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 0x0000ffff, /* src_mask */
700 0x0000ffff, /* 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 0x0000ffff, /* src_mask */
714 0x0000ffff, /* 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 0x0000ffff, /* src_mask */
728 0x0000ffff, /* 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 0x0000ffff, /* src_mask */
742 0x0000ffff, /* 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}
1779 static reloc_howto_type *
1780 elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1781 bfd_reloc_code_real_type code)
1784 for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
1785 if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
1786 return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
1791 static reloc_howto_type *
1792 elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1798 i < (sizeof (elf32_arm_howto_table_1)
1799 / sizeof (elf32_arm_howto_table_1[0]));
1801 if (elf32_arm_howto_table_1[i].name != NULL
1802 && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0)
1803 return &elf32_arm_howto_table_1[i];
1806 i < (sizeof (elf32_arm_howto_table_2)
1807 / sizeof (elf32_arm_howto_table_2[0]));
1809 if (elf32_arm_howto_table_2[i].name != NULL
1810 && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0)
1811 return &elf32_arm_howto_table_2[i];
1816 /* Support for core dump NOTE sections */
1818 elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1823 switch (note->descsz)
1828 case 148: /* Linux/ARM 32-bit*/
1830 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1833 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1842 /* Make a ".reg/999" section. */
1843 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1844 size, note->descpos + offset);
1848 elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1850 switch (note->descsz)
1855 case 124: /* Linux/ARM elf_prpsinfo */
1856 elf_tdata (abfd)->core_program
1857 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1858 elf_tdata (abfd)->core_command
1859 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1862 /* Note that for some reason, a spurious space is tacked
1863 onto the end of the args in some (at least one anyway)
1864 implementations, so strip it off if it exists. */
1867 char *command = elf_tdata (abfd)->core_command;
1868 int n = strlen (command);
1870 if (0 < n && command[n - 1] == ' ')
1871 command[n - 1] = '\0';
1877 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1878 #define TARGET_LITTLE_NAME "elf32-littlearm"
1879 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1880 #define TARGET_BIG_NAME "elf32-bigarm"
1882 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1883 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1885 typedef unsigned long int insn32;
1886 typedef unsigned short int insn16;
1888 /* In lieu of proper flags, assume all EABIv4 or later objects are
1890 #define INTERWORK_FLAG(abfd) \
1891 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1892 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1894 /* The linker script knows the section names for placement.
1895 The entry_names are used to do simple name mangling on the stubs.
1896 Given a function name, and its type, the stub can be found. The
1897 name can be changed. The only requirement is the %s be present. */
1898 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1899 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1901 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1902 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1904 #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1905 #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1907 /* The name of the dynamic interpreter. This is put in the .interp
1909 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1911 #ifdef FOUR_WORD_PLT
1913 /* The first entry in a procedure linkage table looks like
1914 this. It is set up so that any shared library function that is
1915 called before the relocation has been set up calls the dynamic
1917 static const bfd_vma elf32_arm_plt0_entry [] =
1919 0xe52de004, /* str lr, [sp, #-4]! */
1920 0xe59fe010, /* ldr lr, [pc, #16] */
1921 0xe08fe00e, /* add lr, pc, lr */
1922 0xe5bef008, /* ldr pc, [lr, #8]! */
1925 /* Subsequent entries in a procedure linkage table look like
1927 static const bfd_vma elf32_arm_plt_entry [] =
1929 0xe28fc600, /* add ip, pc, #NN */
1930 0xe28cca00, /* add ip, ip, #NN */
1931 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1932 0x00000000, /* unused */
1937 /* The first entry in a procedure linkage table looks like
1938 this. It is set up so that any shared library function that is
1939 called before the relocation has been set up calls the dynamic
1941 static const bfd_vma elf32_arm_plt0_entry [] =
1943 0xe52de004, /* str lr, [sp, #-4]! */
1944 0xe59fe004, /* ldr lr, [pc, #4] */
1945 0xe08fe00e, /* add lr, pc, lr */
1946 0xe5bef008, /* ldr pc, [lr, #8]! */
1947 0x00000000, /* &GOT[0] - . */
1950 /* Subsequent entries in a procedure linkage table look like
1952 static const bfd_vma elf32_arm_plt_entry [] =
1954 0xe28fc600, /* add ip, pc, #0xNN00000 */
1955 0xe28cca00, /* add ip, ip, #0xNN000 */
1956 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1961 /* The format of the first entry in the procedure linkage table
1962 for a VxWorks executable. */
1963 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] =
1965 0xe52dc008, /* str ip,[sp,#-8]! */
1966 0xe59fc000, /* ldr ip,[pc] */
1967 0xe59cf008, /* ldr pc,[ip,#8] */
1968 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1971 /* The format of subsequent entries in a VxWorks executable. */
1972 static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] =
1974 0xe59fc000, /* ldr ip,[pc] */
1975 0xe59cf000, /* ldr pc,[ip] */
1976 0x00000000, /* .long @got */
1977 0xe59fc000, /* ldr ip,[pc] */
1978 0xea000000, /* b _PLT */
1979 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1982 /* The format of entries in a VxWorks shared library. */
1983 static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] =
1985 0xe59fc000, /* ldr ip,[pc] */
1986 0xe79cf009, /* ldr pc,[ip,r9] */
1987 0x00000000, /* .long @got */
1988 0xe59fc000, /* ldr ip,[pc] */
1989 0xe599f008, /* ldr pc,[r9,#8] */
1990 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1993 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1994 #define PLT_THUMB_STUB_SIZE 4
1995 static const bfd_vma elf32_arm_plt_thumb_stub [] =
2001 /* The entries in a PLT when using a DLL-based target with multiple
2003 static const bfd_vma elf32_arm_symbian_plt_entry [] =
2005 0xe51ff004, /* ldr pc, [pc, #-4] */
2006 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2009 /* Used to build a map of a section. This is required for mixed-endian
2012 typedef struct elf32_elf_section_map
2017 elf32_arm_section_map;
2019 /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2023 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER,
2024 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER,
2025 VFP11_ERRATUM_ARM_VENEER,
2026 VFP11_ERRATUM_THUMB_VENEER
2028 elf32_vfp11_erratum_type;
2030 typedef struct elf32_vfp11_erratum_list
2032 struct elf32_vfp11_erratum_list *next;
2038 struct elf32_vfp11_erratum_list *veneer;
2039 unsigned int vfp_insn;
2043 struct elf32_vfp11_erratum_list *branch;
2047 elf32_vfp11_erratum_type type;
2049 elf32_vfp11_erratum_list;
2051 typedef struct _arm_elf_section_data
2053 struct bfd_elf_section_data elf;
2054 unsigned int mapcount;
2055 unsigned int mapsize;
2056 elf32_arm_section_map *map;
2057 unsigned int erratumcount;
2058 elf32_vfp11_erratum_list *erratumlist;
2060 _arm_elf_section_data;
2062 #define elf32_arm_section_data(sec) \
2063 ((_arm_elf_section_data *) elf_section_data (sec))
2065 /* The size of the thread control block. */
2068 struct elf_arm_obj_tdata
2070 struct elf_obj_tdata root;
2072 /* tls_type for each local got entry. */
2073 char *local_got_tls_type;
2075 /* Zero to warn when linking objects with incompatible enum sizes. */
2076 int no_enum_size_warning;
2079 #define elf_arm_tdata(bfd) \
2080 ((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
2082 #define elf32_arm_local_got_tls_type(bfd) \
2083 (elf_arm_tdata (bfd)->local_got_tls_type)
2085 #define is_arm_elf(bfd) \
2086 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2087 && elf_tdata (bfd) != NULL \
2088 && elf_object_id (bfd) == ARM_ELF_TDATA)
2091 elf32_arm_mkobject (bfd *abfd)
2093 return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata),
2097 /* The ARM linker needs to keep track of the number of relocs that it
2098 decides to copy in check_relocs for each symbol. This is so that
2099 it can discard PC relative relocs if it doesn't need them when
2100 linking with -Bsymbolic. We store the information in a field
2101 extending the regular ELF linker hash table. */
2103 /* This structure keeps track of the number of relocs we have copied
2104 for a given symbol. */
2105 struct elf32_arm_relocs_copied
2108 struct elf32_arm_relocs_copied * next;
2109 /* A section in dynobj. */
2111 /* Number of relocs copied in this section. */
2112 bfd_size_type count;
2113 /* Number of PC-relative relocs copied in this section. */
2114 bfd_size_type pc_count;
2117 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2119 /* Arm ELF linker hash entry. */
2120 struct elf32_arm_link_hash_entry
2122 struct elf_link_hash_entry root;
2124 /* Number of PC relative relocs copied for this symbol. */
2125 struct elf32_arm_relocs_copied * relocs_copied;
2127 /* We reference count Thumb references to a PLT entry separately,
2128 so that we can emit the Thumb trampoline only if needed. */
2129 bfd_signed_vma plt_thumb_refcount;
2131 /* Some references from Thumb code may be eliminated by BL->BLX
2132 conversion, so record them separately. */
2133 bfd_signed_vma plt_maybe_thumb_refcount;
2135 /* Since PLT entries have variable size if the Thumb prologue is
2136 used, we need to record the index into .got.plt instead of
2137 recomputing it from the PLT offset. */
2138 bfd_signed_vma plt_got_offset;
2140 #define GOT_UNKNOWN 0
2141 #define GOT_NORMAL 1
2142 #define GOT_TLS_GD 2
2143 #define GOT_TLS_IE 4
2144 unsigned char tls_type;
2146 /* The symbol marking the real symbol location for exported thumb
2147 symbols with Arm stubs. */
2148 struct elf_link_hash_entry *export_glue;
2151 /* Traverse an arm ELF linker hash table. */
2152 #define elf32_arm_link_hash_traverse(table, func, info) \
2153 (elf_link_hash_traverse \
2155 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2158 /* Get the ARM elf linker hash table from a link_info structure. */
2159 #define elf32_arm_hash_table(info) \
2160 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2162 /* ARM ELF linker hash table. */
2163 struct elf32_arm_link_hash_table
2165 /* The main hash table. */
2166 struct elf_link_hash_table root;
2168 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2169 bfd_size_type thumb_glue_size;
2171 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2172 bfd_size_type arm_glue_size;
2174 /* The size in bytes of the section containing glue for VFP11 erratum
2176 bfd_size_type vfp11_erratum_glue_size;
2178 /* An arbitrary input BFD chosen to hold the glue sections. */
2179 bfd * bfd_of_glue_owner;
2181 /* Nonzero to output a BE8 image. */
2184 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2185 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2188 /* The relocation to use for R_ARM_TARGET2 relocations. */
2191 /* Nonzero to fix BX instructions for ARMv4 targets. */
2194 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2197 /* What sort of code sequences we should look for which may trigger the
2198 VFP11 denorm erratum. */
2199 bfd_arm_vfp11_fix vfp11_fix;
2201 /* Global counter for the number of fixes we have emitted. */
2202 int num_vfp11_fixes;
2204 /* Nonzero to force PIC branch veneers. */
2207 /* The number of bytes in the initial entry in the PLT. */
2208 bfd_size_type plt_header_size;
2210 /* The number of bytes in the subsequent PLT etries. */
2211 bfd_size_type plt_entry_size;
2213 /* True if the target system is VxWorks. */
2216 /* True if the target system is Symbian OS. */
2219 /* True if the target uses REL relocations. */
2222 /* Short-cuts to get to dynamic linker sections. */
2231 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2234 /* Data for R_ARM_TLS_LDM32 relocations. */
2236 bfd_signed_vma refcount;
2240 /* Small local sym to section mapping cache. */
2241 struct sym_sec_cache sym_sec;
2243 /* For convenience in allocate_dynrelocs. */
2247 /* Create an entry in an ARM ELF linker hash table. */
2249 static struct bfd_hash_entry *
2250 elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
2251 struct bfd_hash_table * table,
2252 const char * string)
2254 struct elf32_arm_link_hash_entry * ret =
2255 (struct elf32_arm_link_hash_entry *) entry;
2257 /* Allocate the structure if it has not already been allocated by a
2259 if (ret == (struct elf32_arm_link_hash_entry *) NULL)
2260 ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
2262 return (struct bfd_hash_entry *) ret;
2264 /* Call the allocation method of the superclass. */
2265 ret = ((struct elf32_arm_link_hash_entry *)
2266 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2270 ret->relocs_copied = NULL;
2271 ret->tls_type = GOT_UNKNOWN;
2272 ret->plt_thumb_refcount = 0;
2273 ret->plt_maybe_thumb_refcount = 0;
2274 ret->plt_got_offset = -1;
2275 ret->export_glue = NULL;
2278 return (struct bfd_hash_entry *) ret;
2281 /* Return true if NAME is the name of the relocation section associated
2285 reloc_section_p (struct elf32_arm_link_hash_table *htab,
2286 const char *name, asection *s)
2289 return CONST_STRNEQ (name, ".rel") && strcmp (s->name, name + 4) == 0;
2291 return CONST_STRNEQ (name, ".rela") && strcmp (s->name, name + 5) == 0;
2294 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2295 shortcuts to them in our hash table. */
2298 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2300 struct elf32_arm_link_hash_table *htab;
2302 htab = elf32_arm_hash_table (info);
2303 /* BPABI objects never have a GOT, or associated sections. */
2304 if (htab->symbian_p)
2307 if (! _bfd_elf_create_got_section (dynobj, info))
2310 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2311 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2312 if (!htab->sgot || !htab->sgotplt)
2315 htab->srelgot = bfd_make_section_with_flags (dynobj,
2316 RELOC_SECTION (htab, ".got"),
2317 (SEC_ALLOC | SEC_LOAD
2320 | SEC_LINKER_CREATED
2322 if (htab->srelgot == NULL
2323 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
2328 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2329 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2333 elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
2335 struct elf32_arm_link_hash_table *htab;
2337 htab = elf32_arm_hash_table (info);
2338 if (!htab->sgot && !create_got_section (dynobj, info))
2341 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2344 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
2345 htab->srelplt = bfd_get_section_by_name (dynobj,
2346 RELOC_SECTION (htab, ".plt"));
2347 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2349 htab->srelbss = bfd_get_section_by_name (dynobj,
2350 RELOC_SECTION (htab, ".bss"));
2352 if (htab->vxworks_p)
2354 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
2359 htab->plt_header_size = 0;
2360 htab->plt_entry_size
2361 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry);
2365 htab->plt_header_size
2366 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry);
2367 htab->plt_entry_size
2368 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry);
2375 || (!info->shared && !htab->srelbss))
2381 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2384 elf32_arm_copy_indirect_symbol (struct bfd_link_info *info,
2385 struct elf_link_hash_entry *dir,
2386 struct elf_link_hash_entry *ind)
2388 struct elf32_arm_link_hash_entry *edir, *eind;
2390 edir = (struct elf32_arm_link_hash_entry *) dir;
2391 eind = (struct elf32_arm_link_hash_entry *) ind;
2393 if (eind->relocs_copied != NULL)
2395 if (edir->relocs_copied != NULL)
2397 struct elf32_arm_relocs_copied **pp;
2398 struct elf32_arm_relocs_copied *p;
2400 /* Add reloc counts against the indirect sym to the direct sym
2401 list. Merge any entries against the same section. */
2402 for (pp = &eind->relocs_copied; (p = *pp) != NULL; )
2404 struct elf32_arm_relocs_copied *q;
2406 for (q = edir->relocs_copied; q != NULL; q = q->next)
2407 if (q->section == p->section)
2409 q->pc_count += p->pc_count;
2410 q->count += p->count;
2417 *pp = edir->relocs_copied;
2420 edir->relocs_copied = eind->relocs_copied;
2421 eind->relocs_copied = NULL;
2424 if (ind->root.type == bfd_link_hash_indirect)
2426 /* Copy over PLT info. */
2427 edir->plt_thumb_refcount += eind->plt_thumb_refcount;
2428 eind->plt_thumb_refcount = 0;
2429 edir->plt_maybe_thumb_refcount += eind->plt_maybe_thumb_refcount;
2430 eind->plt_maybe_thumb_refcount = 0;
2432 if (dir->got.refcount <= 0)
2434 edir->tls_type = eind->tls_type;
2435 eind->tls_type = GOT_UNKNOWN;
2439 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2442 /* Create an ARM elf linker hash table. */
2444 static struct bfd_link_hash_table *
2445 elf32_arm_link_hash_table_create (bfd *abfd)
2447 struct elf32_arm_link_hash_table *ret;
2448 bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
2450 ret = bfd_malloc (amt);
2454 if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
2455 elf32_arm_link_hash_newfunc,
2456 sizeof (struct elf32_arm_link_hash_entry)))
2463 ret->sgotplt = NULL;
2464 ret->srelgot = NULL;
2466 ret->srelplt = NULL;
2467 ret->sdynbss = NULL;
2468 ret->srelbss = NULL;
2469 ret->srelplt2 = NULL;
2470 ret->thumb_glue_size = 0;
2471 ret->arm_glue_size = 0;
2472 ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
2473 ret->vfp11_erratum_glue_size = 0;
2474 ret->num_vfp11_fixes = 0;
2475 ret->bfd_of_glue_owner = NULL;
2476 ret->byteswap_code = 0;
2477 ret->target1_is_rel = 0;
2478 ret->target2_reloc = R_ARM_NONE;
2479 #ifdef FOUR_WORD_PLT
2480 ret->plt_header_size = 16;
2481 ret->plt_entry_size = 16;
2483 ret->plt_header_size = 20;
2484 ret->plt_entry_size = 12;
2491 ret->sym_sec.abfd = NULL;
2493 ret->tls_ldm_got.refcount = 0;
2495 return &ret->root.root;
2498 /* Locate the Thumb encoded calling stub for NAME. */
2500 static struct elf_link_hash_entry *
2501 find_thumb_glue (struct bfd_link_info *link_info,
2503 char **error_message)
2506 struct elf_link_hash_entry *hash;
2507 struct elf32_arm_link_hash_table *hash_table;
2509 /* We need a pointer to the armelf specific hash table. */
2510 hash_table = elf32_arm_hash_table (link_info);
2512 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2513 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
2515 BFD_ASSERT (tmp_name);
2517 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
2519 hash = elf_link_hash_lookup
2520 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
2523 && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"),
2524 tmp_name, name) == -1)
2525 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
2532 /* Locate the ARM encoded calling stub for NAME. */
2534 static struct elf_link_hash_entry *
2535 find_arm_glue (struct bfd_link_info *link_info,
2537 char **error_message)
2540 struct elf_link_hash_entry *myh;
2541 struct elf32_arm_link_hash_table *hash_table;
2543 /* We need a pointer to the elfarm specific hash table. */
2544 hash_table = elf32_arm_hash_table (link_info);
2546 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2547 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
2549 BFD_ASSERT (tmp_name);
2551 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
2553 myh = elf_link_hash_lookup
2554 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
2557 && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"),
2558 tmp_name, name) == -1)
2559 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
2566 /* ARM->Thumb glue (static images):
2570 ldr r12, __func_addr
2573 .word func @ behave as if you saw a ARM_32 reloc.
2580 .word func @ behave as if you saw a ARM_32 reloc.
2582 (relocatable images)
2585 ldr r12, __func_offset
2592 #define ARM2THUMB_STATIC_GLUE_SIZE 12
2593 static const insn32 a2t1_ldr_insn = 0xe59fc000;
2594 static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
2595 static const insn32 a2t3_func_addr_insn = 0x00000001;
2597 #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
2598 static const insn32 a2t1v5_ldr_insn = 0xe51ff004;
2599 static const insn32 a2t2v5_func_addr_insn = 0x00000001;
2601 #define ARM2THUMB_PIC_GLUE_SIZE 16
2602 static const insn32 a2t1p_ldr_insn = 0xe59fc004;
2603 static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
2604 static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
2606 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
2610 __func_from_thumb: __func_from_thumb:
2612 nop ldr r6, __func_addr
2614 __func_change_to_arm: bx r6
2616 __func_back_to_thumb:
2622 #define THUMB2ARM_GLUE_SIZE 8
2623 static const insn16 t2a1_bx_pc_insn = 0x4778;
2624 static const insn16 t2a2_noop_insn = 0x46c0;
2625 static const insn32 t2a3_b_insn = 0xea000000;
2627 #define VFP11_ERRATUM_VENEER_SIZE 8
2629 #ifndef ELFARM_NABI_C_INCLUDED
2631 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
2635 struct elf32_arm_link_hash_table * globals;
2637 globals = elf32_arm_hash_table (info);
2639 BFD_ASSERT (globals != NULL);
2641 if (globals->arm_glue_size != 0)
2643 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2645 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
2646 ARM2THUMB_GLUE_SECTION_NAME);
2648 BFD_ASSERT (s != NULL);
2650 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size);
2652 BFD_ASSERT (s->size == globals->arm_glue_size);
2656 if (globals->thumb_glue_size != 0)
2658 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2660 s = bfd_get_section_by_name
2661 (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
2663 BFD_ASSERT (s != NULL);
2665 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size);
2667 BFD_ASSERT (s->size == globals->thumb_glue_size);
2671 if (globals->vfp11_erratum_glue_size != 0)
2673 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2675 s = bfd_get_section_by_name
2676 (globals->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
2678 BFD_ASSERT (s != NULL);
2680 foo = bfd_alloc (globals->bfd_of_glue_owner,
2681 globals->vfp11_erratum_glue_size);
2683 BFD_ASSERT (s->size == globals->vfp11_erratum_glue_size);
2690 /* Allocate space and symbols for calling a Thumb function from Arm mode.
2691 returns the symbol identifying teh stub. */
2692 static struct elf_link_hash_entry *
2693 record_arm_to_thumb_glue (struct bfd_link_info * link_info,
2694 struct elf_link_hash_entry * h)
2696 const char * name = h->root.root.string;
2699 struct elf_link_hash_entry * myh;
2700 struct bfd_link_hash_entry * bh;
2701 struct elf32_arm_link_hash_table * globals;
2705 globals = elf32_arm_hash_table (link_info);
2707 BFD_ASSERT (globals != NULL);
2708 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2710 s = bfd_get_section_by_name
2711 (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
2713 BFD_ASSERT (s != NULL);
2715 tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
2717 BFD_ASSERT (tmp_name);
2719 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
2721 myh = elf_link_hash_lookup
2722 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
2726 /* We've already seen this guy. */
2731 /* The only trick here is using hash_table->arm_glue_size as the value.
2732 Even though the section isn't allocated yet, this is where we will be
2735 val = globals->arm_glue_size + 1;
2736 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
2737 tmp_name, BSF_GLOBAL, s, val,
2738 NULL, TRUE, FALSE, &bh);
2740 myh = (struct elf_link_hash_entry *) bh;
2741 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
2742 myh->forced_local = 1;
2746 if (link_info->shared || globals->root.is_relocatable_executable
2747 || globals->pic_veneer)
2748 size = ARM2THUMB_PIC_GLUE_SIZE;
2749 else if (globals->use_blx)
2750 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
2752 size = ARM2THUMB_STATIC_GLUE_SIZE;
2755 globals->arm_glue_size += size;
2761 record_thumb_to_arm_glue (struct bfd_link_info *link_info,
2762 struct elf_link_hash_entry *h)
2764 const char *name = h->root.root.string;
2767 struct elf_link_hash_entry *myh;
2768 struct bfd_link_hash_entry *bh;
2769 struct elf32_arm_link_hash_table *hash_table;
2772 hash_table = elf32_arm_hash_table (link_info);
2774 BFD_ASSERT (hash_table != NULL);
2775 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
2777 s = bfd_get_section_by_name
2778 (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
2780 BFD_ASSERT (s != NULL);
2782 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2783 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
2785 BFD_ASSERT (tmp_name);
2787 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
2789 myh = elf_link_hash_lookup
2790 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
2794 /* We've already seen this guy. */
2800 val = hash_table->thumb_glue_size + 1;
2801 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2802 tmp_name, BSF_GLOBAL, s, val,
2803 NULL, TRUE, FALSE, &bh);
2805 /* If we mark it 'Thumb', the disassembler will do a better job. */
2806 myh = (struct elf_link_hash_entry *) bh;
2807 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
2808 myh->forced_local = 1;
2812 #define CHANGE_TO_ARM "__%s_change_to_arm"
2813 #define BACK_FROM_ARM "__%s_back_from_arm"
2815 /* Allocate another symbol to mark where we switch to Arm mode. */
2816 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2817 + strlen (CHANGE_TO_ARM) + 1);
2819 BFD_ASSERT (tmp_name);
2821 sprintf (tmp_name, CHANGE_TO_ARM, name);
2824 val = hash_table->thumb_glue_size + 4,
2825 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2826 tmp_name, BSF_LOCAL, s, val,
2827 NULL, TRUE, FALSE, &bh);
2831 s->size += THUMB2ARM_GLUE_SIZE;
2832 hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
2838 /* Add an entry to the code/data map for section SEC. */
2841 elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma)
2843 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
2844 unsigned int newidx;
2846 if (sec_data->map == NULL)
2848 sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map));
2849 sec_data->mapcount = 0;
2850 sec_data->mapsize = 1;
2853 newidx = sec_data->mapcount++;
2855 if (sec_data->mapcount > sec_data->mapsize)
2857 sec_data->mapsize *= 2;
2858 sec_data->map = bfd_realloc (sec_data->map, sec_data->mapsize
2859 * sizeof (elf32_arm_section_map));
2862 sec_data->map[newidx].vma = vma;
2863 sec_data->map[newidx].type = type;
2867 /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
2868 veneers are handled for now. */
2871 record_vfp11_erratum_veneer (struct bfd_link_info *link_info,
2872 elf32_vfp11_erratum_list *branch,
2874 asection *branch_sec,
2875 unsigned int offset)
2878 struct elf32_arm_link_hash_table *hash_table;
2880 struct elf_link_hash_entry *myh;
2881 struct bfd_link_hash_entry *bh;
2883 struct _arm_elf_section_data *sec_data;
2885 elf32_vfp11_erratum_list *newerr;
2887 hash_table = elf32_arm_hash_table (link_info);
2889 BFD_ASSERT (hash_table != NULL);
2890 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
2892 s = bfd_get_section_by_name
2893 (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
2895 sec_data = elf32_arm_section_data (s);
2897 BFD_ASSERT (s != NULL);
2899 tmp_name = bfd_malloc ((bfd_size_type) strlen
2900 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
2902 BFD_ASSERT (tmp_name);
2904 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
2905 hash_table->num_vfp11_fixes);
2907 myh = elf_link_hash_lookup
2908 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
2910 BFD_ASSERT (myh == NULL);
2913 val = hash_table->vfp11_erratum_glue_size;
2914 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2915 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
2916 NULL, TRUE, FALSE, &bh);
2918 myh = (struct elf_link_hash_entry *) bh;
2919 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
2920 myh->forced_local = 1;
2922 /* Link veneer back to calling location. */
2923 errcount = ++(sec_data->erratumcount);
2924 newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
2926 newerr->type = VFP11_ERRATUM_ARM_VENEER;
2928 newerr->u.v.branch = branch;
2929 newerr->u.v.id = hash_table->num_vfp11_fixes;
2930 branch->u.b.veneer = newerr;
2932 newerr->next = sec_data->erratumlist;
2933 sec_data->erratumlist = newerr;
2935 /* A symbol for the return from the veneer. */
2936 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
2937 hash_table->num_vfp11_fixes);
2939 myh = elf_link_hash_lookup
2940 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
2947 _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL,
2948 branch_sec, val, NULL, TRUE, FALSE, &bh);
2950 myh = (struct elf_link_hash_entry *) bh;
2951 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
2952 myh->forced_local = 1;
2956 /* Generate a mapping symbol for the veneer section, and explicitly add an
2957 entry for that symbol to the code/data map for the section. */
2958 if (hash_table->vfp11_erratum_glue_size == 0)
2961 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
2962 ever requires this erratum fix. */
2963 _bfd_generic_link_add_one_symbol (link_info,
2964 hash_table->bfd_of_glue_owner, "$a",
2965 BSF_LOCAL, s, 0, NULL,
2968 myh = (struct elf_link_hash_entry *) bh;
2969 myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
2970 myh->forced_local = 1;
2972 /* The elf32_arm_init_maps function only cares about symbols from input
2973 BFDs. We must make a note of this generated mapping symbol
2974 ourselves so that code byteswapping works properly in
2975 elf32_arm_write_section. */
2976 elf32_arm_section_map_add (s, 'a', 0);
2979 s->size += VFP11_ERRATUM_VENEER_SIZE;
2980 hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE;
2981 hash_table->num_vfp11_fixes++;
2983 /* The offset of the veneer. */
2987 /* Add the glue sections to ABFD. This function is called from the
2988 linker scripts in ld/emultempl/{armelf}.em. */
2991 bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
2992 struct bfd_link_info *info)
2997 /* If we are only performing a partial
2998 link do not bother adding the glue. */
2999 if (info->relocatable)
3002 sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME);
3006 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
3007 will prevent elf_link_input_bfd() from processing the contents
3009 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3010 | SEC_CODE | SEC_READONLY);
3012 sec = bfd_make_section_with_flags (abfd,
3013 ARM2THUMB_GLUE_SECTION_NAME,
3017 || !bfd_set_section_alignment (abfd, sec, 2))
3020 /* Set the gc mark to prevent the section from being removed by garbage
3021 collection, despite the fact that no relocs refer to this section. */
3025 sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME);
3029 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3030 | SEC_CODE | SEC_READONLY);
3032 sec = bfd_make_section_with_flags (abfd,
3033 THUMB2ARM_GLUE_SECTION_NAME,
3037 || !bfd_set_section_alignment (abfd, sec, 2))
3043 sec = bfd_get_section_by_name (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME);
3047 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3048 | SEC_CODE | SEC_READONLY);
3050 sec = bfd_make_section_with_flags (abfd,
3051 VFP11_ERRATUM_VENEER_SECTION_NAME,
3055 || !bfd_set_section_alignment (abfd, sec, 2))
3064 /* Select a BFD to be used to hold the sections used by the glue code.
3065 This function is called from the linker scripts in ld/emultempl/
3069 bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
3071 struct elf32_arm_link_hash_table *globals;
3073 /* If we are only performing a partial link
3074 do not bother getting a bfd to hold the glue. */
3075 if (info->relocatable)
3078 /* Make sure we don't attach the glue sections to a dynamic object. */
3079 BFD_ASSERT (!(abfd->flags & DYNAMIC));
3081 globals = elf32_arm_hash_table (info);
3083 BFD_ASSERT (globals != NULL);
3085 if (globals->bfd_of_glue_owner != NULL)
3088 /* Save the bfd for later use. */
3089 globals->bfd_of_glue_owner = abfd;
3094 static void check_use_blx(struct elf32_arm_link_hash_table *globals)
3096 if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
3098 globals->use_blx = 1;
3102 bfd_elf32_arm_process_before_allocation (bfd *abfd,
3103 struct bfd_link_info *link_info)
3105 Elf_Internal_Shdr *symtab_hdr;
3106 Elf_Internal_Rela *internal_relocs = NULL;
3107 Elf_Internal_Rela *irel, *irelend;
3108 bfd_byte *contents = NULL;
3111 struct elf32_arm_link_hash_table *globals;
3113 /* If we are only performing a partial link do not bother
3114 to construct any glue. */
3115 if (link_info->relocatable)
3118 /* Here we have a bfd that is to be included on the link. We have a
3119 hook to do reloc rummaging, before section sizes are nailed down. */
3120 globals = elf32_arm_hash_table (link_info);
3122 BFD_ASSERT (globals != NULL);
3124 check_use_blx (globals);
3126 if (globals->byteswap_code && !bfd_big_endian (abfd))
3128 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
3133 /* PR 5398: If we have not decided to include any loadable sections in
3134 the output then we will not have a glue owner bfd. This is OK, it
3135 just means that there is nothing else for us to do here. */
3136 if (globals->bfd_of_glue_owner == NULL)
3139 /* Rummage around all the relocs and map the glue vectors. */
3140 sec = abfd->sections;
3145 for (; sec != NULL; sec = sec->next)
3147 if (sec->reloc_count == 0)
3150 if ((sec->flags & SEC_EXCLUDE) != 0)
3153 symtab_hdr = & elf_symtab_hdr (abfd);
3155 /* Load the relocs. */
3157 = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL,
3158 (Elf_Internal_Rela *) NULL, FALSE);
3160 if (internal_relocs == NULL)
3163 irelend = internal_relocs + sec->reloc_count;
3164 for (irel = internal_relocs; irel < irelend; irel++)
3167 unsigned long r_index;
3169 struct elf_link_hash_entry *h;
3171 r_type = ELF32_R_TYPE (irel->r_info);
3172 r_index = ELF32_R_SYM (irel->r_info);
3174 /* These are the only relocation types we care about. */
3175 if ( r_type != R_ARM_PC24
3176 && r_type != R_ARM_PLT32
3177 && r_type != R_ARM_CALL
3178 && r_type != R_ARM_JUMP24
3179 && r_type != R_ARM_THM_CALL
3180 && r_type != R_ARM_THM_JUMP24)
3183 /* Get the section contents if we haven't done so already. */
3184 if (contents == NULL)
3186 /* Get cached copy if it exists. */
3187 if (elf_section_data (sec)->this_hdr.contents != NULL)
3188 contents = elf_section_data (sec)->this_hdr.contents;
3191 /* Go get them off disk. */
3192 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
3197 /* If the relocation is not against a symbol it cannot concern us. */
3200 /* We don't care about local symbols. */
3201 if (r_index < symtab_hdr->sh_info)
3204 /* This is an external symbol. */
3205 r_index -= symtab_hdr->sh_info;
3206 h = (struct elf_link_hash_entry *)
3207 elf_sym_hashes (abfd)[r_index];
3209 /* If the relocation is against a static symbol it must be within
3210 the current section and so cannot be a cross ARM/Thumb relocation. */
3214 /* If the call will go through a PLT entry then we do not need
3216 if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1)
3225 /* This one is a call from arm code. We need to look up
3226 the target of the call. If it is a thumb target, we
3228 if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC
3229 && !(r_type == R_ARM_CALL && globals->use_blx))
3230 record_arm_to_thumb_glue (link_info, h);
3233 case R_ARM_THM_CALL:
3234 case R_ARM_THM_JUMP24:
3235 /* This one is a call from thumb code. We look
3236 up the target of the call. If it is not a thumb
3237 target, we insert glue. */
3238 if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC
3239 && !(globals->use_blx && r_type == R_ARM_THM_CALL)
3240 && h->root.type != bfd_link_hash_undefweak)
3241 record_thumb_to_arm_glue (link_info, h);
3249 if (contents != NULL
3250 && elf_section_data (sec)->this_hdr.contents != contents)
3254 if (internal_relocs != NULL
3255 && elf_section_data (sec)->relocs != internal_relocs)
3256 free (internal_relocs);
3257 internal_relocs = NULL;
3263 if (contents != NULL
3264 && elf_section_data (sec)->this_hdr.contents != contents)
3266 if (internal_relocs != NULL
3267 && elf_section_data (sec)->relocs != internal_relocs)
3268 free (internal_relocs);
3275 /* Initialise maps of ARM/Thumb/data for input BFDs. */
3278 bfd_elf32_arm_init_maps (bfd *abfd)
3280 Elf_Internal_Sym *isymbuf;
3281 Elf_Internal_Shdr *hdr;
3282 unsigned int i, localsyms;
3284 if ((abfd->flags & DYNAMIC) != 0)
3287 hdr = & elf_symtab_hdr (abfd);
3288 localsyms = hdr->sh_info;
3290 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
3291 should contain the number of local symbols, which should come before any
3292 global symbols. Mapping symbols are always local. */
3293 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL,
3296 /* No internal symbols read? Skip this BFD. */
3297 if (isymbuf == NULL)
3300 for (i = 0; i < localsyms; i++)
3302 Elf_Internal_Sym *isym = &isymbuf[i];
3303 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
3307 && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
3309 name = bfd_elf_string_from_elf_section (abfd,
3310 hdr->sh_link, isym->st_name);
3312 if (bfd_is_arm_special_symbol_name (name,
3313 BFD_ARM_SPECIAL_SYM_TYPE_MAP))
3314 elf32_arm_section_map_add (sec, name[1], isym->st_value);
3321 bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info)
3323 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
3324 obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd);
3326 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
3327 if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7)
3329 switch (globals->vfp11_fix)
3331 case BFD_ARM_VFP11_FIX_DEFAULT:
3332 case BFD_ARM_VFP11_FIX_NONE:
3333 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
3337 /* Give a warning, but do as the user requests anyway. */
3338 (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum "
3339 "workaround is not necessary for target architecture"), obfd);
3342 else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT)
3343 /* For earlier architectures, we might need the workaround, but do not
3344 enable it by default. If users is running with broken hardware, they
3345 must enable the erratum fix explicitly. */
3346 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
3350 enum bfd_arm_vfp11_pipe {
3357 /* Return a VFP register number. This is encoded as RX:X for single-precision
3358 registers, or X:RX for double-precision registers, where RX is the group of
3359 four bits in the instruction encoding and X is the single extension bit.
3360 RX and X fields are specified using their lowest (starting) bit. The return
3363 0...31: single-precision registers s0...s31
3364 32...63: double-precision registers d0...d31.
3366 Although X should be zero for VFP11 (encoding d0...d15 only), we might
3367 encounter VFP3 instructions, so we allow the full range for DP registers. */
3370 bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx,
3374 return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32;
3376 return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1);
3379 /* Set bits in *WMASK according to a register number REG as encoded by
3380 bfd_arm_vfp11_regno(). Ignore d16-d31. */
3383 bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg)
3388 *wmask |= 3 << ((reg - 32) * 2);
3391 /* Return TRUE if WMASK overwrites anything in REGS. */
3394 bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs)
3398 for (i = 0; i < numregs; i++)
3400 unsigned int reg = regs[i];
3402 if (reg < 32 && (wmask & (1 << reg)) != 0)
3410 if ((wmask & (3 << (reg * 2))) != 0)
3417 /* In this function, we're interested in two things: finding input registers
3418 for VFP data-processing instructions, and finding the set of registers which
3419 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
3420 hold the written set, so FLDM etc. are easy to deal with (we're only
3421 interested in 32 SP registers or 16 dp registers, due to the VFP version
3422 implemented by the chip in question). DP registers are marked by setting
3423 both SP registers in the write mask). */
3425 static enum bfd_arm_vfp11_pipe
3426 bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs,
3429 enum bfd_arm_vfp11_pipe pipe = VFP11_BAD;
3430 bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0;
3432 if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
3435 unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
3436 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
3438 pqrs = ((insn & 0x00800000) >> 20)
3439 | ((insn & 0x00300000) >> 19)
3440 | ((insn & 0x00000040) >> 6);
3444 case 0: /* fmac[sd]. */
3445 case 1: /* fnmac[sd]. */
3446 case 2: /* fmsc[sd]. */
3447 case 3: /* fnmsc[sd]. */
3449 bfd_arm_vfp11_write_mask (destmask, fd);
3451 regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
3456 case 4: /* fmul[sd]. */
3457 case 5: /* fnmul[sd]. */
3458 case 6: /* fadd[sd]. */
3459 case 7: /* fsub[sd]. */
3463 case 8: /* fdiv[sd]. */
3466 bfd_arm_vfp11_write_mask (destmask, fd);
3467 regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
3472 case 15: /* extended opcode. */
3474 unsigned int extn = ((insn >> 15) & 0x1e)
3475 | ((insn >> 7) & 1);
3479 case 0: /* fcpy[sd]. */
3480 case 1: /* fabs[sd]. */
3481 case 2: /* fneg[sd]. */
3482 case 8: /* fcmp[sd]. */
3483 case 9: /* fcmpe[sd]. */
3484 case 10: /* fcmpz[sd]. */
3485 case 11: /* fcmpez[sd]. */
3486 case 16: /* fuito[sd]. */
3487 case 17: /* fsito[sd]. */
3488 case 24: /* ftoui[sd]. */
3489 case 25: /* ftouiz[sd]. */
3490 case 26: /* ftosi[sd]. */
3491 case 27: /* ftosiz[sd]. */
3492 /* These instructions will not bounce due to underflow. */
3497 case 3: /* fsqrt[sd]. */
3498 /* fsqrt cannot underflow, but it can (perhaps) overwrite
3499 registers to cause the erratum in previous instructions. */
3500 bfd_arm_vfp11_write_mask (destmask, fd);
3504 case 15: /* fcvt{ds,sd}. */
3508 bfd_arm_vfp11_write_mask (destmask, fd);
3510 /* Only FCVTSD can underflow. */
3511 if ((insn & 0x100) != 0)
3530 /* Two-register transfer. */
3531 else if ((insn & 0x0fe00ed0) == 0x0c400a10)
3533 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
3535 if ((insn & 0x100000) == 0)
3538 bfd_arm_vfp11_write_mask (destmask, fm);
3541 bfd_arm_vfp11_write_mask (destmask, fm);
3542 bfd_arm_vfp11_write_mask (destmask, fm + 1);
3548 else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */
3550 int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
3551 unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1);
3555 case 0: /* Two-reg transfer. We should catch these above. */
3558 case 2: /* fldm[sdx]. */
3562 unsigned int i, offset = insn & 0xff;
3567 for (i = fd; i < fd + offset; i++)
3568 bfd_arm_vfp11_write_mask (destmask, i);
3572 case 4: /* fld[sd]. */
3574 bfd_arm_vfp11_write_mask (destmask, fd);
3583 /* Single-register transfer. Note L==0. */
3584 else if ((insn & 0x0f100e10) == 0x0e000a10)
3586 unsigned int opcode = (insn >> 21) & 7;
3587 unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7);
3591 case 0: /* fmsr/fmdlr. */
3592 case 1: /* fmdhr. */
3593 /* Mark fmdhr and fmdlr as writing to the whole of the DP
3594 destination register. I don't know if this is exactly right,
3595 but it is the conservative choice. */
3596 bfd_arm_vfp11_write_mask (destmask, fn);
3610 static int elf32_arm_compare_mapping (const void * a, const void * b);
3613 /* Look for potentially-troublesome code sequences which might trigger the
3614 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
3615 (available from ARM) for details of the erratum. A short version is
3616 described in ld.texinfo. */
3619 bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info)
3622 bfd_byte *contents = NULL;
3624 int regs[3], numregs = 0;
3625 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
3626 int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR);
3628 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
3629 The states transition as follows:
3631 0 -> 1 (vector) or 0 -> 2 (scalar)
3632 A VFP FMAC-pipeline instruction has been seen. Fill
3633 regs[0]..regs[numregs-1] with its input operands. Remember this
3634 instruction in 'first_fmac'.
3637 Any instruction, except for a VFP instruction which overwrites
3642 A VFP instruction has been seen which overwrites any of regs[*].
3643 We must make a veneer! Reset state to 0 before examining next
3647 If we fail to match anything in state 2, reset to state 0 and reset
3648 the instruction pointer to the instruction after 'first_fmac'.
3650 If the VFP11 vector mode is in use, there must be at least two unrelated
3651 instructions between anti-dependent VFP11 instructions to properly avoid
3652 triggering the erratum, hence the use of the extra state 1.
3655 /* If we are only performing a partial link do not bother
3656 to construct any glue. */
3657 if (link_info->relocatable)
3660 /* Skip if this bfd does not correspond to an ELF image. */
3661 if (! is_arm_elf (abfd))
3664 /* We should have chosen a fix type by the time we get here. */
3665 BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT);
3667 if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE)
3670 for (sec = abfd->sections; sec != NULL; sec = sec->next)
3672 unsigned int i, span, first_fmac = 0, veneer_of_insn = 0;
3673 struct _arm_elf_section_data *sec_data;
3675 /* If we don't have executable progbits, we're not interested in this
3676 section. Also skip if section is to be excluded. */
3677 if (elf_section_type (sec) != SHT_PROGBITS
3678 || (elf_section_flags (sec) & SHF_EXECINSTR) == 0
3679 || (sec->flags & SEC_EXCLUDE) != 0
3680 || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0)
3683 sec_data = elf32_arm_section_data (sec);
3685 if (sec_data->mapcount == 0)
3688 if (elf_section_data (sec)->this_hdr.contents != NULL)
3689 contents = elf_section_data (sec)->this_hdr.contents;
3690 else if (! bfd_malloc_and_get_section (abfd, sec, &contents))
3693 qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map),
3694 elf32_arm_compare_mapping);
3696 for (span = 0; span < sec_data->mapcount; span++)
3698 unsigned int span_start = sec_data->map[span].vma;
3699 unsigned int span_end = (span == sec_data->mapcount - 1)
3700 ? sec->size : sec_data->map[span + 1].vma;
3701 char span_type = sec_data->map[span].type;
3703 /* FIXME: Only ARM mode is supported at present. We may need to
3704 support Thumb-2 mode also at some point. */
3705 if (span_type != 'a')
3708 for (i = span_start; i < span_end;)
3710 unsigned int next_i = i + 4;
3711 unsigned int insn = bfd_big_endian (abfd)
3712 ? (contents[i] << 24)
3713 | (contents[i + 1] << 16)
3714 | (contents[i + 2] << 8)
3716 : (contents[i + 3] << 24)
3717 | (contents[i + 2] << 16)
3718 | (contents[i + 1] << 8)
3720 unsigned int writemask = 0;
3721 enum bfd_arm_vfp11_pipe pipe;
3726 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs,
3728 /* I'm assuming the VFP11 erratum can trigger with denorm
3729 operands on either the FMAC or the DS pipeline. This might
3730 lead to slightly overenthusiastic veneer insertion. */
3731 if (pipe == VFP11_FMAC || pipe == VFP11_DS)
3733 state = use_vector ? 1 : 2;
3735 veneer_of_insn = insn;
3741 int other_regs[3], other_numregs;
3742 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
3745 if (pipe != VFP11_BAD
3746 && bfd_arm_vfp11_antidependency (writemask, regs,
3756 int other_regs[3], other_numregs;
3757 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
3760 if (pipe != VFP11_BAD
3761 && bfd_arm_vfp11_antidependency (writemask, regs,
3767 next_i = first_fmac + 4;
3773 abort (); /* Should be unreachable. */
3778 elf32_vfp11_erratum_list *newerr
3779 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
3782 errcount = ++(elf32_arm_section_data (sec)->erratumcount);
3784 newerr->u.b.vfp_insn = veneer_of_insn;
3789 newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER;
3796 record_vfp11_erratum_veneer (link_info, newerr, abfd, sec,
3801 newerr->next = sec_data->erratumlist;
3802 sec_data->erratumlist = newerr;
3811 if (contents != NULL
3812 && elf_section_data (sec)->this_hdr.contents != contents)
3820 if (contents != NULL
3821 && elf_section_data (sec)->this_hdr.contents != contents)
3827 /* Find virtual-memory addresses for VFP11 erratum veneers and return locations
3828 after sections have been laid out, using specially-named symbols. */
3831 bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd,
3832 struct bfd_link_info *link_info)
3835 struct elf32_arm_link_hash_table *globals;
3838 if (link_info->relocatable)
3841 /* Skip if this bfd does not correspond to an ELF image. */
3842 if (! is_arm_elf (abfd))
3845 globals = elf32_arm_hash_table (link_info);
3847 tmp_name = bfd_malloc ((bfd_size_type) strlen
3848 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
3850 for (sec = abfd->sections; sec != NULL; sec = sec->next)
3852 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
3853 elf32_vfp11_erratum_list *errnode = sec_data->erratumlist;
3855 for (; errnode != NULL; errnode = errnode->next)
3857 struct elf_link_hash_entry *myh;
3860 switch (errnode->type)
3862 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
3863 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER:
3864 /* Find veneer symbol. */
3865 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
3866 errnode->u.b.veneer->u.v.id);
3868 myh = elf_link_hash_lookup
3869 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
3872 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
3873 "`%s'"), abfd, tmp_name);
3875 vma = myh->root.u.def.section->output_section->vma
3876 + myh->root.u.def.section->output_offset
3877 + myh->root.u.def.value;
3879 errnode->u.b.veneer->vma = vma;
3882 case VFP11_ERRATUM_ARM_VENEER:
3883 case VFP11_ERRATUM_THUMB_VENEER:
3884 /* Find return location. */
3885 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
3888 myh = elf_link_hash_lookup
3889 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
3892 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
3893 "`%s'"), abfd, tmp_name);
3895 vma = myh->root.u.def.section->output_section->vma
3896 + myh->root.u.def.section->output_offset
3897 + myh->root.u.def.value;
3899 errnode->u.v.branch->vma = vma;
3912 /* Set target relocation values needed during linking. */
3915 bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd,
3916 struct bfd_link_info *link_info,
3918 char * target2_type,
3921 bfd_arm_vfp11_fix vfp11_fix,
3922 int no_enum_warn, int pic_veneer)
3924 struct elf32_arm_link_hash_table *globals;
3926 globals = elf32_arm_hash_table (link_info);
3928 globals->target1_is_rel = target1_is_rel;
3929 if (strcmp (target2_type, "rel") == 0)
3930 globals->target2_reloc = R_ARM_REL32;
3931 else if (strcmp (target2_type, "abs") == 0)
3932 globals->target2_reloc = R_ARM_ABS32;
3933 else if (strcmp (target2_type, "got-rel") == 0)
3934 globals->target2_reloc = R_ARM_GOT_PREL;
3937 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
3940 globals->fix_v4bx = fix_v4bx;
3941 globals->use_blx |= use_blx;
3942 globals->vfp11_fix = vfp11_fix;
3943 globals->pic_veneer = pic_veneer;
3945 BFD_ASSERT (is_arm_elf (output_bfd));
3946 elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
3949 /* The thumb form of a long branch is a bit finicky, because the offset
3950 encoding is split over two fields, each in it's own instruction. They
3951 can occur in any order. So given a thumb form of long branch, and an
3952 offset, insert the offset into the thumb branch and return finished
3955 It takes two thumb instructions to encode the target address. Each has
3956 11 bits to invest. The upper 11 bits are stored in one (identified by
3957 H-0.. see below), the lower 11 bits are stored in the other (identified
3960 Combine together and shifted left by 1 (it's a half word address) and
3964 H-0, upper address-0 = 000
3966 H-1, lower address-0 = 800
3968 They can be ordered either way, but the arm tools I've seen always put
3969 the lower one first. It probably doesn't matter. krk@cygnus.com
3971 XXX: Actually the order does matter. The second instruction (H-1)
3972 moves the computed address into the PC, so it must be the second one
3973 in the sequence. The problem, however is that whilst little endian code
3974 stores the instructions in HI then LOW order, big endian code does the
3975 reverse. nickc@cygnus.com. */
3977 #define LOW_HI_ORDER 0xF800F000
3978 #define HI_LOW_ORDER 0xF000F800
3981 insert_thumb_branch (insn32 br_insn, int rel_off)
3983 unsigned int low_bits;
3984 unsigned int high_bits;
3986 BFD_ASSERT ((rel_off & 1) != 1);
3988 rel_off >>= 1; /* Half word aligned address. */
3989 low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */
3990 high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */
3992 if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER)
3993 br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits;
3994 else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER)
3995 br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits;
3997 /* FIXME: abort is probably not the right call. krk@cygnus.com */
3998 abort (); /* Error - not a valid branch instruction form. */
4004 /* Store an Arm insn into an output section not processed by
4005 elf32_arm_write_section. */
4008 put_arm_insn (struct elf32_arm_link_hash_table *htab,
4009 bfd * output_bfd, bfd_vma val, void * ptr)
4011 if (htab->byteswap_code != bfd_little_endian (output_bfd))
4012 bfd_putl32 (val, ptr);
4014 bfd_putb32 (val, ptr);
4018 /* Store a 16-bit Thumb insn into an output section not processed by
4019 elf32_arm_write_section. */
4022 put_thumb_insn (struct elf32_arm_link_hash_table *htab,
4023 bfd * output_bfd, bfd_vma val, void * ptr)
4025 if (htab->byteswap_code != bfd_little_endian (output_bfd))
4026 bfd_putl16 (val, ptr);
4028 bfd_putb16 (val, ptr);
4032 /* Thumb code calling an ARM function. */
4035 elf32_thumb_to_arm_stub (struct bfd_link_info * info,
4039 asection * input_section,
4040 bfd_byte * hit_data,
4043 bfd_signed_vma addend,
4045 char **error_message)
4049 unsigned long int tmp;
4050 long int ret_offset;
4051 struct elf_link_hash_entry * myh;
4052 struct elf32_arm_link_hash_table * globals;
4054 myh = find_thumb_glue (info, name, error_message);
4058 globals = elf32_arm_hash_table (info);
4060 BFD_ASSERT (globals != NULL);
4061 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4063 my_offset = myh->root.u.def.value;
4065 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4066 THUMB2ARM_GLUE_SECTION_NAME);
4068 BFD_ASSERT (s != NULL);
4069 BFD_ASSERT (s->contents != NULL);
4070 BFD_ASSERT (s->output_section != NULL);
4072 if ((my_offset & 0x01) == 0x01)
4075 && sym_sec->owner != NULL
4076 && !INTERWORK_FLAG (sym_sec->owner))
4078 (*_bfd_error_handler)
4079 (_("%B(%s): warning: interworking not enabled.\n"
4080 " first occurrence: %B: thumb call to arm"),
4081 sym_sec->owner, input_bfd, name);
4087 myh->root.u.def.value = my_offset;
4089 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn,
4090 s->contents + my_offset);
4092 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn,
4093 s->contents + my_offset + 2);
4096 /* Address of destination of the stub. */
4097 ((bfd_signed_vma) val)
4099 /* Offset from the start of the current section
4100 to the start of the stubs. */
4102 /* Offset of the start of this stub from the start of the stubs. */
4104 /* Address of the start of the current section. */
4105 + s->output_section->vma)
4106 /* The branch instruction is 4 bytes into the stub. */
4108 /* ARM branches work from the pc of the instruction + 8. */
4111 put_arm_insn (globals, output_bfd,
4112 (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
4113 s->contents + my_offset + 4);
4116 BFD_ASSERT (my_offset <= globals->thumb_glue_size);
4118 /* Now go back and fix up the original BL insn to point to here. */
4120 /* Address of where the stub is located. */
4121 (s->output_section->vma + s->output_offset + my_offset)
4122 /* Address of where the BL is located. */
4123 - (input_section->output_section->vma + input_section->output_offset
4125 /* Addend in the relocation. */
4127 /* Biassing for PC-relative addressing. */
4130 tmp = bfd_get_32 (input_bfd, hit_data
4131 - input_section->vma);
4133 bfd_put_32 (output_bfd,
4134 (bfd_vma) insert_thumb_branch (tmp, ret_offset),
4135 hit_data - input_section->vma);
4140 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
4142 static struct elf_link_hash_entry *
4143 elf32_arm_create_thumb_stub (struct bfd_link_info * info,
4150 char **error_message)
4153 long int ret_offset;
4154 struct elf_link_hash_entry * myh;
4155 struct elf32_arm_link_hash_table * globals;
4157 myh = find_arm_glue (info, name, error_message);
4161 globals = elf32_arm_hash_table (info);
4163 BFD_ASSERT (globals != NULL);
4164 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4166 my_offset = myh->root.u.def.value;
4168 if ((my_offset & 0x01) == 0x01)
4171 && sym_sec->owner != NULL
4172 && !INTERWORK_FLAG (sym_sec->owner))
4174 (*_bfd_error_handler)
4175 (_("%B(%s): warning: interworking not enabled.\n"
4176 " first occurrence: %B: arm call to thumb"),
4177 sym_sec->owner, input_bfd, name);
4181 myh->root.u.def.value = my_offset;
4183 if (info->shared || globals->root.is_relocatable_executable
4184 || globals->pic_veneer)
4186 /* For relocatable objects we can't use absolute addresses,
4187 so construct the address from a relative offset. */
4188 /* TODO: If the offset is small it's probably worth
4189 constructing the address with adds. */
4190 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn,
4191 s->contents + my_offset);
4192 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn,
4193 s->contents + my_offset + 4);
4194 put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
4195 s->contents + my_offset + 8);
4196 /* Adjust the offset by 4 for the position of the add,
4197 and 8 for the pipeline offset. */
4198 ret_offset = (val - (s->output_offset
4199 + s->output_section->vma
4202 bfd_put_32 (output_bfd, ret_offset,
4203 s->contents + my_offset + 12);
4205 else if (globals->use_blx)
4207 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn,
4208 s->contents + my_offset);
4210 /* It's a thumb address. Add the low order bit. */
4211 bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn,
4212 s->contents + my_offset + 4);
4216 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn,
4217 s->contents + my_offset);
4219 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn,
4220 s->contents + my_offset + 4);
4222 /* It's a thumb address. Add the low order bit. */
4223 bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
4224 s->contents + my_offset + 8);
4228 BFD_ASSERT (my_offset <= globals->arm_glue_size);
4233 /* Arm code calling a Thumb function. */
4236 elf32_arm_to_thumb_stub (struct bfd_link_info * info,
4240 asection * input_section,
4241 bfd_byte * hit_data,
4244 bfd_signed_vma addend,
4246 char **error_message)
4248 unsigned long int tmp;
4251 long int ret_offset;
4252 struct elf_link_hash_entry * myh;
4253 struct elf32_arm_link_hash_table * globals;
4255 globals = elf32_arm_hash_table (info);
4257 BFD_ASSERT (globals != NULL);
4258 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4260 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4261 ARM2THUMB_GLUE_SECTION_NAME);
4262 BFD_ASSERT (s != NULL);
4263 BFD_ASSERT (s->contents != NULL);
4264 BFD_ASSERT (s->output_section != NULL);
4266 myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd,
4267 sym_sec, val, s, error_message);
4271 my_offset = myh->root.u.def.value;
4272 tmp = bfd_get_32 (input_bfd, hit_data);
4273 tmp = tmp & 0xFF000000;
4275 /* Somehow these are both 4 too far, so subtract 8. */
4276 ret_offset = (s->output_offset
4278 + s->output_section->vma
4279 - (input_section->output_offset
4280 + input_section->output_section->vma
4284 tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
4286 bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
4291 /* Populate Arm stub for an exported Thumb function. */
4294 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf)
4296 struct bfd_link_info * info = (struct bfd_link_info *) inf;
4298 struct elf_link_hash_entry * myh;
4299 struct elf32_arm_link_hash_entry *eh;
4300 struct elf32_arm_link_hash_table * globals;
4303 char *error_message;
4305 eh = elf32_arm_hash_entry(h);
4306 /* Allocate stubs for exported Thumb functions on v4t. */
4307 if (eh->export_glue == NULL)
4310 globals = elf32_arm_hash_table (info);
4312 BFD_ASSERT (globals != NULL);
4313 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4315 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4316 ARM2THUMB_GLUE_SECTION_NAME);
4317 BFD_ASSERT (s != NULL);
4318 BFD_ASSERT (s->contents != NULL);
4319 BFD_ASSERT (s->output_section != NULL);
4321 sec = eh->export_glue->root.u.def.section;
4323 BFD_ASSERT (sec->output_section != NULL);
4325 val = eh->export_glue->root.u.def.value + sec->output_offset
4326 + sec->output_section->vma;
4327 myh = elf32_arm_create_thumb_stub (info, h->root.root.string,
4328 h->root.u.def.section->owner,
4329 globals->obfd, sec, val, s,
4335 /* Generate Arm stubs for exported Thumb symbols. */
4337 elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED,
4338 struct bfd_link_info *link_info)
4340 struct elf32_arm_link_hash_table * globals;
4345 globals = elf32_arm_hash_table (link_info);
4346 /* If blx is available then exported Thumb symbols are OK and there is
4348 if (globals->use_blx)
4351 elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub,
4355 /* Some relocations map to different relocations depending on the
4356 target. Return the real relocation. */
4358 arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
4364 if (globals->target1_is_rel)
4370 return globals->target2_reloc;
4377 /* Return the base VMA address which should be subtracted from real addresses
4378 when resolving @dtpoff relocation.
4379 This is PT_TLS segment p_vaddr. */
4382 dtpoff_base (struct bfd_link_info *info)
4384 /* If tls_sec is NULL, we should have signalled an error already. */
4385 if (elf_hash_table (info)->tls_sec == NULL)
4387 return elf_hash_table (info)->tls_sec->vma;
4390 /* Return the relocation value for @tpoff relocation
4391 if STT_TLS virtual address is ADDRESS. */
4394 tpoff (struct bfd_link_info *info, bfd_vma address)
4396 struct elf_link_hash_table *htab = elf_hash_table (info);
4399 /* If tls_sec is NULL, we should have signalled an error already. */
4400 if (htab->tls_sec == NULL)
4402 base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
4403 return address - htab->tls_sec->vma + base;
4406 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
4407 VALUE is the relocation value. */
4409 static bfd_reloc_status_type
4410 elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value)
4413 return bfd_reloc_overflow;
4415 value |= bfd_get_32 (abfd, data) & 0xfffff000;
4416 bfd_put_32 (abfd, value, data);
4417 return bfd_reloc_ok;
4420 /* For a given value of n, calculate the value of G_n as required to
4421 deal with group relocations. We return it in the form of an
4422 encoded constant-and-rotation, together with the final residual. If n is
4423 specified as less than zero, then final_residual is filled with the
4424 input value and no further action is performed. */
4427 calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual)
4431 bfd_vma encoded_g_n = 0;
4432 bfd_vma residual = value; /* Also known as Y_n. */
4434 for (current_n = 0; current_n <= n; current_n++)
4438 /* Calculate which part of the value to mask. */
4445 /* Determine the most significant bit in the residual and
4446 align the resulting value to a 2-bit boundary. */
4447 for (msb = 30; msb >= 0; msb -= 2)
4448 if (residual & (3 << msb))
4451 /* The desired shift is now (msb - 6), or zero, whichever
4458 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
4459 g_n = residual & (0xff << shift);
4460 encoded_g_n = (g_n >> shift)
4461 | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8);
4463 /* Calculate the residual for the next time around. */
4467 *final_residual = residual;
4472 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
4473 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
4475 identify_add_or_sub(bfd_vma insn)
4477 int opcode = insn & 0x1e00000;
4479 if (opcode == 1 << 23) /* ADD */
4482 if (opcode == 1 << 22) /* SUB */
4488 /* Determine if we're dealing with a Thumb-2 object. */
4490 static int using_thumb2 (struct elf32_arm_link_hash_table *globals)
4492 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
4494 return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7;
4497 /* Perform a relocation as part of a final link. */
4499 static bfd_reloc_status_type
4500 elf32_arm_final_link_relocate (reloc_howto_type * howto,
4503 asection * input_section,
4504 bfd_byte * contents,
4505 Elf_Internal_Rela * rel,
4507 struct bfd_link_info * info,
4509 const char * sym_name,
4511 struct elf_link_hash_entry * h,
4512 bfd_boolean * unresolved_reloc_p,
4513 char **error_message)
4515 unsigned long r_type = howto->type;
4516 unsigned long r_symndx;
4517 bfd_byte * hit_data = contents + rel->r_offset;
4518 bfd * dynobj = NULL;
4519 Elf_Internal_Shdr * symtab_hdr;
4520 struct elf_link_hash_entry ** sym_hashes;
4521 bfd_vma * local_got_offsets;
4522 asection * sgot = NULL;
4523 asection * splt = NULL;
4524 asection * sreloc = NULL;
4526 bfd_signed_vma signed_addend;
4527 struct elf32_arm_link_hash_table * globals;
4529 globals = elf32_arm_hash_table (info);
4531 BFD_ASSERT (is_arm_elf (input_bfd));
4533 /* Some relocation types map to different relocations depending on the
4534 target. We pick the right one here. */
4535 r_type = arm_real_reloc_type (globals, r_type);
4536 if (r_type != howto->type)
4537 howto = elf32_arm_howto_from_type (r_type);
4539 /* If the start address has been set, then set the EF_ARM_HASENTRY
4540 flag. Setting this more than once is redundant, but the cost is
4541 not too high, and it keeps the code simple.
4543 The test is done here, rather than somewhere else, because the
4544 start address is only set just before the final link commences.
4546 Note - if the user deliberately sets a start address of 0, the
4547 flag will not be set. */
4548 if (bfd_get_start_address (output_bfd) != 0)
4549 elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
4551 dynobj = elf_hash_table (info)->dynobj;
4554 sgot = bfd_get_section_by_name (dynobj, ".got");
4555 splt = bfd_get_section_by_name (dynobj, ".plt");
4557 symtab_hdr = & elf_symtab_hdr (input_bfd);
4558 sym_hashes = elf_sym_hashes (input_bfd);
4559 local_got_offsets = elf_local_got_offsets (input_bfd);
4560 r_symndx = ELF32_R_SYM (rel->r_info);
4562 if (globals->use_rel)
4564 addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
4566 if (addend & ((howto->src_mask + 1) >> 1))
4569 signed_addend &= ~ howto->src_mask;
4570 signed_addend |= addend;
4573 signed_addend = addend;
4576 addend = signed_addend = rel->r_addend;
4581 /* We don't need to find a value for this symbol. It's just a
4583 *unresolved_reloc_p = FALSE;
4584 return bfd_reloc_ok;
4587 if (!globals->vxworks_p)
4588 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
4592 case R_ARM_ABS32_NOI:
4594 case R_ARM_REL32_NOI:
4600 /* Handle relocations which should use the PLT entry. ABS32/REL32
4601 will use the symbol's value, which may point to a PLT entry, but we
4602 don't need to handle that here. If we created a PLT entry, all
4603 branches in this object should go to it. */
4604 if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32
4605 && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI)
4608 && h->plt.offset != (bfd_vma) -1)
4610 /* If we've created a .plt section, and assigned a PLT entry to
4611 this function, it should not be known to bind locally. If
4612 it were, we would have cleared the PLT entry. */
4613 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
4615 value = (splt->output_section->vma
4616 + splt->output_offset
4618 *unresolved_reloc_p = FALSE;
4619 return _bfd_final_link_relocate (howto, input_bfd, input_section,
4620 contents, rel->r_offset, value,
4624 /* When generating a shared object or relocatable executable, these
4625 relocations are copied into the output file to be resolved at
4627 if ((info->shared || globals->root.is_relocatable_executable)
4628 && (input_section->flags & SEC_ALLOC)
4629 && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI)
4630 || !SYMBOL_CALLS_LOCAL (info, h))
4632 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4633 || h->root.type != bfd_link_hash_undefweak)
4634 && r_type != R_ARM_PC24
4635 && r_type != R_ARM_CALL
4636 && r_type != R_ARM_JUMP24
4637 && r_type != R_ARM_PREL31
4638 && r_type != R_ARM_PLT32)
4640 Elf_Internal_Rela outrel;
4642 bfd_boolean skip, relocate;
4644 *unresolved_reloc_p = FALSE;
4650 name = (bfd_elf_string_from_elf_section
4652 elf_elfheader (input_bfd)->e_shstrndx,
4653 elf_section_data (input_section)->rel_hdr.sh_name));
4655 return bfd_reloc_notsupported;
4657 BFD_ASSERT (reloc_section_p (globals, name, input_section));
4659 sreloc = bfd_get_section_by_name (dynobj, name);
4660 BFD_ASSERT (sreloc != NULL);
4666 outrel.r_addend = addend;
4668 _bfd_elf_section_offset (output_bfd, info, input_section,
4670 if (outrel.r_offset == (bfd_vma) -1)
4672 else if (outrel.r_offset == (bfd_vma) -2)
4673 skip = TRUE, relocate = TRUE;
4674 outrel.r_offset += (input_section->output_section->vma
4675 + input_section->output_offset);
4678 memset (&outrel, 0, sizeof outrel);
4683 || !h->def_regular))
4684 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
4689 /* This symbol is local, or marked to become local. */
4690 if (sym_flags == STT_ARM_TFUNC)
4692 if (globals->symbian_p)
4696 /* On Symbian OS, the data segment and text segement
4697 can be relocated independently. Therefore, we
4698 must indicate the segment to which this
4699 relocation is relative. The BPABI allows us to
4700 use any symbol in the right segment; we just use
4701 the section symbol as it is convenient. (We
4702 cannot use the symbol given by "h" directly as it
4703 will not appear in the dynamic symbol table.)
4705 Note that the dynamic linker ignores the section
4706 symbol value, so we don't subtract osec->vma
4707 from the emitted reloc addend. */
4709 osec = sym_sec->output_section;
4711 osec = input_section->output_section;
4712 symbol = elf_section_data (osec)->dynindx;
4715 struct elf_link_hash_table *htab = elf_hash_table (info);
4717 if ((osec->flags & SEC_READONLY) == 0
4718 && htab->data_index_section != NULL)
4719 osec = htab->data_index_section;
4721 osec = htab->text_index_section;
4722 symbol = elf_section_data (osec)->dynindx;
4724 BFD_ASSERT (symbol != 0);
4727 /* On SVR4-ish systems, the dynamic loader cannot
4728 relocate the text and data segments independently,
4729 so the symbol does not matter. */
4731 outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
4732 if (globals->use_rel)
4735 outrel.r_addend += value;
4738 loc = sreloc->contents;
4739 loc += sreloc->reloc_count++ * RELOC_SIZE (globals);
4740 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
4742 /* If this reloc is against an external symbol, we do not want to
4743 fiddle with the addend. Otherwise, we need to include the symbol
4744 value so that it becomes an addend for the dynamic reloc. */
4746 return bfd_reloc_ok;
4748 return _bfd_final_link_relocate (howto, input_bfd, input_section,
4749 contents, rel->r_offset, value,
4752 else switch (r_type)
4755 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
4757 case R_ARM_XPC25: /* Arm BLX instruction. */
4760 case R_ARM_PC24: /* Arm B/BL instruction */
4762 if (r_type == R_ARM_XPC25)
4764 /* Check for Arm calling Arm function. */
4765 /* FIXME: Should we translate the instruction into a BL
4766 instruction instead ? */
4767 if (sym_flags != STT_ARM_TFUNC)
4768 (*_bfd_error_handler)
4769 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
4771 h ? h->root.root.string : "(local)");
4773 else if (r_type != R_ARM_CALL || !globals->use_blx)
4775 /* Check for Arm calling Thumb function. */
4776 if (sym_flags == STT_ARM_TFUNC)
4778 if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
4779 output_bfd, input_section,
4780 hit_data, sym_sec, rel->r_offset,
4781 signed_addend, value,
4783 return bfd_reloc_ok;
4785 return bfd_reloc_dangerous;
4789 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
4791 S is the address of the symbol in the relocation.
4792 P is address of the instruction being relocated.
4793 A is the addend (extracted from the instruction) in bytes.
4795 S is held in 'value'.
4796 P is the base address of the section containing the
4797 instruction plus the offset of the reloc into that
4799 (input_section->output_section->vma +
4800 input_section->output_offset +
4802 A is the addend, converted into bytes, ie:
4805 Note: None of these operations have knowledge of the pipeline
4806 size of the processor, thus it is up to the assembler to
4807 encode this information into the addend. */
4808 value -= (input_section->output_section->vma
4809 + input_section->output_offset);
4810 value -= rel->r_offset;
4811 if (globals->use_rel)
4812 value += (signed_addend << howto->size);
4814 /* RELA addends do not have to be adjusted by howto->size. */
4815 value += signed_addend;
4817 signed_addend = value;
4818 signed_addend >>= howto->rightshift;
4820 /* A branch to an undefined weak symbol is turned into a jump to
4821 the next instruction. */
4822 if (h && h->root.type == bfd_link_hash_undefweak)
4824 value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000)
4829 /* Perform a signed range check. */
4830 if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
4831 || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
4832 return bfd_reloc_overflow;
4834 addend = (value & 2);
4836 value = (signed_addend & howto->dst_mask)
4837 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
4839 /* Set the H bit in the BLX instruction. */
4840 if (sym_flags == STT_ARM_TFUNC)
4845 value &= ~(bfd_vma)(1 << 24);
4847 if (r_type == R_ARM_CALL)
4849 /* Select the correct instruction (BL or BLX). */
4850 if (sym_flags == STT_ARM_TFUNC)
4854 value &= ~(bfd_vma)(1 << 28);
4863 if (sym_flags == STT_ARM_TFUNC)
4867 case R_ARM_ABS32_NOI:
4873 if (sym_flags == STT_ARM_TFUNC)
4875 value -= (input_section->output_section->vma
4876 + input_section->output_offset + rel->r_offset);
4879 case R_ARM_REL32_NOI:
4881 value -= (input_section->output_section->vma
4882 + input_section->output_offset + rel->r_offset);
4886 value -= (input_section->output_section->vma
4887 + input_section->output_offset + rel->r_offset);
4888 value += signed_addend;
4889 if (! h || h->root.type != bfd_link_hash_undefweak)
4891 /* Check for overflow */
4892 if ((value ^ (value >> 1)) & (1 << 30))
4893 return bfd_reloc_overflow;
4895 value &= 0x7fffffff;
4896 value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
4897 if (sym_flags == STT_ARM_TFUNC)
4902 bfd_put_32 (input_bfd, value, hit_data);
4903 return bfd_reloc_ok;
4907 if ((long) value > 0x7f || (long) value < -0x80)
4908 return bfd_reloc_overflow;
4910 bfd_put_8 (input_bfd, value, hit_data);
4911 return bfd_reloc_ok;
4916 if ((long) value > 0x7fff || (long) value < -0x8000)
4917 return bfd_reloc_overflow;
4919 bfd_put_16 (input_bfd, value, hit_data);
4920 return bfd_reloc_ok;
4922 case R_ARM_THM_ABS5:
4923 /* Support ldr and str instructions for the thumb. */
4924 if (globals->use_rel)
4926 /* Need to refetch addend. */
4927 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
4928 /* ??? Need to determine shift amount from operand size. */
4929 addend >>= howto->rightshift;
4933 /* ??? Isn't value unsigned? */
4934 if ((long) value > 0x1f || (long) value < -0x10)
4935 return bfd_reloc_overflow;
4937 /* ??? Value needs to be properly shifted into place first. */
4938 value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
4939 bfd_put_16 (input_bfd, value, hit_data);
4940 return bfd_reloc_ok;
4942 case R_ARM_THM_ALU_PREL_11_0:
4943 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
4946 bfd_signed_vma relocation;
4948 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
4949 | bfd_get_16 (input_bfd, hit_data + 2);
4951 if (globals->use_rel)
4953 signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4)
4954 | ((insn & (1 << 26)) >> 15);
4955 if (insn & 0xf00000)
4956 signed_addend = -signed_addend;
4959 relocation = value + signed_addend;
4960 relocation -= (input_section->output_section->vma
4961 + input_section->output_offset
4964 value = abs (relocation);
4966 if (value >= 0x1000)
4967 return bfd_reloc_overflow;
4969 insn = (insn & 0xfb0f8f00) | (value & 0xff)
4970 | ((value & 0x700) << 4)
4971 | ((value & 0x800) << 15);
4975 bfd_put_16 (input_bfd, insn >> 16, hit_data);
4976 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
4978 return bfd_reloc_ok;
4981 case R_ARM_THM_PC12:
4982 /* Corresponds to: ldr.w reg, [pc, #offset]. */
4985 bfd_signed_vma relocation;
4987 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
4988 | bfd_get_16 (input_bfd, hit_data + 2);
4990 if (globals->use_rel)
4992 signed_addend = insn & 0xfff;
4993 if (!(insn & (1 << 23)))
4994 signed_addend = -signed_addend;
4997 relocation = value + signed_addend;
4998 relocation -= (input_section->output_section->vma
4999 + input_section->output_offset
5002 value = abs (relocation);
5004 if (value >= 0x1000)
5005 return bfd_reloc_overflow;
5007 insn = (insn & 0xff7ff000) | value;
5008 if (relocation >= 0)
5011 bfd_put_16 (input_bfd, insn >> 16, hit_data);
5012 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
5014 return bfd_reloc_ok;
5017 case R_ARM_THM_XPC22:
5018 case R_ARM_THM_CALL:
5019 case R_ARM_THM_JUMP24:
5020 /* Thumb BL (branch long instruction). */
5024 bfd_boolean overflow = FALSE;
5025 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
5026 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
5027 bfd_signed_vma reloc_signed_max;
5028 bfd_signed_vma reloc_signed_min;
5030 bfd_signed_vma signed_check;
5032 int thumb2 = using_thumb2 (globals);
5034 /* A branch to an undefined weak symbol is turned into a jump to
5035 the next instruction. */
5036 if (h && h->root.type == bfd_link_hash_undefweak)
5038 bfd_put_16 (input_bfd, 0xe000, hit_data);
5039 bfd_put_16 (input_bfd, 0xbf00, hit_data + 2);
5040 return bfd_reloc_ok;
5043 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
5044 with Thumb-1) involving the J1 and J2 bits. */
5045 if (globals->use_rel)
5047 bfd_vma s = (upper_insn & (1 << 10)) >> 10;
5048 bfd_vma upper = upper_insn & 0x3ff;
5049 bfd_vma lower = lower_insn & 0x7ff;
5050 bfd_vma j1 = (lower_insn & (1 << 13)) >> 13;
5051 bfd_vma j2 = (lower_insn & (1 << 11)) >> 11;
5052 bfd_vma i1 = j1 ^ s ? 0 : 1;
5053 bfd_vma i2 = j2 ^ s ? 0 : 1;
5055 addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1);
5057 addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24);
5059 signed_addend = addend;
5062 if (r_type == R_ARM_THM_XPC22)
5064 /* Check for Thumb to Thumb call. */
5065 /* FIXME: Should we translate the instruction into a BL
5066 instruction instead ? */
5067 if (sym_flags == STT_ARM_TFUNC)
5068 (*_bfd_error_handler)
5069 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
5071 h ? h->root.root.string : "(local)");
5075 /* If it is not a call to Thumb, assume call to Arm.
5076 If it is a call relative to a section name, then it is not a
5077 function call at all, but rather a long jump. Calls through
5078 the PLT do not require stubs. */
5079 if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION
5080 && (h == NULL || splt == NULL
5081 || h->plt.offset == (bfd_vma) -1))
5083 if (globals->use_blx && r_type == R_ARM_THM_CALL)
5085 /* Convert BL to BLX. */
5086 lower_insn = (lower_insn & ~0x1000) | 0x0800;
5088 else if (elf32_thumb_to_arm_stub
5089 (info, sym_name, input_bfd, output_bfd, input_section,
5090 hit_data, sym_sec, rel->r_offset, signed_addend, value,
5092 return bfd_reloc_ok;
5094 return bfd_reloc_dangerous;
5096 else if (sym_flags == STT_ARM_TFUNC && globals->use_blx
5097 && r_type == R_ARM_THM_CALL)
5099 /* Make sure this is a BL. */
5100 lower_insn |= 0x1800;
5104 /* Handle calls via the PLT. */
5105 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
5107 value = (splt->output_section->vma
5108 + splt->output_offset
5110 if (globals->use_blx && r_type == R_ARM_THM_CALL)
5112 /* If the Thumb BLX instruction is available, convert the
5113 BL to a BLX instruction to call the ARM-mode PLT entry. */
5114 lower_insn = (lower_insn & ~0x1000) | 0x0800;
5117 /* Target the Thumb stub before the ARM PLT entry. */
5118 value -= PLT_THUMB_STUB_SIZE;
5119 *unresolved_reloc_p = FALSE;
5122 relocation = value + signed_addend;
5124 relocation -= (input_section->output_section->vma
5125 + input_section->output_offset
5128 check = relocation >> howto->rightshift;
5130 /* If this is a signed value, the rightshift just dropped
5131 leading 1 bits (assuming twos complement). */
5132 if ((bfd_signed_vma) relocation >= 0)
5133 signed_check = check;
5135 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
5137 /* Calculate the permissable maximum and minimum values for
5138 this relocation according to whether we're relocating for
5140 bitsize = howto->bitsize;
5143 reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift;
5144 reloc_signed_min = ~reloc_signed_max;
5146 /* Assumes two's complement. */
5147 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
5150 if ((lower_insn & 0x5000) == 0x4000)
5151 /* For a BLX instruction, make sure that the relocation is rounded up
5152 to a word boundary. This follows the semantics of the instruction
5153 which specifies that bit 1 of the target address will come from bit
5154 1 of the base address. */
5155 relocation = (relocation + 2) & ~ 3;
5157 /* Put RELOCATION back into the insn. Assumes two's complement.
5158 We use the Thumb-2 encoding, which is safe even if dealing with
5159 a Thumb-1 instruction by virtue of our overflow check above. */
5160 reloc_sign = (signed_check < 0) ? 1 : 0;
5161 upper_insn = (upper_insn & ~(bfd_vma) 0x7ff)
5162 | ((relocation >> 12) & 0x3ff)
5163 | (reloc_sign << 10);
5164 lower_insn = (lower_insn & ~(bfd_vma) 0x2fff)
5165 | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13)
5166 | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11)
5167 | ((relocation >> 1) & 0x7ff);
5169 /* Put the relocated value back in the object file: */
5170 bfd_put_16 (input_bfd, upper_insn, hit_data);
5171 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
5173 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
5177 case R_ARM_THM_JUMP19:
5178 /* Thumb32 conditional branch instruction. */
5181 bfd_boolean overflow = FALSE;
5182 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
5183 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
5184 bfd_signed_vma reloc_signed_max = 0xffffe;
5185 bfd_signed_vma reloc_signed_min = -0x100000;
5186 bfd_signed_vma signed_check;
5188 /* Need to refetch the addend, reconstruct the top three bits,
5189 and squish the two 11 bit pieces together. */
5190 if (globals->use_rel)
5192 bfd_vma S = (upper_insn & 0x0400) >> 10;
5193 bfd_vma upper = (upper_insn & 0x003f);
5194 bfd_vma J1 = (lower_insn & 0x2000) >> 13;
5195 bfd_vma J2 = (lower_insn & 0x0800) >> 11;
5196 bfd_vma lower = (lower_insn & 0x07ff);
5201 upper -= 0x0100; /* Sign extend. */
5203 addend = (upper << 12) | (lower << 1);
5204 signed_addend = addend;
5207 /* Handle calls via the PLT. */
5208 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
5210 value = (splt->output_section->vma
5211 + splt->output_offset
5213 /* Target the Thumb stub before the ARM PLT entry. */
5214 value -= PLT_THUMB_STUB_SIZE;
5215 *unresolved_reloc_p = FALSE;
5218 /* ??? Should handle interworking? GCC might someday try to
5219 use this for tail calls. */
5221 relocation = value + signed_addend;
5222 relocation -= (input_section->output_section->vma
5223 + input_section->output_offset
5225 signed_check = (bfd_signed_vma) relocation;
5227 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
5230 /* Put RELOCATION back into the insn. */
5232 bfd_vma S = (relocation & 0x00100000) >> 20;
5233 bfd_vma J2 = (relocation & 0x00080000) >> 19;
5234 bfd_vma J1 = (relocation & 0x00040000) >> 18;
5235 bfd_vma hi = (relocation & 0x0003f000) >> 12;
5236 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
5238 upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi;
5239 lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
5242 /* Put the relocated value back in the object file: */
5243 bfd_put_16 (input_bfd, upper_insn, hit_data);
5244 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
5246 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
5249 case R_ARM_THM_JUMP11:
5250 case R_ARM_THM_JUMP8:
5251 case R_ARM_THM_JUMP6:
5252 /* Thumb B (branch) instruction). */
5254 bfd_signed_vma relocation;
5255 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
5256 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
5257 bfd_signed_vma signed_check;
5259 /* CZB cannot jump backward. */
5260 if (r_type == R_ARM_THM_JUMP6)
5261 reloc_signed_min = 0;
5263 if (globals->use_rel)
5265 /* Need to refetch addend. */
5266 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
5267 if (addend & ((howto->src_mask + 1) >> 1))
5270 signed_addend &= ~ howto->src_mask;
5271 signed_addend |= addend;
5274 signed_addend = addend;
5275 /* The value in the insn has been right shifted. We need to
5276 undo this, so that we can perform the address calculation
5277 in terms of bytes. */
5278 signed_addend <<= howto->rightshift;
5280 relocation = value + signed_addend;
5282 relocation -= (input_section->output_section->vma
5283 + input_section->output_offset
5286 relocation >>= howto->rightshift;
5287 signed_check = relocation;
5289 if (r_type == R_ARM_THM_JUMP6)
5290 relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
5292 relocation &= howto->dst_mask;
5293 relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
5295 bfd_put_16 (input_bfd, relocation, hit_data);
5297 /* Assumes two's complement. */
5298 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
5299 return bfd_reloc_overflow;
5301 return bfd_reloc_ok;
5304 case R_ARM_ALU_PCREL7_0:
5305 case R_ARM_ALU_PCREL15_8:
5306 case R_ARM_ALU_PCREL23_15:
5311 insn = bfd_get_32 (input_bfd, hit_data);
5312 if (globals->use_rel)
5314 /* Extract the addend. */
5315 addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
5316 signed_addend = addend;
5318 relocation = value + signed_addend;
5320 relocation -= (input_section->output_section->vma
5321 + input_section->output_offset
5323 insn = (insn & ~0xfff)
5324 | ((howto->bitpos << 7) & 0xf00)
5325 | ((relocation >> howto->bitpos) & 0xff);
5326 bfd_put_32 (input_bfd, value, hit_data);
5328 return bfd_reloc_ok;
5330 case R_ARM_GNU_VTINHERIT:
5331 case R_ARM_GNU_VTENTRY:
5332 return bfd_reloc_ok;
5334 case R_ARM_GOTOFF32:
5335 /* Relocation is relative to the start of the
5336 global offset table. */
5338 BFD_ASSERT (sgot != NULL);
5340 return bfd_reloc_notsupported;
5342 /* If we are addressing a Thumb function, we need to adjust the
5343 address by one, so that attempts to call the function pointer will
5344 correctly interpret it as Thumb code. */
5345 if (sym_flags == STT_ARM_TFUNC)
5348 /* Note that sgot->output_offset is not involved in this
5349 calculation. We always want the start of .got. If we
5350 define _GLOBAL_OFFSET_TABLE in a different way, as is
5351 permitted by the ABI, we might have to change this
5353 value -= sgot->output_section->vma;
5354 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5355 contents, rel->r_offset, value,
5359 /* Use global offset table as symbol value. */
5360 BFD_ASSERT (sgot != NULL);
5363 return bfd_reloc_notsupported;
5365 *unresolved_reloc_p = FALSE;
5366 value = sgot->output_section->vma;
5367 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5368 contents, rel->r_offset, value,
5372 case R_ARM_GOT_PREL:
5373 /* Relocation is to the entry for this symbol in the
5374 global offset table. */
5376 return bfd_reloc_notsupported;
5383 off = h->got.offset;
5384 BFD_ASSERT (off != (bfd_vma) -1);
5385 dyn = globals->root.dynamic_sections_created;
5387 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5389 && SYMBOL_REFERENCES_LOCAL (info, h))
5390 || (ELF_ST_VISIBILITY (h->other)
5391 && h->root.type == bfd_link_hash_undefweak))
5393 /* This is actually a static link, or it is a -Bsymbolic link
5394 and the symbol is defined locally. We must initialize this
5395 entry in the global offset table. Since the offset must
5396 always be a multiple of 4, we use the least significant bit
5397 to record whether we have initialized it already.
5399 When doing a dynamic link, we create a .rel(a).got relocation
5400 entry to initialize the value. This is done in the
5401 finish_dynamic_symbol routine. */
5406 /* If we are addressing a Thumb function, we need to
5407 adjust the address by one, so that attempts to
5408 call the function pointer will correctly
5409 interpret it as Thumb code. */
5410 if (sym_flags == STT_ARM_TFUNC)
5413 bfd_put_32 (output_bfd, value, sgot->contents + off);
5418 *unresolved_reloc_p = FALSE;
5420 value = sgot->output_offset + off;
5426 BFD_ASSERT (local_got_offsets != NULL &&
5427 local_got_offsets[r_symndx] != (bfd_vma) -1);
5429 off = local_got_offsets[r_symndx];
5431 /* The offset must always be a multiple of 4. We use the
5432 least significant bit to record whether we have already
5433 generated the necessary reloc. */
5438 /* If we are addressing a Thumb function, we need to
5439 adjust the address by one, so that attempts to
5440 call the function pointer will correctly
5441 interpret it as Thumb code. */
5442 if (sym_flags == STT_ARM_TFUNC)
5445 if (globals->use_rel)
5446 bfd_put_32 (output_bfd, value, sgot->contents + off);
5451 Elf_Internal_Rela outrel;
5454 srelgot = (bfd_get_section_by_name
5455 (dynobj, RELOC_SECTION (globals, ".got")));
5456 BFD_ASSERT (srelgot != NULL);
5458 outrel.r_addend = addend + value;
5459 outrel.r_offset = (sgot->output_section->vma
5460 + sgot->output_offset
5462 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
5463 loc = srelgot->contents;
5464 loc += srelgot->reloc_count++ * RELOC_SIZE (globals);
5465 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
5468 local_got_offsets[r_symndx] |= 1;
5471 value = sgot->output_offset + off;
5473 if (r_type != R_ARM_GOT32)
5474 value += sgot->output_section->vma;
5476 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5477 contents, rel->r_offset, value,
5480 case R_ARM_TLS_LDO32:
5481 value = value - dtpoff_base (info);
5483 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5484 contents, rel->r_offset, value,
5487 case R_ARM_TLS_LDM32:
5491 if (globals->sgot == NULL)
5494 off = globals->tls_ldm_got.offset;
5500 /* If we don't know the module number, create a relocation
5504 Elf_Internal_Rela outrel;
5507 if (globals->srelgot == NULL)
5510 outrel.r_addend = 0;
5511 outrel.r_offset = (globals->sgot->output_section->vma
5512 + globals->sgot->output_offset + off);
5513 outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
5515 if (globals->use_rel)
5516 bfd_put_32 (output_bfd, outrel.r_addend,
5517 globals->sgot->contents + off);
5519 loc = globals->srelgot->contents;
5520 loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals);
5521 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
5524 bfd_put_32 (output_bfd, 1, globals->sgot->contents + off);
5526 globals->tls_ldm_got.offset |= 1;
5529 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
5530 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
5532 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5533 contents, rel->r_offset, value,
5537 case R_ARM_TLS_GD32:
5538 case R_ARM_TLS_IE32:
5544 if (globals->sgot == NULL)
5551 dyn = globals->root.dynamic_sections_created;
5552 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5554 || !SYMBOL_REFERENCES_LOCAL (info, h)))
5556 *unresolved_reloc_p = FALSE;
5559 off = h->got.offset;
5560 tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
5564 if (local_got_offsets == NULL)
5566 off = local_got_offsets[r_symndx];
5567 tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
5570 if (tls_type == GOT_UNKNOWN)
5577 bfd_boolean need_relocs = FALSE;
5578 Elf_Internal_Rela outrel;
5579 bfd_byte *loc = NULL;
5582 /* The GOT entries have not been initialized yet. Do it
5583 now, and emit any relocations. If both an IE GOT and a
5584 GD GOT are necessary, we emit the GD first. */
5586 if ((info->shared || indx != 0)
5588 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5589 || h->root.type != bfd_link_hash_undefweak))
5592 if (globals->srelgot == NULL)
5594 loc = globals->srelgot->contents;
5595 loc += globals->srelgot->reloc_count * RELOC_SIZE (globals);
5598 if (tls_type & GOT_TLS_GD)
5602 outrel.r_addend = 0;
5603 outrel.r_offset = (globals->sgot->output_section->vma
5604 + globals->sgot->output_offset
5606 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
5608 if (globals->use_rel)
5609 bfd_put_32 (output_bfd, outrel.r_addend,
5610 globals->sgot->contents + cur_off);
5612 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
5613 globals->srelgot->reloc_count++;
5614 loc += RELOC_SIZE (globals);
5617 bfd_put_32 (output_bfd, value - dtpoff_base (info),
5618 globals->sgot->contents + cur_off + 4);
5621 outrel.r_addend = 0;
5622 outrel.r_info = ELF32_R_INFO (indx,
5623 R_ARM_TLS_DTPOFF32);
5624 outrel.r_offset += 4;
5626 if (globals->use_rel)
5627 bfd_put_32 (output_bfd, outrel.r_addend,
5628 globals->sgot->contents + cur_off + 4);
5631 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
5632 globals->srelgot->reloc_count++;
5633 loc += RELOC_SIZE (globals);
5638 /* If we are not emitting relocations for a
5639 general dynamic reference, then we must be in a
5640 static link or an executable link with the
5641 symbol binding locally. Mark it as belonging
5642 to module 1, the executable. */
5643 bfd_put_32 (output_bfd, 1,
5644 globals->sgot->contents + cur_off);
5645 bfd_put_32 (output_bfd, value - dtpoff_base (info),
5646 globals->sgot->contents + cur_off + 4);
5652 if (tls_type & GOT_TLS_IE)
5657 outrel.r_addend = value - dtpoff_base (info);
5659 outrel.r_addend = 0;
5660 outrel.r_offset = (globals->sgot->output_section->vma
5661 + globals->sgot->output_offset
5663 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
5665 if (globals->use_rel)
5666 bfd_put_32 (output_bfd, outrel.r_addend,
5667 globals->sgot->contents + cur_off);
5669 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
5670 globals->srelgot->reloc_count++;
5671 loc += RELOC_SIZE (globals);
5674 bfd_put_32 (output_bfd, tpoff (info, value),
5675 globals->sgot->contents + cur_off);
5682 local_got_offsets[r_symndx] |= 1;
5685 if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
5687 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
5688 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
5690 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5691 contents, rel->r_offset, value,
5695 case R_ARM_TLS_LE32:
5698 (*_bfd_error_handler)
5699 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
5700 input_bfd, input_section,
5701 (long) rel->r_offset, howto->name);
5705 value = tpoff (info, value);
5707 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5708 contents, rel->r_offset, value,
5712 if (globals->fix_v4bx)
5714 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5716 /* Ensure that we have a BX instruction. */
5717 BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
5719 /* Preserve Rm (lowest four bits) and the condition code
5720 (highest four bits). Other bits encode MOV PC,Rm. */
5721 insn = (insn & 0xf000000f) | 0x01a0f000;
5723 bfd_put_32 (input_bfd, insn, hit_data);
5725 return bfd_reloc_ok;
5727 case R_ARM_MOVW_ABS_NC:
5728 case R_ARM_MOVT_ABS:
5729 case R_ARM_MOVW_PREL_NC:
5730 case R_ARM_MOVT_PREL:
5731 /* Until we properly support segment-base-relative addressing then
5732 we assume the segment base to be zero, as for the group relocations.
5733 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
5734 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
5735 case R_ARM_MOVW_BREL_NC:
5736 case R_ARM_MOVW_BREL:
5737 case R_ARM_MOVT_BREL:
5739 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5741 if (globals->use_rel)
5743 addend = ((insn >> 4) & 0xf000) | (insn & 0xfff);
5744 signed_addend = (addend ^ 0x10000) - 0x10000;
5747 value += signed_addend;
5749 if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL)
5750 value -= (input_section->output_section->vma
5751 + input_section->output_offset + rel->r_offset);
5753 if (r_type == R_ARM_MOVW_BREL && value >= 0x10000)
5754 return bfd_reloc_overflow;
5756 if (sym_flags == STT_ARM_TFUNC)
5759 if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL
5760 || r_type == R_ARM_MOVT_BREL)
5764 insn |= value & 0xfff;
5765 insn |= (value & 0xf000) << 4;
5766 bfd_put_32 (input_bfd, insn, hit_data);
5768 return bfd_reloc_ok;
5770 case R_ARM_THM_MOVW_ABS_NC:
5771 case R_ARM_THM_MOVT_ABS:
5772 case R_ARM_THM_MOVW_PREL_NC:
5773 case R_ARM_THM_MOVT_PREL:
5774 /* Until we properly support segment-base-relative addressing then
5775 we assume the segment base to be zero, as for the above relocations.
5776 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
5777 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
5778 as R_ARM_THM_MOVT_ABS. */
5779 case R_ARM_THM_MOVW_BREL_NC:
5780 case R_ARM_THM_MOVW_BREL:
5781 case R_ARM_THM_MOVT_BREL:
5785 insn = bfd_get_16 (input_bfd, hit_data) << 16;
5786 insn |= bfd_get_16 (input_bfd, hit_data + 2);
5788 if (globals->use_rel)
5790 addend = ((insn >> 4) & 0xf000)
5791 | ((insn >> 15) & 0x0800)
5792 | ((insn >> 4) & 0x0700)
5794 signed_addend = (addend ^ 0x10000) - 0x10000;
5797 value += signed_addend;
5799 if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL)
5800 value -= (input_section->output_section->vma
5801 + input_section->output_offset + rel->r_offset);
5803 if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000)
5804 return bfd_reloc_overflow;
5806 if (sym_flags == STT_ARM_TFUNC)
5809 if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL
5810 || r_type == R_ARM_THM_MOVT_BREL)
5814 insn |= (value & 0xf000) << 4;
5815 insn |= (value & 0x0800) << 15;
5816 insn |= (value & 0x0700) << 4;
5817 insn |= (value & 0x00ff);
5819 bfd_put_16 (input_bfd, insn >> 16, hit_data);
5820 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
5822 return bfd_reloc_ok;
5824 case R_ARM_ALU_PC_G0_NC:
5825 case R_ARM_ALU_PC_G1_NC:
5826 case R_ARM_ALU_PC_G0:
5827 case R_ARM_ALU_PC_G1:
5828 case R_ARM_ALU_PC_G2:
5829 case R_ARM_ALU_SB_G0_NC:
5830 case R_ARM_ALU_SB_G1_NC:
5831 case R_ARM_ALU_SB_G0:
5832 case R_ARM_ALU_SB_G1:
5833 case R_ARM_ALU_SB_G2:
5835 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5836 bfd_vma pc = input_section->output_section->vma
5837 + input_section->output_offset + rel->r_offset;
5838 /* sb should be the origin of the *segment* containing the symbol.
5839 It is not clear how to obtain this OS-dependent value, so we
5840 make an arbitrary choice of zero. */
5844 bfd_signed_vma signed_value;
5847 /* Determine which group of bits to select. */
5850 case R_ARM_ALU_PC_G0_NC:
5851 case R_ARM_ALU_PC_G0:
5852 case R_ARM_ALU_SB_G0_NC:
5853 case R_ARM_ALU_SB_G0:
5857 case R_ARM_ALU_PC_G1_NC:
5858 case R_ARM_ALU_PC_G1:
5859 case R_ARM_ALU_SB_G1_NC:
5860 case R_ARM_ALU_SB_G1:
5864 case R_ARM_ALU_PC_G2:
5865 case R_ARM_ALU_SB_G2:
5873 /* If REL, extract the addend from the insn. If RELA, it will
5874 have already been fetched for us. */
5875 if (globals->use_rel)
5878 bfd_vma constant = insn & 0xff;
5879 bfd_vma rotation = (insn & 0xf00) >> 8;
5882 signed_addend = constant;
5885 /* Compensate for the fact that in the instruction, the
5886 rotation is stored in multiples of 2 bits. */
5889 /* Rotate "constant" right by "rotation" bits. */
5890 signed_addend = (constant >> rotation) |
5891 (constant << (8 * sizeof (bfd_vma) - rotation));
5894 /* Determine if the instruction is an ADD or a SUB.
5895 (For REL, this determines the sign of the addend.) */
5896 negative = identify_add_or_sub (insn);
5899 (*_bfd_error_handler)
5900 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
5901 input_bfd, input_section,
5902 (long) rel->r_offset, howto->name);
5903 return bfd_reloc_overflow;
5906 signed_addend *= negative;
5909 /* Compute the value (X) to go in the place. */
5910 if (r_type == R_ARM_ALU_PC_G0_NC
5911 || r_type == R_ARM_ALU_PC_G1_NC
5912 || r_type == R_ARM_ALU_PC_G0
5913 || r_type == R_ARM_ALU_PC_G1
5914 || r_type == R_ARM_ALU_PC_G2)
5916 signed_value = value - pc + signed_addend;
5918 /* Section base relative. */
5919 signed_value = value - sb + signed_addend;
5921 /* If the target symbol is a Thumb function, then set the
5922 Thumb bit in the address. */
5923 if (sym_flags == STT_ARM_TFUNC)
5926 /* Calculate the value of the relevant G_n, in encoded
5927 constant-with-rotation format. */
5928 g_n = calculate_group_reloc_mask (abs (signed_value), group,
5931 /* Check for overflow if required. */
5932 if ((r_type == R_ARM_ALU_PC_G0
5933 || r_type == R_ARM_ALU_PC_G1
5934 || r_type == R_ARM_ALU_PC_G2
5935 || r_type == R_ARM_ALU_SB_G0
5936 || r_type == R_ARM_ALU_SB_G1
5937 || r_type == R_ARM_ALU_SB_G2) && residual != 0)
5939 (*_bfd_error_handler)
5940 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5941 input_bfd, input_section,
5942 (long) rel->r_offset, abs (signed_value), howto->name);
5943 return bfd_reloc_overflow;
5946 /* Mask out the value and the ADD/SUB part of the opcode; take care
5947 not to destroy the S bit. */
5950 /* Set the opcode according to whether the value to go in the
5951 place is negative. */
5952 if (signed_value < 0)
5957 /* Encode the offset. */
5960 bfd_put_32 (input_bfd, insn, hit_data);
5962 return bfd_reloc_ok;
5964 case R_ARM_LDR_PC_G0:
5965 case R_ARM_LDR_PC_G1:
5966 case R_ARM_LDR_PC_G2:
5967 case R_ARM_LDR_SB_G0:
5968 case R_ARM_LDR_SB_G1:
5969 case R_ARM_LDR_SB_G2:
5971 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5972 bfd_vma pc = input_section->output_section->vma
5973 + input_section->output_offset + rel->r_offset;
5974 bfd_vma sb = 0; /* See note above. */
5976 bfd_signed_vma signed_value;
5979 /* Determine which groups of bits to calculate. */
5982 case R_ARM_LDR_PC_G0:
5983 case R_ARM_LDR_SB_G0:
5987 case R_ARM_LDR_PC_G1:
5988 case R_ARM_LDR_SB_G1:
5992 case R_ARM_LDR_PC_G2:
5993 case R_ARM_LDR_SB_G2:
6001 /* If REL, extract the addend from the insn. If RELA, it will
6002 have already been fetched for us. */
6003 if (globals->use_rel)
6005 int negative = (insn & (1 << 23)) ? 1 : -1;
6006 signed_addend = negative * (insn & 0xfff);
6009 /* Compute the value (X) to go in the place. */
6010 if (r_type == R_ARM_LDR_PC_G0
6011 || r_type == R_ARM_LDR_PC_G1
6012 || r_type == R_ARM_LDR_PC_G2)
6014 signed_value = value - pc + signed_addend;
6016 /* Section base relative. */
6017 signed_value = value - sb + signed_addend;
6019 /* Calculate the value of the relevant G_{n-1} to obtain
6020 the residual at that stage. */
6021 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
6023 /* Check for overflow. */
6024 if (residual >= 0x1000)
6026 (*_bfd_error_handler)
6027 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6028 input_bfd, input_section,
6029 (long) rel->r_offset, abs (signed_value), howto->name);
6030 return bfd_reloc_overflow;
6033 /* Mask out the value and U bit. */
6036 /* Set the U bit if the value to go in the place is non-negative. */
6037 if (signed_value >= 0)
6040 /* Encode the offset. */
6043 bfd_put_32 (input_bfd, insn, hit_data);
6045 return bfd_reloc_ok;
6047 case R_ARM_LDRS_PC_G0:
6048 case R_ARM_LDRS_PC_G1:
6049 case R_ARM_LDRS_PC_G2:
6050 case R_ARM_LDRS_SB_G0:
6051 case R_ARM_LDRS_SB_G1:
6052 case R_ARM_LDRS_SB_G2:
6054 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
6055 bfd_vma pc = input_section->output_section->vma
6056 + input_section->output_offset + rel->r_offset;
6057 bfd_vma sb = 0; /* See note above. */
6059 bfd_signed_vma signed_value;
6062 /* Determine which groups of bits to calculate. */
6065 case R_ARM_LDRS_PC_G0:
6066 case R_ARM_LDRS_SB_G0:
6070 case R_ARM_LDRS_PC_G1:
6071 case R_ARM_LDRS_SB_G1:
6075 case R_ARM_LDRS_PC_G2:
6076 case R_ARM_LDRS_SB_G2:
6084 /* If REL, extract the addend from the insn. If RELA, it will
6085 have already been fetched for us. */
6086 if (globals->use_rel)
6088 int negative = (insn & (1 << 23)) ? 1 : -1;
6089 signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf));
6092 /* Compute the value (X) to go in the place. */
6093 if (r_type == R_ARM_LDRS_PC_G0
6094 || r_type == R_ARM_LDRS_PC_G1
6095 || r_type == R_ARM_LDRS_PC_G2)
6097 signed_value = value - pc + signed_addend;
6099 /* Section base relative. */
6100 signed_value = value - sb + signed_addend;
6102 /* Calculate the value of the relevant G_{n-1} to obtain
6103 the residual at that stage. */
6104 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
6106 /* Check for overflow. */
6107 if (residual >= 0x100)
6109 (*_bfd_error_handler)
6110 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6111 input_bfd, input_section,
6112 (long) rel->r_offset, abs (signed_value), howto->name);
6113 return bfd_reloc_overflow;
6116 /* Mask out the value and U bit. */
6119 /* Set the U bit if the value to go in the place is non-negative. */
6120 if (signed_value >= 0)
6123 /* Encode the offset. */
6124 insn |= ((residual & 0xf0) << 4) | (residual & 0xf);
6126 bfd_put_32 (input_bfd, insn, hit_data);
6128 return bfd_reloc_ok;
6130 case R_ARM_LDC_PC_G0:
6131 case R_ARM_LDC_PC_G1:
6132 case R_ARM_LDC_PC_G2:
6133 case R_ARM_LDC_SB_G0:
6134 case R_ARM_LDC_SB_G1:
6135 case R_ARM_LDC_SB_G2:
6137 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
6138 bfd_vma pc = input_section->output_section->vma
6139 + input_section->output_offset + rel->r_offset;
6140 bfd_vma sb = 0; /* See note above. */
6142 bfd_signed_vma signed_value;
6145 /* Determine which groups of bits to calculate. */
6148 case R_ARM_LDC_PC_G0:
6149 case R_ARM_LDC_SB_G0:
6153 case R_ARM_LDC_PC_G1:
6154 case R_ARM_LDC_SB_G1:
6158 case R_ARM_LDC_PC_G2:
6159 case R_ARM_LDC_SB_G2:
6167 /* If REL, extract the addend from the insn. If RELA, it will
6168 have already been fetched for us. */
6169 if (globals->use_rel)
6171 int negative = (insn & (1 << 23)) ? 1 : -1;
6172 signed_addend = negative * ((insn & 0xff) << 2);
6175 /* Compute the value (X) to go in the place. */
6176 if (r_type == R_ARM_LDC_PC_G0
6177 || r_type == R_ARM_LDC_PC_G1
6178 || r_type == R_ARM_LDC_PC_G2)
6180 signed_value = value - pc + signed_addend;
6182 /* Section base relative. */
6183 signed_value = value - sb + signed_addend;
6185 /* Calculate the value of the relevant G_{n-1} to obtain
6186 the residual at that stage. */
6187 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
6189 /* Check for overflow. (The absolute value to go in the place must be
6190 divisible by four and, after having been divided by four, must
6191 fit in eight bits.) */
6192 if ((residual & 0x3) != 0 || residual >= 0x400)
6194 (*_bfd_error_handler)
6195 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6196 input_bfd, input_section,
6197 (long) rel->r_offset, abs (signed_value), howto->name);
6198 return bfd_reloc_overflow;
6201 /* Mask out the value and U bit. */
6204 /* Set the U bit if the value to go in the place is non-negative. */
6205 if (signed_value >= 0)
6208 /* Encode the offset. */
6209 insn |= residual >> 2;
6211 bfd_put_32 (input_bfd, insn, hit_data);
6213 return bfd_reloc_ok;
6216 return bfd_reloc_notsupported;
6220 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
6222 arm_add_to_rel (bfd * abfd,
6224 reloc_howto_type * howto,
6225 bfd_signed_vma increment)
6227 bfd_signed_vma addend;
6229 if (howto->type == R_ARM_THM_CALL
6230 || howto->type == R_ARM_THM_JUMP24)
6232 int upper_insn, lower_insn;
6235 upper_insn = bfd_get_16 (abfd, address);
6236 lower_insn = bfd_get_16 (abfd, address + 2);
6237 upper = upper_insn & 0x7ff;
6238 lower = lower_insn & 0x7ff;
6240 addend = (upper << 12) | (lower << 1);
6241 addend += increment;
6244 upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
6245 lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
6247 bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
6248 bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
6254 contents = bfd_get_32 (abfd, address);
6256 /* Get the (signed) value from the instruction. */
6257 addend = contents & howto->src_mask;
6258 if (addend & ((howto->src_mask + 1) >> 1))
6260 bfd_signed_vma mask;
6263 mask &= ~ howto->src_mask;
6267 /* Add in the increment, (which is a byte value). */
6268 switch (howto->type)
6271 addend += increment;
6278 addend <<= howto->size;
6279 addend += increment;
6281 /* Should we check for overflow here ? */
6283 /* Drop any undesired bits. */
6284 addend >>= howto->rightshift;
6288 contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
6290 bfd_put_32 (abfd, contents, address);
6294 #define IS_ARM_TLS_RELOC(R_TYPE) \
6295 ((R_TYPE) == R_ARM_TLS_GD32 \
6296 || (R_TYPE) == R_ARM_TLS_LDO32 \
6297 || (R_TYPE) == R_ARM_TLS_LDM32 \
6298 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
6299 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
6300 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
6301 || (R_TYPE) == R_ARM_TLS_LE32 \
6302 || (R_TYPE) == R_ARM_TLS_IE32)
6304 /* Relocate an ARM ELF section. */
6306 elf32_arm_relocate_section (bfd * output_bfd,
6307 struct bfd_link_info * info,
6309 asection * input_section,
6310 bfd_byte * contents,
6311 Elf_Internal_Rela * relocs,
6312 Elf_Internal_Sym * local_syms,
6313 asection ** local_sections)
6315 Elf_Internal_Shdr *symtab_hdr;
6316 struct elf_link_hash_entry **sym_hashes;
6317 Elf_Internal_Rela *rel;
6318 Elf_Internal_Rela *relend;
6320 struct elf32_arm_link_hash_table * globals;
6322 globals = elf32_arm_hash_table (info);
6324 symtab_hdr = & elf_symtab_hdr (input_bfd);
6325 sym_hashes = elf_sym_hashes (input_bfd);
6328 relend = relocs + input_section->reloc_count;
6329 for (; rel < relend; rel++)
6332 reloc_howto_type * howto;
6333 unsigned long r_symndx;
6334 Elf_Internal_Sym * sym;
6336 struct elf_link_hash_entry * h;
6338 bfd_reloc_status_type r;
6341 bfd_boolean unresolved_reloc = FALSE;
6342 char *error_message = NULL;
6344 r_symndx = ELF32_R_SYM (rel->r_info);
6345 r_type = ELF32_R_TYPE (rel->r_info);
6346 r_type = arm_real_reloc_type (globals, r_type);
6348 if ( r_type == R_ARM_GNU_VTENTRY
6349 || r_type == R_ARM_GNU_VTINHERIT)
6352 bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
6353 howto = bfd_reloc.howto;
6359 if (r_symndx < symtab_hdr->sh_info)
6361 sym = local_syms + r_symndx;
6362 sym_type = ELF32_ST_TYPE (sym->st_info);
6363 sec = local_sections[r_symndx];
6364 if (globals->use_rel)
6366 relocation = (sec->output_section->vma
6367 + sec->output_offset
6369 if (!info->relocatable
6370 && (sec->flags & SEC_MERGE)
6371 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
6374 bfd_vma addend, value;
6376 if (howto->rightshift)
6378 (*_bfd_error_handler)
6379 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
6380 input_bfd, input_section,
6381 (long) rel->r_offset, howto->name);
6385 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
6387 /* Get the (signed) value from the instruction. */
6388 addend = value & howto->src_mask;
6389 if (addend & ((howto->src_mask + 1) >> 1))
6391 bfd_signed_vma mask;
6394 mask &= ~ howto->src_mask;
6399 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
6401 addend += msec->output_section->vma + msec->output_offset;
6402 value = (value & ~ howto->dst_mask) | (addend & howto->dst_mask);
6403 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
6407 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
6413 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6414 r_symndx, symtab_hdr, sym_hashes,
6416 unresolved_reloc, warned);
6421 if (sec != NULL && elf_discarded_section (sec))
6423 /* For relocs against symbols from removed linkonce sections,
6424 or sections discarded by a linker script, we just want the
6425 section contents zeroed. Avoid any special processing. */
6426 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6432 if (info->relocatable)
6434 /* This is a relocatable link. We don't have to change
6435 anything, unless the reloc is against a section symbol,
6436 in which case we have to adjust according to where the
6437 section symbol winds up in the output section. */
6438 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
6440 if (globals->use_rel)
6441 arm_add_to_rel (input_bfd, contents + rel->r_offset,
6442 howto, (bfd_signed_vma) sec->output_offset);
6444 rel->r_addend += sec->output_offset;
6450 name = h->root.root.string;
6453 name = (bfd_elf_string_from_elf_section
6454 (input_bfd, symtab_hdr->sh_link, sym->st_name));
6455 if (name == NULL || *name == '\0')
6456 name = bfd_section_name (input_bfd, sec);
6460 && r_type != R_ARM_NONE
6462 || h->root.type == bfd_link_hash_defined
6463 || h->root.type == bfd_link_hash_defweak)
6464 && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
6466 (*_bfd_error_handler)
6467 ((sym_type == STT_TLS
6468 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
6469 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
6472 (long) rel->r_offset,
6477 r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
6478 input_section, contents, rel,
6479 relocation, info, sec, name,
6480 (h ? ELF_ST_TYPE (h->type) :
6481 ELF_ST_TYPE (sym->st_info)), h,
6482 &unresolved_reloc, &error_message);
6484 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
6485 because such sections are not SEC_ALLOC and thus ld.so will
6486 not process them. */
6487 if (unresolved_reloc
6488 && !((input_section->flags & SEC_DEBUGGING) != 0
6491 (*_bfd_error_handler)
6492 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6495 (long) rel->r_offset,
6497 h->root.root.string);
6501 if (r != bfd_reloc_ok)
6505 case bfd_reloc_overflow:
6506 /* If the overflowing reloc was to an undefined symbol,
6507 we have already printed one error message and there
6508 is no point complaining again. */
6510 h->root.type != bfd_link_hash_undefined)
6511 && (!((*info->callbacks->reloc_overflow)
6512 (info, (h ? &h->root : NULL), name, howto->name,
6513 (bfd_vma) 0, input_bfd, input_section,
6518 case bfd_reloc_undefined:
6519 if (!((*info->callbacks->undefined_symbol)
6520 (info, name, input_bfd, input_section,
6521 rel->r_offset, TRUE)))
6525 case bfd_reloc_outofrange:
6526 error_message = _("out of range");
6529 case bfd_reloc_notsupported:
6530 error_message = _("unsupported relocation");
6533 case bfd_reloc_dangerous:
6534 /* error_message should already be set. */
6538 error_message = _("unknown error");
6542 BFD_ASSERT (error_message != NULL);
6543 if (!((*info->callbacks->reloc_dangerous)
6544 (info, error_message, input_bfd, input_section,
6555 /* Set the right machine number. */
6558 elf32_arm_object_p (bfd *abfd)
6562 mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
6564 if (mach != bfd_mach_arm_unknown)
6565 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
6567 else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
6568 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
6571 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
6576 /* Function to keep ARM specific flags in the ELF header. */
6579 elf32_arm_set_private_flags (bfd *abfd, flagword flags)
6581 if (elf_flags_init (abfd)
6582 && elf_elfheader (abfd)->e_flags != flags)
6584 if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
6586 if (flags & EF_ARM_INTERWORK)
6587 (*_bfd_error_handler)
6588 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
6592 (_("Warning: Clearing the interworking flag of %B due to outside request"),
6598 elf_elfheader (abfd)->e_flags = flags;
6599 elf_flags_init (abfd) = TRUE;
6605 /* Copy backend specific data from one object module to another. */
6608 elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
6613 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
6616 in_flags = elf_elfheader (ibfd)->e_flags;
6617 out_flags = elf_elfheader (obfd)->e_flags;
6619 if (elf_flags_init (obfd)
6620 && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
6621 && in_flags != out_flags)
6623 /* Cannot mix APCS26 and APCS32 code. */
6624 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
6627 /* Cannot mix float APCS and non-float APCS code. */
6628 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
6631 /* If the src and dest have different interworking flags
6632 then turn off the interworking bit. */
6633 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
6635 if (out_flags & EF_ARM_INTERWORK)
6637 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
6640 in_flags &= ~EF_ARM_INTERWORK;
6643 /* Likewise for PIC, though don't warn for this case. */
6644 if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
6645 in_flags &= ~EF_ARM_PIC;
6648 elf_elfheader (obfd)->e_flags = in_flags;
6649 elf_flags_init (obfd) = TRUE;
6651 /* Also copy the EI_OSABI field. */
6652 elf_elfheader (obfd)->e_ident[EI_OSABI] =
6653 elf_elfheader (ibfd)->e_ident[EI_OSABI];
6655 /* Copy object attributes. */
6656 _bfd_elf_copy_obj_attributes (ibfd, obfd);
6661 /* Values for Tag_ABI_PCS_R9_use. */
6670 /* Values for Tag_ABI_PCS_RW_data. */
6673 AEABI_PCS_RW_data_absolute,
6674 AEABI_PCS_RW_data_PCrel,
6675 AEABI_PCS_RW_data_SBrel,
6676 AEABI_PCS_RW_data_unused
6679 /* Values for Tag_ABI_enum_size. */
6685 AEABI_enum_forced_wide
6688 /* Determine whether an object attribute tag takes an integer, a
6691 elf32_arm_obj_attrs_arg_type (int tag)
6693 if (tag == Tag_compatibility)
6695 else if (tag == 4 || tag == 5)
6700 return (tag & 1) != 0 ? 2 : 1;
6703 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
6704 are conflicting attributes. */
6706 elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
6708 obj_attribute *in_attr;
6709 obj_attribute *out_attr;
6710 obj_attribute_list *in_list;
6711 /* Some tags have 0 = don't care, 1 = strong requirement,
6712 2 = weak requirement. */
6713 static const int order_312[3] = {3, 1, 2};
6716 if (!elf_known_obj_attributes_proc (obfd)[0].i)
6718 /* This is the first object. Copy the attributes. */
6719 _bfd_elf_copy_obj_attributes (ibfd, obfd);
6721 /* Use the Tag_null value to indicate the attributes have been
6723 elf_known_obj_attributes_proc (obfd)[0].i = 1;
6728 in_attr = elf_known_obj_attributes_proc (ibfd);
6729 out_attr = elf_known_obj_attributes_proc (obfd);
6730 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
6731 if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i)
6733 /* Ignore mismatches if teh object doesn't use floating point. */
6734 if (out_attr[Tag_ABI_FP_number_model].i == 0)
6735 out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i;
6736 else if (in_attr[Tag_ABI_FP_number_model].i != 0)
6739 (_("ERROR: %B uses VFP register arguments, %B does not"),
6745 for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
6747 /* Merge this attribute with existing attributes. */
6750 case Tag_CPU_raw_name:
6752 /* Use whichever has the greatest architecture requirements. We
6753 won't necessarily have both the above tags, so make sure input
6754 name is non-NULL. */
6755 if (in_attr[Tag_CPU_arch].i > out_attr[Tag_CPU_arch].i
6757 out_attr[i].s = _bfd_elf_attr_strdup (obfd, in_attr[i].s);
6760 case Tag_ABI_optimization_goals:
6761 case Tag_ABI_FP_optimization_goals:
6762 /* Use the first value seen. */
6766 case Tag_ARM_ISA_use:
6767 case Tag_THUMB_ISA_use:
6771 /* ??? Do NEON and WMMX conflict? */
6772 case Tag_ABI_FP_rounding:
6773 case Tag_ABI_FP_denormal:
6774 case Tag_ABI_FP_exceptions:
6775 case Tag_ABI_FP_user_exceptions:
6776 case Tag_ABI_FP_number_model:
6777 case Tag_ABI_align8_preserved:
6778 case Tag_ABI_HardFP_use:
6779 /* Use the largest value specified. */
6780 if (in_attr[i].i > out_attr[i].i)
6781 out_attr[i].i = in_attr[i].i;
6784 case Tag_CPU_arch_profile:
6785 /* Warn if conflicting architecture profiles used. */
6786 if (out_attr[i].i && in_attr[i].i && in_attr[i].i != out_attr[i].i)
6789 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
6790 ibfd, in_attr[i].i, out_attr[i].i);
6794 out_attr[i].i = in_attr[i].i;
6796 case Tag_PCS_config:
6797 if (out_attr[i].i == 0)
6798 out_attr[i].i = in_attr[i].i;
6799 else if (in_attr[i].i != 0 && out_attr[i].i != 0)
6801 /* It's sometimes ok to mix different configs, so this is only
6804 (_("Warning: %B: Conflicting platform configuration"), ibfd);
6807 case Tag_ABI_PCS_R9_use:
6808 if (in_attr[i].i != out_attr[i].i
6809 && out_attr[i].i != AEABI_R9_unused
6810 && in_attr[i].i != AEABI_R9_unused)
6813 (_("ERROR: %B: Conflicting use of R9"), ibfd);
6816 if (out_attr[i].i == AEABI_R9_unused)
6817 out_attr[i].i = in_attr[i].i;
6819 case Tag_ABI_PCS_RW_data:
6820 if (in_attr[i].i == AEABI_PCS_RW_data_SBrel
6821 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB
6822 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused)
6825 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
6829 /* Use the smallest value specified. */
6830 if (in_attr[i].i < out_attr[i].i)
6831 out_attr[i].i = in_attr[i].i;
6833 case Tag_ABI_PCS_RO_data:
6834 /* Use the smallest value specified. */
6835 if (in_attr[i].i < out_attr[i].i)
6836 out_attr[i].i = in_attr[i].i;
6838 case Tag_ABI_PCS_GOT_use:
6839 if (in_attr[i].i > 2 || out_attr[i].i > 2
6840 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
6841 out_attr[i].i = in_attr[i].i;
6843 case Tag_ABI_PCS_wchar_t:
6844 if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i)
6847 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd);
6851 out_attr[i].i = in_attr[i].i;
6853 case Tag_ABI_align8_needed:
6854 /* ??? Check against Tag_ABI_align8_preserved. */
6855 if (in_attr[i].i > 2 || out_attr[i].i > 2
6856 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
6857 out_attr[i].i = in_attr[i].i;
6859 case Tag_ABI_enum_size:
6860 if (in_attr[i].i != AEABI_enum_unused)
6862 if (out_attr[i].i == AEABI_enum_unused
6863 || out_attr[i].i == AEABI_enum_forced_wide)
6865 /* The existing object is compatible with anything.
6866 Use whatever requirements the new object has. */
6867 out_attr[i].i = in_attr[i].i;
6869 else if (in_attr[i].i != AEABI_enum_forced_wide
6870 && out_attr[i].i != in_attr[i].i
6871 && !elf_arm_tdata (obfd)->no_enum_size_warning)
6873 const char *aeabi_enum_names[] =
6874 { "", "variable-size", "32-bit", "" };
6876 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
6877 ibfd, aeabi_enum_names[in_attr[i].i],
6878 aeabi_enum_names[out_attr[i].i]);
6882 case Tag_ABI_VFP_args:
6885 case Tag_ABI_WMMX_args:
6886 if (in_attr[i].i != out_attr[i].i)
6889 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
6894 default: /* All known attributes should be explicitly covered. */
6898 if (in_attr[i].type && !out_attr[i].type)
6899 switch (in_attr[i].type)
6903 out_attr[i].type = 1;
6908 out_attr[i].type = 2;
6916 /* Merge Tag_compatibility attributes and any common GNU ones. */
6917 _bfd_elf_merge_object_attributes (ibfd, obfd);
6919 /* Check for any attributes not known on ARM. */
6920 in_list = elf_other_obj_attributes_proc (ibfd);
6921 while (in_list && in_list->tag == Tag_compatibility)
6922 in_list = in_list->next;
6924 for (; in_list; in_list = in_list->next)
6926 if ((in_list->tag & 128) < 64)
6929 (_("Warning: %B: Unknown EABI object attribute %d"),
6930 ibfd, in_list->tag);
6938 /* Return TRUE if the two EABI versions are incompatible. */
6941 elf32_arm_versions_compatible (unsigned iver, unsigned over)
6943 /* v4 and v5 are the same spec before and after it was released,
6944 so allow mixing them. */
6945 if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5)
6946 || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4))
6949 return (iver == over);
6952 /* Merge backend specific data from an object file to the output
6953 object file when linking. */
6956 elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
6960 bfd_boolean flags_compatible = TRUE;
6963 /* Check if we have the same endianess. */
6964 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
6967 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
6970 if (!elf32_arm_merge_eabi_attributes (ibfd, obfd))
6973 /* The input BFD must have had its flags initialised. */
6974 /* The following seems bogus to me -- The flags are initialized in
6975 the assembler but I don't think an elf_flags_init field is
6976 written into the object. */
6977 /* BFD_ASSERT (elf_flags_init (ibfd)); */
6979 in_flags = elf_elfheader (ibfd)->e_flags;
6980 out_flags = elf_elfheader (obfd)->e_flags;
6982 if (!elf_flags_init (obfd))
6984 /* If the input is the default architecture and had the default
6985 flags then do not bother setting the flags for the output
6986 architecture, instead allow future merges to do this. If no
6987 future merges ever set these flags then they will retain their
6988 uninitialised values, which surprise surprise, correspond
6989 to the default values. */
6990 if (bfd_get_arch_info (ibfd)->the_default
6991 && elf_elfheader (ibfd)->e_flags == 0)
6994 elf_flags_init (obfd) = TRUE;
6995 elf_elfheader (obfd)->e_flags = in_flags;
6997 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
6998 && bfd_get_arch_info (obfd)->the_default)
6999 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
7004 /* Determine what should happen if the input ARM architecture
7005 does not match the output ARM architecture. */
7006 if (! bfd_arm_merge_machines (ibfd, obfd))
7009 /* Identical flags must be compatible. */
7010 if (in_flags == out_flags)
7013 /* Check to see if the input BFD actually contains any sections. If
7014 not, its flags may not have been initialised either, but it
7015 cannot actually cause any incompatiblity. Do not short-circuit
7016 dynamic objects; their section list may be emptied by
7017 elf_link_add_object_symbols.
7019 Also check to see if there are no code sections in the input.
7020 In this case there is no need to check for code specific flags.
7021 XXX - do we need to worry about floating-point format compatability
7022 in data sections ? */
7023 if (!(ibfd->flags & DYNAMIC))
7025 bfd_boolean null_input_bfd = TRUE;
7026 bfd_boolean only_data_sections = TRUE;
7028 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
7030 /* Ignore synthetic glue sections. */
7031 if (strcmp (sec->name, ".glue_7")
7032 && strcmp (sec->name, ".glue_7t"))
7034 if ((bfd_get_section_flags (ibfd, sec)
7035 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
7036 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
7037 only_data_sections = FALSE;
7039 null_input_bfd = FALSE;
7044 if (null_input_bfd || only_data_sections)
7048 /* Complain about various flag mismatches. */
7049 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags),
7050 EF_ARM_EABI_VERSION (out_flags)))
7053 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
7055 (in_flags & EF_ARM_EABIMASK) >> 24,
7056 (out_flags & EF_ARM_EABIMASK) >> 24);
7060 /* Not sure what needs to be checked for EABI versions >= 1. */
7061 /* VxWorks libraries do not use these flags. */
7062 if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed
7063 && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed
7064 && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
7066 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
7069 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
7071 in_flags & EF_ARM_APCS_26 ? 26 : 32,
7072 out_flags & EF_ARM_APCS_26 ? 26 : 32);
7073 flags_compatible = FALSE;
7076 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
7078 if (in_flags & EF_ARM_APCS_FLOAT)
7080 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
7084 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
7087 flags_compatible = FALSE;
7090 if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
7092 if (in_flags & EF_ARM_VFP_FLOAT)
7094 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
7098 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
7101 flags_compatible = FALSE;
7104 if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
7106 if (in_flags & EF_ARM_MAVERICK_FLOAT)
7108 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
7112 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
7115 flags_compatible = FALSE;
7118 #ifdef EF_ARM_SOFT_FLOAT
7119 if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
7121 /* We can allow interworking between code that is VFP format
7122 layout, and uses either soft float or integer regs for
7123 passing floating point arguments and results. We already
7124 know that the APCS_FLOAT flags match; similarly for VFP
7126 if ((in_flags & EF_ARM_APCS_FLOAT) != 0
7127 || (in_flags & EF_ARM_VFP_FLOAT) == 0)
7129 if (in_flags & EF_ARM_SOFT_FLOAT)
7131 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
7135 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
7138 flags_compatible = FALSE;
7143 /* Interworking mismatch is only a warning. */
7144 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
7146 if (in_flags & EF_ARM_INTERWORK)
7149 (_("Warning: %B supports interworking, whereas %B does not"),
7155 (_("Warning: %B does not support interworking, whereas %B does"),
7161 return flags_compatible;
7164 /* Display the flags field. */
7167 elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
7169 FILE * file = (FILE *) ptr;
7170 unsigned long flags;
7172 BFD_ASSERT (abfd != NULL && ptr != NULL);
7174 /* Print normal ELF private data. */
7175 _bfd_elf_print_private_bfd_data (abfd, ptr);
7177 flags = elf_elfheader (abfd)->e_flags;
7178 /* Ignore init flag - it may not be set, despite the flags field
7179 containing valid data. */
7181 /* xgettext:c-format */
7182 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
7184 switch (EF_ARM_EABI_VERSION (flags))
7186 case EF_ARM_EABI_UNKNOWN:
7187 /* The following flag bits are GNU extensions and not part of the
7188 official ARM ELF extended ABI. Hence they are only decoded if
7189 the EABI version is not set. */
7190 if (flags & EF_ARM_INTERWORK)
7191 fprintf (file, _(" [interworking enabled]"));
7193 if (flags & EF_ARM_APCS_26)
7194 fprintf (file, " [APCS-26]");
7196 fprintf (file, " [APCS-32]");
7198 if (flags & EF_ARM_VFP_FLOAT)
7199 fprintf (file, _(" [VFP float format]"));
7200 else if (flags & EF_ARM_MAVERICK_FLOAT)
7201 fprintf (file, _(" [Maverick float format]"));
7203 fprintf (file, _(" [FPA float format]"));
7205 if (flags & EF_ARM_APCS_FLOAT)
7206 fprintf (file, _(" [floats passed in float registers]"));
7208 if (flags & EF_ARM_PIC)
7209 fprintf (file, _(" [position independent]"));
7211 if (flags & EF_ARM_NEW_ABI)
7212 fprintf (file, _(" [new ABI]"));
7214 if (flags & EF_ARM_OLD_ABI)
7215 fprintf (file, _(" [old ABI]"));
7217 if (flags & EF_ARM_SOFT_FLOAT)
7218 fprintf (file, _(" [software FP]"));
7220 flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
7221 | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
7222 | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
7223 | EF_ARM_MAVERICK_FLOAT);
7226 case EF_ARM_EABI_VER1:
7227 fprintf (file, _(" [Version1 EABI]"));
7229 if (flags & EF_ARM_SYMSARESORTED)
7230 fprintf (file, _(" [sorted symbol table]"));
7232 fprintf (file, _(" [unsorted symbol table]"));
7234 flags &= ~ EF_ARM_SYMSARESORTED;
7237 case EF_ARM_EABI_VER2:
7238 fprintf (file, _(" [Version2 EABI]"));
7240 if (flags & EF_ARM_SYMSARESORTED)
7241 fprintf (file, _(" [sorted symbol table]"));
7243 fprintf (file, _(" [unsorted symbol table]"));
7245 if (flags & EF_ARM_DYNSYMSUSESEGIDX)
7246 fprintf (file, _(" [dynamic symbols use segment index]"));
7248 if (flags & EF_ARM_MAPSYMSFIRST)
7249 fprintf (file, _(" [mapping symbols precede others]"));
7251 flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
7252 | EF_ARM_MAPSYMSFIRST);
7255 case EF_ARM_EABI_VER3:
7256 fprintf (file, _(" [Version3 EABI]"));
7259 case EF_ARM_EABI_VER4:
7260 fprintf (file, _(" [Version4 EABI]"));
7263 case EF_ARM_EABI_VER5:
7264 fprintf (file, _(" [Version5 EABI]"));
7266 if (flags & EF_ARM_BE8)
7267 fprintf (file, _(" [BE8]"));
7269 if (flags & EF_ARM_LE8)
7270 fprintf (file, _(" [LE8]"));
7272 flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
7276 fprintf (file, _(" <EABI version unrecognised>"));
7280 flags &= ~ EF_ARM_EABIMASK;
7282 if (flags & EF_ARM_RELEXEC)
7283 fprintf (file, _(" [relocatable executable]"));
7285 if (flags & EF_ARM_HASENTRY)
7286 fprintf (file, _(" [has entry point]"));
7288 flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
7291 fprintf (file, _("<Unrecognised flag bits set>"));
7299 elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
7301 switch (ELF_ST_TYPE (elf_sym->st_info))
7304 return ELF_ST_TYPE (elf_sym->st_info);
7307 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
7308 This allows us to distinguish between data used by Thumb instructions
7309 and non-data (which is probably code) inside Thumb regions of an
7311 if (type != STT_OBJECT && type != STT_TLS)
7312 return ELF_ST_TYPE (elf_sym->st_info);
7323 elf32_arm_gc_mark_hook (asection *sec,
7324 struct bfd_link_info *info,
7325 Elf_Internal_Rela *rel,
7326 struct elf_link_hash_entry *h,
7327 Elf_Internal_Sym *sym)
7330 switch (ELF32_R_TYPE (rel->r_info))
7332 case R_ARM_GNU_VTINHERIT:
7333 case R_ARM_GNU_VTENTRY:
7337 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
7340 /* Update the got entry reference counts for the section being removed. */
7343 elf32_arm_gc_sweep_hook (bfd * abfd,
7344 struct bfd_link_info * info,
7346 const Elf_Internal_Rela * relocs)
7348 Elf_Internal_Shdr *symtab_hdr;
7349 struct elf_link_hash_entry **sym_hashes;
7350 bfd_signed_vma *local_got_refcounts;
7351 const Elf_Internal_Rela *rel, *relend;
7352 struct elf32_arm_link_hash_table * globals;
7354 if (info->relocatable)
7357 globals = elf32_arm_hash_table (info);
7359 elf_section_data (sec)->local_dynrel = NULL;
7361 symtab_hdr = & elf_symtab_hdr (abfd);
7362 sym_hashes = elf_sym_hashes (abfd);
7363 local_got_refcounts = elf_local_got_refcounts (abfd);
7365 check_use_blx(globals);
7367 relend = relocs + sec->reloc_count;
7368 for (rel = relocs; rel < relend; rel++)
7370 unsigned long r_symndx;
7371 struct elf_link_hash_entry *h = NULL;
7374 r_symndx = ELF32_R_SYM (rel->r_info);
7375 if (r_symndx >= symtab_hdr->sh_info)
7377 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7378 while (h->root.type == bfd_link_hash_indirect
7379 || h->root.type == bfd_link_hash_warning)
7380 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7383 r_type = ELF32_R_TYPE (rel->r_info);
7384 r_type = arm_real_reloc_type (globals, r_type);
7388 case R_ARM_GOT_PREL:
7389 case R_ARM_TLS_GD32:
7390 case R_ARM_TLS_IE32:
7393 if (h->got.refcount > 0)
7394 h->got.refcount -= 1;
7396 else if (local_got_refcounts != NULL)
7398 if (local_got_refcounts[r_symndx] > 0)
7399 local_got_refcounts[r_symndx] -= 1;
7403 case R_ARM_TLS_LDM32:
7404 elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1;
7408 case R_ARM_ABS32_NOI:
7410 case R_ARM_REL32_NOI:
7416 case R_ARM_THM_CALL:
7417 case R_ARM_THM_JUMP24:
7418 case R_ARM_THM_JUMP19:
7419 case R_ARM_MOVW_ABS_NC:
7420 case R_ARM_MOVT_ABS:
7421 case R_ARM_MOVW_PREL_NC:
7422 case R_ARM_MOVT_PREL:
7423 case R_ARM_THM_MOVW_ABS_NC:
7424 case R_ARM_THM_MOVT_ABS:
7425 case R_ARM_THM_MOVW_PREL_NC:
7426 case R_ARM_THM_MOVT_PREL:
7427 /* Should the interworking branches be here also? */
7431 struct elf32_arm_link_hash_entry *eh;
7432 struct elf32_arm_relocs_copied **pp;
7433 struct elf32_arm_relocs_copied *p;
7435 eh = (struct elf32_arm_link_hash_entry *) h;
7437 if (h->plt.refcount > 0)
7439 h->plt.refcount -= 1;
7440 if (r_type == R_ARM_THM_CALL)
7441 eh->plt_maybe_thumb_refcount--;
7443 if (r_type == R_ARM_THM_JUMP24
7444 || r_type == R_ARM_THM_JUMP19)
7445 eh->plt_thumb_refcount--;
7448 if (r_type == R_ARM_ABS32
7449 || r_type == R_ARM_REL32
7450 || r_type == R_ARM_ABS32_NOI
7451 || r_type == R_ARM_REL32_NOI)
7453 for (pp = &eh->relocs_copied; (p = *pp) != NULL;
7455 if (p->section == sec)
7458 if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32
7459 || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI)
7477 /* Look through the relocs for a section during the first phase. */
7480 elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
7481 asection *sec, const Elf_Internal_Rela *relocs)
7483 Elf_Internal_Shdr *symtab_hdr;
7484 struct elf_link_hash_entry **sym_hashes;
7485 const Elf_Internal_Rela *rel;
7486 const Elf_Internal_Rela *rel_end;
7489 bfd_vma *local_got_offsets;
7490 struct elf32_arm_link_hash_table *htab;
7492 if (info->relocatable)
7495 BFD_ASSERT (is_arm_elf (abfd));
7497 htab = elf32_arm_hash_table (info);
7500 /* Create dynamic sections for relocatable executables so that we can
7501 copy relocations. */
7502 if (htab->root.is_relocatable_executable
7503 && ! htab->root.dynamic_sections_created)
7505 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
7509 dynobj = elf_hash_table (info)->dynobj;
7510 local_got_offsets = elf_local_got_offsets (abfd);
7512 symtab_hdr = & elf_symtab_hdr (abfd);
7513 sym_hashes = elf_sym_hashes (abfd);
7515 rel_end = relocs + sec->reloc_count;
7516 for (rel = relocs; rel < rel_end; rel++)
7518 struct elf_link_hash_entry *h;
7519 struct elf32_arm_link_hash_entry *eh;
7520 unsigned long r_symndx;
7523 r_symndx = ELF32_R_SYM (rel->r_info);
7524 r_type = ELF32_R_TYPE (rel->r_info);
7525 r_type = arm_real_reloc_type (htab, r_type);
7527 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
7529 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
7534 if (r_symndx < symtab_hdr->sh_info)
7538 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7539 while (h->root.type == bfd_link_hash_indirect
7540 || h->root.type == bfd_link_hash_warning)
7541 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7544 eh = (struct elf32_arm_link_hash_entry *) h;
7549 case R_ARM_GOT_PREL:
7550 case R_ARM_TLS_GD32:
7551 case R_ARM_TLS_IE32:
7552 /* This symbol requires a global offset table entry. */
7554 int tls_type, old_tls_type;
7558 case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
7559 case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
7560 default: tls_type = GOT_NORMAL; break;
7566 old_tls_type = elf32_arm_hash_entry (h)->tls_type;
7570 bfd_signed_vma *local_got_refcounts;
7572 /* This is a global offset table entry for a local symbol. */
7573 local_got_refcounts = elf_local_got_refcounts (abfd);
7574 if (local_got_refcounts == NULL)
7578 size = symtab_hdr->sh_info;
7579 size *= (sizeof (bfd_signed_vma) + sizeof(char));
7580 local_got_refcounts = bfd_zalloc (abfd, size);
7581 if (local_got_refcounts == NULL)
7583 elf_local_got_refcounts (abfd) = local_got_refcounts;
7584 elf32_arm_local_got_tls_type (abfd)
7585 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
7587 local_got_refcounts[r_symndx] += 1;
7588 old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
7591 /* We will already have issued an error message if there is a
7592 TLS / non-TLS mismatch, based on the symbol type. We don't
7593 support any linker relaxations. So just combine any TLS
7595 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
7596 && tls_type != GOT_NORMAL)
7597 tls_type |= old_tls_type;
7599 if (old_tls_type != tls_type)
7602 elf32_arm_hash_entry (h)->tls_type = tls_type;
7604 elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
7609 case R_ARM_TLS_LDM32:
7610 if (r_type == R_ARM_TLS_LDM32)
7611 htab->tls_ldm_got.refcount++;
7614 case R_ARM_GOTOFF32:
7616 if (htab->sgot == NULL)
7618 if (htab->root.dynobj == NULL)
7619 htab->root.dynobj = abfd;
7620 if (!create_got_section (htab->root.dynobj, info))
7626 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
7627 ldr __GOTT_INDEX__ offsets. */
7628 if (!htab->vxworks_p)
7633 case R_ARM_ABS32_NOI:
7635 case R_ARM_REL32_NOI:
7641 case R_ARM_THM_CALL:
7642 case R_ARM_THM_JUMP24:
7643 case R_ARM_THM_JUMP19:
7644 case R_ARM_MOVW_ABS_NC:
7645 case R_ARM_MOVT_ABS:
7646 case R_ARM_MOVW_PREL_NC:
7647 case R_ARM_MOVT_PREL:
7648 case R_ARM_THM_MOVW_ABS_NC:
7649 case R_ARM_THM_MOVT_ABS:
7650 case R_ARM_THM_MOVW_PREL_NC:
7651 case R_ARM_THM_MOVT_PREL:
7652 /* Should the interworking branches be listed here? */
7655 /* If this reloc is in a read-only section, we might
7656 need a copy reloc. We can't check reliably at this
7657 stage whether the section is read-only, as input
7658 sections have not yet been mapped to output sections.
7659 Tentatively set the flag for now, and correct in
7660 adjust_dynamic_symbol. */
7664 /* We may need a .plt entry if the function this reloc
7665 refers to is in a different object. We can't tell for
7666 sure yet, because something later might force the
7668 if (r_type != R_ARM_ABS32
7669 && r_type != R_ARM_REL32
7670 && r_type != R_ARM_ABS32_NOI
7671 && r_type != R_ARM_REL32_NOI
7672 && r_type != R_ARM_ABS12)
7675 /* If we create a PLT entry, this relocation will reference
7676 it, even if it's an ABS32 relocation. */
7677 h->plt.refcount += 1;
7679 /* It's too early to use htab->use_blx here, so we have to
7680 record possible blx references separately from
7681 relocs that definitely need a thumb stub. */
7683 if (r_type == R_ARM_THM_CALL)
7684 eh->plt_maybe_thumb_refcount += 1;
7686 if (r_type == R_ARM_THM_JUMP24
7687 || r_type == R_ARM_THM_JUMP19)
7688 eh->plt_thumb_refcount += 1;
7691 /* If we are creating a shared library or relocatable executable,
7692 and this is a reloc against a global symbol, or a non PC
7693 relative reloc against a local symbol, then we need to copy
7694 the reloc into the shared library. However, if we are linking
7695 with -Bsymbolic, we do not need to copy a reloc against a
7696 global symbol which is defined in an object we are
7697 including in the link (i.e., DEF_REGULAR is set). At
7698 this point we have not seen all the input files, so it is
7699 possible that DEF_REGULAR is not set now but will be set
7700 later (it is never cleared). We account for that
7701 possibility below by storing information in the
7702 relocs_copied field of the hash table entry. */
7703 if ((info->shared || htab->root.is_relocatable_executable)
7704 && (sec->flags & SEC_ALLOC) != 0
7705 && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI)
7706 || (h != NULL && ! h->needs_plt
7707 && (! info->symbolic || ! h->def_regular))))
7709 struct elf32_arm_relocs_copied *p, **head;
7711 /* When creating a shared object, we must copy these
7712 reloc types into the output file. We create a reloc
7713 section in dynobj and make room for this reloc. */
7718 name = (bfd_elf_string_from_elf_section
7720 elf_elfheader (abfd)->e_shstrndx,
7721 elf_section_data (sec)->rel_hdr.sh_name));
7725 BFD_ASSERT (reloc_section_p (htab, name, sec));
7727 sreloc = bfd_get_section_by_name (dynobj, name);
7732 flags = (SEC_HAS_CONTENTS | SEC_READONLY
7733 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
7734 if ((sec->flags & SEC_ALLOC) != 0
7735 /* BPABI objects never have dynamic
7736 relocations mapped. */
7737 && !htab->symbian_p)
7738 flags |= SEC_ALLOC | SEC_LOAD;
7739 sreloc = bfd_make_section_with_flags (dynobj,
7743 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
7747 elf_section_data (sec)->sreloc = sreloc;
7750 /* If this is a global symbol, we count the number of
7751 relocations we need for this symbol. */
7754 head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied;
7758 /* Track dynamic relocs needed for local syms too.
7759 We really need local syms available to do this
7765 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
7770 vpp = &elf_section_data (s)->local_dynrel;
7771 head = (struct elf32_arm_relocs_copied **) vpp;
7775 if (p == NULL || p->section != sec)
7777 bfd_size_type amt = sizeof *p;
7779 p = bfd_alloc (htab->root.dynobj, amt);
7789 if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI)
7795 /* This relocation describes the C++ object vtable hierarchy.
7796 Reconstruct it for later use during GC. */
7797 case R_ARM_GNU_VTINHERIT:
7798 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
7802 /* This relocation describes which C++ vtable entries are actually
7803 used. Record for later use during GC. */
7804 case R_ARM_GNU_VTENTRY:
7805 BFD_ASSERT (h != NULL);
7807 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
7816 /* Unwinding tables are not referenced directly. This pass marks them as
7817 required if the corresponding code section is marked. */
7820 elf32_arm_gc_mark_extra_sections(struct bfd_link_info *info,
7821 elf_gc_mark_hook_fn gc_mark_hook)
7824 Elf_Internal_Shdr **elf_shdrp;
7827 /* Marking EH data may cause additional code sections to be marked,
7828 requiring multiple passes. */
7833 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
7837 if (! is_arm_elf (sub))
7840 elf_shdrp = elf_elfsections (sub);
7841 for (o = sub->sections; o != NULL; o = o->next)
7843 Elf_Internal_Shdr *hdr;
7845 hdr = &elf_section_data (o)->this_hdr;
7846 if (hdr->sh_type == SHT_ARM_EXIDX && hdr->sh_link
7848 && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
7851 if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
7861 /* Treat mapping symbols as special target symbols. */
7864 elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
7866 return bfd_is_arm_special_symbol_name (sym->name,
7867 BFD_ARM_SPECIAL_SYM_TYPE_ANY);
7870 /* This is a copy of elf_find_function() from elf.c except that
7871 ARM mapping symbols are ignored when looking for function names
7872 and STT_ARM_TFUNC is considered to a function type. */
7875 arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
7879 const char ** filename_ptr,
7880 const char ** functionname_ptr)
7882 const char * filename = NULL;
7883 asymbol * func = NULL;
7884 bfd_vma low_func = 0;
7887 for (p = symbols; *p != NULL; p++)
7891 q = (elf_symbol_type *) *p;
7893 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
7898 filename = bfd_asymbol_name (&q->symbol);
7903 /* Skip mapping symbols. */
7904 if ((q->symbol.flags & BSF_LOCAL)
7905 && bfd_is_arm_special_symbol_name (q->symbol.name,
7906 BFD_ARM_SPECIAL_SYM_TYPE_ANY))
7909 if (bfd_get_section (&q->symbol) == section
7910 && q->symbol.value >= low_func
7911 && q->symbol.value <= offset)
7913 func = (asymbol *) q;
7914 low_func = q->symbol.value;
7924 *filename_ptr = filename;
7925 if (functionname_ptr)
7926 *functionname_ptr = bfd_asymbol_name (func);
7932 /* Find the nearest line to a particular section and offset, for error
7933 reporting. This code is a duplicate of the code in elf.c, except
7934 that it uses arm_elf_find_function. */
7937 elf32_arm_find_nearest_line (bfd * abfd,
7941 const char ** filename_ptr,
7942 const char ** functionname_ptr,
7943 unsigned int * line_ptr)
7945 bfd_boolean found = FALSE;
7947 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
7949 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
7950 filename_ptr, functionname_ptr,
7952 & elf_tdata (abfd)->dwarf2_find_line_info))
7954 if (!*functionname_ptr)
7955 arm_elf_find_function (abfd, section, symbols, offset,
7956 *filename_ptr ? NULL : filename_ptr,
7962 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
7963 & found, filename_ptr,
7964 functionname_ptr, line_ptr,
7965 & elf_tdata (abfd)->line_info))
7968 if (found && (*functionname_ptr || *line_ptr))
7971 if (symbols == NULL)
7974 if (! arm_elf_find_function (abfd, section, symbols, offset,
7975 filename_ptr, functionname_ptr))
7983 elf32_arm_find_inliner_info (bfd * abfd,
7984 const char ** filename_ptr,
7985 const char ** functionname_ptr,
7986 unsigned int * line_ptr)
7989 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
7990 functionname_ptr, line_ptr,
7991 & elf_tdata (abfd)->dwarf2_find_line_info);
7995 /* Adjust a symbol defined by a dynamic object and referenced by a
7996 regular object. The current definition is in some section of the
7997 dynamic object, but we're not including those sections. We have to
7998 change the definition to something the rest of the link can
8002 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
8003 struct elf_link_hash_entry * h)
8007 struct elf32_arm_link_hash_entry * eh;
8008 struct elf32_arm_link_hash_table *globals;
8010 globals = elf32_arm_hash_table (info);
8011 dynobj = elf_hash_table (info)->dynobj;
8013 /* Make sure we know what is going on here. */
8014 BFD_ASSERT (dynobj != NULL
8016 || h->u.weakdef != NULL
8019 && !h->def_regular)));
8021 eh = (struct elf32_arm_link_hash_entry *) h;
8023 /* If this is a function, put it in the procedure linkage table. We
8024 will fill in the contents of the procedure linkage table later,
8025 when we know the address of the .got section. */
8026 if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
8029 if (h->plt.refcount <= 0
8030 || SYMBOL_CALLS_LOCAL (info, h)
8031 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8032 && h->root.type == bfd_link_hash_undefweak))
8034 /* This case can occur if we saw a PLT32 reloc in an input
8035 file, but the symbol was never referred to by a dynamic
8036 object, or if all references were garbage collected. In
8037 such a case, we don't actually need to build a procedure
8038 linkage table, and we can just do a PC24 reloc instead. */
8039 h->plt.offset = (bfd_vma) -1;
8040 eh->plt_thumb_refcount = 0;
8041 eh->plt_maybe_thumb_refcount = 0;
8049 /* It's possible that we incorrectly decided a .plt reloc was
8050 needed for an R_ARM_PC24 or similar reloc to a non-function sym
8051 in check_relocs. We can't decide accurately between function
8052 and non-function syms in check-relocs; Objects loaded later in
8053 the link may change h->type. So fix it now. */
8054 h->plt.offset = (bfd_vma) -1;
8055 eh->plt_thumb_refcount = 0;
8056 eh->plt_maybe_thumb_refcount = 0;
8059 /* If this is a weak symbol, and there is a real definition, the
8060 processor independent code will have arranged for us to see the
8061 real definition first, and we can just use the same value. */
8062 if (h->u.weakdef != NULL)
8064 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
8065 || h->u.weakdef->root.type == bfd_link_hash_defweak);
8066 h->root.u.def.section = h->u.weakdef->root.u.def.section;
8067 h->root.u.def.value = h->u.weakdef->root.u.def.value;
8071 /* If there are no non-GOT references, we do not need a copy
8073 if (!h->non_got_ref)
8076 /* This is a reference to a symbol defined by a dynamic object which
8077 is not a function. */
8079 /* If we are creating a shared library, we must presume that the
8080 only references to the symbol are via the global offset table.
8081 For such cases we need not do anything here; the relocations will
8082 be handled correctly by relocate_section. Relocatable executables
8083 can reference data in shared objects directly, so we don't need to
8084 do anything here. */
8085 if (info->shared || globals->root.is_relocatable_executable)
8090 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
8091 h->root.root.string);
8095 /* We must allocate the symbol in our .dynbss section, which will
8096 become part of the .bss section of the executable. There will be
8097 an entry for this symbol in the .dynsym section. The dynamic
8098 object will contain position independent code, so all references
8099 from the dynamic object to this symbol will go through the global
8100 offset table. The dynamic linker will use the .dynsym entry to
8101 determine the address it must put in the global offset table, so
8102 both the dynamic object and the regular object will refer to the
8103 same memory location for the variable. */
8104 s = bfd_get_section_by_name (dynobj, ".dynbss");
8105 BFD_ASSERT (s != NULL);
8107 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
8108 copy the initial value out of the dynamic object and into the
8109 runtime process image. We need to remember the offset into the
8110 .rel(a).bss section we are going to use. */
8111 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
8115 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss"));
8116 BFD_ASSERT (srel != NULL);
8117 srel->size += RELOC_SIZE (globals);
8121 return _bfd_elf_adjust_dynamic_copy (h, s);
8124 /* Allocate space in .plt, .got and associated reloc sections for
8128 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
8130 struct bfd_link_info *info;
8131 struct elf32_arm_link_hash_table *htab;
8132 struct elf32_arm_link_hash_entry *eh;
8133 struct elf32_arm_relocs_copied *p;
8134 bfd_signed_vma thumb_refs;
8136 eh = (struct elf32_arm_link_hash_entry *) h;
8138 if (h->root.type == bfd_link_hash_indirect)
8141 if (h->root.type == bfd_link_hash_warning)
8142 /* When warning symbols are created, they **replace** the "real"
8143 entry in the hash table, thus we never get to see the real
8144 symbol in a hash traversal. So look at it now. */
8145 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8147 info = (struct bfd_link_info *) inf;
8148 htab = elf32_arm_hash_table (info);
8150 if (htab->root.dynamic_sections_created
8151 && h->plt.refcount > 0)
8153 /* Make sure this symbol is output as a dynamic symbol.
8154 Undefined weak syms won't yet be marked as dynamic. */
8155 if (h->dynindx == -1
8156 && !h->forced_local)
8158 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8163 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
8165 asection *s = htab->splt;
8167 /* If this is the first .plt entry, make room for the special
8170 s->size += htab->plt_header_size;
8172 h->plt.offset = s->size;
8174 /* If we will insert a Thumb trampoline before this PLT, leave room
8176 thumb_refs = eh->plt_thumb_refcount;
8178 thumb_refs += eh->plt_maybe_thumb_refcount;
8182 h->plt.offset += PLT_THUMB_STUB_SIZE;
8183 s->size += PLT_THUMB_STUB_SIZE;
8186 /* If this symbol is not defined in a regular file, and we are
8187 not generating a shared library, then set the symbol to this
8188 location in the .plt. This is required to make function
8189 pointers compare as equal between the normal executable and
8190 the shared library. */
8194 h->root.u.def.section = s;
8195 h->root.u.def.value = h->plt.offset;
8197 /* Make sure the function is not marked as Thumb, in case
8198 it is the target of an ABS32 relocation, which will
8199 point to the PLT entry. */
8200 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
8201 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
8204 /* Make room for this entry. */
8205 s->size += htab->plt_entry_size;
8207 if (!htab->symbian_p)
8209 /* We also need to make an entry in the .got.plt section, which
8210 will be placed in the .got section by the linker script. */
8211 eh->plt_got_offset = htab->sgotplt->size;
8212 htab->sgotplt->size += 4;
8215 /* We also need to make an entry in the .rel(a).plt section. */
8216 htab->srelplt->size += RELOC_SIZE (htab);
8218 /* VxWorks executables have a second set of relocations for
8219 each PLT entry. They go in a separate relocation section,
8220 which is processed by the kernel loader. */
8221 if (htab->vxworks_p && !info->shared)
8223 /* There is a relocation for the initial PLT entry:
8224 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
8225 if (h->plt.offset == htab->plt_header_size)
8226 htab->srelplt2->size += RELOC_SIZE (htab);
8228 /* There are two extra relocations for each subsequent
8229 PLT entry: an R_ARM_32 relocation for the GOT entry,
8230 and an R_ARM_32 relocation for the PLT entry. */
8231 htab->srelplt2->size += RELOC_SIZE (htab) * 2;
8236 h->plt.offset = (bfd_vma) -1;
8242 h->plt.offset = (bfd_vma) -1;
8246 if (h->got.refcount > 0)
8250 int tls_type = elf32_arm_hash_entry (h)->tls_type;
8253 /* Make sure this symbol is output as a dynamic symbol.
8254 Undefined weak syms won't yet be marked as dynamic. */
8255 if (h->dynindx == -1
8256 && !h->forced_local)
8258 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8262 if (!htab->symbian_p)
8265 h->got.offset = s->size;
8267 if (tls_type == GOT_UNKNOWN)
8270 if (tls_type == GOT_NORMAL)
8271 /* Non-TLS symbols need one GOT slot. */
8275 if (tls_type & GOT_TLS_GD)
8276 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
8278 if (tls_type & GOT_TLS_IE)
8279 /* R_ARM_TLS_IE32 needs one GOT slot. */
8283 dyn = htab->root.dynamic_sections_created;
8286 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8288 || !SYMBOL_REFERENCES_LOCAL (info, h)))
8291 if (tls_type != GOT_NORMAL
8292 && (info->shared || indx != 0)
8293 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8294 || h->root.type != bfd_link_hash_undefweak))
8296 if (tls_type & GOT_TLS_IE)
8297 htab->srelgot->size += RELOC_SIZE (htab);
8299 if (tls_type & GOT_TLS_GD)
8300 htab->srelgot->size += RELOC_SIZE (htab);
8302 if ((tls_type & GOT_TLS_GD) && indx != 0)
8303 htab->srelgot->size += RELOC_SIZE (htab);
8305 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8306 || h->root.type != bfd_link_hash_undefweak)
8308 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
8309 htab->srelgot->size += RELOC_SIZE (htab);
8313 h->got.offset = (bfd_vma) -1;
8315 /* Allocate stubs for exported Thumb functions on v4t. */
8316 if (!htab->use_blx && h->dynindx != -1
8318 && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
8319 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
8321 struct elf_link_hash_entry * th;
8322 struct bfd_link_hash_entry * bh;
8323 struct elf_link_hash_entry * myh;
8327 /* Create a new symbol to regist the real location of the function. */
8328 s = h->root.u.def.section;
8329 sprintf(name, "__real_%s", h->root.root.string);
8330 _bfd_generic_link_add_one_symbol (info, s->owner,
8331 name, BSF_GLOBAL, s,
8332 h->root.u.def.value,
8333 NULL, TRUE, FALSE, &bh);
8335 myh = (struct elf_link_hash_entry *) bh;
8336 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
8337 myh->forced_local = 1;
8338 eh->export_glue = myh;
8339 th = record_arm_to_thumb_glue (info, h);
8340 /* Point the symbol at the stub. */
8341 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
8342 h->root.u.def.section = th->root.u.def.section;
8343 h->root.u.def.value = th->root.u.def.value & ~1;
8346 if (eh->relocs_copied == NULL)
8349 /* In the shared -Bsymbolic case, discard space allocated for
8350 dynamic pc-relative relocs against symbols which turn out to be
8351 defined in regular objects. For the normal shared case, discard
8352 space for pc-relative relocs that have become local due to symbol
8353 visibility changes. */
8355 if (info->shared || htab->root.is_relocatable_executable)
8357 /* The only relocs that use pc_count are R_ARM_REL32 and
8358 R_ARM_REL32_NOI, which will appear on something like
8359 ".long foo - .". We want calls to protected symbols to resolve
8360 directly to the function rather than going via the plt. If people
8361 want function pointer comparisons to work as expected then they
8362 should avoid writing assembly like ".long foo - .". */
8363 if (SYMBOL_CALLS_LOCAL (info, h))
8365 struct elf32_arm_relocs_copied **pp;
8367 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
8369 p->count -= p->pc_count;
8378 /* Also discard relocs on undefined weak syms with non-default
8380 if (eh->relocs_copied != NULL
8381 && h->root.type == bfd_link_hash_undefweak)
8383 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8384 eh->relocs_copied = NULL;
8386 /* Make sure undefined weak symbols are output as a dynamic
8388 else if (h->dynindx == -1
8389 && !h->forced_local)
8391 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8396 else if (htab->root.is_relocatable_executable && h->dynindx == -1
8397 && h->root.type == bfd_link_hash_new)
8399 /* Output absolute symbols so that we can create relocations
8400 against them. For normal symbols we output a relocation
8401 against the section that contains them. */
8402 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8409 /* For the non-shared case, discard space for relocs against
8410 symbols which turn out to need copy relocs or are not
8416 || (htab->root.dynamic_sections_created
8417 && (h->root.type == bfd_link_hash_undefweak
8418 || h->root.type == bfd_link_hash_undefined))))
8420 /* Make sure this symbol is output as a dynamic symbol.
8421 Undefined weak syms won't yet be marked as dynamic. */
8422 if (h->dynindx == -1
8423 && !h->forced_local)
8425 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8429 /* If that succeeded, we know we'll be keeping all the
8431 if (h->dynindx != -1)
8435 eh->relocs_copied = NULL;
8440 /* Finally, allocate space. */
8441 for (p = eh->relocs_copied; p != NULL; p = p->next)
8443 asection *sreloc = elf_section_data (p->section)->sreloc;
8444 sreloc->size += p->count * RELOC_SIZE (htab);
8450 /* Find any dynamic relocs that apply to read-only sections. */
8453 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
8455 struct elf32_arm_link_hash_entry *eh;
8456 struct elf32_arm_relocs_copied *p;
8458 if (h->root.type == bfd_link_hash_warning)
8459 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8461 eh = (struct elf32_arm_link_hash_entry *) h;
8462 for (p = eh->relocs_copied; p != NULL; p = p->next)
8464 asection *s = p->section;
8466 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8468 struct bfd_link_info *info = (struct bfd_link_info *) inf;
8470 info->flags |= DF_TEXTREL;
8472 /* Not an error, just cut short the traversal. */
8480 bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info,
8483 struct elf32_arm_link_hash_table *globals;
8485 globals = elf32_arm_hash_table (info);
8486 globals->byteswap_code = byteswap_code;
8489 /* Set the sizes of the dynamic sections. */
8492 elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
8493 struct bfd_link_info * info)
8500 struct elf32_arm_link_hash_table *htab;
8502 htab = elf32_arm_hash_table (info);
8503 dynobj = elf_hash_table (info)->dynobj;
8504 BFD_ASSERT (dynobj != NULL);
8505 check_use_blx (htab);
8507 if (elf_hash_table (info)->dynamic_sections_created)
8509 /* Set the contents of the .interp section to the interpreter. */
8510 if (info->executable)
8512 s = bfd_get_section_by_name (dynobj, ".interp");
8513 BFD_ASSERT (s != NULL);
8514 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
8515 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8519 /* Set up .got offsets for local syms, and space for local dynamic
8521 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8523 bfd_signed_vma *local_got;
8524 bfd_signed_vma *end_local_got;
8525 char *local_tls_type;
8526 bfd_size_type locsymcount;
8527 Elf_Internal_Shdr *symtab_hdr;
8530 if (! is_arm_elf (ibfd))
8533 for (s = ibfd->sections; s != NULL; s = s->next)
8535 struct elf32_arm_relocs_copied *p;
8537 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
8539 if (!bfd_is_abs_section (p->section)
8540 && bfd_is_abs_section (p->section->output_section))
8542 /* Input section has been discarded, either because
8543 it is a copy of a linkonce section or due to
8544 linker script /DISCARD/, so we'll be discarding
8547 else if (p->count != 0)
8549 srel = elf_section_data (p->section)->sreloc;
8550 srel->size += p->count * RELOC_SIZE (htab);
8551 if ((p->section->output_section->flags & SEC_READONLY) != 0)
8552 info->flags |= DF_TEXTREL;
8557 local_got = elf_local_got_refcounts (ibfd);
8561 symtab_hdr = & elf_symtab_hdr (ibfd);
8562 locsymcount = symtab_hdr->sh_info;
8563 end_local_got = local_got + locsymcount;
8564 local_tls_type = elf32_arm_local_got_tls_type (ibfd);
8566 srel = htab->srelgot;
8567 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
8571 *local_got = s->size;
8572 if (*local_tls_type & GOT_TLS_GD)
8573 /* TLS_GD relocs need an 8-byte structure in the GOT. */
8575 if (*local_tls_type & GOT_TLS_IE)
8577 if (*local_tls_type == GOT_NORMAL)
8580 if (info->shared || *local_tls_type == GOT_TLS_GD)
8581 srel->size += RELOC_SIZE (htab);
8584 *local_got = (bfd_vma) -1;
8588 if (htab->tls_ldm_got.refcount > 0)
8590 /* Allocate two GOT entries and one dynamic relocation (if necessary)
8591 for R_ARM_TLS_LDM32 relocations. */
8592 htab->tls_ldm_got.offset = htab->sgot->size;
8593 htab->sgot->size += 8;
8595 htab->srelgot->size += RELOC_SIZE (htab);
8598 htab->tls_ldm_got.offset = -1;
8600 /* Allocate global sym .plt and .got entries, and space for global
8601 sym dynamic relocs. */
8602 elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info);
8604 /* Here we rummage through the found bfds to collect glue information. */
8605 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
8607 if (! is_arm_elf (ibfd))
8610 /* Initialise mapping tables for code/data. */
8611 bfd_elf32_arm_init_maps (ibfd);
8613 if (!bfd_elf32_arm_process_before_allocation (ibfd, info)
8614 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info))
8615 /* xgettext:c-format */
8616 _bfd_error_handler (_("Errors encountered processing file %s"),
8620 /* The check_relocs and adjust_dynamic_symbol entry points have
8621 determined the sizes of the various dynamic sections. Allocate
8625 for (s = dynobj->sections; s != NULL; s = s->next)
8629 if ((s->flags & SEC_LINKER_CREATED) == 0)
8632 /* It's OK to base decisions on the section name, because none
8633 of the dynobj section names depend upon the input files. */
8634 name = bfd_get_section_name (dynobj, s);
8636 if (strcmp (name, ".plt") == 0)
8638 /* Remember whether there is a PLT. */
8641 else if (CONST_STRNEQ (name, ".rel"))
8645 /* Remember whether there are any reloc sections other
8646 than .rel(a).plt and .rela.plt.unloaded. */
8647 if (s != htab->srelplt && s != htab->srelplt2)
8650 /* We use the reloc_count field as a counter if we need
8651 to copy relocs into the output file. */
8655 else if (! CONST_STRNEQ (name, ".got")
8656 && strcmp (name, ".dynbss") != 0)
8658 /* It's not one of our sections, so don't allocate space. */
8664 /* If we don't need this section, strip it from the
8665 output file. This is mostly to handle .rel(a).bss and
8666 .rel(a).plt. We must create both sections in
8667 create_dynamic_sections, because they must be created
8668 before the linker maps input sections to output
8669 sections. The linker does that before
8670 adjust_dynamic_symbol is called, and it is that
8671 function which decides whether anything needs to go
8672 into these sections. */
8673 s->flags |= SEC_EXCLUDE;
8677 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8680 /* Allocate memory for the section contents. */
8681 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
8682 if (s->contents == NULL)
8686 if (elf_hash_table (info)->dynamic_sections_created)
8688 /* Add some entries to the .dynamic section. We fill in the
8689 values later, in elf32_arm_finish_dynamic_sections, but we
8690 must add the entries now so that we get the correct size for
8691 the .dynamic section. The DT_DEBUG entry is filled in by the
8692 dynamic linker and used by the debugger. */
8693 #define add_dynamic_entry(TAG, VAL) \
8694 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8696 if (info->executable)
8698 if (!add_dynamic_entry (DT_DEBUG, 0))
8704 if ( !add_dynamic_entry (DT_PLTGOT, 0)
8705 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8706 || !add_dynamic_entry (DT_PLTREL,
8707 htab->use_rel ? DT_REL : DT_RELA)
8708 || !add_dynamic_entry (DT_JMPREL, 0))
8716 if (!add_dynamic_entry (DT_REL, 0)
8717 || !add_dynamic_entry (DT_RELSZ, 0)
8718 || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab)))
8723 if (!add_dynamic_entry (DT_RELA, 0)
8724 || !add_dynamic_entry (DT_RELASZ, 0)
8725 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
8730 /* If any dynamic relocs apply to a read-only section,
8731 then we need a DT_TEXTREL entry. */
8732 if ((info->flags & DF_TEXTREL) == 0)
8733 elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs,
8736 if ((info->flags & DF_TEXTREL) != 0)
8738 if (!add_dynamic_entry (DT_TEXTREL, 0))
8742 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
8745 #undef add_dynamic_entry
8750 /* Finish up dynamic symbol handling. We set the contents of various
8751 dynamic sections here. */
8754 elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info,
8755 struct elf_link_hash_entry * h, Elf_Internal_Sym * sym)
8758 struct elf32_arm_link_hash_table *htab;
8759 struct elf32_arm_link_hash_entry *eh;
8761 dynobj = elf_hash_table (info)->dynobj;
8762 htab = elf32_arm_hash_table (info);
8763 eh = (struct elf32_arm_link_hash_entry *) h;
8765 if (h->plt.offset != (bfd_vma) -1)
8771 Elf_Internal_Rela rel;
8773 /* This symbol has an entry in the procedure linkage table. Set
8776 BFD_ASSERT (h->dynindx != -1);
8778 splt = bfd_get_section_by_name (dynobj, ".plt");
8779 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt"));
8780 BFD_ASSERT (splt != NULL && srel != NULL);
8782 /* Fill in the entry in the procedure linkage table. */
8783 if (htab->symbian_p)
8785 put_arm_insn (htab, output_bfd,
8786 elf32_arm_symbian_plt_entry[0],
8787 splt->contents + h->plt.offset);
8788 bfd_put_32 (output_bfd,
8789 elf32_arm_symbian_plt_entry[1],
8790 splt->contents + h->plt.offset + 4);
8792 /* Fill in the entry in the .rel.plt section. */
8793 rel.r_offset = (splt->output_section->vma
8794 + splt->output_offset
8795 + h->plt.offset + 4);
8796 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
8798 /* Get the index in the procedure linkage table which
8799 corresponds to this symbol. This is the index of this symbol
8800 in all the symbols for which we are making plt entries. The
8801 first entry in the procedure linkage table is reserved. */
8802 plt_index = ((h->plt.offset - htab->plt_header_size)
8803 / htab->plt_entry_size);
8807 bfd_vma got_offset, got_address, plt_address;
8808 bfd_vma got_displacement;
8812 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
8813 BFD_ASSERT (sgot != NULL);
8815 /* Get the offset into the .got.plt table of the entry that
8816 corresponds to this function. */
8817 got_offset = eh->plt_got_offset;
8819 /* Get the index in the procedure linkage table which
8820 corresponds to this symbol. This is the index of this symbol
8821 in all the symbols for which we are making plt entries. The
8822 first three entries in .got.plt are reserved; after that
8823 symbols appear in the same order as in .plt. */
8824 plt_index = (got_offset - 12) / 4;
8826 /* Calculate the address of the GOT entry. */
8827 got_address = (sgot->output_section->vma
8828 + sgot->output_offset
8831 /* ...and the address of the PLT entry. */
8832 plt_address = (splt->output_section->vma
8833 + splt->output_offset
8836 ptr = htab->splt->contents + h->plt.offset;
8837 if (htab->vxworks_p && info->shared)
8842 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
8844 val = elf32_arm_vxworks_shared_plt_entry[i];
8846 val |= got_address - sgot->output_section->vma;
8848 val |= plt_index * RELOC_SIZE (htab);
8849 if (i == 2 || i == 5)
8850 bfd_put_32 (output_bfd, val, ptr);
8852 put_arm_insn (htab, output_bfd, val, ptr);
8855 else if (htab->vxworks_p)
8860 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
8862 val = elf32_arm_vxworks_exec_plt_entry[i];
8866 val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2);
8868 val |= plt_index * RELOC_SIZE (htab);
8869 if (i == 2 || i == 5)
8870 bfd_put_32 (output_bfd, val, ptr);
8872 put_arm_insn (htab, output_bfd, val, ptr);
8875 loc = (htab->srelplt2->contents
8876 + (plt_index * 2 + 1) * RELOC_SIZE (htab));
8878 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
8879 referencing the GOT for this PLT entry. */
8880 rel.r_offset = plt_address + 8;
8881 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
8882 rel.r_addend = got_offset;
8883 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
8884 loc += RELOC_SIZE (htab);
8886 /* Create the R_ARM_ABS32 relocation referencing the
8887 beginning of the PLT for this GOT entry. */
8888 rel.r_offset = got_address;
8889 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
8891 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
8895 bfd_signed_vma thumb_refs;
8896 /* Calculate the displacement between the PLT slot and the
8897 entry in the GOT. The eight-byte offset accounts for the
8898 value produced by adding to pc in the first instruction
8900 got_displacement = got_address - (plt_address + 8);
8902 BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
8904 thumb_refs = eh->plt_thumb_refcount;
8906 thumb_refs += eh->plt_maybe_thumb_refcount;
8910 put_thumb_insn (htab, output_bfd,
8911 elf32_arm_plt_thumb_stub[0], ptr - 4);
8912 put_thumb_insn (htab, output_bfd,
8913 elf32_arm_plt_thumb_stub[1], ptr - 2);
8916 put_arm_insn (htab, output_bfd,
8917 elf32_arm_plt_entry[0]
8918 | ((got_displacement & 0x0ff00000) >> 20),
8920 put_arm_insn (htab, output_bfd,
8921 elf32_arm_plt_entry[1]
8922 | ((got_displacement & 0x000ff000) >> 12),
8924 put_arm_insn (htab, output_bfd,
8925 elf32_arm_plt_entry[2]
8926 | (got_displacement & 0x00000fff),
8928 #ifdef FOUR_WORD_PLT
8929 bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12);
8933 /* Fill in the entry in the global offset table. */
8934 bfd_put_32 (output_bfd,
8935 (splt->output_section->vma
8936 + splt->output_offset),
8937 sgot->contents + got_offset);
8939 /* Fill in the entry in the .rel(a).plt section. */
8941 rel.r_offset = got_address;
8942 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
8945 loc = srel->contents + plt_index * RELOC_SIZE (htab);
8946 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
8948 if (!h->def_regular)
8950 /* Mark the symbol as undefined, rather than as defined in
8951 the .plt section. Leave the value alone. */
8952 sym->st_shndx = SHN_UNDEF;
8953 /* If the symbol is weak, we do need to clear the value.
8954 Otherwise, the PLT entry would provide a definition for
8955 the symbol even if the symbol wasn't defined anywhere,
8956 and so the symbol would never be NULL. */
8957 if (!h->ref_regular_nonweak)
8962 if (h->got.offset != (bfd_vma) -1
8963 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0
8964 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0)
8968 Elf_Internal_Rela rel;
8972 /* This symbol has an entry in the global offset table. Set it
8974 sgot = bfd_get_section_by_name (dynobj, ".got");
8975 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got"));
8976 BFD_ASSERT (sgot != NULL && srel != NULL);
8978 offset = (h->got.offset & ~(bfd_vma) 1);
8980 rel.r_offset = (sgot->output_section->vma
8981 + sgot->output_offset
8984 /* If this is a static link, or it is a -Bsymbolic link and the
8985 symbol is defined locally or was forced to be local because
8986 of a version file, we just want to emit a RELATIVE reloc.
8987 The entry in the global offset table will already have been
8988 initialized in the relocate_section function. */
8990 && SYMBOL_REFERENCES_LOCAL (info, h))
8992 BFD_ASSERT((h->got.offset & 1) != 0);
8993 rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
8996 rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
8997 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
9002 BFD_ASSERT((h->got.offset & 1) == 0);
9003 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
9004 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
9007 loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab);
9008 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
9014 Elf_Internal_Rela rel;
9017 /* This symbol needs a copy reloc. Set it up. */
9018 BFD_ASSERT (h->dynindx != -1
9019 && (h->root.type == bfd_link_hash_defined
9020 || h->root.type == bfd_link_hash_defweak));
9022 s = bfd_get_section_by_name (h->root.u.def.section->owner,
9023 RELOC_SECTION (htab, ".bss"));
9024 BFD_ASSERT (s != NULL);
9027 rel.r_offset = (h->root.u.def.value
9028 + h->root.u.def.section->output_section->vma
9029 + h->root.u.def.section->output_offset);
9030 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
9031 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
9032 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
9035 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
9036 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
9037 to the ".got" section. */
9038 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
9039 || (!htab->vxworks_p && h == htab->root.hgot))
9040 sym->st_shndx = SHN_ABS;
9045 /* Finish up the dynamic sections. */
9048 elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
9054 dynobj = elf_hash_table (info)->dynobj;
9056 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
9057 BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL);
9058 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
9060 if (elf_hash_table (info)->dynamic_sections_created)
9063 Elf32_External_Dyn *dyncon, *dynconend;
9064 struct elf32_arm_link_hash_table *htab;
9066 htab = elf32_arm_hash_table (info);
9067 splt = bfd_get_section_by_name (dynobj, ".plt");
9068 BFD_ASSERT (splt != NULL && sdyn != NULL);
9070 dyncon = (Elf32_External_Dyn *) sdyn->contents;
9071 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9073 for (; dyncon < dynconend; dyncon++)
9075 Elf_Internal_Dyn dyn;
9079 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9087 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9088 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9093 goto get_vma_if_bpabi;
9096 goto get_vma_if_bpabi;
9099 goto get_vma_if_bpabi;
9101 name = ".gnu.version";
9102 goto get_vma_if_bpabi;
9104 name = ".gnu.version_d";
9105 goto get_vma_if_bpabi;
9107 name = ".gnu.version_r";
9108 goto get_vma_if_bpabi;
9114 name = RELOC_SECTION (htab, ".plt");
9116 s = bfd_get_section_by_name (output_bfd, name);
9117 BFD_ASSERT (s != NULL);
9118 if (!htab->symbian_p)
9119 dyn.d_un.d_ptr = s->vma;
9121 /* In the BPABI, tags in the PT_DYNAMIC section point
9122 at the file offset, not the memory address, for the
9123 convenience of the post linker. */
9124 dyn.d_un.d_ptr = s->filepos;
9125 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9129 if (htab->symbian_p)
9134 s = bfd_get_section_by_name (output_bfd,
9135 RELOC_SECTION (htab, ".plt"));
9136 BFD_ASSERT (s != NULL);
9137 dyn.d_un.d_val = s->size;
9138 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9143 if (!htab->symbian_p)
9145 /* My reading of the SVR4 ABI indicates that the
9146 procedure linkage table relocs (DT_JMPREL) should be
9147 included in the overall relocs (DT_REL). This is
9148 what Solaris does. However, UnixWare can not handle
9149 that case. Therefore, we override the DT_RELSZ entry
9150 here to make it not include the JMPREL relocs. Since
9151 the linker script arranges for .rel(a).plt to follow all
9152 other relocation sections, we don't have to worry
9153 about changing the DT_REL entry. */
9154 s = bfd_get_section_by_name (output_bfd,
9155 RELOC_SECTION (htab, ".plt"));
9157 dyn.d_un.d_val -= s->size;
9158 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9165 /* In the BPABI, the DT_REL tag must point at the file
9166 offset, not the VMA, of the first relocation
9167 section. So, we use code similar to that in
9168 elflink.c, but do not check for SHF_ALLOC on the
9169 relcoation section, since relocations sections are
9170 never allocated under the BPABI. The comments above
9171 about Unixware notwithstanding, we include all of the
9172 relocations here. */
9173 if (htab->symbian_p)
9176 type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
9177 ? SHT_REL : SHT_RELA);
9179 for (i = 1; i < elf_numsections (output_bfd); i++)
9181 Elf_Internal_Shdr *hdr
9182 = elf_elfsections (output_bfd)[i];
9183 if (hdr->sh_type == type)
9185 if (dyn.d_tag == DT_RELSZ
9186 || dyn.d_tag == DT_RELASZ)
9187 dyn.d_un.d_val += hdr->sh_size;
9188 else if ((ufile_ptr) hdr->sh_offset
9189 <= dyn.d_un.d_val - 1)
9190 dyn.d_un.d_val = hdr->sh_offset;
9193 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9197 /* Set the bottom bit of DT_INIT/FINI if the
9198 corresponding function is Thumb. */
9200 name = info->init_function;
9203 name = info->fini_function;
9205 /* If it wasn't set by elf_bfd_final_link
9206 then there is nothing to adjust. */
9207 if (dyn.d_un.d_val != 0)
9209 struct elf_link_hash_entry * eh;
9211 eh = elf_link_hash_lookup (elf_hash_table (info), name,
9212 FALSE, FALSE, TRUE);
9213 if (eh != (struct elf_link_hash_entry *) NULL
9214 && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC)
9216 dyn.d_un.d_val |= 1;
9217 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9224 /* Fill in the first entry in the procedure linkage table. */
9225 if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size)
9227 const bfd_vma *plt0_entry;
9228 bfd_vma got_address, plt_address, got_displacement;
9230 /* Calculate the addresses of the GOT and PLT. */
9231 got_address = sgot->output_section->vma + sgot->output_offset;
9232 plt_address = splt->output_section->vma + splt->output_offset;
9234 if (htab->vxworks_p)
9236 /* The VxWorks GOT is relocated by the dynamic linker.
9237 Therefore, we must emit relocations rather than simply
9238 computing the values now. */
9239 Elf_Internal_Rela rel;
9241 plt0_entry = elf32_arm_vxworks_exec_plt0_entry;
9242 put_arm_insn (htab, output_bfd, plt0_entry[0],
9243 splt->contents + 0);
9244 put_arm_insn (htab, output_bfd, plt0_entry[1],
9245 splt->contents + 4);
9246 put_arm_insn (htab, output_bfd, plt0_entry[2],
9247 splt->contents + 8);
9248 bfd_put_32 (output_bfd, got_address, splt->contents + 12);
9250 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
9251 rel.r_offset = plt_address + 12;
9252 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
9254 SWAP_RELOC_OUT (htab) (output_bfd, &rel,
9255 htab->srelplt2->contents);
9259 got_displacement = got_address - (plt_address + 16);
9261 plt0_entry = elf32_arm_plt0_entry;
9262 put_arm_insn (htab, output_bfd, plt0_entry[0],
9263 splt->contents + 0);
9264 put_arm_insn (htab, output_bfd, plt0_entry[1],
9265 splt->contents + 4);
9266 put_arm_insn (htab, output_bfd, plt0_entry[2],
9267 splt->contents + 8);
9268 put_arm_insn (htab, output_bfd, plt0_entry[3],
9269 splt->contents + 12);
9271 #ifdef FOUR_WORD_PLT
9272 /* The displacement value goes in the otherwise-unused
9273 last word of the second entry. */
9274 bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
9276 bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
9281 /* UnixWare sets the entsize of .plt to 4, although that doesn't
9282 really seem like the right value. */
9283 if (splt->output_section->owner == output_bfd)
9284 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
9286 if (htab->vxworks_p && !info->shared && htab->splt->size > 0)
9288 /* Correct the .rel(a).plt.unloaded relocations. They will have
9289 incorrect symbol indexes. */
9293 num_plts = ((htab->splt->size - htab->plt_header_size)
9294 / htab->plt_entry_size);
9295 p = htab->srelplt2->contents + RELOC_SIZE (htab);
9297 for (; num_plts; num_plts--)
9299 Elf_Internal_Rela rel;
9301 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
9302 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
9303 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
9304 p += RELOC_SIZE (htab);
9306 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
9307 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
9308 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
9309 p += RELOC_SIZE (htab);
9314 /* Fill in the first three entries in the global offset table. */
9320 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
9322 bfd_put_32 (output_bfd,
9323 sdyn->output_section->vma + sdyn->output_offset,
9325 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
9326 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
9329 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
9336 elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
9338 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
9339 struct elf32_arm_link_hash_table *globals;
9341 i_ehdrp = elf_elfheader (abfd);
9343 if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
9344 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
9346 i_ehdrp->e_ident[EI_OSABI] = 0;
9347 i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
9351 globals = elf32_arm_hash_table (link_info);
9352 if (globals->byteswap_code)
9353 i_ehdrp->e_flags |= EF_ARM_BE8;
9357 static enum elf_reloc_type_class
9358 elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
9360 switch ((int) ELF32_R_TYPE (rela->r_info))
9362 case R_ARM_RELATIVE:
9363 return reloc_class_relative;
9364 case R_ARM_JUMP_SLOT:
9365 return reloc_class_plt;
9367 return reloc_class_copy;
9369 return reloc_class_normal;
9373 /* Set the right machine number for an Arm ELF file. */
9376 elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
9378 if (hdr->sh_type == SHT_NOTE)
9379 *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
9385 elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
9387 bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
9390 /* Return TRUE if this is an unwinding table entry. */
9393 is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
9395 return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind)
9396 || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once));
9400 /* Set the type and flags for an ARM section. We do this by
9401 the section name, which is a hack, but ought to work. */
9404 elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
9408 name = bfd_get_section_name (abfd, sec);
9410 if (is_arm_elf_unwind_section_name (abfd, name))
9412 hdr->sh_type = SHT_ARM_EXIDX;
9413 hdr->sh_flags |= SHF_LINK_ORDER;
9418 /* Handle an ARM specific section when reading an object file. This is
9419 called when bfd_section_from_shdr finds a section with an unknown
9423 elf32_arm_section_from_shdr (bfd *abfd,
9424 Elf_Internal_Shdr * hdr,
9428 /* There ought to be a place to keep ELF backend specific flags, but
9429 at the moment there isn't one. We just keep track of the
9430 sections by their name, instead. Fortunately, the ABI gives
9431 names for all the ARM specific sections, so we will probably get
9433 switch (hdr->sh_type)
9436 case SHT_ARM_PREEMPTMAP:
9437 case SHT_ARM_ATTRIBUTES:
9444 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
9450 /* A structure used to record a list of sections, independently
9451 of the next and prev fields in the asection structure. */
9452 typedef struct section_list
9455 struct section_list * next;
9456 struct section_list * prev;
9460 /* Unfortunately we need to keep a list of sections for which
9461 an _arm_elf_section_data structure has been allocated. This
9462 is because it is possible for functions like elf32_arm_write_section
9463 to be called on a section which has had an elf_data_structure
9464 allocated for it (and so the used_by_bfd field is valid) but
9465 for which the ARM extended version of this structure - the
9466 _arm_elf_section_data structure - has not been allocated. */
9467 static section_list * sections_with_arm_elf_section_data = NULL;
9470 record_section_with_arm_elf_section_data (asection * sec)
9472 struct section_list * entry;
9474 entry = bfd_malloc (sizeof (* entry));
9478 entry->next = sections_with_arm_elf_section_data;
9480 if (entry->next != NULL)
9481 entry->next->prev = entry;
9482 sections_with_arm_elf_section_data = entry;
9485 static struct section_list *
9486 find_arm_elf_section_entry (asection * sec)
9488 struct section_list * entry;
9489 static struct section_list * last_entry = NULL;
9491 /* This is a short cut for the typical case where the sections are added
9492 to the sections_with_arm_elf_section_data list in forward order and
9493 then looked up here in backwards order. This makes a real difference
9494 to the ld-srec/sec64k.exp linker test. */
9495 entry = sections_with_arm_elf_section_data;
9496 if (last_entry != NULL)
9498 if (last_entry->sec == sec)
9500 else if (last_entry->next != NULL
9501 && last_entry->next->sec == sec)
9502 entry = last_entry->next;
9505 for (; entry; entry = entry->next)
9506 if (entry->sec == sec)
9510 /* Record the entry prior to this one - it is the entry we are most
9511 likely to want to locate next time. Also this way if we have been
9512 called from unrecord_section_with_arm_elf_section_data() we will not
9513 be caching a pointer that is about to be freed. */
9514 last_entry = entry->prev;
9519 static _arm_elf_section_data *
9520 get_arm_elf_section_data (asection * sec)
9522 struct section_list * entry;
9524 entry = find_arm_elf_section_entry (sec);
9527 return elf32_arm_section_data (entry->sec);
9533 unrecord_section_with_arm_elf_section_data (asection * sec)
9535 struct section_list * entry;
9537 entry = find_arm_elf_section_entry (sec);
9541 if (entry->prev != NULL)
9542 entry->prev->next = entry->next;
9543 if (entry->next != NULL)
9544 entry->next->prev = entry->prev;
9545 if (entry == sections_with_arm_elf_section_data)
9546 sections_with_arm_elf_section_data = entry->next;
9555 struct bfd_link_info *info;
9558 bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *,
9559 asection *, struct elf_link_hash_entry *);
9560 } output_arch_syminfo;
9562 enum map_symbol_type
9570 /* Output a single PLT mapping symbol. */
9573 elf32_arm_ouput_plt_map_sym (output_arch_syminfo *osi,
9574 enum map_symbol_type type,
9577 static const char *names[3] = {"$a", "$t", "$d"};
9578 struct elf32_arm_link_hash_table *htab;
9579 Elf_Internal_Sym sym;
9581 htab = elf32_arm_hash_table (osi->info);
9582 sym.st_value = osi->sec->output_section->vma
9583 + osi->sec->output_offset
9587 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
9588 sym.st_shndx = osi->sec_shndx;
9589 if (!osi->func (osi->finfo, names[type], &sym, osi->sec, NULL))
9595 /* Output mapping symbols for PLT entries associated with H. */
9598 elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf)
9600 output_arch_syminfo *osi = (output_arch_syminfo *) inf;
9601 struct elf32_arm_link_hash_table *htab;
9602 struct elf32_arm_link_hash_entry *eh;
9605 htab = elf32_arm_hash_table (osi->info);
9607 if (h->root.type == bfd_link_hash_indirect)
9610 if (h->root.type == bfd_link_hash_warning)
9611 /* When warning symbols are created, they **replace** the "real"
9612 entry in the hash table, thus we never get to see the real
9613 symbol in a hash traversal. So look at it now. */
9614 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9616 if (h->plt.offset == (bfd_vma) -1)
9619 eh = (struct elf32_arm_link_hash_entry *) h;
9620 addr = h->plt.offset;
9621 if (htab->symbian_p)
9623 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9625 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 4))
9628 else if (htab->vxworks_p)
9630 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9632 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 8))
9634 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr + 12))
9636 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 20))
9641 bfd_signed_vma thumb_refs;
9643 thumb_refs = eh->plt_thumb_refcount;
9645 thumb_refs += eh->plt_maybe_thumb_refcount;
9649 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_THUMB, addr - 4))
9652 #ifdef FOUR_WORD_PLT
9653 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9655 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 12))
9658 /* A three-word PLT with no Thumb thunk contains only Arm code,
9659 so only need to output a mapping symbol for the first PLT entry and
9660 entries with thumb thunks. */
9661 if (thumb_refs > 0 || addr == 20)
9663 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9673 /* Output mapping symbols for linker generated sections. */
9676 elf32_arm_output_arch_local_syms (bfd *output_bfd,
9677 struct bfd_link_info *info,
9678 void *finfo, bfd_boolean (*func) (void *, const char *,
9681 struct elf_link_hash_entry *))
9683 output_arch_syminfo osi;
9684 struct elf32_arm_link_hash_table *htab;
9688 htab = elf32_arm_hash_table (info);
9689 check_use_blx(htab);
9695 /* ARM->Thumb glue. */
9696 if (htab->arm_glue_size > 0)
9698 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
9699 ARM2THUMB_GLUE_SECTION_NAME);
9701 osi.sec_shndx = _bfd_elf_section_from_bfd_section
9702 (output_bfd, osi.sec->output_section);
9703 if (info->shared || htab->root.is_relocatable_executable
9704 || htab->pic_veneer)
9705 size = ARM2THUMB_PIC_GLUE_SIZE;
9706 else if (htab->use_blx)
9707 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
9709 size = ARM2THUMB_STATIC_GLUE_SIZE;
9711 for (offset = 0; offset < htab->arm_glue_size; offset += size)
9713 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, offset);
9714 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, offset + size - 4);
9718 /* Thumb->ARM glue. */
9719 if (htab->thumb_glue_size > 0)
9721 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
9722 THUMB2ARM_GLUE_SECTION_NAME);
9724 osi.sec_shndx = _bfd_elf_section_from_bfd_section
9725 (output_bfd, osi.sec->output_section);
9726 size = THUMB2ARM_GLUE_SIZE;
9728 for (offset = 0; offset < htab->thumb_glue_size; offset += size)
9730 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_THUMB, offset);
9731 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, offset + 4);
9735 /* Finally, output mapping symbols for the PLT. */
9736 if (!htab->splt || htab->splt->size == 0)
9739 osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
9740 htab->splt->output_section);
9741 osi.sec = htab->splt;
9742 /* Output mapping symbols for the plt header. SymbianOS does not have a
9744 if (htab->vxworks_p)
9746 /* VxWorks shared libraries have no PLT header. */
9749 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0))
9751 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 12))
9755 else if (!htab->symbian_p)
9757 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0))
9759 #ifndef FOUR_WORD_PLT
9760 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 16))
9765 elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi);
9769 /* Allocate target specific section data. */
9772 elf32_arm_new_section_hook (bfd *abfd, asection *sec)
9774 if (!sec->used_by_bfd)
9776 _arm_elf_section_data *sdata;
9777 bfd_size_type amt = sizeof (*sdata);
9779 sdata = bfd_zalloc (abfd, amt);
9782 sec->used_by_bfd = sdata;
9785 record_section_with_arm_elf_section_data (sec);
9787 return _bfd_elf_new_section_hook (abfd, sec);
9791 /* Used to order a list of mapping symbols by address. */
9794 elf32_arm_compare_mapping (const void * a, const void * b)
9796 const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a;
9797 const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b;
9799 if (amap->vma > bmap->vma)
9801 else if (amap->vma < bmap->vma)
9803 else if (amap->type > bmap->type)
9804 /* Ensure results do not depend on the host qsort for objects with
9805 multiple mapping symbols at the same address by sorting on type
9808 else if (amap->type < bmap->type)
9815 /* Do code byteswapping. Return FALSE afterwards so that the section is
9816 written out as normal. */
9819 elf32_arm_write_section (bfd *output_bfd,
9820 struct bfd_link_info *link_info, asection *sec,
9823 int mapcount, errcount;
9824 _arm_elf_section_data *arm_data;
9825 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
9826 elf32_arm_section_map *map;
9827 elf32_vfp11_erratum_list *errnode;
9830 bfd_vma offset = sec->output_section->vma + sec->output_offset;
9834 /* If this section has not been allocated an _arm_elf_section_data
9835 structure then we cannot record anything. */
9836 arm_data = get_arm_elf_section_data (sec);
9837 if (arm_data == NULL)
9840 mapcount = arm_data->mapcount;
9841 map = arm_data->map;
9842 errcount = arm_data->erratumcount;
9846 unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0;
9848 for (errnode = arm_data->erratumlist; errnode != 0;
9849 errnode = errnode->next)
9851 bfd_vma index = errnode->vma - offset;
9853 switch (errnode->type)
9855 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
9857 bfd_vma branch_to_veneer;
9858 /* Original condition code of instruction, plus bit mask for
9859 ARM B instruction. */
9860 unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000)
9863 /* The instruction is before the label. */
9866 /* Above offset included in -4 below. */
9867 branch_to_veneer = errnode->u.b.veneer->vma
9870 if ((signed) branch_to_veneer < -(1 << 25)
9871 || (signed) branch_to_veneer >= (1 << 25))
9872 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
9873 "range"), output_bfd);
9875 insn |= (branch_to_veneer >> 2) & 0xffffff;
9876 contents[endianflip ^ index] = insn & 0xff;
9877 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
9878 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
9879 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
9883 case VFP11_ERRATUM_ARM_VENEER:
9885 bfd_vma branch_from_veneer;
9888 /* Take size of veneer into account. */
9889 branch_from_veneer = errnode->u.v.branch->vma
9890 - errnode->vma - 12;
9892 if ((signed) branch_from_veneer < -(1 << 25)
9893 || (signed) branch_from_veneer >= (1 << 25))
9894 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
9895 "range"), output_bfd);
9897 /* Original instruction. */
9898 insn = errnode->u.v.branch->u.b.vfp_insn;
9899 contents[endianflip ^ index] = insn & 0xff;
9900 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
9901 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
9902 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
9904 /* Branch back to insn after original insn. */
9905 insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff);
9906 contents[endianflip ^ (index + 4)] = insn & 0xff;
9907 contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff;
9908 contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff;
9909 contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff;
9922 if (globals->byteswap_code)
9924 qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
9927 for (i = 0; i < mapcount; i++)
9929 if (i == mapcount - 1)
9932 end = map[i + 1].vma;
9934 switch (map[i].type)
9937 /* Byte swap code words. */
9938 while (ptr + 3 < end)
9940 tmp = contents[ptr];
9941 contents[ptr] = contents[ptr + 3];
9942 contents[ptr + 3] = tmp;
9943 tmp = contents[ptr + 1];
9944 contents[ptr + 1] = contents[ptr + 2];
9945 contents[ptr + 2] = tmp;
9951 /* Byte swap code halfwords. */
9952 while (ptr + 1 < end)
9954 tmp = contents[ptr];
9955 contents[ptr] = contents[ptr + 1];
9956 contents[ptr + 1] = tmp;
9962 /* Leave data alone. */
9970 arm_data->mapcount = 0;
9971 arm_data->mapsize = 0;
9972 arm_data->map = NULL;
9973 unrecord_section_with_arm_elf_section_data (sec);
9979 unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED,
9981 void * ignore ATTRIBUTE_UNUSED)
9983 unrecord_section_with_arm_elf_section_data (sec);
9987 elf32_arm_close_and_cleanup (bfd * abfd)
9990 bfd_map_over_sections (abfd,
9991 unrecord_section_via_map_over_sections,
9994 return _bfd_elf_close_and_cleanup (abfd);
9998 elf32_arm_bfd_free_cached_info (bfd * abfd)
10000 if (abfd->sections)
10001 bfd_map_over_sections (abfd,
10002 unrecord_section_via_map_over_sections,
10005 return _bfd_free_cached_info (abfd);
10008 /* Display STT_ARM_TFUNC symbols as functions. */
10011 elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
10014 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
10016 if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC)
10017 elfsym->symbol.flags |= BSF_FUNCTION;
10021 /* Mangle thumb function symbols as we read them in. */
10024 elf32_arm_swap_symbol_in (bfd * abfd,
10027 Elf_Internal_Sym *dst)
10029 if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
10032 /* New EABI objects mark thumb function symbols by setting the low bit of
10033 the address. Turn these into STT_ARM_TFUNC. */
10034 if (ELF_ST_TYPE (dst->st_info) == STT_FUNC
10035 && (dst->st_value & 1))
10037 dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
10038 dst->st_value &= ~(bfd_vma) 1;
10044 /* Mangle thumb function symbols as we write them out. */
10047 elf32_arm_swap_symbol_out (bfd *abfd,
10048 const Elf_Internal_Sym *src,
10052 Elf_Internal_Sym newsym;
10054 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
10055 of the address set, as per the new EABI. We do this unconditionally
10056 because objcopy does not set the elf header flags until after
10057 it writes out the symbol table. */
10058 if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC)
10061 newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
10062 if (newsym.st_shndx != SHN_UNDEF)
10064 /* Do this only for defined symbols. At link type, the static
10065 linker will simulate the work of dynamic linker of resolving
10066 symbols and will carry over the thumbness of found symbols to
10067 the output symbol table. It's not clear how it happens, but
10068 the thumbness of undefined symbols can well be different at
10069 runtime, and writing '1' for them will be confusing for users
10070 and possibly for dynamic linker itself.
10072 newsym.st_value |= 1;
10077 bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
10080 /* Add the PT_ARM_EXIDX program header. */
10083 elf32_arm_modify_segment_map (bfd *abfd,
10084 struct bfd_link_info *info ATTRIBUTE_UNUSED)
10086 struct elf_segment_map *m;
10089 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
10090 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
10092 /* If there is already a PT_ARM_EXIDX header, then we do not
10093 want to add another one. This situation arises when running
10094 "strip"; the input binary already has the header. */
10095 m = elf_tdata (abfd)->segment_map;
10096 while (m && m->p_type != PT_ARM_EXIDX)
10100 m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
10103 m->p_type = PT_ARM_EXIDX;
10105 m->sections[0] = sec;
10107 m->next = elf_tdata (abfd)->segment_map;
10108 elf_tdata (abfd)->segment_map = m;
10115 /* We may add a PT_ARM_EXIDX program header. */
10118 elf32_arm_additional_program_headers (bfd *abfd,
10119 struct bfd_link_info *info ATTRIBUTE_UNUSED)
10123 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
10124 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
10130 /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
10132 elf32_arm_is_function_type (unsigned int type)
10134 return (type == STT_FUNC) || (type == STT_ARM_TFUNC);
10137 /* We use this to override swap_symbol_in and swap_symbol_out. */
10138 const struct elf_size_info elf32_arm_size_info = {
10139 sizeof (Elf32_External_Ehdr),
10140 sizeof (Elf32_External_Phdr),
10141 sizeof (Elf32_External_Shdr),
10142 sizeof (Elf32_External_Rel),
10143 sizeof (Elf32_External_Rela),
10144 sizeof (Elf32_External_Sym),
10145 sizeof (Elf32_External_Dyn),
10146 sizeof (Elf_External_Note),
10150 ELFCLASS32, EV_CURRENT,
10151 bfd_elf32_write_out_phdrs,
10152 bfd_elf32_write_shdrs_and_ehdr,
10153 bfd_elf32_checksum_contents,
10154 bfd_elf32_write_relocs,
10155 elf32_arm_swap_symbol_in,
10156 elf32_arm_swap_symbol_out,
10157 bfd_elf32_slurp_reloc_table,
10158 bfd_elf32_slurp_symbol_table,
10159 bfd_elf32_swap_dyn_in,
10160 bfd_elf32_swap_dyn_out,
10161 bfd_elf32_swap_reloc_in,
10162 bfd_elf32_swap_reloc_out,
10163 bfd_elf32_swap_reloca_in,
10164 bfd_elf32_swap_reloca_out
10167 #define ELF_ARCH bfd_arch_arm
10168 #define ELF_MACHINE_CODE EM_ARM
10169 #ifdef __QNXTARGET__
10170 #define ELF_MAXPAGESIZE 0x1000
10172 #define ELF_MAXPAGESIZE 0x8000
10174 #define ELF_MINPAGESIZE 0x1000
10175 #define ELF_COMMONPAGESIZE 0x1000
10177 #define bfd_elf32_mkobject elf32_arm_mkobject
10179 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
10180 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
10181 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
10182 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
10183 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
10184 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
10185 #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
10186 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
10187 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
10188 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
10189 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
10190 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
10191 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
10193 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
10194 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
10195 #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
10196 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
10197 #define elf_backend_check_relocs elf32_arm_check_relocs
10198 #define elf_backend_relocate_section elf32_arm_relocate_section
10199 #define elf_backend_write_section elf32_arm_write_section
10200 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
10201 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
10202 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
10203 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
10204 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
10205 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
10206 #define elf_backend_post_process_headers elf32_arm_post_process_headers
10207 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
10208 #define elf_backend_object_p elf32_arm_object_p
10209 #define elf_backend_section_flags elf32_arm_section_flags
10210 #define elf_backend_fake_sections elf32_arm_fake_sections
10211 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
10212 #define elf_backend_final_write_processing elf32_arm_final_write_processing
10213 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
10214 #define elf_backend_symbol_processing elf32_arm_symbol_processing
10215 #define elf_backend_size_info elf32_arm_size_info
10216 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
10217 #define elf_backend_additional_program_headers \
10218 elf32_arm_additional_program_headers
10219 #define elf_backend_output_arch_local_syms \
10220 elf32_arm_output_arch_local_syms
10221 #define elf_backend_begin_write_processing \
10222 elf32_arm_begin_write_processing
10223 #define elf_backend_is_function_type elf32_arm_is_function_type
10225 #define elf_backend_can_refcount 1
10226 #define elf_backend_can_gc_sections 1
10227 #define elf_backend_plt_readonly 1
10228 #define elf_backend_want_got_plt 1
10229 #define elf_backend_want_plt_sym 0
10230 #define elf_backend_may_use_rel_p 1
10231 #define elf_backend_may_use_rela_p 0
10232 #define elf_backend_default_use_rela_p 0
10234 #define elf_backend_got_header_size 12
10236 #undef elf_backend_obj_attrs_vendor
10237 #define elf_backend_obj_attrs_vendor "aeabi"
10238 #undef elf_backend_obj_attrs_section
10239 #define elf_backend_obj_attrs_section ".ARM.attributes"
10240 #undef elf_backend_obj_attrs_arg_type
10241 #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
10242 #undef elf_backend_obj_attrs_section_type
10243 #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
10245 #include "elf32-target.h"
10247 /* VxWorks Targets */
10249 #undef TARGET_LITTLE_SYM
10250 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
10251 #undef TARGET_LITTLE_NAME
10252 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
10253 #undef TARGET_BIG_SYM
10254 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
10255 #undef TARGET_BIG_NAME
10256 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
10258 /* Like elf32_arm_link_hash_table_create -- but overrides
10259 appropriately for VxWorks. */
10260 static struct bfd_link_hash_table *
10261 elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
10263 struct bfd_link_hash_table *ret;
10265 ret = elf32_arm_link_hash_table_create (abfd);
10268 struct elf32_arm_link_hash_table *htab
10269 = (struct elf32_arm_link_hash_table *) ret;
10271 htab->vxworks_p = 1;
10277 elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10279 elf32_arm_final_write_processing (abfd, linker);
10280 elf_vxworks_final_write_processing (abfd, linker);
10284 #define elf32_bed elf32_arm_vxworks_bed
10286 #undef bfd_elf32_bfd_link_hash_table_create
10287 #define bfd_elf32_bfd_link_hash_table_create \
10288 elf32_arm_vxworks_link_hash_table_create
10289 #undef elf_backend_add_symbol_hook
10290 #define elf_backend_add_symbol_hook \
10291 elf_vxworks_add_symbol_hook
10292 #undef elf_backend_final_write_processing
10293 #define elf_backend_final_write_processing \
10294 elf32_arm_vxworks_final_write_processing
10295 #undef elf_backend_emit_relocs
10296 #define elf_backend_emit_relocs \
10297 elf_vxworks_emit_relocs
10299 #undef elf_backend_may_use_rel_p
10300 #define elf_backend_may_use_rel_p 0
10301 #undef elf_backend_may_use_rela_p
10302 #define elf_backend_may_use_rela_p 1
10303 #undef elf_backend_default_use_rela_p
10304 #define elf_backend_default_use_rela_p 1
10305 #undef elf_backend_want_plt_sym
10306 #define elf_backend_want_plt_sym 1
10307 #undef ELF_MAXPAGESIZE
10308 #define ELF_MAXPAGESIZE 0x1000
10310 #include "elf32-target.h"
10313 /* Symbian OS Targets */
10315 #undef TARGET_LITTLE_SYM
10316 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
10317 #undef TARGET_LITTLE_NAME
10318 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
10319 #undef TARGET_BIG_SYM
10320 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
10321 #undef TARGET_BIG_NAME
10322 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
10324 /* Like elf32_arm_link_hash_table_create -- but overrides
10325 appropriately for Symbian OS. */
10326 static struct bfd_link_hash_table *
10327 elf32_arm_symbian_link_hash_table_create (bfd *abfd)
10329 struct bfd_link_hash_table *ret;
10331 ret = elf32_arm_link_hash_table_create (abfd);
10334 struct elf32_arm_link_hash_table *htab
10335 = (struct elf32_arm_link_hash_table *)ret;
10336 /* There is no PLT header for Symbian OS. */
10337 htab->plt_header_size = 0;
10338 /* The PLT entries are each three instructions. */
10339 htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry);
10340 htab->symbian_p = 1;
10341 /* Symbian uses armv5t or above, so use_blx is always true. */
10343 htab->root.is_relocatable_executable = 1;
10348 static const struct bfd_elf_special_section
10349 elf32_arm_symbian_special_sections[] =
10351 /* In a BPABI executable, the dynamic linking sections do not go in
10352 the loadable read-only segment. The post-linker may wish to
10353 refer to these sections, but they are not part of the final
10355 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 },
10356 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 },
10357 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 },
10358 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 },
10359 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 },
10360 /* These sections do not need to be writable as the SymbianOS
10361 postlinker will arrange things so that no dynamic relocation is
10363 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC },
10364 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC },
10365 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
10366 { NULL, 0, 0, 0, 0 }
10370 elf32_arm_symbian_begin_write_processing (bfd *abfd,
10371 struct bfd_link_info *link_info)
10373 /* BPABI objects are never loaded directly by an OS kernel; they are
10374 processed by a postlinker first, into an OS-specific format. If
10375 the D_PAGED bit is set on the file, BFD will align segments on
10376 page boundaries, so that an OS can directly map the file. With
10377 BPABI objects, that just results in wasted space. In addition,
10378 because we clear the D_PAGED bit, map_sections_to_segments will
10379 recognize that the program headers should not be mapped into any
10380 loadable segment. */
10381 abfd->flags &= ~D_PAGED;
10382 elf32_arm_begin_write_processing(abfd, link_info);
10386 elf32_arm_symbian_modify_segment_map (bfd *abfd,
10387 struct bfd_link_info *info)
10389 struct elf_segment_map *m;
10392 /* BPABI shared libraries and executables should have a PT_DYNAMIC
10393 segment. However, because the .dynamic section is not marked
10394 with SEC_LOAD, the generic ELF code will not create such a
10396 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
10399 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
10400 if (m->p_type == PT_DYNAMIC)
10405 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
10406 m->next = elf_tdata (abfd)->segment_map;
10407 elf_tdata (abfd)->segment_map = m;
10411 /* Also call the generic arm routine. */
10412 return elf32_arm_modify_segment_map (abfd, info);
10416 #define elf32_bed elf32_arm_symbian_bed
10418 /* The dynamic sections are not allocated on SymbianOS; the postlinker
10419 will process them and then discard them. */
10420 #undef ELF_DYNAMIC_SEC_FLAGS
10421 #define ELF_DYNAMIC_SEC_FLAGS \
10422 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
10424 #undef bfd_elf32_bfd_link_hash_table_create
10425 #define bfd_elf32_bfd_link_hash_table_create \
10426 elf32_arm_symbian_link_hash_table_create
10427 #undef elf_backend_add_symbol_hook
10429 #undef elf_backend_special_sections
10430 #define elf_backend_special_sections elf32_arm_symbian_special_sections
10432 #undef elf_backend_begin_write_processing
10433 #define elf_backend_begin_write_processing \
10434 elf32_arm_symbian_begin_write_processing
10435 #undef elf_backend_final_write_processing
10436 #define elf_backend_final_write_processing \
10437 elf32_arm_final_write_processing
10438 #undef elf_backend_emit_relocs
10440 #undef elf_backend_modify_segment_map
10441 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
10443 /* There is no .got section for BPABI objects, and hence no header. */
10444 #undef elf_backend_got_header_size
10445 #define elf_backend_got_header_size 0
10447 /* Similarly, there is no .got.plt section. */
10448 #undef elf_backend_want_got_plt
10449 #define elf_backend_want_got_plt 0
10451 #undef elf_backend_may_use_rel_p
10452 #define elf_backend_may_use_rel_p 1
10453 #undef elf_backend_may_use_rela_p
10454 #define elf_backend_may_use_rela_p 0
10455 #undef elf_backend_default_use_rela_p
10456 #define elf_backend_default_use_rela_p 0
10457 #undef elf_backend_want_plt_sym
10458 #define elf_backend_want_plt_sym 0
10459 #undef ELF_MAXPAGESIZE
10460 #define ELF_MAXPAGESIZE 0x8000
10462 #include "elf32-target.h"
projects / external / binutils.git / blob