1 /* 32-bit ELF support for ARM
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
3 2008 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
24 #include "libiberty.h"
27 #include "elf-vxworks.h"
30 /* Return the relocation section associated with NAME. HTAB is the
31 bfd's elf32_arm_link_hash_entry. */
32 #define RELOC_SECTION(HTAB, NAME) \
33 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
35 /* Return size of a relocation entry. HTAB is the bfd's
36 elf32_arm_link_hash_entry. */
37 #define RELOC_SIZE(HTAB) \
39 ? sizeof (Elf32_External_Rel) \
40 : sizeof (Elf32_External_Rela))
42 /* Return function to swap relocations in. HTAB is the bfd's
43 elf32_arm_link_hash_entry. */
44 #define SWAP_RELOC_IN(HTAB) \
46 ? bfd_elf32_swap_reloc_in \
47 : bfd_elf32_swap_reloca_in)
49 /* Return function to swap relocations out. HTAB is the bfd's
50 elf32_arm_link_hash_entry. */
51 #define SWAP_RELOC_OUT(HTAB) \
53 ? bfd_elf32_swap_reloc_out \
54 : bfd_elf32_swap_reloca_out)
56 #define elf_info_to_howto 0
57 #define elf_info_to_howto_rel elf32_arm_info_to_howto
59 #define ARM_ELF_ABI_VERSION 0
60 #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
62 static struct elf_backend_data elf32_arm_vxworks_bed;
64 /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
65 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
68 static reloc_howto_type elf32_arm_howto_table_1[] =
71 HOWTO (R_ARM_NONE, /* type */
73 0, /* size (0 = byte, 1 = short, 2 = long) */
75 FALSE, /* pc_relative */
77 complain_overflow_dont,/* complain_on_overflow */
78 bfd_elf_generic_reloc, /* special_function */
79 "R_ARM_NONE", /* name */
80 FALSE, /* partial_inplace */
83 FALSE), /* pcrel_offset */
85 HOWTO (R_ARM_PC24, /* type */
87 2, /* size (0 = byte, 1 = short, 2 = long) */
89 TRUE, /* pc_relative */
91 complain_overflow_signed,/* complain_on_overflow */
92 bfd_elf_generic_reloc, /* special_function */
93 "R_ARM_PC24", /* name */
94 FALSE, /* partial_inplace */
95 0x00ffffff, /* src_mask */
96 0x00ffffff, /* dst_mask */
97 TRUE), /* pcrel_offset */
100 HOWTO (R_ARM_ABS32, /* type */
102 2, /* size (0 = byte, 1 = short, 2 = long) */
104 FALSE, /* pc_relative */
106 complain_overflow_bitfield,/* complain_on_overflow */
107 bfd_elf_generic_reloc, /* special_function */
108 "R_ARM_ABS32", /* name */
109 FALSE, /* partial_inplace */
110 0xffffffff, /* src_mask */
111 0xffffffff, /* dst_mask */
112 FALSE), /* pcrel_offset */
114 /* standard 32bit pc-relative reloc */
115 HOWTO (R_ARM_REL32, /* type */
117 2, /* size (0 = byte, 1 = short, 2 = long) */
119 TRUE, /* pc_relative */
121 complain_overflow_bitfield,/* complain_on_overflow */
122 bfd_elf_generic_reloc, /* special_function */
123 "R_ARM_REL32", /* name */
124 FALSE, /* partial_inplace */
125 0xffffffff, /* src_mask */
126 0xffffffff, /* dst_mask */
127 TRUE), /* pcrel_offset */
129 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
130 HOWTO (R_ARM_LDR_PC_G0, /* type */
132 0, /* size (0 = byte, 1 = short, 2 = long) */
134 TRUE, /* pc_relative */
136 complain_overflow_dont,/* complain_on_overflow */
137 bfd_elf_generic_reloc, /* special_function */
138 "R_ARM_LDR_PC_G0", /* name */
139 FALSE, /* partial_inplace */
140 0xffffffff, /* src_mask */
141 0xffffffff, /* dst_mask */
142 TRUE), /* pcrel_offset */
144 /* 16 bit absolute */
145 HOWTO (R_ARM_ABS16, /* type */
147 1, /* size (0 = byte, 1 = short, 2 = long) */
149 FALSE, /* pc_relative */
151 complain_overflow_bitfield,/* complain_on_overflow */
152 bfd_elf_generic_reloc, /* special_function */
153 "R_ARM_ABS16", /* name */
154 FALSE, /* partial_inplace */
155 0x0000ffff, /* src_mask */
156 0x0000ffff, /* dst_mask */
157 FALSE), /* pcrel_offset */
159 /* 12 bit absolute */
160 HOWTO (R_ARM_ABS12, /* type */
162 2, /* size (0 = byte, 1 = short, 2 = long) */
164 FALSE, /* pc_relative */
166 complain_overflow_bitfield,/* complain_on_overflow */
167 bfd_elf_generic_reloc, /* special_function */
168 "R_ARM_ABS12", /* name */
169 FALSE, /* partial_inplace */
170 0x00000fff, /* src_mask */
171 0x00000fff, /* dst_mask */
172 FALSE), /* pcrel_offset */
174 HOWTO (R_ARM_THM_ABS5, /* type */
176 1, /* size (0 = byte, 1 = short, 2 = long) */
178 FALSE, /* pc_relative */
180 complain_overflow_bitfield,/* complain_on_overflow */
181 bfd_elf_generic_reloc, /* special_function */
182 "R_ARM_THM_ABS5", /* name */
183 FALSE, /* partial_inplace */
184 0x000007e0, /* src_mask */
185 0x000007e0, /* dst_mask */
186 FALSE), /* pcrel_offset */
189 HOWTO (R_ARM_ABS8, /* type */
191 0, /* size (0 = byte, 1 = short, 2 = long) */
193 FALSE, /* pc_relative */
195 complain_overflow_bitfield,/* complain_on_overflow */
196 bfd_elf_generic_reloc, /* special_function */
197 "R_ARM_ABS8", /* name */
198 FALSE, /* partial_inplace */
199 0x000000ff, /* src_mask */
200 0x000000ff, /* dst_mask */
201 FALSE), /* pcrel_offset */
203 HOWTO (R_ARM_SBREL32, /* type */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
207 FALSE, /* pc_relative */
209 complain_overflow_dont,/* complain_on_overflow */
210 bfd_elf_generic_reloc, /* special_function */
211 "R_ARM_SBREL32", /* name */
212 FALSE, /* partial_inplace */
213 0xffffffff, /* src_mask */
214 0xffffffff, /* dst_mask */
215 FALSE), /* pcrel_offset */
217 HOWTO (R_ARM_THM_CALL, /* type */
219 2, /* size (0 = byte, 1 = short, 2 = long) */
221 TRUE, /* pc_relative */
223 complain_overflow_signed,/* complain_on_overflow */
224 bfd_elf_generic_reloc, /* special_function */
225 "R_ARM_THM_CALL", /* name */
226 FALSE, /* partial_inplace */
227 0x07ff07ff, /* src_mask */
228 0x07ff07ff, /* dst_mask */
229 TRUE), /* pcrel_offset */
231 HOWTO (R_ARM_THM_PC8, /* type */
233 1, /* size (0 = byte, 1 = short, 2 = long) */
235 TRUE, /* pc_relative */
237 complain_overflow_signed,/* complain_on_overflow */
238 bfd_elf_generic_reloc, /* special_function */
239 "R_ARM_THM_PC8", /* name */
240 FALSE, /* partial_inplace */
241 0x000000ff, /* src_mask */
242 0x000000ff, /* dst_mask */
243 TRUE), /* pcrel_offset */
245 HOWTO (R_ARM_BREL_ADJ, /* type */
247 1, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE, /* pc_relative */
251 complain_overflow_signed,/* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_ARM_BREL_ADJ", /* name */
254 FALSE, /* partial_inplace */
255 0xffffffff, /* src_mask */
256 0xffffffff, /* dst_mask */
257 FALSE), /* pcrel_offset */
259 HOWTO (R_ARM_SWI24, /* type */
261 0, /* size (0 = byte, 1 = short, 2 = long) */
263 FALSE, /* pc_relative */
265 complain_overflow_signed,/* complain_on_overflow */
266 bfd_elf_generic_reloc, /* special_function */
267 "R_ARM_SWI24", /* name */
268 FALSE, /* partial_inplace */
269 0x00000000, /* src_mask */
270 0x00000000, /* dst_mask */
271 FALSE), /* pcrel_offset */
273 HOWTO (R_ARM_THM_SWI8, /* type */
275 0, /* size (0 = byte, 1 = short, 2 = long) */
277 FALSE, /* pc_relative */
279 complain_overflow_signed,/* complain_on_overflow */
280 bfd_elf_generic_reloc, /* special_function */
281 "R_ARM_SWI8", /* name */
282 FALSE, /* partial_inplace */
283 0x00000000, /* src_mask */
284 0x00000000, /* dst_mask */
285 FALSE), /* pcrel_offset */
287 /* BLX instruction for the ARM. */
288 HOWTO (R_ARM_XPC25, /* type */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
292 TRUE, /* pc_relative */
294 complain_overflow_signed,/* complain_on_overflow */
295 bfd_elf_generic_reloc, /* special_function */
296 "R_ARM_XPC25", /* name */
297 FALSE, /* partial_inplace */
298 0x00ffffff, /* src_mask */
299 0x00ffffff, /* dst_mask */
300 TRUE), /* pcrel_offset */
302 /* BLX instruction for the Thumb. */
303 HOWTO (R_ARM_THM_XPC22, /* type */
305 2, /* size (0 = byte, 1 = short, 2 = long) */
307 TRUE, /* pc_relative */
309 complain_overflow_signed,/* complain_on_overflow */
310 bfd_elf_generic_reloc, /* special_function */
311 "R_ARM_THM_XPC22", /* name */
312 FALSE, /* partial_inplace */
313 0x07ff07ff, /* src_mask */
314 0x07ff07ff, /* dst_mask */
315 TRUE), /* pcrel_offset */
317 /* Dynamic TLS relocations. */
319 HOWTO (R_ARM_TLS_DTPMOD32, /* type */
321 2, /* size (0 = byte, 1 = short, 2 = long) */
323 FALSE, /* pc_relative */
325 complain_overflow_bitfield,/* complain_on_overflow */
326 bfd_elf_generic_reloc, /* special_function */
327 "R_ARM_TLS_DTPMOD32", /* name */
328 TRUE, /* partial_inplace */
329 0xffffffff, /* src_mask */
330 0xffffffff, /* dst_mask */
331 FALSE), /* pcrel_offset */
333 HOWTO (R_ARM_TLS_DTPOFF32, /* type */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
337 FALSE, /* pc_relative */
339 complain_overflow_bitfield,/* complain_on_overflow */
340 bfd_elf_generic_reloc, /* special_function */
341 "R_ARM_TLS_DTPOFF32", /* name */
342 TRUE, /* partial_inplace */
343 0xffffffff, /* src_mask */
344 0xffffffff, /* dst_mask */
345 FALSE), /* pcrel_offset */
347 HOWTO (R_ARM_TLS_TPOFF32, /* type */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
351 FALSE, /* pc_relative */
353 complain_overflow_bitfield,/* complain_on_overflow */
354 bfd_elf_generic_reloc, /* special_function */
355 "R_ARM_TLS_TPOFF32", /* name */
356 TRUE, /* partial_inplace */
357 0xffffffff, /* src_mask */
358 0xffffffff, /* dst_mask */
359 FALSE), /* pcrel_offset */
361 /* Relocs used in ARM Linux */
363 HOWTO (R_ARM_COPY, /* type */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
367 FALSE, /* pc_relative */
369 complain_overflow_bitfield,/* complain_on_overflow */
370 bfd_elf_generic_reloc, /* special_function */
371 "R_ARM_COPY", /* name */
372 TRUE, /* partial_inplace */
373 0xffffffff, /* src_mask */
374 0xffffffff, /* dst_mask */
375 FALSE), /* pcrel_offset */
377 HOWTO (R_ARM_GLOB_DAT, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 FALSE, /* pc_relative */
383 complain_overflow_bitfield,/* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_ARM_GLOB_DAT", /* name */
386 TRUE, /* partial_inplace */
387 0xffffffff, /* src_mask */
388 0xffffffff, /* dst_mask */
389 FALSE), /* pcrel_offset */
391 HOWTO (R_ARM_JUMP_SLOT, /* type */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
395 FALSE, /* pc_relative */
397 complain_overflow_bitfield,/* complain_on_overflow */
398 bfd_elf_generic_reloc, /* special_function */
399 "R_ARM_JUMP_SLOT", /* name */
400 TRUE, /* partial_inplace */
401 0xffffffff, /* src_mask */
402 0xffffffff, /* dst_mask */
403 FALSE), /* pcrel_offset */
405 HOWTO (R_ARM_RELATIVE, /* type */
407 2, /* size (0 = byte, 1 = short, 2 = long) */
409 FALSE, /* pc_relative */
411 complain_overflow_bitfield,/* complain_on_overflow */
412 bfd_elf_generic_reloc, /* special_function */
413 "R_ARM_RELATIVE", /* name */
414 TRUE, /* partial_inplace */
415 0xffffffff, /* src_mask */
416 0xffffffff, /* dst_mask */
417 FALSE), /* pcrel_offset */
419 HOWTO (R_ARM_GOTOFF32, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 FALSE, /* pc_relative */
425 complain_overflow_bitfield,/* complain_on_overflow */
426 bfd_elf_generic_reloc, /* special_function */
427 "R_ARM_GOTOFF32", /* name */
428 TRUE, /* partial_inplace */
429 0xffffffff, /* src_mask */
430 0xffffffff, /* dst_mask */
431 FALSE), /* pcrel_offset */
433 HOWTO (R_ARM_GOTPC, /* type */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
437 TRUE, /* pc_relative */
439 complain_overflow_bitfield,/* complain_on_overflow */
440 bfd_elf_generic_reloc, /* special_function */
441 "R_ARM_GOTPC", /* name */
442 TRUE, /* partial_inplace */
443 0xffffffff, /* src_mask */
444 0xffffffff, /* dst_mask */
445 TRUE), /* pcrel_offset */
447 HOWTO (R_ARM_GOT32, /* type */
449 2, /* size (0 = byte, 1 = short, 2 = long) */
451 FALSE, /* pc_relative */
453 complain_overflow_bitfield,/* complain_on_overflow */
454 bfd_elf_generic_reloc, /* special_function */
455 "R_ARM_GOT32", /* name */
456 TRUE, /* partial_inplace */
457 0xffffffff, /* src_mask */
458 0xffffffff, /* dst_mask */
459 FALSE), /* pcrel_offset */
461 HOWTO (R_ARM_PLT32, /* type */
463 2, /* size (0 = byte, 1 = short, 2 = long) */
465 TRUE, /* pc_relative */
467 complain_overflow_bitfield,/* complain_on_overflow */
468 bfd_elf_generic_reloc, /* special_function */
469 "R_ARM_PLT32", /* name */
470 FALSE, /* partial_inplace */
471 0x00ffffff, /* src_mask */
472 0x00ffffff, /* dst_mask */
473 TRUE), /* pcrel_offset */
475 HOWTO (R_ARM_CALL, /* type */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
479 TRUE, /* pc_relative */
481 complain_overflow_signed,/* complain_on_overflow */
482 bfd_elf_generic_reloc, /* special_function */
483 "R_ARM_CALL", /* name */
484 FALSE, /* partial_inplace */
485 0x00ffffff, /* src_mask */
486 0x00ffffff, /* dst_mask */
487 TRUE), /* pcrel_offset */
489 HOWTO (R_ARM_JUMP24, /* type */
491 2, /* size (0 = byte, 1 = short, 2 = long) */
493 TRUE, /* pc_relative */
495 complain_overflow_signed,/* complain_on_overflow */
496 bfd_elf_generic_reloc, /* special_function */
497 "R_ARM_JUMP24", /* name */
498 FALSE, /* partial_inplace */
499 0x00ffffff, /* src_mask */
500 0x00ffffff, /* dst_mask */
501 TRUE), /* pcrel_offset */
503 HOWTO (R_ARM_THM_JUMP24, /* type */
505 2, /* size (0 = byte, 1 = short, 2 = long) */
507 TRUE, /* pc_relative */
509 complain_overflow_signed,/* complain_on_overflow */
510 bfd_elf_generic_reloc, /* special_function */
511 "R_ARM_THM_JUMP24", /* name */
512 FALSE, /* partial_inplace */
513 0x07ff2fff, /* src_mask */
514 0x07ff2fff, /* dst_mask */
515 TRUE), /* pcrel_offset */
517 HOWTO (R_ARM_BASE_ABS, /* type */
519 2, /* size (0 = byte, 1 = short, 2 = long) */
521 FALSE, /* pc_relative */
523 complain_overflow_dont,/* complain_on_overflow */
524 bfd_elf_generic_reloc, /* special_function */
525 "R_ARM_BASE_ABS", /* name */
526 FALSE, /* partial_inplace */
527 0xffffffff, /* src_mask */
528 0xffffffff, /* dst_mask */
529 FALSE), /* pcrel_offset */
531 HOWTO (R_ARM_ALU_PCREL7_0, /* type */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
535 TRUE, /* pc_relative */
537 complain_overflow_dont,/* complain_on_overflow */
538 bfd_elf_generic_reloc, /* special_function */
539 "R_ARM_ALU_PCREL_7_0", /* name */
540 FALSE, /* partial_inplace */
541 0x00000fff, /* src_mask */
542 0x00000fff, /* dst_mask */
543 TRUE), /* pcrel_offset */
545 HOWTO (R_ARM_ALU_PCREL15_8, /* type */
547 2, /* size (0 = byte, 1 = short, 2 = long) */
549 TRUE, /* pc_relative */
551 complain_overflow_dont,/* complain_on_overflow */
552 bfd_elf_generic_reloc, /* special_function */
553 "R_ARM_ALU_PCREL_15_8",/* name */
554 FALSE, /* partial_inplace */
555 0x00000fff, /* src_mask */
556 0x00000fff, /* dst_mask */
557 TRUE), /* pcrel_offset */
559 HOWTO (R_ARM_ALU_PCREL23_15, /* type */
561 2, /* size (0 = byte, 1 = short, 2 = long) */
563 TRUE, /* pc_relative */
565 complain_overflow_dont,/* complain_on_overflow */
566 bfd_elf_generic_reloc, /* special_function */
567 "R_ARM_ALU_PCREL_23_15",/* name */
568 FALSE, /* partial_inplace */
569 0x00000fff, /* src_mask */
570 0x00000fff, /* dst_mask */
571 TRUE), /* pcrel_offset */
573 HOWTO (R_ARM_LDR_SBREL_11_0, /* type */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE, /* pc_relative */
579 complain_overflow_dont,/* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_ARM_LDR_SBREL_11_0",/* name */
582 FALSE, /* partial_inplace */
583 0x00000fff, /* src_mask */
584 0x00000fff, /* dst_mask */
585 FALSE), /* pcrel_offset */
587 HOWTO (R_ARM_ALU_SBREL_19_12, /* type */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
591 FALSE, /* pc_relative */
593 complain_overflow_dont,/* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_ARM_ALU_SBREL_19_12",/* name */
596 FALSE, /* partial_inplace */
597 0x000ff000, /* src_mask */
598 0x000ff000, /* dst_mask */
599 FALSE), /* pcrel_offset */
601 HOWTO (R_ARM_ALU_SBREL_27_20, /* type */
603 2, /* size (0 = byte, 1 = short, 2 = long) */
605 FALSE, /* pc_relative */
607 complain_overflow_dont,/* complain_on_overflow */
608 bfd_elf_generic_reloc, /* special_function */
609 "R_ARM_ALU_SBREL_27_20",/* name */
610 FALSE, /* partial_inplace */
611 0x0ff00000, /* src_mask */
612 0x0ff00000, /* dst_mask */
613 FALSE), /* pcrel_offset */
615 HOWTO (R_ARM_TARGET1, /* type */
617 2, /* size (0 = byte, 1 = short, 2 = long) */
619 FALSE, /* pc_relative */
621 complain_overflow_dont,/* complain_on_overflow */
622 bfd_elf_generic_reloc, /* special_function */
623 "R_ARM_TARGET1", /* name */
624 FALSE, /* partial_inplace */
625 0xffffffff, /* src_mask */
626 0xffffffff, /* dst_mask */
627 FALSE), /* pcrel_offset */
629 HOWTO (R_ARM_ROSEGREL32, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 FALSE, /* pc_relative */
635 complain_overflow_dont,/* complain_on_overflow */
636 bfd_elf_generic_reloc, /* special_function */
637 "R_ARM_ROSEGREL32", /* name */
638 FALSE, /* partial_inplace */
639 0xffffffff, /* src_mask */
640 0xffffffff, /* dst_mask */
641 FALSE), /* pcrel_offset */
643 HOWTO (R_ARM_V4BX, /* type */
645 2, /* size (0 = byte, 1 = short, 2 = long) */
647 FALSE, /* pc_relative */
649 complain_overflow_dont,/* complain_on_overflow */
650 bfd_elf_generic_reloc, /* special_function */
651 "R_ARM_V4BX", /* name */
652 FALSE, /* partial_inplace */
653 0xffffffff, /* src_mask */
654 0xffffffff, /* dst_mask */
655 FALSE), /* pcrel_offset */
657 HOWTO (R_ARM_TARGET2, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 FALSE, /* pc_relative */
663 complain_overflow_signed,/* complain_on_overflow */
664 bfd_elf_generic_reloc, /* special_function */
665 "R_ARM_TARGET2", /* name */
666 FALSE, /* partial_inplace */
667 0xffffffff, /* src_mask */
668 0xffffffff, /* dst_mask */
669 TRUE), /* pcrel_offset */
671 HOWTO (R_ARM_PREL31, /* type */
673 2, /* size (0 = byte, 1 = short, 2 = long) */
675 TRUE, /* pc_relative */
677 complain_overflow_signed,/* complain_on_overflow */
678 bfd_elf_generic_reloc, /* special_function */
679 "R_ARM_PREL31", /* name */
680 FALSE, /* partial_inplace */
681 0x7fffffff, /* src_mask */
682 0x7fffffff, /* dst_mask */
683 TRUE), /* pcrel_offset */
685 HOWTO (R_ARM_MOVW_ABS_NC, /* type */
687 2, /* size (0 = byte, 1 = short, 2 = long) */
689 FALSE, /* pc_relative */
691 complain_overflow_dont,/* complain_on_overflow */
692 bfd_elf_generic_reloc, /* special_function */
693 "R_ARM_MOVW_ABS_NC", /* name */
694 FALSE, /* partial_inplace */
695 0x000f0fff, /* src_mask */
696 0x000f0fff, /* dst_mask */
697 FALSE), /* pcrel_offset */
699 HOWTO (R_ARM_MOVT_ABS, /* type */
701 2, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE, /* pc_relative */
705 complain_overflow_bitfield,/* complain_on_overflow */
706 bfd_elf_generic_reloc, /* special_function */
707 "R_ARM_MOVT_ABS", /* name */
708 FALSE, /* partial_inplace */
709 0x000f0fff, /* src_mask */
710 0x000f0fff, /* dst_mask */
711 FALSE), /* pcrel_offset */
713 HOWTO (R_ARM_MOVW_PREL_NC, /* type */
715 2, /* size (0 = byte, 1 = short, 2 = long) */
717 TRUE, /* pc_relative */
719 complain_overflow_dont,/* complain_on_overflow */
720 bfd_elf_generic_reloc, /* special_function */
721 "R_ARM_MOVW_PREL_NC", /* name */
722 FALSE, /* partial_inplace */
723 0x000f0fff, /* src_mask */
724 0x000f0fff, /* dst_mask */
725 TRUE), /* pcrel_offset */
727 HOWTO (R_ARM_MOVT_PREL, /* type */
729 2, /* size (0 = byte, 1 = short, 2 = long) */
731 TRUE, /* pc_relative */
733 complain_overflow_bitfield,/* complain_on_overflow */
734 bfd_elf_generic_reloc, /* special_function */
735 "R_ARM_MOVT_PREL", /* name */
736 FALSE, /* partial_inplace */
737 0x000f0fff, /* src_mask */
738 0x000f0fff, /* dst_mask */
739 TRUE), /* pcrel_offset */
741 HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */
743 2, /* size (0 = byte, 1 = short, 2 = long) */
745 FALSE, /* pc_relative */
747 complain_overflow_dont,/* complain_on_overflow */
748 bfd_elf_generic_reloc, /* special_function */
749 "R_ARM_THM_MOVW_ABS_NC",/* name */
750 FALSE, /* partial_inplace */
751 0x040f70ff, /* src_mask */
752 0x040f70ff, /* dst_mask */
753 FALSE), /* pcrel_offset */
755 HOWTO (R_ARM_THM_MOVT_ABS, /* type */
757 2, /* size (0 = byte, 1 = short, 2 = long) */
759 FALSE, /* pc_relative */
761 complain_overflow_bitfield,/* complain_on_overflow */
762 bfd_elf_generic_reloc, /* special_function */
763 "R_ARM_THM_MOVT_ABS", /* name */
764 FALSE, /* partial_inplace */
765 0x040f70ff, /* src_mask */
766 0x040f70ff, /* dst_mask */
767 FALSE), /* pcrel_offset */
769 HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */
771 2, /* size (0 = byte, 1 = short, 2 = long) */
773 TRUE, /* pc_relative */
775 complain_overflow_dont,/* complain_on_overflow */
776 bfd_elf_generic_reloc, /* special_function */
777 "R_ARM_THM_MOVW_PREL_NC",/* name */
778 FALSE, /* partial_inplace */
779 0x040f70ff, /* src_mask */
780 0x040f70ff, /* dst_mask */
781 TRUE), /* pcrel_offset */
783 HOWTO (R_ARM_THM_MOVT_PREL, /* type */
785 2, /* size (0 = byte, 1 = short, 2 = long) */
787 TRUE, /* pc_relative */
789 complain_overflow_bitfield,/* complain_on_overflow */
790 bfd_elf_generic_reloc, /* special_function */
791 "R_ARM_THM_MOVT_PREL", /* name */
792 FALSE, /* partial_inplace */
793 0x040f70ff, /* src_mask */
794 0x040f70ff, /* dst_mask */
795 TRUE), /* pcrel_offset */
797 HOWTO (R_ARM_THM_JUMP19, /* type */
799 2, /* size (0 = byte, 1 = short, 2 = long) */
801 TRUE, /* pc_relative */
803 complain_overflow_signed,/* complain_on_overflow */
804 bfd_elf_generic_reloc, /* special_function */
805 "R_ARM_THM_JUMP19", /* name */
806 FALSE, /* partial_inplace */
807 0x043f2fff, /* src_mask */
808 0x043f2fff, /* dst_mask */
809 TRUE), /* pcrel_offset */
811 HOWTO (R_ARM_THM_JUMP6, /* type */
813 1, /* size (0 = byte, 1 = short, 2 = long) */
815 TRUE, /* pc_relative */
817 complain_overflow_unsigned,/* complain_on_overflow */
818 bfd_elf_generic_reloc, /* special_function */
819 "R_ARM_THM_JUMP6", /* name */
820 FALSE, /* partial_inplace */
821 0x02f8, /* src_mask */
822 0x02f8, /* dst_mask */
823 TRUE), /* pcrel_offset */
825 /* These are declared as 13-bit signed relocations because we can
826 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
828 HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */
830 2, /* size (0 = byte, 1 = short, 2 = long) */
832 TRUE, /* pc_relative */
834 complain_overflow_dont,/* complain_on_overflow */
835 bfd_elf_generic_reloc, /* special_function */
836 "R_ARM_THM_ALU_PREL_11_0",/* name */
837 FALSE, /* partial_inplace */
838 0xffffffff, /* src_mask */
839 0xffffffff, /* dst_mask */
840 TRUE), /* pcrel_offset */
842 HOWTO (R_ARM_THM_PC12, /* type */
844 2, /* size (0 = byte, 1 = short, 2 = long) */
846 TRUE, /* pc_relative */
848 complain_overflow_dont,/* complain_on_overflow */
849 bfd_elf_generic_reloc, /* special_function */
850 "R_ARM_THM_PC12", /* name */
851 FALSE, /* partial_inplace */
852 0xffffffff, /* src_mask */
853 0xffffffff, /* dst_mask */
854 TRUE), /* pcrel_offset */
856 HOWTO (R_ARM_ABS32_NOI, /* type */
858 2, /* size (0 = byte, 1 = short, 2 = long) */
860 FALSE, /* pc_relative */
862 complain_overflow_dont,/* complain_on_overflow */
863 bfd_elf_generic_reloc, /* special_function */
864 "R_ARM_ABS32_NOI", /* name */
865 FALSE, /* partial_inplace */
866 0xffffffff, /* src_mask */
867 0xffffffff, /* dst_mask */
868 FALSE), /* pcrel_offset */
870 HOWTO (R_ARM_REL32_NOI, /* type */
872 2, /* size (0 = byte, 1 = short, 2 = long) */
874 TRUE, /* pc_relative */
876 complain_overflow_dont,/* complain_on_overflow */
877 bfd_elf_generic_reloc, /* special_function */
878 "R_ARM_REL32_NOI", /* name */
879 FALSE, /* partial_inplace */
880 0xffffffff, /* src_mask */
881 0xffffffff, /* dst_mask */
882 FALSE), /* pcrel_offset */
884 /* Group relocations. */
886 HOWTO (R_ARM_ALU_PC_G0_NC, /* type */
888 2, /* size (0 = byte, 1 = short, 2 = long) */
890 TRUE, /* pc_relative */
892 complain_overflow_dont,/* complain_on_overflow */
893 bfd_elf_generic_reloc, /* special_function */
894 "R_ARM_ALU_PC_G0_NC", /* name */
895 FALSE, /* partial_inplace */
896 0xffffffff, /* src_mask */
897 0xffffffff, /* dst_mask */
898 TRUE), /* pcrel_offset */
900 HOWTO (R_ARM_ALU_PC_G0, /* type */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
904 TRUE, /* pc_relative */
906 complain_overflow_dont,/* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_ARM_ALU_PC_G0", /* name */
909 FALSE, /* partial_inplace */
910 0xffffffff, /* src_mask */
911 0xffffffff, /* dst_mask */
912 TRUE), /* pcrel_offset */
914 HOWTO (R_ARM_ALU_PC_G1_NC, /* type */
916 2, /* size (0 = byte, 1 = short, 2 = long) */
918 TRUE, /* pc_relative */
920 complain_overflow_dont,/* complain_on_overflow */
921 bfd_elf_generic_reloc, /* special_function */
922 "R_ARM_ALU_PC_G1_NC", /* name */
923 FALSE, /* partial_inplace */
924 0xffffffff, /* src_mask */
925 0xffffffff, /* dst_mask */
926 TRUE), /* pcrel_offset */
928 HOWTO (R_ARM_ALU_PC_G1, /* type */
930 2, /* size (0 = byte, 1 = short, 2 = long) */
932 TRUE, /* pc_relative */
934 complain_overflow_dont,/* complain_on_overflow */
935 bfd_elf_generic_reloc, /* special_function */
936 "R_ARM_ALU_PC_G1", /* name */
937 FALSE, /* partial_inplace */
938 0xffffffff, /* src_mask */
939 0xffffffff, /* dst_mask */
940 TRUE), /* pcrel_offset */
942 HOWTO (R_ARM_ALU_PC_G2, /* type */
944 2, /* size (0 = byte, 1 = short, 2 = long) */
946 TRUE, /* pc_relative */
948 complain_overflow_dont,/* complain_on_overflow */
949 bfd_elf_generic_reloc, /* special_function */
950 "R_ARM_ALU_PC_G2", /* name */
951 FALSE, /* partial_inplace */
952 0xffffffff, /* src_mask */
953 0xffffffff, /* dst_mask */
954 TRUE), /* pcrel_offset */
956 HOWTO (R_ARM_LDR_PC_G1, /* type */
958 2, /* size (0 = byte, 1 = short, 2 = long) */
960 TRUE, /* pc_relative */
962 complain_overflow_dont,/* complain_on_overflow */
963 bfd_elf_generic_reloc, /* special_function */
964 "R_ARM_LDR_PC_G1", /* name */
965 FALSE, /* partial_inplace */
966 0xffffffff, /* src_mask */
967 0xffffffff, /* dst_mask */
968 TRUE), /* pcrel_offset */
970 HOWTO (R_ARM_LDR_PC_G2, /* type */
972 2, /* size (0 = byte, 1 = short, 2 = long) */
974 TRUE, /* pc_relative */
976 complain_overflow_dont,/* complain_on_overflow */
977 bfd_elf_generic_reloc, /* special_function */
978 "R_ARM_LDR_PC_G2", /* name */
979 FALSE, /* partial_inplace */
980 0xffffffff, /* src_mask */
981 0xffffffff, /* dst_mask */
982 TRUE), /* pcrel_offset */
984 HOWTO (R_ARM_LDRS_PC_G0, /* type */
986 2, /* size (0 = byte, 1 = short, 2 = long) */
988 TRUE, /* pc_relative */
990 complain_overflow_dont,/* complain_on_overflow */
991 bfd_elf_generic_reloc, /* special_function */
992 "R_ARM_LDRS_PC_G0", /* name */
993 FALSE, /* partial_inplace */
994 0xffffffff, /* src_mask */
995 0xffffffff, /* dst_mask */
996 TRUE), /* pcrel_offset */
998 HOWTO (R_ARM_LDRS_PC_G1, /* type */
1000 2, /* size (0 = byte, 1 = short, 2 = long) */
1002 TRUE, /* pc_relative */
1004 complain_overflow_dont,/* complain_on_overflow */
1005 bfd_elf_generic_reloc, /* special_function */
1006 "R_ARM_LDRS_PC_G1", /* name */
1007 FALSE, /* partial_inplace */
1008 0xffffffff, /* src_mask */
1009 0xffffffff, /* dst_mask */
1010 TRUE), /* pcrel_offset */
1012 HOWTO (R_ARM_LDRS_PC_G2, /* type */
1014 2, /* size (0 = byte, 1 = short, 2 = long) */
1016 TRUE, /* pc_relative */
1018 complain_overflow_dont,/* complain_on_overflow */
1019 bfd_elf_generic_reloc, /* special_function */
1020 "R_ARM_LDRS_PC_G2", /* name */
1021 FALSE, /* partial_inplace */
1022 0xffffffff, /* src_mask */
1023 0xffffffff, /* dst_mask */
1024 TRUE), /* pcrel_offset */
1026 HOWTO (R_ARM_LDC_PC_G0, /* type */
1028 2, /* size (0 = byte, 1 = short, 2 = long) */
1030 TRUE, /* pc_relative */
1032 complain_overflow_dont,/* complain_on_overflow */
1033 bfd_elf_generic_reloc, /* special_function */
1034 "R_ARM_LDC_PC_G0", /* name */
1035 FALSE, /* partial_inplace */
1036 0xffffffff, /* src_mask */
1037 0xffffffff, /* dst_mask */
1038 TRUE), /* pcrel_offset */
1040 HOWTO (R_ARM_LDC_PC_G1, /* type */
1042 2, /* size (0 = byte, 1 = short, 2 = long) */
1044 TRUE, /* pc_relative */
1046 complain_overflow_dont,/* complain_on_overflow */
1047 bfd_elf_generic_reloc, /* special_function */
1048 "R_ARM_LDC_PC_G1", /* name */
1049 FALSE, /* partial_inplace */
1050 0xffffffff, /* src_mask */
1051 0xffffffff, /* dst_mask */
1052 TRUE), /* pcrel_offset */
1054 HOWTO (R_ARM_LDC_PC_G2, /* type */
1056 2, /* size (0 = byte, 1 = short, 2 = long) */
1058 TRUE, /* pc_relative */
1060 complain_overflow_dont,/* complain_on_overflow */
1061 bfd_elf_generic_reloc, /* special_function */
1062 "R_ARM_LDC_PC_G2", /* name */
1063 FALSE, /* partial_inplace */
1064 0xffffffff, /* src_mask */
1065 0xffffffff, /* dst_mask */
1066 TRUE), /* pcrel_offset */
1068 HOWTO (R_ARM_ALU_SB_G0_NC, /* type */
1070 2, /* size (0 = byte, 1 = short, 2 = long) */
1072 TRUE, /* pc_relative */
1074 complain_overflow_dont,/* complain_on_overflow */
1075 bfd_elf_generic_reloc, /* special_function */
1076 "R_ARM_ALU_SB_G0_NC", /* name */
1077 FALSE, /* partial_inplace */
1078 0xffffffff, /* src_mask */
1079 0xffffffff, /* dst_mask */
1080 TRUE), /* pcrel_offset */
1082 HOWTO (R_ARM_ALU_SB_G0, /* type */
1084 2, /* size (0 = byte, 1 = short, 2 = long) */
1086 TRUE, /* pc_relative */
1088 complain_overflow_dont,/* complain_on_overflow */
1089 bfd_elf_generic_reloc, /* special_function */
1090 "R_ARM_ALU_SB_G0", /* name */
1091 FALSE, /* partial_inplace */
1092 0xffffffff, /* src_mask */
1093 0xffffffff, /* dst_mask */
1094 TRUE), /* pcrel_offset */
1096 HOWTO (R_ARM_ALU_SB_G1_NC, /* type */
1098 2, /* size (0 = byte, 1 = short, 2 = long) */
1100 TRUE, /* pc_relative */
1102 complain_overflow_dont,/* complain_on_overflow */
1103 bfd_elf_generic_reloc, /* special_function */
1104 "R_ARM_ALU_SB_G1_NC", /* name */
1105 FALSE, /* partial_inplace */
1106 0xffffffff, /* src_mask */
1107 0xffffffff, /* dst_mask */
1108 TRUE), /* pcrel_offset */
1110 HOWTO (R_ARM_ALU_SB_G1, /* type */
1112 2, /* size (0 = byte, 1 = short, 2 = long) */
1114 TRUE, /* pc_relative */
1116 complain_overflow_dont,/* complain_on_overflow */
1117 bfd_elf_generic_reloc, /* special_function */
1118 "R_ARM_ALU_SB_G1", /* name */
1119 FALSE, /* partial_inplace */
1120 0xffffffff, /* src_mask */
1121 0xffffffff, /* dst_mask */
1122 TRUE), /* pcrel_offset */
1124 HOWTO (R_ARM_ALU_SB_G2, /* type */
1126 2, /* size (0 = byte, 1 = short, 2 = long) */
1128 TRUE, /* pc_relative */
1130 complain_overflow_dont,/* complain_on_overflow */
1131 bfd_elf_generic_reloc, /* special_function */
1132 "R_ARM_ALU_SB_G2", /* name */
1133 FALSE, /* partial_inplace */
1134 0xffffffff, /* src_mask */
1135 0xffffffff, /* dst_mask */
1136 TRUE), /* pcrel_offset */
1138 HOWTO (R_ARM_LDR_SB_G0, /* type */
1140 2, /* size (0 = byte, 1 = short, 2 = long) */
1142 TRUE, /* pc_relative */
1144 complain_overflow_dont,/* complain_on_overflow */
1145 bfd_elf_generic_reloc, /* special_function */
1146 "R_ARM_LDR_SB_G0", /* name */
1147 FALSE, /* partial_inplace */
1148 0xffffffff, /* src_mask */
1149 0xffffffff, /* dst_mask */
1150 TRUE), /* pcrel_offset */
1152 HOWTO (R_ARM_LDR_SB_G1, /* type */
1154 2, /* size (0 = byte, 1 = short, 2 = long) */
1156 TRUE, /* pc_relative */
1158 complain_overflow_dont,/* complain_on_overflow */
1159 bfd_elf_generic_reloc, /* special_function */
1160 "R_ARM_LDR_SB_G1", /* name */
1161 FALSE, /* partial_inplace */
1162 0xffffffff, /* src_mask */
1163 0xffffffff, /* dst_mask */
1164 TRUE), /* pcrel_offset */
1166 HOWTO (R_ARM_LDR_SB_G2, /* type */
1168 2, /* size (0 = byte, 1 = short, 2 = long) */
1170 TRUE, /* pc_relative */
1172 complain_overflow_dont,/* complain_on_overflow */
1173 bfd_elf_generic_reloc, /* special_function */
1174 "R_ARM_LDR_SB_G2", /* name */
1175 FALSE, /* partial_inplace */
1176 0xffffffff, /* src_mask */
1177 0xffffffff, /* dst_mask */
1178 TRUE), /* pcrel_offset */
1180 HOWTO (R_ARM_LDRS_SB_G0, /* type */
1182 2, /* size (0 = byte, 1 = short, 2 = long) */
1184 TRUE, /* pc_relative */
1186 complain_overflow_dont,/* complain_on_overflow */
1187 bfd_elf_generic_reloc, /* special_function */
1188 "R_ARM_LDRS_SB_G0", /* name */
1189 FALSE, /* partial_inplace */
1190 0xffffffff, /* src_mask */
1191 0xffffffff, /* dst_mask */
1192 TRUE), /* pcrel_offset */
1194 HOWTO (R_ARM_LDRS_SB_G1, /* type */
1196 2, /* size (0 = byte, 1 = short, 2 = long) */
1198 TRUE, /* pc_relative */
1200 complain_overflow_dont,/* complain_on_overflow */
1201 bfd_elf_generic_reloc, /* special_function */
1202 "R_ARM_LDRS_SB_G1", /* name */
1203 FALSE, /* partial_inplace */
1204 0xffffffff, /* src_mask */
1205 0xffffffff, /* dst_mask */
1206 TRUE), /* pcrel_offset */
1208 HOWTO (R_ARM_LDRS_SB_G2, /* type */
1210 2, /* size (0 = byte, 1 = short, 2 = long) */
1212 TRUE, /* pc_relative */
1214 complain_overflow_dont,/* complain_on_overflow */
1215 bfd_elf_generic_reloc, /* special_function */
1216 "R_ARM_LDRS_SB_G2", /* name */
1217 FALSE, /* partial_inplace */
1218 0xffffffff, /* src_mask */
1219 0xffffffff, /* dst_mask */
1220 TRUE), /* pcrel_offset */
1222 HOWTO (R_ARM_LDC_SB_G0, /* type */
1224 2, /* size (0 = byte, 1 = short, 2 = long) */
1226 TRUE, /* pc_relative */
1228 complain_overflow_dont,/* complain_on_overflow */
1229 bfd_elf_generic_reloc, /* special_function */
1230 "R_ARM_LDC_SB_G0", /* name */
1231 FALSE, /* partial_inplace */
1232 0xffffffff, /* src_mask */
1233 0xffffffff, /* dst_mask */
1234 TRUE), /* pcrel_offset */
1236 HOWTO (R_ARM_LDC_SB_G1, /* type */
1238 2, /* size (0 = byte, 1 = short, 2 = long) */
1240 TRUE, /* pc_relative */
1242 complain_overflow_dont,/* complain_on_overflow */
1243 bfd_elf_generic_reloc, /* special_function */
1244 "R_ARM_LDC_SB_G1", /* name */
1245 FALSE, /* partial_inplace */
1246 0xffffffff, /* src_mask */
1247 0xffffffff, /* dst_mask */
1248 TRUE), /* pcrel_offset */
1250 HOWTO (R_ARM_LDC_SB_G2, /* type */
1252 2, /* size (0 = byte, 1 = short, 2 = long) */
1254 TRUE, /* pc_relative */
1256 complain_overflow_dont,/* complain_on_overflow */
1257 bfd_elf_generic_reloc, /* special_function */
1258 "R_ARM_LDC_SB_G2", /* name */
1259 FALSE, /* partial_inplace */
1260 0xffffffff, /* src_mask */
1261 0xffffffff, /* dst_mask */
1262 TRUE), /* pcrel_offset */
1264 /* End of group relocations. */
1266 HOWTO (R_ARM_MOVW_BREL_NC, /* type */
1268 2, /* size (0 = byte, 1 = short, 2 = long) */
1270 FALSE, /* pc_relative */
1272 complain_overflow_dont,/* complain_on_overflow */
1273 bfd_elf_generic_reloc, /* special_function */
1274 "R_ARM_MOVW_BREL_NC", /* name */
1275 FALSE, /* partial_inplace */
1276 0x0000ffff, /* src_mask */
1277 0x0000ffff, /* dst_mask */
1278 FALSE), /* pcrel_offset */
1280 HOWTO (R_ARM_MOVT_BREL, /* type */
1282 2, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE, /* pc_relative */
1286 complain_overflow_bitfield,/* complain_on_overflow */
1287 bfd_elf_generic_reloc, /* special_function */
1288 "R_ARM_MOVT_BREL", /* name */
1289 FALSE, /* partial_inplace */
1290 0x0000ffff, /* src_mask */
1291 0x0000ffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1294 HOWTO (R_ARM_MOVW_BREL, /* type */
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1298 FALSE, /* pc_relative */
1300 complain_overflow_dont,/* complain_on_overflow */
1301 bfd_elf_generic_reloc, /* special_function */
1302 "R_ARM_MOVW_BREL", /* name */
1303 FALSE, /* partial_inplace */
1304 0x0000ffff, /* src_mask */
1305 0x0000ffff, /* dst_mask */
1306 FALSE), /* pcrel_offset */
1308 HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1312 FALSE, /* pc_relative */
1314 complain_overflow_dont,/* complain_on_overflow */
1315 bfd_elf_generic_reloc, /* special_function */
1316 "R_ARM_THM_MOVW_BREL_NC",/* name */
1317 FALSE, /* partial_inplace */
1318 0x040f70ff, /* src_mask */
1319 0x040f70ff, /* dst_mask */
1320 FALSE), /* pcrel_offset */
1322 HOWTO (R_ARM_THM_MOVT_BREL, /* type */
1324 2, /* size (0 = byte, 1 = short, 2 = long) */
1326 FALSE, /* pc_relative */
1328 complain_overflow_bitfield,/* complain_on_overflow */
1329 bfd_elf_generic_reloc, /* special_function */
1330 "R_ARM_THM_MOVT_BREL", /* name */
1331 FALSE, /* partial_inplace */
1332 0x040f70ff, /* src_mask */
1333 0x040f70ff, /* dst_mask */
1334 FALSE), /* pcrel_offset */
1336 HOWTO (R_ARM_THM_MOVW_BREL, /* type */
1338 2, /* size (0 = byte, 1 = short, 2 = long) */
1340 FALSE, /* pc_relative */
1342 complain_overflow_dont,/* complain_on_overflow */
1343 bfd_elf_generic_reloc, /* special_function */
1344 "R_ARM_THM_MOVW_BREL", /* name */
1345 FALSE, /* partial_inplace */
1346 0x040f70ff, /* src_mask */
1347 0x040f70ff, /* dst_mask */
1348 FALSE), /* pcrel_offset */
1350 EMPTY_HOWTO (90), /* unallocated */
1355 HOWTO (R_ARM_PLT32_ABS, /* type */
1357 2, /* size (0 = byte, 1 = short, 2 = long) */
1359 FALSE, /* pc_relative */
1361 complain_overflow_dont,/* complain_on_overflow */
1362 bfd_elf_generic_reloc, /* special_function */
1363 "R_ARM_PLT32_ABS", /* name */
1364 FALSE, /* partial_inplace */
1365 0xffffffff, /* src_mask */
1366 0xffffffff, /* dst_mask */
1367 FALSE), /* pcrel_offset */
1369 HOWTO (R_ARM_GOT_ABS, /* type */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE, /* pc_relative */
1375 complain_overflow_dont,/* complain_on_overflow */
1376 bfd_elf_generic_reloc, /* special_function */
1377 "R_ARM_GOT_ABS", /* name */
1378 FALSE, /* partial_inplace */
1379 0xffffffff, /* src_mask */
1380 0xffffffff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
1383 HOWTO (R_ARM_GOT_PREL, /* type */
1385 2, /* size (0 = byte, 1 = short, 2 = long) */
1387 TRUE, /* pc_relative */
1389 complain_overflow_dont, /* complain_on_overflow */
1390 bfd_elf_generic_reloc, /* special_function */
1391 "R_ARM_GOT_PREL", /* name */
1392 FALSE, /* partial_inplace */
1393 0xffffffff, /* src_mask */
1394 0xffffffff, /* dst_mask */
1395 TRUE), /* pcrel_offset */
1397 HOWTO (R_ARM_GOT_BREL12, /* type */
1399 2, /* size (0 = byte, 1 = short, 2 = long) */
1401 FALSE, /* pc_relative */
1403 complain_overflow_bitfield,/* complain_on_overflow */
1404 bfd_elf_generic_reloc, /* special_function */
1405 "R_ARM_GOT_BREL12", /* name */
1406 FALSE, /* partial_inplace */
1407 0x00000fff, /* src_mask */
1408 0x00000fff, /* dst_mask */
1409 FALSE), /* pcrel_offset */
1411 HOWTO (R_ARM_GOTOFF12, /* type */
1413 2, /* size (0 = byte, 1 = short, 2 = long) */
1415 FALSE, /* pc_relative */
1417 complain_overflow_bitfield,/* complain_on_overflow */
1418 bfd_elf_generic_reloc, /* special_function */
1419 "R_ARM_GOTOFF12", /* name */
1420 FALSE, /* partial_inplace */
1421 0x00000fff, /* src_mask */
1422 0x00000fff, /* dst_mask */
1423 FALSE), /* pcrel_offset */
1425 EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */
1427 /* GNU extension to record C++ vtable member usage */
1428 HOWTO (R_ARM_GNU_VTENTRY, /* type */
1430 2, /* size (0 = byte, 1 = short, 2 = long) */
1432 FALSE, /* pc_relative */
1434 complain_overflow_dont, /* complain_on_overflow */
1435 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1436 "R_ARM_GNU_VTENTRY", /* name */
1437 FALSE, /* partial_inplace */
1440 FALSE), /* pcrel_offset */
1442 /* GNU extension to record C++ vtable hierarchy */
1443 HOWTO (R_ARM_GNU_VTINHERIT, /* type */
1445 2, /* size (0 = byte, 1 = short, 2 = long) */
1447 FALSE, /* pc_relative */
1449 complain_overflow_dont, /* complain_on_overflow */
1450 NULL, /* special_function */
1451 "R_ARM_GNU_VTINHERIT", /* name */
1452 FALSE, /* partial_inplace */
1455 FALSE), /* pcrel_offset */
1457 HOWTO (R_ARM_THM_JUMP11, /* type */
1459 1, /* size (0 = byte, 1 = short, 2 = long) */
1461 TRUE, /* pc_relative */
1463 complain_overflow_signed, /* complain_on_overflow */
1464 bfd_elf_generic_reloc, /* special_function */
1465 "R_ARM_THM_JUMP11", /* name */
1466 FALSE, /* partial_inplace */
1467 0x000007ff, /* src_mask */
1468 0x000007ff, /* dst_mask */
1469 TRUE), /* pcrel_offset */
1471 HOWTO (R_ARM_THM_JUMP8, /* type */
1473 1, /* size (0 = byte, 1 = short, 2 = long) */
1475 TRUE, /* pc_relative */
1477 complain_overflow_signed, /* complain_on_overflow */
1478 bfd_elf_generic_reloc, /* special_function */
1479 "R_ARM_THM_JUMP8", /* name */
1480 FALSE, /* partial_inplace */
1481 0x000000ff, /* src_mask */
1482 0x000000ff, /* dst_mask */
1483 TRUE), /* pcrel_offset */
1485 /* TLS relocations */
1486 HOWTO (R_ARM_TLS_GD32, /* type */
1488 2, /* size (0 = byte, 1 = short, 2 = long) */
1490 FALSE, /* pc_relative */
1492 complain_overflow_bitfield,/* complain_on_overflow */
1493 NULL, /* special_function */
1494 "R_ARM_TLS_GD32", /* name */
1495 TRUE, /* partial_inplace */
1496 0xffffffff, /* src_mask */
1497 0xffffffff, /* dst_mask */
1498 FALSE), /* pcrel_offset */
1500 HOWTO (R_ARM_TLS_LDM32, /* type */
1502 2, /* size (0 = byte, 1 = short, 2 = long) */
1504 FALSE, /* pc_relative */
1506 complain_overflow_bitfield,/* complain_on_overflow */
1507 bfd_elf_generic_reloc, /* special_function */
1508 "R_ARM_TLS_LDM32", /* name */
1509 TRUE, /* partial_inplace */
1510 0xffffffff, /* src_mask */
1511 0xffffffff, /* dst_mask */
1512 FALSE), /* pcrel_offset */
1514 HOWTO (R_ARM_TLS_LDO32, /* type */
1516 2, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE, /* pc_relative */
1520 complain_overflow_bitfield,/* complain_on_overflow */
1521 bfd_elf_generic_reloc, /* special_function */
1522 "R_ARM_TLS_LDO32", /* name */
1523 TRUE, /* partial_inplace */
1524 0xffffffff, /* src_mask */
1525 0xffffffff, /* dst_mask */
1526 FALSE), /* pcrel_offset */
1528 HOWTO (R_ARM_TLS_IE32, /* type */
1530 2, /* size (0 = byte, 1 = short, 2 = long) */
1532 FALSE, /* pc_relative */
1534 complain_overflow_bitfield,/* complain_on_overflow */
1535 NULL, /* special_function */
1536 "R_ARM_TLS_IE32", /* name */
1537 TRUE, /* partial_inplace */
1538 0xffffffff, /* src_mask */
1539 0xffffffff, /* dst_mask */
1540 FALSE), /* pcrel_offset */
1542 HOWTO (R_ARM_TLS_LE32, /* type */
1544 2, /* size (0 = byte, 1 = short, 2 = long) */
1546 FALSE, /* pc_relative */
1548 complain_overflow_bitfield,/* complain_on_overflow */
1549 bfd_elf_generic_reloc, /* special_function */
1550 "R_ARM_TLS_LE32", /* name */
1551 TRUE, /* partial_inplace */
1552 0xffffffff, /* src_mask */
1553 0xffffffff, /* dst_mask */
1554 FALSE), /* pcrel_offset */
1556 HOWTO (R_ARM_TLS_LDO12, /* type */
1558 2, /* size (0 = byte, 1 = short, 2 = long) */
1560 FALSE, /* pc_relative */
1562 complain_overflow_bitfield,/* complain_on_overflow */
1563 bfd_elf_generic_reloc, /* special_function */
1564 "R_ARM_TLS_LDO12", /* name */
1565 FALSE, /* partial_inplace */
1566 0x00000fff, /* src_mask */
1567 0x00000fff, /* dst_mask */
1568 FALSE), /* pcrel_offset */
1570 HOWTO (R_ARM_TLS_LE12, /* type */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1574 FALSE, /* pc_relative */
1576 complain_overflow_bitfield,/* complain_on_overflow */
1577 bfd_elf_generic_reloc, /* special_function */
1578 "R_ARM_TLS_LE12", /* name */
1579 FALSE, /* partial_inplace */
1580 0x00000fff, /* src_mask */
1581 0x00000fff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
1584 HOWTO (R_ARM_TLS_IE12GP, /* type */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 FALSE, /* pc_relative */
1590 complain_overflow_bitfield,/* complain_on_overflow */
1591 bfd_elf_generic_reloc, /* special_function */
1592 "R_ARM_TLS_IE12GP", /* name */
1593 FALSE, /* partial_inplace */
1594 0x00000fff, /* src_mask */
1595 0x00000fff, /* dst_mask */
1596 FALSE), /* pcrel_offset */
1599 /* 112-127 private relocations
1600 128 R_ARM_ME_TOO, obsolete
1601 129-255 unallocated in AAELF.
1603 249-255 extended, currently unused, relocations: */
1605 static reloc_howto_type elf32_arm_howto_table_2[4] =
1607 HOWTO (R_ARM_RREL32, /* type */
1609 0, /* size (0 = byte, 1 = short, 2 = long) */
1611 FALSE, /* pc_relative */
1613 complain_overflow_dont,/* complain_on_overflow */
1614 bfd_elf_generic_reloc, /* special_function */
1615 "R_ARM_RREL32", /* name */
1616 FALSE, /* partial_inplace */
1619 FALSE), /* pcrel_offset */
1621 HOWTO (R_ARM_RABS32, /* type */
1623 0, /* size (0 = byte, 1 = short, 2 = long) */
1625 FALSE, /* pc_relative */
1627 complain_overflow_dont,/* complain_on_overflow */
1628 bfd_elf_generic_reloc, /* special_function */
1629 "R_ARM_RABS32", /* name */
1630 FALSE, /* partial_inplace */
1633 FALSE), /* pcrel_offset */
1635 HOWTO (R_ARM_RPC24, /* type */
1637 0, /* size (0 = byte, 1 = short, 2 = long) */
1639 FALSE, /* pc_relative */
1641 complain_overflow_dont,/* complain_on_overflow */
1642 bfd_elf_generic_reloc, /* special_function */
1643 "R_ARM_RPC24", /* name */
1644 FALSE, /* partial_inplace */
1647 FALSE), /* pcrel_offset */
1649 HOWTO (R_ARM_RBASE, /* type */
1651 0, /* size (0 = byte, 1 = short, 2 = long) */
1653 FALSE, /* pc_relative */
1655 complain_overflow_dont,/* complain_on_overflow */
1656 bfd_elf_generic_reloc, /* special_function */
1657 "R_ARM_RBASE", /* name */
1658 FALSE, /* partial_inplace */
1661 FALSE) /* pcrel_offset */
1664 static reloc_howto_type *
1665 elf32_arm_howto_from_type (unsigned int r_type)
1667 if (r_type < ARRAY_SIZE (elf32_arm_howto_table_1))
1668 return &elf32_arm_howto_table_1[r_type];
1670 if (r_type >= R_ARM_RREL32
1671 && r_type < R_ARM_RREL32 + ARRAY_SIZE (elf32_arm_howto_table_2))
1672 return &elf32_arm_howto_table_2[r_type - R_ARM_RREL32];
1678 elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
1679 Elf_Internal_Rela * elf_reloc)
1681 unsigned int r_type;
1683 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1684 bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
1687 struct elf32_arm_reloc_map
1689 bfd_reloc_code_real_type bfd_reloc_val;
1690 unsigned char elf_reloc_val;
1693 /* All entries in this list must also be present in elf32_arm_howto_table. */
1694 static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
1696 {BFD_RELOC_NONE, R_ARM_NONE},
1697 {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
1698 {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL},
1699 {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24},
1700 {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
1701 {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
1702 {BFD_RELOC_32, R_ARM_ABS32},
1703 {BFD_RELOC_32_PCREL, R_ARM_REL32},
1704 {BFD_RELOC_8, R_ARM_ABS8},
1705 {BFD_RELOC_16, R_ARM_ABS16},
1706 {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
1707 {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
1708 {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24},
1709 {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL},
1710 {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11},
1711 {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19},
1712 {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6},
1714 {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
1715 {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
1716 {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
1717 {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32},
1718 {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
1719 {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
1720 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1721 {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1},
1722 {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32},
1723 {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32},
1724 {BFD_RELOC_ARM_PREL31, R_ARM_PREL31},
1725 {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2},
1726 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1727 {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32},
1728 {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32},
1729 {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32},
1730 {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32},
1731 {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32},
1732 {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32},
1733 {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32},
1734 {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32},
1735 {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT},
1736 {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY},
1737 {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC},
1738 {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS},
1739 {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC},
1740 {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL},
1741 {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC},
1742 {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS},
1743 {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC},
1744 {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL},
1745 {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC},
1746 {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0},
1747 {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC},
1748 {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1},
1749 {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2},
1750 {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0},
1751 {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1},
1752 {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2},
1753 {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0},
1754 {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1},
1755 {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2},
1756 {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0},
1757 {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1},
1758 {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2},
1759 {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC},
1760 {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0},
1761 {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC},
1762 {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1},
1763 {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2},
1764 {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0},
1765 {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1},
1766 {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2},
1767 {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0},
1768 {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1},
1769 {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2},
1770 {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0},
1771 {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1},
1772 {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2},
1773 {BFD_RELOC_ARM_V4BX, R_ARM_V4BX}
1776 static reloc_howto_type *
1777 elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1778 bfd_reloc_code_real_type code)
1781 for (i = 0; i < ARRAY_SIZE (elf32_arm_reloc_map); i ++)
1782 if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
1783 return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
1788 static reloc_howto_type *
1789 elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1794 for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_1); i++)
1795 if (elf32_arm_howto_table_1[i].name != NULL
1796 && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0)
1797 return &elf32_arm_howto_table_1[i];
1799 for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_2); i++)
1800 if (elf32_arm_howto_table_2[i].name != NULL
1801 && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0)
1802 return &elf32_arm_howto_table_2[i];
1807 /* Support for core dump NOTE sections. */
1810 elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1815 switch (note->descsz)
1820 case 148: /* Linux/ARM 32-bit*/
1822 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1825 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1834 /* Make a ".reg/999" section. */
1835 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1836 size, note->descpos + offset);
1840 elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1842 switch (note->descsz)
1847 case 124: /* Linux/ARM elf_prpsinfo */
1848 elf_tdata (abfd)->core_program
1849 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1850 elf_tdata (abfd)->core_command
1851 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1854 /* Note that for some reason, a spurious space is tacked
1855 onto the end of the args in some (at least one anyway)
1856 implementations, so strip it off if it exists. */
1858 char *command = elf_tdata (abfd)->core_command;
1859 int n = strlen (command);
1861 if (0 < n && command[n - 1] == ' ')
1862 command[n - 1] = '\0';
1868 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1869 #define TARGET_LITTLE_NAME "elf32-littlearm"
1870 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1871 #define TARGET_BIG_NAME "elf32-bigarm"
1873 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1874 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1876 typedef unsigned long int insn32;
1877 typedef unsigned short int insn16;
1879 /* In lieu of proper flags, assume all EABIv4 or later objects are
1881 #define INTERWORK_FLAG(abfd) \
1882 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1883 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1885 /* The linker script knows the section names for placement.
1886 The entry_names are used to do simple name mangling on the stubs.
1887 Given a function name, and its type, the stub can be found. The
1888 name can be changed. The only requirement is the %s be present. */
1889 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1890 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1892 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1893 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1895 #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1896 #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1898 #define ARM_BX_GLUE_SECTION_NAME ".v4_bx"
1899 #define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d"
1901 #define STUB_ENTRY_NAME "__%s_veneer"
1903 /* The name of the dynamic interpreter. This is put in the .interp
1905 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1907 #ifdef FOUR_WORD_PLT
1909 /* The first entry in a procedure linkage table looks like
1910 this. It is set up so that any shared library function that is
1911 called before the relocation has been set up calls the dynamic
1913 static const bfd_vma elf32_arm_plt0_entry [] =
1915 0xe52de004, /* str lr, [sp, #-4]! */
1916 0xe59fe010, /* ldr lr, [pc, #16] */
1917 0xe08fe00e, /* add lr, pc, lr */
1918 0xe5bef008, /* ldr pc, [lr, #8]! */
1921 /* Subsequent entries in a procedure linkage table look like
1923 static const bfd_vma elf32_arm_plt_entry [] =
1925 0xe28fc600, /* add ip, pc, #NN */
1926 0xe28cca00, /* add ip, ip, #NN */
1927 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1928 0x00000000, /* unused */
1933 /* The first entry in a procedure linkage table looks like
1934 this. It is set up so that any shared library function that is
1935 called before the relocation has been set up calls the dynamic
1937 static const bfd_vma elf32_arm_plt0_entry [] =
1939 0xe52de004, /* str lr, [sp, #-4]! */
1940 0xe59fe004, /* ldr lr, [pc, #4] */
1941 0xe08fe00e, /* add lr, pc, lr */
1942 0xe5bef008, /* ldr pc, [lr, #8]! */
1943 0x00000000, /* &GOT[0] - . */
1946 /* Subsequent entries in a procedure linkage table look like
1948 static const bfd_vma elf32_arm_plt_entry [] =
1950 0xe28fc600, /* add ip, pc, #0xNN00000 */
1951 0xe28cca00, /* add ip, ip, #0xNN000 */
1952 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1957 /* The format of the first entry in the procedure linkage table
1958 for a VxWorks executable. */
1959 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] =
1961 0xe52dc008, /* str ip,[sp,#-8]! */
1962 0xe59fc000, /* ldr ip,[pc] */
1963 0xe59cf008, /* ldr pc,[ip,#8] */
1964 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1967 /* The format of subsequent entries in a VxWorks executable. */
1968 static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] =
1970 0xe59fc000, /* ldr ip,[pc] */
1971 0xe59cf000, /* ldr pc,[ip] */
1972 0x00000000, /* .long @got */
1973 0xe59fc000, /* ldr ip,[pc] */
1974 0xea000000, /* b _PLT */
1975 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1978 /* The format of entries in a VxWorks shared library. */
1979 static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] =
1981 0xe59fc000, /* ldr ip,[pc] */
1982 0xe79cf009, /* ldr pc,[ip,r9] */
1983 0x00000000, /* .long @got */
1984 0xe59fc000, /* ldr ip,[pc] */
1985 0xe599f008, /* ldr pc,[r9,#8] */
1986 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1989 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1990 #define PLT_THUMB_STUB_SIZE 4
1991 static const bfd_vma elf32_arm_plt_thumb_stub [] =
1997 /* The entries in a PLT when using a DLL-based target with multiple
1999 static const bfd_vma elf32_arm_symbian_plt_entry [] =
2001 0xe51ff004, /* ldr pc, [pc, #-4] */
2002 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2005 #define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8)
2006 #define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8)
2007 #define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4)
2008 #define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4)
2009 #define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4)
2010 #define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4)
2012 static const bfd_vma arm_long_branch_stub[] =
2014 0xe51ff004, /* ldr pc, [pc, #-4] */
2015 0x00000000, /* dcd R_ARM_ABS32(X) */
2018 static const bfd_vma arm_thumb_v4t_long_branch_stub[] =
2020 0xe59fc000, /* ldr ip, [pc, #0] */
2021 0xe12fff1c, /* bx ip */
2022 0x00000000, /* dcd R_ARM_ABS32(X) */
2025 static const bfd_vma arm_thumb_thumb_long_branch_stub[] =
2027 0x4e02b540, /* push {r6, lr} */
2028 /* ldr r6, [pc, #8] */
2029 0x473046fe, /* mov lr, pc */
2031 0xbf00bd40, /* pop {r6, pc} */
2033 0x00000000, /* dcd R_ARM_ABS32(X) */
2036 static const bfd_vma arm_thumb_arm_v4t_long_branch_stub[] =
2038 0x4e03b540, /* push {r6, lr} */
2039 /* ldr r6, [pc, #12] */
2040 0x473046fe, /* mov lr, pc */
2042 0xe8bd4040, /* pop {r6, pc} */
2043 0xe12fff1e, /* bx lr */
2044 0x00000000, /* dcd R_ARM_ABS32(X) */
2047 static const bfd_vma arm_pic_long_branch_stub[] =
2049 0xe59fc000, /* ldr r12, [pc] */
2050 0xe08ff00c, /* add pc, pc, ip */
2051 0x00000000, /* dcd R_ARM_REL32(X) */
2054 /* Section name for stubs is the associated section name plus this
2056 #define STUB_SUFFIX ".stub"
2058 enum elf32_arm_stub_type
2061 arm_stub_long_branch,
2062 arm_thumb_v4t_stub_long_branch,
2063 arm_thumb_thumb_stub_long_branch,
2064 arm_thumb_arm_v4t_stub_long_branch,
2065 arm_stub_pic_long_branch,
2068 struct elf32_arm_stub_hash_entry
2070 /* Base hash table entry structure. */
2071 struct bfd_hash_entry root;
2073 /* The stub section. */
2076 /* Offset within stub_sec of the beginning of this stub. */
2077 bfd_vma stub_offset;
2079 /* Given the symbol's value and its section we can determine its final
2080 value when building the stubs (so the stub knows where to jump). */
2081 bfd_vma target_value;
2082 asection *target_section;
2084 enum elf32_arm_stub_type stub_type;
2086 /* The symbol table entry, if any, that this was derived from. */
2087 struct elf32_arm_link_hash_entry *h;
2089 /* Destination symbol type (STT_ARM_TFUNC, ...) */
2090 unsigned char st_type;
2092 /* Where this stub is being called from, or, in the case of combined
2093 stub sections, the first input section in the group. */
2096 /* The name for the local symbol at the start of this stub. The
2097 stub name in the hash table has to be unique; this does not, so
2098 it can be friendlier. */
2102 /* Used to build a map of a section. This is required for mixed-endian
2105 typedef struct elf32_elf_section_map
2110 elf32_arm_section_map;
2112 /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2116 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER,
2117 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER,
2118 VFP11_ERRATUM_ARM_VENEER,
2119 VFP11_ERRATUM_THUMB_VENEER
2121 elf32_vfp11_erratum_type;
2123 typedef struct elf32_vfp11_erratum_list
2125 struct elf32_vfp11_erratum_list *next;
2131 struct elf32_vfp11_erratum_list *veneer;
2132 unsigned int vfp_insn;
2136 struct elf32_vfp11_erratum_list *branch;
2140 elf32_vfp11_erratum_type type;
2142 elf32_vfp11_erratum_list;
2144 typedef struct _arm_elf_section_data
2146 struct bfd_elf_section_data elf;
2147 unsigned int mapcount;
2148 unsigned int mapsize;
2149 elf32_arm_section_map *map;
2150 unsigned int erratumcount;
2151 elf32_vfp11_erratum_list *erratumlist;
2153 _arm_elf_section_data;
2155 #define elf32_arm_section_data(sec) \
2156 ((_arm_elf_section_data *) elf_section_data (sec))
2158 /* The size of the thread control block. */
2161 struct elf_arm_obj_tdata
2163 struct elf_obj_tdata root;
2165 /* tls_type for each local got entry. */
2166 char *local_got_tls_type;
2168 /* Zero to warn when linking objects with incompatible enum sizes. */
2169 int no_enum_size_warning;
2172 #define elf_arm_tdata(bfd) \
2173 ((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
2175 #define elf32_arm_local_got_tls_type(bfd) \
2176 (elf_arm_tdata (bfd)->local_got_tls_type)
2178 #define is_arm_elf(bfd) \
2179 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2180 && elf_tdata (bfd) != NULL \
2181 && elf_object_id (bfd) == ARM_ELF_TDATA)
2184 elf32_arm_mkobject (bfd *abfd)
2186 return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata),
2190 /* The ARM linker needs to keep track of the number of relocs that it
2191 decides to copy in check_relocs for each symbol. This is so that
2192 it can discard PC relative relocs if it doesn't need them when
2193 linking with -Bsymbolic. We store the information in a field
2194 extending the regular ELF linker hash table. */
2196 /* This structure keeps track of the number of relocs we have copied
2197 for a given symbol. */
2198 struct elf32_arm_relocs_copied
2201 struct elf32_arm_relocs_copied * next;
2202 /* A section in dynobj. */
2204 /* Number of relocs copied in this section. */
2205 bfd_size_type count;
2206 /* Number of PC-relative relocs copied in this section. */
2207 bfd_size_type pc_count;
2210 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2212 /* Arm ELF linker hash entry. */
2213 struct elf32_arm_link_hash_entry
2215 struct elf_link_hash_entry root;
2217 /* Number of PC relative relocs copied for this symbol. */
2218 struct elf32_arm_relocs_copied * relocs_copied;
2220 /* We reference count Thumb references to a PLT entry separately,
2221 so that we can emit the Thumb trampoline only if needed. */
2222 bfd_signed_vma plt_thumb_refcount;
2224 /* Some references from Thumb code may be eliminated by BL->BLX
2225 conversion, so record them separately. */
2226 bfd_signed_vma plt_maybe_thumb_refcount;
2228 /* Since PLT entries have variable size if the Thumb prologue is
2229 used, we need to record the index into .got.plt instead of
2230 recomputing it from the PLT offset. */
2231 bfd_signed_vma plt_got_offset;
2233 #define GOT_UNKNOWN 0
2234 #define GOT_NORMAL 1
2235 #define GOT_TLS_GD 2
2236 #define GOT_TLS_IE 4
2237 unsigned char tls_type;
2239 /* The symbol marking the real symbol location for exported thumb
2240 symbols with Arm stubs. */
2241 struct elf_link_hash_entry *export_glue;
2243 /* A pointer to the most recently used stub hash entry against this
2245 struct elf32_arm_stub_hash_entry *stub_cache;
2248 /* Traverse an arm ELF linker hash table. */
2249 #define elf32_arm_link_hash_traverse(table, func, info) \
2250 (elf_link_hash_traverse \
2252 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2255 /* Get the ARM elf linker hash table from a link_info structure. */
2256 #define elf32_arm_hash_table(info) \
2257 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2259 #define arm_stub_hash_lookup(table, string, create, copy) \
2260 ((struct elf32_arm_stub_hash_entry *) \
2261 bfd_hash_lookup ((table), (string), (create), (copy)))
2263 /* ARM ELF linker hash table. */
2264 struct elf32_arm_link_hash_table
2266 /* The main hash table. */
2267 struct elf_link_hash_table root;
2269 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2270 bfd_size_type thumb_glue_size;
2272 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2273 bfd_size_type arm_glue_size;
2275 /* The size in bytes of section containing the ARMv4 BX veneers. */
2276 bfd_size_type bx_glue_size;
2278 /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when
2279 veneer has been populated. */
2280 bfd_vma bx_glue_offset[15];
2282 /* The size in bytes of the section containing glue for VFP11 erratum
2284 bfd_size_type vfp11_erratum_glue_size;
2286 /* An arbitrary input BFD chosen to hold the glue sections. */
2287 bfd * bfd_of_glue_owner;
2289 /* Nonzero to output a BE8 image. */
2292 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2293 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2296 /* The relocation to use for R_ARM_TARGET2 relocations. */
2299 /* 0 = Ignore R_ARM_V4BX.
2300 1 = Convert BX to MOV PC.
2301 2 = Generate v4 interworing stubs. */
2304 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2307 /* What sort of code sequences we should look for which may trigger the
2308 VFP11 denorm erratum. */
2309 bfd_arm_vfp11_fix vfp11_fix;
2311 /* Global counter for the number of fixes we have emitted. */
2312 int num_vfp11_fixes;
2314 /* Nonzero to force PIC branch veneers. */
2317 /* The number of bytes in the initial entry in the PLT. */
2318 bfd_size_type plt_header_size;
2320 /* The number of bytes in the subsequent PLT etries. */
2321 bfd_size_type plt_entry_size;
2323 /* True if the target system is VxWorks. */
2326 /* True if the target system is Symbian OS. */
2329 /* True if the target uses REL relocations. */
2332 /* Short-cuts to get to dynamic linker sections. */
2341 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2344 /* Data for R_ARM_TLS_LDM32 relocations. */
2347 bfd_signed_vma refcount;
2351 /* Small local sym to section mapping cache. */
2352 struct sym_sec_cache sym_sec;
2354 /* For convenience in allocate_dynrelocs. */
2357 /* The stub hash table. */
2358 struct bfd_hash_table stub_hash_table;
2360 /* Linker stub bfd. */
2363 /* Linker call-backs. */
2364 asection * (*add_stub_section) (const char *, asection *);
2365 void (*layout_sections_again) (void);
2367 /* Array to keep track of which stub sections have been created, and
2368 information on stub grouping. */
2371 /* This is the section to which stubs in the group will be
2374 /* The stub section. */
2378 /* Assorted information used by elf32_arm_size_stubs. */
2379 unsigned int bfd_count;
2381 asection **input_list;
2384 /* Create an entry in an ARM ELF linker hash table. */
2386 static struct bfd_hash_entry *
2387 elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
2388 struct bfd_hash_table * table,
2389 const char * string)
2391 struct elf32_arm_link_hash_entry * ret =
2392 (struct elf32_arm_link_hash_entry *) entry;
2394 /* Allocate the structure if it has not already been allocated by a
2397 ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
2399 return (struct bfd_hash_entry *) ret;
2401 /* Call the allocation method of the superclass. */
2402 ret = ((struct elf32_arm_link_hash_entry *)
2403 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2407 ret->relocs_copied = NULL;
2408 ret->tls_type = GOT_UNKNOWN;
2409 ret->plt_thumb_refcount = 0;
2410 ret->plt_maybe_thumb_refcount = 0;
2411 ret->plt_got_offset = -1;
2412 ret->export_glue = NULL;
2414 ret->stub_cache = NULL;
2417 return (struct bfd_hash_entry *) ret;
2420 /* Initialize an entry in the stub hash table. */
2422 static struct bfd_hash_entry *
2423 stub_hash_newfunc (struct bfd_hash_entry *entry,
2424 struct bfd_hash_table *table,
2427 /* Allocate the structure if it has not already been allocated by a
2431 entry = bfd_hash_allocate (table,
2432 sizeof (struct elf32_arm_stub_hash_entry));
2437 /* Call the allocation method of the superclass. */
2438 entry = bfd_hash_newfunc (entry, table, string);
2441 struct elf32_arm_stub_hash_entry *eh;
2443 /* Initialize the local fields. */
2444 eh = (struct elf32_arm_stub_hash_entry *) entry;
2445 eh->stub_sec = NULL;
2446 eh->stub_offset = 0;
2447 eh->target_value = 0;
2448 eh->target_section = NULL;
2449 eh->stub_type = arm_stub_none;
2457 /* Return true if NAME is the name of the relocation section associated
2461 reloc_section_p (struct elf32_arm_link_hash_table *htab,
2462 const char *name, asection *s)
2465 return CONST_STRNEQ (name, ".rel") && strcmp (s->name, name + 4) == 0;
2467 return CONST_STRNEQ (name, ".rela") && strcmp (s->name, name + 5) == 0;
2470 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2471 shortcuts to them in our hash table. */
2474 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2476 struct elf32_arm_link_hash_table *htab;
2478 htab = elf32_arm_hash_table (info);
2479 /* BPABI objects never have a GOT, or associated sections. */
2480 if (htab->symbian_p)
2483 if (! _bfd_elf_create_got_section (dynobj, info))
2486 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2487 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2488 if (!htab->sgot || !htab->sgotplt)
2491 htab->srelgot = bfd_make_section_with_flags (dynobj,
2492 RELOC_SECTION (htab, ".got"),
2493 (SEC_ALLOC | SEC_LOAD
2496 | SEC_LINKER_CREATED
2498 if (htab->srelgot == NULL
2499 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
2504 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2505 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2509 elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
2511 struct elf32_arm_link_hash_table *htab;
2513 htab = elf32_arm_hash_table (info);
2514 if (!htab->sgot && !create_got_section (dynobj, info))
2517 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2520 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
2521 htab->srelplt = bfd_get_section_by_name (dynobj,
2522 RELOC_SECTION (htab, ".plt"));
2523 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2525 htab->srelbss = bfd_get_section_by_name (dynobj,
2526 RELOC_SECTION (htab, ".bss"));
2528 if (htab->vxworks_p)
2530 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
2535 htab->plt_header_size = 0;
2536 htab->plt_entry_size
2537 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry);
2541 htab->plt_header_size
2542 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry);
2543 htab->plt_entry_size
2544 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry);
2551 || (!info->shared && !htab->srelbss))
2557 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2560 elf32_arm_copy_indirect_symbol (struct bfd_link_info *info,
2561 struct elf_link_hash_entry *dir,
2562 struct elf_link_hash_entry *ind)
2564 struct elf32_arm_link_hash_entry *edir, *eind;
2566 edir = (struct elf32_arm_link_hash_entry *) dir;
2567 eind = (struct elf32_arm_link_hash_entry *) ind;
2569 if (eind->relocs_copied != NULL)
2571 if (edir->relocs_copied != NULL)
2573 struct elf32_arm_relocs_copied **pp;
2574 struct elf32_arm_relocs_copied *p;
2576 /* Add reloc counts against the indirect sym to the direct sym
2577 list. Merge any entries against the same section. */
2578 for (pp = &eind->relocs_copied; (p = *pp) != NULL; )
2580 struct elf32_arm_relocs_copied *q;
2582 for (q = edir->relocs_copied; q != NULL; q = q->next)
2583 if (q->section == p->section)
2585 q->pc_count += p->pc_count;
2586 q->count += p->count;
2593 *pp = edir->relocs_copied;
2596 edir->relocs_copied = eind->relocs_copied;
2597 eind->relocs_copied = NULL;
2600 if (ind->root.type == bfd_link_hash_indirect)
2602 /* Copy over PLT info. */
2603 edir->plt_thumb_refcount += eind->plt_thumb_refcount;
2604 eind->plt_thumb_refcount = 0;
2605 edir->plt_maybe_thumb_refcount += eind->plt_maybe_thumb_refcount;
2606 eind->plt_maybe_thumb_refcount = 0;
2608 if (dir->got.refcount <= 0)
2610 edir->tls_type = eind->tls_type;
2611 eind->tls_type = GOT_UNKNOWN;
2615 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2618 /* Create an ARM elf linker hash table. */
2620 static struct bfd_link_hash_table *
2621 elf32_arm_link_hash_table_create (bfd *abfd)
2623 struct elf32_arm_link_hash_table *ret;
2624 bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
2626 ret = bfd_malloc (amt);
2630 if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
2631 elf32_arm_link_hash_newfunc,
2632 sizeof (struct elf32_arm_link_hash_entry)))
2639 ret->sgotplt = NULL;
2640 ret->srelgot = NULL;
2642 ret->srelplt = NULL;
2643 ret->sdynbss = NULL;
2644 ret->srelbss = NULL;
2645 ret->srelplt2 = NULL;
2646 ret->thumb_glue_size = 0;
2647 ret->arm_glue_size = 0;
2648 ret->bx_glue_size = 0;
2649 memset (ret->bx_glue_offset, 0, sizeof (ret->bx_glue_offset));
2650 ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
2651 ret->vfp11_erratum_glue_size = 0;
2652 ret->num_vfp11_fixes = 0;
2653 ret->bfd_of_glue_owner = NULL;
2654 ret->byteswap_code = 0;
2655 ret->target1_is_rel = 0;
2656 ret->target2_reloc = R_ARM_NONE;
2657 #ifdef FOUR_WORD_PLT
2658 ret->plt_header_size = 16;
2659 ret->plt_entry_size = 16;
2661 ret->plt_header_size = 20;
2662 ret->plt_entry_size = 12;
2669 ret->sym_sec.abfd = NULL;
2671 ret->tls_ldm_got.refcount = 0;
2673 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
2674 sizeof (struct elf32_arm_stub_hash_entry)))
2680 return &ret->root.root;
2683 /* Free the derived linker hash table. */
2686 elf32_arm_hash_table_free (struct bfd_link_hash_table *hash)
2688 struct elf32_arm_link_hash_table *ret
2689 = (struct elf32_arm_link_hash_table *) hash;
2691 bfd_hash_table_free (&ret->stub_hash_table);
2692 _bfd_generic_link_hash_table_free (hash);
2695 /* Determine if we're dealing with a Thumb only architecture. */
2698 using_thumb_only (struct elf32_arm_link_hash_table *globals)
2700 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2704 if (arch != TAG_CPU_ARCH_V7)
2707 profile = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2708 Tag_CPU_arch_profile);
2710 return profile == 'M';
2713 /* Determine if we're dealing with a Thumb-2 object. */
2716 using_thumb2 (struct elf32_arm_link_hash_table *globals)
2718 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2720 return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7;
2724 arm_stub_is_thumb (enum elf32_arm_stub_type stub_type)
2728 case arm_thumb_thumb_stub_long_branch:
2729 case arm_thumb_arm_v4t_stub_long_branch:
2740 /* Determine the type of stub needed, if any, for a call. */
2742 static enum elf32_arm_stub_type
2743 arm_type_of_stub (struct bfd_link_info *info,
2744 asection *input_sec,
2745 const Elf_Internal_Rela *rel,
2746 unsigned char st_type,
2747 struct elf32_arm_link_hash_entry *hash,
2748 bfd_vma destination)
2751 bfd_signed_vma branch_offset;
2752 unsigned int r_type;
2753 struct elf32_arm_link_hash_table * globals;
2756 enum elf32_arm_stub_type stub_type = arm_stub_none;
2758 /* We don't know the actual type of destination in case it is of
2759 type STT_SECTION: give up */
2760 if (st_type == STT_SECTION)
2763 globals = elf32_arm_hash_table (info);
2765 thumb_only = using_thumb_only (globals);
2767 thumb2 = using_thumb2 (globals);
2769 /* Determine where the call point is. */
2770 location = (input_sec->output_offset
2771 + input_sec->output_section->vma
2774 branch_offset = (bfd_signed_vma)(destination - location);
2776 r_type = ELF32_R_TYPE (rel->r_info);
2778 /* If the call will go through a PLT entry then we do not need
2780 if (globals->splt != NULL && hash != NULL && hash->root.plt.offset != (bfd_vma) -1)
2783 if (r_type == R_ARM_THM_CALL)
2786 && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET
2787 || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET)))
2789 && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET
2790 || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))
2791 || ((st_type != STT_ARM_TFUNC) && !globals->use_blx))
2793 if (st_type == STT_ARM_TFUNC)
2795 /* Thumb to thumb. */
2798 stub_type = (info->shared | globals->pic_veneer)
2799 ? ((globals->use_blx)
2800 ? arm_stub_pic_long_branch
2802 : (globals->use_blx)
2803 ? arm_stub_long_branch
2808 stub_type = (info->shared | globals->pic_veneer)
2810 : (globals->use_blx)
2811 ? arm_thumb_thumb_stub_long_branch
2818 stub_type = (info->shared | globals->pic_veneer)
2819 ? ((globals->use_blx)
2820 ? arm_stub_pic_long_branch
2822 : (globals->use_blx)
2823 ? arm_stub_long_branch
2824 : arm_thumb_arm_v4t_stub_long_branch;
2828 else if (r_type == R_ARM_CALL)
2830 if (st_type == STT_ARM_TFUNC)
2833 /* We have an extra 2-bytes reach because of the mode change
2834 (bit 24 (H) of BLX encoding). */
2835 if (branch_offset > (ARM_MAX_FWD_BRANCH_OFFSET + 2)
2836 || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET)
2837 || !globals->use_blx)
2839 stub_type = (info->shared | globals->pic_veneer)
2840 ? arm_stub_pic_long_branch
2841 : (globals->use_blx)
2842 ? arm_stub_long_branch
2843 : arm_thumb_v4t_stub_long_branch;
2849 if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET
2850 || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET))
2852 stub_type = (info->shared | globals->pic_veneer)
2853 ? arm_stub_pic_long_branch
2854 : arm_stub_long_branch;
2862 /* Build a name for an entry in the stub hash table. */
2865 elf32_arm_stub_name (const asection *input_section,
2866 const asection *sym_sec,
2867 const struct elf32_arm_link_hash_entry *hash,
2868 const Elf_Internal_Rela *rel)
2875 len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 8 + 1;
2876 stub_name = bfd_malloc (len);
2877 if (stub_name != NULL)
2878 sprintf (stub_name, "%08x_%s+%x",
2879 input_section->id & 0xffffffff,
2880 hash->root.root.root.string,
2881 (int) rel->r_addend & 0xffffffff);
2885 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
2886 stub_name = bfd_malloc (len);
2887 if (stub_name != NULL)
2888 sprintf (stub_name, "%08x_%x:%x+%x",
2889 input_section->id & 0xffffffff,
2890 sym_sec->id & 0xffffffff,
2891 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
2892 (int) rel->r_addend & 0xffffffff);
2898 /* Look up an entry in the stub hash. Stub entries are cached because
2899 creating the stub name takes a bit of time. */
2901 static struct elf32_arm_stub_hash_entry *
2902 elf32_arm_get_stub_entry (const asection *input_section,
2903 const asection *sym_sec,
2904 struct elf_link_hash_entry *hash,
2905 const Elf_Internal_Rela *rel,
2906 struct elf32_arm_link_hash_table *htab)
2908 struct elf32_arm_stub_hash_entry *stub_entry;
2909 struct elf32_arm_link_hash_entry *h = (struct elf32_arm_link_hash_entry *) hash;
2910 const asection *id_sec;
2912 if ((input_section->flags & SEC_CODE) == 0)
2915 /* If this input section is part of a group of sections sharing one
2916 stub section, then use the id of the first section in the group.
2917 Stub names need to include a section id, as there may well be
2918 more than one stub used to reach say, printf, and we need to
2919 distinguish between them. */
2920 id_sec = htab->stub_group[input_section->id].link_sec;
2922 if (h != NULL && h->stub_cache != NULL
2923 && h->stub_cache->h == h
2924 && h->stub_cache->id_sec == id_sec)
2926 stub_entry = h->stub_cache;
2932 stub_name = elf32_arm_stub_name (id_sec, sym_sec, h, rel);
2933 if (stub_name == NULL)
2936 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table,
2937 stub_name, FALSE, FALSE);
2939 h->stub_cache = stub_entry;
2947 /* Add a new stub entry to the stub hash. Not all fields of the new
2948 stub entry are initialised. */
2950 static struct elf32_arm_stub_hash_entry *
2951 elf32_arm_add_stub (const char *stub_name,
2953 struct elf32_arm_link_hash_table *htab)
2957 struct elf32_arm_stub_hash_entry *stub_entry;
2959 link_sec = htab->stub_group[section->id].link_sec;
2960 stub_sec = htab->stub_group[section->id].stub_sec;
2961 if (stub_sec == NULL)
2963 stub_sec = htab->stub_group[link_sec->id].stub_sec;
2964 if (stub_sec == NULL)
2970 namelen = strlen (link_sec->name);
2971 len = namelen + sizeof (STUB_SUFFIX);
2972 s_name = bfd_alloc (htab->stub_bfd, len);
2976 memcpy (s_name, link_sec->name, namelen);
2977 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
2978 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
2979 if (stub_sec == NULL)
2981 htab->stub_group[link_sec->id].stub_sec = stub_sec;
2983 htab->stub_group[section->id].stub_sec = stub_sec;
2986 /* Enter this entry into the linker stub hash table. */
2987 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name,
2989 if (stub_entry == NULL)
2991 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
2997 stub_entry->stub_sec = stub_sec;
2998 stub_entry->stub_offset = 0;
2999 stub_entry->id_sec = link_sec;
3004 /* Store an Arm insn into an output section not processed by
3005 elf32_arm_write_section. */
3008 put_arm_insn (struct elf32_arm_link_hash_table *htab,
3009 bfd * output_bfd, bfd_vma val, void * ptr)
3011 if (htab->byteswap_code != bfd_little_endian (output_bfd))
3012 bfd_putl32 (val, ptr);
3014 bfd_putb32 (val, ptr);
3017 /* Store a 16-bit Thumb insn into an output section not processed by
3018 elf32_arm_write_section. */
3021 put_thumb_insn (struct elf32_arm_link_hash_table *htab,
3022 bfd * output_bfd, bfd_vma val, void * ptr)
3024 if (htab->byteswap_code != bfd_little_endian (output_bfd))
3025 bfd_putl16 (val, ptr);
3027 bfd_putb16 (val, ptr);
3031 arm_build_one_stub (struct bfd_hash_entry *gen_entry,
3034 struct elf32_arm_stub_hash_entry *stub_entry;
3035 struct bfd_link_info *info;
3036 struct elf32_arm_link_hash_table *htab;
3044 const bfd_vma *template;
3046 struct elf32_arm_link_hash_table * globals;
3048 /* Massage our args to the form they really have. */
3049 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
3050 info = (struct bfd_link_info *) in_arg;
3052 globals = elf32_arm_hash_table (info);
3054 htab = elf32_arm_hash_table (info);
3055 stub_sec = stub_entry->stub_sec;
3057 /* Make a note of the offset within the stubs for this entry. */
3058 stub_entry->stub_offset = stub_sec->size;
3059 loc = stub_sec->contents + stub_entry->stub_offset;
3061 stub_bfd = stub_sec->owner;
3063 /* This is the address of the start of the stub. */
3064 stub_addr = stub_sec->output_section->vma + stub_sec->output_offset
3065 + stub_entry->stub_offset;
3067 /* This is the address of the stub destination. */
3068 sym_value = (stub_entry->target_value
3069 + stub_entry->target_section->output_offset
3070 + stub_entry->target_section->output_section->vma);
3072 switch (stub_entry->stub_type)
3074 case arm_stub_long_branch:
3075 template = arm_long_branch_stub;
3076 template_size = (sizeof (arm_long_branch_stub) / sizeof (bfd_vma)) * 4;
3078 case arm_thumb_v4t_stub_long_branch:
3079 template = arm_thumb_v4t_long_branch_stub;
3080 template_size = (sizeof (arm_thumb_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3082 case arm_thumb_thumb_stub_long_branch:
3083 template = arm_thumb_thumb_long_branch_stub;
3084 template_size = (sizeof (arm_thumb_thumb_long_branch_stub) / sizeof (bfd_vma)) * 4;
3086 case arm_thumb_arm_v4t_stub_long_branch:
3087 template = arm_thumb_arm_v4t_long_branch_stub;
3088 template_size = (sizeof (arm_thumb_arm_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3090 case arm_stub_pic_long_branch:
3091 template = arm_pic_long_branch_stub;
3092 template_size = (sizeof (arm_pic_long_branch_stub) / sizeof (bfd_vma)) * 4;
3100 for (i = 0; i < (template_size / 4); i++)
3102 /* A 0 pattern is a placeholder, every other pattern is an
3104 if (template[i] != 0)
3105 put_arm_insn (globals, stub_bfd, template[i], loc + size);
3107 bfd_put_32 (stub_bfd, template[i], loc + size);
3111 stub_sec->size += size;
3113 /* Destination is Thumb. Force bit 0 to 1 to reflect this. */
3114 if (stub_entry->st_type == STT_ARM_TFUNC)
3117 switch (stub_entry->stub_type)
3119 case arm_stub_long_branch:
3120 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
3121 stub_bfd, stub_sec, stub_sec->contents,
3122 stub_entry->stub_offset + 4, sym_value, 0);
3124 case arm_thumb_v4t_stub_long_branch:
3125 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
3126 stub_bfd, stub_sec, stub_sec->contents,
3127 stub_entry->stub_offset + 8, sym_value, 0);
3129 case arm_thumb_thumb_stub_long_branch:
3130 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
3131 stub_bfd, stub_sec, stub_sec->contents,
3132 stub_entry->stub_offset + 12, sym_value, 0);
3134 case arm_thumb_arm_v4t_stub_long_branch:
3135 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
3136 stub_bfd, stub_sec, stub_sec->contents,
3137 stub_entry->stub_offset + 16, sym_value, 0);
3139 case arm_stub_pic_long_branch:
3140 /* We want the value relative to the address 8 bytes from the
3141 start of the stub. */
3142 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_REL32),
3143 stub_bfd, stub_sec, stub_sec->contents,
3144 stub_entry->stub_offset + 8, sym_value, 0);
3153 /* As above, but don't actually build the stub. Just bump offset so
3154 we know stub section sizes. */
3157 arm_size_one_stub (struct bfd_hash_entry *gen_entry,
3160 struct elf32_arm_stub_hash_entry *stub_entry;
3161 struct elf32_arm_link_hash_table *htab;
3162 const bfd_vma *template;
3167 /* Massage our args to the form they really have. */
3168 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
3169 htab = (struct elf32_arm_link_hash_table *) in_arg;
3171 switch (stub_entry->stub_type)
3173 case arm_stub_long_branch:
3174 template = arm_long_branch_stub;
3175 template_size = (sizeof (arm_long_branch_stub) / sizeof (bfd_vma)) * 4;
3177 case arm_thumb_v4t_stub_long_branch:
3178 template = arm_thumb_v4t_long_branch_stub;
3179 template_size = (sizeof (arm_thumb_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3181 case arm_thumb_thumb_stub_long_branch:
3182 template = arm_thumb_thumb_long_branch_stub;
3183 template_size = (sizeof (arm_thumb_thumb_long_branch_stub) / sizeof (bfd_vma)) * 4;
3185 case arm_thumb_arm_v4t_stub_long_branch:
3186 template = arm_thumb_arm_v4t_long_branch_stub;
3187 template_size = (sizeof (arm_thumb_arm_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3189 case arm_stub_pic_long_branch:
3190 template = arm_pic_long_branch_stub;
3191 template_size = (sizeof (arm_pic_long_branch_stub) / sizeof (bfd_vma)) * 4;
3200 for (i = 0; i < (template_size / 4); i++)
3202 size = (size + 7) & ~7;
3203 stub_entry->stub_sec->size += size;
3207 /* External entry points for sizing and building linker stubs. */
3209 /* Set up various things so that we can make a list of input sections
3210 for each output section included in the link. Returns -1 on error,
3211 0 when no stubs will be needed, and 1 on success. */
3214 elf32_arm_setup_section_lists (bfd *output_bfd,
3215 struct bfd_link_info *info)
3218 unsigned int bfd_count;
3219 int top_id, top_index;
3221 asection **input_list, **list;
3223 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3225 if (! is_elf_hash_table (htab))
3228 /* Count the number of input BFDs and find the top input section id. */
3229 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
3231 input_bfd = input_bfd->link_next)
3234 for (section = input_bfd->sections;
3236 section = section->next)
3238 if (top_id < section->id)
3239 top_id = section->id;
3242 htab->bfd_count = bfd_count;
3244 amt = sizeof (struct map_stub) * (top_id + 1);
3245 htab->stub_group = bfd_zmalloc (amt);
3246 if (htab->stub_group == NULL)
3249 /* We can't use output_bfd->section_count here to find the top output
3250 section index as some sections may have been removed, and
3251 _bfd_strip_section_from_output doesn't renumber the indices. */
3252 for (section = output_bfd->sections, top_index = 0;
3254 section = section->next)
3256 if (top_index < section->index)
3257 top_index = section->index;
3260 htab->top_index = top_index;
3261 amt = sizeof (asection *) * (top_index + 1);
3262 input_list = bfd_malloc (amt);
3263 htab->input_list = input_list;
3264 if (input_list == NULL)
3267 /* For sections we aren't interested in, mark their entries with a
3268 value we can check later. */
3269 list = input_list + top_index;
3271 *list = bfd_abs_section_ptr;
3272 while (list-- != input_list);
3274 for (section = output_bfd->sections;
3276 section = section->next)
3278 if ((section->flags & SEC_CODE) != 0)
3279 input_list[section->index] = NULL;
3285 /* The linker repeatedly calls this function for each input section,
3286 in the order that input sections are linked into output sections.
3287 Build lists of input sections to determine groupings between which
3288 we may insert linker stubs. */
3291 elf32_arm_next_input_section (struct bfd_link_info *info,
3294 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3296 if (isec->output_section->index <= htab->top_index)
3298 asection **list = htab->input_list + isec->output_section->index;
3300 if (*list != bfd_abs_section_ptr)
3302 /* Steal the link_sec pointer for our list. */
3303 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3304 /* This happens to make the list in reverse order,
3305 which is what we want. */
3306 PREV_SEC (isec) = *list;
3312 /* See whether we can group stub sections together. Grouping stub
3313 sections may result in fewer stubs. More importantly, we need to
3314 put all .init* and .fini* stubs at the beginning of the .init or
3315 .fini output sections respectively, because glibc splits the
3316 _init and _fini functions into multiple parts. Putting a stub in
3317 the middle of a function is not a good idea. */
3320 group_sections (struct elf32_arm_link_hash_table *htab,
3321 bfd_size_type stub_group_size,
3322 bfd_boolean stubs_always_before_branch)
3324 asection **list = htab->input_list + htab->top_index;
3328 asection *tail = *list;
3330 if (tail == bfd_abs_section_ptr)
3333 while (tail != NULL)
3337 bfd_size_type total;
3341 while ((prev = PREV_SEC (curr)) != NULL
3342 && ((total += curr->output_offset - prev->output_offset)
3346 /* OK, the size from the start of CURR to the end is less
3347 than stub_group_size and thus can be handled by one stub
3348 section. (Or the tail section is itself larger than
3349 stub_group_size, in which case we may be toast.)
3350 We should really be keeping track of the total size of
3351 stubs added here, as stubs contribute to the final output
3355 prev = PREV_SEC (tail);
3356 /* Set up this stub group. */
3357 htab->stub_group[tail->id].link_sec = curr;
3359 while (tail != curr && (tail = prev) != NULL);
3361 /* But wait, there's more! Input sections up to stub_group_size
3362 bytes before the stub section can be handled by it too. */
3363 if (!stubs_always_before_branch)
3367 && ((total += tail->output_offset - prev->output_offset)
3371 prev = PREV_SEC (tail);
3372 htab->stub_group[tail->id].link_sec = curr;
3378 while (list-- != htab->input_list);
3380 free (htab->input_list);
3384 /* Determine and set the size of the stub section for a final link.
3386 The basic idea here is to examine all the relocations looking for
3387 PC-relative calls to a target that is unreachable with a "bl"
3391 elf32_arm_size_stubs (bfd *output_bfd,
3393 struct bfd_link_info *info,
3394 bfd_signed_vma group_size,
3395 asection * (*add_stub_section) (const char *, asection *),
3396 void (*layout_sections_again) (void))
3398 bfd_size_type stub_group_size;
3399 bfd_boolean stubs_always_before_branch;
3400 bfd_boolean stub_changed = 0;
3401 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3403 /* Propagate mach to stub bfd, because it may not have been
3404 finalized when we created stub_bfd. */
3405 bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
3406 bfd_get_mach (output_bfd));
3408 /* Stash our params away. */
3409 htab->stub_bfd = stub_bfd;
3410 htab->add_stub_section = add_stub_section;
3411 htab->layout_sections_again = layout_sections_again;
3412 stubs_always_before_branch = group_size < 0;
3414 stub_group_size = -group_size;
3416 stub_group_size = group_size;
3418 if (stub_group_size == 1)
3420 /* Default values. */
3421 /* Thumb branch range is +-4MB has to be used as the default
3422 maximum size (a given section can contain both ARM and Thumb
3423 code, so the worst case has to be taken into account).
3425 This value is 24K less than that, which allows for 2025
3426 12-byte stubs. If we exceed that, then we will fail to link.
3427 The user will have to relink with an explicit group size
3429 stub_group_size = 4170000;
3432 group_sections (htab, stub_group_size, stubs_always_before_branch);
3437 unsigned int bfd_indx;
3440 for (input_bfd = info->input_bfds, bfd_indx = 0;
3442 input_bfd = input_bfd->link_next, bfd_indx++)
3444 Elf_Internal_Shdr *symtab_hdr;
3446 Elf_Internal_Sym *local_syms = NULL;
3448 /* We'll need the symbol table in a second. */
3449 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3450 if (symtab_hdr->sh_info == 0)
3453 /* Walk over each section attached to the input bfd. */
3454 for (section = input_bfd->sections;
3456 section = section->next)
3458 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
3460 /* If there aren't any relocs, then there's nothing more
3462 if ((section->flags & SEC_RELOC) == 0
3463 || section->reloc_count == 0
3464 || (section->flags & SEC_CODE) == 0)
3467 /* If this section is a link-once section that will be
3468 discarded, then don't create any stubs. */
3469 if (section->output_section == NULL
3470 || section->output_section->owner != output_bfd)
3473 /* Get the relocs. */
3475 = _bfd_elf_link_read_relocs (input_bfd, section, NULL,
3476 NULL, info->keep_memory);
3477 if (internal_relocs == NULL)
3478 goto error_ret_free_local;
3480 /* Now examine each relocation. */
3481 irela = internal_relocs;
3482 irelaend = irela + section->reloc_count;
3483 for (; irela < irelaend; irela++)
3485 unsigned int r_type, r_indx;
3486 enum elf32_arm_stub_type stub_type;
3487 struct elf32_arm_stub_hash_entry *stub_entry;
3490 bfd_vma destination;
3491 struct elf32_arm_link_hash_entry *hash;
3492 const char *sym_name;
3494 const asection *id_sec;
3495 unsigned char st_type;
3497 r_type = ELF32_R_TYPE (irela->r_info);
3498 r_indx = ELF32_R_SYM (irela->r_info);
3500 if (r_type >= (unsigned int) R_ARM_max)
3502 bfd_set_error (bfd_error_bad_value);
3503 error_ret_free_internal:
3504 if (elf_section_data (section)->relocs == NULL)
3505 free (internal_relocs);
3506 goto error_ret_free_local;
3509 /* Only look for stubs on call instructions. */
3510 if ((r_type != (unsigned int) R_ARM_CALL)
3511 && (r_type != (unsigned int) R_ARM_THM_CALL))
3514 /* Now determine the call target, its name, value,
3521 if (r_indx < symtab_hdr->sh_info)
3523 /* It's a local symbol. */
3524 Elf_Internal_Sym *sym;
3525 Elf_Internal_Shdr *hdr;
3527 if (local_syms == NULL)
3530 = (Elf_Internal_Sym *) symtab_hdr->contents;
3531 if (local_syms == NULL)
3533 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3534 symtab_hdr->sh_info, 0,
3536 if (local_syms == NULL)
3537 goto error_ret_free_internal;
3540 sym = local_syms + r_indx;
3541 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
3542 sym_sec = hdr->bfd_section;
3543 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
3544 sym_value = sym->st_value;
3545 destination = (sym_value + irela->r_addend
3546 + sym_sec->output_offset
3547 + sym_sec->output_section->vma);
3548 st_type = ELF_ST_TYPE (sym->st_info);
3550 = bfd_elf_string_from_elf_section (input_bfd,
3551 symtab_hdr->sh_link,
3556 /* It's an external symbol. */
3559 e_indx = r_indx - symtab_hdr->sh_info;
3560 hash = ((struct elf32_arm_link_hash_entry *)
3561 elf_sym_hashes (input_bfd)[e_indx]);
3563 while (hash->root.root.type == bfd_link_hash_indirect
3564 || hash->root.root.type == bfd_link_hash_warning)
3565 hash = ((struct elf32_arm_link_hash_entry *)
3566 hash->root.root.u.i.link);
3568 if (hash->root.root.type == bfd_link_hash_defined
3569 || hash->root.root.type == bfd_link_hash_defweak)
3571 sym_sec = hash->root.root.u.def.section;
3572 sym_value = hash->root.root.u.def.value;
3573 if (sym_sec->output_section != NULL)
3574 destination = (sym_value + irela->r_addend
3575 + sym_sec->output_offset
3576 + sym_sec->output_section->vma);
3578 else if (hash->root.root.type == bfd_link_hash_undefweak
3579 || hash->root.root.type == bfd_link_hash_undefined)
3580 /* For a shared library, these will need a PLT stub,
3581 which is treated separately.
3582 For absolute code, they cannot be handled. */
3586 bfd_set_error (bfd_error_bad_value);
3587 goto error_ret_free_internal;
3589 st_type = ELF_ST_TYPE (hash->root.type);
3590 sym_name = hash->root.root.root.string;
3593 /* Determine what (if any) linker stub is needed. */
3594 stub_type = arm_type_of_stub (info, section, irela, st_type,
3596 if (stub_type == arm_stub_none)
3599 /* Support for grouping stub sections. */
3600 id_sec = htab->stub_group[section->id].link_sec;
3602 /* Get the name of this stub. */
3603 stub_name = elf32_arm_stub_name (id_sec, sym_sec, hash, irela);
3605 goto error_ret_free_internal;
3607 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table,
3610 if (stub_entry != NULL)
3612 /* The proper stub has already been created. */
3617 stub_entry = elf32_arm_add_stub (stub_name, section, htab);
3618 if (stub_entry == NULL)
3621 goto error_ret_free_internal;
3624 stub_entry->target_value = sym_value;
3625 stub_entry->target_section = sym_sec;
3626 stub_entry->stub_type = stub_type;
3627 stub_entry->h = hash;
3628 stub_entry->st_type = st_type;
3630 if (sym_name == NULL)
3631 sym_name = "unnamed";
3632 stub_entry->output_name
3633 = bfd_alloc (htab->stub_bfd,
3634 sizeof (THUMB2ARM_GLUE_ENTRY_NAME)
3635 + strlen (sym_name));
3636 if (stub_entry->output_name == NULL)
3639 goto error_ret_free_internal;
3642 /* For historical reasons, use the existing names for
3643 ARM-to-Thumb and Thumb-to-ARM stubs. */
3644 if (r_type == (unsigned int) R_ARM_THM_CALL
3645 && st_type != STT_ARM_TFUNC)
3646 sprintf (stub_entry->output_name, THUMB2ARM_GLUE_ENTRY_NAME,
3648 else if (r_type == (unsigned int) R_ARM_CALL
3649 && st_type == STT_ARM_TFUNC)
3650 sprintf (stub_entry->output_name, ARM2THUMB_GLUE_ENTRY_NAME,
3653 sprintf (stub_entry->output_name, STUB_ENTRY_NAME,
3656 stub_changed = TRUE;
3659 /* We're done with the internal relocs, free them. */
3660 if (elf_section_data (section)->relocs == NULL)
3661 free (internal_relocs);
3668 /* OK, we've added some stubs. Find out the new size of the
3670 for (stub_sec = htab->stub_bfd->sections;
3672 stub_sec = stub_sec->next)
3675 bfd_hash_traverse (&htab->stub_hash_table, arm_size_one_stub, htab);
3677 /* Ask the linker to do its stuff. */
3678 (*htab->layout_sections_again) ();
3679 stub_changed = FALSE;
3684 error_ret_free_local:
3688 /* Build all the stubs associated with the current output file. The
3689 stubs are kept in a hash table attached to the main linker hash
3690 table. We also set up the .plt entries for statically linked PIC
3691 functions here. This function is called via arm_elf_finish in the
3695 elf32_arm_build_stubs (struct bfd_link_info *info)
3698 struct bfd_hash_table *table;
3699 struct elf32_arm_link_hash_table *htab;
3701 htab = elf32_arm_hash_table (info);
3703 for (stub_sec = htab->stub_bfd->sections;
3705 stub_sec = stub_sec->next)
3709 /* Ignore non-stub sections */
3710 if (!strstr (stub_sec->name, STUB_SUFFIX))
3713 /* Allocate memory to hold the linker stubs. */
3714 size = stub_sec->size;
3715 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
3716 if (stub_sec->contents == NULL && size != 0)
3721 /* Build the stubs as directed by the stub hash table. */
3722 table = &htab->stub_hash_table;
3723 bfd_hash_traverse (table, arm_build_one_stub, info);
3728 /* Locate the Thumb encoded calling stub for NAME. */
3730 static struct elf_link_hash_entry *
3731 find_thumb_glue (struct bfd_link_info *link_info,
3733 char **error_message)
3736 struct elf_link_hash_entry *hash;
3737 struct elf32_arm_link_hash_table *hash_table;
3739 /* We need a pointer to the armelf specific hash table. */
3740 hash_table = elf32_arm_hash_table (link_info);
3742 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
3743 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
3745 BFD_ASSERT (tmp_name);
3747 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
3749 hash = elf_link_hash_lookup
3750 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
3753 && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"),
3754 tmp_name, name) == -1)
3755 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
3762 /* Locate the ARM encoded calling stub for NAME. */
3764 static struct elf_link_hash_entry *
3765 find_arm_glue (struct bfd_link_info *link_info,
3767 char **error_message)
3770 struct elf_link_hash_entry *myh;
3771 struct elf32_arm_link_hash_table *hash_table;
3773 /* We need a pointer to the elfarm specific hash table. */
3774 hash_table = elf32_arm_hash_table (link_info);
3776 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
3777 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
3779 BFD_ASSERT (tmp_name);
3781 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
3783 myh = elf_link_hash_lookup
3784 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
3787 && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"),
3788 tmp_name, name) == -1)
3789 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
3796 /* ARM->Thumb glue (static images):
3800 ldr r12, __func_addr
3803 .word func @ behave as if you saw a ARM_32 reloc.
3810 .word func @ behave as if you saw a ARM_32 reloc.
3812 (relocatable images)
3815 ldr r12, __func_offset
3822 #define ARM2THUMB_STATIC_GLUE_SIZE 12
3823 static const insn32 a2t1_ldr_insn = 0xe59fc000;
3824 static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
3825 static const insn32 a2t3_func_addr_insn = 0x00000001;
3827 #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
3828 static const insn32 a2t1v5_ldr_insn = 0xe51ff004;
3829 static const insn32 a2t2v5_func_addr_insn = 0x00000001;
3831 #define ARM2THUMB_PIC_GLUE_SIZE 16
3832 static const insn32 a2t1p_ldr_insn = 0xe59fc004;
3833 static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
3834 static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
3836 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
3840 __func_from_thumb: __func_from_thumb:
3842 nop ldr r6, __func_addr
3844 __func_change_to_arm: bx r6
3846 __func_back_to_thumb:
3852 #define THUMB2ARM_GLUE_SIZE 8
3853 static const insn16 t2a1_bx_pc_insn = 0x4778;
3854 static const insn16 t2a2_noop_insn = 0x46c0;
3855 static const insn32 t2a3_b_insn = 0xea000000;
3857 #define VFP11_ERRATUM_VENEER_SIZE 8
3859 #define ARM_BX_VENEER_SIZE 12
3860 static const insn32 armbx1_tst_insn = 0xe3100001;
3861 static const insn32 armbx2_moveq_insn = 0x01a0f000;
3862 static const insn32 armbx3_bx_insn = 0xe12fff10;
3864 #ifndef ELFARM_NABI_C_INCLUDED
3866 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
3870 struct elf32_arm_link_hash_table * globals;
3872 globals = elf32_arm_hash_table (info);
3874 BFD_ASSERT (globals != NULL);
3876 if (globals->arm_glue_size != 0)
3878 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
3880 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
3881 ARM2THUMB_GLUE_SECTION_NAME);
3883 BFD_ASSERT (s != NULL);
3885 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size);
3887 BFD_ASSERT (s->size == globals->arm_glue_size);
3891 if (globals->thumb_glue_size != 0)
3893 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
3895 s = bfd_get_section_by_name
3896 (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
3898 BFD_ASSERT (s != NULL);
3900 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size);
3902 BFD_ASSERT (s->size == globals->thumb_glue_size);
3906 if (globals->vfp11_erratum_glue_size != 0)
3908 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
3910 s = bfd_get_section_by_name
3911 (globals->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
3913 BFD_ASSERT (s != NULL);
3915 foo = bfd_alloc (globals->bfd_of_glue_owner,
3916 globals->vfp11_erratum_glue_size);
3918 BFD_ASSERT (s->size == globals->vfp11_erratum_glue_size);
3922 if (globals->bx_glue_size != 0)
3924 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
3926 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
3927 ARM_BX_GLUE_SECTION_NAME);
3929 BFD_ASSERT (s != NULL);
3931 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->bx_glue_size);
3933 BFD_ASSERT (s->size == globals->bx_glue_size);
3940 /* Allocate space and symbols for calling a Thumb function from Arm mode.
3941 returns the symbol identifying the stub. */
3943 static struct elf_link_hash_entry *
3944 record_arm_to_thumb_glue (struct bfd_link_info * link_info,
3945 struct elf_link_hash_entry * h)
3947 const char * name = h->root.root.string;
3950 struct elf_link_hash_entry * myh;
3951 struct bfd_link_hash_entry * bh;
3952 struct elf32_arm_link_hash_table * globals;
3956 globals = elf32_arm_hash_table (link_info);
3958 BFD_ASSERT (globals != NULL);
3959 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
3961 s = bfd_get_section_by_name
3962 (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
3964 BFD_ASSERT (s != NULL);
3966 tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
3968 BFD_ASSERT (tmp_name);
3970 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
3972 myh = elf_link_hash_lookup
3973 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
3977 /* We've already seen this guy. */
3982 /* The only trick here is using hash_table->arm_glue_size as the value.
3983 Even though the section isn't allocated yet, this is where we will be
3984 putting it. The +1 on the value marks that the stub has not been
3985 output yet - not that it is a Thumb function. */
3987 val = globals->arm_glue_size + 1;
3988 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
3989 tmp_name, BSF_GLOBAL, s, val,
3990 NULL, TRUE, FALSE, &bh);
3992 myh = (struct elf_link_hash_entry *) bh;
3993 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
3994 myh->forced_local = 1;
3998 if (link_info->shared || globals->root.is_relocatable_executable
3999 || globals->pic_veneer)
4000 size = ARM2THUMB_PIC_GLUE_SIZE;
4001 else if (globals->use_blx)
4002 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
4004 size = ARM2THUMB_STATIC_GLUE_SIZE;
4007 globals->arm_glue_size += size;
4013 record_thumb_to_arm_glue (struct bfd_link_info *link_info,
4014 struct elf_link_hash_entry *h)
4016 const char *name = h->root.root.string;
4019 struct elf_link_hash_entry *myh;
4020 struct bfd_link_hash_entry *bh;
4021 struct elf32_arm_link_hash_table *hash_table;
4024 hash_table = elf32_arm_hash_table (link_info);
4026 BFD_ASSERT (hash_table != NULL);
4027 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
4029 s = bfd_get_section_by_name
4030 (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
4032 BFD_ASSERT (s != NULL);
4034 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
4035 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
4037 BFD_ASSERT (tmp_name);
4039 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
4041 myh = elf_link_hash_lookup
4042 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
4046 /* We've already seen this guy. */
4051 /* The only trick here is using hash_table->thumb_glue_size as the value.
4052 Even though the section isn't allocated yet, this is where we will be
4053 putting it. The +1 on the value marks that the stub has not been
4054 output yet - not that it is a Thumb function. */
4056 val = hash_table->thumb_glue_size + 1;
4057 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4058 tmp_name, BSF_GLOBAL, s, val,
4059 NULL, TRUE, FALSE, &bh);
4061 /* If we mark it 'Thumb', the disassembler will do a better job. */
4062 myh = (struct elf_link_hash_entry *) bh;
4063 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
4064 myh->forced_local = 1;
4068 #define CHANGE_TO_ARM "__%s_change_to_arm"
4069 #define BACK_FROM_ARM "__%s_back_from_arm"
4071 /* Allocate another symbol to mark where we switch to Arm mode. */
4072 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
4073 + strlen (CHANGE_TO_ARM) + 1);
4075 BFD_ASSERT (tmp_name);
4077 sprintf (tmp_name, CHANGE_TO_ARM, name);
4080 val = hash_table->thumb_glue_size + 4,
4081 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4082 tmp_name, BSF_LOCAL, s, val,
4083 NULL, TRUE, FALSE, &bh);
4087 s->size += THUMB2ARM_GLUE_SIZE;
4088 hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
4094 /* Allocate space for ARMv4 BX veneers. */
4097 record_arm_bx_glue (struct bfd_link_info * link_info, int reg)
4100 struct elf32_arm_link_hash_table *globals;
4102 struct elf_link_hash_entry *myh;
4103 struct bfd_link_hash_entry *bh;
4106 /* BX PC does not need a veneer. */
4110 globals = elf32_arm_hash_table (link_info);
4112 BFD_ASSERT (globals != NULL);
4113 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4115 /* Check if this veneer has already been allocated. */
4116 if (globals->bx_glue_offset[reg])
4119 s = bfd_get_section_by_name
4120 (globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME);
4122 BFD_ASSERT (s != NULL);
4124 /* Add symbol for veneer. */
4125 tmp_name = bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1);
4127 BFD_ASSERT (tmp_name);
4129 sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg);
4131 myh = elf_link_hash_lookup
4132 (&(globals)->root, tmp_name, FALSE, FALSE, FALSE);
4134 BFD_ASSERT (myh == NULL);
4137 val = globals->bx_glue_size;
4138 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
4139 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
4140 NULL, TRUE, FALSE, &bh);
4142 myh = (struct elf_link_hash_entry *) bh;
4143 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4144 myh->forced_local = 1;
4146 s->size += ARM_BX_VENEER_SIZE;
4147 globals->bx_glue_offset[reg] = globals->bx_glue_size | 2;
4148 globals->bx_glue_size += ARM_BX_VENEER_SIZE;
4152 /* Add an entry to the code/data map for section SEC. */
4155 elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma)
4157 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
4158 unsigned int newidx;
4160 if (sec_data->map == NULL)
4162 sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map));
4163 sec_data->mapcount = 0;
4164 sec_data->mapsize = 1;
4167 newidx = sec_data->mapcount++;
4169 if (sec_data->mapcount > sec_data->mapsize)
4171 sec_data->mapsize *= 2;
4172 sec_data->map = bfd_realloc_or_free (sec_data->map, sec_data->mapsize
4173 * sizeof (elf32_arm_section_map));
4178 sec_data->map[newidx].vma = vma;
4179 sec_data->map[newidx].type = type;
4184 /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
4185 veneers are handled for now. */
4188 record_vfp11_erratum_veneer (struct bfd_link_info *link_info,
4189 elf32_vfp11_erratum_list *branch,
4191 asection *branch_sec,
4192 unsigned int offset)
4195 struct elf32_arm_link_hash_table *hash_table;
4197 struct elf_link_hash_entry *myh;
4198 struct bfd_link_hash_entry *bh;
4200 struct _arm_elf_section_data *sec_data;
4202 elf32_vfp11_erratum_list *newerr;
4204 hash_table = elf32_arm_hash_table (link_info);
4206 BFD_ASSERT (hash_table != NULL);
4207 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
4209 s = bfd_get_section_by_name
4210 (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
4212 sec_data = elf32_arm_section_data (s);
4214 BFD_ASSERT (s != NULL);
4216 tmp_name = bfd_malloc ((bfd_size_type) strlen
4217 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
4219 BFD_ASSERT (tmp_name);
4221 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
4222 hash_table->num_vfp11_fixes);
4224 myh = elf_link_hash_lookup
4225 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
4227 BFD_ASSERT (myh == NULL);
4230 val = hash_table->vfp11_erratum_glue_size;
4231 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4232 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
4233 NULL, TRUE, FALSE, &bh);
4235 myh = (struct elf_link_hash_entry *) bh;
4236 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4237 myh->forced_local = 1;
4239 /* Link veneer back to calling location. */
4240 errcount = ++(sec_data->erratumcount);
4241 newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
4243 newerr->type = VFP11_ERRATUM_ARM_VENEER;
4245 newerr->u.v.branch = branch;
4246 newerr->u.v.id = hash_table->num_vfp11_fixes;
4247 branch->u.b.veneer = newerr;
4249 newerr->next = sec_data->erratumlist;
4250 sec_data->erratumlist = newerr;
4252 /* A symbol for the return from the veneer. */
4253 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
4254 hash_table->num_vfp11_fixes);
4256 myh = elf_link_hash_lookup
4257 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
4264 _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL,
4265 branch_sec, val, NULL, TRUE, FALSE, &bh);
4267 myh = (struct elf_link_hash_entry *) bh;
4268 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4269 myh->forced_local = 1;
4273 /* Generate a mapping symbol for the veneer section, and explicitly add an
4274 entry for that symbol to the code/data map for the section. */
4275 if (hash_table->vfp11_erratum_glue_size == 0)
4278 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
4279 ever requires this erratum fix. */
4280 _bfd_generic_link_add_one_symbol (link_info,
4281 hash_table->bfd_of_glue_owner, "$a",
4282 BSF_LOCAL, s, 0, NULL,
4285 myh = (struct elf_link_hash_entry *) bh;
4286 myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
4287 myh->forced_local = 1;
4289 /* The elf32_arm_init_maps function only cares about symbols from input
4290 BFDs. We must make a note of this generated mapping symbol
4291 ourselves so that code byteswapping works properly in
4292 elf32_arm_write_section. */
4293 elf32_arm_section_map_add (s, 'a', 0);
4296 s->size += VFP11_ERRATUM_VENEER_SIZE;
4297 hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE;
4298 hash_table->num_vfp11_fixes++;
4300 /* The offset of the veneer. */
4304 /* Add the glue sections to ABFD. This function is called from the
4305 linker scripts in ld/emultempl/{armelf}.em. */
4308 bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
4309 struct bfd_link_info *info)
4314 /* If we are only performing a partial
4315 link do not bother adding the glue. */
4316 if (info->relocatable)
4319 /* linker stubs don't need glue */
4320 if (!strcmp (abfd->filename, "linker stubs"))
4323 sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME);
4327 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
4328 will prevent elf_link_input_bfd() from processing the contents
4330 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4331 | SEC_CODE | SEC_READONLY);
4333 sec = bfd_make_section_with_flags (abfd,
4334 ARM2THUMB_GLUE_SECTION_NAME,
4338 || !bfd_set_section_alignment (abfd, sec, 2))
4341 /* Set the gc mark to prevent the section from being removed by garbage
4342 collection, despite the fact that no relocs refer to this section. */
4346 sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME);
4350 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4351 | SEC_CODE | SEC_READONLY);
4353 sec = bfd_make_section_with_flags (abfd,
4354 THUMB2ARM_GLUE_SECTION_NAME,
4358 || !bfd_set_section_alignment (abfd, sec, 2))
4364 sec = bfd_get_section_by_name (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME);
4368 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4369 | SEC_CODE | SEC_READONLY);
4371 sec = bfd_make_section_with_flags (abfd,
4372 VFP11_ERRATUM_VENEER_SECTION_NAME,
4376 || !bfd_set_section_alignment (abfd, sec, 2))
4382 sec = bfd_get_section_by_name (abfd, ARM_BX_GLUE_SECTION_NAME);
4386 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
4387 | SEC_CODE | SEC_READONLY);
4389 sec = bfd_make_section_with_flags (abfd,
4390 ARM_BX_GLUE_SECTION_NAME,
4394 || !bfd_set_section_alignment (abfd, sec, 2))
4403 /* Select a BFD to be used to hold the sections used by the glue code.
4404 This function is called from the linker scripts in ld/emultempl/
4408 bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
4410 struct elf32_arm_link_hash_table *globals;
4412 /* If we are only performing a partial link
4413 do not bother getting a bfd to hold the glue. */
4414 if (info->relocatable)
4417 /* Make sure we don't attach the glue sections to a dynamic object. */
4418 BFD_ASSERT (!(abfd->flags & DYNAMIC));
4420 globals = elf32_arm_hash_table (info);
4422 BFD_ASSERT (globals != NULL);
4424 if (globals->bfd_of_glue_owner != NULL)
4427 /* Save the bfd for later use. */
4428 globals->bfd_of_glue_owner = abfd;
4434 check_use_blx (struct elf32_arm_link_hash_table *globals)
4436 if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
4438 globals->use_blx = 1;
4442 bfd_elf32_arm_process_before_allocation (bfd *abfd,
4443 struct bfd_link_info *link_info)
4445 Elf_Internal_Shdr *symtab_hdr;
4446 Elf_Internal_Rela *internal_relocs = NULL;
4447 Elf_Internal_Rela *irel, *irelend;
4448 bfd_byte *contents = NULL;
4451 struct elf32_arm_link_hash_table *globals;
4453 /* If we are only performing a partial link do not bother
4454 to construct any glue. */
4455 if (link_info->relocatable)
4458 /* Here we have a bfd that is to be included on the link. We have a
4459 hook to do reloc rummaging, before section sizes are nailed down. */
4460 globals = elf32_arm_hash_table (link_info);
4462 BFD_ASSERT (globals != NULL);
4464 check_use_blx (globals);
4466 if (globals->byteswap_code && !bfd_big_endian (abfd))
4468 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
4473 /* PR 5398: If we have not decided to include any loadable sections in
4474 the output then we will not have a glue owner bfd. This is OK, it
4475 just means that there is nothing else for us to do here. */
4476 if (globals->bfd_of_glue_owner == NULL)
4479 /* Rummage around all the relocs and map the glue vectors. */
4480 sec = abfd->sections;
4485 for (; sec != NULL; sec = sec->next)
4487 if (sec->reloc_count == 0)
4490 if ((sec->flags & SEC_EXCLUDE) != 0)
4493 symtab_hdr = & elf_symtab_hdr (abfd);
4495 /* Load the relocs. */
4497 = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, FALSE);
4499 if (internal_relocs == NULL)
4502 irelend = internal_relocs + sec->reloc_count;
4503 for (irel = internal_relocs; irel < irelend; irel++)
4506 unsigned long r_index;
4508 struct elf_link_hash_entry *h;
4510 r_type = ELF32_R_TYPE (irel->r_info);
4511 r_index = ELF32_R_SYM (irel->r_info);
4513 /* These are the only relocation types we care about. */
4514 if ( r_type != R_ARM_PC24
4515 && r_type != R_ARM_PLT32
4516 && r_type != R_ARM_JUMP24
4517 && r_type != R_ARM_THM_JUMP24
4518 && (r_type != R_ARM_V4BX || globals->fix_v4bx < 2))
4521 /* Get the section contents if we haven't done so already. */
4522 if (contents == NULL)
4524 /* Get cached copy if it exists. */
4525 if (elf_section_data (sec)->this_hdr.contents != NULL)
4526 contents = elf_section_data (sec)->this_hdr.contents;
4529 /* Go get them off disk. */
4530 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
4535 if (r_type == R_ARM_V4BX)
4539 reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf;
4540 record_arm_bx_glue (link_info, reg);
4544 /* If the relocation is not against a symbol it cannot concern us. */
4547 /* We don't care about local symbols. */
4548 if (r_index < symtab_hdr->sh_info)
4551 /* This is an external symbol. */
4552 r_index -= symtab_hdr->sh_info;
4553 h = (struct elf_link_hash_entry *)
4554 elf_sym_hashes (abfd)[r_index];
4556 /* If the relocation is against a static symbol it must be within
4557 the current section and so cannot be a cross ARM/Thumb relocation. */
4561 /* If the call will go through a PLT entry then we do not need
4563 if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1)
4571 /* This one is a call from arm code. We need to look up
4572 the target of the call. If it is a thumb target, we
4574 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
4575 && !(r_type == R_ARM_CALL && globals->use_blx))
4576 record_arm_to_thumb_glue (link_info, h);
4579 case R_ARM_THM_JUMP24:
4580 /* This one is a call from thumb code. We look
4581 up the target of the call. If it is not a thumb
4582 target, we insert glue. */
4583 if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC
4584 && !(globals->use_blx && r_type == R_ARM_THM_CALL)
4585 && h->root.type != bfd_link_hash_undefweak)
4586 record_thumb_to_arm_glue (link_info, h);
4594 if (contents != NULL
4595 && elf_section_data (sec)->this_hdr.contents != contents)
4599 if (internal_relocs != NULL
4600 && elf_section_data (sec)->relocs != internal_relocs)
4601 free (internal_relocs);
4602 internal_relocs = NULL;
4608 if (contents != NULL
4609 && elf_section_data (sec)->this_hdr.contents != contents)
4611 if (internal_relocs != NULL
4612 && elf_section_data (sec)->relocs != internal_relocs)
4613 free (internal_relocs);
4620 /* Initialise maps of ARM/Thumb/data for input BFDs. */
4623 bfd_elf32_arm_init_maps (bfd *abfd)
4625 Elf_Internal_Sym *isymbuf;
4626 Elf_Internal_Shdr *hdr;
4627 unsigned int i, localsyms;
4629 if ((abfd->flags & DYNAMIC) != 0)
4632 hdr = & elf_symtab_hdr (abfd);
4633 localsyms = hdr->sh_info;
4635 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4636 should contain the number of local symbols, which should come before any
4637 global symbols. Mapping symbols are always local. */
4638 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL,
4641 /* No internal symbols read? Skip this BFD. */
4642 if (isymbuf == NULL)
4645 for (i = 0; i < localsyms; i++)
4647 Elf_Internal_Sym *isym = &isymbuf[i];
4648 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4652 && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
4654 name = bfd_elf_string_from_elf_section (abfd,
4655 hdr->sh_link, isym->st_name);
4657 if (bfd_is_arm_special_symbol_name (name,
4658 BFD_ARM_SPECIAL_SYM_TYPE_MAP))
4659 elf32_arm_section_map_add (sec, name[1], isym->st_value);
4666 bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info)
4668 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
4669 obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd);
4671 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
4672 if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7)
4674 switch (globals->vfp11_fix)
4676 case BFD_ARM_VFP11_FIX_DEFAULT:
4677 case BFD_ARM_VFP11_FIX_NONE:
4678 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
4682 /* Give a warning, but do as the user requests anyway. */
4683 (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum "
4684 "workaround is not necessary for target architecture"), obfd);
4687 else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT)
4688 /* For earlier architectures, we might need the workaround, but do not
4689 enable it by default. If users is running with broken hardware, they
4690 must enable the erratum fix explicitly. */
4691 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
4695 enum bfd_arm_vfp11_pipe
4703 /* Return a VFP register number. This is encoded as RX:X for single-precision
4704 registers, or X:RX for double-precision registers, where RX is the group of
4705 four bits in the instruction encoding and X is the single extension bit.
4706 RX and X fields are specified using their lowest (starting) bit. The return
4709 0...31: single-precision registers s0...s31
4710 32...63: double-precision registers d0...d31.
4712 Although X should be zero for VFP11 (encoding d0...d15 only), we might
4713 encounter VFP3 instructions, so we allow the full range for DP registers. */
4716 bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx,
4720 return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32;
4722 return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1);
4725 /* Set bits in *WMASK according to a register number REG as encoded by
4726 bfd_arm_vfp11_regno(). Ignore d16-d31. */
4729 bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg)
4734 *wmask |= 3 << ((reg - 32) * 2);
4737 /* Return TRUE if WMASK overwrites anything in REGS. */
4740 bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs)
4744 for (i = 0; i < numregs; i++)
4746 unsigned int reg = regs[i];
4748 if (reg < 32 && (wmask & (1 << reg)) != 0)
4756 if ((wmask & (3 << (reg * 2))) != 0)
4763 /* In this function, we're interested in two things: finding input registers
4764 for VFP data-processing instructions, and finding the set of registers which
4765 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
4766 hold the written set, so FLDM etc. are easy to deal with (we're only
4767 interested in 32 SP registers or 16 dp registers, due to the VFP version
4768 implemented by the chip in question). DP registers are marked by setting
4769 both SP registers in the write mask). */
4771 static enum bfd_arm_vfp11_pipe
4772 bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs,
4775 enum bfd_arm_vfp11_pipe pipe = VFP11_BAD;
4776 bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0;
4778 if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
4781 unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
4782 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
4784 pqrs = ((insn & 0x00800000) >> 20)
4785 | ((insn & 0x00300000) >> 19)
4786 | ((insn & 0x00000040) >> 6);
4790 case 0: /* fmac[sd]. */
4791 case 1: /* fnmac[sd]. */
4792 case 2: /* fmsc[sd]. */
4793 case 3: /* fnmsc[sd]. */
4795 bfd_arm_vfp11_write_mask (destmask, fd);
4797 regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
4802 case 4: /* fmul[sd]. */
4803 case 5: /* fnmul[sd]. */
4804 case 6: /* fadd[sd]. */
4805 case 7: /* fsub[sd]. */
4809 case 8: /* fdiv[sd]. */
4812 bfd_arm_vfp11_write_mask (destmask, fd);
4813 regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
4818 case 15: /* extended opcode. */
4820 unsigned int extn = ((insn >> 15) & 0x1e)
4821 | ((insn >> 7) & 1);
4825 case 0: /* fcpy[sd]. */
4826 case 1: /* fabs[sd]. */
4827 case 2: /* fneg[sd]. */
4828 case 8: /* fcmp[sd]. */
4829 case 9: /* fcmpe[sd]. */
4830 case 10: /* fcmpz[sd]. */
4831 case 11: /* fcmpez[sd]. */
4832 case 16: /* fuito[sd]. */
4833 case 17: /* fsito[sd]. */
4834 case 24: /* ftoui[sd]. */
4835 case 25: /* ftouiz[sd]. */
4836 case 26: /* ftosi[sd]. */
4837 case 27: /* ftosiz[sd]. */
4838 /* These instructions will not bounce due to underflow. */
4843 case 3: /* fsqrt[sd]. */
4844 /* fsqrt cannot underflow, but it can (perhaps) overwrite
4845 registers to cause the erratum in previous instructions. */
4846 bfd_arm_vfp11_write_mask (destmask, fd);
4850 case 15: /* fcvt{ds,sd}. */
4854 bfd_arm_vfp11_write_mask (destmask, fd);
4856 /* Only FCVTSD can underflow. */
4857 if ((insn & 0x100) != 0)
4876 /* Two-register transfer. */
4877 else if ((insn & 0x0fe00ed0) == 0x0c400a10)
4879 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
4881 if ((insn & 0x100000) == 0)
4884 bfd_arm_vfp11_write_mask (destmask, fm);
4887 bfd_arm_vfp11_write_mask (destmask, fm);
4888 bfd_arm_vfp11_write_mask (destmask, fm + 1);
4894 else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */
4896 int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
4897 unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1);
4901 case 0: /* Two-reg transfer. We should catch these above. */
4904 case 2: /* fldm[sdx]. */
4908 unsigned int i, offset = insn & 0xff;
4913 for (i = fd; i < fd + offset; i++)
4914 bfd_arm_vfp11_write_mask (destmask, i);
4918 case 4: /* fld[sd]. */
4920 bfd_arm_vfp11_write_mask (destmask, fd);
4929 /* Single-register transfer. Note L==0. */
4930 else if ((insn & 0x0f100e10) == 0x0e000a10)
4932 unsigned int opcode = (insn >> 21) & 7;
4933 unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7);
4937 case 0: /* fmsr/fmdlr. */
4938 case 1: /* fmdhr. */
4939 /* Mark fmdhr and fmdlr as writing to the whole of the DP
4940 destination register. I don't know if this is exactly right,
4941 but it is the conservative choice. */
4942 bfd_arm_vfp11_write_mask (destmask, fn);
4956 static int elf32_arm_compare_mapping (const void * a, const void * b);
4959 /* Look for potentially-troublesome code sequences which might trigger the
4960 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
4961 (available from ARM) for details of the erratum. A short version is
4962 described in ld.texinfo. */
4965 bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info)
4968 bfd_byte *contents = NULL;
4970 int regs[3], numregs = 0;
4971 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
4972 int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR);
4974 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
4975 The states transition as follows:
4977 0 -> 1 (vector) or 0 -> 2 (scalar)
4978 A VFP FMAC-pipeline instruction has been seen. Fill
4979 regs[0]..regs[numregs-1] with its input operands. Remember this
4980 instruction in 'first_fmac'.
4983 Any instruction, except for a VFP instruction which overwrites
4988 A VFP instruction has been seen which overwrites any of regs[*].
4989 We must make a veneer! Reset state to 0 before examining next
4993 If we fail to match anything in state 2, reset to state 0 and reset
4994 the instruction pointer to the instruction after 'first_fmac'.
4996 If the VFP11 vector mode is in use, there must be at least two unrelated
4997 instructions between anti-dependent VFP11 instructions to properly avoid
4998 triggering the erratum, hence the use of the extra state 1. */
5000 /* If we are only performing a partial link do not bother
5001 to construct any glue. */
5002 if (link_info->relocatable)
5005 /* Skip if this bfd does not correspond to an ELF image. */
5006 if (! is_arm_elf (abfd))
5009 /* We should have chosen a fix type by the time we get here. */
5010 BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT);
5012 if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE)
5015 for (sec = abfd->sections; sec != NULL; sec = sec->next)
5017 unsigned int i, span, first_fmac = 0, veneer_of_insn = 0;
5018 struct _arm_elf_section_data *sec_data;
5020 /* If we don't have executable progbits, we're not interested in this
5021 section. Also skip if section is to be excluded. */
5022 if (elf_section_type (sec) != SHT_PROGBITS
5023 || (elf_section_flags (sec) & SHF_EXECINSTR) == 0
5024 || (sec->flags & SEC_EXCLUDE) != 0
5025 || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0)
5028 sec_data = elf32_arm_section_data (sec);
5030 if (sec_data->mapcount == 0)
5033 if (elf_section_data (sec)->this_hdr.contents != NULL)
5034 contents = elf_section_data (sec)->this_hdr.contents;
5035 else if (! bfd_malloc_and_get_section (abfd, sec, &contents))
5038 qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map),
5039 elf32_arm_compare_mapping);
5041 for (span = 0; span < sec_data->mapcount; span++)
5043 unsigned int span_start = sec_data->map[span].vma;
5044 unsigned int span_end = (span == sec_data->mapcount - 1)
5045 ? sec->size : sec_data->map[span + 1].vma;
5046 char span_type = sec_data->map[span].type;
5048 /* FIXME: Only ARM mode is supported at present. We may need to
5049 support Thumb-2 mode also at some point. */
5050 if (span_type != 'a')
5053 for (i = span_start; i < span_end;)
5055 unsigned int next_i = i + 4;
5056 unsigned int insn = bfd_big_endian (abfd)
5057 ? (contents[i] << 24)
5058 | (contents[i + 1] << 16)
5059 | (contents[i + 2] << 8)
5061 : (contents[i + 3] << 24)
5062 | (contents[i + 2] << 16)
5063 | (contents[i + 1] << 8)
5065 unsigned int writemask = 0;
5066 enum bfd_arm_vfp11_pipe pipe;
5071 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs,
5073 /* I'm assuming the VFP11 erratum can trigger with denorm
5074 operands on either the FMAC or the DS pipeline. This might
5075 lead to slightly overenthusiastic veneer insertion. */
5076 if (pipe == VFP11_FMAC || pipe == VFP11_DS)
5078 state = use_vector ? 1 : 2;
5080 veneer_of_insn = insn;
5086 int other_regs[3], other_numregs;
5087 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
5090 if (pipe != VFP11_BAD
5091 && bfd_arm_vfp11_antidependency (writemask, regs,
5101 int other_regs[3], other_numregs;
5102 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
5105 if (pipe != VFP11_BAD
5106 && bfd_arm_vfp11_antidependency (writemask, regs,
5112 next_i = first_fmac + 4;
5118 abort (); /* Should be unreachable. */
5123 elf32_vfp11_erratum_list *newerr
5124 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
5127 errcount = ++(elf32_arm_section_data (sec)->erratumcount);
5129 newerr->u.b.vfp_insn = veneer_of_insn;
5134 newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER;
5141 record_vfp11_erratum_veneer (link_info, newerr, abfd, sec,
5146 newerr->next = sec_data->erratumlist;
5147 sec_data->erratumlist = newerr;
5156 if (contents != NULL
5157 && elf_section_data (sec)->this_hdr.contents != contents)
5165 if (contents != NULL
5166 && elf_section_data (sec)->this_hdr.contents != contents)
5172 /* Find virtual-memory addresses for VFP11 erratum veneers and return locations
5173 after sections have been laid out, using specially-named symbols. */
5176 bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd,
5177 struct bfd_link_info *link_info)
5180 struct elf32_arm_link_hash_table *globals;
5183 if (link_info->relocatable)
5186 /* Skip if this bfd does not correspond to an ELF image. */
5187 if (! is_arm_elf (abfd))
5190 globals = elf32_arm_hash_table (link_info);
5192 tmp_name = bfd_malloc ((bfd_size_type) strlen
5193 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
5195 for (sec = abfd->sections; sec != NULL; sec = sec->next)
5197 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
5198 elf32_vfp11_erratum_list *errnode = sec_data->erratumlist;
5200 for (; errnode != NULL; errnode = errnode->next)
5202 struct elf_link_hash_entry *myh;
5205 switch (errnode->type)
5207 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
5208 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER:
5209 /* Find veneer symbol. */
5210 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
5211 errnode->u.b.veneer->u.v.id);
5213 myh = elf_link_hash_lookup
5214 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
5217 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
5218 "`%s'"), abfd, tmp_name);
5220 vma = myh->root.u.def.section->output_section->vma
5221 + myh->root.u.def.section->output_offset
5222 + myh->root.u.def.value;
5224 errnode->u.b.veneer->vma = vma;
5227 case VFP11_ERRATUM_ARM_VENEER:
5228 case VFP11_ERRATUM_THUMB_VENEER:
5229 /* Find return location. */
5230 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
5233 myh = elf_link_hash_lookup
5234 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
5237 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
5238 "`%s'"), abfd, tmp_name);
5240 vma = myh->root.u.def.section->output_section->vma
5241 + myh->root.u.def.section->output_offset
5242 + myh->root.u.def.value;
5244 errnode->u.v.branch->vma = vma;
5257 /* Set target relocation values needed during linking. */
5260 bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd,
5261 struct bfd_link_info *link_info,
5263 char * target2_type,
5266 bfd_arm_vfp11_fix vfp11_fix,
5267 int no_enum_warn, int pic_veneer)
5269 struct elf32_arm_link_hash_table *globals;
5271 globals = elf32_arm_hash_table (link_info);
5273 globals->target1_is_rel = target1_is_rel;
5274 if (strcmp (target2_type, "rel") == 0)
5275 globals->target2_reloc = R_ARM_REL32;
5276 else if (strcmp (target2_type, "abs") == 0)
5277 globals->target2_reloc = R_ARM_ABS32;
5278 else if (strcmp (target2_type, "got-rel") == 0)
5279 globals->target2_reloc = R_ARM_GOT_PREL;
5282 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
5285 globals->fix_v4bx = fix_v4bx;
5286 globals->use_blx |= use_blx;
5287 globals->vfp11_fix = vfp11_fix;
5288 globals->pic_veneer = pic_veneer;
5290 BFD_ASSERT (is_arm_elf (output_bfd));
5291 elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
5294 /* Replace the target offset of a Thumb bl or b.w instruction. */
5297 insert_thumb_branch (bfd *abfd, long int offset, bfd_byte *insn)
5303 BFD_ASSERT ((offset & 1) == 0);
5305 upper = bfd_get_16 (abfd, insn);
5306 lower = bfd_get_16 (abfd, insn + 2);
5307 reloc_sign = (offset < 0) ? 1 : 0;
5308 upper = (upper & ~(bfd_vma) 0x7ff)
5309 | ((offset >> 12) & 0x3ff)
5310 | (reloc_sign << 10);
5311 lower = (lower & ~(bfd_vma) 0x2fff)
5312 | (((!((offset >> 23) & 1)) ^ reloc_sign) << 13)
5313 | (((!((offset >> 22) & 1)) ^ reloc_sign) << 11)
5314 | ((offset >> 1) & 0x7ff);
5315 bfd_put_16 (abfd, upper, insn);
5316 bfd_put_16 (abfd, lower, insn + 2);
5319 /* Thumb code calling an ARM function. */
5322 elf32_thumb_to_arm_stub (struct bfd_link_info * info,
5326 asection * input_section,
5327 bfd_byte * hit_data,
5330 bfd_signed_vma addend,
5332 char **error_message)
5336 long int ret_offset;
5337 struct elf_link_hash_entry * myh;
5338 struct elf32_arm_link_hash_table * globals;
5340 myh = find_thumb_glue (info, name, error_message);
5344 globals = elf32_arm_hash_table (info);
5346 BFD_ASSERT (globals != NULL);
5347 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5349 my_offset = myh->root.u.def.value;
5351 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5352 THUMB2ARM_GLUE_SECTION_NAME);
5354 BFD_ASSERT (s != NULL);
5355 BFD_ASSERT (s->contents != NULL);
5356 BFD_ASSERT (s->output_section != NULL);
5358 if ((my_offset & 0x01) == 0x01)
5361 && sym_sec->owner != NULL
5362 && !INTERWORK_FLAG (sym_sec->owner))
5364 (*_bfd_error_handler)
5365 (_("%B(%s): warning: interworking not enabled.\n"
5366 " first occurrence: %B: thumb call to arm"),
5367 sym_sec->owner, input_bfd, name);
5373 myh->root.u.def.value = my_offset;
5375 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn,
5376 s->contents + my_offset);
5378 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn,
5379 s->contents + my_offset + 2);
5382 /* Address of destination of the stub. */
5383 ((bfd_signed_vma) val)
5385 /* Offset from the start of the current section
5386 to the start of the stubs. */
5388 /* Offset of the start of this stub from the start of the stubs. */
5390 /* Address of the start of the current section. */
5391 + s->output_section->vma)
5392 /* The branch instruction is 4 bytes into the stub. */
5394 /* ARM branches work from the pc of the instruction + 8. */
5397 put_arm_insn (globals, output_bfd,
5398 (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
5399 s->contents + my_offset + 4);
5402 BFD_ASSERT (my_offset <= globals->thumb_glue_size);
5404 /* Now go back and fix up the original BL insn to point to here. */
5406 /* Address of where the stub is located. */
5407 (s->output_section->vma + s->output_offset + my_offset)
5408 /* Address of where the BL is located. */
5409 - (input_section->output_section->vma + input_section->output_offset
5411 /* Addend in the relocation. */
5413 /* Biassing for PC-relative addressing. */
5416 insert_thumb_branch (input_bfd, ret_offset, hit_data - input_section->vma);
5421 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
5423 static struct elf_link_hash_entry *
5424 elf32_arm_create_thumb_stub (struct bfd_link_info * info,
5431 char **error_message)
5434 long int ret_offset;
5435 struct elf_link_hash_entry * myh;
5436 struct elf32_arm_link_hash_table * globals;
5438 myh = find_arm_glue (info, name, error_message);
5442 globals = elf32_arm_hash_table (info);
5444 BFD_ASSERT (globals != NULL);
5445 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5447 my_offset = myh->root.u.def.value;
5449 if ((my_offset & 0x01) == 0x01)
5452 && sym_sec->owner != NULL
5453 && !INTERWORK_FLAG (sym_sec->owner))
5455 (*_bfd_error_handler)
5456 (_("%B(%s): warning: interworking not enabled.\n"
5457 " first occurrence: %B: arm call to thumb"),
5458 sym_sec->owner, input_bfd, name);
5462 myh->root.u.def.value = my_offset;
5464 if (info->shared || globals->root.is_relocatable_executable
5465 || globals->pic_veneer)
5467 /* For relocatable objects we can't use absolute addresses,
5468 so construct the address from a relative offset. */
5469 /* TODO: If the offset is small it's probably worth
5470 constructing the address with adds. */
5471 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn,
5472 s->contents + my_offset);
5473 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn,
5474 s->contents + my_offset + 4);
5475 put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
5476 s->contents + my_offset + 8);
5477 /* Adjust the offset by 4 for the position of the add,
5478 and 8 for the pipeline offset. */
5479 ret_offset = (val - (s->output_offset
5480 + s->output_section->vma
5483 bfd_put_32 (output_bfd, ret_offset,
5484 s->contents + my_offset + 12);
5486 else if (globals->use_blx)
5488 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn,
5489 s->contents + my_offset);
5491 /* It's a thumb address. Add the low order bit. */
5492 bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn,
5493 s->contents + my_offset + 4);
5497 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn,
5498 s->contents + my_offset);
5500 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn,
5501 s->contents + my_offset + 4);
5503 /* It's a thumb address. Add the low order bit. */
5504 bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
5505 s->contents + my_offset + 8);
5509 BFD_ASSERT (my_offset <= globals->arm_glue_size);
5514 /* Arm code calling a Thumb function. */
5517 elf32_arm_to_thumb_stub (struct bfd_link_info * info,
5521 asection * input_section,
5522 bfd_byte * hit_data,
5525 bfd_signed_vma addend,
5527 char **error_message)
5529 unsigned long int tmp;
5532 long int ret_offset;
5533 struct elf_link_hash_entry * myh;
5534 struct elf32_arm_link_hash_table * globals;
5536 globals = elf32_arm_hash_table (info);
5538 BFD_ASSERT (globals != NULL);
5539 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5541 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5542 ARM2THUMB_GLUE_SECTION_NAME);
5543 BFD_ASSERT (s != NULL);
5544 BFD_ASSERT (s->contents != NULL);
5545 BFD_ASSERT (s->output_section != NULL);
5547 myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd,
5548 sym_sec, val, s, error_message);
5552 my_offset = myh->root.u.def.value;
5553 tmp = bfd_get_32 (input_bfd, hit_data);
5554 tmp = tmp & 0xFF000000;
5556 /* Somehow these are both 4 too far, so subtract 8. */
5557 ret_offset = (s->output_offset
5559 + s->output_section->vma
5560 - (input_section->output_offset
5561 + input_section->output_section->vma
5565 tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
5567 bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
5572 /* Populate Arm stub for an exported Thumb function. */
5575 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf)
5577 struct bfd_link_info * info = (struct bfd_link_info *) inf;
5579 struct elf_link_hash_entry * myh;
5580 struct elf32_arm_link_hash_entry *eh;
5581 struct elf32_arm_link_hash_table * globals;
5584 char *error_message;
5586 eh = elf32_arm_hash_entry (h);
5587 /* Allocate stubs for exported Thumb functions on v4t. */
5588 if (eh->export_glue == NULL)
5591 globals = elf32_arm_hash_table (info);
5593 BFD_ASSERT (globals != NULL);
5594 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5596 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5597 ARM2THUMB_GLUE_SECTION_NAME);
5598 BFD_ASSERT (s != NULL);
5599 BFD_ASSERT (s->contents != NULL);
5600 BFD_ASSERT (s->output_section != NULL);
5602 sec = eh->export_glue->root.u.def.section;
5604 BFD_ASSERT (sec->output_section != NULL);
5606 val = eh->export_glue->root.u.def.value + sec->output_offset
5607 + sec->output_section->vma;
5608 myh = elf32_arm_create_thumb_stub (info, h->root.root.string,
5609 h->root.u.def.section->owner,
5610 globals->obfd, sec, val, s,
5616 /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */
5619 elf32_arm_bx_glue (struct bfd_link_info * info, int reg)
5624 struct elf32_arm_link_hash_table *globals;
5626 globals = elf32_arm_hash_table (info);
5628 BFD_ASSERT (globals != NULL);
5629 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5631 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5632 ARM_BX_GLUE_SECTION_NAME);
5633 BFD_ASSERT (s != NULL);
5634 BFD_ASSERT (s->contents != NULL);
5635 BFD_ASSERT (s->output_section != NULL);
5637 BFD_ASSERT (globals->bx_glue_offset[reg] & 2);
5639 glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3;
5641 if ((globals->bx_glue_offset[reg] & 1) == 0)
5643 p = s->contents + glue_addr;
5644 bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p);
5645 bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4);
5646 bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8);
5647 globals->bx_glue_offset[reg] |= 1;
5650 return glue_addr + s->output_section->vma + s->output_offset;
5653 /* Generate Arm stubs for exported Thumb symbols. */
5655 elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED,
5656 struct bfd_link_info *link_info)
5658 struct elf32_arm_link_hash_table * globals;
5663 globals = elf32_arm_hash_table (link_info);
5664 /* If blx is available then exported Thumb symbols are OK and there is
5666 if (globals->use_blx)
5669 elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub,
5673 /* Some relocations map to different relocations depending on the
5674 target. Return the real relocation. */
5676 arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
5682 if (globals->target1_is_rel)
5688 return globals->target2_reloc;
5695 /* Return the base VMA address which should be subtracted from real addresses
5696 when resolving @dtpoff relocation.
5697 This is PT_TLS segment p_vaddr. */
5700 dtpoff_base (struct bfd_link_info *info)
5702 /* If tls_sec is NULL, we should have signalled an error already. */
5703 if (elf_hash_table (info)->tls_sec == NULL)
5705 return elf_hash_table (info)->tls_sec->vma;
5708 /* Return the relocation value for @tpoff relocation
5709 if STT_TLS virtual address is ADDRESS. */
5712 tpoff (struct bfd_link_info *info, bfd_vma address)
5714 struct elf_link_hash_table *htab = elf_hash_table (info);
5717 /* If tls_sec is NULL, we should have signalled an error already. */
5718 if (htab->tls_sec == NULL)
5720 base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
5721 return address - htab->tls_sec->vma + base;
5724 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
5725 VALUE is the relocation value. */
5727 static bfd_reloc_status_type
5728 elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value)
5731 return bfd_reloc_overflow;
5733 value |= bfd_get_32 (abfd, data) & 0xfffff000;
5734 bfd_put_32 (abfd, value, data);
5735 return bfd_reloc_ok;
5738 /* For a given value of n, calculate the value of G_n as required to
5739 deal with group relocations. We return it in the form of an
5740 encoded constant-and-rotation, together with the final residual. If n is
5741 specified as less than zero, then final_residual is filled with the
5742 input value and no further action is performed. */
5745 calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual)
5749 bfd_vma encoded_g_n = 0;
5750 bfd_vma residual = value; /* Also known as Y_n. */
5752 for (current_n = 0; current_n <= n; current_n++)
5756 /* Calculate which part of the value to mask. */
5763 /* Determine the most significant bit in the residual and
5764 align the resulting value to a 2-bit boundary. */
5765 for (msb = 30; msb >= 0; msb -= 2)
5766 if (residual & (3 << msb))
5769 /* The desired shift is now (msb - 6), or zero, whichever
5776 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
5777 g_n = residual & (0xff << shift);
5778 encoded_g_n = (g_n >> shift)
5779 | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8);
5781 /* Calculate the residual for the next time around. */
5785 *final_residual = residual;
5790 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
5791 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
5794 identify_add_or_sub (bfd_vma insn)
5796 int opcode = insn & 0x1e00000;
5798 if (opcode == 1 << 23) /* ADD */
5801 if (opcode == 1 << 22) /* SUB */
5807 /* Perform a relocation as part of a final link. */
5809 static bfd_reloc_status_type
5810 elf32_arm_final_link_relocate (reloc_howto_type * howto,
5813 asection * input_section,
5814 bfd_byte * contents,
5815 Elf_Internal_Rela * rel,
5817 struct bfd_link_info * info,
5819 const char * sym_name,
5821 struct elf_link_hash_entry * h,
5822 bfd_boolean * unresolved_reloc_p,
5823 char **error_message)
5825 unsigned long r_type = howto->type;
5826 unsigned long r_symndx;
5827 bfd_byte * hit_data = contents + rel->r_offset;
5828 bfd * dynobj = NULL;
5829 Elf_Internal_Shdr * symtab_hdr;
5830 struct elf_link_hash_entry ** sym_hashes;
5831 bfd_vma * local_got_offsets;
5832 asection * sgot = NULL;
5833 asection * splt = NULL;
5834 asection * sreloc = NULL;
5836 bfd_signed_vma signed_addend;
5837 struct elf32_arm_link_hash_table * globals;
5839 globals = elf32_arm_hash_table (info);
5841 BFD_ASSERT (is_arm_elf (input_bfd));
5843 /* Some relocation types map to different relocations depending on the
5844 target. We pick the right one here. */
5845 r_type = arm_real_reloc_type (globals, r_type);
5846 if (r_type != howto->type)
5847 howto = elf32_arm_howto_from_type (r_type);
5849 /* If the start address has been set, then set the EF_ARM_HASENTRY
5850 flag. Setting this more than once is redundant, but the cost is
5851 not too high, and it keeps the code simple.
5853 The test is done here, rather than somewhere else, because the
5854 start address is only set just before the final link commences.
5856 Note - if the user deliberately sets a start address of 0, the
5857 flag will not be set. */
5858 if (bfd_get_start_address (output_bfd) != 0)
5859 elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
5861 dynobj = elf_hash_table (info)->dynobj;
5864 sgot = bfd_get_section_by_name (dynobj, ".got");
5865 splt = bfd_get_section_by_name (dynobj, ".plt");
5867 symtab_hdr = & elf_symtab_hdr (input_bfd);
5868 sym_hashes = elf_sym_hashes (input_bfd);
5869 local_got_offsets = elf_local_got_offsets (input_bfd);
5870 r_symndx = ELF32_R_SYM (rel->r_info);
5872 if (globals->use_rel)
5874 addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
5876 if (addend & ((howto->src_mask + 1) >> 1))
5879 signed_addend &= ~ howto->src_mask;
5880 signed_addend |= addend;
5883 signed_addend = addend;
5886 addend = signed_addend = rel->r_addend;
5891 /* We don't need to find a value for this symbol. It's just a
5893 *unresolved_reloc_p = FALSE;
5894 return bfd_reloc_ok;
5897 if (!globals->vxworks_p)
5898 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
5902 case R_ARM_ABS32_NOI:
5904 case R_ARM_REL32_NOI:
5910 /* Handle relocations which should use the PLT entry. ABS32/REL32
5911 will use the symbol's value, which may point to a PLT entry, but we
5912 don't need to handle that here. If we created a PLT entry, all
5913 branches in this object should go to it. */
5914 if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32
5915 && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI)
5918 && h->plt.offset != (bfd_vma) -1)
5920 /* If we've created a .plt section, and assigned a PLT entry to
5921 this function, it should not be known to bind locally. If
5922 it were, we would have cleared the PLT entry. */
5923 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
5925 value = (splt->output_section->vma
5926 + splt->output_offset
5928 *unresolved_reloc_p = FALSE;
5929 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5930 contents, rel->r_offset, value,
5934 /* When generating a shared object or relocatable executable, these
5935 relocations are copied into the output file to be resolved at
5937 if ((info->shared || globals->root.is_relocatable_executable)
5938 && (input_section->flags & SEC_ALLOC)
5939 && !(elf32_arm_hash_table (info)->vxworks_p
5940 && strcmp (input_section->output_section->name,
5942 && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI)
5943 || !SYMBOL_CALLS_LOCAL (info, h))
5945 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5946 || h->root.type != bfd_link_hash_undefweak)
5947 && r_type != R_ARM_PC24
5948 && r_type != R_ARM_CALL
5949 && r_type != R_ARM_JUMP24
5950 && r_type != R_ARM_PREL31
5951 && r_type != R_ARM_PLT32)
5953 Elf_Internal_Rela outrel;
5955 bfd_boolean skip, relocate;
5957 *unresolved_reloc_p = FALSE;
5963 name = (bfd_elf_string_from_elf_section
5965 elf_elfheader (input_bfd)->e_shstrndx,
5966 elf_section_data (input_section)->rel_hdr.sh_name));
5968 return bfd_reloc_notsupported;
5970 BFD_ASSERT (reloc_section_p (globals, name, input_section));
5972 sreloc = bfd_get_section_by_name (dynobj, name);
5973 BFD_ASSERT (sreloc != NULL);
5979 outrel.r_addend = addend;
5981 _bfd_elf_section_offset (output_bfd, info, input_section,
5983 if (outrel.r_offset == (bfd_vma) -1)
5985 else if (outrel.r_offset == (bfd_vma) -2)
5986 skip = TRUE, relocate = TRUE;
5987 outrel.r_offset += (input_section->output_section->vma
5988 + input_section->output_offset);
5991 memset (&outrel, 0, sizeof outrel);
5996 || !h->def_regular))
5997 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6002 /* This symbol is local, or marked to become local. */
6003 if (sym_flags == STT_ARM_TFUNC)
6005 if (globals->symbian_p)
6009 /* On Symbian OS, the data segment and text segement
6010 can be relocated independently. Therefore, we
6011 must indicate the segment to which this
6012 relocation is relative. The BPABI allows us to
6013 use any symbol in the right segment; we just use
6014 the section symbol as it is convenient. (We
6015 cannot use the symbol given by "h" directly as it
6016 will not appear in the dynamic symbol table.)
6018 Note that the dynamic linker ignores the section
6019 symbol value, so we don't subtract osec->vma
6020 from the emitted reloc addend. */
6022 osec = sym_sec->output_section;
6024 osec = input_section->output_section;
6025 symbol = elf_section_data (osec)->dynindx;
6028 struct elf_link_hash_table *htab = elf_hash_table (info);
6030 if ((osec->flags & SEC_READONLY) == 0
6031 && htab->data_index_section != NULL)
6032 osec = htab->data_index_section;
6034 osec = htab->text_index_section;
6035 symbol = elf_section_data (osec)->dynindx;
6037 BFD_ASSERT (symbol != 0);
6040 /* On SVR4-ish systems, the dynamic loader cannot
6041 relocate the text and data segments independently,
6042 so the symbol does not matter. */
6044 outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
6045 if (globals->use_rel)
6048 outrel.r_addend += value;
6051 loc = sreloc->contents;
6052 loc += sreloc->reloc_count++ * RELOC_SIZE (globals);
6053 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
6055 /* If this reloc is against an external symbol, we do not want to
6056 fiddle with the addend. Otherwise, we need to include the symbol
6057 value so that it becomes an addend for the dynamic reloc. */
6059 return bfd_reloc_ok;
6061 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6062 contents, rel->r_offset, value,
6065 else switch (r_type)
6068 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
6070 case R_ARM_XPC25: /* Arm BLX instruction. */
6073 case R_ARM_PC24: /* Arm B/BL instruction */
6077 bfd_signed_vma branch_offset;
6078 struct elf32_arm_stub_hash_entry *stub_entry = NULL;
6080 from = (input_section->output_section->vma
6081 + input_section->output_offset
6083 branch_offset = (bfd_signed_vma)(value - from);
6085 if (r_type == R_ARM_XPC25)
6087 /* Check for Arm calling Arm function. */
6088 /* FIXME: Should we translate the instruction into a BL
6089 instruction instead ? */
6090 if (sym_flags != STT_ARM_TFUNC)
6091 (*_bfd_error_handler)
6092 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
6094 h ? h->root.root.string : "(local)");
6096 else if (r_type != R_ARM_CALL)
6098 /* Check for Arm calling Thumb function. */
6099 if (sym_flags == STT_ARM_TFUNC)
6101 if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
6102 output_bfd, input_section,
6103 hit_data, sym_sec, rel->r_offset,
6104 signed_addend, value,
6106 return bfd_reloc_ok;
6108 return bfd_reloc_dangerous;
6112 /* Check if a stub has to be inserted because the
6113 destination is too far or we are changing mode */
6114 if (r_type == R_ARM_CALL)
6116 if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET
6117 || branch_offset < ARM_MAX_BWD_BRANCH_OFFSET
6118 || sym_flags == STT_ARM_TFUNC)
6120 /* The target is out of reach, so redirect the
6121 branch to the local stub for this function. */
6123 stub_entry = elf32_arm_get_stub_entry (input_section,
6126 if (stub_entry != NULL)
6127 value = (stub_entry->stub_offset
6128 + stub_entry->stub_sec->output_offset
6129 + stub_entry->stub_sec->output_section->vma);
6133 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
6135 S is the address of the symbol in the relocation.
6136 P is address of the instruction being relocated.
6137 A is the addend (extracted from the instruction) in bytes.
6139 S is held in 'value'.
6140 P is the base address of the section containing the
6141 instruction plus the offset of the reloc into that
6143 (input_section->output_section->vma +
6144 input_section->output_offset +
6146 A is the addend, converted into bytes, ie:
6149 Note: None of these operations have knowledge of the pipeline
6150 size of the processor, thus it is up to the assembler to
6151 encode this information into the addend. */
6152 value -= (input_section->output_section->vma
6153 + input_section->output_offset);
6154 value -= rel->r_offset;
6155 if (globals->use_rel)
6156 value += (signed_addend << howto->size);
6158 /* RELA addends do not have to be adjusted by howto->size. */
6159 value += signed_addend;
6161 signed_addend = value;
6162 signed_addend >>= howto->rightshift;
6164 /* A branch to an undefined weak symbol is turned into a jump to
6165 the next instruction. */
6166 if (h && h->root.type == bfd_link_hash_undefweak)
6168 value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000)
6173 /* Perform a signed range check. */
6174 if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
6175 || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
6176 return bfd_reloc_overflow;
6178 addend = (value & 2);
6180 value = (signed_addend & howto->dst_mask)
6181 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
6183 /* Set the H bit in the BLX instruction. */
6184 if (sym_flags == STT_ARM_TFUNC)
6189 value &= ~(bfd_vma)(1 << 24);
6191 if (r_type == R_ARM_CALL)
6193 /* Select the correct instruction (BL or BLX). */
6194 /* Only if we are not handling a BL to a stub. In this
6195 case, mode switching is performed by the stub. */
6196 if (sym_flags == STT_ARM_TFUNC && !stub_entry)
6200 value &= ~(bfd_vma)(1 << 28);
6210 if (sym_flags == STT_ARM_TFUNC)
6214 case R_ARM_ABS32_NOI:
6220 if (sym_flags == STT_ARM_TFUNC)
6222 value -= (input_section->output_section->vma
6223 + input_section->output_offset + rel->r_offset);
6226 case R_ARM_REL32_NOI:
6228 value -= (input_section->output_section->vma
6229 + input_section->output_offset + rel->r_offset);
6233 value -= (input_section->output_section->vma
6234 + input_section->output_offset + rel->r_offset);
6235 value += signed_addend;
6236 if (! h || h->root.type != bfd_link_hash_undefweak)
6238 /* Check for overflow */
6239 if ((value ^ (value >> 1)) & (1 << 30))
6240 return bfd_reloc_overflow;
6242 value &= 0x7fffffff;
6243 value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
6244 if (sym_flags == STT_ARM_TFUNC)
6249 bfd_put_32 (input_bfd, value, hit_data);
6250 return bfd_reloc_ok;
6254 if ((long) value > 0x7f || (long) value < -0x80)
6255 return bfd_reloc_overflow;
6257 bfd_put_8 (input_bfd, value, hit_data);
6258 return bfd_reloc_ok;
6263 if ((long) value > 0x7fff || (long) value < -0x8000)
6264 return bfd_reloc_overflow;
6266 bfd_put_16 (input_bfd, value, hit_data);
6267 return bfd_reloc_ok;
6269 case R_ARM_THM_ABS5:
6270 /* Support ldr and str instructions for the thumb. */
6271 if (globals->use_rel)
6273 /* Need to refetch addend. */
6274 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
6275 /* ??? Need to determine shift amount from operand size. */
6276 addend >>= howto->rightshift;
6280 /* ??? Isn't value unsigned? */
6281 if ((long) value > 0x1f || (long) value < -0x10)
6282 return bfd_reloc_overflow;
6284 /* ??? Value needs to be properly shifted into place first. */
6285 value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
6286 bfd_put_16 (input_bfd, value, hit_data);
6287 return bfd_reloc_ok;
6289 case R_ARM_THM_ALU_PREL_11_0:
6290 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
6293 bfd_signed_vma relocation;
6295 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
6296 | bfd_get_16 (input_bfd, hit_data + 2);
6298 if (globals->use_rel)
6300 signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4)
6301 | ((insn & (1 << 26)) >> 15);
6302 if (insn & 0xf00000)
6303 signed_addend = -signed_addend;
6306 relocation = value + signed_addend;
6307 relocation -= (input_section->output_section->vma
6308 + input_section->output_offset
6311 value = abs (relocation);
6313 if (value >= 0x1000)
6314 return bfd_reloc_overflow;
6316 insn = (insn & 0xfb0f8f00) | (value & 0xff)
6317 | ((value & 0x700) << 4)
6318 | ((value & 0x800) << 15);
6322 bfd_put_16 (input_bfd, insn >> 16, hit_data);
6323 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
6325 return bfd_reloc_ok;
6328 case R_ARM_THM_PC12:
6329 /* Corresponds to: ldr.w reg, [pc, #offset]. */
6332 bfd_signed_vma relocation;
6334 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
6335 | bfd_get_16 (input_bfd, hit_data + 2);
6337 if (globals->use_rel)
6339 signed_addend = insn & 0xfff;
6340 if (!(insn & (1 << 23)))
6341 signed_addend = -signed_addend;
6344 relocation = value + signed_addend;
6345 relocation -= (input_section->output_section->vma
6346 + input_section->output_offset
6349 value = abs (relocation);
6351 if (value >= 0x1000)
6352 return bfd_reloc_overflow;
6354 insn = (insn & 0xff7ff000) | value;
6355 if (relocation >= 0)
6358 bfd_put_16 (input_bfd, insn >> 16, hit_data);
6359 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
6361 return bfd_reloc_ok;
6364 case R_ARM_THM_XPC22:
6365 case R_ARM_THM_CALL:
6366 case R_ARM_THM_JUMP24:
6367 /* Thumb BL (branch long instruction). */
6371 bfd_boolean overflow = FALSE;
6372 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
6373 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
6374 bfd_signed_vma reloc_signed_max;
6375 bfd_signed_vma reloc_signed_min;
6377 bfd_signed_vma signed_check;
6379 int thumb2 = using_thumb2 (globals);
6381 /* A branch to an undefined weak symbol is turned into a jump to
6382 the next instruction. */
6383 if (h && h->root.type == bfd_link_hash_undefweak)
6385 bfd_put_16 (input_bfd, 0xe000, hit_data);
6386 bfd_put_16 (input_bfd, 0xbf00, hit_data + 2);
6387 return bfd_reloc_ok;
6390 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
6391 with Thumb-1) involving the J1 and J2 bits. */
6392 if (globals->use_rel)
6394 bfd_vma s = (upper_insn & (1 << 10)) >> 10;
6395 bfd_vma upper = upper_insn & 0x3ff;
6396 bfd_vma lower = lower_insn & 0x7ff;
6397 bfd_vma j1 = (lower_insn & (1 << 13)) >> 13;
6398 bfd_vma j2 = (lower_insn & (1 << 11)) >> 11;
6399 bfd_vma i1 = j1 ^ s ? 0 : 1;
6400 bfd_vma i2 = j2 ^ s ? 0 : 1;
6402 addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1);
6404 addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24);
6406 signed_addend = addend;
6409 if (r_type == R_ARM_THM_XPC22)
6411 /* Check for Thumb to Thumb call. */
6412 /* FIXME: Should we translate the instruction into a BL
6413 instruction instead ? */
6414 if (sym_flags == STT_ARM_TFUNC)
6415 (*_bfd_error_handler)
6416 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
6418 h ? h->root.root.string : "(local)");
6422 /* If it is not a call to Thumb, assume call to Arm.
6423 If it is a call relative to a section name, then it is not a
6424 function call at all, but rather a long jump. Calls through
6425 the PLT do not require stubs. */
6426 if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION
6427 && (h == NULL || splt == NULL
6428 || h->plt.offset == (bfd_vma) -1))
6430 if (globals->use_blx && r_type == R_ARM_THM_CALL)
6432 /* Convert BL to BLX. */
6433 lower_insn = (lower_insn & ~0x1000) | 0x0800;
6435 else if (r_type != R_ARM_THM_CALL) {
6436 if (elf32_thumb_to_arm_stub
6437 (info, sym_name, input_bfd, output_bfd, input_section,
6438 hit_data, sym_sec, rel->r_offset, signed_addend, value,
6440 return bfd_reloc_ok;
6442 return bfd_reloc_dangerous;
6445 else if (sym_flags == STT_ARM_TFUNC && globals->use_blx
6446 && r_type == R_ARM_THM_CALL)
6448 /* Make sure this is a BL. */
6449 lower_insn |= 0x1800;
6453 /* Handle calls via the PLT. */
6454 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
6456 value = (splt->output_section->vma
6457 + splt->output_offset
6459 if (globals->use_blx && r_type == R_ARM_THM_CALL)
6461 /* If the Thumb BLX instruction is available, convert the
6462 BL to a BLX instruction to call the ARM-mode PLT entry. */
6463 lower_insn = (lower_insn & ~0x1000) | 0x0800;
6466 /* Target the Thumb stub before the ARM PLT entry. */
6467 value -= PLT_THUMB_STUB_SIZE;
6468 *unresolved_reloc_p = FALSE;
6471 if (r_type == R_ARM_THM_CALL)
6473 /* Check if a stub has to be inserted because the destination
6476 bfd_signed_vma branch_offset;
6477 struct elf32_arm_stub_hash_entry *stub_entry = NULL;
6479 from = (input_section->output_section->vma
6480 + input_section->output_offset
6482 branch_offset = (bfd_signed_vma)(value - from);
6485 && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET
6486 || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET)))
6489 && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET
6490 || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))
6491 || ((sym_flags != STT_ARM_TFUNC) && !globals->use_blx))
6493 /* The target is out of reach or we are changing modes, so
6494 redirect the branch to the local stub for this
6496 stub_entry = elf32_arm_get_stub_entry (input_section,
6499 if (stub_entry != NULL)
6500 value = (stub_entry->stub_offset
6501 + stub_entry->stub_sec->output_offset
6502 + stub_entry->stub_sec->output_section->vma);
6504 /* If this call becomes a call to Arm, force BLX. */
6505 if (globals->use_blx)
6508 && !arm_stub_is_thumb (stub_entry->stub_type))
6509 || (sym_flags != STT_ARM_TFUNC))
6510 lower_insn = (lower_insn & ~0x1000) | 0x0800;
6515 relocation = value + signed_addend;
6517 relocation -= (input_section->output_section->vma
6518 + input_section->output_offset
6521 check = relocation >> howto->rightshift;
6523 /* If this is a signed value, the rightshift just dropped
6524 leading 1 bits (assuming twos complement). */
6525 if ((bfd_signed_vma) relocation >= 0)
6526 signed_check = check;
6528 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
6530 /* Calculate the permissable maximum and minimum values for
6531 this relocation according to whether we're relocating for
6533 bitsize = howto->bitsize;
6536 reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift;
6537 reloc_signed_min = ~reloc_signed_max;
6539 /* Assumes two's complement. */
6540 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
6543 if ((lower_insn & 0x5000) == 0x4000)
6544 /* For a BLX instruction, make sure that the relocation is rounded up
6545 to a word boundary. This follows the semantics of the instruction
6546 which specifies that bit 1 of the target address will come from bit
6547 1 of the base address. */
6548 relocation = (relocation + 2) & ~ 3;
6550 /* Put RELOCATION back into the insn. Assumes two's complement.
6551 We use the Thumb-2 encoding, which is safe even if dealing with
6552 a Thumb-1 instruction by virtue of our overflow check above. */
6553 reloc_sign = (signed_check < 0) ? 1 : 0;
6554 upper_insn = (upper_insn & ~(bfd_vma) 0x7ff)
6555 | ((relocation >> 12) & 0x3ff)
6556 | (reloc_sign << 10);
6557 lower_insn = (lower_insn & ~(bfd_vma) 0x2fff)
6558 | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13)
6559 | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11)
6560 | ((relocation >> 1) & 0x7ff);
6562 /* Put the relocated value back in the object file: */
6563 bfd_put_16 (input_bfd, upper_insn, hit_data);
6564 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
6566 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
6570 case R_ARM_THM_JUMP19:
6571 /* Thumb32 conditional branch instruction. */
6574 bfd_boolean overflow = FALSE;
6575 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
6576 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
6577 bfd_signed_vma reloc_signed_max = 0xffffe;
6578 bfd_signed_vma reloc_signed_min = -0x100000;
6579 bfd_signed_vma signed_check;
6581 /* Need to refetch the addend, reconstruct the top three bits,
6582 and squish the two 11 bit pieces together. */
6583 if (globals->use_rel)
6585 bfd_vma S = (upper_insn & 0x0400) >> 10;
6586 bfd_vma upper = (upper_insn & 0x003f);
6587 bfd_vma J1 = (lower_insn & 0x2000) >> 13;
6588 bfd_vma J2 = (lower_insn & 0x0800) >> 11;
6589 bfd_vma lower = (lower_insn & 0x07ff);
6594 upper -= 0x0100; /* Sign extend. */
6596 addend = (upper << 12) | (lower << 1);
6597 signed_addend = addend;
6600 /* Handle calls via the PLT. */
6601 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
6603 value = (splt->output_section->vma
6604 + splt->output_offset
6606 /* Target the Thumb stub before the ARM PLT entry. */
6607 value -= PLT_THUMB_STUB_SIZE;
6608 *unresolved_reloc_p = FALSE;
6611 /* ??? Should handle interworking? GCC might someday try to
6612 use this for tail calls. */
6614 relocation = value + signed_addend;
6615 relocation -= (input_section->output_section->vma
6616 + input_section->output_offset
6618 signed_check = (bfd_signed_vma) relocation;
6620 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
6623 /* Put RELOCATION back into the insn. */
6625 bfd_vma S = (relocation & 0x00100000) >> 20;
6626 bfd_vma J2 = (relocation & 0x00080000) >> 19;
6627 bfd_vma J1 = (relocation & 0x00040000) >> 18;
6628 bfd_vma hi = (relocation & 0x0003f000) >> 12;
6629 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
6631 upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi;
6632 lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
6635 /* Put the relocated value back in the object file: */
6636 bfd_put_16 (input_bfd, upper_insn, hit_data);
6637 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
6639 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
6642 case R_ARM_THM_JUMP11:
6643 case R_ARM_THM_JUMP8:
6644 case R_ARM_THM_JUMP6:
6645 /* Thumb B (branch) instruction). */
6647 bfd_signed_vma relocation;
6648 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
6649 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
6650 bfd_signed_vma signed_check;
6652 /* CZB cannot jump backward. */
6653 if (r_type == R_ARM_THM_JUMP6)
6654 reloc_signed_min = 0;
6656 if (globals->use_rel)
6658 /* Need to refetch addend. */
6659 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
6660 if (addend & ((howto->src_mask + 1) >> 1))
6663 signed_addend &= ~ howto->src_mask;
6664 signed_addend |= addend;
6667 signed_addend = addend;
6668 /* The value in the insn has been right shifted. We need to
6669 undo this, so that we can perform the address calculation
6670 in terms of bytes. */
6671 signed_addend <<= howto->rightshift;
6673 relocation = value + signed_addend;
6675 relocation -= (input_section->output_section->vma
6676 + input_section->output_offset
6679 relocation >>= howto->rightshift;
6680 signed_check = relocation;
6682 if (r_type == R_ARM_THM_JUMP6)
6683 relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
6685 relocation &= howto->dst_mask;
6686 relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
6688 bfd_put_16 (input_bfd, relocation, hit_data);
6690 /* Assumes two's complement. */
6691 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
6692 return bfd_reloc_overflow;
6694 return bfd_reloc_ok;
6697 case R_ARM_ALU_PCREL7_0:
6698 case R_ARM_ALU_PCREL15_8:
6699 case R_ARM_ALU_PCREL23_15:
6704 insn = bfd_get_32 (input_bfd, hit_data);
6705 if (globals->use_rel)
6707 /* Extract the addend. */
6708 addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
6709 signed_addend = addend;
6711 relocation = value + signed_addend;
6713 relocation -= (input_section->output_section->vma
6714 + input_section->output_offset
6716 insn = (insn & ~0xfff)
6717 | ((howto->bitpos << 7) & 0xf00)
6718 | ((relocation >> howto->bitpos) & 0xff);
6719 bfd_put_32 (input_bfd, value, hit_data);
6721 return bfd_reloc_ok;
6723 case R_ARM_GNU_VTINHERIT:
6724 case R_ARM_GNU_VTENTRY:
6725 return bfd_reloc_ok;
6727 case R_ARM_GOTOFF32:
6728 /* Relocation is relative to the start of the
6729 global offset table. */
6731 BFD_ASSERT (sgot != NULL);
6733 return bfd_reloc_notsupported;
6735 /* If we are addressing a Thumb function, we need to adjust the
6736 address by one, so that attempts to call the function pointer will
6737 correctly interpret it as Thumb code. */
6738 if (sym_flags == STT_ARM_TFUNC)
6741 /* Note that sgot->output_offset is not involved in this
6742 calculation. We always want the start of .got. If we
6743 define _GLOBAL_OFFSET_TABLE in a different way, as is
6744 permitted by the ABI, we might have to change this
6746 value -= sgot->output_section->vma;
6747 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6748 contents, rel->r_offset, value,
6752 /* Use global offset table as symbol value. */
6753 BFD_ASSERT (sgot != NULL);
6756 return bfd_reloc_notsupported;
6758 *unresolved_reloc_p = FALSE;
6759 value = sgot->output_section->vma;
6760 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6761 contents, rel->r_offset, value,
6765 case R_ARM_GOT_PREL:
6766 /* Relocation is to the entry for this symbol in the
6767 global offset table. */
6769 return bfd_reloc_notsupported;
6776 off = h->got.offset;
6777 BFD_ASSERT (off != (bfd_vma) -1);
6778 dyn = globals->root.dynamic_sections_created;
6780 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
6782 && SYMBOL_REFERENCES_LOCAL (info, h))
6783 || (ELF_ST_VISIBILITY (h->other)
6784 && h->root.type == bfd_link_hash_undefweak))
6786 /* This is actually a static link, or it is a -Bsymbolic link
6787 and the symbol is defined locally. We must initialize this
6788 entry in the global offset table. Since the offset must
6789 always be a multiple of 4, we use the least significant bit
6790 to record whether we have initialized it already.
6792 When doing a dynamic link, we create a .rel(a).got relocation
6793 entry to initialize the value. This is done in the
6794 finish_dynamic_symbol routine. */
6799 /* If we are addressing a Thumb function, we need to
6800 adjust the address by one, so that attempts to
6801 call the function pointer will correctly
6802 interpret it as Thumb code. */
6803 if (sym_flags == STT_ARM_TFUNC)
6806 bfd_put_32 (output_bfd, value, sgot->contents + off);
6811 *unresolved_reloc_p = FALSE;
6813 value = sgot->output_offset + off;
6819 BFD_ASSERT (local_got_offsets != NULL &&
6820 local_got_offsets[r_symndx] != (bfd_vma) -1);
6822 off = local_got_offsets[r_symndx];
6824 /* The offset must always be a multiple of 4. We use the
6825 least significant bit to record whether we have already
6826 generated the necessary reloc. */
6831 /* If we are addressing a Thumb function, we need to
6832 adjust the address by one, so that attempts to
6833 call the function pointer will correctly
6834 interpret it as Thumb code. */
6835 if (sym_flags == STT_ARM_TFUNC)
6838 if (globals->use_rel)
6839 bfd_put_32 (output_bfd, value, sgot->contents + off);
6844 Elf_Internal_Rela outrel;
6847 srelgot = (bfd_get_section_by_name
6848 (dynobj, RELOC_SECTION (globals, ".got")));
6849 BFD_ASSERT (srelgot != NULL);
6851 outrel.r_addend = addend + value;
6852 outrel.r_offset = (sgot->output_section->vma
6853 + sgot->output_offset
6855 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
6856 loc = srelgot->contents;
6857 loc += srelgot->reloc_count++ * RELOC_SIZE (globals);
6858 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
6861 local_got_offsets[r_symndx] |= 1;
6864 value = sgot->output_offset + off;
6866 if (r_type != R_ARM_GOT32)
6867 value += sgot->output_section->vma;
6869 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6870 contents, rel->r_offset, value,
6873 case R_ARM_TLS_LDO32:
6874 value = value - dtpoff_base (info);
6876 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6877 contents, rel->r_offset, value,
6880 case R_ARM_TLS_LDM32:
6884 if (globals->sgot == NULL)
6887 off = globals->tls_ldm_got.offset;
6893 /* If we don't know the module number, create a relocation
6897 Elf_Internal_Rela outrel;
6900 if (globals->srelgot == NULL)
6903 outrel.r_addend = 0;
6904 outrel.r_offset = (globals->sgot->output_section->vma
6905 + globals->sgot->output_offset + off);
6906 outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
6908 if (globals->use_rel)
6909 bfd_put_32 (output_bfd, outrel.r_addend,
6910 globals->sgot->contents + off);
6912 loc = globals->srelgot->contents;
6913 loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals);
6914 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
6917 bfd_put_32 (output_bfd, 1, globals->sgot->contents + off);
6919 globals->tls_ldm_got.offset |= 1;
6922 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
6923 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
6925 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6926 contents, rel->r_offset, value,
6930 case R_ARM_TLS_GD32:
6931 case R_ARM_TLS_IE32:
6937 if (globals->sgot == NULL)
6944 dyn = globals->root.dynamic_sections_created;
6945 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
6947 || !SYMBOL_REFERENCES_LOCAL (info, h)))
6949 *unresolved_reloc_p = FALSE;
6952 off = h->got.offset;
6953 tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
6957 if (local_got_offsets == NULL)
6959 off = local_got_offsets[r_symndx];
6960 tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
6963 if (tls_type == GOT_UNKNOWN)
6970 bfd_boolean need_relocs = FALSE;
6971 Elf_Internal_Rela outrel;
6972 bfd_byte *loc = NULL;
6975 /* The GOT entries have not been initialized yet. Do it
6976 now, and emit any relocations. If both an IE GOT and a
6977 GD GOT are necessary, we emit the GD first. */
6979 if ((info->shared || indx != 0)
6981 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6982 || h->root.type != bfd_link_hash_undefweak))
6985 if (globals->srelgot == NULL)
6987 loc = globals->srelgot->contents;
6988 loc += globals->srelgot->reloc_count * RELOC_SIZE (globals);
6991 if (tls_type & GOT_TLS_GD)
6995 outrel.r_addend = 0;
6996 outrel.r_offset = (globals->sgot->output_section->vma
6997 + globals->sgot->output_offset
6999 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
7001 if (globals->use_rel)
7002 bfd_put_32 (output_bfd, outrel.r_addend,
7003 globals->sgot->contents + cur_off);
7005 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
7006 globals->srelgot->reloc_count++;
7007 loc += RELOC_SIZE (globals);
7010 bfd_put_32 (output_bfd, value - dtpoff_base (info),
7011 globals->sgot->contents + cur_off + 4);
7014 outrel.r_addend = 0;
7015 outrel.r_info = ELF32_R_INFO (indx,
7016 R_ARM_TLS_DTPOFF32);
7017 outrel.r_offset += 4;
7019 if (globals->use_rel)
7020 bfd_put_32 (output_bfd, outrel.r_addend,
7021 globals->sgot->contents + cur_off + 4);
7024 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
7025 globals->srelgot->reloc_count++;
7026 loc += RELOC_SIZE (globals);
7031 /* If we are not emitting relocations for a
7032 general dynamic reference, then we must be in a
7033 static link or an executable link with the
7034 symbol binding locally. Mark it as belonging
7035 to module 1, the executable. */
7036 bfd_put_32 (output_bfd, 1,
7037 globals->sgot->contents + cur_off);
7038 bfd_put_32 (output_bfd, value - dtpoff_base (info),
7039 globals->sgot->contents + cur_off + 4);
7045 if (tls_type & GOT_TLS_IE)
7050 outrel.r_addend = value - dtpoff_base (info);
7052 outrel.r_addend = 0;
7053 outrel.r_offset = (globals->sgot->output_section->vma
7054 + globals->sgot->output_offset
7056 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
7058 if (globals->use_rel)
7059 bfd_put_32 (output_bfd, outrel.r_addend,
7060 globals->sgot->contents + cur_off);
7062 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
7063 globals->srelgot->reloc_count++;
7064 loc += RELOC_SIZE (globals);
7067 bfd_put_32 (output_bfd, tpoff (info, value),
7068 globals->sgot->contents + cur_off);
7075 local_got_offsets[r_symndx] |= 1;
7078 if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
7080 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
7081 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
7083 return _bfd_final_link_relocate (howto, input_bfd, input_section,
7084 contents, rel->r_offset, value,
7088 case R_ARM_TLS_LE32:
7091 (*_bfd_error_handler)
7092 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
7093 input_bfd, input_section,
7094 (long) rel->r_offset, howto->name);
7098 value = tpoff (info, value);
7100 return _bfd_final_link_relocate (howto, input_bfd, input_section,
7101 contents, rel->r_offset, value,
7105 if (globals->fix_v4bx)
7107 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7109 /* Ensure that we have a BX instruction. */
7110 BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
7112 if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf)
7114 /* Branch to veneer. */
7116 glue_addr = elf32_arm_bx_glue (info, insn & 0xf);
7117 glue_addr -= input_section->output_section->vma
7118 + input_section->output_offset
7119 + rel->r_offset + 8;
7120 insn = (insn & 0xf0000000) | 0x0a000000
7121 | ((glue_addr >> 2) & 0x00ffffff);
7125 /* Preserve Rm (lowest four bits) and the condition code
7126 (highest four bits). Other bits encode MOV PC,Rm. */
7127 insn = (insn & 0xf000000f) | 0x01a0f000;
7130 bfd_put_32 (input_bfd, insn, hit_data);
7132 return bfd_reloc_ok;
7134 case R_ARM_MOVW_ABS_NC:
7135 case R_ARM_MOVT_ABS:
7136 case R_ARM_MOVW_PREL_NC:
7137 case R_ARM_MOVT_PREL:
7138 /* Until we properly support segment-base-relative addressing then
7139 we assume the segment base to be zero, as for the group relocations.
7140 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
7141 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
7142 case R_ARM_MOVW_BREL_NC:
7143 case R_ARM_MOVW_BREL:
7144 case R_ARM_MOVT_BREL:
7146 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7148 if (globals->use_rel)
7150 addend = ((insn >> 4) & 0xf000) | (insn & 0xfff);
7151 signed_addend = (addend ^ 0x8000) - 0x8000;
7154 value += signed_addend;
7156 if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL)
7157 value -= (input_section->output_section->vma
7158 + input_section->output_offset + rel->r_offset);
7160 if (r_type == R_ARM_MOVW_BREL && value >= 0x10000)
7161 return bfd_reloc_overflow;
7163 if (sym_flags == STT_ARM_TFUNC)
7166 if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL
7167 || r_type == R_ARM_MOVT_BREL)
7171 insn |= value & 0xfff;
7172 insn |= (value & 0xf000) << 4;
7173 bfd_put_32 (input_bfd, insn, hit_data);
7175 return bfd_reloc_ok;
7177 case R_ARM_THM_MOVW_ABS_NC:
7178 case R_ARM_THM_MOVT_ABS:
7179 case R_ARM_THM_MOVW_PREL_NC:
7180 case R_ARM_THM_MOVT_PREL:
7181 /* Until we properly support segment-base-relative addressing then
7182 we assume the segment base to be zero, as for the above relocations.
7183 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
7184 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
7185 as R_ARM_THM_MOVT_ABS. */
7186 case R_ARM_THM_MOVW_BREL_NC:
7187 case R_ARM_THM_MOVW_BREL:
7188 case R_ARM_THM_MOVT_BREL:
7192 insn = bfd_get_16 (input_bfd, hit_data) << 16;
7193 insn |= bfd_get_16 (input_bfd, hit_data + 2);
7195 if (globals->use_rel)
7197 addend = ((insn >> 4) & 0xf000)
7198 | ((insn >> 15) & 0x0800)
7199 | ((insn >> 4) & 0x0700)
7201 signed_addend = (addend ^ 0x8000) - 0x8000;
7204 value += signed_addend;
7206 if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL)
7207 value -= (input_section->output_section->vma
7208 + input_section->output_offset + rel->r_offset);
7210 if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000)
7211 return bfd_reloc_overflow;
7213 if (sym_flags == STT_ARM_TFUNC)
7216 if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL
7217 || r_type == R_ARM_THM_MOVT_BREL)
7221 insn |= (value & 0xf000) << 4;
7222 insn |= (value & 0x0800) << 15;
7223 insn |= (value & 0x0700) << 4;
7224 insn |= (value & 0x00ff);
7226 bfd_put_16 (input_bfd, insn >> 16, hit_data);
7227 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
7229 return bfd_reloc_ok;
7231 case R_ARM_ALU_PC_G0_NC:
7232 case R_ARM_ALU_PC_G1_NC:
7233 case R_ARM_ALU_PC_G0:
7234 case R_ARM_ALU_PC_G1:
7235 case R_ARM_ALU_PC_G2:
7236 case R_ARM_ALU_SB_G0_NC:
7237 case R_ARM_ALU_SB_G1_NC:
7238 case R_ARM_ALU_SB_G0:
7239 case R_ARM_ALU_SB_G1:
7240 case R_ARM_ALU_SB_G2:
7242 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7243 bfd_vma pc = input_section->output_section->vma
7244 + input_section->output_offset + rel->r_offset;
7245 /* sb should be the origin of the *segment* containing the symbol.
7246 It is not clear how to obtain this OS-dependent value, so we
7247 make an arbitrary choice of zero. */
7251 bfd_signed_vma signed_value;
7254 /* Determine which group of bits to select. */
7257 case R_ARM_ALU_PC_G0_NC:
7258 case R_ARM_ALU_PC_G0:
7259 case R_ARM_ALU_SB_G0_NC:
7260 case R_ARM_ALU_SB_G0:
7264 case R_ARM_ALU_PC_G1_NC:
7265 case R_ARM_ALU_PC_G1:
7266 case R_ARM_ALU_SB_G1_NC:
7267 case R_ARM_ALU_SB_G1:
7271 case R_ARM_ALU_PC_G2:
7272 case R_ARM_ALU_SB_G2:
7280 /* If REL, extract the addend from the insn. If RELA, it will
7281 have already been fetched for us. */
7282 if (globals->use_rel)
7285 bfd_vma constant = insn & 0xff;
7286 bfd_vma rotation = (insn & 0xf00) >> 8;
7289 signed_addend = constant;
7292 /* Compensate for the fact that in the instruction, the
7293 rotation is stored in multiples of 2 bits. */
7296 /* Rotate "constant" right by "rotation" bits. */
7297 signed_addend = (constant >> rotation) |
7298 (constant << (8 * sizeof (bfd_vma) - rotation));
7301 /* Determine if the instruction is an ADD or a SUB.
7302 (For REL, this determines the sign of the addend.) */
7303 negative = identify_add_or_sub (insn);
7306 (*_bfd_error_handler)
7307 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
7308 input_bfd, input_section,
7309 (long) rel->r_offset, howto->name);
7310 return bfd_reloc_overflow;
7313 signed_addend *= negative;
7316 /* Compute the value (X) to go in the place. */
7317 if (r_type == R_ARM_ALU_PC_G0_NC
7318 || r_type == R_ARM_ALU_PC_G1_NC
7319 || r_type == R_ARM_ALU_PC_G0
7320 || r_type == R_ARM_ALU_PC_G1
7321 || r_type == R_ARM_ALU_PC_G2)
7323 signed_value = value - pc + signed_addend;
7325 /* Section base relative. */
7326 signed_value = value - sb + signed_addend;
7328 /* If the target symbol is a Thumb function, then set the
7329 Thumb bit in the address. */
7330 if (sym_flags == STT_ARM_TFUNC)
7333 /* Calculate the value of the relevant G_n, in encoded
7334 constant-with-rotation format. */
7335 g_n = calculate_group_reloc_mask (abs (signed_value), group,
7338 /* Check for overflow if required. */
7339 if ((r_type == R_ARM_ALU_PC_G0
7340 || r_type == R_ARM_ALU_PC_G1
7341 || r_type == R_ARM_ALU_PC_G2
7342 || r_type == R_ARM_ALU_SB_G0
7343 || r_type == R_ARM_ALU_SB_G1
7344 || r_type == R_ARM_ALU_SB_G2) && residual != 0)
7346 (*_bfd_error_handler)
7347 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7348 input_bfd, input_section,
7349 (long) rel->r_offset, abs (signed_value), howto->name);
7350 return bfd_reloc_overflow;
7353 /* Mask out the value and the ADD/SUB part of the opcode; take care
7354 not to destroy the S bit. */
7357 /* Set the opcode according to whether the value to go in the
7358 place is negative. */
7359 if (signed_value < 0)
7364 /* Encode the offset. */
7367 bfd_put_32 (input_bfd, insn, hit_data);
7369 return bfd_reloc_ok;
7371 case R_ARM_LDR_PC_G0:
7372 case R_ARM_LDR_PC_G1:
7373 case R_ARM_LDR_PC_G2:
7374 case R_ARM_LDR_SB_G0:
7375 case R_ARM_LDR_SB_G1:
7376 case R_ARM_LDR_SB_G2:
7378 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7379 bfd_vma pc = input_section->output_section->vma
7380 + input_section->output_offset + rel->r_offset;
7381 bfd_vma sb = 0; /* See note above. */
7383 bfd_signed_vma signed_value;
7386 /* Determine which groups of bits to calculate. */
7389 case R_ARM_LDR_PC_G0:
7390 case R_ARM_LDR_SB_G0:
7394 case R_ARM_LDR_PC_G1:
7395 case R_ARM_LDR_SB_G1:
7399 case R_ARM_LDR_PC_G2:
7400 case R_ARM_LDR_SB_G2:
7408 /* If REL, extract the addend from the insn. If RELA, it will
7409 have already been fetched for us. */
7410 if (globals->use_rel)
7412 int negative = (insn & (1 << 23)) ? 1 : -1;
7413 signed_addend = negative * (insn & 0xfff);
7416 /* Compute the value (X) to go in the place. */
7417 if (r_type == R_ARM_LDR_PC_G0
7418 || r_type == R_ARM_LDR_PC_G1
7419 || r_type == R_ARM_LDR_PC_G2)
7421 signed_value = value - pc + signed_addend;
7423 /* Section base relative. */
7424 signed_value = value - sb + signed_addend;
7426 /* Calculate the value of the relevant G_{n-1} to obtain
7427 the residual at that stage. */
7428 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7430 /* Check for overflow. */
7431 if (residual >= 0x1000)
7433 (*_bfd_error_handler)
7434 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7435 input_bfd, input_section,
7436 (long) rel->r_offset, abs (signed_value), howto->name);
7437 return bfd_reloc_overflow;
7440 /* Mask out the value and U bit. */
7443 /* Set the U bit if the value to go in the place is non-negative. */
7444 if (signed_value >= 0)
7447 /* Encode the offset. */
7450 bfd_put_32 (input_bfd, insn, hit_data);
7452 return bfd_reloc_ok;
7454 case R_ARM_LDRS_PC_G0:
7455 case R_ARM_LDRS_PC_G1:
7456 case R_ARM_LDRS_PC_G2:
7457 case R_ARM_LDRS_SB_G0:
7458 case R_ARM_LDRS_SB_G1:
7459 case R_ARM_LDRS_SB_G2:
7461 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7462 bfd_vma pc = input_section->output_section->vma
7463 + input_section->output_offset + rel->r_offset;
7464 bfd_vma sb = 0; /* See note above. */
7466 bfd_signed_vma signed_value;
7469 /* Determine which groups of bits to calculate. */
7472 case R_ARM_LDRS_PC_G0:
7473 case R_ARM_LDRS_SB_G0:
7477 case R_ARM_LDRS_PC_G1:
7478 case R_ARM_LDRS_SB_G1:
7482 case R_ARM_LDRS_PC_G2:
7483 case R_ARM_LDRS_SB_G2:
7491 /* If REL, extract the addend from the insn. If RELA, it will
7492 have already been fetched for us. */
7493 if (globals->use_rel)
7495 int negative = (insn & (1 << 23)) ? 1 : -1;
7496 signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf));
7499 /* Compute the value (X) to go in the place. */
7500 if (r_type == R_ARM_LDRS_PC_G0
7501 || r_type == R_ARM_LDRS_PC_G1
7502 || r_type == R_ARM_LDRS_PC_G2)
7504 signed_value = value - pc + signed_addend;
7506 /* Section base relative. */
7507 signed_value = value - sb + signed_addend;
7509 /* Calculate the value of the relevant G_{n-1} to obtain
7510 the residual at that stage. */
7511 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7513 /* Check for overflow. */
7514 if (residual >= 0x100)
7516 (*_bfd_error_handler)
7517 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7518 input_bfd, input_section,
7519 (long) rel->r_offset, abs (signed_value), howto->name);
7520 return bfd_reloc_overflow;
7523 /* Mask out the value and U bit. */
7526 /* Set the U bit if the value to go in the place is non-negative. */
7527 if (signed_value >= 0)
7530 /* Encode the offset. */
7531 insn |= ((residual & 0xf0) << 4) | (residual & 0xf);
7533 bfd_put_32 (input_bfd, insn, hit_data);
7535 return bfd_reloc_ok;
7537 case R_ARM_LDC_PC_G0:
7538 case R_ARM_LDC_PC_G1:
7539 case R_ARM_LDC_PC_G2:
7540 case R_ARM_LDC_SB_G0:
7541 case R_ARM_LDC_SB_G1:
7542 case R_ARM_LDC_SB_G2:
7544 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7545 bfd_vma pc = input_section->output_section->vma
7546 + input_section->output_offset + rel->r_offset;
7547 bfd_vma sb = 0; /* See note above. */
7549 bfd_signed_vma signed_value;
7552 /* Determine which groups of bits to calculate. */
7555 case R_ARM_LDC_PC_G0:
7556 case R_ARM_LDC_SB_G0:
7560 case R_ARM_LDC_PC_G1:
7561 case R_ARM_LDC_SB_G1:
7565 case R_ARM_LDC_PC_G2:
7566 case R_ARM_LDC_SB_G2:
7574 /* If REL, extract the addend from the insn. If RELA, it will
7575 have already been fetched for us. */
7576 if (globals->use_rel)
7578 int negative = (insn & (1 << 23)) ? 1 : -1;
7579 signed_addend = negative * ((insn & 0xff) << 2);
7582 /* Compute the value (X) to go in the place. */
7583 if (r_type == R_ARM_LDC_PC_G0
7584 || r_type == R_ARM_LDC_PC_G1
7585 || r_type == R_ARM_LDC_PC_G2)
7587 signed_value = value - pc + signed_addend;
7589 /* Section base relative. */
7590 signed_value = value - sb + signed_addend;
7592 /* Calculate the value of the relevant G_{n-1} to obtain
7593 the residual at that stage. */
7594 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7596 /* Check for overflow. (The absolute value to go in the place must be
7597 divisible by four and, after having been divided by four, must
7598 fit in eight bits.) */
7599 if ((residual & 0x3) != 0 || residual >= 0x400)
7601 (*_bfd_error_handler)
7602 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7603 input_bfd, input_section,
7604 (long) rel->r_offset, abs (signed_value), howto->name);
7605 return bfd_reloc_overflow;
7608 /* Mask out the value and U bit. */
7611 /* Set the U bit if the value to go in the place is non-negative. */
7612 if (signed_value >= 0)
7615 /* Encode the offset. */
7616 insn |= residual >> 2;
7618 bfd_put_32 (input_bfd, insn, hit_data);
7620 return bfd_reloc_ok;
7623 return bfd_reloc_notsupported;
7627 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
7629 arm_add_to_rel (bfd * abfd,
7631 reloc_howto_type * howto,
7632 bfd_signed_vma increment)
7634 bfd_signed_vma addend;
7636 if (howto->type == R_ARM_THM_CALL
7637 || howto->type == R_ARM_THM_JUMP24)
7639 int upper_insn, lower_insn;
7642 upper_insn = bfd_get_16 (abfd, address);
7643 lower_insn = bfd_get_16 (abfd, address + 2);
7644 upper = upper_insn & 0x7ff;
7645 lower = lower_insn & 0x7ff;
7647 addend = (upper << 12) | (lower << 1);
7648 addend += increment;
7651 upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
7652 lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
7654 bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
7655 bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
7661 contents = bfd_get_32 (abfd, address);
7663 /* Get the (signed) value from the instruction. */
7664 addend = contents & howto->src_mask;
7665 if (addend & ((howto->src_mask + 1) >> 1))
7667 bfd_signed_vma mask;
7670 mask &= ~ howto->src_mask;
7674 /* Add in the increment, (which is a byte value). */
7675 switch (howto->type)
7678 addend += increment;
7685 addend <<= howto->size;
7686 addend += increment;
7688 /* Should we check for overflow here ? */
7690 /* Drop any undesired bits. */
7691 addend >>= howto->rightshift;
7695 contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
7697 bfd_put_32 (abfd, contents, address);
7701 #define IS_ARM_TLS_RELOC(R_TYPE) \
7702 ((R_TYPE) == R_ARM_TLS_GD32 \
7703 || (R_TYPE) == R_ARM_TLS_LDO32 \
7704 || (R_TYPE) == R_ARM_TLS_LDM32 \
7705 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
7706 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
7707 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
7708 || (R_TYPE) == R_ARM_TLS_LE32 \
7709 || (R_TYPE) == R_ARM_TLS_IE32)
7711 /* Relocate an ARM ELF section. */
7714 elf32_arm_relocate_section (bfd * output_bfd,
7715 struct bfd_link_info * info,
7717 asection * input_section,
7718 bfd_byte * contents,
7719 Elf_Internal_Rela * relocs,
7720 Elf_Internal_Sym * local_syms,
7721 asection ** local_sections)
7723 Elf_Internal_Shdr *symtab_hdr;
7724 struct elf_link_hash_entry **sym_hashes;
7725 Elf_Internal_Rela *rel;
7726 Elf_Internal_Rela *relend;
7728 struct elf32_arm_link_hash_table * globals;
7730 globals = elf32_arm_hash_table (info);
7732 symtab_hdr = & elf_symtab_hdr (input_bfd);
7733 sym_hashes = elf_sym_hashes (input_bfd);
7736 relend = relocs + input_section->reloc_count;
7737 for (; rel < relend; rel++)
7740 reloc_howto_type * howto;
7741 unsigned long r_symndx;
7742 Elf_Internal_Sym * sym;
7744 struct elf_link_hash_entry * h;
7746 bfd_reloc_status_type r;
7749 bfd_boolean unresolved_reloc = FALSE;
7750 char *error_message = NULL;
7752 r_symndx = ELF32_R_SYM (rel->r_info);
7753 r_type = ELF32_R_TYPE (rel->r_info);
7754 r_type = arm_real_reloc_type (globals, r_type);
7756 if ( r_type == R_ARM_GNU_VTENTRY
7757 || r_type == R_ARM_GNU_VTINHERIT)
7760 bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
7761 howto = bfd_reloc.howto;
7767 if (r_symndx < symtab_hdr->sh_info)
7769 sym = local_syms + r_symndx;
7770 sym_type = ELF32_ST_TYPE (sym->st_info);
7771 sec = local_sections[r_symndx];
7772 if (globals->use_rel)
7774 relocation = (sec->output_section->vma
7775 + sec->output_offset
7777 if (!info->relocatable
7778 && (sec->flags & SEC_MERGE)
7779 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
7782 bfd_vma addend, value;
7786 case R_ARM_MOVW_ABS_NC:
7787 case R_ARM_MOVT_ABS:
7788 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
7789 addend = ((value & 0xf0000) >> 4) | (value & 0xfff);
7790 addend = (addend ^ 0x8000) - 0x8000;
7793 case R_ARM_THM_MOVW_ABS_NC:
7794 case R_ARM_THM_MOVT_ABS:
7795 value = bfd_get_16 (input_bfd, contents + rel->r_offset)
7797 value |= bfd_get_16 (input_bfd,
7798 contents + rel->r_offset + 2);
7799 addend = ((value & 0xf7000) >> 4) | (value & 0xff)
7800 | ((value & 0x04000000) >> 15);
7801 addend = (addend ^ 0x8000) - 0x8000;
7805 if (howto->rightshift
7806 || (howto->src_mask & (howto->src_mask + 1)))
7808 (*_bfd_error_handler)
7809 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
7810 input_bfd, input_section,
7811 (long) rel->r_offset, howto->name);
7815 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
7817 /* Get the (signed) value from the instruction. */
7818 addend = value & howto->src_mask;
7819 if (addend & ((howto->src_mask + 1) >> 1))
7821 bfd_signed_vma mask;
7824 mask &= ~ howto->src_mask;
7832 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
7834 addend += msec->output_section->vma + msec->output_offset;
7836 /* Cases here must match those in the preceeding
7837 switch statement. */
7840 case R_ARM_MOVW_ABS_NC:
7841 case R_ARM_MOVT_ABS:
7842 value = (value & 0xfff0f000) | ((addend & 0xf000) << 4)
7844 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
7847 case R_ARM_THM_MOVW_ABS_NC:
7848 case R_ARM_THM_MOVT_ABS:
7849 value = (value & 0xfbf08f00) | ((addend & 0xf700) << 4)
7850 | (addend & 0xff) | ((addend & 0x0800) << 15);
7851 bfd_put_16 (input_bfd, value >> 16,
7852 contents + rel->r_offset);
7853 bfd_put_16 (input_bfd, value,
7854 contents + rel->r_offset + 2);
7858 value = (value & ~ howto->dst_mask)
7859 | (addend & howto->dst_mask);
7860 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
7866 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7872 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7873 r_symndx, symtab_hdr, sym_hashes,
7875 unresolved_reloc, warned);
7880 if (sec != NULL && elf_discarded_section (sec))
7882 /* For relocs against symbols from removed linkonce sections,
7883 or sections discarded by a linker script, we just want the
7884 section contents zeroed. Avoid any special processing. */
7885 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
7891 if (info->relocatable)
7893 /* This is a relocatable link. We don't have to change
7894 anything, unless the reloc is against a section symbol,
7895 in which case we have to adjust according to where the
7896 section symbol winds up in the output section. */
7897 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
7899 if (globals->use_rel)
7900 arm_add_to_rel (input_bfd, contents + rel->r_offset,
7901 howto, (bfd_signed_vma) sec->output_offset);
7903 rel->r_addend += sec->output_offset;
7909 name = h->root.root.string;
7912 name = (bfd_elf_string_from_elf_section
7913 (input_bfd, symtab_hdr->sh_link, sym->st_name));
7914 if (name == NULL || *name == '\0')
7915 name = bfd_section_name (input_bfd, sec);
7919 && r_type != R_ARM_NONE
7921 || h->root.type == bfd_link_hash_defined
7922 || h->root.type == bfd_link_hash_defweak)
7923 && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
7925 (*_bfd_error_handler)
7926 ((sym_type == STT_TLS
7927 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
7928 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
7931 (long) rel->r_offset,
7936 r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
7937 input_section, contents, rel,
7938 relocation, info, sec, name,
7939 (h ? ELF_ST_TYPE (h->type) :
7940 ELF_ST_TYPE (sym->st_info)), h,
7941 &unresolved_reloc, &error_message);
7943 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
7944 because such sections are not SEC_ALLOC and thus ld.so will
7945 not process them. */
7946 if (unresolved_reloc
7947 && !((input_section->flags & SEC_DEBUGGING) != 0
7950 (*_bfd_error_handler)
7951 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7954 (long) rel->r_offset,
7956 h->root.root.string);
7960 if (r != bfd_reloc_ok)
7964 case bfd_reloc_overflow:
7965 /* If the overflowing reloc was to an undefined symbol,
7966 we have already printed one error message and there
7967 is no point complaining again. */
7969 h->root.type != bfd_link_hash_undefined)
7970 && (!((*info->callbacks->reloc_overflow)
7971 (info, (h ? &h->root : NULL), name, howto->name,
7972 (bfd_vma) 0, input_bfd, input_section,
7977 case bfd_reloc_undefined:
7978 if (!((*info->callbacks->undefined_symbol)
7979 (info, name, input_bfd, input_section,
7980 rel->r_offset, TRUE)))
7984 case bfd_reloc_outofrange:
7985 error_message = _("out of range");
7988 case bfd_reloc_notsupported:
7989 error_message = _("unsupported relocation");
7992 case bfd_reloc_dangerous:
7993 /* error_message should already be set. */
7997 error_message = _("unknown error");
8001 BFD_ASSERT (error_message != NULL);
8002 if (!((*info->callbacks->reloc_dangerous)
8003 (info, error_message, input_bfd, input_section,
8014 /* Set the right machine number. */
8017 elf32_arm_object_p (bfd *abfd)
8021 mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
8023 if (mach != bfd_mach_arm_unknown)
8024 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
8026 else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
8027 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
8030 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
8035 /* Function to keep ARM specific flags in the ELF header. */
8038 elf32_arm_set_private_flags (bfd *abfd, flagword flags)
8040 if (elf_flags_init (abfd)
8041 && elf_elfheader (abfd)->e_flags != flags)
8043 if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
8045 if (flags & EF_ARM_INTERWORK)
8046 (*_bfd_error_handler)
8047 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
8051 (_("Warning: Clearing the interworking flag of %B due to outside request"),
8057 elf_elfheader (abfd)->e_flags = flags;
8058 elf_flags_init (abfd) = TRUE;
8064 /* Copy backend specific data from one object module to another. */
8067 elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
8072 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
8075 in_flags = elf_elfheader (ibfd)->e_flags;
8076 out_flags = elf_elfheader (obfd)->e_flags;
8078 if (elf_flags_init (obfd)
8079 && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
8080 && in_flags != out_flags)
8082 /* Cannot mix APCS26 and APCS32 code. */
8083 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
8086 /* Cannot mix float APCS and non-float APCS code. */
8087 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
8090 /* If the src and dest have different interworking flags
8091 then turn off the interworking bit. */
8092 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
8094 if (out_flags & EF_ARM_INTERWORK)
8096 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
8099 in_flags &= ~EF_ARM_INTERWORK;
8102 /* Likewise for PIC, though don't warn for this case. */
8103 if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
8104 in_flags &= ~EF_ARM_PIC;
8107 elf_elfheader (obfd)->e_flags = in_flags;
8108 elf_flags_init (obfd) = TRUE;
8110 /* Also copy the EI_OSABI field. */
8111 elf_elfheader (obfd)->e_ident[EI_OSABI] =
8112 elf_elfheader (ibfd)->e_ident[EI_OSABI];
8114 /* Copy object attributes. */
8115 _bfd_elf_copy_obj_attributes (ibfd, obfd);
8120 /* Values for Tag_ABI_PCS_R9_use. */
8129 /* Values for Tag_ABI_PCS_RW_data. */
8132 AEABI_PCS_RW_data_absolute,
8133 AEABI_PCS_RW_data_PCrel,
8134 AEABI_PCS_RW_data_SBrel,
8135 AEABI_PCS_RW_data_unused
8138 /* Values for Tag_ABI_enum_size. */
8144 AEABI_enum_forced_wide
8147 /* Determine whether an object attribute tag takes an integer, a
8151 elf32_arm_obj_attrs_arg_type (int tag)
8153 if (tag == Tag_compatibility)
8155 else if (tag == 4 || tag == 5)
8160 return (tag & 1) != 0 ? 2 : 1;
8163 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
8164 are conflicting attributes. */
8167 elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
8169 obj_attribute *in_attr;
8170 obj_attribute *out_attr;
8171 obj_attribute_list *in_list;
8172 /* Some tags have 0 = don't care, 1 = strong requirement,
8173 2 = weak requirement. */
8174 static const int order_312[3] = {3, 1, 2};
8175 /* For use with Tag_VFP_arch. */
8176 static const int order_01243[5] = {0, 1, 2, 4, 3};
8179 if (!elf_known_obj_attributes_proc (obfd)[0].i)
8181 /* This is the first object. Copy the attributes. */
8182 _bfd_elf_copy_obj_attributes (ibfd, obfd);
8184 /* Use the Tag_null value to indicate the attributes have been
8186 elf_known_obj_attributes_proc (obfd)[0].i = 1;
8191 in_attr = elf_known_obj_attributes_proc (ibfd);
8192 out_attr = elf_known_obj_attributes_proc (obfd);
8193 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
8194 if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i)
8196 /* Ignore mismatches if teh object doesn't use floating point. */
8197 if (out_attr[Tag_ABI_FP_number_model].i == 0)
8198 out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i;
8199 else if (in_attr[Tag_ABI_FP_number_model].i != 0)
8202 (_("ERROR: %B uses VFP register arguments, %B does not"),
8208 for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
8210 /* Merge this attribute with existing attributes. */
8213 case Tag_CPU_raw_name:
8215 /* Use whichever has the greatest architecture requirements. We
8216 won't necessarily have both the above tags, so make sure input
8217 name is non-NULL. */
8218 if (in_attr[Tag_CPU_arch].i > out_attr[Tag_CPU_arch].i
8220 out_attr[i].s = _bfd_elf_attr_strdup (obfd, in_attr[i].s);
8223 case Tag_ABI_optimization_goals:
8224 case Tag_ABI_FP_optimization_goals:
8225 /* Use the first value seen. */
8229 case Tag_ARM_ISA_use:
8230 case Tag_THUMB_ISA_use:
8233 /* ??? Do NEON and WMMX conflict? */
8234 case Tag_ABI_FP_rounding:
8235 case Tag_ABI_FP_denormal:
8236 case Tag_ABI_FP_exceptions:
8237 case Tag_ABI_FP_user_exceptions:
8238 case Tag_ABI_FP_number_model:
8239 case Tag_ABI_align8_preserved:
8240 case Tag_ABI_HardFP_use:
8241 /* Use the largest value specified. */
8242 if (in_attr[i].i > out_attr[i].i)
8243 out_attr[i].i = in_attr[i].i;
8246 case Tag_CPU_arch_profile:
8247 /* Warn if conflicting architecture profiles used. */
8248 if (out_attr[i].i && in_attr[i].i && in_attr[i].i != out_attr[i].i)
8251 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
8252 ibfd, in_attr[i].i, out_attr[i].i);
8256 out_attr[i].i = in_attr[i].i;
8259 if (in_attr[i].i > 4 || out_attr[i].i > 4
8260 || order_01243[in_attr[i].i] > order_01243[out_attr[i].i])
8261 out_attr[i].i = in_attr[i].i;
8263 case Tag_PCS_config:
8264 if (out_attr[i].i == 0)
8265 out_attr[i].i = in_attr[i].i;
8266 else if (in_attr[i].i != 0 && out_attr[i].i != 0)
8268 /* It's sometimes ok to mix different configs, so this is only
8271 (_("Warning: %B: Conflicting platform configuration"), ibfd);
8274 case Tag_ABI_PCS_R9_use:
8275 if (in_attr[i].i != out_attr[i].i
8276 && out_attr[i].i != AEABI_R9_unused
8277 && in_attr[i].i != AEABI_R9_unused)
8280 (_("ERROR: %B: Conflicting use of R9"), ibfd);
8283 if (out_attr[i].i == AEABI_R9_unused)
8284 out_attr[i].i = in_attr[i].i;
8286 case Tag_ABI_PCS_RW_data:
8287 if (in_attr[i].i == AEABI_PCS_RW_data_SBrel
8288 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB
8289 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused)
8292 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
8296 /* Use the smallest value specified. */
8297 if (in_attr[i].i < out_attr[i].i)
8298 out_attr[i].i = in_attr[i].i;
8300 case Tag_ABI_PCS_RO_data:
8301 /* Use the smallest value specified. */
8302 if (in_attr[i].i < out_attr[i].i)
8303 out_attr[i].i = in_attr[i].i;
8305 case Tag_ABI_PCS_GOT_use:
8306 if (in_attr[i].i > 2 || out_attr[i].i > 2
8307 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
8308 out_attr[i].i = in_attr[i].i;
8310 case Tag_ABI_PCS_wchar_t:
8311 if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i)
8314 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd);
8318 out_attr[i].i = in_attr[i].i;
8320 case Tag_ABI_align8_needed:
8321 /* ??? Check against Tag_ABI_align8_preserved. */
8322 if (in_attr[i].i > 2 || out_attr[i].i > 2
8323 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
8324 out_attr[i].i = in_attr[i].i;
8326 case Tag_ABI_enum_size:
8327 if (in_attr[i].i != AEABI_enum_unused)
8329 if (out_attr[i].i == AEABI_enum_unused
8330 || out_attr[i].i == AEABI_enum_forced_wide)
8332 /* The existing object is compatible with anything.
8333 Use whatever requirements the new object has. */
8334 out_attr[i].i = in_attr[i].i;
8336 else if (in_attr[i].i != AEABI_enum_forced_wide
8337 && out_attr[i].i != in_attr[i].i
8338 && !elf_arm_tdata (obfd)->no_enum_size_warning)
8340 const char *aeabi_enum_names[] =
8341 { "", "variable-size", "32-bit", "" };
8343 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
8344 ibfd, aeabi_enum_names[in_attr[i].i],
8345 aeabi_enum_names[out_attr[i].i]);
8349 case Tag_ABI_VFP_args:
8352 case Tag_ABI_WMMX_args:
8353 if (in_attr[i].i != out_attr[i].i)
8356 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
8361 default: /* All known attributes should be explicitly covered. */
8365 if (in_attr[i].type && !out_attr[i].type)
8366 switch (in_attr[i].type)
8370 out_attr[i].type = 1;
8375 out_attr[i].type = 2;
8383 /* Merge Tag_compatibility attributes and any common GNU ones. */
8384 _bfd_elf_merge_object_attributes (ibfd, obfd);
8386 /* Check for any attributes not known on ARM. */
8387 in_list = elf_other_obj_attributes_proc (ibfd);
8388 while (in_list && in_list->tag == Tag_compatibility)
8389 in_list = in_list->next;
8391 for (; in_list; in_list = in_list->next)
8393 if ((in_list->tag & 128) < 64)
8396 (_("Warning: %B: Unknown EABI object attribute %d"),
8397 ibfd, in_list->tag);
8405 /* Return TRUE if the two EABI versions are incompatible. */
8408 elf32_arm_versions_compatible (unsigned iver, unsigned over)
8410 /* v4 and v5 are the same spec before and after it was released,
8411 so allow mixing them. */
8412 if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5)
8413 || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4))
8416 return (iver == over);
8419 /* Merge backend specific data from an object file to the output
8420 object file when linking. */
8423 elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
8427 bfd_boolean flags_compatible = TRUE;
8430 /* Check if we have the same endianess. */
8431 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
8434 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
8437 if (!elf32_arm_merge_eabi_attributes (ibfd, obfd))
8440 /* The input BFD must have had its flags initialised. */
8441 /* The following seems bogus to me -- The flags are initialized in
8442 the assembler but I don't think an elf_flags_init field is
8443 written into the object. */
8444 /* BFD_ASSERT (elf_flags_init (ibfd)); */
8446 in_flags = elf_elfheader (ibfd)->e_flags;
8447 out_flags = elf_elfheader (obfd)->e_flags;
8449 /* In theory there is no reason why we couldn't handle this. However
8450 in practice it isn't even close to working and there is no real
8451 reason to want it. */
8452 if (EF_ARM_EABI_VERSION (in_flags) >= EF_ARM_EABI_VER4
8453 && !(ibfd->flags & DYNAMIC)
8454 && (in_flags & EF_ARM_BE8))
8456 _bfd_error_handler (_("ERROR: %B is already in final BE8 format"),
8461 if (!elf_flags_init (obfd))
8463 /* If the input is the default architecture and had the default
8464 flags then do not bother setting the flags for the output
8465 architecture, instead allow future merges to do this. If no
8466 future merges ever set these flags then they will retain their
8467 uninitialised values, which surprise surprise, correspond
8468 to the default values. */
8469 if (bfd_get_arch_info (ibfd)->the_default
8470 && elf_elfheader (ibfd)->e_flags == 0)
8473 elf_flags_init (obfd) = TRUE;
8474 elf_elfheader (obfd)->e_flags = in_flags;
8476 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
8477 && bfd_get_arch_info (obfd)->the_default)
8478 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
8483 /* Determine what should happen if the input ARM architecture
8484 does not match the output ARM architecture. */
8485 if (! bfd_arm_merge_machines (ibfd, obfd))
8488 /* Identical flags must be compatible. */
8489 if (in_flags == out_flags)
8492 /* Check to see if the input BFD actually contains any sections. If
8493 not, its flags may not have been initialised either, but it
8494 cannot actually cause any incompatiblity. Do not short-circuit
8495 dynamic objects; their section list may be emptied by
8496 elf_link_add_object_symbols.
8498 Also check to see if there are no code sections in the input.
8499 In this case there is no need to check for code specific flags.
8500 XXX - do we need to worry about floating-point format compatability
8501 in data sections ? */
8502 if (!(ibfd->flags & DYNAMIC))
8504 bfd_boolean null_input_bfd = TRUE;
8505 bfd_boolean only_data_sections = TRUE;
8507 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
8509 /* Ignore synthetic glue sections. */
8510 if (strcmp (sec->name, ".glue_7")
8511 && strcmp (sec->name, ".glue_7t"))
8513 if ((bfd_get_section_flags (ibfd, sec)
8514 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
8515 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
8516 only_data_sections = FALSE;
8518 null_input_bfd = FALSE;
8523 if (null_input_bfd || only_data_sections)
8527 /* Complain about various flag mismatches. */
8528 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags),
8529 EF_ARM_EABI_VERSION (out_flags)))
8532 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
8534 (in_flags & EF_ARM_EABIMASK) >> 24,
8535 (out_flags & EF_ARM_EABIMASK) >> 24);
8539 /* Not sure what needs to be checked for EABI versions >= 1. */
8540 /* VxWorks libraries do not use these flags. */
8541 if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed
8542 && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed
8543 && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
8545 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
8548 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
8550 in_flags & EF_ARM_APCS_26 ? 26 : 32,
8551 out_flags & EF_ARM_APCS_26 ? 26 : 32);
8552 flags_compatible = FALSE;
8555 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
8557 if (in_flags & EF_ARM_APCS_FLOAT)
8559 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
8563 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
8566 flags_compatible = FALSE;
8569 if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
8571 if (in_flags & EF_ARM_VFP_FLOAT)
8573 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
8577 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
8580 flags_compatible = FALSE;
8583 if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
8585 if (in_flags & EF_ARM_MAVERICK_FLOAT)
8587 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
8591 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
8594 flags_compatible = FALSE;
8597 #ifdef EF_ARM_SOFT_FLOAT
8598 if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
8600 /* We can allow interworking between code that is VFP format
8601 layout, and uses either soft float or integer regs for
8602 passing floating point arguments and results. We already
8603 know that the APCS_FLOAT flags match; similarly for VFP
8605 if ((in_flags & EF_ARM_APCS_FLOAT) != 0
8606 || (in_flags & EF_ARM_VFP_FLOAT) == 0)
8608 if (in_flags & EF_ARM_SOFT_FLOAT)
8610 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
8614 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
8617 flags_compatible = FALSE;
8622 /* Interworking mismatch is only a warning. */
8623 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
8625 if (in_flags & EF_ARM_INTERWORK)
8628 (_("Warning: %B supports interworking, whereas %B does not"),
8634 (_("Warning: %B does not support interworking, whereas %B does"),
8640 return flags_compatible;
8643 /* Display the flags field. */
8646 elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
8648 FILE * file = (FILE *) ptr;
8649 unsigned long flags;
8651 BFD_ASSERT (abfd != NULL && ptr != NULL);
8653 /* Print normal ELF private data. */
8654 _bfd_elf_print_private_bfd_data (abfd, ptr);
8656 flags = elf_elfheader (abfd)->e_flags;
8657 /* Ignore init flag - it may not be set, despite the flags field
8658 containing valid data. */
8660 /* xgettext:c-format */
8661 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
8663 switch (EF_ARM_EABI_VERSION (flags))
8665 case EF_ARM_EABI_UNKNOWN:
8666 /* The following flag bits are GNU extensions and not part of the
8667 official ARM ELF extended ABI. Hence they are only decoded if
8668 the EABI version is not set. */
8669 if (flags & EF_ARM_INTERWORK)
8670 fprintf (file, _(" [interworking enabled]"));
8672 if (flags & EF_ARM_APCS_26)
8673 fprintf (file, " [APCS-26]");
8675 fprintf (file, " [APCS-32]");
8677 if (flags & EF_ARM_VFP_FLOAT)
8678 fprintf (file, _(" [VFP float format]"));
8679 else if (flags & EF_ARM_MAVERICK_FLOAT)
8680 fprintf (file, _(" [Maverick float format]"));
8682 fprintf (file, _(" [FPA float format]"));
8684 if (flags & EF_ARM_APCS_FLOAT)
8685 fprintf (file, _(" [floats passed in float registers]"));
8687 if (flags & EF_ARM_PIC)
8688 fprintf (file, _(" [position independent]"));
8690 if (flags & EF_ARM_NEW_ABI)
8691 fprintf (file, _(" [new ABI]"));
8693 if (flags & EF_ARM_OLD_ABI)
8694 fprintf (file, _(" [old ABI]"));
8696 if (flags & EF_ARM_SOFT_FLOAT)
8697 fprintf (file, _(" [software FP]"));
8699 flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
8700 | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
8701 | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
8702 | EF_ARM_MAVERICK_FLOAT);
8705 case EF_ARM_EABI_VER1:
8706 fprintf (file, _(" [Version1 EABI]"));
8708 if (flags & EF_ARM_SYMSARESORTED)
8709 fprintf (file, _(" [sorted symbol table]"));
8711 fprintf (file, _(" [unsorted symbol table]"));
8713 flags &= ~ EF_ARM_SYMSARESORTED;
8716 case EF_ARM_EABI_VER2:
8717 fprintf (file, _(" [Version2 EABI]"));
8719 if (flags & EF_ARM_SYMSARESORTED)
8720 fprintf (file, _(" [sorted symbol table]"));
8722 fprintf (file, _(" [unsorted symbol table]"));
8724 if (flags & EF_ARM_DYNSYMSUSESEGIDX)
8725 fprintf (file, _(" [dynamic symbols use segment index]"));
8727 if (flags & EF_ARM_MAPSYMSFIRST)
8728 fprintf (file, _(" [mapping symbols precede others]"));
8730 flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
8731 | EF_ARM_MAPSYMSFIRST);
8734 case EF_ARM_EABI_VER3:
8735 fprintf (file, _(" [Version3 EABI]"));
8738 case EF_ARM_EABI_VER4:
8739 fprintf (file, _(" [Version4 EABI]"));
8742 case EF_ARM_EABI_VER5:
8743 fprintf (file, _(" [Version5 EABI]"));
8745 if (flags & EF_ARM_BE8)
8746 fprintf (file, _(" [BE8]"));
8748 if (flags & EF_ARM_LE8)
8749 fprintf (file, _(" [LE8]"));
8751 flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
8755 fprintf (file, _(" <EABI version unrecognised>"));
8759 flags &= ~ EF_ARM_EABIMASK;
8761 if (flags & EF_ARM_RELEXEC)
8762 fprintf (file, _(" [relocatable executable]"));
8764 if (flags & EF_ARM_HASENTRY)
8765 fprintf (file, _(" [has entry point]"));
8767 flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
8770 fprintf (file, _("<Unrecognised flag bits set>"));
8778 elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
8780 switch (ELF_ST_TYPE (elf_sym->st_info))
8783 return ELF_ST_TYPE (elf_sym->st_info);
8786 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
8787 This allows us to distinguish between data used by Thumb instructions
8788 and non-data (which is probably code) inside Thumb regions of an
8790 if (type != STT_OBJECT && type != STT_TLS)
8791 return ELF_ST_TYPE (elf_sym->st_info);
8802 elf32_arm_gc_mark_hook (asection *sec,
8803 struct bfd_link_info *info,
8804 Elf_Internal_Rela *rel,
8805 struct elf_link_hash_entry *h,
8806 Elf_Internal_Sym *sym)
8809 switch (ELF32_R_TYPE (rel->r_info))
8811 case R_ARM_GNU_VTINHERIT:
8812 case R_ARM_GNU_VTENTRY:
8816 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
8819 /* Update the got entry reference counts for the section being removed. */
8822 elf32_arm_gc_sweep_hook (bfd * abfd,
8823 struct bfd_link_info * info,
8825 const Elf_Internal_Rela * relocs)
8827 Elf_Internal_Shdr *symtab_hdr;
8828 struct elf_link_hash_entry **sym_hashes;
8829 bfd_signed_vma *local_got_refcounts;
8830 const Elf_Internal_Rela *rel, *relend;
8831 struct elf32_arm_link_hash_table * globals;
8833 if (info->relocatable)
8836 globals = elf32_arm_hash_table (info);
8838 elf_section_data (sec)->local_dynrel = NULL;
8840 symtab_hdr = & elf_symtab_hdr (abfd);
8841 sym_hashes = elf_sym_hashes (abfd);
8842 local_got_refcounts = elf_local_got_refcounts (abfd);
8844 check_use_blx (globals);
8846 relend = relocs + sec->reloc_count;
8847 for (rel = relocs; rel < relend; rel++)
8849 unsigned long r_symndx;
8850 struct elf_link_hash_entry *h = NULL;
8853 r_symndx = ELF32_R_SYM (rel->r_info);
8854 if (r_symndx >= symtab_hdr->sh_info)
8856 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8857 while (h->root.type == bfd_link_hash_indirect
8858 || h->root.type == bfd_link_hash_warning)
8859 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8862 r_type = ELF32_R_TYPE (rel->r_info);
8863 r_type = arm_real_reloc_type (globals, r_type);
8867 case R_ARM_GOT_PREL:
8868 case R_ARM_TLS_GD32:
8869 case R_ARM_TLS_IE32:
8872 if (h->got.refcount > 0)
8873 h->got.refcount -= 1;
8875 else if (local_got_refcounts != NULL)
8877 if (local_got_refcounts[r_symndx] > 0)
8878 local_got_refcounts[r_symndx] -= 1;
8882 case R_ARM_TLS_LDM32:
8883 elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1;
8887 case R_ARM_ABS32_NOI:
8889 case R_ARM_REL32_NOI:
8895 case R_ARM_THM_CALL:
8896 case R_ARM_THM_JUMP24:
8897 case R_ARM_THM_JUMP19:
8898 case R_ARM_MOVW_ABS_NC:
8899 case R_ARM_MOVT_ABS:
8900 case R_ARM_MOVW_PREL_NC:
8901 case R_ARM_MOVT_PREL:
8902 case R_ARM_THM_MOVW_ABS_NC:
8903 case R_ARM_THM_MOVT_ABS:
8904 case R_ARM_THM_MOVW_PREL_NC:
8905 case R_ARM_THM_MOVT_PREL:
8906 /* Should the interworking branches be here also? */
8910 struct elf32_arm_link_hash_entry *eh;
8911 struct elf32_arm_relocs_copied **pp;
8912 struct elf32_arm_relocs_copied *p;
8914 eh = (struct elf32_arm_link_hash_entry *) h;
8916 if (h->plt.refcount > 0)
8918 h->plt.refcount -= 1;
8919 if (r_type == R_ARM_THM_CALL)
8920 eh->plt_maybe_thumb_refcount--;
8922 if (r_type == R_ARM_THM_JUMP24
8923 || r_type == R_ARM_THM_JUMP19)
8924 eh->plt_thumb_refcount--;
8927 if (r_type == R_ARM_ABS32
8928 || r_type == R_ARM_REL32
8929 || r_type == R_ARM_ABS32_NOI
8930 || r_type == R_ARM_REL32_NOI)
8932 for (pp = &eh->relocs_copied; (p = *pp) != NULL;
8934 if (p->section == sec)
8937 if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32
8938 || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI)
8956 /* Look through the relocs for a section during the first phase. */
8959 elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
8960 asection *sec, const Elf_Internal_Rela *relocs)
8962 Elf_Internal_Shdr *symtab_hdr;
8963 struct elf_link_hash_entry **sym_hashes;
8964 const Elf_Internal_Rela *rel;
8965 const Elf_Internal_Rela *rel_end;
8968 bfd_vma *local_got_offsets;
8969 struct elf32_arm_link_hash_table *htab;
8970 bfd_boolean needs_plt;
8972 if (info->relocatable)
8975 BFD_ASSERT (is_arm_elf (abfd));
8977 htab = elf32_arm_hash_table (info);
8980 /* Create dynamic sections for relocatable executables so that we can
8981 copy relocations. */
8982 if (htab->root.is_relocatable_executable
8983 && ! htab->root.dynamic_sections_created)
8985 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
8989 dynobj = elf_hash_table (info)->dynobj;
8990 local_got_offsets = elf_local_got_offsets (abfd);
8992 symtab_hdr = & elf_symtab_hdr (abfd);
8993 sym_hashes = elf_sym_hashes (abfd);
8995 rel_end = relocs + sec->reloc_count;
8996 for (rel = relocs; rel < rel_end; rel++)
8998 struct elf_link_hash_entry *h;
8999 struct elf32_arm_link_hash_entry *eh;
9000 unsigned long r_symndx;
9003 r_symndx = ELF32_R_SYM (rel->r_info);
9004 r_type = ELF32_R_TYPE (rel->r_info);
9005 r_type = arm_real_reloc_type (htab, r_type);
9007 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
9009 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
9014 if (r_symndx < symtab_hdr->sh_info)
9018 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
9019 while (h->root.type == bfd_link_hash_indirect
9020 || h->root.type == bfd_link_hash_warning)
9021 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9024 eh = (struct elf32_arm_link_hash_entry *) h;
9029 case R_ARM_GOT_PREL:
9030 case R_ARM_TLS_GD32:
9031 case R_ARM_TLS_IE32:
9032 /* This symbol requires a global offset table entry. */
9034 int tls_type, old_tls_type;
9038 case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
9039 case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
9040 default: tls_type = GOT_NORMAL; break;
9046 old_tls_type = elf32_arm_hash_entry (h)->tls_type;
9050 bfd_signed_vma *local_got_refcounts;
9052 /* This is a global offset table entry for a local symbol. */
9053 local_got_refcounts = elf_local_got_refcounts (abfd);
9054 if (local_got_refcounts == NULL)
9058 size = symtab_hdr->sh_info;
9059 size *= (sizeof (bfd_signed_vma) + sizeof (char));
9060 local_got_refcounts = bfd_zalloc (abfd, size);
9061 if (local_got_refcounts == NULL)
9063 elf_local_got_refcounts (abfd) = local_got_refcounts;
9064 elf32_arm_local_got_tls_type (abfd)
9065 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
9067 local_got_refcounts[r_symndx] += 1;
9068 old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
9071 /* We will already have issued an error message if there is a
9072 TLS / non-TLS mismatch, based on the symbol type. We don't
9073 support any linker relaxations. So just combine any TLS
9075 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
9076 && tls_type != GOT_NORMAL)
9077 tls_type |= old_tls_type;
9079 if (old_tls_type != tls_type)
9082 elf32_arm_hash_entry (h)->tls_type = tls_type;
9084 elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
9089 case R_ARM_TLS_LDM32:
9090 if (r_type == R_ARM_TLS_LDM32)
9091 htab->tls_ldm_got.refcount++;
9094 case R_ARM_GOTOFF32:
9096 if (htab->sgot == NULL)
9098 if (htab->root.dynobj == NULL)
9099 htab->root.dynobj = abfd;
9100 if (!create_got_section (htab->root.dynobj, info))
9106 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
9107 ldr __GOTT_INDEX__ offsets. */
9108 if (!htab->vxworks_p)
9117 case R_ARM_THM_CALL:
9118 case R_ARM_THM_JUMP24:
9119 case R_ARM_THM_JUMP19:
9124 case R_ARM_ABS32_NOI:
9126 case R_ARM_REL32_NOI:
9127 case R_ARM_MOVW_ABS_NC:
9128 case R_ARM_MOVT_ABS:
9129 case R_ARM_MOVW_PREL_NC:
9130 case R_ARM_MOVT_PREL:
9131 case R_ARM_THM_MOVW_ABS_NC:
9132 case R_ARM_THM_MOVT_ABS:
9133 case R_ARM_THM_MOVW_PREL_NC:
9134 case R_ARM_THM_MOVT_PREL:
9138 /* Should the interworking branches be listed here? */
9141 /* If this reloc is in a read-only section, we might
9142 need a copy reloc. We can't check reliably at this
9143 stage whether the section is read-only, as input
9144 sections have not yet been mapped to output sections.
9145 Tentatively set the flag for now, and correct in
9146 adjust_dynamic_symbol. */
9150 /* We may need a .plt entry if the function this reloc
9151 refers to is in a different object. We can't tell for
9152 sure yet, because something later might force the
9157 /* If we create a PLT entry, this relocation will reference
9158 it, even if it's an ABS32 relocation. */
9159 h->plt.refcount += 1;
9161 /* It's too early to use htab->use_blx here, so we have to
9162 record possible blx references separately from
9163 relocs that definitely need a thumb stub. */
9165 if (r_type == R_ARM_THM_CALL)
9166 eh->plt_maybe_thumb_refcount += 1;
9168 if (r_type == R_ARM_THM_JUMP24
9169 || r_type == R_ARM_THM_JUMP19)
9170 eh->plt_thumb_refcount += 1;
9173 /* If we are creating a shared library or relocatable executable,
9174 and this is a reloc against a global symbol, or a non PC
9175 relative reloc against a local symbol, then we need to copy
9176 the reloc into the shared library. However, if we are linking
9177 with -Bsymbolic, we do not need to copy a reloc against a
9178 global symbol which is defined in an object we are
9179 including in the link (i.e., DEF_REGULAR is set). At
9180 this point we have not seen all the input files, so it is
9181 possible that DEF_REGULAR is not set now but will be set
9182 later (it is never cleared). We account for that
9183 possibility below by storing information in the
9184 relocs_copied field of the hash table entry. */
9185 if ((info->shared || htab->root.is_relocatable_executable)
9186 && (sec->flags & SEC_ALLOC) != 0
9187 && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI)
9188 || (h != NULL && ! h->needs_plt
9189 && (! info->symbolic || ! h->def_regular))))
9191 struct elf32_arm_relocs_copied *p, **head;
9193 /* When creating a shared object, we must copy these
9194 reloc types into the output file. We create a reloc
9195 section in dynobj and make room for this reloc. */
9200 name = (bfd_elf_string_from_elf_section
9202 elf_elfheader (abfd)->e_shstrndx,
9203 elf_section_data (sec)->rel_hdr.sh_name));
9207 BFD_ASSERT (reloc_section_p (htab, name, sec));
9209 sreloc = bfd_get_section_by_name (dynobj, name);
9214 flags = (SEC_HAS_CONTENTS | SEC_READONLY
9215 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
9216 if ((sec->flags & SEC_ALLOC) != 0
9217 /* BPABI objects never have dynamic
9218 relocations mapped. */
9219 && !htab->symbian_p)
9220 flags |= SEC_ALLOC | SEC_LOAD;
9221 sreloc = bfd_make_section_with_flags (dynobj,
9225 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
9229 elf_section_data (sec)->sreloc = sreloc;
9232 /* If this is a global symbol, we count the number of
9233 relocations we need for this symbol. */
9236 head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied;
9240 /* Track dynamic relocs needed for local syms too.
9241 We really need local syms available to do this
9247 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
9252 vpp = &elf_section_data (s)->local_dynrel;
9253 head = (struct elf32_arm_relocs_copied **) vpp;
9257 if (p == NULL || p->section != sec)
9259 bfd_size_type amt = sizeof *p;
9261 p = bfd_alloc (htab->root.dynobj, amt);
9271 if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI)
9277 /* This relocation describes the C++ object vtable hierarchy.
9278 Reconstruct it for later use during GC. */
9279 case R_ARM_GNU_VTINHERIT:
9280 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
9284 /* This relocation describes which C++ vtable entries are actually
9285 used. Record for later use during GC. */
9286 case R_ARM_GNU_VTENTRY:
9287 BFD_ASSERT (h != NULL);
9289 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
9298 /* Unwinding tables are not referenced directly. This pass marks them as
9299 required if the corresponding code section is marked. */
9302 elf32_arm_gc_mark_extra_sections (struct bfd_link_info *info,
9303 elf_gc_mark_hook_fn gc_mark_hook)
9306 Elf_Internal_Shdr **elf_shdrp;
9309 /* Marking EH data may cause additional code sections to be marked,
9310 requiring multiple passes. */
9315 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
9319 if (! is_arm_elf (sub))
9322 elf_shdrp = elf_elfsections (sub);
9323 for (o = sub->sections; o != NULL; o = o->next)
9325 Elf_Internal_Shdr *hdr;
9327 hdr = &elf_section_data (o)->this_hdr;
9328 if (hdr->sh_type == SHT_ARM_EXIDX
9330 && hdr->sh_link < elf_numsections (sub)
9332 && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
9335 if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
9345 /* Treat mapping symbols as special target symbols. */
9348 elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
9350 return bfd_is_arm_special_symbol_name (sym->name,
9351 BFD_ARM_SPECIAL_SYM_TYPE_ANY);
9354 /* This is a copy of elf_find_function() from elf.c except that
9355 ARM mapping symbols are ignored when looking for function names
9356 and STT_ARM_TFUNC is considered to a function type. */
9359 arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
9363 const char ** filename_ptr,
9364 const char ** functionname_ptr)
9366 const char * filename = NULL;
9367 asymbol * func = NULL;
9368 bfd_vma low_func = 0;
9371 for (p = symbols; *p != NULL; p++)
9375 q = (elf_symbol_type *) *p;
9377 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
9382 filename = bfd_asymbol_name (&q->symbol);
9387 /* Skip mapping symbols. */
9388 if ((q->symbol.flags & BSF_LOCAL)
9389 && bfd_is_arm_special_symbol_name (q->symbol.name,
9390 BFD_ARM_SPECIAL_SYM_TYPE_ANY))
9393 if (bfd_get_section (&q->symbol) == section
9394 && q->symbol.value >= low_func
9395 && q->symbol.value <= offset)
9397 func = (asymbol *) q;
9398 low_func = q->symbol.value;
9408 *filename_ptr = filename;
9409 if (functionname_ptr)
9410 *functionname_ptr = bfd_asymbol_name (func);
9416 /* Find the nearest line to a particular section and offset, for error
9417 reporting. This code is a duplicate of the code in elf.c, except
9418 that it uses arm_elf_find_function. */
9421 elf32_arm_find_nearest_line (bfd * abfd,
9425 const char ** filename_ptr,
9426 const char ** functionname_ptr,
9427 unsigned int * line_ptr)
9429 bfd_boolean found = FALSE;
9431 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
9433 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
9434 filename_ptr, functionname_ptr,
9436 & elf_tdata (abfd)->dwarf2_find_line_info))
9438 if (!*functionname_ptr)
9439 arm_elf_find_function (abfd, section, symbols, offset,
9440 *filename_ptr ? NULL : filename_ptr,
9446 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
9447 & found, filename_ptr,
9448 functionname_ptr, line_ptr,
9449 & elf_tdata (abfd)->line_info))
9452 if (found && (*functionname_ptr || *line_ptr))
9455 if (symbols == NULL)
9458 if (! arm_elf_find_function (abfd, section, symbols, offset,
9459 filename_ptr, functionname_ptr))
9467 elf32_arm_find_inliner_info (bfd * abfd,
9468 const char ** filename_ptr,
9469 const char ** functionname_ptr,
9470 unsigned int * line_ptr)
9473 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
9474 functionname_ptr, line_ptr,
9475 & elf_tdata (abfd)->dwarf2_find_line_info);
9479 /* Adjust a symbol defined by a dynamic object and referenced by a
9480 regular object. The current definition is in some section of the
9481 dynamic object, but we're not including those sections. We have to
9482 change the definition to something the rest of the link can
9486 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
9487 struct elf_link_hash_entry * h)
9491 struct elf32_arm_link_hash_entry * eh;
9492 struct elf32_arm_link_hash_table *globals;
9494 globals = elf32_arm_hash_table (info);
9495 dynobj = elf_hash_table (info)->dynobj;
9497 /* Make sure we know what is going on here. */
9498 BFD_ASSERT (dynobj != NULL
9500 || h->u.weakdef != NULL
9503 && !h->def_regular)));
9505 eh = (struct elf32_arm_link_hash_entry *) h;
9507 /* If this is a function, put it in the procedure linkage table. We
9508 will fill in the contents of the procedure linkage table later,
9509 when we know the address of the .got section. */
9510 if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
9513 if (h->plt.refcount <= 0
9514 || SYMBOL_CALLS_LOCAL (info, h)
9515 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
9516 && h->root.type == bfd_link_hash_undefweak))
9518 /* This case can occur if we saw a PLT32 reloc in an input
9519 file, but the symbol was never referred to by a dynamic
9520 object, or if all references were garbage collected. In
9521 such a case, we don't actually need to build a procedure
9522 linkage table, and we can just do a PC24 reloc instead. */
9523 h->plt.offset = (bfd_vma) -1;
9524 eh->plt_thumb_refcount = 0;
9525 eh->plt_maybe_thumb_refcount = 0;
9533 /* It's possible that we incorrectly decided a .plt reloc was
9534 needed for an R_ARM_PC24 or similar reloc to a non-function sym
9535 in check_relocs. We can't decide accurately between function
9536 and non-function syms in check-relocs; Objects loaded later in
9537 the link may change h->type. So fix it now. */
9538 h->plt.offset = (bfd_vma) -1;
9539 eh->plt_thumb_refcount = 0;
9540 eh->plt_maybe_thumb_refcount = 0;
9543 /* If this is a weak symbol, and there is a real definition, the
9544 processor independent code will have arranged for us to see the
9545 real definition first, and we can just use the same value. */
9546 if (h->u.weakdef != NULL)
9548 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
9549 || h->u.weakdef->root.type == bfd_link_hash_defweak);
9550 h->root.u.def.section = h->u.weakdef->root.u.def.section;
9551 h->root.u.def.value = h->u.weakdef->root.u.def.value;
9555 /* If there are no non-GOT references, we do not need a copy
9557 if (!h->non_got_ref)
9560 /* This is a reference to a symbol defined by a dynamic object which
9561 is not a function. */
9563 /* If we are creating a shared library, we must presume that the
9564 only references to the symbol are via the global offset table.
9565 For such cases we need not do anything here; the relocations will
9566 be handled correctly by relocate_section. Relocatable executables
9567 can reference data in shared objects directly, so we don't need to
9568 do anything here. */
9569 if (info->shared || globals->root.is_relocatable_executable)
9574 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
9575 h->root.root.string);
9579 /* We must allocate the symbol in our .dynbss section, which will
9580 become part of the .bss section of the executable. There will be
9581 an entry for this symbol in the .dynsym section. The dynamic
9582 object will contain position independent code, so all references
9583 from the dynamic object to this symbol will go through the global
9584 offset table. The dynamic linker will use the .dynsym entry to
9585 determine the address it must put in the global offset table, so
9586 both the dynamic object and the regular object will refer to the
9587 same memory location for the variable. */
9588 s = bfd_get_section_by_name (dynobj, ".dynbss");
9589 BFD_ASSERT (s != NULL);
9591 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
9592 copy the initial value out of the dynamic object and into the
9593 runtime process image. We need to remember the offset into the
9594 .rel(a).bss section we are going to use. */
9595 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
9599 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss"));
9600 BFD_ASSERT (srel != NULL);
9601 srel->size += RELOC_SIZE (globals);
9605 return _bfd_elf_adjust_dynamic_copy (h, s);
9608 /* Allocate space in .plt, .got and associated reloc sections for
9612 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
9614 struct bfd_link_info *info;
9615 struct elf32_arm_link_hash_table *htab;
9616 struct elf32_arm_link_hash_entry *eh;
9617 struct elf32_arm_relocs_copied *p;
9618 bfd_signed_vma thumb_refs;
9620 eh = (struct elf32_arm_link_hash_entry *) h;
9622 if (h->root.type == bfd_link_hash_indirect)
9625 if (h->root.type == bfd_link_hash_warning)
9626 /* When warning symbols are created, they **replace** the "real"
9627 entry in the hash table, thus we never get to see the real
9628 symbol in a hash traversal. So look at it now. */
9629 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9631 info = (struct bfd_link_info *) inf;
9632 htab = elf32_arm_hash_table (info);
9634 if (htab->root.dynamic_sections_created
9635 && h->plt.refcount > 0)
9637 /* Make sure this symbol is output as a dynamic symbol.
9638 Undefined weak syms won't yet be marked as dynamic. */
9639 if (h->dynindx == -1
9640 && !h->forced_local)
9642 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9647 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
9649 asection *s = htab->splt;
9651 /* If this is the first .plt entry, make room for the special
9654 s->size += htab->plt_header_size;
9656 h->plt.offset = s->size;
9658 /* If we will insert a Thumb trampoline before this PLT, leave room
9660 thumb_refs = eh->plt_thumb_refcount;
9662 thumb_refs += eh->plt_maybe_thumb_refcount;
9666 h->plt.offset += PLT_THUMB_STUB_SIZE;
9667 s->size += PLT_THUMB_STUB_SIZE;
9670 /* If this symbol is not defined in a regular file, and we are
9671 not generating a shared library, then set the symbol to this
9672 location in the .plt. This is required to make function
9673 pointers compare as equal between the normal executable and
9674 the shared library. */
9678 h->root.u.def.section = s;
9679 h->root.u.def.value = h->plt.offset;
9681 /* Make sure the function is not marked as Thumb, in case
9682 it is the target of an ABS32 relocation, which will
9683 point to the PLT entry. */
9684 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
9685 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
9688 /* Make room for this entry. */
9689 s->size += htab->plt_entry_size;
9691 if (!htab->symbian_p)
9693 /* We also need to make an entry in the .got.plt section, which
9694 will be placed in the .got section by the linker script. */
9695 eh->plt_got_offset = htab->sgotplt->size;
9696 htab->sgotplt->size += 4;
9699 /* We also need to make an entry in the .rel(a).plt section. */
9700 htab->srelplt->size += RELOC_SIZE (htab);
9702 /* VxWorks executables have a second set of relocations for
9703 each PLT entry. They go in a separate relocation section,
9704 which is processed by the kernel loader. */
9705 if (htab->vxworks_p && !info->shared)
9707 /* There is a relocation for the initial PLT entry:
9708 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
9709 if (h->plt.offset == htab->plt_header_size)
9710 htab->srelplt2->size += RELOC_SIZE (htab);
9712 /* There are two extra relocations for each subsequent
9713 PLT entry: an R_ARM_32 relocation for the GOT entry,
9714 and an R_ARM_32 relocation for the PLT entry. */
9715 htab->srelplt2->size += RELOC_SIZE (htab) * 2;
9720 h->plt.offset = (bfd_vma) -1;
9726 h->plt.offset = (bfd_vma) -1;
9730 if (h->got.refcount > 0)
9734 int tls_type = elf32_arm_hash_entry (h)->tls_type;
9737 /* Make sure this symbol is output as a dynamic symbol.
9738 Undefined weak syms won't yet be marked as dynamic. */
9739 if (h->dynindx == -1
9740 && !h->forced_local)
9742 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9746 if (!htab->symbian_p)
9749 h->got.offset = s->size;
9751 if (tls_type == GOT_UNKNOWN)
9754 if (tls_type == GOT_NORMAL)
9755 /* Non-TLS symbols need one GOT slot. */
9759 if (tls_type & GOT_TLS_GD)
9760 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
9762 if (tls_type & GOT_TLS_IE)
9763 /* R_ARM_TLS_IE32 needs one GOT slot. */
9767 dyn = htab->root.dynamic_sections_created;
9770 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
9772 || !SYMBOL_REFERENCES_LOCAL (info, h)))
9775 if (tls_type != GOT_NORMAL
9776 && (info->shared || indx != 0)
9777 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9778 || h->root.type != bfd_link_hash_undefweak))
9780 if (tls_type & GOT_TLS_IE)
9781 htab->srelgot->size += RELOC_SIZE (htab);
9783 if (tls_type & GOT_TLS_GD)
9784 htab->srelgot->size += RELOC_SIZE (htab);
9786 if ((tls_type & GOT_TLS_GD) && indx != 0)
9787 htab->srelgot->size += RELOC_SIZE (htab);
9789 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9790 || h->root.type != bfd_link_hash_undefweak)
9792 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
9793 htab->srelgot->size += RELOC_SIZE (htab);
9797 h->got.offset = (bfd_vma) -1;
9799 /* Allocate stubs for exported Thumb functions on v4t. */
9800 if (!htab->use_blx && h->dynindx != -1
9802 && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
9803 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
9805 struct elf_link_hash_entry * th;
9806 struct bfd_link_hash_entry * bh;
9807 struct elf_link_hash_entry * myh;
9811 /* Create a new symbol to regist the real location of the function. */
9812 s = h->root.u.def.section;
9813 sprintf (name, "__real_%s", h->root.root.string);
9814 _bfd_generic_link_add_one_symbol (info, s->owner,
9815 name, BSF_GLOBAL, s,
9816 h->root.u.def.value,
9817 NULL, TRUE, FALSE, &bh);
9819 myh = (struct elf_link_hash_entry *) bh;
9820 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
9821 myh->forced_local = 1;
9822 eh->export_glue = myh;
9823 th = record_arm_to_thumb_glue (info, h);
9824 /* Point the symbol at the stub. */
9825 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
9826 h->root.u.def.section = th->root.u.def.section;
9827 h->root.u.def.value = th->root.u.def.value & ~1;
9830 if (eh->relocs_copied == NULL)
9833 /* In the shared -Bsymbolic case, discard space allocated for
9834 dynamic pc-relative relocs against symbols which turn out to be
9835 defined in regular objects. For the normal shared case, discard
9836 space for pc-relative relocs that have become local due to symbol
9837 visibility changes. */
9839 if (info->shared || htab->root.is_relocatable_executable)
9841 /* The only relocs that use pc_count are R_ARM_REL32 and
9842 R_ARM_REL32_NOI, which will appear on something like
9843 ".long foo - .". We want calls to protected symbols to resolve
9844 directly to the function rather than going via the plt. If people
9845 want function pointer comparisons to work as expected then they
9846 should avoid writing assembly like ".long foo - .". */
9847 if (SYMBOL_CALLS_LOCAL (info, h))
9849 struct elf32_arm_relocs_copied **pp;
9851 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
9853 p->count -= p->pc_count;
9862 if (elf32_arm_hash_table (info)->vxworks_p)
9864 struct elf32_arm_relocs_copied **pp;
9866 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
9868 if (strcmp (p->section->output_section->name, ".tls_vars") == 0)
9875 /* Also discard relocs on undefined weak syms with non-default
9877 if (eh->relocs_copied != NULL
9878 && h->root.type == bfd_link_hash_undefweak)
9880 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9881 eh->relocs_copied = NULL;
9883 /* Make sure undefined weak symbols are output as a dynamic
9885 else if (h->dynindx == -1
9886 && !h->forced_local)
9888 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9893 else if (htab->root.is_relocatable_executable && h->dynindx == -1
9894 && h->root.type == bfd_link_hash_new)
9896 /* Output absolute symbols so that we can create relocations
9897 against them. For normal symbols we output a relocation
9898 against the section that contains them. */
9899 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9906 /* For the non-shared case, discard space for relocs against
9907 symbols which turn out to need copy relocs or are not
9913 || (htab->root.dynamic_sections_created
9914 && (h->root.type == bfd_link_hash_undefweak
9915 || h->root.type == bfd_link_hash_undefined))))
9917 /* Make sure this symbol is output as a dynamic symbol.
9918 Undefined weak syms won't yet be marked as dynamic. */
9919 if (h->dynindx == -1
9920 && !h->forced_local)
9922 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9926 /* If that succeeded, we know we'll be keeping all the
9928 if (h->dynindx != -1)
9932 eh->relocs_copied = NULL;
9937 /* Finally, allocate space. */
9938 for (p = eh->relocs_copied; p != NULL; p = p->next)
9940 asection *sreloc = elf_section_data (p->section)->sreloc;
9941 sreloc->size += p->count * RELOC_SIZE (htab);
9947 /* Find any dynamic relocs that apply to read-only sections. */
9950 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
9952 struct elf32_arm_link_hash_entry *eh;
9953 struct elf32_arm_relocs_copied *p;
9955 if (h->root.type == bfd_link_hash_warning)
9956 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9958 eh = (struct elf32_arm_link_hash_entry *) h;
9959 for (p = eh->relocs_copied; p != NULL; p = p->next)
9961 asection *s = p->section;
9963 if (s != NULL && (s->flags & SEC_READONLY) != 0)
9965 struct bfd_link_info *info = (struct bfd_link_info *) inf;
9967 info->flags |= DF_TEXTREL;
9969 /* Not an error, just cut short the traversal. */
9977 bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info,
9980 struct elf32_arm_link_hash_table *globals;
9982 globals = elf32_arm_hash_table (info);
9983 globals->byteswap_code = byteswap_code;
9986 /* Set the sizes of the dynamic sections. */
9989 elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
9990 struct bfd_link_info * info)
9997 struct elf32_arm_link_hash_table *htab;
9999 htab = elf32_arm_hash_table (info);
10000 dynobj = elf_hash_table (info)->dynobj;
10001 BFD_ASSERT (dynobj != NULL);
10002 check_use_blx (htab);
10004 if (elf_hash_table (info)->dynamic_sections_created)
10006 /* Set the contents of the .interp section to the interpreter. */
10007 if (info->executable)
10009 s = bfd_get_section_by_name (dynobj, ".interp");
10010 BFD_ASSERT (s != NULL);
10011 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
10012 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
10016 /* Set up .got offsets for local syms, and space for local dynamic
10018 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10020 bfd_signed_vma *local_got;
10021 bfd_signed_vma *end_local_got;
10022 char *local_tls_type;
10023 bfd_size_type locsymcount;
10024 Elf_Internal_Shdr *symtab_hdr;
10026 bfd_boolean is_vxworks = elf32_arm_hash_table (info)->vxworks_p;
10028 if (! is_arm_elf (ibfd))
10031 for (s = ibfd->sections; s != NULL; s = s->next)
10033 struct elf32_arm_relocs_copied *p;
10035 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
10037 if (!bfd_is_abs_section (p->section)
10038 && bfd_is_abs_section (p->section->output_section))
10040 /* Input section has been discarded, either because
10041 it is a copy of a linkonce section or due to
10042 linker script /DISCARD/, so we'll be discarding
10045 else if (is_vxworks
10046 && strcmp (p->section->output_section->name,
10049 /* Relocations in vxworks .tls_vars sections are
10050 handled specially by the loader. */
10052 else if (p->count != 0)
10054 srel = elf_section_data (p->section)->sreloc;
10055 srel->size += p->count * RELOC_SIZE (htab);
10056 if ((p->section->output_section->flags & SEC_READONLY) != 0)
10057 info->flags |= DF_TEXTREL;
10062 local_got = elf_local_got_refcounts (ibfd);
10066 symtab_hdr = & elf_symtab_hdr (ibfd);
10067 locsymcount = symtab_hdr->sh_info;
10068 end_local_got = local_got + locsymcount;
10069 local_tls_type = elf32_arm_local_got_tls_type (ibfd);
10071 srel = htab->srelgot;
10072 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
10074 if (*local_got > 0)
10076 *local_got = s->size;
10077 if (*local_tls_type & GOT_TLS_GD)
10078 /* TLS_GD relocs need an 8-byte structure in the GOT. */
10080 if (*local_tls_type & GOT_TLS_IE)
10082 if (*local_tls_type == GOT_NORMAL)
10085 if (info->shared || *local_tls_type == GOT_TLS_GD)
10086 srel->size += RELOC_SIZE (htab);
10089 *local_got = (bfd_vma) -1;
10093 if (htab->tls_ldm_got.refcount > 0)
10095 /* Allocate two GOT entries and one dynamic relocation (if necessary)
10096 for R_ARM_TLS_LDM32 relocations. */
10097 htab->tls_ldm_got.offset = htab->sgot->size;
10098 htab->sgot->size += 8;
10100 htab->srelgot->size += RELOC_SIZE (htab);
10103 htab->tls_ldm_got.offset = -1;
10105 /* Allocate global sym .plt and .got entries, and space for global
10106 sym dynamic relocs. */
10107 elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info);
10109 /* Here we rummage through the found bfds to collect glue information. */
10110 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10112 if (! is_arm_elf (ibfd))
10115 /* Initialise mapping tables for code/data. */
10116 bfd_elf32_arm_init_maps (ibfd);
10118 if (!bfd_elf32_arm_process_before_allocation (ibfd, info)
10119 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info))
10120 /* xgettext:c-format */
10121 _bfd_error_handler (_("Errors encountered processing file %s"),
10125 /* The check_relocs and adjust_dynamic_symbol entry points have
10126 determined the sizes of the various dynamic sections. Allocate
10127 memory for them. */
10130 for (s = dynobj->sections; s != NULL; s = s->next)
10134 if ((s->flags & SEC_LINKER_CREATED) == 0)
10137 /* It's OK to base decisions on the section name, because none
10138 of the dynobj section names depend upon the input files. */
10139 name = bfd_get_section_name (dynobj, s);
10141 if (strcmp (name, ".plt") == 0)
10143 /* Remember whether there is a PLT. */
10144 plt = s->size != 0;
10146 else if (CONST_STRNEQ (name, ".rel"))
10150 /* Remember whether there are any reloc sections other
10151 than .rel(a).plt and .rela.plt.unloaded. */
10152 if (s != htab->srelplt && s != htab->srelplt2)
10155 /* We use the reloc_count field as a counter if we need
10156 to copy relocs into the output file. */
10157 s->reloc_count = 0;
10160 else if (! CONST_STRNEQ (name, ".got")
10161 && strcmp (name, ".dynbss") != 0)
10163 /* It's not one of our sections, so don't allocate space. */
10169 /* If we don't need this section, strip it from the
10170 output file. This is mostly to handle .rel(a).bss and
10171 .rel(a).plt. We must create both sections in
10172 create_dynamic_sections, because they must be created
10173 before the linker maps input sections to output
10174 sections. The linker does that before
10175 adjust_dynamic_symbol is called, and it is that
10176 function which decides whether anything needs to go
10177 into these sections. */
10178 s->flags |= SEC_EXCLUDE;
10182 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10185 /* Allocate memory for the section contents. */
10186 s->contents = bfd_zalloc (dynobj, s->size);
10187 if (s->contents == NULL)
10191 if (elf_hash_table (info)->dynamic_sections_created)
10193 /* Add some entries to the .dynamic section. We fill in the
10194 values later, in elf32_arm_finish_dynamic_sections, but we
10195 must add the entries now so that we get the correct size for
10196 the .dynamic section. The DT_DEBUG entry is filled in by the
10197 dynamic linker and used by the debugger. */
10198 #define add_dynamic_entry(TAG, VAL) \
10199 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10201 if (info->executable)
10203 if (!add_dynamic_entry (DT_DEBUG, 0))
10209 if ( !add_dynamic_entry (DT_PLTGOT, 0)
10210 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10211 || !add_dynamic_entry (DT_PLTREL,
10212 htab->use_rel ? DT_REL : DT_RELA)
10213 || !add_dynamic_entry (DT_JMPREL, 0))
10221 if (!add_dynamic_entry (DT_REL, 0)
10222 || !add_dynamic_entry (DT_RELSZ, 0)
10223 || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab)))
10228 if (!add_dynamic_entry (DT_RELA, 0)
10229 || !add_dynamic_entry (DT_RELASZ, 0)
10230 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
10235 /* If any dynamic relocs apply to a read-only section,
10236 then we need a DT_TEXTREL entry. */
10237 if ((info->flags & DF_TEXTREL) == 0)
10238 elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs,
10241 if ((info->flags & DF_TEXTREL) != 0)
10243 if (!add_dynamic_entry (DT_TEXTREL, 0))
10246 if (htab->vxworks_p
10247 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
10250 #undef add_dynamic_entry
10255 /* Finish up dynamic symbol handling. We set the contents of various
10256 dynamic sections here. */
10259 elf32_arm_finish_dynamic_symbol (bfd * output_bfd,
10260 struct bfd_link_info * info,
10261 struct elf_link_hash_entry * h,
10262 Elf_Internal_Sym * sym)
10265 struct elf32_arm_link_hash_table *htab;
10266 struct elf32_arm_link_hash_entry *eh;
10268 dynobj = elf_hash_table (info)->dynobj;
10269 htab = elf32_arm_hash_table (info);
10270 eh = (struct elf32_arm_link_hash_entry *) h;
10272 if (h->plt.offset != (bfd_vma) -1)
10278 Elf_Internal_Rela rel;
10280 /* This symbol has an entry in the procedure linkage table. Set
10283 BFD_ASSERT (h->dynindx != -1);
10285 splt = bfd_get_section_by_name (dynobj, ".plt");
10286 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt"));
10287 BFD_ASSERT (splt != NULL && srel != NULL);
10289 /* Fill in the entry in the procedure linkage table. */
10290 if (htab->symbian_p)
10292 put_arm_insn (htab, output_bfd,
10293 elf32_arm_symbian_plt_entry[0],
10294 splt->contents + h->plt.offset);
10295 bfd_put_32 (output_bfd,
10296 elf32_arm_symbian_plt_entry[1],
10297 splt->contents + h->plt.offset + 4);
10299 /* Fill in the entry in the .rel.plt section. */
10300 rel.r_offset = (splt->output_section->vma
10301 + splt->output_offset
10302 + h->plt.offset + 4);
10303 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
10305 /* Get the index in the procedure linkage table which
10306 corresponds to this symbol. This is the index of this symbol
10307 in all the symbols for which we are making plt entries. The
10308 first entry in the procedure linkage table is reserved. */
10309 plt_index = ((h->plt.offset - htab->plt_header_size)
10310 / htab->plt_entry_size);
10314 bfd_vma got_offset, got_address, plt_address;
10315 bfd_vma got_displacement;
10319 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
10320 BFD_ASSERT (sgot != NULL);
10322 /* Get the offset into the .got.plt table of the entry that
10323 corresponds to this function. */
10324 got_offset = eh->plt_got_offset;
10326 /* Get the index in the procedure linkage table which
10327 corresponds to this symbol. This is the index of this symbol
10328 in all the symbols for which we are making plt entries. The
10329 first three entries in .got.plt are reserved; after that
10330 symbols appear in the same order as in .plt. */
10331 plt_index = (got_offset - 12) / 4;
10333 /* Calculate the address of the GOT entry. */
10334 got_address = (sgot->output_section->vma
10335 + sgot->output_offset
10338 /* ...and the address of the PLT entry. */
10339 plt_address = (splt->output_section->vma
10340 + splt->output_offset
10343 ptr = htab->splt->contents + h->plt.offset;
10344 if (htab->vxworks_p && info->shared)
10349 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
10351 val = elf32_arm_vxworks_shared_plt_entry[i];
10353 val |= got_address - sgot->output_section->vma;
10355 val |= plt_index * RELOC_SIZE (htab);
10356 if (i == 2 || i == 5)
10357 bfd_put_32 (output_bfd, val, ptr);
10359 put_arm_insn (htab, output_bfd, val, ptr);
10362 else if (htab->vxworks_p)
10367 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
10369 val = elf32_arm_vxworks_exec_plt_entry[i];
10371 val |= got_address;
10373 val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2);
10375 val |= plt_index * RELOC_SIZE (htab);
10376 if (i == 2 || i == 5)
10377 bfd_put_32 (output_bfd, val, ptr);
10379 put_arm_insn (htab, output_bfd, val, ptr);
10382 loc = (htab->srelplt2->contents
10383 + (plt_index * 2 + 1) * RELOC_SIZE (htab));
10385 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
10386 referencing the GOT for this PLT entry. */
10387 rel.r_offset = plt_address + 8;
10388 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
10389 rel.r_addend = got_offset;
10390 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
10391 loc += RELOC_SIZE (htab);
10393 /* Create the R_ARM_ABS32 relocation referencing the
10394 beginning of the PLT for this GOT entry. */
10395 rel.r_offset = got_address;
10396 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
10398 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
10402 bfd_signed_vma thumb_refs;
10403 /* Calculate the displacement between the PLT slot and the
10404 entry in the GOT. The eight-byte offset accounts for the
10405 value produced by adding to pc in the first instruction
10406 of the PLT stub. */
10407 got_displacement = got_address - (plt_address + 8);
10409 BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
10411 thumb_refs = eh->plt_thumb_refcount;
10412 if (!htab->use_blx)
10413 thumb_refs += eh->plt_maybe_thumb_refcount;
10415 if (thumb_refs > 0)
10417 put_thumb_insn (htab, output_bfd,
10418 elf32_arm_plt_thumb_stub[0], ptr - 4);
10419 put_thumb_insn (htab, output_bfd,
10420 elf32_arm_plt_thumb_stub[1], ptr - 2);
10423 put_arm_insn (htab, output_bfd,
10424 elf32_arm_plt_entry[0]
10425 | ((got_displacement & 0x0ff00000) >> 20),
10427 put_arm_insn (htab, output_bfd,
10428 elf32_arm_plt_entry[1]
10429 | ((got_displacement & 0x000ff000) >> 12),
10431 put_arm_insn (htab, output_bfd,
10432 elf32_arm_plt_entry[2]
10433 | (got_displacement & 0x00000fff),
10435 #ifdef FOUR_WORD_PLT
10436 bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12);
10440 /* Fill in the entry in the global offset table. */
10441 bfd_put_32 (output_bfd,
10442 (splt->output_section->vma
10443 + splt->output_offset),
10444 sgot->contents + got_offset);
10446 /* Fill in the entry in the .rel(a).plt section. */
10448 rel.r_offset = got_address;
10449 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
10452 loc = srel->contents + plt_index * RELOC_SIZE (htab);
10453 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
10455 if (!h->def_regular)
10457 /* Mark the symbol as undefined, rather than as defined in
10458 the .plt section. Leave the value alone. */
10459 sym->st_shndx = SHN_UNDEF;
10460 /* If the symbol is weak, we do need to clear the value.
10461 Otherwise, the PLT entry would provide a definition for
10462 the symbol even if the symbol wasn't defined anywhere,
10463 and so the symbol would never be NULL. */
10464 if (!h->ref_regular_nonweak)
10469 if (h->got.offset != (bfd_vma) -1
10470 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0
10471 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0)
10475 Elf_Internal_Rela rel;
10479 /* This symbol has an entry in the global offset table. Set it
10481 sgot = bfd_get_section_by_name (dynobj, ".got");
10482 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got"));
10483 BFD_ASSERT (sgot != NULL && srel != NULL);
10485 offset = (h->got.offset & ~(bfd_vma) 1);
10487 rel.r_offset = (sgot->output_section->vma
10488 + sgot->output_offset
10491 /* If this is a static link, or it is a -Bsymbolic link and the
10492 symbol is defined locally or was forced to be local because
10493 of a version file, we just want to emit a RELATIVE reloc.
10494 The entry in the global offset table will already have been
10495 initialized in the relocate_section function. */
10497 && SYMBOL_REFERENCES_LOCAL (info, h))
10499 BFD_ASSERT ((h->got.offset & 1) != 0);
10500 rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
10501 if (!htab->use_rel)
10503 rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
10504 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
10509 BFD_ASSERT ((h->got.offset & 1) == 0);
10510 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
10511 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
10514 loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab);
10515 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
10521 Elf_Internal_Rela rel;
10524 /* This symbol needs a copy reloc. Set it up. */
10525 BFD_ASSERT (h->dynindx != -1
10526 && (h->root.type == bfd_link_hash_defined
10527 || h->root.type == bfd_link_hash_defweak));
10529 s = bfd_get_section_by_name (h->root.u.def.section->owner,
10530 RELOC_SECTION (htab, ".bss"));
10531 BFD_ASSERT (s != NULL);
10534 rel.r_offset = (h->root.u.def.value
10535 + h->root.u.def.section->output_section->vma
10536 + h->root.u.def.section->output_offset);
10537 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
10538 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
10539 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
10542 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
10543 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
10544 to the ".got" section. */
10545 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
10546 || (!htab->vxworks_p && h == htab->root.hgot))
10547 sym->st_shndx = SHN_ABS;
10552 /* Finish up the dynamic sections. */
10555 elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
10561 dynobj = elf_hash_table (info)->dynobj;
10563 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
10564 BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL);
10565 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10567 if (elf_hash_table (info)->dynamic_sections_created)
10570 Elf32_External_Dyn *dyncon, *dynconend;
10571 struct elf32_arm_link_hash_table *htab;
10573 htab = elf32_arm_hash_table (info);
10574 splt = bfd_get_section_by_name (dynobj, ".plt");
10575 BFD_ASSERT (splt != NULL && sdyn != NULL);
10577 dyncon = (Elf32_External_Dyn *) sdyn->contents;
10578 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
10580 for (; dyncon < dynconend; dyncon++)
10582 Elf_Internal_Dyn dyn;
10586 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10593 if (htab->vxworks_p
10594 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10595 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10600 goto get_vma_if_bpabi;
10603 goto get_vma_if_bpabi;
10606 goto get_vma_if_bpabi;
10608 name = ".gnu.version";
10609 goto get_vma_if_bpabi;
10611 name = ".gnu.version_d";
10612 goto get_vma_if_bpabi;
10614 name = ".gnu.version_r";
10615 goto get_vma_if_bpabi;
10621 name = RELOC_SECTION (htab, ".plt");
10623 s = bfd_get_section_by_name (output_bfd, name);
10624 BFD_ASSERT (s != NULL);
10625 if (!htab->symbian_p)
10626 dyn.d_un.d_ptr = s->vma;
10628 /* In the BPABI, tags in the PT_DYNAMIC section point
10629 at the file offset, not the memory address, for the
10630 convenience of the post linker. */
10631 dyn.d_un.d_ptr = s->filepos;
10632 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10636 if (htab->symbian_p)
10641 s = bfd_get_section_by_name (output_bfd,
10642 RELOC_SECTION (htab, ".plt"));
10643 BFD_ASSERT (s != NULL);
10644 dyn.d_un.d_val = s->size;
10645 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10650 if (!htab->symbian_p)
10652 /* My reading of the SVR4 ABI indicates that the
10653 procedure linkage table relocs (DT_JMPREL) should be
10654 included in the overall relocs (DT_REL). This is
10655 what Solaris does. However, UnixWare can not handle
10656 that case. Therefore, we override the DT_RELSZ entry
10657 here to make it not include the JMPREL relocs. Since
10658 the linker script arranges for .rel(a).plt to follow all
10659 other relocation sections, we don't have to worry
10660 about changing the DT_REL entry. */
10661 s = bfd_get_section_by_name (output_bfd,
10662 RELOC_SECTION (htab, ".plt"));
10664 dyn.d_un.d_val -= s->size;
10665 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10672 /* In the BPABI, the DT_REL tag must point at the file
10673 offset, not the VMA, of the first relocation
10674 section. So, we use code similar to that in
10675 elflink.c, but do not check for SHF_ALLOC on the
10676 relcoation section, since relocations sections are
10677 never allocated under the BPABI. The comments above
10678 about Unixware notwithstanding, we include all of the
10679 relocations here. */
10680 if (htab->symbian_p)
10683 type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
10684 ? SHT_REL : SHT_RELA);
10685 dyn.d_un.d_val = 0;
10686 for (i = 1; i < elf_numsections (output_bfd); i++)
10688 Elf_Internal_Shdr *hdr
10689 = elf_elfsections (output_bfd)[i];
10690 if (hdr->sh_type == type)
10692 if (dyn.d_tag == DT_RELSZ
10693 || dyn.d_tag == DT_RELASZ)
10694 dyn.d_un.d_val += hdr->sh_size;
10695 else if ((ufile_ptr) hdr->sh_offset
10696 <= dyn.d_un.d_val - 1)
10697 dyn.d_un.d_val = hdr->sh_offset;
10700 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10704 /* Set the bottom bit of DT_INIT/FINI if the
10705 corresponding function is Thumb. */
10707 name = info->init_function;
10710 name = info->fini_function;
10712 /* If it wasn't set by elf_bfd_final_link
10713 then there is nothing to adjust. */
10714 if (dyn.d_un.d_val != 0)
10716 struct elf_link_hash_entry * eh;
10718 eh = elf_link_hash_lookup (elf_hash_table (info), name,
10719 FALSE, FALSE, TRUE);
10721 && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC)
10723 dyn.d_un.d_val |= 1;
10724 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10731 /* Fill in the first entry in the procedure linkage table. */
10732 if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size)
10734 const bfd_vma *plt0_entry;
10735 bfd_vma got_address, plt_address, got_displacement;
10737 /* Calculate the addresses of the GOT and PLT. */
10738 got_address = sgot->output_section->vma + sgot->output_offset;
10739 plt_address = splt->output_section->vma + splt->output_offset;
10741 if (htab->vxworks_p)
10743 /* The VxWorks GOT is relocated by the dynamic linker.
10744 Therefore, we must emit relocations rather than simply
10745 computing the values now. */
10746 Elf_Internal_Rela rel;
10748 plt0_entry = elf32_arm_vxworks_exec_plt0_entry;
10749 put_arm_insn (htab, output_bfd, plt0_entry[0],
10750 splt->contents + 0);
10751 put_arm_insn (htab, output_bfd, plt0_entry[1],
10752 splt->contents + 4);
10753 put_arm_insn (htab, output_bfd, plt0_entry[2],
10754 splt->contents + 8);
10755 bfd_put_32 (output_bfd, got_address, splt->contents + 12);
10757 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
10758 rel.r_offset = plt_address + 12;
10759 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
10761 SWAP_RELOC_OUT (htab) (output_bfd, &rel,
10762 htab->srelplt2->contents);
10766 got_displacement = got_address - (plt_address + 16);
10768 plt0_entry = elf32_arm_plt0_entry;
10769 put_arm_insn (htab, output_bfd, plt0_entry[0],
10770 splt->contents + 0);
10771 put_arm_insn (htab, output_bfd, plt0_entry[1],
10772 splt->contents + 4);
10773 put_arm_insn (htab, output_bfd, plt0_entry[2],
10774 splt->contents + 8);
10775 put_arm_insn (htab, output_bfd, plt0_entry[3],
10776 splt->contents + 12);
10778 #ifdef FOUR_WORD_PLT
10779 /* The displacement value goes in the otherwise-unused
10780 last word of the second entry. */
10781 bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
10783 bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
10788 /* UnixWare sets the entsize of .plt to 4, although that doesn't
10789 really seem like the right value. */
10790 if (splt->output_section->owner == output_bfd)
10791 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
10793 if (htab->vxworks_p && !info->shared && htab->splt->size > 0)
10795 /* Correct the .rel(a).plt.unloaded relocations. They will have
10796 incorrect symbol indexes. */
10800 num_plts = ((htab->splt->size - htab->plt_header_size)
10801 / htab->plt_entry_size);
10802 p = htab->srelplt2->contents + RELOC_SIZE (htab);
10804 for (; num_plts; num_plts--)
10806 Elf_Internal_Rela rel;
10808 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
10809 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
10810 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
10811 p += RELOC_SIZE (htab);
10813 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
10814 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
10815 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
10816 p += RELOC_SIZE (htab);
10821 /* Fill in the first three entries in the global offset table. */
10824 if (sgot->size > 0)
10827 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
10829 bfd_put_32 (output_bfd,
10830 sdyn->output_section->vma + sdyn->output_offset,
10832 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
10833 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
10836 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
10843 elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
10845 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
10846 struct elf32_arm_link_hash_table *globals;
10848 i_ehdrp = elf_elfheader (abfd);
10850 if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
10851 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
10853 i_ehdrp->e_ident[EI_OSABI] = 0;
10854 i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
10858 globals = elf32_arm_hash_table (link_info);
10859 if (globals->byteswap_code)
10860 i_ehdrp->e_flags |= EF_ARM_BE8;
10864 static enum elf_reloc_type_class
10865 elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
10867 switch ((int) ELF32_R_TYPE (rela->r_info))
10869 case R_ARM_RELATIVE:
10870 return reloc_class_relative;
10871 case R_ARM_JUMP_SLOT:
10872 return reloc_class_plt;
10874 return reloc_class_copy;
10876 return reloc_class_normal;
10880 /* Set the right machine number for an Arm ELF file. */
10883 elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
10885 if (hdr->sh_type == SHT_NOTE)
10886 *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
10892 elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
10894 bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
10897 /* Return TRUE if this is an unwinding table entry. */
10900 is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
10902 return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind)
10903 || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once));
10907 /* Set the type and flags for an ARM section. We do this by
10908 the section name, which is a hack, but ought to work. */
10911 elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
10915 name = bfd_get_section_name (abfd, sec);
10917 if (is_arm_elf_unwind_section_name (abfd, name))
10919 hdr->sh_type = SHT_ARM_EXIDX;
10920 hdr->sh_flags |= SHF_LINK_ORDER;
10925 /* Handle an ARM specific section when reading an object file. This is
10926 called when bfd_section_from_shdr finds a section with an unknown
10930 elf32_arm_section_from_shdr (bfd *abfd,
10931 Elf_Internal_Shdr * hdr,
10935 /* There ought to be a place to keep ELF backend specific flags, but
10936 at the moment there isn't one. We just keep track of the
10937 sections by their name, instead. Fortunately, the ABI gives
10938 names for all the ARM specific sections, so we will probably get
10940 switch (hdr->sh_type)
10942 case SHT_ARM_EXIDX:
10943 case SHT_ARM_PREEMPTMAP:
10944 case SHT_ARM_ATTRIBUTES:
10951 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
10957 /* A structure used to record a list of sections, independently
10958 of the next and prev fields in the asection structure. */
10959 typedef struct section_list
10962 struct section_list * next;
10963 struct section_list * prev;
10967 /* Unfortunately we need to keep a list of sections for which
10968 an _arm_elf_section_data structure has been allocated. This
10969 is because it is possible for functions like elf32_arm_write_section
10970 to be called on a section which has had an elf_data_structure
10971 allocated for it (and so the used_by_bfd field is valid) but
10972 for which the ARM extended version of this structure - the
10973 _arm_elf_section_data structure - has not been allocated. */
10974 static section_list * sections_with_arm_elf_section_data = NULL;
10977 record_section_with_arm_elf_section_data (asection * sec)
10979 struct section_list * entry;
10981 entry = bfd_malloc (sizeof (* entry));
10985 entry->next = sections_with_arm_elf_section_data;
10986 entry->prev = NULL;
10987 if (entry->next != NULL)
10988 entry->next->prev = entry;
10989 sections_with_arm_elf_section_data = entry;
10992 static struct section_list *
10993 find_arm_elf_section_entry (asection * sec)
10995 struct section_list * entry;
10996 static struct section_list * last_entry = NULL;
10998 /* This is a short cut for the typical case where the sections are added
10999 to the sections_with_arm_elf_section_data list in forward order and
11000 then looked up here in backwards order. This makes a real difference
11001 to the ld-srec/sec64k.exp linker test. */
11002 entry = sections_with_arm_elf_section_data;
11003 if (last_entry != NULL)
11005 if (last_entry->sec == sec)
11006 entry = last_entry;
11007 else if (last_entry->next != NULL
11008 && last_entry->next->sec == sec)
11009 entry = last_entry->next;
11012 for (; entry; entry = entry->next)
11013 if (entry->sec == sec)
11017 /* Record the entry prior to this one - it is the entry we are most
11018 likely to want to locate next time. Also this way if we have been
11019 called from unrecord_section_with_arm_elf_section_data() we will not
11020 be caching a pointer that is about to be freed. */
11021 last_entry = entry->prev;
11026 static _arm_elf_section_data *
11027 get_arm_elf_section_data (asection * sec)
11029 struct section_list * entry;
11031 entry = find_arm_elf_section_entry (sec);
11034 return elf32_arm_section_data (entry->sec);
11040 unrecord_section_with_arm_elf_section_data (asection * sec)
11042 struct section_list * entry;
11044 entry = find_arm_elf_section_entry (sec);
11048 if (entry->prev != NULL)
11049 entry->prev->next = entry->next;
11050 if (entry->next != NULL)
11051 entry->next->prev = entry->prev;
11052 if (entry == sections_with_arm_elf_section_data)
11053 sections_with_arm_elf_section_data = entry->next;
11062 struct bfd_link_info *info;
11065 bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *,
11066 asection *, struct elf_link_hash_entry *);
11067 } output_arch_syminfo;
11069 enum map_symbol_type
11077 /* Output a single mapping symbol. */
11080 elf32_arm_output_map_sym (output_arch_syminfo *osi,
11081 enum map_symbol_type type,
11084 static const char *names[3] = {"$a", "$t", "$d"};
11085 struct elf32_arm_link_hash_table *htab;
11086 Elf_Internal_Sym sym;
11088 htab = elf32_arm_hash_table (osi->info);
11089 sym.st_value = osi->sec->output_section->vma
11090 + osi->sec->output_offset
11094 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
11095 sym.st_shndx = osi->sec_shndx;
11096 if (!osi->func (osi->finfo, names[type], &sym, osi->sec, NULL))
11102 /* Output mapping symbols for PLT entries associated with H. */
11105 elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf)
11107 output_arch_syminfo *osi = (output_arch_syminfo *) inf;
11108 struct elf32_arm_link_hash_table *htab;
11109 struct elf32_arm_link_hash_entry *eh;
11112 htab = elf32_arm_hash_table (osi->info);
11114 if (h->root.type == bfd_link_hash_indirect)
11117 if (h->root.type == bfd_link_hash_warning)
11118 /* When warning symbols are created, they **replace** the "real"
11119 entry in the hash table, thus we never get to see the real
11120 symbol in a hash traversal. So look at it now. */
11121 h = (struct elf_link_hash_entry *) h->root.u.i.link;
11123 if (h->plt.offset == (bfd_vma) -1)
11126 eh = (struct elf32_arm_link_hash_entry *) h;
11127 addr = h->plt.offset;
11128 if (htab->symbian_p)
11130 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11132 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4))
11135 else if (htab->vxworks_p)
11137 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11139 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
11141 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 12))
11143 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 20))
11148 bfd_signed_vma thumb_refs;
11150 thumb_refs = eh->plt_thumb_refcount;
11151 if (!htab->use_blx)
11152 thumb_refs += eh->plt_maybe_thumb_refcount;
11154 if (thumb_refs > 0)
11156 if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr - 4))
11159 #ifdef FOUR_WORD_PLT
11160 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11162 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12))
11165 /* A three-word PLT with no Thumb thunk contains only Arm code,
11166 so only need to output a mapping symbol for the first PLT entry and
11167 entries with thumb thunks. */
11168 if (thumb_refs > 0 || addr == 20)
11170 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11179 /* Output a single local symbol for a generated stub. */
11182 elf32_arm_output_stub_sym (output_arch_syminfo *osi, const char *name,
11183 bfd_vma offset, bfd_vma size)
11185 struct elf32_arm_link_hash_table *htab;
11186 Elf_Internal_Sym sym;
11188 htab = elf32_arm_hash_table (osi->info);
11189 sym.st_value = osi->sec->output_section->vma
11190 + osi->sec->output_offset
11192 sym.st_size = size;
11194 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
11195 sym.st_shndx = osi->sec_shndx;
11196 if (!osi->func (osi->finfo, name, &sym, osi->sec, NULL))
11202 arm_map_one_stub (struct bfd_hash_entry *gen_entry,
11205 struct elf32_arm_stub_hash_entry *stub_entry;
11206 struct bfd_link_info *info;
11207 struct elf32_arm_link_hash_table *htab;
11208 asection *stub_sec;
11212 /* Massage our args to the form they really have. */
11213 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
11215 output_arch_syminfo *osi = (output_arch_syminfo *) in_arg;
11218 htab = elf32_arm_hash_table (info);
11219 stub_sec = stub_entry->stub_sec;
11221 /* Ensure this stub is attached to the current section being
11223 if (stub_sec != osi->sec)
11226 addr = (bfd_vma) stub_entry->stub_offset;
11227 stub_name = stub_entry->output_name;
11229 switch (stub_entry->stub_type)
11231 case arm_stub_long_branch:
11232 if (!elf32_arm_output_stub_sym (osi, stub_name, addr, 8))
11234 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11236 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4))
11239 case arm_thumb_v4t_stub_long_branch:
11240 if (!elf32_arm_output_stub_sym (osi, stub_name, addr, 12))
11242 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11244 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
11247 case arm_thumb_thumb_stub_long_branch:
11248 if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, 16))
11250 if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr))
11252 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12))
11255 case arm_thumb_arm_v4t_stub_long_branch:
11256 if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, 20))
11258 if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr))
11260 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 8))
11262 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 16))
11265 case arm_stub_pic_long_branch:
11266 if (!elf32_arm_output_stub_sym (osi, stub_name, addr, 12))
11268 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11270 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
11280 /* Output mapping symbols for linker generated sections. */
11283 elf32_arm_output_arch_local_syms (bfd *output_bfd,
11284 struct bfd_link_info *info,
11286 bfd_boolean (*func) (void *, const char *,
11287 Elf_Internal_Sym *,
11289 struct elf_link_hash_entry *))
11291 output_arch_syminfo osi;
11292 struct elf32_arm_link_hash_table *htab;
11294 bfd_size_type size;
11296 htab = elf32_arm_hash_table (info);
11297 check_use_blx (htab);
11303 /* ARM->Thumb glue. */
11304 if (htab->arm_glue_size > 0)
11306 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11307 ARM2THUMB_GLUE_SECTION_NAME);
11309 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11310 (output_bfd, osi.sec->output_section);
11311 if (info->shared || htab->root.is_relocatable_executable
11312 || htab->pic_veneer)
11313 size = ARM2THUMB_PIC_GLUE_SIZE;
11314 else if (htab->use_blx)
11315 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
11317 size = ARM2THUMB_STATIC_GLUE_SIZE;
11319 for (offset = 0; offset < htab->arm_glue_size; offset += size)
11321 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset);
11322 elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, offset + size - 4);
11326 /* Thumb->ARM glue. */
11327 if (htab->thumb_glue_size > 0)
11329 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11330 THUMB2ARM_GLUE_SECTION_NAME);
11332 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11333 (output_bfd, osi.sec->output_section);
11334 size = THUMB2ARM_GLUE_SIZE;
11336 for (offset = 0; offset < htab->thumb_glue_size; offset += size)
11338 elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, offset);
11339 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset + 4);
11343 /* ARMv4 BX veneers. */
11344 if (htab->bx_glue_size > 0)
11346 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11347 ARM_BX_GLUE_SECTION_NAME);
11349 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11350 (output_bfd, osi.sec->output_section);
11352 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0);
11355 /* Long calls stubs. */
11356 if (htab->stub_bfd && htab->stub_bfd->sections) {
11357 asection* stub_sec;
11358 for (stub_sec = htab->stub_bfd->sections;
11360 stub_sec = stub_sec->next) {
11362 /* Ignore non-stub sections */
11363 if (!strstr(stub_sec->name, STUB_SUFFIX))
11366 osi.sec = stub_sec;
11368 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11369 (output_bfd, osi.sec->output_section);
11371 bfd_hash_traverse (&htab->stub_hash_table, arm_map_one_stub, &osi);
11375 /* Finally, output mapping symbols for the PLT. */
11376 if (!htab->splt || htab->splt->size == 0)
11379 osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
11380 htab->splt->output_section);
11381 osi.sec = htab->splt;
11382 /* Output mapping symbols for the plt header. SymbianOS does not have a
11384 if (htab->vxworks_p)
11386 /* VxWorks shared libraries have no PLT header. */
11389 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
11391 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12))
11395 else if (!htab->symbian_p)
11397 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
11399 #ifndef FOUR_WORD_PLT
11400 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 16))
11405 elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi);
11409 /* Allocate target specific section data. */
11412 elf32_arm_new_section_hook (bfd *abfd, asection *sec)
11414 if (!sec->used_by_bfd)
11416 _arm_elf_section_data *sdata;
11417 bfd_size_type amt = sizeof (*sdata);
11419 sdata = bfd_zalloc (abfd, amt);
11422 sec->used_by_bfd = sdata;
11425 record_section_with_arm_elf_section_data (sec);
11427 return _bfd_elf_new_section_hook (abfd, sec);
11431 /* Used to order a list of mapping symbols by address. */
11434 elf32_arm_compare_mapping (const void * a, const void * b)
11436 const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a;
11437 const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b;
11439 if (amap->vma > bmap->vma)
11441 else if (amap->vma < bmap->vma)
11443 else if (amap->type > bmap->type)
11444 /* Ensure results do not depend on the host qsort for objects with
11445 multiple mapping symbols at the same address by sorting on type
11448 else if (amap->type < bmap->type)
11455 /* Do code byteswapping. Return FALSE afterwards so that the section is
11456 written out as normal. */
11459 elf32_arm_write_section (bfd *output_bfd,
11460 struct bfd_link_info *link_info, asection *sec,
11461 bfd_byte *contents)
11463 int mapcount, errcount;
11464 _arm_elf_section_data *arm_data;
11465 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
11466 elf32_arm_section_map *map;
11467 elf32_vfp11_erratum_list *errnode;
11470 bfd_vma offset = sec->output_section->vma + sec->output_offset;
11474 /* If this section has not been allocated an _arm_elf_section_data
11475 structure then we cannot record anything. */
11476 arm_data = get_arm_elf_section_data (sec);
11477 if (arm_data == NULL)
11480 mapcount = arm_data->mapcount;
11481 map = arm_data->map;
11482 errcount = arm_data->erratumcount;
11486 unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0;
11488 for (errnode = arm_data->erratumlist; errnode != 0;
11489 errnode = errnode->next)
11491 bfd_vma index = errnode->vma - offset;
11493 switch (errnode->type)
11495 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
11497 bfd_vma branch_to_veneer;
11498 /* Original condition code of instruction, plus bit mask for
11499 ARM B instruction. */
11500 unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000)
11503 /* The instruction is before the label. */
11506 /* Above offset included in -4 below. */
11507 branch_to_veneer = errnode->u.b.veneer->vma
11508 - errnode->vma - 4;
11510 if ((signed) branch_to_veneer < -(1 << 25)
11511 || (signed) branch_to_veneer >= (1 << 25))
11512 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
11513 "range"), output_bfd);
11515 insn |= (branch_to_veneer >> 2) & 0xffffff;
11516 contents[endianflip ^ index] = insn & 0xff;
11517 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
11518 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
11519 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
11523 case VFP11_ERRATUM_ARM_VENEER:
11525 bfd_vma branch_from_veneer;
11528 /* Take size of veneer into account. */
11529 branch_from_veneer = errnode->u.v.branch->vma
11530 - errnode->vma - 12;
11532 if ((signed) branch_from_veneer < -(1 << 25)
11533 || (signed) branch_from_veneer >= (1 << 25))
11534 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
11535 "range"), output_bfd);
11537 /* Original instruction. */
11538 insn = errnode->u.v.branch->u.b.vfp_insn;
11539 contents[endianflip ^ index] = insn & 0xff;
11540 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
11541 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
11542 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
11544 /* Branch back to insn after original insn. */
11545 insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff);
11546 contents[endianflip ^ (index + 4)] = insn & 0xff;
11547 contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff;
11548 contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff;
11549 contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff;
11562 if (globals->byteswap_code)
11564 qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
11567 for (i = 0; i < mapcount; i++)
11569 if (i == mapcount - 1)
11572 end = map[i + 1].vma;
11574 switch (map[i].type)
11577 /* Byte swap code words. */
11578 while (ptr + 3 < end)
11580 tmp = contents[ptr];
11581 contents[ptr] = contents[ptr + 3];
11582 contents[ptr + 3] = tmp;
11583 tmp = contents[ptr + 1];
11584 contents[ptr + 1] = contents[ptr + 2];
11585 contents[ptr + 2] = tmp;
11591 /* Byte swap code halfwords. */
11592 while (ptr + 1 < end)
11594 tmp = contents[ptr];
11595 contents[ptr] = contents[ptr + 1];
11596 contents[ptr + 1] = tmp;
11602 /* Leave data alone. */
11610 arm_data->mapcount = 0;
11611 arm_data->mapsize = 0;
11612 arm_data->map = NULL;
11613 unrecord_section_with_arm_elf_section_data (sec);
11619 unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED,
11621 void * ignore ATTRIBUTE_UNUSED)
11623 unrecord_section_with_arm_elf_section_data (sec);
11627 elf32_arm_close_and_cleanup (bfd * abfd)
11629 if (abfd->sections)
11630 bfd_map_over_sections (abfd,
11631 unrecord_section_via_map_over_sections,
11634 return _bfd_elf_close_and_cleanup (abfd);
11638 elf32_arm_bfd_free_cached_info (bfd * abfd)
11640 if (abfd->sections)
11641 bfd_map_over_sections (abfd,
11642 unrecord_section_via_map_over_sections,
11645 return _bfd_free_cached_info (abfd);
11648 /* Display STT_ARM_TFUNC symbols as functions. */
11651 elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
11654 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
11656 if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC)
11657 elfsym->symbol.flags |= BSF_FUNCTION;
11661 /* Mangle thumb function symbols as we read them in. */
11664 elf32_arm_swap_symbol_in (bfd * abfd,
11667 Elf_Internal_Sym *dst)
11669 if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
11672 /* New EABI objects mark thumb function symbols by setting the low bit of
11673 the address. Turn these into STT_ARM_TFUNC. */
11674 if (ELF_ST_TYPE (dst->st_info) == STT_FUNC
11675 && (dst->st_value & 1))
11677 dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
11678 dst->st_value &= ~(bfd_vma) 1;
11684 /* Mangle thumb function symbols as we write them out. */
11687 elf32_arm_swap_symbol_out (bfd *abfd,
11688 const Elf_Internal_Sym *src,
11692 Elf_Internal_Sym newsym;
11694 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
11695 of the address set, as per the new EABI. We do this unconditionally
11696 because objcopy does not set the elf header flags until after
11697 it writes out the symbol table. */
11698 if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC)
11701 newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
11702 if (newsym.st_shndx != SHN_UNDEF)
11704 /* Do this only for defined symbols. At link type, the static
11705 linker will simulate the work of dynamic linker of resolving
11706 symbols and will carry over the thumbness of found symbols to
11707 the output symbol table. It's not clear how it happens, but
11708 the thumbness of undefined symbols can well be different at
11709 runtime, and writing '1' for them will be confusing for users
11710 and possibly for dynamic linker itself.
11712 newsym.st_value |= 1;
11717 bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
11720 /* Add the PT_ARM_EXIDX program header. */
11723 elf32_arm_modify_segment_map (bfd *abfd,
11724 struct bfd_link_info *info ATTRIBUTE_UNUSED)
11726 struct elf_segment_map *m;
11729 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
11730 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
11732 /* If there is already a PT_ARM_EXIDX header, then we do not
11733 want to add another one. This situation arises when running
11734 "strip"; the input binary already has the header. */
11735 m = elf_tdata (abfd)->segment_map;
11736 while (m && m->p_type != PT_ARM_EXIDX)
11740 m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
11743 m->p_type = PT_ARM_EXIDX;
11745 m->sections[0] = sec;
11747 m->next = elf_tdata (abfd)->segment_map;
11748 elf_tdata (abfd)->segment_map = m;
11755 /* We may add a PT_ARM_EXIDX program header. */
11758 elf32_arm_additional_program_headers (bfd *abfd,
11759 struct bfd_link_info *info ATTRIBUTE_UNUSED)
11763 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
11764 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
11770 /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
11773 elf32_arm_is_function_type (unsigned int type)
11775 return (type == STT_FUNC) || (type == STT_ARM_TFUNC);
11778 /* We use this to override swap_symbol_in and swap_symbol_out. */
11779 const struct elf_size_info elf32_arm_size_info =
11781 sizeof (Elf32_External_Ehdr),
11782 sizeof (Elf32_External_Phdr),
11783 sizeof (Elf32_External_Shdr),
11784 sizeof (Elf32_External_Rel),
11785 sizeof (Elf32_External_Rela),
11786 sizeof (Elf32_External_Sym),
11787 sizeof (Elf32_External_Dyn),
11788 sizeof (Elf_External_Note),
11792 ELFCLASS32, EV_CURRENT,
11793 bfd_elf32_write_out_phdrs,
11794 bfd_elf32_write_shdrs_and_ehdr,
11795 bfd_elf32_checksum_contents,
11796 bfd_elf32_write_relocs,
11797 elf32_arm_swap_symbol_in,
11798 elf32_arm_swap_symbol_out,
11799 bfd_elf32_slurp_reloc_table,
11800 bfd_elf32_slurp_symbol_table,
11801 bfd_elf32_swap_dyn_in,
11802 bfd_elf32_swap_dyn_out,
11803 bfd_elf32_swap_reloc_in,
11804 bfd_elf32_swap_reloc_out,
11805 bfd_elf32_swap_reloca_in,
11806 bfd_elf32_swap_reloca_out
11809 #define ELF_ARCH bfd_arch_arm
11810 #define ELF_MACHINE_CODE EM_ARM
11811 #ifdef __QNXTARGET__
11812 #define ELF_MAXPAGESIZE 0x1000
11814 #define ELF_MAXPAGESIZE 0x8000
11816 #define ELF_MINPAGESIZE 0x1000
11817 #define ELF_COMMONPAGESIZE 0x1000
11819 #define bfd_elf32_mkobject elf32_arm_mkobject
11821 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
11822 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
11823 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
11824 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
11825 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
11826 #define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free
11827 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
11828 #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
11829 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
11830 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
11831 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
11832 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
11833 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
11834 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
11836 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
11837 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
11838 #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
11839 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
11840 #define elf_backend_check_relocs elf32_arm_check_relocs
11841 #define elf_backend_relocate_section elf32_arm_relocate_section
11842 #define elf_backend_write_section elf32_arm_write_section
11843 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
11844 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
11845 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
11846 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
11847 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
11848 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
11849 #define elf_backend_post_process_headers elf32_arm_post_process_headers
11850 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
11851 #define elf_backend_object_p elf32_arm_object_p
11852 #define elf_backend_section_flags elf32_arm_section_flags
11853 #define elf_backend_fake_sections elf32_arm_fake_sections
11854 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
11855 #define elf_backend_final_write_processing elf32_arm_final_write_processing
11856 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
11857 #define elf_backend_symbol_processing elf32_arm_symbol_processing
11858 #define elf_backend_size_info elf32_arm_size_info
11859 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
11860 #define elf_backend_additional_program_headers elf32_arm_additional_program_headers
11861 #define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms
11862 #define elf_backend_begin_write_processing elf32_arm_begin_write_processing
11863 #define elf_backend_is_function_type elf32_arm_is_function_type
11865 #define elf_backend_can_refcount 1
11866 #define elf_backend_can_gc_sections 1
11867 #define elf_backend_plt_readonly 1
11868 #define elf_backend_want_got_plt 1
11869 #define elf_backend_want_plt_sym 0
11870 #define elf_backend_may_use_rel_p 1
11871 #define elf_backend_may_use_rela_p 0
11872 #define elf_backend_default_use_rela_p 0
11874 #define elf_backend_got_header_size 12
11876 #undef elf_backend_obj_attrs_vendor
11877 #define elf_backend_obj_attrs_vendor "aeabi"
11878 #undef elf_backend_obj_attrs_section
11879 #define elf_backend_obj_attrs_section ".ARM.attributes"
11880 #undef elf_backend_obj_attrs_arg_type
11881 #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
11882 #undef elf_backend_obj_attrs_section_type
11883 #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
11885 #include "elf32-target.h"
11887 /* VxWorks Targets. */
11889 #undef TARGET_LITTLE_SYM
11890 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
11891 #undef TARGET_LITTLE_NAME
11892 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
11893 #undef TARGET_BIG_SYM
11894 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
11895 #undef TARGET_BIG_NAME
11896 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
11898 /* Like elf32_arm_link_hash_table_create -- but overrides
11899 appropriately for VxWorks. */
11901 static struct bfd_link_hash_table *
11902 elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
11904 struct bfd_link_hash_table *ret;
11906 ret = elf32_arm_link_hash_table_create (abfd);
11909 struct elf32_arm_link_hash_table *htab
11910 = (struct elf32_arm_link_hash_table *) ret;
11912 htab->vxworks_p = 1;
11918 elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
11920 elf32_arm_final_write_processing (abfd, linker);
11921 elf_vxworks_final_write_processing (abfd, linker);
11925 #define elf32_bed elf32_arm_vxworks_bed
11927 #undef bfd_elf32_bfd_link_hash_table_create
11928 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create
11929 #undef elf_backend_add_symbol_hook
11930 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
11931 #undef elf_backend_final_write_processing
11932 #define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing
11933 #undef elf_backend_emit_relocs
11934 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
11936 #undef elf_backend_may_use_rel_p
11937 #define elf_backend_may_use_rel_p 0
11938 #undef elf_backend_may_use_rela_p
11939 #define elf_backend_may_use_rela_p 1
11940 #undef elf_backend_default_use_rela_p
11941 #define elf_backend_default_use_rela_p 1
11942 #undef elf_backend_want_plt_sym
11943 #define elf_backend_want_plt_sym 1
11944 #undef ELF_MAXPAGESIZE
11945 #define ELF_MAXPAGESIZE 0x1000
11947 #include "elf32-target.h"
11950 /* Symbian OS Targets. */
11952 #undef TARGET_LITTLE_SYM
11953 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
11954 #undef TARGET_LITTLE_NAME
11955 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
11956 #undef TARGET_BIG_SYM
11957 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
11958 #undef TARGET_BIG_NAME
11959 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
11961 /* Like elf32_arm_link_hash_table_create -- but overrides
11962 appropriately for Symbian OS. */
11964 static struct bfd_link_hash_table *
11965 elf32_arm_symbian_link_hash_table_create (bfd *abfd)
11967 struct bfd_link_hash_table *ret;
11969 ret = elf32_arm_link_hash_table_create (abfd);
11972 struct elf32_arm_link_hash_table *htab
11973 = (struct elf32_arm_link_hash_table *)ret;
11974 /* There is no PLT header for Symbian OS. */
11975 htab->plt_header_size = 0;
11976 /* The PLT entries are each one instruction and one word. */
11977 htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry);
11978 htab->symbian_p = 1;
11979 /* Symbian uses armv5t or above, so use_blx is always true. */
11981 htab->root.is_relocatable_executable = 1;
11986 static const struct bfd_elf_special_section
11987 elf32_arm_symbian_special_sections[] =
11989 /* In a BPABI executable, the dynamic linking sections do not go in
11990 the loadable read-only segment. The post-linker may wish to
11991 refer to these sections, but they are not part of the final
11993 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 },
11994 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 },
11995 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 },
11996 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 },
11997 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 },
11998 /* These sections do not need to be writable as the SymbianOS
11999 postlinker will arrange things so that no dynamic relocation is
12001 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC },
12002 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC },
12003 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
12004 { NULL, 0, 0, 0, 0 }
12008 elf32_arm_symbian_begin_write_processing (bfd *abfd,
12009 struct bfd_link_info *link_info)
12011 /* BPABI objects are never loaded directly by an OS kernel; they are
12012 processed by a postlinker first, into an OS-specific format. If
12013 the D_PAGED bit is set on the file, BFD will align segments on
12014 page boundaries, so that an OS can directly map the file. With
12015 BPABI objects, that just results in wasted space. In addition,
12016 because we clear the D_PAGED bit, map_sections_to_segments will
12017 recognize that the program headers should not be mapped into any
12018 loadable segment. */
12019 abfd->flags &= ~D_PAGED;
12020 elf32_arm_begin_write_processing (abfd, link_info);
12024 elf32_arm_symbian_modify_segment_map (bfd *abfd,
12025 struct bfd_link_info *info)
12027 struct elf_segment_map *m;
12030 /* BPABI shared libraries and executables should have a PT_DYNAMIC
12031 segment. However, because the .dynamic section is not marked
12032 with SEC_LOAD, the generic ELF code will not create such a
12034 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
12037 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
12038 if (m->p_type == PT_DYNAMIC)
12043 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
12044 m->next = elf_tdata (abfd)->segment_map;
12045 elf_tdata (abfd)->segment_map = m;
12049 /* Also call the generic arm routine. */
12050 return elf32_arm_modify_segment_map (abfd, info);
12053 /* Return address for Ith PLT stub in section PLT, for relocation REL
12054 or (bfd_vma) -1 if it should not be included. */
12057 elf32_arm_symbian_plt_sym_val (bfd_vma i, const asection *plt,
12058 const arelent *rel ATTRIBUTE_UNUSED)
12060 return plt->vma + 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry) * i;
12065 #define elf32_bed elf32_arm_symbian_bed
12067 /* The dynamic sections are not allocated on SymbianOS; the postlinker
12068 will process them and then discard them. */
12069 #undef ELF_DYNAMIC_SEC_FLAGS
12070 #define ELF_DYNAMIC_SEC_FLAGS \
12071 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
12073 #undef elf_backend_add_symbol_hook
12074 #undef elf_backend_emit_relocs
12076 #undef bfd_elf32_bfd_link_hash_table_create
12077 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create
12078 #undef elf_backend_special_sections
12079 #define elf_backend_special_sections elf32_arm_symbian_special_sections
12080 #undef elf_backend_begin_write_processing
12081 #define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing
12082 #undef elf_backend_final_write_processing
12083 #define elf_backend_final_write_processing elf32_arm_final_write_processing
12085 #undef elf_backend_modify_segment_map
12086 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
12088 /* There is no .got section for BPABI objects, and hence no header. */
12089 #undef elf_backend_got_header_size
12090 #define elf_backend_got_header_size 0
12092 /* Similarly, there is no .got.plt section. */
12093 #undef elf_backend_want_got_plt
12094 #define elf_backend_want_got_plt 0
12096 #undef elf_backend_plt_sym_val
12097 #define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val
12099 #undef elf_backend_may_use_rel_p
12100 #define elf_backend_may_use_rel_p 1
12101 #undef elf_backend_may_use_rela_p
12102 #define elf_backend_may_use_rela_p 0
12103 #undef elf_backend_default_use_rela_p
12104 #define elf_backend_default_use_rela_p 0
12105 #undef elf_backend_want_plt_sym
12106 #define elf_backend_want_plt_sym 0
12107 #undef ELF_MAXPAGESIZE
12108 #define ELF_MAXPAGESIZE 0x8000
12110 #include "elf32-target.h"
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