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* configure.tgt: Set em=vxworks for *-*-vxworks.
[thirdparty/binutils-gdb.git] / bfd / elf32-arm.c
CommitLineData
252b5132 1/* 32-bit ELF support for ARM
d1f161ea
NC		 2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
252b5132
RH		 4
5 This file is part of BFD, the Binary File Descriptor library.
6
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.
11
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.
16
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20
7f266840
DJ		 21#include "elf/arm.h"
22#include "bfd.h"
23#include "sysdep.h"
24#include "libbfd.h"
25#include "elf-bfd.h"
26
27#ifndef NUM_ELEM
28#define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0]))
29#endif
30
31#define USE_REL 1
32
33#define elf_info_to_howto 0
34#define elf_info_to_howto_rel elf32_arm_info_to_howto
35
36#define ARM_ELF_ABI_VERSION 0
37#define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
38
39static reloc_howto_type * elf32_arm_reloc_type_lookup
40 PARAMS ((bfd * abfd, bfd_reloc_code_real_type code));
41static bfd_boolean elf32_arm_nabi_grok_prstatus
42 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
43static bfd_boolean elf32_arm_nabi_grok_psinfo
44 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
45
46/* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
47 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
48 in that slot. */
49
50static reloc_howto_type elf32_arm_howto_table[] =
51{
52 /* No relocation */
53 HOWTO (R_ARM_NONE, /* type */
54 0, /* rightshift */
55 0, /* size (0 = byte, 1 = short, 2 = long) */
56 0, /* bitsize */
57 FALSE, /* pc_relative */
58 0, /* bitpos */
59 complain_overflow_dont,/* complain_on_overflow */
60 bfd_elf_generic_reloc, /* special_function */
61 "R_ARM_NONE", /* name */
62 FALSE, /* partial_inplace */
63 0, /* src_mask */
64 0, /* dst_mask */
65 FALSE), /* pcrel_offset */
66
67 HOWTO (R_ARM_PC24, /* type */
68 2, /* rightshift */
69 2, /* size (0 = byte, 1 = short, 2 = long) */
70 24, /* bitsize */
71 TRUE, /* pc_relative */
72 0, /* bitpos */
73 complain_overflow_signed,/* complain_on_overflow */
74 bfd_elf_generic_reloc, /* special_function */
75 "R_ARM_PC24", /* name */
76 FALSE, /* partial_inplace */
77 0x00ffffff, /* src_mask */
78 0x00ffffff, /* dst_mask */
79 TRUE), /* pcrel_offset */
80
81 /* 32 bit absolute */
82 HOWTO (R_ARM_ABS32, /* type */
83 0, /* rightshift */
84 2, /* size (0 = byte, 1 = short, 2 = long) */
85 32, /* bitsize */
86 FALSE, /* pc_relative */
87 0, /* bitpos */
88 complain_overflow_bitfield,/* complain_on_overflow */
89 bfd_elf_generic_reloc, /* special_function */
90 "R_ARM_ABS32", /* name */
91 FALSE, /* partial_inplace */
92 0xffffffff, /* src_mask */
93 0xffffffff, /* dst_mask */
94 FALSE), /* pcrel_offset */
95
96 /* standard 32bit pc-relative reloc */
97 HOWTO (R_ARM_REL32, /* type */
98 0, /* rightshift */
99 2, /* size (0 = byte, 1 = short, 2 = long) */
100 32, /* bitsize */
101 TRUE, /* pc_relative */
102 0, /* bitpos */
103 complain_overflow_bitfield,/* complain_on_overflow */
104 bfd_elf_generic_reloc, /* special_function */
105 "R_ARM_REL32", /* name */
106 FALSE, /* partial_inplace */
107 0xffffffff, /* src_mask */
108 0xffffffff, /* dst_mask */
109 TRUE), /* pcrel_offset */
110
111 /* 8 bit absolute */
112 HOWTO (R_ARM_PC13, /* type */
113 0, /* rightshift */
114 0, /* size (0 = byte, 1 = short, 2 = long) */
115 8, /* bitsize */
116 FALSE, /* pc_relative */
117 0, /* bitpos */
118 complain_overflow_bitfield,/* complain_on_overflow */
119 bfd_elf_generic_reloc, /* special_function */
120 "R_ARM_PC13", /* name */
121 FALSE, /* partial_inplace */
122 0x000000ff, /* src_mask */
123 0x000000ff, /* dst_mask */
124 FALSE), /* pcrel_offset */
125
126 /* 16 bit absolute */
127 HOWTO (R_ARM_ABS16, /* type */
128 0, /* rightshift */
129 1, /* size (0 = byte, 1 = short, 2 = long) */
130 16, /* bitsize */
131 FALSE, /* pc_relative */
132 0, /* bitpos */
133 complain_overflow_bitfield,/* complain_on_overflow */
134 bfd_elf_generic_reloc, /* special_function */
135 "R_ARM_ABS16", /* name */
136 FALSE, /* partial_inplace */
137 0x0000ffff, /* src_mask */
138 0x0000ffff, /* dst_mask */
139 FALSE), /* pcrel_offset */
140
141 /* 12 bit absolute */
142 HOWTO (R_ARM_ABS12, /* type */
143 0, /* rightshift */
144 2, /* size (0 = byte, 1 = short, 2 = long) */
145 12, /* bitsize */
146 FALSE, /* pc_relative */
147 0, /* bitpos */
148 complain_overflow_bitfield,/* complain_on_overflow */
149 bfd_elf_generic_reloc, /* special_function */
150 "R_ARM_ABS12", /* name */
151 FALSE, /* partial_inplace */
152 0x000008ff, /* src_mask */
153 0x000008ff, /* dst_mask */
154 FALSE), /* pcrel_offset */
155
156 HOWTO (R_ARM_THM_ABS5, /* type */
157 6, /* rightshift */
158 1, /* size (0 = byte, 1 = short, 2 = long) */
159 5, /* bitsize */
160 FALSE, /* pc_relative */
161 0, /* bitpos */
162 complain_overflow_bitfield,/* complain_on_overflow */
163 bfd_elf_generic_reloc, /* special_function */
164 "R_ARM_THM_ABS5", /* name */
165 FALSE, /* partial_inplace */
166 0x000007e0, /* src_mask */
167 0x000007e0, /* dst_mask */
168 FALSE), /* pcrel_offset */
169
170 /* 8 bit absolute */
171 HOWTO (R_ARM_ABS8, /* type */
172 0, /* rightshift */
173 0, /* size (0 = byte, 1 = short, 2 = long) */
174 8, /* bitsize */
175 FALSE, /* pc_relative */
176 0, /* bitpos */
177 complain_overflow_bitfield,/* complain_on_overflow */
178 bfd_elf_generic_reloc, /* special_function */
179 "R_ARM_ABS8", /* name */
180 FALSE, /* partial_inplace */
181 0x000000ff, /* src_mask */
182 0x000000ff, /* dst_mask */
183 FALSE), /* pcrel_offset */
184
185 HOWTO (R_ARM_SBREL32, /* type */
186 0, /* rightshift */
187 2, /* size (0 = byte, 1 = short, 2 = long) */
188 32, /* bitsize */
189 FALSE, /* pc_relative */
190 0, /* bitpos */
191 complain_overflow_dont,/* complain_on_overflow */
192 bfd_elf_generic_reloc, /* special_function */
193 "R_ARM_SBREL32", /* name */
194 FALSE, /* partial_inplace */
195 0xffffffff, /* src_mask */
196 0xffffffff, /* dst_mask */
197 FALSE), /* pcrel_offset */
198
199 HOWTO (R_ARM_THM_PC22, /* type */
200 1, /* rightshift */
201 2, /* size (0 = byte, 1 = short, 2 = long) */
202 23, /* bitsize */
203 TRUE, /* pc_relative */
204 0, /* bitpos */
205 complain_overflow_signed,/* complain_on_overflow */
206 bfd_elf_generic_reloc, /* special_function */
207 "R_ARM_THM_PC22", /* name */
208 FALSE, /* partial_inplace */
209 0x07ff07ff, /* src_mask */
210 0x07ff07ff, /* dst_mask */
211 TRUE), /* pcrel_offset */
212
213 HOWTO (R_ARM_THM_PC8, /* type */
214 1, /* rightshift */
215 1, /* size (0 = byte, 1 = short, 2 = long) */
216 8, /* bitsize */
217 TRUE, /* pc_relative */
218 0, /* bitpos */
219 complain_overflow_signed,/* complain_on_overflow */
220 bfd_elf_generic_reloc, /* special_function */
221 "R_ARM_THM_PC8", /* name */
222 FALSE, /* partial_inplace */
223 0x000000ff, /* src_mask */
224 0x000000ff, /* dst_mask */
225 TRUE), /* pcrel_offset */
226
227 HOWTO (R_ARM_AMP_VCALL9, /* type */
228 1, /* rightshift */
229 1, /* size (0 = byte, 1 = short, 2 = long) */
230 8, /* bitsize */
231 TRUE, /* pc_relative */
232 0, /* bitpos */
233 complain_overflow_signed,/* complain_on_overflow */
234 bfd_elf_generic_reloc, /* special_function */
235 "R_ARM_AMP_VCALL9", /* name */
236 FALSE, /* partial_inplace */
237 0x000000ff, /* src_mask */
238 0x000000ff, /* dst_mask */
239 TRUE), /* pcrel_offset */
240
241 HOWTO (R_ARM_SWI24, /* type */
242 0, /* rightshift */
243 0, /* size (0 = byte, 1 = short, 2 = long) */
244 0, /* bitsize */
245 FALSE, /* pc_relative */
246 0, /* bitpos */
247 complain_overflow_signed,/* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_ARM_SWI24", /* name */
250 FALSE, /* partial_inplace */
251 0x00000000, /* src_mask */
252 0x00000000, /* dst_mask */
253 FALSE), /* pcrel_offset */
254
255 HOWTO (R_ARM_THM_SWI8, /* type */
256 0, /* rightshift */
257 0, /* size (0 = byte, 1 = short, 2 = long) */
258 0, /* bitsize */
259 FALSE, /* pc_relative */
260 0, /* bitpos */
261 complain_overflow_signed,/* complain_on_overflow */
262 bfd_elf_generic_reloc, /* special_function */
263 "R_ARM_SWI8", /* name */
264 FALSE, /* partial_inplace */
265 0x00000000, /* src_mask */
266 0x00000000, /* dst_mask */
267 FALSE), /* pcrel_offset */
268
269 /* BLX instruction for the ARM. */
270 HOWTO (R_ARM_XPC25, /* type */
271 2, /* rightshift */
272 2, /* size (0 = byte, 1 = short, 2 = long) */
273 25, /* bitsize */
274 TRUE, /* pc_relative */
275 0, /* bitpos */
276 complain_overflow_signed,/* complain_on_overflow */
277 bfd_elf_generic_reloc, /* special_function */
278 "R_ARM_XPC25", /* name */
279 FALSE, /* partial_inplace */
280 0x00ffffff, /* src_mask */
281 0x00ffffff, /* dst_mask */
282 TRUE), /* pcrel_offset */
283
284 /* BLX instruction for the Thumb. */
285 HOWTO (R_ARM_THM_XPC22, /* type */
286 2, /* rightshift */
287 2, /* size (0 = byte, 1 = short, 2 = long) */
288 22, /* bitsize */
289 TRUE, /* pc_relative */
290 0, /* bitpos */
291 complain_overflow_signed,/* complain_on_overflow */
292 bfd_elf_generic_reloc, /* special_function */
293 "R_ARM_THM_XPC22", /* name */
294 FALSE, /* partial_inplace */
295 0x07ff07ff, /* src_mask */
296 0x07ff07ff, /* dst_mask */
297 TRUE), /* pcrel_offset */
298
299 /* These next three relocs are not defined, but we need to fill the space. */
300
301 HOWTO (R_ARM_NONE, /* type */
302 0, /* rightshift */
303 0, /* size (0 = byte, 1 = short, 2 = long) */
304 0, /* bitsize */
305 FALSE, /* pc_relative */
306 0, /* bitpos */
307 complain_overflow_dont,/* complain_on_overflow */
308 bfd_elf_generic_reloc, /* special_function */
309 "R_ARM_unknown_17", /* name */
310 FALSE, /* partial_inplace */
311 0, /* src_mask */
312 0, /* dst_mask */
313 FALSE), /* pcrel_offset */
314
315 HOWTO (R_ARM_NONE, /* type */
316 0, /* rightshift */
317 0, /* size (0 = byte, 1 = short, 2 = long) */
318 0, /* bitsize */
319 FALSE, /* pc_relative */
320 0, /* bitpos */
321 complain_overflow_dont,/* complain_on_overflow */
322 bfd_elf_generic_reloc, /* special_function */
323 "R_ARM_unknown_18", /* name */
324 FALSE, /* partial_inplace */
325 0, /* src_mask */
326 0, /* dst_mask */
327 FALSE), /* pcrel_offset */
328
329 HOWTO (R_ARM_NONE, /* type */
330 0, /* rightshift */
331 0, /* size (0 = byte, 1 = short, 2 = long) */
332 0, /* bitsize */
333 FALSE, /* pc_relative */
334 0, /* bitpos */
335 complain_overflow_dont,/* complain_on_overflow */
336 bfd_elf_generic_reloc, /* special_function */
337 "R_ARM_unknown_19", /* name */
338 FALSE, /* partial_inplace */
339 0, /* src_mask */
340 0, /* dst_mask */
341 FALSE), /* pcrel_offset */
342
343 /* Relocs used in ARM Linux */
344
345 HOWTO (R_ARM_COPY, /* type */
346 0, /* rightshift */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
348 32, /* bitsize */
349 FALSE, /* pc_relative */
350 0, /* bitpos */
351 complain_overflow_bitfield,/* complain_on_overflow */
352 bfd_elf_generic_reloc, /* special_function */
353 "R_ARM_COPY", /* name */
354 TRUE, /* partial_inplace */
355 0xffffffff, /* src_mask */
356 0xffffffff, /* dst_mask */
357 FALSE), /* pcrel_offset */
358
359 HOWTO (R_ARM_GLOB_DAT, /* type */
360 0, /* rightshift */
361 2, /* size (0 = byte, 1 = short, 2 = long) */
362 32, /* bitsize */
363 FALSE, /* pc_relative */
364 0, /* bitpos */
365 complain_overflow_bitfield,/* complain_on_overflow */
366 bfd_elf_generic_reloc, /* special_function */
367 "R_ARM_GLOB_DAT", /* name */
368 TRUE, /* partial_inplace */
369 0xffffffff, /* src_mask */
370 0xffffffff, /* dst_mask */
371 FALSE), /* pcrel_offset */
372
373 HOWTO (R_ARM_JUMP_SLOT, /* type */
374 0, /* rightshift */
375 2, /* size (0 = byte, 1 = short, 2 = long) */
376 32, /* bitsize */
377 FALSE, /* pc_relative */
378 0, /* bitpos */
379 complain_overflow_bitfield,/* complain_on_overflow */
380 bfd_elf_generic_reloc, /* special_function */
381 "R_ARM_JUMP_SLOT", /* name */
382 TRUE, /* partial_inplace */
383 0xffffffff, /* src_mask */
384 0xffffffff, /* dst_mask */
385 FALSE), /* pcrel_offset */
386
387 HOWTO (R_ARM_RELATIVE, /* type */
388 0, /* rightshift */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
390 32, /* bitsize */
391 FALSE, /* pc_relative */
392 0, /* bitpos */
393 complain_overflow_bitfield,/* complain_on_overflow */
394 bfd_elf_generic_reloc, /* special_function */
395 "R_ARM_RELATIVE", /* name */
396 TRUE, /* partial_inplace */
397 0xffffffff, /* src_mask */
398 0xffffffff, /* dst_mask */
399 FALSE), /* pcrel_offset */
400
401 HOWTO (R_ARM_GOTOFF, /* type */
402 0, /* rightshift */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
404 32, /* bitsize */
405 FALSE, /* pc_relative */
406 0, /* bitpos */
407 complain_overflow_bitfield,/* complain_on_overflow */
408 bfd_elf_generic_reloc, /* special_function */
409 "R_ARM_GOTOFF", /* name */
410 TRUE, /* partial_inplace */
411 0xffffffff, /* src_mask */
412 0xffffffff, /* dst_mask */
413 FALSE), /* pcrel_offset */
414
415 HOWTO (R_ARM_GOTPC, /* type */
416 0, /* rightshift */
417 2, /* size (0 = byte, 1 = short, 2 = long) */
418 32, /* bitsize */
419 TRUE, /* pc_relative */
420 0, /* bitpos */
421 complain_overflow_bitfield,/* complain_on_overflow */
422 bfd_elf_generic_reloc, /* special_function */
423 "R_ARM_GOTPC", /* name */
424 TRUE, /* partial_inplace */
425 0xffffffff, /* src_mask */
426 0xffffffff, /* dst_mask */
427 TRUE), /* pcrel_offset */
428
429 HOWTO (R_ARM_GOT32, /* type */
430 0, /* rightshift */
431 2, /* size (0 = byte, 1 = short, 2 = long) */
432 32, /* bitsize */
433 FALSE, /* pc_relative */
434 0, /* bitpos */
435 complain_overflow_bitfield,/* complain_on_overflow */
436 bfd_elf_generic_reloc, /* special_function */
437 "R_ARM_GOT32", /* name */
438 TRUE, /* partial_inplace */
439 0xffffffff, /* src_mask */
440 0xffffffff, /* dst_mask */
441 FALSE), /* pcrel_offset */
442
443 HOWTO (R_ARM_PLT32, /* type */
444 2, /* rightshift */
445 2, /* size (0 = byte, 1 = short, 2 = long) */
446 26, /* bitsize */
447 TRUE, /* pc_relative */
448 0, /* bitpos */
449 complain_overflow_bitfield,/* complain_on_overflow */
450 bfd_elf_generic_reloc, /* special_function */
451 "R_ARM_PLT32", /* name */
452 TRUE, /* partial_inplace */
453 0x00ffffff, /* src_mask */
454 0x00ffffff, /* dst_mask */
455 TRUE), /* pcrel_offset */
456
457 HOWTO (R_ARM_CALL, /* type */
458 2, /* rightshift */
459 2, /* size (0 = byte, 1 = short, 2 = long) */
460 24, /* bitsize */
461 TRUE, /* pc_relative */
462 0, /* bitpos */
463 complain_overflow_signed,/* complain_on_overflow */
464 bfd_elf_generic_reloc, /* special_function */
465 "R_ARM_CALL", /* name */
466 FALSE, /* partial_inplace */
467 0x00ffffff, /* src_mask */
468 0x00ffffff, /* dst_mask */
469 TRUE), /* pcrel_offset */
470
471 HOWTO (R_ARM_JUMP24, /* type */
472 2, /* rightshift */
473 2, /* size (0 = byte, 1 = short, 2 = long) */
474 24, /* bitsize */
475 TRUE, /* pc_relative */
476 0, /* bitpos */
477 complain_overflow_signed,/* complain_on_overflow */
478 bfd_elf_generic_reloc, /* special_function */
479 "R_ARM_JUMP24", /* name */
480 FALSE, /* partial_inplace */
481 0x00ffffff, /* src_mask */
482 0x00ffffff, /* dst_mask */
483 TRUE), /* pcrel_offset */
484
485 HOWTO (R_ARM_NONE, /* type */
486 0, /* rightshift */
487 0, /* size (0 = byte, 1 = short, 2 = long) */
488 0, /* bitsize */
489 FALSE, /* pc_relative */
490 0, /* bitpos */
491 complain_overflow_dont,/* complain_on_overflow */
492 bfd_elf_generic_reloc, /* special_function */
493 "R_ARM_unknown_30", /* name */
494 FALSE, /* partial_inplace */
495 0, /* src_mask */
496 0, /* dst_mask */
497 FALSE), /* pcrel_offset */
498
499 HOWTO (R_ARM_NONE, /* type */
500 0, /* rightshift */
501 0, /* size (0 = byte, 1 = short, 2 = long) */
502 0, /* bitsize */
503 FALSE, /* pc_relative */
504 0, /* bitpos */
505 complain_overflow_dont,/* complain_on_overflow */
506 bfd_elf_generic_reloc, /* special_function */
507 "R_ARM_unknown_31", /* name */
508 FALSE, /* partial_inplace */
509 0, /* src_mask */
510 0, /* dst_mask */
511 FALSE), /* pcrel_offset */
512
513 HOWTO (R_ARM_ALU_PCREL7_0, /* type */
514 0, /* rightshift */
515 2, /* size (0 = byte, 1 = short, 2 = long) */
516 12, /* bitsize */
517 TRUE, /* pc_relative */
518 0, /* bitpos */
519 complain_overflow_dont,/* complain_on_overflow */
520 bfd_elf_generic_reloc, /* special_function */
521 "R_ARM_ALU_PCREL_7_0", /* name */
522 FALSE, /* partial_inplace */
523 0x00000fff, /* src_mask */
524 0x00000fff, /* dst_mask */
525 TRUE), /* pcrel_offset */
526
527 HOWTO (R_ARM_ALU_PCREL15_8, /* type */
528 0, /* rightshift */
529 2, /* size (0 = byte, 1 = short, 2 = long) */
530 12, /* bitsize */
531 TRUE, /* pc_relative */
532 8, /* bitpos */
533 complain_overflow_dont,/* complain_on_overflow */
534 bfd_elf_generic_reloc, /* special_function */
535 "R_ARM_ALU_PCREL_15_8",/* name */
536 FALSE, /* partial_inplace */
537 0x00000fff, /* src_mask */
538 0x00000fff, /* dst_mask */
539 TRUE), /* pcrel_offset */
540
541 HOWTO (R_ARM_ALU_PCREL23_15, /* type */
542 0, /* rightshift */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
544 12, /* bitsize */
545 TRUE, /* pc_relative */
546 16, /* bitpos */
547 complain_overflow_dont,/* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 "R_ARM_ALU_PCREL_23_15",/* name */
550 FALSE, /* partial_inplace */
551 0x00000fff, /* src_mask */
552 0x00000fff, /* dst_mask */
553 TRUE), /* pcrel_offset */
554
555 HOWTO (R_ARM_LDR_SBREL_11_0, /* type */
556 0, /* rightshift */
557 2, /* size (0 = byte, 1 = short, 2 = long) */
558 12, /* bitsize */
559 FALSE, /* pc_relative */
560 0, /* bitpos */
561 complain_overflow_dont,/* complain_on_overflow */
562 bfd_elf_generic_reloc, /* special_function */
563 "R_ARM_LDR_SBREL_11_0",/* name */
564 FALSE, /* partial_inplace */
565 0x00000fff, /* src_mask */
566 0x00000fff, /* dst_mask */
567 FALSE), /* pcrel_offset */
568
569 HOWTO (R_ARM_ALU_SBREL_19_12, /* type */
570 0, /* rightshift */
571 2, /* size (0 = byte, 1 = short, 2 = long) */
572 8, /* bitsize */
573 FALSE, /* pc_relative */
574 12, /* bitpos */
575 complain_overflow_dont,/* complain_on_overflow */
576 bfd_elf_generic_reloc, /* special_function */
577 "R_ARM_ALU_SBREL_19_12",/* name */
578 FALSE, /* partial_inplace */
579 0x000ff000, /* src_mask */
580 0x000ff000, /* dst_mask */
581 FALSE), /* pcrel_offset */
582
583 HOWTO (R_ARM_ALU_SBREL_27_20, /* type */
584 0, /* rightshift */
585 2, /* size (0 = byte, 1 = short, 2 = long) */
586 8, /* bitsize */
587 FALSE, /* pc_relative */
588 20, /* bitpos */
589 complain_overflow_dont,/* complain_on_overflow */
590 bfd_elf_generic_reloc, /* special_function */
591 "R_ARM_ALU_SBREL_27_20",/* name */
592 FALSE, /* partial_inplace */
593 0x0ff00000, /* src_mask */
594 0x0ff00000, /* dst_mask */
595 FALSE), /* pcrel_offset */
596
597 HOWTO (R_ARM_TARGET1, /* type */
598 0, /* rightshift */
599 2, /* size (0 = byte, 1 = short, 2 = long) */
600 32, /* bitsize */
601 FALSE, /* pc_relative */
602 0, /* bitpos */
603 complain_overflow_dont,/* complain_on_overflow */
604 bfd_elf_generic_reloc, /* special_function */
605 "R_ARM_TARGET1", /* name */
606 FALSE, /* partial_inplace */
607 0xffffffff, /* src_mask */
608 0xffffffff, /* dst_mask */
609 FALSE), /* pcrel_offset */
610
611 HOWTO (R_ARM_ROSEGREL32, /* type */
612 0, /* rightshift */
613 2, /* size (0 = byte, 1 = short, 2 = long) */
614 32, /* bitsize */
615 FALSE, /* pc_relative */
616 0, /* bitpos */
617 complain_overflow_dont,/* complain_on_overflow */
618 bfd_elf_generic_reloc, /* special_function */
619 "R_ARM_ROSEGREL32", /* name */
620 FALSE, /* partial_inplace */
621 0xffffffff, /* src_mask */
622 0xffffffff, /* dst_mask */
623 FALSE), /* pcrel_offset */
624
625 HOWTO (R_ARM_V4BX, /* type */
626 0, /* rightshift */
627 2, /* size (0 = byte, 1 = short, 2 = long) */
628 32, /* bitsize */
629 FALSE, /* pc_relative */
630 0, /* bitpos */
631 complain_overflow_dont,/* complain_on_overflow */
632 bfd_elf_generic_reloc, /* special_function */
633 "R_ARM_V4BX", /* name */
634 FALSE, /* partial_inplace */
635 0xffffffff, /* src_mask */
636 0xffffffff, /* dst_mask */
637 FALSE), /* pcrel_offset */
638
639 HOWTO (R_ARM_TARGET2, /* type */
640 0, /* rightshift */
641 2, /* size (0 = byte, 1 = short, 2 = long) */
642 32, /* bitsize */
643 FALSE, /* pc_relative */
644 0, /* bitpos */
645 complain_overflow_signed,/* complain_on_overflow */
646 bfd_elf_generic_reloc, /* special_function */
647 "R_ARM_TARGET2", /* name */
648 FALSE, /* partial_inplace */
649 0xffffffff, /* src_mask */
650 0xffffffff, /* dst_mask */
651 TRUE), /* pcrel_offset */
652
653 HOWTO (R_ARM_PREL31, /* type */
654 0, /* rightshift */
655 2, /* size (0 = byte, 1 = short, 2 = long) */
656 31, /* bitsize */
657 TRUE, /* pc_relative */
658 0, /* bitpos */
659 complain_overflow_signed,/* complain_on_overflow */
660 bfd_elf_generic_reloc, /* special_function */
661 "R_ARM_PREL31", /* name */
662 FALSE, /* partial_inplace */
663 0x7fffffff, /* src_mask */
664 0x7fffffff, /* dst_mask */
665 TRUE), /* pcrel_offset */
666};
667
668 /* GNU extension to record C++ vtable hierarchy */
669static reloc_howto_type elf32_arm_vtinherit_howto =
670 HOWTO (R_ARM_GNU_VTINHERIT, /* type */
671 0, /* rightshift */
672 2, /* size (0 = byte, 1 = short, 2 = long) */
673 0, /* bitsize */
674 FALSE, /* pc_relative */
675 0, /* bitpos */
676 complain_overflow_dont, /* complain_on_overflow */
677 NULL, /* special_function */
678 "R_ARM_GNU_VTINHERIT", /* name */
679 FALSE, /* partial_inplace */
680 0, /* src_mask */
681 0, /* dst_mask */
682 FALSE); /* pcrel_offset */
683
684 /* GNU extension to record C++ vtable member usage */
685static reloc_howto_type elf32_arm_vtentry_howto =
686 HOWTO (R_ARM_GNU_VTENTRY, /* type */
687 0, /* rightshift */
688 2, /* size (0 = byte, 1 = short, 2 = long) */
689 0, /* bitsize */
690 FALSE, /* pc_relative */
691 0, /* bitpos */
692 complain_overflow_dont, /* complain_on_overflow */
693 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
694 "R_ARM_GNU_VTENTRY", /* name */
695 FALSE, /* partial_inplace */
696 0, /* src_mask */
697 0, /* dst_mask */
698 FALSE); /* pcrel_offset */
699
700 /* 12 bit pc relative */
701static reloc_howto_type elf32_arm_thm_pc11_howto =
702 HOWTO (R_ARM_THM_PC11, /* type */
703 1, /* rightshift */
704 1, /* size (0 = byte, 1 = short, 2 = long) */
705 11, /* bitsize */
706 TRUE, /* pc_relative */
707 0, /* bitpos */
708 complain_overflow_signed, /* complain_on_overflow */
709 bfd_elf_generic_reloc, /* special_function */
710 "R_ARM_THM_PC11", /* name */
711 FALSE, /* partial_inplace */
712 0x000007ff, /* src_mask */
713 0x000007ff, /* dst_mask */
714 TRUE); /* pcrel_offset */
715
716 /* 12 bit pc relative */
717static reloc_howto_type elf32_arm_thm_pc9_howto =
718 HOWTO (R_ARM_THM_PC9, /* type */
719 1, /* rightshift */
720 1, /* size (0 = byte, 1 = short, 2 = long) */
721 8, /* bitsize */
722 TRUE, /* pc_relative */
723 0, /* bitpos */
724 complain_overflow_signed, /* complain_on_overflow */
725 bfd_elf_generic_reloc, /* special_function */
726 "R_ARM_THM_PC9", /* name */
727 FALSE, /* partial_inplace */
728 0x000000ff, /* src_mask */
729 0x000000ff, /* dst_mask */
730 TRUE); /* pcrel_offset */
731
732/* Place relative GOT-indirect. */
733static reloc_howto_type elf32_arm_got_prel =
734 HOWTO (R_ARM_GOT_PREL, /* type */
735 0, /* rightshift */
736 2, /* size (0 = byte, 1 = short, 2 = long) */
737 32, /* bitsize */
738 TRUE, /* pc_relative */
739 0, /* bitpos */
740 complain_overflow_dont, /* complain_on_overflow */
741 bfd_elf_generic_reloc, /* special_function */
742 "R_ARM_GOT_PREL", /* name */
743 FALSE, /* partial_inplace */
744 0xffffffff, /* src_mask */
745 0xffffffff, /* dst_mask */
746 TRUE); /* pcrel_offset */
747
748/* Currently unused relocations. */
749static reloc_howto_type elf32_arm_r_howto[4] =
750{
751 HOWTO (R_ARM_RREL32, /* type */
752 0, /* rightshift */
753 0, /* size (0 = byte, 1 = short, 2 = long) */
754 0, /* bitsize */
755 FALSE, /* pc_relative */
756 0, /* bitpos */
757 complain_overflow_dont,/* complain_on_overflow */
758 bfd_elf_generic_reloc, /* special_function */
759 "R_ARM_RREL32", /* name */
760 FALSE, /* partial_inplace */
761 0, /* src_mask */
762 0, /* dst_mask */
763 FALSE), /* pcrel_offset */
764
765 HOWTO (R_ARM_RABS32, /* type */
766 0, /* rightshift */
767 0, /* size (0 = byte, 1 = short, 2 = long) */
768 0, /* bitsize */
769 FALSE, /* pc_relative */
770 0, /* bitpos */
771 complain_overflow_dont,/* complain_on_overflow */
772 bfd_elf_generic_reloc, /* special_function */
773 "R_ARM_RABS32", /* name */
774 FALSE, /* partial_inplace */
775 0, /* src_mask */
776 0, /* dst_mask */
777 FALSE), /* pcrel_offset */
778
779 HOWTO (R_ARM_RPC24, /* type */
780 0, /* rightshift */
781 0, /* size (0 = byte, 1 = short, 2 = long) */
782 0, /* bitsize */
783 FALSE, /* pc_relative */
784 0, /* bitpos */
785 complain_overflow_dont,/* complain_on_overflow */
786 bfd_elf_generic_reloc, /* special_function */
787 "R_ARM_RPC24", /* name */
788 FALSE, /* partial_inplace */
789 0, /* src_mask */
790 0, /* dst_mask */
791 FALSE), /* pcrel_offset */
792
793 HOWTO (R_ARM_RBASE, /* type */
794 0, /* rightshift */
795 0, /* size (0 = byte, 1 = short, 2 = long) */
796 0, /* bitsize */
797 FALSE, /* pc_relative */
798 0, /* bitpos */
799 complain_overflow_dont,/* complain_on_overflow */
800 bfd_elf_generic_reloc, /* special_function */
801 "R_ARM_RBASE", /* name */
802 FALSE, /* partial_inplace */
803 0, /* src_mask */
804 0, /* dst_mask */
805 FALSE) /* pcrel_offset */
806};
807
808static reloc_howto_type *
809elf32_arm_howto_from_type (unsigned int r_type)
810{
811 if (r_type < NUM_ELEM (elf32_arm_howto_table))
812 return &elf32_arm_howto_table[r_type];
813
814 switch (r_type)
815 {
816 case R_ARM_GOT_PREL:
817 return &elf32_arm_got_prel;
818
819 case R_ARM_GNU_VTINHERIT:
820 return &elf32_arm_vtinherit_howto;
821
822 case R_ARM_GNU_VTENTRY:
823 return &elf32_arm_vtentry_howto;
824
825 case R_ARM_THM_PC11:
826 return &elf32_arm_thm_pc11_howto;
827
828 case R_ARM_THM_PC9:
829 return &elf32_arm_thm_pc9_howto;
830
831 case R_ARM_RREL32:
832 case R_ARM_RABS32:
833 case R_ARM_RPC24:
834 case R_ARM_RBASE:
835 return &elf32_arm_r_howto[r_type - R_ARM_RREL32];
836
837 default:
838 return NULL;
839 }
840}
841
842static void
843elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
844 Elf_Internal_Rela * elf_reloc)
845{
846 unsigned int r_type;
847
848 r_type = ELF32_R_TYPE (elf_reloc->r_info);
849 bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
850}
851
852struct elf32_arm_reloc_map
853 {
854 bfd_reloc_code_real_type bfd_reloc_val;
855 unsigned char elf_reloc_val;
856 };
857
858/* All entries in this list must also be present in elf32_arm_howto_table. */
859static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
860 {
861 {BFD_RELOC_NONE, R_ARM_NONE},
862 {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
863 {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
864 {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
865 {BFD_RELOC_32, R_ARM_ABS32},
866 {BFD_RELOC_32_PCREL, R_ARM_REL32},
867 {BFD_RELOC_8, R_ARM_ABS8},
868 {BFD_RELOC_16, R_ARM_ABS16},
869 {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
870 {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
871 {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22},
872 {BFD_RELOC_ARM_COPY, R_ARM_COPY},
873 {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
874 {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
875 {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
876 {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF},
877 {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
878 {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
879 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
880 {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1},
881 {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32},
882 {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32},
883 {BFD_RELOC_ARM_PREL31, R_ARM_PREL31},
884 {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2}
885 };
886
887static reloc_howto_type *
888elf32_arm_reloc_type_lookup (abfd, code)
889 bfd *abfd ATTRIBUTE_UNUSED;
890 bfd_reloc_code_real_type code;
891{
892 unsigned int i;
893
894 switch (code)
895 {
896 case BFD_RELOC_VTABLE_INHERIT:
897 return & elf32_arm_vtinherit_howto;
898
899 case BFD_RELOC_VTABLE_ENTRY:
900 return & elf32_arm_vtentry_howto;
901
902 case BFD_RELOC_THUMB_PCREL_BRANCH12:
903 return & elf32_arm_thm_pc11_howto;
904
905 case BFD_RELOC_THUMB_PCREL_BRANCH9:
906 return & elf32_arm_thm_pc9_howto;
907
908 default:
909 for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
910 if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
911 return & elf32_arm_howto_table[elf32_arm_reloc_map[i].elf_reloc_val];
912
913 return NULL;
914 }
915}
916
917/* Support for core dump NOTE sections */
918static bfd_boolean
919elf32_arm_nabi_grok_prstatus (abfd, note)
920 bfd *abfd;
921 Elf_Internal_Note *note;
922{
923 int offset;
924 size_t size;
925
926 switch (note->descsz)
927 {
928 default:
929 return FALSE;
930
931 case 148: /* Linux/ARM 32-bit*/
932 /* pr_cursig */
933 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
934
935 /* pr_pid */
936 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
937
938 /* pr_reg */
939 offset = 72;
940 size = 72;
941
942 break;
943 }
944
945 /* Make a ".reg/999" section. */
946 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
947 size, note->descpos + offset);
948}
949
950static bfd_boolean
951elf32_arm_nabi_grok_psinfo (abfd, note)
952 bfd *abfd;
953 Elf_Internal_Note *note;
954{
955 switch (note->descsz)
956 {
957 default:
958 return FALSE;
959
960 case 124: /* Linux/ARM elf_prpsinfo */
961 elf_tdata (abfd)->core_program
962 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
963 elf_tdata (abfd)->core_command
964 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
965 }
966
967 /* Note that for some reason, a spurious space is tacked
968 onto the end of the args in some (at least one anyway)
969 implementations, so strip it off if it exists. */
970
971 {
972 char *command = elf_tdata (abfd)->core_command;
973 int n = strlen (command);
974
975 if (0 < n && command[n - 1] == ' ')
976 command[n - 1] = '\0';
977 }
978
979 return TRUE;
980}
981
982#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
983#define TARGET_LITTLE_NAME "elf32-littlearm"
984#define TARGET_BIG_SYM bfd_elf32_bigarm_vec
985#define TARGET_BIG_NAME "elf32-bigarm"
986
987#define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
988#define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
989
acf8aed4
AM		 990#ifndef USE_REL
991#define USE_REL 0
992#endif
993
252b5132
RH		 994typedef unsigned long int insn32;
995typedef unsigned short int insn16;
996
8cb51566 997/* In lieu of proper flags, assume all EABIv4 objects are interworkable. */
57e8b36a 998#define INTERWORK_FLAG(abfd) \
8cb51566 999 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) == EF_ARM_EABI_VER4 \
85a84e7a 1000 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
9b485d32 1001
252b5132
RH		 1002/* The linker script knows the section names for placement.
1003 The entry_names are used to do simple name mangling on the stubs.
1004 Given a function name, and its type, the stub can be found. The
9b485d32 1005 name can be changed. The only requirement is the %s be present. */
252b5132
RH		 1006#define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1007#define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1008
1009#define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1010#define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1011
1012/* The name of the dynamic interpreter. This is put in the .interp
1013 section. */
1014#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1015
5e681ec4
PB		 1016#ifdef FOUR_WORD_PLT
1017
252b5132
RH		 1018/* The first entry in a procedure linkage table looks like
1019 this. It is set up so that any shared library function that is
59f2c4e7 1020 called before the relocation has been set up calls the dynamic
9b485d32 1021 linker first. */
e5a52504 1022static const bfd_vma elf32_arm_plt0_entry [] =
5e681ec4
PB		 1023 {
1024 0xe52de004, /* str lr, [sp, #-4]! */
1025 0xe59fe010, /* ldr lr, [pc, #16] */
1026 0xe08fe00e, /* add lr, pc, lr */
1027 0xe5bef008, /* ldr pc, [lr, #8]! */
1028 };
1029
1030/* Subsequent entries in a procedure linkage table look like
1031 this. */
e5a52504 1032static const bfd_vma elf32_arm_plt_entry [] =
5e681ec4
PB		 1033 {
1034 0xe28fc600, /* add ip, pc, #NN */
1035 0xe28cca00, /* add ip, ip, #NN */
1036 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1037 0x00000000, /* unused */
1038 };
1039
1040#else
1041
5e681ec4
PB		 1042/* The first entry in a procedure linkage table looks like
1043 this. It is set up so that any shared library function that is
1044 called before the relocation has been set up calls the dynamic
1045 linker first. */
e5a52504 1046static const bfd_vma elf32_arm_plt0_entry [] =
917583ad 1047 {
5e681ec4
PB		 1048 0xe52de004, /* str lr, [sp, #-4]! */
1049 0xe59fe004, /* ldr lr, [pc, #4] */
1050 0xe08fe00e, /* add lr, pc, lr */
1051 0xe5bef008, /* ldr pc, [lr, #8]! */
1052 0x00000000, /* &GOT[0] - . */
917583ad 1053 };
252b5132
RH		 1054
1055/* Subsequent entries in a procedure linkage table look like
1056 this. */
e5a52504 1057static const bfd_vma elf32_arm_plt_entry [] =
5e681ec4
PB		 1058 {
1059 0xe28fc600, /* add ip, pc, #0xNN00000 */
1060 0xe28cca00, /* add ip, ip, #0xNN000 */
1061 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1062 };
1063
1064#endif
252b5132 1065
b7693d02
DJ		 1066/* An initial stub used if the PLT entry is referenced from Thumb code. */
1067#define PLT_THUMB_STUB_SIZE 4
1068static const bfd_vma elf32_arm_plt_thumb_stub [] =
1069 {
1070 0x4778, /* bx pc */
1071 0x46c0 /* nop */
1072 };
1073
e5a52504
MM		 1074/* The entries in a PLT when using a DLL-based target with multiple
1075 address spaces. */
1076static const bfd_vma elf32_arm_symbian_plt_entry [] =
1077 {
83a358aa 1078 0xe51ff004, /* ldr pc, [pc, #-4] */
e5a52504
MM		 1079 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
1080 };
1081
e489d0ae
PB		 1082/* Used to build a map of a section. This is required for mixed-endian
1083 code/data. */
1084
1085typedef struct elf32_elf_section_map
1086{
1087 bfd_vma vma;
1088 char type;
1089}
1090elf32_arm_section_map;
1091
1092struct _arm_elf_section_data
1093{
1094 struct bfd_elf_section_data elf;
1095 int mapcount;
1096 elf32_arm_section_map *map;
1097};
1098
1099#define elf32_arm_section_data(sec) \
1100 ((struct _arm_elf_section_data *) elf_section_data (sec))
1101
252b5132
RH		 1102/* The ARM linker needs to keep track of the number of relocs that it
1103 decides to copy in check_relocs for each symbol. This is so that
1104 it can discard PC relative relocs if it doesn't need them when
1105 linking with -Bsymbolic. We store the information in a field
1106 extending the regular ELF linker hash table. */
1107
1108/* This structure keeps track of the number of PC relative relocs we
1109 have copied for a given symbol. */
5e681ec4 1110struct elf32_arm_relocs_copied
917583ad
NC		 1111 {
1112 /* Next section. */
5e681ec4 1113 struct elf32_arm_relocs_copied * next;
917583ad
NC		 1114 /* A section in dynobj. */
1115 asection * section;
1116 /* Number of relocs copied in this section. */
1117 bfd_size_type count;
1118 };
252b5132 1119
ba96a88f 1120/* Arm ELF linker hash entry. */
252b5132 1121struct elf32_arm_link_hash_entry
917583ad
NC		 1122 {
1123 struct elf_link_hash_entry root;
252b5132 1124
917583ad 1125 /* Number of PC relative relocs copied for this symbol. */
5e681ec4 1126 struct elf32_arm_relocs_copied * relocs_copied;
b7693d02
DJ		 1127
1128 /* We reference count Thumb references to a PLT entry separately,
1129 so that we can emit the Thumb trampoline only if needed. */
1130 bfd_signed_vma plt_thumb_refcount;
1131
1132 /* Since PLT entries have variable size if the Thumb prologue is
1133 used, we need to record the index into .got.plt instead of
1134 recomputing it from the PLT offset. */
1135 bfd_signed_vma plt_got_offset;
917583ad 1136 };
252b5132 1137
252b5132 1138/* Traverse an arm ELF linker hash table. */
252b5132
RH		 1139#define elf32_arm_link_hash_traverse(table, func, info) \
1140 (elf_link_hash_traverse \
1141 (&(table)->root, \
b7693d02 1142 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
252b5132
RH		 1143 (info)))
1144
1145/* Get the ARM elf linker hash table from a link_info structure. */
1146#define elf32_arm_hash_table(info) \
1147 ((struct elf32_arm_link_hash_table *) ((info)->hash))
1148
9b485d32 1149/* ARM ELF linker hash table. */
252b5132 1150struct elf32_arm_link_hash_table
917583ad
NC		 1151 {
1152 /* The main hash table. */
1153 struct elf_link_hash_table root;
252b5132 1154
4cc11e76 1155 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
dc810e39 1156 bfd_size_type thumb_glue_size;
252b5132 1157
4cc11e76 1158 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
dc810e39 1159 bfd_size_type arm_glue_size;
252b5132 1160
4cc11e76 1161 /* An arbitrary input BFD chosen to hold the glue sections. */
917583ad 1162 bfd * bfd_of_glue_owner;
ba96a88f 1163
e489d0ae
PB		 1164 /* Nonzero to output a BE8 image. */
1165 int byteswap_code;
1166
9c504268
PB		 1167 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
1168 Nonzero if R_ARM_TARGET1 means R_ARM_ABS32. */
1169 int target1_is_rel;
1170
eb043451
PB		 1171 /* The relocation to use for R_ARM_TARGET2 relocations. */
1172 int target2_reloc;
1173
e5a52504
MM		 1174 /* The number of bytes in the initial entry in the PLT. */
1175 bfd_size_type plt_header_size;
1176
1177 /* The number of bytes in the subsequent PLT etries. */
1178 bfd_size_type plt_entry_size;
1179
1180 /* True if the target system is Symbian OS. */
1181 int symbian_p;
1182
5e681ec4
PB		 1183 /* Short-cuts to get to dynamic linker sections. */
1184 asection *sgot;
1185 asection *sgotplt;
1186 asection *srelgot;
1187 asection *splt;
1188 asection *srelplt;
1189 asection *sdynbss;
1190 asection *srelbss;
1191
1192 /* Small local sym to section mapping cache. */
1193 struct sym_sec_cache sym_sec;
b7693d02
DJ		 1194
1195 /* For convenience in allocate_dynrelocs. */
1196 bfd * obfd;
917583ad 1197 };
252b5132 1198
780a67af
NC		 1199/* Create an entry in an ARM ELF linker hash table. */
1200
1201static struct bfd_hash_entry *
57e8b36a
NC		 1202elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
1203 struct bfd_hash_table * table,
1204 const char * string)
780a67af
NC		 1205{
1206 struct elf32_arm_link_hash_entry * ret =
1207 (struct elf32_arm_link_hash_entry *) entry;
1208
1209 /* Allocate the structure if it has not already been allocated by a
1210 subclass. */
1211 if (ret == (struct elf32_arm_link_hash_entry *) NULL)
57e8b36a
NC		 1212 ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
1213 if (ret == NULL)
780a67af
NC		 1214 return (struct bfd_hash_entry *) ret;
1215
1216 /* Call the allocation method of the superclass. */
1217 ret = ((struct elf32_arm_link_hash_entry *)
1218 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1219 table, string));
57e8b36a 1220 if (ret != NULL)
b7693d02
DJ		 1221 {
1222 ret->relocs_copied = NULL;
1223 ret->plt_thumb_refcount = 0;
1224 ret->plt_got_offset = -1;
1225 }
780a67af
NC		 1226
1227 return (struct bfd_hash_entry *) ret;
1228}
1229
5e681ec4
PB		 1230/* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up
1231 shortcuts to them in our hash table. */
1232
1233static bfd_boolean
57e8b36a 1234create_got_section (bfd *dynobj, struct bfd_link_info *info)
5e681ec4
PB		 1235{
1236 struct elf32_arm_link_hash_table *htab;
1237
e5a52504
MM		 1238 htab = elf32_arm_hash_table (info);
1239 /* BPABI objects never have a GOT, or associated sections. */
1240 if (htab->symbian_p)
1241 return TRUE;
1242
5e681ec4
PB		 1243 if (! _bfd_elf_create_got_section (dynobj, info))
1244 return FALSE;
1245
5e681ec4
PB		 1246 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1247 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1248 if (!htab->sgot || !htab->sgotplt)
1249 abort ();
1250
1251 htab->srelgot = bfd_make_section (dynobj, ".rel.got");
1252 if (htab->srelgot == NULL
1253 || ! bfd_set_section_flags (dynobj, htab->srelgot,
1254 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1255 | SEC_IN_MEMORY | SEC_LINKER_CREATED
1256 | SEC_READONLY))
1257 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
1258 return FALSE;
1259 return TRUE;
1260}
1261
1262/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
1263 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
1264 hash table. */
1265
1266static bfd_boolean
57e8b36a 1267elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5e681ec4
PB		 1268{
1269 struct elf32_arm_link_hash_table *htab;
1270
1271 htab = elf32_arm_hash_table (info);
1272 if (!htab->sgot && !create_got_section (dynobj, info))
1273 return FALSE;
1274
1275 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1276 return FALSE;
1277
1278 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
1279 htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt");
1280 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
1281 if (!info->shared)
1282 htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
1283
e5a52504
MM		 1284 if (!htab->splt
1285 || !htab->srelplt
1286 || !htab->sdynbss
5e681ec4
PB		 1287 || (!info->shared && !htab->srelbss))
1288 abort ();
1289
1290 return TRUE;
1291}
1292
1293/* Copy the extra info we tack onto an elf_link_hash_entry. */
1294
1295static void
1296elf32_arm_copy_indirect_symbol (const struct elf_backend_data *bed,
1297 struct elf_link_hash_entry *dir,
1298 struct elf_link_hash_entry *ind)
1299{
1300 struct elf32_arm_link_hash_entry *edir, *eind;
1301
1302 edir = (struct elf32_arm_link_hash_entry *) dir;
1303 eind = (struct elf32_arm_link_hash_entry *) ind;
1304
1305 if (eind->relocs_copied != NULL)
1306 {
1307 if (edir->relocs_copied != NULL)
1308 {
1309 struct elf32_arm_relocs_copied **pp;
1310 struct elf32_arm_relocs_copied *p;
1311
1312 if (ind->root.type == bfd_link_hash_indirect)
1313 abort ();
1314
1315 /* Add reloc counts against the weak sym to the strong sym
1316 list. Merge any entries against the same section. */
1317 for (pp = &eind->relocs_copied; (p = *pp) != NULL; )
1318 {
1319 struct elf32_arm_relocs_copied *q;
1320
1321 for (q = edir->relocs_copied; q != NULL; q = q->next)
1322 if (q->section == p->section)
1323 {
5e681ec4
PB		 1324 q->count += p->count;
1325 *pp = p->next;
1326 break;
1327 }
1328 if (q == NULL)
1329 pp = &p->next;
1330 }
1331 *pp = edir->relocs_copied;
1332 }
1333
1334 edir->relocs_copied = eind->relocs_copied;
1335 eind->relocs_copied = NULL;
1336 }
1337
b7693d02
DJ		 1338 /* If the direct symbol already has an associated PLT entry, the
1339 indirect symbol should not. If it doesn't, swap refcount information
1340 from the indirect symbol. */
1341 if (edir->plt_thumb_refcount == 0)
1342 {
1343 edir->plt_thumb_refcount = eind->plt_thumb_refcount;
1344 eind->plt_thumb_refcount = 0;
1345 }
1346 else
1347 BFD_ASSERT (eind->plt_thumb_refcount == 0);
1348
5e681ec4
PB		 1349 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
1350}
1351
9b485d32 1352/* Create an ARM elf linker hash table. */
252b5132
RH		 1353
1354static struct bfd_link_hash_table *
57e8b36a 1355elf32_arm_link_hash_table_create (bfd *abfd)
252b5132
RH		 1356{
1357 struct elf32_arm_link_hash_table *ret;
dc810e39 1358 bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
252b5132 1359
57e8b36a
NC		 1360 ret = bfd_malloc (amt);
1361 if (ret == NULL)
252b5132
RH		 1362 return NULL;
1363
57e8b36a 1364 if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
780a67af 1365 elf32_arm_link_hash_newfunc))
252b5132 1366 {
e2d34d7d 1367 free (ret);
252b5132
RH		 1368 return NULL;
1369 }
1370
5e681ec4
PB		 1371 ret->sgot = NULL;
1372 ret->sgotplt = NULL;
1373 ret->srelgot = NULL;
1374 ret->splt = NULL;
1375 ret->srelplt = NULL;
1376 ret->sdynbss = NULL;
1377 ret->srelbss = NULL;
252b5132
RH		 1378 ret->thumb_glue_size = 0;
1379 ret->arm_glue_size = 0;
1380 ret->bfd_of_glue_owner = NULL;
e489d0ae 1381 ret->byteswap_code = 0;
9c504268 1382 ret->target1_is_rel = 0;
eb043451 1383 ret->target2_reloc = R_ARM_NONE;
e5a52504
MM		 1384#ifdef FOUR_WORD_PLT
1385 ret->plt_header_size = 16;
1386 ret->plt_entry_size = 16;
1387#else
1388 ret->plt_header_size = 20;
1389 ret->plt_entry_size = 12;
1390#endif
1391 ret->symbian_p = 0;
5e681ec4 1392 ret->sym_sec.abfd = NULL;
b7693d02 1393 ret->obfd = abfd;
252b5132
RH		 1394
1395 return &ret->root.root;
1396}
1397
9b485d32
NC		 1398/* Locate the Thumb encoded calling stub for NAME. */
1399
252b5132 1400static struct elf_link_hash_entry *
57e8b36a
NC		 1401find_thumb_glue (struct bfd_link_info *link_info,
1402 const char *name,
1403 bfd *input_bfd)
252b5132
RH		 1404{
1405 char *tmp_name;
1406 struct elf_link_hash_entry *hash;
1407 struct elf32_arm_link_hash_table *hash_table;
1408
1409 /* We need a pointer to the armelf specific hash table. */
1410 hash_table = elf32_arm_hash_table (link_info);
1411
57e8b36a
NC		 1412 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
1413 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 1414
1415 BFD_ASSERT (tmp_name);
1416
1417 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
1418
1419 hash = elf_link_hash_lookup
b34976b6 1420 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH		 1421
1422 if (hash == NULL)
1423 /* xgettext:c-format */
d003868e
AM		 1424 (*_bfd_error_handler) (_("%B: unable to find THUMB glue '%s' for `%s'"),
1425 input_bfd, tmp_name, name);
252b5132
RH		 1426
1427 free (tmp_name);
1428
1429 return hash;
1430}
1431
9b485d32
NC		 1432/* Locate the ARM encoded calling stub for NAME. */
1433
252b5132 1434static struct elf_link_hash_entry *
57e8b36a
NC		 1435find_arm_glue (struct bfd_link_info *link_info,
1436 const char *name,
1437 bfd *input_bfd)
252b5132
RH		 1438{
1439 char *tmp_name;
1440 struct elf_link_hash_entry *myh;
1441 struct elf32_arm_link_hash_table *hash_table;
1442
1443 /* We need a pointer to the elfarm specific hash table. */
1444 hash_table = elf32_arm_hash_table (link_info);
1445
57e8b36a
NC		 1446 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
1447 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 1448
1449 BFD_ASSERT (tmp_name);
1450
1451 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
1452
1453 myh = elf_link_hash_lookup
b34976b6 1454 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH		 1455
1456 if (myh == NULL)
1457 /* xgettext:c-format */
d003868e
AM		 1458 (*_bfd_error_handler) (_("%B: unable to find ARM glue '%s' for `%s'"),
1459 input_bfd, tmp_name, name);
252b5132
RH		 1460
1461 free (tmp_name);
1462
1463 return myh;
1464}
1465
9b485d32 1466/* ARM->Thumb glue:
252b5132
RH		 1467
1468 .arm
1469 __func_from_arm:
1470 ldr r12, __func_addr
1471 bx r12
1472 __func_addr:
9b485d32 1473 .word func @ behave as if you saw a ARM_32 reloc. */
252b5132
RH		 1474
1475#define ARM2THUMB_GLUE_SIZE 12
1476static const insn32 a2t1_ldr_insn = 0xe59fc000;
1477static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
1478static const insn32 a2t3_func_addr_insn = 0x00000001;
1479
9b485d32 1480/* Thumb->ARM: Thumb->(non-interworking aware) ARM
252b5132
RH		 1481
1482 .thumb .thumb
1483 .align 2 .align 2
1484 __func_from_thumb: __func_from_thumb:
1485 bx pc push {r6, lr}
1486 nop ldr r6, __func_addr
1487 .arm mov lr, pc
1488 __func_change_to_arm: bx r6
1489 b func .arm
1490 __func_back_to_thumb:
1491 ldmia r13! {r6, lr}
1492 bx lr
1493 __func_addr:
9b485d32 1494 .word func */
252b5132
RH		 1495
1496#define THUMB2ARM_GLUE_SIZE 8
1497static const insn16 t2a1_bx_pc_insn = 0x4778;
1498static const insn16 t2a2_noop_insn = 0x46c0;
1499static const insn32 t2a3_b_insn = 0xea000000;
1500
7e392df6 1501#ifndef ELFARM_NABI_C_INCLUDED
b34976b6 1502bfd_boolean
57e8b36a 1503bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
252b5132
RH		 1504{
1505 asection * s;
1506 bfd_byte * foo;
1507 struct elf32_arm_link_hash_table * globals;
1508
1509 globals = elf32_arm_hash_table (info);
1510
1511 BFD_ASSERT (globals != NULL);
1512
1513 if (globals->arm_glue_size != 0)
1514 {
1515 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
1516
dc810e39
AM		 1517 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
1518 ARM2THUMB_GLUE_SECTION_NAME);
252b5132
RH		 1519
1520 BFD_ASSERT (s != NULL);
1521
57e8b36a 1522 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size);
252b5132 1523
eea6121a 1524 s->size = globals->arm_glue_size;
252b5132
RH		 1525 s->contents = foo;
1526 }
1527
1528 if (globals->thumb_glue_size != 0)
1529 {
1530 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
1531
1532 s = bfd_get_section_by_name
1533 (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
1534
1535 BFD_ASSERT (s != NULL);
1536
57e8b36a 1537 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size);
252b5132 1538
eea6121a 1539 s->size = globals->thumb_glue_size;
252b5132
RH		 1540 s->contents = foo;
1541 }
1542
b34976b6 1543 return TRUE;
252b5132
RH		 1544}
1545
1546static void
57e8b36a
NC		 1547record_arm_to_thumb_glue (struct bfd_link_info * link_info,
1548 struct elf_link_hash_entry * h)
252b5132
RH		 1549{
1550 const char * name = h->root.root.string;
63b0f745 1551 asection * s;
252b5132
RH		 1552 char * tmp_name;
1553 struct elf_link_hash_entry * myh;
14a793b2 1554 struct bfd_link_hash_entry * bh;
252b5132 1555 struct elf32_arm_link_hash_table * globals;
dc810e39 1556 bfd_vma val;
252b5132
RH		 1557
1558 globals = elf32_arm_hash_table (link_info);
1559
1560 BFD_ASSERT (globals != NULL);
1561 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
1562
1563 s = bfd_get_section_by_name
1564 (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
1565
252b5132
RH		 1566 BFD_ASSERT (s != NULL);
1567
57e8b36a 1568 tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 1569
1570 BFD_ASSERT (tmp_name);
1571
1572 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
1573
1574 myh = elf_link_hash_lookup
b34976b6 1575 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH		 1576
1577 if (myh != NULL)
1578 {
9b485d32 1579 /* We've already seen this guy. */
252b5132 1580 free (tmp_name);
9b485d32 1581 return;
252b5132
RH		 1582 }
1583
57e8b36a
NC		 1584 /* The only trick here is using hash_table->arm_glue_size as the value.
1585 Even though the section isn't allocated yet, this is where we will be
1586 putting it. */
14a793b2 1587 bh = NULL;
dc810e39
AM		 1588 val = globals->arm_glue_size + 1;
1589 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
1590 tmp_name, BSF_GLOBAL, s, val,
b34976b6 1591 NULL, TRUE, FALSE, &bh);
252b5132 1592
b7693d02
DJ		 1593 myh = (struct elf_link_hash_entry *) bh;
1594 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
1595 myh->forced_local = 1;
1596
252b5132
RH		 1597 free (tmp_name);
1598
1599 globals->arm_glue_size += ARM2THUMB_GLUE_SIZE;
1600
1601 return;
1602}
1603
1604static void
57e8b36a
NC		 1605record_thumb_to_arm_glue (struct bfd_link_info *link_info,
1606 struct elf_link_hash_entry *h)
252b5132
RH		 1607{
1608 const char *name = h->root.root.string;
63b0f745 1609 asection *s;
252b5132
RH		 1610 char *tmp_name;
1611 struct elf_link_hash_entry *myh;
14a793b2 1612 struct bfd_link_hash_entry *bh;
252b5132 1613 struct elf32_arm_link_hash_table *hash_table;
dc810e39 1614 bfd_vma val;
252b5132
RH		 1615
1616 hash_table = elf32_arm_hash_table (link_info);
1617
1618 BFD_ASSERT (hash_table != NULL);
1619 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
1620
1621 s = bfd_get_section_by_name
1622 (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
1623
1624 BFD_ASSERT (s != NULL);
1625
57e8b36a
NC		 1626 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
1627 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 1628
1629 BFD_ASSERT (tmp_name);
1630
1631 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
1632
1633 myh = elf_link_hash_lookup
b34976b6 1634 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH		 1635
1636 if (myh != NULL)
1637 {
9b485d32 1638 /* We've already seen this guy. */
252b5132 1639 free (tmp_name);
9b485d32 1640 return;
252b5132
RH		 1641 }
1642
14a793b2 1643 bh = NULL;
dc810e39
AM		 1644 val = hash_table->thumb_glue_size + 1;
1645 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
1646 tmp_name, BSF_GLOBAL, s, val,
b34976b6 1647 NULL, TRUE, FALSE, &bh);
252b5132 1648
9b485d32 1649 /* If we mark it 'Thumb', the disassembler will do a better job. */
14a793b2 1650 myh = (struct elf_link_hash_entry *) bh;
b7693d02
DJ		 1651 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
1652 myh->forced_local = 1;
252b5132
RH		 1653
1654 free (tmp_name);
1655
252b5132
RH		 1656#define CHANGE_TO_ARM "__%s_change_to_arm"
1657#define BACK_FROM_ARM "__%s_back_from_arm"
1658
9b485d32 1659 /* Allocate another symbol to mark where we switch to Arm mode. */
57e8b36a
NC		 1660 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
1661 + strlen (CHANGE_TO_ARM) + 1);
252b5132
RH		 1662
1663 BFD_ASSERT (tmp_name);
1664
1665 sprintf (tmp_name, CHANGE_TO_ARM, name);
1666
14a793b2 1667 bh = NULL;
dc810e39
AM		 1668 val = hash_table->thumb_glue_size + 4,
1669 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
1670 tmp_name, BSF_LOCAL, s, val,
b34976b6 1671 NULL, TRUE, FALSE, &bh);
252b5132
RH		 1672
1673 free (tmp_name);
1674
1675 hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
1676
1677 return;
1678}
1679
8afb0e02
NC		 1680/* Add the glue sections to ABFD. This function is called from the
1681 linker scripts in ld/emultempl/{armelf}.em. */
9b485d32 1682
b34976b6 1683bfd_boolean
57e8b36a
NC		 1684bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
1685 struct bfd_link_info *info)
252b5132 1686{
252b5132
RH		 1687 flagword flags;
1688 asection *sec;
1689
8afb0e02
NC		 1690 /* If we are only performing a partial
1691 link do not bother adding the glue. */
1049f94e 1692 if (info->relocatable)
b34976b6 1693 return TRUE;
252b5132 1694
252b5132
RH		 1695 sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME);
1696
1697 if (sec == NULL)
1698 {
57db232e
NC		 1699 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
1700 will prevent elf_link_input_bfd() from processing the contents
1701 of this section. */
811b4bf6 1702 flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY;
252b5132
RH		 1703
1704 sec = bfd_make_section (abfd, ARM2THUMB_GLUE_SECTION_NAME);
1705
1706 if (sec == NULL
1707 || !bfd_set_section_flags (abfd, sec, flags)
1708 || !bfd_set_section_alignment (abfd, sec, 2))
b34976b6 1709 return FALSE;
9a5aca8c 1710
57db232e
NC		 1711 /* Set the gc mark to prevent the section from being removed by garbage
1712 collection, despite the fact that no relocs refer to this section. */
1713 sec->gc_mark = 1;
252b5132
RH		 1714 }
1715
1716 sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME);
1717
1718 if (sec == NULL)
1719 {
57e8b36a
NC		 1720 flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1721 | SEC_CODE | SEC_READONLY;
252b5132
RH		 1722
1723 sec = bfd_make_section (abfd, THUMB2ARM_GLUE_SECTION_NAME);
1724
1725 if (sec == NULL
1726 || !bfd_set_section_flags (abfd, sec, flags)
1727 || !bfd_set_section_alignment (abfd, sec, 2))
b34976b6 1728 return FALSE;
9a5aca8c 1729
57db232e 1730 sec->gc_mark = 1;
252b5132
RH		 1731 }
1732
b34976b6 1733 return TRUE;
8afb0e02
NC		 1734}
1735
1736/* Select a BFD to be used to hold the sections used by the glue code.
1737 This function is called from the linker scripts in ld/emultempl/
1738 {armelf/pe}.em */
1739
b34976b6 1740bfd_boolean
57e8b36a 1741bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
8afb0e02
NC		 1742{
1743 struct elf32_arm_link_hash_table *globals;
1744
1745 /* If we are only performing a partial link
1746 do not bother getting a bfd to hold the glue. */
1049f94e 1747 if (info->relocatable)
b34976b6 1748 return TRUE;
8afb0e02 1749
b7693d02
DJ		 1750 /* Make sure we don't attach the glue sections to a dynamic object. */
1751 BFD_ASSERT (!(abfd->flags & DYNAMIC));
1752
8afb0e02
NC		 1753 globals = elf32_arm_hash_table (info);
1754
1755 BFD_ASSERT (globals != NULL);
1756
1757 if (globals->bfd_of_glue_owner != NULL)
b34976b6 1758 return TRUE;
8afb0e02 1759
252b5132
RH		 1760 /* Save the bfd for later use. */
1761 globals->bfd_of_glue_owner = abfd;
cedb70c5 1762
b34976b6 1763 return TRUE;
252b5132
RH		 1764}
1765
b34976b6 1766bfd_boolean
57e8b36a
NC		 1767bfd_elf32_arm_process_before_allocation (bfd *abfd,
1768 struct bfd_link_info *link_info,
eb043451 1769 int byteswap_code)
252b5132
RH		 1770{
1771 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 1772 Elf_Internal_Rela *internal_relocs = NULL;
252b5132
RH		 1773 Elf_Internal_Rela *irel, *irelend;
1774 bfd_byte *contents = NULL;
252b5132
RH		 1775
1776 asection *sec;
1777 struct elf32_arm_link_hash_table *globals;
1778
1779 /* If we are only performing a partial link do not bother
1780 to construct any glue. */
1049f94e 1781 if (link_info->relocatable)
b34976b6 1782 return TRUE;
252b5132
RH		 1783
1784 /* Here we have a bfd that is to be included on the link. We have a hook
1785 to do reloc rummaging, before section sizes are nailed down. */
252b5132
RH		 1786 globals = elf32_arm_hash_table (link_info);
1787
1788 BFD_ASSERT (globals != NULL);
1789 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
1790
e489d0ae
PB		 1791 if (byteswap_code && !bfd_big_endian (abfd))
1792 {
d003868e
AM		 1793 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
1794 abfd);
e489d0ae
PB		 1795 return FALSE;
1796 }
1797 globals->byteswap_code = byteswap_code;
f21f3fe0 1798
252b5132
RH		 1799 /* Rummage around all the relocs and map the glue vectors. */
1800 sec = abfd->sections;
1801
1802 if (sec == NULL)
b34976b6 1803 return TRUE;
252b5132
RH		 1804
1805 for (; sec != NULL; sec = sec->next)
1806 {
1807 if (sec->reloc_count == 0)
1808 continue;
1809
1810 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
252b5132 1811
9b485d32 1812 /* Load the relocs. */
6cdc0ccc 1813 internal_relocs
57e8b36a 1814 = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL,
45d6a902 1815 (Elf_Internal_Rela *) NULL, FALSE);
252b5132 1816
6cdc0ccc
AM		 1817 if (internal_relocs == NULL)
1818 goto error_return;
252b5132 1819
6cdc0ccc
AM		 1820 irelend = internal_relocs + sec->reloc_count;
1821 for (irel = internal_relocs; irel < irelend; irel++)
252b5132
RH		 1822 {
1823 long r_type;
1824 unsigned long r_index;
252b5132
RH		 1825
1826 struct elf_link_hash_entry *h;
1827
1828 r_type = ELF32_R_TYPE (irel->r_info);
1829 r_index = ELF32_R_SYM (irel->r_info);
1830
9b485d32 1831 /* These are the only relocation types we care about. */
ba96a88f 1832 if ( r_type != R_ARM_PC24
b7693d02 1833 && r_type != R_ARM_PLT32
5b5bb741
PB		 1834#ifndef OLD_ARM_ABI
1835 && r_type != R_ARM_CALL
1836 && r_type != R_ARM_JUMP24
1837#endif
252b5132
RH		 1838 && r_type != R_ARM_THM_PC22)
1839 continue;
1840
1841 /* Get the section contents if we haven't done so already. */
1842 if (contents == NULL)
1843 {
1844 /* Get cached copy if it exists. */
1845 if (elf_section_data (sec)->this_hdr.contents != NULL)
1846 contents = elf_section_data (sec)->this_hdr.contents;
1847 else
1848 {
1849 /* Go get them off disk. */
57e8b36a 1850 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
252b5132
RH		 1851 goto error_return;
1852 }
1853 }
1854
a7c10850 1855 /* If the relocation is not against a symbol it cannot concern us. */
252b5132
RH		 1856 h = NULL;
1857
9b485d32 1858 /* We don't care about local symbols. */
252b5132
RH		 1859 if (r_index < symtab_hdr->sh_info)
1860 continue;
1861
9b485d32 1862 /* This is an external symbol. */
252b5132
RH		 1863 r_index -= symtab_hdr->sh_info;
1864 h = (struct elf_link_hash_entry *)
1865 elf_sym_hashes (abfd)[r_index];
1866
1867 /* If the relocation is against a static symbol it must be within
1868 the current section and so cannot be a cross ARM/Thumb relocation. */
1869 if (h == NULL)
1870 continue;
1871
b7693d02
DJ		 1872 /* If the call will go through a PLT entry then we do not need
1873 glue. */
1874 if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1)
1875 continue;
1876
252b5132
RH		 1877 switch (r_type)
1878 {
1879 case R_ARM_PC24:
5b5bb741
PB		 1880#ifndef OLD_ARM_ABI
1881 case R_ARM_CALL:
1882 case R_ARM_JUMP24:
1883#endif
252b5132 1884 /* This one is a call from arm code. We need to look up
2f0ca46a 1885 the target of the call. If it is a thumb target, we
252b5132 1886 insert glue. */
252b5132
RH		 1887 if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC)
1888 record_arm_to_thumb_glue (link_info, h);
1889 break;
1890
1891 case R_ARM_THM_PC22:
f21f3fe0 1892 /* This one is a call from thumb code. We look
2f0ca46a 1893 up the target of the call. If it is not a thumb
bcbdc74c 1894 target, we insert glue. */
252b5132
RH		 1895 if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC)
1896 record_thumb_to_arm_glue (link_info, h);
1897 break;
1898
1899 default:
1900 break;
1901 }
1902 }
6cdc0ccc
AM		 1903
1904 if (contents != NULL
1905 && elf_section_data (sec)->this_hdr.contents != contents)
1906 free (contents);
1907 contents = NULL;
1908
1909 if (internal_relocs != NULL
1910 && elf_section_data (sec)->relocs != internal_relocs)
1911 free (internal_relocs);
1912 internal_relocs = NULL;
252b5132
RH		 1913 }
1914
b34976b6 1915 return TRUE;
9a5aca8c 1916
252b5132 1917error_return:
6cdc0ccc
AM		 1918 if (contents != NULL
1919 && elf_section_data (sec)->this_hdr.contents != contents)
1920 free (contents);
1921 if (internal_relocs != NULL
1922 && elf_section_data (sec)->relocs != internal_relocs)
1923 free (internal_relocs);
9a5aca8c 1924
b34976b6 1925 return FALSE;
252b5132 1926}
7e392df6 1927#endif
252b5132 1928
eb043451
PB		 1929
1930#ifndef OLD_ARM_ABI
1931/* Set target relocation values needed during linking. */
1932
1933void
1934bfd_elf32_arm_set_target_relocs (struct bfd_link_info *link_info,
1935 int target1_is_rel,
1936 char * target2_type)
1937{
1938 struct elf32_arm_link_hash_table *globals;
1939
1940 globals = elf32_arm_hash_table (link_info);
1941
1942 globals->target1_is_rel = target1_is_rel;
1943 if (strcmp (target2_type, "rel") == 0)
1944 globals->target2_reloc = R_ARM_REL32;
eeac373a
PB		 1945 else if (strcmp (target2_type, "abs") == 0)
1946 globals->target2_reloc = R_ARM_ABS32;
eb043451
PB		 1947 else if (strcmp (target2_type, "got-rel") == 0)
1948 globals->target2_reloc = R_ARM_GOT_PREL;
1949 else
1950 {
1951 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
1952 target2_type);
1953 }
1954}
1955#endif
1956
252b5132
RH		 1957/* The thumb form of a long branch is a bit finicky, because the offset
1958 encoding is split over two fields, each in it's own instruction. They
f21f3fe0 1959 can occur in any order. So given a thumb form of long branch, and an
252b5132 1960 offset, insert the offset into the thumb branch and return finished
f21f3fe0 1961 instruction.
252b5132 1962
f21f3fe0 1963 It takes two thumb instructions to encode the target address. Each has
4cc11e76 1964 11 bits to invest. The upper 11 bits are stored in one (identified by
f21f3fe0
UD		 1965 H-0.. see below), the lower 11 bits are stored in the other (identified
1966 by H-1).
252b5132 1967
f21f3fe0 1968 Combine together and shifted left by 1 (it's a half word address) and
252b5132
RH		 1969 there you have it.
1970
1971 Op: 1111 = F,
1972 H-0, upper address-0 = 000
1973 Op: 1111 = F,
1974 H-1, lower address-0 = 800
1975
f21f3fe0 1976 They can be ordered either way, but the arm tools I've seen always put
252b5132
RH		 1977 the lower one first. It probably doesn't matter. krk@cygnus.com
1978
1979 XXX: Actually the order does matter. The second instruction (H-1)
1980 moves the computed address into the PC, so it must be the second one
1981 in the sequence. The problem, however is that whilst little endian code
1982 stores the instructions in HI then LOW order, big endian code does the
dfc5f959 1983 reverse. nickc@cygnus.com. */
252b5132 1984
dfc5f959
NC		 1985#define LOW_HI_ORDER 0xF800F000
1986#define HI_LOW_ORDER 0xF000F800
252b5132
RH		 1987
1988static insn32
57e8b36a 1989insert_thumb_branch (insn32 br_insn, int rel_off)
252b5132
RH		 1990{
1991 unsigned int low_bits;
1992 unsigned int high_bits;
1993
252b5132
RH		 1994 BFD_ASSERT ((rel_off & 1) != 1);
1995
dfc5f959
NC		 1996 rel_off >>= 1; /* Half word aligned address. */
1997 low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */
1998 high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */
252b5132
RH		 1999
2000 if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER)
2001 br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits;
2002 else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER)
2003 br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits;
2004 else
9b485d32 2005 /* FIXME: abort is probably not the right call. krk@cygnus.com */
57e8b36a 2006 abort (); /* Error - not a valid branch instruction form. */
252b5132 2007
252b5132
RH		 2008 return br_insn;
2009}
2010
9b485d32
NC		 2011/* Thumb code calling an ARM function. */
2012
252b5132 2013static int
57e8b36a
NC		 2014elf32_thumb_to_arm_stub (struct bfd_link_info * info,
2015 const char * name,
2016 bfd * input_bfd,
2017 bfd * output_bfd,
2018 asection * input_section,
2019 bfd_byte * hit_data,
2020 asection * sym_sec,
2021 bfd_vma offset,
2022 bfd_signed_vma addend,
2023 bfd_vma val)
252b5132 2024{
bcbdc74c 2025 asection * s = 0;
dc810e39 2026 bfd_vma my_offset;
252b5132
RH		 2027 unsigned long int tmp;
2028 long int ret_offset;
bcbdc74c
NC		 2029 struct elf_link_hash_entry * myh;
2030 struct elf32_arm_link_hash_table * globals;
252b5132
RH		 2031
2032 myh = find_thumb_glue (info, name, input_bfd);
2033 if (myh == NULL)
b34976b6 2034 return FALSE;
252b5132
RH		 2035
2036 globals = elf32_arm_hash_table (info);
2037
2038 BFD_ASSERT (globals != NULL);
2039 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2040
2041 my_offset = myh->root.u.def.value;
2042
2043 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
2044 THUMB2ARM_GLUE_SECTION_NAME);
2045
2046 BFD_ASSERT (s != NULL);
2047 BFD_ASSERT (s->contents != NULL);
2048 BFD_ASSERT (s->output_section != NULL);
2049
2050 if ((my_offset & 0x01) == 0x01)
2051 {
2052 if (sym_sec != NULL
2053 && sym_sec->owner != NULL
2054 && !INTERWORK_FLAG (sym_sec->owner))
2055 {
8f615d07 2056 (*_bfd_error_handler)
d003868e
AM		 2057 (_("%B(%s): warning: interworking not enabled.\n"
2058 " first occurrence: %B: thumb call to arm"),
2059 sym_sec->owner, input_bfd, name);
252b5132 2060
b34976b6 2061 return FALSE;
252b5132
RH		 2062 }
2063
2064 --my_offset;
2065 myh->root.u.def.value = my_offset;
2066
dc810e39 2067 bfd_put_16 (output_bfd, (bfd_vma) t2a1_bx_pc_insn,
252b5132
RH		 2068 s->contents + my_offset);
2069
dc810e39 2070 bfd_put_16 (output_bfd, (bfd_vma) t2a2_noop_insn,
252b5132
RH		 2071 s->contents + my_offset + 2);
2072
2073 ret_offset =
9b485d32
NC		 2074 /* Address of destination of the stub. */
2075 ((bfd_signed_vma) val)
252b5132 2076 - ((bfd_signed_vma)
57e8b36a
NC		 2077 /* Offset from the start of the current section
2078 to the start of the stubs. */
9b485d32
NC		 2079 (s->output_offset
2080 /* Offset of the start of this stub from the start of the stubs. */
2081 + my_offset
2082 /* Address of the start of the current section. */
2083 + s->output_section->vma)
2084 /* The branch instruction is 4 bytes into the stub. */
2085 + 4
2086 /* ARM branches work from the pc of the instruction + 8. */
2087 + 8);
252b5132
RH		 2088
2089 bfd_put_32 (output_bfd,
dc810e39 2090 (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
252b5132
RH		 2091 s->contents + my_offset + 4);
2092 }
2093
2094 BFD_ASSERT (my_offset <= globals->thumb_glue_size);
2095
427bfd90
NC		 2096 /* Now go back and fix up the original BL insn to point to here. */
2097 ret_offset =
2098 /* Address of where the stub is located. */
2099 (s->output_section->vma + s->output_offset + my_offset)
2100 /* Address of where the BL is located. */
57e8b36a
NC		 2101 - (input_section->output_section->vma + input_section->output_offset
2102 + offset)
427bfd90
NC		 2103 /* Addend in the relocation. */
2104 - addend
2105 /* Biassing for PC-relative addressing. */
2106 - 8;
252b5132
RH		 2107
2108 tmp = bfd_get_32 (input_bfd, hit_data
2109 - input_section->vma);
2110
2111 bfd_put_32 (output_bfd,
dc810e39 2112 (bfd_vma) insert_thumb_branch (tmp, ret_offset),
252b5132
RH		 2113 hit_data - input_section->vma);
2114
b34976b6 2115 return TRUE;
252b5132
RH		 2116}
2117
9b485d32
NC		 2118/* Arm code calling a Thumb function. */
2119
252b5132 2120static int
57e8b36a
NC		 2121elf32_arm_to_thumb_stub (struct bfd_link_info * info,
2122 const char * name,
2123 bfd * input_bfd,
2124 bfd * output_bfd,
2125 asection * input_section,
2126 bfd_byte * hit_data,
2127 asection * sym_sec,
2128 bfd_vma offset,
2129 bfd_signed_vma addend,
2130 bfd_vma val)
252b5132
RH		 2131{
2132 unsigned long int tmp;
dc810e39 2133 bfd_vma my_offset;
bcbdc74c 2134 asection * s;
252b5132 2135 long int ret_offset;
bcbdc74c
NC		 2136 struct elf_link_hash_entry * myh;
2137 struct elf32_arm_link_hash_table * globals;
252b5132
RH		 2138
2139 myh = find_arm_glue (info, name, input_bfd);
2140 if (myh == NULL)
b34976b6 2141 return FALSE;
252b5132
RH		 2142
2143 globals = elf32_arm_hash_table (info);
2144
2145 BFD_ASSERT (globals != NULL);
2146 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2147
2148 my_offset = myh->root.u.def.value;
2149 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
2150 ARM2THUMB_GLUE_SECTION_NAME);
2151 BFD_ASSERT (s != NULL);
2152 BFD_ASSERT (s->contents != NULL);
2153 BFD_ASSERT (s->output_section != NULL);
2154
2155 if ((my_offset & 0x01) == 0x01)
2156 {
2157 if (sym_sec != NULL
2158 && sym_sec->owner != NULL
2159 && !INTERWORK_FLAG (sym_sec->owner))
2160 {
8f615d07 2161 (*_bfd_error_handler)
d003868e
AM		 2162 (_("%B(%s): warning: interworking not enabled.\n"
2163 " first occurrence: %B: arm call to thumb"),
2164 sym_sec->owner, input_bfd, name);
252b5132 2165 }
9b485d32 2166
252b5132
RH		 2167 --my_offset;
2168 myh->root.u.def.value = my_offset;
2169
dc810e39 2170 bfd_put_32 (output_bfd, (bfd_vma) a2t1_ldr_insn,
252b5132
RH		 2171 s->contents + my_offset);
2172
dc810e39 2173 bfd_put_32 (output_bfd, (bfd_vma) a2t2_bx_r12_insn,
252b5132
RH		 2174 s->contents + my_offset + 4);
2175
2176 /* It's a thumb address. Add the low order bit. */
2177 bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
2178 s->contents + my_offset + 8);
2179 }
2180
2181 BFD_ASSERT (my_offset <= globals->arm_glue_size);
2182
2183 tmp = bfd_get_32 (input_bfd, hit_data);
2184 tmp = tmp & 0xFF000000;
2185
9b485d32 2186 /* Somehow these are both 4 too far, so subtract 8. */
dc810e39
AM		 2187 ret_offset = (s->output_offset
2188 + my_offset
2189 + s->output_section->vma
2190 - (input_section->output_offset
2191 + input_section->output_section->vma
2192 + offset + addend)
2193 - 8);
9a5aca8c 2194
252b5132
RH		 2195 tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
2196
dc810e39 2197 bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
252b5132 2198
b34976b6 2199 return TRUE;
252b5132
RH		 2200}
2201
eb043451
PB		 2202
2203#ifndef OLD_ARM_ABI
2204/* Some relocations map to different relocations depending on the
2205 target. Return the real relocation. */
2206static int
2207arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
2208 int r_type)
2209{
2210 switch (r_type)
2211 {
2212 case R_ARM_TARGET1:
2213 if (globals->target1_is_rel)
2214 return R_ARM_REL32;
2215 else
2216 return R_ARM_ABS32;
2217
2218 case R_ARM_TARGET2:
2219 return globals->target2_reloc;
2220
2221 default:
2222 return r_type;
2223 }
2224}
2225#endif /* OLD_ARM_ABI */
2226
2227
252b5132 2228/* Perform a relocation as part of a final link. */
9b485d32 2229
252b5132 2230static bfd_reloc_status_type
57e8b36a
NC		 2231elf32_arm_final_link_relocate (reloc_howto_type * howto,
2232 bfd * input_bfd,
2233 bfd * output_bfd,
2234 asection * input_section,
2235 bfd_byte * contents,
2236 Elf_Internal_Rela * rel,
2237 bfd_vma value,
2238 struct bfd_link_info * info,
2239 asection * sym_sec,
2240 const char * sym_name,
2241 int sym_flags,
2242 struct elf_link_hash_entry * h)
252b5132
RH		 2243{
2244 unsigned long r_type = howto->type;
2245 unsigned long r_symndx;
2246 bfd_byte * hit_data = contents + rel->r_offset;
2247 bfd * dynobj = NULL;
2248 Elf_Internal_Shdr * symtab_hdr;
2249 struct elf_link_hash_entry ** sym_hashes;
2250 bfd_vma * local_got_offsets;
2251 asection * sgot = NULL;
2252 asection * splt = NULL;
2253 asection * sreloc = NULL;
252b5132 2254 bfd_vma addend;
ba96a88f
NC		 2255 bfd_signed_vma signed_addend;
2256 struct elf32_arm_link_hash_table * globals;
f21f3fe0 2257
9c504268
PB		 2258 globals = elf32_arm_hash_table (info);
2259
2260#ifndef OLD_ARM_ABI
2261 /* Some relocation type map to different relocations depending on the
2262 target. We pick the right one here. */
eb043451
PB		 2263 r_type = arm_real_reloc_type (globals, r_type);
2264 if (r_type != howto->type)
2265 howto = elf32_arm_howto_from_type (r_type);
9c504268
PB		 2266#endif /* OLD_ARM_ABI */
2267
cac15327
NC		 2268 /* If the start address has been set, then set the EF_ARM_HASENTRY
2269 flag. Setting this more than once is redundant, but the cost is
2270 not too high, and it keeps the code simple.
99e4ae17 2271
cac15327
NC		 2272 The test is done here, rather than somewhere else, because the
2273 start address is only set just before the final link commences.
2274
2275 Note - if the user deliberately sets a start address of 0, the
2276 flag will not be set. */
2277 if (bfd_get_start_address (output_bfd) != 0)
2278 elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
99e4ae17 2279
252b5132
RH		 2280 dynobj = elf_hash_table (info)->dynobj;
2281 if (dynobj)
2282 {
2283 sgot = bfd_get_section_by_name (dynobj, ".got");
2284 splt = bfd_get_section_by_name (dynobj, ".plt");
2285 }
2286 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
2287 sym_hashes = elf_sym_hashes (input_bfd);
2288 local_got_offsets = elf_local_got_offsets (input_bfd);
2289 r_symndx = ELF32_R_SYM (rel->r_info);
2290
acf8aed4 2291#if USE_REL
ba96a88f
NC		 2292 addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
2293
2294 if (addend & ((howto->src_mask + 1) >> 1))
2295 {
2296 signed_addend = -1;
2297 signed_addend &= ~ howto->src_mask;
2298 signed_addend |= addend;
2299 }
2300 else
2301 signed_addend = addend;
252b5132 2302#else
ba96a88f 2303 addend = signed_addend = rel->r_addend;
252b5132 2304#endif
f21f3fe0 2305
252b5132
RH		 2306 switch (r_type)
2307 {
2308 case R_ARM_NONE:
2309 return bfd_reloc_ok;
2310
2311 case R_ARM_PC24:
2312 case R_ARM_ABS32:
2313 case R_ARM_REL32:
dfc5f959 2314#ifndef OLD_ARM_ABI
5b5bb741
PB		 2315 case R_ARM_CALL:
2316 case R_ARM_JUMP24:
dfc5f959 2317 case R_ARM_XPC25:
eb043451 2318 case R_ARM_PREL31:
dfc5f959 2319#endif
7359ea65 2320 case R_ARM_PLT32:
5e681ec4
PB		 2321 /* r_symndx will be zero only for relocs against symbols
2322 from removed linkonce sections, or sections discarded by
2323 a linker script. */
2324 if (r_symndx == 0)
2325 return bfd_reloc_ok;
2326
7359ea65
DJ		 2327 /* Handle relocations which should use the PLT entry. ABS32/REL32
2328 will use the symbol's value, which may point to a PLT entry, but we
2329 don't need to handle that here. If we created a PLT entry, all
2330 branches in this object should go to it. */
ee06dc07 2331 if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32)
7359ea65 2332 && h != NULL
c84cd8ee 2333 && splt != NULL
7359ea65
DJ		 2334 && h->plt.offset != (bfd_vma) -1)
2335 {
c84cd8ee
DJ		 2336 /* If we've created a .plt section, and assigned a PLT entry to
2337 this function, it should not be known to bind locally. If
2338 it were, we would have cleared the PLT entry. */
7359ea65
DJ		 2339 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
2340
2341 value = (splt->output_section->vma
2342 + splt->output_offset
2343 + h->plt.offset);
2344 return _bfd_final_link_relocate (howto, input_bfd, input_section,
2345 contents, rel->r_offset, value,
2346 (bfd_vma) 0);
2347 }
2348
252b5132 2349 /* When generating a shared object, these relocations are copied
9b485d32 2350 into the output file to be resolved at run time. */
7359ea65
DJ		 2351 if (info->shared
2352 && (input_section->flags & SEC_ALLOC)
ee06dc07
PB		 2353 && (r_type != R_ARM_REL32
2354 || !SYMBOL_CALLS_LOCAL (info, h))
7359ea65
DJ		 2355 && (h == NULL
2356 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2357 || h->root.type != bfd_link_hash_undefweak)
2358 && r_type != R_ARM_PC24
5b5bb741
PB		 2359#ifndef OLD_ARM_ABI
2360 && r_type != R_ARM_CALL
2361 && r_type != R_ARM_JUMP24
ee06dc07 2362 && r_type != R_ARM_PREL31
5b5bb741 2363#endif
7359ea65 2364 && r_type != R_ARM_PLT32)
252b5132 2365 {
947216bf
AM		 2366 Elf_Internal_Rela outrel;
2367 bfd_byte *loc;
b34976b6 2368 bfd_boolean skip, relocate;
f21f3fe0 2369
252b5132
RH		 2370 if (sreloc == NULL)
2371 {
2372 const char * name;
f21f3fe0 2373
252b5132
RH		 2374 name = (bfd_elf_string_from_elf_section
2375 (input_bfd,
2376 elf_elfheader (input_bfd)->e_shstrndx,
2377 elf_section_data (input_section)->rel_hdr.sh_name));
2378 if (name == NULL)
2379 return bfd_reloc_notsupported;
f21f3fe0 2380
252b5132
RH		 2381 BFD_ASSERT (strncmp (name, ".rel", 4) == 0
2382 && strcmp (bfd_get_section_name (input_bfd,
2383 input_section),
2384 name + 4) == 0);
f21f3fe0 2385
252b5132
RH		 2386 sreloc = bfd_get_section_by_name (dynobj, name);
2387 BFD_ASSERT (sreloc != NULL);
2388 }
f21f3fe0 2389
b34976b6
AM		 2390 skip = FALSE;
2391 relocate = FALSE;
f21f3fe0 2392
c629eae0
JJ		 2393 outrel.r_offset =
2394 _bfd_elf_section_offset (output_bfd, info, input_section,
2395 rel->r_offset);
2396 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2397 skip = TRUE;
0bb2d96a 2398 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2399 skip = TRUE, relocate = TRUE;
252b5132
RH		 2400 outrel.r_offset += (input_section->output_section->vma
2401 + input_section->output_offset);
f21f3fe0 2402
252b5132 2403 if (skip)
0bb2d96a 2404 memset (&outrel, 0, sizeof outrel);
5e681ec4
PB		 2405 else if (h != NULL
2406 && h->dynindx != -1
7359ea65 2407 && (!info->shared
5e681ec4 2408 || !info->symbolic
f5385ebf 2409 || !h->def_regular))
5e681ec4 2410 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 2411 else
2412 {
a16385dc
MM		 2413 int symbol;
2414
5e681ec4
PB		 2415 /* This symbol is local, or marked to become local. */
2416 relocate = TRUE;
b7693d02
DJ		 2417 if (sym_flags == STT_ARM_TFUNC)
2418 value |= 1;
a16385dc 2419 if (globals->symbian_p)
6366ff1e
MM		 2420 {
2421 /* On Symbian OS, the data segment and text segement
2422 can be relocated independently. Therefore, we
2423 must indicate the segment to which this
2424 relocation is relative. The BPABI allows us to
2425 use any symbol in the right segment; we just use
2426 the section symbol as it is convenient. (We
2427 cannot use the symbol given by "h" directly as it
2428 will not appear in the dynamic symbol table.) */
2429 symbol = elf_section_data (sym_sec->output_section)->dynindx;
2430 BFD_ASSERT (symbol != 0);
2431 }
a16385dc
MM		 2432 else
2433 /* On SVR4-ish systems, the dynamic loader cannot
2434 relocate the text and data segments independently,
2435 so the symbol does not matter. */
2436 symbol = 0;
2437 outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
252b5132 2438 }
f21f3fe0 2439
947216bf
AM		 2440 loc = sreloc->contents;
2441 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
2442 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
9a5aca8c 2443
f21f3fe0 2444 /* If this reloc is against an external symbol, we do not want to
252b5132 2445 fiddle with the addend. Otherwise, we need to include the symbol
9b485d32 2446 value so that it becomes an addend for the dynamic reloc. */
252b5132
RH		 2447 if (! relocate)
2448 return bfd_reloc_ok;
9a5aca8c 2449
f21f3fe0 2450 return _bfd_final_link_relocate (howto, input_bfd, input_section,
252b5132
RH		 2451 contents, rel->r_offset, value,
2452 (bfd_vma) 0);
2453 }
2454 else switch (r_type)
2455 {
dfc5f959
NC		 2456#ifndef OLD_ARM_ABI
2457 case R_ARM_XPC25: /* Arm BLX instruction. */
5b5bb741
PB		 2458 case R_ARM_CALL:
2459 case R_ARM_JUMP24:
dfc5f959
NC		 2460#endif
2461 case R_ARM_PC24: /* Arm B/BL instruction */
7359ea65 2462 case R_ARM_PLT32:
dfc5f959
NC		 2463#ifndef OLD_ARM_ABI
2464 if (r_type == R_ARM_XPC25)
252b5132 2465 {
dfc5f959
NC		 2466 /* Check for Arm calling Arm function. */
2467 /* FIXME: Should we translate the instruction into a BL
2468 instruction instead ? */
2469 if (sym_flags != STT_ARM_TFUNC)
d003868e
AM		 2470 (*_bfd_error_handler)
2471 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
2472 input_bfd,
2473 h ? h->root.root.string : "(local)");
dfc5f959
NC		 2474 }
2475 else
2476#endif
2477 {
2478 /* Check for Arm calling Thumb function. */
2479 if (sym_flags == STT_ARM_TFUNC)
2480 {
57e8b36a
NC		 2481 elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
2482 output_bfd, input_section,
2483 hit_data, sym_sec, rel->r_offset,
dfc5f959
NC		 2484 signed_addend, value);
2485 return bfd_reloc_ok;
2486 }
252b5132 2487 }
ba96a88f 2488
dea514f5
PB		 2489 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
2490 where:
2491 S is the address of the symbol in the relocation.
2492 P is address of the instruction being relocated.
2493 A is the addend (extracted from the instruction) in bytes.
2494
2495 S is held in 'value'.
2496 P is the base address of the section containing the
2497 instruction plus the offset of the reloc into that
2498 section, ie:
2499 (input_section->output_section->vma +
2500 input_section->output_offset +
2501 rel->r_offset).
2502 A is the addend, converted into bytes, ie:
2503 (signed_addend * 4)
2504
2505 Note: None of these operations have knowledge of the pipeline
2506 size of the processor, thus it is up to the assembler to
2507 encode this information into the addend. */
2508 value -= (input_section->output_section->vma
2509 + input_section->output_offset);
2510 value -= rel->r_offset;
2511 value += (signed_addend << howto->size);
23080146 2512
dcb5e6e6
NC		 2513 signed_addend = value;
2514 signed_addend >>= howto->rightshift;
9a5aca8c 2515
59f2c4e7
NC		 2516 /* It is not an error for an undefined weak reference to be
2517 out of range. Any program that branches to such a symbol
9a5aca8c
AM		 2518 is going to crash anyway, so there is no point worrying
2519 about getting the destination exactly right. */
59f2c4e7
NC		 2520 if (! h || h->root.type != bfd_link_hash_undefweak)
2521 {
9b485d32 2522 /* Perform a signed range check. */
dcb5e6e6 2523 if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
59f2c4e7
NC		 2524 || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
2525 return bfd_reloc_overflow;
2526 }
9a5aca8c 2527
dcb5e6e6
NC		 2528#ifndef OLD_ARM_ABI
2529 /* If necessary set the H bit in the BLX instruction. */
2530 if (r_type == R_ARM_XPC25 && ((value & 2) == 2))
2531 value = (signed_addend & howto->dst_mask)
2532 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask))
2533 | (1 << 24);
2534 else
2535#endif
2536 value = (signed_addend & howto->dst_mask)
2537 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
252b5132 2538 break;
f21f3fe0 2539
252b5132
RH		 2540 case R_ARM_ABS32:
2541 value += addend;
2542 if (sym_flags == STT_ARM_TFUNC)
2543 value |= 1;
2544 break;
f21f3fe0 2545
252b5132
RH		 2546 case R_ARM_REL32:
2547 value -= (input_section->output_section->vma
62efb346 2548 + input_section->output_offset + rel->r_offset);
252b5132
RH		 2549 value += addend;
2550 break;
eb043451
PB		 2551
2552#ifndef OLD_ARM_ABI
2553 case R_ARM_PREL31:
2554 value -= (input_section->output_section->vma
2555 + input_section->output_offset + rel->r_offset);
2556 value += signed_addend;
2557 if (! h || h->root.type != bfd_link_hash_undefweak)
2558 {
2559 /* Check for overflow */
2560 if ((value ^ (value >> 1)) & (1 << 30))
2561 return bfd_reloc_overflow;
2562 }
2563 value &= 0x7fffffff;
2564 value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
2565 if (sym_flags == STT_ARM_TFUNC)
2566 value |= 1;
2567 break;
2568#endif
252b5132 2569 }
f21f3fe0 2570
252b5132
RH		 2571 bfd_put_32 (input_bfd, value, hit_data);
2572 return bfd_reloc_ok;
2573
2574 case R_ARM_ABS8:
2575 value += addend;
2576 if ((long) value > 0x7f || (long) value < -0x80)
2577 return bfd_reloc_overflow;
2578
2579 bfd_put_8 (input_bfd, value, hit_data);
2580 return bfd_reloc_ok;
2581
2582 case R_ARM_ABS16:
2583 value += addend;
2584
2585 if ((long) value > 0x7fff || (long) value < -0x8000)
2586 return bfd_reloc_overflow;
2587
2588 bfd_put_16 (input_bfd, value, hit_data);
2589 return bfd_reloc_ok;
2590
2591 case R_ARM_ABS12:
2592 /* Support ldr and str instruction for the arm */
2593 /* Also thumb b (unconditional branch). ??? Really? */
2594 value += addend;
2595
2596 if ((long) value > 0x7ff || (long) value < -0x800)
2597 return bfd_reloc_overflow;
2598
2599 value |= (bfd_get_32 (input_bfd, hit_data) & 0xfffff000);
2600 bfd_put_32 (input_bfd, value, hit_data);
2601 return bfd_reloc_ok;
2602
2603 case R_ARM_THM_ABS5:
9b485d32 2604 /* Support ldr and str instructions for the thumb. */
acf8aed4 2605#if USE_REL
252b5132
RH		 2606 /* Need to refetch addend. */
2607 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
2608 /* ??? Need to determine shift amount from operand size. */
2609 addend >>= howto->rightshift;
2610#endif
2611 value += addend;
2612
2613 /* ??? Isn't value unsigned? */
2614 if ((long) value > 0x1f || (long) value < -0x10)
2615 return bfd_reloc_overflow;
2616
2617 /* ??? Value needs to be properly shifted into place first. */
2618 value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
2619 bfd_put_16 (input_bfd, value, hit_data);
2620 return bfd_reloc_ok;
2621
dfc5f959
NC		 2622#ifndef OLD_ARM_ABI
2623 case R_ARM_THM_XPC22:
2624#endif
252b5132 2625 case R_ARM_THM_PC22:
dfc5f959 2626 /* Thumb BL (branch long instruction). */
252b5132 2627 {
b34976b6
AM		 2628 bfd_vma relocation;
2629 bfd_boolean overflow = FALSE;
2630 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
2631 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
df212a7e 2632 bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift;
ba96a88f 2633 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
b34976b6 2634 bfd_vma check;
252b5132 2635 bfd_signed_vma signed_check;
252b5132 2636
acf8aed4 2637#if USE_REL
252b5132
RH		 2638 /* Need to refetch the addend and squish the two 11 bit pieces
2639 together. */
2640 {
ba96a88f
NC		 2641 bfd_vma upper = upper_insn & 0x7ff;
2642 bfd_vma lower = lower_insn & 0x7ff;
9b485d32 2643 upper = (upper ^ 0x400) - 0x400; /* Sign extend. */
252b5132 2644 addend = (upper << 12) | (lower << 1);
ba96a88f 2645 signed_addend = addend;
252b5132
RH		 2646 }
2647#endif
dfc5f959
NC		 2648#ifndef OLD_ARM_ABI
2649 if (r_type == R_ARM_THM_XPC22)
2650 {
2651 /* Check for Thumb to Thumb call. */
2652 /* FIXME: Should we translate the instruction into a BL
2653 instruction instead ? */
2654 if (sym_flags == STT_ARM_TFUNC)
d003868e
AM		 2655 (*_bfd_error_handler)
2656 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
2657 input_bfd,
2658 h ? h->root.root.string : "(local)");
dfc5f959
NC		 2659 }
2660 else
2661#endif
252b5132 2662 {
dfc5f959
NC		 2663 /* If it is not a call to Thumb, assume call to Arm.
2664 If it is a call relative to a section name, then it is not a
b7693d02
DJ		 2665 function call at all, but rather a long jump. Calls through
2666 the PLT do not require stubs. */
2667 if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION
2668 && (h == NULL || splt == NULL
2669 || h->plt.offset == (bfd_vma) -1))
dfc5f959
NC		 2670 {
2671 if (elf32_thumb_to_arm_stub
2672 (info, sym_name, input_bfd, output_bfd, input_section,
2673 hit_data, sym_sec, rel->r_offset, signed_addend, value))
2674 return bfd_reloc_ok;
2675 else
2676 return bfd_reloc_dangerous;
2677 }
252b5132 2678 }
f21f3fe0 2679
b7693d02
DJ		 2680 /* Handle calls via the PLT. */
2681 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
2682 {
2683 value = (splt->output_section->vma
2684 + splt->output_offset
2685 + h->plt.offset);
2686 /* Target the Thumb stub before the ARM PLT entry. */
2687 value -= 4;
2688 }
2689
ba96a88f 2690 relocation = value + signed_addend;
f21f3fe0 2691
252b5132 2692 relocation -= (input_section->output_section->vma
ba96a88f
NC		 2693 + input_section->output_offset
2694 + rel->r_offset);
9a5aca8c 2695
252b5132
RH		 2696 check = relocation >> howto->rightshift;
2697
2698 /* If this is a signed value, the rightshift just dropped
2699 leading 1 bits (assuming twos complement). */
2700 if ((bfd_signed_vma) relocation >= 0)
2701 signed_check = check;
2702 else
2703 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
2704
252b5132 2705 /* Assumes two's complement. */
ba96a88f 2706 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
b34976b6 2707 overflow = TRUE;
252b5132 2708
df425bc0 2709#ifndef OLD_ARM_ABI
4f3c3dbb
NC		 2710 if (r_type == R_ARM_THM_XPC22
2711 && ((lower_insn & 0x1800) == 0x0800))
c62e1cc3
NC		 2712 /* For a BLX instruction, make sure that the relocation is rounded up
2713 to a word boundary. This follows the semantics of the instruction
2714 which specifies that bit 1 of the target address will come from bit
2715 1 of the base address. */
2716 relocation = (relocation + 2) & ~ 3;
99e4ae17 2717#endif
c62e1cc3
NC		 2718 /* Put RELOCATION back into the insn. */
2719 upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 12) & 0x7ff);
2720 lower_insn = (lower_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 1) & 0x7ff);
2721
252b5132
RH		 2722 /* Put the relocated value back in the object file: */
2723 bfd_put_16 (input_bfd, upper_insn, hit_data);
2724 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
2725
2726 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
2727 }
2728 break;
2729
51c5503b
NC		 2730 case R_ARM_THM_PC11:
2731 /* Thumb B (branch) instruction). */
2732 {
6cf9e9fe 2733 bfd_signed_vma relocation;
51c5503b
NC		 2734 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
2735 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
51c5503b
NC		 2736 bfd_signed_vma signed_check;
2737
acf8aed4 2738#if USE_REL
51c5503b
NC		 2739 /* Need to refetch addend. */
2740 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
6cf9e9fe
NC		 2741 if (addend & ((howto->src_mask + 1) >> 1))
2742 {
2743 signed_addend = -1;
2744 signed_addend &= ~ howto->src_mask;
2745 signed_addend |= addend;
2746 }
2747 else
2748 signed_addend = addend;
2749 /* The value in the insn has been right shifted. We need to
2750 undo this, so that we can perform the address calculation
2751 in terms of bytes. */
2752 signed_addend <<= howto->rightshift;
51c5503b 2753#endif
6cf9e9fe 2754 relocation = value + signed_addend;
51c5503b
NC		 2755
2756 relocation -= (input_section->output_section->vma
2757 + input_section->output_offset
2758 + rel->r_offset);
2759
6cf9e9fe
NC		 2760 relocation >>= howto->rightshift;
2761 signed_check = relocation;
2762 relocation &= howto->dst_mask;
51c5503b 2763 relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
cedb70c5 2764
51c5503b
NC		 2765 bfd_put_16 (input_bfd, relocation, hit_data);
2766
2767 /* Assumes two's complement. */
2768 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
2769 return bfd_reloc_overflow;
2770
2771 return bfd_reloc_ok;
2772 }
cedb70c5 2773
1f433d93 2774#ifndef OLD_ARM_ABI
8375c36b
PB		 2775 case R_ARM_ALU_PCREL7_0:
2776 case R_ARM_ALU_PCREL15_8:
2777 case R_ARM_ALU_PCREL23_15:
2778 {
2779 bfd_vma insn;
2780 bfd_vma relocation;
2781
2782 insn = bfd_get_32 (input_bfd, hit_data);
2783#if USE_REL
2784 /* Extract the addend. */
2785 addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
2786 signed_addend = addend;
2787#endif
2788 relocation = value + signed_addend;
2789
2790 relocation -= (input_section->output_section->vma
2791 + input_section->output_offset
2792 + rel->r_offset);
2793 insn = (insn & ~0xfff)
2794 | ((howto->bitpos << 7) & 0xf00)
2795 | ((relocation >> howto->bitpos) & 0xff);
2796 bfd_put_32 (input_bfd, value, hit_data);
2797 }
2798 return bfd_reloc_ok;
1f433d93 2799#endif
8375c36b 2800
252b5132
RH		 2801 case R_ARM_GNU_VTINHERIT:
2802 case R_ARM_GNU_VTENTRY:
2803 return bfd_reloc_ok;
2804
2805 case R_ARM_COPY:
2806 return bfd_reloc_notsupported;
2807
2808 case R_ARM_GLOB_DAT:
2809 return bfd_reloc_notsupported;
2810
2811 case R_ARM_JUMP_SLOT:
2812 return bfd_reloc_notsupported;
2813
2814 case R_ARM_RELATIVE:
2815 return bfd_reloc_notsupported;
2816
2817 case R_ARM_GOTOFF:
2818 /* Relocation is relative to the start of the
2819 global offset table. */
2820
2821 BFD_ASSERT (sgot != NULL);
2822 if (sgot == NULL)
2823 return bfd_reloc_notsupported;
9a5aca8c 2824
cedb70c5 2825 /* If we are addressing a Thumb function, we need to adjust the
ee29b9fb
RE		 2826 address by one, so that attempts to call the function pointer will
2827 correctly interpret it as Thumb code. */
2828 if (sym_flags == STT_ARM_TFUNC)
2829 value += 1;
2830
252b5132
RH		 2831 /* Note that sgot->output_offset is not involved in this
2832 calculation. We always want the start of .got. If we
2833 define _GLOBAL_OFFSET_TABLE in a different way, as is
2834 permitted by the ABI, we might have to change this
9b485d32 2835 calculation. */
252b5132 2836 value -= sgot->output_section->vma;
f21f3fe0 2837 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17
AJ		 2838 contents, rel->r_offset, value,
2839 (bfd_vma) 0);
252b5132
RH		 2840
2841 case R_ARM_GOTPC:
a7c10850 2842 /* Use global offset table as symbol value. */
252b5132 2843 BFD_ASSERT (sgot != NULL);
f21f3fe0 2844
252b5132
RH		 2845 if (sgot == NULL)
2846 return bfd_reloc_notsupported;
2847
2848 value = sgot->output_section->vma;
f21f3fe0 2849 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17
AJ		 2850 contents, rel->r_offset, value,
2851 (bfd_vma) 0);
f21f3fe0 2852
252b5132 2853 case R_ARM_GOT32:
eb043451
PB		 2854#ifndef OLD_ARM_ABI
2855 case R_ARM_GOT_PREL:
2856#endif
252b5132 2857 /* Relocation is to the entry for this symbol in the
9b485d32 2858 global offset table. */
252b5132
RH		 2859 if (sgot == NULL)
2860 return bfd_reloc_notsupported;
f21f3fe0 2861
252b5132
RH		 2862 if (h != NULL)
2863 {
2864 bfd_vma off;
5e681ec4 2865 bfd_boolean dyn;
f21f3fe0 2866
252b5132
RH		 2867 off = h->got.offset;
2868 BFD_ASSERT (off != (bfd_vma) -1);
5e681ec4 2869 dyn = globals->root.dynamic_sections_created;
f21f3fe0 2870
5e681ec4 2871 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
50d6c878 2872 || (info->shared
5e681ec4
PB		 2873 && SYMBOL_REFERENCES_LOCAL (info, h))
2874 || (ELF_ST_VISIBILITY (h->other)
2875 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 2876 {
2877 /* This is actually a static link, or it is a -Bsymbolic link
2878 and the symbol is defined locally. We must initialize this
2879 entry in the global offset table. Since the offset must
2880 always be a multiple of 4, we use the least significant bit
2881 to record whether we have initialized it already.
f21f3fe0 2882
252b5132 2883 When doing a dynamic link, we create a .rel.got relocation
f21f3fe0 2884 entry to initialize the value. This is done in the
9b485d32 2885 finish_dynamic_symbol routine. */
252b5132
RH		 2886 if ((off & 1) != 0)
2887 off &= ~1;
2888 else
2889 {
ee29b9fb
RE		 2890 /* If we are addressing a Thumb function, we need to
2891 adjust the address by one, so that attempts to
2892 call the function pointer will correctly
2893 interpret it as Thumb code. */
2894 if (sym_flags == STT_ARM_TFUNC)
2895 value |= 1;
2896
252b5132
RH		 2897 bfd_put_32 (output_bfd, value, sgot->contents + off);
2898 h->got.offset |= 1;
2899 }
2900 }
f21f3fe0 2901
252b5132
RH		 2902 value = sgot->output_offset + off;
2903 }
2904 else
2905 {
2906 bfd_vma off;
f21f3fe0 2907
252b5132
RH		 2908 BFD_ASSERT (local_got_offsets != NULL &&
2909 local_got_offsets[r_symndx] != (bfd_vma) -1);
f21f3fe0 2910
252b5132 2911 off = local_got_offsets[r_symndx];
f21f3fe0 2912
252b5132
RH		 2913 /* The offset must always be a multiple of 4. We use the
2914 least significant bit to record whether we have already
9b485d32 2915 generated the necessary reloc. */
252b5132
RH		 2916 if ((off & 1) != 0)
2917 off &= ~1;
2918 else
2919 {
b7693d02
DJ		 2920 /* If we are addressing a Thumb function, we need to
2921 adjust the address by one, so that attempts to
2922 call the function pointer will correctly
2923 interpret it as Thumb code. */
2924 if (sym_flags == STT_ARM_TFUNC)
2925 value |= 1;
2926
252b5132 2927 bfd_put_32 (output_bfd, value, sgot->contents + off);
f21f3fe0 2928
252b5132
RH		 2929 if (info->shared)
2930 {
2931 asection * srelgot;
947216bf
AM		 2932 Elf_Internal_Rela outrel;
2933 bfd_byte *loc;
f21f3fe0 2934
252b5132
RH		 2935 srelgot = bfd_get_section_by_name (dynobj, ".rel.got");
2936 BFD_ASSERT (srelgot != NULL);
f21f3fe0 2937
252b5132 2938 outrel.r_offset = (sgot->output_section->vma
f21f3fe0 2939 + sgot->output_offset
252b5132
RH		 2940 + off);
2941 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
947216bf
AM		 2942 loc = srelgot->contents;
2943 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
2944 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132 2945 }
f21f3fe0 2946
252b5132
RH		 2947 local_got_offsets[r_symndx] |= 1;
2948 }
f21f3fe0 2949
252b5132
RH		 2950 value = sgot->output_offset + off;
2951 }
eb043451
PB		 2952 if (r_type != R_ARM_GOT32)
2953 value += sgot->output_section->vma;
9a5aca8c 2954
f21f3fe0 2955 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17
AJ		 2956 contents, rel->r_offset, value,
2957 (bfd_vma) 0);
f21f3fe0 2958
252b5132
RH		 2959 case R_ARM_SBREL32:
2960 return bfd_reloc_notsupported;
2961
2962 case R_ARM_AMP_VCALL9:
2963 return bfd_reloc_notsupported;
2964
2965 case R_ARM_RSBREL32:
2966 return bfd_reloc_notsupported;
2967
2968 case R_ARM_THM_RPC22:
2969 return bfd_reloc_notsupported;
2970
2971 case R_ARM_RREL32:
2972 return bfd_reloc_notsupported;
2973
2974 case R_ARM_RABS32:
2975 return bfd_reloc_notsupported;
2976
2977 case R_ARM_RPC24:
2978 return bfd_reloc_notsupported;
2979
2980 case R_ARM_RBASE:
2981 return bfd_reloc_notsupported;
2982
2983 default:
2984 return bfd_reloc_notsupported;
2985 }
2986}
2987
acf8aed4 2988#if USE_REL
98c1d4aa
NC		 2989/* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
2990static void
57e8b36a
NC		 2991arm_add_to_rel (bfd * abfd,
2992 bfd_byte * address,
2993 reloc_howto_type * howto,
2994 bfd_signed_vma increment)
98c1d4aa 2995{
98c1d4aa
NC		 2996 bfd_signed_vma addend;
2997
9a5aca8c 2998 if (howto->type == R_ARM_THM_PC22)
98c1d4aa 2999 {
9a5aca8c
AM		 3000 int upper_insn, lower_insn;
3001 int upper, lower;
98c1d4aa 3002
9a5aca8c
AM		 3003 upper_insn = bfd_get_16 (abfd, address);
3004 lower_insn = bfd_get_16 (abfd, address + 2);
3005 upper = upper_insn & 0x7ff;
3006 lower = lower_insn & 0x7ff;
3007
3008 addend = (upper << 12) | (lower << 1);
ddda4409 3009 addend += increment;
9a5aca8c 3010 addend >>= 1;
98c1d4aa 3011
9a5aca8c
AM		 3012 upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
3013 lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
3014
dc810e39
AM		 3015 bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
3016 bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
9a5aca8c
AM		 3017 }
3018 else
3019 {
3020 bfd_vma contents;
3021
3022 contents = bfd_get_32 (abfd, address);
3023
3024 /* Get the (signed) value from the instruction. */
3025 addend = contents & howto->src_mask;
3026 if (addend & ((howto->src_mask + 1) >> 1))
3027 {
3028 bfd_signed_vma mask;
3029
3030 mask = -1;
3031 mask &= ~ howto->src_mask;
3032 addend |= mask;
3033 }
3034
3035 /* Add in the increment, (which is a byte value). */
3036 switch (howto->type)
3037 {
3038 default:
3039 addend += increment;
3040 break;
3041
3042 case R_ARM_PC24:
5b5bb741
PB		 3043#ifndef OLD_ARM_ABI
3044 case R_ARM_CALL:
3045 case R_ARM_JUMP24:
3046#endif
9a5aca8c 3047 addend <<= howto->size;
dc810e39 3048 addend += increment;
9a5aca8c
AM		 3049
3050 /* Should we check for overflow here ? */
3051
3052 /* Drop any undesired bits. */
3053 addend >>= howto->rightshift;
3054 break;
3055 }
3056
3057 contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
3058
3059 bfd_put_32 (abfd, contents, address);
ddda4409 3060 }
98c1d4aa
NC		 3061}
3062#endif /* USE_REL */
252b5132
RH		 3063
3064/* Relocate an ARM ELF section. */
b34976b6 3065static bfd_boolean
57e8b36a
NC		 3066elf32_arm_relocate_section (bfd * output_bfd,
3067 struct bfd_link_info * info,
3068 bfd * input_bfd,
3069 asection * input_section,
3070 bfd_byte * contents,
3071 Elf_Internal_Rela * relocs,
3072 Elf_Internal_Sym * local_syms,
3073 asection ** local_sections)
252b5132 3074{
b34976b6
AM		 3075 Elf_Internal_Shdr *symtab_hdr;
3076 struct elf_link_hash_entry **sym_hashes;
3077 Elf_Internal_Rela *rel;
3078 Elf_Internal_Rela *relend;
3079 const char *name;
b32d3aa2 3080 struct elf32_arm_link_hash_table * globals;
252b5132 3081
acf8aed4 3082#if !USE_REL
1049f94e 3083 if (info->relocatable)
b34976b6 3084 return TRUE;
b491616a
AM		 3085#endif
3086
b32d3aa2 3087 globals = elf32_arm_hash_table (info);
252b5132
RH		 3088 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
3089 sym_hashes = elf_sym_hashes (input_bfd);
3090
3091 rel = relocs;
3092 relend = relocs + input_section->reloc_count;
3093 for (; rel < relend; rel++)
3094 {
ba96a88f
NC		 3095 int r_type;
3096 reloc_howto_type * howto;
3097 unsigned long r_symndx;
3098 Elf_Internal_Sym * sym;
3099 asection * sec;
252b5132 3100 struct elf_link_hash_entry * h;
ba96a88f
NC		 3101 bfd_vma relocation;
3102 bfd_reloc_status_type r;
3103 arelent bfd_reloc;
f21f3fe0 3104
252b5132 3105 r_symndx = ELF32_R_SYM (rel->r_info);
ba96a88f 3106 r_type = ELF32_R_TYPE (rel->r_info);
b32d3aa2 3107 r_type = arm_real_reloc_type (globals, r_type);
252b5132 3108
ba96a88f
NC		 3109 if ( r_type == R_ARM_GNU_VTENTRY
3110 || r_type == R_ARM_GNU_VTINHERIT)
252b5132
RH		 3111 continue;
3112
b32d3aa2 3113 bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
ba96a88f 3114 howto = bfd_reloc.howto;
252b5132 3115
acf8aed4 3116#if USE_REL
1049f94e 3117 if (info->relocatable)
252b5132 3118 {
1049f94e 3119 /* This is a relocatable link. We don't have to change
252b5132
RH		 3120 anything, unless the reloc is against a section symbol,
3121 in which case we have to adjust according to where the
3122 section symbol winds up in the output section. */
3123 if (r_symndx < symtab_hdr->sh_info)
3124 {
3125 sym = local_syms + r_symndx;
3126 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3127 {
3128 sec = local_sections[r_symndx];
98c1d4aa 3129 arm_add_to_rel (input_bfd, contents + rel->r_offset,
dc810e39
AM		 3130 howto,
3131 (bfd_signed_vma) (sec->output_offset
3132 + sym->st_value));
252b5132
RH		 3133 }
3134 }
3135
3136 continue;
3137 }
b491616a 3138#endif
252b5132
RH		 3139
3140 /* This is a final link. */
3141 h = NULL;
3142 sym = NULL;
3143 sec = NULL;
9b485d32 3144
252b5132
RH		 3145 if (r_symndx < symtab_hdr->sh_info)
3146 {
3147 sym = local_syms + r_symndx;
3148 sec = local_sections[r_symndx];
acf8aed4 3149#if USE_REL
252b5132
RH		 3150 relocation = (sec->output_section->vma
3151 + sec->output_offset
3152 + sym->st_value);
f8df10f4
JJ		 3153 if ((sec->flags & SEC_MERGE)
3154 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
3155 {
3156 asection *msec;
3157 bfd_vma addend, value;
3158
3159 if (howto->rightshift)
3160 {
3161 (*_bfd_error_handler)
d003868e
AM		 3162 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
3163 input_bfd, input_section,
f8df10f4 3164 (long) rel->r_offset, howto->name);
b34976b6 3165 return FALSE;
f8df10f4
JJ		 3166 }
3167
3168 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
3169
3170 /* Get the (signed) value from the instruction. */
3171 addend = value & howto->src_mask;
3172 if (addend & ((howto->src_mask + 1) >> 1))
3173 {
3174 bfd_signed_vma mask;
3175
3176 mask = -1;
3177 mask &= ~ howto->src_mask;
3178 addend |= mask;
3179 }
3180 msec = sec;
3181 addend =
c629eae0 3182 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
f8df10f4
JJ		 3183 - relocation;
3184 addend += msec->output_section->vma + msec->output_offset;
3185 value = (value & ~ howto->dst_mask) | (addend & howto->dst_mask);
3186 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
3187 }
3188#else
8517fae7 3189 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
f8df10f4 3190#endif
252b5132
RH		 3191 }
3192 else
3193 {
560e09e9
NC		 3194 bfd_boolean warned;
3195 bfd_boolean unresolved_reloc;
3196
b2a8e766
AM		 3197 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
3198 r_symndx, symtab_hdr, sym_hashes,
3199 h, sec, relocation,
3200 unresolved_reloc, warned);
57e8b36a 3201
560e09e9 3202 if (unresolved_reloc || relocation != 0)
252b5132 3203 {
252b5132 3204 /* In these cases, we don't need the relocation value.
f21f3fe0 3205 We check specially because in some obscure cases
9b485d32 3206 sec->output_section will be NULL. */
252b5132
RH		 3207 switch (r_type)
3208 {
3209 case R_ARM_PC24:
5b5bb741
PB		 3210#ifndef OLD_ARM_ABI
3211 case R_ARM_CALL:
3212 case R_ARM_JUMP24:
ee06dc07 3213 case R_ARM_PREL31:
5b5bb741 3214#endif
252b5132 3215 case R_ARM_ABS32:
6a360bf4 3216 case R_ARM_THM_PC22:
ecb2d096
DJ		 3217 case R_ARM_PLT32:
3218
252b5132 3219 if (info->shared
f5385ebf
AM		 3220 && ((!info->symbolic && h->dynindx != -1)
3221 || !h->def_regular)
5e681ec4 3222 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
05924f36
PB		 3223 && ((input_section->flags & SEC_ALLOC) != 0
3224 /* DWARF will emit R_ARM_ABS32 relocations in its
3225 sections against symbols defined externally
3226 in shared libraries. We can't do anything
3227 with them here. */
3228 || ((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 3229 && h->def_dynamic))
252b5132 3230 )
560e09e9 3231 relocation = 0;
252b5132 3232 break;
f21f3fe0 3233
252b5132 3234 case R_ARM_GOTPC:
560e09e9 3235 relocation = 0;
252b5132 3236 break;
f21f3fe0 3237
252b5132 3238 case R_ARM_GOT32:
eb043451
PB		 3239#ifndef OLD_ARM_ABI
3240 case R_ARM_GOT_PREL:
3241#endif
50d6c878 3242 if ((WILL_CALL_FINISH_DYNAMIC_SYMBOL
560e09e9 3243 (elf_hash_table (info)->dynamic_sections_created,
50d6c878
DJ		 3244 info->shared, h))
3245 && (!info->shared
252b5132 3246 || (!info->symbolic && h->dynindx != -1)
f5385ebf 3247 || !h->def_regular))
560e09e9 3248 relocation = 0;
252b5132 3249 break;
f21f3fe0 3250
252b5132 3251 default:
560e09e9
NC		 3252 if (unresolved_reloc)
3253 _bfd_error_handler
d003868e
AM		 3254 (_("%B(%A): warning: unresolvable relocation %d against symbol `%s'"),
3255 input_bfd, input_section,
560e09e9 3256 r_type,
d003868e 3257 h->root.root.string);
560e09e9 3258 break;
252b5132 3259 }
252b5132
RH		 3260 }
3261 }
3262
3263 if (h != NULL)
3264 name = h->root.root.string;
3265 else
3266 {
3267 name = (bfd_elf_string_from_elf_section
3268 (input_bfd, symtab_hdr->sh_link, sym->st_name));
3269 if (name == NULL || *name == '\0')
3270 name = bfd_section_name (input_bfd, sec);
3271 }
f21f3fe0 3272
252b5132
RH		 3273 r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
3274 input_section, contents, rel,
3275 relocation, info, sec, name,
3276 (h ? ELF_ST_TYPE (h->type) :
780a67af 3277 ELF_ST_TYPE (sym->st_info)), h);
252b5132
RH		 3278
3279 if (r != bfd_reloc_ok)
3280 {
3281 const char * msg = (const char *) 0;
3282
3283 switch (r)
3284 {
3285 case bfd_reloc_overflow:
cf919dfd
PB		 3286 /* If the overflowing reloc was to an undefined symbol,
3287 we have already printed one error message and there
3288 is no point complaining again. */
3289 if ((! h ||
3290 h->root.type != bfd_link_hash_undefined)
3291 && (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 3292 (info, (h ? &h->root : NULL), name, howto->name,
3293 (bfd_vma) 0, input_bfd, input_section,
3294 rel->r_offset))))
b34976b6 3295 return FALSE;
252b5132
RH		 3296 break;
3297
3298 case bfd_reloc_undefined:
3299 if (!((*info->callbacks->undefined_symbol)
3300 (info, name, input_bfd, input_section,
b34976b6
AM		 3301 rel->r_offset, TRUE)))
3302 return FALSE;
252b5132
RH		 3303 break;
3304
3305 case bfd_reloc_outofrange:
9b485d32 3306 msg = _("internal error: out of range error");
252b5132
RH		 3307 goto common_error;
3308
3309 case bfd_reloc_notsupported:
9b485d32 3310 msg = _("internal error: unsupported relocation error");
252b5132
RH		 3311 goto common_error;
3312
3313 case bfd_reloc_dangerous:
9b485d32 3314 msg = _("internal error: dangerous error");
252b5132
RH		 3315 goto common_error;
3316
3317 default:
9b485d32 3318 msg = _("internal error: unknown error");
252b5132
RH		 3319 /* fall through */
3320
3321 common_error:
3322 if (!((*info->callbacks->warning)
3323 (info, msg, name, input_bfd, input_section,
3324 rel->r_offset)))
b34976b6 3325 return FALSE;
252b5132
RH		 3326 break;
3327 }
3328 }
3329 }
3330
b34976b6 3331 return TRUE;
252b5132
RH		 3332}
3333
c178919b
NC		 3334/* Set the right machine number. */
3335
3336static bfd_boolean
57e8b36a 3337elf32_arm_object_p (bfd *abfd)
c178919b 3338{
5a6c6817 3339 unsigned int mach;
57e8b36a 3340
5a6c6817 3341 mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
c178919b 3342
5a6c6817
NC		 3343 if (mach != bfd_mach_arm_unknown)
3344 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
3345
3346 else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
3347 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
e16bb312 3348
e16bb312 3349 else
5a6c6817 3350 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
c178919b
NC		 3351
3352 return TRUE;
3353}
3354
fc830a83 3355/* Function to keep ARM specific flags in the ELF header. */
3c9458e9 3356
b34976b6 3357static bfd_boolean
57e8b36a 3358elf32_arm_set_private_flags (bfd *abfd, flagword flags)
252b5132
RH		 3359{
3360 if (elf_flags_init (abfd)
3361 && elf_elfheader (abfd)->e_flags != flags)
3362 {
fc830a83
NC		 3363 if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
3364 {
fd2ec330 3365 if (flags & EF_ARM_INTERWORK)
d003868e
AM		 3366 (*_bfd_error_handler)
3367 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
3368 abfd);
fc830a83 3369 else
d003868e
AM		 3370 _bfd_error_handler
3371 (_("Warning: Clearing the interworking flag of %B due to outside request"),
3372 abfd);
fc830a83 3373 }
252b5132
RH		 3374 }
3375 else
3376 {
3377 elf_elfheader (abfd)->e_flags = flags;
b34976b6 3378 elf_flags_init (abfd) = TRUE;
252b5132
RH		 3379 }
3380
b34976b6 3381 return TRUE;
252b5132
RH		 3382}
3383
fc830a83 3384/* Copy backend specific data from one object module to another. */
9b485d32 3385
b34976b6 3386static bfd_boolean
57e8b36a 3387elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
252b5132
RH		 3388{
3389 flagword in_flags;
3390 flagword out_flags;
3391
fc830a83 3392 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
252b5132 3393 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 3394 return TRUE;
252b5132 3395
fc830a83 3396 in_flags = elf_elfheader (ibfd)->e_flags;
252b5132
RH		 3397 out_flags = elf_elfheader (obfd)->e_flags;
3398
fc830a83
NC		 3399 if (elf_flags_init (obfd)
3400 && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
3401 && in_flags != out_flags)
252b5132 3402 {
252b5132 3403 /* Cannot mix APCS26 and APCS32 code. */
fd2ec330 3404 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
b34976b6 3405 return FALSE;
252b5132
RH		 3406
3407 /* Cannot mix float APCS and non-float APCS code. */
fd2ec330 3408 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
b34976b6 3409 return FALSE;
252b5132
RH		 3410
3411 /* If the src and dest have different interworking flags
3412 then turn off the interworking bit. */
fd2ec330 3413 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
252b5132 3414 {
fd2ec330 3415 if (out_flags & EF_ARM_INTERWORK)
d003868e
AM		 3416 _bfd_error_handler
3417 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
3418 obfd, ibfd);
252b5132 3419
fd2ec330 3420 in_flags &= ~EF_ARM_INTERWORK;
252b5132 3421 }
1006ba19
PB		 3422
3423 /* Likewise for PIC, though don't warn for this case. */
fd2ec330
PB		 3424 if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
3425 in_flags &= ~EF_ARM_PIC;
252b5132
RH		 3426 }
3427
3428 elf_elfheader (obfd)->e_flags = in_flags;
b34976b6 3429 elf_flags_init (obfd) = TRUE;
252b5132 3430
94a3258f
PB		 3431 /* Also copy the EI_OSABI field. */
3432 elf_elfheader (obfd)->e_ident[EI_OSABI] =
3433 elf_elfheader (ibfd)->e_ident[EI_OSABI];
3434
b34976b6 3435 return TRUE;
252b5132
RH		 3436}
3437
3438/* Merge backend specific data from an object file to the output
3439 object file when linking. */
9b485d32 3440
b34976b6 3441static bfd_boolean
57e8b36a 3442elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
252b5132
RH		 3443{
3444 flagword out_flags;
3445 flagword in_flags;
b34976b6 3446 bfd_boolean flags_compatible = TRUE;
cf919dfd 3447 asection *sec;
252b5132 3448
9b485d32 3449 /* Check if we have the same endianess. */
82e51918 3450 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
b34976b6 3451 return FALSE;
1fe494a5 3452
252b5132
RH		 3453 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3454 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 3455 return TRUE;
252b5132 3456
252b5132
RH		 3457 /* The input BFD must have had its flags initialised. */
3458 /* The following seems bogus to me -- The flags are initialized in
3459 the assembler but I don't think an elf_flags_init field is
9b485d32 3460 written into the object. */
252b5132
RH		 3461 /* BFD_ASSERT (elf_flags_init (ibfd)); */
3462
3463 in_flags = elf_elfheader (ibfd)->e_flags;
3464 out_flags = elf_elfheader (obfd)->e_flags;
3465
3466 if (!elf_flags_init (obfd))
3467 {
fe077fa6
NC		 3468 /* If the input is the default architecture and had the default
3469 flags then do not bother setting the flags for the output
3470 architecture, instead allow future merges to do this. If no
3471 future merges ever set these flags then they will retain their
3472 uninitialised values, which surprise surprise, correspond
252b5132 3473 to the default values. */
fe077fa6
NC		 3474 if (bfd_get_arch_info (ibfd)->the_default
3475 && elf_elfheader (ibfd)->e_flags == 0)
b34976b6 3476 return TRUE;
252b5132 3477
b34976b6 3478 elf_flags_init (obfd) = TRUE;
252b5132
RH		 3479 elf_elfheader (obfd)->e_flags = in_flags;
3480
3481 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3482 && bfd_get_arch_info (obfd)->the_default)
3483 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
3484
b34976b6 3485 return TRUE;
252b5132
RH		 3486 }
3487
5a6c6817
NC		 3488 /* Determine what should happen if the input ARM architecture
3489 does not match the output ARM architecture. */
3490 if (! bfd_arm_merge_machines (ibfd, obfd))
3491 return FALSE;
e16bb312 3492
1006ba19 3493 /* Identical flags must be compatible. */
252b5132 3494 if (in_flags == out_flags)
b34976b6 3495 return TRUE;
252b5132 3496
35a0f415
DJ		 3497 /* Check to see if the input BFD actually contains any sections. If
3498 not, its flags may not have been initialised either, but it
3499 cannot actually cause any incompatibility. Do not short-circuit
3500 dynamic objects; their section list may be emptied by
d1f161ea 3501 elf_link_add_object_symbols.
35a0f415 3502
d1f161ea
NC		 3503 Also check to see if there are no code sections in the input.
3504 In this case there is no need to check for code specific flags.
3505 XXX - do we need to worry about floating-point format compatability
3506 in data sections ? */
35a0f415 3507 if (!(ibfd->flags & DYNAMIC))
cf919dfd 3508 {
35a0f415 3509 bfd_boolean null_input_bfd = TRUE;
d1f161ea 3510 bfd_boolean only_data_sections = TRUE;
35a0f415
DJ		 3511
3512 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
cf919dfd 3513 {
35a0f415
DJ		 3514 /* Ignore synthetic glue sections. */
3515 if (strcmp (sec->name, ".glue_7")
3516 && strcmp (sec->name, ".glue_7t"))
3517 {
d1f161ea
NC		 3518 if ((bfd_get_section_flags (ibfd, sec)
3519 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
3520 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
3521 only_data_sections = FALSE;
3522
35a0f415
DJ		 3523 null_input_bfd = FALSE;
3524 break;
3525 }
cf919dfd 3526 }
d1f161ea
NC		 3527
3528 if (null_input_bfd || only_data_sections)
35a0f415 3529 return TRUE;
cf919dfd 3530 }
cf919dfd 3531
252b5132 3532 /* Complain about various flag mismatches. */
fc830a83
NC		 3533 if (EF_ARM_EABI_VERSION (in_flags) != EF_ARM_EABI_VERSION (out_flags))
3534 {
d003868e 3535 _bfd_error_handler
3656d5e3 3536 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
d003868e
AM		 3537 ibfd, obfd,
3538 (in_flags & EF_ARM_EABIMASK) >> 24,
3539 (out_flags & EF_ARM_EABIMASK) >> 24);
b34976b6 3540 return FALSE;
fc830a83 3541 }
252b5132 3542
1006ba19
PB		 3543 /* Not sure what needs to be checked for EABI versions >= 1. */
3544 if (EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
3545 {
fd2ec330 3546 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
1006ba19 3547 {
d003868e
AM		 3548 _bfd_error_handler
3549 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
3550 ibfd, obfd,
3551 in_flags & EF_ARM_APCS_26 ? 26 : 32,
3552 out_flags & EF_ARM_APCS_26 ? 26 : 32);
b34976b6 3553 flags_compatible = FALSE;
1006ba19 3554 }
252b5132 3555
fd2ec330 3556 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
1006ba19 3557 {
5eefb65f 3558 if (in_flags & EF_ARM_APCS_FLOAT)
d003868e
AM		 3559 _bfd_error_handler
3560 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
3561 ibfd, obfd);
5eefb65f 3562 else
d003868e
AM		 3563 _bfd_error_handler
3564 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
3565 ibfd, obfd);
63b0f745 3566
b34976b6 3567 flags_compatible = FALSE;
1006ba19 3568 }
252b5132 3569
96a846ea 3570 if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
1006ba19 3571 {
96a846ea 3572 if (in_flags & EF_ARM_VFP_FLOAT)
d003868e
AM		 3573 _bfd_error_handler
3574 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
3575 ibfd, obfd);
5eefb65f 3576 else
d003868e
AM		 3577 _bfd_error_handler
3578 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
3579 ibfd, obfd);
fde78edd
NC		 3580
3581 flags_compatible = FALSE;
3582 }
3583
3584 if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
3585 {
3586 if (in_flags & EF_ARM_MAVERICK_FLOAT)
d003868e
AM		 3587 _bfd_error_handler
3588 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
3589 ibfd, obfd);
fde78edd 3590 else
d003868e
AM		 3591 _bfd_error_handler
3592 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
3593 ibfd, obfd);
63b0f745 3594
b34976b6 3595 flags_compatible = FALSE;
1006ba19 3596 }
96a846ea
RE		 3597
3598#ifdef EF_ARM_SOFT_FLOAT
3599 if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
3600 {
3601 /* We can allow interworking between code that is VFP format
3602 layout, and uses either soft float or integer regs for
3603 passing floating point arguments and results. We already
3604 know that the APCS_FLOAT flags match; similarly for VFP
3605 flags. */
3606 if ((in_flags & EF_ARM_APCS_FLOAT) != 0
3607 || (in_flags & EF_ARM_VFP_FLOAT) == 0)
3608 {
3609 if (in_flags & EF_ARM_SOFT_FLOAT)
d003868e
AM		 3610 _bfd_error_handler
3611 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
3612 ibfd, obfd);
96a846ea 3613 else
d003868e
AM		 3614 _bfd_error_handler
3615 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
3616 ibfd, obfd);
96a846ea 3617
b34976b6 3618 flags_compatible = FALSE;
96a846ea
RE		 3619 }
3620 }
ee43f35e 3621#endif
252b5132 3622
1006ba19 3623 /* Interworking mismatch is only a warning. */
fd2ec330 3624 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
8f615d07 3625 {
e3c8793a
NC		 3626 if (in_flags & EF_ARM_INTERWORK)
3627 {
d003868e
AM		 3628 _bfd_error_handler
3629 (_("Warning: %B supports interworking, whereas %B does not"),
3630 ibfd, obfd);
e3c8793a
NC		 3631 }
3632 else
3633 {
d003868e
AM		 3634 _bfd_error_handler
3635 (_("Warning: %B does not support interworking, whereas %B does"),
3636 ibfd, obfd);
e3c8793a 3637 }
8f615d07 3638 }
252b5132 3639 }
63b0f745 3640
1006ba19 3641 return flags_compatible;
252b5132
RH		 3642}
3643
9b485d32
NC		 3644/* Display the flags field. */
3645
b34976b6 3646static bfd_boolean
57e8b36a 3647elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
252b5132 3648{
fc830a83
NC		 3649 FILE * file = (FILE *) ptr;
3650 unsigned long flags;
252b5132
RH		 3651
3652 BFD_ASSERT (abfd != NULL && ptr != NULL);
3653
3654 /* Print normal ELF private data. */
3655 _bfd_elf_print_private_bfd_data (abfd, ptr);
3656
fc830a83 3657 flags = elf_elfheader (abfd)->e_flags;
9b485d32
NC		 3658 /* Ignore init flag - it may not be set, despite the flags field
3659 containing valid data. */
252b5132
RH		 3660
3661 /* xgettext:c-format */
9b485d32 3662 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
252b5132 3663
fc830a83
NC		 3664 switch (EF_ARM_EABI_VERSION (flags))
3665 {
3666 case EF_ARM_EABI_UNKNOWN:
4cc11e76 3667 /* The following flag bits are GNU extensions and not part of the
fc830a83
NC		 3668 official ARM ELF extended ABI. Hence they are only decoded if
3669 the EABI version is not set. */
fd2ec330 3670 if (flags & EF_ARM_INTERWORK)
9b485d32 3671 fprintf (file, _(" [interworking enabled]"));
9a5aca8c 3672
fd2ec330 3673 if (flags & EF_ARM_APCS_26)
6c571f00 3674 fprintf (file, " [APCS-26]");
fc830a83 3675 else
6c571f00 3676 fprintf (file, " [APCS-32]");
9a5aca8c 3677
96a846ea
RE		 3678 if (flags & EF_ARM_VFP_FLOAT)
3679 fprintf (file, _(" [VFP float format]"));
fde78edd
NC		 3680 else if (flags & EF_ARM_MAVERICK_FLOAT)
3681 fprintf (file, _(" [Maverick float format]"));
96a846ea
RE		 3682 else
3683 fprintf (file, _(" [FPA float format]"));
3684
fd2ec330 3685 if (flags & EF_ARM_APCS_FLOAT)
9b485d32 3686 fprintf (file, _(" [floats passed in float registers]"));
9a5aca8c 3687
fd2ec330 3688 if (flags & EF_ARM_PIC)
9b485d32 3689 fprintf (file, _(" [position independent]"));
fc830a83 3690
fd2ec330 3691 if (flags & EF_ARM_NEW_ABI)
9b485d32 3692 fprintf (file, _(" [new ABI]"));
9a5aca8c 3693
fd2ec330 3694 if (flags & EF_ARM_OLD_ABI)
9b485d32 3695 fprintf (file, _(" [old ABI]"));
9a5aca8c 3696
fd2ec330 3697 if (flags & EF_ARM_SOFT_FLOAT)
9b485d32 3698 fprintf (file, _(" [software FP]"));
9a5aca8c 3699
96a846ea
RE		 3700 flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
3701 | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
fde78edd
NC		 3702 | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
3703 | EF_ARM_MAVERICK_FLOAT);
fc830a83 3704 break;
9a5aca8c 3705
fc830a83 3706 case EF_ARM_EABI_VER1:
9b485d32 3707 fprintf (file, _(" [Version1 EABI]"));
9a5aca8c 3708
fc830a83 3709 if (flags & EF_ARM_SYMSARESORTED)
9b485d32 3710 fprintf (file, _(" [sorted symbol table]"));
fc830a83 3711 else
9b485d32 3712 fprintf (file, _(" [unsorted symbol table]"));
9a5aca8c 3713
fc830a83
NC		 3714 flags &= ~ EF_ARM_SYMSARESORTED;
3715 break;
9a5aca8c 3716
fd2ec330
PB		 3717 case EF_ARM_EABI_VER2:
3718 fprintf (file, _(" [Version2 EABI]"));
3719
3720 if (flags & EF_ARM_SYMSARESORTED)
3721 fprintf (file, _(" [sorted symbol table]"));
3722 else
3723 fprintf (file, _(" [unsorted symbol table]"));
3724
3725 if (flags & EF_ARM_DYNSYMSUSESEGIDX)
3726 fprintf (file, _(" [dynamic symbols use segment index]"));
3727
3728 if (flags & EF_ARM_MAPSYMSFIRST)
3729 fprintf (file, _(" [mapping symbols precede others]"));
3730
99e4ae17 3731 flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
fd2ec330
PB		 3732 | EF_ARM_MAPSYMSFIRST);
3733 break;
3734
d507cf36
PB		 3735 case EF_ARM_EABI_VER3:
3736 fprintf (file, _(" [Version3 EABI]"));
8cb51566
PB		 3737 break;
3738
3739 case EF_ARM_EABI_VER4:
3740 fprintf (file, _(" [Version4 EABI]"));
d507cf36
PB		 3741
3742 if (flags & EF_ARM_BE8)
3743 fprintf (file, _(" [BE8]"));
3744
3745 if (flags & EF_ARM_LE8)
3746 fprintf (file, _(" [LE8]"));
3747
3748 flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
3749 break;
3750
fc830a83 3751 default:
9b485d32 3752 fprintf (file, _(" <EABI version unrecognised>"));
fc830a83
NC		 3753 break;
3754 }
252b5132 3755
fc830a83 3756 flags &= ~ EF_ARM_EABIMASK;
252b5132 3757
fc830a83 3758 if (flags & EF_ARM_RELEXEC)
9b485d32 3759 fprintf (file, _(" [relocatable executable]"));
252b5132 3760
fc830a83 3761 if (flags & EF_ARM_HASENTRY)
9b485d32 3762 fprintf (file, _(" [has entry point]"));
252b5132 3763
fc830a83
NC		 3764 flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
3765
3766 if (flags)
9b485d32 3767 fprintf (file, _("<Unrecognised flag bits set>"));
9a5aca8c 3768
252b5132
RH		 3769 fputc ('\n', file);
3770
b34976b6 3771 return TRUE;
252b5132
RH		 3772}
3773
3774static int
57e8b36a 3775elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
252b5132 3776{
2f0ca46a
NC		 3777 switch (ELF_ST_TYPE (elf_sym->st_info))
3778 {
3779 case STT_ARM_TFUNC:
3780 return ELF_ST_TYPE (elf_sym->st_info);
ce855c42 3781
2f0ca46a
NC		 3782 case STT_ARM_16BIT:
3783 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
3784 This allows us to distinguish between data used by Thumb instructions
3785 and non-data (which is probably code) inside Thumb regions of an
3786 executable. */
3787 if (type != STT_OBJECT)
3788 return ELF_ST_TYPE (elf_sym->st_info);
3789 break;
9a5aca8c 3790
ce855c42
NC		 3791 default:
3792 break;
2f0ca46a
NC		 3793 }
3794
3795 return type;
252b5132 3796}
f21f3fe0 3797
252b5132 3798static asection *
57e8b36a
NC		 3799elf32_arm_gc_mark_hook (asection * sec,
3800 struct bfd_link_info * info ATTRIBUTE_UNUSED,
3801 Elf_Internal_Rela * rel,
3802 struct elf_link_hash_entry * h,
3803 Elf_Internal_Sym * sym)
252b5132
RH		 3804{
3805 if (h != NULL)
3806 {
3807 switch (ELF32_R_TYPE (rel->r_info))
3808 {
3809 case R_ARM_GNU_VTINHERIT:
3810 case R_ARM_GNU_VTENTRY:
3811 break;
3812
3813 default:
3814 switch (h->root.type)
3815 {
3816 case bfd_link_hash_defined:
3817 case bfd_link_hash_defweak:
3818 return h->root.u.def.section;
3819
3820 case bfd_link_hash_common:
3821 return h->root.u.c.p->section;
e049a0de
ILT		 3822
3823 default:
3824 break;
252b5132
RH		 3825 }
3826 }
3827 }
3828 else
1e2f5b6e 3829 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
9ad5cbcf 3830
252b5132
RH		 3831 return NULL;
3832}
3833
780a67af
NC		 3834/* Update the got entry reference counts for the section being removed. */
3835
b34976b6 3836static bfd_boolean
57e8b36a
NC		 3837elf32_arm_gc_sweep_hook (bfd * abfd ATTRIBUTE_UNUSED,
3838 struct bfd_link_info * info ATTRIBUTE_UNUSED,
3839 asection * sec ATTRIBUTE_UNUSED,
3840 const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED)
252b5132 3841{
5e681ec4
PB		 3842 Elf_Internal_Shdr *symtab_hdr;
3843 struct elf_link_hash_entry **sym_hashes;
3844 bfd_signed_vma *local_got_refcounts;
3845 const Elf_Internal_Rela *rel, *relend;
3846 unsigned long r_symndx;
3847 struct elf_link_hash_entry *h;
eb043451
PB		 3848 struct elf32_arm_link_hash_table * globals;
3849
3850 globals = elf32_arm_hash_table (info);
5e681ec4
PB		 3851
3852 elf_section_data (sec)->local_dynrel = NULL;
3853
3854 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3855 sym_hashes = elf_sym_hashes (abfd);
3856 local_got_refcounts = elf_local_got_refcounts (abfd);
3857
3858 relend = relocs + sec->reloc_count;
3859 for (rel = relocs; rel < relend; rel++)
eb043451
PB		 3860 {
3861 int r_type;
5e681ec4 3862
eb043451 3863 r_type = ELF32_R_TYPE (rel->r_info);
b6ee372a 3864#ifndef OLD_ARM_ABI
eb043451 3865 r_type = arm_real_reloc_type (globals, r_type);
b6ee372a 3866#endif
eb043451
PB		 3867 switch (r_type)
3868 {
3869 case R_ARM_GOT32:
3870#ifndef OLD_ARM_ABI
3871 case R_ARM_GOT_PREL:
3872#endif
3873 r_symndx = ELF32_R_SYM (rel->r_info);
3874 if (r_symndx >= symtab_hdr->sh_info)
3875 {
3876 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3877 if (h->got.refcount > 0)
3878 h->got.refcount -= 1;
3879 }
3880 else if (local_got_refcounts != NULL)
3881 {
3882 if (local_got_refcounts[r_symndx] > 0)
3883 local_got_refcounts[r_symndx] -= 1;
3884 }
3885 break;
3886
3887 case R_ARM_ABS32:
3888 case R_ARM_REL32:
3889 case R_ARM_PC24:
3890 case R_ARM_PLT32:
3891#ifndef OLD_ARM_ABI
5b5bb741
PB		 3892 case R_ARM_CALL:
3893 case R_ARM_JUMP24:
eb043451
PB		 3894 case R_ARM_PREL31:
3895#endif
b7693d02
DJ		 3896 case R_ARM_THM_PC22:
3897 /* Should the interworking branches be here also? */
3898
eb043451
PB		 3899 r_symndx = ELF32_R_SYM (rel->r_info);
3900 if (r_symndx >= symtab_hdr->sh_info)
3901 {
3902 struct elf32_arm_link_hash_entry *eh;
3903 struct elf32_arm_relocs_copied **pp;
3904 struct elf32_arm_relocs_copied *p;
5e681ec4 3905
eb043451 3906 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
b7693d02 3907 eh = (struct elf32_arm_link_hash_entry *) h;
5e681ec4 3908
eb043451 3909 if (h->plt.refcount > 0)
b7693d02
DJ		 3910 {
3911 h->plt.refcount -= 1;
3912 if (ELF32_R_TYPE (rel->r_info) == R_ARM_THM_PC22)
3913 eh->plt_thumb_refcount--;
3914 }
5e681ec4 3915
eb043451 3916 if (r_type == R_ARM_ABS32
eb043451
PB		 3917 || r_type == R_ARM_REL32)
3918 {
eb043451
PB		 3919 for (pp = &eh->relocs_copied; (p = *pp) != NULL;
3920 pp = &p->next)
3921 if (p->section == sec)
3922 {
3923 p->count -= 1;
3924 if (p->count == 0)
3925 *pp = p->next;
3926 break;
3927 }
3928 }
3929 }
3930 break;
5e681ec4 3931
eb043451
PB		 3932 default:
3933 break;
3934 }
3935 }
5e681ec4 3936
b34976b6 3937 return TRUE;
252b5132
RH		 3938}
3939
780a67af
NC		 3940/* Look through the relocs for a section during the first phase. */
3941
b34976b6 3942static bfd_boolean
57e8b36a
NC		 3943elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
3944 asection *sec, const Elf_Internal_Rela *relocs)
252b5132 3945{
b34976b6
AM		 3946 Elf_Internal_Shdr *symtab_hdr;
3947 struct elf_link_hash_entry **sym_hashes;
3948 struct elf_link_hash_entry **sym_hashes_end;
3949 const Elf_Internal_Rela *rel;
3950 const Elf_Internal_Rela *rel_end;
3951 bfd *dynobj;
5e681ec4 3952 asection *sreloc;
b34976b6 3953 bfd_vma *local_got_offsets;
5e681ec4 3954 struct elf32_arm_link_hash_table *htab;
9a5aca8c 3955
1049f94e 3956 if (info->relocatable)
b34976b6 3957 return TRUE;
9a5aca8c 3958
5e681ec4
PB		 3959 htab = elf32_arm_hash_table (info);
3960 sreloc = NULL;
9a5aca8c 3961
252b5132
RH		 3962 dynobj = elf_hash_table (info)->dynobj;
3963 local_got_offsets = elf_local_got_offsets (abfd);
f21f3fe0 3964
252b5132
RH		 3965 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3966 sym_hashes = elf_sym_hashes (abfd);
9b485d32
NC		 3967 sym_hashes_end = sym_hashes
3968 + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
3969
252b5132
RH		 3970 if (!elf_bad_symtab (abfd))
3971 sym_hashes_end -= symtab_hdr->sh_info;
9b485d32 3972
252b5132
RH		 3973 rel_end = relocs + sec->reloc_count;
3974 for (rel = relocs; rel < rel_end; rel++)
3975 {
3976 struct elf_link_hash_entry *h;
b7693d02 3977 struct elf32_arm_link_hash_entry *eh;
252b5132 3978 unsigned long r_symndx;
eb043451 3979 int r_type;
9a5aca8c 3980
252b5132 3981 r_symndx = ELF32_R_SYM (rel->r_info);
eb043451
PB		 3982 r_type = ELF32_R_TYPE (rel->r_info);
3983#ifndef OLD_ARM_ABI
3984 r_type = arm_real_reloc_type (htab, r_type);
3985#endif
252b5132
RH		 3986 if (r_symndx < symtab_hdr->sh_info)
3987 h = NULL;
3988 else
3989 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
9a5aca8c 3990
b7693d02
DJ		 3991 eh = (struct elf32_arm_link_hash_entry *) h;
3992
eb043451 3993 switch (r_type)
252b5132 3994 {
5e681ec4 3995 case R_ARM_GOT32:
eb043451
PB		 3996#ifndef OLD_ARM_ABI
3997 case R_ARM_GOT_PREL:
3998#endif
5e681ec4 3999 /* This symbol requires a global offset table entry. */
252b5132
RH		 4000 if (h != NULL)
4001 {
5e681ec4 4002 h->got.refcount++;
252b5132
RH		 4003 }
4004 else
4005 {
5e681ec4
PB		 4006 bfd_signed_vma *local_got_refcounts;
4007
4008 /* This is a global offset table entry for a local symbol. */
4009 local_got_refcounts = elf_local_got_refcounts (abfd);
4010 if (local_got_refcounts == NULL)
252b5132 4011 {
dc810e39 4012 bfd_size_type size;
252b5132 4013
dc810e39 4014 size = symtab_hdr->sh_info;
57e8b36a
NC		 4015 size *= (sizeof (bfd_signed_vma) + sizeof (char));
4016 local_got_refcounts = bfd_zalloc (abfd, size);
5e681ec4 4017 if (local_got_refcounts == NULL)
b34976b6 4018 return FALSE;
5e681ec4 4019 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 4020 }
5e681ec4 4021 local_got_refcounts[r_symndx] += 1;
252b5132 4022 }
eb043451
PB		 4023 if (r_type == R_ARM_GOT32)
4024 break;
4025 /* Fall through. */
252b5132 4026
5e681ec4
PB		 4027 case R_ARM_GOTOFF:
4028 case R_ARM_GOTPC:
4029 if (htab->sgot == NULL)
4030 {
4031 if (htab->root.dynobj == NULL)
4032 htab->root.dynobj = abfd;
4033 if (!create_got_section (htab->root.dynobj, info))
4034 return FALSE;
4035 }
252b5132
RH		 4036 break;
4037
4038 case R_ARM_ABS32:
4039 case R_ARM_REL32:
4040 case R_ARM_PC24:
7359ea65 4041 case R_ARM_PLT32:
eb043451 4042#ifndef OLD_ARM_ABI
5b5bb741
PB		 4043 case R_ARM_CALL:
4044 case R_ARM_JUMP24:
eb043451
PB		 4045 case R_ARM_PREL31:
4046#endif
b7693d02
DJ		 4047 case R_ARM_THM_PC22:
4048 /* Should the interworking branches be listed here? */
7359ea65 4049 if (h != NULL)
5e681ec4
PB		 4050 {
4051 /* If this reloc is in a read-only section, we might
4052 need a copy reloc. We can't check reliably at this
4053 stage whether the section is read-only, as input
4054 sections have not yet been mapped to output sections.
4055 Tentatively set the flag for now, and correct in
4056 adjust_dynamic_symbol. */
7359ea65 4057 if (!info->shared)
f5385ebf 4058 h->non_got_ref = 1;
7359ea65 4059
5e681ec4 4060 /* We may need a .plt entry if the function this reloc
c84cd8ee
DJ		 4061 refers to is in a different object. We can't tell for
4062 sure yet, because something later might force the
4063 symbol local. */
eb043451 4064 if (r_type == R_ARM_PC24
5b5bb741
PB		 4065#ifndef OLD_ARM_ABI
4066 || r_type == R_ARM_CALL
4067 || r_type == R_ARM_JUMP24
ee06dc07 4068 || r_type == R_ARM_PREL31
5b5bb741 4069#endif
b7693d02
DJ		 4070 || r_type == R_ARM_PLT32
4071 || r_type == R_ARM_THM_PC22)
f5385ebf 4072 h->needs_plt = 1;
4f199be3
DJ		 4073
4074 /* If we create a PLT entry, this relocation will reference
4075 it, even if it's an ABS32 relocation. */
4076 h->plt.refcount += 1;
b7693d02
DJ		 4077
4078 if (r_type == R_ARM_THM_PC22)
4079 eh->plt_thumb_refcount += 1;
5e681ec4
PB		 4080 }
4081
252b5132
RH		 4082 /* If we are creating a shared library, and this is a reloc
4083 against a global symbol, or a non PC relative reloc
4084 against a local symbol, then we need to copy the reloc
4085 into the shared library. However, if we are linking with
4086 -Bsymbolic, we do not need to copy a reloc against a
4087 global symbol which is defined in an object we are
4088 including in the link (i.e., DEF_REGULAR is set). At
4089 this point we have not seen all the input files, so it is
4090 possible that DEF_REGULAR is not set now but will be set
4091 later (it is never cleared). We account for that
4092 possibility below by storing information in the
5e681ec4 4093 relocs_copied field of the hash table entry. */
252b5132 4094 if (info->shared
5e681ec4 4095 && (sec->flags & SEC_ALLOC) != 0
eb043451
PB		 4096 && ((r_type != R_ARM_PC24
4097 && r_type != R_ARM_PLT32
b6ee372a 4098#ifndef OLD_ARM_ABI
5b5bb741
PB		 4099 && r_type != R_ARM_CALL
4100 && r_type != R_ARM_JUMP24
eb043451 4101 && r_type != R_ARM_PREL31
b6ee372a 4102#endif
b7693d02
DJ		 4103 && r_type != R_ARM_REL32
4104 && r_type != R_ARM_THM_PC22)
5e681ec4
PB		 4105 || (h != NULL
4106 && (! info->symbolic
f5385ebf 4107 || !h->def_regular))))
252b5132 4108 {
5e681ec4
PB		 4109 struct elf32_arm_relocs_copied *p, **head;
4110
252b5132
RH		 4111 /* When creating a shared object, we must copy these
4112 reloc types into the output file. We create a reloc
4113 section in dynobj and make room for this reloc. */
4114 if (sreloc == NULL)
4115 {
4116 const char * name;
4117
4118 name = (bfd_elf_string_from_elf_section
4119 (abfd,
4120 elf_elfheader (abfd)->e_shstrndx,
4121 elf_section_data (sec)->rel_hdr.sh_name));
4122 if (name == NULL)
b34976b6 4123 return FALSE;
252b5132
RH		 4124
4125 BFD_ASSERT (strncmp (name, ".rel", 4) == 0
99e4ae17 4126 && strcmp (bfd_get_section_name (abfd, sec),
252b5132
RH		 4127 name + 4) == 0);
4128
4129 sreloc = bfd_get_section_by_name (dynobj, name);
4130 if (sreloc == NULL)
4131 {
4132 flagword flags;
4133
4134 sreloc = bfd_make_section (dynobj, name);
4135 flags = (SEC_HAS_CONTENTS | SEC_READONLY
4136 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
e5a52504
MM		 4137 if ((sec->flags & SEC_ALLOC) != 0
4138 /* BPABI objects never have dynamic
4139 relocations mapped. */
4140 && !htab->symbian_p)
252b5132
RH		 4141 flags |= SEC_ALLOC | SEC_LOAD;
4142 if (sreloc == NULL
4143 || ! bfd_set_section_flags (dynobj, sreloc, flags)
4144 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
b34976b6 4145 return FALSE;
252b5132 4146 }
5e681ec4
PB		 4147
4148 elf_section_data (sec)->sreloc = sreloc;
252b5132
RH		 4149 }
4150
5e681ec4
PB		 4151 /* If this is a global symbol, we count the number of
4152 relocations we need for this symbol. */
4153 if (h != NULL)
252b5132 4154 {
5e681ec4
PB		 4155 head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied;
4156 }
4157 else
4158 {
4159 /* Track dynamic relocs needed for local syms too.
4160 We really need local syms available to do this
4161 easily. Oh well. */
57e8b36a 4162
5e681ec4
PB		 4163 asection *s;
4164 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4165 sec, r_symndx);
4166 if (s == NULL)
4167 return FALSE;
57e8b36a 4168
5e681ec4
PB		 4169 head = ((struct elf32_arm_relocs_copied **)
4170 &elf_section_data (s)->local_dynrel);
4171 }
57e8b36a 4172
5e681ec4
PB		 4173 p = *head;
4174 if (p == NULL || p->section != sec)
4175 {
4176 bfd_size_type amt = sizeof *p;
57e8b36a 4177
5e681ec4 4178 p = bfd_alloc (htab->root.dynobj, amt);
252b5132 4179 if (p == NULL)
5e681ec4
PB		 4180 return FALSE;
4181 p->next = *head;
4182 *head = p;
4183 p->section = sec;
4184 p->count = 0;
252b5132 4185 }
57e8b36a 4186
eb043451 4187 if (r_type == R_ARM_ABS32
eb043451 4188 || r_type == R_ARM_REL32)
7359ea65 4189 p->count += 1;
252b5132
RH		 4190 }
4191 break;
4192
4193 /* This relocation describes the C++ object vtable hierarchy.
4194 Reconstruct it for later use during GC. */
4195 case R_ARM_GNU_VTINHERIT:
c152c796 4196 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 4197 return FALSE;
252b5132 4198 break;
9a5aca8c 4199
252b5132
RH		 4200 /* This relocation describes which C++ vtable entries are actually
4201 used. Record for later use during GC. */
4202 case R_ARM_GNU_VTENTRY:
c152c796 4203 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
b34976b6 4204 return FALSE;
252b5132
RH		 4205 break;
4206 }
4207 }
f21f3fe0 4208
b34976b6 4209 return TRUE;
252b5132
RH		 4210}
4211
b34976b6 4212static bfd_boolean
0367ecfb 4213is_arm_mapping_symbol_name (const char * name)
252b5132 4214{
0367ecfb
NC		 4215 return (name != NULL)
4216 && (name[0] == '$')
4217 && ((name[1] == 'a') || (name[1] == 't') || (name[1] == 'd'))
4218 && (name[2] == 0);
4219}
f21f3fe0 4220
3c9458e9
NC		 4221/* Treat mapping symbols as special target symbols. */
4222
4223static bfd_boolean
4224elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
4225{
4226 return is_arm_mapping_symbol_name (sym->name);
4227}
4228
0367ecfb
NC		 4229/* This is a copy of elf_find_function() from elf.c except that
4230 ARM mapping symbols are ignored when looking for function names
4231 and STT_ARM_TFUNC is considered to a function type. */
252b5132 4232
0367ecfb
NC		 4233static bfd_boolean
4234arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
4235 asection * section,
4236 asymbol ** symbols,
4237 bfd_vma offset,
4238 const char ** filename_ptr,
4239 const char ** functionname_ptr)
4240{
4241 const char * filename = NULL;
4242 asymbol * func = NULL;
4243 bfd_vma low_func = 0;
4244 asymbol ** p;
252b5132
RH		 4245
4246 for (p = symbols; *p != NULL; p++)
4247 {
4248 elf_symbol_type *q;
4249
4250 q = (elf_symbol_type *) *p;
4251
252b5132
RH		 4252 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
4253 {
4254 default:
4255 break;
4256 case STT_FILE:
4257 filename = bfd_asymbol_name (&q->symbol);
4258 break;
252b5132
RH		 4259 case STT_FUNC:
4260 case STT_ARM_TFUNC:
0367ecfb
NC		 4261 /* Skip $a and $t symbols. */
4262 if ((q->symbol.flags & BSF_LOCAL)
4263 && is_arm_mapping_symbol_name (q->symbol.name))
4264 continue;
4265 /* Fall through. */
4266 case STT_NOTYPE:
6b40fcba 4267 if (bfd_get_section (&q->symbol) == section
252b5132
RH		 4268 && q->symbol.value >= low_func
4269 && q->symbol.value <= offset)
4270 {
4271 func = (asymbol *) q;
4272 low_func = q->symbol.value;
4273 }
4274 break;
4275 }
4276 }
4277
4278 if (func == NULL)
b34976b6 4279 return FALSE;
252b5132 4280
0367ecfb
NC		 4281 if (filename_ptr)
4282 *filename_ptr = filename;
4283 if (functionname_ptr)
4284 *functionname_ptr = bfd_asymbol_name (func);
4285
4286 return TRUE;
4287}
4288
4289
4290/* Find the nearest line to a particular section and offset, for error
4291 reporting. This code is a duplicate of the code in elf.c, except
4292 that it uses arm_elf_find_function. */
4293
4294static bfd_boolean
4295elf32_arm_find_nearest_line (bfd * abfd,
4296 asection * section,
4297 asymbol ** symbols,
4298 bfd_vma offset,
4299 const char ** filename_ptr,
4300 const char ** functionname_ptr,
4301 unsigned int * line_ptr)
4302{
4303 bfd_boolean found = FALSE;
4304
4305 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
4306
4307 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
4308 filename_ptr, functionname_ptr,
4309 line_ptr, 0,
4310 & elf_tdata (abfd)->dwarf2_find_line_info))
4311 {
4312 if (!*functionname_ptr)
4313 arm_elf_find_function (abfd, section, symbols, offset,
4314 *filename_ptr ? NULL : filename_ptr,
4315 functionname_ptr);
f21f3fe0 4316
0367ecfb
NC		 4317 return TRUE;
4318 }
4319
4320 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
4321 & found, filename_ptr,
4322 functionname_ptr, line_ptr,
4323 & elf_tdata (abfd)->line_info))
4324 return FALSE;
4325
4326 if (found && (*functionname_ptr || *line_ptr))
4327 return TRUE;
4328
4329 if (symbols == NULL)
4330 return FALSE;
4331
4332 if (! arm_elf_find_function (abfd, section, symbols, offset,
4333 filename_ptr, functionname_ptr))
4334 return FALSE;
4335
4336 *line_ptr = 0;
b34976b6 4337 return TRUE;
252b5132
RH		 4338}
4339
4340/* Adjust a symbol defined by a dynamic object and referenced by a
4341 regular object. The current definition is in some section of the
4342 dynamic object, but we're not including those sections. We have to
4343 change the definition to something the rest of the link can
4344 understand. */
4345
b34976b6 4346static bfd_boolean
57e8b36a
NC		 4347elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
4348 struct elf_link_hash_entry * h)
252b5132
RH		 4349{
4350 bfd * dynobj;
4351 asection * s;
4352 unsigned int power_of_two;
b7693d02 4353 struct elf32_arm_link_hash_entry * eh;
252b5132
RH		 4354
4355 dynobj = elf_hash_table (info)->dynobj;
4356
4357 /* Make sure we know what is going on here. */
4358 BFD_ASSERT (dynobj != NULL
f5385ebf 4359 && (h->needs_plt
f6e332e6 4360 || h->u.weakdef != NULL
f5385ebf
AM		 4361 || (h->def_dynamic
4362 && h->ref_regular
4363 && !h->def_regular)));
252b5132 4364
b7693d02
DJ		 4365 eh = (struct elf32_arm_link_hash_entry *) h;
4366
252b5132
RH		 4367 /* If this is a function, put it in the procedure linkage table. We
4368 will fill in the contents of the procedure linkage table later,
4369 when we know the address of the .got section. */
b7693d02 4370 if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
f5385ebf 4371 || h->needs_plt)
252b5132 4372 {
5e681ec4
PB		 4373 if (h->plt.refcount <= 0
4374 || SYMBOL_CALLS_LOCAL (info, h)
4375 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4376 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 4377 {
4378 /* This case can occur if we saw a PLT32 reloc in an input
5e681ec4
PB		 4379 file, but the symbol was never referred to by a dynamic
4380 object, or if all references were garbage collected. In
4381 such a case, we don't actually need to build a procedure
4382 linkage table, and we can just do a PC24 reloc instead. */
4383 h->plt.offset = (bfd_vma) -1;
b7693d02 4384 eh->plt_thumb_refcount = 0;
f5385ebf 4385 h->needs_plt = 0;
252b5132
RH		 4386 }
4387
b34976b6 4388 return TRUE;
252b5132 4389 }
5e681ec4 4390 else
b7693d02
DJ		 4391 {
4392 /* It's possible that we incorrectly decided a .plt reloc was
4393 needed for an R_ARM_PC24 or similar reloc to a non-function sym
4394 in check_relocs. We can't decide accurately between function
4395 and non-function syms in check-relocs; Objects loaded later in
4396 the link may change h->type. So fix it now. */
4397 h->plt.offset = (bfd_vma) -1;
4398 eh->plt_thumb_refcount = 0;
4399 }
252b5132
RH		 4400
4401 /* If this is a weak symbol, and there is a real definition, the
4402 processor independent code will have arranged for us to see the
4403 real definition first, and we can just use the same value. */
f6e332e6 4404 if (h->u.weakdef != NULL)
252b5132 4405 {
f6e332e6
AM		 4406 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
4407 || h->u.weakdef->root.type == bfd_link_hash_defweak);
4408 h->root.u.def.section = h->u.weakdef->root.u.def.section;
4409 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 4410 return TRUE;
252b5132
RH		 4411 }
4412
4413 /* This is a reference to a symbol defined by a dynamic object which
4414 is not a function. */
4415
4416 /* If we are creating a shared library, we must presume that the
4417 only references to the symbol are via the global offset table.
4418 For such cases we need not do anything here; the relocations will
4419 be handled correctly by relocate_section. */
4420 if (info->shared)
b34976b6 4421 return TRUE;
252b5132
RH		 4422
4423 /* We must allocate the symbol in our .dynbss section, which will
4424 become part of the .bss section of the executable. There will be
4425 an entry for this symbol in the .dynsym section. The dynamic
4426 object will contain position independent code, so all references
4427 from the dynamic object to this symbol will go through the global
4428 offset table. The dynamic linker will use the .dynsym entry to
4429 determine the address it must put in the global offset table, so
4430 both the dynamic object and the regular object will refer to the
4431 same memory location for the variable. */
252b5132
RH		 4432 s = bfd_get_section_by_name (dynobj, ".dynbss");
4433 BFD_ASSERT (s != NULL);
4434
4435 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
4436 copy the initial value out of the dynamic object and into the
4437 runtime process image. We need to remember the offset into the
4438 .rel.bss section we are going to use. */
4439 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
4440 {
4441 asection *srel;
4442
4443 srel = bfd_get_section_by_name (dynobj, ".rel.bss");
4444 BFD_ASSERT (srel != NULL);
eea6121a 4445 srel->size += sizeof (Elf32_External_Rel);
f5385ebf 4446 h->needs_copy = 1;
252b5132
RH		 4447 }
4448
4449 /* We need to figure out the alignment required for this symbol. I
4450 have no idea how ELF linkers handle this. */
4451 power_of_two = bfd_log2 (h->size);
4452 if (power_of_two > 3)
4453 power_of_two = 3;
4454
4455 /* Apply the required alignment. */
eea6121a 4456 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
252b5132
RH		 4457 if (power_of_two > bfd_get_section_alignment (dynobj, s))
4458 {
4459 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
b34976b6 4460 return FALSE;
252b5132
RH		 4461 }
4462
4463 /* Define the symbol as being at this point in the section. */
4464 h->root.u.def.section = s;
eea6121a 4465 h->root.u.def.value = s->size;
252b5132
RH		 4466
4467 /* Increment the section size to make room for the symbol. */
eea6121a 4468 s->size += h->size;
252b5132 4469
b34976b6 4470 return TRUE;
252b5132
RH		 4471}
4472
5e681ec4
PB		 4473/* Allocate space in .plt, .got and associated reloc sections for
4474 dynamic relocs. */
4475
4476static bfd_boolean
57e8b36a 4477allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
5e681ec4
PB		 4478{
4479 struct bfd_link_info *info;
4480 struct elf32_arm_link_hash_table *htab;
4481 struct elf32_arm_link_hash_entry *eh;
4482 struct elf32_arm_relocs_copied *p;
4483
b7693d02
DJ		 4484 eh = (struct elf32_arm_link_hash_entry *) h;
4485
5e681ec4
PB		 4486 if (h->root.type == bfd_link_hash_indirect)
4487 return TRUE;
4488
4489 if (h->root.type == bfd_link_hash_warning)
4490 /* When warning symbols are created, they **replace** the "real"
4491 entry in the hash table, thus we never get to see the real
4492 symbol in a hash traversal. So look at it now. */
4493 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4494
4495 info = (struct bfd_link_info *) inf;
4496 htab = elf32_arm_hash_table (info);
4497
4498 if (htab->root.dynamic_sections_created
4499 && h->plt.refcount > 0)
4500 {
4501 /* Make sure this symbol is output as a dynamic symbol.
4502 Undefined weak syms won't yet be marked as dynamic. */
4503 if (h->dynindx == -1
f5385ebf 4504 && !h->forced_local)
5e681ec4 4505 {
c152c796 4506 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB		 4507 return FALSE;
4508 }
4509
4510 if (info->shared
7359ea65 4511 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
5e681ec4
PB		 4512 {
4513 asection *s = htab->splt;
4514
4515 /* If this is the first .plt entry, make room for the special
4516 first entry. */
eea6121a 4517 if (s->size == 0)
e5a52504 4518 s->size += htab->plt_header_size;
5e681ec4 4519
eea6121a 4520 h->plt.offset = s->size;
5e681ec4 4521
b7693d02
DJ		 4522 /* If we will insert a Thumb trampoline before this PLT, leave room
4523 for it. */
4524 if (!htab->symbian_p && eh->plt_thumb_refcount > 0)
4525 {
4526 h->plt.offset += PLT_THUMB_STUB_SIZE;
4527 s->size += PLT_THUMB_STUB_SIZE;
4528 }
4529
5e681ec4
PB		 4530 /* If this symbol is not defined in a regular file, and we are
4531 not generating a shared library, then set the symbol to this
4532 location in the .plt. This is required to make function
4533 pointers compare as equal between the normal executable and
4534 the shared library. */
4535 if (! info->shared
f5385ebf 4536 && !h->def_regular)
5e681ec4
PB		 4537 {
4538 h->root.u.def.section = s;
4539 h->root.u.def.value = h->plt.offset;
b7693d02
DJ		 4540
4541 /* Make sure the function is not marked as Thumb, in case
4542 it is the target of an ABS32 relocation, which will
4543 point to the PLT entry. */
4544 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
4545 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
5e681ec4
PB		 4546 }
4547
4548 /* Make room for this entry. */
e5a52504 4549 s->size += htab->plt_entry_size;
5e681ec4 4550
e5a52504 4551 if (!htab->symbian_p)
b7693d02
DJ		 4552 {
4553 /* We also need to make an entry in the .got.plt section, which
4554 will be placed in the .got section by the linker script. */
4555 eh->plt_got_offset = htab->sgotplt->size;
4556 htab->sgotplt->size += 4;
4557 }
5e681ec4
PB		 4558
4559 /* We also need to make an entry in the .rel.plt section. */
eea6121a 4560 htab->srelplt->size += sizeof (Elf32_External_Rel);
5e681ec4
PB		 4561 }
4562 else
4563 {
4564 h->plt.offset = (bfd_vma) -1;
f5385ebf 4565 h->needs_plt = 0;
5e681ec4
PB		 4566 }
4567 }
4568 else
4569 {
4570 h->plt.offset = (bfd_vma) -1;
f5385ebf 4571 h->needs_plt = 0;
5e681ec4
PB		 4572 }
4573
4574 if (h->got.refcount > 0)
4575 {
4576 asection *s;
4577 bfd_boolean dyn;
4578
4579 /* Make sure this symbol is output as a dynamic symbol.
4580 Undefined weak syms won't yet be marked as dynamic. */
4581 if (h->dynindx == -1
f5385ebf 4582 && !h->forced_local)
5e681ec4 4583 {
c152c796 4584 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB		 4585 return FALSE;
4586 }
4587
e5a52504
MM		 4588 if (!htab->symbian_p)
4589 {
4590 s = htab->sgot;
4591 h->got.offset = s->size;
4592 s->size += 4;
4593 dyn = htab->root.dynamic_sections_created;
4594 if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4595 || h->root.type != bfd_link_hash_undefweak)
4596 && (info->shared
4597 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
4598 htab->srelgot->size += sizeof (Elf32_External_Rel);
4599 }
5e681ec4
PB		 4600 }
4601 else
4602 h->got.offset = (bfd_vma) -1;
4603
5e681ec4
PB		 4604 if (eh->relocs_copied == NULL)
4605 return TRUE;
4606
4607 /* In the shared -Bsymbolic case, discard space allocated for
4608 dynamic pc-relative relocs against symbols which turn out to be
4609 defined in regular objects. For the normal shared case, discard
4610 space for pc-relative relocs that have become local due to symbol
4611 visibility changes. */
4612
4613 if (info->shared)
4614 {
7359ea65
DJ		 4615 /* Discard relocs on undefined weak syms with non-default
4616 visibility. */
5e681ec4
PB		 4617 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4618 && h->root.type == bfd_link_hash_undefweak)
4619 eh->relocs_copied = NULL;
4620 }
4621 else
4622 {
4623 /* For the non-shared case, discard space for relocs against
4624 symbols which turn out to need copy relocs or are not
4625 dynamic. */
4626
f5385ebf
AM		 4627 if (!h->non_got_ref
4628 && ((h->def_dynamic
4629 && !h->def_regular)
5e681ec4
PB		 4630 || (htab->root.dynamic_sections_created
4631 && (h->root.type == bfd_link_hash_undefweak
4632 || h->root.type == bfd_link_hash_undefined))))
4633 {
4634 /* Make sure this symbol is output as a dynamic symbol.
4635 Undefined weak syms won't yet be marked as dynamic. */
4636 if (h->dynindx == -1
f5385ebf 4637 && !h->forced_local)
5e681ec4 4638 {
c152c796 4639 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB		 4640 return FALSE;
4641 }
4642
4643 /* If that succeeded, we know we'll be keeping all the
4644 relocs. */
4645 if (h->dynindx != -1)
4646 goto keep;
4647 }
4648
4649 eh->relocs_copied = NULL;
4650
4651 keep: ;
4652 }
4653
4654 /* Finally, allocate space. */
4655 for (p = eh->relocs_copied; p != NULL; p = p->next)
4656 {
4657 asection *sreloc = elf_section_data (p->section)->sreloc;
eea6121a 4658 sreloc->size += p->count * sizeof (Elf32_External_Rel);
5e681ec4
PB		 4659 }
4660
4661 return TRUE;
4662}
4663
08d1f311
DJ		 4664/* Find any dynamic relocs that apply to read-only sections. */
4665
4666static bfd_boolean
4667elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
4668{
4669 struct elf32_arm_link_hash_entry *eh;
4670 struct elf32_arm_relocs_copied *p;
4671
4672 if (h->root.type == bfd_link_hash_warning)
4673 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4674
4675 eh = (struct elf32_arm_link_hash_entry *) h;
4676 for (p = eh->relocs_copied; p != NULL; p = p->next)
4677 {
4678 asection *s = p->section;
4679
4680 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4681 {
4682 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4683
4684 info->flags |= DF_TEXTREL;
4685
4686 /* Not an error, just cut short the traversal. */
4687 return FALSE;
4688 }
4689 }
4690 return TRUE;
4691}
4692
252b5132
RH		 4693/* Set the sizes of the dynamic sections. */
4694
b34976b6 4695static bfd_boolean
57e8b36a
NC		 4696elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
4697 struct bfd_link_info * info)
252b5132
RH		 4698{
4699 bfd * dynobj;
4700 asection * s;
b34976b6
AM		 4701 bfd_boolean plt;
4702 bfd_boolean relocs;
5e681ec4
PB		 4703 bfd *ibfd;
4704 struct elf32_arm_link_hash_table *htab;
252b5132 4705
5e681ec4 4706 htab = elf32_arm_hash_table (info);
252b5132
RH		 4707 dynobj = elf_hash_table (info)->dynobj;
4708 BFD_ASSERT (dynobj != NULL);
4709
4710 if (elf_hash_table (info)->dynamic_sections_created)
4711 {
4712 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 4713 if (info->executable)
252b5132
RH		 4714 {
4715 s = bfd_get_section_by_name (dynobj, ".interp");
4716 BFD_ASSERT (s != NULL);
eea6121a 4717 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 4718 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4719 }
4720 }
5e681ec4
PB		 4721
4722 /* Set up .got offsets for local syms, and space for local dynamic
4723 relocs. */
4724 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
252b5132 4725 {
5e681ec4
PB		 4726 bfd_signed_vma *local_got;
4727 bfd_signed_vma *end_local_got;
4728 char *local_tls_type;
4729 bfd_size_type locsymcount;
4730 Elf_Internal_Shdr *symtab_hdr;
4731 asection *srel;
4732
4733 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
4734 continue;
4735
4736 for (s = ibfd->sections; s != NULL; s = s->next)
4737 {
4738 struct elf32_arm_relocs_copied *p;
4739
4740 for (p = *((struct elf32_arm_relocs_copied **)
4741 &elf_section_data (s)->local_dynrel);
4742 p != NULL;
4743 p = p->next)
4744 {
4745 if (!bfd_is_abs_section (p->section)
4746 && bfd_is_abs_section (p->section->output_section))
4747 {
4748 /* Input section has been discarded, either because
4749 it is a copy of a linkonce section or due to
4750 linker script /DISCARD/, so we'll be discarding
4751 the relocs too. */
4752 }
4753 else if (p->count != 0)
4754 {
4755 srel = elf_section_data (p->section)->sreloc;
eea6121a 4756 srel->size += p->count * sizeof (Elf32_External_Rel);
5e681ec4
PB		 4757 if ((p->section->output_section->flags & SEC_READONLY) != 0)
4758 info->flags |= DF_TEXTREL;
4759 }
4760 }
4761 }
4762
4763 local_got = elf_local_got_refcounts (ibfd);
4764 if (!local_got)
4765 continue;
4766
4767 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4768 locsymcount = symtab_hdr->sh_info;
4769 end_local_got = local_got + locsymcount;
4770 s = htab->sgot;
4771 srel = htab->srelgot;
4772 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
4773 {
4774 if (*local_got > 0)
4775 {
eea6121a
AM		 4776 *local_got = s->size;
4777 s->size += 4;
5e681ec4 4778 if (info->shared)
eea6121a 4779 srel->size += sizeof (Elf32_External_Rel);
5e681ec4
PB		 4780 }
4781 else
4782 *local_got = (bfd_vma) -1;
4783 }
252b5132
RH		 4784 }
4785
5e681ec4
PB		 4786 /* Allocate global sym .plt and .got entries, and space for global
4787 sym dynamic relocs. */
57e8b36a 4788 elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info);
252b5132
RH		 4789
4790 /* The check_relocs and adjust_dynamic_symbol entry points have
4791 determined the sizes of the various dynamic sections. Allocate
4792 memory for them. */
b34976b6
AM		 4793 plt = FALSE;
4794 relocs = FALSE;
252b5132
RH		 4795 for (s = dynobj->sections; s != NULL; s = s->next)
4796 {
4797 const char * name;
b34976b6 4798 bfd_boolean strip;
252b5132
RH		 4799
4800 if ((s->flags & SEC_LINKER_CREATED) == 0)
4801 continue;
4802
4803 /* It's OK to base decisions on the section name, because none
4804 of the dynobj section names depend upon the input files. */
4805 name = bfd_get_section_name (dynobj, s);
4806
b34976b6 4807 strip = FALSE;
252b5132 4808
24a1ba0f 4809 if (strcmp (name, ".plt") == 0)
252b5132 4810 {
eea6121a 4811 if (s->size == 0)
252b5132
RH		 4812 {
4813 /* Strip this section if we don't need it; see the
4814 comment below. */
b34976b6 4815 strip = TRUE;
252b5132
RH		 4816 }
4817 else
4818 {
4819 /* Remember whether there is a PLT. */
b34976b6 4820 plt = TRUE;
252b5132
RH		 4821 }
4822 }
4823 else if (strncmp (name, ".rel", 4) == 0)
4824 {
eea6121a 4825 if (s->size == 0)
252b5132
RH		 4826 {
4827 /* If we don't need this section, strip it from the
4828 output file. This is mostly to handle .rel.bss and
4829 .rel.plt. We must create both sections in
4830 create_dynamic_sections, because they must be created
4831 before the linker maps input sections to output
4832 sections. The linker does that before
4833 adjust_dynamic_symbol is called, and it is that
4834 function which decides whether anything needs to go
4835 into these sections. */
b34976b6 4836 strip = TRUE;
252b5132
RH		 4837 }
4838 else
4839 {
252b5132
RH		 4840 /* Remember whether there are any reloc sections other
4841 than .rel.plt. */
4842 if (strcmp (name, ".rel.plt") != 0)
b34976b6 4843 relocs = TRUE;
252b5132
RH		 4844
4845 /* We use the reloc_count field as a counter if we need
4846 to copy relocs into the output file. */
4847 s->reloc_count = 0;
4848 }
4849 }
4850 else if (strncmp (name, ".got", 4) != 0)
4851 {
4852 /* It's not one of our sections, so don't allocate space. */
4853 continue;
4854 }
4855
4856 if (strip)
4857 {
52585bb8 4858 _bfd_strip_section_from_output (info, s);
252b5132
RH		 4859 continue;
4860 }
4861
4862 /* Allocate memory for the section contents. */
eea6121a
AM		 4863 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
4864 if (s->contents == NULL && s->size != 0)
b34976b6 4865 return FALSE;
252b5132
RH		 4866 }
4867
4868 if (elf_hash_table (info)->dynamic_sections_created)
4869 {
4870 /* Add some entries to the .dynamic section. We fill in the
4871 values later, in elf32_arm_finish_dynamic_sections, but we
4872 must add the entries now so that we get the correct size for
4873 the .dynamic section. The DT_DEBUG entry is filled in by the
4874 dynamic linker and used by the debugger. */
dc810e39 4875#define add_dynamic_entry(TAG, VAL) \
5a580b3a 4876 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39
AM		 4877
4878 if (!info->shared)
252b5132 4879 {
dc810e39 4880 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 4881 return FALSE;
252b5132
RH		 4882 }
4883
4884 if (plt)
4885 {
dc810e39
AM		 4886 if ( !add_dynamic_entry (DT_PLTGOT, 0)
4887 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4888 || !add_dynamic_entry (DT_PLTREL, DT_REL)
4889 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 4890 return FALSE;
252b5132
RH		 4891 }
4892
4893 if (relocs)
4894 {
dc810e39
AM		 4895 if ( !add_dynamic_entry (DT_REL, 0)
4896 || !add_dynamic_entry (DT_RELSZ, 0)
4897 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 4898 return FALSE;
252b5132
RH		 4899 }
4900
08d1f311
DJ		 4901 /* If any dynamic relocs apply to a read-only section,
4902 then we need a DT_TEXTREL entry. */
4903 if ((info->flags & DF_TEXTREL) == 0)
4904 elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs,
4905 (PTR) info);
4906
99e4ae17 4907 if ((info->flags & DF_TEXTREL) != 0)
252b5132 4908 {
dc810e39 4909 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 4910 return FALSE;
d6cf2879 4911 info->flags |= DF_TEXTREL;
252b5132
RH		 4912 }
4913 }
dc810e39 4914#undef add_synamic_entry
252b5132 4915
b34976b6 4916 return TRUE;
252b5132
RH		 4917}
4918
252b5132
RH		 4919/* Finish up dynamic symbol handling. We set the contents of various
4920 dynamic sections here. */
4921
b34976b6 4922static bfd_boolean
57e8b36a
NC		 4923elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info,
4924 struct elf_link_hash_entry * h, Elf_Internal_Sym * sym)
252b5132
RH		 4925{
4926 bfd * dynobj;
e5a52504 4927 struct elf32_arm_link_hash_table *htab;
b7693d02 4928 struct elf32_arm_link_hash_entry *eh;
252b5132
RH		 4929
4930 dynobj = elf_hash_table (info)->dynobj;
e5a52504 4931 htab = elf32_arm_hash_table (info);
b7693d02 4932 eh = (struct elf32_arm_link_hash_entry *) h;
252b5132
RH		 4933
4934 if (h->plt.offset != (bfd_vma) -1)
4935 {
4936 asection * splt;
252b5132 4937 asection * srel;
e5a52504 4938 bfd_byte *loc;
24a1ba0f 4939 bfd_vma plt_index;
947216bf 4940 Elf_Internal_Rela rel;
252b5132
RH		 4941
4942 /* This symbol has an entry in the procedure linkage table. Set
4943 it up. */
4944
4945 BFD_ASSERT (h->dynindx != -1);
4946
4947 splt = bfd_get_section_by_name (dynobj, ".plt");
252b5132 4948 srel = bfd_get_section_by_name (dynobj, ".rel.plt");
e5a52504 4949 BFD_ASSERT (splt != NULL && srel != NULL);
252b5132 4950
e5a52504
MM		 4951 /* Fill in the entry in the procedure linkage table. */
4952 if (htab->symbian_p)
4953 {
4954 unsigned i;
4955 for (i = 0; i < htab->plt_entry_size / 4; ++i)
4956 bfd_put_32 (output_bfd,
4957 elf32_arm_symbian_plt_entry[i],
4958 splt->contents + h->plt.offset + 4 * i);
4959
4960 /* Fill in the entry in the .rel.plt section. */
2a1b9a48
MM		 4961 rel.r_offset = (splt->output_section->vma
4962 + splt->output_offset
e5a52504
MM		 4963 + h->plt.offset + 4 * (i - 1));
4964 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
b7693d02
DJ		 4965
4966 /* Get the index in the procedure linkage table which
4967 corresponds to this symbol. This is the index of this symbol
4968 in all the symbols for which we are making plt entries. The
4969 first entry in the procedure linkage table is reserved. */
4970 plt_index = ((h->plt.offset - htab->plt_header_size)
4971 / htab->plt_entry_size);
e5a52504
MM		 4972 }
4973 else
4974 {
4975 bfd_vma got_offset;
4976 bfd_vma got_displacement;
4977 asection * sgot;
4978
4979 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
4980 BFD_ASSERT (sgot != NULL);
4981
b7693d02
DJ		 4982 /* Get the offset into the .got.plt table of the entry that
4983 corresponds to this function. */
4984 got_offset = eh->plt_got_offset;
4985
4986 /* Get the index in the procedure linkage table which
4987 corresponds to this symbol. This is the index of this symbol
4988 in all the symbols for which we are making plt entries. The
4989 first three entries in .got.plt are reserved; after that
4990 symbols appear in the same order as in .plt. */
4991 plt_index = (got_offset - 12) / 4;
e5a52504
MM		 4992
4993 /* Calculate the displacement between the PLT slot and the
b7693d02
DJ		 4994 entry in the GOT. The eight-byte offset accounts for the
4995 value produced by adding to pc in the first instruction
4996 of the PLT stub. */
e5a52504
MM		 4997 got_displacement = (sgot->output_section->vma
4998 + sgot->output_offset
4999 + got_offset
5000 - splt->output_section->vma
5001 - splt->output_offset
5002 - h->plt.offset
5003 - 8);
5e681ec4 5004
e5a52504 5005 BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
5e681ec4 5006
b7693d02
DJ		 5007 if (eh->plt_thumb_refcount > 0)
5008 {
5009 bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[0],
5010 splt->contents + h->plt.offset - 4);
5011 bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[1],
5012 splt->contents + h->plt.offset - 2);
5013 }
5014
e5a52504
MM		 5015 bfd_put_32 (output_bfd, elf32_arm_plt_entry[0] | ((got_displacement & 0x0ff00000) >> 20),
5016 splt->contents + h->plt.offset + 0);
5017 bfd_put_32 (output_bfd, elf32_arm_plt_entry[1] | ((got_displacement & 0x000ff000) >> 12),
5018 splt->contents + h->plt.offset + 4);
5019 bfd_put_32 (output_bfd, elf32_arm_plt_entry[2] | (got_displacement & 0x00000fff),
5020 splt->contents + h->plt.offset + 8);
5e681ec4 5021#ifdef FOUR_WORD_PLT
e5a52504
MM		 5022 bfd_put_32 (output_bfd, elf32_arm_plt_entry[3],
5023 splt->contents + h->plt.offset + 12);
5e681ec4 5024#endif
252b5132 5025
e5a52504
MM		 5026 /* Fill in the entry in the global offset table. */
5027 bfd_put_32 (output_bfd,
5028 (splt->output_section->vma
5029 + splt->output_offset),
5030 sgot->contents + got_offset);
5031
5032 /* Fill in the entry in the .rel.plt section. */
5033 rel.r_offset = (sgot->output_section->vma
5034 + sgot->output_offset
5035 + got_offset);
5036 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
5037 }
57e8b36a 5038
947216bf
AM		 5039 loc = srel->contents + plt_index * sizeof (Elf32_External_Rel);
5040 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 5041
f5385ebf 5042 if (!h->def_regular)
252b5132
RH		 5043 {
5044 /* Mark the symbol as undefined, rather than as defined in
5045 the .plt section. Leave the value alone. */
5046 sym->st_shndx = SHN_UNDEF;
d982ba73
PB		 5047 /* If the symbol is weak, we do need to clear the value.
5048 Otherwise, the PLT entry would provide a definition for
5049 the symbol even if the symbol wasn't defined anywhere,
5050 and so the symbol would never be NULL. */
f5385ebf 5051 if (!h->ref_regular_nonweak)
d982ba73 5052 sym->st_value = 0;
252b5132
RH		 5053 }
5054 }
5055
5056 if (h->got.offset != (bfd_vma) -1)
5057 {
5058 asection * sgot;
5059 asection * srel;
947216bf
AM		 5060 Elf_Internal_Rela rel;
5061 bfd_byte *loc;
252b5132
RH		 5062
5063 /* This symbol has an entry in the global offset table. Set it
5064 up. */
252b5132
RH		 5065 sgot = bfd_get_section_by_name (dynobj, ".got");
5066 srel = bfd_get_section_by_name (dynobj, ".rel.got");
5067 BFD_ASSERT (sgot != NULL && srel != NULL);
5068
5069 rel.r_offset = (sgot->output_section->vma
5070 + sgot->output_offset
dc810e39 5071 + (h->got.offset &~ (bfd_vma) 1));
252b5132 5072
5e681ec4
PB		 5073 /* If this is a static link, or it is a -Bsymbolic link and the
5074 symbol is defined locally or was forced to be local because
5075 of a version file, we just want to emit a RELATIVE reloc.
5076 The entry in the global offset table will already have been
5077 initialized in the relocate_section function. */
252b5132 5078 if (info->shared
5e681ec4
PB		 5079 && SYMBOL_REFERENCES_LOCAL (info, h))
5080 {
5081 BFD_ASSERT((h->got.offset & 1) != 0);
5082 rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
5083 }
252b5132
RH		 5084 else
5085 {
5e681ec4 5086 BFD_ASSERT((h->got.offset & 1) == 0);
252b5132
RH		 5087 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
5088 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
5089 }
5090
947216bf
AM		 5091 loc = srel->contents + srel->reloc_count++ * sizeof (Elf32_External_Rel);
5092 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 5093 }
5094
f5385ebf 5095 if (h->needs_copy)
252b5132
RH		 5096 {
5097 asection * s;
947216bf
AM		 5098 Elf_Internal_Rela rel;
5099 bfd_byte *loc;
252b5132
RH		 5100
5101 /* This symbol needs a copy reloc. Set it up. */
252b5132
RH		 5102 BFD_ASSERT (h->dynindx != -1
5103 && (h->root.type == bfd_link_hash_defined
5104 || h->root.type == bfd_link_hash_defweak));
5105
5106 s = bfd_get_section_by_name (h->root.u.def.section->owner,
5107 ".rel.bss");
5108 BFD_ASSERT (s != NULL);
5109
5110 rel.r_offset = (h->root.u.def.value
5111 + h->root.u.def.section->output_section->vma
5112 + h->root.u.def.section->output_offset);
5113 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
947216bf
AM		 5114 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rel);
5115 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 5116 }
5117
5118 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
5119 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
5120 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
5121 sym->st_shndx = SHN_ABS;
5122
b34976b6 5123 return TRUE;
252b5132
RH		 5124}
5125
5126/* Finish up the dynamic sections. */
5127
b34976b6 5128static bfd_boolean
57e8b36a 5129elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
252b5132
RH		 5130{
5131 bfd * dynobj;
5132 asection * sgot;
5133 asection * sdyn;
5134
5135 dynobj = elf_hash_table (info)->dynobj;
5136
5137 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
229fcec5 5138 BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL);
252b5132
RH		 5139 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
5140
5141 if (elf_hash_table (info)->dynamic_sections_created)
5142 {
5143 asection *splt;
5144 Elf32_External_Dyn *dyncon, *dynconend;
229fcec5 5145 struct elf32_arm_link_hash_table *htab;
252b5132 5146
229fcec5 5147 htab = elf32_arm_hash_table (info);
252b5132 5148 splt = bfd_get_section_by_name (dynobj, ".plt");
24a1ba0f 5149 BFD_ASSERT (splt != NULL && sdyn != NULL);
252b5132
RH		 5150
5151 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 5152 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9b485d32 5153
252b5132
RH		 5154 for (; dyncon < dynconend; dyncon++)
5155 {
5156 Elf_Internal_Dyn dyn;
5157 const char * name;
5158 asection * s;
5159
5160 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
5161
5162 switch (dyn.d_tag)
5163 {
229fcec5
MM		 5164 unsigned int type;
5165
252b5132
RH		 5166 default:
5167 break;
5168
229fcec5
MM		 5169 case DT_HASH:
5170 name = ".hash";
5171 goto get_vma_if_bpabi;
5172 case DT_STRTAB:
5173 name = ".dynstr";
5174 goto get_vma_if_bpabi;
5175 case DT_SYMTAB:
5176 name = ".dynsym";
5177 goto get_vma_if_bpabi;
c0042f5d
MM		 5178 case DT_VERSYM:
5179 name = ".gnu.version";
5180 goto get_vma_if_bpabi;
5181 case DT_VERDEF:
5182 name = ".gnu.version_d";
5183 goto get_vma_if_bpabi;
5184 case DT_VERNEED:
5185 name = ".gnu.version_r";
5186 goto get_vma_if_bpabi;
5187
252b5132
RH		 5188 case DT_PLTGOT:
5189 name = ".got";
5190 goto get_vma;
5191 case DT_JMPREL:
5192 name = ".rel.plt";
5193 get_vma:
5194 s = bfd_get_section_by_name (output_bfd, name);
5195 BFD_ASSERT (s != NULL);
229fcec5
MM		 5196 if (!htab->symbian_p)
5197 dyn.d_un.d_ptr = s->vma;
5198 else
5199 /* In the BPABI, tags in the PT_DYNAMIC section point
5200 at the file offset, not the memory address, for the
5201 convenience of the post linker. */
5202 dyn.d_un.d_ptr = s->filepos;
252b5132
RH		 5203 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5204 break;
5205
229fcec5
MM		 5206 get_vma_if_bpabi:
5207 if (htab->symbian_p)
5208 goto get_vma;
5209 break;
5210
252b5132
RH		 5211 case DT_PLTRELSZ:
5212 s = bfd_get_section_by_name (output_bfd, ".rel.plt");
5213 BFD_ASSERT (s != NULL);
eea6121a 5214 dyn.d_un.d_val = s->size;
252b5132
RH		 5215 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5216 break;
229fcec5 5217
252b5132 5218 case DT_RELSZ:
229fcec5
MM		 5219 if (!htab->symbian_p)
5220 {
5221 /* My reading of the SVR4 ABI indicates that the
5222 procedure linkage table relocs (DT_JMPREL) should be
5223 included in the overall relocs (DT_REL). This is
5224 what Solaris does. However, UnixWare can not handle
5225 that case. Therefore, we override the DT_RELSZ entry
5226 here to make it not include the JMPREL relocs. Since
5227 the linker script arranges for .rel.plt to follow all
5228 other relocation sections, we don't have to worry
5229 about changing the DT_REL entry. */
5230 s = bfd_get_section_by_name (output_bfd, ".rel.plt");
5231 if (s != NULL)
5232 dyn.d_un.d_val -= s->size;
5233 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5234 break;
5235 }
5236 /* Fall through */
5237
5238 case DT_REL:
5239 case DT_RELA:
5240 case DT_RELASZ:
5241 /* In the BPABI, the DT_REL tag must point at the file
5242 offset, not the VMA, of the first relocation
5243 section. So, we use code similar to that in
5244 elflink.c, but do not check for SHF_ALLOC on the
5245 relcoation section, since relocations sections are
5246 never allocated under the BPABI. The comments above
5247 about Unixware notwithstanding, we include all of the
5248 relocations here. */
5249 if (htab->symbian_p)
5250 {
5251 unsigned int i;
5252 type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
5253 ? SHT_REL : SHT_RELA);
5254 dyn.d_un.d_val = 0;
5255 for (i = 1; i < elf_numsections (output_bfd); i++)
5256 {
5257 Elf_Internal_Shdr *hdr
5258 = elf_elfsections (output_bfd)[i];
5259 if (hdr->sh_type == type)
5260 {
5261 if (dyn.d_tag == DT_RELSZ
5262 || dyn.d_tag == DT_RELASZ)
5263 dyn.d_un.d_val += hdr->sh_size;
de52dba4
AM		 5264 else if ((ufile_ptr) hdr->sh_offset
5265 <= dyn.d_un.d_val - 1)
229fcec5
MM		 5266 dyn.d_un.d_val = hdr->sh_offset;
5267 }
5268 }
5269 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
5270 }
252b5132 5271 break;
88f7bcd5
NC		 5272
5273 /* Set the bottom bit of DT_INIT/FINI if the
5274 corresponding function is Thumb. */
5275 case DT_INIT:
5276 name = info->init_function;
5277 goto get_sym;
5278 case DT_FINI:
5279 name = info->fini_function;
5280 get_sym:
5281 /* If it wasn't set by elf_bfd_final_link
4cc11e76 5282 then there is nothing to adjust. */
88f7bcd5
NC		 5283 if (dyn.d_un.d_val != 0)
5284 {
5285 struct elf_link_hash_entry * eh;
5286
5287 eh = elf_link_hash_lookup (elf_hash_table (info), name,
b34976b6 5288 FALSE, FALSE, TRUE);
88f7bcd5
NC		 5289 if (eh != (struct elf_link_hash_entry *) NULL
5290 && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC)
5291 {
5292 dyn.d_un.d_val |= 1;
b34976b6 5293 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
88f7bcd5
NC		 5294 }
5295 }
5296 break;
252b5132
RH		 5297 }
5298 }
5299
24a1ba0f 5300 /* Fill in the first entry in the procedure linkage table. */
e5a52504 5301 if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size)
f7a74f8c 5302 {
5e681ec4
PB		 5303 bfd_vma got_displacement;
5304
5305 /* Calculate the displacement between the PLT slot and &GOT[0]. */
5306 got_displacement = (sgot->output_section->vma
5307 + sgot->output_offset
5308 - splt->output_section->vma
5309 - splt->output_offset
5310 - 16);
5311
f7a74f8c
NC		 5312 bfd_put_32 (output_bfd, elf32_arm_plt0_entry[0], splt->contents + 0);
5313 bfd_put_32 (output_bfd, elf32_arm_plt0_entry[1], splt->contents + 4);
5314 bfd_put_32 (output_bfd, elf32_arm_plt0_entry[2], splt->contents + 8);
5315 bfd_put_32 (output_bfd, elf32_arm_plt0_entry[3], splt->contents + 12);
5e681ec4
PB		 5316#ifdef FOUR_WORD_PLT
5317 /* The displacement value goes in the otherwise-unused last word of
5318 the second entry. */
5319 bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
5320#else
5321 bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
5322#endif
f7a74f8c 5323 }
252b5132
RH		 5324
5325 /* UnixWare sets the entsize of .plt to 4, although that doesn't
5326 really seem like the right value. */
5327 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
5328 }
5329
5330 /* Fill in the first three entries in the global offset table. */
229fcec5 5331 if (sgot)
252b5132 5332 {
229fcec5
MM		 5333 if (sgot->size > 0)
5334 {
5335 if (sdyn == NULL)
5336 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
5337 else
5338 bfd_put_32 (output_bfd,
5339 sdyn->output_section->vma + sdyn->output_offset,
5340 sgot->contents);
5341 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
5342 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
5343 }
252b5132 5344
229fcec5
MM		 5345 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
5346 }
252b5132 5347
b34976b6 5348 return TRUE;
252b5132
RH		 5349}
5350
ba96a88f 5351static void
57e8b36a 5352elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
ba96a88f 5353{
9b485d32 5354 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
e489d0ae 5355 struct elf32_arm_link_hash_table *globals;
ba96a88f
NC		 5356
5357 i_ehdrp = elf_elfheader (abfd);
5358
94a3258f
PB		 5359 if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
5360 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
5361 else
5362 i_ehdrp->e_ident[EI_OSABI] = 0;
ba96a88f 5363 i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
e489d0ae 5364
93204d3a
PB		 5365 if (link_info)
5366 {
5367 globals = elf32_arm_hash_table (link_info);
5368 if (globals->byteswap_code)
5369 i_ehdrp->e_flags |= EF_ARM_BE8;
5370 }
ba96a88f
NC		 5371}
5372
99e4ae17 5373static enum elf_reloc_type_class
57e8b36a 5374elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
99e4ae17 5375{
f51e552e 5376 switch ((int) ELF32_R_TYPE (rela->r_info))
99e4ae17
AJ		 5377 {
5378 case R_ARM_RELATIVE:
5379 return reloc_class_relative;
5380 case R_ARM_JUMP_SLOT:
5381 return reloc_class_plt;
5382 case R_ARM_COPY:
5383 return reloc_class_copy;
5384 default:
5385 return reloc_class_normal;
5386 }
5387}
5388
e16bb312
NC		 5389/* Set the right machine number for an Arm ELF file. */
5390
5391static bfd_boolean
57e8b36a 5392elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
e16bb312
NC		 5393{
5394 if (hdr->sh_type == SHT_NOTE)
5395 *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
5396
5397 return TRUE;
5398}
5399
e489d0ae 5400static void
57e8b36a 5401elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
e16bb312 5402{
5a6c6817 5403 bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
e16bb312
NC		 5404}
5405
40a18ebd
NC		 5406/* Return TRUE if this is an unwinding table entry. */
5407
5408static bfd_boolean
5409is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
5410{
5411 size_t len1, len2;
5412
5413 len1 = sizeof (ELF_STRING_ARM_unwind) - 1;
5414 len2 = sizeof (ELF_STRING_ARM_unwind_once) - 1;
5415 return (strncmp (name, ELF_STRING_ARM_unwind, len1) == 0
5416 || strncmp (name, ELF_STRING_ARM_unwind_once, len2) == 0);
5417}
5418
5419
5420/* Set the type and flags for an ARM section. We do this by
5421 the section name, which is a hack, but ought to work. */
5422
5423static bfd_boolean
5424elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
5425{
5426 const char * name;
5427
5428 name = bfd_get_section_name (abfd, sec);
5429
5430 if (is_arm_elf_unwind_section_name (abfd, name))
5431 {
5432 hdr->sh_type = SHT_ARM_EXIDX;
5433 hdr->sh_flags |= SHF_LINK_ORDER;
5434 }
5435 return TRUE;
5436}
5437
5438/* Handle an ARM specific section when reading an object file.
5439 This is called when elf.c finds a section with an unknown type. */
5440
5441static bfd_boolean
5442elf32_arm_section_from_shdr (bfd *abfd,
5443 Elf_Internal_Shdr * hdr,
5444 const char *name)
5445{
5446 /* There ought to be a place to keep ELF backend specific flags, but
5447 at the moment there isn't one. We just keep track of the
5448 sections by their name, instead. Fortunately, the ABI gives
5449 names for all the ARM specific sections, so we will probably get
5450 away with this. */
5451 switch (hdr->sh_type)
5452 {
5453 case SHT_ARM_EXIDX:
5454 break;
5455
5456 default:
5457 return FALSE;
5458 }
5459
5460 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
5461 return FALSE;
5462
5463 return TRUE;
5464}
e489d0ae
PB		 5465
5466/* Called for each symbol. Builds a section map based on mapping symbols.
5467 Does not alter any of the symbols. */
5468
5469static bfd_boolean
5470elf32_arm_output_symbol_hook (struct bfd_link_info *info,
5471 const char *name,
5472 Elf_Internal_Sym *elfsym,
5473 asection *input_sec,
5474 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
5475{
5476 int mapcount;
5477 elf32_arm_section_map *map;
5478 struct elf32_arm_link_hash_table *globals;
5479
5480 /* Only do this on final link. */
5481 if (info->relocatable)
5482 return TRUE;
5483
5484 /* Only build a map if we need to byteswap code. */
5485 globals = elf32_arm_hash_table (info);
5486 if (!globals->byteswap_code)
5487 return TRUE;
5488
5489 /* We only want mapping symbols. */
0367ecfb 5490 if (! is_arm_mapping_symbol_name (name))
e489d0ae
PB		 5491 return TRUE;
5492
5493 mapcount = ++(elf32_arm_section_data (input_sec)->mapcount);
5494 map = elf32_arm_section_data (input_sec)->map;
5495 /* TODO: This may be inefficient, but we probably don't usually have many
5496 mapping symbols per section. */
5497 map = bfd_realloc (map, mapcount * sizeof (elf32_arm_section_map));
5498 elf32_arm_section_data (input_sec)->map = map;
57e8b36a 5499
e489d0ae
PB		 5500 map[mapcount - 1].vma = elfsym->st_value;
5501 map[mapcount - 1].type = name[1];
5502 return TRUE;
5503}
5504
5505
5506/* Allocate target specific section data. */
5507
5508static bfd_boolean
5509elf32_arm_new_section_hook (bfd *abfd, asection *sec)
5510{
5511 struct _arm_elf_section_data *sdata;
5512 bfd_size_type amt = sizeof (*sdata);
5513
5514 sdata = bfd_zalloc (abfd, amt);
5515 if (sdata == NULL)
5516 return FALSE;
5517 sec->used_by_bfd = sdata;
5518
5519 return _bfd_elf_new_section_hook (abfd, sec);
5520}
5521
5522
5523/* Used to order a list of mapping symbols by address. */
5524
5525static int
5526elf32_arm_compare_mapping (const void * a, const void * b)
5527{
5528 return ((const elf32_arm_section_map *) a)->vma
5529 > ((const elf32_arm_section_map *) b)->vma;
5530}
5531
5532
5533/* Do code byteswapping. Return FALSE afterwards so that the section is
5534 written out as normal. */
5535
5536static bfd_boolean
5537elf32_arm_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, asection *sec,
5538 bfd_byte *contents)
5539{
5540 int mapcount;
5541 elf32_arm_section_map *map;
5542 bfd_vma ptr;
5543 bfd_vma end;
5544 bfd_vma offset;
5545 bfd_byte tmp;
5546 int i;
57e8b36a 5547
e489d0ae
PB		 5548 mapcount = elf32_arm_section_data (sec)->mapcount;
5549 map = elf32_arm_section_data (sec)->map;
5550
5551 if (mapcount == 0)
5552 return FALSE;
5553
5554 qsort (map, mapcount, sizeof (elf32_arm_section_map),
5555 elf32_arm_compare_mapping);
5556
5557 offset = sec->output_section->vma + sec->output_offset;
5558 ptr = map[0].vma - offset;
5559 for (i = 0; i < mapcount; i++)
5560 {
5561 if (i == mapcount - 1)
eea6121a 5562 end = sec->size;
e489d0ae
PB		 5563 else
5564 end = map[i + 1].vma - offset;
57e8b36a 5565
e489d0ae
PB		 5566 switch (map[i].type)
5567 {
5568 case 'a':
5569 /* Byte swap code words. */
5570 while (ptr + 3 < end)
5571 {
5572 tmp = contents[ptr];
5573 contents[ptr] = contents[ptr + 3];
5574 contents[ptr + 3] = tmp;
5575 tmp = contents[ptr + 1];
5576 contents[ptr + 1] = contents[ptr + 2];
5577 contents[ptr + 2] = tmp;
5578 ptr += 4;
5579 }
5580 break;
5581
5582 case 't':
5583 /* Byte swap code halfwords. */
5584 while (ptr + 1 < end)
5585 {
5586 tmp = contents[ptr];
5587 contents[ptr] = contents[ptr + 1];
5588 contents[ptr + 1] = tmp;
5589 ptr += 2;
5590 }
5591 break;
5592
5593 case 'd':
5594 /* Leave data alone. */
5595 break;
5596 }
5597 ptr = end;
5598 }
93204d3a 5599 free (map);
e489d0ae
PB		 5600 return FALSE;
5601}
5602
b7693d02
DJ		 5603/* Display STT_ARM_TFUNC symbols as functions. */
5604
5605static void
5606elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
5607 asymbol *asym)
5608{
5609 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
5610
5611 if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC)
5612 elfsym->symbol.flags |= BSF_FUNCTION;
5613}
5614
0beaef2b
PB		 5615
5616/* Mangle thumb function symbols as we read them in. */
5617
5618static void
5619elf32_arm_swap_symbol_in (bfd * abfd,
5620 const void *psrc,
5621 const void *pshn,
5622 Elf_Internal_Sym *dst)
5623{
5624 bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst);
5625
5626 /* New EABI objects mark thumb function symbols by setting the low bit of
5627 the address. Turn these into STT_ARM_TFUNC. */
5628 if (ELF_ST_TYPE (dst->st_info) == STT_FUNC
5629 && (dst->st_value & 1))
5630 {
5631 dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
5632 dst->st_value &= ~(bfd_vma) 1;
5633 }
5634}
5635
5636
5637/* Mangle thumb function symbols as we write them out. */
5638
5639static void
5640elf32_arm_swap_symbol_out (bfd *abfd,
5641 const Elf_Internal_Sym *src,
5642 void *cdst,
5643 void *shndx)
5644{
5645 Elf_Internal_Sym newsym;
5646
5647 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
5648 of the address set, as per the new EABI. We do this unconditionally
5649 because objcopy does not set the elf header flags until after
5650 it writes out the symbol table. */
5651 if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC)
5652 {
5653 newsym = *src;
5654 newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
5655 newsym.st_value |= 1;
5656
5657 src = &newsym;
5658 }
5659 bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
5660}
5661
5662/* We use this to override swap_symbol_in and swap_symbol_out. */
5663const struct elf_size_info elf32_arm_size_info = {
5664 sizeof (Elf32_External_Ehdr),
5665 sizeof (Elf32_External_Phdr),
5666 sizeof (Elf32_External_Shdr),
5667 sizeof (Elf32_External_Rel),
5668 sizeof (Elf32_External_Rela),
5669 sizeof (Elf32_External_Sym),
5670 sizeof (Elf32_External_Dyn),
5671 sizeof (Elf_External_Note),
5672 4,
5673 1,
5674 32, 2,
5675 ELFCLASS32, EV_CURRENT,
5676 bfd_elf32_write_out_phdrs,
5677 bfd_elf32_write_shdrs_and_ehdr,
5678 bfd_elf32_write_relocs,
5679 elf32_arm_swap_symbol_in,
5680 elf32_arm_swap_symbol_out,
5681 bfd_elf32_slurp_reloc_table,
5682 bfd_elf32_slurp_symbol_table,
5683 bfd_elf32_swap_dyn_in,
5684 bfd_elf32_swap_dyn_out,
5685 bfd_elf32_swap_reloc_in,
5686 bfd_elf32_swap_reloc_out,
5687 bfd_elf32_swap_reloca_in,
5688 bfd_elf32_swap_reloca_out
5689};
5690
252b5132
RH		 5691#define ELF_ARCH bfd_arch_arm
5692#define ELF_MACHINE_CODE EM_ARM
d0facd1b
NC		 5693#ifdef __QNXTARGET__
5694#define ELF_MAXPAGESIZE 0x1000
5695#else
f21f3fe0 5696#define ELF_MAXPAGESIZE 0x8000
d0facd1b 5697#endif
252b5132 5698
99e4ae17
AJ		 5699#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
5700#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
252b5132
RH		 5701#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
5702#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
5703#define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
dc810e39 5704#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
252b5132 5705#define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
e489d0ae 5706#define bfd_elf32_new_section_hook elf32_arm_new_section_hook
3c9458e9 5707#define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
252b5132
RH		 5708
5709#define elf_backend_get_symbol_type elf32_arm_get_symbol_type
5710#define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
5711#define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
5712#define elf_backend_check_relocs elf32_arm_check_relocs
dc810e39 5713#define elf_backend_relocate_section elf32_arm_relocate_section
e489d0ae 5714#define elf_backend_write_section elf32_arm_write_section
252b5132 5715#define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
5e681ec4 5716#define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
252b5132
RH		 5717#define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
5718#define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
e489d0ae 5719#define elf_backend_link_output_symbol_hook elf32_arm_output_symbol_hook
252b5132 5720#define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
ba96a88f 5721#define elf_backend_post_process_headers elf32_arm_post_process_headers
99e4ae17 5722#define elf_backend_reloc_type_class elf32_arm_reloc_type_class
c178919b 5723#define elf_backend_object_p elf32_arm_object_p
e16bb312 5724#define elf_backend_section_flags elf32_arm_section_flags
40a18ebd
NC		 5725#define elf_backend_fake_sections elf32_arm_fake_sections
5726#define elf_backend_section_from_shdr elf32_arm_section_from_shdr
e16bb312 5727#define elf_backend_final_write_processing elf32_arm_final_write_processing
5e681ec4 5728#define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
b7693d02 5729#define elf_backend_symbol_processing elf32_arm_symbol_processing
0beaef2b 5730#define elf_backend_size_info elf32_arm_size_info
252b5132 5731
5e681ec4 5732#define elf_backend_can_refcount 1
252b5132
RH		 5733#define elf_backend_can_gc_sections 1
5734#define elf_backend_plt_readonly 1
5735#define elf_backend_want_got_plt 1
5736#define elf_backend_want_plt_sym 0
acf8aed4 5737#if !USE_REL
b491616a
AM		 5738#define elf_backend_rela_normal 1
5739#endif
252b5132 5740
04f7c78d 5741#define elf_backend_got_header_size 12
04f7c78d 5742
252b5132 5743#include "elf32-target.h"
7f266840
DJ		 5744
5745/* Symbian OS Targets */
5746
5747#undef TARGET_LITTLE_SYM
5748#define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
5749#undef TARGET_LITTLE_NAME
5750#define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
5751#undef TARGET_BIG_SYM
5752#define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
5753#undef TARGET_BIG_NAME
5754#define TARGET_BIG_NAME "elf32-bigarm-symbian"
5755
5756/* Like elf32_arm_link_hash_table_create -- but overrides
5757 appropriately for Symbian OS. */
5758static struct bfd_link_hash_table *
5759elf32_arm_symbian_link_hash_table_create (bfd *abfd)
5760{
5761 struct bfd_link_hash_table *ret;
5762
5763 ret = elf32_arm_link_hash_table_create (abfd);
5764 if (ret)
5765 {
5766 struct elf32_arm_link_hash_table *htab
5767 = (struct elf32_arm_link_hash_table *)ret;
5768 /* There is no PLT header for Symbian OS. */
5769 htab->plt_header_size = 0;
5770 /* The PLT entries are each three instructions. */
5771 htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry);
5772 htab->symbian_p = 1;
5773 }
5774 return ret;
5775}
5776
5777/* In a BPABI executable, the dynamic linking sections do not go in
5778 the loadable read-only segment. The post-linker may wish to refer
5779 to these sections, but they are not part of the final program
5780 image. */
5781static struct bfd_elf_special_section const
5782 elf32_arm_symbian_special_sections[]=
5783{
5784 { ".dynamic", 8, 0, SHT_DYNAMIC, 0 },
5785 { ".dynstr", 7, 0, SHT_STRTAB, 0 },
5786 { ".dynsym", 7, 0, SHT_DYNSYM, 0 },
5787 { ".got", 4, 0, SHT_PROGBITS, 0 },
5788 { ".hash", 5, 0, SHT_HASH, 0 },
5789 { NULL, 0, 0, 0, 0 }
5790};
5791
c3c76620 5792static void
b34af79c
MM		 5793elf32_arm_symbian_begin_write_processing (bfd *abfd,
5794 struct bfd_link_info *link_info
5795 ATTRIBUTE_UNUSED)
c3c76620
MM		 5796{
5797 /* BPABI objects are never loaded directly by an OS kernel; they are
5798 processed by a postlinker first, into an OS-specific format. If
5799 the D_PAGED bit is set on the file, BFD will align segments on
5800 page boundaries, so that an OS can directly map the file. With
5801 BPABI objects, that just results in wasted space. In addition,
5802 because we clear the D_PAGED bit, map_sections_to_segments will
5803 recognize that the program headers should not be mapped into any
5804 loadable segment. */
5805 abfd->flags &= ~D_PAGED;
5806}
7f266840
DJ		 5807
5808static bfd_boolean
b34af79c
MM		 5809elf32_arm_symbian_modify_segment_map (bfd *abfd,
5810 struct bfd_link_info *info
5811 ATTRIBUTE_UNUSED)
7f266840
DJ		 5812{
5813 struct elf_segment_map *m;
5814 asection *dynsec;
5815
7f266840
DJ		 5816 /* BPABI shared libraries and executables should have a PT_DYNAMIC
5817 segment. However, because the .dynamic section is not marked
5818 with SEC_LOAD, the generic ELF code will not create such a
5819 segment. */
5820 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
5821 if (dynsec)
5822 {
5823 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
5824 m->next = elf_tdata (abfd)->segment_map;
5825 elf_tdata (abfd)->segment_map = m;
5826 }
5827
5828 return TRUE;
5829}
5830
5831#undef elf32_bed
5832#define elf32_bed elf32_arm_symbian_bed
5833
5834/* The dynamic sections are not allocated on SymbianOS; the postlinker
5835 will process them and then discard them. */
5836#undef ELF_DYNAMIC_SEC_FLAGS
5837#define ELF_DYNAMIC_SEC_FLAGS \
5838 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
5839
5840#undef bfd_elf32_bfd_link_hash_table_create
5841#define bfd_elf32_bfd_link_hash_table_create \
5842 elf32_arm_symbian_link_hash_table_create
5843
5844#undef elf_backend_special_sections
5845#define elf_backend_special_sections elf32_arm_symbian_special_sections
5846
c3c76620
MM		 5847#undef elf_backend_begin_write_processing
5848#define elf_backend_begin_write_processing \
5849 elf32_arm_symbian_begin_write_processing
5850
7f266840
DJ		 5851#undef elf_backend_modify_segment_map
5852#define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
5853
5854/* There is no .got section for BPABI objects, and hence no header. */
5855#undef elf_backend_got_header_size
5856#define elf_backend_got_header_size 0
5857
5858/* Similarly, there is no .got.plt section. */
5859#undef elf_backend_want_got_plt
5860#define elf_backend_want_got_plt 0
5861
5862#include "elf32-target.h"
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