1 /* 32-bit ELF support for ARM
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
3 2008 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
24 #include "libiberty.h"
27 #include "elf-vxworks.h"
30 /* Return the relocation section associated with NAME. HTAB is the
31 bfd's elf32_arm_link_hash_entry. */
32 #define RELOC_SECTION(HTAB, NAME) \
33 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
35 /* Return size of a relocation entry. HTAB is the bfd's
36 elf32_arm_link_hash_entry. */
37 #define RELOC_SIZE(HTAB) \
39 ? sizeof (Elf32_External_Rel) \
40 : sizeof (Elf32_External_Rela))
42 /* Return function to swap relocations in. HTAB is the bfd's
43 elf32_arm_link_hash_entry. */
44 #define SWAP_RELOC_IN(HTAB) \
46 ? bfd_elf32_swap_reloc_in \
47 : bfd_elf32_swap_reloca_in)
49 /* Return function to swap relocations out. HTAB is the bfd's
50 elf32_arm_link_hash_entry. */
51 #define SWAP_RELOC_OUT(HTAB) \
53 ? bfd_elf32_swap_reloc_out \
54 : bfd_elf32_swap_reloca_out)
56 #define elf_info_to_howto 0
57 #define elf_info_to_howto_rel elf32_arm_info_to_howto
59 #define ARM_ELF_ABI_VERSION 0
60 #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
62 static struct elf_backend_data elf32_arm_vxworks_bed
;
64 /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
65 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
68 static reloc_howto_type elf32_arm_howto_table_1
[] =
71 HOWTO (R_ARM_NONE
, /* type */
73 0, /* size (0 = byte, 1 = short, 2 = long) */
75 FALSE
, /* pc_relative */
77 complain_overflow_dont
,/* complain_on_overflow */
78 bfd_elf_generic_reloc
, /* special_function */
79 "R_ARM_NONE", /* name */
80 FALSE
, /* partial_inplace */
83 FALSE
), /* pcrel_offset */
85 HOWTO (R_ARM_PC24
, /* type */
87 2, /* size (0 = byte, 1 = short, 2 = long) */
89 TRUE
, /* pc_relative */
91 complain_overflow_signed
,/* complain_on_overflow */
92 bfd_elf_generic_reloc
, /* special_function */
93 "R_ARM_PC24", /* name */
94 FALSE
, /* partial_inplace */
95 0x00ffffff, /* src_mask */
96 0x00ffffff, /* dst_mask */
97 TRUE
), /* pcrel_offset */
100 HOWTO (R_ARM_ABS32
, /* type */
102 2, /* size (0 = byte, 1 = short, 2 = long) */
104 FALSE
, /* pc_relative */
106 complain_overflow_bitfield
,/* complain_on_overflow */
107 bfd_elf_generic_reloc
, /* special_function */
108 "R_ARM_ABS32", /* name */
109 FALSE
, /* partial_inplace */
110 0xffffffff, /* src_mask */
111 0xffffffff, /* dst_mask */
112 FALSE
), /* pcrel_offset */
114 /* standard 32bit pc-relative reloc */
115 HOWTO (R_ARM_REL32
, /* type */
117 2, /* size (0 = byte, 1 = short, 2 = long) */
119 TRUE
, /* pc_relative */
121 complain_overflow_bitfield
,/* complain_on_overflow */
122 bfd_elf_generic_reloc
, /* special_function */
123 "R_ARM_REL32", /* name */
124 FALSE
, /* partial_inplace */
125 0xffffffff, /* src_mask */
126 0xffffffff, /* dst_mask */
127 TRUE
), /* pcrel_offset */
129 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
130 HOWTO (R_ARM_LDR_PC_G0
, /* type */
132 0, /* size (0 = byte, 1 = short, 2 = long) */
134 TRUE
, /* pc_relative */
136 complain_overflow_dont
,/* complain_on_overflow */
137 bfd_elf_generic_reloc
, /* special_function */
138 "R_ARM_LDR_PC_G0", /* name */
139 FALSE
, /* partial_inplace */
140 0xffffffff, /* src_mask */
141 0xffffffff, /* dst_mask */
142 TRUE
), /* pcrel_offset */
144 /* 16 bit absolute */
145 HOWTO (R_ARM_ABS16
, /* type */
147 1, /* size (0 = byte, 1 = short, 2 = long) */
149 FALSE
, /* pc_relative */
151 complain_overflow_bitfield
,/* complain_on_overflow */
152 bfd_elf_generic_reloc
, /* special_function */
153 "R_ARM_ABS16", /* name */
154 FALSE
, /* partial_inplace */
155 0x0000ffff, /* src_mask */
156 0x0000ffff, /* dst_mask */
157 FALSE
), /* pcrel_offset */
159 /* 12 bit absolute */
160 HOWTO (R_ARM_ABS12
, /* type */
162 2, /* size (0 = byte, 1 = short, 2 = long) */
164 FALSE
, /* pc_relative */
166 complain_overflow_bitfield
,/* complain_on_overflow */
167 bfd_elf_generic_reloc
, /* special_function */
168 "R_ARM_ABS12", /* name */
169 FALSE
, /* partial_inplace */
170 0x00000fff, /* src_mask */
171 0x00000fff, /* dst_mask */
172 FALSE
), /* pcrel_offset */
174 HOWTO (R_ARM_THM_ABS5
, /* type */
176 1, /* size (0 = byte, 1 = short, 2 = long) */
178 FALSE
, /* pc_relative */
180 complain_overflow_bitfield
,/* complain_on_overflow */
181 bfd_elf_generic_reloc
, /* special_function */
182 "R_ARM_THM_ABS5", /* name */
183 FALSE
, /* partial_inplace */
184 0x000007e0, /* src_mask */
185 0x000007e0, /* dst_mask */
186 FALSE
), /* pcrel_offset */
189 HOWTO (R_ARM_ABS8
, /* type */
191 0, /* size (0 = byte, 1 = short, 2 = long) */
193 FALSE
, /* pc_relative */
195 complain_overflow_bitfield
,/* complain_on_overflow */
196 bfd_elf_generic_reloc
, /* special_function */
197 "R_ARM_ABS8", /* name */
198 FALSE
, /* partial_inplace */
199 0x000000ff, /* src_mask */
200 0x000000ff, /* dst_mask */
201 FALSE
), /* pcrel_offset */
203 HOWTO (R_ARM_SBREL32
, /* type */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
207 FALSE
, /* pc_relative */
209 complain_overflow_dont
,/* complain_on_overflow */
210 bfd_elf_generic_reloc
, /* special_function */
211 "R_ARM_SBREL32", /* name */
212 FALSE
, /* partial_inplace */
213 0xffffffff, /* src_mask */
214 0xffffffff, /* dst_mask */
215 FALSE
), /* pcrel_offset */
217 HOWTO (R_ARM_THM_CALL
, /* type */
219 2, /* size (0 = byte, 1 = short, 2 = long) */
221 TRUE
, /* pc_relative */
223 complain_overflow_signed
,/* complain_on_overflow */
224 bfd_elf_generic_reloc
, /* special_function */
225 "R_ARM_THM_CALL", /* name */
226 FALSE
, /* partial_inplace */
227 0x07ff07ff, /* src_mask */
228 0x07ff07ff, /* dst_mask */
229 TRUE
), /* pcrel_offset */
231 HOWTO (R_ARM_THM_PC8
, /* type */
233 1, /* size (0 = byte, 1 = short, 2 = long) */
235 TRUE
, /* pc_relative */
237 complain_overflow_signed
,/* complain_on_overflow */
238 bfd_elf_generic_reloc
, /* special_function */
239 "R_ARM_THM_PC8", /* name */
240 FALSE
, /* partial_inplace */
241 0x000000ff, /* src_mask */
242 0x000000ff, /* dst_mask */
243 TRUE
), /* pcrel_offset */
245 HOWTO (R_ARM_BREL_ADJ
, /* type */
247 1, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE
, /* pc_relative */
251 complain_overflow_signed
,/* complain_on_overflow */
252 bfd_elf_generic_reloc
, /* special_function */
253 "R_ARM_BREL_ADJ", /* name */
254 FALSE
, /* partial_inplace */
255 0xffffffff, /* src_mask */
256 0xffffffff, /* dst_mask */
257 FALSE
), /* pcrel_offset */
259 HOWTO (R_ARM_SWI24
, /* type */
261 0, /* size (0 = byte, 1 = short, 2 = long) */
263 FALSE
, /* pc_relative */
265 complain_overflow_signed
,/* complain_on_overflow */
266 bfd_elf_generic_reloc
, /* special_function */
267 "R_ARM_SWI24", /* name */
268 FALSE
, /* partial_inplace */
269 0x00000000, /* src_mask */
270 0x00000000, /* dst_mask */
271 FALSE
), /* pcrel_offset */
273 HOWTO (R_ARM_THM_SWI8
, /* type */
275 0, /* size (0 = byte, 1 = short, 2 = long) */
277 FALSE
, /* pc_relative */
279 complain_overflow_signed
,/* complain_on_overflow */
280 bfd_elf_generic_reloc
, /* special_function */
281 "R_ARM_SWI8", /* name */
282 FALSE
, /* partial_inplace */
283 0x00000000, /* src_mask */
284 0x00000000, /* dst_mask */
285 FALSE
), /* pcrel_offset */
287 /* BLX instruction for the ARM. */
288 HOWTO (R_ARM_XPC25
, /* type */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
292 TRUE
, /* pc_relative */
294 complain_overflow_signed
,/* complain_on_overflow */
295 bfd_elf_generic_reloc
, /* special_function */
296 "R_ARM_XPC25", /* name */
297 FALSE
, /* partial_inplace */
298 0x00ffffff, /* src_mask */
299 0x00ffffff, /* dst_mask */
300 TRUE
), /* pcrel_offset */
302 /* BLX instruction for the Thumb. */
303 HOWTO (R_ARM_THM_XPC22
, /* type */
305 2, /* size (0 = byte, 1 = short, 2 = long) */
307 TRUE
, /* pc_relative */
309 complain_overflow_signed
,/* complain_on_overflow */
310 bfd_elf_generic_reloc
, /* special_function */
311 "R_ARM_THM_XPC22", /* name */
312 FALSE
, /* partial_inplace */
313 0x07ff07ff, /* src_mask */
314 0x07ff07ff, /* dst_mask */
315 TRUE
), /* pcrel_offset */
317 /* Dynamic TLS relocations. */
319 HOWTO (R_ARM_TLS_DTPMOD32
, /* type */
321 2, /* size (0 = byte, 1 = short, 2 = long) */
323 FALSE
, /* pc_relative */
325 complain_overflow_bitfield
,/* complain_on_overflow */
326 bfd_elf_generic_reloc
, /* special_function */
327 "R_ARM_TLS_DTPMOD32", /* name */
328 TRUE
, /* partial_inplace */
329 0xffffffff, /* src_mask */
330 0xffffffff, /* dst_mask */
331 FALSE
), /* pcrel_offset */
333 HOWTO (R_ARM_TLS_DTPOFF32
, /* type */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
337 FALSE
, /* pc_relative */
339 complain_overflow_bitfield
,/* complain_on_overflow */
340 bfd_elf_generic_reloc
, /* special_function */
341 "R_ARM_TLS_DTPOFF32", /* name */
342 TRUE
, /* partial_inplace */
343 0xffffffff, /* src_mask */
344 0xffffffff, /* dst_mask */
345 FALSE
), /* pcrel_offset */
347 HOWTO (R_ARM_TLS_TPOFF32
, /* type */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
351 FALSE
, /* pc_relative */
353 complain_overflow_bitfield
,/* complain_on_overflow */
354 bfd_elf_generic_reloc
, /* special_function */
355 "R_ARM_TLS_TPOFF32", /* name */
356 TRUE
, /* partial_inplace */
357 0xffffffff, /* src_mask */
358 0xffffffff, /* dst_mask */
359 FALSE
), /* pcrel_offset */
361 /* Relocs used in ARM Linux */
363 HOWTO (R_ARM_COPY
, /* type */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
367 FALSE
, /* pc_relative */
369 complain_overflow_bitfield
,/* complain_on_overflow */
370 bfd_elf_generic_reloc
, /* special_function */
371 "R_ARM_COPY", /* name */
372 TRUE
, /* partial_inplace */
373 0xffffffff, /* src_mask */
374 0xffffffff, /* dst_mask */
375 FALSE
), /* pcrel_offset */
377 HOWTO (R_ARM_GLOB_DAT
, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 FALSE
, /* pc_relative */
383 complain_overflow_bitfield
,/* complain_on_overflow */
384 bfd_elf_generic_reloc
, /* special_function */
385 "R_ARM_GLOB_DAT", /* name */
386 TRUE
, /* partial_inplace */
387 0xffffffff, /* src_mask */
388 0xffffffff, /* dst_mask */
389 FALSE
), /* pcrel_offset */
391 HOWTO (R_ARM_JUMP_SLOT
, /* type */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
395 FALSE
, /* pc_relative */
397 complain_overflow_bitfield
,/* complain_on_overflow */
398 bfd_elf_generic_reloc
, /* special_function */
399 "R_ARM_JUMP_SLOT", /* name */
400 TRUE
, /* partial_inplace */
401 0xffffffff, /* src_mask */
402 0xffffffff, /* dst_mask */
403 FALSE
), /* pcrel_offset */
405 HOWTO (R_ARM_RELATIVE
, /* type */
407 2, /* size (0 = byte, 1 = short, 2 = long) */
409 FALSE
, /* pc_relative */
411 complain_overflow_bitfield
,/* complain_on_overflow */
412 bfd_elf_generic_reloc
, /* special_function */
413 "R_ARM_RELATIVE", /* name */
414 TRUE
, /* partial_inplace */
415 0xffffffff, /* src_mask */
416 0xffffffff, /* dst_mask */
417 FALSE
), /* pcrel_offset */
419 HOWTO (R_ARM_GOTOFF32
, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 FALSE
, /* pc_relative */
425 complain_overflow_bitfield
,/* complain_on_overflow */
426 bfd_elf_generic_reloc
, /* special_function */
427 "R_ARM_GOTOFF32", /* name */
428 TRUE
, /* partial_inplace */
429 0xffffffff, /* src_mask */
430 0xffffffff, /* dst_mask */
431 FALSE
), /* pcrel_offset */
433 HOWTO (R_ARM_GOTPC
, /* type */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
437 TRUE
, /* pc_relative */
439 complain_overflow_bitfield
,/* complain_on_overflow */
440 bfd_elf_generic_reloc
, /* special_function */
441 "R_ARM_GOTPC", /* name */
442 TRUE
, /* partial_inplace */
443 0xffffffff, /* src_mask */
444 0xffffffff, /* dst_mask */
445 TRUE
), /* pcrel_offset */
447 HOWTO (R_ARM_GOT32
, /* type */
449 2, /* size (0 = byte, 1 = short, 2 = long) */
451 FALSE
, /* pc_relative */
453 complain_overflow_bitfield
,/* complain_on_overflow */
454 bfd_elf_generic_reloc
, /* special_function */
455 "R_ARM_GOT32", /* name */
456 TRUE
, /* partial_inplace */
457 0xffffffff, /* src_mask */
458 0xffffffff, /* dst_mask */
459 FALSE
), /* pcrel_offset */
461 HOWTO (R_ARM_PLT32
, /* type */
463 2, /* size (0 = byte, 1 = short, 2 = long) */
465 TRUE
, /* pc_relative */
467 complain_overflow_bitfield
,/* complain_on_overflow */
468 bfd_elf_generic_reloc
, /* special_function */
469 "R_ARM_PLT32", /* name */
470 FALSE
, /* partial_inplace */
471 0x00ffffff, /* src_mask */
472 0x00ffffff, /* dst_mask */
473 TRUE
), /* pcrel_offset */
475 HOWTO (R_ARM_CALL
, /* type */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
479 TRUE
, /* pc_relative */
481 complain_overflow_signed
,/* complain_on_overflow */
482 bfd_elf_generic_reloc
, /* special_function */
483 "R_ARM_CALL", /* name */
484 FALSE
, /* partial_inplace */
485 0x00ffffff, /* src_mask */
486 0x00ffffff, /* dst_mask */
487 TRUE
), /* pcrel_offset */
489 HOWTO (R_ARM_JUMP24
, /* type */
491 2, /* size (0 = byte, 1 = short, 2 = long) */
493 TRUE
, /* pc_relative */
495 complain_overflow_signed
,/* complain_on_overflow */
496 bfd_elf_generic_reloc
, /* special_function */
497 "R_ARM_JUMP24", /* name */
498 FALSE
, /* partial_inplace */
499 0x00ffffff, /* src_mask */
500 0x00ffffff, /* dst_mask */
501 TRUE
), /* pcrel_offset */
503 HOWTO (R_ARM_THM_JUMP24
, /* type */
505 2, /* size (0 = byte, 1 = short, 2 = long) */
507 TRUE
, /* pc_relative */
509 complain_overflow_signed
,/* complain_on_overflow */
510 bfd_elf_generic_reloc
, /* special_function */
511 "R_ARM_THM_JUMP24", /* name */
512 FALSE
, /* partial_inplace */
513 0x07ff2fff, /* src_mask */
514 0x07ff2fff, /* dst_mask */
515 TRUE
), /* pcrel_offset */
517 HOWTO (R_ARM_BASE_ABS
, /* type */
519 2, /* size (0 = byte, 1 = short, 2 = long) */
521 FALSE
, /* pc_relative */
523 complain_overflow_dont
,/* complain_on_overflow */
524 bfd_elf_generic_reloc
, /* special_function */
525 "R_ARM_BASE_ABS", /* name */
526 FALSE
, /* partial_inplace */
527 0xffffffff, /* src_mask */
528 0xffffffff, /* dst_mask */
529 FALSE
), /* pcrel_offset */
531 HOWTO (R_ARM_ALU_PCREL7_0
, /* type */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
535 TRUE
, /* pc_relative */
537 complain_overflow_dont
,/* complain_on_overflow */
538 bfd_elf_generic_reloc
, /* special_function */
539 "R_ARM_ALU_PCREL_7_0", /* name */
540 FALSE
, /* partial_inplace */
541 0x00000fff, /* src_mask */
542 0x00000fff, /* dst_mask */
543 TRUE
), /* pcrel_offset */
545 HOWTO (R_ARM_ALU_PCREL15_8
, /* type */
547 2, /* size (0 = byte, 1 = short, 2 = long) */
549 TRUE
, /* pc_relative */
551 complain_overflow_dont
,/* complain_on_overflow */
552 bfd_elf_generic_reloc
, /* special_function */
553 "R_ARM_ALU_PCREL_15_8",/* name */
554 FALSE
, /* partial_inplace */
555 0x00000fff, /* src_mask */
556 0x00000fff, /* dst_mask */
557 TRUE
), /* pcrel_offset */
559 HOWTO (R_ARM_ALU_PCREL23_15
, /* type */
561 2, /* size (0 = byte, 1 = short, 2 = long) */
563 TRUE
, /* pc_relative */
565 complain_overflow_dont
,/* complain_on_overflow */
566 bfd_elf_generic_reloc
, /* special_function */
567 "R_ARM_ALU_PCREL_23_15",/* name */
568 FALSE
, /* partial_inplace */
569 0x00000fff, /* src_mask */
570 0x00000fff, /* dst_mask */
571 TRUE
), /* pcrel_offset */
573 HOWTO (R_ARM_LDR_SBREL_11_0
, /* type */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE
, /* pc_relative */
579 complain_overflow_dont
,/* complain_on_overflow */
580 bfd_elf_generic_reloc
, /* special_function */
581 "R_ARM_LDR_SBREL_11_0",/* name */
582 FALSE
, /* partial_inplace */
583 0x00000fff, /* src_mask */
584 0x00000fff, /* dst_mask */
585 FALSE
), /* pcrel_offset */
587 HOWTO (R_ARM_ALU_SBREL_19_12
, /* type */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
591 FALSE
, /* pc_relative */
593 complain_overflow_dont
,/* complain_on_overflow */
594 bfd_elf_generic_reloc
, /* special_function */
595 "R_ARM_ALU_SBREL_19_12",/* name */
596 FALSE
, /* partial_inplace */
597 0x000ff000, /* src_mask */
598 0x000ff000, /* dst_mask */
599 FALSE
), /* pcrel_offset */
601 HOWTO (R_ARM_ALU_SBREL_27_20
, /* type */
603 2, /* size (0 = byte, 1 = short, 2 = long) */
605 FALSE
, /* pc_relative */
607 complain_overflow_dont
,/* complain_on_overflow */
608 bfd_elf_generic_reloc
, /* special_function */
609 "R_ARM_ALU_SBREL_27_20",/* name */
610 FALSE
, /* partial_inplace */
611 0x0ff00000, /* src_mask */
612 0x0ff00000, /* dst_mask */
613 FALSE
), /* pcrel_offset */
615 HOWTO (R_ARM_TARGET1
, /* type */
617 2, /* size (0 = byte, 1 = short, 2 = long) */
619 FALSE
, /* pc_relative */
621 complain_overflow_dont
,/* complain_on_overflow */
622 bfd_elf_generic_reloc
, /* special_function */
623 "R_ARM_TARGET1", /* name */
624 FALSE
, /* partial_inplace */
625 0xffffffff, /* src_mask */
626 0xffffffff, /* dst_mask */
627 FALSE
), /* pcrel_offset */
629 HOWTO (R_ARM_ROSEGREL32
, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 FALSE
, /* pc_relative */
635 complain_overflow_dont
,/* complain_on_overflow */
636 bfd_elf_generic_reloc
, /* special_function */
637 "R_ARM_ROSEGREL32", /* name */
638 FALSE
, /* partial_inplace */
639 0xffffffff, /* src_mask */
640 0xffffffff, /* dst_mask */
641 FALSE
), /* pcrel_offset */
643 HOWTO (R_ARM_V4BX
, /* type */
645 2, /* size (0 = byte, 1 = short, 2 = long) */
647 FALSE
, /* pc_relative */
649 complain_overflow_dont
,/* complain_on_overflow */
650 bfd_elf_generic_reloc
, /* special_function */
651 "R_ARM_V4BX", /* name */
652 FALSE
, /* partial_inplace */
653 0xffffffff, /* src_mask */
654 0xffffffff, /* dst_mask */
655 FALSE
), /* pcrel_offset */
657 HOWTO (R_ARM_TARGET2
, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 FALSE
, /* pc_relative */
663 complain_overflow_signed
,/* complain_on_overflow */
664 bfd_elf_generic_reloc
, /* special_function */
665 "R_ARM_TARGET2", /* name */
666 FALSE
, /* partial_inplace */
667 0xffffffff, /* src_mask */
668 0xffffffff, /* dst_mask */
669 TRUE
), /* pcrel_offset */
671 HOWTO (R_ARM_PREL31
, /* type */
673 2, /* size (0 = byte, 1 = short, 2 = long) */
675 TRUE
, /* pc_relative */
677 complain_overflow_signed
,/* complain_on_overflow */
678 bfd_elf_generic_reloc
, /* special_function */
679 "R_ARM_PREL31", /* name */
680 FALSE
, /* partial_inplace */
681 0x7fffffff, /* src_mask */
682 0x7fffffff, /* dst_mask */
683 TRUE
), /* pcrel_offset */
685 HOWTO (R_ARM_MOVW_ABS_NC
, /* type */
687 2, /* size (0 = byte, 1 = short, 2 = long) */
689 FALSE
, /* pc_relative */
691 complain_overflow_dont
,/* complain_on_overflow */
692 bfd_elf_generic_reloc
, /* special_function */
693 "R_ARM_MOVW_ABS_NC", /* name */
694 FALSE
, /* partial_inplace */
695 0x000f0fff, /* src_mask */
696 0x000f0fff, /* dst_mask */
697 FALSE
), /* pcrel_offset */
699 HOWTO (R_ARM_MOVT_ABS
, /* type */
701 2, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE
, /* pc_relative */
705 complain_overflow_bitfield
,/* complain_on_overflow */
706 bfd_elf_generic_reloc
, /* special_function */
707 "R_ARM_MOVT_ABS", /* name */
708 FALSE
, /* partial_inplace */
709 0x000f0fff, /* src_mask */
710 0x000f0fff, /* dst_mask */
711 FALSE
), /* pcrel_offset */
713 HOWTO (R_ARM_MOVW_PREL_NC
, /* type */
715 2, /* size (0 = byte, 1 = short, 2 = long) */
717 TRUE
, /* pc_relative */
719 complain_overflow_dont
,/* complain_on_overflow */
720 bfd_elf_generic_reloc
, /* special_function */
721 "R_ARM_MOVW_PREL_NC", /* name */
722 FALSE
, /* partial_inplace */
723 0x000f0fff, /* src_mask */
724 0x000f0fff, /* dst_mask */
725 TRUE
), /* pcrel_offset */
727 HOWTO (R_ARM_MOVT_PREL
, /* type */
729 2, /* size (0 = byte, 1 = short, 2 = long) */
731 TRUE
, /* pc_relative */
733 complain_overflow_bitfield
,/* complain_on_overflow */
734 bfd_elf_generic_reloc
, /* special_function */
735 "R_ARM_MOVT_PREL", /* name */
736 FALSE
, /* partial_inplace */
737 0x000f0fff, /* src_mask */
738 0x000f0fff, /* dst_mask */
739 TRUE
), /* pcrel_offset */
741 HOWTO (R_ARM_THM_MOVW_ABS_NC
, /* type */
743 2, /* size (0 = byte, 1 = short, 2 = long) */
745 FALSE
, /* pc_relative */
747 complain_overflow_dont
,/* complain_on_overflow */
748 bfd_elf_generic_reloc
, /* special_function */
749 "R_ARM_THM_MOVW_ABS_NC",/* name */
750 FALSE
, /* partial_inplace */
751 0x040f70ff, /* src_mask */
752 0x040f70ff, /* dst_mask */
753 FALSE
), /* pcrel_offset */
755 HOWTO (R_ARM_THM_MOVT_ABS
, /* type */
757 2, /* size (0 = byte, 1 = short, 2 = long) */
759 FALSE
, /* pc_relative */
761 complain_overflow_bitfield
,/* complain_on_overflow */
762 bfd_elf_generic_reloc
, /* special_function */
763 "R_ARM_THM_MOVT_ABS", /* name */
764 FALSE
, /* partial_inplace */
765 0x040f70ff, /* src_mask */
766 0x040f70ff, /* dst_mask */
767 FALSE
), /* pcrel_offset */
769 HOWTO (R_ARM_THM_MOVW_PREL_NC
,/* type */
771 2, /* size (0 = byte, 1 = short, 2 = long) */
773 TRUE
, /* pc_relative */
775 complain_overflow_dont
,/* complain_on_overflow */
776 bfd_elf_generic_reloc
, /* special_function */
777 "R_ARM_THM_MOVW_PREL_NC",/* name */
778 FALSE
, /* partial_inplace */
779 0x040f70ff, /* src_mask */
780 0x040f70ff, /* dst_mask */
781 TRUE
), /* pcrel_offset */
783 HOWTO (R_ARM_THM_MOVT_PREL
, /* type */
785 2, /* size (0 = byte, 1 = short, 2 = long) */
787 TRUE
, /* pc_relative */
789 complain_overflow_bitfield
,/* complain_on_overflow */
790 bfd_elf_generic_reloc
, /* special_function */
791 "R_ARM_THM_MOVT_PREL", /* name */
792 FALSE
, /* partial_inplace */
793 0x040f70ff, /* src_mask */
794 0x040f70ff, /* dst_mask */
795 TRUE
), /* pcrel_offset */
797 HOWTO (R_ARM_THM_JUMP19
, /* type */
799 2, /* size (0 = byte, 1 = short, 2 = long) */
801 TRUE
, /* pc_relative */
803 complain_overflow_signed
,/* complain_on_overflow */
804 bfd_elf_generic_reloc
, /* special_function */
805 "R_ARM_THM_JUMP19", /* name */
806 FALSE
, /* partial_inplace */
807 0x043f2fff, /* src_mask */
808 0x043f2fff, /* dst_mask */
809 TRUE
), /* pcrel_offset */
811 HOWTO (R_ARM_THM_JUMP6
, /* type */
813 1, /* size (0 = byte, 1 = short, 2 = long) */
815 TRUE
, /* pc_relative */
817 complain_overflow_unsigned
,/* complain_on_overflow */
818 bfd_elf_generic_reloc
, /* special_function */
819 "R_ARM_THM_JUMP6", /* name */
820 FALSE
, /* partial_inplace */
821 0x02f8, /* src_mask */
822 0x02f8, /* dst_mask */
823 TRUE
), /* pcrel_offset */
825 /* These are declared as 13-bit signed relocations because we can
826 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
828 HOWTO (R_ARM_THM_ALU_PREL_11_0
,/* type */
830 2, /* size (0 = byte, 1 = short, 2 = long) */
832 TRUE
, /* pc_relative */
834 complain_overflow_dont
,/* complain_on_overflow */
835 bfd_elf_generic_reloc
, /* special_function */
836 "R_ARM_THM_ALU_PREL_11_0",/* name */
837 FALSE
, /* partial_inplace */
838 0xffffffff, /* src_mask */
839 0xffffffff, /* dst_mask */
840 TRUE
), /* pcrel_offset */
842 HOWTO (R_ARM_THM_PC12
, /* type */
844 2, /* size (0 = byte, 1 = short, 2 = long) */
846 TRUE
, /* pc_relative */
848 complain_overflow_dont
,/* complain_on_overflow */
849 bfd_elf_generic_reloc
, /* special_function */
850 "R_ARM_THM_PC12", /* name */
851 FALSE
, /* partial_inplace */
852 0xffffffff, /* src_mask */
853 0xffffffff, /* dst_mask */
854 TRUE
), /* pcrel_offset */
856 HOWTO (R_ARM_ABS32_NOI
, /* type */
858 2, /* size (0 = byte, 1 = short, 2 = long) */
860 FALSE
, /* pc_relative */
862 complain_overflow_dont
,/* complain_on_overflow */
863 bfd_elf_generic_reloc
, /* special_function */
864 "R_ARM_ABS32_NOI", /* name */
865 FALSE
, /* partial_inplace */
866 0xffffffff, /* src_mask */
867 0xffffffff, /* dst_mask */
868 FALSE
), /* pcrel_offset */
870 HOWTO (R_ARM_REL32_NOI
, /* type */
872 2, /* size (0 = byte, 1 = short, 2 = long) */
874 TRUE
, /* pc_relative */
876 complain_overflow_dont
,/* complain_on_overflow */
877 bfd_elf_generic_reloc
, /* special_function */
878 "R_ARM_REL32_NOI", /* name */
879 FALSE
, /* partial_inplace */
880 0xffffffff, /* src_mask */
881 0xffffffff, /* dst_mask */
882 FALSE
), /* pcrel_offset */
884 /* Group relocations. */
886 HOWTO (R_ARM_ALU_PC_G0_NC
, /* type */
888 2, /* size (0 = byte, 1 = short, 2 = long) */
890 TRUE
, /* pc_relative */
892 complain_overflow_dont
,/* complain_on_overflow */
893 bfd_elf_generic_reloc
, /* special_function */
894 "R_ARM_ALU_PC_G0_NC", /* name */
895 FALSE
, /* partial_inplace */
896 0xffffffff, /* src_mask */
897 0xffffffff, /* dst_mask */
898 TRUE
), /* pcrel_offset */
900 HOWTO (R_ARM_ALU_PC_G0
, /* type */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
904 TRUE
, /* pc_relative */
906 complain_overflow_dont
,/* complain_on_overflow */
907 bfd_elf_generic_reloc
, /* special_function */
908 "R_ARM_ALU_PC_G0", /* name */
909 FALSE
, /* partial_inplace */
910 0xffffffff, /* src_mask */
911 0xffffffff, /* dst_mask */
912 TRUE
), /* pcrel_offset */
914 HOWTO (R_ARM_ALU_PC_G1_NC
, /* type */
916 2, /* size (0 = byte, 1 = short, 2 = long) */
918 TRUE
, /* pc_relative */
920 complain_overflow_dont
,/* complain_on_overflow */
921 bfd_elf_generic_reloc
, /* special_function */
922 "R_ARM_ALU_PC_G1_NC", /* name */
923 FALSE
, /* partial_inplace */
924 0xffffffff, /* src_mask */
925 0xffffffff, /* dst_mask */
926 TRUE
), /* pcrel_offset */
928 HOWTO (R_ARM_ALU_PC_G1
, /* type */
930 2, /* size (0 = byte, 1 = short, 2 = long) */
932 TRUE
, /* pc_relative */
934 complain_overflow_dont
,/* complain_on_overflow */
935 bfd_elf_generic_reloc
, /* special_function */
936 "R_ARM_ALU_PC_G1", /* name */
937 FALSE
, /* partial_inplace */
938 0xffffffff, /* src_mask */
939 0xffffffff, /* dst_mask */
940 TRUE
), /* pcrel_offset */
942 HOWTO (R_ARM_ALU_PC_G2
, /* type */
944 2, /* size (0 = byte, 1 = short, 2 = long) */
946 TRUE
, /* pc_relative */
948 complain_overflow_dont
,/* complain_on_overflow */
949 bfd_elf_generic_reloc
, /* special_function */
950 "R_ARM_ALU_PC_G2", /* name */
951 FALSE
, /* partial_inplace */
952 0xffffffff, /* src_mask */
953 0xffffffff, /* dst_mask */
954 TRUE
), /* pcrel_offset */
956 HOWTO (R_ARM_LDR_PC_G1
, /* type */
958 2, /* size (0 = byte, 1 = short, 2 = long) */
960 TRUE
, /* pc_relative */
962 complain_overflow_dont
,/* complain_on_overflow */
963 bfd_elf_generic_reloc
, /* special_function */
964 "R_ARM_LDR_PC_G1", /* name */
965 FALSE
, /* partial_inplace */
966 0xffffffff, /* src_mask */
967 0xffffffff, /* dst_mask */
968 TRUE
), /* pcrel_offset */
970 HOWTO (R_ARM_LDR_PC_G2
, /* type */
972 2, /* size (0 = byte, 1 = short, 2 = long) */
974 TRUE
, /* pc_relative */
976 complain_overflow_dont
,/* complain_on_overflow */
977 bfd_elf_generic_reloc
, /* special_function */
978 "R_ARM_LDR_PC_G2", /* name */
979 FALSE
, /* partial_inplace */
980 0xffffffff, /* src_mask */
981 0xffffffff, /* dst_mask */
982 TRUE
), /* pcrel_offset */
984 HOWTO (R_ARM_LDRS_PC_G0
, /* type */
986 2, /* size (0 = byte, 1 = short, 2 = long) */
988 TRUE
, /* pc_relative */
990 complain_overflow_dont
,/* complain_on_overflow */
991 bfd_elf_generic_reloc
, /* special_function */
992 "R_ARM_LDRS_PC_G0", /* name */
993 FALSE
, /* partial_inplace */
994 0xffffffff, /* src_mask */
995 0xffffffff, /* dst_mask */
996 TRUE
), /* pcrel_offset */
998 HOWTO (R_ARM_LDRS_PC_G1
, /* type */
1000 2, /* size (0 = byte, 1 = short, 2 = long) */
1002 TRUE
, /* pc_relative */
1004 complain_overflow_dont
,/* complain_on_overflow */
1005 bfd_elf_generic_reloc
, /* special_function */
1006 "R_ARM_LDRS_PC_G1", /* name */
1007 FALSE
, /* partial_inplace */
1008 0xffffffff, /* src_mask */
1009 0xffffffff, /* dst_mask */
1010 TRUE
), /* pcrel_offset */
1012 HOWTO (R_ARM_LDRS_PC_G2
, /* type */
1014 2, /* size (0 = byte, 1 = short, 2 = long) */
1016 TRUE
, /* pc_relative */
1018 complain_overflow_dont
,/* complain_on_overflow */
1019 bfd_elf_generic_reloc
, /* special_function */
1020 "R_ARM_LDRS_PC_G2", /* name */
1021 FALSE
, /* partial_inplace */
1022 0xffffffff, /* src_mask */
1023 0xffffffff, /* dst_mask */
1024 TRUE
), /* pcrel_offset */
1026 HOWTO (R_ARM_LDC_PC_G0
, /* type */
1028 2, /* size (0 = byte, 1 = short, 2 = long) */
1030 TRUE
, /* pc_relative */
1032 complain_overflow_dont
,/* complain_on_overflow */
1033 bfd_elf_generic_reloc
, /* special_function */
1034 "R_ARM_LDC_PC_G0", /* name */
1035 FALSE
, /* partial_inplace */
1036 0xffffffff, /* src_mask */
1037 0xffffffff, /* dst_mask */
1038 TRUE
), /* pcrel_offset */
1040 HOWTO (R_ARM_LDC_PC_G1
, /* type */
1042 2, /* size (0 = byte, 1 = short, 2 = long) */
1044 TRUE
, /* pc_relative */
1046 complain_overflow_dont
,/* complain_on_overflow */
1047 bfd_elf_generic_reloc
, /* special_function */
1048 "R_ARM_LDC_PC_G1", /* name */
1049 FALSE
, /* partial_inplace */
1050 0xffffffff, /* src_mask */
1051 0xffffffff, /* dst_mask */
1052 TRUE
), /* pcrel_offset */
1054 HOWTO (R_ARM_LDC_PC_G2
, /* type */
1056 2, /* size (0 = byte, 1 = short, 2 = long) */
1058 TRUE
, /* pc_relative */
1060 complain_overflow_dont
,/* complain_on_overflow */
1061 bfd_elf_generic_reloc
, /* special_function */
1062 "R_ARM_LDC_PC_G2", /* name */
1063 FALSE
, /* partial_inplace */
1064 0xffffffff, /* src_mask */
1065 0xffffffff, /* dst_mask */
1066 TRUE
), /* pcrel_offset */
1068 HOWTO (R_ARM_ALU_SB_G0_NC
, /* type */
1070 2, /* size (0 = byte, 1 = short, 2 = long) */
1072 TRUE
, /* pc_relative */
1074 complain_overflow_dont
,/* complain_on_overflow */
1075 bfd_elf_generic_reloc
, /* special_function */
1076 "R_ARM_ALU_SB_G0_NC", /* name */
1077 FALSE
, /* partial_inplace */
1078 0xffffffff, /* src_mask */
1079 0xffffffff, /* dst_mask */
1080 TRUE
), /* pcrel_offset */
1082 HOWTO (R_ARM_ALU_SB_G0
, /* type */
1084 2, /* size (0 = byte, 1 = short, 2 = long) */
1086 TRUE
, /* pc_relative */
1088 complain_overflow_dont
,/* complain_on_overflow */
1089 bfd_elf_generic_reloc
, /* special_function */
1090 "R_ARM_ALU_SB_G0", /* name */
1091 FALSE
, /* partial_inplace */
1092 0xffffffff, /* src_mask */
1093 0xffffffff, /* dst_mask */
1094 TRUE
), /* pcrel_offset */
1096 HOWTO (R_ARM_ALU_SB_G1_NC
, /* type */
1098 2, /* size (0 = byte, 1 = short, 2 = long) */
1100 TRUE
, /* pc_relative */
1102 complain_overflow_dont
,/* complain_on_overflow */
1103 bfd_elf_generic_reloc
, /* special_function */
1104 "R_ARM_ALU_SB_G1_NC", /* name */
1105 FALSE
, /* partial_inplace */
1106 0xffffffff, /* src_mask */
1107 0xffffffff, /* dst_mask */
1108 TRUE
), /* pcrel_offset */
1110 HOWTO (R_ARM_ALU_SB_G1
, /* type */
1112 2, /* size (0 = byte, 1 = short, 2 = long) */
1114 TRUE
, /* pc_relative */
1116 complain_overflow_dont
,/* complain_on_overflow */
1117 bfd_elf_generic_reloc
, /* special_function */
1118 "R_ARM_ALU_SB_G1", /* name */
1119 FALSE
, /* partial_inplace */
1120 0xffffffff, /* src_mask */
1121 0xffffffff, /* dst_mask */
1122 TRUE
), /* pcrel_offset */
1124 HOWTO (R_ARM_ALU_SB_G2
, /* type */
1126 2, /* size (0 = byte, 1 = short, 2 = long) */
1128 TRUE
, /* pc_relative */
1130 complain_overflow_dont
,/* complain_on_overflow */
1131 bfd_elf_generic_reloc
, /* special_function */
1132 "R_ARM_ALU_SB_G2", /* name */
1133 FALSE
, /* partial_inplace */
1134 0xffffffff, /* src_mask */
1135 0xffffffff, /* dst_mask */
1136 TRUE
), /* pcrel_offset */
1138 HOWTO (R_ARM_LDR_SB_G0
, /* type */
1140 2, /* size (0 = byte, 1 = short, 2 = long) */
1142 TRUE
, /* pc_relative */
1144 complain_overflow_dont
,/* complain_on_overflow */
1145 bfd_elf_generic_reloc
, /* special_function */
1146 "R_ARM_LDR_SB_G0", /* name */
1147 FALSE
, /* partial_inplace */
1148 0xffffffff, /* src_mask */
1149 0xffffffff, /* dst_mask */
1150 TRUE
), /* pcrel_offset */
1152 HOWTO (R_ARM_LDR_SB_G1
, /* type */
1154 2, /* size (0 = byte, 1 = short, 2 = long) */
1156 TRUE
, /* pc_relative */
1158 complain_overflow_dont
,/* complain_on_overflow */
1159 bfd_elf_generic_reloc
, /* special_function */
1160 "R_ARM_LDR_SB_G1", /* name */
1161 FALSE
, /* partial_inplace */
1162 0xffffffff, /* src_mask */
1163 0xffffffff, /* dst_mask */
1164 TRUE
), /* pcrel_offset */
1166 HOWTO (R_ARM_LDR_SB_G2
, /* type */
1168 2, /* size (0 = byte, 1 = short, 2 = long) */
1170 TRUE
, /* pc_relative */
1172 complain_overflow_dont
,/* complain_on_overflow */
1173 bfd_elf_generic_reloc
, /* special_function */
1174 "R_ARM_LDR_SB_G2", /* name */
1175 FALSE
, /* partial_inplace */
1176 0xffffffff, /* src_mask */
1177 0xffffffff, /* dst_mask */
1178 TRUE
), /* pcrel_offset */
1180 HOWTO (R_ARM_LDRS_SB_G0
, /* type */
1182 2, /* size (0 = byte, 1 = short, 2 = long) */
1184 TRUE
, /* pc_relative */
1186 complain_overflow_dont
,/* complain_on_overflow */
1187 bfd_elf_generic_reloc
, /* special_function */
1188 "R_ARM_LDRS_SB_G0", /* name */
1189 FALSE
, /* partial_inplace */
1190 0xffffffff, /* src_mask */
1191 0xffffffff, /* dst_mask */
1192 TRUE
), /* pcrel_offset */
1194 HOWTO (R_ARM_LDRS_SB_G1
, /* type */
1196 2, /* size (0 = byte, 1 = short, 2 = long) */
1198 TRUE
, /* pc_relative */
1200 complain_overflow_dont
,/* complain_on_overflow */
1201 bfd_elf_generic_reloc
, /* special_function */
1202 "R_ARM_LDRS_SB_G1", /* name */
1203 FALSE
, /* partial_inplace */
1204 0xffffffff, /* src_mask */
1205 0xffffffff, /* dst_mask */
1206 TRUE
), /* pcrel_offset */
1208 HOWTO (R_ARM_LDRS_SB_G2
, /* type */
1210 2, /* size (0 = byte, 1 = short, 2 = long) */
1212 TRUE
, /* pc_relative */
1214 complain_overflow_dont
,/* complain_on_overflow */
1215 bfd_elf_generic_reloc
, /* special_function */
1216 "R_ARM_LDRS_SB_G2", /* name */
1217 FALSE
, /* partial_inplace */
1218 0xffffffff, /* src_mask */
1219 0xffffffff, /* dst_mask */
1220 TRUE
), /* pcrel_offset */
1222 HOWTO (R_ARM_LDC_SB_G0
, /* type */
1224 2, /* size (0 = byte, 1 = short, 2 = long) */
1226 TRUE
, /* pc_relative */
1228 complain_overflow_dont
,/* complain_on_overflow */
1229 bfd_elf_generic_reloc
, /* special_function */
1230 "R_ARM_LDC_SB_G0", /* name */
1231 FALSE
, /* partial_inplace */
1232 0xffffffff, /* src_mask */
1233 0xffffffff, /* dst_mask */
1234 TRUE
), /* pcrel_offset */
1236 HOWTO (R_ARM_LDC_SB_G1
, /* type */
1238 2, /* size (0 = byte, 1 = short, 2 = long) */
1240 TRUE
, /* pc_relative */
1242 complain_overflow_dont
,/* complain_on_overflow */
1243 bfd_elf_generic_reloc
, /* special_function */
1244 "R_ARM_LDC_SB_G1", /* name */
1245 FALSE
, /* partial_inplace */
1246 0xffffffff, /* src_mask */
1247 0xffffffff, /* dst_mask */
1248 TRUE
), /* pcrel_offset */
1250 HOWTO (R_ARM_LDC_SB_G2
, /* type */
1252 2, /* size (0 = byte, 1 = short, 2 = long) */
1254 TRUE
, /* pc_relative */
1256 complain_overflow_dont
,/* complain_on_overflow */
1257 bfd_elf_generic_reloc
, /* special_function */
1258 "R_ARM_LDC_SB_G2", /* name */
1259 FALSE
, /* partial_inplace */
1260 0xffffffff, /* src_mask */
1261 0xffffffff, /* dst_mask */
1262 TRUE
), /* pcrel_offset */
1264 /* End of group relocations. */
1266 HOWTO (R_ARM_MOVW_BREL_NC
, /* type */
1268 2, /* size (0 = byte, 1 = short, 2 = long) */
1270 FALSE
, /* pc_relative */
1272 complain_overflow_dont
,/* complain_on_overflow */
1273 bfd_elf_generic_reloc
, /* special_function */
1274 "R_ARM_MOVW_BREL_NC", /* name */
1275 FALSE
, /* partial_inplace */
1276 0x0000ffff, /* src_mask */
1277 0x0000ffff, /* dst_mask */
1278 FALSE
), /* pcrel_offset */
1280 HOWTO (R_ARM_MOVT_BREL
, /* type */
1282 2, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE
, /* pc_relative */
1286 complain_overflow_bitfield
,/* complain_on_overflow */
1287 bfd_elf_generic_reloc
, /* special_function */
1288 "R_ARM_MOVT_BREL", /* name */
1289 FALSE
, /* partial_inplace */
1290 0x0000ffff, /* src_mask */
1291 0x0000ffff, /* dst_mask */
1292 FALSE
), /* pcrel_offset */
1294 HOWTO (R_ARM_MOVW_BREL
, /* type */
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1298 FALSE
, /* pc_relative */
1300 complain_overflow_dont
,/* complain_on_overflow */
1301 bfd_elf_generic_reloc
, /* special_function */
1302 "R_ARM_MOVW_BREL", /* name */
1303 FALSE
, /* partial_inplace */
1304 0x0000ffff, /* src_mask */
1305 0x0000ffff, /* dst_mask */
1306 FALSE
), /* pcrel_offset */
1308 HOWTO (R_ARM_THM_MOVW_BREL_NC
,/* type */
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1312 FALSE
, /* pc_relative */
1314 complain_overflow_dont
,/* complain_on_overflow */
1315 bfd_elf_generic_reloc
, /* special_function */
1316 "R_ARM_THM_MOVW_BREL_NC",/* name */
1317 FALSE
, /* partial_inplace */
1318 0x040f70ff, /* src_mask */
1319 0x040f70ff, /* dst_mask */
1320 FALSE
), /* pcrel_offset */
1322 HOWTO (R_ARM_THM_MOVT_BREL
, /* type */
1324 2, /* size (0 = byte, 1 = short, 2 = long) */
1326 FALSE
, /* pc_relative */
1328 complain_overflow_bitfield
,/* complain_on_overflow */
1329 bfd_elf_generic_reloc
, /* special_function */
1330 "R_ARM_THM_MOVT_BREL", /* name */
1331 FALSE
, /* partial_inplace */
1332 0x040f70ff, /* src_mask */
1333 0x040f70ff, /* dst_mask */
1334 FALSE
), /* pcrel_offset */
1336 HOWTO (R_ARM_THM_MOVW_BREL
, /* type */
1338 2, /* size (0 = byte, 1 = short, 2 = long) */
1340 FALSE
, /* pc_relative */
1342 complain_overflow_dont
,/* complain_on_overflow */
1343 bfd_elf_generic_reloc
, /* special_function */
1344 "R_ARM_THM_MOVW_BREL", /* name */
1345 FALSE
, /* partial_inplace */
1346 0x040f70ff, /* src_mask */
1347 0x040f70ff, /* dst_mask */
1348 FALSE
), /* pcrel_offset */
1350 EMPTY_HOWTO (90), /* unallocated */
1355 HOWTO (R_ARM_PLT32_ABS
, /* type */
1357 2, /* size (0 = byte, 1 = short, 2 = long) */
1359 FALSE
, /* pc_relative */
1361 complain_overflow_dont
,/* complain_on_overflow */
1362 bfd_elf_generic_reloc
, /* special_function */
1363 "R_ARM_PLT32_ABS", /* name */
1364 FALSE
, /* partial_inplace */
1365 0xffffffff, /* src_mask */
1366 0xffffffff, /* dst_mask */
1367 FALSE
), /* pcrel_offset */
1369 HOWTO (R_ARM_GOT_ABS
, /* type */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE
, /* pc_relative */
1375 complain_overflow_dont
,/* complain_on_overflow */
1376 bfd_elf_generic_reloc
, /* special_function */
1377 "R_ARM_GOT_ABS", /* name */
1378 FALSE
, /* partial_inplace */
1379 0xffffffff, /* src_mask */
1380 0xffffffff, /* dst_mask */
1381 FALSE
), /* pcrel_offset */
1383 HOWTO (R_ARM_GOT_PREL
, /* type */
1385 2, /* size (0 = byte, 1 = short, 2 = long) */
1387 TRUE
, /* pc_relative */
1389 complain_overflow_dont
, /* complain_on_overflow */
1390 bfd_elf_generic_reloc
, /* special_function */
1391 "R_ARM_GOT_PREL", /* name */
1392 FALSE
, /* partial_inplace */
1393 0xffffffff, /* src_mask */
1394 0xffffffff, /* dst_mask */
1395 TRUE
), /* pcrel_offset */
1397 HOWTO (R_ARM_GOT_BREL12
, /* type */
1399 2, /* size (0 = byte, 1 = short, 2 = long) */
1401 FALSE
, /* pc_relative */
1403 complain_overflow_bitfield
,/* complain_on_overflow */
1404 bfd_elf_generic_reloc
, /* special_function */
1405 "R_ARM_GOT_BREL12", /* name */
1406 FALSE
, /* partial_inplace */
1407 0x00000fff, /* src_mask */
1408 0x00000fff, /* dst_mask */
1409 FALSE
), /* pcrel_offset */
1411 HOWTO (R_ARM_GOTOFF12
, /* type */
1413 2, /* size (0 = byte, 1 = short, 2 = long) */
1415 FALSE
, /* pc_relative */
1417 complain_overflow_bitfield
,/* complain_on_overflow */
1418 bfd_elf_generic_reloc
, /* special_function */
1419 "R_ARM_GOTOFF12", /* name */
1420 FALSE
, /* partial_inplace */
1421 0x00000fff, /* src_mask */
1422 0x00000fff, /* dst_mask */
1423 FALSE
), /* pcrel_offset */
1425 EMPTY_HOWTO (R_ARM_GOTRELAX
), /* reserved for future GOT-load optimizations */
1427 /* GNU extension to record C++ vtable member usage */
1428 HOWTO (R_ARM_GNU_VTENTRY
, /* type */
1430 2, /* size (0 = byte, 1 = short, 2 = long) */
1432 FALSE
, /* pc_relative */
1434 complain_overflow_dont
, /* complain_on_overflow */
1435 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
1436 "R_ARM_GNU_VTENTRY", /* name */
1437 FALSE
, /* partial_inplace */
1440 FALSE
), /* pcrel_offset */
1442 /* GNU extension to record C++ vtable hierarchy */
1443 HOWTO (R_ARM_GNU_VTINHERIT
, /* type */
1445 2, /* size (0 = byte, 1 = short, 2 = long) */
1447 FALSE
, /* pc_relative */
1449 complain_overflow_dont
, /* complain_on_overflow */
1450 NULL
, /* special_function */
1451 "R_ARM_GNU_VTINHERIT", /* name */
1452 FALSE
, /* partial_inplace */
1455 FALSE
), /* pcrel_offset */
1457 HOWTO (R_ARM_THM_JUMP11
, /* type */
1459 1, /* size (0 = byte, 1 = short, 2 = long) */
1461 TRUE
, /* pc_relative */
1463 complain_overflow_signed
, /* complain_on_overflow */
1464 bfd_elf_generic_reloc
, /* special_function */
1465 "R_ARM_THM_JUMP11", /* name */
1466 FALSE
, /* partial_inplace */
1467 0x000007ff, /* src_mask */
1468 0x000007ff, /* dst_mask */
1469 TRUE
), /* pcrel_offset */
1471 HOWTO (R_ARM_THM_JUMP8
, /* type */
1473 1, /* size (0 = byte, 1 = short, 2 = long) */
1475 TRUE
, /* pc_relative */
1477 complain_overflow_signed
, /* complain_on_overflow */
1478 bfd_elf_generic_reloc
, /* special_function */
1479 "R_ARM_THM_JUMP8", /* name */
1480 FALSE
, /* partial_inplace */
1481 0x000000ff, /* src_mask */
1482 0x000000ff, /* dst_mask */
1483 TRUE
), /* pcrel_offset */
1485 /* TLS relocations */
1486 HOWTO (R_ARM_TLS_GD32
, /* type */
1488 2, /* size (0 = byte, 1 = short, 2 = long) */
1490 FALSE
, /* pc_relative */
1492 complain_overflow_bitfield
,/* complain_on_overflow */
1493 NULL
, /* special_function */
1494 "R_ARM_TLS_GD32", /* name */
1495 TRUE
, /* partial_inplace */
1496 0xffffffff, /* src_mask */
1497 0xffffffff, /* dst_mask */
1498 FALSE
), /* pcrel_offset */
1500 HOWTO (R_ARM_TLS_LDM32
, /* type */
1502 2, /* size (0 = byte, 1 = short, 2 = long) */
1504 FALSE
, /* pc_relative */
1506 complain_overflow_bitfield
,/* complain_on_overflow */
1507 bfd_elf_generic_reloc
, /* special_function */
1508 "R_ARM_TLS_LDM32", /* name */
1509 TRUE
, /* partial_inplace */
1510 0xffffffff, /* src_mask */
1511 0xffffffff, /* dst_mask */
1512 FALSE
), /* pcrel_offset */
1514 HOWTO (R_ARM_TLS_LDO32
, /* type */
1516 2, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE
, /* pc_relative */
1520 complain_overflow_bitfield
,/* complain_on_overflow */
1521 bfd_elf_generic_reloc
, /* special_function */
1522 "R_ARM_TLS_LDO32", /* name */
1523 TRUE
, /* partial_inplace */
1524 0xffffffff, /* src_mask */
1525 0xffffffff, /* dst_mask */
1526 FALSE
), /* pcrel_offset */
1528 HOWTO (R_ARM_TLS_IE32
, /* type */
1530 2, /* size (0 = byte, 1 = short, 2 = long) */
1532 FALSE
, /* pc_relative */
1534 complain_overflow_bitfield
,/* complain_on_overflow */
1535 NULL
, /* special_function */
1536 "R_ARM_TLS_IE32", /* name */
1537 TRUE
, /* partial_inplace */
1538 0xffffffff, /* src_mask */
1539 0xffffffff, /* dst_mask */
1540 FALSE
), /* pcrel_offset */
1542 HOWTO (R_ARM_TLS_LE32
, /* type */
1544 2, /* size (0 = byte, 1 = short, 2 = long) */
1546 FALSE
, /* pc_relative */
1548 complain_overflow_bitfield
,/* complain_on_overflow */
1549 bfd_elf_generic_reloc
, /* special_function */
1550 "R_ARM_TLS_LE32", /* name */
1551 TRUE
, /* partial_inplace */
1552 0xffffffff, /* src_mask */
1553 0xffffffff, /* dst_mask */
1554 FALSE
), /* pcrel_offset */
1556 HOWTO (R_ARM_TLS_LDO12
, /* type */
1558 2, /* size (0 = byte, 1 = short, 2 = long) */
1560 FALSE
, /* pc_relative */
1562 complain_overflow_bitfield
,/* complain_on_overflow */
1563 bfd_elf_generic_reloc
, /* special_function */
1564 "R_ARM_TLS_LDO12", /* name */
1565 FALSE
, /* partial_inplace */
1566 0x00000fff, /* src_mask */
1567 0x00000fff, /* dst_mask */
1568 FALSE
), /* pcrel_offset */
1570 HOWTO (R_ARM_TLS_LE12
, /* type */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1574 FALSE
, /* pc_relative */
1576 complain_overflow_bitfield
,/* complain_on_overflow */
1577 bfd_elf_generic_reloc
, /* special_function */
1578 "R_ARM_TLS_LE12", /* name */
1579 FALSE
, /* partial_inplace */
1580 0x00000fff, /* src_mask */
1581 0x00000fff, /* dst_mask */
1582 FALSE
), /* pcrel_offset */
1584 HOWTO (R_ARM_TLS_IE12GP
, /* type */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 FALSE
, /* pc_relative */
1590 complain_overflow_bitfield
,/* complain_on_overflow */
1591 bfd_elf_generic_reloc
, /* special_function */
1592 "R_ARM_TLS_IE12GP", /* name */
1593 FALSE
, /* partial_inplace */
1594 0x00000fff, /* src_mask */
1595 0x00000fff, /* dst_mask */
1596 FALSE
), /* pcrel_offset */
1599 /* 112-127 private relocations
1600 128 R_ARM_ME_TOO, obsolete
1601 129-255 unallocated in AAELF.
1603 249-255 extended, currently unused, relocations: */
1605 static reloc_howto_type elf32_arm_howto_table_2
[4] =
1607 HOWTO (R_ARM_RREL32
, /* type */
1609 0, /* size (0 = byte, 1 = short, 2 = long) */
1611 FALSE
, /* pc_relative */
1613 complain_overflow_dont
,/* complain_on_overflow */
1614 bfd_elf_generic_reloc
, /* special_function */
1615 "R_ARM_RREL32", /* name */
1616 FALSE
, /* partial_inplace */
1619 FALSE
), /* pcrel_offset */
1621 HOWTO (R_ARM_RABS32
, /* type */
1623 0, /* size (0 = byte, 1 = short, 2 = long) */
1625 FALSE
, /* pc_relative */
1627 complain_overflow_dont
,/* complain_on_overflow */
1628 bfd_elf_generic_reloc
, /* special_function */
1629 "R_ARM_RABS32", /* name */
1630 FALSE
, /* partial_inplace */
1633 FALSE
), /* pcrel_offset */
1635 HOWTO (R_ARM_RPC24
, /* type */
1637 0, /* size (0 = byte, 1 = short, 2 = long) */
1639 FALSE
, /* pc_relative */
1641 complain_overflow_dont
,/* complain_on_overflow */
1642 bfd_elf_generic_reloc
, /* special_function */
1643 "R_ARM_RPC24", /* name */
1644 FALSE
, /* partial_inplace */
1647 FALSE
), /* pcrel_offset */
1649 HOWTO (R_ARM_RBASE
, /* type */
1651 0, /* size (0 = byte, 1 = short, 2 = long) */
1653 FALSE
, /* pc_relative */
1655 complain_overflow_dont
,/* complain_on_overflow */
1656 bfd_elf_generic_reloc
, /* special_function */
1657 "R_ARM_RBASE", /* name */
1658 FALSE
, /* partial_inplace */
1661 FALSE
) /* pcrel_offset */
1664 static reloc_howto_type
*
1665 elf32_arm_howto_from_type (unsigned int r_type
)
1667 if (r_type
< ARRAY_SIZE (elf32_arm_howto_table_1
))
1668 return &elf32_arm_howto_table_1
[r_type
];
1670 if (r_type
>= R_ARM_RREL32
1671 && r_type
< R_ARM_RREL32
+ ARRAY_SIZE (elf32_arm_howto_table_2
))
1672 return &elf32_arm_howto_table_2
[r_type
- R_ARM_RREL32
];
1678 elf32_arm_info_to_howto (bfd
* abfd ATTRIBUTE_UNUSED
, arelent
* bfd_reloc
,
1679 Elf_Internal_Rela
* elf_reloc
)
1681 unsigned int r_type
;
1683 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1684 bfd_reloc
->howto
= elf32_arm_howto_from_type (r_type
);
1687 struct elf32_arm_reloc_map
1689 bfd_reloc_code_real_type bfd_reloc_val
;
1690 unsigned char elf_reloc_val
;
1693 /* All entries in this list must also be present in elf32_arm_howto_table. */
1694 static const struct elf32_arm_reloc_map elf32_arm_reloc_map
[] =
1696 {BFD_RELOC_NONE
, R_ARM_NONE
},
1697 {BFD_RELOC_ARM_PCREL_BRANCH
, R_ARM_PC24
},
1698 {BFD_RELOC_ARM_PCREL_CALL
, R_ARM_CALL
},
1699 {BFD_RELOC_ARM_PCREL_JUMP
, R_ARM_JUMP24
},
1700 {BFD_RELOC_ARM_PCREL_BLX
, R_ARM_XPC25
},
1701 {BFD_RELOC_THUMB_PCREL_BLX
, R_ARM_THM_XPC22
},
1702 {BFD_RELOC_32
, R_ARM_ABS32
},
1703 {BFD_RELOC_32_PCREL
, R_ARM_REL32
},
1704 {BFD_RELOC_8
, R_ARM_ABS8
},
1705 {BFD_RELOC_16
, R_ARM_ABS16
},
1706 {BFD_RELOC_ARM_OFFSET_IMM
, R_ARM_ABS12
},
1707 {BFD_RELOC_ARM_THUMB_OFFSET
, R_ARM_THM_ABS5
},
1708 {BFD_RELOC_THUMB_PCREL_BRANCH25
, R_ARM_THM_JUMP24
},
1709 {BFD_RELOC_THUMB_PCREL_BRANCH23
, R_ARM_THM_CALL
},
1710 {BFD_RELOC_THUMB_PCREL_BRANCH12
, R_ARM_THM_JUMP11
},
1711 {BFD_RELOC_THUMB_PCREL_BRANCH20
, R_ARM_THM_JUMP19
},
1712 {BFD_RELOC_THUMB_PCREL_BRANCH9
, R_ARM_THM_JUMP8
},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH7
, R_ARM_THM_JUMP6
},
1714 {BFD_RELOC_ARM_GLOB_DAT
, R_ARM_GLOB_DAT
},
1715 {BFD_RELOC_ARM_JUMP_SLOT
, R_ARM_JUMP_SLOT
},
1716 {BFD_RELOC_ARM_RELATIVE
, R_ARM_RELATIVE
},
1717 {BFD_RELOC_ARM_GOTOFF
, R_ARM_GOTOFF32
},
1718 {BFD_RELOC_ARM_GOTPC
, R_ARM_GOTPC
},
1719 {BFD_RELOC_ARM_GOT32
, R_ARM_GOT32
},
1720 {BFD_RELOC_ARM_PLT32
, R_ARM_PLT32
},
1721 {BFD_RELOC_ARM_TARGET1
, R_ARM_TARGET1
},
1722 {BFD_RELOC_ARM_ROSEGREL32
, R_ARM_ROSEGREL32
},
1723 {BFD_RELOC_ARM_SBREL32
, R_ARM_SBREL32
},
1724 {BFD_RELOC_ARM_PREL31
, R_ARM_PREL31
},
1725 {BFD_RELOC_ARM_TARGET2
, R_ARM_TARGET2
},
1726 {BFD_RELOC_ARM_PLT32
, R_ARM_PLT32
},
1727 {BFD_RELOC_ARM_TLS_GD32
, R_ARM_TLS_GD32
},
1728 {BFD_RELOC_ARM_TLS_LDO32
, R_ARM_TLS_LDO32
},
1729 {BFD_RELOC_ARM_TLS_LDM32
, R_ARM_TLS_LDM32
},
1730 {BFD_RELOC_ARM_TLS_DTPMOD32
, R_ARM_TLS_DTPMOD32
},
1731 {BFD_RELOC_ARM_TLS_DTPOFF32
, R_ARM_TLS_DTPOFF32
},
1732 {BFD_RELOC_ARM_TLS_TPOFF32
, R_ARM_TLS_TPOFF32
},
1733 {BFD_RELOC_ARM_TLS_IE32
, R_ARM_TLS_IE32
},
1734 {BFD_RELOC_ARM_TLS_LE32
, R_ARM_TLS_LE32
},
1735 {BFD_RELOC_VTABLE_INHERIT
, R_ARM_GNU_VTINHERIT
},
1736 {BFD_RELOC_VTABLE_ENTRY
, R_ARM_GNU_VTENTRY
},
1737 {BFD_RELOC_ARM_MOVW
, R_ARM_MOVW_ABS_NC
},
1738 {BFD_RELOC_ARM_MOVT
, R_ARM_MOVT_ABS
},
1739 {BFD_RELOC_ARM_MOVW_PCREL
, R_ARM_MOVW_PREL_NC
},
1740 {BFD_RELOC_ARM_MOVT_PCREL
, R_ARM_MOVT_PREL
},
1741 {BFD_RELOC_ARM_THUMB_MOVW
, R_ARM_THM_MOVW_ABS_NC
},
1742 {BFD_RELOC_ARM_THUMB_MOVT
, R_ARM_THM_MOVT_ABS
},
1743 {BFD_RELOC_ARM_THUMB_MOVW_PCREL
, R_ARM_THM_MOVW_PREL_NC
},
1744 {BFD_RELOC_ARM_THUMB_MOVT_PCREL
, R_ARM_THM_MOVT_PREL
},
1745 {BFD_RELOC_ARM_ALU_PC_G0_NC
, R_ARM_ALU_PC_G0_NC
},
1746 {BFD_RELOC_ARM_ALU_PC_G0
, R_ARM_ALU_PC_G0
},
1747 {BFD_RELOC_ARM_ALU_PC_G1_NC
, R_ARM_ALU_PC_G1_NC
},
1748 {BFD_RELOC_ARM_ALU_PC_G1
, R_ARM_ALU_PC_G1
},
1749 {BFD_RELOC_ARM_ALU_PC_G2
, R_ARM_ALU_PC_G2
},
1750 {BFD_RELOC_ARM_LDR_PC_G0
, R_ARM_LDR_PC_G0
},
1751 {BFD_RELOC_ARM_LDR_PC_G1
, R_ARM_LDR_PC_G1
},
1752 {BFD_RELOC_ARM_LDR_PC_G2
, R_ARM_LDR_PC_G2
},
1753 {BFD_RELOC_ARM_LDRS_PC_G0
, R_ARM_LDRS_PC_G0
},
1754 {BFD_RELOC_ARM_LDRS_PC_G1
, R_ARM_LDRS_PC_G1
},
1755 {BFD_RELOC_ARM_LDRS_PC_G2
, R_ARM_LDRS_PC_G2
},
1756 {BFD_RELOC_ARM_LDC_PC_G0
, R_ARM_LDC_PC_G0
},
1757 {BFD_RELOC_ARM_LDC_PC_G1
, R_ARM_LDC_PC_G1
},
1758 {BFD_RELOC_ARM_LDC_PC_G2
, R_ARM_LDC_PC_G2
},
1759 {BFD_RELOC_ARM_ALU_SB_G0_NC
, R_ARM_ALU_SB_G0_NC
},
1760 {BFD_RELOC_ARM_ALU_SB_G0
, R_ARM_ALU_SB_G0
},
1761 {BFD_RELOC_ARM_ALU_SB_G1_NC
, R_ARM_ALU_SB_G1_NC
},
1762 {BFD_RELOC_ARM_ALU_SB_G1
, R_ARM_ALU_SB_G1
},
1763 {BFD_RELOC_ARM_ALU_SB_G2
, R_ARM_ALU_SB_G2
},
1764 {BFD_RELOC_ARM_LDR_SB_G0
, R_ARM_LDR_SB_G0
},
1765 {BFD_RELOC_ARM_LDR_SB_G1
, R_ARM_LDR_SB_G1
},
1766 {BFD_RELOC_ARM_LDR_SB_G2
, R_ARM_LDR_SB_G2
},
1767 {BFD_RELOC_ARM_LDRS_SB_G0
, R_ARM_LDRS_SB_G0
},
1768 {BFD_RELOC_ARM_LDRS_SB_G1
, R_ARM_LDRS_SB_G1
},
1769 {BFD_RELOC_ARM_LDRS_SB_G2
, R_ARM_LDRS_SB_G2
},
1770 {BFD_RELOC_ARM_LDC_SB_G0
, R_ARM_LDC_SB_G0
},
1771 {BFD_RELOC_ARM_LDC_SB_G1
, R_ARM_LDC_SB_G1
},
1772 {BFD_RELOC_ARM_LDC_SB_G2
, R_ARM_LDC_SB_G2
},
1773 {BFD_RELOC_ARM_V4BX
, R_ARM_V4BX
}
1776 static reloc_howto_type
*
1777 elf32_arm_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1778 bfd_reloc_code_real_type code
)
1781 for (i
= 0; i
< ARRAY_SIZE (elf32_arm_reloc_map
); i
++)
1782 if (elf32_arm_reloc_map
[i
].bfd_reloc_val
== code
)
1783 return elf32_arm_howto_from_type (elf32_arm_reloc_map
[i
].elf_reloc_val
);
1788 static reloc_howto_type
*
1789 elf32_arm_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1794 for (i
= 0; i
< ARRAY_SIZE (elf32_arm_howto_table_1
); i
++)
1795 if (elf32_arm_howto_table_1
[i
].name
!= NULL
1796 && strcasecmp (elf32_arm_howto_table_1
[i
].name
, r_name
) == 0)
1797 return &elf32_arm_howto_table_1
[i
];
1799 for (i
= 0; i
< ARRAY_SIZE (elf32_arm_howto_table_2
); i
++)
1800 if (elf32_arm_howto_table_2
[i
].name
!= NULL
1801 && strcasecmp (elf32_arm_howto_table_2
[i
].name
, r_name
) == 0)
1802 return &elf32_arm_howto_table_2
[i
];
1807 /* Support for core dump NOTE sections. */
1810 elf32_arm_nabi_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1815 switch (note
->descsz
)
1820 case 148: /* Linux/ARM 32-bit*/
1822 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1825 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1834 /* Make a ".reg/999" section. */
1835 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1836 size
, note
->descpos
+ offset
);
1840 elf32_arm_nabi_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1842 switch (note
->descsz
)
1847 case 124: /* Linux/ARM elf_prpsinfo */
1848 elf_tdata (abfd
)->core_program
1849 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
1850 elf_tdata (abfd
)->core_command
1851 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
1854 /* Note that for some reason, a spurious space is tacked
1855 onto the end of the args in some (at least one anyway)
1856 implementations, so strip it off if it exists. */
1858 char *command
= elf_tdata (abfd
)->core_command
;
1859 int n
= strlen (command
);
1861 if (0 < n
&& command
[n
- 1] == ' ')
1862 command
[n
- 1] = '\0';
1868 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1869 #define TARGET_LITTLE_NAME "elf32-littlearm"
1870 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1871 #define TARGET_BIG_NAME "elf32-bigarm"
1873 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1874 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1876 typedef unsigned long int insn32
;
1877 typedef unsigned short int insn16
;
1879 /* In lieu of proper flags, assume all EABIv4 or later objects are
1881 #define INTERWORK_FLAG(abfd) \
1882 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1883 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1885 /* The linker script knows the section names for placement.
1886 The entry_names are used to do simple name mangling on the stubs.
1887 Given a function name, and its type, the stub can be found. The
1888 name can be changed. The only requirement is the %s be present. */
1889 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1890 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1892 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1893 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1895 #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1896 #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1898 #define ARM_BX_GLUE_SECTION_NAME ".v4_bx"
1899 #define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d"
1901 /* The name of the dynamic interpreter. This is put in the .interp
1903 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1905 #ifdef FOUR_WORD_PLT
1907 /* The first entry in a procedure linkage table looks like
1908 this. It is set up so that any shared library function that is
1909 called before the relocation has been set up calls the dynamic
1911 static const bfd_vma elf32_arm_plt0_entry
[] =
1913 0xe52de004, /* str lr, [sp, #-4]! */
1914 0xe59fe010, /* ldr lr, [pc, #16] */
1915 0xe08fe00e, /* add lr, pc, lr */
1916 0xe5bef008, /* ldr pc, [lr, #8]! */
1919 /* Subsequent entries in a procedure linkage table look like
1921 static const bfd_vma elf32_arm_plt_entry
[] =
1923 0xe28fc600, /* add ip, pc, #NN */
1924 0xe28cca00, /* add ip, ip, #NN */
1925 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1926 0x00000000, /* unused */
1931 /* The first entry in a procedure linkage table looks like
1932 this. It is set up so that any shared library function that is
1933 called before the relocation has been set up calls the dynamic
1935 static const bfd_vma elf32_arm_plt0_entry
[] =
1937 0xe52de004, /* str lr, [sp, #-4]! */
1938 0xe59fe004, /* ldr lr, [pc, #4] */
1939 0xe08fe00e, /* add lr, pc, lr */
1940 0xe5bef008, /* ldr pc, [lr, #8]! */
1941 0x00000000, /* &GOT[0] - . */
1944 /* Subsequent entries in a procedure linkage table look like
1946 static const bfd_vma elf32_arm_plt_entry
[] =
1948 0xe28fc600, /* add ip, pc, #0xNN00000 */
1949 0xe28cca00, /* add ip, ip, #0xNN000 */
1950 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1955 /* The format of the first entry in the procedure linkage table
1956 for a VxWorks executable. */
1957 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry
[] =
1959 0xe52dc008, /* str ip,[sp,#-8]! */
1960 0xe59fc000, /* ldr ip,[pc] */
1961 0xe59cf008, /* ldr pc,[ip,#8] */
1962 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1965 /* The format of subsequent entries in a VxWorks executable. */
1966 static const bfd_vma elf32_arm_vxworks_exec_plt_entry
[] =
1968 0xe59fc000, /* ldr ip,[pc] */
1969 0xe59cf000, /* ldr pc,[ip] */
1970 0x00000000, /* .long @got */
1971 0xe59fc000, /* ldr ip,[pc] */
1972 0xea000000, /* b _PLT */
1973 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1976 /* The format of entries in a VxWorks shared library. */
1977 static const bfd_vma elf32_arm_vxworks_shared_plt_entry
[] =
1979 0xe59fc000, /* ldr ip,[pc] */
1980 0xe79cf009, /* ldr pc,[ip,r9] */
1981 0x00000000, /* .long @got */
1982 0xe59fc000, /* ldr ip,[pc] */
1983 0xe599f008, /* ldr pc,[r9,#8] */
1984 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1987 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1988 #define PLT_THUMB_STUB_SIZE 4
1989 static const bfd_vma elf32_arm_plt_thumb_stub
[] =
1995 /* The entries in a PLT when using a DLL-based target with multiple
1997 static const bfd_vma elf32_arm_symbian_plt_entry
[] =
1999 0xe51ff004, /* ldr pc, [pc, #-4] */
2000 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2003 #define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8)
2004 #define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8)
2005 #define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4)
2006 #define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4)
2007 #define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4)
2008 #define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4)
2010 static const bfd_vma arm_long_branch_stub
[] =
2012 0xe51ff004, /* ldr pc, [pc, #-4] */
2013 0x00000000, /* dcd R_ARM_ABS32(X) */
2016 static const bfd_vma arm_thumb_v4t_long_branch_stub
[] =
2018 0xe59fc000, /* ldr ip, [pc, #0] */
2019 0xe12fff1c, /* bx ip */
2020 0x00000000, /* dcd R_ARM_ABS32(X) */
2023 static const bfd_vma arm_thumb_thumb_long_branch_stub
[] =
2025 0x4e02b540, /* push {r6, lr} */
2026 /* ldr r6, [pc, #8] */
2027 0xe7fe46fe, /* mov lr, pc */
2029 0xbf00bd40, /* pop {r6, pc} */
2031 0x00000000, /* dcd R_ARM_ABS32(X) */
2034 static const bfd_vma arm_thumb_arm_v4t_long_branch_stub
[] =
2036 0x4e03b540, /* push {r6, lr} */
2037 /* ldr r6, [pc, #12] */
2038 0x473046fe, /* mov lr, pc */
2040 0xe8bd4040, /* pop {r6, pc} */
2041 0xe12fff1e, /* bx lr */
2042 0x00000000, /* dcd R_ARM_ABS32(X) */
2045 static const bfd_vma arm_pic_long_branch_stub
[] =
2047 0xe59fc000, /* ldr r12, [pc] */
2048 0xe08ff00c, /* add pc, pc, ip */
2049 0x00000000, /* dcd R_ARM_ABS32(X) */
2052 /* Section name for stubs is the associated section name plus this
2054 #define STUB_SUFFIX ".stub"
2056 enum elf32_arm_stub_type
2059 arm_stub_long_branch
,
2060 arm_thumb_v4t_stub_long_branch
,
2061 arm_thumb_thumb_stub_long_branch
,
2062 arm_thumb_arm_v4t_stub_long_branch
,
2063 arm_stub_pic_long_branch
,
2066 struct elf32_arm_stub_hash_entry
2068 /* Base hash table entry structure. */
2069 struct bfd_hash_entry root
;
2071 /* The stub section. */
2074 /* Offset within stub_sec of the beginning of this stub. */
2075 bfd_vma stub_offset
;
2077 /* Given the symbol's value and its section we can determine its final
2078 value when building the stubs (so the stub knows where to jump). */
2079 bfd_vma target_value
;
2080 asection
*target_section
;
2082 enum elf32_arm_stub_type stub_type
;
2084 /* The symbol table entry, if any, that this was derived from. */
2085 struct elf32_arm_link_hash_entry
*h
;
2087 /* Destination symbol type (STT_ARM_TFUNC, ...) */
2088 unsigned char st_type
;
2090 /* Where this stub is being called from, or, in the case of combined
2091 stub sections, the first input section in the group. */
2095 /* Used to build a map of a section. This is required for mixed-endian
2098 typedef struct elf32_elf_section_map
2103 elf32_arm_section_map
;
2105 /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2109 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
,
2110 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
,
2111 VFP11_ERRATUM_ARM_VENEER
,
2112 VFP11_ERRATUM_THUMB_VENEER
2114 elf32_vfp11_erratum_type
;
2116 typedef struct elf32_vfp11_erratum_list
2118 struct elf32_vfp11_erratum_list
*next
;
2124 struct elf32_vfp11_erratum_list
*veneer
;
2125 unsigned int vfp_insn
;
2129 struct elf32_vfp11_erratum_list
*branch
;
2133 elf32_vfp11_erratum_type type
;
2135 elf32_vfp11_erratum_list
;
2137 typedef struct _arm_elf_section_data
2139 struct bfd_elf_section_data elf
;
2140 unsigned int mapcount
;
2141 unsigned int mapsize
;
2142 elf32_arm_section_map
*map
;
2143 unsigned int erratumcount
;
2144 elf32_vfp11_erratum_list
*erratumlist
;
2146 _arm_elf_section_data
;
2148 #define elf32_arm_section_data(sec) \
2149 ((_arm_elf_section_data *) elf_section_data (sec))
2151 /* The size of the thread control block. */
2154 struct elf_arm_obj_tdata
2156 struct elf_obj_tdata root
;
2158 /* tls_type for each local got entry. */
2159 char *local_got_tls_type
;
2161 /* Zero to warn when linking objects with incompatible enum sizes. */
2162 int no_enum_size_warning
;
2165 #define elf_arm_tdata(bfd) \
2166 ((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
2168 #define elf32_arm_local_got_tls_type(bfd) \
2169 (elf_arm_tdata (bfd)->local_got_tls_type)
2171 #define is_arm_elf(bfd) \
2172 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2173 && elf_tdata (bfd) != NULL \
2174 && elf_object_id (bfd) == ARM_ELF_TDATA)
2177 elf32_arm_mkobject (bfd
*abfd
)
2179 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_arm_obj_tdata
),
2183 /* The ARM linker needs to keep track of the number of relocs that it
2184 decides to copy in check_relocs for each symbol. This is so that
2185 it can discard PC relative relocs if it doesn't need them when
2186 linking with -Bsymbolic. We store the information in a field
2187 extending the regular ELF linker hash table. */
2189 /* This structure keeps track of the number of relocs we have copied
2190 for a given symbol. */
2191 struct elf32_arm_relocs_copied
2194 struct elf32_arm_relocs_copied
* next
;
2195 /* A section in dynobj. */
2197 /* Number of relocs copied in this section. */
2198 bfd_size_type count
;
2199 /* Number of PC-relative relocs copied in this section. */
2200 bfd_size_type pc_count
;
2203 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2205 /* Arm ELF linker hash entry. */
2206 struct elf32_arm_link_hash_entry
2208 struct elf_link_hash_entry root
;
2210 /* Number of PC relative relocs copied for this symbol. */
2211 struct elf32_arm_relocs_copied
* relocs_copied
;
2213 /* We reference count Thumb references to a PLT entry separately,
2214 so that we can emit the Thumb trampoline only if needed. */
2215 bfd_signed_vma plt_thumb_refcount
;
2217 /* Some references from Thumb code may be eliminated by BL->BLX
2218 conversion, so record them separately. */
2219 bfd_signed_vma plt_maybe_thumb_refcount
;
2221 /* Since PLT entries have variable size if the Thumb prologue is
2222 used, we need to record the index into .got.plt instead of
2223 recomputing it from the PLT offset. */
2224 bfd_signed_vma plt_got_offset
;
2226 #define GOT_UNKNOWN 0
2227 #define GOT_NORMAL 1
2228 #define GOT_TLS_GD 2
2229 #define GOT_TLS_IE 4
2230 unsigned char tls_type
;
2232 /* The symbol marking the real symbol location for exported thumb
2233 symbols with Arm stubs. */
2234 struct elf_link_hash_entry
*export_glue
;
2236 /* A pointer to the most recently used stub hash entry against this
2238 struct elf32_arm_stub_hash_entry
*stub_cache
;
2241 /* Traverse an arm ELF linker hash table. */
2242 #define elf32_arm_link_hash_traverse(table, func, info) \
2243 (elf_link_hash_traverse \
2245 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2248 /* Get the ARM elf linker hash table from a link_info structure. */
2249 #define elf32_arm_hash_table(info) \
2250 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2252 #define arm_stub_hash_lookup(table, string, create, copy) \
2253 ((struct elf32_arm_stub_hash_entry *) \
2254 bfd_hash_lookup ((table), (string), (create), (copy)))
2256 /* ARM ELF linker hash table. */
2257 struct elf32_arm_link_hash_table
2259 /* The main hash table. */
2260 struct elf_link_hash_table root
;
2262 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2263 bfd_size_type thumb_glue_size
;
2265 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2266 bfd_size_type arm_glue_size
;
2268 /* The size in bytes of section containing the ARMv4 BX veneers. */
2269 bfd_size_type bx_glue_size
;
2271 /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when
2272 veneer has been populated. */
2273 bfd_vma bx_glue_offset
[15];
2275 /* The size in bytes of the section containing glue for VFP11 erratum
2277 bfd_size_type vfp11_erratum_glue_size
;
2279 /* An arbitrary input BFD chosen to hold the glue sections. */
2280 bfd
* bfd_of_glue_owner
;
2282 /* Nonzero to output a BE8 image. */
2285 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2286 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2289 /* The relocation to use for R_ARM_TARGET2 relocations. */
2292 /* 0 = Ignore R_ARM_V4BX.
2293 1 = Convert BX to MOV PC.
2294 2 = Generate v4 interworing stubs. */
2297 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2300 /* What sort of code sequences we should look for which may trigger the
2301 VFP11 denorm erratum. */
2302 bfd_arm_vfp11_fix vfp11_fix
;
2304 /* Global counter for the number of fixes we have emitted. */
2305 int num_vfp11_fixes
;
2307 /* Nonzero to force PIC branch veneers. */
2310 /* The number of bytes in the initial entry in the PLT. */
2311 bfd_size_type plt_header_size
;
2313 /* The number of bytes in the subsequent PLT etries. */
2314 bfd_size_type plt_entry_size
;
2316 /* True if the target system is VxWorks. */
2319 /* True if the target system is Symbian OS. */
2322 /* True if the target uses REL relocations. */
2325 /* Short-cuts to get to dynamic linker sections. */
2334 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2337 /* Data for R_ARM_TLS_LDM32 relocations. */
2340 bfd_signed_vma refcount
;
2344 /* Small local sym to section mapping cache. */
2345 struct sym_sec_cache sym_sec
;
2347 /* For convenience in allocate_dynrelocs. */
2350 /* The stub hash table. */
2351 struct bfd_hash_table stub_hash_table
;
2353 /* Linker stub bfd. */
2356 /* Linker call-backs. */
2357 asection
* (*add_stub_section
) (const char *, asection
*);
2358 void (*layout_sections_again
) (void);
2360 /* Array to keep track of which stub sections have been created, and
2361 information on stub grouping. */
2364 /* This is the section to which stubs in the group will be
2367 /* The stub section. */
2371 /* Assorted information used by elf32_arm_size_stubs. */
2372 unsigned int bfd_count
;
2374 asection
**input_list
;
2377 /* Create an entry in an ARM ELF linker hash table. */
2379 static struct bfd_hash_entry
*
2380 elf32_arm_link_hash_newfunc (struct bfd_hash_entry
* entry
,
2381 struct bfd_hash_table
* table
,
2382 const char * string
)
2384 struct elf32_arm_link_hash_entry
* ret
=
2385 (struct elf32_arm_link_hash_entry
*) entry
;
2387 /* Allocate the structure if it has not already been allocated by a
2390 ret
= bfd_hash_allocate (table
, sizeof (struct elf32_arm_link_hash_entry
));
2392 return (struct bfd_hash_entry
*) ret
;
2394 /* Call the allocation method of the superclass. */
2395 ret
= ((struct elf32_arm_link_hash_entry
*)
2396 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2400 ret
->relocs_copied
= NULL
;
2401 ret
->tls_type
= GOT_UNKNOWN
;
2402 ret
->plt_thumb_refcount
= 0;
2403 ret
->plt_maybe_thumb_refcount
= 0;
2404 ret
->plt_got_offset
= -1;
2405 ret
->export_glue
= NULL
;
2407 ret
->stub_cache
= NULL
;
2410 return (struct bfd_hash_entry
*) ret
;
2413 /* Initialize an entry in the stub hash table. */
2415 static struct bfd_hash_entry
*
2416 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
2417 struct bfd_hash_table
*table
,
2420 /* Allocate the structure if it has not already been allocated by a
2424 entry
= bfd_hash_allocate (table
,
2425 sizeof (struct elf32_arm_stub_hash_entry
));
2430 /* Call the allocation method of the superclass. */
2431 entry
= bfd_hash_newfunc (entry
, table
, string
);
2434 struct elf32_arm_stub_hash_entry
*eh
;
2436 /* Initialize the local fields. */
2437 eh
= (struct elf32_arm_stub_hash_entry
*) entry
;
2438 eh
->stub_sec
= NULL
;
2439 eh
->stub_offset
= 0;
2440 eh
->target_value
= 0;
2441 eh
->target_section
= NULL
;
2442 eh
->stub_type
= arm_stub_none
;
2450 /* Return true if NAME is the name of the relocation section associated
2454 reloc_section_p (struct elf32_arm_link_hash_table
*htab
,
2455 const char *name
, asection
*s
)
2458 return CONST_STRNEQ (name
, ".rel") && strcmp (s
->name
, name
+ 4) == 0;
2460 return CONST_STRNEQ (name
, ".rela") && strcmp (s
->name
, name
+ 5) == 0;
2463 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2464 shortcuts to them in our hash table. */
2467 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
2469 struct elf32_arm_link_hash_table
*htab
;
2471 htab
= elf32_arm_hash_table (info
);
2472 /* BPABI objects never have a GOT, or associated sections. */
2473 if (htab
->symbian_p
)
2476 if (! _bfd_elf_create_got_section (dynobj
, info
))
2479 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
2480 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
2481 if (!htab
->sgot
|| !htab
->sgotplt
)
2484 htab
->srelgot
= bfd_make_section_with_flags (dynobj
,
2485 RELOC_SECTION (htab
, ".got"),
2486 (SEC_ALLOC
| SEC_LOAD
2489 | SEC_LINKER_CREATED
2491 if (htab
->srelgot
== NULL
2492 || ! bfd_set_section_alignment (dynobj
, htab
->srelgot
, 2))
2497 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2498 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2502 elf32_arm_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
2504 struct elf32_arm_link_hash_table
*htab
;
2506 htab
= elf32_arm_hash_table (info
);
2507 if (!htab
->sgot
&& !create_got_section (dynobj
, info
))
2510 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
2513 htab
->splt
= bfd_get_section_by_name (dynobj
, ".plt");
2514 htab
->srelplt
= bfd_get_section_by_name (dynobj
,
2515 RELOC_SECTION (htab
, ".plt"));
2516 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
2518 htab
->srelbss
= bfd_get_section_by_name (dynobj
,
2519 RELOC_SECTION (htab
, ".bss"));
2521 if (htab
->vxworks_p
)
2523 if (!elf_vxworks_create_dynamic_sections (dynobj
, info
, &htab
->srelplt2
))
2528 htab
->plt_header_size
= 0;
2529 htab
->plt_entry_size
2530 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry
);
2534 htab
->plt_header_size
2535 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry
);
2536 htab
->plt_entry_size
2537 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry
);
2544 || (!info
->shared
&& !htab
->srelbss
))
2550 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2553 elf32_arm_copy_indirect_symbol (struct bfd_link_info
*info
,
2554 struct elf_link_hash_entry
*dir
,
2555 struct elf_link_hash_entry
*ind
)
2557 struct elf32_arm_link_hash_entry
*edir
, *eind
;
2559 edir
= (struct elf32_arm_link_hash_entry
*) dir
;
2560 eind
= (struct elf32_arm_link_hash_entry
*) ind
;
2562 if (eind
->relocs_copied
!= NULL
)
2564 if (edir
->relocs_copied
!= NULL
)
2566 struct elf32_arm_relocs_copied
**pp
;
2567 struct elf32_arm_relocs_copied
*p
;
2569 /* Add reloc counts against the indirect sym to the direct sym
2570 list. Merge any entries against the same section. */
2571 for (pp
= &eind
->relocs_copied
; (p
= *pp
) != NULL
; )
2573 struct elf32_arm_relocs_copied
*q
;
2575 for (q
= edir
->relocs_copied
; q
!= NULL
; q
= q
->next
)
2576 if (q
->section
== p
->section
)
2578 q
->pc_count
+= p
->pc_count
;
2579 q
->count
+= p
->count
;
2586 *pp
= edir
->relocs_copied
;
2589 edir
->relocs_copied
= eind
->relocs_copied
;
2590 eind
->relocs_copied
= NULL
;
2593 if (ind
->root
.type
== bfd_link_hash_indirect
)
2595 /* Copy over PLT info. */
2596 edir
->plt_thumb_refcount
+= eind
->plt_thumb_refcount
;
2597 eind
->plt_thumb_refcount
= 0;
2598 edir
->plt_maybe_thumb_refcount
+= eind
->plt_maybe_thumb_refcount
;
2599 eind
->plt_maybe_thumb_refcount
= 0;
2601 if (dir
->got
.refcount
<= 0)
2603 edir
->tls_type
= eind
->tls_type
;
2604 eind
->tls_type
= GOT_UNKNOWN
;
2608 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2611 /* Create an ARM elf linker hash table. */
2613 static struct bfd_link_hash_table
*
2614 elf32_arm_link_hash_table_create (bfd
*abfd
)
2616 struct elf32_arm_link_hash_table
*ret
;
2617 bfd_size_type amt
= sizeof (struct elf32_arm_link_hash_table
);
2619 ret
= bfd_malloc (amt
);
2623 if (!_bfd_elf_link_hash_table_init (& ret
->root
, abfd
,
2624 elf32_arm_link_hash_newfunc
,
2625 sizeof (struct elf32_arm_link_hash_entry
)))
2632 ret
->sgotplt
= NULL
;
2633 ret
->srelgot
= NULL
;
2635 ret
->srelplt
= NULL
;
2636 ret
->sdynbss
= NULL
;
2637 ret
->srelbss
= NULL
;
2638 ret
->srelplt2
= NULL
;
2639 ret
->thumb_glue_size
= 0;
2640 ret
->arm_glue_size
= 0;
2641 ret
->bx_glue_size
= 0;
2642 memset (ret
->bx_glue_offset
, 0, sizeof (ret
->bx_glue_offset
));
2643 ret
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
2644 ret
->vfp11_erratum_glue_size
= 0;
2645 ret
->num_vfp11_fixes
= 0;
2646 ret
->bfd_of_glue_owner
= NULL
;
2647 ret
->byteswap_code
= 0;
2648 ret
->target1_is_rel
= 0;
2649 ret
->target2_reloc
= R_ARM_NONE
;
2650 #ifdef FOUR_WORD_PLT
2651 ret
->plt_header_size
= 16;
2652 ret
->plt_entry_size
= 16;
2654 ret
->plt_header_size
= 20;
2655 ret
->plt_entry_size
= 12;
2662 ret
->sym_sec
.abfd
= NULL
;
2664 ret
->tls_ldm_got
.refcount
= 0;
2666 if (!bfd_hash_table_init (&ret
->stub_hash_table
, stub_hash_newfunc
,
2667 sizeof (struct elf32_arm_stub_hash_entry
)))
2673 return &ret
->root
.root
;
2676 /* Free the derived linker hash table. */
2679 elf32_arm_hash_table_free (struct bfd_link_hash_table
*hash
)
2681 struct elf32_arm_link_hash_table
*ret
2682 = (struct elf32_arm_link_hash_table
*) hash
;
2684 bfd_hash_table_free (&ret
->stub_hash_table
);
2685 _bfd_generic_link_hash_table_free (hash
);
2688 /* Determine if we're dealing with a Thumb only architecture. */
2691 using_thumb_only (struct elf32_arm_link_hash_table
*globals
)
2693 int arch
= bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
2697 if (arch
!= TAG_CPU_ARCH_V7
)
2700 profile
= bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
2701 Tag_CPU_arch_profile
);
2703 return profile
== 'M';
2706 /* Determine if we're dealing with a Thumb-2 object. */
2709 using_thumb2 (struct elf32_arm_link_hash_table
*globals
)
2711 int arch
= bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
2713 return arch
== TAG_CPU_ARCH_V6T2
|| arch
>= TAG_CPU_ARCH_V7
;
2716 /* Determine the type of stub needed, if any, for a call. */
2718 static enum elf32_arm_stub_type
2719 arm_type_of_stub (struct bfd_link_info
*info
,
2720 asection
*input_sec
,
2721 const Elf_Internal_Rela
*rel
,
2722 unsigned char st_type
,
2723 struct elf32_arm_link_hash_entry
*hash
,
2724 bfd_vma destination
)
2727 bfd_signed_vma branch_offset
;
2728 unsigned int r_type
;
2729 struct elf32_arm_link_hash_table
* globals
;
2732 enum elf32_arm_stub_type stub_type
= arm_stub_none
;
2734 /* We don't know the actual type of destination in case it is of
2735 type STT_SECTION: give up */
2736 if (st_type
== STT_SECTION
)
2739 globals
= elf32_arm_hash_table (info
);
2741 thumb_only
= using_thumb_only (globals
);
2743 thumb2
= using_thumb2 (globals
);
2745 /* Determine where the call point is. */
2746 location
= (input_sec
->output_offset
2747 + input_sec
->output_section
->vma
2750 branch_offset
= (bfd_signed_vma
)(destination
- location
);
2752 r_type
= ELF32_R_TYPE (rel
->r_info
);
2754 /* If the call will go through a PLT entry then we do not need
2756 if (globals
->splt
!= NULL
&& hash
->root
.plt
.offset
!= (bfd_vma
) -1)
2759 if (r_type
== R_ARM_THM_CALL
)
2762 && (branch_offset
> THM_MAX_FWD_BRANCH_OFFSET
2763 || (branch_offset
< THM_MAX_BWD_BRANCH_OFFSET
)))
2765 && (branch_offset
> THM2_MAX_FWD_BRANCH_OFFSET
2766 || (branch_offset
< THM2_MAX_BWD_BRANCH_OFFSET
)))
2767 || ((st_type
!= STT_ARM_TFUNC
) && !globals
->use_blx
))
2769 if (st_type
== STT_ARM_TFUNC
)
2771 /* Thumb to thumb. */
2774 stub_type
= (info
->shared
| globals
->pic_veneer
)
2775 ? ((globals
->use_blx
)
2776 ? arm_stub_pic_long_branch
2778 : (globals
->use_blx
)
2779 ? arm_stub_long_branch
2784 stub_type
= (info
->shared
| globals
->pic_veneer
)
2786 : (globals
->use_blx
)
2787 ? arm_thumb_thumb_stub_long_branch
2794 stub_type
= (info
->shared
| globals
->pic_veneer
)
2795 ? ((globals
->use_blx
)
2796 ? arm_stub_pic_long_branch
2798 : (globals
->use_blx
)
2799 ? arm_stub_long_branch
2800 : arm_thumb_arm_v4t_stub_long_branch
;
2804 else if (r_type
== R_ARM_CALL
)
2806 if (st_type
== STT_ARM_TFUNC
)
2809 /* We have an extra 2-bytes reach because of the mode change
2810 (bit 24 (H) of BLX encoding). */
2811 if (branch_offset
> (ARM_MAX_FWD_BRANCH_OFFSET
+ 2)
2812 || (branch_offset
< ARM_MAX_BWD_BRANCH_OFFSET
)
2813 || !globals
->use_blx
)
2815 stub_type
= (info
->shared
| globals
->pic_veneer
)
2816 ? arm_stub_pic_long_branch
2817 : (globals
->use_blx
)
2818 ? arm_stub_long_branch
2819 : arm_thumb_v4t_stub_long_branch
;
2825 if (branch_offset
> ARM_MAX_FWD_BRANCH_OFFSET
2826 || (branch_offset
< ARM_MAX_BWD_BRANCH_OFFSET
))
2828 stub_type
= (info
->shared
| globals
->pic_veneer
)
2829 ? arm_stub_pic_long_branch
2830 : arm_stub_long_branch
;
2838 /* Build a name for an entry in the stub hash table. */
2841 elf32_arm_stub_name (const asection
*input_section
,
2842 const asection
*sym_sec
,
2843 const struct elf32_arm_link_hash_entry
*hash
,
2844 const Elf_Internal_Rela
*rel
)
2851 len
= 8 + 1 + strlen (hash
->root
.root
.root
.string
) + 1 + 8 + 1;
2852 stub_name
= bfd_malloc (len
);
2853 if (stub_name
!= NULL
)
2854 sprintf (stub_name
, "%08x_%s+%x",
2855 input_section
->id
& 0xffffffff,
2856 hash
->root
.root
.root
.string
,
2857 (int) rel
->r_addend
& 0xffffffff);
2861 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
2862 stub_name
= bfd_malloc (len
);
2863 if (stub_name
!= NULL
)
2864 sprintf (stub_name
, "%08x_%x:%x+%x",
2865 input_section
->id
& 0xffffffff,
2866 sym_sec
->id
& 0xffffffff,
2867 (int) ELF32_R_SYM (rel
->r_info
) & 0xffffffff,
2868 (int) rel
->r_addend
& 0xffffffff);
2874 /* Look up an entry in the stub hash. Stub entries are cached because
2875 creating the stub name takes a bit of time. */
2877 static struct elf32_arm_stub_hash_entry
*
2878 elf32_arm_get_stub_entry (const asection
*input_section
,
2879 const asection
*sym_sec
,
2880 struct elf_link_hash_entry
*hash
,
2881 const Elf_Internal_Rela
*rel
,
2882 struct elf32_arm_link_hash_table
*htab
)
2884 struct elf32_arm_stub_hash_entry
*stub_entry
;
2885 struct elf32_arm_link_hash_entry
*h
= (struct elf32_arm_link_hash_entry
*) hash
;
2886 const asection
*id_sec
;
2888 if ((input_section
->flags
& SEC_CODE
) == 0)
2891 /* If this input section is part of a group of sections sharing one
2892 stub section, then use the id of the first section in the group.
2893 Stub names need to include a section id, as there may well be
2894 more than one stub used to reach say, printf, and we need to
2895 distinguish between them. */
2896 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
2898 if (h
!= NULL
&& h
->stub_cache
!= NULL
2899 && h
->stub_cache
->h
== h
2900 && h
->stub_cache
->id_sec
== id_sec
)
2902 stub_entry
= h
->stub_cache
;
2908 stub_name
= elf32_arm_stub_name (id_sec
, sym_sec
, h
, rel
);
2909 if (stub_name
== NULL
)
2912 stub_entry
= arm_stub_hash_lookup (&htab
->stub_hash_table
,
2913 stub_name
, FALSE
, FALSE
);
2915 h
->stub_cache
= stub_entry
;
2923 /* Add a new stub entry to the stub hash. Not all fields of the new
2924 stub entry are initialised. */
2926 static struct elf32_arm_stub_hash_entry
*
2927 elf32_arm_add_stub (const char *stub_name
,
2929 struct elf32_arm_link_hash_table
*htab
)
2933 struct elf32_arm_stub_hash_entry
*stub_entry
;
2935 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
2936 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
2937 if (stub_sec
== NULL
)
2939 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
2940 if (stub_sec
== NULL
)
2946 namelen
= strlen (link_sec
->name
);
2947 len
= namelen
+ sizeof (STUB_SUFFIX
);
2948 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
2952 memcpy (s_name
, link_sec
->name
, namelen
);
2953 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
2954 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
2955 if (stub_sec
== NULL
)
2957 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
2959 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
2962 /* Enter this entry into the linker stub hash table. */
2963 stub_entry
= arm_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
2965 if (stub_entry
== NULL
)
2967 (*_bfd_error_handler
) (_("%s: cannot create stub entry %s"),
2973 stub_entry
->stub_sec
= stub_sec
;
2974 stub_entry
->stub_offset
= 0;
2975 stub_entry
->id_sec
= link_sec
;
2980 /* Store an Arm insn into an output section not processed by
2981 elf32_arm_write_section. */
2984 put_arm_insn (struct elf32_arm_link_hash_table
*htab
,
2985 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
2987 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
2988 bfd_putl32 (val
, ptr
);
2990 bfd_putb32 (val
, ptr
);
2993 /* Store a 16-bit Thumb insn into an output section not processed by
2994 elf32_arm_write_section. */
2997 put_thumb_insn (struct elf32_arm_link_hash_table
*htab
,
2998 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
3000 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
3001 bfd_putl16 (val
, ptr
);
3003 bfd_putb16 (val
, ptr
);
3007 arm_build_one_stub (struct bfd_hash_entry
*gen_entry
,
3010 struct elf32_arm_stub_hash_entry
*stub_entry
;
3011 struct bfd_link_info
*info
;
3012 struct elf32_arm_link_hash_table
*htab
;
3020 const bfd_vma
*template;
3022 struct elf32_arm_link_hash_table
* globals
;
3024 /* Massage our args to the form they really have. */
3025 stub_entry
= (struct elf32_arm_stub_hash_entry
*) gen_entry
;
3026 info
= (struct bfd_link_info
*) in_arg
;
3028 globals
= elf32_arm_hash_table (info
);
3030 htab
= elf32_arm_hash_table (info
);
3031 stub_sec
= stub_entry
->stub_sec
;
3033 /* Make a note of the offset within the stubs for this entry. */
3034 stub_entry
->stub_offset
= stub_sec
->size
;
3035 loc
= stub_sec
->contents
+ stub_entry
->stub_offset
;
3037 stub_bfd
= stub_sec
->owner
;
3039 /* This is the address of the start of the stub. */
3040 stub_addr
= stub_sec
->output_section
->vma
+ stub_sec
->output_offset
3041 + stub_entry
->stub_offset
;
3043 /* This is the address of the stub destination. */
3044 sym_value
= (stub_entry
->target_value
3045 + stub_entry
->target_section
->output_offset
3046 + stub_entry
->target_section
->output_section
->vma
);
3048 switch (stub_entry
->stub_type
)
3050 case arm_stub_long_branch
:
3051 template = arm_long_branch_stub
;
3052 template_size
= (sizeof (arm_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3054 case arm_thumb_v4t_stub_long_branch
:
3055 template = arm_thumb_v4t_long_branch_stub
;
3056 template_size
= (sizeof (arm_thumb_v4t_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3058 case arm_thumb_thumb_stub_long_branch
:
3059 template = arm_thumb_thumb_long_branch_stub
;
3060 template_size
= (sizeof (arm_thumb_thumb_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3062 case arm_thumb_arm_v4t_stub_long_branch
:
3063 template = arm_thumb_arm_v4t_long_branch_stub
;
3064 template_size
= (sizeof (arm_thumb_arm_v4t_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3066 case arm_stub_pic_long_branch
:
3067 template = arm_pic_long_branch_stub
;
3068 template_size
= (sizeof (arm_pic_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3076 for (i
= 0; i
< (template_size
/ 4); i
++)
3078 /* A 0 pattern is a placeholder, every other pattern is an
3080 if (template[i
] != 0)
3081 put_arm_insn (globals
, stub_bfd
, template[i
], loc
+ size
);
3083 bfd_put_32 (stub_bfd
, template[i
], loc
+ size
);
3087 stub_sec
->size
+= size
;
3089 /* Destination is Thumb. Force bit 0 to 1 to reflect this. */
3090 if (stub_entry
->st_type
== STT_ARM_TFUNC
)
3093 switch (stub_entry
->stub_type
)
3095 case arm_stub_long_branch
:
3096 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32
),
3097 stub_bfd
, stub_sec
, stub_sec
->contents
+ 4,
3098 stub_entry
->stub_offset
, sym_value
, 0);
3100 case arm_thumb_v4t_stub_long_branch
:
3101 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32
),
3102 stub_bfd
, stub_sec
, stub_sec
->contents
+ 8,
3103 stub_entry
->stub_offset
, sym_value
, 0);
3105 case arm_thumb_thumb_stub_long_branch
:
3106 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32
),
3107 stub_bfd
, stub_sec
, stub_sec
->contents
+ 12,
3108 stub_entry
->stub_offset
, sym_value
, 0);
3110 case arm_thumb_arm_v4t_stub_long_branch
:
3111 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32
),
3112 stub_bfd
, stub_sec
, stub_sec
->contents
+ 20,
3113 stub_entry
->stub_offset
, sym_value
, 0);
3115 case arm_stub_pic_long_branch
:
3116 /* We want the value relative to the address 8 bytes from the
3117 start of the stub. */
3118 sym_value
-= stub_addr
+ 8;
3120 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32
),
3121 stub_bfd
, stub_sec
, stub_sec
->contents
+ 8,
3122 stub_entry
->stub_offset
, sym_value
, 0);
3131 /* As above, but don't actually build the stub. Just bump offset so
3132 we know stub section sizes. */
3135 arm_size_one_stub (struct bfd_hash_entry
*gen_entry
,
3138 struct elf32_arm_stub_hash_entry
*stub_entry
;
3139 struct elf32_arm_link_hash_table
*htab
;
3140 const bfd_vma
*template;
3145 /* Massage our args to the form they really have. */
3146 stub_entry
= (struct elf32_arm_stub_hash_entry
*) gen_entry
;
3147 htab
= (struct elf32_arm_link_hash_table
*) in_arg
;
3149 switch (stub_entry
->stub_type
)
3151 case arm_stub_long_branch
:
3152 template = arm_long_branch_stub
;
3153 template_size
= (sizeof (arm_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3155 case arm_thumb_v4t_stub_long_branch
:
3156 template = arm_thumb_v4t_long_branch_stub
;
3157 template_size
= (sizeof (arm_thumb_v4t_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3159 case arm_thumb_thumb_stub_long_branch
:
3160 template = arm_thumb_thumb_long_branch_stub
;
3161 template_size
= (sizeof (arm_thumb_thumb_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3163 case arm_thumb_arm_v4t_stub_long_branch
:
3164 template = arm_thumb_arm_v4t_long_branch_stub
;
3165 template_size
= (sizeof (arm_thumb_arm_v4t_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3167 case arm_stub_pic_long_branch
:
3168 template = arm_pic_long_branch_stub
;
3169 template_size
= (sizeof (arm_pic_long_branch_stub
) / sizeof (bfd_vma
)) * 4;
3178 for (i
= 0; i
< (template_size
/ 4); i
++)
3180 size
= (size
+ 7) & ~7;
3181 stub_entry
->stub_sec
->size
+= size
;
3185 /* External entry points for sizing and building linker stubs. */
3187 /* Set up various things so that we can make a list of input sections
3188 for each output section included in the link. Returns -1 on error,
3189 0 when no stubs will be needed, and 1 on success. */
3192 elf32_arm_setup_section_lists (bfd
*output_bfd
,
3193 struct bfd_link_info
*info
)
3196 unsigned int bfd_count
;
3197 int top_id
, top_index
;
3199 asection
**input_list
, **list
;
3201 struct elf32_arm_link_hash_table
*htab
= elf32_arm_hash_table (info
);
3203 if (! is_elf_hash_table (htab
))
3206 /* Count the number of input BFDs and find the top input section id. */
3207 for (input_bfd
= info
->input_bfds
, bfd_count
= 0, top_id
= 0;
3209 input_bfd
= input_bfd
->link_next
)
3212 for (section
= input_bfd
->sections
;
3214 section
= section
->next
)
3216 if (top_id
< section
->id
)
3217 top_id
= section
->id
;
3220 htab
->bfd_count
= bfd_count
;
3222 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
3223 htab
->stub_group
= bfd_zmalloc (amt
);
3224 if (htab
->stub_group
== NULL
)
3227 /* We can't use output_bfd->section_count here to find the top output
3228 section index as some sections may have been removed, and
3229 _bfd_strip_section_from_output doesn't renumber the indices. */
3230 for (section
= output_bfd
->sections
, top_index
= 0;
3232 section
= section
->next
)
3234 if (top_index
< section
->index
)
3235 top_index
= section
->index
;
3238 htab
->top_index
= top_index
;
3239 amt
= sizeof (asection
*) * (top_index
+ 1);
3240 input_list
= bfd_malloc (amt
);
3241 htab
->input_list
= input_list
;
3242 if (input_list
== NULL
)
3245 /* For sections we aren't interested in, mark their entries with a
3246 value we can check later. */
3247 list
= input_list
+ top_index
;
3249 *list
= bfd_abs_section_ptr
;
3250 while (list
-- != input_list
);
3252 for (section
= output_bfd
->sections
;
3254 section
= section
->next
)
3256 if ((section
->flags
& SEC_CODE
) != 0)
3257 input_list
[section
->index
] = NULL
;
3263 /* The linker repeatedly calls this function for each input section,
3264 in the order that input sections are linked into output sections.
3265 Build lists of input sections to determine groupings between which
3266 we may insert linker stubs. */
3269 elf32_arm_next_input_section (struct bfd_link_info
*info
,
3272 struct elf32_arm_link_hash_table
*htab
= elf32_arm_hash_table (info
);
3274 if (isec
->output_section
->index
<= htab
->top_index
)
3276 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
3278 if (*list
!= bfd_abs_section_ptr
)
3280 /* Steal the link_sec pointer for our list. */
3281 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3282 /* This happens to make the list in reverse order,
3283 which is what we want. */
3284 PREV_SEC (isec
) = *list
;
3290 /* See whether we can group stub sections together. Grouping stub
3291 sections may result in fewer stubs. More importantly, we need to
3292 put all .init* and .fini* stubs at the beginning of the .init or
3293 .fini output sections respectively, because glibc splits the
3294 _init and _fini functions into multiple parts. Putting a stub in
3295 the middle of a function is not a good idea. */
3298 group_sections (struct elf32_arm_link_hash_table
*htab
,
3299 bfd_size_type stub_group_size
,
3300 bfd_boolean stubs_always_before_branch
)
3302 asection
**list
= htab
->input_list
+ htab
->top_index
;
3306 asection
*tail
= *list
;
3308 if (tail
== bfd_abs_section_ptr
)
3311 while (tail
!= NULL
)
3315 bfd_size_type total
;
3319 while ((prev
= PREV_SEC (curr
)) != NULL
3320 && ((total
+= curr
->output_offset
- prev
->output_offset
)
3324 /* OK, the size from the start of CURR to the end is less
3325 than stub_group_size and thus can be handled by one stub
3326 section. (Or the tail section is itself larger than
3327 stub_group_size, in which case we may be toast.)
3328 We should really be keeping track of the total size of
3329 stubs added here, as stubs contribute to the final output
3333 prev
= PREV_SEC (tail
);
3334 /* Set up this stub group. */
3335 htab
->stub_group
[tail
->id
].link_sec
= curr
;
3337 while (tail
!= curr
&& (tail
= prev
) != NULL
);
3339 /* But wait, there's more! Input sections up to stub_group_size
3340 bytes before the stub section can be handled by it too. */
3341 if (!stubs_always_before_branch
)
3345 && ((total
+= tail
->output_offset
- prev
->output_offset
)
3349 prev
= PREV_SEC (tail
);
3350 htab
->stub_group
[tail
->id
].link_sec
= curr
;
3356 while (list
-- != htab
->input_list
);
3358 free (htab
->input_list
);
3362 /* Determine and set the size of the stub section for a final link.
3364 The basic idea here is to examine all the relocations looking for
3365 PC-relative calls to a target that is unreachable with a "bl"
3369 elf32_arm_size_stubs (bfd
*output_bfd
,
3371 struct bfd_link_info
*info
,
3372 bfd_signed_vma group_size
,
3373 asection
* (*add_stub_section
) (const char *, asection
*),
3374 void (*layout_sections_again
) (void))
3376 bfd_size_type stub_group_size
;
3377 bfd_boolean stubs_always_before_branch
;
3378 bfd_boolean stub_changed
= 0;
3379 struct elf32_arm_link_hash_table
*htab
= elf32_arm_hash_table (info
);
3381 /* Propagate mach to stub bfd, because it may not have been
3382 finalized when we created stub_bfd. */
3383 bfd_set_arch_mach (stub_bfd
, bfd_get_arch (output_bfd
),
3384 bfd_get_mach (output_bfd
));
3386 /* Stash our params away. */
3387 htab
->stub_bfd
= stub_bfd
;
3388 htab
->add_stub_section
= add_stub_section
;
3389 htab
->layout_sections_again
= layout_sections_again
;
3390 stubs_always_before_branch
= group_size
< 0;
3392 stub_group_size
= -group_size
;
3394 stub_group_size
= group_size
;
3396 if (stub_group_size
== 1)
3398 /* Default values. */
3399 /* Thumb branch range is +-4MB has to be used as the default
3400 maximum size (a given section can contain both ARM and Thumb
3401 code, so the worst case has to be taken into account).
3403 This value is 24K less than that, which allows for 2025
3404 12-byte stubs. If we exceed that, then we will fail to link.
3405 The user will have to relink with an explicit group size
3407 stub_group_size
= 4170000;
3410 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
3415 unsigned int bfd_indx
;
3418 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
3420 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
3422 Elf_Internal_Shdr
*symtab_hdr
;
3424 Elf_Internal_Sym
*local_syms
= NULL
;
3426 /* We'll need the symbol table in a second. */
3427 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3428 if (symtab_hdr
->sh_info
== 0)
3431 /* Walk over each section attached to the input bfd. */
3432 for (section
= input_bfd
->sections
;
3434 section
= section
->next
)
3436 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
3438 /* If there aren't any relocs, then there's nothing more
3440 if ((section
->flags
& SEC_RELOC
) == 0
3441 || section
->reloc_count
== 0
3442 || (section
->flags
& SEC_CODE
) == 0)
3445 /* If this section is a link-once section that will be
3446 discarded, then don't create any stubs. */
3447 if (section
->output_section
== NULL
3448 || section
->output_section
->owner
!= output_bfd
)
3451 /* Get the relocs. */
3453 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
,
3454 NULL
, info
->keep_memory
);
3455 if (internal_relocs
== NULL
)
3456 goto error_ret_free_local
;
3458 /* Now examine each relocation. */
3459 irela
= internal_relocs
;
3460 irelaend
= irela
+ section
->reloc_count
;
3461 for (; irela
< irelaend
; irela
++)
3463 unsigned int r_type
, r_indx
;
3464 enum elf32_arm_stub_type stub_type
;
3465 struct elf32_arm_stub_hash_entry
*stub_entry
;
3468 bfd_vma destination
;
3469 struct elf32_arm_link_hash_entry
*hash
;
3471 const asection
*id_sec
;
3472 unsigned char st_type
;
3474 r_type
= ELF32_R_TYPE (irela
->r_info
);
3475 r_indx
= ELF32_R_SYM (irela
->r_info
);
3477 if (r_type
>= (unsigned int) R_ARM_max
)
3479 bfd_set_error (bfd_error_bad_value
);
3480 error_ret_free_internal
:
3481 if (elf_section_data (section
)->relocs
== NULL
)
3482 free (internal_relocs
);
3483 goto error_ret_free_local
;
3486 /* Only look for stubs on call instructions. */
3487 if ((r_type
!= (unsigned int) R_ARM_CALL
)
3488 && (r_type
!= (unsigned int) R_ARM_THM_CALL
))
3491 /* Now determine the call target, its name, value,
3497 if (r_indx
< symtab_hdr
->sh_info
)
3499 /* It's a local symbol. */
3500 Elf_Internal_Sym
*sym
;
3501 Elf_Internal_Shdr
*hdr
;
3503 if (local_syms
== NULL
)
3506 = (Elf_Internal_Sym
*) symtab_hdr
->contents
;
3507 if (local_syms
== NULL
)
3509 = bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
3510 symtab_hdr
->sh_info
, 0,
3512 if (local_syms
== NULL
)
3513 goto error_ret_free_internal
;
3516 sym
= local_syms
+ r_indx
;
3517 hdr
= elf_elfsections (input_bfd
)[sym
->st_shndx
];
3518 sym_sec
= hdr
->bfd_section
;
3519 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
3520 sym_value
= sym
->st_value
;
3521 destination
= (sym_value
+ irela
->r_addend
3522 + sym_sec
->output_offset
3523 + sym_sec
->output_section
->vma
);
3524 st_type
= ELF_ST_TYPE (sym
->st_info
);
3528 /* It's an external symbol. */
3531 e_indx
= r_indx
- symtab_hdr
->sh_info
;
3532 hash
= ((struct elf32_arm_link_hash_entry
*)
3533 elf_sym_hashes (input_bfd
)[e_indx
]);
3535 while (hash
->root
.root
.type
== bfd_link_hash_indirect
3536 || hash
->root
.root
.type
== bfd_link_hash_warning
)
3537 hash
= ((struct elf32_arm_link_hash_entry
*)
3538 hash
->root
.root
.u
.i
.link
);
3540 if (hash
->root
.root
.type
== bfd_link_hash_defined
3541 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
3543 sym_sec
= hash
->root
.root
.u
.def
.section
;
3544 sym_value
= hash
->root
.root
.u
.def
.value
;
3545 if (sym_sec
->output_section
!= NULL
)
3546 destination
= (sym_value
+ irela
->r_addend
3547 + sym_sec
->output_offset
3548 + sym_sec
->output_section
->vma
);
3550 else if (hash
->root
.root
.type
== bfd_link_hash_undefweak
3551 || hash
->root
.root
.type
== bfd_link_hash_undefined
)
3552 /* For a shared library, these will need a PLT stub,
3553 which is treated separately.
3554 For absolute code, they cannot be handled. */
3558 bfd_set_error (bfd_error_bad_value
);
3559 goto error_ret_free_internal
;
3561 st_type
= ELF_ST_TYPE (hash
->root
.type
);
3564 /* Determine what (if any) linker stub is needed. */
3565 stub_type
= arm_type_of_stub (info
, section
, irela
, st_type
,
3567 if (stub_type
== arm_stub_none
)
3570 /* Support for grouping stub sections. */
3571 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
3573 /* Get the name of this stub. */
3574 stub_name
= elf32_arm_stub_name (id_sec
, sym_sec
, hash
, irela
);
3576 goto error_ret_free_internal
;
3578 stub_entry
= arm_stub_hash_lookup (&htab
->stub_hash_table
,
3581 if (stub_entry
!= NULL
)
3583 /* The proper stub has already been created. */
3588 stub_entry
= elf32_arm_add_stub (stub_name
, section
, htab
);
3589 if (stub_entry
== NULL
)
3592 goto error_ret_free_internal
;
3595 stub_entry
->target_value
= sym_value
;
3596 stub_entry
->target_section
= sym_sec
;
3597 stub_entry
->stub_type
= stub_type
;
3598 stub_entry
->h
= hash
;
3599 stub_entry
->st_type
= st_type
;
3600 stub_changed
= TRUE
;
3603 /* We're done with the internal relocs, free them. */
3604 if (elf_section_data (section
)->relocs
== NULL
)
3605 free (internal_relocs
);
3612 /* OK, we've added some stubs. Find out the new size of the
3614 for (stub_sec
= htab
->stub_bfd
->sections
;
3616 stub_sec
= stub_sec
->next
)
3619 bfd_hash_traverse (&htab
->stub_hash_table
, arm_size_one_stub
, htab
);
3621 /* Ask the linker to do its stuff. */
3622 (*htab
->layout_sections_again
) ();
3623 stub_changed
= FALSE
;
3628 error_ret_free_local
:
3632 /* Build all the stubs associated with the current output file. The
3633 stubs are kept in a hash table attached to the main linker hash
3634 table. We also set up the .plt entries for statically linked PIC
3635 functions here. This function is called via arm_elf_finish in the
3639 elf32_arm_build_stubs (struct bfd_link_info
*info
)
3642 struct bfd_hash_table
*table
;
3643 struct elf32_arm_link_hash_table
*htab
;
3645 htab
= elf32_arm_hash_table (info
);
3647 for (stub_sec
= htab
->stub_bfd
->sections
;
3649 stub_sec
= stub_sec
->next
)
3653 /* Ignore non-stub sections */
3654 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
3657 /* Allocate memory to hold the linker stubs. */
3658 size
= stub_sec
->size
;
3659 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
3660 if (stub_sec
->contents
== NULL
&& size
!= 0)
3665 /* Build the stubs as directed by the stub hash table. */
3666 table
= &htab
->stub_hash_table
;
3667 bfd_hash_traverse (table
, arm_build_one_stub
, info
);
3672 /* Locate the Thumb encoded calling stub for NAME. */
3674 static struct elf_link_hash_entry
*
3675 find_thumb_glue (struct bfd_link_info
*link_info
,
3677 char **error_message
)
3680 struct elf_link_hash_entry
*hash
;
3681 struct elf32_arm_link_hash_table
*hash_table
;
3683 /* We need a pointer to the armelf specific hash table. */
3684 hash_table
= elf32_arm_hash_table (link_info
);
3686 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
3687 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
3689 BFD_ASSERT (tmp_name
);
3691 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
3693 hash
= elf_link_hash_lookup
3694 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3697 && asprintf (error_message
, _("unable to find THUMB glue '%s' for '%s'"),
3698 tmp_name
, name
) == -1)
3699 *error_message
= (char *) bfd_errmsg (bfd_error_system_call
);
3706 /* Locate the ARM encoded calling stub for NAME. */
3708 static struct elf_link_hash_entry
*
3709 find_arm_glue (struct bfd_link_info
*link_info
,
3711 char **error_message
)
3714 struct elf_link_hash_entry
*myh
;
3715 struct elf32_arm_link_hash_table
*hash_table
;
3717 /* We need a pointer to the elfarm specific hash table. */
3718 hash_table
= elf32_arm_hash_table (link_info
);
3720 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
3721 + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
3723 BFD_ASSERT (tmp_name
);
3725 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
3727 myh
= elf_link_hash_lookup
3728 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3731 && asprintf (error_message
, _("unable to find ARM glue '%s' for '%s'"),
3732 tmp_name
, name
) == -1)
3733 *error_message
= (char *) bfd_errmsg (bfd_error_system_call
);
3740 /* ARM->Thumb glue (static images):
3744 ldr r12, __func_addr
3747 .word func @ behave as if you saw a ARM_32 reloc.
3754 .word func @ behave as if you saw a ARM_32 reloc.
3756 (relocatable images)
3759 ldr r12, __func_offset
3766 #define ARM2THUMB_STATIC_GLUE_SIZE 12
3767 static const insn32 a2t1_ldr_insn
= 0xe59fc000;
3768 static const insn32 a2t2_bx_r12_insn
= 0xe12fff1c;
3769 static const insn32 a2t3_func_addr_insn
= 0x00000001;
3771 #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
3772 static const insn32 a2t1v5_ldr_insn
= 0xe51ff004;
3773 static const insn32 a2t2v5_func_addr_insn
= 0x00000001;
3775 #define ARM2THUMB_PIC_GLUE_SIZE 16
3776 static const insn32 a2t1p_ldr_insn
= 0xe59fc004;
3777 static const insn32 a2t2p_add_pc_insn
= 0xe08cc00f;
3778 static const insn32 a2t3p_bx_r12_insn
= 0xe12fff1c;
3780 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
3784 __func_from_thumb: __func_from_thumb:
3786 nop ldr r6, __func_addr
3788 __func_change_to_arm: bx r6
3790 __func_back_to_thumb:
3796 #define THUMB2ARM_GLUE_SIZE 8
3797 static const insn16 t2a1_bx_pc_insn
= 0x4778;
3798 static const insn16 t2a2_noop_insn
= 0x46c0;
3799 static const insn32 t2a3_b_insn
= 0xea000000;
3801 #define VFP11_ERRATUM_VENEER_SIZE 8
3803 #define ARM_BX_VENEER_SIZE 12
3804 static const insn32 armbx1_tst_insn
= 0xe3100001;
3805 static const insn32 armbx2_moveq_insn
= 0x01a0f000;
3806 static const insn32 armbx3_bx_insn
= 0xe12fff10;
3808 #ifndef ELFARM_NABI_C_INCLUDED
3810 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info
* info
)
3814 struct elf32_arm_link_hash_table
* globals
;
3816 globals
= elf32_arm_hash_table (info
);
3818 BFD_ASSERT (globals
!= NULL
);
3820 if (globals
->arm_glue_size
!= 0)
3822 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3824 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
3825 ARM2THUMB_GLUE_SECTION_NAME
);
3827 BFD_ASSERT (s
!= NULL
);
3829 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->arm_glue_size
);
3831 BFD_ASSERT (s
->size
== globals
->arm_glue_size
);
3835 if (globals
->thumb_glue_size
!= 0)
3837 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3839 s
= bfd_get_section_by_name
3840 (globals
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
3842 BFD_ASSERT (s
!= NULL
);
3844 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->thumb_glue_size
);
3846 BFD_ASSERT (s
->size
== globals
->thumb_glue_size
);
3850 if (globals
->vfp11_erratum_glue_size
!= 0)
3852 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3854 s
= bfd_get_section_by_name
3855 (globals
->bfd_of_glue_owner
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
3857 BFD_ASSERT (s
!= NULL
);
3859 foo
= bfd_alloc (globals
->bfd_of_glue_owner
,
3860 globals
->vfp11_erratum_glue_size
);
3862 BFD_ASSERT (s
->size
== globals
->vfp11_erratum_glue_size
);
3866 if (globals
->bx_glue_size
!= 0)
3868 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3870 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
3871 ARM_BX_GLUE_SECTION_NAME
);
3873 BFD_ASSERT (s
!= NULL
);
3875 foo
= bfd_alloc (globals
->bfd_of_glue_owner
, globals
->bx_glue_size
);
3877 BFD_ASSERT (s
->size
== globals
->bx_glue_size
);
3884 /* Allocate space and symbols for calling a Thumb function from Arm mode.
3885 returns the symbol identifying the stub. */
3887 static struct elf_link_hash_entry
*
3888 record_arm_to_thumb_glue (struct bfd_link_info
* link_info
,
3889 struct elf_link_hash_entry
* h
)
3891 const char * name
= h
->root
.root
.string
;
3894 struct elf_link_hash_entry
* myh
;
3895 struct bfd_link_hash_entry
* bh
;
3896 struct elf32_arm_link_hash_table
* globals
;
3900 globals
= elf32_arm_hash_table (link_info
);
3902 BFD_ASSERT (globals
!= NULL
);
3903 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
3905 s
= bfd_get_section_by_name
3906 (globals
->bfd_of_glue_owner
, ARM2THUMB_GLUE_SECTION_NAME
);
3908 BFD_ASSERT (s
!= NULL
);
3910 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
) + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
3912 BFD_ASSERT (tmp_name
);
3914 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
3916 myh
= elf_link_hash_lookup
3917 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3921 /* We've already seen this guy. */
3926 /* The only trick here is using hash_table->arm_glue_size as the value.
3927 Even though the section isn't allocated yet, this is where we will be
3930 val
= globals
->arm_glue_size
+ 1;
3931 _bfd_generic_link_add_one_symbol (link_info
, globals
->bfd_of_glue_owner
,
3932 tmp_name
, BSF_GLOBAL
, s
, val
,
3933 NULL
, TRUE
, FALSE
, &bh
);
3935 myh
= (struct elf_link_hash_entry
*) bh
;
3936 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
3937 myh
->forced_local
= 1;
3941 if (link_info
->shared
|| globals
->root
.is_relocatable_executable
3942 || globals
->pic_veneer
)
3943 size
= ARM2THUMB_PIC_GLUE_SIZE
;
3944 else if (globals
->use_blx
)
3945 size
= ARM2THUMB_V5_STATIC_GLUE_SIZE
;
3947 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
3950 globals
->arm_glue_size
+= size
;
3956 record_thumb_to_arm_glue (struct bfd_link_info
*link_info
,
3957 struct elf_link_hash_entry
*h
)
3959 const char *name
= h
->root
.root
.string
;
3962 struct elf_link_hash_entry
*myh
;
3963 struct bfd_link_hash_entry
*bh
;
3964 struct elf32_arm_link_hash_table
*hash_table
;
3967 hash_table
= elf32_arm_hash_table (link_info
);
3969 BFD_ASSERT (hash_table
!= NULL
);
3970 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
3972 s
= bfd_get_section_by_name
3973 (hash_table
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
3975 BFD_ASSERT (s
!= NULL
);
3977 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
3978 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
3980 BFD_ASSERT (tmp_name
);
3982 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
3984 myh
= elf_link_hash_lookup
3985 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3989 /* We've already seen this guy. */
3995 val
= hash_table
->thumb_glue_size
+ 1;
3996 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
3997 tmp_name
, BSF_GLOBAL
, s
, val
,
3998 NULL
, TRUE
, FALSE
, &bh
);
4000 /* If we mark it 'Thumb', the disassembler will do a better job. */
4001 myh
= (struct elf_link_hash_entry
*) bh
;
4002 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
4003 myh
->forced_local
= 1;
4007 #define CHANGE_TO_ARM "__%s_change_to_arm"
4008 #define BACK_FROM_ARM "__%s_back_from_arm"
4010 /* Allocate another symbol to mark where we switch to Arm mode. */
4011 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
4012 + strlen (CHANGE_TO_ARM
) + 1);
4014 BFD_ASSERT (tmp_name
);
4016 sprintf (tmp_name
, CHANGE_TO_ARM
, name
);
4019 val
= hash_table
->thumb_glue_size
+ 4,
4020 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
4021 tmp_name
, BSF_LOCAL
, s
, val
,
4022 NULL
, TRUE
, FALSE
, &bh
);
4026 s
->size
+= THUMB2ARM_GLUE_SIZE
;
4027 hash_table
->thumb_glue_size
+= THUMB2ARM_GLUE_SIZE
;
4033 /* Allocate space for ARMv4 BX veneers. */
4036 record_arm_bx_glue (struct bfd_link_info
* link_info
, int reg
)
4039 struct elf32_arm_link_hash_table
*globals
;
4041 struct elf_link_hash_entry
*myh
;
4042 struct bfd_link_hash_entry
*bh
;
4045 /* BX PC does not need a veneer. */
4049 globals
= elf32_arm_hash_table (link_info
);
4051 BFD_ASSERT (globals
!= NULL
);
4052 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4054 /* Check if this veneer has already been allocated. */
4055 if (globals
->bx_glue_offset
[reg
])
4058 s
= bfd_get_section_by_name
4059 (globals
->bfd_of_glue_owner
, ARM_BX_GLUE_SECTION_NAME
);
4061 BFD_ASSERT (s
!= NULL
);
4063 /* Add symbol for veneer. */
4064 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (ARM_BX_GLUE_ENTRY_NAME
) + 1);
4066 BFD_ASSERT (tmp_name
);
4068 sprintf (tmp_name
, ARM_BX_GLUE_ENTRY_NAME
, reg
);
4070 myh
= elf_link_hash_lookup
4071 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
4073 BFD_ASSERT (myh
== NULL
);
4076 val
= globals
->bx_glue_size
;
4077 _bfd_generic_link_add_one_symbol (link_info
, globals
->bfd_of_glue_owner
,
4078 tmp_name
, BSF_FUNCTION
| BSF_LOCAL
, s
, val
,
4079 NULL
, TRUE
, FALSE
, &bh
);
4081 myh
= (struct elf_link_hash_entry
*) bh
;
4082 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
4083 myh
->forced_local
= 1;
4085 s
->size
+= ARM_BX_VENEER_SIZE
;
4086 globals
->bx_glue_offset
[reg
] = globals
->bx_glue_size
| 2;
4087 globals
->bx_glue_size
+= ARM_BX_VENEER_SIZE
;
4091 /* Add an entry to the code/data map for section SEC. */
4094 elf32_arm_section_map_add (asection
*sec
, char type
, bfd_vma vma
)
4096 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
4097 unsigned int newidx
;
4099 if (sec_data
->map
== NULL
)
4101 sec_data
->map
= bfd_malloc (sizeof (elf32_arm_section_map
));
4102 sec_data
->mapcount
= 0;
4103 sec_data
->mapsize
= 1;
4106 newidx
= sec_data
->mapcount
++;
4108 if (sec_data
->mapcount
> sec_data
->mapsize
)
4110 sec_data
->mapsize
*= 2;
4111 sec_data
->map
= bfd_realloc_or_free (sec_data
->map
, sec_data
->mapsize
4112 * sizeof (elf32_arm_section_map
));
4117 sec_data
->map
[newidx
].vma
= vma
;
4118 sec_data
->map
[newidx
].type
= type
;
4123 /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
4124 veneers are handled for now. */
4127 record_vfp11_erratum_veneer (struct bfd_link_info
*link_info
,
4128 elf32_vfp11_erratum_list
*branch
,
4130 asection
*branch_sec
,
4131 unsigned int offset
)
4134 struct elf32_arm_link_hash_table
*hash_table
;
4136 struct elf_link_hash_entry
*myh
;
4137 struct bfd_link_hash_entry
*bh
;
4139 struct _arm_elf_section_data
*sec_data
;
4141 elf32_vfp11_erratum_list
*newerr
;
4143 hash_table
= elf32_arm_hash_table (link_info
);
4145 BFD_ASSERT (hash_table
!= NULL
);
4146 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
4148 s
= bfd_get_section_by_name
4149 (hash_table
->bfd_of_glue_owner
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
4151 sec_data
= elf32_arm_section_data (s
);
4153 BFD_ASSERT (s
!= NULL
);
4155 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
4156 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
4158 BFD_ASSERT (tmp_name
);
4160 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
4161 hash_table
->num_vfp11_fixes
);
4163 myh
= elf_link_hash_lookup
4164 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
4166 BFD_ASSERT (myh
== NULL
);
4169 val
= hash_table
->vfp11_erratum_glue_size
;
4170 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
4171 tmp_name
, BSF_FUNCTION
| BSF_LOCAL
, s
, val
,
4172 NULL
, TRUE
, FALSE
, &bh
);
4174 myh
= (struct elf_link_hash_entry
*) bh
;
4175 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
4176 myh
->forced_local
= 1;
4178 /* Link veneer back to calling location. */
4179 errcount
= ++(sec_data
->erratumcount
);
4180 newerr
= bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
4182 newerr
->type
= VFP11_ERRATUM_ARM_VENEER
;
4184 newerr
->u
.v
.branch
= branch
;
4185 newerr
->u
.v
.id
= hash_table
->num_vfp11_fixes
;
4186 branch
->u
.b
.veneer
= newerr
;
4188 newerr
->next
= sec_data
->erratumlist
;
4189 sec_data
->erratumlist
= newerr
;
4191 /* A symbol for the return from the veneer. */
4192 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
4193 hash_table
->num_vfp11_fixes
);
4195 myh
= elf_link_hash_lookup
4196 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
4203 _bfd_generic_link_add_one_symbol (link_info
, branch_bfd
, tmp_name
, BSF_LOCAL
,
4204 branch_sec
, val
, NULL
, TRUE
, FALSE
, &bh
);
4206 myh
= (struct elf_link_hash_entry
*) bh
;
4207 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
4208 myh
->forced_local
= 1;
4212 /* Generate a mapping symbol for the veneer section, and explicitly add an
4213 entry for that symbol to the code/data map for the section. */
4214 if (hash_table
->vfp11_erratum_glue_size
== 0)
4217 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
4218 ever requires this erratum fix. */
4219 _bfd_generic_link_add_one_symbol (link_info
,
4220 hash_table
->bfd_of_glue_owner
, "$a",
4221 BSF_LOCAL
, s
, 0, NULL
,
4224 myh
= (struct elf_link_hash_entry
*) bh
;
4225 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
4226 myh
->forced_local
= 1;
4228 /* The elf32_arm_init_maps function only cares about symbols from input
4229 BFDs. We must make a note of this generated mapping symbol
4230 ourselves so that code byteswapping works properly in
4231 elf32_arm_write_section. */
4232 elf32_arm_section_map_add (s
, 'a', 0);
4235 s
->size
+= VFP11_ERRATUM_VENEER_SIZE
;
4236 hash_table
->vfp11_erratum_glue_size
+= VFP11_ERRATUM_VENEER_SIZE
;
4237 hash_table
->num_vfp11_fixes
++;
4239 /* The offset of the veneer. */
4243 /* Add the glue sections to ABFD. This function is called from the
4244 linker scripts in ld/emultempl/{armelf}.em. */
4247 bfd_elf32_arm_add_glue_sections_to_bfd (bfd
*abfd
,
4248 struct bfd_link_info
*info
)
4253 /* If we are only performing a partial
4254 link do not bother adding the glue. */
4255 if (info
->relocatable
)
4258 /* linker stubs don't need glue */
4259 if (!strcmp (abfd
->filename
, "linker stubs"))
4262 sec
= bfd_get_section_by_name (abfd
, ARM2THUMB_GLUE_SECTION_NAME
);
4266 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
4267 will prevent elf_link_input_bfd() from processing the contents
4269 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4270 | SEC_CODE
| SEC_READONLY
);
4272 sec
= bfd_make_section_with_flags (abfd
,
4273 ARM2THUMB_GLUE_SECTION_NAME
,
4277 || !bfd_set_section_alignment (abfd
, sec
, 2))
4280 /* Set the gc mark to prevent the section from being removed by garbage
4281 collection, despite the fact that no relocs refer to this section. */
4285 sec
= bfd_get_section_by_name (abfd
, THUMB2ARM_GLUE_SECTION_NAME
);
4289 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4290 | SEC_CODE
| SEC_READONLY
);
4292 sec
= bfd_make_section_with_flags (abfd
,
4293 THUMB2ARM_GLUE_SECTION_NAME
,
4297 || !bfd_set_section_alignment (abfd
, sec
, 2))
4303 sec
= bfd_get_section_by_name (abfd
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
4307 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4308 | SEC_CODE
| SEC_READONLY
);
4310 sec
= bfd_make_section_with_flags (abfd
,
4311 VFP11_ERRATUM_VENEER_SECTION_NAME
,
4315 || !bfd_set_section_alignment (abfd
, sec
, 2))
4321 sec
= bfd_get_section_by_name (abfd
, ARM_BX_GLUE_SECTION_NAME
);
4325 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4326 | SEC_CODE
| SEC_READONLY
);
4328 sec
= bfd_make_section_with_flags (abfd
,
4329 ARM_BX_GLUE_SECTION_NAME
,
4333 || !bfd_set_section_alignment (abfd
, sec
, 2))
4342 /* Select a BFD to be used to hold the sections used by the glue code.
4343 This function is called from the linker scripts in ld/emultempl/
4347 bfd_elf32_arm_get_bfd_for_interworking (bfd
*abfd
, struct bfd_link_info
*info
)
4349 struct elf32_arm_link_hash_table
*globals
;
4351 /* If we are only performing a partial link
4352 do not bother getting a bfd to hold the glue. */
4353 if (info
->relocatable
)
4356 /* Make sure we don't attach the glue sections to a dynamic object. */
4357 BFD_ASSERT (!(abfd
->flags
& DYNAMIC
));
4359 globals
= elf32_arm_hash_table (info
);
4361 BFD_ASSERT (globals
!= NULL
);
4363 if (globals
->bfd_of_glue_owner
!= NULL
)
4366 /* Save the bfd for later use. */
4367 globals
->bfd_of_glue_owner
= abfd
;
4373 check_use_blx (struct elf32_arm_link_hash_table
*globals
)
4375 if (bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
4377 globals
->use_blx
= 1;
4381 bfd_elf32_arm_process_before_allocation (bfd
*abfd
,
4382 struct bfd_link_info
*link_info
)
4384 Elf_Internal_Shdr
*symtab_hdr
;
4385 Elf_Internal_Rela
*internal_relocs
= NULL
;
4386 Elf_Internal_Rela
*irel
, *irelend
;
4387 bfd_byte
*contents
= NULL
;
4390 struct elf32_arm_link_hash_table
*globals
;
4392 /* If we are only performing a partial link do not bother
4393 to construct any glue. */
4394 if (link_info
->relocatable
)
4397 /* Here we have a bfd that is to be included on the link. We have a
4398 hook to do reloc rummaging, before section sizes are nailed down. */
4399 globals
= elf32_arm_hash_table (link_info
);
4401 BFD_ASSERT (globals
!= NULL
);
4403 check_use_blx (globals
);
4405 if (globals
->byteswap_code
&& !bfd_big_endian (abfd
))
4407 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
4412 /* PR 5398: If we have not decided to include any loadable sections in
4413 the output then we will not have a glue owner bfd. This is OK, it
4414 just means that there is nothing else for us to do here. */
4415 if (globals
->bfd_of_glue_owner
== NULL
)
4418 /* Rummage around all the relocs and map the glue vectors. */
4419 sec
= abfd
->sections
;
4424 for (; sec
!= NULL
; sec
= sec
->next
)
4426 if (sec
->reloc_count
== 0)
4429 if ((sec
->flags
& SEC_EXCLUDE
) != 0)
4432 symtab_hdr
= & elf_symtab_hdr (abfd
);
4434 /* Load the relocs. */
4436 = _bfd_elf_link_read_relocs (abfd
, sec
, NULL
, NULL
, FALSE
);
4438 if (internal_relocs
== NULL
)
4441 irelend
= internal_relocs
+ sec
->reloc_count
;
4442 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
4445 unsigned long r_index
;
4447 struct elf_link_hash_entry
*h
;
4449 r_type
= ELF32_R_TYPE (irel
->r_info
);
4450 r_index
= ELF32_R_SYM (irel
->r_info
);
4452 /* These are the only relocation types we care about. */
4453 if ( r_type
!= R_ARM_PC24
4454 && r_type
!= R_ARM_PLT32
4455 && r_type
!= R_ARM_JUMP24
4456 && r_type
!= R_ARM_THM_JUMP24
4457 && (r_type
!= R_ARM_V4BX
|| globals
->fix_v4bx
< 2))
4460 /* Get the section contents if we haven't done so already. */
4461 if (contents
== NULL
)
4463 /* Get cached copy if it exists. */
4464 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
4465 contents
= elf_section_data (sec
)->this_hdr
.contents
;
4468 /* Go get them off disk. */
4469 if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
4474 if (r_type
== R_ARM_V4BX
)
4478 reg
= bfd_get_32 (abfd
, contents
+ irel
->r_offset
) & 0xf;
4479 record_arm_bx_glue (link_info
, reg
);
4483 /* If the relocation is not against a symbol it cannot concern us. */
4486 /* We don't care about local symbols. */
4487 if (r_index
< symtab_hdr
->sh_info
)
4490 /* This is an external symbol. */
4491 r_index
-= symtab_hdr
->sh_info
;
4492 h
= (struct elf_link_hash_entry
*)
4493 elf_sym_hashes (abfd
)[r_index
];
4495 /* If the relocation is against a static symbol it must be within
4496 the current section and so cannot be a cross ARM/Thumb relocation. */
4500 /* If the call will go through a PLT entry then we do not need
4502 if (globals
->splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
4510 /* This one is a call from arm code. We need to look up
4511 the target of the call. If it is a thumb target, we
4513 if (ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
4514 && !(r_type
== R_ARM_CALL
&& globals
->use_blx
))
4515 record_arm_to_thumb_glue (link_info
, h
);
4518 case R_ARM_THM_JUMP24
:
4519 /* This one is a call from thumb code. We look
4520 up the target of the call. If it is not a thumb
4521 target, we insert glue. */
4522 if (ELF_ST_TYPE (h
->type
) != STT_ARM_TFUNC
4523 && !(globals
->use_blx
&& r_type
== R_ARM_THM_CALL
)
4524 && h
->root
.type
!= bfd_link_hash_undefweak
)
4525 record_thumb_to_arm_glue (link_info
, h
);
4533 if (contents
!= NULL
4534 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
4538 if (internal_relocs
!= NULL
4539 && elf_section_data (sec
)->relocs
!= internal_relocs
)
4540 free (internal_relocs
);
4541 internal_relocs
= NULL
;
4547 if (contents
!= NULL
4548 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
4550 if (internal_relocs
!= NULL
4551 && elf_section_data (sec
)->relocs
!= internal_relocs
)
4552 free (internal_relocs
);
4559 /* Initialise maps of ARM/Thumb/data for input BFDs. */
4562 bfd_elf32_arm_init_maps (bfd
*abfd
)
4564 Elf_Internal_Sym
*isymbuf
;
4565 Elf_Internal_Shdr
*hdr
;
4566 unsigned int i
, localsyms
;
4568 if ((abfd
->flags
& DYNAMIC
) != 0)
4571 hdr
= & elf_symtab_hdr (abfd
);
4572 localsyms
= hdr
->sh_info
;
4574 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4575 should contain the number of local symbols, which should come before any
4576 global symbols. Mapping symbols are always local. */
4577 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, localsyms
, 0, NULL
, NULL
,
4580 /* No internal symbols read? Skip this BFD. */
4581 if (isymbuf
== NULL
)
4584 for (i
= 0; i
< localsyms
; i
++)
4586 Elf_Internal_Sym
*isym
= &isymbuf
[i
];
4587 asection
*sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4591 && ELF_ST_BIND (isym
->st_info
) == STB_LOCAL
)
4593 name
= bfd_elf_string_from_elf_section (abfd
,
4594 hdr
->sh_link
, isym
->st_name
);
4596 if (bfd_is_arm_special_symbol_name (name
,
4597 BFD_ARM_SPECIAL_SYM_TYPE_MAP
))
4598 elf32_arm_section_map_add (sec
, name
[1], isym
->st_value
);
4605 bfd_elf32_arm_set_vfp11_fix (bfd
*obfd
, struct bfd_link_info
*link_info
)
4607 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
4608 obj_attribute
*out_attr
= elf_known_obj_attributes_proc (obfd
);
4610 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
4611 if (out_attr
[Tag_CPU_arch
].i
>= TAG_CPU_ARCH_V7
)
4613 switch (globals
->vfp11_fix
)
4615 case BFD_ARM_VFP11_FIX_DEFAULT
:
4616 case BFD_ARM_VFP11_FIX_NONE
:
4617 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
4621 /* Give a warning, but do as the user requests anyway. */
4622 (*_bfd_error_handler
) (_("%B: warning: selected VFP11 erratum "
4623 "workaround is not necessary for target architecture"), obfd
);
4626 else if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_DEFAULT
)
4627 /* For earlier architectures, we might need the workaround, but do not
4628 enable it by default. If users is running with broken hardware, they
4629 must enable the erratum fix explicitly. */
4630 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
4634 enum bfd_arm_vfp11_pipe
4642 /* Return a VFP register number. This is encoded as RX:X for single-precision
4643 registers, or X:RX for double-precision registers, where RX is the group of
4644 four bits in the instruction encoding and X is the single extension bit.
4645 RX and X fields are specified using their lowest (starting) bit. The return
4648 0...31: single-precision registers s0...s31
4649 32...63: double-precision registers d0...d31.
4651 Although X should be zero for VFP11 (encoding d0...d15 only), we might
4652 encounter VFP3 instructions, so we allow the full range for DP registers. */
4655 bfd_arm_vfp11_regno (unsigned int insn
, bfd_boolean is_double
, unsigned int rx
,
4659 return (((insn
>> rx
) & 0xf) | (((insn
>> x
) & 1) << 4)) + 32;
4661 return (((insn
>> rx
) & 0xf) << 1) | ((insn
>> x
) & 1);
4664 /* Set bits in *WMASK according to a register number REG as encoded by
4665 bfd_arm_vfp11_regno(). Ignore d16-d31. */
4668 bfd_arm_vfp11_write_mask (unsigned int *wmask
, unsigned int reg
)
4673 *wmask
|= 3 << ((reg
- 32) * 2);
4676 /* Return TRUE if WMASK overwrites anything in REGS. */
4679 bfd_arm_vfp11_antidependency (unsigned int wmask
, int *regs
, int numregs
)
4683 for (i
= 0; i
< numregs
; i
++)
4685 unsigned int reg
= regs
[i
];
4687 if (reg
< 32 && (wmask
& (1 << reg
)) != 0)
4695 if ((wmask
& (3 << (reg
* 2))) != 0)
4702 /* In this function, we're interested in two things: finding input registers
4703 for VFP data-processing instructions, and finding the set of registers which
4704 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
4705 hold the written set, so FLDM etc. are easy to deal with (we're only
4706 interested in 32 SP registers or 16 dp registers, due to the VFP version
4707 implemented by the chip in question). DP registers are marked by setting
4708 both SP registers in the write mask). */
4710 static enum bfd_arm_vfp11_pipe
4711 bfd_arm_vfp11_insn_decode (unsigned int insn
, unsigned int *destmask
, int *regs
,
4714 enum bfd_arm_vfp11_pipe pipe
= VFP11_BAD
;
4715 bfd_boolean is_double
= ((insn
& 0xf00) == 0xb00) ? 1 : 0;
4717 if ((insn
& 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
4720 unsigned int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
4721 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
4723 pqrs
= ((insn
& 0x00800000) >> 20)
4724 | ((insn
& 0x00300000) >> 19)
4725 | ((insn
& 0x00000040) >> 6);
4729 case 0: /* fmac[sd]. */
4730 case 1: /* fnmac[sd]. */
4731 case 2: /* fmsc[sd]. */
4732 case 3: /* fnmsc[sd]. */
4734 bfd_arm_vfp11_write_mask (destmask
, fd
);
4736 regs
[1] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
4741 case 4: /* fmul[sd]. */
4742 case 5: /* fnmul[sd]. */
4743 case 6: /* fadd[sd]. */
4744 case 7: /* fsub[sd]. */
4748 case 8: /* fdiv[sd]. */
4751 bfd_arm_vfp11_write_mask (destmask
, fd
);
4752 regs
[0] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
4757 case 15: /* extended opcode. */
4759 unsigned int extn
= ((insn
>> 15) & 0x1e)
4760 | ((insn
>> 7) & 1);
4764 case 0: /* fcpy[sd]. */
4765 case 1: /* fabs[sd]. */
4766 case 2: /* fneg[sd]. */
4767 case 8: /* fcmp[sd]. */
4768 case 9: /* fcmpe[sd]. */
4769 case 10: /* fcmpz[sd]. */
4770 case 11: /* fcmpez[sd]. */
4771 case 16: /* fuito[sd]. */
4772 case 17: /* fsito[sd]. */
4773 case 24: /* ftoui[sd]. */
4774 case 25: /* ftouiz[sd]. */
4775 case 26: /* ftosi[sd]. */
4776 case 27: /* ftosiz[sd]. */
4777 /* These instructions will not bounce due to underflow. */
4782 case 3: /* fsqrt[sd]. */
4783 /* fsqrt cannot underflow, but it can (perhaps) overwrite
4784 registers to cause the erratum in previous instructions. */
4785 bfd_arm_vfp11_write_mask (destmask
, fd
);
4789 case 15: /* fcvt{ds,sd}. */
4793 bfd_arm_vfp11_write_mask (destmask
, fd
);
4795 /* Only FCVTSD can underflow. */
4796 if ((insn
& 0x100) != 0)
4815 /* Two-register transfer. */
4816 else if ((insn
& 0x0fe00ed0) == 0x0c400a10)
4818 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
4820 if ((insn
& 0x100000) == 0)
4823 bfd_arm_vfp11_write_mask (destmask
, fm
);
4826 bfd_arm_vfp11_write_mask (destmask
, fm
);
4827 bfd_arm_vfp11_write_mask (destmask
, fm
+ 1);
4833 else if ((insn
& 0x0e100e00) == 0x0c100a00) /* A load insn. */
4835 int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
4836 unsigned int puw
= ((insn
>> 21) & 0x1) | (((insn
>> 23) & 3) << 1);
4840 case 0: /* Two-reg transfer. We should catch these above. */
4843 case 2: /* fldm[sdx]. */
4847 unsigned int i
, offset
= insn
& 0xff;
4852 for (i
= fd
; i
< fd
+ offset
; i
++)
4853 bfd_arm_vfp11_write_mask (destmask
, i
);
4857 case 4: /* fld[sd]. */
4859 bfd_arm_vfp11_write_mask (destmask
, fd
);
4868 /* Single-register transfer. Note L==0. */
4869 else if ((insn
& 0x0f100e10) == 0x0e000a10)
4871 unsigned int opcode
= (insn
>> 21) & 7;
4872 unsigned int fn
= bfd_arm_vfp11_regno (insn
, is_double
, 16, 7);
4876 case 0: /* fmsr/fmdlr. */
4877 case 1: /* fmdhr. */
4878 /* Mark fmdhr and fmdlr as writing to the whole of the DP
4879 destination register. I don't know if this is exactly right,
4880 but it is the conservative choice. */
4881 bfd_arm_vfp11_write_mask (destmask
, fn
);
4895 static int elf32_arm_compare_mapping (const void * a
, const void * b
);
4898 /* Look for potentially-troublesome code sequences which might trigger the
4899 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
4900 (available from ARM) for details of the erratum. A short version is
4901 described in ld.texinfo. */
4904 bfd_elf32_arm_vfp11_erratum_scan (bfd
*abfd
, struct bfd_link_info
*link_info
)
4907 bfd_byte
*contents
= NULL
;
4909 int regs
[3], numregs
= 0;
4910 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
4911 int use_vector
= (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_VECTOR
);
4913 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
4914 The states transition as follows:
4916 0 -> 1 (vector) or 0 -> 2 (scalar)
4917 A VFP FMAC-pipeline instruction has been seen. Fill
4918 regs[0]..regs[numregs-1] with its input operands. Remember this
4919 instruction in 'first_fmac'.
4922 Any instruction, except for a VFP instruction which overwrites
4927 A VFP instruction has been seen which overwrites any of regs[*].
4928 We must make a veneer! Reset state to 0 before examining next
4932 If we fail to match anything in state 2, reset to state 0 and reset
4933 the instruction pointer to the instruction after 'first_fmac'.
4935 If the VFP11 vector mode is in use, there must be at least two unrelated
4936 instructions between anti-dependent VFP11 instructions to properly avoid
4937 triggering the erratum, hence the use of the extra state 1. */
4939 /* If we are only performing a partial link do not bother
4940 to construct any glue. */
4941 if (link_info
->relocatable
)
4944 /* Skip if this bfd does not correspond to an ELF image. */
4945 if (! is_arm_elf (abfd
))
4948 /* We should have chosen a fix type by the time we get here. */
4949 BFD_ASSERT (globals
->vfp11_fix
!= BFD_ARM_VFP11_FIX_DEFAULT
);
4951 if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_NONE
)
4954 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4956 unsigned int i
, span
, first_fmac
= 0, veneer_of_insn
= 0;
4957 struct _arm_elf_section_data
*sec_data
;
4959 /* If we don't have executable progbits, we're not interested in this
4960 section. Also skip if section is to be excluded. */
4961 if (elf_section_type (sec
) != SHT_PROGBITS
4962 || (elf_section_flags (sec
) & SHF_EXECINSTR
) == 0
4963 || (sec
->flags
& SEC_EXCLUDE
) != 0
4964 || strcmp (sec
->name
, VFP11_ERRATUM_VENEER_SECTION_NAME
) == 0)
4967 sec_data
= elf32_arm_section_data (sec
);
4969 if (sec_data
->mapcount
== 0)
4972 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
4973 contents
= elf_section_data (sec
)->this_hdr
.contents
;
4974 else if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
4977 qsort (sec_data
->map
, sec_data
->mapcount
, sizeof (elf32_arm_section_map
),
4978 elf32_arm_compare_mapping
);
4980 for (span
= 0; span
< sec_data
->mapcount
; span
++)
4982 unsigned int span_start
= sec_data
->map
[span
].vma
;
4983 unsigned int span_end
= (span
== sec_data
->mapcount
- 1)
4984 ? sec
->size
: sec_data
->map
[span
+ 1].vma
;
4985 char span_type
= sec_data
->map
[span
].type
;
4987 /* FIXME: Only ARM mode is supported at present. We may need to
4988 support Thumb-2 mode also at some point. */
4989 if (span_type
!= 'a')
4992 for (i
= span_start
; i
< span_end
;)
4994 unsigned int next_i
= i
+ 4;
4995 unsigned int insn
= bfd_big_endian (abfd
)
4996 ? (contents
[i
] << 24)
4997 | (contents
[i
+ 1] << 16)
4998 | (contents
[i
+ 2] << 8)
5000 : (contents
[i
+ 3] << 24)
5001 | (contents
[i
+ 2] << 16)
5002 | (contents
[i
+ 1] << 8)
5004 unsigned int writemask
= 0;
5005 enum bfd_arm_vfp11_pipe pipe
;
5010 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
, regs
,
5012 /* I'm assuming the VFP11 erratum can trigger with denorm
5013 operands on either the FMAC or the DS pipeline. This might
5014 lead to slightly overenthusiastic veneer insertion. */
5015 if (pipe
== VFP11_FMAC
|| pipe
== VFP11_DS
)
5017 state
= use_vector
? 1 : 2;
5019 veneer_of_insn
= insn
;
5025 int other_regs
[3], other_numregs
;
5026 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
5029 if (pipe
!= VFP11_BAD
5030 && bfd_arm_vfp11_antidependency (writemask
, regs
,
5040 int other_regs
[3], other_numregs
;
5041 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
5044 if (pipe
!= VFP11_BAD
5045 && bfd_arm_vfp11_antidependency (writemask
, regs
,
5051 next_i
= first_fmac
+ 4;
5057 abort (); /* Should be unreachable. */
5062 elf32_vfp11_erratum_list
*newerr
5063 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
5066 errcount
= ++(elf32_arm_section_data (sec
)->erratumcount
);
5068 newerr
->u
.b
.vfp_insn
= veneer_of_insn
;
5073 newerr
->type
= VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
;
5080 record_vfp11_erratum_veneer (link_info
, newerr
, abfd
, sec
,
5085 newerr
->next
= sec_data
->erratumlist
;
5086 sec_data
->erratumlist
= newerr
;
5095 if (contents
!= NULL
5096 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
5104 if (contents
!= NULL
5105 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
5111 /* Find virtual-memory addresses for VFP11 erratum veneers and return locations
5112 after sections have been laid out, using specially-named symbols. */
5115 bfd_elf32_arm_vfp11_fix_veneer_locations (bfd
*abfd
,
5116 struct bfd_link_info
*link_info
)
5119 struct elf32_arm_link_hash_table
*globals
;
5122 if (link_info
->relocatable
)
5125 /* Skip if this bfd does not correspond to an ELF image. */
5126 if (! is_arm_elf (abfd
))
5129 globals
= elf32_arm_hash_table (link_info
);
5131 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
5132 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
5134 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5136 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
5137 elf32_vfp11_erratum_list
*errnode
= sec_data
->erratumlist
;
5139 for (; errnode
!= NULL
; errnode
= errnode
->next
)
5141 struct elf_link_hash_entry
*myh
;
5144 switch (errnode
->type
)
5146 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
5147 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
:
5148 /* Find veneer symbol. */
5149 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
5150 errnode
->u
.b
.veneer
->u
.v
.id
);
5152 myh
= elf_link_hash_lookup
5153 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
5156 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
5157 "`%s'"), abfd
, tmp_name
);
5159 vma
= myh
->root
.u
.def
.section
->output_section
->vma
5160 + myh
->root
.u
.def
.section
->output_offset
5161 + myh
->root
.u
.def
.value
;
5163 errnode
->u
.b
.veneer
->vma
= vma
;
5166 case VFP11_ERRATUM_ARM_VENEER
:
5167 case VFP11_ERRATUM_THUMB_VENEER
:
5168 /* Find return location. */
5169 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
5172 myh
= elf_link_hash_lookup
5173 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
5176 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
5177 "`%s'"), abfd
, tmp_name
);
5179 vma
= myh
->root
.u
.def
.section
->output_section
->vma
5180 + myh
->root
.u
.def
.section
->output_offset
5181 + myh
->root
.u
.def
.value
;
5183 errnode
->u
.v
.branch
->vma
= vma
;
5196 /* Set target relocation values needed during linking. */
5199 bfd_elf32_arm_set_target_relocs (struct bfd
*output_bfd
,
5200 struct bfd_link_info
*link_info
,
5202 char * target2_type
,
5205 bfd_arm_vfp11_fix vfp11_fix
,
5206 int no_enum_warn
, int pic_veneer
)
5208 struct elf32_arm_link_hash_table
*globals
;
5210 globals
= elf32_arm_hash_table (link_info
);
5212 globals
->target1_is_rel
= target1_is_rel
;
5213 if (strcmp (target2_type
, "rel") == 0)
5214 globals
->target2_reloc
= R_ARM_REL32
;
5215 else if (strcmp (target2_type
, "abs") == 0)
5216 globals
->target2_reloc
= R_ARM_ABS32
;
5217 else if (strcmp (target2_type
, "got-rel") == 0)
5218 globals
->target2_reloc
= R_ARM_GOT_PREL
;
5221 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
5224 globals
->fix_v4bx
= fix_v4bx
;
5225 globals
->use_blx
|= use_blx
;
5226 globals
->vfp11_fix
= vfp11_fix
;
5227 globals
->pic_veneer
= pic_veneer
;
5229 BFD_ASSERT (is_arm_elf (output_bfd
));
5230 elf_arm_tdata (output_bfd
)->no_enum_size_warning
= no_enum_warn
;
5233 /* Replace the target offset of a Thumb bl or b.w instruction. */
5236 insert_thumb_branch (bfd
*abfd
, long int offset
, bfd_byte
*insn
)
5242 BFD_ASSERT ((offset
& 1) == 0);
5244 upper
= bfd_get_16 (abfd
, insn
);
5245 lower
= bfd_get_16 (abfd
, insn
+ 2);
5246 reloc_sign
= (offset
< 0) ? 1 : 0;
5247 upper
= (upper
& ~(bfd_vma
) 0x7ff)
5248 | ((offset
>> 12) & 0x3ff)
5249 | (reloc_sign
<< 10);
5250 lower
= (lower
& ~(bfd_vma
) 0x2fff)
5251 | (((!((offset
>> 23) & 1)) ^ reloc_sign
) << 13)
5252 | (((!((offset
>> 22) & 1)) ^ reloc_sign
) << 11)
5253 | ((offset
>> 1) & 0x7ff);
5254 bfd_put_16 (abfd
, upper
, insn
);
5255 bfd_put_16 (abfd
, lower
, insn
+ 2);
5258 /* Thumb code calling an ARM function. */
5261 elf32_thumb_to_arm_stub (struct bfd_link_info
* info
,
5265 asection
* input_section
,
5266 bfd_byte
* hit_data
,
5269 bfd_signed_vma addend
,
5271 char **error_message
)
5275 long int ret_offset
;
5276 struct elf_link_hash_entry
* myh
;
5277 struct elf32_arm_link_hash_table
* globals
;
5279 myh
= find_thumb_glue (info
, name
, error_message
);
5283 globals
= elf32_arm_hash_table (info
);
5285 BFD_ASSERT (globals
!= NULL
);
5286 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5288 my_offset
= myh
->root
.u
.def
.value
;
5290 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5291 THUMB2ARM_GLUE_SECTION_NAME
);
5293 BFD_ASSERT (s
!= NULL
);
5294 BFD_ASSERT (s
->contents
!= NULL
);
5295 BFD_ASSERT (s
->output_section
!= NULL
);
5297 if ((my_offset
& 0x01) == 0x01)
5300 && sym_sec
->owner
!= NULL
5301 && !INTERWORK_FLAG (sym_sec
->owner
))
5303 (*_bfd_error_handler
)
5304 (_("%B(%s): warning: interworking not enabled.\n"
5305 " first occurrence: %B: thumb call to arm"),
5306 sym_sec
->owner
, input_bfd
, name
);
5312 myh
->root
.u
.def
.value
= my_offset
;
5314 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a1_bx_pc_insn
,
5315 s
->contents
+ my_offset
);
5317 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a2_noop_insn
,
5318 s
->contents
+ my_offset
+ 2);
5321 /* Address of destination of the stub. */
5322 ((bfd_signed_vma
) val
)
5324 /* Offset from the start of the current section
5325 to the start of the stubs. */
5327 /* Offset of the start of this stub from the start of the stubs. */
5329 /* Address of the start of the current section. */
5330 + s
->output_section
->vma
)
5331 /* The branch instruction is 4 bytes into the stub. */
5333 /* ARM branches work from the pc of the instruction + 8. */
5336 put_arm_insn (globals
, output_bfd
,
5337 (bfd_vma
) t2a3_b_insn
| ((ret_offset
>> 2) & 0x00FFFFFF),
5338 s
->contents
+ my_offset
+ 4);
5341 BFD_ASSERT (my_offset
<= globals
->thumb_glue_size
);
5343 /* Now go back and fix up the original BL insn to point to here. */
5345 /* Address of where the stub is located. */
5346 (s
->output_section
->vma
+ s
->output_offset
+ my_offset
)
5347 /* Address of where the BL is located. */
5348 - (input_section
->output_section
->vma
+ input_section
->output_offset
5350 /* Addend in the relocation. */
5352 /* Biassing for PC-relative addressing. */
5355 insert_thumb_branch (input_bfd
, ret_offset
, hit_data
- input_section
->vma
);
5360 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
5362 static struct elf_link_hash_entry
*
5363 elf32_arm_create_thumb_stub (struct bfd_link_info
* info
,
5370 char **error_message
)
5373 long int ret_offset
;
5374 struct elf_link_hash_entry
* myh
;
5375 struct elf32_arm_link_hash_table
* globals
;
5377 myh
= find_arm_glue (info
, name
, error_message
);
5381 globals
= elf32_arm_hash_table (info
);
5383 BFD_ASSERT (globals
!= NULL
);
5384 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5386 my_offset
= myh
->root
.u
.def
.value
;
5388 if ((my_offset
& 0x01) == 0x01)
5391 && sym_sec
->owner
!= NULL
5392 && !INTERWORK_FLAG (sym_sec
->owner
))
5394 (*_bfd_error_handler
)
5395 (_("%B(%s): warning: interworking not enabled.\n"
5396 " first occurrence: %B: arm call to thumb"),
5397 sym_sec
->owner
, input_bfd
, name
);
5401 myh
->root
.u
.def
.value
= my_offset
;
5403 if (info
->shared
|| globals
->root
.is_relocatable_executable
5404 || globals
->pic_veneer
)
5406 /* For relocatable objects we can't use absolute addresses,
5407 so construct the address from a relative offset. */
5408 /* TODO: If the offset is small it's probably worth
5409 constructing the address with adds. */
5410 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1p_ldr_insn
,
5411 s
->contents
+ my_offset
);
5412 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2p_add_pc_insn
,
5413 s
->contents
+ my_offset
+ 4);
5414 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t3p_bx_r12_insn
,
5415 s
->contents
+ my_offset
+ 8);
5416 /* Adjust the offset by 4 for the position of the add,
5417 and 8 for the pipeline offset. */
5418 ret_offset
= (val
- (s
->output_offset
5419 + s
->output_section
->vma
5422 bfd_put_32 (output_bfd
, ret_offset
,
5423 s
->contents
+ my_offset
+ 12);
5425 else if (globals
->use_blx
)
5427 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1v5_ldr_insn
,
5428 s
->contents
+ my_offset
);
5430 /* It's a thumb address. Add the low order bit. */
5431 bfd_put_32 (output_bfd
, val
| a2t2v5_func_addr_insn
,
5432 s
->contents
+ my_offset
+ 4);
5436 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1_ldr_insn
,
5437 s
->contents
+ my_offset
);
5439 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2_bx_r12_insn
,
5440 s
->contents
+ my_offset
+ 4);
5442 /* It's a thumb address. Add the low order bit. */
5443 bfd_put_32 (output_bfd
, val
| a2t3_func_addr_insn
,
5444 s
->contents
+ my_offset
+ 8);
5448 BFD_ASSERT (my_offset
<= globals
->arm_glue_size
);
5453 /* Arm code calling a Thumb function. */
5456 elf32_arm_to_thumb_stub (struct bfd_link_info
* info
,
5460 asection
* input_section
,
5461 bfd_byte
* hit_data
,
5464 bfd_signed_vma addend
,
5466 char **error_message
)
5468 unsigned long int tmp
;
5471 long int ret_offset
;
5472 struct elf_link_hash_entry
* myh
;
5473 struct elf32_arm_link_hash_table
* globals
;
5475 globals
= elf32_arm_hash_table (info
);
5477 BFD_ASSERT (globals
!= NULL
);
5478 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5480 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5481 ARM2THUMB_GLUE_SECTION_NAME
);
5482 BFD_ASSERT (s
!= NULL
);
5483 BFD_ASSERT (s
->contents
!= NULL
);
5484 BFD_ASSERT (s
->output_section
!= NULL
);
5486 myh
= elf32_arm_create_thumb_stub (info
, name
, input_bfd
, output_bfd
,
5487 sym_sec
, val
, s
, error_message
);
5491 my_offset
= myh
->root
.u
.def
.value
;
5492 tmp
= bfd_get_32 (input_bfd
, hit_data
);
5493 tmp
= tmp
& 0xFF000000;
5495 /* Somehow these are both 4 too far, so subtract 8. */
5496 ret_offset
= (s
->output_offset
5498 + s
->output_section
->vma
5499 - (input_section
->output_offset
5500 + input_section
->output_section
->vma
5504 tmp
= tmp
| ((ret_offset
>> 2) & 0x00FFFFFF);
5506 bfd_put_32 (output_bfd
, (bfd_vma
) tmp
, hit_data
- input_section
->vma
);
5511 /* Populate Arm stub for an exported Thumb function. */
5514 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry
*h
, void * inf
)
5516 struct bfd_link_info
* info
= (struct bfd_link_info
*) inf
;
5518 struct elf_link_hash_entry
* myh
;
5519 struct elf32_arm_link_hash_entry
*eh
;
5520 struct elf32_arm_link_hash_table
* globals
;
5523 char *error_message
;
5525 eh
= elf32_arm_hash_entry (h
);
5526 /* Allocate stubs for exported Thumb functions on v4t. */
5527 if (eh
->export_glue
== NULL
)
5530 globals
= elf32_arm_hash_table (info
);
5532 BFD_ASSERT (globals
!= NULL
);
5533 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5535 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5536 ARM2THUMB_GLUE_SECTION_NAME
);
5537 BFD_ASSERT (s
!= NULL
);
5538 BFD_ASSERT (s
->contents
!= NULL
);
5539 BFD_ASSERT (s
->output_section
!= NULL
);
5541 sec
= eh
->export_glue
->root
.u
.def
.section
;
5543 BFD_ASSERT (sec
->output_section
!= NULL
);
5545 val
= eh
->export_glue
->root
.u
.def
.value
+ sec
->output_offset
5546 + sec
->output_section
->vma
;
5547 myh
= elf32_arm_create_thumb_stub (info
, h
->root
.root
.string
,
5548 h
->root
.u
.def
.section
->owner
,
5549 globals
->obfd
, sec
, val
, s
,
5555 /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */
5558 elf32_arm_bx_glue (struct bfd_link_info
* info
, int reg
)
5563 struct elf32_arm_link_hash_table
*globals
;
5565 globals
= elf32_arm_hash_table (info
);
5567 BFD_ASSERT (globals
!= NULL
);
5568 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5570 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5571 ARM_BX_GLUE_SECTION_NAME
);
5572 BFD_ASSERT (s
!= NULL
);
5573 BFD_ASSERT (s
->contents
!= NULL
);
5574 BFD_ASSERT (s
->output_section
!= NULL
);
5576 BFD_ASSERT (globals
->bx_glue_offset
[reg
] & 2);
5578 glue_addr
= globals
->bx_glue_offset
[reg
] & ~(bfd_vma
)3;
5580 if ((globals
->bx_glue_offset
[reg
] & 1) == 0)
5582 p
= s
->contents
+ glue_addr
;
5583 bfd_put_32 (globals
->obfd
, armbx1_tst_insn
+ (reg
<< 16), p
);
5584 bfd_put_32 (globals
->obfd
, armbx2_moveq_insn
+ reg
, p
+ 4);
5585 bfd_put_32 (globals
->obfd
, armbx3_bx_insn
+ reg
, p
+ 8);
5586 globals
->bx_glue_offset
[reg
] |= 1;
5589 return glue_addr
+ s
->output_section
->vma
+ s
->output_offset
;
5592 /* Generate Arm stubs for exported Thumb symbols. */
5594 elf32_arm_begin_write_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
5595 struct bfd_link_info
*link_info
)
5597 struct elf32_arm_link_hash_table
* globals
;
5602 globals
= elf32_arm_hash_table (link_info
);
5603 /* If blx is available then exported Thumb symbols are OK and there is
5605 if (globals
->use_blx
)
5608 elf_link_hash_traverse (&globals
->root
, elf32_arm_to_thumb_export_stub
,
5612 /* Some relocations map to different relocations depending on the
5613 target. Return the real relocation. */
5615 arm_real_reloc_type (struct elf32_arm_link_hash_table
* globals
,
5621 if (globals
->target1_is_rel
)
5627 return globals
->target2_reloc
;
5634 /* Return the base VMA address which should be subtracted from real addresses
5635 when resolving @dtpoff relocation.
5636 This is PT_TLS segment p_vaddr. */
5639 dtpoff_base (struct bfd_link_info
*info
)
5641 /* If tls_sec is NULL, we should have signalled an error already. */
5642 if (elf_hash_table (info
)->tls_sec
== NULL
)
5644 return elf_hash_table (info
)->tls_sec
->vma
;
5647 /* Return the relocation value for @tpoff relocation
5648 if STT_TLS virtual address is ADDRESS. */
5651 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
5653 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
5656 /* If tls_sec is NULL, we should have signalled an error already. */
5657 if (htab
->tls_sec
== NULL
)
5659 base
= align_power ((bfd_vma
) TCB_SIZE
, htab
->tls_sec
->alignment_power
);
5660 return address
- htab
->tls_sec
->vma
+ base
;
5663 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
5664 VALUE is the relocation value. */
5666 static bfd_reloc_status_type
5667 elf32_arm_abs12_reloc (bfd
*abfd
, void *data
, bfd_vma value
)
5670 return bfd_reloc_overflow
;
5672 value
|= bfd_get_32 (abfd
, data
) & 0xfffff000;
5673 bfd_put_32 (abfd
, value
, data
);
5674 return bfd_reloc_ok
;
5677 /* For a given value of n, calculate the value of G_n as required to
5678 deal with group relocations. We return it in the form of an
5679 encoded constant-and-rotation, together with the final residual. If n is
5680 specified as less than zero, then final_residual is filled with the
5681 input value and no further action is performed. */
5684 calculate_group_reloc_mask (bfd_vma value
, int n
, bfd_vma
*final_residual
)
5688 bfd_vma encoded_g_n
= 0;
5689 bfd_vma residual
= value
; /* Also known as Y_n. */
5691 for (current_n
= 0; current_n
<= n
; current_n
++)
5695 /* Calculate which part of the value to mask. */
5702 /* Determine the most significant bit in the residual and
5703 align the resulting value to a 2-bit boundary. */
5704 for (msb
= 30; msb
>= 0; msb
-= 2)
5705 if (residual
& (3 << msb
))
5708 /* The desired shift is now (msb - 6), or zero, whichever
5715 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
5716 g_n
= residual
& (0xff << shift
);
5717 encoded_g_n
= (g_n
>> shift
)
5718 | ((g_n
<= 0xff ? 0 : (32 - shift
) / 2) << 8);
5720 /* Calculate the residual for the next time around. */
5724 *final_residual
= residual
;
5729 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
5730 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
5733 identify_add_or_sub (bfd_vma insn
)
5735 int opcode
= insn
& 0x1e00000;
5737 if (opcode
== 1 << 23) /* ADD */
5740 if (opcode
== 1 << 22) /* SUB */
5746 /* Perform a relocation as part of a final link. */
5748 static bfd_reloc_status_type
5749 elf32_arm_final_link_relocate (reloc_howto_type
* howto
,
5752 asection
* input_section
,
5753 bfd_byte
* contents
,
5754 Elf_Internal_Rela
* rel
,
5756 struct bfd_link_info
* info
,
5758 const char * sym_name
,
5760 struct elf_link_hash_entry
* h
,
5761 bfd_boolean
* unresolved_reloc_p
,
5762 char **error_message
)
5764 unsigned long r_type
= howto
->type
;
5765 unsigned long r_symndx
;
5766 bfd_byte
* hit_data
= contents
+ rel
->r_offset
;
5767 bfd
* dynobj
= NULL
;
5768 Elf_Internal_Shdr
* symtab_hdr
;
5769 struct elf_link_hash_entry
** sym_hashes
;
5770 bfd_vma
* local_got_offsets
;
5771 asection
* sgot
= NULL
;
5772 asection
* splt
= NULL
;
5773 asection
* sreloc
= NULL
;
5775 bfd_signed_vma signed_addend
;
5776 struct elf32_arm_link_hash_table
* globals
;
5778 globals
= elf32_arm_hash_table (info
);
5780 BFD_ASSERT (is_arm_elf (input_bfd
));
5782 /* Some relocation types map to different relocations depending on the
5783 target. We pick the right one here. */
5784 r_type
= arm_real_reloc_type (globals
, r_type
);
5785 if (r_type
!= howto
->type
)
5786 howto
= elf32_arm_howto_from_type (r_type
);
5788 /* If the start address has been set, then set the EF_ARM_HASENTRY
5789 flag. Setting this more than once is redundant, but the cost is
5790 not too high, and it keeps the code simple.
5792 The test is done here, rather than somewhere else, because the
5793 start address is only set just before the final link commences.
5795 Note - if the user deliberately sets a start address of 0, the
5796 flag will not be set. */
5797 if (bfd_get_start_address (output_bfd
) != 0)
5798 elf_elfheader (output_bfd
)->e_flags
|= EF_ARM_HASENTRY
;
5800 dynobj
= elf_hash_table (info
)->dynobj
;
5803 sgot
= bfd_get_section_by_name (dynobj
, ".got");
5804 splt
= bfd_get_section_by_name (dynobj
, ".plt");
5806 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
5807 sym_hashes
= elf_sym_hashes (input_bfd
);
5808 local_got_offsets
= elf_local_got_offsets (input_bfd
);
5809 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5811 if (globals
->use_rel
)
5813 addend
= bfd_get_32 (input_bfd
, hit_data
) & howto
->src_mask
;
5815 if (addend
& ((howto
->src_mask
+ 1) >> 1))
5818 signed_addend
&= ~ howto
->src_mask
;
5819 signed_addend
|= addend
;
5822 signed_addend
= addend
;
5825 addend
= signed_addend
= rel
->r_addend
;
5830 /* We don't need to find a value for this symbol. It's just a
5832 *unresolved_reloc_p
= FALSE
;
5833 return bfd_reloc_ok
;
5836 if (!globals
->vxworks_p
)
5837 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
5841 case R_ARM_ABS32_NOI
:
5843 case R_ARM_REL32_NOI
:
5849 /* Handle relocations which should use the PLT entry. ABS32/REL32
5850 will use the symbol's value, which may point to a PLT entry, but we
5851 don't need to handle that here. If we created a PLT entry, all
5852 branches in this object should go to it. */
5853 if ((r_type
!= R_ARM_ABS32
&& r_type
!= R_ARM_REL32
5854 && r_type
!= R_ARM_ABS32_NOI
&& r_type
!= R_ARM_REL32_NOI
)
5857 && h
->plt
.offset
!= (bfd_vma
) -1)
5859 /* If we've created a .plt section, and assigned a PLT entry to
5860 this function, it should not be known to bind locally. If
5861 it were, we would have cleared the PLT entry. */
5862 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info
, h
));
5864 value
= (splt
->output_section
->vma
5865 + splt
->output_offset
5867 *unresolved_reloc_p
= FALSE
;
5868 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5869 contents
, rel
->r_offset
, value
,
5873 /* When generating a shared object or relocatable executable, these
5874 relocations are copied into the output file to be resolved at
5876 if ((info
->shared
|| globals
->root
.is_relocatable_executable
)
5877 && (input_section
->flags
& SEC_ALLOC
)
5878 && !(elf32_arm_hash_table (info
)->vxworks_p
5879 && strcmp (input_section
->output_section
->name
,
5881 && ((r_type
!= R_ARM_REL32
&& r_type
!= R_ARM_REL32_NOI
)
5882 || !SYMBOL_CALLS_LOCAL (info
, h
))
5884 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5885 || h
->root
.type
!= bfd_link_hash_undefweak
)
5886 && r_type
!= R_ARM_PC24
5887 && r_type
!= R_ARM_CALL
5888 && r_type
!= R_ARM_JUMP24
5889 && r_type
!= R_ARM_PREL31
5890 && r_type
!= R_ARM_PLT32
)
5892 Elf_Internal_Rela outrel
;
5894 bfd_boolean skip
, relocate
;
5896 *unresolved_reloc_p
= FALSE
;
5902 name
= (bfd_elf_string_from_elf_section
5904 elf_elfheader (input_bfd
)->e_shstrndx
,
5905 elf_section_data (input_section
)->rel_hdr
.sh_name
));
5907 return bfd_reloc_notsupported
;
5909 BFD_ASSERT (reloc_section_p (globals
, name
, input_section
));
5911 sreloc
= bfd_get_section_by_name (dynobj
, name
);
5912 BFD_ASSERT (sreloc
!= NULL
);
5918 outrel
.r_addend
= addend
;
5920 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
5922 if (outrel
.r_offset
== (bfd_vma
) -1)
5924 else if (outrel
.r_offset
== (bfd_vma
) -2)
5925 skip
= TRUE
, relocate
= TRUE
;
5926 outrel
.r_offset
+= (input_section
->output_section
->vma
5927 + input_section
->output_offset
);
5930 memset (&outrel
, 0, sizeof outrel
);
5935 || !h
->def_regular
))
5936 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
5941 /* This symbol is local, or marked to become local. */
5942 if (sym_flags
== STT_ARM_TFUNC
)
5944 if (globals
->symbian_p
)
5948 /* On Symbian OS, the data segment and text segement
5949 can be relocated independently. Therefore, we
5950 must indicate the segment to which this
5951 relocation is relative. The BPABI allows us to
5952 use any symbol in the right segment; we just use
5953 the section symbol as it is convenient. (We
5954 cannot use the symbol given by "h" directly as it
5955 will not appear in the dynamic symbol table.)
5957 Note that the dynamic linker ignores the section
5958 symbol value, so we don't subtract osec->vma
5959 from the emitted reloc addend. */
5961 osec
= sym_sec
->output_section
;
5963 osec
= input_section
->output_section
;
5964 symbol
= elf_section_data (osec
)->dynindx
;
5967 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
5969 if ((osec
->flags
& SEC_READONLY
) == 0
5970 && htab
->data_index_section
!= NULL
)
5971 osec
= htab
->data_index_section
;
5973 osec
= htab
->text_index_section
;
5974 symbol
= elf_section_data (osec
)->dynindx
;
5976 BFD_ASSERT (symbol
!= 0);
5979 /* On SVR4-ish systems, the dynamic loader cannot
5980 relocate the text and data segments independently,
5981 so the symbol does not matter. */
5983 outrel
.r_info
= ELF32_R_INFO (symbol
, R_ARM_RELATIVE
);
5984 if (globals
->use_rel
)
5987 outrel
.r_addend
+= value
;
5990 loc
= sreloc
->contents
;
5991 loc
+= sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
5992 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
5994 /* If this reloc is against an external symbol, we do not want to
5995 fiddle with the addend. Otherwise, we need to include the symbol
5996 value so that it becomes an addend for the dynamic reloc. */
5998 return bfd_reloc_ok
;
6000 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6001 contents
, rel
->r_offset
, value
,
6004 else switch (r_type
)
6007 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
6009 case R_ARM_XPC25
: /* Arm BLX instruction. */
6012 case R_ARM_PC24
: /* Arm B/BL instruction */
6016 bfd_signed_vma branch_offset
;
6017 struct elf32_arm_stub_hash_entry
*stub_entry
= NULL
;
6019 from
= (input_section
->output_section
->vma
6020 + input_section
->output_offset
6022 branch_offset
= (bfd_signed_vma
)(value
- from
);
6024 if (r_type
== R_ARM_XPC25
)
6026 /* Check for Arm calling Arm function. */
6027 /* FIXME: Should we translate the instruction into a BL
6028 instruction instead ? */
6029 if (sym_flags
!= STT_ARM_TFUNC
)
6030 (*_bfd_error_handler
)
6031 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
6033 h
? h
->root
.root
.string
: "(local)");
6035 else if (r_type
!= R_ARM_CALL
)
6037 /* Check for Arm calling Thumb function. */
6038 if (sym_flags
== STT_ARM_TFUNC
)
6040 if (elf32_arm_to_thumb_stub (info
, sym_name
, input_bfd
,
6041 output_bfd
, input_section
,
6042 hit_data
, sym_sec
, rel
->r_offset
,
6043 signed_addend
, value
,
6045 return bfd_reloc_ok
;
6047 return bfd_reloc_dangerous
;
6051 /* Check if a stub has to be inserted because the
6052 destination is too far or we are changing mode */
6053 if (r_type
== R_ARM_CALL
)
6055 if (branch_offset
> ARM_MAX_FWD_BRANCH_OFFSET
6056 || branch_offset
< ARM_MAX_BWD_BRANCH_OFFSET
6057 || sym_flags
== STT_ARM_TFUNC
)
6059 /* The target is out of reach, so redirect the
6060 branch to the local stub for this function. */
6062 stub_entry
= elf32_arm_get_stub_entry (input_section
,
6065 if (stub_entry
!= NULL
)
6066 value
= (stub_entry
->stub_offset
6067 + stub_entry
->stub_sec
->output_offset
6068 + stub_entry
->stub_sec
->output_section
->vma
);
6072 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
6074 S is the address of the symbol in the relocation.
6075 P is address of the instruction being relocated.
6076 A is the addend (extracted from the instruction) in bytes.
6078 S is held in 'value'.
6079 P is the base address of the section containing the
6080 instruction plus the offset of the reloc into that
6082 (input_section->output_section->vma +
6083 input_section->output_offset +
6085 A is the addend, converted into bytes, ie:
6088 Note: None of these operations have knowledge of the pipeline
6089 size of the processor, thus it is up to the assembler to
6090 encode this information into the addend. */
6091 value
-= (input_section
->output_section
->vma
6092 + input_section
->output_offset
);
6093 value
-= rel
->r_offset
;
6094 if (globals
->use_rel
)
6095 value
+= (signed_addend
<< howto
->size
);
6097 /* RELA addends do not have to be adjusted by howto->size. */
6098 value
+= signed_addend
;
6100 signed_addend
= value
;
6101 signed_addend
>>= howto
->rightshift
;
6103 /* A branch to an undefined weak symbol is turned into a jump to
6104 the next instruction. */
6105 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
6107 value
= (bfd_get_32 (input_bfd
, hit_data
) & 0xf0000000)
6112 /* Perform a signed range check. */
6113 if ( signed_addend
> ((bfd_signed_vma
) (howto
->dst_mask
>> 1))
6114 || signed_addend
< - ((bfd_signed_vma
) ((howto
->dst_mask
+ 1) >> 1)))
6115 return bfd_reloc_overflow
;
6117 addend
= (value
& 2);
6119 value
= (signed_addend
& howto
->dst_mask
)
6120 | (bfd_get_32 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
6122 /* Set the H bit in the BLX instruction. */
6123 if (sym_flags
== STT_ARM_TFUNC
)
6128 value
&= ~(bfd_vma
)(1 << 24);
6130 if (r_type
== R_ARM_CALL
)
6132 /* Select the correct instruction (BL or BLX). */
6133 /* Only if we are not handling a BL to a stub. In this
6134 case, mode switching is performed by the stub. */
6135 if (sym_flags
== STT_ARM_TFUNC
&& !stub_entry
)
6139 value
&= ~(bfd_vma
)(1 << 28);
6149 if (sym_flags
== STT_ARM_TFUNC
)
6153 case R_ARM_ABS32_NOI
:
6159 if (sym_flags
== STT_ARM_TFUNC
)
6161 value
-= (input_section
->output_section
->vma
6162 + input_section
->output_offset
+ rel
->r_offset
);
6165 case R_ARM_REL32_NOI
:
6167 value
-= (input_section
->output_section
->vma
6168 + input_section
->output_offset
+ rel
->r_offset
);
6172 value
-= (input_section
->output_section
->vma
6173 + input_section
->output_offset
+ rel
->r_offset
);
6174 value
+= signed_addend
;
6175 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
6177 /* Check for overflow */
6178 if ((value
^ (value
>> 1)) & (1 << 30))
6179 return bfd_reloc_overflow
;
6181 value
&= 0x7fffffff;
6182 value
|= (bfd_get_32 (input_bfd
, hit_data
) & 0x80000000);
6183 if (sym_flags
== STT_ARM_TFUNC
)
6188 bfd_put_32 (input_bfd
, value
, hit_data
);
6189 return bfd_reloc_ok
;
6193 if ((long) value
> 0x7f || (long) value
< -0x80)
6194 return bfd_reloc_overflow
;
6196 bfd_put_8 (input_bfd
, value
, hit_data
);
6197 return bfd_reloc_ok
;
6202 if ((long) value
> 0x7fff || (long) value
< -0x8000)
6203 return bfd_reloc_overflow
;
6205 bfd_put_16 (input_bfd
, value
, hit_data
);
6206 return bfd_reloc_ok
;
6208 case R_ARM_THM_ABS5
:
6209 /* Support ldr and str instructions for the thumb. */
6210 if (globals
->use_rel
)
6212 /* Need to refetch addend. */
6213 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
6214 /* ??? Need to determine shift amount from operand size. */
6215 addend
>>= howto
->rightshift
;
6219 /* ??? Isn't value unsigned? */
6220 if ((long) value
> 0x1f || (long) value
< -0x10)
6221 return bfd_reloc_overflow
;
6223 /* ??? Value needs to be properly shifted into place first. */
6224 value
|= bfd_get_16 (input_bfd
, hit_data
) & 0xf83f;
6225 bfd_put_16 (input_bfd
, value
, hit_data
);
6226 return bfd_reloc_ok
;
6228 case R_ARM_THM_ALU_PREL_11_0
:
6229 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
6232 bfd_signed_vma relocation
;
6234 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
6235 | bfd_get_16 (input_bfd
, hit_data
+ 2);
6237 if (globals
->use_rel
)
6239 signed_addend
= (insn
& 0xff) | ((insn
& 0x7000) >> 4)
6240 | ((insn
& (1 << 26)) >> 15);
6241 if (insn
& 0xf00000)
6242 signed_addend
= -signed_addend
;
6245 relocation
= value
+ signed_addend
;
6246 relocation
-= (input_section
->output_section
->vma
6247 + input_section
->output_offset
6250 value
= abs (relocation
);
6252 if (value
>= 0x1000)
6253 return bfd_reloc_overflow
;
6255 insn
= (insn
& 0xfb0f8f00) | (value
& 0xff)
6256 | ((value
& 0x700) << 4)
6257 | ((value
& 0x800) << 15);
6261 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
6262 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
6264 return bfd_reloc_ok
;
6267 case R_ARM_THM_PC12
:
6268 /* Corresponds to: ldr.w reg, [pc, #offset]. */
6271 bfd_signed_vma relocation
;
6273 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
6274 | bfd_get_16 (input_bfd
, hit_data
+ 2);
6276 if (globals
->use_rel
)
6278 signed_addend
= insn
& 0xfff;
6279 if (!(insn
& (1 << 23)))
6280 signed_addend
= -signed_addend
;
6283 relocation
= value
+ signed_addend
;
6284 relocation
-= (input_section
->output_section
->vma
6285 + input_section
->output_offset
6288 value
= abs (relocation
);
6290 if (value
>= 0x1000)
6291 return bfd_reloc_overflow
;
6293 insn
= (insn
& 0xff7ff000) | value
;
6294 if (relocation
>= 0)
6297 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
6298 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
6300 return bfd_reloc_ok
;
6303 case R_ARM_THM_XPC22
:
6304 case R_ARM_THM_CALL
:
6305 case R_ARM_THM_JUMP24
:
6306 /* Thumb BL (branch long instruction). */
6310 bfd_boolean overflow
= FALSE
;
6311 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
6312 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
6313 bfd_signed_vma reloc_signed_max
;
6314 bfd_signed_vma reloc_signed_min
;
6316 bfd_signed_vma signed_check
;
6318 int thumb2
= using_thumb2 (globals
);
6320 /* A branch to an undefined weak symbol is turned into a jump to
6321 the next instruction. */
6322 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
6324 bfd_put_16 (input_bfd
, 0xe000, hit_data
);
6325 bfd_put_16 (input_bfd
, 0xbf00, hit_data
+ 2);
6326 return bfd_reloc_ok
;
6329 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
6330 with Thumb-1) involving the J1 and J2 bits. */
6331 if (globals
->use_rel
)
6333 bfd_vma s
= (upper_insn
& (1 << 10)) >> 10;
6334 bfd_vma upper
= upper_insn
& 0x3ff;
6335 bfd_vma lower
= lower_insn
& 0x7ff;
6336 bfd_vma j1
= (lower_insn
& (1 << 13)) >> 13;
6337 bfd_vma j2
= (lower_insn
& (1 << 11)) >> 11;
6338 bfd_vma i1
= j1
^ s
? 0 : 1;
6339 bfd_vma i2
= j2
^ s
? 0 : 1;
6341 addend
= (i1
<< 23) | (i2
<< 22) | (upper
<< 12) | (lower
<< 1);
6343 addend
= (addend
| ((s
? 0 : 1) << 24)) - (1 << 24);
6345 signed_addend
= addend
;
6348 if (r_type
== R_ARM_THM_XPC22
)
6350 /* Check for Thumb to Thumb call. */
6351 /* FIXME: Should we translate the instruction into a BL
6352 instruction instead ? */
6353 if (sym_flags
== STT_ARM_TFUNC
)
6354 (*_bfd_error_handler
)
6355 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
6357 h
? h
->root
.root
.string
: "(local)");
6361 /* If it is not a call to Thumb, assume call to Arm.
6362 If it is a call relative to a section name, then it is not a
6363 function call at all, but rather a long jump. Calls through
6364 the PLT do not require stubs. */
6365 if (sym_flags
!= STT_ARM_TFUNC
&& sym_flags
!= STT_SECTION
6366 && (h
== NULL
|| splt
== NULL
6367 || h
->plt
.offset
== (bfd_vma
) -1))
6369 if (globals
->use_blx
&& r_type
== R_ARM_THM_CALL
)
6371 /* Convert BL to BLX. */
6372 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
6374 else if (r_type
!= R_ARM_THM_CALL
) {
6375 if (elf32_thumb_to_arm_stub
6376 (info
, sym_name
, input_bfd
, output_bfd
, input_section
,
6377 hit_data
, sym_sec
, rel
->r_offset
, signed_addend
, value
,
6379 return bfd_reloc_ok
;
6381 return bfd_reloc_dangerous
;
6384 else if (sym_flags
== STT_ARM_TFUNC
&& globals
->use_blx
6385 && r_type
== R_ARM_THM_CALL
)
6387 /* Make sure this is a BL. */
6388 lower_insn
|= 0x1800;
6392 /* Handle calls via the PLT. */
6393 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
6395 value
= (splt
->output_section
->vma
6396 + splt
->output_offset
6398 if (globals
->use_blx
&& r_type
== R_ARM_THM_CALL
)
6400 /* If the Thumb BLX instruction is available, convert the
6401 BL to a BLX instruction to call the ARM-mode PLT entry. */
6402 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
6405 /* Target the Thumb stub before the ARM PLT entry. */
6406 value
-= PLT_THUMB_STUB_SIZE
;
6407 *unresolved_reloc_p
= FALSE
;
6410 if (r_type
== R_ARM_THM_CALL
)
6412 /* Check if a stub has to be inserted because the destination
6415 bfd_signed_vma branch_offset
;
6416 struct elf32_arm_stub_hash_entry
*stub_entry
= NULL
;
6418 from
= (input_section
->output_section
->vma
6419 + input_section
->output_offset
6421 branch_offset
= (bfd_signed_vma
)(value
- from
);
6424 && (branch_offset
> THM_MAX_FWD_BRANCH_OFFSET
6425 || (branch_offset
< THM_MAX_BWD_BRANCH_OFFSET
)))
6428 && (branch_offset
> THM2_MAX_FWD_BRANCH_OFFSET
6429 || (branch_offset
< THM2_MAX_BWD_BRANCH_OFFSET
))))
6431 /* The target is out of reach or we are changing modes, so
6432 redirect the branch to the local stub for this
6434 stub_entry
= elf32_arm_get_stub_entry (input_section
,
6437 if (stub_entry
!= NULL
)
6438 value
= (stub_entry
->stub_offset
6439 + stub_entry
->stub_sec
->output_offset
6440 + stub_entry
->stub_sec
->output_section
->vma
);
6442 /* This call becomes a call to Arm for sure. Force BLX. */
6443 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
6447 relocation
= value
+ signed_addend
;
6449 relocation
-= (input_section
->output_section
->vma
6450 + input_section
->output_offset
6453 check
= relocation
>> howto
->rightshift
;
6455 /* If this is a signed value, the rightshift just dropped
6456 leading 1 bits (assuming twos complement). */
6457 if ((bfd_signed_vma
) relocation
>= 0)
6458 signed_check
= check
;
6460 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
6462 /* Calculate the permissable maximum and minimum values for
6463 this relocation according to whether we're relocating for
6465 bitsize
= howto
->bitsize
;
6468 reloc_signed_max
= ((1 << (bitsize
- 1)) - 1) >> howto
->rightshift
;
6469 reloc_signed_min
= ~reloc_signed_max
;
6471 /* Assumes two's complement. */
6472 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
6475 if ((lower_insn
& 0x5000) == 0x4000)
6476 /* For a BLX instruction, make sure that the relocation is rounded up
6477 to a word boundary. This follows the semantics of the instruction
6478 which specifies that bit 1 of the target address will come from bit
6479 1 of the base address. */
6480 relocation
= (relocation
+ 2) & ~ 3;
6482 /* Put RELOCATION back into the insn. Assumes two's complement.
6483 We use the Thumb-2 encoding, which is safe even if dealing with
6484 a Thumb-1 instruction by virtue of our overflow check above. */
6485 reloc_sign
= (signed_check
< 0) ? 1 : 0;
6486 upper_insn
= (upper_insn
& ~(bfd_vma
) 0x7ff)
6487 | ((relocation
>> 12) & 0x3ff)
6488 | (reloc_sign
<< 10);
6489 lower_insn
= (lower_insn
& ~(bfd_vma
) 0x2fff)
6490 | (((!((relocation
>> 23) & 1)) ^ reloc_sign
) << 13)
6491 | (((!((relocation
>> 22) & 1)) ^ reloc_sign
) << 11)
6492 | ((relocation
>> 1) & 0x7ff);
6494 /* Put the relocated value back in the object file: */
6495 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
6496 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
6498 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
6502 case R_ARM_THM_JUMP19
:
6503 /* Thumb32 conditional branch instruction. */
6506 bfd_boolean overflow
= FALSE
;
6507 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
6508 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
6509 bfd_signed_vma reloc_signed_max
= 0xffffe;
6510 bfd_signed_vma reloc_signed_min
= -0x100000;
6511 bfd_signed_vma signed_check
;
6513 /* Need to refetch the addend, reconstruct the top three bits,
6514 and squish the two 11 bit pieces together. */
6515 if (globals
->use_rel
)
6517 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
6518 bfd_vma upper
= (upper_insn
& 0x003f);
6519 bfd_vma J1
= (lower_insn
& 0x2000) >> 13;
6520 bfd_vma J2
= (lower_insn
& 0x0800) >> 11;
6521 bfd_vma lower
= (lower_insn
& 0x07ff);
6526 upper
-= 0x0100; /* Sign extend. */
6528 addend
= (upper
<< 12) | (lower
<< 1);
6529 signed_addend
= addend
;
6532 /* Handle calls via the PLT. */
6533 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
6535 value
= (splt
->output_section
->vma
6536 + splt
->output_offset
6538 /* Target the Thumb stub before the ARM PLT entry. */
6539 value
-= PLT_THUMB_STUB_SIZE
;
6540 *unresolved_reloc_p
= FALSE
;
6543 /* ??? Should handle interworking? GCC might someday try to
6544 use this for tail calls. */
6546 relocation
= value
+ signed_addend
;
6547 relocation
-= (input_section
->output_section
->vma
6548 + input_section
->output_offset
6550 signed_check
= (bfd_signed_vma
) relocation
;
6552 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
6555 /* Put RELOCATION back into the insn. */
6557 bfd_vma S
= (relocation
& 0x00100000) >> 20;
6558 bfd_vma J2
= (relocation
& 0x00080000) >> 19;
6559 bfd_vma J1
= (relocation
& 0x00040000) >> 18;
6560 bfd_vma hi
= (relocation
& 0x0003f000) >> 12;
6561 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
6563 upper_insn
= (upper_insn
& 0xfbc0) | (S
<< 10) | hi
;
6564 lower_insn
= (lower_insn
& 0xd000) | (J1
<< 13) | (J2
<< 11) | lo
;
6567 /* Put the relocated value back in the object file: */
6568 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
6569 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
6571 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
6574 case R_ARM_THM_JUMP11
:
6575 case R_ARM_THM_JUMP8
:
6576 case R_ARM_THM_JUMP6
:
6577 /* Thumb B (branch) instruction). */
6579 bfd_signed_vma relocation
;
6580 bfd_signed_vma reloc_signed_max
= (1 << (howto
->bitsize
- 1)) - 1;
6581 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
6582 bfd_signed_vma signed_check
;
6584 /* CZB cannot jump backward. */
6585 if (r_type
== R_ARM_THM_JUMP6
)
6586 reloc_signed_min
= 0;
6588 if (globals
->use_rel
)
6590 /* Need to refetch addend. */
6591 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
6592 if (addend
& ((howto
->src_mask
+ 1) >> 1))
6595 signed_addend
&= ~ howto
->src_mask
;
6596 signed_addend
|= addend
;
6599 signed_addend
= addend
;
6600 /* The value in the insn has been right shifted. We need to
6601 undo this, so that we can perform the address calculation
6602 in terms of bytes. */
6603 signed_addend
<<= howto
->rightshift
;
6605 relocation
= value
+ signed_addend
;
6607 relocation
-= (input_section
->output_section
->vma
6608 + input_section
->output_offset
6611 relocation
>>= howto
->rightshift
;
6612 signed_check
= relocation
;
6614 if (r_type
== R_ARM_THM_JUMP6
)
6615 relocation
= ((relocation
& 0x0020) << 4) | ((relocation
& 0x001f) << 3);
6617 relocation
&= howto
->dst_mask
;
6618 relocation
|= (bfd_get_16 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
6620 bfd_put_16 (input_bfd
, relocation
, hit_data
);
6622 /* Assumes two's complement. */
6623 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
6624 return bfd_reloc_overflow
;
6626 return bfd_reloc_ok
;
6629 case R_ARM_ALU_PCREL7_0
:
6630 case R_ARM_ALU_PCREL15_8
:
6631 case R_ARM_ALU_PCREL23_15
:
6636 insn
= bfd_get_32 (input_bfd
, hit_data
);
6637 if (globals
->use_rel
)
6639 /* Extract the addend. */
6640 addend
= (insn
& 0xff) << ((insn
& 0xf00) >> 7);
6641 signed_addend
= addend
;
6643 relocation
= value
+ signed_addend
;
6645 relocation
-= (input_section
->output_section
->vma
6646 + input_section
->output_offset
6648 insn
= (insn
& ~0xfff)
6649 | ((howto
->bitpos
<< 7) & 0xf00)
6650 | ((relocation
>> howto
->bitpos
) & 0xff);
6651 bfd_put_32 (input_bfd
, value
, hit_data
);
6653 return bfd_reloc_ok
;
6655 case R_ARM_GNU_VTINHERIT
:
6656 case R_ARM_GNU_VTENTRY
:
6657 return bfd_reloc_ok
;
6659 case R_ARM_GOTOFF32
:
6660 /* Relocation is relative to the start of the
6661 global offset table. */
6663 BFD_ASSERT (sgot
!= NULL
);
6665 return bfd_reloc_notsupported
;
6667 /* If we are addressing a Thumb function, we need to adjust the
6668 address by one, so that attempts to call the function pointer will
6669 correctly interpret it as Thumb code. */
6670 if (sym_flags
== STT_ARM_TFUNC
)
6673 /* Note that sgot->output_offset is not involved in this
6674 calculation. We always want the start of .got. If we
6675 define _GLOBAL_OFFSET_TABLE in a different way, as is
6676 permitted by the ABI, we might have to change this
6678 value
-= sgot
->output_section
->vma
;
6679 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6680 contents
, rel
->r_offset
, value
,
6684 /* Use global offset table as symbol value. */
6685 BFD_ASSERT (sgot
!= NULL
);
6688 return bfd_reloc_notsupported
;
6690 *unresolved_reloc_p
= FALSE
;
6691 value
= sgot
->output_section
->vma
;
6692 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6693 contents
, rel
->r_offset
, value
,
6697 case R_ARM_GOT_PREL
:
6698 /* Relocation is to the entry for this symbol in the
6699 global offset table. */
6701 return bfd_reloc_notsupported
;
6708 off
= h
->got
.offset
;
6709 BFD_ASSERT (off
!= (bfd_vma
) -1);
6710 dyn
= globals
->root
.dynamic_sections_created
;
6712 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
6714 && SYMBOL_REFERENCES_LOCAL (info
, h
))
6715 || (ELF_ST_VISIBILITY (h
->other
)
6716 && h
->root
.type
== bfd_link_hash_undefweak
))
6718 /* This is actually a static link, or it is a -Bsymbolic link
6719 and the symbol is defined locally. We must initialize this
6720 entry in the global offset table. Since the offset must
6721 always be a multiple of 4, we use the least significant bit
6722 to record whether we have initialized it already.
6724 When doing a dynamic link, we create a .rel(a).got relocation
6725 entry to initialize the value. This is done in the
6726 finish_dynamic_symbol routine. */
6731 /* If we are addressing a Thumb function, we need to
6732 adjust the address by one, so that attempts to
6733 call the function pointer will correctly
6734 interpret it as Thumb code. */
6735 if (sym_flags
== STT_ARM_TFUNC
)
6738 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
6743 *unresolved_reloc_p
= FALSE
;
6745 value
= sgot
->output_offset
+ off
;
6751 BFD_ASSERT (local_got_offsets
!= NULL
&&
6752 local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
6754 off
= local_got_offsets
[r_symndx
];
6756 /* The offset must always be a multiple of 4. We use the
6757 least significant bit to record whether we have already
6758 generated the necessary reloc. */
6763 /* If we are addressing a Thumb function, we need to
6764 adjust the address by one, so that attempts to
6765 call the function pointer will correctly
6766 interpret it as Thumb code. */
6767 if (sym_flags
== STT_ARM_TFUNC
)
6770 if (globals
->use_rel
)
6771 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
6776 Elf_Internal_Rela outrel
;
6779 srelgot
= (bfd_get_section_by_name
6780 (dynobj
, RELOC_SECTION (globals
, ".got")));
6781 BFD_ASSERT (srelgot
!= NULL
);
6783 outrel
.r_addend
= addend
+ value
;
6784 outrel
.r_offset
= (sgot
->output_section
->vma
6785 + sgot
->output_offset
6787 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
6788 loc
= srelgot
->contents
;
6789 loc
+= srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
6790 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
6793 local_got_offsets
[r_symndx
] |= 1;
6796 value
= sgot
->output_offset
+ off
;
6798 if (r_type
!= R_ARM_GOT32
)
6799 value
+= sgot
->output_section
->vma
;
6801 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6802 contents
, rel
->r_offset
, value
,
6805 case R_ARM_TLS_LDO32
:
6806 value
= value
- dtpoff_base (info
);
6808 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6809 contents
, rel
->r_offset
, value
,
6812 case R_ARM_TLS_LDM32
:
6816 if (globals
->sgot
== NULL
)
6819 off
= globals
->tls_ldm_got
.offset
;
6825 /* If we don't know the module number, create a relocation
6829 Elf_Internal_Rela outrel
;
6832 if (globals
->srelgot
== NULL
)
6835 outrel
.r_addend
= 0;
6836 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
6837 + globals
->sgot
->output_offset
+ off
);
6838 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32
);
6840 if (globals
->use_rel
)
6841 bfd_put_32 (output_bfd
, outrel
.r_addend
,
6842 globals
->sgot
->contents
+ off
);
6844 loc
= globals
->srelgot
->contents
;
6845 loc
+= globals
->srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
6846 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
6849 bfd_put_32 (output_bfd
, 1, globals
->sgot
->contents
+ off
);
6851 globals
->tls_ldm_got
.offset
|= 1;
6854 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
6855 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
6857 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6858 contents
, rel
->r_offset
, value
,
6862 case R_ARM_TLS_GD32
:
6863 case R_ARM_TLS_IE32
:
6869 if (globals
->sgot
== NULL
)
6876 dyn
= globals
->root
.dynamic_sections_created
;
6877 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
6879 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
6881 *unresolved_reloc_p
= FALSE
;
6884 off
= h
->got
.offset
;
6885 tls_type
= ((struct elf32_arm_link_hash_entry
*) h
)->tls_type
;
6889 if (local_got_offsets
== NULL
)
6891 off
= local_got_offsets
[r_symndx
];
6892 tls_type
= elf32_arm_local_got_tls_type (input_bfd
)[r_symndx
];
6895 if (tls_type
== GOT_UNKNOWN
)
6902 bfd_boolean need_relocs
= FALSE
;
6903 Elf_Internal_Rela outrel
;
6904 bfd_byte
*loc
= NULL
;
6907 /* The GOT entries have not been initialized yet. Do it
6908 now, and emit any relocations. If both an IE GOT and a
6909 GD GOT are necessary, we emit the GD first. */
6911 if ((info
->shared
|| indx
!= 0)
6913 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6914 || h
->root
.type
!= bfd_link_hash_undefweak
))
6917 if (globals
->srelgot
== NULL
)
6919 loc
= globals
->srelgot
->contents
;
6920 loc
+= globals
->srelgot
->reloc_count
* RELOC_SIZE (globals
);
6923 if (tls_type
& GOT_TLS_GD
)
6927 outrel
.r_addend
= 0;
6928 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
6929 + globals
->sgot
->output_offset
6931 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_DTPMOD32
);
6933 if (globals
->use_rel
)
6934 bfd_put_32 (output_bfd
, outrel
.r_addend
,
6935 globals
->sgot
->contents
+ cur_off
);
6937 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
6938 globals
->srelgot
->reloc_count
++;
6939 loc
+= RELOC_SIZE (globals
);
6942 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
6943 globals
->sgot
->contents
+ cur_off
+ 4);
6946 outrel
.r_addend
= 0;
6947 outrel
.r_info
= ELF32_R_INFO (indx
,
6948 R_ARM_TLS_DTPOFF32
);
6949 outrel
.r_offset
+= 4;
6951 if (globals
->use_rel
)
6952 bfd_put_32 (output_bfd
, outrel
.r_addend
,
6953 globals
->sgot
->contents
+ cur_off
+ 4);
6956 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
6957 globals
->srelgot
->reloc_count
++;
6958 loc
+= RELOC_SIZE (globals
);
6963 /* If we are not emitting relocations for a
6964 general dynamic reference, then we must be in a
6965 static link or an executable link with the
6966 symbol binding locally. Mark it as belonging
6967 to module 1, the executable. */
6968 bfd_put_32 (output_bfd
, 1,
6969 globals
->sgot
->contents
+ cur_off
);
6970 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
6971 globals
->sgot
->contents
+ cur_off
+ 4);
6977 if (tls_type
& GOT_TLS_IE
)
6982 outrel
.r_addend
= value
- dtpoff_base (info
);
6984 outrel
.r_addend
= 0;
6985 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
6986 + globals
->sgot
->output_offset
6988 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_TPOFF32
);
6990 if (globals
->use_rel
)
6991 bfd_put_32 (output_bfd
, outrel
.r_addend
,
6992 globals
->sgot
->contents
+ cur_off
);
6994 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
6995 globals
->srelgot
->reloc_count
++;
6996 loc
+= RELOC_SIZE (globals
);
6999 bfd_put_32 (output_bfd
, tpoff (info
, value
),
7000 globals
->sgot
->contents
+ cur_off
);
7007 local_got_offsets
[r_symndx
] |= 1;
7010 if ((tls_type
& GOT_TLS_GD
) && r_type
!= R_ARM_TLS_GD32
)
7012 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
7013 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
7015 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
7016 contents
, rel
->r_offset
, value
,
7020 case R_ARM_TLS_LE32
:
7023 (*_bfd_error_handler
)
7024 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
7025 input_bfd
, input_section
,
7026 (long) rel
->r_offset
, howto
->name
);
7030 value
= tpoff (info
, value
);
7032 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
7033 contents
, rel
->r_offset
, value
,
7037 if (globals
->fix_v4bx
)
7039 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7041 /* Ensure that we have a BX instruction. */
7042 BFD_ASSERT ((insn
& 0x0ffffff0) == 0x012fff10);
7044 if (globals
->fix_v4bx
== 2 && (insn
& 0xf) != 0xf)
7046 /* Branch to veneer. */
7048 glue_addr
= elf32_arm_bx_glue (info
, insn
& 0xf);
7049 glue_addr
-= input_section
->output_section
->vma
7050 + input_section
->output_offset
7051 + rel
->r_offset
+ 8;
7052 insn
= (insn
& 0xf0000000) | 0x0a000000
7053 | ((glue_addr
>> 2) & 0x00ffffff);
7057 /* Preserve Rm (lowest four bits) and the condition code
7058 (highest four bits). Other bits encode MOV PC,Rm. */
7059 insn
= (insn
& 0xf000000f) | 0x01a0f000;
7062 bfd_put_32 (input_bfd
, insn
, hit_data
);
7064 return bfd_reloc_ok
;
7066 case R_ARM_MOVW_ABS_NC
:
7067 case R_ARM_MOVT_ABS
:
7068 case R_ARM_MOVW_PREL_NC
:
7069 case R_ARM_MOVT_PREL
:
7070 /* Until we properly support segment-base-relative addressing then
7071 we assume the segment base to be zero, as for the group relocations.
7072 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
7073 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
7074 case R_ARM_MOVW_BREL_NC
:
7075 case R_ARM_MOVW_BREL
:
7076 case R_ARM_MOVT_BREL
:
7078 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7080 if (globals
->use_rel
)
7082 addend
= ((insn
>> 4) & 0xf000) | (insn
& 0xfff);
7083 signed_addend
= (addend
^ 0x8000) - 0x8000;
7086 value
+= signed_addend
;
7088 if (r_type
== R_ARM_MOVW_PREL_NC
|| r_type
== R_ARM_MOVT_PREL
)
7089 value
-= (input_section
->output_section
->vma
7090 + input_section
->output_offset
+ rel
->r_offset
);
7092 if (r_type
== R_ARM_MOVW_BREL
&& value
>= 0x10000)
7093 return bfd_reloc_overflow
;
7095 if (sym_flags
== STT_ARM_TFUNC
)
7098 if (r_type
== R_ARM_MOVT_ABS
|| r_type
== R_ARM_MOVT_PREL
7099 || r_type
== R_ARM_MOVT_BREL
)
7103 insn
|= value
& 0xfff;
7104 insn
|= (value
& 0xf000) << 4;
7105 bfd_put_32 (input_bfd
, insn
, hit_data
);
7107 return bfd_reloc_ok
;
7109 case R_ARM_THM_MOVW_ABS_NC
:
7110 case R_ARM_THM_MOVT_ABS
:
7111 case R_ARM_THM_MOVW_PREL_NC
:
7112 case R_ARM_THM_MOVT_PREL
:
7113 /* Until we properly support segment-base-relative addressing then
7114 we assume the segment base to be zero, as for the above relocations.
7115 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
7116 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
7117 as R_ARM_THM_MOVT_ABS. */
7118 case R_ARM_THM_MOVW_BREL_NC
:
7119 case R_ARM_THM_MOVW_BREL
:
7120 case R_ARM_THM_MOVT_BREL
:
7124 insn
= bfd_get_16 (input_bfd
, hit_data
) << 16;
7125 insn
|= bfd_get_16 (input_bfd
, hit_data
+ 2);
7127 if (globals
->use_rel
)
7129 addend
= ((insn
>> 4) & 0xf000)
7130 | ((insn
>> 15) & 0x0800)
7131 | ((insn
>> 4) & 0x0700)
7133 signed_addend
= (addend
^ 0x8000) - 0x8000;
7136 value
+= signed_addend
;
7138 if (r_type
== R_ARM_THM_MOVW_PREL_NC
|| r_type
== R_ARM_THM_MOVT_PREL
)
7139 value
-= (input_section
->output_section
->vma
7140 + input_section
->output_offset
+ rel
->r_offset
);
7142 if (r_type
== R_ARM_THM_MOVW_BREL
&& value
>= 0x10000)
7143 return bfd_reloc_overflow
;
7145 if (sym_flags
== STT_ARM_TFUNC
)
7148 if (r_type
== R_ARM_THM_MOVT_ABS
|| r_type
== R_ARM_THM_MOVT_PREL
7149 || r_type
== R_ARM_THM_MOVT_BREL
)
7153 insn
|= (value
& 0xf000) << 4;
7154 insn
|= (value
& 0x0800) << 15;
7155 insn
|= (value
& 0x0700) << 4;
7156 insn
|= (value
& 0x00ff);
7158 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
7159 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
7161 return bfd_reloc_ok
;
7163 case R_ARM_ALU_PC_G0_NC
:
7164 case R_ARM_ALU_PC_G1_NC
:
7165 case R_ARM_ALU_PC_G0
:
7166 case R_ARM_ALU_PC_G1
:
7167 case R_ARM_ALU_PC_G2
:
7168 case R_ARM_ALU_SB_G0_NC
:
7169 case R_ARM_ALU_SB_G1_NC
:
7170 case R_ARM_ALU_SB_G0
:
7171 case R_ARM_ALU_SB_G1
:
7172 case R_ARM_ALU_SB_G2
:
7174 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7175 bfd_vma pc
= input_section
->output_section
->vma
7176 + input_section
->output_offset
+ rel
->r_offset
;
7177 /* sb should be the origin of the *segment* containing the symbol.
7178 It is not clear how to obtain this OS-dependent value, so we
7179 make an arbitrary choice of zero. */
7183 bfd_signed_vma signed_value
;
7186 /* Determine which group of bits to select. */
7189 case R_ARM_ALU_PC_G0_NC
:
7190 case R_ARM_ALU_PC_G0
:
7191 case R_ARM_ALU_SB_G0_NC
:
7192 case R_ARM_ALU_SB_G0
:
7196 case R_ARM_ALU_PC_G1_NC
:
7197 case R_ARM_ALU_PC_G1
:
7198 case R_ARM_ALU_SB_G1_NC
:
7199 case R_ARM_ALU_SB_G1
:
7203 case R_ARM_ALU_PC_G2
:
7204 case R_ARM_ALU_SB_G2
:
7212 /* If REL, extract the addend from the insn. If RELA, it will
7213 have already been fetched for us. */
7214 if (globals
->use_rel
)
7217 bfd_vma constant
= insn
& 0xff;
7218 bfd_vma rotation
= (insn
& 0xf00) >> 8;
7221 signed_addend
= constant
;
7224 /* Compensate for the fact that in the instruction, the
7225 rotation is stored in multiples of 2 bits. */
7228 /* Rotate "constant" right by "rotation" bits. */
7229 signed_addend
= (constant
>> rotation
) |
7230 (constant
<< (8 * sizeof (bfd_vma
) - rotation
));
7233 /* Determine if the instruction is an ADD or a SUB.
7234 (For REL, this determines the sign of the addend.) */
7235 negative
= identify_add_or_sub (insn
);
7238 (*_bfd_error_handler
)
7239 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
7240 input_bfd
, input_section
,
7241 (long) rel
->r_offset
, howto
->name
);
7242 return bfd_reloc_overflow
;
7245 signed_addend
*= negative
;
7248 /* Compute the value (X) to go in the place. */
7249 if (r_type
== R_ARM_ALU_PC_G0_NC
7250 || r_type
== R_ARM_ALU_PC_G1_NC
7251 || r_type
== R_ARM_ALU_PC_G0
7252 || r_type
== R_ARM_ALU_PC_G1
7253 || r_type
== R_ARM_ALU_PC_G2
)
7255 signed_value
= value
- pc
+ signed_addend
;
7257 /* Section base relative. */
7258 signed_value
= value
- sb
+ signed_addend
;
7260 /* If the target symbol is a Thumb function, then set the
7261 Thumb bit in the address. */
7262 if (sym_flags
== STT_ARM_TFUNC
)
7265 /* Calculate the value of the relevant G_n, in encoded
7266 constant-with-rotation format. */
7267 g_n
= calculate_group_reloc_mask (abs (signed_value
), group
,
7270 /* Check for overflow if required. */
7271 if ((r_type
== R_ARM_ALU_PC_G0
7272 || r_type
== R_ARM_ALU_PC_G1
7273 || r_type
== R_ARM_ALU_PC_G2
7274 || r_type
== R_ARM_ALU_SB_G0
7275 || r_type
== R_ARM_ALU_SB_G1
7276 || r_type
== R_ARM_ALU_SB_G2
) && residual
!= 0)
7278 (*_bfd_error_handler
)
7279 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7280 input_bfd
, input_section
,
7281 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7282 return bfd_reloc_overflow
;
7285 /* Mask out the value and the ADD/SUB part of the opcode; take care
7286 not to destroy the S bit. */
7289 /* Set the opcode according to whether the value to go in the
7290 place is negative. */
7291 if (signed_value
< 0)
7296 /* Encode the offset. */
7299 bfd_put_32 (input_bfd
, insn
, hit_data
);
7301 return bfd_reloc_ok
;
7303 case R_ARM_LDR_PC_G0
:
7304 case R_ARM_LDR_PC_G1
:
7305 case R_ARM_LDR_PC_G2
:
7306 case R_ARM_LDR_SB_G0
:
7307 case R_ARM_LDR_SB_G1
:
7308 case R_ARM_LDR_SB_G2
:
7310 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7311 bfd_vma pc
= input_section
->output_section
->vma
7312 + input_section
->output_offset
+ rel
->r_offset
;
7313 bfd_vma sb
= 0; /* See note above. */
7315 bfd_signed_vma signed_value
;
7318 /* Determine which groups of bits to calculate. */
7321 case R_ARM_LDR_PC_G0
:
7322 case R_ARM_LDR_SB_G0
:
7326 case R_ARM_LDR_PC_G1
:
7327 case R_ARM_LDR_SB_G1
:
7331 case R_ARM_LDR_PC_G2
:
7332 case R_ARM_LDR_SB_G2
:
7340 /* If REL, extract the addend from the insn. If RELA, it will
7341 have already been fetched for us. */
7342 if (globals
->use_rel
)
7344 int negative
= (insn
& (1 << 23)) ? 1 : -1;
7345 signed_addend
= negative
* (insn
& 0xfff);
7348 /* Compute the value (X) to go in the place. */
7349 if (r_type
== R_ARM_LDR_PC_G0
7350 || r_type
== R_ARM_LDR_PC_G1
7351 || r_type
== R_ARM_LDR_PC_G2
)
7353 signed_value
= value
- pc
+ signed_addend
;
7355 /* Section base relative. */
7356 signed_value
= value
- sb
+ signed_addend
;
7358 /* Calculate the value of the relevant G_{n-1} to obtain
7359 the residual at that stage. */
7360 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
7362 /* Check for overflow. */
7363 if (residual
>= 0x1000)
7365 (*_bfd_error_handler
)
7366 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7367 input_bfd
, input_section
,
7368 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7369 return bfd_reloc_overflow
;
7372 /* Mask out the value and U bit. */
7375 /* Set the U bit if the value to go in the place is non-negative. */
7376 if (signed_value
>= 0)
7379 /* Encode the offset. */
7382 bfd_put_32 (input_bfd
, insn
, hit_data
);
7384 return bfd_reloc_ok
;
7386 case R_ARM_LDRS_PC_G0
:
7387 case R_ARM_LDRS_PC_G1
:
7388 case R_ARM_LDRS_PC_G2
:
7389 case R_ARM_LDRS_SB_G0
:
7390 case R_ARM_LDRS_SB_G1
:
7391 case R_ARM_LDRS_SB_G2
:
7393 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7394 bfd_vma pc
= input_section
->output_section
->vma
7395 + input_section
->output_offset
+ rel
->r_offset
;
7396 bfd_vma sb
= 0; /* See note above. */
7398 bfd_signed_vma signed_value
;
7401 /* Determine which groups of bits to calculate. */
7404 case R_ARM_LDRS_PC_G0
:
7405 case R_ARM_LDRS_SB_G0
:
7409 case R_ARM_LDRS_PC_G1
:
7410 case R_ARM_LDRS_SB_G1
:
7414 case R_ARM_LDRS_PC_G2
:
7415 case R_ARM_LDRS_SB_G2
:
7423 /* If REL, extract the addend from the insn. If RELA, it will
7424 have already been fetched for us. */
7425 if (globals
->use_rel
)
7427 int negative
= (insn
& (1 << 23)) ? 1 : -1;
7428 signed_addend
= negative
* (((insn
& 0xf00) >> 4) + (insn
& 0xf));
7431 /* Compute the value (X) to go in the place. */
7432 if (r_type
== R_ARM_LDRS_PC_G0
7433 || r_type
== R_ARM_LDRS_PC_G1
7434 || r_type
== R_ARM_LDRS_PC_G2
)
7436 signed_value
= value
- pc
+ signed_addend
;
7438 /* Section base relative. */
7439 signed_value
= value
- sb
+ signed_addend
;
7441 /* Calculate the value of the relevant G_{n-1} to obtain
7442 the residual at that stage. */
7443 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
7445 /* Check for overflow. */
7446 if (residual
>= 0x100)
7448 (*_bfd_error_handler
)
7449 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7450 input_bfd
, input_section
,
7451 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7452 return bfd_reloc_overflow
;
7455 /* Mask out the value and U bit. */
7458 /* Set the U bit if the value to go in the place is non-negative. */
7459 if (signed_value
>= 0)
7462 /* Encode the offset. */
7463 insn
|= ((residual
& 0xf0) << 4) | (residual
& 0xf);
7465 bfd_put_32 (input_bfd
, insn
, hit_data
);
7467 return bfd_reloc_ok
;
7469 case R_ARM_LDC_PC_G0
:
7470 case R_ARM_LDC_PC_G1
:
7471 case R_ARM_LDC_PC_G2
:
7472 case R_ARM_LDC_SB_G0
:
7473 case R_ARM_LDC_SB_G1
:
7474 case R_ARM_LDC_SB_G2
:
7476 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7477 bfd_vma pc
= input_section
->output_section
->vma
7478 + input_section
->output_offset
+ rel
->r_offset
;
7479 bfd_vma sb
= 0; /* See note above. */
7481 bfd_signed_vma signed_value
;
7484 /* Determine which groups of bits to calculate. */
7487 case R_ARM_LDC_PC_G0
:
7488 case R_ARM_LDC_SB_G0
:
7492 case R_ARM_LDC_PC_G1
:
7493 case R_ARM_LDC_SB_G1
:
7497 case R_ARM_LDC_PC_G2
:
7498 case R_ARM_LDC_SB_G2
:
7506 /* If REL, extract the addend from the insn. If RELA, it will
7507 have already been fetched for us. */
7508 if (globals
->use_rel
)
7510 int negative
= (insn
& (1 << 23)) ? 1 : -1;
7511 signed_addend
= negative
* ((insn
& 0xff) << 2);
7514 /* Compute the value (X) to go in the place. */
7515 if (r_type
== R_ARM_LDC_PC_G0
7516 || r_type
== R_ARM_LDC_PC_G1
7517 || r_type
== R_ARM_LDC_PC_G2
)
7519 signed_value
= value
- pc
+ signed_addend
;
7521 /* Section base relative. */
7522 signed_value
= value
- sb
+ signed_addend
;
7524 /* Calculate the value of the relevant G_{n-1} to obtain
7525 the residual at that stage. */
7526 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
7528 /* Check for overflow. (The absolute value to go in the place must be
7529 divisible by four and, after having been divided by four, must
7530 fit in eight bits.) */
7531 if ((residual
& 0x3) != 0 || residual
>= 0x400)
7533 (*_bfd_error_handler
)
7534 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7535 input_bfd
, input_section
,
7536 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7537 return bfd_reloc_overflow
;
7540 /* Mask out the value and U bit. */
7543 /* Set the U bit if the value to go in the place is non-negative. */
7544 if (signed_value
>= 0)
7547 /* Encode the offset. */
7548 insn
|= residual
>> 2;
7550 bfd_put_32 (input_bfd
, insn
, hit_data
);
7552 return bfd_reloc_ok
;
7555 return bfd_reloc_notsupported
;
7559 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
7561 arm_add_to_rel (bfd
* abfd
,
7563 reloc_howto_type
* howto
,
7564 bfd_signed_vma increment
)
7566 bfd_signed_vma addend
;
7568 if (howto
->type
== R_ARM_THM_CALL
7569 || howto
->type
== R_ARM_THM_JUMP24
)
7571 int upper_insn
, lower_insn
;
7574 upper_insn
= bfd_get_16 (abfd
, address
);
7575 lower_insn
= bfd_get_16 (abfd
, address
+ 2);
7576 upper
= upper_insn
& 0x7ff;
7577 lower
= lower_insn
& 0x7ff;
7579 addend
= (upper
<< 12) | (lower
<< 1);
7580 addend
+= increment
;
7583 upper_insn
= (upper_insn
& 0xf800) | ((addend
>> 11) & 0x7ff);
7584 lower_insn
= (lower_insn
& 0xf800) | (addend
& 0x7ff);
7586 bfd_put_16 (abfd
, (bfd_vma
) upper_insn
, address
);
7587 bfd_put_16 (abfd
, (bfd_vma
) lower_insn
, address
+ 2);
7593 contents
= bfd_get_32 (abfd
, address
);
7595 /* Get the (signed) value from the instruction. */
7596 addend
= contents
& howto
->src_mask
;
7597 if (addend
& ((howto
->src_mask
+ 1) >> 1))
7599 bfd_signed_vma mask
;
7602 mask
&= ~ howto
->src_mask
;
7606 /* Add in the increment, (which is a byte value). */
7607 switch (howto
->type
)
7610 addend
+= increment
;
7617 addend
<<= howto
->size
;
7618 addend
+= increment
;
7620 /* Should we check for overflow here ? */
7622 /* Drop any undesired bits. */
7623 addend
>>= howto
->rightshift
;
7627 contents
= (contents
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
7629 bfd_put_32 (abfd
, contents
, address
);
7633 #define IS_ARM_TLS_RELOC(R_TYPE) \
7634 ((R_TYPE) == R_ARM_TLS_GD32 \
7635 || (R_TYPE) == R_ARM_TLS_LDO32 \
7636 || (R_TYPE) == R_ARM_TLS_LDM32 \
7637 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
7638 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
7639 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
7640 || (R_TYPE) == R_ARM_TLS_LE32 \
7641 || (R_TYPE) == R_ARM_TLS_IE32)
7643 /* Relocate an ARM ELF section. */
7646 elf32_arm_relocate_section (bfd
* output_bfd
,
7647 struct bfd_link_info
* info
,
7649 asection
* input_section
,
7650 bfd_byte
* contents
,
7651 Elf_Internal_Rela
* relocs
,
7652 Elf_Internal_Sym
* local_syms
,
7653 asection
** local_sections
)
7655 Elf_Internal_Shdr
*symtab_hdr
;
7656 struct elf_link_hash_entry
**sym_hashes
;
7657 Elf_Internal_Rela
*rel
;
7658 Elf_Internal_Rela
*relend
;
7660 struct elf32_arm_link_hash_table
* globals
;
7662 globals
= elf32_arm_hash_table (info
);
7664 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
7665 sym_hashes
= elf_sym_hashes (input_bfd
);
7668 relend
= relocs
+ input_section
->reloc_count
;
7669 for (; rel
< relend
; rel
++)
7672 reloc_howto_type
* howto
;
7673 unsigned long r_symndx
;
7674 Elf_Internal_Sym
* sym
;
7676 struct elf_link_hash_entry
* h
;
7678 bfd_reloc_status_type r
;
7681 bfd_boolean unresolved_reloc
= FALSE
;
7682 char *error_message
= NULL
;
7684 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7685 r_type
= ELF32_R_TYPE (rel
->r_info
);
7686 r_type
= arm_real_reloc_type (globals
, r_type
);
7688 if ( r_type
== R_ARM_GNU_VTENTRY
7689 || r_type
== R_ARM_GNU_VTINHERIT
)
7692 bfd_reloc
.howto
= elf32_arm_howto_from_type (r_type
);
7693 howto
= bfd_reloc
.howto
;
7699 if (r_symndx
< symtab_hdr
->sh_info
)
7701 sym
= local_syms
+ r_symndx
;
7702 sym_type
= ELF32_ST_TYPE (sym
->st_info
);
7703 sec
= local_sections
[r_symndx
];
7704 if (globals
->use_rel
)
7706 relocation
= (sec
->output_section
->vma
7707 + sec
->output_offset
7709 if (!info
->relocatable
7710 && (sec
->flags
& SEC_MERGE
)
7711 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
7714 bfd_vma addend
, value
;
7718 case R_ARM_MOVW_ABS_NC
:
7719 case R_ARM_MOVT_ABS
:
7720 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
7721 addend
= ((value
& 0xf0000) >> 4) | (value
& 0xfff);
7722 addend
= (addend
^ 0x8000) - 0x8000;
7725 case R_ARM_THM_MOVW_ABS_NC
:
7726 case R_ARM_THM_MOVT_ABS
:
7727 value
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
)
7729 value
|= bfd_get_16 (input_bfd
,
7730 contents
+ rel
->r_offset
+ 2);
7731 addend
= ((value
& 0xf7000) >> 4) | (value
& 0xff)
7732 | ((value
& 0x04000000) >> 15);
7733 addend
= (addend
^ 0x8000) - 0x8000;
7737 if (howto
->rightshift
7738 || (howto
->src_mask
& (howto
->src_mask
+ 1)))
7740 (*_bfd_error_handler
)
7741 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
7742 input_bfd
, input_section
,
7743 (long) rel
->r_offset
, howto
->name
);
7747 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
7749 /* Get the (signed) value from the instruction. */
7750 addend
= value
& howto
->src_mask
;
7751 if (addend
& ((howto
->src_mask
+ 1) >> 1))
7753 bfd_signed_vma mask
;
7756 mask
&= ~ howto
->src_mask
;
7764 _bfd_elf_rel_local_sym (output_bfd
, sym
, &msec
, addend
)
7766 addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
7768 /* Cases here must match those in the preceeding
7769 switch statement. */
7772 case R_ARM_MOVW_ABS_NC
:
7773 case R_ARM_MOVT_ABS
:
7774 value
= (value
& 0xfff0f000) | ((addend
& 0xf000) << 4)
7776 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
7779 case R_ARM_THM_MOVW_ABS_NC
:
7780 case R_ARM_THM_MOVT_ABS
:
7781 value
= (value
& 0xfbf08f00) | ((addend
& 0xf700) << 4)
7782 | (addend
& 0xff) | ((addend
& 0x0800) << 15);
7783 bfd_put_16 (input_bfd
, value
>> 16,
7784 contents
+ rel
->r_offset
);
7785 bfd_put_16 (input_bfd
, value
,
7786 contents
+ rel
->r_offset
+ 2);
7790 value
= (value
& ~ howto
->dst_mask
)
7791 | (addend
& howto
->dst_mask
);
7792 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
7798 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
7804 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
7805 r_symndx
, symtab_hdr
, sym_hashes
,
7807 unresolved_reloc
, warned
);
7812 if (sec
!= NULL
&& elf_discarded_section (sec
))
7814 /* For relocs against symbols from removed linkonce sections,
7815 or sections discarded by a linker script, we just want the
7816 section contents zeroed. Avoid any special processing. */
7817 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
7823 if (info
->relocatable
)
7825 /* This is a relocatable link. We don't have to change
7826 anything, unless the reloc is against a section symbol,
7827 in which case we have to adjust according to where the
7828 section symbol winds up in the output section. */
7829 if (sym
!= NULL
&& ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
7831 if (globals
->use_rel
)
7832 arm_add_to_rel (input_bfd
, contents
+ rel
->r_offset
,
7833 howto
, (bfd_signed_vma
) sec
->output_offset
);
7835 rel
->r_addend
+= sec
->output_offset
;
7841 name
= h
->root
.root
.string
;
7844 name
= (bfd_elf_string_from_elf_section
7845 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
7846 if (name
== NULL
|| *name
== '\0')
7847 name
= bfd_section_name (input_bfd
, sec
);
7851 && r_type
!= R_ARM_NONE
7853 || h
->root
.type
== bfd_link_hash_defined
7854 || h
->root
.type
== bfd_link_hash_defweak
)
7855 && IS_ARM_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
7857 (*_bfd_error_handler
)
7858 ((sym_type
== STT_TLS
7859 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
7860 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
7863 (long) rel
->r_offset
,
7868 r
= elf32_arm_final_link_relocate (howto
, input_bfd
, output_bfd
,
7869 input_section
, contents
, rel
,
7870 relocation
, info
, sec
, name
,
7871 (h
? ELF_ST_TYPE (h
->type
) :
7872 ELF_ST_TYPE (sym
->st_info
)), h
,
7873 &unresolved_reloc
, &error_message
);
7875 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
7876 because such sections are not SEC_ALLOC and thus ld.so will
7877 not process them. */
7878 if (unresolved_reloc
7879 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
7882 (*_bfd_error_handler
)
7883 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7886 (long) rel
->r_offset
,
7888 h
->root
.root
.string
);
7892 if (r
!= bfd_reloc_ok
)
7896 case bfd_reloc_overflow
:
7897 /* If the overflowing reloc was to an undefined symbol,
7898 we have already printed one error message and there
7899 is no point complaining again. */
7901 h
->root
.type
!= bfd_link_hash_undefined
)
7902 && (!((*info
->callbacks
->reloc_overflow
)
7903 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
7904 (bfd_vma
) 0, input_bfd
, input_section
,
7909 case bfd_reloc_undefined
:
7910 if (!((*info
->callbacks
->undefined_symbol
)
7911 (info
, name
, input_bfd
, input_section
,
7912 rel
->r_offset
, TRUE
)))
7916 case bfd_reloc_outofrange
:
7917 error_message
= _("out of range");
7920 case bfd_reloc_notsupported
:
7921 error_message
= _("unsupported relocation");
7924 case bfd_reloc_dangerous
:
7925 /* error_message should already be set. */
7929 error_message
= _("unknown error");
7933 BFD_ASSERT (error_message
!= NULL
);
7934 if (!((*info
->callbacks
->reloc_dangerous
)
7935 (info
, error_message
, input_bfd
, input_section
,
7946 /* Set the right machine number. */
7949 elf32_arm_object_p (bfd
*abfd
)
7953 mach
= bfd_arm_get_mach_from_notes (abfd
, ARM_NOTE_SECTION
);
7955 if (mach
!= bfd_mach_arm_unknown
)
7956 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
7958 else if (elf_elfheader (abfd
)->e_flags
& EF_ARM_MAVERICK_FLOAT
)
7959 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, bfd_mach_arm_ep9312
);
7962 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
7967 /* Function to keep ARM specific flags in the ELF header. */
7970 elf32_arm_set_private_flags (bfd
*abfd
, flagword flags
)
7972 if (elf_flags_init (abfd
)
7973 && elf_elfheader (abfd
)->e_flags
!= flags
)
7975 if (EF_ARM_EABI_VERSION (flags
) == EF_ARM_EABI_UNKNOWN
)
7977 if (flags
& EF_ARM_INTERWORK
)
7978 (*_bfd_error_handler
)
7979 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
7983 (_("Warning: Clearing the interworking flag of %B due to outside request"),
7989 elf_elfheader (abfd
)->e_flags
= flags
;
7990 elf_flags_init (abfd
) = TRUE
;
7996 /* Copy backend specific data from one object module to another. */
7999 elf32_arm_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
8004 if (! is_arm_elf (ibfd
) || ! is_arm_elf (obfd
))
8007 in_flags
= elf_elfheader (ibfd
)->e_flags
;
8008 out_flags
= elf_elfheader (obfd
)->e_flags
;
8010 if (elf_flags_init (obfd
)
8011 && EF_ARM_EABI_VERSION (out_flags
) == EF_ARM_EABI_UNKNOWN
8012 && in_flags
!= out_flags
)
8014 /* Cannot mix APCS26 and APCS32 code. */
8015 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
8018 /* Cannot mix float APCS and non-float APCS code. */
8019 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
8022 /* If the src and dest have different interworking flags
8023 then turn off the interworking bit. */
8024 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
8026 if (out_flags
& EF_ARM_INTERWORK
)
8028 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
8031 in_flags
&= ~EF_ARM_INTERWORK
;
8034 /* Likewise for PIC, though don't warn for this case. */
8035 if ((in_flags
& EF_ARM_PIC
) != (out_flags
& EF_ARM_PIC
))
8036 in_flags
&= ~EF_ARM_PIC
;
8039 elf_elfheader (obfd
)->e_flags
= in_flags
;
8040 elf_flags_init (obfd
) = TRUE
;
8042 /* Also copy the EI_OSABI field. */
8043 elf_elfheader (obfd
)->e_ident
[EI_OSABI
] =
8044 elf_elfheader (ibfd
)->e_ident
[EI_OSABI
];
8046 /* Copy object attributes. */
8047 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
8052 /* Values for Tag_ABI_PCS_R9_use. */
8061 /* Values for Tag_ABI_PCS_RW_data. */
8064 AEABI_PCS_RW_data_absolute
,
8065 AEABI_PCS_RW_data_PCrel
,
8066 AEABI_PCS_RW_data_SBrel
,
8067 AEABI_PCS_RW_data_unused
8070 /* Values for Tag_ABI_enum_size. */
8076 AEABI_enum_forced_wide
8079 /* Determine whether an object attribute tag takes an integer, a
8083 elf32_arm_obj_attrs_arg_type (int tag
)
8085 if (tag
== Tag_compatibility
)
8087 else if (tag
== 4 || tag
== 5)
8092 return (tag
& 1) != 0 ? 2 : 1;
8095 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
8096 are conflicting attributes. */
8099 elf32_arm_merge_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
8101 obj_attribute
*in_attr
;
8102 obj_attribute
*out_attr
;
8103 obj_attribute_list
*in_list
;
8104 /* Some tags have 0 = don't care, 1 = strong requirement,
8105 2 = weak requirement. */
8106 static const int order_312
[3] = {3, 1, 2};
8107 /* For use with Tag_VFP_arch. */
8108 static const int order_01243
[5] = {0, 1, 2, 4, 3};
8111 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
8113 /* This is the first object. Copy the attributes. */
8114 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
8116 /* Use the Tag_null value to indicate the attributes have been
8118 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
8123 in_attr
= elf_known_obj_attributes_proc (ibfd
);
8124 out_attr
= elf_known_obj_attributes_proc (obfd
);
8125 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
8126 if (in_attr
[Tag_ABI_VFP_args
].i
!= out_attr
[Tag_ABI_VFP_args
].i
)
8128 /* Ignore mismatches if teh object doesn't use floating point. */
8129 if (out_attr
[Tag_ABI_FP_number_model
].i
== 0)
8130 out_attr
[Tag_ABI_VFP_args
].i
= in_attr
[Tag_ABI_VFP_args
].i
;
8131 else if (in_attr
[Tag_ABI_FP_number_model
].i
!= 0)
8134 (_("ERROR: %B uses VFP register arguments, %B does not"),
8140 for (i
= 4; i
< NUM_KNOWN_OBJ_ATTRIBUTES
; i
++)
8142 /* Merge this attribute with existing attributes. */
8145 case Tag_CPU_raw_name
:
8147 /* Use whichever has the greatest architecture requirements. We
8148 won't necessarily have both the above tags, so make sure input
8149 name is non-NULL. */
8150 if (in_attr
[Tag_CPU_arch
].i
> out_attr
[Tag_CPU_arch
].i
8152 out_attr
[i
].s
= _bfd_elf_attr_strdup (obfd
, in_attr
[i
].s
);
8155 case Tag_ABI_optimization_goals
:
8156 case Tag_ABI_FP_optimization_goals
:
8157 /* Use the first value seen. */
8161 case Tag_ARM_ISA_use
:
8162 case Tag_THUMB_ISA_use
:
8165 /* ??? Do NEON and WMMX conflict? */
8166 case Tag_ABI_FP_rounding
:
8167 case Tag_ABI_FP_denormal
:
8168 case Tag_ABI_FP_exceptions
:
8169 case Tag_ABI_FP_user_exceptions
:
8170 case Tag_ABI_FP_number_model
:
8171 case Tag_ABI_align8_preserved
:
8172 case Tag_ABI_HardFP_use
:
8173 /* Use the largest value specified. */
8174 if (in_attr
[i
].i
> out_attr
[i
].i
)
8175 out_attr
[i
].i
= in_attr
[i
].i
;
8178 case Tag_CPU_arch_profile
:
8179 /* Warn if conflicting architecture profiles used. */
8180 if (out_attr
[i
].i
&& in_attr
[i
].i
&& in_attr
[i
].i
!= out_attr
[i
].i
)
8183 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
8184 ibfd
, in_attr
[i
].i
, out_attr
[i
].i
);
8188 out_attr
[i
].i
= in_attr
[i
].i
;
8191 if (in_attr
[i
].i
> 4 || out_attr
[i
].i
> 4
8192 || order_01243
[in_attr
[i
].i
] > order_01243
[out_attr
[i
].i
])
8193 out_attr
[i
].i
= in_attr
[i
].i
;
8195 case Tag_PCS_config
:
8196 if (out_attr
[i
].i
== 0)
8197 out_attr
[i
].i
= in_attr
[i
].i
;
8198 else if (in_attr
[i
].i
!= 0 && out_attr
[i
].i
!= 0)
8200 /* It's sometimes ok to mix different configs, so this is only
8203 (_("Warning: %B: Conflicting platform configuration"), ibfd
);
8206 case Tag_ABI_PCS_R9_use
:
8207 if (in_attr
[i
].i
!= out_attr
[i
].i
8208 && out_attr
[i
].i
!= AEABI_R9_unused
8209 && in_attr
[i
].i
!= AEABI_R9_unused
)
8212 (_("ERROR: %B: Conflicting use of R9"), ibfd
);
8215 if (out_attr
[i
].i
== AEABI_R9_unused
)
8216 out_attr
[i
].i
= in_attr
[i
].i
;
8218 case Tag_ABI_PCS_RW_data
:
8219 if (in_attr
[i
].i
== AEABI_PCS_RW_data_SBrel
8220 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_SB
8221 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_unused
)
8224 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
8228 /* Use the smallest value specified. */
8229 if (in_attr
[i
].i
< out_attr
[i
].i
)
8230 out_attr
[i
].i
= in_attr
[i
].i
;
8232 case Tag_ABI_PCS_RO_data
:
8233 /* Use the smallest value specified. */
8234 if (in_attr
[i
].i
< out_attr
[i
].i
)
8235 out_attr
[i
].i
= in_attr
[i
].i
;
8237 case Tag_ABI_PCS_GOT_use
:
8238 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
8239 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
8240 out_attr
[i
].i
= in_attr
[i
].i
;
8242 case Tag_ABI_PCS_wchar_t
:
8243 if (out_attr
[i
].i
&& in_attr
[i
].i
&& out_attr
[i
].i
!= in_attr
[i
].i
)
8246 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd
);
8250 out_attr
[i
].i
= in_attr
[i
].i
;
8252 case Tag_ABI_align8_needed
:
8253 /* ??? Check against Tag_ABI_align8_preserved. */
8254 if (in_attr
[i
].i
> 2 || out_attr
[i
].i
> 2
8255 || order_312
[in_attr
[i
].i
] < order_312
[out_attr
[i
].i
])
8256 out_attr
[i
].i
= in_attr
[i
].i
;
8258 case Tag_ABI_enum_size
:
8259 if (in_attr
[i
].i
!= AEABI_enum_unused
)
8261 if (out_attr
[i
].i
== AEABI_enum_unused
8262 || out_attr
[i
].i
== AEABI_enum_forced_wide
)
8264 /* The existing object is compatible with anything.
8265 Use whatever requirements the new object has. */
8266 out_attr
[i
].i
= in_attr
[i
].i
;
8268 else if (in_attr
[i
].i
!= AEABI_enum_forced_wide
8269 && out_attr
[i
].i
!= in_attr
[i
].i
8270 && !elf_arm_tdata (obfd
)->no_enum_size_warning
)
8272 const char *aeabi_enum_names
[] =
8273 { "", "variable-size", "32-bit", "" };
8275 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
8276 ibfd
, aeabi_enum_names
[in_attr
[i
].i
],
8277 aeabi_enum_names
[out_attr
[i
].i
]);
8281 case Tag_ABI_VFP_args
:
8284 case Tag_ABI_WMMX_args
:
8285 if (in_attr
[i
].i
!= out_attr
[i
].i
)
8288 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
8293 default: /* All known attributes should be explicitly covered. */
8297 if (in_attr
[i
].type
&& !out_attr
[i
].type
)
8298 switch (in_attr
[i
].type
)
8302 out_attr
[i
].type
= 1;
8307 out_attr
[i
].type
= 2;
8315 /* Merge Tag_compatibility attributes and any common GNU ones. */
8316 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
8318 /* Check for any attributes not known on ARM. */
8319 in_list
= elf_other_obj_attributes_proc (ibfd
);
8320 while (in_list
&& in_list
->tag
== Tag_compatibility
)
8321 in_list
= in_list
->next
;
8323 for (; in_list
; in_list
= in_list
->next
)
8325 if ((in_list
->tag
& 128) < 64)
8328 (_("Warning: %B: Unknown EABI object attribute %d"),
8329 ibfd
, in_list
->tag
);
8337 /* Return TRUE if the two EABI versions are incompatible. */
8340 elf32_arm_versions_compatible (unsigned iver
, unsigned over
)
8342 /* v4 and v5 are the same spec before and after it was released,
8343 so allow mixing them. */
8344 if ((iver
== EF_ARM_EABI_VER4
&& over
== EF_ARM_EABI_VER5
)
8345 || (iver
== EF_ARM_EABI_VER5
&& over
== EF_ARM_EABI_VER4
))
8348 return (iver
== over
);
8351 /* Merge backend specific data from an object file to the output
8352 object file when linking. */
8355 elf32_arm_merge_private_bfd_data (bfd
* ibfd
, bfd
* obfd
)
8359 bfd_boolean flags_compatible
= TRUE
;
8362 /* Check if we have the same endianess. */
8363 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
8366 if (! is_arm_elf (ibfd
) || ! is_arm_elf (obfd
))
8369 if (!elf32_arm_merge_eabi_attributes (ibfd
, obfd
))
8372 /* The input BFD must have had its flags initialised. */
8373 /* The following seems bogus to me -- The flags are initialized in
8374 the assembler but I don't think an elf_flags_init field is
8375 written into the object. */
8376 /* BFD_ASSERT (elf_flags_init (ibfd)); */
8378 in_flags
= elf_elfheader (ibfd
)->e_flags
;
8379 out_flags
= elf_elfheader (obfd
)->e_flags
;
8381 /* In theory there is no reason why we couldn't handle this. However
8382 in practice it isn't even close to working and there is no real
8383 reason to want it. */
8384 if (EF_ARM_EABI_VERSION (in_flags
) >= EF_ARM_EABI_VER4
8385 && (in_flags
& EF_ARM_BE8
))
8387 _bfd_error_handler (_("ERROR: %B is already in final BE8 format"),
8392 if (!elf_flags_init (obfd
))
8394 /* If the input is the default architecture and had the default
8395 flags then do not bother setting the flags for the output
8396 architecture, instead allow future merges to do this. If no
8397 future merges ever set these flags then they will retain their
8398 uninitialised values, which surprise surprise, correspond
8399 to the default values. */
8400 if (bfd_get_arch_info (ibfd
)->the_default
8401 && elf_elfheader (ibfd
)->e_flags
== 0)
8404 elf_flags_init (obfd
) = TRUE
;
8405 elf_elfheader (obfd
)->e_flags
= in_flags
;
8407 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
8408 && bfd_get_arch_info (obfd
)->the_default
)
8409 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
), bfd_get_mach (ibfd
));
8414 /* Determine what should happen if the input ARM architecture
8415 does not match the output ARM architecture. */
8416 if (! bfd_arm_merge_machines (ibfd
, obfd
))
8419 /* Identical flags must be compatible. */
8420 if (in_flags
== out_flags
)
8423 /* Check to see if the input BFD actually contains any sections. If
8424 not, its flags may not have been initialised either, but it
8425 cannot actually cause any incompatiblity. Do not short-circuit
8426 dynamic objects; their section list may be emptied by
8427 elf_link_add_object_symbols.
8429 Also check to see if there are no code sections in the input.
8430 In this case there is no need to check for code specific flags.
8431 XXX - do we need to worry about floating-point format compatability
8432 in data sections ? */
8433 if (!(ibfd
->flags
& DYNAMIC
))
8435 bfd_boolean null_input_bfd
= TRUE
;
8436 bfd_boolean only_data_sections
= TRUE
;
8438 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8440 /* Ignore synthetic glue sections. */
8441 if (strcmp (sec
->name
, ".glue_7")
8442 && strcmp (sec
->name
, ".glue_7t"))
8444 if ((bfd_get_section_flags (ibfd
, sec
)
8445 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
8446 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
8447 only_data_sections
= FALSE
;
8449 null_input_bfd
= FALSE
;
8454 if (null_input_bfd
|| only_data_sections
)
8458 /* Complain about various flag mismatches. */
8459 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags
),
8460 EF_ARM_EABI_VERSION (out_flags
)))
8463 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
8465 (in_flags
& EF_ARM_EABIMASK
) >> 24,
8466 (out_flags
& EF_ARM_EABIMASK
) >> 24);
8470 /* Not sure what needs to be checked for EABI versions >= 1. */
8471 /* VxWorks libraries do not use these flags. */
8472 if (get_elf_backend_data (obfd
) != &elf32_arm_vxworks_bed
8473 && get_elf_backend_data (ibfd
) != &elf32_arm_vxworks_bed
8474 && EF_ARM_EABI_VERSION (in_flags
) == EF_ARM_EABI_UNKNOWN
)
8476 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
8479 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
8481 in_flags
& EF_ARM_APCS_26
? 26 : 32,
8482 out_flags
& EF_ARM_APCS_26
? 26 : 32);
8483 flags_compatible
= FALSE
;
8486 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
8488 if (in_flags
& EF_ARM_APCS_FLOAT
)
8490 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
8494 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
8497 flags_compatible
= FALSE
;
8500 if ((in_flags
& EF_ARM_VFP_FLOAT
) != (out_flags
& EF_ARM_VFP_FLOAT
))
8502 if (in_flags
& EF_ARM_VFP_FLOAT
)
8504 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
8508 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
8511 flags_compatible
= FALSE
;
8514 if ((in_flags
& EF_ARM_MAVERICK_FLOAT
) != (out_flags
& EF_ARM_MAVERICK_FLOAT
))
8516 if (in_flags
& EF_ARM_MAVERICK_FLOAT
)
8518 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
8522 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
8525 flags_compatible
= FALSE
;
8528 #ifdef EF_ARM_SOFT_FLOAT
8529 if ((in_flags
& EF_ARM_SOFT_FLOAT
) != (out_flags
& EF_ARM_SOFT_FLOAT
))
8531 /* We can allow interworking between code that is VFP format
8532 layout, and uses either soft float or integer regs for
8533 passing floating point arguments and results. We already
8534 know that the APCS_FLOAT flags match; similarly for VFP
8536 if ((in_flags
& EF_ARM_APCS_FLOAT
) != 0
8537 || (in_flags
& EF_ARM_VFP_FLOAT
) == 0)
8539 if (in_flags
& EF_ARM_SOFT_FLOAT
)
8541 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
8545 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
8548 flags_compatible
= FALSE
;
8553 /* Interworking mismatch is only a warning. */
8554 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
8556 if (in_flags
& EF_ARM_INTERWORK
)
8559 (_("Warning: %B supports interworking, whereas %B does not"),
8565 (_("Warning: %B does not support interworking, whereas %B does"),
8571 return flags_compatible
;
8574 /* Display the flags field. */
8577 elf32_arm_print_private_bfd_data (bfd
*abfd
, void * ptr
)
8579 FILE * file
= (FILE *) ptr
;
8580 unsigned long flags
;
8582 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
8584 /* Print normal ELF private data. */
8585 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
8587 flags
= elf_elfheader (abfd
)->e_flags
;
8588 /* Ignore init flag - it may not be set, despite the flags field
8589 containing valid data. */
8591 /* xgettext:c-format */
8592 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
8594 switch (EF_ARM_EABI_VERSION (flags
))
8596 case EF_ARM_EABI_UNKNOWN
:
8597 /* The following flag bits are GNU extensions and not part of the
8598 official ARM ELF extended ABI. Hence they are only decoded if
8599 the EABI version is not set. */
8600 if (flags
& EF_ARM_INTERWORK
)
8601 fprintf (file
, _(" [interworking enabled]"));
8603 if (flags
& EF_ARM_APCS_26
)
8604 fprintf (file
, " [APCS-26]");
8606 fprintf (file
, " [APCS-32]");
8608 if (flags
& EF_ARM_VFP_FLOAT
)
8609 fprintf (file
, _(" [VFP float format]"));
8610 else if (flags
& EF_ARM_MAVERICK_FLOAT
)
8611 fprintf (file
, _(" [Maverick float format]"));
8613 fprintf (file
, _(" [FPA float format]"));
8615 if (flags
& EF_ARM_APCS_FLOAT
)
8616 fprintf (file
, _(" [floats passed in float registers]"));
8618 if (flags
& EF_ARM_PIC
)
8619 fprintf (file
, _(" [position independent]"));
8621 if (flags
& EF_ARM_NEW_ABI
)
8622 fprintf (file
, _(" [new ABI]"));
8624 if (flags
& EF_ARM_OLD_ABI
)
8625 fprintf (file
, _(" [old ABI]"));
8627 if (flags
& EF_ARM_SOFT_FLOAT
)
8628 fprintf (file
, _(" [software FP]"));
8630 flags
&= ~(EF_ARM_INTERWORK
| EF_ARM_APCS_26
| EF_ARM_APCS_FLOAT
8631 | EF_ARM_PIC
| EF_ARM_NEW_ABI
| EF_ARM_OLD_ABI
8632 | EF_ARM_SOFT_FLOAT
| EF_ARM_VFP_FLOAT
8633 | EF_ARM_MAVERICK_FLOAT
);
8636 case EF_ARM_EABI_VER1
:
8637 fprintf (file
, _(" [Version1 EABI]"));
8639 if (flags
& EF_ARM_SYMSARESORTED
)
8640 fprintf (file
, _(" [sorted symbol table]"));
8642 fprintf (file
, _(" [unsorted symbol table]"));
8644 flags
&= ~ EF_ARM_SYMSARESORTED
;
8647 case EF_ARM_EABI_VER2
:
8648 fprintf (file
, _(" [Version2 EABI]"));
8650 if (flags
& EF_ARM_SYMSARESORTED
)
8651 fprintf (file
, _(" [sorted symbol table]"));
8653 fprintf (file
, _(" [unsorted symbol table]"));
8655 if (flags
& EF_ARM_DYNSYMSUSESEGIDX
)
8656 fprintf (file
, _(" [dynamic symbols use segment index]"));
8658 if (flags
& EF_ARM_MAPSYMSFIRST
)
8659 fprintf (file
, _(" [mapping symbols precede others]"));
8661 flags
&= ~(EF_ARM_SYMSARESORTED
| EF_ARM_DYNSYMSUSESEGIDX
8662 | EF_ARM_MAPSYMSFIRST
);
8665 case EF_ARM_EABI_VER3
:
8666 fprintf (file
, _(" [Version3 EABI]"));
8669 case EF_ARM_EABI_VER4
:
8670 fprintf (file
, _(" [Version4 EABI]"));
8673 case EF_ARM_EABI_VER5
:
8674 fprintf (file
, _(" [Version5 EABI]"));
8676 if (flags
& EF_ARM_BE8
)
8677 fprintf (file
, _(" [BE8]"));
8679 if (flags
& EF_ARM_LE8
)
8680 fprintf (file
, _(" [LE8]"));
8682 flags
&= ~(EF_ARM_LE8
| EF_ARM_BE8
);
8686 fprintf (file
, _(" <EABI version unrecognised>"));
8690 flags
&= ~ EF_ARM_EABIMASK
;
8692 if (flags
& EF_ARM_RELEXEC
)
8693 fprintf (file
, _(" [relocatable executable]"));
8695 if (flags
& EF_ARM_HASENTRY
)
8696 fprintf (file
, _(" [has entry point]"));
8698 flags
&= ~ (EF_ARM_RELEXEC
| EF_ARM_HASENTRY
);
8701 fprintf (file
, _("<Unrecognised flag bits set>"));
8709 elf32_arm_get_symbol_type (Elf_Internal_Sym
* elf_sym
, int type
)
8711 switch (ELF_ST_TYPE (elf_sym
->st_info
))
8714 return ELF_ST_TYPE (elf_sym
->st_info
);
8717 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
8718 This allows us to distinguish between data used by Thumb instructions
8719 and non-data (which is probably code) inside Thumb regions of an
8721 if (type
!= STT_OBJECT
&& type
!= STT_TLS
)
8722 return ELF_ST_TYPE (elf_sym
->st_info
);
8733 elf32_arm_gc_mark_hook (asection
*sec
,
8734 struct bfd_link_info
*info
,
8735 Elf_Internal_Rela
*rel
,
8736 struct elf_link_hash_entry
*h
,
8737 Elf_Internal_Sym
*sym
)
8740 switch (ELF32_R_TYPE (rel
->r_info
))
8742 case R_ARM_GNU_VTINHERIT
:
8743 case R_ARM_GNU_VTENTRY
:
8747 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
8750 /* Update the got entry reference counts for the section being removed. */
8753 elf32_arm_gc_sweep_hook (bfd
* abfd
,
8754 struct bfd_link_info
* info
,
8756 const Elf_Internal_Rela
* relocs
)
8758 Elf_Internal_Shdr
*symtab_hdr
;
8759 struct elf_link_hash_entry
**sym_hashes
;
8760 bfd_signed_vma
*local_got_refcounts
;
8761 const Elf_Internal_Rela
*rel
, *relend
;
8762 struct elf32_arm_link_hash_table
* globals
;
8764 if (info
->relocatable
)
8767 globals
= elf32_arm_hash_table (info
);
8769 elf_section_data (sec
)->local_dynrel
= NULL
;
8771 symtab_hdr
= & elf_symtab_hdr (abfd
);
8772 sym_hashes
= elf_sym_hashes (abfd
);
8773 local_got_refcounts
= elf_local_got_refcounts (abfd
);
8775 check_use_blx (globals
);
8777 relend
= relocs
+ sec
->reloc_count
;
8778 for (rel
= relocs
; rel
< relend
; rel
++)
8780 unsigned long r_symndx
;
8781 struct elf_link_hash_entry
*h
= NULL
;
8784 r_symndx
= ELF32_R_SYM (rel
->r_info
);
8785 if (r_symndx
>= symtab_hdr
->sh_info
)
8787 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8788 while (h
->root
.type
== bfd_link_hash_indirect
8789 || h
->root
.type
== bfd_link_hash_warning
)
8790 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8793 r_type
= ELF32_R_TYPE (rel
->r_info
);
8794 r_type
= arm_real_reloc_type (globals
, r_type
);
8798 case R_ARM_GOT_PREL
:
8799 case R_ARM_TLS_GD32
:
8800 case R_ARM_TLS_IE32
:
8803 if (h
->got
.refcount
> 0)
8804 h
->got
.refcount
-= 1;
8806 else if (local_got_refcounts
!= NULL
)
8808 if (local_got_refcounts
[r_symndx
] > 0)
8809 local_got_refcounts
[r_symndx
] -= 1;
8813 case R_ARM_TLS_LDM32
:
8814 elf32_arm_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
8818 case R_ARM_ABS32_NOI
:
8820 case R_ARM_REL32_NOI
:
8826 case R_ARM_THM_CALL
:
8827 case R_ARM_THM_JUMP24
:
8828 case R_ARM_THM_JUMP19
:
8829 case R_ARM_MOVW_ABS_NC
:
8830 case R_ARM_MOVT_ABS
:
8831 case R_ARM_MOVW_PREL_NC
:
8832 case R_ARM_MOVT_PREL
:
8833 case R_ARM_THM_MOVW_ABS_NC
:
8834 case R_ARM_THM_MOVT_ABS
:
8835 case R_ARM_THM_MOVW_PREL_NC
:
8836 case R_ARM_THM_MOVT_PREL
:
8837 /* Should the interworking branches be here also? */
8841 struct elf32_arm_link_hash_entry
*eh
;
8842 struct elf32_arm_relocs_copied
**pp
;
8843 struct elf32_arm_relocs_copied
*p
;
8845 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8847 if (h
->plt
.refcount
> 0)
8849 h
->plt
.refcount
-= 1;
8850 if (r_type
== R_ARM_THM_CALL
)
8851 eh
->plt_maybe_thumb_refcount
--;
8853 if (r_type
== R_ARM_THM_JUMP24
8854 || r_type
== R_ARM_THM_JUMP19
)
8855 eh
->plt_thumb_refcount
--;
8858 if (r_type
== R_ARM_ABS32
8859 || r_type
== R_ARM_REL32
8860 || r_type
== R_ARM_ABS32_NOI
8861 || r_type
== R_ARM_REL32_NOI
)
8863 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
;
8865 if (p
->section
== sec
)
8868 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32
8869 || ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32_NOI
)
8887 /* Look through the relocs for a section during the first phase. */
8890 elf32_arm_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
8891 asection
*sec
, const Elf_Internal_Rela
*relocs
)
8893 Elf_Internal_Shdr
*symtab_hdr
;
8894 struct elf_link_hash_entry
**sym_hashes
;
8895 const Elf_Internal_Rela
*rel
;
8896 const Elf_Internal_Rela
*rel_end
;
8899 bfd_vma
*local_got_offsets
;
8900 struct elf32_arm_link_hash_table
*htab
;
8901 bfd_boolean needs_plt
;
8903 if (info
->relocatable
)
8906 BFD_ASSERT (is_arm_elf (abfd
));
8908 htab
= elf32_arm_hash_table (info
);
8911 /* Create dynamic sections for relocatable executables so that we can
8912 copy relocations. */
8913 if (htab
->root
.is_relocatable_executable
8914 && ! htab
->root
.dynamic_sections_created
)
8916 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
8920 dynobj
= elf_hash_table (info
)->dynobj
;
8921 local_got_offsets
= elf_local_got_offsets (abfd
);
8923 symtab_hdr
= & elf_symtab_hdr (abfd
);
8924 sym_hashes
= elf_sym_hashes (abfd
);
8926 rel_end
= relocs
+ sec
->reloc_count
;
8927 for (rel
= relocs
; rel
< rel_end
; rel
++)
8929 struct elf_link_hash_entry
*h
;
8930 struct elf32_arm_link_hash_entry
*eh
;
8931 unsigned long r_symndx
;
8934 r_symndx
= ELF32_R_SYM (rel
->r_info
);
8935 r_type
= ELF32_R_TYPE (rel
->r_info
);
8936 r_type
= arm_real_reloc_type (htab
, r_type
);
8938 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
8940 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"), abfd
,
8945 if (r_symndx
< symtab_hdr
->sh_info
)
8949 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
8950 while (h
->root
.type
== bfd_link_hash_indirect
8951 || h
->root
.type
== bfd_link_hash_warning
)
8952 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8955 eh
= (struct elf32_arm_link_hash_entry
*) h
;
8960 case R_ARM_GOT_PREL
:
8961 case R_ARM_TLS_GD32
:
8962 case R_ARM_TLS_IE32
:
8963 /* This symbol requires a global offset table entry. */
8965 int tls_type
, old_tls_type
;
8969 case R_ARM_TLS_GD32
: tls_type
= GOT_TLS_GD
; break;
8970 case R_ARM_TLS_IE32
: tls_type
= GOT_TLS_IE
; break;
8971 default: tls_type
= GOT_NORMAL
; break;
8977 old_tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
8981 bfd_signed_vma
*local_got_refcounts
;
8983 /* This is a global offset table entry for a local symbol. */
8984 local_got_refcounts
= elf_local_got_refcounts (abfd
);
8985 if (local_got_refcounts
== NULL
)
8989 size
= symtab_hdr
->sh_info
;
8990 size
*= (sizeof (bfd_signed_vma
) + sizeof (char));
8991 local_got_refcounts
= bfd_zalloc (abfd
, size
);
8992 if (local_got_refcounts
== NULL
)
8994 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
8995 elf32_arm_local_got_tls_type (abfd
)
8996 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
8998 local_got_refcounts
[r_symndx
] += 1;
8999 old_tls_type
= elf32_arm_local_got_tls_type (abfd
) [r_symndx
];
9002 /* We will already have issued an error message if there is a
9003 TLS / non-TLS mismatch, based on the symbol type. We don't
9004 support any linker relaxations. So just combine any TLS
9006 if (old_tls_type
!= GOT_UNKNOWN
&& old_tls_type
!= GOT_NORMAL
9007 && tls_type
!= GOT_NORMAL
)
9008 tls_type
|= old_tls_type
;
9010 if (old_tls_type
!= tls_type
)
9013 elf32_arm_hash_entry (h
)->tls_type
= tls_type
;
9015 elf32_arm_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
9020 case R_ARM_TLS_LDM32
:
9021 if (r_type
== R_ARM_TLS_LDM32
)
9022 htab
->tls_ldm_got
.refcount
++;
9025 case R_ARM_GOTOFF32
:
9027 if (htab
->sgot
== NULL
)
9029 if (htab
->root
.dynobj
== NULL
)
9030 htab
->root
.dynobj
= abfd
;
9031 if (!create_got_section (htab
->root
.dynobj
, info
))
9037 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
9038 ldr __GOTT_INDEX__ offsets. */
9039 if (!htab
->vxworks_p
)
9048 case R_ARM_THM_CALL
:
9049 case R_ARM_THM_JUMP24
:
9050 case R_ARM_THM_JUMP19
:
9055 case R_ARM_ABS32_NOI
:
9057 case R_ARM_REL32_NOI
:
9058 case R_ARM_MOVW_ABS_NC
:
9059 case R_ARM_MOVT_ABS
:
9060 case R_ARM_MOVW_PREL_NC
:
9061 case R_ARM_MOVT_PREL
:
9062 case R_ARM_THM_MOVW_ABS_NC
:
9063 case R_ARM_THM_MOVT_ABS
:
9064 case R_ARM_THM_MOVW_PREL_NC
:
9065 case R_ARM_THM_MOVT_PREL
:
9069 /* Should the interworking branches be listed here? */
9072 /* If this reloc is in a read-only section, we might
9073 need a copy reloc. We can't check reliably at this
9074 stage whether the section is read-only, as input
9075 sections have not yet been mapped to output sections.
9076 Tentatively set the flag for now, and correct in
9077 adjust_dynamic_symbol. */
9081 /* We may need a .plt entry if the function this reloc
9082 refers to is in a different object. We can't tell for
9083 sure yet, because something later might force the
9088 /* If we create a PLT entry, this relocation will reference
9089 it, even if it's an ABS32 relocation. */
9090 h
->plt
.refcount
+= 1;
9092 /* It's too early to use htab->use_blx here, so we have to
9093 record possible blx references separately from
9094 relocs that definitely need a thumb stub. */
9096 if (r_type
== R_ARM_THM_CALL
)
9097 eh
->plt_maybe_thumb_refcount
+= 1;
9099 if (r_type
== R_ARM_THM_JUMP24
9100 || r_type
== R_ARM_THM_JUMP19
)
9101 eh
->plt_thumb_refcount
+= 1;
9104 /* If we are creating a shared library or relocatable executable,
9105 and this is a reloc against a global symbol, or a non PC
9106 relative reloc against a local symbol, then we need to copy
9107 the reloc into the shared library. However, if we are linking
9108 with -Bsymbolic, we do not need to copy a reloc against a
9109 global symbol which is defined in an object we are
9110 including in the link (i.e., DEF_REGULAR is set). At
9111 this point we have not seen all the input files, so it is
9112 possible that DEF_REGULAR is not set now but will be set
9113 later (it is never cleared). We account for that
9114 possibility below by storing information in the
9115 relocs_copied field of the hash table entry. */
9116 if ((info
->shared
|| htab
->root
.is_relocatable_executable
)
9117 && (sec
->flags
& SEC_ALLOC
) != 0
9118 && ((r_type
== R_ARM_ABS32
|| r_type
== R_ARM_ABS32_NOI
)
9119 || (h
!= NULL
&& ! h
->needs_plt
9120 && (! info
->symbolic
|| ! h
->def_regular
))))
9122 struct elf32_arm_relocs_copied
*p
, **head
;
9124 /* When creating a shared object, we must copy these
9125 reloc types into the output file. We create a reloc
9126 section in dynobj and make room for this reloc. */
9131 name
= (bfd_elf_string_from_elf_section
9133 elf_elfheader (abfd
)->e_shstrndx
,
9134 elf_section_data (sec
)->rel_hdr
.sh_name
));
9138 BFD_ASSERT (reloc_section_p (htab
, name
, sec
));
9140 sreloc
= bfd_get_section_by_name (dynobj
, name
);
9145 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
9146 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
9147 if ((sec
->flags
& SEC_ALLOC
) != 0
9148 /* BPABI objects never have dynamic
9149 relocations mapped. */
9150 && !htab
->symbian_p
)
9151 flags
|= SEC_ALLOC
| SEC_LOAD
;
9152 sreloc
= bfd_make_section_with_flags (dynobj
,
9156 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
9160 elf_section_data (sec
)->sreloc
= sreloc
;
9163 /* If this is a global symbol, we count the number of
9164 relocations we need for this symbol. */
9167 head
= &((struct elf32_arm_link_hash_entry
*) h
)->relocs_copied
;
9171 /* Track dynamic relocs needed for local syms too.
9172 We really need local syms available to do this
9178 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
9183 vpp
= &elf_section_data (s
)->local_dynrel
;
9184 head
= (struct elf32_arm_relocs_copied
**) vpp
;
9188 if (p
== NULL
|| p
->section
!= sec
)
9190 bfd_size_type amt
= sizeof *p
;
9192 p
= bfd_alloc (htab
->root
.dynobj
, amt
);
9202 if (r_type
== R_ARM_REL32
|| r_type
== R_ARM_REL32_NOI
)
9208 /* This relocation describes the C++ object vtable hierarchy.
9209 Reconstruct it for later use during GC. */
9210 case R_ARM_GNU_VTINHERIT
:
9211 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
9215 /* This relocation describes which C++ vtable entries are actually
9216 used. Record for later use during GC. */
9217 case R_ARM_GNU_VTENTRY
:
9218 BFD_ASSERT (h
!= NULL
);
9220 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
9229 /* Unwinding tables are not referenced directly. This pass marks them as
9230 required if the corresponding code section is marked. */
9233 elf32_arm_gc_mark_extra_sections (struct bfd_link_info
*info
,
9234 elf_gc_mark_hook_fn gc_mark_hook
)
9237 Elf_Internal_Shdr
**elf_shdrp
;
9240 /* Marking EH data may cause additional code sections to be marked,
9241 requiring multiple passes. */
9246 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
9250 if (! is_arm_elf (sub
))
9253 elf_shdrp
= elf_elfsections (sub
);
9254 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
9256 Elf_Internal_Shdr
*hdr
;
9258 hdr
= &elf_section_data (o
)->this_hdr
;
9259 if (hdr
->sh_type
== SHT_ARM_EXIDX
9261 && hdr
->sh_link
< elf_numsections (sub
)
9263 && elf_shdrp
[hdr
->sh_link
]->bfd_section
->gc_mark
)
9266 if (!_bfd_elf_gc_mark (info
, o
, gc_mark_hook
))
9276 /* Treat mapping symbols as special target symbols. */
9279 elf32_arm_is_target_special_symbol (bfd
* abfd ATTRIBUTE_UNUSED
, asymbol
* sym
)
9281 return bfd_is_arm_special_symbol_name (sym
->name
,
9282 BFD_ARM_SPECIAL_SYM_TYPE_ANY
);
9285 /* This is a copy of elf_find_function() from elf.c except that
9286 ARM mapping symbols are ignored when looking for function names
9287 and STT_ARM_TFUNC is considered to a function type. */
9290 arm_elf_find_function (bfd
* abfd ATTRIBUTE_UNUSED
,
9294 const char ** filename_ptr
,
9295 const char ** functionname_ptr
)
9297 const char * filename
= NULL
;
9298 asymbol
* func
= NULL
;
9299 bfd_vma low_func
= 0;
9302 for (p
= symbols
; *p
!= NULL
; p
++)
9306 q
= (elf_symbol_type
*) *p
;
9308 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
9313 filename
= bfd_asymbol_name (&q
->symbol
);
9318 /* Skip mapping symbols. */
9319 if ((q
->symbol
.flags
& BSF_LOCAL
)
9320 && bfd_is_arm_special_symbol_name (q
->symbol
.name
,
9321 BFD_ARM_SPECIAL_SYM_TYPE_ANY
))
9324 if (bfd_get_section (&q
->symbol
) == section
9325 && q
->symbol
.value
>= low_func
9326 && q
->symbol
.value
<= offset
)
9328 func
= (asymbol
*) q
;
9329 low_func
= q
->symbol
.value
;
9339 *filename_ptr
= filename
;
9340 if (functionname_ptr
)
9341 *functionname_ptr
= bfd_asymbol_name (func
);
9347 /* Find the nearest line to a particular section and offset, for error
9348 reporting. This code is a duplicate of the code in elf.c, except
9349 that it uses arm_elf_find_function. */
9352 elf32_arm_find_nearest_line (bfd
* abfd
,
9356 const char ** filename_ptr
,
9357 const char ** functionname_ptr
,
9358 unsigned int * line_ptr
)
9360 bfd_boolean found
= FALSE
;
9362 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
9364 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
9365 filename_ptr
, functionname_ptr
,
9367 & elf_tdata (abfd
)->dwarf2_find_line_info
))
9369 if (!*functionname_ptr
)
9370 arm_elf_find_function (abfd
, section
, symbols
, offset
,
9371 *filename_ptr
? NULL
: filename_ptr
,
9377 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
9378 & found
, filename_ptr
,
9379 functionname_ptr
, line_ptr
,
9380 & elf_tdata (abfd
)->line_info
))
9383 if (found
&& (*functionname_ptr
|| *line_ptr
))
9386 if (symbols
== NULL
)
9389 if (! arm_elf_find_function (abfd
, section
, symbols
, offset
,
9390 filename_ptr
, functionname_ptr
))
9398 elf32_arm_find_inliner_info (bfd
* abfd
,
9399 const char ** filename_ptr
,
9400 const char ** functionname_ptr
,
9401 unsigned int * line_ptr
)
9404 found
= _bfd_dwarf2_find_inliner_info (abfd
, filename_ptr
,
9405 functionname_ptr
, line_ptr
,
9406 & elf_tdata (abfd
)->dwarf2_find_line_info
);
9410 /* Adjust a symbol defined by a dynamic object and referenced by a
9411 regular object. The current definition is in some section of the
9412 dynamic object, but we're not including those sections. We have to
9413 change the definition to something the rest of the link can
9417 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info
* info
,
9418 struct elf_link_hash_entry
* h
)
9422 struct elf32_arm_link_hash_entry
* eh
;
9423 struct elf32_arm_link_hash_table
*globals
;
9425 globals
= elf32_arm_hash_table (info
);
9426 dynobj
= elf_hash_table (info
)->dynobj
;
9428 /* Make sure we know what is going on here. */
9429 BFD_ASSERT (dynobj
!= NULL
9431 || h
->u
.weakdef
!= NULL
9434 && !h
->def_regular
)));
9436 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9438 /* If this is a function, put it in the procedure linkage table. We
9439 will fill in the contents of the procedure linkage table later,
9440 when we know the address of the .got section. */
9441 if (h
->type
== STT_FUNC
|| h
->type
== STT_ARM_TFUNC
9444 if (h
->plt
.refcount
<= 0
9445 || SYMBOL_CALLS_LOCAL (info
, h
)
9446 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
9447 && h
->root
.type
== bfd_link_hash_undefweak
))
9449 /* This case can occur if we saw a PLT32 reloc in an input
9450 file, but the symbol was never referred to by a dynamic
9451 object, or if all references were garbage collected. In
9452 such a case, we don't actually need to build a procedure
9453 linkage table, and we can just do a PC24 reloc instead. */
9454 h
->plt
.offset
= (bfd_vma
) -1;
9455 eh
->plt_thumb_refcount
= 0;
9456 eh
->plt_maybe_thumb_refcount
= 0;
9464 /* It's possible that we incorrectly decided a .plt reloc was
9465 needed for an R_ARM_PC24 or similar reloc to a non-function sym
9466 in check_relocs. We can't decide accurately between function
9467 and non-function syms in check-relocs; Objects loaded later in
9468 the link may change h->type. So fix it now. */
9469 h
->plt
.offset
= (bfd_vma
) -1;
9470 eh
->plt_thumb_refcount
= 0;
9471 eh
->plt_maybe_thumb_refcount
= 0;
9474 /* If this is a weak symbol, and there is a real definition, the
9475 processor independent code will have arranged for us to see the
9476 real definition first, and we can just use the same value. */
9477 if (h
->u
.weakdef
!= NULL
)
9479 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
9480 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
9481 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
9482 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
9486 /* If there are no non-GOT references, we do not need a copy
9488 if (!h
->non_got_ref
)
9491 /* This is a reference to a symbol defined by a dynamic object which
9492 is not a function. */
9494 /* If we are creating a shared library, we must presume that the
9495 only references to the symbol are via the global offset table.
9496 For such cases we need not do anything here; the relocations will
9497 be handled correctly by relocate_section. Relocatable executables
9498 can reference data in shared objects directly, so we don't need to
9499 do anything here. */
9500 if (info
->shared
|| globals
->root
.is_relocatable_executable
)
9505 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
9506 h
->root
.root
.string
);
9510 /* We must allocate the symbol in our .dynbss section, which will
9511 become part of the .bss section of the executable. There will be
9512 an entry for this symbol in the .dynsym section. The dynamic
9513 object will contain position independent code, so all references
9514 from the dynamic object to this symbol will go through the global
9515 offset table. The dynamic linker will use the .dynsym entry to
9516 determine the address it must put in the global offset table, so
9517 both the dynamic object and the regular object will refer to the
9518 same memory location for the variable. */
9519 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
9520 BFD_ASSERT (s
!= NULL
);
9522 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
9523 copy the initial value out of the dynamic object and into the
9524 runtime process image. We need to remember the offset into the
9525 .rel(a).bss section we are going to use. */
9526 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
9530 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (globals
, ".bss"));
9531 BFD_ASSERT (srel
!= NULL
);
9532 srel
->size
+= RELOC_SIZE (globals
);
9536 return _bfd_elf_adjust_dynamic_copy (h
, s
);
9539 /* Allocate space in .plt, .got and associated reloc sections for
9543 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
9545 struct bfd_link_info
*info
;
9546 struct elf32_arm_link_hash_table
*htab
;
9547 struct elf32_arm_link_hash_entry
*eh
;
9548 struct elf32_arm_relocs_copied
*p
;
9549 bfd_signed_vma thumb_refs
;
9551 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9553 if (h
->root
.type
== bfd_link_hash_indirect
)
9556 if (h
->root
.type
== bfd_link_hash_warning
)
9557 /* When warning symbols are created, they **replace** the "real"
9558 entry in the hash table, thus we never get to see the real
9559 symbol in a hash traversal. So look at it now. */
9560 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9562 info
= (struct bfd_link_info
*) inf
;
9563 htab
= elf32_arm_hash_table (info
);
9565 if (htab
->root
.dynamic_sections_created
9566 && h
->plt
.refcount
> 0)
9568 /* Make sure this symbol is output as a dynamic symbol.
9569 Undefined weak syms won't yet be marked as dynamic. */
9570 if (h
->dynindx
== -1
9571 && !h
->forced_local
)
9573 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9578 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
9580 asection
*s
= htab
->splt
;
9582 /* If this is the first .plt entry, make room for the special
9585 s
->size
+= htab
->plt_header_size
;
9587 h
->plt
.offset
= s
->size
;
9589 /* If we will insert a Thumb trampoline before this PLT, leave room
9591 thumb_refs
= eh
->plt_thumb_refcount
;
9593 thumb_refs
+= eh
->plt_maybe_thumb_refcount
;
9597 h
->plt
.offset
+= PLT_THUMB_STUB_SIZE
;
9598 s
->size
+= PLT_THUMB_STUB_SIZE
;
9601 /* If this symbol is not defined in a regular file, and we are
9602 not generating a shared library, then set the symbol to this
9603 location in the .plt. This is required to make function
9604 pointers compare as equal between the normal executable and
9605 the shared library. */
9609 h
->root
.u
.def
.section
= s
;
9610 h
->root
.u
.def
.value
= h
->plt
.offset
;
9612 /* Make sure the function is not marked as Thumb, in case
9613 it is the target of an ABS32 relocation, which will
9614 point to the PLT entry. */
9615 if (ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
)
9616 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
9619 /* Make room for this entry. */
9620 s
->size
+= htab
->plt_entry_size
;
9622 if (!htab
->symbian_p
)
9624 /* We also need to make an entry in the .got.plt section, which
9625 will be placed in the .got section by the linker script. */
9626 eh
->plt_got_offset
= htab
->sgotplt
->size
;
9627 htab
->sgotplt
->size
+= 4;
9630 /* We also need to make an entry in the .rel(a).plt section. */
9631 htab
->srelplt
->size
+= RELOC_SIZE (htab
);
9633 /* VxWorks executables have a second set of relocations for
9634 each PLT entry. They go in a separate relocation section,
9635 which is processed by the kernel loader. */
9636 if (htab
->vxworks_p
&& !info
->shared
)
9638 /* There is a relocation for the initial PLT entry:
9639 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
9640 if (h
->plt
.offset
== htab
->plt_header_size
)
9641 htab
->srelplt2
->size
+= RELOC_SIZE (htab
);
9643 /* There are two extra relocations for each subsequent
9644 PLT entry: an R_ARM_32 relocation for the GOT entry,
9645 and an R_ARM_32 relocation for the PLT entry. */
9646 htab
->srelplt2
->size
+= RELOC_SIZE (htab
) * 2;
9651 h
->plt
.offset
= (bfd_vma
) -1;
9657 h
->plt
.offset
= (bfd_vma
) -1;
9661 if (h
->got
.refcount
> 0)
9665 int tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
9668 /* Make sure this symbol is output as a dynamic symbol.
9669 Undefined weak syms won't yet be marked as dynamic. */
9670 if (h
->dynindx
== -1
9671 && !h
->forced_local
)
9673 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9677 if (!htab
->symbian_p
)
9680 h
->got
.offset
= s
->size
;
9682 if (tls_type
== GOT_UNKNOWN
)
9685 if (tls_type
== GOT_NORMAL
)
9686 /* Non-TLS symbols need one GOT slot. */
9690 if (tls_type
& GOT_TLS_GD
)
9691 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
9693 if (tls_type
& GOT_TLS_IE
)
9694 /* R_ARM_TLS_IE32 needs one GOT slot. */
9698 dyn
= htab
->root
.dynamic_sections_created
;
9701 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
9703 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
9706 if (tls_type
!= GOT_NORMAL
9707 && (info
->shared
|| indx
!= 0)
9708 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
9709 || h
->root
.type
!= bfd_link_hash_undefweak
))
9711 if (tls_type
& GOT_TLS_IE
)
9712 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
9714 if (tls_type
& GOT_TLS_GD
)
9715 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
9717 if ((tls_type
& GOT_TLS_GD
) && indx
!= 0)
9718 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
9720 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
9721 || h
->root
.type
!= bfd_link_hash_undefweak
)
9723 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
9724 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
9728 h
->got
.offset
= (bfd_vma
) -1;
9730 /* Allocate stubs for exported Thumb functions on v4t. */
9731 if (!htab
->use_blx
&& h
->dynindx
!= -1
9733 && ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
9734 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
9736 struct elf_link_hash_entry
* th
;
9737 struct bfd_link_hash_entry
* bh
;
9738 struct elf_link_hash_entry
* myh
;
9742 /* Create a new symbol to regist the real location of the function. */
9743 s
= h
->root
.u
.def
.section
;
9744 sprintf (name
, "__real_%s", h
->root
.root
.string
);
9745 _bfd_generic_link_add_one_symbol (info
, s
->owner
,
9746 name
, BSF_GLOBAL
, s
,
9747 h
->root
.u
.def
.value
,
9748 NULL
, TRUE
, FALSE
, &bh
);
9750 myh
= (struct elf_link_hash_entry
*) bh
;
9751 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
9752 myh
->forced_local
= 1;
9753 eh
->export_glue
= myh
;
9754 th
= record_arm_to_thumb_glue (info
, h
);
9755 /* Point the symbol at the stub. */
9756 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
9757 h
->root
.u
.def
.section
= th
->root
.u
.def
.section
;
9758 h
->root
.u
.def
.value
= th
->root
.u
.def
.value
& ~1;
9761 if (eh
->relocs_copied
== NULL
)
9764 /* In the shared -Bsymbolic case, discard space allocated for
9765 dynamic pc-relative relocs against symbols which turn out to be
9766 defined in regular objects. For the normal shared case, discard
9767 space for pc-relative relocs that have become local due to symbol
9768 visibility changes. */
9770 if (info
->shared
|| htab
->root
.is_relocatable_executable
)
9772 /* The only relocs that use pc_count are R_ARM_REL32 and
9773 R_ARM_REL32_NOI, which will appear on something like
9774 ".long foo - .". We want calls to protected symbols to resolve
9775 directly to the function rather than going via the plt. If people
9776 want function pointer comparisons to work as expected then they
9777 should avoid writing assembly like ".long foo - .". */
9778 if (SYMBOL_CALLS_LOCAL (info
, h
))
9780 struct elf32_arm_relocs_copied
**pp
;
9782 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
; )
9784 p
->count
-= p
->pc_count
;
9793 if (elf32_arm_hash_table (info
)->vxworks_p
)
9795 struct elf32_arm_relocs_copied
**pp
;
9797 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
; )
9799 if (strcmp (p
->section
->output_section
->name
, ".tls_vars") == 0)
9806 /* Also discard relocs on undefined weak syms with non-default
9808 if (eh
->relocs_copied
!= NULL
9809 && h
->root
.type
== bfd_link_hash_undefweak
)
9811 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
9812 eh
->relocs_copied
= NULL
;
9814 /* Make sure undefined weak symbols are output as a dynamic
9816 else if (h
->dynindx
== -1
9817 && !h
->forced_local
)
9819 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9824 else if (htab
->root
.is_relocatable_executable
&& h
->dynindx
== -1
9825 && h
->root
.type
== bfd_link_hash_new
)
9827 /* Output absolute symbols so that we can create relocations
9828 against them. For normal symbols we output a relocation
9829 against the section that contains them. */
9830 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9837 /* For the non-shared case, discard space for relocs against
9838 symbols which turn out to need copy relocs or are not
9844 || (htab
->root
.dynamic_sections_created
9845 && (h
->root
.type
== bfd_link_hash_undefweak
9846 || h
->root
.type
== bfd_link_hash_undefined
))))
9848 /* Make sure this symbol is output as a dynamic symbol.
9849 Undefined weak syms won't yet be marked as dynamic. */
9850 if (h
->dynindx
== -1
9851 && !h
->forced_local
)
9853 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
9857 /* If that succeeded, we know we'll be keeping all the
9859 if (h
->dynindx
!= -1)
9863 eh
->relocs_copied
= NULL
;
9868 /* Finally, allocate space. */
9869 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
9871 asection
*sreloc
= elf_section_data (p
->section
)->sreloc
;
9872 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
9878 /* Find any dynamic relocs that apply to read-only sections. */
9881 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry
*h
, PTR inf
)
9883 struct elf32_arm_link_hash_entry
*eh
;
9884 struct elf32_arm_relocs_copied
*p
;
9886 if (h
->root
.type
== bfd_link_hash_warning
)
9887 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9889 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9890 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
9892 asection
*s
= p
->section
;
9894 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
9896 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
9898 info
->flags
|= DF_TEXTREL
;
9900 /* Not an error, just cut short the traversal. */
9908 bfd_elf32_arm_set_byteswap_code (struct bfd_link_info
*info
,
9911 struct elf32_arm_link_hash_table
*globals
;
9913 globals
= elf32_arm_hash_table (info
);
9914 globals
->byteswap_code
= byteswap_code
;
9917 /* Set the sizes of the dynamic sections. */
9920 elf32_arm_size_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
9921 struct bfd_link_info
* info
)
9928 struct elf32_arm_link_hash_table
*htab
;
9930 htab
= elf32_arm_hash_table (info
);
9931 dynobj
= elf_hash_table (info
)->dynobj
;
9932 BFD_ASSERT (dynobj
!= NULL
);
9933 check_use_blx (htab
);
9935 if (elf_hash_table (info
)->dynamic_sections_created
)
9937 /* Set the contents of the .interp section to the interpreter. */
9938 if (info
->executable
)
9940 s
= bfd_get_section_by_name (dynobj
, ".interp");
9941 BFD_ASSERT (s
!= NULL
);
9942 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
9943 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
9947 /* Set up .got offsets for local syms, and space for local dynamic
9949 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9951 bfd_signed_vma
*local_got
;
9952 bfd_signed_vma
*end_local_got
;
9953 char *local_tls_type
;
9954 bfd_size_type locsymcount
;
9955 Elf_Internal_Shdr
*symtab_hdr
;
9957 bfd_boolean is_vxworks
= elf32_arm_hash_table (info
)->vxworks_p
;
9959 if (! is_arm_elf (ibfd
))
9962 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
9964 struct elf32_arm_relocs_copied
*p
;
9966 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
9968 if (!bfd_is_abs_section (p
->section
)
9969 && bfd_is_abs_section (p
->section
->output_section
))
9971 /* Input section has been discarded, either because
9972 it is a copy of a linkonce section or due to
9973 linker script /DISCARD/, so we'll be discarding
9977 && strcmp (p
->section
->output_section
->name
,
9980 /* Relocations in vxworks .tls_vars sections are
9981 handled specially by the loader. */
9983 else if (p
->count
!= 0)
9985 srel
= elf_section_data (p
->section
)->sreloc
;
9986 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
9987 if ((p
->section
->output_section
->flags
& SEC_READONLY
) != 0)
9988 info
->flags
|= DF_TEXTREL
;
9993 local_got
= elf_local_got_refcounts (ibfd
);
9997 symtab_hdr
= & elf_symtab_hdr (ibfd
);
9998 locsymcount
= symtab_hdr
->sh_info
;
9999 end_local_got
= local_got
+ locsymcount
;
10000 local_tls_type
= elf32_arm_local_got_tls_type (ibfd
);
10002 srel
= htab
->srelgot
;
10003 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
10005 if (*local_got
> 0)
10007 *local_got
= s
->size
;
10008 if (*local_tls_type
& GOT_TLS_GD
)
10009 /* TLS_GD relocs need an 8-byte structure in the GOT. */
10011 if (*local_tls_type
& GOT_TLS_IE
)
10013 if (*local_tls_type
== GOT_NORMAL
)
10016 if (info
->shared
|| *local_tls_type
== GOT_TLS_GD
)
10017 srel
->size
+= RELOC_SIZE (htab
);
10020 *local_got
= (bfd_vma
) -1;
10024 if (htab
->tls_ldm_got
.refcount
> 0)
10026 /* Allocate two GOT entries and one dynamic relocation (if necessary)
10027 for R_ARM_TLS_LDM32 relocations. */
10028 htab
->tls_ldm_got
.offset
= htab
->sgot
->size
;
10029 htab
->sgot
->size
+= 8;
10031 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
10034 htab
->tls_ldm_got
.offset
= -1;
10036 /* Allocate global sym .plt and .got entries, and space for global
10037 sym dynamic relocs. */
10038 elf_link_hash_traverse (& htab
->root
, allocate_dynrelocs
, info
);
10040 /* Here we rummage through the found bfds to collect glue information. */
10041 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10043 if (! is_arm_elf (ibfd
))
10046 /* Initialise mapping tables for code/data. */
10047 bfd_elf32_arm_init_maps (ibfd
);
10049 if (!bfd_elf32_arm_process_before_allocation (ibfd
, info
)
10050 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd
, info
))
10051 /* xgettext:c-format */
10052 _bfd_error_handler (_("Errors encountered processing file %s"),
10056 /* The check_relocs and adjust_dynamic_symbol entry points have
10057 determined the sizes of the various dynamic sections. Allocate
10058 memory for them. */
10061 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10065 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10068 /* It's OK to base decisions on the section name, because none
10069 of the dynobj section names depend upon the input files. */
10070 name
= bfd_get_section_name (dynobj
, s
);
10072 if (strcmp (name
, ".plt") == 0)
10074 /* Remember whether there is a PLT. */
10075 plt
= s
->size
!= 0;
10077 else if (CONST_STRNEQ (name
, ".rel"))
10081 /* Remember whether there are any reloc sections other
10082 than .rel(a).plt and .rela.plt.unloaded. */
10083 if (s
!= htab
->srelplt
&& s
!= htab
->srelplt2
)
10086 /* We use the reloc_count field as a counter if we need
10087 to copy relocs into the output file. */
10088 s
->reloc_count
= 0;
10091 else if (! CONST_STRNEQ (name
, ".got")
10092 && strcmp (name
, ".dynbss") != 0)
10094 /* It's not one of our sections, so don't allocate space. */
10100 /* If we don't need this section, strip it from the
10101 output file. This is mostly to handle .rel(a).bss and
10102 .rel(a).plt. We must create both sections in
10103 create_dynamic_sections, because they must be created
10104 before the linker maps input sections to output
10105 sections. The linker does that before
10106 adjust_dynamic_symbol is called, and it is that
10107 function which decides whether anything needs to go
10108 into these sections. */
10109 s
->flags
|= SEC_EXCLUDE
;
10113 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10116 /* Allocate memory for the section contents. */
10117 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10118 if (s
->contents
== NULL
)
10122 if (elf_hash_table (info
)->dynamic_sections_created
)
10124 /* Add some entries to the .dynamic section. We fill in the
10125 values later, in elf32_arm_finish_dynamic_sections, but we
10126 must add the entries now so that we get the correct size for
10127 the .dynamic section. The DT_DEBUG entry is filled in by the
10128 dynamic linker and used by the debugger. */
10129 #define add_dynamic_entry(TAG, VAL) \
10130 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10132 if (info
->executable
)
10134 if (!add_dynamic_entry (DT_DEBUG
, 0))
10140 if ( !add_dynamic_entry (DT_PLTGOT
, 0)
10141 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10142 || !add_dynamic_entry (DT_PLTREL
,
10143 htab
->use_rel
? DT_REL
: DT_RELA
)
10144 || !add_dynamic_entry (DT_JMPREL
, 0))
10152 if (!add_dynamic_entry (DT_REL
, 0)
10153 || !add_dynamic_entry (DT_RELSZ
, 0)
10154 || !add_dynamic_entry (DT_RELENT
, RELOC_SIZE (htab
)))
10159 if (!add_dynamic_entry (DT_RELA
, 0)
10160 || !add_dynamic_entry (DT_RELASZ
, 0)
10161 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
10166 /* If any dynamic relocs apply to a read-only section,
10167 then we need a DT_TEXTREL entry. */
10168 if ((info
->flags
& DF_TEXTREL
) == 0)
10169 elf_link_hash_traverse (&htab
->root
, elf32_arm_readonly_dynrelocs
,
10172 if ((info
->flags
& DF_TEXTREL
) != 0)
10174 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10177 if (htab
->vxworks_p
10178 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
10181 #undef add_dynamic_entry
10186 /* Finish up dynamic symbol handling. We set the contents of various
10187 dynamic sections here. */
10190 elf32_arm_finish_dynamic_symbol (bfd
* output_bfd
,
10191 struct bfd_link_info
* info
,
10192 struct elf_link_hash_entry
* h
,
10193 Elf_Internal_Sym
* sym
)
10196 struct elf32_arm_link_hash_table
*htab
;
10197 struct elf32_arm_link_hash_entry
*eh
;
10199 dynobj
= elf_hash_table (info
)->dynobj
;
10200 htab
= elf32_arm_hash_table (info
);
10201 eh
= (struct elf32_arm_link_hash_entry
*) h
;
10203 if (h
->plt
.offset
!= (bfd_vma
) -1)
10209 Elf_Internal_Rela rel
;
10211 /* This symbol has an entry in the procedure linkage table. Set
10214 BFD_ASSERT (h
->dynindx
!= -1);
10216 splt
= bfd_get_section_by_name (dynobj
, ".plt");
10217 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".plt"));
10218 BFD_ASSERT (splt
!= NULL
&& srel
!= NULL
);
10220 /* Fill in the entry in the procedure linkage table. */
10221 if (htab
->symbian_p
)
10223 put_arm_insn (htab
, output_bfd
,
10224 elf32_arm_symbian_plt_entry
[0],
10225 splt
->contents
+ h
->plt
.offset
);
10226 bfd_put_32 (output_bfd
,
10227 elf32_arm_symbian_plt_entry
[1],
10228 splt
->contents
+ h
->plt
.offset
+ 4);
10230 /* Fill in the entry in the .rel.plt section. */
10231 rel
.r_offset
= (splt
->output_section
->vma
10232 + splt
->output_offset
10233 + h
->plt
.offset
+ 4);
10234 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
10236 /* Get the index in the procedure linkage table which
10237 corresponds to this symbol. This is the index of this symbol
10238 in all the symbols for which we are making plt entries. The
10239 first entry in the procedure linkage table is reserved. */
10240 plt_index
= ((h
->plt
.offset
- htab
->plt_header_size
)
10241 / htab
->plt_entry_size
);
10245 bfd_vma got_offset
, got_address
, plt_address
;
10246 bfd_vma got_displacement
;
10250 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
10251 BFD_ASSERT (sgot
!= NULL
);
10253 /* Get the offset into the .got.plt table of the entry that
10254 corresponds to this function. */
10255 got_offset
= eh
->plt_got_offset
;
10257 /* Get the index in the procedure linkage table which
10258 corresponds to this symbol. This is the index of this symbol
10259 in all the symbols for which we are making plt entries. The
10260 first three entries in .got.plt are reserved; after that
10261 symbols appear in the same order as in .plt. */
10262 plt_index
= (got_offset
- 12) / 4;
10264 /* Calculate the address of the GOT entry. */
10265 got_address
= (sgot
->output_section
->vma
10266 + sgot
->output_offset
10269 /* ...and the address of the PLT entry. */
10270 plt_address
= (splt
->output_section
->vma
10271 + splt
->output_offset
10274 ptr
= htab
->splt
->contents
+ h
->plt
.offset
;
10275 if (htab
->vxworks_p
&& info
->shared
)
10280 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
10282 val
= elf32_arm_vxworks_shared_plt_entry
[i
];
10284 val
|= got_address
- sgot
->output_section
->vma
;
10286 val
|= plt_index
* RELOC_SIZE (htab
);
10287 if (i
== 2 || i
== 5)
10288 bfd_put_32 (output_bfd
, val
, ptr
);
10290 put_arm_insn (htab
, output_bfd
, val
, ptr
);
10293 else if (htab
->vxworks_p
)
10298 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
10300 val
= elf32_arm_vxworks_exec_plt_entry
[i
];
10302 val
|= got_address
;
10304 val
|= 0xffffff & -((h
->plt
.offset
+ i
* 4 + 8) >> 2);
10306 val
|= plt_index
* RELOC_SIZE (htab
);
10307 if (i
== 2 || i
== 5)
10308 bfd_put_32 (output_bfd
, val
, ptr
);
10310 put_arm_insn (htab
, output_bfd
, val
, ptr
);
10313 loc
= (htab
->srelplt2
->contents
10314 + (plt_index
* 2 + 1) * RELOC_SIZE (htab
));
10316 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
10317 referencing the GOT for this PLT entry. */
10318 rel
.r_offset
= plt_address
+ 8;
10319 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
10320 rel
.r_addend
= got_offset
;
10321 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
10322 loc
+= RELOC_SIZE (htab
);
10324 /* Create the R_ARM_ABS32 relocation referencing the
10325 beginning of the PLT for this GOT entry. */
10326 rel
.r_offset
= got_address
;
10327 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
10329 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
10333 bfd_signed_vma thumb_refs
;
10334 /* Calculate the displacement between the PLT slot and the
10335 entry in the GOT. The eight-byte offset accounts for the
10336 value produced by adding to pc in the first instruction
10337 of the PLT stub. */
10338 got_displacement
= got_address
- (plt_address
+ 8);
10340 BFD_ASSERT ((got_displacement
& 0xf0000000) == 0);
10342 thumb_refs
= eh
->plt_thumb_refcount
;
10343 if (!htab
->use_blx
)
10344 thumb_refs
+= eh
->plt_maybe_thumb_refcount
;
10346 if (thumb_refs
> 0)
10348 put_thumb_insn (htab
, output_bfd
,
10349 elf32_arm_plt_thumb_stub
[0], ptr
- 4);
10350 put_thumb_insn (htab
, output_bfd
,
10351 elf32_arm_plt_thumb_stub
[1], ptr
- 2);
10354 put_arm_insn (htab
, output_bfd
,
10355 elf32_arm_plt_entry
[0]
10356 | ((got_displacement
& 0x0ff00000) >> 20),
10358 put_arm_insn (htab
, output_bfd
,
10359 elf32_arm_plt_entry
[1]
10360 | ((got_displacement
& 0x000ff000) >> 12),
10362 put_arm_insn (htab
, output_bfd
,
10363 elf32_arm_plt_entry
[2]
10364 | (got_displacement
& 0x00000fff),
10366 #ifdef FOUR_WORD_PLT
10367 bfd_put_32 (output_bfd
, elf32_arm_plt_entry
[3], ptr
+ 12);
10371 /* Fill in the entry in the global offset table. */
10372 bfd_put_32 (output_bfd
,
10373 (splt
->output_section
->vma
10374 + splt
->output_offset
),
10375 sgot
->contents
+ got_offset
);
10377 /* Fill in the entry in the .rel(a).plt section. */
10379 rel
.r_offset
= got_address
;
10380 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_JUMP_SLOT
);
10383 loc
= srel
->contents
+ plt_index
* RELOC_SIZE (htab
);
10384 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
10386 if (!h
->def_regular
)
10388 /* Mark the symbol as undefined, rather than as defined in
10389 the .plt section. Leave the value alone. */
10390 sym
->st_shndx
= SHN_UNDEF
;
10391 /* If the symbol is weak, we do need to clear the value.
10392 Otherwise, the PLT entry would provide a definition for
10393 the symbol even if the symbol wasn't defined anywhere,
10394 and so the symbol would never be NULL. */
10395 if (!h
->ref_regular_nonweak
)
10400 if (h
->got
.offset
!= (bfd_vma
) -1
10401 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_GD
) == 0
10402 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_IE
) == 0)
10406 Elf_Internal_Rela rel
;
10410 /* This symbol has an entry in the global offset table. Set it
10412 sgot
= bfd_get_section_by_name (dynobj
, ".got");
10413 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".got"));
10414 BFD_ASSERT (sgot
!= NULL
&& srel
!= NULL
);
10416 offset
= (h
->got
.offset
& ~(bfd_vma
) 1);
10418 rel
.r_offset
= (sgot
->output_section
->vma
10419 + sgot
->output_offset
10422 /* If this is a static link, or it is a -Bsymbolic link and the
10423 symbol is defined locally or was forced to be local because
10424 of a version file, we just want to emit a RELATIVE reloc.
10425 The entry in the global offset table will already have been
10426 initialized in the relocate_section function. */
10428 && SYMBOL_REFERENCES_LOCAL (info
, h
))
10430 BFD_ASSERT ((h
->got
.offset
& 1) != 0);
10431 rel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
10432 if (!htab
->use_rel
)
10434 rel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
10435 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
10440 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
10441 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
10442 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
10445 loc
= srel
->contents
+ srel
->reloc_count
++ * RELOC_SIZE (htab
);
10446 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
10452 Elf_Internal_Rela rel
;
10455 /* This symbol needs a copy reloc. Set it up. */
10456 BFD_ASSERT (h
->dynindx
!= -1
10457 && (h
->root
.type
== bfd_link_hash_defined
10458 || h
->root
.type
== bfd_link_hash_defweak
));
10460 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
10461 RELOC_SECTION (htab
, ".bss"));
10462 BFD_ASSERT (s
!= NULL
);
10465 rel
.r_offset
= (h
->root
.u
.def
.value
10466 + h
->root
.u
.def
.section
->output_section
->vma
10467 + h
->root
.u
.def
.section
->output_offset
);
10468 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_COPY
);
10469 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
10470 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
10473 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
10474 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
10475 to the ".got" section. */
10476 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
10477 || (!htab
->vxworks_p
&& h
== htab
->root
.hgot
))
10478 sym
->st_shndx
= SHN_ABS
;
10483 /* Finish up the dynamic sections. */
10486 elf32_arm_finish_dynamic_sections (bfd
* output_bfd
, struct bfd_link_info
* info
)
10492 dynobj
= elf_hash_table (info
)->dynobj
;
10494 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
10495 BFD_ASSERT (elf32_arm_hash_table (info
)->symbian_p
|| sgot
!= NULL
);
10496 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
10498 if (elf_hash_table (info
)->dynamic_sections_created
)
10501 Elf32_External_Dyn
*dyncon
, *dynconend
;
10502 struct elf32_arm_link_hash_table
*htab
;
10504 htab
= elf32_arm_hash_table (info
);
10505 splt
= bfd_get_section_by_name (dynobj
, ".plt");
10506 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
10508 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
10509 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
10511 for (; dyncon
< dynconend
; dyncon
++)
10513 Elf_Internal_Dyn dyn
;
10517 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
10524 if (htab
->vxworks_p
10525 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
10526 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10531 goto get_vma_if_bpabi
;
10534 goto get_vma_if_bpabi
;
10537 goto get_vma_if_bpabi
;
10539 name
= ".gnu.version";
10540 goto get_vma_if_bpabi
;
10542 name
= ".gnu.version_d";
10543 goto get_vma_if_bpabi
;
10545 name
= ".gnu.version_r";
10546 goto get_vma_if_bpabi
;
10552 name
= RELOC_SECTION (htab
, ".plt");
10554 s
= bfd_get_section_by_name (output_bfd
, name
);
10555 BFD_ASSERT (s
!= NULL
);
10556 if (!htab
->symbian_p
)
10557 dyn
.d_un
.d_ptr
= s
->vma
;
10559 /* In the BPABI, tags in the PT_DYNAMIC section point
10560 at the file offset, not the memory address, for the
10561 convenience of the post linker. */
10562 dyn
.d_un
.d_ptr
= s
->filepos
;
10563 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10567 if (htab
->symbian_p
)
10572 s
= bfd_get_section_by_name (output_bfd
,
10573 RELOC_SECTION (htab
, ".plt"));
10574 BFD_ASSERT (s
!= NULL
);
10575 dyn
.d_un
.d_val
= s
->size
;
10576 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10581 if (!htab
->symbian_p
)
10583 /* My reading of the SVR4 ABI indicates that the
10584 procedure linkage table relocs (DT_JMPREL) should be
10585 included in the overall relocs (DT_REL). This is
10586 what Solaris does. However, UnixWare can not handle
10587 that case. Therefore, we override the DT_RELSZ entry
10588 here to make it not include the JMPREL relocs. Since
10589 the linker script arranges for .rel(a).plt to follow all
10590 other relocation sections, we don't have to worry
10591 about changing the DT_REL entry. */
10592 s
= bfd_get_section_by_name (output_bfd
,
10593 RELOC_SECTION (htab
, ".plt"));
10595 dyn
.d_un
.d_val
-= s
->size
;
10596 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10603 /* In the BPABI, the DT_REL tag must point at the file
10604 offset, not the VMA, of the first relocation
10605 section. So, we use code similar to that in
10606 elflink.c, but do not check for SHF_ALLOC on the
10607 relcoation section, since relocations sections are
10608 never allocated under the BPABI. The comments above
10609 about Unixware notwithstanding, we include all of the
10610 relocations here. */
10611 if (htab
->symbian_p
)
10614 type
= ((dyn
.d_tag
== DT_REL
|| dyn
.d_tag
== DT_RELSZ
)
10615 ? SHT_REL
: SHT_RELA
);
10616 dyn
.d_un
.d_val
= 0;
10617 for (i
= 1; i
< elf_numsections (output_bfd
); i
++)
10619 Elf_Internal_Shdr
*hdr
10620 = elf_elfsections (output_bfd
)[i
];
10621 if (hdr
->sh_type
== type
)
10623 if (dyn
.d_tag
== DT_RELSZ
10624 || dyn
.d_tag
== DT_RELASZ
)
10625 dyn
.d_un
.d_val
+= hdr
->sh_size
;
10626 else if ((ufile_ptr
) hdr
->sh_offset
10627 <= dyn
.d_un
.d_val
- 1)
10628 dyn
.d_un
.d_val
= hdr
->sh_offset
;
10631 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10635 /* Set the bottom bit of DT_INIT/FINI if the
10636 corresponding function is Thumb. */
10638 name
= info
->init_function
;
10641 name
= info
->fini_function
;
10643 /* If it wasn't set by elf_bfd_final_link
10644 then there is nothing to adjust. */
10645 if (dyn
.d_un
.d_val
!= 0)
10647 struct elf_link_hash_entry
* eh
;
10649 eh
= elf_link_hash_lookup (elf_hash_table (info
), name
,
10650 FALSE
, FALSE
, TRUE
);
10652 && ELF_ST_TYPE (eh
->type
) == STT_ARM_TFUNC
)
10654 dyn
.d_un
.d_val
|= 1;
10655 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
10662 /* Fill in the first entry in the procedure linkage table. */
10663 if (splt
->size
> 0 && elf32_arm_hash_table (info
)->plt_header_size
)
10665 const bfd_vma
*plt0_entry
;
10666 bfd_vma got_address
, plt_address
, got_displacement
;
10668 /* Calculate the addresses of the GOT and PLT. */
10669 got_address
= sgot
->output_section
->vma
+ sgot
->output_offset
;
10670 plt_address
= splt
->output_section
->vma
+ splt
->output_offset
;
10672 if (htab
->vxworks_p
)
10674 /* The VxWorks GOT is relocated by the dynamic linker.
10675 Therefore, we must emit relocations rather than simply
10676 computing the values now. */
10677 Elf_Internal_Rela rel
;
10679 plt0_entry
= elf32_arm_vxworks_exec_plt0_entry
;
10680 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
10681 splt
->contents
+ 0);
10682 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
10683 splt
->contents
+ 4);
10684 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
10685 splt
->contents
+ 8);
10686 bfd_put_32 (output_bfd
, got_address
, splt
->contents
+ 12);
10688 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
10689 rel
.r_offset
= plt_address
+ 12;
10690 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
10692 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
,
10693 htab
->srelplt2
->contents
);
10697 got_displacement
= got_address
- (plt_address
+ 16);
10699 plt0_entry
= elf32_arm_plt0_entry
;
10700 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
10701 splt
->contents
+ 0);
10702 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
10703 splt
->contents
+ 4);
10704 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
10705 splt
->contents
+ 8);
10706 put_arm_insn (htab
, output_bfd
, plt0_entry
[3],
10707 splt
->contents
+ 12);
10709 #ifdef FOUR_WORD_PLT
10710 /* The displacement value goes in the otherwise-unused
10711 last word of the second entry. */
10712 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 28);
10714 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 16);
10719 /* UnixWare sets the entsize of .plt to 4, although that doesn't
10720 really seem like the right value. */
10721 if (splt
->output_section
->owner
== output_bfd
)
10722 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
10724 if (htab
->vxworks_p
&& !info
->shared
&& htab
->splt
->size
> 0)
10726 /* Correct the .rel(a).plt.unloaded relocations. They will have
10727 incorrect symbol indexes. */
10731 num_plts
= ((htab
->splt
->size
- htab
->plt_header_size
)
10732 / htab
->plt_entry_size
);
10733 p
= htab
->srelplt2
->contents
+ RELOC_SIZE (htab
);
10735 for (; num_plts
; num_plts
--)
10737 Elf_Internal_Rela rel
;
10739 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
10740 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
10741 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
10742 p
+= RELOC_SIZE (htab
);
10744 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
10745 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
10746 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
10747 p
+= RELOC_SIZE (htab
);
10752 /* Fill in the first three entries in the global offset table. */
10755 if (sgot
->size
> 0)
10758 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
10760 bfd_put_32 (output_bfd
,
10761 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
10763 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
10764 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
10767 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
10774 elf32_arm_post_process_headers (bfd
* abfd
, struct bfd_link_info
* link_info ATTRIBUTE_UNUSED
)
10776 Elf_Internal_Ehdr
* i_ehdrp
; /* ELF file header, internal form. */
10777 struct elf32_arm_link_hash_table
*globals
;
10779 i_ehdrp
= elf_elfheader (abfd
);
10781 if (EF_ARM_EABI_VERSION (i_ehdrp
->e_flags
) == EF_ARM_EABI_UNKNOWN
)
10782 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_ARM
;
10784 i_ehdrp
->e_ident
[EI_OSABI
] = 0;
10785 i_ehdrp
->e_ident
[EI_ABIVERSION
] = ARM_ELF_ABI_VERSION
;
10789 globals
= elf32_arm_hash_table (link_info
);
10790 if (globals
->byteswap_code
)
10791 i_ehdrp
->e_flags
|= EF_ARM_BE8
;
10795 static enum elf_reloc_type_class
10796 elf32_arm_reloc_type_class (const Elf_Internal_Rela
*rela
)
10798 switch ((int) ELF32_R_TYPE (rela
->r_info
))
10800 case R_ARM_RELATIVE
:
10801 return reloc_class_relative
;
10802 case R_ARM_JUMP_SLOT
:
10803 return reloc_class_plt
;
10805 return reloc_class_copy
;
10807 return reloc_class_normal
;
10811 /* Set the right machine number for an Arm ELF file. */
10814 elf32_arm_section_flags (flagword
*flags
, const Elf_Internal_Shdr
*hdr
)
10816 if (hdr
->sh_type
== SHT_NOTE
)
10817 *flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_SAME_CONTENTS
;
10823 elf32_arm_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
10825 bfd_arm_update_notes (abfd
, ARM_NOTE_SECTION
);
10828 /* Return TRUE if this is an unwinding table entry. */
10831 is_arm_elf_unwind_section_name (bfd
* abfd ATTRIBUTE_UNUSED
, const char * name
)
10833 return (CONST_STRNEQ (name
, ELF_STRING_ARM_unwind
)
10834 || CONST_STRNEQ (name
, ELF_STRING_ARM_unwind_once
));
10838 /* Set the type and flags for an ARM section. We do this by
10839 the section name, which is a hack, but ought to work. */
10842 elf32_arm_fake_sections (bfd
* abfd
, Elf_Internal_Shdr
* hdr
, asection
* sec
)
10846 name
= bfd_get_section_name (abfd
, sec
);
10848 if (is_arm_elf_unwind_section_name (abfd
, name
))
10850 hdr
->sh_type
= SHT_ARM_EXIDX
;
10851 hdr
->sh_flags
|= SHF_LINK_ORDER
;
10856 /* Handle an ARM specific section when reading an object file. This is
10857 called when bfd_section_from_shdr finds a section with an unknown
10861 elf32_arm_section_from_shdr (bfd
*abfd
,
10862 Elf_Internal_Shdr
* hdr
,
10866 /* There ought to be a place to keep ELF backend specific flags, but
10867 at the moment there isn't one. We just keep track of the
10868 sections by their name, instead. Fortunately, the ABI gives
10869 names for all the ARM specific sections, so we will probably get
10871 switch (hdr
->sh_type
)
10873 case SHT_ARM_EXIDX
:
10874 case SHT_ARM_PREEMPTMAP
:
10875 case SHT_ARM_ATTRIBUTES
:
10882 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
10888 /* A structure used to record a list of sections, independently
10889 of the next and prev fields in the asection structure. */
10890 typedef struct section_list
10893 struct section_list
* next
;
10894 struct section_list
* prev
;
10898 /* Unfortunately we need to keep a list of sections for which
10899 an _arm_elf_section_data structure has been allocated. This
10900 is because it is possible for functions like elf32_arm_write_section
10901 to be called on a section which has had an elf_data_structure
10902 allocated for it (and so the used_by_bfd field is valid) but
10903 for which the ARM extended version of this structure - the
10904 _arm_elf_section_data structure - has not been allocated. */
10905 static section_list
* sections_with_arm_elf_section_data
= NULL
;
10908 record_section_with_arm_elf_section_data (asection
* sec
)
10910 struct section_list
* entry
;
10912 entry
= bfd_malloc (sizeof (* entry
));
10916 entry
->next
= sections_with_arm_elf_section_data
;
10917 entry
->prev
= NULL
;
10918 if (entry
->next
!= NULL
)
10919 entry
->next
->prev
= entry
;
10920 sections_with_arm_elf_section_data
= entry
;
10923 static struct section_list
*
10924 find_arm_elf_section_entry (asection
* sec
)
10926 struct section_list
* entry
;
10927 static struct section_list
* last_entry
= NULL
;
10929 /* This is a short cut for the typical case where the sections are added
10930 to the sections_with_arm_elf_section_data list in forward order and
10931 then looked up here in backwards order. This makes a real difference
10932 to the ld-srec/sec64k.exp linker test. */
10933 entry
= sections_with_arm_elf_section_data
;
10934 if (last_entry
!= NULL
)
10936 if (last_entry
->sec
== sec
)
10937 entry
= last_entry
;
10938 else if (last_entry
->next
!= NULL
10939 && last_entry
->next
->sec
== sec
)
10940 entry
= last_entry
->next
;
10943 for (; entry
; entry
= entry
->next
)
10944 if (entry
->sec
== sec
)
10948 /* Record the entry prior to this one - it is the entry we are most
10949 likely to want to locate next time. Also this way if we have been
10950 called from unrecord_section_with_arm_elf_section_data() we will not
10951 be caching a pointer that is about to be freed. */
10952 last_entry
= entry
->prev
;
10957 static _arm_elf_section_data
*
10958 get_arm_elf_section_data (asection
* sec
)
10960 struct section_list
* entry
;
10962 entry
= find_arm_elf_section_entry (sec
);
10965 return elf32_arm_section_data (entry
->sec
);
10971 unrecord_section_with_arm_elf_section_data (asection
* sec
)
10973 struct section_list
* entry
;
10975 entry
= find_arm_elf_section_entry (sec
);
10979 if (entry
->prev
!= NULL
)
10980 entry
->prev
->next
= entry
->next
;
10981 if (entry
->next
!= NULL
)
10982 entry
->next
->prev
= entry
->prev
;
10983 if (entry
== sections_with_arm_elf_section_data
)
10984 sections_with_arm_elf_section_data
= entry
->next
;
10993 struct bfd_link_info
*info
;
10996 bfd_boolean (*func
) (void *, const char *, Elf_Internal_Sym
*,
10997 asection
*, struct elf_link_hash_entry
*);
10998 } output_arch_syminfo
;
11000 enum map_symbol_type
11008 /* Output a single PLT mapping symbol. */
11011 elf32_arm_ouput_plt_map_sym (output_arch_syminfo
*osi
,
11012 enum map_symbol_type type
,
11015 static const char *names
[3] = {"$a", "$t", "$d"};
11016 struct elf32_arm_link_hash_table
*htab
;
11017 Elf_Internal_Sym sym
;
11019 htab
= elf32_arm_hash_table (osi
->info
);
11020 sym
.st_value
= osi
->sec
->output_section
->vma
11021 + osi
->sec
->output_offset
11025 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
11026 sym
.st_shndx
= osi
->sec_shndx
;
11027 if (!osi
->func (osi
->finfo
, names
[type
], &sym
, osi
->sec
, NULL
))
11033 /* Output mapping symbols for PLT entries associated with H. */
11036 elf32_arm_output_plt_map (struct elf_link_hash_entry
*h
, void *inf
)
11038 output_arch_syminfo
*osi
= (output_arch_syminfo
*) inf
;
11039 struct elf32_arm_link_hash_table
*htab
;
11040 struct elf32_arm_link_hash_entry
*eh
;
11043 htab
= elf32_arm_hash_table (osi
->info
);
11045 if (h
->root
.type
== bfd_link_hash_indirect
)
11048 if (h
->root
.type
== bfd_link_hash_warning
)
11049 /* When warning symbols are created, they **replace** the "real"
11050 entry in the hash table, thus we never get to see the real
11051 symbol in a hash traversal. So look at it now. */
11052 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
11054 if (h
->plt
.offset
== (bfd_vma
) -1)
11057 eh
= (struct elf32_arm_link_hash_entry
*) h
;
11058 addr
= h
->plt
.offset
;
11059 if (htab
->symbian_p
)
11061 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
11063 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 4))
11066 else if (htab
->vxworks_p
)
11068 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
11070 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 8))
11072 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
+ 12))
11074 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 20))
11079 bfd_signed_vma thumb_refs
;
11081 thumb_refs
= eh
->plt_thumb_refcount
;
11082 if (!htab
->use_blx
)
11083 thumb_refs
+= eh
->plt_maybe_thumb_refcount
;
11085 if (thumb_refs
> 0)
11087 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_THUMB
, addr
- 4))
11090 #ifdef FOUR_WORD_PLT
11091 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
11093 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 12))
11096 /* A three-word PLT with no Thumb thunk contains only Arm code,
11097 so only need to output a mapping symbol for the first PLT entry and
11098 entries with thumb thunks. */
11099 if (thumb_refs
> 0 || addr
== 20)
11101 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
11112 arm_map_one_stub (struct bfd_hash_entry
*gen_entry
,
11115 struct elf32_arm_stub_hash_entry
*stub_entry
;
11116 struct bfd_link_info
*info
;
11117 struct elf32_arm_link_hash_table
*htab
;
11118 asection
*stub_sec
;
11121 /* Massage our args to the form they really have. */
11122 stub_entry
= (struct elf32_arm_stub_hash_entry
*) gen_entry
;
11124 output_arch_syminfo
*osi
= (output_arch_syminfo
*) in_arg
;
11127 htab
= elf32_arm_hash_table (info
);
11128 stub_sec
= stub_entry
->stub_sec
;
11130 /* Ensure this stub is attached to the current section being
11132 if (stub_sec
!= osi
->sec
)
11135 addr
= (bfd_vma
)stub_entry
->stub_offset
;
11137 switch(stub_entry
->stub_type
) {
11138 case arm_stub_long_branch
:
11139 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
11141 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 4))
11144 case arm_thumb_v4t_stub_long_branch
:
11145 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
11147 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 8))
11150 case arm_thumb_thumb_stub_long_branch
:
11151 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_THUMB
, addr
))
11153 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 12))
11156 case arm_thumb_arm_v4t_stub_long_branch
:
11157 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_THUMB
, addr
))
11159 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
+ 8))
11161 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 16))
11164 case arm_stub_pic_long_branch
:
11165 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_ARM
, addr
))
11167 if (!elf32_arm_ouput_plt_map_sym (osi
, ARM_MAP_DATA
, addr
+ 8))
11177 /* Output mapping symbols for linker generated sections. */
11180 elf32_arm_output_arch_local_syms (bfd
*output_bfd
,
11181 struct bfd_link_info
*info
,
11183 bfd_boolean (*func
) (void *, const char *,
11184 Elf_Internal_Sym
*,
11186 struct elf_link_hash_entry
*))
11188 output_arch_syminfo osi
;
11189 struct elf32_arm_link_hash_table
*htab
;
11191 bfd_size_type size
;
11193 htab
= elf32_arm_hash_table (info
);
11194 check_use_blx (htab
);
11200 /* ARM->Thumb glue. */
11201 if (htab
->arm_glue_size
> 0)
11203 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
11204 ARM2THUMB_GLUE_SECTION_NAME
);
11206 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
11207 (output_bfd
, osi
.sec
->output_section
);
11208 if (info
->shared
|| htab
->root
.is_relocatable_executable
11209 || htab
->pic_veneer
)
11210 size
= ARM2THUMB_PIC_GLUE_SIZE
;
11211 else if (htab
->use_blx
)
11212 size
= ARM2THUMB_V5_STATIC_GLUE_SIZE
;
11214 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
11216 for (offset
= 0; offset
< htab
->arm_glue_size
; offset
+= size
)
11218 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, offset
);
11219 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, offset
+ size
- 4);
11223 /* Thumb->ARM glue. */
11224 if (htab
->thumb_glue_size
> 0)
11226 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
11227 THUMB2ARM_GLUE_SECTION_NAME
);
11229 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
11230 (output_bfd
, osi
.sec
->output_section
);
11231 size
= THUMB2ARM_GLUE_SIZE
;
11233 for (offset
= 0; offset
< htab
->thumb_glue_size
; offset
+= size
)
11235 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_THUMB
, offset
);
11236 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, offset
+ 4);
11240 /* ARMv4 BX veneers. */
11241 if (htab
->bx_glue_size
> 0)
11243 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
11244 ARM_BX_GLUE_SECTION_NAME
);
11246 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
11247 (output_bfd
, osi
.sec
->output_section
);
11249 elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0);
11252 /* Long calls stubs. */
11253 if (htab
->stub_bfd
&& htab
->stub_bfd
->sections
) {
11254 asection
* stub_sec
;
11255 for (stub_sec
= htab
->stub_bfd
->sections
;
11257 stub_sec
= stub_sec
->next
) {
11259 /* Ignore non-stub sections */
11260 if (!strstr(stub_sec
->name
, STUB_SUFFIX
))
11263 osi
.sec
= stub_sec
;
11265 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
11266 (output_bfd
, osi
.sec
->output_section
);
11268 bfd_hash_traverse (&htab
->stub_hash_table
, arm_map_one_stub
, &osi
);
11272 /* Finally, output mapping symbols for the PLT. */
11273 if (!htab
->splt
|| htab
->splt
->size
== 0)
11276 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section (output_bfd
,
11277 htab
->splt
->output_section
);
11278 osi
.sec
= htab
->splt
;
11279 /* Output mapping symbols for the plt header. SymbianOS does not have a
11281 if (htab
->vxworks_p
)
11283 /* VxWorks shared libraries have no PLT header. */
11286 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
11288 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 12))
11292 else if (!htab
->symbian_p
)
11294 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_ARM
, 0))
11296 #ifndef FOUR_WORD_PLT
11297 if (!elf32_arm_ouput_plt_map_sym (&osi
, ARM_MAP_DATA
, 16))
11302 elf_link_hash_traverse (&htab
->root
, elf32_arm_output_plt_map
, (void *) &osi
);
11306 /* Allocate target specific section data. */
11309 elf32_arm_new_section_hook (bfd
*abfd
, asection
*sec
)
11311 if (!sec
->used_by_bfd
)
11313 _arm_elf_section_data
*sdata
;
11314 bfd_size_type amt
= sizeof (*sdata
);
11316 sdata
= bfd_zalloc (abfd
, amt
);
11319 sec
->used_by_bfd
= sdata
;
11322 record_section_with_arm_elf_section_data (sec
);
11324 return _bfd_elf_new_section_hook (abfd
, sec
);
11328 /* Used to order a list of mapping symbols by address. */
11331 elf32_arm_compare_mapping (const void * a
, const void * b
)
11333 const elf32_arm_section_map
*amap
= (const elf32_arm_section_map
*) a
;
11334 const elf32_arm_section_map
*bmap
= (const elf32_arm_section_map
*) b
;
11336 if (amap
->vma
> bmap
->vma
)
11338 else if (amap
->vma
< bmap
->vma
)
11340 else if (amap
->type
> bmap
->type
)
11341 /* Ensure results do not depend on the host qsort for objects with
11342 multiple mapping symbols at the same address by sorting on type
11345 else if (amap
->type
< bmap
->type
)
11352 /* Do code byteswapping. Return FALSE afterwards so that the section is
11353 written out as normal. */
11356 elf32_arm_write_section (bfd
*output_bfd
,
11357 struct bfd_link_info
*link_info
, asection
*sec
,
11358 bfd_byte
*contents
)
11360 int mapcount
, errcount
;
11361 _arm_elf_section_data
*arm_data
;
11362 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
11363 elf32_arm_section_map
*map
;
11364 elf32_vfp11_erratum_list
*errnode
;
11367 bfd_vma offset
= sec
->output_section
->vma
+ sec
->output_offset
;
11371 /* If this section has not been allocated an _arm_elf_section_data
11372 structure then we cannot record anything. */
11373 arm_data
= get_arm_elf_section_data (sec
);
11374 if (arm_data
== NULL
)
11377 mapcount
= arm_data
->mapcount
;
11378 map
= arm_data
->map
;
11379 errcount
= arm_data
->erratumcount
;
11383 unsigned int endianflip
= bfd_big_endian (output_bfd
) ? 3 : 0;
11385 for (errnode
= arm_data
->erratumlist
; errnode
!= 0;
11386 errnode
= errnode
->next
)
11388 bfd_vma index
= errnode
->vma
- offset
;
11390 switch (errnode
->type
)
11392 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
11394 bfd_vma branch_to_veneer
;
11395 /* Original condition code of instruction, plus bit mask for
11396 ARM B instruction. */
11397 unsigned int insn
= (errnode
->u
.b
.vfp_insn
& 0xf0000000)
11400 /* The instruction is before the label. */
11403 /* Above offset included in -4 below. */
11404 branch_to_veneer
= errnode
->u
.b
.veneer
->vma
11405 - errnode
->vma
- 4;
11407 if ((signed) branch_to_veneer
< -(1 << 25)
11408 || (signed) branch_to_veneer
>= (1 << 25))
11409 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
11410 "range"), output_bfd
);
11412 insn
|= (branch_to_veneer
>> 2) & 0xffffff;
11413 contents
[endianflip
^ index
] = insn
& 0xff;
11414 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
11415 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
11416 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
11420 case VFP11_ERRATUM_ARM_VENEER
:
11422 bfd_vma branch_from_veneer
;
11425 /* Take size of veneer into account. */
11426 branch_from_veneer
= errnode
->u
.v
.branch
->vma
11427 - errnode
->vma
- 12;
11429 if ((signed) branch_from_veneer
< -(1 << 25)
11430 || (signed) branch_from_veneer
>= (1 << 25))
11431 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
11432 "range"), output_bfd
);
11434 /* Original instruction. */
11435 insn
= errnode
->u
.v
.branch
->u
.b
.vfp_insn
;
11436 contents
[endianflip
^ index
] = insn
& 0xff;
11437 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
11438 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
11439 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
11441 /* Branch back to insn after original insn. */
11442 insn
= 0xea000000 | ((branch_from_veneer
>> 2) & 0xffffff);
11443 contents
[endianflip
^ (index
+ 4)] = insn
& 0xff;
11444 contents
[endianflip
^ (index
+ 5)] = (insn
>> 8) & 0xff;
11445 contents
[endianflip
^ (index
+ 6)] = (insn
>> 16) & 0xff;
11446 contents
[endianflip
^ (index
+ 7)] = (insn
>> 24) & 0xff;
11459 if (globals
->byteswap_code
)
11461 qsort (map
, mapcount
, sizeof (* map
), elf32_arm_compare_mapping
);
11464 for (i
= 0; i
< mapcount
; i
++)
11466 if (i
== mapcount
- 1)
11469 end
= map
[i
+ 1].vma
;
11471 switch (map
[i
].type
)
11474 /* Byte swap code words. */
11475 while (ptr
+ 3 < end
)
11477 tmp
= contents
[ptr
];
11478 contents
[ptr
] = contents
[ptr
+ 3];
11479 contents
[ptr
+ 3] = tmp
;
11480 tmp
= contents
[ptr
+ 1];
11481 contents
[ptr
+ 1] = contents
[ptr
+ 2];
11482 contents
[ptr
+ 2] = tmp
;
11488 /* Byte swap code halfwords. */
11489 while (ptr
+ 1 < end
)
11491 tmp
= contents
[ptr
];
11492 contents
[ptr
] = contents
[ptr
+ 1];
11493 contents
[ptr
+ 1] = tmp
;
11499 /* Leave data alone. */
11507 arm_data
->mapcount
= 0;
11508 arm_data
->mapsize
= 0;
11509 arm_data
->map
= NULL
;
11510 unrecord_section_with_arm_elf_section_data (sec
);
11516 unrecord_section_via_map_over_sections (bfd
* abfd ATTRIBUTE_UNUSED
,
11518 void * ignore ATTRIBUTE_UNUSED
)
11520 unrecord_section_with_arm_elf_section_data (sec
);
11524 elf32_arm_close_and_cleanup (bfd
* abfd
)
11526 if (abfd
->sections
)
11527 bfd_map_over_sections (abfd
,
11528 unrecord_section_via_map_over_sections
,
11531 return _bfd_elf_close_and_cleanup (abfd
);
11535 elf32_arm_bfd_free_cached_info (bfd
* abfd
)
11537 if (abfd
->sections
)
11538 bfd_map_over_sections (abfd
,
11539 unrecord_section_via_map_over_sections
,
11542 return _bfd_free_cached_info (abfd
);
11545 /* Display STT_ARM_TFUNC symbols as functions. */
11548 elf32_arm_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
11551 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
11553 if (ELF_ST_TYPE (elfsym
->internal_elf_sym
.st_info
) == STT_ARM_TFUNC
)
11554 elfsym
->symbol
.flags
|= BSF_FUNCTION
;
11558 /* Mangle thumb function symbols as we read them in. */
11561 elf32_arm_swap_symbol_in (bfd
* abfd
,
11564 Elf_Internal_Sym
*dst
)
11566 if (!bfd_elf32_swap_symbol_in (abfd
, psrc
, pshn
, dst
))
11569 /* New EABI objects mark thumb function symbols by setting the low bit of
11570 the address. Turn these into STT_ARM_TFUNC. */
11571 if (ELF_ST_TYPE (dst
->st_info
) == STT_FUNC
11572 && (dst
->st_value
& 1))
11574 dst
->st_info
= ELF_ST_INFO (ELF_ST_BIND (dst
->st_info
), STT_ARM_TFUNC
);
11575 dst
->st_value
&= ~(bfd_vma
) 1;
11581 /* Mangle thumb function symbols as we write them out. */
11584 elf32_arm_swap_symbol_out (bfd
*abfd
,
11585 const Elf_Internal_Sym
*src
,
11589 Elf_Internal_Sym newsym
;
11591 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
11592 of the address set, as per the new EABI. We do this unconditionally
11593 because objcopy does not set the elf header flags until after
11594 it writes out the symbol table. */
11595 if (ELF_ST_TYPE (src
->st_info
) == STT_ARM_TFUNC
)
11598 newsym
.st_info
= ELF_ST_INFO (ELF_ST_BIND (src
->st_info
), STT_FUNC
);
11599 if (newsym
.st_shndx
!= SHN_UNDEF
)
11601 /* Do this only for defined symbols. At link type, the static
11602 linker will simulate the work of dynamic linker of resolving
11603 symbols and will carry over the thumbness of found symbols to
11604 the output symbol table. It's not clear how it happens, but
11605 the thumbness of undefined symbols can well be different at
11606 runtime, and writing '1' for them will be confusing for users
11607 and possibly for dynamic linker itself.
11609 newsym
.st_value
|= 1;
11614 bfd_elf32_swap_symbol_out (abfd
, src
, cdst
, shndx
);
11617 /* Add the PT_ARM_EXIDX program header. */
11620 elf32_arm_modify_segment_map (bfd
*abfd
,
11621 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
11623 struct elf_segment_map
*m
;
11626 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
11627 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
11629 /* If there is already a PT_ARM_EXIDX header, then we do not
11630 want to add another one. This situation arises when running
11631 "strip"; the input binary already has the header. */
11632 m
= elf_tdata (abfd
)->segment_map
;
11633 while (m
&& m
->p_type
!= PT_ARM_EXIDX
)
11637 m
= bfd_zalloc (abfd
, sizeof (struct elf_segment_map
));
11640 m
->p_type
= PT_ARM_EXIDX
;
11642 m
->sections
[0] = sec
;
11644 m
->next
= elf_tdata (abfd
)->segment_map
;
11645 elf_tdata (abfd
)->segment_map
= m
;
11652 /* We may add a PT_ARM_EXIDX program header. */
11655 elf32_arm_additional_program_headers (bfd
*abfd
,
11656 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
11660 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
11661 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
11667 /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
11670 elf32_arm_is_function_type (unsigned int type
)
11672 return (type
== STT_FUNC
) || (type
== STT_ARM_TFUNC
);
11675 /* We use this to override swap_symbol_in and swap_symbol_out. */
11676 const struct elf_size_info elf32_arm_size_info
=
11678 sizeof (Elf32_External_Ehdr
),
11679 sizeof (Elf32_External_Phdr
),
11680 sizeof (Elf32_External_Shdr
),
11681 sizeof (Elf32_External_Rel
),
11682 sizeof (Elf32_External_Rela
),
11683 sizeof (Elf32_External_Sym
),
11684 sizeof (Elf32_External_Dyn
),
11685 sizeof (Elf_External_Note
),
11689 ELFCLASS32
, EV_CURRENT
,
11690 bfd_elf32_write_out_phdrs
,
11691 bfd_elf32_write_shdrs_and_ehdr
,
11692 bfd_elf32_checksum_contents
,
11693 bfd_elf32_write_relocs
,
11694 elf32_arm_swap_symbol_in
,
11695 elf32_arm_swap_symbol_out
,
11696 bfd_elf32_slurp_reloc_table
,
11697 bfd_elf32_slurp_symbol_table
,
11698 bfd_elf32_swap_dyn_in
,
11699 bfd_elf32_swap_dyn_out
,
11700 bfd_elf32_swap_reloc_in
,
11701 bfd_elf32_swap_reloc_out
,
11702 bfd_elf32_swap_reloca_in
,
11703 bfd_elf32_swap_reloca_out
11706 #define ELF_ARCH bfd_arch_arm
11707 #define ELF_MACHINE_CODE EM_ARM
11708 #ifdef __QNXTARGET__
11709 #define ELF_MAXPAGESIZE 0x1000
11711 #define ELF_MAXPAGESIZE 0x8000
11713 #define ELF_MINPAGESIZE 0x1000
11714 #define ELF_COMMONPAGESIZE 0x1000
11716 #define bfd_elf32_mkobject elf32_arm_mkobject
11718 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
11719 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
11720 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
11721 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
11722 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
11723 #define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free
11724 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
11725 #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
11726 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
11727 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
11728 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
11729 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
11730 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
11731 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
11733 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
11734 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
11735 #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
11736 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
11737 #define elf_backend_check_relocs elf32_arm_check_relocs
11738 #define elf_backend_relocate_section elf32_arm_relocate_section
11739 #define elf_backend_write_section elf32_arm_write_section
11740 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
11741 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
11742 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
11743 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
11744 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
11745 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
11746 #define elf_backend_post_process_headers elf32_arm_post_process_headers
11747 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
11748 #define elf_backend_object_p elf32_arm_object_p
11749 #define elf_backend_section_flags elf32_arm_section_flags
11750 #define elf_backend_fake_sections elf32_arm_fake_sections
11751 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
11752 #define elf_backend_final_write_processing elf32_arm_final_write_processing
11753 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
11754 #define elf_backend_symbol_processing elf32_arm_symbol_processing
11755 #define elf_backend_size_info elf32_arm_size_info
11756 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
11757 #define elf_backend_additional_program_headers elf32_arm_additional_program_headers
11758 #define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms
11759 #define elf_backend_begin_write_processing elf32_arm_begin_write_processing
11760 #define elf_backend_is_function_type elf32_arm_is_function_type
11762 #define elf_backend_can_refcount 1
11763 #define elf_backend_can_gc_sections 1
11764 #define elf_backend_plt_readonly 1
11765 #define elf_backend_want_got_plt 1
11766 #define elf_backend_want_plt_sym 0
11767 #define elf_backend_may_use_rel_p 1
11768 #define elf_backend_may_use_rela_p 0
11769 #define elf_backend_default_use_rela_p 0
11771 #define elf_backend_got_header_size 12
11773 #undef elf_backend_obj_attrs_vendor
11774 #define elf_backend_obj_attrs_vendor "aeabi"
11775 #undef elf_backend_obj_attrs_section
11776 #define elf_backend_obj_attrs_section ".ARM.attributes"
11777 #undef elf_backend_obj_attrs_arg_type
11778 #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
11779 #undef elf_backend_obj_attrs_section_type
11780 #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
11782 #include "elf32-target.h"
11784 /* VxWorks Targets. */
11786 #undef TARGET_LITTLE_SYM
11787 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
11788 #undef TARGET_LITTLE_NAME
11789 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
11790 #undef TARGET_BIG_SYM
11791 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
11792 #undef TARGET_BIG_NAME
11793 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
11795 /* Like elf32_arm_link_hash_table_create -- but overrides
11796 appropriately for VxWorks. */
11798 static struct bfd_link_hash_table
*
11799 elf32_arm_vxworks_link_hash_table_create (bfd
*abfd
)
11801 struct bfd_link_hash_table
*ret
;
11803 ret
= elf32_arm_link_hash_table_create (abfd
);
11806 struct elf32_arm_link_hash_table
*htab
11807 = (struct elf32_arm_link_hash_table
*) ret
;
11809 htab
->vxworks_p
= 1;
11815 elf32_arm_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
11817 elf32_arm_final_write_processing (abfd
, linker
);
11818 elf_vxworks_final_write_processing (abfd
, linker
);
11822 #define elf32_bed elf32_arm_vxworks_bed
11824 #undef bfd_elf32_bfd_link_hash_table_create
11825 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create
11826 #undef elf_backend_add_symbol_hook
11827 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
11828 #undef elf_backend_final_write_processing
11829 #define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing
11830 #undef elf_backend_emit_relocs
11831 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
11833 #undef elf_backend_may_use_rel_p
11834 #define elf_backend_may_use_rel_p 0
11835 #undef elf_backend_may_use_rela_p
11836 #define elf_backend_may_use_rela_p 1
11837 #undef elf_backend_default_use_rela_p
11838 #define elf_backend_default_use_rela_p 1
11839 #undef elf_backend_want_plt_sym
11840 #define elf_backend_want_plt_sym 1
11841 #undef ELF_MAXPAGESIZE
11842 #define ELF_MAXPAGESIZE 0x1000
11844 #include "elf32-target.h"
11847 /* Symbian OS Targets. */
11849 #undef TARGET_LITTLE_SYM
11850 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
11851 #undef TARGET_LITTLE_NAME
11852 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
11853 #undef TARGET_BIG_SYM
11854 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
11855 #undef TARGET_BIG_NAME
11856 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
11858 /* Like elf32_arm_link_hash_table_create -- but overrides
11859 appropriately for Symbian OS. */
11861 static struct bfd_link_hash_table
*
11862 elf32_arm_symbian_link_hash_table_create (bfd
*abfd
)
11864 struct bfd_link_hash_table
*ret
;
11866 ret
= elf32_arm_link_hash_table_create (abfd
);
11869 struct elf32_arm_link_hash_table
*htab
11870 = (struct elf32_arm_link_hash_table
*)ret
;
11871 /* There is no PLT header for Symbian OS. */
11872 htab
->plt_header_size
= 0;
11873 /* The PLT entries are each one instruction and one word. */
11874 htab
->plt_entry_size
= 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry
);
11875 htab
->symbian_p
= 1;
11876 /* Symbian uses armv5t or above, so use_blx is always true. */
11878 htab
->root
.is_relocatable_executable
= 1;
11883 static const struct bfd_elf_special_section
11884 elf32_arm_symbian_special_sections
[] =
11886 /* In a BPABI executable, the dynamic linking sections do not go in
11887 the loadable read-only segment. The post-linker may wish to
11888 refer to these sections, but they are not part of the final
11890 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC
, 0 },
11891 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB
, 0 },
11892 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM
, 0 },
11893 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS
, 0 },
11894 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH
, 0 },
11895 /* These sections do not need to be writable as the SymbianOS
11896 postlinker will arrange things so that no dynamic relocation is
11898 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY
, SHF_ALLOC
},
11899 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY
, SHF_ALLOC
},
11900 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY
, SHF_ALLOC
},
11901 { NULL
, 0, 0, 0, 0 }
11905 elf32_arm_symbian_begin_write_processing (bfd
*abfd
,
11906 struct bfd_link_info
*link_info
)
11908 /* BPABI objects are never loaded directly by an OS kernel; they are
11909 processed by a postlinker first, into an OS-specific format. If
11910 the D_PAGED bit is set on the file, BFD will align segments on
11911 page boundaries, so that an OS can directly map the file. With
11912 BPABI objects, that just results in wasted space. In addition,
11913 because we clear the D_PAGED bit, map_sections_to_segments will
11914 recognize that the program headers should not be mapped into any
11915 loadable segment. */
11916 abfd
->flags
&= ~D_PAGED
;
11917 elf32_arm_begin_write_processing (abfd
, link_info
);
11921 elf32_arm_symbian_modify_segment_map (bfd
*abfd
,
11922 struct bfd_link_info
*info
)
11924 struct elf_segment_map
*m
;
11927 /* BPABI shared libraries and executables should have a PT_DYNAMIC
11928 segment. However, because the .dynamic section is not marked
11929 with SEC_LOAD, the generic ELF code will not create such a
11931 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
11934 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
11935 if (m
->p_type
== PT_DYNAMIC
)
11940 m
= _bfd_elf_make_dynamic_segment (abfd
, dynsec
);
11941 m
->next
= elf_tdata (abfd
)->segment_map
;
11942 elf_tdata (abfd
)->segment_map
= m
;
11946 /* Also call the generic arm routine. */
11947 return elf32_arm_modify_segment_map (abfd
, info
);
11950 /* Return address for Ith PLT stub in section PLT, for relocation REL
11951 or (bfd_vma) -1 if it should not be included. */
11954 elf32_arm_symbian_plt_sym_val (bfd_vma i
, const asection
*plt
,
11955 const arelent
*rel ATTRIBUTE_UNUSED
)
11957 return plt
->vma
+ 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry
) * i
;
11962 #define elf32_bed elf32_arm_symbian_bed
11964 /* The dynamic sections are not allocated on SymbianOS; the postlinker
11965 will process them and then discard them. */
11966 #undef ELF_DYNAMIC_SEC_FLAGS
11967 #define ELF_DYNAMIC_SEC_FLAGS \
11968 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
11970 #undef elf_backend_add_symbol_hook
11971 #undef elf_backend_emit_relocs
11973 #undef bfd_elf32_bfd_link_hash_table_create
11974 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create
11975 #undef elf_backend_special_sections
11976 #define elf_backend_special_sections elf32_arm_symbian_special_sections
11977 #undef elf_backend_begin_write_processing
11978 #define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing
11979 #undef elf_backend_final_write_processing
11980 #define elf_backend_final_write_processing elf32_arm_final_write_processing
11982 #undef elf_backend_modify_segment_map
11983 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
11985 /* There is no .got section for BPABI objects, and hence no header. */
11986 #undef elf_backend_got_header_size
11987 #define elf_backend_got_header_size 0
11989 /* Similarly, there is no .got.plt section. */
11990 #undef elf_backend_want_got_plt
11991 #define elf_backend_want_got_plt 0
11993 #undef elf_backend_plt_sym_val
11994 #define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val
11996 #undef elf_backend_may_use_rel_p
11997 #define elf_backend_may_use_rel_p 1
11998 #undef elf_backend_may_use_rela_p
11999 #define elf_backend_may_use_rela_p 0
12000 #undef elf_backend_default_use_rela_p
12001 #define elf_backend_default_use_rela_p 0
12002 #undef elf_backend_want_plt_sym
12003 #define elf_backend_want_plt_sym 0
12004 #undef ELF_MAXPAGESIZE
12005 #define ELF_MAXPAGESIZE 0x8000
12007 #include "elf32-target.h"