this entry with the new bfd hash, re-insert
3905 it, and get the traversal restarted. */
3906 if (! htab_find (*htab, entry))
3908 htab_clear_slot (*htab, entryp);
3909 entryp = htab_find_slot (*htab, entry, INSERT);
3912 /* Abort the traversal, since the whole table may have
3913 moved, and leave it up to the parent to restart the
3915 *(htab_t *)p = NULL;
3923 /* Set the sizes of the dynamic sections. */
3926 elf32_bfinfdpic_size_dynamic_sections (bfd *output_bfd,
3927 struct bfd_link_info *info)
3931 struct _bfinfdpic_dynamic_got_plt_info gpinfo;
3935 dynobj = elf_hash_table (info)->dynobj;
3936 BFD_ASSERT (dynobj != NULL);
3938 if (elf_hash_table (info)->dynamic_sections_created)
3940 /* Set the contents of the .interp section to the interpreter. */
3941 if (info->executable)
3943 s = bfd_get_section_by_name (dynobj, ".interp");
3944 BFD_ASSERT (s != NULL);
3945 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3946 s->contents = (bfd_byte *) ELF_DYNAMIC_INTERPRETER;
3950 memset (&gpinfo, 0, sizeof (gpinfo));
3951 gpinfo.g.info = info;
3955 htab_t relocs = bfinfdpic_relocs_info (info);
3957 htab_traverse (relocs, _bfinfdpic_resolve_final_relocs_info, &relocs);
3959 if (relocs == bfinfdpic_relocs_info (info))
3963 htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_count_got_plt_entries,
3967 /* Compute the total size taken by entries in the 18-bit range,
3968 to tell how many PLT function descriptors we can bring into it
3969 without causing it to overflow. */
3970 limit = odd + gpinfo.g.got17m4 + gpinfo.g.fd17m4;
3971 if (limit < (bfd_vma)1 << 18)
3972 limit = ((bfd_vma)1 << 18) - limit;
3975 if (gpinfo.g.fdplt < limit)
3976 limit = gpinfo.g.fdplt;
3978 /* Determine the ranges of GOT offsets that we can use for each
3979 range of addressing modes. */
3980 odd = _bfinfdpic_compute_got_alloc_data (&gpinfo.got17m4,
3987 (bfd_vma)1 << (18-1));
3988 odd = _bfinfdpic_compute_got_alloc_data (&gpinfo.gothilo,
3994 gpinfo.g.fdplt - gpinfo.got17m4.fdplt,
3995 (bfd_vma)1 << (32-1));
3997 /* Now assign (most) GOT offsets. */
3998 htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_assign_got_entries,
4001 bfinfdpic_got_section (info)->size = gpinfo.gothilo.max
4002 - gpinfo.gothilo.min
4003 /* If an odd word is the last word of the GOT, we don't need this
4004 word to be part of the GOT. */
4005 - (odd + 4 == gpinfo.gothilo.max ? 4 : 0);
4006 if (bfinfdpic_got_section (info)->size == 0)
4007 bfinfdpic_got_section (info)->flags |= SEC_EXCLUDE;
4008 else if (bfinfdpic_got_section (info)->size == 12
4009 && ! elf_hash_table (info)->dynamic_sections_created)
4011 bfinfdpic_got_section (info)->flags |= SEC_EXCLUDE;
4012 bfinfdpic_got_section (info)->size = 0;
4016 bfinfdpic_got_section (info)->contents =
4017 (bfd_byte *) bfd_zalloc (dynobj,
4018 bfinfdpic_got_section (info)->size);
4019 if (bfinfdpic_got_section (info)->contents == NULL)
4023 if (elf_hash_table (info)->dynamic_sections_created)
4024 /* Subtract the number of lzplt entries, since those will generate
4025 relocations in the pltrel section. */
4026 bfinfdpic_gotrel_section (info)->size =
4027 (gpinfo.g.relocs - gpinfo.g.lzplt / LZPLT_NORMAL_SIZE)
4028 * get_elf_backend_data (output_bfd)->s->sizeof_rel;
4030 BFD_ASSERT (gpinfo.g.relocs == 0);
4031 if (bfinfdpic_gotrel_section (info)->size == 0)
4032 bfinfdpic_gotrel_section (info)->flags |= SEC_EXCLUDE;
4035 bfinfdpic_gotrel_section (info)->contents =
4036 (bfd_byte *) bfd_zalloc (dynobj,
4037 bfinfdpic_gotrel_section (info)->size);
4038 if (bfinfdpic_gotrel_section (info)->contents == NULL)
4042 bfinfdpic_gotfixup_section (info)->size = (gpinfo.g.fixups + 1) * 4;
4043 if (bfinfdpic_gotfixup_section (info)->size == 0)
4044 bfinfdpic_gotfixup_section (info)->flags |= SEC_EXCLUDE;
4047 bfinfdpic_gotfixup_section (info)->contents =
4048 (bfd_byte *) bfd_zalloc (dynobj,
4049 bfinfdpic_gotfixup_section (info)->size);
4050 if (bfinfdpic_gotfixup_section (info)->contents == NULL)
4054 if (elf_hash_table (info)->dynamic_sections_created)
4056 bfinfdpic_pltrel_section (info)->size =
4057 gpinfo.g.lzplt / LZPLT_NORMAL_SIZE * get_elf_backend_data (output_bfd)->s->sizeof_rel;
4058 if (bfinfdpic_pltrel_section (info)->size == 0)
4059 bfinfdpic_pltrel_section (info)->flags |= SEC_EXCLUDE;
4062 bfinfdpic_pltrel_section (info)->contents =
4063 (bfd_byte *) bfd_zalloc (dynobj,
4064 bfinfdpic_pltrel_section (info)->size);
4065 if (bfinfdpic_pltrel_section (info)->contents == NULL)
4070 /* Add 4 bytes for every block of at most 65535 lazy PLT entries,
4071 such that there's room for the additional instruction needed to
4072 call the resolver. Since _bfinfdpic_assign_got_entries didn't
4073 account for them, our block size is 4 bytes smaller than the real
4075 if (elf_hash_table (info)->dynamic_sections_created)
4077 bfinfdpic_plt_section (info)->size = gpinfo.g.lzplt
4078 + ((gpinfo.g.lzplt + (BFINFDPIC_LZPLT_BLOCK_SIZE - 4) - LZPLT_NORMAL_SIZE)
4079 / (BFINFDPIC_LZPLT_BLOCK_SIZE - 4) * LZPLT_RESOLVER_EXTRA);
4082 /* Reset it, such that _bfinfdpic_assign_plt_entries() can use it to
4083 actually assign lazy PLT entries addresses. */
4086 /* Save information that we're going to need to generate GOT and PLT
4088 bfinfdpic_got_initial_offset (info) = -gpinfo.gothilo.min;
4090 if (get_elf_backend_data (output_bfd)->want_got_sym)
4091 elf_hash_table (info)->hgot->root.u.def.value
4092 += bfinfdpic_got_initial_offset (info);
4094 if (elf_hash_table (info)->dynamic_sections_created)
4095 bfinfdpic_plt_initial_offset (info) =
4096 bfinfdpic_plt_section (info)->size;
4098 htab_traverse (bfinfdpic_relocs_info (info), _bfinfdpic_assign_plt_entries,
4101 /* Allocate the PLT section contents only after
4102 _bfinfdpic_assign_plt_entries has a chance to add the size of the
4103 non-lazy PLT entries. */
4104 if (elf_hash_table (info)->dynamic_sections_created)
4106 if (bfinfdpic_plt_section (info)->size == 0)
4107 bfinfdpic_plt_section (info)->flags |= SEC_EXCLUDE;
4110 bfinfdpic_plt_section (info)->contents =
4111 (bfd_byte *) bfd_zalloc (dynobj,
4112 bfinfdpic_plt_section (info)->size);
4113 if (bfinfdpic_plt_section (info)->contents == NULL)
4118 if (elf_hash_table (info)->dynamic_sections_created)
4120 if (bfinfdpic_got_section (info)->size)
4121 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0))
4124 if (bfinfdpic_pltrel_section (info)->size)
4125 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
4126 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_REL)
4127 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
4130 if (bfinfdpic_gotrel_section (info)->size)
4131 if (!_bfd_elf_add_dynamic_entry (info, DT_REL, 0)
4132 || !_bfd_elf_add_dynamic_entry (info, DT_RELSZ, 0)
4133 || !_bfd_elf_add_dynamic_entry (info, DT_RELENT,
4134 sizeof (Elf32_External_Rel)))
4142 elf32_bfinfdpic_always_size_sections (bfd *output_bfd,
4143 struct bfd_link_info *info)
4145 if (!info->relocatable)
4147 struct elf_link_hash_entry *h;
4149 /* Force a PT_GNU_STACK segment to be created. */
4150 if (! elf_tdata (output_bfd)->stack_flags)
4151 elf_tdata (output_bfd)->stack_flags = PF_R | PF_W | PF_X;
4153 /* Define __stacksize if it's not defined yet. */
4154 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
4155 FALSE, FALSE, FALSE);
4156 if (! h || h->root.type != bfd_link_hash_defined
4157 || h->type != STT_OBJECT
4160 struct bfd_link_hash_entry *bh = NULL;
4162 if (!(_bfd_generic_link_add_one_symbol
4163 (info, output_bfd, "__stacksize",
4164 BSF_GLOBAL, bfd_abs_section_ptr, DEFAULT_STACK_SIZE,
4165 (const char *) NULL, FALSE,
4166 get_elf_backend_data (output_bfd)->collect, &bh)))
4169 h = (struct elf_link_hash_entry *) bh;
4171 h->type = STT_OBJECT;
4179 elf32_bfinfdpic_modify_program_headers (bfd *output_bfd,
4180 struct bfd_link_info *info)
4182 struct elf_obj_tdata *tdata = elf_tdata (output_bfd);
4183 struct elf_segment_map *m;
4184 Elf_Internal_Phdr *p;
4186 /* objcopy and strip preserve what's already there using
4187 elf32_bfinfdpic_copy_private_bfd_data (). */
4191 for (p = tdata->phdr, m = tdata->segment_map; m != NULL; m = m->next, p++)
4192 if (m->p_type == PT_GNU_STACK)
4197 struct elf_link_hash_entry *h;
4199 /* Obtain the pointer to the __stacksize symbol. */
4200 h = elf_link_hash_lookup (elf_hash_table (info), "__stacksize",
4201 FALSE, FALSE, FALSE);
4204 while (h->root.type == bfd_link_hash_indirect
4205 || h->root.type == bfd_link_hash_warning)
4206 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4207 BFD_ASSERT (h->root.type == bfd_link_hash_defined);
4210 /* Set the header p_memsz from the symbol value. We
4211 intentionally ignore the symbol section. */
4212 if (h && h->root.type == bfd_link_hash_defined)
4213 p->p_memsz = h->root.u.def.value;
4215 p->p_memsz = DEFAULT_STACK_SIZE;
4224 elf32_bfinfdpic_finish_dynamic_sections (bfd *output_bfd,
4225 struct bfd_link_info *info)
4230 dynobj = elf_hash_table (info)->dynobj;
4232 if (bfinfdpic_got_section (info))
4234 BFD_ASSERT (bfinfdpic_gotrel_section (info)->size
4235 == (bfinfdpic_gotrel_section (info)->reloc_count
4236 * sizeof (Elf32_External_Rel)));
4238 if (bfinfdpic_gotfixup_section (info))
4240 struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot;
4241 bfd_vma got_value = hgot->root.u.def.value
4242 + hgot->root.u.def.section->output_section->vma
4243 + hgot->root.u.def.section->output_offset;
4245 _bfinfdpic_add_rofixup (output_bfd, bfinfdpic_gotfixup_section (info),
4248 if (bfinfdpic_gotfixup_section (info)->size
4249 != (bfinfdpic_gotfixup_section (info)->reloc_count * 4))
4251 (*_bfd_error_handler)
4252 ("LINKER BUG: .rofixup section size mismatch");
4257 if (elf_hash_table (info)->dynamic_sections_created)
4259 BFD_ASSERT (bfinfdpic_pltrel_section (info)->size
4260 == (bfinfdpic_pltrel_section (info)->reloc_count
4261 * sizeof (Elf32_External_Rel)));
4264 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4266 if (elf_hash_table (info)->dynamic_sections_created)
4268 Elf32_External_Dyn * dyncon;
4269 Elf32_External_Dyn * dynconend;
4271 BFD_ASSERT (sdyn != NULL);
4273 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4274 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4276 for (; dyncon < dynconend; dyncon++)
4278 Elf_Internal_Dyn dyn;
4280 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4288 dyn.d_un.d_ptr = bfinfdpic_got_section (info)->output_section->vma
4289 + bfinfdpic_got_section (info)->output_offset
4290 + bfinfdpic_got_initial_offset (info);
4291 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4295 dyn.d_un.d_ptr = bfinfdpic_pltrel_section (info)
4296 ->output_section->vma
4297 + bfinfdpic_pltrel_section (info)->output_offset;
4298 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4302 dyn.d_un.d_val = bfinfdpic_pltrel_section (info)->size;
4303 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
4312 /* Adjust a symbol defined by a dynamic object and referenced by a
4316 elf32_bfinfdpic_adjust_dynamic_symbol
4317 (struct bfd_link_info *info ATTRIBUTE_UNUSED,
4318 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
4322 dynobj = elf_hash_table (info)->dynobj;
4324 /* Make sure we know what is going on here. */
4325 BFD_ASSERT (dynobj != NULL
4326 && (h->u.weakdef != NULL
4329 && !h->def_regular)));
4331 /* If this is a weak symbol, and there is a real definition, the
4332 processor independent code will have arranged for us to see the
4333 real definition first, and we can just use the same value. */
4334 if (h->u.weakdef != NULL)
4336 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4337 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4338 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4339 h->root.u.def.value = h->u.weakdef->root.u.def.value;
4345 /* Perform any actions needed for dynamic symbols. */
4348 elf32_bfinfdpic_finish_dynamic_symbol
4349 (bfd *output_bfd ATTRIBUTE_UNUSED,
4350 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4351 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED,
4352 Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
4357 /* Decide whether to attempt to turn absptr or lsda encodings in
4358 shared libraries into pcrel within the given input section. */
4361 bfinfdpic_elf_use_relative_eh_frame
4362 (bfd *input_bfd ATTRIBUTE_UNUSED,
4363 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4364 asection *eh_frame_section ATTRIBUTE_UNUSED)
4366 /* We can't use PC-relative encodings in FDPIC binaries, in general. */
4370 /* Adjust the contents of an eh_frame_hdr section before they're output. */
4373 bfinfdpic_elf_encode_eh_address (bfd *abfd,
4374 struct bfd_link_info *info,
4375 asection *osec, bfd_vma offset,
4376 asection *loc_sec, bfd_vma loc_offset,
4379 struct elf_link_hash_entry *h;
4381 h = elf_hash_table (info)->hgot;
4382 BFD_ASSERT (h && h->root.type == bfd_link_hash_defined);
4384 if (! h || (_bfinfdpic_osec_to_segment (abfd, osec)
4385 == _bfinfdpic_osec_to_segment (abfd, loc_sec->output_section)))
4386 return _bfd_elf_encode_eh_address (abfd, info, osec, offset,
4387 loc_sec, loc_offset, encoded);
4389 BFD_ASSERT (_bfinfdpic_osec_to_segment (abfd, osec)
4390 == (_bfinfdpic_osec_to_segment
4391 (abfd, h->root.u.def.section->output_section)));
4393 *encoded = osec->vma + offset
4394 - (h->root.u.def.value
4395 + h->root.u.def.section->output_section->vma
4396 + h->root.u.def.section->output_offset);
4398 return DW_EH_PE_datarel | DW_EH_PE_sdata4;
4403 /* Look through the relocs for a section during the first phase.
4405 Besides handling virtual table relocs for gc, we have to deal with
4406 all sorts of PIC-related relocations. We describe below the
4407 general plan on how to handle such relocations, even though we only
4408 collect information at this point, storing them in hash tables for
4409 perusal of later passes.
4411 32 relocations are propagated to the linker output when creating
4412 position-independent output. LO16 and HI16 relocations are not
4413 supposed to be encountered in this case.
4415 LABEL16 should always be resolvable by the linker, since it's only
4418 LABEL24, on the other hand, is used by calls. If it turns out that
4419 the target of a call is a dynamic symbol, a PLT entry must be
4420 created for it, which triggers the creation of a private function
4421 descriptor and, unless lazy binding is disabled, a lazy PLT entry.
4423 GPREL relocations require the referenced symbol to be in the same
4424 segment as _gp, but this can only be checked later.
4426 All GOT, GOTOFF and FUNCDESC relocations require a .got section to
4427 exist. LABEL24 might as well, since it may require a PLT entry,
4428 that will require a got.
4430 Non-FUNCDESC GOT relocations require a GOT entry to be created
4431 regardless of whether the symbol is dynamic. However, since a
4432 global symbol that turns out to not be exported may have the same
4433 address of a non-dynamic symbol, we don't assign GOT entries at
4434 this point, such that we can share them in this case. A relocation
4435 for the GOT entry always has to be created, be it to offset a
4436 private symbol by the section load address, be it to get the symbol
4437 resolved dynamically.
4439 FUNCDESC GOT relocations require a GOT entry to be created, and
4440 handled as if a FUNCDESC relocation was applied to the GOT entry in
4443 FUNCDESC relocations referencing a symbol that turns out to NOT be
4444 dynamic cause a private function descriptor to be created. The
4445 FUNCDESC relocation then decays to a 32 relocation that points at
4446 the private descriptor. If the symbol is dynamic, the FUNCDESC
4447 relocation is propagated to the linker output, such that the
4448 dynamic linker creates the canonical descriptor, pointing to the
4449 dynamically-resolved definition of the function.
4451 Non-FUNCDESC GOTOFF relocations must always refer to non-dynamic
4452 symbols that are assigned to the same segment as the GOT, but we
4453 can only check this later, after we know the complete set of
4454 symbols defined and/or exported.
4456 FUNCDESC GOTOFF relocations require a function descriptor to be
4457 created and, unless lazy binding is disabled or the symbol is not
4458 dynamic, a lazy PLT entry. Since we can't tell at this point
4459 whether a symbol is going to be dynamic, we have to decide later
4460 whether to create a lazy PLT entry or bind the descriptor directly
4461 to the private function.
4463 FUNCDESC_VALUE relocations are not supposed to be present in object
4464 files, but they may very well be simply propagated to the linker
4465 output, since they have no side effect.
4468 A function descriptor always requires a FUNCDESC_VALUE relocation.
4469 Whether it's in .plt.rel or not depends on whether lazy binding is
4470 enabled and on whether the referenced symbol is dynamic.
4472 The existence of a lazy PLT requires the resolverStub lazy PLT
4473 entry to be present.
4476 As for assignment of GOT, PLT and lazy PLT entries, and private
4477 descriptors, we might do them all sequentially, but we can do
4478 better than that. For example, we can place GOT entries and
4479 private function descriptors referenced using 12-bit operands
4480 closer to the PIC register value, such that these relocations don't
4481 overflow. Those that are only referenced with LO16 relocations
4482 could come next, but we may as well place PLT-required function
4483 descriptors in the 12-bit range to make them shorter. Symbols
4484 referenced with LO16/HI16 may come next, but we may place
4485 additional function descriptors in the 16-bit range if we can
4486 reliably tell that we've already placed entries that are ever
4487 referenced with only LO16. PLT entries are therefore generated as
4488 small as possible, while not introducing relocation overflows in
4489 GOT or FUNCDESC_GOTOFF relocations. Lazy PLT entries could be
4490 generated before or after PLT entries, but not intermingled with
4491 them, such that we can have more lazy PLT entries in range for a
4492 branch to the resolverStub. The resolverStub should be emitted at
4493 the most distant location from the first lazy PLT entry such that
4494 it's still in range for a branch, or closer, if there isn't a need
4495 for so many lazy PLT entries. Additional lazy PLT entries may be
4496 emitted after the resolverStub, as long as branches are still in
4497 range. If the branch goes out of range, longer lazy PLT entries
4500 We could further optimize PLT and lazy PLT entries by giving them
4501 priority in assignment to closer-to-gr17 locations depending on the
4502 number of occurrences of references to them (assuming a function
4503 that's called more often is more important for performance, so its
4504 PLT entry should be faster), or taking hints from the compiler.
4505 Given infinite time and money... :-) */
4508 bfinfdpic_check_relocs (bfd *abfd, struct bfd_link_info *info,
4509 asection *sec, const Elf_Internal_Rela *relocs)
4511 Elf_Internal_Shdr *symtab_hdr;
4512 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
4513 const Elf_Internal_Rela *rel;
4514 const Elf_Internal_Rela *rel_end;
4516 struct bfinfdpic_relocs_info *picrel;
4518 if (info->relocatable)
4521 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4522 sym_hashes = elf_sym_hashes (abfd);
4523 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym);
4524 if (!elf_bad_symtab (abfd))
4525 sym_hashes_end -= symtab_hdr->sh_info;
4527 dynobj = elf_hash_table (info)->dynobj;
4528 rel_end = relocs + sec->reloc_count;
4529 for (rel = relocs; rel < rel_end; rel++)
4531 struct elf_link_hash_entry *h;
4532 unsigned long r_symndx;
4534 r_symndx = ELF32_R_SYM (rel->r_info);
4535 if (r_symndx < symtab_hdr->sh_info)
4538 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4540 switch (ELF32_R_TYPE (rel->r_info))
4542 case R_BFIN_GOT17M4:
4545 case R_BFIN_FUNCDESC_GOT17M4:
4546 case R_BFIN_FUNCDESC_GOTHI:
4547 case R_BFIN_FUNCDESC_GOTLO:
4548 case R_BFIN_GOTOFF17M4:
4549 case R_BFIN_GOTOFFHI:
4550 case R_BFIN_GOTOFFLO:
4551 case R_BFIN_FUNCDESC_GOTOFF17M4:
4552 case R_BFIN_FUNCDESC_GOTOFFHI:
4553 case R_BFIN_FUNCDESC_GOTOFFLO:
4554 case R_BFIN_FUNCDESC:
4555 case R_BFIN_FUNCDESC_VALUE:
4556 if (! IS_FDPIC (abfd))
4560 case R_pcrel24_jump_l:
4562 if (IS_FDPIC (abfd) && ! dynobj)
4564 elf_hash_table (info)->dynobj = dynobj = abfd;
4565 if (! _bfin_create_got_section (abfd, info))
4568 if (! IS_FDPIC (abfd))
4575 if (h->dynindx == -1)
4576 switch (ELF_ST_VISIBILITY (h->other))
4582 bfd_elf_link_record_dynamic_symbol (info, h);
4586 = bfinfdpic_relocs_info_for_global (bfinfdpic_relocs_info (info),
4588 rel->r_addend, INSERT);
4591 picrel = bfinfdpic_relocs_info_for_local (bfinfdpic_relocs_info
4592 (info), abfd, r_symndx,
4593 rel->r_addend, INSERT);
4603 switch (ELF32_R_TYPE (rel->r_info))
4606 case R_pcrel24_jump_l:
4607 if (IS_FDPIC (abfd))
4611 case R_BFIN_FUNCDESC_VALUE:
4612 picrel->relocsfdv++;
4613 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC)
4618 if (! IS_FDPIC (abfd))
4622 if (bfd_get_section_flags (abfd, sec) & SEC_ALLOC)
4626 case R_BFIN_GOT17M4:
4627 picrel->got17m4 = 1;
4632 picrel->gothilo = 1;
4635 case R_BFIN_FUNCDESC_GOT17M4:
4636 picrel->fdgot17m4 = 1;
4639 case R_BFIN_FUNCDESC_GOTHI:
4640 case R_BFIN_FUNCDESC_GOTLO:
4641 picrel->fdgothilo = 1;
4644 case R_BFIN_GOTOFF17M4:
4645 case R_BFIN_GOTOFFHI:
4646 case R_BFIN_GOTOFFLO:
4650 case R_BFIN_FUNCDESC_GOTOFF17M4:
4651 picrel->fdgoff17m4 = 1;
4654 case R_BFIN_FUNCDESC_GOTOFFHI:
4655 case R_BFIN_FUNCDESC_GOTOFFLO:
4656 picrel->fdgoffhilo = 1;
4659 case R_BFIN_FUNCDESC:
4664 /* This relocation describes the C++ object vtable hierarchy.
4665 Reconstruct it for later use during GC. */
4666 case R_BFIN_GNU_VTINHERIT:
4667 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4671 /* This relocation describes which C++ vtable entries are actually
4672 used. Record for later use during GC. */
4673 case R_BFIN_GNU_VTENTRY:
4674 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4680 case R_pcrel12_jump_s:
4686 (*_bfd_error_handler)
4687 (_("%B: unsupported relocation type %i"),
4688 abfd, ELF32_R_TYPE (rel->r_info));
4696 /* Set the right machine number for a Blackfin ELF file. */
4699 elf32_bfin_object_p (bfd *abfd)
4701 bfd_default_set_arch_mach (abfd, bfd_arch_bfin, 0);
4702 return (((elf_elfheader (abfd)->e_flags & EF_BFIN_FDPIC) != 0)
4703 == (IS_FDPIC (abfd)));
4707 elf32_bfin_set_private_flags (bfd * abfd, flagword flags)
4709 elf_elfheader (abfd)->e_flags = flags;
4710 elf_flags_init (abfd) = TRUE;
4714 /* Copy backend specific data from one object module to another. */
4717 bfin_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
4719 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4720 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4723 BFD_ASSERT (!elf_flags_init (obfd)
4724 || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
4726 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
4727 elf_flags_init (obfd) = TRUE;
4729 /* Copy object attributes. */
4730 _bfd_elf_copy_obj_attributes (ibfd, obfd);
4736 elf32_bfinfdpic_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
4740 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4741 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4744 if (! bfin_elf_copy_private_bfd_data (ibfd, obfd))
4747 if (! elf_tdata (ibfd) || ! elf_tdata (ibfd)->phdr
4748 || ! elf_tdata (obfd) || ! elf_tdata (obfd)->phdr)
4751 /* Copy the stack size. */
4752 for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++)
4753 if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK)
4755 Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i];
4757 for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++)
4758 if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK)
4760 memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr));
4762 /* Rewrite the phdrs, since we're only called after they
4763 were first written. */
4764 if (bfd_seek (obfd, (bfd_signed_vma) get_elf_backend_data (obfd)
4765 ->s->sizeof_ehdr, SEEK_SET) != 0
4766 || get_elf_backend_data (obfd)->s
4767 ->write_out_phdrs (obfd, elf_tdata (obfd)->phdr,
4768 elf_elfheader (obfd)->e_phnum) != 0)
4780 /* Display the flags field. */
4782 elf32_bfin_print_private_bfd_data (bfd * abfd, PTR ptr)
4784 FILE *file = (FILE *) ptr;
4787 BFD_ASSERT (abfd != NULL && ptr != NULL);
4789 /* Print normal ELF private data. */
4790 _bfd_elf_print_private_bfd_data (abfd, ptr);
4792 flags = elf_elfheader (abfd)->e_flags;
4794 /* xgettext:c-format */
4795 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4797 if (flags & EF_BFIN_PIC)
4798 fprintf (file, " -fpic");
4800 if (flags & EF_BFIN_FDPIC)
4801 fprintf (file, " -mfdpic");
4808 /* Merge backend specific data from an object file to the output
4809 object file when linking. */
4812 elf32_bfin_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
4814 flagword old_flags, old_partial;
4815 flagword new_flags, new_partial;
4816 bfd_boolean error = FALSE;
4818 new_flags = elf_elfheader (ibfd)->e_flags;
4819 old_flags = elf_elfheader (obfd)->e_flags;
4821 if (new_flags & EF_BFIN_FDPIC)
4822 new_flags &= ~EF_BFIN_PIC;
4825 (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s",
4826 old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no",
4827 bfd_get_filename (ibfd));
4830 if (!elf_flags_init (obfd)) /* First call, no flags set. */
4832 elf_flags_init (obfd) = TRUE;
4833 old_flags = new_flags;
4836 else if (new_flags == old_flags) /* Compatible flags are ok. */
4839 else /* Possibly incompatible flags. */
4841 /* We don't have to do anything if the pic flags are the same, or the new
4842 module(s) were compiled with -mlibrary-pic. */
4843 new_partial = (new_flags & EF_BFIN_PIC_FLAGS);
4844 old_partial = (old_flags & EF_BFIN_PIC_FLAGS);
4845 if (new_partial == old_partial)
4848 /* If we have mixtures of -fpic and -fPIC, or in both bits. */
4849 else if (new_partial != 0 && old_partial != 0)
4850 old_flags |= new_partial;
4852 /* One module was compiled for pic and the other was not, see if we have
4853 had any relocations that are not pic-safe. */
4855 old_flags |= new_partial;
4859 /* Update the old flags now with changes made above. */
4860 elf_elfheader (obfd)->e_flags = old_flags;
4862 if (((new_flags & EF_BFIN_FDPIC) == 0)
4863 != (! IS_FDPIC (ibfd)))
4866 if (IS_FDPIC (obfd))
4867 (*_bfd_error_handler)
4868 (_("%s: cannot link non-fdpic object file into fdpic executable"),
4869 bfd_get_filename (ibfd));
4871 (*_bfd_error_handler)
4872 (_("%s: cannot link fdpic object file into non-fdpic executable"),
4873 bfd_get_filename (ibfd));
4877 bfd_set_error (bfd_error_bad_value);
4882 /* bfin ELF linker hash entry. */
4884 struct bfin_link_hash_entry
4886 struct elf_link_hash_entry root;
4888 /* Number of PC relative relocs copied for this symbol. */
4889 struct bfin_pcrel_relocs_copied *pcrel_relocs_copied;
4892 /* bfin ELF linker hash table. */
4894 struct bfin_link_hash_table
4896 struct elf_link_hash_table root;
4898 /* Small local sym to section mapping cache. */
4899 struct sym_sec_cache sym_sec;
4902 #define bfin_hash_entry(ent) ((struct bfin_link_hash_entry *) (ent))
4904 static struct bfd_hash_entry *
4905 bfin_link_hash_newfunc (struct bfd_hash_entry *entry,
4906 struct bfd_hash_table *table, const char *string)
4908 struct bfd_hash_entry *ret = entry;
4910 /* Allocate the structure if it has not already been allocated by a
4913 ret = bfd_hash_allocate (table, sizeof (struct bfin_link_hash_entry));
4917 /* Call the allocation method of the superclass. */
4918 ret = _bfd_elf_link_hash_newfunc (ret, table, string);
4920 bfin_hash_entry (ret)->pcrel_relocs_copied = NULL;
4925 /* Create an bfin ELF linker hash table. */
4927 static struct bfd_link_hash_table *
4928 bfin_link_hash_table_create (bfd * abfd)
4930 struct bfin_link_hash_table *ret;
4931 bfd_size_type amt = sizeof (struct bfin_link_hash_table);
4933 ret = bfd_zalloc (abfd, amt);
4937 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
4938 bfin_link_hash_newfunc,
4939 sizeof (struct elf_link_hash_entry)))
4945 ret->sym_sec.abfd = NULL;
4947 return &ret->root.root;
4950 /* The size in bytes of an entry in the procedure linkage table. */
4952 /* Finish up the dynamic sections. */
4955 bfin_finish_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
4956 struct bfd_link_info *info)
4961 dynobj = elf_hash_table (info)->dynobj;
4963 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
4965 if (elf_hash_table (info)->dynamic_sections_created)
4967 Elf32_External_Dyn *dyncon, *dynconend;
4969 BFD_ASSERT (sdyn != NULL);
4971 dyncon = (Elf32_External_Dyn *) sdyn->contents;
4972 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
4973 for (; dyncon < dynconend; dyncon++)
4975 Elf_Internal_Dyn dyn;
4977 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
4985 /* Finish up dynamic symbol handling. We set the contents of various
4986 dynamic sections here. */
4989 bfin_finish_dynamic_symbol (bfd * output_bfd,
4990 struct bfd_link_info *info,
4991 struct elf_link_hash_entry *h,
4992 Elf_Internal_Sym * sym)
4996 dynobj = elf_hash_table (info)->dynobj;
4998 if (h->got.offset != (bfd_vma) - 1)
5002 Elf_Internal_Rela rela;
5005 /* This symbol has an entry in the global offset table.
5008 sgot = bfd_get_section_by_name (dynobj, ".got");
5009 srela = bfd_get_section_by_name (dynobj, ".rela.got");
5010 BFD_ASSERT (sgot != NULL && srela != NULL);
5012 rela.r_offset = (sgot->output_section->vma
5013 + sgot->output_offset
5014 + (h->got.offset & ~(bfd_vma) 1));
5016 /* If this is a -Bsymbolic link, and the symbol is defined
5017 locally, we just want to emit a RELATIVE reloc. Likewise if
5018 the symbol was forced to be local because of a version file.
5019 The entry in the global offset table will already have been
5020 initialized in the relocate_section function. */
5023 || h->dynindx == -1 || h->forced_local) && h->def_regular)
5025 fprintf(stderr, "*** check this relocation %s\n", __FUNCTION__);
5026 rela.r_info = ELF32_R_INFO (0, R_pcrel24);
5027 rela.r_addend = bfd_get_signed_32 (output_bfd,
5031 offset & ~(bfd_vma) 1)));
5035 bfd_put_32 (output_bfd, (bfd_vma) 0,
5036 sgot->contents + (h->got.offset & ~(bfd_vma) 1));
5037 rela.r_info = ELF32_R_INFO (h->dynindx, R_got);
5041 loc = srela->contents;
5042 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
5043 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5050 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
5051 if (strcmp (h->root.root.string, "__DYNAMIC") == 0
5052 || h == elf_hash_table (info)->hgot)
5053 sym->st_shndx = SHN_ABS;
5058 /* Adjust a symbol defined by a dynamic object and referenced by a
5059 regular object. The current definition is in some section of the
5060 dynamic object, but we're not including those sections. We have to
5061 change the definition to something the rest of the link can
5065 bfin_adjust_dynamic_symbol (struct bfd_link_info *info,
5066 struct elf_link_hash_entry *h)
5070 unsigned int power_of_two;
5072 dynobj = elf_hash_table (info)->dynobj;
5074 /* Make sure we know what is going on here. */
5075 BFD_ASSERT (dynobj != NULL
5077 || h->u.weakdef != NULL
5078 || (h->def_dynamic && h->ref_regular && !h->def_regular)));
5080 /* If this is a function, put it in the procedure linkage table. We
5081 will fill in the contents of the procedure linkage table later,
5082 when we know the address of the .got section. */
5083 if (h->type == STT_FUNC || h->needs_plt)
5088 /* If this is a weak symbol, and there is a real definition, the
5089 processor independent code will have arranged for us to see the
5090 real definition first, and we can just use the same value. */
5091 if (h->u.weakdef != NULL)
5093 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5094 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5095 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5096 h->root.u.def.value = h->u.weakdef->root.u.def.value;
5100 /* This is a reference to a symbol defined by a dynamic object which
5101 is not a function. */
5103 /* If we are creating a shared library, we must presume that the
5104 only references to the symbol are via the global offset table.
5105 For such cases we need not do anything here; the relocations will
5106 be handled correctly by relocate_section. */
5110 /* We must allocate the symbol in our .dynbss section, which will
5111 become part of the .bss section of the executable. There will be
5112 an entry for this symbol in the .dynsym section. The dynamic
5113 object will contain position independent code, so all references
5114 from the dynamic object to this symbol will go through the global
5115 offset table. The dynamic linker will use the .dynsym entry to
5116 determine the address it must put in the global offset table, so
5117 both the dynamic object and the regular object will refer to the
5118 same memory location for the variable. */
5120 s = bfd_get_section_by_name (dynobj, ".dynbss");
5121 BFD_ASSERT (s != NULL);
5123 /* We must generate a R_68K_COPY reloc to tell the dynamic linker to
5124 copy the initial value out of the dynamic object and into the
5125 runtime process image. We need to remember the offset into the
5126 .rela.bss section we are going to use. */
5127 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5131 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
5132 BFD_ASSERT (srel != NULL);
5133 srel->size += sizeof (Elf32_External_Rela);
5137 /* We need to figure out the alignment required for this symbol. I
5138 have no idea how ELF linkers handle this. */
5139 power_of_two = bfd_log2 (h->size);
5140 if (power_of_two > 3)
5143 /* Apply the required alignment. */
5144 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
5145 if (power_of_two > bfd_get_section_alignment (dynobj, s))
5147 if (!bfd_set_section_alignment (dynobj, s, power_of_two))
5151 /* Define the symbol as being at this point in the section. */
5152 h->root.u.def.section = s;
5153 h->root.u.def.value = s->size;
5155 /* Increment the section size to make room for the symbol. */
5161 /* The bfin linker needs to keep track of the number of relocs that it
5162 decides to copy in check_relocs for each symbol. This is so that it
5163 can discard PC relative relocs if it doesn't need them when linking
5164 with -Bsymbolic. We store the information in a field extending the
5165 regular ELF linker hash table. */
5167 /* This structure keeps track of the number of PC relative relocs we have
5168 copied for a given symbol. */
5170 struct bfin_pcrel_relocs_copied
5173 struct bfin_pcrel_relocs_copied *next;
5174 /* A section in dynobj. */
5176 /* Number of relocs copied in this section. */
5177 bfd_size_type count;
5180 /* This function is called via elf_link_hash_traverse if we are
5181 creating a shared object. In the -Bsymbolic case it discards the
5182 space allocated to copy PC relative relocs against symbols which
5183 are defined in regular objects. For the normal shared case, it
5184 discards space for pc-relative relocs that have become local due to
5185 symbol visibility changes. We allocated space for them in the
5186 check_relocs routine, but we won't fill them in in the
5187 relocate_section routine.
5189 We also check whether any of the remaining relocations apply
5190 against a readonly section, and set the DF_TEXTREL flag in this
5194 bfin_discard_copies (struct elf_link_hash_entry *h, PTR inf)
5196 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5197 struct bfin_pcrel_relocs_copied *s;
5199 if (h->root.type == bfd_link_hash_warning)
5200 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5202 if (!h->def_regular || (!info->symbolic && !h->forced_local))
5204 if ((info->flags & DF_TEXTREL) == 0)
5206 /* Look for relocations against read-only sections. */
5207 for (s = bfin_hash_entry (h)->pcrel_relocs_copied;
5208 s != NULL; s = s->next)
5209 if ((s->section->flags & SEC_READONLY) != 0)
5211 info->flags |= DF_TEXTREL;
5219 for (s = bfin_hash_entry (h)->pcrel_relocs_copied;
5220 s != NULL; s = s->next)
5221 s->section->size -= s->count * sizeof (Elf32_External_Rela);
5227 bfin_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
5228 struct bfd_link_info *info)
5234 dynobj = elf_hash_table (info)->dynobj;
5235 BFD_ASSERT (dynobj != NULL);
5237 if (elf_hash_table (info)->dynamic_sections_created)
5239 /* Set the contents of the .interp section to the interpreter. */
5240 if (info->executable)
5242 s = bfd_get_section_by_name (dynobj, ".interp");
5243 BFD_ASSERT (s != NULL);
5244 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
5245 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5250 /* We may have created entries in the .rela.got section.
5251 However, if we are not creating the dynamic sections, we will
5252 not actually use these entries. Reset the size of .rela.got,
5253 which will cause it to get stripped from the output file
5255 s = bfd_get_section_by_name (dynobj, ".rela.got");
5260 /* If this is a -Bsymbolic shared link, then we need to discard all
5261 PC relative relocs against symbols defined in a regular object.
5262 For the normal shared case we discard the PC relative relocs
5263 against symbols that have become local due to visibility changes.
5264 We allocated space for them in the check_relocs routine, but we
5265 will not fill them in in the relocate_section routine. */
5267 elf_link_hash_traverse (elf_hash_table (info),
5268 bfin_discard_copies, (PTR) info);
5270 /* The check_relocs and adjust_dynamic_symbol entry points have
5271 determined the sizes of the various dynamic sections. Allocate
5274 for (s = dynobj->sections; s != NULL; s = s->next)
5279 if ((s->flags & SEC_LINKER_CREATED) == 0)
5282 /* It's OK to base decisions on the section name, because none
5283 of the dynobj section names depend upon the input files. */
5284 name = bfd_get_section_name (dynobj, s);
5288 if (CONST_STRNEQ (name, ".rela"))
5292 /* If we don't need this section, strip it from the
5293 output file. This is mostly to handle .rela.bss and
5294 .rela.plt. We must create both sections in
5295 create_dynamic_sections, because they must be created
5296 before the linker maps input sections to output
5297 sections. The linker does that before
5298 adjust_dynamic_symbol is called, and it is that
5299 function which decides whether anything needs to go
5300 into these sections. */
5307 /* We use the reloc_count field as a counter if we need
5308 to copy relocs into the output file. */
5312 else if (! CONST_STRNEQ (name, ".got"))
5314 /* It's not one of our sections, so don't allocate space. */
5320 s->flags |= SEC_EXCLUDE;
5324 /* Allocate memory for the section contents. */
5325 /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
5326 Unused entries should be reclaimed before the section's contents
5327 are written out, but at the moment this does not happen. Thus in
5328 order to prevent writing out garbage, we initialise the section's
5329 contents to zero. */
5330 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
5331 if (s->contents == NULL && s->size != 0)
5335 if (elf_hash_table (info)->dynamic_sections_created)
5337 /* Add some entries to the .dynamic section. We fill in the
5338 values later, in bfin_finish_dynamic_sections, but we
5339 must add the entries now so that we get the correct size for
5340 the .dynamic section. The DT_DEBUG entry is filled in by the
5341 dynamic linker and used by the debugger. */
5342 #define add_dynamic_entry(TAG, VAL) \
5343 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
5347 if (!add_dynamic_entry (DT_DEBUG, 0))
5354 if (!add_dynamic_entry (DT_RELA, 0)
5355 || !add_dynamic_entry (DT_RELASZ, 0)
5356 || !add_dynamic_entry (DT_RELAENT,
5357 sizeof (Elf32_External_Rela)))
5361 if ((info->flags & DF_TEXTREL) != 0)
5363 if (!add_dynamic_entry (DT_TEXTREL, 0))
5367 #undef add_dynamic_entry
5372 /* Given a .data section and a .emreloc in-memory section, store
5373 relocation information into the .emreloc section which can be
5374 used at runtime to relocate the section. This is called by the
5375 linker when the --embedded-relocs switch is used. This is called
5376 after the add_symbols entry point has been called for all the
5377 objects, and before the final_link entry point is called. */
5379 bfd_boolean bfd_bfin_elf32_create_embedded_relocs
5380 PARAMS ((bfd *, struct bfd_link_info *, asection *, asection *, char **));
5383 bfd_bfin_elf32_create_embedded_relocs (
5385 struct bfd_link_info *info,
5390 Elf_Internal_Shdr *symtab_hdr;
5391 Elf_Internal_Sym *isymbuf = NULL;
5392 Elf_Internal_Rela *internal_relocs = NULL;
5393 Elf_Internal_Rela *irel, *irelend;
5397 BFD_ASSERT (! info->relocatable);
5401 if (datasec->reloc_count == 0)
5404 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5406 /* Get a copy of the native relocations. */
5407 internal_relocs = (_bfd_elf_link_read_relocs
5408 (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
5409 info->keep_memory));
5410 if (internal_relocs == NULL)
5413 amt = (bfd_size_type) datasec->reloc_count * 12;
5414 relsec->contents = (bfd_byte *) bfd_alloc (abfd, amt);
5415 if (relsec->contents == NULL)
5418 p = relsec->contents;
5420 irelend = internal_relocs + datasec->reloc_count;
5421 for (irel = internal_relocs; irel < irelend; irel++, p += 12)
5423 asection *targetsec;
5425 /* We are going to write a four byte longword into the runtime
5426 reloc section. The longword will be the address in the data
5427 section which must be relocated. It is followed by the name
5428 of the target section NUL-padded or truncated to 8
5431 /* We can only relocate absolute longword relocs at run time. */
5432 if (ELF32_R_TYPE (irel->r_info) != (int) R_byte4_data)
5434 *errmsg = _("unsupported reloc type");
5435 bfd_set_error (bfd_error_bad_value);
5439 /* Get the target section referred to by the reloc. */
5440 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
5442 /* A local symbol. */
5443 Elf_Internal_Sym *isym;
5445 /* Read this BFD's local symbols if we haven't done so already. */
5446 if (isymbuf == NULL)
5448 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
5449 if (isymbuf == NULL)
5450 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
5451 symtab_hdr->sh_info, 0,
5453 if (isymbuf == NULL)
5457 isym = isymbuf + ELF32_R_SYM (irel->r_info);
5458 targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
5463 struct elf_link_hash_entry *h;
5465 /* An external symbol. */
5466 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
5467 h = elf_sym_hashes (abfd)[indx];
5468 BFD_ASSERT (h != NULL);
5469 if (h->root.type == bfd_link_hash_defined
5470 || h->root.type == bfd_link_hash_defweak)
5471 targetsec = h->root.u.def.section;
5476 bfd_put_32 (abfd, irel->r_offset + datasec->output_offset, p);
5477 memset (p + 4, 0, 8);
5478 if (targetsec != NULL)
5479 strncpy ((char *) p + 4, targetsec->output_section->name, 8);
5482 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
5484 if (internal_relocs != NULL
5485 && elf_section_data (datasec)->relocs != internal_relocs)
5486 free (internal_relocs);
5490 if (isymbuf != NULL && symtab_hdr->contents != (unsigned char *) isymbuf)
5492 if (internal_relocs != NULL
5493 && elf_section_data (datasec)->relocs != internal_relocs)
5494 free (internal_relocs);
5498 #define TARGET_LITTLE_SYM bfd_elf32_bfin_vec
5499 #define TARGET_LITTLE_NAME "elf32-bfin"
5500 #define ELF_ARCH bfd_arch_bfin
5501 #define ELF_MACHINE_CODE EM_BLACKFIN
5502 #define ELF_MAXPAGESIZE 0x1000
5503 #define elf_symbol_leading_char '_'
5505 #define bfd_elf32_bfd_reloc_type_lookup bfin_bfd_reloc_type_lookup
5506 #define bfd_elf32_bfd_reloc_name_lookup \
5507 bfin_bfd_reloc_name_lookup
5508 #define elf_info_to_howto bfin_info_to_howto
5509 #define elf_info_to_howto_rel 0
5510 #define elf_backend_object_p elf32_bfin_object_p
5512 #define bfd_elf32_bfd_is_local_label_name \
5513 bfin_is_local_label_name
5514 #define bfin_hash_table(p) \
5515 ((struct bfin_link_hash_table *) (p)->hash)
5519 #define elf_backend_create_dynamic_sections \
5520 _bfd_elf_create_dynamic_sections
5521 #define bfd_elf32_bfd_link_hash_table_create \
5522 bfin_link_hash_table_create
5523 #define bfd_elf32_bfd_final_link bfd_elf_gc_common_final_link
5525 #define elf_backend_check_relocs bfin_check_relocs
5526 #define elf_backend_adjust_dynamic_symbol \
5527 bfin_adjust_dynamic_symbol
5528 #define elf_backend_size_dynamic_sections \
5529 bfin_size_dynamic_sections
5530 #define elf_backend_relocate_section bfin_relocate_section
5531 #define elf_backend_finish_dynamic_symbol \
5532 bfin_finish_dynamic_symbol
5533 #define elf_backend_finish_dynamic_sections \
5534 bfin_finish_dynamic_sections
5535 #define elf_backend_gc_mark_hook bfin_gc_mark_hook
5536 #define elf_backend_gc_sweep_hook bfin_gc_sweep_hook
5537 #define bfd_elf32_bfd_merge_private_bfd_data \
5538 elf32_bfin_merge_private_bfd_data
5539 #define bfd_elf32_bfd_set_private_flags \
5540 elf32_bfin_set_private_flags
5541 #define bfd_elf32_bfd_print_private_bfd_data \
5542 elf32_bfin_print_private_bfd_data
5543 #define elf_backend_reloc_type_class elf32_bfin_reloc_type_class
5544 #define elf_backend_can_gc_sections 1
5545 #define elf_backend_can_refcount 1
5546 #define elf_backend_want_got_plt 0
5547 #define elf_backend_plt_readonly 1
5548 #define elf_backend_want_plt_sym 0
5549 #define elf_backend_got_header_size 12
5550 #define elf_backend_rela_normal 1
5552 #include "elf32-target.h"
5554 #undef TARGET_LITTLE_SYM
5555 #define TARGET_LITTLE_SYM bfd_elf32_bfinfdpic_vec
5556 #undef TARGET_LITTLE_NAME
5557 #define TARGET_LITTLE_NAME "elf32-bfinfdpic"
5559 #define elf32_bed elf32_bfinfdpic_bed
5561 #undef elf_backend_gc_sweep_hook
5563 #undef elf_backend_got_header_size
5564 #define elf_backend_got_header_size 0
5566 #undef elf_backend_relocate_section
5567 #define elf_backend_relocate_section bfinfdpic_relocate_section
5568 #undef elf_backend_check_relocs
5569 #define elf_backend_check_relocs bfinfdpic_check_relocs
5571 #undef bfd_elf32_bfd_link_hash_table_create
5572 #define bfd_elf32_bfd_link_hash_table_create \
5573 bfinfdpic_elf_link_hash_table_create
5574 #undef elf_backend_always_size_sections
5575 #define elf_backend_always_size_sections \
5576 elf32_bfinfdpic_always_size_sections
5577 #undef elf_backend_modify_program_headers
5578 #define elf_backend_modify_program_headers \
5579 elf32_bfinfdpic_modify_program_headers
5580 #undef bfd_elf32_bfd_copy_private_bfd_data
5581 #define bfd_elf32_bfd_copy_private_bfd_data \
5582 elf32_bfinfdpic_copy_private_bfd_data
5584 #undef elf_backend_create_dynamic_sections
5585 #define elf_backend_create_dynamic_sections \
5586 elf32_bfinfdpic_create_dynamic_sections
5587 #undef elf_backend_adjust_dynamic_symbol
5588 #define elf_backend_adjust_dynamic_symbol \
5589 elf32_bfinfdpic_adjust_dynamic_symbol
5590 #undef elf_backend_size_dynamic_sections
5591 #define elf_backend_size_dynamic_sections \
5592 elf32_bfinfdpic_size_dynamic_sections
5593 #undef elf_backend_finish_dynamic_symbol
5594 #define elf_backend_finish_dynamic_symbol \
5595 elf32_bfinfdpic_finish_dynamic_symbol
5596 #undef elf_backend_finish_dynamic_sections
5597 #define elf_backend_finish_dynamic_sections \
5598 elf32_bfinfdpic_finish_dynamic_sections
5600 #undef elf_backend_can_make_relative_eh_frame
5601 #define elf_backend_can_make_relative_eh_frame \
5602 bfinfdpic_elf_use_relative_eh_frame
5603 #undef elf_backend_can_make_lsda_relative_eh_frame
5604 #define elf_backend_can_make_lsda_relative_eh_frame \
5605 bfinfdpic_elf_use_relative_eh_frame
5606 #undef elf_backend_encode_eh_address
5607 #define elf_backend_encode_eh_address \
5608 bfinfdpic_elf_encode_eh_address
5610 #undef elf_backend_may_use_rel_p
5611 #define elf_backend_may_use_rel_p 1
5612 #undef elf_backend_may_use_rela_p
5613 #define elf_backend_may_use_rela_p 1
5614 /* We use REL for dynamic relocations only. */
5615 #undef elf_backend_default_use_rela_p
5616 #define elf_backend_default_use_rela_p 1
5618 #undef elf_backend_omit_section_dynsym
5619 #define elf_backend_omit_section_dynsym _bfinfdpic_link_omit_section_dynsym
5621 #include "elf32-target.h"