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)
1782 for (i = 0; i < ARRAY_SIZE (elf32_arm_reloc_map); i ++)
1783 if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
1784 return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
1789 static reloc_howto_type *
1790 elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1795 for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_1); i++)
1796 if (elf32_arm_howto_table_1[i].name != NULL
1797 && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0)
1798 return &elf32_arm_howto_table_1[i];
1800 for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_2); i++)
1801 if (elf32_arm_howto_table_2[i].name != NULL
1802 && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0)
1803 return &elf32_arm_howto_table_2[i];
1808 /* Support for core dump NOTE sections. */
1811 elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1816 switch (note->descsz)
1821 case 148: /* Linux/ARM 32-bit. */
1823 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1826 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1835 /* Make a ".reg/999" section. */
1836 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1837 size, note->descpos + offset);
1841 elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1843 switch (note->descsz)
1848 case 124: /* Linux/ARM elf_prpsinfo. */
1849 elf_tdata (abfd)->core_program
1850 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1851 elf_tdata (abfd)->core_command
1852 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1855 /* Note that for some reason, a spurious space is tacked
1856 onto the end of the args in some (at least one anyway)
1857 implementations, so strip it off if it exists. */
1859 char *command = elf_tdata (abfd)->core_command;
1860 int n = strlen (command);
1862 if (0 < n && command[n - 1] == ' ')
1863 command[n - 1] = '\0';
1869 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1870 #define TARGET_LITTLE_NAME "elf32-littlearm"
1871 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1872 #define TARGET_BIG_NAME "elf32-bigarm"
1874 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1875 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1877 typedef unsigned long int insn32;
1878 typedef unsigned short int insn16;
1880 /* In lieu of proper flags, assume all EABIv4 or later objects are
1882 #define INTERWORK_FLAG(abfd) \
1883 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1884 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1886 /* The linker script knows the section names for placement.
1887 The entry_names are used to do simple name mangling on the stubs.
1888 Given a function name, and its type, the stub can be found. The
1889 name can be changed. The only requirement is the %s be present. */
1890 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1891 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1893 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1894 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1896 #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1897 #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1899 #define ARM_BX_GLUE_SECTION_NAME ".v4_bx"
1900 #define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d"
1902 #define STUB_ENTRY_NAME "__%s_veneer"
1904 /* The name of the dynamic interpreter. This is put in the .interp
1906 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1908 #ifdef FOUR_WORD_PLT
1910 /* The first entry in a procedure linkage table looks like
1911 this. It is set up so that any shared library function that is
1912 called before the relocation has been set up calls the dynamic
1914 static const bfd_vma elf32_arm_plt0_entry [] =
1916 0xe52de004, /* str lr, [sp, #-4]! */
1917 0xe59fe010, /* ldr lr, [pc, #16] */
1918 0xe08fe00e, /* add lr, pc, lr */
1919 0xe5bef008, /* ldr pc, [lr, #8]! */
1922 /* Subsequent entries in a procedure linkage table look like
1924 static const bfd_vma elf32_arm_plt_entry [] =
1926 0xe28fc600, /* add ip, pc, #NN */
1927 0xe28cca00, /* add ip, ip, #NN */
1928 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1929 0x00000000, /* unused */
1934 /* The first entry in a procedure linkage table looks like
1935 this. It is set up so that any shared library function that is
1936 called before the relocation has been set up calls the dynamic
1938 static const bfd_vma elf32_arm_plt0_entry [] =
1940 0xe52de004, /* str lr, [sp, #-4]! */
1941 0xe59fe004, /* ldr lr, [pc, #4] */
1942 0xe08fe00e, /* add lr, pc, lr */
1943 0xe5bef008, /* ldr pc, [lr, #8]! */
1944 0x00000000, /* &GOT[0] - . */
1947 /* Subsequent entries in a procedure linkage table look like
1949 static const bfd_vma elf32_arm_plt_entry [] =
1951 0xe28fc600, /* add ip, pc, #0xNN00000 */
1952 0xe28cca00, /* add ip, ip, #0xNN000 */
1953 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1958 /* The format of the first entry in the procedure linkage table
1959 for a VxWorks executable. */
1960 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] =
1962 0xe52dc008, /* str ip,[sp,#-8]! */
1963 0xe59fc000, /* ldr ip,[pc] */
1964 0xe59cf008, /* ldr pc,[ip,#8] */
1965 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1968 /* The format of subsequent entries in a VxWorks executable. */
1969 static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] =
1971 0xe59fc000, /* ldr ip,[pc] */
1972 0xe59cf000, /* ldr pc,[ip] */
1973 0x00000000, /* .long @got */
1974 0xe59fc000, /* ldr ip,[pc] */
1975 0xea000000, /* b _PLT */
1976 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1979 /* The format of entries in a VxWorks shared library. */
1980 static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] =
1982 0xe59fc000, /* ldr ip,[pc] */
1983 0xe79cf009, /* ldr pc,[ip,r9] */
1984 0x00000000, /* .long @got */
1985 0xe59fc000, /* ldr ip,[pc] */
1986 0xe599f008, /* ldr pc,[r9,#8] */
1987 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1990 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1991 #define PLT_THUMB_STUB_SIZE 4
1992 static const bfd_vma elf32_arm_plt_thumb_stub [] =
1998 /* The entries in a PLT when using a DLL-based target with multiple
2000 static const bfd_vma elf32_arm_symbian_plt_entry [] =
2002 0xe51ff004, /* ldr pc, [pc, #-4] */
2003 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2006 #define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8)
2007 #define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8)
2008 #define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4)
2009 #define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4)
2010 #define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4)
2011 #define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4)
2021 enum stub_reloc_type
2023 STUB_RELOC_NONE = 0,
2028 #define THUMB16_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 0}
2029 #define THUMB32_INSN(X) {(X), THUMB32_TYPE, R_ARM_NONE, 0}
2030 #define ARM_INSN(X) {(X), ARM_TYPE, R_ARM_NONE, 0}
2031 #define ARM_REL_INSN(X, Z) {(X), ARM_TYPE, R_ARM_JUMP24, (Z)}
2032 #define DATA_WORD(X,Y,Z) {(X), DATA_TYPE, (Y), (Z)}
2037 enum stub_insn_type type;
2038 enum stub_reloc_type reloc_type;
2042 /* Arm/Thumb -> Arm/Thumb long branch stub. On V5T and above, use blx
2043 to reach the stub if necessary. */
2044 static const insn_sequence elf32_arm_stub_long_branch_any_any[] =
2046 ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */
2047 DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
2050 /* V4T Arm -> Thumb long branch stub. Used on V4T where blx is not
2052 static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb[] =
2054 ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */
2055 ARM_INSN(0xe12fff1c), /* bx ip */
2056 DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
2059 /* Thumb -> Thumb long branch stub. Used on architectures which
2060 support only this mode, or on V4T where it is expensive to switch
2062 static const insn_sequence elf32_arm_stub_long_branch_thumb_only[] =
2064 THUMB16_INSN(0xb401), /* push {r0} */
2065 THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */
2066 THUMB16_INSN(0x4684), /* mov ip, r0 */
2067 THUMB16_INSN(0xbc01), /* pop {r0} */
2068 THUMB16_INSN(0x4760), /* bx ip */
2069 THUMB16_INSN(0xbf00), /* nop */
2070 DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
2073 /* V4T Thumb -> ARM long branch stub. Used on V4T where blx is not
2075 static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm[] =
2077 THUMB16_INSN(0x4778), /* bx pc */
2078 THUMB16_INSN(0x46c0), /* nop */
2079 ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */
2080 DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
2083 /* V4T Thumb -> ARM short branch stub. Shorter variant of the above
2084 one, when the destination is close enough. */
2085 static const insn_sequence elf32_arm_stub_short_branch_v4t_thumb_arm[] =
2087 THUMB16_INSN(0x4778), /* bx pc */
2088 THUMB16_INSN(0x46c0), /* nop */
2089 ARM_REL_INSN(0xea000000, -8), /* b (X-8) */
2092 /* ARM/Thumb -> ARM/Thumb long branch stub, PIC. On V5T and above, use
2093 blx to reach the stub if necessary. */
2094 static const insn_sequence elf32_arm_stub_long_branch_any_any_pic[] =
2096 ARM_INSN(0xe59fc000), /* ldr r12, [pc] */
2097 ARM_INSN(0xe08ff00c), /* add pc, pc, ip */
2098 DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X-4) */
2101 /* Section name for stubs is the associated section name plus this
2103 #define STUB_SUFFIX ".stub"
2105 enum elf32_arm_stub_type
2108 arm_stub_long_branch_any_any,
2109 arm_stub_long_branch_v4t_arm_thumb,
2110 arm_stub_long_branch_thumb_only,
2111 arm_stub_long_branch_v4t_thumb_arm,
2112 arm_stub_short_branch_v4t_thumb_arm,
2113 arm_stub_long_branch_any_any_pic,
2116 struct elf32_arm_stub_hash_entry
2118 /* Base hash table entry structure. */
2119 struct bfd_hash_entry root;
2121 /* The stub section. */
2124 /* Offset within stub_sec of the beginning of this stub. */
2125 bfd_vma stub_offset;
2127 /* Given the symbol's value and its section we can determine its final
2128 value when building the stubs (so the stub knows where to jump). */
2129 bfd_vma target_value;
2130 asection *target_section;
2132 /* The stub type. */
2133 enum elf32_arm_stub_type stub_type;
2134 /* Its encoding size in bytes. */
2137 const insn_sequence *stub_template;
2138 /* The size of the template (number of entries). */
2139 int stub_template_size;
2141 /* The symbol table entry, if any, that this was derived from. */
2142 struct elf32_arm_link_hash_entry *h;
2144 /* Destination symbol type (STT_ARM_TFUNC, ...) */
2145 unsigned char st_type;
2147 /* Where this stub is being called from, or, in the case of combined
2148 stub sections, the first input section in the group. */
2151 /* The name for the local symbol at the start of this stub. The
2152 stub name in the hash table has to be unique; this does not, so
2153 it can be friendlier. */
2157 /* Used to build a map of a section. This is required for mixed-endian
2160 typedef struct elf32_elf_section_map
2165 elf32_arm_section_map;
2167 /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2171 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER,
2172 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER,
2173 VFP11_ERRATUM_ARM_VENEER,
2174 VFP11_ERRATUM_THUMB_VENEER
2176 elf32_vfp11_erratum_type;
2178 typedef struct elf32_vfp11_erratum_list
2180 struct elf32_vfp11_erratum_list *next;
2186 struct elf32_vfp11_erratum_list *veneer;
2187 unsigned int vfp_insn;
2191 struct elf32_vfp11_erratum_list *branch;
2195 elf32_vfp11_erratum_type type;
2197 elf32_vfp11_erratum_list;
2199 typedef struct _arm_elf_section_data
2201 struct bfd_elf_section_data elf;
2202 unsigned int mapcount;
2203 unsigned int mapsize;
2204 elf32_arm_section_map *map;
2205 unsigned int erratumcount;
2206 elf32_vfp11_erratum_list *erratumlist;
2208 _arm_elf_section_data;
2210 #define elf32_arm_section_data(sec) \
2211 ((_arm_elf_section_data *) elf_section_data (sec))
2213 /* The size of the thread control block. */
2216 struct elf_arm_obj_tdata
2218 struct elf_obj_tdata root;
2220 /* tls_type for each local got entry. */
2221 char *local_got_tls_type;
2223 /* Zero to warn when linking objects with incompatible enum sizes. */
2224 int no_enum_size_warning;
2226 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2227 int no_wchar_size_warning;
2230 #define elf_arm_tdata(bfd) \
2231 ((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
2233 #define elf32_arm_local_got_tls_type(bfd) \
2234 (elf_arm_tdata (bfd)->local_got_tls_type)
2236 #define is_arm_elf(bfd) \
2237 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2238 && elf_tdata (bfd) != NULL \
2239 && elf_object_id (bfd) == ARM_ELF_TDATA)
2242 elf32_arm_mkobject (bfd *abfd)
2244 return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata),
2248 /* The ARM linker needs to keep track of the number of relocs that it
2249 decides to copy in check_relocs for each symbol. This is so that
2250 it can discard PC relative relocs if it doesn't need them when
2251 linking with -Bsymbolic. We store the information in a field
2252 extending the regular ELF linker hash table. */
2254 /* This structure keeps track of the number of relocs we have copied
2255 for a given symbol. */
2256 struct elf32_arm_relocs_copied
2259 struct elf32_arm_relocs_copied * next;
2260 /* A section in dynobj. */
2262 /* Number of relocs copied in this section. */
2263 bfd_size_type count;
2264 /* Number of PC-relative relocs copied in this section. */
2265 bfd_size_type pc_count;
2268 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2270 /* Arm ELF linker hash entry. */
2271 struct elf32_arm_link_hash_entry
2273 struct elf_link_hash_entry root;
2275 /* Number of PC relative relocs copied for this symbol. */
2276 struct elf32_arm_relocs_copied * relocs_copied;
2278 /* We reference count Thumb references to a PLT entry separately,
2279 so that we can emit the Thumb trampoline only if needed. */
2280 bfd_signed_vma plt_thumb_refcount;
2282 /* Some references from Thumb code may be eliminated by BL->BLX
2283 conversion, so record them separately. */
2284 bfd_signed_vma plt_maybe_thumb_refcount;
2286 /* Since PLT entries have variable size if the Thumb prologue is
2287 used, we need to record the index into .got.plt instead of
2288 recomputing it from the PLT offset. */
2289 bfd_signed_vma plt_got_offset;
2291 #define GOT_UNKNOWN 0
2292 #define GOT_NORMAL 1
2293 #define GOT_TLS_GD 2
2294 #define GOT_TLS_IE 4
2295 unsigned char tls_type;
2297 /* The symbol marking the real symbol location for exported thumb
2298 symbols with Arm stubs. */
2299 struct elf_link_hash_entry *export_glue;
2301 /* A pointer to the most recently used stub hash entry against this
2303 struct elf32_arm_stub_hash_entry *stub_cache;
2306 /* Traverse an arm ELF linker hash table. */
2307 #define elf32_arm_link_hash_traverse(table, func, info) \
2308 (elf_link_hash_traverse \
2310 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2313 /* Get the ARM elf linker hash table from a link_info structure. */
2314 #define elf32_arm_hash_table(info) \
2315 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2317 #define arm_stub_hash_lookup(table, string, create, copy) \
2318 ((struct elf32_arm_stub_hash_entry *) \
2319 bfd_hash_lookup ((table), (string), (create), (copy)))
2321 /* ARM ELF linker hash table. */
2322 struct elf32_arm_link_hash_table
2324 /* The main hash table. */
2325 struct elf_link_hash_table root;
2327 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2328 bfd_size_type thumb_glue_size;
2330 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2331 bfd_size_type arm_glue_size;
2333 /* The size in bytes of section containing the ARMv4 BX veneers. */
2334 bfd_size_type bx_glue_size;
2336 /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when
2337 veneer has been populated. */
2338 bfd_vma bx_glue_offset[15];
2340 /* The size in bytes of the section containing glue for VFP11 erratum
2342 bfd_size_type vfp11_erratum_glue_size;
2344 /* An arbitrary input BFD chosen to hold the glue sections. */
2345 bfd * bfd_of_glue_owner;
2347 /* Nonzero to output a BE8 image. */
2350 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2351 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2354 /* The relocation to use for R_ARM_TARGET2 relocations. */
2357 /* 0 = Ignore R_ARM_V4BX.
2358 1 = Convert BX to MOV PC.
2359 2 = Generate v4 interworing stubs. */
2362 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2365 /* What sort of code sequences we should look for which may trigger the
2366 VFP11 denorm erratum. */
2367 bfd_arm_vfp11_fix vfp11_fix;
2369 /* Global counter for the number of fixes we have emitted. */
2370 int num_vfp11_fixes;
2372 /* Nonzero to force PIC branch veneers. */
2375 /* The number of bytes in the initial entry in the PLT. */
2376 bfd_size_type plt_header_size;
2378 /* The number of bytes in the subsequent PLT etries. */
2379 bfd_size_type plt_entry_size;
2381 /* True if the target system is VxWorks. */
2384 /* True if the target system is Symbian OS. */
2387 /* True if the target uses REL relocations. */
2390 /* Short-cuts to get to dynamic linker sections. */
2399 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2402 /* Data for R_ARM_TLS_LDM32 relocations. */
2405 bfd_signed_vma refcount;
2409 /* Small local sym to section mapping cache. */
2410 struct sym_sec_cache sym_sec;
2412 /* For convenience in allocate_dynrelocs. */
2415 /* The stub hash table. */
2416 struct bfd_hash_table stub_hash_table;
2418 /* Linker stub bfd. */
2421 /* Linker call-backs. */
2422 asection * (*add_stub_section) (const char *, asection *);
2423 void (*layout_sections_again) (void);
2425 /* Array to keep track of which stub sections have been created, and
2426 information on stub grouping. */
2429 /* This is the section to which stubs in the group will be
2432 /* The stub section. */
2436 /* Assorted information used by elf32_arm_size_stubs. */
2437 unsigned int bfd_count;
2439 asection **input_list;
2442 /* Create an entry in an ARM ELF linker hash table. */
2444 static struct bfd_hash_entry *
2445 elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
2446 struct bfd_hash_table * table,
2447 const char * string)
2449 struct elf32_arm_link_hash_entry * ret =
2450 (struct elf32_arm_link_hash_entry *) entry;
2452 /* Allocate the structure if it has not already been allocated by a
2455 ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
2457 return (struct bfd_hash_entry *) ret;
2459 /* Call the allocation method of the superclass. */
2460 ret = ((struct elf32_arm_link_hash_entry *)
2461 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2465 ret->relocs_copied = NULL;
2466 ret->tls_type = GOT_UNKNOWN;
2467 ret->plt_thumb_refcount = 0;
2468 ret->plt_maybe_thumb_refcount = 0;
2469 ret->plt_got_offset = -1;
2470 ret->export_glue = NULL;
2472 ret->stub_cache = NULL;
2475 return (struct bfd_hash_entry *) ret;
2478 /* Initialize an entry in the stub hash table. */
2480 static struct bfd_hash_entry *
2481 stub_hash_newfunc (struct bfd_hash_entry *entry,
2482 struct bfd_hash_table *table,
2485 /* Allocate the structure if it has not already been allocated by a
2489 entry = bfd_hash_allocate (table,
2490 sizeof (struct elf32_arm_stub_hash_entry));
2495 /* Call the allocation method of the superclass. */
2496 entry = bfd_hash_newfunc (entry, table, string);
2499 struct elf32_arm_stub_hash_entry *eh;
2501 /* Initialize the local fields. */
2502 eh = (struct elf32_arm_stub_hash_entry *) entry;
2503 eh->stub_sec = NULL;
2504 eh->stub_offset = 0;
2505 eh->target_value = 0;
2506 eh->target_section = NULL;
2507 eh->stub_type = arm_stub_none;
2509 eh->stub_template = NULL;
2510 eh->stub_template_size = 0;
2518 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2519 shortcuts to them in our hash table. */
2522 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2524 struct elf32_arm_link_hash_table *htab;
2526 htab = elf32_arm_hash_table (info);
2527 /* BPABI objects never have a GOT, or associated sections. */
2528 if (htab->symbian_p)
2531 if (! _bfd_elf_create_got_section (dynobj, info))
2534 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2535 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2536 if (!htab->sgot || !htab->sgotplt)
2539 htab->srelgot = bfd_make_section_with_flags (dynobj,
2540 RELOC_SECTION (htab, ".got"),
2541 (SEC_ALLOC | SEC_LOAD
2544 | SEC_LINKER_CREATED
2546 if (htab->srelgot == NULL
2547 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
2552 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2553 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2557 elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
2559 struct elf32_arm_link_hash_table *htab;
2561 htab = elf32_arm_hash_table (info);
2562 if (!htab->sgot && !create_got_section (dynobj, info))
2565 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2568 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
2569 htab->srelplt = bfd_get_section_by_name (dynobj,
2570 RELOC_SECTION (htab, ".plt"));
2571 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2573 htab->srelbss = bfd_get_section_by_name (dynobj,
2574 RELOC_SECTION (htab, ".bss"));
2576 if (htab->vxworks_p)
2578 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
2583 htab->plt_header_size = 0;
2584 htab->plt_entry_size
2585 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry);
2589 htab->plt_header_size
2590 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry);
2591 htab->plt_entry_size
2592 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry);
2599 || (!info->shared && !htab->srelbss))
2605 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2608 elf32_arm_copy_indirect_symbol (struct bfd_link_info *info,
2609 struct elf_link_hash_entry *dir,
2610 struct elf_link_hash_entry *ind)
2612 struct elf32_arm_link_hash_entry *edir, *eind;
2614 edir = (struct elf32_arm_link_hash_entry *) dir;
2615 eind = (struct elf32_arm_link_hash_entry *) ind;
2617 if (eind->relocs_copied != NULL)
2619 if (edir->relocs_copied != NULL)
2621 struct elf32_arm_relocs_copied **pp;
2622 struct elf32_arm_relocs_copied *p;
2624 /* Add reloc counts against the indirect sym to the direct sym
2625 list. Merge any entries against the same section. */
2626 for (pp = &eind->relocs_copied; (p = *pp) != NULL; )
2628 struct elf32_arm_relocs_copied *q;
2630 for (q = edir->relocs_copied; q != NULL; q = q->next)
2631 if (q->section == p->section)
2633 q->pc_count += p->pc_count;
2634 q->count += p->count;
2641 *pp = edir->relocs_copied;
2644 edir->relocs_copied = eind->relocs_copied;
2645 eind->relocs_copied = NULL;
2648 if (ind->root.type == bfd_link_hash_indirect)
2650 /* Copy over PLT info. */
2651 edir->plt_thumb_refcount += eind->plt_thumb_refcount;
2652 eind->plt_thumb_refcount = 0;
2653 edir->plt_maybe_thumb_refcount += eind->plt_maybe_thumb_refcount;
2654 eind->plt_maybe_thumb_refcount = 0;
2656 if (dir->got.refcount <= 0)
2658 edir->tls_type = eind->tls_type;
2659 eind->tls_type = GOT_UNKNOWN;
2663 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2666 /* Create an ARM elf linker hash table. */
2668 static struct bfd_link_hash_table *
2669 elf32_arm_link_hash_table_create (bfd *abfd)
2671 struct elf32_arm_link_hash_table *ret;
2672 bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
2674 ret = bfd_malloc (amt);
2678 if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
2679 elf32_arm_link_hash_newfunc,
2680 sizeof (struct elf32_arm_link_hash_entry)))
2687 ret->sgotplt = NULL;
2688 ret->srelgot = NULL;
2690 ret->srelplt = NULL;
2691 ret->sdynbss = NULL;
2692 ret->srelbss = NULL;
2693 ret->srelplt2 = NULL;
2694 ret->thumb_glue_size = 0;
2695 ret->arm_glue_size = 0;
2696 ret->bx_glue_size = 0;
2697 memset (ret->bx_glue_offset, 0, sizeof (ret->bx_glue_offset));
2698 ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
2699 ret->vfp11_erratum_glue_size = 0;
2700 ret->num_vfp11_fixes = 0;
2701 ret->bfd_of_glue_owner = NULL;
2702 ret->byteswap_code = 0;
2703 ret->target1_is_rel = 0;
2704 ret->target2_reloc = R_ARM_NONE;
2705 #ifdef FOUR_WORD_PLT
2706 ret->plt_header_size = 16;
2707 ret->plt_entry_size = 16;
2709 ret->plt_header_size = 20;
2710 ret->plt_entry_size = 12;
2717 ret->sym_sec.abfd = NULL;
2719 ret->tls_ldm_got.refcount = 0;
2720 ret->stub_bfd = NULL;
2721 ret->add_stub_section = NULL;
2722 ret->layout_sections_again = NULL;
2723 ret->stub_group = NULL;
2726 ret->input_list = NULL;
2728 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
2729 sizeof (struct elf32_arm_stub_hash_entry)))
2735 return &ret->root.root;
2738 /* Free the derived linker hash table. */
2741 elf32_arm_hash_table_free (struct bfd_link_hash_table *hash)
2743 struct elf32_arm_link_hash_table *ret
2744 = (struct elf32_arm_link_hash_table *) hash;
2746 bfd_hash_table_free (&ret->stub_hash_table);
2747 _bfd_generic_link_hash_table_free (hash);
2750 /* Determine if we're dealing with a Thumb only architecture. */
2753 using_thumb_only (struct elf32_arm_link_hash_table *globals)
2755 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2759 if (arch != TAG_CPU_ARCH_V7)
2762 profile = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2763 Tag_CPU_arch_profile);
2765 return profile == 'M';
2768 /* Determine if we're dealing with a Thumb-2 object. */
2771 using_thumb2 (struct elf32_arm_link_hash_table *globals)
2773 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2775 return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7;
2779 arm_stub_is_thumb (enum elf32_arm_stub_type stub_type)
2783 case arm_stub_long_branch_thumb_only:
2784 case arm_stub_long_branch_v4t_thumb_arm:
2785 case arm_stub_short_branch_v4t_thumb_arm:
2796 /* Determine the type of stub needed, if any, for a call. */
2798 static enum elf32_arm_stub_type
2799 arm_type_of_stub (struct bfd_link_info *info,
2800 asection *input_sec,
2801 const Elf_Internal_Rela *rel,
2802 unsigned char st_type,
2803 struct elf32_arm_link_hash_entry *hash,
2804 bfd_vma destination,
2810 bfd_signed_vma branch_offset;
2811 unsigned int r_type;
2812 struct elf32_arm_link_hash_table * globals;
2815 enum elf32_arm_stub_type stub_type = arm_stub_none;
2817 /* We don't know the actual type of destination in case it is of
2818 type STT_SECTION: give up. */
2819 if (st_type == STT_SECTION)
2822 globals = elf32_arm_hash_table (info);
2824 thumb_only = using_thumb_only (globals);
2826 thumb2 = using_thumb2 (globals);
2828 /* Determine where the call point is. */
2829 location = (input_sec->output_offset
2830 + input_sec->output_section->vma
2833 branch_offset = (bfd_signed_vma)(destination - location);
2835 r_type = ELF32_R_TYPE (rel->r_info);
2837 /* If the call will go through a PLT entry then we do not need
2839 if (globals->splt != NULL && hash != NULL && hash->root.plt.offset != (bfd_vma) -1)
2842 if (r_type == R_ARM_THM_CALL)
2845 && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET
2846 || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET)))
2848 && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET
2849 || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))
2850 || ((st_type != STT_ARM_TFUNC) && !globals->use_blx))
2852 if (st_type == STT_ARM_TFUNC)
2854 /* Thumb to thumb. */
2857 stub_type = (info->shared | globals->pic_veneer)
2859 ? ((globals->use_blx)
2860 /* V5T and above. */
2861 ? arm_stub_long_branch_any_any_pic
2862 /* not yet supported on V4T. */
2865 /* non-PIC stubs. */
2866 : ((globals->use_blx)
2867 /* V5T and above. */
2868 ? arm_stub_long_branch_any_any
2870 : arm_stub_long_branch_thumb_only);
2874 stub_type = (info->shared | globals->pic_veneer)
2875 /* PIC stub not yet supported on V4T. */
2878 : arm_stub_long_branch_thumb_only;
2885 && sym_sec->owner != NULL
2886 && !INTERWORK_FLAG (sym_sec->owner))
2888 (*_bfd_error_handler)
2889 (_("%B(%s): warning: interworking not enabled.\n"
2890 " first occurrence: %B: Thumb call to ARM"),
2891 sym_sec->owner, input_bfd, name);
2894 stub_type = (info->shared | globals->pic_veneer)
2896 ? ((globals->use_blx)
2897 /* V5T and above. */
2898 ? arm_stub_long_branch_any_any_pic
2899 /* not yet supported on V4T. */
2902 /* non-PIC stubs. */
2903 : ((globals->use_blx)
2904 /* V5T and above. */
2905 ? arm_stub_long_branch_any_any
2907 : arm_stub_long_branch_v4t_thumb_arm);
2909 /* Handle v4t short branches. */
2910 if ((stub_type == arm_stub_long_branch_v4t_thumb_arm)
2911 && (branch_offset <= THM_MAX_FWD_BRANCH_OFFSET)
2912 && (branch_offset >= THM_MAX_BWD_BRANCH_OFFSET))
2913 stub_type = arm_stub_short_branch_v4t_thumb_arm;
2917 else if (r_type == R_ARM_CALL)
2919 if (st_type == STT_ARM_TFUNC)
2924 && sym_sec->owner != NULL
2925 && !INTERWORK_FLAG (sym_sec->owner))
2927 (*_bfd_error_handler)
2928 (_("%B(%s): warning: interworking not enabled.\n"
2929 " first occurrence: %B: ARM call to Thumb"),
2930 sym_sec->owner, input_bfd, name);
2933 /* We have an extra 2-bytes reach because of
2934 the mode change (bit 24 (H) of BLX encoding). */
2935 if (branch_offset > (ARM_MAX_FWD_BRANCH_OFFSET + 2)
2936 || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET)
2937 || !globals->use_blx)
2939 stub_type = (info->shared | globals->pic_veneer)
2941 ? arm_stub_long_branch_any_any_pic
2942 /* non-PIC stubs. */
2943 : ((globals->use_blx)
2944 /* V5T and above. */
2945 ? arm_stub_long_branch_any_any
2947 : arm_stub_long_branch_v4t_arm_thumb);
2953 if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET
2954 || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET))
2956 stub_type = (info->shared | globals->pic_veneer)
2958 ? arm_stub_long_branch_any_any_pic
2959 /* non-PIC stubs. */
2960 : arm_stub_long_branch_any_any;
2968 /* Build a name for an entry in the stub hash table. */
2971 elf32_arm_stub_name (const asection *input_section,
2972 const asection *sym_sec,
2973 const struct elf32_arm_link_hash_entry *hash,
2974 const Elf_Internal_Rela *rel)
2981 len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 8 + 1;
2982 stub_name = bfd_malloc (len);
2983 if (stub_name != NULL)
2984 sprintf (stub_name, "%08x_%s+%x",
2985 input_section->id & 0xffffffff,
2986 hash->root.root.root.string,
2987 (int) rel->r_addend & 0xffffffff);
2991 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
2992 stub_name = bfd_malloc (len);
2993 if (stub_name != NULL)
2994 sprintf (stub_name, "%08x_%x:%x+%x",
2995 input_section->id & 0xffffffff,
2996 sym_sec->id & 0xffffffff,
2997 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
2998 (int) rel->r_addend & 0xffffffff);
3004 /* Look up an entry in the stub hash. Stub entries are cached because
3005 creating the stub name takes a bit of time. */
3007 static struct elf32_arm_stub_hash_entry *
3008 elf32_arm_get_stub_entry (const asection *input_section,
3009 const asection *sym_sec,
3010 struct elf_link_hash_entry *hash,
3011 const Elf_Internal_Rela *rel,
3012 struct elf32_arm_link_hash_table *htab)
3014 struct elf32_arm_stub_hash_entry *stub_entry;
3015 struct elf32_arm_link_hash_entry *h = (struct elf32_arm_link_hash_entry *) hash;
3016 const asection *id_sec;
3018 if ((input_section->flags & SEC_CODE) == 0)
3021 /* If this input section is part of a group of sections sharing one
3022 stub section, then use the id of the first section in the group.
3023 Stub names need to include a section id, as there may well be
3024 more than one stub used to reach say, printf, and we need to
3025 distinguish between them. */
3026 id_sec = htab->stub_group[input_section->id].link_sec;
3028 if (h != NULL && h->stub_cache != NULL
3029 && h->stub_cache->h == h
3030 && h->stub_cache->id_sec == id_sec)
3032 stub_entry = h->stub_cache;
3038 stub_name = elf32_arm_stub_name (id_sec, sym_sec, h, rel);
3039 if (stub_name == NULL)
3042 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table,
3043 stub_name, FALSE, FALSE);
3045 h->stub_cache = stub_entry;
3053 /* Add a new stub entry to the stub hash. Not all fields of the new
3054 stub entry are initialised. */
3056 static struct elf32_arm_stub_hash_entry *
3057 elf32_arm_add_stub (const char *stub_name,
3059 struct elf32_arm_link_hash_table *htab)
3063 struct elf32_arm_stub_hash_entry *stub_entry;
3065 link_sec = htab->stub_group[section->id].link_sec;
3066 stub_sec = htab->stub_group[section->id].stub_sec;
3067 if (stub_sec == NULL)
3069 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3070 if (stub_sec == NULL)
3076 namelen = strlen (link_sec->name);
3077 len = namelen + sizeof (STUB_SUFFIX);
3078 s_name = bfd_alloc (htab->stub_bfd, len);
3082 memcpy (s_name, link_sec->name, namelen);
3083 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3084 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3085 if (stub_sec == NULL)
3087 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3089 htab->stub_group[section->id].stub_sec = stub_sec;
3092 /* Enter this entry into the linker stub hash table. */
3093 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3095 if (stub_entry == NULL)
3097 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
3103 stub_entry->stub_sec = stub_sec;
3104 stub_entry->stub_offset = 0;
3105 stub_entry->id_sec = link_sec;
3110 /* Store an Arm insn into an output section not processed by
3111 elf32_arm_write_section. */
3114 put_arm_insn (struct elf32_arm_link_hash_table * htab,
3115 bfd * output_bfd, bfd_vma val, void * ptr)
3117 if (htab->byteswap_code != bfd_little_endian (output_bfd))
3118 bfd_putl32 (val, ptr);
3120 bfd_putb32 (val, ptr);
3123 /* Store a 16-bit Thumb insn into an output section not processed by
3124 elf32_arm_write_section. */
3127 put_thumb_insn (struct elf32_arm_link_hash_table * htab,
3128 bfd * output_bfd, bfd_vma val, void * ptr)
3130 if (htab->byteswap_code != bfd_little_endian (output_bfd))
3131 bfd_putl16 (val, ptr);
3133 bfd_putb16 (val, ptr);
3137 arm_build_one_stub (struct bfd_hash_entry *gen_entry,
3140 struct elf32_arm_stub_hash_entry *stub_entry;
3141 struct bfd_link_info *info;
3142 struct elf32_arm_link_hash_table *htab;
3150 const insn_sequence *template;
3152 struct elf32_arm_link_hash_table * globals;
3153 int stub_reloc_idx = -1;
3154 int stub_reloc_offset;
3156 /* Massage our args to the form they really have. */
3157 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
3158 info = (struct bfd_link_info *) in_arg;
3160 globals = elf32_arm_hash_table (info);
3162 htab = elf32_arm_hash_table (info);
3163 stub_sec = stub_entry->stub_sec;
3165 /* Make a note of the offset within the stubs for this entry. */
3166 stub_entry->stub_offset = stub_sec->size;
3167 loc = stub_sec->contents + stub_entry->stub_offset;
3169 stub_bfd = stub_sec->owner;
3171 /* This is the address of the start of the stub. */
3172 stub_addr = stub_sec->output_section->vma + stub_sec->output_offset
3173 + stub_entry->stub_offset;
3175 /* This is the address of the stub destination. */
3176 sym_value = (stub_entry->target_value
3177 + stub_entry->target_section->output_offset
3178 + stub_entry->target_section->output_section->vma);
3180 template = stub_entry->stub_template;
3181 template_size = stub_entry->stub_template_size;
3184 for (i = 0; i < template_size; i++)
3186 switch(template[i].type)
3189 put_thumb_insn (globals, stub_bfd, template[i].data, loc + size);
3194 put_arm_insn (globals, stub_bfd, template[i].data, loc + size);
3195 /* Handle cases where the target is encoded within the
3197 if (template[i].reloc_type == R_ARM_JUMP24)
3200 stub_reloc_offset = size;
3206 bfd_put_32 (stub_bfd, template[i].data, loc + size);
3208 stub_reloc_offset = size;
3218 stub_sec->size += size;
3220 /* Stub size has already been computed in arm_size_one_stub. Check
3222 BFD_ASSERT (size == stub_entry->stub_size);
3224 /* Destination is Thumb. Force bit 0 to 1 to reflect this. */
3225 if (stub_entry->st_type == STT_ARM_TFUNC)
3228 /* Assume there is one and only one entry to relocate in each stub. */
3229 BFD_ASSERT (stub_reloc_idx != -1);
3231 _bfd_final_link_relocate (elf32_arm_howto_from_type (template[stub_reloc_idx].reloc_type),
3232 stub_bfd, stub_sec, stub_sec->contents,
3233 stub_entry->stub_offset + stub_reloc_offset,
3234 sym_value, template[stub_reloc_idx].reloc_addend);
3239 /* As above, but don't actually build the stub. Just bump offset so
3240 we know stub section sizes. */
3243 arm_size_one_stub (struct bfd_hash_entry *gen_entry,
3246 struct elf32_arm_stub_hash_entry *stub_entry;
3247 struct elf32_arm_link_hash_table *htab;
3248 const insn_sequence *template;
3253 /* Massage our args to the form they really have. */
3254 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
3255 htab = (struct elf32_arm_link_hash_table *) in_arg;
3257 switch (stub_entry->stub_type)
3259 case arm_stub_long_branch_any_any:
3260 template = elf32_arm_stub_long_branch_any_any;
3261 template_size = sizeof (elf32_arm_stub_long_branch_any_any) / sizeof (insn_sequence);
3264 case arm_stub_long_branch_v4t_arm_thumb:
3265 template = elf32_arm_stub_long_branch_v4t_arm_thumb;
3266 template_size = sizeof (elf32_arm_stub_long_branch_v4t_arm_thumb) / sizeof (insn_sequence);
3268 case arm_stub_long_branch_thumb_only:
3269 template = elf32_arm_stub_long_branch_thumb_only;
3270 template_size = sizeof (elf32_arm_stub_long_branch_thumb_only) / sizeof (insn_sequence);
3272 case arm_stub_long_branch_v4t_thumb_arm:
3273 template = elf32_arm_stub_long_branch_v4t_thumb_arm;
3274 template_size = sizeof (elf32_arm_stub_long_branch_v4t_thumb_arm) / sizeof (insn_sequence);
3276 case arm_stub_short_branch_v4t_thumb_arm:
3277 template = elf32_arm_stub_short_branch_v4t_thumb_arm;
3278 template_size = sizeof (elf32_arm_stub_short_branch_v4t_thumb_arm) / sizeof (insn_sequence);
3280 case arm_stub_long_branch_any_any_pic:
3281 template = elf32_arm_stub_long_branch_any_any_pic;
3282 template_size = sizeof (elf32_arm_stub_long_branch_any_any_pic) / sizeof (insn_sequence);
3291 for (i = 0; i < template_size; i++)
3293 switch(template[i].type)
3313 stub_entry->stub_size = size;
3314 stub_entry->stub_template = template;
3315 stub_entry->stub_template_size = template_size;
3317 size = (size + 7) & ~7;
3318 stub_entry->stub_sec->size += size;
3323 /* External entry points for sizing and building linker stubs. */
3325 /* Set up various things so that we can make a list of input sections
3326 for each output section included in the link. Returns -1 on error,
3327 0 when no stubs will be needed, and 1 on success. */
3330 elf32_arm_setup_section_lists (bfd *output_bfd,
3331 struct bfd_link_info *info)
3334 unsigned int bfd_count;
3335 int top_id, top_index;
3337 asection **input_list, **list;
3339 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3341 if (! is_elf_hash_table (htab))
3344 /* Count the number of input BFDs and find the top input section id. */
3345 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
3347 input_bfd = input_bfd->link_next)
3350 for (section = input_bfd->sections;
3352 section = section->next)
3354 if (top_id < section->id)
3355 top_id = section->id;
3358 htab->bfd_count = bfd_count;
3360 amt = sizeof (struct map_stub) * (top_id + 1);
3361 htab->stub_group = bfd_zmalloc (amt);
3362 if (htab->stub_group == NULL)
3365 /* We can't use output_bfd->section_count here to find the top output
3366 section index as some sections may have been removed, and
3367 _bfd_strip_section_from_output doesn't renumber the indices. */
3368 for (section = output_bfd->sections, top_index = 0;
3370 section = section->next)
3372 if (top_index < section->index)
3373 top_index = section->index;
3376 htab->top_index = top_index;
3377 amt = sizeof (asection *) * (top_index + 1);
3378 input_list = bfd_malloc (amt);
3379 htab->input_list = input_list;
3380 if (input_list == NULL)
3383 /* For sections we aren't interested in, mark their entries with a
3384 value we can check later. */
3385 list = input_list + top_index;
3387 *list = bfd_abs_section_ptr;
3388 while (list-- != input_list);
3390 for (section = output_bfd->sections;
3392 section = section->next)
3394 if ((section->flags & SEC_CODE) != 0)
3395 input_list[section->index] = NULL;
3401 /* The linker repeatedly calls this function for each input section,
3402 in the order that input sections are linked into output sections.
3403 Build lists of input sections to determine groupings between which
3404 we may insert linker stubs. */
3407 elf32_arm_next_input_section (struct bfd_link_info *info,
3410 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3412 if (isec->output_section->index <= htab->top_index)
3414 asection **list = htab->input_list + isec->output_section->index;
3416 if (*list != bfd_abs_section_ptr)
3418 /* Steal the link_sec pointer for our list. */
3419 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3420 /* This happens to make the list in reverse order,
3421 which is what we want. */
3422 PREV_SEC (isec) = *list;
3428 /* See whether we can group stub sections together. Grouping stub
3429 sections may result in fewer stubs. More importantly, we need to
3430 put all .init* and .fini* stubs at the beginning of the .init or
3431 .fini output sections respectively, because glibc splits the
3432 _init and _fini functions into multiple parts. Putting a stub in
3433 the middle of a function is not a good idea. */
3436 group_sections (struct elf32_arm_link_hash_table *htab,
3437 bfd_size_type stub_group_size,
3438 bfd_boolean stubs_always_before_branch)
3440 asection **list = htab->input_list + htab->top_index;
3444 asection *tail = *list;
3446 if (tail == bfd_abs_section_ptr)
3449 while (tail != NULL)
3453 bfd_size_type total;
3457 while ((prev = PREV_SEC (curr)) != NULL
3458 && ((total += curr->output_offset - prev->output_offset)
3462 /* OK, the size from the start of CURR to the end is less
3463 than stub_group_size and thus can be handled by one stub
3464 section. (Or the tail section is itself larger than
3465 stub_group_size, in which case we may be toast.)
3466 We should really be keeping track of the total size of
3467 stubs added here, as stubs contribute to the final output
3471 prev = PREV_SEC (tail);
3472 /* Set up this stub group. */
3473 htab->stub_group[tail->id].link_sec = curr;
3475 while (tail != curr && (tail = prev) != NULL);
3477 /* But wait, there's more! Input sections up to stub_group_size
3478 bytes before the stub section can be handled by it too. */
3479 if (!stubs_always_before_branch)
3483 && ((total += tail->output_offset - prev->output_offset)
3487 prev = PREV_SEC (tail);
3488 htab->stub_group[tail->id].link_sec = curr;
3494 while (list-- != htab->input_list);
3496 free (htab->input_list);
3500 /* Determine and set the size of the stub section for a final link.
3502 The basic idea here is to examine all the relocations looking for
3503 PC-relative calls to a target that is unreachable with a "bl"
3507 elf32_arm_size_stubs (bfd *output_bfd,
3509 struct bfd_link_info *info,
3510 bfd_signed_vma group_size,
3511 asection * (*add_stub_section) (const char *, asection *),
3512 void (*layout_sections_again) (void))
3514 bfd_size_type stub_group_size;
3515 bfd_boolean stubs_always_before_branch;
3516 bfd_boolean stub_changed = 0;
3517 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3519 /* Propagate mach to stub bfd, because it may not have been
3520 finalized when we created stub_bfd. */
3521 bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
3522 bfd_get_mach (output_bfd));
3524 /* Stash our params away. */
3525 htab->stub_bfd = stub_bfd;
3526 htab->add_stub_section = add_stub_section;
3527 htab->layout_sections_again = layout_sections_again;
3528 stubs_always_before_branch = group_size < 0;
3530 stub_group_size = -group_size;
3532 stub_group_size = group_size;
3534 if (stub_group_size == 1)
3536 /* Default values. */
3537 /* Thumb branch range is +-4MB has to be used as the default
3538 maximum size (a given section can contain both ARM and Thumb
3539 code, so the worst case has to be taken into account).
3541 This value is 24K less than that, which allows for 2025
3542 12-byte stubs. If we exceed that, then we will fail to link.
3543 The user will have to relink with an explicit group size
3545 stub_group_size = 4170000;
3548 group_sections (htab, stub_group_size, stubs_always_before_branch);
3553 unsigned int bfd_indx;
3556 for (input_bfd = info->input_bfds, bfd_indx = 0;
3558 input_bfd = input_bfd->link_next, bfd_indx++)
3560 Elf_Internal_Shdr *symtab_hdr;
3562 Elf_Internal_Sym *local_syms = NULL;
3564 /* We'll need the symbol table in a second. */
3565 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3566 if (symtab_hdr->sh_info == 0)
3569 /* Walk over each section attached to the input bfd. */
3570 for (section = input_bfd->sections;
3572 section = section->next)
3574 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
3576 /* If there aren't any relocs, then there's nothing more
3578 if ((section->flags & SEC_RELOC) == 0
3579 || section->reloc_count == 0
3580 || (section->flags & SEC_CODE) == 0)
3583 /* If this section is a link-once section that will be
3584 discarded, then don't create any stubs. */
3585 if (section->output_section == NULL
3586 || section->output_section->owner != output_bfd)
3589 /* Get the relocs. */
3591 = _bfd_elf_link_read_relocs (input_bfd, section, NULL,
3592 NULL, info->keep_memory);
3593 if (internal_relocs == NULL)
3594 goto error_ret_free_local;
3596 /* Now examine each relocation. */
3597 irela = internal_relocs;
3598 irelaend = irela + section->reloc_count;
3599 for (; irela < irelaend; irela++)
3601 unsigned int r_type, r_indx;
3602 enum elf32_arm_stub_type stub_type;
3603 struct elf32_arm_stub_hash_entry *stub_entry;
3606 bfd_vma destination;
3607 struct elf32_arm_link_hash_entry *hash;
3608 const char *sym_name;
3610 const asection *id_sec;
3611 unsigned char st_type;
3613 r_type = ELF32_R_TYPE (irela->r_info);
3614 r_indx = ELF32_R_SYM (irela->r_info);
3616 if (r_type >= (unsigned int) R_ARM_max)
3618 bfd_set_error (bfd_error_bad_value);
3619 error_ret_free_internal:
3620 if (elf_section_data (section)->relocs == NULL)
3621 free (internal_relocs);
3622 goto error_ret_free_local;
3625 /* Only look for stubs on call instructions. */
3626 if ((r_type != (unsigned int) R_ARM_CALL)
3627 && (r_type != (unsigned int) R_ARM_THM_CALL))
3630 /* Now determine the call target, its name, value,
3637 if (r_indx < symtab_hdr->sh_info)
3639 /* It's a local symbol. */
3640 Elf_Internal_Sym *sym;
3641 Elf_Internal_Shdr *hdr;
3643 if (local_syms == NULL)
3646 = (Elf_Internal_Sym *) symtab_hdr->contents;
3647 if (local_syms == NULL)
3649 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3650 symtab_hdr->sh_info, 0,
3652 if (local_syms == NULL)
3653 goto error_ret_free_internal;
3656 sym = local_syms + r_indx;
3657 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
3658 sym_sec = hdr->bfd_section;
3659 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
3660 sym_value = sym->st_value;
3661 destination = (sym_value + irela->r_addend
3662 + sym_sec->output_offset
3663 + sym_sec->output_section->vma);
3664 st_type = ELF_ST_TYPE (sym->st_info);
3666 = bfd_elf_string_from_elf_section (input_bfd,
3667 symtab_hdr->sh_link,
3672 /* It's an external symbol. */
3675 e_indx = r_indx - symtab_hdr->sh_info;
3676 hash = ((struct elf32_arm_link_hash_entry *)
3677 elf_sym_hashes (input_bfd)[e_indx]);
3679 while (hash->root.root.type == bfd_link_hash_indirect
3680 || hash->root.root.type == bfd_link_hash_warning)
3681 hash = ((struct elf32_arm_link_hash_entry *)
3682 hash->root.root.u.i.link);
3684 if (hash->root.root.type == bfd_link_hash_defined
3685 || hash->root.root.type == bfd_link_hash_defweak)
3687 sym_sec = hash->root.root.u.def.section;
3688 sym_value = hash->root.root.u.def.value;
3689 if (sym_sec->output_section != NULL)
3690 destination = (sym_value + irela->r_addend
3691 + sym_sec->output_offset
3692 + sym_sec->output_section->vma);
3694 else if (hash->root.root.type == bfd_link_hash_undefweak
3695 || hash->root.root.type == bfd_link_hash_undefined)
3696 /* For a shared library, these will need a PLT stub,
3697 which is treated separately.
3698 For absolute code, they cannot be handled. */
3702 bfd_set_error (bfd_error_bad_value);
3703 goto error_ret_free_internal;
3705 st_type = ELF_ST_TYPE (hash->root.type);
3706 sym_name = hash->root.root.root.string;
3709 /* Determine what (if any) linker stub is needed. */
3710 stub_type = arm_type_of_stub (info, section, irela, st_type,
3711 hash, destination, sym_sec,
3712 input_bfd, sym_name);
3713 if (stub_type == arm_stub_none)
3716 /* Support for grouping stub sections. */
3717 id_sec = htab->stub_group[section->id].link_sec;
3719 /* Get the name of this stub. */
3720 stub_name = elf32_arm_stub_name (id_sec, sym_sec, hash, irela);
3722 goto error_ret_free_internal;
3724 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table,
3727 if (stub_entry != NULL)
3729 /* The proper stub has already been created. */
3734 stub_entry = elf32_arm_add_stub (stub_name, section, htab);
3735 if (stub_entry == NULL)
3738 goto error_ret_free_internal;
3741 stub_entry->target_value = sym_value;
3742 stub_entry->target_section = sym_sec;
3743 stub_entry->stub_type = stub_type;
3744 stub_entry->h = hash;
3745 stub_entry->st_type = st_type;
3747 if (sym_name == NULL)
3748 sym_name = "unnamed";
3749 stub_entry->output_name
3750 = bfd_alloc (htab->stub_bfd,
3751 sizeof (THUMB2ARM_GLUE_ENTRY_NAME)
3752 + strlen (sym_name));
3753 if (stub_entry->output_name == NULL)
3756 goto error_ret_free_internal;
3759 /* For historical reasons, use the existing names for
3760 ARM-to-Thumb and Thumb-to-ARM stubs. */
3761 if (r_type == (unsigned int) R_ARM_THM_CALL
3762 && st_type != STT_ARM_TFUNC)
3763 sprintf (stub_entry->output_name, THUMB2ARM_GLUE_ENTRY_NAME,
3765 else if (r_type == (unsigned int) R_ARM_CALL
3766 && st_type == STT_ARM_TFUNC)
3767 sprintf (stub_entry->output_name, ARM2THUMB_GLUE_ENTRY_NAME,
3770 sprintf (stub_entry->output_name, STUB_ENTRY_NAME,
3773 stub_changed = TRUE;
3776 /* We're done with the internal relocs, free them. */
3777 if (elf_section_data (section)->relocs == NULL)
3778 free (internal_relocs);
3785 /* OK, we've added some stubs. Find out the new size of the
3787 for (stub_sec = htab->stub_bfd->sections;
3789 stub_sec = stub_sec->next)
3792 bfd_hash_traverse (&htab->stub_hash_table, arm_size_one_stub, htab);
3794 /* Ask the linker to do its stuff. */
3795 (*htab->layout_sections_again) ();
3796 stub_changed = FALSE;
3801 error_ret_free_local:
3805 /* Build all the stubs associated with the current output file. The
3806 stubs are kept in a hash table attached to the main linker hash
3807 table. We also set up the .plt entries for statically linked PIC
3808 functions here. This function is called via arm_elf_finish in the
3812 elf32_arm_build_stubs (struct bfd_link_info *info)
3815 struct bfd_hash_table *table;
3816 struct elf32_arm_link_hash_table *htab;
3818 htab = elf32_arm_hash_table (info);
3820 for (stub_sec = htab->stub_bfd->sections;
3822 stub_sec = stub_sec->next)
3826 /* Ignore non-stub sections. */
3827 if (!strstr (stub_sec->name, STUB_SUFFIX))
3830 /* Allocate memory to hold the linker stubs. */
3831 size = stub_sec->size;
3832 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
3833 if (stub_sec->contents == NULL && size != 0)
3838 /* Build the stubs as directed by the stub hash table. */
3839 table = &htab->stub_hash_table;
3840 bfd_hash_traverse (table, arm_build_one_stub, info);
3845 /* Locate the Thumb encoded calling stub for NAME. */
3847 static struct elf_link_hash_entry *
3848 find_thumb_glue (struct bfd_link_info *link_info,
3850 char **error_message)
3853 struct elf_link_hash_entry *hash;
3854 struct elf32_arm_link_hash_table *hash_table;
3856 /* We need a pointer to the armelf specific hash table. */
3857 hash_table = elf32_arm_hash_table (link_info);
3859 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
3860 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
3862 BFD_ASSERT (tmp_name);
3864 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
3866 hash = elf_link_hash_lookup
3867 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
3870 && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"),
3871 tmp_name, name) == -1)
3872 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
3879 /* Locate the ARM encoded calling stub for NAME. */
3881 static struct elf_link_hash_entry *
3882 find_arm_glue (struct bfd_link_info *link_info,
3884 char **error_message)
3887 struct elf_link_hash_entry *myh;
3888 struct elf32_arm_link_hash_table *hash_table;
3890 /* We need a pointer to the elfarm specific hash table. */
3891 hash_table = elf32_arm_hash_table (link_info);
3893 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
3894 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
3896 BFD_ASSERT (tmp_name);
3898 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
3900 myh = elf_link_hash_lookup
3901 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
3904 && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"),
3905 tmp_name, name) == -1)
3906 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
3913 /* ARM->Thumb glue (static images):
3917 ldr r12, __func_addr
3920 .word func @ behave as if you saw a ARM_32 reloc.
3927 .word func @ behave as if you saw a ARM_32 reloc.
3929 (relocatable images)
3932 ldr r12, __func_offset
3938 #define ARM2THUMB_STATIC_GLUE_SIZE 12
3939 static const insn32 a2t1_ldr_insn = 0xe59fc000;
3940 static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
3941 static const insn32 a2t3_func_addr_insn = 0x00000001;
3943 #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
3944 static const insn32 a2t1v5_ldr_insn = 0xe51ff004;
3945 static const insn32 a2t2v5_func_addr_insn = 0x00000001;
3947 #define ARM2THUMB_PIC_GLUE_SIZE 16
3948 static const insn32 a2t1p_ldr_insn = 0xe59fc004;
3949 static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
3950 static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
3952 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
3956 __func_from_thumb: __func_from_thumb:
3958 nop ldr r6, __func_addr
3968 #define THUMB2ARM_GLUE_SIZE 8
3969 static const insn16 t2a1_bx_pc_insn = 0x4778;
3970 static const insn16 t2a2_noop_insn = 0x46c0;
3971 static const insn32 t2a3_b_insn = 0xea000000;
3973 #define VFP11_ERRATUM_VENEER_SIZE 8
3975 #define ARM_BX_VENEER_SIZE 12
3976 static const insn32 armbx1_tst_insn = 0xe3100001;
3977 static const insn32 armbx2_moveq_insn = 0x01a0f000;
3978 static const insn32 armbx3_bx_insn = 0xe12fff10;
3980 #ifndef ELFARM_NABI_C_INCLUDED
3982 arm_allocate_glue_section_space (bfd * abfd, bfd_size_type size, const char * name)
3985 bfd_byte * contents;
3990 BFD_ASSERT (abfd != NULL);
3992 s = bfd_get_section_by_name (abfd, name);
3993 BFD_ASSERT (s != NULL);
3995 contents = bfd_alloc (abfd, size);
3997 BFD_ASSERT (s->size == size);
3998 s->contents = contents;
4002 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
4004 struct elf32_arm_link_hash_table * globals;
4006 globals = elf32_arm_hash_table (info);
4007 BFD_ASSERT (globals != NULL);
4009 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
4010 globals->arm_glue_size,
4011 ARM2THUMB_GLUE_SECTION_NAME);
4013 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
4014 globals->thumb_glue_size,
4015 THUMB2ARM_GLUE_SECTION_NAME);
4017 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
4018 globals->vfp11_erratum_glue_size,
4019 VFP11_ERRATUM_VENEER_SECTION_NAME);
4021 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
4022 globals->bx_glue_size,
4023 ARM_BX_GLUE_SECTION_NAME);
4028 /* Allocate space and symbols for calling a Thumb function from Arm mode.
4029 returns the symbol identifying the stub. */
4031 static struct elf_link_hash_entry *
4032 record_arm_to_thumb_glue (struct bfd_link_info * link_info,
4033 struct elf_link_hash_entry * h)
4035 const char * name = h->root.root.string;
4038 struct elf_link_hash_entry * myh;
4039 struct bfd_link_hash_entry * bh;
4040 struct elf32_arm_link_hash_table * globals;
4044 globals = elf32_arm_hash_table (link_info);
4046 BFD_ASSERT (globals != NULL);
4047 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4049 s = bfd_get_section_by_name
4050 (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
4052 BFD_ASSERT (s != NULL);
4054 tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
4056 BFD_ASSERT (tmp_name);
4058 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
4060 myh = elf_link_hash_lookup
4061 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
4065 /* We've already seen this guy. */
4070 /* The only trick here is using hash_table->arm_glue_size as the value.
4071 Even though the section isn't allocated yet, this is where we will be
4072 putting it. The +1 on the value marks that the stub has not been
4073 output yet - not that it is a Thumb function. */
4075 val = globals->arm_glue_size + 1;
4076 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
4077 tmp_name, BSF_GLOBAL, s, val,
4078 NULL, TRUE, FALSE, &bh);
4080 myh = (struct elf_link_hash_entry *) bh;
4081 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4082 myh->forced_local = 1;
4086 if (link_info->shared || globals->root.is_relocatable_executable
4087 || globals->pic_veneer)
4088 size = ARM2THUMB_PIC_GLUE_SIZE;
4089 else if (globals->use_blx)
4090 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
4092 size = ARM2THUMB_STATIC_GLUE_SIZE;
4095 globals->arm_glue_size += size;
4101 record_thumb_to_arm_glue (struct bfd_link_info *link_info,
4102 struct elf_link_hash_entry *h)
4104 const char *name = h->root.root.string;
4107 struct elf_link_hash_entry *myh;
4108 struct bfd_link_hash_entry *bh;
4109 struct elf32_arm_link_hash_table *hash_table;
4112 hash_table = elf32_arm_hash_table (link_info);
4114 BFD_ASSERT (hash_table != NULL);
4115 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
4117 s = bfd_get_section_by_name
4118 (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
4120 BFD_ASSERT (s != NULL);
4122 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
4123 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
4125 BFD_ASSERT (tmp_name);
4127 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
4129 myh = elf_link_hash_lookup
4130 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
4134 /* We've already seen this guy. */
4139 /* The only trick here is using hash_table->thumb_glue_size as the value.
4140 Even though the section isn't allocated yet, this is where we will be
4141 putting it. The +1 on the value marks that the stub has not been
4142 output yet - not that it is a Thumb function. */
4144 val = hash_table->thumb_glue_size + 1;
4145 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4146 tmp_name, BSF_GLOBAL, s, val,
4147 NULL, TRUE, FALSE, &bh);
4149 /* If we mark it 'Thumb', the disassembler will do a better job. */
4150 myh = (struct elf_link_hash_entry *) bh;
4151 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
4152 myh->forced_local = 1;
4156 #define CHANGE_TO_ARM "__%s_change_to_arm"
4157 #define BACK_FROM_ARM "__%s_back_from_arm"
4159 /* Allocate another symbol to mark where we switch to Arm mode. */
4160 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
4161 + strlen (CHANGE_TO_ARM) + 1);
4163 BFD_ASSERT (tmp_name);
4165 sprintf (tmp_name, CHANGE_TO_ARM, name);
4168 val = hash_table->thumb_glue_size + 4,
4169 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4170 tmp_name, BSF_LOCAL, s, val,
4171 NULL, TRUE, FALSE, &bh);
4175 s->size += THUMB2ARM_GLUE_SIZE;
4176 hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
4180 /* Allocate space for ARMv4 BX veneers. */
4183 record_arm_bx_glue (struct bfd_link_info * link_info, int reg)
4186 struct elf32_arm_link_hash_table *globals;
4188 struct elf_link_hash_entry *myh;
4189 struct bfd_link_hash_entry *bh;
4192 /* BX PC does not need a veneer. */
4196 globals = elf32_arm_hash_table (link_info);
4198 BFD_ASSERT (globals != NULL);
4199 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4201 /* Check if this veneer has already been allocated. */
4202 if (globals->bx_glue_offset[reg])
4205 s = bfd_get_section_by_name
4206 (globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME);
4208 BFD_ASSERT (s != NULL);
4210 /* Add symbol for veneer. */
4211 tmp_name = bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1);
4213 BFD_ASSERT (tmp_name);
4215 sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg);
4217 myh = elf_link_hash_lookup
4218 (&(globals)->root, tmp_name, FALSE, FALSE, FALSE);
4220 BFD_ASSERT (myh == NULL);
4223 val = globals->bx_glue_size;
4224 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
4225 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
4226 NULL, TRUE, FALSE, &bh);
4228 myh = (struct elf_link_hash_entry *) bh;
4229 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4230 myh->forced_local = 1;
4232 s->size += ARM_BX_VENEER_SIZE;
4233 globals->bx_glue_offset[reg] = globals->bx_glue_size | 2;
4234 globals->bx_glue_size += ARM_BX_VENEER_SIZE;
4238 /* Add an entry to the code/data map for section SEC. */
4241 elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma)
4243 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
4244 unsigned int newidx;
4246 if (sec_data->map == NULL)
4248 sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map));
4249 sec_data->mapcount = 0;
4250 sec_data->mapsize = 1;
4253 newidx = sec_data->mapcount++;
4255 if (sec_data->mapcount > sec_data->mapsize)
4257 sec_data->mapsize *= 2;
4258 sec_data->map = bfd_realloc_or_free (sec_data->map, sec_data->mapsize
4259 * sizeof (elf32_arm_section_map));
4264 sec_data->map[newidx].vma = vma;
4265 sec_data->map[newidx].type = type;
4270 /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
4271 veneers are handled for now. */
4274 record_vfp11_erratum_veneer (struct bfd_link_info *link_info,
4275 elf32_vfp11_erratum_list *branch,
4277 asection *branch_sec,
4278 unsigned int offset)
4281 struct elf32_arm_link_hash_table *hash_table;
4283 struct elf_link_hash_entry *myh;
4284 struct bfd_link_hash_entry *bh;
4286 struct _arm_elf_section_data *sec_data;
4288 elf32_vfp11_erratum_list *newerr;
4290 hash_table = elf32_arm_hash_table (link_info);
4292 BFD_ASSERT (hash_table != NULL);
4293 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
4295 s = bfd_get_section_by_name
4296 (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
4298 sec_data = elf32_arm_section_data (s);
4300 BFD_ASSERT (s != NULL);
4302 tmp_name = bfd_malloc ((bfd_size_type) strlen
4303 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
4305 BFD_ASSERT (tmp_name);
4307 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
4308 hash_table->num_vfp11_fixes);
4310 myh = elf_link_hash_lookup
4311 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
4313 BFD_ASSERT (myh == NULL);
4316 val = hash_table->vfp11_erratum_glue_size;
4317 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4318 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
4319 NULL, TRUE, FALSE, &bh);
4321 myh = (struct elf_link_hash_entry *) bh;
4322 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4323 myh->forced_local = 1;
4325 /* Link veneer back to calling location. */
4326 errcount = ++(sec_data->erratumcount);
4327 newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
4329 newerr->type = VFP11_ERRATUM_ARM_VENEER;
4331 newerr->u.v.branch = branch;
4332 newerr->u.v.id = hash_table->num_vfp11_fixes;
4333 branch->u.b.veneer = newerr;
4335 newerr->next = sec_data->erratumlist;
4336 sec_data->erratumlist = newerr;
4338 /* A symbol for the return from the veneer. */
4339 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
4340 hash_table->num_vfp11_fixes);
4342 myh = elf_link_hash_lookup
4343 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
4350 _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL,
4351 branch_sec, val, NULL, TRUE, FALSE, &bh);
4353 myh = (struct elf_link_hash_entry *) bh;
4354 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4355 myh->forced_local = 1;
4359 /* Generate a mapping symbol for the veneer section, and explicitly add an
4360 entry for that symbol to the code/data map for the section. */
4361 if (hash_table->vfp11_erratum_glue_size == 0)
4364 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
4365 ever requires this erratum fix. */
4366 _bfd_generic_link_add_one_symbol (link_info,
4367 hash_table->bfd_of_glue_owner, "$a",
4368 BSF_LOCAL, s, 0, NULL,
4371 myh = (struct elf_link_hash_entry *) bh;
4372 myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
4373 myh->forced_local = 1;
4375 /* The elf32_arm_init_maps function only cares about symbols from input
4376 BFDs. We must make a note of this generated mapping symbol
4377 ourselves so that code byteswapping works properly in
4378 elf32_arm_write_section. */
4379 elf32_arm_section_map_add (s, 'a', 0);
4382 s->size += VFP11_ERRATUM_VENEER_SIZE;
4383 hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE;
4384 hash_table->num_vfp11_fixes++;
4386 /* The offset of the veneer. */
4390 /* Note: we do not include the flag SEC_LINKER_CREATED, as that
4391 would prevent elf_link_input_bfd() from processing the contents
4393 #define ARM_GLUE_SECTION_FLAGS \
4394 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY)
4396 /* Create a fake section for use by the ARM backend of the linker. */
4399 arm_make_glue_section (bfd * abfd, const char * name)
4403 sec = bfd_get_section_by_name (abfd, name);
4408 sec = bfd_make_section_with_flags (abfd, name, ARM_GLUE_SECTION_FLAGS);
4411 || !bfd_set_section_alignment (abfd, sec, 2))
4414 /* Set the gc mark to prevent the section from being removed by garbage
4415 collection, despite the fact that no relocs refer to this section. */
4421 /* Add the glue sections to ABFD. This function is called from the
4422 linker scripts in ld/emultempl/{armelf}.em. */
4425 bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
4426 struct bfd_link_info *info)
4428 /* If we are only performing a partial
4429 link do not bother adding the glue. */
4430 if (info->relocatable)
4433 /* Linker stubs don't need glue. */
4434 if (!strcmp (abfd->filename, "linker stubs"))
4437 return arm_make_glue_section (abfd, ARM2THUMB_GLUE_SECTION_NAME)
4438 && arm_make_glue_section (abfd, THUMB2ARM_GLUE_SECTION_NAME)
4439 && arm_make_glue_section (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME)
4440 && arm_make_glue_section (abfd, ARM_BX_GLUE_SECTION_NAME);
4443 /* Select a BFD to be used to hold the sections used by the glue code.
4444 This function is called from the linker scripts in ld/emultempl/
4448 bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
4450 struct elf32_arm_link_hash_table *globals;
4452 /* If we are only performing a partial link
4453 do not bother getting a bfd to hold the glue. */
4454 if (info->relocatable)
4457 /* Make sure we don't attach the glue sections to a dynamic object. */
4458 BFD_ASSERT (!(abfd->flags & DYNAMIC));
4460 globals = elf32_arm_hash_table (info);
4462 BFD_ASSERT (globals != NULL);
4464 if (globals->bfd_of_glue_owner != NULL)
4467 /* Save the bfd for later use. */
4468 globals->bfd_of_glue_owner = abfd;
4474 check_use_blx (struct elf32_arm_link_hash_table *globals)
4476 if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
4478 globals->use_blx = 1;
4482 bfd_elf32_arm_process_before_allocation (bfd *abfd,
4483 struct bfd_link_info *link_info)
4485 Elf_Internal_Shdr *symtab_hdr;
4486 Elf_Internal_Rela *internal_relocs = NULL;
4487 Elf_Internal_Rela *irel, *irelend;
4488 bfd_byte *contents = NULL;
4491 struct elf32_arm_link_hash_table *globals;
4493 /* If we are only performing a partial link do not bother
4494 to construct any glue. */
4495 if (link_info->relocatable)
4498 /* Here we have a bfd that is to be included on the link. We have a
4499 hook to do reloc rummaging, before section sizes are nailed down. */
4500 globals = elf32_arm_hash_table (link_info);
4502 BFD_ASSERT (globals != NULL);
4504 check_use_blx (globals);
4506 if (globals->byteswap_code && !bfd_big_endian (abfd))
4508 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
4513 /* PR 5398: If we have not decided to include any loadable sections in
4514 the output then we will not have a glue owner bfd. This is OK, it
4515 just means that there is nothing else for us to do here. */
4516 if (globals->bfd_of_glue_owner == NULL)
4519 /* Rummage around all the relocs and map the glue vectors. */
4520 sec = abfd->sections;
4525 for (; sec != NULL; sec = sec->next)
4527 if (sec->reloc_count == 0)
4530 if ((sec->flags & SEC_EXCLUDE) != 0)
4533 symtab_hdr = & elf_symtab_hdr (abfd);
4535 /* Load the relocs. */
4537 = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, FALSE);
4539 if (internal_relocs == NULL)
4542 irelend = internal_relocs + sec->reloc_count;
4543 for (irel = internal_relocs; irel < irelend; irel++)
4546 unsigned long r_index;
4548 struct elf_link_hash_entry *h;
4550 r_type = ELF32_R_TYPE (irel->r_info);
4551 r_index = ELF32_R_SYM (irel->r_info);
4553 /* These are the only relocation types we care about. */
4554 if ( r_type != R_ARM_PC24
4555 && r_type != R_ARM_PLT32
4556 && r_type != R_ARM_JUMP24
4557 && r_type != R_ARM_THM_JUMP24
4558 && (r_type != R_ARM_V4BX || globals->fix_v4bx < 2))
4561 /* Get the section contents if we haven't done so already. */
4562 if (contents == NULL)
4564 /* Get cached copy if it exists. */
4565 if (elf_section_data (sec)->this_hdr.contents != NULL)
4566 contents = elf_section_data (sec)->this_hdr.contents;
4569 /* Go get them off disk. */
4570 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
4575 if (r_type == R_ARM_V4BX)
4579 reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf;
4580 record_arm_bx_glue (link_info, reg);
4584 /* If the relocation is not against a symbol it cannot concern us. */
4587 /* We don't care about local symbols. */
4588 if (r_index < symtab_hdr->sh_info)
4591 /* This is an external symbol. */
4592 r_index -= symtab_hdr->sh_info;
4593 h = (struct elf_link_hash_entry *)
4594 elf_sym_hashes (abfd)[r_index];
4596 /* If the relocation is against a static symbol it must be within
4597 the current section and so cannot be a cross ARM/Thumb relocation. */
4601 /* If the call will go through a PLT entry then we do not need
4603 if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1)
4611 /* This one is a call from arm code. We need to look up
4612 the target of the call. If it is a thumb target, we
4614 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
4615 && !(r_type == R_ARM_CALL && globals->use_blx))
4616 record_arm_to_thumb_glue (link_info, h);
4619 case R_ARM_THM_JUMP24:
4620 /* This one is a call from thumb code. We look
4621 up the target of the call. If it is not a thumb
4622 target, we insert glue. */
4623 if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC
4624 && !(globals->use_blx && r_type == R_ARM_THM_CALL)
4625 && h->root.type != bfd_link_hash_undefweak)
4626 record_thumb_to_arm_glue (link_info, h);
4634 if (contents != NULL
4635 && elf_section_data (sec)->this_hdr.contents != contents)
4639 if (internal_relocs != NULL
4640 && elf_section_data (sec)->relocs != internal_relocs)
4641 free (internal_relocs);
4642 internal_relocs = NULL;
4648 if (contents != NULL
4649 && elf_section_data (sec)->this_hdr.contents != contents)
4651 if (internal_relocs != NULL
4652 && elf_section_data (sec)->relocs != internal_relocs)
4653 free (internal_relocs);
4660 /* Initialise maps of ARM/Thumb/data for input BFDs. */
4663 bfd_elf32_arm_init_maps (bfd *abfd)
4665 Elf_Internal_Sym *isymbuf;
4666 Elf_Internal_Shdr *hdr;
4667 unsigned int i, localsyms;
4669 /* PR 7093: Make sure that we are dealing with an arm elf binary. */
4670 if (! is_arm_elf (abfd))
4673 if ((abfd->flags & DYNAMIC) != 0)
4676 hdr = & elf_symtab_hdr (abfd);
4677 localsyms = hdr->sh_info;
4679 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4680 should contain the number of local symbols, which should come before any
4681 global symbols. Mapping symbols are always local. */
4682 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL,
4685 /* No internal symbols read? Skip this BFD. */
4686 if (isymbuf == NULL)
4689 for (i = 0; i < localsyms; i++)
4691 Elf_Internal_Sym *isym = &isymbuf[i];
4692 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4696 && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
4698 name = bfd_elf_string_from_elf_section (abfd,
4699 hdr->sh_link, isym->st_name);
4701 if (bfd_is_arm_special_symbol_name (name,
4702 BFD_ARM_SPECIAL_SYM_TYPE_MAP))
4703 elf32_arm_section_map_add (sec, name[1], isym->st_value);
4710 bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info)
4712 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
4713 obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd);
4715 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
4716 if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7)
4718 switch (globals->vfp11_fix)
4720 case BFD_ARM_VFP11_FIX_DEFAULT:
4721 case BFD_ARM_VFP11_FIX_NONE:
4722 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
4726 /* Give a warning, but do as the user requests anyway. */
4727 (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum "
4728 "workaround is not necessary for target architecture"), obfd);
4731 else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT)
4732 /* For earlier architectures, we might need the workaround, but do not
4733 enable it by default. If users is running with broken hardware, they
4734 must enable the erratum fix explicitly. */
4735 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
4739 enum bfd_arm_vfp11_pipe
4747 /* Return a VFP register number. This is encoded as RX:X for single-precision
4748 registers, or X:RX for double-precision registers, where RX is the group of
4749 four bits in the instruction encoding and X is the single extension bit.
4750 RX and X fields are specified using their lowest (starting) bit. The return
4753 0...31: single-precision registers s0...s31
4754 32...63: double-precision registers d0...d31.
4756 Although X should be zero for VFP11 (encoding d0...d15 only), we might
4757 encounter VFP3 instructions, so we allow the full range for DP registers. */
4760 bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx,
4764 return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32;
4766 return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1);
4769 /* Set bits in *WMASK according to a register number REG as encoded by
4770 bfd_arm_vfp11_regno(). Ignore d16-d31. */
4773 bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg)
4778 *wmask |= 3 << ((reg - 32) * 2);
4781 /* Return TRUE if WMASK overwrites anything in REGS. */
4784 bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs)
4788 for (i = 0; i < numregs; i++)
4790 unsigned int reg = regs[i];
4792 if (reg < 32 && (wmask & (1 << reg)) != 0)
4800 if ((wmask & (3 << (reg * 2))) != 0)
4807 /* In this function, we're interested in two things: finding input registers
4808 for VFP data-processing instructions, and finding the set of registers which
4809 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
4810 hold the written set, so FLDM etc. are easy to deal with (we're only
4811 interested in 32 SP registers or 16 dp registers, due to the VFP version
4812 implemented by the chip in question). DP registers are marked by setting
4813 both SP registers in the write mask). */
4815 static enum bfd_arm_vfp11_pipe
4816 bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs,
4819 enum bfd_arm_vfp11_pipe pipe = VFP11_BAD;
4820 bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0;
4822 if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
4825 unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
4826 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
4828 pqrs = ((insn & 0x00800000) >> 20)
4829 | ((insn & 0x00300000) >> 19)
4830 | ((insn & 0x00000040) >> 6);
4834 case 0: /* fmac[sd]. */
4835 case 1: /* fnmac[sd]. */
4836 case 2: /* fmsc[sd]. */
4837 case 3: /* fnmsc[sd]. */
4839 bfd_arm_vfp11_write_mask (destmask, fd);
4841 regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
4846 case 4: /* fmul[sd]. */
4847 case 5: /* fnmul[sd]. */
4848 case 6: /* fadd[sd]. */
4849 case 7: /* fsub[sd]. */
4853 case 8: /* fdiv[sd]. */
4856 bfd_arm_vfp11_write_mask (destmask, fd);
4857 regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
4862 case 15: /* extended opcode. */
4864 unsigned int extn = ((insn >> 15) & 0x1e)
4865 | ((insn >> 7) & 1);
4869 case 0: /* fcpy[sd]. */
4870 case 1: /* fabs[sd]. */
4871 case 2: /* fneg[sd]. */
4872 case 8: /* fcmp[sd]. */
4873 case 9: /* fcmpe[sd]. */
4874 case 10: /* fcmpz[sd]. */
4875 case 11: /* fcmpez[sd]. */
4876 case 16: /* fuito[sd]. */
4877 case 17: /* fsito[sd]. */
4878 case 24: /* ftoui[sd]. */
4879 case 25: /* ftouiz[sd]. */
4880 case 26: /* ftosi[sd]. */
4881 case 27: /* ftosiz[sd]. */
4882 /* These instructions will not bounce due to underflow. */
4887 case 3: /* fsqrt[sd]. */
4888 /* fsqrt cannot underflow, but it can (perhaps) overwrite
4889 registers to cause the erratum in previous instructions. */
4890 bfd_arm_vfp11_write_mask (destmask, fd);
4894 case 15: /* fcvt{ds,sd}. */
4898 bfd_arm_vfp11_write_mask (destmask, fd);
4900 /* Only FCVTSD can underflow. */
4901 if ((insn & 0x100) != 0)
4920 /* Two-register transfer. */
4921 else if ((insn & 0x0fe00ed0) == 0x0c400a10)
4923 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
4925 if ((insn & 0x100000) == 0)
4928 bfd_arm_vfp11_write_mask (destmask, fm);
4931 bfd_arm_vfp11_write_mask (destmask, fm);
4932 bfd_arm_vfp11_write_mask (destmask, fm + 1);
4938 else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */
4940 int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
4941 unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1);
4945 case 0: /* Two-reg transfer. We should catch these above. */
4948 case 2: /* fldm[sdx]. */
4952 unsigned int i, offset = insn & 0xff;
4957 for (i = fd; i < fd + offset; i++)
4958 bfd_arm_vfp11_write_mask (destmask, i);
4962 case 4: /* fld[sd]. */
4964 bfd_arm_vfp11_write_mask (destmask, fd);
4973 /* Single-register transfer. Note L==0. */
4974 else if ((insn & 0x0f100e10) == 0x0e000a10)
4976 unsigned int opcode = (insn >> 21) & 7;
4977 unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7);
4981 case 0: /* fmsr/fmdlr. */
4982 case 1: /* fmdhr. */
4983 /* Mark fmdhr and fmdlr as writing to the whole of the DP
4984 destination register. I don't know if this is exactly right,
4985 but it is the conservative choice. */
4986 bfd_arm_vfp11_write_mask (destmask, fn);
5000 static int elf32_arm_compare_mapping (const void * a, const void * b);
5003 /* Look for potentially-troublesome code sequences which might trigger the
5004 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
5005 (available from ARM) for details of the erratum. A short version is
5006 described in ld.texinfo. */
5009 bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info)
5012 bfd_byte *contents = NULL;
5014 int regs[3], numregs = 0;
5015 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
5016 int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR);
5018 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
5019 The states transition as follows:
5021 0 -> 1 (vector) or 0 -> 2 (scalar)
5022 A VFP FMAC-pipeline instruction has been seen. Fill
5023 regs[0]..regs[numregs-1] with its input operands. Remember this
5024 instruction in 'first_fmac'.
5027 Any instruction, except for a VFP instruction which overwrites
5032 A VFP instruction has been seen which overwrites any of regs[*].
5033 We must make a veneer! Reset state to 0 before examining next
5037 If we fail to match anything in state 2, reset to state 0 and reset
5038 the instruction pointer to the instruction after 'first_fmac'.
5040 If the VFP11 vector mode is in use, there must be at least two unrelated
5041 instructions between anti-dependent VFP11 instructions to properly avoid
5042 triggering the erratum, hence the use of the extra state 1. */
5044 /* If we are only performing a partial link do not bother
5045 to construct any glue. */
5046 if (link_info->relocatable)
5049 /* Skip if this bfd does not correspond to an ELF image. */
5050 if (! is_arm_elf (abfd))
5053 /* We should have chosen a fix type by the time we get here. */
5054 BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT);
5056 if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE)
5059 /* Skip this BFD if it corresponds to an executable or dynamic object. */
5060 if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0)
5063 for (sec = abfd->sections; sec != NULL; sec = sec->next)
5065 unsigned int i, span, first_fmac = 0, veneer_of_insn = 0;
5066 struct _arm_elf_section_data *sec_data;
5068 /* If we don't have executable progbits, we're not interested in this
5069 section. Also skip if section is to be excluded. */
5070 if (elf_section_type (sec) != SHT_PROGBITS
5071 || (elf_section_flags (sec) & SHF_EXECINSTR) == 0
5072 || (sec->flags & SEC_EXCLUDE) != 0
5073 || sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
5074 || sec->output_section == bfd_abs_section_ptr
5075 || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0)
5078 sec_data = elf32_arm_section_data (sec);
5080 if (sec_data->mapcount == 0)
5083 if (elf_section_data (sec)->this_hdr.contents != NULL)
5084 contents = elf_section_data (sec)->this_hdr.contents;
5085 else if (! bfd_malloc_and_get_section (abfd, sec, &contents))
5088 qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map),
5089 elf32_arm_compare_mapping);
5091 for (span = 0; span < sec_data->mapcount; span++)
5093 unsigned int span_start = sec_data->map[span].vma;
5094 unsigned int span_end = (span == sec_data->mapcount - 1)
5095 ? sec->size : sec_data->map[span + 1].vma;
5096 char span_type = sec_data->map[span].type;
5098 /* FIXME: Only ARM mode is supported at present. We may need to
5099 support Thumb-2 mode also at some point. */
5100 if (span_type != 'a')
5103 for (i = span_start; i < span_end;)
5105 unsigned int next_i = i + 4;
5106 unsigned int insn = bfd_big_endian (abfd)
5107 ? (contents[i] << 24)
5108 | (contents[i + 1] << 16)
5109 | (contents[i + 2] << 8)
5111 : (contents[i + 3] << 24)
5112 | (contents[i + 2] << 16)
5113 | (contents[i + 1] << 8)
5115 unsigned int writemask = 0;
5116 enum bfd_arm_vfp11_pipe pipe;
5121 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs,
5123 /* I'm assuming the VFP11 erratum can trigger with denorm
5124 operands on either the FMAC or the DS pipeline. This might
5125 lead to slightly overenthusiastic veneer insertion. */
5126 if (pipe == VFP11_FMAC || pipe == VFP11_DS)
5128 state = use_vector ? 1 : 2;
5130 veneer_of_insn = insn;
5136 int other_regs[3], other_numregs;
5137 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
5140 if (pipe != VFP11_BAD
5141 && bfd_arm_vfp11_antidependency (writemask, regs,
5151 int other_regs[3], other_numregs;
5152 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
5155 if (pipe != VFP11_BAD
5156 && bfd_arm_vfp11_antidependency (writemask, regs,
5162 next_i = first_fmac + 4;
5168 abort (); /* Should be unreachable. */
5173 elf32_vfp11_erratum_list *newerr
5174 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
5177 errcount = ++(elf32_arm_section_data (sec)->erratumcount);
5179 newerr->u.b.vfp_insn = veneer_of_insn;
5184 newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER;
5191 record_vfp11_erratum_veneer (link_info, newerr, abfd, sec,
5196 newerr->next = sec_data->erratumlist;
5197 sec_data->erratumlist = newerr;
5206 if (contents != NULL
5207 && elf_section_data (sec)->this_hdr.contents != contents)
5215 if (contents != NULL
5216 && elf_section_data (sec)->this_hdr.contents != contents)
5222 /* Find virtual-memory addresses for VFP11 erratum veneers and return locations
5223 after sections have been laid out, using specially-named symbols. */
5226 bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd,
5227 struct bfd_link_info *link_info)
5230 struct elf32_arm_link_hash_table *globals;
5233 if (link_info->relocatable)
5236 /* Skip if this bfd does not correspond to an ELF image. */
5237 if (! is_arm_elf (abfd))
5240 globals = elf32_arm_hash_table (link_info);
5242 tmp_name = bfd_malloc ((bfd_size_type) strlen
5243 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
5245 for (sec = abfd->sections; sec != NULL; sec = sec->next)
5247 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
5248 elf32_vfp11_erratum_list *errnode = sec_data->erratumlist;
5250 for (; errnode != NULL; errnode = errnode->next)
5252 struct elf_link_hash_entry *myh;
5255 switch (errnode->type)
5257 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
5258 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER:
5259 /* Find veneer symbol. */
5260 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
5261 errnode->u.b.veneer->u.v.id);
5263 myh = elf_link_hash_lookup
5264 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
5267 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
5268 "`%s'"), abfd, tmp_name);
5270 vma = myh->root.u.def.section->output_section->vma
5271 + myh->root.u.def.section->output_offset
5272 + myh->root.u.def.value;
5274 errnode->u.b.veneer->vma = vma;
5277 case VFP11_ERRATUM_ARM_VENEER:
5278 case VFP11_ERRATUM_THUMB_VENEER:
5279 /* Find return location. */
5280 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
5283 myh = elf_link_hash_lookup
5284 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
5287 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
5288 "`%s'"), abfd, tmp_name);
5290 vma = myh->root.u.def.section->output_section->vma
5291 + myh->root.u.def.section->output_offset
5292 + myh->root.u.def.value;
5294 errnode->u.v.branch->vma = vma;
5307 /* Set target relocation values needed during linking. */
5310 bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd,
5311 struct bfd_link_info *link_info,
5313 char * target2_type,
5316 bfd_arm_vfp11_fix vfp11_fix,
5317 int no_enum_warn, int no_wchar_warn,
5320 struct elf32_arm_link_hash_table *globals;
5322 globals = elf32_arm_hash_table (link_info);
5324 globals->target1_is_rel = target1_is_rel;
5325 if (strcmp (target2_type, "rel") == 0)
5326 globals->target2_reloc = R_ARM_REL32;
5327 else if (strcmp (target2_type, "abs") == 0)
5328 globals->target2_reloc = R_ARM_ABS32;
5329 else if (strcmp (target2_type, "got-rel") == 0)
5330 globals->target2_reloc = R_ARM_GOT_PREL;
5333 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
5336 globals->fix_v4bx = fix_v4bx;
5337 globals->use_blx |= use_blx;
5338 globals->vfp11_fix = vfp11_fix;
5339 globals->pic_veneer = pic_veneer;
5341 BFD_ASSERT (is_arm_elf (output_bfd));
5342 elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
5343 elf_arm_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
5346 /* Replace the target offset of a Thumb bl or b.w instruction. */
5349 insert_thumb_branch (bfd *abfd, long int offset, bfd_byte *insn)
5355 BFD_ASSERT ((offset & 1) == 0);
5357 upper = bfd_get_16 (abfd, insn);
5358 lower = bfd_get_16 (abfd, insn + 2);
5359 reloc_sign = (offset < 0) ? 1 : 0;
5360 upper = (upper & ~(bfd_vma) 0x7ff)
5361 | ((offset >> 12) & 0x3ff)
5362 | (reloc_sign << 10);
5363 lower = (lower & ~(bfd_vma) 0x2fff)
5364 | (((!((offset >> 23) & 1)) ^ reloc_sign) << 13)
5365 | (((!((offset >> 22) & 1)) ^ reloc_sign) << 11)
5366 | ((offset >> 1) & 0x7ff);
5367 bfd_put_16 (abfd, upper, insn);
5368 bfd_put_16 (abfd, lower, insn + 2);
5371 /* Thumb code calling an ARM function. */
5374 elf32_thumb_to_arm_stub (struct bfd_link_info * info,
5378 asection * input_section,
5379 bfd_byte * hit_data,
5382 bfd_signed_vma addend,
5384 char **error_message)
5388 long int ret_offset;
5389 struct elf_link_hash_entry * myh;
5390 struct elf32_arm_link_hash_table * globals;
5392 myh = find_thumb_glue (info, name, error_message);
5396 globals = elf32_arm_hash_table (info);
5398 BFD_ASSERT (globals != NULL);
5399 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5401 my_offset = myh->root.u.def.value;
5403 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5404 THUMB2ARM_GLUE_SECTION_NAME);
5406 BFD_ASSERT (s != NULL);
5407 BFD_ASSERT (s->contents != NULL);
5408 BFD_ASSERT (s->output_section != NULL);
5410 if ((my_offset & 0x01) == 0x01)
5413 && sym_sec->owner != NULL
5414 && !INTERWORK_FLAG (sym_sec->owner))
5416 (*_bfd_error_handler)
5417 (_("%B(%s): warning: interworking not enabled.\n"
5418 " first occurrence: %B: thumb call to arm"),
5419 sym_sec->owner, input_bfd, name);
5425 myh->root.u.def.value = my_offset;
5427 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn,
5428 s->contents + my_offset);
5430 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn,
5431 s->contents + my_offset + 2);
5434 /* Address of destination of the stub. */
5435 ((bfd_signed_vma) val)
5437 /* Offset from the start of the current section
5438 to the start of the stubs. */
5440 /* Offset of the start of this stub from the start of the stubs. */
5442 /* Address of the start of the current section. */
5443 + s->output_section->vma)
5444 /* The branch instruction is 4 bytes into the stub. */
5446 /* ARM branches work from the pc of the instruction + 8. */
5449 put_arm_insn (globals, output_bfd,
5450 (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
5451 s->contents + my_offset + 4);
5454 BFD_ASSERT (my_offset <= globals->thumb_glue_size);
5456 /* Now go back and fix up the original BL insn to point to here. */
5458 /* Address of where the stub is located. */
5459 (s->output_section->vma + s->output_offset + my_offset)
5460 /* Address of where the BL is located. */
5461 - (input_section->output_section->vma + input_section->output_offset
5463 /* Addend in the relocation. */
5465 /* Biassing for PC-relative addressing. */
5468 insert_thumb_branch (input_bfd, ret_offset, hit_data - input_section->vma);
5473 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
5475 static struct elf_link_hash_entry *
5476 elf32_arm_create_thumb_stub (struct bfd_link_info * info,
5483 char ** error_message)
5486 long int ret_offset;
5487 struct elf_link_hash_entry * myh;
5488 struct elf32_arm_link_hash_table * globals;
5490 myh = find_arm_glue (info, name, error_message);
5494 globals = elf32_arm_hash_table (info);
5496 BFD_ASSERT (globals != NULL);
5497 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5499 my_offset = myh->root.u.def.value;
5501 if ((my_offset & 0x01) == 0x01)
5504 && sym_sec->owner != NULL
5505 && !INTERWORK_FLAG (sym_sec->owner))
5507 (*_bfd_error_handler)
5508 (_("%B(%s): warning: interworking not enabled.\n"
5509 " first occurrence: %B: arm call to thumb"),
5510 sym_sec->owner, input_bfd, name);
5514 myh->root.u.def.value = my_offset;
5516 if (info->shared || globals->root.is_relocatable_executable
5517 || globals->pic_veneer)
5519 /* For relocatable objects we can't use absolute addresses,
5520 so construct the address from a relative offset. */
5521 /* TODO: If the offset is small it's probably worth
5522 constructing the address with adds. */
5523 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn,
5524 s->contents + my_offset);
5525 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn,
5526 s->contents + my_offset + 4);
5527 put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
5528 s->contents + my_offset + 8);
5529 /* Adjust the offset by 4 for the position of the add,
5530 and 8 for the pipeline offset. */
5531 ret_offset = (val - (s->output_offset
5532 + s->output_section->vma
5535 bfd_put_32 (output_bfd, ret_offset,
5536 s->contents + my_offset + 12);
5538 else if (globals->use_blx)
5540 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn,
5541 s->contents + my_offset);
5543 /* It's a thumb address. Add the low order bit. */
5544 bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn,
5545 s->contents + my_offset + 4);
5549 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn,
5550 s->contents + my_offset);
5552 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn,
5553 s->contents + my_offset + 4);
5555 /* It's a thumb address. Add the low order bit. */
5556 bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
5557 s->contents + my_offset + 8);
5563 BFD_ASSERT (my_offset <= globals->arm_glue_size);
5568 /* Arm code calling a Thumb function. */
5571 elf32_arm_to_thumb_stub (struct bfd_link_info * info,
5575 asection * input_section,
5576 bfd_byte * hit_data,
5579 bfd_signed_vma addend,
5581 char **error_message)
5583 unsigned long int tmp;
5586 long int ret_offset;
5587 struct elf_link_hash_entry * myh;
5588 struct elf32_arm_link_hash_table * globals;
5590 globals = elf32_arm_hash_table (info);
5592 BFD_ASSERT (globals != NULL);
5593 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5595 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5596 ARM2THUMB_GLUE_SECTION_NAME);
5597 BFD_ASSERT (s != NULL);
5598 BFD_ASSERT (s->contents != NULL);
5599 BFD_ASSERT (s->output_section != NULL);
5601 myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd,
5602 sym_sec, val, s, error_message);
5606 my_offset = myh->root.u.def.value;
5607 tmp = bfd_get_32 (input_bfd, hit_data);
5608 tmp = tmp & 0xFF000000;
5610 /* Somehow these are both 4 too far, so subtract 8. */
5611 ret_offset = (s->output_offset
5613 + s->output_section->vma
5614 - (input_section->output_offset
5615 + input_section->output_section->vma
5619 tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
5621 bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
5626 /* Populate Arm stub for an exported Thumb function. */
5629 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf)
5631 struct bfd_link_info * info = (struct bfd_link_info *) inf;
5633 struct elf_link_hash_entry * myh;
5634 struct elf32_arm_link_hash_entry *eh;
5635 struct elf32_arm_link_hash_table * globals;
5638 char *error_message;
5640 eh = elf32_arm_hash_entry (h);
5641 /* Allocate stubs for exported Thumb functions on v4t. */
5642 if (eh->export_glue == NULL)
5645 globals = elf32_arm_hash_table (info);
5647 BFD_ASSERT (globals != NULL);
5648 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5650 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5651 ARM2THUMB_GLUE_SECTION_NAME);
5652 BFD_ASSERT (s != NULL);
5653 BFD_ASSERT (s->contents != NULL);
5654 BFD_ASSERT (s->output_section != NULL);
5656 sec = eh->export_glue->root.u.def.section;
5658 BFD_ASSERT (sec->output_section != NULL);
5660 val = eh->export_glue->root.u.def.value + sec->output_offset
5661 + sec->output_section->vma;
5663 myh = elf32_arm_create_thumb_stub (info, h->root.root.string,
5664 h->root.u.def.section->owner,
5665 globals->obfd, sec, val, s,
5671 /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */
5674 elf32_arm_bx_glue (struct bfd_link_info * info, int reg)
5679 struct elf32_arm_link_hash_table *globals;
5681 globals = elf32_arm_hash_table (info);
5683 BFD_ASSERT (globals != NULL);
5684 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5686 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5687 ARM_BX_GLUE_SECTION_NAME);
5688 BFD_ASSERT (s != NULL);
5689 BFD_ASSERT (s->contents != NULL);
5690 BFD_ASSERT (s->output_section != NULL);
5692 BFD_ASSERT (globals->bx_glue_offset[reg] & 2);
5694 glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3;
5696 if ((globals->bx_glue_offset[reg] & 1) == 0)
5698 p = s->contents + glue_addr;
5699 bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p);
5700 bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4);
5701 bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8);
5702 globals->bx_glue_offset[reg] |= 1;
5705 return glue_addr + s->output_section->vma + s->output_offset;
5708 /* Generate Arm stubs for exported Thumb symbols. */
5710 elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED,
5711 struct bfd_link_info *link_info)
5713 struct elf32_arm_link_hash_table * globals;
5715 if (link_info == NULL)
5716 /* Ignore this if we are not called by the ELF backend linker. */
5719 globals = elf32_arm_hash_table (link_info);
5720 /* If blx is available then exported Thumb symbols are OK and there is
5722 if (globals->use_blx)
5725 elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub,
5729 /* Some relocations map to different relocations depending on the
5730 target. Return the real relocation. */
5733 arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
5739 if (globals->target1_is_rel)
5745 return globals->target2_reloc;
5752 /* Return the base VMA address which should be subtracted from real addresses
5753 when resolving @dtpoff relocation.
5754 This is PT_TLS segment p_vaddr. */
5757 dtpoff_base (struct bfd_link_info *info)
5759 /* If tls_sec is NULL, we should have signalled an error already. */
5760 if (elf_hash_table (info)->tls_sec == NULL)
5762 return elf_hash_table (info)->tls_sec->vma;
5765 /* Return the relocation value for @tpoff relocation
5766 if STT_TLS virtual address is ADDRESS. */
5769 tpoff (struct bfd_link_info *info, bfd_vma address)
5771 struct elf_link_hash_table *htab = elf_hash_table (info);
5774 /* If tls_sec is NULL, we should have signalled an error already. */
5775 if (htab->tls_sec == NULL)
5777 base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
5778 return address - htab->tls_sec->vma + base;
5781 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
5782 VALUE is the relocation value. */
5784 static bfd_reloc_status_type
5785 elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value)
5788 return bfd_reloc_overflow;
5790 value |= bfd_get_32 (abfd, data) & 0xfffff000;
5791 bfd_put_32 (abfd, value, data);
5792 return bfd_reloc_ok;
5795 /* For a given value of n, calculate the value of G_n as required to
5796 deal with group relocations. We return it in the form of an
5797 encoded constant-and-rotation, together with the final residual. If n is
5798 specified as less than zero, then final_residual is filled with the
5799 input value and no further action is performed. */
5802 calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual)
5806 bfd_vma encoded_g_n = 0;
5807 bfd_vma residual = value; /* Also known as Y_n. */
5809 for (current_n = 0; current_n <= n; current_n++)
5813 /* Calculate which part of the value to mask. */
5820 /* Determine the most significant bit in the residual and
5821 align the resulting value to a 2-bit boundary. */
5822 for (msb = 30; msb >= 0; msb -= 2)
5823 if (residual & (3 << msb))
5826 /* The desired shift is now (msb - 6), or zero, whichever
5833 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
5834 g_n = residual & (0xff << shift);
5835 encoded_g_n = (g_n >> shift)
5836 | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8);
5838 /* Calculate the residual for the next time around. */
5842 *final_residual = residual;
5847 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
5848 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
5851 identify_add_or_sub (bfd_vma insn)
5853 int opcode = insn & 0x1e00000;
5855 if (opcode == 1 << 23) /* ADD */
5858 if (opcode == 1 << 22) /* SUB */
5864 /* Perform a relocation as part of a final link. */
5866 static bfd_reloc_status_type
5867 elf32_arm_final_link_relocate (reloc_howto_type * howto,
5870 asection * input_section,
5871 bfd_byte * contents,
5872 Elf_Internal_Rela * rel,
5874 struct bfd_link_info * info,
5876 const char * sym_name,
5878 struct elf_link_hash_entry * h,
5879 bfd_boolean * unresolved_reloc_p,
5880 char ** error_message)
5882 unsigned long r_type = howto->type;
5883 unsigned long r_symndx;
5884 bfd_byte * hit_data = contents + rel->r_offset;
5885 bfd * dynobj = NULL;
5886 Elf_Internal_Shdr * symtab_hdr;
5887 struct elf_link_hash_entry ** sym_hashes;
5888 bfd_vma * local_got_offsets;
5889 asection * sgot = NULL;
5890 asection * splt = NULL;
5891 asection * sreloc = NULL;
5893 bfd_signed_vma signed_addend;
5894 struct elf32_arm_link_hash_table * globals;
5896 globals = elf32_arm_hash_table (info);
5898 BFD_ASSERT (is_arm_elf (input_bfd));
5900 /* Some relocation types map to different relocations depending on the
5901 target. We pick the right one here. */
5902 r_type = arm_real_reloc_type (globals, r_type);
5903 if (r_type != howto->type)
5904 howto = elf32_arm_howto_from_type (r_type);
5906 /* If the start address has been set, then set the EF_ARM_HASENTRY
5907 flag. Setting this more than once is redundant, but the cost is
5908 not too high, and it keeps the code simple.
5910 The test is done here, rather than somewhere else, because the
5911 start address is only set just before the final link commences.
5913 Note - if the user deliberately sets a start address of 0, the
5914 flag will not be set. */
5915 if (bfd_get_start_address (output_bfd) != 0)
5916 elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
5918 dynobj = elf_hash_table (info)->dynobj;
5921 sgot = bfd_get_section_by_name (dynobj, ".got");
5922 splt = bfd_get_section_by_name (dynobj, ".plt");
5924 symtab_hdr = & elf_symtab_hdr (input_bfd);
5925 sym_hashes = elf_sym_hashes (input_bfd);
5926 local_got_offsets = elf_local_got_offsets (input_bfd);
5927 r_symndx = ELF32_R_SYM (rel->r_info);
5929 if (globals->use_rel)
5931 addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
5933 if (addend & ((howto->src_mask + 1) >> 1))
5936 signed_addend &= ~ howto->src_mask;
5937 signed_addend |= addend;
5940 signed_addend = addend;
5943 addend = signed_addend = rel->r_addend;
5948 /* We don't need to find a value for this symbol. It's just a
5950 *unresolved_reloc_p = FALSE;
5951 return bfd_reloc_ok;
5954 if (!globals->vxworks_p)
5955 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
5959 case R_ARM_ABS32_NOI:
5961 case R_ARM_REL32_NOI:
5967 /* Handle relocations which should use the PLT entry. ABS32/REL32
5968 will use the symbol's value, which may point to a PLT entry, but we
5969 don't need to handle that here. If we created a PLT entry, all
5970 branches in this object should go to it. */
5971 if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32
5972 && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI)
5975 && h->plt.offset != (bfd_vma) -1)
5977 /* If we've created a .plt section, and assigned a PLT entry to
5978 this function, it should not be known to bind locally. If
5979 it were, we would have cleared the PLT entry. */
5980 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
5982 value = (splt->output_section->vma
5983 + splt->output_offset
5985 *unresolved_reloc_p = FALSE;
5986 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5987 contents, rel->r_offset, value,
5991 /* When generating a shared object or relocatable executable, these
5992 relocations are copied into the output file to be resolved at
5994 if ((info->shared || globals->root.is_relocatable_executable)
5995 && (input_section->flags & SEC_ALLOC)
5996 && !(elf32_arm_hash_table (info)->vxworks_p
5997 && strcmp (input_section->output_section->name,
5999 && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI)
6000 || !SYMBOL_CALLS_LOCAL (info, h))
6002 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6003 || h->root.type != bfd_link_hash_undefweak)
6004 && r_type != R_ARM_PC24
6005 && r_type != R_ARM_CALL
6006 && r_type != R_ARM_JUMP24
6007 && r_type != R_ARM_PREL31
6008 && r_type != R_ARM_PLT32)
6010 Elf_Internal_Rela outrel;
6012 bfd_boolean skip, relocate;
6014 *unresolved_reloc_p = FALSE;
6018 sreloc = _bfd_elf_get_dynamic_reloc_section (input_bfd, input_section,
6019 ! globals->use_rel);
6022 return bfd_reloc_notsupported;
6028 outrel.r_addend = addend;
6030 _bfd_elf_section_offset (output_bfd, info, input_section,
6032 if (outrel.r_offset == (bfd_vma) -1)
6034 else if (outrel.r_offset == (bfd_vma) -2)
6035 skip = TRUE, relocate = TRUE;
6036 outrel.r_offset += (input_section->output_section->vma
6037 + input_section->output_offset);
6040 memset (&outrel, 0, sizeof outrel);
6045 || !h->def_regular))
6046 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
6051 /* This symbol is local, or marked to become local. */
6052 if (sym_flags == STT_ARM_TFUNC)
6054 if (globals->symbian_p)
6058 /* On Symbian OS, the data segment and text segement
6059 can be relocated independently. Therefore, we
6060 must indicate the segment to which this
6061 relocation is relative. The BPABI allows us to
6062 use any symbol in the right segment; we just use
6063 the section symbol as it is convenient. (We
6064 cannot use the symbol given by "h" directly as it
6065 will not appear in the dynamic symbol table.)
6067 Note that the dynamic linker ignores the section
6068 symbol value, so we don't subtract osec->vma
6069 from the emitted reloc addend. */
6071 osec = sym_sec->output_section;
6073 osec = input_section->output_section;
6074 symbol = elf_section_data (osec)->dynindx;
6077 struct elf_link_hash_table *htab = elf_hash_table (info);
6079 if ((osec->flags & SEC_READONLY) == 0
6080 && htab->data_index_section != NULL)
6081 osec = htab->data_index_section;
6083 osec = htab->text_index_section;
6084 symbol = elf_section_data (osec)->dynindx;
6086 BFD_ASSERT (symbol != 0);
6089 /* On SVR4-ish systems, the dynamic loader cannot
6090 relocate the text and data segments independently,
6091 so the symbol does not matter. */
6093 outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
6094 if (globals->use_rel)
6097 outrel.r_addend += value;
6100 loc = sreloc->contents;
6101 loc += sreloc->reloc_count++ * RELOC_SIZE (globals);
6102 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
6104 /* If this reloc is against an external symbol, we do not want to
6105 fiddle with the addend. Otherwise, we need to include the symbol
6106 value so that it becomes an addend for the dynamic reloc. */
6108 return bfd_reloc_ok;
6110 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6111 contents, rel->r_offset, value,
6114 else switch (r_type)
6117 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
6119 case R_ARM_XPC25: /* Arm BLX instruction. */
6122 case R_ARM_PC24: /* Arm B/BL instruction. */
6126 bfd_signed_vma branch_offset;
6127 struct elf32_arm_stub_hash_entry *stub_entry = NULL;
6129 from = (input_section->output_section->vma
6130 + input_section->output_offset
6132 branch_offset = (bfd_signed_vma)(value - from);
6134 if (r_type == R_ARM_XPC25)
6136 /* Check for Arm calling Arm function. */
6137 /* FIXME: Should we translate the instruction into a BL
6138 instruction instead ? */
6139 if (sym_flags != STT_ARM_TFUNC)
6140 (*_bfd_error_handler)
6141 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
6143 h ? h->root.root.string : "(local)");
6145 else if (r_type != R_ARM_CALL)
6147 /* Check for Arm calling Thumb function. */
6148 if (sym_flags == STT_ARM_TFUNC)
6150 if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
6151 output_bfd, input_section,
6152 hit_data, sym_sec, rel->r_offset,
6153 signed_addend, value,
6155 return bfd_reloc_ok;
6157 return bfd_reloc_dangerous;
6161 /* Check if a stub has to be inserted because the
6162 destination is too far or we are changing mode. */
6163 if (r_type == R_ARM_CALL)
6165 if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET
6166 || branch_offset < ARM_MAX_BWD_BRANCH_OFFSET
6167 || sym_flags == STT_ARM_TFUNC)
6169 /* The target is out of reach, so redirect the
6170 branch to the local stub for this function. */
6172 stub_entry = elf32_arm_get_stub_entry (input_section,
6175 if (stub_entry != NULL)
6176 value = (stub_entry->stub_offset
6177 + stub_entry->stub_sec->output_offset
6178 + stub_entry->stub_sec->output_section->vma);
6182 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
6184 S is the address of the symbol in the relocation.
6185 P is address of the instruction being relocated.
6186 A is the addend (extracted from the instruction) in bytes.
6188 S is held in 'value'.
6189 P is the base address of the section containing the
6190 instruction plus the offset of the reloc into that
6192 (input_section->output_section->vma +
6193 input_section->output_offset +
6195 A is the addend, converted into bytes, ie:
6198 Note: None of these operations have knowledge of the pipeline
6199 size of the processor, thus it is up to the assembler to
6200 encode this information into the addend. */
6201 value -= (input_section->output_section->vma
6202 + input_section->output_offset);
6203 value -= rel->r_offset;
6204 if (globals->use_rel)
6205 value += (signed_addend << howto->size);
6207 /* RELA addends do not have to be adjusted by howto->size. */
6208 value += signed_addend;
6210 signed_addend = value;
6211 signed_addend >>= howto->rightshift;
6213 /* A branch to an undefined weak symbol is turned into a jump to
6214 the next instruction. */
6215 if (h && h->root.type == bfd_link_hash_undefweak)
6217 value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000)
6222 /* Perform a signed range check. */
6223 if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
6224 || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
6225 return bfd_reloc_overflow;
6227 addend = (value & 2);
6229 value = (signed_addend & howto->dst_mask)
6230 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
6232 /* Set the H bit in the BLX instruction. */
6233 if (sym_flags == STT_ARM_TFUNC)
6238 value &= ~(bfd_vma)(1 << 24);
6240 if (r_type == R_ARM_CALL)
6242 /* Select the correct instruction (BL or BLX). */
6243 /* Only if we are not handling a BL to a stub. In this
6244 case, mode switching is performed by the stub. */
6245 if (sym_flags == STT_ARM_TFUNC && !stub_entry)
6249 value &= ~(bfd_vma)(1 << 28);
6259 if (sym_flags == STT_ARM_TFUNC)
6263 case R_ARM_ABS32_NOI:
6269 if (sym_flags == STT_ARM_TFUNC)
6271 value -= (input_section->output_section->vma
6272 + input_section->output_offset + rel->r_offset);
6275 case R_ARM_REL32_NOI:
6277 value -= (input_section->output_section->vma
6278 + input_section->output_offset + rel->r_offset);
6282 value -= (input_section->output_section->vma
6283 + input_section->output_offset + rel->r_offset);
6284 value += signed_addend;
6285 if (! h || h->root.type != bfd_link_hash_undefweak)
6287 /* Check for overflow. */
6288 if ((value ^ (value >> 1)) & (1 << 30))
6289 return bfd_reloc_overflow;
6291 value &= 0x7fffffff;
6292 value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
6293 if (sym_flags == STT_ARM_TFUNC)
6298 bfd_put_32 (input_bfd, value, hit_data);
6299 return bfd_reloc_ok;
6303 if ((long) value > 0x7f || (long) value < -0x80)
6304 return bfd_reloc_overflow;
6306 bfd_put_8 (input_bfd, value, hit_data);
6307 return bfd_reloc_ok;
6312 if ((long) value > 0x7fff || (long) value < -0x8000)
6313 return bfd_reloc_overflow;
6315 bfd_put_16 (input_bfd, value, hit_data);
6316 return bfd_reloc_ok;
6318 case R_ARM_THM_ABS5:
6319 /* Support ldr and str instructions for the thumb. */
6320 if (globals->use_rel)
6322 /* Need to refetch addend. */
6323 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
6324 /* ??? Need to determine shift amount from operand size. */
6325 addend >>= howto->rightshift;
6329 /* ??? Isn't value unsigned? */
6330 if ((long) value > 0x1f || (long) value < -0x10)
6331 return bfd_reloc_overflow;
6333 /* ??? Value needs to be properly shifted into place first. */
6334 value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
6335 bfd_put_16 (input_bfd, value, hit_data);
6336 return bfd_reloc_ok;
6338 case R_ARM_THM_ALU_PREL_11_0:
6339 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
6342 bfd_signed_vma relocation;
6344 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
6345 | bfd_get_16 (input_bfd, hit_data + 2);
6347 if (globals->use_rel)
6349 signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4)
6350 | ((insn & (1 << 26)) >> 15);
6351 if (insn & 0xf00000)
6352 signed_addend = -signed_addend;
6355 relocation = value + signed_addend;
6356 relocation -= (input_section->output_section->vma
6357 + input_section->output_offset
6360 value = abs (relocation);
6362 if (value >= 0x1000)
6363 return bfd_reloc_overflow;
6365 insn = (insn & 0xfb0f8f00) | (value & 0xff)
6366 | ((value & 0x700) << 4)
6367 | ((value & 0x800) << 15);
6371 bfd_put_16 (input_bfd, insn >> 16, hit_data);
6372 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
6374 return bfd_reloc_ok;
6377 case R_ARM_THM_PC12:
6378 /* Corresponds to: ldr.w reg, [pc, #offset]. */
6381 bfd_signed_vma relocation;
6383 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
6384 | bfd_get_16 (input_bfd, hit_data + 2);
6386 if (globals->use_rel)
6388 signed_addend = insn & 0xfff;
6389 if (!(insn & (1 << 23)))
6390 signed_addend = -signed_addend;
6393 relocation = value + signed_addend;
6394 relocation -= (input_section->output_section->vma
6395 + input_section->output_offset
6398 value = abs (relocation);
6400 if (value >= 0x1000)
6401 return bfd_reloc_overflow;
6403 insn = (insn & 0xff7ff000) | value;
6404 if (relocation >= 0)
6407 bfd_put_16 (input_bfd, insn >> 16, hit_data);
6408 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
6410 return bfd_reloc_ok;
6413 case R_ARM_THM_XPC22:
6414 case R_ARM_THM_CALL:
6415 case R_ARM_THM_JUMP24:
6416 /* Thumb BL (branch long instruction). */
6420 bfd_boolean overflow = FALSE;
6421 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
6422 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
6423 bfd_signed_vma reloc_signed_max;
6424 bfd_signed_vma reloc_signed_min;
6426 bfd_signed_vma signed_check;
6428 int thumb2 = using_thumb2 (globals);
6430 /* A branch to an undefined weak symbol is turned into a jump to
6431 the next instruction unless a PLT entry will be created. */
6432 if (h && h->root.type == bfd_link_hash_undefweak
6433 && !(splt != NULL && h->plt.offset != (bfd_vma) -1))
6435 bfd_put_16 (input_bfd, 0xe000, hit_data);
6436 bfd_put_16 (input_bfd, 0xbf00, hit_data + 2);
6437 return bfd_reloc_ok;
6440 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
6441 with Thumb-1) involving the J1 and J2 bits. */
6442 if (globals->use_rel)
6444 bfd_vma s = (upper_insn & (1 << 10)) >> 10;
6445 bfd_vma upper = upper_insn & 0x3ff;
6446 bfd_vma lower = lower_insn & 0x7ff;
6447 bfd_vma j1 = (lower_insn & (1 << 13)) >> 13;
6448 bfd_vma j2 = (lower_insn & (1 << 11)) >> 11;
6449 bfd_vma i1 = j1 ^ s ? 0 : 1;
6450 bfd_vma i2 = j2 ^ s ? 0 : 1;
6452 addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1);
6454 addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24);
6456 signed_addend = addend;
6459 if (r_type == R_ARM_THM_XPC22)
6461 /* Check for Thumb to Thumb call. */
6462 /* FIXME: Should we translate the instruction into a BL
6463 instruction instead ? */
6464 if (sym_flags == STT_ARM_TFUNC)
6465 (*_bfd_error_handler)
6466 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
6468 h ? h->root.root.string : "(local)");
6472 /* If it is not a call to Thumb, assume call to Arm.
6473 If it is a call relative to a section name, then it is not a
6474 function call at all, but rather a long jump. Calls through
6475 the PLT do not require stubs. */
6476 if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION
6477 && (h == NULL || splt == NULL
6478 || h->plt.offset == (bfd_vma) -1))
6480 if (globals->use_blx && r_type == R_ARM_THM_CALL)
6482 /* Convert BL to BLX. */
6483 lower_insn = (lower_insn & ~0x1000) | 0x0800;
6485 else if (r_type != R_ARM_THM_CALL)
6487 if (elf32_thumb_to_arm_stub
6488 (info, sym_name, input_bfd, output_bfd, input_section,
6489 hit_data, sym_sec, rel->r_offset, signed_addend, value,
6491 return bfd_reloc_ok;
6493 return bfd_reloc_dangerous;
6496 else if (sym_flags == STT_ARM_TFUNC && globals->use_blx
6497 && r_type == R_ARM_THM_CALL)
6499 /* Make sure this is a BL. */
6500 lower_insn |= 0x1800;
6504 /* Handle calls via the PLT. */
6505 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
6507 value = (splt->output_section->vma
6508 + splt->output_offset
6510 if (globals->use_blx && r_type == R_ARM_THM_CALL)
6512 /* If the Thumb BLX instruction is available, convert the
6513 BL to a BLX instruction to call the ARM-mode PLT entry. */
6514 lower_insn = (lower_insn & ~0x1000) | 0x0800;
6517 /* Target the Thumb stub before the ARM PLT entry. */
6518 value -= PLT_THUMB_STUB_SIZE;
6519 *unresolved_reloc_p = FALSE;
6522 if (r_type == R_ARM_THM_CALL)
6524 /* Check if a stub has to be inserted because the destination
6527 bfd_signed_vma branch_offset;
6528 struct elf32_arm_stub_hash_entry *stub_entry = NULL;
6530 from = (input_section->output_section->vma
6531 + input_section->output_offset
6533 branch_offset = (bfd_signed_vma)(value - from);
6536 && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET
6537 || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET)))
6540 && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET
6541 || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))
6542 || ((sym_flags != STT_ARM_TFUNC) && !globals->use_blx))
6544 /* The target is out of reach or we are changing modes, so
6545 redirect the branch to the local stub for this
6547 stub_entry = elf32_arm_get_stub_entry (input_section,
6550 if (stub_entry != NULL)
6551 value = (stub_entry->stub_offset
6552 + stub_entry->stub_sec->output_offset
6553 + stub_entry->stub_sec->output_section->vma);
6555 /* If this call becomes a call to Arm, force BLX. */
6556 if (globals->use_blx)
6559 && !arm_stub_is_thumb (stub_entry->stub_type))
6560 || (sym_flags != STT_ARM_TFUNC))
6561 lower_insn = (lower_insn & ~0x1000) | 0x0800;
6566 relocation = value + signed_addend;
6568 relocation -= (input_section->output_section->vma
6569 + input_section->output_offset
6572 check = relocation >> howto->rightshift;
6574 /* If this is a signed value, the rightshift just dropped
6575 leading 1 bits (assuming twos complement). */
6576 if ((bfd_signed_vma) relocation >= 0)
6577 signed_check = check;
6579 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
6581 /* Calculate the permissable maximum and minimum values for
6582 this relocation according to whether we're relocating for
6584 bitsize = howto->bitsize;
6587 reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift;
6588 reloc_signed_min = ~reloc_signed_max;
6590 /* Assumes two's complement. */
6591 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
6594 if ((lower_insn & 0x5000) == 0x4000)
6595 /* For a BLX instruction, make sure that the relocation is rounded up
6596 to a word boundary. This follows the semantics of the instruction
6597 which specifies that bit 1 of the target address will come from bit
6598 1 of the base address. */
6599 relocation = (relocation + 2) & ~ 3;
6601 /* Put RELOCATION back into the insn. Assumes two's complement.
6602 We use the Thumb-2 encoding, which is safe even if dealing with
6603 a Thumb-1 instruction by virtue of our overflow check above. */
6604 reloc_sign = (signed_check < 0) ? 1 : 0;
6605 upper_insn = (upper_insn & ~(bfd_vma) 0x7ff)
6606 | ((relocation >> 12) & 0x3ff)
6607 | (reloc_sign << 10);
6608 lower_insn = (lower_insn & ~(bfd_vma) 0x2fff)
6609 | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13)
6610 | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11)
6611 | ((relocation >> 1) & 0x7ff);
6613 /* Put the relocated value back in the object file: */
6614 bfd_put_16 (input_bfd, upper_insn, hit_data);
6615 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
6617 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
6621 case R_ARM_THM_JUMP19:
6622 /* Thumb32 conditional branch instruction. */
6625 bfd_boolean overflow = FALSE;
6626 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
6627 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
6628 bfd_signed_vma reloc_signed_max = 0xffffe;
6629 bfd_signed_vma reloc_signed_min = -0x100000;
6630 bfd_signed_vma signed_check;
6632 /* Need to refetch the addend, reconstruct the top three bits,
6633 and squish the two 11 bit pieces together. */
6634 if (globals->use_rel)
6636 bfd_vma S = (upper_insn & 0x0400) >> 10;
6637 bfd_vma upper = (upper_insn & 0x003f);
6638 bfd_vma J1 = (lower_insn & 0x2000) >> 13;
6639 bfd_vma J2 = (lower_insn & 0x0800) >> 11;
6640 bfd_vma lower = (lower_insn & 0x07ff);
6645 upper -= 0x0100; /* Sign extend. */
6647 addend = (upper << 12) | (lower << 1);
6648 signed_addend = addend;
6651 /* Handle calls via the PLT. */
6652 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
6654 value = (splt->output_section->vma
6655 + splt->output_offset
6657 /* Target the Thumb stub before the ARM PLT entry. */
6658 value -= PLT_THUMB_STUB_SIZE;
6659 *unresolved_reloc_p = FALSE;
6662 /* ??? Should handle interworking? GCC might someday try to
6663 use this for tail calls. */
6665 relocation = value + signed_addend;
6666 relocation -= (input_section->output_section->vma
6667 + input_section->output_offset
6669 signed_check = (bfd_signed_vma) relocation;
6671 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
6674 /* Put RELOCATION back into the insn. */
6676 bfd_vma S = (relocation & 0x00100000) >> 20;
6677 bfd_vma J2 = (relocation & 0x00080000) >> 19;
6678 bfd_vma J1 = (relocation & 0x00040000) >> 18;
6679 bfd_vma hi = (relocation & 0x0003f000) >> 12;
6680 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
6682 upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi;
6683 lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
6686 /* Put the relocated value back in the object file: */
6687 bfd_put_16 (input_bfd, upper_insn, hit_data);
6688 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
6690 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
6693 case R_ARM_THM_JUMP11:
6694 case R_ARM_THM_JUMP8:
6695 case R_ARM_THM_JUMP6:
6696 /* Thumb B (branch) instruction). */
6698 bfd_signed_vma relocation;
6699 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
6700 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
6701 bfd_signed_vma signed_check;
6703 /* CZB cannot jump backward. */
6704 if (r_type == R_ARM_THM_JUMP6)
6705 reloc_signed_min = 0;
6707 if (globals->use_rel)
6709 /* Need to refetch addend. */
6710 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
6711 if (addend & ((howto->src_mask + 1) >> 1))
6714 signed_addend &= ~ howto->src_mask;
6715 signed_addend |= addend;
6718 signed_addend = addend;
6719 /* The value in the insn has been right shifted. We need to
6720 undo this, so that we can perform the address calculation
6721 in terms of bytes. */
6722 signed_addend <<= howto->rightshift;
6724 relocation = value + signed_addend;
6726 relocation -= (input_section->output_section->vma
6727 + input_section->output_offset
6730 relocation >>= howto->rightshift;
6731 signed_check = relocation;
6733 if (r_type == R_ARM_THM_JUMP6)
6734 relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
6736 relocation &= howto->dst_mask;
6737 relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
6739 bfd_put_16 (input_bfd, relocation, hit_data);
6741 /* Assumes two's complement. */
6742 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
6743 return bfd_reloc_overflow;
6745 return bfd_reloc_ok;
6748 case R_ARM_ALU_PCREL7_0:
6749 case R_ARM_ALU_PCREL15_8:
6750 case R_ARM_ALU_PCREL23_15:
6755 insn = bfd_get_32 (input_bfd, hit_data);
6756 if (globals->use_rel)
6758 /* Extract the addend. */
6759 addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
6760 signed_addend = addend;
6762 relocation = value + signed_addend;
6764 relocation -= (input_section->output_section->vma
6765 + input_section->output_offset
6767 insn = (insn & ~0xfff)
6768 | ((howto->bitpos << 7) & 0xf00)
6769 | ((relocation >> howto->bitpos) & 0xff);
6770 bfd_put_32 (input_bfd, value, hit_data);
6772 return bfd_reloc_ok;
6774 case R_ARM_GNU_VTINHERIT:
6775 case R_ARM_GNU_VTENTRY:
6776 return bfd_reloc_ok;
6778 case R_ARM_GOTOFF32:
6779 /* Relocation is relative to the start of the
6780 global offset table. */
6782 BFD_ASSERT (sgot != NULL);
6784 return bfd_reloc_notsupported;
6786 /* If we are addressing a Thumb function, we need to adjust the
6787 address by one, so that attempts to call the function pointer will
6788 correctly interpret it as Thumb code. */
6789 if (sym_flags == STT_ARM_TFUNC)
6792 /* Note that sgot->output_offset is not involved in this
6793 calculation. We always want the start of .got. If we
6794 define _GLOBAL_OFFSET_TABLE in a different way, as is
6795 permitted by the ABI, we might have to change this
6797 value -= sgot->output_section->vma;
6798 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6799 contents, rel->r_offset, value,
6803 /* Use global offset table as symbol value. */
6804 BFD_ASSERT (sgot != NULL);
6807 return bfd_reloc_notsupported;
6809 *unresolved_reloc_p = FALSE;
6810 value = sgot->output_section->vma;
6811 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6812 contents, rel->r_offset, value,
6816 case R_ARM_GOT_PREL:
6817 /* Relocation is to the entry for this symbol in the
6818 global offset table. */
6820 return bfd_reloc_notsupported;
6827 off = h->got.offset;
6828 BFD_ASSERT (off != (bfd_vma) -1);
6829 dyn = globals->root.dynamic_sections_created;
6831 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
6833 && SYMBOL_REFERENCES_LOCAL (info, h))
6834 || (ELF_ST_VISIBILITY (h->other)
6835 && h->root.type == bfd_link_hash_undefweak))
6837 /* This is actually a static link, or it is a -Bsymbolic link
6838 and the symbol is defined locally. We must initialize this
6839 entry in the global offset table. Since the offset must
6840 always be a multiple of 4, we use the least significant bit
6841 to record whether we have initialized it already.
6843 When doing a dynamic link, we create a .rel(a).got relocation
6844 entry to initialize the value. This is done in the
6845 finish_dynamic_symbol routine. */
6850 /* If we are addressing a Thumb function, we need to
6851 adjust the address by one, so that attempts to
6852 call the function pointer will correctly
6853 interpret it as Thumb code. */
6854 if (sym_flags == STT_ARM_TFUNC)
6857 bfd_put_32 (output_bfd, value, sgot->contents + off);
6862 *unresolved_reloc_p = FALSE;
6864 value = sgot->output_offset + off;
6870 BFD_ASSERT (local_got_offsets != NULL &&
6871 local_got_offsets[r_symndx] != (bfd_vma) -1);
6873 off = local_got_offsets[r_symndx];
6875 /* The offset must always be a multiple of 4. We use the
6876 least significant bit to record whether we have already
6877 generated the necessary reloc. */
6882 /* If we are addressing a Thumb function, we need to
6883 adjust the address by one, so that attempts to
6884 call the function pointer will correctly
6885 interpret it as Thumb code. */
6886 if (sym_flags == STT_ARM_TFUNC)
6889 if (globals->use_rel)
6890 bfd_put_32 (output_bfd, value, sgot->contents + off);
6895 Elf_Internal_Rela outrel;
6898 srelgot = (bfd_get_section_by_name
6899 (dynobj, RELOC_SECTION (globals, ".got")));
6900 BFD_ASSERT (srelgot != NULL);
6902 outrel.r_addend = addend + value;
6903 outrel.r_offset = (sgot->output_section->vma
6904 + sgot->output_offset
6906 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
6907 loc = srelgot->contents;
6908 loc += srelgot->reloc_count++ * RELOC_SIZE (globals);
6909 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
6912 local_got_offsets[r_symndx] |= 1;
6915 value = sgot->output_offset + off;
6917 if (r_type != R_ARM_GOT32)
6918 value += sgot->output_section->vma;
6920 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6921 contents, rel->r_offset, value,
6924 case R_ARM_TLS_LDO32:
6925 value = value - dtpoff_base (info);
6927 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6928 contents, rel->r_offset, value,
6931 case R_ARM_TLS_LDM32:
6935 if (globals->sgot == NULL)
6938 off = globals->tls_ldm_got.offset;
6944 /* If we don't know the module number, create a relocation
6948 Elf_Internal_Rela outrel;
6951 if (globals->srelgot == NULL)
6954 outrel.r_addend = 0;
6955 outrel.r_offset = (globals->sgot->output_section->vma
6956 + globals->sgot->output_offset + off);
6957 outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
6959 if (globals->use_rel)
6960 bfd_put_32 (output_bfd, outrel.r_addend,
6961 globals->sgot->contents + off);
6963 loc = globals->srelgot->contents;
6964 loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals);
6965 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
6968 bfd_put_32 (output_bfd, 1, globals->sgot->contents + off);
6970 globals->tls_ldm_got.offset |= 1;
6973 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
6974 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
6976 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6977 contents, rel->r_offset, value,
6981 case R_ARM_TLS_GD32:
6982 case R_ARM_TLS_IE32:
6988 if (globals->sgot == NULL)
6995 dyn = globals->root.dynamic_sections_created;
6996 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
6998 || !SYMBOL_REFERENCES_LOCAL (info, h)))
7000 *unresolved_reloc_p = FALSE;
7003 off = h->got.offset;
7004 tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
7008 if (local_got_offsets == NULL)
7010 off = local_got_offsets[r_symndx];
7011 tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
7014 if (tls_type == GOT_UNKNOWN)
7021 bfd_boolean need_relocs = FALSE;
7022 Elf_Internal_Rela outrel;
7023 bfd_byte *loc = NULL;
7026 /* The GOT entries have not been initialized yet. Do it
7027 now, and emit any relocations. If both an IE GOT and a
7028 GD GOT are necessary, we emit the GD first. */
7030 if ((info->shared || indx != 0)
7032 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7033 || h->root.type != bfd_link_hash_undefweak))
7036 if (globals->srelgot == NULL)
7038 loc = globals->srelgot->contents;
7039 loc += globals->srelgot->reloc_count * RELOC_SIZE (globals);
7042 if (tls_type & GOT_TLS_GD)
7046 outrel.r_addend = 0;
7047 outrel.r_offset = (globals->sgot->output_section->vma
7048 + globals->sgot->output_offset
7050 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
7052 if (globals->use_rel)
7053 bfd_put_32 (output_bfd, outrel.r_addend,
7054 globals->sgot->contents + cur_off);
7056 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
7057 globals->srelgot->reloc_count++;
7058 loc += RELOC_SIZE (globals);
7061 bfd_put_32 (output_bfd, value - dtpoff_base (info),
7062 globals->sgot->contents + cur_off + 4);
7065 outrel.r_addend = 0;
7066 outrel.r_info = ELF32_R_INFO (indx,
7067 R_ARM_TLS_DTPOFF32);
7068 outrel.r_offset += 4;
7070 if (globals->use_rel)
7071 bfd_put_32 (output_bfd, outrel.r_addend,
7072 globals->sgot->contents + cur_off + 4);
7075 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
7076 globals->srelgot->reloc_count++;
7077 loc += RELOC_SIZE (globals);
7082 /* If we are not emitting relocations for a
7083 general dynamic reference, then we must be in a
7084 static link or an executable link with the
7085 symbol binding locally. Mark it as belonging
7086 to module 1, the executable. */
7087 bfd_put_32 (output_bfd, 1,
7088 globals->sgot->contents + cur_off);
7089 bfd_put_32 (output_bfd, value - dtpoff_base (info),
7090 globals->sgot->contents + cur_off + 4);
7096 if (tls_type & GOT_TLS_IE)
7101 outrel.r_addend = value - dtpoff_base (info);
7103 outrel.r_addend = 0;
7104 outrel.r_offset = (globals->sgot->output_section->vma
7105 + globals->sgot->output_offset
7107 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
7109 if (globals->use_rel)
7110 bfd_put_32 (output_bfd, outrel.r_addend,
7111 globals->sgot->contents + cur_off);
7113 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
7114 globals->srelgot->reloc_count++;
7115 loc += RELOC_SIZE (globals);
7118 bfd_put_32 (output_bfd, tpoff (info, value),
7119 globals->sgot->contents + cur_off);
7126 local_got_offsets[r_symndx] |= 1;
7129 if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
7131 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
7132 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
7134 return _bfd_final_link_relocate (howto, input_bfd, input_section,
7135 contents, rel->r_offset, value,
7139 case R_ARM_TLS_LE32:
7142 (*_bfd_error_handler)
7143 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
7144 input_bfd, input_section,
7145 (long) rel->r_offset, howto->name);
7149 value = tpoff (info, value);
7151 return _bfd_final_link_relocate (howto, input_bfd, input_section,
7152 contents, rel->r_offset, value,
7156 if (globals->fix_v4bx)
7158 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7160 /* Ensure that we have a BX instruction. */
7161 BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
7163 if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf)
7165 /* Branch to veneer. */
7167 glue_addr = elf32_arm_bx_glue (info, insn & 0xf);
7168 glue_addr -= input_section->output_section->vma
7169 + input_section->output_offset
7170 + rel->r_offset + 8;
7171 insn = (insn & 0xf0000000) | 0x0a000000
7172 | ((glue_addr >> 2) & 0x00ffffff);
7176 /* Preserve Rm (lowest four bits) and the condition code
7177 (highest four bits). Other bits encode MOV PC,Rm. */
7178 insn = (insn & 0xf000000f) | 0x01a0f000;
7181 bfd_put_32 (input_bfd, insn, hit_data);
7183 return bfd_reloc_ok;
7185 case R_ARM_MOVW_ABS_NC:
7186 case R_ARM_MOVT_ABS:
7187 case R_ARM_MOVW_PREL_NC:
7188 case R_ARM_MOVT_PREL:
7189 /* Until we properly support segment-base-relative addressing then
7190 we assume the segment base to be zero, as for the group relocations.
7191 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
7192 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
7193 case R_ARM_MOVW_BREL_NC:
7194 case R_ARM_MOVW_BREL:
7195 case R_ARM_MOVT_BREL:
7197 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7199 if (globals->use_rel)
7201 addend = ((insn >> 4) & 0xf000) | (insn & 0xfff);
7202 signed_addend = (addend ^ 0x8000) - 0x8000;
7205 value += signed_addend;
7207 if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL)
7208 value -= (input_section->output_section->vma
7209 + input_section->output_offset + rel->r_offset);
7211 if (r_type == R_ARM_MOVW_BREL && value >= 0x10000)
7212 return bfd_reloc_overflow;
7214 if (sym_flags == STT_ARM_TFUNC)
7217 if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL
7218 || r_type == R_ARM_MOVT_BREL)
7222 insn |= value & 0xfff;
7223 insn |= (value & 0xf000) << 4;
7224 bfd_put_32 (input_bfd, insn, hit_data);
7226 return bfd_reloc_ok;
7228 case R_ARM_THM_MOVW_ABS_NC:
7229 case R_ARM_THM_MOVT_ABS:
7230 case R_ARM_THM_MOVW_PREL_NC:
7231 case R_ARM_THM_MOVT_PREL:
7232 /* Until we properly support segment-base-relative addressing then
7233 we assume the segment base to be zero, as for the above relocations.
7234 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
7235 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
7236 as R_ARM_THM_MOVT_ABS. */
7237 case R_ARM_THM_MOVW_BREL_NC:
7238 case R_ARM_THM_MOVW_BREL:
7239 case R_ARM_THM_MOVT_BREL:
7243 insn = bfd_get_16 (input_bfd, hit_data) << 16;
7244 insn |= bfd_get_16 (input_bfd, hit_data + 2);
7246 if (globals->use_rel)
7248 addend = ((insn >> 4) & 0xf000)
7249 | ((insn >> 15) & 0x0800)
7250 | ((insn >> 4) & 0x0700)
7252 signed_addend = (addend ^ 0x8000) - 0x8000;
7255 value += signed_addend;
7257 if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL)
7258 value -= (input_section->output_section->vma
7259 + input_section->output_offset + rel->r_offset);
7261 if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000)
7262 return bfd_reloc_overflow;
7264 if (sym_flags == STT_ARM_TFUNC)
7267 if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL
7268 || r_type == R_ARM_THM_MOVT_BREL)
7272 insn |= (value & 0xf000) << 4;
7273 insn |= (value & 0x0800) << 15;
7274 insn |= (value & 0x0700) << 4;
7275 insn |= (value & 0x00ff);
7277 bfd_put_16 (input_bfd, insn >> 16, hit_data);
7278 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
7280 return bfd_reloc_ok;
7282 case R_ARM_ALU_PC_G0_NC:
7283 case R_ARM_ALU_PC_G1_NC:
7284 case R_ARM_ALU_PC_G0:
7285 case R_ARM_ALU_PC_G1:
7286 case R_ARM_ALU_PC_G2:
7287 case R_ARM_ALU_SB_G0_NC:
7288 case R_ARM_ALU_SB_G1_NC:
7289 case R_ARM_ALU_SB_G0:
7290 case R_ARM_ALU_SB_G1:
7291 case R_ARM_ALU_SB_G2:
7293 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7294 bfd_vma pc = input_section->output_section->vma
7295 + input_section->output_offset + rel->r_offset;
7296 /* sb should be the origin of the *segment* containing the symbol.
7297 It is not clear how to obtain this OS-dependent value, so we
7298 make an arbitrary choice of zero. */
7302 bfd_signed_vma signed_value;
7305 /* Determine which group of bits to select. */
7308 case R_ARM_ALU_PC_G0_NC:
7309 case R_ARM_ALU_PC_G0:
7310 case R_ARM_ALU_SB_G0_NC:
7311 case R_ARM_ALU_SB_G0:
7315 case R_ARM_ALU_PC_G1_NC:
7316 case R_ARM_ALU_PC_G1:
7317 case R_ARM_ALU_SB_G1_NC:
7318 case R_ARM_ALU_SB_G1:
7322 case R_ARM_ALU_PC_G2:
7323 case R_ARM_ALU_SB_G2:
7331 /* If REL, extract the addend from the insn. If RELA, it will
7332 have already been fetched for us. */
7333 if (globals->use_rel)
7336 bfd_vma constant = insn & 0xff;
7337 bfd_vma rotation = (insn & 0xf00) >> 8;
7340 signed_addend = constant;
7343 /* Compensate for the fact that in the instruction, the
7344 rotation is stored in multiples of 2 bits. */
7347 /* Rotate "constant" right by "rotation" bits. */
7348 signed_addend = (constant >> rotation) |
7349 (constant << (8 * sizeof (bfd_vma) - rotation));
7352 /* Determine if the instruction is an ADD or a SUB.
7353 (For REL, this determines the sign of the addend.) */
7354 negative = identify_add_or_sub (insn);
7357 (*_bfd_error_handler)
7358 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
7359 input_bfd, input_section,
7360 (long) rel->r_offset, howto->name);
7361 return bfd_reloc_overflow;
7364 signed_addend *= negative;
7367 /* Compute the value (X) to go in the place. */
7368 if (r_type == R_ARM_ALU_PC_G0_NC
7369 || r_type == R_ARM_ALU_PC_G1_NC
7370 || r_type == R_ARM_ALU_PC_G0
7371 || r_type == R_ARM_ALU_PC_G1
7372 || r_type == R_ARM_ALU_PC_G2)
7374 signed_value = value - pc + signed_addend;
7376 /* Section base relative. */
7377 signed_value = value - sb + signed_addend;
7379 /* If the target symbol is a Thumb function, then set the
7380 Thumb bit in the address. */
7381 if (sym_flags == STT_ARM_TFUNC)
7384 /* Calculate the value of the relevant G_n, in encoded
7385 constant-with-rotation format. */
7386 g_n = calculate_group_reloc_mask (abs (signed_value), group,
7389 /* Check for overflow if required. */
7390 if ((r_type == R_ARM_ALU_PC_G0
7391 || r_type == R_ARM_ALU_PC_G1
7392 || r_type == R_ARM_ALU_PC_G2
7393 || r_type == R_ARM_ALU_SB_G0
7394 || r_type == R_ARM_ALU_SB_G1
7395 || r_type == R_ARM_ALU_SB_G2) && residual != 0)
7397 (*_bfd_error_handler)
7398 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7399 input_bfd, input_section,
7400 (long) rel->r_offset, abs (signed_value), howto->name);
7401 return bfd_reloc_overflow;
7404 /* Mask out the value and the ADD/SUB part of the opcode; take care
7405 not to destroy the S bit. */
7408 /* Set the opcode according to whether the value to go in the
7409 place is negative. */
7410 if (signed_value < 0)
7415 /* Encode the offset. */
7418 bfd_put_32 (input_bfd, insn, hit_data);
7420 return bfd_reloc_ok;
7422 case R_ARM_LDR_PC_G0:
7423 case R_ARM_LDR_PC_G1:
7424 case R_ARM_LDR_PC_G2:
7425 case R_ARM_LDR_SB_G0:
7426 case R_ARM_LDR_SB_G1:
7427 case R_ARM_LDR_SB_G2:
7429 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7430 bfd_vma pc = input_section->output_section->vma
7431 + input_section->output_offset + rel->r_offset;
7432 bfd_vma sb = 0; /* See note above. */
7434 bfd_signed_vma signed_value;
7437 /* Determine which groups of bits to calculate. */
7440 case R_ARM_LDR_PC_G0:
7441 case R_ARM_LDR_SB_G0:
7445 case R_ARM_LDR_PC_G1:
7446 case R_ARM_LDR_SB_G1:
7450 case R_ARM_LDR_PC_G2:
7451 case R_ARM_LDR_SB_G2:
7459 /* If REL, extract the addend from the insn. If RELA, it will
7460 have already been fetched for us. */
7461 if (globals->use_rel)
7463 int negative = (insn & (1 << 23)) ? 1 : -1;
7464 signed_addend = negative * (insn & 0xfff);
7467 /* Compute the value (X) to go in the place. */
7468 if (r_type == R_ARM_LDR_PC_G0
7469 || r_type == R_ARM_LDR_PC_G1
7470 || r_type == R_ARM_LDR_PC_G2)
7472 signed_value = value - pc + signed_addend;
7474 /* Section base relative. */
7475 signed_value = value - sb + signed_addend;
7477 /* Calculate the value of the relevant G_{n-1} to obtain
7478 the residual at that stage. */
7479 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7481 /* Check for overflow. */
7482 if (residual >= 0x1000)
7484 (*_bfd_error_handler)
7485 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7486 input_bfd, input_section,
7487 (long) rel->r_offset, abs (signed_value), howto->name);
7488 return bfd_reloc_overflow;
7491 /* Mask out the value and U bit. */
7494 /* Set the U bit if the value to go in the place is non-negative. */
7495 if (signed_value >= 0)
7498 /* Encode the offset. */
7501 bfd_put_32 (input_bfd, insn, hit_data);
7503 return bfd_reloc_ok;
7505 case R_ARM_LDRS_PC_G0:
7506 case R_ARM_LDRS_PC_G1:
7507 case R_ARM_LDRS_PC_G2:
7508 case R_ARM_LDRS_SB_G0:
7509 case R_ARM_LDRS_SB_G1:
7510 case R_ARM_LDRS_SB_G2:
7512 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7513 bfd_vma pc = input_section->output_section->vma
7514 + input_section->output_offset + rel->r_offset;
7515 bfd_vma sb = 0; /* See note above. */
7517 bfd_signed_vma signed_value;
7520 /* Determine which groups of bits to calculate. */
7523 case R_ARM_LDRS_PC_G0:
7524 case R_ARM_LDRS_SB_G0:
7528 case R_ARM_LDRS_PC_G1:
7529 case R_ARM_LDRS_SB_G1:
7533 case R_ARM_LDRS_PC_G2:
7534 case R_ARM_LDRS_SB_G2:
7542 /* If REL, extract the addend from the insn. If RELA, it will
7543 have already been fetched for us. */
7544 if (globals->use_rel)
7546 int negative = (insn & (1 << 23)) ? 1 : -1;
7547 signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf));
7550 /* Compute the value (X) to go in the place. */
7551 if (r_type == R_ARM_LDRS_PC_G0
7552 || r_type == R_ARM_LDRS_PC_G1
7553 || r_type == R_ARM_LDRS_PC_G2)
7555 signed_value = value - pc + signed_addend;
7557 /* Section base relative. */
7558 signed_value = value - sb + signed_addend;
7560 /* Calculate the value of the relevant G_{n-1} to obtain
7561 the residual at that stage. */
7562 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7564 /* Check for overflow. */
7565 if (residual >= 0x100)
7567 (*_bfd_error_handler)
7568 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7569 input_bfd, input_section,
7570 (long) rel->r_offset, abs (signed_value), howto->name);
7571 return bfd_reloc_overflow;
7574 /* Mask out the value and U bit. */
7577 /* Set the U bit if the value to go in the place is non-negative. */
7578 if (signed_value >= 0)
7581 /* Encode the offset. */
7582 insn |= ((residual & 0xf0) << 4) | (residual & 0xf);
7584 bfd_put_32 (input_bfd, insn, hit_data);
7586 return bfd_reloc_ok;
7588 case R_ARM_LDC_PC_G0:
7589 case R_ARM_LDC_PC_G1:
7590 case R_ARM_LDC_PC_G2:
7591 case R_ARM_LDC_SB_G0:
7592 case R_ARM_LDC_SB_G1:
7593 case R_ARM_LDC_SB_G2:
7595 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7596 bfd_vma pc = input_section->output_section->vma
7597 + input_section->output_offset + rel->r_offset;
7598 bfd_vma sb = 0; /* See note above. */
7600 bfd_signed_vma signed_value;
7603 /* Determine which groups of bits to calculate. */
7606 case R_ARM_LDC_PC_G0:
7607 case R_ARM_LDC_SB_G0:
7611 case R_ARM_LDC_PC_G1:
7612 case R_ARM_LDC_SB_G1:
7616 case R_ARM_LDC_PC_G2:
7617 case R_ARM_LDC_SB_G2:
7625 /* If REL, extract the addend from the insn. If RELA, it will
7626 have already been fetched for us. */
7627 if (globals->use_rel)
7629 int negative = (insn & (1 << 23)) ? 1 : -1;
7630 signed_addend = negative * ((insn & 0xff) << 2);
7633 /* Compute the value (X) to go in the place. */
7634 if (r_type == R_ARM_LDC_PC_G0
7635 || r_type == R_ARM_LDC_PC_G1
7636 || r_type == R_ARM_LDC_PC_G2)
7638 signed_value = value - pc + signed_addend;
7640 /* Section base relative. */
7641 signed_value = value - sb + signed_addend;
7643 /* Calculate the value of the relevant G_{n-1} to obtain
7644 the residual at that stage. */
7645 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7647 /* Check for overflow. (The absolute value to go in the place must be
7648 divisible by four and, after having been divided by four, must
7649 fit in eight bits.) */
7650 if ((residual & 0x3) != 0 || residual >= 0x400)
7652 (*_bfd_error_handler)
7653 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7654 input_bfd, input_section,
7655 (long) rel->r_offset, abs (signed_value), howto->name);
7656 return bfd_reloc_overflow;
7659 /* Mask out the value and U bit. */
7662 /* Set the U bit if the value to go in the place is non-negative. */
7663 if (signed_value >= 0)
7666 /* Encode the offset. */
7667 insn |= residual >> 2;
7669 bfd_put_32 (input_bfd, insn, hit_data);
7671 return bfd_reloc_ok;
7674 return bfd_reloc_notsupported;
7678 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
7680 arm_add_to_rel (bfd * abfd,
7682 reloc_howto_type * howto,
7683 bfd_signed_vma increment)
7685 bfd_signed_vma addend;
7687 if (howto->type == R_ARM_THM_CALL
7688 || howto->type == R_ARM_THM_JUMP24)
7690 int upper_insn, lower_insn;
7693 upper_insn = bfd_get_16 (abfd, address);
7694 lower_insn = bfd_get_16 (abfd, address + 2);
7695 upper = upper_insn & 0x7ff;
7696 lower = lower_insn & 0x7ff;
7698 addend = (upper << 12) | (lower << 1);
7699 addend += increment;
7702 upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
7703 lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
7705 bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
7706 bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
7712 contents = bfd_get_32 (abfd, address);
7714 /* Get the (signed) value from the instruction. */
7715 addend = contents & howto->src_mask;
7716 if (addend & ((howto->src_mask + 1) >> 1))
7718 bfd_signed_vma mask;
7721 mask &= ~ howto->src_mask;
7725 /* Add in the increment, (which is a byte value). */
7726 switch (howto->type)
7729 addend += increment;
7736 addend <<= howto->size;
7737 addend += increment;
7739 /* Should we check for overflow here ? */
7741 /* Drop any undesired bits. */
7742 addend >>= howto->rightshift;
7746 contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
7748 bfd_put_32 (abfd, contents, address);
7752 #define IS_ARM_TLS_RELOC(R_TYPE) \
7753 ((R_TYPE) == R_ARM_TLS_GD32 \
7754 || (R_TYPE) == R_ARM_TLS_LDO32 \
7755 || (R_TYPE) == R_ARM_TLS_LDM32 \
7756 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
7757 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
7758 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
7759 || (R_TYPE) == R_ARM_TLS_LE32 \
7760 || (R_TYPE) == R_ARM_TLS_IE32)
7762 /* Relocate an ARM ELF section. */
7765 elf32_arm_relocate_section (bfd * output_bfd,
7766 struct bfd_link_info * info,
7768 asection * input_section,
7769 bfd_byte * contents,
7770 Elf_Internal_Rela * relocs,
7771 Elf_Internal_Sym * local_syms,
7772 asection ** local_sections)
7774 Elf_Internal_Shdr *symtab_hdr;
7775 struct elf_link_hash_entry **sym_hashes;
7776 Elf_Internal_Rela *rel;
7777 Elf_Internal_Rela *relend;
7779 struct elf32_arm_link_hash_table * globals;
7781 globals = elf32_arm_hash_table (info);
7783 symtab_hdr = & elf_symtab_hdr (input_bfd);
7784 sym_hashes = elf_sym_hashes (input_bfd);
7787 relend = relocs + input_section->reloc_count;
7788 for (; rel < relend; rel++)
7791 reloc_howto_type * howto;
7792 unsigned long r_symndx;
7793 Elf_Internal_Sym * sym;
7795 struct elf_link_hash_entry * h;
7797 bfd_reloc_status_type r;
7800 bfd_boolean unresolved_reloc = FALSE;
7801 char *error_message = NULL;
7803 r_symndx = ELF32_R_SYM (rel->r_info);
7804 r_type = ELF32_R_TYPE (rel->r_info);
7805 r_type = arm_real_reloc_type (globals, r_type);
7807 if ( r_type == R_ARM_GNU_VTENTRY
7808 || r_type == R_ARM_GNU_VTINHERIT)
7811 bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
7812 howto = bfd_reloc.howto;
7818 if (r_symndx < symtab_hdr->sh_info)
7820 sym = local_syms + r_symndx;
7821 sym_type = ELF32_ST_TYPE (sym->st_info);
7822 sec = local_sections[r_symndx];
7823 if (globals->use_rel)
7825 relocation = (sec->output_section->vma
7826 + sec->output_offset
7828 if (!info->relocatable
7829 && (sec->flags & SEC_MERGE)
7830 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
7833 bfd_vma addend, value;
7837 case R_ARM_MOVW_ABS_NC:
7838 case R_ARM_MOVT_ABS:
7839 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
7840 addend = ((value & 0xf0000) >> 4) | (value & 0xfff);
7841 addend = (addend ^ 0x8000) - 0x8000;
7844 case R_ARM_THM_MOVW_ABS_NC:
7845 case R_ARM_THM_MOVT_ABS:
7846 value = bfd_get_16 (input_bfd, contents + rel->r_offset)
7848 value |= bfd_get_16 (input_bfd,
7849 contents + rel->r_offset + 2);
7850 addend = ((value & 0xf7000) >> 4) | (value & 0xff)
7851 | ((value & 0x04000000) >> 15);
7852 addend = (addend ^ 0x8000) - 0x8000;
7856 if (howto->rightshift
7857 || (howto->src_mask & (howto->src_mask + 1)))
7859 (*_bfd_error_handler)
7860 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
7861 input_bfd, input_section,
7862 (long) rel->r_offset, howto->name);
7866 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
7868 /* Get the (signed) value from the instruction. */
7869 addend = value & howto->src_mask;
7870 if (addend & ((howto->src_mask + 1) >> 1))
7872 bfd_signed_vma mask;
7875 mask &= ~ howto->src_mask;
7883 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
7885 addend += msec->output_section->vma + msec->output_offset;
7887 /* Cases here must match those in the preceeding
7888 switch statement. */
7891 case R_ARM_MOVW_ABS_NC:
7892 case R_ARM_MOVT_ABS:
7893 value = (value & 0xfff0f000) | ((addend & 0xf000) << 4)
7895 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
7898 case R_ARM_THM_MOVW_ABS_NC:
7899 case R_ARM_THM_MOVT_ABS:
7900 value = (value & 0xfbf08f00) | ((addend & 0xf700) << 4)
7901 | (addend & 0xff) | ((addend & 0x0800) << 15);
7902 bfd_put_16 (input_bfd, value >> 16,
7903 contents + rel->r_offset);
7904 bfd_put_16 (input_bfd, value,
7905 contents + rel->r_offset + 2);
7909 value = (value & ~ howto->dst_mask)
7910 | (addend & howto->dst_mask);
7911 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
7917 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
7923 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7924 r_symndx, symtab_hdr, sym_hashes,
7926 unresolved_reloc, warned);
7931 if (sec != NULL && elf_discarded_section (sec))
7933 /* For relocs against symbols from removed linkonce sections,
7934 or sections discarded by a linker script, we just want the
7935 section contents zeroed. Avoid any special processing. */
7936 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
7942 if (info->relocatable)
7944 /* This is a relocatable link. We don't have to change
7945 anything, unless the reloc is against a section symbol,
7946 in which case we have to adjust according to where the
7947 section symbol winds up in the output section. */
7948 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
7950 if (globals->use_rel)
7951 arm_add_to_rel (input_bfd, contents + rel->r_offset,
7952 howto, (bfd_signed_vma) sec->output_offset);
7954 rel->r_addend += sec->output_offset;
7960 name = h->root.root.string;
7963 name = (bfd_elf_string_from_elf_section
7964 (input_bfd, symtab_hdr->sh_link, sym->st_name));
7965 if (name == NULL || *name == '\0')
7966 name = bfd_section_name (input_bfd, sec);
7970 && r_type != R_ARM_NONE
7972 || h->root.type == bfd_link_hash_defined
7973 || h->root.type == bfd_link_hash_defweak)
7974 && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
7976 (*_bfd_error_handler)
7977 ((sym_type == STT_TLS
7978 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
7979 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
7982 (long) rel->r_offset,
7987 r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
7988 input_section, contents, rel,
7989 relocation, info, sec, name,
7990 (h ? ELF_ST_TYPE (h->type) :
7991 ELF_ST_TYPE (sym->st_info)), h,
7992 &unresolved_reloc, &error_message);
7994 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
7995 because such sections are not SEC_ALLOC and thus ld.so will
7996 not process them. */
7997 if (unresolved_reloc
7998 && !((input_section->flags & SEC_DEBUGGING) != 0
8001 (*_bfd_error_handler)
8002 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
8005 (long) rel->r_offset,
8007 h->root.root.string);
8011 if (r != bfd_reloc_ok)
8015 case bfd_reloc_overflow:
8016 /* If the overflowing reloc was to an undefined symbol,
8017 we have already printed one error message and there
8018 is no point complaining again. */
8020 h->root.type != bfd_link_hash_undefined)
8021 && (!((*info->callbacks->reloc_overflow)
8022 (info, (h ? &h->root : NULL), name, howto->name,
8023 (bfd_vma) 0, input_bfd, input_section,
8028 case bfd_reloc_undefined:
8029 if (!((*info->callbacks->undefined_symbol)
8030 (info, name, input_bfd, input_section,
8031 rel->r_offset, TRUE)))
8035 case bfd_reloc_outofrange:
8036 error_message = _("out of range");
8039 case bfd_reloc_notsupported:
8040 error_message = _("unsupported relocation");
8043 case bfd_reloc_dangerous:
8044 /* error_message should already be set. */
8048 error_message = _("unknown error");
8052 BFD_ASSERT (error_message != NULL);
8053 if (!((*info->callbacks->reloc_dangerous)
8054 (info, error_message, input_bfd, input_section,
8065 /* Set the right machine number. */
8068 elf32_arm_object_p (bfd *abfd)
8072 mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
8074 if (mach != bfd_mach_arm_unknown)
8075 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
8077 else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
8078 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
8081 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
8086 /* Function to keep ARM specific flags in the ELF header. */
8089 elf32_arm_set_private_flags (bfd *abfd, flagword flags)
8091 if (elf_flags_init (abfd)
8092 && elf_elfheader (abfd)->e_flags != flags)
8094 if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
8096 if (flags & EF_ARM_INTERWORK)
8097 (*_bfd_error_handler)
8098 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
8102 (_("Warning: Clearing the interworking flag of %B due to outside request"),
8108 elf_elfheader (abfd)->e_flags = flags;
8109 elf_flags_init (abfd) = TRUE;
8115 /* Copy backend specific data from one object module to another. */
8118 elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
8123 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
8126 in_flags = elf_elfheader (ibfd)->e_flags;
8127 out_flags = elf_elfheader (obfd)->e_flags;
8129 if (elf_flags_init (obfd)
8130 && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
8131 && in_flags != out_flags)
8133 /* Cannot mix APCS26 and APCS32 code. */
8134 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
8137 /* Cannot mix float APCS and non-float APCS code. */
8138 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
8141 /* If the src and dest have different interworking flags
8142 then turn off the interworking bit. */
8143 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
8145 if (out_flags & EF_ARM_INTERWORK)
8147 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
8150 in_flags &= ~EF_ARM_INTERWORK;
8153 /* Likewise for PIC, though don't warn for this case. */
8154 if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
8155 in_flags &= ~EF_ARM_PIC;
8158 elf_elfheader (obfd)->e_flags = in_flags;
8159 elf_flags_init (obfd) = TRUE;
8161 /* Also copy the EI_OSABI field. */
8162 elf_elfheader (obfd)->e_ident[EI_OSABI] =
8163 elf_elfheader (ibfd)->e_ident[EI_OSABI];
8165 /* Copy object attributes. */
8166 _bfd_elf_copy_obj_attributes (ibfd, obfd);
8171 /* Values for Tag_ABI_PCS_R9_use. */
8180 /* Values for Tag_ABI_PCS_RW_data. */
8183 AEABI_PCS_RW_data_absolute,
8184 AEABI_PCS_RW_data_PCrel,
8185 AEABI_PCS_RW_data_SBrel,
8186 AEABI_PCS_RW_data_unused
8189 /* Values for Tag_ABI_enum_size. */
8195 AEABI_enum_forced_wide
8198 /* Determine whether an object attribute tag takes an integer, a
8202 elf32_arm_obj_attrs_arg_type (int tag)
8204 if (tag == Tag_compatibility)
8205 return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL;
8206 else if (tag == Tag_nodefaults)
8207 return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_NO_DEFAULT;
8208 else if (tag == Tag_CPU_raw_name || tag == Tag_CPU_name)
8209 return ATTR_TYPE_FLAG_STR_VAL;
8211 return ATTR_TYPE_FLAG_INT_VAL;
8213 return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL;
8216 /* The ABI defines that Tag_conformance should be emitted first, and that
8217 Tag_nodefaults should be second (if either is defined). This sets those
8218 two positions, and bumps up the position of all the remaining tags to
8221 elf32_arm_obj_attrs_order (int num)
8224 return Tag_conformance;
8226 return Tag_nodefaults;
8227 if ((num - 2) < Tag_nodefaults)
8229 if ((num - 1) < Tag_conformance)
8234 /* Read the architecture from the Tag_also_compatible_with attribute, if any.
8235 Returns -1 if no architecture could be read. */
8238 get_secondary_compatible_arch (bfd *abfd)
8240 obj_attribute *attr =
8241 &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with];
8243 /* Note: the tag and its argument below are uleb128 values, though
8244 currently-defined values fit in one byte for each. */
8246 && attr->s[0] == Tag_CPU_arch
8247 && (attr->s[1] & 128) != 128
8251 /* This tag is "safely ignorable", so don't complain if it looks funny. */
8255 /* Set, or unset, the architecture of the Tag_also_compatible_with attribute.
8256 The tag is removed if ARCH is -1. */
8259 set_secondary_compatible_arch (bfd *abfd, int arch)
8261 obj_attribute *attr =
8262 &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with];
8270 /* Note: the tag and its argument below are uleb128 values, though
8271 currently-defined values fit in one byte for each. */
8273 attr->s = bfd_alloc (abfd, 3);
8274 attr->s[0] = Tag_CPU_arch;
8279 /* Combine two values for Tag_CPU_arch, taking secondary compatibility tags
8283 tag_cpu_arch_combine (bfd *ibfd, int oldtag, int *secondary_compat_out,
8284 int newtag, int secondary_compat)
8286 #define T(X) TAG_CPU_ARCH_##X
8287 int tagl, tagh, result;
8290 T(V6T2), /* PRE_V4. */
8294 T(V6T2), /* V5TE. */
8295 T(V6T2), /* V5TEJ. */
8302 T(V6K), /* PRE_V4. */
8307 T(V6K), /* V5TEJ. */
8309 T(V6KZ), /* V6KZ. */
8315 T(V7), /* PRE_V4. */
8334 T(V6K), /* V5TEJ. */
8336 T(V6KZ), /* V6KZ. */
8349 T(V6K), /* V5TEJ. */
8351 T(V6KZ), /* V6KZ. */
8355 T(V6S_M), /* V6_M. */
8356 T(V6S_M) /* V6S_M. */
8358 const int v4t_plus_v6_m[] =
8364 T(V5TE), /* V5TE. */
8365 T(V5TEJ), /* V5TEJ. */
8367 T(V6KZ), /* V6KZ. */
8368 T(V6T2), /* V6T2. */
8371 T(V6_M), /* V6_M. */
8372 T(V6S_M), /* V6S_M. */
8373 T(V4T_PLUS_V6_M) /* V4T plus V6_M. */
8382 /* Pseudo-architecture. */
8386 /* Check we've not got a higher architecture than we know about. */
8388 if (oldtag >= MAX_TAG_CPU_ARCH || newtag >= MAX_TAG_CPU_ARCH)
8390 _bfd_error_handler (_("ERROR: %B: Unknown CPU architecture"), ibfd);
8394 /* Override old tag if we have a Tag_also_compatible_with on the output. */
8396 if ((oldtag == T(V6_M) && *secondary_compat_out == T(V4T))
8397 || (oldtag == T(V4T) && *secondary_compat_out == T(V6_M)))
8398 oldtag = T(V4T_PLUS_V6_M);
8400 /* And override the new tag if we have a Tag_also_compatible_with on the
8403 if ((newtag == T(V6_M) && secondary_compat == T(V4T))
8404 || (newtag == T(V4T) && secondary_compat == T(V6_M)))
8405 newtag = T(V4T_PLUS_V6_M);
8407 tagl = (oldtag < newtag) ? oldtag : newtag;
8408 result = tagh = (oldtag > newtag) ? oldtag : newtag;
8410 /* Architectures before V6KZ add features monotonically. */
8411 if (tagh <= TAG_CPU_ARCH_V6KZ)
8414 result = comb[tagh - T(V6T2)][tagl];
8416 /* Use Tag_CPU_arch == V4T and Tag_also_compatible_with (Tag_CPU_arch V6_M)
8417 as the canonical version. */
8418 if (result == T(V4T_PLUS_V6_M))
8421 *secondary_compat_out = T(V6_M);
8424 *secondary_compat_out = -1;
8428 _bfd_error_handler (_("ERROR: %B: Conflicting CPU architectures %d/%d"),
8429 ibfd, oldtag, newtag);
8437 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
8438 are conflicting attributes. */
8441 elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
8443 obj_attribute *in_attr;
8444 obj_attribute *out_attr;
8445 obj_attribute_list *in_list;
8446 obj_attribute_list *out_list;
8447 obj_attribute_list **out_listp;
8448 /* Some tags have 0 = don't care, 1 = strong requirement,
8449 2 = weak requirement. */
8450 static const int order_021[3] = {0, 2, 1};
8451 /* For use with Tag_VFP_arch. */
8452 static const int order_01243[5] = {0, 1, 2, 4, 3};
8454 bfd_boolean result = TRUE;
8456 if (!elf_known_obj_attributes_proc (obfd)[0].i)
8458 /* This is the first object. Copy the attributes. */
8459 _bfd_elf_copy_obj_attributes (ibfd, obfd);
8461 /* Use the Tag_null value to indicate the attributes have been
8463 elf_known_obj_attributes_proc (obfd)[0].i = 1;
8468 in_attr = elf_known_obj_attributes_proc (ibfd);
8469 out_attr = elf_known_obj_attributes_proc (obfd);
8470 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
8471 if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i)
8473 /* Ignore mismatches if the object doesn't use floating point. */
8474 if (out_attr[Tag_ABI_FP_number_model].i == 0)
8475 out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i;
8476 else if (in_attr[Tag_ABI_FP_number_model].i != 0)
8479 (_("ERROR: %B uses VFP register arguments, %B does not"),
8485 for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
8487 /* Merge this attribute with existing attributes. */
8490 case Tag_CPU_raw_name:
8492 /* These are merged after Tag_CPU_arch. */
8495 case Tag_ABI_optimization_goals:
8496 case Tag_ABI_FP_optimization_goals:
8497 /* Use the first value seen. */
8502 int secondary_compat = -1, secondary_compat_out = -1;
8503 unsigned int saved_out_attr = out_attr[i].i;
8504 static const char *name_table[] = {
8505 /* These aren't real CPU names, but we can't guess
8506 that from the architecture version alone. */
8522 /* Merge Tag_CPU_arch and Tag_also_compatible_with. */
8523 secondary_compat = get_secondary_compatible_arch (ibfd);
8524 secondary_compat_out = get_secondary_compatible_arch (obfd);
8525 out_attr[i].i = tag_cpu_arch_combine (ibfd, out_attr[i].i,
8526 &secondary_compat_out,
8529 set_secondary_compatible_arch (obfd, secondary_compat_out);
8531 /* Merge Tag_CPU_name and Tag_CPU_raw_name. */
8532 if (out_attr[i].i == saved_out_attr)
8533 ; /* Leave the names alone. */
8534 else if (out_attr[i].i == in_attr[i].i)
8536 /* The output architecture has been changed to match the
8537 input architecture. Use the input names. */
8538 out_attr[Tag_CPU_name].s = in_attr[Tag_CPU_name].s
8539 ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_name].s)
8541 out_attr[Tag_CPU_raw_name].s = in_attr[Tag_CPU_raw_name].s
8542 ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_raw_name].s)
8547 out_attr[Tag_CPU_name].s = NULL;
8548 out_attr[Tag_CPU_raw_name].s = NULL;
8551 /* If we still don't have a value for Tag_CPU_name,
8552 make one up now. Tag_CPU_raw_name remains blank. */
8553 if (out_attr[Tag_CPU_name].s == NULL
8554 && out_attr[i].i < ARRAY_SIZE (name_table))
8555 out_attr[Tag_CPU_name].s =
8556 _bfd_elf_attr_strdup (obfd, name_table[out_attr[i].i]);
8560 case Tag_ARM_ISA_use:
8561 case Tag_THUMB_ISA_use:
8563 case Tag_Advanced_SIMD_arch:
8564 /* ??? Do Advanced_SIMD (NEON) and WMMX conflict? */
8565 case Tag_ABI_FP_rounding:
8566 case Tag_ABI_FP_exceptions:
8567 case Tag_ABI_FP_user_exceptions:
8568 case Tag_ABI_FP_number_model:
8569 case Tag_VFP_HP_extension:
8570 case Tag_CPU_unaligned_access:
8572 case Tag_Virtualization_use:
8573 case Tag_MPextension_use:
8574 /* Use the largest value specified. */
8575 if (in_attr[i].i > out_attr[i].i)
8576 out_attr[i].i = in_attr[i].i;
8579 case Tag_ABI_align8_preserved:
8580 case Tag_ABI_PCS_RO_data:
8581 /* Use the smallest value specified. */
8582 if (in_attr[i].i < out_attr[i].i)
8583 out_attr[i].i = in_attr[i].i;
8586 case Tag_ABI_align8_needed:
8587 if ((in_attr[i].i > 0 || out_attr[i].i > 0)
8588 && (in_attr[Tag_ABI_align8_preserved].i == 0
8589 || out_attr[Tag_ABI_align8_preserved].i == 0))
8591 /* This error message should be enabled once all non-conformant
8592 binaries in the toolchain have had the attributes set
8595 (_("ERROR: %B: 8-byte data alignment conflicts with %B"),
8600 case Tag_ABI_FP_denormal:
8601 case Tag_ABI_PCS_GOT_use:
8602 /* Use the "greatest" from the sequence 0, 2, 1, or the largest
8603 value if greater than 2 (for future-proofing). */
8604 if ((in_attr[i].i > 2 && in_attr[i].i > out_attr[i].i)
8605 || (in_attr[i].i <= 2 && out_attr[i].i <= 2
8606 && order_021[in_attr[i].i] > order_021[out_attr[i].i]))
8607 out_attr[i].i = in_attr[i].i;
8611 case Tag_CPU_arch_profile:
8612 if (out_attr[i].i != in_attr[i].i)
8614 /* 0 will merge with anything.
8615 'A' and 'S' merge to 'A'.
8616 'R' and 'S' merge to 'R'.
8617 'M' and 'A|R|S' is an error. */
8618 if (out_attr[i].i == 0
8619 || (out_attr[i].i == 'S'
8620 && (in_attr[i].i == 'A' || in_attr[i].i == 'R')))
8621 out_attr[i].i = in_attr[i].i;
8622 else if (in_attr[i].i == 0
8623 || (in_attr[i].i == 'S'
8624 && (out_attr[i].i == 'A' || out_attr[i].i == 'R')))
8629 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
8631 in_attr[i].i ? in_attr[i].i : '0',
8632 out_attr[i].i ? out_attr[i].i : '0');
8638 /* Use the "greatest" from the sequence 0, 1, 2, 4, 3, or the
8639 largest value if greater than 4 (for future-proofing). */
8640 if ((in_attr[i].i > 4 && in_attr[i].i > out_attr[i].i)
8641 || (in_attr[i].i <= 4 && out_attr[i].i <= 4
8642 && order_01243[in_attr[i].i] > order_01243[out_attr[i].i]))
8643 out_attr[i].i = in_attr[i].i;
8645 case Tag_PCS_config:
8646 if (out_attr[i].i == 0)
8647 out_attr[i].i = in_attr[i].i;
8648 else if (in_attr[i].i != 0 && out_attr[i].i != 0)
8650 /* It's sometimes ok to mix different configs, so this is only
8653 (_("Warning: %B: Conflicting platform configuration"), ibfd);
8656 case Tag_ABI_PCS_R9_use:
8657 if (in_attr[i].i != out_attr[i].i
8658 && out_attr[i].i != AEABI_R9_unused
8659 && in_attr[i].i != AEABI_R9_unused)
8662 (_("ERROR: %B: Conflicting use of R9"), ibfd);
8665 if (out_attr[i].i == AEABI_R9_unused)
8666 out_attr[i].i = in_attr[i].i;
8668 case Tag_ABI_PCS_RW_data:
8669 if (in_attr[i].i == AEABI_PCS_RW_data_SBrel
8670 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB
8671 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused)
8674 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
8678 /* Use the smallest value specified. */
8679 if (in_attr[i].i < out_attr[i].i)
8680 out_attr[i].i = in_attr[i].i;
8682 case Tag_ABI_PCS_wchar_t:
8683 if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i
8684 && !elf_arm_tdata (obfd)->no_wchar_size_warning)
8687 (_("warning: %B uses %u-byte wchar_t yet the output is to use %u-byte wchar_t; use of wchar_t values across objects may fail"),
8688 ibfd, in_attr[i].i, out_attr[i].i);
8690 else if (in_attr[i].i && !out_attr[i].i)
8691 out_attr[i].i = in_attr[i].i;
8693 case Tag_ABI_enum_size:
8694 if (in_attr[i].i != AEABI_enum_unused)
8696 if (out_attr[i].i == AEABI_enum_unused
8697 || out_attr[i].i == AEABI_enum_forced_wide)
8699 /* The existing object is compatible with anything.
8700 Use whatever requirements the new object has. */
8701 out_attr[i].i = in_attr[i].i;
8703 else if (in_attr[i].i != AEABI_enum_forced_wide
8704 && out_attr[i].i != in_attr[i].i
8705 && !elf_arm_tdata (obfd)->no_enum_size_warning)
8707 static const char *aeabi_enum_names[] =
8708 { "", "variable-size", "32-bit", "" };
8709 const char *in_name =
8710 in_attr[i].i < ARRAY_SIZE(aeabi_enum_names)
8711 ? aeabi_enum_names[in_attr[i].i]
8713 const char *out_name =
8714 out_attr[i].i < ARRAY_SIZE(aeabi_enum_names)
8715 ? aeabi_enum_names[out_attr[i].i]
8718 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
8719 ibfd, in_name, out_name);
8723 case Tag_ABI_VFP_args:
8726 case Tag_ABI_WMMX_args:
8727 if (in_attr[i].i != out_attr[i].i)
8730 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
8735 case Tag_compatibility:
8736 /* Merged in target-independent code. */
8738 case Tag_ABI_HardFP_use:
8739 /* 1 (SP) and 2 (DP) conflict, so combine to 3 (SP & DP). */
8740 if ((in_attr[i].i == 1 && out_attr[i].i == 2)
8741 || (in_attr[i].i == 2 && out_attr[i].i == 1))
8743 else if (in_attr[i].i > out_attr[i].i)
8744 out_attr[i].i = in_attr[i].i;
8746 case Tag_ABI_FP_16bit_format:
8747 if (in_attr[i].i != 0 && out_attr[i].i != 0)
8749 if (in_attr[i].i != out_attr[i].i)
8752 (_("ERROR: fp16 format mismatch between %B and %B"),
8757 if (in_attr[i].i != 0)
8758 out_attr[i].i = in_attr[i].i;
8761 case Tag_nodefaults:
8762 /* This tag is set if it exists, but the value is unused (and is
8763 typically zero). We don't actually need to do anything here -
8764 the merge happens automatically when the type flags are merged
8767 case Tag_also_compatible_with:
8768 /* Already done in Tag_CPU_arch. */
8770 case Tag_conformance:
8771 /* Keep the attribute if it matches. Throw it away otherwise.
8772 No attribute means no claim to conform. */
8773 if (!in_attr[i].s || !out_attr[i].s
8774 || strcmp (in_attr[i].s, out_attr[i].s) != 0)
8775 out_attr[i].s = NULL;
8780 bfd *err_bfd = NULL;
8782 /* The "known_obj_attributes" table does contain some undefined
8783 attributes. Ensure that there are unused. */
8784 if (out_attr[i].i != 0 || out_attr[i].s != NULL)
8786 else if (in_attr[i].i != 0 || in_attr[i].s != NULL)
8789 if (err_bfd != NULL)
8791 /* Attribute numbers >=64 (mod 128) can be safely ignored. */
8795 (_("%B: Unknown mandatory EABI object attribute %d"),
8797 bfd_set_error (bfd_error_bad_value);
8803 (_("Warning: %B: Unknown EABI object attribute %d"),
8808 /* Only pass on attributes that match in both inputs. */
8809 if (in_attr[i].i != out_attr[i].i
8810 || in_attr[i].s != out_attr[i].s
8811 || (in_attr[i].s != NULL && out_attr[i].s != NULL
8812 && strcmp (in_attr[i].s, out_attr[i].s) != 0))
8815 out_attr[i].s = NULL;
8820 /* If out_attr was copied from in_attr then it won't have a type yet. */
8821 if (in_attr[i].type && !out_attr[i].type)
8822 out_attr[i].type = in_attr[i].type;
8825 /* Merge Tag_compatibility attributes and any common GNU ones. */
8826 _bfd_elf_merge_object_attributes (ibfd, obfd);
8828 /* Check for any attributes not known on ARM. */
8829 in_list = elf_other_obj_attributes_proc (ibfd);
8830 out_listp = &elf_other_obj_attributes_proc (obfd);
8831 out_list = *out_listp;
8833 for (; in_list || out_list; )
8835 bfd *err_bfd = NULL;
8838 /* The tags for each list are in numerical order. */
8839 /* If the tags are equal, then merge. */
8840 if (out_list && (!in_list || in_list->tag > out_list->tag))
8842 /* This attribute only exists in obfd. We can't merge, and we don't
8843 know what the tag means, so delete it. */
8845 err_tag = out_list->tag;
8846 *out_listp = out_list->next;
8847 out_list = *out_listp;
8849 else if (in_list && (!out_list || in_list->tag < out_list->tag))
8851 /* This attribute only exists in ibfd. We can't merge, and we don't
8852 know what the tag means, so ignore it. */
8854 err_tag = in_list->tag;
8855 in_list = in_list->next;
8857 else /* The tags are equal. */
8859 /* As present, all attributes in the list are unknown, and
8860 therefore can't be merged meaningfully. */
8862 err_tag = out_list->tag;
8864 /* Only pass on attributes that match in both inputs. */
8865 if (in_list->attr.i != out_list->attr.i
8866 || in_list->attr.s != out_list->attr.s
8867 || (in_list->attr.s && out_list->attr.s
8868 && strcmp (in_list->attr.s, out_list->attr.s) != 0))
8870 /* No match. Delete the attribute. */
8871 *out_listp = out_list->next;
8872 out_list = *out_listp;
8876 /* Matched. Keep the attribute and move to the next. */
8877 out_list = out_list->next;
8878 in_list = in_list->next;
8884 /* Attribute numbers >=64 (mod 128) can be safely ignored. */
8885 if ((err_tag & 127) < 64)
8888 (_("%B: Unknown mandatory EABI object attribute %d"),
8890 bfd_set_error (bfd_error_bad_value);
8896 (_("Warning: %B: Unknown EABI object attribute %d"),
8905 /* Return TRUE if the two EABI versions are incompatible. */
8908 elf32_arm_versions_compatible (unsigned iver, unsigned over)
8910 /* v4 and v5 are the same spec before and after it was released,
8911 so allow mixing them. */
8912 if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5)
8913 || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4))
8916 return (iver == over);
8919 /* Merge backend specific data from an object file to the output
8920 object file when linking. */
8923 elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
8927 bfd_boolean flags_compatible = TRUE;
8930 /* Check if we have the same endianess. */
8931 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
8934 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
8937 if (!elf32_arm_merge_eabi_attributes (ibfd, obfd))
8940 /* The input BFD must have had its flags initialised. */
8941 /* The following seems bogus to me -- The flags are initialized in
8942 the assembler but I don't think an elf_flags_init field is
8943 written into the object. */
8944 /* BFD_ASSERT (elf_flags_init (ibfd)); */
8946 in_flags = elf_elfheader (ibfd)->e_flags;
8947 out_flags = elf_elfheader (obfd)->e_flags;
8949 /* In theory there is no reason why we couldn't handle this. However
8950 in practice it isn't even close to working and there is no real
8951 reason to want it. */
8952 if (EF_ARM_EABI_VERSION (in_flags) >= EF_ARM_EABI_VER4
8953 && !(ibfd->flags & DYNAMIC)
8954 && (in_flags & EF_ARM_BE8))
8956 _bfd_error_handler (_("ERROR: %B is already in final BE8 format"),
8961 if (!elf_flags_init (obfd))
8963 /* If the input is the default architecture and had the default
8964 flags then do not bother setting the flags for the output
8965 architecture, instead allow future merges to do this. If no
8966 future merges ever set these flags then they will retain their
8967 uninitialised values, which surprise surprise, correspond
8968 to the default values. */
8969 if (bfd_get_arch_info (ibfd)->the_default
8970 && elf_elfheader (ibfd)->e_flags == 0)
8973 elf_flags_init (obfd) = TRUE;
8974 elf_elfheader (obfd)->e_flags = in_flags;
8976 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
8977 && bfd_get_arch_info (obfd)->the_default)
8978 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
8983 /* Determine what should happen if the input ARM architecture
8984 does not match the output ARM architecture. */
8985 if (! bfd_arm_merge_machines (ibfd, obfd))
8988 /* Identical flags must be compatible. */
8989 if (in_flags == out_flags)
8992 /* Check to see if the input BFD actually contains any sections. If
8993 not, its flags may not have been initialised either, but it
8994 cannot actually cause any incompatiblity. Do not short-circuit
8995 dynamic objects; their section list may be emptied by
8996 elf_link_add_object_symbols.
8998 Also check to see if there are no code sections in the input.
8999 In this case there is no need to check for code specific flags.
9000 XXX - do we need to worry about floating-point format compatability
9001 in data sections ? */
9002 if (!(ibfd->flags & DYNAMIC))
9004 bfd_boolean null_input_bfd = TRUE;
9005 bfd_boolean only_data_sections = TRUE;
9007 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
9009 /* Ignore synthetic glue sections. */
9010 if (strcmp (sec->name, ".glue_7")
9011 && strcmp (sec->name, ".glue_7t"))
9013 if ((bfd_get_section_flags (ibfd, sec)
9014 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
9015 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
9016 only_data_sections = FALSE;
9018 null_input_bfd = FALSE;
9023 if (null_input_bfd || only_data_sections)
9027 /* Complain about various flag mismatches. */
9028 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags),
9029 EF_ARM_EABI_VERSION (out_flags)))
9032 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
9034 (in_flags & EF_ARM_EABIMASK) >> 24,
9035 (out_flags & EF_ARM_EABIMASK) >> 24);
9039 /* Not sure what needs to be checked for EABI versions >= 1. */
9040 /* VxWorks libraries do not use these flags. */
9041 if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed
9042 && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed
9043 && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
9045 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
9048 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
9050 in_flags & EF_ARM_APCS_26 ? 26 : 32,
9051 out_flags & EF_ARM_APCS_26 ? 26 : 32);
9052 flags_compatible = FALSE;
9055 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
9057 if (in_flags & EF_ARM_APCS_FLOAT)
9059 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
9063 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
9066 flags_compatible = FALSE;
9069 if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
9071 if (in_flags & EF_ARM_VFP_FLOAT)
9073 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
9077 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
9080 flags_compatible = FALSE;
9083 if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
9085 if (in_flags & EF_ARM_MAVERICK_FLOAT)
9087 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
9091 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
9094 flags_compatible = FALSE;
9097 #ifdef EF_ARM_SOFT_FLOAT
9098 if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
9100 /* We can allow interworking between code that is VFP format
9101 layout, and uses either soft float or integer regs for
9102 passing floating point arguments and results. We already
9103 know that the APCS_FLOAT flags match; similarly for VFP
9105 if ((in_flags & EF_ARM_APCS_FLOAT) != 0
9106 || (in_flags & EF_ARM_VFP_FLOAT) == 0)
9108 if (in_flags & EF_ARM_SOFT_FLOAT)
9110 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
9114 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
9117 flags_compatible = FALSE;
9122 /* Interworking mismatch is only a warning. */
9123 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
9125 if (in_flags & EF_ARM_INTERWORK)
9128 (_("Warning: %B supports interworking, whereas %B does not"),
9134 (_("Warning: %B does not support interworking, whereas %B does"),
9140 return flags_compatible;
9143 /* Display the flags field. */
9146 elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
9148 FILE * file = (FILE *) ptr;
9149 unsigned long flags;
9151 BFD_ASSERT (abfd != NULL && ptr != NULL);
9153 /* Print normal ELF private data. */
9154 _bfd_elf_print_private_bfd_data (abfd, ptr);
9156 flags = elf_elfheader (abfd)->e_flags;
9157 /* Ignore init flag - it may not be set, despite the flags field
9158 containing valid data. */
9160 /* xgettext:c-format */
9161 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
9163 switch (EF_ARM_EABI_VERSION (flags))
9165 case EF_ARM_EABI_UNKNOWN:
9166 /* The following flag bits are GNU extensions and not part of the
9167 official ARM ELF extended ABI. Hence they are only decoded if
9168 the EABI version is not set. */
9169 if (flags & EF_ARM_INTERWORK)
9170 fprintf (file, _(" [interworking enabled]"));
9172 if (flags & EF_ARM_APCS_26)
9173 fprintf (file, " [APCS-26]");
9175 fprintf (file, " [APCS-32]");
9177 if (flags & EF_ARM_VFP_FLOAT)
9178 fprintf (file, _(" [VFP float format]"));
9179 else if (flags & EF_ARM_MAVERICK_FLOAT)
9180 fprintf (file, _(" [Maverick float format]"));
9182 fprintf (file, _(" [FPA float format]"));
9184 if (flags & EF_ARM_APCS_FLOAT)
9185 fprintf (file, _(" [floats passed in float registers]"));
9187 if (flags & EF_ARM_PIC)
9188 fprintf (file, _(" [position independent]"));
9190 if (flags & EF_ARM_NEW_ABI)
9191 fprintf (file, _(" [new ABI]"));
9193 if (flags & EF_ARM_OLD_ABI)
9194 fprintf (file, _(" [old ABI]"));
9196 if (flags & EF_ARM_SOFT_FLOAT)
9197 fprintf (file, _(" [software FP]"));
9199 flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
9200 | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
9201 | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
9202 | EF_ARM_MAVERICK_FLOAT);
9205 case EF_ARM_EABI_VER1:
9206 fprintf (file, _(" [Version1 EABI]"));
9208 if (flags & EF_ARM_SYMSARESORTED)
9209 fprintf (file, _(" [sorted symbol table]"));
9211 fprintf (file, _(" [unsorted symbol table]"));
9213 flags &= ~ EF_ARM_SYMSARESORTED;
9216 case EF_ARM_EABI_VER2:
9217 fprintf (file, _(" [Version2 EABI]"));
9219 if (flags & EF_ARM_SYMSARESORTED)
9220 fprintf (file, _(" [sorted symbol table]"));
9222 fprintf (file, _(" [unsorted symbol table]"));
9224 if (flags & EF_ARM_DYNSYMSUSESEGIDX)
9225 fprintf (file, _(" [dynamic symbols use segment index]"));
9227 if (flags & EF_ARM_MAPSYMSFIRST)
9228 fprintf (file, _(" [mapping symbols precede others]"));
9230 flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
9231 | EF_ARM_MAPSYMSFIRST);
9234 case EF_ARM_EABI_VER3:
9235 fprintf (file, _(" [Version3 EABI]"));
9238 case EF_ARM_EABI_VER4:
9239 fprintf (file, _(" [Version4 EABI]"));
9242 case EF_ARM_EABI_VER5:
9243 fprintf (file, _(" [Version5 EABI]"));
9245 if (flags & EF_ARM_BE8)
9246 fprintf (file, _(" [BE8]"));
9248 if (flags & EF_ARM_LE8)
9249 fprintf (file, _(" [LE8]"));
9251 flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
9255 fprintf (file, _(" <EABI version unrecognised>"));
9259 flags &= ~ EF_ARM_EABIMASK;
9261 if (flags & EF_ARM_RELEXEC)
9262 fprintf (file, _(" [relocatable executable]"));
9264 if (flags & EF_ARM_HASENTRY)
9265 fprintf (file, _(" [has entry point]"));
9267 flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
9270 fprintf (file, _("<Unrecognised flag bits set>"));
9278 elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
9280 switch (ELF_ST_TYPE (elf_sym->st_info))
9283 return ELF_ST_TYPE (elf_sym->st_info);
9286 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
9287 This allows us to distinguish between data used by Thumb instructions
9288 and non-data (which is probably code) inside Thumb regions of an
9290 if (type != STT_OBJECT && type != STT_TLS)
9291 return ELF_ST_TYPE (elf_sym->st_info);
9302 elf32_arm_gc_mark_hook (asection *sec,
9303 struct bfd_link_info *info,
9304 Elf_Internal_Rela *rel,
9305 struct elf_link_hash_entry *h,
9306 Elf_Internal_Sym *sym)
9309 switch (ELF32_R_TYPE (rel->r_info))
9311 case R_ARM_GNU_VTINHERIT:
9312 case R_ARM_GNU_VTENTRY:
9316 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
9319 /* Update the got entry reference counts for the section being removed. */
9322 elf32_arm_gc_sweep_hook (bfd * abfd,
9323 struct bfd_link_info * info,
9325 const Elf_Internal_Rela * relocs)
9327 Elf_Internal_Shdr *symtab_hdr;
9328 struct elf_link_hash_entry **sym_hashes;
9329 bfd_signed_vma *local_got_refcounts;
9330 const Elf_Internal_Rela *rel, *relend;
9331 struct elf32_arm_link_hash_table * globals;
9333 if (info->relocatable)
9336 globals = elf32_arm_hash_table (info);
9338 elf_section_data (sec)->local_dynrel = NULL;
9340 symtab_hdr = & elf_symtab_hdr (abfd);
9341 sym_hashes = elf_sym_hashes (abfd);
9342 local_got_refcounts = elf_local_got_refcounts (abfd);
9344 check_use_blx (globals);
9346 relend = relocs + sec->reloc_count;
9347 for (rel = relocs; rel < relend; rel++)
9349 unsigned long r_symndx;
9350 struct elf_link_hash_entry *h = NULL;
9353 r_symndx = ELF32_R_SYM (rel->r_info);
9354 if (r_symndx >= symtab_hdr->sh_info)
9356 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
9357 while (h->root.type == bfd_link_hash_indirect
9358 || h->root.type == bfd_link_hash_warning)
9359 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9362 r_type = ELF32_R_TYPE (rel->r_info);
9363 r_type = arm_real_reloc_type (globals, r_type);
9367 case R_ARM_GOT_PREL:
9368 case R_ARM_TLS_GD32:
9369 case R_ARM_TLS_IE32:
9372 if (h->got.refcount > 0)
9373 h->got.refcount -= 1;
9375 else if (local_got_refcounts != NULL)
9377 if (local_got_refcounts[r_symndx] > 0)
9378 local_got_refcounts[r_symndx] -= 1;
9382 case R_ARM_TLS_LDM32:
9383 elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1;
9387 case R_ARM_ABS32_NOI:
9389 case R_ARM_REL32_NOI:
9395 case R_ARM_THM_CALL:
9396 case R_ARM_THM_JUMP24:
9397 case R_ARM_THM_JUMP19:
9398 case R_ARM_MOVW_ABS_NC:
9399 case R_ARM_MOVT_ABS:
9400 case R_ARM_MOVW_PREL_NC:
9401 case R_ARM_MOVT_PREL:
9402 case R_ARM_THM_MOVW_ABS_NC:
9403 case R_ARM_THM_MOVT_ABS:
9404 case R_ARM_THM_MOVW_PREL_NC:
9405 case R_ARM_THM_MOVT_PREL:
9406 /* Should the interworking branches be here also? */
9410 struct elf32_arm_link_hash_entry *eh;
9411 struct elf32_arm_relocs_copied **pp;
9412 struct elf32_arm_relocs_copied *p;
9414 eh = (struct elf32_arm_link_hash_entry *) h;
9416 if (h->plt.refcount > 0)
9418 h->plt.refcount -= 1;
9419 if (r_type == R_ARM_THM_CALL)
9420 eh->plt_maybe_thumb_refcount--;
9422 if (r_type == R_ARM_THM_JUMP24
9423 || r_type == R_ARM_THM_JUMP19)
9424 eh->plt_thumb_refcount--;
9427 if (r_type == R_ARM_ABS32
9428 || r_type == R_ARM_REL32
9429 || r_type == R_ARM_ABS32_NOI
9430 || r_type == R_ARM_REL32_NOI)
9432 for (pp = &eh->relocs_copied; (p = *pp) != NULL;
9434 if (p->section == sec)
9437 if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32
9438 || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI)
9456 /* Look through the relocs for a section during the first phase. */
9459 elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
9460 asection *sec, const Elf_Internal_Rela *relocs)
9462 Elf_Internal_Shdr *symtab_hdr;
9463 struct elf_link_hash_entry **sym_hashes;
9464 const Elf_Internal_Rela *rel;
9465 const Elf_Internal_Rela *rel_end;
9468 bfd_vma *local_got_offsets;
9469 struct elf32_arm_link_hash_table *htab;
9470 bfd_boolean needs_plt;
9472 if (info->relocatable)
9475 BFD_ASSERT (is_arm_elf (abfd));
9477 htab = elf32_arm_hash_table (info);
9480 /* Create dynamic sections for relocatable executables so that we can
9481 copy relocations. */
9482 if (htab->root.is_relocatable_executable
9483 && ! htab->root.dynamic_sections_created)
9485 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
9489 dynobj = elf_hash_table (info)->dynobj;
9490 local_got_offsets = elf_local_got_offsets (abfd);
9492 symtab_hdr = & elf_symtab_hdr (abfd);
9493 sym_hashes = elf_sym_hashes (abfd);
9495 rel_end = relocs + sec->reloc_count;
9496 for (rel = relocs; rel < rel_end; rel++)
9498 struct elf_link_hash_entry *h;
9499 struct elf32_arm_link_hash_entry *eh;
9500 unsigned long r_symndx;
9503 r_symndx = ELF32_R_SYM (rel->r_info);
9504 r_type = ELF32_R_TYPE (rel->r_info);
9505 r_type = arm_real_reloc_type (htab, r_type);
9507 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
9509 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
9514 if (r_symndx < symtab_hdr->sh_info)
9518 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
9519 while (h->root.type == bfd_link_hash_indirect
9520 || h->root.type == bfd_link_hash_warning)
9521 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9524 eh = (struct elf32_arm_link_hash_entry *) h;
9529 case R_ARM_GOT_PREL:
9530 case R_ARM_TLS_GD32:
9531 case R_ARM_TLS_IE32:
9532 /* This symbol requires a global offset table entry. */
9534 int tls_type, old_tls_type;
9538 case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
9539 case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
9540 default: tls_type = GOT_NORMAL; break;
9546 old_tls_type = elf32_arm_hash_entry (h)->tls_type;
9550 bfd_signed_vma *local_got_refcounts;
9552 /* This is a global offset table entry for a local symbol. */
9553 local_got_refcounts = elf_local_got_refcounts (abfd);
9554 if (local_got_refcounts == NULL)
9558 size = symtab_hdr->sh_info;
9559 size *= (sizeof (bfd_signed_vma) + sizeof (char));
9560 local_got_refcounts = bfd_zalloc (abfd, size);
9561 if (local_got_refcounts == NULL)
9563 elf_local_got_refcounts (abfd) = local_got_refcounts;
9564 elf32_arm_local_got_tls_type (abfd)
9565 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
9567 local_got_refcounts[r_symndx] += 1;
9568 old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
9571 /* We will already have issued an error message if there is a
9572 TLS / non-TLS mismatch, based on the symbol type. We don't
9573 support any linker relaxations. So just combine any TLS
9575 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
9576 && tls_type != GOT_NORMAL)
9577 tls_type |= old_tls_type;
9579 if (old_tls_type != tls_type)
9582 elf32_arm_hash_entry (h)->tls_type = tls_type;
9584 elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
9589 case R_ARM_TLS_LDM32:
9590 if (r_type == R_ARM_TLS_LDM32)
9591 htab->tls_ldm_got.refcount++;
9594 case R_ARM_GOTOFF32:
9596 if (htab->sgot == NULL)
9598 if (htab->root.dynobj == NULL)
9599 htab->root.dynobj = abfd;
9600 if (!create_got_section (htab->root.dynobj, info))
9606 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
9607 ldr __GOTT_INDEX__ offsets. */
9608 if (!htab->vxworks_p)
9617 case R_ARM_THM_CALL:
9618 case R_ARM_THM_JUMP24:
9619 case R_ARM_THM_JUMP19:
9624 case R_ARM_ABS32_NOI:
9626 case R_ARM_REL32_NOI:
9627 case R_ARM_MOVW_ABS_NC:
9628 case R_ARM_MOVT_ABS:
9629 case R_ARM_MOVW_PREL_NC:
9630 case R_ARM_MOVT_PREL:
9631 case R_ARM_THM_MOVW_ABS_NC:
9632 case R_ARM_THM_MOVT_ABS:
9633 case R_ARM_THM_MOVW_PREL_NC:
9634 case R_ARM_THM_MOVT_PREL:
9638 /* Should the interworking branches be listed here? */
9641 /* If this reloc is in a read-only section, we might
9642 need a copy reloc. We can't check reliably at this
9643 stage whether the section is read-only, as input
9644 sections have not yet been mapped to output sections.
9645 Tentatively set the flag for now, and correct in
9646 adjust_dynamic_symbol. */
9650 /* We may need a .plt entry if the function this reloc
9651 refers to is in a different object. We can't tell for
9652 sure yet, because something later might force the
9657 /* If we create a PLT entry, this relocation will reference
9658 it, even if it's an ABS32 relocation. */
9659 h->plt.refcount += 1;
9661 /* It's too early to use htab->use_blx here, so we have to
9662 record possible blx references separately from
9663 relocs that definitely need a thumb stub. */
9665 if (r_type == R_ARM_THM_CALL)
9666 eh->plt_maybe_thumb_refcount += 1;
9668 if (r_type == R_ARM_THM_JUMP24
9669 || r_type == R_ARM_THM_JUMP19)
9670 eh->plt_thumb_refcount += 1;
9673 /* If we are creating a shared library or relocatable executable,
9674 and this is a reloc against a global symbol, or a non PC
9675 relative reloc against a local symbol, then we need to copy
9676 the reloc into the shared library. However, if we are linking
9677 with -Bsymbolic, we do not need to copy a reloc against a
9678 global symbol which is defined in an object we are
9679 including in the link (i.e., DEF_REGULAR is set). At
9680 this point we have not seen all the input files, so it is
9681 possible that DEF_REGULAR is not set now but will be set
9682 later (it is never cleared). We account for that
9683 possibility below by storing information in the
9684 relocs_copied field of the hash table entry. */
9685 if ((info->shared || htab->root.is_relocatable_executable)
9686 && (sec->flags & SEC_ALLOC) != 0
9687 && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI)
9688 || (h != NULL && ! h->needs_plt
9689 && (! info->symbolic || ! h->def_regular))))
9691 struct elf32_arm_relocs_copied *p, **head;
9693 /* When creating a shared object, we must copy these
9694 reloc types into the output file. We create a reloc
9695 section in dynobj and make room for this reloc. */
9698 sreloc = _bfd_elf_make_dynamic_reloc_section
9699 (sec, dynobj, 2, abfd, ! htab->use_rel);
9704 /* BPABI objects never have dynamic relocations mapped. */
9705 if (! htab->symbian_p)
9709 flags = bfd_get_section_flags (dynobj, sreloc);
9710 flags |= (SEC_LOAD | SEC_ALLOC);
9711 bfd_set_section_flags (dynobj, sreloc, flags);
9715 /* If this is a global symbol, we count the number of
9716 relocations we need for this symbol. */
9719 head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied;
9723 /* Track dynamic relocs needed for local syms too.
9724 We really need local syms available to do this
9730 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
9735 vpp = &elf_section_data (s)->local_dynrel;
9736 head = (struct elf32_arm_relocs_copied **) vpp;
9740 if (p == NULL || p->section != sec)
9742 bfd_size_type amt = sizeof *p;
9744 p = bfd_alloc (htab->root.dynobj, amt);
9754 if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI)
9760 /* This relocation describes the C++ object vtable hierarchy.
9761 Reconstruct it for later use during GC. */
9762 case R_ARM_GNU_VTINHERIT:
9763 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
9767 /* This relocation describes which C++ vtable entries are actually
9768 used. Record for later use during GC. */
9769 case R_ARM_GNU_VTENTRY:
9770 BFD_ASSERT (h != NULL);
9772 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
9781 /* Unwinding tables are not referenced directly. This pass marks them as
9782 required if the corresponding code section is marked. */
9785 elf32_arm_gc_mark_extra_sections (struct bfd_link_info *info,
9786 elf_gc_mark_hook_fn gc_mark_hook)
9789 Elf_Internal_Shdr **elf_shdrp;
9792 /* Marking EH data may cause additional code sections to be marked,
9793 requiring multiple passes. */
9798 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
9802 if (! is_arm_elf (sub))
9805 elf_shdrp = elf_elfsections (sub);
9806 for (o = sub->sections; o != NULL; o = o->next)
9808 Elf_Internal_Shdr *hdr;
9810 hdr = &elf_section_data (o)->this_hdr;
9811 if (hdr->sh_type == SHT_ARM_EXIDX
9813 && hdr->sh_link < elf_numsections (sub)
9815 && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
9818 if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
9828 /* Treat mapping symbols as special target symbols. */
9831 elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
9833 return bfd_is_arm_special_symbol_name (sym->name,
9834 BFD_ARM_SPECIAL_SYM_TYPE_ANY);
9837 /* This is a copy of elf_find_function() from elf.c except that
9838 ARM mapping symbols are ignored when looking for function names
9839 and STT_ARM_TFUNC is considered to a function type. */
9842 arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
9846 const char ** filename_ptr,
9847 const char ** functionname_ptr)
9849 const char * filename = NULL;
9850 asymbol * func = NULL;
9851 bfd_vma low_func = 0;
9854 for (p = symbols; *p != NULL; p++)
9858 q = (elf_symbol_type *) *p;
9860 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
9865 filename = bfd_asymbol_name (&q->symbol);
9870 /* Skip mapping symbols. */
9871 if ((q->symbol.flags & BSF_LOCAL)
9872 && bfd_is_arm_special_symbol_name (q->symbol.name,
9873 BFD_ARM_SPECIAL_SYM_TYPE_ANY))
9876 if (bfd_get_section (&q->symbol) == section
9877 && q->symbol.value >= low_func
9878 && q->symbol.value <= offset)
9880 func = (asymbol *) q;
9881 low_func = q->symbol.value;
9891 *filename_ptr = filename;
9892 if (functionname_ptr)
9893 *functionname_ptr = bfd_asymbol_name (func);
9899 /* Find the nearest line to a particular section and offset, for error
9900 reporting. This code is a duplicate of the code in elf.c, except
9901 that it uses arm_elf_find_function. */
9904 elf32_arm_find_nearest_line (bfd * abfd,
9908 const char ** filename_ptr,
9909 const char ** functionname_ptr,
9910 unsigned int * line_ptr)
9912 bfd_boolean found = FALSE;
9914 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
9916 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
9917 filename_ptr, functionname_ptr,
9919 & elf_tdata (abfd)->dwarf2_find_line_info))
9921 if (!*functionname_ptr)
9922 arm_elf_find_function (abfd, section, symbols, offset,
9923 *filename_ptr ? NULL : filename_ptr,
9929 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
9930 & found, filename_ptr,
9931 functionname_ptr, line_ptr,
9932 & elf_tdata (abfd)->line_info))
9935 if (found && (*functionname_ptr || *line_ptr))
9938 if (symbols == NULL)
9941 if (! arm_elf_find_function (abfd, section, symbols, offset,
9942 filename_ptr, functionname_ptr))
9950 elf32_arm_find_inliner_info (bfd * abfd,
9951 const char ** filename_ptr,
9952 const char ** functionname_ptr,
9953 unsigned int * line_ptr)
9956 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
9957 functionname_ptr, line_ptr,
9958 & elf_tdata (abfd)->dwarf2_find_line_info);
9962 /* Adjust a symbol defined by a dynamic object and referenced by a
9963 regular object. The current definition is in some section of the
9964 dynamic object, but we're not including those sections. We have to
9965 change the definition to something the rest of the link can
9969 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
9970 struct elf_link_hash_entry * h)
9974 struct elf32_arm_link_hash_entry * eh;
9975 struct elf32_arm_link_hash_table *globals;
9977 globals = elf32_arm_hash_table (info);
9978 dynobj = elf_hash_table (info)->dynobj;
9980 /* Make sure we know what is going on here. */
9981 BFD_ASSERT (dynobj != NULL
9983 || h->u.weakdef != NULL
9986 && !h->def_regular)));
9988 eh = (struct elf32_arm_link_hash_entry *) h;
9990 /* If this is a function, put it in the procedure linkage table. We
9991 will fill in the contents of the procedure linkage table later,
9992 when we know the address of the .got section. */
9993 if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
9996 if (h->plt.refcount <= 0
9997 || SYMBOL_CALLS_LOCAL (info, h)
9998 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
9999 && h->root.type == bfd_link_hash_undefweak))
10001 /* This case can occur if we saw a PLT32 reloc in an input
10002 file, but the symbol was never referred to by a dynamic
10003 object, or if all references were garbage collected. In
10004 such a case, we don't actually need to build a procedure
10005 linkage table, and we can just do a PC24 reloc instead. */
10006 h->plt.offset = (bfd_vma) -1;
10007 eh->plt_thumb_refcount = 0;
10008 eh->plt_maybe_thumb_refcount = 0;
10016 /* It's possible that we incorrectly decided a .plt reloc was
10017 needed for an R_ARM_PC24 or similar reloc to a non-function sym
10018 in check_relocs. We can't decide accurately between function
10019 and non-function syms in check-relocs; Objects loaded later in
10020 the link may change h->type. So fix it now. */
10021 h->plt.offset = (bfd_vma) -1;
10022 eh->plt_thumb_refcount = 0;
10023 eh->plt_maybe_thumb_refcount = 0;
10026 /* If this is a weak symbol, and there is a real definition, the
10027 processor independent code will have arranged for us to see the
10028 real definition first, and we can just use the same value. */
10029 if (h->u.weakdef != NULL)
10031 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
10032 || h->u.weakdef->root.type == bfd_link_hash_defweak);
10033 h->root.u.def.section = h->u.weakdef->root.u.def.section;
10034 h->root.u.def.value = h->u.weakdef->root.u.def.value;
10038 /* If there are no non-GOT references, we do not need a copy
10040 if (!h->non_got_ref)
10043 /* This is a reference to a symbol defined by a dynamic object which
10044 is not a function. */
10046 /* If we are creating a shared library, we must presume that the
10047 only references to the symbol are via the global offset table.
10048 For such cases we need not do anything here; the relocations will
10049 be handled correctly by relocate_section. Relocatable executables
10050 can reference data in shared objects directly, so we don't need to
10051 do anything here. */
10052 if (info->shared || globals->root.is_relocatable_executable)
10057 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
10058 h->root.root.string);
10062 /* We must allocate the symbol in our .dynbss section, which will
10063 become part of the .bss section of the executable. There will be
10064 an entry for this symbol in the .dynsym section. The dynamic
10065 object will contain position independent code, so all references
10066 from the dynamic object to this symbol will go through the global
10067 offset table. The dynamic linker will use the .dynsym entry to
10068 determine the address it must put in the global offset table, so
10069 both the dynamic object and the regular object will refer to the
10070 same memory location for the variable. */
10071 s = bfd_get_section_by_name (dynobj, ".dynbss");
10072 BFD_ASSERT (s != NULL);
10074 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
10075 copy the initial value out of the dynamic object and into the
10076 runtime process image. We need to remember the offset into the
10077 .rel(a).bss section we are going to use. */
10078 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
10082 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss"));
10083 BFD_ASSERT (srel != NULL);
10084 srel->size += RELOC_SIZE (globals);
10088 return _bfd_elf_adjust_dynamic_copy (h, s);
10091 /* Allocate space in .plt, .got and associated reloc sections for
10095 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
10097 struct bfd_link_info *info;
10098 struct elf32_arm_link_hash_table *htab;
10099 struct elf32_arm_link_hash_entry *eh;
10100 struct elf32_arm_relocs_copied *p;
10101 bfd_signed_vma thumb_refs;
10103 eh = (struct elf32_arm_link_hash_entry *) h;
10105 if (h->root.type == bfd_link_hash_indirect)
10108 if (h->root.type == bfd_link_hash_warning)
10109 /* When warning symbols are created, they **replace** the "real"
10110 entry in the hash table, thus we never get to see the real
10111 symbol in a hash traversal. So look at it now. */
10112 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10114 info = (struct bfd_link_info *) inf;
10115 htab = elf32_arm_hash_table (info);
10117 if (htab->root.dynamic_sections_created
10118 && h->plt.refcount > 0)
10120 /* Make sure this symbol is output as a dynamic symbol.
10121 Undefined weak syms won't yet be marked as dynamic. */
10122 if (h->dynindx == -1
10123 && !h->forced_local)
10125 if (! bfd_elf_link_record_dynamic_symbol (info, h))
10130 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
10132 asection *s = htab->splt;
10134 /* If this is the first .plt entry, make room for the special
10137 s->size += htab->plt_header_size;
10139 h->plt.offset = s->size;
10141 /* If we will insert a Thumb trampoline before this PLT, leave room
10143 thumb_refs = eh->plt_thumb_refcount;
10144 if (!htab->use_blx)
10145 thumb_refs += eh->plt_maybe_thumb_refcount;
10147 if (thumb_refs > 0)
10149 h->plt.offset += PLT_THUMB_STUB_SIZE;
10150 s->size += PLT_THUMB_STUB_SIZE;
10153 /* If this symbol is not defined in a regular file, and we are
10154 not generating a shared library, then set the symbol to this
10155 location in the .plt. This is required to make function
10156 pointers compare as equal between the normal executable and
10157 the shared library. */
10159 && !h->def_regular)
10161 h->root.u.def.section = s;
10162 h->root.u.def.value = h->plt.offset;
10164 /* Make sure the function is not marked as Thumb, in case
10165 it is the target of an ABS32 relocation, which will
10166 point to the PLT entry. */
10167 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
10168 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
10171 /* Make room for this entry. */
10172 s->size += htab->plt_entry_size;
10174 if (!htab->symbian_p)
10176 /* We also need to make an entry in the .got.plt section, which
10177 will be placed in the .got section by the linker script. */
10178 eh->plt_got_offset = htab->sgotplt->size;
10179 htab->sgotplt->size += 4;
10182 /* We also need to make an entry in the .rel(a).plt section. */
10183 htab->srelplt->size += RELOC_SIZE (htab);
10185 /* VxWorks executables have a second set of relocations for
10186 each PLT entry. They go in a separate relocation section,
10187 which is processed by the kernel loader. */
10188 if (htab->vxworks_p && !info->shared)
10190 /* There is a relocation for the initial PLT entry:
10191 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
10192 if (h->plt.offset == htab->plt_header_size)
10193 htab->srelplt2->size += RELOC_SIZE (htab);
10195 /* There are two extra relocations for each subsequent
10196 PLT entry: an R_ARM_32 relocation for the GOT entry,
10197 and an R_ARM_32 relocation for the PLT entry. */
10198 htab->srelplt2->size += RELOC_SIZE (htab) * 2;
10203 h->plt.offset = (bfd_vma) -1;
10209 h->plt.offset = (bfd_vma) -1;
10213 if (h->got.refcount > 0)
10217 int tls_type = elf32_arm_hash_entry (h)->tls_type;
10220 /* Make sure this symbol is output as a dynamic symbol.
10221 Undefined weak syms won't yet be marked as dynamic. */
10222 if (h->dynindx == -1
10223 && !h->forced_local)
10225 if (! bfd_elf_link_record_dynamic_symbol (info, h))
10229 if (!htab->symbian_p)
10232 h->got.offset = s->size;
10234 if (tls_type == GOT_UNKNOWN)
10237 if (tls_type == GOT_NORMAL)
10238 /* Non-TLS symbols need one GOT slot. */
10242 if (tls_type & GOT_TLS_GD)
10243 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
10245 if (tls_type & GOT_TLS_IE)
10246 /* R_ARM_TLS_IE32 needs one GOT slot. */
10250 dyn = htab->root.dynamic_sections_created;
10253 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
10255 || !SYMBOL_REFERENCES_LOCAL (info, h)))
10258 if (tls_type != GOT_NORMAL
10259 && (info->shared || indx != 0)
10260 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
10261 || h->root.type != bfd_link_hash_undefweak))
10263 if (tls_type & GOT_TLS_IE)
10264 htab->srelgot->size += RELOC_SIZE (htab);
10266 if (tls_type & GOT_TLS_GD)
10267 htab->srelgot->size += RELOC_SIZE (htab);
10269 if ((tls_type & GOT_TLS_GD) && indx != 0)
10270 htab->srelgot->size += RELOC_SIZE (htab);
10272 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
10273 || h->root.type != bfd_link_hash_undefweak)
10275 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
10276 htab->srelgot->size += RELOC_SIZE (htab);
10280 h->got.offset = (bfd_vma) -1;
10282 /* Allocate stubs for exported Thumb functions on v4t. */
10283 if (!htab->use_blx && h->dynindx != -1
10285 && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
10286 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
10288 struct elf_link_hash_entry * th;
10289 struct bfd_link_hash_entry * bh;
10290 struct elf_link_hash_entry * myh;
10294 /* Create a new symbol to regist the real location of the function. */
10295 s = h->root.u.def.section;
10296 sprintf (name, "__real_%s", h->root.root.string);
10297 _bfd_generic_link_add_one_symbol (info, s->owner,
10298 name, BSF_GLOBAL, s,
10299 h->root.u.def.value,
10300 NULL, TRUE, FALSE, &bh);
10302 myh = (struct elf_link_hash_entry *) bh;
10303 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
10304 myh->forced_local = 1;
10305 eh->export_glue = myh;
10306 th = record_arm_to_thumb_glue (info, h);
10307 /* Point the symbol at the stub. */
10308 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
10309 h->root.u.def.section = th->root.u.def.section;
10310 h->root.u.def.value = th->root.u.def.value & ~1;
10313 if (eh->relocs_copied == NULL)
10316 /* In the shared -Bsymbolic case, discard space allocated for
10317 dynamic pc-relative relocs against symbols which turn out to be
10318 defined in regular objects. For the normal shared case, discard
10319 space for pc-relative relocs that have become local due to symbol
10320 visibility changes. */
10322 if (info->shared || htab->root.is_relocatable_executable)
10324 /* The only relocs that use pc_count are R_ARM_REL32 and
10325 R_ARM_REL32_NOI, which will appear on something like
10326 ".long foo - .". We want calls to protected symbols to resolve
10327 directly to the function rather than going via the plt. If people
10328 want function pointer comparisons to work as expected then they
10329 should avoid writing assembly like ".long foo - .". */
10330 if (SYMBOL_CALLS_LOCAL (info, h))
10332 struct elf32_arm_relocs_copied **pp;
10334 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
10336 p->count -= p->pc_count;
10345 if (elf32_arm_hash_table (info)->vxworks_p)
10347 struct elf32_arm_relocs_copied **pp;
10349 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
10351 if (strcmp (p->section->output_section->name, ".tls_vars") == 0)
10358 /* Also discard relocs on undefined weak syms with non-default
10360 if (eh->relocs_copied != NULL
10361 && h->root.type == bfd_link_hash_undefweak)
10363 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
10364 eh->relocs_copied = NULL;
10366 /* Make sure undefined weak symbols are output as a dynamic
10368 else if (h->dynindx == -1
10369 && !h->forced_local)
10371 if (! bfd_elf_link_record_dynamic_symbol (info, h))
10376 else if (htab->root.is_relocatable_executable && h->dynindx == -1
10377 && h->root.type == bfd_link_hash_new)
10379 /* Output absolute symbols so that we can create relocations
10380 against them. For normal symbols we output a relocation
10381 against the section that contains them. */
10382 if (! bfd_elf_link_record_dynamic_symbol (info, h))
10389 /* For the non-shared case, discard space for relocs against
10390 symbols which turn out to need copy relocs or are not
10393 if (!h->non_got_ref
10394 && ((h->def_dynamic
10395 && !h->def_regular)
10396 || (htab->root.dynamic_sections_created
10397 && (h->root.type == bfd_link_hash_undefweak
10398 || h->root.type == bfd_link_hash_undefined))))
10400 /* Make sure this symbol is output as a dynamic symbol.
10401 Undefined weak syms won't yet be marked as dynamic. */
10402 if (h->dynindx == -1
10403 && !h->forced_local)
10405 if (! bfd_elf_link_record_dynamic_symbol (info, h))
10409 /* If that succeeded, we know we'll be keeping all the
10411 if (h->dynindx != -1)
10415 eh->relocs_copied = NULL;
10420 /* Finally, allocate space. */
10421 for (p = eh->relocs_copied; p != NULL; p = p->next)
10423 asection *sreloc = elf_section_data (p->section)->sreloc;
10424 sreloc->size += p->count * RELOC_SIZE (htab);
10430 /* Find any dynamic relocs that apply to read-only sections. */
10433 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf)
10435 struct elf32_arm_link_hash_entry * eh;
10436 struct elf32_arm_relocs_copied * p;
10438 if (h->root.type == bfd_link_hash_warning)
10439 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10441 eh = (struct elf32_arm_link_hash_entry *) h;
10442 for (p = eh->relocs_copied; p != NULL; p = p->next)
10444 asection *s = p->section;
10446 if (s != NULL && (s->flags & SEC_READONLY) != 0)
10448 struct bfd_link_info *info = (struct bfd_link_info *) inf;
10450 info->flags |= DF_TEXTREL;
10452 /* Not an error, just cut short the traversal. */
10460 bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info,
10463 struct elf32_arm_link_hash_table *globals;
10465 globals = elf32_arm_hash_table (info);
10466 globals->byteswap_code = byteswap_code;
10469 /* Set the sizes of the dynamic sections. */
10472 elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
10473 struct bfd_link_info * info)
10478 bfd_boolean relocs;
10480 struct elf32_arm_link_hash_table *htab;
10482 htab = elf32_arm_hash_table (info);
10483 dynobj = elf_hash_table (info)->dynobj;
10484 BFD_ASSERT (dynobj != NULL);
10485 check_use_blx (htab);
10487 if (elf_hash_table (info)->dynamic_sections_created)
10489 /* Set the contents of the .interp section to the interpreter. */
10490 if (info->executable)
10492 s = bfd_get_section_by_name (dynobj, ".interp");
10493 BFD_ASSERT (s != NULL);
10494 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
10495 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
10499 /* Set up .got offsets for local syms, and space for local dynamic
10501 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10503 bfd_signed_vma *local_got;
10504 bfd_signed_vma *end_local_got;
10505 char *local_tls_type;
10506 bfd_size_type locsymcount;
10507 Elf_Internal_Shdr *symtab_hdr;
10509 bfd_boolean is_vxworks = elf32_arm_hash_table (info)->vxworks_p;
10511 if (! is_arm_elf (ibfd))
10514 for (s = ibfd->sections; s != NULL; s = s->next)
10516 struct elf32_arm_relocs_copied *p;
10518 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
10520 if (!bfd_is_abs_section (p->section)
10521 && bfd_is_abs_section (p->section->output_section))
10523 /* Input section has been discarded, either because
10524 it is a copy of a linkonce section or due to
10525 linker script /DISCARD/, so we'll be discarding
10528 else if (is_vxworks
10529 && strcmp (p->section->output_section->name,
10532 /* Relocations in vxworks .tls_vars sections are
10533 handled specially by the loader. */
10535 else if (p->count != 0)
10537 srel = elf_section_data (p->section)->sreloc;
10538 srel->size += p->count * RELOC_SIZE (htab);
10539 if ((p->section->output_section->flags & SEC_READONLY) != 0)
10540 info->flags |= DF_TEXTREL;
10545 local_got = elf_local_got_refcounts (ibfd);
10549 symtab_hdr = & elf_symtab_hdr (ibfd);
10550 locsymcount = symtab_hdr->sh_info;
10551 end_local_got = local_got + locsymcount;
10552 local_tls_type = elf32_arm_local_got_tls_type (ibfd);
10554 srel = htab->srelgot;
10555 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
10557 if (*local_got > 0)
10559 *local_got = s->size;
10560 if (*local_tls_type & GOT_TLS_GD)
10561 /* TLS_GD relocs need an 8-byte structure in the GOT. */
10563 if (*local_tls_type & GOT_TLS_IE)
10565 if (*local_tls_type == GOT_NORMAL)
10568 if (info->shared || *local_tls_type == GOT_TLS_GD)
10569 srel->size += RELOC_SIZE (htab);
10572 *local_got = (bfd_vma) -1;
10576 if (htab->tls_ldm_got.refcount > 0)
10578 /* Allocate two GOT entries and one dynamic relocation (if necessary)
10579 for R_ARM_TLS_LDM32 relocations. */
10580 htab->tls_ldm_got.offset = htab->sgot->size;
10581 htab->sgot->size += 8;
10583 htab->srelgot->size += RELOC_SIZE (htab);
10586 htab->tls_ldm_got.offset = -1;
10588 /* Allocate global sym .plt and .got entries, and space for global
10589 sym dynamic relocs. */
10590 elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info);
10592 /* Here we rummage through the found bfds to collect glue information. */
10593 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
10595 if (! is_arm_elf (ibfd))
10598 /* Initialise mapping tables for code/data. */
10599 bfd_elf32_arm_init_maps (ibfd);
10601 if (!bfd_elf32_arm_process_before_allocation (ibfd, info)
10602 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info))
10603 /* xgettext:c-format */
10604 _bfd_error_handler (_("Errors encountered processing file %s"),
10608 /* The check_relocs and adjust_dynamic_symbol entry points have
10609 determined the sizes of the various dynamic sections. Allocate
10610 memory for them. */
10613 for (s = dynobj->sections; s != NULL; s = s->next)
10617 if ((s->flags & SEC_LINKER_CREATED) == 0)
10620 /* It's OK to base decisions on the section name, because none
10621 of the dynobj section names depend upon the input files. */
10622 name = bfd_get_section_name (dynobj, s);
10624 if (strcmp (name, ".plt") == 0)
10626 /* Remember whether there is a PLT. */
10627 plt = s->size != 0;
10629 else if (CONST_STRNEQ (name, ".rel"))
10633 /* Remember whether there are any reloc sections other
10634 than .rel(a).plt and .rela.plt.unloaded. */
10635 if (s != htab->srelplt && s != htab->srelplt2)
10638 /* We use the reloc_count field as a counter if we need
10639 to copy relocs into the output file. */
10640 s->reloc_count = 0;
10643 else if (! CONST_STRNEQ (name, ".got")
10644 && strcmp (name, ".dynbss") != 0)
10646 /* It's not one of our sections, so don't allocate space. */
10652 /* If we don't need this section, strip it from the
10653 output file. This is mostly to handle .rel(a).bss and
10654 .rel(a).plt. We must create both sections in
10655 create_dynamic_sections, because they must be created
10656 before the linker maps input sections to output
10657 sections. The linker does that before
10658 adjust_dynamic_symbol is called, and it is that
10659 function which decides whether anything needs to go
10660 into these sections. */
10661 s->flags |= SEC_EXCLUDE;
10665 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10668 /* Allocate memory for the section contents. */
10669 s->contents = bfd_zalloc (dynobj, s->size);
10670 if (s->contents == NULL)
10674 if (elf_hash_table (info)->dynamic_sections_created)
10676 /* Add some entries to the .dynamic section. We fill in the
10677 values later, in elf32_arm_finish_dynamic_sections, but we
10678 must add the entries now so that we get the correct size for
10679 the .dynamic section. The DT_DEBUG entry is filled in by the
10680 dynamic linker and used by the debugger. */
10681 #define add_dynamic_entry(TAG, VAL) \
10682 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10684 if (info->executable)
10686 if (!add_dynamic_entry (DT_DEBUG, 0))
10692 if ( !add_dynamic_entry (DT_PLTGOT, 0)
10693 || !add_dynamic_entry (DT_PLTRELSZ, 0)
10694 || !add_dynamic_entry (DT_PLTREL,
10695 htab->use_rel ? DT_REL : DT_RELA)
10696 || !add_dynamic_entry (DT_JMPREL, 0))
10704 if (!add_dynamic_entry (DT_REL, 0)
10705 || !add_dynamic_entry (DT_RELSZ, 0)
10706 || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab)))
10711 if (!add_dynamic_entry (DT_RELA, 0)
10712 || !add_dynamic_entry (DT_RELASZ, 0)
10713 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
10718 /* If any dynamic relocs apply to a read-only section,
10719 then we need a DT_TEXTREL entry. */
10720 if ((info->flags & DF_TEXTREL) == 0)
10721 elf_link_hash_traverse (& htab->root, elf32_arm_readonly_dynrelocs,
10724 if ((info->flags & DF_TEXTREL) != 0)
10726 if (!add_dynamic_entry (DT_TEXTREL, 0))
10729 if (htab->vxworks_p
10730 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
10733 #undef add_dynamic_entry
10738 /* Finish up dynamic symbol handling. We set the contents of various
10739 dynamic sections here. */
10742 elf32_arm_finish_dynamic_symbol (bfd * output_bfd,
10743 struct bfd_link_info * info,
10744 struct elf_link_hash_entry * h,
10745 Elf_Internal_Sym * sym)
10748 struct elf32_arm_link_hash_table *htab;
10749 struct elf32_arm_link_hash_entry *eh;
10751 dynobj = elf_hash_table (info)->dynobj;
10752 htab = elf32_arm_hash_table (info);
10753 eh = (struct elf32_arm_link_hash_entry *) h;
10755 if (h->plt.offset != (bfd_vma) -1)
10761 Elf_Internal_Rela rel;
10763 /* This symbol has an entry in the procedure linkage table. Set
10766 BFD_ASSERT (h->dynindx != -1);
10768 splt = bfd_get_section_by_name (dynobj, ".plt");
10769 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt"));
10770 BFD_ASSERT (splt != NULL && srel != NULL);
10772 /* Fill in the entry in the procedure linkage table. */
10773 if (htab->symbian_p)
10775 put_arm_insn (htab, output_bfd,
10776 elf32_arm_symbian_plt_entry[0],
10777 splt->contents + h->plt.offset);
10778 bfd_put_32 (output_bfd,
10779 elf32_arm_symbian_plt_entry[1],
10780 splt->contents + h->plt.offset + 4);
10782 /* Fill in the entry in the .rel.plt section. */
10783 rel.r_offset = (splt->output_section->vma
10784 + splt->output_offset
10785 + h->plt.offset + 4);
10786 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
10788 /* Get the index in the procedure linkage table which
10789 corresponds to this symbol. This is the index of this symbol
10790 in all the symbols for which we are making plt entries. The
10791 first entry in the procedure linkage table is reserved. */
10792 plt_index = ((h->plt.offset - htab->plt_header_size)
10793 / htab->plt_entry_size);
10797 bfd_vma got_offset, got_address, plt_address;
10798 bfd_vma got_displacement;
10802 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
10803 BFD_ASSERT (sgot != NULL);
10805 /* Get the offset into the .got.plt table of the entry that
10806 corresponds to this function. */
10807 got_offset = eh->plt_got_offset;
10809 /* Get the index in the procedure linkage table which
10810 corresponds to this symbol. This is the index of this symbol
10811 in all the symbols for which we are making plt entries. The
10812 first three entries in .got.plt are reserved; after that
10813 symbols appear in the same order as in .plt. */
10814 plt_index = (got_offset - 12) / 4;
10816 /* Calculate the address of the GOT entry. */
10817 got_address = (sgot->output_section->vma
10818 + sgot->output_offset
10821 /* ...and the address of the PLT entry. */
10822 plt_address = (splt->output_section->vma
10823 + splt->output_offset
10826 ptr = htab->splt->contents + h->plt.offset;
10827 if (htab->vxworks_p && info->shared)
10832 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
10834 val = elf32_arm_vxworks_shared_plt_entry[i];
10836 val |= got_address - sgot->output_section->vma;
10838 val |= plt_index * RELOC_SIZE (htab);
10839 if (i == 2 || i == 5)
10840 bfd_put_32 (output_bfd, val, ptr);
10842 put_arm_insn (htab, output_bfd, val, ptr);
10845 else if (htab->vxworks_p)
10850 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
10852 val = elf32_arm_vxworks_exec_plt_entry[i];
10854 val |= got_address;
10856 val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2);
10858 val |= plt_index * RELOC_SIZE (htab);
10859 if (i == 2 || i == 5)
10860 bfd_put_32 (output_bfd, val, ptr);
10862 put_arm_insn (htab, output_bfd, val, ptr);
10865 loc = (htab->srelplt2->contents
10866 + (plt_index * 2 + 1) * RELOC_SIZE (htab));
10868 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
10869 referencing the GOT for this PLT entry. */
10870 rel.r_offset = plt_address + 8;
10871 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
10872 rel.r_addend = got_offset;
10873 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
10874 loc += RELOC_SIZE (htab);
10876 /* Create the R_ARM_ABS32 relocation referencing the
10877 beginning of the PLT for this GOT entry. */
10878 rel.r_offset = got_address;
10879 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
10881 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
10885 bfd_signed_vma thumb_refs;
10886 /* Calculate the displacement between the PLT slot and the
10887 entry in the GOT. The eight-byte offset accounts for the
10888 value produced by adding to pc in the first instruction
10889 of the PLT stub. */
10890 got_displacement = got_address - (plt_address + 8);
10892 BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
10894 thumb_refs = eh->plt_thumb_refcount;
10895 if (!htab->use_blx)
10896 thumb_refs += eh->plt_maybe_thumb_refcount;
10898 if (thumb_refs > 0)
10900 put_thumb_insn (htab, output_bfd,
10901 elf32_arm_plt_thumb_stub[0], ptr - 4);
10902 put_thumb_insn (htab, output_bfd,
10903 elf32_arm_plt_thumb_stub[1], ptr - 2);
10906 put_arm_insn (htab, output_bfd,
10907 elf32_arm_plt_entry[0]
10908 | ((got_displacement & 0x0ff00000) >> 20),
10910 put_arm_insn (htab, output_bfd,
10911 elf32_arm_plt_entry[1]
10912 | ((got_displacement & 0x000ff000) >> 12),
10914 put_arm_insn (htab, output_bfd,
10915 elf32_arm_plt_entry[2]
10916 | (got_displacement & 0x00000fff),
10918 #ifdef FOUR_WORD_PLT
10919 bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12);
10923 /* Fill in the entry in the global offset table. */
10924 bfd_put_32 (output_bfd,
10925 (splt->output_section->vma
10926 + splt->output_offset),
10927 sgot->contents + got_offset);
10929 /* Fill in the entry in the .rel(a).plt section. */
10931 rel.r_offset = got_address;
10932 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
10935 loc = srel->contents + plt_index * RELOC_SIZE (htab);
10936 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
10938 if (!h->def_regular)
10940 /* Mark the symbol as undefined, rather than as defined in
10941 the .plt section. Leave the value alone. */
10942 sym->st_shndx = SHN_UNDEF;
10943 /* If the symbol is weak, we do need to clear the value.
10944 Otherwise, the PLT entry would provide a definition for
10945 the symbol even if the symbol wasn't defined anywhere,
10946 and so the symbol would never be NULL. */
10947 if (!h->ref_regular_nonweak)
10952 if (h->got.offset != (bfd_vma) -1
10953 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0
10954 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0)
10958 Elf_Internal_Rela rel;
10962 /* This symbol has an entry in the global offset table. Set it
10964 sgot = bfd_get_section_by_name (dynobj, ".got");
10965 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got"));
10966 BFD_ASSERT (sgot != NULL && srel != NULL);
10968 offset = (h->got.offset & ~(bfd_vma) 1);
10970 rel.r_offset = (sgot->output_section->vma
10971 + sgot->output_offset
10974 /* If this is a static link, or it is a -Bsymbolic link and the
10975 symbol is defined locally or was forced to be local because
10976 of a version file, we just want to emit a RELATIVE reloc.
10977 The entry in the global offset table will already have been
10978 initialized in the relocate_section function. */
10980 && SYMBOL_REFERENCES_LOCAL (info, h))
10982 BFD_ASSERT ((h->got.offset & 1) != 0);
10983 rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
10984 if (!htab->use_rel)
10986 rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
10987 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
10992 BFD_ASSERT ((h->got.offset & 1) == 0);
10993 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
10994 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
10997 loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab);
10998 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
11004 Elf_Internal_Rela rel;
11007 /* This symbol needs a copy reloc. Set it up. */
11008 BFD_ASSERT (h->dynindx != -1
11009 && (h->root.type == bfd_link_hash_defined
11010 || h->root.type == bfd_link_hash_defweak));
11012 s = bfd_get_section_by_name (h->root.u.def.section->owner,
11013 RELOC_SECTION (htab, ".bss"));
11014 BFD_ASSERT (s != NULL);
11017 rel.r_offset = (h->root.u.def.value
11018 + h->root.u.def.section->output_section->vma
11019 + h->root.u.def.section->output_offset);
11020 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
11021 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
11022 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
11025 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
11026 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
11027 to the ".got" section. */
11028 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
11029 || (!htab->vxworks_p && h == htab->root.hgot))
11030 sym->st_shndx = SHN_ABS;
11035 /* Finish up the dynamic sections. */
11038 elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
11044 dynobj = elf_hash_table (info)->dynobj;
11046 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
11047 BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL);
11048 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
11050 if (elf_hash_table (info)->dynamic_sections_created)
11053 Elf32_External_Dyn *dyncon, *dynconend;
11054 struct elf32_arm_link_hash_table *htab;
11056 htab = elf32_arm_hash_table (info);
11057 splt = bfd_get_section_by_name (dynobj, ".plt");
11058 BFD_ASSERT (splt != NULL && sdyn != NULL);
11060 dyncon = (Elf32_External_Dyn *) sdyn->contents;
11061 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
11063 for (; dyncon < dynconend; dyncon++)
11065 Elf_Internal_Dyn dyn;
11069 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
11076 if (htab->vxworks_p
11077 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
11078 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
11083 goto get_vma_if_bpabi;
11086 goto get_vma_if_bpabi;
11089 goto get_vma_if_bpabi;
11091 name = ".gnu.version";
11092 goto get_vma_if_bpabi;
11094 name = ".gnu.version_d";
11095 goto get_vma_if_bpabi;
11097 name = ".gnu.version_r";
11098 goto get_vma_if_bpabi;
11104 name = RELOC_SECTION (htab, ".plt");
11106 s = bfd_get_section_by_name (output_bfd, name);
11107 BFD_ASSERT (s != NULL);
11108 if (!htab->symbian_p)
11109 dyn.d_un.d_ptr = s->vma;
11111 /* In the BPABI, tags in the PT_DYNAMIC section point
11112 at the file offset, not the memory address, for the
11113 convenience of the post linker. */
11114 dyn.d_un.d_ptr = s->filepos;
11115 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
11119 if (htab->symbian_p)
11124 s = bfd_get_section_by_name (output_bfd,
11125 RELOC_SECTION (htab, ".plt"));
11126 BFD_ASSERT (s != NULL);
11127 dyn.d_un.d_val = s->size;
11128 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
11133 if (!htab->symbian_p)
11135 /* My reading of the SVR4 ABI indicates that the
11136 procedure linkage table relocs (DT_JMPREL) should be
11137 included in the overall relocs (DT_REL). This is
11138 what Solaris does. However, UnixWare can not handle
11139 that case. Therefore, we override the DT_RELSZ entry
11140 here to make it not include the JMPREL relocs. Since
11141 the linker script arranges for .rel(a).plt to follow all
11142 other relocation sections, we don't have to worry
11143 about changing the DT_REL entry. */
11144 s = bfd_get_section_by_name (output_bfd,
11145 RELOC_SECTION (htab, ".plt"));
11147 dyn.d_un.d_val -= s->size;
11148 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
11151 /* Fall through. */
11155 /* In the BPABI, the DT_REL tag must point at the file
11156 offset, not the VMA, of the first relocation
11157 section. So, we use code similar to that in
11158 elflink.c, but do not check for SHF_ALLOC on the
11159 relcoation section, since relocations sections are
11160 never allocated under the BPABI. The comments above
11161 about Unixware notwithstanding, we include all of the
11162 relocations here. */
11163 if (htab->symbian_p)
11166 type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
11167 ? SHT_REL : SHT_RELA);
11168 dyn.d_un.d_val = 0;
11169 for (i = 1; i < elf_numsections (output_bfd); i++)
11171 Elf_Internal_Shdr *hdr
11172 = elf_elfsections (output_bfd)[i];
11173 if (hdr->sh_type == type)
11175 if (dyn.d_tag == DT_RELSZ
11176 || dyn.d_tag == DT_RELASZ)
11177 dyn.d_un.d_val += hdr->sh_size;
11178 else if ((ufile_ptr) hdr->sh_offset
11179 <= dyn.d_un.d_val - 1)
11180 dyn.d_un.d_val = hdr->sh_offset;
11183 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
11187 /* Set the bottom bit of DT_INIT/FINI if the
11188 corresponding function is Thumb. */
11190 name = info->init_function;
11193 name = info->fini_function;
11195 /* If it wasn't set by elf_bfd_final_link
11196 then there is nothing to adjust. */
11197 if (dyn.d_un.d_val != 0)
11199 struct elf_link_hash_entry * eh;
11201 eh = elf_link_hash_lookup (elf_hash_table (info), name,
11202 FALSE, FALSE, TRUE);
11204 && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC)
11206 dyn.d_un.d_val |= 1;
11207 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
11214 /* Fill in the first entry in the procedure linkage table. */
11215 if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size)
11217 const bfd_vma *plt0_entry;
11218 bfd_vma got_address, plt_address, got_displacement;
11220 /* Calculate the addresses of the GOT and PLT. */
11221 got_address = sgot->output_section->vma + sgot->output_offset;
11222 plt_address = splt->output_section->vma + splt->output_offset;
11224 if (htab->vxworks_p)
11226 /* The VxWorks GOT is relocated by the dynamic linker.
11227 Therefore, we must emit relocations rather than simply
11228 computing the values now. */
11229 Elf_Internal_Rela rel;
11231 plt0_entry = elf32_arm_vxworks_exec_plt0_entry;
11232 put_arm_insn (htab, output_bfd, plt0_entry[0],
11233 splt->contents + 0);
11234 put_arm_insn (htab, output_bfd, plt0_entry[1],
11235 splt->contents + 4);
11236 put_arm_insn (htab, output_bfd, plt0_entry[2],
11237 splt->contents + 8);
11238 bfd_put_32 (output_bfd, got_address, splt->contents + 12);
11240 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
11241 rel.r_offset = plt_address + 12;
11242 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
11244 SWAP_RELOC_OUT (htab) (output_bfd, &rel,
11245 htab->srelplt2->contents);
11249 got_displacement = got_address - (plt_address + 16);
11251 plt0_entry = elf32_arm_plt0_entry;
11252 put_arm_insn (htab, output_bfd, plt0_entry[0],
11253 splt->contents + 0);
11254 put_arm_insn (htab, output_bfd, plt0_entry[1],
11255 splt->contents + 4);
11256 put_arm_insn (htab, output_bfd, plt0_entry[2],
11257 splt->contents + 8);
11258 put_arm_insn (htab, output_bfd, plt0_entry[3],
11259 splt->contents + 12);
11261 #ifdef FOUR_WORD_PLT
11262 /* The displacement value goes in the otherwise-unused
11263 last word of the second entry. */
11264 bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
11266 bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
11271 /* UnixWare sets the entsize of .plt to 4, although that doesn't
11272 really seem like the right value. */
11273 if (splt->output_section->owner == output_bfd)
11274 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
11276 if (htab->vxworks_p && !info->shared && htab->splt->size > 0)
11278 /* Correct the .rel(a).plt.unloaded relocations. They will have
11279 incorrect symbol indexes. */
11283 num_plts = ((htab->splt->size - htab->plt_header_size)
11284 / htab->plt_entry_size);
11285 p = htab->srelplt2->contents + RELOC_SIZE (htab);
11287 for (; num_plts; num_plts--)
11289 Elf_Internal_Rela rel;
11291 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
11292 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
11293 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
11294 p += RELOC_SIZE (htab);
11296 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
11297 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
11298 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
11299 p += RELOC_SIZE (htab);
11304 /* Fill in the first three entries in the global offset table. */
11307 if (sgot->size > 0)
11310 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
11312 bfd_put_32 (output_bfd,
11313 sdyn->output_section->vma + sdyn->output_offset,
11315 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
11316 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
11319 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
11326 elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
11328 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
11329 struct elf32_arm_link_hash_table *globals;
11331 i_ehdrp = elf_elfheader (abfd);
11333 if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
11334 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
11336 i_ehdrp->e_ident[EI_OSABI] = 0;
11337 i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
11341 globals = elf32_arm_hash_table (link_info);
11342 if (globals->byteswap_code)
11343 i_ehdrp->e_flags |= EF_ARM_BE8;
11347 static enum elf_reloc_type_class
11348 elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
11350 switch ((int) ELF32_R_TYPE (rela->r_info))
11352 case R_ARM_RELATIVE:
11353 return reloc_class_relative;
11354 case R_ARM_JUMP_SLOT:
11355 return reloc_class_plt;
11357 return reloc_class_copy;
11359 return reloc_class_normal;
11363 /* Set the right machine number for an Arm ELF file. */
11366 elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
11368 if (hdr->sh_type == SHT_NOTE)
11369 *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
11375 elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
11377 bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
11380 /* Return TRUE if this is an unwinding table entry. */
11383 is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
11385 return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind)
11386 || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once));
11390 /* Set the type and flags for an ARM section. We do this by
11391 the section name, which is a hack, but ought to work. */
11394 elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
11398 name = bfd_get_section_name (abfd, sec);
11400 if (is_arm_elf_unwind_section_name (abfd, name))
11402 hdr->sh_type = SHT_ARM_EXIDX;
11403 hdr->sh_flags |= SHF_LINK_ORDER;
11408 /* Handle an ARM specific section when reading an object file. This is
11409 called when bfd_section_from_shdr finds a section with an unknown
11413 elf32_arm_section_from_shdr (bfd *abfd,
11414 Elf_Internal_Shdr * hdr,
11418 /* There ought to be a place to keep ELF backend specific flags, but
11419 at the moment there isn't one. We just keep track of the
11420 sections by their name, instead. Fortunately, the ABI gives
11421 names for all the ARM specific sections, so we will probably get
11423 switch (hdr->sh_type)
11425 case SHT_ARM_EXIDX:
11426 case SHT_ARM_PREEMPTMAP:
11427 case SHT_ARM_ATTRIBUTES:
11434 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
11440 /* A structure used to record a list of sections, independently
11441 of the next and prev fields in the asection structure. */
11442 typedef struct section_list
11445 struct section_list * next;
11446 struct section_list * prev;
11450 /* Unfortunately we need to keep a list of sections for which
11451 an _arm_elf_section_data structure has been allocated. This
11452 is because it is possible for functions like elf32_arm_write_section
11453 to be called on a section which has had an elf_data_structure
11454 allocated for it (and so the used_by_bfd field is valid) but
11455 for which the ARM extended version of this structure - the
11456 _arm_elf_section_data structure - has not been allocated. */
11457 static section_list * sections_with_arm_elf_section_data = NULL;
11460 record_section_with_arm_elf_section_data (asection * sec)
11462 struct section_list * entry;
11464 entry = bfd_malloc (sizeof (* entry));
11468 entry->next = sections_with_arm_elf_section_data;
11469 entry->prev = NULL;
11470 if (entry->next != NULL)
11471 entry->next->prev = entry;
11472 sections_with_arm_elf_section_data = entry;
11475 static struct section_list *
11476 find_arm_elf_section_entry (asection * sec)
11478 struct section_list * entry;
11479 static struct section_list * last_entry = NULL;
11481 /* This is a short cut for the typical case where the sections are added
11482 to the sections_with_arm_elf_section_data list in forward order and
11483 then looked up here in backwards order. This makes a real difference
11484 to the ld-srec/sec64k.exp linker test. */
11485 entry = sections_with_arm_elf_section_data;
11486 if (last_entry != NULL)
11488 if (last_entry->sec == sec)
11489 entry = last_entry;
11490 else if (last_entry->next != NULL
11491 && last_entry->next->sec == sec)
11492 entry = last_entry->next;
11495 for (; entry; entry = entry->next)
11496 if (entry->sec == sec)
11500 /* Record the entry prior to this one - it is the entry we are most
11501 likely to want to locate next time. Also this way if we have been
11502 called from unrecord_section_with_arm_elf_section_data() we will not
11503 be caching a pointer that is about to be freed. */
11504 last_entry = entry->prev;
11509 static _arm_elf_section_data *
11510 get_arm_elf_section_data (asection * sec)
11512 struct section_list * entry;
11514 entry = find_arm_elf_section_entry (sec);
11517 return elf32_arm_section_data (entry->sec);
11523 unrecord_section_with_arm_elf_section_data (asection * sec)
11525 struct section_list * entry;
11527 entry = find_arm_elf_section_entry (sec);
11531 if (entry->prev != NULL)
11532 entry->prev->next = entry->next;
11533 if (entry->next != NULL)
11534 entry->next->prev = entry->prev;
11535 if (entry == sections_with_arm_elf_section_data)
11536 sections_with_arm_elf_section_data = entry->next;
11545 struct bfd_link_info *info;
11548 bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *,
11549 asection *, struct elf_link_hash_entry *);
11550 } output_arch_syminfo;
11552 enum map_symbol_type
11560 /* Output a single mapping symbol. */
11563 elf32_arm_output_map_sym (output_arch_syminfo *osi,
11564 enum map_symbol_type type,
11567 static const char *names[3] = {"$a", "$t", "$d"};
11568 struct elf32_arm_link_hash_table *htab;
11569 Elf_Internal_Sym sym;
11571 htab = elf32_arm_hash_table (osi->info);
11572 sym.st_value = osi->sec->output_section->vma
11573 + osi->sec->output_offset
11577 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
11578 sym.st_shndx = osi->sec_shndx;
11579 if (!osi->func (osi->finfo, names[type], &sym, osi->sec, NULL))
11585 /* Output mapping symbols for PLT entries associated with H. */
11588 elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf)
11590 output_arch_syminfo *osi = (output_arch_syminfo *) inf;
11591 struct elf32_arm_link_hash_table *htab;
11592 struct elf32_arm_link_hash_entry *eh;
11595 htab = elf32_arm_hash_table (osi->info);
11597 if (h->root.type == bfd_link_hash_indirect)
11600 if (h->root.type == bfd_link_hash_warning)
11601 /* When warning symbols are created, they **replace** the "real"
11602 entry in the hash table, thus we never get to see the real
11603 symbol in a hash traversal. So look at it now. */
11604 h = (struct elf_link_hash_entry *) h->root.u.i.link;
11606 if (h->plt.offset == (bfd_vma) -1)
11609 eh = (struct elf32_arm_link_hash_entry *) h;
11610 addr = h->plt.offset;
11611 if (htab->symbian_p)
11613 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11615 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4))
11618 else if (htab->vxworks_p)
11620 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11622 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
11624 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 12))
11626 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 20))
11631 bfd_signed_vma thumb_refs;
11633 thumb_refs = eh->plt_thumb_refcount;
11634 if (!htab->use_blx)
11635 thumb_refs += eh->plt_maybe_thumb_refcount;
11637 if (thumb_refs > 0)
11639 if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr - 4))
11642 #ifdef FOUR_WORD_PLT
11643 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11645 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12))
11648 /* A three-word PLT with no Thumb thunk contains only Arm code,
11649 so only need to output a mapping symbol for the first PLT entry and
11650 entries with thumb thunks. */
11651 if (thumb_refs > 0 || addr == 20)
11653 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11662 /* Output a single local symbol for a generated stub. */
11665 elf32_arm_output_stub_sym (output_arch_syminfo *osi, const char *name,
11666 bfd_vma offset, bfd_vma size)
11668 struct elf32_arm_link_hash_table *htab;
11669 Elf_Internal_Sym sym;
11671 htab = elf32_arm_hash_table (osi->info);
11672 sym.st_value = osi->sec->output_section->vma
11673 + osi->sec->output_offset
11675 sym.st_size = size;
11677 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
11678 sym.st_shndx = osi->sec_shndx;
11679 if (!osi->func (osi->finfo, name, &sym, osi->sec, NULL))
11685 arm_map_one_stub (struct bfd_hash_entry * gen_entry,
11688 struct elf32_arm_stub_hash_entry *stub_entry;
11689 struct bfd_link_info *info;
11690 struct elf32_arm_link_hash_table *htab;
11691 asection *stub_sec;
11694 output_arch_syminfo *osi;
11695 const insn_sequence *template;
11696 enum stub_insn_type prev_type;
11699 enum map_symbol_type sym_type;
11701 /* Massage our args to the form they really have. */
11702 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
11703 osi = (output_arch_syminfo *) in_arg;
11707 htab = elf32_arm_hash_table (info);
11708 stub_sec = stub_entry->stub_sec;
11710 /* Ensure this stub is attached to the current section being
11712 if (stub_sec != osi->sec)
11715 addr = (bfd_vma) stub_entry->stub_offset;
11716 stub_name = stub_entry->output_name;
11718 template = stub_entry->stub_template;
11719 switch(template[0].type)
11722 if (!elf32_arm_output_stub_sym (osi, stub_name, addr, stub_entry->stub_size))
11726 if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1,
11727 stub_entry->stub_size))
11734 prev_type = DATA_TYPE;
11736 for (i = 0; i < stub_entry->stub_template_size; i++)
11738 switch(template[i].type)
11741 sym_type = ARM_MAP_ARM;
11745 sym_type = ARM_MAP_THUMB;
11749 sym_type = ARM_MAP_DATA;
11756 if (template[i].type != prev_type)
11758 prev_type = template[i].type;
11759 if (!elf32_arm_output_map_sym (osi, sym_type, addr + size))
11763 switch(template[i].type)
11785 /* Output mapping symbols for linker generated sections. */
11788 elf32_arm_output_arch_local_syms (bfd *output_bfd,
11789 struct bfd_link_info *info,
11791 bfd_boolean (*func) (void *, const char *,
11792 Elf_Internal_Sym *,
11794 struct elf_link_hash_entry *))
11796 output_arch_syminfo osi;
11797 struct elf32_arm_link_hash_table *htab;
11799 bfd_size_type size;
11801 htab = elf32_arm_hash_table (info);
11802 check_use_blx (htab);
11808 /* ARM->Thumb glue. */
11809 if (htab->arm_glue_size > 0)
11811 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11812 ARM2THUMB_GLUE_SECTION_NAME);
11814 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11815 (output_bfd, osi.sec->output_section);
11816 if (info->shared || htab->root.is_relocatable_executable
11817 || htab->pic_veneer)
11818 size = ARM2THUMB_PIC_GLUE_SIZE;
11819 else if (htab->use_blx)
11820 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
11822 size = ARM2THUMB_STATIC_GLUE_SIZE;
11824 for (offset = 0; offset < htab->arm_glue_size; offset += size)
11826 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset);
11827 elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, offset + size - 4);
11831 /* Thumb->ARM glue. */
11832 if (htab->thumb_glue_size > 0)
11834 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11835 THUMB2ARM_GLUE_SECTION_NAME);
11837 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11838 (output_bfd, osi.sec->output_section);
11839 size = THUMB2ARM_GLUE_SIZE;
11841 for (offset = 0; offset < htab->thumb_glue_size; offset += size)
11843 elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, offset);
11844 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset + 4);
11848 /* ARMv4 BX veneers. */
11849 if (htab->bx_glue_size > 0)
11851 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11852 ARM_BX_GLUE_SECTION_NAME);
11854 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11855 (output_bfd, osi.sec->output_section);
11857 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0);
11860 /* Long calls stubs. */
11861 if (htab->stub_bfd && htab->stub_bfd->sections)
11863 asection* stub_sec;
11865 for (stub_sec = htab->stub_bfd->sections;
11867 stub_sec = stub_sec->next)
11869 /* Ignore non-stub sections. */
11870 if (!strstr (stub_sec->name, STUB_SUFFIX))
11873 osi.sec = stub_sec;
11875 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11876 (output_bfd, osi.sec->output_section);
11878 bfd_hash_traverse (&htab->stub_hash_table, arm_map_one_stub, &osi);
11882 /* Finally, output mapping symbols for the PLT. */
11883 if (!htab->splt || htab->splt->size == 0)
11886 osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
11887 htab->splt->output_section);
11888 osi.sec = htab->splt;
11889 /* Output mapping symbols for the plt header. SymbianOS does not have a
11891 if (htab->vxworks_p)
11893 /* VxWorks shared libraries have no PLT header. */
11896 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
11898 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12))
11902 else if (!htab->symbian_p)
11904 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
11906 #ifndef FOUR_WORD_PLT
11907 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 16))
11912 elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi);
11916 /* Allocate target specific section data. */
11919 elf32_arm_new_section_hook (bfd *abfd, asection *sec)
11921 if (!sec->used_by_bfd)
11923 _arm_elf_section_data *sdata;
11924 bfd_size_type amt = sizeof (*sdata);
11926 sdata = bfd_zalloc (abfd, amt);
11929 sec->used_by_bfd = sdata;
11932 record_section_with_arm_elf_section_data (sec);
11934 return _bfd_elf_new_section_hook (abfd, sec);
11938 /* Used to order a list of mapping symbols by address. */
11941 elf32_arm_compare_mapping (const void * a, const void * b)
11943 const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a;
11944 const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b;
11946 if (amap->vma > bmap->vma)
11948 else if (amap->vma < bmap->vma)
11950 else if (amap->type > bmap->type)
11951 /* Ensure results do not depend on the host qsort for objects with
11952 multiple mapping symbols at the same address by sorting on type
11955 else if (amap->type < bmap->type)
11962 /* Do code byteswapping. Return FALSE afterwards so that the section is
11963 written out as normal. */
11966 elf32_arm_write_section (bfd *output_bfd,
11967 struct bfd_link_info *link_info,
11969 bfd_byte *contents)
11971 int mapcount, errcount;
11972 _arm_elf_section_data *arm_data;
11973 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
11974 elf32_arm_section_map *map;
11975 elf32_vfp11_erratum_list *errnode;
11978 bfd_vma offset = sec->output_section->vma + sec->output_offset;
11982 /* If this section has not been allocated an _arm_elf_section_data
11983 structure then we cannot record anything. */
11984 arm_data = get_arm_elf_section_data (sec);
11985 if (arm_data == NULL)
11988 mapcount = arm_data->mapcount;
11989 map = arm_data->map;
11990 errcount = arm_data->erratumcount;
11994 unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0;
11996 for (errnode = arm_data->erratumlist; errnode != 0;
11997 errnode = errnode->next)
11999 bfd_vma index = errnode->vma - offset;
12001 switch (errnode->type)
12003 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
12005 bfd_vma branch_to_veneer;
12006 /* Original condition code of instruction, plus bit mask for
12007 ARM B instruction. */
12008 unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000)
12011 /* The instruction is before the label. */
12014 /* Above offset included in -4 below. */
12015 branch_to_veneer = errnode->u.b.veneer->vma
12016 - errnode->vma - 4;
12018 if ((signed) branch_to_veneer < -(1 << 25)
12019 || (signed) branch_to_veneer >= (1 << 25))
12020 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
12021 "range"), output_bfd);
12023 insn |= (branch_to_veneer >> 2) & 0xffffff;
12024 contents[endianflip ^ index] = insn & 0xff;
12025 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
12026 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
12027 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
12031 case VFP11_ERRATUM_ARM_VENEER:
12033 bfd_vma branch_from_veneer;
12036 /* Take size of veneer into account. */
12037 branch_from_veneer = errnode->u.v.branch->vma
12038 - errnode->vma - 12;
12040 if ((signed) branch_from_veneer < -(1 << 25)
12041 || (signed) branch_from_veneer >= (1 << 25))
12042 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
12043 "range"), output_bfd);
12045 /* Original instruction. */
12046 insn = errnode->u.v.branch->u.b.vfp_insn;
12047 contents[endianflip ^ index] = insn & 0xff;
12048 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
12049 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
12050 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
12052 /* Branch back to insn after original insn. */
12053 insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff);
12054 contents[endianflip ^ (index + 4)] = insn & 0xff;
12055 contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff;
12056 contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff;
12057 contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff;
12070 if (globals->byteswap_code)
12072 qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
12075 for (i = 0; i < mapcount; i++)
12077 if (i == mapcount - 1)
12080 end = map[i + 1].vma;
12082 switch (map[i].type)
12085 /* Byte swap code words. */
12086 while (ptr + 3 < end)
12088 tmp = contents[ptr];
12089 contents[ptr] = contents[ptr + 3];
12090 contents[ptr + 3] = tmp;
12091 tmp = contents[ptr + 1];
12092 contents[ptr + 1] = contents[ptr + 2];
12093 contents[ptr + 2] = tmp;
12099 /* Byte swap code halfwords. */
12100 while (ptr + 1 < end)
12102 tmp = contents[ptr];
12103 contents[ptr] = contents[ptr + 1];
12104 contents[ptr + 1] = tmp;
12110 /* Leave data alone. */
12118 arm_data->mapcount = 0;
12119 arm_data->mapsize = 0;
12120 arm_data->map = NULL;
12121 unrecord_section_with_arm_elf_section_data (sec);
12127 unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED,
12129 void * ignore ATTRIBUTE_UNUSED)
12131 unrecord_section_with_arm_elf_section_data (sec);
12135 elf32_arm_close_and_cleanup (bfd * abfd)
12137 if (abfd->sections)
12138 bfd_map_over_sections (abfd,
12139 unrecord_section_via_map_over_sections,
12142 return _bfd_elf_close_and_cleanup (abfd);
12146 elf32_arm_bfd_free_cached_info (bfd * abfd)
12148 if (abfd->sections)
12149 bfd_map_over_sections (abfd,
12150 unrecord_section_via_map_over_sections,
12153 return _bfd_free_cached_info (abfd);
12156 /* Display STT_ARM_TFUNC symbols as functions. */
12159 elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
12162 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
12164 if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC)
12165 elfsym->symbol.flags |= BSF_FUNCTION;
12169 /* Mangle thumb function symbols as we read them in. */
12172 elf32_arm_swap_symbol_in (bfd * abfd,
12175 Elf_Internal_Sym *dst)
12177 if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
12180 /* New EABI objects mark thumb function symbols by setting the low bit of
12181 the address. Turn these into STT_ARM_TFUNC. */
12182 if ((ELF_ST_TYPE (dst->st_info) == STT_FUNC)
12183 && (dst->st_value & 1))
12185 dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
12186 dst->st_value &= ~(bfd_vma) 1;
12192 /* Mangle thumb function symbols as we write them out. */
12195 elf32_arm_swap_symbol_out (bfd *abfd,
12196 const Elf_Internal_Sym *src,
12200 Elf_Internal_Sym newsym;
12202 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
12203 of the address set, as per the new EABI. We do this unconditionally
12204 because objcopy does not set the elf header flags until after
12205 it writes out the symbol table. */
12206 if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC)
12209 newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
12210 if (newsym.st_shndx != SHN_UNDEF)
12212 /* Do this only for defined symbols. At link type, the static
12213 linker will simulate the work of dynamic linker of resolving
12214 symbols and will carry over the thumbness of found symbols to
12215 the output symbol table. It's not clear how it happens, but
12216 the thumbness of undefined symbols can well be different at
12217 runtime, and writing '1' for them will be confusing for users
12218 and possibly for dynamic linker itself.
12220 newsym.st_value |= 1;
12225 bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
12228 /* Add the PT_ARM_EXIDX program header. */
12231 elf32_arm_modify_segment_map (bfd *abfd,
12232 struct bfd_link_info *info ATTRIBUTE_UNUSED)
12234 struct elf_segment_map *m;
12237 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
12238 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
12240 /* If there is already a PT_ARM_EXIDX header, then we do not
12241 want to add another one. This situation arises when running
12242 "strip"; the input binary already has the header. */
12243 m = elf_tdata (abfd)->segment_map;
12244 while (m && m->p_type != PT_ARM_EXIDX)
12248 m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
12251 m->p_type = PT_ARM_EXIDX;
12253 m->sections[0] = sec;
12255 m->next = elf_tdata (abfd)->segment_map;
12256 elf_tdata (abfd)->segment_map = m;
12263 /* We may add a PT_ARM_EXIDX program header. */
12266 elf32_arm_additional_program_headers (bfd *abfd,
12267 struct bfd_link_info *info ATTRIBUTE_UNUSED)
12271 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
12272 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
12278 /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
12281 elf32_arm_is_function_type (unsigned int type)
12283 return (type == STT_FUNC) || (type == STT_ARM_TFUNC);
12286 /* We use this to override swap_symbol_in and swap_symbol_out. */
12287 const struct elf_size_info elf32_arm_size_info =
12289 sizeof (Elf32_External_Ehdr),
12290 sizeof (Elf32_External_Phdr),
12291 sizeof (Elf32_External_Shdr),
12292 sizeof (Elf32_External_Rel),
12293 sizeof (Elf32_External_Rela),
12294 sizeof (Elf32_External_Sym),
12295 sizeof (Elf32_External_Dyn),
12296 sizeof (Elf_External_Note),
12300 ELFCLASS32, EV_CURRENT,
12301 bfd_elf32_write_out_phdrs,
12302 bfd_elf32_write_shdrs_and_ehdr,
12303 bfd_elf32_checksum_contents,
12304 bfd_elf32_write_relocs,
12305 elf32_arm_swap_symbol_in,
12306 elf32_arm_swap_symbol_out,
12307 bfd_elf32_slurp_reloc_table,
12308 bfd_elf32_slurp_symbol_table,
12309 bfd_elf32_swap_dyn_in,
12310 bfd_elf32_swap_dyn_out,
12311 bfd_elf32_swap_reloc_in,
12312 bfd_elf32_swap_reloc_out,
12313 bfd_elf32_swap_reloca_in,
12314 bfd_elf32_swap_reloca_out
12317 #define ELF_ARCH bfd_arch_arm
12318 #define ELF_MACHINE_CODE EM_ARM
12319 #ifdef __QNXTARGET__
12320 #define ELF_MAXPAGESIZE 0x1000
12322 #define ELF_MAXPAGESIZE 0x8000
12324 #define ELF_MINPAGESIZE 0x1000
12325 #define ELF_COMMONPAGESIZE 0x1000
12327 #define bfd_elf32_mkobject elf32_arm_mkobject
12329 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
12330 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
12331 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
12332 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
12333 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
12334 #define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free
12335 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
12336 #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
12337 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
12338 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
12339 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
12340 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
12341 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
12342 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
12344 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
12345 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
12346 #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
12347 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
12348 #define elf_backend_check_relocs elf32_arm_check_relocs
12349 #define elf_backend_relocate_section elf32_arm_relocate_section
12350 #define elf_backend_write_section elf32_arm_write_section
12351 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
12352 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
12353 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
12354 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
12355 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
12356 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
12357 #define elf_backend_post_process_headers elf32_arm_post_process_headers
12358 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
12359 #define elf_backend_object_p elf32_arm_object_p
12360 #define elf_backend_section_flags elf32_arm_section_flags
12361 #define elf_backend_fake_sections elf32_arm_fake_sections
12362 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
12363 #define elf_backend_final_write_processing elf32_arm_final_write_processing
12364 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
12365 #define elf_backend_symbol_processing elf32_arm_symbol_processing
12366 #define elf_backend_size_info elf32_arm_size_info
12367 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
12368 #define elf_backend_additional_program_headers elf32_arm_additional_program_headers
12369 #define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms
12370 #define elf_backend_begin_write_processing elf32_arm_begin_write_processing
12371 #define elf_backend_is_function_type elf32_arm_is_function_type
12373 #define elf_backend_can_refcount 1
12374 #define elf_backend_can_gc_sections 1
12375 #define elf_backend_plt_readonly 1
12376 #define elf_backend_want_got_plt 1
12377 #define elf_backend_want_plt_sym 0
12378 #define elf_backend_may_use_rel_p 1
12379 #define elf_backend_may_use_rela_p 0
12380 #define elf_backend_default_use_rela_p 0
12382 #define elf_backend_got_header_size 12
12384 #undef elf_backend_obj_attrs_vendor
12385 #define elf_backend_obj_attrs_vendor "aeabi"
12386 #undef elf_backend_obj_attrs_section
12387 #define elf_backend_obj_attrs_section ".ARM.attributes"
12388 #undef elf_backend_obj_attrs_arg_type
12389 #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
12390 #undef elf_backend_obj_attrs_section_type
12391 #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
12392 #define elf_backend_obj_attrs_order elf32_arm_obj_attrs_order
12394 #include "elf32-target.h"
12396 /* VxWorks Targets. */
12398 #undef TARGET_LITTLE_SYM
12399 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
12400 #undef TARGET_LITTLE_NAME
12401 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
12402 #undef TARGET_BIG_SYM
12403 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
12404 #undef TARGET_BIG_NAME
12405 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
12407 /* Like elf32_arm_link_hash_table_create -- but overrides
12408 appropriately for VxWorks. */
12410 static struct bfd_link_hash_table *
12411 elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
12413 struct bfd_link_hash_table *ret;
12415 ret = elf32_arm_link_hash_table_create (abfd);
12418 struct elf32_arm_link_hash_table *htab
12419 = (struct elf32_arm_link_hash_table *) ret;
12421 htab->vxworks_p = 1;
12427 elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
12429 elf32_arm_final_write_processing (abfd, linker);
12430 elf_vxworks_final_write_processing (abfd, linker);
12434 #define elf32_bed elf32_arm_vxworks_bed
12436 #undef bfd_elf32_bfd_link_hash_table_create
12437 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create
12438 #undef elf_backend_add_symbol_hook
12439 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
12440 #undef elf_backend_final_write_processing
12441 #define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing
12442 #undef elf_backend_emit_relocs
12443 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
12445 #undef elf_backend_may_use_rel_p
12446 #define elf_backend_may_use_rel_p 0
12447 #undef elf_backend_may_use_rela_p
12448 #define elf_backend_may_use_rela_p 1
12449 #undef elf_backend_default_use_rela_p
12450 #define elf_backend_default_use_rela_p 1
12451 #undef elf_backend_want_plt_sym
12452 #define elf_backend_want_plt_sym 1
12453 #undef ELF_MAXPAGESIZE
12454 #define ELF_MAXPAGESIZE 0x1000
12456 #include "elf32-target.h"
12459 /* Symbian OS Targets. */
12461 #undef TARGET_LITTLE_SYM
12462 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
12463 #undef TARGET_LITTLE_NAME
12464 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
12465 #undef TARGET_BIG_SYM
12466 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
12467 #undef TARGET_BIG_NAME
12468 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
12470 /* Like elf32_arm_link_hash_table_create -- but overrides
12471 appropriately for Symbian OS. */
12473 static struct bfd_link_hash_table *
12474 elf32_arm_symbian_link_hash_table_create (bfd *abfd)
12476 struct bfd_link_hash_table *ret;
12478 ret = elf32_arm_link_hash_table_create (abfd);
12481 struct elf32_arm_link_hash_table *htab
12482 = (struct elf32_arm_link_hash_table *)ret;
12483 /* There is no PLT header for Symbian OS. */
12484 htab->plt_header_size = 0;
12485 /* The PLT entries are each one instruction and one word. */
12486 htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry);
12487 htab->symbian_p = 1;
12488 /* Symbian uses armv5t or above, so use_blx is always true. */
12490 htab->root.is_relocatable_executable = 1;
12495 static const struct bfd_elf_special_section
12496 elf32_arm_symbian_special_sections[] =
12498 /* In a BPABI executable, the dynamic linking sections do not go in
12499 the loadable read-only segment. The post-linker may wish to
12500 refer to these sections, but they are not part of the final
12502 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 },
12503 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 },
12504 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 },
12505 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 },
12506 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 },
12507 /* These sections do not need to be writable as the SymbianOS
12508 postlinker will arrange things so that no dynamic relocation is
12510 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC },
12511 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC },
12512 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
12513 { NULL, 0, 0, 0, 0 }
12517 elf32_arm_symbian_begin_write_processing (bfd *abfd,
12518 struct bfd_link_info *link_info)
12520 /* BPABI objects are never loaded directly by an OS kernel; they are
12521 processed by a postlinker first, into an OS-specific format. If
12522 the D_PAGED bit is set on the file, BFD will align segments on
12523 page boundaries, so that an OS can directly map the file. With
12524 BPABI objects, that just results in wasted space. In addition,
12525 because we clear the D_PAGED bit, map_sections_to_segments will
12526 recognize that the program headers should not be mapped into any
12527 loadable segment. */
12528 abfd->flags &= ~D_PAGED;
12529 elf32_arm_begin_write_processing (abfd, link_info);
12533 elf32_arm_symbian_modify_segment_map (bfd *abfd,
12534 struct bfd_link_info *info)
12536 struct elf_segment_map *m;
12539 /* BPABI shared libraries and executables should have a PT_DYNAMIC
12540 segment. However, because the .dynamic section is not marked
12541 with SEC_LOAD, the generic ELF code will not create such a
12543 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
12546 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
12547 if (m->p_type == PT_DYNAMIC)
12552 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
12553 m->next = elf_tdata (abfd)->segment_map;
12554 elf_tdata (abfd)->segment_map = m;
12558 /* Also call the generic arm routine. */
12559 return elf32_arm_modify_segment_map (abfd, info);
12562 /* Return address for Ith PLT stub in section PLT, for relocation REL
12563 or (bfd_vma) -1 if it should not be included. */
12566 elf32_arm_symbian_plt_sym_val (bfd_vma i, const asection *plt,
12567 const arelent *rel ATTRIBUTE_UNUSED)
12569 return plt->vma + 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry) * i;
12574 #define elf32_bed elf32_arm_symbian_bed
12576 /* The dynamic sections are not allocated on SymbianOS; the postlinker
12577 will process them and then discard them. */
12578 #undef ELF_DYNAMIC_SEC_FLAGS
12579 #define ELF_DYNAMIC_SEC_FLAGS \
12580 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
12582 #undef elf_backend_add_symbol_hook
12583 #undef elf_backend_emit_relocs
12585 #undef bfd_elf32_bfd_link_hash_table_create
12586 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create
12587 #undef elf_backend_special_sections
12588 #define elf_backend_special_sections elf32_arm_symbian_special_sections
12589 #undef elf_backend_begin_write_processing
12590 #define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing
12591 #undef elf_backend_final_write_processing
12592 #define elf_backend_final_write_processing elf32_arm_final_write_processing
12594 #undef elf_backend_modify_segment_map
12595 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
12597 /* There is no .got section for BPABI objects, and hence no header. */
12598 #undef elf_backend_got_header_size
12599 #define elf_backend_got_header_size 0
12601 /* Similarly, there is no .got.plt section. */
12602 #undef elf_backend_want_got_plt
12603 #define elf_backend_want_got_plt 0
12605 #undef elf_backend_plt_sym_val
12606 #define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val
12608 #undef elf_backend_may_use_rel_p
12609 #define elf_backend_may_use_rel_p 1
12610 #undef elf_backend_may_use_rela_p
12611 #define elf_backend_may_use_rela_p 0
12612 #undef elf_backend_default_use_rela_p
12613 #define elf_backend_default_use_rela_p 0
12614 #undef elf_backend_want_plt_sym
12615 #define elf_backend_want_plt_sym 0
12616 #undef ELF_MAXPAGESIZE
12617 #define ELF_MAXPAGESIZE 0x8000
12619 #include "elf32-target.h"
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