1 /* 32-bit ELF support for ARM
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
3 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 2 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, MA 02110-1301, USA. */
23 #include "libiberty.h"
26 #include "elf-vxworks.h"
30 #define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0]))
33 /* Return the relocation section associated with NAME. HTAB is the
34 bfd's elf32_arm_link_hash_entry. */
35 #define RELOC_SECTION(HTAB, NAME) \
36 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
38 /* Return size of a relocation entry. HTAB is the bfd's
39 elf32_arm_link_hash_entry. */
40 #define RELOC_SIZE(HTAB) \
42 ? sizeof (Elf32_External_Rel) \
43 : sizeof (Elf32_External_Rela))
45 /* Return function to swap relocations in. HTAB is the bfd's
46 elf32_arm_link_hash_entry. */
47 #define SWAP_RELOC_IN(HTAB) \
49 ? bfd_elf32_swap_reloc_in \
50 : bfd_elf32_swap_reloca_in)
52 /* Return function to swap relocations out. HTAB is the bfd's
53 elf32_arm_link_hash_entry. */
54 #define SWAP_RELOC_OUT(HTAB) \
56 ? bfd_elf32_swap_reloc_out \
57 : bfd_elf32_swap_reloca_out)
59 #define elf_info_to_howto 0
60 #define elf_info_to_howto_rel elf32_arm_info_to_howto
62 #define ARM_ELF_ABI_VERSION 0
63 #define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
65 static struct elf_backend_data elf32_arm_vxworks_bed;
67 /* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
68 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
71 static reloc_howto_type elf32_arm_howto_table_1[] =
74 HOWTO (R_ARM_NONE, /* type */
76 0, /* size (0 = byte, 1 = short, 2 = long) */
78 FALSE, /* pc_relative */
80 complain_overflow_dont,/* complain_on_overflow */
81 bfd_elf_generic_reloc, /* special_function */
82 "R_ARM_NONE", /* name */
83 FALSE, /* partial_inplace */
86 FALSE), /* pcrel_offset */
88 HOWTO (R_ARM_PC24, /* type */
90 2, /* size (0 = byte, 1 = short, 2 = long) */
92 TRUE, /* pc_relative */
94 complain_overflow_signed,/* complain_on_overflow */
95 bfd_elf_generic_reloc, /* special_function */
96 "R_ARM_PC24", /* name */
97 FALSE, /* partial_inplace */
98 0x00ffffff, /* src_mask */
99 0x00ffffff, /* dst_mask */
100 TRUE), /* pcrel_offset */
102 /* 32 bit absolute */
103 HOWTO (R_ARM_ABS32, /* type */
105 2, /* size (0 = byte, 1 = short, 2 = long) */
107 FALSE, /* pc_relative */
109 complain_overflow_bitfield,/* complain_on_overflow */
110 bfd_elf_generic_reloc, /* special_function */
111 "R_ARM_ABS32", /* name */
112 FALSE, /* partial_inplace */
113 0xffffffff, /* src_mask */
114 0xffffffff, /* dst_mask */
115 FALSE), /* pcrel_offset */
117 /* standard 32bit pc-relative reloc */
118 HOWTO (R_ARM_REL32, /* type */
120 2, /* size (0 = byte, 1 = short, 2 = long) */
122 TRUE, /* pc_relative */
124 complain_overflow_bitfield,/* complain_on_overflow */
125 bfd_elf_generic_reloc, /* special_function */
126 "R_ARM_REL32", /* name */
127 FALSE, /* partial_inplace */
128 0xffffffff, /* src_mask */
129 0xffffffff, /* dst_mask */
130 TRUE), /* pcrel_offset */
132 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
133 HOWTO (R_ARM_LDR_PC_G0, /* type */
135 0, /* size (0 = byte, 1 = short, 2 = long) */
137 TRUE, /* pc_relative */
139 complain_overflow_dont,/* complain_on_overflow */
140 bfd_elf_generic_reloc, /* special_function */
141 "R_ARM_LDR_PC_G0", /* name */
142 FALSE, /* partial_inplace */
143 0xffffffff, /* src_mask */
144 0xffffffff, /* dst_mask */
145 TRUE), /* pcrel_offset */
147 /* 16 bit absolute */
148 HOWTO (R_ARM_ABS16, /* type */
150 1, /* size (0 = byte, 1 = short, 2 = long) */
152 FALSE, /* pc_relative */
154 complain_overflow_bitfield,/* complain_on_overflow */
155 bfd_elf_generic_reloc, /* special_function */
156 "R_ARM_ABS16", /* name */
157 FALSE, /* partial_inplace */
158 0x0000ffff, /* src_mask */
159 0x0000ffff, /* dst_mask */
160 FALSE), /* pcrel_offset */
162 /* 12 bit absolute */
163 HOWTO (R_ARM_ABS12, /* type */
165 2, /* size (0 = byte, 1 = short, 2 = long) */
167 FALSE, /* pc_relative */
169 complain_overflow_bitfield,/* complain_on_overflow */
170 bfd_elf_generic_reloc, /* special_function */
171 "R_ARM_ABS12", /* name */
172 FALSE, /* partial_inplace */
173 0x00000fff, /* src_mask */
174 0x00000fff, /* dst_mask */
175 FALSE), /* pcrel_offset */
177 HOWTO (R_ARM_THM_ABS5, /* type */
179 1, /* size (0 = byte, 1 = short, 2 = long) */
181 FALSE, /* pc_relative */
183 complain_overflow_bitfield,/* complain_on_overflow */
184 bfd_elf_generic_reloc, /* special_function */
185 "R_ARM_THM_ABS5", /* name */
186 FALSE, /* partial_inplace */
187 0x000007e0, /* src_mask */
188 0x000007e0, /* dst_mask */
189 FALSE), /* pcrel_offset */
192 HOWTO (R_ARM_ABS8, /* type */
194 0, /* size (0 = byte, 1 = short, 2 = long) */
196 FALSE, /* pc_relative */
198 complain_overflow_bitfield,/* complain_on_overflow */
199 bfd_elf_generic_reloc, /* special_function */
200 "R_ARM_ABS8", /* name */
201 FALSE, /* partial_inplace */
202 0x000000ff, /* src_mask */
203 0x000000ff, /* dst_mask */
204 FALSE), /* pcrel_offset */
206 HOWTO (R_ARM_SBREL32, /* type */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
210 FALSE, /* pc_relative */
212 complain_overflow_dont,/* complain_on_overflow */
213 bfd_elf_generic_reloc, /* special_function */
214 "R_ARM_SBREL32", /* name */
215 FALSE, /* partial_inplace */
216 0xffffffff, /* src_mask */
217 0xffffffff, /* dst_mask */
218 FALSE), /* pcrel_offset */
220 HOWTO (R_ARM_THM_CALL, /* type */
222 2, /* size (0 = byte, 1 = short, 2 = long) */
224 TRUE, /* pc_relative */
226 complain_overflow_signed,/* complain_on_overflow */
227 bfd_elf_generic_reloc, /* special_function */
228 "R_ARM_THM_CALL", /* name */
229 FALSE, /* partial_inplace */
230 0x07ff07ff, /* src_mask */
231 0x07ff07ff, /* dst_mask */
232 TRUE), /* pcrel_offset */
234 HOWTO (R_ARM_THM_PC8, /* type */
236 1, /* size (0 = byte, 1 = short, 2 = long) */
238 TRUE, /* pc_relative */
240 complain_overflow_signed,/* complain_on_overflow */
241 bfd_elf_generic_reloc, /* special_function */
242 "R_ARM_THM_PC8", /* name */
243 FALSE, /* partial_inplace */
244 0x000000ff, /* src_mask */
245 0x000000ff, /* dst_mask */
246 TRUE), /* pcrel_offset */
248 HOWTO (R_ARM_BREL_ADJ, /* type */
250 1, /* size (0 = byte, 1 = short, 2 = long) */
252 FALSE, /* pc_relative */
254 complain_overflow_signed,/* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_ARM_BREL_ADJ", /* name */
257 FALSE, /* partial_inplace */
258 0xffffffff, /* src_mask */
259 0xffffffff, /* dst_mask */
260 FALSE), /* pcrel_offset */
262 HOWTO (R_ARM_SWI24, /* type */
264 0, /* size (0 = byte, 1 = short, 2 = long) */
266 FALSE, /* pc_relative */
268 complain_overflow_signed,/* complain_on_overflow */
269 bfd_elf_generic_reloc, /* special_function */
270 "R_ARM_SWI24", /* name */
271 FALSE, /* partial_inplace */
272 0x00000000, /* src_mask */
273 0x00000000, /* dst_mask */
274 FALSE), /* pcrel_offset */
276 HOWTO (R_ARM_THM_SWI8, /* type */
278 0, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE, /* pc_relative */
282 complain_overflow_signed,/* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_ARM_SWI8", /* name */
285 FALSE, /* partial_inplace */
286 0x00000000, /* src_mask */
287 0x00000000, /* dst_mask */
288 FALSE), /* pcrel_offset */
290 /* BLX instruction for the ARM. */
291 HOWTO (R_ARM_XPC25, /* type */
293 2, /* size (0 = byte, 1 = short, 2 = long) */
295 TRUE, /* pc_relative */
297 complain_overflow_signed,/* complain_on_overflow */
298 bfd_elf_generic_reloc, /* special_function */
299 "R_ARM_XPC25", /* name */
300 FALSE, /* partial_inplace */
301 0x00ffffff, /* src_mask */
302 0x00ffffff, /* dst_mask */
303 TRUE), /* pcrel_offset */
305 /* BLX instruction for the Thumb. */
306 HOWTO (R_ARM_THM_XPC22, /* type */
308 2, /* size (0 = byte, 1 = short, 2 = long) */
310 TRUE, /* pc_relative */
312 complain_overflow_signed,/* complain_on_overflow */
313 bfd_elf_generic_reloc, /* special_function */
314 "R_ARM_THM_XPC22", /* name */
315 FALSE, /* partial_inplace */
316 0x07ff07ff, /* src_mask */
317 0x07ff07ff, /* dst_mask */
318 TRUE), /* pcrel_offset */
320 /* Dynamic TLS relocations. */
322 HOWTO (R_ARM_TLS_DTPMOD32, /* type */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE, /* pc_relative */
328 complain_overflow_bitfield,/* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_ARM_TLS_DTPMOD32", /* name */
331 TRUE, /* partial_inplace */
332 0xffffffff, /* src_mask */
333 0xffffffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
336 HOWTO (R_ARM_TLS_DTPOFF32, /* type */
338 2, /* size (0 = byte, 1 = short, 2 = long) */
340 FALSE, /* pc_relative */
342 complain_overflow_bitfield,/* complain_on_overflow */
343 bfd_elf_generic_reloc, /* special_function */
344 "R_ARM_TLS_DTPOFF32", /* name */
345 TRUE, /* partial_inplace */
346 0xffffffff, /* src_mask */
347 0xffffffff, /* dst_mask */
348 FALSE), /* pcrel_offset */
350 HOWTO (R_ARM_TLS_TPOFF32, /* type */
352 2, /* size (0 = byte, 1 = short, 2 = long) */
354 FALSE, /* pc_relative */
356 complain_overflow_bitfield,/* complain_on_overflow */
357 bfd_elf_generic_reloc, /* special_function */
358 "R_ARM_TLS_TPOFF32", /* name */
359 TRUE, /* partial_inplace */
360 0xffffffff, /* src_mask */
361 0xffffffff, /* dst_mask */
362 FALSE), /* pcrel_offset */
364 /* Relocs used in ARM Linux */
366 HOWTO (R_ARM_COPY, /* type */
368 2, /* size (0 = byte, 1 = short, 2 = long) */
370 FALSE, /* pc_relative */
372 complain_overflow_bitfield,/* complain_on_overflow */
373 bfd_elf_generic_reloc, /* special_function */
374 "R_ARM_COPY", /* name */
375 TRUE, /* partial_inplace */
376 0xffffffff, /* src_mask */
377 0xffffffff, /* dst_mask */
378 FALSE), /* pcrel_offset */
380 HOWTO (R_ARM_GLOB_DAT, /* type */
382 2, /* size (0 = byte, 1 = short, 2 = long) */
384 FALSE, /* pc_relative */
386 complain_overflow_bitfield,/* complain_on_overflow */
387 bfd_elf_generic_reloc, /* special_function */
388 "R_ARM_GLOB_DAT", /* name */
389 TRUE, /* partial_inplace */
390 0xffffffff, /* src_mask */
391 0xffffffff, /* dst_mask */
392 FALSE), /* pcrel_offset */
394 HOWTO (R_ARM_JUMP_SLOT, /* type */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
398 FALSE, /* pc_relative */
400 complain_overflow_bitfield,/* complain_on_overflow */
401 bfd_elf_generic_reloc, /* special_function */
402 "R_ARM_JUMP_SLOT", /* name */
403 TRUE, /* partial_inplace */
404 0xffffffff, /* src_mask */
405 0xffffffff, /* dst_mask */
406 FALSE), /* pcrel_offset */
408 HOWTO (R_ARM_RELATIVE, /* type */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
412 FALSE, /* pc_relative */
414 complain_overflow_bitfield,/* complain_on_overflow */
415 bfd_elf_generic_reloc, /* special_function */
416 "R_ARM_RELATIVE", /* name */
417 TRUE, /* partial_inplace */
418 0xffffffff, /* src_mask */
419 0xffffffff, /* dst_mask */
420 FALSE), /* pcrel_offset */
422 HOWTO (R_ARM_GOTOFF32, /* type */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
426 FALSE, /* pc_relative */
428 complain_overflow_bitfield,/* complain_on_overflow */
429 bfd_elf_generic_reloc, /* special_function */
430 "R_ARM_GOTOFF32", /* name */
431 TRUE, /* partial_inplace */
432 0xffffffff, /* src_mask */
433 0xffffffff, /* dst_mask */
434 FALSE), /* pcrel_offset */
436 HOWTO (R_ARM_GOTPC, /* type */
438 2, /* size (0 = byte, 1 = short, 2 = long) */
440 TRUE, /* pc_relative */
442 complain_overflow_bitfield,/* complain_on_overflow */
443 bfd_elf_generic_reloc, /* special_function */
444 "R_ARM_GOTPC", /* name */
445 TRUE, /* partial_inplace */
446 0xffffffff, /* src_mask */
447 0xffffffff, /* dst_mask */
448 TRUE), /* pcrel_offset */
450 HOWTO (R_ARM_GOT32, /* type */
452 2, /* size (0 = byte, 1 = short, 2 = long) */
454 FALSE, /* pc_relative */
456 complain_overflow_bitfield,/* complain_on_overflow */
457 bfd_elf_generic_reloc, /* special_function */
458 "R_ARM_GOT32", /* name */
459 TRUE, /* partial_inplace */
460 0xffffffff, /* src_mask */
461 0xffffffff, /* dst_mask */
462 FALSE), /* pcrel_offset */
464 HOWTO (R_ARM_PLT32, /* type */
466 2, /* size (0 = byte, 1 = short, 2 = long) */
468 TRUE, /* pc_relative */
470 complain_overflow_bitfield,/* complain_on_overflow */
471 bfd_elf_generic_reloc, /* special_function */
472 "R_ARM_PLT32", /* name */
473 FALSE, /* partial_inplace */
474 0x00ffffff, /* src_mask */
475 0x00ffffff, /* dst_mask */
476 TRUE), /* pcrel_offset */
478 HOWTO (R_ARM_CALL, /* type */
480 2, /* size (0 = byte, 1 = short, 2 = long) */
482 TRUE, /* pc_relative */
484 complain_overflow_signed,/* complain_on_overflow */
485 bfd_elf_generic_reloc, /* special_function */
486 "R_ARM_CALL", /* name */
487 FALSE, /* partial_inplace */
488 0x00ffffff, /* src_mask */
489 0x00ffffff, /* dst_mask */
490 TRUE), /* pcrel_offset */
492 HOWTO (R_ARM_JUMP24, /* type */
494 2, /* size (0 = byte, 1 = short, 2 = long) */
496 TRUE, /* pc_relative */
498 complain_overflow_signed,/* complain_on_overflow */
499 bfd_elf_generic_reloc, /* special_function */
500 "R_ARM_JUMP24", /* name */
501 FALSE, /* partial_inplace */
502 0x00ffffff, /* src_mask */
503 0x00ffffff, /* dst_mask */
504 TRUE), /* pcrel_offset */
506 HOWTO (R_ARM_THM_JUMP24, /* type */
508 2, /* size (0 = byte, 1 = short, 2 = long) */
510 TRUE, /* pc_relative */
512 complain_overflow_signed,/* complain_on_overflow */
513 bfd_elf_generic_reloc, /* special_function */
514 "R_ARM_THM_JUMP24", /* name */
515 FALSE, /* partial_inplace */
516 0x07ff2fff, /* src_mask */
517 0x07ff2fff, /* dst_mask */
518 TRUE), /* pcrel_offset */
520 HOWTO (R_ARM_BASE_ABS, /* type */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
524 FALSE, /* pc_relative */
526 complain_overflow_dont,/* complain_on_overflow */
527 bfd_elf_generic_reloc, /* special_function */
528 "R_ARM_BASE_ABS", /* name */
529 FALSE, /* partial_inplace */
530 0xffffffff, /* src_mask */
531 0xffffffff, /* dst_mask */
532 FALSE), /* pcrel_offset */
534 HOWTO (R_ARM_ALU_PCREL7_0, /* type */
536 2, /* size (0 = byte, 1 = short, 2 = long) */
538 TRUE, /* pc_relative */
540 complain_overflow_dont,/* complain_on_overflow */
541 bfd_elf_generic_reloc, /* special_function */
542 "R_ARM_ALU_PCREL_7_0", /* name */
543 FALSE, /* partial_inplace */
544 0x00000fff, /* src_mask */
545 0x00000fff, /* dst_mask */
546 TRUE), /* pcrel_offset */
548 HOWTO (R_ARM_ALU_PCREL15_8, /* type */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
552 TRUE, /* pc_relative */
554 complain_overflow_dont,/* complain_on_overflow */
555 bfd_elf_generic_reloc, /* special_function */
556 "R_ARM_ALU_PCREL_15_8",/* name */
557 FALSE, /* partial_inplace */
558 0x00000fff, /* src_mask */
559 0x00000fff, /* dst_mask */
560 TRUE), /* pcrel_offset */
562 HOWTO (R_ARM_ALU_PCREL23_15, /* type */
564 2, /* size (0 = byte, 1 = short, 2 = long) */
566 TRUE, /* pc_relative */
568 complain_overflow_dont,/* complain_on_overflow */
569 bfd_elf_generic_reloc, /* special_function */
570 "R_ARM_ALU_PCREL_23_15",/* name */
571 FALSE, /* partial_inplace */
572 0x00000fff, /* src_mask */
573 0x00000fff, /* dst_mask */
574 TRUE), /* pcrel_offset */
576 HOWTO (R_ARM_LDR_SBREL_11_0, /* type */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
580 FALSE, /* pc_relative */
582 complain_overflow_dont,/* complain_on_overflow */
583 bfd_elf_generic_reloc, /* special_function */
584 "R_ARM_LDR_SBREL_11_0",/* name */
585 FALSE, /* partial_inplace */
586 0x00000fff, /* src_mask */
587 0x00000fff, /* dst_mask */
588 FALSE), /* pcrel_offset */
590 HOWTO (R_ARM_ALU_SBREL_19_12, /* type */
592 2, /* size (0 = byte, 1 = short, 2 = long) */
594 FALSE, /* pc_relative */
596 complain_overflow_dont,/* complain_on_overflow */
597 bfd_elf_generic_reloc, /* special_function */
598 "R_ARM_ALU_SBREL_19_12",/* name */
599 FALSE, /* partial_inplace */
600 0x000ff000, /* src_mask */
601 0x000ff000, /* dst_mask */
602 FALSE), /* pcrel_offset */
604 HOWTO (R_ARM_ALU_SBREL_27_20, /* type */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
608 FALSE, /* pc_relative */
610 complain_overflow_dont,/* complain_on_overflow */
611 bfd_elf_generic_reloc, /* special_function */
612 "R_ARM_ALU_SBREL_27_20",/* name */
613 FALSE, /* partial_inplace */
614 0x0ff00000, /* src_mask */
615 0x0ff00000, /* dst_mask */
616 FALSE), /* pcrel_offset */
618 HOWTO (R_ARM_TARGET1, /* type */
620 2, /* size (0 = byte, 1 = short, 2 = long) */
622 FALSE, /* pc_relative */
624 complain_overflow_dont,/* complain_on_overflow */
625 bfd_elf_generic_reloc, /* special_function */
626 "R_ARM_TARGET1", /* name */
627 FALSE, /* partial_inplace */
628 0xffffffff, /* src_mask */
629 0xffffffff, /* dst_mask */
630 FALSE), /* pcrel_offset */
632 HOWTO (R_ARM_ROSEGREL32, /* type */
634 2, /* size (0 = byte, 1 = short, 2 = long) */
636 FALSE, /* pc_relative */
638 complain_overflow_dont,/* complain_on_overflow */
639 bfd_elf_generic_reloc, /* special_function */
640 "R_ARM_ROSEGREL32", /* name */
641 FALSE, /* partial_inplace */
642 0xffffffff, /* src_mask */
643 0xffffffff, /* dst_mask */
644 FALSE), /* pcrel_offset */
646 HOWTO (R_ARM_V4BX, /* type */
648 2, /* size (0 = byte, 1 = short, 2 = long) */
650 FALSE, /* pc_relative */
652 complain_overflow_dont,/* complain_on_overflow */
653 bfd_elf_generic_reloc, /* special_function */
654 "R_ARM_V4BX", /* name */
655 FALSE, /* partial_inplace */
656 0xffffffff, /* src_mask */
657 0xffffffff, /* dst_mask */
658 FALSE), /* pcrel_offset */
660 HOWTO (R_ARM_TARGET2, /* type */
662 2, /* size (0 = byte, 1 = short, 2 = long) */
664 FALSE, /* pc_relative */
666 complain_overflow_signed,/* complain_on_overflow */
667 bfd_elf_generic_reloc, /* special_function */
668 "R_ARM_TARGET2", /* name */
669 FALSE, /* partial_inplace */
670 0xffffffff, /* src_mask */
671 0xffffffff, /* dst_mask */
672 TRUE), /* pcrel_offset */
674 HOWTO (R_ARM_PREL31, /* type */
676 2, /* size (0 = byte, 1 = short, 2 = long) */
678 TRUE, /* pc_relative */
680 complain_overflow_signed,/* complain_on_overflow */
681 bfd_elf_generic_reloc, /* special_function */
682 "R_ARM_PREL31", /* name */
683 FALSE, /* partial_inplace */
684 0x7fffffff, /* src_mask */
685 0x7fffffff, /* dst_mask */
686 TRUE), /* pcrel_offset */
688 HOWTO (R_ARM_MOVW_ABS_NC, /* type */
690 2, /* size (0 = byte, 1 = short, 2 = long) */
692 FALSE, /* pc_relative */
694 complain_overflow_dont,/* complain_on_overflow */
695 bfd_elf_generic_reloc, /* special_function */
696 "R_ARM_MOVW_ABS_NC", /* name */
697 FALSE, /* partial_inplace */
698 0x0000ffff, /* src_mask */
699 0x0000ffff, /* dst_mask */
700 FALSE), /* pcrel_offset */
702 HOWTO (R_ARM_MOVT_ABS, /* type */
704 2, /* size (0 = byte, 1 = short, 2 = long) */
706 FALSE, /* pc_relative */
708 complain_overflow_bitfield,/* complain_on_overflow */
709 bfd_elf_generic_reloc, /* special_function */
710 "R_ARM_MOVT_ABS", /* name */
711 FALSE, /* partial_inplace */
712 0x0000ffff, /* src_mask */
713 0x0000ffff, /* dst_mask */
714 FALSE), /* pcrel_offset */
716 HOWTO (R_ARM_MOVW_PREL_NC, /* type */
718 2, /* size (0 = byte, 1 = short, 2 = long) */
720 TRUE, /* pc_relative */
722 complain_overflow_dont,/* complain_on_overflow */
723 bfd_elf_generic_reloc, /* special_function */
724 "R_ARM_MOVW_PREL_NC", /* name */
725 FALSE, /* partial_inplace */
726 0x0000ffff, /* src_mask */
727 0x0000ffff, /* dst_mask */
728 TRUE), /* pcrel_offset */
730 HOWTO (R_ARM_MOVT_PREL, /* type */
732 2, /* size (0 = byte, 1 = short, 2 = long) */
734 TRUE, /* pc_relative */
736 complain_overflow_bitfield,/* complain_on_overflow */
737 bfd_elf_generic_reloc, /* special_function */
738 "R_ARM_MOVT_PREL", /* name */
739 FALSE, /* partial_inplace */
740 0x0000ffff, /* src_mask */
741 0x0000ffff, /* dst_mask */
742 TRUE), /* pcrel_offset */
744 HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */
746 2, /* size (0 = byte, 1 = short, 2 = long) */
748 FALSE, /* pc_relative */
750 complain_overflow_dont,/* complain_on_overflow */
751 bfd_elf_generic_reloc, /* special_function */
752 "R_ARM_THM_MOVW_ABS_NC",/* name */
753 FALSE, /* partial_inplace */
754 0x040f70ff, /* src_mask */
755 0x040f70ff, /* dst_mask */
756 FALSE), /* pcrel_offset */
758 HOWTO (R_ARM_THM_MOVT_ABS, /* type */
760 2, /* size (0 = byte, 1 = short, 2 = long) */
762 FALSE, /* pc_relative */
764 complain_overflow_bitfield,/* complain_on_overflow */
765 bfd_elf_generic_reloc, /* special_function */
766 "R_ARM_THM_MOVT_ABS", /* name */
767 FALSE, /* partial_inplace */
768 0x040f70ff, /* src_mask */
769 0x040f70ff, /* dst_mask */
770 FALSE), /* pcrel_offset */
772 HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */
774 2, /* size (0 = byte, 1 = short, 2 = long) */
776 TRUE, /* pc_relative */
778 complain_overflow_dont,/* complain_on_overflow */
779 bfd_elf_generic_reloc, /* special_function */
780 "R_ARM_THM_MOVW_PREL_NC",/* name */
781 FALSE, /* partial_inplace */
782 0x040f70ff, /* src_mask */
783 0x040f70ff, /* dst_mask */
784 TRUE), /* pcrel_offset */
786 HOWTO (R_ARM_THM_MOVT_PREL, /* type */
788 2, /* size (0 = byte, 1 = short, 2 = long) */
790 TRUE, /* pc_relative */
792 complain_overflow_bitfield,/* complain_on_overflow */
793 bfd_elf_generic_reloc, /* special_function */
794 "R_ARM_THM_MOVT_PREL", /* name */
795 FALSE, /* partial_inplace */
796 0x040f70ff, /* src_mask */
797 0x040f70ff, /* dst_mask */
798 TRUE), /* pcrel_offset */
800 HOWTO (R_ARM_THM_JUMP19, /* type */
802 2, /* size (0 = byte, 1 = short, 2 = long) */
804 TRUE, /* pc_relative */
806 complain_overflow_signed,/* complain_on_overflow */
807 bfd_elf_generic_reloc, /* special_function */
808 "R_ARM_THM_JUMP19", /* name */
809 FALSE, /* partial_inplace */
810 0x043f2fff, /* src_mask */
811 0x043f2fff, /* dst_mask */
812 TRUE), /* pcrel_offset */
814 HOWTO (R_ARM_THM_JUMP6, /* type */
816 1, /* size (0 = byte, 1 = short, 2 = long) */
818 TRUE, /* pc_relative */
820 complain_overflow_unsigned,/* complain_on_overflow */
821 bfd_elf_generic_reloc, /* special_function */
822 "R_ARM_THM_JUMP6", /* name */
823 FALSE, /* partial_inplace */
824 0x02f8, /* src_mask */
825 0x02f8, /* dst_mask */
826 TRUE), /* pcrel_offset */
828 /* These are declared as 13-bit signed relocations because we can
829 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
831 HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */
833 2, /* size (0 = byte, 1 = short, 2 = long) */
835 TRUE, /* pc_relative */
837 complain_overflow_dont,/* complain_on_overflow */
838 bfd_elf_generic_reloc, /* special_function */
839 "R_ARM_THM_ALU_PREL_11_0",/* name */
840 FALSE, /* partial_inplace */
841 0xffffffff, /* src_mask */
842 0xffffffff, /* dst_mask */
843 TRUE), /* pcrel_offset */
845 HOWTO (R_ARM_THM_PC12, /* type */
847 2, /* size (0 = byte, 1 = short, 2 = long) */
849 TRUE, /* pc_relative */
851 complain_overflow_dont,/* complain_on_overflow */
852 bfd_elf_generic_reloc, /* special_function */
853 "R_ARM_THM_PC12", /* name */
854 FALSE, /* partial_inplace */
855 0xffffffff, /* src_mask */
856 0xffffffff, /* dst_mask */
857 TRUE), /* pcrel_offset */
859 HOWTO (R_ARM_ABS32_NOI, /* type */
861 2, /* size (0 = byte, 1 = short, 2 = long) */
863 FALSE, /* pc_relative */
865 complain_overflow_dont,/* complain_on_overflow */
866 bfd_elf_generic_reloc, /* special_function */
867 "R_ARM_ABS32_NOI", /* name */
868 FALSE, /* partial_inplace */
869 0xffffffff, /* src_mask */
870 0xffffffff, /* dst_mask */
871 FALSE), /* pcrel_offset */
873 HOWTO (R_ARM_REL32_NOI, /* type */
875 2, /* size (0 = byte, 1 = short, 2 = long) */
877 TRUE, /* pc_relative */
879 complain_overflow_dont,/* complain_on_overflow */
880 bfd_elf_generic_reloc, /* special_function */
881 "R_ARM_REL32_NOI", /* name */
882 FALSE, /* partial_inplace */
883 0xffffffff, /* src_mask */
884 0xffffffff, /* dst_mask */
885 FALSE), /* pcrel_offset */
887 /* Group relocations. */
889 HOWTO (R_ARM_ALU_PC_G0_NC, /* type */
891 2, /* size (0 = byte, 1 = short, 2 = long) */
893 TRUE, /* pc_relative */
895 complain_overflow_dont,/* complain_on_overflow */
896 bfd_elf_generic_reloc, /* special_function */
897 "R_ARM_ALU_PC_G0_NC", /* name */
898 FALSE, /* partial_inplace */
899 0xffffffff, /* src_mask */
900 0xffffffff, /* dst_mask */
901 TRUE), /* pcrel_offset */
903 HOWTO (R_ARM_ALU_PC_G0, /* type */
905 2, /* size (0 = byte, 1 = short, 2 = long) */
907 TRUE, /* pc_relative */
909 complain_overflow_dont,/* complain_on_overflow */
910 bfd_elf_generic_reloc, /* special_function */
911 "R_ARM_ALU_PC_G0", /* name */
912 FALSE, /* partial_inplace */
913 0xffffffff, /* src_mask */
914 0xffffffff, /* dst_mask */
915 TRUE), /* pcrel_offset */
917 HOWTO (R_ARM_ALU_PC_G1_NC, /* type */
919 2, /* size (0 = byte, 1 = short, 2 = long) */
921 TRUE, /* pc_relative */
923 complain_overflow_dont,/* complain_on_overflow */
924 bfd_elf_generic_reloc, /* special_function */
925 "R_ARM_ALU_PC_G1_NC", /* name */
926 FALSE, /* partial_inplace */
927 0xffffffff, /* src_mask */
928 0xffffffff, /* dst_mask */
929 TRUE), /* pcrel_offset */
931 HOWTO (R_ARM_ALU_PC_G1, /* type */
933 2, /* size (0 = byte, 1 = short, 2 = long) */
935 TRUE, /* pc_relative */
937 complain_overflow_dont,/* complain_on_overflow */
938 bfd_elf_generic_reloc, /* special_function */
939 "R_ARM_ALU_PC_G1", /* name */
940 FALSE, /* partial_inplace */
941 0xffffffff, /* src_mask */
942 0xffffffff, /* dst_mask */
943 TRUE), /* pcrel_offset */
945 HOWTO (R_ARM_ALU_PC_G2, /* type */
947 2, /* size (0 = byte, 1 = short, 2 = long) */
949 TRUE, /* pc_relative */
951 complain_overflow_dont,/* complain_on_overflow */
952 bfd_elf_generic_reloc, /* special_function */
953 "R_ARM_ALU_PC_G2", /* name */
954 FALSE, /* partial_inplace */
955 0xffffffff, /* src_mask */
956 0xffffffff, /* dst_mask */
957 TRUE), /* pcrel_offset */
959 HOWTO (R_ARM_LDR_PC_G1, /* type */
961 2, /* size (0 = byte, 1 = short, 2 = long) */
963 TRUE, /* pc_relative */
965 complain_overflow_dont,/* complain_on_overflow */
966 bfd_elf_generic_reloc, /* special_function */
967 "R_ARM_LDR_PC_G1", /* name */
968 FALSE, /* partial_inplace */
969 0xffffffff, /* src_mask */
970 0xffffffff, /* dst_mask */
971 TRUE), /* pcrel_offset */
973 HOWTO (R_ARM_LDR_PC_G2, /* type */
975 2, /* size (0 = byte, 1 = short, 2 = long) */
977 TRUE, /* pc_relative */
979 complain_overflow_dont,/* complain_on_overflow */
980 bfd_elf_generic_reloc, /* special_function */
981 "R_ARM_LDR_PC_G2", /* name */
982 FALSE, /* partial_inplace */
983 0xffffffff, /* src_mask */
984 0xffffffff, /* dst_mask */
985 TRUE), /* pcrel_offset */
987 HOWTO (R_ARM_LDRS_PC_G0, /* type */
989 2, /* size (0 = byte, 1 = short, 2 = long) */
991 TRUE, /* pc_relative */
993 complain_overflow_dont,/* complain_on_overflow */
994 bfd_elf_generic_reloc, /* special_function */
995 "R_ARM_LDRS_PC_G0", /* name */
996 FALSE, /* partial_inplace */
997 0xffffffff, /* src_mask */
998 0xffffffff, /* dst_mask */
999 TRUE), /* pcrel_offset */
1001 HOWTO (R_ARM_LDRS_PC_G1, /* type */
1003 2, /* size (0 = byte, 1 = short, 2 = long) */
1005 TRUE, /* pc_relative */
1007 complain_overflow_dont,/* complain_on_overflow */
1008 bfd_elf_generic_reloc, /* special_function */
1009 "R_ARM_LDRS_PC_G1", /* name */
1010 FALSE, /* partial_inplace */
1011 0xffffffff, /* src_mask */
1012 0xffffffff, /* dst_mask */
1013 TRUE), /* pcrel_offset */
1015 HOWTO (R_ARM_LDRS_PC_G2, /* type */
1017 2, /* size (0 = byte, 1 = short, 2 = long) */
1019 TRUE, /* pc_relative */
1021 complain_overflow_dont,/* complain_on_overflow */
1022 bfd_elf_generic_reloc, /* special_function */
1023 "R_ARM_LDRS_PC_G2", /* name */
1024 FALSE, /* partial_inplace */
1025 0xffffffff, /* src_mask */
1026 0xffffffff, /* dst_mask */
1027 TRUE), /* pcrel_offset */
1029 HOWTO (R_ARM_LDC_PC_G0, /* type */
1031 2, /* size (0 = byte, 1 = short, 2 = long) */
1033 TRUE, /* pc_relative */
1035 complain_overflow_dont,/* complain_on_overflow */
1036 bfd_elf_generic_reloc, /* special_function */
1037 "R_ARM_LDC_PC_G0", /* name */
1038 FALSE, /* partial_inplace */
1039 0xffffffff, /* src_mask */
1040 0xffffffff, /* dst_mask */
1041 TRUE), /* pcrel_offset */
1043 HOWTO (R_ARM_LDC_PC_G1, /* type */
1045 2, /* size (0 = byte, 1 = short, 2 = long) */
1047 TRUE, /* pc_relative */
1049 complain_overflow_dont,/* complain_on_overflow */
1050 bfd_elf_generic_reloc, /* special_function */
1051 "R_ARM_LDC_PC_G1", /* name */
1052 FALSE, /* partial_inplace */
1053 0xffffffff, /* src_mask */
1054 0xffffffff, /* dst_mask */
1055 TRUE), /* pcrel_offset */
1057 HOWTO (R_ARM_LDC_PC_G2, /* type */
1059 2, /* size (0 = byte, 1 = short, 2 = long) */
1061 TRUE, /* pc_relative */
1063 complain_overflow_dont,/* complain_on_overflow */
1064 bfd_elf_generic_reloc, /* special_function */
1065 "R_ARM_LDC_PC_G2", /* name */
1066 FALSE, /* partial_inplace */
1067 0xffffffff, /* src_mask */
1068 0xffffffff, /* dst_mask */
1069 TRUE), /* pcrel_offset */
1071 HOWTO (R_ARM_ALU_SB_G0_NC, /* type */
1073 2, /* size (0 = byte, 1 = short, 2 = long) */
1075 TRUE, /* pc_relative */
1077 complain_overflow_dont,/* complain_on_overflow */
1078 bfd_elf_generic_reloc, /* special_function */
1079 "R_ARM_ALU_SB_G0_NC", /* name */
1080 FALSE, /* partial_inplace */
1081 0xffffffff, /* src_mask */
1082 0xffffffff, /* dst_mask */
1083 TRUE), /* pcrel_offset */
1085 HOWTO (R_ARM_ALU_SB_G0, /* type */
1087 2, /* size (0 = byte, 1 = short, 2 = long) */
1089 TRUE, /* pc_relative */
1091 complain_overflow_dont,/* complain_on_overflow */
1092 bfd_elf_generic_reloc, /* special_function */
1093 "R_ARM_ALU_SB_G0", /* name */
1094 FALSE, /* partial_inplace */
1095 0xffffffff, /* src_mask */
1096 0xffffffff, /* dst_mask */
1097 TRUE), /* pcrel_offset */
1099 HOWTO (R_ARM_ALU_SB_G1_NC, /* type */
1101 2, /* size (0 = byte, 1 = short, 2 = long) */
1103 TRUE, /* pc_relative */
1105 complain_overflow_dont,/* complain_on_overflow */
1106 bfd_elf_generic_reloc, /* special_function */
1107 "R_ARM_ALU_SB_G1_NC", /* name */
1108 FALSE, /* partial_inplace */
1109 0xffffffff, /* src_mask */
1110 0xffffffff, /* dst_mask */
1111 TRUE), /* pcrel_offset */
1113 HOWTO (R_ARM_ALU_SB_G1, /* type */
1115 2, /* size (0 = byte, 1 = short, 2 = long) */
1117 TRUE, /* pc_relative */
1119 complain_overflow_dont,/* complain_on_overflow */
1120 bfd_elf_generic_reloc, /* special_function */
1121 "R_ARM_ALU_SB_G1", /* name */
1122 FALSE, /* partial_inplace */
1123 0xffffffff, /* src_mask */
1124 0xffffffff, /* dst_mask */
1125 TRUE), /* pcrel_offset */
1127 HOWTO (R_ARM_ALU_SB_G2, /* type */
1129 2, /* size (0 = byte, 1 = short, 2 = long) */
1131 TRUE, /* pc_relative */
1133 complain_overflow_dont,/* complain_on_overflow */
1134 bfd_elf_generic_reloc, /* special_function */
1135 "R_ARM_ALU_SB_G2", /* name */
1136 FALSE, /* partial_inplace */
1137 0xffffffff, /* src_mask */
1138 0xffffffff, /* dst_mask */
1139 TRUE), /* pcrel_offset */
1141 HOWTO (R_ARM_LDR_SB_G0, /* type */
1143 2, /* size (0 = byte, 1 = short, 2 = long) */
1145 TRUE, /* pc_relative */
1147 complain_overflow_dont,/* complain_on_overflow */
1148 bfd_elf_generic_reloc, /* special_function */
1149 "R_ARM_LDR_SB_G0", /* name */
1150 FALSE, /* partial_inplace */
1151 0xffffffff, /* src_mask */
1152 0xffffffff, /* dst_mask */
1153 TRUE), /* pcrel_offset */
1155 HOWTO (R_ARM_LDR_SB_G1, /* type */
1157 2, /* size (0 = byte, 1 = short, 2 = long) */
1159 TRUE, /* pc_relative */
1161 complain_overflow_dont,/* complain_on_overflow */
1162 bfd_elf_generic_reloc, /* special_function */
1163 "R_ARM_LDR_SB_G1", /* name */
1164 FALSE, /* partial_inplace */
1165 0xffffffff, /* src_mask */
1166 0xffffffff, /* dst_mask */
1167 TRUE), /* pcrel_offset */
1169 HOWTO (R_ARM_LDR_SB_G2, /* type */
1171 2, /* size (0 = byte, 1 = short, 2 = long) */
1173 TRUE, /* pc_relative */
1175 complain_overflow_dont,/* complain_on_overflow */
1176 bfd_elf_generic_reloc, /* special_function */
1177 "R_ARM_LDR_SB_G2", /* name */
1178 FALSE, /* partial_inplace */
1179 0xffffffff, /* src_mask */
1180 0xffffffff, /* dst_mask */
1181 TRUE), /* pcrel_offset */
1183 HOWTO (R_ARM_LDRS_SB_G0, /* type */
1185 2, /* size (0 = byte, 1 = short, 2 = long) */
1187 TRUE, /* pc_relative */
1189 complain_overflow_dont,/* complain_on_overflow */
1190 bfd_elf_generic_reloc, /* special_function */
1191 "R_ARM_LDRS_SB_G0", /* name */
1192 FALSE, /* partial_inplace */
1193 0xffffffff, /* src_mask */
1194 0xffffffff, /* dst_mask */
1195 TRUE), /* pcrel_offset */
1197 HOWTO (R_ARM_LDRS_SB_G1, /* type */
1199 2, /* size (0 = byte, 1 = short, 2 = long) */
1201 TRUE, /* pc_relative */
1203 complain_overflow_dont,/* complain_on_overflow */
1204 bfd_elf_generic_reloc, /* special_function */
1205 "R_ARM_LDRS_SB_G1", /* name */
1206 FALSE, /* partial_inplace */
1207 0xffffffff, /* src_mask */
1208 0xffffffff, /* dst_mask */
1209 TRUE), /* pcrel_offset */
1211 HOWTO (R_ARM_LDRS_SB_G2, /* type */
1213 2, /* size (0 = byte, 1 = short, 2 = long) */
1215 TRUE, /* pc_relative */
1217 complain_overflow_dont,/* complain_on_overflow */
1218 bfd_elf_generic_reloc, /* special_function */
1219 "R_ARM_LDRS_SB_G2", /* name */
1220 FALSE, /* partial_inplace */
1221 0xffffffff, /* src_mask */
1222 0xffffffff, /* dst_mask */
1223 TRUE), /* pcrel_offset */
1225 HOWTO (R_ARM_LDC_SB_G0, /* type */
1227 2, /* size (0 = byte, 1 = short, 2 = long) */
1229 TRUE, /* pc_relative */
1231 complain_overflow_dont,/* complain_on_overflow */
1232 bfd_elf_generic_reloc, /* special_function */
1233 "R_ARM_LDC_SB_G0", /* name */
1234 FALSE, /* partial_inplace */
1235 0xffffffff, /* src_mask */
1236 0xffffffff, /* dst_mask */
1237 TRUE), /* pcrel_offset */
1239 HOWTO (R_ARM_LDC_SB_G1, /* type */
1241 2, /* size (0 = byte, 1 = short, 2 = long) */
1243 TRUE, /* pc_relative */
1245 complain_overflow_dont,/* complain_on_overflow */
1246 bfd_elf_generic_reloc, /* special_function */
1247 "R_ARM_LDC_SB_G1", /* name */
1248 FALSE, /* partial_inplace */
1249 0xffffffff, /* src_mask */
1250 0xffffffff, /* dst_mask */
1251 TRUE), /* pcrel_offset */
1253 HOWTO (R_ARM_LDC_SB_G2, /* type */
1255 2, /* size (0 = byte, 1 = short, 2 = long) */
1257 TRUE, /* pc_relative */
1259 complain_overflow_dont,/* complain_on_overflow */
1260 bfd_elf_generic_reloc, /* special_function */
1261 "R_ARM_LDC_SB_G2", /* name */
1262 FALSE, /* partial_inplace */
1263 0xffffffff, /* src_mask */
1264 0xffffffff, /* dst_mask */
1265 TRUE), /* pcrel_offset */
1267 /* End of group relocations. */
1269 HOWTO (R_ARM_MOVW_BREL_NC, /* type */
1271 2, /* size (0 = byte, 1 = short, 2 = long) */
1273 FALSE, /* pc_relative */
1275 complain_overflow_dont,/* complain_on_overflow */
1276 bfd_elf_generic_reloc, /* special_function */
1277 "R_ARM_MOVW_BREL_NC", /* name */
1278 FALSE, /* partial_inplace */
1279 0x0000ffff, /* src_mask */
1280 0x0000ffff, /* dst_mask */
1281 FALSE), /* pcrel_offset */
1283 HOWTO (R_ARM_MOVT_BREL, /* type */
1285 2, /* size (0 = byte, 1 = short, 2 = long) */
1287 FALSE, /* pc_relative */
1289 complain_overflow_bitfield,/* complain_on_overflow */
1290 bfd_elf_generic_reloc, /* special_function */
1291 "R_ARM_MOVT_BREL", /* name */
1292 FALSE, /* partial_inplace */
1293 0x0000ffff, /* src_mask */
1294 0x0000ffff, /* dst_mask */
1295 FALSE), /* pcrel_offset */
1297 HOWTO (R_ARM_MOVW_BREL, /* type */
1299 2, /* size (0 = byte, 1 = short, 2 = long) */
1301 FALSE, /* pc_relative */
1303 complain_overflow_dont,/* complain_on_overflow */
1304 bfd_elf_generic_reloc, /* special_function */
1305 "R_ARM_MOVW_BREL", /* name */
1306 FALSE, /* partial_inplace */
1307 0x0000ffff, /* src_mask */
1308 0x0000ffff, /* dst_mask */
1309 FALSE), /* pcrel_offset */
1311 HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */
1313 2, /* size (0 = byte, 1 = short, 2 = long) */
1315 FALSE, /* pc_relative */
1317 complain_overflow_dont,/* complain_on_overflow */
1318 bfd_elf_generic_reloc, /* special_function */
1319 "R_ARM_THM_MOVW_BREL_NC",/* name */
1320 FALSE, /* partial_inplace */
1321 0x040f70ff, /* src_mask */
1322 0x040f70ff, /* dst_mask */
1323 FALSE), /* pcrel_offset */
1325 HOWTO (R_ARM_THM_MOVT_BREL, /* type */
1327 2, /* size (0 = byte, 1 = short, 2 = long) */
1329 FALSE, /* pc_relative */
1331 complain_overflow_bitfield,/* complain_on_overflow */
1332 bfd_elf_generic_reloc, /* special_function */
1333 "R_ARM_THM_MOVT_BREL", /* name */
1334 FALSE, /* partial_inplace */
1335 0x040f70ff, /* src_mask */
1336 0x040f70ff, /* dst_mask */
1337 FALSE), /* pcrel_offset */
1339 HOWTO (R_ARM_THM_MOVW_BREL, /* type */
1341 2, /* size (0 = byte, 1 = short, 2 = long) */
1343 FALSE, /* pc_relative */
1345 complain_overflow_dont,/* complain_on_overflow */
1346 bfd_elf_generic_reloc, /* special_function */
1347 "R_ARM_THM_MOVW_BREL", /* name */
1348 FALSE, /* partial_inplace */
1349 0x040f70ff, /* src_mask */
1350 0x040f70ff, /* dst_mask */
1351 FALSE), /* pcrel_offset */
1353 EMPTY_HOWTO (90), /* unallocated */
1358 HOWTO (R_ARM_PLT32_ABS, /* type */
1360 2, /* size (0 = byte, 1 = short, 2 = long) */
1362 FALSE, /* pc_relative */
1364 complain_overflow_dont,/* complain_on_overflow */
1365 bfd_elf_generic_reloc, /* special_function */
1366 "R_ARM_PLT32_ABS", /* name */
1367 FALSE, /* partial_inplace */
1368 0xffffffff, /* src_mask */
1369 0xffffffff, /* dst_mask */
1370 FALSE), /* pcrel_offset */
1372 HOWTO (R_ARM_GOT_ABS, /* type */
1374 2, /* size (0 = byte, 1 = short, 2 = long) */
1376 FALSE, /* pc_relative */
1378 complain_overflow_dont,/* complain_on_overflow */
1379 bfd_elf_generic_reloc, /* special_function */
1380 "R_ARM_GOT_ABS", /* name */
1381 FALSE, /* partial_inplace */
1382 0xffffffff, /* src_mask */
1383 0xffffffff, /* dst_mask */
1384 FALSE), /* pcrel_offset */
1386 HOWTO (R_ARM_GOT_PREL, /* type */
1388 2, /* size (0 = byte, 1 = short, 2 = long) */
1390 TRUE, /* pc_relative */
1392 complain_overflow_dont, /* complain_on_overflow */
1393 bfd_elf_generic_reloc, /* special_function */
1394 "R_ARM_GOT_PREL", /* name */
1395 FALSE, /* partial_inplace */
1396 0xffffffff, /* src_mask */
1397 0xffffffff, /* dst_mask */
1398 TRUE), /* pcrel_offset */
1400 HOWTO (R_ARM_GOT_BREL12, /* type */
1402 2, /* size (0 = byte, 1 = short, 2 = long) */
1404 FALSE, /* pc_relative */
1406 complain_overflow_bitfield,/* complain_on_overflow */
1407 bfd_elf_generic_reloc, /* special_function */
1408 "R_ARM_GOT_BREL12", /* name */
1409 FALSE, /* partial_inplace */
1410 0x00000fff, /* src_mask */
1411 0x00000fff, /* dst_mask */
1412 FALSE), /* pcrel_offset */
1414 HOWTO (R_ARM_GOTOFF12, /* type */
1416 2, /* size (0 = byte, 1 = short, 2 = long) */
1418 FALSE, /* pc_relative */
1420 complain_overflow_bitfield,/* complain_on_overflow */
1421 bfd_elf_generic_reloc, /* special_function */
1422 "R_ARM_GOTOFF12", /* name */
1423 FALSE, /* partial_inplace */
1424 0x00000fff, /* src_mask */
1425 0x00000fff, /* dst_mask */
1426 FALSE), /* pcrel_offset */
1428 EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */
1430 /* GNU extension to record C++ vtable member usage */
1431 HOWTO (R_ARM_GNU_VTENTRY, /* type */
1433 2, /* size (0 = byte, 1 = short, 2 = long) */
1435 FALSE, /* pc_relative */
1437 complain_overflow_dont, /* complain_on_overflow */
1438 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1439 "R_ARM_GNU_VTENTRY", /* name */
1440 FALSE, /* partial_inplace */
1443 FALSE), /* pcrel_offset */
1445 /* GNU extension to record C++ vtable hierarchy */
1446 HOWTO (R_ARM_GNU_VTINHERIT, /* type */
1448 2, /* size (0 = byte, 1 = short, 2 = long) */
1450 FALSE, /* pc_relative */
1452 complain_overflow_dont, /* complain_on_overflow */
1453 NULL, /* special_function */
1454 "R_ARM_GNU_VTINHERIT", /* name */
1455 FALSE, /* partial_inplace */
1458 FALSE), /* pcrel_offset */
1460 HOWTO (R_ARM_THM_JUMP11, /* type */
1462 1, /* size (0 = byte, 1 = short, 2 = long) */
1464 TRUE, /* pc_relative */
1466 complain_overflow_signed, /* complain_on_overflow */
1467 bfd_elf_generic_reloc, /* special_function */
1468 "R_ARM_THM_JUMP11", /* name */
1469 FALSE, /* partial_inplace */
1470 0x000007ff, /* src_mask */
1471 0x000007ff, /* dst_mask */
1472 TRUE), /* pcrel_offset */
1474 HOWTO (R_ARM_THM_JUMP8, /* type */
1476 1, /* size (0 = byte, 1 = short, 2 = long) */
1478 TRUE, /* pc_relative */
1480 complain_overflow_signed, /* complain_on_overflow */
1481 bfd_elf_generic_reloc, /* special_function */
1482 "R_ARM_THM_JUMP8", /* name */
1483 FALSE, /* partial_inplace */
1484 0x000000ff, /* src_mask */
1485 0x000000ff, /* dst_mask */
1486 TRUE), /* pcrel_offset */
1488 /* TLS relocations */
1489 HOWTO (R_ARM_TLS_GD32, /* type */
1491 2, /* size (0 = byte, 1 = short, 2 = long) */
1493 FALSE, /* pc_relative */
1495 complain_overflow_bitfield,/* complain_on_overflow */
1496 NULL, /* special_function */
1497 "R_ARM_TLS_GD32", /* name */
1498 TRUE, /* partial_inplace */
1499 0xffffffff, /* src_mask */
1500 0xffffffff, /* dst_mask */
1501 FALSE), /* pcrel_offset */
1503 HOWTO (R_ARM_TLS_LDM32, /* type */
1505 2, /* size (0 = byte, 1 = short, 2 = long) */
1507 FALSE, /* pc_relative */
1509 complain_overflow_bitfield,/* complain_on_overflow */
1510 bfd_elf_generic_reloc, /* special_function */
1511 "R_ARM_TLS_LDM32", /* name */
1512 TRUE, /* partial_inplace */
1513 0xffffffff, /* src_mask */
1514 0xffffffff, /* dst_mask */
1515 FALSE), /* pcrel_offset */
1517 HOWTO (R_ARM_TLS_LDO32, /* type */
1519 2, /* size (0 = byte, 1 = short, 2 = long) */
1521 FALSE, /* pc_relative */
1523 complain_overflow_bitfield,/* complain_on_overflow */
1524 bfd_elf_generic_reloc, /* special_function */
1525 "R_ARM_TLS_LDO32", /* name */
1526 TRUE, /* partial_inplace */
1527 0xffffffff, /* src_mask */
1528 0xffffffff, /* dst_mask */
1529 FALSE), /* pcrel_offset */
1531 HOWTO (R_ARM_TLS_IE32, /* type */
1533 2, /* size (0 = byte, 1 = short, 2 = long) */
1535 FALSE, /* pc_relative */
1537 complain_overflow_bitfield,/* complain_on_overflow */
1538 NULL, /* special_function */
1539 "R_ARM_TLS_IE32", /* name */
1540 TRUE, /* partial_inplace */
1541 0xffffffff, /* src_mask */
1542 0xffffffff, /* dst_mask */
1543 FALSE), /* pcrel_offset */
1545 HOWTO (R_ARM_TLS_LE32, /* type */
1547 2, /* size (0 = byte, 1 = short, 2 = long) */
1549 FALSE, /* pc_relative */
1551 complain_overflow_bitfield,/* complain_on_overflow */
1552 bfd_elf_generic_reloc, /* special_function */
1553 "R_ARM_TLS_LE32", /* name */
1554 TRUE, /* partial_inplace */
1555 0xffffffff, /* src_mask */
1556 0xffffffff, /* dst_mask */
1557 FALSE), /* pcrel_offset */
1559 HOWTO (R_ARM_TLS_LDO12, /* type */
1561 2, /* size (0 = byte, 1 = short, 2 = long) */
1563 FALSE, /* pc_relative */
1565 complain_overflow_bitfield,/* complain_on_overflow */
1566 bfd_elf_generic_reloc, /* special_function */
1567 "R_ARM_TLS_LDO12", /* name */
1568 FALSE, /* partial_inplace */
1569 0x00000fff, /* src_mask */
1570 0x00000fff, /* dst_mask */
1571 FALSE), /* pcrel_offset */
1573 HOWTO (R_ARM_TLS_LE12, /* type */
1575 2, /* size (0 = byte, 1 = short, 2 = long) */
1577 FALSE, /* pc_relative */
1579 complain_overflow_bitfield,/* complain_on_overflow */
1580 bfd_elf_generic_reloc, /* special_function */
1581 "R_ARM_TLS_LE12", /* name */
1582 FALSE, /* partial_inplace */
1583 0x00000fff, /* src_mask */
1584 0x00000fff, /* dst_mask */
1585 FALSE), /* pcrel_offset */
1587 HOWTO (R_ARM_TLS_IE12GP, /* type */
1589 2, /* size (0 = byte, 1 = short, 2 = long) */
1591 FALSE, /* pc_relative */
1593 complain_overflow_bitfield,/* complain_on_overflow */
1594 bfd_elf_generic_reloc, /* special_function */
1595 "R_ARM_TLS_IE12GP", /* name */
1596 FALSE, /* partial_inplace */
1597 0x00000fff, /* src_mask */
1598 0x00000fff, /* dst_mask */
1599 FALSE), /* pcrel_offset */
1602 /* 112-127 private relocations
1603 128 R_ARM_ME_TOO, obsolete
1604 129-255 unallocated in AAELF.
1606 249-255 extended, currently unused, relocations: */
1608 static reloc_howto_type elf32_arm_howto_table_2[4] =
1610 HOWTO (R_ARM_RREL32, /* type */
1612 0, /* size (0 = byte, 1 = short, 2 = long) */
1614 FALSE, /* pc_relative */
1616 complain_overflow_dont,/* complain_on_overflow */
1617 bfd_elf_generic_reloc, /* special_function */
1618 "R_ARM_RREL32", /* name */
1619 FALSE, /* partial_inplace */
1622 FALSE), /* pcrel_offset */
1624 HOWTO (R_ARM_RABS32, /* type */
1626 0, /* size (0 = byte, 1 = short, 2 = long) */
1628 FALSE, /* pc_relative */
1630 complain_overflow_dont,/* complain_on_overflow */
1631 bfd_elf_generic_reloc, /* special_function */
1632 "R_ARM_RABS32", /* name */
1633 FALSE, /* partial_inplace */
1636 FALSE), /* pcrel_offset */
1638 HOWTO (R_ARM_RPC24, /* type */
1640 0, /* size (0 = byte, 1 = short, 2 = long) */
1642 FALSE, /* pc_relative */
1644 complain_overflow_dont,/* complain_on_overflow */
1645 bfd_elf_generic_reloc, /* special_function */
1646 "R_ARM_RPC24", /* name */
1647 FALSE, /* partial_inplace */
1650 FALSE), /* pcrel_offset */
1652 HOWTO (R_ARM_RBASE, /* type */
1654 0, /* size (0 = byte, 1 = short, 2 = long) */
1656 FALSE, /* pc_relative */
1658 complain_overflow_dont,/* complain_on_overflow */
1659 bfd_elf_generic_reloc, /* special_function */
1660 "R_ARM_RBASE", /* name */
1661 FALSE, /* partial_inplace */
1664 FALSE) /* pcrel_offset */
1667 static reloc_howto_type *
1668 elf32_arm_howto_from_type (unsigned int r_type)
1670 if (r_type < NUM_ELEM (elf32_arm_howto_table_1))
1671 return &elf32_arm_howto_table_1[r_type];
1673 if (r_type >= R_ARM_RREL32
1674 && r_type < R_ARM_RREL32 + NUM_ELEM (elf32_arm_howto_table_2))
1675 return &elf32_arm_howto_table_2[r_type - R_ARM_RREL32];
1681 elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
1682 Elf_Internal_Rela * elf_reloc)
1684 unsigned int r_type;
1686 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1687 bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
1690 struct elf32_arm_reloc_map
1692 bfd_reloc_code_real_type bfd_reloc_val;
1693 unsigned char elf_reloc_val;
1696 /* All entries in this list must also be present in elf32_arm_howto_table. */
1697 static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
1699 {BFD_RELOC_NONE, R_ARM_NONE},
1700 {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
1701 {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL},
1702 {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24},
1703 {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
1704 {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
1705 {BFD_RELOC_32, R_ARM_ABS32},
1706 {BFD_RELOC_32_PCREL, R_ARM_REL32},
1707 {BFD_RELOC_8, R_ARM_ABS8},
1708 {BFD_RELOC_16, R_ARM_ABS16},
1709 {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
1710 {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
1711 {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24},
1712 {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11},
1714 {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19},
1715 {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8},
1716 {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6},
1717 {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
1718 {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
1719 {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
1720 {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32},
1721 {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
1722 {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
1723 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1724 {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1},
1725 {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32},
1726 {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32},
1727 {BFD_RELOC_ARM_PREL31, R_ARM_PREL31},
1728 {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2},
1729 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1730 {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32},
1731 {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32},
1732 {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32},
1733 {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32},
1734 {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32},
1735 {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32},
1736 {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32},
1737 {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32},
1738 {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT},
1739 {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY},
1740 {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC},
1741 {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS},
1742 {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC},
1743 {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL},
1744 {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC},
1745 {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS},
1746 {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC},
1747 {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL},
1748 {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC},
1749 {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0},
1750 {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC},
1751 {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1},
1752 {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2},
1753 {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0},
1754 {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1},
1755 {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2},
1756 {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0},
1757 {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1},
1758 {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2},
1759 {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0},
1760 {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1},
1761 {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2},
1762 {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC},
1763 {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0},
1764 {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC},
1765 {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1},
1766 {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2},
1767 {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0},
1768 {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1},
1769 {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2},
1770 {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0},
1771 {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1},
1772 {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2},
1773 {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0},
1774 {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1},
1775 {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2}
1778 static reloc_howto_type *
1779 elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1780 bfd_reloc_code_real_type code)
1783 for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
1784 if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
1785 return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
1790 /* Support for core dump NOTE sections */
1792 elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1797 switch (note->descsz)
1802 case 148: /* Linux/ARM 32-bit*/
1804 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1807 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1816 /* Make a ".reg/999" section. */
1817 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1818 size, note->descpos + offset);
1822 elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1824 switch (note->descsz)
1829 case 124: /* Linux/ARM elf_prpsinfo */
1830 elf_tdata (abfd)->core_program
1831 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1832 elf_tdata (abfd)->core_command
1833 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1836 /* Note that for some reason, a spurious space is tacked
1837 onto the end of the args in some (at least one anyway)
1838 implementations, so strip it off if it exists. */
1841 char *command = elf_tdata (abfd)->core_command;
1842 int n = strlen (command);
1844 if (0 < n && command[n - 1] == ' ')
1845 command[n - 1] = '\0';
1851 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1852 #define TARGET_LITTLE_NAME "elf32-littlearm"
1853 #define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1854 #define TARGET_BIG_NAME "elf32-bigarm"
1856 #define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1857 #define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1859 typedef unsigned long int insn32;
1860 typedef unsigned short int insn16;
1862 /* In lieu of proper flags, assume all EABIv4 or later objects are
1864 #define INTERWORK_FLAG(abfd) \
1865 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
1866 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
1868 /* The linker script knows the section names for placement.
1869 The entry_names are used to do simple name mangling on the stubs.
1870 Given a function name, and its type, the stub can be found. The
1871 name can be changed. The only requirement is the %s be present. */
1872 #define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1873 #define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1875 #define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1876 #define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1878 /* The name of the dynamic interpreter. This is put in the .interp
1880 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1882 #ifdef FOUR_WORD_PLT
1884 /* The first entry in a procedure linkage table looks like
1885 this. It is set up so that any shared library function that is
1886 called before the relocation has been set up calls the dynamic
1888 static const bfd_vma elf32_arm_plt0_entry [] =
1890 0xe52de004, /* str lr, [sp, #-4]! */
1891 0xe59fe010, /* ldr lr, [pc, #16] */
1892 0xe08fe00e, /* add lr, pc, lr */
1893 0xe5bef008, /* ldr pc, [lr, #8]! */
1896 /* Subsequent entries in a procedure linkage table look like
1898 static const bfd_vma elf32_arm_plt_entry [] =
1900 0xe28fc600, /* add ip, pc, #NN */
1901 0xe28cca00, /* add ip, ip, #NN */
1902 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1903 0x00000000, /* unused */
1908 /* The first entry in a procedure linkage table looks like
1909 this. It is set up so that any shared library function that is
1910 called before the relocation has been set up calls the dynamic
1912 static const bfd_vma elf32_arm_plt0_entry [] =
1914 0xe52de004, /* str lr, [sp, #-4]! */
1915 0xe59fe004, /* ldr lr, [pc, #4] */
1916 0xe08fe00e, /* add lr, pc, lr */
1917 0xe5bef008, /* ldr pc, [lr, #8]! */
1918 0x00000000, /* &GOT[0] - . */
1921 /* Subsequent entries in a procedure linkage table look like
1923 static const bfd_vma elf32_arm_plt_entry [] =
1925 0xe28fc600, /* add ip, pc, #0xNN00000 */
1926 0xe28cca00, /* add ip, ip, #0xNN000 */
1927 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1932 /* The format of the first entry in the procedure linkage table
1933 for a VxWorks executable. */
1934 static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] =
1936 0xe52dc008, /* str ip,[sp,#-8]! */
1937 0xe59fc000, /* ldr ip,[pc] */
1938 0xe59cf008, /* ldr pc,[ip,#8] */
1939 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1942 /* The format of subsequent entries in a VxWorks executable. */
1943 static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] =
1945 0xe59fc000, /* ldr ip,[pc] */
1946 0xe59cf000, /* ldr pc,[ip] */
1947 0x00000000, /* .long @got */
1948 0xe59fc000, /* ldr ip,[pc] */
1949 0xea000000, /* b _PLT */
1950 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1953 /* The format of entries in a VxWorks shared library. */
1954 static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] =
1956 0xe59fc000, /* ldr ip,[pc] */
1957 0xe79cf009, /* ldr pc,[ip,r9] */
1958 0x00000000, /* .long @got */
1959 0xe59fc000, /* ldr ip,[pc] */
1960 0xe599f008, /* ldr pc,[r9,#8] */
1961 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1964 /* An initial stub used if the PLT entry is referenced from Thumb code. */
1965 #define PLT_THUMB_STUB_SIZE 4
1966 static const bfd_vma elf32_arm_plt_thumb_stub [] =
1972 /* The entries in a PLT when using a DLL-based target with multiple
1974 static const bfd_vma elf32_arm_symbian_plt_entry [] =
1976 0xe51ff004, /* ldr pc, [pc, #-4] */
1977 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
1980 /* Used to build a map of a section. This is required for mixed-endian
1983 typedef struct elf32_elf_section_map
1988 elf32_arm_section_map;
1990 typedef struct _arm_elf_section_data
1992 struct bfd_elf_section_data elf;
1993 unsigned int mapcount;
1994 elf32_arm_section_map *map;
1996 _arm_elf_section_data;
1998 #define elf32_arm_section_data(sec) \
1999 ((_arm_elf_section_data *) elf_section_data (sec))
2001 /* The size of the thread control block. */
2004 #define NUM_KNOWN_ATTRIBUTES 32
2006 typedef struct aeabi_attribute
2013 typedef struct aeabi_attribute_list
2015 struct aeabi_attribute_list *next;
2017 aeabi_attribute attr;
2018 } aeabi_attribute_list;
2020 struct elf32_arm_obj_tdata
2022 struct elf_obj_tdata root;
2024 /* tls_type for each local got entry. */
2025 char *local_got_tls_type;
2027 aeabi_attribute known_eabi_attributes[NUM_KNOWN_ATTRIBUTES];
2028 aeabi_attribute_list *other_eabi_attributes;
2031 #define elf32_arm_tdata(abfd) \
2032 ((struct elf32_arm_obj_tdata *) (abfd)->tdata.any)
2034 #define elf32_arm_local_got_tls_type(abfd) \
2035 (elf32_arm_tdata (abfd)->local_got_tls_type)
2038 elf32_arm_mkobject (bfd *abfd)
2040 if (abfd->tdata.any == NULL)
2042 bfd_size_type amt = sizeof (struct elf32_arm_obj_tdata);
2043 abfd->tdata.any = bfd_zalloc (abfd, amt);
2044 if (abfd->tdata.any == NULL)
2047 return bfd_elf_mkobject (abfd);
2050 /* The ARM linker needs to keep track of the number of relocs that it
2051 decides to copy in check_relocs for each symbol. This is so that
2052 it can discard PC relative relocs if it doesn't need them when
2053 linking with -Bsymbolic. We store the information in a field
2054 extending the regular ELF linker hash table. */
2056 /* This structure keeps track of the number of relocs we have copied
2057 for a given symbol. */
2058 struct elf32_arm_relocs_copied
2061 struct elf32_arm_relocs_copied * next;
2062 /* A section in dynobj. */
2064 /* Number of relocs copied in this section. */
2065 bfd_size_type count;
2066 /* Number of PC-relative relocs copied in this section. */
2067 bfd_size_type pc_count;
2070 #define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2072 /* Arm ELF linker hash entry. */
2073 struct elf32_arm_link_hash_entry
2075 struct elf_link_hash_entry root;
2077 /* Number of PC relative relocs copied for this symbol. */
2078 struct elf32_arm_relocs_copied * relocs_copied;
2080 /* We reference count Thumb references to a PLT entry separately,
2081 so that we can emit the Thumb trampoline only if needed. */
2082 bfd_signed_vma plt_thumb_refcount;
2084 /* Since PLT entries have variable size if the Thumb prologue is
2085 used, we need to record the index into .got.plt instead of
2086 recomputing it from the PLT offset. */
2087 bfd_signed_vma plt_got_offset;
2089 #define GOT_UNKNOWN 0
2090 #define GOT_NORMAL 1
2091 #define GOT_TLS_GD 2
2092 #define GOT_TLS_IE 4
2093 unsigned char tls_type;
2095 /* The symbol marking the real symbol location for exported thumb
2096 symbols with Arm stubs. */
2097 struct elf_link_hash_entry *export_glue;
2100 /* Traverse an arm ELF linker hash table. */
2101 #define elf32_arm_link_hash_traverse(table, func, info) \
2102 (elf_link_hash_traverse \
2104 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
2107 /* Get the ARM elf linker hash table from a link_info structure. */
2108 #define elf32_arm_hash_table(info) \
2109 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2111 /* ARM ELF linker hash table. */
2112 struct elf32_arm_link_hash_table
2114 /* The main hash table. */
2115 struct elf_link_hash_table root;
2117 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2118 bfd_size_type thumb_glue_size;
2120 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2121 bfd_size_type arm_glue_size;
2123 /* An arbitrary input BFD chosen to hold the glue sections. */
2124 bfd * bfd_of_glue_owner;
2126 /* Nonzero to output a BE8 image. */
2129 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2130 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2133 /* The relocation to use for R_ARM_TARGET2 relocations. */
2136 /* Nonzero to fix BX instructions for ARMv4 targets. */
2139 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2142 /* The number of bytes in the initial entry in the PLT. */
2143 bfd_size_type plt_header_size;
2145 /* The number of bytes in the subsequent PLT etries. */
2146 bfd_size_type plt_entry_size;
2148 /* True if the target system is VxWorks. */
2151 /* True if the target system is Symbian OS. */
2154 /* True if the target uses REL relocations. */
2157 /* Short-cuts to get to dynamic linker sections. */
2166 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2169 /* Data for R_ARM_TLS_LDM32 relocations. */
2171 bfd_signed_vma refcount;
2175 /* Small local sym to section mapping cache. */
2176 struct sym_sec_cache sym_sec;
2178 /* For convenience in allocate_dynrelocs. */
2182 /* Create an entry in an ARM ELF linker hash table. */
2184 static struct bfd_hash_entry *
2185 elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
2186 struct bfd_hash_table * table,
2187 const char * string)
2189 struct elf32_arm_link_hash_entry * ret =
2190 (struct elf32_arm_link_hash_entry *) entry;
2192 /* Allocate the structure if it has not already been allocated by a
2194 if (ret == (struct elf32_arm_link_hash_entry *) NULL)
2195 ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
2197 return (struct bfd_hash_entry *) ret;
2199 /* Call the allocation method of the superclass. */
2200 ret = ((struct elf32_arm_link_hash_entry *)
2201 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2205 ret->relocs_copied = NULL;
2206 ret->tls_type = GOT_UNKNOWN;
2207 ret->plt_thumb_refcount = 0;
2208 ret->plt_got_offset = -1;
2209 ret->export_glue = NULL;
2212 return (struct bfd_hash_entry *) ret;
2215 /* Return true if NAME is the name of the relocation section associated
2219 reloc_section_p (struct elf32_arm_link_hash_table *htab,
2220 const char *name, asection *s)
2223 return CONST_STRNEQ (name, ".rel") && strcmp (s->name, name + 4) == 0;
2225 return CONST_STRNEQ (name, ".rela") && strcmp (s->name, name + 5) == 0;
2228 /* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
2229 shortcuts to them in our hash table. */
2232 create_got_section (bfd *dynobj, struct bfd_link_info *info)
2234 struct elf32_arm_link_hash_table *htab;
2236 htab = elf32_arm_hash_table (info);
2237 /* BPABI objects never have a GOT, or associated sections. */
2238 if (htab->symbian_p)
2241 if (! _bfd_elf_create_got_section (dynobj, info))
2244 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2245 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2246 if (!htab->sgot || !htab->sgotplt)
2249 htab->srelgot = bfd_make_section_with_flags (dynobj,
2250 RELOC_SECTION (htab, ".got"),
2251 (SEC_ALLOC | SEC_LOAD
2254 | SEC_LINKER_CREATED
2256 if (htab->srelgot == NULL
2257 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
2262 /* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2263 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
2267 elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
2269 struct elf32_arm_link_hash_table *htab;
2271 htab = elf32_arm_hash_table (info);
2272 if (!htab->sgot && !create_got_section (dynobj, info))
2275 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2278 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
2279 htab->srelplt = bfd_get_section_by_name (dynobj,
2280 RELOC_SECTION (htab, ".plt"));
2281 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2283 htab->srelbss = bfd_get_section_by_name (dynobj,
2284 RELOC_SECTION (htab, ".bss"));
2286 if (htab->vxworks_p)
2288 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
2293 htab->plt_header_size = 0;
2294 htab->plt_entry_size
2295 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry);
2299 htab->plt_header_size
2300 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry);
2301 htab->plt_entry_size
2302 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry);
2309 || (!info->shared && !htab->srelbss))
2315 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2318 elf32_arm_copy_indirect_symbol (struct bfd_link_info *info,
2319 struct elf_link_hash_entry *dir,
2320 struct elf_link_hash_entry *ind)
2322 struct elf32_arm_link_hash_entry *edir, *eind;
2324 edir = (struct elf32_arm_link_hash_entry *) dir;
2325 eind = (struct elf32_arm_link_hash_entry *) ind;
2327 if (eind->relocs_copied != NULL)
2329 if (edir->relocs_copied != NULL)
2331 struct elf32_arm_relocs_copied **pp;
2332 struct elf32_arm_relocs_copied *p;
2334 /* Add reloc counts against the indirect sym to the direct sym
2335 list. Merge any entries against the same section. */
2336 for (pp = &eind->relocs_copied; (p = *pp) != NULL; )
2338 struct elf32_arm_relocs_copied *q;
2340 for (q = edir->relocs_copied; q != NULL; q = q->next)
2341 if (q->section == p->section)
2343 q->pc_count += p->pc_count;
2344 q->count += p->count;
2351 *pp = edir->relocs_copied;
2354 edir->relocs_copied = eind->relocs_copied;
2355 eind->relocs_copied = NULL;
2358 if (ind->root.type == bfd_link_hash_indirect)
2360 /* Copy over PLT info. */
2361 edir->plt_thumb_refcount += eind->plt_thumb_refcount;
2362 eind->plt_thumb_refcount = 0;
2364 if (dir->got.refcount <= 0)
2366 edir->tls_type = eind->tls_type;
2367 eind->tls_type = GOT_UNKNOWN;
2371 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2374 /* Create an ARM elf linker hash table. */
2376 static struct bfd_link_hash_table *
2377 elf32_arm_link_hash_table_create (bfd *abfd)
2379 struct elf32_arm_link_hash_table *ret;
2380 bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
2382 ret = bfd_malloc (amt);
2386 if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
2387 elf32_arm_link_hash_newfunc,
2388 sizeof (struct elf32_arm_link_hash_entry)))
2395 ret->sgotplt = NULL;
2396 ret->srelgot = NULL;
2398 ret->srelplt = NULL;
2399 ret->sdynbss = NULL;
2400 ret->srelbss = NULL;
2401 ret->srelplt2 = NULL;
2402 ret->thumb_glue_size = 0;
2403 ret->arm_glue_size = 0;
2404 ret->bfd_of_glue_owner = NULL;
2405 ret->byteswap_code = 0;
2406 ret->target1_is_rel = 0;
2407 ret->target2_reloc = R_ARM_NONE;
2408 #ifdef FOUR_WORD_PLT
2409 ret->plt_header_size = 16;
2410 ret->plt_entry_size = 16;
2412 ret->plt_header_size = 20;
2413 ret->plt_entry_size = 12;
2420 ret->sym_sec.abfd = NULL;
2422 ret->tls_ldm_got.refcount = 0;
2424 return &ret->root.root;
2427 /* Locate the Thumb encoded calling stub for NAME. */
2429 static struct elf_link_hash_entry *
2430 find_thumb_glue (struct bfd_link_info *link_info,
2435 struct elf_link_hash_entry *hash;
2436 struct elf32_arm_link_hash_table *hash_table;
2438 /* We need a pointer to the armelf specific hash table. */
2439 hash_table = elf32_arm_hash_table (link_info);
2441 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2442 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
2444 BFD_ASSERT (tmp_name);
2446 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
2448 hash = elf_link_hash_lookup
2449 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
2452 /* xgettext:c-format */
2453 (*_bfd_error_handler) (_("%B: unable to find THUMB glue '%s' for `%s'"),
2454 input_bfd, tmp_name, name);
2461 /* Locate the ARM encoded calling stub for NAME. */
2463 static struct elf_link_hash_entry *
2464 find_arm_glue (struct bfd_link_info *link_info,
2469 struct elf_link_hash_entry *myh;
2470 struct elf32_arm_link_hash_table *hash_table;
2472 /* We need a pointer to the elfarm specific hash table. */
2473 hash_table = elf32_arm_hash_table (link_info);
2475 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2476 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
2478 BFD_ASSERT (tmp_name);
2480 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
2482 myh = elf_link_hash_lookup
2483 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
2486 /* xgettext:c-format */
2487 (*_bfd_error_handler) (_("%B: unable to find ARM glue '%s' for `%s'"),
2488 input_bfd, tmp_name, name);
2495 /* ARM->Thumb glue (static images):
2499 ldr r12, __func_addr
2502 .word func @ behave as if you saw a ARM_32 reloc.
2504 (relocatable images)
2507 ldr r12, __func_offset
2514 #define ARM2THUMB_STATIC_GLUE_SIZE 12
2515 static const insn32 a2t1_ldr_insn = 0xe59fc000;
2516 static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
2517 static const insn32 a2t3_func_addr_insn = 0x00000001;
2519 #define ARM2THUMB_PIC_GLUE_SIZE 16
2520 static const insn32 a2t1p_ldr_insn = 0xe59fc004;
2521 static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
2522 static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
2524 /* Thumb->ARM: Thumb->(non-interworking aware) ARM
2528 __func_from_thumb: __func_from_thumb:
2530 nop ldr r6, __func_addr
2532 __func_change_to_arm: bx r6
2534 __func_back_to_thumb:
2540 #define THUMB2ARM_GLUE_SIZE 8
2541 static const insn16 t2a1_bx_pc_insn = 0x4778;
2542 static const insn16 t2a2_noop_insn = 0x46c0;
2543 static const insn32 t2a3_b_insn = 0xea000000;
2545 #ifndef ELFARM_NABI_C_INCLUDED
2547 bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
2551 struct elf32_arm_link_hash_table * globals;
2553 globals = elf32_arm_hash_table (info);
2555 BFD_ASSERT (globals != NULL);
2557 if (globals->arm_glue_size != 0)
2559 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2561 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
2562 ARM2THUMB_GLUE_SECTION_NAME);
2564 BFD_ASSERT (s != NULL);
2566 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size);
2568 s->size = globals->arm_glue_size;
2572 if (globals->thumb_glue_size != 0)
2574 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2576 s = bfd_get_section_by_name
2577 (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
2579 BFD_ASSERT (s != NULL);
2581 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size);
2583 s->size = globals->thumb_glue_size;
2590 /* Allocate space and symbols for calling a Thumb function from Arm mode.
2591 returns the symbol identifying teh stub. */
2592 static struct elf_link_hash_entry *
2593 record_arm_to_thumb_glue (struct bfd_link_info * link_info,
2594 struct elf_link_hash_entry * h)
2596 const char * name = h->root.root.string;
2599 struct elf_link_hash_entry * myh;
2600 struct bfd_link_hash_entry * bh;
2601 struct elf32_arm_link_hash_table * globals;
2604 globals = elf32_arm_hash_table (link_info);
2606 BFD_ASSERT (globals != NULL);
2607 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2609 s = bfd_get_section_by_name
2610 (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
2612 BFD_ASSERT (s != NULL);
2614 tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
2616 BFD_ASSERT (tmp_name);
2618 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
2620 myh = elf_link_hash_lookup
2621 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
2625 /* We've already seen this guy. */
2630 /* The only trick here is using hash_table->arm_glue_size as the value.
2631 Even though the section isn't allocated yet, this is where we will be
2634 val = globals->arm_glue_size + 1;
2635 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
2636 tmp_name, BSF_GLOBAL, s, val,
2637 NULL, TRUE, FALSE, &bh);
2639 myh = (struct elf_link_hash_entry *) bh;
2640 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
2641 myh->forced_local = 1;
2645 if ((link_info->shared || globals->root.is_relocatable_executable))
2646 globals->arm_glue_size += ARM2THUMB_PIC_GLUE_SIZE;
2648 globals->arm_glue_size += ARM2THUMB_STATIC_GLUE_SIZE;
2654 record_thumb_to_arm_glue (struct bfd_link_info *link_info,
2655 struct elf_link_hash_entry *h)
2657 const char *name = h->root.root.string;
2660 struct elf_link_hash_entry *myh;
2661 struct bfd_link_hash_entry *bh;
2662 struct elf32_arm_link_hash_table *hash_table;
2665 hash_table = elf32_arm_hash_table (link_info);
2667 BFD_ASSERT (hash_table != NULL);
2668 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
2670 s = bfd_get_section_by_name
2671 (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
2673 BFD_ASSERT (s != NULL);
2675 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2676 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
2678 BFD_ASSERT (tmp_name);
2680 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
2682 myh = elf_link_hash_lookup
2683 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
2687 /* We've already seen this guy. */
2693 val = hash_table->thumb_glue_size + 1;
2694 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2695 tmp_name, BSF_GLOBAL, s, val,
2696 NULL, TRUE, FALSE, &bh);
2698 /* If we mark it 'Thumb', the disassembler will do a better job. */
2699 myh = (struct elf_link_hash_entry *) bh;
2700 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
2701 myh->forced_local = 1;
2705 #define CHANGE_TO_ARM "__%s_change_to_arm"
2706 #define BACK_FROM_ARM "__%s_back_from_arm"
2708 /* Allocate another symbol to mark where we switch to Arm mode. */
2709 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2710 + strlen (CHANGE_TO_ARM) + 1);
2712 BFD_ASSERT (tmp_name);
2714 sprintf (tmp_name, CHANGE_TO_ARM, name);
2717 val = hash_table->thumb_glue_size + 4,
2718 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2719 tmp_name, BSF_LOCAL, s, val,
2720 NULL, TRUE, FALSE, &bh);
2724 hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
2729 /* Add the glue sections to ABFD. This function is called from the
2730 linker scripts in ld/emultempl/{armelf}.em. */
2733 bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
2734 struct bfd_link_info *info)
2739 /* If we are only performing a partial
2740 link do not bother adding the glue. */
2741 if (info->relocatable)
2744 sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME);
2748 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
2749 will prevent elf_link_input_bfd() from processing the contents
2751 flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY;
2753 sec = bfd_make_section_with_flags (abfd,
2754 ARM2THUMB_GLUE_SECTION_NAME,
2758 || !bfd_set_section_alignment (abfd, sec, 2))
2761 /* Set the gc mark to prevent the section from being removed by garbage
2762 collection, despite the fact that no relocs refer to this section. */
2766 sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME);
2770 flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2771 | SEC_CODE | SEC_READONLY;
2773 sec = bfd_make_section_with_flags (abfd,
2774 THUMB2ARM_GLUE_SECTION_NAME,
2778 || !bfd_set_section_alignment (abfd, sec, 2))
2787 /* Select a BFD to be used to hold the sections used by the glue code.
2788 This function is called from the linker scripts in ld/emultempl/
2792 bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
2794 struct elf32_arm_link_hash_table *globals;
2796 /* If we are only performing a partial link
2797 do not bother getting a bfd to hold the glue. */
2798 if (info->relocatable)
2801 /* Make sure we don't attach the glue sections to a dynamic object. */
2802 BFD_ASSERT (!(abfd->flags & DYNAMIC));
2804 globals = elf32_arm_hash_table (info);
2806 BFD_ASSERT (globals != NULL);
2808 if (globals->bfd_of_glue_owner != NULL)
2811 /* Save the bfd for later use. */
2812 globals->bfd_of_glue_owner = abfd;
2817 static void check_use_blx(struct elf32_arm_link_hash_table *globals)
2819 if (elf32_arm_get_eabi_attr_int (globals->obfd, Tag_CPU_arch) > 2)
2820 globals->use_blx = 1;
2824 bfd_elf32_arm_process_before_allocation (bfd *abfd,
2825 struct bfd_link_info *link_info,
2828 Elf_Internal_Shdr *symtab_hdr;
2829 Elf_Internal_Rela *internal_relocs = NULL;
2830 Elf_Internal_Rela *irel, *irelend;
2831 bfd_byte *contents = NULL;
2834 struct elf32_arm_link_hash_table *globals;
2836 /* If we are only performing a partial link do not bother
2837 to construct any glue. */
2838 if (link_info->relocatable)
2841 /* Here we have a bfd that is to be included on the link. We have a hook
2842 to do reloc rummaging, before section sizes are nailed down. */
2843 globals = elf32_arm_hash_table (link_info);
2844 check_use_blx (globals);
2846 BFD_ASSERT (globals != NULL);
2847 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2849 if (byteswap_code && !bfd_big_endian (abfd))
2851 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
2855 globals->byteswap_code = byteswap_code;
2857 /* Rummage around all the relocs and map the glue vectors. */
2858 sec = abfd->sections;
2863 for (; sec != NULL; sec = sec->next)
2865 if (sec->reloc_count == 0)
2868 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2870 /* Load the relocs. */
2872 = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL,
2873 (Elf_Internal_Rela *) NULL, FALSE);
2875 if (internal_relocs == NULL)
2878 irelend = internal_relocs + sec->reloc_count;
2879 for (irel = internal_relocs; irel < irelend; irel++)
2882 unsigned long r_index;
2884 struct elf_link_hash_entry *h;
2886 r_type = ELF32_R_TYPE (irel->r_info);
2887 r_index = ELF32_R_SYM (irel->r_info);
2889 /* These are the only relocation types we care about. */
2890 if ( r_type != R_ARM_PC24
2891 && r_type != R_ARM_PLT32
2892 && r_type != R_ARM_CALL
2893 && r_type != R_ARM_JUMP24
2894 && r_type != R_ARM_THM_CALL)
2897 /* Get the section contents if we haven't done so already. */
2898 if (contents == NULL)
2900 /* Get cached copy if it exists. */
2901 if (elf_section_data (sec)->this_hdr.contents != NULL)
2902 contents = elf_section_data (sec)->this_hdr.contents;
2905 /* Go get them off disk. */
2906 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
2911 /* If the relocation is not against a symbol it cannot concern us. */
2914 /* We don't care about local symbols. */
2915 if (r_index < symtab_hdr->sh_info)
2918 /* This is an external symbol. */
2919 r_index -= symtab_hdr->sh_info;
2920 h = (struct elf_link_hash_entry *)
2921 elf_sym_hashes (abfd)[r_index];
2923 /* If the relocation is against a static symbol it must be within
2924 the current section and so cannot be a cross ARM/Thumb relocation. */
2928 /* If the call will go through a PLT entry then we do not need
2930 if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1)
2939 /* This one is a call from arm code. We need to look up
2940 the target of the call. If it is a thumb target, we
2942 if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC
2943 && !(r_type == R_ARM_CALL && globals->use_blx))
2944 record_arm_to_thumb_glue (link_info, h);
2947 case R_ARM_THM_CALL:
2948 /* This one is a call from thumb code. We look
2949 up the target of the call. If it is not a thumb
2950 target, we insert glue. */
2951 if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC && !globals->use_blx)
2952 record_thumb_to_arm_glue (link_info, h);
2960 if (contents != NULL
2961 && elf_section_data (sec)->this_hdr.contents != contents)
2965 if (internal_relocs != NULL
2966 && elf_section_data (sec)->relocs != internal_relocs)
2967 free (internal_relocs);
2968 internal_relocs = NULL;
2974 if (contents != NULL
2975 && elf_section_data (sec)->this_hdr.contents != contents)
2977 if (internal_relocs != NULL
2978 && elf_section_data (sec)->relocs != internal_relocs)
2979 free (internal_relocs);
2986 /* Set target relocation values needed during linking. */
2989 bfd_elf32_arm_set_target_relocs (struct bfd_link_info *link_info,
2991 char * target2_type,
2995 struct elf32_arm_link_hash_table *globals;
2997 globals = elf32_arm_hash_table (link_info);
2999 globals->target1_is_rel = target1_is_rel;
3000 if (strcmp (target2_type, "rel") == 0)
3001 globals->target2_reloc = R_ARM_REL32;
3002 else if (strcmp (target2_type, "abs") == 0)
3003 globals->target2_reloc = R_ARM_ABS32;
3004 else if (strcmp (target2_type, "got-rel") == 0)
3005 globals->target2_reloc = R_ARM_GOT_PREL;
3008 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
3011 globals->fix_v4bx = fix_v4bx;
3012 globals->use_blx |= use_blx;
3015 /* The thumb form of a long branch is a bit finicky, because the offset
3016 encoding is split over two fields, each in it's own instruction. They
3017 can occur in any order. So given a thumb form of long branch, and an
3018 offset, insert the offset into the thumb branch and return finished
3021 It takes two thumb instructions to encode the target address. Each has
3022 11 bits to invest. The upper 11 bits are stored in one (identified by
3023 H-0.. see below), the lower 11 bits are stored in the other (identified
3026 Combine together and shifted left by 1 (it's a half word address) and
3030 H-0, upper address-0 = 000
3032 H-1, lower address-0 = 800
3034 They can be ordered either way, but the arm tools I've seen always put
3037 XXX: Actually the order does matter. The second instruction (H-1)
3038 moves the computed address into the PC, so it must be the second one
3039 in the sequence. The problem, however is that whilst little endian code
3040 stores the instructions in HI then LOW order, big endian code does the
3043 #define LOW_HI_ORDER 0xF800F000
3044 #define HI_LOW_ORDER 0xF000F800
3047 insert_thumb_branch (insn32 br_insn, int rel_off)
3049 unsigned int low_bits;
3050 unsigned int high_bits;
3052 BFD_ASSERT ((rel_off & 1) != 1);
3054 rel_off >>= 1; /* Half word aligned address. */
3055 low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */
3056 high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */
3058 if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER)
3059 br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits;
3060 else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER)
3061 br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits;
3064 abort (); /* Error - not a valid branch instruction form. */
3070 /* Store an Arm insn into an output section not processed by
3071 elf32_arm_write_section. */
3074 put_arm_insn (struct elf32_arm_link_hash_table *htab,
3075 bfd * output_bfd, bfd_vma val, void * ptr)
3077 if (htab->byteswap_code != bfd_little_endian (output_bfd))
3078 bfd_putl32 (val, ptr);
3080 bfd_putb32 (val, ptr);
3084 /* Store a 16-bit Thumb insn into an output section not processed by
3085 elf32_arm_write_section. */
3088 put_thumb_insn (struct elf32_arm_link_hash_table *htab,
3089 bfd * output_bfd, bfd_vma val, void * ptr)
3091 if (htab->byteswap_code != bfd_little_endian (output_bfd))
3092 bfd_putl16 (val, ptr);
3094 bfd_putb16 (val, ptr);
3098 /* Thumb code calling an ARM function. */
3101 elf32_thumb_to_arm_stub (struct bfd_link_info * info,
3105 asection * input_section,
3106 bfd_byte * hit_data,
3109 bfd_signed_vma addend,
3114 unsigned long int tmp;
3115 long int ret_offset;
3116 struct elf_link_hash_entry * myh;
3117 struct elf32_arm_link_hash_table * globals;
3119 myh = find_thumb_glue (info, name, input_bfd);
3123 globals = elf32_arm_hash_table (info);
3125 BFD_ASSERT (globals != NULL);
3126 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
3128 my_offset = myh->root.u.def.value;
3130 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
3131 THUMB2ARM_GLUE_SECTION_NAME);
3133 BFD_ASSERT (s != NULL);
3134 BFD_ASSERT (s->contents != NULL);
3135 BFD_ASSERT (s->output_section != NULL);
3137 if ((my_offset & 0x01) == 0x01)
3140 && sym_sec->owner != NULL
3141 && !INTERWORK_FLAG (sym_sec->owner))
3143 (*_bfd_error_handler)
3144 (_("%B(%s): warning: interworking not enabled.\n"
3145 " first occurrence: %B: thumb call to arm"),
3146 sym_sec->owner, input_bfd, name);
3152 myh->root.u.def.value = my_offset;
3154 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn,
3155 s->contents + my_offset);
3157 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn,
3158 s->contents + my_offset + 2);
3161 /* Address of destination of the stub. */
3162 ((bfd_signed_vma) val)
3164 /* Offset from the start of the current section
3165 to the start of the stubs. */
3167 /* Offset of the start of this stub from the start of the stubs. */
3169 /* Address of the start of the current section. */
3170 + s->output_section->vma)
3171 /* The branch instruction is 4 bytes into the stub. */
3173 /* ARM branches work from the pc of the instruction + 8. */
3176 put_arm_insn (globals, output_bfd,
3177 (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
3178 s->contents + my_offset + 4);
3181 BFD_ASSERT (my_offset <= globals->thumb_glue_size);
3183 /* Now go back and fix up the original BL insn to point to here. */
3185 /* Address of where the stub is located. */
3186 (s->output_section->vma + s->output_offset + my_offset)
3187 /* Address of where the BL is located. */
3188 - (input_section->output_section->vma + input_section->output_offset
3190 /* Addend in the relocation. */
3192 /* Biassing for PC-relative addressing. */
3195 tmp = bfd_get_32 (input_bfd, hit_data
3196 - input_section->vma);
3198 bfd_put_32 (output_bfd,
3199 (bfd_vma) insert_thumb_branch (tmp, ret_offset),
3200 hit_data - input_section->vma);
3205 /* Populate an Arm to Thumb stub. Returns the stub symbol. */
3207 static struct elf_link_hash_entry *
3208 elf32_arm_create_thumb_stub (struct bfd_link_info * info,
3217 long int ret_offset;
3218 struct elf_link_hash_entry * myh;
3219 struct elf32_arm_link_hash_table * globals;
3221 myh = find_arm_glue (info, name, input_bfd);
3225 globals = elf32_arm_hash_table (info);
3227 BFD_ASSERT (globals != NULL);
3228 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
3230 my_offset = myh->root.u.def.value;
3232 if ((my_offset & 0x01) == 0x01)
3235 && sym_sec->owner != NULL
3236 && !INTERWORK_FLAG (sym_sec->owner))
3238 (*_bfd_error_handler)
3239 (_("%B(%s): warning: interworking not enabled.\n"
3240 " first occurrence: %B: arm call to thumb"),
3241 sym_sec->owner, input_bfd, name);
3245 myh->root.u.def.value = my_offset;
3247 if ((info->shared || globals->root.is_relocatable_executable))
3249 /* For relocatable objects we can't use absolute addresses,
3250 so construct the address from a relative offset. */
3251 /* TODO: If the offset is small it's probably worth
3252 constructing the address with adds. */
3253 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn,
3254 s->contents + my_offset);
3255 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn,
3256 s->contents + my_offset + 4);
3257 put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
3258 s->contents + my_offset + 8);
3259 /* Adjust the offset by 4 for the position of the add,
3260 and 8 for the pipeline offset. */
3261 ret_offset = (val - (s->output_offset
3262 + s->output_section->vma
3265 bfd_put_32 (output_bfd, ret_offset,
3266 s->contents + my_offset + 12);
3270 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn,
3271 s->contents + my_offset);
3273 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn,
3274 s->contents + my_offset + 4);
3276 /* It's a thumb address. Add the low order bit. */
3277 bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
3278 s->contents + my_offset + 8);
3282 BFD_ASSERT (my_offset <= globals->arm_glue_size);
3287 /* Arm code calling a Thumb function. */
3290 elf32_arm_to_thumb_stub (struct bfd_link_info * info,
3294 asection * input_section,
3295 bfd_byte * hit_data,
3298 bfd_signed_vma addend,
3301 unsigned long int tmp;
3304 long int ret_offset;
3305 struct elf_link_hash_entry * myh;
3306 struct elf32_arm_link_hash_table * globals;
3308 globals = elf32_arm_hash_table (info);
3310 BFD_ASSERT (globals != NULL);
3311 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
3313 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
3314 ARM2THUMB_GLUE_SECTION_NAME);
3315 BFD_ASSERT (s != NULL);
3316 BFD_ASSERT (s->contents != NULL);
3317 BFD_ASSERT (s->output_section != NULL);
3319 myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd,
3324 my_offset = myh->root.u.def.value;
3325 tmp = bfd_get_32 (input_bfd, hit_data);
3326 tmp = tmp & 0xFF000000;
3328 /* Somehow these are both 4 too far, so subtract 8. */
3329 ret_offset = (s->output_offset
3331 + s->output_section->vma
3332 - (input_section->output_offset
3333 + input_section->output_section->vma
3337 tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
3339 bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
3344 /* Populate Arm stub for an exported Thumb function. */
3347 elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf)
3349 struct bfd_link_info * info = (struct bfd_link_info *) inf;
3351 struct elf_link_hash_entry * myh;
3352 struct elf32_arm_link_hash_entry *eh;
3353 struct elf32_arm_link_hash_table * globals;
3357 eh = elf32_arm_hash_entry(h);
3358 /* Allocate stubs for exported Thumb functions on v4t. */
3359 if (eh->export_glue == NULL)
3362 globals = elf32_arm_hash_table (info);
3364 BFD_ASSERT (globals != NULL);
3365 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
3367 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
3368 ARM2THUMB_GLUE_SECTION_NAME);
3369 BFD_ASSERT (s != NULL);
3370 BFD_ASSERT (s->contents != NULL);
3371 BFD_ASSERT (s->output_section != NULL);
3373 sec = eh->export_glue->root.u.def.section;
3374 val = eh->export_glue->root.u.def.value + sec->output_offset
3375 + sec->output_section->vma;
3376 myh = elf32_arm_create_thumb_stub (info, h->root.root.string,
3377 h->root.u.def.section->owner,
3378 globals->obfd, sec, val, s);
3383 /* Generate Arm stubs for exported Thumb symbols. */
3385 elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED,
3386 struct bfd_link_info *link_info)
3388 struct elf32_arm_link_hash_table * globals;
3393 globals = elf32_arm_hash_table (link_info);
3394 /* If blx is available then exported Thumb symbols are OK and there is
3396 if (globals->use_blx)
3399 elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub,
3403 /* Some relocations map to different relocations depending on the
3404 target. Return the real relocation. */
3406 arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
3412 if (globals->target1_is_rel)
3418 return globals->target2_reloc;
3425 /* Return the base VMA address which should be subtracted from real addresses
3426 when resolving @dtpoff relocation.
3427 This is PT_TLS segment p_vaddr. */
3430 dtpoff_base (struct bfd_link_info *info)
3432 /* If tls_sec is NULL, we should have signalled an error already. */
3433 if (elf_hash_table (info)->tls_sec == NULL)
3435 return elf_hash_table (info)->tls_sec->vma;
3438 /* Return the relocation value for @tpoff relocation
3439 if STT_TLS virtual address is ADDRESS. */
3442 tpoff (struct bfd_link_info *info, bfd_vma address)
3444 struct elf_link_hash_table *htab = elf_hash_table (info);
3447 /* If tls_sec is NULL, we should have signalled an error already. */
3448 if (htab->tls_sec == NULL)
3450 base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
3451 return address - htab->tls_sec->vma + base;
3454 /* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
3455 VALUE is the relocation value. */
3457 static bfd_reloc_status_type
3458 elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value)
3461 return bfd_reloc_overflow;
3463 value |= bfd_get_32 (abfd, data) & 0xfffff000;
3464 bfd_put_32 (abfd, value, data);
3465 return bfd_reloc_ok;
3468 /* For a given value of n, calculate the value of G_n as required to
3469 deal with group relocations. We return it in the form of an
3470 encoded constant-and-rotation, together with the final residual. If n is
3471 specified as less than zero, then final_residual is filled with the
3472 input value and no further action is performed. */
3475 calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual)
3479 bfd_vma encoded_g_n = 0;
3480 bfd_vma residual = value; /* Also known as Y_n. */
3482 for (current_n = 0; current_n <= n; current_n++)
3486 /* Calculate which part of the value to mask. */
3493 /* Determine the most significant bit in the residual and
3494 align the resulting value to a 2-bit boundary. */
3495 for (msb = 30; msb >= 0; msb -= 2)
3496 if (residual & (3 << msb))
3499 /* The desired shift is now (msb - 6), or zero, whichever
3506 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
3507 g_n = residual & (0xff << shift);
3508 encoded_g_n = (g_n >> shift)
3509 | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8);
3511 /* Calculate the residual for the next time around. */
3515 *final_residual = residual;
3520 /* Given an ARM instruction, determine whether it is an ADD or a SUB.
3521 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
3523 identify_add_or_sub(bfd_vma insn)
3525 int opcode = insn & 0x1e00000;
3527 if (opcode == 1 << 23) /* ADD */
3530 if (opcode == 1 << 22) /* SUB */
3536 /* Determine if we're dealing with a Thumb-2 object. */
3538 static int using_thumb2 (struct elf32_arm_link_hash_table *globals)
3540 int arch = elf32_arm_get_eabi_attr_int (globals->obfd, Tag_CPU_arch);
3541 return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7;
3544 /* Perform a relocation as part of a final link. */
3546 static bfd_reloc_status_type
3547 elf32_arm_final_link_relocate (reloc_howto_type * howto,
3550 asection * input_section,
3551 bfd_byte * contents,
3552 Elf_Internal_Rela * rel,
3554 struct bfd_link_info * info,
3556 const char * sym_name,
3558 struct elf_link_hash_entry * h,
3559 bfd_boolean * unresolved_reloc_p)
3561 unsigned long r_type = howto->type;
3562 unsigned long r_symndx;
3563 bfd_byte * hit_data = contents + rel->r_offset;
3564 bfd * dynobj = NULL;
3565 Elf_Internal_Shdr * symtab_hdr;
3566 struct elf_link_hash_entry ** sym_hashes;
3567 bfd_vma * local_got_offsets;
3568 asection * sgot = NULL;
3569 asection * splt = NULL;
3570 asection * sreloc = NULL;
3572 bfd_signed_vma signed_addend;
3573 struct elf32_arm_link_hash_table * globals;
3575 globals = elf32_arm_hash_table (info);
3577 /* Some relocation type map to different relocations depending on the
3578 target. We pick the right one here. */
3579 r_type = arm_real_reloc_type (globals, r_type);
3580 if (r_type != howto->type)
3581 howto = elf32_arm_howto_from_type (r_type);
3583 /* If the start address has been set, then set the EF_ARM_HASENTRY
3584 flag. Setting this more than once is redundant, but the cost is
3585 not too high, and it keeps the code simple.
3587 The test is done here, rather than somewhere else, because the
3588 start address is only set just before the final link commences.
3590 Note - if the user deliberately sets a start address of 0, the
3591 flag will not be set. */
3592 if (bfd_get_start_address (output_bfd) != 0)
3593 elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
3595 dynobj = elf_hash_table (info)->dynobj;
3598 sgot = bfd_get_section_by_name (dynobj, ".got");
3599 splt = bfd_get_section_by_name (dynobj, ".plt");
3601 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
3602 sym_hashes = elf_sym_hashes (input_bfd);
3603 local_got_offsets = elf_local_got_offsets (input_bfd);
3604 r_symndx = ELF32_R_SYM (rel->r_info);
3606 if (globals->use_rel)
3608 addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
3610 if (addend & ((howto->src_mask + 1) >> 1))
3613 signed_addend &= ~ howto->src_mask;
3614 signed_addend |= addend;
3617 signed_addend = addend;
3620 addend = signed_addend = rel->r_addend;
3625 /* We don't need to find a value for this symbol. It's just a
3627 *unresolved_reloc_p = FALSE;
3628 return bfd_reloc_ok;
3631 if (!globals->vxworks_p)
3632 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
3636 case R_ARM_ABS32_NOI:
3638 case R_ARM_REL32_NOI:
3644 /* r_symndx will be zero only for relocs against symbols
3645 from removed linkonce sections, or sections discarded by
3648 return bfd_reloc_ok;
3650 /* Handle relocations which should use the PLT entry. ABS32/REL32
3651 will use the symbol's value, which may point to a PLT entry, but we
3652 don't need to handle that here. If we created a PLT entry, all
3653 branches in this object should go to it. */
3654 if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32
3655 && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI)
3658 && h->plt.offset != (bfd_vma) -1)
3660 /* If we've created a .plt section, and assigned a PLT entry to
3661 this function, it should not be known to bind locally. If
3662 it were, we would have cleared the PLT entry. */
3663 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
3665 value = (splt->output_section->vma
3666 + splt->output_offset
3668 *unresolved_reloc_p = FALSE;
3669 return _bfd_final_link_relocate (howto, input_bfd, input_section,
3670 contents, rel->r_offset, value,
3674 /* When generating a shared object or relocatable executable, these
3675 relocations are copied into the output file to be resolved at
3677 if ((info->shared || globals->root.is_relocatable_executable)
3678 && (input_section->flags & SEC_ALLOC)
3679 && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI)
3680 || !SYMBOL_CALLS_LOCAL (info, h))
3682 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3683 || h->root.type != bfd_link_hash_undefweak)
3684 && r_type != R_ARM_PC24
3685 && r_type != R_ARM_CALL
3686 && r_type != R_ARM_JUMP24
3687 && r_type != R_ARM_PREL31
3688 && r_type != R_ARM_PLT32)
3690 Elf_Internal_Rela outrel;
3692 bfd_boolean skip, relocate;
3694 *unresolved_reloc_p = FALSE;
3700 name = (bfd_elf_string_from_elf_section
3702 elf_elfheader (input_bfd)->e_shstrndx,
3703 elf_section_data (input_section)->rel_hdr.sh_name));
3705 return bfd_reloc_notsupported;
3707 BFD_ASSERT (reloc_section_p (globals, name, input_section));
3709 sreloc = bfd_get_section_by_name (dynobj, name);
3710 BFD_ASSERT (sreloc != NULL);
3716 outrel.r_addend = addend;
3718 _bfd_elf_section_offset (output_bfd, info, input_section,
3720 if (outrel.r_offset == (bfd_vma) -1)
3722 else if (outrel.r_offset == (bfd_vma) -2)
3723 skip = TRUE, relocate = TRUE;
3724 outrel.r_offset += (input_section->output_section->vma
3725 + input_section->output_offset);
3728 memset (&outrel, 0, sizeof outrel);
3733 || !h->def_regular))
3734 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3739 /* This symbol is local, or marked to become local. */
3740 if (sym_flags == STT_ARM_TFUNC)
3742 if (globals->symbian_p)
3746 /* On Symbian OS, the data segment and text segement
3747 can be relocated independently. Therefore, we
3748 must indicate the segment to which this
3749 relocation is relative. The BPABI allows us to
3750 use any symbol in the right segment; we just use
3751 the section symbol as it is convenient. (We
3752 cannot use the symbol given by "h" directly as it
3753 will not appear in the dynamic symbol table.)
3755 Note that the dynamic linker ignores the section
3756 symbol value, so we don't subtract osec->vma
3757 from the emitted reloc addend. */
3759 osec = sym_sec->output_section;
3761 osec = input_section->output_section;
3762 symbol = elf_section_data (osec)->dynindx;
3765 struct elf_link_hash_table *htab = elf_hash_table (info);
3767 if ((osec->flags & SEC_READONLY) == 0
3768 && htab->data_index_section != NULL)
3769 osec = htab->data_index_section;
3771 osec = htab->text_index_section;
3772 symbol = elf_section_data (osec)->dynindx;
3774 BFD_ASSERT (symbol != 0);
3777 /* On SVR4-ish systems, the dynamic loader cannot
3778 relocate the text and data segments independently,
3779 so the symbol does not matter. */
3781 outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
3782 if (globals->use_rel)
3785 outrel.r_addend += value;
3788 loc = sreloc->contents;
3789 loc += sreloc->reloc_count++ * RELOC_SIZE (globals);
3790 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
3792 /* If this reloc is against an external symbol, we do not want to
3793 fiddle with the addend. Otherwise, we need to include the symbol
3794 value so that it becomes an addend for the dynamic reloc. */
3796 return bfd_reloc_ok;
3798 return _bfd_final_link_relocate (howto, input_bfd, input_section,
3799 contents, rel->r_offset, value,
3802 else switch (r_type)
3805 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
3807 case R_ARM_XPC25: /* Arm BLX instruction. */
3810 case R_ARM_PC24: /* Arm B/BL instruction */
3812 if (r_type == R_ARM_XPC25)
3814 /* Check for Arm calling Arm function. */
3815 /* FIXME: Should we translate the instruction into a BL
3816 instruction instead ? */
3817 if (sym_flags != STT_ARM_TFUNC)
3818 (*_bfd_error_handler)
3819 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
3821 h ? h->root.root.string : "(local)");
3823 else if (r_type != R_ARM_CALL || !globals->use_blx)
3825 /* Check for Arm calling Thumb function. */
3826 if (sym_flags == STT_ARM_TFUNC)
3828 elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
3829 output_bfd, input_section,
3830 hit_data, sym_sec, rel->r_offset,
3831 signed_addend, value);
3832 return bfd_reloc_ok;
3836 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
3838 S is the address of the symbol in the relocation.
3839 P is address of the instruction being relocated.
3840 A is the addend (extracted from the instruction) in bytes.
3842 S is held in 'value'.
3843 P is the base address of the section containing the
3844 instruction plus the offset of the reloc into that
3846 (input_section->output_section->vma +
3847 input_section->output_offset +
3849 A is the addend, converted into bytes, ie:
3852 Note: None of these operations have knowledge of the pipeline
3853 size of the processor, thus it is up to the assembler to
3854 encode this information into the addend. */
3855 value -= (input_section->output_section->vma
3856 + input_section->output_offset);
3857 value -= rel->r_offset;
3858 if (globals->use_rel)
3859 value += (signed_addend << howto->size);
3861 /* RELA addends do not have to be adjusted by howto->size. */
3862 value += signed_addend;
3864 signed_addend = value;
3865 signed_addend >>= howto->rightshift;
3867 /* It is not an error for an undefined weak reference to be
3868 out of range. Any program that branches to such a symbol
3869 is going to crash anyway, so there is no point worrying
3870 about getting the destination exactly right. */
3871 if (! h || h->root.type != bfd_link_hash_undefweak)
3873 /* Perform a signed range check. */
3874 if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
3875 || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
3876 return bfd_reloc_overflow;
3879 addend = (value & 2);
3881 value = (signed_addend & howto->dst_mask)
3882 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
3884 /* Set the H bit in the BLX instruction. */
3885 if (sym_flags == STT_ARM_TFUNC)
3890 value &= ~(bfd_vma)(1 << 24);
3892 if (r_type == R_ARM_CALL)
3894 /* Select the correct instruction (BL or BLX). */
3895 if (sym_flags == STT_ARM_TFUNC)
3899 value &= ~(bfd_vma)(1 << 28);
3907 if (sym_flags == STT_ARM_TFUNC)
3911 case R_ARM_ABS32_NOI:
3917 if (sym_flags == STT_ARM_TFUNC)
3919 value -= (input_section->output_section->vma
3920 + input_section->output_offset + rel->r_offset);
3923 case R_ARM_REL32_NOI:
3925 value -= (input_section->output_section->vma
3926 + input_section->output_offset + rel->r_offset);
3930 value -= (input_section->output_section->vma
3931 + input_section->output_offset + rel->r_offset);
3932 value += signed_addend;
3933 if (! h || h->root.type != bfd_link_hash_undefweak)
3935 /* Check for overflow */
3936 if ((value ^ (value >> 1)) & (1 << 30))
3937 return bfd_reloc_overflow;
3939 value &= 0x7fffffff;
3940 value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
3941 if (sym_flags == STT_ARM_TFUNC)
3946 bfd_put_32 (input_bfd, value, hit_data);
3947 return bfd_reloc_ok;
3951 if ((long) value > 0x7f || (long) value < -0x80)
3952 return bfd_reloc_overflow;
3954 bfd_put_8 (input_bfd, value, hit_data);
3955 return bfd_reloc_ok;
3960 if ((long) value > 0x7fff || (long) value < -0x8000)
3961 return bfd_reloc_overflow;
3963 bfd_put_16 (input_bfd, value, hit_data);
3964 return bfd_reloc_ok;
3966 case R_ARM_THM_ABS5:
3967 /* Support ldr and str instructions for the thumb. */
3968 if (globals->use_rel)
3970 /* Need to refetch addend. */
3971 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
3972 /* ??? Need to determine shift amount from operand size. */
3973 addend >>= howto->rightshift;
3977 /* ??? Isn't value unsigned? */
3978 if ((long) value > 0x1f || (long) value < -0x10)
3979 return bfd_reloc_overflow;
3981 /* ??? Value needs to be properly shifted into place first. */
3982 value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
3983 bfd_put_16 (input_bfd, value, hit_data);
3984 return bfd_reloc_ok;
3986 case R_ARM_THM_ALU_PREL_11_0:
3987 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
3990 bfd_signed_vma relocation;
3992 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
3993 | bfd_get_16 (input_bfd, hit_data + 2);
3995 if (globals->use_rel)
3997 signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4)
3998 | ((insn & (1 << 26)) >> 15);
3999 if (insn & 0xf00000)
4000 signed_addend = -signed_addend;
4003 relocation = value + signed_addend;
4004 relocation -= (input_section->output_section->vma
4005 + input_section->output_offset
4008 value = abs (relocation);
4010 if (value >= 0x1000)
4011 return bfd_reloc_overflow;
4013 insn = (insn & 0xfb0f8f00) | (value & 0xff)
4014 | ((value & 0x700) << 4)
4015 | ((value & 0x800) << 15);
4019 bfd_put_16 (input_bfd, insn >> 16, hit_data);
4020 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
4022 return bfd_reloc_ok;
4025 case R_ARM_THM_PC12:
4026 /* Corresponds to: ldr.w reg, [pc, #offset]. */
4029 bfd_signed_vma relocation;
4031 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
4032 | bfd_get_16 (input_bfd, hit_data + 2);
4034 if (globals->use_rel)
4036 signed_addend = insn & 0xfff;
4037 if (!(insn & (1 << 23)))
4038 signed_addend = -signed_addend;
4041 relocation = value + signed_addend;
4042 relocation -= (input_section->output_section->vma
4043 + input_section->output_offset
4046 value = abs (relocation);
4048 if (value >= 0x1000)
4049 return bfd_reloc_overflow;
4051 insn = (insn & 0xff7ff000) | value;
4052 if (relocation >= 0)
4055 bfd_put_16 (input_bfd, insn >> 16, hit_data);
4056 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
4058 return bfd_reloc_ok;
4061 case R_ARM_THM_XPC22:
4062 case R_ARM_THM_CALL:
4063 /* Thumb BL (branch long instruction). */
4067 bfd_boolean overflow = FALSE;
4068 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
4069 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
4070 bfd_signed_vma reloc_signed_max;
4071 bfd_signed_vma reloc_signed_min;
4073 bfd_signed_vma signed_check;
4075 int thumb2 = using_thumb2 (globals);
4077 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
4078 with Thumb-1) involving the J1 and J2 bits. */
4079 if (globals->use_rel)
4081 bfd_vma s = (upper_insn & (1 << 10)) >> 10;
4082 bfd_vma upper = upper_insn & 0x3ff;
4083 bfd_vma lower = lower_insn & 0x7ff;
4084 bfd_vma j1 = (lower_insn & (1 << 13)) >> 13;
4085 bfd_vma j2 = (lower_insn & (1 << 11)) >> 11;
4086 bfd_vma i1 = j1 ^ s ? 0 : 1;
4087 bfd_vma i2 = j2 ^ s ? 0 : 1;
4089 addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1);
4091 addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24);
4093 signed_addend = addend;
4096 if (r_type == R_ARM_THM_XPC22)
4098 /* Check for Thumb to Thumb call. */
4099 /* FIXME: Should we translate the instruction into a BL
4100 instruction instead ? */
4101 if (sym_flags == STT_ARM_TFUNC)
4102 (*_bfd_error_handler)
4103 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
4105 h ? h->root.root.string : "(local)");
4109 /* If it is not a call to Thumb, assume call to Arm.
4110 If it is a call relative to a section name, then it is not a
4111 function call at all, but rather a long jump. Calls through
4112 the PLT do not require stubs. */
4113 if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION
4114 && (h == NULL || splt == NULL
4115 || h->plt.offset == (bfd_vma) -1))
4117 if (globals->use_blx)
4119 /* Convert BL to BLX. */
4120 lower_insn = (lower_insn & ~0x1000) | 0x0800;
4122 else if (elf32_thumb_to_arm_stub
4123 (info, sym_name, input_bfd, output_bfd, input_section,
4124 hit_data, sym_sec, rel->r_offset, signed_addend, value))
4125 return bfd_reloc_ok;
4127 return bfd_reloc_dangerous;
4129 else if (sym_flags == STT_ARM_TFUNC && globals->use_blx)
4131 /* Make sure this is a BL. */
4132 lower_insn |= 0x1800;
4136 /* Handle calls via the PLT. */
4137 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
4139 value = (splt->output_section->vma
4140 + splt->output_offset
4142 if (globals->use_blx)
4144 /* If the Thumb BLX instruction is available, convert the
4145 BL to a BLX instruction to call the ARM-mode PLT entry. */
4146 lower_insn = (lower_insn & ~0x1000) | 0x0800;
4149 /* Target the Thumb stub before the ARM PLT entry. */
4150 value -= PLT_THUMB_STUB_SIZE;
4151 *unresolved_reloc_p = FALSE;
4154 relocation = value + signed_addend;
4156 relocation -= (input_section->output_section->vma
4157 + input_section->output_offset
4160 check = relocation >> howto->rightshift;
4162 /* If this is a signed value, the rightshift just dropped
4163 leading 1 bits (assuming twos complement). */
4164 if ((bfd_signed_vma) relocation >= 0)
4165 signed_check = check;
4167 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
4169 /* Calculate the permissable maximum and minimum values for
4170 this relocation according to whether we're relocating for
4172 bitsize = howto->bitsize;
4175 reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift;
4176 reloc_signed_min = ~reloc_signed_max;
4178 /* Assumes two's complement. */
4179 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
4182 if ((lower_insn & 0x1800) == 0x0800)
4183 /* For a BLX instruction, make sure that the relocation is rounded up
4184 to a word boundary. This follows the semantics of the instruction
4185 which specifies that bit 1 of the target address will come from bit
4186 1 of the base address. */
4187 relocation = (relocation + 2) & ~ 3;
4189 /* Put RELOCATION back into the insn. Assumes two's complement.
4190 We use the Thumb-2 encoding, which is safe even if dealing with
4191 a Thumb-1 instruction by virtue of our overflow check above. */
4192 reloc_sign = (signed_check < 0) ? 1 : 0;
4193 upper_insn = (upper_insn & ~(bfd_vma) 0x7ff)
4194 | ((relocation >> 12) & 0x3ff)
4195 | (reloc_sign << 10);
4196 lower_insn = (lower_insn & ~(bfd_vma) 0x2fff)
4197 | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13)
4198 | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11)
4199 | ((relocation >> 1) & 0x7ff);
4201 /* Put the relocated value back in the object file: */
4202 bfd_put_16 (input_bfd, upper_insn, hit_data);
4203 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
4205 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
4209 case R_ARM_THM_JUMP24:
4210 /* Thumb32 unconditional branch instruction. */
4213 bfd_boolean overflow = FALSE;
4214 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
4215 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
4216 bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift;
4217 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
4219 bfd_signed_vma signed_check;
4221 /* Need to refetch the addend, reconstruct the top three bits, and glue the
4222 two pieces together. */
4223 if (globals->use_rel)
4225 bfd_vma S = (upper_insn & 0x0400) >> 10;
4226 bfd_vma hi = (upper_insn & 0x03ff);
4227 bfd_vma I1 = (lower_insn & 0x2000) >> 13;
4228 bfd_vma I2 = (lower_insn & 0x0800) >> 11;
4229 bfd_vma lo = (lower_insn & 0x07ff);
4235 signed_addend = (S << 24) | (I1 << 23) | (I2 << 22) | (hi << 12) | (lo << 1);
4236 signed_addend -= (1 << 24); /* Sign extend. */
4239 /* ??? Should handle interworking? GCC might someday try to
4240 use this for tail calls. */
4242 relocation = value + signed_addend;
4243 relocation -= (input_section->output_section->vma
4244 + input_section->output_offset
4247 check = relocation >> howto->rightshift;
4249 /* If this is a signed value, the rightshift just dropped
4250 leading 1 bits (assuming twos complement). */
4251 if ((bfd_signed_vma) relocation >= 0)
4252 signed_check = check;
4254 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
4256 /* Assumes two's complement. */
4257 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
4260 /* Put RELOCATION back into the insn. */
4262 bfd_vma S = (relocation & 0x01000000) >> 24;
4263 bfd_vma I1 = (relocation & 0x00800000) >> 23;
4264 bfd_vma I2 = (relocation & 0x00400000) >> 22;
4265 bfd_vma hi = (relocation & 0x003ff000) >> 12;
4266 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
4271 upper_insn = (upper_insn & (bfd_vma) 0xf800) | (S << 10) | hi;
4272 lower_insn = (lower_insn & (bfd_vma) 0xd000) | (I1 << 13) | (I2 << 11) | lo;
4275 /* Put the relocated value back in the object file: */
4276 bfd_put_16 (input_bfd, upper_insn, hit_data);
4277 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
4279 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
4282 case R_ARM_THM_JUMP19:
4283 /* Thumb32 conditional branch instruction. */
4286 bfd_boolean overflow = FALSE;
4287 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
4288 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
4289 bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift;
4290 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
4292 bfd_signed_vma signed_check;
4294 /* Need to refetch the addend, reconstruct the top three bits,
4295 and squish the two 11 bit pieces together. */
4296 if (globals->use_rel)
4298 bfd_vma S = (upper_insn & 0x0400) >> 10;
4299 bfd_vma upper = (upper_insn & 0x001f);
4300 bfd_vma J1 = (lower_insn & 0x2000) >> 13;
4301 bfd_vma J2 = (lower_insn & 0x0800) >> 11;
4302 bfd_vma lower = (lower_insn & 0x07ff);
4307 upper -= 0x0100; /* Sign extend. */
4309 addend = (upper << 12) | (lower << 1);
4310 signed_addend = addend;
4313 /* ??? Should handle interworking? GCC might someday try to
4314 use this for tail calls. */
4316 relocation = value + signed_addend;
4317 relocation -= (input_section->output_section->vma
4318 + input_section->output_offset
4321 check = relocation >> howto->rightshift;
4323 /* If this is a signed value, the rightshift just dropped
4324 leading 1 bits (assuming twos complement). */
4325 if ((bfd_signed_vma) relocation >= 0)
4326 signed_check = check;
4328 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
4330 /* Assumes two's complement. */
4331 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
4334 /* Put RELOCATION back into the insn. */
4336 bfd_vma S = (relocation & 0x00100000) >> 20;
4337 bfd_vma J2 = (relocation & 0x00080000) >> 19;
4338 bfd_vma J1 = (relocation & 0x00040000) >> 18;
4339 bfd_vma hi = (relocation & 0x0003f000) >> 12;
4340 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
4342 upper_insn = (upper_insn & 0xfb30) | (S << 10) | hi;
4343 lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
4346 /* Put the relocated value back in the object file: */
4347 bfd_put_16 (input_bfd, upper_insn, hit_data);
4348 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
4350 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
4353 case R_ARM_THM_JUMP11:
4354 case R_ARM_THM_JUMP8:
4355 case R_ARM_THM_JUMP6:
4356 /* Thumb B (branch) instruction). */
4358 bfd_signed_vma relocation;
4359 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
4360 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
4361 bfd_signed_vma signed_check;
4363 /* CZB cannot jump backward. */
4364 if (r_type == R_ARM_THM_JUMP6)
4365 reloc_signed_min = 0;
4367 if (globals->use_rel)
4369 /* Need to refetch addend. */
4370 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
4371 if (addend & ((howto->src_mask + 1) >> 1))
4374 signed_addend &= ~ howto->src_mask;
4375 signed_addend |= addend;
4378 signed_addend = addend;
4379 /* The value in the insn has been right shifted. We need to
4380 undo this, so that we can perform the address calculation
4381 in terms of bytes. */
4382 signed_addend <<= howto->rightshift;
4384 relocation = value + signed_addend;
4386 relocation -= (input_section->output_section->vma
4387 + input_section->output_offset
4390 relocation >>= howto->rightshift;
4391 signed_check = relocation;
4393 if (r_type == R_ARM_THM_JUMP6)
4394 relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
4396 relocation &= howto->dst_mask;
4397 relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
4399 bfd_put_16 (input_bfd, relocation, hit_data);
4401 /* Assumes two's complement. */
4402 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
4403 return bfd_reloc_overflow;
4405 return bfd_reloc_ok;
4408 case R_ARM_ALU_PCREL7_0:
4409 case R_ARM_ALU_PCREL15_8:
4410 case R_ARM_ALU_PCREL23_15:
4415 insn = bfd_get_32 (input_bfd, hit_data);
4416 if (globals->use_rel)
4418 /* Extract the addend. */
4419 addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
4420 signed_addend = addend;
4422 relocation = value + signed_addend;
4424 relocation -= (input_section->output_section->vma
4425 + input_section->output_offset
4427 insn = (insn & ~0xfff)
4428 | ((howto->bitpos << 7) & 0xf00)
4429 | ((relocation >> howto->bitpos) & 0xff);
4430 bfd_put_32 (input_bfd, value, hit_data);
4432 return bfd_reloc_ok;
4434 case R_ARM_GNU_VTINHERIT:
4435 case R_ARM_GNU_VTENTRY:
4436 return bfd_reloc_ok;
4438 case R_ARM_GOTOFF32:
4439 /* Relocation is relative to the start of the
4440 global offset table. */
4442 BFD_ASSERT (sgot != NULL);
4444 return bfd_reloc_notsupported;
4446 /* If we are addressing a Thumb function, we need to adjust the
4447 address by one, so that attempts to call the function pointer will
4448 correctly interpret it as Thumb code. */
4449 if (sym_flags == STT_ARM_TFUNC)
4452 /* Note that sgot->output_offset is not involved in this
4453 calculation. We always want the start of .got. If we
4454 define _GLOBAL_OFFSET_TABLE in a different way, as is
4455 permitted by the ABI, we might have to change this
4457 value -= sgot->output_section->vma;
4458 return _bfd_final_link_relocate (howto, input_bfd, input_section,
4459 contents, rel->r_offset, value,
4463 /* Use global offset table as symbol value. */
4464 BFD_ASSERT (sgot != NULL);
4467 return bfd_reloc_notsupported;
4469 *unresolved_reloc_p = FALSE;
4470 value = sgot->output_section->vma;
4471 return _bfd_final_link_relocate (howto, input_bfd, input_section,
4472 contents, rel->r_offset, value,
4476 case R_ARM_GOT_PREL:
4477 /* Relocation is to the entry for this symbol in the
4478 global offset table. */
4480 return bfd_reloc_notsupported;
4487 off = h->got.offset;
4488 BFD_ASSERT (off != (bfd_vma) -1);
4489 dyn = globals->root.dynamic_sections_created;
4491 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
4493 && SYMBOL_REFERENCES_LOCAL (info, h))
4494 || (ELF_ST_VISIBILITY (h->other)
4495 && h->root.type == bfd_link_hash_undefweak))
4497 /* This is actually a static link, or it is a -Bsymbolic link
4498 and the symbol is defined locally. We must initialize this
4499 entry in the global offset table. Since the offset must
4500 always be a multiple of 4, we use the least significant bit
4501 to record whether we have initialized it already.
4503 When doing a dynamic link, we create a .rel(a).got relocation
4504 entry to initialize the value. This is done in the
4505 finish_dynamic_symbol routine. */
4510 /* If we are addressing a Thumb function, we need to
4511 adjust the address by one, so that attempts to
4512 call the function pointer will correctly
4513 interpret it as Thumb code. */
4514 if (sym_flags == STT_ARM_TFUNC)
4517 bfd_put_32 (output_bfd, value, sgot->contents + off);
4522 *unresolved_reloc_p = FALSE;
4524 value = sgot->output_offset + off;
4530 BFD_ASSERT (local_got_offsets != NULL &&
4531 local_got_offsets[r_symndx] != (bfd_vma) -1);
4533 off = local_got_offsets[r_symndx];
4535 /* The offset must always be a multiple of 4. We use the
4536 least significant bit to record whether we have already
4537 generated the necessary reloc. */
4542 /* If we are addressing a Thumb function, we need to
4543 adjust the address by one, so that attempts to
4544 call the function pointer will correctly
4545 interpret it as Thumb code. */
4546 if (sym_flags == STT_ARM_TFUNC)
4549 if (globals->use_rel)
4550 bfd_put_32 (output_bfd, value, sgot->contents + off);
4555 Elf_Internal_Rela outrel;
4558 srelgot = (bfd_get_section_by_name
4559 (dynobj, RELOC_SECTION (globals, ".got")));
4560 BFD_ASSERT (srelgot != NULL);
4562 outrel.r_addend = addend + value;
4563 outrel.r_offset = (sgot->output_section->vma
4564 + sgot->output_offset
4566 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
4567 loc = srelgot->contents;
4568 loc += srelgot->reloc_count++ * RELOC_SIZE (globals);
4569 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
4572 local_got_offsets[r_symndx] |= 1;
4575 value = sgot->output_offset + off;
4577 if (r_type != R_ARM_GOT32)
4578 value += sgot->output_section->vma;
4580 return _bfd_final_link_relocate (howto, input_bfd, input_section,
4581 contents, rel->r_offset, value,
4584 case R_ARM_TLS_LDO32:
4585 value = value - dtpoff_base (info);
4587 return _bfd_final_link_relocate (howto, input_bfd, input_section,
4588 contents, rel->r_offset, value,
4591 case R_ARM_TLS_LDM32:
4595 if (globals->sgot == NULL)
4598 off = globals->tls_ldm_got.offset;
4604 /* If we don't know the module number, create a relocation
4608 Elf_Internal_Rela outrel;
4611 if (globals->srelgot == NULL)
4614 outrel.r_addend = 0;
4615 outrel.r_offset = (globals->sgot->output_section->vma
4616 + globals->sgot->output_offset + off);
4617 outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
4619 if (globals->use_rel)
4620 bfd_put_32 (output_bfd, outrel.r_addend,
4621 globals->sgot->contents + off);
4623 loc = globals->srelgot->contents;
4624 loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals);
4625 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
4628 bfd_put_32 (output_bfd, 1, globals->sgot->contents + off);
4630 globals->tls_ldm_got.offset |= 1;
4633 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
4634 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
4636 return _bfd_final_link_relocate (howto, input_bfd, input_section,
4637 contents, rel->r_offset, value,
4641 case R_ARM_TLS_GD32:
4642 case R_ARM_TLS_IE32:
4648 if (globals->sgot == NULL)
4655 dyn = globals->root.dynamic_sections_created;
4656 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
4658 || !SYMBOL_REFERENCES_LOCAL (info, h)))
4660 *unresolved_reloc_p = FALSE;
4663 off = h->got.offset;
4664 tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
4668 if (local_got_offsets == NULL)
4670 off = local_got_offsets[r_symndx];
4671 tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
4674 if (tls_type == GOT_UNKNOWN)
4681 bfd_boolean need_relocs = FALSE;
4682 Elf_Internal_Rela outrel;
4683 bfd_byte *loc = NULL;
4686 /* The GOT entries have not been initialized yet. Do it
4687 now, and emit any relocations. If both an IE GOT and a
4688 GD GOT are necessary, we emit the GD first. */
4690 if ((info->shared || indx != 0)
4692 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4693 || h->root.type != bfd_link_hash_undefweak))
4696 if (globals->srelgot == NULL)
4698 loc = globals->srelgot->contents;
4699 loc += globals->srelgot->reloc_count * RELOC_SIZE (globals);
4702 if (tls_type & GOT_TLS_GD)
4706 outrel.r_addend = 0;
4707 outrel.r_offset = (globals->sgot->output_section->vma
4708 + globals->sgot->output_offset
4710 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
4712 if (globals->use_rel)
4713 bfd_put_32 (output_bfd, outrel.r_addend,
4714 globals->sgot->contents + cur_off);
4716 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
4717 globals->srelgot->reloc_count++;
4718 loc += RELOC_SIZE (globals);
4721 bfd_put_32 (output_bfd, value - dtpoff_base (info),
4722 globals->sgot->contents + cur_off + 4);
4725 outrel.r_addend = 0;
4726 outrel.r_info = ELF32_R_INFO (indx,
4727 R_ARM_TLS_DTPOFF32);
4728 outrel.r_offset += 4;
4730 if (globals->use_rel)
4731 bfd_put_32 (output_bfd, outrel.r_addend,
4732 globals->sgot->contents + cur_off + 4);
4735 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
4736 globals->srelgot->reloc_count++;
4737 loc += RELOC_SIZE (globals);
4742 /* If we are not emitting relocations for a
4743 general dynamic reference, then we must be in a
4744 static link or an executable link with the
4745 symbol binding locally. Mark it as belonging
4746 to module 1, the executable. */
4747 bfd_put_32 (output_bfd, 1,
4748 globals->sgot->contents + cur_off);
4749 bfd_put_32 (output_bfd, value - dtpoff_base (info),
4750 globals->sgot->contents + cur_off + 4);
4756 if (tls_type & GOT_TLS_IE)
4761 outrel.r_addend = value - dtpoff_base (info);
4763 outrel.r_addend = 0;
4764 outrel.r_offset = (globals->sgot->output_section->vma
4765 + globals->sgot->output_offset
4767 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
4769 if (globals->use_rel)
4770 bfd_put_32 (output_bfd, outrel.r_addend,
4771 globals->sgot->contents + cur_off);
4773 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
4774 globals->srelgot->reloc_count++;
4775 loc += RELOC_SIZE (globals);
4778 bfd_put_32 (output_bfd, tpoff (info, value),
4779 globals->sgot->contents + cur_off);
4786 local_got_offsets[r_symndx] |= 1;
4789 if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
4791 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
4792 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
4794 return _bfd_final_link_relocate (howto, input_bfd, input_section,
4795 contents, rel->r_offset, value,
4799 case R_ARM_TLS_LE32:
4802 (*_bfd_error_handler)
4803 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
4804 input_bfd, input_section,
4805 (long) rel->r_offset, howto->name);
4809 value = tpoff (info, value);
4811 return _bfd_final_link_relocate (howto, input_bfd, input_section,
4812 contents, rel->r_offset, value,
4816 if (globals->fix_v4bx)
4818 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
4820 /* Ensure that we have a BX instruction. */
4821 BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
4823 /* Preserve Rm (lowest four bits) and the condition code
4824 (highest four bits). Other bits encode MOV PC,Rm. */
4825 insn = (insn & 0xf000000f) | 0x01a0f000;
4827 bfd_put_32 (input_bfd, insn, hit_data);
4829 return bfd_reloc_ok;
4831 case R_ARM_MOVW_ABS_NC:
4832 case R_ARM_MOVT_ABS:
4833 case R_ARM_MOVW_PREL_NC:
4834 case R_ARM_MOVT_PREL:
4836 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
4838 if (globals->use_rel)
4840 addend = ((insn >> 4) & 0xf000) | (insn & 0xfff);
4841 signed_addend = (addend ^ 0x10000) - 0x10000;
4843 value += signed_addend;
4844 if (sym_flags == STT_ARM_TFUNC)
4847 if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL)
4848 value -= (input_section->output_section->vma
4849 + input_section->output_offset + rel->r_offset);
4851 if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL)
4855 insn |= value & 0xfff;
4856 insn |= (value & 0xf000) << 4;
4857 bfd_put_32 (input_bfd, insn, hit_data);
4859 return bfd_reloc_ok;
4861 case R_ARM_THM_MOVW_ABS_NC:
4862 case R_ARM_THM_MOVT_ABS:
4863 case R_ARM_THM_MOVW_PREL_NC:
4864 case R_ARM_THM_MOVT_PREL:
4868 insn = bfd_get_16 (input_bfd, hit_data) << 16;
4869 insn |= bfd_get_16 (input_bfd, hit_data + 2);
4871 if (globals->use_rel)
4873 addend = ((insn >> 4) & 0xf000)
4874 | ((insn >> 15) & 0x0800)
4875 | ((insn >> 4) & 0x0700)
4877 signed_addend = (addend ^ 0x10000) - 0x10000;
4879 value += signed_addend;
4880 if (sym_flags == STT_ARM_TFUNC)
4883 if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL)
4884 value -= (input_section->output_section->vma
4885 + input_section->output_offset + rel->r_offset);
4887 if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL)
4891 insn |= (value & 0xf000) << 4;
4892 insn |= (value & 0x0800) << 15;
4893 insn |= (value & 0x0700) << 4;
4894 insn |= (value & 0x00ff);
4896 bfd_put_16 (input_bfd, insn >> 16, hit_data);
4897 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
4899 return bfd_reloc_ok;
4901 case R_ARM_ALU_PC_G0_NC:
4902 case R_ARM_ALU_PC_G1_NC:
4903 case R_ARM_ALU_PC_G0:
4904 case R_ARM_ALU_PC_G1:
4905 case R_ARM_ALU_PC_G2:
4906 case R_ARM_ALU_SB_G0_NC:
4907 case R_ARM_ALU_SB_G1_NC:
4908 case R_ARM_ALU_SB_G0:
4909 case R_ARM_ALU_SB_G1:
4910 case R_ARM_ALU_SB_G2:
4912 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
4913 bfd_vma pc = input_section->output_section->vma
4914 + input_section->output_offset + rel->r_offset;
4915 /* sb should be the origin of the *segment* containing the symbol.
4916 It is not clear how to obtain this OS-dependent value, so we
4917 make an arbitrary choice of zero. */
4921 bfd_signed_vma signed_value;
4924 /* Determine which group of bits to select. */
4927 case R_ARM_ALU_PC_G0_NC:
4928 case R_ARM_ALU_PC_G0:
4929 case R_ARM_ALU_SB_G0_NC:
4930 case R_ARM_ALU_SB_G0:
4934 case R_ARM_ALU_PC_G1_NC:
4935 case R_ARM_ALU_PC_G1:
4936 case R_ARM_ALU_SB_G1_NC:
4937 case R_ARM_ALU_SB_G1:
4941 case R_ARM_ALU_PC_G2:
4942 case R_ARM_ALU_SB_G2:
4950 /* If REL, extract the addend from the insn. If RELA, it will
4951 have already been fetched for us. */
4952 if (globals->use_rel)
4955 bfd_vma constant = insn & 0xff;
4956 bfd_vma rotation = (insn & 0xf00) >> 8;
4959 signed_addend = constant;
4962 /* Compensate for the fact that in the instruction, the
4963 rotation is stored in multiples of 2 bits. */
4966 /* Rotate "constant" right by "rotation" bits. */
4967 signed_addend = (constant >> rotation) |
4968 (constant << (8 * sizeof (bfd_vma) - rotation));
4971 /* Determine if the instruction is an ADD or a SUB.
4972 (For REL, this determines the sign of the addend.) */
4973 negative = identify_add_or_sub (insn);
4976 (*_bfd_error_handler)
4977 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
4978 input_bfd, input_section,
4979 (long) rel->r_offset, howto->name);
4980 return bfd_reloc_overflow;
4983 signed_addend *= negative;
4986 /* Compute the value (X) to go in the place. */
4987 if (r_type == R_ARM_ALU_PC_G0_NC
4988 || r_type == R_ARM_ALU_PC_G1_NC
4989 || r_type == R_ARM_ALU_PC_G0
4990 || r_type == R_ARM_ALU_PC_G1
4991 || r_type == R_ARM_ALU_PC_G2)
4993 signed_value = value - pc + signed_addend;
4995 /* Section base relative. */
4996 signed_value = value - sb + signed_addend;
4998 /* If the target symbol is a Thumb function, then set the
4999 Thumb bit in the address. */
5000 if (sym_flags == STT_ARM_TFUNC)
5003 /* Calculate the value of the relevant G_n, in encoded
5004 constant-with-rotation format. */
5005 g_n = calculate_group_reloc_mask (abs (signed_value), group,
5008 /* Check for overflow if required. */
5009 if ((r_type == R_ARM_ALU_PC_G0
5010 || r_type == R_ARM_ALU_PC_G1
5011 || r_type == R_ARM_ALU_PC_G2
5012 || r_type == R_ARM_ALU_SB_G0
5013 || r_type == R_ARM_ALU_SB_G1
5014 || r_type == R_ARM_ALU_SB_G2) && residual != 0)
5016 (*_bfd_error_handler)
5017 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5018 input_bfd, input_section,
5019 (long) rel->r_offset, abs (signed_value), howto->name);
5020 return bfd_reloc_overflow;
5023 /* Mask out the value and the ADD/SUB part of the opcode; take care
5024 not to destroy the S bit. */
5027 /* Set the opcode according to whether the value to go in the
5028 place is negative. */
5029 if (signed_value < 0)
5034 /* Encode the offset. */
5037 bfd_put_32 (input_bfd, insn, hit_data);
5039 return bfd_reloc_ok;
5041 case R_ARM_LDR_PC_G0:
5042 case R_ARM_LDR_PC_G1:
5043 case R_ARM_LDR_PC_G2:
5044 case R_ARM_LDR_SB_G0:
5045 case R_ARM_LDR_SB_G1:
5046 case R_ARM_LDR_SB_G2:
5048 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5049 bfd_vma pc = input_section->output_section->vma
5050 + input_section->output_offset + rel->r_offset;
5051 bfd_vma sb = 0; /* See note above. */
5053 bfd_signed_vma signed_value;
5056 /* Determine which groups of bits to calculate. */
5059 case R_ARM_LDR_PC_G0:
5060 case R_ARM_LDR_SB_G0:
5064 case R_ARM_LDR_PC_G1:
5065 case R_ARM_LDR_SB_G1:
5069 case R_ARM_LDR_PC_G2:
5070 case R_ARM_LDR_SB_G2:
5078 /* If REL, extract the addend from the insn. If RELA, it will
5079 have already been fetched for us. */
5080 if (globals->use_rel)
5082 int negative = (insn & (1 << 23)) ? 1 : -1;
5083 signed_addend = negative * (insn & 0xfff);
5086 /* Compute the value (X) to go in the place. */
5087 if (r_type == R_ARM_LDR_PC_G0
5088 || r_type == R_ARM_LDR_PC_G1
5089 || r_type == R_ARM_LDR_PC_G2)
5091 signed_value = value - pc + signed_addend;
5093 /* Section base relative. */
5094 signed_value = value - sb + signed_addend;
5096 /* Calculate the value of the relevant G_{n-1} to obtain
5097 the residual at that stage. */
5098 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
5100 /* Check for overflow. */
5101 if (residual >= 0x1000)
5103 (*_bfd_error_handler)
5104 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5105 input_bfd, input_section,
5106 (long) rel->r_offset, abs (signed_value), howto->name);
5107 return bfd_reloc_overflow;
5110 /* Mask out the value and U bit. */
5113 /* Set the U bit if the value to go in the place is non-negative. */
5114 if (signed_value >= 0)
5117 /* Encode the offset. */
5120 bfd_put_32 (input_bfd, insn, hit_data);
5122 return bfd_reloc_ok;
5124 case R_ARM_LDRS_PC_G0:
5125 case R_ARM_LDRS_PC_G1:
5126 case R_ARM_LDRS_PC_G2:
5127 case R_ARM_LDRS_SB_G0:
5128 case R_ARM_LDRS_SB_G1:
5129 case R_ARM_LDRS_SB_G2:
5131 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5132 bfd_vma pc = input_section->output_section->vma
5133 + input_section->output_offset + rel->r_offset;
5134 bfd_vma sb = 0; /* See note above. */
5136 bfd_signed_vma signed_value;
5139 /* Determine which groups of bits to calculate. */
5142 case R_ARM_LDRS_PC_G0:
5143 case R_ARM_LDRS_SB_G0:
5147 case R_ARM_LDRS_PC_G1:
5148 case R_ARM_LDRS_SB_G1:
5152 case R_ARM_LDRS_PC_G2:
5153 case R_ARM_LDRS_SB_G2:
5161 /* If REL, extract the addend from the insn. If RELA, it will
5162 have already been fetched for us. */
5163 if (globals->use_rel)
5165 int negative = (insn & (1 << 23)) ? 1 : -1;
5166 signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf));
5169 /* Compute the value (X) to go in the place. */
5170 if (r_type == R_ARM_LDRS_PC_G0
5171 || r_type == R_ARM_LDRS_PC_G1
5172 || r_type == R_ARM_LDRS_PC_G2)
5174 signed_value = value - pc + signed_addend;
5176 /* Section base relative. */
5177 signed_value = value - sb + signed_addend;
5179 /* Calculate the value of the relevant G_{n-1} to obtain
5180 the residual at that stage. */
5181 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
5183 /* Check for overflow. */
5184 if (residual >= 0x100)
5186 (*_bfd_error_handler)
5187 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5188 input_bfd, input_section,
5189 (long) rel->r_offset, abs (signed_value), howto->name);
5190 return bfd_reloc_overflow;
5193 /* Mask out the value and U bit. */
5196 /* Set the U bit if the value to go in the place is non-negative. */
5197 if (signed_value >= 0)
5200 /* Encode the offset. */
5201 insn |= ((residual & 0xf0) << 4) | (residual & 0xf);
5203 bfd_put_32 (input_bfd, insn, hit_data);
5205 return bfd_reloc_ok;
5207 case R_ARM_LDC_PC_G0:
5208 case R_ARM_LDC_PC_G1:
5209 case R_ARM_LDC_PC_G2:
5210 case R_ARM_LDC_SB_G0:
5211 case R_ARM_LDC_SB_G1:
5212 case R_ARM_LDC_SB_G2:
5214 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5215 bfd_vma pc = input_section->output_section->vma
5216 + input_section->output_offset + rel->r_offset;
5217 bfd_vma sb = 0; /* See note above. */
5219 bfd_signed_vma signed_value;
5222 /* Determine which groups of bits to calculate. */
5225 case R_ARM_LDC_PC_G0:
5226 case R_ARM_LDC_SB_G0:
5230 case R_ARM_LDC_PC_G1:
5231 case R_ARM_LDC_SB_G1:
5235 case R_ARM_LDC_PC_G2:
5236 case R_ARM_LDC_SB_G2:
5244 /* If REL, extract the addend from the insn. If RELA, it will
5245 have already been fetched for us. */
5246 if (globals->use_rel)
5248 int negative = (insn & (1 << 23)) ? 1 : -1;
5249 signed_addend = negative * ((insn & 0xff) << 2);
5252 /* Compute the value (X) to go in the place. */
5253 if (r_type == R_ARM_LDC_PC_G0
5254 || r_type == R_ARM_LDC_PC_G1
5255 || r_type == R_ARM_LDC_PC_G2)
5257 signed_value = value - pc + signed_addend;
5259 /* Section base relative. */
5260 signed_value = value - sb + signed_addend;
5262 /* Calculate the value of the relevant G_{n-1} to obtain
5263 the residual at that stage. */
5264 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
5266 /* Check for overflow. (The absolute value to go in the place must be
5267 divisible by four and, after having been divided by four, must
5268 fit in eight bits.) */
5269 if ((residual & 0x3) != 0 || residual >= 0x400)
5271 (*_bfd_error_handler)
5272 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5273 input_bfd, input_section,
5274 (long) rel->r_offset, abs (signed_value), howto->name);
5275 return bfd_reloc_overflow;
5278 /* Mask out the value and U bit. */
5281 /* Set the U bit if the value to go in the place is non-negative. */
5282 if (signed_value >= 0)
5285 /* Encode the offset. */
5286 insn |= residual >> 2;
5288 bfd_put_32 (input_bfd, insn, hit_data);
5290 return bfd_reloc_ok;
5293 return bfd_reloc_notsupported;
5299 uleb128_size (unsigned int i)
5311 /* Return TRUE if the attribute has the default value (0/""). */
5313 is_default_attr (aeabi_attribute *attr)
5315 if ((attr->type & 1) && attr->i != 0)
5317 if ((attr->type & 2) && attr->s && *attr->s)
5323 /* Return the size of a single attribute. */
5325 eabi_attr_size(int tag, aeabi_attribute *attr)
5329 if (is_default_attr (attr))
5332 size = uleb128_size (tag);
5334 size += uleb128_size (attr->i);
5336 size += strlen ((char *)attr->s) + 1;
5340 /* Returns the size of the eabi object attributess section. */
5342 elf32_arm_eabi_attr_size (bfd *abfd)
5345 aeabi_attribute *attr;
5346 aeabi_attribute_list *list;
5349 attr = elf32_arm_tdata (abfd)->known_eabi_attributes;
5350 size = 16; /* 'A' <size> "aeabi" 0x1 <size>. */
5351 for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++)
5352 size += eabi_attr_size (i, &attr[i]);
5354 for (list = elf32_arm_tdata (abfd)->other_eabi_attributes;
5357 size += eabi_attr_size (list->tag, &list->attr);
5363 write_uleb128 (bfd_byte *p, unsigned int val)
5378 /* Write attribute ATTR to butter P, and return a pointer to the following
5381 write_eabi_attribute (bfd_byte *p, int tag, aeabi_attribute *attr)
5383 /* Suppress default entries. */
5384 if (is_default_attr(attr))
5387 p = write_uleb128 (p, tag);
5389 p = write_uleb128 (p, attr->i);
5394 len = strlen (attr->s) + 1;
5395 memcpy (p, attr->s, len);
5402 /* Write the contents of the eabi attributes section to p. */
5404 elf32_arm_set_eabi_attr_contents (bfd *abfd, bfd_byte *contents, bfd_vma size)
5407 aeabi_attribute *attr;
5408 aeabi_attribute_list *list;
5413 bfd_put_32 (abfd, size - 1, p);
5415 memcpy (p, "aeabi", 6);
5418 bfd_put_32 (abfd, size - 11, p);
5421 attr = elf32_arm_tdata (abfd)->known_eabi_attributes;
5422 for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++)
5423 p = write_eabi_attribute (p, i, &attr[i]);
5425 for (list = elf32_arm_tdata (abfd)->other_eabi_attributes;
5428 p = write_eabi_attribute (p, list->tag, &list->attr);
5431 /* Override final_link to handle EABI object attribute sections. */
5434 elf32_arm_bfd_final_link (bfd *abfd, struct bfd_link_info *info)
5437 struct bfd_link_order *p;
5438 asection *attr_section = NULL;
5442 /* elf32_arm_merge_private_bfd_data will already have merged the
5443 object attributes. Remove the input sections from the link, and set
5444 the contents of the output secton. */
5445 for (o = abfd->sections; o != NULL; o = o->next)
5447 if (strcmp (o->name, ".ARM.attributes") == 0)
5449 for (p = o->map_head.link_order; p != NULL; p = p->next)
5451 asection *input_section;
5453 if (p->type != bfd_indirect_link_order)
5455 input_section = p->u.indirect.section;
5456 /* Hack: reset the SEC_HAS_CONTENTS flag so that
5457 elf_link_input_bfd ignores this section. */
5458 input_section->flags &= ~SEC_HAS_CONTENTS;
5461 size = elf32_arm_eabi_attr_size (abfd);
5462 bfd_set_section_size (abfd, o, size);
5464 /* Skip this section later on. */
5465 o->map_head.link_order = NULL;
5468 /* Invoke the ELF linker to do all the work. */
5469 if (!bfd_elf_final_link (abfd, info))
5474 contents = bfd_malloc(size);
5475 if (contents == NULL)
5477 elf32_arm_set_eabi_attr_contents (abfd, contents, size);
5478 bfd_set_section_contents (abfd, attr_section, contents, 0, size);
5485 /* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
5487 arm_add_to_rel (bfd * abfd,
5489 reloc_howto_type * howto,
5490 bfd_signed_vma increment)
5492 bfd_signed_vma addend;
5494 if (howto->type == R_ARM_THM_CALL)
5496 int upper_insn, lower_insn;
5499 upper_insn = bfd_get_16 (abfd, address);
5500 lower_insn = bfd_get_16 (abfd, address + 2);
5501 upper = upper_insn & 0x7ff;
5502 lower = lower_insn & 0x7ff;
5504 addend = (upper << 12) | (lower << 1);
5505 addend += increment;
5508 upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
5509 lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
5511 bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
5512 bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
5518 contents = bfd_get_32 (abfd, address);
5520 /* Get the (signed) value from the instruction. */
5521 addend = contents & howto->src_mask;
5522 if (addend & ((howto->src_mask + 1) >> 1))
5524 bfd_signed_vma mask;
5527 mask &= ~ howto->src_mask;
5531 /* Add in the increment, (which is a byte value). */
5532 switch (howto->type)
5535 addend += increment;
5542 addend <<= howto->size;
5543 addend += increment;
5545 /* Should we check for overflow here ? */
5547 /* Drop any undesired bits. */
5548 addend >>= howto->rightshift;
5552 contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
5554 bfd_put_32 (abfd, contents, address);
5558 #define IS_ARM_TLS_RELOC(R_TYPE) \
5559 ((R_TYPE) == R_ARM_TLS_GD32 \
5560 || (R_TYPE) == R_ARM_TLS_LDO32 \
5561 || (R_TYPE) == R_ARM_TLS_LDM32 \
5562 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
5563 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
5564 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
5565 || (R_TYPE) == R_ARM_TLS_LE32 \
5566 || (R_TYPE) == R_ARM_TLS_IE32)
5568 /* Relocate an ARM ELF section. */
5570 elf32_arm_relocate_section (bfd * output_bfd,
5571 struct bfd_link_info * info,
5573 asection * input_section,
5574 bfd_byte * contents,
5575 Elf_Internal_Rela * relocs,
5576 Elf_Internal_Sym * local_syms,
5577 asection ** local_sections)
5579 Elf_Internal_Shdr *symtab_hdr;
5580 struct elf_link_hash_entry **sym_hashes;
5581 Elf_Internal_Rela *rel;
5582 Elf_Internal_Rela *relend;
5584 struct elf32_arm_link_hash_table * globals;
5586 globals = elf32_arm_hash_table (info);
5587 if (info->relocatable && !globals->use_rel)
5590 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
5591 sym_hashes = elf_sym_hashes (input_bfd);
5594 relend = relocs + input_section->reloc_count;
5595 for (; rel < relend; rel++)
5598 reloc_howto_type * howto;
5599 unsigned long r_symndx;
5600 Elf_Internal_Sym * sym;
5602 struct elf_link_hash_entry * h;
5604 bfd_reloc_status_type r;
5607 bfd_boolean unresolved_reloc = FALSE;
5609 r_symndx = ELF32_R_SYM (rel->r_info);
5610 r_type = ELF32_R_TYPE (rel->r_info);
5611 r_type = arm_real_reloc_type (globals, r_type);
5613 if ( r_type == R_ARM_GNU_VTENTRY
5614 || r_type == R_ARM_GNU_VTINHERIT)
5617 bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
5618 howto = bfd_reloc.howto;
5620 if (info->relocatable && globals->use_rel)
5622 /* This is a relocatable link. We don't have to change
5623 anything, unless the reloc is against a section symbol,
5624 in which case we have to adjust according to where the
5625 section symbol winds up in the output section. */
5626 if (r_symndx < symtab_hdr->sh_info)
5628 sym = local_syms + r_symndx;
5629 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
5631 sec = local_sections[r_symndx];
5632 arm_add_to_rel (input_bfd, contents + rel->r_offset,
5634 (bfd_signed_vma) (sec->output_offset
5642 /* This is a final link. */
5647 if (r_symndx < symtab_hdr->sh_info)
5649 sym = local_syms + r_symndx;
5650 sym_type = ELF32_ST_TYPE (sym->st_info);
5651 sec = local_sections[r_symndx];
5652 if (globals->use_rel)
5654 relocation = (sec->output_section->vma
5655 + sec->output_offset
5657 if ((sec->flags & SEC_MERGE)
5658 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
5661 bfd_vma addend, value;
5663 if (howto->rightshift)
5665 (*_bfd_error_handler)
5666 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
5667 input_bfd, input_section,
5668 (long) rel->r_offset, howto->name);
5672 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
5674 /* Get the (signed) value from the instruction. */
5675 addend = value & howto->src_mask;
5676 if (addend & ((howto->src_mask + 1) >> 1))
5678 bfd_signed_vma mask;
5681 mask &= ~ howto->src_mask;
5686 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
5688 addend += msec->output_section->vma + msec->output_offset;
5689 value = (value & ~ howto->dst_mask) | (addend & howto->dst_mask);
5690 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
5694 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
5700 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5701 r_symndx, symtab_hdr, sym_hashes,
5703 unresolved_reloc, warned);
5709 name = h->root.root.string;
5712 name = (bfd_elf_string_from_elf_section
5713 (input_bfd, symtab_hdr->sh_link, sym->st_name));
5714 if (name == NULL || *name == '\0')
5715 name = bfd_section_name (input_bfd, sec);
5719 && r_type != R_ARM_NONE
5721 || h->root.type == bfd_link_hash_defined
5722 || h->root.type == bfd_link_hash_defweak)
5723 && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
5725 (*_bfd_error_handler)
5726 ((sym_type == STT_TLS
5727 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
5728 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
5731 (long) rel->r_offset,
5736 r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
5737 input_section, contents, rel,
5738 relocation, info, sec, name,
5739 (h ? ELF_ST_TYPE (h->type) :
5740 ELF_ST_TYPE (sym->st_info)), h,
5743 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
5744 because such sections are not SEC_ALLOC and thus ld.so will
5745 not process them. */
5746 if (unresolved_reloc
5747 && !((input_section->flags & SEC_DEBUGGING) != 0
5750 (*_bfd_error_handler)
5751 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
5754 (long) rel->r_offset,
5756 h->root.root.string);
5760 if (r != bfd_reloc_ok)
5762 const char * msg = (const char *) 0;
5766 case bfd_reloc_overflow:
5767 /* If the overflowing reloc was to an undefined symbol,
5768 we have already printed one error message and there
5769 is no point complaining again. */
5771 h->root.type != bfd_link_hash_undefined)
5772 && (!((*info->callbacks->reloc_overflow)
5773 (info, (h ? &h->root : NULL), name, howto->name,
5774 (bfd_vma) 0, input_bfd, input_section,
5779 case bfd_reloc_undefined:
5780 if (!((*info->callbacks->undefined_symbol)
5781 (info, name, input_bfd, input_section,
5782 rel->r_offset, TRUE)))
5786 case bfd_reloc_outofrange:
5787 msg = _("internal error: out of range error");
5790 case bfd_reloc_notsupported:
5791 msg = _("internal error: unsupported relocation error");
5794 case bfd_reloc_dangerous:
5795 msg = _("internal error: dangerous error");
5799 msg = _("internal error: unknown error");
5803 if (!((*info->callbacks->warning)
5804 (info, msg, name, input_bfd, input_section,
5815 /* Allocate/find an object attribute. */
5816 static aeabi_attribute *
5817 elf32_arm_new_eabi_attr (bfd *abfd, int tag)
5819 aeabi_attribute *attr;
5820 aeabi_attribute_list *list;
5821 aeabi_attribute_list *p;
5822 aeabi_attribute_list **lastp;
5825 if (tag < NUM_KNOWN_ATTRIBUTES)
5827 /* Knwon tags are preallocated. */
5828 attr = &elf32_arm_tdata (abfd)->known_eabi_attributes[tag];
5832 /* Create a new tag. */
5833 list = (aeabi_attribute_list *)
5834 bfd_alloc (abfd, sizeof (aeabi_attribute_list));
5835 memset (list, 0, sizeof (aeabi_attribute_list));
5837 /* Keep the tag list in order. */
5838 lastp = &elf32_arm_tdata (abfd)->other_eabi_attributes;
5839 for (p = *lastp; p; p = p->next)
5845 list->next = *lastp;
5854 elf32_arm_get_eabi_attr_int (bfd *abfd, int tag)
5856 aeabi_attribute_list *p;
5858 if (tag < NUM_KNOWN_ATTRIBUTES)
5860 /* Knwon tags are preallocated. */
5861 return elf32_arm_tdata (abfd)->known_eabi_attributes[tag].i;
5865 for (p = elf32_arm_tdata (abfd)->other_eabi_attributes;
5879 elf32_arm_add_eabi_attr_int (bfd *abfd, int tag, unsigned int i)
5881 aeabi_attribute *attr;
5883 attr = elf32_arm_new_eabi_attr (abfd, tag);
5889 attr_strdup (bfd *abfd, const char * s)
5894 len = strlen (s) + 1;
5895 p = (char *)bfd_alloc(abfd, len);
5896 return memcpy (p, s, len);
5900 elf32_arm_add_eabi_attr_string (bfd *abfd, int tag, const char *s)
5902 aeabi_attribute *attr;
5904 attr = elf32_arm_new_eabi_attr (abfd, tag);
5906 attr->s = attr_strdup (abfd, s);
5910 elf32_arm_add_eabi_attr_compat (bfd *abfd, unsigned int i, const char *s)
5912 aeabi_attribute_list *list;
5913 aeabi_attribute_list *p;
5914 aeabi_attribute_list **lastp;
5916 list = (aeabi_attribute_list *)
5917 bfd_alloc (abfd, sizeof (aeabi_attribute_list));
5918 memset (list, 0, sizeof (aeabi_attribute_list));
5919 list->tag = Tag_compatibility;
5920 list->attr.type = 3;
5922 list->attr.s = attr_strdup (abfd, s);
5924 lastp = &elf32_arm_tdata (abfd)->other_eabi_attributes;
5925 for (p = *lastp; p; p = p->next)
5928 if (p->tag != Tag_compatibility)
5930 cmp = strcmp(s, p->attr.s);
5931 if (cmp < 0 || (cmp == 0 && i < p->attr.i))
5935 list->next = *lastp;
5939 /* Set the right machine number. */
5942 elf32_arm_object_p (bfd *abfd)
5946 mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
5948 if (mach != bfd_mach_arm_unknown)
5949 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
5951 else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
5952 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
5955 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
5960 /* Function to keep ARM specific flags in the ELF header. */
5963 elf32_arm_set_private_flags (bfd *abfd, flagword flags)
5965 if (elf_flags_init (abfd)
5966 && elf_elfheader (abfd)->e_flags != flags)
5968 if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
5970 if (flags & EF_ARM_INTERWORK)
5971 (*_bfd_error_handler)
5972 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
5976 (_("Warning: Clearing the interworking flag of %B due to outside request"),
5982 elf_elfheader (abfd)->e_flags = flags;
5983 elf_flags_init (abfd) = TRUE;
5989 /* Copy the eabi object attribute from IBFD to OBFD. */
5991 copy_eabi_attributes (bfd *ibfd, bfd *obfd)
5993 aeabi_attribute *in_attr;
5994 aeabi_attribute *out_attr;
5995 aeabi_attribute_list *list;
5998 in_attr = elf32_arm_tdata (ibfd)->known_eabi_attributes;
5999 out_attr = elf32_arm_tdata (obfd)->known_eabi_attributes;
6000 for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++)
6002 out_attr->i = in_attr->i;
6003 if (in_attr->s && *in_attr->s)
6004 out_attr->s = attr_strdup (obfd, in_attr->s);
6009 for (list = elf32_arm_tdata (ibfd)->other_eabi_attributes;
6013 in_attr = &list->attr;
6014 switch (in_attr->type)
6017 elf32_arm_add_eabi_attr_int (obfd, list->tag, in_attr->i);
6020 elf32_arm_add_eabi_attr_string (obfd, list->tag, in_attr->s);
6023 elf32_arm_add_eabi_attr_compat (obfd, in_attr->i, in_attr->s);
6032 /* Copy backend specific data from one object module to another. */
6035 elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
6040 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
6041 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
6044 in_flags = elf_elfheader (ibfd)->e_flags;
6045 out_flags = elf_elfheader (obfd)->e_flags;
6047 if (elf_flags_init (obfd)
6048 && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
6049 && in_flags != out_flags)
6051 /* Cannot mix APCS26 and APCS32 code. */
6052 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
6055 /* Cannot mix float APCS and non-float APCS code. */
6056 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
6059 /* If the src and dest have different interworking flags
6060 then turn off the interworking bit. */
6061 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
6063 if (out_flags & EF_ARM_INTERWORK)
6065 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
6068 in_flags &= ~EF_ARM_INTERWORK;
6071 /* Likewise for PIC, though don't warn for this case. */
6072 if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
6073 in_flags &= ~EF_ARM_PIC;
6076 elf_elfheader (obfd)->e_flags = in_flags;
6077 elf_flags_init (obfd) = TRUE;
6079 /* Also copy the EI_OSABI field. */
6080 elf_elfheader (obfd)->e_ident[EI_OSABI] =
6081 elf_elfheader (ibfd)->e_ident[EI_OSABI];
6083 /* Copy EABI object attributes. */
6084 copy_eabi_attributes (ibfd, obfd);
6089 /* Values for Tag_ABI_PCS_R9_use. */
6098 /* Values for Tag_ABI_PCS_RW_data. */
6101 AEABI_PCS_RW_data_absolute,
6102 AEABI_PCS_RW_data_PCrel,
6103 AEABI_PCS_RW_data_SBrel,
6104 AEABI_PCS_RW_data_unused
6107 /* Values for Tag_ABI_enum_size. */
6113 AEABI_enum_forced_wide
6116 /* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
6117 are conflicting attributes. */
6119 elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
6121 aeabi_attribute *in_attr;
6122 aeabi_attribute *out_attr;
6123 aeabi_attribute_list *in_list;
6124 aeabi_attribute_list *out_list;
6125 /* Some tags have 0 = don't care, 1 = strong requirement,
6126 2 = weak requirement. */
6127 static const int order_312[3] = {3, 1, 2};
6130 if (!elf32_arm_tdata (ibfd)->known_eabi_attributes[0].i)
6132 /* This is the first object. Copy the attributes. */
6133 copy_eabi_attributes (ibfd, obfd);
6137 /* Use the Tag_null value to indicate the attributes have been
6139 elf32_arm_tdata (ibfd)->known_eabi_attributes[0].i = 1;
6141 in_attr = elf32_arm_tdata (ibfd)->known_eabi_attributes;
6142 out_attr = elf32_arm_tdata (obfd)->known_eabi_attributes;
6143 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
6144 if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i)
6146 /* Ignore mismatches if teh object doesn't use floating point. */
6147 if (out_attr[Tag_ABI_FP_number_model].i == 0)
6148 out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i;
6149 else if (in_attr[Tag_ABI_FP_number_model].i != 0)
6152 (_("ERROR: %B uses VFP register arguments, %B does not"),
6158 for (i = 4; i < NUM_KNOWN_ATTRIBUTES; i++)
6160 /* Merge this attribute with existing attributes. */
6163 case Tag_CPU_raw_name:
6165 /* Use whichever has the greatest architecture requirements. */
6166 if (in_attr[Tag_CPU_arch].i > out_attr[Tag_CPU_arch].i)
6167 out_attr[i].s = attr_strdup(obfd, in_attr[i].s);
6170 case Tag_ABI_optimization_goals:
6171 case Tag_ABI_FP_optimization_goals:
6172 /* Use the first value seen. */
6176 case Tag_ARM_ISA_use:
6177 case Tag_THUMB_ISA_use:
6181 /* ??? Do NEON and WMMX conflict? */
6182 case Tag_ABI_FP_rounding:
6183 case Tag_ABI_FP_denormal:
6184 case Tag_ABI_FP_exceptions:
6185 case Tag_ABI_FP_user_exceptions:
6186 case Tag_ABI_FP_number_model:
6187 case Tag_ABI_align8_preserved:
6188 case Tag_ABI_HardFP_use:
6189 /* Use the largest value specified. */
6190 if (in_attr[i].i > out_attr[i].i)
6191 out_attr[i].i = in_attr[i].i;
6194 case Tag_CPU_arch_profile:
6195 /* Warn if conflicting architecture profiles used. */
6196 if (out_attr[i].i && in_attr[i].i && in_attr[i].i != out_attr[i].i)
6199 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
6200 ibfd, in_attr[i].i, out_attr[i].i);
6204 out_attr[i].i = in_attr[i].i;
6206 case Tag_PCS_config:
6207 if (out_attr[i].i == 0)
6208 out_attr[i].i = in_attr[i].i;
6209 else if (in_attr[i].i != 0 && out_attr[i].i != 0)
6211 /* It's sometimes ok to mix different configs, so this is only
6214 (_("Warning: %B: Conflicting platform configuration"), ibfd);
6217 case Tag_ABI_PCS_R9_use:
6218 if (out_attr[i].i != AEABI_R9_unused
6219 && in_attr[i].i != AEABI_R9_unused)
6222 (_("ERROR: %B: Conflicting use of R9"), ibfd);
6225 if (out_attr[i].i == AEABI_R9_unused)
6226 out_attr[i].i = in_attr[i].i;
6228 case Tag_ABI_PCS_RW_data:
6229 if (in_attr[i].i == AEABI_PCS_RW_data_SBrel
6230 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB
6231 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused)
6234 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
6238 /* Use the smallest value specified. */
6239 if (in_attr[i].i < out_attr[i].i)
6240 out_attr[i].i = in_attr[i].i;
6242 case Tag_ABI_PCS_RO_data:
6243 /* Use the smallest value specified. */
6244 if (in_attr[i].i < out_attr[i].i)
6245 out_attr[i].i = in_attr[i].i;
6247 case Tag_ABI_PCS_GOT_use:
6248 if (in_attr[i].i > 2 || out_attr[i].i > 2
6249 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
6250 out_attr[i].i = in_attr[i].i;
6252 case Tag_ABI_PCS_wchar_t:
6253 if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i)
6256 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd);
6260 out_attr[i].i = in_attr[i].i;
6262 case Tag_ABI_align8_needed:
6263 /* ??? Check against Tag_ABI_align8_preserved. */
6264 if (in_attr[i].i > 2 || out_attr[i].i > 2
6265 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
6266 out_attr[i].i = in_attr[i].i;
6268 case Tag_ABI_enum_size:
6269 if (in_attr[i].i != AEABI_enum_unused)
6271 if (out_attr[i].i == AEABI_enum_unused
6272 || out_attr[i].i == AEABI_enum_forced_wide)
6274 /* The existing object is compatible with anything.
6275 Use whatever requirements the new object has. */
6276 out_attr[i].i = in_attr[i].i;
6278 else if (in_attr[i].i != AEABI_enum_forced_wide
6279 && out_attr[i].i != in_attr[i].i)
6282 (_("ERROR: %B: Conflicting enum sizes"), ibfd);
6286 case Tag_ABI_VFP_args:
6289 case Tag_ABI_WMMX_args:
6290 if (in_attr[i].i != out_attr[i].i)
6293 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
6298 default: /* All known attributes should be explicitly covered. */
6303 in_list = elf32_arm_tdata (ibfd)->other_eabi_attributes;
6304 out_list = elf32_arm_tdata (ibfd)->other_eabi_attributes;
6305 while (in_list && in_list->tag == Tag_compatibility)
6307 in_attr = &in_list->attr;
6308 if (in_attr->i == 0)
6310 if (in_attr->i == 1)
6313 (_("ERROR: %B: Must be processed by '%s' toolchain"),
6317 if (!out_list || out_list->tag != Tag_compatibility
6318 || strcmp (in_attr->s, out_list->attr.s) != 0)
6320 /* Add this compatibility tag to the output. */
6321 elf32_arm_add_eabi_attr_compat (obfd, in_attr->i, in_attr->s);
6324 out_attr = &out_list->attr;
6325 /* Check all the input tags with the same identifier. */
6328 if (out_list->tag != Tag_compatibility
6329 || in_attr->i != out_attr->i
6330 || strcmp (in_attr->s, out_attr->s) != 0)
6333 (_("ERROR: %B: Incompatible object tag '%s':%d"),
6334 ibfd, in_attr->s, in_attr->i);
6337 in_list = in_list->next;
6338 if (in_list->tag != Tag_compatibility
6339 || strcmp (in_attr->s, in_list->attr.s) != 0)
6341 in_attr = &in_list->attr;
6342 out_list = out_list->next;
6344 out_attr = &out_list->attr;
6347 /* Check the output doesn't have extra tags with this identifier. */
6348 if (out_list && out_list->tag == Tag_compatibility
6349 && strcmp (in_attr->s, out_list->attr.s) == 0)
6352 (_("ERROR: %B: Incompatible object tag '%s':%d"),
6353 ibfd, in_attr->s, out_list->attr.i);
6358 for (; in_list; in_list = in_list->next)
6360 if ((in_list->tag & 128) < 64)
6363 (_("Warning: %B: Unknown EABI object attribute %d"),
6364 ibfd, in_list->tag);
6372 /* Return TRUE if the two EABI versions are incompatible. */
6375 elf32_arm_versions_compatible (unsigned iver, unsigned over)
6377 /* v4 and v5 are the same spec before and after it was released,
6378 so allow mixing them. */
6379 if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5)
6380 || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4))
6383 return (iver == over);
6386 /* Merge backend specific data from an object file to the output
6387 object file when linking. */
6390 elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
6394 bfd_boolean flags_compatible = TRUE;
6397 /* Check if we have the same endianess. */
6398 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
6401 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
6402 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
6405 if (!elf32_arm_merge_eabi_attributes (ibfd, obfd))
6408 /* The input BFD must have had its flags initialised. */
6409 /* The following seems bogus to me -- The flags are initialized in
6410 the assembler but I don't think an elf_flags_init field is
6411 written into the object. */
6412 /* BFD_ASSERT (elf_flags_init (ibfd)); */
6414 in_flags = elf_elfheader (ibfd)->e_flags;
6415 out_flags = elf_elfheader (obfd)->e_flags;
6417 if (!elf_flags_init (obfd))
6419 /* If the input is the default architecture and had the default
6420 flags then do not bother setting the flags for the output
6421 architecture, instead allow future merges to do this. If no
6422 future merges ever set these flags then they will retain their
6423 uninitialised values, which surprise surprise, correspond
6424 to the default values. */
6425 if (bfd_get_arch_info (ibfd)->the_default
6426 && elf_elfheader (ibfd)->e_flags == 0)
6429 elf_flags_init (obfd) = TRUE;
6430 elf_elfheader (obfd)->e_flags = in_flags;
6432 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
6433 && bfd_get_arch_info (obfd)->the_default)
6434 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
6439 /* Determine what should happen if the input ARM architecture
6440 does not match the output ARM architecture. */
6441 if (! bfd_arm_merge_machines (ibfd, obfd))
6444 /* Identical flags must be compatible. */
6445 if (in_flags == out_flags)
6448 /* Check to see if the input BFD actually contains any sections. If
6449 not, its flags may not have been initialised either, but it
6450 cannot actually cause any incompatiblity. Do not short-circuit
6451 dynamic objects; their section list may be emptied by
6452 elf_link_add_object_symbols.
6454 Also check to see if there are no code sections in the input.
6455 In this case there is no need to check for code specific flags.
6456 XXX - do we need to worry about floating-point format compatability
6457 in data sections ? */
6458 if (!(ibfd->flags & DYNAMIC))
6460 bfd_boolean null_input_bfd = TRUE;
6461 bfd_boolean only_data_sections = TRUE;
6463 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
6465 /* Ignore synthetic glue sections. */
6466 if (strcmp (sec->name, ".glue_7")
6467 && strcmp (sec->name, ".glue_7t"))
6469 if ((bfd_get_section_flags (ibfd, sec)
6470 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6471 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
6472 only_data_sections = FALSE;
6474 null_input_bfd = FALSE;
6479 if (null_input_bfd || only_data_sections)
6483 /* Complain about various flag mismatches. */
6484 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags),
6485 EF_ARM_EABI_VERSION (out_flags)))
6488 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
6490 (in_flags & EF_ARM_EABIMASK) >> 24,
6491 (out_flags & EF_ARM_EABIMASK) >> 24);
6495 /* Not sure what needs to be checked for EABI versions >= 1. */
6496 /* VxWorks libraries do not use these flags. */
6497 if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed
6498 && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed
6499 && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
6501 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
6504 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
6506 in_flags & EF_ARM_APCS_26 ? 26 : 32,
6507 out_flags & EF_ARM_APCS_26 ? 26 : 32);
6508 flags_compatible = FALSE;
6511 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
6513 if (in_flags & EF_ARM_APCS_FLOAT)
6515 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
6519 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
6522 flags_compatible = FALSE;
6525 if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
6527 if (in_flags & EF_ARM_VFP_FLOAT)
6529 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
6533 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
6536 flags_compatible = FALSE;
6539 if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
6541 if (in_flags & EF_ARM_MAVERICK_FLOAT)
6543 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
6547 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
6550 flags_compatible = FALSE;
6553 #ifdef EF_ARM_SOFT_FLOAT
6554 if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
6556 /* We can allow interworking between code that is VFP format
6557 layout, and uses either soft float or integer regs for
6558 passing floating point arguments and results. We already
6559 know that the APCS_FLOAT flags match; similarly for VFP
6561 if ((in_flags & EF_ARM_APCS_FLOAT) != 0
6562 || (in_flags & EF_ARM_VFP_FLOAT) == 0)
6564 if (in_flags & EF_ARM_SOFT_FLOAT)
6566 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
6570 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
6573 flags_compatible = FALSE;
6578 /* Interworking mismatch is only a warning. */
6579 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
6581 if (in_flags & EF_ARM_INTERWORK)
6584 (_("Warning: %B supports interworking, whereas %B does not"),
6590 (_("Warning: %B does not support interworking, whereas %B does"),
6596 return flags_compatible;
6599 /* Display the flags field. */
6602 elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
6604 FILE * file = (FILE *) ptr;
6605 unsigned long flags;
6607 BFD_ASSERT (abfd != NULL && ptr != NULL);
6609 /* Print normal ELF private data. */
6610 _bfd_elf_print_private_bfd_data (abfd, ptr);
6612 flags = elf_elfheader (abfd)->e_flags;
6613 /* Ignore init flag - it may not be set, despite the flags field
6614 containing valid data. */
6616 /* xgettext:c-format */
6617 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
6619 switch (EF_ARM_EABI_VERSION (flags))
6621 case EF_ARM_EABI_UNKNOWN:
6622 /* The following flag bits are GNU extensions and not part of the
6623 official ARM ELF extended ABI. Hence they are only decoded if
6624 the EABI version is not set. */
6625 if (flags & EF_ARM_INTERWORK)
6626 fprintf (file, _(" [interworking enabled]"));
6628 if (flags & EF_ARM_APCS_26)
6629 fprintf (file, " [APCS-26]");
6631 fprintf (file, " [APCS-32]");
6633 if (flags & EF_ARM_VFP_FLOAT)
6634 fprintf (file, _(" [VFP float format]"));
6635 else if (flags & EF_ARM_MAVERICK_FLOAT)
6636 fprintf (file, _(" [Maverick float format]"));
6638 fprintf (file, _(" [FPA float format]"));
6640 if (flags & EF_ARM_APCS_FLOAT)
6641 fprintf (file, _(" [floats passed in float registers]"));
6643 if (flags & EF_ARM_PIC)
6644 fprintf (file, _(" [position independent]"));
6646 if (flags & EF_ARM_NEW_ABI)
6647 fprintf (file, _(" [new ABI]"));
6649 if (flags & EF_ARM_OLD_ABI)
6650 fprintf (file, _(" [old ABI]"));
6652 if (flags & EF_ARM_SOFT_FLOAT)
6653 fprintf (file, _(" [software FP]"));
6655 flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
6656 | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
6657 | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
6658 | EF_ARM_MAVERICK_FLOAT);
6661 case EF_ARM_EABI_VER1:
6662 fprintf (file, _(" [Version1 EABI]"));
6664 if (flags & EF_ARM_SYMSARESORTED)
6665 fprintf (file, _(" [sorted symbol table]"));
6667 fprintf (file, _(" [unsorted symbol table]"));
6669 flags &= ~ EF_ARM_SYMSARESORTED;
6672 case EF_ARM_EABI_VER2:
6673 fprintf (file, _(" [Version2 EABI]"));
6675 if (flags & EF_ARM_SYMSARESORTED)
6676 fprintf (file, _(" [sorted symbol table]"));
6678 fprintf (file, _(" [unsorted symbol table]"));
6680 if (flags & EF_ARM_DYNSYMSUSESEGIDX)
6681 fprintf (file, _(" [dynamic symbols use segment index]"));
6683 if (flags & EF_ARM_MAPSYMSFIRST)
6684 fprintf (file, _(" [mapping symbols precede others]"));
6686 flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
6687 | EF_ARM_MAPSYMSFIRST);
6690 case EF_ARM_EABI_VER3:
6691 fprintf (file, _(" [Version3 EABI]"));
6694 case EF_ARM_EABI_VER4:
6695 fprintf (file, _(" [Version4 EABI]"));
6698 case EF_ARM_EABI_VER5:
6699 fprintf (file, _(" [Version5 EABI]"));
6701 if (flags & EF_ARM_BE8)
6702 fprintf (file, _(" [BE8]"));
6704 if (flags & EF_ARM_LE8)
6705 fprintf (file, _(" [LE8]"));
6707 flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
6711 fprintf (file, _(" <EABI version unrecognised>"));
6715 flags &= ~ EF_ARM_EABIMASK;
6717 if (flags & EF_ARM_RELEXEC)
6718 fprintf (file, _(" [relocatable executable]"));
6720 if (flags & EF_ARM_HASENTRY)
6721 fprintf (file, _(" [has entry point]"));
6723 flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
6726 fprintf (file, _("<Unrecognised flag bits set>"));
6734 elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
6736 switch (ELF_ST_TYPE (elf_sym->st_info))
6739 return ELF_ST_TYPE (elf_sym->st_info);
6742 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
6743 This allows us to distinguish between data used by Thumb instructions
6744 and non-data (which is probably code) inside Thumb regions of an
6746 if (type != STT_OBJECT && type != STT_TLS)
6747 return ELF_ST_TYPE (elf_sym->st_info);
6758 elf32_arm_gc_mark_hook (asection *sec,
6759 struct bfd_link_info *info,
6760 Elf_Internal_Rela *rel,
6761 struct elf_link_hash_entry *h,
6762 Elf_Internal_Sym *sym)
6765 switch (ELF32_R_TYPE (rel->r_info))
6767 case R_ARM_GNU_VTINHERIT:
6768 case R_ARM_GNU_VTENTRY:
6772 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
6775 /* Update the got entry reference counts for the section being removed. */
6778 elf32_arm_gc_sweep_hook (bfd * abfd,
6779 struct bfd_link_info * info,
6781 const Elf_Internal_Rela * relocs)
6783 Elf_Internal_Shdr *symtab_hdr;
6784 struct elf_link_hash_entry **sym_hashes;
6785 bfd_signed_vma *local_got_refcounts;
6786 const Elf_Internal_Rela *rel, *relend;
6787 struct elf32_arm_link_hash_table * globals;
6789 globals = elf32_arm_hash_table (info);
6791 elf_section_data (sec)->local_dynrel = NULL;
6793 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6794 sym_hashes = elf_sym_hashes (abfd);
6795 local_got_refcounts = elf_local_got_refcounts (abfd);
6797 relend = relocs + sec->reloc_count;
6798 for (rel = relocs; rel < relend; rel++)
6800 unsigned long r_symndx;
6801 struct elf_link_hash_entry *h = NULL;
6804 r_symndx = ELF32_R_SYM (rel->r_info);
6805 if (r_symndx >= symtab_hdr->sh_info)
6807 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6808 while (h->root.type == bfd_link_hash_indirect
6809 || h->root.type == bfd_link_hash_warning)
6810 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6813 r_type = ELF32_R_TYPE (rel->r_info);
6814 r_type = arm_real_reloc_type (globals, r_type);
6818 case R_ARM_GOT_PREL:
6819 case R_ARM_TLS_GD32:
6820 case R_ARM_TLS_IE32:
6823 if (h->got.refcount > 0)
6824 h->got.refcount -= 1;
6826 else if (local_got_refcounts != NULL)
6828 if (local_got_refcounts[r_symndx] > 0)
6829 local_got_refcounts[r_symndx] -= 1;
6833 case R_ARM_TLS_LDM32:
6834 elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1;
6838 case R_ARM_ABS32_NOI:
6840 case R_ARM_REL32_NOI:
6846 case R_ARM_THM_CALL:
6847 case R_ARM_MOVW_ABS_NC:
6848 case R_ARM_MOVT_ABS:
6849 case R_ARM_MOVW_PREL_NC:
6850 case R_ARM_MOVT_PREL:
6851 case R_ARM_THM_MOVW_ABS_NC:
6852 case R_ARM_THM_MOVT_ABS:
6853 case R_ARM_THM_MOVW_PREL_NC:
6854 case R_ARM_THM_MOVT_PREL:
6855 /* Should the interworking branches be here also? */
6859 struct elf32_arm_link_hash_entry *eh;
6860 struct elf32_arm_relocs_copied **pp;
6861 struct elf32_arm_relocs_copied *p;
6863 eh = (struct elf32_arm_link_hash_entry *) h;
6865 if (h->plt.refcount > 0)
6867 h->plt.refcount -= 1;
6868 if (ELF32_R_TYPE (rel->r_info) == R_ARM_THM_CALL)
6869 eh->plt_thumb_refcount--;
6872 if (r_type == R_ARM_ABS32
6873 || r_type == R_ARM_REL32
6874 || r_type == R_ARM_ABS32_NOI
6875 || r_type == R_ARM_REL32_NOI)
6877 for (pp = &eh->relocs_copied; (p = *pp) != NULL;
6879 if (p->section == sec)
6882 if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32
6883 || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI)
6901 /* Look through the relocs for a section during the first phase. */
6904 elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
6905 asection *sec, const Elf_Internal_Rela *relocs)
6907 Elf_Internal_Shdr *symtab_hdr;
6908 struct elf_link_hash_entry **sym_hashes;
6909 struct elf_link_hash_entry **sym_hashes_end;
6910 const Elf_Internal_Rela *rel;
6911 const Elf_Internal_Rela *rel_end;
6914 bfd_vma *local_got_offsets;
6915 struct elf32_arm_link_hash_table *htab;
6917 if (info->relocatable)
6920 htab = elf32_arm_hash_table (info);
6923 /* Create dynamic sections for relocatable executables so that we can
6924 copy relocations. */
6925 if (htab->root.is_relocatable_executable
6926 && ! htab->root.dynamic_sections_created)
6928 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
6932 dynobj = elf_hash_table (info)->dynobj;
6933 local_got_offsets = elf_local_got_offsets (abfd);
6935 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6936 sym_hashes = elf_sym_hashes (abfd);
6937 sym_hashes_end = sym_hashes
6938 + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
6940 if (!elf_bad_symtab (abfd))
6941 sym_hashes_end -= symtab_hdr->sh_info;
6943 rel_end = relocs + sec->reloc_count;
6944 for (rel = relocs; rel < rel_end; rel++)
6946 struct elf_link_hash_entry *h;
6947 struct elf32_arm_link_hash_entry *eh;
6948 unsigned long r_symndx;
6951 r_symndx = ELF32_R_SYM (rel->r_info);
6952 r_type = ELF32_R_TYPE (rel->r_info);
6953 r_type = arm_real_reloc_type (htab, r_type);
6955 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
6957 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
6962 if (r_symndx < symtab_hdr->sh_info)
6966 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
6967 while (h->root.type == bfd_link_hash_indirect
6968 || h->root.type == bfd_link_hash_warning)
6969 h = (struct elf_link_hash_entry *) h->root.u.i.link;
6972 eh = (struct elf32_arm_link_hash_entry *) h;
6977 case R_ARM_GOT_PREL:
6978 case R_ARM_TLS_GD32:
6979 case R_ARM_TLS_IE32:
6980 /* This symbol requires a global offset table entry. */
6982 int tls_type, old_tls_type;
6986 case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
6987 case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
6988 default: tls_type = GOT_NORMAL; break;
6994 old_tls_type = elf32_arm_hash_entry (h)->tls_type;
6998 bfd_signed_vma *local_got_refcounts;
7000 /* This is a global offset table entry for a local symbol. */
7001 local_got_refcounts = elf_local_got_refcounts (abfd);
7002 if (local_got_refcounts == NULL)
7006 size = symtab_hdr->sh_info;
7007 size *= (sizeof (bfd_signed_vma) + sizeof(char));
7008 local_got_refcounts = bfd_zalloc (abfd, size);
7009 if (local_got_refcounts == NULL)
7011 elf_local_got_refcounts (abfd) = local_got_refcounts;
7012 elf32_arm_local_got_tls_type (abfd)
7013 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
7015 local_got_refcounts[r_symndx] += 1;
7016 old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
7019 /* We will already have issued an error message if there is a
7020 TLS / non-TLS mismatch, based on the symbol type. We don't
7021 support any linker relaxations. So just combine any TLS
7023 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
7024 && tls_type != GOT_NORMAL)
7025 tls_type |= old_tls_type;
7027 if (old_tls_type != tls_type)
7030 elf32_arm_hash_entry (h)->tls_type = tls_type;
7032 elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
7037 case R_ARM_TLS_LDM32:
7038 if (r_type == R_ARM_TLS_LDM32)
7039 htab->tls_ldm_got.refcount++;
7042 case R_ARM_GOTOFF32:
7044 if (htab->sgot == NULL)
7046 if (htab->root.dynobj == NULL)
7047 htab->root.dynobj = abfd;
7048 if (!create_got_section (htab->root.dynobj, info))
7054 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
7055 ldr __GOTT_INDEX__ offsets. */
7056 if (!htab->vxworks_p)
7061 case R_ARM_ABS32_NOI:
7063 case R_ARM_REL32_NOI:
7069 case R_ARM_THM_CALL:
7070 case R_ARM_MOVW_ABS_NC:
7071 case R_ARM_MOVT_ABS:
7072 case R_ARM_MOVW_PREL_NC:
7073 case R_ARM_MOVT_PREL:
7074 case R_ARM_THM_MOVW_ABS_NC:
7075 case R_ARM_THM_MOVT_ABS:
7076 case R_ARM_THM_MOVW_PREL_NC:
7077 case R_ARM_THM_MOVT_PREL:
7078 /* Should the interworking branches be listed here? */
7081 /* If this reloc is in a read-only section, we might
7082 need a copy reloc. We can't check reliably at this
7083 stage whether the section is read-only, as input
7084 sections have not yet been mapped to output sections.
7085 Tentatively set the flag for now, and correct in
7086 adjust_dynamic_symbol. */
7090 /* We may need a .plt entry if the function this reloc
7091 refers to is in a different object. We can't tell for
7092 sure yet, because something later might force the
7094 if (r_type != R_ARM_ABS32
7095 && r_type != R_ARM_REL32
7096 && r_type != R_ARM_ABS32_NOI
7097 && r_type != R_ARM_REL32_NOI)
7100 /* If we create a PLT entry, this relocation will reference
7101 it, even if it's an ABS32 relocation. */
7102 h->plt.refcount += 1;
7104 if (r_type == R_ARM_THM_CALL)
7105 eh->plt_thumb_refcount += 1;
7108 /* If we are creating a shared library or relocatable executable,
7109 and this is a reloc against a global symbol, or a non PC
7110 relative reloc against a local symbol, then we need to copy
7111 the reloc into the shared library. However, if we are linking
7112 with -Bsymbolic, we do not need to copy a reloc against a
7113 global symbol which is defined in an object we are
7114 including in the link (i.e., DEF_REGULAR is set). At
7115 this point we have not seen all the input files, so it is
7116 possible that DEF_REGULAR is not set now but will be set
7117 later (it is never cleared). We account for that
7118 possibility below by storing information in the
7119 relocs_copied field of the hash table entry. */
7120 if ((info->shared || htab->root.is_relocatable_executable)
7121 && (sec->flags & SEC_ALLOC) != 0
7122 && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI)
7123 || (h != NULL && ! h->needs_plt
7124 && (! info->symbolic || ! h->def_regular))))
7126 struct elf32_arm_relocs_copied *p, **head;
7128 /* When creating a shared object, we must copy these
7129 reloc types into the output file. We create a reloc
7130 section in dynobj and make room for this reloc. */
7135 name = (bfd_elf_string_from_elf_section
7137 elf_elfheader (abfd)->e_shstrndx,
7138 elf_section_data (sec)->rel_hdr.sh_name));
7142 BFD_ASSERT (reloc_section_p (htab, name, sec));
7144 sreloc = bfd_get_section_by_name (dynobj, name);
7149 flags = (SEC_HAS_CONTENTS | SEC_READONLY
7150 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
7151 if ((sec->flags & SEC_ALLOC) != 0
7152 /* BPABI objects never have dynamic
7153 relocations mapped. */
7154 && !htab->symbian_p)
7155 flags |= SEC_ALLOC | SEC_LOAD;
7156 sreloc = bfd_make_section_with_flags (dynobj,
7160 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
7164 elf_section_data (sec)->sreloc = sreloc;
7167 /* If this is a global symbol, we count the number of
7168 relocations we need for this symbol. */
7171 head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied;
7175 /* Track dynamic relocs needed for local syms too.
7176 We really need local syms available to do this
7182 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
7187 vpp = &elf_section_data (s)->local_dynrel;
7188 head = (struct elf32_arm_relocs_copied **) vpp;
7192 if (p == NULL || p->section != sec)
7194 bfd_size_type amt = sizeof *p;
7196 p = bfd_alloc (htab->root.dynobj, amt);
7206 if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI)
7212 /* This relocation describes the C++ object vtable hierarchy.
7213 Reconstruct it for later use during GC. */
7214 case R_ARM_GNU_VTINHERIT:
7215 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
7219 /* This relocation describes which C++ vtable entries are actually
7220 used. Record for later use during GC. */
7221 case R_ARM_GNU_VTENTRY:
7222 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
7231 /* Treat mapping symbols as special target symbols. */
7234 elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
7236 return bfd_is_arm_special_symbol_name (sym->name,
7237 BFD_ARM_SPECIAL_SYM_TYPE_ANY);
7240 /* This is a copy of elf_find_function() from elf.c except that
7241 ARM mapping symbols are ignored when looking for function names
7242 and STT_ARM_TFUNC is considered to a function type. */
7245 arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
7249 const char ** filename_ptr,
7250 const char ** functionname_ptr)
7252 const char * filename = NULL;
7253 asymbol * func = NULL;
7254 bfd_vma low_func = 0;
7257 for (p = symbols; *p != NULL; p++)
7261 q = (elf_symbol_type *) *p;
7263 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
7268 filename = bfd_asymbol_name (&q->symbol);
7273 /* Skip mapping symbols. */
7274 if ((q->symbol.flags & BSF_LOCAL)
7275 && bfd_is_arm_special_symbol_name (q->symbol.name,
7276 BFD_ARM_SPECIAL_SYM_TYPE_ANY))
7279 if (bfd_get_section (&q->symbol) == section
7280 && q->symbol.value >= low_func
7281 && q->symbol.value <= offset)
7283 func = (asymbol *) q;
7284 low_func = q->symbol.value;
7294 *filename_ptr = filename;
7295 if (functionname_ptr)
7296 *functionname_ptr = bfd_asymbol_name (func);
7302 /* Find the nearest line to a particular section and offset, for error
7303 reporting. This code is a duplicate of the code in elf.c, except
7304 that it uses arm_elf_find_function. */
7307 elf32_arm_find_nearest_line (bfd * abfd,
7311 const char ** filename_ptr,
7312 const char ** functionname_ptr,
7313 unsigned int * line_ptr)
7315 bfd_boolean found = FALSE;
7317 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
7319 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
7320 filename_ptr, functionname_ptr,
7322 & elf_tdata (abfd)->dwarf2_find_line_info))
7324 if (!*functionname_ptr)
7325 arm_elf_find_function (abfd, section, symbols, offset,
7326 *filename_ptr ? NULL : filename_ptr,
7332 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
7333 & found, filename_ptr,
7334 functionname_ptr, line_ptr,
7335 & elf_tdata (abfd)->line_info))
7338 if (found && (*functionname_ptr || *line_ptr))
7341 if (symbols == NULL)
7344 if (! arm_elf_find_function (abfd, section, symbols, offset,
7345 filename_ptr, functionname_ptr))
7353 elf32_arm_find_inliner_info (bfd * abfd,
7354 const char ** filename_ptr,
7355 const char ** functionname_ptr,
7356 unsigned int * line_ptr)
7359 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
7360 functionname_ptr, line_ptr,
7361 & elf_tdata (abfd)->dwarf2_find_line_info);
7365 /* Adjust a symbol defined by a dynamic object and referenced by a
7366 regular object. The current definition is in some section of the
7367 dynamic object, but we're not including those sections. We have to
7368 change the definition to something the rest of the link can
7372 elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
7373 struct elf_link_hash_entry * h)
7377 unsigned int power_of_two;
7378 struct elf32_arm_link_hash_entry * eh;
7379 struct elf32_arm_link_hash_table *globals;
7381 globals = elf32_arm_hash_table (info);
7382 dynobj = elf_hash_table (info)->dynobj;
7384 /* Make sure we know what is going on here. */
7385 BFD_ASSERT (dynobj != NULL
7387 || h->u.weakdef != NULL
7390 && !h->def_regular)));
7392 eh = (struct elf32_arm_link_hash_entry *) h;
7394 /* If this is a function, put it in the procedure linkage table. We
7395 will fill in the contents of the procedure linkage table later,
7396 when we know the address of the .got section. */
7397 if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
7400 if (h->plt.refcount <= 0
7401 || SYMBOL_CALLS_LOCAL (info, h)
7402 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
7403 && h->root.type == bfd_link_hash_undefweak))
7405 /* This case can occur if we saw a PLT32 reloc in an input
7406 file, but the symbol was never referred to by a dynamic
7407 object, or if all references were garbage collected. In
7408 such a case, we don't actually need to build a procedure
7409 linkage table, and we can just do a PC24 reloc instead. */
7410 h->plt.offset = (bfd_vma) -1;
7411 eh->plt_thumb_refcount = 0;
7419 /* It's possible that we incorrectly decided a .plt reloc was
7420 needed for an R_ARM_PC24 or similar reloc to a non-function sym
7421 in check_relocs. We can't decide accurately between function
7422 and non-function syms in check-relocs; Objects loaded later in
7423 the link may change h->type. So fix it now. */
7424 h->plt.offset = (bfd_vma) -1;
7425 eh->plt_thumb_refcount = 0;
7428 /* If this is a weak symbol, and there is a real definition, the
7429 processor independent code will have arranged for us to see the
7430 real definition first, and we can just use the same value. */
7431 if (h->u.weakdef != NULL)
7433 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
7434 || h->u.weakdef->root.type == bfd_link_hash_defweak);
7435 h->root.u.def.section = h->u.weakdef->root.u.def.section;
7436 h->root.u.def.value = h->u.weakdef->root.u.def.value;
7440 /* If there are no non-GOT references, we do not need a copy
7442 if (!h->non_got_ref)
7445 /* This is a reference to a symbol defined by a dynamic object which
7446 is not a function. */
7448 /* If we are creating a shared library, we must presume that the
7449 only references to the symbol are via the global offset table.
7450 For such cases we need not do anything here; the relocations will
7451 be handled correctly by relocate_section. Relocatable executables
7452 can reference data in shared objects directly, so we don't need to
7453 do anything here. */
7454 if (info->shared || globals->root.is_relocatable_executable)
7459 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
7460 h->root.root.string);
7464 /* We must allocate the symbol in our .dynbss section, which will
7465 become part of the .bss section of the executable. There will be
7466 an entry for this symbol in the .dynsym section. The dynamic
7467 object will contain position independent code, so all references
7468 from the dynamic object to this symbol will go through the global
7469 offset table. The dynamic linker will use the .dynsym entry to
7470 determine the address it must put in the global offset table, so
7471 both the dynamic object and the regular object will refer to the
7472 same memory location for the variable. */
7473 s = bfd_get_section_by_name (dynobj, ".dynbss");
7474 BFD_ASSERT (s != NULL);
7476 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
7477 copy the initial value out of the dynamic object and into the
7478 runtime process image. We need to remember the offset into the
7479 .rel(a).bss section we are going to use. */
7480 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
7484 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss"));
7485 BFD_ASSERT (srel != NULL);
7486 srel->size += RELOC_SIZE (globals);
7490 /* We need to figure out the alignment required for this symbol. I
7491 have no idea how ELF linkers handle this. */
7492 power_of_two = bfd_log2 (h->size);
7493 if (power_of_two > 3)
7496 /* Apply the required alignment. */
7497 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
7498 if (power_of_two > bfd_get_section_alignment (dynobj, s))
7500 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
7504 /* Define the symbol as being at this point in the section. */
7505 h->root.u.def.section = s;
7506 h->root.u.def.value = s->size;
7508 /* Increment the section size to make room for the symbol. */
7514 /* Allocate space in .plt, .got and associated reloc sections for
7518 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
7520 struct bfd_link_info *info;
7521 struct elf32_arm_link_hash_table *htab;
7522 struct elf32_arm_link_hash_entry *eh;
7523 struct elf32_arm_relocs_copied *p;
7525 eh = (struct elf32_arm_link_hash_entry *) h;
7527 if (h->root.type == bfd_link_hash_indirect)
7530 if (h->root.type == bfd_link_hash_warning)
7531 /* When warning symbols are created, they **replace** the "real"
7532 entry in the hash table, thus we never get to see the real
7533 symbol in a hash traversal. So look at it now. */
7534 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7536 info = (struct bfd_link_info *) inf;
7537 htab = elf32_arm_hash_table (info);
7539 if (htab->root.dynamic_sections_created
7540 && h->plt.refcount > 0)
7542 /* Make sure this symbol is output as a dynamic symbol.
7543 Undefined weak syms won't yet be marked as dynamic. */
7544 if (h->dynindx == -1
7545 && !h->forced_local)
7547 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7552 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
7554 asection *s = htab->splt;
7556 /* If this is the first .plt entry, make room for the special
7559 s->size += htab->plt_header_size;
7561 h->plt.offset = s->size;
7563 /* If we will insert a Thumb trampoline before this PLT, leave room
7565 if (!htab->use_blx && eh->plt_thumb_refcount > 0)
7567 h->plt.offset += PLT_THUMB_STUB_SIZE;
7568 s->size += PLT_THUMB_STUB_SIZE;
7571 /* If this symbol is not defined in a regular file, and we are
7572 not generating a shared library, then set the symbol to this
7573 location in the .plt. This is required to make function
7574 pointers compare as equal between the normal executable and
7575 the shared library. */
7579 h->root.u.def.section = s;
7580 h->root.u.def.value = h->plt.offset;
7582 /* Make sure the function is not marked as Thumb, in case
7583 it is the target of an ABS32 relocation, which will
7584 point to the PLT entry. */
7585 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
7586 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
7589 /* Make room for this entry. */
7590 s->size += htab->plt_entry_size;
7592 if (!htab->symbian_p)
7594 /* We also need to make an entry in the .got.plt section, which
7595 will be placed in the .got section by the linker script. */
7596 eh->plt_got_offset = htab->sgotplt->size;
7597 htab->sgotplt->size += 4;
7600 /* We also need to make an entry in the .rel(a).plt section. */
7601 htab->srelplt->size += RELOC_SIZE (htab);
7603 /* VxWorks executables have a second set of relocations for
7604 each PLT entry. They go in a separate relocation section,
7605 which is processed by the kernel loader. */
7606 if (htab->vxworks_p && !info->shared)
7608 /* There is a relocation for the initial PLT entry:
7609 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
7610 if (h->plt.offset == htab->plt_header_size)
7611 htab->srelplt2->size += RELOC_SIZE (htab);
7613 /* There are two extra relocations for each subsequent
7614 PLT entry: an R_ARM_32 relocation for the GOT entry,
7615 and an R_ARM_32 relocation for the PLT entry. */
7616 htab->srelplt2->size += RELOC_SIZE (htab) * 2;
7621 h->plt.offset = (bfd_vma) -1;
7627 h->plt.offset = (bfd_vma) -1;
7631 if (h->got.refcount > 0)
7635 int tls_type = elf32_arm_hash_entry (h)->tls_type;
7638 /* Make sure this symbol is output as a dynamic symbol.
7639 Undefined weak syms won't yet be marked as dynamic. */
7640 if (h->dynindx == -1
7641 && !h->forced_local)
7643 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7647 if (!htab->symbian_p)
7650 h->got.offset = s->size;
7652 if (tls_type == GOT_UNKNOWN)
7655 if (tls_type == GOT_NORMAL)
7656 /* Non-TLS symbols need one GOT slot. */
7660 if (tls_type & GOT_TLS_GD)
7661 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
7663 if (tls_type & GOT_TLS_IE)
7664 /* R_ARM_TLS_IE32 needs one GOT slot. */
7668 dyn = htab->root.dynamic_sections_created;
7671 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7673 || !SYMBOL_REFERENCES_LOCAL (info, h)))
7676 if (tls_type != GOT_NORMAL
7677 && (info->shared || indx != 0)
7678 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7679 || h->root.type != bfd_link_hash_undefweak))
7681 if (tls_type & GOT_TLS_IE)
7682 htab->srelgot->size += RELOC_SIZE (htab);
7684 if (tls_type & GOT_TLS_GD)
7685 htab->srelgot->size += RELOC_SIZE (htab);
7687 if ((tls_type & GOT_TLS_GD) && indx != 0)
7688 htab->srelgot->size += RELOC_SIZE (htab);
7690 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7691 || h->root.type != bfd_link_hash_undefweak)
7693 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
7694 htab->srelgot->size += RELOC_SIZE (htab);
7698 h->got.offset = (bfd_vma) -1;
7700 /* Allocate stubs for exported Thumb functions on v4t. */
7701 if (!htab->use_blx && h->dynindx != -1
7702 && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
7703 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
7705 struct elf_link_hash_entry * th;
7706 struct bfd_link_hash_entry * bh;
7707 struct elf_link_hash_entry * myh;
7711 /* Create a new symbol to regist the real location of the function. */
7712 s = h->root.u.def.section;
7713 sprintf(name, "__real_%s", h->root.root.string);
7714 _bfd_generic_link_add_one_symbol (info, s->owner,
7715 name, BSF_GLOBAL, s,
7716 h->root.u.def.value,
7717 NULL, TRUE, FALSE, &bh);
7719 myh = (struct elf_link_hash_entry *) bh;
7720 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
7721 myh->forced_local = 1;
7722 eh->export_glue = myh;
7723 th = record_arm_to_thumb_glue (info, h);
7724 /* Point the symbol at the stub. */
7725 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
7726 h->root.u.def.section = th->root.u.def.section;
7727 h->root.u.def.value = th->root.u.def.value & ~1;
7730 if (eh->relocs_copied == NULL)
7733 /* In the shared -Bsymbolic case, discard space allocated for
7734 dynamic pc-relative relocs against symbols which turn out to be
7735 defined in regular objects. For the normal shared case, discard
7736 space for pc-relative relocs that have become local due to symbol
7737 visibility changes. */
7739 if (info->shared || htab->root.is_relocatable_executable)
7741 /* The only reloc thats uses pc_count are R_ARM_REL32 and
7742 R_ARM_REL32_NOI, which will appear on something like
7743 ".long foo - .". We want calls to protected symbols to resolve
7744 directly to the function rather than going via the plt. If people
7745 want function pointer comparisons to work as expected then they
7746 should avoid writing assembly like ".long foo - .". */
7747 if (SYMBOL_CALLS_LOCAL (info, h))
7749 struct elf32_arm_relocs_copied **pp;
7751 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
7753 p->count -= p->pc_count;
7762 /* Also discard relocs on undefined weak syms with non-default
7764 if (eh->relocs_copied != NULL
7765 && h->root.type == bfd_link_hash_undefweak)
7767 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
7768 eh->relocs_copied = NULL;
7770 /* Make sure undefined weak symbols are output as a dynamic
7772 else if (h->dynindx == -1
7773 && !h->forced_local)
7775 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7780 else if (htab->root.is_relocatable_executable && h->dynindx == -1
7781 && h->root.type == bfd_link_hash_new)
7783 /* Output absolute symbols so that we can create relocations
7784 against them. For normal symbols we output a relocation
7785 against the section that contains them. */
7786 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7793 /* For the non-shared case, discard space for relocs against
7794 symbols which turn out to need copy relocs or are not
7800 || (htab->root.dynamic_sections_created
7801 && (h->root.type == bfd_link_hash_undefweak
7802 || h->root.type == bfd_link_hash_undefined))))
7804 /* Make sure this symbol is output as a dynamic symbol.
7805 Undefined weak syms won't yet be marked as dynamic. */
7806 if (h->dynindx == -1
7807 && !h->forced_local)
7809 if (! bfd_elf_link_record_dynamic_symbol (info, h))
7813 /* If that succeeded, we know we'll be keeping all the
7815 if (h->dynindx != -1)
7819 eh->relocs_copied = NULL;
7824 /* Finally, allocate space. */
7825 for (p = eh->relocs_copied; p != NULL; p = p->next)
7827 asection *sreloc = elf_section_data (p->section)->sreloc;
7828 sreloc->size += p->count * RELOC_SIZE (htab);
7834 /* Find any dynamic relocs that apply to read-only sections. */
7837 elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
7839 struct elf32_arm_link_hash_entry *eh;
7840 struct elf32_arm_relocs_copied *p;
7842 if (h->root.type == bfd_link_hash_warning)
7843 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7845 eh = (struct elf32_arm_link_hash_entry *) h;
7846 for (p = eh->relocs_copied; p != NULL; p = p->next)
7848 asection *s = p->section;
7850 if (s != NULL && (s->flags & SEC_READONLY) != 0)
7852 struct bfd_link_info *info = (struct bfd_link_info *) inf;
7854 info->flags |= DF_TEXTREL;
7856 /* Not an error, just cut short the traversal. */
7863 /* Set the sizes of the dynamic sections. */
7866 elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
7867 struct bfd_link_info * info)
7874 struct elf32_arm_link_hash_table *htab;
7876 htab = elf32_arm_hash_table (info);
7877 dynobj = elf_hash_table (info)->dynobj;
7878 BFD_ASSERT (dynobj != NULL);
7879 check_use_blx (htab);
7881 if (elf_hash_table (info)->dynamic_sections_created)
7883 /* Set the contents of the .interp section to the interpreter. */
7884 if (info->executable)
7886 s = bfd_get_section_by_name (dynobj, ".interp");
7887 BFD_ASSERT (s != NULL);
7888 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
7889 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
7893 /* Set up .got offsets for local syms, and space for local dynamic
7895 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
7897 bfd_signed_vma *local_got;
7898 bfd_signed_vma *end_local_got;
7899 char *local_tls_type;
7900 bfd_size_type locsymcount;
7901 Elf_Internal_Shdr *symtab_hdr;
7904 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
7907 for (s = ibfd->sections; s != NULL; s = s->next)
7909 struct elf32_arm_relocs_copied *p;
7911 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
7913 if (!bfd_is_abs_section (p->section)
7914 && bfd_is_abs_section (p->section->output_section))
7916 /* Input section has been discarded, either because
7917 it is a copy of a linkonce section or due to
7918 linker script /DISCARD/, so we'll be discarding
7921 else if (p->count != 0)
7923 srel = elf_section_data (p->section)->sreloc;
7924 srel->size += p->count * RELOC_SIZE (htab);
7925 if ((p->section->output_section->flags & SEC_READONLY) != 0)
7926 info->flags |= DF_TEXTREL;
7931 local_got = elf_local_got_refcounts (ibfd);
7935 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7936 locsymcount = symtab_hdr->sh_info;
7937 end_local_got = local_got + locsymcount;
7938 local_tls_type = elf32_arm_local_got_tls_type (ibfd);
7940 srel = htab->srelgot;
7941 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
7945 *local_got = s->size;
7946 if (*local_tls_type & GOT_TLS_GD)
7947 /* TLS_GD relocs need an 8-byte structure in the GOT. */
7949 if (*local_tls_type & GOT_TLS_IE)
7951 if (*local_tls_type == GOT_NORMAL)
7954 if (info->shared || *local_tls_type == GOT_TLS_GD)
7955 srel->size += RELOC_SIZE (htab);
7958 *local_got = (bfd_vma) -1;
7962 if (htab->tls_ldm_got.refcount > 0)
7964 /* Allocate two GOT entries and one dynamic relocation (if necessary)
7965 for R_ARM_TLS_LDM32 relocations. */
7966 htab->tls_ldm_got.offset = htab->sgot->size;
7967 htab->sgot->size += 8;
7969 htab->srelgot->size += RELOC_SIZE (htab);
7972 htab->tls_ldm_got.offset = -1;
7974 /* Allocate global sym .plt and .got entries, and space for global
7975 sym dynamic relocs. */
7976 elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info);
7978 /* The check_relocs and adjust_dynamic_symbol entry points have
7979 determined the sizes of the various dynamic sections. Allocate
7983 for (s = dynobj->sections; s != NULL; s = s->next)
7987 if ((s->flags & SEC_LINKER_CREATED) == 0)
7990 /* It's OK to base decisions on the section name, because none
7991 of the dynobj section names depend upon the input files. */
7992 name = bfd_get_section_name (dynobj, s);
7994 if (strcmp (name, ".plt") == 0)
7996 /* Remember whether there is a PLT. */
7999 else if (CONST_STRNEQ (name, ".rel"))
8003 /* Remember whether there are any reloc sections other
8004 than .rel(a).plt and .rela.plt.unloaded. */
8005 if (s != htab->srelplt && s != htab->srelplt2)
8008 /* We use the reloc_count field as a counter if we need
8009 to copy relocs into the output file. */
8013 else if (! CONST_STRNEQ (name, ".got")
8014 && strcmp (name, ".dynbss") != 0)
8016 /* It's not one of our sections, so don't allocate space. */
8022 /* If we don't need this section, strip it from the
8023 output file. This is mostly to handle .rel(a).bss and
8024 .rel(a).plt. We must create both sections in
8025 create_dynamic_sections, because they must be created
8026 before the linker maps input sections to output
8027 sections. The linker does that before
8028 adjust_dynamic_symbol is called, and it is that
8029 function which decides whether anything needs to go
8030 into these sections. */
8031 s->flags |= SEC_EXCLUDE;
8035 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8038 /* Allocate memory for the section contents. */
8039 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
8040 if (s->contents == NULL)
8044 if (elf_hash_table (info)->dynamic_sections_created)
8046 /* Add some entries to the .dynamic section. We fill in the
8047 values later, in elf32_arm_finish_dynamic_sections, but we
8048 must add the entries now so that we get the correct size for
8049 the .dynamic section. The DT_DEBUG entry is filled in by the
8050 dynamic linker and used by the debugger. */
8051 #define add_dynamic_entry(TAG, VAL) \
8052 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8054 if (info->executable)
8056 if (!add_dynamic_entry (DT_DEBUG, 0))
8062 if ( !add_dynamic_entry (DT_PLTGOT, 0)
8063 || !add_dynamic_entry (DT_PLTRELSZ, 0)
8064 || !add_dynamic_entry (DT_PLTREL,
8065 htab->use_rel ? DT_REL : DT_RELA)
8066 || !add_dynamic_entry (DT_JMPREL, 0))
8074 if (!add_dynamic_entry (DT_REL, 0)
8075 || !add_dynamic_entry (DT_RELSZ, 0)
8076 || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab)))
8081 if (!add_dynamic_entry (DT_RELA, 0)
8082 || !add_dynamic_entry (DT_RELASZ, 0)
8083 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
8088 /* If any dynamic relocs apply to a read-only section,
8089 then we need a DT_TEXTREL entry. */
8090 if ((info->flags & DF_TEXTREL) == 0)
8091 elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs,
8094 if ((info->flags & DF_TEXTREL) != 0)
8096 if (!add_dynamic_entry (DT_TEXTREL, 0))
8100 #undef add_dynamic_entry
8105 /* Finish up dynamic symbol handling. We set the contents of various
8106 dynamic sections here. */
8109 elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info,
8110 struct elf_link_hash_entry * h, Elf_Internal_Sym * sym)
8113 struct elf32_arm_link_hash_table *htab;
8114 struct elf32_arm_link_hash_entry *eh;
8116 dynobj = elf_hash_table (info)->dynobj;
8117 htab = elf32_arm_hash_table (info);
8118 eh = (struct elf32_arm_link_hash_entry *) h;
8120 if (h->plt.offset != (bfd_vma) -1)
8126 Elf_Internal_Rela rel;
8128 /* This symbol has an entry in the procedure linkage table. Set
8131 BFD_ASSERT (h->dynindx != -1);
8133 splt = bfd_get_section_by_name (dynobj, ".plt");
8134 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt"));
8135 BFD_ASSERT (splt != NULL && srel != NULL);
8137 /* Fill in the entry in the procedure linkage table. */
8138 if (htab->symbian_p)
8140 put_arm_insn (htab, output_bfd,
8141 elf32_arm_symbian_plt_entry[0],
8142 splt->contents + h->plt.offset);
8143 bfd_put_32 (output_bfd,
8144 elf32_arm_symbian_plt_entry[1],
8145 splt->contents + h->plt.offset + 4);
8147 /* Fill in the entry in the .rel.plt section. */
8148 rel.r_offset = (splt->output_section->vma
8149 + splt->output_offset
8150 + h->plt.offset + 4);
8151 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
8153 /* Get the index in the procedure linkage table which
8154 corresponds to this symbol. This is the index of this symbol
8155 in all the symbols for which we are making plt entries. The
8156 first entry in the procedure linkage table is reserved. */
8157 plt_index = ((h->plt.offset - htab->plt_header_size)
8158 / htab->plt_entry_size);
8162 bfd_vma got_offset, got_address, plt_address;
8163 bfd_vma got_displacement;
8167 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
8168 BFD_ASSERT (sgot != NULL);
8170 /* Get the offset into the .got.plt table of the entry that
8171 corresponds to this function. */
8172 got_offset = eh->plt_got_offset;
8174 /* Get the index in the procedure linkage table which
8175 corresponds to this symbol. This is the index of this symbol
8176 in all the symbols for which we are making plt entries. The
8177 first three entries in .got.plt are reserved; after that
8178 symbols appear in the same order as in .plt. */
8179 plt_index = (got_offset - 12) / 4;
8181 /* Calculate the address of the GOT entry. */
8182 got_address = (sgot->output_section->vma
8183 + sgot->output_offset
8186 /* ...and the address of the PLT entry. */
8187 plt_address = (splt->output_section->vma
8188 + splt->output_offset
8191 ptr = htab->splt->contents + h->plt.offset;
8192 if (htab->vxworks_p && info->shared)
8197 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
8199 val = elf32_arm_vxworks_shared_plt_entry[i];
8201 val |= got_address - sgot->output_section->vma;
8203 val |= plt_index * RELOC_SIZE (htab);
8204 if (i == 2 || i == 5)
8205 bfd_put_32 (output_bfd, val, ptr);
8207 put_arm_insn (htab, output_bfd, val, ptr);
8210 else if (htab->vxworks_p)
8215 for (i = 0; i != htab->plt_entry_size / 4; i++)
8217 val = elf32_arm_vxworks_exec_plt_entry[i];
8221 val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2);
8223 val |= plt_index * RELOC_SIZE (htab);
8224 if (i == 2 || i == 5)
8225 bfd_put_32 (output_bfd, val, ptr);
8227 put_arm_insn (htab, output_bfd, val, ptr);
8230 loc = (htab->srelplt2->contents
8231 + (plt_index * 2 + 1) * RELOC_SIZE (htab));
8233 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
8234 referencing the GOT for this PLT entry. */
8235 rel.r_offset = plt_address + 8;
8236 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
8237 rel.r_addend = got_offset;
8238 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
8239 loc += RELOC_SIZE (htab);
8241 /* Create the R_ARM_ABS32 relocation referencing the
8242 beginning of the PLT for this GOT entry. */
8243 rel.r_offset = got_address;
8244 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
8246 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
8250 /* Calculate the displacement between the PLT slot and the
8251 entry in the GOT. The eight-byte offset accounts for the
8252 value produced by adding to pc in the first instruction
8254 got_displacement = got_address - (plt_address + 8);
8256 BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
8258 if (!htab->use_blx && eh->plt_thumb_refcount > 0)
8260 put_thumb_insn (htab, output_bfd,
8261 elf32_arm_plt_thumb_stub[0], ptr - 4);
8262 put_thumb_insn (htab, output_bfd,
8263 elf32_arm_plt_thumb_stub[1], ptr - 2);
8266 put_arm_insn (htab, output_bfd,
8267 elf32_arm_plt_entry[0]
8268 | ((got_displacement & 0x0ff00000) >> 20),
8270 put_arm_insn (htab, output_bfd,
8271 elf32_arm_plt_entry[1]
8272 | ((got_displacement & 0x000ff000) >> 12),
8274 put_arm_insn (htab, output_bfd,
8275 elf32_arm_plt_entry[2]
8276 | (got_displacement & 0x00000fff),
8278 #ifdef FOUR_WORD_PLT
8279 bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12);
8283 /* Fill in the entry in the global offset table. */
8284 bfd_put_32 (output_bfd,
8285 (splt->output_section->vma
8286 + splt->output_offset),
8287 sgot->contents + got_offset);
8289 /* Fill in the entry in the .rel(a).plt section. */
8291 rel.r_offset = got_address;
8292 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
8295 loc = srel->contents + plt_index * RELOC_SIZE (htab);
8296 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
8298 if (!h->def_regular)
8300 /* Mark the symbol as undefined, rather than as defined in
8301 the .plt section. Leave the value alone. */
8302 sym->st_shndx = SHN_UNDEF;
8303 /* If the symbol is weak, we do need to clear the value.
8304 Otherwise, the PLT entry would provide a definition for
8305 the symbol even if the symbol wasn't defined anywhere,
8306 and so the symbol would never be NULL. */
8307 if (!h->ref_regular_nonweak)
8312 if (h->got.offset != (bfd_vma) -1
8313 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0
8314 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0)
8318 Elf_Internal_Rela rel;
8322 /* This symbol has an entry in the global offset table. Set it
8324 sgot = bfd_get_section_by_name (dynobj, ".got");
8325 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got"));
8326 BFD_ASSERT (sgot != NULL && srel != NULL);
8328 offset = (h->got.offset & ~(bfd_vma) 1);
8330 rel.r_offset = (sgot->output_section->vma
8331 + sgot->output_offset
8334 /* If this is a static link, or it is a -Bsymbolic link and the
8335 symbol is defined locally or was forced to be local because
8336 of a version file, we just want to emit a RELATIVE reloc.
8337 The entry in the global offset table will already have been
8338 initialized in the relocate_section function. */
8340 && SYMBOL_REFERENCES_LOCAL (info, h))
8342 BFD_ASSERT((h->got.offset & 1) != 0);
8343 rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
8346 rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
8347 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
8352 BFD_ASSERT((h->got.offset & 1) == 0);
8353 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
8354 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
8357 loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab);
8358 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
8364 Elf_Internal_Rela rel;
8367 /* This symbol needs a copy reloc. Set it up. */
8368 BFD_ASSERT (h->dynindx != -1
8369 && (h->root.type == bfd_link_hash_defined
8370 || h->root.type == bfd_link_hash_defweak));
8372 s = bfd_get_section_by_name (h->root.u.def.section->owner,
8373 RELOC_SECTION (htab, ".bss"));
8374 BFD_ASSERT (s != NULL);
8377 rel.r_offset = (h->root.u.def.value
8378 + h->root.u.def.section->output_section->vma
8379 + h->root.u.def.section->output_offset);
8380 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
8381 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
8382 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
8385 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
8386 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
8387 to the ".got" section. */
8388 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
8389 || (!htab->vxworks_p && h == htab->root.hgot))
8390 sym->st_shndx = SHN_ABS;
8395 /* Finish up the dynamic sections. */
8398 elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
8404 dynobj = elf_hash_table (info)->dynobj;
8406 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
8407 BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL);
8408 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
8410 if (elf_hash_table (info)->dynamic_sections_created)
8413 Elf32_External_Dyn *dyncon, *dynconend;
8414 struct elf32_arm_link_hash_table *htab;
8416 htab = elf32_arm_hash_table (info);
8417 splt = bfd_get_section_by_name (dynobj, ".plt");
8418 BFD_ASSERT (splt != NULL && sdyn != NULL);
8420 dyncon = (Elf32_External_Dyn *) sdyn->contents;
8421 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
8423 for (; dyncon < dynconend; dyncon++)
8425 Elf_Internal_Dyn dyn;
8429 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
8440 goto get_vma_if_bpabi;
8443 goto get_vma_if_bpabi;
8446 goto get_vma_if_bpabi;
8448 name = ".gnu.version";
8449 goto get_vma_if_bpabi;
8451 name = ".gnu.version_d";
8452 goto get_vma_if_bpabi;
8454 name = ".gnu.version_r";
8455 goto get_vma_if_bpabi;
8461 name = RELOC_SECTION (htab, ".plt");
8463 s = bfd_get_section_by_name (output_bfd, name);
8464 BFD_ASSERT (s != NULL);
8465 if (!htab->symbian_p)
8466 dyn.d_un.d_ptr = s->vma;
8468 /* In the BPABI, tags in the PT_DYNAMIC section point
8469 at the file offset, not the memory address, for the
8470 convenience of the post linker. */
8471 dyn.d_un.d_ptr = s->filepos;
8472 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8476 if (htab->symbian_p)
8481 s = bfd_get_section_by_name (output_bfd,
8482 RELOC_SECTION (htab, ".plt"));
8483 BFD_ASSERT (s != NULL);
8484 dyn.d_un.d_val = s->size;
8485 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8490 if (!htab->symbian_p)
8492 /* My reading of the SVR4 ABI indicates that the
8493 procedure linkage table relocs (DT_JMPREL) should be
8494 included in the overall relocs (DT_REL). This is
8495 what Solaris does. However, UnixWare can not handle
8496 that case. Therefore, we override the DT_RELSZ entry
8497 here to make it not include the JMPREL relocs. Since
8498 the linker script arranges for .rel(a).plt to follow all
8499 other relocation sections, we don't have to worry
8500 about changing the DT_REL entry. */
8501 s = bfd_get_section_by_name (output_bfd,
8502 RELOC_SECTION (htab, ".plt"));
8504 dyn.d_un.d_val -= s->size;
8505 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8512 /* In the BPABI, the DT_REL tag must point at the file
8513 offset, not the VMA, of the first relocation
8514 section. So, we use code similar to that in
8515 elflink.c, but do not check for SHF_ALLOC on the
8516 relcoation section, since relocations sections are
8517 never allocated under the BPABI. The comments above
8518 about Unixware notwithstanding, we include all of the
8519 relocations here. */
8520 if (htab->symbian_p)
8523 type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
8524 ? SHT_REL : SHT_RELA);
8526 for (i = 1; i < elf_numsections (output_bfd); i++)
8528 Elf_Internal_Shdr *hdr
8529 = elf_elfsections (output_bfd)[i];
8530 if (hdr->sh_type == type)
8532 if (dyn.d_tag == DT_RELSZ
8533 || dyn.d_tag == DT_RELASZ)
8534 dyn.d_un.d_val += hdr->sh_size;
8535 else if ((ufile_ptr) hdr->sh_offset
8536 <= dyn.d_un.d_val - 1)
8537 dyn.d_un.d_val = hdr->sh_offset;
8540 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8544 /* Set the bottom bit of DT_INIT/FINI if the
8545 corresponding function is Thumb. */
8547 name = info->init_function;
8550 name = info->fini_function;
8552 /* If it wasn't set by elf_bfd_final_link
8553 then there is nothing to adjust. */
8554 if (dyn.d_un.d_val != 0)
8556 struct elf_link_hash_entry * eh;
8558 eh = elf_link_hash_lookup (elf_hash_table (info), name,
8559 FALSE, FALSE, TRUE);
8560 if (eh != (struct elf_link_hash_entry *) NULL
8561 && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC)
8563 dyn.d_un.d_val |= 1;
8564 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
8571 /* Fill in the first entry in the procedure linkage table. */
8572 if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size)
8574 const bfd_vma *plt0_entry;
8575 bfd_vma got_address, plt_address, got_displacement;
8577 /* Calculate the addresses of the GOT and PLT. */
8578 got_address = sgot->output_section->vma + sgot->output_offset;
8579 plt_address = splt->output_section->vma + splt->output_offset;
8581 if (htab->vxworks_p)
8583 /* The VxWorks GOT is relocated by the dynamic linker.
8584 Therefore, we must emit relocations rather than simply
8585 computing the values now. */
8586 Elf_Internal_Rela rel;
8588 plt0_entry = elf32_arm_vxworks_exec_plt0_entry;
8589 put_arm_insn (htab, output_bfd, plt0_entry[0],
8590 splt->contents + 0);
8591 put_arm_insn (htab, output_bfd, plt0_entry[1],
8592 splt->contents + 4);
8593 put_arm_insn (htab, output_bfd, plt0_entry[2],
8594 splt->contents + 8);
8595 bfd_put_32 (output_bfd, got_address, splt->contents + 12);
8597 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
8598 rel.r_offset = plt_address + 12;
8599 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
8601 SWAP_RELOC_OUT (htab) (output_bfd, &rel,
8602 htab->srelplt2->contents);
8606 got_displacement = got_address - (plt_address + 16);
8608 plt0_entry = elf32_arm_plt0_entry;
8609 put_arm_insn (htab, output_bfd, plt0_entry[0],
8610 splt->contents + 0);
8611 put_arm_insn (htab, output_bfd, plt0_entry[1],
8612 splt->contents + 4);
8613 put_arm_insn (htab, output_bfd, plt0_entry[2],
8614 splt->contents + 8);
8615 put_arm_insn (htab, output_bfd, plt0_entry[3],
8616 splt->contents + 12);
8618 #ifdef FOUR_WORD_PLT
8619 /* The displacement value goes in the otherwise-unused
8620 last word of the second entry. */
8621 bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
8623 bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
8628 /* UnixWare sets the entsize of .plt to 4, although that doesn't
8629 really seem like the right value. */
8630 if (splt->output_section->owner == output_bfd)
8631 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
8633 if (htab->vxworks_p && !info->shared && htab->splt->size > 0)
8635 /* Correct the .rel(a).plt.unloaded relocations. They will have
8636 incorrect symbol indexes. */
8640 num_plts = ((htab->splt->size - htab->plt_header_size)
8641 / htab->plt_entry_size);
8642 p = htab->srelplt2->contents + RELOC_SIZE (htab);
8644 for (; num_plts; num_plts--)
8646 Elf_Internal_Rela rel;
8648 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
8649 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
8650 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
8651 p += RELOC_SIZE (htab);
8653 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
8654 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
8655 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
8656 p += RELOC_SIZE (htab);
8661 /* Fill in the first three entries in the global offset table. */
8667 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
8669 bfd_put_32 (output_bfd,
8670 sdyn->output_section->vma + sdyn->output_offset,
8672 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
8673 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
8676 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
8683 elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
8685 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
8686 struct elf32_arm_link_hash_table *globals;
8688 i_ehdrp = elf_elfheader (abfd);
8690 if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
8691 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
8693 i_ehdrp->e_ident[EI_OSABI] = 0;
8694 i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
8698 globals = elf32_arm_hash_table (link_info);
8699 if (globals->byteswap_code)
8700 i_ehdrp->e_flags |= EF_ARM_BE8;
8704 static enum elf_reloc_type_class
8705 elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
8707 switch ((int) ELF32_R_TYPE (rela->r_info))
8709 case R_ARM_RELATIVE:
8710 return reloc_class_relative;
8711 case R_ARM_JUMP_SLOT:
8712 return reloc_class_plt;
8714 return reloc_class_copy;
8716 return reloc_class_normal;
8720 /* Set the right machine number for an Arm ELF file. */
8723 elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
8725 if (hdr->sh_type == SHT_NOTE)
8726 *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
8732 elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
8734 bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
8737 /* Return TRUE if this is an unwinding table entry. */
8740 is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
8742 return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind)
8743 || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once));
8747 /* Set the type and flags for an ARM section. We do this by
8748 the section name, which is a hack, but ought to work. */
8751 elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
8755 name = bfd_get_section_name (abfd, sec);
8757 if (is_arm_elf_unwind_section_name (abfd, name))
8759 hdr->sh_type = SHT_ARM_EXIDX;
8760 hdr->sh_flags |= SHF_LINK_ORDER;
8762 else if (strcmp(name, ".ARM.attributes") == 0)
8764 hdr->sh_type = SHT_ARM_ATTRIBUTES;
8769 /* Parse an Arm EABI attributes section. */
8771 elf32_arm_parse_attributes (bfd *abfd, Elf_Internal_Shdr * hdr)
8777 contents = bfd_malloc (hdr->sh_size);
8780 if (!bfd_get_section_contents (abfd, hdr->bfd_section, contents, 0,
8789 len = hdr->sh_size - 1;
8793 bfd_vma section_len;
8795 section_len = bfd_get_32 (abfd, p);
8797 if (section_len > len)
8800 namelen = strlen ((char *)p) + 1;
8801 section_len -= namelen + 4;
8802 if (strcmp((char *)p, "aeabi") != 0)
8804 /* Vendor section. Ignore it. */
8805 p += namelen + section_len;
8810 while (section_len > 0)
8815 bfd_vma subsection_len;
8818 tag = read_unsigned_leb128 (abfd, p, &n);
8820 subsection_len = bfd_get_32 (abfd, p);
8822 if (subsection_len > section_len)
8823 subsection_len = section_len;
8824 section_len -= subsection_len;
8825 subsection_len -= n + 4;
8826 end = p + subsection_len;
8832 bfd_boolean is_string;
8834 tag = read_unsigned_leb128 (abfd, p, &n);
8836 if (tag == 4 || tag == 5)
8841 is_string = (tag & 1) != 0;
8842 if (tag == Tag_compatibility)
8844 val = read_unsigned_leb128 (abfd, p, &n);
8846 elf32_arm_add_eabi_attr_compat (abfd, val,
8848 p += strlen ((char *)p) + 1;
8852 elf32_arm_add_eabi_attr_string (abfd, tag,
8854 p += strlen ((char *)p) + 1;
8858 val = read_unsigned_leb128 (abfd, p, &n);
8860 elf32_arm_add_eabi_attr_int (abfd, tag, val);
8866 /* Don't have anywhere convenient to attach these.
8867 Fall through for now. */
8869 /* Ignore things we don't kow about. */
8870 p += subsection_len;
8881 /* Handle an ARM specific section when reading an object file. This is
8882 called when bfd_section_from_shdr finds a section with an unknown
8886 elf32_arm_section_from_shdr (bfd *abfd,
8887 Elf_Internal_Shdr * hdr,
8891 /* There ought to be a place to keep ELF backend specific flags, but
8892 at the moment there isn't one. We just keep track of the
8893 sections by their name, instead. Fortunately, the ABI gives
8894 names for all the ARM specific sections, so we will probably get
8896 switch (hdr->sh_type)
8899 case SHT_ARM_PREEMPTMAP:
8900 case SHT_ARM_ATTRIBUTES:
8907 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
8910 if (hdr->sh_type == SHT_ARM_ATTRIBUTES)
8911 elf32_arm_parse_attributes(abfd, hdr);
8915 /* A structure used to record a list of sections, independently
8916 of the next and prev fields in the asection structure. */
8917 typedef struct section_list
8920 struct section_list * next;
8921 struct section_list * prev;
8925 /* Unfortunately we need to keep a list of sections for which
8926 an _arm_elf_section_data structure has been allocated. This
8927 is because it is possible for functions like elf32_arm_write_section
8928 to be called on a section which has had an elf_data_structure
8929 allocated for it (and so the used_by_bfd field is valid) but
8930 for which the ARM extended version of this structure - the
8931 _arm_elf_section_data structure - has not been allocated. */
8932 static section_list * sections_with_arm_elf_section_data = NULL;
8935 record_section_with_arm_elf_section_data (asection * sec)
8937 struct section_list * entry;
8939 entry = bfd_malloc (sizeof (* entry));
8943 entry->next = sections_with_arm_elf_section_data;
8945 if (entry->next != NULL)
8946 entry->next->prev = entry;
8947 sections_with_arm_elf_section_data = entry;
8950 static struct section_list *
8951 find_arm_elf_section_entry (asection * sec)
8953 struct section_list * entry;
8954 static struct section_list * last_entry = NULL;
8956 /* This is a short cut for the typical case where the sections are added
8957 to the sections_with_arm_elf_section_data list in forward order and
8958 then looked up here in backwards order. This makes a real difference
8959 to the ld-srec/sec64k.exp linker test. */
8960 entry = sections_with_arm_elf_section_data;
8961 if (last_entry != NULL)
8963 if (last_entry->sec == sec)
8965 else if (last_entry->next != NULL
8966 && last_entry->next->sec == sec)
8967 entry = last_entry->next;
8970 for (; entry; entry = entry->next)
8971 if (entry->sec == sec)
8975 /* Record the entry prior to this one - it is the entry we are most
8976 likely to want to locate next time. Also this way if we have been
8977 called from unrecord_section_with_arm_elf_section_data() we will not
8978 be caching a pointer that is about to be freed. */
8979 last_entry = entry->prev;
8984 static _arm_elf_section_data *
8985 get_arm_elf_section_data (asection * sec)
8987 struct section_list * entry;
8989 entry = find_arm_elf_section_entry (sec);
8992 return elf32_arm_section_data (entry->sec);
8998 unrecord_section_with_arm_elf_section_data (asection * sec)
9000 struct section_list * entry;
9002 entry = find_arm_elf_section_entry (sec);
9006 if (entry->prev != NULL)
9007 entry->prev->next = entry->next;
9008 if (entry->next != NULL)
9009 entry->next->prev = entry->prev;
9010 if (entry == sections_with_arm_elf_section_data)
9011 sections_with_arm_elf_section_data = entry->next;
9016 /* Called for each symbol. Builds a section map based on mapping symbols.
9017 Does not alter any of the symbols. */
9020 elf32_arm_output_symbol_hook (struct bfd_link_info *info,
9022 Elf_Internal_Sym *elfsym,
9023 asection *input_sec,
9024 struct elf_link_hash_entry *h)
9027 elf32_arm_section_map *map;
9028 elf32_arm_section_map *newmap;
9029 _arm_elf_section_data *arm_data;
9030 struct elf32_arm_link_hash_table *globals;
9032 globals = elf32_arm_hash_table (info);
9033 if (globals->vxworks_p
9034 && !elf_vxworks_link_output_symbol_hook (info, name, elfsym,
9038 /* Only do this on final link. */
9039 if (info->relocatable)
9042 /* Only build a map if we need to byteswap code. */
9043 if (!globals->byteswap_code)
9046 /* We only want mapping symbols. */
9047 if (!bfd_is_arm_special_symbol_name (name, BFD_ARM_SPECIAL_SYM_TYPE_MAP))
9050 /* If this section has not been allocated an _arm_elf_section_data
9051 structure then we cannot record anything. */
9052 arm_data = get_arm_elf_section_data (input_sec);
9053 if (arm_data == NULL)
9056 mapcount = arm_data->mapcount + 1;
9057 map = arm_data->map;
9059 /* TODO: This may be inefficient, but we probably don't usually have many
9060 mapping symbols per section. */
9061 newmap = bfd_realloc (map, mapcount * sizeof (* map));
9064 arm_data->map = newmap;
9065 arm_data->mapcount = mapcount;
9067 newmap[mapcount - 1].vma = elfsym->st_value;
9068 newmap[mapcount - 1].type = name[1];
9077 struct bfd_link_info *info;
9080 bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *,
9081 asection *, struct elf_link_hash_entry *);
9082 } output_arch_syminfo;
9084 enum map_symbol_type
9092 /* Output a single PLT mapping symbol. */
9095 elf32_arm_ouput_plt_map_sym (output_arch_syminfo *osi,
9096 enum map_symbol_type type,
9099 static const char *names[3] = {"$a", "$t", "$d"};
9100 struct elf32_arm_link_hash_table *htab;
9101 Elf_Internal_Sym sym;
9103 htab = elf32_arm_hash_table (osi->info);
9104 sym.st_value = osi->plt_offset + offset;
9107 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
9108 sym.st_shndx = osi->plt_shndx;
9109 if (!osi->func (osi->finfo, names[type], &sym, htab->splt, NULL))
9115 /* Output mapping symbols for PLT entries associated with H. */
9118 elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf)
9120 output_arch_syminfo *osi = (output_arch_syminfo *) inf;
9121 struct elf32_arm_link_hash_table *htab;
9122 struct elf32_arm_link_hash_entry *eh;
9125 htab = elf32_arm_hash_table (osi->info);
9127 if (h->root.type == bfd_link_hash_indirect)
9130 if (h->root.type == bfd_link_hash_warning)
9131 /* When warning symbols are created, they **replace** the "real"
9132 entry in the hash table, thus we never get to see the real
9133 symbol in a hash traversal. So look at it now. */
9134 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9136 if (h->plt.offset == (bfd_vma) -1)
9139 eh = (struct elf32_arm_link_hash_entry *) h;
9140 addr = h->plt.offset;
9141 if (htab->symbian_p)
9143 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9145 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 4))
9148 else if (htab->vxworks_p)
9150 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9152 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 8))
9154 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr + 12))
9156 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 20))
9161 bfd_boolean thumb_stub;
9163 thumb_stub = eh->plt_thumb_refcount > 0 && !htab->use_blx;
9166 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_THUMB, addr - 4))
9169 #ifdef FOUR_WORD_PLT
9170 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9172 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 12))
9175 /* A three-word PLT with no Thumb thunk contains only Arm code,
9176 so only need to output a mapping symbol for the first PLT entry and
9177 entries with thumb thunks. */
9178 if (thumb_stub || addr == 20)
9180 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9190 /* Output mapping symbols for the PLT. */
9193 elf32_arm_output_arch_local_syms (bfd *output_bfd,
9194 struct bfd_link_info *info,
9195 void *finfo, bfd_boolean (*func) (void *, const char *,
9198 struct elf_link_hash_entry *))
9200 output_arch_syminfo osi;
9201 struct elf32_arm_link_hash_table *htab;
9203 htab = elf32_arm_hash_table (info);
9204 if (!htab->splt || htab->splt->size == 0)
9207 check_use_blx(htab);
9211 osi.plt_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
9212 htab->splt->output_section);
9213 osi.plt_offset = htab->splt->output_section->vma;
9215 /* Output mapping symbols for the plt header. SymbianOS does not have a
9217 if (htab->vxworks_p)
9219 /* VxWorks shared libraries have no PLT header. */
9222 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0))
9224 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 12))
9228 else if (!htab->symbian_p)
9230 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0))
9232 #ifndef FOUR_WORD_PLT
9233 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 16))
9238 elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi);
9242 /* Allocate target specific section data. */
9245 elf32_arm_new_section_hook (bfd *abfd, asection *sec)
9247 if (!sec->used_by_bfd)
9249 _arm_elf_section_data *sdata;
9250 bfd_size_type amt = sizeof (*sdata);
9252 sdata = bfd_zalloc (abfd, amt);
9255 sec->used_by_bfd = sdata;
9258 record_section_with_arm_elf_section_data (sec);
9260 return _bfd_elf_new_section_hook (abfd, sec);
9264 /* Used to order a list of mapping symbols by address. */
9267 elf32_arm_compare_mapping (const void * a, const void * b)
9269 return ((const elf32_arm_section_map *) a)->vma
9270 > ((const elf32_arm_section_map *) b)->vma;
9274 /* Do code byteswapping. Return FALSE afterwards so that the section is
9275 written out as normal. */
9278 elf32_arm_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, asection *sec,
9282 _arm_elf_section_data *arm_data;
9283 elf32_arm_section_map *map;
9290 /* If this section has not been allocated an _arm_elf_section_data
9291 structure then we cannot record anything. */
9292 arm_data = get_arm_elf_section_data (sec);
9293 if (arm_data == NULL)
9296 mapcount = arm_data->mapcount;
9297 map = arm_data->map;
9302 qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
9304 offset = sec->output_section->vma + sec->output_offset;
9305 ptr = map[0].vma - offset;
9306 for (i = 0; i < mapcount; i++)
9308 if (i == mapcount - 1)
9311 end = map[i + 1].vma - offset;
9313 switch (map[i].type)
9316 /* Byte swap code words. */
9317 while (ptr + 3 < end)
9319 tmp = contents[ptr];
9320 contents[ptr] = contents[ptr + 3];
9321 contents[ptr + 3] = tmp;
9322 tmp = contents[ptr + 1];
9323 contents[ptr + 1] = contents[ptr + 2];
9324 contents[ptr + 2] = tmp;
9330 /* Byte swap code halfwords. */
9331 while (ptr + 1 < end)
9333 tmp = contents[ptr];
9334 contents[ptr] = contents[ptr + 1];
9335 contents[ptr + 1] = tmp;
9341 /* Leave data alone. */
9348 arm_data->mapcount = 0;
9349 arm_data->map = NULL;
9350 unrecord_section_with_arm_elf_section_data (sec);
9356 unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED,
9358 void * ignore ATTRIBUTE_UNUSED)
9360 unrecord_section_with_arm_elf_section_data (sec);
9364 elf32_arm_close_and_cleanup (bfd * abfd)
9367 bfd_map_over_sections (abfd,
9368 unrecord_section_via_map_over_sections,
9371 return _bfd_elf_close_and_cleanup (abfd);
9375 elf32_arm_bfd_free_cached_info (bfd * abfd)
9378 bfd_map_over_sections (abfd,
9379 unrecord_section_via_map_over_sections,
9382 return _bfd_free_cached_info (abfd);
9385 /* Display STT_ARM_TFUNC symbols as functions. */
9388 elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
9391 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
9393 if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC)
9394 elfsym->symbol.flags |= BSF_FUNCTION;
9398 /* Mangle thumb function symbols as we read them in. */
9401 elf32_arm_swap_symbol_in (bfd * abfd,
9404 Elf_Internal_Sym *dst)
9406 if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
9409 /* New EABI objects mark thumb function symbols by setting the low bit of
9410 the address. Turn these into STT_ARM_TFUNC. */
9411 if (ELF_ST_TYPE (dst->st_info) == STT_FUNC
9412 && (dst->st_value & 1))
9414 dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
9415 dst->st_value &= ~(bfd_vma) 1;
9421 /* Mangle thumb function symbols as we write them out. */
9424 elf32_arm_swap_symbol_out (bfd *abfd,
9425 const Elf_Internal_Sym *src,
9429 Elf_Internal_Sym newsym;
9431 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
9432 of the address set, as per the new EABI. We do this unconditionally
9433 because objcopy does not set the elf header flags until after
9434 it writes out the symbol table. */
9435 if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC)
9438 newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
9439 if (newsym.st_shndx != SHN_UNDEF)
9441 /* Do this only for defined symbols. At link type, the static
9442 linker will simulate the work of dynamic linker of resolving
9443 symbols and will carry over the thumbness of found symbols to
9444 the output symbol table. It's not clear how it happens, but
9445 the thumbness of undefined symbols can well be different at
9446 runtime, and writing '1' for them will be confusing for users
9447 and possibly for dynamic linker itself.
9449 newsym.st_value |= 1;
9454 bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
9457 /* Add the PT_ARM_EXIDX program header. */
9460 elf32_arm_modify_segment_map (bfd *abfd,
9461 struct bfd_link_info *info ATTRIBUTE_UNUSED)
9463 struct elf_segment_map *m;
9466 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
9467 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
9469 /* If there is already a PT_ARM_EXIDX header, then we do not
9470 want to add another one. This situation arises when running
9471 "strip"; the input binary already has the header. */
9472 m = elf_tdata (abfd)->segment_map;
9473 while (m && m->p_type != PT_ARM_EXIDX)
9477 m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
9480 m->p_type = PT_ARM_EXIDX;
9482 m->sections[0] = sec;
9484 m->next = elf_tdata (abfd)->segment_map;
9485 elf_tdata (abfd)->segment_map = m;
9492 /* We may add a PT_ARM_EXIDX program header. */
9495 elf32_arm_additional_program_headers (bfd *abfd,
9496 struct bfd_link_info *info ATTRIBUTE_UNUSED)
9500 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
9501 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
9507 /* We use this to override swap_symbol_in and swap_symbol_out. */
9508 const struct elf_size_info elf32_arm_size_info = {
9509 sizeof (Elf32_External_Ehdr),
9510 sizeof (Elf32_External_Phdr),
9511 sizeof (Elf32_External_Shdr),
9512 sizeof (Elf32_External_Rel),
9513 sizeof (Elf32_External_Rela),
9514 sizeof (Elf32_External_Sym),
9515 sizeof (Elf32_External_Dyn),
9516 sizeof (Elf_External_Note),
9520 ELFCLASS32, EV_CURRENT,
9521 bfd_elf32_write_out_phdrs,
9522 bfd_elf32_write_shdrs_and_ehdr,
9523 bfd_elf32_write_relocs,
9524 elf32_arm_swap_symbol_in,
9525 elf32_arm_swap_symbol_out,
9526 bfd_elf32_slurp_reloc_table,
9527 bfd_elf32_slurp_symbol_table,
9528 bfd_elf32_swap_dyn_in,
9529 bfd_elf32_swap_dyn_out,
9530 bfd_elf32_swap_reloc_in,
9531 bfd_elf32_swap_reloc_out,
9532 bfd_elf32_swap_reloca_in,
9533 bfd_elf32_swap_reloca_out
9536 #define ELF_ARCH bfd_arch_arm
9537 #define ELF_MACHINE_CODE EM_ARM
9538 #ifdef __QNXTARGET__
9539 #define ELF_MAXPAGESIZE 0x1000
9541 #define ELF_MAXPAGESIZE 0x8000
9543 #define ELF_MINPAGESIZE 0x1000
9544 #define ELF_COMMONPAGESIZE 0x1000
9546 #define bfd_elf32_mkobject elf32_arm_mkobject
9548 #define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
9549 #define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
9550 #define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
9551 #define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
9552 #define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
9553 #define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
9554 #define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
9555 #define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
9556 #define bfd_elf32_new_section_hook elf32_arm_new_section_hook
9557 #define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
9558 #define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
9559 #define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
9560 #define bfd_elf32_bfd_final_link elf32_arm_bfd_final_link
9562 #define elf_backend_get_symbol_type elf32_arm_get_symbol_type
9563 #define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
9564 #define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
9565 #define elf_backend_check_relocs elf32_arm_check_relocs
9566 #define elf_backend_relocate_section elf32_arm_relocate_section
9567 #define elf_backend_write_section elf32_arm_write_section
9568 #define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
9569 #define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
9570 #define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
9571 #define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
9572 #define elf_backend_link_output_symbol_hook elf32_arm_output_symbol_hook
9573 #define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
9574 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
9575 #define elf_backend_post_process_headers elf32_arm_post_process_headers
9576 #define elf_backend_reloc_type_class elf32_arm_reloc_type_class
9577 #define elf_backend_object_p elf32_arm_object_p
9578 #define elf_backend_section_flags elf32_arm_section_flags
9579 #define elf_backend_fake_sections elf32_arm_fake_sections
9580 #define elf_backend_section_from_shdr elf32_arm_section_from_shdr
9581 #define elf_backend_final_write_processing elf32_arm_final_write_processing
9582 #define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
9583 #define elf_backend_symbol_processing elf32_arm_symbol_processing
9584 #define elf_backend_size_info elf32_arm_size_info
9585 #define elf_backend_modify_segment_map elf32_arm_modify_segment_map
9586 #define elf_backend_additional_program_headers \
9587 elf32_arm_additional_program_headers
9588 #define elf_backend_output_arch_local_syms \
9589 elf32_arm_output_arch_local_syms
9590 #define elf_backend_begin_write_processing \
9591 elf32_arm_begin_write_processing
9593 #define elf_backend_can_refcount 1
9594 #define elf_backend_can_gc_sections 1
9595 #define elf_backend_plt_readonly 1
9596 #define elf_backend_want_got_plt 1
9597 #define elf_backend_want_plt_sym 0
9598 #define elf_backend_may_use_rel_p 1
9599 #define elf_backend_may_use_rela_p 0
9600 #define elf_backend_default_use_rela_p 0
9601 #define elf_backend_rela_normal 0
9603 #define elf_backend_got_header_size 12
9605 #include "elf32-target.h"
9607 /* VxWorks Targets */
9609 #undef TARGET_LITTLE_SYM
9610 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
9611 #undef TARGET_LITTLE_NAME
9612 #define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
9613 #undef TARGET_BIG_SYM
9614 #define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
9615 #undef TARGET_BIG_NAME
9616 #define TARGET_BIG_NAME "elf32-bigarm-vxworks"
9618 /* Like elf32_arm_link_hash_table_create -- but overrides
9619 appropriately for VxWorks. */
9620 static struct bfd_link_hash_table *
9621 elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
9623 struct bfd_link_hash_table *ret;
9625 ret = elf32_arm_link_hash_table_create (abfd);
9628 struct elf32_arm_link_hash_table *htab
9629 = (struct elf32_arm_link_hash_table *) ret;
9631 htab->vxworks_p = 1;
9637 elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
9639 elf32_arm_final_write_processing (abfd, linker);
9640 elf_vxworks_final_write_processing (abfd, linker);
9644 #define elf32_bed elf32_arm_vxworks_bed
9646 #undef bfd_elf32_bfd_link_hash_table_create
9647 #define bfd_elf32_bfd_link_hash_table_create \
9648 elf32_arm_vxworks_link_hash_table_create
9649 #undef elf_backend_add_symbol_hook
9650 #define elf_backend_add_symbol_hook \
9651 elf_vxworks_add_symbol_hook
9652 #undef elf_backend_final_write_processing
9653 #define elf_backend_final_write_processing \
9654 elf32_arm_vxworks_final_write_processing
9655 #undef elf_backend_emit_relocs
9656 #define elf_backend_emit_relocs \
9657 elf_vxworks_emit_relocs
9659 #undef elf_backend_may_use_rel_p
9660 #define elf_backend_may_use_rel_p 0
9661 #undef elf_backend_may_use_rela_p
9662 #define elf_backend_may_use_rela_p 1
9663 #undef elf_backend_default_use_rela_p
9664 #define elf_backend_default_use_rela_p 1
9665 #undef elf_backend_rela_normal
9666 #define elf_backend_rela_normal 1
9667 #undef elf_backend_want_plt_sym
9668 #define elf_backend_want_plt_sym 1
9669 #undef ELF_MAXPAGESIZE
9670 #define ELF_MAXPAGESIZE 0x1000
9672 #include "elf32-target.h"
9675 /* Symbian OS Targets */
9677 #undef TARGET_LITTLE_SYM
9678 #define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
9679 #undef TARGET_LITTLE_NAME
9680 #define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
9681 #undef TARGET_BIG_SYM
9682 #define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
9683 #undef TARGET_BIG_NAME
9684 #define TARGET_BIG_NAME "elf32-bigarm-symbian"
9686 /* Like elf32_arm_link_hash_table_create -- but overrides
9687 appropriately for Symbian OS. */
9688 static struct bfd_link_hash_table *
9689 elf32_arm_symbian_link_hash_table_create (bfd *abfd)
9691 struct bfd_link_hash_table *ret;
9693 ret = elf32_arm_link_hash_table_create (abfd);
9696 struct elf32_arm_link_hash_table *htab
9697 = (struct elf32_arm_link_hash_table *)ret;
9698 /* There is no PLT header for Symbian OS. */
9699 htab->plt_header_size = 0;
9700 /* The PLT entries are each three instructions. */
9701 htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry);
9702 htab->symbian_p = 1;
9703 /* Symbian uses armv5t or above, so use_blx is always true. */
9705 htab->root.is_relocatable_executable = 1;
9710 static const struct bfd_elf_special_section
9711 elf32_arm_symbian_special_sections[] =
9713 /* In a BPABI executable, the dynamic linking sections do not go in
9714 the loadable read-only segment. The post-linker may wish to
9715 refer to these sections, but they are not part of the final
9717 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 },
9718 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 },
9719 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 },
9720 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 },
9721 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 },
9722 /* These sections do not need to be writable as the SymbianOS
9723 postlinker will arrange things so that no dynamic relocation is
9725 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC },
9726 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC },
9727 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
9728 { NULL, 0, 0, 0, 0 }
9732 elf32_arm_symbian_begin_write_processing (bfd *abfd,
9733 struct bfd_link_info *link_info)
9735 /* BPABI objects are never loaded directly by an OS kernel; they are
9736 processed by a postlinker first, into an OS-specific format. If
9737 the D_PAGED bit is set on the file, BFD will align segments on
9738 page boundaries, so that an OS can directly map the file. With
9739 BPABI objects, that just results in wasted space. In addition,
9740 because we clear the D_PAGED bit, map_sections_to_segments will
9741 recognize that the program headers should not be mapped into any
9742 loadable segment. */
9743 abfd->flags &= ~D_PAGED;
9744 elf32_arm_begin_write_processing(abfd, link_info);
9748 elf32_arm_symbian_modify_segment_map (bfd *abfd,
9749 struct bfd_link_info *info)
9751 struct elf_segment_map *m;
9754 /* BPABI shared libraries and executables should have a PT_DYNAMIC
9755 segment. However, because the .dynamic section is not marked
9756 with SEC_LOAD, the generic ELF code will not create such a
9758 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
9761 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
9762 if (m->p_type == PT_DYNAMIC)
9767 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
9768 m->next = elf_tdata (abfd)->segment_map;
9769 elf_tdata (abfd)->segment_map = m;
9773 /* Also call the generic arm routine. */
9774 return elf32_arm_modify_segment_map (abfd, info);
9778 #define elf32_bed elf32_arm_symbian_bed
9780 /* The dynamic sections are not allocated on SymbianOS; the postlinker
9781 will process them and then discard them. */
9782 #undef ELF_DYNAMIC_SEC_FLAGS
9783 #define ELF_DYNAMIC_SEC_FLAGS \
9784 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
9786 #undef bfd_elf32_bfd_link_hash_table_create
9787 #define bfd_elf32_bfd_link_hash_table_create \
9788 elf32_arm_symbian_link_hash_table_create
9789 #undef elf_backend_add_symbol_hook
9791 #undef elf_backend_special_sections
9792 #define elf_backend_special_sections elf32_arm_symbian_special_sections
9794 #undef elf_backend_begin_write_processing
9795 #define elf_backend_begin_write_processing \
9796 elf32_arm_symbian_begin_write_processing
9797 #undef elf_backend_final_write_processing
9798 #define elf_backend_final_write_processing \
9799 elf32_arm_final_write_processing
9800 #undef elf_backend_emit_relocs
9802 #undef elf_backend_modify_segment_map
9803 #define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
9805 /* There is no .got section for BPABI objects, and hence no header. */
9806 #undef elf_backend_got_header_size
9807 #define elf_backend_got_header_size 0
9809 /* Similarly, there is no .got.plt section. */
9810 #undef elf_backend_want_got_plt
9811 #define elf_backend_want_got_plt 0
9813 #undef elf_backend_may_use_rel_p
9814 #define elf_backend_may_use_rel_p 1
9815 #undef elf_backend_may_use_rela_p
9816 #define elf_backend_may_use_rela_p 0
9817 #undef elf_backend_default_use_rela_p
9818 #define elf_backend_default_use_rela_p 0
9819 #undef elf_backend_rela_normal
9820 #define elf_backend_rela_normal 0
9821 #undef elf_backend_want_plt_sym
9822 #define elf_backend_want_plt_sym 0
9823 #undef ELF_MAXPAGESIZE
9824 #define ELF_MAXPAGESIZE 0x8000
9826 #include "elf32-target.h"
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