2008-11-20 Tristan Gingold <gingold@adacore.com>
[deliverable/binutils-gdb.git] / bfd / elf32-arm.c
CommitLineData
252b5132 1/* 32-bit ELF support for ARM
e44a2c9c
AM
2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
3 2008 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
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
252b5132
RH
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
cd123cb7
NC
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
252b5132 21
7f266840 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
00a97672 24#include "libiberty.h"
7f266840
DJ
25#include "libbfd.h"
26#include "elf-bfd.h"
00a97672 27#include "elf-vxworks.h"
ee065d83 28#include "elf/arm.h"
7f266840 29
00a97672
RS
30/* Return the relocation section associated with NAME. HTAB is the
31 bfd's elf32_arm_link_hash_entry. */
32#define RELOC_SECTION(HTAB, NAME) \
33 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
34
35/* Return size of a relocation entry. HTAB is the bfd's
36 elf32_arm_link_hash_entry. */
37#define RELOC_SIZE(HTAB) \
38 ((HTAB)->use_rel \
39 ? sizeof (Elf32_External_Rel) \
40 : sizeof (Elf32_External_Rela))
41
42/* Return function to swap relocations in. HTAB is the bfd's
43 elf32_arm_link_hash_entry. */
44#define SWAP_RELOC_IN(HTAB) \
45 ((HTAB)->use_rel \
46 ? bfd_elf32_swap_reloc_in \
47 : bfd_elf32_swap_reloca_in)
48
49/* Return function to swap relocations out. HTAB is the bfd's
50 elf32_arm_link_hash_entry. */
51#define SWAP_RELOC_OUT(HTAB) \
52 ((HTAB)->use_rel \
53 ? bfd_elf32_swap_reloc_out \
54 : bfd_elf32_swap_reloca_out)
55
7f266840
DJ
56#define elf_info_to_howto 0
57#define elf_info_to_howto_rel elf32_arm_info_to_howto
58
59#define ARM_ELF_ABI_VERSION 0
60#define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
61
24718e3b 62static struct elf_backend_data elf32_arm_vxworks_bed;
00a97672 63
7f266840
DJ
64/* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
65 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
66 in that slot. */
67
c19d1205 68static reloc_howto_type elf32_arm_howto_table_1[] =
7f266840 69{
8029a119 70 /* No relocation. */
7f266840
DJ
71 HOWTO (R_ARM_NONE, /* type */
72 0, /* rightshift */
73 0, /* size (0 = byte, 1 = short, 2 = long) */
74 0, /* bitsize */
75 FALSE, /* pc_relative */
76 0, /* bitpos */
77 complain_overflow_dont,/* complain_on_overflow */
78 bfd_elf_generic_reloc, /* special_function */
79 "R_ARM_NONE", /* name */
80 FALSE, /* partial_inplace */
81 0, /* src_mask */
82 0, /* dst_mask */
83 FALSE), /* pcrel_offset */
84
85 HOWTO (R_ARM_PC24, /* type */
86 2, /* rightshift */
87 2, /* size (0 = byte, 1 = short, 2 = long) */
88 24, /* bitsize */
89 TRUE, /* pc_relative */
90 0, /* bitpos */
91 complain_overflow_signed,/* complain_on_overflow */
92 bfd_elf_generic_reloc, /* special_function */
93 "R_ARM_PC24", /* name */
94 FALSE, /* partial_inplace */
95 0x00ffffff, /* src_mask */
96 0x00ffffff, /* dst_mask */
97 TRUE), /* pcrel_offset */
98
99 /* 32 bit absolute */
100 HOWTO (R_ARM_ABS32, /* type */
101 0, /* rightshift */
102 2, /* size (0 = byte, 1 = short, 2 = long) */
103 32, /* bitsize */
104 FALSE, /* pc_relative */
105 0, /* bitpos */
106 complain_overflow_bitfield,/* complain_on_overflow */
107 bfd_elf_generic_reloc, /* special_function */
108 "R_ARM_ABS32", /* name */
109 FALSE, /* partial_inplace */
110 0xffffffff, /* src_mask */
111 0xffffffff, /* dst_mask */
112 FALSE), /* pcrel_offset */
113
114 /* standard 32bit pc-relative reloc */
115 HOWTO (R_ARM_REL32, /* type */
116 0, /* rightshift */
117 2, /* size (0 = byte, 1 = short, 2 = long) */
118 32, /* bitsize */
119 TRUE, /* pc_relative */
120 0, /* bitpos */
121 complain_overflow_bitfield,/* complain_on_overflow */
122 bfd_elf_generic_reloc, /* special_function */
123 "R_ARM_REL32", /* name */
124 FALSE, /* partial_inplace */
125 0xffffffff, /* src_mask */
126 0xffffffff, /* dst_mask */
127 TRUE), /* pcrel_offset */
128
c19d1205 129 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
4962c51a 130 HOWTO (R_ARM_LDR_PC_G0, /* type */
7f266840
DJ
131 0, /* rightshift */
132 0, /* size (0 = byte, 1 = short, 2 = long) */
4962c51a
MS
133 32, /* bitsize */
134 TRUE, /* pc_relative */
7f266840 135 0, /* bitpos */
4962c51a 136 complain_overflow_dont,/* complain_on_overflow */
7f266840 137 bfd_elf_generic_reloc, /* special_function */
4962c51a 138 "R_ARM_LDR_PC_G0", /* name */
7f266840 139 FALSE, /* partial_inplace */
4962c51a
MS
140 0xffffffff, /* src_mask */
141 0xffffffff, /* dst_mask */
142 TRUE), /* pcrel_offset */
7f266840
DJ
143
144 /* 16 bit absolute */
145 HOWTO (R_ARM_ABS16, /* type */
146 0, /* rightshift */
147 1, /* size (0 = byte, 1 = short, 2 = long) */
148 16, /* bitsize */
149 FALSE, /* pc_relative */
150 0, /* bitpos */
151 complain_overflow_bitfield,/* complain_on_overflow */
152 bfd_elf_generic_reloc, /* special_function */
153 "R_ARM_ABS16", /* name */
154 FALSE, /* partial_inplace */
155 0x0000ffff, /* src_mask */
156 0x0000ffff, /* dst_mask */
157 FALSE), /* pcrel_offset */
158
159 /* 12 bit absolute */
160 HOWTO (R_ARM_ABS12, /* type */
161 0, /* rightshift */
162 2, /* size (0 = byte, 1 = short, 2 = long) */
163 12, /* bitsize */
164 FALSE, /* pc_relative */
165 0, /* bitpos */
166 complain_overflow_bitfield,/* complain_on_overflow */
167 bfd_elf_generic_reloc, /* special_function */
168 "R_ARM_ABS12", /* name */
169 FALSE, /* partial_inplace */
00a97672
RS
170 0x00000fff, /* src_mask */
171 0x00000fff, /* dst_mask */
7f266840
DJ
172 FALSE), /* pcrel_offset */
173
174 HOWTO (R_ARM_THM_ABS5, /* type */
175 6, /* rightshift */
176 1, /* size (0 = byte, 1 = short, 2 = long) */
177 5, /* bitsize */
178 FALSE, /* pc_relative */
179 0, /* bitpos */
180 complain_overflow_bitfield,/* complain_on_overflow */
181 bfd_elf_generic_reloc, /* special_function */
182 "R_ARM_THM_ABS5", /* name */
183 FALSE, /* partial_inplace */
184 0x000007e0, /* src_mask */
185 0x000007e0, /* dst_mask */
186 FALSE), /* pcrel_offset */
187
188 /* 8 bit absolute */
189 HOWTO (R_ARM_ABS8, /* type */
190 0, /* rightshift */
191 0, /* size (0 = byte, 1 = short, 2 = long) */
192 8, /* bitsize */
193 FALSE, /* pc_relative */
194 0, /* bitpos */
195 complain_overflow_bitfield,/* complain_on_overflow */
196 bfd_elf_generic_reloc, /* special_function */
197 "R_ARM_ABS8", /* name */
198 FALSE, /* partial_inplace */
199 0x000000ff, /* src_mask */
200 0x000000ff, /* dst_mask */
201 FALSE), /* pcrel_offset */
202
203 HOWTO (R_ARM_SBREL32, /* type */
204 0, /* rightshift */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
206 32, /* bitsize */
207 FALSE, /* pc_relative */
208 0, /* bitpos */
209 complain_overflow_dont,/* complain_on_overflow */
210 bfd_elf_generic_reloc, /* special_function */
211 "R_ARM_SBREL32", /* name */
212 FALSE, /* partial_inplace */
213 0xffffffff, /* src_mask */
214 0xffffffff, /* dst_mask */
215 FALSE), /* pcrel_offset */
216
c19d1205 217 HOWTO (R_ARM_THM_CALL, /* type */
7f266840
DJ
218 1, /* rightshift */
219 2, /* size (0 = byte, 1 = short, 2 = long) */
e95de063 220 25, /* bitsize */
7f266840
DJ
221 TRUE, /* pc_relative */
222 0, /* bitpos */
223 complain_overflow_signed,/* complain_on_overflow */
224 bfd_elf_generic_reloc, /* special_function */
c19d1205 225 "R_ARM_THM_CALL", /* name */
7f266840
DJ
226 FALSE, /* partial_inplace */
227 0x07ff07ff, /* src_mask */
228 0x07ff07ff, /* dst_mask */
229 TRUE), /* pcrel_offset */
230
231 HOWTO (R_ARM_THM_PC8, /* type */
232 1, /* rightshift */
233 1, /* size (0 = byte, 1 = short, 2 = long) */
234 8, /* bitsize */
235 TRUE, /* pc_relative */
236 0, /* bitpos */
237 complain_overflow_signed,/* complain_on_overflow */
238 bfd_elf_generic_reloc, /* special_function */
239 "R_ARM_THM_PC8", /* name */
240 FALSE, /* partial_inplace */
241 0x000000ff, /* src_mask */
242 0x000000ff, /* dst_mask */
243 TRUE), /* pcrel_offset */
244
c19d1205 245 HOWTO (R_ARM_BREL_ADJ, /* type */
7f266840
DJ
246 1, /* rightshift */
247 1, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205
ZW
248 32, /* bitsize */
249 FALSE, /* pc_relative */
7f266840
DJ
250 0, /* bitpos */
251 complain_overflow_signed,/* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
c19d1205 253 "R_ARM_BREL_ADJ", /* name */
7f266840 254 FALSE, /* partial_inplace */
c19d1205
ZW
255 0xffffffff, /* src_mask */
256 0xffffffff, /* dst_mask */
257 FALSE), /* pcrel_offset */
7f266840
DJ
258
259 HOWTO (R_ARM_SWI24, /* type */
260 0, /* rightshift */
261 0, /* size (0 = byte, 1 = short, 2 = long) */
262 0, /* bitsize */
263 FALSE, /* pc_relative */
264 0, /* bitpos */
265 complain_overflow_signed,/* complain_on_overflow */
266 bfd_elf_generic_reloc, /* special_function */
267 "R_ARM_SWI24", /* name */
268 FALSE, /* partial_inplace */
269 0x00000000, /* src_mask */
270 0x00000000, /* dst_mask */
271 FALSE), /* pcrel_offset */
272
273 HOWTO (R_ARM_THM_SWI8, /* type */
274 0, /* rightshift */
275 0, /* size (0 = byte, 1 = short, 2 = long) */
276 0, /* bitsize */
277 FALSE, /* pc_relative */
278 0, /* bitpos */
279 complain_overflow_signed,/* complain_on_overflow */
280 bfd_elf_generic_reloc, /* special_function */
281 "R_ARM_SWI8", /* name */
282 FALSE, /* partial_inplace */
283 0x00000000, /* src_mask */
284 0x00000000, /* dst_mask */
285 FALSE), /* pcrel_offset */
286
287 /* BLX instruction for the ARM. */
288 HOWTO (R_ARM_XPC25, /* type */
289 2, /* rightshift */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
291 25, /* bitsize */
292 TRUE, /* pc_relative */
293 0, /* bitpos */
294 complain_overflow_signed,/* complain_on_overflow */
295 bfd_elf_generic_reloc, /* special_function */
296 "R_ARM_XPC25", /* name */
297 FALSE, /* partial_inplace */
298 0x00ffffff, /* src_mask */
299 0x00ffffff, /* dst_mask */
300 TRUE), /* pcrel_offset */
301
302 /* BLX instruction for the Thumb. */
303 HOWTO (R_ARM_THM_XPC22, /* type */
304 2, /* rightshift */
305 2, /* size (0 = byte, 1 = short, 2 = long) */
306 22, /* bitsize */
307 TRUE, /* pc_relative */
308 0, /* bitpos */
309 complain_overflow_signed,/* complain_on_overflow */
310 bfd_elf_generic_reloc, /* special_function */
311 "R_ARM_THM_XPC22", /* name */
312 FALSE, /* partial_inplace */
313 0x07ff07ff, /* src_mask */
314 0x07ff07ff, /* dst_mask */
315 TRUE), /* pcrel_offset */
316
ba93b8ac 317 /* Dynamic TLS relocations. */
7f266840 318
ba93b8ac
DJ
319 HOWTO (R_ARM_TLS_DTPMOD32, /* type */
320 0, /* rightshift */
321 2, /* size (0 = byte, 1 = short, 2 = long) */
322 32, /* bitsize */
323 FALSE, /* pc_relative */
324 0, /* bitpos */
325 complain_overflow_bitfield,/* complain_on_overflow */
326 bfd_elf_generic_reloc, /* special_function */
327 "R_ARM_TLS_DTPMOD32", /* name */
328 TRUE, /* partial_inplace */
329 0xffffffff, /* src_mask */
330 0xffffffff, /* dst_mask */
331 FALSE), /* pcrel_offset */
7f266840 332
ba93b8ac
DJ
333 HOWTO (R_ARM_TLS_DTPOFF32, /* type */
334 0, /* rightshift */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
336 32, /* bitsize */
337 FALSE, /* pc_relative */
338 0, /* bitpos */
339 complain_overflow_bitfield,/* complain_on_overflow */
340 bfd_elf_generic_reloc, /* special_function */
341 "R_ARM_TLS_DTPOFF32", /* name */
342 TRUE, /* partial_inplace */
343 0xffffffff, /* src_mask */
344 0xffffffff, /* dst_mask */
345 FALSE), /* pcrel_offset */
7f266840 346
ba93b8ac
DJ
347 HOWTO (R_ARM_TLS_TPOFF32, /* type */
348 0, /* rightshift */
349 2, /* size (0 = byte, 1 = short, 2 = long) */
350 32, /* bitsize */
351 FALSE, /* pc_relative */
352 0, /* bitpos */
353 complain_overflow_bitfield,/* complain_on_overflow */
354 bfd_elf_generic_reloc, /* special_function */
355 "R_ARM_TLS_TPOFF32", /* name */
356 TRUE, /* partial_inplace */
357 0xffffffff, /* src_mask */
358 0xffffffff, /* dst_mask */
359 FALSE), /* pcrel_offset */
7f266840
DJ
360
361 /* Relocs used in ARM Linux */
362
363 HOWTO (R_ARM_COPY, /* type */
364 0, /* rightshift */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
366 32, /* bitsize */
367 FALSE, /* pc_relative */
368 0, /* bitpos */
369 complain_overflow_bitfield,/* complain_on_overflow */
370 bfd_elf_generic_reloc, /* special_function */
371 "R_ARM_COPY", /* name */
372 TRUE, /* partial_inplace */
373 0xffffffff, /* src_mask */
374 0xffffffff, /* dst_mask */
375 FALSE), /* pcrel_offset */
376
377 HOWTO (R_ARM_GLOB_DAT, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 32, /* bitsize */
381 FALSE, /* pc_relative */
382 0, /* bitpos */
383 complain_overflow_bitfield,/* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_ARM_GLOB_DAT", /* name */
386 TRUE, /* partial_inplace */
387 0xffffffff, /* src_mask */
388 0xffffffff, /* dst_mask */
389 FALSE), /* pcrel_offset */
390
391 HOWTO (R_ARM_JUMP_SLOT, /* type */
392 0, /* rightshift */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
394 32, /* bitsize */
395 FALSE, /* pc_relative */
396 0, /* bitpos */
397 complain_overflow_bitfield,/* complain_on_overflow */
398 bfd_elf_generic_reloc, /* special_function */
399 "R_ARM_JUMP_SLOT", /* name */
400 TRUE, /* partial_inplace */
401 0xffffffff, /* src_mask */
402 0xffffffff, /* dst_mask */
403 FALSE), /* pcrel_offset */
404
405 HOWTO (R_ARM_RELATIVE, /* type */
406 0, /* rightshift */
407 2, /* size (0 = byte, 1 = short, 2 = long) */
408 32, /* bitsize */
409 FALSE, /* pc_relative */
410 0, /* bitpos */
411 complain_overflow_bitfield,/* complain_on_overflow */
412 bfd_elf_generic_reloc, /* special_function */
413 "R_ARM_RELATIVE", /* name */
414 TRUE, /* partial_inplace */
415 0xffffffff, /* src_mask */
416 0xffffffff, /* dst_mask */
417 FALSE), /* pcrel_offset */
418
c19d1205 419 HOWTO (R_ARM_GOTOFF32, /* type */
7f266840
DJ
420 0, /* rightshift */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
422 32, /* bitsize */
423 FALSE, /* pc_relative */
424 0, /* bitpos */
425 complain_overflow_bitfield,/* complain_on_overflow */
426 bfd_elf_generic_reloc, /* special_function */
c19d1205 427 "R_ARM_GOTOFF32", /* name */
7f266840
DJ
428 TRUE, /* partial_inplace */
429 0xffffffff, /* src_mask */
430 0xffffffff, /* dst_mask */
431 FALSE), /* pcrel_offset */
432
433 HOWTO (R_ARM_GOTPC, /* type */
434 0, /* rightshift */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
436 32, /* bitsize */
437 TRUE, /* pc_relative */
438 0, /* bitpos */
439 complain_overflow_bitfield,/* complain_on_overflow */
440 bfd_elf_generic_reloc, /* special_function */
441 "R_ARM_GOTPC", /* name */
442 TRUE, /* partial_inplace */
443 0xffffffff, /* src_mask */
444 0xffffffff, /* dst_mask */
445 TRUE), /* pcrel_offset */
446
447 HOWTO (R_ARM_GOT32, /* type */
448 0, /* rightshift */
449 2, /* size (0 = byte, 1 = short, 2 = long) */
450 32, /* bitsize */
451 FALSE, /* pc_relative */
452 0, /* bitpos */
453 complain_overflow_bitfield,/* complain_on_overflow */
454 bfd_elf_generic_reloc, /* special_function */
455 "R_ARM_GOT32", /* name */
456 TRUE, /* partial_inplace */
457 0xffffffff, /* src_mask */
458 0xffffffff, /* dst_mask */
459 FALSE), /* pcrel_offset */
460
461 HOWTO (R_ARM_PLT32, /* type */
462 2, /* rightshift */
463 2, /* size (0 = byte, 1 = short, 2 = long) */
ce490eda 464 24, /* bitsize */
7f266840
DJ
465 TRUE, /* pc_relative */
466 0, /* bitpos */
467 complain_overflow_bitfield,/* complain_on_overflow */
468 bfd_elf_generic_reloc, /* special_function */
469 "R_ARM_PLT32", /* name */
ce490eda 470 FALSE, /* partial_inplace */
7f266840
DJ
471 0x00ffffff, /* src_mask */
472 0x00ffffff, /* dst_mask */
473 TRUE), /* pcrel_offset */
474
475 HOWTO (R_ARM_CALL, /* type */
476 2, /* rightshift */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
478 24, /* bitsize */
479 TRUE, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_signed,/* complain_on_overflow */
482 bfd_elf_generic_reloc, /* special_function */
483 "R_ARM_CALL", /* name */
484 FALSE, /* partial_inplace */
485 0x00ffffff, /* src_mask */
486 0x00ffffff, /* dst_mask */
487 TRUE), /* pcrel_offset */
488
489 HOWTO (R_ARM_JUMP24, /* type */
490 2, /* rightshift */
491 2, /* size (0 = byte, 1 = short, 2 = long) */
492 24, /* bitsize */
493 TRUE, /* pc_relative */
494 0, /* bitpos */
495 complain_overflow_signed,/* complain_on_overflow */
496 bfd_elf_generic_reloc, /* special_function */
497 "R_ARM_JUMP24", /* name */
498 FALSE, /* partial_inplace */
499 0x00ffffff, /* src_mask */
500 0x00ffffff, /* dst_mask */
501 TRUE), /* pcrel_offset */
502
c19d1205
ZW
503 HOWTO (R_ARM_THM_JUMP24, /* type */
504 1, /* rightshift */
505 2, /* size (0 = byte, 1 = short, 2 = long) */
506 24, /* bitsize */
507 TRUE, /* pc_relative */
7f266840 508 0, /* bitpos */
c19d1205 509 complain_overflow_signed,/* complain_on_overflow */
7f266840 510 bfd_elf_generic_reloc, /* special_function */
c19d1205 511 "R_ARM_THM_JUMP24", /* name */
7f266840 512 FALSE, /* partial_inplace */
c19d1205
ZW
513 0x07ff2fff, /* src_mask */
514 0x07ff2fff, /* dst_mask */
515 TRUE), /* pcrel_offset */
7f266840 516
c19d1205 517 HOWTO (R_ARM_BASE_ABS, /* type */
7f266840 518 0, /* rightshift */
c19d1205
ZW
519 2, /* size (0 = byte, 1 = short, 2 = long) */
520 32, /* bitsize */
7f266840
DJ
521 FALSE, /* pc_relative */
522 0, /* bitpos */
523 complain_overflow_dont,/* complain_on_overflow */
524 bfd_elf_generic_reloc, /* special_function */
c19d1205 525 "R_ARM_BASE_ABS", /* name */
7f266840 526 FALSE, /* partial_inplace */
c19d1205
ZW
527 0xffffffff, /* src_mask */
528 0xffffffff, /* dst_mask */
7f266840
DJ
529 FALSE), /* pcrel_offset */
530
531 HOWTO (R_ARM_ALU_PCREL7_0, /* type */
532 0, /* rightshift */
533 2, /* size (0 = byte, 1 = short, 2 = long) */
534 12, /* bitsize */
535 TRUE, /* pc_relative */
536 0, /* bitpos */
537 complain_overflow_dont,/* complain_on_overflow */
538 bfd_elf_generic_reloc, /* special_function */
539 "R_ARM_ALU_PCREL_7_0", /* name */
540 FALSE, /* partial_inplace */
541 0x00000fff, /* src_mask */
542 0x00000fff, /* dst_mask */
543 TRUE), /* pcrel_offset */
544
545 HOWTO (R_ARM_ALU_PCREL15_8, /* type */
546 0, /* rightshift */
547 2, /* size (0 = byte, 1 = short, 2 = long) */
548 12, /* bitsize */
549 TRUE, /* pc_relative */
550 8, /* bitpos */
551 complain_overflow_dont,/* complain_on_overflow */
552 bfd_elf_generic_reloc, /* special_function */
553 "R_ARM_ALU_PCREL_15_8",/* name */
554 FALSE, /* partial_inplace */
555 0x00000fff, /* src_mask */
556 0x00000fff, /* dst_mask */
557 TRUE), /* pcrel_offset */
558
559 HOWTO (R_ARM_ALU_PCREL23_15, /* type */
560 0, /* rightshift */
561 2, /* size (0 = byte, 1 = short, 2 = long) */
562 12, /* bitsize */
563 TRUE, /* pc_relative */
564 16, /* bitpos */
565 complain_overflow_dont,/* complain_on_overflow */
566 bfd_elf_generic_reloc, /* special_function */
567 "R_ARM_ALU_PCREL_23_15",/* name */
568 FALSE, /* partial_inplace */
569 0x00000fff, /* src_mask */
570 0x00000fff, /* dst_mask */
571 TRUE), /* pcrel_offset */
572
573 HOWTO (R_ARM_LDR_SBREL_11_0, /* type */
574 0, /* rightshift */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
576 12, /* bitsize */
577 FALSE, /* pc_relative */
578 0, /* bitpos */
579 complain_overflow_dont,/* complain_on_overflow */
580 bfd_elf_generic_reloc, /* special_function */
581 "R_ARM_LDR_SBREL_11_0",/* name */
582 FALSE, /* partial_inplace */
583 0x00000fff, /* src_mask */
584 0x00000fff, /* dst_mask */
585 FALSE), /* pcrel_offset */
586
587 HOWTO (R_ARM_ALU_SBREL_19_12, /* type */
588 0, /* rightshift */
589 2, /* size (0 = byte, 1 = short, 2 = long) */
590 8, /* bitsize */
591 FALSE, /* pc_relative */
592 12, /* bitpos */
593 complain_overflow_dont,/* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_ARM_ALU_SBREL_19_12",/* name */
596 FALSE, /* partial_inplace */
597 0x000ff000, /* src_mask */
598 0x000ff000, /* dst_mask */
599 FALSE), /* pcrel_offset */
600
601 HOWTO (R_ARM_ALU_SBREL_27_20, /* type */
602 0, /* rightshift */
603 2, /* size (0 = byte, 1 = short, 2 = long) */
604 8, /* bitsize */
605 FALSE, /* pc_relative */
606 20, /* bitpos */
607 complain_overflow_dont,/* complain_on_overflow */
608 bfd_elf_generic_reloc, /* special_function */
609 "R_ARM_ALU_SBREL_27_20",/* name */
610 FALSE, /* partial_inplace */
611 0x0ff00000, /* src_mask */
612 0x0ff00000, /* dst_mask */
613 FALSE), /* pcrel_offset */
614
615 HOWTO (R_ARM_TARGET1, /* type */
616 0, /* rightshift */
617 2, /* size (0 = byte, 1 = short, 2 = long) */
618 32, /* bitsize */
619 FALSE, /* pc_relative */
620 0, /* bitpos */
621 complain_overflow_dont,/* complain_on_overflow */
622 bfd_elf_generic_reloc, /* special_function */
623 "R_ARM_TARGET1", /* name */
624 FALSE, /* partial_inplace */
625 0xffffffff, /* src_mask */
626 0xffffffff, /* dst_mask */
627 FALSE), /* pcrel_offset */
628
629 HOWTO (R_ARM_ROSEGREL32, /* type */
630 0, /* rightshift */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
632 32, /* bitsize */
633 FALSE, /* pc_relative */
634 0, /* bitpos */
635 complain_overflow_dont,/* complain_on_overflow */
636 bfd_elf_generic_reloc, /* special_function */
637 "R_ARM_ROSEGREL32", /* name */
638 FALSE, /* partial_inplace */
639 0xffffffff, /* src_mask */
640 0xffffffff, /* dst_mask */
641 FALSE), /* pcrel_offset */
642
643 HOWTO (R_ARM_V4BX, /* type */
644 0, /* rightshift */
645 2, /* size (0 = byte, 1 = short, 2 = long) */
646 32, /* bitsize */
647 FALSE, /* pc_relative */
648 0, /* bitpos */
649 complain_overflow_dont,/* complain_on_overflow */
650 bfd_elf_generic_reloc, /* special_function */
651 "R_ARM_V4BX", /* name */
652 FALSE, /* partial_inplace */
653 0xffffffff, /* src_mask */
654 0xffffffff, /* dst_mask */
655 FALSE), /* pcrel_offset */
656
657 HOWTO (R_ARM_TARGET2, /* type */
658 0, /* rightshift */
659 2, /* size (0 = byte, 1 = short, 2 = long) */
660 32, /* bitsize */
661 FALSE, /* pc_relative */
662 0, /* bitpos */
663 complain_overflow_signed,/* complain_on_overflow */
664 bfd_elf_generic_reloc, /* special_function */
665 "R_ARM_TARGET2", /* name */
666 FALSE, /* partial_inplace */
667 0xffffffff, /* src_mask */
668 0xffffffff, /* dst_mask */
669 TRUE), /* pcrel_offset */
670
671 HOWTO (R_ARM_PREL31, /* type */
672 0, /* rightshift */
673 2, /* size (0 = byte, 1 = short, 2 = long) */
674 31, /* bitsize */
675 TRUE, /* pc_relative */
676 0, /* bitpos */
677 complain_overflow_signed,/* complain_on_overflow */
678 bfd_elf_generic_reloc, /* special_function */
679 "R_ARM_PREL31", /* name */
680 FALSE, /* partial_inplace */
681 0x7fffffff, /* src_mask */
682 0x7fffffff, /* dst_mask */
683 TRUE), /* pcrel_offset */
c19d1205
ZW
684
685 HOWTO (R_ARM_MOVW_ABS_NC, /* type */
686 0, /* rightshift */
687 2, /* size (0 = byte, 1 = short, 2 = long) */
688 16, /* bitsize */
689 FALSE, /* pc_relative */
690 0, /* bitpos */
691 complain_overflow_dont,/* complain_on_overflow */
692 bfd_elf_generic_reloc, /* special_function */
693 "R_ARM_MOVW_ABS_NC", /* name */
694 FALSE, /* partial_inplace */
39623e12
PB
695 0x000f0fff, /* src_mask */
696 0x000f0fff, /* dst_mask */
c19d1205
ZW
697 FALSE), /* pcrel_offset */
698
699 HOWTO (R_ARM_MOVT_ABS, /* type */
700 0, /* rightshift */
701 2, /* size (0 = byte, 1 = short, 2 = long) */
702 16, /* bitsize */
703 FALSE, /* pc_relative */
704 0, /* bitpos */
705 complain_overflow_bitfield,/* complain_on_overflow */
706 bfd_elf_generic_reloc, /* special_function */
707 "R_ARM_MOVT_ABS", /* name */
708 FALSE, /* partial_inplace */
39623e12
PB
709 0x000f0fff, /* src_mask */
710 0x000f0fff, /* dst_mask */
c19d1205
ZW
711 FALSE), /* pcrel_offset */
712
713 HOWTO (R_ARM_MOVW_PREL_NC, /* type */
714 0, /* rightshift */
715 2, /* size (0 = byte, 1 = short, 2 = long) */
716 16, /* bitsize */
717 TRUE, /* pc_relative */
718 0, /* bitpos */
719 complain_overflow_dont,/* complain_on_overflow */
720 bfd_elf_generic_reloc, /* special_function */
721 "R_ARM_MOVW_PREL_NC", /* name */
722 FALSE, /* partial_inplace */
39623e12
PB
723 0x000f0fff, /* src_mask */
724 0x000f0fff, /* dst_mask */
c19d1205
ZW
725 TRUE), /* pcrel_offset */
726
727 HOWTO (R_ARM_MOVT_PREL, /* type */
728 0, /* rightshift */
729 2, /* size (0 = byte, 1 = short, 2 = long) */
730 16, /* bitsize */
731 TRUE, /* pc_relative */
732 0, /* bitpos */
733 complain_overflow_bitfield,/* complain_on_overflow */
734 bfd_elf_generic_reloc, /* special_function */
735 "R_ARM_MOVT_PREL", /* name */
736 FALSE, /* partial_inplace */
39623e12
PB
737 0x000f0fff, /* src_mask */
738 0x000f0fff, /* dst_mask */
c19d1205
ZW
739 TRUE), /* pcrel_offset */
740
741 HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */
742 0, /* rightshift */
743 2, /* size (0 = byte, 1 = short, 2 = long) */
744 16, /* bitsize */
745 FALSE, /* pc_relative */
746 0, /* bitpos */
747 complain_overflow_dont,/* complain_on_overflow */
748 bfd_elf_generic_reloc, /* special_function */
749 "R_ARM_THM_MOVW_ABS_NC",/* name */
750 FALSE, /* partial_inplace */
751 0x040f70ff, /* src_mask */
752 0x040f70ff, /* dst_mask */
753 FALSE), /* pcrel_offset */
754
755 HOWTO (R_ARM_THM_MOVT_ABS, /* type */
756 0, /* rightshift */
757 2, /* size (0 = byte, 1 = short, 2 = long) */
758 16, /* bitsize */
759 FALSE, /* pc_relative */
760 0, /* bitpos */
761 complain_overflow_bitfield,/* complain_on_overflow */
762 bfd_elf_generic_reloc, /* special_function */
763 "R_ARM_THM_MOVT_ABS", /* name */
764 FALSE, /* partial_inplace */
765 0x040f70ff, /* src_mask */
766 0x040f70ff, /* dst_mask */
767 FALSE), /* pcrel_offset */
768
769 HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */
770 0, /* rightshift */
771 2, /* size (0 = byte, 1 = short, 2 = long) */
772 16, /* bitsize */
773 TRUE, /* pc_relative */
774 0, /* bitpos */
775 complain_overflow_dont,/* complain_on_overflow */
776 bfd_elf_generic_reloc, /* special_function */
777 "R_ARM_THM_MOVW_PREL_NC",/* name */
778 FALSE, /* partial_inplace */
779 0x040f70ff, /* src_mask */
780 0x040f70ff, /* dst_mask */
781 TRUE), /* pcrel_offset */
782
783 HOWTO (R_ARM_THM_MOVT_PREL, /* type */
784 0, /* rightshift */
785 2, /* size (0 = byte, 1 = short, 2 = long) */
786 16, /* bitsize */
787 TRUE, /* pc_relative */
788 0, /* bitpos */
789 complain_overflow_bitfield,/* complain_on_overflow */
790 bfd_elf_generic_reloc, /* special_function */
791 "R_ARM_THM_MOVT_PREL", /* name */
792 FALSE, /* partial_inplace */
793 0x040f70ff, /* src_mask */
794 0x040f70ff, /* dst_mask */
795 TRUE), /* pcrel_offset */
796
797 HOWTO (R_ARM_THM_JUMP19, /* type */
798 1, /* rightshift */
799 2, /* size (0 = byte, 1 = short, 2 = long) */
800 19, /* bitsize */
801 TRUE, /* pc_relative */
802 0, /* bitpos */
803 complain_overflow_signed,/* complain_on_overflow */
804 bfd_elf_generic_reloc, /* special_function */
805 "R_ARM_THM_JUMP19", /* name */
806 FALSE, /* partial_inplace */
807 0x043f2fff, /* src_mask */
808 0x043f2fff, /* dst_mask */
809 TRUE), /* pcrel_offset */
810
811 HOWTO (R_ARM_THM_JUMP6, /* type */
812 1, /* rightshift */
813 1, /* size (0 = byte, 1 = short, 2 = long) */
814 6, /* bitsize */
815 TRUE, /* pc_relative */
816 0, /* bitpos */
817 complain_overflow_unsigned,/* complain_on_overflow */
818 bfd_elf_generic_reloc, /* special_function */
819 "R_ARM_THM_JUMP6", /* name */
820 FALSE, /* partial_inplace */
821 0x02f8, /* src_mask */
822 0x02f8, /* dst_mask */
823 TRUE), /* pcrel_offset */
824
825 /* These are declared as 13-bit signed relocations because we can
826 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
827 versa. */
828 HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */
829 0, /* rightshift */
830 2, /* size (0 = byte, 1 = short, 2 = long) */
831 13, /* bitsize */
832 TRUE, /* pc_relative */
833 0, /* bitpos */
2cab6cc3 834 complain_overflow_dont,/* complain_on_overflow */
c19d1205
ZW
835 bfd_elf_generic_reloc, /* special_function */
836 "R_ARM_THM_ALU_PREL_11_0",/* name */
837 FALSE, /* partial_inplace */
2cab6cc3
MS
838 0xffffffff, /* src_mask */
839 0xffffffff, /* dst_mask */
c19d1205
ZW
840 TRUE), /* pcrel_offset */
841
842 HOWTO (R_ARM_THM_PC12, /* type */
843 0, /* rightshift */
844 2, /* size (0 = byte, 1 = short, 2 = long) */
845 13, /* bitsize */
846 TRUE, /* pc_relative */
847 0, /* bitpos */
2cab6cc3 848 complain_overflow_dont,/* complain_on_overflow */
c19d1205
ZW
849 bfd_elf_generic_reloc, /* special_function */
850 "R_ARM_THM_PC12", /* name */
851 FALSE, /* partial_inplace */
2cab6cc3
MS
852 0xffffffff, /* src_mask */
853 0xffffffff, /* dst_mask */
c19d1205
ZW
854 TRUE), /* pcrel_offset */
855
856 HOWTO (R_ARM_ABS32_NOI, /* type */
857 0, /* rightshift */
858 2, /* size (0 = byte, 1 = short, 2 = long) */
859 32, /* bitsize */
860 FALSE, /* pc_relative */
861 0, /* bitpos */
862 complain_overflow_dont,/* complain_on_overflow */
863 bfd_elf_generic_reloc, /* special_function */
864 "R_ARM_ABS32_NOI", /* name */
865 FALSE, /* partial_inplace */
866 0xffffffff, /* src_mask */
867 0xffffffff, /* dst_mask */
868 FALSE), /* pcrel_offset */
869
870 HOWTO (R_ARM_REL32_NOI, /* type */
871 0, /* rightshift */
872 2, /* size (0 = byte, 1 = short, 2 = long) */
873 32, /* bitsize */
874 TRUE, /* pc_relative */
875 0, /* bitpos */
876 complain_overflow_dont,/* complain_on_overflow */
877 bfd_elf_generic_reloc, /* special_function */
878 "R_ARM_REL32_NOI", /* name */
879 FALSE, /* partial_inplace */
880 0xffffffff, /* src_mask */
881 0xffffffff, /* dst_mask */
882 FALSE), /* pcrel_offset */
7f266840 883
4962c51a
MS
884 /* Group relocations. */
885
886 HOWTO (R_ARM_ALU_PC_G0_NC, /* type */
887 0, /* rightshift */
888 2, /* size (0 = byte, 1 = short, 2 = long) */
889 32, /* bitsize */
890 TRUE, /* pc_relative */
891 0, /* bitpos */
892 complain_overflow_dont,/* complain_on_overflow */
893 bfd_elf_generic_reloc, /* special_function */
894 "R_ARM_ALU_PC_G0_NC", /* name */
895 FALSE, /* partial_inplace */
896 0xffffffff, /* src_mask */
897 0xffffffff, /* dst_mask */
898 TRUE), /* pcrel_offset */
899
900 HOWTO (R_ARM_ALU_PC_G0, /* type */
901 0, /* rightshift */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
903 32, /* bitsize */
904 TRUE, /* pc_relative */
905 0, /* bitpos */
906 complain_overflow_dont,/* complain_on_overflow */
907 bfd_elf_generic_reloc, /* special_function */
908 "R_ARM_ALU_PC_G0", /* name */
909 FALSE, /* partial_inplace */
910 0xffffffff, /* src_mask */
911 0xffffffff, /* dst_mask */
912 TRUE), /* pcrel_offset */
913
914 HOWTO (R_ARM_ALU_PC_G1_NC, /* type */
915 0, /* rightshift */
916 2, /* size (0 = byte, 1 = short, 2 = long) */
917 32, /* bitsize */
918 TRUE, /* pc_relative */
919 0, /* bitpos */
920 complain_overflow_dont,/* complain_on_overflow */
921 bfd_elf_generic_reloc, /* special_function */
922 "R_ARM_ALU_PC_G1_NC", /* name */
923 FALSE, /* partial_inplace */
924 0xffffffff, /* src_mask */
925 0xffffffff, /* dst_mask */
926 TRUE), /* pcrel_offset */
927
928 HOWTO (R_ARM_ALU_PC_G1, /* type */
929 0, /* rightshift */
930 2, /* size (0 = byte, 1 = short, 2 = long) */
931 32, /* bitsize */
932 TRUE, /* pc_relative */
933 0, /* bitpos */
934 complain_overflow_dont,/* complain_on_overflow */
935 bfd_elf_generic_reloc, /* special_function */
936 "R_ARM_ALU_PC_G1", /* name */
937 FALSE, /* partial_inplace */
938 0xffffffff, /* src_mask */
939 0xffffffff, /* dst_mask */
940 TRUE), /* pcrel_offset */
941
942 HOWTO (R_ARM_ALU_PC_G2, /* type */
943 0, /* rightshift */
944 2, /* size (0 = byte, 1 = short, 2 = long) */
945 32, /* bitsize */
946 TRUE, /* pc_relative */
947 0, /* bitpos */
948 complain_overflow_dont,/* complain_on_overflow */
949 bfd_elf_generic_reloc, /* special_function */
950 "R_ARM_ALU_PC_G2", /* name */
951 FALSE, /* partial_inplace */
952 0xffffffff, /* src_mask */
953 0xffffffff, /* dst_mask */
954 TRUE), /* pcrel_offset */
955
956 HOWTO (R_ARM_LDR_PC_G1, /* type */
957 0, /* rightshift */
958 2, /* size (0 = byte, 1 = short, 2 = long) */
959 32, /* bitsize */
960 TRUE, /* pc_relative */
961 0, /* bitpos */
962 complain_overflow_dont,/* complain_on_overflow */
963 bfd_elf_generic_reloc, /* special_function */
964 "R_ARM_LDR_PC_G1", /* name */
965 FALSE, /* partial_inplace */
966 0xffffffff, /* src_mask */
967 0xffffffff, /* dst_mask */
968 TRUE), /* pcrel_offset */
969
970 HOWTO (R_ARM_LDR_PC_G2, /* type */
971 0, /* rightshift */
972 2, /* size (0 = byte, 1 = short, 2 = long) */
973 32, /* bitsize */
974 TRUE, /* pc_relative */
975 0, /* bitpos */
976 complain_overflow_dont,/* complain_on_overflow */
977 bfd_elf_generic_reloc, /* special_function */
978 "R_ARM_LDR_PC_G2", /* name */
979 FALSE, /* partial_inplace */
980 0xffffffff, /* src_mask */
981 0xffffffff, /* dst_mask */
982 TRUE), /* pcrel_offset */
983
984 HOWTO (R_ARM_LDRS_PC_G0, /* type */
985 0, /* rightshift */
986 2, /* size (0 = byte, 1 = short, 2 = long) */
987 32, /* bitsize */
988 TRUE, /* pc_relative */
989 0, /* bitpos */
990 complain_overflow_dont,/* complain_on_overflow */
991 bfd_elf_generic_reloc, /* special_function */
992 "R_ARM_LDRS_PC_G0", /* name */
993 FALSE, /* partial_inplace */
994 0xffffffff, /* src_mask */
995 0xffffffff, /* dst_mask */
996 TRUE), /* pcrel_offset */
997
998 HOWTO (R_ARM_LDRS_PC_G1, /* type */
999 0, /* rightshift */
1000 2, /* size (0 = byte, 1 = short, 2 = long) */
1001 32, /* bitsize */
1002 TRUE, /* pc_relative */
1003 0, /* bitpos */
1004 complain_overflow_dont,/* complain_on_overflow */
1005 bfd_elf_generic_reloc, /* special_function */
1006 "R_ARM_LDRS_PC_G1", /* name */
1007 FALSE, /* partial_inplace */
1008 0xffffffff, /* src_mask */
1009 0xffffffff, /* dst_mask */
1010 TRUE), /* pcrel_offset */
1011
1012 HOWTO (R_ARM_LDRS_PC_G2, /* type */
1013 0, /* rightshift */
1014 2, /* size (0 = byte, 1 = short, 2 = long) */
1015 32, /* bitsize */
1016 TRUE, /* pc_relative */
1017 0, /* bitpos */
1018 complain_overflow_dont,/* complain_on_overflow */
1019 bfd_elf_generic_reloc, /* special_function */
1020 "R_ARM_LDRS_PC_G2", /* name */
1021 FALSE, /* partial_inplace */
1022 0xffffffff, /* src_mask */
1023 0xffffffff, /* dst_mask */
1024 TRUE), /* pcrel_offset */
1025
1026 HOWTO (R_ARM_LDC_PC_G0, /* type */
1027 0, /* rightshift */
1028 2, /* size (0 = byte, 1 = short, 2 = long) */
1029 32, /* bitsize */
1030 TRUE, /* pc_relative */
1031 0, /* bitpos */
1032 complain_overflow_dont,/* complain_on_overflow */
1033 bfd_elf_generic_reloc, /* special_function */
1034 "R_ARM_LDC_PC_G0", /* name */
1035 FALSE, /* partial_inplace */
1036 0xffffffff, /* src_mask */
1037 0xffffffff, /* dst_mask */
1038 TRUE), /* pcrel_offset */
1039
1040 HOWTO (R_ARM_LDC_PC_G1, /* type */
1041 0, /* rightshift */
1042 2, /* size (0 = byte, 1 = short, 2 = long) */
1043 32, /* bitsize */
1044 TRUE, /* pc_relative */
1045 0, /* bitpos */
1046 complain_overflow_dont,/* complain_on_overflow */
1047 bfd_elf_generic_reloc, /* special_function */
1048 "R_ARM_LDC_PC_G1", /* name */
1049 FALSE, /* partial_inplace */
1050 0xffffffff, /* src_mask */
1051 0xffffffff, /* dst_mask */
1052 TRUE), /* pcrel_offset */
1053
1054 HOWTO (R_ARM_LDC_PC_G2, /* type */
1055 0, /* rightshift */
1056 2, /* size (0 = byte, 1 = short, 2 = long) */
1057 32, /* bitsize */
1058 TRUE, /* pc_relative */
1059 0, /* bitpos */
1060 complain_overflow_dont,/* complain_on_overflow */
1061 bfd_elf_generic_reloc, /* special_function */
1062 "R_ARM_LDC_PC_G2", /* name */
1063 FALSE, /* partial_inplace */
1064 0xffffffff, /* src_mask */
1065 0xffffffff, /* dst_mask */
1066 TRUE), /* pcrel_offset */
1067
1068 HOWTO (R_ARM_ALU_SB_G0_NC, /* type */
1069 0, /* rightshift */
1070 2, /* size (0 = byte, 1 = short, 2 = long) */
1071 32, /* bitsize */
1072 TRUE, /* pc_relative */
1073 0, /* bitpos */
1074 complain_overflow_dont,/* complain_on_overflow */
1075 bfd_elf_generic_reloc, /* special_function */
1076 "R_ARM_ALU_SB_G0_NC", /* name */
1077 FALSE, /* partial_inplace */
1078 0xffffffff, /* src_mask */
1079 0xffffffff, /* dst_mask */
1080 TRUE), /* pcrel_offset */
1081
1082 HOWTO (R_ARM_ALU_SB_G0, /* type */
1083 0, /* rightshift */
1084 2, /* size (0 = byte, 1 = short, 2 = long) */
1085 32, /* bitsize */
1086 TRUE, /* pc_relative */
1087 0, /* bitpos */
1088 complain_overflow_dont,/* complain_on_overflow */
1089 bfd_elf_generic_reloc, /* special_function */
1090 "R_ARM_ALU_SB_G0", /* name */
1091 FALSE, /* partial_inplace */
1092 0xffffffff, /* src_mask */
1093 0xffffffff, /* dst_mask */
1094 TRUE), /* pcrel_offset */
1095
1096 HOWTO (R_ARM_ALU_SB_G1_NC, /* type */
1097 0, /* rightshift */
1098 2, /* size (0 = byte, 1 = short, 2 = long) */
1099 32, /* bitsize */
1100 TRUE, /* pc_relative */
1101 0, /* bitpos */
1102 complain_overflow_dont,/* complain_on_overflow */
1103 bfd_elf_generic_reloc, /* special_function */
1104 "R_ARM_ALU_SB_G1_NC", /* name */
1105 FALSE, /* partial_inplace */
1106 0xffffffff, /* src_mask */
1107 0xffffffff, /* dst_mask */
1108 TRUE), /* pcrel_offset */
1109
1110 HOWTO (R_ARM_ALU_SB_G1, /* type */
1111 0, /* rightshift */
1112 2, /* size (0 = byte, 1 = short, 2 = long) */
1113 32, /* bitsize */
1114 TRUE, /* pc_relative */
1115 0, /* bitpos */
1116 complain_overflow_dont,/* complain_on_overflow */
1117 bfd_elf_generic_reloc, /* special_function */
1118 "R_ARM_ALU_SB_G1", /* name */
1119 FALSE, /* partial_inplace */
1120 0xffffffff, /* src_mask */
1121 0xffffffff, /* dst_mask */
1122 TRUE), /* pcrel_offset */
1123
1124 HOWTO (R_ARM_ALU_SB_G2, /* type */
1125 0, /* rightshift */
1126 2, /* size (0 = byte, 1 = short, 2 = long) */
1127 32, /* bitsize */
1128 TRUE, /* pc_relative */
1129 0, /* bitpos */
1130 complain_overflow_dont,/* complain_on_overflow */
1131 bfd_elf_generic_reloc, /* special_function */
1132 "R_ARM_ALU_SB_G2", /* name */
1133 FALSE, /* partial_inplace */
1134 0xffffffff, /* src_mask */
1135 0xffffffff, /* dst_mask */
1136 TRUE), /* pcrel_offset */
1137
1138 HOWTO (R_ARM_LDR_SB_G0, /* type */
1139 0, /* rightshift */
1140 2, /* size (0 = byte, 1 = short, 2 = long) */
1141 32, /* bitsize */
1142 TRUE, /* pc_relative */
1143 0, /* bitpos */
1144 complain_overflow_dont,/* complain_on_overflow */
1145 bfd_elf_generic_reloc, /* special_function */
1146 "R_ARM_LDR_SB_G0", /* name */
1147 FALSE, /* partial_inplace */
1148 0xffffffff, /* src_mask */
1149 0xffffffff, /* dst_mask */
1150 TRUE), /* pcrel_offset */
1151
1152 HOWTO (R_ARM_LDR_SB_G1, /* type */
1153 0, /* rightshift */
1154 2, /* size (0 = byte, 1 = short, 2 = long) */
1155 32, /* bitsize */
1156 TRUE, /* pc_relative */
1157 0, /* bitpos */
1158 complain_overflow_dont,/* complain_on_overflow */
1159 bfd_elf_generic_reloc, /* special_function */
1160 "R_ARM_LDR_SB_G1", /* name */
1161 FALSE, /* partial_inplace */
1162 0xffffffff, /* src_mask */
1163 0xffffffff, /* dst_mask */
1164 TRUE), /* pcrel_offset */
1165
1166 HOWTO (R_ARM_LDR_SB_G2, /* type */
1167 0, /* rightshift */
1168 2, /* size (0 = byte, 1 = short, 2 = long) */
1169 32, /* bitsize */
1170 TRUE, /* pc_relative */
1171 0, /* bitpos */
1172 complain_overflow_dont,/* complain_on_overflow */
1173 bfd_elf_generic_reloc, /* special_function */
1174 "R_ARM_LDR_SB_G2", /* name */
1175 FALSE, /* partial_inplace */
1176 0xffffffff, /* src_mask */
1177 0xffffffff, /* dst_mask */
1178 TRUE), /* pcrel_offset */
1179
1180 HOWTO (R_ARM_LDRS_SB_G0, /* type */
1181 0, /* rightshift */
1182 2, /* size (0 = byte, 1 = short, 2 = long) */
1183 32, /* bitsize */
1184 TRUE, /* pc_relative */
1185 0, /* bitpos */
1186 complain_overflow_dont,/* complain_on_overflow */
1187 bfd_elf_generic_reloc, /* special_function */
1188 "R_ARM_LDRS_SB_G0", /* name */
1189 FALSE, /* partial_inplace */
1190 0xffffffff, /* src_mask */
1191 0xffffffff, /* dst_mask */
1192 TRUE), /* pcrel_offset */
1193
1194 HOWTO (R_ARM_LDRS_SB_G1, /* type */
1195 0, /* rightshift */
1196 2, /* size (0 = byte, 1 = short, 2 = long) */
1197 32, /* bitsize */
1198 TRUE, /* pc_relative */
1199 0, /* bitpos */
1200 complain_overflow_dont,/* complain_on_overflow */
1201 bfd_elf_generic_reloc, /* special_function */
1202 "R_ARM_LDRS_SB_G1", /* name */
1203 FALSE, /* partial_inplace */
1204 0xffffffff, /* src_mask */
1205 0xffffffff, /* dst_mask */
1206 TRUE), /* pcrel_offset */
1207
1208 HOWTO (R_ARM_LDRS_SB_G2, /* type */
1209 0, /* rightshift */
1210 2, /* size (0 = byte, 1 = short, 2 = long) */
1211 32, /* bitsize */
1212 TRUE, /* pc_relative */
1213 0, /* bitpos */
1214 complain_overflow_dont,/* complain_on_overflow */
1215 bfd_elf_generic_reloc, /* special_function */
1216 "R_ARM_LDRS_SB_G2", /* name */
1217 FALSE, /* partial_inplace */
1218 0xffffffff, /* src_mask */
1219 0xffffffff, /* dst_mask */
1220 TRUE), /* pcrel_offset */
1221
1222 HOWTO (R_ARM_LDC_SB_G0, /* type */
1223 0, /* rightshift */
1224 2, /* size (0 = byte, 1 = short, 2 = long) */
1225 32, /* bitsize */
1226 TRUE, /* pc_relative */
1227 0, /* bitpos */
1228 complain_overflow_dont,/* complain_on_overflow */
1229 bfd_elf_generic_reloc, /* special_function */
1230 "R_ARM_LDC_SB_G0", /* name */
1231 FALSE, /* partial_inplace */
1232 0xffffffff, /* src_mask */
1233 0xffffffff, /* dst_mask */
1234 TRUE), /* pcrel_offset */
1235
1236 HOWTO (R_ARM_LDC_SB_G1, /* type */
1237 0, /* rightshift */
1238 2, /* size (0 = byte, 1 = short, 2 = long) */
1239 32, /* bitsize */
1240 TRUE, /* pc_relative */
1241 0, /* bitpos */
1242 complain_overflow_dont,/* complain_on_overflow */
1243 bfd_elf_generic_reloc, /* special_function */
1244 "R_ARM_LDC_SB_G1", /* name */
1245 FALSE, /* partial_inplace */
1246 0xffffffff, /* src_mask */
1247 0xffffffff, /* dst_mask */
1248 TRUE), /* pcrel_offset */
1249
1250 HOWTO (R_ARM_LDC_SB_G2, /* type */
1251 0, /* rightshift */
1252 2, /* size (0 = byte, 1 = short, 2 = long) */
1253 32, /* bitsize */
1254 TRUE, /* pc_relative */
1255 0, /* bitpos */
1256 complain_overflow_dont,/* complain_on_overflow */
1257 bfd_elf_generic_reloc, /* special_function */
1258 "R_ARM_LDC_SB_G2", /* name */
1259 FALSE, /* partial_inplace */
1260 0xffffffff, /* src_mask */
1261 0xffffffff, /* dst_mask */
1262 TRUE), /* pcrel_offset */
1263
1264 /* End of group relocations. */
c19d1205 1265
c19d1205
ZW
1266 HOWTO (R_ARM_MOVW_BREL_NC, /* type */
1267 0, /* rightshift */
1268 2, /* size (0 = byte, 1 = short, 2 = long) */
1269 16, /* bitsize */
1270 FALSE, /* pc_relative */
1271 0, /* bitpos */
1272 complain_overflow_dont,/* complain_on_overflow */
1273 bfd_elf_generic_reloc, /* special_function */
1274 "R_ARM_MOVW_BREL_NC", /* name */
1275 FALSE, /* partial_inplace */
1276 0x0000ffff, /* src_mask */
1277 0x0000ffff, /* dst_mask */
1278 FALSE), /* pcrel_offset */
1279
1280 HOWTO (R_ARM_MOVT_BREL, /* type */
1281 0, /* rightshift */
1282 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 16, /* bitsize */
1284 FALSE, /* pc_relative */
1285 0, /* bitpos */
1286 complain_overflow_bitfield,/* complain_on_overflow */
1287 bfd_elf_generic_reloc, /* special_function */
1288 "R_ARM_MOVT_BREL", /* name */
1289 FALSE, /* partial_inplace */
1290 0x0000ffff, /* src_mask */
1291 0x0000ffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1293
1294 HOWTO (R_ARM_MOVW_BREL, /* type */
1295 0, /* rightshift */
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 16, /* bitsize */
1298 FALSE, /* pc_relative */
1299 0, /* bitpos */
1300 complain_overflow_dont,/* complain_on_overflow */
1301 bfd_elf_generic_reloc, /* special_function */
1302 "R_ARM_MOVW_BREL", /* name */
1303 FALSE, /* partial_inplace */
1304 0x0000ffff, /* src_mask */
1305 0x0000ffff, /* dst_mask */
1306 FALSE), /* pcrel_offset */
1307
1308 HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */
1309 0, /* rightshift */
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1311 16, /* bitsize */
1312 FALSE, /* pc_relative */
1313 0, /* bitpos */
1314 complain_overflow_dont,/* complain_on_overflow */
1315 bfd_elf_generic_reloc, /* special_function */
1316 "R_ARM_THM_MOVW_BREL_NC",/* name */
1317 FALSE, /* partial_inplace */
1318 0x040f70ff, /* src_mask */
1319 0x040f70ff, /* dst_mask */
1320 FALSE), /* pcrel_offset */
1321
1322 HOWTO (R_ARM_THM_MOVT_BREL, /* type */
1323 0, /* rightshift */
1324 2, /* size (0 = byte, 1 = short, 2 = long) */
1325 16, /* bitsize */
1326 FALSE, /* pc_relative */
1327 0, /* bitpos */
1328 complain_overflow_bitfield,/* complain_on_overflow */
1329 bfd_elf_generic_reloc, /* special_function */
1330 "R_ARM_THM_MOVT_BREL", /* name */
1331 FALSE, /* partial_inplace */
1332 0x040f70ff, /* src_mask */
1333 0x040f70ff, /* dst_mask */
1334 FALSE), /* pcrel_offset */
1335
1336 HOWTO (R_ARM_THM_MOVW_BREL, /* type */
1337 0, /* rightshift */
1338 2, /* size (0 = byte, 1 = short, 2 = long) */
1339 16, /* bitsize */
1340 FALSE, /* pc_relative */
1341 0, /* bitpos */
1342 complain_overflow_dont,/* complain_on_overflow */
1343 bfd_elf_generic_reloc, /* special_function */
1344 "R_ARM_THM_MOVW_BREL", /* name */
1345 FALSE, /* partial_inplace */
1346 0x040f70ff, /* src_mask */
1347 0x040f70ff, /* dst_mask */
1348 FALSE), /* pcrel_offset */
1349
8029a119 1350 EMPTY_HOWTO (90), /* Unallocated. */
c19d1205
ZW
1351 EMPTY_HOWTO (91),
1352 EMPTY_HOWTO (92),
1353 EMPTY_HOWTO (93),
1354
1355 HOWTO (R_ARM_PLT32_ABS, /* type */
1356 0, /* rightshift */
1357 2, /* size (0 = byte, 1 = short, 2 = long) */
1358 32, /* bitsize */
1359 FALSE, /* pc_relative */
1360 0, /* bitpos */
1361 complain_overflow_dont,/* complain_on_overflow */
1362 bfd_elf_generic_reloc, /* special_function */
1363 "R_ARM_PLT32_ABS", /* name */
1364 FALSE, /* partial_inplace */
1365 0xffffffff, /* src_mask */
1366 0xffffffff, /* dst_mask */
1367 FALSE), /* pcrel_offset */
1368
1369 HOWTO (R_ARM_GOT_ABS, /* type */
1370 0, /* rightshift */
1371 2, /* size (0 = byte, 1 = short, 2 = long) */
1372 32, /* bitsize */
1373 FALSE, /* pc_relative */
1374 0, /* bitpos */
1375 complain_overflow_dont,/* complain_on_overflow */
1376 bfd_elf_generic_reloc, /* special_function */
1377 "R_ARM_GOT_ABS", /* name */
1378 FALSE, /* partial_inplace */
1379 0xffffffff, /* src_mask */
1380 0xffffffff, /* dst_mask */
1381 FALSE), /* pcrel_offset */
1382
1383 HOWTO (R_ARM_GOT_PREL, /* type */
1384 0, /* rightshift */
1385 2, /* size (0 = byte, 1 = short, 2 = long) */
1386 32, /* bitsize */
1387 TRUE, /* pc_relative */
1388 0, /* bitpos */
1389 complain_overflow_dont, /* complain_on_overflow */
1390 bfd_elf_generic_reloc, /* special_function */
1391 "R_ARM_GOT_PREL", /* name */
1392 FALSE, /* partial_inplace */
1393 0xffffffff, /* src_mask */
1394 0xffffffff, /* dst_mask */
1395 TRUE), /* pcrel_offset */
1396
1397 HOWTO (R_ARM_GOT_BREL12, /* type */
1398 0, /* rightshift */
1399 2, /* size (0 = byte, 1 = short, 2 = long) */
1400 12, /* bitsize */
1401 FALSE, /* pc_relative */
1402 0, /* bitpos */
1403 complain_overflow_bitfield,/* complain_on_overflow */
1404 bfd_elf_generic_reloc, /* special_function */
1405 "R_ARM_GOT_BREL12", /* name */
1406 FALSE, /* partial_inplace */
1407 0x00000fff, /* src_mask */
1408 0x00000fff, /* dst_mask */
1409 FALSE), /* pcrel_offset */
1410
1411 HOWTO (R_ARM_GOTOFF12, /* type */
1412 0, /* rightshift */
1413 2, /* size (0 = byte, 1 = short, 2 = long) */
1414 12, /* bitsize */
1415 FALSE, /* pc_relative */
1416 0, /* bitpos */
1417 complain_overflow_bitfield,/* complain_on_overflow */
1418 bfd_elf_generic_reloc, /* special_function */
1419 "R_ARM_GOTOFF12", /* name */
1420 FALSE, /* partial_inplace */
1421 0x00000fff, /* src_mask */
1422 0x00000fff, /* dst_mask */
1423 FALSE), /* pcrel_offset */
1424
1425 EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */
1426
1427 /* GNU extension to record C++ vtable member usage */
1428 HOWTO (R_ARM_GNU_VTENTRY, /* type */
ba93b8ac
DJ
1429 0, /* rightshift */
1430 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205 1431 0, /* bitsize */
ba93b8ac
DJ
1432 FALSE, /* pc_relative */
1433 0, /* bitpos */
c19d1205
ZW
1434 complain_overflow_dont, /* complain_on_overflow */
1435 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1436 "R_ARM_GNU_VTENTRY", /* name */
1437 FALSE, /* partial_inplace */
1438 0, /* src_mask */
1439 0, /* dst_mask */
1440 FALSE), /* pcrel_offset */
1441
1442 /* GNU extension to record C++ vtable hierarchy */
1443 HOWTO (R_ARM_GNU_VTINHERIT, /* type */
1444 0, /* rightshift */
1445 2, /* size (0 = byte, 1 = short, 2 = long) */
1446 0, /* bitsize */
1447 FALSE, /* pc_relative */
1448 0, /* bitpos */
1449 complain_overflow_dont, /* complain_on_overflow */
1450 NULL, /* special_function */
1451 "R_ARM_GNU_VTINHERIT", /* name */
1452 FALSE, /* partial_inplace */
1453 0, /* src_mask */
1454 0, /* dst_mask */
1455 FALSE), /* pcrel_offset */
1456
1457 HOWTO (R_ARM_THM_JUMP11, /* type */
1458 1, /* rightshift */
1459 1, /* size (0 = byte, 1 = short, 2 = long) */
1460 11, /* bitsize */
1461 TRUE, /* pc_relative */
1462 0, /* bitpos */
1463 complain_overflow_signed, /* complain_on_overflow */
1464 bfd_elf_generic_reloc, /* special_function */
1465 "R_ARM_THM_JUMP11", /* name */
1466 FALSE, /* partial_inplace */
1467 0x000007ff, /* src_mask */
1468 0x000007ff, /* dst_mask */
1469 TRUE), /* pcrel_offset */
1470
1471 HOWTO (R_ARM_THM_JUMP8, /* type */
1472 1, /* rightshift */
1473 1, /* size (0 = byte, 1 = short, 2 = long) */
1474 8, /* bitsize */
1475 TRUE, /* pc_relative */
1476 0, /* bitpos */
1477 complain_overflow_signed, /* complain_on_overflow */
1478 bfd_elf_generic_reloc, /* special_function */
1479 "R_ARM_THM_JUMP8", /* name */
1480 FALSE, /* partial_inplace */
1481 0x000000ff, /* src_mask */
1482 0x000000ff, /* dst_mask */
1483 TRUE), /* pcrel_offset */
ba93b8ac 1484
c19d1205
ZW
1485 /* TLS relocations */
1486 HOWTO (R_ARM_TLS_GD32, /* type */
ba93b8ac
DJ
1487 0, /* rightshift */
1488 2, /* size (0 = byte, 1 = short, 2 = long) */
1489 32, /* bitsize */
1490 FALSE, /* pc_relative */
1491 0, /* bitpos */
1492 complain_overflow_bitfield,/* complain_on_overflow */
c19d1205
ZW
1493 NULL, /* special_function */
1494 "R_ARM_TLS_GD32", /* name */
ba93b8ac
DJ
1495 TRUE, /* partial_inplace */
1496 0xffffffff, /* src_mask */
1497 0xffffffff, /* dst_mask */
c19d1205 1498 FALSE), /* pcrel_offset */
ba93b8ac 1499
ba93b8ac
DJ
1500 HOWTO (R_ARM_TLS_LDM32, /* type */
1501 0, /* rightshift */
1502 2, /* size (0 = byte, 1 = short, 2 = long) */
1503 32, /* bitsize */
1504 FALSE, /* pc_relative */
1505 0, /* bitpos */
1506 complain_overflow_bitfield,/* complain_on_overflow */
1507 bfd_elf_generic_reloc, /* special_function */
1508 "R_ARM_TLS_LDM32", /* name */
1509 TRUE, /* partial_inplace */
1510 0xffffffff, /* src_mask */
1511 0xffffffff, /* dst_mask */
c19d1205 1512 FALSE), /* pcrel_offset */
ba93b8ac 1513
c19d1205 1514 HOWTO (R_ARM_TLS_LDO32, /* type */
ba93b8ac
DJ
1515 0, /* rightshift */
1516 2, /* size (0 = byte, 1 = short, 2 = long) */
1517 32, /* bitsize */
1518 FALSE, /* pc_relative */
1519 0, /* bitpos */
1520 complain_overflow_bitfield,/* complain_on_overflow */
1521 bfd_elf_generic_reloc, /* special_function */
c19d1205 1522 "R_ARM_TLS_LDO32", /* name */
ba93b8ac
DJ
1523 TRUE, /* partial_inplace */
1524 0xffffffff, /* src_mask */
1525 0xffffffff, /* dst_mask */
c19d1205 1526 FALSE), /* pcrel_offset */
ba93b8ac 1527
ba93b8ac
DJ
1528 HOWTO (R_ARM_TLS_IE32, /* type */
1529 0, /* rightshift */
1530 2, /* size (0 = byte, 1 = short, 2 = long) */
1531 32, /* bitsize */
1532 FALSE, /* pc_relative */
1533 0, /* bitpos */
1534 complain_overflow_bitfield,/* complain_on_overflow */
1535 NULL, /* special_function */
1536 "R_ARM_TLS_IE32", /* name */
1537 TRUE, /* partial_inplace */
1538 0xffffffff, /* src_mask */
1539 0xffffffff, /* dst_mask */
c19d1205 1540 FALSE), /* pcrel_offset */
7f266840 1541
c19d1205 1542 HOWTO (R_ARM_TLS_LE32, /* type */
7f266840
DJ
1543 0, /* rightshift */
1544 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205 1545 32, /* bitsize */
7f266840
DJ
1546 FALSE, /* pc_relative */
1547 0, /* bitpos */
c19d1205
ZW
1548 complain_overflow_bitfield,/* complain_on_overflow */
1549 bfd_elf_generic_reloc, /* special_function */
1550 "R_ARM_TLS_LE32", /* name */
1551 TRUE, /* partial_inplace */
1552 0xffffffff, /* src_mask */
1553 0xffffffff, /* dst_mask */
1554 FALSE), /* pcrel_offset */
7f266840 1555
c19d1205
ZW
1556 HOWTO (R_ARM_TLS_LDO12, /* type */
1557 0, /* rightshift */
1558 2, /* size (0 = byte, 1 = short, 2 = long) */
1559 12, /* bitsize */
1560 FALSE, /* pc_relative */
7f266840 1561 0, /* bitpos */
c19d1205 1562 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1563 bfd_elf_generic_reloc, /* special_function */
c19d1205 1564 "R_ARM_TLS_LDO12", /* name */
7f266840 1565 FALSE, /* partial_inplace */
c19d1205
ZW
1566 0x00000fff, /* src_mask */
1567 0x00000fff, /* dst_mask */
1568 FALSE), /* pcrel_offset */
7f266840 1569
c19d1205
ZW
1570 HOWTO (R_ARM_TLS_LE12, /* type */
1571 0, /* rightshift */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1573 12, /* bitsize */
1574 FALSE, /* pc_relative */
7f266840 1575 0, /* bitpos */
c19d1205 1576 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1577 bfd_elf_generic_reloc, /* special_function */
c19d1205 1578 "R_ARM_TLS_LE12", /* name */
7f266840 1579 FALSE, /* partial_inplace */
c19d1205
ZW
1580 0x00000fff, /* src_mask */
1581 0x00000fff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
7f266840 1583
c19d1205 1584 HOWTO (R_ARM_TLS_IE12GP, /* type */
7f266840
DJ
1585 0, /* rightshift */
1586 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205
ZW
1587 12, /* bitsize */
1588 FALSE, /* pc_relative */
7f266840 1589 0, /* bitpos */
c19d1205 1590 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1591 bfd_elf_generic_reloc, /* special_function */
c19d1205 1592 "R_ARM_TLS_IE12GP", /* name */
7f266840 1593 FALSE, /* partial_inplace */
c19d1205
ZW
1594 0x00000fff, /* src_mask */
1595 0x00000fff, /* dst_mask */
1596 FALSE), /* pcrel_offset */
1597};
1598
1599/* 112-127 private relocations
1600 128 R_ARM_ME_TOO, obsolete
1601 129-255 unallocated in AAELF.
7f266840 1602
c19d1205
ZW
1603 249-255 extended, currently unused, relocations: */
1604
4962c51a 1605static reloc_howto_type elf32_arm_howto_table_2[4] =
7f266840
DJ
1606{
1607 HOWTO (R_ARM_RREL32, /* type */
1608 0, /* rightshift */
1609 0, /* size (0 = byte, 1 = short, 2 = long) */
1610 0, /* bitsize */
1611 FALSE, /* pc_relative */
1612 0, /* bitpos */
1613 complain_overflow_dont,/* complain_on_overflow */
1614 bfd_elf_generic_reloc, /* special_function */
1615 "R_ARM_RREL32", /* name */
1616 FALSE, /* partial_inplace */
1617 0, /* src_mask */
1618 0, /* dst_mask */
1619 FALSE), /* pcrel_offset */
1620
1621 HOWTO (R_ARM_RABS32, /* type */
1622 0, /* rightshift */
1623 0, /* size (0 = byte, 1 = short, 2 = long) */
1624 0, /* bitsize */
1625 FALSE, /* pc_relative */
1626 0, /* bitpos */
1627 complain_overflow_dont,/* complain_on_overflow */
1628 bfd_elf_generic_reloc, /* special_function */
1629 "R_ARM_RABS32", /* name */
1630 FALSE, /* partial_inplace */
1631 0, /* src_mask */
1632 0, /* dst_mask */
1633 FALSE), /* pcrel_offset */
1634
1635 HOWTO (R_ARM_RPC24, /* type */
1636 0, /* rightshift */
1637 0, /* size (0 = byte, 1 = short, 2 = long) */
1638 0, /* bitsize */
1639 FALSE, /* pc_relative */
1640 0, /* bitpos */
1641 complain_overflow_dont,/* complain_on_overflow */
1642 bfd_elf_generic_reloc, /* special_function */
1643 "R_ARM_RPC24", /* name */
1644 FALSE, /* partial_inplace */
1645 0, /* src_mask */
1646 0, /* dst_mask */
1647 FALSE), /* pcrel_offset */
1648
1649 HOWTO (R_ARM_RBASE, /* type */
1650 0, /* rightshift */
1651 0, /* size (0 = byte, 1 = short, 2 = long) */
1652 0, /* bitsize */
1653 FALSE, /* pc_relative */
1654 0, /* bitpos */
1655 complain_overflow_dont,/* complain_on_overflow */
1656 bfd_elf_generic_reloc, /* special_function */
1657 "R_ARM_RBASE", /* name */
1658 FALSE, /* partial_inplace */
1659 0, /* src_mask */
1660 0, /* dst_mask */
1661 FALSE) /* pcrel_offset */
1662};
1663
1664static reloc_howto_type *
1665elf32_arm_howto_from_type (unsigned int r_type)
1666{
906e58ca 1667 if (r_type < ARRAY_SIZE (elf32_arm_howto_table_1))
c19d1205 1668 return &elf32_arm_howto_table_1[r_type];
ba93b8ac 1669
c19d1205 1670 if (r_type >= R_ARM_RREL32
906e58ca 1671 && r_type < R_ARM_RREL32 + ARRAY_SIZE (elf32_arm_howto_table_2))
4962c51a 1672 return &elf32_arm_howto_table_2[r_type - R_ARM_RREL32];
7f266840 1673
c19d1205 1674 return NULL;
7f266840
DJ
1675}
1676
1677static void
1678elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
1679 Elf_Internal_Rela * elf_reloc)
1680{
1681 unsigned int r_type;
1682
1683 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1684 bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
1685}
1686
1687struct elf32_arm_reloc_map
1688 {
1689 bfd_reloc_code_real_type bfd_reloc_val;
1690 unsigned char elf_reloc_val;
1691 };
1692
1693/* All entries in this list must also be present in elf32_arm_howto_table. */
1694static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
1695 {
1696 {BFD_RELOC_NONE, R_ARM_NONE},
1697 {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
39b41c9c
PB
1698 {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL},
1699 {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24},
7f266840
DJ
1700 {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
1701 {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
1702 {BFD_RELOC_32, R_ARM_ABS32},
1703 {BFD_RELOC_32_PCREL, R_ARM_REL32},
1704 {BFD_RELOC_8, R_ARM_ABS8},
1705 {BFD_RELOC_16, R_ARM_ABS16},
1706 {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
1707 {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
c19d1205
ZW
1708 {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24},
1709 {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL},
1710 {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11},
1711 {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19},
1712 {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6},
7f266840
DJ
1714 {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
1715 {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
1716 {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
c19d1205 1717 {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32},
7f266840
DJ
1718 {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
1719 {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
1720 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1721 {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1},
1722 {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32},
1723 {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32},
1724 {BFD_RELOC_ARM_PREL31, R_ARM_PREL31},
ba93b8ac
DJ
1725 {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2},
1726 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1727 {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32},
1728 {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32},
1729 {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32},
1730 {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32},
1731 {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32},
1732 {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32},
1733 {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32},
1734 {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32},
c19d1205
ZW
1735 {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT},
1736 {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY},
b6895b4f
PB
1737 {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC},
1738 {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS},
1739 {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC},
1740 {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL},
1741 {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC},
1742 {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS},
1743 {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC},
1744 {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL},
4962c51a
MS
1745 {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC},
1746 {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0},
1747 {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC},
1748 {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1},
1749 {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2},
1750 {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0},
1751 {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1},
1752 {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2},
1753 {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0},
1754 {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1},
1755 {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2},
1756 {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0},
1757 {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1},
1758 {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2},
1759 {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC},
1760 {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0},
1761 {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC},
1762 {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1},
1763 {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2},
1764 {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0},
1765 {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1},
1766 {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2},
1767 {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0},
1768 {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1},
1769 {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2},
1770 {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0},
1771 {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1},
845b51d6
PB
1772 {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2},
1773 {BFD_RELOC_ARM_V4BX, R_ARM_V4BX}
7f266840
DJ
1774 };
1775
1776static reloc_howto_type *
f1c71a59
ZW
1777elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1778 bfd_reloc_code_real_type code)
7f266840
DJ
1779{
1780 unsigned int i;
8029a119 1781
906e58ca 1782 for (i = 0; i < ARRAY_SIZE (elf32_arm_reloc_map); i ++)
c19d1205
ZW
1783 if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
1784 return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
7f266840 1785
c19d1205 1786 return NULL;
7f266840
DJ
1787}
1788
157090f7
AM
1789static reloc_howto_type *
1790elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1791 const char *r_name)
1792{
1793 unsigned int i;
1794
906e58ca 1795 for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_1); i++)
157090f7
AM
1796 if (elf32_arm_howto_table_1[i].name != NULL
1797 && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0)
1798 return &elf32_arm_howto_table_1[i];
1799
906e58ca 1800 for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_2); i++)
157090f7
AM
1801 if (elf32_arm_howto_table_2[i].name != NULL
1802 && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0)
1803 return &elf32_arm_howto_table_2[i];
1804
1805 return NULL;
1806}
1807
906e58ca
NC
1808/* Support for core dump NOTE sections. */
1809
7f266840 1810static bfd_boolean
f1c71a59 1811elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
7f266840
DJ
1812{
1813 int offset;
1814 size_t size;
1815
1816 switch (note->descsz)
1817 {
1818 default:
1819 return FALSE;
1820
8029a119 1821 case 148: /* Linux/ARM 32-bit. */
7f266840
DJ
1822 /* pr_cursig */
1823 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1824
1825 /* pr_pid */
1826 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1827
1828 /* pr_reg */
1829 offset = 72;
1830 size = 72;
1831
1832 break;
1833 }
1834
1835 /* Make a ".reg/999" section. */
1836 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1837 size, note->descpos + offset);
1838}
1839
1840static bfd_boolean
f1c71a59 1841elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
7f266840
DJ
1842{
1843 switch (note->descsz)
1844 {
1845 default:
1846 return FALSE;
1847
8029a119 1848 case 124: /* Linux/ARM elf_prpsinfo. */
7f266840
DJ
1849 elf_tdata (abfd)->core_program
1850 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1851 elf_tdata (abfd)->core_command
1852 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1853 }
1854
1855 /* Note that for some reason, a spurious space is tacked
1856 onto the end of the args in some (at least one anyway)
1857 implementations, so strip it off if it exists. */
7f266840
DJ
1858 {
1859 char *command = elf_tdata (abfd)->core_command;
1860 int n = strlen (command);
1861
1862 if (0 < n && command[n - 1] == ' ')
1863 command[n - 1] = '\0';
1864 }
1865
1866 return TRUE;
1867}
1868
1869#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1870#define TARGET_LITTLE_NAME "elf32-littlearm"
1871#define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1872#define TARGET_BIG_NAME "elf32-bigarm"
1873
1874#define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1875#define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1876
252b5132
RH
1877typedef unsigned long int insn32;
1878typedef unsigned short int insn16;
1879
3a4a14e9
PB
1880/* In lieu of proper flags, assume all EABIv4 or later objects are
1881 interworkable. */
57e8b36a 1882#define INTERWORK_FLAG(abfd) \
3a4a14e9 1883 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
85a84e7a 1884 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
9b485d32 1885
252b5132
RH
1886/* The linker script knows the section names for placement.
1887 The entry_names are used to do simple name mangling on the stubs.
1888 Given a function name, and its type, the stub can be found. The
9b485d32 1889 name can be changed. The only requirement is the %s be present. */
252b5132
RH
1890#define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1891#define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1892
1893#define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1894#define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1895
c7b8f16e
JB
1896#define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1897#define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1898
845b51d6
PB
1899#define ARM_BX_GLUE_SECTION_NAME ".v4_bx"
1900#define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d"
1901
7413f23f
DJ
1902#define STUB_ENTRY_NAME "__%s_veneer"
1903
252b5132
RH
1904/* The name of the dynamic interpreter. This is put in the .interp
1905 section. */
1906#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1907
5e681ec4
PB
1908#ifdef FOUR_WORD_PLT
1909
252b5132
RH
1910/* The first entry in a procedure linkage table looks like
1911 this. It is set up so that any shared library function that is
59f2c4e7 1912 called before the relocation has been set up calls the dynamic
9b485d32 1913 linker first. */
e5a52504 1914static const bfd_vma elf32_arm_plt0_entry [] =
5e681ec4
PB
1915 {
1916 0xe52de004, /* str lr, [sp, #-4]! */
1917 0xe59fe010, /* ldr lr, [pc, #16] */
1918 0xe08fe00e, /* add lr, pc, lr */
1919 0xe5bef008, /* ldr pc, [lr, #8]! */
1920 };
1921
1922/* Subsequent entries in a procedure linkage table look like
1923 this. */
e5a52504 1924static const bfd_vma elf32_arm_plt_entry [] =
5e681ec4
PB
1925 {
1926 0xe28fc600, /* add ip, pc, #NN */
1927 0xe28cca00, /* add ip, ip, #NN */
1928 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1929 0x00000000, /* unused */
1930 };
1931
1932#else
1933
5e681ec4
PB
1934/* The first entry in a procedure linkage table looks like
1935 this. It is set up so that any shared library function that is
1936 called before the relocation has been set up calls the dynamic
1937 linker first. */
e5a52504 1938static const bfd_vma elf32_arm_plt0_entry [] =
917583ad 1939 {
5e681ec4
PB
1940 0xe52de004, /* str lr, [sp, #-4]! */
1941 0xe59fe004, /* ldr lr, [pc, #4] */
1942 0xe08fe00e, /* add lr, pc, lr */
1943 0xe5bef008, /* ldr pc, [lr, #8]! */
1944 0x00000000, /* &GOT[0] - . */
917583ad 1945 };
252b5132
RH
1946
1947/* Subsequent entries in a procedure linkage table look like
1948 this. */
e5a52504 1949static const bfd_vma elf32_arm_plt_entry [] =
5e681ec4
PB
1950 {
1951 0xe28fc600, /* add ip, pc, #0xNN00000 */
1952 0xe28cca00, /* add ip, ip, #0xNN000 */
1953 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1954 };
1955
1956#endif
252b5132 1957
00a97672
RS
1958/* The format of the first entry in the procedure linkage table
1959 for a VxWorks executable. */
1960static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] =
1961 {
1962 0xe52dc008, /* str ip,[sp,#-8]! */
1963 0xe59fc000, /* ldr ip,[pc] */
1964 0xe59cf008, /* ldr pc,[ip,#8] */
1965 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1966 };
1967
1968/* The format of subsequent entries in a VxWorks executable. */
1969static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] =
1970 {
1971 0xe59fc000, /* ldr ip,[pc] */
1972 0xe59cf000, /* ldr pc,[ip] */
1973 0x00000000, /* .long @got */
1974 0xe59fc000, /* ldr ip,[pc] */
1975 0xea000000, /* b _PLT */
1976 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1977 };
1978
1979/* The format of entries in a VxWorks shared library. */
1980static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] =
1981 {
1982 0xe59fc000, /* ldr ip,[pc] */
1983 0xe79cf009, /* ldr pc,[ip,r9] */
1984 0x00000000, /* .long @got */
1985 0xe59fc000, /* ldr ip,[pc] */
1986 0xe599f008, /* ldr pc,[r9,#8] */
1987 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1988 };
1989
b7693d02
DJ
1990/* An initial stub used if the PLT entry is referenced from Thumb code. */
1991#define PLT_THUMB_STUB_SIZE 4
1992static const bfd_vma elf32_arm_plt_thumb_stub [] =
1993 {
1994 0x4778, /* bx pc */
1995 0x46c0 /* nop */
1996 };
1997
e5a52504
MM
1998/* The entries in a PLT when using a DLL-based target with multiple
1999 address spaces. */
906e58ca 2000static const bfd_vma elf32_arm_symbian_plt_entry [] =
e5a52504 2001 {
83a358aa 2002 0xe51ff004, /* ldr pc, [pc, #-4] */
e5a52504
MM
2003 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2004 };
2005
906e58ca
NC
2006#define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8)
2007#define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8)
2008#define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4)
2009#define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4)
2010#define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4)
2011#define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4)
2012
2013static const bfd_vma arm_long_branch_stub[] =
2014 {
2015 0xe51ff004, /* ldr pc, [pc, #-4] */
2016 0x00000000, /* dcd R_ARM_ABS32(X) */
2017 };
2018
2019static const bfd_vma arm_thumb_v4t_long_branch_stub[] =
2020 {
2021 0xe59fc000, /* ldr ip, [pc, #0] */
2022 0xe12fff1c, /* bx ip */
2023 0x00000000, /* dcd R_ARM_ABS32(X) */
2024 };
2025
2026static const bfd_vma arm_thumb_thumb_long_branch_stub[] =
2027 {
2028 0x4e02b540, /* push {r6, lr} */
2029 /* ldr r6, [pc, #8] */
7413f23f
DJ
2030 0x473046fe, /* mov lr, pc */
2031 /* bx r6 */
906e58ca
NC
2032 0xbf00bd40, /* pop {r6, pc} */
2033 /* nop */
2034 0x00000000, /* dcd R_ARM_ABS32(X) */
2035 };
2036
2037static const bfd_vma arm_thumb_arm_v4t_long_branch_stub[] =
2038 {
2039 0x4e03b540, /* push {r6, lr} */
2040 /* ldr r6, [pc, #12] */
2041 0x473046fe, /* mov lr, pc */
2042 /* bx r6 */
2043 0xe8bd4040, /* pop {r6, pc} */
2044 0xe12fff1e, /* bx lr */
2045 0x00000000, /* dcd R_ARM_ABS32(X) */
2046 };
2047
c820be07
NC
2048static const bfd_vma arm_thumb_arm_v4t_short_branch_stub[] =
2049 {
2050 0x46c04778, /* bx pc */
2051 /* nop */
2052 0xea000000, /* b (X) */
2053 };
2054
906e58ca
NC
2055static const bfd_vma arm_pic_long_branch_stub[] =
2056 {
2057 0xe59fc000, /* ldr r12, [pc] */
2058 0xe08ff00c, /* add pc, pc, ip */
7413f23f 2059 0x00000000, /* dcd R_ARM_REL32(X) */
906e58ca
NC
2060 };
2061
2062/* Section name for stubs is the associated section name plus this
2063 string. */
2064#define STUB_SUFFIX ".stub"
2065
2066enum elf32_arm_stub_type
2067{
2068 arm_stub_none,
2069 arm_stub_long_branch,
2070 arm_thumb_v4t_stub_long_branch,
2071 arm_thumb_thumb_stub_long_branch,
2072 arm_thumb_arm_v4t_stub_long_branch,
c820be07 2073 arm_thumb_arm_v4t_stub_short_branch,
906e58ca
NC
2074 arm_stub_pic_long_branch,
2075};
2076
2077struct elf32_arm_stub_hash_entry
2078{
2079 /* Base hash table entry structure. */
2080 struct bfd_hash_entry root;
2081
2082 /* The stub section. */
2083 asection *stub_sec;
2084
2085 /* Offset within stub_sec of the beginning of this stub. */
2086 bfd_vma stub_offset;
2087
2088 /* Given the symbol's value and its section we can determine its final
2089 value when building the stubs (so the stub knows where to jump). */
2090 bfd_vma target_value;
2091 asection *target_section;
2092
2093 enum elf32_arm_stub_type stub_type;
2094
2095 /* The symbol table entry, if any, that this was derived from. */
2096 struct elf32_arm_link_hash_entry *h;
2097
2098 /* Destination symbol type (STT_ARM_TFUNC, ...) */
2099 unsigned char st_type;
2100
2101 /* Where this stub is being called from, or, in the case of combined
2102 stub sections, the first input section in the group. */
2103 asection *id_sec;
7413f23f
DJ
2104
2105 /* The name for the local symbol at the start of this stub. The
2106 stub name in the hash table has to be unique; this does not, so
2107 it can be friendlier. */
2108 char *output_name;
906e58ca
NC
2109};
2110
e489d0ae
PB
2111/* Used to build a map of a section. This is required for mixed-endian
2112 code/data. */
2113
2114typedef struct elf32_elf_section_map
2115{
2116 bfd_vma vma;
2117 char type;
2118}
2119elf32_arm_section_map;
2120
c7b8f16e
JB
2121/* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2122
2123typedef enum
2124{
2125 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER,
2126 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER,
2127 VFP11_ERRATUM_ARM_VENEER,
2128 VFP11_ERRATUM_THUMB_VENEER
2129}
2130elf32_vfp11_erratum_type;
2131
2132typedef struct elf32_vfp11_erratum_list
2133{
2134 struct elf32_vfp11_erratum_list *next;
2135 bfd_vma vma;
2136 union
2137 {
2138 struct
2139 {
2140 struct elf32_vfp11_erratum_list *veneer;
2141 unsigned int vfp_insn;
2142 } b;
2143 struct
2144 {
2145 struct elf32_vfp11_erratum_list *branch;
2146 unsigned int id;
2147 } v;
2148 } u;
2149 elf32_vfp11_erratum_type type;
2150}
2151elf32_vfp11_erratum_list;
2152
8e3de13a 2153typedef struct _arm_elf_section_data
e489d0ae
PB
2154{
2155 struct bfd_elf_section_data elf;
8e3de13a 2156 unsigned int mapcount;
c7b8f16e 2157 unsigned int mapsize;
e489d0ae 2158 elf32_arm_section_map *map;
c7b8f16e
JB
2159 unsigned int erratumcount;
2160 elf32_vfp11_erratum_list *erratumlist;
8e3de13a
NC
2161}
2162_arm_elf_section_data;
e489d0ae
PB
2163
2164#define elf32_arm_section_data(sec) \
8e3de13a 2165 ((_arm_elf_section_data *) elf_section_data (sec))
e489d0ae 2166
ba93b8ac
DJ
2167/* The size of the thread control block. */
2168#define TCB_SIZE 8
2169
0ffa91dd 2170struct elf_arm_obj_tdata
ba93b8ac
DJ
2171{
2172 struct elf_obj_tdata root;
2173
2174 /* tls_type for each local got entry. */
2175 char *local_got_tls_type;
ee065d83 2176
bf21ed78
MS
2177 /* Zero to warn when linking objects with incompatible enum sizes. */
2178 int no_enum_size_warning;
a9dc9481
JM
2179
2180 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2181 int no_wchar_size_warning;
ba93b8ac
DJ
2182};
2183
0ffa91dd
NC
2184#define elf_arm_tdata(bfd) \
2185 ((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
ba93b8ac 2186
0ffa91dd
NC
2187#define elf32_arm_local_got_tls_type(bfd) \
2188 (elf_arm_tdata (bfd)->local_got_tls_type)
2189
2190#define is_arm_elf(bfd) \
2191 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2192 && elf_tdata (bfd) != NULL \
2193 && elf_object_id (bfd) == ARM_ELF_TDATA)
ba93b8ac
DJ
2194
2195static bfd_boolean
2196elf32_arm_mkobject (bfd *abfd)
2197{
0ffa91dd
NC
2198 return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata),
2199 ARM_ELF_TDATA);
ba93b8ac
DJ
2200}
2201
252b5132
RH
2202/* The ARM linker needs to keep track of the number of relocs that it
2203 decides to copy in check_relocs for each symbol. This is so that
2204 it can discard PC relative relocs if it doesn't need them when
2205 linking with -Bsymbolic. We store the information in a field
2206 extending the regular ELF linker hash table. */
2207
ba93b8ac
DJ
2208/* This structure keeps track of the number of relocs we have copied
2209 for a given symbol. */
5e681ec4 2210struct elf32_arm_relocs_copied
917583ad
NC
2211 {
2212 /* Next section. */
5e681ec4 2213 struct elf32_arm_relocs_copied * next;
917583ad
NC
2214 /* A section in dynobj. */
2215 asection * section;
2216 /* Number of relocs copied in this section. */
2217 bfd_size_type count;
ba93b8ac
DJ
2218 /* Number of PC-relative relocs copied in this section. */
2219 bfd_size_type pc_count;
917583ad 2220 };
252b5132 2221
ba93b8ac
DJ
2222#define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2223
ba96a88f 2224/* Arm ELF linker hash entry. */
252b5132 2225struct elf32_arm_link_hash_entry
917583ad
NC
2226 {
2227 struct elf_link_hash_entry root;
252b5132 2228
917583ad 2229 /* Number of PC relative relocs copied for this symbol. */
5e681ec4 2230 struct elf32_arm_relocs_copied * relocs_copied;
b7693d02
DJ
2231
2232 /* We reference count Thumb references to a PLT entry separately,
2233 so that we can emit the Thumb trampoline only if needed. */
2234 bfd_signed_vma plt_thumb_refcount;
2235
bd97cb95
DJ
2236 /* Some references from Thumb code may be eliminated by BL->BLX
2237 conversion, so record them separately. */
2238 bfd_signed_vma plt_maybe_thumb_refcount;
2239
b7693d02
DJ
2240 /* Since PLT entries have variable size if the Thumb prologue is
2241 used, we need to record the index into .got.plt instead of
2242 recomputing it from the PLT offset. */
2243 bfd_signed_vma plt_got_offset;
ba93b8ac
DJ
2244
2245#define GOT_UNKNOWN 0
2246#define GOT_NORMAL 1
2247#define GOT_TLS_GD 2
2248#define GOT_TLS_IE 4
2249 unsigned char tls_type;
a4fd1a8e
PB
2250
2251 /* The symbol marking the real symbol location for exported thumb
2252 symbols with Arm stubs. */
2253 struct elf_link_hash_entry *export_glue;
906e58ca 2254
da5938a2 2255 /* A pointer to the most recently used stub hash entry against this
8029a119 2256 symbol. */
da5938a2 2257 struct elf32_arm_stub_hash_entry *stub_cache;
917583ad 2258 };
252b5132 2259
252b5132 2260/* Traverse an arm ELF linker hash table. */
252b5132
RH
2261#define elf32_arm_link_hash_traverse(table, func, info) \
2262 (elf_link_hash_traverse \
2263 (&(table)->root, \
b7693d02 2264 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
252b5132
RH
2265 (info)))
2266
2267/* Get the ARM elf linker hash table from a link_info structure. */
2268#define elf32_arm_hash_table(info) \
2269 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2270
906e58ca
NC
2271#define arm_stub_hash_lookup(table, string, create, copy) \
2272 ((struct elf32_arm_stub_hash_entry *) \
2273 bfd_hash_lookup ((table), (string), (create), (copy)))
2274
9b485d32 2275/* ARM ELF linker hash table. */
252b5132 2276struct elf32_arm_link_hash_table
906e58ca
NC
2277{
2278 /* The main hash table. */
2279 struct elf_link_hash_table root;
252b5132 2280
906e58ca
NC
2281 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2282 bfd_size_type thumb_glue_size;
252b5132 2283
906e58ca
NC
2284 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2285 bfd_size_type arm_glue_size;
252b5132 2286
906e58ca
NC
2287 /* The size in bytes of section containing the ARMv4 BX veneers. */
2288 bfd_size_type bx_glue_size;
845b51d6 2289
906e58ca
NC
2290 /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when
2291 veneer has been populated. */
2292 bfd_vma bx_glue_offset[15];
845b51d6 2293
906e58ca
NC
2294 /* The size in bytes of the section containing glue for VFP11 erratum
2295 veneers. */
2296 bfd_size_type vfp11_erratum_glue_size;
c7b8f16e 2297
906e58ca
NC
2298 /* An arbitrary input BFD chosen to hold the glue sections. */
2299 bfd * bfd_of_glue_owner;
ba96a88f 2300
906e58ca
NC
2301 /* Nonzero to output a BE8 image. */
2302 int byteswap_code;
e489d0ae 2303
906e58ca
NC
2304 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2305 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2306 int target1_is_rel;
9c504268 2307
906e58ca
NC
2308 /* The relocation to use for R_ARM_TARGET2 relocations. */
2309 int target2_reloc;
eb043451 2310
906e58ca
NC
2311 /* 0 = Ignore R_ARM_V4BX.
2312 1 = Convert BX to MOV PC.
2313 2 = Generate v4 interworing stubs. */
2314 int fix_v4bx;
319850b4 2315
906e58ca
NC
2316 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2317 int use_blx;
33bfe774 2318
906e58ca
NC
2319 /* What sort of code sequences we should look for which may trigger the
2320 VFP11 denorm erratum. */
2321 bfd_arm_vfp11_fix vfp11_fix;
c7b8f16e 2322
906e58ca
NC
2323 /* Global counter for the number of fixes we have emitted. */
2324 int num_vfp11_fixes;
c7b8f16e 2325
906e58ca
NC
2326 /* Nonzero to force PIC branch veneers. */
2327 int pic_veneer;
27e55c4d 2328
906e58ca
NC
2329 /* The number of bytes in the initial entry in the PLT. */
2330 bfd_size_type plt_header_size;
e5a52504 2331
906e58ca
NC
2332 /* The number of bytes in the subsequent PLT etries. */
2333 bfd_size_type plt_entry_size;
e5a52504 2334
906e58ca
NC
2335 /* True if the target system is VxWorks. */
2336 int vxworks_p;
00a97672 2337
906e58ca
NC
2338 /* True if the target system is Symbian OS. */
2339 int symbian_p;
e5a52504 2340
906e58ca
NC
2341 /* True if the target uses REL relocations. */
2342 int use_rel;
4e7fd91e 2343
906e58ca
NC
2344 /* Short-cuts to get to dynamic linker sections. */
2345 asection *sgot;
2346 asection *sgotplt;
2347 asection *srelgot;
2348 asection *splt;
2349 asection *srelplt;
2350 asection *sdynbss;
2351 asection *srelbss;
5e681ec4 2352
906e58ca
NC
2353 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2354 asection *srelplt2;
00a97672 2355
906e58ca
NC
2356 /* Data for R_ARM_TLS_LDM32 relocations. */
2357 union
2358 {
2359 bfd_signed_vma refcount;
2360 bfd_vma offset;
2361 } tls_ldm_got;
b7693d02 2362
906e58ca
NC
2363 /* Small local sym to section mapping cache. */
2364 struct sym_sec_cache sym_sec;
2365
2366 /* For convenience in allocate_dynrelocs. */
2367 bfd * obfd;
2368
2369 /* The stub hash table. */
2370 struct bfd_hash_table stub_hash_table;
2371
2372 /* Linker stub bfd. */
2373 bfd *stub_bfd;
2374
2375 /* Linker call-backs. */
2376 asection * (*add_stub_section) (const char *, asection *);
2377 void (*layout_sections_again) (void);
2378
2379 /* Array to keep track of which stub sections have been created, and
2380 information on stub grouping. */
2381 struct map_stub
2382 {
2383 /* This is the section to which stubs in the group will be
2384 attached. */
2385 asection *link_sec;
2386 /* The stub section. */
2387 asection *stub_sec;
2388 } *stub_group;
2389
2390 /* Assorted information used by elf32_arm_size_stubs. */
2391 unsigned int bfd_count;
2392 int top_index;
2393 asection **input_list;
2394};
252b5132 2395
780a67af
NC
2396/* Create an entry in an ARM ELF linker hash table. */
2397
2398static struct bfd_hash_entry *
57e8b36a
NC
2399elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
2400 struct bfd_hash_table * table,
2401 const char * string)
780a67af
NC
2402{
2403 struct elf32_arm_link_hash_entry * ret =
2404 (struct elf32_arm_link_hash_entry *) entry;
2405
2406 /* Allocate the structure if it has not already been allocated by a
2407 subclass. */
906e58ca 2408 if (ret == NULL)
57e8b36a
NC
2409 ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
2410 if (ret == NULL)
780a67af
NC
2411 return (struct bfd_hash_entry *) ret;
2412
2413 /* Call the allocation method of the superclass. */
2414 ret = ((struct elf32_arm_link_hash_entry *)
2415 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2416 table, string));
57e8b36a 2417 if (ret != NULL)
b7693d02
DJ
2418 {
2419 ret->relocs_copied = NULL;
ba93b8ac 2420 ret->tls_type = GOT_UNKNOWN;
b7693d02 2421 ret->plt_thumb_refcount = 0;
bd97cb95 2422 ret->plt_maybe_thumb_refcount = 0;
b7693d02 2423 ret->plt_got_offset = -1;
a4fd1a8e 2424 ret->export_glue = NULL;
906e58ca
NC
2425
2426 ret->stub_cache = NULL;
b7693d02 2427 }
780a67af
NC
2428
2429 return (struct bfd_hash_entry *) ret;
2430}
2431
906e58ca
NC
2432/* Initialize an entry in the stub hash table. */
2433
2434static struct bfd_hash_entry *
2435stub_hash_newfunc (struct bfd_hash_entry *entry,
2436 struct bfd_hash_table *table,
2437 const char *string)
2438{
2439 /* Allocate the structure if it has not already been allocated by a
2440 subclass. */
2441 if (entry == NULL)
2442 {
2443 entry = bfd_hash_allocate (table,
2444 sizeof (struct elf32_arm_stub_hash_entry));
2445 if (entry == NULL)
2446 return entry;
2447 }
2448
2449 /* Call the allocation method of the superclass. */
2450 entry = bfd_hash_newfunc (entry, table, string);
2451 if (entry != NULL)
2452 {
2453 struct elf32_arm_stub_hash_entry *eh;
2454
2455 /* Initialize the local fields. */
2456 eh = (struct elf32_arm_stub_hash_entry *) entry;
2457 eh->stub_sec = NULL;
2458 eh->stub_offset = 0;
2459 eh->target_value = 0;
2460 eh->target_section = NULL;
2461 eh->stub_type = arm_stub_none;
2462 eh->h = NULL;
2463 eh->id_sec = NULL;
2464 }
2465
2466 return entry;
2467}
2468
00a97672
RS
2469/* Return true if NAME is the name of the relocation section associated
2470 with S. */
2471
2472static bfd_boolean
2473reloc_section_p (struct elf32_arm_link_hash_table *htab,
2474 const char *name, asection *s)
2475{
2476 if (htab->use_rel)
0112cd26 2477 return CONST_STRNEQ (name, ".rel") && strcmp (s->name, name + 4) == 0;
00a97672 2478 else
0112cd26 2479 return CONST_STRNEQ (name, ".rela") && strcmp (s->name, name + 5) == 0;
00a97672
RS
2480}
2481
2482/* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
5e681ec4
PB
2483 shortcuts to them in our hash table. */
2484
2485static bfd_boolean
57e8b36a 2486create_got_section (bfd *dynobj, struct bfd_link_info *info)
5e681ec4
PB
2487{
2488 struct elf32_arm_link_hash_table *htab;
2489
e5a52504
MM
2490 htab = elf32_arm_hash_table (info);
2491 /* BPABI objects never have a GOT, or associated sections. */
2492 if (htab->symbian_p)
2493 return TRUE;
2494
5e681ec4
PB
2495 if (! _bfd_elf_create_got_section (dynobj, info))
2496 return FALSE;
2497
5e681ec4
PB
2498 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2499 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2500 if (!htab->sgot || !htab->sgotplt)
2501 abort ();
2502
00a97672
RS
2503 htab->srelgot = bfd_make_section_with_flags (dynobj,
2504 RELOC_SECTION (htab, ".got"),
3496cb2a
L
2505 (SEC_ALLOC | SEC_LOAD
2506 | SEC_HAS_CONTENTS
2507 | SEC_IN_MEMORY
2508 | SEC_LINKER_CREATED
2509 | SEC_READONLY));
5e681ec4 2510 if (htab->srelgot == NULL
5e681ec4
PB
2511 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
2512 return FALSE;
2513 return TRUE;
2514}
2515
00a97672
RS
2516/* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2517 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
5e681ec4
PB
2518 hash table. */
2519
2520static bfd_boolean
57e8b36a 2521elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5e681ec4
PB
2522{
2523 struct elf32_arm_link_hash_table *htab;
2524
2525 htab = elf32_arm_hash_table (info);
2526 if (!htab->sgot && !create_got_section (dynobj, info))
2527 return FALSE;
2528
2529 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2530 return FALSE;
2531
2532 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
00a97672
RS
2533 htab->srelplt = bfd_get_section_by_name (dynobj,
2534 RELOC_SECTION (htab, ".plt"));
5e681ec4
PB
2535 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2536 if (!info->shared)
00a97672
RS
2537 htab->srelbss = bfd_get_section_by_name (dynobj,
2538 RELOC_SECTION (htab, ".bss"));
2539
2540 if (htab->vxworks_p)
2541 {
2542 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
2543 return FALSE;
2544
2545 if (info->shared)
2546 {
2547 htab->plt_header_size = 0;
2548 htab->plt_entry_size
2549 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry);
2550 }
2551 else
2552 {
2553 htab->plt_header_size
2554 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry);
2555 htab->plt_entry_size
2556 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry);
2557 }
2558 }
5e681ec4 2559
906e58ca 2560 if (!htab->splt
e5a52504
MM
2561 || !htab->srelplt
2562 || !htab->sdynbss
5e681ec4
PB
2563 || (!info->shared && !htab->srelbss))
2564 abort ();
2565
2566 return TRUE;
2567}
2568
906e58ca
NC
2569/* Copy the extra info we tack onto an elf_link_hash_entry. */
2570
2571static void
2572elf32_arm_copy_indirect_symbol (struct bfd_link_info *info,
2573 struct elf_link_hash_entry *dir,
2574 struct elf_link_hash_entry *ind)
2575{
2576 struct elf32_arm_link_hash_entry *edir, *eind;
2577
2578 edir = (struct elf32_arm_link_hash_entry *) dir;
2579 eind = (struct elf32_arm_link_hash_entry *) ind;
2580
2581 if (eind->relocs_copied != NULL)
2582 {
2583 if (edir->relocs_copied != NULL)
2584 {
2585 struct elf32_arm_relocs_copied **pp;
2586 struct elf32_arm_relocs_copied *p;
2587
2588 /* Add reloc counts against the indirect sym to the direct sym
2589 list. Merge any entries against the same section. */
2590 for (pp = &eind->relocs_copied; (p = *pp) != NULL; )
2591 {
2592 struct elf32_arm_relocs_copied *q;
2593
2594 for (q = edir->relocs_copied; q != NULL; q = q->next)
2595 if (q->section == p->section)
2596 {
2597 q->pc_count += p->pc_count;
2598 q->count += p->count;
2599 *pp = p->next;
2600 break;
2601 }
2602 if (q == NULL)
2603 pp = &p->next;
2604 }
2605 *pp = edir->relocs_copied;
2606 }
2607
2608 edir->relocs_copied = eind->relocs_copied;
2609 eind->relocs_copied = NULL;
2610 }
2611
2612 if (ind->root.type == bfd_link_hash_indirect)
2613 {
2614 /* Copy over PLT info. */
2615 edir->plt_thumb_refcount += eind->plt_thumb_refcount;
2616 eind->plt_thumb_refcount = 0;
2617 edir->plt_maybe_thumb_refcount += eind->plt_maybe_thumb_refcount;
2618 eind->plt_maybe_thumb_refcount = 0;
2619
2620 if (dir->got.refcount <= 0)
2621 {
2622 edir->tls_type = eind->tls_type;
2623 eind->tls_type = GOT_UNKNOWN;
2624 }
2625 }
2626
2627 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2628}
2629
2630/* Create an ARM elf linker hash table. */
2631
2632static struct bfd_link_hash_table *
2633elf32_arm_link_hash_table_create (bfd *abfd)
2634{
2635 struct elf32_arm_link_hash_table *ret;
2636 bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
2637
2638 ret = bfd_malloc (amt);
2639 if (ret == NULL)
2640 return NULL;
2641
2642 if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
2643 elf32_arm_link_hash_newfunc,
2644 sizeof (struct elf32_arm_link_hash_entry)))
2645 {
2646 free (ret);
2647 return NULL;
2648 }
2649
2650 ret->sgot = NULL;
2651 ret->sgotplt = NULL;
2652 ret->srelgot = NULL;
2653 ret->splt = NULL;
2654 ret->srelplt = NULL;
2655 ret->sdynbss = NULL;
2656 ret->srelbss = NULL;
2657 ret->srelplt2 = NULL;
2658 ret->thumb_glue_size = 0;
2659 ret->arm_glue_size = 0;
2660 ret->bx_glue_size = 0;
2661 memset (ret->bx_glue_offset, 0, sizeof (ret->bx_glue_offset));
2662 ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
2663 ret->vfp11_erratum_glue_size = 0;
2664 ret->num_vfp11_fixes = 0;
2665 ret->bfd_of_glue_owner = NULL;
2666 ret->byteswap_code = 0;
2667 ret->target1_is_rel = 0;
2668 ret->target2_reloc = R_ARM_NONE;
2669#ifdef FOUR_WORD_PLT
2670 ret->plt_header_size = 16;
2671 ret->plt_entry_size = 16;
2672#else
2673 ret->plt_header_size = 20;
2674 ret->plt_entry_size = 12;
2675#endif
2676 ret->fix_v4bx = 0;
2677 ret->use_blx = 0;
2678 ret->vxworks_p = 0;
2679 ret->symbian_p = 0;
2680 ret->use_rel = 1;
2681 ret->sym_sec.abfd = NULL;
2682 ret->obfd = abfd;
2683 ret->tls_ldm_got.refcount = 0;
6cee0a6f
L
2684 ret->stub_bfd = NULL;
2685 ret->add_stub_section = NULL;
2686 ret->layout_sections_again = NULL;
2687 ret->stub_group = NULL;
2688 ret->bfd_count = 0;
2689 ret->top_index = 0;
2690 ret->input_list = NULL;
906e58ca
NC
2691
2692 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
2693 sizeof (struct elf32_arm_stub_hash_entry)))
2694 {
2695 free (ret);
2696 return NULL;
2697 }
2698
2699 return &ret->root.root;
2700}
2701
2702/* Free the derived linker hash table. */
2703
2704static void
2705elf32_arm_hash_table_free (struct bfd_link_hash_table *hash)
2706{
2707 struct elf32_arm_link_hash_table *ret
2708 = (struct elf32_arm_link_hash_table *) hash;
2709
2710 bfd_hash_table_free (&ret->stub_hash_table);
2711 _bfd_generic_link_hash_table_free (hash);
2712}
2713
2714/* Determine if we're dealing with a Thumb only architecture. */
2715
2716static bfd_boolean
2717using_thumb_only (struct elf32_arm_link_hash_table *globals)
2718{
2719 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2720 Tag_CPU_arch);
2721 int profile;
2722
2723 if (arch != TAG_CPU_ARCH_V7)
2724 return FALSE;
2725
2726 profile = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2727 Tag_CPU_arch_profile);
2728
2729 return profile == 'M';
2730}
2731
2732/* Determine if we're dealing with a Thumb-2 object. */
2733
2734static bfd_boolean
2735using_thumb2 (struct elf32_arm_link_hash_table *globals)
2736{
2737 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2738 Tag_CPU_arch);
2739 return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7;
2740}
2741
f4ac8484
DJ
2742static bfd_boolean
2743arm_stub_is_thumb (enum elf32_arm_stub_type stub_type)
2744{
2745 switch (stub_type)
2746 {
2747 case arm_thumb_thumb_stub_long_branch:
2748 case arm_thumb_arm_v4t_stub_long_branch:
c820be07 2749 case arm_thumb_arm_v4t_stub_short_branch:
f4ac8484
DJ
2750 return TRUE;
2751 case arm_stub_none:
2752 BFD_FAIL ();
2753 return FALSE;
2754 break;
2755 default:
2756 return FALSE;
2757 }
2758}
2759
906e58ca
NC
2760/* Determine the type of stub needed, if any, for a call. */
2761
2762static enum elf32_arm_stub_type
2763arm_type_of_stub (struct bfd_link_info *info,
2764 asection *input_sec,
2765 const Elf_Internal_Rela *rel,
2766 unsigned char st_type,
2767 struct elf32_arm_link_hash_entry *hash,
c820be07
NC
2768 bfd_vma destination,
2769 asection *sym_sec,
2770 bfd *input_bfd,
2771 const char *name)
906e58ca
NC
2772{
2773 bfd_vma location;
2774 bfd_signed_vma branch_offset;
2775 unsigned int r_type;
2776 struct elf32_arm_link_hash_table * globals;
2777 int thumb2;
2778 int thumb_only;
2779 enum elf32_arm_stub_type stub_type = arm_stub_none;
2780
da5938a2 2781 /* We don't know the actual type of destination in case it is of
8029a119 2782 type STT_SECTION: give up. */
da5938a2
NC
2783 if (st_type == STT_SECTION)
2784 return stub_type;
2785
906e58ca
NC
2786 globals = elf32_arm_hash_table (info);
2787
2788 thumb_only = using_thumb_only (globals);
2789
2790 thumb2 = using_thumb2 (globals);
2791
2792 /* Determine where the call point is. */
2793 location = (input_sec->output_offset
2794 + input_sec->output_section->vma
2795 + rel->r_offset);
2796
2797 branch_offset = (bfd_signed_vma)(destination - location);
2798
2799 r_type = ELF32_R_TYPE (rel->r_info);
2800
2801 /* If the call will go through a PLT entry then we do not need
2802 glue. */
329dcd78 2803 if (globals->splt != NULL && hash != NULL && hash->root.plt.offset != (bfd_vma) -1)
906e58ca
NC
2804 return stub_type;
2805
2806 if (r_type == R_ARM_THM_CALL)
2807 {
2808 if ((!thumb2
2809 && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET
2810 || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET)))
2811 || (thumb2
2812 && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET
2813 || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))
2814 || ((st_type != STT_ARM_TFUNC) && !globals->use_blx))
2815 {
2816 if (st_type == STT_ARM_TFUNC)
2817 {
2818 /* Thumb to thumb. */
2819 if (!thumb_only)
2820 {
2821 stub_type = (info->shared | globals->pic_veneer)
2822 ? ((globals->use_blx)
2823 ? arm_stub_pic_long_branch
2824 : arm_stub_none)
2825 : (globals->use_blx)
2826 ? arm_stub_long_branch
2827 : arm_stub_none;
2828 }
2829 else
2830 {
2831 stub_type = (info->shared | globals->pic_veneer)
2832 ? arm_stub_none
2833 : (globals->use_blx)
2834 ? arm_thumb_thumb_stub_long_branch
2835 : arm_stub_none;
2836 }
2837 }
2838 else
2839 {
2840 /* Thumb to arm. */
c820be07
NC
2841 if (sym_sec != NULL
2842 && sym_sec->owner != NULL
2843 && !INTERWORK_FLAG (sym_sec->owner))
2844 {
2845 (*_bfd_error_handler)
2846 (_("%B(%s): warning: interworking not enabled.\n"
2847 " first occurrence: %B: Thumb call to ARM"),
2848 sym_sec->owner, input_bfd, name);
2849 }
2850
906e58ca
NC
2851 stub_type = (info->shared | globals->pic_veneer)
2852 ? ((globals->use_blx)
2853 ? arm_stub_pic_long_branch
2854 : arm_stub_none)
2855 : (globals->use_blx)
2856 ? arm_stub_long_branch
2857 : arm_thumb_arm_v4t_stub_long_branch;
c820be07
NC
2858
2859 /* Handle v4t short branches. */
2860 if ((stub_type == arm_thumb_arm_v4t_stub_long_branch)
2861 && (branch_offset <= THM_MAX_FWD_BRANCH_OFFSET)
2862 && (branch_offset >= THM_MAX_BWD_BRANCH_OFFSET))
2863 stub_type = arm_thumb_arm_v4t_stub_short_branch;
906e58ca
NC
2864 }
2865 }
2866 }
2867 else if (r_type == R_ARM_CALL)
2868 {
2869 if (st_type == STT_ARM_TFUNC)
2870 {
2871 /* Arm to thumb. */
c820be07
NC
2872
2873 if (sym_sec != NULL
2874 && sym_sec->owner != NULL
2875 && !INTERWORK_FLAG (sym_sec->owner))
2876 {
2877 (*_bfd_error_handler)
2878 (_("%B(%s): warning: interworking not enabled.\n"
2879 " first occurrence: %B: Thumb call to ARM"),
2880 sym_sec->owner, input_bfd, name);
2881 }
2882
2883 /* We have an extra 2-bytes reach because of
2884 the mode change (bit 24 (H) of BLX encoding). */
906e58ca
NC
2885 if (branch_offset > (ARM_MAX_FWD_BRANCH_OFFSET + 2)
2886 || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET)
2887 || !globals->use_blx)
2888 {
2889 stub_type = (info->shared | globals->pic_veneer)
2890 ? arm_stub_pic_long_branch
2891 : (globals->use_blx)
2892 ? arm_stub_long_branch
2893 : arm_thumb_v4t_stub_long_branch;
2894 }
2895 }
2896 else
2897 {
2898 /* Arm to arm. */
2899 if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET
2900 || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET))
2901 {
2902 stub_type = (info->shared | globals->pic_veneer)
2903 ? arm_stub_pic_long_branch
2904 : arm_stub_long_branch;
2905 }
2906 }
2907 }
2908
2909 return stub_type;
2910}
2911
2912/* Build a name for an entry in the stub hash table. */
2913
2914static char *
2915elf32_arm_stub_name (const asection *input_section,
2916 const asection *sym_sec,
2917 const struct elf32_arm_link_hash_entry *hash,
2918 const Elf_Internal_Rela *rel)
2919{
2920 char *stub_name;
2921 bfd_size_type len;
2922
2923 if (hash)
2924 {
2925 len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 8 + 1;
2926 stub_name = bfd_malloc (len);
2927 if (stub_name != NULL)
2928 sprintf (stub_name, "%08x_%s+%x",
2929 input_section->id & 0xffffffff,
2930 hash->root.root.root.string,
2931 (int) rel->r_addend & 0xffffffff);
2932 }
2933 else
2934 {
2935 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
2936 stub_name = bfd_malloc (len);
2937 if (stub_name != NULL)
2938 sprintf (stub_name, "%08x_%x:%x+%x",
2939 input_section->id & 0xffffffff,
2940 sym_sec->id & 0xffffffff,
2941 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
2942 (int) rel->r_addend & 0xffffffff);
2943 }
2944
2945 return stub_name;
2946}
2947
2948/* Look up an entry in the stub hash. Stub entries are cached because
2949 creating the stub name takes a bit of time. */
2950
2951static struct elf32_arm_stub_hash_entry *
2952elf32_arm_get_stub_entry (const asection *input_section,
2953 const asection *sym_sec,
2954 struct elf_link_hash_entry *hash,
2955 const Elf_Internal_Rela *rel,
2956 struct elf32_arm_link_hash_table *htab)
2957{
2958 struct elf32_arm_stub_hash_entry *stub_entry;
2959 struct elf32_arm_link_hash_entry *h = (struct elf32_arm_link_hash_entry *) hash;
2960 const asection *id_sec;
2961
2962 if ((input_section->flags & SEC_CODE) == 0)
2963 return NULL;
2964
2965 /* If this input section is part of a group of sections sharing one
2966 stub section, then use the id of the first section in the group.
2967 Stub names need to include a section id, as there may well be
2968 more than one stub used to reach say, printf, and we need to
2969 distinguish between them. */
2970 id_sec = htab->stub_group[input_section->id].link_sec;
2971
2972 if (h != NULL && h->stub_cache != NULL
2973 && h->stub_cache->h == h
2974 && h->stub_cache->id_sec == id_sec)
2975 {
2976 stub_entry = h->stub_cache;
2977 }
2978 else
2979 {
2980 char *stub_name;
2981
2982 stub_name = elf32_arm_stub_name (id_sec, sym_sec, h, rel);
2983 if (stub_name == NULL)
2984 return NULL;
2985
2986 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table,
2987 stub_name, FALSE, FALSE);
2988 if (h != NULL)
2989 h->stub_cache = stub_entry;
2990
2991 free (stub_name);
2992 }
2993
2994 return stub_entry;
2995}
2996
906e58ca
NC
2997/* Add a new stub entry to the stub hash. Not all fields of the new
2998 stub entry are initialised. */
2999
3000static struct elf32_arm_stub_hash_entry *
3001elf32_arm_add_stub (const char *stub_name,
3002 asection *section,
da5938a2 3003 struct elf32_arm_link_hash_table *htab)
906e58ca
NC
3004{
3005 asection *link_sec;
3006 asection *stub_sec;
3007 struct elf32_arm_stub_hash_entry *stub_entry;
3008
3009 link_sec = htab->stub_group[section->id].link_sec;
3010 stub_sec = htab->stub_group[section->id].stub_sec;
3011 if (stub_sec == NULL)
3012 {
3013 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3014 if (stub_sec == NULL)
3015 {
3016 size_t namelen;
3017 bfd_size_type len;
3018 char *s_name;
3019
3020 namelen = strlen (link_sec->name);
3021 len = namelen + sizeof (STUB_SUFFIX);
3022 s_name = bfd_alloc (htab->stub_bfd, len);
3023 if (s_name == NULL)
3024 return NULL;
3025
3026 memcpy (s_name, link_sec->name, namelen);
3027 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3028 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3029 if (stub_sec == NULL)
3030 return NULL;
3031 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3032 }
3033 htab->stub_group[section->id].stub_sec = stub_sec;
3034 }
3035
3036 /* Enter this entry into the linker stub hash table. */
3037 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3038 TRUE, FALSE);
3039 if (stub_entry == NULL)
3040 {
3041 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
3042 section->owner,
3043 stub_name);
3044 return NULL;
3045 }
3046
3047 stub_entry->stub_sec = stub_sec;
3048 stub_entry->stub_offset = 0;
3049 stub_entry->id_sec = link_sec;
3050
906e58ca
NC
3051 return stub_entry;
3052}
3053
3054/* Store an Arm insn into an output section not processed by
3055 elf32_arm_write_section. */
3056
3057static void
8029a119
NC
3058put_arm_insn (struct elf32_arm_link_hash_table * htab,
3059 bfd * output_bfd, bfd_vma val, void * ptr)
906e58ca
NC
3060{
3061 if (htab->byteswap_code != bfd_little_endian (output_bfd))
3062 bfd_putl32 (val, ptr);
3063 else
3064 bfd_putb32 (val, ptr);
3065}
3066
3067/* Store a 16-bit Thumb insn into an output section not processed by
3068 elf32_arm_write_section. */
3069
3070static void
8029a119
NC
3071put_thumb_insn (struct elf32_arm_link_hash_table * htab,
3072 bfd * output_bfd, bfd_vma val, void * ptr)
906e58ca
NC
3073{
3074 if (htab->byteswap_code != bfd_little_endian (output_bfd))
3075 bfd_putl16 (val, ptr);
3076 else
3077 bfd_putb16 (val, ptr);
3078}
3079
3080static bfd_boolean
3081arm_build_one_stub (struct bfd_hash_entry *gen_entry,
3082 void * in_arg)
3083{
3084 struct elf32_arm_stub_hash_entry *stub_entry;
3085 struct bfd_link_info *info;
3086 struct elf32_arm_link_hash_table *htab;
3087 asection *stub_sec;
3088 bfd *stub_bfd;
3089 bfd_vma stub_addr;
3090 bfd_byte *loc;
3091 bfd_vma sym_value;
3092 int template_size;
3093 int size;
3094 const bfd_vma *template;
3095 int i;
3096 struct elf32_arm_link_hash_table * globals;
3097
3098 /* Massage our args to the form they really have. */
3099 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
3100 info = (struct bfd_link_info *) in_arg;
3101
3102 globals = elf32_arm_hash_table (info);
3103
3104 htab = elf32_arm_hash_table (info);
3105 stub_sec = stub_entry->stub_sec;
3106
3107 /* Make a note of the offset within the stubs for this entry. */
3108 stub_entry->stub_offset = stub_sec->size;
3109 loc = stub_sec->contents + stub_entry->stub_offset;
3110
3111 stub_bfd = stub_sec->owner;
3112
3113 /* This is the address of the start of the stub. */
3114 stub_addr = stub_sec->output_section->vma + stub_sec->output_offset
3115 + stub_entry->stub_offset;
3116
3117 /* This is the address of the stub destination. */
3118 sym_value = (stub_entry->target_value
3119 + stub_entry->target_section->output_offset
3120 + stub_entry->target_section->output_section->vma);
3121
3122 switch (stub_entry->stub_type)
3123 {
3124 case arm_stub_long_branch:
3125 template = arm_long_branch_stub;
3126 template_size = (sizeof (arm_long_branch_stub) / sizeof (bfd_vma)) * 4;
3127 break;
3128 case arm_thumb_v4t_stub_long_branch:
3129 template = arm_thumb_v4t_long_branch_stub;
3130 template_size = (sizeof (arm_thumb_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3131 break;
3132 case arm_thumb_thumb_stub_long_branch:
3133 template = arm_thumb_thumb_long_branch_stub;
3134 template_size = (sizeof (arm_thumb_thumb_long_branch_stub) / sizeof (bfd_vma)) * 4;
3135 break;
3136 case arm_thumb_arm_v4t_stub_long_branch:
3137 template = arm_thumb_arm_v4t_long_branch_stub;
3138 template_size = (sizeof (arm_thumb_arm_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3139 break;
c820be07
NC
3140 case arm_thumb_arm_v4t_stub_short_branch:
3141 template = arm_thumb_arm_v4t_short_branch_stub;
3142 template_size = (sizeof(arm_thumb_arm_v4t_short_branch_stub) / sizeof (bfd_vma)) * 4;
3143 break;
906e58ca
NC
3144 case arm_stub_pic_long_branch:
3145 template = arm_pic_long_branch_stub;
3146 template_size = (sizeof (arm_pic_long_branch_stub) / sizeof (bfd_vma)) * 4;
3147 break;
3148 default:
3149 BFD_FAIL ();
3150 return FALSE;
3151 }
3152
3153 size = 0;
3154 for (i = 0; i < (template_size / 4); i++)
3155 {
3156 /* A 0 pattern is a placeholder, every other pattern is an
3157 instruction. */
3158 if (template[i] != 0)
3159 put_arm_insn (globals, stub_bfd, template[i], loc + size);
3160 else
3161 bfd_put_32 (stub_bfd, template[i], loc + size);
3162
3163 size += 4;
3164 }
3165 stub_sec->size += size;
3166
3167 /* Destination is Thumb. Force bit 0 to 1 to reflect this. */
3168 if (stub_entry->st_type == STT_ARM_TFUNC)
3169 sym_value |= 1;
3170
3171 switch (stub_entry->stub_type)
3172 {
3173 case arm_stub_long_branch:
3174 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
7413f23f
DJ
3175 stub_bfd, stub_sec, stub_sec->contents,
3176 stub_entry->stub_offset + 4, sym_value, 0);
906e58ca
NC
3177 break;
3178 case arm_thumb_v4t_stub_long_branch:
3179 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
7413f23f
DJ
3180 stub_bfd, stub_sec, stub_sec->contents,
3181 stub_entry->stub_offset + 8, sym_value, 0);
906e58ca
NC
3182 break;
3183 case arm_thumb_thumb_stub_long_branch:
3184 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
7413f23f
DJ
3185 stub_bfd, stub_sec, stub_sec->contents,
3186 stub_entry->stub_offset + 12, sym_value, 0);
906e58ca
NC
3187 break;
3188 case arm_thumb_arm_v4t_stub_long_branch:
3189 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_ABS32),
7413f23f
DJ
3190 stub_bfd, stub_sec, stub_sec->contents,
3191 stub_entry->stub_offset + 16, sym_value, 0);
906e58ca 3192 break;
c820be07
NC
3193 case arm_thumb_arm_v4t_stub_short_branch:
3194 {
3195 long int rel_offset;
3196 static const insn32 t2a3_b_insn = 0xea000000;
3197
3198 rel_offset = sym_value - (stub_addr + 8 + 4);
3199
3200 put_arm_insn (globals, stub_bfd,
3201 (bfd_vma) t2a3_b_insn | ((rel_offset >> 2) & 0x00FFFFFF),
3202 loc + 4);
3203 }
3204 break;
3205
906e58ca
NC
3206 case arm_stub_pic_long_branch:
3207 /* We want the value relative to the address 8 bytes from the
3208 start of the stub. */
7413f23f
DJ
3209 _bfd_final_link_relocate (elf32_arm_howto_from_type (R_ARM_REL32),
3210 stub_bfd, stub_sec, stub_sec->contents,
3211 stub_entry->stub_offset + 8, sym_value, 0);
906e58ca
NC
3212 break;
3213 default:
3214 break;
3215 }
3216
3217 return TRUE;
3218}
3219
3220/* As above, but don't actually build the stub. Just bump offset so
3221 we know stub section sizes. */
3222
3223static bfd_boolean
3224arm_size_one_stub (struct bfd_hash_entry *gen_entry,
3225 void * in_arg)
3226{
3227 struct elf32_arm_stub_hash_entry *stub_entry;
3228 struct elf32_arm_link_hash_table *htab;
3229 const bfd_vma *template;
3230 int template_size;
3231 int size;
3232 int i;
3233
3234 /* Massage our args to the form they really have. */
3235 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
3236 htab = (struct elf32_arm_link_hash_table *) in_arg;
3237
3238 switch (stub_entry->stub_type)
3239 {
3240 case arm_stub_long_branch:
3241 template = arm_long_branch_stub;
3242 template_size = (sizeof (arm_long_branch_stub) / sizeof (bfd_vma)) * 4;
3243 break;
3244 case arm_thumb_v4t_stub_long_branch:
3245 template = arm_thumb_v4t_long_branch_stub;
3246 template_size = (sizeof (arm_thumb_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3247 break;
3248 case arm_thumb_thumb_stub_long_branch:
3249 template = arm_thumb_thumb_long_branch_stub;
3250 template_size = (sizeof (arm_thumb_thumb_long_branch_stub) / sizeof (bfd_vma)) * 4;
3251 break;
3252 case arm_thumb_arm_v4t_stub_long_branch:
3253 template = arm_thumb_arm_v4t_long_branch_stub;
3254 template_size = (sizeof (arm_thumb_arm_v4t_long_branch_stub) / sizeof (bfd_vma)) * 4;
3255 break;
c820be07
NC
3256 case arm_thumb_arm_v4t_stub_short_branch:
3257 template = arm_thumb_arm_v4t_short_branch_stub;
3258 template_size = (sizeof(arm_thumb_arm_v4t_short_branch_stub) / sizeof (bfd_vma)) * 4;
3259 break;
906e58ca
NC
3260 case arm_stub_pic_long_branch:
3261 template = arm_pic_long_branch_stub;
3262 template_size = (sizeof (arm_pic_long_branch_stub) / sizeof (bfd_vma)) * 4;
3263 break;
3264 default:
3265 BFD_FAIL ();
3266 return FALSE;
3267 break;
3268 }
3269
3270 size = 0;
3271 for (i = 0; i < (template_size / 4); i++)
3272 size += 4;
3273 size = (size + 7) & ~7;
3274 stub_entry->stub_sec->size += size;
3275 return TRUE;
3276}
3277
3278/* External entry points for sizing and building linker stubs. */
3279
3280/* Set up various things so that we can make a list of input sections
3281 for each output section included in the link. Returns -1 on error,
3282 0 when no stubs will be needed, and 1 on success. */
3283
3284int
3285elf32_arm_setup_section_lists (bfd *output_bfd,
3286 struct bfd_link_info *info)
3287{
3288 bfd *input_bfd;
3289 unsigned int bfd_count;
3290 int top_id, top_index;
3291 asection *section;
3292 asection **input_list, **list;
3293 bfd_size_type amt;
3294 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3295
3296 if (! is_elf_hash_table (htab))
3297 return 0;
3298
3299 /* Count the number of input BFDs and find the top input section id. */
3300 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
3301 input_bfd != NULL;
3302 input_bfd = input_bfd->link_next)
3303 {
3304 bfd_count += 1;
3305 for (section = input_bfd->sections;
3306 section != NULL;
3307 section = section->next)
3308 {
3309 if (top_id < section->id)
3310 top_id = section->id;
3311 }
3312 }
3313 htab->bfd_count = bfd_count;
3314
3315 amt = sizeof (struct map_stub) * (top_id + 1);
3316 htab->stub_group = bfd_zmalloc (amt);
3317 if (htab->stub_group == NULL)
3318 return -1;
3319
3320 /* We can't use output_bfd->section_count here to find the top output
3321 section index as some sections may have been removed, and
3322 _bfd_strip_section_from_output doesn't renumber the indices. */
3323 for (section = output_bfd->sections, top_index = 0;
3324 section != NULL;
3325 section = section->next)
3326 {
3327 if (top_index < section->index)
3328 top_index = section->index;
3329 }
3330
3331 htab->top_index = top_index;
3332 amt = sizeof (asection *) * (top_index + 1);
3333 input_list = bfd_malloc (amt);
3334 htab->input_list = input_list;
3335 if (input_list == NULL)
3336 return -1;
3337
3338 /* For sections we aren't interested in, mark their entries with a
3339 value we can check later. */
3340 list = input_list + top_index;
3341 do
3342 *list = bfd_abs_section_ptr;
3343 while (list-- != input_list);
3344
3345 for (section = output_bfd->sections;
3346 section != NULL;
3347 section = section->next)
3348 {
3349 if ((section->flags & SEC_CODE) != 0)
3350 input_list[section->index] = NULL;
3351 }
3352
3353 return 1;
3354}
3355
3356/* The linker repeatedly calls this function for each input section,
3357 in the order that input sections are linked into output sections.
3358 Build lists of input sections to determine groupings between which
3359 we may insert linker stubs. */
3360
3361void
3362elf32_arm_next_input_section (struct bfd_link_info *info,
3363 asection *isec)
3364{
3365 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3366
3367 if (isec->output_section->index <= htab->top_index)
3368 {
3369 asection **list = htab->input_list + isec->output_section->index;
3370
3371 if (*list != bfd_abs_section_ptr)
3372 {
3373 /* Steal the link_sec pointer for our list. */
3374#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3375 /* This happens to make the list in reverse order,
3376 which is what we want. */
3377 PREV_SEC (isec) = *list;
3378 *list = isec;
3379 }
3380 }
3381}
3382
3383/* See whether we can group stub sections together. Grouping stub
3384 sections may result in fewer stubs. More importantly, we need to
3385 put all .init* and .fini* stubs at the beginning of the .init or
3386 .fini output sections respectively, because glibc splits the
3387 _init and _fini functions into multiple parts. Putting a stub in
3388 the middle of a function is not a good idea. */
3389
3390static void
3391group_sections (struct elf32_arm_link_hash_table *htab,
3392 bfd_size_type stub_group_size,
3393 bfd_boolean stubs_always_before_branch)
3394{
3395 asection **list = htab->input_list + htab->top_index;
3396
3397 do
3398 {
3399 asection *tail = *list;
3400
3401 if (tail == bfd_abs_section_ptr)
3402 continue;
3403
3404 while (tail != NULL)
3405 {
3406 asection *curr;
3407 asection *prev;
3408 bfd_size_type total;
3409
3410 curr = tail;
3411 total = tail->size;
3412 while ((prev = PREV_SEC (curr)) != NULL
3413 && ((total += curr->output_offset - prev->output_offset)
3414 < stub_group_size))
3415 curr = prev;
3416
3417 /* OK, the size from the start of CURR to the end is less
3418 than stub_group_size and thus can be handled by one stub
7fb9f789 3419 section. (Or the tail section is itself larger than
906e58ca
NC
3420 stub_group_size, in which case we may be toast.)
3421 We should really be keeping track of the total size of
3422 stubs added here, as stubs contribute to the final output
7fb9f789 3423 section size. */
906e58ca
NC
3424 do
3425 {
3426 prev = PREV_SEC (tail);
3427 /* Set up this stub group. */
3428 htab->stub_group[tail->id].link_sec = curr;
3429 }
3430 while (tail != curr && (tail = prev) != NULL);
3431
3432 /* But wait, there's more! Input sections up to stub_group_size
3433 bytes before the stub section can be handled by it too. */
3434 if (!stubs_always_before_branch)
3435 {
3436 total = 0;
3437 while (prev != NULL
3438 && ((total += tail->output_offset - prev->output_offset)
3439 < stub_group_size))
3440 {
3441 tail = prev;
3442 prev = PREV_SEC (tail);
3443 htab->stub_group[tail->id].link_sec = curr;
3444 }
3445 }
3446 tail = prev;
3447 }
3448 }
3449 while (list-- != htab->input_list);
3450
3451 free (htab->input_list);
3452#undef PREV_SEC
3453}
3454
3455/* Determine and set the size of the stub section for a final link.
3456
3457 The basic idea here is to examine all the relocations looking for
3458 PC-relative calls to a target that is unreachable with a "bl"
3459 instruction. */
3460
3461bfd_boolean
3462elf32_arm_size_stubs (bfd *output_bfd,
3463 bfd *stub_bfd,
3464 struct bfd_link_info *info,
3465 bfd_signed_vma group_size,
3466 asection * (*add_stub_section) (const char *, asection *),
3467 void (*layout_sections_again) (void))
3468{
3469 bfd_size_type stub_group_size;
3470 bfd_boolean stubs_always_before_branch;
3471 bfd_boolean stub_changed = 0;
3472 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3473
3474 /* Propagate mach to stub bfd, because it may not have been
3475 finalized when we created stub_bfd. */
3476 bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
3477 bfd_get_mach (output_bfd));
3478
3479 /* Stash our params away. */
3480 htab->stub_bfd = stub_bfd;
3481 htab->add_stub_section = add_stub_section;
3482 htab->layout_sections_again = layout_sections_again;
3483 stubs_always_before_branch = group_size < 0;
3484 if (group_size < 0)
3485 stub_group_size = -group_size;
3486 else
3487 stub_group_size = group_size;
3488
3489 if (stub_group_size == 1)
3490 {
3491 /* Default values. */
3492 /* Thumb branch range is +-4MB has to be used as the default
3493 maximum size (a given section can contain both ARM and Thumb
3494 code, so the worst case has to be taken into account).
3495
3496 This value is 24K less than that, which allows for 2025
3497 12-byte stubs. If we exceed that, then we will fail to link.
3498 The user will have to relink with an explicit group size
3499 option. */
3500 stub_group_size = 4170000;
3501 }
3502
3503 group_sections (htab, stub_group_size, stubs_always_before_branch);
3504
3505 while (1)
3506 {
3507 bfd *input_bfd;
3508 unsigned int bfd_indx;
3509 asection *stub_sec;
3510
3511 for (input_bfd = info->input_bfds, bfd_indx = 0;
3512 input_bfd != NULL;
3513 input_bfd = input_bfd->link_next, bfd_indx++)
3514 {
3515 Elf_Internal_Shdr *symtab_hdr;
3516 asection *section;
3517 Elf_Internal_Sym *local_syms = NULL;
3518
3519 /* We'll need the symbol table in a second. */
3520 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3521 if (symtab_hdr->sh_info == 0)
3522 continue;
3523
3524 /* Walk over each section attached to the input bfd. */
3525 for (section = input_bfd->sections;
3526 section != NULL;
3527 section = section->next)
3528 {
3529 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
3530
3531 /* If there aren't any relocs, then there's nothing more
3532 to do. */
3533 if ((section->flags & SEC_RELOC) == 0
3534 || section->reloc_count == 0
3535 || (section->flags & SEC_CODE) == 0)
3536 continue;
3537
3538 /* If this section is a link-once section that will be
3539 discarded, then don't create any stubs. */
3540 if (section->output_section == NULL
3541 || section->output_section->owner != output_bfd)
3542 continue;
3543
3544 /* Get the relocs. */
3545 internal_relocs
3546 = _bfd_elf_link_read_relocs (input_bfd, section, NULL,
3547 NULL, info->keep_memory);
3548 if (internal_relocs == NULL)
3549 goto error_ret_free_local;
3550
3551 /* Now examine each relocation. */
3552 irela = internal_relocs;
3553 irelaend = irela + section->reloc_count;
3554 for (; irela < irelaend; irela++)
3555 {
3556 unsigned int r_type, r_indx;
3557 enum elf32_arm_stub_type stub_type;
3558 struct elf32_arm_stub_hash_entry *stub_entry;
3559 asection *sym_sec;
3560 bfd_vma sym_value;
3561 bfd_vma destination;
3562 struct elf32_arm_link_hash_entry *hash;
7413f23f 3563 const char *sym_name;
906e58ca
NC
3564 char *stub_name;
3565 const asection *id_sec;
3566 unsigned char st_type;
3567
3568 r_type = ELF32_R_TYPE (irela->r_info);
3569 r_indx = ELF32_R_SYM (irela->r_info);
3570
3571 if (r_type >= (unsigned int) R_ARM_max)
3572 {
3573 bfd_set_error (bfd_error_bad_value);
3574 error_ret_free_internal:
3575 if (elf_section_data (section)->relocs == NULL)
3576 free (internal_relocs);
3577 goto error_ret_free_local;
3578 }
3579
3580 /* Only look for stubs on call instructions. */
3581 if ((r_type != (unsigned int) R_ARM_CALL)
3582 && (r_type != (unsigned int) R_ARM_THM_CALL))
3583 continue;
3584
3585 /* Now determine the call target, its name, value,
3586 section. */
3587 sym_sec = NULL;
3588 sym_value = 0;
3589 destination = 0;
3590 hash = NULL;
7413f23f 3591 sym_name = NULL;
906e58ca
NC
3592 if (r_indx < symtab_hdr->sh_info)
3593 {
3594 /* It's a local symbol. */
3595 Elf_Internal_Sym *sym;
3596 Elf_Internal_Shdr *hdr;
3597
3598 if (local_syms == NULL)
3599 {
3600 local_syms
3601 = (Elf_Internal_Sym *) symtab_hdr->contents;
3602 if (local_syms == NULL)
3603 local_syms
3604 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3605 symtab_hdr->sh_info, 0,
3606 NULL, NULL, NULL);
3607 if (local_syms == NULL)
3608 goto error_ret_free_internal;
3609 }
3610
3611 sym = local_syms + r_indx;
3612 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
3613 sym_sec = hdr->bfd_section;
3614 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
3615 sym_value = sym->st_value;
3616 destination = (sym_value + irela->r_addend
3617 + sym_sec->output_offset
3618 + sym_sec->output_section->vma);
3619 st_type = ELF_ST_TYPE (sym->st_info);
7413f23f
DJ
3620 sym_name
3621 = bfd_elf_string_from_elf_section (input_bfd,
3622 symtab_hdr->sh_link,
3623 sym->st_name);
906e58ca
NC
3624 }
3625 else
3626 {
3627 /* It's an external symbol. */
3628 int e_indx;
3629
3630 e_indx = r_indx - symtab_hdr->sh_info;
3631 hash = ((struct elf32_arm_link_hash_entry *)
3632 elf_sym_hashes (input_bfd)[e_indx]);
3633
3634 while (hash->root.root.type == bfd_link_hash_indirect
3635 || hash->root.root.type == bfd_link_hash_warning)
3636 hash = ((struct elf32_arm_link_hash_entry *)
3637 hash->root.root.u.i.link);
3638
3639 if (hash->root.root.type == bfd_link_hash_defined
3640 || hash->root.root.type == bfd_link_hash_defweak)
3641 {
3642 sym_sec = hash->root.root.u.def.section;
3643 sym_value = hash->root.root.u.def.value;
3644 if (sym_sec->output_section != NULL)
3645 destination = (sym_value + irela->r_addend
3646 + sym_sec->output_offset
3647 + sym_sec->output_section->vma);
3648 }
3649 else if (hash->root.root.type == bfd_link_hash_undefweak
3650 || hash->root.root.type == bfd_link_hash_undefined)
3651 /* For a shared library, these will need a PLT stub,
3652 which is treated separately.
3653 For absolute code, they cannot be handled. */
3654 continue;
3655 else
3656 {
3657 bfd_set_error (bfd_error_bad_value);
3658 goto error_ret_free_internal;
3659 }
3660 st_type = ELF_ST_TYPE (hash->root.type);
7413f23f 3661 sym_name = hash->root.root.root.string;
906e58ca
NC
3662 }
3663
3664 /* Determine what (if any) linker stub is needed. */
3665 stub_type = arm_type_of_stub (info, section, irela, st_type,
c820be07
NC
3666 hash, destination, sym_sec,
3667 input_bfd, sym_name);
906e58ca
NC
3668 if (stub_type == arm_stub_none)
3669 continue;
5e681ec4 3670
906e58ca
NC
3671 /* Support for grouping stub sections. */
3672 id_sec = htab->stub_group[section->id].link_sec;
5e681ec4 3673
906e58ca
NC
3674 /* Get the name of this stub. */
3675 stub_name = elf32_arm_stub_name (id_sec, sym_sec, hash, irela);
3676 if (!stub_name)
3677 goto error_ret_free_internal;
5e681ec4 3678
906e58ca
NC
3679 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table,
3680 stub_name,
3681 FALSE, FALSE);
3682 if (stub_entry != NULL)
3683 {
3684 /* The proper stub has already been created. */
3685 free (stub_name);
3686 continue;
3687 }
5e681ec4 3688
da5938a2 3689 stub_entry = elf32_arm_add_stub (stub_name, section, htab);
906e58ca
NC
3690 if (stub_entry == NULL)
3691 {
3692 free (stub_name);
3693 goto error_ret_free_internal;
3694 }
5e681ec4 3695
906e58ca
NC
3696 stub_entry->target_value = sym_value;
3697 stub_entry->target_section = sym_sec;
3698 stub_entry->stub_type = stub_type;
3699 stub_entry->h = hash;
3700 stub_entry->st_type = st_type;
7413f23f
DJ
3701
3702 if (sym_name == NULL)
3703 sym_name = "unnamed";
3704 stub_entry->output_name
3705 = bfd_alloc (htab->stub_bfd,
3706 sizeof (THUMB2ARM_GLUE_ENTRY_NAME)
3707 + strlen (sym_name));
3708 if (stub_entry->output_name == NULL)
3709 {
3710 free (stub_name);
3711 goto error_ret_free_internal;
3712 }
3713
3714 /* For historical reasons, use the existing names for
3715 ARM-to-Thumb and Thumb-to-ARM stubs. */
3716 if (r_type == (unsigned int) R_ARM_THM_CALL
3717 && st_type != STT_ARM_TFUNC)
3718 sprintf (stub_entry->output_name, THUMB2ARM_GLUE_ENTRY_NAME,
3719 sym_name);
3720 else if (r_type == (unsigned int) R_ARM_CALL
3721 && st_type == STT_ARM_TFUNC)
3722 sprintf (stub_entry->output_name, ARM2THUMB_GLUE_ENTRY_NAME,
3723 sym_name);
3724 else
3725 sprintf (stub_entry->output_name, STUB_ENTRY_NAME,
3726 sym_name);
3727
906e58ca
NC
3728 stub_changed = TRUE;
3729 }
3730
3731 /* We're done with the internal relocs, free them. */
3732 if (elf_section_data (section)->relocs == NULL)
3733 free (internal_relocs);
5e681ec4 3734 }
5e681ec4
PB
3735 }
3736
906e58ca
NC
3737 if (!stub_changed)
3738 break;
5e681ec4 3739
906e58ca
NC
3740 /* OK, we've added some stubs. Find out the new size of the
3741 stub sections. */
3742 for (stub_sec = htab->stub_bfd->sections;
3743 stub_sec != NULL;
3744 stub_sec = stub_sec->next)
3745 stub_sec->size = 0;
b34b2d70 3746
906e58ca
NC
3747 bfd_hash_traverse (&htab->stub_hash_table, arm_size_one_stub, htab);
3748
3749 /* Ask the linker to do its stuff. */
3750 (*htab->layout_sections_again) ();
3751 stub_changed = FALSE;
ba93b8ac
DJ
3752 }
3753
906e58ca
NC
3754 return TRUE;
3755
3756 error_ret_free_local:
3757 return FALSE;
5e681ec4
PB
3758}
3759
906e58ca
NC
3760/* Build all the stubs associated with the current output file. The
3761 stubs are kept in a hash table attached to the main linker hash
3762 table. We also set up the .plt entries for statically linked PIC
3763 functions here. This function is called via arm_elf_finish in the
3764 linker. */
252b5132 3765
906e58ca
NC
3766bfd_boolean
3767elf32_arm_build_stubs (struct bfd_link_info *info)
252b5132 3768{
906e58ca
NC
3769 asection *stub_sec;
3770 struct bfd_hash_table *table;
3771 struct elf32_arm_link_hash_table *htab;
252b5132 3772
906e58ca 3773 htab = elf32_arm_hash_table (info);
252b5132 3774
906e58ca
NC
3775 for (stub_sec = htab->stub_bfd->sections;
3776 stub_sec != NULL;
3777 stub_sec = stub_sec->next)
252b5132 3778 {
906e58ca
NC
3779 bfd_size_type size;
3780
8029a119 3781 /* Ignore non-stub sections. */
906e58ca
NC
3782 if (!strstr (stub_sec->name, STUB_SUFFIX))
3783 continue;
3784
3785 /* Allocate memory to hold the linker stubs. */
3786 size = stub_sec->size;
3787 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
3788 if (stub_sec->contents == NULL && size != 0)
3789 return FALSE;
3790 stub_sec->size = 0;
252b5132
RH
3791 }
3792
906e58ca
NC
3793 /* Build the stubs as directed by the stub hash table. */
3794 table = &htab->stub_hash_table;
3795 bfd_hash_traverse (table, arm_build_one_stub, info);
252b5132 3796
906e58ca 3797 return TRUE;
252b5132
RH
3798}
3799
9b485d32
NC
3800/* Locate the Thumb encoded calling stub for NAME. */
3801
252b5132 3802static struct elf_link_hash_entry *
57e8b36a
NC
3803find_thumb_glue (struct bfd_link_info *link_info,
3804 const char *name,
f2a9dd69 3805 char **error_message)
252b5132
RH
3806{
3807 char *tmp_name;
3808 struct elf_link_hash_entry *hash;
3809 struct elf32_arm_link_hash_table *hash_table;
3810
3811 /* We need a pointer to the armelf specific hash table. */
3812 hash_table = elf32_arm_hash_table (link_info);
3813
57e8b36a
NC
3814 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
3815 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
252b5132
RH
3816
3817 BFD_ASSERT (tmp_name);
3818
3819 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
3820
3821 hash = elf_link_hash_lookup
b34976b6 3822 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132 3823
b1657152
AM
3824 if (hash == NULL
3825 && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"),
3826 tmp_name, name) == -1)
3827 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
252b5132
RH
3828
3829 free (tmp_name);
3830
3831 return hash;
3832}
3833
9b485d32
NC
3834/* Locate the ARM encoded calling stub for NAME. */
3835
252b5132 3836static struct elf_link_hash_entry *
57e8b36a
NC
3837find_arm_glue (struct bfd_link_info *link_info,
3838 const char *name,
f2a9dd69 3839 char **error_message)
252b5132
RH
3840{
3841 char *tmp_name;
3842 struct elf_link_hash_entry *myh;
3843 struct elf32_arm_link_hash_table *hash_table;
3844
3845 /* We need a pointer to the elfarm specific hash table. */
3846 hash_table = elf32_arm_hash_table (link_info);
3847
57e8b36a
NC
3848 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
3849 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH
3850
3851 BFD_ASSERT (tmp_name);
3852
3853 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
3854
3855 myh = elf_link_hash_lookup
b34976b6 3856 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132 3857
b1657152
AM
3858 if (myh == NULL
3859 && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"),
3860 tmp_name, name) == -1)
3861 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
252b5132
RH
3862
3863 free (tmp_name);
3864
3865 return myh;
3866}
3867
8f6277f5 3868/* ARM->Thumb glue (static images):
252b5132
RH
3869
3870 .arm
3871 __func_from_arm:
3872 ldr r12, __func_addr
3873 bx r12
3874 __func_addr:
906e58ca 3875 .word func @ behave as if you saw a ARM_32 reloc.
252b5132 3876
26079076
PB
3877 (v5t static images)
3878 .arm
3879 __func_from_arm:
3880 ldr pc, __func_addr
3881 __func_addr:
906e58ca 3882 .word func @ behave as if you saw a ARM_32 reloc.
26079076 3883
8f6277f5
PB
3884 (relocatable images)
3885 .arm
3886 __func_from_arm:
3887 ldr r12, __func_offset
3888 add r12, r12, pc
3889 bx r12
3890 __func_offset:
8029a119 3891 .word func - . */
8f6277f5
PB
3892
3893#define ARM2THUMB_STATIC_GLUE_SIZE 12
252b5132
RH
3894static const insn32 a2t1_ldr_insn = 0xe59fc000;
3895static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
3896static const insn32 a2t3_func_addr_insn = 0x00000001;
3897
26079076
PB
3898#define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
3899static const insn32 a2t1v5_ldr_insn = 0xe51ff004;
3900static const insn32 a2t2v5_func_addr_insn = 0x00000001;
3901
8f6277f5
PB
3902#define ARM2THUMB_PIC_GLUE_SIZE 16
3903static const insn32 a2t1p_ldr_insn = 0xe59fc004;
3904static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
3905static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
3906
9b485d32 3907/* Thumb->ARM: Thumb->(non-interworking aware) ARM
252b5132 3908
8029a119
NC
3909 .thumb .thumb
3910 .align 2 .align 2
3911 __func_from_thumb: __func_from_thumb:
3912 bx pc push {r6, lr}
3913 nop ldr r6, __func_addr
3914 .arm mov lr, pc
3915 b func bx r6
fcef9eb7
NC
3916 .arm
3917 ;; back_to_thumb
3918 ldmia r13! {r6, lr}
3919 bx lr
8029a119
NC
3920 __func_addr:
3921 .word func */
252b5132
RH
3922
3923#define THUMB2ARM_GLUE_SIZE 8
3924static const insn16 t2a1_bx_pc_insn = 0x4778;
3925static const insn16 t2a2_noop_insn = 0x46c0;
3926static const insn32 t2a3_b_insn = 0xea000000;
3927
c7b8f16e
JB
3928#define VFP11_ERRATUM_VENEER_SIZE 8
3929
845b51d6
PB
3930#define ARM_BX_VENEER_SIZE 12
3931static const insn32 armbx1_tst_insn = 0xe3100001;
3932static const insn32 armbx2_moveq_insn = 0x01a0f000;
3933static const insn32 armbx3_bx_insn = 0xe12fff10;
3934
7e392df6 3935#ifndef ELFARM_NABI_C_INCLUDED
8029a119
NC
3936static void
3937arm_allocate_glue_section_space (bfd * abfd, bfd_size_type size, const char * name)
252b5132
RH
3938{
3939 asection * s;
8029a119 3940 bfd_byte * contents;
252b5132 3941
8029a119
NC
3942 if (size == 0)
3943 return;
252b5132 3944
8029a119 3945 BFD_ASSERT (abfd != NULL);
252b5132 3946
8029a119
NC
3947 s = bfd_get_section_by_name (abfd, name);
3948 BFD_ASSERT (s != NULL);
252b5132 3949
8029a119 3950 contents = bfd_alloc (abfd, size);
252b5132 3951
8029a119
NC
3952 BFD_ASSERT (s->size == size);
3953 s->contents = contents;
3954}
906e58ca 3955
8029a119
NC
3956bfd_boolean
3957bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
3958{
3959 struct elf32_arm_link_hash_table * globals;
906e58ca 3960
8029a119
NC
3961 globals = elf32_arm_hash_table (info);
3962 BFD_ASSERT (globals != NULL);
906e58ca 3963
8029a119
NC
3964 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
3965 globals->arm_glue_size,
3966 ARM2THUMB_GLUE_SECTION_NAME);
906e58ca 3967
8029a119
NC
3968 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
3969 globals->thumb_glue_size,
3970 THUMB2ARM_GLUE_SECTION_NAME);
252b5132 3971
8029a119
NC
3972 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
3973 globals->vfp11_erratum_glue_size,
3974 VFP11_ERRATUM_VENEER_SECTION_NAME);
845b51d6 3975
8029a119
NC
3976 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
3977 globals->bx_glue_size,
845b51d6
PB
3978 ARM_BX_GLUE_SECTION_NAME);
3979
b34976b6 3980 return TRUE;
252b5132
RH
3981}
3982
a4fd1a8e 3983/* Allocate space and symbols for calling a Thumb function from Arm mode.
906e58ca
NC
3984 returns the symbol identifying the stub. */
3985
a4fd1a8e 3986static struct elf_link_hash_entry *
57e8b36a
NC
3987record_arm_to_thumb_glue (struct bfd_link_info * link_info,
3988 struct elf_link_hash_entry * h)
252b5132
RH
3989{
3990 const char * name = h->root.root.string;
63b0f745 3991 asection * s;
252b5132
RH
3992 char * tmp_name;
3993 struct elf_link_hash_entry * myh;
14a793b2 3994 struct bfd_link_hash_entry * bh;
252b5132 3995 struct elf32_arm_link_hash_table * globals;
dc810e39 3996 bfd_vma val;
2f475487 3997 bfd_size_type size;
252b5132
RH
3998
3999 globals = elf32_arm_hash_table (link_info);
4000
4001 BFD_ASSERT (globals != NULL);
4002 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4003
4004 s = bfd_get_section_by_name
4005 (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
4006
252b5132
RH
4007 BFD_ASSERT (s != NULL);
4008
57e8b36a 4009 tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH
4010
4011 BFD_ASSERT (tmp_name);
4012
4013 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
4014
4015 myh = elf_link_hash_lookup
b34976b6 4016 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH
4017
4018 if (myh != NULL)
4019 {
9b485d32 4020 /* We've already seen this guy. */
252b5132 4021 free (tmp_name);
a4fd1a8e 4022 return myh;
252b5132
RH
4023 }
4024
57e8b36a
NC
4025 /* The only trick here is using hash_table->arm_glue_size as the value.
4026 Even though the section isn't allocated yet, this is where we will be
3dccd7b7
DJ
4027 putting it. The +1 on the value marks that the stub has not been
4028 output yet - not that it is a Thumb function. */
14a793b2 4029 bh = NULL;
dc810e39
AM
4030 val = globals->arm_glue_size + 1;
4031 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
4032 tmp_name, BSF_GLOBAL, s, val,
b34976b6 4033 NULL, TRUE, FALSE, &bh);
252b5132 4034
b7693d02
DJ
4035 myh = (struct elf_link_hash_entry *) bh;
4036 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4037 myh->forced_local = 1;
4038
252b5132
RH
4039 free (tmp_name);
4040
27e55c4d
PB
4041 if (link_info->shared || globals->root.is_relocatable_executable
4042 || globals->pic_veneer)
2f475487 4043 size = ARM2THUMB_PIC_GLUE_SIZE;
26079076
PB
4044 else if (globals->use_blx)
4045 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
8f6277f5 4046 else
2f475487
AM
4047 size = ARM2THUMB_STATIC_GLUE_SIZE;
4048
4049 s->size += size;
4050 globals->arm_glue_size += size;
252b5132 4051
a4fd1a8e 4052 return myh;
252b5132
RH
4053}
4054
4055static void
57e8b36a
NC
4056record_thumb_to_arm_glue (struct bfd_link_info *link_info,
4057 struct elf_link_hash_entry *h)
252b5132
RH
4058{
4059 const char *name = h->root.root.string;
63b0f745 4060 asection *s;
252b5132
RH
4061 char *tmp_name;
4062 struct elf_link_hash_entry *myh;
14a793b2 4063 struct bfd_link_hash_entry *bh;
252b5132 4064 struct elf32_arm_link_hash_table *hash_table;
dc810e39 4065 bfd_vma val;
252b5132
RH
4066
4067 hash_table = elf32_arm_hash_table (link_info);
4068
4069 BFD_ASSERT (hash_table != NULL);
4070 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
4071
4072 s = bfd_get_section_by_name
4073 (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
4074
4075 BFD_ASSERT (s != NULL);
4076
57e8b36a
NC
4077 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
4078 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
252b5132
RH
4079
4080 BFD_ASSERT (tmp_name);
4081
4082 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
4083
4084 myh = elf_link_hash_lookup
b34976b6 4085 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH
4086
4087 if (myh != NULL)
4088 {
9b485d32 4089 /* We've already seen this guy. */
252b5132 4090 free (tmp_name);
9b485d32 4091 return;
252b5132
RH
4092 }
4093
3dccd7b7
DJ
4094 /* The only trick here is using hash_table->thumb_glue_size as the value.
4095 Even though the section isn't allocated yet, this is where we will be
4096 putting it. The +1 on the value marks that the stub has not been
4097 output yet - not that it is a Thumb function. */
14a793b2 4098 bh = NULL;
dc810e39
AM
4099 val = hash_table->thumb_glue_size + 1;
4100 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4101 tmp_name, BSF_GLOBAL, s, val,
b34976b6 4102 NULL, TRUE, FALSE, &bh);
252b5132 4103
9b485d32 4104 /* If we mark it 'Thumb', the disassembler will do a better job. */
14a793b2 4105 myh = (struct elf_link_hash_entry *) bh;
b7693d02
DJ
4106 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
4107 myh->forced_local = 1;
252b5132
RH
4108
4109 free (tmp_name);
4110
252b5132
RH
4111#define CHANGE_TO_ARM "__%s_change_to_arm"
4112#define BACK_FROM_ARM "__%s_back_from_arm"
4113
9b485d32 4114 /* Allocate another symbol to mark where we switch to Arm mode. */
57e8b36a
NC
4115 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
4116 + strlen (CHANGE_TO_ARM) + 1);
252b5132
RH
4117
4118 BFD_ASSERT (tmp_name);
4119
4120 sprintf (tmp_name, CHANGE_TO_ARM, name);
4121
14a793b2 4122 bh = NULL;
dc810e39
AM
4123 val = hash_table->thumb_glue_size + 4,
4124 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4125 tmp_name, BSF_LOCAL, s, val,
b34976b6 4126 NULL, TRUE, FALSE, &bh);
252b5132
RH
4127
4128 free (tmp_name);
4129
2f475487 4130 s->size += THUMB2ARM_GLUE_SIZE;
252b5132 4131 hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
252b5132
RH
4132}
4133
c7b8f16e 4134
845b51d6
PB
4135/* Allocate space for ARMv4 BX veneers. */
4136
4137static void
4138record_arm_bx_glue (struct bfd_link_info * link_info, int reg)
4139{
4140 asection * s;
4141 struct elf32_arm_link_hash_table *globals;
4142 char *tmp_name;
4143 struct elf_link_hash_entry *myh;
4144 struct bfd_link_hash_entry *bh;
4145 bfd_vma val;
4146
4147 /* BX PC does not need a veneer. */
4148 if (reg == 15)
4149 return;
4150
4151 globals = elf32_arm_hash_table (link_info);
4152
4153 BFD_ASSERT (globals != NULL);
4154 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4155
4156 /* Check if this veneer has already been allocated. */
4157 if (globals->bx_glue_offset[reg])
4158 return;
4159
4160 s = bfd_get_section_by_name
4161 (globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME);
4162
4163 BFD_ASSERT (s != NULL);
4164
4165 /* Add symbol for veneer. */
4166 tmp_name = bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1);
906e58ca 4167
845b51d6 4168 BFD_ASSERT (tmp_name);
906e58ca 4169
845b51d6 4170 sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg);
906e58ca 4171
845b51d6
PB
4172 myh = elf_link_hash_lookup
4173 (&(globals)->root, tmp_name, FALSE, FALSE, FALSE);
906e58ca 4174
845b51d6 4175 BFD_ASSERT (myh == NULL);
906e58ca 4176
845b51d6
PB
4177 bh = NULL;
4178 val = globals->bx_glue_size;
4179 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
4180 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
4181 NULL, TRUE, FALSE, &bh);
4182
4183 myh = (struct elf_link_hash_entry *) bh;
4184 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4185 myh->forced_local = 1;
4186
4187 s->size += ARM_BX_VENEER_SIZE;
4188 globals->bx_glue_offset[reg] = globals->bx_glue_size | 2;
4189 globals->bx_glue_size += ARM_BX_VENEER_SIZE;
4190}
4191
4192
c7b8f16e
JB
4193/* Add an entry to the code/data map for section SEC. */
4194
4195static void
4196elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma)
4197{
4198 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
4199 unsigned int newidx;
906e58ca 4200
c7b8f16e
JB
4201 if (sec_data->map == NULL)
4202 {
4203 sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map));
4204 sec_data->mapcount = 0;
4205 sec_data->mapsize = 1;
4206 }
906e58ca 4207
c7b8f16e 4208 newidx = sec_data->mapcount++;
906e58ca 4209
c7b8f16e
JB
4210 if (sec_data->mapcount > sec_data->mapsize)
4211 {
4212 sec_data->mapsize *= 2;
515ef31d
NC
4213 sec_data->map = bfd_realloc_or_free (sec_data->map, sec_data->mapsize
4214 * sizeof (elf32_arm_section_map));
4215 }
4216
4217 if (sec_data->map)
4218 {
4219 sec_data->map[newidx].vma = vma;
4220 sec_data->map[newidx].type = type;
c7b8f16e 4221 }
c7b8f16e
JB
4222}
4223
4224
4225/* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
4226 veneers are handled for now. */
4227
4228static bfd_vma
4229record_vfp11_erratum_veneer (struct bfd_link_info *link_info,
4230 elf32_vfp11_erratum_list *branch,
4231 bfd *branch_bfd,
4232 asection *branch_sec,
4233 unsigned int offset)
4234{
4235 asection *s;
4236 struct elf32_arm_link_hash_table *hash_table;
4237 char *tmp_name;
4238 struct elf_link_hash_entry *myh;
4239 struct bfd_link_hash_entry *bh;
4240 bfd_vma val;
4241 struct _arm_elf_section_data *sec_data;
4242 int errcount;
4243 elf32_vfp11_erratum_list *newerr;
906e58ca 4244
c7b8f16e 4245 hash_table = elf32_arm_hash_table (link_info);
906e58ca 4246
c7b8f16e
JB
4247 BFD_ASSERT (hash_table != NULL);
4248 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
906e58ca 4249
c7b8f16e
JB
4250 s = bfd_get_section_by_name
4251 (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
906e58ca 4252
c7b8f16e 4253 sec_data = elf32_arm_section_data (s);
906e58ca 4254
c7b8f16e 4255 BFD_ASSERT (s != NULL);
906e58ca 4256
c7b8f16e
JB
4257 tmp_name = bfd_malloc ((bfd_size_type) strlen
4258 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
906e58ca 4259
c7b8f16e 4260 BFD_ASSERT (tmp_name);
906e58ca 4261
c7b8f16e
JB
4262 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
4263 hash_table->num_vfp11_fixes);
906e58ca 4264
c7b8f16e
JB
4265 myh = elf_link_hash_lookup
4266 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
906e58ca 4267
c7b8f16e 4268 BFD_ASSERT (myh == NULL);
906e58ca 4269
c7b8f16e
JB
4270 bh = NULL;
4271 val = hash_table->vfp11_erratum_glue_size;
4272 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4273 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
4274 NULL, TRUE, FALSE, &bh);
4275
4276 myh = (struct elf_link_hash_entry *) bh;
4277 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4278 myh->forced_local = 1;
4279
4280 /* Link veneer back to calling location. */
4281 errcount = ++(sec_data->erratumcount);
4282 newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
906e58ca 4283
c7b8f16e
JB
4284 newerr->type = VFP11_ERRATUM_ARM_VENEER;
4285 newerr->vma = -1;
4286 newerr->u.v.branch = branch;
4287 newerr->u.v.id = hash_table->num_vfp11_fixes;
4288 branch->u.b.veneer = newerr;
4289
4290 newerr->next = sec_data->erratumlist;
4291 sec_data->erratumlist = newerr;
4292
4293 /* A symbol for the return from the veneer. */
4294 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
4295 hash_table->num_vfp11_fixes);
4296
4297 myh = elf_link_hash_lookup
4298 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
906e58ca 4299
c7b8f16e
JB
4300 if (myh != NULL)
4301 abort ();
4302
4303 bh = NULL;
4304 val = offset + 4;
4305 _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL,
4306 branch_sec, val, NULL, TRUE, FALSE, &bh);
906e58ca 4307
c7b8f16e
JB
4308 myh = (struct elf_link_hash_entry *) bh;
4309 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4310 myh->forced_local = 1;
4311
4312 free (tmp_name);
906e58ca 4313
c7b8f16e
JB
4314 /* Generate a mapping symbol for the veneer section, and explicitly add an
4315 entry for that symbol to the code/data map for the section. */
4316 if (hash_table->vfp11_erratum_glue_size == 0)
4317 {
4318 bh = NULL;
4319 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
4320 ever requires this erratum fix. */
4321 _bfd_generic_link_add_one_symbol (link_info,
4322 hash_table->bfd_of_glue_owner, "$a",
4323 BSF_LOCAL, s, 0, NULL,
4324 TRUE, FALSE, &bh);
4325
4326 myh = (struct elf_link_hash_entry *) bh;
4327 myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
4328 myh->forced_local = 1;
906e58ca 4329
c7b8f16e
JB
4330 /* The elf32_arm_init_maps function only cares about symbols from input
4331 BFDs. We must make a note of this generated mapping symbol
4332 ourselves so that code byteswapping works properly in
4333 elf32_arm_write_section. */
4334 elf32_arm_section_map_add (s, 'a', 0);
4335 }
906e58ca 4336
c7b8f16e
JB
4337 s->size += VFP11_ERRATUM_VENEER_SIZE;
4338 hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE;
4339 hash_table->num_vfp11_fixes++;
906e58ca 4340
c7b8f16e
JB
4341 /* The offset of the veneer. */
4342 return val;
4343}
4344
8029a119
NC
4345/* Note: we do not include the flag SEC_LINKER_CREATED, as that
4346 would prevent elf_link_input_bfd() from processing the contents
4347 of the section. */
4348#define ARM_GLUE_SECTION_FLAGS \
4349 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY)
4350
4351/* Create a fake section for use by the ARM backend of the linker. */
4352
4353static bfd_boolean
4354arm_make_glue_section (bfd * abfd, const char * name)
4355{
4356 asection * sec;
4357
4358 sec = bfd_get_section_by_name (abfd, name);
4359 if (sec != NULL)
4360 /* Already made. */
4361 return TRUE;
4362
4363 sec = bfd_make_section_with_flags (abfd, name, ARM_GLUE_SECTION_FLAGS);
4364
4365 if (sec == NULL
4366 || !bfd_set_section_alignment (abfd, sec, 2))
4367 return FALSE;
4368
4369 /* Set the gc mark to prevent the section from being removed by garbage
4370 collection, despite the fact that no relocs refer to this section. */
4371 sec->gc_mark = 1;
4372
4373 return TRUE;
4374}
4375
8afb0e02
NC
4376/* Add the glue sections to ABFD. This function is called from the
4377 linker scripts in ld/emultempl/{armelf}.em. */
9b485d32 4378
b34976b6 4379bfd_boolean
57e8b36a
NC
4380bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
4381 struct bfd_link_info *info)
252b5132 4382{
8afb0e02
NC
4383 /* If we are only performing a partial
4384 link do not bother adding the glue. */
1049f94e 4385 if (info->relocatable)
b34976b6 4386 return TRUE;
252b5132 4387
8029a119 4388 /* Linker stubs don't need glue. */
906e58ca
NC
4389 if (!strcmp (abfd->filename, "linker stubs"))
4390 return TRUE;
4391
8029a119
NC
4392 return arm_make_glue_section (abfd, ARM2THUMB_GLUE_SECTION_NAME)
4393 && arm_make_glue_section (abfd, THUMB2ARM_GLUE_SECTION_NAME)
4394 && arm_make_glue_section (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME)
4395 && arm_make_glue_section (abfd, ARM_BX_GLUE_SECTION_NAME);
8afb0e02
NC
4396}
4397
4398/* Select a BFD to be used to hold the sections used by the glue code.
4399 This function is called from the linker scripts in ld/emultempl/
8029a119 4400 {armelf/pe}.em. */
8afb0e02 4401
b34976b6 4402bfd_boolean
57e8b36a 4403bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
8afb0e02
NC
4404{
4405 struct elf32_arm_link_hash_table *globals;
4406
4407 /* If we are only performing a partial link
4408 do not bother getting a bfd to hold the glue. */
1049f94e 4409 if (info->relocatable)
b34976b6 4410 return TRUE;
8afb0e02 4411
b7693d02
DJ
4412 /* Make sure we don't attach the glue sections to a dynamic object. */
4413 BFD_ASSERT (!(abfd->flags & DYNAMIC));
4414
8afb0e02
NC
4415 globals = elf32_arm_hash_table (info);
4416
4417 BFD_ASSERT (globals != NULL);
4418
4419 if (globals->bfd_of_glue_owner != NULL)
b34976b6 4420 return TRUE;
8afb0e02 4421
252b5132
RH
4422 /* Save the bfd for later use. */
4423 globals->bfd_of_glue_owner = abfd;
cedb70c5 4424
b34976b6 4425 return TRUE;
252b5132
RH
4426}
4427
906e58ca
NC
4428static void
4429check_use_blx (struct elf32_arm_link_hash_table *globals)
39b41c9c 4430{
104d59d1
JM
4431 if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
4432 Tag_CPU_arch) > 2)
39b41c9c
PB
4433 globals->use_blx = 1;
4434}
4435
b34976b6 4436bfd_boolean
57e8b36a 4437bfd_elf32_arm_process_before_allocation (bfd *abfd,
d504ffc8 4438 struct bfd_link_info *link_info)
252b5132
RH
4439{
4440 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 4441 Elf_Internal_Rela *internal_relocs = NULL;
252b5132
RH
4442 Elf_Internal_Rela *irel, *irelend;
4443 bfd_byte *contents = NULL;
252b5132
RH
4444
4445 asection *sec;
4446 struct elf32_arm_link_hash_table *globals;
4447
4448 /* If we are only performing a partial link do not bother
4449 to construct any glue. */
1049f94e 4450 if (link_info->relocatable)
b34976b6 4451 return TRUE;
252b5132 4452
39ce1a6a
NC
4453 /* Here we have a bfd that is to be included on the link. We have a
4454 hook to do reloc rummaging, before section sizes are nailed down. */
252b5132
RH
4455 globals = elf32_arm_hash_table (link_info);
4456
4457 BFD_ASSERT (globals != NULL);
39ce1a6a
NC
4458
4459 check_use_blx (globals);
252b5132 4460
d504ffc8 4461 if (globals->byteswap_code && !bfd_big_endian (abfd))
e489d0ae 4462 {
d003868e
AM
4463 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
4464 abfd);
e489d0ae
PB
4465 return FALSE;
4466 }
f21f3fe0 4467
39ce1a6a
NC
4468 /* PR 5398: If we have not decided to include any loadable sections in
4469 the output then we will not have a glue owner bfd. This is OK, it
4470 just means that there is nothing else for us to do here. */
4471 if (globals->bfd_of_glue_owner == NULL)
4472 return TRUE;
4473
252b5132
RH
4474 /* Rummage around all the relocs and map the glue vectors. */
4475 sec = abfd->sections;
4476
4477 if (sec == NULL)
b34976b6 4478 return TRUE;
252b5132
RH
4479
4480 for (; sec != NULL; sec = sec->next)
4481 {
4482 if (sec->reloc_count == 0)
4483 continue;
4484
2f475487
AM
4485 if ((sec->flags & SEC_EXCLUDE) != 0)
4486 continue;
4487
0ffa91dd 4488 symtab_hdr = & elf_symtab_hdr (abfd);
252b5132 4489
9b485d32 4490 /* Load the relocs. */
6cdc0ccc 4491 internal_relocs
906e58ca 4492 = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, FALSE);
252b5132 4493
6cdc0ccc
AM
4494 if (internal_relocs == NULL)
4495 goto error_return;
252b5132 4496
6cdc0ccc
AM
4497 irelend = internal_relocs + sec->reloc_count;
4498 for (irel = internal_relocs; irel < irelend; irel++)
252b5132
RH
4499 {
4500 long r_type;
4501 unsigned long r_index;
252b5132
RH
4502
4503 struct elf_link_hash_entry *h;
4504
4505 r_type = ELF32_R_TYPE (irel->r_info);
4506 r_index = ELF32_R_SYM (irel->r_info);
4507
9b485d32 4508 /* These are the only relocation types we care about. */
ba96a88f 4509 if ( r_type != R_ARM_PC24
b7693d02 4510 && r_type != R_ARM_PLT32
5b5bb741 4511 && r_type != R_ARM_JUMP24
845b51d6
PB
4512 && r_type != R_ARM_THM_JUMP24
4513 && (r_type != R_ARM_V4BX || globals->fix_v4bx < 2))
252b5132
RH
4514 continue;
4515
4516 /* Get the section contents if we haven't done so already. */
4517 if (contents == NULL)
4518 {
4519 /* Get cached copy if it exists. */
4520 if (elf_section_data (sec)->this_hdr.contents != NULL)
4521 contents = elf_section_data (sec)->this_hdr.contents;
4522 else
4523 {
4524 /* Go get them off disk. */
57e8b36a 4525 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
252b5132
RH
4526 goto error_return;
4527 }
4528 }
4529
845b51d6
PB
4530 if (r_type == R_ARM_V4BX)
4531 {
4532 int reg;
4533
4534 reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf;
4535 record_arm_bx_glue (link_info, reg);
4536 continue;
4537 }
4538
a7c10850 4539 /* If the relocation is not against a symbol it cannot concern us. */
252b5132
RH
4540 h = NULL;
4541
9b485d32 4542 /* We don't care about local symbols. */
252b5132
RH
4543 if (r_index < symtab_hdr->sh_info)
4544 continue;
4545
9b485d32 4546 /* This is an external symbol. */
252b5132
RH
4547 r_index -= symtab_hdr->sh_info;
4548 h = (struct elf_link_hash_entry *)
4549 elf_sym_hashes (abfd)[r_index];
4550
4551 /* If the relocation is against a static symbol it must be within
4552 the current section and so cannot be a cross ARM/Thumb relocation. */
4553 if (h == NULL)
4554 continue;
4555
d504ffc8
DJ
4556 /* If the call will go through a PLT entry then we do not need
4557 glue. */
4558 if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1)
b7693d02
DJ
4559 continue;
4560
252b5132
RH
4561 switch (r_type)
4562 {
4563 case R_ARM_PC24:
c6596c5e 4564 case R_ARM_PLT32:
5b5bb741 4565 case R_ARM_JUMP24:
252b5132 4566 /* This one is a call from arm code. We need to look up
2f0ca46a 4567 the target of the call. If it is a thumb target, we
252b5132 4568 insert glue. */
906e58ca 4569 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
39b41c9c 4570 && !(r_type == R_ARM_CALL && globals->use_blx))
252b5132
RH
4571 record_arm_to_thumb_glue (link_info, h);
4572 break;
4573
bd97cb95 4574 case R_ARM_THM_JUMP24:
f21f3fe0 4575 /* This one is a call from thumb code. We look
2f0ca46a 4576 up the target of the call. If it is not a thumb
bcbdc74c 4577 target, we insert glue. */
bd97cb95
DJ
4578 if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC
4579 && !(globals->use_blx && r_type == R_ARM_THM_CALL)
5ab79981 4580 && h->root.type != bfd_link_hash_undefweak)
252b5132
RH
4581 record_thumb_to_arm_glue (link_info, h);
4582 break;
4583
4584 default:
c6596c5e 4585 abort ();
252b5132
RH
4586 }
4587 }
6cdc0ccc
AM
4588
4589 if (contents != NULL
4590 && elf_section_data (sec)->this_hdr.contents != contents)
4591 free (contents);
4592 contents = NULL;
4593
4594 if (internal_relocs != NULL
4595 && elf_section_data (sec)->relocs != internal_relocs)
4596 free (internal_relocs);
4597 internal_relocs = NULL;
252b5132
RH
4598 }
4599
b34976b6 4600 return TRUE;
9a5aca8c 4601
252b5132 4602error_return:
6cdc0ccc
AM
4603 if (contents != NULL
4604 && elf_section_data (sec)->this_hdr.contents != contents)
4605 free (contents);
4606 if (internal_relocs != NULL
4607 && elf_section_data (sec)->relocs != internal_relocs)
4608 free (internal_relocs);
9a5aca8c 4609
b34976b6 4610 return FALSE;
252b5132 4611}
7e392df6 4612#endif
252b5132 4613
eb043451 4614
c7b8f16e
JB
4615/* Initialise maps of ARM/Thumb/data for input BFDs. */
4616
4617void
4618bfd_elf32_arm_init_maps (bfd *abfd)
4619{
4620 Elf_Internal_Sym *isymbuf;
4621 Elf_Internal_Shdr *hdr;
4622 unsigned int i, localsyms;
4623
4624 if ((abfd->flags & DYNAMIC) != 0)
4625 return;
4626
0ffa91dd 4627 hdr = & elf_symtab_hdr (abfd);
c7b8f16e
JB
4628 localsyms = hdr->sh_info;
4629
4630 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4631 should contain the number of local symbols, which should come before any
4632 global symbols. Mapping symbols are always local. */
4633 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL,
4634 NULL);
4635
4636 /* No internal symbols read? Skip this BFD. */
4637 if (isymbuf == NULL)
4638 return;
4639
4640 for (i = 0; i < localsyms; i++)
4641 {
4642 Elf_Internal_Sym *isym = &isymbuf[i];
4643 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4644 const char *name;
906e58ca 4645
c7b8f16e
JB
4646 if (sec != NULL
4647 && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
4648 {
4649 name = bfd_elf_string_from_elf_section (abfd,
4650 hdr->sh_link, isym->st_name);
906e58ca 4651
c7b8f16e
JB
4652 if (bfd_is_arm_special_symbol_name (name,
4653 BFD_ARM_SPECIAL_SYM_TYPE_MAP))
4654 elf32_arm_section_map_add (sec, name[1], isym->st_value);
4655 }
4656 }
4657}
4658
4659
4660void
4661bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info)
4662{
4663 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
104d59d1 4664 obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd);
906e58ca 4665
c7b8f16e
JB
4666 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
4667 if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7)
4668 {
4669 switch (globals->vfp11_fix)
4670 {
4671 case BFD_ARM_VFP11_FIX_DEFAULT:
4672 case BFD_ARM_VFP11_FIX_NONE:
4673 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
4674 break;
906e58ca 4675
c7b8f16e
JB
4676 default:
4677 /* Give a warning, but do as the user requests anyway. */
4678 (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum "
4679 "workaround is not necessary for target architecture"), obfd);
4680 }
4681 }
4682 else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT)
4683 /* For earlier architectures, we might need the workaround, but do not
4684 enable it by default. If users is running with broken hardware, they
4685 must enable the erratum fix explicitly. */
4686 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
4687}
4688
4689
906e58ca
NC
4690enum bfd_arm_vfp11_pipe
4691{
c7b8f16e
JB
4692 VFP11_FMAC,
4693 VFP11_LS,
4694 VFP11_DS,
4695 VFP11_BAD
4696};
4697
4698/* Return a VFP register number. This is encoded as RX:X for single-precision
4699 registers, or X:RX for double-precision registers, where RX is the group of
4700 four bits in the instruction encoding and X is the single extension bit.
4701 RX and X fields are specified using their lowest (starting) bit. The return
4702 value is:
4703
4704 0...31: single-precision registers s0...s31
4705 32...63: double-precision registers d0...d31.
906e58ca 4706
c7b8f16e
JB
4707 Although X should be zero for VFP11 (encoding d0...d15 only), we might
4708 encounter VFP3 instructions, so we allow the full range for DP registers. */
906e58ca 4709
c7b8f16e
JB
4710static unsigned int
4711bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx,
4712 unsigned int x)
4713{
4714 if (is_double)
4715 return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32;
4716 else
4717 return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1);
4718}
4719
4720/* Set bits in *WMASK according to a register number REG as encoded by
4721 bfd_arm_vfp11_regno(). Ignore d16-d31. */
4722
4723static void
4724bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg)
4725{
4726 if (reg < 32)
4727 *wmask |= 1 << reg;
4728 else if (reg < 48)
4729 *wmask |= 3 << ((reg - 32) * 2);
4730}
4731
4732/* Return TRUE if WMASK overwrites anything in REGS. */
4733
4734static bfd_boolean
4735bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs)
4736{
4737 int i;
906e58ca 4738
c7b8f16e
JB
4739 for (i = 0; i < numregs; i++)
4740 {
4741 unsigned int reg = regs[i];
4742
4743 if (reg < 32 && (wmask & (1 << reg)) != 0)
4744 return TRUE;
906e58ca 4745
c7b8f16e
JB
4746 reg -= 32;
4747
4748 if (reg >= 16)
4749 continue;
906e58ca 4750
c7b8f16e
JB
4751 if ((wmask & (3 << (reg * 2))) != 0)
4752 return TRUE;
4753 }
906e58ca 4754
c7b8f16e
JB
4755 return FALSE;
4756}
4757
4758/* In this function, we're interested in two things: finding input registers
4759 for VFP data-processing instructions, and finding the set of registers which
4760 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
4761 hold the written set, so FLDM etc. are easy to deal with (we're only
4762 interested in 32 SP registers or 16 dp registers, due to the VFP version
4763 implemented by the chip in question). DP registers are marked by setting
4764 both SP registers in the write mask). */
4765
4766static enum bfd_arm_vfp11_pipe
4767bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs,
4768 int *numregs)
4769{
4770 enum bfd_arm_vfp11_pipe pipe = VFP11_BAD;
4771 bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0;
4772
4773 if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
4774 {
4775 unsigned int pqrs;
4776 unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
4777 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
4778
4779 pqrs = ((insn & 0x00800000) >> 20)
4780 | ((insn & 0x00300000) >> 19)
4781 | ((insn & 0x00000040) >> 6);
4782
4783 switch (pqrs)
4784 {
4785 case 0: /* fmac[sd]. */
4786 case 1: /* fnmac[sd]. */
4787 case 2: /* fmsc[sd]. */
4788 case 3: /* fnmsc[sd]. */
4789 pipe = VFP11_FMAC;
4790 bfd_arm_vfp11_write_mask (destmask, fd);
4791 regs[0] = fd;
4792 regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
4793 regs[2] = fm;
4794 *numregs = 3;
4795 break;
4796
4797 case 4: /* fmul[sd]. */
4798 case 5: /* fnmul[sd]. */
4799 case 6: /* fadd[sd]. */
4800 case 7: /* fsub[sd]. */
4801 pipe = VFP11_FMAC;
4802 goto vfp_binop;
4803
4804 case 8: /* fdiv[sd]. */
4805 pipe = VFP11_DS;
4806 vfp_binop:
4807 bfd_arm_vfp11_write_mask (destmask, fd);
4808 regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
4809 regs[1] = fm;
4810 *numregs = 2;
4811 break;
4812
4813 case 15: /* extended opcode. */
4814 {
4815 unsigned int extn = ((insn >> 15) & 0x1e)
4816 | ((insn >> 7) & 1);
4817
4818 switch (extn)
4819 {
4820 case 0: /* fcpy[sd]. */
4821 case 1: /* fabs[sd]. */
4822 case 2: /* fneg[sd]. */
4823 case 8: /* fcmp[sd]. */
4824 case 9: /* fcmpe[sd]. */
4825 case 10: /* fcmpz[sd]. */
4826 case 11: /* fcmpez[sd]. */
4827 case 16: /* fuito[sd]. */
4828 case 17: /* fsito[sd]. */
4829 case 24: /* ftoui[sd]. */
4830 case 25: /* ftouiz[sd]. */
4831 case 26: /* ftosi[sd]. */
4832 case 27: /* ftosiz[sd]. */
4833 /* These instructions will not bounce due to underflow. */
4834 *numregs = 0;
4835 pipe = VFP11_FMAC;
4836 break;
4837
4838 case 3: /* fsqrt[sd]. */
4839 /* fsqrt cannot underflow, but it can (perhaps) overwrite
4840 registers to cause the erratum in previous instructions. */
4841 bfd_arm_vfp11_write_mask (destmask, fd);
4842 pipe = VFP11_DS;
4843 break;
4844
4845 case 15: /* fcvt{ds,sd}. */
4846 {
4847 int rnum = 0;
4848
4849 bfd_arm_vfp11_write_mask (destmask, fd);
4850
4851 /* Only FCVTSD can underflow. */
4852 if ((insn & 0x100) != 0)
4853 regs[rnum++] = fm;
4854
4855 *numregs = rnum;
4856
4857 pipe = VFP11_FMAC;
4858 }
4859 break;
4860
4861 default:
4862 return VFP11_BAD;
4863 }
4864 }
4865 break;
4866
4867 default:
4868 return VFP11_BAD;
4869 }
4870 }
4871 /* Two-register transfer. */
4872 else if ((insn & 0x0fe00ed0) == 0x0c400a10)
4873 {
4874 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
906e58ca 4875
c7b8f16e
JB
4876 if ((insn & 0x100000) == 0)
4877 {
4878 if (is_double)
4879 bfd_arm_vfp11_write_mask (destmask, fm);
4880 else
4881 {
4882 bfd_arm_vfp11_write_mask (destmask, fm);
4883 bfd_arm_vfp11_write_mask (destmask, fm + 1);
4884 }
4885 }
4886
4887 pipe = VFP11_LS;
4888 }
4889 else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */
4890 {
4891 int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
4892 unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1);
906e58ca 4893
c7b8f16e
JB
4894 switch (puw)
4895 {
4896 case 0: /* Two-reg transfer. We should catch these above. */
4897 abort ();
906e58ca 4898
c7b8f16e
JB
4899 case 2: /* fldm[sdx]. */
4900 case 3:
4901 case 5:
4902 {
4903 unsigned int i, offset = insn & 0xff;
4904
4905 if (is_double)
4906 offset >>= 1;
4907
4908 for (i = fd; i < fd + offset; i++)
4909 bfd_arm_vfp11_write_mask (destmask, i);
4910 }
4911 break;
906e58ca 4912
c7b8f16e
JB
4913 case 4: /* fld[sd]. */
4914 case 6:
4915 bfd_arm_vfp11_write_mask (destmask, fd);
4916 break;
906e58ca 4917
c7b8f16e
JB
4918 default:
4919 return VFP11_BAD;
4920 }
4921
4922 pipe = VFP11_LS;
4923 }
4924 /* Single-register transfer. Note L==0. */
4925 else if ((insn & 0x0f100e10) == 0x0e000a10)
4926 {
4927 unsigned int opcode = (insn >> 21) & 7;
4928 unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7);
4929
4930 switch (opcode)
4931 {
4932 case 0: /* fmsr/fmdlr. */
4933 case 1: /* fmdhr. */
4934 /* Mark fmdhr and fmdlr as writing to the whole of the DP
4935 destination register. I don't know if this is exactly right,
4936 but it is the conservative choice. */
4937 bfd_arm_vfp11_write_mask (destmask, fn);
4938 break;
4939
4940 case 7: /* fmxr. */
4941 break;
4942 }
4943
4944 pipe = VFP11_LS;
4945 }
4946
4947 return pipe;
4948}
4949
4950
4951static int elf32_arm_compare_mapping (const void * a, const void * b);
4952
4953
4954/* Look for potentially-troublesome code sequences which might trigger the
4955 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
4956 (available from ARM) for details of the erratum. A short version is
4957 described in ld.texinfo. */
4958
4959bfd_boolean
4960bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info)
4961{
4962 asection *sec;
4963 bfd_byte *contents = NULL;
4964 int state = 0;
4965 int regs[3], numregs = 0;
4966 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
4967 int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR);
906e58ca 4968
c7b8f16e
JB
4969 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
4970 The states transition as follows:
906e58ca 4971
c7b8f16e
JB
4972 0 -> 1 (vector) or 0 -> 2 (scalar)
4973 A VFP FMAC-pipeline instruction has been seen. Fill
4974 regs[0]..regs[numregs-1] with its input operands. Remember this
4975 instruction in 'first_fmac'.
4976
4977 1 -> 2
4978 Any instruction, except for a VFP instruction which overwrites
4979 regs[*].
906e58ca 4980
c7b8f16e
JB
4981 1 -> 3 [ -> 0 ] or
4982 2 -> 3 [ -> 0 ]
4983 A VFP instruction has been seen which overwrites any of regs[*].
4984 We must make a veneer! Reset state to 0 before examining next
4985 instruction.
906e58ca 4986
c7b8f16e
JB
4987 2 -> 0
4988 If we fail to match anything in state 2, reset to state 0 and reset
4989 the instruction pointer to the instruction after 'first_fmac'.
4990
4991 If the VFP11 vector mode is in use, there must be at least two unrelated
4992 instructions between anti-dependent VFP11 instructions to properly avoid
906e58ca 4993 triggering the erratum, hence the use of the extra state 1. */
c7b8f16e
JB
4994
4995 /* If we are only performing a partial link do not bother
4996 to construct any glue. */
4997 if (link_info->relocatable)
4998 return TRUE;
4999
0ffa91dd
NC
5000 /* Skip if this bfd does not correspond to an ELF image. */
5001 if (! is_arm_elf (abfd))
5002 return TRUE;
906e58ca 5003
c7b8f16e
JB
5004 /* We should have chosen a fix type by the time we get here. */
5005 BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT);
5006
5007 if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE)
5008 return TRUE;
2e6030b9 5009
c7b8f16e
JB
5010 for (sec = abfd->sections; sec != NULL; sec = sec->next)
5011 {
5012 unsigned int i, span, first_fmac = 0, veneer_of_insn = 0;
5013 struct _arm_elf_section_data *sec_data;
5014
5015 /* If we don't have executable progbits, we're not interested in this
5016 section. Also skip if section is to be excluded. */
5017 if (elf_section_type (sec) != SHT_PROGBITS
5018 || (elf_section_flags (sec) & SHF_EXECINSTR) == 0
5019 || (sec->flags & SEC_EXCLUDE) != 0
5020 || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0)
5021 continue;
5022
5023 sec_data = elf32_arm_section_data (sec);
906e58ca 5024
c7b8f16e
JB
5025 if (sec_data->mapcount == 0)
5026 continue;
906e58ca 5027
c7b8f16e
JB
5028 if (elf_section_data (sec)->this_hdr.contents != NULL)
5029 contents = elf_section_data (sec)->this_hdr.contents;
5030 else if (! bfd_malloc_and_get_section (abfd, sec, &contents))
5031 goto error_return;
5032
5033 qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map),
5034 elf32_arm_compare_mapping);
5035
5036 for (span = 0; span < sec_data->mapcount; span++)
5037 {
5038 unsigned int span_start = sec_data->map[span].vma;
5039 unsigned int span_end = (span == sec_data->mapcount - 1)
5040 ? sec->size : sec_data->map[span + 1].vma;
5041 char span_type = sec_data->map[span].type;
906e58ca 5042
c7b8f16e
JB
5043 /* FIXME: Only ARM mode is supported at present. We may need to
5044 support Thumb-2 mode also at some point. */
5045 if (span_type != 'a')
5046 continue;
5047
5048 for (i = span_start; i < span_end;)
5049 {
5050 unsigned int next_i = i + 4;
5051 unsigned int insn = bfd_big_endian (abfd)
5052 ? (contents[i] << 24)
5053 | (contents[i + 1] << 16)
5054 | (contents[i + 2] << 8)
5055 | contents[i + 3]
5056 : (contents[i + 3] << 24)
5057 | (contents[i + 2] << 16)
5058 | (contents[i + 1] << 8)
5059 | contents[i];
5060 unsigned int writemask = 0;
5061 enum bfd_arm_vfp11_pipe pipe;
5062
5063 switch (state)
5064 {
5065 case 0:
5066 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs,
5067 &numregs);
5068 /* I'm assuming the VFP11 erratum can trigger with denorm
5069 operands on either the FMAC or the DS pipeline. This might
5070 lead to slightly overenthusiastic veneer insertion. */
5071 if (pipe == VFP11_FMAC || pipe == VFP11_DS)
5072 {
5073 state = use_vector ? 1 : 2;
5074 first_fmac = i;
5075 veneer_of_insn = insn;
5076 }
5077 break;
5078
5079 case 1:
5080 {
5081 int other_regs[3], other_numregs;
5082 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
5083 other_regs,
5084 &other_numregs);
5085 if (pipe != VFP11_BAD
5086 && bfd_arm_vfp11_antidependency (writemask, regs,
5087 numregs))
5088 state = 3;
5089 else
5090 state = 2;
5091 }
5092 break;
5093
5094 case 2:
5095 {
5096 int other_regs[3], other_numregs;
5097 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
5098 other_regs,
5099 &other_numregs);
5100 if (pipe != VFP11_BAD
5101 && bfd_arm_vfp11_antidependency (writemask, regs,
5102 numregs))
5103 state = 3;
5104 else
5105 {
5106 state = 0;
5107 next_i = first_fmac + 4;
5108 }
5109 }
5110 break;
5111
5112 case 3:
5113 abort (); /* Should be unreachable. */
5114 }
5115
5116 if (state == 3)
5117 {
5118 elf32_vfp11_erratum_list *newerr
5119 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
5120 int errcount;
5121
5122 errcount = ++(elf32_arm_section_data (sec)->erratumcount);
5123
5124 newerr->u.b.vfp_insn = veneer_of_insn;
5125
5126 switch (span_type)
5127 {
5128 case 'a':
5129 newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER;
5130 break;
906e58ca 5131
c7b8f16e
JB
5132 default:
5133 abort ();
5134 }
5135
5136 record_vfp11_erratum_veneer (link_info, newerr, abfd, sec,
5137 first_fmac);
5138
5139 newerr->vma = -1;
5140
5141 newerr->next = sec_data->erratumlist;
5142 sec_data->erratumlist = newerr;
5143
5144 state = 0;
5145 }
5146
5147 i = next_i;
5148 }
5149 }
906e58ca 5150
c7b8f16e
JB
5151 if (contents != NULL
5152 && elf_section_data (sec)->this_hdr.contents != contents)
5153 free (contents);
5154 contents = NULL;
5155 }
5156
5157 return TRUE;
5158
5159error_return:
5160 if (contents != NULL
5161 && elf_section_data (sec)->this_hdr.contents != contents)
5162 free (contents);
906e58ca 5163
c7b8f16e
JB
5164 return FALSE;
5165}
5166
5167/* Find virtual-memory addresses for VFP11 erratum veneers and return locations
5168 after sections have been laid out, using specially-named symbols. */
5169
5170void
5171bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd,
5172 struct bfd_link_info *link_info)
5173{
5174 asection *sec;
5175 struct elf32_arm_link_hash_table *globals;
5176 char *tmp_name;
906e58ca 5177
c7b8f16e
JB
5178 if (link_info->relocatable)
5179 return;
2e6030b9
MS
5180
5181 /* Skip if this bfd does not correspond to an ELF image. */
0ffa91dd 5182 if (! is_arm_elf (abfd))
2e6030b9
MS
5183 return;
5184
c7b8f16e 5185 globals = elf32_arm_hash_table (link_info);
906e58ca 5186
c7b8f16e
JB
5187 tmp_name = bfd_malloc ((bfd_size_type) strlen
5188 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
5189
5190 for (sec = abfd->sections; sec != NULL; sec = sec->next)
5191 {
5192 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
5193 elf32_vfp11_erratum_list *errnode = sec_data->erratumlist;
906e58ca 5194
c7b8f16e
JB
5195 for (; errnode != NULL; errnode = errnode->next)
5196 {
5197 struct elf_link_hash_entry *myh;
5198 bfd_vma vma;
5199
5200 switch (errnode->type)
5201 {
5202 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
5203 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER:
5204 /* Find veneer symbol. */
5205 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
5206 errnode->u.b.veneer->u.v.id);
5207
5208 myh = elf_link_hash_lookup
5209 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
5210
5211 if (myh == NULL)
5212 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
5213 "`%s'"), abfd, tmp_name);
5214
5215 vma = myh->root.u.def.section->output_section->vma
5216 + myh->root.u.def.section->output_offset
5217 + myh->root.u.def.value;
5218
5219 errnode->u.b.veneer->vma = vma;
5220 break;
5221
5222 case VFP11_ERRATUM_ARM_VENEER:
5223 case VFP11_ERRATUM_THUMB_VENEER:
5224 /* Find return location. */
5225 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
5226 errnode->u.v.id);
5227
5228 myh = elf_link_hash_lookup
5229 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
5230
5231 if (myh == NULL)
5232 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
5233 "`%s'"), abfd, tmp_name);
5234
5235 vma = myh->root.u.def.section->output_section->vma
5236 + myh->root.u.def.section->output_offset
5237 + myh->root.u.def.value;
5238
5239 errnode->u.v.branch->vma = vma;
5240 break;
906e58ca 5241
c7b8f16e
JB
5242 default:
5243 abort ();
5244 }
5245 }
5246 }
906e58ca 5247
c7b8f16e
JB
5248 free (tmp_name);
5249}
5250
5251
eb043451
PB
5252/* Set target relocation values needed during linking. */
5253
5254void
bf21ed78
MS
5255bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd,
5256 struct bfd_link_info *link_info,
eb043451 5257 int target1_is_rel,
319850b4 5258 char * target2_type,
33bfe774 5259 int fix_v4bx,
c7b8f16e 5260 int use_blx,
bf21ed78 5261 bfd_arm_vfp11_fix vfp11_fix,
a9dc9481
JM
5262 int no_enum_warn, int no_wchar_warn,
5263 int pic_veneer)
eb043451
PB
5264{
5265 struct elf32_arm_link_hash_table *globals;
5266
5267 globals = elf32_arm_hash_table (link_info);
5268
5269 globals->target1_is_rel = target1_is_rel;
5270 if (strcmp (target2_type, "rel") == 0)
5271 globals->target2_reloc = R_ARM_REL32;
eeac373a
PB
5272 else if (strcmp (target2_type, "abs") == 0)
5273 globals->target2_reloc = R_ARM_ABS32;
eb043451
PB
5274 else if (strcmp (target2_type, "got-rel") == 0)
5275 globals->target2_reloc = R_ARM_GOT_PREL;
5276 else
5277 {
5278 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
5279 target2_type);
5280 }
319850b4 5281 globals->fix_v4bx = fix_v4bx;
33bfe774 5282 globals->use_blx |= use_blx;
c7b8f16e 5283 globals->vfp11_fix = vfp11_fix;
27e55c4d 5284 globals->pic_veneer = pic_veneer;
bf21ed78 5285
0ffa91dd
NC
5286 BFD_ASSERT (is_arm_elf (output_bfd));
5287 elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
a9dc9481 5288 elf_arm_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
eb043451 5289}
eb043451 5290
12a0a0fd 5291/* Replace the target offset of a Thumb bl or b.w instruction. */
252b5132 5292
12a0a0fd
PB
5293static void
5294insert_thumb_branch (bfd *abfd, long int offset, bfd_byte *insn)
5295{
5296 bfd_vma upper;
5297 bfd_vma lower;
5298 int reloc_sign;
5299
5300 BFD_ASSERT ((offset & 1) == 0);
5301
5302 upper = bfd_get_16 (abfd, insn);
5303 lower = bfd_get_16 (abfd, insn + 2);
5304 reloc_sign = (offset < 0) ? 1 : 0;
5305 upper = (upper & ~(bfd_vma) 0x7ff)
5306 | ((offset >> 12) & 0x3ff)
5307 | (reloc_sign << 10);
906e58ca 5308 lower = (lower & ~(bfd_vma) 0x2fff)
12a0a0fd
PB
5309 | (((!((offset >> 23) & 1)) ^ reloc_sign) << 13)
5310 | (((!((offset >> 22) & 1)) ^ reloc_sign) << 11)
5311 | ((offset >> 1) & 0x7ff);
5312 bfd_put_16 (abfd, upper, insn);
5313 bfd_put_16 (abfd, lower, insn + 2);
252b5132
RH
5314}
5315
9b485d32
NC
5316/* Thumb code calling an ARM function. */
5317
252b5132 5318static int
57e8b36a
NC
5319elf32_thumb_to_arm_stub (struct bfd_link_info * info,
5320 const char * name,
5321 bfd * input_bfd,
5322 bfd * output_bfd,
5323 asection * input_section,
5324 bfd_byte * hit_data,
5325 asection * sym_sec,
5326 bfd_vma offset,
5327 bfd_signed_vma addend,
f2a9dd69
DJ
5328 bfd_vma val,
5329 char **error_message)
252b5132 5330{
bcbdc74c 5331 asection * s = 0;
dc810e39 5332 bfd_vma my_offset;
252b5132 5333 long int ret_offset;
bcbdc74c
NC
5334 struct elf_link_hash_entry * myh;
5335 struct elf32_arm_link_hash_table * globals;
252b5132 5336
f2a9dd69 5337 myh = find_thumb_glue (info, name, error_message);
252b5132 5338 if (myh == NULL)
b34976b6 5339 return FALSE;
252b5132
RH
5340
5341 globals = elf32_arm_hash_table (info);
5342
5343 BFD_ASSERT (globals != NULL);
5344 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5345
5346 my_offset = myh->root.u.def.value;
5347
5348 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5349 THUMB2ARM_GLUE_SECTION_NAME);
5350
5351 BFD_ASSERT (s != NULL);
5352 BFD_ASSERT (s->contents != NULL);
5353 BFD_ASSERT (s->output_section != NULL);
5354
5355 if ((my_offset & 0x01) == 0x01)
5356 {
5357 if (sym_sec != NULL
5358 && sym_sec->owner != NULL
5359 && !INTERWORK_FLAG (sym_sec->owner))
5360 {
8f615d07 5361 (*_bfd_error_handler)
d003868e
AM
5362 (_("%B(%s): warning: interworking not enabled.\n"
5363 " first occurrence: %B: thumb call to arm"),
5364 sym_sec->owner, input_bfd, name);
252b5132 5365
b34976b6 5366 return FALSE;
252b5132
RH
5367 }
5368
5369 --my_offset;
5370 myh->root.u.def.value = my_offset;
5371
52ab56c2
PB
5372 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn,
5373 s->contents + my_offset);
252b5132 5374
52ab56c2
PB
5375 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn,
5376 s->contents + my_offset + 2);
252b5132
RH
5377
5378 ret_offset =
9b485d32
NC
5379 /* Address of destination of the stub. */
5380 ((bfd_signed_vma) val)
252b5132 5381 - ((bfd_signed_vma)
57e8b36a
NC
5382 /* Offset from the start of the current section
5383 to the start of the stubs. */
9b485d32
NC
5384 (s->output_offset
5385 /* Offset of the start of this stub from the start of the stubs. */
5386 + my_offset
5387 /* Address of the start of the current section. */
5388 + s->output_section->vma)
5389 /* The branch instruction is 4 bytes into the stub. */
5390 + 4
5391 /* ARM branches work from the pc of the instruction + 8. */
5392 + 8);
252b5132 5393
52ab56c2
PB
5394 put_arm_insn (globals, output_bfd,
5395 (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
5396 s->contents + my_offset + 4);
252b5132
RH
5397 }
5398
5399 BFD_ASSERT (my_offset <= globals->thumb_glue_size);
5400
427bfd90
NC
5401 /* Now go back and fix up the original BL insn to point to here. */
5402 ret_offset =
5403 /* Address of where the stub is located. */
5404 (s->output_section->vma + s->output_offset + my_offset)
5405 /* Address of where the BL is located. */
57e8b36a
NC
5406 - (input_section->output_section->vma + input_section->output_offset
5407 + offset)
427bfd90
NC
5408 /* Addend in the relocation. */
5409 - addend
5410 /* Biassing for PC-relative addressing. */
5411 - 8;
252b5132 5412
12a0a0fd 5413 insert_thumb_branch (input_bfd, ret_offset, hit_data - input_section->vma);
252b5132 5414
b34976b6 5415 return TRUE;
252b5132
RH
5416}
5417
a4fd1a8e 5418/* Populate an Arm to Thumb stub. Returns the stub symbol. */
9b485d32 5419
a4fd1a8e
PB
5420static struct elf_link_hash_entry *
5421elf32_arm_create_thumb_stub (struct bfd_link_info * info,
5422 const char * name,
5423 bfd * input_bfd,
5424 bfd * output_bfd,
5425 asection * sym_sec,
5426 bfd_vma val,
8029a119
NC
5427 asection * s,
5428 char ** error_message)
252b5132 5429{
dc810e39 5430 bfd_vma my_offset;
252b5132 5431 long int ret_offset;
bcbdc74c
NC
5432 struct elf_link_hash_entry * myh;
5433 struct elf32_arm_link_hash_table * globals;
252b5132 5434
f2a9dd69 5435 myh = find_arm_glue (info, name, error_message);
252b5132 5436 if (myh == NULL)
a4fd1a8e 5437 return NULL;
252b5132
RH
5438
5439 globals = elf32_arm_hash_table (info);
5440
5441 BFD_ASSERT (globals != NULL);
5442 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5443
5444 my_offset = myh->root.u.def.value;
252b5132
RH
5445
5446 if ((my_offset & 0x01) == 0x01)
5447 {
5448 if (sym_sec != NULL
5449 && sym_sec->owner != NULL
5450 && !INTERWORK_FLAG (sym_sec->owner))
5451 {
8f615d07 5452 (*_bfd_error_handler)
d003868e
AM
5453 (_("%B(%s): warning: interworking not enabled.\n"
5454 " first occurrence: %B: arm call to thumb"),
5455 sym_sec->owner, input_bfd, name);
252b5132 5456 }
9b485d32 5457
252b5132
RH
5458 --my_offset;
5459 myh->root.u.def.value = my_offset;
5460
27e55c4d
PB
5461 if (info->shared || globals->root.is_relocatable_executable
5462 || globals->pic_veneer)
8f6277f5
PB
5463 {
5464 /* For relocatable objects we can't use absolute addresses,
5465 so construct the address from a relative offset. */
5466 /* TODO: If the offset is small it's probably worth
5467 constructing the address with adds. */
52ab56c2
PB
5468 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn,
5469 s->contents + my_offset);
5470 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn,
5471 s->contents + my_offset + 4);
5472 put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
5473 s->contents + my_offset + 8);
8f6277f5
PB
5474 /* Adjust the offset by 4 for the position of the add,
5475 and 8 for the pipeline offset. */
5476 ret_offset = (val - (s->output_offset
5477 + s->output_section->vma
5478 + my_offset + 12))
5479 | 1;
5480 bfd_put_32 (output_bfd, ret_offset,
5481 s->contents + my_offset + 12);
5482 }
26079076
PB
5483 else if (globals->use_blx)
5484 {
5485 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn,
5486 s->contents + my_offset);
5487
5488 /* It's a thumb address. Add the low order bit. */
5489 bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn,
5490 s->contents + my_offset + 4);
5491 }
8f6277f5
PB
5492 else
5493 {
52ab56c2
PB
5494 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn,
5495 s->contents + my_offset);
252b5132 5496
52ab56c2
PB
5497 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn,
5498 s->contents + my_offset + 4);
252b5132 5499
8f6277f5
PB
5500 /* It's a thumb address. Add the low order bit. */
5501 bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
5502 s->contents + my_offset + 8);
8029a119
NC
5503
5504 my_offset += 12;
8f6277f5 5505 }
252b5132
RH
5506 }
5507
5508 BFD_ASSERT (my_offset <= globals->arm_glue_size);
5509
a4fd1a8e
PB
5510 return myh;
5511}
5512
5513/* Arm code calling a Thumb function. */
5514
5515static int
5516elf32_arm_to_thumb_stub (struct bfd_link_info * info,
5517 const char * name,
5518 bfd * input_bfd,
5519 bfd * output_bfd,
5520 asection * input_section,
5521 bfd_byte * hit_data,
5522 asection * sym_sec,
5523 bfd_vma offset,
5524 bfd_signed_vma addend,
f2a9dd69
DJ
5525 bfd_vma val,
5526 char **error_message)
a4fd1a8e
PB
5527{
5528 unsigned long int tmp;
5529 bfd_vma my_offset;
5530 asection * s;
5531 long int ret_offset;
5532 struct elf_link_hash_entry * myh;
5533 struct elf32_arm_link_hash_table * globals;
5534
5535 globals = elf32_arm_hash_table (info);
5536
5537 BFD_ASSERT (globals != NULL);
5538 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5539
5540 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5541 ARM2THUMB_GLUE_SECTION_NAME);
5542 BFD_ASSERT (s != NULL);
5543 BFD_ASSERT (s->contents != NULL);
5544 BFD_ASSERT (s->output_section != NULL);
5545
5546 myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd,
f2a9dd69 5547 sym_sec, val, s, error_message);
a4fd1a8e
PB
5548 if (!myh)
5549 return FALSE;
5550
5551 my_offset = myh->root.u.def.value;
252b5132
RH
5552 tmp = bfd_get_32 (input_bfd, hit_data);
5553 tmp = tmp & 0xFF000000;
5554
9b485d32 5555 /* Somehow these are both 4 too far, so subtract 8. */
dc810e39
AM
5556 ret_offset = (s->output_offset
5557 + my_offset
5558 + s->output_section->vma
5559 - (input_section->output_offset
5560 + input_section->output_section->vma
5561 + offset + addend)
5562 - 8);
9a5aca8c 5563
252b5132
RH
5564 tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
5565
dc810e39 5566 bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
252b5132 5567
b34976b6 5568 return TRUE;
252b5132
RH
5569}
5570
a4fd1a8e
PB
5571/* Populate Arm stub for an exported Thumb function. */
5572
5573static bfd_boolean
5574elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf)
5575{
5576 struct bfd_link_info * info = (struct bfd_link_info *) inf;
5577 asection * s;
5578 struct elf_link_hash_entry * myh;
5579 struct elf32_arm_link_hash_entry *eh;
5580 struct elf32_arm_link_hash_table * globals;
5581 asection *sec;
5582 bfd_vma val;
f2a9dd69 5583 char *error_message;
a4fd1a8e 5584
906e58ca 5585 eh = elf32_arm_hash_entry (h);
a4fd1a8e
PB
5586 /* Allocate stubs for exported Thumb functions on v4t. */
5587 if (eh->export_glue == NULL)
5588 return TRUE;
5589
5590 globals = elf32_arm_hash_table (info);
5591
5592 BFD_ASSERT (globals != NULL);
5593 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5594
5595 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5596 ARM2THUMB_GLUE_SECTION_NAME);
5597 BFD_ASSERT (s != NULL);
5598 BFD_ASSERT (s->contents != NULL);
5599 BFD_ASSERT (s->output_section != NULL);
5600
5601 sec = eh->export_glue->root.u.def.section;
0eaedd0e
PB
5602
5603 BFD_ASSERT (sec->output_section != NULL);
5604
a4fd1a8e
PB
5605 val = eh->export_glue->root.u.def.value + sec->output_offset
5606 + sec->output_section->vma;
8029a119 5607
a4fd1a8e
PB
5608 myh = elf32_arm_create_thumb_stub (info, h->root.root.string,
5609 h->root.u.def.section->owner,
f2a9dd69
DJ
5610 globals->obfd, sec, val, s,
5611 &error_message);
a4fd1a8e
PB
5612 BFD_ASSERT (myh);
5613 return TRUE;
5614}
5615
845b51d6
PB
5616/* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */
5617
5618static bfd_vma
5619elf32_arm_bx_glue (struct bfd_link_info * info, int reg)
5620{
5621 bfd_byte *p;
5622 bfd_vma glue_addr;
5623 asection *s;
5624 struct elf32_arm_link_hash_table *globals;
5625
5626 globals = elf32_arm_hash_table (info);
5627
5628 BFD_ASSERT (globals != NULL);
5629 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5630
5631 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5632 ARM_BX_GLUE_SECTION_NAME);
5633 BFD_ASSERT (s != NULL);
5634 BFD_ASSERT (s->contents != NULL);
5635 BFD_ASSERT (s->output_section != NULL);
5636
5637 BFD_ASSERT (globals->bx_glue_offset[reg] & 2);
5638
5639 glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3;
5640
5641 if ((globals->bx_glue_offset[reg] & 1) == 0)
5642 {
5643 p = s->contents + glue_addr;
5644 bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p);
5645 bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4);
5646 bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8);
5647 globals->bx_glue_offset[reg] |= 1;
5648 }
5649
5650 return glue_addr + s->output_section->vma + s->output_offset;
5651}
5652
a4fd1a8e
PB
5653/* Generate Arm stubs for exported Thumb symbols. */
5654static void
906e58ca 5655elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED,
a4fd1a8e
PB
5656 struct bfd_link_info *link_info)
5657{
5658 struct elf32_arm_link_hash_table * globals;
5659
8029a119
NC
5660 if (link_info == NULL)
5661 /* Ignore this if we are not called by the ELF backend linker. */
a4fd1a8e
PB
5662 return;
5663
5664 globals = elf32_arm_hash_table (link_info);
84c08195
PB
5665 /* If blx is available then exported Thumb symbols are OK and there is
5666 nothing to do. */
a4fd1a8e
PB
5667 if (globals->use_blx)
5668 return;
5669
5670 elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub,
5671 link_info);
5672}
5673
eb043451
PB
5674/* Some relocations map to different relocations depending on the
5675 target. Return the real relocation. */
8029a119 5676
eb043451
PB
5677static int
5678arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
5679 int r_type)
5680{
5681 switch (r_type)
5682 {
5683 case R_ARM_TARGET1:
5684 if (globals->target1_is_rel)
5685 return R_ARM_REL32;
5686 else
5687 return R_ARM_ABS32;
5688
5689 case R_ARM_TARGET2:
5690 return globals->target2_reloc;
5691
5692 default:
5693 return r_type;
5694 }
5695}
eb043451 5696
ba93b8ac
DJ
5697/* Return the base VMA address which should be subtracted from real addresses
5698 when resolving @dtpoff relocation.
5699 This is PT_TLS segment p_vaddr. */
5700
5701static bfd_vma
5702dtpoff_base (struct bfd_link_info *info)
5703{
5704 /* If tls_sec is NULL, we should have signalled an error already. */
5705 if (elf_hash_table (info)->tls_sec == NULL)
5706 return 0;
5707 return elf_hash_table (info)->tls_sec->vma;
5708}
5709
5710/* Return the relocation value for @tpoff relocation
5711 if STT_TLS virtual address is ADDRESS. */
5712
5713static bfd_vma
5714tpoff (struct bfd_link_info *info, bfd_vma address)
5715{
5716 struct elf_link_hash_table *htab = elf_hash_table (info);
5717 bfd_vma base;
5718
5719 /* If tls_sec is NULL, we should have signalled an error already. */
5720 if (htab->tls_sec == NULL)
5721 return 0;
5722 base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
5723 return address - htab->tls_sec->vma + base;
5724}
5725
00a97672
RS
5726/* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
5727 VALUE is the relocation value. */
5728
5729static bfd_reloc_status_type
5730elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value)
5731{
5732 if (value > 0xfff)
5733 return bfd_reloc_overflow;
5734
5735 value |= bfd_get_32 (abfd, data) & 0xfffff000;
5736 bfd_put_32 (abfd, value, data);
5737 return bfd_reloc_ok;
5738}
5739
4962c51a
MS
5740/* For a given value of n, calculate the value of G_n as required to
5741 deal with group relocations. We return it in the form of an
5742 encoded constant-and-rotation, together with the final residual. If n is
5743 specified as less than zero, then final_residual is filled with the
5744 input value and no further action is performed. */
5745
5746static bfd_vma
5747calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual)
5748{
5749 int current_n;
5750 bfd_vma g_n;
5751 bfd_vma encoded_g_n = 0;
5752 bfd_vma residual = value; /* Also known as Y_n. */
5753
5754 for (current_n = 0; current_n <= n; current_n++)
5755 {
5756 int shift;
5757
5758 /* Calculate which part of the value to mask. */
5759 if (residual == 0)
5760 shift = 0;
5761 else
5762 {
5763 int msb;
5764
5765 /* Determine the most significant bit in the residual and
5766 align the resulting value to a 2-bit boundary. */
5767 for (msb = 30; msb >= 0; msb -= 2)
5768 if (residual & (3 << msb))
5769 break;
5770
5771 /* The desired shift is now (msb - 6), or zero, whichever
5772 is the greater. */
5773 shift = msb - 6;
5774 if (shift < 0)
5775 shift = 0;
5776 }
5777
5778 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
5779 g_n = residual & (0xff << shift);
5780 encoded_g_n = (g_n >> shift)
5781 | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8);
5782
5783 /* Calculate the residual for the next time around. */
5784 residual &= ~g_n;
5785 }
5786
5787 *final_residual = residual;
5788
5789 return encoded_g_n;
5790}
5791
5792/* Given an ARM instruction, determine whether it is an ADD or a SUB.
5793 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
906e58ca 5794
4962c51a 5795static int
906e58ca 5796identify_add_or_sub (bfd_vma insn)
4962c51a
MS
5797{
5798 int opcode = insn & 0x1e00000;
5799
5800 if (opcode == 1 << 23) /* ADD */
5801 return 1;
5802
5803 if (opcode == 1 << 22) /* SUB */
5804 return -1;
5805
5806 return 0;
5807}
5808
252b5132 5809/* Perform a relocation as part of a final link. */
9b485d32 5810
252b5132 5811static bfd_reloc_status_type
57e8b36a
NC
5812elf32_arm_final_link_relocate (reloc_howto_type * howto,
5813 bfd * input_bfd,
5814 bfd * output_bfd,
5815 asection * input_section,
5816 bfd_byte * contents,
5817 Elf_Internal_Rela * rel,
5818 bfd_vma value,
5819 struct bfd_link_info * info,
5820 asection * sym_sec,
5821 const char * sym_name,
5822 int sym_flags,
0945cdfd 5823 struct elf_link_hash_entry * h,
f2a9dd69 5824 bfd_boolean * unresolved_reloc_p,
8029a119 5825 char ** error_message)
252b5132
RH
5826{
5827 unsigned long r_type = howto->type;
5828 unsigned long r_symndx;
5829 bfd_byte * hit_data = contents + rel->r_offset;
5830 bfd * dynobj = NULL;
5831 Elf_Internal_Shdr * symtab_hdr;
5832 struct elf_link_hash_entry ** sym_hashes;
5833 bfd_vma * local_got_offsets;
5834 asection * sgot = NULL;
5835 asection * splt = NULL;
5836 asection * sreloc = NULL;
252b5132 5837 bfd_vma addend;
ba96a88f
NC
5838 bfd_signed_vma signed_addend;
5839 struct elf32_arm_link_hash_table * globals;
f21f3fe0 5840
9c504268
PB
5841 globals = elf32_arm_hash_table (info);
5842
0ffa91dd
NC
5843 BFD_ASSERT (is_arm_elf (input_bfd));
5844
5845 /* Some relocation types map to different relocations depending on the
9c504268 5846 target. We pick the right one here. */
eb043451
PB
5847 r_type = arm_real_reloc_type (globals, r_type);
5848 if (r_type != howto->type)
5849 howto = elf32_arm_howto_from_type (r_type);
9c504268 5850
cac15327
NC
5851 /* If the start address has been set, then set the EF_ARM_HASENTRY
5852 flag. Setting this more than once is redundant, but the cost is
5853 not too high, and it keeps the code simple.
99e4ae17 5854
cac15327
NC
5855 The test is done here, rather than somewhere else, because the
5856 start address is only set just before the final link commences.
5857
5858 Note - if the user deliberately sets a start address of 0, the
5859 flag will not be set. */
5860 if (bfd_get_start_address (output_bfd) != 0)
5861 elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
99e4ae17 5862
252b5132
RH
5863 dynobj = elf_hash_table (info)->dynobj;
5864 if (dynobj)
5865 {
5866 sgot = bfd_get_section_by_name (dynobj, ".got");
5867 splt = bfd_get_section_by_name (dynobj, ".plt");
5868 }
0ffa91dd 5869 symtab_hdr = & elf_symtab_hdr (input_bfd);
252b5132
RH
5870 sym_hashes = elf_sym_hashes (input_bfd);
5871 local_got_offsets = elf_local_got_offsets (input_bfd);
5872 r_symndx = ELF32_R_SYM (rel->r_info);
5873
4e7fd91e 5874 if (globals->use_rel)
ba96a88f 5875 {
4e7fd91e
PB
5876 addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
5877
5878 if (addend & ((howto->src_mask + 1) >> 1))
5879 {
5880 signed_addend = -1;
5881 signed_addend &= ~ howto->src_mask;
5882 signed_addend |= addend;
5883 }
5884 else
5885 signed_addend = addend;
ba96a88f
NC
5886 }
5887 else
4e7fd91e 5888 addend = signed_addend = rel->r_addend;
f21f3fe0 5889
252b5132
RH
5890 switch (r_type)
5891 {
5892 case R_ARM_NONE:
28a094c2
DJ
5893 /* We don't need to find a value for this symbol. It's just a
5894 marker. */
5895 *unresolved_reloc_p = FALSE;
252b5132
RH
5896 return bfd_reloc_ok;
5897
00a97672
RS
5898 case R_ARM_ABS12:
5899 if (!globals->vxworks_p)
5900 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
5901
252b5132
RH
5902 case R_ARM_PC24:
5903 case R_ARM_ABS32:
bb224fc3 5904 case R_ARM_ABS32_NOI:
252b5132 5905 case R_ARM_REL32:
bb224fc3 5906 case R_ARM_REL32_NOI:
5b5bb741
PB
5907 case R_ARM_CALL:
5908 case R_ARM_JUMP24:
dfc5f959 5909 case R_ARM_XPC25:
eb043451 5910 case R_ARM_PREL31:
7359ea65 5911 case R_ARM_PLT32:
7359ea65
DJ
5912 /* Handle relocations which should use the PLT entry. ABS32/REL32
5913 will use the symbol's value, which may point to a PLT entry, but we
5914 don't need to handle that here. If we created a PLT entry, all
5915 branches in this object should go to it. */
bb224fc3
MS
5916 if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32
5917 && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI)
7359ea65 5918 && h != NULL
c84cd8ee 5919 && splt != NULL
7359ea65
DJ
5920 && h->plt.offset != (bfd_vma) -1)
5921 {
c84cd8ee
DJ
5922 /* If we've created a .plt section, and assigned a PLT entry to
5923 this function, it should not be known to bind locally. If
5924 it were, we would have cleared the PLT entry. */
7359ea65
DJ
5925 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
5926
5927 value = (splt->output_section->vma
5928 + splt->output_offset
5929 + h->plt.offset);
0945cdfd 5930 *unresolved_reloc_p = FALSE;
7359ea65
DJ
5931 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5932 contents, rel->r_offset, value,
00a97672 5933 rel->r_addend);
7359ea65
DJ
5934 }
5935
67687978
PB
5936 /* When generating a shared object or relocatable executable, these
5937 relocations are copied into the output file to be resolved at
5938 run time. */
5939 if ((info->shared || globals->root.is_relocatable_executable)
7359ea65 5940 && (input_section->flags & SEC_ALLOC)
3348747a
NS
5941 && !(elf32_arm_hash_table (info)->vxworks_p
5942 && strcmp (input_section->output_section->name,
5943 ".tls_vars") == 0)
bb224fc3 5944 && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI)
ee06dc07 5945 || !SYMBOL_CALLS_LOCAL (info, h))
7359ea65
DJ
5946 && (h == NULL
5947 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5948 || h->root.type != bfd_link_hash_undefweak)
5949 && r_type != R_ARM_PC24
5b5bb741
PB
5950 && r_type != R_ARM_CALL
5951 && r_type != R_ARM_JUMP24
ee06dc07 5952 && r_type != R_ARM_PREL31
7359ea65 5953 && r_type != R_ARM_PLT32)
252b5132 5954 {
947216bf
AM
5955 Elf_Internal_Rela outrel;
5956 bfd_byte *loc;
b34976b6 5957 bfd_boolean skip, relocate;
f21f3fe0 5958
0945cdfd
DJ
5959 *unresolved_reloc_p = FALSE;
5960
252b5132
RH
5961 if (sreloc == NULL)
5962 {
5963 const char * name;
f21f3fe0 5964
252b5132
RH
5965 name = (bfd_elf_string_from_elf_section
5966 (input_bfd,
5967 elf_elfheader (input_bfd)->e_shstrndx,
5968 elf_section_data (input_section)->rel_hdr.sh_name));
5969 if (name == NULL)
5970 return bfd_reloc_notsupported;
f21f3fe0 5971
00a97672 5972 BFD_ASSERT (reloc_section_p (globals, name, input_section));
f21f3fe0 5973
252b5132
RH
5974 sreloc = bfd_get_section_by_name (dynobj, name);
5975 BFD_ASSERT (sreloc != NULL);
5976 }
f21f3fe0 5977
b34976b6
AM
5978 skip = FALSE;
5979 relocate = FALSE;
f21f3fe0 5980
00a97672 5981 outrel.r_addend = addend;
c629eae0
JJ
5982 outrel.r_offset =
5983 _bfd_elf_section_offset (output_bfd, info, input_section,
5984 rel->r_offset);
5985 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 5986 skip = TRUE;
0bb2d96a 5987 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 5988 skip = TRUE, relocate = TRUE;
252b5132
RH
5989 outrel.r_offset += (input_section->output_section->vma
5990 + input_section->output_offset);
f21f3fe0 5991
252b5132 5992 if (skip)
0bb2d96a 5993 memset (&outrel, 0, sizeof outrel);
5e681ec4
PB
5994 else if (h != NULL
5995 && h->dynindx != -1
7359ea65 5996 && (!info->shared
5e681ec4 5997 || !info->symbolic
f5385ebf 5998 || !h->def_regular))
5e681ec4 5999 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH
6000 else
6001 {
a16385dc
MM
6002 int symbol;
6003
5e681ec4 6004 /* This symbol is local, or marked to become local. */
b7693d02
DJ
6005 if (sym_flags == STT_ARM_TFUNC)
6006 value |= 1;
a16385dc 6007 if (globals->symbian_p)
6366ff1e 6008 {
74541ad4
AM
6009 asection *osec;
6010
6366ff1e
MM
6011 /* On Symbian OS, the data segment and text segement
6012 can be relocated independently. Therefore, we
6013 must indicate the segment to which this
6014 relocation is relative. The BPABI allows us to
6015 use any symbol in the right segment; we just use
6016 the section symbol as it is convenient. (We
6017 cannot use the symbol given by "h" directly as it
74541ad4
AM
6018 will not appear in the dynamic symbol table.)
6019
6020 Note that the dynamic linker ignores the section
6021 symbol value, so we don't subtract osec->vma
6022 from the emitted reloc addend. */
10dbd1f3 6023 if (sym_sec)
74541ad4 6024 osec = sym_sec->output_section;
10dbd1f3 6025 else
74541ad4
AM
6026 osec = input_section->output_section;
6027 symbol = elf_section_data (osec)->dynindx;
6028 if (symbol == 0)
6029 {
6030 struct elf_link_hash_table *htab = elf_hash_table (info);
6031
6032 if ((osec->flags & SEC_READONLY) == 0
6033 && htab->data_index_section != NULL)
6034 osec = htab->data_index_section;
6035 else
6036 osec = htab->text_index_section;
6037 symbol = elf_section_data (osec)->dynindx;
6038 }
6366ff1e
MM
6039 BFD_ASSERT (symbol != 0);
6040 }
a16385dc
MM
6041 else
6042 /* On SVR4-ish systems, the dynamic loader cannot
6043 relocate the text and data segments independently,
6044 so the symbol does not matter. */
6045 symbol = 0;
6046 outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
00a97672
RS
6047 if (globals->use_rel)
6048 relocate = TRUE;
6049 else
6050 outrel.r_addend += value;
252b5132 6051 }
f21f3fe0 6052
947216bf 6053 loc = sreloc->contents;
00a97672
RS
6054 loc += sreloc->reloc_count++ * RELOC_SIZE (globals);
6055 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
9a5aca8c 6056
f21f3fe0 6057 /* If this reloc is against an external symbol, we do not want to
252b5132 6058 fiddle with the addend. Otherwise, we need to include the symbol
9b485d32 6059 value so that it becomes an addend for the dynamic reloc. */
252b5132
RH
6060 if (! relocate)
6061 return bfd_reloc_ok;
9a5aca8c 6062
f21f3fe0 6063 return _bfd_final_link_relocate (howto, input_bfd, input_section,
252b5132
RH
6064 contents, rel->r_offset, value,
6065 (bfd_vma) 0);
6066 }
6067 else switch (r_type)
6068 {
00a97672
RS
6069 case R_ARM_ABS12:
6070 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
6071
dfc5f959 6072 case R_ARM_XPC25: /* Arm BLX instruction. */
5b5bb741
PB
6073 case R_ARM_CALL:
6074 case R_ARM_JUMP24:
8029a119 6075 case R_ARM_PC24: /* Arm B/BL instruction. */
7359ea65 6076 case R_ARM_PLT32:
906e58ca
NC
6077 {
6078 bfd_vma from;
6079 bfd_signed_vma branch_offset;
6080 struct elf32_arm_stub_hash_entry *stub_entry = NULL;
6081
6082 from = (input_section->output_section->vma
6083 + input_section->output_offset
6084 + rel->r_offset);
6085 branch_offset = (bfd_signed_vma)(value - from);
6086
dfc5f959 6087 if (r_type == R_ARM_XPC25)
252b5132 6088 {
dfc5f959
NC
6089 /* Check for Arm calling Arm function. */
6090 /* FIXME: Should we translate the instruction into a BL
6091 instruction instead ? */
6092 if (sym_flags != STT_ARM_TFUNC)
d003868e
AM
6093 (*_bfd_error_handler)
6094 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
6095 input_bfd,
6096 h ? h->root.root.string : "(local)");
dfc5f959 6097 }
906e58ca 6098 else if (r_type != R_ARM_CALL)
dfc5f959
NC
6099 {
6100 /* Check for Arm calling Thumb function. */
6101 if (sym_flags == STT_ARM_TFUNC)
6102 {
f2a9dd69
DJ
6103 if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
6104 output_bfd, input_section,
6105 hit_data, sym_sec, rel->r_offset,
6106 signed_addend, value,
6107 error_message))
6108 return bfd_reloc_ok;
6109 else
6110 return bfd_reloc_dangerous;
dfc5f959 6111 }
252b5132 6112 }
ba96a88f 6113
906e58ca 6114 /* Check if a stub has to be inserted because the
8029a119 6115 destination is too far or we are changing mode. */
906e58ca
NC
6116 if (r_type == R_ARM_CALL)
6117 {
6118 if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET
6119 || branch_offset < ARM_MAX_BWD_BRANCH_OFFSET
6120 || sym_flags == STT_ARM_TFUNC)
6121 {
6122 /* The target is out of reach, so redirect the
6123 branch to the local stub for this function. */
6124
6125 stub_entry = elf32_arm_get_stub_entry (input_section,
6126 sym_sec, h,
6127 rel, globals);
6128 if (stub_entry != NULL)
6129 value = (stub_entry->stub_offset
6130 + stub_entry->stub_sec->output_offset
6131 + stub_entry->stub_sec->output_section->vma);
6132 }
6133 }
6134
dea514f5
PB
6135 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
6136 where:
6137 S is the address of the symbol in the relocation.
6138 P is address of the instruction being relocated.
6139 A is the addend (extracted from the instruction) in bytes.
6140
6141 S is held in 'value'.
6142 P is the base address of the section containing the
6143 instruction plus the offset of the reloc into that
6144 section, ie:
6145 (input_section->output_section->vma +
6146 input_section->output_offset +
6147 rel->r_offset).
6148 A is the addend, converted into bytes, ie:
6149 (signed_addend * 4)
6150
6151 Note: None of these operations have knowledge of the pipeline
6152 size of the processor, thus it is up to the assembler to
6153 encode this information into the addend. */
6154 value -= (input_section->output_section->vma
6155 + input_section->output_offset);
6156 value -= rel->r_offset;
4e7fd91e
PB
6157 if (globals->use_rel)
6158 value += (signed_addend << howto->size);
6159 else
6160 /* RELA addends do not have to be adjusted by howto->size. */
6161 value += signed_addend;
23080146 6162
dcb5e6e6
NC
6163 signed_addend = value;
6164 signed_addend >>= howto->rightshift;
9a5aca8c 6165
5ab79981
PB
6166 /* A branch to an undefined weak symbol is turned into a jump to
6167 the next instruction. */
6168 if (h && h->root.type == bfd_link_hash_undefweak)
6169 {
6170 value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000)
6171 | 0x0affffff;
6172 }
6173 else
59f2c4e7 6174 {
9b485d32 6175 /* Perform a signed range check. */
dcb5e6e6 6176 if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
59f2c4e7
NC
6177 || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
6178 return bfd_reloc_overflow;
9a5aca8c 6179
5ab79981 6180 addend = (value & 2);
39b41c9c 6181
5ab79981
PB
6182 value = (signed_addend & howto->dst_mask)
6183 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
39b41c9c 6184
5ab79981 6185 /* Set the H bit in the BLX instruction. */
39b41c9c 6186 if (sym_flags == STT_ARM_TFUNC)
39b41c9c 6187 {
5ab79981
PB
6188 if (addend)
6189 value |= (1 << 24);
6190 else
6191 value &= ~(bfd_vma)(1 << 24);
6192 }
6193 if (r_type == R_ARM_CALL)
6194 {
6195 /* Select the correct instruction (BL or BLX). */
906e58ca 6196 /* Only if we are not handling a BL to a stub. In this
8029a119 6197 case, mode switching is performed by the stub. */
906e58ca 6198 if (sym_flags == STT_ARM_TFUNC && !stub_entry)
5ab79981
PB
6199 value |= (1 << 28);
6200 else
6201 {
6202 value &= ~(bfd_vma)(1 << 28);
6203 value |= (1 << 24);
6204 }
39b41c9c
PB
6205 }
6206 }
906e58ca 6207 }
252b5132 6208 break;
f21f3fe0 6209
252b5132
RH
6210 case R_ARM_ABS32:
6211 value += addend;
6212 if (sym_flags == STT_ARM_TFUNC)
6213 value |= 1;
6214 break;
f21f3fe0 6215
bb224fc3
MS
6216 case R_ARM_ABS32_NOI:
6217 value += addend;
6218 break;
6219
252b5132 6220 case R_ARM_REL32:
a8bc6c78
PB
6221 value += addend;
6222 if (sym_flags == STT_ARM_TFUNC)
6223 value |= 1;
252b5132 6224 value -= (input_section->output_section->vma
62efb346 6225 + input_section->output_offset + rel->r_offset);
252b5132 6226 break;
eb043451 6227
bb224fc3
MS
6228 case R_ARM_REL32_NOI:
6229 value += addend;
6230 value -= (input_section->output_section->vma
6231 + input_section->output_offset + rel->r_offset);
6232 break;
6233
eb043451
PB
6234 case R_ARM_PREL31:
6235 value -= (input_section->output_section->vma
6236 + input_section->output_offset + rel->r_offset);
6237 value += signed_addend;
6238 if (! h || h->root.type != bfd_link_hash_undefweak)
6239 {
8029a119 6240 /* Check for overflow. */
eb043451
PB
6241 if ((value ^ (value >> 1)) & (1 << 30))
6242 return bfd_reloc_overflow;
6243 }
6244 value &= 0x7fffffff;
6245 value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
6246 if (sym_flags == STT_ARM_TFUNC)
6247 value |= 1;
6248 break;
252b5132 6249 }
f21f3fe0 6250
252b5132
RH
6251 bfd_put_32 (input_bfd, value, hit_data);
6252 return bfd_reloc_ok;
6253
6254 case R_ARM_ABS8:
6255 value += addend;
6256 if ((long) value > 0x7f || (long) value < -0x80)
6257 return bfd_reloc_overflow;
6258
6259 bfd_put_8 (input_bfd, value, hit_data);
6260 return bfd_reloc_ok;
6261
6262 case R_ARM_ABS16:
6263 value += addend;
6264
6265 if ((long) value > 0x7fff || (long) value < -0x8000)
6266 return bfd_reloc_overflow;
6267
6268 bfd_put_16 (input_bfd, value, hit_data);
6269 return bfd_reloc_ok;
6270
252b5132 6271 case R_ARM_THM_ABS5:
9b485d32 6272 /* Support ldr and str instructions for the thumb. */
4e7fd91e
PB
6273 if (globals->use_rel)
6274 {
6275 /* Need to refetch addend. */
6276 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
6277 /* ??? Need to determine shift amount from operand size. */
6278 addend >>= howto->rightshift;
6279 }
252b5132
RH
6280 value += addend;
6281
6282 /* ??? Isn't value unsigned? */
6283 if ((long) value > 0x1f || (long) value < -0x10)
6284 return bfd_reloc_overflow;
6285
6286 /* ??? Value needs to be properly shifted into place first. */
6287 value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
6288 bfd_put_16 (input_bfd, value, hit_data);
6289 return bfd_reloc_ok;
6290
2cab6cc3
MS
6291 case R_ARM_THM_ALU_PREL_11_0:
6292 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
6293 {
6294 bfd_vma insn;
6295 bfd_signed_vma relocation;
6296
6297 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
6298 | bfd_get_16 (input_bfd, hit_data + 2);
6299
6300 if (globals->use_rel)
6301 {
6302 signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4)
6303 | ((insn & (1 << 26)) >> 15);
6304 if (insn & 0xf00000)
6305 signed_addend = -signed_addend;
6306 }
6307
6308 relocation = value + signed_addend;
6309 relocation -= (input_section->output_section->vma
6310 + input_section->output_offset
6311 + rel->r_offset);
6312
6313 value = abs (relocation);
6314
6315 if (value >= 0x1000)
6316 return bfd_reloc_overflow;
6317
6318 insn = (insn & 0xfb0f8f00) | (value & 0xff)
6319 | ((value & 0x700) << 4)
6320 | ((value & 0x800) << 15);
6321 if (relocation < 0)
6322 insn |= 0xa00000;
6323
6324 bfd_put_16 (input_bfd, insn >> 16, hit_data);
6325 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
6326
6327 return bfd_reloc_ok;
6328 }
6329
6330 case R_ARM_THM_PC12:
6331 /* Corresponds to: ldr.w reg, [pc, #offset]. */
6332 {
6333 bfd_vma insn;
6334 bfd_signed_vma relocation;
6335
6336 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
6337 | bfd_get_16 (input_bfd, hit_data + 2);
6338
6339 if (globals->use_rel)
6340 {
6341 signed_addend = insn & 0xfff;
6342 if (!(insn & (1 << 23)))
6343 signed_addend = -signed_addend;
6344 }
6345
6346 relocation = value + signed_addend;
6347 relocation -= (input_section->output_section->vma
6348 + input_section->output_offset
6349 + rel->r_offset);
6350
6351 value = abs (relocation);
6352
6353 if (value >= 0x1000)
6354 return bfd_reloc_overflow;
6355
6356 insn = (insn & 0xff7ff000) | value;
6357 if (relocation >= 0)
6358 insn |= (1 << 23);
6359
6360 bfd_put_16 (input_bfd, insn >> 16, hit_data);
6361 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
6362
6363 return bfd_reloc_ok;
6364 }
6365
dfc5f959 6366 case R_ARM_THM_XPC22:
c19d1205 6367 case R_ARM_THM_CALL:
bd97cb95 6368 case R_ARM_THM_JUMP24:
dfc5f959 6369 /* Thumb BL (branch long instruction). */
252b5132 6370 {
b34976b6 6371 bfd_vma relocation;
e95de063 6372 bfd_vma reloc_sign;
b34976b6
AM
6373 bfd_boolean overflow = FALSE;
6374 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
6375 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
e95de063
MS
6376 bfd_signed_vma reloc_signed_max;
6377 bfd_signed_vma reloc_signed_min;
b34976b6 6378 bfd_vma check;
252b5132 6379 bfd_signed_vma signed_check;
e95de063
MS
6380 int bitsize;
6381 int thumb2 = using_thumb2 (globals);
252b5132 6382
5ab79981
PB
6383 /* A branch to an undefined weak symbol is turned into a jump to
6384 the next instruction. */
6385 if (h && h->root.type == bfd_link_hash_undefweak)
6386 {
6387 bfd_put_16 (input_bfd, 0xe000, hit_data);
6388 bfd_put_16 (input_bfd, 0xbf00, hit_data + 2);
6389 return bfd_reloc_ok;
6390 }
6391
e95de063
MS
6392 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
6393 with Thumb-1) involving the J1 and J2 bits. */
4e7fd91e
PB
6394 if (globals->use_rel)
6395 {
e95de063
MS
6396 bfd_vma s = (upper_insn & (1 << 10)) >> 10;
6397 bfd_vma upper = upper_insn & 0x3ff;
6398 bfd_vma lower = lower_insn & 0x7ff;
6399 bfd_vma j1 = (lower_insn & (1 << 13)) >> 13;
6400 bfd_vma j2 = (lower_insn & (1 << 11)) >> 11;
6401 bfd_vma i1 = j1 ^ s ? 0 : 1;
6402 bfd_vma i2 = j2 ^ s ? 0 : 1;
6403
6404 addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1);
6405 /* Sign extend. */
6406 addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24);
6407
4e7fd91e
PB
6408 signed_addend = addend;
6409 }
cb1afa5c 6410
dfc5f959
NC
6411 if (r_type == R_ARM_THM_XPC22)
6412 {
6413 /* Check for Thumb to Thumb call. */
6414 /* FIXME: Should we translate the instruction into a BL
6415 instruction instead ? */
6416 if (sym_flags == STT_ARM_TFUNC)
d003868e
AM
6417 (*_bfd_error_handler)
6418 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
6419 input_bfd,
6420 h ? h->root.root.string : "(local)");
dfc5f959
NC
6421 }
6422 else
252b5132 6423 {
dfc5f959
NC
6424 /* If it is not a call to Thumb, assume call to Arm.
6425 If it is a call relative to a section name, then it is not a
b7693d02
DJ
6426 function call at all, but rather a long jump. Calls through
6427 the PLT do not require stubs. */
6428 if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION
6429 && (h == NULL || splt == NULL
6430 || h->plt.offset == (bfd_vma) -1))
dfc5f959 6431 {
bd97cb95 6432 if (globals->use_blx && r_type == R_ARM_THM_CALL)
39b41c9c
PB
6433 {
6434 /* Convert BL to BLX. */
6435 lower_insn = (lower_insn & ~0x1000) | 0x0800;
6436 }
8029a119
NC
6437 else if (r_type != R_ARM_THM_CALL)
6438 {
6439 if (elf32_thumb_to_arm_stub
6440 (info, sym_name, input_bfd, output_bfd, input_section,
6441 hit_data, sym_sec, rel->r_offset, signed_addend, value,
6442 error_message))
6443 return bfd_reloc_ok;
6444 else
6445 return bfd_reloc_dangerous;
6446 }
da5938a2 6447 }
bd97cb95
DJ
6448 else if (sym_flags == STT_ARM_TFUNC && globals->use_blx
6449 && r_type == R_ARM_THM_CALL)
39b41c9c
PB
6450 {
6451 /* Make sure this is a BL. */
6452 lower_insn |= 0x1800;
6453 }
252b5132 6454 }
f21f3fe0 6455
b7693d02
DJ
6456 /* Handle calls via the PLT. */
6457 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
6458 {
6459 value = (splt->output_section->vma
6460 + splt->output_offset
6461 + h->plt.offset);
bd97cb95 6462 if (globals->use_blx && r_type == R_ARM_THM_CALL)
33bfe774
JB
6463 {
6464 /* If the Thumb BLX instruction is available, convert the
6465 BL to a BLX instruction to call the ARM-mode PLT entry. */
39b41c9c 6466 lower_insn = (lower_insn & ~0x1000) | 0x0800;
33bfe774
JB
6467 }
6468 else
6469 /* Target the Thumb stub before the ARM PLT entry. */
6470 value -= PLT_THUMB_STUB_SIZE;
0945cdfd 6471 *unresolved_reloc_p = FALSE;
b7693d02
DJ
6472 }
6473
906e58ca
NC
6474 if (r_type == R_ARM_THM_CALL)
6475 {
6476 /* Check if a stub has to be inserted because the destination
8029a119 6477 is too far. */
906e58ca
NC
6478 bfd_vma from;
6479 bfd_signed_vma branch_offset;
6480 struct elf32_arm_stub_hash_entry *stub_entry = NULL;
6481
6482 from = (input_section->output_section->vma
6483 + input_section->output_offset
6484 + rel->r_offset);
6485 branch_offset = (bfd_signed_vma)(value - from);
6486
6487 if ((!thumb2
6488 && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET
6489 || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET)))
6490 ||
6491 (thumb2
6492 && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET
f4ac8484
DJ
6493 || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))
6494 || ((sym_flags != STT_ARM_TFUNC) && !globals->use_blx))
906e58ca
NC
6495 {
6496 /* The target is out of reach or we are changing modes, so
6497 redirect the branch to the local stub for this
6498 function. */
6499 stub_entry = elf32_arm_get_stub_entry (input_section,
6500 sym_sec, h,
6501 rel, globals);
6502 if (stub_entry != NULL)
6503 value = (stub_entry->stub_offset
6504 + stub_entry->stub_sec->output_offset
6505 + stub_entry->stub_sec->output_section->vma);
6506
f4ac8484
DJ
6507 /* If this call becomes a call to Arm, force BLX. */
6508 if (globals->use_blx)
6509 {
6510 if ((stub_entry
6511 && !arm_stub_is_thumb (stub_entry->stub_type))
6512 || (sym_flags != STT_ARM_TFUNC))
6513 lower_insn = (lower_insn & ~0x1000) | 0x0800;
6514 }
906e58ca
NC
6515 }
6516 }
6517
ba96a88f 6518 relocation = value + signed_addend;
f21f3fe0 6519
252b5132 6520 relocation -= (input_section->output_section->vma
ba96a88f
NC
6521 + input_section->output_offset
6522 + rel->r_offset);
9a5aca8c 6523
252b5132
RH
6524 check = relocation >> howto->rightshift;
6525
6526 /* If this is a signed value, the rightshift just dropped
6527 leading 1 bits (assuming twos complement). */
6528 if ((bfd_signed_vma) relocation >= 0)
6529 signed_check = check;
6530 else
6531 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
6532
e95de063
MS
6533 /* Calculate the permissable maximum and minimum values for
6534 this relocation according to whether we're relocating for
6535 Thumb-2 or not. */
6536 bitsize = howto->bitsize;
6537 if (!thumb2)
6538 bitsize -= 2;
6539 reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift;
6540 reloc_signed_min = ~reloc_signed_max;
6541
252b5132 6542 /* Assumes two's complement. */
ba96a88f 6543 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
b34976b6 6544 overflow = TRUE;
252b5132 6545
bd97cb95 6546 if ((lower_insn & 0x5000) == 0x4000)
c62e1cc3
NC
6547 /* For a BLX instruction, make sure that the relocation is rounded up
6548 to a word boundary. This follows the semantics of the instruction
6549 which specifies that bit 1 of the target address will come from bit
6550 1 of the base address. */
6551 relocation = (relocation + 2) & ~ 3;
cb1afa5c 6552
e95de063
MS
6553 /* Put RELOCATION back into the insn. Assumes two's complement.
6554 We use the Thumb-2 encoding, which is safe even if dealing with
6555 a Thumb-1 instruction by virtue of our overflow check above. */
6556 reloc_sign = (signed_check < 0) ? 1 : 0;
6557 upper_insn = (upper_insn & ~(bfd_vma) 0x7ff)
6558 | ((relocation >> 12) & 0x3ff)
6559 | (reloc_sign << 10);
906e58ca 6560 lower_insn = (lower_insn & ~(bfd_vma) 0x2fff)
e95de063
MS
6561 | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13)
6562 | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11)
6563 | ((relocation >> 1) & 0x7ff);
c62e1cc3 6564
252b5132
RH
6565 /* Put the relocated value back in the object file: */
6566 bfd_put_16 (input_bfd, upper_insn, hit_data);
6567 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
6568
6569 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
6570 }
6571 break;
6572
c19d1205
ZW
6573 case R_ARM_THM_JUMP19:
6574 /* Thumb32 conditional branch instruction. */
6575 {
6576 bfd_vma relocation;
6577 bfd_boolean overflow = FALSE;
6578 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
6579 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
a00a1f35
MS
6580 bfd_signed_vma reloc_signed_max = 0xffffe;
6581 bfd_signed_vma reloc_signed_min = -0x100000;
c19d1205
ZW
6582 bfd_signed_vma signed_check;
6583
6584 /* Need to refetch the addend, reconstruct the top three bits,
6585 and squish the two 11 bit pieces together. */
6586 if (globals->use_rel)
6587 {
6588 bfd_vma S = (upper_insn & 0x0400) >> 10;
a00a1f35 6589 bfd_vma upper = (upper_insn & 0x003f);
c19d1205
ZW
6590 bfd_vma J1 = (lower_insn & 0x2000) >> 13;
6591 bfd_vma J2 = (lower_insn & 0x0800) >> 11;
6592 bfd_vma lower = (lower_insn & 0x07ff);
6593
a00a1f35
MS
6594 upper |= J1 << 6;
6595 upper |= J2 << 7;
6596 upper |= (!S) << 8;
c19d1205
ZW
6597 upper -= 0x0100; /* Sign extend. */
6598
6599 addend = (upper << 12) | (lower << 1);
6600 signed_addend = addend;
6601 }
6602
bd97cb95
DJ
6603 /* Handle calls via the PLT. */
6604 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
6605 {
6606 value = (splt->output_section->vma
6607 + splt->output_offset
6608 + h->plt.offset);
6609 /* Target the Thumb stub before the ARM PLT entry. */
6610 value -= PLT_THUMB_STUB_SIZE;
6611 *unresolved_reloc_p = FALSE;
6612 }
6613
c19d1205
ZW
6614 /* ??? Should handle interworking? GCC might someday try to
6615 use this for tail calls. */
6616
6617 relocation = value + signed_addend;
6618 relocation -= (input_section->output_section->vma
6619 + input_section->output_offset
6620 + rel->r_offset);
a00a1f35 6621 signed_check = (bfd_signed_vma) relocation;
c19d1205 6622
c19d1205
ZW
6623 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
6624 overflow = TRUE;
6625
6626 /* Put RELOCATION back into the insn. */
6627 {
6628 bfd_vma S = (relocation & 0x00100000) >> 20;
6629 bfd_vma J2 = (relocation & 0x00080000) >> 19;
6630 bfd_vma J1 = (relocation & 0x00040000) >> 18;
6631 bfd_vma hi = (relocation & 0x0003f000) >> 12;
6632 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
6633
a00a1f35 6634 upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi;
c19d1205
ZW
6635 lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
6636 }
6637
6638 /* Put the relocated value back in the object file: */
6639 bfd_put_16 (input_bfd, upper_insn, hit_data);
6640 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
6641
6642 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
6643 }
6644
6645 case R_ARM_THM_JUMP11:
6646 case R_ARM_THM_JUMP8:
6647 case R_ARM_THM_JUMP6:
51c5503b
NC
6648 /* Thumb B (branch) instruction). */
6649 {
6cf9e9fe 6650 bfd_signed_vma relocation;
51c5503b
NC
6651 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
6652 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
51c5503b
NC
6653 bfd_signed_vma signed_check;
6654
c19d1205
ZW
6655 /* CZB cannot jump backward. */
6656 if (r_type == R_ARM_THM_JUMP6)
6657 reloc_signed_min = 0;
6658
4e7fd91e 6659 if (globals->use_rel)
6cf9e9fe 6660 {
4e7fd91e
PB
6661 /* Need to refetch addend. */
6662 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
6663 if (addend & ((howto->src_mask + 1) >> 1))
6664 {
6665 signed_addend = -1;
6666 signed_addend &= ~ howto->src_mask;
6667 signed_addend |= addend;
6668 }
6669 else
6670 signed_addend = addend;
6671 /* The value in the insn has been right shifted. We need to
6672 undo this, so that we can perform the address calculation
6673 in terms of bytes. */
6674 signed_addend <<= howto->rightshift;
6cf9e9fe 6675 }
6cf9e9fe 6676 relocation = value + signed_addend;
51c5503b
NC
6677
6678 relocation -= (input_section->output_section->vma
6679 + input_section->output_offset
6680 + rel->r_offset);
6681
6cf9e9fe
NC
6682 relocation >>= howto->rightshift;
6683 signed_check = relocation;
c19d1205
ZW
6684
6685 if (r_type == R_ARM_THM_JUMP6)
6686 relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
6687 else
6688 relocation &= howto->dst_mask;
51c5503b 6689 relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
cedb70c5 6690
51c5503b
NC
6691 bfd_put_16 (input_bfd, relocation, hit_data);
6692
6693 /* Assumes two's complement. */
6694 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
6695 return bfd_reloc_overflow;
6696
6697 return bfd_reloc_ok;
6698 }
cedb70c5 6699
8375c36b
PB
6700 case R_ARM_ALU_PCREL7_0:
6701 case R_ARM_ALU_PCREL15_8:
6702 case R_ARM_ALU_PCREL23_15:
6703 {
6704 bfd_vma insn;
6705 bfd_vma relocation;
6706
6707 insn = bfd_get_32 (input_bfd, hit_data);
4e7fd91e
PB
6708 if (globals->use_rel)
6709 {
6710 /* Extract the addend. */
6711 addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
6712 signed_addend = addend;
6713 }
8375c36b
PB
6714 relocation = value + signed_addend;
6715
6716 relocation -= (input_section->output_section->vma
6717 + input_section->output_offset
6718 + rel->r_offset);
6719 insn = (insn & ~0xfff)
6720 | ((howto->bitpos << 7) & 0xf00)
6721 | ((relocation >> howto->bitpos) & 0xff);
6722 bfd_put_32 (input_bfd, value, hit_data);
6723 }
6724 return bfd_reloc_ok;
6725
252b5132
RH
6726 case R_ARM_GNU_VTINHERIT:
6727 case R_ARM_GNU_VTENTRY:
6728 return bfd_reloc_ok;
6729
c19d1205 6730 case R_ARM_GOTOFF32:
252b5132
RH
6731 /* Relocation is relative to the start of the
6732 global offset table. */
6733
6734 BFD_ASSERT (sgot != NULL);
6735 if (sgot == NULL)
6736 return bfd_reloc_notsupported;
9a5aca8c 6737
cedb70c5 6738 /* If we are addressing a Thumb function, we need to adjust the
ee29b9fb
RE
6739 address by one, so that attempts to call the function pointer will
6740 correctly interpret it as Thumb code. */
6741 if (sym_flags == STT_ARM_TFUNC)
6742 value += 1;
6743
252b5132
RH
6744 /* Note that sgot->output_offset is not involved in this
6745 calculation. We always want the start of .got. If we
6746 define _GLOBAL_OFFSET_TABLE in a different way, as is
6747 permitted by the ABI, we might have to change this
9b485d32 6748 calculation. */
252b5132 6749 value -= sgot->output_section->vma;
f21f3fe0 6750 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17 6751 contents, rel->r_offset, value,
00a97672 6752 rel->r_addend);
252b5132
RH
6753
6754 case R_ARM_GOTPC:
a7c10850 6755 /* Use global offset table as symbol value. */
252b5132 6756 BFD_ASSERT (sgot != NULL);
f21f3fe0 6757
252b5132
RH
6758 if (sgot == NULL)
6759 return bfd_reloc_notsupported;
6760
0945cdfd 6761 *unresolved_reloc_p = FALSE;
252b5132 6762 value = sgot->output_section->vma;
f21f3fe0 6763 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17 6764 contents, rel->r_offset, value,
00a97672 6765 rel->r_addend);
f21f3fe0 6766
252b5132 6767 case R_ARM_GOT32:
eb043451 6768 case R_ARM_GOT_PREL:
252b5132 6769 /* Relocation is to the entry for this symbol in the
9b485d32 6770 global offset table. */
252b5132
RH
6771 if (sgot == NULL)
6772 return bfd_reloc_notsupported;
f21f3fe0 6773
252b5132
RH
6774 if (h != NULL)
6775 {
6776 bfd_vma off;
5e681ec4 6777 bfd_boolean dyn;
f21f3fe0 6778
252b5132
RH
6779 off = h->got.offset;
6780 BFD_ASSERT (off != (bfd_vma) -1);
5e681ec4 6781 dyn = globals->root.dynamic_sections_created;
f21f3fe0 6782
5e681ec4 6783 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
50d6c878 6784 || (info->shared
5e681ec4
PB
6785 && SYMBOL_REFERENCES_LOCAL (info, h))
6786 || (ELF_ST_VISIBILITY (h->other)
6787 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH
6788 {
6789 /* This is actually a static link, or it is a -Bsymbolic link
6790 and the symbol is defined locally. We must initialize this
6791 entry in the global offset table. Since the offset must
6792 always be a multiple of 4, we use the least significant bit
6793 to record whether we have initialized it already.
f21f3fe0 6794
00a97672 6795 When doing a dynamic link, we create a .rel(a).got relocation
f21f3fe0 6796 entry to initialize the value. This is done in the
9b485d32 6797 finish_dynamic_symbol routine. */
252b5132
RH
6798 if ((off & 1) != 0)
6799 off &= ~1;
6800 else
6801 {
ee29b9fb
RE
6802 /* If we are addressing a Thumb function, we need to
6803 adjust the address by one, so that attempts to
6804 call the function pointer will correctly
6805 interpret it as Thumb code. */
6806 if (sym_flags == STT_ARM_TFUNC)
6807 value |= 1;
6808
252b5132
RH
6809 bfd_put_32 (output_bfd, value, sgot->contents + off);
6810 h->got.offset |= 1;
6811 }
6812 }
0945cdfd
DJ
6813 else
6814 *unresolved_reloc_p = FALSE;
f21f3fe0 6815
252b5132
RH
6816 value = sgot->output_offset + off;
6817 }
6818 else
6819 {
6820 bfd_vma off;
f21f3fe0 6821
252b5132
RH
6822 BFD_ASSERT (local_got_offsets != NULL &&
6823 local_got_offsets[r_symndx] != (bfd_vma) -1);
f21f3fe0 6824
252b5132 6825 off = local_got_offsets[r_symndx];
f21f3fe0 6826
252b5132
RH
6827 /* The offset must always be a multiple of 4. We use the
6828 least significant bit to record whether we have already
9b485d32 6829 generated the necessary reloc. */
252b5132
RH
6830 if ((off & 1) != 0)
6831 off &= ~1;
6832 else
6833 {
b7693d02
DJ
6834 /* If we are addressing a Thumb function, we need to
6835 adjust the address by one, so that attempts to
6836 call the function pointer will correctly
6837 interpret it as Thumb code. */
6838 if (sym_flags == STT_ARM_TFUNC)
6839 value |= 1;
6840
00a97672
RS
6841 if (globals->use_rel)
6842 bfd_put_32 (output_bfd, value, sgot->contents + off);
f21f3fe0 6843
252b5132
RH
6844 if (info->shared)
6845 {
6846 asection * srelgot;
947216bf
AM
6847 Elf_Internal_Rela outrel;
6848 bfd_byte *loc;
f21f3fe0 6849
00a97672
RS
6850 srelgot = (bfd_get_section_by_name
6851 (dynobj, RELOC_SECTION (globals, ".got")));
252b5132 6852 BFD_ASSERT (srelgot != NULL);
f21f3fe0 6853
00a97672 6854 outrel.r_addend = addend + value;
252b5132 6855 outrel.r_offset = (sgot->output_section->vma
f21f3fe0 6856 + sgot->output_offset
252b5132
RH
6857 + off);
6858 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
947216bf 6859 loc = srelgot->contents;
00a97672
RS
6860 loc += srelgot->reloc_count++ * RELOC_SIZE (globals);
6861 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
252b5132 6862 }
f21f3fe0 6863
252b5132
RH
6864 local_got_offsets[r_symndx] |= 1;
6865 }
f21f3fe0 6866
252b5132
RH
6867 value = sgot->output_offset + off;
6868 }
eb043451
PB
6869 if (r_type != R_ARM_GOT32)
6870 value += sgot->output_section->vma;
9a5aca8c 6871
f21f3fe0 6872 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17 6873 contents, rel->r_offset, value,
00a97672 6874 rel->r_addend);
f21f3fe0 6875
ba93b8ac
DJ
6876 case R_ARM_TLS_LDO32:
6877 value = value - dtpoff_base (info);
6878
6879 return _bfd_final_link_relocate (howto, input_bfd, input_section,
00a97672
RS
6880 contents, rel->r_offset, value,
6881 rel->r_addend);
ba93b8ac
DJ
6882
6883 case R_ARM_TLS_LDM32:
6884 {
6885 bfd_vma off;
6886
6887 if (globals->sgot == NULL)
6888 abort ();
6889
6890 off = globals->tls_ldm_got.offset;
6891
6892 if ((off & 1) != 0)
6893 off &= ~1;
6894 else
6895 {
6896 /* If we don't know the module number, create a relocation
6897 for it. */
6898 if (info->shared)
6899 {
6900 Elf_Internal_Rela outrel;
6901 bfd_byte *loc;
6902
6903 if (globals->srelgot == NULL)
6904 abort ();
6905
00a97672 6906 outrel.r_addend = 0;
ba93b8ac
DJ
6907 outrel.r_offset = (globals->sgot->output_section->vma
6908 + globals->sgot->output_offset + off);
6909 outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
6910
00a97672
RS
6911 if (globals->use_rel)
6912 bfd_put_32 (output_bfd, outrel.r_addend,
6913 globals->sgot->contents + off);
ba93b8ac
DJ
6914
6915 loc = globals->srelgot->contents;
00a97672
RS
6916 loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals);
6917 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac
DJ
6918 }
6919 else
6920 bfd_put_32 (output_bfd, 1, globals->sgot->contents + off);
6921
6922 globals->tls_ldm_got.offset |= 1;
6923 }
6924
906e58ca 6925 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
ba93b8ac
DJ
6926 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
6927
6928 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6929 contents, rel->r_offset, value,
00a97672 6930 rel->r_addend);
ba93b8ac
DJ
6931 }
6932
6933 case R_ARM_TLS_GD32:
6934 case R_ARM_TLS_IE32:
6935 {
6936 bfd_vma off;
6937 int indx;
6938 char tls_type;
6939
6940 if (globals->sgot == NULL)
6941 abort ();
6942
6943 indx = 0;
6944 if (h != NULL)
6945 {
6946 bfd_boolean dyn;
6947 dyn = globals->root.dynamic_sections_created;
6948 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
6949 && (!info->shared
6950 || !SYMBOL_REFERENCES_LOCAL (info, h)))
6951 {
6952 *unresolved_reloc_p = FALSE;
6953 indx = h->dynindx;
6954 }
6955 off = h->got.offset;
6956 tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
6957 }
6958 else
6959 {
6960 if (local_got_offsets == NULL)
6961 abort ();
6962 off = local_got_offsets[r_symndx];
6963 tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
6964 }
6965
6966 if (tls_type == GOT_UNKNOWN)
6967 abort ();
6968
6969 if ((off & 1) != 0)
6970 off &= ~1;
6971 else
6972 {
6973 bfd_boolean need_relocs = FALSE;
6974 Elf_Internal_Rela outrel;
6975 bfd_byte *loc = NULL;
6976 int cur_off = off;
6977
6978 /* The GOT entries have not been initialized yet. Do it
6979 now, and emit any relocations. If both an IE GOT and a
6980 GD GOT are necessary, we emit the GD first. */
6981
6982 if ((info->shared || indx != 0)
6983 && (h == NULL
6984 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6985 || h->root.type != bfd_link_hash_undefweak))
6986 {
6987 need_relocs = TRUE;
6988 if (globals->srelgot == NULL)
6989 abort ();
6990 loc = globals->srelgot->contents;
00a97672 6991 loc += globals->srelgot->reloc_count * RELOC_SIZE (globals);
ba93b8ac
DJ
6992 }
6993
6994 if (tls_type & GOT_TLS_GD)
6995 {
6996 if (need_relocs)
6997 {
00a97672 6998 outrel.r_addend = 0;
ba93b8ac 6999 outrel.r_offset = (globals->sgot->output_section->vma
00a97672
RS
7000 + globals->sgot->output_offset
7001 + cur_off);
ba93b8ac 7002 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
ba93b8ac 7003
00a97672
RS
7004 if (globals->use_rel)
7005 bfd_put_32 (output_bfd, outrel.r_addend,
7006 globals->sgot->contents + cur_off);
7007
7008 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac 7009 globals->srelgot->reloc_count++;
00a97672 7010 loc += RELOC_SIZE (globals);
ba93b8ac
DJ
7011
7012 if (indx == 0)
7013 bfd_put_32 (output_bfd, value - dtpoff_base (info),
7014 globals->sgot->contents + cur_off + 4);
7015 else
7016 {
00a97672 7017 outrel.r_addend = 0;
ba93b8ac
DJ
7018 outrel.r_info = ELF32_R_INFO (indx,
7019 R_ARM_TLS_DTPOFF32);
7020 outrel.r_offset += 4;
00a97672
RS
7021
7022 if (globals->use_rel)
7023 bfd_put_32 (output_bfd, outrel.r_addend,
7024 globals->sgot->contents + cur_off + 4);
7025
7026
7027 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac 7028 globals->srelgot->reloc_count++;
00a97672 7029 loc += RELOC_SIZE (globals);
ba93b8ac
DJ
7030 }
7031 }
7032 else
7033 {
7034 /* If we are not emitting relocations for a
7035 general dynamic reference, then we must be in a
7036 static link or an executable link with the
7037 symbol binding locally. Mark it as belonging
7038 to module 1, the executable. */
7039 bfd_put_32 (output_bfd, 1,
7040 globals->sgot->contents + cur_off);
7041 bfd_put_32 (output_bfd, value - dtpoff_base (info),
7042 globals->sgot->contents + cur_off + 4);
7043 }
7044
7045 cur_off += 8;
7046 }
7047
7048 if (tls_type & GOT_TLS_IE)
7049 {
7050 if (need_relocs)
7051 {
00a97672
RS
7052 if (indx == 0)
7053 outrel.r_addend = value - dtpoff_base (info);
7054 else
7055 outrel.r_addend = 0;
ba93b8ac
DJ
7056 outrel.r_offset = (globals->sgot->output_section->vma
7057 + globals->sgot->output_offset
7058 + cur_off);
7059 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
7060
00a97672
RS
7061 if (globals->use_rel)
7062 bfd_put_32 (output_bfd, outrel.r_addend,
ba93b8ac
DJ
7063 globals->sgot->contents + cur_off);
7064
00a97672 7065 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac 7066 globals->srelgot->reloc_count++;
00a97672 7067 loc += RELOC_SIZE (globals);
ba93b8ac
DJ
7068 }
7069 else
7070 bfd_put_32 (output_bfd, tpoff (info, value),
7071 globals->sgot->contents + cur_off);
7072 cur_off += 4;
7073 }
7074
7075 if (h != NULL)
7076 h->got.offset |= 1;
7077 else
7078 local_got_offsets[r_symndx] |= 1;
7079 }
7080
7081 if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
7082 off += 8;
906e58ca 7083 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
ba93b8ac
DJ
7084 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
7085
7086 return _bfd_final_link_relocate (howto, input_bfd, input_section,
7087 contents, rel->r_offset, value,
00a97672 7088 rel->r_addend);
ba93b8ac
DJ
7089 }
7090
7091 case R_ARM_TLS_LE32:
7092 if (info->shared)
7093 {
7094 (*_bfd_error_handler)
7095 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
7096 input_bfd, input_section,
7097 (long) rel->r_offset, howto->name);
906e58ca 7098 return FALSE;
ba93b8ac
DJ
7099 }
7100 else
7101 value = tpoff (info, value);
906e58ca 7102
ba93b8ac 7103 return _bfd_final_link_relocate (howto, input_bfd, input_section,
00a97672
RS
7104 contents, rel->r_offset, value,
7105 rel->r_addend);
ba93b8ac 7106
319850b4
JB
7107 case R_ARM_V4BX:
7108 if (globals->fix_v4bx)
845b51d6
PB
7109 {
7110 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
319850b4 7111
845b51d6
PB
7112 /* Ensure that we have a BX instruction. */
7113 BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
319850b4 7114
845b51d6
PB
7115 if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf)
7116 {
7117 /* Branch to veneer. */
7118 bfd_vma glue_addr;
7119 glue_addr = elf32_arm_bx_glue (info, insn & 0xf);
7120 glue_addr -= input_section->output_section->vma
7121 + input_section->output_offset
7122 + rel->r_offset + 8;
7123 insn = (insn & 0xf0000000) | 0x0a000000
7124 | ((glue_addr >> 2) & 0x00ffffff);
7125 }
7126 else
7127 {
7128 /* Preserve Rm (lowest four bits) and the condition code
7129 (highest four bits). Other bits encode MOV PC,Rm. */
7130 insn = (insn & 0xf000000f) | 0x01a0f000;
7131 }
319850b4 7132
845b51d6
PB
7133 bfd_put_32 (input_bfd, insn, hit_data);
7134 }
319850b4
JB
7135 return bfd_reloc_ok;
7136
b6895b4f
PB
7137 case R_ARM_MOVW_ABS_NC:
7138 case R_ARM_MOVT_ABS:
7139 case R_ARM_MOVW_PREL_NC:
7140 case R_ARM_MOVT_PREL:
92f5d02b
MS
7141 /* Until we properly support segment-base-relative addressing then
7142 we assume the segment base to be zero, as for the group relocations.
7143 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
7144 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
7145 case R_ARM_MOVW_BREL_NC:
7146 case R_ARM_MOVW_BREL:
7147 case R_ARM_MOVT_BREL:
b6895b4f
PB
7148 {
7149 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7150
7151 if (globals->use_rel)
7152 {
7153 addend = ((insn >> 4) & 0xf000) | (insn & 0xfff);
39623e12 7154 signed_addend = (addend ^ 0x8000) - 0x8000;
b6895b4f 7155 }
92f5d02b 7156
b6895b4f 7157 value += signed_addend;
b6895b4f
PB
7158
7159 if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL)
7160 value -= (input_section->output_section->vma
7161 + input_section->output_offset + rel->r_offset);
7162
92f5d02b
MS
7163 if (r_type == R_ARM_MOVW_BREL && value >= 0x10000)
7164 return bfd_reloc_overflow;
7165
7166 if (sym_flags == STT_ARM_TFUNC)
7167 value |= 1;
7168
7169 if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL
7170 || r_type == R_ARM_MOVT_BREL)
b6895b4f
PB
7171 value >>= 16;
7172
7173 insn &= 0xfff0f000;
7174 insn |= value & 0xfff;
7175 insn |= (value & 0xf000) << 4;
7176 bfd_put_32 (input_bfd, insn, hit_data);
7177 }
7178 return bfd_reloc_ok;
7179
7180 case R_ARM_THM_MOVW_ABS_NC:
7181 case R_ARM_THM_MOVT_ABS:
7182 case R_ARM_THM_MOVW_PREL_NC:
7183 case R_ARM_THM_MOVT_PREL:
92f5d02b
MS
7184 /* Until we properly support segment-base-relative addressing then
7185 we assume the segment base to be zero, as for the above relocations.
7186 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
7187 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
7188 as R_ARM_THM_MOVT_ABS. */
7189 case R_ARM_THM_MOVW_BREL_NC:
7190 case R_ARM_THM_MOVW_BREL:
7191 case R_ARM_THM_MOVT_BREL:
b6895b4f
PB
7192 {
7193 bfd_vma insn;
906e58ca 7194
b6895b4f
PB
7195 insn = bfd_get_16 (input_bfd, hit_data) << 16;
7196 insn |= bfd_get_16 (input_bfd, hit_data + 2);
7197
7198 if (globals->use_rel)
7199 {
7200 addend = ((insn >> 4) & 0xf000)
7201 | ((insn >> 15) & 0x0800)
7202 | ((insn >> 4) & 0x0700)
7203 | (insn & 0x00ff);
39623e12 7204 signed_addend = (addend ^ 0x8000) - 0x8000;
b6895b4f 7205 }
92f5d02b 7206
b6895b4f 7207 value += signed_addend;
b6895b4f
PB
7208
7209 if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL)
7210 value -= (input_section->output_section->vma
7211 + input_section->output_offset + rel->r_offset);
7212
92f5d02b
MS
7213 if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000)
7214 return bfd_reloc_overflow;
7215
7216 if (sym_flags == STT_ARM_TFUNC)
7217 value |= 1;
7218
7219 if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL
7220 || r_type == R_ARM_THM_MOVT_BREL)
b6895b4f
PB
7221 value >>= 16;
7222
7223 insn &= 0xfbf08f00;
7224 insn |= (value & 0xf000) << 4;
7225 insn |= (value & 0x0800) << 15;
7226 insn |= (value & 0x0700) << 4;
7227 insn |= (value & 0x00ff);
7228
7229 bfd_put_16 (input_bfd, insn >> 16, hit_data);
7230 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
7231 }
7232 return bfd_reloc_ok;
7233
4962c51a
MS
7234 case R_ARM_ALU_PC_G0_NC:
7235 case R_ARM_ALU_PC_G1_NC:
7236 case R_ARM_ALU_PC_G0:
7237 case R_ARM_ALU_PC_G1:
7238 case R_ARM_ALU_PC_G2:
7239 case R_ARM_ALU_SB_G0_NC:
7240 case R_ARM_ALU_SB_G1_NC:
7241 case R_ARM_ALU_SB_G0:
7242 case R_ARM_ALU_SB_G1:
7243 case R_ARM_ALU_SB_G2:
7244 {
7245 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7246 bfd_vma pc = input_section->output_section->vma
7247 + input_section->output_offset + rel->r_offset;
7248 /* sb should be the origin of the *segment* containing the symbol.
7249 It is not clear how to obtain this OS-dependent value, so we
7250 make an arbitrary choice of zero. */
7251 bfd_vma sb = 0;
7252 bfd_vma residual;
7253 bfd_vma g_n;
7254 bfd_signed_vma signed_value;
7255 int group = 0;
7256
7257 /* Determine which group of bits to select. */
7258 switch (r_type)
7259 {
7260 case R_ARM_ALU_PC_G0_NC:
7261 case R_ARM_ALU_PC_G0:
7262 case R_ARM_ALU_SB_G0_NC:
7263 case R_ARM_ALU_SB_G0:
7264 group = 0;
7265 break;
7266
7267 case R_ARM_ALU_PC_G1_NC:
7268 case R_ARM_ALU_PC_G1:
7269 case R_ARM_ALU_SB_G1_NC:
7270 case R_ARM_ALU_SB_G1:
7271 group = 1;
7272 break;
7273
7274 case R_ARM_ALU_PC_G2:
7275 case R_ARM_ALU_SB_G2:
7276 group = 2;
7277 break;
7278
7279 default:
906e58ca 7280 abort ();
4962c51a
MS
7281 }
7282
7283 /* If REL, extract the addend from the insn. If RELA, it will
7284 have already been fetched for us. */
7285 if (globals->use_rel)
7286 {
7287 int negative;
7288 bfd_vma constant = insn & 0xff;
7289 bfd_vma rotation = (insn & 0xf00) >> 8;
7290
7291 if (rotation == 0)
7292 signed_addend = constant;
7293 else
7294 {
7295 /* Compensate for the fact that in the instruction, the
7296 rotation is stored in multiples of 2 bits. */
7297 rotation *= 2;
7298
7299 /* Rotate "constant" right by "rotation" bits. */
7300 signed_addend = (constant >> rotation) |
7301 (constant << (8 * sizeof (bfd_vma) - rotation));
7302 }
7303
7304 /* Determine if the instruction is an ADD or a SUB.
7305 (For REL, this determines the sign of the addend.) */
7306 negative = identify_add_or_sub (insn);
7307 if (negative == 0)
7308 {
7309 (*_bfd_error_handler)
7310 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
7311 input_bfd, input_section,
7312 (long) rel->r_offset, howto->name);
906e58ca 7313 return bfd_reloc_overflow;
4962c51a
MS
7314 }
7315
7316 signed_addend *= negative;
7317 }
7318
7319 /* Compute the value (X) to go in the place. */
7320 if (r_type == R_ARM_ALU_PC_G0_NC
7321 || r_type == R_ARM_ALU_PC_G1_NC
7322 || r_type == R_ARM_ALU_PC_G0
7323 || r_type == R_ARM_ALU_PC_G1
7324 || r_type == R_ARM_ALU_PC_G2)
7325 /* PC relative. */
7326 signed_value = value - pc + signed_addend;
7327 else
7328 /* Section base relative. */
7329 signed_value = value - sb + signed_addend;
7330
7331 /* If the target symbol is a Thumb function, then set the
7332 Thumb bit in the address. */
7333 if (sym_flags == STT_ARM_TFUNC)
7334 signed_value |= 1;
7335
7336 /* Calculate the value of the relevant G_n, in encoded
7337 constant-with-rotation format. */
7338 g_n = calculate_group_reloc_mask (abs (signed_value), group,
7339 &residual);
7340
7341 /* Check for overflow if required. */
7342 if ((r_type == R_ARM_ALU_PC_G0
7343 || r_type == R_ARM_ALU_PC_G1
7344 || r_type == R_ARM_ALU_PC_G2
7345 || r_type == R_ARM_ALU_SB_G0
7346 || r_type == R_ARM_ALU_SB_G1
7347 || r_type == R_ARM_ALU_SB_G2) && residual != 0)
7348 {
7349 (*_bfd_error_handler)
7350 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7351 input_bfd, input_section,
7352 (long) rel->r_offset, abs (signed_value), howto->name);
7353 return bfd_reloc_overflow;
7354 }
7355
7356 /* Mask out the value and the ADD/SUB part of the opcode; take care
7357 not to destroy the S bit. */
7358 insn &= 0xff1ff000;
7359
7360 /* Set the opcode according to whether the value to go in the
7361 place is negative. */
7362 if (signed_value < 0)
7363 insn |= 1 << 22;
7364 else
7365 insn |= 1 << 23;
7366
7367 /* Encode the offset. */
7368 insn |= g_n;
7369
7370 bfd_put_32 (input_bfd, insn, hit_data);
7371 }
7372 return bfd_reloc_ok;
7373
7374 case R_ARM_LDR_PC_G0:
7375 case R_ARM_LDR_PC_G1:
7376 case R_ARM_LDR_PC_G2:
7377 case R_ARM_LDR_SB_G0:
7378 case R_ARM_LDR_SB_G1:
7379 case R_ARM_LDR_SB_G2:
7380 {
7381 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7382 bfd_vma pc = input_section->output_section->vma
7383 + input_section->output_offset + rel->r_offset;
7384 bfd_vma sb = 0; /* See note above. */
7385 bfd_vma residual;
7386 bfd_signed_vma signed_value;
7387 int group = 0;
7388
7389 /* Determine which groups of bits to calculate. */
7390 switch (r_type)
7391 {
7392 case R_ARM_LDR_PC_G0:
7393 case R_ARM_LDR_SB_G0:
7394 group = 0;
7395 break;
7396
7397 case R_ARM_LDR_PC_G1:
7398 case R_ARM_LDR_SB_G1:
7399 group = 1;
7400 break;
7401
7402 case R_ARM_LDR_PC_G2:
7403 case R_ARM_LDR_SB_G2:
7404 group = 2;
7405 break;
7406
7407 default:
906e58ca 7408 abort ();
4962c51a
MS
7409 }
7410
7411 /* If REL, extract the addend from the insn. If RELA, it will
7412 have already been fetched for us. */
7413 if (globals->use_rel)
7414 {
7415 int negative = (insn & (1 << 23)) ? 1 : -1;
7416 signed_addend = negative * (insn & 0xfff);
7417 }
7418
7419 /* Compute the value (X) to go in the place. */
7420 if (r_type == R_ARM_LDR_PC_G0
7421 || r_type == R_ARM_LDR_PC_G1
7422 || r_type == R_ARM_LDR_PC_G2)
7423 /* PC relative. */
7424 signed_value = value - pc + signed_addend;
7425 else
7426 /* Section base relative. */
7427 signed_value = value - sb + signed_addend;
7428
7429 /* Calculate the value of the relevant G_{n-1} to obtain
7430 the residual at that stage. */
7431 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7432
7433 /* Check for overflow. */
7434 if (residual >= 0x1000)
7435 {
7436 (*_bfd_error_handler)
7437 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7438 input_bfd, input_section,
7439 (long) rel->r_offset, abs (signed_value), howto->name);
7440 return bfd_reloc_overflow;
7441 }
7442
7443 /* Mask out the value and U bit. */
7444 insn &= 0xff7ff000;
7445
7446 /* Set the U bit if the value to go in the place is non-negative. */
7447 if (signed_value >= 0)
7448 insn |= 1 << 23;
7449
7450 /* Encode the offset. */
7451 insn |= residual;
7452
7453 bfd_put_32 (input_bfd, insn, hit_data);
7454 }
7455 return bfd_reloc_ok;
7456
7457 case R_ARM_LDRS_PC_G0:
7458 case R_ARM_LDRS_PC_G1:
7459 case R_ARM_LDRS_PC_G2:
7460 case R_ARM_LDRS_SB_G0:
7461 case R_ARM_LDRS_SB_G1:
7462 case R_ARM_LDRS_SB_G2:
7463 {
7464 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7465 bfd_vma pc = input_section->output_section->vma
7466 + input_section->output_offset + rel->r_offset;
7467 bfd_vma sb = 0; /* See note above. */
7468 bfd_vma residual;
7469 bfd_signed_vma signed_value;
7470 int group = 0;
7471
7472 /* Determine which groups of bits to calculate. */
7473 switch (r_type)
7474 {
7475 case R_ARM_LDRS_PC_G0:
7476 case R_ARM_LDRS_SB_G0:
7477 group = 0;
7478 break;
7479
7480 case R_ARM_LDRS_PC_G1:
7481 case R_ARM_LDRS_SB_G1:
7482 group = 1;
7483 break;
7484
7485 case R_ARM_LDRS_PC_G2:
7486 case R_ARM_LDRS_SB_G2:
7487 group = 2;
7488 break;
7489
7490 default:
906e58ca 7491 abort ();
4962c51a
MS
7492 }
7493
7494 /* If REL, extract the addend from the insn. If RELA, it will
7495 have already been fetched for us. */
7496 if (globals->use_rel)
7497 {
7498 int negative = (insn & (1 << 23)) ? 1 : -1;
7499 signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf));
7500 }
7501
7502 /* Compute the value (X) to go in the place. */
7503 if (r_type == R_ARM_LDRS_PC_G0
7504 || r_type == R_ARM_LDRS_PC_G1
7505 || r_type == R_ARM_LDRS_PC_G2)
7506 /* PC relative. */
7507 signed_value = value - pc + signed_addend;
7508 else
7509 /* Section base relative. */
7510 signed_value = value - sb + signed_addend;
7511
7512 /* Calculate the value of the relevant G_{n-1} to obtain
7513 the residual at that stage. */
7514 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7515
7516 /* Check for overflow. */
7517 if (residual >= 0x100)
7518 {
7519 (*_bfd_error_handler)
7520 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7521 input_bfd, input_section,
7522 (long) rel->r_offset, abs (signed_value), howto->name);
7523 return bfd_reloc_overflow;
7524 }
7525
7526 /* Mask out the value and U bit. */
7527 insn &= 0xff7ff0f0;
7528
7529 /* Set the U bit if the value to go in the place is non-negative. */
7530 if (signed_value >= 0)
7531 insn |= 1 << 23;
7532
7533 /* Encode the offset. */
7534 insn |= ((residual & 0xf0) << 4) | (residual & 0xf);
7535
7536 bfd_put_32 (input_bfd, insn, hit_data);
7537 }
7538 return bfd_reloc_ok;
7539
7540 case R_ARM_LDC_PC_G0:
7541 case R_ARM_LDC_PC_G1:
7542 case R_ARM_LDC_PC_G2:
7543 case R_ARM_LDC_SB_G0:
7544 case R_ARM_LDC_SB_G1:
7545 case R_ARM_LDC_SB_G2:
7546 {
7547 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7548 bfd_vma pc = input_section->output_section->vma
7549 + input_section->output_offset + rel->r_offset;
7550 bfd_vma sb = 0; /* See note above. */
7551 bfd_vma residual;
7552 bfd_signed_vma signed_value;
7553 int group = 0;
7554
7555 /* Determine which groups of bits to calculate. */
7556 switch (r_type)
7557 {
7558 case R_ARM_LDC_PC_G0:
7559 case R_ARM_LDC_SB_G0:
7560 group = 0;
7561 break;
7562
7563 case R_ARM_LDC_PC_G1:
7564 case R_ARM_LDC_SB_G1:
7565 group = 1;
7566 break;
7567
7568 case R_ARM_LDC_PC_G2:
7569 case R_ARM_LDC_SB_G2:
7570 group = 2;
7571 break;
7572
7573 default:
906e58ca 7574 abort ();
4962c51a
MS
7575 }
7576
7577 /* If REL, extract the addend from the insn. If RELA, it will
7578 have already been fetched for us. */
7579 if (globals->use_rel)
7580 {
7581 int negative = (insn & (1 << 23)) ? 1 : -1;
7582 signed_addend = negative * ((insn & 0xff) << 2);
7583 }
7584
7585 /* Compute the value (X) to go in the place. */
7586 if (r_type == R_ARM_LDC_PC_G0
7587 || r_type == R_ARM_LDC_PC_G1
7588 || r_type == R_ARM_LDC_PC_G2)
7589 /* PC relative. */
7590 signed_value = value - pc + signed_addend;
7591 else
7592 /* Section base relative. */
7593 signed_value = value - sb + signed_addend;
7594
7595 /* Calculate the value of the relevant G_{n-1} to obtain
7596 the residual at that stage. */
7597 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7598
7599 /* Check for overflow. (The absolute value to go in the place must be
7600 divisible by four and, after having been divided by four, must
7601 fit in eight bits.) */
7602 if ((residual & 0x3) != 0 || residual >= 0x400)
7603 {
7604 (*_bfd_error_handler)
7605 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7606 input_bfd, input_section,
7607 (long) rel->r_offset, abs (signed_value), howto->name);
7608 return bfd_reloc_overflow;
7609 }
7610
7611 /* Mask out the value and U bit. */
7612 insn &= 0xff7fff00;
7613
7614 /* Set the U bit if the value to go in the place is non-negative. */
7615 if (signed_value >= 0)
7616 insn |= 1 << 23;
7617
7618 /* Encode the offset. */
7619 insn |= residual >> 2;
7620
7621 bfd_put_32 (input_bfd, insn, hit_data);
7622 }
7623 return bfd_reloc_ok;
7624
252b5132
RH
7625 default:
7626 return bfd_reloc_notsupported;
7627 }
7628}
7629
98c1d4aa
NC
7630/* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
7631static void
57e8b36a
NC
7632arm_add_to_rel (bfd * abfd,
7633 bfd_byte * address,
7634 reloc_howto_type * howto,
7635 bfd_signed_vma increment)
98c1d4aa 7636{
98c1d4aa
NC
7637 bfd_signed_vma addend;
7638
bd97cb95
DJ
7639 if (howto->type == R_ARM_THM_CALL
7640 || howto->type == R_ARM_THM_JUMP24)
98c1d4aa 7641 {
9a5aca8c
AM
7642 int upper_insn, lower_insn;
7643 int upper, lower;
98c1d4aa 7644
9a5aca8c
AM
7645 upper_insn = bfd_get_16 (abfd, address);
7646 lower_insn = bfd_get_16 (abfd, address + 2);
7647 upper = upper_insn & 0x7ff;
7648 lower = lower_insn & 0x7ff;
7649
7650 addend = (upper << 12) | (lower << 1);
ddda4409 7651 addend += increment;
9a5aca8c 7652 addend >>= 1;
98c1d4aa 7653
9a5aca8c
AM
7654 upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
7655 lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
7656
dc810e39
AM
7657 bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
7658 bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
9a5aca8c
AM
7659 }
7660 else
7661 {
7662 bfd_vma contents;
7663
7664 contents = bfd_get_32 (abfd, address);
7665
7666 /* Get the (signed) value from the instruction. */
7667 addend = contents & howto->src_mask;
7668 if (addend & ((howto->src_mask + 1) >> 1))
7669 {
7670 bfd_signed_vma mask;
7671
7672 mask = -1;
7673 mask &= ~ howto->src_mask;
7674 addend |= mask;
7675 }
7676
7677 /* Add in the increment, (which is a byte value). */
7678 switch (howto->type)
7679 {
7680 default:
7681 addend += increment;
7682 break;
7683
7684 case R_ARM_PC24:
c6596c5e 7685 case R_ARM_PLT32:
5b5bb741
PB
7686 case R_ARM_CALL:
7687 case R_ARM_JUMP24:
9a5aca8c 7688 addend <<= howto->size;
dc810e39 7689 addend += increment;
9a5aca8c
AM
7690
7691 /* Should we check for overflow here ? */
7692
7693 /* Drop any undesired bits. */
7694 addend >>= howto->rightshift;
7695 break;
7696 }
7697
7698 contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
7699
7700 bfd_put_32 (abfd, contents, address);
ddda4409 7701 }
98c1d4aa 7702}
252b5132 7703
ba93b8ac
DJ
7704#define IS_ARM_TLS_RELOC(R_TYPE) \
7705 ((R_TYPE) == R_ARM_TLS_GD32 \
7706 || (R_TYPE) == R_ARM_TLS_LDO32 \
7707 || (R_TYPE) == R_ARM_TLS_LDM32 \
7708 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
7709 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
7710 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
7711 || (R_TYPE) == R_ARM_TLS_LE32 \
7712 || (R_TYPE) == R_ARM_TLS_IE32)
7713
252b5132 7714/* Relocate an ARM ELF section. */
906e58ca 7715
b34976b6 7716static bfd_boolean
57e8b36a
NC
7717elf32_arm_relocate_section (bfd * output_bfd,
7718 struct bfd_link_info * info,
7719 bfd * input_bfd,
7720 asection * input_section,
7721 bfd_byte * contents,
7722 Elf_Internal_Rela * relocs,
7723 Elf_Internal_Sym * local_syms,
7724 asection ** local_sections)
252b5132 7725{
b34976b6
AM
7726 Elf_Internal_Shdr *symtab_hdr;
7727 struct elf_link_hash_entry **sym_hashes;
7728 Elf_Internal_Rela *rel;
7729 Elf_Internal_Rela *relend;
7730 const char *name;
b32d3aa2 7731 struct elf32_arm_link_hash_table * globals;
252b5132 7732
4e7fd91e 7733 globals = elf32_arm_hash_table (info);
b491616a 7734
0ffa91dd 7735 symtab_hdr = & elf_symtab_hdr (input_bfd);
252b5132
RH
7736 sym_hashes = elf_sym_hashes (input_bfd);
7737
7738 rel = relocs;
7739 relend = relocs + input_section->reloc_count;
7740 for (; rel < relend; rel++)
7741 {
ba96a88f
NC
7742 int r_type;
7743 reloc_howto_type * howto;
7744 unsigned long r_symndx;
7745 Elf_Internal_Sym * sym;
7746 asection * sec;
252b5132 7747 struct elf_link_hash_entry * h;
ba96a88f
NC
7748 bfd_vma relocation;
7749 bfd_reloc_status_type r;
7750 arelent bfd_reloc;
ba93b8ac 7751 char sym_type;
0945cdfd 7752 bfd_boolean unresolved_reloc = FALSE;
f2a9dd69 7753 char *error_message = NULL;
f21f3fe0 7754
252b5132 7755 r_symndx = ELF32_R_SYM (rel->r_info);
ba96a88f 7756 r_type = ELF32_R_TYPE (rel->r_info);
b32d3aa2 7757 r_type = arm_real_reloc_type (globals, r_type);
252b5132 7758
ba96a88f
NC
7759 if ( r_type == R_ARM_GNU_VTENTRY
7760 || r_type == R_ARM_GNU_VTINHERIT)
252b5132
RH
7761 continue;
7762
b32d3aa2 7763 bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
ba96a88f 7764 howto = bfd_reloc.howto;
252b5132 7765
252b5132
RH
7766 h = NULL;
7767 sym = NULL;
7768 sec = NULL;
9b485d32 7769
252b5132
RH
7770 if (r_symndx < symtab_hdr->sh_info)
7771 {
7772 sym = local_syms + r_symndx;
ba93b8ac 7773 sym_type = ELF32_ST_TYPE (sym->st_info);
252b5132 7774 sec = local_sections[r_symndx];
4e7fd91e 7775 if (globals->use_rel)
f8df10f4 7776 {
4e7fd91e
PB
7777 relocation = (sec->output_section->vma
7778 + sec->output_offset
7779 + sym->st_value);
ab96bf03
AM
7780 if (!info->relocatable
7781 && (sec->flags & SEC_MERGE)
7782 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
f8df10f4 7783 {
4e7fd91e
PB
7784 asection *msec;
7785 bfd_vma addend, value;
7786
39623e12 7787 switch (r_type)
4e7fd91e 7788 {
39623e12
PB
7789 case R_ARM_MOVW_ABS_NC:
7790 case R_ARM_MOVT_ABS:
7791 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
7792 addend = ((value & 0xf0000) >> 4) | (value & 0xfff);
7793 addend = (addend ^ 0x8000) - 0x8000;
7794 break;
f8df10f4 7795
39623e12
PB
7796 case R_ARM_THM_MOVW_ABS_NC:
7797 case R_ARM_THM_MOVT_ABS:
7798 value = bfd_get_16 (input_bfd, contents + rel->r_offset)
7799 << 16;
7800 value |= bfd_get_16 (input_bfd,
7801 contents + rel->r_offset + 2);
7802 addend = ((value & 0xf7000) >> 4) | (value & 0xff)
7803 | ((value & 0x04000000) >> 15);
7804 addend = (addend ^ 0x8000) - 0x8000;
7805 break;
f8df10f4 7806
39623e12
PB
7807 default:
7808 if (howto->rightshift
7809 || (howto->src_mask & (howto->src_mask + 1)))
7810 {
7811 (*_bfd_error_handler)
7812 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
7813 input_bfd, input_section,
7814 (long) rel->r_offset, howto->name);
7815 return FALSE;
7816 }
7817
7818 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
7819
7820 /* Get the (signed) value from the instruction. */
7821 addend = value & howto->src_mask;
7822 if (addend & ((howto->src_mask + 1) >> 1))
7823 {
7824 bfd_signed_vma mask;
7825
7826 mask = -1;
7827 mask &= ~ howto->src_mask;
7828 addend |= mask;
7829 }
7830 break;
4e7fd91e 7831 }
39623e12 7832
4e7fd91e
PB
7833 msec = sec;
7834 addend =
7835 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
7836 - relocation;
7837 addend += msec->output_section->vma + msec->output_offset;
39623e12
PB
7838
7839 /* Cases here must match those in the preceeding
7840 switch statement. */
7841 switch (r_type)
7842 {
7843 case R_ARM_MOVW_ABS_NC:
7844 case R_ARM_MOVT_ABS:
7845 value = (value & 0xfff0f000) | ((addend & 0xf000) << 4)
7846 | (addend & 0xfff);
7847 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
7848 break;
7849
7850 case R_ARM_THM_MOVW_ABS_NC:
7851 case R_ARM_THM_MOVT_ABS:
7852 value = (value & 0xfbf08f00) | ((addend & 0xf700) << 4)
7853 | (addend & 0xff) | ((addend & 0x0800) << 15);
7854 bfd_put_16 (input_bfd, value >> 16,
7855 contents + rel->r_offset);
7856 bfd_put_16 (input_bfd, value,
7857 contents + rel->r_offset + 2);
7858 break;
7859
7860 default:
7861 value = (value & ~ howto->dst_mask)
7862 | (addend & howto->dst_mask);
7863 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
7864 break;
7865 }
f8df10f4 7866 }
f8df10f4 7867 }
4e7fd91e
PB
7868 else
7869 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH
7870 }
7871 else
7872 {
560e09e9 7873 bfd_boolean warned;
560e09e9 7874
b2a8e766
AM
7875 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
7876 r_symndx, symtab_hdr, sym_hashes,
7877 h, sec, relocation,
7878 unresolved_reloc, warned);
ba93b8ac
DJ
7879
7880 sym_type = h->type;
252b5132
RH
7881 }
7882
ab96bf03
AM
7883 if (sec != NULL && elf_discarded_section (sec))
7884 {
7885 /* For relocs against symbols from removed linkonce sections,
7886 or sections discarded by a linker script, we just want the
7887 section contents zeroed. Avoid any special processing. */
7888 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
7889 rel->r_info = 0;
7890 rel->r_addend = 0;
7891 continue;
7892 }
7893
7894 if (info->relocatable)
7895 {
7896 /* This is a relocatable link. We don't have to change
7897 anything, unless the reloc is against a section symbol,
7898 in which case we have to adjust according to where the
7899 section symbol winds up in the output section. */
7900 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
7901 {
7902 if (globals->use_rel)
7903 arm_add_to_rel (input_bfd, contents + rel->r_offset,
7904 howto, (bfd_signed_vma) sec->output_offset);
7905 else
7906 rel->r_addend += sec->output_offset;
7907 }
7908 continue;
7909 }
7910
252b5132
RH
7911 if (h != NULL)
7912 name = h->root.root.string;
7913 else
7914 {
7915 name = (bfd_elf_string_from_elf_section
7916 (input_bfd, symtab_hdr->sh_link, sym->st_name));
7917 if (name == NULL || *name == '\0')
7918 name = bfd_section_name (input_bfd, sec);
7919 }
f21f3fe0 7920
ba93b8ac
DJ
7921 if (r_symndx != 0
7922 && r_type != R_ARM_NONE
7923 && (h == NULL
7924 || h->root.type == bfd_link_hash_defined
7925 || h->root.type == bfd_link_hash_defweak)
7926 && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
7927 {
7928 (*_bfd_error_handler)
7929 ((sym_type == STT_TLS
7930 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
7931 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
7932 input_bfd,
7933 input_section,
7934 (long) rel->r_offset,
7935 howto->name,
7936 name);
7937 }
7938
252b5132
RH
7939 r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
7940 input_section, contents, rel,
7941 relocation, info, sec, name,
7942 (h ? ELF_ST_TYPE (h->type) :
0945cdfd 7943 ELF_ST_TYPE (sym->st_info)), h,
f2a9dd69 7944 &unresolved_reloc, &error_message);
0945cdfd
DJ
7945
7946 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
7947 because such sections are not SEC_ALLOC and thus ld.so will
7948 not process them. */
7949 if (unresolved_reloc
7950 && !((input_section->flags & SEC_DEBUGGING) != 0
7951 && h->def_dynamic))
7952 {
7953 (*_bfd_error_handler)
843fe662
L
7954 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
7955 input_bfd,
7956 input_section,
7957 (long) rel->r_offset,
7958 howto->name,
7959 h->root.root.string);
0945cdfd
DJ
7960 return FALSE;
7961 }
252b5132
RH
7962
7963 if (r != bfd_reloc_ok)
7964 {
252b5132
RH
7965 switch (r)
7966 {
7967 case bfd_reloc_overflow:
cf919dfd
PB
7968 /* If the overflowing reloc was to an undefined symbol,
7969 we have already printed one error message and there
7970 is no point complaining again. */
7971 if ((! h ||
7972 h->root.type != bfd_link_hash_undefined)
7973 && (!((*info->callbacks->reloc_overflow)
dfeffb9f
L
7974 (info, (h ? &h->root : NULL), name, howto->name,
7975 (bfd_vma) 0, input_bfd, input_section,
7976 rel->r_offset))))
b34976b6 7977 return FALSE;
252b5132
RH
7978 break;
7979
7980 case bfd_reloc_undefined:
7981 if (!((*info->callbacks->undefined_symbol)
7982 (info, name, input_bfd, input_section,
b34976b6
AM
7983 rel->r_offset, TRUE)))
7984 return FALSE;
252b5132
RH
7985 break;
7986
7987 case bfd_reloc_outofrange:
f2a9dd69 7988 error_message = _("out of range");
252b5132
RH
7989 goto common_error;
7990
7991 case bfd_reloc_notsupported:
f2a9dd69 7992 error_message = _("unsupported relocation");
252b5132
RH
7993 goto common_error;
7994
7995 case bfd_reloc_dangerous:
f2a9dd69 7996 /* error_message should already be set. */
252b5132
RH
7997 goto common_error;
7998
7999 default:
f2a9dd69 8000 error_message = _("unknown error");
8029a119 8001 /* Fall through. */
252b5132
RH
8002
8003 common_error:
f2a9dd69
DJ
8004 BFD_ASSERT (error_message != NULL);
8005 if (!((*info->callbacks->reloc_dangerous)
8006 (info, error_message, input_bfd, input_section,
252b5132 8007 rel->r_offset)))
b34976b6 8008 return FALSE;
252b5132
RH
8009 break;
8010 }
8011 }
8012 }
8013
b34976b6 8014 return TRUE;
252b5132
RH
8015}
8016
c178919b
NC
8017/* Set the right machine number. */
8018
8019static bfd_boolean
57e8b36a 8020elf32_arm_object_p (bfd *abfd)
c178919b 8021{
5a6c6817 8022 unsigned int mach;
57e8b36a 8023
5a6c6817 8024 mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
c178919b 8025
5a6c6817
NC
8026 if (mach != bfd_mach_arm_unknown)
8027 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
8028
8029 else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
8030 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
e16bb312 8031
e16bb312 8032 else
5a6c6817 8033 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
c178919b
NC
8034
8035 return TRUE;
8036}
8037
fc830a83 8038/* Function to keep ARM specific flags in the ELF header. */
3c9458e9 8039
b34976b6 8040static bfd_boolean
57e8b36a 8041elf32_arm_set_private_flags (bfd *abfd, flagword flags)
252b5132
RH
8042{
8043 if (elf_flags_init (abfd)
8044 && elf_elfheader (abfd)->e_flags != flags)
8045 {
fc830a83
NC
8046 if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
8047 {
fd2ec330 8048 if (flags & EF_ARM_INTERWORK)
d003868e
AM
8049 (*_bfd_error_handler)
8050 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
8051 abfd);
fc830a83 8052 else
d003868e
AM
8053 _bfd_error_handler
8054 (_("Warning: Clearing the interworking flag of %B due to outside request"),
8055 abfd);
fc830a83 8056 }
252b5132
RH
8057 }
8058 else
8059 {
8060 elf_elfheader (abfd)->e_flags = flags;
b34976b6 8061 elf_flags_init (abfd) = TRUE;
252b5132
RH
8062 }
8063
b34976b6 8064 return TRUE;
252b5132
RH
8065}
8066
fc830a83 8067/* Copy backend specific data from one object module to another. */
9b485d32 8068
b34976b6 8069static bfd_boolean
57e8b36a 8070elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
252b5132
RH
8071{
8072 flagword in_flags;
8073 flagword out_flags;
8074
0ffa91dd 8075 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
b34976b6 8076 return TRUE;
252b5132 8077
fc830a83 8078 in_flags = elf_elfheader (ibfd)->e_flags;
252b5132
RH
8079 out_flags = elf_elfheader (obfd)->e_flags;
8080
fc830a83
NC
8081 if (elf_flags_init (obfd)
8082 && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
8083 && in_flags != out_flags)
252b5132 8084 {
252b5132 8085 /* Cannot mix APCS26 and APCS32 code. */
fd2ec330 8086 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
b34976b6 8087 return FALSE;
252b5132
RH
8088
8089 /* Cannot mix float APCS and non-float APCS code. */
fd2ec330 8090 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
b34976b6 8091 return FALSE;
252b5132
RH
8092
8093 /* If the src and dest have different interworking flags
8094 then turn off the interworking bit. */
fd2ec330 8095 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
252b5132 8096 {
fd2ec330 8097 if (out_flags & EF_ARM_INTERWORK)
d003868e
AM
8098 _bfd_error_handler
8099 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
8100 obfd, ibfd);
252b5132 8101
fd2ec330 8102 in_flags &= ~EF_ARM_INTERWORK;
252b5132 8103 }
1006ba19
PB
8104
8105 /* Likewise for PIC, though don't warn for this case. */
fd2ec330
PB
8106 if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
8107 in_flags &= ~EF_ARM_PIC;
252b5132
RH
8108 }
8109
8110 elf_elfheader (obfd)->e_flags = in_flags;
b34976b6 8111 elf_flags_init (obfd) = TRUE;
252b5132 8112
94a3258f
PB
8113 /* Also copy the EI_OSABI field. */
8114 elf_elfheader (obfd)->e_ident[EI_OSABI] =
8115 elf_elfheader (ibfd)->e_ident[EI_OSABI];
8116
104d59d1
JM
8117 /* Copy object attributes. */
8118 _bfd_elf_copy_obj_attributes (ibfd, obfd);
ee065d83
PB
8119
8120 return TRUE;
8121}
8122
8123/* Values for Tag_ABI_PCS_R9_use. */
8124enum
8125{
8126 AEABI_R9_V6,
8127 AEABI_R9_SB,
8128 AEABI_R9_TLS,
8129 AEABI_R9_unused
8130};
8131
8132/* Values for Tag_ABI_PCS_RW_data. */
8133enum
8134{
8135 AEABI_PCS_RW_data_absolute,
8136 AEABI_PCS_RW_data_PCrel,
8137 AEABI_PCS_RW_data_SBrel,
8138 AEABI_PCS_RW_data_unused
8139};
8140
8141/* Values for Tag_ABI_enum_size. */
8142enum
8143{
8144 AEABI_enum_unused,
8145 AEABI_enum_short,
8146 AEABI_enum_wide,
8147 AEABI_enum_forced_wide
8148};
8149
104d59d1
JM
8150/* Determine whether an object attribute tag takes an integer, a
8151 string or both. */
906e58ca 8152
104d59d1
JM
8153static int
8154elf32_arm_obj_attrs_arg_type (int tag)
8155{
8156 if (tag == Tag_compatibility)
8157 return 3;
8158 else if (tag == 4 || tag == 5)
8159 return 2;
8160 else if (tag < 32)
8161 return 1;
8162 else
8163 return (tag & 1) != 0 ? 2 : 1;
8164}
8165
8e79c3df
CM
8166static void
8167elf32_arm_copy_one_eabi_other_attribute (bfd *ibfd, bfd *obfd, obj_attribute_list *in_list)
8168{
8169 switch (in_list->tag)
8170 {
8171 case Tag_VFP_HP_extension:
8172 case Tag_ABI_FP_16bit_format:
8173 bfd_elf_add_obj_attr_int (obfd, OBJ_ATTR_PROC, in_list->tag, in_list->attr.i);
8174 break;
8175
8176 default:
8177 if ((in_list->tag & 127) < 64)
8178 {
8179 _bfd_error_handler
8180 (_("Warning: %B: Unknown EABI object attribute %d"), ibfd, in_list->tag);
8181 break;
8182 }
8183 }
8184}
8185
8186static void
8187elf32_arm_copy_eabi_other_attribute_list (bfd *ibfd, bfd *obfd, obj_attribute_list *in_list)
8188{
8189 for (; in_list; in_list = in_list->next )
8190 elf32_arm_copy_one_eabi_other_attribute (ibfd, obfd, in_list);
8191}
8192
ee065d83
PB
8193/* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
8194 are conflicting attributes. */
906e58ca 8195
ee065d83
PB
8196static bfd_boolean
8197elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
8198{
104d59d1
JM
8199 obj_attribute *in_attr;
8200 obj_attribute *out_attr;
8201 obj_attribute_list *in_list;
8e79c3df 8202 obj_attribute_list *out_list;
ee065d83
PB
8203 /* Some tags have 0 = don't care, 1 = strong requirement,
8204 2 = weak requirement. */
8205 static const int order_312[3] = {3, 1, 2};
b1cc4aeb
PB
8206 /* For use with Tag_VFP_arch. */
8207 static const int order_01243[5] = {0, 1, 2, 4, 3};
ee065d83
PB
8208 int i;
8209
104d59d1 8210 if (!elf_known_obj_attributes_proc (obfd)[0].i)
ee065d83
PB
8211 {
8212 /* This is the first object. Copy the attributes. */
104d59d1 8213 _bfd_elf_copy_obj_attributes (ibfd, obfd);
004ae526
PB
8214
8215 /* Use the Tag_null value to indicate the attributes have been
8216 initialized. */
104d59d1 8217 elf_known_obj_attributes_proc (obfd)[0].i = 1;
004ae526 8218
ee065d83
PB
8219 return TRUE;
8220 }
8221
104d59d1
JM
8222 in_attr = elf_known_obj_attributes_proc (ibfd);
8223 out_attr = elf_known_obj_attributes_proc (obfd);
ee065d83
PB
8224 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
8225 if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i)
8226 {
8e79c3df 8227 /* Ignore mismatches if the object doesn't use floating point. */
ee065d83
PB
8228 if (out_attr[Tag_ABI_FP_number_model].i == 0)
8229 out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i;
8230 else if (in_attr[Tag_ABI_FP_number_model].i != 0)
8231 {
8232 _bfd_error_handler
8233 (_("ERROR: %B uses VFP register arguments, %B does not"),
8234 ibfd, obfd);
8235 return FALSE;
8236 }
8237 }
8238
104d59d1 8239 for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
ee065d83
PB
8240 {
8241 /* Merge this attribute with existing attributes. */
8242 switch (i)
8243 {
8244 case Tag_CPU_raw_name:
8245 case Tag_CPU_name:
004ae526
PB
8246 /* Use whichever has the greatest architecture requirements. We
8247 won't necessarily have both the above tags, so make sure input
8248 name is non-NULL. */
8249 if (in_attr[Tag_CPU_arch].i > out_attr[Tag_CPU_arch].i
8250 && in_attr[i].s)
104d59d1 8251 out_attr[i].s = _bfd_elf_attr_strdup (obfd, in_attr[i].s);
ee065d83
PB
8252 break;
8253
8254 case Tag_ABI_optimization_goals:
8255 case Tag_ABI_FP_optimization_goals:
8256 /* Use the first value seen. */
8257 break;
8258
8259 case Tag_CPU_arch:
8260 case Tag_ARM_ISA_use:
8261 case Tag_THUMB_ISA_use:
ee065d83
PB
8262 case Tag_WMMX_arch:
8263 case Tag_NEON_arch:
8264 /* ??? Do NEON and WMMX conflict? */
8265 case Tag_ABI_FP_rounding:
8266 case Tag_ABI_FP_denormal:
8267 case Tag_ABI_FP_exceptions:
8268 case Tag_ABI_FP_user_exceptions:
8269 case Tag_ABI_FP_number_model:
8270 case Tag_ABI_align8_preserved:
8271 case Tag_ABI_HardFP_use:
8272 /* Use the largest value specified. */
8273 if (in_attr[i].i > out_attr[i].i)
8274 out_attr[i].i = in_attr[i].i;
8275 break;
8276
8277 case Tag_CPU_arch_profile:
8278 /* Warn if conflicting architecture profiles used. */
8279 if (out_attr[i].i && in_attr[i].i && in_attr[i].i != out_attr[i].i)
8280 {
8281 _bfd_error_handler
8282 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
8283 ibfd, in_attr[i].i, out_attr[i].i);
8284 return FALSE;
8285 }
8286 if (in_attr[i].i)
8287 out_attr[i].i = in_attr[i].i;
8288 break;
b1cc4aeb
PB
8289 case Tag_VFP_arch:
8290 if (in_attr[i].i > 4 || out_attr[i].i > 4
8291 || order_01243[in_attr[i].i] > order_01243[out_attr[i].i])
8292 out_attr[i].i = in_attr[i].i;
8293 break;
ee065d83
PB
8294 case Tag_PCS_config:
8295 if (out_attr[i].i == 0)
8296 out_attr[i].i = in_attr[i].i;
8297 else if (in_attr[i].i != 0 && out_attr[i].i != 0)
8298 {
8299 /* It's sometimes ok to mix different configs, so this is only
8300 a warning. */
8301 _bfd_error_handler
8302 (_("Warning: %B: Conflicting platform configuration"), ibfd);
8303 }
8304 break;
8305 case Tag_ABI_PCS_R9_use:
004ae526
PB
8306 if (in_attr[i].i != out_attr[i].i
8307 && out_attr[i].i != AEABI_R9_unused
ee065d83
PB
8308 && in_attr[i].i != AEABI_R9_unused)
8309 {
8310 _bfd_error_handler
8311 (_("ERROR: %B: Conflicting use of R9"), ibfd);
8312 return FALSE;
8313 }
8314 if (out_attr[i].i == AEABI_R9_unused)
8315 out_attr[i].i = in_attr[i].i;
8316 break;
8317 case Tag_ABI_PCS_RW_data:
8318 if (in_attr[i].i == AEABI_PCS_RW_data_SBrel
8319 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB
8320 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused)
8321 {
8322 _bfd_error_handler
8323 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
8324 ibfd);
8325 return FALSE;
8326 }
8327 /* Use the smallest value specified. */
8328 if (in_attr[i].i < out_attr[i].i)
8329 out_attr[i].i = in_attr[i].i;
8330 break;
8331 case Tag_ABI_PCS_RO_data:
8332 /* Use the smallest value specified. */
8333 if (in_attr[i].i < out_attr[i].i)
8334 out_attr[i].i = in_attr[i].i;
8335 break;
8336 case Tag_ABI_PCS_GOT_use:
8337 if (in_attr[i].i > 2 || out_attr[i].i > 2
8338 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
8339 out_attr[i].i = in_attr[i].i;
8340 break;
8341 case Tag_ABI_PCS_wchar_t:
a9dc9481
JM
8342 if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i
8343 && !elf_arm_tdata (obfd)->no_wchar_size_warning)
ee065d83
PB
8344 {
8345 _bfd_error_handler
a9dc9481
JM
8346 (_("warning: %B uses %u-byte wchar_t yet the output is to use %u-byte wchar_t; use of wchar_t values across objects may fail"),
8347 ibfd, in_attr[i].i, out_attr[i].i);
ee065d83 8348 }
a9dc9481 8349 else if (in_attr[i].i && !out_attr[i].i)
ee065d83
PB
8350 out_attr[i].i = in_attr[i].i;
8351 break;
8352 case Tag_ABI_align8_needed:
8353 /* ??? Check against Tag_ABI_align8_preserved. */
8354 if (in_attr[i].i > 2 || out_attr[i].i > 2
8355 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
8356 out_attr[i].i = in_attr[i].i;
8357 break;
8358 case Tag_ABI_enum_size:
8359 if (in_attr[i].i != AEABI_enum_unused)
8360 {
8361 if (out_attr[i].i == AEABI_enum_unused
8362 || out_attr[i].i == AEABI_enum_forced_wide)
8363 {
8364 /* The existing object is compatible with anything.
8365 Use whatever requirements the new object has. */
8366 out_attr[i].i = in_attr[i].i;
8367 }
8368 else if (in_attr[i].i != AEABI_enum_forced_wide
bf21ed78 8369 && out_attr[i].i != in_attr[i].i
0ffa91dd 8370 && !elf_arm_tdata (obfd)->no_enum_size_warning)
ee065d83 8371 {
bf21ed78
MS
8372 const char *aeabi_enum_names[] =
8373 { "", "variable-size", "32-bit", "" };
ee065d83 8374 _bfd_error_handler
bf21ed78
MS
8375 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
8376 ibfd, aeabi_enum_names[in_attr[i].i],
8377 aeabi_enum_names[out_attr[i].i]);
ee065d83
PB
8378 }
8379 }
8380 break;
8381 case Tag_ABI_VFP_args:
8382 /* Aready done. */
8383 break;
8384 case Tag_ABI_WMMX_args:
8385 if (in_attr[i].i != out_attr[i].i)
8386 {
8387 _bfd_error_handler
8388 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
8389 ibfd, obfd);
8390 return FALSE;
8391 }
8392 break;
8e79c3df 8393
ee065d83
PB
8394 default: /* All known attributes should be explicitly covered. */
8395 abort ();
8396 }
3cfad14c
JM
8397
8398 if (in_attr[i].type && !out_attr[i].type)
8399 switch (in_attr[i].type)
8400 {
8401 case 1:
8402 if (out_attr[i].i)
8403 out_attr[i].type = 1;
8404 break;
8405
8406 case 2:
8407 if (out_attr[i].s)
8408 out_attr[i].type = 2;
8409 break;
8410
8411 default:
8412 abort ();
8413 }
ee065d83
PB
8414 }
8415
104d59d1
JM
8416 /* Merge Tag_compatibility attributes and any common GNU ones. */
8417 _bfd_elf_merge_object_attributes (ibfd, obfd);
ee065d83 8418
104d59d1
JM
8419 /* Check for any attributes not known on ARM. */
8420 in_list = elf_other_obj_attributes_proc (ibfd);
8421 while (in_list && in_list->tag == Tag_compatibility)
8422 in_list = in_list->next;
ee065d83 8423
8e79c3df
CM
8424 out_list = elf_other_obj_attributes_proc (obfd);
8425 while (out_list && out_list->tag == Tag_compatibility)
8426 out_list = out_list->next;
8427
8428 for (; in_list != NULL; )
ee065d83 8429 {
8e79c3df 8430 if (out_list == NULL)
eb111b1f 8431 {
8e79c3df
CM
8432 elf32_arm_copy_eabi_other_attribute_list (ibfd, obfd, in_list);
8433 return TRUE;
8434 }
8435
8436 /* The tags for each list are in numerical order. */
8437 /* If the tags are equal, then merge. */
8438 if (in_list->tag == out_list->tag)
8439 {
8440 switch (in_list->tag)
8441 {
8442 case Tag_VFP_HP_extension:
8443 if (out_list->attr.i == 0)
8444 out_list->attr.i = in_list->attr.i;
8445 break;
8446
8447 case Tag_ABI_FP_16bit_format:
8448 if (in_list->attr.i != 0 && out_list->attr.i != 0)
8449 {
8450 if (in_list->attr.i != out_list->attr.i)
8451 {
8452 _bfd_error_handler
8453 (_("ERROR: fp16 format mismatch between %B and %B"),
8454 ibfd, obfd);
8455 return FALSE;
8456 }
8457 }
8458 if (in_list->attr.i != 0)
8459 out_list->attr.i = in_list->attr.i;
8460 break;
8461
8462 default:
8463 if ((in_list->tag & 127) < 64)
8464 {
8465 _bfd_error_handler
8466 (_("Warning: %B: Unknown EABI object attribute %d"), ibfd, in_list->tag);
8467 break;
8468 }
8469 }
8470 }
8471 else if (in_list->tag < out_list->tag)
8472 {
8473 /* This attribute is in ibfd, but not obfd. Copy to obfd and advance to
8474 next input attribute. */
8475 elf32_arm_copy_one_eabi_other_attribute (ibfd, obfd, in_list);
8476 }
8477 if (in_list->tag <= out_list->tag)
8478 {
8479 in_list = in_list->next;
8480 if (in_list == NULL)
8481 continue;
eb111b1f 8482 }
8e79c3df
CM
8483 while (out_list && out_list->tag < in_list->tag)
8484 out_list = out_list->next;
ee065d83 8485 }
b34976b6 8486 return TRUE;
252b5132
RH
8487}
8488
3a4a14e9
PB
8489
8490/* Return TRUE if the two EABI versions are incompatible. */
8491
8492static bfd_boolean
8493elf32_arm_versions_compatible (unsigned iver, unsigned over)
8494{
8495 /* v4 and v5 are the same spec before and after it was released,
8496 so allow mixing them. */
8497 if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5)
8498 || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4))
8499 return TRUE;
8500
8501 return (iver == over);
8502}
8503
252b5132
RH
8504/* Merge backend specific data from an object file to the output
8505 object file when linking. */
9b485d32 8506
b34976b6 8507static bfd_boolean
57e8b36a 8508elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
252b5132
RH
8509{
8510 flagword out_flags;
8511 flagword in_flags;
b34976b6 8512 bfd_boolean flags_compatible = TRUE;
cf919dfd 8513 asection *sec;
252b5132 8514
9b485d32 8515 /* Check if we have the same endianess. */
82e51918 8516 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
b34976b6 8517 return FALSE;
1fe494a5 8518
0ffa91dd 8519 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
b34976b6 8520 return TRUE;
252b5132 8521
ee065d83
PB
8522 if (!elf32_arm_merge_eabi_attributes (ibfd, obfd))
8523 return FALSE;
8524
252b5132
RH
8525 /* The input BFD must have had its flags initialised. */
8526 /* The following seems bogus to me -- The flags are initialized in
8527 the assembler but I don't think an elf_flags_init field is
9b485d32 8528 written into the object. */
252b5132
RH
8529 /* BFD_ASSERT (elf_flags_init (ibfd)); */
8530
8531 in_flags = elf_elfheader (ibfd)->e_flags;
8532 out_flags = elf_elfheader (obfd)->e_flags;
8533
23684067
PB
8534 /* In theory there is no reason why we couldn't handle this. However
8535 in practice it isn't even close to working and there is no real
8536 reason to want it. */
8537 if (EF_ARM_EABI_VERSION (in_flags) >= EF_ARM_EABI_VER4
c13bb2ea 8538 && !(ibfd->flags & DYNAMIC)
23684067
PB
8539 && (in_flags & EF_ARM_BE8))
8540 {
8029a119 8541 _bfd_error_handler (_("ERROR: %B is already in final BE8 format"),
23684067
PB
8542 ibfd);
8543 return FALSE;
8544 }
8545
252b5132
RH
8546 if (!elf_flags_init (obfd))
8547 {
fe077fa6
NC
8548 /* If the input is the default architecture and had the default
8549 flags then do not bother setting the flags for the output
8550 architecture, instead allow future merges to do this. If no
8551 future merges ever set these flags then they will retain their
8552 uninitialised values, which surprise surprise, correspond
252b5132 8553 to the default values. */
fe077fa6
NC
8554 if (bfd_get_arch_info (ibfd)->the_default
8555 && elf_elfheader (ibfd)->e_flags == 0)
b34976b6 8556 return TRUE;
252b5132 8557
b34976b6 8558 elf_flags_init (obfd) = TRUE;
252b5132
RH
8559 elf_elfheader (obfd)->e_flags = in_flags;
8560
8561 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
8562 && bfd_get_arch_info (obfd)->the_default)
8563 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
8564
b34976b6 8565 return TRUE;
252b5132
RH
8566 }
8567
5a6c6817
NC
8568 /* Determine what should happen if the input ARM architecture
8569 does not match the output ARM architecture. */
8570 if (! bfd_arm_merge_machines (ibfd, obfd))
8571 return FALSE;
e16bb312 8572
1006ba19 8573 /* Identical flags must be compatible. */
252b5132 8574 if (in_flags == out_flags)
b34976b6 8575 return TRUE;
252b5132 8576
35a0f415
DJ
8577 /* Check to see if the input BFD actually contains any sections. If
8578 not, its flags may not have been initialised either, but it
8e3de13a 8579 cannot actually cause any incompatiblity. Do not short-circuit
35a0f415 8580 dynamic objects; their section list may be emptied by
d1f161ea 8581 elf_link_add_object_symbols.
35a0f415 8582
d1f161ea
NC
8583 Also check to see if there are no code sections in the input.
8584 In this case there is no need to check for code specific flags.
8585 XXX - do we need to worry about floating-point format compatability
8586 in data sections ? */
35a0f415 8587 if (!(ibfd->flags & DYNAMIC))
cf919dfd 8588 {
35a0f415 8589 bfd_boolean null_input_bfd = TRUE;
d1f161ea 8590 bfd_boolean only_data_sections = TRUE;
35a0f415
DJ
8591
8592 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
cf919dfd 8593 {
35a0f415
DJ
8594 /* Ignore synthetic glue sections. */
8595 if (strcmp (sec->name, ".glue_7")
8596 && strcmp (sec->name, ".glue_7t"))
8597 {
d1f161ea
NC
8598 if ((bfd_get_section_flags (ibfd, sec)
8599 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
8600 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
8601 only_data_sections = FALSE;
8602
35a0f415
DJ
8603 null_input_bfd = FALSE;
8604 break;
8605 }
cf919dfd 8606 }
d1f161ea
NC
8607
8608 if (null_input_bfd || only_data_sections)
35a0f415 8609 return TRUE;
cf919dfd 8610 }
cf919dfd 8611
252b5132 8612 /* Complain about various flag mismatches. */
3a4a14e9
PB
8613 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags),
8614 EF_ARM_EABI_VERSION (out_flags)))
fc830a83 8615 {
d003868e 8616 _bfd_error_handler
3656d5e3 8617 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
d003868e
AM
8618 ibfd, obfd,
8619 (in_flags & EF_ARM_EABIMASK) >> 24,
8620 (out_flags & EF_ARM_EABIMASK) >> 24);
b34976b6 8621 return FALSE;
fc830a83 8622 }
252b5132 8623
1006ba19 8624 /* Not sure what needs to be checked for EABI versions >= 1. */
00a97672
RS
8625 /* VxWorks libraries do not use these flags. */
8626 if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed
8627 && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed
8628 && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
1006ba19 8629 {
fd2ec330 8630 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
1006ba19 8631 {
d003868e
AM
8632 _bfd_error_handler
8633 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
8634 ibfd, obfd,
8635 in_flags & EF_ARM_APCS_26 ? 26 : 32,
8636 out_flags & EF_ARM_APCS_26 ? 26 : 32);
b34976b6 8637 flags_compatible = FALSE;
1006ba19 8638 }
252b5132 8639
fd2ec330 8640 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
1006ba19 8641 {
5eefb65f 8642 if (in_flags & EF_ARM_APCS_FLOAT)
d003868e
AM
8643 _bfd_error_handler
8644 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
8645 ibfd, obfd);
5eefb65f 8646 else
d003868e
AM
8647 _bfd_error_handler
8648 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
8649 ibfd, obfd);
63b0f745 8650
b34976b6 8651 flags_compatible = FALSE;
1006ba19 8652 }
252b5132 8653
96a846ea 8654 if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
1006ba19 8655 {
96a846ea 8656 if (in_flags & EF_ARM_VFP_FLOAT)
d003868e
AM
8657 _bfd_error_handler
8658 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
8659 ibfd, obfd);
5eefb65f 8660 else
d003868e
AM
8661 _bfd_error_handler
8662 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
8663 ibfd, obfd);
fde78edd
NC
8664
8665 flags_compatible = FALSE;
8666 }
8667
8668 if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
8669 {
8670 if (in_flags & EF_ARM_MAVERICK_FLOAT)
d003868e
AM
8671 _bfd_error_handler
8672 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
8673 ibfd, obfd);
fde78edd 8674 else
d003868e
AM
8675 _bfd_error_handler
8676 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
8677 ibfd, obfd);
63b0f745 8678
b34976b6 8679 flags_compatible = FALSE;
1006ba19 8680 }
96a846ea
RE
8681
8682#ifdef EF_ARM_SOFT_FLOAT
8683 if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
8684 {
8685 /* We can allow interworking between code that is VFP format
8686 layout, and uses either soft float or integer regs for
8687 passing floating point arguments and results. We already
8688 know that the APCS_FLOAT flags match; similarly for VFP
8689 flags. */
8690 if ((in_flags & EF_ARM_APCS_FLOAT) != 0
8691 || (in_flags & EF_ARM_VFP_FLOAT) == 0)
8692 {
8693 if (in_flags & EF_ARM_SOFT_FLOAT)
d003868e
AM
8694 _bfd_error_handler
8695 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
8696 ibfd, obfd);
96a846ea 8697 else
d003868e
AM
8698 _bfd_error_handler
8699 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
8700 ibfd, obfd);
96a846ea 8701
b34976b6 8702 flags_compatible = FALSE;
96a846ea
RE
8703 }
8704 }
ee43f35e 8705#endif
252b5132 8706
1006ba19 8707 /* Interworking mismatch is only a warning. */
fd2ec330 8708 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
8f615d07 8709 {
e3c8793a
NC
8710 if (in_flags & EF_ARM_INTERWORK)
8711 {
d003868e
AM
8712 _bfd_error_handler
8713 (_("Warning: %B supports interworking, whereas %B does not"),
8714 ibfd, obfd);
e3c8793a
NC
8715 }
8716 else
8717 {
d003868e
AM
8718 _bfd_error_handler
8719 (_("Warning: %B does not support interworking, whereas %B does"),
8720 ibfd, obfd);
e3c8793a 8721 }
8f615d07 8722 }
252b5132 8723 }
63b0f745 8724
1006ba19 8725 return flags_compatible;
252b5132
RH
8726}
8727
9b485d32
NC
8728/* Display the flags field. */
8729
b34976b6 8730static bfd_boolean
57e8b36a 8731elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
252b5132 8732{
fc830a83
NC
8733 FILE * file = (FILE *) ptr;
8734 unsigned long flags;
252b5132
RH
8735
8736 BFD_ASSERT (abfd != NULL && ptr != NULL);
8737
8738 /* Print normal ELF private data. */
8739 _bfd_elf_print_private_bfd_data (abfd, ptr);
8740
fc830a83 8741 flags = elf_elfheader (abfd)->e_flags;
9b485d32
NC
8742 /* Ignore init flag - it may not be set, despite the flags field
8743 containing valid data. */
252b5132
RH
8744
8745 /* xgettext:c-format */
9b485d32 8746 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
252b5132 8747
fc830a83
NC
8748 switch (EF_ARM_EABI_VERSION (flags))
8749 {
8750 case EF_ARM_EABI_UNKNOWN:
4cc11e76 8751 /* The following flag bits are GNU extensions and not part of the
fc830a83
NC
8752 official ARM ELF extended ABI. Hence they are only decoded if
8753 the EABI version is not set. */
fd2ec330 8754 if (flags & EF_ARM_INTERWORK)
9b485d32 8755 fprintf (file, _(" [interworking enabled]"));
9a5aca8c 8756
fd2ec330 8757 if (flags & EF_ARM_APCS_26)
6c571f00 8758 fprintf (file, " [APCS-26]");
fc830a83 8759 else
6c571f00 8760 fprintf (file, " [APCS-32]");
9a5aca8c 8761
96a846ea
RE
8762 if (flags & EF_ARM_VFP_FLOAT)
8763 fprintf (file, _(" [VFP float format]"));
fde78edd
NC
8764 else if (flags & EF_ARM_MAVERICK_FLOAT)
8765 fprintf (file, _(" [Maverick float format]"));
96a846ea
RE
8766 else
8767 fprintf (file, _(" [FPA float format]"));
8768
fd2ec330 8769 if (flags & EF_ARM_APCS_FLOAT)
9b485d32 8770 fprintf (file, _(" [floats passed in float registers]"));
9a5aca8c 8771
fd2ec330 8772 if (flags & EF_ARM_PIC)
9b485d32 8773 fprintf (file, _(" [position independent]"));
fc830a83 8774
fd2ec330 8775 if (flags & EF_ARM_NEW_ABI)
9b485d32 8776 fprintf (file, _(" [new ABI]"));
9a5aca8c 8777
fd2ec330 8778 if (flags & EF_ARM_OLD_ABI)
9b485d32 8779 fprintf (file, _(" [old ABI]"));
9a5aca8c 8780
fd2ec330 8781 if (flags & EF_ARM_SOFT_FLOAT)
9b485d32 8782 fprintf (file, _(" [software FP]"));
9a5aca8c 8783
96a846ea
RE
8784 flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
8785 | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
fde78edd
NC
8786 | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
8787 | EF_ARM_MAVERICK_FLOAT);
fc830a83 8788 break;
9a5aca8c 8789
fc830a83 8790 case EF_ARM_EABI_VER1:
9b485d32 8791 fprintf (file, _(" [Version1 EABI]"));
9a5aca8c 8792
fc830a83 8793 if (flags & EF_ARM_SYMSARESORTED)
9b485d32 8794 fprintf (file, _(" [sorted symbol table]"));
fc830a83 8795 else
9b485d32 8796 fprintf (file, _(" [unsorted symbol table]"));
9a5aca8c 8797
fc830a83
NC
8798 flags &= ~ EF_ARM_SYMSARESORTED;
8799 break;
9a5aca8c 8800
fd2ec330
PB
8801 case EF_ARM_EABI_VER2:
8802 fprintf (file, _(" [Version2 EABI]"));
8803
8804 if (flags & EF_ARM_SYMSARESORTED)
8805 fprintf (file, _(" [sorted symbol table]"));
8806 else
8807 fprintf (file, _(" [unsorted symbol table]"));
8808
8809 if (flags & EF_ARM_DYNSYMSUSESEGIDX)
8810 fprintf (file, _(" [dynamic symbols use segment index]"));
8811
8812 if (flags & EF_ARM_MAPSYMSFIRST)
8813 fprintf (file, _(" [mapping symbols precede others]"));
8814
99e4ae17 8815 flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
fd2ec330
PB
8816 | EF_ARM_MAPSYMSFIRST);
8817 break;
8818
d507cf36
PB
8819 case EF_ARM_EABI_VER3:
8820 fprintf (file, _(" [Version3 EABI]"));
8cb51566
PB
8821 break;
8822
8823 case EF_ARM_EABI_VER4:
8824 fprintf (file, _(" [Version4 EABI]"));
3a4a14e9 8825 goto eabi;
d507cf36 8826
3a4a14e9
PB
8827 case EF_ARM_EABI_VER5:
8828 fprintf (file, _(" [Version5 EABI]"));
8829 eabi:
d507cf36
PB
8830 if (flags & EF_ARM_BE8)
8831 fprintf (file, _(" [BE8]"));
8832
8833 if (flags & EF_ARM_LE8)
8834 fprintf (file, _(" [LE8]"));
8835
8836 flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
8837 break;
8838
fc830a83 8839 default:
9b485d32 8840 fprintf (file, _(" <EABI version unrecognised>"));
fc830a83
NC
8841 break;
8842 }
252b5132 8843
fc830a83 8844 flags &= ~ EF_ARM_EABIMASK;
252b5132 8845
fc830a83 8846 if (flags & EF_ARM_RELEXEC)
9b485d32 8847 fprintf (file, _(" [relocatable executable]"));
252b5132 8848
fc830a83 8849 if (flags & EF_ARM_HASENTRY)
9b485d32 8850 fprintf (file, _(" [has entry point]"));
252b5132 8851
fc830a83
NC
8852 flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
8853
8854 if (flags)
9b485d32 8855 fprintf (file, _("<Unrecognised flag bits set>"));
9a5aca8c 8856
252b5132
RH
8857 fputc ('\n', file);
8858
b34976b6 8859 return TRUE;
252b5132
RH
8860}
8861
8862static int
57e8b36a 8863elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
252b5132 8864{
2f0ca46a
NC
8865 switch (ELF_ST_TYPE (elf_sym->st_info))
8866 {
8867 case STT_ARM_TFUNC:
8868 return ELF_ST_TYPE (elf_sym->st_info);
ce855c42 8869
2f0ca46a
NC
8870 case STT_ARM_16BIT:
8871 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
8872 This allows us to distinguish between data used by Thumb instructions
8873 and non-data (which is probably code) inside Thumb regions of an
8874 executable. */
1a0eb693 8875 if (type != STT_OBJECT && type != STT_TLS)
2f0ca46a
NC
8876 return ELF_ST_TYPE (elf_sym->st_info);
8877 break;
9a5aca8c 8878
ce855c42
NC
8879 default:
8880 break;
2f0ca46a
NC
8881 }
8882
8883 return type;
252b5132 8884}
f21f3fe0 8885
252b5132 8886static asection *
07adf181
AM
8887elf32_arm_gc_mark_hook (asection *sec,
8888 struct bfd_link_info *info,
8889 Elf_Internal_Rela *rel,
8890 struct elf_link_hash_entry *h,
8891 Elf_Internal_Sym *sym)
252b5132
RH
8892{
8893 if (h != NULL)
07adf181 8894 switch (ELF32_R_TYPE (rel->r_info))
252b5132
RH
8895 {
8896 case R_ARM_GNU_VTINHERIT:
8897 case R_ARM_GNU_VTENTRY:
07adf181
AM
8898 return NULL;
8899 }
9ad5cbcf 8900
07adf181 8901 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH
8902}
8903
780a67af
NC
8904/* Update the got entry reference counts for the section being removed. */
8905
b34976b6 8906static bfd_boolean
ba93b8ac
DJ
8907elf32_arm_gc_sweep_hook (bfd * abfd,
8908 struct bfd_link_info * info,
8909 asection * sec,
8910 const Elf_Internal_Rela * relocs)
252b5132 8911{
5e681ec4
PB
8912 Elf_Internal_Shdr *symtab_hdr;
8913 struct elf_link_hash_entry **sym_hashes;
8914 bfd_signed_vma *local_got_refcounts;
8915 const Elf_Internal_Rela *rel, *relend;
eb043451
PB
8916 struct elf32_arm_link_hash_table * globals;
8917
7dda2462
TG
8918 if (info->relocatable)
8919 return TRUE;
8920
eb043451 8921 globals = elf32_arm_hash_table (info);
5e681ec4
PB
8922
8923 elf_section_data (sec)->local_dynrel = NULL;
8924
0ffa91dd 8925 symtab_hdr = & elf_symtab_hdr (abfd);
5e681ec4
PB
8926 sym_hashes = elf_sym_hashes (abfd);
8927 local_got_refcounts = elf_local_got_refcounts (abfd);
8928
906e58ca 8929 check_use_blx (globals);
bd97cb95 8930
5e681ec4
PB
8931 relend = relocs + sec->reloc_count;
8932 for (rel = relocs; rel < relend; rel++)
eb043451 8933 {
3eb128b2
AM
8934 unsigned long r_symndx;
8935 struct elf_link_hash_entry *h = NULL;
eb043451 8936 int r_type;
5e681ec4 8937
3eb128b2
AM
8938 r_symndx = ELF32_R_SYM (rel->r_info);
8939 if (r_symndx >= symtab_hdr->sh_info)
8940 {
8941 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
8942 while (h->root.type == bfd_link_hash_indirect
8943 || h->root.type == bfd_link_hash_warning)
8944 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8945 }
8946
eb043451 8947 r_type = ELF32_R_TYPE (rel->r_info);
eb043451 8948 r_type = arm_real_reloc_type (globals, r_type);
eb043451
PB
8949 switch (r_type)
8950 {
8951 case R_ARM_GOT32:
eb043451 8952 case R_ARM_GOT_PREL:
ba93b8ac
DJ
8953 case R_ARM_TLS_GD32:
8954 case R_ARM_TLS_IE32:
3eb128b2 8955 if (h != NULL)
eb043451 8956 {
eb043451
PB
8957 if (h->got.refcount > 0)
8958 h->got.refcount -= 1;
8959 }
8960 else if (local_got_refcounts != NULL)
8961 {
8962 if (local_got_refcounts[r_symndx] > 0)
8963 local_got_refcounts[r_symndx] -= 1;
8964 }
8965 break;
8966
ba93b8ac
DJ
8967 case R_ARM_TLS_LDM32:
8968 elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1;
8969 break;
8970
eb043451 8971 case R_ARM_ABS32:
bb224fc3 8972 case R_ARM_ABS32_NOI:
eb043451 8973 case R_ARM_REL32:
bb224fc3 8974 case R_ARM_REL32_NOI:
eb043451
PB
8975 case R_ARM_PC24:
8976 case R_ARM_PLT32:
5b5bb741
PB
8977 case R_ARM_CALL:
8978 case R_ARM_JUMP24:
eb043451 8979 case R_ARM_PREL31:
c19d1205 8980 case R_ARM_THM_CALL:
bd97cb95
DJ
8981 case R_ARM_THM_JUMP24:
8982 case R_ARM_THM_JUMP19:
b6895b4f
PB
8983 case R_ARM_MOVW_ABS_NC:
8984 case R_ARM_MOVT_ABS:
8985 case R_ARM_MOVW_PREL_NC:
8986 case R_ARM_MOVT_PREL:
8987 case R_ARM_THM_MOVW_ABS_NC:
8988 case R_ARM_THM_MOVT_ABS:
8989 case R_ARM_THM_MOVW_PREL_NC:
8990 case R_ARM_THM_MOVT_PREL:
b7693d02
DJ
8991 /* Should the interworking branches be here also? */
8992
3eb128b2 8993 if (h != NULL)
eb043451
PB
8994 {
8995 struct elf32_arm_link_hash_entry *eh;
8996 struct elf32_arm_relocs_copied **pp;
8997 struct elf32_arm_relocs_copied *p;
5e681ec4 8998
b7693d02 8999 eh = (struct elf32_arm_link_hash_entry *) h;
5e681ec4 9000
eb043451 9001 if (h->plt.refcount > 0)
b7693d02
DJ
9002 {
9003 h->plt.refcount -= 1;
bd97cb95
DJ
9004 if (r_type == R_ARM_THM_CALL)
9005 eh->plt_maybe_thumb_refcount--;
9006
9007 if (r_type == R_ARM_THM_JUMP24
9008 || r_type == R_ARM_THM_JUMP19)
b7693d02
DJ
9009 eh->plt_thumb_refcount--;
9010 }
5e681ec4 9011
eb043451 9012 if (r_type == R_ARM_ABS32
bb224fc3
MS
9013 || r_type == R_ARM_REL32
9014 || r_type == R_ARM_ABS32_NOI
9015 || r_type == R_ARM_REL32_NOI)
eb043451 9016 {
eb043451
PB
9017 for (pp = &eh->relocs_copied; (p = *pp) != NULL;
9018 pp = &p->next)
9019 if (p->section == sec)
9020 {
9021 p->count -= 1;
bb224fc3
MS
9022 if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32
9023 || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI)
ba93b8ac 9024 p->pc_count -= 1;
eb043451
PB
9025 if (p->count == 0)
9026 *pp = p->next;
9027 break;
9028 }
9029 }
9030 }
9031 break;
5e681ec4 9032
eb043451
PB
9033 default:
9034 break;
9035 }
9036 }
5e681ec4 9037
b34976b6 9038 return TRUE;
252b5132
RH
9039}
9040
780a67af
NC
9041/* Look through the relocs for a section during the first phase. */
9042
b34976b6 9043static bfd_boolean
57e8b36a
NC
9044elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
9045 asection *sec, const Elf_Internal_Rela *relocs)
252b5132 9046{
b34976b6
AM
9047 Elf_Internal_Shdr *symtab_hdr;
9048 struct elf_link_hash_entry **sym_hashes;
b34976b6
AM
9049 const Elf_Internal_Rela *rel;
9050 const Elf_Internal_Rela *rel_end;
9051 bfd *dynobj;
5e681ec4 9052 asection *sreloc;
b34976b6 9053 bfd_vma *local_got_offsets;
5e681ec4 9054 struct elf32_arm_link_hash_table *htab;
39623e12 9055 bfd_boolean needs_plt;
9a5aca8c 9056
1049f94e 9057 if (info->relocatable)
b34976b6 9058 return TRUE;
9a5aca8c 9059
0ffa91dd
NC
9060 BFD_ASSERT (is_arm_elf (abfd));
9061
5e681ec4
PB
9062 htab = elf32_arm_hash_table (info);
9063 sreloc = NULL;
9a5aca8c 9064
67687978
PB
9065 /* Create dynamic sections for relocatable executables so that we can
9066 copy relocations. */
9067 if (htab->root.is_relocatable_executable
9068 && ! htab->root.dynamic_sections_created)
9069 {
9070 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
9071 return FALSE;
9072 }
9073
252b5132
RH
9074 dynobj = elf_hash_table (info)->dynobj;
9075 local_got_offsets = elf_local_got_offsets (abfd);
f21f3fe0 9076
0ffa91dd 9077 symtab_hdr = & elf_symtab_hdr (abfd);
252b5132 9078 sym_hashes = elf_sym_hashes (abfd);
9b485d32 9079
252b5132
RH
9080 rel_end = relocs + sec->reloc_count;
9081 for (rel = relocs; rel < rel_end; rel++)
9082 {
9083 struct elf_link_hash_entry *h;
b7693d02 9084 struct elf32_arm_link_hash_entry *eh;
252b5132 9085 unsigned long r_symndx;
eb043451 9086 int r_type;
9a5aca8c 9087
252b5132 9088 r_symndx = ELF32_R_SYM (rel->r_info);
eb043451 9089 r_type = ELF32_R_TYPE (rel->r_info);
eb043451 9090 r_type = arm_real_reloc_type (htab, r_type);
ba93b8ac
DJ
9091
9092 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
9093 {
9094 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
9095 r_symndx);
9096 return FALSE;
9097 }
9098
252b5132
RH
9099 if (r_symndx < symtab_hdr->sh_info)
9100 h = NULL;
9101 else
973a3492
L
9102 {
9103 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
9104 while (h->root.type == bfd_link_hash_indirect
9105 || h->root.type == bfd_link_hash_warning)
9106 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9107 }
9a5aca8c 9108
b7693d02
DJ
9109 eh = (struct elf32_arm_link_hash_entry *) h;
9110
eb043451 9111 switch (r_type)
252b5132 9112 {
5e681ec4 9113 case R_ARM_GOT32:
eb043451 9114 case R_ARM_GOT_PREL:
ba93b8ac
DJ
9115 case R_ARM_TLS_GD32:
9116 case R_ARM_TLS_IE32:
5e681ec4 9117 /* This symbol requires a global offset table entry. */
ba93b8ac
DJ
9118 {
9119 int tls_type, old_tls_type;
5e681ec4 9120
ba93b8ac
DJ
9121 switch (r_type)
9122 {
9123 case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
9124 case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
9125 default: tls_type = GOT_NORMAL; break;
9126 }
252b5132 9127
ba93b8ac
DJ
9128 if (h != NULL)
9129 {
9130 h->got.refcount++;
9131 old_tls_type = elf32_arm_hash_entry (h)->tls_type;
9132 }
9133 else
9134 {
9135 bfd_signed_vma *local_got_refcounts;
9136
9137 /* This is a global offset table entry for a local symbol. */
9138 local_got_refcounts = elf_local_got_refcounts (abfd);
9139 if (local_got_refcounts == NULL)
9140 {
9141 bfd_size_type size;
906e58ca 9142
ba93b8ac 9143 size = symtab_hdr->sh_info;
906e58ca 9144 size *= (sizeof (bfd_signed_vma) + sizeof (char));
ba93b8ac
DJ
9145 local_got_refcounts = bfd_zalloc (abfd, size);
9146 if (local_got_refcounts == NULL)
9147 return FALSE;
9148 elf_local_got_refcounts (abfd) = local_got_refcounts;
9149 elf32_arm_local_got_tls_type (abfd)
9150 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
9151 }
9152 local_got_refcounts[r_symndx] += 1;
9153 old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
9154 }
9155
9156 /* We will already have issued an error message if there is a
9157 TLS / non-TLS mismatch, based on the symbol type. We don't
9158 support any linker relaxations. So just combine any TLS
9159 types needed. */
9160 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
9161 && tls_type != GOT_NORMAL)
9162 tls_type |= old_tls_type;
9163
9164 if (old_tls_type != tls_type)
9165 {
9166 if (h != NULL)
9167 elf32_arm_hash_entry (h)->tls_type = tls_type;
9168 else
9169 elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
9170 }
9171 }
8029a119 9172 /* Fall through. */
ba93b8ac
DJ
9173
9174 case R_ARM_TLS_LDM32:
9175 if (r_type == R_ARM_TLS_LDM32)
9176 htab->tls_ldm_got.refcount++;
8029a119 9177 /* Fall through. */
252b5132 9178
c19d1205 9179 case R_ARM_GOTOFF32:
5e681ec4
PB
9180 case R_ARM_GOTPC:
9181 if (htab->sgot == NULL)
9182 {
9183 if (htab->root.dynobj == NULL)
9184 htab->root.dynobj = abfd;
9185 if (!create_got_section (htab->root.dynobj, info))
9186 return FALSE;
9187 }
252b5132
RH
9188 break;
9189
00a97672
RS
9190 case R_ARM_ABS12:
9191 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
9192 ldr __GOTT_INDEX__ offsets. */
9193 if (!htab->vxworks_p)
9194 break;
8029a119 9195 /* Fall through. */
00a97672 9196
252b5132 9197 case R_ARM_PC24:
7359ea65 9198 case R_ARM_PLT32:
5b5bb741
PB
9199 case R_ARM_CALL:
9200 case R_ARM_JUMP24:
eb043451 9201 case R_ARM_PREL31:
c19d1205 9202 case R_ARM_THM_CALL:
bd97cb95
DJ
9203 case R_ARM_THM_JUMP24:
9204 case R_ARM_THM_JUMP19:
39623e12
PB
9205 needs_plt = 1;
9206 goto normal_reloc;
9207
9208 case R_ARM_ABS32:
9209 case R_ARM_ABS32_NOI:
9210 case R_ARM_REL32:
9211 case R_ARM_REL32_NOI:
b6895b4f
PB
9212 case R_ARM_MOVW_ABS_NC:
9213 case R_ARM_MOVT_ABS:
9214 case R_ARM_MOVW_PREL_NC:
9215 case R_ARM_MOVT_PREL:
9216 case R_ARM_THM_MOVW_ABS_NC:
9217 case R_ARM_THM_MOVT_ABS:
9218 case R_ARM_THM_MOVW_PREL_NC:
9219 case R_ARM_THM_MOVT_PREL:
39623e12
PB
9220 needs_plt = 0;
9221 normal_reloc:
9222
b7693d02 9223 /* Should the interworking branches be listed here? */
7359ea65 9224 if (h != NULL)
5e681ec4
PB
9225 {
9226 /* If this reloc is in a read-only section, we might
9227 need a copy reloc. We can't check reliably at this
9228 stage whether the section is read-only, as input
9229 sections have not yet been mapped to output sections.
9230 Tentatively set the flag for now, and correct in
9231 adjust_dynamic_symbol. */
7359ea65 9232 if (!info->shared)
f5385ebf 9233 h->non_got_ref = 1;
7359ea65 9234
5e681ec4 9235 /* We may need a .plt entry if the function this reloc
c84cd8ee
DJ
9236 refers to is in a different object. We can't tell for
9237 sure yet, because something later might force the
9238 symbol local. */
39623e12 9239 if (needs_plt)
f5385ebf 9240 h->needs_plt = 1;
4f199be3
DJ
9241
9242 /* If we create a PLT entry, this relocation will reference
9243 it, even if it's an ABS32 relocation. */
9244 h->plt.refcount += 1;
b7693d02 9245
bd97cb95
DJ
9246 /* It's too early to use htab->use_blx here, so we have to
9247 record possible blx references separately from
9248 relocs that definitely need a thumb stub. */
9249
c19d1205 9250 if (r_type == R_ARM_THM_CALL)
bd97cb95
DJ
9251 eh->plt_maybe_thumb_refcount += 1;
9252
9253 if (r_type == R_ARM_THM_JUMP24
9254 || r_type == R_ARM_THM_JUMP19)
b7693d02 9255 eh->plt_thumb_refcount += 1;
5e681ec4
PB
9256 }
9257
67687978
PB
9258 /* If we are creating a shared library or relocatable executable,
9259 and this is a reloc against a global symbol, or a non PC
9260 relative reloc against a local symbol, then we need to copy
9261 the reloc into the shared library. However, if we are linking
9262 with -Bsymbolic, we do not need to copy a reloc against a
252b5132
RH
9263 global symbol which is defined in an object we are
9264 including in the link (i.e., DEF_REGULAR is set). At
9265 this point we have not seen all the input files, so it is
9266 possible that DEF_REGULAR is not set now but will be set
9267 later (it is never cleared). We account for that
9268 possibility below by storing information in the
5e681ec4 9269 relocs_copied field of the hash table entry. */
67687978 9270 if ((info->shared || htab->root.is_relocatable_executable)
5e681ec4 9271 && (sec->flags & SEC_ALLOC) != 0
bb224fc3 9272 && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI)
71a976dd
DJ
9273 || (h != NULL && ! h->needs_plt
9274 && (! info->symbolic || ! h->def_regular))))
252b5132 9275 {
5e681ec4
PB
9276 struct elf32_arm_relocs_copied *p, **head;
9277
252b5132
RH
9278 /* When creating a shared object, we must copy these
9279 reloc types into the output file. We create a reloc
9280 section in dynobj and make room for this reloc. */
9281 if (sreloc == NULL)
9282 {
9283 const char * name;
9284
9285 name = (bfd_elf_string_from_elf_section
9286 (abfd,
9287 elf_elfheader (abfd)->e_shstrndx,
9288 elf_section_data (sec)->rel_hdr.sh_name));
9289 if (name == NULL)
b34976b6 9290 return FALSE;
252b5132 9291
00a97672 9292 BFD_ASSERT (reloc_section_p (htab, name, sec));
252b5132
RH
9293
9294 sreloc = bfd_get_section_by_name (dynobj, name);
9295 if (sreloc == NULL)
9296 {
9297 flagword flags;
9298
252b5132
RH
9299 flags = (SEC_HAS_CONTENTS | SEC_READONLY
9300 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
e5a52504
MM
9301 if ((sec->flags & SEC_ALLOC) != 0
9302 /* BPABI objects never have dynamic
9303 relocations mapped. */
9304 && !htab->symbian_p)
252b5132 9305 flags |= SEC_ALLOC | SEC_LOAD;
3496cb2a
L
9306 sreloc = bfd_make_section_with_flags (dynobj,
9307 name,
9308 flags);
252b5132 9309 if (sreloc == NULL
252b5132 9310 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
b34976b6 9311 return FALSE;
252b5132 9312 }
5e681ec4
PB
9313
9314 elf_section_data (sec)->sreloc = sreloc;
252b5132
RH
9315 }
9316
5e681ec4
PB
9317 /* If this is a global symbol, we count the number of
9318 relocations we need for this symbol. */
9319 if (h != NULL)
252b5132 9320 {
5e681ec4
PB
9321 head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied;
9322 }
9323 else
9324 {
9325 /* Track dynamic relocs needed for local syms too.
9326 We really need local syms available to do this
9327 easily. Oh well. */
57e8b36a 9328
5e681ec4 9329 asection *s;
6edfbbad
DJ
9330 void *vpp;
9331
5e681ec4
PB
9332 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
9333 sec, r_symndx);
9334 if (s == NULL)
9335 return FALSE;
57e8b36a 9336
6edfbbad
DJ
9337 vpp = &elf_section_data (s)->local_dynrel;
9338 head = (struct elf32_arm_relocs_copied **) vpp;
5e681ec4 9339 }
57e8b36a 9340
5e681ec4
PB
9341 p = *head;
9342 if (p == NULL || p->section != sec)
9343 {
9344 bfd_size_type amt = sizeof *p;
57e8b36a 9345
5e681ec4 9346 p = bfd_alloc (htab->root.dynobj, amt);
252b5132 9347 if (p == NULL)
5e681ec4
PB
9348 return FALSE;
9349 p->next = *head;
9350 *head = p;
9351 p->section = sec;
9352 p->count = 0;
ba93b8ac 9353 p->pc_count = 0;
252b5132 9354 }
57e8b36a 9355
bb224fc3 9356 if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI)
ba93b8ac 9357 p->pc_count += 1;
71a976dd 9358 p->count += 1;
252b5132
RH
9359 }
9360 break;
9361
9362 /* This relocation describes the C++ object vtable hierarchy.
9363 Reconstruct it for later use during GC. */
9364 case R_ARM_GNU_VTINHERIT:
c152c796 9365 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 9366 return FALSE;
252b5132 9367 break;
9a5aca8c 9368
252b5132
RH
9369 /* This relocation describes which C++ vtable entries are actually
9370 used. Record for later use during GC. */
9371 case R_ARM_GNU_VTENTRY:
d17e0c6e
JB
9372 BFD_ASSERT (h != NULL);
9373 if (h != NULL
9374 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
b34976b6 9375 return FALSE;
252b5132
RH
9376 break;
9377 }
9378 }
f21f3fe0 9379
b34976b6 9380 return TRUE;
252b5132
RH
9381}
9382
6a5bb875
PB
9383/* Unwinding tables are not referenced directly. This pass marks them as
9384 required if the corresponding code section is marked. */
9385
9386static bfd_boolean
906e58ca
NC
9387elf32_arm_gc_mark_extra_sections (struct bfd_link_info *info,
9388 elf_gc_mark_hook_fn gc_mark_hook)
6a5bb875
PB
9389{
9390 bfd *sub;
9391 Elf_Internal_Shdr **elf_shdrp;
9392 bfd_boolean again;
9393
9394 /* Marking EH data may cause additional code sections to be marked,
9395 requiring multiple passes. */
9396 again = TRUE;
9397 while (again)
9398 {
9399 again = FALSE;
9400 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
9401 {
9402 asection *o;
9403
0ffa91dd 9404 if (! is_arm_elf (sub))
6a5bb875
PB
9405 continue;
9406
9407 elf_shdrp = elf_elfsections (sub);
9408 for (o = sub->sections; o != NULL; o = o->next)
9409 {
9410 Elf_Internal_Shdr *hdr;
0ffa91dd 9411
6a5bb875 9412 hdr = &elf_section_data (o)->this_hdr;
4fbb74a6
AM
9413 if (hdr->sh_type == SHT_ARM_EXIDX
9414 && hdr->sh_link
9415 && hdr->sh_link < elf_numsections (sub)
6a5bb875
PB
9416 && !o->gc_mark
9417 && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
9418 {
9419 again = TRUE;
9420 if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
9421 return FALSE;
9422 }
9423 }
9424 }
9425 }
9426
9427 return TRUE;
9428}
9429
3c9458e9
NC
9430/* Treat mapping symbols as special target symbols. */
9431
9432static bfd_boolean
9433elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
9434{
b0796911
PB
9435 return bfd_is_arm_special_symbol_name (sym->name,
9436 BFD_ARM_SPECIAL_SYM_TYPE_ANY);
3c9458e9
NC
9437}
9438
0367ecfb
NC
9439/* This is a copy of elf_find_function() from elf.c except that
9440 ARM mapping symbols are ignored when looking for function names
9441 and STT_ARM_TFUNC is considered to a function type. */
252b5132 9442
0367ecfb
NC
9443static bfd_boolean
9444arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
9445 asection * section,
9446 asymbol ** symbols,
9447 bfd_vma offset,
9448 const char ** filename_ptr,
9449 const char ** functionname_ptr)
9450{
9451 const char * filename = NULL;
9452 asymbol * func = NULL;
9453 bfd_vma low_func = 0;
9454 asymbol ** p;
252b5132
RH
9455
9456 for (p = symbols; *p != NULL; p++)
9457 {
9458 elf_symbol_type *q;
9459
9460 q = (elf_symbol_type *) *p;
9461
252b5132
RH
9462 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
9463 {
9464 default:
9465 break;
9466 case STT_FILE:
9467 filename = bfd_asymbol_name (&q->symbol);
9468 break;
252b5132
RH
9469 case STT_FUNC:
9470 case STT_ARM_TFUNC:
9d2da7ca 9471 case STT_NOTYPE:
b0796911 9472 /* Skip mapping symbols. */
0367ecfb 9473 if ((q->symbol.flags & BSF_LOCAL)
b0796911
PB
9474 && bfd_is_arm_special_symbol_name (q->symbol.name,
9475 BFD_ARM_SPECIAL_SYM_TYPE_ANY))
0367ecfb
NC
9476 continue;
9477 /* Fall through. */
6b40fcba 9478 if (bfd_get_section (&q->symbol) == section
252b5132
RH
9479 && q->symbol.value >= low_func
9480 && q->symbol.value <= offset)
9481 {
9482 func = (asymbol *) q;
9483 low_func = q->symbol.value;
9484 }
9485 break;
9486 }
9487 }
9488
9489 if (func == NULL)
b34976b6 9490 return FALSE;
252b5132 9491
0367ecfb
NC
9492 if (filename_ptr)
9493 *filename_ptr = filename;
9494 if (functionname_ptr)
9495 *functionname_ptr = bfd_asymbol_name (func);
9496
9497 return TRUE;
906e58ca 9498}
0367ecfb
NC
9499
9500
9501/* Find the nearest line to a particular section and offset, for error
9502 reporting. This code is a duplicate of the code in elf.c, except
9503 that it uses arm_elf_find_function. */
9504
9505static bfd_boolean
9506elf32_arm_find_nearest_line (bfd * abfd,
9507 asection * section,
9508 asymbol ** symbols,
9509 bfd_vma offset,
9510 const char ** filename_ptr,
9511 const char ** functionname_ptr,
9512 unsigned int * line_ptr)
9513{
9514 bfd_boolean found = FALSE;
9515
9516 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
9517
9518 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
9519 filename_ptr, functionname_ptr,
9520 line_ptr, 0,
9521 & elf_tdata (abfd)->dwarf2_find_line_info))
9522 {
9523 if (!*functionname_ptr)
9524 arm_elf_find_function (abfd, section, symbols, offset,
9525 *filename_ptr ? NULL : filename_ptr,
9526 functionname_ptr);
f21f3fe0 9527
0367ecfb
NC
9528 return TRUE;
9529 }
9530
9531 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
9532 & found, filename_ptr,
9533 functionname_ptr, line_ptr,
9534 & elf_tdata (abfd)->line_info))
9535 return FALSE;
9536
9537 if (found && (*functionname_ptr || *line_ptr))
9538 return TRUE;
9539
9540 if (symbols == NULL)
9541 return FALSE;
9542
9543 if (! arm_elf_find_function (abfd, section, symbols, offset,
9544 filename_ptr, functionname_ptr))
9545 return FALSE;
9546
9547 *line_ptr = 0;
b34976b6 9548 return TRUE;
252b5132
RH
9549}
9550
4ab527b0
FF
9551static bfd_boolean
9552elf32_arm_find_inliner_info (bfd * abfd,
9553 const char ** filename_ptr,
9554 const char ** functionname_ptr,
9555 unsigned int * line_ptr)
9556{
9557 bfd_boolean found;
9558 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
9559 functionname_ptr, line_ptr,
9560 & elf_tdata (abfd)->dwarf2_find_line_info);
9561 return found;
9562}
9563
252b5132
RH
9564/* Adjust a symbol defined by a dynamic object and referenced by a
9565 regular object. The current definition is in some section of the
9566 dynamic object, but we're not including those sections. We have to
9567 change the definition to something the rest of the link can
9568 understand. */
9569
b34976b6 9570static bfd_boolean
57e8b36a
NC
9571elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
9572 struct elf_link_hash_entry * h)
252b5132
RH
9573{
9574 bfd * dynobj;
9575 asection * s;
b7693d02 9576 struct elf32_arm_link_hash_entry * eh;
67687978 9577 struct elf32_arm_link_hash_table *globals;
252b5132 9578
67687978 9579 globals = elf32_arm_hash_table (info);
252b5132
RH
9580 dynobj = elf_hash_table (info)->dynobj;
9581
9582 /* Make sure we know what is going on here. */
9583 BFD_ASSERT (dynobj != NULL
f5385ebf 9584 && (h->needs_plt
f6e332e6 9585 || h->u.weakdef != NULL
f5385ebf
AM
9586 || (h->def_dynamic
9587 && h->ref_regular
9588 && !h->def_regular)));
252b5132 9589
b7693d02
DJ
9590 eh = (struct elf32_arm_link_hash_entry *) h;
9591
252b5132
RH
9592 /* If this is a function, put it in the procedure linkage table. We
9593 will fill in the contents of the procedure linkage table later,
9594 when we know the address of the .got section. */
b7693d02 9595 if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
f5385ebf 9596 || h->needs_plt)
252b5132 9597 {
5e681ec4
PB
9598 if (h->plt.refcount <= 0
9599 || SYMBOL_CALLS_LOCAL (info, h)
9600 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
9601 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH
9602 {
9603 /* This case can occur if we saw a PLT32 reloc in an input
5e681ec4
PB
9604 file, but the symbol was never referred to by a dynamic
9605 object, or if all references were garbage collected. In
9606 such a case, we don't actually need to build a procedure
9607 linkage table, and we can just do a PC24 reloc instead. */
9608 h->plt.offset = (bfd_vma) -1;
b7693d02 9609 eh->plt_thumb_refcount = 0;
bd97cb95 9610 eh->plt_maybe_thumb_refcount = 0;
f5385ebf 9611 h->needs_plt = 0;
252b5132
RH
9612 }
9613
b34976b6 9614 return TRUE;
252b5132 9615 }
5e681ec4 9616 else
b7693d02
DJ
9617 {
9618 /* It's possible that we incorrectly decided a .plt reloc was
9619 needed for an R_ARM_PC24 or similar reloc to a non-function sym
9620 in check_relocs. We can't decide accurately between function
9621 and non-function syms in check-relocs; Objects loaded later in
9622 the link may change h->type. So fix it now. */
9623 h->plt.offset = (bfd_vma) -1;
9624 eh->plt_thumb_refcount = 0;
bd97cb95 9625 eh->plt_maybe_thumb_refcount = 0;
b7693d02 9626 }
252b5132
RH
9627
9628 /* If this is a weak symbol, and there is a real definition, the
9629 processor independent code will have arranged for us to see the
9630 real definition first, and we can just use the same value. */
f6e332e6 9631 if (h->u.weakdef != NULL)
252b5132 9632 {
f6e332e6
AM
9633 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
9634 || h->u.weakdef->root.type == bfd_link_hash_defweak);
9635 h->root.u.def.section = h->u.weakdef->root.u.def.section;
9636 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 9637 return TRUE;
252b5132
RH
9638 }
9639
ba93b8ac
DJ
9640 /* If there are no non-GOT references, we do not need a copy
9641 relocation. */
9642 if (!h->non_got_ref)
9643 return TRUE;
9644
252b5132
RH
9645 /* This is a reference to a symbol defined by a dynamic object which
9646 is not a function. */
9647
9648 /* If we are creating a shared library, we must presume that the
9649 only references to the symbol are via the global offset table.
9650 For such cases we need not do anything here; the relocations will
67687978
PB
9651 be handled correctly by relocate_section. Relocatable executables
9652 can reference data in shared objects directly, so we don't need to
9653 do anything here. */
9654 if (info->shared || globals->root.is_relocatable_executable)
b34976b6 9655 return TRUE;
252b5132 9656
909272ee
AM
9657 if (h->size == 0)
9658 {
9659 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
9660 h->root.root.string);
9661 return TRUE;
9662 }
9663
252b5132
RH
9664 /* We must allocate the symbol in our .dynbss section, which will
9665 become part of the .bss section of the executable. There will be
9666 an entry for this symbol in the .dynsym section. The dynamic
9667 object will contain position independent code, so all references
9668 from the dynamic object to this symbol will go through the global
9669 offset table. The dynamic linker will use the .dynsym entry to
9670 determine the address it must put in the global offset table, so
9671 both the dynamic object and the regular object will refer to the
9672 same memory location for the variable. */
252b5132
RH
9673 s = bfd_get_section_by_name (dynobj, ".dynbss");
9674 BFD_ASSERT (s != NULL);
9675
9676 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
9677 copy the initial value out of the dynamic object and into the
9678 runtime process image. We need to remember the offset into the
00a97672 9679 .rel(a).bss section we are going to use. */
252b5132
RH
9680 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
9681 {
9682 asection *srel;
9683
00a97672 9684 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss"));
252b5132 9685 BFD_ASSERT (srel != NULL);
00a97672 9686 srel->size += RELOC_SIZE (globals);
f5385ebf 9687 h->needs_copy = 1;
252b5132
RH
9688 }
9689
027297b7 9690 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH
9691}
9692
5e681ec4
PB
9693/* Allocate space in .plt, .got and associated reloc sections for
9694 dynamic relocs. */
9695
9696static bfd_boolean
57e8b36a 9697allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
5e681ec4
PB
9698{
9699 struct bfd_link_info *info;
9700 struct elf32_arm_link_hash_table *htab;
9701 struct elf32_arm_link_hash_entry *eh;
9702 struct elf32_arm_relocs_copied *p;
bd97cb95 9703 bfd_signed_vma thumb_refs;
5e681ec4 9704
b7693d02
DJ
9705 eh = (struct elf32_arm_link_hash_entry *) h;
9706
5e681ec4
PB
9707 if (h->root.type == bfd_link_hash_indirect)
9708 return TRUE;
9709
9710 if (h->root.type == bfd_link_hash_warning)
9711 /* When warning symbols are created, they **replace** the "real"
9712 entry in the hash table, thus we never get to see the real
9713 symbol in a hash traversal. So look at it now. */
9714 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9715
9716 info = (struct bfd_link_info *) inf;
9717 htab = elf32_arm_hash_table (info);
9718
9719 if (htab->root.dynamic_sections_created
9720 && h->plt.refcount > 0)
9721 {
9722 /* Make sure this symbol is output as a dynamic symbol.
9723 Undefined weak syms won't yet be marked as dynamic. */
9724 if (h->dynindx == -1
f5385ebf 9725 && !h->forced_local)
5e681ec4 9726 {
c152c796 9727 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB
9728 return FALSE;
9729 }
9730
9731 if (info->shared
7359ea65 9732 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
5e681ec4
PB
9733 {
9734 asection *s = htab->splt;
9735
9736 /* If this is the first .plt entry, make room for the special
9737 first entry. */
eea6121a 9738 if (s->size == 0)
e5a52504 9739 s->size += htab->plt_header_size;
5e681ec4 9740
eea6121a 9741 h->plt.offset = s->size;
5e681ec4 9742
b7693d02
DJ
9743 /* If we will insert a Thumb trampoline before this PLT, leave room
9744 for it. */
bd97cb95
DJ
9745 thumb_refs = eh->plt_thumb_refcount;
9746 if (!htab->use_blx)
9747 thumb_refs += eh->plt_maybe_thumb_refcount;
9748
9749 if (thumb_refs > 0)
b7693d02
DJ
9750 {
9751 h->plt.offset += PLT_THUMB_STUB_SIZE;
9752 s->size += PLT_THUMB_STUB_SIZE;
9753 }
9754
5e681ec4
PB
9755 /* If this symbol is not defined in a regular file, and we are
9756 not generating a shared library, then set the symbol to this
9757 location in the .plt. This is required to make function
9758 pointers compare as equal between the normal executable and
9759 the shared library. */
9760 if (! info->shared
f5385ebf 9761 && !h->def_regular)
5e681ec4
PB
9762 {
9763 h->root.u.def.section = s;
9764 h->root.u.def.value = h->plt.offset;
b7693d02
DJ
9765
9766 /* Make sure the function is not marked as Thumb, in case
9767 it is the target of an ABS32 relocation, which will
9768 point to the PLT entry. */
9769 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
9770 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
5e681ec4
PB
9771 }
9772
9773 /* Make room for this entry. */
e5a52504 9774 s->size += htab->plt_entry_size;
5e681ec4 9775
e5a52504 9776 if (!htab->symbian_p)
b7693d02
DJ
9777 {
9778 /* We also need to make an entry in the .got.plt section, which
9779 will be placed in the .got section by the linker script. */
9780 eh->plt_got_offset = htab->sgotplt->size;
9781 htab->sgotplt->size += 4;
9782 }
5e681ec4 9783
00a97672
RS
9784 /* We also need to make an entry in the .rel(a).plt section. */
9785 htab->srelplt->size += RELOC_SIZE (htab);
9786
9787 /* VxWorks executables have a second set of relocations for
9788 each PLT entry. They go in a separate relocation section,
9789 which is processed by the kernel loader. */
9790 if (htab->vxworks_p && !info->shared)
9791 {
9792 /* There is a relocation for the initial PLT entry:
9793 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
9794 if (h->plt.offset == htab->plt_header_size)
9795 htab->srelplt2->size += RELOC_SIZE (htab);
9796
9797 /* There are two extra relocations for each subsequent
9798 PLT entry: an R_ARM_32 relocation for the GOT entry,
9799 and an R_ARM_32 relocation for the PLT entry. */
9800 htab->srelplt2->size += RELOC_SIZE (htab) * 2;
9801 }
5e681ec4
PB
9802 }
9803 else
9804 {
9805 h->plt.offset = (bfd_vma) -1;
f5385ebf 9806 h->needs_plt = 0;
5e681ec4
PB
9807 }
9808 }
9809 else
9810 {
9811 h->plt.offset = (bfd_vma) -1;
f5385ebf 9812 h->needs_plt = 0;
5e681ec4
PB
9813 }
9814
9815 if (h->got.refcount > 0)
9816 {
9817 asection *s;
9818 bfd_boolean dyn;
ba93b8ac
DJ
9819 int tls_type = elf32_arm_hash_entry (h)->tls_type;
9820 int indx;
5e681ec4
PB
9821
9822 /* Make sure this symbol is output as a dynamic symbol.
9823 Undefined weak syms won't yet be marked as dynamic. */
9824 if (h->dynindx == -1
f5385ebf 9825 && !h->forced_local)
5e681ec4 9826 {
c152c796 9827 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB
9828 return FALSE;
9829 }
9830
e5a52504
MM
9831 if (!htab->symbian_p)
9832 {
9833 s = htab->sgot;
9834 h->got.offset = s->size;
ba93b8ac
DJ
9835
9836 if (tls_type == GOT_UNKNOWN)
9837 abort ();
9838
9839 if (tls_type == GOT_NORMAL)
9840 /* Non-TLS symbols need one GOT slot. */
9841 s->size += 4;
9842 else
9843 {
9844 if (tls_type & GOT_TLS_GD)
9845 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
9846 s->size += 8;
9847 if (tls_type & GOT_TLS_IE)
9848 /* R_ARM_TLS_IE32 needs one GOT slot. */
9849 s->size += 4;
9850 }
9851
e5a52504 9852 dyn = htab->root.dynamic_sections_created;
ba93b8ac
DJ
9853
9854 indx = 0;
9855 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
9856 && (!info->shared
9857 || !SYMBOL_REFERENCES_LOCAL (info, h)))
9858 indx = h->dynindx;
9859
9860 if (tls_type != GOT_NORMAL
9861 && (info->shared || indx != 0)
9862 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9863 || h->root.type != bfd_link_hash_undefweak))
9864 {
9865 if (tls_type & GOT_TLS_IE)
00a97672 9866 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ
9867
9868 if (tls_type & GOT_TLS_GD)
00a97672 9869 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ
9870
9871 if ((tls_type & GOT_TLS_GD) && indx != 0)
00a97672 9872 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ
9873 }
9874 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
9875 || h->root.type != bfd_link_hash_undefweak)
9876 && (info->shared
9877 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
00a97672 9878 htab->srelgot->size += RELOC_SIZE (htab);
e5a52504 9879 }
5e681ec4
PB
9880 }
9881 else
9882 h->got.offset = (bfd_vma) -1;
9883
a4fd1a8e
PB
9884 /* Allocate stubs for exported Thumb functions on v4t. */
9885 if (!htab->use_blx && h->dynindx != -1
0eaedd0e 9886 && h->def_regular
a4fd1a8e
PB
9887 && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
9888 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
9889 {
9890 struct elf_link_hash_entry * th;
9891 struct bfd_link_hash_entry * bh;
9892 struct elf_link_hash_entry * myh;
9893 char name[1024];
9894 asection *s;
9895 bh = NULL;
9896 /* Create a new symbol to regist the real location of the function. */
9897 s = h->root.u.def.section;
906e58ca 9898 sprintf (name, "__real_%s", h->root.root.string);
a4fd1a8e
PB
9899 _bfd_generic_link_add_one_symbol (info, s->owner,
9900 name, BSF_GLOBAL, s,
9901 h->root.u.def.value,
9902 NULL, TRUE, FALSE, &bh);
9903
9904 myh = (struct elf_link_hash_entry *) bh;
9905 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
9906 myh->forced_local = 1;
9907 eh->export_glue = myh;
9908 th = record_arm_to_thumb_glue (info, h);
9909 /* Point the symbol at the stub. */
9910 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
9911 h->root.u.def.section = th->root.u.def.section;
9912 h->root.u.def.value = th->root.u.def.value & ~1;
9913 }
9914
5e681ec4
PB
9915 if (eh->relocs_copied == NULL)
9916 return TRUE;
9917
9918 /* In the shared -Bsymbolic case, discard space allocated for
9919 dynamic pc-relative relocs against symbols which turn out to be
9920 defined in regular objects. For the normal shared case, discard
9921 space for pc-relative relocs that have become local due to symbol
9922 visibility changes. */
9923
67687978 9924 if (info->shared || htab->root.is_relocatable_executable)
5e681ec4 9925 {
7bdca076 9926 /* The only relocs that use pc_count are R_ARM_REL32 and
bb224fc3
MS
9927 R_ARM_REL32_NOI, which will appear on something like
9928 ".long foo - .". We want calls to protected symbols to resolve
9929 directly to the function rather than going via the plt. If people
9930 want function pointer comparisons to work as expected then they
9931 should avoid writing assembly like ".long foo - .". */
ba93b8ac
DJ
9932 if (SYMBOL_CALLS_LOCAL (info, h))
9933 {
9934 struct elf32_arm_relocs_copied **pp;
9935
9936 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
9937 {
9938 p->count -= p->pc_count;
9939 p->pc_count = 0;
9940 if (p->count == 0)
9941 *pp = p->next;
9942 else
9943 pp = &p->next;
9944 }
9945 }
9946
3348747a
NS
9947 if (elf32_arm_hash_table (info)->vxworks_p)
9948 {
9949 struct elf32_arm_relocs_copied **pp;
9950
9951 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
9952 {
9953 if (strcmp (p->section->output_section->name, ".tls_vars") == 0)
9954 *pp = p->next;
9955 else
9956 pp = &p->next;
9957 }
9958 }
9959
ba93b8ac 9960 /* Also discard relocs on undefined weak syms with non-default
7359ea65 9961 visibility. */
22d606e9 9962 if (eh->relocs_copied != NULL
5e681ec4 9963 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM
9964 {
9965 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
9966 eh->relocs_copied = NULL;
9967
9968 /* Make sure undefined weak symbols are output as a dynamic
9969 symbol in PIEs. */
9970 else if (h->dynindx == -1
9971 && !h->forced_local)
9972 {
9973 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9974 return FALSE;
9975 }
9976 }
9977
67687978
PB
9978 else if (htab->root.is_relocatable_executable && h->dynindx == -1
9979 && h->root.type == bfd_link_hash_new)
9980 {
9981 /* Output absolute symbols so that we can create relocations
9982 against them. For normal symbols we output a relocation
9983 against the section that contains them. */
9984 if (! bfd_elf_link_record_dynamic_symbol (info, h))
9985 return FALSE;
9986 }
9987
5e681ec4
PB
9988 }
9989 else
9990 {
9991 /* For the non-shared case, discard space for relocs against
9992 symbols which turn out to need copy relocs or are not
9993 dynamic. */
9994
f5385ebf
AM
9995 if (!h->non_got_ref
9996 && ((h->def_dynamic
9997 && !h->def_regular)
5e681ec4
PB
9998 || (htab->root.dynamic_sections_created
9999 && (h->root.type == bfd_link_hash_undefweak
10000 || h->root.type == bfd_link_hash_undefined))))
10001 {
10002 /* Make sure this symbol is output as a dynamic symbol.
10003 Undefined weak syms won't yet be marked as dynamic. */
10004 if (h->dynindx == -1
f5385ebf 10005 && !h->forced_local)
5e681ec4 10006 {
c152c796 10007 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB
10008 return FALSE;
10009 }
10010
10011 /* If that succeeded, we know we'll be keeping all the
10012 relocs. */
10013 if (h->dynindx != -1)
10014 goto keep;
10015 }
10016
10017 eh->relocs_copied = NULL;
10018
10019 keep: ;
10020 }
10021
10022 /* Finally, allocate space. */
10023 for (p = eh->relocs_copied; p != NULL; p = p->next)
10024 {
10025 asection *sreloc = elf_section_data (p->section)->sreloc;
00a97672 10026 sreloc->size += p->count * RELOC_SIZE (htab);
5e681ec4
PB
10027 }
10028
10029 return TRUE;
10030}
10031
08d1f311
DJ
10032/* Find any dynamic relocs that apply to read-only sections. */
10033
10034static bfd_boolean
8029a119 10035elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf)
08d1f311 10036{
8029a119
NC
10037 struct elf32_arm_link_hash_entry * eh;
10038 struct elf32_arm_relocs_copied * p;
08d1f311
DJ
10039
10040 if (h->root.type == bfd_link_hash_warning)
10041 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10042
10043 eh = (struct elf32_arm_link_hash_entry *) h;
10044 for (p = eh->relocs_copied; p != NULL; p = p->next)
10045 {
10046 asection *s = p->section;
10047
10048 if (s != NULL && (s->flags & SEC_READONLY) != 0)
10049 {
10050 struct bfd_link_info *info = (struct bfd_link_info *) inf;
10051
10052 info->flags |= DF_TEXTREL;
10053
10054 /* Not an error, just cut short the traversal. */
10055 return FALSE;
10056 }
10057 }
10058 return TRUE;
10059}
10060
d504ffc8
DJ
10061void
10062bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info,
10063 int byteswap_code)
10064{
10065 struct elf32_arm_link_hash_table *globals;
10066
10067 globals = elf32_arm_hash_table (info);
10068 globals->byteswap_code = byteswap_code;
10069}
10070
252b5132
RH
10071/* Set the sizes of the dynamic sections. */
10072
b34976b6 10073static bfd_boolean
57e8b36a
NC
10074elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
10075 struct bfd_link_info * info)
252b5132
RH
10076{
10077 bfd * dynobj;
10078 asection * s;
b34976b6
AM
10079 bfd_boolean plt;
10080 bfd_boolean relocs;
5e681ec4
PB
10081 bfd *ibfd;
10082 struct elf32_arm_link_hash_table *htab;
252b5132 10083
5e681ec4 10084 htab = elf32_arm_hash_table (info);
252b5132
RH
10085 dynobj = elf_hash_table (info)->dynobj;
10086 BFD_ASSERT (dynobj != NULL);
39b41c9c 10087 check_use_blx (htab);
252b5132
RH
10088
10089 if (elf_hash_table (info)->dynamic_sections_created)
10090 {
10091 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 10092 if (info->executable)
252b5132
RH
10093 {
10094 s = bfd_get_section_by_name (dynobj, ".interp");
10095 BFD_ASSERT (s != NULL);
eea6121a 10096 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH
10097 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
10098 }
10099 }
5e681ec4
PB
10100
10101 /* Set up .got offsets for local syms, and space for local dynamic
10102 relocs. */
10103 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
252b5132 10104 {
5e681ec4
PB
10105 bfd_signed_vma *local_got;
10106 bfd_signed_vma *end_local_got;
10107 char *local_tls_type;
10108 bfd_size_type locsymcount;
10109 Elf_Internal_Shdr *symtab_hdr;
10110 asection *srel;
3348747a 10111 bfd_boolean is_vxworks = elf32_arm_hash_table (info)->vxworks_p;
5e681ec4 10112
0ffa91dd 10113 if (! is_arm_elf (ibfd))
5e681ec4
PB
10114 continue;
10115
10116 for (s = ibfd->sections; s != NULL; s = s->next)
10117 {
10118 struct elf32_arm_relocs_copied *p;
10119
6edfbbad 10120 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
5e681ec4
PB
10121 {
10122 if (!bfd_is_abs_section (p->section)
10123 && bfd_is_abs_section (p->section->output_section))
10124 {
10125 /* Input section has been discarded, either because
10126 it is a copy of a linkonce section or due to
10127 linker script /DISCARD/, so we'll be discarding
10128 the relocs too. */
10129 }
3348747a
NS
10130 else if (is_vxworks
10131 && strcmp (p->section->output_section->name,
10132 ".tls_vars") == 0)
10133 {
10134 /* Relocations in vxworks .tls_vars sections are
10135 handled specially by the loader. */
10136 }
5e681ec4
PB
10137 else if (p->count != 0)
10138 {
10139 srel = elf_section_data (p->section)->sreloc;
00a97672 10140 srel->size += p->count * RELOC_SIZE (htab);
5e681ec4
PB
10141 if ((p->section->output_section->flags & SEC_READONLY) != 0)
10142 info->flags |= DF_TEXTREL;
10143 }
10144 }
10145 }
10146
10147 local_got = elf_local_got_refcounts (ibfd);
10148 if (!local_got)
10149 continue;
10150
0ffa91dd 10151 symtab_hdr = & elf_symtab_hdr (ibfd);
5e681ec4
PB
10152 locsymcount = symtab_hdr->sh_info;
10153 end_local_got = local_got + locsymcount;
ba93b8ac 10154 local_tls_type = elf32_arm_local_got_tls_type (ibfd);
5e681ec4
PB
10155 s = htab->sgot;
10156 srel = htab->srelgot;
10157 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
10158 {
10159 if (*local_got > 0)
10160 {
eea6121a 10161 *local_got = s->size;
ba93b8ac
DJ
10162 if (*local_tls_type & GOT_TLS_GD)
10163 /* TLS_GD relocs need an 8-byte structure in the GOT. */
10164 s->size += 8;
10165 if (*local_tls_type & GOT_TLS_IE)
10166 s->size += 4;
10167 if (*local_tls_type == GOT_NORMAL)
10168 s->size += 4;
10169
10170 if (info->shared || *local_tls_type == GOT_TLS_GD)
00a97672 10171 srel->size += RELOC_SIZE (htab);
5e681ec4
PB
10172 }
10173 else
10174 *local_got = (bfd_vma) -1;
10175 }
252b5132
RH
10176 }
10177
ba93b8ac
DJ
10178 if (htab->tls_ldm_got.refcount > 0)
10179 {
10180 /* Allocate two GOT entries and one dynamic relocation (if necessary)
10181 for R_ARM_TLS_LDM32 relocations. */
10182 htab->tls_ldm_got.offset = htab->sgot->size;
10183 htab->sgot->size += 8;
10184 if (info->shared)
00a97672 10185 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ
10186 }
10187 else
10188 htab->tls_ldm_got.offset = -1;
10189
5e681ec4
PB
10190 /* Allocate global sym .plt and .got entries, and space for global
10191 sym dynamic relocs. */
57e8b36a 10192 elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info);
252b5132 10193
d504ffc8
DJ
10194 /* Here we rummage through the found bfds to collect glue information. */
10195 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
c7b8f16e 10196 {
0ffa91dd 10197 if (! is_arm_elf (ibfd))
e44a2c9c
AM
10198 continue;
10199
c7b8f16e
JB
10200 /* Initialise mapping tables for code/data. */
10201 bfd_elf32_arm_init_maps (ibfd);
906e58ca 10202
c7b8f16e
JB
10203 if (!bfd_elf32_arm_process_before_allocation (ibfd, info)
10204 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info))
10205 /* xgettext:c-format */
10206 _bfd_error_handler (_("Errors encountered processing file %s"),
10207 ibfd->filename);
10208 }
d504ffc8 10209
252b5132
RH
10210 /* The check_relocs and adjust_dynamic_symbol entry points have
10211 determined the sizes of the various dynamic sections. Allocate
10212 memory for them. */
b34976b6
AM
10213 plt = FALSE;
10214 relocs = FALSE;
252b5132
RH
10215 for (s = dynobj->sections; s != NULL; s = s->next)
10216 {
10217 const char * name;
252b5132
RH
10218
10219 if ((s->flags & SEC_LINKER_CREATED) == 0)
10220 continue;
10221
10222 /* It's OK to base decisions on the section name, because none
10223 of the dynobj section names depend upon the input files. */
10224 name = bfd_get_section_name (dynobj, s);
10225
24a1ba0f 10226 if (strcmp (name, ".plt") == 0)
252b5132 10227 {
c456f082
AM
10228 /* Remember whether there is a PLT. */
10229 plt = s->size != 0;
252b5132 10230 }
0112cd26 10231 else if (CONST_STRNEQ (name, ".rel"))
252b5132 10232 {
c456f082 10233 if (s->size != 0)
252b5132 10234 {
252b5132 10235 /* Remember whether there are any reloc sections other
00a97672
RS
10236 than .rel(a).plt and .rela.plt.unloaded. */
10237 if (s != htab->srelplt && s != htab->srelplt2)
b34976b6 10238 relocs = TRUE;
252b5132
RH
10239
10240 /* We use the reloc_count field as a counter if we need
10241 to copy relocs into the output file. */
10242 s->reloc_count = 0;
10243 }
10244 }
0112cd26 10245 else if (! CONST_STRNEQ (name, ".got")
c456f082 10246 && strcmp (name, ".dynbss") != 0)
252b5132
RH
10247 {
10248 /* It's not one of our sections, so don't allocate space. */
10249 continue;
10250 }
10251
c456f082 10252 if (s->size == 0)
252b5132 10253 {
c456f082 10254 /* If we don't need this section, strip it from the
00a97672
RS
10255 output file. This is mostly to handle .rel(a).bss and
10256 .rel(a).plt. We must create both sections in
c456f082
AM
10257 create_dynamic_sections, because they must be created
10258 before the linker maps input sections to output
10259 sections. The linker does that before
10260 adjust_dynamic_symbol is called, and it is that
10261 function which decides whether anything needs to go
10262 into these sections. */
8423293d 10263 s->flags |= SEC_EXCLUDE;
252b5132
RH
10264 continue;
10265 }
10266
c456f082
AM
10267 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10268 continue;
10269
252b5132 10270 /* Allocate memory for the section contents. */
906e58ca 10271 s->contents = bfd_zalloc (dynobj, s->size);
c456f082 10272 if (s->contents == NULL)
b34976b6 10273 return FALSE;
252b5132
RH
10274 }
10275
10276 if (elf_hash_table (info)->dynamic_sections_created)
10277 {
10278 /* Add some entries to the .dynamic section. We fill in the
10279 values later, in elf32_arm_finish_dynamic_sections, but we
10280 must add the entries now so that we get the correct size for
10281 the .dynamic section. The DT_DEBUG entry is filled in by the
10282 dynamic linker and used by the debugger. */
dc810e39 10283#define add_dynamic_entry(TAG, VAL) \
5a580b3a 10284 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 10285
8532796c 10286 if (info->executable)
252b5132 10287 {
dc810e39 10288 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 10289 return FALSE;
252b5132
RH
10290 }
10291
10292 if (plt)
10293 {
dc810e39
AM
10294 if ( !add_dynamic_entry (DT_PLTGOT, 0)
10295 || !add_dynamic_entry (DT_PLTRELSZ, 0)
00a97672
RS
10296 || !add_dynamic_entry (DT_PLTREL,
10297 htab->use_rel ? DT_REL : DT_RELA)
dc810e39 10298 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 10299 return FALSE;
252b5132
RH
10300 }
10301
10302 if (relocs)
10303 {
00a97672
RS
10304 if (htab->use_rel)
10305 {
10306 if (!add_dynamic_entry (DT_REL, 0)
10307 || !add_dynamic_entry (DT_RELSZ, 0)
10308 || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab)))
10309 return FALSE;
10310 }
10311 else
10312 {
10313 if (!add_dynamic_entry (DT_RELA, 0)
10314 || !add_dynamic_entry (DT_RELASZ, 0)
10315 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
10316 return FALSE;
10317 }
252b5132
RH
10318 }
10319
08d1f311
DJ
10320 /* If any dynamic relocs apply to a read-only section,
10321 then we need a DT_TEXTREL entry. */
10322 if ((info->flags & DF_TEXTREL) == 0)
8029a119
NC
10323 elf_link_hash_traverse (& htab->root, elf32_arm_readonly_dynrelocs,
10324 info);
08d1f311 10325
99e4ae17 10326 if ((info->flags & DF_TEXTREL) != 0)
252b5132 10327 {
dc810e39 10328 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 10329 return FALSE;
252b5132 10330 }
7a2b07ff
NS
10331 if (htab->vxworks_p
10332 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
10333 return FALSE;
252b5132 10334 }
8532796c 10335#undef add_dynamic_entry
252b5132 10336
b34976b6 10337 return TRUE;
252b5132
RH
10338}
10339
252b5132
RH
10340/* Finish up dynamic symbol handling. We set the contents of various
10341 dynamic sections here. */
10342
b34976b6 10343static bfd_boolean
906e58ca
NC
10344elf32_arm_finish_dynamic_symbol (bfd * output_bfd,
10345 struct bfd_link_info * info,
10346 struct elf_link_hash_entry * h,
10347 Elf_Internal_Sym * sym)
252b5132
RH
10348{
10349 bfd * dynobj;
e5a52504 10350 struct elf32_arm_link_hash_table *htab;
b7693d02 10351 struct elf32_arm_link_hash_entry *eh;
252b5132
RH
10352
10353 dynobj = elf_hash_table (info)->dynobj;
e5a52504 10354 htab = elf32_arm_hash_table (info);
b7693d02 10355 eh = (struct elf32_arm_link_hash_entry *) h;
252b5132
RH
10356
10357 if (h->plt.offset != (bfd_vma) -1)
10358 {
10359 asection * splt;
252b5132 10360 asection * srel;
e5a52504 10361 bfd_byte *loc;
24a1ba0f 10362 bfd_vma plt_index;
947216bf 10363 Elf_Internal_Rela rel;
252b5132
RH
10364
10365 /* This symbol has an entry in the procedure linkage table. Set
10366 it up. */
10367
10368 BFD_ASSERT (h->dynindx != -1);
10369
10370 splt = bfd_get_section_by_name (dynobj, ".plt");
00a97672 10371 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt"));
e5a52504 10372 BFD_ASSERT (splt != NULL && srel != NULL);
252b5132 10373
e5a52504
MM
10374 /* Fill in the entry in the procedure linkage table. */
10375 if (htab->symbian_p)
10376 {
906e58ca 10377 put_arm_insn (htab, output_bfd,
52ab56c2
PB
10378 elf32_arm_symbian_plt_entry[0],
10379 splt->contents + h->plt.offset);
906e58ca 10380 bfd_put_32 (output_bfd,
52ab56c2
PB
10381 elf32_arm_symbian_plt_entry[1],
10382 splt->contents + h->plt.offset + 4);
906e58ca 10383
e5a52504 10384 /* Fill in the entry in the .rel.plt section. */
2a1b9a48
MM
10385 rel.r_offset = (splt->output_section->vma
10386 + splt->output_offset
52ab56c2 10387 + h->plt.offset + 4);
e5a52504 10388 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
b7693d02
DJ
10389
10390 /* Get the index in the procedure linkage table which
10391 corresponds to this symbol. This is the index of this symbol
10392 in all the symbols for which we are making plt entries. The
10393 first entry in the procedure linkage table is reserved. */
906e58ca 10394 plt_index = ((h->plt.offset - htab->plt_header_size)
b7693d02 10395 / htab->plt_entry_size);
e5a52504
MM
10396 }
10397 else
10398 {
00a97672 10399 bfd_vma got_offset, got_address, plt_address;
e5a52504
MM
10400 bfd_vma got_displacement;
10401 asection * sgot;
52ab56c2 10402 bfd_byte * ptr;
906e58ca 10403
e5a52504
MM
10404 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
10405 BFD_ASSERT (sgot != NULL);
10406
b7693d02
DJ
10407 /* Get the offset into the .got.plt table of the entry that
10408 corresponds to this function. */
10409 got_offset = eh->plt_got_offset;
10410
10411 /* Get the index in the procedure linkage table which
10412 corresponds to this symbol. This is the index of this symbol
10413 in all the symbols for which we are making plt entries. The
10414 first three entries in .got.plt are reserved; after that
10415 symbols appear in the same order as in .plt. */
10416 plt_index = (got_offset - 12) / 4;
e5a52504 10417
00a97672
RS
10418 /* Calculate the address of the GOT entry. */
10419 got_address = (sgot->output_section->vma
10420 + sgot->output_offset
10421 + got_offset);
5e681ec4 10422
00a97672
RS
10423 /* ...and the address of the PLT entry. */
10424 plt_address = (splt->output_section->vma
10425 + splt->output_offset
10426 + h->plt.offset);
5e681ec4 10427
52ab56c2 10428 ptr = htab->splt->contents + h->plt.offset;
00a97672
RS
10429 if (htab->vxworks_p && info->shared)
10430 {
10431 unsigned int i;
10432 bfd_vma val;
10433
52ab56c2 10434 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
00a97672
RS
10435 {
10436 val = elf32_arm_vxworks_shared_plt_entry[i];
10437 if (i == 2)
10438 val |= got_address - sgot->output_section->vma;
10439 if (i == 5)
10440 val |= plt_index * RELOC_SIZE (htab);
52ab56c2
PB
10441 if (i == 2 || i == 5)
10442 bfd_put_32 (output_bfd, val, ptr);
10443 else
10444 put_arm_insn (htab, output_bfd, val, ptr);
00a97672
RS
10445 }
10446 }
10447 else if (htab->vxworks_p)
b7693d02 10448 {
00a97672
RS
10449 unsigned int i;
10450 bfd_vma val;
10451
d3753b85 10452 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
00a97672
RS
10453 {
10454 val = elf32_arm_vxworks_exec_plt_entry[i];
10455 if (i == 2)
10456 val |= got_address;
10457 if (i == 4)
10458 val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2);
10459 if (i == 5)
10460 val |= plt_index * RELOC_SIZE (htab);
52ab56c2
PB
10461 if (i == 2 || i == 5)
10462 bfd_put_32 (output_bfd, val, ptr);
10463 else
10464 put_arm_insn (htab, output_bfd, val, ptr);
00a97672
RS
10465 }
10466
10467 loc = (htab->srelplt2->contents
10468 + (plt_index * 2 + 1) * RELOC_SIZE (htab));
10469
10470 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
10471 referencing the GOT for this PLT entry. */
10472 rel.r_offset = plt_address + 8;
10473 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
10474 rel.r_addend = got_offset;
10475 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
10476 loc += RELOC_SIZE (htab);
10477
10478 /* Create the R_ARM_ABS32 relocation referencing the
10479 beginning of the PLT for this GOT entry. */
10480 rel.r_offset = got_address;
10481 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
10482 rel.r_addend = 0;
10483 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
b7693d02 10484 }
00a97672
RS
10485 else
10486 {
bd97cb95 10487 bfd_signed_vma thumb_refs;
00a97672
RS
10488 /* Calculate the displacement between the PLT slot and the
10489 entry in the GOT. The eight-byte offset accounts for the
10490 value produced by adding to pc in the first instruction
10491 of the PLT stub. */
10492 got_displacement = got_address - (plt_address + 8);
b7693d02 10493
00a97672
RS
10494 BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
10495
bd97cb95
DJ
10496 thumb_refs = eh->plt_thumb_refcount;
10497 if (!htab->use_blx)
10498 thumb_refs += eh->plt_maybe_thumb_refcount;
10499
10500 if (thumb_refs > 0)
00a97672 10501 {
52ab56c2
PB
10502 put_thumb_insn (htab, output_bfd,
10503 elf32_arm_plt_thumb_stub[0], ptr - 4);
10504 put_thumb_insn (htab, output_bfd,
10505 elf32_arm_plt_thumb_stub[1], ptr - 2);
00a97672
RS
10506 }
10507
52ab56c2
PB
10508 put_arm_insn (htab, output_bfd,
10509 elf32_arm_plt_entry[0]
10510 | ((got_displacement & 0x0ff00000) >> 20),
10511 ptr + 0);
10512 put_arm_insn (htab, output_bfd,
10513 elf32_arm_plt_entry[1]
10514 | ((got_displacement & 0x000ff000) >> 12),
10515 ptr+ 4);
10516 put_arm_insn (htab, output_bfd,
10517 elf32_arm_plt_entry[2]
10518 | (got_displacement & 0x00000fff),
10519 ptr + 8);
5e681ec4 10520#ifdef FOUR_WORD_PLT
52ab56c2 10521 bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12);
5e681ec4 10522#endif
00a97672 10523 }
252b5132 10524
e5a52504
MM
10525 /* Fill in the entry in the global offset table. */
10526 bfd_put_32 (output_bfd,
10527 (splt->output_section->vma
10528 + splt->output_offset),
10529 sgot->contents + got_offset);
906e58ca 10530
00a97672
RS
10531 /* Fill in the entry in the .rel(a).plt section. */
10532 rel.r_addend = 0;
10533 rel.r_offset = got_address;
e5a52504
MM
10534 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
10535 }
57e8b36a 10536
00a97672
RS
10537 loc = srel->contents + plt_index * RELOC_SIZE (htab);
10538 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
252b5132 10539
f5385ebf 10540 if (!h->def_regular)
252b5132
RH
10541 {
10542 /* Mark the symbol as undefined, rather than as defined in
10543 the .plt section. Leave the value alone. */
10544 sym->st_shndx = SHN_UNDEF;
d982ba73
PB
10545 /* If the symbol is weak, we do need to clear the value.
10546 Otherwise, the PLT entry would provide a definition for
10547 the symbol even if the symbol wasn't defined anywhere,
10548 and so the symbol would never be NULL. */
f5385ebf 10549 if (!h->ref_regular_nonweak)
d982ba73 10550 sym->st_value = 0;
252b5132
RH
10551 }
10552 }
10553
ba93b8ac
DJ
10554 if (h->got.offset != (bfd_vma) -1
10555 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0
10556 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0)
252b5132
RH
10557 {
10558 asection * sgot;
10559 asection * srel;
947216bf
AM
10560 Elf_Internal_Rela rel;
10561 bfd_byte *loc;
00a97672 10562 bfd_vma offset;
252b5132
RH
10563
10564 /* This symbol has an entry in the global offset table. Set it
10565 up. */
252b5132 10566 sgot = bfd_get_section_by_name (dynobj, ".got");
00a97672 10567 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got"));
252b5132
RH
10568 BFD_ASSERT (sgot != NULL && srel != NULL);
10569
00a97672
RS
10570 offset = (h->got.offset & ~(bfd_vma) 1);
10571 rel.r_addend = 0;
252b5132
RH
10572 rel.r_offset = (sgot->output_section->vma
10573 + sgot->output_offset
00a97672 10574 + offset);
252b5132 10575
5e681ec4
PB
10576 /* If this is a static link, or it is a -Bsymbolic link and the
10577 symbol is defined locally or was forced to be local because
10578 of a version file, we just want to emit a RELATIVE reloc.
10579 The entry in the global offset table will already have been
10580 initialized in the relocate_section function. */
252b5132 10581 if (info->shared
5e681ec4
PB
10582 && SYMBOL_REFERENCES_LOCAL (info, h))
10583 {
906e58ca 10584 BFD_ASSERT ((h->got.offset & 1) != 0);
5e681ec4 10585 rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
00a97672
RS
10586 if (!htab->use_rel)
10587 {
10588 rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
10589 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
10590 }
5e681ec4 10591 }
252b5132
RH
10592 else
10593 {
906e58ca 10594 BFD_ASSERT ((h->got.offset & 1) == 0);
00a97672 10595 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
252b5132
RH
10596 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
10597 }
10598
00a97672
RS
10599 loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab);
10600 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
252b5132
RH
10601 }
10602
f5385ebf 10603 if (h->needs_copy)
252b5132
RH
10604 {
10605 asection * s;
947216bf
AM
10606 Elf_Internal_Rela rel;
10607 bfd_byte *loc;
252b5132
RH
10608
10609 /* This symbol needs a copy reloc. Set it up. */
252b5132
RH
10610 BFD_ASSERT (h->dynindx != -1
10611 && (h->root.type == bfd_link_hash_defined
10612 || h->root.type == bfd_link_hash_defweak));
10613
10614 s = bfd_get_section_by_name (h->root.u.def.section->owner,
00a97672 10615 RELOC_SECTION (htab, ".bss"));
252b5132
RH
10616 BFD_ASSERT (s != NULL);
10617
00a97672 10618 rel.r_addend = 0;
252b5132
RH
10619 rel.r_offset = (h->root.u.def.value
10620 + h->root.u.def.section->output_section->vma
10621 + h->root.u.def.section->output_offset);
10622 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
00a97672
RS
10623 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
10624 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
252b5132
RH
10625 }
10626
00a97672
RS
10627 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
10628 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
10629 to the ".got" section. */
252b5132 10630 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
00a97672 10631 || (!htab->vxworks_p && h == htab->root.hgot))
252b5132
RH
10632 sym->st_shndx = SHN_ABS;
10633
b34976b6 10634 return TRUE;
252b5132
RH
10635}
10636
10637/* Finish up the dynamic sections. */
10638
b34976b6 10639static bfd_boolean
57e8b36a 10640elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
252b5132
RH
10641{
10642 bfd * dynobj;
10643 asection * sgot;
10644 asection * sdyn;
10645
10646 dynobj = elf_hash_table (info)->dynobj;
10647
10648 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
229fcec5 10649 BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL);
252b5132
RH
10650 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
10651
10652 if (elf_hash_table (info)->dynamic_sections_created)
10653 {
10654 asection *splt;
10655 Elf32_External_Dyn *dyncon, *dynconend;
229fcec5 10656 struct elf32_arm_link_hash_table *htab;
252b5132 10657
229fcec5 10658 htab = elf32_arm_hash_table (info);
252b5132 10659 splt = bfd_get_section_by_name (dynobj, ".plt");
24a1ba0f 10660 BFD_ASSERT (splt != NULL && sdyn != NULL);
252b5132
RH
10661
10662 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 10663 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9b485d32 10664
252b5132
RH
10665 for (; dyncon < dynconend; dyncon++)
10666 {
10667 Elf_Internal_Dyn dyn;
10668 const char * name;
10669 asection * s;
10670
10671 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
10672
10673 switch (dyn.d_tag)
10674 {
229fcec5
MM
10675 unsigned int type;
10676
252b5132 10677 default:
7a2b07ff
NS
10678 if (htab->vxworks_p
10679 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
10680 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH
10681 break;
10682
229fcec5
MM
10683 case DT_HASH:
10684 name = ".hash";
10685 goto get_vma_if_bpabi;
10686 case DT_STRTAB:
10687 name = ".dynstr";
10688 goto get_vma_if_bpabi;
10689 case DT_SYMTAB:
10690 name = ".dynsym";
10691 goto get_vma_if_bpabi;
c0042f5d
MM
10692 case DT_VERSYM:
10693 name = ".gnu.version";
10694 goto get_vma_if_bpabi;
10695 case DT_VERDEF:
10696 name = ".gnu.version_d";
10697 goto get_vma_if_bpabi;
10698 case DT_VERNEED:
10699 name = ".gnu.version_r";
10700 goto get_vma_if_bpabi;
10701
252b5132
RH
10702 case DT_PLTGOT:
10703 name = ".got";
10704 goto get_vma;
10705 case DT_JMPREL:
00a97672 10706 name = RELOC_SECTION (htab, ".plt");
252b5132
RH
10707 get_vma:
10708 s = bfd_get_section_by_name (output_bfd, name);
10709 BFD_ASSERT (s != NULL);
229fcec5
MM
10710 if (!htab->symbian_p)
10711 dyn.d_un.d_ptr = s->vma;
10712 else
10713 /* In the BPABI, tags in the PT_DYNAMIC section point
10714 at the file offset, not the memory address, for the
10715 convenience of the post linker. */
10716 dyn.d_un.d_ptr = s->filepos;
252b5132
RH
10717 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10718 break;
10719
229fcec5
MM
10720 get_vma_if_bpabi:
10721 if (htab->symbian_p)
10722 goto get_vma;
10723 break;
10724
252b5132 10725 case DT_PLTRELSZ:
00a97672
RS
10726 s = bfd_get_section_by_name (output_bfd,
10727 RELOC_SECTION (htab, ".plt"));
252b5132 10728 BFD_ASSERT (s != NULL);
eea6121a 10729 dyn.d_un.d_val = s->size;
252b5132
RH
10730 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10731 break;
906e58ca 10732
252b5132 10733 case DT_RELSZ:
00a97672 10734 case DT_RELASZ:
229fcec5
MM
10735 if (!htab->symbian_p)
10736 {
10737 /* My reading of the SVR4 ABI indicates that the
10738 procedure linkage table relocs (DT_JMPREL) should be
10739 included in the overall relocs (DT_REL). This is
10740 what Solaris does. However, UnixWare can not handle
10741 that case. Therefore, we override the DT_RELSZ entry
10742 here to make it not include the JMPREL relocs. Since
00a97672 10743 the linker script arranges for .rel(a).plt to follow all
229fcec5
MM
10744 other relocation sections, we don't have to worry
10745 about changing the DT_REL entry. */
00a97672
RS
10746 s = bfd_get_section_by_name (output_bfd,
10747 RELOC_SECTION (htab, ".plt"));
229fcec5
MM
10748 if (s != NULL)
10749 dyn.d_un.d_val -= s->size;
10750 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10751 break;
10752 }
8029a119 10753 /* Fall through. */
229fcec5
MM
10754
10755 case DT_REL:
10756 case DT_RELA:
229fcec5
MM
10757 /* In the BPABI, the DT_REL tag must point at the file
10758 offset, not the VMA, of the first relocation
10759 section. So, we use code similar to that in
10760 elflink.c, but do not check for SHF_ALLOC on the
10761 relcoation section, since relocations sections are
10762 never allocated under the BPABI. The comments above
10763 about Unixware notwithstanding, we include all of the
10764 relocations here. */
10765 if (htab->symbian_p)
10766 {
10767 unsigned int i;
10768 type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
10769 ? SHT_REL : SHT_RELA);
10770 dyn.d_un.d_val = 0;
10771 for (i = 1; i < elf_numsections (output_bfd); i++)
10772 {
906e58ca 10773 Elf_Internal_Shdr *hdr
229fcec5
MM
10774 = elf_elfsections (output_bfd)[i];
10775 if (hdr->sh_type == type)
10776 {
906e58ca 10777 if (dyn.d_tag == DT_RELSZ
229fcec5
MM
10778 || dyn.d_tag == DT_RELASZ)
10779 dyn.d_un.d_val += hdr->sh_size;
de52dba4
AM
10780 else if ((ufile_ptr) hdr->sh_offset
10781 <= dyn.d_un.d_val - 1)
229fcec5
MM
10782 dyn.d_un.d_val = hdr->sh_offset;
10783 }
10784 }
10785 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
10786 }
252b5132 10787 break;
88f7bcd5
NC
10788
10789 /* Set the bottom bit of DT_INIT/FINI if the
10790 corresponding function is Thumb. */
10791 case DT_INIT:
10792 name = info->init_function;
10793 goto get_sym;
10794 case DT_FINI:
10795 name = info->fini_function;
10796 get_sym:
10797 /* If it wasn't set by elf_bfd_final_link
4cc11e76 10798 then there is nothing to adjust. */
88f7bcd5
NC
10799 if (dyn.d_un.d_val != 0)
10800 {
10801 struct elf_link_hash_entry * eh;
10802
10803 eh = elf_link_hash_lookup (elf_hash_table (info), name,
b34976b6 10804 FALSE, FALSE, TRUE);
906e58ca 10805 if (eh != NULL
88f7bcd5
NC
10806 && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC)
10807 {
10808 dyn.d_un.d_val |= 1;
b34976b6 10809 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
88f7bcd5
NC
10810 }
10811 }
10812 break;
252b5132
RH
10813 }
10814 }
10815
24a1ba0f 10816 /* Fill in the first entry in the procedure linkage table. */
e5a52504 10817 if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size)
f7a74f8c 10818 {
00a97672
RS
10819 const bfd_vma *plt0_entry;
10820 bfd_vma got_address, plt_address, got_displacement;
10821
10822 /* Calculate the addresses of the GOT and PLT. */
10823 got_address = sgot->output_section->vma + sgot->output_offset;
10824 plt_address = splt->output_section->vma + splt->output_offset;
10825
10826 if (htab->vxworks_p)
10827 {
10828 /* The VxWorks GOT is relocated by the dynamic linker.
10829 Therefore, we must emit relocations rather than simply
10830 computing the values now. */
10831 Elf_Internal_Rela rel;
10832
10833 plt0_entry = elf32_arm_vxworks_exec_plt0_entry;
52ab56c2
PB
10834 put_arm_insn (htab, output_bfd, plt0_entry[0],
10835 splt->contents + 0);
10836 put_arm_insn (htab, output_bfd, plt0_entry[1],
10837 splt->contents + 4);
10838 put_arm_insn (htab, output_bfd, plt0_entry[2],
10839 splt->contents + 8);
00a97672
RS
10840 bfd_put_32 (output_bfd, got_address, splt->contents + 12);
10841
8029a119 10842 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
00a97672
RS
10843 rel.r_offset = plt_address + 12;
10844 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
10845 rel.r_addend = 0;
10846 SWAP_RELOC_OUT (htab) (output_bfd, &rel,
10847 htab->srelplt2->contents);
10848 }
10849 else
10850 {
10851 got_displacement = got_address - (plt_address + 16);
10852
10853 plt0_entry = elf32_arm_plt0_entry;
52ab56c2
PB
10854 put_arm_insn (htab, output_bfd, plt0_entry[0],
10855 splt->contents + 0);
10856 put_arm_insn (htab, output_bfd, plt0_entry[1],
10857 splt->contents + 4);
10858 put_arm_insn (htab, output_bfd, plt0_entry[2],
10859 splt->contents + 8);
10860 put_arm_insn (htab, output_bfd, plt0_entry[3],
10861 splt->contents + 12);
5e681ec4 10862
5e681ec4 10863#ifdef FOUR_WORD_PLT
00a97672
RS
10864 /* The displacement value goes in the otherwise-unused
10865 last word of the second entry. */
10866 bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
5e681ec4 10867#else
00a97672 10868 bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
5e681ec4 10869#endif
00a97672 10870 }
f7a74f8c 10871 }
252b5132
RH
10872
10873 /* UnixWare sets the entsize of .plt to 4, although that doesn't
10874 really seem like the right value. */
74541ad4
AM
10875 if (splt->output_section->owner == output_bfd)
10876 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
00a97672
RS
10877
10878 if (htab->vxworks_p && !info->shared && htab->splt->size > 0)
10879 {
10880 /* Correct the .rel(a).plt.unloaded relocations. They will have
10881 incorrect symbol indexes. */
10882 int num_plts;
eed62c48 10883 unsigned char *p;
00a97672
RS
10884
10885 num_plts = ((htab->splt->size - htab->plt_header_size)
10886 / htab->plt_entry_size);
10887 p = htab->srelplt2->contents + RELOC_SIZE (htab);
10888
10889 for (; num_plts; num_plts--)
10890 {
10891 Elf_Internal_Rela rel;
10892
10893 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
10894 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
10895 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
10896 p += RELOC_SIZE (htab);
10897
10898 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
10899 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
10900 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
10901 p += RELOC_SIZE (htab);
10902 }
10903 }
252b5132
RH
10904 }
10905
10906 /* Fill in the first three entries in the global offset table. */
229fcec5 10907 if (sgot)
252b5132 10908 {
229fcec5
MM
10909 if (sgot->size > 0)
10910 {
10911 if (sdyn == NULL)
10912 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
10913 else
10914 bfd_put_32 (output_bfd,
10915 sdyn->output_section->vma + sdyn->output_offset,
10916 sgot->contents);
10917 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
10918 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
10919 }
252b5132 10920
229fcec5
MM
10921 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
10922 }
252b5132 10923
b34976b6 10924 return TRUE;
252b5132
RH
10925}
10926
ba96a88f 10927static void
57e8b36a 10928elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
ba96a88f 10929{
9b485d32 10930 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
e489d0ae 10931 struct elf32_arm_link_hash_table *globals;
ba96a88f
NC
10932
10933 i_ehdrp = elf_elfheader (abfd);
10934
94a3258f
PB
10935 if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
10936 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
10937 else
10938 i_ehdrp->e_ident[EI_OSABI] = 0;
ba96a88f 10939 i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
e489d0ae 10940
93204d3a
PB
10941 if (link_info)
10942 {
10943 globals = elf32_arm_hash_table (link_info);
10944 if (globals->byteswap_code)
10945 i_ehdrp->e_flags |= EF_ARM_BE8;
10946 }
ba96a88f
NC
10947}
10948
99e4ae17 10949static enum elf_reloc_type_class
57e8b36a 10950elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
99e4ae17 10951{
f51e552e 10952 switch ((int) ELF32_R_TYPE (rela->r_info))
99e4ae17
AJ
10953 {
10954 case R_ARM_RELATIVE:
10955 return reloc_class_relative;
10956 case R_ARM_JUMP_SLOT:
10957 return reloc_class_plt;
10958 case R_ARM_COPY:
10959 return reloc_class_copy;
10960 default:
10961 return reloc_class_normal;
10962 }
10963}
10964
e16bb312
NC
10965/* Set the right machine number for an Arm ELF file. */
10966
10967static bfd_boolean
57e8b36a 10968elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
e16bb312
NC
10969{
10970 if (hdr->sh_type == SHT_NOTE)
10971 *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
10972
10973 return TRUE;
10974}
10975
e489d0ae 10976static void
57e8b36a 10977elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
e16bb312 10978{
5a6c6817 10979 bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
e16bb312
NC
10980}
10981
40a18ebd
NC
10982/* Return TRUE if this is an unwinding table entry. */
10983
10984static bfd_boolean
10985is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
10986{
0112cd26
NC
10987 return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind)
10988 || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once));
40a18ebd
NC
10989}
10990
10991
10992/* Set the type and flags for an ARM section. We do this by
10993 the section name, which is a hack, but ought to work. */
10994
10995static bfd_boolean
10996elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
10997{
10998 const char * name;
10999
11000 name = bfd_get_section_name (abfd, sec);
11001
11002 if (is_arm_elf_unwind_section_name (abfd, name))
11003 {
11004 hdr->sh_type = SHT_ARM_EXIDX;
11005 hdr->sh_flags |= SHF_LINK_ORDER;
11006 }
11007 return TRUE;
11008}
11009
6dc132d9
L
11010/* Handle an ARM specific section when reading an object file. This is
11011 called when bfd_section_from_shdr finds a section with an unknown
11012 type. */
40a18ebd
NC
11013
11014static bfd_boolean
11015elf32_arm_section_from_shdr (bfd *abfd,
11016 Elf_Internal_Shdr * hdr,
6dc132d9
L
11017 const char *name,
11018 int shindex)
40a18ebd
NC
11019{
11020 /* There ought to be a place to keep ELF backend specific flags, but
11021 at the moment there isn't one. We just keep track of the
11022 sections by their name, instead. Fortunately, the ABI gives
11023 names for all the ARM specific sections, so we will probably get
11024 away with this. */
11025 switch (hdr->sh_type)
11026 {
11027 case SHT_ARM_EXIDX:
0951f019
RE
11028 case SHT_ARM_PREEMPTMAP:
11029 case SHT_ARM_ATTRIBUTES:
40a18ebd
NC
11030 break;
11031
11032 default:
11033 return FALSE;
11034 }
11035
6dc132d9 11036 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
40a18ebd
NC
11037 return FALSE;
11038
11039 return TRUE;
11040}
e489d0ae 11041
8e3de13a
NC
11042/* A structure used to record a list of sections, independently
11043 of the next and prev fields in the asection structure. */
11044typedef struct section_list
11045{
11046 asection * sec;
11047 struct section_list * next;
11048 struct section_list * prev;
11049}
11050section_list;
11051
11052/* Unfortunately we need to keep a list of sections for which
11053 an _arm_elf_section_data structure has been allocated. This
11054 is because it is possible for functions like elf32_arm_write_section
11055 to be called on a section which has had an elf_data_structure
11056 allocated for it (and so the used_by_bfd field is valid) but
11057 for which the ARM extended version of this structure - the
11058 _arm_elf_section_data structure - has not been allocated. */
11059static section_list * sections_with_arm_elf_section_data = NULL;
11060
11061static void
957c6e41 11062record_section_with_arm_elf_section_data (asection * sec)
8e3de13a
NC
11063{
11064 struct section_list * entry;
11065
957c6e41 11066 entry = bfd_malloc (sizeof (* entry));
8e3de13a
NC
11067 if (entry == NULL)
11068 return;
11069 entry->sec = sec;
11070 entry->next = sections_with_arm_elf_section_data;
11071 entry->prev = NULL;
11072 if (entry->next != NULL)
11073 entry->next->prev = entry;
11074 sections_with_arm_elf_section_data = entry;
11075}
11076
44444f50
NC
11077static struct section_list *
11078find_arm_elf_section_entry (asection * sec)
8e3de13a
NC
11079{
11080 struct section_list * entry;
bd4aae00 11081 static struct section_list * last_entry = NULL;
8e3de13a 11082
bd4aae00
NC
11083 /* This is a short cut for the typical case where the sections are added
11084 to the sections_with_arm_elf_section_data list in forward order and
11085 then looked up here in backwards order. This makes a real difference
11086 to the ld-srec/sec64k.exp linker test. */
44444f50 11087 entry = sections_with_arm_elf_section_data;
bd4aae00
NC
11088 if (last_entry != NULL)
11089 {
11090 if (last_entry->sec == sec)
44444f50
NC
11091 entry = last_entry;
11092 else if (last_entry->next != NULL
11093 && last_entry->next->sec == sec)
11094 entry = last_entry->next;
bd4aae00 11095 }
44444f50
NC
11096
11097 for (; entry; entry = entry->next)
8e3de13a 11098 if (entry->sec == sec)
44444f50 11099 break;
bd4aae00 11100
44444f50
NC
11101 if (entry)
11102 /* Record the entry prior to this one - it is the entry we are most
11103 likely to want to locate next time. Also this way if we have been
11104 called from unrecord_section_with_arm_elf_section_data() we will not
11105 be caching a pointer that is about to be freed. */
11106 last_entry = entry->prev;
11107
11108 return entry;
11109}
11110
11111static _arm_elf_section_data *
11112get_arm_elf_section_data (asection * sec)
11113{
11114 struct section_list * entry;
11115
11116 entry = find_arm_elf_section_entry (sec);
11117
11118 if (entry)
11119 return elf32_arm_section_data (entry->sec);
11120 else
11121 return NULL;
8e3de13a
NC
11122}
11123
11124static void
11125unrecord_section_with_arm_elf_section_data (asection * sec)
11126{
11127 struct section_list * entry;
11128
44444f50
NC
11129 entry = find_arm_elf_section_entry (sec);
11130
11131 if (entry)
11132 {
11133 if (entry->prev != NULL)
11134 entry->prev->next = entry->next;
11135 if (entry->next != NULL)
11136 entry->next->prev = entry->prev;
11137 if (entry == sections_with_arm_elf_section_data)
11138 sections_with_arm_elf_section_data = entry->next;
11139 free (entry);
11140 }
8e3de13a
NC
11141}
11142
e489d0ae 11143
4e617b1e
PB
11144typedef struct
11145{
11146 void *finfo;
11147 struct bfd_link_info *info;
91a5743d
PB
11148 asection *sec;
11149 int sec_shndx;
4e617b1e
PB
11150 bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *,
11151 asection *, struct elf_link_hash_entry *);
11152} output_arch_syminfo;
11153
11154enum map_symbol_type
11155{
11156 ARM_MAP_ARM,
11157 ARM_MAP_THUMB,
11158 ARM_MAP_DATA
11159};
11160
11161
7413f23f 11162/* Output a single mapping symbol. */
4e617b1e
PB
11163
11164static bfd_boolean
7413f23f
DJ
11165elf32_arm_output_map_sym (output_arch_syminfo *osi,
11166 enum map_symbol_type type,
11167 bfd_vma offset)
4e617b1e
PB
11168{
11169 static const char *names[3] = {"$a", "$t", "$d"};
11170 struct elf32_arm_link_hash_table *htab;
11171 Elf_Internal_Sym sym;
11172
11173 htab = elf32_arm_hash_table (osi->info);
91a5743d
PB
11174 sym.st_value = osi->sec->output_section->vma
11175 + osi->sec->output_offset
11176 + offset;
4e617b1e
PB
11177 sym.st_size = 0;
11178 sym.st_other = 0;
11179 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
91a5743d
PB
11180 sym.st_shndx = osi->sec_shndx;
11181 if (!osi->func (osi->finfo, names[type], &sym, osi->sec, NULL))
4e617b1e
PB
11182 return FALSE;
11183 return TRUE;
11184}
11185
11186
11187/* Output mapping symbols for PLT entries associated with H. */
11188
11189static bfd_boolean
11190elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf)
11191{
11192 output_arch_syminfo *osi = (output_arch_syminfo *) inf;
11193 struct elf32_arm_link_hash_table *htab;
11194 struct elf32_arm_link_hash_entry *eh;
11195 bfd_vma addr;
11196
11197 htab = elf32_arm_hash_table (osi->info);
11198
11199 if (h->root.type == bfd_link_hash_indirect)
11200 return TRUE;
11201
11202 if (h->root.type == bfd_link_hash_warning)
11203 /* When warning symbols are created, they **replace** the "real"
11204 entry in the hash table, thus we never get to see the real
11205 symbol in a hash traversal. So look at it now. */
11206 h = (struct elf_link_hash_entry *) h->root.u.i.link;
11207
11208 if (h->plt.offset == (bfd_vma) -1)
11209 return TRUE;
11210
11211 eh = (struct elf32_arm_link_hash_entry *) h;
11212 addr = h->plt.offset;
11213 if (htab->symbian_p)
11214 {
7413f23f 11215 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
4e617b1e 11216 return FALSE;
7413f23f 11217 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4))
4e617b1e
PB
11218 return FALSE;
11219 }
11220 else if (htab->vxworks_p)
11221 {
7413f23f 11222 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
4e617b1e 11223 return FALSE;
7413f23f 11224 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
4e617b1e 11225 return FALSE;
7413f23f 11226 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 12))
4e617b1e 11227 return FALSE;
7413f23f 11228 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 20))
4e617b1e
PB
11229 return FALSE;
11230 }
11231 else
11232 {
bd97cb95
DJ
11233 bfd_signed_vma thumb_refs;
11234
11235 thumb_refs = eh->plt_thumb_refcount;
11236 if (!htab->use_blx)
11237 thumb_refs += eh->plt_maybe_thumb_refcount;
4e617b1e 11238
bd97cb95 11239 if (thumb_refs > 0)
4e617b1e 11240 {
7413f23f 11241 if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr - 4))
4e617b1e
PB
11242 return FALSE;
11243 }
11244#ifdef FOUR_WORD_PLT
7413f23f 11245 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
4e617b1e 11246 return FALSE;
7413f23f 11247 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12))
4e617b1e
PB
11248 return FALSE;
11249#else
906e58ca 11250 /* A three-word PLT with no Thumb thunk contains only Arm code,
4e617b1e
PB
11251 so only need to output a mapping symbol for the first PLT entry and
11252 entries with thumb thunks. */
bd97cb95 11253 if (thumb_refs > 0 || addr == 20)
4e617b1e 11254 {
7413f23f 11255 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
4e617b1e
PB
11256 return FALSE;
11257 }
11258#endif
11259 }
11260
11261 return TRUE;
11262}
11263
7413f23f
DJ
11264/* Output a single local symbol for a generated stub. */
11265
11266static bfd_boolean
11267elf32_arm_output_stub_sym (output_arch_syminfo *osi, const char *name,
11268 bfd_vma offset, bfd_vma size)
11269{
11270 struct elf32_arm_link_hash_table *htab;
11271 Elf_Internal_Sym sym;
11272
11273 htab = elf32_arm_hash_table (osi->info);
11274 sym.st_value = osi->sec->output_section->vma
11275 + osi->sec->output_offset
11276 + offset;
11277 sym.st_size = size;
11278 sym.st_other = 0;
11279 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
11280 sym.st_shndx = osi->sec_shndx;
11281 if (!osi->func (osi->finfo, name, &sym, osi->sec, NULL))
11282 return FALSE;
11283 return TRUE;
11284}
4e617b1e 11285
da5938a2 11286static bfd_boolean
8029a119
NC
11287arm_map_one_stub (struct bfd_hash_entry * gen_entry,
11288 void * in_arg)
da5938a2
NC
11289{
11290 struct elf32_arm_stub_hash_entry *stub_entry;
11291 struct bfd_link_info *info;
11292 struct elf32_arm_link_hash_table *htab;
11293 asection *stub_sec;
11294 bfd_vma addr;
7413f23f 11295 char *stub_name;
9a008db3 11296 output_arch_syminfo *osi;
da5938a2
NC
11297
11298 /* Massage our args to the form they really have. */
11299 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
9a008db3 11300 osi = (output_arch_syminfo *) in_arg;
da5938a2 11301
da5938a2
NC
11302 info = osi->info;
11303
11304 htab = elf32_arm_hash_table (info);
11305 stub_sec = stub_entry->stub_sec;
11306
11307 /* Ensure this stub is attached to the current section being
7413f23f 11308 processed. */
da5938a2
NC
11309 if (stub_sec != osi->sec)
11310 return TRUE;
11311
7413f23f
DJ
11312 addr = (bfd_vma) stub_entry->stub_offset;
11313 stub_name = stub_entry->output_name;
da5938a2 11314
7413f23f
DJ
11315 switch (stub_entry->stub_type)
11316 {
da5938a2 11317 case arm_stub_long_branch:
7413f23f 11318 if (!elf32_arm_output_stub_sym (osi, stub_name, addr, 8))
da5938a2 11319 return FALSE;
7413f23f
DJ
11320 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
11321 return FALSE;
11322 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4))
da5938a2
NC
11323 return FALSE;
11324 break;
11325 case arm_thumb_v4t_stub_long_branch:
7413f23f
DJ
11326 if (!elf32_arm_output_stub_sym (osi, stub_name, addr, 12))
11327 return FALSE;
11328 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
da5938a2 11329 return FALSE;
7413f23f 11330 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
da5938a2
NC
11331 return FALSE;
11332 break;
11333 case arm_thumb_thumb_stub_long_branch:
3dccd7b7 11334 if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, 16))
da5938a2 11335 return FALSE;
7413f23f
DJ
11336 if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr))
11337 return FALSE;
11338 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12))
da5938a2
NC
11339 return FALSE;
11340 break;
11341 case arm_thumb_arm_v4t_stub_long_branch:
3dccd7b7 11342 if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, 20))
7413f23f
DJ
11343 return FALSE;
11344 if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr))
da5938a2 11345 return FALSE;
7413f23f 11346 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 8))
da5938a2 11347 return FALSE;
7413f23f 11348 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 16))
da5938a2
NC
11349 return FALSE;
11350 break;
c820be07
NC
11351 case arm_thumb_arm_v4t_stub_short_branch:
11352 if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1, 8))
11353 return FALSE;
11354 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 4))
11355 return FALSE;
11356 break;
da5938a2 11357 case arm_stub_pic_long_branch:
7413f23f
DJ
11358 if (!elf32_arm_output_stub_sym (osi, stub_name, addr, 12))
11359 return FALSE;
11360 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
da5938a2 11361 return FALSE;
7413f23f 11362 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
da5938a2
NC
11363 return FALSE;
11364 break;
11365 default:
11366 BFD_FAIL ();
7413f23f 11367 }
da5938a2
NC
11368
11369 return TRUE;
11370}
11371
91a5743d 11372/* Output mapping symbols for linker generated sections. */
4e617b1e
PB
11373
11374static bfd_boolean
11375elf32_arm_output_arch_local_syms (bfd *output_bfd,
906e58ca
NC
11376 struct bfd_link_info *info,
11377 void *finfo,
11378 bfd_boolean (*func) (void *, const char *,
11379 Elf_Internal_Sym *,
11380 asection *,
11381 struct elf_link_hash_entry *))
4e617b1e
PB
11382{
11383 output_arch_syminfo osi;
11384 struct elf32_arm_link_hash_table *htab;
91a5743d
PB
11385 bfd_vma offset;
11386 bfd_size_type size;
4e617b1e
PB
11387
11388 htab = elf32_arm_hash_table (info);
906e58ca 11389 check_use_blx (htab);
91a5743d 11390
4e617b1e
PB
11391 osi.finfo = finfo;
11392 osi.info = info;
11393 osi.func = func;
906e58ca 11394
91a5743d
PB
11395 /* ARM->Thumb glue. */
11396 if (htab->arm_glue_size > 0)
11397 {
11398 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11399 ARM2THUMB_GLUE_SECTION_NAME);
11400
11401 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11402 (output_bfd, osi.sec->output_section);
11403 if (info->shared || htab->root.is_relocatable_executable
11404 || htab->pic_veneer)
11405 size = ARM2THUMB_PIC_GLUE_SIZE;
11406 else if (htab->use_blx)
11407 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
11408 else
11409 size = ARM2THUMB_STATIC_GLUE_SIZE;
4e617b1e 11410
91a5743d
PB
11411 for (offset = 0; offset < htab->arm_glue_size; offset += size)
11412 {
7413f23f
DJ
11413 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset);
11414 elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, offset + size - 4);
91a5743d
PB
11415 }
11416 }
11417
11418 /* Thumb->ARM glue. */
11419 if (htab->thumb_glue_size > 0)
11420 {
11421 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11422 THUMB2ARM_GLUE_SECTION_NAME);
11423
11424 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11425 (output_bfd, osi.sec->output_section);
11426 size = THUMB2ARM_GLUE_SIZE;
11427
11428 for (offset = 0; offset < htab->thumb_glue_size; offset += size)
11429 {
7413f23f
DJ
11430 elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, offset);
11431 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset + 4);
91a5743d
PB
11432 }
11433 }
11434
845b51d6
PB
11435 /* ARMv4 BX veneers. */
11436 if (htab->bx_glue_size > 0)
11437 {
11438 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11439 ARM_BX_GLUE_SECTION_NAME);
11440
11441 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11442 (output_bfd, osi.sec->output_section);
11443
7413f23f 11444 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0);
845b51d6
PB
11445 }
11446
8029a119
NC
11447 /* Long calls stubs. */
11448 if (htab->stub_bfd && htab->stub_bfd->sections)
11449 {
da5938a2 11450 asection* stub_sec;
8029a119 11451
da5938a2
NC
11452 for (stub_sec = htab->stub_bfd->sections;
11453 stub_sec != NULL;
8029a119
NC
11454 stub_sec = stub_sec->next)
11455 {
11456 /* Ignore non-stub sections. */
11457 if (!strstr (stub_sec->name, STUB_SUFFIX))
11458 continue;
da5938a2 11459
8029a119 11460 osi.sec = stub_sec;
da5938a2 11461
8029a119
NC
11462 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11463 (output_bfd, osi.sec->output_section);
da5938a2 11464
8029a119
NC
11465 bfd_hash_traverse (&htab->stub_hash_table, arm_map_one_stub, &osi);
11466 }
11467 }
da5938a2 11468
91a5743d
PB
11469 /* Finally, output mapping symbols for the PLT. */
11470 if (!htab->splt || htab->splt->size == 0)
11471 return TRUE;
11472
11473 osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
8029a119 11474 htab->splt->output_section);
91a5743d 11475 osi.sec = htab->splt;
4e617b1e
PB
11476 /* Output mapping symbols for the plt header. SymbianOS does not have a
11477 plt header. */
11478 if (htab->vxworks_p)
11479 {
11480 /* VxWorks shared libraries have no PLT header. */
11481 if (!info->shared)
11482 {
7413f23f 11483 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
4e617b1e 11484 return FALSE;
7413f23f 11485 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12))
4e617b1e
PB
11486 return FALSE;
11487 }
11488 }
11489 else if (!htab->symbian_p)
11490 {
7413f23f 11491 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
4e617b1e
PB
11492 return FALSE;
11493#ifndef FOUR_WORD_PLT
7413f23f 11494 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 16))
4e617b1e
PB
11495 return FALSE;
11496#endif
11497 }
11498
11499 elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi);
11500 return TRUE;
11501}
11502
e489d0ae
PB
11503/* Allocate target specific section data. */
11504
11505static bfd_boolean
11506elf32_arm_new_section_hook (bfd *abfd, asection *sec)
11507{
f592407e
AM
11508 if (!sec->used_by_bfd)
11509 {
11510 _arm_elf_section_data *sdata;
11511 bfd_size_type amt = sizeof (*sdata);
e489d0ae 11512
f592407e
AM
11513 sdata = bfd_zalloc (abfd, amt);
11514 if (sdata == NULL)
11515 return FALSE;
11516 sec->used_by_bfd = sdata;
11517 }
e489d0ae 11518
957c6e41 11519 record_section_with_arm_elf_section_data (sec);
8e3de13a 11520
e489d0ae
PB
11521 return _bfd_elf_new_section_hook (abfd, sec);
11522}
11523
11524
11525/* Used to order a list of mapping symbols by address. */
11526
11527static int
11528elf32_arm_compare_mapping (const void * a, const void * b)
11529{
7f6a71ff
JM
11530 const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a;
11531 const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b;
11532
11533 if (amap->vma > bmap->vma)
11534 return 1;
11535 else if (amap->vma < bmap->vma)
11536 return -1;
11537 else if (amap->type > bmap->type)
11538 /* Ensure results do not depend on the host qsort for objects with
11539 multiple mapping symbols at the same address by sorting on type
11540 after vma. */
11541 return 1;
11542 else if (amap->type < bmap->type)
11543 return -1;
11544 else
11545 return 0;
e489d0ae
PB
11546}
11547
11548
11549/* Do code byteswapping. Return FALSE afterwards so that the section is
11550 written out as normal. */
11551
11552static bfd_boolean
c7b8f16e 11553elf32_arm_write_section (bfd *output_bfd,
8029a119
NC
11554 struct bfd_link_info *link_info,
11555 asection *sec,
e489d0ae
PB
11556 bfd_byte *contents)
11557{
c7b8f16e 11558 int mapcount, errcount;
8e3de13a 11559 _arm_elf_section_data *arm_data;
c7b8f16e 11560 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
e489d0ae 11561 elf32_arm_section_map *map;
c7b8f16e 11562 elf32_vfp11_erratum_list *errnode;
e489d0ae
PB
11563 bfd_vma ptr;
11564 bfd_vma end;
c7b8f16e 11565 bfd_vma offset = sec->output_section->vma + sec->output_offset;
e489d0ae
PB
11566 bfd_byte tmp;
11567 int i;
57e8b36a 11568
8e3de13a
NC
11569 /* If this section has not been allocated an _arm_elf_section_data
11570 structure then we cannot record anything. */
11571 arm_data = get_arm_elf_section_data (sec);
11572 if (arm_data == NULL)
11573 return FALSE;
11574
11575 mapcount = arm_data->mapcount;
11576 map = arm_data->map;
c7b8f16e
JB
11577 errcount = arm_data->erratumcount;
11578
11579 if (errcount != 0)
11580 {
11581 unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0;
11582
11583 for (errnode = arm_data->erratumlist; errnode != 0;
11584 errnode = errnode->next)
11585 {
11586 bfd_vma index = errnode->vma - offset;
11587
11588 switch (errnode->type)
11589 {
11590 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
11591 {
11592 bfd_vma branch_to_veneer;
11593 /* Original condition code of instruction, plus bit mask for
11594 ARM B instruction. */
11595 unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000)
11596 | 0x0a000000;
11597
11598 /* The instruction is before the label. */
11599 index -= 4;
11600
11601 /* Above offset included in -4 below. */
11602 branch_to_veneer = errnode->u.b.veneer->vma
11603 - errnode->vma - 4;
11604
11605 if ((signed) branch_to_veneer < -(1 << 25)
11606 || (signed) branch_to_veneer >= (1 << 25))
11607 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
11608 "range"), output_bfd);
11609
11610 insn |= (branch_to_veneer >> 2) & 0xffffff;
11611 contents[endianflip ^ index] = insn & 0xff;
11612 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
11613 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
11614 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
11615 }
11616 break;
11617
11618 case VFP11_ERRATUM_ARM_VENEER:
11619 {
11620 bfd_vma branch_from_veneer;
11621 unsigned int insn;
11622
11623 /* Take size of veneer into account. */
11624 branch_from_veneer = errnode->u.v.branch->vma
11625 - errnode->vma - 12;
11626
11627 if ((signed) branch_from_veneer < -(1 << 25)
11628 || (signed) branch_from_veneer >= (1 << 25))
11629 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
11630 "range"), output_bfd);
11631
11632 /* Original instruction. */
11633 insn = errnode->u.v.branch->u.b.vfp_insn;
11634 contents[endianflip ^ index] = insn & 0xff;
11635 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
11636 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
11637 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
11638
11639 /* Branch back to insn after original insn. */
11640 insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff);
11641 contents[endianflip ^ (index + 4)] = insn & 0xff;
11642 contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff;
11643 contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff;
11644 contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff;
11645 }
11646 break;
11647
11648 default:
11649 abort ();
11650 }
11651 }
11652 }
e489d0ae
PB
11653
11654 if (mapcount == 0)
11655 return FALSE;
11656
c7b8f16e 11657 if (globals->byteswap_code)
e489d0ae 11658 {
c7b8f16e 11659 qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
57e8b36a 11660
c7b8f16e
JB
11661 ptr = map[0].vma;
11662 for (i = 0; i < mapcount; i++)
11663 {
11664 if (i == mapcount - 1)
11665 end = sec->size;
11666 else
11667 end = map[i + 1].vma;
e489d0ae 11668
c7b8f16e 11669 switch (map[i].type)
e489d0ae 11670 {
c7b8f16e
JB
11671 case 'a':
11672 /* Byte swap code words. */
11673 while (ptr + 3 < end)
11674 {
11675 tmp = contents[ptr];
11676 contents[ptr] = contents[ptr + 3];
11677 contents[ptr + 3] = tmp;
11678 tmp = contents[ptr + 1];
11679 contents[ptr + 1] = contents[ptr + 2];
11680 contents[ptr + 2] = tmp;
11681 ptr += 4;
11682 }
11683 break;
e489d0ae 11684
c7b8f16e
JB
11685 case 't':
11686 /* Byte swap code halfwords. */
11687 while (ptr + 1 < end)
11688 {
11689 tmp = contents[ptr];
11690 contents[ptr] = contents[ptr + 1];
11691 contents[ptr + 1] = tmp;
11692 ptr += 2;
11693 }
11694 break;
11695
11696 case 'd':
11697 /* Leave data alone. */
11698 break;
11699 }
11700 ptr = end;
11701 }
e489d0ae 11702 }
8e3de13a 11703
93204d3a 11704 free (map);
8e3de13a 11705 arm_data->mapcount = 0;
c7b8f16e 11706 arm_data->mapsize = 0;
8e3de13a
NC
11707 arm_data->map = NULL;
11708 unrecord_section_with_arm_elf_section_data (sec);
11709
e489d0ae
PB
11710 return FALSE;
11711}
11712
957c6e41
NC
11713static void
11714unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED,
11715 asection * sec,
11716 void * ignore ATTRIBUTE_UNUSED)
11717{
11718 unrecord_section_with_arm_elf_section_data (sec);
11719}
11720
11721static bfd_boolean
11722elf32_arm_close_and_cleanup (bfd * abfd)
11723{
b25e3d87
L
11724 if (abfd->sections)
11725 bfd_map_over_sections (abfd,
11726 unrecord_section_via_map_over_sections,
11727 NULL);
957c6e41
NC
11728
11729 return _bfd_elf_close_and_cleanup (abfd);
11730}
11731
b25e3d87
L
11732static bfd_boolean
11733elf32_arm_bfd_free_cached_info (bfd * abfd)
11734{
11735 if (abfd->sections)
11736 bfd_map_over_sections (abfd,
11737 unrecord_section_via_map_over_sections,
11738 NULL);
11739
11740 return _bfd_free_cached_info (abfd);
11741}
11742
b7693d02
DJ
11743/* Display STT_ARM_TFUNC symbols as functions. */
11744
11745static void
11746elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
11747 asymbol *asym)
11748{
11749 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
11750
11751 if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC)
11752 elfsym->symbol.flags |= BSF_FUNCTION;
11753}
11754
0beaef2b
PB
11755
11756/* Mangle thumb function symbols as we read them in. */
11757
8384fb8f 11758static bfd_boolean
0beaef2b
PB
11759elf32_arm_swap_symbol_in (bfd * abfd,
11760 const void *psrc,
11761 const void *pshn,
11762 Elf_Internal_Sym *dst)
11763{
8384fb8f
AM
11764 if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
11765 return FALSE;
0beaef2b
PB
11766
11767 /* New EABI objects mark thumb function symbols by setting the low bit of
11768 the address. Turn these into STT_ARM_TFUNC. */
11769 if (ELF_ST_TYPE (dst->st_info) == STT_FUNC
11770 && (dst->st_value & 1))
11771 {
11772 dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
11773 dst->st_value &= ~(bfd_vma) 1;
11774 }
8384fb8f 11775 return TRUE;
0beaef2b
PB
11776}
11777
11778
11779/* Mangle thumb function symbols as we write them out. */
11780
11781static void
11782elf32_arm_swap_symbol_out (bfd *abfd,
11783 const Elf_Internal_Sym *src,
11784 void *cdst,
11785 void *shndx)
11786{
11787 Elf_Internal_Sym newsym;
11788
11789 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
11790 of the address set, as per the new EABI. We do this unconditionally
11791 because objcopy does not set the elf header flags until after
11792 it writes out the symbol table. */
11793 if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC)
11794 {
11795 newsym = *src;
11796 newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
0fa3dcad
PB
11797 if (newsym.st_shndx != SHN_UNDEF)
11798 {
11799 /* Do this only for defined symbols. At link type, the static
11800 linker will simulate the work of dynamic linker of resolving
11801 symbols and will carry over the thumbness of found symbols to
11802 the output symbol table. It's not clear how it happens, but
b0fead2b 11803 the thumbness of undefined symbols can well be different at
0fa3dcad
PB
11804 runtime, and writing '1' for them will be confusing for users
11805 and possibly for dynamic linker itself.
11806 */
11807 newsym.st_value |= 1;
11808 }
906e58ca 11809
0beaef2b
PB
11810 src = &newsym;
11811 }
11812 bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
11813}
11814
b294bdf8
MM
11815/* Add the PT_ARM_EXIDX program header. */
11816
11817static bfd_boolean
906e58ca 11818elf32_arm_modify_segment_map (bfd *abfd,
b294bdf8
MM
11819 struct bfd_link_info *info ATTRIBUTE_UNUSED)
11820{
11821 struct elf_segment_map *m;
11822 asection *sec;
11823
11824 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
11825 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
11826 {
11827 /* If there is already a PT_ARM_EXIDX header, then we do not
11828 want to add another one. This situation arises when running
11829 "strip"; the input binary already has the header. */
11830 m = elf_tdata (abfd)->segment_map;
11831 while (m && m->p_type != PT_ARM_EXIDX)
11832 m = m->next;
11833 if (!m)
11834 {
11835 m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
11836 if (m == NULL)
11837 return FALSE;
11838 m->p_type = PT_ARM_EXIDX;
11839 m->count = 1;
11840 m->sections[0] = sec;
11841
11842 m->next = elf_tdata (abfd)->segment_map;
11843 elf_tdata (abfd)->segment_map = m;
11844 }
11845 }
11846
11847 return TRUE;
11848}
11849
11850/* We may add a PT_ARM_EXIDX program header. */
11851
11852static int
a6b96beb
AM
11853elf32_arm_additional_program_headers (bfd *abfd,
11854 struct bfd_link_info *info ATTRIBUTE_UNUSED)
b294bdf8
MM
11855{
11856 asection *sec;
11857
11858 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
11859 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
11860 return 1;
11861 else
11862 return 0;
11863}
11864
fcb93ecf 11865/* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
906e58ca 11866
fcb93ecf
PB
11867static bfd_boolean
11868elf32_arm_is_function_type (unsigned int type)
11869{
11870 return (type == STT_FUNC) || (type == STT_ARM_TFUNC);
11871}
11872
0beaef2b 11873/* We use this to override swap_symbol_in and swap_symbol_out. */
906e58ca
NC
11874const struct elf_size_info elf32_arm_size_info =
11875{
0beaef2b
PB
11876 sizeof (Elf32_External_Ehdr),
11877 sizeof (Elf32_External_Phdr),
11878 sizeof (Elf32_External_Shdr),
11879 sizeof (Elf32_External_Rel),
11880 sizeof (Elf32_External_Rela),
11881 sizeof (Elf32_External_Sym),
11882 sizeof (Elf32_External_Dyn),
11883 sizeof (Elf_External_Note),
11884 4,
11885 1,
11886 32, 2,
11887 ELFCLASS32, EV_CURRENT,
11888 bfd_elf32_write_out_phdrs,
11889 bfd_elf32_write_shdrs_and_ehdr,
1489a3a0 11890 bfd_elf32_checksum_contents,
0beaef2b
PB
11891 bfd_elf32_write_relocs,
11892 elf32_arm_swap_symbol_in,
11893 elf32_arm_swap_symbol_out,
11894 bfd_elf32_slurp_reloc_table,
11895 bfd_elf32_slurp_symbol_table,
11896 bfd_elf32_swap_dyn_in,
11897 bfd_elf32_swap_dyn_out,
11898 bfd_elf32_swap_reloc_in,
11899 bfd_elf32_swap_reloc_out,
11900 bfd_elf32_swap_reloca_in,
11901 bfd_elf32_swap_reloca_out
11902};
11903
252b5132
RH
11904#define ELF_ARCH bfd_arch_arm
11905#define ELF_MACHINE_CODE EM_ARM
d0facd1b
NC
11906#ifdef __QNXTARGET__
11907#define ELF_MAXPAGESIZE 0x1000
11908#else
f21f3fe0 11909#define ELF_MAXPAGESIZE 0x8000
d0facd1b 11910#endif
b1342370 11911#define ELF_MINPAGESIZE 0x1000
24718e3b 11912#define ELF_COMMONPAGESIZE 0x1000
252b5132 11913
ba93b8ac
DJ
11914#define bfd_elf32_mkobject elf32_arm_mkobject
11915
99e4ae17
AJ
11916#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
11917#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
252b5132
RH
11918#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
11919#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
11920#define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
906e58ca 11921#define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free
dc810e39 11922#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
157090f7 11923#define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
252b5132 11924#define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
4ab527b0 11925#define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
e489d0ae 11926#define bfd_elf32_new_section_hook elf32_arm_new_section_hook
3c9458e9 11927#define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
957c6e41 11928#define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
b25e3d87 11929#define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
252b5132
RH
11930
11931#define elf_backend_get_symbol_type elf32_arm_get_symbol_type
11932#define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
6a5bb875 11933#define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
252b5132
RH
11934#define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
11935#define elf_backend_check_relocs elf32_arm_check_relocs
dc810e39 11936#define elf_backend_relocate_section elf32_arm_relocate_section
e489d0ae 11937#define elf_backend_write_section elf32_arm_write_section
252b5132 11938#define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
5e681ec4 11939#define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
252b5132
RH
11940#define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
11941#define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
11942#define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
74541ad4 11943#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
ba96a88f 11944#define elf_backend_post_process_headers elf32_arm_post_process_headers
99e4ae17 11945#define elf_backend_reloc_type_class elf32_arm_reloc_type_class
c178919b 11946#define elf_backend_object_p elf32_arm_object_p
e16bb312 11947#define elf_backend_section_flags elf32_arm_section_flags
40a18ebd
NC
11948#define elf_backend_fake_sections elf32_arm_fake_sections
11949#define elf_backend_section_from_shdr elf32_arm_section_from_shdr
e16bb312 11950#define elf_backend_final_write_processing elf32_arm_final_write_processing
5e681ec4 11951#define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
b7693d02 11952#define elf_backend_symbol_processing elf32_arm_symbol_processing
0beaef2b 11953#define elf_backend_size_info elf32_arm_size_info
b294bdf8 11954#define elf_backend_modify_segment_map elf32_arm_modify_segment_map
906e58ca
NC
11955#define elf_backend_additional_program_headers elf32_arm_additional_program_headers
11956#define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms
11957#define elf_backend_begin_write_processing elf32_arm_begin_write_processing
11958#define elf_backend_is_function_type elf32_arm_is_function_type
11959
11960#define elf_backend_can_refcount 1
11961#define elf_backend_can_gc_sections 1
11962#define elf_backend_plt_readonly 1
11963#define elf_backend_want_got_plt 1
11964#define elf_backend_want_plt_sym 0
11965#define elf_backend_may_use_rel_p 1
11966#define elf_backend_may_use_rela_p 0
4e7fd91e 11967#define elf_backend_default_use_rela_p 0
252b5132 11968
04f7c78d 11969#define elf_backend_got_header_size 12
04f7c78d 11970
906e58ca
NC
11971#undef elf_backend_obj_attrs_vendor
11972#define elf_backend_obj_attrs_vendor "aeabi"
11973#undef elf_backend_obj_attrs_section
11974#define elf_backend_obj_attrs_section ".ARM.attributes"
11975#undef elf_backend_obj_attrs_arg_type
11976#define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
11977#undef elf_backend_obj_attrs_section_type
104d59d1
JM
11978#define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
11979
252b5132 11980#include "elf32-target.h"
7f266840 11981
906e58ca 11982/* VxWorks Targets. */
4e7fd91e 11983
906e58ca 11984#undef TARGET_LITTLE_SYM
4e7fd91e 11985#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
906e58ca 11986#undef TARGET_LITTLE_NAME
4e7fd91e 11987#define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
906e58ca 11988#undef TARGET_BIG_SYM
4e7fd91e 11989#define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
906e58ca 11990#undef TARGET_BIG_NAME
4e7fd91e
PB
11991#define TARGET_BIG_NAME "elf32-bigarm-vxworks"
11992
11993/* Like elf32_arm_link_hash_table_create -- but overrides
11994 appropriately for VxWorks. */
906e58ca 11995
4e7fd91e
PB
11996static struct bfd_link_hash_table *
11997elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
11998{
11999 struct bfd_link_hash_table *ret;
12000
12001 ret = elf32_arm_link_hash_table_create (abfd);
12002 if (ret)
12003 {
12004 struct elf32_arm_link_hash_table *htab
00a97672 12005 = (struct elf32_arm_link_hash_table *) ret;
4e7fd91e 12006 htab->use_rel = 0;
00a97672 12007 htab->vxworks_p = 1;
4e7fd91e
PB
12008 }
12009 return ret;
906e58ca 12010}
4e7fd91e 12011
00a97672
RS
12012static void
12013elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
12014{
12015 elf32_arm_final_write_processing (abfd, linker);
12016 elf_vxworks_final_write_processing (abfd, linker);
12017}
12018
906e58ca 12019#undef elf32_bed
4e7fd91e
PB
12020#define elf32_bed elf32_arm_vxworks_bed
12021
906e58ca
NC
12022#undef bfd_elf32_bfd_link_hash_table_create
12023#define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create
12024#undef elf_backend_add_symbol_hook
12025#define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
12026#undef elf_backend_final_write_processing
12027#define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing
12028#undef elf_backend_emit_relocs
12029#define elf_backend_emit_relocs elf_vxworks_emit_relocs
4e7fd91e 12030
906e58ca 12031#undef elf_backend_may_use_rel_p
00a97672 12032#define elf_backend_may_use_rel_p 0
906e58ca 12033#undef elf_backend_may_use_rela_p
00a97672 12034#define elf_backend_may_use_rela_p 1
906e58ca 12035#undef elf_backend_default_use_rela_p
00a97672 12036#define elf_backend_default_use_rela_p 1
906e58ca 12037#undef elf_backend_want_plt_sym
00a97672 12038#define elf_backend_want_plt_sym 1
906e58ca 12039#undef ELF_MAXPAGESIZE
00a97672 12040#define ELF_MAXPAGESIZE 0x1000
4e7fd91e
PB
12041
12042#include "elf32-target.h"
12043
12044
906e58ca 12045/* Symbian OS Targets. */
7f266840 12046
906e58ca 12047#undef TARGET_LITTLE_SYM
7f266840 12048#define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
906e58ca 12049#undef TARGET_LITTLE_NAME
7f266840 12050#define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
906e58ca 12051#undef TARGET_BIG_SYM
7f266840 12052#define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
906e58ca 12053#undef TARGET_BIG_NAME
7f266840
DJ
12054#define TARGET_BIG_NAME "elf32-bigarm-symbian"
12055
12056/* Like elf32_arm_link_hash_table_create -- but overrides
12057 appropriately for Symbian OS. */
906e58ca 12058
7f266840
DJ
12059static struct bfd_link_hash_table *
12060elf32_arm_symbian_link_hash_table_create (bfd *abfd)
12061{
12062 struct bfd_link_hash_table *ret;
12063
12064 ret = elf32_arm_link_hash_table_create (abfd);
12065 if (ret)
12066 {
12067 struct elf32_arm_link_hash_table *htab
12068 = (struct elf32_arm_link_hash_table *)ret;
12069 /* There is no PLT header for Symbian OS. */
12070 htab->plt_header_size = 0;
95720a86
DJ
12071 /* The PLT entries are each one instruction and one word. */
12072 htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry);
7f266840 12073 htab->symbian_p = 1;
33bfe774
JB
12074 /* Symbian uses armv5t or above, so use_blx is always true. */
12075 htab->use_blx = 1;
67687978 12076 htab->root.is_relocatable_executable = 1;
7f266840
DJ
12077 }
12078 return ret;
906e58ca 12079}
7f266840 12080
b35d266b 12081static const struct bfd_elf_special_section
551b43fd 12082elf32_arm_symbian_special_sections[] =
7f266840 12083{
5cd3778d
MM
12084 /* In a BPABI executable, the dynamic linking sections do not go in
12085 the loadable read-only segment. The post-linker may wish to
12086 refer to these sections, but they are not part of the final
12087 program image. */
0112cd26
NC
12088 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 },
12089 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 },
12090 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 },
12091 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 },
12092 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 },
5cd3778d
MM
12093 /* These sections do not need to be writable as the SymbianOS
12094 postlinker will arrange things so that no dynamic relocation is
12095 required. */
0112cd26
NC
12096 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC },
12097 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC },
12098 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
12099 { NULL, 0, 0, 0, 0 }
7f266840
DJ
12100};
12101
c3c76620 12102static void
906e58ca 12103elf32_arm_symbian_begin_write_processing (bfd *abfd,
a4fd1a8e 12104 struct bfd_link_info *link_info)
c3c76620
MM
12105{
12106 /* BPABI objects are never loaded directly by an OS kernel; they are
12107 processed by a postlinker first, into an OS-specific format. If
12108 the D_PAGED bit is set on the file, BFD will align segments on
12109 page boundaries, so that an OS can directly map the file. With
12110 BPABI objects, that just results in wasted space. In addition,
12111 because we clear the D_PAGED bit, map_sections_to_segments will
12112 recognize that the program headers should not be mapped into any
12113 loadable segment. */
12114 abfd->flags &= ~D_PAGED;
906e58ca 12115 elf32_arm_begin_write_processing (abfd, link_info);
c3c76620 12116}
7f266840
DJ
12117
12118static bfd_boolean
906e58ca 12119elf32_arm_symbian_modify_segment_map (bfd *abfd,
b294bdf8 12120 struct bfd_link_info *info)
7f266840
DJ
12121{
12122 struct elf_segment_map *m;
12123 asection *dynsec;
12124
7f266840
DJ
12125 /* BPABI shared libraries and executables should have a PT_DYNAMIC
12126 segment. However, because the .dynamic section is not marked
12127 with SEC_LOAD, the generic ELF code will not create such a
12128 segment. */
12129 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
12130 if (dynsec)
12131 {
8ded5a0f
AM
12132 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
12133 if (m->p_type == PT_DYNAMIC)
12134 break;
12135
12136 if (m == NULL)
12137 {
12138 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
12139 m->next = elf_tdata (abfd)->segment_map;
12140 elf_tdata (abfd)->segment_map = m;
12141 }
7f266840
DJ
12142 }
12143
b294bdf8
MM
12144 /* Also call the generic arm routine. */
12145 return elf32_arm_modify_segment_map (abfd, info);
7f266840
DJ
12146}
12147
95720a86
DJ
12148/* Return address for Ith PLT stub in section PLT, for relocation REL
12149 or (bfd_vma) -1 if it should not be included. */
12150
12151static bfd_vma
12152elf32_arm_symbian_plt_sym_val (bfd_vma i, const asection *plt,
12153 const arelent *rel ATTRIBUTE_UNUSED)
12154{
12155 return plt->vma + 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry) * i;
12156}
12157
12158
8029a119 12159#undef elf32_bed
7f266840
DJ
12160#define elf32_bed elf32_arm_symbian_bed
12161
12162/* The dynamic sections are not allocated on SymbianOS; the postlinker
12163 will process them and then discard them. */
906e58ca 12164#undef ELF_DYNAMIC_SEC_FLAGS
7f266840
DJ
12165#define ELF_DYNAMIC_SEC_FLAGS \
12166 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
12167
00a97672 12168#undef elf_backend_add_symbol_hook
00a97672 12169#undef elf_backend_emit_relocs
c3c76620 12170
906e58ca
NC
12171#undef bfd_elf32_bfd_link_hash_table_create
12172#define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create
12173#undef elf_backend_special_sections
12174#define elf_backend_special_sections elf32_arm_symbian_special_sections
12175#undef elf_backend_begin_write_processing
12176#define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing
12177#undef elf_backend_final_write_processing
12178#define elf_backend_final_write_processing elf32_arm_final_write_processing
12179
12180#undef elf_backend_modify_segment_map
7f266840
DJ
12181#define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
12182
12183/* There is no .got section for BPABI objects, and hence no header. */
906e58ca 12184#undef elf_backend_got_header_size
7f266840
DJ
12185#define elf_backend_got_header_size 0
12186
12187/* Similarly, there is no .got.plt section. */
906e58ca 12188#undef elf_backend_want_got_plt
7f266840
DJ
12189#define elf_backend_want_got_plt 0
12190
906e58ca 12191#undef elf_backend_plt_sym_val
95720a86
DJ
12192#define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val
12193
906e58ca 12194#undef elf_backend_may_use_rel_p
00a97672 12195#define elf_backend_may_use_rel_p 1
906e58ca 12196#undef elf_backend_may_use_rela_p
00a97672 12197#define elf_backend_may_use_rela_p 0
906e58ca 12198#undef elf_backend_default_use_rela_p
00a97672 12199#define elf_backend_default_use_rela_p 0
906e58ca 12200#undef elf_backend_want_plt_sym
00a97672 12201#define elf_backend_want_plt_sym 0
906e58ca 12202#undef ELF_MAXPAGESIZE
00a97672 12203#define ELF_MAXPAGESIZE 0x8000
4e7fd91e 12204
7f266840 12205#include "elf32-target.h"
This page took 1.882763 seconds and 4 git commands to generate.