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"
31 #define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0]))
34 /* Return the relocation section associated with NAME. HTAB is the
35 bfd's elf32_arm_link_hash_entry. */
36 #define RELOC_SECTION(HTAB, NAME) \
37 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
39 /* Return size of a relocation entry. HTAB is the bfd's
40 elf32_arm_link_hash_entry. */
41 #define RELOC_SIZE(HTAB) \
43 ? sizeof (Elf32_External_Rel) \
44 : sizeof (Elf32_External_Rela))
46 /* Return function to swap relocations in. HTAB is the bfd's
47 elf32_arm_link_hash_entry. */
48 #define SWAP_RELOC_IN(HTAB) \
50 ? bfd_elf32_swap_reloc_in \
51 : bfd_elf32_swap_reloca_in)
53 /* Return function to swap relocations out. HTAB is the bfd's
54 elf32_arm_link_hash_entry. */
55 #define SWAP_RELOC_OUT(HTAB) \
57 ? bfd_elf32_swap_reloc_out \
58 : bfd_elf32_swap_reloca_out)
60 #define elf_info_to_howto 0
61 #define elf_info_to_howto_rel elf32_arm_info_to_howto
63 #define ARM_ELF_ABI_VERSION 0
64 #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
66 static struct elf_backend_data elf32_arm_vxworks_bed;
68 /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
69 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
72 static reloc_howto_type elf32_arm_howto_table_1[] =
75 HOWTO (R_ARM_NONE, /* type */
77 0, /* size (0 = byte, 1 = short, 2 = long) */
79 FALSE, /* pc_relative */
81 complain_overflow_dont,/* complain_on_overflow */
82 bfd_elf_generic_reloc, /* special_function */
83 "R_ARM_NONE", /* name */
84 FALSE, /* partial_inplace */
87 FALSE), /* pcrel_offset */
89 HOWTO (R_ARM_PC24, /* type */
91 2, /* size (0 = byte, 1 = short, 2 = long) */
93 TRUE, /* pc_relative */
95 complain_overflow_signed,/* complain_on_overflow */
96 bfd_elf_generic_reloc, /* special_function */
97 "R_ARM_PC24", /* name */
98 FALSE, /* partial_inplace */
99 0x00ffffff, /* src_mask */
100 0x00ffffff, /* dst_mask */
101 TRUE), /* pcrel_offset */
103 /* 32 bit absolute */
104 HOWTO (R_ARM_ABS32, /* type */
106 2, /* size (0 = byte, 1 = short, 2 = long) */
108 FALSE, /* pc_relative */
110 complain_overflow_bitfield,/* complain_on_overflow */
111 bfd_elf_generic_reloc, /* special_function */
112 "R_ARM_ABS32", /* name */
113 FALSE, /* partial_inplace */
114 0xffffffff, /* src_mask */
115 0xffffffff, /* dst_mask */
116 FALSE), /* pcrel_offset */
118 /* standard 32bit pc-relative reloc */
119 HOWTO (R_ARM_REL32, /* type */
121 2, /* size (0 = byte, 1 = short, 2 = long) */
123 TRUE, /* pc_relative */
125 complain_overflow_bitfield,/* complain_on_overflow */
126 bfd_elf_generic_reloc, /* special_function */
127 "R_ARM_REL32", /* name */
128 FALSE, /* partial_inplace */
129 0xffffffff, /* src_mask */
130 0xffffffff, /* dst_mask */
131 TRUE), /* pcrel_offset */
133 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
134 HOWTO (R_ARM_LDR_PC_G0, /* type */
136 0, /* size (0 = byte, 1 = short, 2 = long) */
138 TRUE, /* pc_relative */
140 complain_overflow_dont,/* complain_on_overflow */
141 bfd_elf_generic_reloc, /* special_function */
142 "R_ARM_LDR_PC_G0", /* name */
143 FALSE, /* partial_inplace */
144 0xffffffff, /* src_mask */
145 0xffffffff, /* dst_mask */
146 TRUE), /* pcrel_offset */
148 /* 16 bit absolute */
149 HOWTO (R_ARM_ABS16, /* type */
151 1, /* size (0 = byte, 1 = short, 2 = long) */
153 FALSE, /* pc_relative */
155 complain_overflow_bitfield,/* complain_on_overflow */
156 bfd_elf_generic_reloc, /* special_function */
157 "R_ARM_ABS16", /* name */
158 FALSE, /* partial_inplace */
159 0x0000ffff, /* src_mask */
160 0x0000ffff, /* dst_mask */
161 FALSE), /* pcrel_offset */
163 /* 12 bit absolute */
164 HOWTO (R_ARM_ABS12, /* type */
166 2, /* size (0 = byte, 1 = short, 2 = long) */
168 FALSE, /* pc_relative */
170 complain_overflow_bitfield,/* complain_on_overflow */
171 bfd_elf_generic_reloc, /* special_function */
172 "R_ARM_ABS12", /* name */
173 FALSE, /* partial_inplace */
174 0x00000fff, /* src_mask */
175 0x00000fff, /* dst_mask */
176 FALSE), /* pcrel_offset */
178 HOWTO (R_ARM_THM_ABS5, /* type */
180 1, /* size (0 = byte, 1 = short, 2 = long) */
182 FALSE, /* pc_relative */
184 complain_overflow_bitfield,/* complain_on_overflow */
185 bfd_elf_generic_reloc, /* special_function */
186 "R_ARM_THM_ABS5", /* name */
187 FALSE, /* partial_inplace */
188 0x000007e0, /* src_mask */
189 0x000007e0, /* dst_mask */
190 FALSE), /* pcrel_offset */
193 HOWTO (R_ARM_ABS8, /* type */
195 0, /* size (0 = byte, 1 = short, 2 = long) */
197 FALSE, /* pc_relative */
199 complain_overflow_bitfield,/* complain_on_overflow */
200 bfd_elf_generic_reloc, /* special_function */
201 "R_ARM_ABS8", /* name */
202 FALSE, /* partial_inplace */
203 0x000000ff, /* src_mask */
204 0x000000ff, /* dst_mask */
205 FALSE), /* pcrel_offset */
207 HOWTO (R_ARM_SBREL32, /* type */
209 2, /* size (0 = byte, 1 = short, 2 = long) */
211 FALSE, /* pc_relative */
213 complain_overflow_dont,/* complain_on_overflow */
214 bfd_elf_generic_reloc, /* special_function */
215 "R_ARM_SBREL32", /* name */
216 FALSE, /* partial_inplace */
217 0xffffffff, /* src_mask */
218 0xffffffff, /* dst_mask */
219 FALSE), /* pcrel_offset */
221 HOWTO (R_ARM_THM_CALL, /* type */
223 2, /* size (0 = byte, 1 = short, 2 = long) */
225 TRUE, /* pc_relative */
227 complain_overflow_signed,/* complain_on_overflow */
228 bfd_elf_generic_reloc, /* special_function */
229 "R_ARM_THM_CALL", /* name */
230 FALSE, /* partial_inplace */
231 0x07ff07ff, /* src_mask */
232 0x07ff07ff, /* dst_mask */
233 TRUE), /* pcrel_offset */
235 HOWTO (R_ARM_THM_PC8, /* type */
237 1, /* size (0 = byte, 1 = short, 2 = long) */
239 TRUE, /* pc_relative */
241 complain_overflow_signed,/* complain_on_overflow */
242 bfd_elf_generic_reloc, /* special_function */
243 "R_ARM_THM_PC8", /* name */
244 FALSE, /* partial_inplace */
245 0x000000ff, /* src_mask */
246 0x000000ff, /* dst_mask */
247 TRUE), /* pcrel_offset */
249 HOWTO (R_ARM_BREL_ADJ, /* type */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
253 FALSE, /* pc_relative */
255 complain_overflow_signed,/* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
257 "R_ARM_BREL_ADJ", /* name */
258 FALSE, /* partial_inplace */
259 0xffffffff, /* src_mask */
260 0xffffffff, /* dst_mask */
261 FALSE), /* pcrel_offset */
263 HOWTO (R_ARM_SWI24, /* type */
265 0, /* size (0 = byte, 1 = short, 2 = long) */
267 FALSE, /* pc_relative */
269 complain_overflow_signed,/* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_ARM_SWI24", /* name */
272 FALSE, /* partial_inplace */
273 0x00000000, /* src_mask */
274 0x00000000, /* dst_mask */
275 FALSE), /* pcrel_offset */
277 HOWTO (R_ARM_THM_SWI8, /* type */
279 0, /* size (0 = byte, 1 = short, 2 = long) */
281 FALSE, /* pc_relative */
283 complain_overflow_signed,/* complain_on_overflow */
284 bfd_elf_generic_reloc, /* special_function */
285 "R_ARM_SWI8", /* name */
286 FALSE, /* partial_inplace */
287 0x00000000, /* src_mask */
288 0x00000000, /* dst_mask */
289 FALSE), /* pcrel_offset */
291 /* BLX instruction for the ARM. */
292 HOWTO (R_ARM_XPC25, /* type */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
296 TRUE, /* pc_relative */
298 complain_overflow_signed,/* complain_on_overflow */
299 bfd_elf_generic_reloc, /* special_function */
300 "R_ARM_XPC25", /* name */
301 FALSE, /* partial_inplace */
302 0x00ffffff, /* src_mask */
303 0x00ffffff, /* dst_mask */
304 TRUE), /* pcrel_offset */
306 /* BLX instruction for the Thumb. */
307 HOWTO (R_ARM_THM_XPC22, /* type */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
311 TRUE, /* pc_relative */
313 complain_overflow_signed,/* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_ARM_THM_XPC22", /* name */
316 FALSE, /* partial_inplace */
317 0x07ff07ff, /* src_mask */
318 0x07ff07ff, /* dst_mask */
319 TRUE), /* pcrel_offset */
321 /* Dynamic TLS relocations. */
323 HOWTO (R_ARM_TLS_DTPMOD32, /* type */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
327 FALSE, /* pc_relative */
329 complain_overflow_bitfield,/* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_ARM_TLS_DTPMOD32", /* name */
332 TRUE, /* partial_inplace */
333 0xffffffff, /* src_mask */
334 0xffffffff, /* dst_mask */
335 FALSE), /* pcrel_offset */
337 HOWTO (R_ARM_TLS_DTPOFF32, /* type */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
341 FALSE, /* pc_relative */
343 complain_overflow_bitfield,/* complain_on_overflow */
344 bfd_elf_generic_reloc, /* special_function */
345 "R_ARM_TLS_DTPOFF32", /* name */
346 TRUE, /* partial_inplace */
347 0xffffffff, /* src_mask */
348 0xffffffff, /* dst_mask */
349 FALSE), /* pcrel_offset */
351 HOWTO (R_ARM_TLS_TPOFF32, /* type */
353 2, /* size (0 = byte, 1 = short, 2 = long) */
355 FALSE, /* pc_relative */
357 complain_overflow_bitfield,/* complain_on_overflow */
358 bfd_elf_generic_reloc, /* special_function */
359 "R_ARM_TLS_TPOFF32", /* name */
360 TRUE, /* partial_inplace */
361 0xffffffff, /* src_mask */
362 0xffffffff, /* dst_mask */
363 FALSE), /* pcrel_offset */
365 /* Relocs used in ARM Linux */
367 HOWTO (R_ARM_COPY, /* type */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
371 FALSE, /* pc_relative */
373 complain_overflow_bitfield,/* complain_on_overflow */
374 bfd_elf_generic_reloc, /* special_function */
375 "R_ARM_COPY", /* name */
376 TRUE, /* partial_inplace */
377 0xffffffff, /* src_mask */
378 0xffffffff, /* dst_mask */
379 FALSE), /* pcrel_offset */
381 HOWTO (R_ARM_GLOB_DAT, /* type */
383 2, /* size (0 = byte, 1 = short, 2 = long) */
385 FALSE, /* pc_relative */
387 complain_overflow_bitfield,/* complain_on_overflow */
388 bfd_elf_generic_reloc, /* special_function */
389 "R_ARM_GLOB_DAT", /* name */
390 TRUE, /* partial_inplace */
391 0xffffffff, /* src_mask */
392 0xffffffff, /* dst_mask */
393 FALSE), /* pcrel_offset */
395 HOWTO (R_ARM_JUMP_SLOT, /* type */
397 2, /* size (0 = byte, 1 = short, 2 = long) */
399 FALSE, /* pc_relative */
401 complain_overflow_bitfield,/* complain_on_overflow */
402 bfd_elf_generic_reloc, /* special_function */
403 "R_ARM_JUMP_SLOT", /* name */
404 TRUE, /* partial_inplace */
405 0xffffffff, /* src_mask */
406 0xffffffff, /* dst_mask */
407 FALSE), /* pcrel_offset */
409 HOWTO (R_ARM_RELATIVE, /* type */
411 2, /* size (0 = byte, 1 = short, 2 = long) */
413 FALSE, /* pc_relative */
415 complain_overflow_bitfield,/* complain_on_overflow */
416 bfd_elf_generic_reloc, /* special_function */
417 "R_ARM_RELATIVE", /* name */
418 TRUE, /* partial_inplace */
419 0xffffffff, /* src_mask */
420 0xffffffff, /* dst_mask */
421 FALSE), /* pcrel_offset */
423 HOWTO (R_ARM_GOTOFF32, /* type */
425 2, /* size (0 = byte, 1 = short, 2 = long) */
427 FALSE, /* pc_relative */
429 complain_overflow_bitfield,/* complain_on_overflow */
430 bfd_elf_generic_reloc, /* special_function */
431 "R_ARM_GOTOFF32", /* name */
432 TRUE, /* partial_inplace */
433 0xffffffff, /* src_mask */
434 0xffffffff, /* dst_mask */
435 FALSE), /* pcrel_offset */
437 HOWTO (R_ARM_GOTPC, /* type */
439 2, /* size (0 = byte, 1 = short, 2 = long) */
441 TRUE, /* pc_relative */
443 complain_overflow_bitfield,/* complain_on_overflow */
444 bfd_elf_generic_reloc, /* special_function */
445 "R_ARM_GOTPC", /* name */
446 TRUE, /* partial_inplace */
447 0xffffffff, /* src_mask */
448 0xffffffff, /* dst_mask */
449 TRUE), /* pcrel_offset */
451 HOWTO (R_ARM_GOT32, /* type */
453 2, /* size (0 = byte, 1 = short, 2 = long) */
455 FALSE, /* pc_relative */
457 complain_overflow_bitfield,/* complain_on_overflow */
458 bfd_elf_generic_reloc, /* special_function */
459 "R_ARM_GOT32", /* name */
460 TRUE, /* partial_inplace */
461 0xffffffff, /* src_mask */
462 0xffffffff, /* dst_mask */
463 FALSE), /* pcrel_offset */
465 HOWTO (R_ARM_PLT32, /* type */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
469 TRUE, /* pc_relative */
471 complain_overflow_bitfield,/* complain_on_overflow */
472 bfd_elf_generic_reloc, /* special_function */
473 "R_ARM_PLT32", /* name */
474 FALSE, /* partial_inplace */
475 0x00ffffff, /* src_mask */
476 0x00ffffff, /* dst_mask */
477 TRUE), /* pcrel_offset */
479 HOWTO (R_ARM_CALL, /* type */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
483 TRUE, /* pc_relative */
485 complain_overflow_signed,/* complain_on_overflow */
486 bfd_elf_generic_reloc, /* special_function */
487 "R_ARM_CALL", /* name */
488 FALSE, /* partial_inplace */
489 0x00ffffff, /* src_mask */
490 0x00ffffff, /* dst_mask */
491 TRUE), /* pcrel_offset */
493 HOWTO (R_ARM_JUMP24, /* type */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
497 TRUE, /* pc_relative */
499 complain_overflow_signed,/* complain_on_overflow */
500 bfd_elf_generic_reloc, /* special_function */
501 "R_ARM_JUMP24", /* name */
502 FALSE, /* partial_inplace */
503 0x00ffffff, /* src_mask */
504 0x00ffffff, /* dst_mask */
505 TRUE), /* pcrel_offset */
507 HOWTO (R_ARM_THM_JUMP24, /* type */
509 2, /* size (0 = byte, 1 = short, 2 = long) */
511 TRUE, /* pc_relative */
513 complain_overflow_signed,/* complain_on_overflow */
514 bfd_elf_generic_reloc, /* special_function */
515 "R_ARM_THM_JUMP24", /* name */
516 FALSE, /* partial_inplace */
517 0x07ff2fff, /* src_mask */
518 0x07ff2fff, /* dst_mask */
519 TRUE), /* pcrel_offset */
521 HOWTO (R_ARM_BASE_ABS, /* type */
523 2, /* size (0 = byte, 1 = short, 2 = long) */
525 FALSE, /* pc_relative */
527 complain_overflow_dont,/* complain_on_overflow */
528 bfd_elf_generic_reloc, /* special_function */
529 "R_ARM_BASE_ABS", /* name */
530 FALSE, /* partial_inplace */
531 0xffffffff, /* src_mask */
532 0xffffffff, /* dst_mask */
533 FALSE), /* pcrel_offset */
535 HOWTO (R_ARM_ALU_PCREL7_0, /* type */
537 2, /* size (0 = byte, 1 = short, 2 = long) */
539 TRUE, /* pc_relative */
541 complain_overflow_dont,/* complain_on_overflow */
542 bfd_elf_generic_reloc, /* special_function */
543 "R_ARM_ALU_PCREL_7_0", /* name */
544 FALSE, /* partial_inplace */
545 0x00000fff, /* src_mask */
546 0x00000fff, /* dst_mask */
547 TRUE), /* pcrel_offset */
549 HOWTO (R_ARM_ALU_PCREL15_8, /* type */
551 2, /* size (0 = byte, 1 = short, 2 = long) */
553 TRUE, /* pc_relative */
555 complain_overflow_dont,/* complain_on_overflow */
556 bfd_elf_generic_reloc, /* special_function */
557 "R_ARM_ALU_PCREL_15_8",/* name */
558 FALSE, /* partial_inplace */
559 0x00000fff, /* src_mask */
560 0x00000fff, /* dst_mask */
561 TRUE), /* pcrel_offset */
563 HOWTO (R_ARM_ALU_PCREL23_15, /* type */
565 2, /* size (0 = byte, 1 = short, 2 = long) */
567 TRUE, /* pc_relative */
569 complain_overflow_dont,/* complain_on_overflow */
570 bfd_elf_generic_reloc, /* special_function */
571 "R_ARM_ALU_PCREL_23_15",/* name */
572 FALSE, /* partial_inplace */
573 0x00000fff, /* src_mask */
574 0x00000fff, /* dst_mask */
575 TRUE), /* pcrel_offset */
577 HOWTO (R_ARM_LDR_SBREL_11_0, /* type */
579 2, /* size (0 = byte, 1 = short, 2 = long) */
581 FALSE, /* pc_relative */
583 complain_overflow_dont,/* complain_on_overflow */
584 bfd_elf_generic_reloc, /* special_function */
585 "R_ARM_LDR_SBREL_11_0",/* name */
586 FALSE, /* partial_inplace */
587 0x00000fff, /* src_mask */
588 0x00000fff, /* dst_mask */
589 FALSE), /* pcrel_offset */
591 HOWTO (R_ARM_ALU_SBREL_19_12, /* type */
593 2, /* size (0 = byte, 1 = short, 2 = long) */
595 FALSE, /* pc_relative */
597 complain_overflow_dont,/* complain_on_overflow */
598 bfd_elf_generic_reloc, /* special_function */
599 "R_ARM_ALU_SBREL_19_12",/* name */
600 FALSE, /* partial_inplace */
601 0x000ff000, /* src_mask */
602 0x000ff000, /* dst_mask */
603 FALSE), /* pcrel_offset */
605 HOWTO (R_ARM_ALU_SBREL_27_20, /* type */
607 2, /* size (0 = byte, 1 = short, 2 = long) */
609 FALSE, /* pc_relative */
611 complain_overflow_dont,/* complain_on_overflow */
612 bfd_elf_generic_reloc, /* special_function */
613 "R_ARM_ALU_SBREL_27_20",/* name */
614 FALSE, /* partial_inplace */
615 0x0ff00000, /* src_mask */
616 0x0ff00000, /* dst_mask */
617 FALSE), /* pcrel_offset */
619 HOWTO (R_ARM_TARGET1, /* type */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
623 FALSE, /* pc_relative */
625 complain_overflow_dont,/* complain_on_overflow */
626 bfd_elf_generic_reloc, /* special_function */
627 "R_ARM_TARGET1", /* name */
628 FALSE, /* partial_inplace */
629 0xffffffff, /* src_mask */
630 0xffffffff, /* dst_mask */
631 FALSE), /* pcrel_offset */
633 HOWTO (R_ARM_ROSEGREL32, /* type */
635 2, /* size (0 = byte, 1 = short, 2 = long) */
637 FALSE, /* pc_relative */
639 complain_overflow_dont,/* complain_on_overflow */
640 bfd_elf_generic_reloc, /* special_function */
641 "R_ARM_ROSEGREL32", /* name */
642 FALSE, /* partial_inplace */
643 0xffffffff, /* src_mask */
644 0xffffffff, /* dst_mask */
645 FALSE), /* pcrel_offset */
647 HOWTO (R_ARM_V4BX, /* type */
649 2, /* size (0 = byte, 1 = short, 2 = long) */
651 FALSE, /* pc_relative */
653 complain_overflow_dont,/* complain_on_overflow */
654 bfd_elf_generic_reloc, /* special_function */
655 "R_ARM_V4BX", /* name */
656 FALSE, /* partial_inplace */
657 0xffffffff, /* src_mask */
658 0xffffffff, /* dst_mask */
659 FALSE), /* pcrel_offset */
661 HOWTO (R_ARM_TARGET2, /* type */
663 2, /* size (0 = byte, 1 = short, 2 = long) */
665 FALSE, /* pc_relative */
667 complain_overflow_signed,/* complain_on_overflow */
668 bfd_elf_generic_reloc, /* special_function */
669 "R_ARM_TARGET2", /* name */
670 FALSE, /* partial_inplace */
671 0xffffffff, /* src_mask */
672 0xffffffff, /* dst_mask */
673 TRUE), /* pcrel_offset */
675 HOWTO (R_ARM_PREL31, /* type */
677 2, /* size (0 = byte, 1 = short, 2 = long) */
679 TRUE, /* pc_relative */
681 complain_overflow_signed,/* complain_on_overflow */
682 bfd_elf_generic_reloc, /* special_function */
683 "R_ARM_PREL31", /* name */
684 FALSE, /* partial_inplace */
685 0x7fffffff, /* src_mask */
686 0x7fffffff, /* dst_mask */
687 TRUE), /* pcrel_offset */
689 HOWTO (R_ARM_MOVW_ABS_NC, /* type */
691 2, /* size (0 = byte, 1 = short, 2 = long) */
693 FALSE, /* pc_relative */
695 complain_overflow_dont,/* complain_on_overflow */
696 bfd_elf_generic_reloc, /* special_function */
697 "R_ARM_MOVW_ABS_NC", /* name */
698 FALSE, /* partial_inplace */
699 0x000f0fff, /* src_mask */
700 0x000f0fff, /* dst_mask */
701 FALSE), /* pcrel_offset */
703 HOWTO (R_ARM_MOVT_ABS, /* type */
705 2, /* size (0 = byte, 1 = short, 2 = long) */
707 FALSE, /* pc_relative */
709 complain_overflow_bitfield,/* complain_on_overflow */
710 bfd_elf_generic_reloc, /* special_function */
711 "R_ARM_MOVT_ABS", /* name */
712 FALSE, /* partial_inplace */
713 0x000f0fff, /* src_mask */
714 0x000f0fff, /* dst_mask */
715 FALSE), /* pcrel_offset */
717 HOWTO (R_ARM_MOVW_PREL_NC, /* type */
719 2, /* size (0 = byte, 1 = short, 2 = long) */
721 TRUE, /* pc_relative */
723 complain_overflow_dont,/* complain_on_overflow */
724 bfd_elf_generic_reloc, /* special_function */
725 "R_ARM_MOVW_PREL_NC", /* name */
726 FALSE, /* partial_inplace */
727 0x000f0fff, /* src_mask */
728 0x000f0fff, /* dst_mask */
729 TRUE), /* pcrel_offset */
731 HOWTO (R_ARM_MOVT_PREL, /* type */
733 2, /* size (0 = byte, 1 = short, 2 = long) */
735 TRUE, /* pc_relative */
737 complain_overflow_bitfield,/* complain_on_overflow */
738 bfd_elf_generic_reloc, /* special_function */
739 "R_ARM_MOVT_PREL", /* name */
740 FALSE, /* partial_inplace */
741 0x000f0fff, /* src_mask */
742 0x000f0fff, /* dst_mask */
743 TRUE), /* pcrel_offset */
745 HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */
747 2, /* size (0 = byte, 1 = short, 2 = long) */
749 FALSE, /* pc_relative */
751 complain_overflow_dont,/* complain_on_overflow */
752 bfd_elf_generic_reloc, /* special_function */
753 "R_ARM_THM_MOVW_ABS_NC",/* name */
754 FALSE, /* partial_inplace */
755 0x040f70ff, /* src_mask */
756 0x040f70ff, /* dst_mask */
757 FALSE), /* pcrel_offset */
759 HOWTO (R_ARM_THM_MOVT_ABS, /* type */
761 2, /* size (0 = byte, 1 = short, 2 = long) */
763 FALSE, /* pc_relative */
765 complain_overflow_bitfield,/* complain_on_overflow */
766 bfd_elf_generic_reloc, /* special_function */
767 "R_ARM_THM_MOVT_ABS", /* name */
768 FALSE, /* partial_inplace */
769 0x040f70ff, /* src_mask */
770 0x040f70ff, /* dst_mask */
771 FALSE), /* pcrel_offset */
773 HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */
775 2, /* size (0 = byte, 1 = short, 2 = long) */
777 TRUE, /* pc_relative */
779 complain_overflow_dont,/* complain_on_overflow */
780 bfd_elf_generic_reloc, /* special_function */
781 "R_ARM_THM_MOVW_PREL_NC",/* name */
782 FALSE, /* partial_inplace */
783 0x040f70ff, /* src_mask */
784 0x040f70ff, /* dst_mask */
785 TRUE), /* pcrel_offset */
787 HOWTO (R_ARM_THM_MOVT_PREL, /* type */
789 2, /* size (0 = byte, 1 = short, 2 = long) */
791 TRUE, /* pc_relative */
793 complain_overflow_bitfield,/* complain_on_overflow */
794 bfd_elf_generic_reloc, /* special_function */
795 "R_ARM_THM_MOVT_PREL", /* name */
796 FALSE, /* partial_inplace */
797 0x040f70ff, /* src_mask */
798 0x040f70ff, /* dst_mask */
799 TRUE), /* pcrel_offset */
801 HOWTO (R_ARM_THM_JUMP19, /* type */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
805 TRUE, /* pc_relative */
807 complain_overflow_signed,/* complain_on_overflow */
808 bfd_elf_generic_reloc, /* special_function */
809 "R_ARM_THM_JUMP19", /* name */
810 FALSE, /* partial_inplace */
811 0x043f2fff, /* src_mask */
812 0x043f2fff, /* dst_mask */
813 TRUE), /* pcrel_offset */
815 HOWTO (R_ARM_THM_JUMP6, /* type */
817 1, /* size (0 = byte, 1 = short, 2 = long) */
819 TRUE, /* pc_relative */
821 complain_overflow_unsigned,/* complain_on_overflow */
822 bfd_elf_generic_reloc, /* special_function */
823 "R_ARM_THM_JUMP6", /* name */
824 FALSE, /* partial_inplace */
825 0x02f8, /* src_mask */
826 0x02f8, /* dst_mask */
827 TRUE), /* pcrel_offset */
829 /* These are declared as 13-bit signed relocations because we can
830 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
832 HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */
834 2, /* size (0 = byte, 1 = short, 2 = long) */
836 TRUE, /* pc_relative */
838 complain_overflow_dont,/* complain_on_overflow */
839 bfd_elf_generic_reloc, /* special_function */
840 "R_ARM_THM_ALU_PREL_11_0",/* name */
841 FALSE, /* partial_inplace */
842 0xffffffff, /* src_mask */
843 0xffffffff, /* dst_mask */
844 TRUE), /* pcrel_offset */
846 HOWTO (R_ARM_THM_PC12, /* type */
848 2, /* size (0 = byte, 1 = short, 2 = long) */
850 TRUE, /* pc_relative */
852 complain_overflow_dont,/* complain_on_overflow */
853 bfd_elf_generic_reloc, /* special_function */
854 "R_ARM_THM_PC12", /* name */
855 FALSE, /* partial_inplace */
856 0xffffffff, /* src_mask */
857 0xffffffff, /* dst_mask */
858 TRUE), /* pcrel_offset */
860 HOWTO (R_ARM_ABS32_NOI, /* type */
862 2, /* size (0 = byte, 1 = short, 2 = long) */
864 FALSE, /* pc_relative */
866 complain_overflow_dont,/* complain_on_overflow */
867 bfd_elf_generic_reloc, /* special_function */
868 "R_ARM_ABS32_NOI", /* name */
869 FALSE, /* partial_inplace */
870 0xffffffff, /* src_mask */
871 0xffffffff, /* dst_mask */
872 FALSE), /* pcrel_offset */
874 HOWTO (R_ARM_REL32_NOI, /* type */
876 2, /* size (0 = byte, 1 = short, 2 = long) */
878 TRUE, /* pc_relative */
880 complain_overflow_dont,/* complain_on_overflow */
881 bfd_elf_generic_reloc, /* special_function */
882 "R_ARM_REL32_NOI", /* name */
883 FALSE, /* partial_inplace */
884 0xffffffff, /* src_mask */
885 0xffffffff, /* dst_mask */
886 FALSE), /* pcrel_offset */
888 /* Group relocations. */
890 HOWTO (R_ARM_ALU_PC_G0_NC, /* type */
892 2, /* size (0 = byte, 1 = short, 2 = long) */
894 TRUE, /* pc_relative */
896 complain_overflow_dont,/* complain_on_overflow */
897 bfd_elf_generic_reloc, /* special_function */
898 "R_ARM_ALU_PC_G0_NC", /* name */
899 FALSE, /* partial_inplace */
900 0xffffffff, /* src_mask */
901 0xffffffff, /* dst_mask */
902 TRUE), /* pcrel_offset */
904 HOWTO (R_ARM_ALU_PC_G0, /* type */
906 2, /* size (0 = byte, 1 = short, 2 = long) */
908 TRUE, /* pc_relative */
910 complain_overflow_dont,/* complain_on_overflow */
911 bfd_elf_generic_reloc, /* special_function */
912 "R_ARM_ALU_PC_G0", /* name */
913 FALSE, /* partial_inplace */
914 0xffffffff, /* src_mask */
915 0xffffffff, /* dst_mask */
916 TRUE), /* pcrel_offset */
918 HOWTO (R_ARM_ALU_PC_G1_NC, /* type */
920 2, /* size (0 = byte, 1 = short, 2 = long) */
922 TRUE, /* pc_relative */
924 complain_overflow_dont,/* complain_on_overflow */
925 bfd_elf_generic_reloc, /* special_function */
926 "R_ARM_ALU_PC_G1_NC", /* name */
927 FALSE, /* partial_inplace */
928 0xffffffff, /* src_mask */
929 0xffffffff, /* dst_mask */
930 TRUE), /* pcrel_offset */
932 HOWTO (R_ARM_ALU_PC_G1, /* type */
934 2, /* size (0 = byte, 1 = short, 2 = long) */
936 TRUE, /* pc_relative */
938 complain_overflow_dont,/* complain_on_overflow */
939 bfd_elf_generic_reloc, /* special_function */
940 "R_ARM_ALU_PC_G1", /* name */
941 FALSE, /* partial_inplace */
942 0xffffffff, /* src_mask */
943 0xffffffff, /* dst_mask */
944 TRUE), /* pcrel_offset */
946 HOWTO (R_ARM_ALU_PC_G2, /* type */
948 2, /* size (0 = byte, 1 = short, 2 = long) */
950 TRUE, /* pc_relative */
952 complain_overflow_dont,/* complain_on_overflow */
953 bfd_elf_generic_reloc, /* special_function */
954 "R_ARM_ALU_PC_G2", /* name */
955 FALSE, /* partial_inplace */
956 0xffffffff, /* src_mask */
957 0xffffffff, /* dst_mask */
958 TRUE), /* pcrel_offset */
960 HOWTO (R_ARM_LDR_PC_G1, /* type */
962 2, /* size (0 = byte, 1 = short, 2 = long) */
964 TRUE, /* pc_relative */
966 complain_overflow_dont,/* complain_on_overflow */
967 bfd_elf_generic_reloc, /* special_function */
968 "R_ARM_LDR_PC_G1", /* name */
969 FALSE, /* partial_inplace */
970 0xffffffff, /* src_mask */
971 0xffffffff, /* dst_mask */
972 TRUE), /* pcrel_offset */
974 HOWTO (R_ARM_LDR_PC_G2, /* type */
976 2, /* size (0 = byte, 1 = short, 2 = long) */
978 TRUE, /* pc_relative */
980 complain_overflow_dont,/* complain_on_overflow */
981 bfd_elf_generic_reloc, /* special_function */
982 "R_ARM_LDR_PC_G2", /* name */
983 FALSE, /* partial_inplace */
984 0xffffffff, /* src_mask */
985 0xffffffff, /* dst_mask */
986 TRUE), /* pcrel_offset */
988 HOWTO (R_ARM_LDRS_PC_G0, /* type */
990 2, /* size (0 = byte, 1 = short, 2 = long) */
992 TRUE, /* pc_relative */
994 complain_overflow_dont,/* complain_on_overflow */
995 bfd_elf_generic_reloc, /* special_function */
996 "R_ARM_LDRS_PC_G0", /* name */
997 FALSE, /* partial_inplace */
998 0xffffffff, /* src_mask */
999 0xffffffff, /* dst_mask */
1000 TRUE), /* pcrel_offset */
1002 HOWTO (R_ARM_LDRS_PC_G1, /* type */
1004 2, /* size (0 = byte, 1 = short, 2 = long) */
1006 TRUE, /* pc_relative */
1008 complain_overflow_dont,/* complain_on_overflow */
1009 bfd_elf_generic_reloc, /* special_function */
1010 "R_ARM_LDRS_PC_G1", /* name */
1011 FALSE, /* partial_inplace */
1012 0xffffffff, /* src_mask */
1013 0xffffffff, /* dst_mask */
1014 TRUE), /* pcrel_offset */
1016 HOWTO (R_ARM_LDRS_PC_G2, /* type */
1018 2, /* size (0 = byte, 1 = short, 2 = long) */
1020 TRUE, /* pc_relative */
1022 complain_overflow_dont,/* complain_on_overflow */
1023 bfd_elf_generic_reloc, /* special_function */
1024 "R_ARM_LDRS_PC_G2", /* name */
1025 FALSE, /* partial_inplace */
1026 0xffffffff, /* src_mask */
1027 0xffffffff, /* dst_mask */
1028 TRUE), /* pcrel_offset */
1030 HOWTO (R_ARM_LDC_PC_G0, /* type */
1032 2, /* size (0 = byte, 1 = short, 2 = long) */
1034 TRUE, /* pc_relative */
1036 complain_overflow_dont,/* complain_on_overflow */
1037 bfd_elf_generic_reloc, /* special_function */
1038 "R_ARM_LDC_PC_G0", /* name */
1039 FALSE, /* partial_inplace */
1040 0xffffffff, /* src_mask */
1041 0xffffffff, /* dst_mask */
1042 TRUE), /* pcrel_offset */
1044 HOWTO (R_ARM_LDC_PC_G1, /* type */
1046 2, /* size (0 = byte, 1 = short, 2 = long) */
1048 TRUE, /* pc_relative */
1050 complain_overflow_dont,/* complain_on_overflow */
1051 bfd_elf_generic_reloc, /* special_function */
1052 "R_ARM_LDC_PC_G1", /* name */
1053 FALSE, /* partial_inplace */
1054 0xffffffff, /* src_mask */
1055 0xffffffff, /* dst_mask */
1056 TRUE), /* pcrel_offset */
1058 HOWTO (R_ARM_LDC_PC_G2, /* type */
1060 2, /* size (0 = byte, 1 = short, 2 = long) */
1062 TRUE, /* pc_relative */
1064 complain_overflow_dont,/* complain_on_overflow */
1065 bfd_elf_generic_reloc, /* special_function */
1066 "R_ARM_LDC_PC_G2", /* name */
1067 FALSE, /* partial_inplace */
1068 0xffffffff, /* src_mask */
1069 0xffffffff, /* dst_mask */
1070 TRUE), /* pcrel_offset */
1072 HOWTO (R_ARM_ALU_SB_G0_NC, /* type */
1074 2, /* size (0 = byte, 1 = short, 2 = long) */
1076 TRUE, /* pc_relative */
1078 complain_overflow_dont,/* complain_on_overflow */
1079 bfd_elf_generic_reloc, /* special_function */
1080 "R_ARM_ALU_SB_G0_NC", /* name */
1081 FALSE, /* partial_inplace */
1082 0xffffffff, /* src_mask */
1083 0xffffffff, /* dst_mask */
1084 TRUE), /* pcrel_offset */
1086 HOWTO (R_ARM_ALU_SB_G0, /* type */
1088 2, /* size (0 = byte, 1 = short, 2 = long) */
1090 TRUE, /* pc_relative */
1092 complain_overflow_dont,/* complain_on_overflow */
1093 bfd_elf_generic_reloc, /* special_function */
1094 "R_ARM_ALU_SB_G0", /* name */
1095 FALSE, /* partial_inplace */
1096 0xffffffff, /* src_mask */
1097 0xffffffff, /* dst_mask */
1098 TRUE), /* pcrel_offset */
1100 HOWTO (R_ARM_ALU_SB_G1_NC, /* type */
1102 2, /* size (0 = byte, 1 = short, 2 = long) */
1104 TRUE, /* pc_relative */
1106 complain_overflow_dont,/* complain_on_overflow */
1107 bfd_elf_generic_reloc, /* special_function */
1108 "R_ARM_ALU_SB_G1_NC", /* name */
1109 FALSE, /* partial_inplace */
1110 0xffffffff, /* src_mask */
1111 0xffffffff, /* dst_mask */
1112 TRUE), /* pcrel_offset */
1114 HOWTO (R_ARM_ALU_SB_G1, /* type */
1116 2, /* size (0 = byte, 1 = short, 2 = long) */
1118 TRUE, /* pc_relative */
1120 complain_overflow_dont,/* complain_on_overflow */
1121 bfd_elf_generic_reloc, /* special_function */
1122 "R_ARM_ALU_SB_G1", /* name */
1123 FALSE, /* partial_inplace */
1124 0xffffffff, /* src_mask */
1125 0xffffffff, /* dst_mask */
1126 TRUE), /* pcrel_offset */
1128 HOWTO (R_ARM_ALU_SB_G2, /* type */
1130 2, /* size (0 = byte, 1 = short, 2 = long) */
1132 TRUE, /* pc_relative */
1134 complain_overflow_dont,/* complain_on_overflow */
1135 bfd_elf_generic_reloc, /* special_function */
1136 "R_ARM_ALU_SB_G2", /* name */
1137 FALSE, /* partial_inplace */
1138 0xffffffff, /* src_mask */
1139 0xffffffff, /* dst_mask */
1140 TRUE), /* pcrel_offset */
1142 HOWTO (R_ARM_LDR_SB_G0, /* type */
1144 2, /* size (0 = byte, 1 = short, 2 = long) */
1146 TRUE, /* pc_relative */
1148 complain_overflow_dont,/* complain_on_overflow */
1149 bfd_elf_generic_reloc, /* special_function */
1150 "R_ARM_LDR_SB_G0", /* name */
1151 FALSE, /* partial_inplace */
1152 0xffffffff, /* src_mask */
1153 0xffffffff, /* dst_mask */
1154 TRUE), /* pcrel_offset */
1156 HOWTO (R_ARM_LDR_SB_G1, /* type */
1158 2, /* size (0 = byte, 1 = short, 2 = long) */
1160 TRUE, /* pc_relative */
1162 complain_overflow_dont,/* complain_on_overflow */
1163 bfd_elf_generic_reloc, /* special_function */
1164 "R_ARM_LDR_SB_G1", /* name */
1165 FALSE, /* partial_inplace */
1166 0xffffffff, /* src_mask */
1167 0xffffffff, /* dst_mask */
1168 TRUE), /* pcrel_offset */
1170 HOWTO (R_ARM_LDR_SB_G2, /* type */
1172 2, /* size (0 = byte, 1 = short, 2 = long) */
1174 TRUE, /* pc_relative */
1176 complain_overflow_dont,/* complain_on_overflow */
1177 bfd_elf_generic_reloc, /* special_function */
1178 "R_ARM_LDR_SB_G2", /* name */
1179 FALSE, /* partial_inplace */
1180 0xffffffff, /* src_mask */
1181 0xffffffff, /* dst_mask */
1182 TRUE), /* pcrel_offset */
1184 HOWTO (R_ARM_LDRS_SB_G0, /* type */
1186 2, /* size (0 = byte, 1 = short, 2 = long) */
1188 TRUE, /* pc_relative */
1190 complain_overflow_dont,/* complain_on_overflow */
1191 bfd_elf_generic_reloc, /* special_function */
1192 "R_ARM_LDRS_SB_G0", /* name */
1193 FALSE, /* partial_inplace */
1194 0xffffffff, /* src_mask */
1195 0xffffffff, /* dst_mask */
1196 TRUE), /* pcrel_offset */
1198 HOWTO (R_ARM_LDRS_SB_G1, /* type */
1200 2, /* size (0 = byte, 1 = short, 2 = long) */
1202 TRUE, /* pc_relative */
1204 complain_overflow_dont,/* complain_on_overflow */
1205 bfd_elf_generic_reloc, /* special_function */
1206 "R_ARM_LDRS_SB_G1", /* name */
1207 FALSE, /* partial_inplace */
1208 0xffffffff, /* src_mask */
1209 0xffffffff, /* dst_mask */
1210 TRUE), /* pcrel_offset */
1212 HOWTO (R_ARM_LDRS_SB_G2, /* type */
1214 2, /* size (0 = byte, 1 = short, 2 = long) */
1216 TRUE, /* pc_relative */
1218 complain_overflow_dont,/* complain_on_overflow */
1219 bfd_elf_generic_reloc, /* special_function */
1220 "R_ARM_LDRS_SB_G2", /* name */
1221 FALSE, /* partial_inplace */
1222 0xffffffff, /* src_mask */
1223 0xffffffff, /* dst_mask */
1224 TRUE), /* pcrel_offset */
1226 HOWTO (R_ARM_LDC_SB_G0, /* type */
1228 2, /* size (0 = byte, 1 = short, 2 = long) */
1230 TRUE, /* pc_relative */
1232 complain_overflow_dont,/* complain_on_overflow */
1233 bfd_elf_generic_reloc, /* special_function */
1234 "R_ARM_LDC_SB_G0", /* name */
1235 FALSE, /* partial_inplace */
1236 0xffffffff, /* src_mask */
1237 0xffffffff, /* dst_mask */
1238 TRUE), /* pcrel_offset */
1240 HOWTO (R_ARM_LDC_SB_G1, /* type */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1244 TRUE, /* pc_relative */
1246 complain_overflow_dont,/* complain_on_overflow */
1247 bfd_elf_generic_reloc, /* special_function */
1248 "R_ARM_LDC_SB_G1", /* name */
1249 FALSE, /* partial_inplace */
1250 0xffffffff, /* src_mask */
1251 0xffffffff, /* dst_mask */
1252 TRUE), /* pcrel_offset */
1254 HOWTO (R_ARM_LDC_SB_G2, /* type */
1256 2, /* size (0 = byte, 1 = short, 2 = long) */
1258 TRUE, /* pc_relative */
1260 complain_overflow_dont,/* complain_on_overflow */
1261 bfd_elf_generic_reloc, /* special_function */
1262 "R_ARM_LDC_SB_G2", /* name */
1263 FALSE, /* partial_inplace */
1264 0xffffffff, /* src_mask */
1265 0xffffffff, /* dst_mask */
1266 TRUE), /* pcrel_offset */
1268 /* End of group relocations. */
1270 HOWTO (R_ARM_MOVW_BREL_NC, /* type */
1272 2, /* size (0 = byte, 1 = short, 2 = long) */
1274 FALSE, /* pc_relative */
1276 complain_overflow_dont,/* complain_on_overflow */
1277 bfd_elf_generic_reloc, /* special_function */
1278 "R_ARM_MOVW_BREL_NC", /* name */
1279 FALSE, /* partial_inplace */
1280 0x0000ffff, /* src_mask */
1281 0x0000ffff, /* dst_mask */
1282 FALSE), /* pcrel_offset */
1284 HOWTO (R_ARM_MOVT_BREL, /* type */
1286 2, /* size (0 = byte, 1 = short, 2 = long) */
1288 FALSE, /* pc_relative */
1290 complain_overflow_bitfield,/* complain_on_overflow */
1291 bfd_elf_generic_reloc, /* special_function */
1292 "R_ARM_MOVT_BREL", /* name */
1293 FALSE, /* partial_inplace */
1294 0x0000ffff, /* src_mask */
1295 0x0000ffff, /* dst_mask */
1296 FALSE), /* pcrel_offset */
1298 HOWTO (R_ARM_MOVW_BREL, /* type */
1300 2, /* size (0 = byte, 1 = short, 2 = long) */
1302 FALSE, /* pc_relative */
1304 complain_overflow_dont,/* complain_on_overflow */
1305 bfd_elf_generic_reloc, /* special_function */
1306 "R_ARM_MOVW_BREL", /* name */
1307 FALSE, /* partial_inplace */
1308 0x0000ffff, /* src_mask */
1309 0x0000ffff, /* dst_mask */
1310 FALSE), /* pcrel_offset */
1312 HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */
1314 2, /* size (0 = byte, 1 = short, 2 = long) */
1316 FALSE, /* pc_relative */
1318 complain_overflow_dont,/* complain_on_overflow */
1319 bfd_elf_generic_reloc, /* special_function */
1320 "R_ARM_THM_MOVW_BREL_NC",/* name */
1321 FALSE, /* partial_inplace */
1322 0x040f70ff, /* src_mask */
1323 0x040f70ff, /* dst_mask */
1324 FALSE), /* pcrel_offset */
1326 HOWTO (R_ARM_THM_MOVT_BREL, /* type */
1328 2, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE, /* pc_relative */
1332 complain_overflow_bitfield,/* complain_on_overflow */
1333 bfd_elf_generic_reloc, /* special_function */
1334 "R_ARM_THM_MOVT_BREL", /* name */
1335 FALSE, /* partial_inplace */
1336 0x040f70ff, /* src_mask */
1337 0x040f70ff, /* dst_mask */
1338 FALSE), /* pcrel_offset */
1340 HOWTO (R_ARM_THM_MOVW_BREL, /* type */
1342 2, /* size (0 = byte, 1 = short, 2 = long) */
1344 FALSE, /* pc_relative */
1346 complain_overflow_dont,/* complain_on_overflow */
1347 bfd_elf_generic_reloc, /* special_function */
1348 "R_ARM_THM_MOVW_BREL", /* name */
1349 FALSE, /* partial_inplace */
1350 0x040f70ff, /* src_mask */
1351 0x040f70ff, /* dst_mask */
1352 FALSE), /* pcrel_offset */
1354 EMPTY_HOWTO (90), /* unallocated */
1359 HOWTO (R_ARM_PLT32_ABS, /* type */
1361 2, /* size (0 = byte, 1 = short, 2 = long) */
1363 FALSE, /* pc_relative */
1365 complain_overflow_dont,/* complain_on_overflow */
1366 bfd_elf_generic_reloc, /* special_function */
1367 "R_ARM_PLT32_ABS", /* name */
1368 FALSE, /* partial_inplace */
1369 0xffffffff, /* src_mask */
1370 0xffffffff, /* dst_mask */
1371 FALSE), /* pcrel_offset */
1373 HOWTO (R_ARM_GOT_ABS, /* type */
1375 2, /* size (0 = byte, 1 = short, 2 = long) */
1377 FALSE, /* pc_relative */
1379 complain_overflow_dont,/* complain_on_overflow */
1380 bfd_elf_generic_reloc, /* special_function */
1381 "R_ARM_GOT_ABS", /* name */
1382 FALSE, /* partial_inplace */
1383 0xffffffff, /* src_mask */
1384 0xffffffff, /* dst_mask */
1385 FALSE), /* pcrel_offset */
1387 HOWTO (R_ARM_GOT_PREL, /* type */
1389 2, /* size (0 = byte, 1 = short, 2 = long) */
1391 TRUE, /* pc_relative */
1393 complain_overflow_dont, /* complain_on_overflow */
1394 bfd_elf_generic_reloc, /* special_function */
1395 "R_ARM_GOT_PREL", /* name */
1396 FALSE, /* partial_inplace */
1397 0xffffffff, /* src_mask */
1398 0xffffffff, /* dst_mask */
1399 TRUE), /* pcrel_offset */
1401 HOWTO (R_ARM_GOT_BREL12, /* type */
1403 2, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE, /* pc_relative */
1407 complain_overflow_bitfield,/* complain_on_overflow */
1408 bfd_elf_generic_reloc, /* special_function */
1409 "R_ARM_GOT_BREL12", /* name */
1410 FALSE, /* partial_inplace */
1411 0x00000fff, /* src_mask */
1412 0x00000fff, /* dst_mask */
1413 FALSE), /* pcrel_offset */
1415 HOWTO (R_ARM_GOTOFF12, /* type */
1417 2, /* size (0 = byte, 1 = short, 2 = long) */
1419 FALSE, /* pc_relative */
1421 complain_overflow_bitfield,/* complain_on_overflow */
1422 bfd_elf_generic_reloc, /* special_function */
1423 "R_ARM_GOTOFF12", /* name */
1424 FALSE, /* partial_inplace */
1425 0x00000fff, /* src_mask */
1426 0x00000fff, /* dst_mask */
1427 FALSE), /* pcrel_offset */
1429 EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */
1431 /* GNU extension to record C++ vtable member usage */
1432 HOWTO (R_ARM_GNU_VTENTRY, /* type */
1434 2, /* size (0 = byte, 1 = short, 2 = long) */
1436 FALSE, /* pc_relative */
1438 complain_overflow_dont, /* complain_on_overflow */
1439 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1440 "R_ARM_GNU_VTENTRY", /* name */
1441 FALSE, /* partial_inplace */
1444 FALSE), /* pcrel_offset */
1446 /* GNU extension to record C++ vtable hierarchy */
1447 HOWTO (R_ARM_GNU_VTINHERIT, /* type */
1449 2, /* size (0 = byte, 1 = short, 2 = long) */
1451 FALSE, /* pc_relative */
1453 complain_overflow_dont, /* complain_on_overflow */
1454 NULL, /* special_function */
1455 "R_ARM_GNU_VTINHERIT", /* name */
1456 FALSE, /* partial_inplace */
1459 FALSE), /* pcrel_offset */
1461 HOWTO (R_ARM_THM_JUMP11, /* type */
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 TRUE, /* pc_relative */
1467 complain_overflow_signed, /* complain_on_overflow */
1468 bfd_elf_generic_reloc, /* special_function */
1469 "R_ARM_THM_JUMP11", /* name */
1470 FALSE, /* partial_inplace */
1471 0x000007ff, /* src_mask */
1472 0x000007ff, /* dst_mask */
1473 TRUE), /* pcrel_offset */
1475 HOWTO (R_ARM_THM_JUMP8, /* type */
1477 1, /* size (0 = byte, 1 = short, 2 = long) */
1479 TRUE, /* pc_relative */
1481 complain_overflow_signed, /* complain_on_overflow */
1482 bfd_elf_generic_reloc, /* special_function */
1483 "R_ARM_THM_JUMP8", /* name */
1484 FALSE, /* partial_inplace */
1485 0x000000ff, /* src_mask */
1486 0x000000ff, /* dst_mask */
1487 TRUE), /* pcrel_offset */
1489 /* TLS relocations */
1490 HOWTO (R_ARM_TLS_GD32, /* type */
1492 2, /* size (0 = byte, 1 = short, 2 = long) */
1494 FALSE, /* pc_relative */
1496 complain_overflow_bitfield,/* complain_on_overflow */
1497 NULL, /* special_function */
1498 "R_ARM_TLS_GD32", /* name */
1499 TRUE, /* partial_inplace */
1500 0xffffffff, /* src_mask */
1501 0xffffffff, /* dst_mask */
1502 FALSE), /* pcrel_offset */
1504 HOWTO (R_ARM_TLS_LDM32, /* type */
1506 2, /* size (0 = byte, 1 = short, 2 = long) */
1508 FALSE, /* pc_relative */
1510 complain_overflow_bitfield,/* complain_on_overflow */
1511 bfd_elf_generic_reloc, /* special_function */
1512 "R_ARM_TLS_LDM32", /* name */
1513 TRUE, /* partial_inplace */
1514 0xffffffff, /* src_mask */
1515 0xffffffff, /* dst_mask */
1516 FALSE), /* pcrel_offset */
1518 HOWTO (R_ARM_TLS_LDO32, /* type */
1520 2, /* size (0 = byte, 1 = short, 2 = long) */
1522 FALSE, /* pc_relative */
1524 complain_overflow_bitfield,/* complain_on_overflow */
1525 bfd_elf_generic_reloc, /* special_function */
1526 "R_ARM_TLS_LDO32", /* name */
1527 TRUE, /* partial_inplace */
1528 0xffffffff, /* src_mask */
1529 0xffffffff, /* dst_mask */
1530 FALSE), /* pcrel_offset */
1532 HOWTO (R_ARM_TLS_IE32, /* type */
1534 2, /* size (0 = byte, 1 = short, 2 = long) */
1536 FALSE, /* pc_relative */
1538 complain_overflow_bitfield,/* complain_on_overflow */
1539 NULL, /* special_function */
1540 "R_ARM_TLS_IE32", /* name */
1541 TRUE, /* partial_inplace */
1542 0xffffffff, /* src_mask */
1543 0xffffffff, /* dst_mask */
1544 FALSE), /* pcrel_offset */
1546 HOWTO (R_ARM_TLS_LE32, /* type */
1548 2, /* size (0 = byte, 1 = short, 2 = long) */
1550 FALSE, /* pc_relative */
1552 complain_overflow_bitfield,/* complain_on_overflow */
1553 bfd_elf_generic_reloc, /* special_function */
1554 "R_ARM_TLS_LE32", /* name */
1555 TRUE, /* partial_inplace */
1556 0xffffffff, /* src_mask */
1557 0xffffffff, /* dst_mask */
1558 FALSE), /* pcrel_offset */
1560 HOWTO (R_ARM_TLS_LDO12, /* type */
1562 2, /* size (0 = byte, 1 = short, 2 = long) */
1564 FALSE, /* pc_relative */
1566 complain_overflow_bitfield,/* complain_on_overflow */
1567 bfd_elf_generic_reloc, /* special_function */
1568 "R_ARM_TLS_LDO12", /* name */
1569 FALSE, /* partial_inplace */
1570 0x00000fff, /* src_mask */
1571 0x00000fff, /* dst_mask */
1572 FALSE), /* pcrel_offset */
1574 HOWTO (R_ARM_TLS_LE12, /* type */
1576 2, /* size (0 = byte, 1 = short, 2 = long) */
1578 FALSE, /* pc_relative */
1580 complain_overflow_bitfield,/* complain_on_overflow */
1581 bfd_elf_generic_reloc, /* special_function */
1582 "R_ARM_TLS_LE12", /* name */
1583 FALSE, /* partial_inplace */
1584 0x00000fff, /* src_mask */
1585 0x00000fff, /* dst_mask */
1586 FALSE), /* pcrel_offset */
1588 HOWTO (R_ARM_TLS_IE12GP, /* type */
1590 2, /* size (0 = byte, 1 = short, 2 = long) */
1592 FALSE, /* pc_relative */
1594 complain_overflow_bitfield,/* complain_on_overflow */
1595 bfd_elf_generic_reloc, /* special_function */
1596 "R_ARM_TLS_IE12GP", /* name */
1597 FALSE, /* partial_inplace */
1598 0x00000fff, /* src_mask */
1599 0x00000fff, /* dst_mask */
1600 FALSE), /* pcrel_offset */
1603 /* 112-127 private relocations
1604 128 R_ARM_ME_TOO, obsolete
1605 129-255 unallocated in AAELF.
1607 249-255 extended, currently unused, relocations: */
1609 static reloc_howto_type elf32_arm_howto_table_2[4] =
1611 HOWTO (R_ARM_RREL32, /* type */
1613 0, /* size (0 = byte, 1 = short, 2 = long) */
1615 FALSE, /* pc_relative */
1617 complain_overflow_dont,/* complain_on_overflow */
1618 bfd_elf_generic_reloc, /* special_function */
1619 "R_ARM_RREL32", /* name */
1620 FALSE, /* partial_inplace */
1623 FALSE), /* pcrel_offset */
1625 HOWTO (R_ARM_RABS32, /* type */
1627 0, /* size (0 = byte, 1 = short, 2 = long) */
1629 FALSE, /* pc_relative */
1631 complain_overflow_dont,/* complain_on_overflow */
1632 bfd_elf_generic_reloc, /* special_function */
1633 "R_ARM_RABS32", /* name */
1634 FALSE, /* partial_inplace */
1637 FALSE), /* pcrel_offset */
1639 HOWTO (R_ARM_RPC24, /* type */
1641 0, /* size (0 = byte, 1 = short, 2 = long) */
1643 FALSE, /* pc_relative */
1645 complain_overflow_dont,/* complain_on_overflow */
1646 bfd_elf_generic_reloc, /* special_function */
1647 "R_ARM_RPC24", /* name */
1648 FALSE, /* partial_inplace */
1651 FALSE), /* pcrel_offset */
1653 HOWTO (R_ARM_RBASE, /* type */
1655 0, /* size (0 = byte, 1 = short, 2 = long) */
1657 FALSE, /* pc_relative */
1659 complain_overflow_dont,/* complain_on_overflow */
1660 bfd_elf_generic_reloc, /* special_function */
1661 "R_ARM_RBASE", /* name */
1662 FALSE, /* partial_inplace */
1665 FALSE) /* pcrel_offset */
1668 static reloc_howto_type *
1669 elf32_arm_howto_from_type (unsigned int r_type)
1671 if (r_type < NUM_ELEM (elf32_arm_howto_table_1))
1672 return &elf32_arm_howto_table_1[r_type];
1674 if (r_type >= R_ARM_RREL32
1675 && r_type < R_ARM_RREL32 + NUM_ELEM (elf32_arm_howto_table_2))
1676 return &elf32_arm_howto_table_2[r_type - R_ARM_RREL32];
1682 elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
1683 Elf_Internal_Rela * elf_reloc)
1685 unsigned int r_type;
1687 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1688 bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
1691 struct elf32_arm_reloc_map
1693 bfd_reloc_code_real_type bfd_reloc_val;
1694 unsigned char elf_reloc_val;
1697 /* All entries in this list must also be present in elf32_arm_howto_table. */
1698 static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
1700 {BFD_RELOC_NONE, R_ARM_NONE},
1701 {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
1702 {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL},
1703 {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24},
1704 {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
1705 {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
1706 {BFD_RELOC_32, R_ARM_ABS32},
1707 {BFD_RELOC_32_PCREL, R_ARM_REL32},
1708 {BFD_RELOC_8, R_ARM_ABS8},
1709 {BFD_RELOC_16, R_ARM_ABS16},
1710 {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
1711 {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
1712 {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL},
1714 {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11},
1715 {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19},
1716 {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8},
1717 {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6},
1718 {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
1719 {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
1720 {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
1721 {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32},
1722 {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
1723 {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
1724 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1725 {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1},
1726 {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32},
1727 {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32},
1728 {BFD_RELOC_ARM_PREL31, R_ARM_PREL31},
1729 {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2},
1730 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1731 {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32},
1732 {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32},
1733 {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32},
1734 {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32},
1735 {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32},
1736 {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32},
1737 {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32},
1738 {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32},
1739 {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT},
1740 {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY},
1741 {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC},
1742 {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS},
1743 {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC},
1744 {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL},
1745 {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC},
1746 {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS},
1747 {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC},
1748 {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL},
1749 {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC},
1750 {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0},
1751 {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC},
1752 {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1},
1753 {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2},
1754 {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0},
1755 {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1},
1756 {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2},
1757 {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0},
1758 {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1},
1759 {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2},
1760 {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0},
1761 {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1},
1762 {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2},
1763 {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC},
1764 {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0},
1765 {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC},
1766 {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1},
1767 {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2},
1768 {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0},
1769 {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1},
1770 {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2},
1771 {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0},
1772 {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1},
1773 {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2},
1774 {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0},
1775 {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1},
1776 {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2},
1777 {BFD_RELOC_ARM_V4BX, R_ARM_V4BX}
1780 static reloc_howto_type *
1781 elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1782 bfd_reloc_code_real_type code)
1785 for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
1786 if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
1787 return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
1792 static reloc_howto_type *
1793 elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1799 i < (sizeof (elf32_arm_howto_table_1)
1800 / sizeof (elf32_arm_howto_table_1[0]));
1802 if (elf32_arm_howto_table_1[i].name != NULL
1803 && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0)
1804 return &elf32_arm_howto_table_1[i];
1807 i < (sizeof (elf32_arm_howto_table_2)
1808 / sizeof (elf32_arm_howto_table_2[0]));
1810 if (elf32_arm_howto_table_2[i].name != NULL
1811 && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0)
1812 return &elf32_arm_howto_table_2[i];
1817 /* Support for core dump NOTE sections */
1819 elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1824 switch (note->descsz)
1829 case 148: /* Linux/ARM 32-bit*/
1831 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1834 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1843 /* Make a ".reg/999" section. */
1844 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1845 size, note->descpos + offset);
1849 elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1851 switch (note->descsz)
1856 case 124: /* Linux/ARM elf_prpsinfo */
1857 elf_tdata (abfd)->core_program
1858 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1859 elf_tdata (abfd)->core_command
1860 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1863 /* Note that for some reason, a spurious space is tacked
1864 onto the end of the args in some (at least one anyway)
1865 implementations, so strip it off if it exists. */
1868 char *command = elf_tdata (abfd)->core_command;
1869 int n = strlen (command);
1871 if (0 < n && command[n - 1] == ' ')
1872 command[n - 1] = '\0';
1878 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1879 #define TARGET_LITTLE_NAME "elf32-littlearm"
1880 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1881 #define TARGET_BIG_NAME "elf32-bigarm"
1883 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1884 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1886 typedef unsigned long int insn32;
1887 typedef unsigned short int insn16;
1889 /* In lieu of proper flags, assume all EABIv4 or later objects are
1891 #define INTERWORK_FLAG(abfd) \
1892 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1893 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1895 /* The linker script knows the section names for placement.
1896 The entry_names are used to do simple name mangling on the stubs.
1897 Given a function name, and its type, the stub can be found. The
1898 name can be changed. The only requirement is the %s be present. */
1899 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1900 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1902 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1903 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1905 #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1906 #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1908 #define ARM_BX_GLUE_SECTION_NAME ".v4_bx"
1909 #define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d"
1911 /* The name of the dynamic interpreter. This is put in the .interp
1913 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1915 #ifdef FOUR_WORD_PLT
1917 /* The first entry in a procedure linkage table looks like
1918 this. It is set up so that any shared library function that is
1919 called before the relocation has been set up calls the dynamic
1921 static const bfd_vma elf32_arm_plt0_entry [] =
1923 0xe52de004, /* str lr, [sp, #-4]! */
1924 0xe59fe010, /* ldr lr, [pc, #16] */
1925 0xe08fe00e, /* add lr, pc, lr */
1926 0xe5bef008, /* ldr pc, [lr, #8]! */
1929 /* Subsequent entries in a procedure linkage table look like
1931 static const bfd_vma elf32_arm_plt_entry [] =
1933 0xe28fc600, /* add ip, pc, #NN */
1934 0xe28cca00, /* add ip, ip, #NN */
1935 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1936 0x00000000, /* unused */
1941 /* The first entry in a procedure linkage table looks like
1942 this. It is set up so that any shared library function that is
1943 called before the relocation has been set up calls the dynamic
1945 static const bfd_vma elf32_arm_plt0_entry [] =
1947 0xe52de004, /* str lr, [sp, #-4]! */
1948 0xe59fe004, /* ldr lr, [pc, #4] */
1949 0xe08fe00e, /* add lr, pc, lr */
1950 0xe5bef008, /* ldr pc, [lr, #8]! */
1951 0x00000000, /* &GOT[0] - . */
1954 /* Subsequent entries in a procedure linkage table look like
1956 static const bfd_vma elf32_arm_plt_entry [] =
1958 0xe28fc600, /* add ip, pc, #0xNN00000 */
1959 0xe28cca00, /* add ip, ip, #0xNN000 */
1960 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1965 /* The format of the first entry in the procedure linkage table
1966 for a VxWorks executable. */
1967 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] =
1969 0xe52dc008, /* str ip,[sp,#-8]! */
1970 0xe59fc000, /* ldr ip,[pc] */
1971 0xe59cf008, /* ldr pc,[ip,#8] */
1972 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1975 /* The format of subsequent entries in a VxWorks executable. */
1976 static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] =
1978 0xe59fc000, /* ldr ip,[pc] */
1979 0xe59cf000, /* ldr pc,[ip] */
1980 0x00000000, /* .long @got */
1981 0xe59fc000, /* ldr ip,[pc] */
1982 0xea000000, /* b _PLT */
1983 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1986 /* The format of entries in a VxWorks shared library. */
1987 static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] =
1989 0xe59fc000, /* ldr ip,[pc] */
1990 0xe79cf009, /* ldr pc,[ip,r9] */
1991 0x00000000, /* .long @got */
1992 0xe59fc000, /* ldr ip,[pc] */
1993 0xe599f008, /* ldr pc,[r9,#8] */
1994 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1997 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1998 #define PLT_THUMB_STUB_SIZE 4
1999 static const bfd_vma elf32_arm_plt_thumb_stub [] =
2005 /* The entries in a PLT when using a DLL-based target with multiple
2007 static const bfd_vma elf32_arm_symbian_plt_entry [] =
2009 0xe51ff004, /* ldr pc, [pc, #-4] */
2010 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2013 /* Used to build a map of a section. This is required for mixed-endian
2016 typedef struct elf32_elf_section_map
2021 elf32_arm_section_map;
2023 /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2027 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER,
2028 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER,
2029 VFP11_ERRATUM_ARM_VENEER,
2030 VFP11_ERRATUM_THUMB_VENEER
2032 elf32_vfp11_erratum_type;
2034 typedef struct elf32_vfp11_erratum_list
2036 struct elf32_vfp11_erratum_list *next;
2042 struct elf32_vfp11_erratum_list *veneer;
2043 unsigned int vfp_insn;
2047 struct elf32_vfp11_erratum_list *branch;
2051 elf32_vfp11_erratum_type type;
2053 elf32_vfp11_erratum_list;
2055 typedef struct _arm_elf_section_data
2057 struct bfd_elf_section_data elf;
2058 unsigned int mapcount;
2059 unsigned int mapsize;
2060 elf32_arm_section_map *map;
2061 unsigned int erratumcount;
2062 elf32_vfp11_erratum_list *erratumlist;
2064 _arm_elf_section_data;
2066 #define elf32_arm_section_data(sec) \
2067 ((_arm_elf_section_data *) elf_section_data (sec))
2069 /* The size of the thread control block. */
2072 struct elf_arm_obj_tdata
2074 struct elf_obj_tdata root;
2076 /* tls_type for each local got entry. */
2077 char *local_got_tls_type;
2079 /* Zero to warn when linking objects with incompatible enum sizes. */
2080 int no_enum_size_warning;
2083 #define elf_arm_tdata(bfd) \
2084 ((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
2086 #define elf32_arm_local_got_tls_type(bfd) \
2087 (elf_arm_tdata (bfd)->local_got_tls_type)
2089 #define is_arm_elf(bfd) \
2090 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2091 && elf_tdata (bfd) != NULL \
2092 && elf_object_id (bfd) == ARM_ELF_TDATA)
2095 elf32_arm_mkobject (bfd *abfd)
2097 return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata),
2101 /* The ARM linker needs to keep track of the number of relocs that it
2102 decides to copy in check_relocs for each symbol. This is so that
2103 it can discard PC relative relocs if it doesn't need them when
2104 linking with -Bsymbolic. We store the information in a field
2105 extending the regular ELF linker hash table. */
2107 /* This structure keeps track of the number of relocs we have copied
2108 for a given symbol. */
2109 struct elf32_arm_relocs_copied
2112 struct elf32_arm_relocs_copied * next;
2113 /* A section in dynobj. */
2115 /* Number of relocs copied in this section. */
2116 bfd_size_type count;
2117 /* Number of PC-relative relocs copied in this section. */
2118 bfd_size_type pc_count;
2121 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2123 /* Arm ELF linker hash entry. */
2124 struct elf32_arm_link_hash_entry
2126 struct elf_link_hash_entry root;
2128 /* Number of PC relative relocs copied for this symbol. */
2129 struct elf32_arm_relocs_copied * relocs_copied;
2131 /* We reference count Thumb references to a PLT entry separately,
2132 so that we can emit the Thumb trampoline only if needed. */
2133 bfd_signed_vma plt_thumb_refcount;
2135 /* Some references from Thumb code may be eliminated by BL->BLX
2136 conversion, so record them separately. */
2137 bfd_signed_vma plt_maybe_thumb_refcount;
2139 /* Since PLT entries have variable size if the Thumb prologue is
2140 used, we need to record the index into .got.plt instead of
2141 recomputing it from the PLT offset. */
2142 bfd_signed_vma plt_got_offset;
2144 #define GOT_UNKNOWN 0
2145 #define GOT_NORMAL 1
2146 #define GOT_TLS_GD 2
2147 #define GOT_TLS_IE 4
2148 unsigned char tls_type;
2150 /* The symbol marking the real symbol location for exported thumb
2151 symbols with Arm stubs. */
2152 struct elf_link_hash_entry *export_glue;
2155 /* Traverse an arm ELF linker hash table. */
2156 #define elf32_arm_link_hash_traverse(table, func, info) \
2157 (elf_link_hash_traverse \
2159 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2162 /* Get the ARM elf linker hash table from a link_info structure. */
2163 #define elf32_arm_hash_table(info) \
2164 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2166 /* ARM ELF linker hash table. */
2167 struct elf32_arm_link_hash_table
2169 /* The main hash table. */
2170 struct elf_link_hash_table root;
2172 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2173 bfd_size_type thumb_glue_size;
2175 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2176 bfd_size_type arm_glue_size;
2178 /* The size in bytes of section containing the ARMv4 BX veneers. */
2179 bfd_size_type bx_glue_size;
2181 /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when
2182 veneer has been populated. */
2183 bfd_vma bx_glue_offset[15];
2185 /* The size in bytes of the section containing glue for VFP11 erratum
2187 bfd_size_type vfp11_erratum_glue_size;
2189 /* An arbitrary input BFD chosen to hold the glue sections. */
2190 bfd * bfd_of_glue_owner;
2192 /* Nonzero to output a BE8 image. */
2195 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2196 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2199 /* The relocation to use for R_ARM_TARGET2 relocations. */
2202 /* 0 = Ignore R_ARM_V4BX.
2203 1 = Convert BX to MOV PC.
2204 2 = Generate v4 interworing stubs. */
2207 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2210 /* What sort of code sequences we should look for which may trigger the
2211 VFP11 denorm erratum. */
2212 bfd_arm_vfp11_fix vfp11_fix;
2214 /* Global counter for the number of fixes we have emitted. */
2215 int num_vfp11_fixes;
2217 /* Nonzero to force PIC branch veneers. */
2220 /* The number of bytes in the initial entry in the PLT. */
2221 bfd_size_type plt_header_size;
2223 /* The number of bytes in the subsequent PLT etries. */
2224 bfd_size_type plt_entry_size;
2226 /* True if the target system is VxWorks. */
2229 /* True if the target system is Symbian OS. */
2232 /* True if the target uses REL relocations. */
2235 /* Short-cuts to get to dynamic linker sections. */
2244 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2247 /* Data for R_ARM_TLS_LDM32 relocations. */
2249 bfd_signed_vma refcount;
2253 /* Small local sym to section mapping cache. */
2254 struct sym_sec_cache sym_sec;
2256 /* For convenience in allocate_dynrelocs. */
2260 /* Create an entry in an ARM ELF linker hash table. */
2262 static struct bfd_hash_entry *
2263 elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
2264 struct bfd_hash_table * table,
2265 const char * string)
2267 struct elf32_arm_link_hash_entry * ret =
2268 (struct elf32_arm_link_hash_entry *) entry;
2270 /* Allocate the structure if it has not already been allocated by a
2272 if (ret == (struct elf32_arm_link_hash_entry *) NULL)
2273 ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
2275 return (struct bfd_hash_entry *) ret;
2277 /* Call the allocation method of the superclass. */
2278 ret = ((struct elf32_arm_link_hash_entry *)
2279 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2283 ret->relocs_copied = NULL;
2284 ret->tls_type = GOT_UNKNOWN;
2285 ret->plt_thumb_refcount = 0;
2286 ret->plt_maybe_thumb_refcount = 0;
2287 ret->plt_got_offset = -1;
2288 ret->export_glue = NULL;
2291 return (struct bfd_hash_entry *) ret;
2294 /* Return true if NAME is the name of the relocation section associated
2298 reloc_section_p (struct elf32_arm_link_hash_table *htab,
2299 const char *name, asection *s)
2302 return CONST_STRNEQ (name, ".rel") && strcmp (s->name, name + 4) == 0;
2304 return CONST_STRNEQ (name, ".rela") && strcmp (s->name, name + 5) == 0;
2307 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2308 shortcuts to them in our hash table. */
2311 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2313 struct elf32_arm_link_hash_table *htab;
2315 htab = elf32_arm_hash_table (info);
2316 /* BPABI objects never have a GOT, or associated sections. */
2317 if (htab->symbian_p)
2320 if (! _bfd_elf_create_got_section (dynobj, info))
2323 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2324 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2325 if (!htab->sgot || !htab->sgotplt)
2328 htab->srelgot = bfd_make_section_with_flags (dynobj,
2329 RELOC_SECTION (htab, ".got"),
2330 (SEC_ALLOC | SEC_LOAD
2333 | SEC_LINKER_CREATED
2335 if (htab->srelgot == NULL
2336 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
2341 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2342 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2346 elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
2348 struct elf32_arm_link_hash_table *htab;
2350 htab = elf32_arm_hash_table (info);
2351 if (!htab->sgot && !create_got_section (dynobj, info))
2354 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2357 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
2358 htab->srelplt = bfd_get_section_by_name (dynobj,
2359 RELOC_SECTION (htab, ".plt"));
2360 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2362 htab->srelbss = bfd_get_section_by_name (dynobj,
2363 RELOC_SECTION (htab, ".bss"));
2365 if (htab->vxworks_p)
2367 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
2372 htab->plt_header_size = 0;
2373 htab->plt_entry_size
2374 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry);
2378 htab->plt_header_size
2379 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry);
2380 htab->plt_entry_size
2381 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry);
2388 || (!info->shared && !htab->srelbss))
2394 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2397 elf32_arm_copy_indirect_symbol (struct bfd_link_info *info,
2398 struct elf_link_hash_entry *dir,
2399 struct elf_link_hash_entry *ind)
2401 struct elf32_arm_link_hash_entry *edir, *eind;
2403 edir = (struct elf32_arm_link_hash_entry *) dir;
2404 eind = (struct elf32_arm_link_hash_entry *) ind;
2406 if (eind->relocs_copied != NULL)
2408 if (edir->relocs_copied != NULL)
2410 struct elf32_arm_relocs_copied **pp;
2411 struct elf32_arm_relocs_copied *p;
2413 /* Add reloc counts against the indirect sym to the direct sym
2414 list. Merge any entries against the same section. */
2415 for (pp = &eind->relocs_copied; (p = *pp) != NULL; )
2417 struct elf32_arm_relocs_copied *q;
2419 for (q = edir->relocs_copied; q != NULL; q = q->next)
2420 if (q->section == p->section)
2422 q->pc_count += p->pc_count;
2423 q->count += p->count;
2430 *pp = edir->relocs_copied;
2433 edir->relocs_copied = eind->relocs_copied;
2434 eind->relocs_copied = NULL;
2437 if (ind->root.type == bfd_link_hash_indirect)
2439 /* Copy over PLT info. */
2440 edir->plt_thumb_refcount += eind->plt_thumb_refcount;
2441 eind->plt_thumb_refcount = 0;
2442 edir->plt_maybe_thumb_refcount += eind->plt_maybe_thumb_refcount;
2443 eind->plt_maybe_thumb_refcount = 0;
2445 if (dir->got.refcount <= 0)
2447 edir->tls_type = eind->tls_type;
2448 eind->tls_type = GOT_UNKNOWN;
2452 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2455 /* Create an ARM elf linker hash table. */
2457 static struct bfd_link_hash_table *
2458 elf32_arm_link_hash_table_create (bfd *abfd)
2460 struct elf32_arm_link_hash_table *ret;
2461 bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
2463 ret = bfd_malloc (amt);
2467 if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
2468 elf32_arm_link_hash_newfunc,
2469 sizeof (struct elf32_arm_link_hash_entry)))
2476 ret->sgotplt = NULL;
2477 ret->srelgot = NULL;
2479 ret->srelplt = NULL;
2480 ret->sdynbss = NULL;
2481 ret->srelbss = NULL;
2482 ret->srelplt2 = NULL;
2483 ret->thumb_glue_size = 0;
2484 ret->arm_glue_size = 0;
2485 ret->bx_glue_size = 0;
2486 memset (ret->bx_glue_offset, 0, sizeof(ret->bx_glue_offset));
2487 ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
2488 ret->vfp11_erratum_glue_size = 0;
2489 ret->num_vfp11_fixes = 0;
2490 ret->bfd_of_glue_owner = NULL;
2491 ret->byteswap_code = 0;
2492 ret->target1_is_rel = 0;
2493 ret->target2_reloc = R_ARM_NONE;
2494 #ifdef FOUR_WORD_PLT
2495 ret->plt_header_size = 16;
2496 ret->plt_entry_size = 16;
2498 ret->plt_header_size = 20;
2499 ret->plt_entry_size = 12;
2506 ret->sym_sec.abfd = NULL;
2508 ret->tls_ldm_got.refcount = 0;
2510 return &ret->root.root;
2513 /* Locate the Thumb encoded calling stub for NAME. */
2515 static struct elf_link_hash_entry *
2516 find_thumb_glue (struct bfd_link_info *link_info,
2518 char **error_message)
2521 struct elf_link_hash_entry *hash;
2522 struct elf32_arm_link_hash_table *hash_table;
2524 /* We need a pointer to the armelf specific hash table. */
2525 hash_table = elf32_arm_hash_table (link_info);
2527 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2528 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
2530 BFD_ASSERT (tmp_name);
2532 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
2534 hash = elf_link_hash_lookup
2535 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
2538 && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"),
2539 tmp_name, name) == -1)
2540 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
2547 /* Locate the ARM encoded calling stub for NAME. */
2549 static struct elf_link_hash_entry *
2550 find_arm_glue (struct bfd_link_info *link_info,
2552 char **error_message)
2555 struct elf_link_hash_entry *myh;
2556 struct elf32_arm_link_hash_table *hash_table;
2558 /* We need a pointer to the elfarm specific hash table. */
2559 hash_table = elf32_arm_hash_table (link_info);
2561 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2562 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
2564 BFD_ASSERT (tmp_name);
2566 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
2568 myh = elf_link_hash_lookup
2569 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
2572 && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"),
2573 tmp_name, name) == -1)
2574 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
2581 /* ARM->Thumb glue (static images):
2585 ldr r12, __func_addr
2588 .word func @ behave as if you saw a ARM_32 reloc.
2595 .word func @ behave as if you saw a ARM_32 reloc.
2597 (relocatable images)
2600 ldr r12, __func_offset
2607 #define ARM2THUMB_STATIC_GLUE_SIZE 12
2608 static const insn32 a2t1_ldr_insn = 0xe59fc000;
2609 static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
2610 static const insn32 a2t3_func_addr_insn = 0x00000001;
2612 #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
2613 static const insn32 a2t1v5_ldr_insn = 0xe51ff004;
2614 static const insn32 a2t2v5_func_addr_insn = 0x00000001;
2616 #define ARM2THUMB_PIC_GLUE_SIZE 16
2617 static const insn32 a2t1p_ldr_insn = 0xe59fc004;
2618 static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
2619 static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
2621 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
2625 __func_from_thumb: __func_from_thumb:
2627 nop ldr r6, __func_addr
2629 __func_change_to_arm: bx r6
2631 __func_back_to_thumb:
2637 #define THUMB2ARM_GLUE_SIZE 8
2638 static const insn16 t2a1_bx_pc_insn = 0x4778;
2639 static const insn16 t2a2_noop_insn = 0x46c0;
2640 static const insn32 t2a3_b_insn = 0xea000000;
2642 #define VFP11_ERRATUM_VENEER_SIZE 8
2644 #define ARM_BX_VENEER_SIZE 12
2645 static const insn32 armbx1_tst_insn = 0xe3100001;
2646 static const insn32 armbx2_moveq_insn = 0x01a0f000;
2647 static const insn32 armbx3_bx_insn = 0xe12fff10;
2649 #ifndef ELFARM_NABI_C_INCLUDED
2651 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
2655 struct elf32_arm_link_hash_table * globals;
2657 globals = elf32_arm_hash_table (info);
2659 BFD_ASSERT (globals != NULL);
2661 if (globals->arm_glue_size != 0)
2663 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2665 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
2666 ARM2THUMB_GLUE_SECTION_NAME);
2668 BFD_ASSERT (s != NULL);
2670 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size);
2672 BFD_ASSERT (s->size == globals->arm_glue_size);
2676 if (globals->thumb_glue_size != 0)
2678 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2680 s = bfd_get_section_by_name
2681 (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
2683 BFD_ASSERT (s != NULL);
2685 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size);
2687 BFD_ASSERT (s->size == globals->thumb_glue_size);
2691 if (globals->vfp11_erratum_glue_size != 0)
2693 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2695 s = bfd_get_section_by_name
2696 (globals->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
2698 BFD_ASSERT (s != NULL);
2700 foo = bfd_alloc (globals->bfd_of_glue_owner,
2701 globals->vfp11_erratum_glue_size);
2703 BFD_ASSERT (s->size == globals->vfp11_erratum_glue_size);
2707 if (globals->bx_glue_size != 0)
2709 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2711 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
2712 ARM_BX_GLUE_SECTION_NAME);
2714 BFD_ASSERT (s != NULL);
2716 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->bx_glue_size);
2718 BFD_ASSERT (s->size == globals->bx_glue_size);
2725 /* Allocate space and symbols for calling a Thumb function from Arm mode.
2726 returns the symbol identifying teh stub. */
2727 static struct elf_link_hash_entry *
2728 record_arm_to_thumb_glue (struct bfd_link_info * link_info,
2729 struct elf_link_hash_entry * h)
2731 const char * name = h->root.root.string;
2734 struct elf_link_hash_entry * myh;
2735 struct bfd_link_hash_entry * bh;
2736 struct elf32_arm_link_hash_table * globals;
2740 globals = elf32_arm_hash_table (link_info);
2742 BFD_ASSERT (globals != NULL);
2743 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2745 s = bfd_get_section_by_name
2746 (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
2748 BFD_ASSERT (s != NULL);
2750 tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
2752 BFD_ASSERT (tmp_name);
2754 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
2756 myh = elf_link_hash_lookup
2757 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
2761 /* We've already seen this guy. */
2766 /* The only trick here is using hash_table->arm_glue_size as the value.
2767 Even though the section isn't allocated yet, this is where we will be
2770 val = globals->arm_glue_size + 1;
2771 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
2772 tmp_name, BSF_GLOBAL, s, val,
2773 NULL, TRUE, FALSE, &bh);
2775 myh = (struct elf_link_hash_entry *) bh;
2776 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
2777 myh->forced_local = 1;
2781 if (link_info->shared || globals->root.is_relocatable_executable
2782 || globals->pic_veneer)
2783 size = ARM2THUMB_PIC_GLUE_SIZE;
2784 else if (globals->use_blx)
2785 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
2787 size = ARM2THUMB_STATIC_GLUE_SIZE;
2790 globals->arm_glue_size += size;
2796 record_thumb_to_arm_glue (struct bfd_link_info *link_info,
2797 struct elf_link_hash_entry *h)
2799 const char *name = h->root.root.string;
2802 struct elf_link_hash_entry *myh;
2803 struct bfd_link_hash_entry *bh;
2804 struct elf32_arm_link_hash_table *hash_table;
2807 hash_table = elf32_arm_hash_table (link_info);
2809 BFD_ASSERT (hash_table != NULL);
2810 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
2812 s = bfd_get_section_by_name
2813 (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
2815 BFD_ASSERT (s != NULL);
2817 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2818 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
2820 BFD_ASSERT (tmp_name);
2822 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
2824 myh = elf_link_hash_lookup
2825 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
2829 /* We've already seen this guy. */
2835 val = hash_table->thumb_glue_size + 1;
2836 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2837 tmp_name, BSF_GLOBAL, s, val,
2838 NULL, TRUE, FALSE, &bh);
2840 /* If we mark it 'Thumb', the disassembler will do a better job. */
2841 myh = (struct elf_link_hash_entry *) bh;
2842 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
2843 myh->forced_local = 1;
2847 #define CHANGE_TO_ARM "__%s_change_to_arm"
2848 #define BACK_FROM_ARM "__%s_back_from_arm"
2850 /* Allocate another symbol to mark where we switch to Arm mode. */
2851 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2852 + strlen (CHANGE_TO_ARM) + 1);
2854 BFD_ASSERT (tmp_name);
2856 sprintf (tmp_name, CHANGE_TO_ARM, name);
2859 val = hash_table->thumb_glue_size + 4,
2860 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2861 tmp_name, BSF_LOCAL, s, val,
2862 NULL, TRUE, FALSE, &bh);
2866 s->size += THUMB2ARM_GLUE_SIZE;
2867 hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
2873 /* Allocate space for ARMv4 BX veneers. */
2876 record_arm_bx_glue (struct bfd_link_info * link_info, int reg)
2879 struct elf32_arm_link_hash_table *globals;
2881 struct elf_link_hash_entry *myh;
2882 struct bfd_link_hash_entry *bh;
2885 /* BX PC does not need a veneer. */
2889 globals = elf32_arm_hash_table (link_info);
2891 BFD_ASSERT (globals != NULL);
2892 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2894 /* Check if this veneer has already been allocated. */
2895 if (globals->bx_glue_offset[reg])
2898 s = bfd_get_section_by_name
2899 (globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME);
2901 BFD_ASSERT (s != NULL);
2903 /* Add symbol for veneer. */
2904 tmp_name = bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1);
2906 BFD_ASSERT (tmp_name);
2908 sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg);
2910 myh = elf_link_hash_lookup
2911 (&(globals)->root, tmp_name, FALSE, FALSE, FALSE);
2913 BFD_ASSERT (myh == NULL);
2916 val = globals->bx_glue_size;
2917 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
2918 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
2919 NULL, TRUE, FALSE, &bh);
2921 myh = (struct elf_link_hash_entry *) bh;
2922 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
2923 myh->forced_local = 1;
2925 s->size += ARM_BX_VENEER_SIZE;
2926 globals->bx_glue_offset[reg] = globals->bx_glue_size | 2;
2927 globals->bx_glue_size += ARM_BX_VENEER_SIZE;
2931 /* Add an entry to the code/data map for section SEC. */
2934 elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma)
2936 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
2937 unsigned int newidx;
2939 if (sec_data->map == NULL)
2941 sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map));
2942 sec_data->mapcount = 0;
2943 sec_data->mapsize = 1;
2946 newidx = sec_data->mapcount++;
2948 if (sec_data->mapcount > sec_data->mapsize)
2950 sec_data->mapsize *= 2;
2951 sec_data->map = bfd_realloc_or_free (sec_data->map, sec_data->mapsize
2952 * sizeof (elf32_arm_section_map));
2957 sec_data->map[newidx].vma = vma;
2958 sec_data->map[newidx].type = type;
2963 /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
2964 veneers are handled for now. */
2967 record_vfp11_erratum_veneer (struct bfd_link_info *link_info,
2968 elf32_vfp11_erratum_list *branch,
2970 asection *branch_sec,
2971 unsigned int offset)
2974 struct elf32_arm_link_hash_table *hash_table;
2976 struct elf_link_hash_entry *myh;
2977 struct bfd_link_hash_entry *bh;
2979 struct _arm_elf_section_data *sec_data;
2981 elf32_vfp11_erratum_list *newerr;
2983 hash_table = elf32_arm_hash_table (link_info);
2985 BFD_ASSERT (hash_table != NULL);
2986 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
2988 s = bfd_get_section_by_name
2989 (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
2991 sec_data = elf32_arm_section_data (s);
2993 BFD_ASSERT (s != NULL);
2995 tmp_name = bfd_malloc ((bfd_size_type) strlen
2996 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
2998 BFD_ASSERT (tmp_name);
3000 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
3001 hash_table->num_vfp11_fixes);
3003 myh = elf_link_hash_lookup
3004 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
3006 BFD_ASSERT (myh == NULL);
3009 val = hash_table->vfp11_erratum_glue_size;
3010 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
3011 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
3012 NULL, TRUE, FALSE, &bh);
3014 myh = (struct elf_link_hash_entry *) bh;
3015 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
3016 myh->forced_local = 1;
3018 /* Link veneer back to calling location. */
3019 errcount = ++(sec_data->erratumcount);
3020 newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
3022 newerr->type = VFP11_ERRATUM_ARM_VENEER;
3024 newerr->u.v.branch = branch;
3025 newerr->u.v.id = hash_table->num_vfp11_fixes;
3026 branch->u.b.veneer = newerr;
3028 newerr->next = sec_data->erratumlist;
3029 sec_data->erratumlist = newerr;
3031 /* A symbol for the return from the veneer. */
3032 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
3033 hash_table->num_vfp11_fixes);
3035 myh = elf_link_hash_lookup
3036 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
3043 _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL,
3044 branch_sec, val, NULL, TRUE, FALSE, &bh);
3046 myh = (struct elf_link_hash_entry *) bh;
3047 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
3048 myh->forced_local = 1;
3052 /* Generate a mapping symbol for the veneer section, and explicitly add an
3053 entry for that symbol to the code/data map for the section. */
3054 if (hash_table->vfp11_erratum_glue_size == 0)
3057 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
3058 ever requires this erratum fix. */
3059 _bfd_generic_link_add_one_symbol (link_info,
3060 hash_table->bfd_of_glue_owner, "$a",
3061 BSF_LOCAL, s, 0, NULL,
3064 myh = (struct elf_link_hash_entry *) bh;
3065 myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
3066 myh->forced_local = 1;
3068 /* The elf32_arm_init_maps function only cares about symbols from input
3069 BFDs. We must make a note of this generated mapping symbol
3070 ourselves so that code byteswapping works properly in
3071 elf32_arm_write_section. */
3072 elf32_arm_section_map_add (s, 'a', 0);
3075 s->size += VFP11_ERRATUM_VENEER_SIZE;
3076 hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE;
3077 hash_table->num_vfp11_fixes++;
3079 /* The offset of the veneer. */
3083 /* Add the glue sections to ABFD. This function is called from the
3084 linker scripts in ld/emultempl/{armelf}.em. */
3087 bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
3088 struct bfd_link_info *info)
3093 /* If we are only performing a partial
3094 link do not bother adding the glue. */
3095 if (info->relocatable)
3098 sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME);
3102 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
3103 will prevent elf_link_input_bfd() from processing the contents
3105 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3106 | SEC_CODE | SEC_READONLY);
3108 sec = bfd_make_section_with_flags (abfd,
3109 ARM2THUMB_GLUE_SECTION_NAME,
3113 || !bfd_set_section_alignment (abfd, sec, 2))
3116 /* Set the gc mark to prevent the section from being removed by garbage
3117 collection, despite the fact that no relocs refer to this section. */
3121 sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME);
3125 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3126 | SEC_CODE | SEC_READONLY);
3128 sec = bfd_make_section_with_flags (abfd,
3129 THUMB2ARM_GLUE_SECTION_NAME,
3133 || !bfd_set_section_alignment (abfd, sec, 2))
3139 sec = bfd_get_section_by_name (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME);
3143 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3144 | SEC_CODE | SEC_READONLY);
3146 sec = bfd_make_section_with_flags (abfd,
3147 VFP11_ERRATUM_VENEER_SECTION_NAME,
3151 || !bfd_set_section_alignment (abfd, sec, 2))
3157 sec = bfd_get_section_by_name (abfd, ARM_BX_GLUE_SECTION_NAME);
3161 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3162 | SEC_CODE | SEC_READONLY);
3164 sec = bfd_make_section_with_flags (abfd,
3165 ARM_BX_GLUE_SECTION_NAME,
3169 || !bfd_set_section_alignment (abfd, sec, 2))
3178 /* Select a BFD to be used to hold the sections used by the glue code.
3179 This function is called from the linker scripts in ld/emultempl/
3183 bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
3185 struct elf32_arm_link_hash_table *globals;
3187 /* If we are only performing a partial link
3188 do not bother getting a bfd to hold the glue. */
3189 if (info->relocatable)
3192 /* Make sure we don't attach the glue sections to a dynamic object. */
3193 BFD_ASSERT (!(abfd->flags & DYNAMIC));
3195 globals = elf32_arm_hash_table (info);
3197 BFD_ASSERT (globals != NULL);
3199 if (globals->bfd_of_glue_owner != NULL)
3202 /* Save the bfd for later use. */
3203 globals->bfd_of_glue_owner = abfd;
3208 static void check_use_blx(struct elf32_arm_link_hash_table *globals)
3210 if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
3212 globals->use_blx = 1;
3216 bfd_elf32_arm_process_before_allocation (bfd *abfd,
3217 struct bfd_link_info *link_info)
3219 Elf_Internal_Shdr *symtab_hdr;
3220 Elf_Internal_Rela *internal_relocs = NULL;
3221 Elf_Internal_Rela *irel, *irelend;
3222 bfd_byte *contents = NULL;
3225 struct elf32_arm_link_hash_table *globals;
3227 /* If we are only performing a partial link do not bother
3228 to construct any glue. */
3229 if (link_info->relocatable)
3232 /* Here we have a bfd that is to be included on the link. We have a
3233 hook to do reloc rummaging, before section sizes are nailed down. */
3234 globals = elf32_arm_hash_table (link_info);
3236 BFD_ASSERT (globals != NULL);
3238 check_use_blx (globals);
3240 if (globals->byteswap_code && !bfd_big_endian (abfd))
3242 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
3247 /* PR 5398: If we have not decided to include any loadable sections in
3248 the output then we will not have a glue owner bfd. This is OK, it
3249 just means that there is nothing else for us to do here. */
3250 if (globals->bfd_of_glue_owner == NULL)
3253 /* Rummage around all the relocs and map the glue vectors. */
3254 sec = abfd->sections;
3259 for (; sec != NULL; sec = sec->next)
3261 if (sec->reloc_count == 0)
3264 if ((sec->flags & SEC_EXCLUDE) != 0)
3267 symtab_hdr = & elf_symtab_hdr (abfd);
3269 /* Load the relocs. */
3271 = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL,
3272 (Elf_Internal_Rela *) NULL, FALSE);
3274 if (internal_relocs == NULL)
3277 irelend = internal_relocs + sec->reloc_count;
3278 for (irel = internal_relocs; irel < irelend; irel++)
3281 unsigned long r_index;
3283 struct elf_link_hash_entry *h;
3285 r_type = ELF32_R_TYPE (irel->r_info);
3286 r_index = ELF32_R_SYM (irel->r_info);
3288 /* These are the only relocation types we care about. */
3289 if ( r_type != R_ARM_PC24
3290 && r_type != R_ARM_PLT32
3291 && r_type != R_ARM_CALL
3292 && r_type != R_ARM_JUMP24
3293 && r_type != R_ARM_THM_CALL
3294 && r_type != R_ARM_THM_JUMP24
3295 && (r_type != R_ARM_V4BX || globals->fix_v4bx < 2))
3298 /* Get the section contents if we haven't done so already. */
3299 if (contents == NULL)
3301 /* Get cached copy if it exists. */
3302 if (elf_section_data (sec)->this_hdr.contents != NULL)
3303 contents = elf_section_data (sec)->this_hdr.contents;
3306 /* Go get them off disk. */
3307 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
3312 if (r_type == R_ARM_V4BX)
3316 reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf;
3317 record_arm_bx_glue (link_info, reg);
3321 /* If the relocation is not against a symbol it cannot concern us. */
3324 /* We don't care about local symbols. */
3325 if (r_index < symtab_hdr->sh_info)
3328 /* This is an external symbol. */
3329 r_index -= symtab_hdr->sh_info;
3330 h = (struct elf_link_hash_entry *)
3331 elf_sym_hashes (abfd)[r_index];
3333 /* If the relocation is against a static symbol it must be within
3334 the current section and so cannot be a cross ARM/Thumb relocation. */
3338 /* If the call will go through a PLT entry then we do not need
3340 if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1)
3349 /* This one is a call from arm code. We need to look up
3350 the target of the call. If it is a thumb target, we
3352 if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC
3353 && !(r_type == R_ARM_CALL && globals->use_blx))
3354 record_arm_to_thumb_glue (link_info, h);
3357 case R_ARM_THM_CALL:
3358 case R_ARM_THM_JUMP24:
3359 /* This one is a call from thumb code. We look
3360 up the target of the call. If it is not a thumb
3361 target, we insert glue. */
3362 if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC
3363 && !(globals->use_blx && r_type == R_ARM_THM_CALL)
3364 && h->root.type != bfd_link_hash_undefweak)
3365 record_thumb_to_arm_glue (link_info, h);
3373 if (contents != NULL
3374 && elf_section_data (sec)->this_hdr.contents != contents)
3378 if (internal_relocs != NULL
3379 && elf_section_data (sec)->relocs != internal_relocs)
3380 free (internal_relocs);
3381 internal_relocs = NULL;
3387 if (contents != NULL
3388 && elf_section_data (sec)->this_hdr.contents != contents)
3390 if (internal_relocs != NULL
3391 && elf_section_data (sec)->relocs != internal_relocs)
3392 free (internal_relocs);
3399 /* Initialise maps of ARM/Thumb/data for input BFDs. */
3402 bfd_elf32_arm_init_maps (bfd *abfd)
3404 Elf_Internal_Sym *isymbuf;
3405 Elf_Internal_Shdr *hdr;
3406 unsigned int i, localsyms;
3408 if ((abfd->flags & DYNAMIC) != 0)
3411 hdr = & elf_symtab_hdr (abfd);
3412 localsyms = hdr->sh_info;
3414 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
3415 should contain the number of local symbols, which should come before any
3416 global symbols. Mapping symbols are always local. */
3417 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL,
3420 /* No internal symbols read? Skip this BFD. */
3421 if (isymbuf == NULL)
3424 for (i = 0; i < localsyms; i++)
3426 Elf_Internal_Sym *isym = &isymbuf[i];
3427 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
3431 && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
3433 name = bfd_elf_string_from_elf_section (abfd,
3434 hdr->sh_link, isym->st_name);
3436 if (bfd_is_arm_special_symbol_name (name,
3437 BFD_ARM_SPECIAL_SYM_TYPE_MAP))
3438 elf32_arm_section_map_add (sec, name[1], isym->st_value);
3445 bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info)
3447 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
3448 obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd);
3450 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
3451 if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7)
3453 switch (globals->vfp11_fix)
3455 case BFD_ARM_VFP11_FIX_DEFAULT:
3456 case BFD_ARM_VFP11_FIX_NONE:
3457 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
3461 /* Give a warning, but do as the user requests anyway. */
3462 (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum "
3463 "workaround is not necessary for target architecture"), obfd);
3466 else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT)
3467 /* For earlier architectures, we might need the workaround, but do not
3468 enable it by default. If users is running with broken hardware, they
3469 must enable the erratum fix explicitly. */
3470 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
3474 enum bfd_arm_vfp11_pipe {
3481 /* Return a VFP register number. This is encoded as RX:X for single-precision
3482 registers, or X:RX for double-precision registers, where RX is the group of
3483 four bits in the instruction encoding and X is the single extension bit.
3484 RX and X fields are specified using their lowest (starting) bit. The return
3487 0...31: single-precision registers s0...s31
3488 32...63: double-precision registers d0...d31.
3490 Although X should be zero for VFP11 (encoding d0...d15 only), we might
3491 encounter VFP3 instructions, so we allow the full range for DP registers. */
3494 bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx,
3498 return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32;
3500 return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1);
3503 /* Set bits in *WMASK according to a register number REG as encoded by
3504 bfd_arm_vfp11_regno(). Ignore d16-d31. */
3507 bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg)
3512 *wmask |= 3 << ((reg - 32) * 2);
3515 /* Return TRUE if WMASK overwrites anything in REGS. */
3518 bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs)
3522 for (i = 0; i < numregs; i++)
3524 unsigned int reg = regs[i];
3526 if (reg < 32 && (wmask & (1 << reg)) != 0)
3534 if ((wmask & (3 << (reg * 2))) != 0)
3541 /* In this function, we're interested in two things: finding input registers
3542 for VFP data-processing instructions, and finding the set of registers which
3543 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
3544 hold the written set, so FLDM etc. are easy to deal with (we're only
3545 interested in 32 SP registers or 16 dp registers, due to the VFP version
3546 implemented by the chip in question). DP registers are marked by setting
3547 both SP registers in the write mask). */
3549 static enum bfd_arm_vfp11_pipe
3550 bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs,
3553 enum bfd_arm_vfp11_pipe pipe = VFP11_BAD;
3554 bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0;
3556 if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
3559 unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
3560 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
3562 pqrs = ((insn & 0x00800000) >> 20)
3563 | ((insn & 0x00300000) >> 19)
3564 | ((insn & 0x00000040) >> 6);
3568 case 0: /* fmac[sd]. */
3569 case 1: /* fnmac[sd]. */
3570 case 2: /* fmsc[sd]. */
3571 case 3: /* fnmsc[sd]. */
3573 bfd_arm_vfp11_write_mask (destmask, fd);
3575 regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
3580 case 4: /* fmul[sd]. */
3581 case 5: /* fnmul[sd]. */
3582 case 6: /* fadd[sd]. */
3583 case 7: /* fsub[sd]. */
3587 case 8: /* fdiv[sd]. */
3590 bfd_arm_vfp11_write_mask (destmask, fd);
3591 regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
3596 case 15: /* extended opcode. */
3598 unsigned int extn = ((insn >> 15) & 0x1e)
3599 | ((insn >> 7) & 1);
3603 case 0: /* fcpy[sd]. */
3604 case 1: /* fabs[sd]. */
3605 case 2: /* fneg[sd]. */
3606 case 8: /* fcmp[sd]. */
3607 case 9: /* fcmpe[sd]. */
3608 case 10: /* fcmpz[sd]. */
3609 case 11: /* fcmpez[sd]. */
3610 case 16: /* fuito[sd]. */
3611 case 17: /* fsito[sd]. */
3612 case 24: /* ftoui[sd]. */
3613 case 25: /* ftouiz[sd]. */
3614 case 26: /* ftosi[sd]. */
3615 case 27: /* ftosiz[sd]. */
3616 /* These instructions will not bounce due to underflow. */
3621 case 3: /* fsqrt[sd]. */
3622 /* fsqrt cannot underflow, but it can (perhaps) overwrite
3623 registers to cause the erratum in previous instructions. */
3624 bfd_arm_vfp11_write_mask (destmask, fd);
3628 case 15: /* fcvt{ds,sd}. */
3632 bfd_arm_vfp11_write_mask (destmask, fd);
3634 /* Only FCVTSD can underflow. */
3635 if ((insn & 0x100) != 0)
3654 /* Two-register transfer. */
3655 else if ((insn & 0x0fe00ed0) == 0x0c400a10)
3657 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
3659 if ((insn & 0x100000) == 0)
3662 bfd_arm_vfp11_write_mask (destmask, fm);
3665 bfd_arm_vfp11_write_mask (destmask, fm);
3666 bfd_arm_vfp11_write_mask (destmask, fm + 1);
3672 else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */
3674 int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
3675 unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1);
3679 case 0: /* Two-reg transfer. We should catch these above. */
3682 case 2: /* fldm[sdx]. */
3686 unsigned int i, offset = insn & 0xff;
3691 for (i = fd; i < fd + offset; i++)
3692 bfd_arm_vfp11_write_mask (destmask, i);
3696 case 4: /* fld[sd]. */
3698 bfd_arm_vfp11_write_mask (destmask, fd);
3707 /* Single-register transfer. Note L==0. */
3708 else if ((insn & 0x0f100e10) == 0x0e000a10)
3710 unsigned int opcode = (insn >> 21) & 7;
3711 unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7);
3715 case 0: /* fmsr/fmdlr. */
3716 case 1: /* fmdhr. */
3717 /* Mark fmdhr and fmdlr as writing to the whole of the DP
3718 destination register. I don't know if this is exactly right,
3719 but it is the conservative choice. */
3720 bfd_arm_vfp11_write_mask (destmask, fn);
3734 static int elf32_arm_compare_mapping (const void * a, const void * b);
3737 /* Look for potentially-troublesome code sequences which might trigger the
3738 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
3739 (available from ARM) for details of the erratum. A short version is
3740 described in ld.texinfo. */
3743 bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info)
3746 bfd_byte *contents = NULL;
3748 int regs[3], numregs = 0;
3749 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
3750 int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR);
3752 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
3753 The states transition as follows:
3755 0 -> 1 (vector) or 0 -> 2 (scalar)
3756 A VFP FMAC-pipeline instruction has been seen. Fill
3757 regs[0]..regs[numregs-1] with its input operands. Remember this
3758 instruction in 'first_fmac'.
3761 Any instruction, except for a VFP instruction which overwrites
3766 A VFP instruction has been seen which overwrites any of regs[*].
3767 We must make a veneer! Reset state to 0 before examining next
3771 If we fail to match anything in state 2, reset to state 0 and reset
3772 the instruction pointer to the instruction after 'first_fmac'.
3774 If the VFP11 vector mode is in use, there must be at least two unrelated
3775 instructions between anti-dependent VFP11 instructions to properly avoid
3776 triggering the erratum, hence the use of the extra state 1.
3779 /* If we are only performing a partial link do not bother
3780 to construct any glue. */
3781 if (link_info->relocatable)
3784 /* Skip if this bfd does not correspond to an ELF image. */
3785 if (! is_arm_elf (abfd))
3788 /* We should have chosen a fix type by the time we get here. */
3789 BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT);
3791 if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE)
3794 for (sec = abfd->sections; sec != NULL; sec = sec->next)
3796 unsigned int i, span, first_fmac = 0, veneer_of_insn = 0;
3797 struct _arm_elf_section_data *sec_data;
3799 /* If we don't have executable progbits, we're not interested in this
3800 section. Also skip if section is to be excluded. */
3801 if (elf_section_type (sec) != SHT_PROGBITS
3802 || (elf_section_flags (sec) & SHF_EXECINSTR) == 0
3803 || (sec->flags & SEC_EXCLUDE) != 0
3804 || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0)
3807 sec_data = elf32_arm_section_data (sec);
3809 if (sec_data->mapcount == 0)
3812 if (elf_section_data (sec)->this_hdr.contents != NULL)
3813 contents = elf_section_data (sec)->this_hdr.contents;
3814 else if (! bfd_malloc_and_get_section (abfd, sec, &contents))
3817 qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map),
3818 elf32_arm_compare_mapping);
3820 for (span = 0; span < sec_data->mapcount; span++)
3822 unsigned int span_start = sec_data->map[span].vma;
3823 unsigned int span_end = (span == sec_data->mapcount - 1)
3824 ? sec->size : sec_data->map[span + 1].vma;
3825 char span_type = sec_data->map[span].type;
3827 /* FIXME: Only ARM mode is supported at present. We may need to
3828 support Thumb-2 mode also at some point. */
3829 if (span_type != 'a')
3832 for (i = span_start; i < span_end;)
3834 unsigned int next_i = i + 4;
3835 unsigned int insn = bfd_big_endian (abfd)
3836 ? (contents[i] << 24)
3837 | (contents[i + 1] << 16)
3838 | (contents[i + 2] << 8)
3840 : (contents[i + 3] << 24)
3841 | (contents[i + 2] << 16)
3842 | (contents[i + 1] << 8)
3844 unsigned int writemask = 0;
3845 enum bfd_arm_vfp11_pipe pipe;
3850 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs,
3852 /* I'm assuming the VFP11 erratum can trigger with denorm
3853 operands on either the FMAC or the DS pipeline. This might
3854 lead to slightly overenthusiastic veneer insertion. */
3855 if (pipe == VFP11_FMAC || pipe == VFP11_DS)
3857 state = use_vector ? 1 : 2;
3859 veneer_of_insn = insn;
3865 int other_regs[3], other_numregs;
3866 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
3869 if (pipe != VFP11_BAD
3870 && bfd_arm_vfp11_antidependency (writemask, regs,
3880 int other_regs[3], other_numregs;
3881 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
3884 if (pipe != VFP11_BAD
3885 && bfd_arm_vfp11_antidependency (writemask, regs,
3891 next_i = first_fmac + 4;
3897 abort (); /* Should be unreachable. */
3902 elf32_vfp11_erratum_list *newerr
3903 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
3906 errcount = ++(elf32_arm_section_data (sec)->erratumcount);
3908 newerr->u.b.vfp_insn = veneer_of_insn;
3913 newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER;
3920 record_vfp11_erratum_veneer (link_info, newerr, abfd, sec,
3925 newerr->next = sec_data->erratumlist;
3926 sec_data->erratumlist = newerr;
3935 if (contents != NULL
3936 && elf_section_data (sec)->this_hdr.contents != contents)
3944 if (contents != NULL
3945 && elf_section_data (sec)->this_hdr.contents != contents)
3951 /* Find virtual-memory addresses for VFP11 erratum veneers and return locations
3952 after sections have been laid out, using specially-named symbols. */
3955 bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd,
3956 struct bfd_link_info *link_info)
3959 struct elf32_arm_link_hash_table *globals;
3962 if (link_info->relocatable)
3965 /* Skip if this bfd does not correspond to an ELF image. */
3966 if (! is_arm_elf (abfd))
3969 globals = elf32_arm_hash_table (link_info);
3971 tmp_name = bfd_malloc ((bfd_size_type) strlen
3972 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
3974 for (sec = abfd->sections; sec != NULL; sec = sec->next)
3976 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
3977 elf32_vfp11_erratum_list *errnode = sec_data->erratumlist;
3979 for (; errnode != NULL; errnode = errnode->next)
3981 struct elf_link_hash_entry *myh;
3984 switch (errnode->type)
3986 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
3987 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER:
3988 /* Find veneer symbol. */
3989 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
3990 errnode->u.b.veneer->u.v.id);
3992 myh = elf_link_hash_lookup
3993 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
3996 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
3997 "`%s'"), abfd, tmp_name);
3999 vma = myh->root.u.def.section->output_section->vma
4000 + myh->root.u.def.section->output_offset
4001 + myh->root.u.def.value;
4003 errnode->u.b.veneer->vma = vma;
4006 case VFP11_ERRATUM_ARM_VENEER:
4007 case VFP11_ERRATUM_THUMB_VENEER:
4008 /* Find return location. */
4009 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
4012 myh = elf_link_hash_lookup
4013 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
4016 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
4017 "`%s'"), abfd, tmp_name);
4019 vma = myh->root.u.def.section->output_section->vma
4020 + myh->root.u.def.section->output_offset
4021 + myh->root.u.def.value;
4023 errnode->u.v.branch->vma = vma;
4036 /* Set target relocation values needed during linking. */
4039 bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd,
4040 struct bfd_link_info *link_info,
4042 char * target2_type,
4045 bfd_arm_vfp11_fix vfp11_fix,
4046 int no_enum_warn, int pic_veneer)
4048 struct elf32_arm_link_hash_table *globals;
4050 globals = elf32_arm_hash_table (link_info);
4052 globals->target1_is_rel = target1_is_rel;
4053 if (strcmp (target2_type, "rel") == 0)
4054 globals->target2_reloc = R_ARM_REL32;
4055 else if (strcmp (target2_type, "abs") == 0)
4056 globals->target2_reloc = R_ARM_ABS32;
4057 else if (strcmp (target2_type, "got-rel") == 0)
4058 globals->target2_reloc = R_ARM_GOT_PREL;
4061 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
4064 globals->fix_v4bx = fix_v4bx;
4065 globals->use_blx |= use_blx;
4066 globals->vfp11_fix = vfp11_fix;
4067 globals->pic_veneer = pic_veneer;
4069 BFD_ASSERT (is_arm_elf (output_bfd));
4070 elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
4073 /* The thumb form of a long branch is a bit finicky, because the offset
4074 encoding is split over two fields, each in it's own instruction. They
4075 can occur in any order. So given a thumb form of long branch, and an
4076 offset, insert the offset into the thumb branch and return finished
4079 It takes two thumb instructions to encode the target address. Each has
4080 11 bits to invest. The upper 11 bits are stored in one (identified by
4081 H-0.. see below), the lower 11 bits are stored in the other (identified
4084 Combine together and shifted left by 1 (it's a half word address) and
4088 H-0, upper address-0 = 000
4090 H-1, lower address-0 = 800
4092 They can be ordered either way, but the arm tools I've seen always put
4093 the lower one first. It probably doesn't matter. krk@cygnus.com
4095 XXX: Actually the order does matter. The second instruction (H-1)
4096 moves the computed address into the PC, so it must be the second one
4097 in the sequence. The problem, however is that whilst little endian code
4098 stores the instructions in HI then LOW order, big endian code does the
4099 reverse. nickc@cygnus.com. */
4101 #define LOW_HI_ORDER 0xF800F000
4102 #define HI_LOW_ORDER 0xF000F800
4105 insert_thumb_branch (insn32 br_insn, int rel_off)
4107 unsigned int low_bits;
4108 unsigned int high_bits;
4110 BFD_ASSERT ((rel_off & 1) != 1);
4112 rel_off >>= 1; /* Half word aligned address. */
4113 low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */
4114 high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */
4116 if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER)
4117 br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits;
4118 else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER)
4119 br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits;
4121 /* FIXME: abort is probably not the right call. krk@cygnus.com */
4122 abort (); /* Error - not a valid branch instruction form. */
4128 /* Store an Arm insn into an output section not processed by
4129 elf32_arm_write_section. */
4132 put_arm_insn (struct elf32_arm_link_hash_table *htab,
4133 bfd * output_bfd, bfd_vma val, void * ptr)
4135 if (htab->byteswap_code != bfd_little_endian (output_bfd))
4136 bfd_putl32 (val, ptr);
4138 bfd_putb32 (val, ptr);
4142 /* Store a 16-bit Thumb insn into an output section not processed by
4143 elf32_arm_write_section. */
4146 put_thumb_insn (struct elf32_arm_link_hash_table *htab,
4147 bfd * output_bfd, bfd_vma val, void * ptr)
4149 if (htab->byteswap_code != bfd_little_endian (output_bfd))
4150 bfd_putl16 (val, ptr);
4152 bfd_putb16 (val, ptr);
4156 /* Thumb code calling an ARM function. */
4159 elf32_thumb_to_arm_stub (struct bfd_link_info * info,
4163 asection * input_section,
4164 bfd_byte * hit_data,
4167 bfd_signed_vma addend,
4169 char **error_message)
4173 unsigned long int tmp;
4174 long int ret_offset;
4175 struct elf_link_hash_entry * myh;
4176 struct elf32_arm_link_hash_table * globals;
4178 myh = find_thumb_glue (info, name, error_message);
4182 globals = elf32_arm_hash_table (info);
4184 BFD_ASSERT (globals != NULL);
4185 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4187 my_offset = myh->root.u.def.value;
4189 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4190 THUMB2ARM_GLUE_SECTION_NAME);
4192 BFD_ASSERT (s != NULL);
4193 BFD_ASSERT (s->contents != NULL);
4194 BFD_ASSERT (s->output_section != NULL);
4196 if ((my_offset & 0x01) == 0x01)
4199 && sym_sec->owner != NULL
4200 && !INTERWORK_FLAG (sym_sec->owner))
4202 (*_bfd_error_handler)
4203 (_("%B(%s): warning: interworking not enabled.\n"
4204 " first occurrence: %B: thumb call to arm"),
4205 sym_sec->owner, input_bfd, name);
4211 myh->root.u.def.value = my_offset;
4213 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn,
4214 s->contents + my_offset);
4216 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn,
4217 s->contents + my_offset + 2);
4220 /* Address of destination of the stub. */
4221 ((bfd_signed_vma) val)
4223 /* Offset from the start of the current section
4224 to the start of the stubs. */
4226 /* Offset of the start of this stub from the start of the stubs. */
4228 /* Address of the start of the current section. */
4229 + s->output_section->vma)
4230 /* The branch instruction is 4 bytes into the stub. */
4232 /* ARM branches work from the pc of the instruction + 8. */
4235 put_arm_insn (globals, output_bfd,
4236 (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
4237 s->contents + my_offset + 4);
4240 BFD_ASSERT (my_offset <= globals->thumb_glue_size);
4242 /* Now go back and fix up the original BL insn to point to here. */
4244 /* Address of where the stub is located. */
4245 (s->output_section->vma + s->output_offset + my_offset)
4246 /* Address of where the BL is located. */
4247 - (input_section->output_section->vma + input_section->output_offset
4249 /* Addend in the relocation. */
4251 /* Biassing for PC-relative addressing. */
4254 tmp = bfd_get_32 (input_bfd, hit_data
4255 - input_section->vma);
4257 bfd_put_32 (output_bfd,
4258 (bfd_vma) insert_thumb_branch (tmp, ret_offset),
4259 hit_data - input_section->vma);
4264 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
4266 static struct elf_link_hash_entry *
4267 elf32_arm_create_thumb_stub (struct bfd_link_info * info,
4274 char **error_message)
4277 long int ret_offset;
4278 struct elf_link_hash_entry * myh;
4279 struct elf32_arm_link_hash_table * globals;
4281 myh = find_arm_glue (info, name, error_message);
4285 globals = elf32_arm_hash_table (info);
4287 BFD_ASSERT (globals != NULL);
4288 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4290 my_offset = myh->root.u.def.value;
4292 if ((my_offset & 0x01) == 0x01)
4295 && sym_sec->owner != NULL
4296 && !INTERWORK_FLAG (sym_sec->owner))
4298 (*_bfd_error_handler)
4299 (_("%B(%s): warning: interworking not enabled.\n"
4300 " first occurrence: %B: arm call to thumb"),
4301 sym_sec->owner, input_bfd, name);
4305 myh->root.u.def.value = my_offset;
4307 if (info->shared || globals->root.is_relocatable_executable
4308 || globals->pic_veneer)
4310 /* For relocatable objects we can't use absolute addresses,
4311 so construct the address from a relative offset. */
4312 /* TODO: If the offset is small it's probably worth
4313 constructing the address with adds. */
4314 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn,
4315 s->contents + my_offset);
4316 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn,
4317 s->contents + my_offset + 4);
4318 put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
4319 s->contents + my_offset + 8);
4320 /* Adjust the offset by 4 for the position of the add,
4321 and 8 for the pipeline offset. */
4322 ret_offset = (val - (s->output_offset
4323 + s->output_section->vma
4326 bfd_put_32 (output_bfd, ret_offset,
4327 s->contents + my_offset + 12);
4329 else if (globals->use_blx)
4331 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn,
4332 s->contents + my_offset);
4334 /* It's a thumb address. Add the low order bit. */
4335 bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn,
4336 s->contents + my_offset + 4);
4340 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn,
4341 s->contents + my_offset);
4343 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn,
4344 s->contents + my_offset + 4);
4346 /* It's a thumb address. Add the low order bit. */
4347 bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
4348 s->contents + my_offset + 8);
4352 BFD_ASSERT (my_offset <= globals->arm_glue_size);
4357 /* Arm code calling a Thumb function. */
4360 elf32_arm_to_thumb_stub (struct bfd_link_info * info,
4364 asection * input_section,
4365 bfd_byte * hit_data,
4368 bfd_signed_vma addend,
4370 char **error_message)
4372 unsigned long int tmp;
4375 long int ret_offset;
4376 struct elf_link_hash_entry * myh;
4377 struct elf32_arm_link_hash_table * globals;
4379 globals = elf32_arm_hash_table (info);
4381 BFD_ASSERT (globals != NULL);
4382 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4384 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4385 ARM2THUMB_GLUE_SECTION_NAME);
4386 BFD_ASSERT (s != NULL);
4387 BFD_ASSERT (s->contents != NULL);
4388 BFD_ASSERT (s->output_section != NULL);
4390 myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd,
4391 sym_sec, val, s, error_message);
4395 my_offset = myh->root.u.def.value;
4396 tmp = bfd_get_32 (input_bfd, hit_data);
4397 tmp = tmp & 0xFF000000;
4399 /* Somehow these are both 4 too far, so subtract 8. */
4400 ret_offset = (s->output_offset
4402 + s->output_section->vma
4403 - (input_section->output_offset
4404 + input_section->output_section->vma
4408 tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
4410 bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
4415 /* Populate Arm stub for an exported Thumb function. */
4418 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf)
4420 struct bfd_link_info * info = (struct bfd_link_info *) inf;
4422 struct elf_link_hash_entry * myh;
4423 struct elf32_arm_link_hash_entry *eh;
4424 struct elf32_arm_link_hash_table * globals;
4427 char *error_message;
4429 eh = elf32_arm_hash_entry(h);
4430 /* Allocate stubs for exported Thumb functions on v4t. */
4431 if (eh->export_glue == NULL)
4434 globals = elf32_arm_hash_table (info);
4436 BFD_ASSERT (globals != NULL);
4437 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4439 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4440 ARM2THUMB_GLUE_SECTION_NAME);
4441 BFD_ASSERT (s != NULL);
4442 BFD_ASSERT (s->contents != NULL);
4443 BFD_ASSERT (s->output_section != NULL);
4445 sec = eh->export_glue->root.u.def.section;
4447 BFD_ASSERT (sec->output_section != NULL);
4449 val = eh->export_glue->root.u.def.value + sec->output_offset
4450 + sec->output_section->vma;
4451 myh = elf32_arm_create_thumb_stub (info, h->root.root.string,
4452 h->root.u.def.section->owner,
4453 globals->obfd, sec, val, s,
4459 /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */
4462 elf32_arm_bx_glue (struct bfd_link_info * info, int reg)
4467 struct elf32_arm_link_hash_table *globals;
4469 globals = elf32_arm_hash_table (info);
4471 BFD_ASSERT (globals != NULL);
4472 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4474 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4475 ARM_BX_GLUE_SECTION_NAME);
4476 BFD_ASSERT (s != NULL);
4477 BFD_ASSERT (s->contents != NULL);
4478 BFD_ASSERT (s->output_section != NULL);
4480 BFD_ASSERT (globals->bx_glue_offset[reg] & 2);
4482 glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3;
4484 if ((globals->bx_glue_offset[reg] & 1) == 0)
4486 p = s->contents + glue_addr;
4487 bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p);
4488 bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4);
4489 bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8);
4490 globals->bx_glue_offset[reg] |= 1;
4493 return glue_addr + s->output_section->vma + s->output_offset;
4496 /* Generate Arm stubs for exported Thumb symbols. */
4498 elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED,
4499 struct bfd_link_info *link_info)
4501 struct elf32_arm_link_hash_table * globals;
4506 globals = elf32_arm_hash_table (link_info);
4507 /* If blx is available then exported Thumb symbols are OK and there is
4509 if (globals->use_blx)
4512 elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub,
4516 /* Some relocations map to different relocations depending on the
4517 target. Return the real relocation. */
4519 arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
4525 if (globals->target1_is_rel)
4531 return globals->target2_reloc;
4538 /* Return the base VMA address which should be subtracted from real addresses
4539 when resolving @dtpoff relocation.
4540 This is PT_TLS segment p_vaddr. */
4543 dtpoff_base (struct bfd_link_info *info)
4545 /* If tls_sec is NULL, we should have signalled an error already. */
4546 if (elf_hash_table (info)->tls_sec == NULL)
4548 return elf_hash_table (info)->tls_sec->vma;
4551 /* Return the relocation value for @tpoff relocation
4552 if STT_TLS virtual address is ADDRESS. */
4555 tpoff (struct bfd_link_info *info, bfd_vma address)
4557 struct elf_link_hash_table *htab = elf_hash_table (info);
4560 /* If tls_sec is NULL, we should have signalled an error already. */
4561 if (htab->tls_sec == NULL)
4563 base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
4564 return address - htab->tls_sec->vma + base;
4567 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
4568 VALUE is the relocation value. */
4570 static bfd_reloc_status_type
4571 elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value)
4574 return bfd_reloc_overflow;
4576 value |= bfd_get_32 (abfd, data) & 0xfffff000;
4577 bfd_put_32 (abfd, value, data);
4578 return bfd_reloc_ok;
4581 /* For a given value of n, calculate the value of G_n as required to
4582 deal with group relocations. We return it in the form of an
4583 encoded constant-and-rotation, together with the final residual. If n is
4584 specified as less than zero, then final_residual is filled with the
4585 input value and no further action is performed. */
4588 calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual)
4592 bfd_vma encoded_g_n = 0;
4593 bfd_vma residual = value; /* Also known as Y_n. */
4595 for (current_n = 0; current_n <= n; current_n++)
4599 /* Calculate which part of the value to mask. */
4606 /* Determine the most significant bit in the residual and
4607 align the resulting value to a 2-bit boundary. */
4608 for (msb = 30; msb >= 0; msb -= 2)
4609 if (residual & (3 << msb))
4612 /* The desired shift is now (msb - 6), or zero, whichever
4619 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
4620 g_n = residual & (0xff << shift);
4621 encoded_g_n = (g_n >> shift)
4622 | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8);
4624 /* Calculate the residual for the next time around. */
4628 *final_residual = residual;
4633 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
4634 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
4636 identify_add_or_sub(bfd_vma insn)
4638 int opcode = insn & 0x1e00000;
4640 if (opcode == 1 << 23) /* ADD */
4643 if (opcode == 1 << 22) /* SUB */
4649 /* Determine if we're dealing with a Thumb-2 object. */
4651 static int using_thumb2 (struct elf32_arm_link_hash_table *globals)
4653 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
4655 return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7;
4658 /* Perform a relocation as part of a final link. */
4660 static bfd_reloc_status_type
4661 elf32_arm_final_link_relocate (reloc_howto_type * howto,
4664 asection * input_section,
4665 bfd_byte * contents,
4666 Elf_Internal_Rela * rel,
4668 struct bfd_link_info * info,
4670 const char * sym_name,
4672 struct elf_link_hash_entry * h,
4673 bfd_boolean * unresolved_reloc_p,
4674 char **error_message)
4676 unsigned long r_type = howto->type;
4677 unsigned long r_symndx;
4678 bfd_byte * hit_data = contents + rel->r_offset;
4679 bfd * dynobj = NULL;
4680 Elf_Internal_Shdr * symtab_hdr;
4681 struct elf_link_hash_entry ** sym_hashes;
4682 bfd_vma * local_got_offsets;
4683 asection * sgot = NULL;
4684 asection * splt = NULL;
4685 asection * sreloc = NULL;
4687 bfd_signed_vma signed_addend;
4688 struct elf32_arm_link_hash_table * globals;
4690 globals = elf32_arm_hash_table (info);
4692 BFD_ASSERT (is_arm_elf (input_bfd));
4694 /* Some relocation types map to different relocations depending on the
4695 target. We pick the right one here. */
4696 r_type = arm_real_reloc_type (globals, r_type);
4697 if (r_type != howto->type)
4698 howto = elf32_arm_howto_from_type (r_type);
4700 /* If the start address has been set, then set the EF_ARM_HASENTRY
4701 flag. Setting this more than once is redundant, but the cost is
4702 not too high, and it keeps the code simple.
4704 The test is done here, rather than somewhere else, because the
4705 start address is only set just before the final link commences.
4707 Note - if the user deliberately sets a start address of 0, the
4708 flag will not be set. */
4709 if (bfd_get_start_address (output_bfd) != 0)
4710 elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
4712 dynobj = elf_hash_table (info)->dynobj;
4715 sgot = bfd_get_section_by_name (dynobj, ".got");
4716 splt = bfd_get_section_by_name (dynobj, ".plt");
4718 symtab_hdr = & elf_symtab_hdr (input_bfd);
4719 sym_hashes = elf_sym_hashes (input_bfd);
4720 local_got_offsets = elf_local_got_offsets (input_bfd);
4721 r_symndx = ELF32_R_SYM (rel->r_info);
4723 if (globals->use_rel)
4725 addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
4727 if (addend & ((howto->src_mask + 1) >> 1))
4730 signed_addend &= ~ howto->src_mask;
4731 signed_addend |= addend;
4734 signed_addend = addend;
4737 addend = signed_addend = rel->r_addend;
4742 /* We don't need to find a value for this symbol. It's just a
4744 *unresolved_reloc_p = FALSE;
4745 return bfd_reloc_ok;
4748 if (!globals->vxworks_p)
4749 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
4753 case R_ARM_ABS32_NOI:
4755 case R_ARM_REL32_NOI:
4761 /* Handle relocations which should use the PLT entry. ABS32/REL32
4762 will use the symbol's value, which may point to a PLT entry, but we
4763 don't need to handle that here. If we created a PLT entry, all
4764 branches in this object should go to it. */
4765 if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32
4766 && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI)
4769 && h->plt.offset != (bfd_vma) -1)
4771 /* If we've created a .plt section, and assigned a PLT entry to
4772 this function, it should not be known to bind locally. If
4773 it were, we would have cleared the PLT entry. */
4774 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
4776 value = (splt->output_section->vma
4777 + splt->output_offset
4779 *unresolved_reloc_p = FALSE;
4780 return _bfd_final_link_relocate (howto, input_bfd, input_section,
4781 contents, rel->r_offset, value,
4785 /* When generating a shared object or relocatable executable, these
4786 relocations are copied into the output file to be resolved at
4788 if ((info->shared || globals->root.is_relocatable_executable)
4789 && (input_section->flags & SEC_ALLOC)
4790 && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI)
4791 || !SYMBOL_CALLS_LOCAL (info, h))
4793 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4794 || h->root.type != bfd_link_hash_undefweak)
4795 && r_type != R_ARM_PC24
4796 && r_type != R_ARM_CALL
4797 && r_type != R_ARM_JUMP24
4798 && r_type != R_ARM_PREL31
4799 && r_type != R_ARM_PLT32)
4801 Elf_Internal_Rela outrel;
4803 bfd_boolean skip, relocate;
4805 *unresolved_reloc_p = FALSE;
4811 name = (bfd_elf_string_from_elf_section
4813 elf_elfheader (input_bfd)->e_shstrndx,
4814 elf_section_data (input_section)->rel_hdr.sh_name));
4816 return bfd_reloc_notsupported;
4818 BFD_ASSERT (reloc_section_p (globals, name, input_section));
4820 sreloc = bfd_get_section_by_name (dynobj, name);
4821 BFD_ASSERT (sreloc != NULL);
4827 outrel.r_addend = addend;
4829 _bfd_elf_section_offset (output_bfd, info, input_section,
4831 if (outrel.r_offset == (bfd_vma) -1)
4833 else if (outrel.r_offset == (bfd_vma) -2)
4834 skip = TRUE, relocate = TRUE;
4835 outrel.r_offset += (input_section->output_section->vma
4836 + input_section->output_offset);
4839 memset (&outrel, 0, sizeof outrel);
4844 || !h->def_regular))
4845 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
4850 /* This symbol is local, or marked to become local. */
4851 if (sym_flags == STT_ARM_TFUNC)
4853 if (globals->symbian_p)
4857 /* On Symbian OS, the data segment and text segement
4858 can be relocated independently. Therefore, we
4859 must indicate the segment to which this
4860 relocation is relative. The BPABI allows us to
4861 use any symbol in the right segment; we just use
4862 the section symbol as it is convenient. (We
4863 cannot use the symbol given by "h" directly as it
4864 will not appear in the dynamic symbol table.)
4866 Note that the dynamic linker ignores the section
4867 symbol value, so we don't subtract osec->vma
4868 from the emitted reloc addend. */
4870 osec = sym_sec->output_section;
4872 osec = input_section->output_section;
4873 symbol = elf_section_data (osec)->dynindx;
4876 struct elf_link_hash_table *htab = elf_hash_table (info);
4878 if ((osec->flags & SEC_READONLY) == 0
4879 && htab->data_index_section != NULL)
4880 osec = htab->data_index_section;
4882 osec = htab->text_index_section;
4883 symbol = elf_section_data (osec)->dynindx;
4885 BFD_ASSERT (symbol != 0);
4888 /* On SVR4-ish systems, the dynamic loader cannot
4889 relocate the text and data segments independently,
4890 so the symbol does not matter. */
4892 outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
4893 if (globals->use_rel)
4896 outrel.r_addend += value;
4899 loc = sreloc->contents;
4900 loc += sreloc->reloc_count++ * RELOC_SIZE (globals);
4901 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
4903 /* If this reloc is against an external symbol, we do not want to
4904 fiddle with the addend. Otherwise, we need to include the symbol
4905 value so that it becomes an addend for the dynamic reloc. */
4907 return bfd_reloc_ok;
4909 return _bfd_final_link_relocate (howto, input_bfd, input_section,
4910 contents, rel->r_offset, value,
4913 else switch (r_type)
4916 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
4918 case R_ARM_XPC25: /* Arm BLX instruction. */
4921 case R_ARM_PC24: /* Arm B/BL instruction */
4923 if (r_type == R_ARM_XPC25)
4925 /* Check for Arm calling Arm function. */
4926 /* FIXME: Should we translate the instruction into a BL
4927 instruction instead ? */
4928 if (sym_flags != STT_ARM_TFUNC)
4929 (*_bfd_error_handler)
4930 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
4932 h ? h->root.root.string : "(local)");
4934 else if (r_type != R_ARM_CALL || !globals->use_blx)
4936 /* Check for Arm calling Thumb function. */
4937 if (sym_flags == STT_ARM_TFUNC)
4939 if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
4940 output_bfd, input_section,
4941 hit_data, sym_sec, rel->r_offset,
4942 signed_addend, value,
4944 return bfd_reloc_ok;
4946 return bfd_reloc_dangerous;
4950 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
4952 S is the address of the symbol in the relocation.
4953 P is address of the instruction being relocated.
4954 A is the addend (extracted from the instruction) in bytes.
4956 S is held in 'value'.
4957 P is the base address of the section containing the
4958 instruction plus the offset of the reloc into that
4960 (input_section->output_section->vma +
4961 input_section->output_offset +
4963 A is the addend, converted into bytes, ie:
4966 Note: None of these operations have knowledge of the pipeline
4967 size of the processor, thus it is up to the assembler to
4968 encode this information into the addend. */
4969 value -= (input_section->output_section->vma
4970 + input_section->output_offset);
4971 value -= rel->r_offset;
4972 if (globals->use_rel)
4973 value += (signed_addend << howto->size);
4975 /* RELA addends do not have to be adjusted by howto->size. */
4976 value += signed_addend;
4978 signed_addend = value;
4979 signed_addend >>= howto->rightshift;
4981 /* A branch to an undefined weak symbol is turned into a jump to
4982 the next instruction. */
4983 if (h && h->root.type == bfd_link_hash_undefweak)
4985 value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000)
4990 /* Perform a signed range check. */
4991 if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
4992 || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
4993 return bfd_reloc_overflow;
4995 addend = (value & 2);
4997 value = (signed_addend & howto->dst_mask)
4998 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
5000 /* Set the H bit in the BLX instruction. */
5001 if (sym_flags == STT_ARM_TFUNC)
5006 value &= ~(bfd_vma)(1 << 24);
5008 if (r_type == R_ARM_CALL)
5010 /* Select the correct instruction (BL or BLX). */
5011 if (sym_flags == STT_ARM_TFUNC)
5015 value &= ~(bfd_vma)(1 << 28);
5024 if (sym_flags == STT_ARM_TFUNC)
5028 case R_ARM_ABS32_NOI:
5034 if (sym_flags == STT_ARM_TFUNC)
5036 value -= (input_section->output_section->vma
5037 + input_section->output_offset + rel->r_offset);
5040 case R_ARM_REL32_NOI:
5042 value -= (input_section->output_section->vma
5043 + input_section->output_offset + rel->r_offset);
5047 value -= (input_section->output_section->vma
5048 + input_section->output_offset + rel->r_offset);
5049 value += signed_addend;
5050 if (! h || h->root.type != bfd_link_hash_undefweak)
5052 /* Check for overflow */
5053 if ((value ^ (value >> 1)) & (1 << 30))
5054 return bfd_reloc_overflow;
5056 value &= 0x7fffffff;
5057 value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
5058 if (sym_flags == STT_ARM_TFUNC)
5063 bfd_put_32 (input_bfd, value, hit_data);
5064 return bfd_reloc_ok;
5068 if ((long) value > 0x7f || (long) value < -0x80)
5069 return bfd_reloc_overflow;
5071 bfd_put_8 (input_bfd, value, hit_data);
5072 return bfd_reloc_ok;
5077 if ((long) value > 0x7fff || (long) value < -0x8000)
5078 return bfd_reloc_overflow;
5080 bfd_put_16 (input_bfd, value, hit_data);
5081 return bfd_reloc_ok;
5083 case R_ARM_THM_ABS5:
5084 /* Support ldr and str instructions for the thumb. */
5085 if (globals->use_rel)
5087 /* Need to refetch addend. */
5088 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
5089 /* ??? Need to determine shift amount from operand size. */
5090 addend >>= howto->rightshift;
5094 /* ??? Isn't value unsigned? */
5095 if ((long) value > 0x1f || (long) value < -0x10)
5096 return bfd_reloc_overflow;
5098 /* ??? Value needs to be properly shifted into place first. */
5099 value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
5100 bfd_put_16 (input_bfd, value, hit_data);
5101 return bfd_reloc_ok;
5103 case R_ARM_THM_ALU_PREL_11_0:
5104 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
5107 bfd_signed_vma relocation;
5109 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
5110 | bfd_get_16 (input_bfd, hit_data + 2);
5112 if (globals->use_rel)
5114 signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4)
5115 | ((insn & (1 << 26)) >> 15);
5116 if (insn & 0xf00000)
5117 signed_addend = -signed_addend;
5120 relocation = value + signed_addend;
5121 relocation -= (input_section->output_section->vma
5122 + input_section->output_offset
5125 value = abs (relocation);
5127 if (value >= 0x1000)
5128 return bfd_reloc_overflow;
5130 insn = (insn & 0xfb0f8f00) | (value & 0xff)
5131 | ((value & 0x700) << 4)
5132 | ((value & 0x800) << 15);
5136 bfd_put_16 (input_bfd, insn >> 16, hit_data);
5137 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
5139 return bfd_reloc_ok;
5142 case R_ARM_THM_PC12:
5143 /* Corresponds to: ldr.w reg, [pc, #offset]. */
5146 bfd_signed_vma relocation;
5148 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
5149 | bfd_get_16 (input_bfd, hit_data + 2);
5151 if (globals->use_rel)
5153 signed_addend = insn & 0xfff;
5154 if (!(insn & (1 << 23)))
5155 signed_addend = -signed_addend;
5158 relocation = value + signed_addend;
5159 relocation -= (input_section->output_section->vma
5160 + input_section->output_offset
5163 value = abs (relocation);
5165 if (value >= 0x1000)
5166 return bfd_reloc_overflow;
5168 insn = (insn & 0xff7ff000) | value;
5169 if (relocation >= 0)
5172 bfd_put_16 (input_bfd, insn >> 16, hit_data);
5173 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
5175 return bfd_reloc_ok;
5178 case R_ARM_THM_XPC22:
5179 case R_ARM_THM_CALL:
5180 case R_ARM_THM_JUMP24:
5181 /* Thumb BL (branch long instruction). */
5185 bfd_boolean overflow = FALSE;
5186 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
5187 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
5188 bfd_signed_vma reloc_signed_max;
5189 bfd_signed_vma reloc_signed_min;
5191 bfd_signed_vma signed_check;
5193 int thumb2 = using_thumb2 (globals);
5195 /* A branch to an undefined weak symbol is turned into a jump to
5196 the next instruction. */
5197 if (h && h->root.type == bfd_link_hash_undefweak)
5199 bfd_put_16 (input_bfd, 0xe000, hit_data);
5200 bfd_put_16 (input_bfd, 0xbf00, hit_data + 2);
5201 return bfd_reloc_ok;
5204 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
5205 with Thumb-1) involving the J1 and J2 bits. */
5206 if (globals->use_rel)
5208 bfd_vma s = (upper_insn & (1 << 10)) >> 10;
5209 bfd_vma upper = upper_insn & 0x3ff;
5210 bfd_vma lower = lower_insn & 0x7ff;
5211 bfd_vma j1 = (lower_insn & (1 << 13)) >> 13;
5212 bfd_vma j2 = (lower_insn & (1 << 11)) >> 11;
5213 bfd_vma i1 = j1 ^ s ? 0 : 1;
5214 bfd_vma i2 = j2 ^ s ? 0 : 1;
5216 addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1);
5218 addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24);
5220 signed_addend = addend;
5223 if (r_type == R_ARM_THM_XPC22)
5225 /* Check for Thumb to Thumb call. */
5226 /* FIXME: Should we translate the instruction into a BL
5227 instruction instead ? */
5228 if (sym_flags == STT_ARM_TFUNC)
5229 (*_bfd_error_handler)
5230 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
5232 h ? h->root.root.string : "(local)");
5236 /* If it is not a call to Thumb, assume call to Arm.
5237 If it is a call relative to a section name, then it is not a
5238 function call at all, but rather a long jump. Calls through
5239 the PLT do not require stubs. */
5240 if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION
5241 && (h == NULL || splt == NULL
5242 || h->plt.offset == (bfd_vma) -1))
5244 if (globals->use_blx && r_type == R_ARM_THM_CALL)
5246 /* Convert BL to BLX. */
5247 lower_insn = (lower_insn & ~0x1000) | 0x0800;
5249 else if (elf32_thumb_to_arm_stub
5250 (info, sym_name, input_bfd, output_bfd, input_section,
5251 hit_data, sym_sec, rel->r_offset, signed_addend, value,
5253 return bfd_reloc_ok;
5255 return bfd_reloc_dangerous;
5257 else if (sym_flags == STT_ARM_TFUNC && globals->use_blx
5258 && r_type == R_ARM_THM_CALL)
5260 /* Make sure this is a BL. */
5261 lower_insn |= 0x1800;
5265 /* Handle calls via the PLT. */
5266 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
5268 value = (splt->output_section->vma
5269 + splt->output_offset
5271 if (globals->use_blx && r_type == R_ARM_THM_CALL)
5273 /* If the Thumb BLX instruction is available, convert the
5274 BL to a BLX instruction to call the ARM-mode PLT entry. */
5275 lower_insn = (lower_insn & ~0x1000) | 0x0800;
5278 /* Target the Thumb stub before the ARM PLT entry. */
5279 value -= PLT_THUMB_STUB_SIZE;
5280 *unresolved_reloc_p = FALSE;
5283 relocation = value + signed_addend;
5285 relocation -= (input_section->output_section->vma
5286 + input_section->output_offset
5289 check = relocation >> howto->rightshift;
5291 /* If this is a signed value, the rightshift just dropped
5292 leading 1 bits (assuming twos complement). */
5293 if ((bfd_signed_vma) relocation >= 0)
5294 signed_check = check;
5296 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
5298 /* Calculate the permissable maximum and minimum values for
5299 this relocation according to whether we're relocating for
5301 bitsize = howto->bitsize;
5304 reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift;
5305 reloc_signed_min = ~reloc_signed_max;
5307 /* Assumes two's complement. */
5308 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
5311 if ((lower_insn & 0x5000) == 0x4000)
5312 /* For a BLX instruction, make sure that the relocation is rounded up
5313 to a word boundary. This follows the semantics of the instruction
5314 which specifies that bit 1 of the target address will come from bit
5315 1 of the base address. */
5316 relocation = (relocation + 2) & ~ 3;
5318 /* Put RELOCATION back into the insn. Assumes two's complement.
5319 We use the Thumb-2 encoding, which is safe even if dealing with
5320 a Thumb-1 instruction by virtue of our overflow check above. */
5321 reloc_sign = (signed_check < 0) ? 1 : 0;
5322 upper_insn = (upper_insn & ~(bfd_vma) 0x7ff)
5323 | ((relocation >> 12) & 0x3ff)
5324 | (reloc_sign << 10);
5325 lower_insn = (lower_insn & ~(bfd_vma) 0x2fff)
5326 | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13)
5327 | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11)
5328 | ((relocation >> 1) & 0x7ff);
5330 /* Put the relocated value back in the object file: */
5331 bfd_put_16 (input_bfd, upper_insn, hit_data);
5332 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
5334 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
5338 case R_ARM_THM_JUMP19:
5339 /* Thumb32 conditional branch instruction. */
5342 bfd_boolean overflow = FALSE;
5343 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
5344 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
5345 bfd_signed_vma reloc_signed_max = 0xffffe;
5346 bfd_signed_vma reloc_signed_min = -0x100000;
5347 bfd_signed_vma signed_check;
5349 /* Need to refetch the addend, reconstruct the top three bits,
5350 and squish the two 11 bit pieces together. */
5351 if (globals->use_rel)
5353 bfd_vma S = (upper_insn & 0x0400) >> 10;
5354 bfd_vma upper = (upper_insn & 0x003f);
5355 bfd_vma J1 = (lower_insn & 0x2000) >> 13;
5356 bfd_vma J2 = (lower_insn & 0x0800) >> 11;
5357 bfd_vma lower = (lower_insn & 0x07ff);
5362 upper -= 0x0100; /* Sign extend. */
5364 addend = (upper << 12) | (lower << 1);
5365 signed_addend = addend;
5368 /* Handle calls via the PLT. */
5369 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
5371 value = (splt->output_section->vma
5372 + splt->output_offset
5374 /* Target the Thumb stub before the ARM PLT entry. */
5375 value -= PLT_THUMB_STUB_SIZE;
5376 *unresolved_reloc_p = FALSE;
5379 /* ??? Should handle interworking? GCC might someday try to
5380 use this for tail calls. */
5382 relocation = value + signed_addend;
5383 relocation -= (input_section->output_section->vma
5384 + input_section->output_offset
5386 signed_check = (bfd_signed_vma) relocation;
5388 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
5391 /* Put RELOCATION back into the insn. */
5393 bfd_vma S = (relocation & 0x00100000) >> 20;
5394 bfd_vma J2 = (relocation & 0x00080000) >> 19;
5395 bfd_vma J1 = (relocation & 0x00040000) >> 18;
5396 bfd_vma hi = (relocation & 0x0003f000) >> 12;
5397 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
5399 upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi;
5400 lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
5403 /* Put the relocated value back in the object file: */
5404 bfd_put_16 (input_bfd, upper_insn, hit_data);
5405 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
5407 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
5410 case R_ARM_THM_JUMP11:
5411 case R_ARM_THM_JUMP8:
5412 case R_ARM_THM_JUMP6:
5413 /* Thumb B (branch) instruction). */
5415 bfd_signed_vma relocation;
5416 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
5417 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
5418 bfd_signed_vma signed_check;
5420 /* CZB cannot jump backward. */
5421 if (r_type == R_ARM_THM_JUMP6)
5422 reloc_signed_min = 0;
5424 if (globals->use_rel)
5426 /* Need to refetch addend. */
5427 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
5428 if (addend & ((howto->src_mask + 1) >> 1))
5431 signed_addend &= ~ howto->src_mask;
5432 signed_addend |= addend;
5435 signed_addend = addend;
5436 /* The value in the insn has been right shifted. We need to
5437 undo this, so that we can perform the address calculation
5438 in terms of bytes. */
5439 signed_addend <<= howto->rightshift;
5441 relocation = value + signed_addend;
5443 relocation -= (input_section->output_section->vma
5444 + input_section->output_offset
5447 relocation >>= howto->rightshift;
5448 signed_check = relocation;
5450 if (r_type == R_ARM_THM_JUMP6)
5451 relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
5453 relocation &= howto->dst_mask;
5454 relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
5456 bfd_put_16 (input_bfd, relocation, hit_data);
5458 /* Assumes two's complement. */
5459 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
5460 return bfd_reloc_overflow;
5462 return bfd_reloc_ok;
5465 case R_ARM_ALU_PCREL7_0:
5466 case R_ARM_ALU_PCREL15_8:
5467 case R_ARM_ALU_PCREL23_15:
5472 insn = bfd_get_32 (input_bfd, hit_data);
5473 if (globals->use_rel)
5475 /* Extract the addend. */
5476 addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
5477 signed_addend = addend;
5479 relocation = value + signed_addend;
5481 relocation -= (input_section->output_section->vma
5482 + input_section->output_offset
5484 insn = (insn & ~0xfff)
5485 | ((howto->bitpos << 7) & 0xf00)
5486 | ((relocation >> howto->bitpos) & 0xff);
5487 bfd_put_32 (input_bfd, value, hit_data);
5489 return bfd_reloc_ok;
5491 case R_ARM_GNU_VTINHERIT:
5492 case R_ARM_GNU_VTENTRY:
5493 return bfd_reloc_ok;
5495 case R_ARM_GOTOFF32:
5496 /* Relocation is relative to the start of the
5497 global offset table. */
5499 BFD_ASSERT (sgot != NULL);
5501 return bfd_reloc_notsupported;
5503 /* If we are addressing a Thumb function, we need to adjust the
5504 address by one, so that attempts to call the function pointer will
5505 correctly interpret it as Thumb code. */
5506 if (sym_flags == STT_ARM_TFUNC)
5509 /* Note that sgot->output_offset is not involved in this
5510 calculation. We always want the start of .got. If we
5511 define _GLOBAL_OFFSET_TABLE in a different way, as is
5512 permitted by the ABI, we might have to change this
5514 value -= sgot->output_section->vma;
5515 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5516 contents, rel->r_offset, value,
5520 /* Use global offset table as symbol value. */
5521 BFD_ASSERT (sgot != NULL);
5524 return bfd_reloc_notsupported;
5526 *unresolved_reloc_p = FALSE;
5527 value = sgot->output_section->vma;
5528 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5529 contents, rel->r_offset, value,
5533 case R_ARM_GOT_PREL:
5534 /* Relocation is to the entry for this symbol in the
5535 global offset table. */
5537 return bfd_reloc_notsupported;
5544 off = h->got.offset;
5545 BFD_ASSERT (off != (bfd_vma) -1);
5546 dyn = globals->root.dynamic_sections_created;
5548 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5550 && SYMBOL_REFERENCES_LOCAL (info, h))
5551 || (ELF_ST_VISIBILITY (h->other)
5552 && h->root.type == bfd_link_hash_undefweak))
5554 /* This is actually a static link, or it is a -Bsymbolic link
5555 and the symbol is defined locally. We must initialize this
5556 entry in the global offset table. Since the offset must
5557 always be a multiple of 4, we use the least significant bit
5558 to record whether we have initialized it already.
5560 When doing a dynamic link, we create a .rel(a).got relocation
5561 entry to initialize the value. This is done in the
5562 finish_dynamic_symbol routine. */
5567 /* If we are addressing a Thumb function, we need to
5568 adjust the address by one, so that attempts to
5569 call the function pointer will correctly
5570 interpret it as Thumb code. */
5571 if (sym_flags == STT_ARM_TFUNC)
5574 bfd_put_32 (output_bfd, value, sgot->contents + off);
5579 *unresolved_reloc_p = FALSE;
5581 value = sgot->output_offset + off;
5587 BFD_ASSERT (local_got_offsets != NULL &&
5588 local_got_offsets[r_symndx] != (bfd_vma) -1);
5590 off = local_got_offsets[r_symndx];
5592 /* The offset must always be a multiple of 4. We use the
5593 least significant bit to record whether we have already
5594 generated the necessary reloc. */
5599 /* If we are addressing a Thumb function, we need to
5600 adjust the address by one, so that attempts to
5601 call the function pointer will correctly
5602 interpret it as Thumb code. */
5603 if (sym_flags == STT_ARM_TFUNC)
5606 if (globals->use_rel)
5607 bfd_put_32 (output_bfd, value, sgot->contents + off);
5612 Elf_Internal_Rela outrel;
5615 srelgot = (bfd_get_section_by_name
5616 (dynobj, RELOC_SECTION (globals, ".got")));
5617 BFD_ASSERT (srelgot != NULL);
5619 outrel.r_addend = addend + value;
5620 outrel.r_offset = (sgot->output_section->vma
5621 + sgot->output_offset
5623 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
5624 loc = srelgot->contents;
5625 loc += srelgot->reloc_count++ * RELOC_SIZE (globals);
5626 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
5629 local_got_offsets[r_symndx] |= 1;
5632 value = sgot->output_offset + off;
5634 if (r_type != R_ARM_GOT32)
5635 value += sgot->output_section->vma;
5637 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5638 contents, rel->r_offset, value,
5641 case R_ARM_TLS_LDO32:
5642 value = value - dtpoff_base (info);
5644 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5645 contents, rel->r_offset, value,
5648 case R_ARM_TLS_LDM32:
5652 if (globals->sgot == NULL)
5655 off = globals->tls_ldm_got.offset;
5661 /* If we don't know the module number, create a relocation
5665 Elf_Internal_Rela outrel;
5668 if (globals->srelgot == NULL)
5671 outrel.r_addend = 0;
5672 outrel.r_offset = (globals->sgot->output_section->vma
5673 + globals->sgot->output_offset + off);
5674 outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
5676 if (globals->use_rel)
5677 bfd_put_32 (output_bfd, outrel.r_addend,
5678 globals->sgot->contents + off);
5680 loc = globals->srelgot->contents;
5681 loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals);
5682 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
5685 bfd_put_32 (output_bfd, 1, globals->sgot->contents + off);
5687 globals->tls_ldm_got.offset |= 1;
5690 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
5691 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
5693 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5694 contents, rel->r_offset, value,
5698 case R_ARM_TLS_GD32:
5699 case R_ARM_TLS_IE32:
5705 if (globals->sgot == NULL)
5712 dyn = globals->root.dynamic_sections_created;
5713 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5715 || !SYMBOL_REFERENCES_LOCAL (info, h)))
5717 *unresolved_reloc_p = FALSE;
5720 off = h->got.offset;
5721 tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
5725 if (local_got_offsets == NULL)
5727 off = local_got_offsets[r_symndx];
5728 tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
5731 if (tls_type == GOT_UNKNOWN)
5738 bfd_boolean need_relocs = FALSE;
5739 Elf_Internal_Rela outrel;
5740 bfd_byte *loc = NULL;
5743 /* The GOT entries have not been initialized yet. Do it
5744 now, and emit any relocations. If both an IE GOT and a
5745 GD GOT are necessary, we emit the GD first. */
5747 if ((info->shared || indx != 0)
5749 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5750 || h->root.type != bfd_link_hash_undefweak))
5753 if (globals->srelgot == NULL)
5755 loc = globals->srelgot->contents;
5756 loc += globals->srelgot->reloc_count * RELOC_SIZE (globals);
5759 if (tls_type & GOT_TLS_GD)
5763 outrel.r_addend = 0;
5764 outrel.r_offset = (globals->sgot->output_section->vma
5765 + globals->sgot->output_offset
5767 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
5769 if (globals->use_rel)
5770 bfd_put_32 (output_bfd, outrel.r_addend,
5771 globals->sgot->contents + cur_off);
5773 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
5774 globals->srelgot->reloc_count++;
5775 loc += RELOC_SIZE (globals);
5778 bfd_put_32 (output_bfd, value - dtpoff_base (info),
5779 globals->sgot->contents + cur_off + 4);
5782 outrel.r_addend = 0;
5783 outrel.r_info = ELF32_R_INFO (indx,
5784 R_ARM_TLS_DTPOFF32);
5785 outrel.r_offset += 4;
5787 if (globals->use_rel)
5788 bfd_put_32 (output_bfd, outrel.r_addend,
5789 globals->sgot->contents + cur_off + 4);
5792 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
5793 globals->srelgot->reloc_count++;
5794 loc += RELOC_SIZE (globals);
5799 /* If we are not emitting relocations for a
5800 general dynamic reference, then we must be in a
5801 static link or an executable link with the
5802 symbol binding locally. Mark it as belonging
5803 to module 1, the executable. */
5804 bfd_put_32 (output_bfd, 1,
5805 globals->sgot->contents + cur_off);
5806 bfd_put_32 (output_bfd, value - dtpoff_base (info),
5807 globals->sgot->contents + cur_off + 4);
5813 if (tls_type & GOT_TLS_IE)
5818 outrel.r_addend = value - dtpoff_base (info);
5820 outrel.r_addend = 0;
5821 outrel.r_offset = (globals->sgot->output_section->vma
5822 + globals->sgot->output_offset
5824 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
5826 if (globals->use_rel)
5827 bfd_put_32 (output_bfd, outrel.r_addend,
5828 globals->sgot->contents + cur_off);
5830 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
5831 globals->srelgot->reloc_count++;
5832 loc += RELOC_SIZE (globals);
5835 bfd_put_32 (output_bfd, tpoff (info, value),
5836 globals->sgot->contents + cur_off);
5843 local_got_offsets[r_symndx] |= 1;
5846 if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
5848 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
5849 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
5851 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5852 contents, rel->r_offset, value,
5856 case R_ARM_TLS_LE32:
5859 (*_bfd_error_handler)
5860 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
5861 input_bfd, input_section,
5862 (long) rel->r_offset, howto->name);
5866 value = tpoff (info, value);
5868 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5869 contents, rel->r_offset, value,
5873 if (globals->fix_v4bx)
5875 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5877 /* Ensure that we have a BX instruction. */
5878 BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
5880 if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf)
5882 /* Branch to veneer. */
5884 glue_addr = elf32_arm_bx_glue (info, insn & 0xf);
5885 glue_addr -= input_section->output_section->vma
5886 + input_section->output_offset
5887 + rel->r_offset + 8;
5888 insn = (insn & 0xf0000000) | 0x0a000000
5889 | ((glue_addr >> 2) & 0x00ffffff);
5893 /* Preserve Rm (lowest four bits) and the condition code
5894 (highest four bits). Other bits encode MOV PC,Rm. */
5895 insn = (insn & 0xf000000f) | 0x01a0f000;
5898 bfd_put_32 (input_bfd, insn, hit_data);
5900 return bfd_reloc_ok;
5902 case R_ARM_MOVW_ABS_NC:
5903 case R_ARM_MOVT_ABS:
5904 case R_ARM_MOVW_PREL_NC:
5905 case R_ARM_MOVT_PREL:
5906 /* Until we properly support segment-base-relative addressing then
5907 we assume the segment base to be zero, as for the group relocations.
5908 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
5909 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
5910 case R_ARM_MOVW_BREL_NC:
5911 case R_ARM_MOVW_BREL:
5912 case R_ARM_MOVT_BREL:
5914 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5916 if (globals->use_rel)
5918 addend = ((insn >> 4) & 0xf000) | (insn & 0xfff);
5919 signed_addend = (addend ^ 0x8000) - 0x8000;
5922 value += signed_addend;
5924 if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL)
5925 value -= (input_section->output_section->vma
5926 + input_section->output_offset + rel->r_offset);
5928 if (r_type == R_ARM_MOVW_BREL && value >= 0x10000)
5929 return bfd_reloc_overflow;
5931 if (sym_flags == STT_ARM_TFUNC)
5934 if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL
5935 || r_type == R_ARM_MOVT_BREL)
5939 insn |= value & 0xfff;
5940 insn |= (value & 0xf000) << 4;
5941 bfd_put_32 (input_bfd, insn, hit_data);
5943 return bfd_reloc_ok;
5945 case R_ARM_THM_MOVW_ABS_NC:
5946 case R_ARM_THM_MOVT_ABS:
5947 case R_ARM_THM_MOVW_PREL_NC:
5948 case R_ARM_THM_MOVT_PREL:
5949 /* Until we properly support segment-base-relative addressing then
5950 we assume the segment base to be zero, as for the above relocations.
5951 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
5952 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
5953 as R_ARM_THM_MOVT_ABS. */
5954 case R_ARM_THM_MOVW_BREL_NC:
5955 case R_ARM_THM_MOVW_BREL:
5956 case R_ARM_THM_MOVT_BREL:
5960 insn = bfd_get_16 (input_bfd, hit_data) << 16;
5961 insn |= bfd_get_16 (input_bfd, hit_data + 2);
5963 if (globals->use_rel)
5965 addend = ((insn >> 4) & 0xf000)
5966 | ((insn >> 15) & 0x0800)
5967 | ((insn >> 4) & 0x0700)
5969 signed_addend = (addend ^ 0x8000) - 0x8000;
5972 value += signed_addend;
5974 if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL)
5975 value -= (input_section->output_section->vma
5976 + input_section->output_offset + rel->r_offset);
5978 if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000)
5979 return bfd_reloc_overflow;
5981 if (sym_flags == STT_ARM_TFUNC)
5984 if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL
5985 || r_type == R_ARM_THM_MOVT_BREL)
5989 insn |= (value & 0xf000) << 4;
5990 insn |= (value & 0x0800) << 15;
5991 insn |= (value & 0x0700) << 4;
5992 insn |= (value & 0x00ff);
5994 bfd_put_16 (input_bfd, insn >> 16, hit_data);
5995 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
5997 return bfd_reloc_ok;
5999 case R_ARM_ALU_PC_G0_NC:
6000 case R_ARM_ALU_PC_G1_NC:
6001 case R_ARM_ALU_PC_G0:
6002 case R_ARM_ALU_PC_G1:
6003 case R_ARM_ALU_PC_G2:
6004 case R_ARM_ALU_SB_G0_NC:
6005 case R_ARM_ALU_SB_G1_NC:
6006 case R_ARM_ALU_SB_G0:
6007 case R_ARM_ALU_SB_G1:
6008 case R_ARM_ALU_SB_G2:
6010 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
6011 bfd_vma pc = input_section->output_section->vma
6012 + input_section->output_offset + rel->r_offset;
6013 /* sb should be the origin of the *segment* containing the symbol.
6014 It is not clear how to obtain this OS-dependent value, so we
6015 make an arbitrary choice of zero. */
6019 bfd_signed_vma signed_value;
6022 /* Determine which group of bits to select. */
6025 case R_ARM_ALU_PC_G0_NC:
6026 case R_ARM_ALU_PC_G0:
6027 case R_ARM_ALU_SB_G0_NC:
6028 case R_ARM_ALU_SB_G0:
6032 case R_ARM_ALU_PC_G1_NC:
6033 case R_ARM_ALU_PC_G1:
6034 case R_ARM_ALU_SB_G1_NC:
6035 case R_ARM_ALU_SB_G1:
6039 case R_ARM_ALU_PC_G2:
6040 case R_ARM_ALU_SB_G2:
6048 /* If REL, extract the addend from the insn. If RELA, it will
6049 have already been fetched for us. */
6050 if (globals->use_rel)
6053 bfd_vma constant = insn & 0xff;
6054 bfd_vma rotation = (insn & 0xf00) >> 8;
6057 signed_addend = constant;
6060 /* Compensate for the fact that in the instruction, the
6061 rotation is stored in multiples of 2 bits. */
6064 /* Rotate "constant" right by "rotation" bits. */
6065 signed_addend = (constant >> rotation) |
6066 (constant << (8 * sizeof (bfd_vma) - rotation));
6069 /* Determine if the instruction is an ADD or a SUB.
6070 (For REL, this determines the sign of the addend.) */
6071 negative = identify_add_or_sub (insn);
6074 (*_bfd_error_handler)
6075 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
6076 input_bfd, input_section,
6077 (long) rel->r_offset, howto->name);
6078 return bfd_reloc_overflow;
6081 signed_addend *= negative;
6084 /* Compute the value (X) to go in the place. */
6085 if (r_type == R_ARM_ALU_PC_G0_NC
6086 || r_type == R_ARM_ALU_PC_G1_NC
6087 || r_type == R_ARM_ALU_PC_G0
6088 || r_type == R_ARM_ALU_PC_G1
6089 || r_type == R_ARM_ALU_PC_G2)
6091 signed_value = value - pc + signed_addend;
6093 /* Section base relative. */
6094 signed_value = value - sb + signed_addend;
6096 /* If the target symbol is a Thumb function, then set the
6097 Thumb bit in the address. */
6098 if (sym_flags == STT_ARM_TFUNC)
6101 /* Calculate the value of the relevant G_n, in encoded
6102 constant-with-rotation format. */
6103 g_n = calculate_group_reloc_mask (abs (signed_value), group,
6106 /* Check for overflow if required. */
6107 if ((r_type == R_ARM_ALU_PC_G0
6108 || r_type == R_ARM_ALU_PC_G1
6109 || r_type == R_ARM_ALU_PC_G2
6110 || r_type == R_ARM_ALU_SB_G0
6111 || r_type == R_ARM_ALU_SB_G1
6112 || r_type == R_ARM_ALU_SB_G2) && residual != 0)
6114 (*_bfd_error_handler)
6115 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6116 input_bfd, input_section,
6117 (long) rel->r_offset, abs (signed_value), howto->name);
6118 return bfd_reloc_overflow;
6121 /* Mask out the value and the ADD/SUB part of the opcode; take care
6122 not to destroy the S bit. */
6125 /* Set the opcode according to whether the value to go in the
6126 place is negative. */
6127 if (signed_value < 0)
6132 /* Encode the offset. */
6135 bfd_put_32 (input_bfd, insn, hit_data);
6137 return bfd_reloc_ok;
6139 case R_ARM_LDR_PC_G0:
6140 case R_ARM_LDR_PC_G1:
6141 case R_ARM_LDR_PC_G2:
6142 case R_ARM_LDR_SB_G0:
6143 case R_ARM_LDR_SB_G1:
6144 case R_ARM_LDR_SB_G2:
6146 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
6147 bfd_vma pc = input_section->output_section->vma
6148 + input_section->output_offset + rel->r_offset;
6149 bfd_vma sb = 0; /* See note above. */
6151 bfd_signed_vma signed_value;
6154 /* Determine which groups of bits to calculate. */
6157 case R_ARM_LDR_PC_G0:
6158 case R_ARM_LDR_SB_G0:
6162 case R_ARM_LDR_PC_G1:
6163 case R_ARM_LDR_SB_G1:
6167 case R_ARM_LDR_PC_G2:
6168 case R_ARM_LDR_SB_G2:
6176 /* If REL, extract the addend from the insn. If RELA, it will
6177 have already been fetched for us. */
6178 if (globals->use_rel)
6180 int negative = (insn & (1 << 23)) ? 1 : -1;
6181 signed_addend = negative * (insn & 0xfff);
6184 /* Compute the value (X) to go in the place. */
6185 if (r_type == R_ARM_LDR_PC_G0
6186 || r_type == R_ARM_LDR_PC_G1
6187 || r_type == R_ARM_LDR_PC_G2)
6189 signed_value = value - pc + signed_addend;
6191 /* Section base relative. */
6192 signed_value = value - sb + signed_addend;
6194 /* Calculate the value of the relevant G_{n-1} to obtain
6195 the residual at that stage. */
6196 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
6198 /* Check for overflow. */
6199 if (residual >= 0x1000)
6201 (*_bfd_error_handler)
6202 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6203 input_bfd, input_section,
6204 (long) rel->r_offset, abs (signed_value), howto->name);
6205 return bfd_reloc_overflow;
6208 /* Mask out the value and U bit. */
6211 /* Set the U bit if the value to go in the place is non-negative. */
6212 if (signed_value >= 0)
6215 /* Encode the offset. */
6218 bfd_put_32 (input_bfd, insn, hit_data);
6220 return bfd_reloc_ok;
6222 case R_ARM_LDRS_PC_G0:
6223 case R_ARM_LDRS_PC_G1:
6224 case R_ARM_LDRS_PC_G2:
6225 case R_ARM_LDRS_SB_G0:
6226 case R_ARM_LDRS_SB_G1:
6227 case R_ARM_LDRS_SB_G2:
6229 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
6230 bfd_vma pc = input_section->output_section->vma
6231 + input_section->output_offset + rel->r_offset;
6232 bfd_vma sb = 0; /* See note above. */
6234 bfd_signed_vma signed_value;
6237 /* Determine which groups of bits to calculate. */
6240 case R_ARM_LDRS_PC_G0:
6241 case R_ARM_LDRS_SB_G0:
6245 case R_ARM_LDRS_PC_G1:
6246 case R_ARM_LDRS_SB_G1:
6250 case R_ARM_LDRS_PC_G2:
6251 case R_ARM_LDRS_SB_G2:
6259 /* If REL, extract the addend from the insn. If RELA, it will
6260 have already been fetched for us. */
6261 if (globals->use_rel)
6263 int negative = (insn & (1 << 23)) ? 1 : -1;
6264 signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf));
6267 /* Compute the value (X) to go in the place. */
6268 if (r_type == R_ARM_LDRS_PC_G0
6269 || r_type == R_ARM_LDRS_PC_G1
6270 || r_type == R_ARM_LDRS_PC_G2)
6272 signed_value = value - pc + signed_addend;
6274 /* Section base relative. */
6275 signed_value = value - sb + signed_addend;
6277 /* Calculate the value of the relevant G_{n-1} to obtain
6278 the residual at that stage. */
6279 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
6281 /* Check for overflow. */
6282 if (residual >= 0x100)
6284 (*_bfd_error_handler)
6285 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6286 input_bfd, input_section,
6287 (long) rel->r_offset, abs (signed_value), howto->name);
6288 return bfd_reloc_overflow;
6291 /* Mask out the value and U bit. */
6294 /* Set the U bit if the value to go in the place is non-negative. */
6295 if (signed_value >= 0)
6298 /* Encode the offset. */
6299 insn |= ((residual & 0xf0) << 4) | (residual & 0xf);
6301 bfd_put_32 (input_bfd, insn, hit_data);
6303 return bfd_reloc_ok;
6305 case R_ARM_LDC_PC_G0:
6306 case R_ARM_LDC_PC_G1:
6307 case R_ARM_LDC_PC_G2:
6308 case R_ARM_LDC_SB_G0:
6309 case R_ARM_LDC_SB_G1:
6310 case R_ARM_LDC_SB_G2:
6312 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
6313 bfd_vma pc = input_section->output_section->vma
6314 + input_section->output_offset + rel->r_offset;
6315 bfd_vma sb = 0; /* See note above. */
6317 bfd_signed_vma signed_value;
6320 /* Determine which groups of bits to calculate. */
6323 case R_ARM_LDC_PC_G0:
6324 case R_ARM_LDC_SB_G0:
6328 case R_ARM_LDC_PC_G1:
6329 case R_ARM_LDC_SB_G1:
6333 case R_ARM_LDC_PC_G2:
6334 case R_ARM_LDC_SB_G2:
6342 /* If REL, extract the addend from the insn. If RELA, it will
6343 have already been fetched for us. */
6344 if (globals->use_rel)
6346 int negative = (insn & (1 << 23)) ? 1 : -1;
6347 signed_addend = negative * ((insn & 0xff) << 2);
6350 /* Compute the value (X) to go in the place. */
6351 if (r_type == R_ARM_LDC_PC_G0
6352 || r_type == R_ARM_LDC_PC_G1
6353 || r_type == R_ARM_LDC_PC_G2)
6355 signed_value = value - pc + signed_addend;
6357 /* Section base relative. */
6358 signed_value = value - sb + signed_addend;
6360 /* Calculate the value of the relevant G_{n-1} to obtain
6361 the residual at that stage. */
6362 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
6364 /* Check for overflow. (The absolute value to go in the place must be
6365 divisible by four and, after having been divided by four, must
6366 fit in eight bits.) */
6367 if ((residual & 0x3) != 0 || residual >= 0x400)
6369 (*_bfd_error_handler)
6370 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6371 input_bfd, input_section,
6372 (long) rel->r_offset, abs (signed_value), howto->name);
6373 return bfd_reloc_overflow;
6376 /* Mask out the value and U bit. */
6379 /* Set the U bit if the value to go in the place is non-negative. */
6380 if (signed_value >= 0)
6383 /* Encode the offset. */
6384 insn |= residual >> 2;
6386 bfd_put_32 (input_bfd, insn, hit_data);
6388 return bfd_reloc_ok;
6391 return bfd_reloc_notsupported;
6395 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
6397 arm_add_to_rel (bfd * abfd,
6399 reloc_howto_type * howto,
6400 bfd_signed_vma increment)
6402 bfd_signed_vma addend;
6404 if (howto->type == R_ARM_THM_CALL
6405 || howto->type == R_ARM_THM_JUMP24)
6407 int upper_insn, lower_insn;
6410 upper_insn = bfd_get_16 (abfd, address);
6411 lower_insn = bfd_get_16 (abfd, address + 2);
6412 upper = upper_insn & 0x7ff;
6413 lower = lower_insn & 0x7ff;
6415 addend = (upper << 12) | (lower << 1);
6416 addend += increment;
6419 upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
6420 lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
6422 bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
6423 bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
6429 contents = bfd_get_32 (abfd, address);
6431 /* Get the (signed) value from the instruction. */
6432 addend = contents & howto->src_mask;
6433 if (addend & ((howto->src_mask + 1) >> 1))
6435 bfd_signed_vma mask;
6438 mask &= ~ howto->src_mask;
6442 /* Add in the increment, (which is a byte value). */
6443 switch (howto->type)
6446 addend += increment;
6453 addend <<= howto->size;
6454 addend += increment;
6456 /* Should we check for overflow here ? */
6458 /* Drop any undesired bits. */
6459 addend >>= howto->rightshift;
6463 contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
6465 bfd_put_32 (abfd, contents, address);
6469 #define IS_ARM_TLS_RELOC(R_TYPE) \
6470 ((R_TYPE) == R_ARM_TLS_GD32 \
6471 || (R_TYPE) == R_ARM_TLS_LDO32 \
6472 || (R_TYPE) == R_ARM_TLS_LDM32 \
6473 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
6474 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
6475 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
6476 || (R_TYPE) == R_ARM_TLS_LE32 \
6477 || (R_TYPE) == R_ARM_TLS_IE32)
6479 /* Relocate an ARM ELF section. */
6481 elf32_arm_relocate_section (bfd * output_bfd,
6482 struct bfd_link_info * info,
6484 asection * input_section,
6485 bfd_byte * contents,
6486 Elf_Internal_Rela * relocs,
6487 Elf_Internal_Sym * local_syms,
6488 asection ** local_sections)
6490 Elf_Internal_Shdr *symtab_hdr;
6491 struct elf_link_hash_entry **sym_hashes;
6492 Elf_Internal_Rela *rel;
6493 Elf_Internal_Rela *relend;
6495 struct elf32_arm_link_hash_table * globals;
6497 globals = elf32_arm_hash_table (info);
6499 symtab_hdr = & elf_symtab_hdr (input_bfd);
6500 sym_hashes = elf_sym_hashes (input_bfd);
6503 relend = relocs + input_section->reloc_count;
6504 for (; rel < relend; rel++)
6507 reloc_howto_type * howto;
6508 unsigned long r_symndx;
6509 Elf_Internal_Sym * sym;
6511 struct elf_link_hash_entry * h;
6513 bfd_reloc_status_type r;
6516 bfd_boolean unresolved_reloc = FALSE;
6517 char *error_message = NULL;
6519 r_symndx = ELF32_R_SYM (rel->r_info);
6520 r_type = ELF32_R_TYPE (rel->r_info);
6521 r_type = arm_real_reloc_type (globals, r_type);
6523 if ( r_type == R_ARM_GNU_VTENTRY
6524 || r_type == R_ARM_GNU_VTINHERIT)
6527 bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
6528 howto = bfd_reloc.howto;
6534 if (r_symndx < symtab_hdr->sh_info)
6536 sym = local_syms + r_symndx;
6537 sym_type = ELF32_ST_TYPE (sym->st_info);
6538 sec = local_sections[r_symndx];
6539 if (globals->use_rel)
6541 relocation = (sec->output_section->vma
6542 + sec->output_offset
6544 if (!info->relocatable
6545 && (sec->flags & SEC_MERGE)
6546 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
6549 bfd_vma addend, value;
6553 case R_ARM_MOVW_ABS_NC:
6554 case R_ARM_MOVT_ABS:
6555 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
6556 addend = ((value & 0xf0000) >> 4) | (value & 0xfff);
6557 addend = (addend ^ 0x8000) - 0x8000;
6560 case R_ARM_THM_MOVW_ABS_NC:
6561 case R_ARM_THM_MOVT_ABS:
6562 value = bfd_get_16 (input_bfd, contents + rel->r_offset)
6564 value |= bfd_get_16 (input_bfd,
6565 contents + rel->r_offset + 2);
6566 addend = ((value & 0xf7000) >> 4) | (value & 0xff)
6567 | ((value & 0x04000000) >> 15);
6568 addend = (addend ^ 0x8000) - 0x8000;
6572 if (howto->rightshift
6573 || (howto->src_mask & (howto->src_mask + 1)))
6575 (*_bfd_error_handler)
6576 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
6577 input_bfd, input_section,
6578 (long) rel->r_offset, howto->name);
6582 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
6584 /* Get the (signed) value from the instruction. */
6585 addend = value & howto->src_mask;
6586 if (addend & ((howto->src_mask + 1) >> 1))
6588 bfd_signed_vma mask;
6591 mask &= ~ howto->src_mask;
6599 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
6601 addend += msec->output_section->vma + msec->output_offset;
6603 /* Cases here must match those in the preceeding
6604 switch statement. */
6607 case R_ARM_MOVW_ABS_NC:
6608 case R_ARM_MOVT_ABS:
6609 value = (value & 0xfff0f000) | ((addend & 0xf000) << 4)
6611 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
6614 case R_ARM_THM_MOVW_ABS_NC:
6615 case R_ARM_THM_MOVT_ABS:
6616 value = (value & 0xfbf08f00) | ((addend & 0xf700) << 4)
6617 | (addend & 0xff) | ((addend & 0x0800) << 15);
6618 bfd_put_16 (input_bfd, value >> 16,
6619 contents + rel->r_offset);
6620 bfd_put_16 (input_bfd, value,
6621 contents + rel->r_offset + 2);
6625 value = (value & ~ howto->dst_mask)
6626 | (addend & howto->dst_mask);
6627 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
6633 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6639 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6640 r_symndx, symtab_hdr, sym_hashes,
6642 unresolved_reloc, warned);
6647 if (sec != NULL && elf_discarded_section (sec))
6649 /* For relocs against symbols from removed linkonce sections,
6650 or sections discarded by a linker script, we just want the
6651 section contents zeroed. Avoid any special processing. */
6652 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6658 if (info->relocatable)
6660 /* This is a relocatable link. We don't have to change
6661 anything, unless the reloc is against a section symbol,
6662 in which case we have to adjust according to where the
6663 section symbol winds up in the output section. */
6664 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
6666 if (globals->use_rel)
6667 arm_add_to_rel (input_bfd, contents + rel->r_offset,
6668 howto, (bfd_signed_vma) sec->output_offset);
6670 rel->r_addend += sec->output_offset;
6676 name = h->root.root.string;
6679 name = (bfd_elf_string_from_elf_section
6680 (input_bfd, symtab_hdr->sh_link, sym->st_name));
6681 if (name == NULL || *name == '\0')
6682 name = bfd_section_name (input_bfd, sec);
6686 && r_type != R_ARM_NONE
6688 || h->root.type == bfd_link_hash_defined
6689 || h->root.type == bfd_link_hash_defweak)
6690 && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
6692 (*_bfd_error_handler)
6693 ((sym_type == STT_TLS
6694 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
6695 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
6698 (long) rel->r_offset,
6703 r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
6704 input_section, contents, rel,
6705 relocation, info, sec, name,
6706 (h ? ELF_ST_TYPE (h->type) :
6707 ELF_ST_TYPE (sym->st_info)), h,
6708 &unresolved_reloc, &error_message);
6710 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
6711 because such sections are not SEC_ALLOC and thus ld.so will
6712 not process them. */
6713 if (unresolved_reloc
6714 && !((input_section->flags & SEC_DEBUGGING) != 0
6717 (*_bfd_error_handler)
6718 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6721 (long) rel->r_offset,
6723 h->root.root.string);
6727 if (r != bfd_reloc_ok)
6731 case bfd_reloc_overflow:
6732 /* If the overflowing reloc was to an undefined symbol,
6733 we have already printed one error message and there
6734 is no point complaining again. */
6736 h->root.type != bfd_link_hash_undefined)
6737 && (!((*info->callbacks->reloc_overflow)
6738 (info, (h ? &h->root : NULL), name, howto->name,
6739 (bfd_vma) 0, input_bfd, input_section,
6744 case bfd_reloc_undefined:
6745 if (!((*info->callbacks->undefined_symbol)
6746 (info, name, input_bfd, input_section,
6747 rel->r_offset, TRUE)))
6751 case bfd_reloc_outofrange:
6752 error_message = _("out of range");
6755 case bfd_reloc_notsupported:
6756 error_message = _("unsupported relocation");
6759 case bfd_reloc_dangerous:
6760 /* error_message should already be set. */
6764 error_message = _("unknown error");
6768 BFD_ASSERT (error_message != NULL);
6769 if (!((*info->callbacks->reloc_dangerous)
6770 (info, error_message, input_bfd, input_section,
6781 /* Set the right machine number. */
6784 elf32_arm_object_p (bfd *abfd)
6788 mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
6790 if (mach != bfd_mach_arm_unknown)
6791 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
6793 else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
6794 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
6797 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
6802 /* Function to keep ARM specific flags in the ELF header. */
6805 elf32_arm_set_private_flags (bfd *abfd, flagword flags)
6807 if (elf_flags_init (abfd)
6808 && elf_elfheader (abfd)->e_flags != flags)
6810 if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
6812 if (flags & EF_ARM_INTERWORK)
6813 (*_bfd_error_handler)
6814 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
6818 (_("Warning: Clearing the interworking flag of %B due to outside request"),
6824 elf_elfheader (abfd)->e_flags = flags;
6825 elf_flags_init (abfd) = TRUE;
6831 /* Copy backend specific data from one object module to another. */
6834 elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
6839 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
6842 in_flags = elf_elfheader (ibfd)->e_flags;
6843 out_flags = elf_elfheader (obfd)->e_flags;
6845 if (elf_flags_init (obfd)
6846 && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
6847 && in_flags != out_flags)
6849 /* Cannot mix APCS26 and APCS32 code. */
6850 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
6853 /* Cannot mix float APCS and non-float APCS code. */
6854 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
6857 /* If the src and dest have different interworking flags
6858 then turn off the interworking bit. */
6859 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
6861 if (out_flags & EF_ARM_INTERWORK)
6863 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
6866 in_flags &= ~EF_ARM_INTERWORK;
6869 /* Likewise for PIC, though don't warn for this case. */
6870 if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
6871 in_flags &= ~EF_ARM_PIC;
6874 elf_elfheader (obfd)->e_flags = in_flags;
6875 elf_flags_init (obfd) = TRUE;
6877 /* Also copy the EI_OSABI field. */
6878 elf_elfheader (obfd)->e_ident[EI_OSABI] =
6879 elf_elfheader (ibfd)->e_ident[EI_OSABI];
6881 /* Copy object attributes. */
6882 _bfd_elf_copy_obj_attributes (ibfd, obfd);
6887 /* Values for Tag_ABI_PCS_R9_use. */
6896 /* Values for Tag_ABI_PCS_RW_data. */
6899 AEABI_PCS_RW_data_absolute,
6900 AEABI_PCS_RW_data_PCrel,
6901 AEABI_PCS_RW_data_SBrel,
6902 AEABI_PCS_RW_data_unused
6905 /* Values for Tag_ABI_enum_size. */
6911 AEABI_enum_forced_wide
6914 /* Determine whether an object attribute tag takes an integer, a
6917 elf32_arm_obj_attrs_arg_type (int tag)
6919 if (tag == Tag_compatibility)
6921 else if (tag == 4 || tag == 5)
6926 return (tag & 1) != 0 ? 2 : 1;
6929 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
6930 are conflicting attributes. */
6932 elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
6934 obj_attribute *in_attr;
6935 obj_attribute *out_attr;
6936 obj_attribute_list *in_list;
6937 /* Some tags have 0 = don't care, 1 = strong requirement,
6938 2 = weak requirement. */
6939 static const int order_312[3] = {3, 1, 2};
6942 if (!elf_known_obj_attributes_proc (obfd)[0].i)
6944 /* This is the first object. Copy the attributes. */
6945 _bfd_elf_copy_obj_attributes (ibfd, obfd);
6947 /* Use the Tag_null value to indicate the attributes have been
6949 elf_known_obj_attributes_proc (obfd)[0].i = 1;
6954 in_attr = elf_known_obj_attributes_proc (ibfd);
6955 out_attr = elf_known_obj_attributes_proc (obfd);
6956 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
6957 if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i)
6959 /* Ignore mismatches if teh object doesn't use floating point. */
6960 if (out_attr[Tag_ABI_FP_number_model].i == 0)
6961 out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i;
6962 else if (in_attr[Tag_ABI_FP_number_model].i != 0)
6965 (_("ERROR: %B uses VFP register arguments, %B does not"),
6971 for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
6973 /* Merge this attribute with existing attributes. */
6976 case Tag_CPU_raw_name:
6978 /* Use whichever has the greatest architecture requirements. We
6979 won't necessarily have both the above tags, so make sure input
6980 name is non-NULL. */
6981 if (in_attr[Tag_CPU_arch].i > out_attr[Tag_CPU_arch].i
6983 out_attr[i].s = _bfd_elf_attr_strdup (obfd, in_attr[i].s);
6986 case Tag_ABI_optimization_goals:
6987 case Tag_ABI_FP_optimization_goals:
6988 /* Use the first value seen. */
6992 case Tag_ARM_ISA_use:
6993 case Tag_THUMB_ISA_use:
6997 /* ??? Do NEON and WMMX conflict? */
6998 case Tag_ABI_FP_rounding:
6999 case Tag_ABI_FP_denormal:
7000 case Tag_ABI_FP_exceptions:
7001 case Tag_ABI_FP_user_exceptions:
7002 case Tag_ABI_FP_number_model:
7003 case Tag_ABI_align8_preserved:
7004 case Tag_ABI_HardFP_use:
7005 /* Use the largest value specified. */
7006 if (in_attr[i].i > out_attr[i].i)
7007 out_attr[i].i = in_attr[i].i;
7010 case Tag_CPU_arch_profile:
7011 /* Warn if conflicting architecture profiles used. */
7012 if (out_attr[i].i && in_attr[i].i && in_attr[i].i != out_attr[i].i)
7015 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
7016 ibfd, in_attr[i].i, out_attr[i].i);
7020 out_attr[i].i = in_attr[i].i;
7022 case Tag_PCS_config:
7023 if (out_attr[i].i == 0)
7024 out_attr[i].i = in_attr[i].i;
7025 else if (in_attr[i].i != 0 && out_attr[i].i != 0)
7027 /* It's sometimes ok to mix different configs, so this is only
7030 (_("Warning: %B: Conflicting platform configuration"), ibfd);
7033 case Tag_ABI_PCS_R9_use:
7034 if (in_attr[i].i != out_attr[i].i
7035 && out_attr[i].i != AEABI_R9_unused
7036 && in_attr[i].i != AEABI_R9_unused)
7039 (_("ERROR: %B: Conflicting use of R9"), ibfd);
7042 if (out_attr[i].i == AEABI_R9_unused)
7043 out_attr[i].i = in_attr[i].i;
7045 case Tag_ABI_PCS_RW_data:
7046 if (in_attr[i].i == AEABI_PCS_RW_data_SBrel
7047 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB
7048 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused)
7051 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
7055 /* Use the smallest value specified. */
7056 if (in_attr[i].i < out_attr[i].i)
7057 out_attr[i].i = in_attr[i].i;
7059 case Tag_ABI_PCS_RO_data:
7060 /* Use the smallest value specified. */
7061 if (in_attr[i].i < out_attr[i].i)
7062 out_attr[i].i = in_attr[i].i;
7064 case Tag_ABI_PCS_GOT_use:
7065 if (in_attr[i].i > 2 || out_attr[i].i > 2
7066 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
7067 out_attr[i].i = in_attr[i].i;
7069 case Tag_ABI_PCS_wchar_t:
7070 if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i)
7073 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd);
7077 out_attr[i].i = in_attr[i].i;
7079 case Tag_ABI_align8_needed:
7080 /* ??? Check against Tag_ABI_align8_preserved. */
7081 if (in_attr[i].i > 2 || out_attr[i].i > 2
7082 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
7083 out_attr[i].i = in_attr[i].i;
7085 case Tag_ABI_enum_size:
7086 if (in_attr[i].i != AEABI_enum_unused)
7088 if (out_attr[i].i == AEABI_enum_unused
7089 || out_attr[i].i == AEABI_enum_forced_wide)
7091 /* The existing object is compatible with anything.
7092 Use whatever requirements the new object has. */
7093 out_attr[i].i = in_attr[i].i;
7095 else if (in_attr[i].i != AEABI_enum_forced_wide
7096 && out_attr[i].i != in_attr[i].i
7097 && !elf_arm_tdata (obfd)->no_enum_size_warning)
7099 const char *aeabi_enum_names[] =
7100 { "", "variable-size", "32-bit", "" };
7102 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
7103 ibfd, aeabi_enum_names[in_attr[i].i],
7104 aeabi_enum_names[out_attr[i].i]);
7108 case Tag_ABI_VFP_args:
7111 case Tag_ABI_WMMX_args:
7112 if (in_attr[i].i != out_attr[i].i)
7115 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
7120 default: /* All known attributes should be explicitly covered. */
7124 if (in_attr[i].type && !out_attr[i].type)
7125 switch (in_attr[i].type)
7129 out_attr[i].type = 1;
7134 out_attr[i].type = 2;
7142 /* Merge Tag_compatibility attributes and any common GNU ones. */
7143 _bfd_elf_merge_object_attributes (ibfd, obfd);
7145 /* Check for any attributes not known on ARM. */
7146 in_list = elf_other_obj_attributes_proc (ibfd);
7147 while (in_list && in_list->tag == Tag_compatibility)
7148 in_list = in_list->next;
7150 for (; in_list; in_list = in_list->next)
7152 if ((in_list->tag & 128) < 64)
7155 (_("Warning: %B: Unknown EABI object attribute %d"),
7156 ibfd, in_list->tag);
7164 /* Return TRUE if the two EABI versions are incompatible. */
7167 elf32_arm_versions_compatible (unsigned iver, unsigned over)
7169 /* v4 and v5 are the same spec before and after it was released,
7170 so allow mixing them. */
7171 if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5)
7172 || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4))
7175 return (iver == over);
7178 /* Merge backend specific data from an object file to the output
7179 object file when linking. */
7182 elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
7186 bfd_boolean flags_compatible = TRUE;
7189 /* Check if we have the same endianess. */
7190 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
7193 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
7196 if (!elf32_arm_merge_eabi_attributes (ibfd, obfd))
7199 /* The input BFD must have had its flags initialised. */
7200 /* The following seems bogus to me -- The flags are initialized in
7201 the assembler but I don't think an elf_flags_init field is
7202 written into the object. */
7203 /* BFD_ASSERT (elf_flags_init (ibfd)); */
7205 in_flags = elf_elfheader (ibfd)->e_flags;
7206 out_flags = elf_elfheader (obfd)->e_flags;
7208 if (!elf_flags_init (obfd))
7210 /* If the input is the default architecture and had the default
7211 flags then do not bother setting the flags for the output
7212 architecture, instead allow future merges to do this. If no
7213 future merges ever set these flags then they will retain their
7214 uninitialised values, which surprise surprise, correspond
7215 to the default values. */
7216 if (bfd_get_arch_info (ibfd)->the_default
7217 && elf_elfheader (ibfd)->e_flags == 0)
7220 elf_flags_init (obfd) = TRUE;
7221 elf_elfheader (obfd)->e_flags = in_flags;
7223 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
7224 && bfd_get_arch_info (obfd)->the_default)
7225 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
7230 /* Determine what should happen if the input ARM architecture
7231 does not match the output ARM architecture. */
7232 if (! bfd_arm_merge_machines (ibfd, obfd))
7235 /* Identical flags must be compatible. */
7236 if (in_flags == out_flags)
7239 /* Check to see if the input BFD actually contains any sections. If
7240 not, its flags may not have been initialised either, but it
7241 cannot actually cause any incompatiblity. Do not short-circuit
7242 dynamic objects; their section list may be emptied by
7243 elf_link_add_object_symbols.
7245 Also check to see if there are no code sections in the input.
7246 In this case there is no need to check for code specific flags.
7247 XXX - do we need to worry about floating-point format compatability
7248 in data sections ? */
7249 if (!(ibfd->flags & DYNAMIC))
7251 bfd_boolean null_input_bfd = TRUE;
7252 bfd_boolean only_data_sections = TRUE;
7254 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7256 /* Ignore synthetic glue sections. */
7257 if (strcmp (sec->name, ".glue_7")
7258 && strcmp (sec->name, ".glue_7t"))
7260 if ((bfd_get_section_flags (ibfd, sec)
7261 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
7262 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
7263 only_data_sections = FALSE;
7265 null_input_bfd = FALSE;
7270 if (null_input_bfd || only_data_sections)
7274 /* Complain about various flag mismatches. */
7275 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags),
7276 EF_ARM_EABI_VERSION (out_flags)))
7279 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
7281 (in_flags & EF_ARM_EABIMASK) >> 24,
7282 (out_flags & EF_ARM_EABIMASK) >> 24);
7286 /* Not sure what needs to be checked for EABI versions >= 1. */
7287 /* VxWorks libraries do not use these flags. */
7288 if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed
7289 && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed
7290 && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
7292 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
7295 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
7297 in_flags & EF_ARM_APCS_26 ? 26 : 32,
7298 out_flags & EF_ARM_APCS_26 ? 26 : 32);
7299 flags_compatible = FALSE;
7302 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
7304 if (in_flags & EF_ARM_APCS_FLOAT)
7306 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
7310 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
7313 flags_compatible = FALSE;
7316 if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
7318 if (in_flags & EF_ARM_VFP_FLOAT)
7320 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
7324 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
7327 flags_compatible = FALSE;
7330 if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
7332 if (in_flags & EF_ARM_MAVERICK_FLOAT)
7334 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
7338 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
7341 flags_compatible = FALSE;
7344 #ifdef EF_ARM_SOFT_FLOAT
7345 if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
7347 /* We can allow interworking between code that is VFP format
7348 layout, and uses either soft float or integer regs for
7349 passing floating point arguments and results. We already
7350 know that the APCS_FLOAT flags match; similarly for VFP
7352 if ((in_flags & EF_ARM_APCS_FLOAT) != 0
7353 || (in_flags & EF_ARM_VFP_FLOAT) == 0)
7355 if (in_flags & EF_ARM_SOFT_FLOAT)
7357 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
7361 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
7364 flags_compatible = FALSE;
7369 /* Interworking mismatch is only a warning. */
7370 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
7372 if (in_flags & EF_ARM_INTERWORK)
7375 (_("Warning: %B supports interworking, whereas %B does not"),
7381 (_("Warning: %B does not support interworking, whereas %B does"),
7387 return flags_compatible;
7390 /* Display the flags field. */
7393 elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
7395 FILE * file = (FILE *) ptr;
7396 unsigned long flags;
7398 BFD_ASSERT (abfd != NULL && ptr != NULL);
7400 /* Print normal ELF private data. */
7401 _bfd_elf_print_private_bfd_data (abfd, ptr);
7403 flags = elf_elfheader (abfd)->e_flags;
7404 /* Ignore init flag - it may not be set, despite the flags field
7405 containing valid data. */
7407 /* xgettext:c-format */
7408 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
7410 switch (EF_ARM_EABI_VERSION (flags))
7412 case EF_ARM_EABI_UNKNOWN:
7413 /* The following flag bits are GNU extensions and not part of the
7414 official ARM ELF extended ABI. Hence they are only decoded if
7415 the EABI version is not set. */
7416 if (flags & EF_ARM_INTERWORK)
7417 fprintf (file, _(" [interworking enabled]"));
7419 if (flags & EF_ARM_APCS_26)
7420 fprintf (file, " [APCS-26]");
7422 fprintf (file, " [APCS-32]");
7424 if (flags & EF_ARM_VFP_FLOAT)
7425 fprintf (file, _(" [VFP float format]"));
7426 else if (flags & EF_ARM_MAVERICK_FLOAT)
7427 fprintf (file, _(" [Maverick float format]"));
7429 fprintf (file, _(" [FPA float format]"));
7431 if (flags & EF_ARM_APCS_FLOAT)
7432 fprintf (file, _(" [floats passed in float registers]"));
7434 if (flags & EF_ARM_PIC)
7435 fprintf (file, _(" [position independent]"));
7437 if (flags & EF_ARM_NEW_ABI)
7438 fprintf (file, _(" [new ABI]"));
7440 if (flags & EF_ARM_OLD_ABI)
7441 fprintf (file, _(" [old ABI]"));
7443 if (flags & EF_ARM_SOFT_FLOAT)
7444 fprintf (file, _(" [software FP]"));
7446 flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
7447 | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
7448 | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
7449 | EF_ARM_MAVERICK_FLOAT);
7452 case EF_ARM_EABI_VER1:
7453 fprintf (file, _(" [Version1 EABI]"));
7455 if (flags & EF_ARM_SYMSARESORTED)
7456 fprintf (file, _(" [sorted symbol table]"));
7458 fprintf (file, _(" [unsorted symbol table]"));
7460 flags &= ~ EF_ARM_SYMSARESORTED;
7463 case EF_ARM_EABI_VER2:
7464 fprintf (file, _(" [Version2 EABI]"));
7466 if (flags & EF_ARM_SYMSARESORTED)
7467 fprintf (file, _(" [sorted symbol table]"));
7469 fprintf (file, _(" [unsorted symbol table]"));
7471 if (flags & EF_ARM_DYNSYMSUSESEGIDX)
7472 fprintf (file, _(" [dynamic symbols use segment index]"));
7474 if (flags & EF_ARM_MAPSYMSFIRST)
7475 fprintf (file, _(" [mapping symbols precede others]"));
7477 flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
7478 | EF_ARM_MAPSYMSFIRST);
7481 case EF_ARM_EABI_VER3:
7482 fprintf (file, _(" [Version3 EABI]"));
7485 case EF_ARM_EABI_VER4:
7486 fprintf (file, _(" [Version4 EABI]"));
7489 case EF_ARM_EABI_VER5:
7490 fprintf (file, _(" [Version5 EABI]"));
7492 if (flags & EF_ARM_BE8)
7493 fprintf (file, _(" [BE8]"));
7495 if (flags & EF_ARM_LE8)
7496 fprintf (file, _(" [LE8]"));
7498 flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
7502 fprintf (file, _(" <EABI version unrecognised>"));
7506 flags &= ~ EF_ARM_EABIMASK;
7508 if (flags & EF_ARM_RELEXEC)
7509 fprintf (file, _(" [relocatable executable]"));
7511 if (flags & EF_ARM_HASENTRY)
7512 fprintf (file, _(" [has entry point]"));
7514 flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
7517 fprintf (file, _("<Unrecognised flag bits set>"));
7525 elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
7527 switch (ELF_ST_TYPE (elf_sym->st_info))
7530 return ELF_ST_TYPE (elf_sym->st_info);
7533 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
7534 This allows us to distinguish between data used by Thumb instructions
7535 and non-data (which is probably code) inside Thumb regions of an
7537 if (type != STT_OBJECT && type != STT_TLS)
7538 return ELF_ST_TYPE (elf_sym->st_info);
7549 elf32_arm_gc_mark_hook (asection *sec,
7550 struct bfd_link_info *info,
7551 Elf_Internal_Rela *rel,
7552 struct elf_link_hash_entry *h,
7553 Elf_Internal_Sym *sym)
7556 switch (ELF32_R_TYPE (rel->r_info))
7558 case R_ARM_GNU_VTINHERIT:
7559 case R_ARM_GNU_VTENTRY:
7563 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
7566 /* Update the got entry reference counts for the section being removed. */
7569 elf32_arm_gc_sweep_hook (bfd * abfd,
7570 struct bfd_link_info * info,
7572 const Elf_Internal_Rela * relocs)
7574 Elf_Internal_Shdr *symtab_hdr;
7575 struct elf_link_hash_entry **sym_hashes;
7576 bfd_signed_vma *local_got_refcounts;
7577 const Elf_Internal_Rela *rel, *relend;
7578 struct elf32_arm_link_hash_table * globals;
7580 if (info->relocatable)
7583 globals = elf32_arm_hash_table (info);
7585 elf_section_data (sec)->local_dynrel = NULL;
7587 symtab_hdr = & elf_symtab_hdr (abfd);
7588 sym_hashes = elf_sym_hashes (abfd);
7589 local_got_refcounts = elf_local_got_refcounts (abfd);
7591 check_use_blx(globals);
7593 relend = relocs + sec->reloc_count;
7594 for (rel = relocs; rel < relend; rel++)
7596 unsigned long r_symndx;
7597 struct elf_link_hash_entry *h = NULL;
7600 r_symndx = ELF32_R_SYM (rel->r_info);
7601 if (r_symndx >= symtab_hdr->sh_info)
7603 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7604 while (h->root.type == bfd_link_hash_indirect
7605 || h->root.type == bfd_link_hash_warning)
7606 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7609 r_type = ELF32_R_TYPE (rel->r_info);
7610 r_type = arm_real_reloc_type (globals, r_type);
7614 case R_ARM_GOT_PREL:
7615 case R_ARM_TLS_GD32:
7616 case R_ARM_TLS_IE32:
7619 if (h->got.refcount > 0)
7620 h->got.refcount -= 1;
7622 else if (local_got_refcounts != NULL)
7624 if (local_got_refcounts[r_symndx] > 0)
7625 local_got_refcounts[r_symndx] -= 1;
7629 case R_ARM_TLS_LDM32:
7630 elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1;
7634 case R_ARM_ABS32_NOI:
7636 case R_ARM_REL32_NOI:
7642 case R_ARM_THM_CALL:
7643 case R_ARM_THM_JUMP24:
7644 case R_ARM_THM_JUMP19:
7645 case R_ARM_MOVW_ABS_NC:
7646 case R_ARM_MOVT_ABS:
7647 case R_ARM_MOVW_PREL_NC:
7648 case R_ARM_MOVT_PREL:
7649 case R_ARM_THM_MOVW_ABS_NC:
7650 case R_ARM_THM_MOVT_ABS:
7651 case R_ARM_THM_MOVW_PREL_NC:
7652 case R_ARM_THM_MOVT_PREL:
7653 /* Should the interworking branches be here also? */
7657 struct elf32_arm_link_hash_entry *eh;
7658 struct elf32_arm_relocs_copied **pp;
7659 struct elf32_arm_relocs_copied *p;
7661 eh = (struct elf32_arm_link_hash_entry *) h;
7663 if (h->plt.refcount > 0)
7665 h->plt.refcount -= 1;
7666 if (r_type == R_ARM_THM_CALL)
7667 eh->plt_maybe_thumb_refcount--;
7669 if (r_type == R_ARM_THM_JUMP24
7670 || r_type == R_ARM_THM_JUMP19)
7671 eh->plt_thumb_refcount--;
7674 if (r_type == R_ARM_ABS32
7675 || r_type == R_ARM_REL32
7676 || r_type == R_ARM_ABS32_NOI
7677 || r_type == R_ARM_REL32_NOI)
7679 for (pp = &eh->relocs_copied; (p = *pp) != NULL;
7681 if (p->section == sec)
7684 if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32
7685 || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI)
7703 /* Look through the relocs for a section during the first phase. */
7706 elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
7707 asection *sec, const Elf_Internal_Rela *relocs)
7709 Elf_Internal_Shdr *symtab_hdr;
7710 struct elf_link_hash_entry **sym_hashes;
7711 const Elf_Internal_Rela *rel;
7712 const Elf_Internal_Rela *rel_end;
7715 bfd_vma *local_got_offsets;
7716 struct elf32_arm_link_hash_table *htab;
7717 bfd_boolean needs_plt;
7719 if (info->relocatable)
7722 BFD_ASSERT (is_arm_elf (abfd));
7724 htab = elf32_arm_hash_table (info);
7727 /* Create dynamic sections for relocatable executables so that we can
7728 copy relocations. */
7729 if (htab->root.is_relocatable_executable
7730 && ! htab->root.dynamic_sections_created)
7732 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
7736 dynobj = elf_hash_table (info)->dynobj;
7737 local_got_offsets = elf_local_got_offsets (abfd);
7739 symtab_hdr = & elf_symtab_hdr (abfd);
7740 sym_hashes = elf_sym_hashes (abfd);
7742 rel_end = relocs + sec->reloc_count;
7743 for (rel = relocs; rel < rel_end; rel++)
7745 struct elf_link_hash_entry *h;
7746 struct elf32_arm_link_hash_entry *eh;
7747 unsigned long r_symndx;
7750 r_symndx = ELF32_R_SYM (rel->r_info);
7751 r_type = ELF32_R_TYPE (rel->r_info);
7752 r_type = arm_real_reloc_type (htab, r_type);
7754 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
7756 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
7761 if (r_symndx < symtab_hdr->sh_info)
7765 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7766 while (h->root.type == bfd_link_hash_indirect
7767 || h->root.type == bfd_link_hash_warning)
7768 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7771 eh = (struct elf32_arm_link_hash_entry *) h;
7776 case R_ARM_GOT_PREL:
7777 case R_ARM_TLS_GD32:
7778 case R_ARM_TLS_IE32:
7779 /* This symbol requires a global offset table entry. */
7781 int tls_type, old_tls_type;
7785 case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
7786 case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
7787 default: tls_type = GOT_NORMAL; break;
7793 old_tls_type = elf32_arm_hash_entry (h)->tls_type;
7797 bfd_signed_vma *local_got_refcounts;
7799 /* This is a global offset table entry for a local symbol. */
7800 local_got_refcounts = elf_local_got_refcounts (abfd);
7801 if (local_got_refcounts == NULL)
7805 size = symtab_hdr->sh_info;
7806 size *= (sizeof (bfd_signed_vma) + sizeof(char));
7807 local_got_refcounts = bfd_zalloc (abfd, size);
7808 if (local_got_refcounts == NULL)
7810 elf_local_got_refcounts (abfd) = local_got_refcounts;
7811 elf32_arm_local_got_tls_type (abfd)
7812 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
7814 local_got_refcounts[r_symndx] += 1;
7815 old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
7818 /* We will already have issued an error message if there is a
7819 TLS / non-TLS mismatch, based on the symbol type. We don't
7820 support any linker relaxations. So just combine any TLS
7822 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
7823 && tls_type != GOT_NORMAL)
7824 tls_type |= old_tls_type;
7826 if (old_tls_type != tls_type)
7829 elf32_arm_hash_entry (h)->tls_type = tls_type;
7831 elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
7836 case R_ARM_TLS_LDM32:
7837 if (r_type == R_ARM_TLS_LDM32)
7838 htab->tls_ldm_got.refcount++;
7841 case R_ARM_GOTOFF32:
7843 if (htab->sgot == NULL)
7845 if (htab->root.dynobj == NULL)
7846 htab->root.dynobj = abfd;
7847 if (!create_got_section (htab->root.dynobj, info))
7853 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
7854 ldr __GOTT_INDEX__ offsets. */
7855 if (!htab->vxworks_p)
7864 case R_ARM_THM_CALL:
7865 case R_ARM_THM_JUMP24:
7866 case R_ARM_THM_JUMP19:
7871 case R_ARM_ABS32_NOI:
7873 case R_ARM_REL32_NOI:
7874 case R_ARM_MOVW_ABS_NC:
7875 case R_ARM_MOVT_ABS:
7876 case R_ARM_MOVW_PREL_NC:
7877 case R_ARM_MOVT_PREL:
7878 case R_ARM_THM_MOVW_ABS_NC:
7879 case R_ARM_THM_MOVT_ABS:
7880 case R_ARM_THM_MOVW_PREL_NC:
7881 case R_ARM_THM_MOVT_PREL:
7885 /* Should the interworking branches be listed here? */
7888 /* If this reloc is in a read-only section, we might
7889 need a copy reloc. We can't check reliably at this
7890 stage whether the section is read-only, as input
7891 sections have not yet been mapped to output sections.
7892 Tentatively set the flag for now, and correct in
7893 adjust_dynamic_symbol. */
7897 /* We may need a .plt entry if the function this reloc
7898 refers to is in a different object. We can't tell for
7899 sure yet, because something later might force the
7904 /* If we create a PLT entry, this relocation will reference
7905 it, even if it's an ABS32 relocation. */
7906 h->plt.refcount += 1;
7908 /* It's too early to use htab->use_blx here, so we have to
7909 record possible blx references separately from
7910 relocs that definitely need a thumb stub. */
7912 if (r_type == R_ARM_THM_CALL)
7913 eh->plt_maybe_thumb_refcount += 1;
7915 if (r_type == R_ARM_THM_JUMP24
7916 || r_type == R_ARM_THM_JUMP19)
7917 eh->plt_thumb_refcount += 1;
7920 /* If we are creating a shared library or relocatable executable,
7921 and this is a reloc against a global symbol, or a non PC
7922 relative reloc against a local symbol, then we need to copy
7923 the reloc into the shared library. However, if we are linking
7924 with -Bsymbolic, we do not need to copy a reloc against a
7925 global symbol which is defined in an object we are
7926 including in the link (i.e., DEF_REGULAR is set). At
7927 this point we have not seen all the input files, so it is
7928 possible that DEF_REGULAR is not set now but will be set
7929 later (it is never cleared). We account for that
7930 possibility below by storing information in the
7931 relocs_copied field of the hash table entry. */
7932 if ((info->shared || htab->root.is_relocatable_executable)
7933 && (sec->flags & SEC_ALLOC) != 0
7934 && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI)
7935 || (h != NULL && ! h->needs_plt
7936 && (! info->symbolic || ! h->def_regular))))
7938 struct elf32_arm_relocs_copied *p, **head;
7940 /* When creating a shared object, we must copy these
7941 reloc types into the output file. We create a reloc
7942 section in dynobj and make room for this reloc. */
7947 name = (bfd_elf_string_from_elf_section
7949 elf_elfheader (abfd)->e_shstrndx,
7950 elf_section_data (sec)->rel_hdr.sh_name));
7954 BFD_ASSERT (reloc_section_p (htab, name, sec));
7956 sreloc = bfd_get_section_by_name (dynobj, name);
7961 flags = (SEC_HAS_CONTENTS | SEC_READONLY
7962 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
7963 if ((sec->flags & SEC_ALLOC) != 0
7964 /* BPABI objects never have dynamic
7965 relocations mapped. */
7966 && !htab->symbian_p)
7967 flags |= SEC_ALLOC | SEC_LOAD;
7968 sreloc = bfd_make_section_with_flags (dynobj,
7972 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
7976 elf_section_data (sec)->sreloc = sreloc;
7979 /* If this is a global symbol, we count the number of
7980 relocations we need for this symbol. */
7983 head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied;
7987 /* Track dynamic relocs needed for local syms too.
7988 We really need local syms available to do this
7994 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
7999 vpp = &elf_section_data (s)->local_dynrel;
8000 head = (struct elf32_arm_relocs_copied **) vpp;
8004 if (p == NULL || p->section != sec)
8006 bfd_size_type amt = sizeof *p;
8008 p = bfd_alloc (htab->root.dynobj, amt);
8018 if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI)
8024 /* This relocation describes the C++ object vtable hierarchy.
8025 Reconstruct it for later use during GC. */
8026 case R_ARM_GNU_VTINHERIT:
8027 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
8031 /* This relocation describes which C++ vtable entries are actually
8032 used. Record for later use during GC. */
8033 case R_ARM_GNU_VTENTRY:
8034 BFD_ASSERT (h != NULL);
8036 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
8045 /* Unwinding tables are not referenced directly. This pass marks them as
8046 required if the corresponding code section is marked. */
8049 elf32_arm_gc_mark_extra_sections(struct bfd_link_info *info,
8050 elf_gc_mark_hook_fn gc_mark_hook)
8053 Elf_Internal_Shdr **elf_shdrp;
8056 /* Marking EH data may cause additional code sections to be marked,
8057 requiring multiple passes. */
8062 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
8066 if (! is_arm_elf (sub))
8069 elf_shdrp = elf_elfsections (sub);
8070 for (o = sub->sections; o != NULL; o = o->next)
8072 Elf_Internal_Shdr *hdr;
8074 hdr = &elf_section_data (o)->this_hdr;
8075 if (hdr->sh_type == SHT_ARM_EXIDX && hdr->sh_link
8077 && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
8080 if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
8090 /* Treat mapping symbols as special target symbols. */
8093 elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
8095 return bfd_is_arm_special_symbol_name (sym->name,
8096 BFD_ARM_SPECIAL_SYM_TYPE_ANY);
8099 /* This is a copy of elf_find_function() from elf.c except that
8100 ARM mapping symbols are ignored when looking for function names
8101 and STT_ARM_TFUNC is considered to a function type. */
8104 arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
8108 const char ** filename_ptr,
8109 const char ** functionname_ptr)
8111 const char * filename = NULL;
8112 asymbol * func = NULL;
8113 bfd_vma low_func = 0;
8116 for (p = symbols; *p != NULL; p++)
8120 q = (elf_symbol_type *) *p;
8122 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
8127 filename = bfd_asymbol_name (&q->symbol);
8132 /* Skip mapping symbols. */
8133 if ((q->symbol.flags & BSF_LOCAL)
8134 && bfd_is_arm_special_symbol_name (q->symbol.name,
8135 BFD_ARM_SPECIAL_SYM_TYPE_ANY))
8138 if (bfd_get_section (&q->symbol) == section
8139 && q->symbol.value >= low_func
8140 && q->symbol.value <= offset)
8142 func = (asymbol *) q;
8143 low_func = q->symbol.value;
8153 *filename_ptr = filename;
8154 if (functionname_ptr)
8155 *functionname_ptr = bfd_asymbol_name (func);
8161 /* Find the nearest line to a particular section and offset, for error
8162 reporting. This code is a duplicate of the code in elf.c, except
8163 that it uses arm_elf_find_function. */
8166 elf32_arm_find_nearest_line (bfd * abfd,
8170 const char ** filename_ptr,
8171 const char ** functionname_ptr,
8172 unsigned int * line_ptr)
8174 bfd_boolean found = FALSE;
8176 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
8178 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
8179 filename_ptr, functionname_ptr,
8181 & elf_tdata (abfd)->dwarf2_find_line_info))
8183 if (!*functionname_ptr)
8184 arm_elf_find_function (abfd, section, symbols, offset,
8185 *filename_ptr ? NULL : filename_ptr,
8191 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
8192 & found, filename_ptr,
8193 functionname_ptr, line_ptr,
8194 & elf_tdata (abfd)->line_info))
8197 if (found && (*functionname_ptr || *line_ptr))
8200 if (symbols == NULL)
8203 if (! arm_elf_find_function (abfd, section, symbols, offset,
8204 filename_ptr, functionname_ptr))
8212 elf32_arm_find_inliner_info (bfd * abfd,
8213 const char ** filename_ptr,
8214 const char ** functionname_ptr,
8215 unsigned int * line_ptr)
8218 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
8219 functionname_ptr, line_ptr,
8220 & elf_tdata (abfd)->dwarf2_find_line_info);
8224 /* Adjust a symbol defined by a dynamic object and referenced by a
8225 regular object. The current definition is in some section of the
8226 dynamic object, but we're not including those sections. We have to
8227 change the definition to something the rest of the link can
8231 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
8232 struct elf_link_hash_entry * h)
8236 struct elf32_arm_link_hash_entry * eh;
8237 struct elf32_arm_link_hash_table *globals;
8239 globals = elf32_arm_hash_table (info);
8240 dynobj = elf_hash_table (info)->dynobj;
8242 /* Make sure we know what is going on here. */
8243 BFD_ASSERT (dynobj != NULL
8245 || h->u.weakdef != NULL
8248 && !h->def_regular)));
8250 eh = (struct elf32_arm_link_hash_entry *) h;
8252 /* If this is a function, put it in the procedure linkage table. We
8253 will fill in the contents of the procedure linkage table later,
8254 when we know the address of the .got section. */
8255 if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
8258 if (h->plt.refcount <= 0
8259 || SYMBOL_CALLS_LOCAL (info, h)
8260 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8261 && h->root.type == bfd_link_hash_undefweak))
8263 /* This case can occur if we saw a PLT32 reloc in an input
8264 file, but the symbol was never referred to by a dynamic
8265 object, or if all references were garbage collected. In
8266 such a case, we don't actually need to build a procedure
8267 linkage table, and we can just do a PC24 reloc instead. */
8268 h->plt.offset = (bfd_vma) -1;
8269 eh->plt_thumb_refcount = 0;
8270 eh->plt_maybe_thumb_refcount = 0;
8278 /* It's possible that we incorrectly decided a .plt reloc was
8279 needed for an R_ARM_PC24 or similar reloc to a non-function sym
8280 in check_relocs. We can't decide accurately between function
8281 and non-function syms in check-relocs; Objects loaded later in
8282 the link may change h->type. So fix it now. */
8283 h->plt.offset = (bfd_vma) -1;
8284 eh->plt_thumb_refcount = 0;
8285 eh->plt_maybe_thumb_refcount = 0;
8288 /* If this is a weak symbol, and there is a real definition, the
8289 processor independent code will have arranged for us to see the
8290 real definition first, and we can just use the same value. */
8291 if (h->u.weakdef != NULL)
8293 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
8294 || h->u.weakdef->root.type == bfd_link_hash_defweak);
8295 h->root.u.def.section = h->u.weakdef->root.u.def.section;
8296 h->root.u.def.value = h->u.weakdef->root.u.def.value;
8300 /* If there are no non-GOT references, we do not need a copy
8302 if (!h->non_got_ref)
8305 /* This is a reference to a symbol defined by a dynamic object which
8306 is not a function. */
8308 /* If we are creating a shared library, we must presume that the
8309 only references to the symbol are via the global offset table.
8310 For such cases we need not do anything here; the relocations will
8311 be handled correctly by relocate_section. Relocatable executables
8312 can reference data in shared objects directly, so we don't need to
8313 do anything here. */
8314 if (info->shared || globals->root.is_relocatable_executable)
8319 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
8320 h->root.root.string);
8324 /* We must allocate the symbol in our .dynbss section, which will
8325 become part of the .bss section of the executable. There will be
8326 an entry for this symbol in the .dynsym section. The dynamic
8327 object will contain position independent code, so all references
8328 from the dynamic object to this symbol will go through the global
8329 offset table. The dynamic linker will use the .dynsym entry to
8330 determine the address it must put in the global offset table, so
8331 both the dynamic object and the regular object will refer to the
8332 same memory location for the variable. */
8333 s = bfd_get_section_by_name (dynobj, ".dynbss");
8334 BFD_ASSERT (s != NULL);
8336 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
8337 copy the initial value out of the dynamic object and into the
8338 runtime process image. We need to remember the offset into the
8339 .rel(a).bss section we are going to use. */
8340 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
8344 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss"));
8345 BFD_ASSERT (srel != NULL);
8346 srel->size += RELOC_SIZE (globals);
8350 return _bfd_elf_adjust_dynamic_copy (h, s);
8353 /* Allocate space in .plt, .got and associated reloc sections for
8357 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
8359 struct bfd_link_info *info;
8360 struct elf32_arm_link_hash_table *htab;
8361 struct elf32_arm_link_hash_entry *eh;
8362 struct elf32_arm_relocs_copied *p;
8363 bfd_signed_vma thumb_refs;
8365 eh = (struct elf32_arm_link_hash_entry *) h;
8367 if (h->root.type == bfd_link_hash_indirect)
8370 if (h->root.type == bfd_link_hash_warning)
8371 /* When warning symbols are created, they **replace** the "real"
8372 entry in the hash table, thus we never get to see the real
8373 symbol in a hash traversal. So look at it now. */
8374 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8376 info = (struct bfd_link_info *) inf;
8377 htab = elf32_arm_hash_table (info);
8379 if (htab->root.dynamic_sections_created
8380 && h->plt.refcount > 0)
8382 /* Make sure this symbol is output as a dynamic symbol.
8383 Undefined weak syms won't yet be marked as dynamic. */
8384 if (h->dynindx == -1
8385 && !h->forced_local)
8387 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8392 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
8394 asection *s = htab->splt;
8396 /* If this is the first .plt entry, make room for the special
8399 s->size += htab->plt_header_size;
8401 h->plt.offset = s->size;
8403 /* If we will insert a Thumb trampoline before this PLT, leave room
8405 thumb_refs = eh->plt_thumb_refcount;
8407 thumb_refs += eh->plt_maybe_thumb_refcount;
8411 h->plt.offset += PLT_THUMB_STUB_SIZE;
8412 s->size += PLT_THUMB_STUB_SIZE;
8415 /* If this symbol is not defined in a regular file, and we are
8416 not generating a shared library, then set the symbol to this
8417 location in the .plt. This is required to make function
8418 pointers compare as equal between the normal executable and
8419 the shared library. */
8423 h->root.u.def.section = s;
8424 h->root.u.def.value = h->plt.offset;
8426 /* Make sure the function is not marked as Thumb, in case
8427 it is the target of an ABS32 relocation, which will
8428 point to the PLT entry. */
8429 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
8430 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
8433 /* Make room for this entry. */
8434 s->size += htab->plt_entry_size;
8436 if (!htab->symbian_p)
8438 /* We also need to make an entry in the .got.plt section, which
8439 will be placed in the .got section by the linker script. */
8440 eh->plt_got_offset = htab->sgotplt->size;
8441 htab->sgotplt->size += 4;
8444 /* We also need to make an entry in the .rel(a).plt section. */
8445 htab->srelplt->size += RELOC_SIZE (htab);
8447 /* VxWorks executables have a second set of relocations for
8448 each PLT entry. They go in a separate relocation section,
8449 which is processed by the kernel loader. */
8450 if (htab->vxworks_p && !info->shared)
8452 /* There is a relocation for the initial PLT entry:
8453 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
8454 if (h->plt.offset == htab->plt_header_size)
8455 htab->srelplt2->size += RELOC_SIZE (htab);
8457 /* There are two extra relocations for each subsequent
8458 PLT entry: an R_ARM_32 relocation for the GOT entry,
8459 and an R_ARM_32 relocation for the PLT entry. */
8460 htab->srelplt2->size += RELOC_SIZE (htab) * 2;
8465 h->plt.offset = (bfd_vma) -1;
8471 h->plt.offset = (bfd_vma) -1;
8475 if (h->got.refcount > 0)
8479 int tls_type = elf32_arm_hash_entry (h)->tls_type;
8482 /* Make sure this symbol is output as a dynamic symbol.
8483 Undefined weak syms won't yet be marked as dynamic. */
8484 if (h->dynindx == -1
8485 && !h->forced_local)
8487 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8491 if (!htab->symbian_p)
8494 h->got.offset = s->size;
8496 if (tls_type == GOT_UNKNOWN)
8499 if (tls_type == GOT_NORMAL)
8500 /* Non-TLS symbols need one GOT slot. */
8504 if (tls_type & GOT_TLS_GD)
8505 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
8507 if (tls_type & GOT_TLS_IE)
8508 /* R_ARM_TLS_IE32 needs one GOT slot. */
8512 dyn = htab->root.dynamic_sections_created;
8515 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8517 || !SYMBOL_REFERENCES_LOCAL (info, h)))
8520 if (tls_type != GOT_NORMAL
8521 && (info->shared || indx != 0)
8522 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8523 || h->root.type != bfd_link_hash_undefweak))
8525 if (tls_type & GOT_TLS_IE)
8526 htab->srelgot->size += RELOC_SIZE (htab);
8528 if (tls_type & GOT_TLS_GD)
8529 htab->srelgot->size += RELOC_SIZE (htab);
8531 if ((tls_type & GOT_TLS_GD) && indx != 0)
8532 htab->srelgot->size += RELOC_SIZE (htab);
8534 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8535 || h->root.type != bfd_link_hash_undefweak)
8537 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
8538 htab->srelgot->size += RELOC_SIZE (htab);
8542 h->got.offset = (bfd_vma) -1;
8544 /* Allocate stubs for exported Thumb functions on v4t. */
8545 if (!htab->use_blx && h->dynindx != -1
8547 && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
8548 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
8550 struct elf_link_hash_entry * th;
8551 struct bfd_link_hash_entry * bh;
8552 struct elf_link_hash_entry * myh;
8556 /* Create a new symbol to regist the real location of the function. */
8557 s = h->root.u.def.section;
8558 sprintf(name, "__real_%s", h->root.root.string);
8559 _bfd_generic_link_add_one_symbol (info, s->owner,
8560 name, BSF_GLOBAL, s,
8561 h->root.u.def.value,
8562 NULL, TRUE, FALSE, &bh);
8564 myh = (struct elf_link_hash_entry *) bh;
8565 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
8566 myh->forced_local = 1;
8567 eh->export_glue = myh;
8568 th = record_arm_to_thumb_glue (info, h);
8569 /* Point the symbol at the stub. */
8570 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
8571 h->root.u.def.section = th->root.u.def.section;
8572 h->root.u.def.value = th->root.u.def.value & ~1;
8575 if (eh->relocs_copied == NULL)
8578 /* In the shared -Bsymbolic case, discard space allocated for
8579 dynamic pc-relative relocs against symbols which turn out to be
8580 defined in regular objects. For the normal shared case, discard
8581 space for pc-relative relocs that have become local due to symbol
8582 visibility changes. */
8584 if (info->shared || htab->root.is_relocatable_executable)
8586 /* The only relocs that use pc_count are R_ARM_REL32 and
8587 R_ARM_REL32_NOI, which will appear on something like
8588 ".long foo - .". We want calls to protected symbols to resolve
8589 directly to the function rather than going via the plt. If people
8590 want function pointer comparisons to work as expected then they
8591 should avoid writing assembly like ".long foo - .". */
8592 if (SYMBOL_CALLS_LOCAL (info, h))
8594 struct elf32_arm_relocs_copied **pp;
8596 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
8598 p->count -= p->pc_count;
8607 /* Also discard relocs on undefined weak syms with non-default
8609 if (eh->relocs_copied != NULL
8610 && h->root.type == bfd_link_hash_undefweak)
8612 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8613 eh->relocs_copied = NULL;
8615 /* Make sure undefined weak symbols are output as a dynamic
8617 else if (h->dynindx == -1
8618 && !h->forced_local)
8620 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8625 else if (htab->root.is_relocatable_executable && h->dynindx == -1
8626 && h->root.type == bfd_link_hash_new)
8628 /* Output absolute symbols so that we can create relocations
8629 against them. For normal symbols we output a relocation
8630 against the section that contains them. */
8631 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8638 /* For the non-shared case, discard space for relocs against
8639 symbols which turn out to need copy relocs or are not
8645 || (htab->root.dynamic_sections_created
8646 && (h->root.type == bfd_link_hash_undefweak
8647 || h->root.type == bfd_link_hash_undefined))))
8649 /* Make sure this symbol is output as a dynamic symbol.
8650 Undefined weak syms won't yet be marked as dynamic. */
8651 if (h->dynindx == -1
8652 && !h->forced_local)
8654 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8658 /* If that succeeded, we know we'll be keeping all the
8660 if (h->dynindx != -1)
8664 eh->relocs_copied = NULL;
8669 /* Finally, allocate space. */
8670 for (p = eh->relocs_copied; p != NULL; p = p->next)
8672 asection *sreloc = elf_section_data (p->section)->sreloc;
8673 sreloc->size += p->count * RELOC_SIZE (htab);
8679 /* Find any dynamic relocs that apply to read-only sections. */
8682 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
8684 struct elf32_arm_link_hash_entry *eh;
8685 struct elf32_arm_relocs_copied *p;
8687 if (h->root.type == bfd_link_hash_warning)
8688 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8690 eh = (struct elf32_arm_link_hash_entry *) h;
8691 for (p = eh->relocs_copied; p != NULL; p = p->next)
8693 asection *s = p->section;
8695 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8697 struct bfd_link_info *info = (struct bfd_link_info *) inf;
8699 info->flags |= DF_TEXTREL;
8701 /* Not an error, just cut short the traversal. */
8709 bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info,
8712 struct elf32_arm_link_hash_table *globals;
8714 globals = elf32_arm_hash_table (info);
8715 globals->byteswap_code = byteswap_code;
8718 /* Set the sizes of the dynamic sections. */
8721 elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
8722 struct bfd_link_info * info)
8729 struct elf32_arm_link_hash_table *htab;
8731 htab = elf32_arm_hash_table (info);
8732 dynobj = elf_hash_table (info)->dynobj;
8733 BFD_ASSERT (dynobj != NULL);
8734 check_use_blx (htab);
8736 if (elf_hash_table (info)->dynamic_sections_created)
8738 /* Set the contents of the .interp section to the interpreter. */
8739 if (info->executable)
8741 s = bfd_get_section_by_name (dynobj, ".interp");
8742 BFD_ASSERT (s != NULL);
8743 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8744 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8748 /* Set up .got offsets for local syms, and space for local dynamic
8750 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8752 bfd_signed_vma *local_got;
8753 bfd_signed_vma *end_local_got;
8754 char *local_tls_type;
8755 bfd_size_type locsymcount;
8756 Elf_Internal_Shdr *symtab_hdr;
8759 if (! is_arm_elf (ibfd))
8762 for (s = ibfd->sections; s != NULL; s = s->next)
8764 struct elf32_arm_relocs_copied *p;
8766 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
8768 if (!bfd_is_abs_section (p->section)
8769 && bfd_is_abs_section (p->section->output_section))
8771 /* Input section has been discarded, either because
8772 it is a copy of a linkonce section or due to
8773 linker script /DISCARD/, so we'll be discarding
8776 else if (p->count != 0)
8778 srel = elf_section_data (p->section)->sreloc;
8779 srel->size += p->count * RELOC_SIZE (htab);
8780 if ((p->section->output_section->flags & SEC_READONLY) != 0)
8781 info->flags |= DF_TEXTREL;
8786 local_got = elf_local_got_refcounts (ibfd);
8790 symtab_hdr = & elf_symtab_hdr (ibfd);
8791 locsymcount = symtab_hdr->sh_info;
8792 end_local_got = local_got + locsymcount;
8793 local_tls_type = elf32_arm_local_got_tls_type (ibfd);
8795 srel = htab->srelgot;
8796 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
8800 *local_got = s->size;
8801 if (*local_tls_type & GOT_TLS_GD)
8802 /* TLS_GD relocs need an 8-byte structure in the GOT. */
8804 if (*local_tls_type & GOT_TLS_IE)
8806 if (*local_tls_type == GOT_NORMAL)
8809 if (info->shared || *local_tls_type == GOT_TLS_GD)
8810 srel->size += RELOC_SIZE (htab);
8813 *local_got = (bfd_vma) -1;
8817 if (htab->tls_ldm_got.refcount > 0)
8819 /* Allocate two GOT entries and one dynamic relocation (if necessary)
8820 for R_ARM_TLS_LDM32 relocations. */
8821 htab->tls_ldm_got.offset = htab->sgot->size;
8822 htab->sgot->size += 8;
8824 htab->srelgot->size += RELOC_SIZE (htab);
8827 htab->tls_ldm_got.offset = -1;
8829 /* Allocate global sym .plt and .got entries, and space for global
8830 sym dynamic relocs. */
8831 elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info);
8833 /* Here we rummage through the found bfds to collect glue information. */
8834 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8836 if (! is_arm_elf (ibfd))
8839 /* Initialise mapping tables for code/data. */
8840 bfd_elf32_arm_init_maps (ibfd);
8842 if (!bfd_elf32_arm_process_before_allocation (ibfd, info)
8843 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info))
8844 /* xgettext:c-format */
8845 _bfd_error_handler (_("Errors encountered processing file %s"),
8849 /* The check_relocs and adjust_dynamic_symbol entry points have
8850 determined the sizes of the various dynamic sections. Allocate
8854 for (s = dynobj->sections; s != NULL; s = s->next)
8858 if ((s->flags & SEC_LINKER_CREATED) == 0)
8861 /* It's OK to base decisions on the section name, because none
8862 of the dynobj section names depend upon the input files. */
8863 name = bfd_get_section_name (dynobj, s);
8865 if (strcmp (name, ".plt") == 0)
8867 /* Remember whether there is a PLT. */
8870 else if (CONST_STRNEQ (name, ".rel"))
8874 /* Remember whether there are any reloc sections other
8875 than .rel(a).plt and .rela.plt.unloaded. */
8876 if (s != htab->srelplt && s != htab->srelplt2)
8879 /* We use the reloc_count field as a counter if we need
8880 to copy relocs into the output file. */
8884 else if (! CONST_STRNEQ (name, ".got")
8885 && strcmp (name, ".dynbss") != 0)
8887 /* It's not one of our sections, so don't allocate space. */
8893 /* If we don't need this section, strip it from the
8894 output file. This is mostly to handle .rel(a).bss and
8895 .rel(a).plt. We must create both sections in
8896 create_dynamic_sections, because they must be created
8897 before the linker maps input sections to output
8898 sections. The linker does that before
8899 adjust_dynamic_symbol is called, and it is that
8900 function which decides whether anything needs to go
8901 into these sections. */
8902 s->flags |= SEC_EXCLUDE;
8906 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8909 /* Allocate memory for the section contents. */
8910 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
8911 if (s->contents == NULL)
8915 if (elf_hash_table (info)->dynamic_sections_created)
8917 /* Add some entries to the .dynamic section. We fill in the
8918 values later, in elf32_arm_finish_dynamic_sections, but we
8919 must add the entries now so that we get the correct size for
8920 the .dynamic section. The DT_DEBUG entry is filled in by the
8921 dynamic linker and used by the debugger. */
8922 #define add_dynamic_entry(TAG, VAL) \
8923 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8925 if (info->executable)
8927 if (!add_dynamic_entry (DT_DEBUG, 0))
8933 if ( !add_dynamic_entry (DT_PLTGOT, 0)
8934 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8935 || !add_dynamic_entry (DT_PLTREL,
8936 htab->use_rel ? DT_REL : DT_RELA)
8937 || !add_dynamic_entry (DT_JMPREL, 0))
8945 if (!add_dynamic_entry (DT_REL, 0)
8946 || !add_dynamic_entry (DT_RELSZ, 0)
8947 || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab)))
8952 if (!add_dynamic_entry (DT_RELA, 0)
8953 || !add_dynamic_entry (DT_RELASZ, 0)
8954 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
8959 /* If any dynamic relocs apply to a read-only section,
8960 then we need a DT_TEXTREL entry. */
8961 if ((info->flags & DF_TEXTREL) == 0)
8962 elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs,
8965 if ((info->flags & DF_TEXTREL) != 0)
8967 if (!add_dynamic_entry (DT_TEXTREL, 0))
8971 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
8974 #undef add_dynamic_entry
8979 /* Finish up dynamic symbol handling. We set the contents of various
8980 dynamic sections here. */
8983 elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info,
8984 struct elf_link_hash_entry * h, Elf_Internal_Sym * sym)
8987 struct elf32_arm_link_hash_table *htab;
8988 struct elf32_arm_link_hash_entry *eh;
8990 dynobj = elf_hash_table (info)->dynobj;
8991 htab = elf32_arm_hash_table (info);
8992 eh = (struct elf32_arm_link_hash_entry *) h;
8994 if (h->plt.offset != (bfd_vma) -1)
9000 Elf_Internal_Rela rel;
9002 /* This symbol has an entry in the procedure linkage table. Set
9005 BFD_ASSERT (h->dynindx != -1);
9007 splt = bfd_get_section_by_name (dynobj, ".plt");
9008 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt"));
9009 BFD_ASSERT (splt != NULL && srel != NULL);
9011 /* Fill in the entry in the procedure linkage table. */
9012 if (htab->symbian_p)
9014 put_arm_insn (htab, output_bfd,
9015 elf32_arm_symbian_plt_entry[0],
9016 splt->contents + h->plt.offset);
9017 bfd_put_32 (output_bfd,
9018 elf32_arm_symbian_plt_entry[1],
9019 splt->contents + h->plt.offset + 4);
9021 /* Fill in the entry in the .rel.plt section. */
9022 rel.r_offset = (splt->output_section->vma
9023 + splt->output_offset
9024 + h->plt.offset + 4);
9025 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
9027 /* Get the index in the procedure linkage table which
9028 corresponds to this symbol. This is the index of this symbol
9029 in all the symbols for which we are making plt entries. The
9030 first entry in the procedure linkage table is reserved. */
9031 plt_index = ((h->plt.offset - htab->plt_header_size)
9032 / htab->plt_entry_size);
9036 bfd_vma got_offset, got_address, plt_address;
9037 bfd_vma got_displacement;
9041 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
9042 BFD_ASSERT (sgot != NULL);
9044 /* Get the offset into the .got.plt table of the entry that
9045 corresponds to this function. */
9046 got_offset = eh->plt_got_offset;
9048 /* Get the index in the procedure linkage table which
9049 corresponds to this symbol. This is the index of this symbol
9050 in all the symbols for which we are making plt entries. The
9051 first three entries in .got.plt are reserved; after that
9052 symbols appear in the same order as in .plt. */
9053 plt_index = (got_offset - 12) / 4;
9055 /* Calculate the address of the GOT entry. */
9056 got_address = (sgot->output_section->vma
9057 + sgot->output_offset
9060 /* ...and the address of the PLT entry. */
9061 plt_address = (splt->output_section->vma
9062 + splt->output_offset
9065 ptr = htab->splt->contents + h->plt.offset;
9066 if (htab->vxworks_p && info->shared)
9071 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
9073 val = elf32_arm_vxworks_shared_plt_entry[i];
9075 val |= got_address - sgot->output_section->vma;
9077 val |= plt_index * RELOC_SIZE (htab);
9078 if (i == 2 || i == 5)
9079 bfd_put_32 (output_bfd, val, ptr);
9081 put_arm_insn (htab, output_bfd, val, ptr);
9084 else if (htab->vxworks_p)
9089 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
9091 val = elf32_arm_vxworks_exec_plt_entry[i];
9095 val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2);
9097 val |= plt_index * RELOC_SIZE (htab);
9098 if (i == 2 || i == 5)
9099 bfd_put_32 (output_bfd, val, ptr);
9101 put_arm_insn (htab, output_bfd, val, ptr);
9104 loc = (htab->srelplt2->contents
9105 + (plt_index * 2 + 1) * RELOC_SIZE (htab));
9107 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
9108 referencing the GOT for this PLT entry. */
9109 rel.r_offset = plt_address + 8;
9110 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
9111 rel.r_addend = got_offset;
9112 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
9113 loc += RELOC_SIZE (htab);
9115 /* Create the R_ARM_ABS32 relocation referencing the
9116 beginning of the PLT for this GOT entry. */
9117 rel.r_offset = got_address;
9118 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
9120 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
9124 bfd_signed_vma thumb_refs;
9125 /* Calculate the displacement between the PLT slot and the
9126 entry in the GOT. The eight-byte offset accounts for the
9127 value produced by adding to pc in the first instruction
9129 got_displacement = got_address - (plt_address + 8);
9131 BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
9133 thumb_refs = eh->plt_thumb_refcount;
9135 thumb_refs += eh->plt_maybe_thumb_refcount;
9139 put_thumb_insn (htab, output_bfd,
9140 elf32_arm_plt_thumb_stub[0], ptr - 4);
9141 put_thumb_insn (htab, output_bfd,
9142 elf32_arm_plt_thumb_stub[1], ptr - 2);
9145 put_arm_insn (htab, output_bfd,
9146 elf32_arm_plt_entry[0]
9147 | ((got_displacement & 0x0ff00000) >> 20),
9149 put_arm_insn (htab, output_bfd,
9150 elf32_arm_plt_entry[1]
9151 | ((got_displacement & 0x000ff000) >> 12),
9153 put_arm_insn (htab, output_bfd,
9154 elf32_arm_plt_entry[2]
9155 | (got_displacement & 0x00000fff),
9157 #ifdef FOUR_WORD_PLT
9158 bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12);
9162 /* Fill in the entry in the global offset table. */
9163 bfd_put_32 (output_bfd,
9164 (splt->output_section->vma
9165 + splt->output_offset),
9166 sgot->contents + got_offset);
9168 /* Fill in the entry in the .rel(a).plt section. */
9170 rel.r_offset = got_address;
9171 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
9174 loc = srel->contents + plt_index * RELOC_SIZE (htab);
9175 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
9177 if (!h->def_regular)
9179 /* Mark the symbol as undefined, rather than as defined in
9180 the .plt section. Leave the value alone. */
9181 sym->st_shndx = SHN_UNDEF;
9182 /* If the symbol is weak, we do need to clear the value.
9183 Otherwise, the PLT entry would provide a definition for
9184 the symbol even if the symbol wasn't defined anywhere,
9185 and so the symbol would never be NULL. */
9186 if (!h->ref_regular_nonweak)
9191 if (h->got.offset != (bfd_vma) -1
9192 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0
9193 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0)
9197 Elf_Internal_Rela rel;
9201 /* This symbol has an entry in the global offset table. Set it
9203 sgot = bfd_get_section_by_name (dynobj, ".got");
9204 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got"));
9205 BFD_ASSERT (sgot != NULL && srel != NULL);
9207 offset = (h->got.offset & ~(bfd_vma) 1);
9209 rel.r_offset = (sgot->output_section->vma
9210 + sgot->output_offset
9213 /* If this is a static link, or it is a -Bsymbolic link and the
9214 symbol is defined locally or was forced to be local because
9215 of a version file, we just want to emit a RELATIVE reloc.
9216 The entry in the global offset table will already have been
9217 initialized in the relocate_section function. */
9219 && SYMBOL_REFERENCES_LOCAL (info, h))
9221 BFD_ASSERT((h->got.offset & 1) != 0);
9222 rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
9225 rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
9226 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
9231 BFD_ASSERT((h->got.offset & 1) == 0);
9232 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
9233 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
9236 loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab);
9237 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
9243 Elf_Internal_Rela rel;
9246 /* This symbol needs a copy reloc. Set it up. */
9247 BFD_ASSERT (h->dynindx != -1
9248 && (h->root.type == bfd_link_hash_defined
9249 || h->root.type == bfd_link_hash_defweak));
9251 s = bfd_get_section_by_name (h->root.u.def.section->owner,
9252 RELOC_SECTION (htab, ".bss"));
9253 BFD_ASSERT (s != NULL);
9256 rel.r_offset = (h->root.u.def.value
9257 + h->root.u.def.section->output_section->vma
9258 + h->root.u.def.section->output_offset);
9259 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
9260 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
9261 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
9264 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
9265 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
9266 to the ".got" section. */
9267 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
9268 || (!htab->vxworks_p && h == htab->root.hgot))
9269 sym->st_shndx = SHN_ABS;
9274 /* Finish up the dynamic sections. */
9277 elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
9283 dynobj = elf_hash_table (info)->dynobj;
9285 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
9286 BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL);
9287 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
9289 if (elf_hash_table (info)->dynamic_sections_created)
9292 Elf32_External_Dyn *dyncon, *dynconend;
9293 struct elf32_arm_link_hash_table *htab;
9295 htab = elf32_arm_hash_table (info);
9296 splt = bfd_get_section_by_name (dynobj, ".plt");
9297 BFD_ASSERT (splt != NULL && sdyn != NULL);
9299 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9300 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9302 for (; dyncon < dynconend; dyncon++)
9304 Elf_Internal_Dyn dyn;
9308 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9316 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9317 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9322 goto get_vma_if_bpabi;
9325 goto get_vma_if_bpabi;
9328 goto get_vma_if_bpabi;
9330 name = ".gnu.version";
9331 goto get_vma_if_bpabi;
9333 name = ".gnu.version_d";
9334 goto get_vma_if_bpabi;
9336 name = ".gnu.version_r";
9337 goto get_vma_if_bpabi;
9343 name = RELOC_SECTION (htab, ".plt");
9345 s = bfd_get_section_by_name (output_bfd, name);
9346 BFD_ASSERT (s != NULL);
9347 if (!htab->symbian_p)
9348 dyn.d_un.d_ptr = s->vma;
9350 /* In the BPABI, tags in the PT_DYNAMIC section point
9351 at the file offset, not the memory address, for the
9352 convenience of the post linker. */
9353 dyn.d_un.d_ptr = s->filepos;
9354 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9358 if (htab->symbian_p)
9363 s = bfd_get_section_by_name (output_bfd,
9364 RELOC_SECTION (htab, ".plt"));
9365 BFD_ASSERT (s != NULL);
9366 dyn.d_un.d_val = s->size;
9367 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9372 if (!htab->symbian_p)
9374 /* My reading of the SVR4 ABI indicates that the
9375 procedure linkage table relocs (DT_JMPREL) should be
9376 included in the overall relocs (DT_REL). This is
9377 what Solaris does. However, UnixWare can not handle
9378 that case. Therefore, we override the DT_RELSZ entry
9379 here to make it not include the JMPREL relocs. Since
9380 the linker script arranges for .rel(a).plt to follow all
9381 other relocation sections, we don't have to worry
9382 about changing the DT_REL entry. */
9383 s = bfd_get_section_by_name (output_bfd,
9384 RELOC_SECTION (htab, ".plt"));
9386 dyn.d_un.d_val -= s->size;
9387 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9394 /* In the BPABI, the DT_REL tag must point at the file
9395 offset, not the VMA, of the first relocation
9396 section. So, we use code similar to that in
9397 elflink.c, but do not check for SHF_ALLOC on the
9398 relcoation section, since relocations sections are
9399 never allocated under the BPABI. The comments above
9400 about Unixware notwithstanding, we include all of the
9401 relocations here. */
9402 if (htab->symbian_p)
9405 type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
9406 ? SHT_REL : SHT_RELA);
9408 for (i = 1; i < elf_numsections (output_bfd); i++)
9410 Elf_Internal_Shdr *hdr
9411 = elf_elfsections (output_bfd)[i];
9412 if (hdr->sh_type == type)
9414 if (dyn.d_tag == DT_RELSZ
9415 || dyn.d_tag == DT_RELASZ)
9416 dyn.d_un.d_val += hdr->sh_size;
9417 else if ((ufile_ptr) hdr->sh_offset
9418 <= dyn.d_un.d_val - 1)
9419 dyn.d_un.d_val = hdr->sh_offset;
9422 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9426 /* Set the bottom bit of DT_INIT/FINI if the
9427 corresponding function is Thumb. */
9429 name = info->init_function;
9432 name = info->fini_function;
9434 /* If it wasn't set by elf_bfd_final_link
9435 then there is nothing to adjust. */
9436 if (dyn.d_un.d_val != 0)
9438 struct elf_link_hash_entry * eh;
9440 eh = elf_link_hash_lookup (elf_hash_table (info), name,
9441 FALSE, FALSE, TRUE);
9442 if (eh != (struct elf_link_hash_entry *) NULL
9443 && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC)
9445 dyn.d_un.d_val |= 1;
9446 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9453 /* Fill in the first entry in the procedure linkage table. */
9454 if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size)
9456 const bfd_vma *plt0_entry;
9457 bfd_vma got_address, plt_address, got_displacement;
9459 /* Calculate the addresses of the GOT and PLT. */
9460 got_address = sgot->output_section->vma + sgot->output_offset;
9461 plt_address = splt->output_section->vma + splt->output_offset;
9463 if (htab->vxworks_p)
9465 /* The VxWorks GOT is relocated by the dynamic linker.
9466 Therefore, we must emit relocations rather than simply
9467 computing the values now. */
9468 Elf_Internal_Rela rel;
9470 plt0_entry = elf32_arm_vxworks_exec_plt0_entry;
9471 put_arm_insn (htab, output_bfd, plt0_entry[0],
9472 splt->contents + 0);
9473 put_arm_insn (htab, output_bfd, plt0_entry[1],
9474 splt->contents + 4);
9475 put_arm_insn (htab, output_bfd, plt0_entry[2],
9476 splt->contents + 8);
9477 bfd_put_32 (output_bfd, got_address, splt->contents + 12);
9479 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
9480 rel.r_offset = plt_address + 12;
9481 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
9483 SWAP_RELOC_OUT (htab) (output_bfd, &rel,
9484 htab->srelplt2->contents);
9488 got_displacement = got_address - (plt_address + 16);
9490 plt0_entry = elf32_arm_plt0_entry;
9491 put_arm_insn (htab, output_bfd, plt0_entry[0],
9492 splt->contents + 0);
9493 put_arm_insn (htab, output_bfd, plt0_entry[1],
9494 splt->contents + 4);
9495 put_arm_insn (htab, output_bfd, plt0_entry[2],
9496 splt->contents + 8);
9497 put_arm_insn (htab, output_bfd, plt0_entry[3],
9498 splt->contents + 12);
9500 #ifdef FOUR_WORD_PLT
9501 /* The displacement value goes in the otherwise-unused
9502 last word of the second entry. */
9503 bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
9505 bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
9510 /* UnixWare sets the entsize of .plt to 4, although that doesn't
9511 really seem like the right value. */
9512 if (splt->output_section->owner == output_bfd)
9513 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
9515 if (htab->vxworks_p && !info->shared && htab->splt->size > 0)
9517 /* Correct the .rel(a).plt.unloaded relocations. They will have
9518 incorrect symbol indexes. */
9522 num_plts = ((htab->splt->size - htab->plt_header_size)
9523 / htab->plt_entry_size);
9524 p = htab->srelplt2->contents + RELOC_SIZE (htab);
9526 for (; num_plts; num_plts--)
9528 Elf_Internal_Rela rel;
9530 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
9531 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
9532 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
9533 p += RELOC_SIZE (htab);
9535 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
9536 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
9537 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
9538 p += RELOC_SIZE (htab);
9543 /* Fill in the first three entries in the global offset table. */
9549 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
9551 bfd_put_32 (output_bfd,
9552 sdyn->output_section->vma + sdyn->output_offset,
9554 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
9555 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
9558 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
9565 elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
9567 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
9568 struct elf32_arm_link_hash_table *globals;
9570 i_ehdrp = elf_elfheader (abfd);
9572 if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
9573 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
9575 i_ehdrp->e_ident[EI_OSABI] = 0;
9576 i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
9580 globals = elf32_arm_hash_table (link_info);
9581 if (globals->byteswap_code)
9582 i_ehdrp->e_flags |= EF_ARM_BE8;
9586 static enum elf_reloc_type_class
9587 elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
9589 switch ((int) ELF32_R_TYPE (rela->r_info))
9591 case R_ARM_RELATIVE:
9592 return reloc_class_relative;
9593 case R_ARM_JUMP_SLOT:
9594 return reloc_class_plt;
9596 return reloc_class_copy;
9598 return reloc_class_normal;
9602 /* Set the right machine number for an Arm ELF file. */
9605 elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
9607 if (hdr->sh_type == SHT_NOTE)
9608 *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
9614 elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
9616 bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
9619 /* Return TRUE if this is an unwinding table entry. */
9622 is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
9624 return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind)
9625 || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once));
9629 /* Set the type and flags for an ARM section. We do this by
9630 the section name, which is a hack, but ought to work. */
9633 elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
9637 name = bfd_get_section_name (abfd, sec);
9639 if (is_arm_elf_unwind_section_name (abfd, name))
9641 hdr->sh_type = SHT_ARM_EXIDX;
9642 hdr->sh_flags |= SHF_LINK_ORDER;
9647 /* Handle an ARM specific section when reading an object file. This is
9648 called when bfd_section_from_shdr finds a section with an unknown
9652 elf32_arm_section_from_shdr (bfd *abfd,
9653 Elf_Internal_Shdr * hdr,
9657 /* There ought to be a place to keep ELF backend specific flags, but
9658 at the moment there isn't one. We just keep track of the
9659 sections by their name, instead. Fortunately, the ABI gives
9660 names for all the ARM specific sections, so we will probably get
9662 switch (hdr->sh_type)
9665 case SHT_ARM_PREEMPTMAP:
9666 case SHT_ARM_ATTRIBUTES:
9673 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
9679 /* A structure used to record a list of sections, independently
9680 of the next and prev fields in the asection structure. */
9681 typedef struct section_list
9684 struct section_list * next;
9685 struct section_list * prev;
9689 /* Unfortunately we need to keep a list of sections for which
9690 an _arm_elf_section_data structure has been allocated. This
9691 is because it is possible for functions like elf32_arm_write_section
9692 to be called on a section which has had an elf_data_structure
9693 allocated for it (and so the used_by_bfd field is valid) but
9694 for which the ARM extended version of this structure - the
9695 _arm_elf_section_data structure - has not been allocated. */
9696 static section_list * sections_with_arm_elf_section_data = NULL;
9699 record_section_with_arm_elf_section_data (asection * sec)
9701 struct section_list * entry;
9703 entry = bfd_malloc (sizeof (* entry));
9707 entry->next = sections_with_arm_elf_section_data;
9709 if (entry->next != NULL)
9710 entry->next->prev = entry;
9711 sections_with_arm_elf_section_data = entry;
9714 static struct section_list *
9715 find_arm_elf_section_entry (asection * sec)
9717 struct section_list * entry;
9718 static struct section_list * last_entry = NULL;
9720 /* This is a short cut for the typical case where the sections are added
9721 to the sections_with_arm_elf_section_data list in forward order and
9722 then looked up here in backwards order. This makes a real difference
9723 to the ld-srec/sec64k.exp linker test. */
9724 entry = sections_with_arm_elf_section_data;
9725 if (last_entry != NULL)
9727 if (last_entry->sec == sec)
9729 else if (last_entry->next != NULL
9730 && last_entry->next->sec == sec)
9731 entry = last_entry->next;
9734 for (; entry; entry = entry->next)
9735 if (entry->sec == sec)
9739 /* Record the entry prior to this one - it is the entry we are most
9740 likely to want to locate next time. Also this way if we have been
9741 called from unrecord_section_with_arm_elf_section_data() we will not
9742 be caching a pointer that is about to be freed. */
9743 last_entry = entry->prev;
9748 static _arm_elf_section_data *
9749 get_arm_elf_section_data (asection * sec)
9751 struct section_list * entry;
9753 entry = find_arm_elf_section_entry (sec);
9756 return elf32_arm_section_data (entry->sec);
9762 unrecord_section_with_arm_elf_section_data (asection * sec)
9764 struct section_list * entry;
9766 entry = find_arm_elf_section_entry (sec);
9770 if (entry->prev != NULL)
9771 entry->prev->next = entry->next;
9772 if (entry->next != NULL)
9773 entry->next->prev = entry->prev;
9774 if (entry == sections_with_arm_elf_section_data)
9775 sections_with_arm_elf_section_data = entry->next;
9784 struct bfd_link_info *info;
9787 bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *,
9788 asection *, struct elf_link_hash_entry *);
9789 } output_arch_syminfo;
9791 enum map_symbol_type
9799 /* Output a single PLT mapping symbol. */
9802 elf32_arm_ouput_plt_map_sym (output_arch_syminfo *osi,
9803 enum map_symbol_type type,
9806 static const char *names[3] = {"$a", "$t", "$d"};
9807 struct elf32_arm_link_hash_table *htab;
9808 Elf_Internal_Sym sym;
9810 htab = elf32_arm_hash_table (osi->info);
9811 sym.st_value = osi->sec->output_section->vma
9812 + osi->sec->output_offset
9816 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
9817 sym.st_shndx = osi->sec_shndx;
9818 if (!osi->func (osi->finfo, names[type], &sym, osi->sec, NULL))
9824 /* Output mapping symbols for PLT entries associated with H. */
9827 elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf)
9829 output_arch_syminfo *osi = (output_arch_syminfo *) inf;
9830 struct elf32_arm_link_hash_table *htab;
9831 struct elf32_arm_link_hash_entry *eh;
9834 htab = elf32_arm_hash_table (osi->info);
9836 if (h->root.type == bfd_link_hash_indirect)
9839 if (h->root.type == bfd_link_hash_warning)
9840 /* When warning symbols are created, they **replace** the "real"
9841 entry in the hash table, thus we never get to see the real
9842 symbol in a hash traversal. So look at it now. */
9843 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9845 if (h->plt.offset == (bfd_vma) -1)
9848 eh = (struct elf32_arm_link_hash_entry *) h;
9849 addr = h->plt.offset;
9850 if (htab->symbian_p)
9852 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9854 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 4))
9857 else if (htab->vxworks_p)
9859 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9861 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 8))
9863 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr + 12))
9865 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 20))
9870 bfd_signed_vma thumb_refs;
9872 thumb_refs = eh->plt_thumb_refcount;
9874 thumb_refs += eh->plt_maybe_thumb_refcount;
9878 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_THUMB, addr - 4))
9881 #ifdef FOUR_WORD_PLT
9882 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9884 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 12))
9887 /* A three-word PLT with no Thumb thunk contains only Arm code,
9888 so only need to output a mapping symbol for the first PLT entry and
9889 entries with thumb thunks. */
9890 if (thumb_refs > 0 || addr == 20)
9892 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9902 /* Output mapping symbols for linker generated sections. */
9905 elf32_arm_output_arch_local_syms (bfd *output_bfd,
9906 struct bfd_link_info *info,
9907 void *finfo, bfd_boolean (*func) (void *, const char *,
9910 struct elf_link_hash_entry *))
9912 output_arch_syminfo osi;
9913 struct elf32_arm_link_hash_table *htab;
9917 htab = elf32_arm_hash_table (info);
9918 check_use_blx(htab);
9924 /* ARM->Thumb glue. */
9925 if (htab->arm_glue_size > 0)
9927 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
9928 ARM2THUMB_GLUE_SECTION_NAME);
9930 osi.sec_shndx = _bfd_elf_section_from_bfd_section
9931 (output_bfd, osi.sec->output_section);
9932 if (info->shared || htab->root.is_relocatable_executable
9933 || htab->pic_veneer)
9934 size = ARM2THUMB_PIC_GLUE_SIZE;
9935 else if (htab->use_blx)
9936 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
9938 size = ARM2THUMB_STATIC_GLUE_SIZE;
9940 for (offset = 0; offset < htab->arm_glue_size; offset += size)
9942 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, offset);
9943 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, offset + size - 4);
9947 /* Thumb->ARM glue. */
9948 if (htab->thumb_glue_size > 0)
9950 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
9951 THUMB2ARM_GLUE_SECTION_NAME);
9953 osi.sec_shndx = _bfd_elf_section_from_bfd_section
9954 (output_bfd, osi.sec->output_section);
9955 size = THUMB2ARM_GLUE_SIZE;
9957 for (offset = 0; offset < htab->thumb_glue_size; offset += size)
9959 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_THUMB, offset);
9960 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, offset + 4);
9964 /* ARMv4 BX veneers. */
9965 if (htab->bx_glue_size > 0)
9967 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
9968 ARM_BX_GLUE_SECTION_NAME);
9970 osi.sec_shndx = _bfd_elf_section_from_bfd_section
9971 (output_bfd, osi.sec->output_section);
9973 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0);
9976 /* Finally, output mapping symbols for the PLT. */
9977 if (!htab->splt || htab->splt->size == 0)
9980 osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
9981 htab->splt->output_section);
9982 osi.sec = htab->splt;
9983 /* Output mapping symbols for the plt header. SymbianOS does not have a
9985 if (htab->vxworks_p)
9987 /* VxWorks shared libraries have no PLT header. */
9990 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0))
9992 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 12))
9996 else if (!htab->symbian_p)
9998 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0))
10000 #ifndef FOUR_WORD_PLT
10001 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 16))
10006 elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi);
10010 /* Allocate target specific section data. */
10013 elf32_arm_new_section_hook (bfd *abfd, asection *sec)
10015 if (!sec->used_by_bfd)
10017 _arm_elf_section_data *sdata;
10018 bfd_size_type amt = sizeof (*sdata);
10020 sdata = bfd_zalloc (abfd, amt);
10023 sec->used_by_bfd = sdata;
10026 record_section_with_arm_elf_section_data (sec);
10028 return _bfd_elf_new_section_hook (abfd, sec);
10032 /* Used to order a list of mapping symbols by address. */
10035 elf32_arm_compare_mapping (const void * a, const void * b)
10037 const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a;
10038 const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b;
10040 if (amap->vma > bmap->vma)
10042 else if (amap->vma < bmap->vma)
10044 else if (amap->type > bmap->type)
10045 /* Ensure results do not depend on the host qsort for objects with
10046 multiple mapping symbols at the same address by sorting on type
10049 else if (amap->type < bmap->type)
10056 /* Do code byteswapping. Return FALSE afterwards so that the section is
10057 written out as normal. */
10060 elf32_arm_write_section (bfd *output_bfd,
10061 struct bfd_link_info *link_info, asection *sec,
10062 bfd_byte *contents)
10064 int mapcount, errcount;
10065 _arm_elf_section_data *arm_data;
10066 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
10067 elf32_arm_section_map *map;
10068 elf32_vfp11_erratum_list *errnode;
10071 bfd_vma offset = sec->output_section->vma + sec->output_offset;
10075 /* If this section has not been allocated an _arm_elf_section_data
10076 structure then we cannot record anything. */
10077 arm_data = get_arm_elf_section_data (sec);
10078 if (arm_data == NULL)
10081 mapcount = arm_data->mapcount;
10082 map = arm_data->map;
10083 errcount = arm_data->erratumcount;
10087 unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0;
10089 for (errnode = arm_data->erratumlist; errnode != 0;
10090 errnode = errnode->next)
10092 bfd_vma index = errnode->vma - offset;
10094 switch (errnode->type)
10096 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
10098 bfd_vma branch_to_veneer;
10099 /* Original condition code of instruction, plus bit mask for
10100 ARM B instruction. */
10101 unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000)
10104 /* The instruction is before the label. */
10107 /* Above offset included in -4 below. */
10108 branch_to_veneer = errnode->u.b.veneer->vma
10109 - errnode->vma - 4;
10111 if ((signed) branch_to_veneer < -(1 << 25)
10112 || (signed) branch_to_veneer >= (1 << 25))
10113 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
10114 "range"), output_bfd);
10116 insn |= (branch_to_veneer >> 2) & 0xffffff;
10117 contents[endianflip ^ index] = insn & 0xff;
10118 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
10119 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
10120 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
10124 case VFP11_ERRATUM_ARM_VENEER:
10126 bfd_vma branch_from_veneer;
10129 /* Take size of veneer into account. */
10130 branch_from_veneer = errnode->u.v.branch->vma
10131 - errnode->vma - 12;
10133 if ((signed) branch_from_veneer < -(1 << 25)
10134 || (signed) branch_from_veneer >= (1 << 25))
10135 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
10136 "range"), output_bfd);
10138 /* Original instruction. */
10139 insn = errnode->u.v.branch->u.b.vfp_insn;
10140 contents[endianflip ^ index] = insn & 0xff;
10141 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
10142 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
10143 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
10145 /* Branch back to insn after original insn. */
10146 insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff);
10147 contents[endianflip ^ (index + 4)] = insn & 0xff;
10148 contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff;
10149 contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff;
10150 contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff;
10163 if (globals->byteswap_code)
10165 qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
10168 for (i = 0; i < mapcount; i++)
10170 if (i == mapcount - 1)
10173 end = map[i + 1].vma;
10175 switch (map[i].type)
10178 /* Byte swap code words. */
10179 while (ptr + 3 < end)
10181 tmp = contents[ptr];
10182 contents[ptr] = contents[ptr + 3];
10183 contents[ptr + 3] = tmp;
10184 tmp = contents[ptr + 1];
10185 contents[ptr + 1] = contents[ptr + 2];
10186 contents[ptr + 2] = tmp;
10192 /* Byte swap code halfwords. */
10193 while (ptr + 1 < end)
10195 tmp = contents[ptr];
10196 contents[ptr] = contents[ptr + 1];
10197 contents[ptr + 1] = tmp;
10203 /* Leave data alone. */
10211 arm_data->mapcount = 0;
10212 arm_data->mapsize = 0;
10213 arm_data->map = NULL;
10214 unrecord_section_with_arm_elf_section_data (sec);
10220 unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED,
10222 void * ignore ATTRIBUTE_UNUSED)
10224 unrecord_section_with_arm_elf_section_data (sec);
10228 elf32_arm_close_and_cleanup (bfd * abfd)
10230 if (abfd->sections)
10231 bfd_map_over_sections (abfd,
10232 unrecord_section_via_map_over_sections,
10235 return _bfd_elf_close_and_cleanup (abfd);
10239 elf32_arm_bfd_free_cached_info (bfd * abfd)
10241 if (abfd->sections)
10242 bfd_map_over_sections (abfd,
10243 unrecord_section_via_map_over_sections,
10246 return _bfd_free_cached_info (abfd);
10249 /* Display STT_ARM_TFUNC symbols as functions. */
10252 elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
10255 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
10257 if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC)
10258 elfsym->symbol.flags |= BSF_FUNCTION;
10262 /* Mangle thumb function symbols as we read them in. */
10265 elf32_arm_swap_symbol_in (bfd * abfd,
10268 Elf_Internal_Sym *dst)
10270 if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
10273 /* New EABI objects mark thumb function symbols by setting the low bit of
10274 the address. Turn these into STT_ARM_TFUNC. */
10275 if (ELF_ST_TYPE (dst->st_info) == STT_FUNC
10276 && (dst->st_value & 1))
10278 dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
10279 dst->st_value &= ~(bfd_vma) 1;
10285 /* Mangle thumb function symbols as we write them out. */
10288 elf32_arm_swap_symbol_out (bfd *abfd,
10289 const Elf_Internal_Sym *src,
10293 Elf_Internal_Sym newsym;
10295 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
10296 of the address set, as per the new EABI. We do this unconditionally
10297 because objcopy does not set the elf header flags until after
10298 it writes out the symbol table. */
10299 if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC)
10302 newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
10303 if (newsym.st_shndx != SHN_UNDEF)
10305 /* Do this only for defined symbols. At link type, the static
10306 linker will simulate the work of dynamic linker of resolving
10307 symbols and will carry over the thumbness of found symbols to
10308 the output symbol table. It's not clear how it happens, but
10309 the thumbness of undefined symbols can well be different at
10310 runtime, and writing '1' for them will be confusing for users
10311 and possibly for dynamic linker itself.
10313 newsym.st_value |= 1;
10318 bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
10321 /* Add the PT_ARM_EXIDX program header. */
10324 elf32_arm_modify_segment_map (bfd *abfd,
10325 struct bfd_link_info *info ATTRIBUTE_UNUSED)
10327 struct elf_segment_map *m;
10330 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
10331 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
10333 /* If there is already a PT_ARM_EXIDX header, then we do not
10334 want to add another one. This situation arises when running
10335 "strip"; the input binary already has the header. */
10336 m = elf_tdata (abfd)->segment_map;
10337 while (m && m->p_type != PT_ARM_EXIDX)
10341 m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
10344 m->p_type = PT_ARM_EXIDX;
10346 m->sections[0] = sec;
10348 m->next = elf_tdata (abfd)->segment_map;
10349 elf_tdata (abfd)->segment_map = m;
10356 /* We may add a PT_ARM_EXIDX program header. */
10359 elf32_arm_additional_program_headers (bfd *abfd,
10360 struct bfd_link_info *info ATTRIBUTE_UNUSED)
10364 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
10365 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
10371 /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
10373 elf32_arm_is_function_type (unsigned int type)
10375 return (type == STT_FUNC) || (type == STT_ARM_TFUNC);
10378 /* We use this to override swap_symbol_in and swap_symbol_out. */
10379 const struct elf_size_info elf32_arm_size_info = {
10380 sizeof (Elf32_External_Ehdr),
10381 sizeof (Elf32_External_Phdr),
10382 sizeof (Elf32_External_Shdr),
10383 sizeof (Elf32_External_Rel),
10384 sizeof (Elf32_External_Rela),
10385 sizeof (Elf32_External_Sym),
10386 sizeof (Elf32_External_Dyn),
10387 sizeof (Elf_External_Note),
10391 ELFCLASS32, EV_CURRENT,
10392 bfd_elf32_write_out_phdrs,
10393 bfd_elf32_write_shdrs_and_ehdr,
10394 bfd_elf32_checksum_contents,
10395 bfd_elf32_write_relocs,
10396 elf32_arm_swap_symbol_in,
10397 elf32_arm_swap_symbol_out,
10398 bfd_elf32_slurp_reloc_table,
10399 bfd_elf32_slurp_symbol_table,
10400 bfd_elf32_swap_dyn_in,
10401 bfd_elf32_swap_dyn_out,
10402 bfd_elf32_swap_reloc_in,
10403 bfd_elf32_swap_reloc_out,
10404 bfd_elf32_swap_reloca_in,
10405 bfd_elf32_swap_reloca_out
10408 #define ELF_ARCH bfd_arch_arm
10409 #define ELF_MACHINE_CODE EM_ARM
10410 #ifdef __QNXTARGET__
10411 #define ELF_MAXPAGESIZE 0x1000
10413 #define ELF_MAXPAGESIZE 0x8000
10415 #define ELF_MINPAGESIZE 0x1000
10416 #define ELF_COMMONPAGESIZE 0x1000
10418 #define bfd_elf32_mkobject elf32_arm_mkobject
10420 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
10421 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
10422 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
10423 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
10424 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
10425 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
10426 #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
10427 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
10428 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
10429 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
10430 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
10431 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
10432 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
10434 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
10435 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
10436 #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
10437 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
10438 #define elf_backend_check_relocs elf32_arm_check_relocs
10439 #define elf_backend_relocate_section elf32_arm_relocate_section
10440 #define elf_backend_write_section elf32_arm_write_section
10441 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
10442 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
10443 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
10444 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
10445 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
10446 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
10447 #define elf_backend_post_process_headers elf32_arm_post_process_headers
10448 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
10449 #define elf_backend_object_p elf32_arm_object_p
10450 #define elf_backend_section_flags elf32_arm_section_flags
10451 #define elf_backend_fake_sections elf32_arm_fake_sections
10452 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
10453 #define elf_backend_final_write_processing elf32_arm_final_write_processing
10454 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
10455 #define elf_backend_symbol_processing elf32_arm_symbol_processing
10456 #define elf_backend_size_info elf32_arm_size_info
10457 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
10458 #define elf_backend_additional_program_headers \
10459 elf32_arm_additional_program_headers
10460 #define elf_backend_output_arch_local_syms \
10461 elf32_arm_output_arch_local_syms
10462 #define elf_backend_begin_write_processing \
10463 elf32_arm_begin_write_processing
10464 #define elf_backend_is_function_type elf32_arm_is_function_type
10466 #define elf_backend_can_refcount 1
10467 #define elf_backend_can_gc_sections 1
10468 #define elf_backend_plt_readonly 1
10469 #define elf_backend_want_got_plt 1
10470 #define elf_backend_want_plt_sym 0
10471 #define elf_backend_may_use_rel_p 1
10472 #define elf_backend_may_use_rela_p 0
10473 #define elf_backend_default_use_rela_p 0
10475 #define elf_backend_got_header_size 12
10477 #undef elf_backend_obj_attrs_vendor
10478 #define elf_backend_obj_attrs_vendor "aeabi"
10479 #undef elf_backend_obj_attrs_section
10480 #define elf_backend_obj_attrs_section ".ARM.attributes"
10481 #undef elf_backend_obj_attrs_arg_type
10482 #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
10483 #undef elf_backend_obj_attrs_section_type
10484 #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
10486 #include "elf32-target.h"
10488 /* VxWorks Targets */
10490 #undef TARGET_LITTLE_SYM
10491 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
10492 #undef TARGET_LITTLE_NAME
10493 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
10494 #undef TARGET_BIG_SYM
10495 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
10496 #undef TARGET_BIG_NAME
10497 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
10499 /* Like elf32_arm_link_hash_table_create -- but overrides
10500 appropriately for VxWorks. */
10501 static struct bfd_link_hash_table *
10502 elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
10504 struct bfd_link_hash_table *ret;
10506 ret = elf32_arm_link_hash_table_create (abfd);
10509 struct elf32_arm_link_hash_table *htab
10510 = (struct elf32_arm_link_hash_table *) ret;
10512 htab->vxworks_p = 1;
10518 elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10520 elf32_arm_final_write_processing (abfd, linker);
10521 elf_vxworks_final_write_processing (abfd, linker);
10525 #define elf32_bed elf32_arm_vxworks_bed
10527 #undef bfd_elf32_bfd_link_hash_table_create
10528 #define bfd_elf32_bfd_link_hash_table_create \
10529 elf32_arm_vxworks_link_hash_table_create
10530 #undef elf_backend_add_symbol_hook
10531 #define elf_backend_add_symbol_hook \
10532 elf_vxworks_add_symbol_hook
10533 #undef elf_backend_final_write_processing
10534 #define elf_backend_final_write_processing \
10535 elf32_arm_vxworks_final_write_processing
10536 #undef elf_backend_emit_relocs
10537 #define elf_backend_emit_relocs \
10538 elf_vxworks_emit_relocs
10540 #undef elf_backend_may_use_rel_p
10541 #define elf_backend_may_use_rel_p 0
10542 #undef elf_backend_may_use_rela_p
10543 #define elf_backend_may_use_rela_p 1
10544 #undef elf_backend_default_use_rela_p
10545 #define elf_backend_default_use_rela_p 1
10546 #undef elf_backend_want_plt_sym
10547 #define elf_backend_want_plt_sym 1
10548 #undef ELF_MAXPAGESIZE
10549 #define ELF_MAXPAGESIZE 0x1000
10551 #include "elf32-target.h"
10554 /* Symbian OS Targets */
10556 #undef TARGET_LITTLE_SYM
10557 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
10558 #undef TARGET_LITTLE_NAME
10559 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
10560 #undef TARGET_BIG_SYM
10561 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
10562 #undef TARGET_BIG_NAME
10563 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
10565 /* Like elf32_arm_link_hash_table_create -- but overrides
10566 appropriately for Symbian OS. */
10567 static struct bfd_link_hash_table *
10568 elf32_arm_symbian_link_hash_table_create (bfd *abfd)
10570 struct bfd_link_hash_table *ret;
10572 ret = elf32_arm_link_hash_table_create (abfd);
10575 struct elf32_arm_link_hash_table *htab
10576 = (struct elf32_arm_link_hash_table *)ret;
10577 /* There is no PLT header for Symbian OS. */
10578 htab->plt_header_size = 0;
10579 /* The PLT entries are each three instructions. */
10580 htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry);
10581 htab->symbian_p = 1;
10582 /* Symbian uses armv5t or above, so use_blx is always true. */
10584 htab->root.is_relocatable_executable = 1;
10589 static const struct bfd_elf_special_section
10590 elf32_arm_symbian_special_sections[] =
10592 /* In a BPABI executable, the dynamic linking sections do not go in
10593 the loadable read-only segment. The post-linker may wish to
10594 refer to these sections, but they are not part of the final
10596 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 },
10597 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 },
10598 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 },
10599 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 },
10600 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 },
10601 /* These sections do not need to be writable as the SymbianOS
10602 postlinker will arrange things so that no dynamic relocation is
10604 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC },
10605 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC },
10606 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
10607 { NULL, 0, 0, 0, 0 }
10611 elf32_arm_symbian_begin_write_processing (bfd *abfd,
10612 struct bfd_link_info *link_info)
10614 /* BPABI objects are never loaded directly by an OS kernel; they are
10615 processed by a postlinker first, into an OS-specific format. If
10616 the D_PAGED bit is set on the file, BFD will align segments on
10617 page boundaries, so that an OS can directly map the file. With
10618 BPABI objects, that just results in wasted space. In addition,
10619 because we clear the D_PAGED bit, map_sections_to_segments will
10620 recognize that the program headers should not be mapped into any
10621 loadable segment. */
10622 abfd->flags &= ~D_PAGED;
10623 elf32_arm_begin_write_processing(abfd, link_info);
10627 elf32_arm_symbian_modify_segment_map (bfd *abfd,
10628 struct bfd_link_info *info)
10630 struct elf_segment_map *m;
10633 /* BPABI shared libraries and executables should have a PT_DYNAMIC
10634 segment. However, because the .dynamic section is not marked
10635 with SEC_LOAD, the generic ELF code will not create such a
10637 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
10640 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
10641 if (m->p_type == PT_DYNAMIC)
10646 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
10647 m->next = elf_tdata (abfd)->segment_map;
10648 elf_tdata (abfd)->segment_map = m;
10652 /* Also call the generic arm routine. */
10653 return elf32_arm_modify_segment_map (abfd, info);
10657 #define elf32_bed elf32_arm_symbian_bed
10659 /* The dynamic sections are not allocated on SymbianOS; the postlinker
10660 will process them and then discard them. */
10661 #undef ELF_DYNAMIC_SEC_FLAGS
10662 #define ELF_DYNAMIC_SEC_FLAGS \
10663 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
10665 #undef bfd_elf32_bfd_link_hash_table_create
10666 #define bfd_elf32_bfd_link_hash_table_create \
10667 elf32_arm_symbian_link_hash_table_create
10668 #undef elf_backend_add_symbol_hook
10670 #undef elf_backend_special_sections
10671 #define elf_backend_special_sections elf32_arm_symbian_special_sections
10673 #undef elf_backend_begin_write_processing
10674 #define elf_backend_begin_write_processing \
10675 elf32_arm_symbian_begin_write_processing
10676 #undef elf_backend_final_write_processing
10677 #define elf_backend_final_write_processing \
10678 elf32_arm_final_write_processing
10679 #undef elf_backend_emit_relocs
10681 #undef elf_backend_modify_segment_map
10682 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
10684 /* There is no .got section for BPABI objects, and hence no header. */
10685 #undef elf_backend_got_header_size
10686 #define elf_backend_got_header_size 0
10688 /* Similarly, there is no .got.plt section. */
10689 #undef elf_backend_want_got_plt
10690 #define elf_backend_want_got_plt 0
10692 #undef elf_backend_may_use_rel_p
10693 #define elf_backend_may_use_rel_p 1
10694 #undef elf_backend_may_use_rela_p
10695 #define elf_backend_may_use_rela_p 0
10696 #undef elf_backend_default_use_rela_p
10697 #define elf_backend_default_use_rela_p 0
10698 #undef elf_backend_want_plt_sym
10699 #define elf_backend_want_plt_sym 0
10700 #undef ELF_MAXPAGESIZE
10701 #define ELF_MAXPAGESIZE 0x8000
10703 #include "elf32-target.h"
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