1 /* 32-bit ELF support for ARM
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
3 2008 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
24 #include "libiberty.h"
27 #include "elf-vxworks.h"
30 /* Return the relocation section associated with NAME. HTAB is the
31 bfd's elf32_arm_link_hash_entry. */
32 #define RELOC_SECTION(HTAB, NAME) \
33 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
35 /* Return size of a relocation entry. HTAB is the bfd's
36 elf32_arm_link_hash_entry. */
37 #define RELOC_SIZE(HTAB) \
39 ? sizeof (Elf32_External_Rel) \
40 : sizeof (Elf32_External_Rela))
42 /* Return function to swap relocations in. HTAB is the bfd's
43 elf32_arm_link_hash_entry. */
44 #define SWAP_RELOC_IN(HTAB) \
46 ? bfd_elf32_swap_reloc_in \
47 : bfd_elf32_swap_reloca_in)
49 /* Return function to swap relocations out. HTAB is the bfd's
50 elf32_arm_link_hash_entry. */
51 #define SWAP_RELOC_OUT(HTAB) \
53 ? bfd_elf32_swap_reloc_out \
54 : bfd_elf32_swap_reloca_out)
56 #define elf_info_to_howto 0
57 #define elf_info_to_howto_rel elf32_arm_info_to_howto
59 #define ARM_ELF_ABI_VERSION 0
60 #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
62 static struct elf_backend_data elf32_arm_vxworks_bed
;
64 /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
65 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
68 static reloc_howto_type elf32_arm_howto_table_1
[] =
71 HOWTO (R_ARM_NONE
, /* type */
73 0, /* size (0 = byte, 1 = short, 2 = long) */
75 FALSE
, /* pc_relative */
77 complain_overflow_dont
,/* complain_on_overflow */
78 bfd_elf_generic_reloc
, /* special_function */
79 "R_ARM_NONE", /* name */
80 FALSE
, /* partial_inplace */
83 FALSE
), /* pcrel_offset */
85 HOWTO (R_ARM_PC24
, /* type */
87 2, /* size (0 = byte, 1 = short, 2 = long) */
89 TRUE
, /* pc_relative */
91 complain_overflow_signed
,/* complain_on_overflow */
92 bfd_elf_generic_reloc
, /* special_function */
93 "R_ARM_PC24", /* name */
94 FALSE
, /* partial_inplace */
95 0x00ffffff, /* src_mask */
96 0x00ffffff, /* dst_mask */
97 TRUE
), /* pcrel_offset */
100 HOWTO (R_ARM_ABS32
, /* type */
102 2, /* size (0 = byte, 1 = short, 2 = long) */
104 FALSE
, /* pc_relative */
106 complain_overflow_bitfield
,/* complain_on_overflow */
107 bfd_elf_generic_reloc
, /* special_function */
108 "R_ARM_ABS32", /* name */
109 FALSE
, /* partial_inplace */
110 0xffffffff, /* src_mask */
111 0xffffffff, /* dst_mask */
112 FALSE
), /* pcrel_offset */
114 /* standard 32bit pc-relative reloc */
115 HOWTO (R_ARM_REL32
, /* type */
117 2, /* size (0 = byte, 1 = short, 2 = long) */
119 TRUE
, /* pc_relative */
121 complain_overflow_bitfield
,/* complain_on_overflow */
122 bfd_elf_generic_reloc
, /* special_function */
123 "R_ARM_REL32", /* name */
124 FALSE
, /* partial_inplace */
125 0xffffffff, /* src_mask */
126 0xffffffff, /* dst_mask */
127 TRUE
), /* pcrel_offset */
129 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
130 HOWTO (R_ARM_LDR_PC_G0
, /* type */
132 0, /* size (0 = byte, 1 = short, 2 = long) */
134 TRUE
, /* pc_relative */
136 complain_overflow_dont
,/* complain_on_overflow */
137 bfd_elf_generic_reloc
, /* special_function */
138 "R_ARM_LDR_PC_G0", /* name */
139 FALSE
, /* partial_inplace */
140 0xffffffff, /* src_mask */
141 0xffffffff, /* dst_mask */
142 TRUE
), /* pcrel_offset */
144 /* 16 bit absolute */
145 HOWTO (R_ARM_ABS16
, /* type */
147 1, /* size (0 = byte, 1 = short, 2 = long) */
149 FALSE
, /* pc_relative */
151 complain_overflow_bitfield
,/* complain_on_overflow */
152 bfd_elf_generic_reloc
, /* special_function */
153 "R_ARM_ABS16", /* name */
154 FALSE
, /* partial_inplace */
155 0x0000ffff, /* src_mask */
156 0x0000ffff, /* dst_mask */
157 FALSE
), /* pcrel_offset */
159 /* 12 bit absolute */
160 HOWTO (R_ARM_ABS12
, /* type */
162 2, /* size (0 = byte, 1 = short, 2 = long) */
164 FALSE
, /* pc_relative */
166 complain_overflow_bitfield
,/* complain_on_overflow */
167 bfd_elf_generic_reloc
, /* special_function */
168 "R_ARM_ABS12", /* name */
169 FALSE
, /* partial_inplace */
170 0x00000fff, /* src_mask */
171 0x00000fff, /* dst_mask */
172 FALSE
), /* pcrel_offset */
174 HOWTO (R_ARM_THM_ABS5
, /* type */
176 1, /* size (0 = byte, 1 = short, 2 = long) */
178 FALSE
, /* pc_relative */
180 complain_overflow_bitfield
,/* complain_on_overflow */
181 bfd_elf_generic_reloc
, /* special_function */
182 "R_ARM_THM_ABS5", /* name */
183 FALSE
, /* partial_inplace */
184 0x000007e0, /* src_mask */
185 0x000007e0, /* dst_mask */
186 FALSE
), /* pcrel_offset */
189 HOWTO (R_ARM_ABS8
, /* type */
191 0, /* size (0 = byte, 1 = short, 2 = long) */
193 FALSE
, /* pc_relative */
195 complain_overflow_bitfield
,/* complain_on_overflow */
196 bfd_elf_generic_reloc
, /* special_function */
197 "R_ARM_ABS8", /* name */
198 FALSE
, /* partial_inplace */
199 0x000000ff, /* src_mask */
200 0x000000ff, /* dst_mask */
201 FALSE
), /* pcrel_offset */
203 HOWTO (R_ARM_SBREL32
, /* type */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
207 FALSE
, /* pc_relative */
209 complain_overflow_dont
,/* complain_on_overflow */
210 bfd_elf_generic_reloc
, /* special_function */
211 "R_ARM_SBREL32", /* name */
212 FALSE
, /* partial_inplace */
213 0xffffffff, /* src_mask */
214 0xffffffff, /* dst_mask */
215 FALSE
), /* pcrel_offset */
217 HOWTO (R_ARM_THM_CALL
, /* type */
219 2, /* size (0 = byte, 1 = short, 2 = long) */
221 TRUE
, /* pc_relative */
223 complain_overflow_signed
,/* complain_on_overflow */
224 bfd_elf_generic_reloc
, /* special_function */
225 "R_ARM_THM_CALL", /* name */
226 FALSE
, /* partial_inplace */
227 0x07ff07ff, /* src_mask */
228 0x07ff07ff, /* dst_mask */
229 TRUE
), /* pcrel_offset */
231 HOWTO (R_ARM_THM_PC8
, /* type */
233 1, /* size (0 = byte, 1 = short, 2 = long) */
235 TRUE
, /* pc_relative */
237 complain_overflow_signed
,/* complain_on_overflow */
238 bfd_elf_generic_reloc
, /* special_function */
239 "R_ARM_THM_PC8", /* name */
240 FALSE
, /* partial_inplace */
241 0x000000ff, /* src_mask */
242 0x000000ff, /* dst_mask */
243 TRUE
), /* pcrel_offset */
245 HOWTO (R_ARM_BREL_ADJ
, /* type */
247 1, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE
, /* pc_relative */
251 complain_overflow_signed
,/* complain_on_overflow */
252 bfd_elf_generic_reloc
, /* special_function */
253 "R_ARM_BREL_ADJ", /* name */
254 FALSE
, /* partial_inplace */
255 0xffffffff, /* src_mask */
256 0xffffffff, /* dst_mask */
257 FALSE
), /* pcrel_offset */
259 HOWTO (R_ARM_SWI24
, /* type */
261 0, /* size (0 = byte, 1 = short, 2 = long) */
263 FALSE
, /* pc_relative */
265 complain_overflow_signed
,/* complain_on_overflow */
266 bfd_elf_generic_reloc
, /* special_function */
267 "R_ARM_SWI24", /* name */
268 FALSE
, /* partial_inplace */
269 0x00000000, /* src_mask */
270 0x00000000, /* dst_mask */
271 FALSE
), /* pcrel_offset */
273 HOWTO (R_ARM_THM_SWI8
, /* type */
275 0, /* size (0 = byte, 1 = short, 2 = long) */
277 FALSE
, /* pc_relative */
279 complain_overflow_signed
,/* complain_on_overflow */
280 bfd_elf_generic_reloc
, /* special_function */
281 "R_ARM_SWI8", /* name */
282 FALSE
, /* partial_inplace */
283 0x00000000, /* src_mask */
284 0x00000000, /* dst_mask */
285 FALSE
), /* pcrel_offset */
287 /* BLX instruction for the ARM. */
288 HOWTO (R_ARM_XPC25
, /* type */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
292 TRUE
, /* pc_relative */
294 complain_overflow_signed
,/* complain_on_overflow */
295 bfd_elf_generic_reloc
, /* special_function */
296 "R_ARM_XPC25", /* name */
297 FALSE
, /* partial_inplace */
298 0x00ffffff, /* src_mask */
299 0x00ffffff, /* dst_mask */
300 TRUE
), /* pcrel_offset */
302 /* BLX instruction for the Thumb. */
303 HOWTO (R_ARM_THM_XPC22
, /* type */
305 2, /* size (0 = byte, 1 = short, 2 = long) */
307 TRUE
, /* pc_relative */
309 complain_overflow_signed
,/* complain_on_overflow */
310 bfd_elf_generic_reloc
, /* special_function */
311 "R_ARM_THM_XPC22", /* name */
312 FALSE
, /* partial_inplace */
313 0x07ff07ff, /* src_mask */
314 0x07ff07ff, /* dst_mask */
315 TRUE
), /* pcrel_offset */
317 /* Dynamic TLS relocations. */
319 HOWTO (R_ARM_TLS_DTPMOD32
, /* type */
321 2, /* size (0 = byte, 1 = short, 2 = long) */
323 FALSE
, /* pc_relative */
325 complain_overflow_bitfield
,/* complain_on_overflow */
326 bfd_elf_generic_reloc
, /* special_function */
327 "R_ARM_TLS_DTPMOD32", /* name */
328 TRUE
, /* partial_inplace */
329 0xffffffff, /* src_mask */
330 0xffffffff, /* dst_mask */
331 FALSE
), /* pcrel_offset */
333 HOWTO (R_ARM_TLS_DTPOFF32
, /* type */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
337 FALSE
, /* pc_relative */
339 complain_overflow_bitfield
,/* complain_on_overflow */
340 bfd_elf_generic_reloc
, /* special_function */
341 "R_ARM_TLS_DTPOFF32", /* name */
342 TRUE
, /* partial_inplace */
343 0xffffffff, /* src_mask */
344 0xffffffff, /* dst_mask */
345 FALSE
), /* pcrel_offset */
347 HOWTO (R_ARM_TLS_TPOFF32
, /* type */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
351 FALSE
, /* pc_relative */
353 complain_overflow_bitfield
,/* complain_on_overflow */
354 bfd_elf_generic_reloc
, /* special_function */
355 "R_ARM_TLS_TPOFF32", /* name */
356 TRUE
, /* partial_inplace */
357 0xffffffff, /* src_mask */
358 0xffffffff, /* dst_mask */
359 FALSE
), /* pcrel_offset */
361 /* Relocs used in ARM Linux */
363 HOWTO (R_ARM_COPY
, /* type */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
367 FALSE
, /* pc_relative */
369 complain_overflow_bitfield
,/* complain_on_overflow */
370 bfd_elf_generic_reloc
, /* special_function */
371 "R_ARM_COPY", /* name */
372 TRUE
, /* partial_inplace */
373 0xffffffff, /* src_mask */
374 0xffffffff, /* dst_mask */
375 FALSE
), /* pcrel_offset */
377 HOWTO (R_ARM_GLOB_DAT
, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 FALSE
, /* pc_relative */
383 complain_overflow_bitfield
,/* complain_on_overflow */
384 bfd_elf_generic_reloc
, /* special_function */
385 "R_ARM_GLOB_DAT", /* name */
386 TRUE
, /* partial_inplace */
387 0xffffffff, /* src_mask */
388 0xffffffff, /* dst_mask */
389 FALSE
), /* pcrel_offset */
391 HOWTO (R_ARM_JUMP_SLOT
, /* type */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
395 FALSE
, /* pc_relative */
397 complain_overflow_bitfield
,/* complain_on_overflow */
398 bfd_elf_generic_reloc
, /* special_function */
399 "R_ARM_JUMP_SLOT", /* name */
400 TRUE
, /* partial_inplace */
401 0xffffffff, /* src_mask */
402 0xffffffff, /* dst_mask */
403 FALSE
), /* pcrel_offset */
405 HOWTO (R_ARM_RELATIVE
, /* type */
407 2, /* size (0 = byte, 1 = short, 2 = long) */
409 FALSE
, /* pc_relative */
411 complain_overflow_bitfield
,/* complain_on_overflow */
412 bfd_elf_generic_reloc
, /* special_function */
413 "R_ARM_RELATIVE", /* name */
414 TRUE
, /* partial_inplace */
415 0xffffffff, /* src_mask */
416 0xffffffff, /* dst_mask */
417 FALSE
), /* pcrel_offset */
419 HOWTO (R_ARM_GOTOFF32
, /* type */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
423 FALSE
, /* pc_relative */
425 complain_overflow_bitfield
,/* complain_on_overflow */
426 bfd_elf_generic_reloc
, /* special_function */
427 "R_ARM_GOTOFF32", /* name */
428 TRUE
, /* partial_inplace */
429 0xffffffff, /* src_mask */
430 0xffffffff, /* dst_mask */
431 FALSE
), /* pcrel_offset */
433 HOWTO (R_ARM_GOTPC
, /* type */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
437 TRUE
, /* pc_relative */
439 complain_overflow_bitfield
,/* complain_on_overflow */
440 bfd_elf_generic_reloc
, /* special_function */
441 "R_ARM_GOTPC", /* name */
442 TRUE
, /* partial_inplace */
443 0xffffffff, /* src_mask */
444 0xffffffff, /* dst_mask */
445 TRUE
), /* pcrel_offset */
447 HOWTO (R_ARM_GOT32
, /* type */
449 2, /* size (0 = byte, 1 = short, 2 = long) */
451 FALSE
, /* pc_relative */
453 complain_overflow_bitfield
,/* complain_on_overflow */
454 bfd_elf_generic_reloc
, /* special_function */
455 "R_ARM_GOT32", /* name */
456 TRUE
, /* partial_inplace */
457 0xffffffff, /* src_mask */
458 0xffffffff, /* dst_mask */
459 FALSE
), /* pcrel_offset */
461 HOWTO (R_ARM_PLT32
, /* type */
463 2, /* size (0 = byte, 1 = short, 2 = long) */
465 TRUE
, /* pc_relative */
467 complain_overflow_bitfield
,/* complain_on_overflow */
468 bfd_elf_generic_reloc
, /* special_function */
469 "R_ARM_PLT32", /* name */
470 FALSE
, /* partial_inplace */
471 0x00ffffff, /* src_mask */
472 0x00ffffff, /* dst_mask */
473 TRUE
), /* pcrel_offset */
475 HOWTO (R_ARM_CALL
, /* type */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
479 TRUE
, /* pc_relative */
481 complain_overflow_signed
,/* complain_on_overflow */
482 bfd_elf_generic_reloc
, /* special_function */
483 "R_ARM_CALL", /* name */
484 FALSE
, /* partial_inplace */
485 0x00ffffff, /* src_mask */
486 0x00ffffff, /* dst_mask */
487 TRUE
), /* pcrel_offset */
489 HOWTO (R_ARM_JUMP24
, /* type */
491 2, /* size (0 = byte, 1 = short, 2 = long) */
493 TRUE
, /* pc_relative */
495 complain_overflow_signed
,/* complain_on_overflow */
496 bfd_elf_generic_reloc
, /* special_function */
497 "R_ARM_JUMP24", /* name */
498 FALSE
, /* partial_inplace */
499 0x00ffffff, /* src_mask */
500 0x00ffffff, /* dst_mask */
501 TRUE
), /* pcrel_offset */
503 HOWTO (R_ARM_THM_JUMP24
, /* type */
505 2, /* size (0 = byte, 1 = short, 2 = long) */
507 TRUE
, /* pc_relative */
509 complain_overflow_signed
,/* complain_on_overflow */
510 bfd_elf_generic_reloc
, /* special_function */
511 "R_ARM_THM_JUMP24", /* name */
512 FALSE
, /* partial_inplace */
513 0x07ff2fff, /* src_mask */
514 0x07ff2fff, /* dst_mask */
515 TRUE
), /* pcrel_offset */
517 HOWTO (R_ARM_BASE_ABS
, /* type */
519 2, /* size (0 = byte, 1 = short, 2 = long) */
521 FALSE
, /* pc_relative */
523 complain_overflow_dont
,/* complain_on_overflow */
524 bfd_elf_generic_reloc
, /* special_function */
525 "R_ARM_BASE_ABS", /* name */
526 FALSE
, /* partial_inplace */
527 0xffffffff, /* src_mask */
528 0xffffffff, /* dst_mask */
529 FALSE
), /* pcrel_offset */
531 HOWTO (R_ARM_ALU_PCREL7_0
, /* type */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
535 TRUE
, /* pc_relative */
537 complain_overflow_dont
,/* complain_on_overflow */
538 bfd_elf_generic_reloc
, /* special_function */
539 "R_ARM_ALU_PCREL_7_0", /* name */
540 FALSE
, /* partial_inplace */
541 0x00000fff, /* src_mask */
542 0x00000fff, /* dst_mask */
543 TRUE
), /* pcrel_offset */
545 HOWTO (R_ARM_ALU_PCREL15_8
, /* type */
547 2, /* size (0 = byte, 1 = short, 2 = long) */
549 TRUE
, /* pc_relative */
551 complain_overflow_dont
,/* complain_on_overflow */
552 bfd_elf_generic_reloc
, /* special_function */
553 "R_ARM_ALU_PCREL_15_8",/* name */
554 FALSE
, /* partial_inplace */
555 0x00000fff, /* src_mask */
556 0x00000fff, /* dst_mask */
557 TRUE
), /* pcrel_offset */
559 HOWTO (R_ARM_ALU_PCREL23_15
, /* type */
561 2, /* size (0 = byte, 1 = short, 2 = long) */
563 TRUE
, /* pc_relative */
565 complain_overflow_dont
,/* complain_on_overflow */
566 bfd_elf_generic_reloc
, /* special_function */
567 "R_ARM_ALU_PCREL_23_15",/* name */
568 FALSE
, /* partial_inplace */
569 0x00000fff, /* src_mask */
570 0x00000fff, /* dst_mask */
571 TRUE
), /* pcrel_offset */
573 HOWTO (R_ARM_LDR_SBREL_11_0
, /* type */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE
, /* pc_relative */
579 complain_overflow_dont
,/* complain_on_overflow */
580 bfd_elf_generic_reloc
, /* special_function */
581 "R_ARM_LDR_SBREL_11_0",/* name */
582 FALSE
, /* partial_inplace */
583 0x00000fff, /* src_mask */
584 0x00000fff, /* dst_mask */
585 FALSE
), /* pcrel_offset */
587 HOWTO (R_ARM_ALU_SBREL_19_12
, /* type */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
591 FALSE
, /* pc_relative */
593 complain_overflow_dont
,/* complain_on_overflow */
594 bfd_elf_generic_reloc
, /* special_function */
595 "R_ARM_ALU_SBREL_19_12",/* name */
596 FALSE
, /* partial_inplace */
597 0x000ff000, /* src_mask */
598 0x000ff000, /* dst_mask */
599 FALSE
), /* pcrel_offset */
601 HOWTO (R_ARM_ALU_SBREL_27_20
, /* type */
603 2, /* size (0 = byte, 1 = short, 2 = long) */
605 FALSE
, /* pc_relative */
607 complain_overflow_dont
,/* complain_on_overflow */
608 bfd_elf_generic_reloc
, /* special_function */
609 "R_ARM_ALU_SBREL_27_20",/* name */
610 FALSE
, /* partial_inplace */
611 0x0ff00000, /* src_mask */
612 0x0ff00000, /* dst_mask */
613 FALSE
), /* pcrel_offset */
615 HOWTO (R_ARM_TARGET1
, /* type */
617 2, /* size (0 = byte, 1 = short, 2 = long) */
619 FALSE
, /* pc_relative */
621 complain_overflow_dont
,/* complain_on_overflow */
622 bfd_elf_generic_reloc
, /* special_function */
623 "R_ARM_TARGET1", /* name */
624 FALSE
, /* partial_inplace */
625 0xffffffff, /* src_mask */
626 0xffffffff, /* dst_mask */
627 FALSE
), /* pcrel_offset */
629 HOWTO (R_ARM_ROSEGREL32
, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 FALSE
, /* pc_relative */
635 complain_overflow_dont
,/* complain_on_overflow */
636 bfd_elf_generic_reloc
, /* special_function */
637 "R_ARM_ROSEGREL32", /* name */
638 FALSE
, /* partial_inplace */
639 0xffffffff, /* src_mask */
640 0xffffffff, /* dst_mask */
641 FALSE
), /* pcrel_offset */
643 HOWTO (R_ARM_V4BX
, /* type */
645 2, /* size (0 = byte, 1 = short, 2 = long) */
647 FALSE
, /* pc_relative */
649 complain_overflow_dont
,/* complain_on_overflow */
650 bfd_elf_generic_reloc
, /* special_function */
651 "R_ARM_V4BX", /* name */
652 FALSE
, /* partial_inplace */
653 0xffffffff, /* src_mask */
654 0xffffffff, /* dst_mask */
655 FALSE
), /* pcrel_offset */
657 HOWTO (R_ARM_TARGET2
, /* type */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
661 FALSE
, /* pc_relative */
663 complain_overflow_signed
,/* complain_on_overflow */
664 bfd_elf_generic_reloc
, /* special_function */
665 "R_ARM_TARGET2", /* name */
666 FALSE
, /* partial_inplace */
667 0xffffffff, /* src_mask */
668 0xffffffff, /* dst_mask */
669 TRUE
), /* pcrel_offset */
671 HOWTO (R_ARM_PREL31
, /* type */
673 2, /* size (0 = byte, 1 = short, 2 = long) */
675 TRUE
, /* pc_relative */
677 complain_overflow_signed
,/* complain_on_overflow */
678 bfd_elf_generic_reloc
, /* special_function */
679 "R_ARM_PREL31", /* name */
680 FALSE
, /* partial_inplace */
681 0x7fffffff, /* src_mask */
682 0x7fffffff, /* dst_mask */
683 TRUE
), /* pcrel_offset */
685 HOWTO (R_ARM_MOVW_ABS_NC
, /* type */
687 2, /* size (0 = byte, 1 = short, 2 = long) */
689 FALSE
, /* pc_relative */
691 complain_overflow_dont
,/* complain_on_overflow */
692 bfd_elf_generic_reloc
, /* special_function */
693 "R_ARM_MOVW_ABS_NC", /* name */
694 FALSE
, /* partial_inplace */
695 0x000f0fff, /* src_mask */
696 0x000f0fff, /* dst_mask */
697 FALSE
), /* pcrel_offset */
699 HOWTO (R_ARM_MOVT_ABS
, /* type */
701 2, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE
, /* pc_relative */
705 complain_overflow_bitfield
,/* complain_on_overflow */
706 bfd_elf_generic_reloc
, /* special_function */
707 "R_ARM_MOVT_ABS", /* name */
708 FALSE
, /* partial_inplace */
709 0x000f0fff, /* src_mask */
710 0x000f0fff, /* dst_mask */
711 FALSE
), /* pcrel_offset */
713 HOWTO (R_ARM_MOVW_PREL_NC
, /* type */
715 2, /* size (0 = byte, 1 = short, 2 = long) */
717 TRUE
, /* pc_relative */
719 complain_overflow_dont
,/* complain_on_overflow */
720 bfd_elf_generic_reloc
, /* special_function */
721 "R_ARM_MOVW_PREL_NC", /* name */
722 FALSE
, /* partial_inplace */
723 0x000f0fff, /* src_mask */
724 0x000f0fff, /* dst_mask */
725 TRUE
), /* pcrel_offset */
727 HOWTO (R_ARM_MOVT_PREL
, /* type */
729 2, /* size (0 = byte, 1 = short, 2 = long) */
731 TRUE
, /* pc_relative */
733 complain_overflow_bitfield
,/* complain_on_overflow */
734 bfd_elf_generic_reloc
, /* special_function */
735 "R_ARM_MOVT_PREL", /* name */
736 FALSE
, /* partial_inplace */
737 0x000f0fff, /* src_mask */
738 0x000f0fff, /* dst_mask */
739 TRUE
), /* pcrel_offset */
741 HOWTO (R_ARM_THM_MOVW_ABS_NC
, /* type */
743 2, /* size (0 = byte, 1 = short, 2 = long) */
745 FALSE
, /* pc_relative */
747 complain_overflow_dont
,/* complain_on_overflow */
748 bfd_elf_generic_reloc
, /* special_function */
749 "R_ARM_THM_MOVW_ABS_NC",/* name */
750 FALSE
, /* partial_inplace */
751 0x040f70ff, /* src_mask */
752 0x040f70ff, /* dst_mask */
753 FALSE
), /* pcrel_offset */
755 HOWTO (R_ARM_THM_MOVT_ABS
, /* type */
757 2, /* size (0 = byte, 1 = short, 2 = long) */
759 FALSE
, /* pc_relative */
761 complain_overflow_bitfield
,/* complain_on_overflow */
762 bfd_elf_generic_reloc
, /* special_function */
763 "R_ARM_THM_MOVT_ABS", /* name */
764 FALSE
, /* partial_inplace */
765 0x040f70ff, /* src_mask */
766 0x040f70ff, /* dst_mask */
767 FALSE
), /* pcrel_offset */
769 HOWTO (R_ARM_THM_MOVW_PREL_NC
,/* type */
771 2, /* size (0 = byte, 1 = short, 2 = long) */
773 TRUE
, /* pc_relative */
775 complain_overflow_dont
,/* complain_on_overflow */
776 bfd_elf_generic_reloc
, /* special_function */
777 "R_ARM_THM_MOVW_PREL_NC",/* name */
778 FALSE
, /* partial_inplace */
779 0x040f70ff, /* src_mask */
780 0x040f70ff, /* dst_mask */
781 TRUE
), /* pcrel_offset */
783 HOWTO (R_ARM_THM_MOVT_PREL
, /* type */
785 2, /* size (0 = byte, 1 = short, 2 = long) */
787 TRUE
, /* pc_relative */
789 complain_overflow_bitfield
,/* complain_on_overflow */
790 bfd_elf_generic_reloc
, /* special_function */
791 "R_ARM_THM_MOVT_PREL", /* name */
792 FALSE
, /* partial_inplace */
793 0x040f70ff, /* src_mask */
794 0x040f70ff, /* dst_mask */
795 TRUE
), /* pcrel_offset */
797 HOWTO (R_ARM_THM_JUMP19
, /* type */
799 2, /* size (0 = byte, 1 = short, 2 = long) */
801 TRUE
, /* pc_relative */
803 complain_overflow_signed
,/* complain_on_overflow */
804 bfd_elf_generic_reloc
, /* special_function */
805 "R_ARM_THM_JUMP19", /* name */
806 FALSE
, /* partial_inplace */
807 0x043f2fff, /* src_mask */
808 0x043f2fff, /* dst_mask */
809 TRUE
), /* pcrel_offset */
811 HOWTO (R_ARM_THM_JUMP6
, /* type */
813 1, /* size (0 = byte, 1 = short, 2 = long) */
815 TRUE
, /* pc_relative */
817 complain_overflow_unsigned
,/* complain_on_overflow */
818 bfd_elf_generic_reloc
, /* special_function */
819 "R_ARM_THM_JUMP6", /* name */
820 FALSE
, /* partial_inplace */
821 0x02f8, /* src_mask */
822 0x02f8, /* dst_mask */
823 TRUE
), /* pcrel_offset */
825 /* These are declared as 13-bit signed relocations because we can
826 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
828 HOWTO (R_ARM_THM_ALU_PREL_11_0
,/* type */
830 2, /* size (0 = byte, 1 = short, 2 = long) */
832 TRUE
, /* pc_relative */
834 complain_overflow_dont
,/* complain_on_overflow */
835 bfd_elf_generic_reloc
, /* special_function */
836 "R_ARM_THM_ALU_PREL_11_0",/* name */
837 FALSE
, /* partial_inplace */
838 0xffffffff, /* src_mask */
839 0xffffffff, /* dst_mask */
840 TRUE
), /* pcrel_offset */
842 HOWTO (R_ARM_THM_PC12
, /* type */
844 2, /* size (0 = byte, 1 = short, 2 = long) */
846 TRUE
, /* pc_relative */
848 complain_overflow_dont
,/* complain_on_overflow */
849 bfd_elf_generic_reloc
, /* special_function */
850 "R_ARM_THM_PC12", /* name */
851 FALSE
, /* partial_inplace */
852 0xffffffff, /* src_mask */
853 0xffffffff, /* dst_mask */
854 TRUE
), /* pcrel_offset */
856 HOWTO (R_ARM_ABS32_NOI
, /* type */
858 2, /* size (0 = byte, 1 = short, 2 = long) */
860 FALSE
, /* pc_relative */
862 complain_overflow_dont
,/* complain_on_overflow */
863 bfd_elf_generic_reloc
, /* special_function */
864 "R_ARM_ABS32_NOI", /* name */
865 FALSE
, /* partial_inplace */
866 0xffffffff, /* src_mask */
867 0xffffffff, /* dst_mask */
868 FALSE
), /* pcrel_offset */
870 HOWTO (R_ARM_REL32_NOI
, /* type */
872 2, /* size (0 = byte, 1 = short, 2 = long) */
874 TRUE
, /* pc_relative */
876 complain_overflow_dont
,/* complain_on_overflow */
877 bfd_elf_generic_reloc
, /* special_function */
878 "R_ARM_REL32_NOI", /* name */
879 FALSE
, /* partial_inplace */
880 0xffffffff, /* src_mask */
881 0xffffffff, /* dst_mask */
882 FALSE
), /* pcrel_offset */
884 /* Group relocations. */
886 HOWTO (R_ARM_ALU_PC_G0_NC
, /* type */
888 2, /* size (0 = byte, 1 = short, 2 = long) */
890 TRUE
, /* pc_relative */
892 complain_overflow_dont
,/* complain_on_overflow */
893 bfd_elf_generic_reloc
, /* special_function */
894 "R_ARM_ALU_PC_G0_NC", /* name */
895 FALSE
, /* partial_inplace */
896 0xffffffff, /* src_mask */
897 0xffffffff, /* dst_mask */
898 TRUE
), /* pcrel_offset */
900 HOWTO (R_ARM_ALU_PC_G0
, /* type */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
904 TRUE
, /* pc_relative */
906 complain_overflow_dont
,/* complain_on_overflow */
907 bfd_elf_generic_reloc
, /* special_function */
908 "R_ARM_ALU_PC_G0", /* name */
909 FALSE
, /* partial_inplace */
910 0xffffffff, /* src_mask */
911 0xffffffff, /* dst_mask */
912 TRUE
), /* pcrel_offset */
914 HOWTO (R_ARM_ALU_PC_G1_NC
, /* type */
916 2, /* size (0 = byte, 1 = short, 2 = long) */
918 TRUE
, /* pc_relative */
920 complain_overflow_dont
,/* complain_on_overflow */
921 bfd_elf_generic_reloc
, /* special_function */
922 "R_ARM_ALU_PC_G1_NC", /* name */
923 FALSE
, /* partial_inplace */
924 0xffffffff, /* src_mask */
925 0xffffffff, /* dst_mask */
926 TRUE
), /* pcrel_offset */
928 HOWTO (R_ARM_ALU_PC_G1
, /* type */
930 2, /* size (0 = byte, 1 = short, 2 = long) */
932 TRUE
, /* pc_relative */
934 complain_overflow_dont
,/* complain_on_overflow */
935 bfd_elf_generic_reloc
, /* special_function */
936 "R_ARM_ALU_PC_G1", /* name */
937 FALSE
, /* partial_inplace */
938 0xffffffff, /* src_mask */
939 0xffffffff, /* dst_mask */
940 TRUE
), /* pcrel_offset */
942 HOWTO (R_ARM_ALU_PC_G2
, /* type */
944 2, /* size (0 = byte, 1 = short, 2 = long) */
946 TRUE
, /* pc_relative */
948 complain_overflow_dont
,/* complain_on_overflow */
949 bfd_elf_generic_reloc
, /* special_function */
950 "R_ARM_ALU_PC_G2", /* name */
951 FALSE
, /* partial_inplace */
952 0xffffffff, /* src_mask */
953 0xffffffff, /* dst_mask */
954 TRUE
), /* pcrel_offset */
956 HOWTO (R_ARM_LDR_PC_G1
, /* type */
958 2, /* size (0 = byte, 1 = short, 2 = long) */
960 TRUE
, /* pc_relative */
962 complain_overflow_dont
,/* complain_on_overflow */
963 bfd_elf_generic_reloc
, /* special_function */
964 "R_ARM_LDR_PC_G1", /* name */
965 FALSE
, /* partial_inplace */
966 0xffffffff, /* src_mask */
967 0xffffffff, /* dst_mask */
968 TRUE
), /* pcrel_offset */
970 HOWTO (R_ARM_LDR_PC_G2
, /* type */
972 2, /* size (0 = byte, 1 = short, 2 = long) */
974 TRUE
, /* pc_relative */
976 complain_overflow_dont
,/* complain_on_overflow */
977 bfd_elf_generic_reloc
, /* special_function */
978 "R_ARM_LDR_PC_G2", /* name */
979 FALSE
, /* partial_inplace */
980 0xffffffff, /* src_mask */
981 0xffffffff, /* dst_mask */
982 TRUE
), /* pcrel_offset */
984 HOWTO (R_ARM_LDRS_PC_G0
, /* type */
986 2, /* size (0 = byte, 1 = short, 2 = long) */
988 TRUE
, /* pc_relative */
990 complain_overflow_dont
,/* complain_on_overflow */
991 bfd_elf_generic_reloc
, /* special_function */
992 "R_ARM_LDRS_PC_G0", /* name */
993 FALSE
, /* partial_inplace */
994 0xffffffff, /* src_mask */
995 0xffffffff, /* dst_mask */
996 TRUE
), /* pcrel_offset */
998 HOWTO (R_ARM_LDRS_PC_G1
, /* type */
1000 2, /* size (0 = byte, 1 = short, 2 = long) */
1002 TRUE
, /* pc_relative */
1004 complain_overflow_dont
,/* complain_on_overflow */
1005 bfd_elf_generic_reloc
, /* special_function */
1006 "R_ARM_LDRS_PC_G1", /* name */
1007 FALSE
, /* partial_inplace */
1008 0xffffffff, /* src_mask */
1009 0xffffffff, /* dst_mask */
1010 TRUE
), /* pcrel_offset */
1012 HOWTO (R_ARM_LDRS_PC_G2
, /* type */
1014 2, /* size (0 = byte, 1 = short, 2 = long) */
1016 TRUE
, /* pc_relative */
1018 complain_overflow_dont
,/* complain_on_overflow */
1019 bfd_elf_generic_reloc
, /* special_function */
1020 "R_ARM_LDRS_PC_G2", /* name */
1021 FALSE
, /* partial_inplace */
1022 0xffffffff, /* src_mask */
1023 0xffffffff, /* dst_mask */
1024 TRUE
), /* pcrel_offset */
1026 HOWTO (R_ARM_LDC_PC_G0
, /* type */
1028 2, /* size (0 = byte, 1 = short, 2 = long) */
1030 TRUE
, /* pc_relative */
1032 complain_overflow_dont
,/* complain_on_overflow */
1033 bfd_elf_generic_reloc
, /* special_function */
1034 "R_ARM_LDC_PC_G0", /* name */
1035 FALSE
, /* partial_inplace */
1036 0xffffffff, /* src_mask */
1037 0xffffffff, /* dst_mask */
1038 TRUE
), /* pcrel_offset */
1040 HOWTO (R_ARM_LDC_PC_G1
, /* type */
1042 2, /* size (0 = byte, 1 = short, 2 = long) */
1044 TRUE
, /* pc_relative */
1046 complain_overflow_dont
,/* complain_on_overflow */
1047 bfd_elf_generic_reloc
, /* special_function */
1048 "R_ARM_LDC_PC_G1", /* name */
1049 FALSE
, /* partial_inplace */
1050 0xffffffff, /* src_mask */
1051 0xffffffff, /* dst_mask */
1052 TRUE
), /* pcrel_offset */
1054 HOWTO (R_ARM_LDC_PC_G2
, /* type */
1056 2, /* size (0 = byte, 1 = short, 2 = long) */
1058 TRUE
, /* pc_relative */
1060 complain_overflow_dont
,/* complain_on_overflow */
1061 bfd_elf_generic_reloc
, /* special_function */
1062 "R_ARM_LDC_PC_G2", /* name */
1063 FALSE
, /* partial_inplace */
1064 0xffffffff, /* src_mask */
1065 0xffffffff, /* dst_mask */
1066 TRUE
), /* pcrel_offset */
1068 HOWTO (R_ARM_ALU_SB_G0_NC
, /* type */
1070 2, /* size (0 = byte, 1 = short, 2 = long) */
1072 TRUE
, /* pc_relative */
1074 complain_overflow_dont
,/* complain_on_overflow */
1075 bfd_elf_generic_reloc
, /* special_function */
1076 "R_ARM_ALU_SB_G0_NC", /* name */
1077 FALSE
, /* partial_inplace */
1078 0xffffffff, /* src_mask */
1079 0xffffffff, /* dst_mask */
1080 TRUE
), /* pcrel_offset */
1082 HOWTO (R_ARM_ALU_SB_G0
, /* type */
1084 2, /* size (0 = byte, 1 = short, 2 = long) */
1086 TRUE
, /* pc_relative */
1088 complain_overflow_dont
,/* complain_on_overflow */
1089 bfd_elf_generic_reloc
, /* special_function */
1090 "R_ARM_ALU_SB_G0", /* name */
1091 FALSE
, /* partial_inplace */
1092 0xffffffff, /* src_mask */
1093 0xffffffff, /* dst_mask */
1094 TRUE
), /* pcrel_offset */
1096 HOWTO (R_ARM_ALU_SB_G1_NC
, /* type */
1098 2, /* size (0 = byte, 1 = short, 2 = long) */
1100 TRUE
, /* pc_relative */
1102 complain_overflow_dont
,/* complain_on_overflow */
1103 bfd_elf_generic_reloc
, /* special_function */
1104 "R_ARM_ALU_SB_G1_NC", /* name */
1105 FALSE
, /* partial_inplace */
1106 0xffffffff, /* src_mask */
1107 0xffffffff, /* dst_mask */
1108 TRUE
), /* pcrel_offset */
1110 HOWTO (R_ARM_ALU_SB_G1
, /* type */
1112 2, /* size (0 = byte, 1 = short, 2 = long) */
1114 TRUE
, /* pc_relative */
1116 complain_overflow_dont
,/* complain_on_overflow */
1117 bfd_elf_generic_reloc
, /* special_function */
1118 "R_ARM_ALU_SB_G1", /* name */
1119 FALSE
, /* partial_inplace */
1120 0xffffffff, /* src_mask */
1121 0xffffffff, /* dst_mask */
1122 TRUE
), /* pcrel_offset */
1124 HOWTO (R_ARM_ALU_SB_G2
, /* type */
1126 2, /* size (0 = byte, 1 = short, 2 = long) */
1128 TRUE
, /* pc_relative */
1130 complain_overflow_dont
,/* complain_on_overflow */
1131 bfd_elf_generic_reloc
, /* special_function */
1132 "R_ARM_ALU_SB_G2", /* name */
1133 FALSE
, /* partial_inplace */
1134 0xffffffff, /* src_mask */
1135 0xffffffff, /* dst_mask */
1136 TRUE
), /* pcrel_offset */
1138 HOWTO (R_ARM_LDR_SB_G0
, /* type */
1140 2, /* size (0 = byte, 1 = short, 2 = long) */
1142 TRUE
, /* pc_relative */
1144 complain_overflow_dont
,/* complain_on_overflow */
1145 bfd_elf_generic_reloc
, /* special_function */
1146 "R_ARM_LDR_SB_G0", /* name */
1147 FALSE
, /* partial_inplace */
1148 0xffffffff, /* src_mask */
1149 0xffffffff, /* dst_mask */
1150 TRUE
), /* pcrel_offset */
1152 HOWTO (R_ARM_LDR_SB_G1
, /* type */
1154 2, /* size (0 = byte, 1 = short, 2 = long) */
1156 TRUE
, /* pc_relative */
1158 complain_overflow_dont
,/* complain_on_overflow */
1159 bfd_elf_generic_reloc
, /* special_function */
1160 "R_ARM_LDR_SB_G1", /* name */
1161 FALSE
, /* partial_inplace */
1162 0xffffffff, /* src_mask */
1163 0xffffffff, /* dst_mask */
1164 TRUE
), /* pcrel_offset */
1166 HOWTO (R_ARM_LDR_SB_G2
, /* type */
1168 2, /* size (0 = byte, 1 = short, 2 = long) */
1170 TRUE
, /* pc_relative */
1172 complain_overflow_dont
,/* complain_on_overflow */
1173 bfd_elf_generic_reloc
, /* special_function */
1174 "R_ARM_LDR_SB_G2", /* name */
1175 FALSE
, /* partial_inplace */
1176 0xffffffff, /* src_mask */
1177 0xffffffff, /* dst_mask */
1178 TRUE
), /* pcrel_offset */
1180 HOWTO (R_ARM_LDRS_SB_G0
, /* type */
1182 2, /* size (0 = byte, 1 = short, 2 = long) */
1184 TRUE
, /* pc_relative */
1186 complain_overflow_dont
,/* complain_on_overflow */
1187 bfd_elf_generic_reloc
, /* special_function */
1188 "R_ARM_LDRS_SB_G0", /* name */
1189 FALSE
, /* partial_inplace */
1190 0xffffffff, /* src_mask */
1191 0xffffffff, /* dst_mask */
1192 TRUE
), /* pcrel_offset */
1194 HOWTO (R_ARM_LDRS_SB_G1
, /* type */
1196 2, /* size (0 = byte, 1 = short, 2 = long) */
1198 TRUE
, /* pc_relative */
1200 complain_overflow_dont
,/* complain_on_overflow */
1201 bfd_elf_generic_reloc
, /* special_function */
1202 "R_ARM_LDRS_SB_G1", /* name */
1203 FALSE
, /* partial_inplace */
1204 0xffffffff, /* src_mask */
1205 0xffffffff, /* dst_mask */
1206 TRUE
), /* pcrel_offset */
1208 HOWTO (R_ARM_LDRS_SB_G2
, /* type */
1210 2, /* size (0 = byte, 1 = short, 2 = long) */
1212 TRUE
, /* pc_relative */
1214 complain_overflow_dont
,/* complain_on_overflow */
1215 bfd_elf_generic_reloc
, /* special_function */
1216 "R_ARM_LDRS_SB_G2", /* name */
1217 FALSE
, /* partial_inplace */
1218 0xffffffff, /* src_mask */
1219 0xffffffff, /* dst_mask */
1220 TRUE
), /* pcrel_offset */
1222 HOWTO (R_ARM_LDC_SB_G0
, /* type */
1224 2, /* size (0 = byte, 1 = short, 2 = long) */
1226 TRUE
, /* pc_relative */
1228 complain_overflow_dont
,/* complain_on_overflow */
1229 bfd_elf_generic_reloc
, /* special_function */
1230 "R_ARM_LDC_SB_G0", /* name */
1231 FALSE
, /* partial_inplace */
1232 0xffffffff, /* src_mask */
1233 0xffffffff, /* dst_mask */
1234 TRUE
), /* pcrel_offset */
1236 HOWTO (R_ARM_LDC_SB_G1
, /* type */
1238 2, /* size (0 = byte, 1 = short, 2 = long) */
1240 TRUE
, /* pc_relative */
1242 complain_overflow_dont
,/* complain_on_overflow */
1243 bfd_elf_generic_reloc
, /* special_function */
1244 "R_ARM_LDC_SB_G1", /* name */
1245 FALSE
, /* partial_inplace */
1246 0xffffffff, /* src_mask */
1247 0xffffffff, /* dst_mask */
1248 TRUE
), /* pcrel_offset */
1250 HOWTO (R_ARM_LDC_SB_G2
, /* type */
1252 2, /* size (0 = byte, 1 = short, 2 = long) */
1254 TRUE
, /* pc_relative */
1256 complain_overflow_dont
,/* complain_on_overflow */
1257 bfd_elf_generic_reloc
, /* special_function */
1258 "R_ARM_LDC_SB_G2", /* name */
1259 FALSE
, /* partial_inplace */
1260 0xffffffff, /* src_mask */
1261 0xffffffff, /* dst_mask */
1262 TRUE
), /* pcrel_offset */
1264 /* End of group relocations. */
1266 HOWTO (R_ARM_MOVW_BREL_NC
, /* type */
1268 2, /* size (0 = byte, 1 = short, 2 = long) */
1270 FALSE
, /* pc_relative */
1272 complain_overflow_dont
,/* complain_on_overflow */
1273 bfd_elf_generic_reloc
, /* special_function */
1274 "R_ARM_MOVW_BREL_NC", /* name */
1275 FALSE
, /* partial_inplace */
1276 0x0000ffff, /* src_mask */
1277 0x0000ffff, /* dst_mask */
1278 FALSE
), /* pcrel_offset */
1280 HOWTO (R_ARM_MOVT_BREL
, /* type */
1282 2, /* size (0 = byte, 1 = short, 2 = long) */
1284 FALSE
, /* pc_relative */
1286 complain_overflow_bitfield
,/* complain_on_overflow */
1287 bfd_elf_generic_reloc
, /* special_function */
1288 "R_ARM_MOVT_BREL", /* name */
1289 FALSE
, /* partial_inplace */
1290 0x0000ffff, /* src_mask */
1291 0x0000ffff, /* dst_mask */
1292 FALSE
), /* pcrel_offset */
1294 HOWTO (R_ARM_MOVW_BREL
, /* type */
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1298 FALSE
, /* pc_relative */
1300 complain_overflow_dont
,/* complain_on_overflow */
1301 bfd_elf_generic_reloc
, /* special_function */
1302 "R_ARM_MOVW_BREL", /* name */
1303 FALSE
, /* partial_inplace */
1304 0x0000ffff, /* src_mask */
1305 0x0000ffff, /* dst_mask */
1306 FALSE
), /* pcrel_offset */
1308 HOWTO (R_ARM_THM_MOVW_BREL_NC
,/* type */
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1312 FALSE
, /* pc_relative */
1314 complain_overflow_dont
,/* complain_on_overflow */
1315 bfd_elf_generic_reloc
, /* special_function */
1316 "R_ARM_THM_MOVW_BREL_NC",/* name */
1317 FALSE
, /* partial_inplace */
1318 0x040f70ff, /* src_mask */
1319 0x040f70ff, /* dst_mask */
1320 FALSE
), /* pcrel_offset */
1322 HOWTO (R_ARM_THM_MOVT_BREL
, /* type */
1324 2, /* size (0 = byte, 1 = short, 2 = long) */
1326 FALSE
, /* pc_relative */
1328 complain_overflow_bitfield
,/* complain_on_overflow */
1329 bfd_elf_generic_reloc
, /* special_function */
1330 "R_ARM_THM_MOVT_BREL", /* name */
1331 FALSE
, /* partial_inplace */
1332 0x040f70ff, /* src_mask */
1333 0x040f70ff, /* dst_mask */
1334 FALSE
), /* pcrel_offset */
1336 HOWTO (R_ARM_THM_MOVW_BREL
, /* type */
1338 2, /* size (0 = byte, 1 = short, 2 = long) */
1340 FALSE
, /* pc_relative */
1342 complain_overflow_dont
,/* complain_on_overflow */
1343 bfd_elf_generic_reloc
, /* special_function */
1344 "R_ARM_THM_MOVW_BREL", /* name */
1345 FALSE
, /* partial_inplace */
1346 0x040f70ff, /* src_mask */
1347 0x040f70ff, /* dst_mask */
1348 FALSE
), /* pcrel_offset */
1350 EMPTY_HOWTO (90), /* Unallocated. */
1355 HOWTO (R_ARM_PLT32_ABS
, /* type */
1357 2, /* size (0 = byte, 1 = short, 2 = long) */
1359 FALSE
, /* pc_relative */
1361 complain_overflow_dont
,/* complain_on_overflow */
1362 bfd_elf_generic_reloc
, /* special_function */
1363 "R_ARM_PLT32_ABS", /* name */
1364 FALSE
, /* partial_inplace */
1365 0xffffffff, /* src_mask */
1366 0xffffffff, /* dst_mask */
1367 FALSE
), /* pcrel_offset */
1369 HOWTO (R_ARM_GOT_ABS
, /* type */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1373 FALSE
, /* pc_relative */
1375 complain_overflow_dont
,/* complain_on_overflow */
1376 bfd_elf_generic_reloc
, /* special_function */
1377 "R_ARM_GOT_ABS", /* name */
1378 FALSE
, /* partial_inplace */
1379 0xffffffff, /* src_mask */
1380 0xffffffff, /* dst_mask */
1381 FALSE
), /* pcrel_offset */
1383 HOWTO (R_ARM_GOT_PREL
, /* type */
1385 2, /* size (0 = byte, 1 = short, 2 = long) */
1387 TRUE
, /* pc_relative */
1389 complain_overflow_dont
, /* complain_on_overflow */
1390 bfd_elf_generic_reloc
, /* special_function */
1391 "R_ARM_GOT_PREL", /* name */
1392 FALSE
, /* partial_inplace */
1393 0xffffffff, /* src_mask */
1394 0xffffffff, /* dst_mask */
1395 TRUE
), /* pcrel_offset */
1397 HOWTO (R_ARM_GOT_BREL12
, /* type */
1399 2, /* size (0 = byte, 1 = short, 2 = long) */
1401 FALSE
, /* pc_relative */
1403 complain_overflow_bitfield
,/* complain_on_overflow */
1404 bfd_elf_generic_reloc
, /* special_function */
1405 "R_ARM_GOT_BREL12", /* name */
1406 FALSE
, /* partial_inplace */
1407 0x00000fff, /* src_mask */
1408 0x00000fff, /* dst_mask */
1409 FALSE
), /* pcrel_offset */
1411 HOWTO (R_ARM_GOTOFF12
, /* type */
1413 2, /* size (0 = byte, 1 = short, 2 = long) */
1415 FALSE
, /* pc_relative */
1417 complain_overflow_bitfield
,/* complain_on_overflow */
1418 bfd_elf_generic_reloc
, /* special_function */
1419 "R_ARM_GOTOFF12", /* name */
1420 FALSE
, /* partial_inplace */
1421 0x00000fff, /* src_mask */
1422 0x00000fff, /* dst_mask */
1423 FALSE
), /* pcrel_offset */
1425 EMPTY_HOWTO (R_ARM_GOTRELAX
), /* reserved for future GOT-load optimizations */
1427 /* GNU extension to record C++ vtable member usage */
1428 HOWTO (R_ARM_GNU_VTENTRY
, /* type */
1430 2, /* size (0 = byte, 1 = short, 2 = long) */
1432 FALSE
, /* pc_relative */
1434 complain_overflow_dont
, /* complain_on_overflow */
1435 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
1436 "R_ARM_GNU_VTENTRY", /* name */
1437 FALSE
, /* partial_inplace */
1440 FALSE
), /* pcrel_offset */
1442 /* GNU extension to record C++ vtable hierarchy */
1443 HOWTO (R_ARM_GNU_VTINHERIT
, /* type */
1445 2, /* size (0 = byte, 1 = short, 2 = long) */
1447 FALSE
, /* pc_relative */
1449 complain_overflow_dont
, /* complain_on_overflow */
1450 NULL
, /* special_function */
1451 "R_ARM_GNU_VTINHERIT", /* name */
1452 FALSE
, /* partial_inplace */
1455 FALSE
), /* pcrel_offset */
1457 HOWTO (R_ARM_THM_JUMP11
, /* type */
1459 1, /* size (0 = byte, 1 = short, 2 = long) */
1461 TRUE
, /* pc_relative */
1463 complain_overflow_signed
, /* complain_on_overflow */
1464 bfd_elf_generic_reloc
, /* special_function */
1465 "R_ARM_THM_JUMP11", /* name */
1466 FALSE
, /* partial_inplace */
1467 0x000007ff, /* src_mask */
1468 0x000007ff, /* dst_mask */
1469 TRUE
), /* pcrel_offset */
1471 HOWTO (R_ARM_THM_JUMP8
, /* type */
1473 1, /* size (0 = byte, 1 = short, 2 = long) */
1475 TRUE
, /* pc_relative */
1477 complain_overflow_signed
, /* complain_on_overflow */
1478 bfd_elf_generic_reloc
, /* special_function */
1479 "R_ARM_THM_JUMP8", /* name */
1480 FALSE
, /* partial_inplace */
1481 0x000000ff, /* src_mask */
1482 0x000000ff, /* dst_mask */
1483 TRUE
), /* pcrel_offset */
1485 /* TLS relocations */
1486 HOWTO (R_ARM_TLS_GD32
, /* type */
1488 2, /* size (0 = byte, 1 = short, 2 = long) */
1490 FALSE
, /* pc_relative */
1492 complain_overflow_bitfield
,/* complain_on_overflow */
1493 NULL
, /* special_function */
1494 "R_ARM_TLS_GD32", /* name */
1495 TRUE
, /* partial_inplace */
1496 0xffffffff, /* src_mask */
1497 0xffffffff, /* dst_mask */
1498 FALSE
), /* pcrel_offset */
1500 HOWTO (R_ARM_TLS_LDM32
, /* type */
1502 2, /* size (0 = byte, 1 = short, 2 = long) */
1504 FALSE
, /* pc_relative */
1506 complain_overflow_bitfield
,/* complain_on_overflow */
1507 bfd_elf_generic_reloc
, /* special_function */
1508 "R_ARM_TLS_LDM32", /* name */
1509 TRUE
, /* partial_inplace */
1510 0xffffffff, /* src_mask */
1511 0xffffffff, /* dst_mask */
1512 FALSE
), /* pcrel_offset */
1514 HOWTO (R_ARM_TLS_LDO32
, /* type */
1516 2, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE
, /* pc_relative */
1520 complain_overflow_bitfield
,/* complain_on_overflow */
1521 bfd_elf_generic_reloc
, /* special_function */
1522 "R_ARM_TLS_LDO32", /* name */
1523 TRUE
, /* partial_inplace */
1524 0xffffffff, /* src_mask */
1525 0xffffffff, /* dst_mask */
1526 FALSE
), /* pcrel_offset */
1528 HOWTO (R_ARM_TLS_IE32
, /* type */
1530 2, /* size (0 = byte, 1 = short, 2 = long) */
1532 FALSE
, /* pc_relative */
1534 complain_overflow_bitfield
,/* complain_on_overflow */
1535 NULL
, /* special_function */
1536 "R_ARM_TLS_IE32", /* name */
1537 TRUE
, /* partial_inplace */
1538 0xffffffff, /* src_mask */
1539 0xffffffff, /* dst_mask */
1540 FALSE
), /* pcrel_offset */
1542 HOWTO (R_ARM_TLS_LE32
, /* type */
1544 2, /* size (0 = byte, 1 = short, 2 = long) */
1546 FALSE
, /* pc_relative */
1548 complain_overflow_bitfield
,/* complain_on_overflow */
1549 bfd_elf_generic_reloc
, /* special_function */
1550 "R_ARM_TLS_LE32", /* name */
1551 TRUE
, /* partial_inplace */
1552 0xffffffff, /* src_mask */
1553 0xffffffff, /* dst_mask */
1554 FALSE
), /* pcrel_offset */
1556 HOWTO (R_ARM_TLS_LDO12
, /* type */
1558 2, /* size (0 = byte, 1 = short, 2 = long) */
1560 FALSE
, /* pc_relative */
1562 complain_overflow_bitfield
,/* complain_on_overflow */
1563 bfd_elf_generic_reloc
, /* special_function */
1564 "R_ARM_TLS_LDO12", /* name */
1565 FALSE
, /* partial_inplace */
1566 0x00000fff, /* src_mask */
1567 0x00000fff, /* dst_mask */
1568 FALSE
), /* pcrel_offset */
1570 HOWTO (R_ARM_TLS_LE12
, /* type */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1574 FALSE
, /* pc_relative */
1576 complain_overflow_bitfield
,/* complain_on_overflow */
1577 bfd_elf_generic_reloc
, /* special_function */
1578 "R_ARM_TLS_LE12", /* name */
1579 FALSE
, /* partial_inplace */
1580 0x00000fff, /* src_mask */
1581 0x00000fff, /* dst_mask */
1582 FALSE
), /* pcrel_offset */
1584 HOWTO (R_ARM_TLS_IE12GP
, /* type */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 FALSE
, /* pc_relative */
1590 complain_overflow_bitfield
,/* complain_on_overflow */
1591 bfd_elf_generic_reloc
, /* special_function */
1592 "R_ARM_TLS_IE12GP", /* name */
1593 FALSE
, /* partial_inplace */
1594 0x00000fff, /* src_mask */
1595 0x00000fff, /* dst_mask */
1596 FALSE
), /* pcrel_offset */
1599 /* 112-127 private relocations
1600 128 R_ARM_ME_TOO, obsolete
1601 129-255 unallocated in AAELF.
1603 249-255 extended, currently unused, relocations: */
1605 static reloc_howto_type elf32_arm_howto_table_2
[4] =
1607 HOWTO (R_ARM_RREL32
, /* type */
1609 0, /* size (0 = byte, 1 = short, 2 = long) */
1611 FALSE
, /* pc_relative */
1613 complain_overflow_dont
,/* complain_on_overflow */
1614 bfd_elf_generic_reloc
, /* special_function */
1615 "R_ARM_RREL32", /* name */
1616 FALSE
, /* partial_inplace */
1619 FALSE
), /* pcrel_offset */
1621 HOWTO (R_ARM_RABS32
, /* type */
1623 0, /* size (0 = byte, 1 = short, 2 = long) */
1625 FALSE
, /* pc_relative */
1627 complain_overflow_dont
,/* complain_on_overflow */
1628 bfd_elf_generic_reloc
, /* special_function */
1629 "R_ARM_RABS32", /* name */
1630 FALSE
, /* partial_inplace */
1633 FALSE
), /* pcrel_offset */
1635 HOWTO (R_ARM_RPC24
, /* type */
1637 0, /* size (0 = byte, 1 = short, 2 = long) */
1639 FALSE
, /* pc_relative */
1641 complain_overflow_dont
,/* complain_on_overflow */
1642 bfd_elf_generic_reloc
, /* special_function */
1643 "R_ARM_RPC24", /* name */
1644 FALSE
, /* partial_inplace */
1647 FALSE
), /* pcrel_offset */
1649 HOWTO (R_ARM_RBASE
, /* type */
1651 0, /* size (0 = byte, 1 = short, 2 = long) */
1653 FALSE
, /* pc_relative */
1655 complain_overflow_dont
,/* complain_on_overflow */
1656 bfd_elf_generic_reloc
, /* special_function */
1657 "R_ARM_RBASE", /* name */
1658 FALSE
, /* partial_inplace */
1661 FALSE
) /* pcrel_offset */
1664 static reloc_howto_type
*
1665 elf32_arm_howto_from_type (unsigned int r_type
)
1667 if (r_type
< ARRAY_SIZE (elf32_arm_howto_table_1
))
1668 return &elf32_arm_howto_table_1
[r_type
];
1670 if (r_type
>= R_ARM_RREL32
1671 && r_type
< R_ARM_RREL32
+ ARRAY_SIZE (elf32_arm_howto_table_2
))
1672 return &elf32_arm_howto_table_2
[r_type
- R_ARM_RREL32
];
1678 elf32_arm_info_to_howto (bfd
* abfd ATTRIBUTE_UNUSED
, arelent
* bfd_reloc
,
1679 Elf_Internal_Rela
* elf_reloc
)
1681 unsigned int r_type
;
1683 r_type
= ELF32_R_TYPE (elf_reloc
->r_info
);
1684 bfd_reloc
->howto
= elf32_arm_howto_from_type (r_type
);
1687 struct elf32_arm_reloc_map
1689 bfd_reloc_code_real_type bfd_reloc_val
;
1690 unsigned char elf_reloc_val
;
1693 /* All entries in this list must also be present in elf32_arm_howto_table. */
1694 static const struct elf32_arm_reloc_map elf32_arm_reloc_map
[] =
1696 {BFD_RELOC_NONE
, R_ARM_NONE
},
1697 {BFD_RELOC_ARM_PCREL_BRANCH
, R_ARM_PC24
},
1698 {BFD_RELOC_ARM_PCREL_CALL
, R_ARM_CALL
},
1699 {BFD_RELOC_ARM_PCREL_JUMP
, R_ARM_JUMP24
},
1700 {BFD_RELOC_ARM_PCREL_BLX
, R_ARM_XPC25
},
1701 {BFD_RELOC_THUMB_PCREL_BLX
, R_ARM_THM_XPC22
},
1702 {BFD_RELOC_32
, R_ARM_ABS32
},
1703 {BFD_RELOC_32_PCREL
, R_ARM_REL32
},
1704 {BFD_RELOC_8
, R_ARM_ABS8
},
1705 {BFD_RELOC_16
, R_ARM_ABS16
},
1706 {BFD_RELOC_ARM_OFFSET_IMM
, R_ARM_ABS12
},
1707 {BFD_RELOC_ARM_THUMB_OFFSET
, R_ARM_THM_ABS5
},
1708 {BFD_RELOC_THUMB_PCREL_BRANCH25
, R_ARM_THM_JUMP24
},
1709 {BFD_RELOC_THUMB_PCREL_BRANCH23
, R_ARM_THM_CALL
},
1710 {BFD_RELOC_THUMB_PCREL_BRANCH12
, R_ARM_THM_JUMP11
},
1711 {BFD_RELOC_THUMB_PCREL_BRANCH20
, R_ARM_THM_JUMP19
},
1712 {BFD_RELOC_THUMB_PCREL_BRANCH9
, R_ARM_THM_JUMP8
},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH7
, R_ARM_THM_JUMP6
},
1714 {BFD_RELOC_ARM_GLOB_DAT
, R_ARM_GLOB_DAT
},
1715 {BFD_RELOC_ARM_JUMP_SLOT
, R_ARM_JUMP_SLOT
},
1716 {BFD_RELOC_ARM_RELATIVE
, R_ARM_RELATIVE
},
1717 {BFD_RELOC_ARM_GOTOFF
, R_ARM_GOTOFF32
},
1718 {BFD_RELOC_ARM_GOTPC
, R_ARM_GOTPC
},
1719 {BFD_RELOC_ARM_GOT32
, R_ARM_GOT32
},
1720 {BFD_RELOC_ARM_PLT32
, R_ARM_PLT32
},
1721 {BFD_RELOC_ARM_TARGET1
, R_ARM_TARGET1
},
1722 {BFD_RELOC_ARM_ROSEGREL32
, R_ARM_ROSEGREL32
},
1723 {BFD_RELOC_ARM_SBREL32
, R_ARM_SBREL32
},
1724 {BFD_RELOC_ARM_PREL31
, R_ARM_PREL31
},
1725 {BFD_RELOC_ARM_TARGET2
, R_ARM_TARGET2
},
1726 {BFD_RELOC_ARM_PLT32
, R_ARM_PLT32
},
1727 {BFD_RELOC_ARM_TLS_GD32
, R_ARM_TLS_GD32
},
1728 {BFD_RELOC_ARM_TLS_LDO32
, R_ARM_TLS_LDO32
},
1729 {BFD_RELOC_ARM_TLS_LDM32
, R_ARM_TLS_LDM32
},
1730 {BFD_RELOC_ARM_TLS_DTPMOD32
, R_ARM_TLS_DTPMOD32
},
1731 {BFD_RELOC_ARM_TLS_DTPOFF32
, R_ARM_TLS_DTPOFF32
},
1732 {BFD_RELOC_ARM_TLS_TPOFF32
, R_ARM_TLS_TPOFF32
},
1733 {BFD_RELOC_ARM_TLS_IE32
, R_ARM_TLS_IE32
},
1734 {BFD_RELOC_ARM_TLS_LE32
, R_ARM_TLS_LE32
},
1735 {BFD_RELOC_VTABLE_INHERIT
, R_ARM_GNU_VTINHERIT
},
1736 {BFD_RELOC_VTABLE_ENTRY
, R_ARM_GNU_VTENTRY
},
1737 {BFD_RELOC_ARM_MOVW
, R_ARM_MOVW_ABS_NC
},
1738 {BFD_RELOC_ARM_MOVT
, R_ARM_MOVT_ABS
},
1739 {BFD_RELOC_ARM_MOVW_PCREL
, R_ARM_MOVW_PREL_NC
},
1740 {BFD_RELOC_ARM_MOVT_PCREL
, R_ARM_MOVT_PREL
},
1741 {BFD_RELOC_ARM_THUMB_MOVW
, R_ARM_THM_MOVW_ABS_NC
},
1742 {BFD_RELOC_ARM_THUMB_MOVT
, R_ARM_THM_MOVT_ABS
},
1743 {BFD_RELOC_ARM_THUMB_MOVW_PCREL
, R_ARM_THM_MOVW_PREL_NC
},
1744 {BFD_RELOC_ARM_THUMB_MOVT_PCREL
, R_ARM_THM_MOVT_PREL
},
1745 {BFD_RELOC_ARM_ALU_PC_G0_NC
, R_ARM_ALU_PC_G0_NC
},
1746 {BFD_RELOC_ARM_ALU_PC_G0
, R_ARM_ALU_PC_G0
},
1747 {BFD_RELOC_ARM_ALU_PC_G1_NC
, R_ARM_ALU_PC_G1_NC
},
1748 {BFD_RELOC_ARM_ALU_PC_G1
, R_ARM_ALU_PC_G1
},
1749 {BFD_RELOC_ARM_ALU_PC_G2
, R_ARM_ALU_PC_G2
},
1750 {BFD_RELOC_ARM_LDR_PC_G0
, R_ARM_LDR_PC_G0
},
1751 {BFD_RELOC_ARM_LDR_PC_G1
, R_ARM_LDR_PC_G1
},
1752 {BFD_RELOC_ARM_LDR_PC_G2
, R_ARM_LDR_PC_G2
},
1753 {BFD_RELOC_ARM_LDRS_PC_G0
, R_ARM_LDRS_PC_G0
},
1754 {BFD_RELOC_ARM_LDRS_PC_G1
, R_ARM_LDRS_PC_G1
},
1755 {BFD_RELOC_ARM_LDRS_PC_G2
, R_ARM_LDRS_PC_G2
},
1756 {BFD_RELOC_ARM_LDC_PC_G0
, R_ARM_LDC_PC_G0
},
1757 {BFD_RELOC_ARM_LDC_PC_G1
, R_ARM_LDC_PC_G1
},
1758 {BFD_RELOC_ARM_LDC_PC_G2
, R_ARM_LDC_PC_G2
},
1759 {BFD_RELOC_ARM_ALU_SB_G0_NC
, R_ARM_ALU_SB_G0_NC
},
1760 {BFD_RELOC_ARM_ALU_SB_G0
, R_ARM_ALU_SB_G0
},
1761 {BFD_RELOC_ARM_ALU_SB_G1_NC
, R_ARM_ALU_SB_G1_NC
},
1762 {BFD_RELOC_ARM_ALU_SB_G1
, R_ARM_ALU_SB_G1
},
1763 {BFD_RELOC_ARM_ALU_SB_G2
, R_ARM_ALU_SB_G2
},
1764 {BFD_RELOC_ARM_LDR_SB_G0
, R_ARM_LDR_SB_G0
},
1765 {BFD_RELOC_ARM_LDR_SB_G1
, R_ARM_LDR_SB_G1
},
1766 {BFD_RELOC_ARM_LDR_SB_G2
, R_ARM_LDR_SB_G2
},
1767 {BFD_RELOC_ARM_LDRS_SB_G0
, R_ARM_LDRS_SB_G0
},
1768 {BFD_RELOC_ARM_LDRS_SB_G1
, R_ARM_LDRS_SB_G1
},
1769 {BFD_RELOC_ARM_LDRS_SB_G2
, R_ARM_LDRS_SB_G2
},
1770 {BFD_RELOC_ARM_LDC_SB_G0
, R_ARM_LDC_SB_G0
},
1771 {BFD_RELOC_ARM_LDC_SB_G1
, R_ARM_LDC_SB_G1
},
1772 {BFD_RELOC_ARM_LDC_SB_G2
, R_ARM_LDC_SB_G2
},
1773 {BFD_RELOC_ARM_V4BX
, R_ARM_V4BX
}
1776 static reloc_howto_type
*
1777 elf32_arm_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1778 bfd_reloc_code_real_type code
)
1782 for (i
= 0; i
< ARRAY_SIZE (elf32_arm_reloc_map
); i
++)
1783 if (elf32_arm_reloc_map
[i
].bfd_reloc_val
== code
)
1784 return elf32_arm_howto_from_type (elf32_arm_reloc_map
[i
].elf_reloc_val
);
1789 static reloc_howto_type
*
1790 elf32_arm_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1795 for (i
= 0; i
< ARRAY_SIZE (elf32_arm_howto_table_1
); i
++)
1796 if (elf32_arm_howto_table_1
[i
].name
!= NULL
1797 && strcasecmp (elf32_arm_howto_table_1
[i
].name
, r_name
) == 0)
1798 return &elf32_arm_howto_table_1
[i
];
1800 for (i
= 0; i
< ARRAY_SIZE (elf32_arm_howto_table_2
); i
++)
1801 if (elf32_arm_howto_table_2
[i
].name
!= NULL
1802 && strcasecmp (elf32_arm_howto_table_2
[i
].name
, r_name
) == 0)
1803 return &elf32_arm_howto_table_2
[i
];
1808 /* Support for core dump NOTE sections. */
1811 elf32_arm_nabi_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
1816 switch (note
->descsz
)
1821 case 148: /* Linux/ARM 32-bit. */
1823 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
1826 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
1835 /* Make a ".reg/999" section. */
1836 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
1837 size
, note
->descpos
+ offset
);
1841 elf32_arm_nabi_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
1843 switch (note
->descsz
)
1848 case 124: /* Linux/ARM elf_prpsinfo. */
1849 elf_tdata (abfd
)->core_program
1850 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
1851 elf_tdata (abfd
)->core_command
1852 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
1855 /* Note that for some reason, a spurious space is tacked
1856 onto the end of the args in some (at least one anyway)
1857 implementations, so strip it off if it exists. */
1859 char *command
= elf_tdata (abfd
)->core_command
;
1860 int n
= strlen (command
);
1862 if (0 < n
&& command
[n
- 1] == ' ')
1863 command
[n
- 1] = '\0';
1869 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1870 #define TARGET_LITTLE_NAME "elf32-littlearm"
1871 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1872 #define TARGET_BIG_NAME "elf32-bigarm"
1874 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1875 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1877 typedef unsigned long int insn32
;
1878 typedef unsigned short int insn16
;
1880 /* In lieu of proper flags, assume all EABIv4 or later objects are
1882 #define INTERWORK_FLAG(abfd) \
1883 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1884 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1886 /* The linker script knows the section names for placement.
1887 The entry_names are used to do simple name mangling on the stubs.
1888 Given a function name, and its type, the stub can be found. The
1889 name can be changed. The only requirement is the %s be present. */
1890 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1891 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1893 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1894 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1896 #define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1897 #define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1899 #define ARM_BX_GLUE_SECTION_NAME ".v4_bx"
1900 #define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d"
1902 #define STUB_ENTRY_NAME "__%s_veneer"
1904 /* The name of the dynamic interpreter. This is put in the .interp
1906 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1908 #ifdef FOUR_WORD_PLT
1910 /* The first entry in a procedure linkage table looks like
1911 this. It is set up so that any shared library function that is
1912 called before the relocation has been set up calls the dynamic
1914 static const bfd_vma elf32_arm_plt0_entry
[] =
1916 0xe52de004, /* str lr, [sp, #-4]! */
1917 0xe59fe010, /* ldr lr, [pc, #16] */
1918 0xe08fe00e, /* add lr, pc, lr */
1919 0xe5bef008, /* ldr pc, [lr, #8]! */
1922 /* Subsequent entries in a procedure linkage table look like
1924 static const bfd_vma elf32_arm_plt_entry
[] =
1926 0xe28fc600, /* add ip, pc, #NN */
1927 0xe28cca00, /* add ip, ip, #NN */
1928 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1929 0x00000000, /* unused */
1934 /* The first entry in a procedure linkage table looks like
1935 this. It is set up so that any shared library function that is
1936 called before the relocation has been set up calls the dynamic
1938 static const bfd_vma elf32_arm_plt0_entry
[] =
1940 0xe52de004, /* str lr, [sp, #-4]! */
1941 0xe59fe004, /* ldr lr, [pc, #4] */
1942 0xe08fe00e, /* add lr, pc, lr */
1943 0xe5bef008, /* ldr pc, [lr, #8]! */
1944 0x00000000, /* &GOT[0] - . */
1947 /* Subsequent entries in a procedure linkage table look like
1949 static const bfd_vma elf32_arm_plt_entry
[] =
1951 0xe28fc600, /* add ip, pc, #0xNN00000 */
1952 0xe28cca00, /* add ip, ip, #0xNN000 */
1953 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1958 /* The format of the first entry in the procedure linkage table
1959 for a VxWorks executable. */
1960 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry
[] =
1962 0xe52dc008, /* str ip,[sp,#-8]! */
1963 0xe59fc000, /* ldr ip,[pc] */
1964 0xe59cf008, /* ldr pc,[ip,#8] */
1965 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1968 /* The format of subsequent entries in a VxWorks executable. */
1969 static const bfd_vma elf32_arm_vxworks_exec_plt_entry
[] =
1971 0xe59fc000, /* ldr ip,[pc] */
1972 0xe59cf000, /* ldr pc,[ip] */
1973 0x00000000, /* .long @got */
1974 0xe59fc000, /* ldr ip,[pc] */
1975 0xea000000, /* b _PLT */
1976 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1979 /* The format of entries in a VxWorks shared library. */
1980 static const bfd_vma elf32_arm_vxworks_shared_plt_entry
[] =
1982 0xe59fc000, /* ldr ip,[pc] */
1983 0xe79cf009, /* ldr pc,[ip,r9] */
1984 0x00000000, /* .long @got */
1985 0xe59fc000, /* ldr ip,[pc] */
1986 0xe599f008, /* ldr pc,[r9,#8] */
1987 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1990 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1991 #define PLT_THUMB_STUB_SIZE 4
1992 static const bfd_vma elf32_arm_plt_thumb_stub
[] =
1998 /* The entries in a PLT when using a DLL-based target with multiple
2000 static const bfd_vma elf32_arm_symbian_plt_entry
[] =
2002 0xe51ff004, /* ldr pc, [pc, #-4] */
2003 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2006 #define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8)
2007 #define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8)
2008 #define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4)
2009 #define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4)
2010 #define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4)
2011 #define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4)
2021 enum stub_reloc_type
2023 STUB_RELOC_NONE
= 0,
2028 #define THUMB16_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 0}
2029 #define THUMB32_INSN(X) {(X), THUMB32_TYPE, R_ARM_NONE, 0}
2030 #define ARM_INSN(X) {(X), ARM_TYPE, R_ARM_NONE, 0}
2031 #define ARM_REL_INSN(X, Z) {(X), ARM_TYPE, R_ARM_JUMP24, (Z)}
2032 #define DATA_WORD(X,Y,Z) {(X), DATA_TYPE, (Y), (Z)}
2037 enum stub_insn_type type
;
2038 enum stub_reloc_type reloc_type
;
2042 /* Arm/Thumb -> Arm/Thumb long branch stub. On V5T and above, use blx
2043 to reach the stub if necessary. */
2044 static const insn_sequence elf32_arm_stub_long_branch_any_any
[] =
2046 ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */
2047 DATA_WORD(0, R_ARM_ABS32
, 0), /* dcd R_ARM_ABS32(X) */
2050 /* V4T Arm -> Thumb long branch stub. Used on V4T where blx is not
2052 static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb
[] =
2054 ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */
2055 ARM_INSN(0xe12fff1c), /* bx ip */
2056 DATA_WORD(0, R_ARM_ABS32
, 0), /* dcd R_ARM_ABS32(X) */
2059 /* Thumb -> Thumb long branch stub. Used on architectures which
2060 support only this mode, or on V4T where it is expensive to switch
2062 static const insn_sequence elf32_arm_stub_long_branch_thumb_only
[] =
2064 THUMB16_INSN(0xb401), /* push {r0} */
2065 THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */
2066 THUMB16_INSN(0x4684), /* mov ip, r0 */
2067 THUMB16_INSN(0xbc01), /* pop {r0} */
2068 THUMB16_INSN(0x4760), /* bx ip */
2069 THUMB16_INSN(0xbf00), /* nop */
2070 DATA_WORD(0, R_ARM_ABS32
, 0), /* dcd R_ARM_ABS32(X) */
2073 /* V4T Thumb -> ARM long branch stub. Used on V4T where blx is not
2075 static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm
[] =
2077 THUMB16_INSN(0x4778), /* bx pc */
2078 THUMB16_INSN(0x46c0), /* nop */
2079 ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */
2080 DATA_WORD(0, R_ARM_ABS32
, 0), /* dcd R_ARM_ABS32(X) */
2083 /* V4T Thumb -> ARM short branch stub. Shorter variant of the above
2084 one, when the destination is close enough. */
2085 static const insn_sequence elf32_arm_stub_short_branch_v4t_thumb_arm
[] =
2087 THUMB16_INSN(0x4778), /* bx pc */
2088 THUMB16_INSN(0x46c0), /* nop */
2089 ARM_REL_INSN(0xea000000, -8), /* b (X-8) */
2092 /* ARM/Thumb -> ARM long branch stub, PIC. On V5T and above, use
2093 blx to reach the stub if necessary. */
2094 static const insn_sequence elf32_arm_stub_long_branch_any_arm_pic
[] =
2096 ARM_INSN(0xe59fc000), /* ldr r12, [pc] */
2097 ARM_INSN(0xe08ff00c), /* add pc, pc, ip */
2098 DATA_WORD(0, R_ARM_REL32
, -4), /* dcd R_ARM_REL32(X-4) */
2101 /* ARM/Thumb -> Thumb long branch stub, PIC. On V5T and above, use
2102 blx to reach the stub if necessary. We can not add into pc;
2103 it is not guaranteed to mode switch (different in ARMv6 and
2105 static const insn_sequence elf32_arm_stub_long_branch_any_thumb_pic
[] =
2107 ARM_INSN(0xe59fc004), /* ldr r12, [pc, #4] */
2108 ARM_INSN(0xe08fc00c), /* add ip, pc, ip */
2109 ARM_INSN(0xe12fff1c), /* bx ip */
2110 DATA_WORD(0, R_ARM_REL32
, 0), /* dcd R_ARM_REL32(X) */
2113 /* Section name for stubs is the associated section name plus this
2115 #define STUB_SUFFIX ".stub"
2117 enum elf32_arm_stub_type
2120 arm_stub_long_branch_any_any
,
2121 arm_stub_long_branch_v4t_arm_thumb
,
2122 arm_stub_long_branch_thumb_only
,
2123 arm_stub_long_branch_v4t_thumb_arm
,
2124 arm_stub_short_branch_v4t_thumb_arm
,
2125 arm_stub_long_branch_any_arm_pic
,
2126 arm_stub_long_branch_any_thumb_pic
,
2129 struct elf32_arm_stub_hash_entry
2131 /* Base hash table entry structure. */
2132 struct bfd_hash_entry root
;
2134 /* The stub section. */
2137 /* Offset within stub_sec of the beginning of this stub. */
2138 bfd_vma stub_offset
;
2140 /* Given the symbol's value and its section we can determine its final
2141 value when building the stubs (so the stub knows where to jump). */
2142 bfd_vma target_value
;
2143 asection
*target_section
;
2145 /* The stub type. */
2146 enum elf32_arm_stub_type stub_type
;
2147 /* Its encoding size in bytes. */
2150 const insn_sequence
*stub_template
;
2151 /* The size of the template (number of entries). */
2152 int stub_template_size
;
2154 /* The symbol table entry, if any, that this was derived from. */
2155 struct elf32_arm_link_hash_entry
*h
;
2157 /* Destination symbol type (STT_ARM_TFUNC, ...) */
2158 unsigned char st_type
;
2160 /* Where this stub is being called from, or, in the case of combined
2161 stub sections, the first input section in the group. */
2164 /* The name for the local symbol at the start of this stub. The
2165 stub name in the hash table has to be unique; this does not, so
2166 it can be friendlier. */
2170 /* Used to build a map of a section. This is required for mixed-endian
2173 typedef struct elf32_elf_section_map
2178 elf32_arm_section_map
;
2180 /* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2184 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
,
2185 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
,
2186 VFP11_ERRATUM_ARM_VENEER
,
2187 VFP11_ERRATUM_THUMB_VENEER
2189 elf32_vfp11_erratum_type
;
2191 typedef struct elf32_vfp11_erratum_list
2193 struct elf32_vfp11_erratum_list
*next
;
2199 struct elf32_vfp11_erratum_list
*veneer
;
2200 unsigned int vfp_insn
;
2204 struct elf32_vfp11_erratum_list
*branch
;
2208 elf32_vfp11_erratum_type type
;
2210 elf32_vfp11_erratum_list
;
2212 typedef struct _arm_elf_section_data
2214 struct bfd_elf_section_data elf
;
2215 unsigned int mapcount
;
2216 unsigned int mapsize
;
2217 elf32_arm_section_map
*map
;
2218 unsigned int erratumcount
;
2219 elf32_vfp11_erratum_list
*erratumlist
;
2221 _arm_elf_section_data
;
2223 #define elf32_arm_section_data(sec) \
2224 ((_arm_elf_section_data *) elf_section_data (sec))
2226 /* The size of the thread control block. */
2229 struct elf_arm_obj_tdata
2231 struct elf_obj_tdata root
;
2233 /* tls_type for each local got entry. */
2234 char *local_got_tls_type
;
2236 /* Zero to warn when linking objects with incompatible enum sizes. */
2237 int no_enum_size_warning
;
2239 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2240 int no_wchar_size_warning
;
2243 #define elf_arm_tdata(bfd) \
2244 ((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
2246 #define elf32_arm_local_got_tls_type(bfd) \
2247 (elf_arm_tdata (bfd)->local_got_tls_type)
2249 #define is_arm_elf(bfd) \
2250 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2251 && elf_tdata (bfd) != NULL \
2252 && elf_object_id (bfd) == ARM_ELF_TDATA)
2255 elf32_arm_mkobject (bfd
*abfd
)
2257 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_arm_obj_tdata
),
2261 /* The ARM linker needs to keep track of the number of relocs that it
2262 decides to copy in check_relocs for each symbol. This is so that
2263 it can discard PC relative relocs if it doesn't need them when
2264 linking with -Bsymbolic. We store the information in a field
2265 extending the regular ELF linker hash table. */
2267 /* This structure keeps track of the number of relocs we have copied
2268 for a given symbol. */
2269 struct elf32_arm_relocs_copied
2272 struct elf32_arm_relocs_copied
* next
;
2273 /* A section in dynobj. */
2275 /* Number of relocs copied in this section. */
2276 bfd_size_type count
;
2277 /* Number of PC-relative relocs copied in this section. */
2278 bfd_size_type pc_count
;
2281 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2283 /* Arm ELF linker hash entry. */
2284 struct elf32_arm_link_hash_entry
2286 struct elf_link_hash_entry root
;
2288 /* Number of PC relative relocs copied for this symbol. */
2289 struct elf32_arm_relocs_copied
* relocs_copied
;
2291 /* We reference count Thumb references to a PLT entry separately,
2292 so that we can emit the Thumb trampoline only if needed. */
2293 bfd_signed_vma plt_thumb_refcount
;
2295 /* Some references from Thumb code may be eliminated by BL->BLX
2296 conversion, so record them separately. */
2297 bfd_signed_vma plt_maybe_thumb_refcount
;
2299 /* Since PLT entries have variable size if the Thumb prologue is
2300 used, we need to record the index into .got.plt instead of
2301 recomputing it from the PLT offset. */
2302 bfd_signed_vma plt_got_offset
;
2304 #define GOT_UNKNOWN 0
2305 #define GOT_NORMAL 1
2306 #define GOT_TLS_GD 2
2307 #define GOT_TLS_IE 4
2308 unsigned char tls_type
;
2310 /* The symbol marking the real symbol location for exported thumb
2311 symbols with Arm stubs. */
2312 struct elf_link_hash_entry
*export_glue
;
2314 /* A pointer to the most recently used stub hash entry against this
2316 struct elf32_arm_stub_hash_entry
*stub_cache
;
2319 /* Traverse an arm ELF linker hash table. */
2320 #define elf32_arm_link_hash_traverse(table, func, info) \
2321 (elf_link_hash_traverse \
2323 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2326 /* Get the ARM elf linker hash table from a link_info structure. */
2327 #define elf32_arm_hash_table(info) \
2328 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2330 #define arm_stub_hash_lookup(table, string, create, copy) \
2331 ((struct elf32_arm_stub_hash_entry *) \
2332 bfd_hash_lookup ((table), (string), (create), (copy)))
2334 /* ARM ELF linker hash table. */
2335 struct elf32_arm_link_hash_table
2337 /* The main hash table. */
2338 struct elf_link_hash_table root
;
2340 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2341 bfd_size_type thumb_glue_size
;
2343 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2344 bfd_size_type arm_glue_size
;
2346 /* The size in bytes of section containing the ARMv4 BX veneers. */
2347 bfd_size_type bx_glue_size
;
2349 /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when
2350 veneer has been populated. */
2351 bfd_vma bx_glue_offset
[15];
2353 /* The size in bytes of the section containing glue for VFP11 erratum
2355 bfd_size_type vfp11_erratum_glue_size
;
2357 /* An arbitrary input BFD chosen to hold the glue sections. */
2358 bfd
* bfd_of_glue_owner
;
2360 /* Nonzero to output a BE8 image. */
2363 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2364 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2367 /* The relocation to use for R_ARM_TARGET2 relocations. */
2370 /* 0 = Ignore R_ARM_V4BX.
2371 1 = Convert BX to MOV PC.
2372 2 = Generate v4 interworing stubs. */
2375 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2378 /* What sort of code sequences we should look for which may trigger the
2379 VFP11 denorm erratum. */
2380 bfd_arm_vfp11_fix vfp11_fix
;
2382 /* Global counter for the number of fixes we have emitted. */
2383 int num_vfp11_fixes
;
2385 /* Nonzero to force PIC branch veneers. */
2388 /* The number of bytes in the initial entry in the PLT. */
2389 bfd_size_type plt_header_size
;
2391 /* The number of bytes in the subsequent PLT etries. */
2392 bfd_size_type plt_entry_size
;
2394 /* True if the target system is VxWorks. */
2397 /* True if the target system is Symbian OS. */
2400 /* True if the target uses REL relocations. */
2403 /* Short-cuts to get to dynamic linker sections. */
2412 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2415 /* Data for R_ARM_TLS_LDM32 relocations. */
2418 bfd_signed_vma refcount
;
2422 /* Small local sym to section mapping cache. */
2423 struct sym_sec_cache sym_sec
;
2425 /* For convenience in allocate_dynrelocs. */
2428 /* The stub hash table. */
2429 struct bfd_hash_table stub_hash_table
;
2431 /* Linker stub bfd. */
2434 /* Linker call-backs. */
2435 asection
* (*add_stub_section
) (const char *, asection
*);
2436 void (*layout_sections_again
) (void);
2438 /* Array to keep track of which stub sections have been created, and
2439 information on stub grouping. */
2442 /* This is the section to which stubs in the group will be
2445 /* The stub section. */
2449 /* Assorted information used by elf32_arm_size_stubs. */
2450 unsigned int bfd_count
;
2452 asection
**input_list
;
2455 /* Create an entry in an ARM ELF linker hash table. */
2457 static struct bfd_hash_entry
*
2458 elf32_arm_link_hash_newfunc (struct bfd_hash_entry
* entry
,
2459 struct bfd_hash_table
* table
,
2460 const char * string
)
2462 struct elf32_arm_link_hash_entry
* ret
=
2463 (struct elf32_arm_link_hash_entry
*) entry
;
2465 /* Allocate the structure if it has not already been allocated by a
2468 ret
= bfd_hash_allocate (table
, sizeof (struct elf32_arm_link_hash_entry
));
2470 return (struct bfd_hash_entry
*) ret
;
2472 /* Call the allocation method of the superclass. */
2473 ret
= ((struct elf32_arm_link_hash_entry
*)
2474 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
2478 ret
->relocs_copied
= NULL
;
2479 ret
->tls_type
= GOT_UNKNOWN
;
2480 ret
->plt_thumb_refcount
= 0;
2481 ret
->plt_maybe_thumb_refcount
= 0;
2482 ret
->plt_got_offset
= -1;
2483 ret
->export_glue
= NULL
;
2485 ret
->stub_cache
= NULL
;
2488 return (struct bfd_hash_entry
*) ret
;
2491 /* Initialize an entry in the stub hash table. */
2493 static struct bfd_hash_entry
*
2494 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
2495 struct bfd_hash_table
*table
,
2498 /* Allocate the structure if it has not already been allocated by a
2502 entry
= bfd_hash_allocate (table
,
2503 sizeof (struct elf32_arm_stub_hash_entry
));
2508 /* Call the allocation method of the superclass. */
2509 entry
= bfd_hash_newfunc (entry
, table
, string
);
2512 struct elf32_arm_stub_hash_entry
*eh
;
2514 /* Initialize the local fields. */
2515 eh
= (struct elf32_arm_stub_hash_entry
*) entry
;
2516 eh
->stub_sec
= NULL
;
2517 eh
->stub_offset
= 0;
2518 eh
->target_value
= 0;
2519 eh
->target_section
= NULL
;
2520 eh
->stub_type
= arm_stub_none
;
2522 eh
->stub_template
= NULL
;
2523 eh
->stub_template_size
= 0;
2531 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2532 shortcuts to them in our hash table. */
2535 create_got_section (bfd
*dynobj
, struct bfd_link_info
*info
)
2537 struct elf32_arm_link_hash_table
*htab
;
2539 htab
= elf32_arm_hash_table (info
);
2540 /* BPABI objects never have a GOT, or associated sections. */
2541 if (htab
->symbian_p
)
2544 if (! _bfd_elf_create_got_section (dynobj
, info
))
2547 htab
->sgot
= bfd_get_section_by_name (dynobj
, ".got");
2548 htab
->sgotplt
= bfd_get_section_by_name (dynobj
, ".got.plt");
2549 if (!htab
->sgot
|| !htab
->sgotplt
)
2552 htab
->srelgot
= bfd_make_section_with_flags (dynobj
,
2553 RELOC_SECTION (htab
, ".got"),
2554 (SEC_ALLOC
| SEC_LOAD
2557 | SEC_LINKER_CREATED
2559 if (htab
->srelgot
== NULL
2560 || ! bfd_set_section_alignment (dynobj
, htab
->srelgot
, 2))
2565 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2566 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2570 elf32_arm_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
2572 struct elf32_arm_link_hash_table
*htab
;
2574 htab
= elf32_arm_hash_table (info
);
2575 if (!htab
->sgot
&& !create_got_section (dynobj
, info
))
2578 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
2581 htab
->splt
= bfd_get_section_by_name (dynobj
, ".plt");
2582 htab
->srelplt
= bfd_get_section_by_name (dynobj
,
2583 RELOC_SECTION (htab
, ".plt"));
2584 htab
->sdynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
2586 htab
->srelbss
= bfd_get_section_by_name (dynobj
,
2587 RELOC_SECTION (htab
, ".bss"));
2589 if (htab
->vxworks_p
)
2591 if (!elf_vxworks_create_dynamic_sections (dynobj
, info
, &htab
->srelplt2
))
2596 htab
->plt_header_size
= 0;
2597 htab
->plt_entry_size
2598 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry
);
2602 htab
->plt_header_size
2603 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry
);
2604 htab
->plt_entry_size
2605 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry
);
2612 || (!info
->shared
&& !htab
->srelbss
))
2618 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2621 elf32_arm_copy_indirect_symbol (struct bfd_link_info
*info
,
2622 struct elf_link_hash_entry
*dir
,
2623 struct elf_link_hash_entry
*ind
)
2625 struct elf32_arm_link_hash_entry
*edir
, *eind
;
2627 edir
= (struct elf32_arm_link_hash_entry
*) dir
;
2628 eind
= (struct elf32_arm_link_hash_entry
*) ind
;
2630 if (eind
->relocs_copied
!= NULL
)
2632 if (edir
->relocs_copied
!= NULL
)
2634 struct elf32_arm_relocs_copied
**pp
;
2635 struct elf32_arm_relocs_copied
*p
;
2637 /* Add reloc counts against the indirect sym to the direct sym
2638 list. Merge any entries against the same section. */
2639 for (pp
= &eind
->relocs_copied
; (p
= *pp
) != NULL
; )
2641 struct elf32_arm_relocs_copied
*q
;
2643 for (q
= edir
->relocs_copied
; q
!= NULL
; q
= q
->next
)
2644 if (q
->section
== p
->section
)
2646 q
->pc_count
+= p
->pc_count
;
2647 q
->count
+= p
->count
;
2654 *pp
= edir
->relocs_copied
;
2657 edir
->relocs_copied
= eind
->relocs_copied
;
2658 eind
->relocs_copied
= NULL
;
2661 if (ind
->root
.type
== bfd_link_hash_indirect
)
2663 /* Copy over PLT info. */
2664 edir
->plt_thumb_refcount
+= eind
->plt_thumb_refcount
;
2665 eind
->plt_thumb_refcount
= 0;
2666 edir
->plt_maybe_thumb_refcount
+= eind
->plt_maybe_thumb_refcount
;
2667 eind
->plt_maybe_thumb_refcount
= 0;
2669 if (dir
->got
.refcount
<= 0)
2671 edir
->tls_type
= eind
->tls_type
;
2672 eind
->tls_type
= GOT_UNKNOWN
;
2676 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
2679 /* Create an ARM elf linker hash table. */
2681 static struct bfd_link_hash_table
*
2682 elf32_arm_link_hash_table_create (bfd
*abfd
)
2684 struct elf32_arm_link_hash_table
*ret
;
2685 bfd_size_type amt
= sizeof (struct elf32_arm_link_hash_table
);
2687 ret
= bfd_malloc (amt
);
2691 if (!_bfd_elf_link_hash_table_init (& ret
->root
, abfd
,
2692 elf32_arm_link_hash_newfunc
,
2693 sizeof (struct elf32_arm_link_hash_entry
)))
2700 ret
->sgotplt
= NULL
;
2701 ret
->srelgot
= NULL
;
2703 ret
->srelplt
= NULL
;
2704 ret
->sdynbss
= NULL
;
2705 ret
->srelbss
= NULL
;
2706 ret
->srelplt2
= NULL
;
2707 ret
->thumb_glue_size
= 0;
2708 ret
->arm_glue_size
= 0;
2709 ret
->bx_glue_size
= 0;
2710 memset (ret
->bx_glue_offset
, 0, sizeof (ret
->bx_glue_offset
));
2711 ret
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
2712 ret
->vfp11_erratum_glue_size
= 0;
2713 ret
->num_vfp11_fixes
= 0;
2714 ret
->bfd_of_glue_owner
= NULL
;
2715 ret
->byteswap_code
= 0;
2716 ret
->target1_is_rel
= 0;
2717 ret
->target2_reloc
= R_ARM_NONE
;
2718 #ifdef FOUR_WORD_PLT
2719 ret
->plt_header_size
= 16;
2720 ret
->plt_entry_size
= 16;
2722 ret
->plt_header_size
= 20;
2723 ret
->plt_entry_size
= 12;
2730 ret
->sym_sec
.abfd
= NULL
;
2732 ret
->tls_ldm_got
.refcount
= 0;
2733 ret
->stub_bfd
= NULL
;
2734 ret
->add_stub_section
= NULL
;
2735 ret
->layout_sections_again
= NULL
;
2736 ret
->stub_group
= NULL
;
2739 ret
->input_list
= NULL
;
2741 if (!bfd_hash_table_init (&ret
->stub_hash_table
, stub_hash_newfunc
,
2742 sizeof (struct elf32_arm_stub_hash_entry
)))
2748 return &ret
->root
.root
;
2751 /* Free the derived linker hash table. */
2754 elf32_arm_hash_table_free (struct bfd_link_hash_table
*hash
)
2756 struct elf32_arm_link_hash_table
*ret
2757 = (struct elf32_arm_link_hash_table
*) hash
;
2759 bfd_hash_table_free (&ret
->stub_hash_table
);
2760 _bfd_generic_link_hash_table_free (hash
);
2763 /* Determine if we're dealing with a Thumb only architecture. */
2766 using_thumb_only (struct elf32_arm_link_hash_table
*globals
)
2768 int arch
= bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
2772 if (arch
!= TAG_CPU_ARCH_V7
)
2775 profile
= bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
2776 Tag_CPU_arch_profile
);
2778 return profile
== 'M';
2781 /* Determine if we're dealing with a Thumb-2 object. */
2784 using_thumb2 (struct elf32_arm_link_hash_table
*globals
)
2786 int arch
= bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
2788 return arch
== TAG_CPU_ARCH_V6T2
|| arch
>= TAG_CPU_ARCH_V7
;
2792 arm_stub_is_thumb (enum elf32_arm_stub_type stub_type
)
2796 case arm_stub_long_branch_thumb_only
:
2797 case arm_stub_long_branch_v4t_thumb_arm
:
2798 case arm_stub_short_branch_v4t_thumb_arm
:
2809 /* Determine the type of stub needed, if any, for a call. */
2811 static enum elf32_arm_stub_type
2812 arm_type_of_stub (struct bfd_link_info
*info
,
2813 asection
*input_sec
,
2814 const Elf_Internal_Rela
*rel
,
2815 unsigned char st_type
,
2816 struct elf32_arm_link_hash_entry
*hash
,
2817 bfd_vma destination
,
2823 bfd_signed_vma branch_offset
;
2824 unsigned int r_type
;
2825 struct elf32_arm_link_hash_table
* globals
;
2828 enum elf32_arm_stub_type stub_type
= arm_stub_none
;
2830 /* We don't know the actual type of destination in case it is of
2831 type STT_SECTION: give up. */
2832 if (st_type
== STT_SECTION
)
2835 globals
= elf32_arm_hash_table (info
);
2837 thumb_only
= using_thumb_only (globals
);
2839 thumb2
= using_thumb2 (globals
);
2841 /* Determine where the call point is. */
2842 location
= (input_sec
->output_offset
2843 + input_sec
->output_section
->vma
2846 branch_offset
= (bfd_signed_vma
)(destination
- location
);
2848 r_type
= ELF32_R_TYPE (rel
->r_info
);
2850 /* If the call will go through a PLT entry then we do not need
2852 if (globals
->splt
!= NULL
&& hash
!= NULL
&& hash
->root
.plt
.offset
!= (bfd_vma
) -1)
2855 if (r_type
== R_ARM_THM_CALL
)
2858 && (branch_offset
> THM_MAX_FWD_BRANCH_OFFSET
2859 || (branch_offset
< THM_MAX_BWD_BRANCH_OFFSET
)))
2861 && (branch_offset
> THM2_MAX_FWD_BRANCH_OFFSET
2862 || (branch_offset
< THM2_MAX_BWD_BRANCH_OFFSET
)))
2863 || ((st_type
!= STT_ARM_TFUNC
) && !globals
->use_blx
))
2865 if (st_type
== STT_ARM_TFUNC
)
2867 /* Thumb to thumb. */
2870 stub_type
= (info
->shared
| globals
->pic_veneer
)
2872 ? ((globals
->use_blx
)
2873 /* V5T and above. */
2874 ? arm_stub_long_branch_any_thumb_pic
2875 /* not yet supported on V4T. */
2878 /* non-PIC stubs. */
2879 : ((globals
->use_blx
)
2880 /* V5T and above. */
2881 ? arm_stub_long_branch_any_any
2883 : arm_stub_long_branch_thumb_only
);
2887 stub_type
= (info
->shared
| globals
->pic_veneer
)
2888 /* PIC stub not yet supported on V4T. */
2891 : arm_stub_long_branch_thumb_only
;
2898 && sym_sec
->owner
!= NULL
2899 && !INTERWORK_FLAG (sym_sec
->owner
))
2901 (*_bfd_error_handler
)
2902 (_("%B(%s): warning: interworking not enabled.\n"
2903 " first occurrence: %B: Thumb call to ARM"),
2904 sym_sec
->owner
, input_bfd
, name
);
2907 stub_type
= (info
->shared
| globals
->pic_veneer
)
2909 ? ((globals
->use_blx
)
2910 /* V5T and above. */
2911 ? arm_stub_long_branch_any_arm_pic
2912 /* not yet supported on V4T. */
2915 /* non-PIC stubs. */
2916 : ((globals
->use_blx
)
2917 /* V5T and above. */
2918 ? arm_stub_long_branch_any_any
2920 : arm_stub_long_branch_v4t_thumb_arm
);
2922 /* Handle v4t short branches. */
2923 if ((stub_type
== arm_stub_long_branch_v4t_thumb_arm
)
2924 && (branch_offset
<= THM_MAX_FWD_BRANCH_OFFSET
)
2925 && (branch_offset
>= THM_MAX_BWD_BRANCH_OFFSET
))
2926 stub_type
= arm_stub_short_branch_v4t_thumb_arm
;
2930 else if (r_type
== R_ARM_CALL
)
2932 if (st_type
== STT_ARM_TFUNC
)
2937 && sym_sec
->owner
!= NULL
2938 && !INTERWORK_FLAG (sym_sec
->owner
))
2940 (*_bfd_error_handler
)
2941 (_("%B(%s): warning: interworking not enabled.\n"
2942 " first occurrence: %B: ARM call to Thumb"),
2943 sym_sec
->owner
, input_bfd
, name
);
2946 /* We have an extra 2-bytes reach because of
2947 the mode change (bit 24 (H) of BLX encoding). */
2948 if (branch_offset
> (ARM_MAX_FWD_BRANCH_OFFSET
+ 2)
2949 || (branch_offset
< ARM_MAX_BWD_BRANCH_OFFSET
)
2950 || !globals
->use_blx
)
2952 stub_type
= (info
->shared
| globals
->pic_veneer
)
2954 ? arm_stub_long_branch_any_thumb_pic
2955 /* non-PIC stubs. */
2956 : ((globals
->use_blx
)
2957 /* V5T and above. */
2958 ? arm_stub_long_branch_any_any
2960 : arm_stub_long_branch_v4t_arm_thumb
);
2966 if (branch_offset
> ARM_MAX_FWD_BRANCH_OFFSET
2967 || (branch_offset
< ARM_MAX_BWD_BRANCH_OFFSET
))
2969 stub_type
= (info
->shared
| globals
->pic_veneer
)
2971 ? arm_stub_long_branch_any_arm_pic
2972 /* non-PIC stubs. */
2973 : arm_stub_long_branch_any_any
;
2981 /* Build a name for an entry in the stub hash table. */
2984 elf32_arm_stub_name (const asection
*input_section
,
2985 const asection
*sym_sec
,
2986 const struct elf32_arm_link_hash_entry
*hash
,
2987 const Elf_Internal_Rela
*rel
)
2994 len
= 8 + 1 + strlen (hash
->root
.root
.root
.string
) + 1 + 8 + 1;
2995 stub_name
= bfd_malloc (len
);
2996 if (stub_name
!= NULL
)
2997 sprintf (stub_name
, "%08x_%s+%x",
2998 input_section
->id
& 0xffffffff,
2999 hash
->root
.root
.root
.string
,
3000 (int) rel
->r_addend
& 0xffffffff);
3004 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3005 stub_name
= bfd_malloc (len
);
3006 if (stub_name
!= NULL
)
3007 sprintf (stub_name
, "%08x_%x:%x+%x",
3008 input_section
->id
& 0xffffffff,
3009 sym_sec
->id
& 0xffffffff,
3010 (int) ELF32_R_SYM (rel
->r_info
) & 0xffffffff,
3011 (int) rel
->r_addend
& 0xffffffff);
3017 /* Look up an entry in the stub hash. Stub entries are cached because
3018 creating the stub name takes a bit of time. */
3020 static struct elf32_arm_stub_hash_entry
*
3021 elf32_arm_get_stub_entry (const asection
*input_section
,
3022 const asection
*sym_sec
,
3023 struct elf_link_hash_entry
*hash
,
3024 const Elf_Internal_Rela
*rel
,
3025 struct elf32_arm_link_hash_table
*htab
)
3027 struct elf32_arm_stub_hash_entry
*stub_entry
;
3028 struct elf32_arm_link_hash_entry
*h
= (struct elf32_arm_link_hash_entry
*) hash
;
3029 const asection
*id_sec
;
3031 if ((input_section
->flags
& SEC_CODE
) == 0)
3034 /* If this input section is part of a group of sections sharing one
3035 stub section, then use the id of the first section in the group.
3036 Stub names need to include a section id, as there may well be
3037 more than one stub used to reach say, printf, and we need to
3038 distinguish between them. */
3039 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3041 if (h
!= NULL
&& h
->stub_cache
!= NULL
3042 && h
->stub_cache
->h
== h
3043 && h
->stub_cache
->id_sec
== id_sec
)
3045 stub_entry
= h
->stub_cache
;
3051 stub_name
= elf32_arm_stub_name (id_sec
, sym_sec
, h
, rel
);
3052 if (stub_name
== NULL
)
3055 stub_entry
= arm_stub_hash_lookup (&htab
->stub_hash_table
,
3056 stub_name
, FALSE
, FALSE
);
3058 h
->stub_cache
= stub_entry
;
3066 /* Add a new stub entry to the stub hash. Not all fields of the new
3067 stub entry are initialised. */
3069 static struct elf32_arm_stub_hash_entry
*
3070 elf32_arm_add_stub (const char *stub_name
,
3072 struct elf32_arm_link_hash_table
*htab
)
3076 struct elf32_arm_stub_hash_entry
*stub_entry
;
3078 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3079 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
3080 if (stub_sec
== NULL
)
3082 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
3083 if (stub_sec
== NULL
)
3089 namelen
= strlen (link_sec
->name
);
3090 len
= namelen
+ sizeof (STUB_SUFFIX
);
3091 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
3095 memcpy (s_name
, link_sec
->name
, namelen
);
3096 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
3097 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
3098 if (stub_sec
== NULL
)
3100 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
3102 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
3105 /* Enter this entry into the linker stub hash table. */
3106 stub_entry
= arm_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3108 if (stub_entry
== NULL
)
3110 (*_bfd_error_handler
) (_("%s: cannot create stub entry %s"),
3116 stub_entry
->stub_sec
= stub_sec
;
3117 stub_entry
->stub_offset
= 0;
3118 stub_entry
->id_sec
= link_sec
;
3123 /* Store an Arm insn into an output section not processed by
3124 elf32_arm_write_section. */
3127 put_arm_insn (struct elf32_arm_link_hash_table
* htab
,
3128 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
3130 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
3131 bfd_putl32 (val
, ptr
);
3133 bfd_putb32 (val
, ptr
);
3136 /* Store a 16-bit Thumb insn into an output section not processed by
3137 elf32_arm_write_section. */
3140 put_thumb_insn (struct elf32_arm_link_hash_table
* htab
,
3141 bfd
* output_bfd
, bfd_vma val
, void * ptr
)
3143 if (htab
->byteswap_code
!= bfd_little_endian (output_bfd
))
3144 bfd_putl16 (val
, ptr
);
3146 bfd_putb16 (val
, ptr
);
3150 arm_build_one_stub (struct bfd_hash_entry
*gen_entry
,
3153 struct elf32_arm_stub_hash_entry
*stub_entry
;
3154 struct bfd_link_info
*info
;
3155 struct elf32_arm_link_hash_table
*htab
;
3163 const insn_sequence
*template;
3165 struct elf32_arm_link_hash_table
* globals
;
3166 int stub_reloc_idx
= -1;
3167 int stub_reloc_offset
= 0;
3169 /* Massage our args to the form they really have. */
3170 stub_entry
= (struct elf32_arm_stub_hash_entry
*) gen_entry
;
3171 info
= (struct bfd_link_info
*) in_arg
;
3173 globals
= elf32_arm_hash_table (info
);
3175 htab
= elf32_arm_hash_table (info
);
3176 stub_sec
= stub_entry
->stub_sec
;
3178 /* Make a note of the offset within the stubs for this entry. */
3179 stub_entry
->stub_offset
= stub_sec
->size
;
3180 loc
= stub_sec
->contents
+ stub_entry
->stub_offset
;
3182 stub_bfd
= stub_sec
->owner
;
3184 /* This is the address of the start of the stub. */
3185 stub_addr
= stub_sec
->output_section
->vma
+ stub_sec
->output_offset
3186 + stub_entry
->stub_offset
;
3188 /* This is the address of the stub destination. */
3189 sym_value
= (stub_entry
->target_value
3190 + stub_entry
->target_section
->output_offset
3191 + stub_entry
->target_section
->output_section
->vma
);
3193 template = stub_entry
->stub_template
;
3194 template_size
= stub_entry
->stub_template_size
;
3197 for (i
= 0; i
< template_size
; i
++)
3199 switch (template[i
].type
)
3202 put_thumb_insn (globals
, stub_bfd
, template[i
].data
, loc
+ size
);
3207 put_arm_insn (globals
, stub_bfd
, template[i
].data
, loc
+ size
);
3208 /* Handle cases where the target is encoded within the
3210 if (template[i
].reloc_type
== R_ARM_JUMP24
)
3213 stub_reloc_offset
= size
;
3219 bfd_put_32 (stub_bfd
, template[i
].data
, loc
+ size
);
3221 stub_reloc_offset
= size
;
3231 stub_sec
->size
+= size
;
3233 /* Stub size has already been computed in arm_size_one_stub. Check
3235 BFD_ASSERT (size
== stub_entry
->stub_size
);
3237 /* Destination is Thumb. Force bit 0 to 1 to reflect this. */
3238 if (stub_entry
->st_type
== STT_ARM_TFUNC
)
3241 /* Assume there is one and only one entry to relocate in each stub. */
3242 BFD_ASSERT (stub_reloc_idx
!= -1);
3244 _bfd_final_link_relocate (elf32_arm_howto_from_type (template[stub_reloc_idx
].reloc_type
),
3245 stub_bfd
, stub_sec
, stub_sec
->contents
,
3246 stub_entry
->stub_offset
+ stub_reloc_offset
,
3247 sym_value
, template[stub_reloc_idx
].reloc_addend
);
3252 /* As above, but don't actually build the stub. Just bump offset so
3253 we know stub section sizes. */
3256 arm_size_one_stub (struct bfd_hash_entry
*gen_entry
,
3259 struct elf32_arm_stub_hash_entry
*stub_entry
;
3260 struct elf32_arm_link_hash_table
*htab
;
3261 const insn_sequence
*template;
3266 /* Massage our args to the form they really have. */
3267 stub_entry
= (struct elf32_arm_stub_hash_entry
*) gen_entry
;
3268 htab
= (struct elf32_arm_link_hash_table
*) in_arg
;
3270 switch (stub_entry
->stub_type
)
3272 case arm_stub_long_branch_any_any
:
3273 template = elf32_arm_stub_long_branch_any_any
;
3274 template_size
= sizeof (elf32_arm_stub_long_branch_any_any
) / sizeof (insn_sequence
);
3277 case arm_stub_long_branch_v4t_arm_thumb
:
3278 template = elf32_arm_stub_long_branch_v4t_arm_thumb
;
3279 template_size
= sizeof (elf32_arm_stub_long_branch_v4t_arm_thumb
) / sizeof (insn_sequence
);
3281 case arm_stub_long_branch_thumb_only
:
3282 template = elf32_arm_stub_long_branch_thumb_only
;
3283 template_size
= sizeof (elf32_arm_stub_long_branch_thumb_only
) / sizeof (insn_sequence
);
3285 case arm_stub_long_branch_v4t_thumb_arm
:
3286 template = elf32_arm_stub_long_branch_v4t_thumb_arm
;
3287 template_size
= sizeof (elf32_arm_stub_long_branch_v4t_thumb_arm
) / sizeof (insn_sequence
);
3289 case arm_stub_short_branch_v4t_thumb_arm
:
3290 template = elf32_arm_stub_short_branch_v4t_thumb_arm
;
3291 template_size
= sizeof (elf32_arm_stub_short_branch_v4t_thumb_arm
) / sizeof (insn_sequence
);
3293 case arm_stub_long_branch_any_arm_pic
:
3294 template = elf32_arm_stub_long_branch_any_arm_pic
;
3295 template_size
= sizeof (elf32_arm_stub_long_branch_any_arm_pic
) / sizeof (insn_sequence
);
3297 case arm_stub_long_branch_any_thumb_pic
:
3298 template = elf32_arm_stub_long_branch_any_thumb_pic
;
3299 template_size
= sizeof (elf32_arm_stub_long_branch_any_thumb_pic
) / sizeof (insn_sequence
);
3307 for (i
= 0; i
< template_size
; i
++)
3309 switch (template[i
].type
)
3329 stub_entry
->stub_size
= size
;
3330 stub_entry
->stub_template
= template;
3331 stub_entry
->stub_template_size
= template_size
;
3333 size
= (size
+ 7) & ~7;
3334 stub_entry
->stub_sec
->size
+= size
;
3339 /* External entry points for sizing and building linker stubs. */
3341 /* Set up various things so that we can make a list of input sections
3342 for each output section included in the link. Returns -1 on error,
3343 0 when no stubs will be needed, and 1 on success. */
3346 elf32_arm_setup_section_lists (bfd
*output_bfd
,
3347 struct bfd_link_info
*info
)
3350 unsigned int bfd_count
;
3351 int top_id
, top_index
;
3353 asection
**input_list
, **list
;
3355 struct elf32_arm_link_hash_table
*htab
= elf32_arm_hash_table (info
);
3357 if (! is_elf_hash_table (htab
))
3360 /* Count the number of input BFDs and find the top input section id. */
3361 for (input_bfd
= info
->input_bfds
, bfd_count
= 0, top_id
= 0;
3363 input_bfd
= input_bfd
->link_next
)
3366 for (section
= input_bfd
->sections
;
3368 section
= section
->next
)
3370 if (top_id
< section
->id
)
3371 top_id
= section
->id
;
3374 htab
->bfd_count
= bfd_count
;
3376 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
3377 htab
->stub_group
= bfd_zmalloc (amt
);
3378 if (htab
->stub_group
== NULL
)
3381 /* We can't use output_bfd->section_count here to find the top output
3382 section index as some sections may have been removed, and
3383 _bfd_strip_section_from_output doesn't renumber the indices. */
3384 for (section
= output_bfd
->sections
, top_index
= 0;
3386 section
= section
->next
)
3388 if (top_index
< section
->index
)
3389 top_index
= section
->index
;
3392 htab
->top_index
= top_index
;
3393 amt
= sizeof (asection
*) * (top_index
+ 1);
3394 input_list
= bfd_malloc (amt
);
3395 htab
->input_list
= input_list
;
3396 if (input_list
== NULL
)
3399 /* For sections we aren't interested in, mark their entries with a
3400 value we can check later. */
3401 list
= input_list
+ top_index
;
3403 *list
= bfd_abs_section_ptr
;
3404 while (list
-- != input_list
);
3406 for (section
= output_bfd
->sections
;
3408 section
= section
->next
)
3410 if ((section
->flags
& SEC_CODE
) != 0)
3411 input_list
[section
->index
] = NULL
;
3417 /* The linker repeatedly calls this function for each input section,
3418 in the order that input sections are linked into output sections.
3419 Build lists of input sections to determine groupings between which
3420 we may insert linker stubs. */
3423 elf32_arm_next_input_section (struct bfd_link_info
*info
,
3426 struct elf32_arm_link_hash_table
*htab
= elf32_arm_hash_table (info
);
3428 if (isec
->output_section
->index
<= htab
->top_index
)
3430 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
3432 if (*list
!= bfd_abs_section_ptr
)
3434 /* Steal the link_sec pointer for our list. */
3435 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3436 /* This happens to make the list in reverse order,
3437 which we reverse later. */
3438 PREV_SEC (isec
) = *list
;
3444 /* See whether we can group stub sections together. Grouping stub
3445 sections may result in fewer stubs. More importantly, we need to
3446 put all .init* and .fini* stubs at the end of the .init or
3447 .fini output sections respectively, because glibc splits the
3448 _init and _fini functions into multiple parts. Putting a stub in
3449 the middle of a function is not a good idea. */
3452 group_sections (struct elf32_arm_link_hash_table
*htab
,
3453 bfd_size_type stub_group_size
,
3454 bfd_boolean stubs_always_after_branch
)
3456 asection
**list
= htab
->input_list
;
3460 asection
*tail
= *list
;
3464 if (tail
== bfd_abs_section_ptr
)
3467 /* Reverse the list: we must avoid placing stubs at the
3468 beginning of the section because the beginning of the text
3469 section may be required for an interrupt vector in bare metal
3471 #define NEXT_SEC PREV_SEC
3476 asection
*h
= PREV_SEC (head
);
3477 NEXT_SEC (head
) = tp
;
3484 while (head
!= NULL
)
3488 bfd_size_type total
;
3492 while ((next
= NEXT_SEC (curr
)) != NULL
3493 && ((total
+= next
->output_offset
- curr
->output_offset
)
3497 /* OK, the size from the start to the start of CURR is less
3498 than stub_group_size and thus can be handled by one stub
3499 section. (Or the head section is itself larger than
3500 stub_group_size, in which case we may be toast.)
3501 We should really be keeping track of the total size of
3502 stubs added here, as stubs contribute to the final output
3506 next
= NEXT_SEC (head
);
3507 /* Set up this stub group. */
3508 htab
->stub_group
[head
->id
].link_sec
= curr
;
3510 while (head
!= curr
&& (head
= next
) != NULL
);
3512 /* But wait, there's more! Input sections up to stub_group_size
3513 bytes after the stub section can be handled by it too. */
3514 if (!stubs_always_after_branch
)
3518 && ((total
+= next
->output_offset
- head
->output_offset
)
3522 next
= NEXT_SEC (head
);
3523 htab
->stub_group
[head
->id
].link_sec
= curr
;
3529 while (list
++ != htab
->input_list
+ htab
->top_index
);
3531 free (htab
->input_list
);
3536 /* Determine and set the size of the stub section for a final link.
3538 The basic idea here is to examine all the relocations looking for
3539 PC-relative calls to a target that is unreachable with a "bl"
3543 elf32_arm_size_stubs (bfd
*output_bfd
,
3545 struct bfd_link_info
*info
,
3546 bfd_signed_vma group_size
,
3547 asection
* (*add_stub_section
) (const char *, asection
*),
3548 void (*layout_sections_again
) (void))
3550 bfd_size_type stub_group_size
;
3551 bfd_boolean stubs_always_after_branch
;
3552 bfd_boolean stub_changed
= 0;
3553 struct elf32_arm_link_hash_table
*htab
= elf32_arm_hash_table (info
);
3555 /* Propagate mach to stub bfd, because it may not have been
3556 finalized when we created stub_bfd. */
3557 bfd_set_arch_mach (stub_bfd
, bfd_get_arch (output_bfd
),
3558 bfd_get_mach (output_bfd
));
3560 /* Stash our params away. */
3561 htab
->stub_bfd
= stub_bfd
;
3562 htab
->add_stub_section
= add_stub_section
;
3563 htab
->layout_sections_again
= layout_sections_again
;
3564 stubs_always_after_branch
= group_size
< 0;
3566 stub_group_size
= -group_size
;
3568 stub_group_size
= group_size
;
3570 if (stub_group_size
== 1)
3572 /* Default values. */
3573 /* Thumb branch range is +-4MB has to be used as the default
3574 maximum size (a given section can contain both ARM and Thumb
3575 code, so the worst case has to be taken into account).
3577 This value is 24K less than that, which allows for 2025
3578 12-byte stubs. If we exceed that, then we will fail to link.
3579 The user will have to relink with an explicit group size
3581 stub_group_size
= 4170000;
3584 group_sections (htab
, stub_group_size
, stubs_always_after_branch
);
3589 unsigned int bfd_indx
;
3592 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
3594 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
3596 Elf_Internal_Shdr
*symtab_hdr
;
3598 Elf_Internal_Sym
*local_syms
= NULL
;
3600 /* We'll need the symbol table in a second. */
3601 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
3602 if (symtab_hdr
->sh_info
== 0)
3605 /* Walk over each section attached to the input bfd. */
3606 for (section
= input_bfd
->sections
;
3608 section
= section
->next
)
3610 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
3612 /* If there aren't any relocs, then there's nothing more
3614 if ((section
->flags
& SEC_RELOC
) == 0
3615 || section
->reloc_count
== 0
3616 || (section
->flags
& SEC_CODE
) == 0)
3619 /* If this section is a link-once section that will be
3620 discarded, then don't create any stubs. */
3621 if (section
->output_section
== NULL
3622 || section
->output_section
->owner
!= output_bfd
)
3625 /* Get the relocs. */
3627 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
,
3628 NULL
, info
->keep_memory
);
3629 if (internal_relocs
== NULL
)
3630 goto error_ret_free_local
;
3632 /* Now examine each relocation. */
3633 irela
= internal_relocs
;
3634 irelaend
= irela
+ section
->reloc_count
;
3635 for (; irela
< irelaend
; irela
++)
3637 unsigned int r_type
, r_indx
;
3638 enum elf32_arm_stub_type stub_type
;
3639 struct elf32_arm_stub_hash_entry
*stub_entry
;
3642 bfd_vma destination
;
3643 struct elf32_arm_link_hash_entry
*hash
;
3644 const char *sym_name
;
3646 const asection
*id_sec
;
3647 unsigned char st_type
;
3649 r_type
= ELF32_R_TYPE (irela
->r_info
);
3650 r_indx
= ELF32_R_SYM (irela
->r_info
);
3652 if (r_type
>= (unsigned int) R_ARM_max
)
3654 bfd_set_error (bfd_error_bad_value
);
3655 error_ret_free_internal
:
3656 if (elf_section_data (section
)->relocs
== NULL
)
3657 free (internal_relocs
);
3658 goto error_ret_free_local
;
3661 /* Only look for stubs on call instructions. */
3662 if ((r_type
!= (unsigned int) R_ARM_CALL
)
3663 && (r_type
!= (unsigned int) R_ARM_THM_CALL
))
3666 /* Now determine the call target, its name, value,
3673 if (r_indx
< symtab_hdr
->sh_info
)
3675 /* It's a local symbol. */
3676 Elf_Internal_Sym
*sym
;
3677 Elf_Internal_Shdr
*hdr
;
3679 if (local_syms
== NULL
)
3682 = (Elf_Internal_Sym
*) symtab_hdr
->contents
;
3683 if (local_syms
== NULL
)
3685 = bfd_elf_get_elf_syms (input_bfd
, symtab_hdr
,
3686 symtab_hdr
->sh_info
, 0,
3688 if (local_syms
== NULL
)
3689 goto error_ret_free_internal
;
3692 sym
= local_syms
+ r_indx
;
3693 hdr
= elf_elfsections (input_bfd
)[sym
->st_shndx
];
3694 sym_sec
= hdr
->bfd_section
;
3695 if (ELF_ST_TYPE (sym
->st_info
) != STT_SECTION
)
3696 sym_value
= sym
->st_value
;
3697 destination
= (sym_value
+ irela
->r_addend
3698 + sym_sec
->output_offset
3699 + sym_sec
->output_section
->vma
);
3700 st_type
= ELF_ST_TYPE (sym
->st_info
);
3702 = bfd_elf_string_from_elf_section (input_bfd
,
3703 symtab_hdr
->sh_link
,
3708 /* It's an external symbol. */
3711 e_indx
= r_indx
- symtab_hdr
->sh_info
;
3712 hash
= ((struct elf32_arm_link_hash_entry
*)
3713 elf_sym_hashes (input_bfd
)[e_indx
]);
3715 while (hash
->root
.root
.type
== bfd_link_hash_indirect
3716 || hash
->root
.root
.type
== bfd_link_hash_warning
)
3717 hash
= ((struct elf32_arm_link_hash_entry
*)
3718 hash
->root
.root
.u
.i
.link
);
3720 if (hash
->root
.root
.type
== bfd_link_hash_defined
3721 || hash
->root
.root
.type
== bfd_link_hash_defweak
)
3723 sym_sec
= hash
->root
.root
.u
.def
.section
;
3724 sym_value
= hash
->root
.root
.u
.def
.value
;
3725 if (sym_sec
->output_section
!= NULL
)
3726 destination
= (sym_value
+ irela
->r_addend
3727 + sym_sec
->output_offset
3728 + sym_sec
->output_section
->vma
);
3730 else if (hash
->root
.root
.type
== bfd_link_hash_undefweak
3731 || hash
->root
.root
.type
== bfd_link_hash_undefined
)
3732 /* For a shared library, these will need a PLT stub,
3733 which is treated separately.
3734 For absolute code, they cannot be handled. */
3738 bfd_set_error (bfd_error_bad_value
);
3739 goto error_ret_free_internal
;
3741 st_type
= ELF_ST_TYPE (hash
->root
.type
);
3742 sym_name
= hash
->root
.root
.root
.string
;
3745 /* Determine what (if any) linker stub is needed. */
3746 stub_type
= arm_type_of_stub (info
, section
, irela
, st_type
,
3747 hash
, destination
, sym_sec
,
3748 input_bfd
, sym_name
);
3749 if (stub_type
== arm_stub_none
)
3752 /* Support for grouping stub sections. */
3753 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
3755 /* Get the name of this stub. */
3756 stub_name
= elf32_arm_stub_name (id_sec
, sym_sec
, hash
, irela
);
3758 goto error_ret_free_internal
;
3760 stub_entry
= arm_stub_hash_lookup (&htab
->stub_hash_table
,
3763 if (stub_entry
!= NULL
)
3765 /* The proper stub has already been created. */
3770 stub_entry
= elf32_arm_add_stub (stub_name
, section
, htab
);
3771 if (stub_entry
== NULL
)
3774 goto error_ret_free_internal
;
3777 stub_entry
->target_value
= sym_value
;
3778 stub_entry
->target_section
= sym_sec
;
3779 stub_entry
->stub_type
= stub_type
;
3780 stub_entry
->h
= hash
;
3781 stub_entry
->st_type
= st_type
;
3783 if (sym_name
== NULL
)
3784 sym_name
= "unnamed";
3785 stub_entry
->output_name
3786 = bfd_alloc (htab
->stub_bfd
,
3787 sizeof (THUMB2ARM_GLUE_ENTRY_NAME
)
3788 + strlen (sym_name
));
3789 if (stub_entry
->output_name
== NULL
)
3792 goto error_ret_free_internal
;
3795 /* For historical reasons, use the existing names for
3796 ARM-to-Thumb and Thumb-to-ARM stubs. */
3797 if (r_type
== (unsigned int) R_ARM_THM_CALL
3798 && st_type
!= STT_ARM_TFUNC
)
3799 sprintf (stub_entry
->output_name
, THUMB2ARM_GLUE_ENTRY_NAME
,
3801 else if (r_type
== (unsigned int) R_ARM_CALL
3802 && st_type
== STT_ARM_TFUNC
)
3803 sprintf (stub_entry
->output_name
, ARM2THUMB_GLUE_ENTRY_NAME
,
3806 sprintf (stub_entry
->output_name
, STUB_ENTRY_NAME
,
3809 stub_changed
= TRUE
;
3812 /* We're done with the internal relocs, free them. */
3813 if (elf_section_data (section
)->relocs
== NULL
)
3814 free (internal_relocs
);
3821 /* OK, we've added some stubs. Find out the new size of the
3823 for (stub_sec
= htab
->stub_bfd
->sections
;
3825 stub_sec
= stub_sec
->next
)
3828 bfd_hash_traverse (&htab
->stub_hash_table
, arm_size_one_stub
, htab
);
3830 /* Ask the linker to do its stuff. */
3831 (*htab
->layout_sections_again
) ();
3832 stub_changed
= FALSE
;
3837 error_ret_free_local
:
3841 /* Build all the stubs associated with the current output file. The
3842 stubs are kept in a hash table attached to the main linker hash
3843 table. We also set up the .plt entries for statically linked PIC
3844 functions here. This function is called via arm_elf_finish in the
3848 elf32_arm_build_stubs (struct bfd_link_info
*info
)
3851 struct bfd_hash_table
*table
;
3852 struct elf32_arm_link_hash_table
*htab
;
3854 htab
= elf32_arm_hash_table (info
);
3856 for (stub_sec
= htab
->stub_bfd
->sections
;
3858 stub_sec
= stub_sec
->next
)
3862 /* Ignore non-stub sections. */
3863 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
3866 /* Allocate memory to hold the linker stubs. */
3867 size
= stub_sec
->size
;
3868 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, size
);
3869 if (stub_sec
->contents
== NULL
&& size
!= 0)
3874 /* Build the stubs as directed by the stub hash table. */
3875 table
= &htab
->stub_hash_table
;
3876 bfd_hash_traverse (table
, arm_build_one_stub
, info
);
3881 /* Locate the Thumb encoded calling stub for NAME. */
3883 static struct elf_link_hash_entry
*
3884 find_thumb_glue (struct bfd_link_info
*link_info
,
3886 char **error_message
)
3889 struct elf_link_hash_entry
*hash
;
3890 struct elf32_arm_link_hash_table
*hash_table
;
3892 /* We need a pointer to the armelf specific hash table. */
3893 hash_table
= elf32_arm_hash_table (link_info
);
3895 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
3896 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
3898 BFD_ASSERT (tmp_name
);
3900 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
3902 hash
= elf_link_hash_lookup
3903 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3906 && asprintf (error_message
, _("unable to find THUMB glue '%s' for '%s'"),
3907 tmp_name
, name
) == -1)
3908 *error_message
= (char *) bfd_errmsg (bfd_error_system_call
);
3915 /* Locate the ARM encoded calling stub for NAME. */
3917 static struct elf_link_hash_entry
*
3918 find_arm_glue (struct bfd_link_info
*link_info
,
3920 char **error_message
)
3923 struct elf_link_hash_entry
*myh
;
3924 struct elf32_arm_link_hash_table
*hash_table
;
3926 /* We need a pointer to the elfarm specific hash table. */
3927 hash_table
= elf32_arm_hash_table (link_info
);
3929 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
3930 + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
3932 BFD_ASSERT (tmp_name
);
3934 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
3936 myh
= elf_link_hash_lookup
3937 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
3940 && asprintf (error_message
, _("unable to find ARM glue '%s' for '%s'"),
3941 tmp_name
, name
) == -1)
3942 *error_message
= (char *) bfd_errmsg (bfd_error_system_call
);
3949 /* ARM->Thumb glue (static images):
3953 ldr r12, __func_addr
3956 .word func @ behave as if you saw a ARM_32 reloc.
3963 .word func @ behave as if you saw a ARM_32 reloc.
3965 (relocatable images)
3968 ldr r12, __func_offset
3974 #define ARM2THUMB_STATIC_GLUE_SIZE 12
3975 static const insn32 a2t1_ldr_insn
= 0xe59fc000;
3976 static const insn32 a2t2_bx_r12_insn
= 0xe12fff1c;
3977 static const insn32 a2t3_func_addr_insn
= 0x00000001;
3979 #define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
3980 static const insn32 a2t1v5_ldr_insn
= 0xe51ff004;
3981 static const insn32 a2t2v5_func_addr_insn
= 0x00000001;
3983 #define ARM2THUMB_PIC_GLUE_SIZE 16
3984 static const insn32 a2t1p_ldr_insn
= 0xe59fc004;
3985 static const insn32 a2t2p_add_pc_insn
= 0xe08cc00f;
3986 static const insn32 a2t3p_bx_r12_insn
= 0xe12fff1c;
3988 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
3992 __func_from_thumb: __func_from_thumb:
3994 nop ldr r6, __func_addr
4004 #define THUMB2ARM_GLUE_SIZE 8
4005 static const insn16 t2a1_bx_pc_insn
= 0x4778;
4006 static const insn16 t2a2_noop_insn
= 0x46c0;
4007 static const insn32 t2a3_b_insn
= 0xea000000;
4009 #define VFP11_ERRATUM_VENEER_SIZE 8
4011 #define ARM_BX_VENEER_SIZE 12
4012 static const insn32 armbx1_tst_insn
= 0xe3100001;
4013 static const insn32 armbx2_moveq_insn
= 0x01a0f000;
4014 static const insn32 armbx3_bx_insn
= 0xe12fff10;
4016 #ifndef ELFARM_NABI_C_INCLUDED
4018 arm_allocate_glue_section_space (bfd
* abfd
, bfd_size_type size
, const char * name
)
4021 bfd_byte
* contents
;
4026 BFD_ASSERT (abfd
!= NULL
);
4028 s
= bfd_get_section_by_name (abfd
, name
);
4029 BFD_ASSERT (s
!= NULL
);
4031 contents
= bfd_alloc (abfd
, size
);
4033 BFD_ASSERT (s
->size
== size
);
4034 s
->contents
= contents
;
4038 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info
* info
)
4040 struct elf32_arm_link_hash_table
* globals
;
4042 globals
= elf32_arm_hash_table (info
);
4043 BFD_ASSERT (globals
!= NULL
);
4045 arm_allocate_glue_section_space (globals
->bfd_of_glue_owner
,
4046 globals
->arm_glue_size
,
4047 ARM2THUMB_GLUE_SECTION_NAME
);
4049 arm_allocate_glue_section_space (globals
->bfd_of_glue_owner
,
4050 globals
->thumb_glue_size
,
4051 THUMB2ARM_GLUE_SECTION_NAME
);
4053 arm_allocate_glue_section_space (globals
->bfd_of_glue_owner
,
4054 globals
->vfp11_erratum_glue_size
,
4055 VFP11_ERRATUM_VENEER_SECTION_NAME
);
4057 arm_allocate_glue_section_space (globals
->bfd_of_glue_owner
,
4058 globals
->bx_glue_size
,
4059 ARM_BX_GLUE_SECTION_NAME
);
4064 /* Allocate space and symbols for calling a Thumb function from Arm mode.
4065 returns the symbol identifying the stub. */
4067 static struct elf_link_hash_entry
*
4068 record_arm_to_thumb_glue (struct bfd_link_info
* link_info
,
4069 struct elf_link_hash_entry
* h
)
4071 const char * name
= h
->root
.root
.string
;
4074 struct elf_link_hash_entry
* myh
;
4075 struct bfd_link_hash_entry
* bh
;
4076 struct elf32_arm_link_hash_table
* globals
;
4080 globals
= elf32_arm_hash_table (link_info
);
4082 BFD_ASSERT (globals
!= NULL
);
4083 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4085 s
= bfd_get_section_by_name
4086 (globals
->bfd_of_glue_owner
, ARM2THUMB_GLUE_SECTION_NAME
);
4088 BFD_ASSERT (s
!= NULL
);
4090 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
) + strlen (ARM2THUMB_GLUE_ENTRY_NAME
) + 1);
4092 BFD_ASSERT (tmp_name
);
4094 sprintf (tmp_name
, ARM2THUMB_GLUE_ENTRY_NAME
, name
);
4096 myh
= elf_link_hash_lookup
4097 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
4101 /* We've already seen this guy. */
4106 /* The only trick here is using hash_table->arm_glue_size as the value.
4107 Even though the section isn't allocated yet, this is where we will be
4108 putting it. The +1 on the value marks that the stub has not been
4109 output yet - not that it is a Thumb function. */
4111 val
= globals
->arm_glue_size
+ 1;
4112 _bfd_generic_link_add_one_symbol (link_info
, globals
->bfd_of_glue_owner
,
4113 tmp_name
, BSF_GLOBAL
, s
, val
,
4114 NULL
, TRUE
, FALSE
, &bh
);
4116 myh
= (struct elf_link_hash_entry
*) bh
;
4117 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
4118 myh
->forced_local
= 1;
4122 if (link_info
->shared
|| globals
->root
.is_relocatable_executable
4123 || globals
->pic_veneer
)
4124 size
= ARM2THUMB_PIC_GLUE_SIZE
;
4125 else if (globals
->use_blx
)
4126 size
= ARM2THUMB_V5_STATIC_GLUE_SIZE
;
4128 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
4131 globals
->arm_glue_size
+= size
;
4137 record_thumb_to_arm_glue (struct bfd_link_info
*link_info
,
4138 struct elf_link_hash_entry
*h
)
4140 const char *name
= h
->root
.root
.string
;
4143 struct elf_link_hash_entry
*myh
;
4144 struct bfd_link_hash_entry
*bh
;
4145 struct elf32_arm_link_hash_table
*hash_table
;
4148 hash_table
= elf32_arm_hash_table (link_info
);
4150 BFD_ASSERT (hash_table
!= NULL
);
4151 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
4153 s
= bfd_get_section_by_name
4154 (hash_table
->bfd_of_glue_owner
, THUMB2ARM_GLUE_SECTION_NAME
);
4156 BFD_ASSERT (s
!= NULL
);
4158 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
4159 + strlen (THUMB2ARM_GLUE_ENTRY_NAME
) + 1);
4161 BFD_ASSERT (tmp_name
);
4163 sprintf (tmp_name
, THUMB2ARM_GLUE_ENTRY_NAME
, name
);
4165 myh
= elf_link_hash_lookup
4166 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
4170 /* We've already seen this guy. */
4175 /* The only trick here is using hash_table->thumb_glue_size as the value.
4176 Even though the section isn't allocated yet, this is where we will be
4177 putting it. The +1 on the value marks that the stub has not been
4178 output yet - not that it is a Thumb function. */
4180 val
= hash_table
->thumb_glue_size
+ 1;
4181 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
4182 tmp_name
, BSF_GLOBAL
, s
, val
,
4183 NULL
, TRUE
, FALSE
, &bh
);
4185 /* If we mark it 'Thumb', the disassembler will do a better job. */
4186 myh
= (struct elf_link_hash_entry
*) bh
;
4187 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
4188 myh
->forced_local
= 1;
4192 #define CHANGE_TO_ARM "__%s_change_to_arm"
4193 #define BACK_FROM_ARM "__%s_back_from_arm"
4195 /* Allocate another symbol to mark where we switch to Arm mode. */
4196 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (name
)
4197 + strlen (CHANGE_TO_ARM
) + 1);
4199 BFD_ASSERT (tmp_name
);
4201 sprintf (tmp_name
, CHANGE_TO_ARM
, name
);
4204 val
= hash_table
->thumb_glue_size
+ 4,
4205 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
4206 tmp_name
, BSF_LOCAL
, s
, val
,
4207 NULL
, TRUE
, FALSE
, &bh
);
4211 s
->size
+= THUMB2ARM_GLUE_SIZE
;
4212 hash_table
->thumb_glue_size
+= THUMB2ARM_GLUE_SIZE
;
4216 /* Allocate space for ARMv4 BX veneers. */
4219 record_arm_bx_glue (struct bfd_link_info
* link_info
, int reg
)
4222 struct elf32_arm_link_hash_table
*globals
;
4224 struct elf_link_hash_entry
*myh
;
4225 struct bfd_link_hash_entry
*bh
;
4228 /* BX PC does not need a veneer. */
4232 globals
= elf32_arm_hash_table (link_info
);
4234 BFD_ASSERT (globals
!= NULL
);
4235 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
4237 /* Check if this veneer has already been allocated. */
4238 if (globals
->bx_glue_offset
[reg
])
4241 s
= bfd_get_section_by_name
4242 (globals
->bfd_of_glue_owner
, ARM_BX_GLUE_SECTION_NAME
);
4244 BFD_ASSERT (s
!= NULL
);
4246 /* Add symbol for veneer. */
4247 tmp_name
= bfd_malloc ((bfd_size_type
) strlen (ARM_BX_GLUE_ENTRY_NAME
) + 1);
4249 BFD_ASSERT (tmp_name
);
4251 sprintf (tmp_name
, ARM_BX_GLUE_ENTRY_NAME
, reg
);
4253 myh
= elf_link_hash_lookup
4254 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
4256 BFD_ASSERT (myh
== NULL
);
4259 val
= globals
->bx_glue_size
;
4260 _bfd_generic_link_add_one_symbol (link_info
, globals
->bfd_of_glue_owner
,
4261 tmp_name
, BSF_FUNCTION
| BSF_LOCAL
, s
, val
,
4262 NULL
, TRUE
, FALSE
, &bh
);
4264 myh
= (struct elf_link_hash_entry
*) bh
;
4265 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
4266 myh
->forced_local
= 1;
4268 s
->size
+= ARM_BX_VENEER_SIZE
;
4269 globals
->bx_glue_offset
[reg
] = globals
->bx_glue_size
| 2;
4270 globals
->bx_glue_size
+= ARM_BX_VENEER_SIZE
;
4274 /* Add an entry to the code/data map for section SEC. */
4277 elf32_arm_section_map_add (asection
*sec
, char type
, bfd_vma vma
)
4279 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
4280 unsigned int newidx
;
4282 if (sec_data
->map
== NULL
)
4284 sec_data
->map
= bfd_malloc (sizeof (elf32_arm_section_map
));
4285 sec_data
->mapcount
= 0;
4286 sec_data
->mapsize
= 1;
4289 newidx
= sec_data
->mapcount
++;
4291 if (sec_data
->mapcount
> sec_data
->mapsize
)
4293 sec_data
->mapsize
*= 2;
4294 sec_data
->map
= bfd_realloc_or_free (sec_data
->map
, sec_data
->mapsize
4295 * sizeof (elf32_arm_section_map
));
4300 sec_data
->map
[newidx
].vma
= vma
;
4301 sec_data
->map
[newidx
].type
= type
;
4306 /* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
4307 veneers are handled for now. */
4310 record_vfp11_erratum_veneer (struct bfd_link_info
*link_info
,
4311 elf32_vfp11_erratum_list
*branch
,
4313 asection
*branch_sec
,
4314 unsigned int offset
)
4317 struct elf32_arm_link_hash_table
*hash_table
;
4319 struct elf_link_hash_entry
*myh
;
4320 struct bfd_link_hash_entry
*bh
;
4322 struct _arm_elf_section_data
*sec_data
;
4324 elf32_vfp11_erratum_list
*newerr
;
4326 hash_table
= elf32_arm_hash_table (link_info
);
4328 BFD_ASSERT (hash_table
!= NULL
);
4329 BFD_ASSERT (hash_table
->bfd_of_glue_owner
!= NULL
);
4331 s
= bfd_get_section_by_name
4332 (hash_table
->bfd_of_glue_owner
, VFP11_ERRATUM_VENEER_SECTION_NAME
);
4334 sec_data
= elf32_arm_section_data (s
);
4336 BFD_ASSERT (s
!= NULL
);
4338 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
4339 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
4341 BFD_ASSERT (tmp_name
);
4343 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
4344 hash_table
->num_vfp11_fixes
);
4346 myh
= elf_link_hash_lookup
4347 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
4349 BFD_ASSERT (myh
== NULL
);
4352 val
= hash_table
->vfp11_erratum_glue_size
;
4353 _bfd_generic_link_add_one_symbol (link_info
, hash_table
->bfd_of_glue_owner
,
4354 tmp_name
, BSF_FUNCTION
| BSF_LOCAL
, s
, val
,
4355 NULL
, TRUE
, FALSE
, &bh
);
4357 myh
= (struct elf_link_hash_entry
*) bh
;
4358 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
4359 myh
->forced_local
= 1;
4361 /* Link veneer back to calling location. */
4362 errcount
= ++(sec_data
->erratumcount
);
4363 newerr
= bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
4365 newerr
->type
= VFP11_ERRATUM_ARM_VENEER
;
4367 newerr
->u
.v
.branch
= branch
;
4368 newerr
->u
.v
.id
= hash_table
->num_vfp11_fixes
;
4369 branch
->u
.b
.veneer
= newerr
;
4371 newerr
->next
= sec_data
->erratumlist
;
4372 sec_data
->erratumlist
= newerr
;
4374 /* A symbol for the return from the veneer. */
4375 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
4376 hash_table
->num_vfp11_fixes
);
4378 myh
= elf_link_hash_lookup
4379 (&(hash_table
)->root
, tmp_name
, FALSE
, FALSE
, FALSE
);
4386 _bfd_generic_link_add_one_symbol (link_info
, branch_bfd
, tmp_name
, BSF_LOCAL
,
4387 branch_sec
, val
, NULL
, TRUE
, FALSE
, &bh
);
4389 myh
= (struct elf_link_hash_entry
*) bh
;
4390 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
4391 myh
->forced_local
= 1;
4395 /* Generate a mapping symbol for the veneer section, and explicitly add an
4396 entry for that symbol to the code/data map for the section. */
4397 if (hash_table
->vfp11_erratum_glue_size
== 0)
4400 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
4401 ever requires this erratum fix. */
4402 _bfd_generic_link_add_one_symbol (link_info
,
4403 hash_table
->bfd_of_glue_owner
, "$a",
4404 BSF_LOCAL
, s
, 0, NULL
,
4407 myh
= (struct elf_link_hash_entry
*) bh
;
4408 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
4409 myh
->forced_local
= 1;
4411 /* The elf32_arm_init_maps function only cares about symbols from input
4412 BFDs. We must make a note of this generated mapping symbol
4413 ourselves so that code byteswapping works properly in
4414 elf32_arm_write_section. */
4415 elf32_arm_section_map_add (s
, 'a', 0);
4418 s
->size
+= VFP11_ERRATUM_VENEER_SIZE
;
4419 hash_table
->vfp11_erratum_glue_size
+= VFP11_ERRATUM_VENEER_SIZE
;
4420 hash_table
->num_vfp11_fixes
++;
4422 /* The offset of the veneer. */
4426 /* Note: we do not include the flag SEC_LINKER_CREATED, as that
4427 would prevent elf_link_input_bfd() from processing the contents
4429 #define ARM_GLUE_SECTION_FLAGS \
4430 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY)
4432 /* Create a fake section for use by the ARM backend of the linker. */
4435 arm_make_glue_section (bfd
* abfd
, const char * name
)
4439 sec
= bfd_get_section_by_name (abfd
, name
);
4444 sec
= bfd_make_section_with_flags (abfd
, name
, ARM_GLUE_SECTION_FLAGS
);
4447 || !bfd_set_section_alignment (abfd
, sec
, 2))
4450 /* Set the gc mark to prevent the section from being removed by garbage
4451 collection, despite the fact that no relocs refer to this section. */
4457 /* Add the glue sections to ABFD. This function is called from the
4458 linker scripts in ld/emultempl/{armelf}.em. */
4461 bfd_elf32_arm_add_glue_sections_to_bfd (bfd
*abfd
,
4462 struct bfd_link_info
*info
)
4464 /* If we are only performing a partial
4465 link do not bother adding the glue. */
4466 if (info
->relocatable
)
4469 /* Linker stubs don't need glue. */
4470 if (!strcmp (abfd
->filename
, "linker stubs"))
4473 return arm_make_glue_section (abfd
, ARM2THUMB_GLUE_SECTION_NAME
)
4474 && arm_make_glue_section (abfd
, THUMB2ARM_GLUE_SECTION_NAME
)
4475 && arm_make_glue_section (abfd
, VFP11_ERRATUM_VENEER_SECTION_NAME
)
4476 && arm_make_glue_section (abfd
, ARM_BX_GLUE_SECTION_NAME
);
4479 /* Select a BFD to be used to hold the sections used by the glue code.
4480 This function is called from the linker scripts in ld/emultempl/
4484 bfd_elf32_arm_get_bfd_for_interworking (bfd
*abfd
, struct bfd_link_info
*info
)
4486 struct elf32_arm_link_hash_table
*globals
;
4488 /* If we are only performing a partial link
4489 do not bother getting a bfd to hold the glue. */
4490 if (info
->relocatable
)
4493 /* Make sure we don't attach the glue sections to a dynamic object. */
4494 BFD_ASSERT (!(abfd
->flags
& DYNAMIC
));
4496 globals
= elf32_arm_hash_table (info
);
4498 BFD_ASSERT (globals
!= NULL
);
4500 if (globals
->bfd_of_glue_owner
!= NULL
)
4503 /* Save the bfd for later use. */
4504 globals
->bfd_of_glue_owner
= abfd
;
4510 check_use_blx (struct elf32_arm_link_hash_table
*globals
)
4512 if (bfd_elf_get_obj_attr_int (globals
->obfd
, OBJ_ATTR_PROC
,
4514 globals
->use_blx
= 1;
4518 bfd_elf32_arm_process_before_allocation (bfd
*abfd
,
4519 struct bfd_link_info
*link_info
)
4521 Elf_Internal_Shdr
*symtab_hdr
;
4522 Elf_Internal_Rela
*internal_relocs
= NULL
;
4523 Elf_Internal_Rela
*irel
, *irelend
;
4524 bfd_byte
*contents
= NULL
;
4527 struct elf32_arm_link_hash_table
*globals
;
4529 /* If we are only performing a partial link do not bother
4530 to construct any glue. */
4531 if (link_info
->relocatable
)
4534 /* Here we have a bfd that is to be included on the link. We have a
4535 hook to do reloc rummaging, before section sizes are nailed down. */
4536 globals
= elf32_arm_hash_table (link_info
);
4538 BFD_ASSERT (globals
!= NULL
);
4540 check_use_blx (globals
);
4542 if (globals
->byteswap_code
&& !bfd_big_endian (abfd
))
4544 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
4549 /* PR 5398: If we have not decided to include any loadable sections in
4550 the output then we will not have a glue owner bfd. This is OK, it
4551 just means that there is nothing else for us to do here. */
4552 if (globals
->bfd_of_glue_owner
== NULL
)
4555 /* Rummage around all the relocs and map the glue vectors. */
4556 sec
= abfd
->sections
;
4561 for (; sec
!= NULL
; sec
= sec
->next
)
4563 if (sec
->reloc_count
== 0)
4566 if ((sec
->flags
& SEC_EXCLUDE
) != 0)
4569 symtab_hdr
= & elf_symtab_hdr (abfd
);
4571 /* Load the relocs. */
4573 = _bfd_elf_link_read_relocs (abfd
, sec
, NULL
, NULL
, FALSE
);
4575 if (internal_relocs
== NULL
)
4578 irelend
= internal_relocs
+ sec
->reloc_count
;
4579 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
4582 unsigned long r_index
;
4584 struct elf_link_hash_entry
*h
;
4586 r_type
= ELF32_R_TYPE (irel
->r_info
);
4587 r_index
= ELF32_R_SYM (irel
->r_info
);
4589 /* These are the only relocation types we care about. */
4590 if ( r_type
!= R_ARM_PC24
4591 && r_type
!= R_ARM_PLT32
4592 && r_type
!= R_ARM_JUMP24
4593 && r_type
!= R_ARM_THM_JUMP24
4594 && (r_type
!= R_ARM_V4BX
|| globals
->fix_v4bx
< 2))
4597 /* Get the section contents if we haven't done so already. */
4598 if (contents
== NULL
)
4600 /* Get cached copy if it exists. */
4601 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
4602 contents
= elf_section_data (sec
)->this_hdr
.contents
;
4605 /* Go get them off disk. */
4606 if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
4611 if (r_type
== R_ARM_V4BX
)
4615 reg
= bfd_get_32 (abfd
, contents
+ irel
->r_offset
) & 0xf;
4616 record_arm_bx_glue (link_info
, reg
);
4620 /* If the relocation is not against a symbol it cannot concern us. */
4623 /* We don't care about local symbols. */
4624 if (r_index
< symtab_hdr
->sh_info
)
4627 /* This is an external symbol. */
4628 r_index
-= symtab_hdr
->sh_info
;
4629 h
= (struct elf_link_hash_entry
*)
4630 elf_sym_hashes (abfd
)[r_index
];
4632 /* If the relocation is against a static symbol it must be within
4633 the current section and so cannot be a cross ARM/Thumb relocation. */
4637 /* If the call will go through a PLT entry then we do not need
4639 if (globals
->splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
4647 /* This one is a call from arm code. We need to look up
4648 the target of the call. If it is a thumb target, we
4650 if (ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
4651 && !(r_type
== R_ARM_CALL
&& globals
->use_blx
))
4652 record_arm_to_thumb_glue (link_info
, h
);
4655 case R_ARM_THM_JUMP24
:
4656 /* This one is a call from thumb code. We look
4657 up the target of the call. If it is not a thumb
4658 target, we insert glue. */
4659 if (ELF_ST_TYPE (h
->type
) != STT_ARM_TFUNC
4660 && !(globals
->use_blx
&& r_type
== R_ARM_THM_CALL
)
4661 && h
->root
.type
!= bfd_link_hash_undefweak
)
4662 record_thumb_to_arm_glue (link_info
, h
);
4670 if (contents
!= NULL
4671 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
4675 if (internal_relocs
!= NULL
4676 && elf_section_data (sec
)->relocs
!= internal_relocs
)
4677 free (internal_relocs
);
4678 internal_relocs
= NULL
;
4684 if (contents
!= NULL
4685 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
4687 if (internal_relocs
!= NULL
4688 && elf_section_data (sec
)->relocs
!= internal_relocs
)
4689 free (internal_relocs
);
4696 /* Initialise maps of ARM/Thumb/data for input BFDs. */
4699 bfd_elf32_arm_init_maps (bfd
*abfd
)
4701 Elf_Internal_Sym
*isymbuf
;
4702 Elf_Internal_Shdr
*hdr
;
4703 unsigned int i
, localsyms
;
4705 /* PR 7093: Make sure that we are dealing with an arm elf binary. */
4706 if (! is_arm_elf (abfd
))
4709 if ((abfd
->flags
& DYNAMIC
) != 0)
4712 hdr
= & elf_symtab_hdr (abfd
);
4713 localsyms
= hdr
->sh_info
;
4715 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4716 should contain the number of local symbols, which should come before any
4717 global symbols. Mapping symbols are always local. */
4718 isymbuf
= bfd_elf_get_elf_syms (abfd
, hdr
, localsyms
, 0, NULL
, NULL
,
4721 /* No internal symbols read? Skip this BFD. */
4722 if (isymbuf
== NULL
)
4725 for (i
= 0; i
< localsyms
; i
++)
4727 Elf_Internal_Sym
*isym
= &isymbuf
[i
];
4728 asection
*sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
4732 && ELF_ST_BIND (isym
->st_info
) == STB_LOCAL
)
4734 name
= bfd_elf_string_from_elf_section (abfd
,
4735 hdr
->sh_link
, isym
->st_name
);
4737 if (bfd_is_arm_special_symbol_name (name
,
4738 BFD_ARM_SPECIAL_SYM_TYPE_MAP
))
4739 elf32_arm_section_map_add (sec
, name
[1], isym
->st_value
);
4746 bfd_elf32_arm_set_vfp11_fix (bfd
*obfd
, struct bfd_link_info
*link_info
)
4748 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
4749 obj_attribute
*out_attr
= elf_known_obj_attributes_proc (obfd
);
4751 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
4752 if (out_attr
[Tag_CPU_arch
].i
>= TAG_CPU_ARCH_V7
)
4754 switch (globals
->vfp11_fix
)
4756 case BFD_ARM_VFP11_FIX_DEFAULT
:
4757 case BFD_ARM_VFP11_FIX_NONE
:
4758 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
4762 /* Give a warning, but do as the user requests anyway. */
4763 (*_bfd_error_handler
) (_("%B: warning: selected VFP11 erratum "
4764 "workaround is not necessary for target architecture"), obfd
);
4767 else if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_DEFAULT
)
4768 /* For earlier architectures, we might need the workaround, but do not
4769 enable it by default. If users is running with broken hardware, they
4770 must enable the erratum fix explicitly. */
4771 globals
->vfp11_fix
= BFD_ARM_VFP11_FIX_NONE
;
4775 enum bfd_arm_vfp11_pipe
4783 /* Return a VFP register number. This is encoded as RX:X for single-precision
4784 registers, or X:RX for double-precision registers, where RX is the group of
4785 four bits in the instruction encoding and X is the single extension bit.
4786 RX and X fields are specified using their lowest (starting) bit. The return
4789 0...31: single-precision registers s0...s31
4790 32...63: double-precision registers d0...d31.
4792 Although X should be zero for VFP11 (encoding d0...d15 only), we might
4793 encounter VFP3 instructions, so we allow the full range for DP registers. */
4796 bfd_arm_vfp11_regno (unsigned int insn
, bfd_boolean is_double
, unsigned int rx
,
4800 return (((insn
>> rx
) & 0xf) | (((insn
>> x
) & 1) << 4)) + 32;
4802 return (((insn
>> rx
) & 0xf) << 1) | ((insn
>> x
) & 1);
4805 /* Set bits in *WMASK according to a register number REG as encoded by
4806 bfd_arm_vfp11_regno(). Ignore d16-d31. */
4809 bfd_arm_vfp11_write_mask (unsigned int *wmask
, unsigned int reg
)
4814 *wmask
|= 3 << ((reg
- 32) * 2);
4817 /* Return TRUE if WMASK overwrites anything in REGS. */
4820 bfd_arm_vfp11_antidependency (unsigned int wmask
, int *regs
, int numregs
)
4824 for (i
= 0; i
< numregs
; i
++)
4826 unsigned int reg
= regs
[i
];
4828 if (reg
< 32 && (wmask
& (1 << reg
)) != 0)
4836 if ((wmask
& (3 << (reg
* 2))) != 0)
4843 /* In this function, we're interested in two things: finding input registers
4844 for VFP data-processing instructions, and finding the set of registers which
4845 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
4846 hold the written set, so FLDM etc. are easy to deal with (we're only
4847 interested in 32 SP registers or 16 dp registers, due to the VFP version
4848 implemented by the chip in question). DP registers are marked by setting
4849 both SP registers in the write mask). */
4851 static enum bfd_arm_vfp11_pipe
4852 bfd_arm_vfp11_insn_decode (unsigned int insn
, unsigned int *destmask
, int *regs
,
4855 enum bfd_arm_vfp11_pipe pipe
= VFP11_BAD
;
4856 bfd_boolean is_double
= ((insn
& 0xf00) == 0xb00) ? 1 : 0;
4858 if ((insn
& 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
4861 unsigned int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
4862 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
4864 pqrs
= ((insn
& 0x00800000) >> 20)
4865 | ((insn
& 0x00300000) >> 19)
4866 | ((insn
& 0x00000040) >> 6);
4870 case 0: /* fmac[sd]. */
4871 case 1: /* fnmac[sd]. */
4872 case 2: /* fmsc[sd]. */
4873 case 3: /* fnmsc[sd]. */
4875 bfd_arm_vfp11_write_mask (destmask
, fd
);
4877 regs
[1] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
4882 case 4: /* fmul[sd]. */
4883 case 5: /* fnmul[sd]. */
4884 case 6: /* fadd[sd]. */
4885 case 7: /* fsub[sd]. */
4889 case 8: /* fdiv[sd]. */
4892 bfd_arm_vfp11_write_mask (destmask
, fd
);
4893 regs
[0] = bfd_arm_vfp11_regno (insn
, is_double
, 16, 7); /* Fn. */
4898 case 15: /* extended opcode. */
4900 unsigned int extn
= ((insn
>> 15) & 0x1e)
4901 | ((insn
>> 7) & 1);
4905 case 0: /* fcpy[sd]. */
4906 case 1: /* fabs[sd]. */
4907 case 2: /* fneg[sd]. */
4908 case 8: /* fcmp[sd]. */
4909 case 9: /* fcmpe[sd]. */
4910 case 10: /* fcmpz[sd]. */
4911 case 11: /* fcmpez[sd]. */
4912 case 16: /* fuito[sd]. */
4913 case 17: /* fsito[sd]. */
4914 case 24: /* ftoui[sd]. */
4915 case 25: /* ftouiz[sd]. */
4916 case 26: /* ftosi[sd]. */
4917 case 27: /* ftosiz[sd]. */
4918 /* These instructions will not bounce due to underflow. */
4923 case 3: /* fsqrt[sd]. */
4924 /* fsqrt cannot underflow, but it can (perhaps) overwrite
4925 registers to cause the erratum in previous instructions. */
4926 bfd_arm_vfp11_write_mask (destmask
, fd
);
4930 case 15: /* fcvt{ds,sd}. */
4934 bfd_arm_vfp11_write_mask (destmask
, fd
);
4936 /* Only FCVTSD can underflow. */
4937 if ((insn
& 0x100) != 0)
4956 /* Two-register transfer. */
4957 else if ((insn
& 0x0fe00ed0) == 0x0c400a10)
4959 unsigned int fm
= bfd_arm_vfp11_regno (insn
, is_double
, 0, 5);
4961 if ((insn
& 0x100000) == 0)
4964 bfd_arm_vfp11_write_mask (destmask
, fm
);
4967 bfd_arm_vfp11_write_mask (destmask
, fm
);
4968 bfd_arm_vfp11_write_mask (destmask
, fm
+ 1);
4974 else if ((insn
& 0x0e100e00) == 0x0c100a00) /* A load insn. */
4976 int fd
= bfd_arm_vfp11_regno (insn
, is_double
, 12, 22);
4977 unsigned int puw
= ((insn
>> 21) & 0x1) | (((insn
>> 23) & 3) << 1);
4981 case 0: /* Two-reg transfer. We should catch these above. */
4984 case 2: /* fldm[sdx]. */
4988 unsigned int i
, offset
= insn
& 0xff;
4993 for (i
= fd
; i
< fd
+ offset
; i
++)
4994 bfd_arm_vfp11_write_mask (destmask
, i
);
4998 case 4: /* fld[sd]. */
5000 bfd_arm_vfp11_write_mask (destmask
, fd
);
5009 /* Single-register transfer. Note L==0. */
5010 else if ((insn
& 0x0f100e10) == 0x0e000a10)
5012 unsigned int opcode
= (insn
>> 21) & 7;
5013 unsigned int fn
= bfd_arm_vfp11_regno (insn
, is_double
, 16, 7);
5017 case 0: /* fmsr/fmdlr. */
5018 case 1: /* fmdhr. */
5019 /* Mark fmdhr and fmdlr as writing to the whole of the DP
5020 destination register. I don't know if this is exactly right,
5021 but it is the conservative choice. */
5022 bfd_arm_vfp11_write_mask (destmask
, fn
);
5036 static int elf32_arm_compare_mapping (const void * a
, const void * b
);
5039 /* Look for potentially-troublesome code sequences which might trigger the
5040 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
5041 (available from ARM) for details of the erratum. A short version is
5042 described in ld.texinfo. */
5045 bfd_elf32_arm_vfp11_erratum_scan (bfd
*abfd
, struct bfd_link_info
*link_info
)
5048 bfd_byte
*contents
= NULL
;
5050 int regs
[3], numregs
= 0;
5051 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
5052 int use_vector
= (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_VECTOR
);
5054 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
5055 The states transition as follows:
5057 0 -> 1 (vector) or 0 -> 2 (scalar)
5058 A VFP FMAC-pipeline instruction has been seen. Fill
5059 regs[0]..regs[numregs-1] with its input operands. Remember this
5060 instruction in 'first_fmac'.
5063 Any instruction, except for a VFP instruction which overwrites
5068 A VFP instruction has been seen which overwrites any of regs[*].
5069 We must make a veneer! Reset state to 0 before examining next
5073 If we fail to match anything in state 2, reset to state 0 and reset
5074 the instruction pointer to the instruction after 'first_fmac'.
5076 If the VFP11 vector mode is in use, there must be at least two unrelated
5077 instructions between anti-dependent VFP11 instructions to properly avoid
5078 triggering the erratum, hence the use of the extra state 1. */
5080 /* If we are only performing a partial link do not bother
5081 to construct any glue. */
5082 if (link_info
->relocatable
)
5085 /* Skip if this bfd does not correspond to an ELF image. */
5086 if (! is_arm_elf (abfd
))
5089 /* We should have chosen a fix type by the time we get here. */
5090 BFD_ASSERT (globals
->vfp11_fix
!= BFD_ARM_VFP11_FIX_DEFAULT
);
5092 if (globals
->vfp11_fix
== BFD_ARM_VFP11_FIX_NONE
)
5095 /* Skip this BFD if it corresponds to an executable or dynamic object. */
5096 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) != 0)
5099 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5101 unsigned int i
, span
, first_fmac
= 0, veneer_of_insn
= 0;
5102 struct _arm_elf_section_data
*sec_data
;
5104 /* If we don't have executable progbits, we're not interested in this
5105 section. Also skip if section is to be excluded. */
5106 if (elf_section_type (sec
) != SHT_PROGBITS
5107 || (elf_section_flags (sec
) & SHF_EXECINSTR
) == 0
5108 || (sec
->flags
& SEC_EXCLUDE
) != 0
5109 || sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
5110 || sec
->output_section
== bfd_abs_section_ptr
5111 || strcmp (sec
->name
, VFP11_ERRATUM_VENEER_SECTION_NAME
) == 0)
5114 sec_data
= elf32_arm_section_data (sec
);
5116 if (sec_data
->mapcount
== 0)
5119 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
5120 contents
= elf_section_data (sec
)->this_hdr
.contents
;
5121 else if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
5124 qsort (sec_data
->map
, sec_data
->mapcount
, sizeof (elf32_arm_section_map
),
5125 elf32_arm_compare_mapping
);
5127 for (span
= 0; span
< sec_data
->mapcount
; span
++)
5129 unsigned int span_start
= sec_data
->map
[span
].vma
;
5130 unsigned int span_end
= (span
== sec_data
->mapcount
- 1)
5131 ? sec
->size
: sec_data
->map
[span
+ 1].vma
;
5132 char span_type
= sec_data
->map
[span
].type
;
5134 /* FIXME: Only ARM mode is supported at present. We may need to
5135 support Thumb-2 mode also at some point. */
5136 if (span_type
!= 'a')
5139 for (i
= span_start
; i
< span_end
;)
5141 unsigned int next_i
= i
+ 4;
5142 unsigned int insn
= bfd_big_endian (abfd
)
5143 ? (contents
[i
] << 24)
5144 | (contents
[i
+ 1] << 16)
5145 | (contents
[i
+ 2] << 8)
5147 : (contents
[i
+ 3] << 24)
5148 | (contents
[i
+ 2] << 16)
5149 | (contents
[i
+ 1] << 8)
5151 unsigned int writemask
= 0;
5152 enum bfd_arm_vfp11_pipe pipe
;
5157 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
, regs
,
5159 /* I'm assuming the VFP11 erratum can trigger with denorm
5160 operands on either the FMAC or the DS pipeline. This might
5161 lead to slightly overenthusiastic veneer insertion. */
5162 if (pipe
== VFP11_FMAC
|| pipe
== VFP11_DS
)
5164 state
= use_vector
? 1 : 2;
5166 veneer_of_insn
= insn
;
5172 int other_regs
[3], other_numregs
;
5173 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
5176 if (pipe
!= VFP11_BAD
5177 && bfd_arm_vfp11_antidependency (writemask
, regs
,
5187 int other_regs
[3], other_numregs
;
5188 pipe
= bfd_arm_vfp11_insn_decode (insn
, &writemask
,
5191 if (pipe
!= VFP11_BAD
5192 && bfd_arm_vfp11_antidependency (writemask
, regs
,
5198 next_i
= first_fmac
+ 4;
5204 abort (); /* Should be unreachable. */
5209 elf32_vfp11_erratum_list
*newerr
5210 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list
));
5213 errcount
= ++(elf32_arm_section_data (sec
)->erratumcount
);
5215 newerr
->u
.b
.vfp_insn
= veneer_of_insn
;
5220 newerr
->type
= VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
;
5227 record_vfp11_erratum_veneer (link_info
, newerr
, abfd
, sec
,
5232 newerr
->next
= sec_data
->erratumlist
;
5233 sec_data
->erratumlist
= newerr
;
5242 if (contents
!= NULL
5243 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
5251 if (contents
!= NULL
5252 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
5258 /* Find virtual-memory addresses for VFP11 erratum veneers and return locations
5259 after sections have been laid out, using specially-named symbols. */
5262 bfd_elf32_arm_vfp11_fix_veneer_locations (bfd
*abfd
,
5263 struct bfd_link_info
*link_info
)
5266 struct elf32_arm_link_hash_table
*globals
;
5269 if (link_info
->relocatable
)
5272 /* Skip if this bfd does not correspond to an ELF image. */
5273 if (! is_arm_elf (abfd
))
5276 globals
= elf32_arm_hash_table (link_info
);
5278 tmp_name
= bfd_malloc ((bfd_size_type
) strlen
5279 (VFP11_ERRATUM_VENEER_ENTRY_NAME
) + 10);
5281 for (sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5283 struct _arm_elf_section_data
*sec_data
= elf32_arm_section_data (sec
);
5284 elf32_vfp11_erratum_list
*errnode
= sec_data
->erratumlist
;
5286 for (; errnode
!= NULL
; errnode
= errnode
->next
)
5288 struct elf_link_hash_entry
*myh
;
5291 switch (errnode
->type
)
5293 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
5294 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER
:
5295 /* Find veneer symbol. */
5296 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
,
5297 errnode
->u
.b
.veneer
->u
.v
.id
);
5299 myh
= elf_link_hash_lookup
5300 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
5303 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
5304 "`%s'"), abfd
, tmp_name
);
5306 vma
= myh
->root
.u
.def
.section
->output_section
->vma
5307 + myh
->root
.u
.def
.section
->output_offset
5308 + myh
->root
.u
.def
.value
;
5310 errnode
->u
.b
.veneer
->vma
= vma
;
5313 case VFP11_ERRATUM_ARM_VENEER
:
5314 case VFP11_ERRATUM_THUMB_VENEER
:
5315 /* Find return location. */
5316 sprintf (tmp_name
, VFP11_ERRATUM_VENEER_ENTRY_NAME
"_r",
5319 myh
= elf_link_hash_lookup
5320 (&(globals
)->root
, tmp_name
, FALSE
, FALSE
, TRUE
);
5323 (*_bfd_error_handler
) (_("%B: unable to find VFP11 veneer "
5324 "`%s'"), abfd
, tmp_name
);
5326 vma
= myh
->root
.u
.def
.section
->output_section
->vma
5327 + myh
->root
.u
.def
.section
->output_offset
5328 + myh
->root
.u
.def
.value
;
5330 errnode
->u
.v
.branch
->vma
= vma
;
5343 /* Set target relocation values needed during linking. */
5346 bfd_elf32_arm_set_target_relocs (struct bfd
*output_bfd
,
5347 struct bfd_link_info
*link_info
,
5349 char * target2_type
,
5352 bfd_arm_vfp11_fix vfp11_fix
,
5353 int no_enum_warn
, int no_wchar_warn
,
5356 struct elf32_arm_link_hash_table
*globals
;
5358 globals
= elf32_arm_hash_table (link_info
);
5360 globals
->target1_is_rel
= target1_is_rel
;
5361 if (strcmp (target2_type
, "rel") == 0)
5362 globals
->target2_reloc
= R_ARM_REL32
;
5363 else if (strcmp (target2_type
, "abs") == 0)
5364 globals
->target2_reloc
= R_ARM_ABS32
;
5365 else if (strcmp (target2_type
, "got-rel") == 0)
5366 globals
->target2_reloc
= R_ARM_GOT_PREL
;
5369 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
5372 globals
->fix_v4bx
= fix_v4bx
;
5373 globals
->use_blx
|= use_blx
;
5374 globals
->vfp11_fix
= vfp11_fix
;
5375 globals
->pic_veneer
= pic_veneer
;
5377 BFD_ASSERT (is_arm_elf (output_bfd
));
5378 elf_arm_tdata (output_bfd
)->no_enum_size_warning
= no_enum_warn
;
5379 elf_arm_tdata (output_bfd
)->no_wchar_size_warning
= no_wchar_warn
;
5382 /* Replace the target offset of a Thumb bl or b.w instruction. */
5385 insert_thumb_branch (bfd
*abfd
, long int offset
, bfd_byte
*insn
)
5391 BFD_ASSERT ((offset
& 1) == 0);
5393 upper
= bfd_get_16 (abfd
, insn
);
5394 lower
= bfd_get_16 (abfd
, insn
+ 2);
5395 reloc_sign
= (offset
< 0) ? 1 : 0;
5396 upper
= (upper
& ~(bfd_vma
) 0x7ff)
5397 | ((offset
>> 12) & 0x3ff)
5398 | (reloc_sign
<< 10);
5399 lower
= (lower
& ~(bfd_vma
) 0x2fff)
5400 | (((!((offset
>> 23) & 1)) ^ reloc_sign
) << 13)
5401 | (((!((offset
>> 22) & 1)) ^ reloc_sign
) << 11)
5402 | ((offset
>> 1) & 0x7ff);
5403 bfd_put_16 (abfd
, upper
, insn
);
5404 bfd_put_16 (abfd
, lower
, insn
+ 2);
5407 /* Thumb code calling an ARM function. */
5410 elf32_thumb_to_arm_stub (struct bfd_link_info
* info
,
5414 asection
* input_section
,
5415 bfd_byte
* hit_data
,
5418 bfd_signed_vma addend
,
5420 char **error_message
)
5424 long int ret_offset
;
5425 struct elf_link_hash_entry
* myh
;
5426 struct elf32_arm_link_hash_table
* globals
;
5428 myh
= find_thumb_glue (info
, name
, error_message
);
5432 globals
= elf32_arm_hash_table (info
);
5434 BFD_ASSERT (globals
!= NULL
);
5435 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5437 my_offset
= myh
->root
.u
.def
.value
;
5439 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5440 THUMB2ARM_GLUE_SECTION_NAME
);
5442 BFD_ASSERT (s
!= NULL
);
5443 BFD_ASSERT (s
->contents
!= NULL
);
5444 BFD_ASSERT (s
->output_section
!= NULL
);
5446 if ((my_offset
& 0x01) == 0x01)
5449 && sym_sec
->owner
!= NULL
5450 && !INTERWORK_FLAG (sym_sec
->owner
))
5452 (*_bfd_error_handler
)
5453 (_("%B(%s): warning: interworking not enabled.\n"
5454 " first occurrence: %B: thumb call to arm"),
5455 sym_sec
->owner
, input_bfd
, name
);
5461 myh
->root
.u
.def
.value
= my_offset
;
5463 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a1_bx_pc_insn
,
5464 s
->contents
+ my_offset
);
5466 put_thumb_insn (globals
, output_bfd
, (bfd_vma
) t2a2_noop_insn
,
5467 s
->contents
+ my_offset
+ 2);
5470 /* Address of destination of the stub. */
5471 ((bfd_signed_vma
) val
)
5473 /* Offset from the start of the current section
5474 to the start of the stubs. */
5476 /* Offset of the start of this stub from the start of the stubs. */
5478 /* Address of the start of the current section. */
5479 + s
->output_section
->vma
)
5480 /* The branch instruction is 4 bytes into the stub. */
5482 /* ARM branches work from the pc of the instruction + 8. */
5485 put_arm_insn (globals
, output_bfd
,
5486 (bfd_vma
) t2a3_b_insn
| ((ret_offset
>> 2) & 0x00FFFFFF),
5487 s
->contents
+ my_offset
+ 4);
5490 BFD_ASSERT (my_offset
<= globals
->thumb_glue_size
);
5492 /* Now go back and fix up the original BL insn to point to here. */
5494 /* Address of where the stub is located. */
5495 (s
->output_section
->vma
+ s
->output_offset
+ my_offset
)
5496 /* Address of where the BL is located. */
5497 - (input_section
->output_section
->vma
+ input_section
->output_offset
5499 /* Addend in the relocation. */
5501 /* Biassing for PC-relative addressing. */
5504 insert_thumb_branch (input_bfd
, ret_offset
, hit_data
- input_section
->vma
);
5509 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
5511 static struct elf_link_hash_entry
*
5512 elf32_arm_create_thumb_stub (struct bfd_link_info
* info
,
5519 char ** error_message
)
5522 long int ret_offset
;
5523 struct elf_link_hash_entry
* myh
;
5524 struct elf32_arm_link_hash_table
* globals
;
5526 myh
= find_arm_glue (info
, name
, error_message
);
5530 globals
= elf32_arm_hash_table (info
);
5532 BFD_ASSERT (globals
!= NULL
);
5533 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5535 my_offset
= myh
->root
.u
.def
.value
;
5537 if ((my_offset
& 0x01) == 0x01)
5540 && sym_sec
->owner
!= NULL
5541 && !INTERWORK_FLAG (sym_sec
->owner
))
5543 (*_bfd_error_handler
)
5544 (_("%B(%s): warning: interworking not enabled.\n"
5545 " first occurrence: %B: arm call to thumb"),
5546 sym_sec
->owner
, input_bfd
, name
);
5550 myh
->root
.u
.def
.value
= my_offset
;
5552 if (info
->shared
|| globals
->root
.is_relocatable_executable
5553 || globals
->pic_veneer
)
5555 /* For relocatable objects we can't use absolute addresses,
5556 so construct the address from a relative offset. */
5557 /* TODO: If the offset is small it's probably worth
5558 constructing the address with adds. */
5559 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1p_ldr_insn
,
5560 s
->contents
+ my_offset
);
5561 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2p_add_pc_insn
,
5562 s
->contents
+ my_offset
+ 4);
5563 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t3p_bx_r12_insn
,
5564 s
->contents
+ my_offset
+ 8);
5565 /* Adjust the offset by 4 for the position of the add,
5566 and 8 for the pipeline offset. */
5567 ret_offset
= (val
- (s
->output_offset
5568 + s
->output_section
->vma
5571 bfd_put_32 (output_bfd
, ret_offset
,
5572 s
->contents
+ my_offset
+ 12);
5574 else if (globals
->use_blx
)
5576 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1v5_ldr_insn
,
5577 s
->contents
+ my_offset
);
5579 /* It's a thumb address. Add the low order bit. */
5580 bfd_put_32 (output_bfd
, val
| a2t2v5_func_addr_insn
,
5581 s
->contents
+ my_offset
+ 4);
5585 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t1_ldr_insn
,
5586 s
->contents
+ my_offset
);
5588 put_arm_insn (globals
, output_bfd
, (bfd_vma
) a2t2_bx_r12_insn
,
5589 s
->contents
+ my_offset
+ 4);
5591 /* It's a thumb address. Add the low order bit. */
5592 bfd_put_32 (output_bfd
, val
| a2t3_func_addr_insn
,
5593 s
->contents
+ my_offset
+ 8);
5599 BFD_ASSERT (my_offset
<= globals
->arm_glue_size
);
5604 /* Arm code calling a Thumb function. */
5607 elf32_arm_to_thumb_stub (struct bfd_link_info
* info
,
5611 asection
* input_section
,
5612 bfd_byte
* hit_data
,
5615 bfd_signed_vma addend
,
5617 char **error_message
)
5619 unsigned long int tmp
;
5622 long int ret_offset
;
5623 struct elf_link_hash_entry
* myh
;
5624 struct elf32_arm_link_hash_table
* globals
;
5626 globals
= elf32_arm_hash_table (info
);
5628 BFD_ASSERT (globals
!= NULL
);
5629 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5631 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5632 ARM2THUMB_GLUE_SECTION_NAME
);
5633 BFD_ASSERT (s
!= NULL
);
5634 BFD_ASSERT (s
->contents
!= NULL
);
5635 BFD_ASSERT (s
->output_section
!= NULL
);
5637 myh
= elf32_arm_create_thumb_stub (info
, name
, input_bfd
, output_bfd
,
5638 sym_sec
, val
, s
, error_message
);
5642 my_offset
= myh
->root
.u
.def
.value
;
5643 tmp
= bfd_get_32 (input_bfd
, hit_data
);
5644 tmp
= tmp
& 0xFF000000;
5646 /* Somehow these are both 4 too far, so subtract 8. */
5647 ret_offset
= (s
->output_offset
5649 + s
->output_section
->vma
5650 - (input_section
->output_offset
5651 + input_section
->output_section
->vma
5655 tmp
= tmp
| ((ret_offset
>> 2) & 0x00FFFFFF);
5657 bfd_put_32 (output_bfd
, (bfd_vma
) tmp
, hit_data
- input_section
->vma
);
5662 /* Populate Arm stub for an exported Thumb function. */
5665 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry
*h
, void * inf
)
5667 struct bfd_link_info
* info
= (struct bfd_link_info
*) inf
;
5669 struct elf_link_hash_entry
* myh
;
5670 struct elf32_arm_link_hash_entry
*eh
;
5671 struct elf32_arm_link_hash_table
* globals
;
5674 char *error_message
;
5676 eh
= elf32_arm_hash_entry (h
);
5677 /* Allocate stubs for exported Thumb functions on v4t. */
5678 if (eh
->export_glue
== NULL
)
5681 globals
= elf32_arm_hash_table (info
);
5683 BFD_ASSERT (globals
!= NULL
);
5684 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5686 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5687 ARM2THUMB_GLUE_SECTION_NAME
);
5688 BFD_ASSERT (s
!= NULL
);
5689 BFD_ASSERT (s
->contents
!= NULL
);
5690 BFD_ASSERT (s
->output_section
!= NULL
);
5692 sec
= eh
->export_glue
->root
.u
.def
.section
;
5694 BFD_ASSERT (sec
->output_section
!= NULL
);
5696 val
= eh
->export_glue
->root
.u
.def
.value
+ sec
->output_offset
5697 + sec
->output_section
->vma
;
5699 myh
= elf32_arm_create_thumb_stub (info
, h
->root
.root
.string
,
5700 h
->root
.u
.def
.section
->owner
,
5701 globals
->obfd
, sec
, val
, s
,
5707 /* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */
5710 elf32_arm_bx_glue (struct bfd_link_info
* info
, int reg
)
5715 struct elf32_arm_link_hash_table
*globals
;
5717 globals
= elf32_arm_hash_table (info
);
5719 BFD_ASSERT (globals
!= NULL
);
5720 BFD_ASSERT (globals
->bfd_of_glue_owner
!= NULL
);
5722 s
= bfd_get_section_by_name (globals
->bfd_of_glue_owner
,
5723 ARM_BX_GLUE_SECTION_NAME
);
5724 BFD_ASSERT (s
!= NULL
);
5725 BFD_ASSERT (s
->contents
!= NULL
);
5726 BFD_ASSERT (s
->output_section
!= NULL
);
5728 BFD_ASSERT (globals
->bx_glue_offset
[reg
] & 2);
5730 glue_addr
= globals
->bx_glue_offset
[reg
] & ~(bfd_vma
)3;
5732 if ((globals
->bx_glue_offset
[reg
] & 1) == 0)
5734 p
= s
->contents
+ glue_addr
;
5735 bfd_put_32 (globals
->obfd
, armbx1_tst_insn
+ (reg
<< 16), p
);
5736 bfd_put_32 (globals
->obfd
, armbx2_moveq_insn
+ reg
, p
+ 4);
5737 bfd_put_32 (globals
->obfd
, armbx3_bx_insn
+ reg
, p
+ 8);
5738 globals
->bx_glue_offset
[reg
] |= 1;
5741 return glue_addr
+ s
->output_section
->vma
+ s
->output_offset
;
5744 /* Generate Arm stubs for exported Thumb symbols. */
5746 elf32_arm_begin_write_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
5747 struct bfd_link_info
*link_info
)
5749 struct elf32_arm_link_hash_table
* globals
;
5751 if (link_info
== NULL
)
5752 /* Ignore this if we are not called by the ELF backend linker. */
5755 globals
= elf32_arm_hash_table (link_info
);
5756 /* If blx is available then exported Thumb symbols are OK and there is
5758 if (globals
->use_blx
)
5761 elf_link_hash_traverse (&globals
->root
, elf32_arm_to_thumb_export_stub
,
5765 /* Some relocations map to different relocations depending on the
5766 target. Return the real relocation. */
5769 arm_real_reloc_type (struct elf32_arm_link_hash_table
* globals
,
5775 if (globals
->target1_is_rel
)
5781 return globals
->target2_reloc
;
5788 /* Return the base VMA address which should be subtracted from real addresses
5789 when resolving @dtpoff relocation.
5790 This is PT_TLS segment p_vaddr. */
5793 dtpoff_base (struct bfd_link_info
*info
)
5795 /* If tls_sec is NULL, we should have signalled an error already. */
5796 if (elf_hash_table (info
)->tls_sec
== NULL
)
5798 return elf_hash_table (info
)->tls_sec
->vma
;
5801 /* Return the relocation value for @tpoff relocation
5802 if STT_TLS virtual address is ADDRESS. */
5805 tpoff (struct bfd_link_info
*info
, bfd_vma address
)
5807 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
5810 /* If tls_sec is NULL, we should have signalled an error already. */
5811 if (htab
->tls_sec
== NULL
)
5813 base
= align_power ((bfd_vma
) TCB_SIZE
, htab
->tls_sec
->alignment_power
);
5814 return address
- htab
->tls_sec
->vma
+ base
;
5817 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
5818 VALUE is the relocation value. */
5820 static bfd_reloc_status_type
5821 elf32_arm_abs12_reloc (bfd
*abfd
, void *data
, bfd_vma value
)
5824 return bfd_reloc_overflow
;
5826 value
|= bfd_get_32 (abfd
, data
) & 0xfffff000;
5827 bfd_put_32 (abfd
, value
, data
);
5828 return bfd_reloc_ok
;
5831 /* For a given value of n, calculate the value of G_n as required to
5832 deal with group relocations. We return it in the form of an
5833 encoded constant-and-rotation, together with the final residual. If n is
5834 specified as less than zero, then final_residual is filled with the
5835 input value and no further action is performed. */
5838 calculate_group_reloc_mask (bfd_vma value
, int n
, bfd_vma
*final_residual
)
5842 bfd_vma encoded_g_n
= 0;
5843 bfd_vma residual
= value
; /* Also known as Y_n. */
5845 for (current_n
= 0; current_n
<= n
; current_n
++)
5849 /* Calculate which part of the value to mask. */
5856 /* Determine the most significant bit in the residual and
5857 align the resulting value to a 2-bit boundary. */
5858 for (msb
= 30; msb
>= 0; msb
-= 2)
5859 if (residual
& (3 << msb
))
5862 /* The desired shift is now (msb - 6), or zero, whichever
5869 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
5870 g_n
= residual
& (0xff << shift
);
5871 encoded_g_n
= (g_n
>> shift
)
5872 | ((g_n
<= 0xff ? 0 : (32 - shift
) / 2) << 8);
5874 /* Calculate the residual for the next time around. */
5878 *final_residual
= residual
;
5883 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
5884 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
5887 identify_add_or_sub (bfd_vma insn
)
5889 int opcode
= insn
& 0x1e00000;
5891 if (opcode
== 1 << 23) /* ADD */
5894 if (opcode
== 1 << 22) /* SUB */
5900 /* Perform a relocation as part of a final link. */
5902 static bfd_reloc_status_type
5903 elf32_arm_final_link_relocate (reloc_howto_type
* howto
,
5906 asection
* input_section
,
5907 bfd_byte
* contents
,
5908 Elf_Internal_Rela
* rel
,
5910 struct bfd_link_info
* info
,
5912 const char * sym_name
,
5914 struct elf_link_hash_entry
* h
,
5915 bfd_boolean
* unresolved_reloc_p
,
5916 char ** error_message
)
5918 unsigned long r_type
= howto
->type
;
5919 unsigned long r_symndx
;
5920 bfd_byte
* hit_data
= contents
+ rel
->r_offset
;
5921 bfd
* dynobj
= NULL
;
5922 Elf_Internal_Shdr
* symtab_hdr
;
5923 struct elf_link_hash_entry
** sym_hashes
;
5924 bfd_vma
* local_got_offsets
;
5925 asection
* sgot
= NULL
;
5926 asection
* splt
= NULL
;
5927 asection
* sreloc
= NULL
;
5929 bfd_signed_vma signed_addend
;
5930 struct elf32_arm_link_hash_table
* globals
;
5932 globals
= elf32_arm_hash_table (info
);
5934 BFD_ASSERT (is_arm_elf (input_bfd
));
5936 /* Some relocation types map to different relocations depending on the
5937 target. We pick the right one here. */
5938 r_type
= arm_real_reloc_type (globals
, r_type
);
5939 if (r_type
!= howto
->type
)
5940 howto
= elf32_arm_howto_from_type (r_type
);
5942 /* If the start address has been set, then set the EF_ARM_HASENTRY
5943 flag. Setting this more than once is redundant, but the cost is
5944 not too high, and it keeps the code simple.
5946 The test is done here, rather than somewhere else, because the
5947 start address is only set just before the final link commences.
5949 Note - if the user deliberately sets a start address of 0, the
5950 flag will not be set. */
5951 if (bfd_get_start_address (output_bfd
) != 0)
5952 elf_elfheader (output_bfd
)->e_flags
|= EF_ARM_HASENTRY
;
5954 dynobj
= elf_hash_table (info
)->dynobj
;
5957 sgot
= bfd_get_section_by_name (dynobj
, ".got");
5958 splt
= bfd_get_section_by_name (dynobj
, ".plt");
5960 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
5961 sym_hashes
= elf_sym_hashes (input_bfd
);
5962 local_got_offsets
= elf_local_got_offsets (input_bfd
);
5963 r_symndx
= ELF32_R_SYM (rel
->r_info
);
5965 if (globals
->use_rel
)
5967 addend
= bfd_get_32 (input_bfd
, hit_data
) & howto
->src_mask
;
5969 if (addend
& ((howto
->src_mask
+ 1) >> 1))
5972 signed_addend
&= ~ howto
->src_mask
;
5973 signed_addend
|= addend
;
5976 signed_addend
= addend
;
5979 addend
= signed_addend
= rel
->r_addend
;
5984 /* We don't need to find a value for this symbol. It's just a
5986 *unresolved_reloc_p
= FALSE
;
5987 return bfd_reloc_ok
;
5990 if (!globals
->vxworks_p
)
5991 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
5995 case R_ARM_ABS32_NOI
:
5997 case R_ARM_REL32_NOI
:
6003 /* Handle relocations which should use the PLT entry. ABS32/REL32
6004 will use the symbol's value, which may point to a PLT entry, but we
6005 don't need to handle that here. If we created a PLT entry, all
6006 branches in this object should go to it. */
6007 if ((r_type
!= R_ARM_ABS32
&& r_type
!= R_ARM_REL32
6008 && r_type
!= R_ARM_ABS32_NOI
&& r_type
!= R_ARM_REL32_NOI
)
6011 && h
->plt
.offset
!= (bfd_vma
) -1)
6013 /* If we've created a .plt section, and assigned a PLT entry to
6014 this function, it should not be known to bind locally. If
6015 it were, we would have cleared the PLT entry. */
6016 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info
, h
));
6018 value
= (splt
->output_section
->vma
6019 + splt
->output_offset
6021 *unresolved_reloc_p
= FALSE
;
6022 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6023 contents
, rel
->r_offset
, value
,
6027 /* When generating a shared object or relocatable executable, these
6028 relocations are copied into the output file to be resolved at
6030 if ((info
->shared
|| globals
->root
.is_relocatable_executable
)
6031 && (input_section
->flags
& SEC_ALLOC
)
6032 && !(elf32_arm_hash_table (info
)->vxworks_p
6033 && strcmp (input_section
->output_section
->name
,
6035 && ((r_type
!= R_ARM_REL32
&& r_type
!= R_ARM_REL32_NOI
)
6036 || !SYMBOL_CALLS_LOCAL (info
, h
))
6038 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
6039 || h
->root
.type
!= bfd_link_hash_undefweak
)
6040 && r_type
!= R_ARM_PC24
6041 && r_type
!= R_ARM_CALL
6042 && r_type
!= R_ARM_JUMP24
6043 && r_type
!= R_ARM_PREL31
6044 && r_type
!= R_ARM_PLT32
)
6046 Elf_Internal_Rela outrel
;
6048 bfd_boolean skip
, relocate
;
6050 *unresolved_reloc_p
= FALSE
;
6054 sreloc
= _bfd_elf_get_dynamic_reloc_section (input_bfd
, input_section
,
6055 ! globals
->use_rel
);
6058 return bfd_reloc_notsupported
;
6064 outrel
.r_addend
= addend
;
6066 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
6068 if (outrel
.r_offset
== (bfd_vma
) -1)
6070 else if (outrel
.r_offset
== (bfd_vma
) -2)
6071 skip
= TRUE
, relocate
= TRUE
;
6072 outrel
.r_offset
+= (input_section
->output_section
->vma
6073 + input_section
->output_offset
);
6076 memset (&outrel
, 0, sizeof outrel
);
6081 || !h
->def_regular
))
6082 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
6087 /* This symbol is local, or marked to become local. */
6088 if (sym_flags
== STT_ARM_TFUNC
)
6090 if (globals
->symbian_p
)
6094 /* On Symbian OS, the data segment and text segement
6095 can be relocated independently. Therefore, we
6096 must indicate the segment to which this
6097 relocation is relative. The BPABI allows us to
6098 use any symbol in the right segment; we just use
6099 the section symbol as it is convenient. (We
6100 cannot use the symbol given by "h" directly as it
6101 will not appear in the dynamic symbol table.)
6103 Note that the dynamic linker ignores the section
6104 symbol value, so we don't subtract osec->vma
6105 from the emitted reloc addend. */
6107 osec
= sym_sec
->output_section
;
6109 osec
= input_section
->output_section
;
6110 symbol
= elf_section_data (osec
)->dynindx
;
6113 struct elf_link_hash_table
*htab
= elf_hash_table (info
);
6115 if ((osec
->flags
& SEC_READONLY
) == 0
6116 && htab
->data_index_section
!= NULL
)
6117 osec
= htab
->data_index_section
;
6119 osec
= htab
->text_index_section
;
6120 symbol
= elf_section_data (osec
)->dynindx
;
6122 BFD_ASSERT (symbol
!= 0);
6125 /* On SVR4-ish systems, the dynamic loader cannot
6126 relocate the text and data segments independently,
6127 so the symbol does not matter. */
6129 outrel
.r_info
= ELF32_R_INFO (symbol
, R_ARM_RELATIVE
);
6130 if (globals
->use_rel
)
6133 outrel
.r_addend
+= value
;
6136 loc
= sreloc
->contents
;
6137 loc
+= sreloc
->reloc_count
++ * RELOC_SIZE (globals
);
6138 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
6140 /* If this reloc is against an external symbol, we do not want to
6141 fiddle with the addend. Otherwise, we need to include the symbol
6142 value so that it becomes an addend for the dynamic reloc. */
6144 return bfd_reloc_ok
;
6146 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6147 contents
, rel
->r_offset
, value
,
6150 else switch (r_type
)
6153 return elf32_arm_abs12_reloc (input_bfd
, hit_data
, value
+ addend
);
6155 case R_ARM_XPC25
: /* Arm BLX instruction. */
6158 case R_ARM_PC24
: /* Arm B/BL instruction. */
6162 bfd_signed_vma branch_offset
;
6163 struct elf32_arm_stub_hash_entry
*stub_entry
= NULL
;
6165 from
= (input_section
->output_section
->vma
6166 + input_section
->output_offset
6168 branch_offset
= (bfd_signed_vma
)(value
- from
);
6170 if (r_type
== R_ARM_XPC25
)
6172 /* Check for Arm calling Arm function. */
6173 /* FIXME: Should we translate the instruction into a BL
6174 instruction instead ? */
6175 if (sym_flags
!= STT_ARM_TFUNC
)
6176 (*_bfd_error_handler
)
6177 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
6179 h
? h
->root
.root
.string
: "(local)");
6181 else if (r_type
!= R_ARM_CALL
)
6183 /* Check for Arm calling Thumb function. */
6184 if (sym_flags
== STT_ARM_TFUNC
)
6186 if (elf32_arm_to_thumb_stub (info
, sym_name
, input_bfd
,
6187 output_bfd
, input_section
,
6188 hit_data
, sym_sec
, rel
->r_offset
,
6189 signed_addend
, value
,
6191 return bfd_reloc_ok
;
6193 return bfd_reloc_dangerous
;
6197 /* Check if a stub has to be inserted because the
6198 destination is too far or we are changing mode. */
6199 if (r_type
== R_ARM_CALL
)
6201 if (branch_offset
> ARM_MAX_FWD_BRANCH_OFFSET
6202 || branch_offset
< ARM_MAX_BWD_BRANCH_OFFSET
6203 || sym_flags
== STT_ARM_TFUNC
)
6205 /* The target is out of reach, so redirect the
6206 branch to the local stub for this function. */
6208 stub_entry
= elf32_arm_get_stub_entry (input_section
,
6211 if (stub_entry
!= NULL
)
6212 value
= (stub_entry
->stub_offset
6213 + stub_entry
->stub_sec
->output_offset
6214 + stub_entry
->stub_sec
->output_section
->vma
);
6218 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
6220 S is the address of the symbol in the relocation.
6221 P is address of the instruction being relocated.
6222 A is the addend (extracted from the instruction) in bytes.
6224 S is held in 'value'.
6225 P is the base address of the section containing the
6226 instruction plus the offset of the reloc into that
6228 (input_section->output_section->vma +
6229 input_section->output_offset +
6231 A is the addend, converted into bytes, ie:
6234 Note: None of these operations have knowledge of the pipeline
6235 size of the processor, thus it is up to the assembler to
6236 encode this information into the addend. */
6237 value
-= (input_section
->output_section
->vma
6238 + input_section
->output_offset
);
6239 value
-= rel
->r_offset
;
6240 if (globals
->use_rel
)
6241 value
+= (signed_addend
<< howto
->size
);
6243 /* RELA addends do not have to be adjusted by howto->size. */
6244 value
+= signed_addend
;
6246 signed_addend
= value
;
6247 signed_addend
>>= howto
->rightshift
;
6249 /* A branch to an undefined weak symbol is turned into a jump to
6250 the next instruction. */
6251 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
)
6253 value
= (bfd_get_32 (input_bfd
, hit_data
) & 0xf0000000)
6258 /* Perform a signed range check. */
6259 if ( signed_addend
> ((bfd_signed_vma
) (howto
->dst_mask
>> 1))
6260 || signed_addend
< - ((bfd_signed_vma
) ((howto
->dst_mask
+ 1) >> 1)))
6261 return bfd_reloc_overflow
;
6263 addend
= (value
& 2);
6265 value
= (signed_addend
& howto
->dst_mask
)
6266 | (bfd_get_32 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
6268 /* Set the H bit in the BLX instruction. */
6269 if (sym_flags
== STT_ARM_TFUNC
)
6274 value
&= ~(bfd_vma
)(1 << 24);
6276 if (r_type
== R_ARM_CALL
)
6278 /* Select the correct instruction (BL or BLX). */
6279 /* Only if we are not handling a BL to a stub. In this
6280 case, mode switching is performed by the stub. */
6281 if (sym_flags
== STT_ARM_TFUNC
&& !stub_entry
)
6285 value
&= ~(bfd_vma
)(1 << 28);
6295 if (sym_flags
== STT_ARM_TFUNC
)
6299 case R_ARM_ABS32_NOI
:
6305 if (sym_flags
== STT_ARM_TFUNC
)
6307 value
-= (input_section
->output_section
->vma
6308 + input_section
->output_offset
+ rel
->r_offset
);
6311 case R_ARM_REL32_NOI
:
6313 value
-= (input_section
->output_section
->vma
6314 + input_section
->output_offset
+ rel
->r_offset
);
6318 value
-= (input_section
->output_section
->vma
6319 + input_section
->output_offset
+ rel
->r_offset
);
6320 value
+= signed_addend
;
6321 if (! h
|| h
->root
.type
!= bfd_link_hash_undefweak
)
6323 /* Check for overflow. */
6324 if ((value
^ (value
>> 1)) & (1 << 30))
6325 return bfd_reloc_overflow
;
6327 value
&= 0x7fffffff;
6328 value
|= (bfd_get_32 (input_bfd
, hit_data
) & 0x80000000);
6329 if (sym_flags
== STT_ARM_TFUNC
)
6334 bfd_put_32 (input_bfd
, value
, hit_data
);
6335 return bfd_reloc_ok
;
6339 if ((long) value
> 0x7f || (long) value
< -0x80)
6340 return bfd_reloc_overflow
;
6342 bfd_put_8 (input_bfd
, value
, hit_data
);
6343 return bfd_reloc_ok
;
6348 if ((long) value
> 0x7fff || (long) value
< -0x8000)
6349 return bfd_reloc_overflow
;
6351 bfd_put_16 (input_bfd
, value
, hit_data
);
6352 return bfd_reloc_ok
;
6354 case R_ARM_THM_ABS5
:
6355 /* Support ldr and str instructions for the thumb. */
6356 if (globals
->use_rel
)
6358 /* Need to refetch addend. */
6359 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
6360 /* ??? Need to determine shift amount from operand size. */
6361 addend
>>= howto
->rightshift
;
6365 /* ??? Isn't value unsigned? */
6366 if ((long) value
> 0x1f || (long) value
< -0x10)
6367 return bfd_reloc_overflow
;
6369 /* ??? Value needs to be properly shifted into place first. */
6370 value
|= bfd_get_16 (input_bfd
, hit_data
) & 0xf83f;
6371 bfd_put_16 (input_bfd
, value
, hit_data
);
6372 return bfd_reloc_ok
;
6374 case R_ARM_THM_ALU_PREL_11_0
:
6375 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
6378 bfd_signed_vma relocation
;
6380 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
6381 | bfd_get_16 (input_bfd
, hit_data
+ 2);
6383 if (globals
->use_rel
)
6385 signed_addend
= (insn
& 0xff) | ((insn
& 0x7000) >> 4)
6386 | ((insn
& (1 << 26)) >> 15);
6387 if (insn
& 0xf00000)
6388 signed_addend
= -signed_addend
;
6391 relocation
= value
+ signed_addend
;
6392 relocation
-= (input_section
->output_section
->vma
6393 + input_section
->output_offset
6396 value
= abs (relocation
);
6398 if (value
>= 0x1000)
6399 return bfd_reloc_overflow
;
6401 insn
= (insn
& 0xfb0f8f00) | (value
& 0xff)
6402 | ((value
& 0x700) << 4)
6403 | ((value
& 0x800) << 15);
6407 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
6408 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
6410 return bfd_reloc_ok
;
6413 case R_ARM_THM_PC12
:
6414 /* Corresponds to: ldr.w reg, [pc, #offset]. */
6417 bfd_signed_vma relocation
;
6419 insn
= (bfd_get_16 (input_bfd
, hit_data
) << 16)
6420 | bfd_get_16 (input_bfd
, hit_data
+ 2);
6422 if (globals
->use_rel
)
6424 signed_addend
= insn
& 0xfff;
6425 if (!(insn
& (1 << 23)))
6426 signed_addend
= -signed_addend
;
6429 relocation
= value
+ signed_addend
;
6430 relocation
-= (input_section
->output_section
->vma
6431 + input_section
->output_offset
6434 value
= abs (relocation
);
6436 if (value
>= 0x1000)
6437 return bfd_reloc_overflow
;
6439 insn
= (insn
& 0xff7ff000) | value
;
6440 if (relocation
>= 0)
6443 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
6444 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
6446 return bfd_reloc_ok
;
6449 case R_ARM_THM_XPC22
:
6450 case R_ARM_THM_CALL
:
6451 case R_ARM_THM_JUMP24
:
6452 /* Thumb BL (branch long instruction). */
6456 bfd_boolean overflow
= FALSE
;
6457 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
6458 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
6459 bfd_signed_vma reloc_signed_max
;
6460 bfd_signed_vma reloc_signed_min
;
6462 bfd_signed_vma signed_check
;
6464 int thumb2
= using_thumb2 (globals
);
6466 /* A branch to an undefined weak symbol is turned into a jump to
6467 the next instruction unless a PLT entry will be created. */
6468 if (h
&& h
->root
.type
== bfd_link_hash_undefweak
6469 && !(splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1))
6471 bfd_put_16 (input_bfd
, 0xe000, hit_data
);
6472 bfd_put_16 (input_bfd
, 0xbf00, hit_data
+ 2);
6473 return bfd_reloc_ok
;
6476 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
6477 with Thumb-1) involving the J1 and J2 bits. */
6478 if (globals
->use_rel
)
6480 bfd_vma s
= (upper_insn
& (1 << 10)) >> 10;
6481 bfd_vma upper
= upper_insn
& 0x3ff;
6482 bfd_vma lower
= lower_insn
& 0x7ff;
6483 bfd_vma j1
= (lower_insn
& (1 << 13)) >> 13;
6484 bfd_vma j2
= (lower_insn
& (1 << 11)) >> 11;
6485 bfd_vma i1
= j1
^ s
? 0 : 1;
6486 bfd_vma i2
= j2
^ s
? 0 : 1;
6488 addend
= (i1
<< 23) | (i2
<< 22) | (upper
<< 12) | (lower
<< 1);
6490 addend
= (addend
| ((s
? 0 : 1) << 24)) - (1 << 24);
6492 signed_addend
= addend
;
6495 if (r_type
== R_ARM_THM_XPC22
)
6497 /* Check for Thumb to Thumb call. */
6498 /* FIXME: Should we translate the instruction into a BL
6499 instruction instead ? */
6500 if (sym_flags
== STT_ARM_TFUNC
)
6501 (*_bfd_error_handler
)
6502 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
6504 h
? h
->root
.root
.string
: "(local)");
6508 /* If it is not a call to Thumb, assume call to Arm.
6509 If it is a call relative to a section name, then it is not a
6510 function call at all, but rather a long jump. Calls through
6511 the PLT do not require stubs. */
6512 if (sym_flags
!= STT_ARM_TFUNC
&& sym_flags
!= STT_SECTION
6513 && (h
== NULL
|| splt
== NULL
6514 || h
->plt
.offset
== (bfd_vma
) -1))
6516 if (globals
->use_blx
&& r_type
== R_ARM_THM_CALL
)
6518 /* Convert BL to BLX. */
6519 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
6521 else if (r_type
!= R_ARM_THM_CALL
)
6523 if (elf32_thumb_to_arm_stub
6524 (info
, sym_name
, input_bfd
, output_bfd
, input_section
,
6525 hit_data
, sym_sec
, rel
->r_offset
, signed_addend
, value
,
6527 return bfd_reloc_ok
;
6529 return bfd_reloc_dangerous
;
6532 else if (sym_flags
== STT_ARM_TFUNC
&& globals
->use_blx
6533 && r_type
== R_ARM_THM_CALL
)
6535 /* Make sure this is a BL. */
6536 lower_insn
|= 0x1800;
6540 /* Handle calls via the PLT. */
6541 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
6543 value
= (splt
->output_section
->vma
6544 + splt
->output_offset
6546 if (globals
->use_blx
&& r_type
== R_ARM_THM_CALL
)
6548 /* If the Thumb BLX instruction is available, convert the
6549 BL to a BLX instruction to call the ARM-mode PLT entry. */
6550 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
6553 /* Target the Thumb stub before the ARM PLT entry. */
6554 value
-= PLT_THUMB_STUB_SIZE
;
6555 *unresolved_reloc_p
= FALSE
;
6558 if (r_type
== R_ARM_THM_CALL
)
6560 /* Check if a stub has to be inserted because the destination
6563 bfd_signed_vma branch_offset
;
6564 struct elf32_arm_stub_hash_entry
*stub_entry
= NULL
;
6566 from
= (input_section
->output_section
->vma
6567 + input_section
->output_offset
6569 branch_offset
= (bfd_signed_vma
)(value
- from
);
6572 && (branch_offset
> THM_MAX_FWD_BRANCH_OFFSET
6573 || (branch_offset
< THM_MAX_BWD_BRANCH_OFFSET
)))
6576 && (branch_offset
> THM2_MAX_FWD_BRANCH_OFFSET
6577 || (branch_offset
< THM2_MAX_BWD_BRANCH_OFFSET
)))
6578 || ((sym_flags
!= STT_ARM_TFUNC
) && !globals
->use_blx
))
6580 /* The target is out of reach or we are changing modes, so
6581 redirect the branch to the local stub for this
6583 stub_entry
= elf32_arm_get_stub_entry (input_section
,
6586 if (stub_entry
!= NULL
)
6587 value
= (stub_entry
->stub_offset
6588 + stub_entry
->stub_sec
->output_offset
6589 + stub_entry
->stub_sec
->output_section
->vma
);
6591 /* If this call becomes a call to Arm, force BLX. */
6592 if (globals
->use_blx
)
6595 && !arm_stub_is_thumb (stub_entry
->stub_type
))
6596 || (sym_flags
!= STT_ARM_TFUNC
))
6597 lower_insn
= (lower_insn
& ~0x1000) | 0x0800;
6602 relocation
= value
+ signed_addend
;
6604 relocation
-= (input_section
->output_section
->vma
6605 + input_section
->output_offset
6608 check
= relocation
>> howto
->rightshift
;
6610 /* If this is a signed value, the rightshift just dropped
6611 leading 1 bits (assuming twos complement). */
6612 if ((bfd_signed_vma
) relocation
>= 0)
6613 signed_check
= check
;
6615 signed_check
= check
| ~((bfd_vma
) -1 >> howto
->rightshift
);
6617 /* Calculate the permissable maximum and minimum values for
6618 this relocation according to whether we're relocating for
6620 bitsize
= howto
->bitsize
;
6623 reloc_signed_max
= ((1 << (bitsize
- 1)) - 1) >> howto
->rightshift
;
6624 reloc_signed_min
= ~reloc_signed_max
;
6626 /* Assumes two's complement. */
6627 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
6630 if ((lower_insn
& 0x5000) == 0x4000)
6631 /* For a BLX instruction, make sure that the relocation is rounded up
6632 to a word boundary. This follows the semantics of the instruction
6633 which specifies that bit 1 of the target address will come from bit
6634 1 of the base address. */
6635 relocation
= (relocation
+ 2) & ~ 3;
6637 /* Put RELOCATION back into the insn. Assumes two's complement.
6638 We use the Thumb-2 encoding, which is safe even if dealing with
6639 a Thumb-1 instruction by virtue of our overflow check above. */
6640 reloc_sign
= (signed_check
< 0) ? 1 : 0;
6641 upper_insn
= (upper_insn
& ~(bfd_vma
) 0x7ff)
6642 | ((relocation
>> 12) & 0x3ff)
6643 | (reloc_sign
<< 10);
6644 lower_insn
= (lower_insn
& ~(bfd_vma
) 0x2fff)
6645 | (((!((relocation
>> 23) & 1)) ^ reloc_sign
) << 13)
6646 | (((!((relocation
>> 22) & 1)) ^ reloc_sign
) << 11)
6647 | ((relocation
>> 1) & 0x7ff);
6649 /* Put the relocated value back in the object file: */
6650 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
6651 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
6653 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
6657 case R_ARM_THM_JUMP19
:
6658 /* Thumb32 conditional branch instruction. */
6661 bfd_boolean overflow
= FALSE
;
6662 bfd_vma upper_insn
= bfd_get_16 (input_bfd
, hit_data
);
6663 bfd_vma lower_insn
= bfd_get_16 (input_bfd
, hit_data
+ 2);
6664 bfd_signed_vma reloc_signed_max
= 0xffffe;
6665 bfd_signed_vma reloc_signed_min
= -0x100000;
6666 bfd_signed_vma signed_check
;
6668 /* Need to refetch the addend, reconstruct the top three bits,
6669 and squish the two 11 bit pieces together. */
6670 if (globals
->use_rel
)
6672 bfd_vma S
= (upper_insn
& 0x0400) >> 10;
6673 bfd_vma upper
= (upper_insn
& 0x003f);
6674 bfd_vma J1
= (lower_insn
& 0x2000) >> 13;
6675 bfd_vma J2
= (lower_insn
& 0x0800) >> 11;
6676 bfd_vma lower
= (lower_insn
& 0x07ff);
6681 upper
-= 0x0100; /* Sign extend. */
6683 addend
= (upper
<< 12) | (lower
<< 1);
6684 signed_addend
= addend
;
6687 /* Handle calls via the PLT. */
6688 if (h
!= NULL
&& splt
!= NULL
&& h
->plt
.offset
!= (bfd_vma
) -1)
6690 value
= (splt
->output_section
->vma
6691 + splt
->output_offset
6693 /* Target the Thumb stub before the ARM PLT entry. */
6694 value
-= PLT_THUMB_STUB_SIZE
;
6695 *unresolved_reloc_p
= FALSE
;
6698 /* ??? Should handle interworking? GCC might someday try to
6699 use this for tail calls. */
6701 relocation
= value
+ signed_addend
;
6702 relocation
-= (input_section
->output_section
->vma
6703 + input_section
->output_offset
6705 signed_check
= (bfd_signed_vma
) relocation
;
6707 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
6710 /* Put RELOCATION back into the insn. */
6712 bfd_vma S
= (relocation
& 0x00100000) >> 20;
6713 bfd_vma J2
= (relocation
& 0x00080000) >> 19;
6714 bfd_vma J1
= (relocation
& 0x00040000) >> 18;
6715 bfd_vma hi
= (relocation
& 0x0003f000) >> 12;
6716 bfd_vma lo
= (relocation
& 0x00000ffe) >> 1;
6718 upper_insn
= (upper_insn
& 0xfbc0) | (S
<< 10) | hi
;
6719 lower_insn
= (lower_insn
& 0xd000) | (J1
<< 13) | (J2
<< 11) | lo
;
6722 /* Put the relocated value back in the object file: */
6723 bfd_put_16 (input_bfd
, upper_insn
, hit_data
);
6724 bfd_put_16 (input_bfd
, lower_insn
, hit_data
+ 2);
6726 return (overflow
? bfd_reloc_overflow
: bfd_reloc_ok
);
6729 case R_ARM_THM_JUMP11
:
6730 case R_ARM_THM_JUMP8
:
6731 case R_ARM_THM_JUMP6
:
6732 /* Thumb B (branch) instruction). */
6734 bfd_signed_vma relocation
;
6735 bfd_signed_vma reloc_signed_max
= (1 << (howto
->bitsize
- 1)) - 1;
6736 bfd_signed_vma reloc_signed_min
= ~ reloc_signed_max
;
6737 bfd_signed_vma signed_check
;
6739 /* CZB cannot jump backward. */
6740 if (r_type
== R_ARM_THM_JUMP6
)
6741 reloc_signed_min
= 0;
6743 if (globals
->use_rel
)
6745 /* Need to refetch addend. */
6746 addend
= bfd_get_16 (input_bfd
, hit_data
) & howto
->src_mask
;
6747 if (addend
& ((howto
->src_mask
+ 1) >> 1))
6750 signed_addend
&= ~ howto
->src_mask
;
6751 signed_addend
|= addend
;
6754 signed_addend
= addend
;
6755 /* The value in the insn has been right shifted. We need to
6756 undo this, so that we can perform the address calculation
6757 in terms of bytes. */
6758 signed_addend
<<= howto
->rightshift
;
6760 relocation
= value
+ signed_addend
;
6762 relocation
-= (input_section
->output_section
->vma
6763 + input_section
->output_offset
6766 relocation
>>= howto
->rightshift
;
6767 signed_check
= relocation
;
6769 if (r_type
== R_ARM_THM_JUMP6
)
6770 relocation
= ((relocation
& 0x0020) << 4) | ((relocation
& 0x001f) << 3);
6772 relocation
&= howto
->dst_mask
;
6773 relocation
|= (bfd_get_16 (input_bfd
, hit_data
) & (~ howto
->dst_mask
));
6775 bfd_put_16 (input_bfd
, relocation
, hit_data
);
6777 /* Assumes two's complement. */
6778 if (signed_check
> reloc_signed_max
|| signed_check
< reloc_signed_min
)
6779 return bfd_reloc_overflow
;
6781 return bfd_reloc_ok
;
6784 case R_ARM_ALU_PCREL7_0
:
6785 case R_ARM_ALU_PCREL15_8
:
6786 case R_ARM_ALU_PCREL23_15
:
6791 insn
= bfd_get_32 (input_bfd
, hit_data
);
6792 if (globals
->use_rel
)
6794 /* Extract the addend. */
6795 addend
= (insn
& 0xff) << ((insn
& 0xf00) >> 7);
6796 signed_addend
= addend
;
6798 relocation
= value
+ signed_addend
;
6800 relocation
-= (input_section
->output_section
->vma
6801 + input_section
->output_offset
6803 insn
= (insn
& ~0xfff)
6804 | ((howto
->bitpos
<< 7) & 0xf00)
6805 | ((relocation
>> howto
->bitpos
) & 0xff);
6806 bfd_put_32 (input_bfd
, value
, hit_data
);
6808 return bfd_reloc_ok
;
6810 case R_ARM_GNU_VTINHERIT
:
6811 case R_ARM_GNU_VTENTRY
:
6812 return bfd_reloc_ok
;
6814 case R_ARM_GOTOFF32
:
6815 /* Relocation is relative to the start of the
6816 global offset table. */
6818 BFD_ASSERT (sgot
!= NULL
);
6820 return bfd_reloc_notsupported
;
6822 /* If we are addressing a Thumb function, we need to adjust the
6823 address by one, so that attempts to call the function pointer will
6824 correctly interpret it as Thumb code. */
6825 if (sym_flags
== STT_ARM_TFUNC
)
6828 /* Note that sgot->output_offset is not involved in this
6829 calculation. We always want the start of .got. If we
6830 define _GLOBAL_OFFSET_TABLE in a different way, as is
6831 permitted by the ABI, we might have to change this
6833 value
-= sgot
->output_section
->vma
;
6834 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6835 contents
, rel
->r_offset
, value
,
6839 /* Use global offset table as symbol value. */
6840 BFD_ASSERT (sgot
!= NULL
);
6843 return bfd_reloc_notsupported
;
6845 *unresolved_reloc_p
= FALSE
;
6846 value
= sgot
->output_section
->vma
;
6847 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6848 contents
, rel
->r_offset
, value
,
6852 case R_ARM_GOT_PREL
:
6853 /* Relocation is to the entry for this symbol in the
6854 global offset table. */
6856 return bfd_reloc_notsupported
;
6863 off
= h
->got
.offset
;
6864 BFD_ASSERT (off
!= (bfd_vma
) -1);
6865 dyn
= globals
->root
.dynamic_sections_created
;
6867 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
6869 && SYMBOL_REFERENCES_LOCAL (info
, h
))
6870 || (ELF_ST_VISIBILITY (h
->other
)
6871 && h
->root
.type
== bfd_link_hash_undefweak
))
6873 /* This is actually a static link, or it is a -Bsymbolic link
6874 and the symbol is defined locally. We must initialize this
6875 entry in the global offset table. Since the offset must
6876 always be a multiple of 4, we use the least significant bit
6877 to record whether we have initialized it already.
6879 When doing a dynamic link, we create a .rel(a).got relocation
6880 entry to initialize the value. This is done in the
6881 finish_dynamic_symbol routine. */
6886 /* If we are addressing a Thumb function, we need to
6887 adjust the address by one, so that attempts to
6888 call the function pointer will correctly
6889 interpret it as Thumb code. */
6890 if (sym_flags
== STT_ARM_TFUNC
)
6893 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
6898 *unresolved_reloc_p
= FALSE
;
6900 value
= sgot
->output_offset
+ off
;
6906 BFD_ASSERT (local_got_offsets
!= NULL
&&
6907 local_got_offsets
[r_symndx
] != (bfd_vma
) -1);
6909 off
= local_got_offsets
[r_symndx
];
6911 /* The offset must always be a multiple of 4. We use the
6912 least significant bit to record whether we have already
6913 generated the necessary reloc. */
6918 /* If we are addressing a Thumb function, we need to
6919 adjust the address by one, so that attempts to
6920 call the function pointer will correctly
6921 interpret it as Thumb code. */
6922 if (sym_flags
== STT_ARM_TFUNC
)
6925 if (globals
->use_rel
)
6926 bfd_put_32 (output_bfd
, value
, sgot
->contents
+ off
);
6931 Elf_Internal_Rela outrel
;
6934 srelgot
= (bfd_get_section_by_name
6935 (dynobj
, RELOC_SECTION (globals
, ".got")));
6936 BFD_ASSERT (srelgot
!= NULL
);
6938 outrel
.r_addend
= addend
+ value
;
6939 outrel
.r_offset
= (sgot
->output_section
->vma
6940 + sgot
->output_offset
6942 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
6943 loc
= srelgot
->contents
;
6944 loc
+= srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
6945 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
6948 local_got_offsets
[r_symndx
] |= 1;
6951 value
= sgot
->output_offset
+ off
;
6953 if (r_type
!= R_ARM_GOT32
)
6954 value
+= sgot
->output_section
->vma
;
6956 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6957 contents
, rel
->r_offset
, value
,
6960 case R_ARM_TLS_LDO32
:
6961 value
= value
- dtpoff_base (info
);
6963 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
6964 contents
, rel
->r_offset
, value
,
6967 case R_ARM_TLS_LDM32
:
6971 if (globals
->sgot
== NULL
)
6974 off
= globals
->tls_ldm_got
.offset
;
6980 /* If we don't know the module number, create a relocation
6984 Elf_Internal_Rela outrel
;
6987 if (globals
->srelgot
== NULL
)
6990 outrel
.r_addend
= 0;
6991 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
6992 + globals
->sgot
->output_offset
+ off
);
6993 outrel
.r_info
= ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32
);
6995 if (globals
->use_rel
)
6996 bfd_put_32 (output_bfd
, outrel
.r_addend
,
6997 globals
->sgot
->contents
+ off
);
6999 loc
= globals
->srelgot
->contents
;
7000 loc
+= globals
->srelgot
->reloc_count
++ * RELOC_SIZE (globals
);
7001 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
7004 bfd_put_32 (output_bfd
, 1, globals
->sgot
->contents
+ off
);
7006 globals
->tls_ldm_got
.offset
|= 1;
7009 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
7010 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
7012 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
7013 contents
, rel
->r_offset
, value
,
7017 case R_ARM_TLS_GD32
:
7018 case R_ARM_TLS_IE32
:
7024 if (globals
->sgot
== NULL
)
7031 dyn
= globals
->root
.dynamic_sections_created
;
7032 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
7034 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
7036 *unresolved_reloc_p
= FALSE
;
7039 off
= h
->got
.offset
;
7040 tls_type
= ((struct elf32_arm_link_hash_entry
*) h
)->tls_type
;
7044 if (local_got_offsets
== NULL
)
7046 off
= local_got_offsets
[r_symndx
];
7047 tls_type
= elf32_arm_local_got_tls_type (input_bfd
)[r_symndx
];
7050 if (tls_type
== GOT_UNKNOWN
)
7057 bfd_boolean need_relocs
= FALSE
;
7058 Elf_Internal_Rela outrel
;
7059 bfd_byte
*loc
= NULL
;
7062 /* The GOT entries have not been initialized yet. Do it
7063 now, and emit any relocations. If both an IE GOT and a
7064 GD GOT are necessary, we emit the GD first. */
7066 if ((info
->shared
|| indx
!= 0)
7068 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7069 || h
->root
.type
!= bfd_link_hash_undefweak
))
7072 if (globals
->srelgot
== NULL
)
7074 loc
= globals
->srelgot
->contents
;
7075 loc
+= globals
->srelgot
->reloc_count
* RELOC_SIZE (globals
);
7078 if (tls_type
& GOT_TLS_GD
)
7082 outrel
.r_addend
= 0;
7083 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
7084 + globals
->sgot
->output_offset
7086 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_DTPMOD32
);
7088 if (globals
->use_rel
)
7089 bfd_put_32 (output_bfd
, outrel
.r_addend
,
7090 globals
->sgot
->contents
+ cur_off
);
7092 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
7093 globals
->srelgot
->reloc_count
++;
7094 loc
+= RELOC_SIZE (globals
);
7097 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
7098 globals
->sgot
->contents
+ cur_off
+ 4);
7101 outrel
.r_addend
= 0;
7102 outrel
.r_info
= ELF32_R_INFO (indx
,
7103 R_ARM_TLS_DTPOFF32
);
7104 outrel
.r_offset
+= 4;
7106 if (globals
->use_rel
)
7107 bfd_put_32 (output_bfd
, outrel
.r_addend
,
7108 globals
->sgot
->contents
+ cur_off
+ 4);
7111 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
7112 globals
->srelgot
->reloc_count
++;
7113 loc
+= RELOC_SIZE (globals
);
7118 /* If we are not emitting relocations for a
7119 general dynamic reference, then we must be in a
7120 static link or an executable link with the
7121 symbol binding locally. Mark it as belonging
7122 to module 1, the executable. */
7123 bfd_put_32 (output_bfd
, 1,
7124 globals
->sgot
->contents
+ cur_off
);
7125 bfd_put_32 (output_bfd
, value
- dtpoff_base (info
),
7126 globals
->sgot
->contents
+ cur_off
+ 4);
7132 if (tls_type
& GOT_TLS_IE
)
7137 outrel
.r_addend
= value
- dtpoff_base (info
);
7139 outrel
.r_addend
= 0;
7140 outrel
.r_offset
= (globals
->sgot
->output_section
->vma
7141 + globals
->sgot
->output_offset
7143 outrel
.r_info
= ELF32_R_INFO (indx
, R_ARM_TLS_TPOFF32
);
7145 if (globals
->use_rel
)
7146 bfd_put_32 (output_bfd
, outrel
.r_addend
,
7147 globals
->sgot
->contents
+ cur_off
);
7149 SWAP_RELOC_OUT (globals
) (output_bfd
, &outrel
, loc
);
7150 globals
->srelgot
->reloc_count
++;
7151 loc
+= RELOC_SIZE (globals
);
7154 bfd_put_32 (output_bfd
, tpoff (info
, value
),
7155 globals
->sgot
->contents
+ cur_off
);
7162 local_got_offsets
[r_symndx
] |= 1;
7165 if ((tls_type
& GOT_TLS_GD
) && r_type
!= R_ARM_TLS_GD32
)
7167 value
= globals
->sgot
->output_section
->vma
+ globals
->sgot
->output_offset
+ off
7168 - (input_section
->output_section
->vma
+ input_section
->output_offset
+ rel
->r_offset
);
7170 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
7171 contents
, rel
->r_offset
, value
,
7175 case R_ARM_TLS_LE32
:
7178 (*_bfd_error_handler
)
7179 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
7180 input_bfd
, input_section
,
7181 (long) rel
->r_offset
, howto
->name
);
7185 value
= tpoff (info
, value
);
7187 return _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
7188 contents
, rel
->r_offset
, value
,
7192 if (globals
->fix_v4bx
)
7194 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7196 /* Ensure that we have a BX instruction. */
7197 BFD_ASSERT ((insn
& 0x0ffffff0) == 0x012fff10);
7199 if (globals
->fix_v4bx
== 2 && (insn
& 0xf) != 0xf)
7201 /* Branch to veneer. */
7203 glue_addr
= elf32_arm_bx_glue (info
, insn
& 0xf);
7204 glue_addr
-= input_section
->output_section
->vma
7205 + input_section
->output_offset
7206 + rel
->r_offset
+ 8;
7207 insn
= (insn
& 0xf0000000) | 0x0a000000
7208 | ((glue_addr
>> 2) & 0x00ffffff);
7212 /* Preserve Rm (lowest four bits) and the condition code
7213 (highest four bits). Other bits encode MOV PC,Rm. */
7214 insn
= (insn
& 0xf000000f) | 0x01a0f000;
7217 bfd_put_32 (input_bfd
, insn
, hit_data
);
7219 return bfd_reloc_ok
;
7221 case R_ARM_MOVW_ABS_NC
:
7222 case R_ARM_MOVT_ABS
:
7223 case R_ARM_MOVW_PREL_NC
:
7224 case R_ARM_MOVT_PREL
:
7225 /* Until we properly support segment-base-relative addressing then
7226 we assume the segment base to be zero, as for the group relocations.
7227 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
7228 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
7229 case R_ARM_MOVW_BREL_NC
:
7230 case R_ARM_MOVW_BREL
:
7231 case R_ARM_MOVT_BREL
:
7233 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7235 if (globals
->use_rel
)
7237 addend
= ((insn
>> 4) & 0xf000) | (insn
& 0xfff);
7238 signed_addend
= (addend
^ 0x8000) - 0x8000;
7241 value
+= signed_addend
;
7243 if (r_type
== R_ARM_MOVW_PREL_NC
|| r_type
== R_ARM_MOVT_PREL
)
7244 value
-= (input_section
->output_section
->vma
7245 + input_section
->output_offset
+ rel
->r_offset
);
7247 if (r_type
== R_ARM_MOVW_BREL
&& value
>= 0x10000)
7248 return bfd_reloc_overflow
;
7250 if (sym_flags
== STT_ARM_TFUNC
)
7253 if (r_type
== R_ARM_MOVT_ABS
|| r_type
== R_ARM_MOVT_PREL
7254 || r_type
== R_ARM_MOVT_BREL
)
7258 insn
|= value
& 0xfff;
7259 insn
|= (value
& 0xf000) << 4;
7260 bfd_put_32 (input_bfd
, insn
, hit_data
);
7262 return bfd_reloc_ok
;
7264 case R_ARM_THM_MOVW_ABS_NC
:
7265 case R_ARM_THM_MOVT_ABS
:
7266 case R_ARM_THM_MOVW_PREL_NC
:
7267 case R_ARM_THM_MOVT_PREL
:
7268 /* Until we properly support segment-base-relative addressing then
7269 we assume the segment base to be zero, as for the above relocations.
7270 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
7271 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
7272 as R_ARM_THM_MOVT_ABS. */
7273 case R_ARM_THM_MOVW_BREL_NC
:
7274 case R_ARM_THM_MOVW_BREL
:
7275 case R_ARM_THM_MOVT_BREL
:
7279 insn
= bfd_get_16 (input_bfd
, hit_data
) << 16;
7280 insn
|= bfd_get_16 (input_bfd
, hit_data
+ 2);
7282 if (globals
->use_rel
)
7284 addend
= ((insn
>> 4) & 0xf000)
7285 | ((insn
>> 15) & 0x0800)
7286 | ((insn
>> 4) & 0x0700)
7288 signed_addend
= (addend
^ 0x8000) - 0x8000;
7291 value
+= signed_addend
;
7293 if (r_type
== R_ARM_THM_MOVW_PREL_NC
|| r_type
== R_ARM_THM_MOVT_PREL
)
7294 value
-= (input_section
->output_section
->vma
7295 + input_section
->output_offset
+ rel
->r_offset
);
7297 if (r_type
== R_ARM_THM_MOVW_BREL
&& value
>= 0x10000)
7298 return bfd_reloc_overflow
;
7300 if (sym_flags
== STT_ARM_TFUNC
)
7303 if (r_type
== R_ARM_THM_MOVT_ABS
|| r_type
== R_ARM_THM_MOVT_PREL
7304 || r_type
== R_ARM_THM_MOVT_BREL
)
7308 insn
|= (value
& 0xf000) << 4;
7309 insn
|= (value
& 0x0800) << 15;
7310 insn
|= (value
& 0x0700) << 4;
7311 insn
|= (value
& 0x00ff);
7313 bfd_put_16 (input_bfd
, insn
>> 16, hit_data
);
7314 bfd_put_16 (input_bfd
, insn
& 0xffff, hit_data
+ 2);
7316 return bfd_reloc_ok
;
7318 case R_ARM_ALU_PC_G0_NC
:
7319 case R_ARM_ALU_PC_G1_NC
:
7320 case R_ARM_ALU_PC_G0
:
7321 case R_ARM_ALU_PC_G1
:
7322 case R_ARM_ALU_PC_G2
:
7323 case R_ARM_ALU_SB_G0_NC
:
7324 case R_ARM_ALU_SB_G1_NC
:
7325 case R_ARM_ALU_SB_G0
:
7326 case R_ARM_ALU_SB_G1
:
7327 case R_ARM_ALU_SB_G2
:
7329 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7330 bfd_vma pc
= input_section
->output_section
->vma
7331 + input_section
->output_offset
+ rel
->r_offset
;
7332 /* sb should be the origin of the *segment* containing the symbol.
7333 It is not clear how to obtain this OS-dependent value, so we
7334 make an arbitrary choice of zero. */
7338 bfd_signed_vma signed_value
;
7341 /* Determine which group of bits to select. */
7344 case R_ARM_ALU_PC_G0_NC
:
7345 case R_ARM_ALU_PC_G0
:
7346 case R_ARM_ALU_SB_G0_NC
:
7347 case R_ARM_ALU_SB_G0
:
7351 case R_ARM_ALU_PC_G1_NC
:
7352 case R_ARM_ALU_PC_G1
:
7353 case R_ARM_ALU_SB_G1_NC
:
7354 case R_ARM_ALU_SB_G1
:
7358 case R_ARM_ALU_PC_G2
:
7359 case R_ARM_ALU_SB_G2
:
7367 /* If REL, extract the addend from the insn. If RELA, it will
7368 have already been fetched for us. */
7369 if (globals
->use_rel
)
7372 bfd_vma constant
= insn
& 0xff;
7373 bfd_vma rotation
= (insn
& 0xf00) >> 8;
7376 signed_addend
= constant
;
7379 /* Compensate for the fact that in the instruction, the
7380 rotation is stored in multiples of 2 bits. */
7383 /* Rotate "constant" right by "rotation" bits. */
7384 signed_addend
= (constant
>> rotation
) |
7385 (constant
<< (8 * sizeof (bfd_vma
) - rotation
));
7388 /* Determine if the instruction is an ADD or a SUB.
7389 (For REL, this determines the sign of the addend.) */
7390 negative
= identify_add_or_sub (insn
);
7393 (*_bfd_error_handler
)
7394 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
7395 input_bfd
, input_section
,
7396 (long) rel
->r_offset
, howto
->name
);
7397 return bfd_reloc_overflow
;
7400 signed_addend
*= negative
;
7403 /* Compute the value (X) to go in the place. */
7404 if (r_type
== R_ARM_ALU_PC_G0_NC
7405 || r_type
== R_ARM_ALU_PC_G1_NC
7406 || r_type
== R_ARM_ALU_PC_G0
7407 || r_type
== R_ARM_ALU_PC_G1
7408 || r_type
== R_ARM_ALU_PC_G2
)
7410 signed_value
= value
- pc
+ signed_addend
;
7412 /* Section base relative. */
7413 signed_value
= value
- sb
+ signed_addend
;
7415 /* If the target symbol is a Thumb function, then set the
7416 Thumb bit in the address. */
7417 if (sym_flags
== STT_ARM_TFUNC
)
7420 /* Calculate the value of the relevant G_n, in encoded
7421 constant-with-rotation format. */
7422 g_n
= calculate_group_reloc_mask (abs (signed_value
), group
,
7425 /* Check for overflow if required. */
7426 if ((r_type
== R_ARM_ALU_PC_G0
7427 || r_type
== R_ARM_ALU_PC_G1
7428 || r_type
== R_ARM_ALU_PC_G2
7429 || r_type
== R_ARM_ALU_SB_G0
7430 || r_type
== R_ARM_ALU_SB_G1
7431 || r_type
== R_ARM_ALU_SB_G2
) && residual
!= 0)
7433 (*_bfd_error_handler
)
7434 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7435 input_bfd
, input_section
,
7436 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7437 return bfd_reloc_overflow
;
7440 /* Mask out the value and the ADD/SUB part of the opcode; take care
7441 not to destroy the S bit. */
7444 /* Set the opcode according to whether the value to go in the
7445 place is negative. */
7446 if (signed_value
< 0)
7451 /* Encode the offset. */
7454 bfd_put_32 (input_bfd
, insn
, hit_data
);
7456 return bfd_reloc_ok
;
7458 case R_ARM_LDR_PC_G0
:
7459 case R_ARM_LDR_PC_G1
:
7460 case R_ARM_LDR_PC_G2
:
7461 case R_ARM_LDR_SB_G0
:
7462 case R_ARM_LDR_SB_G1
:
7463 case R_ARM_LDR_SB_G2
:
7465 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7466 bfd_vma pc
= input_section
->output_section
->vma
7467 + input_section
->output_offset
+ rel
->r_offset
;
7468 bfd_vma sb
= 0; /* See note above. */
7470 bfd_signed_vma signed_value
;
7473 /* Determine which groups of bits to calculate. */
7476 case R_ARM_LDR_PC_G0
:
7477 case R_ARM_LDR_SB_G0
:
7481 case R_ARM_LDR_PC_G1
:
7482 case R_ARM_LDR_SB_G1
:
7486 case R_ARM_LDR_PC_G2
:
7487 case R_ARM_LDR_SB_G2
:
7495 /* If REL, extract the addend from the insn. If RELA, it will
7496 have already been fetched for us. */
7497 if (globals
->use_rel
)
7499 int negative
= (insn
& (1 << 23)) ? 1 : -1;
7500 signed_addend
= negative
* (insn
& 0xfff);
7503 /* Compute the value (X) to go in the place. */
7504 if (r_type
== R_ARM_LDR_PC_G0
7505 || r_type
== R_ARM_LDR_PC_G1
7506 || r_type
== R_ARM_LDR_PC_G2
)
7508 signed_value
= value
- pc
+ signed_addend
;
7510 /* Section base relative. */
7511 signed_value
= value
- sb
+ signed_addend
;
7513 /* Calculate the value of the relevant G_{n-1} to obtain
7514 the residual at that stage. */
7515 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
7517 /* Check for overflow. */
7518 if (residual
>= 0x1000)
7520 (*_bfd_error_handler
)
7521 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7522 input_bfd
, input_section
,
7523 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7524 return bfd_reloc_overflow
;
7527 /* Mask out the value and U bit. */
7530 /* Set the U bit if the value to go in the place is non-negative. */
7531 if (signed_value
>= 0)
7534 /* Encode the offset. */
7537 bfd_put_32 (input_bfd
, insn
, hit_data
);
7539 return bfd_reloc_ok
;
7541 case R_ARM_LDRS_PC_G0
:
7542 case R_ARM_LDRS_PC_G1
:
7543 case R_ARM_LDRS_PC_G2
:
7544 case R_ARM_LDRS_SB_G0
:
7545 case R_ARM_LDRS_SB_G1
:
7546 case R_ARM_LDRS_SB_G2
:
7548 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7549 bfd_vma pc
= input_section
->output_section
->vma
7550 + input_section
->output_offset
+ rel
->r_offset
;
7551 bfd_vma sb
= 0; /* See note above. */
7553 bfd_signed_vma signed_value
;
7556 /* Determine which groups of bits to calculate. */
7559 case R_ARM_LDRS_PC_G0
:
7560 case R_ARM_LDRS_SB_G0
:
7564 case R_ARM_LDRS_PC_G1
:
7565 case R_ARM_LDRS_SB_G1
:
7569 case R_ARM_LDRS_PC_G2
:
7570 case R_ARM_LDRS_SB_G2
:
7578 /* If REL, extract the addend from the insn. If RELA, it will
7579 have already been fetched for us. */
7580 if (globals
->use_rel
)
7582 int negative
= (insn
& (1 << 23)) ? 1 : -1;
7583 signed_addend
= negative
* (((insn
& 0xf00) >> 4) + (insn
& 0xf));
7586 /* Compute the value (X) to go in the place. */
7587 if (r_type
== R_ARM_LDRS_PC_G0
7588 || r_type
== R_ARM_LDRS_PC_G1
7589 || r_type
== R_ARM_LDRS_PC_G2
)
7591 signed_value
= value
- pc
+ signed_addend
;
7593 /* Section base relative. */
7594 signed_value
= value
- sb
+ signed_addend
;
7596 /* Calculate the value of the relevant G_{n-1} to obtain
7597 the residual at that stage. */
7598 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
7600 /* Check for overflow. */
7601 if (residual
>= 0x100)
7603 (*_bfd_error_handler
)
7604 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7605 input_bfd
, input_section
,
7606 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7607 return bfd_reloc_overflow
;
7610 /* Mask out the value and U bit. */
7613 /* Set the U bit if the value to go in the place is non-negative. */
7614 if (signed_value
>= 0)
7617 /* Encode the offset. */
7618 insn
|= ((residual
& 0xf0) << 4) | (residual
& 0xf);
7620 bfd_put_32 (input_bfd
, insn
, hit_data
);
7622 return bfd_reloc_ok
;
7624 case R_ARM_LDC_PC_G0
:
7625 case R_ARM_LDC_PC_G1
:
7626 case R_ARM_LDC_PC_G2
:
7627 case R_ARM_LDC_SB_G0
:
7628 case R_ARM_LDC_SB_G1
:
7629 case R_ARM_LDC_SB_G2
:
7631 bfd_vma insn
= bfd_get_32 (input_bfd
, hit_data
);
7632 bfd_vma pc
= input_section
->output_section
->vma
7633 + input_section
->output_offset
+ rel
->r_offset
;
7634 bfd_vma sb
= 0; /* See note above. */
7636 bfd_signed_vma signed_value
;
7639 /* Determine which groups of bits to calculate. */
7642 case R_ARM_LDC_PC_G0
:
7643 case R_ARM_LDC_SB_G0
:
7647 case R_ARM_LDC_PC_G1
:
7648 case R_ARM_LDC_SB_G1
:
7652 case R_ARM_LDC_PC_G2
:
7653 case R_ARM_LDC_SB_G2
:
7661 /* If REL, extract the addend from the insn. If RELA, it will
7662 have already been fetched for us. */
7663 if (globals
->use_rel
)
7665 int negative
= (insn
& (1 << 23)) ? 1 : -1;
7666 signed_addend
= negative
* ((insn
& 0xff) << 2);
7669 /* Compute the value (X) to go in the place. */
7670 if (r_type
== R_ARM_LDC_PC_G0
7671 || r_type
== R_ARM_LDC_PC_G1
7672 || r_type
== R_ARM_LDC_PC_G2
)
7674 signed_value
= value
- pc
+ signed_addend
;
7676 /* Section base relative. */
7677 signed_value
= value
- sb
+ signed_addend
;
7679 /* Calculate the value of the relevant G_{n-1} to obtain
7680 the residual at that stage. */
7681 calculate_group_reloc_mask (abs (signed_value
), group
- 1, &residual
);
7683 /* Check for overflow. (The absolute value to go in the place must be
7684 divisible by four and, after having been divided by four, must
7685 fit in eight bits.) */
7686 if ((residual
& 0x3) != 0 || residual
>= 0x400)
7688 (*_bfd_error_handler
)
7689 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7690 input_bfd
, input_section
,
7691 (long) rel
->r_offset
, abs (signed_value
), howto
->name
);
7692 return bfd_reloc_overflow
;
7695 /* Mask out the value and U bit. */
7698 /* Set the U bit if the value to go in the place is non-negative. */
7699 if (signed_value
>= 0)
7702 /* Encode the offset. */
7703 insn
|= residual
>> 2;
7705 bfd_put_32 (input_bfd
, insn
, hit_data
);
7707 return bfd_reloc_ok
;
7710 return bfd_reloc_notsupported
;
7714 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
7716 arm_add_to_rel (bfd
* abfd
,
7718 reloc_howto_type
* howto
,
7719 bfd_signed_vma increment
)
7721 bfd_signed_vma addend
;
7723 if (howto
->type
== R_ARM_THM_CALL
7724 || howto
->type
== R_ARM_THM_JUMP24
)
7726 int upper_insn
, lower_insn
;
7729 upper_insn
= bfd_get_16 (abfd
, address
);
7730 lower_insn
= bfd_get_16 (abfd
, address
+ 2);
7731 upper
= upper_insn
& 0x7ff;
7732 lower
= lower_insn
& 0x7ff;
7734 addend
= (upper
<< 12) | (lower
<< 1);
7735 addend
+= increment
;
7738 upper_insn
= (upper_insn
& 0xf800) | ((addend
>> 11) & 0x7ff);
7739 lower_insn
= (lower_insn
& 0xf800) | (addend
& 0x7ff);
7741 bfd_put_16 (abfd
, (bfd_vma
) upper_insn
, address
);
7742 bfd_put_16 (abfd
, (bfd_vma
) lower_insn
, address
+ 2);
7748 contents
= bfd_get_32 (abfd
, address
);
7750 /* Get the (signed) value from the instruction. */
7751 addend
= contents
& howto
->src_mask
;
7752 if (addend
& ((howto
->src_mask
+ 1) >> 1))
7754 bfd_signed_vma mask
;
7757 mask
&= ~ howto
->src_mask
;
7761 /* Add in the increment, (which is a byte value). */
7762 switch (howto
->type
)
7765 addend
+= increment
;
7772 addend
<<= howto
->size
;
7773 addend
+= increment
;
7775 /* Should we check for overflow here ? */
7777 /* Drop any undesired bits. */
7778 addend
>>= howto
->rightshift
;
7782 contents
= (contents
& ~ howto
->dst_mask
) | (addend
& howto
->dst_mask
);
7784 bfd_put_32 (abfd
, contents
, address
);
7788 #define IS_ARM_TLS_RELOC(R_TYPE) \
7789 ((R_TYPE) == R_ARM_TLS_GD32 \
7790 || (R_TYPE) == R_ARM_TLS_LDO32 \
7791 || (R_TYPE) == R_ARM_TLS_LDM32 \
7792 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
7793 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
7794 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
7795 || (R_TYPE) == R_ARM_TLS_LE32 \
7796 || (R_TYPE) == R_ARM_TLS_IE32)
7798 /* Relocate an ARM ELF section. */
7801 elf32_arm_relocate_section (bfd
* output_bfd
,
7802 struct bfd_link_info
* info
,
7804 asection
* input_section
,
7805 bfd_byte
* contents
,
7806 Elf_Internal_Rela
* relocs
,
7807 Elf_Internal_Sym
* local_syms
,
7808 asection
** local_sections
)
7810 Elf_Internal_Shdr
*symtab_hdr
;
7811 struct elf_link_hash_entry
**sym_hashes
;
7812 Elf_Internal_Rela
*rel
;
7813 Elf_Internal_Rela
*relend
;
7815 struct elf32_arm_link_hash_table
* globals
;
7817 globals
= elf32_arm_hash_table (info
);
7819 symtab_hdr
= & elf_symtab_hdr (input_bfd
);
7820 sym_hashes
= elf_sym_hashes (input_bfd
);
7823 relend
= relocs
+ input_section
->reloc_count
;
7824 for (; rel
< relend
; rel
++)
7827 reloc_howto_type
* howto
;
7828 unsigned long r_symndx
;
7829 Elf_Internal_Sym
* sym
;
7831 struct elf_link_hash_entry
* h
;
7833 bfd_reloc_status_type r
;
7836 bfd_boolean unresolved_reloc
= FALSE
;
7837 char *error_message
= NULL
;
7839 r_symndx
= ELF32_R_SYM (rel
->r_info
);
7840 r_type
= ELF32_R_TYPE (rel
->r_info
);
7841 r_type
= arm_real_reloc_type (globals
, r_type
);
7843 if ( r_type
== R_ARM_GNU_VTENTRY
7844 || r_type
== R_ARM_GNU_VTINHERIT
)
7847 bfd_reloc
.howto
= elf32_arm_howto_from_type (r_type
);
7848 howto
= bfd_reloc
.howto
;
7854 if (r_symndx
< symtab_hdr
->sh_info
)
7856 sym
= local_syms
+ r_symndx
;
7857 sym_type
= ELF32_ST_TYPE (sym
->st_info
);
7858 sec
= local_sections
[r_symndx
];
7859 if (globals
->use_rel
)
7861 relocation
= (sec
->output_section
->vma
7862 + sec
->output_offset
7864 if (!info
->relocatable
7865 && (sec
->flags
& SEC_MERGE
)
7866 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
7869 bfd_vma addend
, value
;
7873 case R_ARM_MOVW_ABS_NC
:
7874 case R_ARM_MOVT_ABS
:
7875 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
7876 addend
= ((value
& 0xf0000) >> 4) | (value
& 0xfff);
7877 addend
= (addend
^ 0x8000) - 0x8000;
7880 case R_ARM_THM_MOVW_ABS_NC
:
7881 case R_ARM_THM_MOVT_ABS
:
7882 value
= bfd_get_16 (input_bfd
, contents
+ rel
->r_offset
)
7884 value
|= bfd_get_16 (input_bfd
,
7885 contents
+ rel
->r_offset
+ 2);
7886 addend
= ((value
& 0xf7000) >> 4) | (value
& 0xff)
7887 | ((value
& 0x04000000) >> 15);
7888 addend
= (addend
^ 0x8000) - 0x8000;
7892 if (howto
->rightshift
7893 || (howto
->src_mask
& (howto
->src_mask
+ 1)))
7895 (*_bfd_error_handler
)
7896 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
7897 input_bfd
, input_section
,
7898 (long) rel
->r_offset
, howto
->name
);
7902 value
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
7904 /* Get the (signed) value from the instruction. */
7905 addend
= value
& howto
->src_mask
;
7906 if (addend
& ((howto
->src_mask
+ 1) >> 1))
7908 bfd_signed_vma mask
;
7911 mask
&= ~ howto
->src_mask
;
7919 _bfd_elf_rel_local_sym (output_bfd
, sym
, &msec
, addend
)
7921 addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
7923 /* Cases here must match those in the preceeding
7924 switch statement. */
7927 case R_ARM_MOVW_ABS_NC
:
7928 case R_ARM_MOVT_ABS
:
7929 value
= (value
& 0xfff0f000) | ((addend
& 0xf000) << 4)
7931 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
7934 case R_ARM_THM_MOVW_ABS_NC
:
7935 case R_ARM_THM_MOVT_ABS
:
7936 value
= (value
& 0xfbf08f00) | ((addend
& 0xf700) << 4)
7937 | (addend
& 0xff) | ((addend
& 0x0800) << 15);
7938 bfd_put_16 (input_bfd
, value
>> 16,
7939 contents
+ rel
->r_offset
);
7940 bfd_put_16 (input_bfd
, value
,
7941 contents
+ rel
->r_offset
+ 2);
7945 value
= (value
& ~ howto
->dst_mask
)
7946 | (addend
& howto
->dst_mask
);
7947 bfd_put_32 (input_bfd
, value
, contents
+ rel
->r_offset
);
7953 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
7959 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
7960 r_symndx
, symtab_hdr
, sym_hashes
,
7962 unresolved_reloc
, warned
);
7967 if (sec
!= NULL
&& elf_discarded_section (sec
))
7969 /* For relocs against symbols from removed linkonce sections,
7970 or sections discarded by a linker script, we just want the
7971 section contents zeroed. Avoid any special processing. */
7972 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
7978 if (info
->relocatable
)
7980 /* This is a relocatable link. We don't have to change
7981 anything, unless the reloc is against a section symbol,
7982 in which case we have to adjust according to where the
7983 section symbol winds up in the output section. */
7984 if (sym
!= NULL
&& ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
7986 if (globals
->use_rel
)
7987 arm_add_to_rel (input_bfd
, contents
+ rel
->r_offset
,
7988 howto
, (bfd_signed_vma
) sec
->output_offset
);
7990 rel
->r_addend
+= sec
->output_offset
;
7996 name
= h
->root
.root
.string
;
7999 name
= (bfd_elf_string_from_elf_section
8000 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
8001 if (name
== NULL
|| *name
== '\0')
8002 name
= bfd_section_name (input_bfd
, sec
);
8006 && r_type
!= R_ARM_NONE
8008 || h
->root
.type
== bfd_link_hash_defined
8009 || h
->root
.type
== bfd_link_hash_defweak
)
8010 && IS_ARM_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
8012 (*_bfd_error_handler
)
8013 ((sym_type
== STT_TLS
8014 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
8015 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
8018 (long) rel
->r_offset
,
8023 r
= elf32_arm_final_link_relocate (howto
, input_bfd
, output_bfd
,
8024 input_section
, contents
, rel
,
8025 relocation
, info
, sec
, name
,
8026 (h
? ELF_ST_TYPE (h
->type
) :
8027 ELF_ST_TYPE (sym
->st_info
)), h
,
8028 &unresolved_reloc
, &error_message
);
8030 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
8031 because such sections are not SEC_ALLOC and thus ld.so will
8032 not process them. */
8033 if (unresolved_reloc
8034 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
8037 (*_bfd_error_handler
)
8038 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
8041 (long) rel
->r_offset
,
8043 h
->root
.root
.string
);
8047 if (r
!= bfd_reloc_ok
)
8051 case bfd_reloc_overflow
:
8052 /* If the overflowing reloc was to an undefined symbol,
8053 we have already printed one error message and there
8054 is no point complaining again. */
8056 h
->root
.type
!= bfd_link_hash_undefined
)
8057 && (!((*info
->callbacks
->reloc_overflow
)
8058 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
8059 (bfd_vma
) 0, input_bfd
, input_section
,
8064 case bfd_reloc_undefined
:
8065 if (!((*info
->callbacks
->undefined_symbol
)
8066 (info
, name
, input_bfd
, input_section
,
8067 rel
->r_offset
, TRUE
)))
8071 case bfd_reloc_outofrange
:
8072 error_message
= _("out of range");
8075 case bfd_reloc_notsupported
:
8076 error_message
= _("unsupported relocation");
8079 case bfd_reloc_dangerous
:
8080 /* error_message should already be set. */
8084 error_message
= _("unknown error");
8088 BFD_ASSERT (error_message
!= NULL
);
8089 if (!((*info
->callbacks
->reloc_dangerous
)
8090 (info
, error_message
, input_bfd
, input_section
,
8101 /* Set the right machine number. */
8104 elf32_arm_object_p (bfd
*abfd
)
8108 mach
= bfd_arm_get_mach_from_notes (abfd
, ARM_NOTE_SECTION
);
8110 if (mach
!= bfd_mach_arm_unknown
)
8111 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
8113 else if (elf_elfheader (abfd
)->e_flags
& EF_ARM_MAVERICK_FLOAT
)
8114 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, bfd_mach_arm_ep9312
);
8117 bfd_default_set_arch_mach (abfd
, bfd_arch_arm
, mach
);
8122 /* Function to keep ARM specific flags in the ELF header. */
8125 elf32_arm_set_private_flags (bfd
*abfd
, flagword flags
)
8127 if (elf_flags_init (abfd
)
8128 && elf_elfheader (abfd
)->e_flags
!= flags
)
8130 if (EF_ARM_EABI_VERSION (flags
) == EF_ARM_EABI_UNKNOWN
)
8132 if (flags
& EF_ARM_INTERWORK
)
8133 (*_bfd_error_handler
)
8134 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
8138 (_("Warning: Clearing the interworking flag of %B due to outside request"),
8144 elf_elfheader (abfd
)->e_flags
= flags
;
8145 elf_flags_init (abfd
) = TRUE
;
8151 /* Copy backend specific data from one object module to another. */
8154 elf32_arm_copy_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
8159 if (! is_arm_elf (ibfd
) || ! is_arm_elf (obfd
))
8162 in_flags
= elf_elfheader (ibfd
)->e_flags
;
8163 out_flags
= elf_elfheader (obfd
)->e_flags
;
8165 if (elf_flags_init (obfd
)
8166 && EF_ARM_EABI_VERSION (out_flags
) == EF_ARM_EABI_UNKNOWN
8167 && in_flags
!= out_flags
)
8169 /* Cannot mix APCS26 and APCS32 code. */
8170 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
8173 /* Cannot mix float APCS and non-float APCS code. */
8174 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
8177 /* If the src and dest have different interworking flags
8178 then turn off the interworking bit. */
8179 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
8181 if (out_flags
& EF_ARM_INTERWORK
)
8183 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
8186 in_flags
&= ~EF_ARM_INTERWORK
;
8189 /* Likewise for PIC, though don't warn for this case. */
8190 if ((in_flags
& EF_ARM_PIC
) != (out_flags
& EF_ARM_PIC
))
8191 in_flags
&= ~EF_ARM_PIC
;
8194 elf_elfheader (obfd
)->e_flags
= in_flags
;
8195 elf_flags_init (obfd
) = TRUE
;
8197 /* Also copy the EI_OSABI field. */
8198 elf_elfheader (obfd
)->e_ident
[EI_OSABI
] =
8199 elf_elfheader (ibfd
)->e_ident
[EI_OSABI
];
8201 /* Copy object attributes. */
8202 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
8207 /* Values for Tag_ABI_PCS_R9_use. */
8216 /* Values for Tag_ABI_PCS_RW_data. */
8219 AEABI_PCS_RW_data_absolute
,
8220 AEABI_PCS_RW_data_PCrel
,
8221 AEABI_PCS_RW_data_SBrel
,
8222 AEABI_PCS_RW_data_unused
8225 /* Values for Tag_ABI_enum_size. */
8231 AEABI_enum_forced_wide
8234 /* Determine whether an object attribute tag takes an integer, a
8238 elf32_arm_obj_attrs_arg_type (int tag
)
8240 if (tag
== Tag_compatibility
)
8241 return ATTR_TYPE_FLAG_INT_VAL
| ATTR_TYPE_FLAG_STR_VAL
;
8242 else if (tag
== Tag_nodefaults
)
8243 return ATTR_TYPE_FLAG_INT_VAL
| ATTR_TYPE_FLAG_NO_DEFAULT
;
8244 else if (tag
== Tag_CPU_raw_name
|| tag
== Tag_CPU_name
)
8245 return ATTR_TYPE_FLAG_STR_VAL
;
8247 return ATTR_TYPE_FLAG_INT_VAL
;
8249 return (tag
& 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL
: ATTR_TYPE_FLAG_INT_VAL
;
8252 /* The ABI defines that Tag_conformance should be emitted first, and that
8253 Tag_nodefaults should be second (if either is defined). This sets those
8254 two positions, and bumps up the position of all the remaining tags to
8257 elf32_arm_obj_attrs_order (int num
)
8260 return Tag_conformance
;
8262 return Tag_nodefaults
;
8263 if ((num
- 2) < Tag_nodefaults
)
8265 if ((num
- 1) < Tag_conformance
)
8270 /* Read the architecture from the Tag_also_compatible_with attribute, if any.
8271 Returns -1 if no architecture could be read. */
8274 get_secondary_compatible_arch (bfd
*abfd
)
8276 obj_attribute
*attr
=
8277 &elf_known_obj_attributes_proc (abfd
)[Tag_also_compatible_with
];
8279 /* Note: the tag and its argument below are uleb128 values, though
8280 currently-defined values fit in one byte for each. */
8282 && attr
->s
[0] == Tag_CPU_arch
8283 && (attr
->s
[1] & 128) != 128
8287 /* This tag is "safely ignorable", so don't complain if it looks funny. */
8291 /* Set, or unset, the architecture of the Tag_also_compatible_with attribute.
8292 The tag is removed if ARCH is -1. */
8295 set_secondary_compatible_arch (bfd
*abfd
, int arch
)
8297 obj_attribute
*attr
=
8298 &elf_known_obj_attributes_proc (abfd
)[Tag_also_compatible_with
];
8306 /* Note: the tag and its argument below are uleb128 values, though
8307 currently-defined values fit in one byte for each. */
8309 attr
->s
= bfd_alloc (abfd
, 3);
8310 attr
->s
[0] = Tag_CPU_arch
;
8315 /* Combine two values for Tag_CPU_arch, taking secondary compatibility tags
8319 tag_cpu_arch_combine (bfd
*ibfd
, int oldtag
, int *secondary_compat_out
,
8320 int newtag
, int secondary_compat
)
8322 #define T(X) TAG_CPU_ARCH_##X
8323 int tagl
, tagh
, result
;
8326 T(V6T2
), /* PRE_V4. */
8330 T(V6T2
), /* V5TE. */
8331 T(V6T2
), /* V5TEJ. */
8338 T(V6K
), /* PRE_V4. */
8343 T(V6K
), /* V5TEJ. */
8345 T(V6KZ
), /* V6KZ. */
8351 T(V7
), /* PRE_V4. */
8370 T(V6K
), /* V5TEJ. */
8372 T(V6KZ
), /* V6KZ. */
8385 T(V6K
), /* V5TEJ. */
8387 T(V6KZ
), /* V6KZ. */
8391 T(V6S_M
), /* V6_M. */
8392 T(V6S_M
) /* V6S_M. */
8394 const int v4t_plus_v6_m
[] =
8400 T(V5TE
), /* V5TE. */
8401 T(V5TEJ
), /* V5TEJ. */
8403 T(V6KZ
), /* V6KZ. */
8404 T(V6T2
), /* V6T2. */
8407 T(V6_M
), /* V6_M. */
8408 T(V6S_M
), /* V6S_M. */
8409 T(V4T_PLUS_V6_M
) /* V4T plus V6_M. */
8418 /* Pseudo-architecture. */
8422 /* Check we've not got a higher architecture than we know about. */
8424 if (oldtag
>= MAX_TAG_CPU_ARCH
|| newtag
>= MAX_TAG_CPU_ARCH
)
8426 _bfd_error_handler (_("ERROR: %B: Unknown CPU architecture"), ibfd
);
8430 /* Override old tag if we have a Tag_also_compatible_with on the output. */
8432 if ((oldtag
== T(V6_M
) && *secondary_compat_out
== T(V4T
))
8433 || (oldtag
== T(V4T
) && *secondary_compat_out
== T(V6_M
)))
8434 oldtag
= T(V4T_PLUS_V6_M
);
8436 /* And override the new tag if we have a Tag_also_compatible_with on the
8439 if ((newtag
== T(V6_M
) && secondary_compat
== T(V4T
))
8440 || (newtag
== T(V4T
) && secondary_compat
== T(V6_M
)))
8441 newtag
= T(V4T_PLUS_V6_M
);
8443 tagl
= (oldtag
< newtag
) ? oldtag
: newtag
;
8444 result
= tagh
= (oldtag
> newtag
) ? oldtag
: newtag
;
8446 /* Architectures before V6KZ add features monotonically. */
8447 if (tagh
<= TAG_CPU_ARCH_V6KZ
)
8450 result
= comb
[tagh
- T(V6T2
)][tagl
];
8452 /* Use Tag_CPU_arch == V4T and Tag_also_compatible_with (Tag_CPU_arch V6_M)
8453 as the canonical version. */
8454 if (result
== T(V4T_PLUS_V6_M
))
8457 *secondary_compat_out
= T(V6_M
);
8460 *secondary_compat_out
= -1;
8464 _bfd_error_handler (_("ERROR: %B: Conflicting CPU architectures %d/%d"),
8465 ibfd
, oldtag
, newtag
);
8473 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
8474 are conflicting attributes. */
8477 elf32_arm_merge_eabi_attributes (bfd
*ibfd
, bfd
*obfd
)
8479 obj_attribute
*in_attr
;
8480 obj_attribute
*out_attr
;
8481 obj_attribute_list
*in_list
;
8482 obj_attribute_list
*out_list
;
8483 obj_attribute_list
**out_listp
;
8484 /* Some tags have 0 = don't care, 1 = strong requirement,
8485 2 = weak requirement. */
8486 static const int order_021
[3] = {0, 2, 1};
8487 /* For use with Tag_VFP_arch. */
8488 static const int order_01243
[5] = {0, 1, 2, 4, 3};
8490 bfd_boolean result
= TRUE
;
8492 if (!elf_known_obj_attributes_proc (obfd
)[0].i
)
8494 /* This is the first object. Copy the attributes. */
8495 _bfd_elf_copy_obj_attributes (ibfd
, obfd
);
8497 /* Use the Tag_null value to indicate the attributes have been
8499 elf_known_obj_attributes_proc (obfd
)[0].i
= 1;
8504 in_attr
= elf_known_obj_attributes_proc (ibfd
);
8505 out_attr
= elf_known_obj_attributes_proc (obfd
);
8506 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
8507 if (in_attr
[Tag_ABI_VFP_args
].i
!= out_attr
[Tag_ABI_VFP_args
].i
)
8509 /* Ignore mismatches if the object doesn't use floating point. */
8510 if (out_attr
[Tag_ABI_FP_number_model
].i
== 0)
8511 out_attr
[Tag_ABI_VFP_args
].i
= in_attr
[Tag_ABI_VFP_args
].i
;
8512 else if (in_attr
[Tag_ABI_FP_number_model
].i
!= 0)
8515 (_("ERROR: %B uses VFP register arguments, %B does not"),
8521 for (i
= 4; i
< NUM_KNOWN_OBJ_ATTRIBUTES
; i
++)
8523 /* Merge this attribute with existing attributes. */
8526 case Tag_CPU_raw_name
:
8528 /* These are merged after Tag_CPU_arch. */
8531 case Tag_ABI_optimization_goals
:
8532 case Tag_ABI_FP_optimization_goals
:
8533 /* Use the first value seen. */
8538 int secondary_compat
= -1, secondary_compat_out
= -1;
8539 unsigned int saved_out_attr
= out_attr
[i
].i
;
8540 static const char *name_table
[] = {
8541 /* These aren't real CPU names, but we can't guess
8542 that from the architecture version alone. */
8558 /* Merge Tag_CPU_arch and Tag_also_compatible_with. */
8559 secondary_compat
= get_secondary_compatible_arch (ibfd
);
8560 secondary_compat_out
= get_secondary_compatible_arch (obfd
);
8561 out_attr
[i
].i
= tag_cpu_arch_combine (ibfd
, out_attr
[i
].i
,
8562 &secondary_compat_out
,
8565 set_secondary_compatible_arch (obfd
, secondary_compat_out
);
8567 /* Merge Tag_CPU_name and Tag_CPU_raw_name. */
8568 if (out_attr
[i
].i
== saved_out_attr
)
8569 ; /* Leave the names alone. */
8570 else if (out_attr
[i
].i
== in_attr
[i
].i
)
8572 /* The output architecture has been changed to match the
8573 input architecture. Use the input names. */
8574 out_attr
[Tag_CPU_name
].s
= in_attr
[Tag_CPU_name
].s
8575 ? _bfd_elf_attr_strdup (obfd
, in_attr
[Tag_CPU_name
].s
)
8577 out_attr
[Tag_CPU_raw_name
].s
= in_attr
[Tag_CPU_raw_name
].s
8578 ? _bfd_elf_attr_strdup (obfd
, in_attr
[Tag_CPU_raw_name
].s
)
8583 out_attr
[Tag_CPU_name
].s
= NULL
;
8584 out_attr
[Tag_CPU_raw_name
].s
= NULL
;
8587 /* If we still don't have a value for Tag_CPU_name,
8588 make one up now. Tag_CPU_raw_name remains blank. */
8589 if (out_attr
[Tag_CPU_name
].s
== NULL
8590 && out_attr
[i
].i
< ARRAY_SIZE (name_table
))
8591 out_attr
[Tag_CPU_name
].s
=
8592 _bfd_elf_attr_strdup (obfd
, name_table
[out_attr
[i
].i
]);
8596 case Tag_ARM_ISA_use
:
8597 case Tag_THUMB_ISA_use
:
8599 case Tag_Advanced_SIMD_arch
:
8600 /* ??? Do Advanced_SIMD (NEON) and WMMX conflict? */
8601 case Tag_ABI_FP_rounding
:
8602 case Tag_ABI_FP_exceptions
:
8603 case Tag_ABI_FP_user_exceptions
:
8604 case Tag_ABI_FP_number_model
:
8605 case Tag_VFP_HP_extension
:
8606 case Tag_CPU_unaligned_access
:
8608 case Tag_Virtualization_use
:
8609 case Tag_MPextension_use
:
8610 /* Use the largest value specified. */
8611 if (in_attr
[i
].i
> out_attr
[i
].i
)
8612 out_attr
[i
].i
= in_attr
[i
].i
;
8615 case Tag_ABI_align8_preserved
:
8616 case Tag_ABI_PCS_RO_data
:
8617 /* Use the smallest value specified. */
8618 if (in_attr
[i
].i
< out_attr
[i
].i
)
8619 out_attr
[i
].i
= in_attr
[i
].i
;
8622 case Tag_ABI_align8_needed
:
8623 if ((in_attr
[i
].i
> 0 || out_attr
[i
].i
> 0)
8624 && (in_attr
[Tag_ABI_align8_preserved
].i
== 0
8625 || out_attr
[Tag_ABI_align8_preserved
].i
== 0))
8627 /* This error message should be enabled once all non-conformant
8628 binaries in the toolchain have had the attributes set
8631 (_("ERROR: %B: 8-byte data alignment conflicts with %B"),
8636 case Tag_ABI_FP_denormal
:
8637 case Tag_ABI_PCS_GOT_use
:
8638 /* Use the "greatest" from the sequence 0, 2, 1, or the largest
8639 value if greater than 2 (for future-proofing). */
8640 if ((in_attr
[i
].i
> 2 && in_attr
[i
].i
> out_attr
[i
].i
)
8641 || (in_attr
[i
].i
<= 2 && out_attr
[i
].i
<= 2
8642 && order_021
[in_attr
[i
].i
] > order_021
[out_attr
[i
].i
]))
8643 out_attr
[i
].i
= in_attr
[i
].i
;
8647 case Tag_CPU_arch_profile
:
8648 if (out_attr
[i
].i
!= in_attr
[i
].i
)
8650 /* 0 will merge with anything.
8651 'A' and 'S' merge to 'A'.
8652 'R' and 'S' merge to 'R'.
8653 'M' and 'A|R|S' is an error. */
8654 if (out_attr
[i
].i
== 0
8655 || (out_attr
[i
].i
== 'S'
8656 && (in_attr
[i
].i
== 'A' || in_attr
[i
].i
== 'R')))
8657 out_attr
[i
].i
= in_attr
[i
].i
;
8658 else if (in_attr
[i
].i
== 0
8659 || (in_attr
[i
].i
== 'S'
8660 && (out_attr
[i
].i
== 'A' || out_attr
[i
].i
== 'R')))
8665 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
8667 in_attr
[i
].i
? in_attr
[i
].i
: '0',
8668 out_attr
[i
].i
? out_attr
[i
].i
: '0');
8674 /* Use the "greatest" from the sequence 0, 1, 2, 4, 3, or the
8675 largest value if greater than 4 (for future-proofing). */
8676 if ((in_attr
[i
].i
> 4 && in_attr
[i
].i
> out_attr
[i
].i
)
8677 || (in_attr
[i
].i
<= 4 && out_attr
[i
].i
<= 4
8678 && order_01243
[in_attr
[i
].i
] > order_01243
[out_attr
[i
].i
]))
8679 out_attr
[i
].i
= in_attr
[i
].i
;
8681 case Tag_PCS_config
:
8682 if (out_attr
[i
].i
== 0)
8683 out_attr
[i
].i
= in_attr
[i
].i
;
8684 else if (in_attr
[i
].i
!= 0 && out_attr
[i
].i
!= 0)
8686 /* It's sometimes ok to mix different configs, so this is only
8689 (_("Warning: %B: Conflicting platform configuration"), ibfd
);
8692 case Tag_ABI_PCS_R9_use
:
8693 if (in_attr
[i
].i
!= out_attr
[i
].i
8694 && out_attr
[i
].i
!= AEABI_R9_unused
8695 && in_attr
[i
].i
!= AEABI_R9_unused
)
8698 (_("ERROR: %B: Conflicting use of R9"), ibfd
);
8701 if (out_attr
[i
].i
== AEABI_R9_unused
)
8702 out_attr
[i
].i
= in_attr
[i
].i
;
8704 case Tag_ABI_PCS_RW_data
:
8705 if (in_attr
[i
].i
== AEABI_PCS_RW_data_SBrel
8706 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_SB
8707 && out_attr
[Tag_ABI_PCS_R9_use
].i
!= AEABI_R9_unused
)
8710 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
8714 /* Use the smallest value specified. */
8715 if (in_attr
[i
].i
< out_attr
[i
].i
)
8716 out_attr
[i
].i
= in_attr
[i
].i
;
8718 case Tag_ABI_PCS_wchar_t
:
8719 if (out_attr
[i
].i
&& in_attr
[i
].i
&& out_attr
[i
].i
!= in_attr
[i
].i
8720 && !elf_arm_tdata (obfd
)->no_wchar_size_warning
)
8723 (_("warning: %B uses %u-byte wchar_t yet the output is to use %u-byte wchar_t; use of wchar_t values across objects may fail"),
8724 ibfd
, in_attr
[i
].i
, out_attr
[i
].i
);
8726 else if (in_attr
[i
].i
&& !out_attr
[i
].i
)
8727 out_attr
[i
].i
= in_attr
[i
].i
;
8729 case Tag_ABI_enum_size
:
8730 if (in_attr
[i
].i
!= AEABI_enum_unused
)
8732 if (out_attr
[i
].i
== AEABI_enum_unused
8733 || out_attr
[i
].i
== AEABI_enum_forced_wide
)
8735 /* The existing object is compatible with anything.
8736 Use whatever requirements the new object has. */
8737 out_attr
[i
].i
= in_attr
[i
].i
;
8739 else if (in_attr
[i
].i
!= AEABI_enum_forced_wide
8740 && out_attr
[i
].i
!= in_attr
[i
].i
8741 && !elf_arm_tdata (obfd
)->no_enum_size_warning
)
8743 static const char *aeabi_enum_names
[] =
8744 { "", "variable-size", "32-bit", "" };
8745 const char *in_name
=
8746 in_attr
[i
].i
< ARRAY_SIZE(aeabi_enum_names
)
8747 ? aeabi_enum_names
[in_attr
[i
].i
]
8749 const char *out_name
=
8750 out_attr
[i
].i
< ARRAY_SIZE(aeabi_enum_names
)
8751 ? aeabi_enum_names
[out_attr
[i
].i
]
8754 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
8755 ibfd
, in_name
, out_name
);
8759 case Tag_ABI_VFP_args
:
8762 case Tag_ABI_WMMX_args
:
8763 if (in_attr
[i
].i
!= out_attr
[i
].i
)
8766 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
8771 case Tag_compatibility
:
8772 /* Merged in target-independent code. */
8774 case Tag_ABI_HardFP_use
:
8775 /* 1 (SP) and 2 (DP) conflict, so combine to 3 (SP & DP). */
8776 if ((in_attr
[i
].i
== 1 && out_attr
[i
].i
== 2)
8777 || (in_attr
[i
].i
== 2 && out_attr
[i
].i
== 1))
8779 else if (in_attr
[i
].i
> out_attr
[i
].i
)
8780 out_attr
[i
].i
= in_attr
[i
].i
;
8782 case Tag_ABI_FP_16bit_format
:
8783 if (in_attr
[i
].i
!= 0 && out_attr
[i
].i
!= 0)
8785 if (in_attr
[i
].i
!= out_attr
[i
].i
)
8788 (_("ERROR: fp16 format mismatch between %B and %B"),
8793 if (in_attr
[i
].i
!= 0)
8794 out_attr
[i
].i
= in_attr
[i
].i
;
8797 case Tag_nodefaults
:
8798 /* This tag is set if it exists, but the value is unused (and is
8799 typically zero). We don't actually need to do anything here -
8800 the merge happens automatically when the type flags are merged
8803 case Tag_also_compatible_with
:
8804 /* Already done in Tag_CPU_arch. */
8806 case Tag_conformance
:
8807 /* Keep the attribute if it matches. Throw it away otherwise.
8808 No attribute means no claim to conform. */
8809 if (!in_attr
[i
].s
|| !out_attr
[i
].s
8810 || strcmp (in_attr
[i
].s
, out_attr
[i
].s
) != 0)
8811 out_attr
[i
].s
= NULL
;
8816 bfd
*err_bfd
= NULL
;
8818 /* The "known_obj_attributes" table does contain some undefined
8819 attributes. Ensure that there are unused. */
8820 if (out_attr
[i
].i
!= 0 || out_attr
[i
].s
!= NULL
)
8822 else if (in_attr
[i
].i
!= 0 || in_attr
[i
].s
!= NULL
)
8825 if (err_bfd
!= NULL
)
8827 /* Attribute numbers >=64 (mod 128) can be safely ignored. */
8831 (_("%B: Unknown mandatory EABI object attribute %d"),
8833 bfd_set_error (bfd_error_bad_value
);
8839 (_("Warning: %B: Unknown EABI object attribute %d"),
8844 /* Only pass on attributes that match in both inputs. */
8845 if (in_attr
[i
].i
!= out_attr
[i
].i
8846 || in_attr
[i
].s
!= out_attr
[i
].s
8847 || (in_attr
[i
].s
!= NULL
&& out_attr
[i
].s
!= NULL
8848 && strcmp (in_attr
[i
].s
, out_attr
[i
].s
) != 0))
8851 out_attr
[i
].s
= NULL
;
8856 /* If out_attr was copied from in_attr then it won't have a type yet. */
8857 if (in_attr
[i
].type
&& !out_attr
[i
].type
)
8858 out_attr
[i
].type
= in_attr
[i
].type
;
8861 /* Merge Tag_compatibility attributes and any common GNU ones. */
8862 _bfd_elf_merge_object_attributes (ibfd
, obfd
);
8864 /* Check for any attributes not known on ARM. */
8865 in_list
= elf_other_obj_attributes_proc (ibfd
);
8866 out_listp
= &elf_other_obj_attributes_proc (obfd
);
8867 out_list
= *out_listp
;
8869 for (; in_list
|| out_list
; )
8871 bfd
*err_bfd
= NULL
;
8874 /* The tags for each list are in numerical order. */
8875 /* If the tags are equal, then merge. */
8876 if (out_list
&& (!in_list
|| in_list
->tag
> out_list
->tag
))
8878 /* This attribute only exists in obfd. We can't merge, and we don't
8879 know what the tag means, so delete it. */
8881 err_tag
= out_list
->tag
;
8882 *out_listp
= out_list
->next
;
8883 out_list
= *out_listp
;
8885 else if (in_list
&& (!out_list
|| in_list
->tag
< out_list
->tag
))
8887 /* This attribute only exists in ibfd. We can't merge, and we don't
8888 know what the tag means, so ignore it. */
8890 err_tag
= in_list
->tag
;
8891 in_list
= in_list
->next
;
8893 else /* The tags are equal. */
8895 /* As present, all attributes in the list are unknown, and
8896 therefore can't be merged meaningfully. */
8898 err_tag
= out_list
->tag
;
8900 /* Only pass on attributes that match in both inputs. */
8901 if (in_list
->attr
.i
!= out_list
->attr
.i
8902 || in_list
->attr
.s
!= out_list
->attr
.s
8903 || (in_list
->attr
.s
&& out_list
->attr
.s
8904 && strcmp (in_list
->attr
.s
, out_list
->attr
.s
) != 0))
8906 /* No match. Delete the attribute. */
8907 *out_listp
= out_list
->next
;
8908 out_list
= *out_listp
;
8912 /* Matched. Keep the attribute and move to the next. */
8913 out_list
= out_list
->next
;
8914 in_list
= in_list
->next
;
8920 /* Attribute numbers >=64 (mod 128) can be safely ignored. */
8921 if ((err_tag
& 127) < 64)
8924 (_("%B: Unknown mandatory EABI object attribute %d"),
8926 bfd_set_error (bfd_error_bad_value
);
8932 (_("Warning: %B: Unknown EABI object attribute %d"),
8941 /* Return TRUE if the two EABI versions are incompatible. */
8944 elf32_arm_versions_compatible (unsigned iver
, unsigned over
)
8946 /* v4 and v5 are the same spec before and after it was released,
8947 so allow mixing them. */
8948 if ((iver
== EF_ARM_EABI_VER4
&& over
== EF_ARM_EABI_VER5
)
8949 || (iver
== EF_ARM_EABI_VER5
&& over
== EF_ARM_EABI_VER4
))
8952 return (iver
== over
);
8955 /* Merge backend specific data from an object file to the output
8956 object file when linking. */
8959 elf32_arm_merge_private_bfd_data (bfd
* ibfd
, bfd
* obfd
)
8963 bfd_boolean flags_compatible
= TRUE
;
8966 /* Check if we have the same endianess. */
8967 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
8970 if (! is_arm_elf (ibfd
) || ! is_arm_elf (obfd
))
8973 if (!elf32_arm_merge_eabi_attributes (ibfd
, obfd
))
8976 /* The input BFD must have had its flags initialised. */
8977 /* The following seems bogus to me -- The flags are initialized in
8978 the assembler but I don't think an elf_flags_init field is
8979 written into the object. */
8980 /* BFD_ASSERT (elf_flags_init (ibfd)); */
8982 in_flags
= elf_elfheader (ibfd
)->e_flags
;
8983 out_flags
= elf_elfheader (obfd
)->e_flags
;
8985 /* In theory there is no reason why we couldn't handle this. However
8986 in practice it isn't even close to working and there is no real
8987 reason to want it. */
8988 if (EF_ARM_EABI_VERSION (in_flags
) >= EF_ARM_EABI_VER4
8989 && !(ibfd
->flags
& DYNAMIC
)
8990 && (in_flags
& EF_ARM_BE8
))
8992 _bfd_error_handler (_("ERROR: %B is already in final BE8 format"),
8997 if (!elf_flags_init (obfd
))
8999 /* If the input is the default architecture and had the default
9000 flags then do not bother setting the flags for the output
9001 architecture, instead allow future merges to do this. If no
9002 future merges ever set these flags then they will retain their
9003 uninitialised values, which surprise surprise, correspond
9004 to the default values. */
9005 if (bfd_get_arch_info (ibfd
)->the_default
9006 && elf_elfheader (ibfd
)->e_flags
== 0)
9009 elf_flags_init (obfd
) = TRUE
;
9010 elf_elfheader (obfd
)->e_flags
= in_flags
;
9012 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
9013 && bfd_get_arch_info (obfd
)->the_default
)
9014 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
), bfd_get_mach (ibfd
));
9019 /* Determine what should happen if the input ARM architecture
9020 does not match the output ARM architecture. */
9021 if (! bfd_arm_merge_machines (ibfd
, obfd
))
9024 /* Identical flags must be compatible. */
9025 if (in_flags
== out_flags
)
9028 /* Check to see if the input BFD actually contains any sections. If
9029 not, its flags may not have been initialised either, but it
9030 cannot actually cause any incompatiblity. Do not short-circuit
9031 dynamic objects; their section list may be emptied by
9032 elf_link_add_object_symbols.
9034 Also check to see if there are no code sections in the input.
9035 In this case there is no need to check for code specific flags.
9036 XXX - do we need to worry about floating-point format compatability
9037 in data sections ? */
9038 if (!(ibfd
->flags
& DYNAMIC
))
9040 bfd_boolean null_input_bfd
= TRUE
;
9041 bfd_boolean only_data_sections
= TRUE
;
9043 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
9045 /* Ignore synthetic glue sections. */
9046 if (strcmp (sec
->name
, ".glue_7")
9047 && strcmp (sec
->name
, ".glue_7t"))
9049 if ((bfd_get_section_flags (ibfd
, sec
)
9050 & (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
9051 == (SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
))
9052 only_data_sections
= FALSE
;
9054 null_input_bfd
= FALSE
;
9059 if (null_input_bfd
|| only_data_sections
)
9063 /* Complain about various flag mismatches. */
9064 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags
),
9065 EF_ARM_EABI_VERSION (out_flags
)))
9068 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
9070 (in_flags
& EF_ARM_EABIMASK
) >> 24,
9071 (out_flags
& EF_ARM_EABIMASK
) >> 24);
9075 /* Not sure what needs to be checked for EABI versions >= 1. */
9076 /* VxWorks libraries do not use these flags. */
9077 if (get_elf_backend_data (obfd
) != &elf32_arm_vxworks_bed
9078 && get_elf_backend_data (ibfd
) != &elf32_arm_vxworks_bed
9079 && EF_ARM_EABI_VERSION (in_flags
) == EF_ARM_EABI_UNKNOWN
)
9081 if ((in_flags
& EF_ARM_APCS_26
) != (out_flags
& EF_ARM_APCS_26
))
9084 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
9086 in_flags
& EF_ARM_APCS_26
? 26 : 32,
9087 out_flags
& EF_ARM_APCS_26
? 26 : 32);
9088 flags_compatible
= FALSE
;
9091 if ((in_flags
& EF_ARM_APCS_FLOAT
) != (out_flags
& EF_ARM_APCS_FLOAT
))
9093 if (in_flags
& EF_ARM_APCS_FLOAT
)
9095 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
9099 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
9102 flags_compatible
= FALSE
;
9105 if ((in_flags
& EF_ARM_VFP_FLOAT
) != (out_flags
& EF_ARM_VFP_FLOAT
))
9107 if (in_flags
& EF_ARM_VFP_FLOAT
)
9109 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
9113 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
9116 flags_compatible
= FALSE
;
9119 if ((in_flags
& EF_ARM_MAVERICK_FLOAT
) != (out_flags
& EF_ARM_MAVERICK_FLOAT
))
9121 if (in_flags
& EF_ARM_MAVERICK_FLOAT
)
9123 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
9127 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
9130 flags_compatible
= FALSE
;
9133 #ifdef EF_ARM_SOFT_FLOAT
9134 if ((in_flags
& EF_ARM_SOFT_FLOAT
) != (out_flags
& EF_ARM_SOFT_FLOAT
))
9136 /* We can allow interworking between code that is VFP format
9137 layout, and uses either soft float or integer regs for
9138 passing floating point arguments and results. We already
9139 know that the APCS_FLOAT flags match; similarly for VFP
9141 if ((in_flags
& EF_ARM_APCS_FLOAT
) != 0
9142 || (in_flags
& EF_ARM_VFP_FLOAT
) == 0)
9144 if (in_flags
& EF_ARM_SOFT_FLOAT
)
9146 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
9150 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
9153 flags_compatible
= FALSE
;
9158 /* Interworking mismatch is only a warning. */
9159 if ((in_flags
& EF_ARM_INTERWORK
) != (out_flags
& EF_ARM_INTERWORK
))
9161 if (in_flags
& EF_ARM_INTERWORK
)
9164 (_("Warning: %B supports interworking, whereas %B does not"),
9170 (_("Warning: %B does not support interworking, whereas %B does"),
9176 return flags_compatible
;
9179 /* Display the flags field. */
9182 elf32_arm_print_private_bfd_data (bfd
*abfd
, void * ptr
)
9184 FILE * file
= (FILE *) ptr
;
9185 unsigned long flags
;
9187 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
9189 /* Print normal ELF private data. */
9190 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
9192 flags
= elf_elfheader (abfd
)->e_flags
;
9193 /* Ignore init flag - it may not be set, despite the flags field
9194 containing valid data. */
9196 /* xgettext:c-format */
9197 fprintf (file
, _("private flags = %lx:"), elf_elfheader (abfd
)->e_flags
);
9199 switch (EF_ARM_EABI_VERSION (flags
))
9201 case EF_ARM_EABI_UNKNOWN
:
9202 /* The following flag bits are GNU extensions and not part of the
9203 official ARM ELF extended ABI. Hence they are only decoded if
9204 the EABI version is not set. */
9205 if (flags
& EF_ARM_INTERWORK
)
9206 fprintf (file
, _(" [interworking enabled]"));
9208 if (flags
& EF_ARM_APCS_26
)
9209 fprintf (file
, " [APCS-26]");
9211 fprintf (file
, " [APCS-32]");
9213 if (flags
& EF_ARM_VFP_FLOAT
)
9214 fprintf (file
, _(" [VFP float format]"));
9215 else if (flags
& EF_ARM_MAVERICK_FLOAT
)
9216 fprintf (file
, _(" [Maverick float format]"));
9218 fprintf (file
, _(" [FPA float format]"));
9220 if (flags
& EF_ARM_APCS_FLOAT
)
9221 fprintf (file
, _(" [floats passed in float registers]"));
9223 if (flags
& EF_ARM_PIC
)
9224 fprintf (file
, _(" [position independent]"));
9226 if (flags
& EF_ARM_NEW_ABI
)
9227 fprintf (file
, _(" [new ABI]"));
9229 if (flags
& EF_ARM_OLD_ABI
)
9230 fprintf (file
, _(" [old ABI]"));
9232 if (flags
& EF_ARM_SOFT_FLOAT
)
9233 fprintf (file
, _(" [software FP]"));
9235 flags
&= ~(EF_ARM_INTERWORK
| EF_ARM_APCS_26
| EF_ARM_APCS_FLOAT
9236 | EF_ARM_PIC
| EF_ARM_NEW_ABI
| EF_ARM_OLD_ABI
9237 | EF_ARM_SOFT_FLOAT
| EF_ARM_VFP_FLOAT
9238 | EF_ARM_MAVERICK_FLOAT
);
9241 case EF_ARM_EABI_VER1
:
9242 fprintf (file
, _(" [Version1 EABI]"));
9244 if (flags
& EF_ARM_SYMSARESORTED
)
9245 fprintf (file
, _(" [sorted symbol table]"));
9247 fprintf (file
, _(" [unsorted symbol table]"));
9249 flags
&= ~ EF_ARM_SYMSARESORTED
;
9252 case EF_ARM_EABI_VER2
:
9253 fprintf (file
, _(" [Version2 EABI]"));
9255 if (flags
& EF_ARM_SYMSARESORTED
)
9256 fprintf (file
, _(" [sorted symbol table]"));
9258 fprintf (file
, _(" [unsorted symbol table]"));
9260 if (flags
& EF_ARM_DYNSYMSUSESEGIDX
)
9261 fprintf (file
, _(" [dynamic symbols use segment index]"));
9263 if (flags
& EF_ARM_MAPSYMSFIRST
)
9264 fprintf (file
, _(" [mapping symbols precede others]"));
9266 flags
&= ~(EF_ARM_SYMSARESORTED
| EF_ARM_DYNSYMSUSESEGIDX
9267 | EF_ARM_MAPSYMSFIRST
);
9270 case EF_ARM_EABI_VER3
:
9271 fprintf (file
, _(" [Version3 EABI]"));
9274 case EF_ARM_EABI_VER4
:
9275 fprintf (file
, _(" [Version4 EABI]"));
9278 case EF_ARM_EABI_VER5
:
9279 fprintf (file
, _(" [Version5 EABI]"));
9281 if (flags
& EF_ARM_BE8
)
9282 fprintf (file
, _(" [BE8]"));
9284 if (flags
& EF_ARM_LE8
)
9285 fprintf (file
, _(" [LE8]"));
9287 flags
&= ~(EF_ARM_LE8
| EF_ARM_BE8
);
9291 fprintf (file
, _(" <EABI version unrecognised>"));
9295 flags
&= ~ EF_ARM_EABIMASK
;
9297 if (flags
& EF_ARM_RELEXEC
)
9298 fprintf (file
, _(" [relocatable executable]"));
9300 if (flags
& EF_ARM_HASENTRY
)
9301 fprintf (file
, _(" [has entry point]"));
9303 flags
&= ~ (EF_ARM_RELEXEC
| EF_ARM_HASENTRY
);
9306 fprintf (file
, _("<Unrecognised flag bits set>"));
9314 elf32_arm_get_symbol_type (Elf_Internal_Sym
* elf_sym
, int type
)
9316 switch (ELF_ST_TYPE (elf_sym
->st_info
))
9319 return ELF_ST_TYPE (elf_sym
->st_info
);
9322 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
9323 This allows us to distinguish between data used by Thumb instructions
9324 and non-data (which is probably code) inside Thumb regions of an
9326 if (type
!= STT_OBJECT
&& type
!= STT_TLS
)
9327 return ELF_ST_TYPE (elf_sym
->st_info
);
9338 elf32_arm_gc_mark_hook (asection
*sec
,
9339 struct bfd_link_info
*info
,
9340 Elf_Internal_Rela
*rel
,
9341 struct elf_link_hash_entry
*h
,
9342 Elf_Internal_Sym
*sym
)
9345 switch (ELF32_R_TYPE (rel
->r_info
))
9347 case R_ARM_GNU_VTINHERIT
:
9348 case R_ARM_GNU_VTENTRY
:
9352 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
9355 /* Update the got entry reference counts for the section being removed. */
9358 elf32_arm_gc_sweep_hook (bfd
* abfd
,
9359 struct bfd_link_info
* info
,
9361 const Elf_Internal_Rela
* relocs
)
9363 Elf_Internal_Shdr
*symtab_hdr
;
9364 struct elf_link_hash_entry
**sym_hashes
;
9365 bfd_signed_vma
*local_got_refcounts
;
9366 const Elf_Internal_Rela
*rel
, *relend
;
9367 struct elf32_arm_link_hash_table
* globals
;
9369 if (info
->relocatable
)
9372 globals
= elf32_arm_hash_table (info
);
9374 elf_section_data (sec
)->local_dynrel
= NULL
;
9376 symtab_hdr
= & elf_symtab_hdr (abfd
);
9377 sym_hashes
= elf_sym_hashes (abfd
);
9378 local_got_refcounts
= elf_local_got_refcounts (abfd
);
9380 check_use_blx (globals
);
9382 relend
= relocs
+ sec
->reloc_count
;
9383 for (rel
= relocs
; rel
< relend
; rel
++)
9385 unsigned long r_symndx
;
9386 struct elf_link_hash_entry
*h
= NULL
;
9389 r_symndx
= ELF32_R_SYM (rel
->r_info
);
9390 if (r_symndx
>= symtab_hdr
->sh_info
)
9392 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
9393 while (h
->root
.type
== bfd_link_hash_indirect
9394 || h
->root
.type
== bfd_link_hash_warning
)
9395 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9398 r_type
= ELF32_R_TYPE (rel
->r_info
);
9399 r_type
= arm_real_reloc_type (globals
, r_type
);
9403 case R_ARM_GOT_PREL
:
9404 case R_ARM_TLS_GD32
:
9405 case R_ARM_TLS_IE32
:
9408 if (h
->got
.refcount
> 0)
9409 h
->got
.refcount
-= 1;
9411 else if (local_got_refcounts
!= NULL
)
9413 if (local_got_refcounts
[r_symndx
] > 0)
9414 local_got_refcounts
[r_symndx
] -= 1;
9418 case R_ARM_TLS_LDM32
:
9419 elf32_arm_hash_table (info
)->tls_ldm_got
.refcount
-= 1;
9423 case R_ARM_ABS32_NOI
:
9425 case R_ARM_REL32_NOI
:
9431 case R_ARM_THM_CALL
:
9432 case R_ARM_THM_JUMP24
:
9433 case R_ARM_THM_JUMP19
:
9434 case R_ARM_MOVW_ABS_NC
:
9435 case R_ARM_MOVT_ABS
:
9436 case R_ARM_MOVW_PREL_NC
:
9437 case R_ARM_MOVT_PREL
:
9438 case R_ARM_THM_MOVW_ABS_NC
:
9439 case R_ARM_THM_MOVT_ABS
:
9440 case R_ARM_THM_MOVW_PREL_NC
:
9441 case R_ARM_THM_MOVT_PREL
:
9442 /* Should the interworking branches be here also? */
9446 struct elf32_arm_link_hash_entry
*eh
;
9447 struct elf32_arm_relocs_copied
**pp
;
9448 struct elf32_arm_relocs_copied
*p
;
9450 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9452 if (h
->plt
.refcount
> 0)
9454 h
->plt
.refcount
-= 1;
9455 if (r_type
== R_ARM_THM_CALL
)
9456 eh
->plt_maybe_thumb_refcount
--;
9458 if (r_type
== R_ARM_THM_JUMP24
9459 || r_type
== R_ARM_THM_JUMP19
)
9460 eh
->plt_thumb_refcount
--;
9463 if (r_type
== R_ARM_ABS32
9464 || r_type
== R_ARM_REL32
9465 || r_type
== R_ARM_ABS32_NOI
9466 || r_type
== R_ARM_REL32_NOI
)
9468 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
;
9470 if (p
->section
== sec
)
9473 if (ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32
9474 || ELF32_R_TYPE (rel
->r_info
) == R_ARM_REL32_NOI
)
9492 /* Look through the relocs for a section during the first phase. */
9495 elf32_arm_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
9496 asection
*sec
, const Elf_Internal_Rela
*relocs
)
9498 Elf_Internal_Shdr
*symtab_hdr
;
9499 struct elf_link_hash_entry
**sym_hashes
;
9500 const Elf_Internal_Rela
*rel
;
9501 const Elf_Internal_Rela
*rel_end
;
9504 bfd_vma
*local_got_offsets
;
9505 struct elf32_arm_link_hash_table
*htab
;
9506 bfd_boolean needs_plt
;
9508 if (info
->relocatable
)
9511 BFD_ASSERT (is_arm_elf (abfd
));
9513 htab
= elf32_arm_hash_table (info
);
9516 /* Create dynamic sections for relocatable executables so that we can
9517 copy relocations. */
9518 if (htab
->root
.is_relocatable_executable
9519 && ! htab
->root
.dynamic_sections_created
)
9521 if (! _bfd_elf_link_create_dynamic_sections (abfd
, info
))
9525 dynobj
= elf_hash_table (info
)->dynobj
;
9526 local_got_offsets
= elf_local_got_offsets (abfd
);
9528 symtab_hdr
= & elf_symtab_hdr (abfd
);
9529 sym_hashes
= elf_sym_hashes (abfd
);
9531 rel_end
= relocs
+ sec
->reloc_count
;
9532 for (rel
= relocs
; rel
< rel_end
; rel
++)
9534 struct elf_link_hash_entry
*h
;
9535 struct elf32_arm_link_hash_entry
*eh
;
9536 unsigned long r_symndx
;
9539 r_symndx
= ELF32_R_SYM (rel
->r_info
);
9540 r_type
= ELF32_R_TYPE (rel
->r_info
);
9541 r_type
= arm_real_reloc_type (htab
, r_type
);
9543 if (r_symndx
>= NUM_SHDR_ENTRIES (symtab_hdr
))
9545 (*_bfd_error_handler
) (_("%B: bad symbol index: %d"), abfd
,
9550 if (r_symndx
< symtab_hdr
->sh_info
)
9554 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
9555 while (h
->root
.type
== bfd_link_hash_indirect
9556 || h
->root
.type
== bfd_link_hash_warning
)
9557 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9560 eh
= (struct elf32_arm_link_hash_entry
*) h
;
9565 case R_ARM_GOT_PREL
:
9566 case R_ARM_TLS_GD32
:
9567 case R_ARM_TLS_IE32
:
9568 /* This symbol requires a global offset table entry. */
9570 int tls_type
, old_tls_type
;
9574 case R_ARM_TLS_GD32
: tls_type
= GOT_TLS_GD
; break;
9575 case R_ARM_TLS_IE32
: tls_type
= GOT_TLS_IE
; break;
9576 default: tls_type
= GOT_NORMAL
; break;
9582 old_tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
9586 bfd_signed_vma
*local_got_refcounts
;
9588 /* This is a global offset table entry for a local symbol. */
9589 local_got_refcounts
= elf_local_got_refcounts (abfd
);
9590 if (local_got_refcounts
== NULL
)
9594 size
= symtab_hdr
->sh_info
;
9595 size
*= (sizeof (bfd_signed_vma
) + sizeof (char));
9596 local_got_refcounts
= bfd_zalloc (abfd
, size
);
9597 if (local_got_refcounts
== NULL
)
9599 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
9600 elf32_arm_local_got_tls_type (abfd
)
9601 = (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
9603 local_got_refcounts
[r_symndx
] += 1;
9604 old_tls_type
= elf32_arm_local_got_tls_type (abfd
) [r_symndx
];
9607 /* We will already have issued an error message if there is a
9608 TLS / non-TLS mismatch, based on the symbol type. We don't
9609 support any linker relaxations. So just combine any TLS
9611 if (old_tls_type
!= GOT_UNKNOWN
&& old_tls_type
!= GOT_NORMAL
9612 && tls_type
!= GOT_NORMAL
)
9613 tls_type
|= old_tls_type
;
9615 if (old_tls_type
!= tls_type
)
9618 elf32_arm_hash_entry (h
)->tls_type
= tls_type
;
9620 elf32_arm_local_got_tls_type (abfd
) [r_symndx
] = tls_type
;
9625 case R_ARM_TLS_LDM32
:
9626 if (r_type
== R_ARM_TLS_LDM32
)
9627 htab
->tls_ldm_got
.refcount
++;
9630 case R_ARM_GOTOFF32
:
9632 if (htab
->sgot
== NULL
)
9634 if (htab
->root
.dynobj
== NULL
)
9635 htab
->root
.dynobj
= abfd
;
9636 if (!create_got_section (htab
->root
.dynobj
, info
))
9642 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
9643 ldr __GOTT_INDEX__ offsets. */
9644 if (!htab
->vxworks_p
)
9653 case R_ARM_THM_CALL
:
9654 case R_ARM_THM_JUMP24
:
9655 case R_ARM_THM_JUMP19
:
9660 case R_ARM_ABS32_NOI
:
9662 case R_ARM_REL32_NOI
:
9663 case R_ARM_MOVW_ABS_NC
:
9664 case R_ARM_MOVT_ABS
:
9665 case R_ARM_MOVW_PREL_NC
:
9666 case R_ARM_MOVT_PREL
:
9667 case R_ARM_THM_MOVW_ABS_NC
:
9668 case R_ARM_THM_MOVT_ABS
:
9669 case R_ARM_THM_MOVW_PREL_NC
:
9670 case R_ARM_THM_MOVT_PREL
:
9674 /* Should the interworking branches be listed here? */
9677 /* If this reloc is in a read-only section, we might
9678 need a copy reloc. We can't check reliably at this
9679 stage whether the section is read-only, as input
9680 sections have not yet been mapped to output sections.
9681 Tentatively set the flag for now, and correct in
9682 adjust_dynamic_symbol. */
9686 /* We may need a .plt entry if the function this reloc
9687 refers to is in a different object. We can't tell for
9688 sure yet, because something later might force the
9693 /* If we create a PLT entry, this relocation will reference
9694 it, even if it's an ABS32 relocation. */
9695 h
->plt
.refcount
+= 1;
9697 /* It's too early to use htab->use_blx here, so we have to
9698 record possible blx references separately from
9699 relocs that definitely need a thumb stub. */
9701 if (r_type
== R_ARM_THM_CALL
)
9702 eh
->plt_maybe_thumb_refcount
+= 1;
9704 if (r_type
== R_ARM_THM_JUMP24
9705 || r_type
== R_ARM_THM_JUMP19
)
9706 eh
->plt_thumb_refcount
+= 1;
9709 /* If we are creating a shared library or relocatable executable,
9710 and this is a reloc against a global symbol, or a non PC
9711 relative reloc against a local symbol, then we need to copy
9712 the reloc into the shared library. However, if we are linking
9713 with -Bsymbolic, we do not need to copy a reloc against a
9714 global symbol which is defined in an object we are
9715 including in the link (i.e., DEF_REGULAR is set). At
9716 this point we have not seen all the input files, so it is
9717 possible that DEF_REGULAR is not set now but will be set
9718 later (it is never cleared). We account for that
9719 possibility below by storing information in the
9720 relocs_copied field of the hash table entry. */
9721 if ((info
->shared
|| htab
->root
.is_relocatable_executable
)
9722 && (sec
->flags
& SEC_ALLOC
) != 0
9723 && ((r_type
== R_ARM_ABS32
|| r_type
== R_ARM_ABS32_NOI
)
9724 || (h
!= NULL
&& ! h
->needs_plt
9725 && (! info
->symbolic
|| ! h
->def_regular
))))
9727 struct elf32_arm_relocs_copied
*p
, **head
;
9729 /* When creating a shared object, we must copy these
9730 reloc types into the output file. We create a reloc
9731 section in dynobj and make room for this reloc. */
9734 sreloc
= _bfd_elf_make_dynamic_reloc_section
9735 (sec
, dynobj
, 2, abfd
, ! htab
->use_rel
);
9740 /* BPABI objects never have dynamic relocations mapped. */
9741 if (! htab
->symbian_p
)
9745 flags
= bfd_get_section_flags (dynobj
, sreloc
);
9746 flags
|= (SEC_LOAD
| SEC_ALLOC
);
9747 bfd_set_section_flags (dynobj
, sreloc
, flags
);
9751 /* If this is a global symbol, we count the number of
9752 relocations we need for this symbol. */
9755 head
= &((struct elf32_arm_link_hash_entry
*) h
)->relocs_copied
;
9759 /* Track dynamic relocs needed for local syms too.
9760 We really need local syms available to do this
9766 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
9771 vpp
= &elf_section_data (s
)->local_dynrel
;
9772 head
= (struct elf32_arm_relocs_copied
**) vpp
;
9776 if (p
== NULL
|| p
->section
!= sec
)
9778 bfd_size_type amt
= sizeof *p
;
9780 p
= bfd_alloc (htab
->root
.dynobj
, amt
);
9790 if (r_type
== R_ARM_REL32
|| r_type
== R_ARM_REL32_NOI
)
9796 /* This relocation describes the C++ object vtable hierarchy.
9797 Reconstruct it for later use during GC. */
9798 case R_ARM_GNU_VTINHERIT
:
9799 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
9803 /* This relocation describes which C++ vtable entries are actually
9804 used. Record for later use during GC. */
9805 case R_ARM_GNU_VTENTRY
:
9806 BFD_ASSERT (h
!= NULL
);
9808 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
9817 /* Unwinding tables are not referenced directly. This pass marks them as
9818 required if the corresponding code section is marked. */
9821 elf32_arm_gc_mark_extra_sections (struct bfd_link_info
*info
,
9822 elf_gc_mark_hook_fn gc_mark_hook
)
9825 Elf_Internal_Shdr
**elf_shdrp
;
9828 /* Marking EH data may cause additional code sections to be marked,
9829 requiring multiple passes. */
9834 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
9838 if (! is_arm_elf (sub
))
9841 elf_shdrp
= elf_elfsections (sub
);
9842 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
9844 Elf_Internal_Shdr
*hdr
;
9846 hdr
= &elf_section_data (o
)->this_hdr
;
9847 if (hdr
->sh_type
== SHT_ARM_EXIDX
9849 && hdr
->sh_link
< elf_numsections (sub
)
9851 && elf_shdrp
[hdr
->sh_link
]->bfd_section
->gc_mark
)
9854 if (!_bfd_elf_gc_mark (info
, o
, gc_mark_hook
))
9864 /* Treat mapping symbols as special target symbols. */
9867 elf32_arm_is_target_special_symbol (bfd
* abfd ATTRIBUTE_UNUSED
, asymbol
* sym
)
9869 return bfd_is_arm_special_symbol_name (sym
->name
,
9870 BFD_ARM_SPECIAL_SYM_TYPE_ANY
);
9873 /* This is a copy of elf_find_function() from elf.c except that
9874 ARM mapping symbols are ignored when looking for function names
9875 and STT_ARM_TFUNC is considered to a function type. */
9878 arm_elf_find_function (bfd
* abfd ATTRIBUTE_UNUSED
,
9882 const char ** filename_ptr
,
9883 const char ** functionname_ptr
)
9885 const char * filename
= NULL
;
9886 asymbol
* func
= NULL
;
9887 bfd_vma low_func
= 0;
9890 for (p
= symbols
; *p
!= NULL
; p
++)
9894 q
= (elf_symbol_type
*) *p
;
9896 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
9901 filename
= bfd_asymbol_name (&q
->symbol
);
9906 /* Skip mapping symbols. */
9907 if ((q
->symbol
.flags
& BSF_LOCAL
)
9908 && bfd_is_arm_special_symbol_name (q
->symbol
.name
,
9909 BFD_ARM_SPECIAL_SYM_TYPE_ANY
))
9912 if (bfd_get_section (&q
->symbol
) == section
9913 && q
->symbol
.value
>= low_func
9914 && q
->symbol
.value
<= offset
)
9916 func
= (asymbol
*) q
;
9917 low_func
= q
->symbol
.value
;
9927 *filename_ptr
= filename
;
9928 if (functionname_ptr
)
9929 *functionname_ptr
= bfd_asymbol_name (func
);
9935 /* Find the nearest line to a particular section and offset, for error
9936 reporting. This code is a duplicate of the code in elf.c, except
9937 that it uses arm_elf_find_function. */
9940 elf32_arm_find_nearest_line (bfd
* abfd
,
9944 const char ** filename_ptr
,
9945 const char ** functionname_ptr
,
9946 unsigned int * line_ptr
)
9948 bfd_boolean found
= FALSE
;
9950 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
9952 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
9953 filename_ptr
, functionname_ptr
,
9955 & elf_tdata (abfd
)->dwarf2_find_line_info
))
9957 if (!*functionname_ptr
)
9958 arm_elf_find_function (abfd
, section
, symbols
, offset
,
9959 *filename_ptr
? NULL
: filename_ptr
,
9965 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
9966 & found
, filename_ptr
,
9967 functionname_ptr
, line_ptr
,
9968 & elf_tdata (abfd
)->line_info
))
9971 if (found
&& (*functionname_ptr
|| *line_ptr
))
9974 if (symbols
== NULL
)
9977 if (! arm_elf_find_function (abfd
, section
, symbols
, offset
,
9978 filename_ptr
, functionname_ptr
))
9986 elf32_arm_find_inliner_info (bfd
* abfd
,
9987 const char ** filename_ptr
,
9988 const char ** functionname_ptr
,
9989 unsigned int * line_ptr
)
9992 found
= _bfd_dwarf2_find_inliner_info (abfd
, filename_ptr
,
9993 functionname_ptr
, line_ptr
,
9994 & elf_tdata (abfd
)->dwarf2_find_line_info
);
9998 /* Adjust a symbol defined by a dynamic object and referenced by a
9999 regular object. The current definition is in some section of the
10000 dynamic object, but we're not including those sections. We have to
10001 change the definition to something the rest of the link can
10005 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info
* info
,
10006 struct elf_link_hash_entry
* h
)
10010 struct elf32_arm_link_hash_entry
* eh
;
10011 struct elf32_arm_link_hash_table
*globals
;
10013 globals
= elf32_arm_hash_table (info
);
10014 dynobj
= elf_hash_table (info
)->dynobj
;
10016 /* Make sure we know what is going on here. */
10017 BFD_ASSERT (dynobj
!= NULL
10019 || h
->u
.weakdef
!= NULL
10022 && !h
->def_regular
)));
10024 eh
= (struct elf32_arm_link_hash_entry
*) h
;
10026 /* If this is a function, put it in the procedure linkage table. We
10027 will fill in the contents of the procedure linkage table later,
10028 when we know the address of the .got section. */
10029 if (h
->type
== STT_FUNC
|| h
->type
== STT_ARM_TFUNC
10032 if (h
->plt
.refcount
<= 0
10033 || SYMBOL_CALLS_LOCAL (info
, h
)
10034 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
10035 && h
->root
.type
== bfd_link_hash_undefweak
))
10037 /* This case can occur if we saw a PLT32 reloc in an input
10038 file, but the symbol was never referred to by a dynamic
10039 object, or if all references were garbage collected. In
10040 such a case, we don't actually need to build a procedure
10041 linkage table, and we can just do a PC24 reloc instead. */
10042 h
->plt
.offset
= (bfd_vma
) -1;
10043 eh
->plt_thumb_refcount
= 0;
10044 eh
->plt_maybe_thumb_refcount
= 0;
10052 /* It's possible that we incorrectly decided a .plt reloc was
10053 needed for an R_ARM_PC24 or similar reloc to a non-function sym
10054 in check_relocs. We can't decide accurately between function
10055 and non-function syms in check-relocs; Objects loaded later in
10056 the link may change h->type. So fix it now. */
10057 h
->plt
.offset
= (bfd_vma
) -1;
10058 eh
->plt_thumb_refcount
= 0;
10059 eh
->plt_maybe_thumb_refcount
= 0;
10062 /* If this is a weak symbol, and there is a real definition, the
10063 processor independent code will have arranged for us to see the
10064 real definition first, and we can just use the same value. */
10065 if (h
->u
.weakdef
!= NULL
)
10067 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
10068 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
10069 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
10070 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
10074 /* If there are no non-GOT references, we do not need a copy
10076 if (!h
->non_got_ref
)
10079 /* This is a reference to a symbol defined by a dynamic object which
10080 is not a function. */
10082 /* If we are creating a shared library, we must presume that the
10083 only references to the symbol are via the global offset table.
10084 For such cases we need not do anything here; the relocations will
10085 be handled correctly by relocate_section. Relocatable executables
10086 can reference data in shared objects directly, so we don't need to
10087 do anything here. */
10088 if (info
->shared
|| globals
->root
.is_relocatable_executable
)
10093 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
10094 h
->root
.root
.string
);
10098 /* We must allocate the symbol in our .dynbss section, which will
10099 become part of the .bss section of the executable. There will be
10100 an entry for this symbol in the .dynsym section. The dynamic
10101 object will contain position independent code, so all references
10102 from the dynamic object to this symbol will go through the global
10103 offset table. The dynamic linker will use the .dynsym entry to
10104 determine the address it must put in the global offset table, so
10105 both the dynamic object and the regular object will refer to the
10106 same memory location for the variable. */
10107 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
10108 BFD_ASSERT (s
!= NULL
);
10110 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
10111 copy the initial value out of the dynamic object and into the
10112 runtime process image. We need to remember the offset into the
10113 .rel(a).bss section we are going to use. */
10114 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
10118 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (globals
, ".bss"));
10119 BFD_ASSERT (srel
!= NULL
);
10120 srel
->size
+= RELOC_SIZE (globals
);
10124 return _bfd_elf_adjust_dynamic_copy (h
, s
);
10127 /* Allocate space in .plt, .got and associated reloc sections for
10131 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void * inf
)
10133 struct bfd_link_info
*info
;
10134 struct elf32_arm_link_hash_table
*htab
;
10135 struct elf32_arm_link_hash_entry
*eh
;
10136 struct elf32_arm_relocs_copied
*p
;
10137 bfd_signed_vma thumb_refs
;
10139 eh
= (struct elf32_arm_link_hash_entry
*) h
;
10141 if (h
->root
.type
== bfd_link_hash_indirect
)
10144 if (h
->root
.type
== bfd_link_hash_warning
)
10145 /* When warning symbols are created, they **replace** the "real"
10146 entry in the hash table, thus we never get to see the real
10147 symbol in a hash traversal. So look at it now. */
10148 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10150 info
= (struct bfd_link_info
*) inf
;
10151 htab
= elf32_arm_hash_table (info
);
10153 if (htab
->root
.dynamic_sections_created
10154 && h
->plt
.refcount
> 0)
10156 /* Make sure this symbol is output as a dynamic symbol.
10157 Undefined weak syms won't yet be marked as dynamic. */
10158 if (h
->dynindx
== -1
10159 && !h
->forced_local
)
10161 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
10166 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
10168 asection
*s
= htab
->splt
;
10170 /* If this is the first .plt entry, make room for the special
10173 s
->size
+= htab
->plt_header_size
;
10175 h
->plt
.offset
= s
->size
;
10177 /* If we will insert a Thumb trampoline before this PLT, leave room
10179 thumb_refs
= eh
->plt_thumb_refcount
;
10180 if (!htab
->use_blx
)
10181 thumb_refs
+= eh
->plt_maybe_thumb_refcount
;
10183 if (thumb_refs
> 0)
10185 h
->plt
.offset
+= PLT_THUMB_STUB_SIZE
;
10186 s
->size
+= PLT_THUMB_STUB_SIZE
;
10189 /* If this symbol is not defined in a regular file, and we are
10190 not generating a shared library, then set the symbol to this
10191 location in the .plt. This is required to make function
10192 pointers compare as equal between the normal executable and
10193 the shared library. */
10195 && !h
->def_regular
)
10197 h
->root
.u
.def
.section
= s
;
10198 h
->root
.u
.def
.value
= h
->plt
.offset
;
10200 /* Make sure the function is not marked as Thumb, in case
10201 it is the target of an ABS32 relocation, which will
10202 point to the PLT entry. */
10203 if (ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
)
10204 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
10207 /* Make room for this entry. */
10208 s
->size
+= htab
->plt_entry_size
;
10210 if (!htab
->symbian_p
)
10212 /* We also need to make an entry in the .got.plt section, which
10213 will be placed in the .got section by the linker script. */
10214 eh
->plt_got_offset
= htab
->sgotplt
->size
;
10215 htab
->sgotplt
->size
+= 4;
10218 /* We also need to make an entry in the .rel(a).plt section. */
10219 htab
->srelplt
->size
+= RELOC_SIZE (htab
);
10221 /* VxWorks executables have a second set of relocations for
10222 each PLT entry. They go in a separate relocation section,
10223 which is processed by the kernel loader. */
10224 if (htab
->vxworks_p
&& !info
->shared
)
10226 /* There is a relocation for the initial PLT entry:
10227 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
10228 if (h
->plt
.offset
== htab
->plt_header_size
)
10229 htab
->srelplt2
->size
+= RELOC_SIZE (htab
);
10231 /* There are two extra relocations for each subsequent
10232 PLT entry: an R_ARM_32 relocation for the GOT entry,
10233 and an R_ARM_32 relocation for the PLT entry. */
10234 htab
->srelplt2
->size
+= RELOC_SIZE (htab
) * 2;
10239 h
->plt
.offset
= (bfd_vma
) -1;
10245 h
->plt
.offset
= (bfd_vma
) -1;
10249 if (h
->got
.refcount
> 0)
10253 int tls_type
= elf32_arm_hash_entry (h
)->tls_type
;
10256 /* Make sure this symbol is output as a dynamic symbol.
10257 Undefined weak syms won't yet be marked as dynamic. */
10258 if (h
->dynindx
== -1
10259 && !h
->forced_local
)
10261 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
10265 if (!htab
->symbian_p
)
10268 h
->got
.offset
= s
->size
;
10270 if (tls_type
== GOT_UNKNOWN
)
10273 if (tls_type
== GOT_NORMAL
)
10274 /* Non-TLS symbols need one GOT slot. */
10278 if (tls_type
& GOT_TLS_GD
)
10279 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
10281 if (tls_type
& GOT_TLS_IE
)
10282 /* R_ARM_TLS_IE32 needs one GOT slot. */
10286 dyn
= htab
->root
.dynamic_sections_created
;
10289 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
10291 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
10294 if (tls_type
!= GOT_NORMAL
10295 && (info
->shared
|| indx
!= 0)
10296 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
10297 || h
->root
.type
!= bfd_link_hash_undefweak
))
10299 if (tls_type
& GOT_TLS_IE
)
10300 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
10302 if (tls_type
& GOT_TLS_GD
)
10303 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
10305 if ((tls_type
& GOT_TLS_GD
) && indx
!= 0)
10306 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
10308 else if ((ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
10309 || h
->root
.type
!= bfd_link_hash_undefweak
)
10311 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
)))
10312 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
10316 h
->got
.offset
= (bfd_vma
) -1;
10318 /* Allocate stubs for exported Thumb functions on v4t. */
10319 if (!htab
->use_blx
&& h
->dynindx
!= -1
10321 && ELF_ST_TYPE (h
->type
) == STT_ARM_TFUNC
10322 && ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
)
10324 struct elf_link_hash_entry
* th
;
10325 struct bfd_link_hash_entry
* bh
;
10326 struct elf_link_hash_entry
* myh
;
10330 /* Create a new symbol to regist the real location of the function. */
10331 s
= h
->root
.u
.def
.section
;
10332 sprintf (name
, "__real_%s", h
->root
.root
.string
);
10333 _bfd_generic_link_add_one_symbol (info
, s
->owner
,
10334 name
, BSF_GLOBAL
, s
,
10335 h
->root
.u
.def
.value
,
10336 NULL
, TRUE
, FALSE
, &bh
);
10338 myh
= (struct elf_link_hash_entry
*) bh
;
10339 myh
->type
= ELF_ST_INFO (STB_LOCAL
, STT_ARM_TFUNC
);
10340 myh
->forced_local
= 1;
10341 eh
->export_glue
= myh
;
10342 th
= record_arm_to_thumb_glue (info
, h
);
10343 /* Point the symbol at the stub. */
10344 h
->type
= ELF_ST_INFO (ELF_ST_BIND (h
->type
), STT_FUNC
);
10345 h
->root
.u
.def
.section
= th
->root
.u
.def
.section
;
10346 h
->root
.u
.def
.value
= th
->root
.u
.def
.value
& ~1;
10349 if (eh
->relocs_copied
== NULL
)
10352 /* In the shared -Bsymbolic case, discard space allocated for
10353 dynamic pc-relative relocs against symbols which turn out to be
10354 defined in regular objects. For the normal shared case, discard
10355 space for pc-relative relocs that have become local due to symbol
10356 visibility changes. */
10358 if (info
->shared
|| htab
->root
.is_relocatable_executable
)
10360 /* The only relocs that use pc_count are R_ARM_REL32 and
10361 R_ARM_REL32_NOI, which will appear on something like
10362 ".long foo - .". We want calls to protected symbols to resolve
10363 directly to the function rather than going via the plt. If people
10364 want function pointer comparisons to work as expected then they
10365 should avoid writing assembly like ".long foo - .". */
10366 if (SYMBOL_CALLS_LOCAL (info
, h
))
10368 struct elf32_arm_relocs_copied
**pp
;
10370 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
; )
10372 p
->count
-= p
->pc_count
;
10381 if (elf32_arm_hash_table (info
)->vxworks_p
)
10383 struct elf32_arm_relocs_copied
**pp
;
10385 for (pp
= &eh
->relocs_copied
; (p
= *pp
) != NULL
; )
10387 if (strcmp (p
->section
->output_section
->name
, ".tls_vars") == 0)
10394 /* Also discard relocs on undefined weak syms with non-default
10396 if (eh
->relocs_copied
!= NULL
10397 && h
->root
.type
== bfd_link_hash_undefweak
)
10399 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
10400 eh
->relocs_copied
= NULL
;
10402 /* Make sure undefined weak symbols are output as a dynamic
10404 else if (h
->dynindx
== -1
10405 && !h
->forced_local
)
10407 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
10412 else if (htab
->root
.is_relocatable_executable
&& h
->dynindx
== -1
10413 && h
->root
.type
== bfd_link_hash_new
)
10415 /* Output absolute symbols so that we can create relocations
10416 against them. For normal symbols we output a relocation
10417 against the section that contains them. */
10418 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
10425 /* For the non-shared case, discard space for relocs against
10426 symbols which turn out to need copy relocs or are not
10429 if (!h
->non_got_ref
10430 && ((h
->def_dynamic
10431 && !h
->def_regular
)
10432 || (htab
->root
.dynamic_sections_created
10433 && (h
->root
.type
== bfd_link_hash_undefweak
10434 || h
->root
.type
== bfd_link_hash_undefined
))))
10436 /* Make sure this symbol is output as a dynamic symbol.
10437 Undefined weak syms won't yet be marked as dynamic. */
10438 if (h
->dynindx
== -1
10439 && !h
->forced_local
)
10441 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
10445 /* If that succeeded, we know we'll be keeping all the
10447 if (h
->dynindx
!= -1)
10451 eh
->relocs_copied
= NULL
;
10456 /* Finally, allocate space. */
10457 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
10459 asection
*sreloc
= elf_section_data (p
->section
)->sreloc
;
10460 sreloc
->size
+= p
->count
* RELOC_SIZE (htab
);
10466 /* Find any dynamic relocs that apply to read-only sections. */
10469 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry
* h
, void * inf
)
10471 struct elf32_arm_link_hash_entry
* eh
;
10472 struct elf32_arm_relocs_copied
* p
;
10474 if (h
->root
.type
== bfd_link_hash_warning
)
10475 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10477 eh
= (struct elf32_arm_link_hash_entry
*) h
;
10478 for (p
= eh
->relocs_copied
; p
!= NULL
; p
= p
->next
)
10480 asection
*s
= p
->section
;
10482 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
10484 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
10486 info
->flags
|= DF_TEXTREL
;
10488 /* Not an error, just cut short the traversal. */
10496 bfd_elf32_arm_set_byteswap_code (struct bfd_link_info
*info
,
10499 struct elf32_arm_link_hash_table
*globals
;
10501 globals
= elf32_arm_hash_table (info
);
10502 globals
->byteswap_code
= byteswap_code
;
10505 /* Set the sizes of the dynamic sections. */
10508 elf32_arm_size_dynamic_sections (bfd
* output_bfd ATTRIBUTE_UNUSED
,
10509 struct bfd_link_info
* info
)
10514 bfd_boolean relocs
;
10516 struct elf32_arm_link_hash_table
*htab
;
10518 htab
= elf32_arm_hash_table (info
);
10519 dynobj
= elf_hash_table (info
)->dynobj
;
10520 BFD_ASSERT (dynobj
!= NULL
);
10521 check_use_blx (htab
);
10523 if (elf_hash_table (info
)->dynamic_sections_created
)
10525 /* Set the contents of the .interp section to the interpreter. */
10526 if (info
->executable
)
10528 s
= bfd_get_section_by_name (dynobj
, ".interp");
10529 BFD_ASSERT (s
!= NULL
);
10530 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
10531 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
10535 /* Set up .got offsets for local syms, and space for local dynamic
10537 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10539 bfd_signed_vma
*local_got
;
10540 bfd_signed_vma
*end_local_got
;
10541 char *local_tls_type
;
10542 bfd_size_type locsymcount
;
10543 Elf_Internal_Shdr
*symtab_hdr
;
10545 bfd_boolean is_vxworks
= elf32_arm_hash_table (info
)->vxworks_p
;
10547 if (! is_arm_elf (ibfd
))
10550 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
10552 struct elf32_arm_relocs_copied
*p
;
10554 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
10556 if (!bfd_is_abs_section (p
->section
)
10557 && bfd_is_abs_section (p
->section
->output_section
))
10559 /* Input section has been discarded, either because
10560 it is a copy of a linkonce section or due to
10561 linker script /DISCARD/, so we'll be discarding
10564 else if (is_vxworks
10565 && strcmp (p
->section
->output_section
->name
,
10568 /* Relocations in vxworks .tls_vars sections are
10569 handled specially by the loader. */
10571 else if (p
->count
!= 0)
10573 srel
= elf_section_data (p
->section
)->sreloc
;
10574 srel
->size
+= p
->count
* RELOC_SIZE (htab
);
10575 if ((p
->section
->output_section
->flags
& SEC_READONLY
) != 0)
10576 info
->flags
|= DF_TEXTREL
;
10581 local_got
= elf_local_got_refcounts (ibfd
);
10585 symtab_hdr
= & elf_symtab_hdr (ibfd
);
10586 locsymcount
= symtab_hdr
->sh_info
;
10587 end_local_got
= local_got
+ locsymcount
;
10588 local_tls_type
= elf32_arm_local_got_tls_type (ibfd
);
10590 srel
= htab
->srelgot
;
10591 for (; local_got
< end_local_got
; ++local_got
, ++local_tls_type
)
10593 if (*local_got
> 0)
10595 *local_got
= s
->size
;
10596 if (*local_tls_type
& GOT_TLS_GD
)
10597 /* TLS_GD relocs need an 8-byte structure in the GOT. */
10599 if (*local_tls_type
& GOT_TLS_IE
)
10601 if (*local_tls_type
== GOT_NORMAL
)
10604 if (info
->shared
|| *local_tls_type
== GOT_TLS_GD
)
10605 srel
->size
+= RELOC_SIZE (htab
);
10608 *local_got
= (bfd_vma
) -1;
10612 if (htab
->tls_ldm_got
.refcount
> 0)
10614 /* Allocate two GOT entries and one dynamic relocation (if necessary)
10615 for R_ARM_TLS_LDM32 relocations. */
10616 htab
->tls_ldm_got
.offset
= htab
->sgot
->size
;
10617 htab
->sgot
->size
+= 8;
10619 htab
->srelgot
->size
+= RELOC_SIZE (htab
);
10622 htab
->tls_ldm_got
.offset
= -1;
10624 /* Allocate global sym .plt and .got entries, and space for global
10625 sym dynamic relocs. */
10626 elf_link_hash_traverse (& htab
->root
, allocate_dynrelocs
, info
);
10628 /* Here we rummage through the found bfds to collect glue information. */
10629 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10631 if (! is_arm_elf (ibfd
))
10634 /* Initialise mapping tables for code/data. */
10635 bfd_elf32_arm_init_maps (ibfd
);
10637 if (!bfd_elf32_arm_process_before_allocation (ibfd
, info
)
10638 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd
, info
))
10639 /* xgettext:c-format */
10640 _bfd_error_handler (_("Errors encountered processing file %s"),
10644 /* The check_relocs and adjust_dynamic_symbol entry points have
10645 determined the sizes of the various dynamic sections. Allocate
10646 memory for them. */
10649 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
10653 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
10656 /* It's OK to base decisions on the section name, because none
10657 of the dynobj section names depend upon the input files. */
10658 name
= bfd_get_section_name (dynobj
, s
);
10660 if (strcmp (name
, ".plt") == 0)
10662 /* Remember whether there is a PLT. */
10663 plt
= s
->size
!= 0;
10665 else if (CONST_STRNEQ (name
, ".rel"))
10669 /* Remember whether there are any reloc sections other
10670 than .rel(a).plt and .rela.plt.unloaded. */
10671 if (s
!= htab
->srelplt
&& s
!= htab
->srelplt2
)
10674 /* We use the reloc_count field as a counter if we need
10675 to copy relocs into the output file. */
10676 s
->reloc_count
= 0;
10679 else if (! CONST_STRNEQ (name
, ".got")
10680 && strcmp (name
, ".dynbss") != 0)
10682 /* It's not one of our sections, so don't allocate space. */
10688 /* If we don't need this section, strip it from the
10689 output file. This is mostly to handle .rel(a).bss and
10690 .rel(a).plt. We must create both sections in
10691 create_dynamic_sections, because they must be created
10692 before the linker maps input sections to output
10693 sections. The linker does that before
10694 adjust_dynamic_symbol is called, and it is that
10695 function which decides whether anything needs to go
10696 into these sections. */
10697 s
->flags
|= SEC_EXCLUDE
;
10701 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
10704 /* Allocate memory for the section contents. */
10705 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
10706 if (s
->contents
== NULL
)
10710 if (elf_hash_table (info
)->dynamic_sections_created
)
10712 /* Add some entries to the .dynamic section. We fill in the
10713 values later, in elf32_arm_finish_dynamic_sections, but we
10714 must add the entries now so that we get the correct size for
10715 the .dynamic section. The DT_DEBUG entry is filled in by the
10716 dynamic linker and used by the debugger. */
10717 #define add_dynamic_entry(TAG, VAL) \
10718 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
10720 if (info
->executable
)
10722 if (!add_dynamic_entry (DT_DEBUG
, 0))
10728 if ( !add_dynamic_entry (DT_PLTGOT
, 0)
10729 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
10730 || !add_dynamic_entry (DT_PLTREL
,
10731 htab
->use_rel
? DT_REL
: DT_RELA
)
10732 || !add_dynamic_entry (DT_JMPREL
, 0))
10740 if (!add_dynamic_entry (DT_REL
, 0)
10741 || !add_dynamic_entry (DT_RELSZ
, 0)
10742 || !add_dynamic_entry (DT_RELENT
, RELOC_SIZE (htab
)))
10747 if (!add_dynamic_entry (DT_RELA
, 0)
10748 || !add_dynamic_entry (DT_RELASZ
, 0)
10749 || !add_dynamic_entry (DT_RELAENT
, RELOC_SIZE (htab
)))
10754 /* If any dynamic relocs apply to a read-only section,
10755 then we need a DT_TEXTREL entry. */
10756 if ((info
->flags
& DF_TEXTREL
) == 0)
10757 elf_link_hash_traverse (& htab
->root
, elf32_arm_readonly_dynrelocs
,
10760 if ((info
->flags
& DF_TEXTREL
) != 0)
10762 if (!add_dynamic_entry (DT_TEXTREL
, 0))
10765 if (htab
->vxworks_p
10766 && !elf_vxworks_add_dynamic_entries (output_bfd
, info
))
10769 #undef add_dynamic_entry
10774 /* Finish up dynamic symbol handling. We set the contents of various
10775 dynamic sections here. */
10778 elf32_arm_finish_dynamic_symbol (bfd
* output_bfd
,
10779 struct bfd_link_info
* info
,
10780 struct elf_link_hash_entry
* h
,
10781 Elf_Internal_Sym
* sym
)
10784 struct elf32_arm_link_hash_table
*htab
;
10785 struct elf32_arm_link_hash_entry
*eh
;
10787 dynobj
= elf_hash_table (info
)->dynobj
;
10788 htab
= elf32_arm_hash_table (info
);
10789 eh
= (struct elf32_arm_link_hash_entry
*) h
;
10791 if (h
->plt
.offset
!= (bfd_vma
) -1)
10797 Elf_Internal_Rela rel
;
10799 /* This symbol has an entry in the procedure linkage table. Set
10802 BFD_ASSERT (h
->dynindx
!= -1);
10804 splt
= bfd_get_section_by_name (dynobj
, ".plt");
10805 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".plt"));
10806 BFD_ASSERT (splt
!= NULL
&& srel
!= NULL
);
10808 /* Fill in the entry in the procedure linkage table. */
10809 if (htab
->symbian_p
)
10811 put_arm_insn (htab
, output_bfd
,
10812 elf32_arm_symbian_plt_entry
[0],
10813 splt
->contents
+ h
->plt
.offset
);
10814 bfd_put_32 (output_bfd
,
10815 elf32_arm_symbian_plt_entry
[1],
10816 splt
->contents
+ h
->plt
.offset
+ 4);
10818 /* Fill in the entry in the .rel.plt section. */
10819 rel
.r_offset
= (splt
->output_section
->vma
10820 + splt
->output_offset
10821 + h
->plt
.offset
+ 4);
10822 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
10824 /* Get the index in the procedure linkage table which
10825 corresponds to this symbol. This is the index of this symbol
10826 in all the symbols for which we are making plt entries. The
10827 first entry in the procedure linkage table is reserved. */
10828 plt_index
= ((h
->plt
.offset
- htab
->plt_header_size
)
10829 / htab
->plt_entry_size
);
10833 bfd_vma got_offset
, got_address
, plt_address
;
10834 bfd_vma got_displacement
;
10838 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
10839 BFD_ASSERT (sgot
!= NULL
);
10841 /* Get the offset into the .got.plt table of the entry that
10842 corresponds to this function. */
10843 got_offset
= eh
->plt_got_offset
;
10845 /* Get the index in the procedure linkage table which
10846 corresponds to this symbol. This is the index of this symbol
10847 in all the symbols for which we are making plt entries. The
10848 first three entries in .got.plt are reserved; after that
10849 symbols appear in the same order as in .plt. */
10850 plt_index
= (got_offset
- 12) / 4;
10852 /* Calculate the address of the GOT entry. */
10853 got_address
= (sgot
->output_section
->vma
10854 + sgot
->output_offset
10857 /* ...and the address of the PLT entry. */
10858 plt_address
= (splt
->output_section
->vma
10859 + splt
->output_offset
10862 ptr
= htab
->splt
->contents
+ h
->plt
.offset
;
10863 if (htab
->vxworks_p
&& info
->shared
)
10868 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
10870 val
= elf32_arm_vxworks_shared_plt_entry
[i
];
10872 val
|= got_address
- sgot
->output_section
->vma
;
10874 val
|= plt_index
* RELOC_SIZE (htab
);
10875 if (i
== 2 || i
== 5)
10876 bfd_put_32 (output_bfd
, val
, ptr
);
10878 put_arm_insn (htab
, output_bfd
, val
, ptr
);
10881 else if (htab
->vxworks_p
)
10886 for (i
= 0; i
!= htab
->plt_entry_size
/ 4; i
++, ptr
+= 4)
10888 val
= elf32_arm_vxworks_exec_plt_entry
[i
];
10890 val
|= got_address
;
10892 val
|= 0xffffff & -((h
->plt
.offset
+ i
* 4 + 8) >> 2);
10894 val
|= plt_index
* RELOC_SIZE (htab
);
10895 if (i
== 2 || i
== 5)
10896 bfd_put_32 (output_bfd
, val
, ptr
);
10898 put_arm_insn (htab
, output_bfd
, val
, ptr
);
10901 loc
= (htab
->srelplt2
->contents
10902 + (plt_index
* 2 + 1) * RELOC_SIZE (htab
));
10904 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
10905 referencing the GOT for this PLT entry. */
10906 rel
.r_offset
= plt_address
+ 8;
10907 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
10908 rel
.r_addend
= got_offset
;
10909 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
10910 loc
+= RELOC_SIZE (htab
);
10912 /* Create the R_ARM_ABS32 relocation referencing the
10913 beginning of the PLT for this GOT entry. */
10914 rel
.r_offset
= got_address
;
10915 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
10917 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
10921 bfd_signed_vma thumb_refs
;
10922 /* Calculate the displacement between the PLT slot and the
10923 entry in the GOT. The eight-byte offset accounts for the
10924 value produced by adding to pc in the first instruction
10925 of the PLT stub. */
10926 got_displacement
= got_address
- (plt_address
+ 8);
10928 BFD_ASSERT ((got_displacement
& 0xf0000000) == 0);
10930 thumb_refs
= eh
->plt_thumb_refcount
;
10931 if (!htab
->use_blx
)
10932 thumb_refs
+= eh
->plt_maybe_thumb_refcount
;
10934 if (thumb_refs
> 0)
10936 put_thumb_insn (htab
, output_bfd
,
10937 elf32_arm_plt_thumb_stub
[0], ptr
- 4);
10938 put_thumb_insn (htab
, output_bfd
,
10939 elf32_arm_plt_thumb_stub
[1], ptr
- 2);
10942 put_arm_insn (htab
, output_bfd
,
10943 elf32_arm_plt_entry
[0]
10944 | ((got_displacement
& 0x0ff00000) >> 20),
10946 put_arm_insn (htab
, output_bfd
,
10947 elf32_arm_plt_entry
[1]
10948 | ((got_displacement
& 0x000ff000) >> 12),
10950 put_arm_insn (htab
, output_bfd
,
10951 elf32_arm_plt_entry
[2]
10952 | (got_displacement
& 0x00000fff),
10954 #ifdef FOUR_WORD_PLT
10955 bfd_put_32 (output_bfd
, elf32_arm_plt_entry
[3], ptr
+ 12);
10959 /* Fill in the entry in the global offset table. */
10960 bfd_put_32 (output_bfd
,
10961 (splt
->output_section
->vma
10962 + splt
->output_offset
),
10963 sgot
->contents
+ got_offset
);
10965 /* Fill in the entry in the .rel(a).plt section. */
10967 rel
.r_offset
= got_address
;
10968 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_JUMP_SLOT
);
10971 loc
= srel
->contents
+ plt_index
* RELOC_SIZE (htab
);
10972 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
10974 if (!h
->def_regular
)
10976 /* Mark the symbol as undefined, rather than as defined in
10977 the .plt section. Leave the value alone. */
10978 sym
->st_shndx
= SHN_UNDEF
;
10979 /* If the symbol is weak, we do need to clear the value.
10980 Otherwise, the PLT entry would provide a definition for
10981 the symbol even if the symbol wasn't defined anywhere,
10982 and so the symbol would never be NULL. */
10983 if (!h
->ref_regular_nonweak
)
10988 if (h
->got
.offset
!= (bfd_vma
) -1
10989 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_GD
) == 0
10990 && (elf32_arm_hash_entry (h
)->tls_type
& GOT_TLS_IE
) == 0)
10994 Elf_Internal_Rela rel
;
10998 /* This symbol has an entry in the global offset table. Set it
11000 sgot
= bfd_get_section_by_name (dynobj
, ".got");
11001 srel
= bfd_get_section_by_name (dynobj
, RELOC_SECTION (htab
, ".got"));
11002 BFD_ASSERT (sgot
!= NULL
&& srel
!= NULL
);
11004 offset
= (h
->got
.offset
& ~(bfd_vma
) 1);
11006 rel
.r_offset
= (sgot
->output_section
->vma
11007 + sgot
->output_offset
11010 /* If this is a static link, or it is a -Bsymbolic link and the
11011 symbol is defined locally or was forced to be local because
11012 of a version file, we just want to emit a RELATIVE reloc.
11013 The entry in the global offset table will already have been
11014 initialized in the relocate_section function. */
11016 && SYMBOL_REFERENCES_LOCAL (info
, h
))
11018 BFD_ASSERT ((h
->got
.offset
& 1) != 0);
11019 rel
.r_info
= ELF32_R_INFO (0, R_ARM_RELATIVE
);
11020 if (!htab
->use_rel
)
11022 rel
.r_addend
= bfd_get_32 (output_bfd
, sgot
->contents
+ offset
);
11023 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
11028 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
11029 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ offset
);
11030 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_GLOB_DAT
);
11033 loc
= srel
->contents
+ srel
->reloc_count
++ * RELOC_SIZE (htab
);
11034 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
11040 Elf_Internal_Rela rel
;
11043 /* This symbol needs a copy reloc. Set it up. */
11044 BFD_ASSERT (h
->dynindx
!= -1
11045 && (h
->root
.type
== bfd_link_hash_defined
11046 || h
->root
.type
== bfd_link_hash_defweak
));
11048 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
11049 RELOC_SECTION (htab
, ".bss"));
11050 BFD_ASSERT (s
!= NULL
);
11053 rel
.r_offset
= (h
->root
.u
.def
.value
11054 + h
->root
.u
.def
.section
->output_section
->vma
11055 + h
->root
.u
.def
.section
->output_offset
);
11056 rel
.r_info
= ELF32_R_INFO (h
->dynindx
, R_ARM_COPY
);
11057 loc
= s
->contents
+ s
->reloc_count
++ * RELOC_SIZE (htab
);
11058 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, loc
);
11061 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
11062 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
11063 to the ".got" section. */
11064 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
11065 || (!htab
->vxworks_p
&& h
== htab
->root
.hgot
))
11066 sym
->st_shndx
= SHN_ABS
;
11071 /* Finish up the dynamic sections. */
11074 elf32_arm_finish_dynamic_sections (bfd
* output_bfd
, struct bfd_link_info
* info
)
11080 dynobj
= elf_hash_table (info
)->dynobj
;
11082 sgot
= bfd_get_section_by_name (dynobj
, ".got.plt");
11083 BFD_ASSERT (elf32_arm_hash_table (info
)->symbian_p
|| sgot
!= NULL
);
11084 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
11086 if (elf_hash_table (info
)->dynamic_sections_created
)
11089 Elf32_External_Dyn
*dyncon
, *dynconend
;
11090 struct elf32_arm_link_hash_table
*htab
;
11092 htab
= elf32_arm_hash_table (info
);
11093 splt
= bfd_get_section_by_name (dynobj
, ".plt");
11094 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
11096 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
11097 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
11099 for (; dyncon
< dynconend
; dyncon
++)
11101 Elf_Internal_Dyn dyn
;
11105 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
11112 if (htab
->vxworks_p
11113 && elf_vxworks_finish_dynamic_entry (output_bfd
, &dyn
))
11114 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11119 goto get_vma_if_bpabi
;
11122 goto get_vma_if_bpabi
;
11125 goto get_vma_if_bpabi
;
11127 name
= ".gnu.version";
11128 goto get_vma_if_bpabi
;
11130 name
= ".gnu.version_d";
11131 goto get_vma_if_bpabi
;
11133 name
= ".gnu.version_r";
11134 goto get_vma_if_bpabi
;
11140 name
= RELOC_SECTION (htab
, ".plt");
11142 s
= bfd_get_section_by_name (output_bfd
, name
);
11143 BFD_ASSERT (s
!= NULL
);
11144 if (!htab
->symbian_p
)
11145 dyn
.d_un
.d_ptr
= s
->vma
;
11147 /* In the BPABI, tags in the PT_DYNAMIC section point
11148 at the file offset, not the memory address, for the
11149 convenience of the post linker. */
11150 dyn
.d_un
.d_ptr
= s
->filepos
;
11151 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11155 if (htab
->symbian_p
)
11160 s
= bfd_get_section_by_name (output_bfd
,
11161 RELOC_SECTION (htab
, ".plt"));
11162 BFD_ASSERT (s
!= NULL
);
11163 dyn
.d_un
.d_val
= s
->size
;
11164 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11169 if (!htab
->symbian_p
)
11171 /* My reading of the SVR4 ABI indicates that the
11172 procedure linkage table relocs (DT_JMPREL) should be
11173 included in the overall relocs (DT_REL). This is
11174 what Solaris does. However, UnixWare can not handle
11175 that case. Therefore, we override the DT_RELSZ entry
11176 here to make it not include the JMPREL relocs. Since
11177 the linker script arranges for .rel(a).plt to follow all
11178 other relocation sections, we don't have to worry
11179 about changing the DT_REL entry. */
11180 s
= bfd_get_section_by_name (output_bfd
,
11181 RELOC_SECTION (htab
, ".plt"));
11183 dyn
.d_un
.d_val
-= s
->size
;
11184 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11187 /* Fall through. */
11191 /* In the BPABI, the DT_REL tag must point at the file
11192 offset, not the VMA, of the first relocation
11193 section. So, we use code similar to that in
11194 elflink.c, but do not check for SHF_ALLOC on the
11195 relcoation section, since relocations sections are
11196 never allocated under the BPABI. The comments above
11197 about Unixware notwithstanding, we include all of the
11198 relocations here. */
11199 if (htab
->symbian_p
)
11202 type
= ((dyn
.d_tag
== DT_REL
|| dyn
.d_tag
== DT_RELSZ
)
11203 ? SHT_REL
: SHT_RELA
);
11204 dyn
.d_un
.d_val
= 0;
11205 for (i
= 1; i
< elf_numsections (output_bfd
); i
++)
11207 Elf_Internal_Shdr
*hdr
11208 = elf_elfsections (output_bfd
)[i
];
11209 if (hdr
->sh_type
== type
)
11211 if (dyn
.d_tag
== DT_RELSZ
11212 || dyn
.d_tag
== DT_RELASZ
)
11213 dyn
.d_un
.d_val
+= hdr
->sh_size
;
11214 else if ((ufile_ptr
) hdr
->sh_offset
11215 <= dyn
.d_un
.d_val
- 1)
11216 dyn
.d_un
.d_val
= hdr
->sh_offset
;
11219 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11223 /* Set the bottom bit of DT_INIT/FINI if the
11224 corresponding function is Thumb. */
11226 name
= info
->init_function
;
11229 name
= info
->fini_function
;
11231 /* If it wasn't set by elf_bfd_final_link
11232 then there is nothing to adjust. */
11233 if (dyn
.d_un
.d_val
!= 0)
11235 struct elf_link_hash_entry
* eh
;
11237 eh
= elf_link_hash_lookup (elf_hash_table (info
), name
,
11238 FALSE
, FALSE
, TRUE
);
11240 && ELF_ST_TYPE (eh
->type
) == STT_ARM_TFUNC
)
11242 dyn
.d_un
.d_val
|= 1;
11243 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11250 /* Fill in the first entry in the procedure linkage table. */
11251 if (splt
->size
> 0 && elf32_arm_hash_table (info
)->plt_header_size
)
11253 const bfd_vma
*plt0_entry
;
11254 bfd_vma got_address
, plt_address
, got_displacement
;
11256 /* Calculate the addresses of the GOT and PLT. */
11257 got_address
= sgot
->output_section
->vma
+ sgot
->output_offset
;
11258 plt_address
= splt
->output_section
->vma
+ splt
->output_offset
;
11260 if (htab
->vxworks_p
)
11262 /* The VxWorks GOT is relocated by the dynamic linker.
11263 Therefore, we must emit relocations rather than simply
11264 computing the values now. */
11265 Elf_Internal_Rela rel
;
11267 plt0_entry
= elf32_arm_vxworks_exec_plt0_entry
;
11268 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
11269 splt
->contents
+ 0);
11270 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
11271 splt
->contents
+ 4);
11272 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
11273 splt
->contents
+ 8);
11274 bfd_put_32 (output_bfd
, got_address
, splt
->contents
+ 12);
11276 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
11277 rel
.r_offset
= plt_address
+ 12;
11278 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
11280 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
,
11281 htab
->srelplt2
->contents
);
11285 got_displacement
= got_address
- (plt_address
+ 16);
11287 plt0_entry
= elf32_arm_plt0_entry
;
11288 put_arm_insn (htab
, output_bfd
, plt0_entry
[0],
11289 splt
->contents
+ 0);
11290 put_arm_insn (htab
, output_bfd
, plt0_entry
[1],
11291 splt
->contents
+ 4);
11292 put_arm_insn (htab
, output_bfd
, plt0_entry
[2],
11293 splt
->contents
+ 8);
11294 put_arm_insn (htab
, output_bfd
, plt0_entry
[3],
11295 splt
->contents
+ 12);
11297 #ifdef FOUR_WORD_PLT
11298 /* The displacement value goes in the otherwise-unused
11299 last word of the second entry. */
11300 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 28);
11302 bfd_put_32 (output_bfd
, got_displacement
, splt
->contents
+ 16);
11307 /* UnixWare sets the entsize of .plt to 4, although that doesn't
11308 really seem like the right value. */
11309 if (splt
->output_section
->owner
== output_bfd
)
11310 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
= 4;
11312 if (htab
->vxworks_p
&& !info
->shared
&& htab
->splt
->size
> 0)
11314 /* Correct the .rel(a).plt.unloaded relocations. They will have
11315 incorrect symbol indexes. */
11319 num_plts
= ((htab
->splt
->size
- htab
->plt_header_size
)
11320 / htab
->plt_entry_size
);
11321 p
= htab
->srelplt2
->contents
+ RELOC_SIZE (htab
);
11323 for (; num_plts
; num_plts
--)
11325 Elf_Internal_Rela rel
;
11327 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
11328 rel
.r_info
= ELF32_R_INFO (htab
->root
.hgot
->indx
, R_ARM_ABS32
);
11329 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
11330 p
+= RELOC_SIZE (htab
);
11332 SWAP_RELOC_IN (htab
) (output_bfd
, p
, &rel
);
11333 rel
.r_info
= ELF32_R_INFO (htab
->root
.hplt
->indx
, R_ARM_ABS32
);
11334 SWAP_RELOC_OUT (htab
) (output_bfd
, &rel
, p
);
11335 p
+= RELOC_SIZE (htab
);
11340 /* Fill in the first three entries in the global offset table. */
11343 if (sgot
->size
> 0)
11346 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
11348 bfd_put_32 (output_bfd
,
11349 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
11351 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
11352 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
11355 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
11362 elf32_arm_post_process_headers (bfd
* abfd
, struct bfd_link_info
* link_info ATTRIBUTE_UNUSED
)
11364 Elf_Internal_Ehdr
* i_ehdrp
; /* ELF file header, internal form. */
11365 struct elf32_arm_link_hash_table
*globals
;
11367 i_ehdrp
= elf_elfheader (abfd
);
11369 if (EF_ARM_EABI_VERSION (i_ehdrp
->e_flags
) == EF_ARM_EABI_UNKNOWN
)
11370 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_ARM
;
11372 i_ehdrp
->e_ident
[EI_OSABI
] = 0;
11373 i_ehdrp
->e_ident
[EI_ABIVERSION
] = ARM_ELF_ABI_VERSION
;
11377 globals
= elf32_arm_hash_table (link_info
);
11378 if (globals
->byteswap_code
)
11379 i_ehdrp
->e_flags
|= EF_ARM_BE8
;
11383 static enum elf_reloc_type_class
11384 elf32_arm_reloc_type_class (const Elf_Internal_Rela
*rela
)
11386 switch ((int) ELF32_R_TYPE (rela
->r_info
))
11388 case R_ARM_RELATIVE
:
11389 return reloc_class_relative
;
11390 case R_ARM_JUMP_SLOT
:
11391 return reloc_class_plt
;
11393 return reloc_class_copy
;
11395 return reloc_class_normal
;
11399 /* Set the right machine number for an Arm ELF file. */
11402 elf32_arm_section_flags (flagword
*flags
, const Elf_Internal_Shdr
*hdr
)
11404 if (hdr
->sh_type
== SHT_NOTE
)
11405 *flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_SAME_CONTENTS
;
11411 elf32_arm_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
11413 bfd_arm_update_notes (abfd
, ARM_NOTE_SECTION
);
11416 /* Return TRUE if this is an unwinding table entry. */
11419 is_arm_elf_unwind_section_name (bfd
* abfd ATTRIBUTE_UNUSED
, const char * name
)
11421 return (CONST_STRNEQ (name
, ELF_STRING_ARM_unwind
)
11422 || CONST_STRNEQ (name
, ELF_STRING_ARM_unwind_once
));
11426 /* Set the type and flags for an ARM section. We do this by
11427 the section name, which is a hack, but ought to work. */
11430 elf32_arm_fake_sections (bfd
* abfd
, Elf_Internal_Shdr
* hdr
, asection
* sec
)
11434 name
= bfd_get_section_name (abfd
, sec
);
11436 if (is_arm_elf_unwind_section_name (abfd
, name
))
11438 hdr
->sh_type
= SHT_ARM_EXIDX
;
11439 hdr
->sh_flags
|= SHF_LINK_ORDER
;
11444 /* Handle an ARM specific section when reading an object file. This is
11445 called when bfd_section_from_shdr finds a section with an unknown
11449 elf32_arm_section_from_shdr (bfd
*abfd
,
11450 Elf_Internal_Shdr
* hdr
,
11454 /* There ought to be a place to keep ELF backend specific flags, but
11455 at the moment there isn't one. We just keep track of the
11456 sections by their name, instead. Fortunately, the ABI gives
11457 names for all the ARM specific sections, so we will probably get
11459 switch (hdr
->sh_type
)
11461 case SHT_ARM_EXIDX
:
11462 case SHT_ARM_PREEMPTMAP
:
11463 case SHT_ARM_ATTRIBUTES
:
11470 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
, shindex
))
11476 /* A structure used to record a list of sections, independently
11477 of the next and prev fields in the asection structure. */
11478 typedef struct section_list
11481 struct section_list
* next
;
11482 struct section_list
* prev
;
11486 /* Unfortunately we need to keep a list of sections for which
11487 an _arm_elf_section_data structure has been allocated. This
11488 is because it is possible for functions like elf32_arm_write_section
11489 to be called on a section which has had an elf_data_structure
11490 allocated for it (and so the used_by_bfd field is valid) but
11491 for which the ARM extended version of this structure - the
11492 _arm_elf_section_data structure - has not been allocated. */
11493 static section_list
* sections_with_arm_elf_section_data
= NULL
;
11496 record_section_with_arm_elf_section_data (asection
* sec
)
11498 struct section_list
* entry
;
11500 entry
= bfd_malloc (sizeof (* entry
));
11504 entry
->next
= sections_with_arm_elf_section_data
;
11505 entry
->prev
= NULL
;
11506 if (entry
->next
!= NULL
)
11507 entry
->next
->prev
= entry
;
11508 sections_with_arm_elf_section_data
= entry
;
11511 static struct section_list
*
11512 find_arm_elf_section_entry (asection
* sec
)
11514 struct section_list
* entry
;
11515 static struct section_list
* last_entry
= NULL
;
11517 /* This is a short cut for the typical case where the sections are added
11518 to the sections_with_arm_elf_section_data list in forward order and
11519 then looked up here in backwards order. This makes a real difference
11520 to the ld-srec/sec64k.exp linker test. */
11521 entry
= sections_with_arm_elf_section_data
;
11522 if (last_entry
!= NULL
)
11524 if (last_entry
->sec
== sec
)
11525 entry
= last_entry
;
11526 else if (last_entry
->next
!= NULL
11527 && last_entry
->next
->sec
== sec
)
11528 entry
= last_entry
->next
;
11531 for (; entry
; entry
= entry
->next
)
11532 if (entry
->sec
== sec
)
11536 /* Record the entry prior to this one - it is the entry we are most
11537 likely to want to locate next time. Also this way if we have been
11538 called from unrecord_section_with_arm_elf_section_data() we will not
11539 be caching a pointer that is about to be freed. */
11540 last_entry
= entry
->prev
;
11545 static _arm_elf_section_data
*
11546 get_arm_elf_section_data (asection
* sec
)
11548 struct section_list
* entry
;
11550 entry
= find_arm_elf_section_entry (sec
);
11553 return elf32_arm_section_data (entry
->sec
);
11559 unrecord_section_with_arm_elf_section_data (asection
* sec
)
11561 struct section_list
* entry
;
11563 entry
= find_arm_elf_section_entry (sec
);
11567 if (entry
->prev
!= NULL
)
11568 entry
->prev
->next
= entry
->next
;
11569 if (entry
->next
!= NULL
)
11570 entry
->next
->prev
= entry
->prev
;
11571 if (entry
== sections_with_arm_elf_section_data
)
11572 sections_with_arm_elf_section_data
= entry
->next
;
11581 struct bfd_link_info
*info
;
11584 bfd_boolean (*func
) (void *, const char *, Elf_Internal_Sym
*,
11585 asection
*, struct elf_link_hash_entry
*);
11586 } output_arch_syminfo
;
11588 enum map_symbol_type
11596 /* Output a single mapping symbol. */
11599 elf32_arm_output_map_sym (output_arch_syminfo
*osi
,
11600 enum map_symbol_type type
,
11603 static const char *names
[3] = {"$a", "$t", "$d"};
11604 struct elf32_arm_link_hash_table
*htab
;
11605 Elf_Internal_Sym sym
;
11607 htab
= elf32_arm_hash_table (osi
->info
);
11608 sym
.st_value
= osi
->sec
->output_section
->vma
11609 + osi
->sec
->output_offset
11613 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_NOTYPE
);
11614 sym
.st_shndx
= osi
->sec_shndx
;
11615 if (!osi
->func (osi
->finfo
, names
[type
], &sym
, osi
->sec
, NULL
))
11621 /* Output mapping symbols for PLT entries associated with H. */
11624 elf32_arm_output_plt_map (struct elf_link_hash_entry
*h
, void *inf
)
11626 output_arch_syminfo
*osi
= (output_arch_syminfo
*) inf
;
11627 struct elf32_arm_link_hash_table
*htab
;
11628 struct elf32_arm_link_hash_entry
*eh
;
11631 htab
= elf32_arm_hash_table (osi
->info
);
11633 if (h
->root
.type
== bfd_link_hash_indirect
)
11636 if (h
->root
.type
== bfd_link_hash_warning
)
11637 /* When warning symbols are created, they **replace** the "real"
11638 entry in the hash table, thus we never get to see the real
11639 symbol in a hash traversal. So look at it now. */
11640 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
11642 if (h
->plt
.offset
== (bfd_vma
) -1)
11645 eh
= (struct elf32_arm_link_hash_entry
*) h
;
11646 addr
= h
->plt
.offset
;
11647 if (htab
->symbian_p
)
11649 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_ARM
, addr
))
11651 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_DATA
, addr
+ 4))
11654 else if (htab
->vxworks_p
)
11656 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_ARM
, addr
))
11658 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_DATA
, addr
+ 8))
11660 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_ARM
, addr
+ 12))
11662 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_DATA
, addr
+ 20))
11667 bfd_signed_vma thumb_refs
;
11669 thumb_refs
= eh
->plt_thumb_refcount
;
11670 if (!htab
->use_blx
)
11671 thumb_refs
+= eh
->plt_maybe_thumb_refcount
;
11673 if (thumb_refs
> 0)
11675 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_THUMB
, addr
- 4))
11678 #ifdef FOUR_WORD_PLT
11679 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_ARM
, addr
))
11681 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_DATA
, addr
+ 12))
11684 /* A three-word PLT with no Thumb thunk contains only Arm code,
11685 so only need to output a mapping symbol for the first PLT entry and
11686 entries with thumb thunks. */
11687 if (thumb_refs
> 0 || addr
== 20)
11689 if (!elf32_arm_output_map_sym (osi
, ARM_MAP_ARM
, addr
))
11698 /* Output a single local symbol for a generated stub. */
11701 elf32_arm_output_stub_sym (output_arch_syminfo
*osi
, const char *name
,
11702 bfd_vma offset
, bfd_vma size
)
11704 struct elf32_arm_link_hash_table
*htab
;
11705 Elf_Internal_Sym sym
;
11707 htab
= elf32_arm_hash_table (osi
->info
);
11708 sym
.st_value
= osi
->sec
->output_section
->vma
11709 + osi
->sec
->output_offset
11711 sym
.st_size
= size
;
11713 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FUNC
);
11714 sym
.st_shndx
= osi
->sec_shndx
;
11715 if (!osi
->func (osi
->finfo
, name
, &sym
, osi
->sec
, NULL
))
11721 arm_map_one_stub (struct bfd_hash_entry
* gen_entry
,
11724 struct elf32_arm_stub_hash_entry
*stub_entry
;
11725 struct bfd_link_info
*info
;
11726 struct elf32_arm_link_hash_table
*htab
;
11727 asection
*stub_sec
;
11730 output_arch_syminfo
*osi
;
11731 const insn_sequence
*template;
11732 enum stub_insn_type prev_type
;
11735 enum map_symbol_type sym_type
;
11737 /* Massage our args to the form they really have. */
11738 stub_entry
= (struct elf32_arm_stub_hash_entry
*) gen_entry
;
11739 osi
= (output_arch_syminfo
*) in_arg
;
11743 htab
= elf32_arm_hash_table (info
);
11744 stub_sec
= stub_entry
->stub_sec
;
11746 /* Ensure this stub is attached to the current section being
11748 if (stub_sec
!= osi
->sec
)
11751 addr
= (bfd_vma
) stub_entry
->stub_offset
;
11752 stub_name
= stub_entry
->output_name
;
11754 template = stub_entry
->stub_template
;
11755 switch (template[0].type
)
11758 if (!elf32_arm_output_stub_sym (osi
, stub_name
, addr
, stub_entry
->stub_size
))
11762 if (!elf32_arm_output_stub_sym (osi
, stub_name
, addr
| 1,
11763 stub_entry
->stub_size
))
11771 prev_type
= DATA_TYPE
;
11773 for (i
= 0; i
< stub_entry
->stub_template_size
; i
++)
11775 switch (template[i
].type
)
11778 sym_type
= ARM_MAP_ARM
;
11782 sym_type
= ARM_MAP_THUMB
;
11786 sym_type
= ARM_MAP_DATA
;
11794 if (template[i
].type
!= prev_type
)
11796 prev_type
= template[i
].type
;
11797 if (!elf32_arm_output_map_sym (osi
, sym_type
, addr
+ size
))
11801 switch (template[i
].type
)
11824 /* Output mapping symbols for linker generated sections. */
11827 elf32_arm_output_arch_local_syms (bfd
*output_bfd
,
11828 struct bfd_link_info
*info
,
11830 bfd_boolean (*func
) (void *, const char *,
11831 Elf_Internal_Sym
*,
11833 struct elf_link_hash_entry
*))
11835 output_arch_syminfo osi
;
11836 struct elf32_arm_link_hash_table
*htab
;
11838 bfd_size_type size
;
11840 htab
= elf32_arm_hash_table (info
);
11841 check_use_blx (htab
);
11847 /* ARM->Thumb glue. */
11848 if (htab
->arm_glue_size
> 0)
11850 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
11851 ARM2THUMB_GLUE_SECTION_NAME
);
11853 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
11854 (output_bfd
, osi
.sec
->output_section
);
11855 if (info
->shared
|| htab
->root
.is_relocatable_executable
11856 || htab
->pic_veneer
)
11857 size
= ARM2THUMB_PIC_GLUE_SIZE
;
11858 else if (htab
->use_blx
)
11859 size
= ARM2THUMB_V5_STATIC_GLUE_SIZE
;
11861 size
= ARM2THUMB_STATIC_GLUE_SIZE
;
11863 for (offset
= 0; offset
< htab
->arm_glue_size
; offset
+= size
)
11865 elf32_arm_output_map_sym (&osi
, ARM_MAP_ARM
, offset
);
11866 elf32_arm_output_map_sym (&osi
, ARM_MAP_DATA
, offset
+ size
- 4);
11870 /* Thumb->ARM glue. */
11871 if (htab
->thumb_glue_size
> 0)
11873 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
11874 THUMB2ARM_GLUE_SECTION_NAME
);
11876 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
11877 (output_bfd
, osi
.sec
->output_section
);
11878 size
= THUMB2ARM_GLUE_SIZE
;
11880 for (offset
= 0; offset
< htab
->thumb_glue_size
; offset
+= size
)
11882 elf32_arm_output_map_sym (&osi
, ARM_MAP_THUMB
, offset
);
11883 elf32_arm_output_map_sym (&osi
, ARM_MAP_ARM
, offset
+ 4);
11887 /* ARMv4 BX veneers. */
11888 if (htab
->bx_glue_size
> 0)
11890 osi
.sec
= bfd_get_section_by_name (htab
->bfd_of_glue_owner
,
11891 ARM_BX_GLUE_SECTION_NAME
);
11893 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
11894 (output_bfd
, osi
.sec
->output_section
);
11896 elf32_arm_output_map_sym (&osi
, ARM_MAP_ARM
, 0);
11899 /* Long calls stubs. */
11900 if (htab
->stub_bfd
&& htab
->stub_bfd
->sections
)
11902 asection
* stub_sec
;
11904 for (stub_sec
= htab
->stub_bfd
->sections
;
11906 stub_sec
= stub_sec
->next
)
11908 /* Ignore non-stub sections. */
11909 if (!strstr (stub_sec
->name
, STUB_SUFFIX
))
11912 osi
.sec
= stub_sec
;
11914 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section
11915 (output_bfd
, osi
.sec
->output_section
);
11917 bfd_hash_traverse (&htab
->stub_hash_table
, arm_map_one_stub
, &osi
);
11921 /* Finally, output mapping symbols for the PLT. */
11922 if (!htab
->splt
|| htab
->splt
->size
== 0)
11925 osi
.sec_shndx
= _bfd_elf_section_from_bfd_section (output_bfd
,
11926 htab
->splt
->output_section
);
11927 osi
.sec
= htab
->splt
;
11928 /* Output mapping symbols for the plt header. SymbianOS does not have a
11930 if (htab
->vxworks_p
)
11932 /* VxWorks shared libraries have no PLT header. */
11935 if (!elf32_arm_output_map_sym (&osi
, ARM_MAP_ARM
, 0))
11937 if (!elf32_arm_output_map_sym (&osi
, ARM_MAP_DATA
, 12))
11941 else if (!htab
->symbian_p
)
11943 if (!elf32_arm_output_map_sym (&osi
, ARM_MAP_ARM
, 0))
11945 #ifndef FOUR_WORD_PLT
11946 if (!elf32_arm_output_map_sym (&osi
, ARM_MAP_DATA
, 16))
11951 elf_link_hash_traverse (&htab
->root
, elf32_arm_output_plt_map
, (void *) &osi
);
11955 /* Allocate target specific section data. */
11958 elf32_arm_new_section_hook (bfd
*abfd
, asection
*sec
)
11960 if (!sec
->used_by_bfd
)
11962 _arm_elf_section_data
*sdata
;
11963 bfd_size_type amt
= sizeof (*sdata
);
11965 sdata
= bfd_zalloc (abfd
, amt
);
11968 sec
->used_by_bfd
= sdata
;
11971 record_section_with_arm_elf_section_data (sec
);
11973 return _bfd_elf_new_section_hook (abfd
, sec
);
11977 /* Used to order a list of mapping symbols by address. */
11980 elf32_arm_compare_mapping (const void * a
, const void * b
)
11982 const elf32_arm_section_map
*amap
= (const elf32_arm_section_map
*) a
;
11983 const elf32_arm_section_map
*bmap
= (const elf32_arm_section_map
*) b
;
11985 if (amap
->vma
> bmap
->vma
)
11987 else if (amap
->vma
< bmap
->vma
)
11989 else if (amap
->type
> bmap
->type
)
11990 /* Ensure results do not depend on the host qsort for objects with
11991 multiple mapping symbols at the same address by sorting on type
11994 else if (amap
->type
< bmap
->type
)
12001 /* Do code byteswapping. Return FALSE afterwards so that the section is
12002 written out as normal. */
12005 elf32_arm_write_section (bfd
*output_bfd
,
12006 struct bfd_link_info
*link_info
,
12008 bfd_byte
*contents
)
12010 int mapcount
, errcount
;
12011 _arm_elf_section_data
*arm_data
;
12012 struct elf32_arm_link_hash_table
*globals
= elf32_arm_hash_table (link_info
);
12013 elf32_arm_section_map
*map
;
12014 elf32_vfp11_erratum_list
*errnode
;
12017 bfd_vma offset
= sec
->output_section
->vma
+ sec
->output_offset
;
12021 /* If this section has not been allocated an _arm_elf_section_data
12022 structure then we cannot record anything. */
12023 arm_data
= get_arm_elf_section_data (sec
);
12024 if (arm_data
== NULL
)
12027 mapcount
= arm_data
->mapcount
;
12028 map
= arm_data
->map
;
12029 errcount
= arm_data
->erratumcount
;
12033 unsigned int endianflip
= bfd_big_endian (output_bfd
) ? 3 : 0;
12035 for (errnode
= arm_data
->erratumlist
; errnode
!= 0;
12036 errnode
= errnode
->next
)
12038 bfd_vma index
= errnode
->vma
- offset
;
12040 switch (errnode
->type
)
12042 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER
:
12044 bfd_vma branch_to_veneer
;
12045 /* Original condition code of instruction, plus bit mask for
12046 ARM B instruction. */
12047 unsigned int insn
= (errnode
->u
.b
.vfp_insn
& 0xf0000000)
12050 /* The instruction is before the label. */
12053 /* Above offset included in -4 below. */
12054 branch_to_veneer
= errnode
->u
.b
.veneer
->vma
12055 - errnode
->vma
- 4;
12057 if ((signed) branch_to_veneer
< -(1 << 25)
12058 || (signed) branch_to_veneer
>= (1 << 25))
12059 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
12060 "range"), output_bfd
);
12062 insn
|= (branch_to_veneer
>> 2) & 0xffffff;
12063 contents
[endianflip
^ index
] = insn
& 0xff;
12064 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
12065 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
12066 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
12070 case VFP11_ERRATUM_ARM_VENEER
:
12072 bfd_vma branch_from_veneer
;
12075 /* Take size of veneer into account. */
12076 branch_from_veneer
= errnode
->u
.v
.branch
->vma
12077 - errnode
->vma
- 12;
12079 if ((signed) branch_from_veneer
< -(1 << 25)
12080 || (signed) branch_from_veneer
>= (1 << 25))
12081 (*_bfd_error_handler
) (_("%B: error: VFP11 veneer out of "
12082 "range"), output_bfd
);
12084 /* Original instruction. */
12085 insn
= errnode
->u
.v
.branch
->u
.b
.vfp_insn
;
12086 contents
[endianflip
^ index
] = insn
& 0xff;
12087 contents
[endianflip
^ (index
+ 1)] = (insn
>> 8) & 0xff;
12088 contents
[endianflip
^ (index
+ 2)] = (insn
>> 16) & 0xff;
12089 contents
[endianflip
^ (index
+ 3)] = (insn
>> 24) & 0xff;
12091 /* Branch back to insn after original insn. */
12092 insn
= 0xea000000 | ((branch_from_veneer
>> 2) & 0xffffff);
12093 contents
[endianflip
^ (index
+ 4)] = insn
& 0xff;
12094 contents
[endianflip
^ (index
+ 5)] = (insn
>> 8) & 0xff;
12095 contents
[endianflip
^ (index
+ 6)] = (insn
>> 16) & 0xff;
12096 contents
[endianflip
^ (index
+ 7)] = (insn
>> 24) & 0xff;
12109 if (globals
->byteswap_code
)
12111 qsort (map
, mapcount
, sizeof (* map
), elf32_arm_compare_mapping
);
12114 for (i
= 0; i
< mapcount
; i
++)
12116 if (i
== mapcount
- 1)
12119 end
= map
[i
+ 1].vma
;
12121 switch (map
[i
].type
)
12124 /* Byte swap code words. */
12125 while (ptr
+ 3 < end
)
12127 tmp
= contents
[ptr
];
12128 contents
[ptr
] = contents
[ptr
+ 3];
12129 contents
[ptr
+ 3] = tmp
;
12130 tmp
= contents
[ptr
+ 1];
12131 contents
[ptr
+ 1] = contents
[ptr
+ 2];
12132 contents
[ptr
+ 2] = tmp
;
12138 /* Byte swap code halfwords. */
12139 while (ptr
+ 1 < end
)
12141 tmp
= contents
[ptr
];
12142 contents
[ptr
] = contents
[ptr
+ 1];
12143 contents
[ptr
+ 1] = tmp
;
12149 /* Leave data alone. */
12157 arm_data
->mapcount
= 0;
12158 arm_data
->mapsize
= 0;
12159 arm_data
->map
= NULL
;
12160 unrecord_section_with_arm_elf_section_data (sec
);
12166 unrecord_section_via_map_over_sections (bfd
* abfd ATTRIBUTE_UNUSED
,
12168 void * ignore ATTRIBUTE_UNUSED
)
12170 unrecord_section_with_arm_elf_section_data (sec
);
12174 elf32_arm_close_and_cleanup (bfd
* abfd
)
12176 if (abfd
->sections
)
12177 bfd_map_over_sections (abfd
,
12178 unrecord_section_via_map_over_sections
,
12181 return _bfd_elf_close_and_cleanup (abfd
);
12185 elf32_arm_bfd_free_cached_info (bfd
* abfd
)
12187 if (abfd
->sections
)
12188 bfd_map_over_sections (abfd
,
12189 unrecord_section_via_map_over_sections
,
12192 return _bfd_free_cached_info (abfd
);
12195 /* Display STT_ARM_TFUNC symbols as functions. */
12198 elf32_arm_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
12201 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
12203 if (ELF_ST_TYPE (elfsym
->internal_elf_sym
.st_info
) == STT_ARM_TFUNC
)
12204 elfsym
->symbol
.flags
|= BSF_FUNCTION
;
12208 /* Mangle thumb function symbols as we read them in. */
12211 elf32_arm_swap_symbol_in (bfd
* abfd
,
12214 Elf_Internal_Sym
*dst
)
12216 if (!bfd_elf32_swap_symbol_in (abfd
, psrc
, pshn
, dst
))
12219 /* New EABI objects mark thumb function symbols by setting the low bit of
12220 the address. Turn these into STT_ARM_TFUNC. */
12221 if ((ELF_ST_TYPE (dst
->st_info
) == STT_FUNC
)
12222 && (dst
->st_value
& 1))
12224 dst
->st_info
= ELF_ST_INFO (ELF_ST_BIND (dst
->st_info
), STT_ARM_TFUNC
);
12225 dst
->st_value
&= ~(bfd_vma
) 1;
12231 /* Mangle thumb function symbols as we write them out. */
12234 elf32_arm_swap_symbol_out (bfd
*abfd
,
12235 const Elf_Internal_Sym
*src
,
12239 Elf_Internal_Sym newsym
;
12241 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
12242 of the address set, as per the new EABI. We do this unconditionally
12243 because objcopy does not set the elf header flags until after
12244 it writes out the symbol table. */
12245 if (ELF_ST_TYPE (src
->st_info
) == STT_ARM_TFUNC
)
12248 newsym
.st_info
= ELF_ST_INFO (ELF_ST_BIND (src
->st_info
), STT_FUNC
);
12249 if (newsym
.st_shndx
!= SHN_UNDEF
)
12251 /* Do this only for defined symbols. At link type, the static
12252 linker will simulate the work of dynamic linker of resolving
12253 symbols and will carry over the thumbness of found symbols to
12254 the output symbol table. It's not clear how it happens, but
12255 the thumbness of undefined symbols can well be different at
12256 runtime, and writing '1' for them will be confusing for users
12257 and possibly for dynamic linker itself.
12259 newsym
.st_value
|= 1;
12264 bfd_elf32_swap_symbol_out (abfd
, src
, cdst
, shndx
);
12267 /* Add the PT_ARM_EXIDX program header. */
12270 elf32_arm_modify_segment_map (bfd
*abfd
,
12271 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
12273 struct elf_segment_map
*m
;
12276 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
12277 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
12279 /* If there is already a PT_ARM_EXIDX header, then we do not
12280 want to add another one. This situation arises when running
12281 "strip"; the input binary already has the header. */
12282 m
= elf_tdata (abfd
)->segment_map
;
12283 while (m
&& m
->p_type
!= PT_ARM_EXIDX
)
12287 m
= bfd_zalloc (abfd
, sizeof (struct elf_segment_map
));
12290 m
->p_type
= PT_ARM_EXIDX
;
12292 m
->sections
[0] = sec
;
12294 m
->next
= elf_tdata (abfd
)->segment_map
;
12295 elf_tdata (abfd
)->segment_map
= m
;
12302 /* We may add a PT_ARM_EXIDX program header. */
12305 elf32_arm_additional_program_headers (bfd
*abfd
,
12306 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
12310 sec
= bfd_get_section_by_name (abfd
, ".ARM.exidx");
12311 if (sec
!= NULL
&& (sec
->flags
& SEC_LOAD
) != 0)
12317 /* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
12320 elf32_arm_is_function_type (unsigned int type
)
12322 return (type
== STT_FUNC
) || (type
== STT_ARM_TFUNC
);
12325 /* We use this to override swap_symbol_in and swap_symbol_out. */
12326 const struct elf_size_info elf32_arm_size_info
=
12328 sizeof (Elf32_External_Ehdr
),
12329 sizeof (Elf32_External_Phdr
),
12330 sizeof (Elf32_External_Shdr
),
12331 sizeof (Elf32_External_Rel
),
12332 sizeof (Elf32_External_Rela
),
12333 sizeof (Elf32_External_Sym
),
12334 sizeof (Elf32_External_Dyn
),
12335 sizeof (Elf_External_Note
),
12339 ELFCLASS32
, EV_CURRENT
,
12340 bfd_elf32_write_out_phdrs
,
12341 bfd_elf32_write_shdrs_and_ehdr
,
12342 bfd_elf32_checksum_contents
,
12343 bfd_elf32_write_relocs
,
12344 elf32_arm_swap_symbol_in
,
12345 elf32_arm_swap_symbol_out
,
12346 bfd_elf32_slurp_reloc_table
,
12347 bfd_elf32_slurp_symbol_table
,
12348 bfd_elf32_swap_dyn_in
,
12349 bfd_elf32_swap_dyn_out
,
12350 bfd_elf32_swap_reloc_in
,
12351 bfd_elf32_swap_reloc_out
,
12352 bfd_elf32_swap_reloca_in
,
12353 bfd_elf32_swap_reloca_out
12356 #define ELF_ARCH bfd_arch_arm
12357 #define ELF_MACHINE_CODE EM_ARM
12358 #ifdef __QNXTARGET__
12359 #define ELF_MAXPAGESIZE 0x1000
12361 #define ELF_MAXPAGESIZE 0x8000
12363 #define ELF_MINPAGESIZE 0x1000
12364 #define ELF_COMMONPAGESIZE 0x1000
12366 #define bfd_elf32_mkobject elf32_arm_mkobject
12368 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
12369 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
12370 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
12371 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
12372 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
12373 #define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free
12374 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
12375 #define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
12376 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
12377 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
12378 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
12379 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
12380 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
12381 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
12383 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
12384 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
12385 #define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
12386 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
12387 #define elf_backend_check_relocs elf32_arm_check_relocs
12388 #define elf_backend_relocate_section elf32_arm_relocate_section
12389 #define elf_backend_write_section elf32_arm_write_section
12390 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
12391 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
12392 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
12393 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
12394 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
12395 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
12396 #define elf_backend_post_process_headers elf32_arm_post_process_headers
12397 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
12398 #define elf_backend_object_p elf32_arm_object_p
12399 #define elf_backend_section_flags elf32_arm_section_flags
12400 #define elf_backend_fake_sections elf32_arm_fake_sections
12401 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
12402 #define elf_backend_final_write_processing elf32_arm_final_write_processing
12403 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
12404 #define elf_backend_symbol_processing elf32_arm_symbol_processing
12405 #define elf_backend_size_info elf32_arm_size_info
12406 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
12407 #define elf_backend_additional_program_headers elf32_arm_additional_program_headers
12408 #define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms
12409 #define elf_backend_begin_write_processing elf32_arm_begin_write_processing
12410 #define elf_backend_is_function_type elf32_arm_is_function_type
12412 #define elf_backend_can_refcount 1
12413 #define elf_backend_can_gc_sections 1
12414 #define elf_backend_plt_readonly 1
12415 #define elf_backend_want_got_plt 1
12416 #define elf_backend_want_plt_sym 0
12417 #define elf_backend_may_use_rel_p 1
12418 #define elf_backend_may_use_rela_p 0
12419 #define elf_backend_default_use_rela_p 0
12421 #define elf_backend_got_header_size 12
12423 #undef elf_backend_obj_attrs_vendor
12424 #define elf_backend_obj_attrs_vendor "aeabi"
12425 #undef elf_backend_obj_attrs_section
12426 #define elf_backend_obj_attrs_section ".ARM.attributes"
12427 #undef elf_backend_obj_attrs_arg_type
12428 #define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
12429 #undef elf_backend_obj_attrs_section_type
12430 #define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
12431 #define elf_backend_obj_attrs_order elf32_arm_obj_attrs_order
12433 #include "elf32-target.h"
12435 /* VxWorks Targets. */
12437 #undef TARGET_LITTLE_SYM
12438 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
12439 #undef TARGET_LITTLE_NAME
12440 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
12441 #undef TARGET_BIG_SYM
12442 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
12443 #undef TARGET_BIG_NAME
12444 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
12446 /* Like elf32_arm_link_hash_table_create -- but overrides
12447 appropriately for VxWorks. */
12449 static struct bfd_link_hash_table
*
12450 elf32_arm_vxworks_link_hash_table_create (bfd
*abfd
)
12452 struct bfd_link_hash_table
*ret
;
12454 ret
= elf32_arm_link_hash_table_create (abfd
);
12457 struct elf32_arm_link_hash_table
*htab
12458 = (struct elf32_arm_link_hash_table
*) ret
;
12460 htab
->vxworks_p
= 1;
12466 elf32_arm_vxworks_final_write_processing (bfd
*abfd
, bfd_boolean linker
)
12468 elf32_arm_final_write_processing (abfd
, linker
);
12469 elf_vxworks_final_write_processing (abfd
, linker
);
12473 #define elf32_bed elf32_arm_vxworks_bed
12475 #undef bfd_elf32_bfd_link_hash_table_create
12476 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create
12477 #undef elf_backend_add_symbol_hook
12478 #define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
12479 #undef elf_backend_final_write_processing
12480 #define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing
12481 #undef elf_backend_emit_relocs
12482 #define elf_backend_emit_relocs elf_vxworks_emit_relocs
12484 #undef elf_backend_may_use_rel_p
12485 #define elf_backend_may_use_rel_p 0
12486 #undef elf_backend_may_use_rela_p
12487 #define elf_backend_may_use_rela_p 1
12488 #undef elf_backend_default_use_rela_p
12489 #define elf_backend_default_use_rela_p 1
12490 #undef elf_backend_want_plt_sym
12491 #define elf_backend_want_plt_sym 1
12492 #undef ELF_MAXPAGESIZE
12493 #define ELF_MAXPAGESIZE 0x1000
12495 #include "elf32-target.h"
12498 /* Symbian OS Targets. */
12500 #undef TARGET_LITTLE_SYM
12501 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
12502 #undef TARGET_LITTLE_NAME
12503 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
12504 #undef TARGET_BIG_SYM
12505 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
12506 #undef TARGET_BIG_NAME
12507 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
12509 /* Like elf32_arm_link_hash_table_create -- but overrides
12510 appropriately for Symbian OS. */
12512 static struct bfd_link_hash_table
*
12513 elf32_arm_symbian_link_hash_table_create (bfd
*abfd
)
12515 struct bfd_link_hash_table
*ret
;
12517 ret
= elf32_arm_link_hash_table_create (abfd
);
12520 struct elf32_arm_link_hash_table
*htab
12521 = (struct elf32_arm_link_hash_table
*)ret
;
12522 /* There is no PLT header for Symbian OS. */
12523 htab
->plt_header_size
= 0;
12524 /* The PLT entries are each one instruction and one word. */
12525 htab
->plt_entry_size
= 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry
);
12526 htab
->symbian_p
= 1;
12527 /* Symbian uses armv5t or above, so use_blx is always true. */
12529 htab
->root
.is_relocatable_executable
= 1;
12534 static const struct bfd_elf_special_section
12535 elf32_arm_symbian_special_sections
[] =
12537 /* In a BPABI executable, the dynamic linking sections do not go in
12538 the loadable read-only segment. The post-linker may wish to
12539 refer to these sections, but they are not part of the final
12541 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC
, 0 },
12542 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB
, 0 },
12543 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM
, 0 },
12544 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS
, 0 },
12545 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH
, 0 },
12546 /* These sections do not need to be writable as the SymbianOS
12547 postlinker will arrange things so that no dynamic relocation is
12549 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY
, SHF_ALLOC
},
12550 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY
, SHF_ALLOC
},
12551 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY
, SHF_ALLOC
},
12552 { NULL
, 0, 0, 0, 0 }
12556 elf32_arm_symbian_begin_write_processing (bfd
*abfd
,
12557 struct bfd_link_info
*link_info
)
12559 /* BPABI objects are never loaded directly by an OS kernel; they are
12560 processed by a postlinker first, into an OS-specific format. If
12561 the D_PAGED bit is set on the file, BFD will align segments on
12562 page boundaries, so that an OS can directly map the file. With
12563 BPABI objects, that just results in wasted space. In addition,
12564 because we clear the D_PAGED bit, map_sections_to_segments will
12565 recognize that the program headers should not be mapped into any
12566 loadable segment. */
12567 abfd
->flags
&= ~D_PAGED
;
12568 elf32_arm_begin_write_processing (abfd
, link_info
);
12572 elf32_arm_symbian_modify_segment_map (bfd
*abfd
,
12573 struct bfd_link_info
*info
)
12575 struct elf_segment_map
*m
;
12578 /* BPABI shared libraries and executables should have a PT_DYNAMIC
12579 segment. However, because the .dynamic section is not marked
12580 with SEC_LOAD, the generic ELF code will not create such a
12582 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
12585 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
12586 if (m
->p_type
== PT_DYNAMIC
)
12591 m
= _bfd_elf_make_dynamic_segment (abfd
, dynsec
);
12592 m
->next
= elf_tdata (abfd
)->segment_map
;
12593 elf_tdata (abfd
)->segment_map
= m
;
12597 /* Also call the generic arm routine. */
12598 return elf32_arm_modify_segment_map (abfd
, info
);
12601 /* Return address for Ith PLT stub in section PLT, for relocation REL
12602 or (bfd_vma) -1 if it should not be included. */
12605 elf32_arm_symbian_plt_sym_val (bfd_vma i
, const asection
*plt
,
12606 const arelent
*rel ATTRIBUTE_UNUSED
)
12608 return plt
->vma
+ 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry
) * i
;
12613 #define elf32_bed elf32_arm_symbian_bed
12615 /* The dynamic sections are not allocated on SymbianOS; the postlinker
12616 will process them and then discard them. */
12617 #undef ELF_DYNAMIC_SEC_FLAGS
12618 #define ELF_DYNAMIC_SEC_FLAGS \
12619 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
12621 #undef elf_backend_add_symbol_hook
12622 #undef elf_backend_emit_relocs
12624 #undef bfd_elf32_bfd_link_hash_table_create
12625 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create
12626 #undef elf_backend_special_sections
12627 #define elf_backend_special_sections elf32_arm_symbian_special_sections
12628 #undef elf_backend_begin_write_processing
12629 #define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing
12630 #undef elf_backend_final_write_processing
12631 #define elf_backend_final_write_processing elf32_arm_final_write_processing
12633 #undef elf_backend_modify_segment_map
12634 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
12636 /* There is no .got section for BPABI objects, and hence no header. */
12637 #undef elf_backend_got_header_size
12638 #define elf_backend_got_header_size 0
12640 /* Similarly, there is no .got.plt section. */
12641 #undef elf_backend_want_got_plt
12642 #define elf_backend_want_got_plt 0
12644 #undef elf_backend_plt_sym_val
12645 #define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val
12647 #undef elf_backend_may_use_rel_p
12648 #define elf_backend_may_use_rel_p 1
12649 #undef elf_backend_may_use_rela_p
12650 #define elf_backend_may_use_rela_p 0
12651 #undef elf_backend_default_use_rela_p
12652 #define elf_backend_default_use_rela_p 0
12653 #undef elf_backend_want_plt_sym
12654 #define elf_backend_want_plt_sym 0
12655 #undef ELF_MAXPAGESIZE
12656 #define ELF_MAXPAGESIZE 0x8000
12658 #include "elf32-target.h"