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[thirdparty/binutils-gdb.git] / bfd / elf32-arm.c
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252b5132 1/* 32-bit ELF support for ARM
4e7fd91e 2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
d1f161ea 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
3e110533 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
252b5132 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
7f266840
DJ		 31#define elf_info_to_howto 0
32#define elf_info_to_howto_rel elf32_arm_info_to_howto
33
34#define ARM_ELF_ABI_VERSION 0
35#define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
36
7f266840
DJ		 37/* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
38 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
39 in that slot. */
40
c19d1205 41static reloc_howto_type elf32_arm_howto_table_1[] =
7f266840
DJ		 42{
43 /* No relocation */
44 HOWTO (R_ARM_NONE, /* type */
45 0, /* rightshift */
46 0, /* size (0 = byte, 1 = short, 2 = long) */
47 0, /* bitsize */
48 FALSE, /* pc_relative */
49 0, /* bitpos */
50 complain_overflow_dont,/* complain_on_overflow */
51 bfd_elf_generic_reloc, /* special_function */
52 "R_ARM_NONE", /* name */
53 FALSE, /* partial_inplace */
54 0, /* src_mask */
55 0, /* dst_mask */
56 FALSE), /* pcrel_offset */
57
58 HOWTO (R_ARM_PC24, /* type */
59 2, /* rightshift */
60 2, /* size (0 = byte, 1 = short, 2 = long) */
61 24, /* bitsize */
62 TRUE, /* pc_relative */
63 0, /* bitpos */
64 complain_overflow_signed,/* complain_on_overflow */
65 bfd_elf_generic_reloc, /* special_function */
66 "R_ARM_PC24", /* name */
67 FALSE, /* partial_inplace */
68 0x00ffffff, /* src_mask */
69 0x00ffffff, /* dst_mask */
70 TRUE), /* pcrel_offset */
71
72 /* 32 bit absolute */
73 HOWTO (R_ARM_ABS32, /* type */
74 0, /* rightshift */
75 2, /* size (0 = byte, 1 = short, 2 = long) */
76 32, /* bitsize */
77 FALSE, /* pc_relative */
78 0, /* bitpos */
79 complain_overflow_bitfield,/* complain_on_overflow */
80 bfd_elf_generic_reloc, /* special_function */
81 "R_ARM_ABS32", /* name */
82 FALSE, /* partial_inplace */
83 0xffffffff, /* src_mask */
84 0xffffffff, /* dst_mask */
85 FALSE), /* pcrel_offset */
86
87 /* standard 32bit pc-relative reloc */
88 HOWTO (R_ARM_REL32, /* type */
89 0, /* rightshift */
90 2, /* size (0 = byte, 1 = short, 2 = long) */
91 32, /* bitsize */
92 TRUE, /* pc_relative */
93 0, /* bitpos */
94 complain_overflow_bitfield,/* complain_on_overflow */
95 bfd_elf_generic_reloc, /* special_function */
96 "R_ARM_REL32", /* name */
97 FALSE, /* partial_inplace */
98 0xffffffff, /* src_mask */
99 0xffffffff, /* dst_mask */
100 TRUE), /* pcrel_offset */
101
c19d1205 102 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
7f266840
DJ		 103 HOWTO (R_ARM_PC13, /* type */
104 0, /* rightshift */
105 0, /* size (0 = byte, 1 = short, 2 = long) */
106 8, /* bitsize */
107 FALSE, /* pc_relative */
108 0, /* bitpos */
109 complain_overflow_bitfield,/* complain_on_overflow */
110 bfd_elf_generic_reloc, /* special_function */
111 "R_ARM_PC13", /* name */
112 FALSE, /* partial_inplace */
113 0x000000ff, /* src_mask */
114 0x000000ff, /* dst_mask */
115 FALSE), /* pcrel_offset */
116
117 /* 16 bit absolute */
118 HOWTO (R_ARM_ABS16, /* type */
119 0, /* rightshift */
120 1, /* size (0 = byte, 1 = short, 2 = long) */
121 16, /* bitsize */
122 FALSE, /* pc_relative */
123 0, /* bitpos */
124 complain_overflow_bitfield,/* complain_on_overflow */
125 bfd_elf_generic_reloc, /* special_function */
126 "R_ARM_ABS16", /* name */
127 FALSE, /* partial_inplace */
128 0x0000ffff, /* src_mask */
129 0x0000ffff, /* dst_mask */
130 FALSE), /* pcrel_offset */
131
132 /* 12 bit absolute */
133 HOWTO (R_ARM_ABS12, /* type */
134 0, /* rightshift */
135 2, /* size (0 = byte, 1 = short, 2 = long) */
136 12, /* bitsize */
137 FALSE, /* pc_relative */
138 0, /* bitpos */
139 complain_overflow_bitfield,/* complain_on_overflow */
140 bfd_elf_generic_reloc, /* special_function */
141 "R_ARM_ABS12", /* name */
142 FALSE, /* partial_inplace */
143 0x000008ff, /* src_mask */
144 0x000008ff, /* dst_mask */
145 FALSE), /* pcrel_offset */
146
147 HOWTO (R_ARM_THM_ABS5, /* type */
148 6, /* rightshift */
149 1, /* size (0 = byte, 1 = short, 2 = long) */
150 5, /* bitsize */
151 FALSE, /* pc_relative */
152 0, /* bitpos */
153 complain_overflow_bitfield,/* complain_on_overflow */
154 bfd_elf_generic_reloc, /* special_function */
155 "R_ARM_THM_ABS5", /* name */
156 FALSE, /* partial_inplace */
157 0x000007e0, /* src_mask */
158 0x000007e0, /* dst_mask */
159 FALSE), /* pcrel_offset */
160
161 /* 8 bit absolute */
162 HOWTO (R_ARM_ABS8, /* type */
163 0, /* rightshift */
164 0, /* size (0 = byte, 1 = short, 2 = long) */
165 8, /* bitsize */
166 FALSE, /* pc_relative */
167 0, /* bitpos */
168 complain_overflow_bitfield,/* complain_on_overflow */
169 bfd_elf_generic_reloc, /* special_function */
170 "R_ARM_ABS8", /* name */
171 FALSE, /* partial_inplace */
172 0x000000ff, /* src_mask */
173 0x000000ff, /* dst_mask */
174 FALSE), /* pcrel_offset */
175
176 HOWTO (R_ARM_SBREL32, /* type */
177 0, /* rightshift */
178 2, /* size (0 = byte, 1 = short, 2 = long) */
179 32, /* bitsize */
180 FALSE, /* pc_relative */
181 0, /* bitpos */
182 complain_overflow_dont,/* complain_on_overflow */
183 bfd_elf_generic_reloc, /* special_function */
184 "R_ARM_SBREL32", /* name */
185 FALSE, /* partial_inplace */
186 0xffffffff, /* src_mask */
187 0xffffffff, /* dst_mask */
188 FALSE), /* pcrel_offset */
189
c19d1205
ZW		 190 /* FIXME: Has two more bits of offset in Thumb32. */
191 HOWTO (R_ARM_THM_CALL, /* type */
7f266840
DJ		 192 1, /* rightshift */
193 2, /* size (0 = byte, 1 = short, 2 = long) */
194 23, /* bitsize */
195 TRUE, /* pc_relative */
196 0, /* bitpos */
197 complain_overflow_signed,/* complain_on_overflow */
198 bfd_elf_generic_reloc, /* special_function */
c19d1205 199 "R_ARM_THM_CALL", /* name */
7f266840
DJ		 200 FALSE, /* partial_inplace */
201 0x07ff07ff, /* src_mask */
202 0x07ff07ff, /* dst_mask */
203 TRUE), /* pcrel_offset */
204
205 HOWTO (R_ARM_THM_PC8, /* type */
206 1, /* rightshift */
207 1, /* size (0 = byte, 1 = short, 2 = long) */
208 8, /* bitsize */
209 TRUE, /* pc_relative */
210 0, /* bitpos */
211 complain_overflow_signed,/* complain_on_overflow */
212 bfd_elf_generic_reloc, /* special_function */
213 "R_ARM_THM_PC8", /* name */
214 FALSE, /* partial_inplace */
215 0x000000ff, /* src_mask */
216 0x000000ff, /* dst_mask */
217 TRUE), /* pcrel_offset */
218
c19d1205 219 HOWTO (R_ARM_BREL_ADJ, /* type */
7f266840
DJ		 220 1, /* rightshift */
221 1, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205
ZW		 222 32, /* bitsize */
223 FALSE, /* pc_relative */
7f266840
DJ		 224 0, /* bitpos */
225 complain_overflow_signed,/* complain_on_overflow */
226 bfd_elf_generic_reloc, /* special_function */
c19d1205 227 "R_ARM_BREL_ADJ", /* name */
7f266840 228 FALSE, /* partial_inplace */
c19d1205
ZW		 229 0xffffffff, /* src_mask */
230 0xffffffff, /* dst_mask */
231 FALSE), /* pcrel_offset */
7f266840
DJ		 232
233 HOWTO (R_ARM_SWI24, /* type */
234 0, /* rightshift */
235 0, /* size (0 = byte, 1 = short, 2 = long) */
236 0, /* bitsize */
237 FALSE, /* pc_relative */
238 0, /* bitpos */
239 complain_overflow_signed,/* complain_on_overflow */
240 bfd_elf_generic_reloc, /* special_function */
241 "R_ARM_SWI24", /* name */
242 FALSE, /* partial_inplace */
243 0x00000000, /* src_mask */
244 0x00000000, /* dst_mask */
245 FALSE), /* pcrel_offset */
246
247 HOWTO (R_ARM_THM_SWI8, /* type */
248 0, /* rightshift */
249 0, /* size (0 = byte, 1 = short, 2 = long) */
250 0, /* bitsize */
251 FALSE, /* pc_relative */
252 0, /* bitpos */
253 complain_overflow_signed,/* complain_on_overflow */
254 bfd_elf_generic_reloc, /* special_function */
255 "R_ARM_SWI8", /* name */
256 FALSE, /* partial_inplace */
257 0x00000000, /* src_mask */
258 0x00000000, /* dst_mask */
259 FALSE), /* pcrel_offset */
260
261 /* BLX instruction for the ARM. */
262 HOWTO (R_ARM_XPC25, /* type */
263 2, /* rightshift */
264 2, /* size (0 = byte, 1 = short, 2 = long) */
265 25, /* bitsize */
266 TRUE, /* pc_relative */
267 0, /* bitpos */
268 complain_overflow_signed,/* complain_on_overflow */
269 bfd_elf_generic_reloc, /* special_function */
270 "R_ARM_XPC25", /* name */
271 FALSE, /* partial_inplace */
272 0x00ffffff, /* src_mask */
273 0x00ffffff, /* dst_mask */
274 TRUE), /* pcrel_offset */
275
276 /* BLX instruction for the Thumb. */
277 HOWTO (R_ARM_THM_XPC22, /* type */
278 2, /* rightshift */
279 2, /* size (0 = byte, 1 = short, 2 = long) */
280 22, /* bitsize */
281 TRUE, /* pc_relative */
282 0, /* bitpos */
283 complain_overflow_signed,/* complain_on_overflow */
284 bfd_elf_generic_reloc, /* special_function */
285 "R_ARM_THM_XPC22", /* name */
286 FALSE, /* partial_inplace */
287 0x07ff07ff, /* src_mask */
288 0x07ff07ff, /* dst_mask */
289 TRUE), /* pcrel_offset */
290
ba93b8ac 291 /* Dynamic TLS relocations. */
7f266840 292
ba93b8ac
DJ		 293 HOWTO (R_ARM_TLS_DTPMOD32, /* type */
294 0, /* rightshift */
295 2, /* size (0 = byte, 1 = short, 2 = long) */
296 32, /* bitsize */
297 FALSE, /* pc_relative */
298 0, /* bitpos */
299 complain_overflow_bitfield,/* complain_on_overflow */
300 bfd_elf_generic_reloc, /* special_function */
301 "R_ARM_TLS_DTPMOD32", /* name */
302 TRUE, /* partial_inplace */
303 0xffffffff, /* src_mask */
304 0xffffffff, /* dst_mask */
305 FALSE), /* pcrel_offset */
7f266840 306
ba93b8ac
DJ		 307 HOWTO (R_ARM_TLS_DTPOFF32, /* type */
308 0, /* rightshift */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
310 32, /* bitsize */
311 FALSE, /* pc_relative */
312 0, /* bitpos */
313 complain_overflow_bitfield,/* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_ARM_TLS_DTPOFF32", /* name */
316 TRUE, /* partial_inplace */
317 0xffffffff, /* src_mask */
318 0xffffffff, /* dst_mask */
319 FALSE), /* pcrel_offset */
7f266840 320
ba93b8ac
DJ		 321 HOWTO (R_ARM_TLS_TPOFF32, /* type */
322 0, /* rightshift */
323 2, /* size (0 = byte, 1 = short, 2 = long) */
324 32, /* bitsize */
325 FALSE, /* pc_relative */
326 0, /* bitpos */
327 complain_overflow_bitfield,/* complain_on_overflow */
328 bfd_elf_generic_reloc, /* special_function */
329 "R_ARM_TLS_TPOFF32", /* name */
330 TRUE, /* partial_inplace */
331 0xffffffff, /* src_mask */
332 0xffffffff, /* dst_mask */
333 FALSE), /* pcrel_offset */
7f266840
DJ		 334
335 /* Relocs used in ARM Linux */
336
337 HOWTO (R_ARM_COPY, /* type */
338 0, /* rightshift */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
340 32, /* bitsize */
341 FALSE, /* pc_relative */
342 0, /* bitpos */
343 complain_overflow_bitfield,/* complain_on_overflow */
344 bfd_elf_generic_reloc, /* special_function */
345 "R_ARM_COPY", /* name */
346 TRUE, /* partial_inplace */
347 0xffffffff, /* src_mask */
348 0xffffffff, /* dst_mask */
349 FALSE), /* pcrel_offset */
350
351 HOWTO (R_ARM_GLOB_DAT, /* type */
352 0, /* rightshift */
353 2, /* size (0 = byte, 1 = short, 2 = long) */
354 32, /* bitsize */
355 FALSE, /* pc_relative */
356 0, /* bitpos */
357 complain_overflow_bitfield,/* complain_on_overflow */
358 bfd_elf_generic_reloc, /* special_function */
359 "R_ARM_GLOB_DAT", /* name */
360 TRUE, /* partial_inplace */
361 0xffffffff, /* src_mask */
362 0xffffffff, /* dst_mask */
363 FALSE), /* pcrel_offset */
364
365 HOWTO (R_ARM_JUMP_SLOT, /* type */
366 0, /* rightshift */
367 2, /* size (0 = byte, 1 = short, 2 = long) */
368 32, /* bitsize */
369 FALSE, /* pc_relative */
370 0, /* bitpos */
371 complain_overflow_bitfield,/* complain_on_overflow */
372 bfd_elf_generic_reloc, /* special_function */
373 "R_ARM_JUMP_SLOT", /* name */
374 TRUE, /* partial_inplace */
375 0xffffffff, /* src_mask */
376 0xffffffff, /* dst_mask */
377 FALSE), /* pcrel_offset */
378
379 HOWTO (R_ARM_RELATIVE, /* type */
380 0, /* rightshift */
381 2, /* size (0 = byte, 1 = short, 2 = long) */
382 32, /* bitsize */
383 FALSE, /* pc_relative */
384 0, /* bitpos */
385 complain_overflow_bitfield,/* complain_on_overflow */
386 bfd_elf_generic_reloc, /* special_function */
387 "R_ARM_RELATIVE", /* name */
388 TRUE, /* partial_inplace */
389 0xffffffff, /* src_mask */
390 0xffffffff, /* dst_mask */
391 FALSE), /* pcrel_offset */
392
c19d1205 393 HOWTO (R_ARM_GOTOFF32, /* type */
7f266840
DJ		 394 0, /* rightshift */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
396 32, /* bitsize */
397 FALSE, /* pc_relative */
398 0, /* bitpos */
399 complain_overflow_bitfield,/* complain_on_overflow */
400 bfd_elf_generic_reloc, /* special_function */
c19d1205 401 "R_ARM_GOTOFF32", /* name */
7f266840
DJ		 402 TRUE, /* partial_inplace */
403 0xffffffff, /* src_mask */
404 0xffffffff, /* dst_mask */
405 FALSE), /* pcrel_offset */
406
407 HOWTO (R_ARM_GOTPC, /* type */
408 0, /* rightshift */
409 2, /* size (0 = byte, 1 = short, 2 = long) */
410 32, /* bitsize */
411 TRUE, /* pc_relative */
412 0, /* bitpos */
413 complain_overflow_bitfield,/* complain_on_overflow */
414 bfd_elf_generic_reloc, /* special_function */
415 "R_ARM_GOTPC", /* name */
416 TRUE, /* partial_inplace */
417 0xffffffff, /* src_mask */
418 0xffffffff, /* dst_mask */
419 TRUE), /* pcrel_offset */
420
421 HOWTO (R_ARM_GOT32, /* type */
422 0, /* rightshift */
423 2, /* size (0 = byte, 1 = short, 2 = long) */
424 32, /* bitsize */
425 FALSE, /* pc_relative */
426 0, /* bitpos */
427 complain_overflow_bitfield,/* complain_on_overflow */
428 bfd_elf_generic_reloc, /* special_function */
429 "R_ARM_GOT32", /* name */
430 TRUE, /* partial_inplace */
431 0xffffffff, /* src_mask */
432 0xffffffff, /* dst_mask */
433 FALSE), /* pcrel_offset */
434
435 HOWTO (R_ARM_PLT32, /* type */
436 2, /* rightshift */
437 2, /* size (0 = byte, 1 = short, 2 = long) */
ce490eda 438 24, /* bitsize */
7f266840
DJ		 439 TRUE, /* pc_relative */
440 0, /* bitpos */
441 complain_overflow_bitfield,/* complain_on_overflow */
442 bfd_elf_generic_reloc, /* special_function */
443 "R_ARM_PLT32", /* name */
ce490eda 444 FALSE, /* partial_inplace */
7f266840
DJ		 445 0x00ffffff, /* src_mask */
446 0x00ffffff, /* dst_mask */
447 TRUE), /* pcrel_offset */
448
449 HOWTO (R_ARM_CALL, /* type */
450 2, /* rightshift */
451 2, /* size (0 = byte, 1 = short, 2 = long) */
452 24, /* bitsize */
453 TRUE, /* pc_relative */
454 0, /* bitpos */
455 complain_overflow_signed,/* complain_on_overflow */
456 bfd_elf_generic_reloc, /* special_function */
457 "R_ARM_CALL", /* name */
458 FALSE, /* partial_inplace */
459 0x00ffffff, /* src_mask */
460 0x00ffffff, /* dst_mask */
461 TRUE), /* pcrel_offset */
462
463 HOWTO (R_ARM_JUMP24, /* type */
464 2, /* rightshift */
465 2, /* size (0 = byte, 1 = short, 2 = long) */
466 24, /* bitsize */
467 TRUE, /* pc_relative */
468 0, /* bitpos */
469 complain_overflow_signed,/* complain_on_overflow */
470 bfd_elf_generic_reloc, /* special_function */
471 "R_ARM_JUMP24", /* name */
472 FALSE, /* partial_inplace */
473 0x00ffffff, /* src_mask */
474 0x00ffffff, /* dst_mask */
475 TRUE), /* pcrel_offset */
476
c19d1205
ZW		 477 HOWTO (R_ARM_THM_JUMP24, /* type */
478 1, /* rightshift */
479 2, /* size (0 = byte, 1 = short, 2 = long) */
480 24, /* bitsize */
481 TRUE, /* pc_relative */
7f266840 482 0, /* bitpos */
c19d1205 483 complain_overflow_signed,/* complain_on_overflow */
7f266840 484 bfd_elf_generic_reloc, /* special_function */
c19d1205 485 "R_ARM_THM_JUMP24", /* name */
7f266840 486 FALSE, /* partial_inplace */
c19d1205
ZW		 487 0x07ff2fff, /* src_mask */
488 0x07ff2fff, /* dst_mask */
489 TRUE), /* pcrel_offset */
7f266840 490
c19d1205 491 HOWTO (R_ARM_BASE_ABS, /* type */
7f266840 492 0, /* rightshift */
c19d1205
ZW		 493 2, /* size (0 = byte, 1 = short, 2 = long) */
494 32, /* bitsize */
7f266840
DJ		 495 FALSE, /* pc_relative */
496 0, /* bitpos */
497 complain_overflow_dont,/* complain_on_overflow */
498 bfd_elf_generic_reloc, /* special_function */
c19d1205 499 "R_ARM_BASE_ABS", /* name */
7f266840 500 FALSE, /* partial_inplace */
c19d1205
ZW		 501 0xffffffff, /* src_mask */
502 0xffffffff, /* dst_mask */
7f266840
DJ		 503 FALSE), /* pcrel_offset */
504
505 HOWTO (R_ARM_ALU_PCREL7_0, /* type */
506 0, /* rightshift */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
508 12, /* bitsize */
509 TRUE, /* pc_relative */
510 0, /* bitpos */
511 complain_overflow_dont,/* complain_on_overflow */
512 bfd_elf_generic_reloc, /* special_function */
513 "R_ARM_ALU_PCREL_7_0", /* name */
514 FALSE, /* partial_inplace */
515 0x00000fff, /* src_mask */
516 0x00000fff, /* dst_mask */
517 TRUE), /* pcrel_offset */
518
519 HOWTO (R_ARM_ALU_PCREL15_8, /* type */
520 0, /* rightshift */
521 2, /* size (0 = byte, 1 = short, 2 = long) */
522 12, /* bitsize */
523 TRUE, /* pc_relative */
524 8, /* bitpos */
525 complain_overflow_dont,/* complain_on_overflow */
526 bfd_elf_generic_reloc, /* special_function */
527 "R_ARM_ALU_PCREL_15_8",/* name */
528 FALSE, /* partial_inplace */
529 0x00000fff, /* src_mask */
530 0x00000fff, /* dst_mask */
531 TRUE), /* pcrel_offset */
532
533 HOWTO (R_ARM_ALU_PCREL23_15, /* type */
534 0, /* rightshift */
535 2, /* size (0 = byte, 1 = short, 2 = long) */
536 12, /* bitsize */
537 TRUE, /* pc_relative */
538 16, /* bitpos */
539 complain_overflow_dont,/* complain_on_overflow */
540 bfd_elf_generic_reloc, /* special_function */
541 "R_ARM_ALU_PCREL_23_15",/* name */
542 FALSE, /* partial_inplace */
543 0x00000fff, /* src_mask */
544 0x00000fff, /* dst_mask */
545 TRUE), /* pcrel_offset */
546
547 HOWTO (R_ARM_LDR_SBREL_11_0, /* type */
548 0, /* rightshift */
549 2, /* size (0 = byte, 1 = short, 2 = long) */
550 12, /* bitsize */
551 FALSE, /* pc_relative */
552 0, /* bitpos */
553 complain_overflow_dont,/* complain_on_overflow */
554 bfd_elf_generic_reloc, /* special_function */
555 "R_ARM_LDR_SBREL_11_0",/* name */
556 FALSE, /* partial_inplace */
557 0x00000fff, /* src_mask */
558 0x00000fff, /* dst_mask */
559 FALSE), /* pcrel_offset */
560
561 HOWTO (R_ARM_ALU_SBREL_19_12, /* type */
562 0, /* rightshift */
563 2, /* size (0 = byte, 1 = short, 2 = long) */
564 8, /* bitsize */
565 FALSE, /* pc_relative */
566 12, /* bitpos */
567 complain_overflow_dont,/* complain_on_overflow */
568 bfd_elf_generic_reloc, /* special_function */
569 "R_ARM_ALU_SBREL_19_12",/* name */
570 FALSE, /* partial_inplace */
571 0x000ff000, /* src_mask */
572 0x000ff000, /* dst_mask */
573 FALSE), /* pcrel_offset */
574
575 HOWTO (R_ARM_ALU_SBREL_27_20, /* type */
576 0, /* rightshift */
577 2, /* size (0 = byte, 1 = short, 2 = long) */
578 8, /* bitsize */
579 FALSE, /* pc_relative */
580 20, /* bitpos */
581 complain_overflow_dont,/* complain_on_overflow */
582 bfd_elf_generic_reloc, /* special_function */
583 "R_ARM_ALU_SBREL_27_20",/* name */
584 FALSE, /* partial_inplace */
585 0x0ff00000, /* src_mask */
586 0x0ff00000, /* dst_mask */
587 FALSE), /* pcrel_offset */
588
589 HOWTO (R_ARM_TARGET1, /* type */
590 0, /* rightshift */
591 2, /* size (0 = byte, 1 = short, 2 = long) */
592 32, /* bitsize */
593 FALSE, /* pc_relative */
594 0, /* bitpos */
595 complain_overflow_dont,/* complain_on_overflow */
596 bfd_elf_generic_reloc, /* special_function */
597 "R_ARM_TARGET1", /* name */
598 FALSE, /* partial_inplace */
599 0xffffffff, /* src_mask */
600 0xffffffff, /* dst_mask */
601 FALSE), /* pcrel_offset */
602
603 HOWTO (R_ARM_ROSEGREL32, /* type */
604 0, /* rightshift */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
606 32, /* bitsize */
607 FALSE, /* pc_relative */
608 0, /* bitpos */
609 complain_overflow_dont,/* complain_on_overflow */
610 bfd_elf_generic_reloc, /* special_function */
611 "R_ARM_ROSEGREL32", /* name */
612 FALSE, /* partial_inplace */
613 0xffffffff, /* src_mask */
614 0xffffffff, /* dst_mask */
615 FALSE), /* pcrel_offset */
616
617 HOWTO (R_ARM_V4BX, /* type */
618 0, /* rightshift */
619 2, /* size (0 = byte, 1 = short, 2 = long) */
620 32, /* bitsize */
621 FALSE, /* pc_relative */
622 0, /* bitpos */
623 complain_overflow_dont,/* complain_on_overflow */
624 bfd_elf_generic_reloc, /* special_function */
625 "R_ARM_V4BX", /* name */
626 FALSE, /* partial_inplace */
627 0xffffffff, /* src_mask */
628 0xffffffff, /* dst_mask */
629 FALSE), /* pcrel_offset */
630
631 HOWTO (R_ARM_TARGET2, /* type */
632 0, /* rightshift */
633 2, /* size (0 = byte, 1 = short, 2 = long) */
634 32, /* bitsize */
635 FALSE, /* pc_relative */
636 0, /* bitpos */
637 complain_overflow_signed,/* complain_on_overflow */
638 bfd_elf_generic_reloc, /* special_function */
639 "R_ARM_TARGET2", /* name */
640 FALSE, /* partial_inplace */
641 0xffffffff, /* src_mask */
642 0xffffffff, /* dst_mask */
643 TRUE), /* pcrel_offset */
644
645 HOWTO (R_ARM_PREL31, /* type */
646 0, /* rightshift */
647 2, /* size (0 = byte, 1 = short, 2 = long) */
648 31, /* bitsize */
649 TRUE, /* pc_relative */
650 0, /* bitpos */
651 complain_overflow_signed,/* complain_on_overflow */
652 bfd_elf_generic_reloc, /* special_function */
653 "R_ARM_PREL31", /* name */
654 FALSE, /* partial_inplace */
655 0x7fffffff, /* src_mask */
656 0x7fffffff, /* dst_mask */
657 TRUE), /* pcrel_offset */
c19d1205
ZW		 658
659 HOWTO (R_ARM_MOVW_ABS_NC, /* type */
660 0, /* rightshift */
661 2, /* size (0 = byte, 1 = short, 2 = long) */
662 16, /* bitsize */
663 FALSE, /* pc_relative */
664 0, /* bitpos */
665 complain_overflow_dont,/* complain_on_overflow */
666 bfd_elf_generic_reloc, /* special_function */
667 "R_ARM_MOVW_ABS_NC", /* name */
668 FALSE, /* partial_inplace */
669 0x0000ffff, /* src_mask */
670 0x0000ffff, /* dst_mask */
671 FALSE), /* pcrel_offset */
672
673 HOWTO (R_ARM_MOVT_ABS, /* type */
674 0, /* rightshift */
675 2, /* size (0 = byte, 1 = short, 2 = long) */
676 16, /* bitsize */
677 FALSE, /* pc_relative */
678 0, /* bitpos */
679 complain_overflow_bitfield,/* complain_on_overflow */
680 bfd_elf_generic_reloc, /* special_function */
681 "R_ARM_MOVT_ABS", /* name */
682 FALSE, /* partial_inplace */
683 0x0000ffff, /* src_mask */
684 0x0000ffff, /* dst_mask */
685 FALSE), /* pcrel_offset */
686
687 HOWTO (R_ARM_MOVW_PREL_NC, /* type */
688 0, /* rightshift */
689 2, /* size (0 = byte, 1 = short, 2 = long) */
690 16, /* bitsize */
691 TRUE, /* pc_relative */
692 0, /* bitpos */
693 complain_overflow_dont,/* complain_on_overflow */
694 bfd_elf_generic_reloc, /* special_function */
695 "R_ARM_MOVW_PREL_NC", /* name */
696 FALSE, /* partial_inplace */
697 0x0000ffff, /* src_mask */
698 0x0000ffff, /* dst_mask */
699 TRUE), /* pcrel_offset */
700
701 HOWTO (R_ARM_MOVT_PREL, /* type */
702 0, /* rightshift */
703 2, /* size (0 = byte, 1 = short, 2 = long) */
704 16, /* bitsize */
705 TRUE, /* pc_relative */
706 0, /* bitpos */
707 complain_overflow_bitfield,/* complain_on_overflow */
708 bfd_elf_generic_reloc, /* special_function */
709 "R_ARM_MOVT_PREL", /* name */
710 FALSE, /* partial_inplace */
711 0x0000ffff, /* src_mask */
712 0x0000ffff, /* dst_mask */
713 TRUE), /* pcrel_offset */
714
715 HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */
716 0, /* rightshift */
717 2, /* size (0 = byte, 1 = short, 2 = long) */
718 16, /* bitsize */
719 FALSE, /* pc_relative */
720 0, /* bitpos */
721 complain_overflow_dont,/* complain_on_overflow */
722 bfd_elf_generic_reloc, /* special_function */
723 "R_ARM_THM_MOVW_ABS_NC",/* name */
724 FALSE, /* partial_inplace */
725 0x040f70ff, /* src_mask */
726 0x040f70ff, /* dst_mask */
727 FALSE), /* pcrel_offset */
728
729 HOWTO (R_ARM_THM_MOVT_ABS, /* type */
730 0, /* rightshift */
731 2, /* size (0 = byte, 1 = short, 2 = long) */
732 16, /* bitsize */
733 FALSE, /* pc_relative */
734 0, /* bitpos */
735 complain_overflow_bitfield,/* complain_on_overflow */
736 bfd_elf_generic_reloc, /* special_function */
737 "R_ARM_THM_MOVT_ABS", /* name */
738 FALSE, /* partial_inplace */
739 0x040f70ff, /* src_mask */
740 0x040f70ff, /* dst_mask */
741 FALSE), /* pcrel_offset */
742
743 HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */
744 0, /* rightshift */
745 2, /* size (0 = byte, 1 = short, 2 = long) */
746 16, /* bitsize */
747 TRUE, /* pc_relative */
748 0, /* bitpos */
749 complain_overflow_dont,/* complain_on_overflow */
750 bfd_elf_generic_reloc, /* special_function */
751 "R_ARM_THM_MOVW_PREL_NC",/* name */
752 FALSE, /* partial_inplace */
753 0x040f70ff, /* src_mask */
754 0x040f70ff, /* dst_mask */
755 TRUE), /* pcrel_offset */
756
757 HOWTO (R_ARM_THM_MOVT_PREL, /* type */
758 0, /* rightshift */
759 2, /* size (0 = byte, 1 = short, 2 = long) */
760 16, /* bitsize */
761 TRUE, /* pc_relative */
762 0, /* bitpos */
763 complain_overflow_bitfield,/* complain_on_overflow */
764 bfd_elf_generic_reloc, /* special_function */
765 "R_ARM_THM_MOVT_PREL", /* name */
766 FALSE, /* partial_inplace */
767 0x040f70ff, /* src_mask */
768 0x040f70ff, /* dst_mask */
769 TRUE), /* pcrel_offset */
770
771 HOWTO (R_ARM_THM_JUMP19, /* type */
772 1, /* rightshift */
773 2, /* size (0 = byte, 1 = short, 2 = long) */
774 19, /* bitsize */
775 TRUE, /* pc_relative */
776 0, /* bitpos */
777 complain_overflow_signed,/* complain_on_overflow */
778 bfd_elf_generic_reloc, /* special_function */
779 "R_ARM_THM_JUMP19", /* name */
780 FALSE, /* partial_inplace */
781 0x043f2fff, /* src_mask */
782 0x043f2fff, /* dst_mask */
783 TRUE), /* pcrel_offset */
784
785 HOWTO (R_ARM_THM_JUMP6, /* type */
786 1, /* rightshift */
787 1, /* size (0 = byte, 1 = short, 2 = long) */
788 6, /* bitsize */
789 TRUE, /* pc_relative */
790 0, /* bitpos */
791 complain_overflow_unsigned,/* complain_on_overflow */
792 bfd_elf_generic_reloc, /* special_function */
793 "R_ARM_THM_JUMP6", /* name */
794 FALSE, /* partial_inplace */
795 0x02f8, /* src_mask */
796 0x02f8, /* dst_mask */
797 TRUE), /* pcrel_offset */
798
799 /* These are declared as 13-bit signed relocations because we can
800 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
801 versa. */
802 HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */
803 0, /* rightshift */
804 2, /* size (0 = byte, 1 = short, 2 = long) */
805 13, /* bitsize */
806 TRUE, /* pc_relative */
807 0, /* bitpos */
808 complain_overflow_signed,/* complain_on_overflow */
809 bfd_elf_generic_reloc, /* special_function */
810 "R_ARM_THM_ALU_PREL_11_0",/* name */
811 FALSE, /* partial_inplace */
812 0x040070ff, /* src_mask */
813 0x040070ff, /* dst_mask */
814 TRUE), /* pcrel_offset */
815
816 HOWTO (R_ARM_THM_PC12, /* type */
817 0, /* rightshift */
818 2, /* size (0 = byte, 1 = short, 2 = long) */
819 13, /* bitsize */
820 TRUE, /* pc_relative */
821 0, /* bitpos */
822 complain_overflow_signed,/* complain_on_overflow */
823 bfd_elf_generic_reloc, /* special_function */
824 "R_ARM_THM_PC12", /* name */
825 FALSE, /* partial_inplace */
826 0x040070ff, /* src_mask */
827 0x040070ff, /* dst_mask */
828 TRUE), /* pcrel_offset */
829
830 HOWTO (R_ARM_ABS32_NOI, /* type */
831 0, /* rightshift */
832 2, /* size (0 = byte, 1 = short, 2 = long) */
833 32, /* bitsize */
834 FALSE, /* pc_relative */
835 0, /* bitpos */
836 complain_overflow_dont,/* complain_on_overflow */
837 bfd_elf_generic_reloc, /* special_function */
838 "R_ARM_ABS32_NOI", /* name */
839 FALSE, /* partial_inplace */
840 0xffffffff, /* src_mask */
841 0xffffffff, /* dst_mask */
842 FALSE), /* pcrel_offset */
843
844 HOWTO (R_ARM_REL32_NOI, /* type */
845 0, /* rightshift */
846 2, /* size (0 = byte, 1 = short, 2 = long) */
847 32, /* bitsize */
848 TRUE, /* pc_relative */
849 0, /* bitpos */
850 complain_overflow_dont,/* complain_on_overflow */
851 bfd_elf_generic_reloc, /* special_function */
852 "R_ARM_REL32_NOI", /* name */
853 FALSE, /* partial_inplace */
854 0xffffffff, /* src_mask */
855 0xffffffff, /* dst_mask */
856 FALSE), /* pcrel_offset */
7f266840
DJ		 857};
858
c19d1205
ZW		 859/* Relocations 57 .. 83 are the "group relocations" which we do not
860 support. */
861
862static reloc_howto_type elf32_arm_howto_table_2[] =
863{
864 HOWTO (R_ARM_MOVW_BREL_NC, /* type */
865 0, /* rightshift */
866 2, /* size (0 = byte, 1 = short, 2 = long) */
867 16, /* bitsize */
868 FALSE, /* pc_relative */
869 0, /* bitpos */
870 complain_overflow_dont,/* complain_on_overflow */
871 bfd_elf_generic_reloc, /* special_function */
872 "R_ARM_MOVW_BREL_NC", /* name */
873 FALSE, /* partial_inplace */
874 0x0000ffff, /* src_mask */
875 0x0000ffff, /* dst_mask */
876 FALSE), /* pcrel_offset */
877
878 HOWTO (R_ARM_MOVT_BREL, /* type */
879 0, /* rightshift */
880 2, /* size (0 = byte, 1 = short, 2 = long) */
881 16, /* bitsize */
882 FALSE, /* pc_relative */
883 0, /* bitpos */
884 complain_overflow_bitfield,/* complain_on_overflow */
885 bfd_elf_generic_reloc, /* special_function */
886 "R_ARM_MOVT_BREL", /* name */
887 FALSE, /* partial_inplace */
888 0x0000ffff, /* src_mask */
889 0x0000ffff, /* dst_mask */
890 FALSE), /* pcrel_offset */
891
892 HOWTO (R_ARM_MOVW_BREL, /* type */
893 0, /* rightshift */
894 2, /* size (0 = byte, 1 = short, 2 = long) */
895 16, /* bitsize */
896 FALSE, /* pc_relative */
897 0, /* bitpos */
898 complain_overflow_dont,/* complain_on_overflow */
899 bfd_elf_generic_reloc, /* special_function */
900 "R_ARM_MOVW_BREL", /* name */
901 FALSE, /* partial_inplace */
902 0x0000ffff, /* src_mask */
903 0x0000ffff, /* dst_mask */
904 FALSE), /* pcrel_offset */
905
906 HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */
907 0, /* rightshift */
908 2, /* size (0 = byte, 1 = short, 2 = long) */
909 16, /* bitsize */
910 FALSE, /* pc_relative */
911 0, /* bitpos */
912 complain_overflow_dont,/* complain_on_overflow */
913 bfd_elf_generic_reloc, /* special_function */
914 "R_ARM_THM_MOVW_BREL_NC",/* name */
915 FALSE, /* partial_inplace */
916 0x040f70ff, /* src_mask */
917 0x040f70ff, /* dst_mask */
918 FALSE), /* pcrel_offset */
919
920 HOWTO (R_ARM_THM_MOVT_BREL, /* type */
921 0, /* rightshift */
922 2, /* size (0 = byte, 1 = short, 2 = long) */
923 16, /* bitsize */
924 FALSE, /* pc_relative */
925 0, /* bitpos */
926 complain_overflow_bitfield,/* complain_on_overflow */
927 bfd_elf_generic_reloc, /* special_function */
928 "R_ARM_THM_MOVT_BREL", /* name */
929 FALSE, /* partial_inplace */
930 0x040f70ff, /* src_mask */
931 0x040f70ff, /* dst_mask */
932 FALSE), /* pcrel_offset */
933
934 HOWTO (R_ARM_THM_MOVW_BREL, /* type */
935 0, /* rightshift */
936 2, /* size (0 = byte, 1 = short, 2 = long) */
937 16, /* bitsize */
938 FALSE, /* pc_relative */
939 0, /* bitpos */
940 complain_overflow_dont,/* complain_on_overflow */
941 bfd_elf_generic_reloc, /* special_function */
942 "R_ARM_THM_MOVW_BREL", /* name */
943 FALSE, /* partial_inplace */
944 0x040f70ff, /* src_mask */
945 0x040f70ff, /* dst_mask */
946 FALSE), /* pcrel_offset */
947
948 EMPTY_HOWTO (90), /* unallocated */
949 EMPTY_HOWTO (91),
950 EMPTY_HOWTO (92),
951 EMPTY_HOWTO (93),
952
953 HOWTO (R_ARM_PLT32_ABS, /* type */
954 0, /* rightshift */
955 2, /* size (0 = byte, 1 = short, 2 = long) */
956 32, /* bitsize */
957 FALSE, /* pc_relative */
958 0, /* bitpos */
959 complain_overflow_dont,/* complain_on_overflow */
960 bfd_elf_generic_reloc, /* special_function */
961 "R_ARM_PLT32_ABS", /* name */
962 FALSE, /* partial_inplace */
963 0xffffffff, /* src_mask */
964 0xffffffff, /* dst_mask */
965 FALSE), /* pcrel_offset */
966
967 HOWTO (R_ARM_GOT_ABS, /* type */
968 0, /* rightshift */
969 2, /* size (0 = byte, 1 = short, 2 = long) */
970 32, /* bitsize */
971 FALSE, /* pc_relative */
972 0, /* bitpos */
973 complain_overflow_dont,/* complain_on_overflow */
974 bfd_elf_generic_reloc, /* special_function */
975 "R_ARM_GOT_ABS", /* name */
976 FALSE, /* partial_inplace */
977 0xffffffff, /* src_mask */
978 0xffffffff, /* dst_mask */
979 FALSE), /* pcrel_offset */
980
981 HOWTO (R_ARM_GOT_PREL, /* type */
982 0, /* rightshift */
983 2, /* size (0 = byte, 1 = short, 2 = long) */
984 32, /* bitsize */
985 TRUE, /* pc_relative */
986 0, /* bitpos */
987 complain_overflow_dont, /* complain_on_overflow */
988 bfd_elf_generic_reloc, /* special_function */
989 "R_ARM_GOT_PREL", /* name */
990 FALSE, /* partial_inplace */
991 0xffffffff, /* src_mask */
992 0xffffffff, /* dst_mask */
993 TRUE), /* pcrel_offset */
994
995 HOWTO (R_ARM_GOT_BREL12, /* type */
996 0, /* rightshift */
997 2, /* size (0 = byte, 1 = short, 2 = long) */
998 12, /* bitsize */
999 FALSE, /* pc_relative */
1000 0, /* bitpos */
1001 complain_overflow_bitfield,/* complain_on_overflow */
1002 bfd_elf_generic_reloc, /* special_function */
1003 "R_ARM_GOT_BREL12", /* name */
1004 FALSE, /* partial_inplace */
1005 0x00000fff, /* src_mask */
1006 0x00000fff, /* dst_mask */
1007 FALSE), /* pcrel_offset */
1008
1009 HOWTO (R_ARM_GOTOFF12, /* type */
1010 0, /* rightshift */
1011 2, /* size (0 = byte, 1 = short, 2 = long) */
1012 12, /* bitsize */
1013 FALSE, /* pc_relative */
1014 0, /* bitpos */
1015 complain_overflow_bitfield,/* complain_on_overflow */
1016 bfd_elf_generic_reloc, /* special_function */
1017 "R_ARM_GOTOFF12", /* name */
1018 FALSE, /* partial_inplace */
1019 0x00000fff, /* src_mask */
1020 0x00000fff, /* dst_mask */
1021 FALSE), /* pcrel_offset */
1022
1023 EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */
1024
1025 /* GNU extension to record C++ vtable member usage */
1026 HOWTO (R_ARM_GNU_VTENTRY, /* type */
ba93b8ac
DJ		 1027 0, /* rightshift */
1028 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205 1029 0, /* bitsize */
ba93b8ac
DJ		 1030 FALSE, /* pc_relative */
1031 0, /* bitpos */
c19d1205
ZW		 1032 complain_overflow_dont, /* complain_on_overflow */
1033 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1034 "R_ARM_GNU_VTENTRY", /* name */
1035 FALSE, /* partial_inplace */
1036 0, /* src_mask */
1037 0, /* dst_mask */
1038 FALSE), /* pcrel_offset */
1039
1040 /* GNU extension to record C++ vtable hierarchy */
1041 HOWTO (R_ARM_GNU_VTINHERIT, /* type */
1042 0, /* rightshift */
1043 2, /* size (0 = byte, 1 = short, 2 = long) */
1044 0, /* bitsize */
1045 FALSE, /* pc_relative */
1046 0, /* bitpos */
1047 complain_overflow_dont, /* complain_on_overflow */
1048 NULL, /* special_function */
1049 "R_ARM_GNU_VTINHERIT", /* name */
1050 FALSE, /* partial_inplace */
1051 0, /* src_mask */
1052 0, /* dst_mask */
1053 FALSE), /* pcrel_offset */
1054
1055 HOWTO (R_ARM_THM_JUMP11, /* type */
1056 1, /* rightshift */
1057 1, /* size (0 = byte, 1 = short, 2 = long) */
1058 11, /* bitsize */
1059 TRUE, /* pc_relative */
1060 0, /* bitpos */
1061 complain_overflow_signed, /* complain_on_overflow */
1062 bfd_elf_generic_reloc, /* special_function */
1063 "R_ARM_THM_JUMP11", /* name */
1064 FALSE, /* partial_inplace */
1065 0x000007ff, /* src_mask */
1066 0x000007ff, /* dst_mask */
1067 TRUE), /* pcrel_offset */
1068
1069 HOWTO (R_ARM_THM_JUMP8, /* type */
1070 1, /* rightshift */
1071 1, /* size (0 = byte, 1 = short, 2 = long) */
1072 8, /* bitsize */
1073 TRUE, /* pc_relative */
1074 0, /* bitpos */
1075 complain_overflow_signed, /* complain_on_overflow */
1076 bfd_elf_generic_reloc, /* special_function */
1077 "R_ARM_THM_JUMP8", /* name */
1078 FALSE, /* partial_inplace */
1079 0x000000ff, /* src_mask */
1080 0x000000ff, /* dst_mask */
1081 TRUE), /* pcrel_offset */
ba93b8ac 1082
c19d1205
ZW		 1083 /* TLS relocations */
1084 HOWTO (R_ARM_TLS_GD32, /* type */
ba93b8ac
DJ		 1085 0, /* rightshift */
1086 2, /* size (0 = byte, 1 = short, 2 = long) */
1087 32, /* bitsize */
1088 FALSE, /* pc_relative */
1089 0, /* bitpos */
1090 complain_overflow_bitfield,/* complain_on_overflow */
c19d1205
ZW		 1091 NULL, /* special_function */
1092 "R_ARM_TLS_GD32", /* name */
ba93b8ac
DJ		 1093 TRUE, /* partial_inplace */
1094 0xffffffff, /* src_mask */
1095 0xffffffff, /* dst_mask */
c19d1205 1096 FALSE), /* pcrel_offset */
ba93b8ac 1097
ba93b8ac
DJ		 1098 HOWTO (R_ARM_TLS_LDM32, /* type */
1099 0, /* rightshift */
1100 2, /* size (0 = byte, 1 = short, 2 = long) */
1101 32, /* bitsize */
1102 FALSE, /* pc_relative */
1103 0, /* bitpos */
1104 complain_overflow_bitfield,/* complain_on_overflow */
1105 bfd_elf_generic_reloc, /* special_function */
1106 "R_ARM_TLS_LDM32", /* name */
1107 TRUE, /* partial_inplace */
1108 0xffffffff, /* src_mask */
1109 0xffffffff, /* dst_mask */
c19d1205 1110 FALSE), /* pcrel_offset */
ba93b8ac 1111
c19d1205 1112 HOWTO (R_ARM_TLS_LDO32, /* type */
ba93b8ac
DJ		 1113 0, /* rightshift */
1114 2, /* size (0 = byte, 1 = short, 2 = long) */
1115 32, /* bitsize */
1116 FALSE, /* pc_relative */
1117 0, /* bitpos */
1118 complain_overflow_bitfield,/* complain_on_overflow */
1119 bfd_elf_generic_reloc, /* special_function */
c19d1205 1120 "R_ARM_TLS_LDO32", /* name */
ba93b8ac
DJ		 1121 TRUE, /* partial_inplace */
1122 0xffffffff, /* src_mask */
1123 0xffffffff, /* dst_mask */
c19d1205 1124 FALSE), /* pcrel_offset */
ba93b8ac 1125
ba93b8ac
DJ		 1126 HOWTO (R_ARM_TLS_IE32, /* type */
1127 0, /* rightshift */
1128 2, /* size (0 = byte, 1 = short, 2 = long) */
1129 32, /* bitsize */
1130 FALSE, /* pc_relative */
1131 0, /* bitpos */
1132 complain_overflow_bitfield,/* complain_on_overflow */
1133 NULL, /* special_function */
1134 "R_ARM_TLS_IE32", /* name */
1135 TRUE, /* partial_inplace */
1136 0xffffffff, /* src_mask */
1137 0xffffffff, /* dst_mask */
c19d1205 1138 FALSE), /* pcrel_offset */
7f266840 1139
c19d1205 1140 HOWTO (R_ARM_TLS_LE32, /* type */
7f266840
DJ		 1141 0, /* rightshift */
1142 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205 1143 32, /* bitsize */
7f266840
DJ		 1144 FALSE, /* pc_relative */
1145 0, /* bitpos */
c19d1205
ZW		 1146 complain_overflow_bitfield,/* complain_on_overflow */
1147 bfd_elf_generic_reloc, /* special_function */
1148 "R_ARM_TLS_LE32", /* name */
1149 TRUE, /* partial_inplace */
1150 0xffffffff, /* src_mask */
1151 0xffffffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
7f266840 1153
c19d1205
ZW		 1154 HOWTO (R_ARM_TLS_LDO12, /* type */
1155 0, /* rightshift */
1156 2, /* size (0 = byte, 1 = short, 2 = long) */
1157 12, /* bitsize */
1158 FALSE, /* pc_relative */
7f266840 1159 0, /* bitpos */
c19d1205 1160 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1161 bfd_elf_generic_reloc, /* special_function */
c19d1205 1162 "R_ARM_TLS_LDO12", /* name */
7f266840 1163 FALSE, /* partial_inplace */
c19d1205
ZW		 1164 0x00000fff, /* src_mask */
1165 0x00000fff, /* dst_mask */
1166 FALSE), /* pcrel_offset */
7f266840 1167
c19d1205
ZW		 1168 HOWTO (R_ARM_TLS_LE12, /* type */
1169 0, /* rightshift */
1170 2, /* size (0 = byte, 1 = short, 2 = long) */
1171 12, /* bitsize */
1172 FALSE, /* pc_relative */
7f266840 1173 0, /* bitpos */
c19d1205 1174 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1175 bfd_elf_generic_reloc, /* special_function */
c19d1205 1176 "R_ARM_TLS_LE12", /* name */
7f266840 1177 FALSE, /* partial_inplace */
c19d1205
ZW		 1178 0x00000fff, /* src_mask */
1179 0x00000fff, /* dst_mask */
1180 FALSE), /* pcrel_offset */
7f266840 1181
c19d1205 1182 HOWTO (R_ARM_TLS_IE12GP, /* type */
7f266840
DJ		 1183 0, /* rightshift */
1184 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205
ZW		 1185 12, /* bitsize */
1186 FALSE, /* pc_relative */
7f266840 1187 0, /* bitpos */
c19d1205 1188 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1189 bfd_elf_generic_reloc, /* special_function */
c19d1205 1190 "R_ARM_TLS_IE12GP", /* name */
7f266840 1191 FALSE, /* partial_inplace */
c19d1205
ZW		 1192 0x00000fff, /* src_mask */
1193 0x00000fff, /* dst_mask */
1194 FALSE), /* pcrel_offset */
1195};
1196
1197/* 112-127 private relocations
1198 128 R_ARM_ME_TOO, obsolete
1199 129-255 unallocated in AAELF.
7f266840 1200
c19d1205
ZW		 1201 249-255 extended, currently unused, relocations: */
1202
1203static reloc_howto_type elf32_arm_howto_table_3[4] =
7f266840
DJ		 1204{
1205 HOWTO (R_ARM_RREL32, /* type */
1206 0, /* rightshift */
1207 0, /* size (0 = byte, 1 = short, 2 = long) */
1208 0, /* bitsize */
1209 FALSE, /* pc_relative */
1210 0, /* bitpos */
1211 complain_overflow_dont,/* complain_on_overflow */
1212 bfd_elf_generic_reloc, /* special_function */
1213 "R_ARM_RREL32", /* name */
1214 FALSE, /* partial_inplace */
1215 0, /* src_mask */
1216 0, /* dst_mask */
1217 FALSE), /* pcrel_offset */
1218
1219 HOWTO (R_ARM_RABS32, /* type */
1220 0, /* rightshift */
1221 0, /* size (0 = byte, 1 = short, 2 = long) */
1222 0, /* bitsize */
1223 FALSE, /* pc_relative */
1224 0, /* bitpos */
1225 complain_overflow_dont,/* complain_on_overflow */
1226 bfd_elf_generic_reloc, /* special_function */
1227 "R_ARM_RABS32", /* name */
1228 FALSE, /* partial_inplace */
1229 0, /* src_mask */
1230 0, /* dst_mask */
1231 FALSE), /* pcrel_offset */
1232
1233 HOWTO (R_ARM_RPC24, /* type */
1234 0, /* rightshift */
1235 0, /* size (0 = byte, 1 = short, 2 = long) */
1236 0, /* bitsize */
1237 FALSE, /* pc_relative */
1238 0, /* bitpos */
1239 complain_overflow_dont,/* complain_on_overflow */
1240 bfd_elf_generic_reloc, /* special_function */
1241 "R_ARM_RPC24", /* name */
1242 FALSE, /* partial_inplace */
1243 0, /* src_mask */
1244 0, /* dst_mask */
1245 FALSE), /* pcrel_offset */
1246
1247 HOWTO (R_ARM_RBASE, /* type */
1248 0, /* rightshift */
1249 0, /* size (0 = byte, 1 = short, 2 = long) */
1250 0, /* bitsize */
1251 FALSE, /* pc_relative */
1252 0, /* bitpos */
1253 complain_overflow_dont,/* complain_on_overflow */
1254 bfd_elf_generic_reloc, /* special_function */
1255 "R_ARM_RBASE", /* name */
1256 FALSE, /* partial_inplace */
1257 0, /* src_mask */
1258 0, /* dst_mask */
1259 FALSE) /* pcrel_offset */
1260};
1261
1262static reloc_howto_type *
1263elf32_arm_howto_from_type (unsigned int r_type)
1264{
c19d1205
ZW		 1265 if (r_type < NUM_ELEM (elf32_arm_howto_table_1))
1266 return &elf32_arm_howto_table_1[r_type];
ba93b8ac 1267
c19d1205
ZW		 1268 if (r_type >= R_ARM_MOVW_BREL_NC
1269 && r_type < R_ARM_MOVW_BREL_NC + NUM_ELEM (elf32_arm_howto_table_2))
1270 return &elf32_arm_howto_table_2[r_type - R_ARM_MOVW_BREL_NC];
7f266840 1271
c19d1205
ZW		 1272 if (r_type >= R_ARM_RREL32
1273 && r_type < R_ARM_RREL32 + NUM_ELEM (elf32_arm_howto_table_2))
1274 return &elf32_arm_howto_table_3[r_type - R_ARM_RREL32];
7f266840 1275
c19d1205 1276 return NULL;
7f266840
DJ		 1277}
1278
1279static void
1280elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
1281 Elf_Internal_Rela * elf_reloc)
1282{
1283 unsigned int r_type;
1284
1285 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1286 bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
1287}
1288
1289struct elf32_arm_reloc_map
1290 {
1291 bfd_reloc_code_real_type bfd_reloc_val;
1292 unsigned char elf_reloc_val;
1293 };
1294
1295/* All entries in this list must also be present in elf32_arm_howto_table. */
1296static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
1297 {
1298 {BFD_RELOC_NONE, R_ARM_NONE},
1299 {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
1300 {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
1301 {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
1302 {BFD_RELOC_32, R_ARM_ABS32},
1303 {BFD_RELOC_32_PCREL, R_ARM_REL32},
1304 {BFD_RELOC_8, R_ARM_ABS8},
1305 {BFD_RELOC_16, R_ARM_ABS16},
1306 {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
1307 {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
c19d1205
ZW		 1308 {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24},
1309 {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL},
1310 {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11},
1311 {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19},
1312 {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8},
1313 {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6},
7f266840
DJ		 1314 {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
1315 {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
1316 {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
c19d1205 1317 {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32},
7f266840
DJ		 1318 {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
1319 {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
1320 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1321 {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1},
1322 {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32},
1323 {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32},
1324 {BFD_RELOC_ARM_PREL31, R_ARM_PREL31},
ba93b8ac
DJ		 1325 {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2},
1326 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1327 {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32},
1328 {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32},
1329 {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32},
1330 {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32},
1331 {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32},
1332 {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32},
1333 {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32},
1334 {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32},
c19d1205
ZW		 1335 {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT},
1336 {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY},
7f266840
DJ		 1337 };
1338
1339static reloc_howto_type *
f1c71a59
ZW		 1340elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1341 bfd_reloc_code_real_type code)
7f266840
DJ		 1342{
1343 unsigned int i;
c19d1205
ZW		 1344 for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
1345 if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
1346 return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
7f266840 1347
c19d1205 1348 return NULL;
7f266840
DJ		 1349}
1350
1351/* Support for core dump NOTE sections */
1352static bfd_boolean
f1c71a59 1353elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
7f266840
DJ		 1354{
1355 int offset;
1356 size_t size;
1357
1358 switch (note->descsz)
1359 {
1360 default:
1361 return FALSE;
1362
1363 case 148: /* Linux/ARM 32-bit*/
1364 /* pr_cursig */
1365 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1366
1367 /* pr_pid */
1368 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1369
1370 /* pr_reg */
1371 offset = 72;
1372 size = 72;
1373
1374 break;
1375 }
1376
1377 /* Make a ".reg/999" section. */
1378 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1379 size, note->descpos + offset);
1380}
1381
1382static bfd_boolean
f1c71a59 1383elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
7f266840
DJ		 1384{
1385 switch (note->descsz)
1386 {
1387 default:
1388 return FALSE;
1389
1390 case 124: /* Linux/ARM elf_prpsinfo */
1391 elf_tdata (abfd)->core_program
1392 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1393 elf_tdata (abfd)->core_command
1394 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1395 }
1396
1397 /* Note that for some reason, a spurious space is tacked
1398 onto the end of the args in some (at least one anyway)
1399 implementations, so strip it off if it exists. */
1400
1401 {
1402 char *command = elf_tdata (abfd)->core_command;
1403 int n = strlen (command);
1404
1405 if (0 < n && command[n - 1] == ' ')
1406 command[n - 1] = '\0';
1407 }
1408
1409 return TRUE;
1410}
1411
1412#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1413#define TARGET_LITTLE_NAME "elf32-littlearm"
1414#define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1415#define TARGET_BIG_NAME "elf32-bigarm"
1416
1417#define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1418#define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1419
252b5132
RH		 1420typedef unsigned long int insn32;
1421typedef unsigned short int insn16;
1422
8cb51566 1423/* In lieu of proper flags, assume all EABIv4 objects are interworkable. */
57e8b36a 1424#define INTERWORK_FLAG(abfd) \
8cb51566 1425 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) == EF_ARM_EABI_VER4 \
85a84e7a 1426 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
9b485d32 1427
252b5132
RH		 1428/* The linker script knows the section names for placement.
1429 The entry_names are used to do simple name mangling on the stubs.
1430 Given a function name, and its type, the stub can be found. The
9b485d32 1431 name can be changed. The only requirement is the %s be present. */
252b5132
RH		 1432#define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1433#define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1434
1435#define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1436#define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1437
1438/* The name of the dynamic interpreter. This is put in the .interp
1439 section. */
1440#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1441
5e681ec4
PB		 1442#ifdef FOUR_WORD_PLT
1443
252b5132
RH		 1444/* The first entry in a procedure linkage table looks like
1445 this. It is set up so that any shared library function that is
59f2c4e7 1446 called before the relocation has been set up calls the dynamic
9b485d32 1447 linker first. */
e5a52504 1448static const bfd_vma elf32_arm_plt0_entry [] =
5e681ec4
PB		 1449 {
1450 0xe52de004, /* str lr, [sp, #-4]! */
1451 0xe59fe010, /* ldr lr, [pc, #16] */
1452 0xe08fe00e, /* add lr, pc, lr */
1453 0xe5bef008, /* ldr pc, [lr, #8]! */
1454 };
1455
1456/* Subsequent entries in a procedure linkage table look like
1457 this. */
e5a52504 1458static const bfd_vma elf32_arm_plt_entry [] =
5e681ec4
PB		 1459 {
1460 0xe28fc600, /* add ip, pc, #NN */
1461 0xe28cca00, /* add ip, ip, #NN */
1462 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1463 0x00000000, /* unused */
1464 };
1465
1466#else
1467
5e681ec4
PB		 1468/* The first entry in a procedure linkage table looks like
1469 this. It is set up so that any shared library function that is
1470 called before the relocation has been set up calls the dynamic
1471 linker first. */
e5a52504 1472static const bfd_vma elf32_arm_plt0_entry [] =
917583ad 1473 {
5e681ec4
PB		 1474 0xe52de004, /* str lr, [sp, #-4]! */
1475 0xe59fe004, /* ldr lr, [pc, #4] */
1476 0xe08fe00e, /* add lr, pc, lr */
1477 0xe5bef008, /* ldr pc, [lr, #8]! */
1478 0x00000000, /* &GOT[0] - . */
917583ad 1479 };
252b5132
RH		 1480
1481/* Subsequent entries in a procedure linkage table look like
1482 this. */
e5a52504 1483static const bfd_vma elf32_arm_plt_entry [] =
5e681ec4
PB		 1484 {
1485 0xe28fc600, /* add ip, pc, #0xNN00000 */
1486 0xe28cca00, /* add ip, ip, #0xNN000 */
1487 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1488 };
1489
1490#endif
252b5132 1491
b7693d02
DJ		 1492/* An initial stub used if the PLT entry is referenced from Thumb code. */
1493#define PLT_THUMB_STUB_SIZE 4
1494static const bfd_vma elf32_arm_plt_thumb_stub [] =
1495 {
1496 0x4778, /* bx pc */
1497 0x46c0 /* nop */
1498 };
1499
e5a52504
MM		 1500/* The entries in a PLT when using a DLL-based target with multiple
1501 address spaces. */
1502static const bfd_vma elf32_arm_symbian_plt_entry [] =
1503 {
83a358aa 1504 0xe51ff004, /* ldr pc, [pc, #-4] */
e5a52504
MM		 1505 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
1506 };
1507
e489d0ae
PB		 1508/* Used to build a map of a section. This is required for mixed-endian
1509 code/data. */
1510
1511typedef struct elf32_elf_section_map
1512{
1513 bfd_vma vma;
1514 char type;
1515}
1516elf32_arm_section_map;
1517
8e3de13a 1518typedef struct _arm_elf_section_data
e489d0ae
PB		 1519{
1520 struct bfd_elf_section_data elf;
8e3de13a 1521 unsigned int mapcount;
e489d0ae 1522 elf32_arm_section_map *map;
8e3de13a
NC		 1523}
1524_arm_elf_section_data;
e489d0ae
PB		 1525
1526#define elf32_arm_section_data(sec) \
8e3de13a 1527 ((_arm_elf_section_data *) elf_section_data (sec))
e489d0ae 1528
ba93b8ac
DJ		 1529/* The size of the thread control block. */
1530#define TCB_SIZE 8
1531
1532struct elf32_arm_obj_tdata
1533{
1534 struct elf_obj_tdata root;
1535
1536 /* tls_type for each local got entry. */
1537 char *local_got_tls_type;
1538};
1539
1540#define elf32_arm_tdata(abfd) \
1541 ((struct elf32_arm_obj_tdata *) (abfd)->tdata.any)
1542
1543#define elf32_arm_local_got_tls_type(abfd) \
1544 (elf32_arm_tdata (abfd)->local_got_tls_type)
1545
1546static bfd_boolean
1547elf32_arm_mkobject (bfd *abfd)
1548{
1549 bfd_size_type amt = sizeof (struct elf32_arm_obj_tdata);
1550 abfd->tdata.any = bfd_zalloc (abfd, amt);
1551 if (abfd->tdata.any == NULL)
1552 return FALSE;
1553 return TRUE;
1554}
1555
252b5132
RH		 1556/* The ARM linker needs to keep track of the number of relocs that it
1557 decides to copy in check_relocs for each symbol. This is so that
1558 it can discard PC relative relocs if it doesn't need them when
1559 linking with -Bsymbolic. We store the information in a field
1560 extending the regular ELF linker hash table. */
1561
ba93b8ac
DJ		 1562/* This structure keeps track of the number of relocs we have copied
1563 for a given symbol. */
5e681ec4 1564struct elf32_arm_relocs_copied
917583ad
NC		 1565 {
1566 /* Next section. */
5e681ec4 1567 struct elf32_arm_relocs_copied * next;
917583ad
NC		 1568 /* A section in dynobj. */
1569 asection * section;
1570 /* Number of relocs copied in this section. */
1571 bfd_size_type count;
ba93b8ac
DJ		 1572 /* Number of PC-relative relocs copied in this section. */
1573 bfd_size_type pc_count;
917583ad 1574 };
252b5132 1575
ba93b8ac
DJ		 1576#define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
1577
ba96a88f 1578/* Arm ELF linker hash entry. */
252b5132 1579struct elf32_arm_link_hash_entry
917583ad
NC		 1580 {
1581 struct elf_link_hash_entry root;
252b5132 1582
917583ad 1583 /* Number of PC relative relocs copied for this symbol. */
5e681ec4 1584 struct elf32_arm_relocs_copied * relocs_copied;
b7693d02
DJ		 1585
1586 /* We reference count Thumb references to a PLT entry separately,
1587 so that we can emit the Thumb trampoline only if needed. */
1588 bfd_signed_vma plt_thumb_refcount;
1589
1590 /* Since PLT entries have variable size if the Thumb prologue is
1591 used, we need to record the index into .got.plt instead of
1592 recomputing it from the PLT offset. */
1593 bfd_signed_vma plt_got_offset;
ba93b8ac
DJ		 1594
1595#define GOT_UNKNOWN 0
1596#define GOT_NORMAL 1
1597#define GOT_TLS_GD 2
1598#define GOT_TLS_IE 4
1599 unsigned char tls_type;
917583ad 1600 };
252b5132 1601
252b5132 1602/* Traverse an arm ELF linker hash table. */
252b5132
RH		 1603#define elf32_arm_link_hash_traverse(table, func, info) \
1604 (elf_link_hash_traverse \
1605 (&(table)->root, \
b7693d02 1606 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
252b5132
RH		 1607 (info)))
1608
1609/* Get the ARM elf linker hash table from a link_info structure. */
1610#define elf32_arm_hash_table(info) \
1611 ((struct elf32_arm_link_hash_table *) ((info)->hash))
1612
9b485d32 1613/* ARM ELF linker hash table. */
252b5132 1614struct elf32_arm_link_hash_table
917583ad
NC		 1615 {
1616 /* The main hash table. */
1617 struct elf_link_hash_table root;
252b5132 1618
4cc11e76 1619 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
dc810e39 1620 bfd_size_type thumb_glue_size;
252b5132 1621
4cc11e76 1622 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
dc810e39 1623 bfd_size_type arm_glue_size;
252b5132 1624
4cc11e76 1625 /* An arbitrary input BFD chosen to hold the glue sections. */
917583ad 1626 bfd * bfd_of_glue_owner;
ba96a88f 1627
e489d0ae
PB		 1628 /* Nonzero to output a BE8 image. */
1629 int byteswap_code;
1630
9c504268
PB		 1631 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
1632 Nonzero if R_ARM_TARGET1 means R_ARM_ABS32. */
1633 int target1_is_rel;
1634
eb043451
PB		 1635 /* The relocation to use for R_ARM_TARGET2 relocations. */
1636 int target2_reloc;
1637
319850b4
JB		 1638 /* Nonzero to fix BX instructions for ARMv4 targets. */
1639 int fix_v4bx;
1640
33bfe774
JB		 1641 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
1642 int use_blx;
1643
e5a52504
MM		 1644 /* The number of bytes in the initial entry in the PLT. */
1645 bfd_size_type plt_header_size;
1646
1647 /* The number of bytes in the subsequent PLT etries. */
1648 bfd_size_type plt_entry_size;
1649
1650 /* True if the target system is Symbian OS. */
1651 int symbian_p;
1652
4e7fd91e
PB		 1653 /* True if the target uses REL relocations. */
1654 int use_rel;
1655
5e681ec4
PB		 1656 /* Short-cuts to get to dynamic linker sections. */
1657 asection *sgot;
1658 asection *sgotplt;
1659 asection *srelgot;
1660 asection *splt;
1661 asection *srelplt;
1662 asection *sdynbss;
1663 asection *srelbss;
1664
ba93b8ac
DJ		 1665 /* Data for R_ARM_TLS_LDM32 relocations. */
1666 union {
1667 bfd_signed_vma refcount;
1668 bfd_vma offset;
1669 } tls_ldm_got;
1670
5e681ec4
PB		 1671 /* Small local sym to section mapping cache. */
1672 struct sym_sec_cache sym_sec;
b7693d02
DJ		 1673
1674 /* For convenience in allocate_dynrelocs. */
1675 bfd * obfd;
917583ad 1676 };
252b5132 1677
780a67af
NC		 1678/* Create an entry in an ARM ELF linker hash table. */
1679
1680static struct bfd_hash_entry *
57e8b36a
NC		 1681elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
1682 struct bfd_hash_table * table,
1683 const char * string)
780a67af
NC		 1684{
1685 struct elf32_arm_link_hash_entry * ret =
1686 (struct elf32_arm_link_hash_entry *) entry;
1687
1688 /* Allocate the structure if it has not already been allocated by a
1689 subclass. */
1690 if (ret == (struct elf32_arm_link_hash_entry *) NULL)
57e8b36a
NC		 1691 ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
1692 if (ret == NULL)
780a67af
NC		 1693 return (struct bfd_hash_entry *) ret;
1694
1695 /* Call the allocation method of the superclass. */
1696 ret = ((struct elf32_arm_link_hash_entry *)
1697 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1698 table, string));
57e8b36a 1699 if (ret != NULL)
b7693d02
DJ		 1700 {
1701 ret->relocs_copied = NULL;
ba93b8ac 1702 ret->tls_type = GOT_UNKNOWN;
b7693d02
DJ		 1703 ret->plt_thumb_refcount = 0;
1704 ret->plt_got_offset = -1;
1705 }
780a67af
NC		 1706
1707 return (struct bfd_hash_entry *) ret;
1708}
1709
5e681ec4
PB		 1710/* Create .got, .gotplt, and .rel.got sections in DYNOBJ, and set up
1711 shortcuts to them in our hash table. */
1712
1713static bfd_boolean
57e8b36a 1714create_got_section (bfd *dynobj, struct bfd_link_info *info)
5e681ec4
PB		 1715{
1716 struct elf32_arm_link_hash_table *htab;
1717
e5a52504
MM		 1718 htab = elf32_arm_hash_table (info);
1719 /* BPABI objects never have a GOT, or associated sections. */
1720 if (htab->symbian_p)
1721 return TRUE;
1722
5e681ec4
PB		 1723 if (! _bfd_elf_create_got_section (dynobj, info))
1724 return FALSE;
1725
5e681ec4
PB		 1726 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1727 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1728 if (!htab->sgot || !htab->sgotplt)
1729 abort ();
1730
3496cb2a
L		 1731 htab->srelgot = bfd_make_section_with_flags (dynobj, ".rel.got",
1732 (SEC_ALLOC | SEC_LOAD
1733 | SEC_HAS_CONTENTS
1734 | SEC_IN_MEMORY
1735 | SEC_LINKER_CREATED
1736 | SEC_READONLY));
5e681ec4 1737 if (htab->srelgot == NULL
5e681ec4
PB		 1738 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
1739 return FALSE;
1740 return TRUE;
1741}
1742
1743/* Create .plt, .rel.plt, .got, .got.plt, .rel.got, .dynbss, and
1744 .rel.bss sections in DYNOBJ, and set up shortcuts to them in our
1745 hash table. */
1746
1747static bfd_boolean
57e8b36a 1748elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5e681ec4
PB		 1749{
1750 struct elf32_arm_link_hash_table *htab;
1751
1752 htab = elf32_arm_hash_table (info);
1753 if (!htab->sgot && !create_got_section (dynobj, info))
1754 return FALSE;
1755
1756 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
1757 return FALSE;
1758
1759 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
1760 htab->srelplt = bfd_get_section_by_name (dynobj, ".rel.plt");
1761 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
1762 if (!info->shared)
1763 htab->srelbss = bfd_get_section_by_name (dynobj, ".rel.bss");
1764
e5a52504
MM		 1765 if (!htab->splt
1766 || !htab->srelplt
1767 || !htab->sdynbss
5e681ec4
PB		 1768 || (!info->shared && !htab->srelbss))
1769 abort ();
1770
1771 return TRUE;
1772}
1773
1774/* Copy the extra info we tack onto an elf_link_hash_entry. */
1775
1776static void
1777elf32_arm_copy_indirect_symbol (const struct elf_backend_data *bed,
1778 struct elf_link_hash_entry *dir,
1779 struct elf_link_hash_entry *ind)
1780{
1781 struct elf32_arm_link_hash_entry *edir, *eind;
1782
1783 edir = (struct elf32_arm_link_hash_entry *) dir;
1784 eind = (struct elf32_arm_link_hash_entry *) ind;
1785
1786 if (eind->relocs_copied != NULL)
1787 {
1788 if (edir->relocs_copied != NULL)
1789 {
1790 struct elf32_arm_relocs_copied **pp;
1791 struct elf32_arm_relocs_copied *p;
1792
1793 if (ind->root.type == bfd_link_hash_indirect)
1794 abort ();
1795
1796 /* Add reloc counts against the weak sym to the strong sym
1797 list. Merge any entries against the same section. */
1798 for (pp = &eind->relocs_copied; (p = *pp) != NULL; )
1799 {
1800 struct elf32_arm_relocs_copied *q;
1801
1802 for (q = edir->relocs_copied; q != NULL; q = q->next)
1803 if (q->section == p->section)
1804 {
ba93b8ac 1805 q->pc_count += p->pc_count;
5e681ec4
PB		 1806 q->count += p->count;
1807 *pp = p->next;
1808 break;
1809 }
1810 if (q == NULL)
1811 pp = &p->next;
1812 }
1813 *pp = edir->relocs_copied;
1814 }
1815
1816 edir->relocs_copied = eind->relocs_copied;
1817 eind->relocs_copied = NULL;
1818 }
1819
b7693d02
DJ		 1820 /* If the direct symbol already has an associated PLT entry, the
1821 indirect symbol should not. If it doesn't, swap refcount information
1822 from the indirect symbol. */
1823 if (edir->plt_thumb_refcount == 0)
1824 {
1825 edir->plt_thumb_refcount = eind->plt_thumb_refcount;
1826 eind->plt_thumb_refcount = 0;
1827 }
1828 else
1829 BFD_ASSERT (eind->plt_thumb_refcount == 0);
1830
ba93b8ac
DJ		 1831 if (ind->root.type == bfd_link_hash_indirect
1832 && dir->got.refcount <= 0)
1833 {
1834 edir->tls_type = eind->tls_type;
1835 eind->tls_type = GOT_UNKNOWN;
1836 }
1837
5e681ec4
PB		 1838 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
1839}
1840
9b485d32 1841/* Create an ARM elf linker hash table. */
252b5132
RH		 1842
1843static struct bfd_link_hash_table *
57e8b36a 1844elf32_arm_link_hash_table_create (bfd *abfd)
252b5132
RH		 1845{
1846 struct elf32_arm_link_hash_table *ret;
dc810e39 1847 bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
252b5132 1848
57e8b36a
NC		 1849 ret = bfd_malloc (amt);
1850 if (ret == NULL)
252b5132
RH		 1851 return NULL;
1852
57e8b36a 1853 if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
780a67af 1854 elf32_arm_link_hash_newfunc))
252b5132 1855 {
e2d34d7d 1856 free (ret);
252b5132
RH		 1857 return NULL;
1858 }
1859
5e681ec4
PB		 1860 ret->sgot = NULL;
1861 ret->sgotplt = NULL;
1862 ret->srelgot = NULL;
1863 ret->splt = NULL;
1864 ret->srelplt = NULL;
1865 ret->sdynbss = NULL;
1866 ret->srelbss = NULL;
252b5132
RH		 1867 ret->thumb_glue_size = 0;
1868 ret->arm_glue_size = 0;
1869 ret->bfd_of_glue_owner = NULL;
e489d0ae 1870 ret->byteswap_code = 0;
9c504268 1871 ret->target1_is_rel = 0;
eb043451 1872 ret->target2_reloc = R_ARM_NONE;
e5a52504
MM		 1873#ifdef FOUR_WORD_PLT
1874 ret->plt_header_size = 16;
1875 ret->plt_entry_size = 16;
1876#else
1877 ret->plt_header_size = 20;
1878 ret->plt_entry_size = 12;
1879#endif
33bfe774
JB		 1880 ret->fix_v4bx = 0;
1881 ret->use_blx = 0;
e5a52504 1882 ret->symbian_p = 0;
4e7fd91e 1883 ret->use_rel = 1;
5e681ec4 1884 ret->sym_sec.abfd = NULL;
b7693d02 1885 ret->obfd = abfd;
ba93b8ac 1886 ret->tls_ldm_got.refcount = 0;
252b5132
RH		 1887
1888 return &ret->root.root;
1889}
1890
9b485d32
NC		 1891/* Locate the Thumb encoded calling stub for NAME. */
1892
252b5132 1893static struct elf_link_hash_entry *
57e8b36a
NC		 1894find_thumb_glue (struct bfd_link_info *link_info,
1895 const char *name,
1896 bfd *input_bfd)
252b5132
RH		 1897{
1898 char *tmp_name;
1899 struct elf_link_hash_entry *hash;
1900 struct elf32_arm_link_hash_table *hash_table;
1901
1902 /* We need a pointer to the armelf specific hash table. */
1903 hash_table = elf32_arm_hash_table (link_info);
1904
57e8b36a
NC		 1905 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
1906 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 1907
1908 BFD_ASSERT (tmp_name);
1909
1910 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
1911
1912 hash = elf_link_hash_lookup
b34976b6 1913 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH		 1914
1915 if (hash == NULL)
1916 /* xgettext:c-format */
d003868e
AM		 1917 (*_bfd_error_handler) (_("%B: unable to find THUMB glue '%s' for `%s'"),
1918 input_bfd, tmp_name, name);
252b5132
RH		 1919
1920 free (tmp_name);
1921
1922 return hash;
1923}
1924
9b485d32
NC		 1925/* Locate the ARM encoded calling stub for NAME. */
1926
252b5132 1927static struct elf_link_hash_entry *
57e8b36a
NC		 1928find_arm_glue (struct bfd_link_info *link_info,
1929 const char *name,
1930 bfd *input_bfd)
252b5132
RH		 1931{
1932 char *tmp_name;
1933 struct elf_link_hash_entry *myh;
1934 struct elf32_arm_link_hash_table *hash_table;
1935
1936 /* We need a pointer to the elfarm specific hash table. */
1937 hash_table = elf32_arm_hash_table (link_info);
1938
57e8b36a
NC		 1939 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
1940 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 1941
1942 BFD_ASSERT (tmp_name);
1943
1944 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
1945
1946 myh = elf_link_hash_lookup
b34976b6 1947 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH		 1948
1949 if (myh == NULL)
1950 /* xgettext:c-format */
d003868e
AM		 1951 (*_bfd_error_handler) (_("%B: unable to find ARM glue '%s' for `%s'"),
1952 input_bfd, tmp_name, name);
252b5132
RH		 1953
1954 free (tmp_name);
1955
1956 return myh;
1957}
1958
8f6277f5 1959/* ARM->Thumb glue (static images):
252b5132
RH		 1960
1961 .arm
1962 __func_from_arm:
1963 ldr r12, __func_addr
1964 bx r12
1965 __func_addr:
8f6277f5 1966 .word func @ behave as if you saw a ARM_32 reloc.
252b5132 1967
8f6277f5
PB		 1968 (relocatable images)
1969 .arm
1970 __func_from_arm:
1971 ldr r12, __func_offset
1972 add r12, r12, pc
1973 bx r12
1974 __func_offset:
1975 .word func - .
1976 */
1977
1978#define ARM2THUMB_STATIC_GLUE_SIZE 12
252b5132
RH		 1979static const insn32 a2t1_ldr_insn = 0xe59fc000;
1980static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
1981static const insn32 a2t3_func_addr_insn = 0x00000001;
1982
8f6277f5
PB		 1983#define ARM2THUMB_PIC_GLUE_SIZE 16
1984static const insn32 a2t1p_ldr_insn = 0xe59fc004;
1985static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
1986static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
1987
9b485d32 1988/* Thumb->ARM: Thumb->(non-interworking aware) ARM
252b5132
RH		 1989
1990 .thumb .thumb
1991 .align 2 .align 2
1992 __func_from_thumb: __func_from_thumb:
1993 bx pc push {r6, lr}
1994 nop ldr r6, __func_addr
1995 .arm mov lr, pc
1996 __func_change_to_arm: bx r6
1997 b func .arm
1998 __func_back_to_thumb:
1999 ldmia r13! {r6, lr}
2000 bx lr
2001 __func_addr:
9b485d32 2002 .word func */
252b5132
RH		 2003
2004#define THUMB2ARM_GLUE_SIZE 8
2005static const insn16 t2a1_bx_pc_insn = 0x4778;
2006static const insn16 t2a2_noop_insn = 0x46c0;
2007static const insn32 t2a3_b_insn = 0xea000000;
2008
7e392df6 2009#ifndef ELFARM_NABI_C_INCLUDED
b34976b6 2010bfd_boolean
57e8b36a 2011bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
252b5132
RH		 2012{
2013 asection * s;
2014 bfd_byte * foo;
2015 struct elf32_arm_link_hash_table * globals;
2016
2017 globals = elf32_arm_hash_table (info);
2018
2019 BFD_ASSERT (globals != NULL);
2020
2021 if (globals->arm_glue_size != 0)
2022 {
2023 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2024
dc810e39
AM		 2025 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
2026 ARM2THUMB_GLUE_SECTION_NAME);
252b5132
RH		 2027
2028 BFD_ASSERT (s != NULL);
2029
57e8b36a 2030 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size);
252b5132 2031
eea6121a 2032 s->size = globals->arm_glue_size;
252b5132
RH		 2033 s->contents = foo;
2034 }
2035
2036 if (globals->thumb_glue_size != 0)
2037 {
2038 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2039
2040 s = bfd_get_section_by_name
2041 (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
2042
2043 BFD_ASSERT (s != NULL);
2044
57e8b36a 2045 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size);
252b5132 2046
eea6121a 2047 s->size = globals->thumb_glue_size;
252b5132
RH		 2048 s->contents = foo;
2049 }
2050
b34976b6 2051 return TRUE;
252b5132
RH		 2052}
2053
2054static void
57e8b36a
NC		 2055record_arm_to_thumb_glue (struct bfd_link_info * link_info,
2056 struct elf_link_hash_entry * h)
252b5132
RH		 2057{
2058 const char * name = h->root.root.string;
63b0f745 2059 asection * s;
252b5132
RH		 2060 char * tmp_name;
2061 struct elf_link_hash_entry * myh;
14a793b2 2062 struct bfd_link_hash_entry * bh;
252b5132 2063 struct elf32_arm_link_hash_table * globals;
dc810e39 2064 bfd_vma val;
252b5132
RH		 2065
2066 globals = elf32_arm_hash_table (link_info);
2067
2068 BFD_ASSERT (globals != NULL);
2069 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2070
2071 s = bfd_get_section_by_name
2072 (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
2073
252b5132
RH		 2074 BFD_ASSERT (s != NULL);
2075
57e8b36a 2076 tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 2077
2078 BFD_ASSERT (tmp_name);
2079
2080 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
2081
2082 myh = elf_link_hash_lookup
b34976b6 2083 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH		 2084
2085 if (myh != NULL)
2086 {
9b485d32 2087 /* We've already seen this guy. */
252b5132 2088 free (tmp_name);
9b485d32 2089 return;
252b5132
RH		 2090 }
2091
57e8b36a
NC		 2092 /* The only trick here is using hash_table->arm_glue_size as the value.
2093 Even though the section isn't allocated yet, this is where we will be
2094 putting it. */
14a793b2 2095 bh = NULL;
dc810e39
AM		 2096 val = globals->arm_glue_size + 1;
2097 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
2098 tmp_name, BSF_GLOBAL, s, val,
b34976b6 2099 NULL, TRUE, FALSE, &bh);
252b5132 2100
b7693d02
DJ		 2101 myh = (struct elf_link_hash_entry *) bh;
2102 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
2103 myh->forced_local = 1;
2104
252b5132
RH		 2105 free (tmp_name);
2106
8f6277f5
PB		 2107 if ((link_info->shared || globals->root.is_relocatable_executable))
2108 globals->arm_glue_size += ARM2THUMB_PIC_GLUE_SIZE;
2109 else
2110 globals->arm_glue_size += ARM2THUMB_STATIC_GLUE_SIZE;
252b5132
RH		 2111
2112 return;
2113}
2114
2115static void
57e8b36a
NC		 2116record_thumb_to_arm_glue (struct bfd_link_info *link_info,
2117 struct elf_link_hash_entry *h)
252b5132
RH		 2118{
2119 const char *name = h->root.root.string;
63b0f745 2120 asection *s;
252b5132
RH		 2121 char *tmp_name;
2122 struct elf_link_hash_entry *myh;
14a793b2 2123 struct bfd_link_hash_entry *bh;
252b5132 2124 struct elf32_arm_link_hash_table *hash_table;
dc810e39 2125 bfd_vma val;
252b5132
RH		 2126
2127 hash_table = elf32_arm_hash_table (link_info);
2128
2129 BFD_ASSERT (hash_table != NULL);
2130 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
2131
2132 s = bfd_get_section_by_name
2133 (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
2134
2135 BFD_ASSERT (s != NULL);
2136
57e8b36a
NC		 2137 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2138 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 2139
2140 BFD_ASSERT (tmp_name);
2141
2142 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
2143
2144 myh = elf_link_hash_lookup
b34976b6 2145 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH		 2146
2147 if (myh != NULL)
2148 {
9b485d32 2149 /* We've already seen this guy. */
252b5132 2150 free (tmp_name);
9b485d32 2151 return;
252b5132
RH		 2152 }
2153
14a793b2 2154 bh = NULL;
dc810e39
AM		 2155 val = hash_table->thumb_glue_size + 1;
2156 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2157 tmp_name, BSF_GLOBAL, s, val,
b34976b6 2158 NULL, TRUE, FALSE, &bh);
252b5132 2159
9b485d32 2160 /* If we mark it 'Thumb', the disassembler will do a better job. */
14a793b2 2161 myh = (struct elf_link_hash_entry *) bh;
b7693d02
DJ		 2162 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
2163 myh->forced_local = 1;
252b5132
RH		 2164
2165 free (tmp_name);
2166
252b5132
RH		 2167#define CHANGE_TO_ARM "__%s_change_to_arm"
2168#define BACK_FROM_ARM "__%s_back_from_arm"
2169
9b485d32 2170 /* Allocate another symbol to mark where we switch to Arm mode. */
57e8b36a
NC		 2171 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2172 + strlen (CHANGE_TO_ARM) + 1);
252b5132
RH		 2173
2174 BFD_ASSERT (tmp_name);
2175
2176 sprintf (tmp_name, CHANGE_TO_ARM, name);
2177
14a793b2 2178 bh = NULL;
dc810e39
AM		 2179 val = hash_table->thumb_glue_size + 4,
2180 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2181 tmp_name, BSF_LOCAL, s, val,
b34976b6 2182 NULL, TRUE, FALSE, &bh);
252b5132
RH		 2183
2184 free (tmp_name);
2185
2186 hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
2187
2188 return;
2189}
2190
8afb0e02
NC		 2191/* Add the glue sections to ABFD. This function is called from the
2192 linker scripts in ld/emultempl/{armelf}.em. */
9b485d32 2193
b34976b6 2194bfd_boolean
57e8b36a
NC		 2195bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
2196 struct bfd_link_info *info)
252b5132 2197{
252b5132
RH		 2198 flagword flags;
2199 asection *sec;
2200
8afb0e02
NC		 2201 /* If we are only performing a partial
2202 link do not bother adding the glue. */
1049f94e 2203 if (info->relocatable)
b34976b6 2204 return TRUE;
252b5132 2205
252b5132
RH		 2206 sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME);
2207
2208 if (sec == NULL)
2209 {
57db232e
NC		 2210 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
2211 will prevent elf_link_input_bfd() from processing the contents
2212 of this section. */
811b4bf6 2213 flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY;
252b5132 2214
3496cb2a
L		 2215 sec = bfd_make_section_with_flags (abfd,
2216 ARM2THUMB_GLUE_SECTION_NAME,
2217 flags);
252b5132
RH		 2218
2219 if (sec == NULL
252b5132 2220 || !bfd_set_section_alignment (abfd, sec, 2))
b34976b6 2221 return FALSE;
9a5aca8c 2222
57db232e
NC		 2223 /* Set the gc mark to prevent the section from being removed by garbage
2224 collection, despite the fact that no relocs refer to this section. */
2225 sec->gc_mark = 1;
252b5132
RH		 2226 }
2227
2228 sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME);
2229
2230 if (sec == NULL)
2231 {
57e8b36a
NC		 2232 flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2233 | SEC_CODE | SEC_READONLY;
252b5132 2234
3496cb2a
L		 2235 sec = bfd_make_section_with_flags (abfd,
2236 THUMB2ARM_GLUE_SECTION_NAME,
2237 flags);
252b5132
RH		 2238
2239 if (sec == NULL
252b5132 2240 || !bfd_set_section_alignment (abfd, sec, 2))
b34976b6 2241 return FALSE;
9a5aca8c 2242
57db232e 2243 sec->gc_mark = 1;
252b5132
RH		 2244 }
2245
b34976b6 2246 return TRUE;
8afb0e02
NC		 2247}
2248
2249/* Select a BFD to be used to hold the sections used by the glue code.
2250 This function is called from the linker scripts in ld/emultempl/
2251 {armelf/pe}.em */
2252
b34976b6 2253bfd_boolean
57e8b36a 2254bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
8afb0e02
NC		 2255{
2256 struct elf32_arm_link_hash_table *globals;
2257
2258 /* If we are only performing a partial link
2259 do not bother getting a bfd to hold the glue. */
1049f94e 2260 if (info->relocatable)
b34976b6 2261 return TRUE;
8afb0e02 2262
b7693d02
DJ		 2263 /* Make sure we don't attach the glue sections to a dynamic object. */
2264 BFD_ASSERT (!(abfd->flags & DYNAMIC));
2265
8afb0e02
NC		 2266 globals = elf32_arm_hash_table (info);
2267
2268 BFD_ASSERT (globals != NULL);
2269
2270 if (globals->bfd_of_glue_owner != NULL)
b34976b6 2271 return TRUE;
8afb0e02 2272
252b5132
RH		 2273 /* Save the bfd for later use. */
2274 globals->bfd_of_glue_owner = abfd;
cedb70c5 2275
b34976b6 2276 return TRUE;
252b5132
RH		 2277}
2278
b34976b6 2279bfd_boolean
57e8b36a
NC		 2280bfd_elf32_arm_process_before_allocation (bfd *abfd,
2281 struct bfd_link_info *link_info,
eb043451 2282 int byteswap_code)
252b5132
RH		 2283{
2284 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 2285 Elf_Internal_Rela *internal_relocs = NULL;
252b5132
RH		 2286 Elf_Internal_Rela *irel, *irelend;
2287 bfd_byte *contents = NULL;
252b5132
RH		 2288
2289 asection *sec;
2290 struct elf32_arm_link_hash_table *globals;
2291
2292 /* If we are only performing a partial link do not bother
2293 to construct any glue. */
1049f94e 2294 if (link_info->relocatable)
b34976b6 2295 return TRUE;
252b5132
RH		 2296
2297 /* Here we have a bfd that is to be included on the link. We have a hook
2298 to do reloc rummaging, before section sizes are nailed down. */
252b5132
RH		 2299 globals = elf32_arm_hash_table (link_info);
2300
2301 BFD_ASSERT (globals != NULL);
2302 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2303
e489d0ae
PB		 2304 if (byteswap_code && !bfd_big_endian (abfd))
2305 {
d003868e
AM		 2306 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
2307 abfd);
e489d0ae
PB		 2308 return FALSE;
2309 }
2310 globals->byteswap_code = byteswap_code;
f21f3fe0 2311
252b5132
RH		 2312 /* Rummage around all the relocs and map the glue vectors. */
2313 sec = abfd->sections;
2314
2315 if (sec == NULL)
b34976b6 2316 return TRUE;
252b5132
RH		 2317
2318 for (; sec != NULL; sec = sec->next)
2319 {
2320 if (sec->reloc_count == 0)
2321 continue;
2322
2323 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
252b5132 2324
9b485d32 2325 /* Load the relocs. */
6cdc0ccc 2326 internal_relocs
57e8b36a 2327 = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL,
45d6a902 2328 (Elf_Internal_Rela *) NULL, FALSE);
252b5132 2329
6cdc0ccc
AM		 2330 if (internal_relocs == NULL)
2331 goto error_return;
252b5132 2332
6cdc0ccc
AM		 2333 irelend = internal_relocs + sec->reloc_count;
2334 for (irel = internal_relocs; irel < irelend; irel++)
252b5132
RH		 2335 {
2336 long r_type;
2337 unsigned long r_index;
252b5132
RH		 2338
2339 struct elf_link_hash_entry *h;
2340
2341 r_type = ELF32_R_TYPE (irel->r_info);
2342 r_index = ELF32_R_SYM (irel->r_info);
2343
9b485d32 2344 /* These are the only relocation types we care about. */
ba96a88f 2345 if ( r_type != R_ARM_PC24
b7693d02 2346 && r_type != R_ARM_PLT32
5b5bb741
PB		 2347 && r_type != R_ARM_CALL
2348 && r_type != R_ARM_JUMP24
c19d1205 2349 && r_type != R_ARM_THM_CALL)
252b5132
RH		 2350 continue;
2351
2352 /* Get the section contents if we haven't done so already. */
2353 if (contents == NULL)
2354 {
2355 /* Get cached copy if it exists. */
2356 if (elf_section_data (sec)->this_hdr.contents != NULL)
2357 contents = elf_section_data (sec)->this_hdr.contents;
2358 else
2359 {
2360 /* Go get them off disk. */
57e8b36a 2361 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
252b5132
RH		 2362 goto error_return;
2363 }
2364 }
2365
a7c10850 2366 /* If the relocation is not against a symbol it cannot concern us. */
252b5132
RH		 2367 h = NULL;
2368
9b485d32 2369 /* We don't care about local symbols. */
252b5132
RH		 2370 if (r_index < symtab_hdr->sh_info)
2371 continue;
2372
9b485d32 2373 /* This is an external symbol. */
252b5132
RH		 2374 r_index -= symtab_hdr->sh_info;
2375 h = (struct elf_link_hash_entry *)
2376 elf_sym_hashes (abfd)[r_index];
2377
2378 /* If the relocation is against a static symbol it must be within
2379 the current section and so cannot be a cross ARM/Thumb relocation. */
2380 if (h == NULL)
2381 continue;
2382
b7693d02
DJ		 2383 /* If the call will go through a PLT entry then we do not need
2384 glue. */
2385 if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1)
2386 continue;
2387
252b5132
RH		 2388 switch (r_type)
2389 {
2390 case R_ARM_PC24:
c6596c5e 2391 case R_ARM_PLT32:
5b5bb741
PB		 2392 case R_ARM_CALL:
2393 case R_ARM_JUMP24:
252b5132 2394 /* This one is a call from arm code. We need to look up
2f0ca46a 2395 the target of the call. If it is a thumb target, we
252b5132 2396 insert glue. */
252b5132
RH		 2397 if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC)
2398 record_arm_to_thumb_glue (link_info, h);
2399 break;
2400
c19d1205 2401 case R_ARM_THM_CALL:
f21f3fe0 2402 /* This one is a call from thumb code. We look
2f0ca46a 2403 up the target of the call. If it is not a thumb
bcbdc74c 2404 target, we insert glue. */
252b5132
RH		 2405 if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC)
2406 record_thumb_to_arm_glue (link_info, h);
2407 break;
2408
2409 default:
c6596c5e 2410 abort ();
252b5132
RH		 2411 }
2412 }
6cdc0ccc
AM		 2413
2414 if (contents != NULL
2415 && elf_section_data (sec)->this_hdr.contents != contents)
2416 free (contents);
2417 contents = NULL;
2418
2419 if (internal_relocs != NULL
2420 && elf_section_data (sec)->relocs != internal_relocs)
2421 free (internal_relocs);
2422 internal_relocs = NULL;
252b5132
RH		 2423 }
2424
b34976b6 2425 return TRUE;
9a5aca8c 2426
252b5132 2427error_return:
6cdc0ccc
AM		 2428 if (contents != NULL
2429 && elf_section_data (sec)->this_hdr.contents != contents)
2430 free (contents);
2431 if (internal_relocs != NULL
2432 && elf_section_data (sec)->relocs != internal_relocs)
2433 free (internal_relocs);
9a5aca8c 2434
b34976b6 2435 return FALSE;
252b5132 2436}
7e392df6 2437#endif
252b5132 2438
eb043451 2439
eb043451
PB		 2440/* Set target relocation values needed during linking. */
2441
2442void
2443bfd_elf32_arm_set_target_relocs (struct bfd_link_info *link_info,
2444 int target1_is_rel,
319850b4 2445 char * target2_type,
33bfe774
JB		 2446 int fix_v4bx,
2447 int use_blx)
eb043451
PB		 2448{
2449 struct elf32_arm_link_hash_table *globals;
2450
2451 globals = elf32_arm_hash_table (link_info);
2452
2453 globals->target1_is_rel = target1_is_rel;
2454 if (strcmp (target2_type, "rel") == 0)
2455 globals->target2_reloc = R_ARM_REL32;
eeac373a
PB		 2456 else if (strcmp (target2_type, "abs") == 0)
2457 globals->target2_reloc = R_ARM_ABS32;
eb043451
PB		 2458 else if (strcmp (target2_type, "got-rel") == 0)
2459 globals->target2_reloc = R_ARM_GOT_PREL;
2460 else
2461 {
2462 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
2463 target2_type);
2464 }
319850b4 2465 globals->fix_v4bx = fix_v4bx;
33bfe774 2466 globals->use_blx |= use_blx;
eb043451 2467}
eb043451 2468
252b5132
RH		 2469/* The thumb form of a long branch is a bit finicky, because the offset
2470 encoding is split over two fields, each in it's own instruction. They
f21f3fe0 2471 can occur in any order. So given a thumb form of long branch, and an
252b5132 2472 offset, insert the offset into the thumb branch and return finished
f21f3fe0 2473 instruction.
252b5132 2474
f21f3fe0 2475 It takes two thumb instructions to encode the target address. Each has
4cc11e76 2476 11 bits to invest. The upper 11 bits are stored in one (identified by
f21f3fe0
UD		 2477 H-0.. see below), the lower 11 bits are stored in the other (identified
2478 by H-1).
252b5132 2479
f21f3fe0 2480 Combine together and shifted left by 1 (it's a half word address) and
252b5132
RH		 2481 there you have it.
2482
2483 Op: 1111 = F,
2484 H-0, upper address-0 = 000
2485 Op: 1111 = F,
2486 H-1, lower address-0 = 800
2487
f21f3fe0 2488 They can be ordered either way, but the arm tools I've seen always put
252b5132
RH		 2489 the lower one first. It probably doesn't matter. krk@cygnus.com
2490
2491 XXX: Actually the order does matter. The second instruction (H-1)
2492 moves the computed address into the PC, so it must be the second one
2493 in the sequence. The problem, however is that whilst little endian code
2494 stores the instructions in HI then LOW order, big endian code does the
dfc5f959 2495 reverse. nickc@cygnus.com. */
252b5132 2496
dfc5f959
NC		 2497#define LOW_HI_ORDER 0xF800F000
2498#define HI_LOW_ORDER 0xF000F800
252b5132
RH		 2499
2500static insn32
57e8b36a 2501insert_thumb_branch (insn32 br_insn, int rel_off)
252b5132
RH		 2502{
2503 unsigned int low_bits;
2504 unsigned int high_bits;
2505
252b5132
RH		 2506 BFD_ASSERT ((rel_off & 1) != 1);
2507
dfc5f959
NC		 2508 rel_off >>= 1; /* Half word aligned address. */
2509 low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */
2510 high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */
252b5132
RH		 2511
2512 if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER)
2513 br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits;
2514 else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER)
2515 br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits;
2516 else
9b485d32 2517 /* FIXME: abort is probably not the right call. krk@cygnus.com */
57e8b36a 2518 abort (); /* Error - not a valid branch instruction form. */
252b5132 2519
252b5132
RH		 2520 return br_insn;
2521}
2522
9b485d32
NC		 2523/* Thumb code calling an ARM function. */
2524
252b5132 2525static int
57e8b36a
NC		 2526elf32_thumb_to_arm_stub (struct bfd_link_info * info,
2527 const char * name,
2528 bfd * input_bfd,
2529 bfd * output_bfd,
2530 asection * input_section,
2531 bfd_byte * hit_data,
2532 asection * sym_sec,
2533 bfd_vma offset,
2534 bfd_signed_vma addend,
2535 bfd_vma val)
252b5132 2536{
bcbdc74c 2537 asection * s = 0;
dc810e39 2538 bfd_vma my_offset;
252b5132
RH		 2539 unsigned long int tmp;
2540 long int ret_offset;
bcbdc74c
NC		 2541 struct elf_link_hash_entry * myh;
2542 struct elf32_arm_link_hash_table * globals;
252b5132
RH		 2543
2544 myh = find_thumb_glue (info, name, input_bfd);
2545 if (myh == NULL)
b34976b6 2546 return FALSE;
252b5132
RH		 2547
2548 globals = elf32_arm_hash_table (info);
2549
2550 BFD_ASSERT (globals != NULL);
2551 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2552
2553 my_offset = myh->root.u.def.value;
2554
2555 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
2556 THUMB2ARM_GLUE_SECTION_NAME);
2557
2558 BFD_ASSERT (s != NULL);
2559 BFD_ASSERT (s->contents != NULL);
2560 BFD_ASSERT (s->output_section != NULL);
2561
2562 if ((my_offset & 0x01) == 0x01)
2563 {
2564 if (sym_sec != NULL
2565 && sym_sec->owner != NULL
2566 && !INTERWORK_FLAG (sym_sec->owner))
2567 {
8f615d07 2568 (*_bfd_error_handler)
d003868e
AM		 2569 (_("%B(%s): warning: interworking not enabled.\n"
2570 " first occurrence: %B: thumb call to arm"),
2571 sym_sec->owner, input_bfd, name);
252b5132 2572
b34976b6 2573 return FALSE;
252b5132
RH		 2574 }
2575
2576 --my_offset;
2577 myh->root.u.def.value = my_offset;
2578
dc810e39 2579 bfd_put_16 (output_bfd, (bfd_vma) t2a1_bx_pc_insn,
252b5132
RH		 2580 s->contents + my_offset);
2581
dc810e39 2582 bfd_put_16 (output_bfd, (bfd_vma) t2a2_noop_insn,
252b5132
RH		 2583 s->contents + my_offset + 2);
2584
2585 ret_offset =
9b485d32
NC		 2586 /* Address of destination of the stub. */
2587 ((bfd_signed_vma) val)
252b5132 2588 - ((bfd_signed_vma)
57e8b36a
NC		 2589 /* Offset from the start of the current section
2590 to the start of the stubs. */
9b485d32
NC		 2591 (s->output_offset
2592 /* Offset of the start of this stub from the start of the stubs. */
2593 + my_offset
2594 /* Address of the start of the current section. */
2595 + s->output_section->vma)
2596 /* The branch instruction is 4 bytes into the stub. */
2597 + 4
2598 /* ARM branches work from the pc of the instruction + 8. */
2599 + 8);
252b5132
RH		 2600
2601 bfd_put_32 (output_bfd,
dc810e39 2602 (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
252b5132
RH		 2603 s->contents + my_offset + 4);
2604 }
2605
2606 BFD_ASSERT (my_offset <= globals->thumb_glue_size);
2607
427bfd90
NC		 2608 /* Now go back and fix up the original BL insn to point to here. */
2609 ret_offset =
2610 /* Address of where the stub is located. */
2611 (s->output_section->vma + s->output_offset + my_offset)
2612 /* Address of where the BL is located. */
57e8b36a
NC		 2613 - (input_section->output_section->vma + input_section->output_offset
2614 + offset)
427bfd90
NC		 2615 /* Addend in the relocation. */
2616 - addend
2617 /* Biassing for PC-relative addressing. */
2618 - 8;
252b5132
RH		 2619
2620 tmp = bfd_get_32 (input_bfd, hit_data
2621 - input_section->vma);
2622
2623 bfd_put_32 (output_bfd,
dc810e39 2624 (bfd_vma) insert_thumb_branch (tmp, ret_offset),
252b5132
RH		 2625 hit_data - input_section->vma);
2626
b34976b6 2627 return TRUE;
252b5132
RH		 2628}
2629
9b485d32
NC		 2630/* Arm code calling a Thumb function. */
2631
252b5132 2632static int
57e8b36a
NC		 2633elf32_arm_to_thumb_stub (struct bfd_link_info * info,
2634 const char * name,
2635 bfd * input_bfd,
2636 bfd * output_bfd,
2637 asection * input_section,
2638 bfd_byte * hit_data,
2639 asection * sym_sec,
2640 bfd_vma offset,
2641 bfd_signed_vma addend,
2642 bfd_vma val)
252b5132
RH		 2643{
2644 unsigned long int tmp;
dc810e39 2645 bfd_vma my_offset;
bcbdc74c 2646 asection * s;
252b5132 2647 long int ret_offset;
bcbdc74c
NC		 2648 struct elf_link_hash_entry * myh;
2649 struct elf32_arm_link_hash_table * globals;
252b5132
RH		 2650
2651 myh = find_arm_glue (info, name, input_bfd);
2652 if (myh == NULL)
b34976b6 2653 return FALSE;
252b5132
RH		 2654
2655 globals = elf32_arm_hash_table (info);
2656
2657 BFD_ASSERT (globals != NULL);
2658 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2659
2660 my_offset = myh->root.u.def.value;
2661 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
2662 ARM2THUMB_GLUE_SECTION_NAME);
2663 BFD_ASSERT (s != NULL);
2664 BFD_ASSERT (s->contents != NULL);
2665 BFD_ASSERT (s->output_section != NULL);
2666
2667 if ((my_offset & 0x01) == 0x01)
2668 {
2669 if (sym_sec != NULL
2670 && sym_sec->owner != NULL
2671 && !INTERWORK_FLAG (sym_sec->owner))
2672 {
8f615d07 2673 (*_bfd_error_handler)
d003868e
AM		 2674 (_("%B(%s): warning: interworking not enabled.\n"
2675 " first occurrence: %B: arm call to thumb"),
2676 sym_sec->owner, input_bfd, name);
252b5132 2677 }
9b485d32 2678
252b5132
RH		 2679 --my_offset;
2680 myh->root.u.def.value = my_offset;
2681
8f6277f5
PB		 2682 if ((info->shared || globals->root.is_relocatable_executable))
2683 {
2684 /* For relocatable objects we can't use absolute addresses,
2685 so construct the address from a relative offset. */
2686 /* TODO: If the offset is small it's probably worth
2687 constructing the address with adds. */
2688 bfd_put_32 (output_bfd, (bfd_vma) a2t1p_ldr_insn,
2689 s->contents + my_offset);
2690 bfd_put_32 (output_bfd, (bfd_vma) a2t2p_add_pc_insn,
2691 s->contents + my_offset + 4);
2692 bfd_put_32 (output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
2693 s->contents + my_offset + 8);
2694 /* Adjust the offset by 4 for the position of the add,
2695 and 8 for the pipeline offset. */
2696 ret_offset = (val - (s->output_offset
2697 + s->output_section->vma
2698 + my_offset + 12))
2699 | 1;
2700 bfd_put_32 (output_bfd, ret_offset,
2701 s->contents + my_offset + 12);
2702 }
2703 else
2704 {
2705 bfd_put_32 (output_bfd, (bfd_vma) a2t1_ldr_insn,
2706 s->contents + my_offset);
252b5132 2707
8f6277f5
PB		 2708 bfd_put_32 (output_bfd, (bfd_vma) a2t2_bx_r12_insn,
2709 s->contents + my_offset + 4);
252b5132 2710
8f6277f5
PB		 2711 /* It's a thumb address. Add the low order bit. */
2712 bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
2713 s->contents + my_offset + 8);
2714 }
252b5132
RH		 2715 }
2716
2717 BFD_ASSERT (my_offset <= globals->arm_glue_size);
2718
2719 tmp = bfd_get_32 (input_bfd, hit_data);
2720 tmp = tmp & 0xFF000000;
2721
9b485d32 2722 /* Somehow these are both 4 too far, so subtract 8. */
dc810e39
AM		 2723 ret_offset = (s->output_offset
2724 + my_offset
2725 + s->output_section->vma
2726 - (input_section->output_offset
2727 + input_section->output_section->vma
2728 + offset + addend)
2729 - 8);
9a5aca8c 2730
252b5132
RH		 2731 tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
2732
dc810e39 2733 bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
252b5132 2734
b34976b6 2735 return TRUE;
252b5132
RH		 2736}
2737
eb043451
PB		 2738/* Some relocations map to different relocations depending on the
2739 target. Return the real relocation. */
2740static int
2741arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
2742 int r_type)
2743{
2744 switch (r_type)
2745 {
2746 case R_ARM_TARGET1:
2747 if (globals->target1_is_rel)
2748 return R_ARM_REL32;
2749 else
2750 return R_ARM_ABS32;
2751
2752 case R_ARM_TARGET2:
2753 return globals->target2_reloc;
2754
2755 default:
2756 return r_type;
2757 }
2758}
eb043451 2759
ba93b8ac
DJ		 2760/* Return the base VMA address which should be subtracted from real addresses
2761 when resolving @dtpoff relocation.
2762 This is PT_TLS segment p_vaddr. */
2763
2764static bfd_vma
2765dtpoff_base (struct bfd_link_info *info)
2766{
2767 /* If tls_sec is NULL, we should have signalled an error already. */
2768 if (elf_hash_table (info)->tls_sec == NULL)
2769 return 0;
2770 return elf_hash_table (info)->tls_sec->vma;
2771}
2772
2773/* Return the relocation value for @tpoff relocation
2774 if STT_TLS virtual address is ADDRESS. */
2775
2776static bfd_vma
2777tpoff (struct bfd_link_info *info, bfd_vma address)
2778{
2779 struct elf_link_hash_table *htab = elf_hash_table (info);
2780 bfd_vma base;
2781
2782 /* If tls_sec is NULL, we should have signalled an error already. */
2783 if (htab->tls_sec == NULL)
2784 return 0;
2785 base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
2786 return address - htab->tls_sec->vma + base;
2787}
2788
252b5132 2789/* Perform a relocation as part of a final link. */
9b485d32 2790
252b5132 2791static bfd_reloc_status_type
57e8b36a
NC		 2792elf32_arm_final_link_relocate (reloc_howto_type * howto,
2793 bfd * input_bfd,
2794 bfd * output_bfd,
2795 asection * input_section,
2796 bfd_byte * contents,
2797 Elf_Internal_Rela * rel,
2798 bfd_vma value,
2799 struct bfd_link_info * info,
2800 asection * sym_sec,
2801 const char * sym_name,
2802 int sym_flags,
0945cdfd
DJ		 2803 struct elf_link_hash_entry * h,
2804 bfd_boolean * unresolved_reloc_p)
252b5132
RH		 2805{
2806 unsigned long r_type = howto->type;
2807 unsigned long r_symndx;
2808 bfd_byte * hit_data = contents + rel->r_offset;
2809 bfd * dynobj = NULL;
2810 Elf_Internal_Shdr * symtab_hdr;
2811 struct elf_link_hash_entry ** sym_hashes;
2812 bfd_vma * local_got_offsets;
2813 asection * sgot = NULL;
2814 asection * splt = NULL;
2815 asection * sreloc = NULL;
252b5132 2816 bfd_vma addend;
ba96a88f
NC		 2817 bfd_signed_vma signed_addend;
2818 struct elf32_arm_link_hash_table * globals;
f21f3fe0 2819
9c504268
PB		 2820 globals = elf32_arm_hash_table (info);
2821
9c504268
PB		 2822 /* Some relocation type map to different relocations depending on the
2823 target. We pick the right one here. */
eb043451
PB		 2824 r_type = arm_real_reloc_type (globals, r_type);
2825 if (r_type != howto->type)
2826 howto = elf32_arm_howto_from_type (r_type);
9c504268 2827
cac15327
NC		 2828 /* If the start address has been set, then set the EF_ARM_HASENTRY
2829 flag. Setting this more than once is redundant, but the cost is
2830 not too high, and it keeps the code simple.
99e4ae17 2831
cac15327
NC		 2832 The test is done here, rather than somewhere else, because the
2833 start address is only set just before the final link commences.
2834
2835 Note - if the user deliberately sets a start address of 0, the
2836 flag will not be set. */
2837 if (bfd_get_start_address (output_bfd) != 0)
2838 elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
99e4ae17 2839
252b5132
RH		 2840 dynobj = elf_hash_table (info)->dynobj;
2841 if (dynobj)
2842 {
2843 sgot = bfd_get_section_by_name (dynobj, ".got");
2844 splt = bfd_get_section_by_name (dynobj, ".plt");
2845 }
2846 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
2847 sym_hashes = elf_sym_hashes (input_bfd);
2848 local_got_offsets = elf_local_got_offsets (input_bfd);
2849 r_symndx = ELF32_R_SYM (rel->r_info);
2850
4e7fd91e 2851 if (globals->use_rel)
ba96a88f 2852 {
4e7fd91e
PB		 2853 addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
2854
2855 if (addend & ((howto->src_mask + 1) >> 1))
2856 {
2857 signed_addend = -1;
2858 signed_addend &= ~ howto->src_mask;
2859 signed_addend |= addend;
2860 }
2861 else
2862 signed_addend = addend;
ba96a88f
NC		 2863 }
2864 else
4e7fd91e 2865 addend = signed_addend = rel->r_addend;
f21f3fe0 2866
252b5132
RH		 2867 switch (r_type)
2868 {
2869 case R_ARM_NONE:
28a094c2
DJ		 2870 /* We don't need to find a value for this symbol. It's just a
2871 marker. */
2872 *unresolved_reloc_p = FALSE;
252b5132
RH		 2873 return bfd_reloc_ok;
2874
2875 case R_ARM_PC24:
2876 case R_ARM_ABS32:
2877 case R_ARM_REL32:
5b5bb741
PB		 2878 case R_ARM_CALL:
2879 case R_ARM_JUMP24:
dfc5f959 2880 case R_ARM_XPC25:
eb043451 2881 case R_ARM_PREL31:
7359ea65 2882 case R_ARM_PLT32:
5e681ec4
PB		 2883 /* r_symndx will be zero only for relocs against symbols
2884 from removed linkonce sections, or sections discarded by
2885 a linker script. */
2886 if (r_symndx == 0)
2887 return bfd_reloc_ok;
2888
7359ea65
DJ		 2889 /* Handle relocations which should use the PLT entry. ABS32/REL32
2890 will use the symbol's value, which may point to a PLT entry, but we
2891 don't need to handle that here. If we created a PLT entry, all
2892 branches in this object should go to it. */
ee06dc07 2893 if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32)
7359ea65 2894 && h != NULL
c84cd8ee 2895 && splt != NULL
7359ea65
DJ		 2896 && h->plt.offset != (bfd_vma) -1)
2897 {
c84cd8ee
DJ		 2898 /* If we've created a .plt section, and assigned a PLT entry to
2899 this function, it should not be known to bind locally. If
2900 it were, we would have cleared the PLT entry. */
7359ea65
DJ		 2901 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
2902
2903 value = (splt->output_section->vma
2904 + splt->output_offset
2905 + h->plt.offset);
0945cdfd 2906 *unresolved_reloc_p = FALSE;
7359ea65
DJ		 2907 return _bfd_final_link_relocate (howto, input_bfd, input_section,
2908 contents, rel->r_offset, value,
2909 (bfd_vma) 0);
2910 }
2911
67687978
PB		 2912 /* When generating a shared object or relocatable executable, these
2913 relocations are copied into the output file to be resolved at
2914 run time. */
2915 if ((info->shared || globals->root.is_relocatable_executable)
7359ea65 2916 && (input_section->flags & SEC_ALLOC)
ee06dc07
PB		 2917 && (r_type != R_ARM_REL32
2918 || !SYMBOL_CALLS_LOCAL (info, h))
7359ea65
DJ		 2919 && (h == NULL
2920 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2921 || h->root.type != bfd_link_hash_undefweak)
2922 && r_type != R_ARM_PC24
5b5bb741
PB		 2923 && r_type != R_ARM_CALL
2924 && r_type != R_ARM_JUMP24
ee06dc07 2925 && r_type != R_ARM_PREL31
7359ea65 2926 && r_type != R_ARM_PLT32)
252b5132 2927 {
947216bf
AM		 2928 Elf_Internal_Rela outrel;
2929 bfd_byte *loc;
b34976b6 2930 bfd_boolean skip, relocate;
f21f3fe0 2931
0945cdfd
DJ		 2932 *unresolved_reloc_p = FALSE;
2933
252b5132
RH		 2934 if (sreloc == NULL)
2935 {
2936 const char * name;
f21f3fe0 2937
252b5132
RH		 2938 name = (bfd_elf_string_from_elf_section
2939 (input_bfd,
2940 elf_elfheader (input_bfd)->e_shstrndx,
2941 elf_section_data (input_section)->rel_hdr.sh_name));
2942 if (name == NULL)
2943 return bfd_reloc_notsupported;
f21f3fe0 2944
252b5132
RH		 2945 BFD_ASSERT (strncmp (name, ".rel", 4) == 0
2946 && strcmp (bfd_get_section_name (input_bfd,
2947 input_section),
2948 name + 4) == 0);
f21f3fe0 2949
252b5132
RH		 2950 sreloc = bfd_get_section_by_name (dynobj, name);
2951 BFD_ASSERT (sreloc != NULL);
2952 }
f21f3fe0 2953
b34976b6
AM		 2954 skip = FALSE;
2955 relocate = FALSE;
f21f3fe0 2956
c629eae0
JJ		 2957 outrel.r_offset =
2958 _bfd_elf_section_offset (output_bfd, info, input_section,
2959 rel->r_offset);
2960 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 2961 skip = TRUE;
0bb2d96a 2962 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 2963 skip = TRUE, relocate = TRUE;
252b5132
RH		 2964 outrel.r_offset += (input_section->output_section->vma
2965 + input_section->output_offset);
f21f3fe0 2966
252b5132 2967 if (skip)
0bb2d96a 2968 memset (&outrel, 0, sizeof outrel);
5e681ec4
PB		 2969 else if (h != NULL
2970 && h->dynindx != -1
7359ea65 2971 && (!info->shared
5e681ec4 2972 || !info->symbolic
f5385ebf 2973 || !h->def_regular))
5e681ec4 2974 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 2975 else
2976 {
a16385dc
MM		 2977 int symbol;
2978
5e681ec4
PB		 2979 /* This symbol is local, or marked to become local. */
2980 relocate = TRUE;
b7693d02
DJ		 2981 if (sym_flags == STT_ARM_TFUNC)
2982 value |= 1;
a16385dc 2983 if (globals->symbian_p)
6366ff1e
MM		 2984 {
2985 /* On Symbian OS, the data segment and text segement
2986 can be relocated independently. Therefore, we
2987 must indicate the segment to which this
2988 relocation is relative. The BPABI allows us to
2989 use any symbol in the right segment; we just use
2990 the section symbol as it is convenient. (We
2991 cannot use the symbol given by "h" directly as it
2992 will not appear in the dynamic symbol table.) */
10dbd1f3
NC		 2993 if (sym_sec)
2994 symbol = elf_section_data (sym_sec->output_section)->dynindx;
2995 else
2996 symbol = elf_section_data (input_section->output_section)->dynindx;
6366ff1e
MM		 2997 BFD_ASSERT (symbol != 0);
2998 }
a16385dc
MM		 2999 else
3000 /* On SVR4-ish systems, the dynamic loader cannot
3001 relocate the text and data segments independently,
3002 so the symbol does not matter. */
3003 symbol = 0;
3004 outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
252b5132 3005 }
f21f3fe0 3006
947216bf
AM		 3007 loc = sreloc->contents;
3008 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rel);
3009 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
9a5aca8c 3010
f21f3fe0 3011 /* If this reloc is against an external symbol, we do not want to
252b5132 3012 fiddle with the addend. Otherwise, we need to include the symbol
9b485d32 3013 value so that it becomes an addend for the dynamic reloc. */
252b5132
RH		 3014 if (! relocate)
3015 return bfd_reloc_ok;
9a5aca8c 3016
f21f3fe0 3017 return _bfd_final_link_relocate (howto, input_bfd, input_section,
252b5132
RH		 3018 contents, rel->r_offset, value,
3019 (bfd_vma) 0);
3020 }
3021 else switch (r_type)
3022 {
dfc5f959 3023 case R_ARM_XPC25: /* Arm BLX instruction. */
5b5bb741
PB		 3024 case R_ARM_CALL:
3025 case R_ARM_JUMP24:
dfc5f959 3026 case R_ARM_PC24: /* Arm B/BL instruction */
7359ea65 3027 case R_ARM_PLT32:
dfc5f959 3028 if (r_type == R_ARM_XPC25)
252b5132 3029 {
dfc5f959
NC		 3030 /* Check for Arm calling Arm function. */
3031 /* FIXME: Should we translate the instruction into a BL
3032 instruction instead ? */
3033 if (sym_flags != STT_ARM_TFUNC)
d003868e
AM		 3034 (*_bfd_error_handler)
3035 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
3036 input_bfd,
3037 h ? h->root.root.string : "(local)");
dfc5f959
NC		 3038 }
3039 else
dfc5f959
NC		 3040 {
3041 /* Check for Arm calling Thumb function. */
3042 if (sym_flags == STT_ARM_TFUNC)
3043 {
57e8b36a
NC		 3044 elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
3045 output_bfd, input_section,
3046 hit_data, sym_sec, rel->r_offset,
dfc5f959
NC		 3047 signed_addend, value);
3048 return bfd_reloc_ok;
3049 }
252b5132 3050 }
ba96a88f 3051
dea514f5
PB		 3052 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
3053 where:
3054 S is the address of the symbol in the relocation.
3055 P is address of the instruction being relocated.
3056 A is the addend (extracted from the instruction) in bytes.
3057
3058 S is held in 'value'.
3059 P is the base address of the section containing the
3060 instruction plus the offset of the reloc into that
3061 section, ie:
3062 (input_section->output_section->vma +
3063 input_section->output_offset +
3064 rel->r_offset).
3065 A is the addend, converted into bytes, ie:
3066 (signed_addend * 4)
3067
3068 Note: None of these operations have knowledge of the pipeline
3069 size of the processor, thus it is up to the assembler to
3070 encode this information into the addend. */
3071 value -= (input_section->output_section->vma
3072 + input_section->output_offset);
3073 value -= rel->r_offset;
4e7fd91e
PB		 3074 if (globals->use_rel)
3075 value += (signed_addend << howto->size);
3076 else
3077 /* RELA addends do not have to be adjusted by howto->size. */
3078 value += signed_addend;
23080146 3079
dcb5e6e6
NC		 3080 signed_addend = value;
3081 signed_addend >>= howto->rightshift;
9a5aca8c 3082
59f2c4e7
NC		 3083 /* It is not an error for an undefined weak reference to be
3084 out of range. Any program that branches to such a symbol
9a5aca8c
AM		 3085 is going to crash anyway, so there is no point worrying
3086 about getting the destination exactly right. */
59f2c4e7
NC		 3087 if (! h || h->root.type != bfd_link_hash_undefweak)
3088 {
9b485d32 3089 /* Perform a signed range check. */
dcb5e6e6 3090 if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
59f2c4e7
NC		 3091 || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
3092 return bfd_reloc_overflow;
3093 }
9a5aca8c 3094
dcb5e6e6
NC		 3095 /* If necessary set the H bit in the BLX instruction. */
3096 if (r_type == R_ARM_XPC25 && ((value & 2) == 2))
3097 value = (signed_addend & howto->dst_mask)
3098 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask))
3099 | (1 << 24);
3100 else
dcb5e6e6
NC		 3101 value = (signed_addend & howto->dst_mask)
3102 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
252b5132 3103 break;
f21f3fe0 3104
252b5132
RH		 3105 case R_ARM_ABS32:
3106 value += addend;
3107 if (sym_flags == STT_ARM_TFUNC)
3108 value |= 1;
3109 break;
f21f3fe0 3110
252b5132
RH		 3111 case R_ARM_REL32:
3112 value -= (input_section->output_section->vma
62efb346 3113 + input_section->output_offset + rel->r_offset);
252b5132
RH		 3114 value += addend;
3115 break;
eb043451 3116
eb043451
PB		 3117 case R_ARM_PREL31:
3118 value -= (input_section->output_section->vma
3119 + input_section->output_offset + rel->r_offset);
3120 value += signed_addend;
3121 if (! h || h->root.type != bfd_link_hash_undefweak)
3122 {
3123 /* Check for overflow */
3124 if ((value ^ (value >> 1)) & (1 << 30))
3125 return bfd_reloc_overflow;
3126 }
3127 value &= 0x7fffffff;
3128 value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
3129 if (sym_flags == STT_ARM_TFUNC)
3130 value |= 1;
3131 break;
252b5132 3132 }
f21f3fe0 3133
252b5132
RH		 3134 bfd_put_32 (input_bfd, value, hit_data);
3135 return bfd_reloc_ok;
3136
3137 case R_ARM_ABS8:
3138 value += addend;
3139 if ((long) value > 0x7f || (long) value < -0x80)
3140 return bfd_reloc_overflow;
3141
3142 bfd_put_8 (input_bfd, value, hit_data);
3143 return bfd_reloc_ok;
3144
3145 case R_ARM_ABS16:
3146 value += addend;
3147
3148 if ((long) value > 0x7fff || (long) value < -0x8000)
3149 return bfd_reloc_overflow;
3150
3151 bfd_put_16 (input_bfd, value, hit_data);
3152 return bfd_reloc_ok;
3153
3154 case R_ARM_ABS12:
3155 /* Support ldr and str instruction for the arm */
3156 /* Also thumb b (unconditional branch). ??? Really? */
3157 value += addend;
3158
3159 if ((long) value > 0x7ff || (long) value < -0x800)
3160 return bfd_reloc_overflow;
3161
3162 value |= (bfd_get_32 (input_bfd, hit_data) & 0xfffff000);
3163 bfd_put_32 (input_bfd, value, hit_data);
3164 return bfd_reloc_ok;
3165
3166 case R_ARM_THM_ABS5:
9b485d32 3167 /* Support ldr and str instructions for the thumb. */
4e7fd91e
PB		 3168 if (globals->use_rel)
3169 {
3170 /* Need to refetch addend. */
3171 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
3172 /* ??? Need to determine shift amount from operand size. */
3173 addend >>= howto->rightshift;
3174 }
252b5132
RH		 3175 value += addend;
3176
3177 /* ??? Isn't value unsigned? */
3178 if ((long) value > 0x1f || (long) value < -0x10)
3179 return bfd_reloc_overflow;
3180
3181 /* ??? Value needs to be properly shifted into place first. */
3182 value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
3183 bfd_put_16 (input_bfd, value, hit_data);
3184 return bfd_reloc_ok;
3185
dfc5f959 3186 case R_ARM_THM_XPC22:
c19d1205 3187 case R_ARM_THM_CALL:
dfc5f959 3188 /* Thumb BL (branch long instruction). */
252b5132 3189 {
b34976b6
AM		 3190 bfd_vma relocation;
3191 bfd_boolean overflow = FALSE;
3192 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
3193 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
df212a7e 3194 bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift;
ba96a88f 3195 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
b34976b6 3196 bfd_vma check;
252b5132 3197 bfd_signed_vma signed_check;
33bfe774 3198 bfd_boolean thumb_plt_call = FALSE;
252b5132 3199
252b5132
RH		 3200 /* Need to refetch the addend and squish the two 11 bit pieces
3201 together. */
4e7fd91e
PB		 3202 if (globals->use_rel)
3203 {
3204 bfd_vma upper = upper_insn & 0x7ff;
3205 bfd_vma lower = lower_insn & 0x7ff;
3206 upper = (upper ^ 0x400) - 0x400; /* Sign extend. */
3207 addend = (upper << 12) | (lower << 1);
3208 signed_addend = addend;
3209 }
cb1afa5c 3210
dfc5f959
NC		 3211 if (r_type == R_ARM_THM_XPC22)
3212 {
3213 /* Check for Thumb to Thumb call. */
3214 /* FIXME: Should we translate the instruction into a BL
3215 instruction instead ? */
3216 if (sym_flags == STT_ARM_TFUNC)
d003868e
AM		 3217 (*_bfd_error_handler)
3218 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
3219 input_bfd,
3220 h ? h->root.root.string : "(local)");
dfc5f959
NC		 3221 }
3222 else
252b5132 3223 {
dfc5f959
NC		 3224 /* If it is not a call to Thumb, assume call to Arm.
3225 If it is a call relative to a section name, then it is not a
b7693d02
DJ		 3226 function call at all, but rather a long jump. Calls through
3227 the PLT do not require stubs. */
3228 if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION
3229 && (h == NULL || splt == NULL
3230 || h->plt.offset == (bfd_vma) -1))
dfc5f959
NC		 3231 {
3232 if (elf32_thumb_to_arm_stub
3233 (info, sym_name, input_bfd, output_bfd, input_section,
3234 hit_data, sym_sec, rel->r_offset, signed_addend, value))
3235 return bfd_reloc_ok;
3236 else
3237 return bfd_reloc_dangerous;
3238 }
252b5132 3239 }
f21f3fe0 3240
b7693d02
DJ		 3241 /* Handle calls via the PLT. */
3242 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
3243 {
3244 value = (splt->output_section->vma
3245 + splt->output_offset
3246 + h->plt.offset);
33bfe774
JB		 3247 if (globals->use_blx)
3248 {
3249 /* If the Thumb BLX instruction is available, convert the
3250 BL to a BLX instruction to call the ARM-mode PLT entry. */
3251 if ((lower_insn & (0x3 << 11)) == 0x3 << 11)
3252 {
3253 lower_insn = (lower_insn & ~(0x3 << 11)) | 0x1 << 11;
3254 thumb_plt_call = TRUE;
3255 }
3256 }
3257 else
3258 /* Target the Thumb stub before the ARM PLT entry. */
3259 value -= PLT_THUMB_STUB_SIZE;
0945cdfd 3260 *unresolved_reloc_p = FALSE;
b7693d02
DJ		 3261 }
3262
ba96a88f 3263 relocation = value + signed_addend;
f21f3fe0 3264
252b5132 3265 relocation -= (input_section->output_section->vma
ba96a88f
NC		 3266 + input_section->output_offset
3267 + rel->r_offset);
9a5aca8c 3268
252b5132
RH		 3269 check = relocation >> howto->rightshift;
3270
3271 /* If this is a signed value, the rightshift just dropped
3272 leading 1 bits (assuming twos complement). */
3273 if ((bfd_signed_vma) relocation >= 0)
3274 signed_check = check;
3275 else
3276 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
3277
252b5132 3278 /* Assumes two's complement. */
ba96a88f 3279 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
b34976b6 3280 overflow = TRUE;
252b5132 3281
33bfe774
JB		 3282 if ((r_type == R_ARM_THM_XPC22
3283 && ((lower_insn & 0x1800) == 0x0800))
3284 || thumb_plt_call)
c62e1cc3
NC		 3285 /* For a BLX instruction, make sure that the relocation is rounded up
3286 to a word boundary. This follows the semantics of the instruction
3287 which specifies that bit 1 of the target address will come from bit
3288 1 of the base address. */
3289 relocation = (relocation + 2) & ~ 3;
cb1afa5c 3290
c62e1cc3
NC		 3291 /* Put RELOCATION back into the insn. */
3292 upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 12) & 0x7ff);
3293 lower_insn = (lower_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 1) & 0x7ff);
3294
252b5132
RH		 3295 /* Put the relocated value back in the object file: */
3296 bfd_put_16 (input_bfd, upper_insn, hit_data);
3297 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
3298
3299 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
3300 }
3301 break;
3302
c19d1205
ZW		 3303 case R_ARM_THM_JUMP24:
3304 /* Thumb32 unconditional branch instruction. */
3305 {
3306 bfd_vma relocation;
3307 bfd_boolean overflow = FALSE;
3308 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
3309 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
3310 bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift;
3311 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
3312 bfd_vma check;
3313 bfd_signed_vma signed_check;
3314
3315 /* Need to refetch the addend, reconstruct the top three bits, and glue the
3316 two pieces together. */
3317 if (globals->use_rel)
3318 {
3319 bfd_vma S = (upper_insn & 0x0400) >> 10;
3320 bfd_vma hi = (upper_insn & 0x03ff);
3321 bfd_vma I1 = (lower_insn & 0x2000) >> 13;
3322 bfd_vma I2 = (lower_insn & 0x0800) >> 11;
3323 bfd_vma lo = (lower_insn & 0x07ff);
3324
3325 I1 = !(I1 ^ S);
3326 I2 = !(I2 ^ S);
3327 S = !S;
3328
3329 signed_addend = (S << 24) | (I1 << 23) | (I2 << 22) | (hi << 12) | (lo << 1);
3330 signed_addend -= (1 << 24); /* Sign extend. */
3331 }
3332
3333 /* ??? Should handle interworking? GCC might someday try to
3334 use this for tail calls. */
3335
3336 relocation = value + signed_addend;
3337 relocation -= (input_section->output_section->vma
3338 + input_section->output_offset
3339 + rel->r_offset);
3340
3341 check = relocation >> howto->rightshift;
3342
3343 /* If this is a signed value, the rightshift just dropped
3344 leading 1 bits (assuming twos complement). */
3345 if ((bfd_signed_vma) relocation >= 0)
3346 signed_check = check;
3347 else
3348 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
3349
3350 /* Assumes two's complement. */
3351 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
3352 overflow = TRUE;
3353
3354 /* Put RELOCATION back into the insn. */
3355 {
3356 bfd_vma S = (relocation & 0x01000000) >> 24;
3357 bfd_vma I1 = (relocation & 0x00800000) >> 23;
3358 bfd_vma I2 = (relocation & 0x00400000) >> 22;
3359 bfd_vma hi = (relocation & 0x003ff000) >> 12;
3360 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
3361
3362 I1 = !(I1 ^ S);
3363 I2 = !(I2 ^ S);
3364
3365 upper_insn = (upper_insn & (bfd_vma) 0xf800) | (S << 10) | hi;
3366 lower_insn = (lower_insn & (bfd_vma) 0xd000) | (I1 << 13) | (I2 << 11) | lo;
3367 }
3368
3369 /* Put the relocated value back in the object file: */
3370 bfd_put_16 (input_bfd, upper_insn, hit_data);
3371 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
3372
3373 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
3374 }
3375
3376 case R_ARM_THM_JUMP19:
3377 /* Thumb32 conditional branch instruction. */
3378 {
3379 bfd_vma relocation;
3380 bfd_boolean overflow = FALSE;
3381 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
3382 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
3383 bfd_signed_vma reloc_signed_max = ((1 << (howto->bitsize - 1)) - 1) >> howto->rightshift;
3384 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
3385 bfd_vma check;
3386 bfd_signed_vma signed_check;
3387
3388 /* Need to refetch the addend, reconstruct the top three bits,
3389 and squish the two 11 bit pieces together. */
3390 if (globals->use_rel)
3391 {
3392 bfd_vma S = (upper_insn & 0x0400) >> 10;
3393 bfd_vma upper = (upper_insn & 0x001f);
3394 bfd_vma J1 = (lower_insn & 0x2000) >> 13;
3395 bfd_vma J2 = (lower_insn & 0x0800) >> 11;
3396 bfd_vma lower = (lower_insn & 0x07ff);
3397
3398 upper |= J2 << 6;
3399 upper |= J1 << 7;
3400 upper |= ~S << 8;
3401 upper -= 0x0100; /* Sign extend. */
3402
3403 addend = (upper << 12) | (lower << 1);
3404 signed_addend = addend;
3405 }
3406
3407 /* ??? Should handle interworking? GCC might someday try to
3408 use this for tail calls. */
3409
3410 relocation = value + signed_addend;
3411 relocation -= (input_section->output_section->vma
3412 + input_section->output_offset
3413 + rel->r_offset);
3414
3415 check = relocation >> howto->rightshift;
3416
3417 /* If this is a signed value, the rightshift just dropped
3418 leading 1 bits (assuming twos complement). */
3419 if ((bfd_signed_vma) relocation >= 0)
3420 signed_check = check;
3421 else
3422 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
3423
3424 /* Assumes two's complement. */
3425 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
3426 overflow = TRUE;
3427
3428 /* Put RELOCATION back into the insn. */
3429 {
3430 bfd_vma S = (relocation & 0x00100000) >> 20;
3431 bfd_vma J2 = (relocation & 0x00080000) >> 19;
3432 bfd_vma J1 = (relocation & 0x00040000) >> 18;
3433 bfd_vma hi = (relocation & 0x0003f000) >> 12;
3434 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
3435
3436 upper_insn = (upper_insn & 0xfb30) | (S << 10) | hi;
3437 lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
3438 }
3439
3440 /* Put the relocated value back in the object file: */
3441 bfd_put_16 (input_bfd, upper_insn, hit_data);
3442 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
3443
3444 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
3445 }
3446
3447 case R_ARM_THM_JUMP11:
3448 case R_ARM_THM_JUMP8:
3449 case R_ARM_THM_JUMP6:
51c5503b
NC		 3450 /* Thumb B (branch) instruction). */
3451 {
6cf9e9fe 3452 bfd_signed_vma relocation;
51c5503b
NC		 3453 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
3454 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
51c5503b
NC		 3455 bfd_signed_vma signed_check;
3456
c19d1205
ZW		 3457 /* CZB cannot jump backward. */
3458 if (r_type == R_ARM_THM_JUMP6)
3459 reloc_signed_min = 0;
3460
4e7fd91e 3461 if (globals->use_rel)
6cf9e9fe 3462 {
4e7fd91e
PB		 3463 /* Need to refetch addend. */
3464 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
3465 if (addend & ((howto->src_mask + 1) >> 1))
3466 {
3467 signed_addend = -1;
3468 signed_addend &= ~ howto->src_mask;
3469 signed_addend |= addend;
3470 }
3471 else
3472 signed_addend = addend;
3473 /* The value in the insn has been right shifted. We need to
3474 undo this, so that we can perform the address calculation
3475 in terms of bytes. */
3476 signed_addend <<= howto->rightshift;
6cf9e9fe 3477 }
6cf9e9fe 3478 relocation = value + signed_addend;
51c5503b
NC		 3479
3480 relocation -= (input_section->output_section->vma
3481 + input_section->output_offset
3482 + rel->r_offset);
3483
6cf9e9fe
NC		 3484 relocation >>= howto->rightshift;
3485 signed_check = relocation;
c19d1205
ZW		 3486
3487 if (r_type == R_ARM_THM_JUMP6)
3488 relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
3489 else
3490 relocation &= howto->dst_mask;
51c5503b 3491 relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
cedb70c5 3492
51c5503b
NC		 3493 bfd_put_16 (input_bfd, relocation, hit_data);
3494
3495 /* Assumes two's complement. */
3496 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
3497 return bfd_reloc_overflow;
3498
3499 return bfd_reloc_ok;
3500 }
cedb70c5 3501
8375c36b
PB		 3502 case R_ARM_ALU_PCREL7_0:
3503 case R_ARM_ALU_PCREL15_8:
3504 case R_ARM_ALU_PCREL23_15:
3505 {
3506 bfd_vma insn;
3507 bfd_vma relocation;
3508
3509 insn = bfd_get_32 (input_bfd, hit_data);
4e7fd91e
PB		 3510 if (globals->use_rel)
3511 {
3512 /* Extract the addend. */
3513 addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
3514 signed_addend = addend;
3515 }
8375c36b
PB		 3516 relocation = value + signed_addend;
3517
3518 relocation -= (input_section->output_section->vma
3519 + input_section->output_offset
3520 + rel->r_offset);
3521 insn = (insn & ~0xfff)
3522 | ((howto->bitpos << 7) & 0xf00)
3523 | ((relocation >> howto->bitpos) & 0xff);
3524 bfd_put_32 (input_bfd, value, hit_data);
3525 }
3526 return bfd_reloc_ok;
3527
252b5132
RH		 3528 case R_ARM_GNU_VTINHERIT:
3529 case R_ARM_GNU_VTENTRY:
3530 return bfd_reloc_ok;
3531
c19d1205 3532 case R_ARM_GOTOFF32:
252b5132
RH		 3533 /* Relocation is relative to the start of the
3534 global offset table. */
3535
3536 BFD_ASSERT (sgot != NULL);
3537 if (sgot == NULL)
3538 return bfd_reloc_notsupported;
9a5aca8c 3539
cedb70c5 3540 /* If we are addressing a Thumb function, we need to adjust the
ee29b9fb
RE		 3541 address by one, so that attempts to call the function pointer will
3542 correctly interpret it as Thumb code. */
3543 if (sym_flags == STT_ARM_TFUNC)
3544 value += 1;
3545
252b5132
RH		 3546 /* Note that sgot->output_offset is not involved in this
3547 calculation. We always want the start of .got. If we
3548 define _GLOBAL_OFFSET_TABLE in a different way, as is
3549 permitted by the ABI, we might have to change this
9b485d32 3550 calculation. */
252b5132 3551 value -= sgot->output_section->vma;
f21f3fe0 3552 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17
AJ		 3553 contents, rel->r_offset, value,
3554 (bfd_vma) 0);
252b5132
RH		 3555
3556 case R_ARM_GOTPC:
a7c10850 3557 /* Use global offset table as symbol value. */
252b5132 3558 BFD_ASSERT (sgot != NULL);
f21f3fe0 3559
252b5132
RH		 3560 if (sgot == NULL)
3561 return bfd_reloc_notsupported;
3562
0945cdfd 3563 *unresolved_reloc_p = FALSE;
252b5132 3564 value = sgot->output_section->vma;
f21f3fe0 3565 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17
AJ		 3566 contents, rel->r_offset, value,
3567 (bfd_vma) 0);
f21f3fe0 3568
252b5132 3569 case R_ARM_GOT32:
eb043451 3570 case R_ARM_GOT_PREL:
252b5132 3571 /* Relocation is to the entry for this symbol in the
9b485d32 3572 global offset table. */
252b5132
RH		 3573 if (sgot == NULL)
3574 return bfd_reloc_notsupported;
f21f3fe0 3575
252b5132
RH		 3576 if (h != NULL)
3577 {
3578 bfd_vma off;
5e681ec4 3579 bfd_boolean dyn;
f21f3fe0 3580
252b5132
RH		 3581 off = h->got.offset;
3582 BFD_ASSERT (off != (bfd_vma) -1);
5e681ec4 3583 dyn = globals->root.dynamic_sections_created;
f21f3fe0 3584
5e681ec4 3585 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
50d6c878 3586 || (info->shared
5e681ec4
PB		 3587 && SYMBOL_REFERENCES_LOCAL (info, h))
3588 || (ELF_ST_VISIBILITY (h->other)
3589 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 3590 {
3591 /* This is actually a static link, or it is a -Bsymbolic link
3592 and the symbol is defined locally. We must initialize this
3593 entry in the global offset table. Since the offset must
3594 always be a multiple of 4, we use the least significant bit
3595 to record whether we have initialized it already.
f21f3fe0 3596
252b5132 3597 When doing a dynamic link, we create a .rel.got relocation
f21f3fe0 3598 entry to initialize the value. This is done in the
9b485d32 3599 finish_dynamic_symbol routine. */
252b5132
RH		 3600 if ((off & 1) != 0)
3601 off &= ~1;
3602 else
3603 {
ee29b9fb
RE		 3604 /* If we are addressing a Thumb function, we need to
3605 adjust the address by one, so that attempts to
3606 call the function pointer will correctly
3607 interpret it as Thumb code. */
3608 if (sym_flags == STT_ARM_TFUNC)
3609 value |= 1;
3610
252b5132
RH		 3611 bfd_put_32 (output_bfd, value, sgot->contents + off);
3612 h->got.offset |= 1;
3613 }
3614 }
0945cdfd
DJ		 3615 else
3616 *unresolved_reloc_p = FALSE;
f21f3fe0 3617
252b5132
RH		 3618 value = sgot->output_offset + off;
3619 }
3620 else
3621 {
3622 bfd_vma off;
f21f3fe0 3623
252b5132
RH		 3624 BFD_ASSERT (local_got_offsets != NULL &&
3625 local_got_offsets[r_symndx] != (bfd_vma) -1);
f21f3fe0 3626
252b5132 3627 off = local_got_offsets[r_symndx];
f21f3fe0 3628
252b5132
RH		 3629 /* The offset must always be a multiple of 4. We use the
3630 least significant bit to record whether we have already
9b485d32 3631 generated the necessary reloc. */
252b5132
RH		 3632 if ((off & 1) != 0)
3633 off &= ~1;
3634 else
3635 {
b7693d02
DJ		 3636 /* If we are addressing a Thumb function, we need to
3637 adjust the address by one, so that attempts to
3638 call the function pointer will correctly
3639 interpret it as Thumb code. */
3640 if (sym_flags == STT_ARM_TFUNC)
3641 value |= 1;
3642
252b5132 3643 bfd_put_32 (output_bfd, value, sgot->contents + off);
f21f3fe0 3644
252b5132
RH		 3645 if (info->shared)
3646 {
3647 asection * srelgot;
947216bf
AM		 3648 Elf_Internal_Rela outrel;
3649 bfd_byte *loc;
f21f3fe0 3650
252b5132
RH		 3651 srelgot = bfd_get_section_by_name (dynobj, ".rel.got");
3652 BFD_ASSERT (srelgot != NULL);
f21f3fe0 3653
252b5132 3654 outrel.r_offset = (sgot->output_section->vma
f21f3fe0 3655 + sgot->output_offset
252b5132
RH		 3656 + off);
3657 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
947216bf
AM		 3658 loc = srelgot->contents;
3659 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
3660 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
252b5132 3661 }
f21f3fe0 3662
252b5132
RH		 3663 local_got_offsets[r_symndx] |= 1;
3664 }
f21f3fe0 3665
252b5132
RH		 3666 value = sgot->output_offset + off;
3667 }
eb043451
PB		 3668 if (r_type != R_ARM_GOT32)
3669 value += sgot->output_section->vma;
9a5aca8c 3670
f21f3fe0 3671 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17
AJ		 3672 contents, rel->r_offset, value,
3673 (bfd_vma) 0);
f21f3fe0 3674
ba93b8ac
DJ		 3675 case R_ARM_TLS_LDO32:
3676 value = value - dtpoff_base (info);
3677
3678 return _bfd_final_link_relocate (howto, input_bfd, input_section,
3679 contents, rel->r_offset, value, (bfd_vma) 0);
3680
3681 case R_ARM_TLS_LDM32:
3682 {
3683 bfd_vma off;
3684
3685 if (globals->sgot == NULL)
3686 abort ();
3687
3688 off = globals->tls_ldm_got.offset;
3689
3690 if ((off & 1) != 0)
3691 off &= ~1;
3692 else
3693 {
3694 /* If we don't know the module number, create a relocation
3695 for it. */
3696 if (info->shared)
3697 {
3698 Elf_Internal_Rela outrel;
3699 bfd_byte *loc;
3700
3701 if (globals->srelgot == NULL)
3702 abort ();
3703
3704 outrel.r_offset = (globals->sgot->output_section->vma
3705 + globals->sgot->output_offset + off);
3706 outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
3707
3708 bfd_put_32 (output_bfd, 0, globals->sgot->contents + off);
3709
3710 loc = globals->srelgot->contents;
3711 loc += globals->srelgot->reloc_count++ * sizeof (Elf32_External_Rel);
3712 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3713 }
3714 else
3715 bfd_put_32 (output_bfd, 1, globals->sgot->contents + off);
3716
3717 globals->tls_ldm_got.offset |= 1;
3718 }
3719
3720 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
3721 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
3722
3723 return _bfd_final_link_relocate (howto, input_bfd, input_section,
3724 contents, rel->r_offset, value,
3725 (bfd_vma) 0);
3726 }
3727
3728 case R_ARM_TLS_GD32:
3729 case R_ARM_TLS_IE32:
3730 {
3731 bfd_vma off;
3732 int indx;
3733 char tls_type;
3734
3735 if (globals->sgot == NULL)
3736 abort ();
3737
3738 indx = 0;
3739 if (h != NULL)
3740 {
3741 bfd_boolean dyn;
3742 dyn = globals->root.dynamic_sections_created;
3743 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
3744 && (!info->shared
3745 || !SYMBOL_REFERENCES_LOCAL (info, h)))
3746 {
3747 *unresolved_reloc_p = FALSE;
3748 indx = h->dynindx;
3749 }
3750 off = h->got.offset;
3751 tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
3752 }
3753 else
3754 {
3755 if (local_got_offsets == NULL)
3756 abort ();
3757 off = local_got_offsets[r_symndx];
3758 tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
3759 }
3760
3761 if (tls_type == GOT_UNKNOWN)
3762 abort ();
3763
3764 if ((off & 1) != 0)
3765 off &= ~1;
3766 else
3767 {
3768 bfd_boolean need_relocs = FALSE;
3769 Elf_Internal_Rela outrel;
3770 bfd_byte *loc = NULL;
3771 int cur_off = off;
3772
3773 /* The GOT entries have not been initialized yet. Do it
3774 now, and emit any relocations. If both an IE GOT and a
3775 GD GOT are necessary, we emit the GD first. */
3776
3777 if ((info->shared || indx != 0)
3778 && (h == NULL
3779 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
3780 || h->root.type != bfd_link_hash_undefweak))
3781 {
3782 need_relocs = TRUE;
3783 if (globals->srelgot == NULL)
3784 abort ();
3785 loc = globals->srelgot->contents;
3786 loc += globals->srelgot->reloc_count * sizeof (Elf32_External_Rel);
3787 }
3788
3789 if (tls_type & GOT_TLS_GD)
3790 {
3791 if (need_relocs)
3792 {
3793 outrel.r_offset = (globals->sgot->output_section->vma
3794 + globals->sgot->output_offset + cur_off);
3795 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
3796 bfd_put_32 (output_bfd, 0, globals->sgot->contents + cur_off);
3797
3798 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3799 globals->srelgot->reloc_count++;
3800 loc += sizeof (Elf32_External_Rel);
3801
3802 if (indx == 0)
3803 bfd_put_32 (output_bfd, value - dtpoff_base (info),
3804 globals->sgot->contents + cur_off + 4);
3805 else
3806 {
3807 bfd_put_32 (output_bfd, 0,
3808 globals->sgot->contents + cur_off + 4);
3809
3810 outrel.r_info = ELF32_R_INFO (indx,
3811 R_ARM_TLS_DTPOFF32);
3812 outrel.r_offset += 4;
3813 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3814 globals->srelgot->reloc_count++;
3815 loc += sizeof (Elf32_External_Rel);
3816 }
3817 }
3818 else
3819 {
3820 /* If we are not emitting relocations for a
3821 general dynamic reference, then we must be in a
3822 static link or an executable link with the
3823 symbol binding locally. Mark it as belonging
3824 to module 1, the executable. */
3825 bfd_put_32 (output_bfd, 1,
3826 globals->sgot->contents + cur_off);
3827 bfd_put_32 (output_bfd, value - dtpoff_base (info),
3828 globals->sgot->contents + cur_off + 4);
3829 }
3830
3831 cur_off += 8;
3832 }
3833
3834 if (tls_type & GOT_TLS_IE)
3835 {
3836 if (need_relocs)
3837 {
3838 outrel.r_offset = (globals->sgot->output_section->vma
3839 + globals->sgot->output_offset
3840 + cur_off);
3841 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
3842
3843 if (indx == 0)
3844 bfd_put_32 (output_bfd, value - dtpoff_base (info),
3845 globals->sgot->contents + cur_off);
3846 else
3847 bfd_put_32 (output_bfd, 0,
3848 globals->sgot->contents + cur_off);
3849
3850 bfd_elf32_swap_reloc_out (output_bfd, &outrel, loc);
3851 globals->srelgot->reloc_count++;
3852 loc += sizeof (Elf32_External_Rel);
3853 }
3854 else
3855 bfd_put_32 (output_bfd, tpoff (info, value),
3856 globals->sgot->contents + cur_off);
3857 cur_off += 4;
3858 }
3859
3860 if (h != NULL)
3861 h->got.offset |= 1;
3862 else
3863 local_got_offsets[r_symndx] |= 1;
3864 }
3865
3866 if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
3867 off += 8;
3868 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
3869 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
3870
3871 return _bfd_final_link_relocate (howto, input_bfd, input_section,
3872 contents, rel->r_offset, value,
3873 (bfd_vma) 0);
3874 }
3875
3876 case R_ARM_TLS_LE32:
3877 if (info->shared)
3878 {
3879 (*_bfd_error_handler)
3880 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
3881 input_bfd, input_section,
3882 (long) rel->r_offset, howto->name);
3883 return FALSE;
3884 }
3885 else
3886 value = tpoff (info, value);
3887
3888 return _bfd_final_link_relocate (howto, input_bfd, input_section,
3889 contents, rel->r_offset, value, (bfd_vma) 0);
3890
319850b4
JB		 3891 case R_ARM_V4BX:
3892 if (globals->fix_v4bx)
3893 {
3894 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
3895
3896 /* Ensure that we have a BX instruction. */
3897 BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
3898
3899 /* Preserve Rm (lowest four bits) and the condition code
3900 (highest four bits). Other bits encode MOV PC,Rm. */
3901 insn = (insn & 0xf000000f) | 0x01a0f000;
3902
3903 bfd_put_32 (input_bfd, insn, hit_data);
3904 }
3905 return bfd_reloc_ok;
3906
252b5132
RH		 3907 default:
3908 return bfd_reloc_notsupported;
3909 }
3910}
3911
98c1d4aa
NC		 3912/* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
3913static void
57e8b36a
NC		 3914arm_add_to_rel (bfd * abfd,
3915 bfd_byte * address,
3916 reloc_howto_type * howto,
3917 bfd_signed_vma increment)
98c1d4aa 3918{
98c1d4aa
NC		 3919 bfd_signed_vma addend;
3920
c19d1205 3921 if (howto->type == R_ARM_THM_CALL)
98c1d4aa 3922 {
9a5aca8c
AM		 3923 int upper_insn, lower_insn;
3924 int upper, lower;
98c1d4aa 3925
9a5aca8c
AM		 3926 upper_insn = bfd_get_16 (abfd, address);
3927 lower_insn = bfd_get_16 (abfd, address + 2);
3928 upper = upper_insn & 0x7ff;
3929 lower = lower_insn & 0x7ff;
3930
3931 addend = (upper << 12) | (lower << 1);
ddda4409 3932 addend += increment;
9a5aca8c 3933 addend >>= 1;
98c1d4aa 3934
9a5aca8c
AM		 3935 upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
3936 lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
3937
dc810e39
AM		 3938 bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
3939 bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
9a5aca8c
AM		 3940 }
3941 else
3942 {
3943 bfd_vma contents;
3944
3945 contents = bfd_get_32 (abfd, address);
3946
3947 /* Get the (signed) value from the instruction. */
3948 addend = contents & howto->src_mask;
3949 if (addend & ((howto->src_mask + 1) >> 1))
3950 {
3951 bfd_signed_vma mask;
3952
3953 mask = -1;
3954 mask &= ~ howto->src_mask;
3955 addend |= mask;
3956 }
3957
3958 /* Add in the increment, (which is a byte value). */
3959 switch (howto->type)
3960 {
3961 default:
3962 addend += increment;
3963 break;
3964
3965 case R_ARM_PC24:
c6596c5e 3966 case R_ARM_PLT32:
5b5bb741
PB		 3967 case R_ARM_CALL:
3968 case R_ARM_JUMP24:
9a5aca8c 3969 addend <<= howto->size;
dc810e39 3970 addend += increment;
9a5aca8c
AM		 3971
3972 /* Should we check for overflow here ? */
3973
3974 /* Drop any undesired bits. */
3975 addend >>= howto->rightshift;
3976 break;
3977 }
3978
3979 contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
3980
3981 bfd_put_32 (abfd, contents, address);
ddda4409 3982 }
98c1d4aa 3983}
252b5132 3984
ba93b8ac
DJ		 3985#define IS_ARM_TLS_RELOC(R_TYPE) \
3986 ((R_TYPE) == R_ARM_TLS_GD32 \
3987 || (R_TYPE) == R_ARM_TLS_LDO32 \
3988 || (R_TYPE) == R_ARM_TLS_LDM32 \
3989 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
3990 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
3991 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
3992 || (R_TYPE) == R_ARM_TLS_LE32 \
3993 || (R_TYPE) == R_ARM_TLS_IE32)
3994
252b5132 3995/* Relocate an ARM ELF section. */
b34976b6 3996static bfd_boolean
57e8b36a
NC		 3997elf32_arm_relocate_section (bfd * output_bfd,
3998 struct bfd_link_info * info,
3999 bfd * input_bfd,
4000 asection * input_section,
4001 bfd_byte * contents,
4002 Elf_Internal_Rela * relocs,
4003 Elf_Internal_Sym * local_syms,
4004 asection ** local_sections)
252b5132 4005{
b34976b6
AM		 4006 Elf_Internal_Shdr *symtab_hdr;
4007 struct elf_link_hash_entry **sym_hashes;
4008 Elf_Internal_Rela *rel;
4009 Elf_Internal_Rela *relend;
4010 const char *name;
b32d3aa2 4011 struct elf32_arm_link_hash_table * globals;
252b5132 4012
4e7fd91e
PB		 4013 globals = elf32_arm_hash_table (info);
4014 if (info->relocatable && !globals->use_rel)
b34976b6 4015 return TRUE;
b491616a 4016
252b5132
RH		 4017 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
4018 sym_hashes = elf_sym_hashes (input_bfd);
4019
4020 rel = relocs;
4021 relend = relocs + input_section->reloc_count;
4022 for (; rel < relend; rel++)
4023 {
ba96a88f
NC		 4024 int r_type;
4025 reloc_howto_type * howto;
4026 unsigned long r_symndx;
4027 Elf_Internal_Sym * sym;
4028 asection * sec;
252b5132 4029 struct elf_link_hash_entry * h;
ba96a88f
NC		 4030 bfd_vma relocation;
4031 bfd_reloc_status_type r;
4032 arelent bfd_reloc;
ba93b8ac 4033 char sym_type;
0945cdfd 4034 bfd_boolean unresolved_reloc = FALSE;
f21f3fe0 4035
252b5132 4036 r_symndx = ELF32_R_SYM (rel->r_info);
ba96a88f 4037 r_type = ELF32_R_TYPE (rel->r_info);
b32d3aa2 4038 r_type = arm_real_reloc_type (globals, r_type);
252b5132 4039
ba96a88f
NC		 4040 if ( r_type == R_ARM_GNU_VTENTRY
4041 || r_type == R_ARM_GNU_VTINHERIT)
252b5132
RH		 4042 continue;
4043
b32d3aa2 4044 bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
ba96a88f 4045 howto = bfd_reloc.howto;
252b5132 4046
4e7fd91e 4047 if (info->relocatable && globals->use_rel)
252b5132 4048 {
1049f94e 4049 /* This is a relocatable link. We don't have to change
252b5132
RH		 4050 anything, unless the reloc is against a section symbol,
4051 in which case we have to adjust according to where the
4052 section symbol winds up in the output section. */
4053 if (r_symndx < symtab_hdr->sh_info)
4054 {
4055 sym = local_syms + r_symndx;
4056 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
4057 {
4058 sec = local_sections[r_symndx];
98c1d4aa 4059 arm_add_to_rel (input_bfd, contents + rel->r_offset,
dc810e39
AM		 4060 howto,
4061 (bfd_signed_vma) (sec->output_offset
4062 + sym->st_value));
252b5132
RH		 4063 }
4064 }
4065
4066 continue;
4067 }
4068
4069 /* This is a final link. */
4070 h = NULL;
4071 sym = NULL;
4072 sec = NULL;
9b485d32 4073
252b5132
RH		 4074 if (r_symndx < symtab_hdr->sh_info)
4075 {
4076 sym = local_syms + r_symndx;
ba93b8ac 4077 sym_type = ELF32_ST_TYPE (sym->st_info);
252b5132 4078 sec = local_sections[r_symndx];
4e7fd91e 4079 if (globals->use_rel)
f8df10f4 4080 {
4e7fd91e
PB		 4081 relocation = (sec->output_section->vma
4082 + sec->output_offset
4083 + sym->st_value);
4084 if ((sec->flags & SEC_MERGE)
4085 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
f8df10f4 4086 {
4e7fd91e
PB		 4087 asection *msec;
4088 bfd_vma addend, value;
4089
4090 if (howto->rightshift)
4091 {
4092 (*_bfd_error_handler)
4093 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
4094 input_bfd, input_section,
4095 (long) rel->r_offset, howto->name);
4096 return FALSE;
4097 }
f8df10f4 4098
4e7fd91e 4099 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
f8df10f4 4100
4e7fd91e
PB		 4101 /* Get the (signed) value from the instruction. */
4102 addend = value & howto->src_mask;
4103 if (addend & ((howto->src_mask + 1) >> 1))
4104 {
4105 bfd_signed_vma mask;
f8df10f4 4106
4e7fd91e
PB		 4107 mask = -1;
4108 mask &= ~ howto->src_mask;
4109 addend |= mask;
4110 }
4111 msec = sec;
4112 addend =
4113 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
4114 - relocation;
4115 addend += msec->output_section->vma + msec->output_offset;
4116 value = (value & ~ howto->dst_mask) | (addend & howto->dst_mask);
4117 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
f8df10f4 4118 }
f8df10f4 4119 }
4e7fd91e
PB		 4120 else
4121 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH		 4122 }
4123 else
4124 {
560e09e9 4125 bfd_boolean warned;
560e09e9 4126
b2a8e766
AM		 4127 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
4128 r_symndx, symtab_hdr, sym_hashes,
4129 h, sec, relocation,
4130 unresolved_reloc, warned);
ba93b8ac
DJ		 4131
4132 sym_type = h->type;
252b5132
RH		 4133 }
4134
4135 if (h != NULL)
4136 name = h->root.root.string;
4137 else
4138 {
4139 name = (bfd_elf_string_from_elf_section
4140 (input_bfd, symtab_hdr->sh_link, sym->st_name));
4141 if (name == NULL || *name == '\0')
4142 name = bfd_section_name (input_bfd, sec);
4143 }
f21f3fe0 4144
ba93b8ac
DJ		 4145 if (r_symndx != 0
4146 && r_type != R_ARM_NONE
4147 && (h == NULL
4148 || h->root.type == bfd_link_hash_defined
4149 || h->root.type == bfd_link_hash_defweak)
4150 && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
4151 {
4152 (*_bfd_error_handler)
4153 ((sym_type == STT_TLS
4154 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
4155 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
4156 input_bfd,
4157 input_section,
4158 (long) rel->r_offset,
4159 howto->name,
4160 name);
4161 }
4162
252b5132
RH		 4163 r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
4164 input_section, contents, rel,
4165 relocation, info, sec, name,
4166 (h ? ELF_ST_TYPE (h->type) :
0945cdfd
DJ		 4167 ELF_ST_TYPE (sym->st_info)), h,
4168 &unresolved_reloc);
4169
4170 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
4171 because such sections are not SEC_ALLOC and thus ld.so will
4172 not process them. */
4173 if (unresolved_reloc
4174 && !((input_section->flags & SEC_DEBUGGING) != 0
4175 && h->def_dynamic))
4176 {
4177 (*_bfd_error_handler)
4178 (_("%B(%A+0x%lx): warning: unresolvable relocation %d against symbol `%s'"),
4179 input_bfd, input_section, (long) rel->r_offset,
4180 r_type, h->root.root.string);
4181 return FALSE;
4182 }
252b5132
RH		 4183
4184 if (r != bfd_reloc_ok)
4185 {
4186 const char * msg = (const char *) 0;
4187
4188 switch (r)
4189 {
4190 case bfd_reloc_overflow:
cf919dfd
PB		 4191 /* If the overflowing reloc was to an undefined symbol,
4192 we have already printed one error message and there
4193 is no point complaining again. */
4194 if ((! h ||
4195 h->root.type != bfd_link_hash_undefined)
4196 && (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 4197 (info, (h ? &h->root : NULL), name, howto->name,
4198 (bfd_vma) 0, input_bfd, input_section,
4199 rel->r_offset))))
b34976b6 4200 return FALSE;
252b5132
RH		 4201 break;
4202
4203 case bfd_reloc_undefined:
4204 if (!((*info->callbacks->undefined_symbol)
4205 (info, name, input_bfd, input_section,
b34976b6
AM		 4206 rel->r_offset, TRUE)))
4207 return FALSE;
252b5132
RH		 4208 break;
4209
4210 case bfd_reloc_outofrange:
9b485d32 4211 msg = _("internal error: out of range error");
252b5132
RH		 4212 goto common_error;
4213
4214 case bfd_reloc_notsupported:
9b485d32 4215 msg = _("internal error: unsupported relocation error");
252b5132
RH		 4216 goto common_error;
4217
4218 case bfd_reloc_dangerous:
9b485d32 4219 msg = _("internal error: dangerous error");
252b5132
RH		 4220 goto common_error;
4221
4222 default:
9b485d32 4223 msg = _("internal error: unknown error");
252b5132
RH		 4224 /* fall through */
4225
4226 common_error:
4227 if (!((*info->callbacks->warning)
4228 (info, msg, name, input_bfd, input_section,
4229 rel->r_offset)))
b34976b6 4230 return FALSE;
252b5132
RH		 4231 break;
4232 }
4233 }
4234 }
4235
b34976b6 4236 return TRUE;
252b5132
RH		 4237}
4238
c178919b
NC		 4239/* Set the right machine number. */
4240
4241static bfd_boolean
57e8b36a 4242elf32_arm_object_p (bfd *abfd)
c178919b 4243{
5a6c6817 4244 unsigned int mach;
57e8b36a 4245
5a6c6817 4246 mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
c178919b 4247
5a6c6817
NC		 4248 if (mach != bfd_mach_arm_unknown)
4249 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
4250
4251 else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
4252 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
e16bb312 4253
e16bb312 4254 else
5a6c6817 4255 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
c178919b
NC		 4256
4257 return TRUE;
4258}
4259
fc830a83 4260/* Function to keep ARM specific flags in the ELF header. */
3c9458e9 4261
b34976b6 4262static bfd_boolean
57e8b36a 4263elf32_arm_set_private_flags (bfd *abfd, flagword flags)
252b5132
RH		 4264{
4265 if (elf_flags_init (abfd)
4266 && elf_elfheader (abfd)->e_flags != flags)
4267 {
fc830a83
NC		 4268 if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
4269 {
fd2ec330 4270 if (flags & EF_ARM_INTERWORK)
d003868e
AM		 4271 (*_bfd_error_handler)
4272 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
4273 abfd);
fc830a83 4274 else
d003868e
AM		 4275 _bfd_error_handler
4276 (_("Warning: Clearing the interworking flag of %B due to outside request"),
4277 abfd);
fc830a83 4278 }
252b5132
RH		 4279 }
4280 else
4281 {
4282 elf_elfheader (abfd)->e_flags = flags;
b34976b6 4283 elf_flags_init (abfd) = TRUE;
252b5132
RH		 4284 }
4285
b34976b6 4286 return TRUE;
252b5132
RH		 4287}
4288
fc830a83 4289/* Copy backend specific data from one object module to another. */
9b485d32 4290
b34976b6 4291static bfd_boolean
57e8b36a 4292elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
252b5132
RH		 4293{
4294 flagword in_flags;
4295 flagword out_flags;
4296
fc830a83 4297 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
252b5132 4298 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 4299 return TRUE;
252b5132 4300
fc830a83 4301 in_flags = elf_elfheader (ibfd)->e_flags;
252b5132
RH		 4302 out_flags = elf_elfheader (obfd)->e_flags;
4303
fc830a83
NC		 4304 if (elf_flags_init (obfd)
4305 && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
4306 && in_flags != out_flags)
252b5132 4307 {
252b5132 4308 /* Cannot mix APCS26 and APCS32 code. */
fd2ec330 4309 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
b34976b6 4310 return FALSE;
252b5132
RH		 4311
4312 /* Cannot mix float APCS and non-float APCS code. */
fd2ec330 4313 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
b34976b6 4314 return FALSE;
252b5132
RH		 4315
4316 /* If the src and dest have different interworking flags
4317 then turn off the interworking bit. */
fd2ec330 4318 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
252b5132 4319 {
fd2ec330 4320 if (out_flags & EF_ARM_INTERWORK)
d003868e
AM		 4321 _bfd_error_handler
4322 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
4323 obfd, ibfd);
252b5132 4324
fd2ec330 4325 in_flags &= ~EF_ARM_INTERWORK;
252b5132 4326 }
1006ba19
PB		 4327
4328 /* Likewise for PIC, though don't warn for this case. */
fd2ec330
PB		 4329 if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
4330 in_flags &= ~EF_ARM_PIC;
252b5132
RH		 4331 }
4332
4333 elf_elfheader (obfd)->e_flags = in_flags;
b34976b6 4334 elf_flags_init (obfd) = TRUE;
252b5132 4335
94a3258f
PB		 4336 /* Also copy the EI_OSABI field. */
4337 elf_elfheader (obfd)->e_ident[EI_OSABI] =
4338 elf_elfheader (ibfd)->e_ident[EI_OSABI];
4339
b34976b6 4340 return TRUE;
252b5132
RH		 4341}
4342
4343/* Merge backend specific data from an object file to the output
4344 object file when linking. */
9b485d32 4345
b34976b6 4346static bfd_boolean
57e8b36a 4347elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
252b5132
RH		 4348{
4349 flagword out_flags;
4350 flagword in_flags;
b34976b6 4351 bfd_boolean flags_compatible = TRUE;
cf919dfd 4352 asection *sec;
252b5132 4353
9b485d32 4354 /* Check if we have the same endianess. */
82e51918 4355 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
b34976b6 4356 return FALSE;
1fe494a5 4357
252b5132
RH		 4358 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4359 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 4360 return TRUE;
252b5132 4361
252b5132
RH		 4362 /* The input BFD must have had its flags initialised. */
4363 /* The following seems bogus to me -- The flags are initialized in
4364 the assembler but I don't think an elf_flags_init field is
9b485d32 4365 written into the object. */
252b5132
RH		 4366 /* BFD_ASSERT (elf_flags_init (ibfd)); */
4367
4368 in_flags = elf_elfheader (ibfd)->e_flags;
4369 out_flags = elf_elfheader (obfd)->e_flags;
4370
4371 if (!elf_flags_init (obfd))
4372 {
fe077fa6
NC		 4373 /* If the input is the default architecture and had the default
4374 flags then do not bother setting the flags for the output
4375 architecture, instead allow future merges to do this. If no
4376 future merges ever set these flags then they will retain their
4377 uninitialised values, which surprise surprise, correspond
252b5132 4378 to the default values. */
fe077fa6
NC		 4379 if (bfd_get_arch_info (ibfd)->the_default
4380 && elf_elfheader (ibfd)->e_flags == 0)
b34976b6 4381 return TRUE;
252b5132 4382
b34976b6 4383 elf_flags_init (obfd) = TRUE;
252b5132
RH		 4384 elf_elfheader (obfd)->e_flags = in_flags;
4385
4386 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
4387 && bfd_get_arch_info (obfd)->the_default)
4388 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
4389
b34976b6 4390 return TRUE;
252b5132
RH		 4391 }
4392
5a6c6817
NC		 4393 /* Determine what should happen if the input ARM architecture
4394 does not match the output ARM architecture. */
4395 if (! bfd_arm_merge_machines (ibfd, obfd))
4396 return FALSE;
e16bb312 4397
1006ba19 4398 /* Identical flags must be compatible. */
252b5132 4399 if (in_flags == out_flags)
b34976b6 4400 return TRUE;
252b5132 4401
35a0f415
DJ		 4402 /* Check to see if the input BFD actually contains any sections. If
4403 not, its flags may not have been initialised either, but it
8e3de13a 4404 cannot actually cause any incompatiblity. Do not short-circuit
35a0f415 4405 dynamic objects; their section list may be emptied by
d1f161ea 4406 elf_link_add_object_symbols.
35a0f415 4407
d1f161ea
NC		 4408 Also check to see if there are no code sections in the input.
4409 In this case there is no need to check for code specific flags.
4410 XXX - do we need to worry about floating-point format compatability
4411 in data sections ? */
35a0f415 4412 if (!(ibfd->flags & DYNAMIC))
cf919dfd 4413 {
35a0f415 4414 bfd_boolean null_input_bfd = TRUE;
d1f161ea 4415 bfd_boolean only_data_sections = TRUE;
35a0f415
DJ		 4416
4417 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
cf919dfd 4418 {
35a0f415
DJ		 4419 /* Ignore synthetic glue sections. */
4420 if (strcmp (sec->name, ".glue_7")
4421 && strcmp (sec->name, ".glue_7t"))
4422 {
d1f161ea
NC		 4423 if ((bfd_get_section_flags (ibfd, sec)
4424 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
4425 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
4426 only_data_sections = FALSE;
4427
35a0f415
DJ		 4428 null_input_bfd = FALSE;
4429 break;
4430 }
cf919dfd 4431 }
d1f161ea
NC		 4432
4433 if (null_input_bfd || only_data_sections)
35a0f415 4434 return TRUE;
cf919dfd 4435 }
cf919dfd 4436
252b5132 4437 /* Complain about various flag mismatches. */
fc830a83
NC		 4438 if (EF_ARM_EABI_VERSION (in_flags) != EF_ARM_EABI_VERSION (out_flags))
4439 {
d003868e 4440 _bfd_error_handler
3656d5e3 4441 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
d003868e
AM		 4442 ibfd, obfd,
4443 (in_flags & EF_ARM_EABIMASK) >> 24,
4444 (out_flags & EF_ARM_EABIMASK) >> 24);
b34976b6 4445 return FALSE;
fc830a83 4446 }
252b5132 4447
1006ba19
PB		 4448 /* Not sure what needs to be checked for EABI versions >= 1. */
4449 if (EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
4450 {
fd2ec330 4451 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
1006ba19 4452 {
d003868e
AM		 4453 _bfd_error_handler
4454 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
4455 ibfd, obfd,
4456 in_flags & EF_ARM_APCS_26 ? 26 : 32,
4457 out_flags & EF_ARM_APCS_26 ? 26 : 32);
b34976b6 4458 flags_compatible = FALSE;
1006ba19 4459 }
252b5132 4460
fd2ec330 4461 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
1006ba19 4462 {
5eefb65f 4463 if (in_flags & EF_ARM_APCS_FLOAT)
d003868e
AM		 4464 _bfd_error_handler
4465 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
4466 ibfd, obfd);
5eefb65f 4467 else
d003868e
AM		 4468 _bfd_error_handler
4469 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
4470 ibfd, obfd);
63b0f745 4471
b34976b6 4472 flags_compatible = FALSE;
1006ba19 4473 }
252b5132 4474
96a846ea 4475 if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
1006ba19 4476 {
96a846ea 4477 if (in_flags & EF_ARM_VFP_FLOAT)
d003868e
AM		 4478 _bfd_error_handler
4479 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
4480 ibfd, obfd);
5eefb65f 4481 else
d003868e
AM		 4482 _bfd_error_handler
4483 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
4484 ibfd, obfd);
fde78edd
NC		 4485
4486 flags_compatible = FALSE;
4487 }
4488
4489 if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
4490 {
4491 if (in_flags & EF_ARM_MAVERICK_FLOAT)
d003868e
AM		 4492 _bfd_error_handler
4493 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
4494 ibfd, obfd);
fde78edd 4495 else
d003868e
AM		 4496 _bfd_error_handler
4497 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
4498 ibfd, obfd);
63b0f745 4499
b34976b6 4500 flags_compatible = FALSE;
1006ba19 4501 }
96a846ea
RE		 4502
4503#ifdef EF_ARM_SOFT_FLOAT
4504 if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
4505 {
4506 /* We can allow interworking between code that is VFP format
4507 layout, and uses either soft float or integer regs for
4508 passing floating point arguments and results. We already
4509 know that the APCS_FLOAT flags match; similarly for VFP
4510 flags. */
4511 if ((in_flags & EF_ARM_APCS_FLOAT) != 0
4512 || (in_flags & EF_ARM_VFP_FLOAT) == 0)
4513 {
4514 if (in_flags & EF_ARM_SOFT_FLOAT)
d003868e
AM		 4515 _bfd_error_handler
4516 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
4517 ibfd, obfd);
96a846ea 4518 else
d003868e
AM		 4519 _bfd_error_handler
4520 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
4521 ibfd, obfd);
96a846ea 4522
b34976b6 4523 flags_compatible = FALSE;
96a846ea
RE		 4524 }
4525 }
ee43f35e 4526#endif
252b5132 4527
1006ba19 4528 /* Interworking mismatch is only a warning. */
fd2ec330 4529 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
8f615d07 4530 {
e3c8793a
NC		 4531 if (in_flags & EF_ARM_INTERWORK)
4532 {
d003868e
AM		 4533 _bfd_error_handler
4534 (_("Warning: %B supports interworking, whereas %B does not"),
4535 ibfd, obfd);
e3c8793a
NC		 4536 }
4537 else
4538 {
d003868e
AM		 4539 _bfd_error_handler
4540 (_("Warning: %B does not support interworking, whereas %B does"),
4541 ibfd, obfd);
e3c8793a 4542 }
8f615d07 4543 }
252b5132 4544 }
63b0f745 4545
1006ba19 4546 return flags_compatible;
252b5132
RH		 4547}
4548
9b485d32
NC		 4549/* Display the flags field. */
4550
b34976b6 4551static bfd_boolean
57e8b36a 4552elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
252b5132 4553{
fc830a83
NC		 4554 FILE * file = (FILE *) ptr;
4555 unsigned long flags;
252b5132
RH		 4556
4557 BFD_ASSERT (abfd != NULL && ptr != NULL);
4558
4559 /* Print normal ELF private data. */
4560 _bfd_elf_print_private_bfd_data (abfd, ptr);
4561
fc830a83 4562 flags = elf_elfheader (abfd)->e_flags;
9b485d32
NC		 4563 /* Ignore init flag - it may not be set, despite the flags field
4564 containing valid data. */
252b5132
RH		 4565
4566 /* xgettext:c-format */
9b485d32 4567 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
252b5132 4568
fc830a83
NC		 4569 switch (EF_ARM_EABI_VERSION (flags))
4570 {
4571 case EF_ARM_EABI_UNKNOWN:
4cc11e76 4572 /* The following flag bits are GNU extensions and not part of the
fc830a83
NC		 4573 official ARM ELF extended ABI. Hence they are only decoded if
4574 the EABI version is not set. */
fd2ec330 4575 if (flags & EF_ARM_INTERWORK)
9b485d32 4576 fprintf (file, _(" [interworking enabled]"));
9a5aca8c 4577
fd2ec330 4578 if (flags & EF_ARM_APCS_26)
6c571f00 4579 fprintf (file, " [APCS-26]");
fc830a83 4580 else
6c571f00 4581 fprintf (file, " [APCS-32]");
9a5aca8c 4582
96a846ea
RE		 4583 if (flags & EF_ARM_VFP_FLOAT)
4584 fprintf (file, _(" [VFP float format]"));
fde78edd
NC		 4585 else if (flags & EF_ARM_MAVERICK_FLOAT)
4586 fprintf (file, _(" [Maverick float format]"));
96a846ea
RE		 4587 else
4588 fprintf (file, _(" [FPA float format]"));
4589
fd2ec330 4590 if (flags & EF_ARM_APCS_FLOAT)
9b485d32 4591 fprintf (file, _(" [floats passed in float registers]"));
9a5aca8c 4592
fd2ec330 4593 if (flags & EF_ARM_PIC)
9b485d32 4594 fprintf (file, _(" [position independent]"));
fc830a83 4595
fd2ec330 4596 if (flags & EF_ARM_NEW_ABI)
9b485d32 4597 fprintf (file, _(" [new ABI]"));
9a5aca8c 4598
fd2ec330 4599 if (flags & EF_ARM_OLD_ABI)
9b485d32 4600 fprintf (file, _(" [old ABI]"));
9a5aca8c 4601
fd2ec330 4602 if (flags & EF_ARM_SOFT_FLOAT)
9b485d32 4603 fprintf (file, _(" [software FP]"));
9a5aca8c 4604
96a846ea
RE		 4605 flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
4606 | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
fde78edd
NC		 4607 | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
4608 | EF_ARM_MAVERICK_FLOAT);
fc830a83 4609 break;
9a5aca8c 4610
fc830a83 4611 case EF_ARM_EABI_VER1:
9b485d32 4612 fprintf (file, _(" [Version1 EABI]"));
9a5aca8c 4613
fc830a83 4614 if (flags & EF_ARM_SYMSARESORTED)
9b485d32 4615 fprintf (file, _(" [sorted symbol table]"));
fc830a83 4616 else
9b485d32 4617 fprintf (file, _(" [unsorted symbol table]"));
9a5aca8c 4618
fc830a83
NC		 4619 flags &= ~ EF_ARM_SYMSARESORTED;
4620 break;
9a5aca8c 4621
fd2ec330
PB		 4622 case EF_ARM_EABI_VER2:
4623 fprintf (file, _(" [Version2 EABI]"));
4624
4625 if (flags & EF_ARM_SYMSARESORTED)
4626 fprintf (file, _(" [sorted symbol table]"));
4627 else
4628 fprintf (file, _(" [unsorted symbol table]"));
4629
4630 if (flags & EF_ARM_DYNSYMSUSESEGIDX)
4631 fprintf (file, _(" [dynamic symbols use segment index]"));
4632
4633 if (flags & EF_ARM_MAPSYMSFIRST)
4634 fprintf (file, _(" [mapping symbols precede others]"));
4635
99e4ae17 4636 flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
fd2ec330
PB		 4637 | EF_ARM_MAPSYMSFIRST);
4638 break;
4639
d507cf36
PB		 4640 case EF_ARM_EABI_VER3:
4641 fprintf (file, _(" [Version3 EABI]"));
8cb51566
PB		 4642 break;
4643
4644 case EF_ARM_EABI_VER4:
4645 fprintf (file, _(" [Version4 EABI]"));
d507cf36
PB		 4646
4647 if (flags & EF_ARM_BE8)
4648 fprintf (file, _(" [BE8]"));
4649
4650 if (flags & EF_ARM_LE8)
4651 fprintf (file, _(" [LE8]"));
4652
4653 flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
4654 break;
4655
fc830a83 4656 default:
9b485d32 4657 fprintf (file, _(" <EABI version unrecognised>"));
fc830a83
NC		 4658 break;
4659 }
252b5132 4660
fc830a83 4661 flags &= ~ EF_ARM_EABIMASK;
252b5132 4662
fc830a83 4663 if (flags & EF_ARM_RELEXEC)
9b485d32 4664 fprintf (file, _(" [relocatable executable]"));
252b5132 4665
fc830a83 4666 if (flags & EF_ARM_HASENTRY)
9b485d32 4667 fprintf (file, _(" [has entry point]"));
252b5132 4668
fc830a83
NC		 4669 flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
4670
4671 if (flags)
9b485d32 4672 fprintf (file, _("<Unrecognised flag bits set>"));
9a5aca8c 4673
252b5132
RH		 4674 fputc ('\n', file);
4675
b34976b6 4676 return TRUE;
252b5132
RH		 4677}
4678
4679static int
57e8b36a 4680elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
252b5132 4681{
2f0ca46a
NC		 4682 switch (ELF_ST_TYPE (elf_sym->st_info))
4683 {
4684 case STT_ARM_TFUNC:
4685 return ELF_ST_TYPE (elf_sym->st_info);
ce855c42 4686
2f0ca46a
NC		 4687 case STT_ARM_16BIT:
4688 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
4689 This allows us to distinguish between data used by Thumb instructions
4690 and non-data (which is probably code) inside Thumb regions of an
4691 executable. */
4692 if (type != STT_OBJECT)
4693 return ELF_ST_TYPE (elf_sym->st_info);
4694 break;
9a5aca8c 4695
ce855c42
NC		 4696 default:
4697 break;
2f0ca46a
NC		 4698 }
4699
4700 return type;
252b5132 4701}
f21f3fe0 4702
252b5132 4703static asection *
57e8b36a
NC		 4704elf32_arm_gc_mark_hook (asection * sec,
4705 struct bfd_link_info * info ATTRIBUTE_UNUSED,
4706 Elf_Internal_Rela * rel,
4707 struct elf_link_hash_entry * h,
4708 Elf_Internal_Sym * sym)
252b5132
RH		 4709{
4710 if (h != NULL)
4711 {
4712 switch (ELF32_R_TYPE (rel->r_info))
4713 {
4714 case R_ARM_GNU_VTINHERIT:
4715 case R_ARM_GNU_VTENTRY:
4716 break;
4717
4718 default:
4719 switch (h->root.type)
4720 {
4721 case bfd_link_hash_defined:
4722 case bfd_link_hash_defweak:
4723 return h->root.u.def.section;
4724
4725 case bfd_link_hash_common:
4726 return h->root.u.c.p->section;
e049a0de
ILT		 4727
4728 default:
4729 break;
252b5132
RH		 4730 }
4731 }
4732 }
4733 else
1e2f5b6e 4734 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
9ad5cbcf 4735
252b5132
RH		 4736 return NULL;
4737}
4738
780a67af
NC		 4739/* Update the got entry reference counts for the section being removed. */
4740
b34976b6 4741static bfd_boolean
ba93b8ac
DJ		 4742elf32_arm_gc_sweep_hook (bfd * abfd,
4743 struct bfd_link_info * info,
4744 asection * sec,
4745 const Elf_Internal_Rela * relocs)
252b5132 4746{
5e681ec4
PB		 4747 Elf_Internal_Shdr *symtab_hdr;
4748 struct elf_link_hash_entry **sym_hashes;
4749 bfd_signed_vma *local_got_refcounts;
4750 const Elf_Internal_Rela *rel, *relend;
eb043451
PB		 4751 struct elf32_arm_link_hash_table * globals;
4752
4753 globals = elf32_arm_hash_table (info);
5e681ec4
PB		 4754
4755 elf_section_data (sec)->local_dynrel = NULL;
4756
4757 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4758 sym_hashes = elf_sym_hashes (abfd);
4759 local_got_refcounts = elf_local_got_refcounts (abfd);
4760
4761 relend = relocs + sec->reloc_count;
4762 for (rel = relocs; rel < relend; rel++)
eb043451 4763 {
3eb128b2
AM		 4764 unsigned long r_symndx;
4765 struct elf_link_hash_entry *h = NULL;
eb043451 4766 int r_type;
5e681ec4 4767
3eb128b2
AM		 4768 r_symndx = ELF32_R_SYM (rel->r_info);
4769 if (r_symndx >= symtab_hdr->sh_info)
4770 {
4771 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4772 while (h->root.type == bfd_link_hash_indirect
4773 || h->root.type == bfd_link_hash_warning)
4774 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4775 }
4776
eb043451 4777 r_type = ELF32_R_TYPE (rel->r_info);
eb043451 4778 r_type = arm_real_reloc_type (globals, r_type);
eb043451
PB		 4779 switch (r_type)
4780 {
4781 case R_ARM_GOT32:
eb043451 4782 case R_ARM_GOT_PREL:
ba93b8ac
DJ		 4783 case R_ARM_TLS_GD32:
4784 case R_ARM_TLS_IE32:
3eb128b2 4785 if (h != NULL)
eb043451 4786 {
eb043451
PB		 4787 if (h->got.refcount > 0)
4788 h->got.refcount -= 1;
4789 }
4790 else if (local_got_refcounts != NULL)
4791 {
4792 if (local_got_refcounts[r_symndx] > 0)
4793 local_got_refcounts[r_symndx] -= 1;
4794 }
4795 break;
4796
ba93b8ac
DJ		 4797 case R_ARM_TLS_LDM32:
4798 elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1;
4799 break;
4800
eb043451
PB		 4801 case R_ARM_ABS32:
4802 case R_ARM_REL32:
4803 case R_ARM_PC24:
4804 case R_ARM_PLT32:
5b5bb741
PB		 4805 case R_ARM_CALL:
4806 case R_ARM_JUMP24:
eb043451 4807 case R_ARM_PREL31:
c19d1205 4808 case R_ARM_THM_CALL:
b7693d02
DJ		 4809 /* Should the interworking branches be here also? */
4810
3eb128b2 4811 if (h != NULL)
eb043451
PB		 4812 {
4813 struct elf32_arm_link_hash_entry *eh;
4814 struct elf32_arm_relocs_copied **pp;
4815 struct elf32_arm_relocs_copied *p;
5e681ec4 4816
b7693d02 4817 eh = (struct elf32_arm_link_hash_entry *) h;
5e681ec4 4818
eb043451 4819 if (h->plt.refcount > 0)
b7693d02
DJ		 4820 {
4821 h->plt.refcount -= 1;
c19d1205 4822 if (ELF32_R_TYPE (rel->r_info) == R_ARM_THM_CALL)
b7693d02
DJ		 4823 eh->plt_thumb_refcount--;
4824 }
5e681ec4 4825
eb043451 4826 if (r_type == R_ARM_ABS32
eb043451
PB		 4827 || r_type == R_ARM_REL32)
4828 {
eb043451
PB		 4829 for (pp = &eh->relocs_copied; (p = *pp) != NULL;
4830 pp = &p->next)
4831 if (p->section == sec)
4832 {
4833 p->count -= 1;
ba93b8ac
DJ		 4834 if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32)
4835 p->pc_count -= 1;
eb043451
PB		 4836 if (p->count == 0)
4837 *pp = p->next;
4838 break;
4839 }
4840 }
4841 }
4842 break;
5e681ec4 4843
eb043451
PB		 4844 default:
4845 break;
4846 }
4847 }
5e681ec4 4848
b34976b6 4849 return TRUE;
252b5132
RH		 4850}
4851
780a67af
NC		 4852/* Look through the relocs for a section during the first phase. */
4853
b34976b6 4854static bfd_boolean
57e8b36a
NC		 4855elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
4856 asection *sec, const Elf_Internal_Rela *relocs)
252b5132 4857{
b34976b6
AM		 4858 Elf_Internal_Shdr *symtab_hdr;
4859 struct elf_link_hash_entry **sym_hashes;
4860 struct elf_link_hash_entry **sym_hashes_end;
4861 const Elf_Internal_Rela *rel;
4862 const Elf_Internal_Rela *rel_end;
4863 bfd *dynobj;
5e681ec4 4864 asection *sreloc;
b34976b6 4865 bfd_vma *local_got_offsets;
5e681ec4 4866 struct elf32_arm_link_hash_table *htab;
9a5aca8c 4867
1049f94e 4868 if (info->relocatable)
b34976b6 4869 return TRUE;
9a5aca8c 4870
5e681ec4
PB		 4871 htab = elf32_arm_hash_table (info);
4872 sreloc = NULL;
9a5aca8c 4873
67687978
PB		 4874 /* Create dynamic sections for relocatable executables so that we can
4875 copy relocations. */
4876 if (htab->root.is_relocatable_executable
4877 && ! htab->root.dynamic_sections_created)
4878 {
4879 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
4880 return FALSE;
4881 }
4882
252b5132
RH		 4883 dynobj = elf_hash_table (info)->dynobj;
4884 local_got_offsets = elf_local_got_offsets (abfd);
f21f3fe0 4885
252b5132
RH		 4886 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4887 sym_hashes = elf_sym_hashes (abfd);
9b485d32
NC		 4888 sym_hashes_end = sym_hashes
4889 + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
4890
252b5132
RH		 4891 if (!elf_bad_symtab (abfd))
4892 sym_hashes_end -= symtab_hdr->sh_info;
9b485d32 4893
252b5132
RH		 4894 rel_end = relocs + sec->reloc_count;
4895 for (rel = relocs; rel < rel_end; rel++)
4896 {
4897 struct elf_link_hash_entry *h;
b7693d02 4898 struct elf32_arm_link_hash_entry *eh;
252b5132 4899 unsigned long r_symndx;
eb043451 4900 int r_type;
9a5aca8c 4901
252b5132 4902 r_symndx = ELF32_R_SYM (rel->r_info);
eb043451 4903 r_type = ELF32_R_TYPE (rel->r_info);
eb043451 4904 r_type = arm_real_reloc_type (htab, r_type);
ba93b8ac
DJ		 4905
4906 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
4907 {
4908 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
4909 r_symndx);
4910 return FALSE;
4911 }
4912
252b5132
RH		 4913 if (r_symndx < symtab_hdr->sh_info)
4914 h = NULL;
4915 else
973a3492
L		 4916 {
4917 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
4918 while (h->root.type == bfd_link_hash_indirect
4919 || h->root.type == bfd_link_hash_warning)
4920 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4921 }
9a5aca8c 4922
b7693d02
DJ		 4923 eh = (struct elf32_arm_link_hash_entry *) h;
4924
eb043451 4925 switch (r_type)
252b5132 4926 {
5e681ec4 4927 case R_ARM_GOT32:
eb043451 4928 case R_ARM_GOT_PREL:
ba93b8ac
DJ		 4929 case R_ARM_TLS_GD32:
4930 case R_ARM_TLS_IE32:
5e681ec4 4931 /* This symbol requires a global offset table entry. */
ba93b8ac
DJ		 4932 {
4933 int tls_type, old_tls_type;
5e681ec4 4934
ba93b8ac
DJ		 4935 switch (r_type)
4936 {
4937 case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
4938 case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
4939 default: tls_type = GOT_NORMAL; break;
4940 }
252b5132 4941
ba93b8ac
DJ		 4942 if (h != NULL)
4943 {
4944 h->got.refcount++;
4945 old_tls_type = elf32_arm_hash_entry (h)->tls_type;
4946 }
4947 else
4948 {
4949 bfd_signed_vma *local_got_refcounts;
4950
4951 /* This is a global offset table entry for a local symbol. */
4952 local_got_refcounts = elf_local_got_refcounts (abfd);
4953 if (local_got_refcounts == NULL)
4954 {
4955 bfd_size_type size;
4956
4957 size = symtab_hdr->sh_info;
4958 size *= (sizeof (bfd_signed_vma) + sizeof(char));
4959 local_got_refcounts = bfd_zalloc (abfd, size);
4960 if (local_got_refcounts == NULL)
4961 return FALSE;
4962 elf_local_got_refcounts (abfd) = local_got_refcounts;
4963 elf32_arm_local_got_tls_type (abfd)
4964 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
4965 }
4966 local_got_refcounts[r_symndx] += 1;
4967 old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
4968 }
4969
4970 /* We will already have issued an error message if there is a
4971 TLS / non-TLS mismatch, based on the symbol type. We don't
4972 support any linker relaxations. So just combine any TLS
4973 types needed. */
4974 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
4975 && tls_type != GOT_NORMAL)
4976 tls_type |= old_tls_type;
4977
4978 if (old_tls_type != tls_type)
4979 {
4980 if (h != NULL)
4981 elf32_arm_hash_entry (h)->tls_type = tls_type;
4982 else
4983 elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
4984 }
4985 }
4986 /* Fall through */
4987
4988 case R_ARM_TLS_LDM32:
4989 if (r_type == R_ARM_TLS_LDM32)
4990 htab->tls_ldm_got.refcount++;
4991 /* Fall through */
252b5132 4992
c19d1205 4993 case R_ARM_GOTOFF32:
5e681ec4
PB		 4994 case R_ARM_GOTPC:
4995 if (htab->sgot == NULL)
4996 {
4997 if (htab->root.dynobj == NULL)
4998 htab->root.dynobj = abfd;
4999 if (!create_got_section (htab->root.dynobj, info))
5000 return FALSE;
5001 }
252b5132
RH		 5002 break;
5003
5004 case R_ARM_ABS32:
5005 case R_ARM_REL32:
5006 case R_ARM_PC24:
7359ea65 5007 case R_ARM_PLT32:
5b5bb741
PB		 5008 case R_ARM_CALL:
5009 case R_ARM_JUMP24:
eb043451 5010 case R_ARM_PREL31:
c19d1205 5011 case R_ARM_THM_CALL:
b7693d02 5012 /* Should the interworking branches be listed here? */
7359ea65 5013 if (h != NULL)
5e681ec4
PB		 5014 {
5015 /* If this reloc is in a read-only section, we might
5016 need a copy reloc. We can't check reliably at this
5017 stage whether the section is read-only, as input
5018 sections have not yet been mapped to output sections.
5019 Tentatively set the flag for now, and correct in
5020 adjust_dynamic_symbol. */
7359ea65 5021 if (!info->shared)
f5385ebf 5022 h->non_got_ref = 1;
7359ea65 5023
5e681ec4 5024 /* We may need a .plt entry if the function this reloc
c84cd8ee
DJ		 5025 refers to is in a different object. We can't tell for
5026 sure yet, because something later might force the
5027 symbol local. */
eb043451 5028 if (r_type == R_ARM_PC24
5b5bb741
PB		 5029 || r_type == R_ARM_CALL
5030 || r_type == R_ARM_JUMP24
ee06dc07 5031 || r_type == R_ARM_PREL31
b7693d02 5032 || r_type == R_ARM_PLT32
c19d1205 5033 || r_type == R_ARM_THM_CALL)
f5385ebf 5034 h->needs_plt = 1;
4f199be3
DJ		 5035
5036 /* If we create a PLT entry, this relocation will reference
5037 it, even if it's an ABS32 relocation. */
5038 h->plt.refcount += 1;
b7693d02 5039
c19d1205 5040 if (r_type == R_ARM_THM_CALL)
b7693d02 5041 eh->plt_thumb_refcount += 1;
5e681ec4
PB		 5042 }
5043
67687978
PB		 5044 /* If we are creating a shared library or relocatable executable,
5045 and this is a reloc against a global symbol, or a non PC
5046 relative reloc against a local symbol, then we need to copy
5047 the reloc into the shared library. However, if we are linking
5048 with -Bsymbolic, we do not need to copy a reloc against a
252b5132
RH		 5049 global symbol which is defined in an object we are
5050 including in the link (i.e., DEF_REGULAR is set). At
5051 this point we have not seen all the input files, so it is
5052 possible that DEF_REGULAR is not set now but will be set
5053 later (it is never cleared). We account for that
5054 possibility below by storing information in the
5e681ec4 5055 relocs_copied field of the hash table entry. */
67687978 5056 if ((info->shared || htab->root.is_relocatable_executable)
5e681ec4 5057 && (sec->flags & SEC_ALLOC) != 0
71a976dd
DJ		 5058 && (r_type == R_ARM_ABS32
5059 || (h != NULL && ! h->needs_plt
5060 && (! info->symbolic || ! h->def_regular))))
252b5132 5061 {
5e681ec4
PB		 5062 struct elf32_arm_relocs_copied *p, **head;
5063
252b5132
RH		 5064 /* When creating a shared object, we must copy these
5065 reloc types into the output file. We create a reloc
5066 section in dynobj and make room for this reloc. */
5067 if (sreloc == NULL)
5068 {
5069 const char * name;
5070
5071 name = (bfd_elf_string_from_elf_section
5072 (abfd,
5073 elf_elfheader (abfd)->e_shstrndx,
5074 elf_section_data (sec)->rel_hdr.sh_name));
5075 if (name == NULL)
b34976b6 5076 return FALSE;
252b5132
RH		 5077
5078 BFD_ASSERT (strncmp (name, ".rel", 4) == 0
99e4ae17 5079 && strcmp (bfd_get_section_name (abfd, sec),
252b5132
RH		 5080 name + 4) == 0);
5081
5082 sreloc = bfd_get_section_by_name (dynobj, name);
5083 if (sreloc == NULL)
5084 {
5085 flagword flags;
5086
252b5132
RH		 5087 flags = (SEC_HAS_CONTENTS | SEC_READONLY
5088 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
e5a52504
MM		 5089 if ((sec->flags & SEC_ALLOC) != 0
5090 /* BPABI objects never have dynamic
5091 relocations mapped. */
5092 && !htab->symbian_p)
252b5132 5093 flags |= SEC_ALLOC | SEC_LOAD;
3496cb2a
L		 5094 sreloc = bfd_make_section_with_flags (dynobj,
5095 name,
5096 flags);
252b5132 5097 if (sreloc == NULL
252b5132 5098 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
b34976b6 5099 return FALSE;
252b5132 5100 }
5e681ec4
PB		 5101
5102 elf_section_data (sec)->sreloc = sreloc;
252b5132
RH		 5103 }
5104
5e681ec4
PB		 5105 /* If this is a global symbol, we count the number of
5106 relocations we need for this symbol. */
5107 if (h != NULL)
252b5132 5108 {
5e681ec4
PB		 5109 head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied;
5110 }
5111 else
5112 {
5113 /* Track dynamic relocs needed for local syms too.
5114 We really need local syms available to do this
5115 easily. Oh well. */
57e8b36a 5116
5e681ec4
PB		 5117 asection *s;
5118 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
5119 sec, r_symndx);
5120 if (s == NULL)
5121 return FALSE;
57e8b36a 5122
5e681ec4
PB		 5123 head = ((struct elf32_arm_relocs_copied **)
5124 &elf_section_data (s)->local_dynrel);
5125 }
57e8b36a 5126
5e681ec4
PB		 5127 p = *head;
5128 if (p == NULL || p->section != sec)
5129 {
5130 bfd_size_type amt = sizeof *p;
57e8b36a 5131
5e681ec4 5132 p = bfd_alloc (htab->root.dynobj, amt);
252b5132 5133 if (p == NULL)
5e681ec4
PB		 5134 return FALSE;
5135 p->next = *head;
5136 *head = p;
5137 p->section = sec;
5138 p->count = 0;
ba93b8ac 5139 p->pc_count = 0;
252b5132 5140 }
57e8b36a 5141
ba93b8ac
DJ		 5142 if (r_type == R_ARM_REL32)
5143 p->pc_count += 1;
71a976dd 5144 p->count += 1;
252b5132
RH		 5145 }
5146 break;
5147
5148 /* This relocation describes the C++ object vtable hierarchy.
5149 Reconstruct it for later use during GC. */
5150 case R_ARM_GNU_VTINHERIT:
c152c796 5151 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 5152 return FALSE;
252b5132 5153 break;
9a5aca8c 5154
252b5132
RH		 5155 /* This relocation describes which C++ vtable entries are actually
5156 used. Record for later use during GC. */
5157 case R_ARM_GNU_VTENTRY:
c152c796 5158 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
b34976b6 5159 return FALSE;
252b5132
RH		 5160 break;
5161 }
5162 }
f21f3fe0 5163
b34976b6 5164 return TRUE;
252b5132
RH		 5165}
5166
3c9458e9
NC		 5167/* Treat mapping symbols as special target symbols. */
5168
5169static bfd_boolean
5170elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
5171{
05ea83ed 5172 return bfd_is_arm_mapping_symbol_name (sym->name);
3c9458e9
NC		 5173}
5174
0367ecfb
NC		 5175/* This is a copy of elf_find_function() from elf.c except that
5176 ARM mapping symbols are ignored when looking for function names
5177 and STT_ARM_TFUNC is considered to a function type. */
252b5132 5178
0367ecfb
NC		 5179static bfd_boolean
5180arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
5181 asection * section,
5182 asymbol ** symbols,
5183 bfd_vma offset,
5184 const char ** filename_ptr,
5185 const char ** functionname_ptr)
5186{
5187 const char * filename = NULL;
5188 asymbol * func = NULL;
5189 bfd_vma low_func = 0;
5190 asymbol ** p;
252b5132
RH		 5191
5192 for (p = symbols; *p != NULL; p++)
5193 {
5194 elf_symbol_type *q;
5195
5196 q = (elf_symbol_type *) *p;
5197
252b5132
RH		 5198 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
5199 {
5200 default:
5201 break;
5202 case STT_FILE:
5203 filename = bfd_asymbol_name (&q->symbol);
5204 break;
252b5132
RH		 5205 case STT_FUNC:
5206 case STT_ARM_TFUNC:
9d2da7ca 5207 case STT_NOTYPE:
0367ecfb
NC		 5208 /* Skip $a and $t symbols. */
5209 if ((q->symbol.flags & BSF_LOCAL)
05ea83ed 5210 && bfd_is_arm_mapping_symbol_name (q->symbol.name))
0367ecfb
NC		 5211 continue;
5212 /* Fall through. */
6b40fcba 5213 if (bfd_get_section (&q->symbol) == section
252b5132
RH		 5214 && q->symbol.value >= low_func
5215 && q->symbol.value <= offset)
5216 {
5217 func = (asymbol *) q;
5218 low_func = q->symbol.value;
5219 }
5220 break;
5221 }
5222 }
5223
5224 if (func == NULL)
b34976b6 5225 return FALSE;
252b5132 5226
0367ecfb
NC		 5227 if (filename_ptr)
5228 *filename_ptr = filename;
5229 if (functionname_ptr)
5230 *functionname_ptr = bfd_asymbol_name (func);
5231
5232 return TRUE;
5233}
5234
5235
5236/* Find the nearest line to a particular section and offset, for error
5237 reporting. This code is a duplicate of the code in elf.c, except
5238 that it uses arm_elf_find_function. */
5239
5240static bfd_boolean
5241elf32_arm_find_nearest_line (bfd * abfd,
5242 asection * section,
5243 asymbol ** symbols,
5244 bfd_vma offset,
5245 const char ** filename_ptr,
5246 const char ** functionname_ptr,
5247 unsigned int * line_ptr)
5248{
5249 bfd_boolean found = FALSE;
5250
5251 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
5252
5253 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
5254 filename_ptr, functionname_ptr,
5255 line_ptr, 0,
5256 & elf_tdata (abfd)->dwarf2_find_line_info))
5257 {
5258 if (!*functionname_ptr)
5259 arm_elf_find_function (abfd, section, symbols, offset,
5260 *filename_ptr ? NULL : filename_ptr,
5261 functionname_ptr);
f21f3fe0 5262
0367ecfb
NC		 5263 return TRUE;
5264 }
5265
5266 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
5267 & found, filename_ptr,
5268 functionname_ptr, line_ptr,
5269 & elf_tdata (abfd)->line_info))
5270 return FALSE;
5271
5272 if (found && (*functionname_ptr || *line_ptr))
5273 return TRUE;
5274
5275 if (symbols == NULL)
5276 return FALSE;
5277
5278 if (! arm_elf_find_function (abfd, section, symbols, offset,
5279 filename_ptr, functionname_ptr))
5280 return FALSE;
5281
5282 *line_ptr = 0;
b34976b6 5283 return TRUE;
252b5132
RH		 5284}
5285
4ab527b0
FF		 5286static bfd_boolean
5287elf32_arm_find_inliner_info (bfd * abfd,
5288 const char ** filename_ptr,
5289 const char ** functionname_ptr,
5290 unsigned int * line_ptr)
5291{
5292 bfd_boolean found;
5293 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
5294 functionname_ptr, line_ptr,
5295 & elf_tdata (abfd)->dwarf2_find_line_info);
5296 return found;
5297}
5298
252b5132
RH		 5299/* Adjust a symbol defined by a dynamic object and referenced by a
5300 regular object. The current definition is in some section of the
5301 dynamic object, but we're not including those sections. We have to
5302 change the definition to something the rest of the link can
5303 understand. */
5304
b34976b6 5305static bfd_boolean
57e8b36a
NC		 5306elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
5307 struct elf_link_hash_entry * h)
252b5132
RH		 5308{
5309 bfd * dynobj;
5310 asection * s;
5311 unsigned int power_of_two;
b7693d02 5312 struct elf32_arm_link_hash_entry * eh;
67687978 5313 struct elf32_arm_link_hash_table *globals;
252b5132 5314
67687978 5315 globals = elf32_arm_hash_table (info);
252b5132
RH		 5316 dynobj = elf_hash_table (info)->dynobj;
5317
5318 /* Make sure we know what is going on here. */
5319 BFD_ASSERT (dynobj != NULL
f5385ebf 5320 && (h->needs_plt
f6e332e6 5321 || h->u.weakdef != NULL
f5385ebf
AM		 5322 || (h->def_dynamic
5323 && h->ref_regular
5324 && !h->def_regular)));
252b5132 5325
b7693d02
DJ		 5326 eh = (struct elf32_arm_link_hash_entry *) h;
5327
252b5132
RH		 5328 /* If this is a function, put it in the procedure linkage table. We
5329 will fill in the contents of the procedure linkage table later,
5330 when we know the address of the .got section. */
b7693d02 5331 if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
f5385ebf 5332 || h->needs_plt)
252b5132 5333 {
5e681ec4
PB		 5334 if (h->plt.refcount <= 0
5335 || SYMBOL_CALLS_LOCAL (info, h)
5336 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5337 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 5338 {
5339 /* This case can occur if we saw a PLT32 reloc in an input
5e681ec4
PB		 5340 file, but the symbol was never referred to by a dynamic
5341 object, or if all references were garbage collected. In
5342 such a case, we don't actually need to build a procedure
5343 linkage table, and we can just do a PC24 reloc instead. */
5344 h->plt.offset = (bfd_vma) -1;
b7693d02 5345 eh->plt_thumb_refcount = 0;
f5385ebf 5346 h->needs_plt = 0;
252b5132
RH		 5347 }
5348
b34976b6 5349 return TRUE;
252b5132 5350 }
5e681ec4 5351 else
b7693d02
DJ		 5352 {
5353 /* It's possible that we incorrectly decided a .plt reloc was
5354 needed for an R_ARM_PC24 or similar reloc to a non-function sym
5355 in check_relocs. We can't decide accurately between function
5356 and non-function syms in check-relocs; Objects loaded later in
5357 the link may change h->type. So fix it now. */
5358 h->plt.offset = (bfd_vma) -1;
5359 eh->plt_thumb_refcount = 0;
5360 }
252b5132
RH		 5361
5362 /* If this is a weak symbol, and there is a real definition, the
5363 processor independent code will have arranged for us to see the
5364 real definition first, and we can just use the same value. */
f6e332e6 5365 if (h->u.weakdef != NULL)
252b5132 5366 {
f6e332e6
AM		 5367 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
5368 || h->u.weakdef->root.type == bfd_link_hash_defweak);
5369 h->root.u.def.section = h->u.weakdef->root.u.def.section;
5370 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 5371 return TRUE;
252b5132
RH		 5372 }
5373
ba93b8ac
DJ		 5374 /* If there are no non-GOT references, we do not need a copy
5375 relocation. */
5376 if (!h->non_got_ref)
5377 return TRUE;
5378
252b5132
RH		 5379 /* This is a reference to a symbol defined by a dynamic object which
5380 is not a function. */
5381
5382 /* If we are creating a shared library, we must presume that the
5383 only references to the symbol are via the global offset table.
5384 For such cases we need not do anything here; the relocations will
67687978
PB		 5385 be handled correctly by relocate_section. Relocatable executables
5386 can reference data in shared objects directly, so we don't need to
5387 do anything here. */
5388 if (info->shared || globals->root.is_relocatable_executable)
b34976b6 5389 return TRUE;
252b5132 5390
909272ee
AM		 5391 if (h->size == 0)
5392 {
5393 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
5394 h->root.root.string);
5395 return TRUE;
5396 }
5397
252b5132
RH		 5398 /* We must allocate the symbol in our .dynbss section, which will
5399 become part of the .bss section of the executable. There will be
5400 an entry for this symbol in the .dynsym section. The dynamic
5401 object will contain position independent code, so all references
5402 from the dynamic object to this symbol will go through the global
5403 offset table. The dynamic linker will use the .dynsym entry to
5404 determine the address it must put in the global offset table, so
5405 both the dynamic object and the regular object will refer to the
5406 same memory location for the variable. */
252b5132
RH		 5407 s = bfd_get_section_by_name (dynobj, ".dynbss");
5408 BFD_ASSERT (s != NULL);
5409
5410 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
5411 copy the initial value out of the dynamic object and into the
5412 runtime process image. We need to remember the offset into the
5413 .rel.bss section we are going to use. */
5414 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
5415 {
5416 asection *srel;
5417
5418 srel = bfd_get_section_by_name (dynobj, ".rel.bss");
5419 BFD_ASSERT (srel != NULL);
eea6121a 5420 srel->size += sizeof (Elf32_External_Rel);
f5385ebf 5421 h->needs_copy = 1;
252b5132
RH		 5422 }
5423
5424 /* We need to figure out the alignment required for this symbol. I
5425 have no idea how ELF linkers handle this. */
5426 power_of_two = bfd_log2 (h->size);
5427 if (power_of_two > 3)
5428 power_of_two = 3;
5429
5430 /* Apply the required alignment. */
eea6121a 5431 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
252b5132
RH		 5432 if (power_of_two > bfd_get_section_alignment (dynobj, s))
5433 {
5434 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
b34976b6 5435 return FALSE;
252b5132
RH		 5436 }
5437
5438 /* Define the symbol as being at this point in the section. */
5439 h->root.u.def.section = s;
eea6121a 5440 h->root.u.def.value = s->size;
252b5132
RH		 5441
5442 /* Increment the section size to make room for the symbol. */
eea6121a 5443 s->size += h->size;
252b5132 5444
b34976b6 5445 return TRUE;
252b5132
RH		 5446}
5447
5e681ec4
PB		 5448/* Allocate space in .plt, .got and associated reloc sections for
5449 dynamic relocs. */
5450
5451static bfd_boolean
57e8b36a 5452allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
5e681ec4
PB		 5453{
5454 struct bfd_link_info *info;
5455 struct elf32_arm_link_hash_table *htab;
5456 struct elf32_arm_link_hash_entry *eh;
5457 struct elf32_arm_relocs_copied *p;
5458
b7693d02
DJ		 5459 eh = (struct elf32_arm_link_hash_entry *) h;
5460
5e681ec4
PB		 5461 if (h->root.type == bfd_link_hash_indirect)
5462 return TRUE;
5463
5464 if (h->root.type == bfd_link_hash_warning)
5465 /* When warning symbols are created, they **replace** the "real"
5466 entry in the hash table, thus we never get to see the real
5467 symbol in a hash traversal. So look at it now. */
5468 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5469
5470 info = (struct bfd_link_info *) inf;
5471 htab = elf32_arm_hash_table (info);
5472
5473 if (htab->root.dynamic_sections_created
5474 && h->plt.refcount > 0)
5475 {
5476 /* Make sure this symbol is output as a dynamic symbol.
5477 Undefined weak syms won't yet be marked as dynamic. */
5478 if (h->dynindx == -1
f5385ebf 5479 && !h->forced_local)
5e681ec4 5480 {
c152c796 5481 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB		 5482 return FALSE;
5483 }
5484
5485 if (info->shared
7359ea65 5486 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
5e681ec4
PB		 5487 {
5488 asection *s = htab->splt;
5489
5490 /* If this is the first .plt entry, make room for the special
5491 first entry. */
eea6121a 5492 if (s->size == 0)
e5a52504 5493 s->size += htab->plt_header_size;
5e681ec4 5494
eea6121a 5495 h->plt.offset = s->size;
5e681ec4 5496
b7693d02
DJ		 5497 /* If we will insert a Thumb trampoline before this PLT, leave room
5498 for it. */
33bfe774 5499 if (!htab->use_blx && eh->plt_thumb_refcount > 0)
b7693d02
DJ		 5500 {
5501 h->plt.offset += PLT_THUMB_STUB_SIZE;
5502 s->size += PLT_THUMB_STUB_SIZE;
5503 }
5504
5e681ec4
PB		 5505 /* If this symbol is not defined in a regular file, and we are
5506 not generating a shared library, then set the symbol to this
5507 location in the .plt. This is required to make function
5508 pointers compare as equal between the normal executable and
5509 the shared library. */
5510 if (! info->shared
f5385ebf 5511 && !h->def_regular)
5e681ec4
PB		 5512 {
5513 h->root.u.def.section = s;
5514 h->root.u.def.value = h->plt.offset;
b7693d02
DJ		 5515
5516 /* Make sure the function is not marked as Thumb, in case
5517 it is the target of an ABS32 relocation, which will
5518 point to the PLT entry. */
5519 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
5520 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
5e681ec4
PB		 5521 }
5522
5523 /* Make room for this entry. */
e5a52504 5524 s->size += htab->plt_entry_size;
5e681ec4 5525
e5a52504 5526 if (!htab->symbian_p)
b7693d02
DJ		 5527 {
5528 /* We also need to make an entry in the .got.plt section, which
5529 will be placed in the .got section by the linker script. */
5530 eh->plt_got_offset = htab->sgotplt->size;
5531 htab->sgotplt->size += 4;
5532 }
5e681ec4
PB		 5533
5534 /* We also need to make an entry in the .rel.plt section. */
eea6121a 5535 htab->srelplt->size += sizeof (Elf32_External_Rel);
5e681ec4
PB		 5536 }
5537 else
5538 {
5539 h->plt.offset = (bfd_vma) -1;
f5385ebf 5540 h->needs_plt = 0;
5e681ec4
PB		 5541 }
5542 }
5543 else
5544 {
5545 h->plt.offset = (bfd_vma) -1;
f5385ebf 5546 h->needs_plt = 0;
5e681ec4
PB		 5547 }
5548
5549 if (h->got.refcount > 0)
5550 {
5551 asection *s;
5552 bfd_boolean dyn;
ba93b8ac
DJ		 5553 int tls_type = elf32_arm_hash_entry (h)->tls_type;
5554 int indx;
5e681ec4
PB		 5555
5556 /* Make sure this symbol is output as a dynamic symbol.
5557 Undefined weak syms won't yet be marked as dynamic. */
5558 if (h->dynindx == -1
f5385ebf 5559 && !h->forced_local)
5e681ec4 5560 {
c152c796 5561 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB		 5562 return FALSE;
5563 }
5564
e5a52504
MM		 5565 if (!htab->symbian_p)
5566 {
5567 s = htab->sgot;
5568 h->got.offset = s->size;
ba93b8ac
DJ		 5569
5570 if (tls_type == GOT_UNKNOWN)
5571 abort ();
5572
5573 if (tls_type == GOT_NORMAL)
5574 /* Non-TLS symbols need one GOT slot. */
5575 s->size += 4;
5576 else
5577 {
5578 if (tls_type & GOT_TLS_GD)
5579 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
5580 s->size += 8;
5581 if (tls_type & GOT_TLS_IE)
5582 /* R_ARM_TLS_IE32 needs one GOT slot. */
5583 s->size += 4;
5584 }
5585
e5a52504 5586 dyn = htab->root.dynamic_sections_created;
ba93b8ac
DJ		 5587
5588 indx = 0;
5589 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5590 && (!info->shared
5591 || !SYMBOL_REFERENCES_LOCAL (info, h)))
5592 indx = h->dynindx;
5593
5594 if (tls_type != GOT_NORMAL
5595 && (info->shared || indx != 0)
5596 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5597 || h->root.type != bfd_link_hash_undefweak))
5598 {
5599 if (tls_type & GOT_TLS_IE)
5600 htab->srelgot->size += sizeof (Elf32_External_Rel);
5601
5602 if (tls_type & GOT_TLS_GD)
5603 htab->srelgot->size += sizeof (Elf32_External_Rel);
5604
5605 if ((tls_type & GOT_TLS_GD) && indx != 0)
5606 htab->srelgot->size += sizeof (Elf32_External_Rel);
5607 }
5608 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5609 || h->root.type != bfd_link_hash_undefweak)
5610 && (info->shared
5611 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
e5a52504
MM		 5612 htab->srelgot->size += sizeof (Elf32_External_Rel);
5613 }
5e681ec4
PB		 5614 }
5615 else
5616 h->got.offset = (bfd_vma) -1;
5617
5e681ec4
PB		 5618 if (eh->relocs_copied == NULL)
5619 return TRUE;
5620
5621 /* In the shared -Bsymbolic case, discard space allocated for
5622 dynamic pc-relative relocs against symbols which turn out to be
5623 defined in regular objects. For the normal shared case, discard
5624 space for pc-relative relocs that have become local due to symbol
5625 visibility changes. */
5626
67687978 5627 if (info->shared || htab->root.is_relocatable_executable)
5e681ec4 5628 {
ba93b8ac
DJ		 5629 /* The only reloc that uses pc_count is R_ARM_REL32, which will
5630 appear on something like ".long foo - .". We want calls to
5631 protected symbols to resolve directly to the function rather
5632 than going via the plt. If people want function pointer
5633 comparisons to work as expected then they should avoid
5634 writing assembly like ".long foo - .". */
5635 if (SYMBOL_CALLS_LOCAL (info, h))
5636 {
5637 struct elf32_arm_relocs_copied **pp;
5638
5639 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
5640 {
5641 p->count -= p->pc_count;
5642 p->pc_count = 0;
5643 if (p->count == 0)
5644 *pp = p->next;
5645 else
5646 pp = &p->next;
5647 }
5648 }
5649
5650 /* Also discard relocs on undefined weak syms with non-default
7359ea65 5651 visibility. */
5e681ec4
PB		 5652 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
5653 && h->root.type == bfd_link_hash_undefweak)
5654 eh->relocs_copied = NULL;
67687978
PB		 5655 else if (htab->root.is_relocatable_executable && h->dynindx == -1
5656 && h->root.type == bfd_link_hash_new)
5657 {
5658 /* Output absolute symbols so that we can create relocations
5659 against them. For normal symbols we output a relocation
5660 against the section that contains them. */
5661 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5662 return FALSE;
5663 }
5664
5e681ec4
PB		 5665 }
5666 else
5667 {
5668 /* For the non-shared case, discard space for relocs against
5669 symbols which turn out to need copy relocs or are not
5670 dynamic. */
5671
f5385ebf
AM		 5672 if (!h->non_got_ref
5673 && ((h->def_dynamic
5674 && !h->def_regular)
5e681ec4
PB		 5675 || (htab->root.dynamic_sections_created
5676 && (h->root.type == bfd_link_hash_undefweak
5677 || h->root.type == bfd_link_hash_undefined))))
5678 {
5679 /* Make sure this symbol is output as a dynamic symbol.
5680 Undefined weak syms won't yet be marked as dynamic. */
5681 if (h->dynindx == -1
f5385ebf 5682 && !h->forced_local)
5e681ec4 5683 {
c152c796 5684 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB		 5685 return FALSE;
5686 }
5687
5688 /* If that succeeded, we know we'll be keeping all the
5689 relocs. */
5690 if (h->dynindx != -1)
5691 goto keep;
5692 }
5693
5694 eh->relocs_copied = NULL;
5695
5696 keep: ;
5697 }
5698
5699 /* Finally, allocate space. */
5700 for (p = eh->relocs_copied; p != NULL; p = p->next)
5701 {
5702 asection *sreloc = elf_section_data (p->section)->sreloc;
eea6121a 5703 sreloc->size += p->count * sizeof (Elf32_External_Rel);
5e681ec4
PB		 5704 }
5705
5706 return TRUE;
5707}
5708
08d1f311
DJ		 5709/* Find any dynamic relocs that apply to read-only sections. */
5710
5711static bfd_boolean
5712elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
5713{
5714 struct elf32_arm_link_hash_entry *eh;
5715 struct elf32_arm_relocs_copied *p;
5716
5717 if (h->root.type == bfd_link_hash_warning)
5718 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5719
5720 eh = (struct elf32_arm_link_hash_entry *) h;
5721 for (p = eh->relocs_copied; p != NULL; p = p->next)
5722 {
5723 asection *s = p->section;
5724
5725 if (s != NULL && (s->flags & SEC_READONLY) != 0)
5726 {
5727 struct bfd_link_info *info = (struct bfd_link_info *) inf;
5728
5729 info->flags |= DF_TEXTREL;
5730
5731 /* Not an error, just cut short the traversal. */
5732 return FALSE;
5733 }
5734 }
5735 return TRUE;
5736}
5737
252b5132
RH		 5738/* Set the sizes of the dynamic sections. */
5739
b34976b6 5740static bfd_boolean
57e8b36a
NC		 5741elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
5742 struct bfd_link_info * info)
252b5132
RH		 5743{
5744 bfd * dynobj;
5745 asection * s;
b34976b6
AM		 5746 bfd_boolean plt;
5747 bfd_boolean relocs;
5e681ec4
PB		 5748 bfd *ibfd;
5749 struct elf32_arm_link_hash_table *htab;
252b5132 5750
5e681ec4 5751 htab = elf32_arm_hash_table (info);
252b5132
RH		 5752 dynobj = elf_hash_table (info)->dynobj;
5753 BFD_ASSERT (dynobj != NULL);
5754
5755 if (elf_hash_table (info)->dynamic_sections_created)
5756 {
5757 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 5758 if (info->executable)
252b5132
RH		 5759 {
5760 s = bfd_get_section_by_name (dynobj, ".interp");
5761 BFD_ASSERT (s != NULL);
eea6121a 5762 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 5763 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
5764 }
5765 }
5e681ec4
PB		 5766
5767 /* Set up .got offsets for local syms, and space for local dynamic
5768 relocs. */
5769 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
252b5132 5770 {
5e681ec4
PB		 5771 bfd_signed_vma *local_got;
5772 bfd_signed_vma *end_local_got;
5773 char *local_tls_type;
5774 bfd_size_type locsymcount;
5775 Elf_Internal_Shdr *symtab_hdr;
5776 asection *srel;
5777
5778 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
5779 continue;
5780
5781 for (s = ibfd->sections; s != NULL; s = s->next)
5782 {
5783 struct elf32_arm_relocs_copied *p;
5784
5785 for (p = *((struct elf32_arm_relocs_copied **)
5786 &elf_section_data (s)->local_dynrel);
5787 p != NULL;
5788 p = p->next)
5789 {
5790 if (!bfd_is_abs_section (p->section)
5791 && bfd_is_abs_section (p->section->output_section))
5792 {
5793 /* Input section has been discarded, either because
5794 it is a copy of a linkonce section or due to
5795 linker script /DISCARD/, so we'll be discarding
5796 the relocs too. */
5797 }
5798 else if (p->count != 0)
5799 {
5800 srel = elf_section_data (p->section)->sreloc;
eea6121a 5801 srel->size += p->count * sizeof (Elf32_External_Rel);
5e681ec4
PB		 5802 if ((p->section->output_section->flags & SEC_READONLY) != 0)
5803 info->flags |= DF_TEXTREL;
5804 }
5805 }
5806 }
5807
5808 local_got = elf_local_got_refcounts (ibfd);
5809 if (!local_got)
5810 continue;
5811
5812 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
5813 locsymcount = symtab_hdr->sh_info;
5814 end_local_got = local_got + locsymcount;
ba93b8ac 5815 local_tls_type = elf32_arm_local_got_tls_type (ibfd);
5e681ec4
PB		 5816 s = htab->sgot;
5817 srel = htab->srelgot;
5818 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
5819 {
5820 if (*local_got > 0)
5821 {
eea6121a 5822 *local_got = s->size;
ba93b8ac
DJ		 5823 if (*local_tls_type & GOT_TLS_GD)
5824 /* TLS_GD relocs need an 8-byte structure in the GOT. */
5825 s->size += 8;
5826 if (*local_tls_type & GOT_TLS_IE)
5827 s->size += 4;
5828 if (*local_tls_type == GOT_NORMAL)
5829 s->size += 4;
5830
5831 if (info->shared || *local_tls_type == GOT_TLS_GD)
eea6121a 5832 srel->size += sizeof (Elf32_External_Rel);
5e681ec4
PB		 5833 }
5834 else
5835 *local_got = (bfd_vma) -1;
5836 }
252b5132
RH		 5837 }
5838
ba93b8ac
DJ		 5839 if (htab->tls_ldm_got.refcount > 0)
5840 {
5841 /* Allocate two GOT entries and one dynamic relocation (if necessary)
5842 for R_ARM_TLS_LDM32 relocations. */
5843 htab->tls_ldm_got.offset = htab->sgot->size;
5844 htab->sgot->size += 8;
5845 if (info->shared)
5846 htab->srelgot->size += sizeof (Elf32_External_Rel);
5847 }
5848 else
5849 htab->tls_ldm_got.offset = -1;
5850
5e681ec4
PB		 5851 /* Allocate global sym .plt and .got entries, and space for global
5852 sym dynamic relocs. */
57e8b36a 5853 elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info);
252b5132
RH		 5854
5855 /* The check_relocs and adjust_dynamic_symbol entry points have
5856 determined the sizes of the various dynamic sections. Allocate
5857 memory for them. */
b34976b6
AM		 5858 plt = FALSE;
5859 relocs = FALSE;
252b5132
RH		 5860 for (s = dynobj->sections; s != NULL; s = s->next)
5861 {
5862 const char * name;
252b5132
RH		 5863
5864 if ((s->flags & SEC_LINKER_CREATED) == 0)
5865 continue;
5866
5867 /* It's OK to base decisions on the section name, because none
5868 of the dynobj section names depend upon the input files. */
5869 name = bfd_get_section_name (dynobj, s);
5870
24a1ba0f 5871 if (strcmp (name, ".plt") == 0)
252b5132 5872 {
c456f082
AM		 5873 /* Remember whether there is a PLT. */
5874 plt = s->size != 0;
252b5132
RH		 5875 }
5876 else if (strncmp (name, ".rel", 4) == 0)
5877 {
c456f082 5878 if (s->size != 0)
252b5132 5879 {
252b5132
RH		 5880 /* Remember whether there are any reloc sections other
5881 than .rel.plt. */
5882 if (strcmp (name, ".rel.plt") != 0)
b34976b6 5883 relocs = TRUE;
252b5132
RH		 5884
5885 /* We use the reloc_count field as a counter if we need
5886 to copy relocs into the output file. */
5887 s->reloc_count = 0;
5888 }
5889 }
c456f082
AM		 5890 else if (strncmp (name, ".got", 4) != 0
5891 && strcmp (name, ".dynbss") != 0)
252b5132
RH		 5892 {
5893 /* It's not one of our sections, so don't allocate space. */
5894 continue;
5895 }
5896
c456f082 5897 if (s->size == 0)
252b5132 5898 {
c456f082
AM		 5899 /* If we don't need this section, strip it from the
5900 output file. This is mostly to handle .rel.bss and
5901 .rel.plt. We must create both sections in
5902 create_dynamic_sections, because they must be created
5903 before the linker maps input sections to output
5904 sections. The linker does that before
5905 adjust_dynamic_symbol is called, and it is that
5906 function which decides whether anything needs to go
5907 into these sections. */
8423293d 5908 s->flags |= SEC_EXCLUDE;
252b5132
RH		 5909 continue;
5910 }
5911
c456f082
AM		 5912 if ((s->flags & SEC_HAS_CONTENTS) == 0)
5913 continue;
5914
252b5132 5915 /* Allocate memory for the section contents. */
eea6121a 5916 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c456f082 5917 if (s->contents == NULL)
b34976b6 5918 return FALSE;
252b5132
RH		 5919 }
5920
5921 if (elf_hash_table (info)->dynamic_sections_created)
5922 {
5923 /* Add some entries to the .dynamic section. We fill in the
5924 values later, in elf32_arm_finish_dynamic_sections, but we
5925 must add the entries now so that we get the correct size for
5926 the .dynamic section. The DT_DEBUG entry is filled in by the
5927 dynamic linker and used by the debugger. */
dc810e39 5928#define add_dynamic_entry(TAG, VAL) \
5a580b3a 5929 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 5930
8532796c 5931 if (info->executable)
252b5132 5932 {
dc810e39 5933 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 5934 return FALSE;
252b5132
RH		 5935 }
5936
5937 if (plt)
5938 {
dc810e39
AM		 5939 if ( !add_dynamic_entry (DT_PLTGOT, 0)
5940 || !add_dynamic_entry (DT_PLTRELSZ, 0)
5941 || !add_dynamic_entry (DT_PLTREL, DT_REL)
5942 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 5943 return FALSE;
252b5132
RH		 5944 }
5945
5946 if (relocs)
5947 {
dc810e39
AM		 5948 if ( !add_dynamic_entry (DT_REL, 0)
5949 || !add_dynamic_entry (DT_RELSZ, 0)
5950 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
b34976b6 5951 return FALSE;
252b5132
RH		 5952 }
5953
08d1f311
DJ		 5954 /* If any dynamic relocs apply to a read-only section,
5955 then we need a DT_TEXTREL entry. */
5956 if ((info->flags & DF_TEXTREL) == 0)
5957 elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs,
5958 (PTR) info);
5959
99e4ae17 5960 if ((info->flags & DF_TEXTREL) != 0)
252b5132 5961 {
dc810e39 5962 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 5963 return FALSE;
252b5132
RH		 5964 }
5965 }
8532796c 5966#undef add_dynamic_entry
252b5132 5967
b34976b6 5968 return TRUE;
252b5132
RH		 5969}
5970
252b5132
RH		 5971/* Finish up dynamic symbol handling. We set the contents of various
5972 dynamic sections here. */
5973
b34976b6 5974static bfd_boolean
57e8b36a
NC		 5975elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info,
5976 struct elf_link_hash_entry * h, Elf_Internal_Sym * sym)
252b5132
RH		 5977{
5978 bfd * dynobj;
e5a52504 5979 struct elf32_arm_link_hash_table *htab;
b7693d02 5980 struct elf32_arm_link_hash_entry *eh;
252b5132
RH		 5981
5982 dynobj = elf_hash_table (info)->dynobj;
e5a52504 5983 htab = elf32_arm_hash_table (info);
b7693d02 5984 eh = (struct elf32_arm_link_hash_entry *) h;
252b5132
RH		 5985
5986 if (h->plt.offset != (bfd_vma) -1)
5987 {
5988 asection * splt;
252b5132 5989 asection * srel;
e5a52504 5990 bfd_byte *loc;
24a1ba0f 5991 bfd_vma plt_index;
947216bf 5992 Elf_Internal_Rela rel;
252b5132
RH		 5993
5994 /* This symbol has an entry in the procedure linkage table. Set
5995 it up. */
5996
5997 BFD_ASSERT (h->dynindx != -1);
5998
5999 splt = bfd_get_section_by_name (dynobj, ".plt");
252b5132 6000 srel = bfd_get_section_by_name (dynobj, ".rel.plt");
e5a52504 6001 BFD_ASSERT (splt != NULL && srel != NULL);
252b5132 6002
e5a52504
MM		 6003 /* Fill in the entry in the procedure linkage table. */
6004 if (htab->symbian_p)
6005 {
6006 unsigned i;
6007 for (i = 0; i < htab->plt_entry_size / 4; ++i)
6008 bfd_put_32 (output_bfd,
6009 elf32_arm_symbian_plt_entry[i],
6010 splt->contents + h->plt.offset + 4 * i);
6011
6012 /* Fill in the entry in the .rel.plt section. */
2a1b9a48
MM		 6013 rel.r_offset = (splt->output_section->vma
6014 + splt->output_offset
e5a52504
MM		 6015 + h->plt.offset + 4 * (i - 1));
6016 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
b7693d02
DJ		 6017
6018 /* Get the index in the procedure linkage table which
6019 corresponds to this symbol. This is the index of this symbol
6020 in all the symbols for which we are making plt entries. The
6021 first entry in the procedure linkage table is reserved. */
6022 plt_index = ((h->plt.offset - htab->plt_header_size)
6023 / htab->plt_entry_size);
e5a52504
MM		 6024 }
6025 else
6026 {
6027 bfd_vma got_offset;
6028 bfd_vma got_displacement;
6029 asection * sgot;
6030
6031 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
6032 BFD_ASSERT (sgot != NULL);
6033
b7693d02
DJ		 6034 /* Get the offset into the .got.plt table of the entry that
6035 corresponds to this function. */
6036 got_offset = eh->plt_got_offset;
6037
6038 /* Get the index in the procedure linkage table which
6039 corresponds to this symbol. This is the index of this symbol
6040 in all the symbols for which we are making plt entries. The
6041 first three entries in .got.plt are reserved; after that
6042 symbols appear in the same order as in .plt. */
6043 plt_index = (got_offset - 12) / 4;
e5a52504
MM		 6044
6045 /* Calculate the displacement between the PLT slot and the
b7693d02
DJ		 6046 entry in the GOT. The eight-byte offset accounts for the
6047 value produced by adding to pc in the first instruction
6048 of the PLT stub. */
e5a52504
MM		 6049 got_displacement = (sgot->output_section->vma
6050 + sgot->output_offset
6051 + got_offset
6052 - splt->output_section->vma
6053 - splt->output_offset
6054 - h->plt.offset
6055 - 8);
5e681ec4 6056
e5a52504 6057 BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
5e681ec4 6058
33bfe774 6059 if (!htab->use_blx && eh->plt_thumb_refcount > 0)
b7693d02
DJ		 6060 {
6061 bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[0],
6062 splt->contents + h->plt.offset - 4);
6063 bfd_put_16 (output_bfd, elf32_arm_plt_thumb_stub[1],
6064 splt->contents + h->plt.offset - 2);
6065 }
6066
e5a52504
MM		 6067 bfd_put_32 (output_bfd, elf32_arm_plt_entry[0] | ((got_displacement & 0x0ff00000) >> 20),
6068 splt->contents + h->plt.offset + 0);
6069 bfd_put_32 (output_bfd, elf32_arm_plt_entry[1] | ((got_displacement & 0x000ff000) >> 12),
6070 splt->contents + h->plt.offset + 4);
6071 bfd_put_32 (output_bfd, elf32_arm_plt_entry[2] | (got_displacement & 0x00000fff),
6072 splt->contents + h->plt.offset + 8);
5e681ec4 6073#ifdef FOUR_WORD_PLT
e5a52504
MM		 6074 bfd_put_32 (output_bfd, elf32_arm_plt_entry[3],
6075 splt->contents + h->plt.offset + 12);
5e681ec4 6076#endif
252b5132 6077
e5a52504
MM		 6078 /* Fill in the entry in the global offset table. */
6079 bfd_put_32 (output_bfd,
6080 (splt->output_section->vma
6081 + splt->output_offset),
6082 sgot->contents + got_offset);
6083
6084 /* Fill in the entry in the .rel.plt section. */
6085 rel.r_offset = (sgot->output_section->vma
6086 + sgot->output_offset
6087 + got_offset);
6088 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
6089 }
57e8b36a 6090
947216bf
AM		 6091 loc = srel->contents + plt_index * sizeof (Elf32_External_Rel);
6092 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132 6093
f5385ebf 6094 if (!h->def_regular)
252b5132
RH		 6095 {
6096 /* Mark the symbol as undefined, rather than as defined in
6097 the .plt section. Leave the value alone. */
6098 sym->st_shndx = SHN_UNDEF;
d982ba73
PB		 6099 /* If the symbol is weak, we do need to clear the value.
6100 Otherwise, the PLT entry would provide a definition for
6101 the symbol even if the symbol wasn't defined anywhere,
6102 and so the symbol would never be NULL. */
f5385ebf 6103 if (!h->ref_regular_nonweak)
d982ba73 6104 sym->st_value = 0;
252b5132
RH		 6105 }
6106 }
6107
ba93b8ac
DJ		 6108 if (h->got.offset != (bfd_vma) -1
6109 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0
6110 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0)
252b5132
RH		 6111 {
6112 asection * sgot;
6113 asection * srel;
947216bf
AM		 6114 Elf_Internal_Rela rel;
6115 bfd_byte *loc;
252b5132
RH		 6116
6117 /* This symbol has an entry in the global offset table. Set it
6118 up. */
252b5132
RH		 6119 sgot = bfd_get_section_by_name (dynobj, ".got");
6120 srel = bfd_get_section_by_name (dynobj, ".rel.got");
6121 BFD_ASSERT (sgot != NULL && srel != NULL);
6122
6123 rel.r_offset = (sgot->output_section->vma
6124 + sgot->output_offset
dc810e39 6125 + (h->got.offset &~ (bfd_vma) 1));
252b5132 6126
5e681ec4
PB		 6127 /* If this is a static link, or it is a -Bsymbolic link and the
6128 symbol is defined locally or was forced to be local because
6129 of a version file, we just want to emit a RELATIVE reloc.
6130 The entry in the global offset table will already have been
6131 initialized in the relocate_section function. */
252b5132 6132 if (info->shared
5e681ec4
PB		 6133 && SYMBOL_REFERENCES_LOCAL (info, h))
6134 {
6135 BFD_ASSERT((h->got.offset & 1) != 0);
6136 rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
6137 }
252b5132
RH		 6138 else
6139 {
5e681ec4 6140 BFD_ASSERT((h->got.offset & 1) == 0);
252b5132
RH		 6141 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
6142 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
6143 }
6144
947216bf
AM		 6145 loc = srel->contents + srel->reloc_count++ * sizeof (Elf32_External_Rel);
6146 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 6147 }
6148
f5385ebf 6149 if (h->needs_copy)
252b5132
RH		 6150 {
6151 asection * s;
947216bf
AM		 6152 Elf_Internal_Rela rel;
6153 bfd_byte *loc;
252b5132
RH		 6154
6155 /* This symbol needs a copy reloc. Set it up. */
252b5132
RH		 6156 BFD_ASSERT (h->dynindx != -1
6157 && (h->root.type == bfd_link_hash_defined
6158 || h->root.type == bfd_link_hash_defweak));
6159
6160 s = bfd_get_section_by_name (h->root.u.def.section->owner,
6161 ".rel.bss");
6162 BFD_ASSERT (s != NULL);
6163
6164 rel.r_offset = (h->root.u.def.value
6165 + h->root.u.def.section->output_section->vma
6166 + h->root.u.def.section->output_offset);
6167 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
947216bf
AM		 6168 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rel);
6169 bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
252b5132
RH		 6170 }
6171
6172 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
6173 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
6174 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
6175 sym->st_shndx = SHN_ABS;
6176
b34976b6 6177 return TRUE;
252b5132
RH		 6178}
6179
6180/* Finish up the dynamic sections. */
6181
b34976b6 6182static bfd_boolean
57e8b36a 6183elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
252b5132
RH		 6184{
6185 bfd * dynobj;
6186 asection * sgot;
6187 asection * sdyn;
6188
6189 dynobj = elf_hash_table (info)->dynobj;
6190
6191 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
229fcec5 6192 BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL);
252b5132
RH		 6193 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
6194
6195 if (elf_hash_table (info)->dynamic_sections_created)
6196 {
6197 asection *splt;
6198 Elf32_External_Dyn *dyncon, *dynconend;
229fcec5 6199 struct elf32_arm_link_hash_table *htab;
252b5132 6200
229fcec5 6201 htab = elf32_arm_hash_table (info);
252b5132 6202 splt = bfd_get_section_by_name (dynobj, ".plt");
24a1ba0f 6203 BFD_ASSERT (splt != NULL && sdyn != NULL);
252b5132
RH		 6204
6205 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 6206 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9b485d32 6207
252b5132
RH		 6208 for (; dyncon < dynconend; dyncon++)
6209 {
6210 Elf_Internal_Dyn dyn;
6211 const char * name;
6212 asection * s;
6213
6214 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
6215
6216 switch (dyn.d_tag)
6217 {
229fcec5
MM		 6218 unsigned int type;
6219
252b5132
RH		 6220 default:
6221 break;
6222
229fcec5
MM		 6223 case DT_HASH:
6224 name = ".hash";
6225 goto get_vma_if_bpabi;
6226 case DT_STRTAB:
6227 name = ".dynstr";
6228 goto get_vma_if_bpabi;
6229 case DT_SYMTAB:
6230 name = ".dynsym";
6231 goto get_vma_if_bpabi;
c0042f5d
MM		 6232 case DT_VERSYM:
6233 name = ".gnu.version";
6234 goto get_vma_if_bpabi;
6235 case DT_VERDEF:
6236 name = ".gnu.version_d";
6237 goto get_vma_if_bpabi;
6238 case DT_VERNEED:
6239 name = ".gnu.version_r";
6240 goto get_vma_if_bpabi;
6241
252b5132
RH		 6242 case DT_PLTGOT:
6243 name = ".got";
6244 goto get_vma;
6245 case DT_JMPREL:
6246 name = ".rel.plt";
6247 get_vma:
6248 s = bfd_get_section_by_name (output_bfd, name);
6249 BFD_ASSERT (s != NULL);
229fcec5
MM		 6250 if (!htab->symbian_p)
6251 dyn.d_un.d_ptr = s->vma;
6252 else
6253 /* In the BPABI, tags in the PT_DYNAMIC section point
6254 at the file offset, not the memory address, for the
6255 convenience of the post linker. */
6256 dyn.d_un.d_ptr = s->filepos;
252b5132
RH		 6257 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6258 break;
6259
229fcec5
MM		 6260 get_vma_if_bpabi:
6261 if (htab->symbian_p)
6262 goto get_vma;
6263 break;
6264
252b5132
RH		 6265 case DT_PLTRELSZ:
6266 s = bfd_get_section_by_name (output_bfd, ".rel.plt");
6267 BFD_ASSERT (s != NULL);
eea6121a 6268 dyn.d_un.d_val = s->size;
252b5132
RH		 6269 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6270 break;
229fcec5 6271
252b5132 6272 case DT_RELSZ:
229fcec5
MM		 6273 if (!htab->symbian_p)
6274 {
6275 /* My reading of the SVR4 ABI indicates that the
6276 procedure linkage table relocs (DT_JMPREL) should be
6277 included in the overall relocs (DT_REL). This is
6278 what Solaris does. However, UnixWare can not handle
6279 that case. Therefore, we override the DT_RELSZ entry
6280 here to make it not include the JMPREL relocs. Since
6281 the linker script arranges for .rel.plt to follow all
6282 other relocation sections, we don't have to worry
6283 about changing the DT_REL entry. */
6284 s = bfd_get_section_by_name (output_bfd, ".rel.plt");
6285 if (s != NULL)
6286 dyn.d_un.d_val -= s->size;
6287 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6288 break;
6289 }
6290 /* Fall through */
6291
6292 case DT_REL:
6293 case DT_RELA:
6294 case DT_RELASZ:
6295 /* In the BPABI, the DT_REL tag must point at the file
6296 offset, not the VMA, of the first relocation
6297 section. So, we use code similar to that in
6298 elflink.c, but do not check for SHF_ALLOC on the
6299 relcoation section, since relocations sections are
6300 never allocated under the BPABI. The comments above
6301 about Unixware notwithstanding, we include all of the
6302 relocations here. */
6303 if (htab->symbian_p)
6304 {
6305 unsigned int i;
6306 type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
6307 ? SHT_REL : SHT_RELA);
6308 dyn.d_un.d_val = 0;
6309 for (i = 1; i < elf_numsections (output_bfd); i++)
6310 {
6311 Elf_Internal_Shdr *hdr
6312 = elf_elfsections (output_bfd)[i];
6313 if (hdr->sh_type == type)
6314 {
6315 if (dyn.d_tag == DT_RELSZ
6316 || dyn.d_tag == DT_RELASZ)
6317 dyn.d_un.d_val += hdr->sh_size;
de52dba4
AM		 6318 else if ((ufile_ptr) hdr->sh_offset
6319 <= dyn.d_un.d_val - 1)
229fcec5
MM		 6320 dyn.d_un.d_val = hdr->sh_offset;
6321 }
6322 }
6323 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6324 }
252b5132 6325 break;
88f7bcd5
NC		 6326
6327 /* Set the bottom bit of DT_INIT/FINI if the
6328 corresponding function is Thumb. */
6329 case DT_INIT:
6330 name = info->init_function;
6331 goto get_sym;
6332 case DT_FINI:
6333 name = info->fini_function;
6334 get_sym:
6335 /* If it wasn't set by elf_bfd_final_link
4cc11e76 6336 then there is nothing to adjust. */
88f7bcd5
NC		 6337 if (dyn.d_un.d_val != 0)
6338 {
6339 struct elf_link_hash_entry * eh;
6340
6341 eh = elf_link_hash_lookup (elf_hash_table (info), name,
b34976b6 6342 FALSE, FALSE, TRUE);
88f7bcd5
NC		 6343 if (eh != (struct elf_link_hash_entry *) NULL
6344 && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC)
6345 {
6346 dyn.d_un.d_val |= 1;
b34976b6 6347 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
88f7bcd5
NC		 6348 }
6349 }
6350 break;
252b5132
RH		 6351 }
6352 }
6353
24a1ba0f 6354 /* Fill in the first entry in the procedure linkage table. */
e5a52504 6355 if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size)
f7a74f8c 6356 {
5e681ec4
PB		 6357 bfd_vma got_displacement;
6358
6359 /* Calculate the displacement between the PLT slot and &GOT[0]. */
6360 got_displacement = (sgot->output_section->vma
6361 + sgot->output_offset
6362 - splt->output_section->vma
6363 - splt->output_offset
6364 - 16);
6365
f7a74f8c
NC		 6366 bfd_put_32 (output_bfd, elf32_arm_plt0_entry[0], splt->contents + 0);
6367 bfd_put_32 (output_bfd, elf32_arm_plt0_entry[1], splt->contents + 4);
6368 bfd_put_32 (output_bfd, elf32_arm_plt0_entry[2], splt->contents + 8);
6369 bfd_put_32 (output_bfd, elf32_arm_plt0_entry[3], splt->contents + 12);
5e681ec4
PB		 6370#ifdef FOUR_WORD_PLT
6371 /* The displacement value goes in the otherwise-unused last word of
6372 the second entry. */
6373 bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
6374#else
6375 bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
6376#endif
f7a74f8c 6377 }
252b5132
RH		 6378
6379 /* UnixWare sets the entsize of .plt to 4, although that doesn't
6380 really seem like the right value. */
6381 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
6382 }
6383
6384 /* Fill in the first three entries in the global offset table. */
229fcec5 6385 if (sgot)
252b5132 6386 {
229fcec5
MM		 6387 if (sgot->size > 0)
6388 {
6389 if (sdyn == NULL)
6390 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
6391 else
6392 bfd_put_32 (output_bfd,
6393 sdyn->output_section->vma + sdyn->output_offset,
6394 sgot->contents);
6395 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
6396 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
6397 }
252b5132 6398
229fcec5
MM		 6399 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
6400 }
252b5132 6401
b34976b6 6402 return TRUE;
252b5132
RH		 6403}
6404
ba96a88f 6405static void
57e8b36a 6406elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
ba96a88f 6407{
9b485d32 6408 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
e489d0ae 6409 struct elf32_arm_link_hash_table *globals;
ba96a88f
NC		 6410
6411 i_ehdrp = elf_elfheader (abfd);
6412
94a3258f
PB		 6413 if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
6414 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
6415 else
6416 i_ehdrp->e_ident[EI_OSABI] = 0;
ba96a88f 6417 i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
e489d0ae 6418
93204d3a
PB		 6419 if (link_info)
6420 {
6421 globals = elf32_arm_hash_table (link_info);
6422 if (globals->byteswap_code)
6423 i_ehdrp->e_flags |= EF_ARM_BE8;
6424 }
ba96a88f
NC		 6425}
6426
99e4ae17 6427static enum elf_reloc_type_class
57e8b36a 6428elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
99e4ae17 6429{
f51e552e 6430 switch ((int) ELF32_R_TYPE (rela->r_info))
99e4ae17
AJ		 6431 {
6432 case R_ARM_RELATIVE:
6433 return reloc_class_relative;
6434 case R_ARM_JUMP_SLOT:
6435 return reloc_class_plt;
6436 case R_ARM_COPY:
6437 return reloc_class_copy;
6438 default:
6439 return reloc_class_normal;
6440 }
6441}
6442
e16bb312
NC		 6443/* Set the right machine number for an Arm ELF file. */
6444
6445static bfd_boolean
57e8b36a 6446elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
e16bb312
NC		 6447{
6448 if (hdr->sh_type == SHT_NOTE)
6449 *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
6450
6451 return TRUE;
6452}
6453
e489d0ae 6454static void
57e8b36a 6455elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
e16bb312 6456{
5a6c6817 6457 bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
e16bb312
NC		 6458}
6459
40a18ebd
NC		 6460/* Return TRUE if this is an unwinding table entry. */
6461
6462static bfd_boolean
6463is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
6464{
6465 size_t len1, len2;
6466
6467 len1 = sizeof (ELF_STRING_ARM_unwind) - 1;
6468 len2 = sizeof (ELF_STRING_ARM_unwind_once) - 1;
6469 return (strncmp (name, ELF_STRING_ARM_unwind, len1) == 0
6470 || strncmp (name, ELF_STRING_ARM_unwind_once, len2) == 0);
6471}
6472
6473
6474/* Set the type and flags for an ARM section. We do this by
6475 the section name, which is a hack, but ought to work. */
6476
6477static bfd_boolean
6478elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
6479{
6480 const char * name;
6481
6482 name = bfd_get_section_name (abfd, sec);
6483
6484 if (is_arm_elf_unwind_section_name (abfd, name))
6485 {
6486 hdr->sh_type = SHT_ARM_EXIDX;
6487 hdr->sh_flags |= SHF_LINK_ORDER;
6488 }
6489 return TRUE;
6490}
6491
6dc132d9
L		 6492/* Handle an ARM specific section when reading an object file. This is
6493 called when bfd_section_from_shdr finds a section with an unknown
6494 type. */
40a18ebd
NC		 6495
6496static bfd_boolean
6497elf32_arm_section_from_shdr (bfd *abfd,
6498 Elf_Internal_Shdr * hdr,
6dc132d9
L		 6499 const char *name,
6500 int shindex)
40a18ebd
NC		 6501{
6502 /* There ought to be a place to keep ELF backend specific flags, but
6503 at the moment there isn't one. We just keep track of the
6504 sections by their name, instead. Fortunately, the ABI gives
6505 names for all the ARM specific sections, so we will probably get
6506 away with this. */
6507 switch (hdr->sh_type)
6508 {
6509 case SHT_ARM_EXIDX:
6510 break;
6511
6512 default:
6513 return FALSE;
6514 }
6515
6dc132d9 6516 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
40a18ebd
NC		 6517 return FALSE;
6518
6519 return TRUE;
6520}
e489d0ae 6521
8e3de13a
NC		 6522/* A structure used to record a list of sections, independently
6523 of the next and prev fields in the asection structure. */
6524typedef struct section_list
6525{
6526 asection * sec;
6527 struct section_list * next;
6528 struct section_list * prev;
6529}
6530section_list;
6531
6532/* Unfortunately we need to keep a list of sections for which
6533 an _arm_elf_section_data structure has been allocated. This
6534 is because it is possible for functions like elf32_arm_write_section
6535 to be called on a section which has had an elf_data_structure
6536 allocated for it (and so the used_by_bfd field is valid) but
6537 for which the ARM extended version of this structure - the
6538 _arm_elf_section_data structure - has not been allocated. */
6539static section_list * sections_with_arm_elf_section_data = NULL;
6540
6541static void
957c6e41 6542record_section_with_arm_elf_section_data (asection * sec)
8e3de13a
NC		 6543{
6544 struct section_list * entry;
6545
957c6e41 6546 entry = bfd_malloc (sizeof (* entry));
8e3de13a
NC		 6547 if (entry == NULL)
6548 return;
6549 entry->sec = sec;
6550 entry->next = sections_with_arm_elf_section_data;
6551 entry->prev = NULL;
6552 if (entry->next != NULL)
6553 entry->next->prev = entry;
6554 sections_with_arm_elf_section_data = entry;
6555}
6556
6557static _arm_elf_section_data *
6558get_arm_elf_section_data (asection * sec)
6559{
6560 struct section_list * entry;
6561
6562 for (entry = sections_with_arm_elf_section_data; entry; entry = entry->next)
6563 if (entry->sec == sec)
6564 return elf32_arm_section_data (sec);
6565 return NULL;
6566}
6567
6568static void
6569unrecord_section_with_arm_elf_section_data (asection * sec)
6570{
6571 struct section_list * entry;
6572
6573 for (entry = sections_with_arm_elf_section_data; entry; entry = entry->next)
6574 if (entry->sec == sec)
6575 {
6576 if (entry->prev != NULL)
6577 entry->prev->next = entry->next;
6578 if (entry->next != NULL)
6579 entry->next->prev = entry->prev;
6580 if (entry == sections_with_arm_elf_section_data)
6581 sections_with_arm_elf_section_data = entry->next;
6582 free (entry);
6583 break;
6584 }
6585}
6586
e489d0ae
PB		 6587/* Called for each symbol. Builds a section map based on mapping symbols.
6588 Does not alter any of the symbols. */
6589
6590static bfd_boolean
6591elf32_arm_output_symbol_hook (struct bfd_link_info *info,
6592 const char *name,
6593 Elf_Internal_Sym *elfsym,
6594 asection *input_sec,
6595 struct elf_link_hash_entry *h ATTRIBUTE_UNUSED)
6596{
6597 int mapcount;
6598 elf32_arm_section_map *map;
8e3de13a
NC		 6599 elf32_arm_section_map *newmap;
6600 _arm_elf_section_data *arm_data;
e489d0ae
PB		 6601 struct elf32_arm_link_hash_table *globals;
6602
6603 /* Only do this on final link. */
6604 if (info->relocatable)
6605 return TRUE;
6606
6607 /* Only build a map if we need to byteswap code. */
6608 globals = elf32_arm_hash_table (info);
6609 if (!globals->byteswap_code)
6610 return TRUE;
6611
6612 /* We only want mapping symbols. */
05ea83ed 6613 if (! bfd_is_arm_mapping_symbol_name (name))
e489d0ae
PB		 6614 return TRUE;
6615
8e3de13a
NC		 6616 /* If this section has not been allocated an _arm_elf_section_data
6617 structure then we cannot record anything. */
6618 arm_data = get_arm_elf_section_data (input_sec);
6619 if (arm_data == NULL)
6620 return TRUE;
6621
6622 mapcount = arm_data->mapcount + 1;
6623 map = arm_data->map;
e489d0ae
PB		 6624 /* TODO: This may be inefficient, but we probably don't usually have many
6625 mapping symbols per section. */
8e3de13a
NC		 6626 newmap = bfd_realloc (map, mapcount * sizeof (* map));
6627 if (newmap != NULL)
6628 {
6629 arm_data->map = newmap;
6630 arm_data->mapcount = mapcount;
6631
6632 map[mapcount - 1].vma = elfsym->st_value;
6633 map[mapcount - 1].type = name[1];
6634 }
57e8b36a 6635
e489d0ae
PB		 6636 return TRUE;
6637}
6638
e489d0ae
PB		 6639/* Allocate target specific section data. */
6640
6641static bfd_boolean
6642elf32_arm_new_section_hook (bfd *abfd, asection *sec)
6643{
8e3de13a 6644 _arm_elf_section_data *sdata;
e489d0ae
PB		 6645 bfd_size_type amt = sizeof (*sdata);
6646
6647 sdata = bfd_zalloc (abfd, amt);
6648 if (sdata == NULL)
6649 return FALSE;
6650 sec->used_by_bfd = sdata;
6651
957c6e41 6652 record_section_with_arm_elf_section_data (sec);
8e3de13a 6653
e489d0ae
PB		 6654 return _bfd_elf_new_section_hook (abfd, sec);
6655}
6656
6657
6658/* Used to order a list of mapping symbols by address. */
6659
6660static int
6661elf32_arm_compare_mapping (const void * a, const void * b)
6662{
6663 return ((const elf32_arm_section_map *) a)->vma
6664 > ((const elf32_arm_section_map *) b)->vma;
6665}
6666
6667
6668/* Do code byteswapping. Return FALSE afterwards so that the section is
6669 written out as normal. */
6670
6671static bfd_boolean
6672elf32_arm_write_section (bfd *output_bfd ATTRIBUTE_UNUSED, asection *sec,
6673 bfd_byte *contents)
6674{
6675 int mapcount;
8e3de13a 6676 _arm_elf_section_data *arm_data;
e489d0ae
PB		 6677 elf32_arm_section_map *map;
6678 bfd_vma ptr;
6679 bfd_vma end;
6680 bfd_vma offset;
6681 bfd_byte tmp;
6682 int i;
57e8b36a 6683
8e3de13a
NC		 6684 /* If this section has not been allocated an _arm_elf_section_data
6685 structure then we cannot record anything. */
6686 arm_data = get_arm_elf_section_data (sec);
6687 if (arm_data == NULL)
6688 return FALSE;
6689
6690 mapcount = arm_data->mapcount;
6691 map = arm_data->map;
e489d0ae
PB		 6692
6693 if (mapcount == 0)
6694 return FALSE;
6695
8e3de13a 6696 qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
e489d0ae
PB		 6697
6698 offset = sec->output_section->vma + sec->output_offset;
6699 ptr = map[0].vma - offset;
6700 for (i = 0; i < mapcount; i++)
6701 {
6702 if (i == mapcount - 1)
eea6121a 6703 end = sec->size;
e489d0ae
PB		 6704 else
6705 end = map[i + 1].vma - offset;
57e8b36a 6706
e489d0ae
PB		 6707 switch (map[i].type)
6708 {
6709 case 'a':
6710 /* Byte swap code words. */
6711 while (ptr + 3 < end)
6712 {
6713 tmp = contents[ptr];
6714 contents[ptr] = contents[ptr + 3];
6715 contents[ptr + 3] = tmp;
6716 tmp = contents[ptr + 1];
6717 contents[ptr + 1] = contents[ptr + 2];
6718 contents[ptr + 2] = tmp;
6719 ptr += 4;
6720 }
6721 break;
6722
6723 case 't':
6724 /* Byte swap code halfwords. */
6725 while (ptr + 1 < end)
6726 {
6727 tmp = contents[ptr];
6728 contents[ptr] = contents[ptr + 1];
6729 contents[ptr + 1] = tmp;
6730 ptr += 2;
6731 }
6732 break;
6733
6734 case 'd':
6735 /* Leave data alone. */
6736 break;
6737 }
6738 ptr = end;
6739 }
8e3de13a 6740
93204d3a 6741 free (map);
8e3de13a
NC		 6742 arm_data->mapcount = 0;
6743 arm_data->map = NULL;
6744 unrecord_section_with_arm_elf_section_data (sec);
6745
e489d0ae
PB		 6746 return FALSE;
6747}
6748
957c6e41
NC		 6749static void
6750unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED,
6751 asection * sec,
6752 void * ignore ATTRIBUTE_UNUSED)
6753{
6754 unrecord_section_with_arm_elf_section_data (sec);
6755}
6756
6757static bfd_boolean
6758elf32_arm_close_and_cleanup (bfd * abfd)
6759{
6760 bfd_map_over_sections (abfd, unrecord_section_via_map_over_sections, NULL);
6761
6762 return _bfd_elf_close_and_cleanup (abfd);
6763}
6764
b7693d02
DJ		 6765/* Display STT_ARM_TFUNC symbols as functions. */
6766
6767static void
6768elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
6769 asymbol *asym)
6770{
6771 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
6772
6773 if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC)
6774 elfsym->symbol.flags |= BSF_FUNCTION;
6775}
6776
0beaef2b
PB		 6777
6778/* Mangle thumb function symbols as we read them in. */
6779
6780static void
6781elf32_arm_swap_symbol_in (bfd * abfd,
6782 const void *psrc,
6783 const void *pshn,
6784 Elf_Internal_Sym *dst)
6785{
6786 bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst);
6787
6788 /* New EABI objects mark thumb function symbols by setting the low bit of
6789 the address. Turn these into STT_ARM_TFUNC. */
6790 if (ELF_ST_TYPE (dst->st_info) == STT_FUNC
6791 && (dst->st_value & 1))
6792 {
6793 dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
6794 dst->st_value &= ~(bfd_vma) 1;
6795 }
6796}
6797
6798
6799/* Mangle thumb function symbols as we write them out. */
6800
6801static void
6802elf32_arm_swap_symbol_out (bfd *abfd,
6803 const Elf_Internal_Sym *src,
6804 void *cdst,
6805 void *shndx)
6806{
6807 Elf_Internal_Sym newsym;
6808
6809 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
6810 of the address set, as per the new EABI. We do this unconditionally
6811 because objcopy does not set the elf header flags until after
6812 it writes out the symbol table. */
6813 if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC)
6814 {
6815 newsym = *src;
6816 newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
6817 newsym.st_value |= 1;
6818
6819 src = &newsym;
6820 }
6821 bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
6822}
6823
b294bdf8
MM		 6824/* Add the PT_ARM_EXIDX program header. */
6825
6826static bfd_boolean
6827elf32_arm_modify_segment_map (bfd *abfd,
6828 struct bfd_link_info *info ATTRIBUTE_UNUSED)
6829{
6830 struct elf_segment_map *m;
6831 asection *sec;
6832
6833 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
6834 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
6835 {
6836 /* If there is already a PT_ARM_EXIDX header, then we do not
6837 want to add another one. This situation arises when running
6838 "strip"; the input binary already has the header. */
6839 m = elf_tdata (abfd)->segment_map;
6840 while (m && m->p_type != PT_ARM_EXIDX)
6841 m = m->next;
6842 if (!m)
6843 {
6844 m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
6845 if (m == NULL)
6846 return FALSE;
6847 m->p_type = PT_ARM_EXIDX;
6848 m->count = 1;
6849 m->sections[0] = sec;
6850
6851 m->next = elf_tdata (abfd)->segment_map;
6852 elf_tdata (abfd)->segment_map = m;
6853 }
6854 }
6855
6856 return TRUE;
6857}
6858
6859/* We may add a PT_ARM_EXIDX program header. */
6860
6861static int
6862elf32_arm_additional_program_headers (bfd *abfd)
6863{
6864 asection *sec;
6865
6866 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
6867 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
6868 return 1;
6869 else
6870 return 0;
6871}
6872
0beaef2b
PB		 6873/* We use this to override swap_symbol_in and swap_symbol_out. */
6874const struct elf_size_info elf32_arm_size_info = {
6875 sizeof (Elf32_External_Ehdr),
6876 sizeof (Elf32_External_Phdr),
6877 sizeof (Elf32_External_Shdr),
6878 sizeof (Elf32_External_Rel),
6879 sizeof (Elf32_External_Rela),
6880 sizeof (Elf32_External_Sym),
6881 sizeof (Elf32_External_Dyn),
6882 sizeof (Elf_External_Note),
6883 4,
6884 1,
6885 32, 2,
6886 ELFCLASS32, EV_CURRENT,
6887 bfd_elf32_write_out_phdrs,
6888 bfd_elf32_write_shdrs_and_ehdr,
6889 bfd_elf32_write_relocs,
6890 elf32_arm_swap_symbol_in,
6891 elf32_arm_swap_symbol_out,
6892 bfd_elf32_slurp_reloc_table,
6893 bfd_elf32_slurp_symbol_table,
6894 bfd_elf32_swap_dyn_in,
6895 bfd_elf32_swap_dyn_out,
6896 bfd_elf32_swap_reloc_in,
6897 bfd_elf32_swap_reloc_out,
6898 bfd_elf32_swap_reloca_in,
6899 bfd_elf32_swap_reloca_out
6900};
6901
252b5132
RH		 6902#define ELF_ARCH bfd_arch_arm
6903#define ELF_MACHINE_CODE EM_ARM
d0facd1b
NC		 6904#ifdef __QNXTARGET__
6905#define ELF_MAXPAGESIZE 0x1000
6906#else
f21f3fe0 6907#define ELF_MAXPAGESIZE 0x8000
d0facd1b 6908#endif
b1342370 6909#define ELF_MINPAGESIZE 0x1000
252b5132 6910
ba93b8ac
DJ		 6911#define bfd_elf32_mkobject elf32_arm_mkobject
6912
99e4ae17
AJ		 6913#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
6914#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
252b5132
RH		 6915#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
6916#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
6917#define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
dc810e39 6918#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
252b5132 6919#define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
4ab527b0 6920#define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
e489d0ae 6921#define bfd_elf32_new_section_hook elf32_arm_new_section_hook
3c9458e9 6922#define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
957c6e41 6923#define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
252b5132
RH		 6924
6925#define elf_backend_get_symbol_type elf32_arm_get_symbol_type
6926#define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
6927#define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
6928#define elf_backend_check_relocs elf32_arm_check_relocs
dc810e39 6929#define elf_backend_relocate_section elf32_arm_relocate_section
e489d0ae 6930#define elf_backend_write_section elf32_arm_write_section
252b5132 6931#define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
5e681ec4 6932#define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
252b5132
RH		 6933#define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
6934#define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
e489d0ae 6935#define elf_backend_link_output_symbol_hook elf32_arm_output_symbol_hook
252b5132 6936#define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
ba96a88f 6937#define elf_backend_post_process_headers elf32_arm_post_process_headers
99e4ae17 6938#define elf_backend_reloc_type_class elf32_arm_reloc_type_class
c178919b 6939#define elf_backend_object_p elf32_arm_object_p
e16bb312 6940#define elf_backend_section_flags elf32_arm_section_flags
40a18ebd
NC		 6941#define elf_backend_fake_sections elf32_arm_fake_sections
6942#define elf_backend_section_from_shdr elf32_arm_section_from_shdr
e16bb312 6943#define elf_backend_final_write_processing elf32_arm_final_write_processing
5e681ec4 6944#define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
b7693d02 6945#define elf_backend_symbol_processing elf32_arm_symbol_processing
0beaef2b 6946#define elf_backend_size_info elf32_arm_size_info
b294bdf8
MM		 6947#define elf_backend_modify_segment_map elf32_arm_modify_segment_map
6948#define elf_backend_additional_program_headers \
6949 elf32_arm_additional_program_headers
252b5132 6950
5e681ec4 6951#define elf_backend_can_refcount 1
252b5132
RH		 6952#define elf_backend_can_gc_sections 1
6953#define elf_backend_plt_readonly 1
6954#define elf_backend_want_got_plt 1
6955#define elf_backend_want_plt_sym 0
4e7fd91e
PB		 6956#define elf_backend_may_use_rel_p 1
6957#define elf_backend_may_use_rela_p 0
6958#define elf_backend_default_use_rela_p 0
6959#define elf_backend_rela_normal 0
252b5132 6960
04f7c78d 6961#define elf_backend_got_header_size 12
04f7c78d 6962
252b5132 6963#include "elf32-target.h"
7f266840 6964
4e7fd91e
PB		 6965/* VxWorks Targets */
6966
6967#undef TARGET_LITTLE_SYM
6968#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
6969#undef TARGET_LITTLE_NAME
6970#define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
6971#undef TARGET_BIG_SYM
6972#define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
6973#undef TARGET_BIG_NAME
6974#define TARGET_BIG_NAME "elf32-bigarm-vxworks"
6975
6976/* Like elf32_arm_link_hash_table_create -- but overrides
6977 appropriately for VxWorks. */
6978static struct bfd_link_hash_table *
6979elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
6980{
6981 struct bfd_link_hash_table *ret;
6982
6983 ret = elf32_arm_link_hash_table_create (abfd);
6984 if (ret)
6985 {
6986 struct elf32_arm_link_hash_table *htab
6987 = (struct elf32_arm_link_hash_table *)ret;
6988 htab->use_rel = 0;
6989 }
6990 return ret;
6991}
6992
6993#undef elf32_bed
6994#define elf32_bed elf32_arm_vxworks_bed
6995
6996#undef bfd_elf32_bfd_link_hash_table_create
6997#define bfd_elf32_bfd_link_hash_table_create \
6998 elf32_arm_vxworks_link_hash_table_create
6999
7000#undef elf_backend_may_use_rel_p
7001#define elf_backend_may_use_rel_p 0
7002#undef elf_backend_may_use_rela_p
7003#define elf_backend_may_use_rela_p 1
7004#undef elf_backend_default_use_rela_p
7005#define elf_backend_default_use_rela_p 1
7006#undef elf_backend_rela_normal
7007#define elf_backend_rela_normal 1
7008
7009#include "elf32-target.h"
7010
7011
7f266840
DJ		 7012/* Symbian OS Targets */
7013
7014#undef TARGET_LITTLE_SYM
7015#define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
7016#undef TARGET_LITTLE_NAME
7017#define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
7018#undef TARGET_BIG_SYM
7019#define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
7020#undef TARGET_BIG_NAME
7021#define TARGET_BIG_NAME "elf32-bigarm-symbian"
7022
7023/* Like elf32_arm_link_hash_table_create -- but overrides
7024 appropriately for Symbian OS. */
7025static struct bfd_link_hash_table *
7026elf32_arm_symbian_link_hash_table_create (bfd *abfd)
7027{
7028 struct bfd_link_hash_table *ret;
7029
7030 ret = elf32_arm_link_hash_table_create (abfd);
7031 if (ret)
7032 {
7033 struct elf32_arm_link_hash_table *htab
7034 = (struct elf32_arm_link_hash_table *)ret;
7035 /* There is no PLT header for Symbian OS. */
7036 htab->plt_header_size = 0;
7037 /* The PLT entries are each three instructions. */
7038 htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry);
7039 htab->symbian_p = 1;
33bfe774
JB		 7040 /* Symbian uses armv5t or above, so use_blx is always true. */
7041 htab->use_blx = 1;
67687978 7042 htab->root.is_relocatable_executable = 1;
7f266840
DJ		 7043 }
7044 return ret;
7045}
7046
b35d266b 7047static const struct bfd_elf_special_section
551b43fd 7048elf32_arm_symbian_special_sections[] =
7f266840 7049{
5cd3778d
MM		 7050 /* In a BPABI executable, the dynamic linking sections do not go in
7051 the loadable read-only segment. The post-linker may wish to
7052 refer to these sections, but they are not part of the final
7053 program image. */
7f266840
DJ		 7054 { ".dynamic", 8, 0, SHT_DYNAMIC, 0 },
7055 { ".dynstr", 7, 0, SHT_STRTAB, 0 },
7056 { ".dynsym", 7, 0, SHT_DYNSYM, 0 },
7057 { ".got", 4, 0, SHT_PROGBITS, 0 },
7058 { ".hash", 5, 0, SHT_HASH, 0 },
5cd3778d
MM		 7059 /* These sections do not need to be writable as the SymbianOS
7060 postlinker will arrange things so that no dynamic relocation is
7061 required. */
7062 { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC },
7063 { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC },
7064 { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
7f266840
DJ		 7065 { NULL, 0, 0, 0, 0 }
7066};
7067
c3c76620 7068static void
b34af79c
MM		 7069elf32_arm_symbian_begin_write_processing (bfd *abfd,
7070 struct bfd_link_info *link_info
7071 ATTRIBUTE_UNUSED)
c3c76620
MM		 7072{
7073 /* BPABI objects are never loaded directly by an OS kernel; they are
7074 processed by a postlinker first, into an OS-specific format. If
7075 the D_PAGED bit is set on the file, BFD will align segments on
7076 page boundaries, so that an OS can directly map the file. With
7077 BPABI objects, that just results in wasted space. In addition,
7078 because we clear the D_PAGED bit, map_sections_to_segments will
7079 recognize that the program headers should not be mapped into any
7080 loadable segment. */
7081 abfd->flags &= ~D_PAGED;
7082}
7f266840
DJ		 7083
7084static bfd_boolean
b34af79c 7085elf32_arm_symbian_modify_segment_map (bfd *abfd,
b294bdf8 7086 struct bfd_link_info *info)
7f266840
DJ		 7087{
7088 struct elf_segment_map *m;
7089 asection *dynsec;
7090
7f266840
DJ		 7091 /* BPABI shared libraries and executables should have a PT_DYNAMIC
7092 segment. However, because the .dynamic section is not marked
7093 with SEC_LOAD, the generic ELF code will not create such a
7094 segment. */
7095 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
7096 if (dynsec)
7097 {
7098 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
7099 m->next = elf_tdata (abfd)->segment_map;
7100 elf_tdata (abfd)->segment_map = m;
7101 }
7102
b294bdf8
MM		 7103 /* Also call the generic arm routine. */
7104 return elf32_arm_modify_segment_map (abfd, info);
7f266840
DJ		 7105}
7106
7107#undef elf32_bed
7108#define elf32_bed elf32_arm_symbian_bed
7109
7110/* The dynamic sections are not allocated on SymbianOS; the postlinker
7111 will process them and then discard them. */
7112#undef ELF_DYNAMIC_SEC_FLAGS
7113#define ELF_DYNAMIC_SEC_FLAGS \
7114 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
7115
7116#undef bfd_elf32_bfd_link_hash_table_create
7117#define bfd_elf32_bfd_link_hash_table_create \
7118 elf32_arm_symbian_link_hash_table_create
7119
29ef7005
L		 7120#undef elf_backend_special_sections
7121#define elf_backend_special_sections elf32_arm_symbian_special_sections
7f266840 7122
c3c76620
MM		 7123#undef elf_backend_begin_write_processing
7124#define elf_backend_begin_write_processing \
7125 elf32_arm_symbian_begin_write_processing
7126
7f266840
DJ		 7127#undef elf_backend_modify_segment_map
7128#define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
7129
7130/* There is no .got section for BPABI objects, and hence no header. */
7131#undef elf_backend_got_header_size
7132#define elf_backend_got_header_size 0
7133
7134/* Similarly, there is no .got.plt section. */
7135#undef elf_backend_want_got_plt
7136#define elf_backend_want_got_plt 0
7137
4e7fd91e
PB		 7138#undef elf_backend_may_use_rel_p
7139#define elf_backend_may_use_rel_p 1
7140#undef elf_backend_may_use_rela_p
7141#define elf_backend_may_use_rela_p 0
7142#undef elf_backend_default_use_rela_p
dc4c9c19 7143#define elf_backend_default_use_rela_p 0
4e7fd91e
PB		 7144#undef elf_backend_rela_normal
7145#define elf_backend_rela_normal 0
7146
7f266840 7147#include "elf32-target.h"
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