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[deliverable/binutils-gdb.git] / bfd / elf32-arm.c
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252b5132 1/* 32-bit ELF support for ARM
ab96bf03 2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
d1f161ea 3 Free Software Foundation, Inc.
252b5132
RH		 4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
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
DJ		 29
30#ifndef NUM_ELEM
31#define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0]))
32#endif
33
00a97672
RS		 34/* Return the relocation section associated with NAME. HTAB is the
35 bfd's elf32_arm_link_hash_entry. */
36#define RELOC_SECTION(HTAB, NAME) \
37 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
38
39/* Return size of a relocation entry. HTAB is the bfd's
40 elf32_arm_link_hash_entry. */
41#define RELOC_SIZE(HTAB) \
42 ((HTAB)->use_rel \
43 ? sizeof (Elf32_External_Rel) \
44 : sizeof (Elf32_External_Rela))
45
46/* Return function to swap relocations in. HTAB is the bfd's
47 elf32_arm_link_hash_entry. */
48#define SWAP_RELOC_IN(HTAB) \
49 ((HTAB)->use_rel \
50 ? bfd_elf32_swap_reloc_in \
51 : bfd_elf32_swap_reloca_in)
52
53/* Return function to swap relocations out. HTAB is the bfd's
54 elf32_arm_link_hash_entry. */
55#define SWAP_RELOC_OUT(HTAB) \
56 ((HTAB)->use_rel \
57 ? bfd_elf32_swap_reloc_out \
58 : bfd_elf32_swap_reloca_out)
59
7f266840
DJ		 60#define elf_info_to_howto 0
61#define elf_info_to_howto_rel elf32_arm_info_to_howto
62
63#define ARM_ELF_ABI_VERSION 0
64#define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
65
24718e3b 66static struct elf_backend_data elf32_arm_vxworks_bed;
00a97672 67
7f266840
DJ		 68/* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
69 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
70 in that slot. */
71
c19d1205 72static reloc_howto_type elf32_arm_howto_table_1[] =
7f266840
DJ		 73{
74 /* No relocation */
75 HOWTO (R_ARM_NONE, /* type */
76 0, /* rightshift */
77 0, /* size (0 = byte, 1 = short, 2 = long) */
78 0, /* bitsize */
79 FALSE, /* pc_relative */
80 0, /* bitpos */
81 complain_overflow_dont,/* complain_on_overflow */
82 bfd_elf_generic_reloc, /* special_function */
83 "R_ARM_NONE", /* name */
84 FALSE, /* partial_inplace */
85 0, /* src_mask */
86 0, /* dst_mask */
87 FALSE), /* pcrel_offset */
88
89 HOWTO (R_ARM_PC24, /* type */
90 2, /* rightshift */
91 2, /* size (0 = byte, 1 = short, 2 = long) */
92 24, /* bitsize */
93 TRUE, /* pc_relative */
94 0, /* bitpos */
95 complain_overflow_signed,/* complain_on_overflow */
96 bfd_elf_generic_reloc, /* special_function */
97 "R_ARM_PC24", /* name */
98 FALSE, /* partial_inplace */
99 0x00ffffff, /* src_mask */
100 0x00ffffff, /* dst_mask */
101 TRUE), /* pcrel_offset */
102
103 /* 32 bit absolute */
104 HOWTO (R_ARM_ABS32, /* type */
105 0, /* rightshift */
106 2, /* size (0 = byte, 1 = short, 2 = long) */
107 32, /* bitsize */
108 FALSE, /* pc_relative */
109 0, /* bitpos */
110 complain_overflow_bitfield,/* complain_on_overflow */
111 bfd_elf_generic_reloc, /* special_function */
112 "R_ARM_ABS32", /* name */
113 FALSE, /* partial_inplace */
114 0xffffffff, /* src_mask */
115 0xffffffff, /* dst_mask */
116 FALSE), /* pcrel_offset */
117
118 /* standard 32bit pc-relative reloc */
119 HOWTO (R_ARM_REL32, /* type */
120 0, /* rightshift */
121 2, /* size (0 = byte, 1 = short, 2 = long) */
122 32, /* bitsize */
123 TRUE, /* pc_relative */
124 0, /* bitpos */
125 complain_overflow_bitfield,/* complain_on_overflow */
126 bfd_elf_generic_reloc, /* special_function */
127 "R_ARM_REL32", /* name */
128 FALSE, /* partial_inplace */
129 0xffffffff, /* src_mask */
130 0xffffffff, /* dst_mask */
131 TRUE), /* pcrel_offset */
132
c19d1205 133 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
4962c51a 134 HOWTO (R_ARM_LDR_PC_G0, /* type */
7f266840
DJ		 135 0, /* rightshift */
136 0, /* size (0 = byte, 1 = short, 2 = long) */
4962c51a
MS		 137 32, /* bitsize */
138 TRUE, /* pc_relative */
7f266840 139 0, /* bitpos */
4962c51a 140 complain_overflow_dont,/* complain_on_overflow */
7f266840 141 bfd_elf_generic_reloc, /* special_function */
4962c51a 142 "R_ARM_LDR_PC_G0", /* name */
7f266840 143 FALSE, /* partial_inplace */
4962c51a
MS		 144 0xffffffff, /* src_mask */
145 0xffffffff, /* dst_mask */
146 TRUE), /* pcrel_offset */
7f266840
DJ		 147
148 /* 16 bit absolute */
149 HOWTO (R_ARM_ABS16, /* type */
150 0, /* rightshift */
151 1, /* size (0 = byte, 1 = short, 2 = long) */
152 16, /* bitsize */
153 FALSE, /* pc_relative */
154 0, /* bitpos */
155 complain_overflow_bitfield,/* complain_on_overflow */
156 bfd_elf_generic_reloc, /* special_function */
157 "R_ARM_ABS16", /* name */
158 FALSE, /* partial_inplace */
159 0x0000ffff, /* src_mask */
160 0x0000ffff, /* dst_mask */
161 FALSE), /* pcrel_offset */
162
163 /* 12 bit absolute */
164 HOWTO (R_ARM_ABS12, /* type */
165 0, /* rightshift */
166 2, /* size (0 = byte, 1 = short, 2 = long) */
167 12, /* bitsize */
168 FALSE, /* pc_relative */
169 0, /* bitpos */
170 complain_overflow_bitfield,/* complain_on_overflow */
171 bfd_elf_generic_reloc, /* special_function */
172 "R_ARM_ABS12", /* name */
173 FALSE, /* partial_inplace */
00a97672
RS		 174 0x00000fff, /* src_mask */
175 0x00000fff, /* dst_mask */
7f266840
DJ		 176 FALSE), /* pcrel_offset */
177
178 HOWTO (R_ARM_THM_ABS5, /* type */
179 6, /* rightshift */
180 1, /* size (0 = byte, 1 = short, 2 = long) */
181 5, /* bitsize */
182 FALSE, /* pc_relative */
183 0, /* bitpos */
184 complain_overflow_bitfield,/* complain_on_overflow */
185 bfd_elf_generic_reloc, /* special_function */
186 "R_ARM_THM_ABS5", /* name */
187 FALSE, /* partial_inplace */
188 0x000007e0, /* src_mask */
189 0x000007e0, /* dst_mask */
190 FALSE), /* pcrel_offset */
191
192 /* 8 bit absolute */
193 HOWTO (R_ARM_ABS8, /* type */
194 0, /* rightshift */
195 0, /* size (0 = byte, 1 = short, 2 = long) */
196 8, /* bitsize */
197 FALSE, /* pc_relative */
198 0, /* bitpos */
199 complain_overflow_bitfield,/* complain_on_overflow */
200 bfd_elf_generic_reloc, /* special_function */
201 "R_ARM_ABS8", /* name */
202 FALSE, /* partial_inplace */
203 0x000000ff, /* src_mask */
204 0x000000ff, /* dst_mask */
205 FALSE), /* pcrel_offset */
206
207 HOWTO (R_ARM_SBREL32, /* type */
208 0, /* rightshift */
209 2, /* size (0 = byte, 1 = short, 2 = long) */
210 32, /* bitsize */
211 FALSE, /* pc_relative */
212 0, /* bitpos */
213 complain_overflow_dont,/* complain_on_overflow */
214 bfd_elf_generic_reloc, /* special_function */
215 "R_ARM_SBREL32", /* name */
216 FALSE, /* partial_inplace */
217 0xffffffff, /* src_mask */
218 0xffffffff, /* dst_mask */
219 FALSE), /* pcrel_offset */
220
c19d1205 221 HOWTO (R_ARM_THM_CALL, /* type */
7f266840
DJ		 222 1, /* rightshift */
223 2, /* size (0 = byte, 1 = short, 2 = long) */
e95de063 224 25, /* bitsize */
7f266840
DJ		 225 TRUE, /* pc_relative */
226 0, /* bitpos */
227 complain_overflow_signed,/* complain_on_overflow */
228 bfd_elf_generic_reloc, /* special_function */
c19d1205 229 "R_ARM_THM_CALL", /* name */
7f266840
DJ		 230 FALSE, /* partial_inplace */
231 0x07ff07ff, /* src_mask */
232 0x07ff07ff, /* dst_mask */
233 TRUE), /* pcrel_offset */
234
235 HOWTO (R_ARM_THM_PC8, /* type */
236 1, /* rightshift */
237 1, /* size (0 = byte, 1 = short, 2 = long) */
238 8, /* bitsize */
239 TRUE, /* pc_relative */
240 0, /* bitpos */
241 complain_overflow_signed,/* complain_on_overflow */
242 bfd_elf_generic_reloc, /* special_function */
243 "R_ARM_THM_PC8", /* name */
244 FALSE, /* partial_inplace */
245 0x000000ff, /* src_mask */
246 0x000000ff, /* dst_mask */
247 TRUE), /* pcrel_offset */
248
c19d1205 249 HOWTO (R_ARM_BREL_ADJ, /* type */
7f266840
DJ		 250 1, /* rightshift */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205
ZW		 252 32, /* bitsize */
253 FALSE, /* pc_relative */
7f266840
DJ		 254 0, /* bitpos */
255 complain_overflow_signed,/* complain_on_overflow */
256 bfd_elf_generic_reloc, /* special_function */
c19d1205 257 "R_ARM_BREL_ADJ", /* name */
7f266840 258 FALSE, /* partial_inplace */
c19d1205
ZW		 259 0xffffffff, /* src_mask */
260 0xffffffff, /* dst_mask */
261 FALSE), /* pcrel_offset */
7f266840
DJ		 262
263 HOWTO (R_ARM_SWI24, /* type */
264 0, /* rightshift */
265 0, /* size (0 = byte, 1 = short, 2 = long) */
266 0, /* bitsize */
267 FALSE, /* pc_relative */
268 0, /* bitpos */
269 complain_overflow_signed,/* complain_on_overflow */
270 bfd_elf_generic_reloc, /* special_function */
271 "R_ARM_SWI24", /* name */
272 FALSE, /* partial_inplace */
273 0x00000000, /* src_mask */
274 0x00000000, /* dst_mask */
275 FALSE), /* pcrel_offset */
276
277 HOWTO (R_ARM_THM_SWI8, /* type */
278 0, /* rightshift */
279 0, /* size (0 = byte, 1 = short, 2 = long) */
280 0, /* bitsize */
281 FALSE, /* pc_relative */
282 0, /* bitpos */
283 complain_overflow_signed,/* complain_on_overflow */
284 bfd_elf_generic_reloc, /* special_function */
285 "R_ARM_SWI8", /* name */
286 FALSE, /* partial_inplace */
287 0x00000000, /* src_mask */
288 0x00000000, /* dst_mask */
289 FALSE), /* pcrel_offset */
290
291 /* BLX instruction for the ARM. */
292 HOWTO (R_ARM_XPC25, /* type */
293 2, /* rightshift */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
295 25, /* bitsize */
296 TRUE, /* pc_relative */
297 0, /* bitpos */
298 complain_overflow_signed,/* complain_on_overflow */
299 bfd_elf_generic_reloc, /* special_function */
300 "R_ARM_XPC25", /* name */
301 FALSE, /* partial_inplace */
302 0x00ffffff, /* src_mask */
303 0x00ffffff, /* dst_mask */
304 TRUE), /* pcrel_offset */
305
306 /* BLX instruction for the Thumb. */
307 HOWTO (R_ARM_THM_XPC22, /* type */
308 2, /* rightshift */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
310 22, /* bitsize */
311 TRUE, /* pc_relative */
312 0, /* bitpos */
313 complain_overflow_signed,/* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_ARM_THM_XPC22", /* name */
316 FALSE, /* partial_inplace */
317 0x07ff07ff, /* src_mask */
318 0x07ff07ff, /* dst_mask */
319 TRUE), /* pcrel_offset */
320
ba93b8ac 321 /* Dynamic TLS relocations. */
7f266840 322
ba93b8ac
DJ		 323 HOWTO (R_ARM_TLS_DTPMOD32, /* type */
324 0, /* rightshift */
325 2, /* size (0 = byte, 1 = short, 2 = long) */
326 32, /* bitsize */
327 FALSE, /* pc_relative */
328 0, /* bitpos */
329 complain_overflow_bitfield,/* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_ARM_TLS_DTPMOD32", /* name */
332 TRUE, /* partial_inplace */
333 0xffffffff, /* src_mask */
334 0xffffffff, /* dst_mask */
335 FALSE), /* pcrel_offset */
7f266840 336
ba93b8ac
DJ		 337 HOWTO (R_ARM_TLS_DTPOFF32, /* type */
338 0, /* rightshift */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
340 32, /* bitsize */
341 FALSE, /* pc_relative */
342 0, /* bitpos */
343 complain_overflow_bitfield,/* complain_on_overflow */
344 bfd_elf_generic_reloc, /* special_function */
345 "R_ARM_TLS_DTPOFF32", /* name */
346 TRUE, /* partial_inplace */
347 0xffffffff, /* src_mask */
348 0xffffffff, /* dst_mask */
349 FALSE), /* pcrel_offset */
7f266840 350
ba93b8ac
DJ		 351 HOWTO (R_ARM_TLS_TPOFF32, /* type */
352 0, /* rightshift */
353 2, /* size (0 = byte, 1 = short, 2 = long) */
354 32, /* bitsize */
355 FALSE, /* pc_relative */
356 0, /* bitpos */
357 complain_overflow_bitfield,/* complain_on_overflow */
358 bfd_elf_generic_reloc, /* special_function */
359 "R_ARM_TLS_TPOFF32", /* name */
360 TRUE, /* partial_inplace */
361 0xffffffff, /* src_mask */
362 0xffffffff, /* dst_mask */
363 FALSE), /* pcrel_offset */
7f266840
DJ		 364
365 /* Relocs used in ARM Linux */
366
367 HOWTO (R_ARM_COPY, /* type */
368 0, /* rightshift */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
370 32, /* bitsize */
371 FALSE, /* pc_relative */
372 0, /* bitpos */
373 complain_overflow_bitfield,/* complain_on_overflow */
374 bfd_elf_generic_reloc, /* special_function */
375 "R_ARM_COPY", /* name */
376 TRUE, /* partial_inplace */
377 0xffffffff, /* src_mask */
378 0xffffffff, /* dst_mask */
379 FALSE), /* pcrel_offset */
380
381 HOWTO (R_ARM_GLOB_DAT, /* type */
382 0, /* rightshift */
383 2, /* size (0 = byte, 1 = short, 2 = long) */
384 32, /* bitsize */
385 FALSE, /* pc_relative */
386 0, /* bitpos */
387 complain_overflow_bitfield,/* complain_on_overflow */
388 bfd_elf_generic_reloc, /* special_function */
389 "R_ARM_GLOB_DAT", /* name */
390 TRUE, /* partial_inplace */
391 0xffffffff, /* src_mask */
392 0xffffffff, /* dst_mask */
393 FALSE), /* pcrel_offset */
394
395 HOWTO (R_ARM_JUMP_SLOT, /* type */
396 0, /* rightshift */
397 2, /* size (0 = byte, 1 = short, 2 = long) */
398 32, /* bitsize */
399 FALSE, /* pc_relative */
400 0, /* bitpos */
401 complain_overflow_bitfield,/* complain_on_overflow */
402 bfd_elf_generic_reloc, /* special_function */
403 "R_ARM_JUMP_SLOT", /* name */
404 TRUE, /* partial_inplace */
405 0xffffffff, /* src_mask */
406 0xffffffff, /* dst_mask */
407 FALSE), /* pcrel_offset */
408
409 HOWTO (R_ARM_RELATIVE, /* type */
410 0, /* rightshift */
411 2, /* size (0 = byte, 1 = short, 2 = long) */
412 32, /* bitsize */
413 FALSE, /* pc_relative */
414 0, /* bitpos */
415 complain_overflow_bitfield,/* complain_on_overflow */
416 bfd_elf_generic_reloc, /* special_function */
417 "R_ARM_RELATIVE", /* name */
418 TRUE, /* partial_inplace */
419 0xffffffff, /* src_mask */
420 0xffffffff, /* dst_mask */
421 FALSE), /* pcrel_offset */
422
c19d1205 423 HOWTO (R_ARM_GOTOFF32, /* type */
7f266840
DJ		 424 0, /* rightshift */
425 2, /* size (0 = byte, 1 = short, 2 = long) */
426 32, /* bitsize */
427 FALSE, /* pc_relative */
428 0, /* bitpos */
429 complain_overflow_bitfield,/* complain_on_overflow */
430 bfd_elf_generic_reloc, /* special_function */
c19d1205 431 "R_ARM_GOTOFF32", /* name */
7f266840
DJ		 432 TRUE, /* partial_inplace */
433 0xffffffff, /* src_mask */
434 0xffffffff, /* dst_mask */
435 FALSE), /* pcrel_offset */
436
437 HOWTO (R_ARM_GOTPC, /* type */
438 0, /* rightshift */
439 2, /* size (0 = byte, 1 = short, 2 = long) */
440 32, /* bitsize */
441 TRUE, /* pc_relative */
442 0, /* bitpos */
443 complain_overflow_bitfield,/* complain_on_overflow */
444 bfd_elf_generic_reloc, /* special_function */
445 "R_ARM_GOTPC", /* name */
446 TRUE, /* partial_inplace */
447 0xffffffff, /* src_mask */
448 0xffffffff, /* dst_mask */
449 TRUE), /* pcrel_offset */
450
451 HOWTO (R_ARM_GOT32, /* type */
452 0, /* rightshift */
453 2, /* size (0 = byte, 1 = short, 2 = long) */
454 32, /* bitsize */
455 FALSE, /* pc_relative */
456 0, /* bitpos */
457 complain_overflow_bitfield,/* complain_on_overflow */
458 bfd_elf_generic_reloc, /* special_function */
459 "R_ARM_GOT32", /* name */
460 TRUE, /* partial_inplace */
461 0xffffffff, /* src_mask */
462 0xffffffff, /* dst_mask */
463 FALSE), /* pcrel_offset */
464
465 HOWTO (R_ARM_PLT32, /* type */
466 2, /* rightshift */
467 2, /* size (0 = byte, 1 = short, 2 = long) */
ce490eda 468 24, /* bitsize */
7f266840
DJ		 469 TRUE, /* pc_relative */
470 0, /* bitpos */
471 complain_overflow_bitfield,/* complain_on_overflow */
472 bfd_elf_generic_reloc, /* special_function */
473 "R_ARM_PLT32", /* name */
ce490eda 474 FALSE, /* partial_inplace */
7f266840
DJ		 475 0x00ffffff, /* src_mask */
476 0x00ffffff, /* dst_mask */
477 TRUE), /* pcrel_offset */
478
479 HOWTO (R_ARM_CALL, /* type */
480 2, /* rightshift */
481 2, /* size (0 = byte, 1 = short, 2 = long) */
482 24, /* bitsize */
483 TRUE, /* pc_relative */
484 0, /* bitpos */
485 complain_overflow_signed,/* complain_on_overflow */
486 bfd_elf_generic_reloc, /* special_function */
487 "R_ARM_CALL", /* name */
488 FALSE, /* partial_inplace */
489 0x00ffffff, /* src_mask */
490 0x00ffffff, /* dst_mask */
491 TRUE), /* pcrel_offset */
492
493 HOWTO (R_ARM_JUMP24, /* type */
494 2, /* rightshift */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
496 24, /* bitsize */
497 TRUE, /* pc_relative */
498 0, /* bitpos */
499 complain_overflow_signed,/* complain_on_overflow */
500 bfd_elf_generic_reloc, /* special_function */
501 "R_ARM_JUMP24", /* name */
502 FALSE, /* partial_inplace */
503 0x00ffffff, /* src_mask */
504 0x00ffffff, /* dst_mask */
505 TRUE), /* pcrel_offset */
506
c19d1205
ZW		 507 HOWTO (R_ARM_THM_JUMP24, /* type */
508 1, /* rightshift */
509 2, /* size (0 = byte, 1 = short, 2 = long) */
510 24, /* bitsize */
511 TRUE, /* pc_relative */
7f266840 512 0, /* bitpos */
c19d1205 513 complain_overflow_signed,/* complain_on_overflow */
7f266840 514 bfd_elf_generic_reloc, /* special_function */
c19d1205 515 "R_ARM_THM_JUMP24", /* name */
7f266840 516 FALSE, /* partial_inplace */
c19d1205
ZW		 517 0x07ff2fff, /* src_mask */
518 0x07ff2fff, /* dst_mask */
519 TRUE), /* pcrel_offset */
7f266840 520
c19d1205 521 HOWTO (R_ARM_BASE_ABS, /* type */
7f266840 522 0, /* rightshift */
c19d1205
ZW		 523 2, /* size (0 = byte, 1 = short, 2 = long) */
524 32, /* bitsize */
7f266840
DJ		 525 FALSE, /* pc_relative */
526 0, /* bitpos */
527 complain_overflow_dont,/* complain_on_overflow */
528 bfd_elf_generic_reloc, /* special_function */
c19d1205 529 "R_ARM_BASE_ABS", /* name */
7f266840 530 FALSE, /* partial_inplace */
c19d1205
ZW		 531 0xffffffff, /* src_mask */
532 0xffffffff, /* dst_mask */
7f266840
DJ		 533 FALSE), /* pcrel_offset */
534
535 HOWTO (R_ARM_ALU_PCREL7_0, /* type */
536 0, /* rightshift */
537 2, /* size (0 = byte, 1 = short, 2 = long) */
538 12, /* bitsize */
539 TRUE, /* pc_relative */
540 0, /* bitpos */
541 complain_overflow_dont,/* complain_on_overflow */
542 bfd_elf_generic_reloc, /* special_function */
543 "R_ARM_ALU_PCREL_7_0", /* name */
544 FALSE, /* partial_inplace */
545 0x00000fff, /* src_mask */
546 0x00000fff, /* dst_mask */
547 TRUE), /* pcrel_offset */
548
549 HOWTO (R_ARM_ALU_PCREL15_8, /* type */
550 0, /* rightshift */
551 2, /* size (0 = byte, 1 = short, 2 = long) */
552 12, /* bitsize */
553 TRUE, /* pc_relative */
554 8, /* bitpos */
555 complain_overflow_dont,/* complain_on_overflow */
556 bfd_elf_generic_reloc, /* special_function */
557 "R_ARM_ALU_PCREL_15_8",/* name */
558 FALSE, /* partial_inplace */
559 0x00000fff, /* src_mask */
560 0x00000fff, /* dst_mask */
561 TRUE), /* pcrel_offset */
562
563 HOWTO (R_ARM_ALU_PCREL23_15, /* type */
564 0, /* rightshift */
565 2, /* size (0 = byte, 1 = short, 2 = long) */
566 12, /* bitsize */
567 TRUE, /* pc_relative */
568 16, /* bitpos */
569 complain_overflow_dont,/* complain_on_overflow */
570 bfd_elf_generic_reloc, /* special_function */
571 "R_ARM_ALU_PCREL_23_15",/* name */
572 FALSE, /* partial_inplace */
573 0x00000fff, /* src_mask */
574 0x00000fff, /* dst_mask */
575 TRUE), /* pcrel_offset */
576
577 HOWTO (R_ARM_LDR_SBREL_11_0, /* type */
578 0, /* rightshift */
579 2, /* size (0 = byte, 1 = short, 2 = long) */
580 12, /* bitsize */
581 FALSE, /* pc_relative */
582 0, /* bitpos */
583 complain_overflow_dont,/* complain_on_overflow */
584 bfd_elf_generic_reloc, /* special_function */
585 "R_ARM_LDR_SBREL_11_0",/* name */
586 FALSE, /* partial_inplace */
587 0x00000fff, /* src_mask */
588 0x00000fff, /* dst_mask */
589 FALSE), /* pcrel_offset */
590
591 HOWTO (R_ARM_ALU_SBREL_19_12, /* type */
592 0, /* rightshift */
593 2, /* size (0 = byte, 1 = short, 2 = long) */
594 8, /* bitsize */
595 FALSE, /* pc_relative */
596 12, /* bitpos */
597 complain_overflow_dont,/* complain_on_overflow */
598 bfd_elf_generic_reloc, /* special_function */
599 "R_ARM_ALU_SBREL_19_12",/* name */
600 FALSE, /* partial_inplace */
601 0x000ff000, /* src_mask */
602 0x000ff000, /* dst_mask */
603 FALSE), /* pcrel_offset */
604
605 HOWTO (R_ARM_ALU_SBREL_27_20, /* type */
606 0, /* rightshift */
607 2, /* size (0 = byte, 1 = short, 2 = long) */
608 8, /* bitsize */
609 FALSE, /* pc_relative */
610 20, /* bitpos */
611 complain_overflow_dont,/* complain_on_overflow */
612 bfd_elf_generic_reloc, /* special_function */
613 "R_ARM_ALU_SBREL_27_20",/* name */
614 FALSE, /* partial_inplace */
615 0x0ff00000, /* src_mask */
616 0x0ff00000, /* dst_mask */
617 FALSE), /* pcrel_offset */
618
619 HOWTO (R_ARM_TARGET1, /* type */
620 0, /* rightshift */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
622 32, /* bitsize */
623 FALSE, /* pc_relative */
624 0, /* bitpos */
625 complain_overflow_dont,/* complain_on_overflow */
626 bfd_elf_generic_reloc, /* special_function */
627 "R_ARM_TARGET1", /* name */
628 FALSE, /* partial_inplace */
629 0xffffffff, /* src_mask */
630 0xffffffff, /* dst_mask */
631 FALSE), /* pcrel_offset */
632
633 HOWTO (R_ARM_ROSEGREL32, /* type */
634 0, /* rightshift */
635 2, /* size (0 = byte, 1 = short, 2 = long) */
636 32, /* bitsize */
637 FALSE, /* pc_relative */
638 0, /* bitpos */
639 complain_overflow_dont,/* complain_on_overflow */
640 bfd_elf_generic_reloc, /* special_function */
641 "R_ARM_ROSEGREL32", /* name */
642 FALSE, /* partial_inplace */
643 0xffffffff, /* src_mask */
644 0xffffffff, /* dst_mask */
645 FALSE), /* pcrel_offset */
646
647 HOWTO (R_ARM_V4BX, /* type */
648 0, /* rightshift */
649 2, /* size (0 = byte, 1 = short, 2 = long) */
650 32, /* bitsize */
651 FALSE, /* pc_relative */
652 0, /* bitpos */
653 complain_overflow_dont,/* complain_on_overflow */
654 bfd_elf_generic_reloc, /* special_function */
655 "R_ARM_V4BX", /* name */
656 FALSE, /* partial_inplace */
657 0xffffffff, /* src_mask */
658 0xffffffff, /* dst_mask */
659 FALSE), /* pcrel_offset */
660
661 HOWTO (R_ARM_TARGET2, /* type */
662 0, /* rightshift */
663 2, /* size (0 = byte, 1 = short, 2 = long) */
664 32, /* bitsize */
665 FALSE, /* pc_relative */
666 0, /* bitpos */
667 complain_overflow_signed,/* complain_on_overflow */
668 bfd_elf_generic_reloc, /* special_function */
669 "R_ARM_TARGET2", /* name */
670 FALSE, /* partial_inplace */
671 0xffffffff, /* src_mask */
672 0xffffffff, /* dst_mask */
673 TRUE), /* pcrel_offset */
674
675 HOWTO (R_ARM_PREL31, /* type */
676 0, /* rightshift */
677 2, /* size (0 = byte, 1 = short, 2 = long) */
678 31, /* bitsize */
679 TRUE, /* pc_relative */
680 0, /* bitpos */
681 complain_overflow_signed,/* complain_on_overflow */
682 bfd_elf_generic_reloc, /* special_function */
683 "R_ARM_PREL31", /* name */
684 FALSE, /* partial_inplace */
685 0x7fffffff, /* src_mask */
686 0x7fffffff, /* dst_mask */
687 TRUE), /* pcrel_offset */
c19d1205
ZW		 688
689 HOWTO (R_ARM_MOVW_ABS_NC, /* type */
690 0, /* rightshift */
691 2, /* size (0 = byte, 1 = short, 2 = long) */
692 16, /* bitsize */
693 FALSE, /* pc_relative */
694 0, /* bitpos */
695 complain_overflow_dont,/* complain_on_overflow */
696 bfd_elf_generic_reloc, /* special_function */
697 "R_ARM_MOVW_ABS_NC", /* name */
698 FALSE, /* partial_inplace */
699 0x0000ffff, /* src_mask */
700 0x0000ffff, /* dst_mask */
701 FALSE), /* pcrel_offset */
702
703 HOWTO (R_ARM_MOVT_ABS, /* type */
704 0, /* rightshift */
705 2, /* size (0 = byte, 1 = short, 2 = long) */
706 16, /* bitsize */
707 FALSE, /* pc_relative */
708 0, /* bitpos */
709 complain_overflow_bitfield,/* complain_on_overflow */
710 bfd_elf_generic_reloc, /* special_function */
711 "R_ARM_MOVT_ABS", /* name */
712 FALSE, /* partial_inplace */
713 0x0000ffff, /* src_mask */
714 0x0000ffff, /* dst_mask */
715 FALSE), /* pcrel_offset */
716
717 HOWTO (R_ARM_MOVW_PREL_NC, /* type */
718 0, /* rightshift */
719 2, /* size (0 = byte, 1 = short, 2 = long) */
720 16, /* bitsize */
721 TRUE, /* pc_relative */
722 0, /* bitpos */
723 complain_overflow_dont,/* complain_on_overflow */
724 bfd_elf_generic_reloc, /* special_function */
725 "R_ARM_MOVW_PREL_NC", /* name */
726 FALSE, /* partial_inplace */
727 0x0000ffff, /* src_mask */
728 0x0000ffff, /* dst_mask */
729 TRUE), /* pcrel_offset */
730
731 HOWTO (R_ARM_MOVT_PREL, /* type */
732 0, /* rightshift */
733 2, /* size (0 = byte, 1 = short, 2 = long) */
734 16, /* bitsize */
735 TRUE, /* pc_relative */
736 0, /* bitpos */
737 complain_overflow_bitfield,/* complain_on_overflow */
738 bfd_elf_generic_reloc, /* special_function */
739 "R_ARM_MOVT_PREL", /* name */
740 FALSE, /* partial_inplace */
741 0x0000ffff, /* src_mask */
742 0x0000ffff, /* dst_mask */
743 TRUE), /* pcrel_offset */
744
745 HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */
746 0, /* rightshift */
747 2, /* size (0 = byte, 1 = short, 2 = long) */
748 16, /* bitsize */
749 FALSE, /* pc_relative */
750 0, /* bitpos */
751 complain_overflow_dont,/* complain_on_overflow */
752 bfd_elf_generic_reloc, /* special_function */
753 "R_ARM_THM_MOVW_ABS_NC",/* name */
754 FALSE, /* partial_inplace */
755 0x040f70ff, /* src_mask */
756 0x040f70ff, /* dst_mask */
757 FALSE), /* pcrel_offset */
758
759 HOWTO (R_ARM_THM_MOVT_ABS, /* type */
760 0, /* rightshift */
761 2, /* size (0 = byte, 1 = short, 2 = long) */
762 16, /* bitsize */
763 FALSE, /* pc_relative */
764 0, /* bitpos */
765 complain_overflow_bitfield,/* complain_on_overflow */
766 bfd_elf_generic_reloc, /* special_function */
767 "R_ARM_THM_MOVT_ABS", /* name */
768 FALSE, /* partial_inplace */
769 0x040f70ff, /* src_mask */
770 0x040f70ff, /* dst_mask */
771 FALSE), /* pcrel_offset */
772
773 HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */
774 0, /* rightshift */
775 2, /* size (0 = byte, 1 = short, 2 = long) */
776 16, /* bitsize */
777 TRUE, /* pc_relative */
778 0, /* bitpos */
779 complain_overflow_dont,/* complain_on_overflow */
780 bfd_elf_generic_reloc, /* special_function */
781 "R_ARM_THM_MOVW_PREL_NC",/* name */
782 FALSE, /* partial_inplace */
783 0x040f70ff, /* src_mask */
784 0x040f70ff, /* dst_mask */
785 TRUE), /* pcrel_offset */
786
787 HOWTO (R_ARM_THM_MOVT_PREL, /* type */
788 0, /* rightshift */
789 2, /* size (0 = byte, 1 = short, 2 = long) */
790 16, /* bitsize */
791 TRUE, /* pc_relative */
792 0, /* bitpos */
793 complain_overflow_bitfield,/* complain_on_overflow */
794 bfd_elf_generic_reloc, /* special_function */
795 "R_ARM_THM_MOVT_PREL", /* name */
796 FALSE, /* partial_inplace */
797 0x040f70ff, /* src_mask */
798 0x040f70ff, /* dst_mask */
799 TRUE), /* pcrel_offset */
800
801 HOWTO (R_ARM_THM_JUMP19, /* type */
802 1, /* rightshift */
803 2, /* size (0 = byte, 1 = short, 2 = long) */
804 19, /* bitsize */
805 TRUE, /* pc_relative */
806 0, /* bitpos */
807 complain_overflow_signed,/* complain_on_overflow */
808 bfd_elf_generic_reloc, /* special_function */
809 "R_ARM_THM_JUMP19", /* name */
810 FALSE, /* partial_inplace */
811 0x043f2fff, /* src_mask */
812 0x043f2fff, /* dst_mask */
813 TRUE), /* pcrel_offset */
814
815 HOWTO (R_ARM_THM_JUMP6, /* type */
816 1, /* rightshift */
817 1, /* size (0 = byte, 1 = short, 2 = long) */
818 6, /* bitsize */
819 TRUE, /* pc_relative */
820 0, /* bitpos */
821 complain_overflow_unsigned,/* complain_on_overflow */
822 bfd_elf_generic_reloc, /* special_function */
823 "R_ARM_THM_JUMP6", /* name */
824 FALSE, /* partial_inplace */
825 0x02f8, /* src_mask */
826 0x02f8, /* dst_mask */
827 TRUE), /* pcrel_offset */
828
829 /* These are declared as 13-bit signed relocations because we can
830 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
831 versa. */
832 HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */
833 0, /* rightshift */
834 2, /* size (0 = byte, 1 = short, 2 = long) */
835 13, /* bitsize */
836 TRUE, /* pc_relative */
837 0, /* bitpos */
2cab6cc3 838 complain_overflow_dont,/* complain_on_overflow */
c19d1205
ZW		 839 bfd_elf_generic_reloc, /* special_function */
840 "R_ARM_THM_ALU_PREL_11_0",/* name */
841 FALSE, /* partial_inplace */
2cab6cc3
MS		 842 0xffffffff, /* src_mask */
843 0xffffffff, /* dst_mask */
c19d1205
ZW		 844 TRUE), /* pcrel_offset */
845
846 HOWTO (R_ARM_THM_PC12, /* type */
847 0, /* rightshift */
848 2, /* size (0 = byte, 1 = short, 2 = long) */
849 13, /* bitsize */
850 TRUE, /* pc_relative */
851 0, /* bitpos */
2cab6cc3 852 complain_overflow_dont,/* complain_on_overflow */
c19d1205
ZW		 853 bfd_elf_generic_reloc, /* special_function */
854 "R_ARM_THM_PC12", /* name */
855 FALSE, /* partial_inplace */
2cab6cc3
MS		 856 0xffffffff, /* src_mask */
857 0xffffffff, /* dst_mask */
c19d1205
ZW		 858 TRUE), /* pcrel_offset */
859
860 HOWTO (R_ARM_ABS32_NOI, /* type */
861 0, /* rightshift */
862 2, /* size (0 = byte, 1 = short, 2 = long) */
863 32, /* bitsize */
864 FALSE, /* pc_relative */
865 0, /* bitpos */
866 complain_overflow_dont,/* complain_on_overflow */
867 bfd_elf_generic_reloc, /* special_function */
868 "R_ARM_ABS32_NOI", /* name */
869 FALSE, /* partial_inplace */
870 0xffffffff, /* src_mask */
871 0xffffffff, /* dst_mask */
872 FALSE), /* pcrel_offset */
873
874 HOWTO (R_ARM_REL32_NOI, /* type */
875 0, /* rightshift */
876 2, /* size (0 = byte, 1 = short, 2 = long) */
877 32, /* bitsize */
878 TRUE, /* pc_relative */
879 0, /* bitpos */
880 complain_overflow_dont,/* complain_on_overflow */
881 bfd_elf_generic_reloc, /* special_function */
882 "R_ARM_REL32_NOI", /* name */
883 FALSE, /* partial_inplace */
884 0xffffffff, /* src_mask */
885 0xffffffff, /* dst_mask */
886 FALSE), /* pcrel_offset */
7f266840 887
4962c51a
MS		 888 /* Group relocations. */
889
890 HOWTO (R_ARM_ALU_PC_G0_NC, /* type */
891 0, /* rightshift */
892 2, /* size (0 = byte, 1 = short, 2 = long) */
893 32, /* bitsize */
894 TRUE, /* pc_relative */
895 0, /* bitpos */
896 complain_overflow_dont,/* complain_on_overflow */
897 bfd_elf_generic_reloc, /* special_function */
898 "R_ARM_ALU_PC_G0_NC", /* name */
899 FALSE, /* partial_inplace */
900 0xffffffff, /* src_mask */
901 0xffffffff, /* dst_mask */
902 TRUE), /* pcrel_offset */
903
904 HOWTO (R_ARM_ALU_PC_G0, /* type */
905 0, /* rightshift */
906 2, /* size (0 = byte, 1 = short, 2 = long) */
907 32, /* bitsize */
908 TRUE, /* pc_relative */
909 0, /* bitpos */
910 complain_overflow_dont,/* complain_on_overflow */
911 bfd_elf_generic_reloc, /* special_function */
912 "R_ARM_ALU_PC_G0", /* name */
913 FALSE, /* partial_inplace */
914 0xffffffff, /* src_mask */
915 0xffffffff, /* dst_mask */
916 TRUE), /* pcrel_offset */
917
918 HOWTO (R_ARM_ALU_PC_G1_NC, /* type */
919 0, /* rightshift */
920 2, /* size (0 = byte, 1 = short, 2 = long) */
921 32, /* bitsize */
922 TRUE, /* pc_relative */
923 0, /* bitpos */
924 complain_overflow_dont,/* complain_on_overflow */
925 bfd_elf_generic_reloc, /* special_function */
926 "R_ARM_ALU_PC_G1_NC", /* name */
927 FALSE, /* partial_inplace */
928 0xffffffff, /* src_mask */
929 0xffffffff, /* dst_mask */
930 TRUE), /* pcrel_offset */
931
932 HOWTO (R_ARM_ALU_PC_G1, /* type */
933 0, /* rightshift */
934 2, /* size (0 = byte, 1 = short, 2 = long) */
935 32, /* bitsize */
936 TRUE, /* pc_relative */
937 0, /* bitpos */
938 complain_overflow_dont,/* complain_on_overflow */
939 bfd_elf_generic_reloc, /* special_function */
940 "R_ARM_ALU_PC_G1", /* name */
941 FALSE, /* partial_inplace */
942 0xffffffff, /* src_mask */
943 0xffffffff, /* dst_mask */
944 TRUE), /* pcrel_offset */
945
946 HOWTO (R_ARM_ALU_PC_G2, /* type */
947 0, /* rightshift */
948 2, /* size (0 = byte, 1 = short, 2 = long) */
949 32, /* bitsize */
950 TRUE, /* pc_relative */
951 0, /* bitpos */
952 complain_overflow_dont,/* complain_on_overflow */
953 bfd_elf_generic_reloc, /* special_function */
954 "R_ARM_ALU_PC_G2", /* name */
955 FALSE, /* partial_inplace */
956 0xffffffff, /* src_mask */
957 0xffffffff, /* dst_mask */
958 TRUE), /* pcrel_offset */
959
960 HOWTO (R_ARM_LDR_PC_G1, /* type */
961 0, /* rightshift */
962 2, /* size (0 = byte, 1 = short, 2 = long) */
963 32, /* bitsize */
964 TRUE, /* pc_relative */
965 0, /* bitpos */
966 complain_overflow_dont,/* complain_on_overflow */
967 bfd_elf_generic_reloc, /* special_function */
968 "R_ARM_LDR_PC_G1", /* name */
969 FALSE, /* partial_inplace */
970 0xffffffff, /* src_mask */
971 0xffffffff, /* dst_mask */
972 TRUE), /* pcrel_offset */
973
974 HOWTO (R_ARM_LDR_PC_G2, /* type */
975 0, /* rightshift */
976 2, /* size (0 = byte, 1 = short, 2 = long) */
977 32, /* bitsize */
978 TRUE, /* pc_relative */
979 0, /* bitpos */
980 complain_overflow_dont,/* complain_on_overflow */
981 bfd_elf_generic_reloc, /* special_function */
982 "R_ARM_LDR_PC_G2", /* name */
983 FALSE, /* partial_inplace */
984 0xffffffff, /* src_mask */
985 0xffffffff, /* dst_mask */
986 TRUE), /* pcrel_offset */
987
988 HOWTO (R_ARM_LDRS_PC_G0, /* type */
989 0, /* rightshift */
990 2, /* size (0 = byte, 1 = short, 2 = long) */
991 32, /* bitsize */
992 TRUE, /* pc_relative */
993 0, /* bitpos */
994 complain_overflow_dont,/* complain_on_overflow */
995 bfd_elf_generic_reloc, /* special_function */
996 "R_ARM_LDRS_PC_G0", /* name */
997 FALSE, /* partial_inplace */
998 0xffffffff, /* src_mask */
999 0xffffffff, /* dst_mask */
1000 TRUE), /* pcrel_offset */
1001
1002 HOWTO (R_ARM_LDRS_PC_G1, /* type */
1003 0, /* rightshift */
1004 2, /* size (0 = byte, 1 = short, 2 = long) */
1005 32, /* bitsize */
1006 TRUE, /* pc_relative */
1007 0, /* bitpos */
1008 complain_overflow_dont,/* complain_on_overflow */
1009 bfd_elf_generic_reloc, /* special_function */
1010 "R_ARM_LDRS_PC_G1", /* name */
1011 FALSE, /* partial_inplace */
1012 0xffffffff, /* src_mask */
1013 0xffffffff, /* dst_mask */
1014 TRUE), /* pcrel_offset */
1015
1016 HOWTO (R_ARM_LDRS_PC_G2, /* type */
1017 0, /* rightshift */
1018 2, /* size (0 = byte, 1 = short, 2 = long) */
1019 32, /* bitsize */
1020 TRUE, /* pc_relative */
1021 0, /* bitpos */
1022 complain_overflow_dont,/* complain_on_overflow */
1023 bfd_elf_generic_reloc, /* special_function */
1024 "R_ARM_LDRS_PC_G2", /* name */
1025 FALSE, /* partial_inplace */
1026 0xffffffff, /* src_mask */
1027 0xffffffff, /* dst_mask */
1028 TRUE), /* pcrel_offset */
1029
1030 HOWTO (R_ARM_LDC_PC_G0, /* type */
1031 0, /* rightshift */
1032 2, /* size (0 = byte, 1 = short, 2 = long) */
1033 32, /* bitsize */
1034 TRUE, /* pc_relative */
1035 0, /* bitpos */
1036 complain_overflow_dont,/* complain_on_overflow */
1037 bfd_elf_generic_reloc, /* special_function */
1038 "R_ARM_LDC_PC_G0", /* name */
1039 FALSE, /* partial_inplace */
1040 0xffffffff, /* src_mask */
1041 0xffffffff, /* dst_mask */
1042 TRUE), /* pcrel_offset */
1043
1044 HOWTO (R_ARM_LDC_PC_G1, /* type */
1045 0, /* rightshift */
1046 2, /* size (0 = byte, 1 = short, 2 = long) */
1047 32, /* bitsize */
1048 TRUE, /* pc_relative */
1049 0, /* bitpos */
1050 complain_overflow_dont,/* complain_on_overflow */
1051 bfd_elf_generic_reloc, /* special_function */
1052 "R_ARM_LDC_PC_G1", /* name */
1053 FALSE, /* partial_inplace */
1054 0xffffffff, /* src_mask */
1055 0xffffffff, /* dst_mask */
1056 TRUE), /* pcrel_offset */
1057
1058 HOWTO (R_ARM_LDC_PC_G2, /* type */
1059 0, /* rightshift */
1060 2, /* size (0 = byte, 1 = short, 2 = long) */
1061 32, /* bitsize */
1062 TRUE, /* pc_relative */
1063 0, /* bitpos */
1064 complain_overflow_dont,/* complain_on_overflow */
1065 bfd_elf_generic_reloc, /* special_function */
1066 "R_ARM_LDC_PC_G2", /* name */
1067 FALSE, /* partial_inplace */
1068 0xffffffff, /* src_mask */
1069 0xffffffff, /* dst_mask */
1070 TRUE), /* pcrel_offset */
1071
1072 HOWTO (R_ARM_ALU_SB_G0_NC, /* type */
1073 0, /* rightshift */
1074 2, /* size (0 = byte, 1 = short, 2 = long) */
1075 32, /* bitsize */
1076 TRUE, /* pc_relative */
1077 0, /* bitpos */
1078 complain_overflow_dont,/* complain_on_overflow */
1079 bfd_elf_generic_reloc, /* special_function */
1080 "R_ARM_ALU_SB_G0_NC", /* name */
1081 FALSE, /* partial_inplace */
1082 0xffffffff, /* src_mask */
1083 0xffffffff, /* dst_mask */
1084 TRUE), /* pcrel_offset */
1085
1086 HOWTO (R_ARM_ALU_SB_G0, /* type */
1087 0, /* rightshift */
1088 2, /* size (0 = byte, 1 = short, 2 = long) */
1089 32, /* bitsize */
1090 TRUE, /* pc_relative */
1091 0, /* bitpos */
1092 complain_overflow_dont,/* complain_on_overflow */
1093 bfd_elf_generic_reloc, /* special_function */
1094 "R_ARM_ALU_SB_G0", /* name */
1095 FALSE, /* partial_inplace */
1096 0xffffffff, /* src_mask */
1097 0xffffffff, /* dst_mask */
1098 TRUE), /* pcrel_offset */
1099
1100 HOWTO (R_ARM_ALU_SB_G1_NC, /* type */
1101 0, /* rightshift */
1102 2, /* size (0 = byte, 1 = short, 2 = long) */
1103 32, /* bitsize */
1104 TRUE, /* pc_relative */
1105 0, /* bitpos */
1106 complain_overflow_dont,/* complain_on_overflow */
1107 bfd_elf_generic_reloc, /* special_function */
1108 "R_ARM_ALU_SB_G1_NC", /* name */
1109 FALSE, /* partial_inplace */
1110 0xffffffff, /* src_mask */
1111 0xffffffff, /* dst_mask */
1112 TRUE), /* pcrel_offset */
1113
1114 HOWTO (R_ARM_ALU_SB_G1, /* type */
1115 0, /* rightshift */
1116 2, /* size (0 = byte, 1 = short, 2 = long) */
1117 32, /* bitsize */
1118 TRUE, /* pc_relative */
1119 0, /* bitpos */
1120 complain_overflow_dont,/* complain_on_overflow */
1121 bfd_elf_generic_reloc, /* special_function */
1122 "R_ARM_ALU_SB_G1", /* name */
1123 FALSE, /* partial_inplace */
1124 0xffffffff, /* src_mask */
1125 0xffffffff, /* dst_mask */
1126 TRUE), /* pcrel_offset */
1127
1128 HOWTO (R_ARM_ALU_SB_G2, /* type */
1129 0, /* rightshift */
1130 2, /* size (0 = byte, 1 = short, 2 = long) */
1131 32, /* bitsize */
1132 TRUE, /* pc_relative */
1133 0, /* bitpos */
1134 complain_overflow_dont,/* complain_on_overflow */
1135 bfd_elf_generic_reloc, /* special_function */
1136 "R_ARM_ALU_SB_G2", /* name */
1137 FALSE, /* partial_inplace */
1138 0xffffffff, /* src_mask */
1139 0xffffffff, /* dst_mask */
1140 TRUE), /* pcrel_offset */
1141
1142 HOWTO (R_ARM_LDR_SB_G0, /* type */
1143 0, /* rightshift */
1144 2, /* size (0 = byte, 1 = short, 2 = long) */
1145 32, /* bitsize */
1146 TRUE, /* pc_relative */
1147 0, /* bitpos */
1148 complain_overflow_dont,/* complain_on_overflow */
1149 bfd_elf_generic_reloc, /* special_function */
1150 "R_ARM_LDR_SB_G0", /* name */
1151 FALSE, /* partial_inplace */
1152 0xffffffff, /* src_mask */
1153 0xffffffff, /* dst_mask */
1154 TRUE), /* pcrel_offset */
1155
1156 HOWTO (R_ARM_LDR_SB_G1, /* type */
1157 0, /* rightshift */
1158 2, /* size (0 = byte, 1 = short, 2 = long) */
1159 32, /* bitsize */
1160 TRUE, /* pc_relative */
1161 0, /* bitpos */
1162 complain_overflow_dont,/* complain_on_overflow */
1163 bfd_elf_generic_reloc, /* special_function */
1164 "R_ARM_LDR_SB_G1", /* name */
1165 FALSE, /* partial_inplace */
1166 0xffffffff, /* src_mask */
1167 0xffffffff, /* dst_mask */
1168 TRUE), /* pcrel_offset */
1169
1170 HOWTO (R_ARM_LDR_SB_G2, /* type */
1171 0, /* rightshift */
1172 2, /* size (0 = byte, 1 = short, 2 = long) */
1173 32, /* bitsize */
1174 TRUE, /* pc_relative */
1175 0, /* bitpos */
1176 complain_overflow_dont,/* complain_on_overflow */
1177 bfd_elf_generic_reloc, /* special_function */
1178 "R_ARM_LDR_SB_G2", /* name */
1179 FALSE, /* partial_inplace */
1180 0xffffffff, /* src_mask */
1181 0xffffffff, /* dst_mask */
1182 TRUE), /* pcrel_offset */
1183
1184 HOWTO (R_ARM_LDRS_SB_G0, /* type */
1185 0, /* rightshift */
1186 2, /* size (0 = byte, 1 = short, 2 = long) */
1187 32, /* bitsize */
1188 TRUE, /* pc_relative */
1189 0, /* bitpos */
1190 complain_overflow_dont,/* complain_on_overflow */
1191 bfd_elf_generic_reloc, /* special_function */
1192 "R_ARM_LDRS_SB_G0", /* name */
1193 FALSE, /* partial_inplace */
1194 0xffffffff, /* src_mask */
1195 0xffffffff, /* dst_mask */
1196 TRUE), /* pcrel_offset */
1197
1198 HOWTO (R_ARM_LDRS_SB_G1, /* type */
1199 0, /* rightshift */
1200 2, /* size (0 = byte, 1 = short, 2 = long) */
1201 32, /* bitsize */
1202 TRUE, /* pc_relative */
1203 0, /* bitpos */
1204 complain_overflow_dont,/* complain_on_overflow */
1205 bfd_elf_generic_reloc, /* special_function */
1206 "R_ARM_LDRS_SB_G1", /* name */
1207 FALSE, /* partial_inplace */
1208 0xffffffff, /* src_mask */
1209 0xffffffff, /* dst_mask */
1210 TRUE), /* pcrel_offset */
1211
1212 HOWTO (R_ARM_LDRS_SB_G2, /* type */
1213 0, /* rightshift */
1214 2, /* size (0 = byte, 1 = short, 2 = long) */
1215 32, /* bitsize */
1216 TRUE, /* pc_relative */
1217 0, /* bitpos */
1218 complain_overflow_dont,/* complain_on_overflow */
1219 bfd_elf_generic_reloc, /* special_function */
1220 "R_ARM_LDRS_SB_G2", /* name */
1221 FALSE, /* partial_inplace */
1222 0xffffffff, /* src_mask */
1223 0xffffffff, /* dst_mask */
1224 TRUE), /* pcrel_offset */
1225
1226 HOWTO (R_ARM_LDC_SB_G0, /* type */
1227 0, /* rightshift */
1228 2, /* size (0 = byte, 1 = short, 2 = long) */
1229 32, /* bitsize */
1230 TRUE, /* pc_relative */
1231 0, /* bitpos */
1232 complain_overflow_dont,/* complain_on_overflow */
1233 bfd_elf_generic_reloc, /* special_function */
1234 "R_ARM_LDC_SB_G0", /* name */
1235 FALSE, /* partial_inplace */
1236 0xffffffff, /* src_mask */
1237 0xffffffff, /* dst_mask */
1238 TRUE), /* pcrel_offset */
1239
1240 HOWTO (R_ARM_LDC_SB_G1, /* type */
1241 0, /* rightshift */
1242 2, /* size (0 = byte, 1 = short, 2 = long) */
1243 32, /* bitsize */
1244 TRUE, /* pc_relative */
1245 0, /* bitpos */
1246 complain_overflow_dont,/* complain_on_overflow */
1247 bfd_elf_generic_reloc, /* special_function */
1248 "R_ARM_LDC_SB_G1", /* name */
1249 FALSE, /* partial_inplace */
1250 0xffffffff, /* src_mask */
1251 0xffffffff, /* dst_mask */
1252 TRUE), /* pcrel_offset */
1253
1254 HOWTO (R_ARM_LDC_SB_G2, /* type */
1255 0, /* rightshift */
1256 2, /* size (0 = byte, 1 = short, 2 = long) */
1257 32, /* bitsize */
1258 TRUE, /* pc_relative */
1259 0, /* bitpos */
1260 complain_overflow_dont,/* complain_on_overflow */
1261 bfd_elf_generic_reloc, /* special_function */
1262 "R_ARM_LDC_SB_G2", /* name */
1263 FALSE, /* partial_inplace */
1264 0xffffffff, /* src_mask */
1265 0xffffffff, /* dst_mask */
1266 TRUE), /* pcrel_offset */
1267
1268 /* End of group relocations. */
c19d1205 1269
c19d1205
ZW		 1270 HOWTO (R_ARM_MOVW_BREL_NC, /* type */
1271 0, /* rightshift */
1272 2, /* size (0 = byte, 1 = short, 2 = long) */
1273 16, /* bitsize */
1274 FALSE, /* pc_relative */
1275 0, /* bitpos */
1276 complain_overflow_dont,/* complain_on_overflow */
1277 bfd_elf_generic_reloc, /* special_function */
1278 "R_ARM_MOVW_BREL_NC", /* name */
1279 FALSE, /* partial_inplace */
1280 0x0000ffff, /* src_mask */
1281 0x0000ffff, /* dst_mask */
1282 FALSE), /* pcrel_offset */
1283
1284 HOWTO (R_ARM_MOVT_BREL, /* type */
1285 0, /* rightshift */
1286 2, /* size (0 = byte, 1 = short, 2 = long) */
1287 16, /* bitsize */
1288 FALSE, /* pc_relative */
1289 0, /* bitpos */
1290 complain_overflow_bitfield,/* complain_on_overflow */
1291 bfd_elf_generic_reloc, /* special_function */
1292 "R_ARM_MOVT_BREL", /* name */
1293 FALSE, /* partial_inplace */
1294 0x0000ffff, /* src_mask */
1295 0x0000ffff, /* dst_mask */
1296 FALSE), /* pcrel_offset */
1297
1298 HOWTO (R_ARM_MOVW_BREL, /* type */
1299 0, /* rightshift */
1300 2, /* size (0 = byte, 1 = short, 2 = long) */
1301 16, /* bitsize */
1302 FALSE, /* pc_relative */
1303 0, /* bitpos */
1304 complain_overflow_dont,/* complain_on_overflow */
1305 bfd_elf_generic_reloc, /* special_function */
1306 "R_ARM_MOVW_BREL", /* name */
1307 FALSE, /* partial_inplace */
1308 0x0000ffff, /* src_mask */
1309 0x0000ffff, /* dst_mask */
1310 FALSE), /* pcrel_offset */
1311
1312 HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */
1313 0, /* rightshift */
1314 2, /* size (0 = byte, 1 = short, 2 = long) */
1315 16, /* bitsize */
1316 FALSE, /* pc_relative */
1317 0, /* bitpos */
1318 complain_overflow_dont,/* complain_on_overflow */
1319 bfd_elf_generic_reloc, /* special_function */
1320 "R_ARM_THM_MOVW_BREL_NC",/* name */
1321 FALSE, /* partial_inplace */
1322 0x040f70ff, /* src_mask */
1323 0x040f70ff, /* dst_mask */
1324 FALSE), /* pcrel_offset */
1325
1326 HOWTO (R_ARM_THM_MOVT_BREL, /* type */
1327 0, /* rightshift */
1328 2, /* size (0 = byte, 1 = short, 2 = long) */
1329 16, /* bitsize */
1330 FALSE, /* pc_relative */
1331 0, /* bitpos */
1332 complain_overflow_bitfield,/* complain_on_overflow */
1333 bfd_elf_generic_reloc, /* special_function */
1334 "R_ARM_THM_MOVT_BREL", /* name */
1335 FALSE, /* partial_inplace */
1336 0x040f70ff, /* src_mask */
1337 0x040f70ff, /* dst_mask */
1338 FALSE), /* pcrel_offset */
1339
1340 HOWTO (R_ARM_THM_MOVW_BREL, /* type */
1341 0, /* rightshift */
1342 2, /* size (0 = byte, 1 = short, 2 = long) */
1343 16, /* bitsize */
1344 FALSE, /* pc_relative */
1345 0, /* bitpos */
1346 complain_overflow_dont,/* complain_on_overflow */
1347 bfd_elf_generic_reloc, /* special_function */
1348 "R_ARM_THM_MOVW_BREL", /* name */
1349 FALSE, /* partial_inplace */
1350 0x040f70ff, /* src_mask */
1351 0x040f70ff, /* dst_mask */
1352 FALSE), /* pcrel_offset */
1353
1354 EMPTY_HOWTO (90), /* unallocated */
1355 EMPTY_HOWTO (91),
1356 EMPTY_HOWTO (92),
1357 EMPTY_HOWTO (93),
1358
1359 HOWTO (R_ARM_PLT32_ABS, /* type */
1360 0, /* rightshift */
1361 2, /* size (0 = byte, 1 = short, 2 = long) */
1362 32, /* bitsize */
1363 FALSE, /* pc_relative */
1364 0, /* bitpos */
1365 complain_overflow_dont,/* complain_on_overflow */
1366 bfd_elf_generic_reloc, /* special_function */
1367 "R_ARM_PLT32_ABS", /* name */
1368 FALSE, /* partial_inplace */
1369 0xffffffff, /* src_mask */
1370 0xffffffff, /* dst_mask */
1371 FALSE), /* pcrel_offset */
1372
1373 HOWTO (R_ARM_GOT_ABS, /* type */
1374 0, /* rightshift */
1375 2, /* size (0 = byte, 1 = short, 2 = long) */
1376 32, /* bitsize */
1377 FALSE, /* pc_relative */
1378 0, /* bitpos */
1379 complain_overflow_dont,/* complain_on_overflow */
1380 bfd_elf_generic_reloc, /* special_function */
1381 "R_ARM_GOT_ABS", /* name */
1382 FALSE, /* partial_inplace */
1383 0xffffffff, /* src_mask */
1384 0xffffffff, /* dst_mask */
1385 FALSE), /* pcrel_offset */
1386
1387 HOWTO (R_ARM_GOT_PREL, /* type */
1388 0, /* rightshift */
1389 2, /* size (0 = byte, 1 = short, 2 = long) */
1390 32, /* bitsize */
1391 TRUE, /* pc_relative */
1392 0, /* bitpos */
1393 complain_overflow_dont, /* complain_on_overflow */
1394 bfd_elf_generic_reloc, /* special_function */
1395 "R_ARM_GOT_PREL", /* name */
1396 FALSE, /* partial_inplace */
1397 0xffffffff, /* src_mask */
1398 0xffffffff, /* dst_mask */
1399 TRUE), /* pcrel_offset */
1400
1401 HOWTO (R_ARM_GOT_BREL12, /* type */
1402 0, /* rightshift */
1403 2, /* size (0 = byte, 1 = short, 2 = long) */
1404 12, /* bitsize */
1405 FALSE, /* pc_relative */
1406 0, /* bitpos */
1407 complain_overflow_bitfield,/* complain_on_overflow */
1408 bfd_elf_generic_reloc, /* special_function */
1409 "R_ARM_GOT_BREL12", /* name */
1410 FALSE, /* partial_inplace */
1411 0x00000fff, /* src_mask */
1412 0x00000fff, /* dst_mask */
1413 FALSE), /* pcrel_offset */
1414
1415 HOWTO (R_ARM_GOTOFF12, /* type */
1416 0, /* rightshift */
1417 2, /* size (0 = byte, 1 = short, 2 = long) */
1418 12, /* bitsize */
1419 FALSE, /* pc_relative */
1420 0, /* bitpos */
1421 complain_overflow_bitfield,/* complain_on_overflow */
1422 bfd_elf_generic_reloc, /* special_function */
1423 "R_ARM_GOTOFF12", /* name */
1424 FALSE, /* partial_inplace */
1425 0x00000fff, /* src_mask */
1426 0x00000fff, /* dst_mask */
1427 FALSE), /* pcrel_offset */
1428
1429 EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */
1430
1431 /* GNU extension to record C++ vtable member usage */
1432 HOWTO (R_ARM_GNU_VTENTRY, /* type */
ba93b8ac
DJ		 1433 0, /* rightshift */
1434 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205 1435 0, /* bitsize */
ba93b8ac
DJ		 1436 FALSE, /* pc_relative */
1437 0, /* bitpos */
c19d1205
ZW		 1438 complain_overflow_dont, /* complain_on_overflow */
1439 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1440 "R_ARM_GNU_VTENTRY", /* name */
1441 FALSE, /* partial_inplace */
1442 0, /* src_mask */
1443 0, /* dst_mask */
1444 FALSE), /* pcrel_offset */
1445
1446 /* GNU extension to record C++ vtable hierarchy */
1447 HOWTO (R_ARM_GNU_VTINHERIT, /* type */
1448 0, /* rightshift */
1449 2, /* size (0 = byte, 1 = short, 2 = long) */
1450 0, /* bitsize */
1451 FALSE, /* pc_relative */
1452 0, /* bitpos */
1453 complain_overflow_dont, /* complain_on_overflow */
1454 NULL, /* special_function */
1455 "R_ARM_GNU_VTINHERIT", /* name */
1456 FALSE, /* partial_inplace */
1457 0, /* src_mask */
1458 0, /* dst_mask */
1459 FALSE), /* pcrel_offset */
1460
1461 HOWTO (R_ARM_THM_JUMP11, /* type */
1462 1, /* rightshift */
1463 1, /* size (0 = byte, 1 = short, 2 = long) */
1464 11, /* bitsize */
1465 TRUE, /* pc_relative */
1466 0, /* bitpos */
1467 complain_overflow_signed, /* complain_on_overflow */
1468 bfd_elf_generic_reloc, /* special_function */
1469 "R_ARM_THM_JUMP11", /* name */
1470 FALSE, /* partial_inplace */
1471 0x000007ff, /* src_mask */
1472 0x000007ff, /* dst_mask */
1473 TRUE), /* pcrel_offset */
1474
1475 HOWTO (R_ARM_THM_JUMP8, /* type */
1476 1, /* rightshift */
1477 1, /* size (0 = byte, 1 = short, 2 = long) */
1478 8, /* bitsize */
1479 TRUE, /* pc_relative */
1480 0, /* bitpos */
1481 complain_overflow_signed, /* complain_on_overflow */
1482 bfd_elf_generic_reloc, /* special_function */
1483 "R_ARM_THM_JUMP8", /* name */
1484 FALSE, /* partial_inplace */
1485 0x000000ff, /* src_mask */
1486 0x000000ff, /* dst_mask */
1487 TRUE), /* pcrel_offset */
ba93b8ac 1488
c19d1205
ZW		 1489 /* TLS relocations */
1490 HOWTO (R_ARM_TLS_GD32, /* type */
ba93b8ac
DJ		 1491 0, /* rightshift */
1492 2, /* size (0 = byte, 1 = short, 2 = long) */
1493 32, /* bitsize */
1494 FALSE, /* pc_relative */
1495 0, /* bitpos */
1496 complain_overflow_bitfield,/* complain_on_overflow */
c19d1205
ZW		 1497 NULL, /* special_function */
1498 "R_ARM_TLS_GD32", /* name */
ba93b8ac
DJ		 1499 TRUE, /* partial_inplace */
1500 0xffffffff, /* src_mask */
1501 0xffffffff, /* dst_mask */
c19d1205 1502 FALSE), /* pcrel_offset */
ba93b8ac 1503
ba93b8ac
DJ		 1504 HOWTO (R_ARM_TLS_LDM32, /* type */
1505 0, /* rightshift */
1506 2, /* size (0 = byte, 1 = short, 2 = long) */
1507 32, /* bitsize */
1508 FALSE, /* pc_relative */
1509 0, /* bitpos */
1510 complain_overflow_bitfield,/* complain_on_overflow */
1511 bfd_elf_generic_reloc, /* special_function */
1512 "R_ARM_TLS_LDM32", /* name */
1513 TRUE, /* partial_inplace */
1514 0xffffffff, /* src_mask */
1515 0xffffffff, /* dst_mask */
c19d1205 1516 FALSE), /* pcrel_offset */
ba93b8ac 1517
c19d1205 1518 HOWTO (R_ARM_TLS_LDO32, /* type */
ba93b8ac
DJ		 1519 0, /* rightshift */
1520 2, /* size (0 = byte, 1 = short, 2 = long) */
1521 32, /* bitsize */
1522 FALSE, /* pc_relative */
1523 0, /* bitpos */
1524 complain_overflow_bitfield,/* complain_on_overflow */
1525 bfd_elf_generic_reloc, /* special_function */
c19d1205 1526 "R_ARM_TLS_LDO32", /* name */
ba93b8ac
DJ		 1527 TRUE, /* partial_inplace */
1528 0xffffffff, /* src_mask */
1529 0xffffffff, /* dst_mask */
c19d1205 1530 FALSE), /* pcrel_offset */
ba93b8ac 1531
ba93b8ac
DJ		 1532 HOWTO (R_ARM_TLS_IE32, /* type */
1533 0, /* rightshift */
1534 2, /* size (0 = byte, 1 = short, 2 = long) */
1535 32, /* bitsize */
1536 FALSE, /* pc_relative */
1537 0, /* bitpos */
1538 complain_overflow_bitfield,/* complain_on_overflow */
1539 NULL, /* special_function */
1540 "R_ARM_TLS_IE32", /* name */
1541 TRUE, /* partial_inplace */
1542 0xffffffff, /* src_mask */
1543 0xffffffff, /* dst_mask */
c19d1205 1544 FALSE), /* pcrel_offset */
7f266840 1545
c19d1205 1546 HOWTO (R_ARM_TLS_LE32, /* type */
7f266840
DJ		 1547 0, /* rightshift */
1548 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205 1549 32, /* bitsize */
7f266840
DJ		 1550 FALSE, /* pc_relative */
1551 0, /* bitpos */
c19d1205
ZW		 1552 complain_overflow_bitfield,/* complain_on_overflow */
1553 bfd_elf_generic_reloc, /* special_function */
1554 "R_ARM_TLS_LE32", /* name */
1555 TRUE, /* partial_inplace */
1556 0xffffffff, /* src_mask */
1557 0xffffffff, /* dst_mask */
1558 FALSE), /* pcrel_offset */
7f266840 1559
c19d1205
ZW		 1560 HOWTO (R_ARM_TLS_LDO12, /* type */
1561 0, /* rightshift */
1562 2, /* size (0 = byte, 1 = short, 2 = long) */
1563 12, /* bitsize */
1564 FALSE, /* pc_relative */
7f266840 1565 0, /* bitpos */
c19d1205 1566 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1567 bfd_elf_generic_reloc, /* special_function */
c19d1205 1568 "R_ARM_TLS_LDO12", /* name */
7f266840 1569 FALSE, /* partial_inplace */
c19d1205
ZW		 1570 0x00000fff, /* src_mask */
1571 0x00000fff, /* dst_mask */
1572 FALSE), /* pcrel_offset */
7f266840 1573
c19d1205
ZW		 1574 HOWTO (R_ARM_TLS_LE12, /* type */
1575 0, /* rightshift */
1576 2, /* size (0 = byte, 1 = short, 2 = long) */
1577 12, /* bitsize */
1578 FALSE, /* pc_relative */
7f266840 1579 0, /* bitpos */
c19d1205 1580 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1581 bfd_elf_generic_reloc, /* special_function */
c19d1205 1582 "R_ARM_TLS_LE12", /* name */
7f266840 1583 FALSE, /* partial_inplace */
c19d1205
ZW		 1584 0x00000fff, /* src_mask */
1585 0x00000fff, /* dst_mask */
1586 FALSE), /* pcrel_offset */
7f266840 1587
c19d1205 1588 HOWTO (R_ARM_TLS_IE12GP, /* type */
7f266840
DJ		 1589 0, /* rightshift */
1590 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205
ZW		 1591 12, /* bitsize */
1592 FALSE, /* pc_relative */
7f266840 1593 0, /* bitpos */
c19d1205 1594 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1595 bfd_elf_generic_reloc, /* special_function */
c19d1205 1596 "R_ARM_TLS_IE12GP", /* name */
7f266840 1597 FALSE, /* partial_inplace */
c19d1205
ZW		 1598 0x00000fff, /* src_mask */
1599 0x00000fff, /* dst_mask */
1600 FALSE), /* pcrel_offset */
1601};
1602
1603/* 112-127 private relocations
1604 128 R_ARM_ME_TOO, obsolete
1605 129-255 unallocated in AAELF.
7f266840 1606
c19d1205
ZW		 1607 249-255 extended, currently unused, relocations: */
1608
4962c51a 1609static reloc_howto_type elf32_arm_howto_table_2[4] =
7f266840
DJ		 1610{
1611 HOWTO (R_ARM_RREL32, /* type */
1612 0, /* rightshift */
1613 0, /* size (0 = byte, 1 = short, 2 = long) */
1614 0, /* bitsize */
1615 FALSE, /* pc_relative */
1616 0, /* bitpos */
1617 complain_overflow_dont,/* complain_on_overflow */
1618 bfd_elf_generic_reloc, /* special_function */
1619 "R_ARM_RREL32", /* name */
1620 FALSE, /* partial_inplace */
1621 0, /* src_mask */
1622 0, /* dst_mask */
1623 FALSE), /* pcrel_offset */
1624
1625 HOWTO (R_ARM_RABS32, /* type */
1626 0, /* rightshift */
1627 0, /* size (0 = byte, 1 = short, 2 = long) */
1628 0, /* bitsize */
1629 FALSE, /* pc_relative */
1630 0, /* bitpos */
1631 complain_overflow_dont,/* complain_on_overflow */
1632 bfd_elf_generic_reloc, /* special_function */
1633 "R_ARM_RABS32", /* name */
1634 FALSE, /* partial_inplace */
1635 0, /* src_mask */
1636 0, /* dst_mask */
1637 FALSE), /* pcrel_offset */
1638
1639 HOWTO (R_ARM_RPC24, /* type */
1640 0, /* rightshift */
1641 0, /* size (0 = byte, 1 = short, 2 = long) */
1642 0, /* bitsize */
1643 FALSE, /* pc_relative */
1644 0, /* bitpos */
1645 complain_overflow_dont,/* complain_on_overflow */
1646 bfd_elf_generic_reloc, /* special_function */
1647 "R_ARM_RPC24", /* name */
1648 FALSE, /* partial_inplace */
1649 0, /* src_mask */
1650 0, /* dst_mask */
1651 FALSE), /* pcrel_offset */
1652
1653 HOWTO (R_ARM_RBASE, /* type */
1654 0, /* rightshift */
1655 0, /* size (0 = byte, 1 = short, 2 = long) */
1656 0, /* bitsize */
1657 FALSE, /* pc_relative */
1658 0, /* bitpos */
1659 complain_overflow_dont,/* complain_on_overflow */
1660 bfd_elf_generic_reloc, /* special_function */
1661 "R_ARM_RBASE", /* name */
1662 FALSE, /* partial_inplace */
1663 0, /* src_mask */
1664 0, /* dst_mask */
1665 FALSE) /* pcrel_offset */
1666};
1667
1668static reloc_howto_type *
1669elf32_arm_howto_from_type (unsigned int r_type)
1670{
c19d1205
ZW		 1671 if (r_type < NUM_ELEM (elf32_arm_howto_table_1))
1672 return &elf32_arm_howto_table_1[r_type];
ba93b8ac 1673
c19d1205
ZW		 1674 if (r_type >= R_ARM_RREL32
1675 && r_type < R_ARM_RREL32 + NUM_ELEM (elf32_arm_howto_table_2))
4962c51a 1676 return &elf32_arm_howto_table_2[r_type - R_ARM_RREL32];
7f266840 1677
c19d1205 1678 return NULL;
7f266840
DJ		 1679}
1680
1681static void
1682elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
1683 Elf_Internal_Rela * elf_reloc)
1684{
1685 unsigned int r_type;
1686
1687 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1688 bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
1689}
1690
1691struct elf32_arm_reloc_map
1692 {
1693 bfd_reloc_code_real_type bfd_reloc_val;
1694 unsigned char elf_reloc_val;
1695 };
1696
1697/* All entries in this list must also be present in elf32_arm_howto_table. */
1698static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
1699 {
1700 {BFD_RELOC_NONE, R_ARM_NONE},
1701 {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
39b41c9c
PB		 1702 {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL},
1703 {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24},
7f266840
DJ		 1704 {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
1705 {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
1706 {BFD_RELOC_32, R_ARM_ABS32},
1707 {BFD_RELOC_32_PCREL, R_ARM_REL32},
1708 {BFD_RELOC_8, R_ARM_ABS8},
1709 {BFD_RELOC_16, R_ARM_ABS16},
1710 {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
1711 {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
c19d1205
ZW		 1712 {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24},
1713 {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL},
1714 {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11},
1715 {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19},
1716 {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8},
1717 {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6},
7f266840
DJ		 1718 {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
1719 {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
1720 {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
c19d1205 1721 {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32},
7f266840
DJ		 1722 {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
1723 {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
1724 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1725 {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1},
1726 {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32},
1727 {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32},
1728 {BFD_RELOC_ARM_PREL31, R_ARM_PREL31},
ba93b8ac
DJ		 1729 {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2},
1730 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1731 {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32},
1732 {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32},
1733 {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32},
1734 {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32},
1735 {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32},
1736 {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32},
1737 {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32},
1738 {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32},
c19d1205
ZW		 1739 {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT},
1740 {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY},
b6895b4f
PB		 1741 {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC},
1742 {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS},
1743 {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC},
1744 {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL},
1745 {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC},
1746 {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS},
1747 {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC},
1748 {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL},
4962c51a
MS		 1749 {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC},
1750 {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0},
1751 {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC},
1752 {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1},
1753 {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2},
1754 {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0},
1755 {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1},
1756 {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2},
1757 {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0},
1758 {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1},
1759 {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2},
1760 {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0},
1761 {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1},
1762 {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2},
1763 {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC},
1764 {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0},
1765 {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC},
1766 {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1},
1767 {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2},
1768 {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0},
1769 {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1},
1770 {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2},
1771 {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0},
1772 {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1},
1773 {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2},
1774 {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0},
1775 {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1},
1776 {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2}
7f266840
DJ		 1777 };
1778
1779static reloc_howto_type *
f1c71a59
ZW		 1780elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1781 bfd_reloc_code_real_type code)
7f266840
DJ		 1782{
1783 unsigned int i;
c19d1205
ZW		 1784 for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
1785 if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
1786 return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
7f266840 1787
c19d1205 1788 return NULL;
7f266840
DJ		 1789}
1790
157090f7
AM		 1791static reloc_howto_type *
1792elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1793 const char *r_name)
1794{
1795 unsigned int i;
1796
1797 for (i = 0;
1798 i < (sizeof (elf32_arm_howto_table_1)
1799 / sizeof (elf32_arm_howto_table_1[0]));
1800 i++)
1801 if (elf32_arm_howto_table_1[i].name != NULL
1802 && strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0)
1803 return &elf32_arm_howto_table_1[i];
1804
1805 for (i = 0;
1806 i < (sizeof (elf32_arm_howto_table_2)
1807 / sizeof (elf32_arm_howto_table_2[0]));
1808 i++)
1809 if (elf32_arm_howto_table_2[i].name != NULL
1810 && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0)
1811 return &elf32_arm_howto_table_2[i];
1812
1813 return NULL;
1814}
1815
7f266840
DJ		 1816/* Support for core dump NOTE sections */
1817static bfd_boolean
f1c71a59 1818elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
7f266840
DJ		 1819{
1820 int offset;
1821 size_t size;
1822
1823 switch (note->descsz)
1824 {
1825 default:
1826 return FALSE;
1827
1828 case 148: /* Linux/ARM 32-bit*/
1829 /* pr_cursig */
1830 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1831
1832 /* pr_pid */
1833 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1834
1835 /* pr_reg */
1836 offset = 72;
1837 size = 72;
1838
1839 break;
1840 }
1841
1842 /* Make a ".reg/999" section. */
1843 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1844 size, note->descpos + offset);
1845}
1846
1847static bfd_boolean
f1c71a59 1848elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
7f266840
DJ		 1849{
1850 switch (note->descsz)
1851 {
1852 default:
1853 return FALSE;
1854
1855 case 124: /* Linux/ARM elf_prpsinfo */
1856 elf_tdata (abfd)->core_program
1857 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1858 elf_tdata (abfd)->core_command
1859 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1860 }
1861
1862 /* Note that for some reason, a spurious space is tacked
1863 onto the end of the args in some (at least one anyway)
1864 implementations, so strip it off if it exists. */
1865
1866 {
1867 char *command = elf_tdata (abfd)->core_command;
1868 int n = strlen (command);
1869
1870 if (0 < n && command[n - 1] == ' ')
1871 command[n - 1] = '\0';
1872 }
1873
1874 return TRUE;
1875}
1876
1877#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1878#define TARGET_LITTLE_NAME "elf32-littlearm"
1879#define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1880#define TARGET_BIG_NAME "elf32-bigarm"
1881
1882#define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1883#define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1884
252b5132
RH		 1885typedef unsigned long int insn32;
1886typedef unsigned short int insn16;
1887
3a4a14e9
PB		 1888/* In lieu of proper flags, assume all EABIv4 or later objects are
1889 interworkable. */
57e8b36a 1890#define INTERWORK_FLAG(abfd) \
3a4a14e9 1891 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
85a84e7a 1892 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK))
9b485d32 1893
252b5132
RH		 1894/* The linker script knows the section names for placement.
1895 The entry_names are used to do simple name mangling on the stubs.
1896 Given a function name, and its type, the stub can be found. The
9b485d32 1897 name can be changed. The only requirement is the %s be present. */
252b5132
RH		 1898#define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1899#define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1900
1901#define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1902#define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1903
c7b8f16e
JB		 1904#define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1905#define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1906
252b5132
RH		 1907/* The name of the dynamic interpreter. This is put in the .interp
1908 section. */
1909#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1910
5e681ec4
PB		 1911#ifdef FOUR_WORD_PLT
1912
252b5132
RH		 1913/* The first entry in a procedure linkage table looks like
1914 this. It is set up so that any shared library function that is
59f2c4e7 1915 called before the relocation has been set up calls the dynamic
9b485d32 1916 linker first. */
e5a52504 1917static const bfd_vma elf32_arm_plt0_entry [] =
5e681ec4
PB		 1918 {
1919 0xe52de004, /* str lr, [sp, #-4]! */
1920 0xe59fe010, /* ldr lr, [pc, #16] */
1921 0xe08fe00e, /* add lr, pc, lr */
1922 0xe5bef008, /* ldr pc, [lr, #8]! */
1923 };
1924
1925/* Subsequent entries in a procedure linkage table look like
1926 this. */
e5a52504 1927static const bfd_vma elf32_arm_plt_entry [] =
5e681ec4
PB		 1928 {
1929 0xe28fc600, /* add ip, pc, #NN */
1930 0xe28cca00, /* add ip, ip, #NN */
1931 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1932 0x00000000, /* unused */
1933 };
1934
1935#else
1936
5e681ec4
PB		 1937/* The first entry in a procedure linkage table looks like
1938 this. It is set up so that any shared library function that is
1939 called before the relocation has been set up calls the dynamic
1940 linker first. */
e5a52504 1941static const bfd_vma elf32_arm_plt0_entry [] =
917583ad 1942 {
5e681ec4
PB		 1943 0xe52de004, /* str lr, [sp, #-4]! */
1944 0xe59fe004, /* ldr lr, [pc, #4] */
1945 0xe08fe00e, /* add lr, pc, lr */
1946 0xe5bef008, /* ldr pc, [lr, #8]! */
1947 0x00000000, /* &GOT[0] - . */
917583ad 1948 };
252b5132
RH		 1949
1950/* Subsequent entries in a procedure linkage table look like
1951 this. */
e5a52504 1952static const bfd_vma elf32_arm_plt_entry [] =
5e681ec4
PB		 1953 {
1954 0xe28fc600, /* add ip, pc, #0xNN00000 */
1955 0xe28cca00, /* add ip, ip, #0xNN000 */
1956 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1957 };
1958
1959#endif
252b5132 1960
00a97672
RS		 1961/* The format of the first entry in the procedure linkage table
1962 for a VxWorks executable. */
1963static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] =
1964 {
1965 0xe52dc008, /* str ip,[sp,#-8]! */
1966 0xe59fc000, /* ldr ip,[pc] */
1967 0xe59cf008, /* ldr pc,[ip,#8] */
1968 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1969 };
1970
1971/* The format of subsequent entries in a VxWorks executable. */
1972static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] =
1973 {
1974 0xe59fc000, /* ldr ip,[pc] */
1975 0xe59cf000, /* ldr pc,[ip] */
1976 0x00000000, /* .long @got */
1977 0xe59fc000, /* ldr ip,[pc] */
1978 0xea000000, /* b _PLT */
1979 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1980 };
1981
1982/* The format of entries in a VxWorks shared library. */
1983static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] =
1984 {
1985 0xe59fc000, /* ldr ip,[pc] */
1986 0xe79cf009, /* ldr pc,[ip,r9] */
1987 0x00000000, /* .long @got */
1988 0xe59fc000, /* ldr ip,[pc] */
1989 0xe599f008, /* ldr pc,[r9,#8] */
1990 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1991 };
1992
b7693d02
DJ		 1993/* An initial stub used if the PLT entry is referenced from Thumb code. */
1994#define PLT_THUMB_STUB_SIZE 4
1995static const bfd_vma elf32_arm_plt_thumb_stub [] =
1996 {
1997 0x4778, /* bx pc */
1998 0x46c0 /* nop */
1999 };
2000
e5a52504
MM		 2001/* The entries in a PLT when using a DLL-based target with multiple
2002 address spaces. */
2003static const bfd_vma elf32_arm_symbian_plt_entry [] =
2004 {
83a358aa 2005 0xe51ff004, /* ldr pc, [pc, #-4] */
e5a52504
MM		 2006 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2007 };
2008
e489d0ae
PB		 2009/* Used to build a map of a section. This is required for mixed-endian
2010 code/data. */
2011
2012typedef struct elf32_elf_section_map
2013{
2014 bfd_vma vma;
2015 char type;
2016}
2017elf32_arm_section_map;
2018
c7b8f16e
JB		 2019/* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2020
2021typedef enum
2022{
2023 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER,
2024 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER,
2025 VFP11_ERRATUM_ARM_VENEER,
2026 VFP11_ERRATUM_THUMB_VENEER
2027}
2028elf32_vfp11_erratum_type;
2029
2030typedef struct elf32_vfp11_erratum_list
2031{
2032 struct elf32_vfp11_erratum_list *next;
2033 bfd_vma vma;
2034 union
2035 {
2036 struct
2037 {
2038 struct elf32_vfp11_erratum_list *veneer;
2039 unsigned int vfp_insn;
2040 } b;
2041 struct
2042 {
2043 struct elf32_vfp11_erratum_list *branch;
2044 unsigned int id;
2045 } v;
2046 } u;
2047 elf32_vfp11_erratum_type type;
2048}
2049elf32_vfp11_erratum_list;
2050
8e3de13a 2051typedef struct _arm_elf_section_data
e489d0ae
PB		 2052{
2053 struct bfd_elf_section_data elf;
8e3de13a 2054 unsigned int mapcount;
c7b8f16e 2055 unsigned int mapsize;
e489d0ae 2056 elf32_arm_section_map *map;
c7b8f16e
JB		 2057 unsigned int erratumcount;
2058 elf32_vfp11_erratum_list *erratumlist;
8e3de13a
NC		 2059}
2060_arm_elf_section_data;
e489d0ae
PB		 2061
2062#define elf32_arm_section_data(sec) \
8e3de13a 2063 ((_arm_elf_section_data *) elf_section_data (sec))
e489d0ae 2064
ba93b8ac
DJ		 2065/* The size of the thread control block. */
2066#define TCB_SIZE 8
2067
2068struct elf32_arm_obj_tdata
2069{
2070 struct elf_obj_tdata root;
2071
2072 /* tls_type for each local got entry. */
2073 char *local_got_tls_type;
ee065d83 2074
bf21ed78
MS		 2075 /* Zero to warn when linking objects with incompatible enum sizes. */
2076 int no_enum_size_warning;
ba93b8ac
DJ		 2077};
2078
2079#define elf32_arm_tdata(abfd) \
2080 ((struct elf32_arm_obj_tdata *) (abfd)->tdata.any)
2081
2082#define elf32_arm_local_got_tls_type(abfd) \
2083 (elf32_arm_tdata (abfd)->local_got_tls_type)
2084
2085static bfd_boolean
2086elf32_arm_mkobject (bfd *abfd)
2087{
ba93b8ac 2088 if (abfd->tdata.any == NULL)
62d7a5f6
AM		 2089 {
2090 bfd_size_type amt = sizeof (struct elf32_arm_obj_tdata);
2091 abfd->tdata.any = bfd_zalloc (abfd, amt);
2092 if (abfd->tdata.any == NULL)
2093 return FALSE;
2094 }
2095 return bfd_elf_mkobject (abfd);
ba93b8ac
DJ		 2096}
2097
252b5132
RH		 2098/* The ARM linker needs to keep track of the number of relocs that it
2099 decides to copy in check_relocs for each symbol. This is so that
2100 it can discard PC relative relocs if it doesn't need them when
2101 linking with -Bsymbolic. We store the information in a field
2102 extending the regular ELF linker hash table. */
2103
ba93b8ac
DJ		 2104/* This structure keeps track of the number of relocs we have copied
2105 for a given symbol. */
5e681ec4 2106struct elf32_arm_relocs_copied
917583ad
NC		 2107 {
2108 /* Next section. */
5e681ec4 2109 struct elf32_arm_relocs_copied * next;
917583ad
NC		 2110 /* A section in dynobj. */
2111 asection * section;
2112 /* Number of relocs copied in this section. */
2113 bfd_size_type count;
ba93b8ac
DJ		 2114 /* Number of PC-relative relocs copied in this section. */
2115 bfd_size_type pc_count;
917583ad 2116 };
252b5132 2117
ba93b8ac
DJ		 2118#define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2119
ba96a88f 2120/* Arm ELF linker hash entry. */
252b5132 2121struct elf32_arm_link_hash_entry
917583ad
NC		 2122 {
2123 struct elf_link_hash_entry root;
252b5132 2124
917583ad 2125 /* Number of PC relative relocs copied for this symbol. */
5e681ec4 2126 struct elf32_arm_relocs_copied * relocs_copied;
b7693d02
DJ		 2127
2128 /* We reference count Thumb references to a PLT entry separately,
2129 so that we can emit the Thumb trampoline only if needed. */
2130 bfd_signed_vma plt_thumb_refcount;
2131
bd97cb95
DJ		 2132 /* Some references from Thumb code may be eliminated by BL->BLX
2133 conversion, so record them separately. */
2134 bfd_signed_vma plt_maybe_thumb_refcount;
2135
b7693d02
DJ		 2136 /* Since PLT entries have variable size if the Thumb prologue is
2137 used, we need to record the index into .got.plt instead of
2138 recomputing it from the PLT offset. */
2139 bfd_signed_vma plt_got_offset;
ba93b8ac
DJ		 2140
2141#define GOT_UNKNOWN 0
2142#define GOT_NORMAL 1
2143#define GOT_TLS_GD 2
2144#define GOT_TLS_IE 4
2145 unsigned char tls_type;
a4fd1a8e
PB		 2146
2147 /* The symbol marking the real symbol location for exported thumb
2148 symbols with Arm stubs. */
2149 struct elf_link_hash_entry *export_glue;
917583ad 2150 };
252b5132 2151
252b5132 2152/* Traverse an arm ELF linker hash table. */
252b5132
RH		 2153#define elf32_arm_link_hash_traverse(table, func, info) \
2154 (elf_link_hash_traverse \
2155 (&(table)->root, \
b7693d02 2156 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
252b5132
RH		 2157 (info)))
2158
2159/* Get the ARM elf linker hash table from a link_info structure. */
2160#define elf32_arm_hash_table(info) \
2161 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2162
9b485d32 2163/* ARM ELF linker hash table. */
252b5132 2164struct elf32_arm_link_hash_table
917583ad
NC		 2165 {
2166 /* The main hash table. */
2167 struct elf_link_hash_table root;
252b5132 2168
4cc11e76 2169 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
dc810e39 2170 bfd_size_type thumb_glue_size;
252b5132 2171
4cc11e76 2172 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
dc810e39 2173 bfd_size_type arm_glue_size;
252b5132 2174
c7b8f16e
JB		 2175 /* The size in bytes of the section containing glue for VFP11 erratum
2176 veneers. */
2177 bfd_size_type vfp11_erratum_glue_size;
2178
4cc11e76 2179 /* An arbitrary input BFD chosen to hold the glue sections. */
917583ad 2180 bfd * bfd_of_glue_owner;
ba96a88f 2181
e489d0ae
PB		 2182 /* Nonzero to output a BE8 image. */
2183 int byteswap_code;
2184
9c504268 2185 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
87bc043a 2186 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
9c504268
PB		 2187 int target1_is_rel;
2188
eb043451
PB		 2189 /* The relocation to use for R_ARM_TARGET2 relocations. */
2190 int target2_reloc;
2191
319850b4
JB		 2192 /* Nonzero to fix BX instructions for ARMv4 targets. */
2193 int fix_v4bx;
2194
33bfe774
JB		 2195 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2196 int use_blx;
2197
c7b8f16e
JB		 2198 /* What sort of code sequences we should look for which may trigger the
2199 VFP11 denorm erratum. */
2200 bfd_arm_vfp11_fix vfp11_fix;
2201
2202 /* Global counter for the number of fixes we have emitted. */
2203 int num_vfp11_fixes;
2204
27e55c4d
PB		 2205 /* Nonzero to force PIC branch veneers. */
2206 int pic_veneer;
2207
e5a52504
MM		 2208 /* The number of bytes in the initial entry in the PLT. */
2209 bfd_size_type plt_header_size;
2210
2211 /* The number of bytes in the subsequent PLT etries. */
2212 bfd_size_type plt_entry_size;
2213
00a97672
RS		 2214 /* True if the target system is VxWorks. */
2215 int vxworks_p;
2216
e5a52504
MM		 2217 /* True if the target system is Symbian OS. */
2218 int symbian_p;
2219
4e7fd91e
PB		 2220 /* True if the target uses REL relocations. */
2221 int use_rel;
2222
5e681ec4
PB		 2223 /* Short-cuts to get to dynamic linker sections. */
2224 asection *sgot;
2225 asection *sgotplt;
2226 asection *srelgot;
2227 asection *splt;
2228 asection *srelplt;
2229 asection *sdynbss;
2230 asection *srelbss;
2231
00a97672
RS		 2232 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2233 asection *srelplt2;
2234
ba93b8ac
DJ		 2235 /* Data for R_ARM_TLS_LDM32 relocations. */
2236 union {
2237 bfd_signed_vma refcount;
2238 bfd_vma offset;
2239 } tls_ldm_got;
2240
5e681ec4
PB		 2241 /* Small local sym to section mapping cache. */
2242 struct sym_sec_cache sym_sec;
b7693d02
DJ		 2243
2244 /* For convenience in allocate_dynrelocs. */
2245 bfd * obfd;
917583ad 2246 };
252b5132 2247
780a67af
NC		 2248/* Create an entry in an ARM ELF linker hash table. */
2249
2250static struct bfd_hash_entry *
57e8b36a
NC		 2251elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
2252 struct bfd_hash_table * table,
2253 const char * string)
780a67af
NC		 2254{
2255 struct elf32_arm_link_hash_entry * ret =
2256 (struct elf32_arm_link_hash_entry *) entry;
2257
2258 /* Allocate the structure if it has not already been allocated by a
2259 subclass. */
2260 if (ret == (struct elf32_arm_link_hash_entry *) NULL)
57e8b36a
NC		 2261 ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
2262 if (ret == NULL)
780a67af
NC		 2263 return (struct bfd_hash_entry *) ret;
2264
2265 /* Call the allocation method of the superclass. */
2266 ret = ((struct elf32_arm_link_hash_entry *)
2267 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2268 table, string));
57e8b36a 2269 if (ret != NULL)
b7693d02
DJ		 2270 {
2271 ret->relocs_copied = NULL;
ba93b8ac 2272 ret->tls_type = GOT_UNKNOWN;
b7693d02 2273 ret->plt_thumb_refcount = 0;
bd97cb95 2274 ret->plt_maybe_thumb_refcount = 0;
b7693d02 2275 ret->plt_got_offset = -1;
a4fd1a8e 2276 ret->export_glue = NULL;
b7693d02 2277 }
780a67af
NC		 2278
2279 return (struct bfd_hash_entry *) ret;
2280}
2281
00a97672
RS		 2282/* Return true if NAME is the name of the relocation section associated
2283 with S. */
2284
2285static bfd_boolean
2286reloc_section_p (struct elf32_arm_link_hash_table *htab,
2287 const char *name, asection *s)
2288{
2289 if (htab->use_rel)
0112cd26 2290 return CONST_STRNEQ (name, ".rel") && strcmp (s->name, name + 4) == 0;
00a97672 2291 else
0112cd26 2292 return CONST_STRNEQ (name, ".rela") && strcmp (s->name, name + 5) == 0;
00a97672
RS		 2293}
2294
2295/* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
5e681ec4
PB		 2296 shortcuts to them in our hash table. */
2297
2298static bfd_boolean
57e8b36a 2299create_got_section (bfd *dynobj, struct bfd_link_info *info)
5e681ec4
PB		 2300{
2301 struct elf32_arm_link_hash_table *htab;
2302
e5a52504
MM		 2303 htab = elf32_arm_hash_table (info);
2304 /* BPABI objects never have a GOT, or associated sections. */
2305 if (htab->symbian_p)
2306 return TRUE;
2307
5e681ec4
PB		 2308 if (! _bfd_elf_create_got_section (dynobj, info))
2309 return FALSE;
2310
5e681ec4
PB		 2311 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2312 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2313 if (!htab->sgot || !htab->sgotplt)
2314 abort ();
2315
00a97672
RS		 2316 htab->srelgot = bfd_make_section_with_flags (dynobj,
2317 RELOC_SECTION (htab, ".got"),
3496cb2a
L		 2318 (SEC_ALLOC | SEC_LOAD
2319 | SEC_HAS_CONTENTS
2320 | SEC_IN_MEMORY
2321 | SEC_LINKER_CREATED
2322 | SEC_READONLY));
5e681ec4 2323 if (htab->srelgot == NULL
5e681ec4
PB		 2324 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
2325 return FALSE;
2326 return TRUE;
2327}
2328
00a97672
RS		 2329/* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2330 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
5e681ec4
PB		 2331 hash table. */
2332
2333static bfd_boolean
57e8b36a 2334elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5e681ec4
PB		 2335{
2336 struct elf32_arm_link_hash_table *htab;
2337
2338 htab = elf32_arm_hash_table (info);
2339 if (!htab->sgot && !create_got_section (dynobj, info))
2340 return FALSE;
2341
2342 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2343 return FALSE;
2344
2345 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
00a97672
RS		 2346 htab->srelplt = bfd_get_section_by_name (dynobj,
2347 RELOC_SECTION (htab, ".plt"));
5e681ec4
PB		 2348 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2349 if (!info->shared)
00a97672
RS		 2350 htab->srelbss = bfd_get_section_by_name (dynobj,
2351 RELOC_SECTION (htab, ".bss"));
2352
2353 if (htab->vxworks_p)
2354 {
2355 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
2356 return FALSE;
2357
2358 if (info->shared)
2359 {
2360 htab->plt_header_size = 0;
2361 htab->plt_entry_size
2362 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry);
2363 }
2364 else
2365 {
2366 htab->plt_header_size
2367 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry);
2368 htab->plt_entry_size
2369 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry);
2370 }
2371 }
5e681ec4 2372
e5a52504
MM		 2373 if (!htab->splt
2374 || !htab->srelplt
2375 || !htab->sdynbss
5e681ec4
PB		 2376 || (!info->shared && !htab->srelbss))
2377 abort ();
2378
2379 return TRUE;
2380}
2381
2382/* Copy the extra info we tack onto an elf_link_hash_entry. */
2383
2384static void
fcfa13d2 2385elf32_arm_copy_indirect_symbol (struct bfd_link_info *info,
5e681ec4
PB		 2386 struct elf_link_hash_entry *dir,
2387 struct elf_link_hash_entry *ind)
2388{
2389 struct elf32_arm_link_hash_entry *edir, *eind;
2390
2391 edir = (struct elf32_arm_link_hash_entry *) dir;
2392 eind = (struct elf32_arm_link_hash_entry *) ind;
2393
2394 if (eind->relocs_copied != NULL)
2395 {
2396 if (edir->relocs_copied != NULL)
2397 {
2398 struct elf32_arm_relocs_copied **pp;
2399 struct elf32_arm_relocs_copied *p;
2400
fcfa13d2 2401 /* Add reloc counts against the indirect sym to the direct sym
5e681ec4
PB		 2402 list. Merge any entries against the same section. */
2403 for (pp = &eind->relocs_copied; (p = *pp) != NULL; )
2404 {
2405 struct elf32_arm_relocs_copied *q;
2406
2407 for (q = edir->relocs_copied; q != NULL; q = q->next)
2408 if (q->section == p->section)
2409 {
ba93b8ac 2410 q->pc_count += p->pc_count;
5e681ec4
PB		 2411 q->count += p->count;
2412 *pp = p->next;
2413 break;
2414 }
2415 if (q == NULL)
2416 pp = &p->next;
2417 }
2418 *pp = edir->relocs_copied;
2419 }
2420
2421 edir->relocs_copied = eind->relocs_copied;
2422 eind->relocs_copied = NULL;
2423 }
2424
b34b2d70 2425 if (ind->root.type == bfd_link_hash_indirect)
ba93b8ac 2426 {
b34b2d70
DJ		 2427 /* Copy over PLT info. */
2428 edir->plt_thumb_refcount += eind->plt_thumb_refcount;
2429 eind->plt_thumb_refcount = 0;
bd97cb95
DJ		 2430 edir->plt_maybe_thumb_refcount += eind->plt_maybe_thumb_refcount;
2431 eind->plt_maybe_thumb_refcount = 0;
b34b2d70
DJ		 2432
2433 if (dir->got.refcount <= 0)
2434 {
2435 edir->tls_type = eind->tls_type;
2436 eind->tls_type = GOT_UNKNOWN;
2437 }
ba93b8ac
DJ		 2438 }
2439
fcfa13d2 2440 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
5e681ec4
PB		 2441}
2442
9b485d32 2443/* Create an ARM elf linker hash table. */
252b5132
RH		 2444
2445static struct bfd_link_hash_table *
57e8b36a 2446elf32_arm_link_hash_table_create (bfd *abfd)
252b5132
RH		 2447{
2448 struct elf32_arm_link_hash_table *ret;
dc810e39 2449 bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
252b5132 2450
57e8b36a
NC		 2451 ret = bfd_malloc (amt);
2452 if (ret == NULL)
252b5132
RH		 2453 return NULL;
2454
57e8b36a 2455 if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
66eb6687
AM		 2456 elf32_arm_link_hash_newfunc,
2457 sizeof (struct elf32_arm_link_hash_entry)))
252b5132 2458 {
e2d34d7d 2459 free (ret);
252b5132
RH		 2460 return NULL;
2461 }
2462
5e681ec4
PB		 2463 ret->sgot = NULL;
2464 ret->sgotplt = NULL;
2465 ret->srelgot = NULL;
2466 ret->splt = NULL;
2467 ret->srelplt = NULL;
2468 ret->sdynbss = NULL;
2469 ret->srelbss = NULL;
00a97672 2470 ret->srelplt2 = NULL;
252b5132
RH		 2471 ret->thumb_glue_size = 0;
2472 ret->arm_glue_size = 0;
c7b8f16e
JB		 2473 ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
2474 ret->vfp11_erratum_glue_size = 0;
2475 ret->num_vfp11_fixes = 0;
252b5132 2476 ret->bfd_of_glue_owner = NULL;
e489d0ae 2477 ret->byteswap_code = 0;
9c504268 2478 ret->target1_is_rel = 0;
eb043451 2479 ret->target2_reloc = R_ARM_NONE;
e5a52504
MM		 2480#ifdef FOUR_WORD_PLT
2481 ret->plt_header_size = 16;
2482 ret->plt_entry_size = 16;
2483#else
2484 ret->plt_header_size = 20;
2485 ret->plt_entry_size = 12;
2486#endif
33bfe774
JB		 2487 ret->fix_v4bx = 0;
2488 ret->use_blx = 0;
00a97672 2489 ret->vxworks_p = 0;
e5a52504 2490 ret->symbian_p = 0;
4e7fd91e 2491 ret->use_rel = 1;
5e681ec4 2492 ret->sym_sec.abfd = NULL;
b7693d02 2493 ret->obfd = abfd;
ba93b8ac 2494 ret->tls_ldm_got.refcount = 0;
252b5132
RH		 2495
2496 return &ret->root.root;
2497}
2498
9b485d32
NC		 2499/* Locate the Thumb encoded calling stub for NAME. */
2500
252b5132 2501static struct elf_link_hash_entry *
57e8b36a
NC		 2502find_thumb_glue (struct bfd_link_info *link_info,
2503 const char *name,
f2a9dd69 2504 char **error_message)
252b5132
RH		 2505{
2506 char *tmp_name;
2507 struct elf_link_hash_entry *hash;
2508 struct elf32_arm_link_hash_table *hash_table;
2509
2510 /* We need a pointer to the armelf specific hash table. */
2511 hash_table = elf32_arm_hash_table (link_info);
2512
57e8b36a
NC		 2513 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2514 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 2515
2516 BFD_ASSERT (tmp_name);
2517
2518 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
2519
2520 hash = elf_link_hash_lookup
b34976b6 2521 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132 2522
b1657152
AM		 2523 if (hash == NULL
2524 && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"),
2525 tmp_name, name) == -1)
2526 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
252b5132
RH		 2527
2528 free (tmp_name);
2529
2530 return hash;
2531}
2532
9b485d32
NC		 2533/* Locate the ARM encoded calling stub for NAME. */
2534
252b5132 2535static struct elf_link_hash_entry *
57e8b36a
NC		 2536find_arm_glue (struct bfd_link_info *link_info,
2537 const char *name,
f2a9dd69 2538 char **error_message)
252b5132
RH		 2539{
2540 char *tmp_name;
2541 struct elf_link_hash_entry *myh;
2542 struct elf32_arm_link_hash_table *hash_table;
2543
2544 /* We need a pointer to the elfarm specific hash table. */
2545 hash_table = elf32_arm_hash_table (link_info);
2546
57e8b36a
NC		 2547 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2548 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 2549
2550 BFD_ASSERT (tmp_name);
2551
2552 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
2553
2554 myh = elf_link_hash_lookup
b34976b6 2555 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132 2556
b1657152
AM		 2557 if (myh == NULL
2558 && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"),
2559 tmp_name, name) == -1)
2560 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
252b5132
RH		 2561
2562 free (tmp_name);
2563
2564 return myh;
2565}
2566
8f6277f5 2567/* ARM->Thumb glue (static images):
252b5132
RH		 2568
2569 .arm
2570 __func_from_arm:
2571 ldr r12, __func_addr
2572 bx r12
2573 __func_addr:
8f6277f5 2574 .word func @ behave as if you saw a ARM_32 reloc.
252b5132 2575
26079076
PB		 2576 (v5t static images)
2577 .arm
2578 __func_from_arm:
2579 ldr pc, __func_addr
2580 __func_addr:
2581 .word func @ behave as if you saw a ARM_32 reloc.
2582
8f6277f5
PB		 2583 (relocatable images)
2584 .arm
2585 __func_from_arm:
2586 ldr r12, __func_offset
2587 add r12, r12, pc
2588 bx r12
2589 __func_offset:
2590 .word func - .
2591 */
2592
2593#define ARM2THUMB_STATIC_GLUE_SIZE 12
252b5132
RH		 2594static const insn32 a2t1_ldr_insn = 0xe59fc000;
2595static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
2596static const insn32 a2t3_func_addr_insn = 0x00000001;
2597
26079076
PB		 2598#define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
2599static const insn32 a2t1v5_ldr_insn = 0xe51ff004;
2600static const insn32 a2t2v5_func_addr_insn = 0x00000001;
2601
8f6277f5
PB		 2602#define ARM2THUMB_PIC_GLUE_SIZE 16
2603static const insn32 a2t1p_ldr_insn = 0xe59fc004;
2604static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
2605static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
2606
9b485d32 2607/* Thumb->ARM: Thumb->(non-interworking aware) ARM
252b5132
RH		 2608
2609 .thumb .thumb
2610 .align 2 .align 2
2611 __func_from_thumb: __func_from_thumb:
2612 bx pc push {r6, lr}
2613 nop ldr r6, __func_addr
2614 .arm mov lr, pc
2615 __func_change_to_arm: bx r6
2616 b func .arm
2617 __func_back_to_thumb:
2618 ldmia r13! {r6, lr}
2619 bx lr
2620 __func_addr:
9b485d32 2621 .word func */
252b5132
RH		 2622
2623#define THUMB2ARM_GLUE_SIZE 8
2624static const insn16 t2a1_bx_pc_insn = 0x4778;
2625static const insn16 t2a2_noop_insn = 0x46c0;
2626static const insn32 t2a3_b_insn = 0xea000000;
2627
c7b8f16e
JB		 2628#define VFP11_ERRATUM_VENEER_SIZE 8
2629
7e392df6 2630#ifndef ELFARM_NABI_C_INCLUDED
b34976b6 2631bfd_boolean
57e8b36a 2632bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
252b5132
RH		 2633{
2634 asection * s;
2635 bfd_byte * foo;
2636 struct elf32_arm_link_hash_table * globals;
2637
2638 globals = elf32_arm_hash_table (info);
2639
2640 BFD_ASSERT (globals != NULL);
2641
2642 if (globals->arm_glue_size != 0)
2643 {
2644 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2645
dc810e39
AM		 2646 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
2647 ARM2THUMB_GLUE_SECTION_NAME);
252b5132
RH		 2648
2649 BFD_ASSERT (s != NULL);
2650
57e8b36a 2651 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->arm_glue_size);
252b5132 2652
2f475487 2653 BFD_ASSERT (s->size == globals->arm_glue_size);
252b5132
RH		 2654 s->contents = foo;
2655 }
2656
2657 if (globals->thumb_glue_size != 0)
2658 {
2659 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2660
2661 s = bfd_get_section_by_name
2662 (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
2663
2664 BFD_ASSERT (s != NULL);
2665
57e8b36a 2666 foo = bfd_alloc (globals->bfd_of_glue_owner, globals->thumb_glue_size);
252b5132 2667
2f475487 2668 BFD_ASSERT (s->size == globals->thumb_glue_size);
252b5132
RH		 2669 s->contents = foo;
2670 }
c7b8f16e
JB		 2671
2672 if (globals->vfp11_erratum_glue_size != 0)
2673 {
2674 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2675
2676 s = bfd_get_section_by_name
2677 (globals->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
2678
2679 BFD_ASSERT (s != NULL);
2680
2681 foo = bfd_alloc (globals->bfd_of_glue_owner,
2682 globals->vfp11_erratum_glue_size);
2683
2684 BFD_ASSERT (s->size == globals->vfp11_erratum_glue_size);
2685 s->contents = foo;
2686 }
252b5132 2687
b34976b6 2688 return TRUE;
252b5132
RH		 2689}
2690
a4fd1a8e
PB		 2691/* Allocate space and symbols for calling a Thumb function from Arm mode.
2692 returns the symbol identifying teh stub. */
2693static struct elf_link_hash_entry *
57e8b36a
NC		 2694record_arm_to_thumb_glue (struct bfd_link_info * link_info,
2695 struct elf_link_hash_entry * h)
252b5132
RH		 2696{
2697 const char * name = h->root.root.string;
63b0f745 2698 asection * s;
252b5132
RH		 2699 char * tmp_name;
2700 struct elf_link_hash_entry * myh;
14a793b2 2701 struct bfd_link_hash_entry * bh;
252b5132 2702 struct elf32_arm_link_hash_table * globals;
dc810e39 2703 bfd_vma val;
2f475487 2704 bfd_size_type size;
252b5132
RH		 2705
2706 globals = elf32_arm_hash_table (link_info);
2707
2708 BFD_ASSERT (globals != NULL);
2709 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
2710
2711 s = bfd_get_section_by_name
2712 (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
2713
252b5132
RH		 2714 BFD_ASSERT (s != NULL);
2715
57e8b36a 2716 tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 2717
2718 BFD_ASSERT (tmp_name);
2719
2720 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
2721
2722 myh = elf_link_hash_lookup
b34976b6 2723 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH		 2724
2725 if (myh != NULL)
2726 {
9b485d32 2727 /* We've already seen this guy. */
252b5132 2728 free (tmp_name);
a4fd1a8e 2729 return myh;
252b5132
RH		 2730 }
2731
57e8b36a
NC		 2732 /* The only trick here is using hash_table->arm_glue_size as the value.
2733 Even though the section isn't allocated yet, this is where we will be
2734 putting it. */
14a793b2 2735 bh = NULL;
dc810e39
AM		 2736 val = globals->arm_glue_size + 1;
2737 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
2738 tmp_name, BSF_GLOBAL, s, val,
b34976b6 2739 NULL, TRUE, FALSE, &bh);
252b5132 2740
b7693d02
DJ		 2741 myh = (struct elf_link_hash_entry *) bh;
2742 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
2743 myh->forced_local = 1;
2744
252b5132
RH		 2745 free (tmp_name);
2746
27e55c4d
PB		 2747 if (link_info->shared || globals->root.is_relocatable_executable
2748 || globals->pic_veneer)
2f475487 2749 size = ARM2THUMB_PIC_GLUE_SIZE;
26079076
PB		 2750 else if (globals->use_blx)
2751 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
8f6277f5 2752 else
2f475487
AM		 2753 size = ARM2THUMB_STATIC_GLUE_SIZE;
2754
2755 s->size += size;
2756 globals->arm_glue_size += size;
252b5132 2757
a4fd1a8e 2758 return myh;
252b5132
RH		 2759}
2760
2761static void
57e8b36a
NC		 2762record_thumb_to_arm_glue (struct bfd_link_info *link_info,
2763 struct elf_link_hash_entry *h)
252b5132
RH		 2764{
2765 const char *name = h->root.root.string;
63b0f745 2766 asection *s;
252b5132
RH		 2767 char *tmp_name;
2768 struct elf_link_hash_entry *myh;
14a793b2 2769 struct bfd_link_hash_entry *bh;
252b5132 2770 struct elf32_arm_link_hash_table *hash_table;
dc810e39 2771 bfd_vma val;
252b5132
RH		 2772
2773 hash_table = elf32_arm_hash_table (link_info);
2774
2775 BFD_ASSERT (hash_table != NULL);
2776 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
2777
2778 s = bfd_get_section_by_name
2779 (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
2780
2781 BFD_ASSERT (s != NULL);
2782
57e8b36a
NC		 2783 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2784 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 2785
2786 BFD_ASSERT (tmp_name);
2787
2788 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
2789
2790 myh = elf_link_hash_lookup
b34976b6 2791 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH		 2792
2793 if (myh != NULL)
2794 {
9b485d32 2795 /* We've already seen this guy. */
252b5132 2796 free (tmp_name);
9b485d32 2797 return;
252b5132
RH		 2798 }
2799
14a793b2 2800 bh = NULL;
dc810e39
AM		 2801 val = hash_table->thumb_glue_size + 1;
2802 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2803 tmp_name, BSF_GLOBAL, s, val,
b34976b6 2804 NULL, TRUE, FALSE, &bh);
252b5132 2805
9b485d32 2806 /* If we mark it 'Thumb', the disassembler will do a better job. */
14a793b2 2807 myh = (struct elf_link_hash_entry *) bh;
b7693d02
DJ		 2808 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
2809 myh->forced_local = 1;
252b5132
RH		 2810
2811 free (tmp_name);
2812
252b5132
RH		 2813#define CHANGE_TO_ARM "__%s_change_to_arm"
2814#define BACK_FROM_ARM "__%s_back_from_arm"
2815
9b485d32 2816 /* Allocate another symbol to mark where we switch to Arm mode. */
57e8b36a
NC		 2817 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
2818 + strlen (CHANGE_TO_ARM) + 1);
252b5132
RH		 2819
2820 BFD_ASSERT (tmp_name);
2821
2822 sprintf (tmp_name, CHANGE_TO_ARM, name);
2823
14a793b2 2824 bh = NULL;
dc810e39
AM		 2825 val = hash_table->thumb_glue_size + 4,
2826 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2827 tmp_name, BSF_LOCAL, s, val,
b34976b6 2828 NULL, TRUE, FALSE, &bh);
252b5132
RH		 2829
2830 free (tmp_name);
2831
2f475487 2832 s->size += THUMB2ARM_GLUE_SIZE;
252b5132
RH		 2833 hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
2834
2835 return;
2836}
2837
c7b8f16e
JB		 2838
2839/* Add an entry to the code/data map for section SEC. */
2840
2841static void
2842elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma)
2843{
2844 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
2845 unsigned int newidx;
2846
2847 if (sec_data->map == NULL)
2848 {
2849 sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map));
2850 sec_data->mapcount = 0;
2851 sec_data->mapsize = 1;
2852 }
2853
2854 newidx = sec_data->mapcount++;
2855
2856 if (sec_data->mapcount > sec_data->mapsize)
2857 {
2858 sec_data->mapsize *= 2;
2859 sec_data->map = bfd_realloc (sec_data->map, sec_data->mapsize
2860 * sizeof (elf32_arm_section_map));
2861 }
2862
2863 sec_data->map[newidx].vma = vma;
2864 sec_data->map[newidx].type = type;
2865}
2866
2867
2868/* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
2869 veneers are handled for now. */
2870
2871static bfd_vma
2872record_vfp11_erratum_veneer (struct bfd_link_info *link_info,
2873 elf32_vfp11_erratum_list *branch,
2874 bfd *branch_bfd,
2875 asection *branch_sec,
2876 unsigned int offset)
2877{
2878 asection *s;
2879 struct elf32_arm_link_hash_table *hash_table;
2880 char *tmp_name;
2881 struct elf_link_hash_entry *myh;
2882 struct bfd_link_hash_entry *bh;
2883 bfd_vma val;
2884 struct _arm_elf_section_data *sec_data;
2885 int errcount;
2886 elf32_vfp11_erratum_list *newerr;
2887
2888 hash_table = elf32_arm_hash_table (link_info);
2889
2890 BFD_ASSERT (hash_table != NULL);
2891 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
2892
2893 s = bfd_get_section_by_name
2894 (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
2895
2896 sec_data = elf32_arm_section_data (s);
2897
2898 BFD_ASSERT (s != NULL);
2899
2900 tmp_name = bfd_malloc ((bfd_size_type) strlen
2901 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
2902
2903 BFD_ASSERT (tmp_name);
2904
2905 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
2906 hash_table->num_vfp11_fixes);
2907
2908 myh = elf_link_hash_lookup
2909 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
2910
2911 BFD_ASSERT (myh == NULL);
2912
2913 bh = NULL;
2914 val = hash_table->vfp11_erratum_glue_size;
2915 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
2916 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
2917 NULL, TRUE, FALSE, &bh);
2918
2919 myh = (struct elf_link_hash_entry *) bh;
2920 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
2921 myh->forced_local = 1;
2922
2923 /* Link veneer back to calling location. */
2924 errcount = ++(sec_data->erratumcount);
2925 newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
2926
2927 newerr->type = VFP11_ERRATUM_ARM_VENEER;
2928 newerr->vma = -1;
2929 newerr->u.v.branch = branch;
2930 newerr->u.v.id = hash_table->num_vfp11_fixes;
2931 branch->u.b.veneer = newerr;
2932
2933 newerr->next = sec_data->erratumlist;
2934 sec_data->erratumlist = newerr;
2935
2936 /* A symbol for the return from the veneer. */
2937 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
2938 hash_table->num_vfp11_fixes);
2939
2940 myh = elf_link_hash_lookup
2941 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
2942
2943 if (myh != NULL)
2944 abort ();
2945
2946 bh = NULL;
2947 val = offset + 4;
2948 _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL,
2949 branch_sec, val, NULL, TRUE, FALSE, &bh);
2950
2951 myh = (struct elf_link_hash_entry *) bh;
2952 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
2953 myh->forced_local = 1;
2954
2955 free (tmp_name);
2956
2957 /* Generate a mapping symbol for the veneer section, and explicitly add an
2958 entry for that symbol to the code/data map for the section. */
2959 if (hash_table->vfp11_erratum_glue_size == 0)
2960 {
2961 bh = NULL;
2962 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
2963 ever requires this erratum fix. */
2964 _bfd_generic_link_add_one_symbol (link_info,
2965 hash_table->bfd_of_glue_owner, "$a",
2966 BSF_LOCAL, s, 0, NULL,
2967 TRUE, FALSE, &bh);
2968
2969 myh = (struct elf_link_hash_entry *) bh;
2970 myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
2971 myh->forced_local = 1;
2972
2973 /* The elf32_arm_init_maps function only cares about symbols from input
2974 BFDs. We must make a note of this generated mapping symbol
2975 ourselves so that code byteswapping works properly in
2976 elf32_arm_write_section. */
2977 elf32_arm_section_map_add (s, 'a', 0);
2978 }
2979
2980 s->size += VFP11_ERRATUM_VENEER_SIZE;
2981 hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE;
2982 hash_table->num_vfp11_fixes++;
2983
2984 /* The offset of the veneer. */
2985 return val;
2986}
2987
8afb0e02
NC		 2988/* Add the glue sections to ABFD. This function is called from the
2989 linker scripts in ld/emultempl/{armelf}.em. */
9b485d32 2990
b34976b6 2991bfd_boolean
57e8b36a
NC		 2992bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
2993 struct bfd_link_info *info)
252b5132 2994{
252b5132
RH		 2995 flagword flags;
2996 asection *sec;
2997
8afb0e02
NC		 2998 /* If we are only performing a partial
2999 link do not bother adding the glue. */
1049f94e 3000 if (info->relocatable)
b34976b6 3001 return TRUE;
252b5132 3002
252b5132
RH		 3003 sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME);
3004
3005 if (sec == NULL)
3006 {
57db232e
NC		 3007 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
3008 will prevent elf_link_input_bfd() from processing the contents
3009 of this section. */
2f475487
AM		 3010 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3011 | SEC_CODE | SEC_READONLY);
252b5132 3012
3496cb2a
L		 3013 sec = bfd_make_section_with_flags (abfd,
3014 ARM2THUMB_GLUE_SECTION_NAME,
3015 flags);
252b5132
RH		 3016
3017 if (sec == NULL
252b5132 3018 || !bfd_set_section_alignment (abfd, sec, 2))
b34976b6 3019 return FALSE;
9a5aca8c 3020
57db232e
NC		 3021 /* Set the gc mark to prevent the section from being removed by garbage
3022 collection, despite the fact that no relocs refer to this section. */
3023 sec->gc_mark = 1;
252b5132
RH		 3024 }
3025
3026 sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME);
3027
3028 if (sec == NULL)
3029 {
2f475487
AM		 3030 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3031 | SEC_CODE | SEC_READONLY);
252b5132 3032
3496cb2a
L		 3033 sec = bfd_make_section_with_flags (abfd,
3034 THUMB2ARM_GLUE_SECTION_NAME,
3035 flags);
252b5132
RH		 3036
3037 if (sec == NULL
252b5132 3038 || !bfd_set_section_alignment (abfd, sec, 2))
b34976b6 3039 return FALSE;
9a5aca8c 3040
57db232e 3041 sec->gc_mark = 1;
252b5132
RH		 3042 }
3043
c7b8f16e
JB		 3044 sec = bfd_get_section_by_name (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME);
3045
3046 if (sec == NULL)
3047 {
3048 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
3049 | SEC_CODE | SEC_READONLY);
3050
3051 sec = bfd_make_section_with_flags (abfd,
3052 VFP11_ERRATUM_VENEER_SECTION_NAME,
3053 flags);
3054
3055 if (sec == NULL
3056 || !bfd_set_section_alignment (abfd, sec, 2))
3057 return FALSE;
3058
3059 sec->gc_mark = 1;
3060 }
3061
b34976b6 3062 return TRUE;
8afb0e02
NC		 3063}
3064
3065/* Select a BFD to be used to hold the sections used by the glue code.
3066 This function is called from the linker scripts in ld/emultempl/
3067 {armelf/pe}.em */
3068
b34976b6 3069bfd_boolean
57e8b36a 3070bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
8afb0e02
NC		 3071{
3072 struct elf32_arm_link_hash_table *globals;
3073
3074 /* If we are only performing a partial link
3075 do not bother getting a bfd to hold the glue. */
1049f94e 3076 if (info->relocatable)
b34976b6 3077 return TRUE;
8afb0e02 3078
b7693d02
DJ		 3079 /* Make sure we don't attach the glue sections to a dynamic object. */
3080 BFD_ASSERT (!(abfd->flags & DYNAMIC));
3081
8afb0e02
NC		 3082 globals = elf32_arm_hash_table (info);
3083
3084 BFD_ASSERT (globals != NULL);
3085
3086 if (globals->bfd_of_glue_owner != NULL)
b34976b6 3087 return TRUE;
8afb0e02 3088
252b5132
RH		 3089 /* Save the bfd for later use. */
3090 globals->bfd_of_glue_owner = abfd;
cedb70c5 3091
b34976b6 3092 return TRUE;
252b5132
RH		 3093}
3094
39b41c9c
PB		 3095static void check_use_blx(struct elf32_arm_link_hash_table *globals)
3096{
104d59d1
JM		 3097 if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
3098 Tag_CPU_arch) > 2)
39b41c9c
PB		 3099 globals->use_blx = 1;
3100}
3101
b34976b6 3102bfd_boolean
57e8b36a 3103bfd_elf32_arm_process_before_allocation (bfd *abfd,
d504ffc8 3104 struct bfd_link_info *link_info)
252b5132
RH		 3105{
3106 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 3107 Elf_Internal_Rela *internal_relocs = NULL;
252b5132
RH		 3108 Elf_Internal_Rela *irel, *irelend;
3109 bfd_byte *contents = NULL;
252b5132
RH		 3110
3111 asection *sec;
3112 struct elf32_arm_link_hash_table *globals;
3113
3114 /* If we are only performing a partial link do not bother
3115 to construct any glue. */
1049f94e 3116 if (link_info->relocatable)
b34976b6 3117 return TRUE;
252b5132 3118
39ce1a6a
NC		 3119 /* Here we have a bfd that is to be included on the link. We have a
3120 hook to do reloc rummaging, before section sizes are nailed down. */
252b5132
RH		 3121 globals = elf32_arm_hash_table (link_info);
3122
3123 BFD_ASSERT (globals != NULL);
39ce1a6a
NC		 3124
3125 check_use_blx (globals);
252b5132 3126
d504ffc8 3127 if (globals->byteswap_code && !bfd_big_endian (abfd))
e489d0ae 3128 {
d003868e
AM		 3129 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
3130 abfd);
e489d0ae
PB		 3131 return FALSE;
3132 }
f21f3fe0 3133
39ce1a6a
NC		 3134 /* PR 5398: If we have not decided to include any loadable sections in
3135 the output then we will not have a glue owner bfd. This is OK, it
3136 just means that there is nothing else for us to do here. */
3137 if (globals->bfd_of_glue_owner == NULL)
3138 return TRUE;
3139
252b5132
RH		 3140 /* Rummage around all the relocs and map the glue vectors. */
3141 sec = abfd->sections;
3142
3143 if (sec == NULL)
b34976b6 3144 return TRUE;
252b5132
RH		 3145
3146 for (; sec != NULL; sec = sec->next)
3147 {
3148 if (sec->reloc_count == 0)
3149 continue;
3150
2f475487
AM		 3151 if ((sec->flags & SEC_EXCLUDE) != 0)
3152 continue;
3153
252b5132 3154 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
252b5132 3155
9b485d32 3156 /* Load the relocs. */
6cdc0ccc 3157 internal_relocs
57e8b36a 3158 = _bfd_elf_link_read_relocs (abfd, sec, (void *) NULL,
45d6a902 3159 (Elf_Internal_Rela *) NULL, FALSE);
252b5132 3160
6cdc0ccc
AM		 3161 if (internal_relocs == NULL)
3162 goto error_return;
252b5132 3163
6cdc0ccc
AM		 3164 irelend = internal_relocs + sec->reloc_count;
3165 for (irel = internal_relocs; irel < irelend; irel++)
252b5132
RH		 3166 {
3167 long r_type;
3168 unsigned long r_index;
252b5132
RH		 3169
3170 struct elf_link_hash_entry *h;
3171
3172 r_type = ELF32_R_TYPE (irel->r_info);
3173 r_index = ELF32_R_SYM (irel->r_info);
3174
9b485d32 3175 /* These are the only relocation types we care about. */
ba96a88f 3176 if ( r_type != R_ARM_PC24
b7693d02 3177 && r_type != R_ARM_PLT32
5b5bb741
PB		 3178 && r_type != R_ARM_CALL
3179 && r_type != R_ARM_JUMP24
bd97cb95
DJ		 3180 && r_type != R_ARM_THM_CALL
3181 && r_type != R_ARM_THM_JUMP24)
252b5132
RH		 3182 continue;
3183
3184 /* Get the section contents if we haven't done so already. */
3185 if (contents == NULL)
3186 {
3187 /* Get cached copy if it exists. */
3188 if (elf_section_data (sec)->this_hdr.contents != NULL)
3189 contents = elf_section_data (sec)->this_hdr.contents;
3190 else
3191 {
3192 /* Go get them off disk. */
57e8b36a 3193 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
252b5132
RH		 3194 goto error_return;
3195 }
3196 }
3197
a7c10850 3198 /* If the relocation is not against a symbol it cannot concern us. */
252b5132
RH		 3199 h = NULL;
3200
9b485d32 3201 /* We don't care about local symbols. */
252b5132
RH		 3202 if (r_index < symtab_hdr->sh_info)
3203 continue;
3204
9b485d32 3205 /* This is an external symbol. */
252b5132
RH		 3206 r_index -= symtab_hdr->sh_info;
3207 h = (struct elf_link_hash_entry *)
3208 elf_sym_hashes (abfd)[r_index];
3209
3210 /* If the relocation is against a static symbol it must be within
3211 the current section and so cannot be a cross ARM/Thumb relocation. */
3212 if (h == NULL)
3213 continue;
3214
d504ffc8
DJ		 3215 /* If the call will go through a PLT entry then we do not need
3216 glue. */
3217 if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1)
b7693d02
DJ		 3218 continue;
3219
252b5132
RH		 3220 switch (r_type)
3221 {
3222 case R_ARM_PC24:
c6596c5e 3223 case R_ARM_PLT32:
5b5bb741
PB		 3224 case R_ARM_CALL:
3225 case R_ARM_JUMP24:
252b5132 3226 /* This one is a call from arm code. We need to look up
2f0ca46a 3227 the target of the call. If it is a thumb target, we
252b5132 3228 insert glue. */
39b41c9c
PB		 3229 if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC
3230 && !(r_type == R_ARM_CALL && globals->use_blx))
252b5132
RH		 3231 record_arm_to_thumb_glue (link_info, h);
3232 break;
3233
c19d1205 3234 case R_ARM_THM_CALL:
bd97cb95 3235 case R_ARM_THM_JUMP24:
f21f3fe0 3236 /* This one is a call from thumb code. We look
2f0ca46a 3237 up the target of the call. If it is not a thumb
bcbdc74c 3238 target, we insert glue. */
bd97cb95
DJ		 3239 if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC
3240 && !(globals->use_blx && r_type == R_ARM_THM_CALL)
5ab79981 3241 && h->root.type != bfd_link_hash_undefweak)
252b5132
RH		 3242 record_thumb_to_arm_glue (link_info, h);
3243 break;
3244
3245 default:
c6596c5e 3246 abort ();
252b5132
RH		 3247 }
3248 }
6cdc0ccc
AM		 3249
3250 if (contents != NULL
3251 && elf_section_data (sec)->this_hdr.contents != contents)
3252 free (contents);
3253 contents = NULL;
3254
3255 if (internal_relocs != NULL
3256 && elf_section_data (sec)->relocs != internal_relocs)
3257 free (internal_relocs);
3258 internal_relocs = NULL;
252b5132
RH		 3259 }
3260
b34976b6 3261 return TRUE;
9a5aca8c 3262
252b5132 3263error_return:
6cdc0ccc
AM		 3264 if (contents != NULL
3265 && elf_section_data (sec)->this_hdr.contents != contents)
3266 free (contents);
3267 if (internal_relocs != NULL
3268 && elf_section_data (sec)->relocs != internal_relocs)
3269 free (internal_relocs);
9a5aca8c 3270
b34976b6 3271 return FALSE;
252b5132 3272}
7e392df6 3273#endif
252b5132 3274
eb043451 3275
c7b8f16e
JB		 3276/* Initialise maps of ARM/Thumb/data for input BFDs. */
3277
3278void
3279bfd_elf32_arm_init_maps (bfd *abfd)
3280{
3281 Elf_Internal_Sym *isymbuf;
3282 Elf_Internal_Shdr *hdr;
3283 unsigned int i, localsyms;
3284
3285 if ((abfd->flags & DYNAMIC) != 0)
3286 return;
3287
3288 hdr = &elf_tdata (abfd)->symtab_hdr;
3289 localsyms = hdr->sh_info;
3290
3291 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
3292 should contain the number of local symbols, which should come before any
3293 global symbols. Mapping symbols are always local. */
3294 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL,
3295 NULL);
3296
3297 /* No internal symbols read? Skip this BFD. */
3298 if (isymbuf == NULL)
3299 return;
3300
3301 for (i = 0; i < localsyms; i++)
3302 {
3303 Elf_Internal_Sym *isym = &isymbuf[i];
3304 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
3305 const char *name;
3306
3307 if (sec != NULL
3308 && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
3309 {
3310 name = bfd_elf_string_from_elf_section (abfd,
3311 hdr->sh_link, isym->st_name);
3312
3313 if (bfd_is_arm_special_symbol_name (name,
3314 BFD_ARM_SPECIAL_SYM_TYPE_MAP))
3315 elf32_arm_section_map_add (sec, name[1], isym->st_value);
3316 }
3317 }
3318}
3319
3320
3321void
3322bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info)
3323{
3324 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
104d59d1 3325 obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd);
c7b8f16e
JB		 3326
3327 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
3328 if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7)
3329 {
3330 switch (globals->vfp11_fix)
3331 {
3332 case BFD_ARM_VFP11_FIX_DEFAULT:
3333 case BFD_ARM_VFP11_FIX_NONE:
3334 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
3335 break;
3336
3337 default:
3338 /* Give a warning, but do as the user requests anyway. */
3339 (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum "
3340 "workaround is not necessary for target architecture"), obfd);
3341 }
3342 }
3343 else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT)
3344 /* For earlier architectures, we might need the workaround, but do not
3345 enable it by default. If users is running with broken hardware, they
3346 must enable the erratum fix explicitly. */
3347 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
3348}
3349
3350
3351enum bfd_arm_vfp11_pipe {
3352 VFP11_FMAC,
3353 VFP11_LS,
3354 VFP11_DS,
3355 VFP11_BAD
3356};
3357
3358/* Return a VFP register number. This is encoded as RX:X for single-precision
3359 registers, or X:RX for double-precision registers, where RX is the group of
3360 four bits in the instruction encoding and X is the single extension bit.
3361 RX and X fields are specified using their lowest (starting) bit. The return
3362 value is:
3363
3364 0...31: single-precision registers s0...s31
3365 32...63: double-precision registers d0...d31.
3366
3367 Although X should be zero for VFP11 (encoding d0...d15 only), we might
3368 encounter VFP3 instructions, so we allow the full range for DP registers. */
3369
3370static unsigned int
3371bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx,
3372 unsigned int x)
3373{
3374 if (is_double)
3375 return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32;
3376 else
3377 return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1);
3378}
3379
3380/* Set bits in *WMASK according to a register number REG as encoded by
3381 bfd_arm_vfp11_regno(). Ignore d16-d31. */
3382
3383static void
3384bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg)
3385{
3386 if (reg < 32)
3387 *wmask |= 1 << reg;
3388 else if (reg < 48)
3389 *wmask |= 3 << ((reg - 32) * 2);
3390}
3391
3392/* Return TRUE if WMASK overwrites anything in REGS. */
3393
3394static bfd_boolean
3395bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs)
3396{
3397 int i;
3398
3399 for (i = 0; i < numregs; i++)
3400 {
3401 unsigned int reg = regs[i];
3402
3403 if (reg < 32 && (wmask & (1 << reg)) != 0)
3404 return TRUE;
3405
3406 reg -= 32;
3407
3408 if (reg >= 16)
3409 continue;
3410
3411 if ((wmask & (3 << (reg * 2))) != 0)
3412 return TRUE;
3413 }
3414
3415 return FALSE;
3416}
3417
3418/* In this function, we're interested in two things: finding input registers
3419 for VFP data-processing instructions, and finding the set of registers which
3420 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
3421 hold the written set, so FLDM etc. are easy to deal with (we're only
3422 interested in 32 SP registers or 16 dp registers, due to the VFP version
3423 implemented by the chip in question). DP registers are marked by setting
3424 both SP registers in the write mask). */
3425
3426static enum bfd_arm_vfp11_pipe
3427bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs,
3428 int *numregs)
3429{
3430 enum bfd_arm_vfp11_pipe pipe = VFP11_BAD;
3431 bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0;
3432
3433 if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
3434 {
3435 unsigned int pqrs;
3436 unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
3437 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
3438
3439 pqrs = ((insn & 0x00800000) >> 20)
3440 | ((insn & 0x00300000) >> 19)
3441 | ((insn & 0x00000040) >> 6);
3442
3443 switch (pqrs)
3444 {
3445 case 0: /* fmac[sd]. */
3446 case 1: /* fnmac[sd]. */
3447 case 2: /* fmsc[sd]. */
3448 case 3: /* fnmsc[sd]. */
3449 pipe = VFP11_FMAC;
3450 bfd_arm_vfp11_write_mask (destmask, fd);
3451 regs[0] = fd;
3452 regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
3453 regs[2] = fm;
3454 *numregs = 3;
3455 break;
3456
3457 case 4: /* fmul[sd]. */
3458 case 5: /* fnmul[sd]. */
3459 case 6: /* fadd[sd]. */
3460 case 7: /* fsub[sd]. */
3461 pipe = VFP11_FMAC;
3462 goto vfp_binop;
3463
3464 case 8: /* fdiv[sd]. */
3465 pipe = VFP11_DS;
3466 vfp_binop:
3467 bfd_arm_vfp11_write_mask (destmask, fd);
3468 regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
3469 regs[1] = fm;
3470 *numregs = 2;
3471 break;
3472
3473 case 15: /* extended opcode. */
3474 {
3475 unsigned int extn = ((insn >> 15) & 0x1e)
3476 | ((insn >> 7) & 1);
3477
3478 switch (extn)
3479 {
3480 case 0: /* fcpy[sd]. */
3481 case 1: /* fabs[sd]. */
3482 case 2: /* fneg[sd]. */
3483 case 8: /* fcmp[sd]. */
3484 case 9: /* fcmpe[sd]. */
3485 case 10: /* fcmpz[sd]. */
3486 case 11: /* fcmpez[sd]. */
3487 case 16: /* fuito[sd]. */
3488 case 17: /* fsito[sd]. */
3489 case 24: /* ftoui[sd]. */
3490 case 25: /* ftouiz[sd]. */
3491 case 26: /* ftosi[sd]. */
3492 case 27: /* ftosiz[sd]. */
3493 /* These instructions will not bounce due to underflow. */
3494 *numregs = 0;
3495 pipe = VFP11_FMAC;
3496 break;
3497
3498 case 3: /* fsqrt[sd]. */
3499 /* fsqrt cannot underflow, but it can (perhaps) overwrite
3500 registers to cause the erratum in previous instructions. */
3501 bfd_arm_vfp11_write_mask (destmask, fd);
3502 pipe = VFP11_DS;
3503 break;
3504
3505 case 15: /* fcvt{ds,sd}. */
3506 {
3507 int rnum = 0;
3508
3509 bfd_arm_vfp11_write_mask (destmask, fd);
3510
3511 /* Only FCVTSD can underflow. */
3512 if ((insn & 0x100) != 0)
3513 regs[rnum++] = fm;
3514
3515 *numregs = rnum;
3516
3517 pipe = VFP11_FMAC;
3518 }
3519 break;
3520
3521 default:
3522 return VFP11_BAD;
3523 }
3524 }
3525 break;
3526
3527 default:
3528 return VFP11_BAD;
3529 }
3530 }
3531 /* Two-register transfer. */
3532 else if ((insn & 0x0fe00ed0) == 0x0c400a10)
3533 {
3534 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
3535
3536 if ((insn & 0x100000) == 0)
3537 {
3538 if (is_double)
3539 bfd_arm_vfp11_write_mask (destmask, fm);
3540 else
3541 {
3542 bfd_arm_vfp11_write_mask (destmask, fm);
3543 bfd_arm_vfp11_write_mask (destmask, fm + 1);
3544 }
3545 }
3546
3547 pipe = VFP11_LS;
3548 }
3549 else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */
3550 {
3551 int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
3552 unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1);
3553
3554 switch (puw)
3555 {
3556 case 0: /* Two-reg transfer. We should catch these above. */
3557 abort ();
3558
3559 case 2: /* fldm[sdx]. */
3560 case 3:
3561 case 5:
3562 {
3563 unsigned int i, offset = insn & 0xff;
3564
3565 if (is_double)
3566 offset >>= 1;
3567
3568 for (i = fd; i < fd + offset; i++)
3569 bfd_arm_vfp11_write_mask (destmask, i);
3570 }
3571 break;
3572
3573 case 4: /* fld[sd]. */
3574 case 6:
3575 bfd_arm_vfp11_write_mask (destmask, fd);
3576 break;
3577
3578 default:
3579 return VFP11_BAD;
3580 }
3581
3582 pipe = VFP11_LS;
3583 }
3584 /* Single-register transfer. Note L==0. */
3585 else if ((insn & 0x0f100e10) == 0x0e000a10)
3586 {
3587 unsigned int opcode = (insn >> 21) & 7;
3588 unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7);
3589
3590 switch (opcode)
3591 {
3592 case 0: /* fmsr/fmdlr. */
3593 case 1: /* fmdhr. */
3594 /* Mark fmdhr and fmdlr as writing to the whole of the DP
3595 destination register. I don't know if this is exactly right,
3596 but it is the conservative choice. */
3597 bfd_arm_vfp11_write_mask (destmask, fn);
3598 break;
3599
3600 case 7: /* fmxr. */
3601 break;
3602 }
3603
3604 pipe = VFP11_LS;
3605 }
3606
3607 return pipe;
3608}
3609
3610
3611static int elf32_arm_compare_mapping (const void * a, const void * b);
3612
3613
3614/* Look for potentially-troublesome code sequences which might trigger the
3615 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
3616 (available from ARM) for details of the erratum. A short version is
3617 described in ld.texinfo. */
3618
3619bfd_boolean
3620bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info)
3621{
3622 asection *sec;
3623 bfd_byte *contents = NULL;
3624 int state = 0;
3625 int regs[3], numregs = 0;
3626 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
3627 int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR);
3628
3629 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
3630 The states transition as follows:
3631
3632 0 -> 1 (vector) or 0 -> 2 (scalar)
3633 A VFP FMAC-pipeline instruction has been seen. Fill
3634 regs[0]..regs[numregs-1] with its input operands. Remember this
3635 instruction in 'first_fmac'.
3636
3637 1 -> 2
3638 Any instruction, except for a VFP instruction which overwrites
3639 regs[*].
3640
3641 1 -> 3 [ -> 0 ] or
3642 2 -> 3 [ -> 0 ]
3643 A VFP instruction has been seen which overwrites any of regs[*].
3644 We must make a veneer! Reset state to 0 before examining next
3645 instruction.
3646
3647 2 -> 0
3648 If we fail to match anything in state 2, reset to state 0 and reset
3649 the instruction pointer to the instruction after 'first_fmac'.
3650
3651 If the VFP11 vector mode is in use, there must be at least two unrelated
3652 instructions between anti-dependent VFP11 instructions to properly avoid
3653 triggering the erratum, hence the use of the extra state 1.
3654 */
3655
3656 /* If we are only performing a partial link do not bother
3657 to construct any glue. */
3658 if (link_info->relocatable)
3659 return TRUE;
3660
3661 /* We should have chosen a fix type by the time we get here. */
3662 BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT);
3663
3664 if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE)
3665 return TRUE;
2e6030b9
MS		 3666
3667 /* Skip if this bfd does not correspond to an ELF image. */
3668 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
3669 return TRUE;
c7b8f16e
JB		 3670
3671 for (sec = abfd->sections; sec != NULL; sec = sec->next)
3672 {
3673 unsigned int i, span, first_fmac = 0, veneer_of_insn = 0;
3674 struct _arm_elf_section_data *sec_data;
3675
3676 /* If we don't have executable progbits, we're not interested in this
3677 section. Also skip if section is to be excluded. */
3678 if (elf_section_type (sec) != SHT_PROGBITS
3679 || (elf_section_flags (sec) & SHF_EXECINSTR) == 0
3680 || (sec->flags & SEC_EXCLUDE) != 0
3681 || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0)
3682 continue;
3683
3684 sec_data = elf32_arm_section_data (sec);
3685
3686 if (sec_data->mapcount == 0)
3687 continue;
3688
3689 if (elf_section_data (sec)->this_hdr.contents != NULL)
3690 contents = elf_section_data (sec)->this_hdr.contents;
3691 else if (! bfd_malloc_and_get_section (abfd, sec, &contents))
3692 goto error_return;
3693
3694 qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map),
3695 elf32_arm_compare_mapping);
3696
3697 for (span = 0; span < sec_data->mapcount; span++)
3698 {
3699 unsigned int span_start = sec_data->map[span].vma;
3700 unsigned int span_end = (span == sec_data->mapcount - 1)
3701 ? sec->size : sec_data->map[span + 1].vma;
3702 char span_type = sec_data->map[span].type;
3703
3704 /* FIXME: Only ARM mode is supported at present. We may need to
3705 support Thumb-2 mode also at some point. */
3706 if (span_type != 'a')
3707 continue;
3708
3709 for (i = span_start; i < span_end;)
3710 {
3711 unsigned int next_i = i + 4;
3712 unsigned int insn = bfd_big_endian (abfd)
3713 ? (contents[i] << 24)
3714 | (contents[i + 1] << 16)
3715 | (contents[i + 2] << 8)
3716 | contents[i + 3]
3717 : (contents[i + 3] << 24)
3718 | (contents[i + 2] << 16)
3719 | (contents[i + 1] << 8)
3720 | contents[i];
3721 unsigned int writemask = 0;
3722 enum bfd_arm_vfp11_pipe pipe;
3723
3724 switch (state)
3725 {
3726 case 0:
3727 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs,
3728 &numregs);
3729 /* I'm assuming the VFP11 erratum can trigger with denorm
3730 operands on either the FMAC or the DS pipeline. This might
3731 lead to slightly overenthusiastic veneer insertion. */
3732 if (pipe == VFP11_FMAC || pipe == VFP11_DS)
3733 {
3734 state = use_vector ? 1 : 2;
3735 first_fmac = i;
3736 veneer_of_insn = insn;
3737 }
3738 break;
3739
3740 case 1:
3741 {
3742 int other_regs[3], other_numregs;
3743 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
3744 other_regs,
3745 &other_numregs);
3746 if (pipe != VFP11_BAD
3747 && bfd_arm_vfp11_antidependency (writemask, regs,
3748 numregs))
3749 state = 3;
3750 else
3751 state = 2;
3752 }
3753 break;
3754
3755 case 2:
3756 {
3757 int other_regs[3], other_numregs;
3758 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
3759 other_regs,
3760 &other_numregs);
3761 if (pipe != VFP11_BAD
3762 && bfd_arm_vfp11_antidependency (writemask, regs,
3763 numregs))
3764 state = 3;
3765 else
3766 {
3767 state = 0;
3768 next_i = first_fmac + 4;
3769 }
3770 }
3771 break;
3772
3773 case 3:
3774 abort (); /* Should be unreachable. */
3775 }
3776
3777 if (state == 3)
3778 {
3779 elf32_vfp11_erratum_list *newerr
3780 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
3781 int errcount;
3782
3783 errcount = ++(elf32_arm_section_data (sec)->erratumcount);
3784
3785 newerr->u.b.vfp_insn = veneer_of_insn;
3786
3787 switch (span_type)
3788 {
3789 case 'a':
3790 newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER;
3791 break;
3792
3793 default:
3794 abort ();
3795 }
3796
3797 record_vfp11_erratum_veneer (link_info, newerr, abfd, sec,
3798 first_fmac);
3799
3800 newerr->vma = -1;
3801
3802 newerr->next = sec_data->erratumlist;
3803 sec_data->erratumlist = newerr;
3804
3805 state = 0;
3806 }
3807
3808 i = next_i;
3809 }
3810 }
3811
3812 if (contents != NULL
3813 && elf_section_data (sec)->this_hdr.contents != contents)
3814 free (contents);
3815 contents = NULL;
3816 }
3817
3818 return TRUE;
3819
3820error_return:
3821 if (contents != NULL
3822 && elf_section_data (sec)->this_hdr.contents != contents)
3823 free (contents);
3824
3825 return FALSE;
3826}
3827
3828/* Find virtual-memory addresses for VFP11 erratum veneers and return locations
3829 after sections have been laid out, using specially-named symbols. */
3830
3831void
3832bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd,
3833 struct bfd_link_info *link_info)
3834{
3835 asection *sec;
3836 struct elf32_arm_link_hash_table *globals;
3837 char *tmp_name;
3838
3839 if (link_info->relocatable)
3840 return;
2e6030b9
MS		 3841
3842 /* Skip if this bfd does not correspond to an ELF image. */
3843 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
3844 return;
3845
c7b8f16e
JB		 3846 globals = elf32_arm_hash_table (link_info);
3847
3848 tmp_name = bfd_malloc ((bfd_size_type) strlen
3849 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
3850
3851 for (sec = abfd->sections; sec != NULL; sec = sec->next)
3852 {
3853 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
3854 elf32_vfp11_erratum_list *errnode = sec_data->erratumlist;
3855
3856 for (; errnode != NULL; errnode = errnode->next)
3857 {
3858 struct elf_link_hash_entry *myh;
3859 bfd_vma vma;
3860
3861 switch (errnode->type)
3862 {
3863 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
3864 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER:
3865 /* Find veneer symbol. */
3866 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
3867 errnode->u.b.veneer->u.v.id);
3868
3869 myh = elf_link_hash_lookup
3870 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
3871
3872 if (myh == NULL)
3873 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
3874 "`%s'"), abfd, tmp_name);
3875
3876 vma = myh->root.u.def.section->output_section->vma
3877 + myh->root.u.def.section->output_offset
3878 + myh->root.u.def.value;
3879
3880 errnode->u.b.veneer->vma = vma;
3881 break;
3882
3883 case VFP11_ERRATUM_ARM_VENEER:
3884 case VFP11_ERRATUM_THUMB_VENEER:
3885 /* Find return location. */
3886 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
3887 errnode->u.v.id);
3888
3889 myh = elf_link_hash_lookup
3890 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
3891
3892 if (myh == NULL)
3893 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
3894 "`%s'"), abfd, tmp_name);
3895
3896 vma = myh->root.u.def.section->output_section->vma
3897 + myh->root.u.def.section->output_offset
3898 + myh->root.u.def.value;
3899
3900 errnode->u.v.branch->vma = vma;
3901 break;
3902
3903 default:
3904 abort ();
3905 }
3906 }
3907 }
3908
3909 free (tmp_name);
3910}
3911
3912
eb043451
PB		 3913/* Set target relocation values needed during linking. */
3914
3915void
bf21ed78
MS		 3916bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd,
3917 struct bfd_link_info *link_info,
eb043451 3918 int target1_is_rel,
319850b4 3919 char * target2_type,
33bfe774 3920 int fix_v4bx,
c7b8f16e 3921 int use_blx,
bf21ed78 3922 bfd_arm_vfp11_fix vfp11_fix,
27e55c4d 3923 int no_enum_warn, int pic_veneer)
eb043451
PB		 3924{
3925 struct elf32_arm_link_hash_table *globals;
3926
3927 globals = elf32_arm_hash_table (link_info);
3928
3929 globals->target1_is_rel = target1_is_rel;
3930 if (strcmp (target2_type, "rel") == 0)
3931 globals->target2_reloc = R_ARM_REL32;
eeac373a
PB		 3932 else if (strcmp (target2_type, "abs") == 0)
3933 globals->target2_reloc = R_ARM_ABS32;
eb043451
PB		 3934 else if (strcmp (target2_type, "got-rel") == 0)
3935 globals->target2_reloc = R_ARM_GOT_PREL;
3936 else
3937 {
3938 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
3939 target2_type);
3940 }
319850b4 3941 globals->fix_v4bx = fix_v4bx;
33bfe774 3942 globals->use_blx |= use_blx;
c7b8f16e 3943 globals->vfp11_fix = vfp11_fix;
27e55c4d 3944 globals->pic_veneer = pic_veneer;
bf21ed78
MS		 3945
3946 elf32_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
eb043451 3947}
eb043451 3948
252b5132
RH		 3949/* The thumb form of a long branch is a bit finicky, because the offset
3950 encoding is split over two fields, each in it's own instruction. They
f21f3fe0 3951 can occur in any order. So given a thumb form of long branch, and an
252b5132 3952 offset, insert the offset into the thumb branch and return finished
f21f3fe0 3953 instruction.
252b5132 3954
f21f3fe0 3955 It takes two thumb instructions to encode the target address. Each has
4cc11e76 3956 11 bits to invest. The upper 11 bits are stored in one (identified by
f21f3fe0
UD		 3957 H-0.. see below), the lower 11 bits are stored in the other (identified
3958 by H-1).
252b5132 3959
f21f3fe0 3960 Combine together and shifted left by 1 (it's a half word address) and
252b5132
RH		 3961 there you have it.
3962
3963 Op: 1111 = F,
3964 H-0, upper address-0 = 000
3965 Op: 1111 = F,
3966 H-1, lower address-0 = 800
3967
f21f3fe0 3968 They can be ordered either way, but the arm tools I've seen always put
252b5132
RH		 3969 the lower one first. It probably doesn't matter. krk@cygnus.com
3970
3971 XXX: Actually the order does matter. The second instruction (H-1)
3972 moves the computed address into the PC, so it must be the second one
3973 in the sequence. The problem, however is that whilst little endian code
3974 stores the instructions in HI then LOW order, big endian code does the
dfc5f959 3975 reverse. nickc@cygnus.com. */
252b5132 3976
dfc5f959
NC		 3977#define LOW_HI_ORDER 0xF800F000
3978#define HI_LOW_ORDER 0xF000F800
252b5132
RH		 3979
3980static insn32
57e8b36a 3981insert_thumb_branch (insn32 br_insn, int rel_off)
252b5132
RH		 3982{
3983 unsigned int low_bits;
3984 unsigned int high_bits;
3985
252b5132
RH		 3986 BFD_ASSERT ((rel_off & 1) != 1);
3987
dfc5f959
NC		 3988 rel_off >>= 1; /* Half word aligned address. */
3989 low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */
3990 high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */
252b5132
RH		 3991
3992 if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER)
3993 br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits;
3994 else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER)
3995 br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits;
3996 else
9b485d32 3997 /* FIXME: abort is probably not the right call. krk@cygnus.com */
57e8b36a 3998 abort (); /* Error - not a valid branch instruction form. */
252b5132 3999
252b5132
RH		 4000 return br_insn;
4001}
4002
52ab56c2
PB		 4003
4004/* Store an Arm insn into an output section not processed by
4005 elf32_arm_write_section. */
4006
4007static void
4008put_arm_insn (struct elf32_arm_link_hash_table *htab,
4009 bfd * output_bfd, bfd_vma val, void * ptr)
4010{
4011 if (htab->byteswap_code != bfd_little_endian (output_bfd))
4012 bfd_putl32 (val, ptr);
4013 else
4014 bfd_putb32 (val, ptr);
4015}
4016
4017
4018/* Store a 16-bit Thumb insn into an output section not processed by
4019 elf32_arm_write_section. */
4020
4021static void
4022put_thumb_insn (struct elf32_arm_link_hash_table *htab,
4023 bfd * output_bfd, bfd_vma val, void * ptr)
4024{
4025 if (htab->byteswap_code != bfd_little_endian (output_bfd))
4026 bfd_putl16 (val, ptr);
4027 else
4028 bfd_putb16 (val, ptr);
4029}
4030
4031
9b485d32
NC		 4032/* Thumb code calling an ARM function. */
4033
252b5132 4034static int
57e8b36a
NC		 4035elf32_thumb_to_arm_stub (struct bfd_link_info * info,
4036 const char * name,
4037 bfd * input_bfd,
4038 bfd * output_bfd,
4039 asection * input_section,
4040 bfd_byte * hit_data,
4041 asection * sym_sec,
4042 bfd_vma offset,
4043 bfd_signed_vma addend,
f2a9dd69
DJ		 4044 bfd_vma val,
4045 char **error_message)
252b5132 4046{
bcbdc74c 4047 asection * s = 0;
dc810e39 4048 bfd_vma my_offset;
252b5132
RH		 4049 unsigned long int tmp;
4050 long int ret_offset;
bcbdc74c
NC		 4051 struct elf_link_hash_entry * myh;
4052 struct elf32_arm_link_hash_table * globals;
252b5132 4053
f2a9dd69 4054 myh = find_thumb_glue (info, name, error_message);
252b5132 4055 if (myh == NULL)
b34976b6 4056 return FALSE;
252b5132
RH		 4057
4058 globals = elf32_arm_hash_table (info);
4059
4060 BFD_ASSERT (globals != NULL);
4061 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4062
4063 my_offset = myh->root.u.def.value;
4064
4065 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4066 THUMB2ARM_GLUE_SECTION_NAME);
4067
4068 BFD_ASSERT (s != NULL);
4069 BFD_ASSERT (s->contents != NULL);
4070 BFD_ASSERT (s->output_section != NULL);
4071
4072 if ((my_offset & 0x01) == 0x01)
4073 {
4074 if (sym_sec != NULL
4075 && sym_sec->owner != NULL
4076 && !INTERWORK_FLAG (sym_sec->owner))
4077 {
8f615d07 4078 (*_bfd_error_handler)
d003868e
AM		 4079 (_("%B(%s): warning: interworking not enabled.\n"
4080 " first occurrence: %B: thumb call to arm"),
4081 sym_sec->owner, input_bfd, name);
252b5132 4082
b34976b6 4083 return FALSE;
252b5132
RH		 4084 }
4085
4086 --my_offset;
4087 myh->root.u.def.value = my_offset;
4088
52ab56c2
PB		 4089 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn,
4090 s->contents + my_offset);
252b5132 4091
52ab56c2
PB		 4092 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn,
4093 s->contents + my_offset + 2);
252b5132
RH		 4094
4095 ret_offset =
9b485d32
NC		 4096 /* Address of destination of the stub. */
4097 ((bfd_signed_vma) val)
252b5132 4098 - ((bfd_signed_vma)
57e8b36a
NC		 4099 /* Offset from the start of the current section
4100 to the start of the stubs. */
9b485d32
NC		 4101 (s->output_offset
4102 /* Offset of the start of this stub from the start of the stubs. */
4103 + my_offset
4104 /* Address of the start of the current section. */
4105 + s->output_section->vma)
4106 /* The branch instruction is 4 bytes into the stub. */
4107 + 4
4108 /* ARM branches work from the pc of the instruction + 8. */
4109 + 8);
252b5132 4110
52ab56c2
PB		 4111 put_arm_insn (globals, output_bfd,
4112 (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
4113 s->contents + my_offset + 4);
252b5132
RH		 4114 }
4115
4116 BFD_ASSERT (my_offset <= globals->thumb_glue_size);
4117
427bfd90
NC		 4118 /* Now go back and fix up the original BL insn to point to here. */
4119 ret_offset =
4120 /* Address of where the stub is located. */
4121 (s->output_section->vma + s->output_offset + my_offset)
4122 /* Address of where the BL is located. */
57e8b36a
NC		 4123 - (input_section->output_section->vma + input_section->output_offset
4124 + offset)
427bfd90
NC		 4125 /* Addend in the relocation. */
4126 - addend
4127 /* Biassing for PC-relative addressing. */
4128 - 8;
252b5132
RH		 4129
4130 tmp = bfd_get_32 (input_bfd, hit_data
4131 - input_section->vma);
4132
4133 bfd_put_32 (output_bfd,
dc810e39 4134 (bfd_vma) insert_thumb_branch (tmp, ret_offset),
252b5132
RH		 4135 hit_data - input_section->vma);
4136
b34976b6 4137 return TRUE;
252b5132
RH		 4138}
4139
a4fd1a8e 4140/* Populate an Arm to Thumb stub. Returns the stub symbol. */
9b485d32 4141
a4fd1a8e
PB		 4142static struct elf_link_hash_entry *
4143elf32_arm_create_thumb_stub (struct bfd_link_info * info,
4144 const char * name,
4145 bfd * input_bfd,
4146 bfd * output_bfd,
4147 asection * sym_sec,
4148 bfd_vma val,
f2a9dd69
DJ		 4149 asection *s,
4150 char **error_message)
252b5132 4151{
dc810e39 4152 bfd_vma my_offset;
252b5132 4153 long int ret_offset;
bcbdc74c
NC		 4154 struct elf_link_hash_entry * myh;
4155 struct elf32_arm_link_hash_table * globals;
252b5132 4156
f2a9dd69 4157 myh = find_arm_glue (info, name, error_message);
252b5132 4158 if (myh == NULL)
a4fd1a8e 4159 return NULL;
252b5132
RH		 4160
4161 globals = elf32_arm_hash_table (info);
4162
4163 BFD_ASSERT (globals != NULL);
4164 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4165
4166 my_offset = myh->root.u.def.value;
252b5132
RH		 4167
4168 if ((my_offset & 0x01) == 0x01)
4169 {
4170 if (sym_sec != NULL
4171 && sym_sec->owner != NULL
4172 && !INTERWORK_FLAG (sym_sec->owner))
4173 {
8f615d07 4174 (*_bfd_error_handler)
d003868e
AM		 4175 (_("%B(%s): warning: interworking not enabled.\n"
4176 " first occurrence: %B: arm call to thumb"),
4177 sym_sec->owner, input_bfd, name);
252b5132 4178 }
9b485d32 4179
252b5132
RH		 4180 --my_offset;
4181 myh->root.u.def.value = my_offset;
4182
27e55c4d
PB		 4183 if (info->shared || globals->root.is_relocatable_executable
4184 || globals->pic_veneer)
8f6277f5
PB		 4185 {
4186 /* For relocatable objects we can't use absolute addresses,
4187 so construct the address from a relative offset. */
4188 /* TODO: If the offset is small it's probably worth
4189 constructing the address with adds. */
52ab56c2
PB		 4190 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn,
4191 s->contents + my_offset);
4192 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn,
4193 s->contents + my_offset + 4);
4194 put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
4195 s->contents + my_offset + 8);
8f6277f5
PB		 4196 /* Adjust the offset by 4 for the position of the add,
4197 and 8 for the pipeline offset. */
4198 ret_offset = (val - (s->output_offset
4199 + s->output_section->vma
4200 + my_offset + 12))
4201 | 1;
4202 bfd_put_32 (output_bfd, ret_offset,
4203 s->contents + my_offset + 12);
4204 }
26079076
PB		 4205 else if (globals->use_blx)
4206 {
4207 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn,
4208 s->contents + my_offset);
4209
4210 /* It's a thumb address. Add the low order bit. */
4211 bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn,
4212 s->contents + my_offset + 4);
4213 }
8f6277f5
PB		 4214 else
4215 {
52ab56c2
PB		 4216 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn,
4217 s->contents + my_offset);
252b5132 4218
52ab56c2
PB		 4219 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn,
4220 s->contents + my_offset + 4);
252b5132 4221
8f6277f5
PB		 4222 /* It's a thumb address. Add the low order bit. */
4223 bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
4224 s->contents + my_offset + 8);
4225 }
252b5132
RH		 4226 }
4227
4228 BFD_ASSERT (my_offset <= globals->arm_glue_size);
4229
a4fd1a8e
PB		 4230 return myh;
4231}
4232
4233/* Arm code calling a Thumb function. */
4234
4235static int
4236elf32_arm_to_thumb_stub (struct bfd_link_info * info,
4237 const char * name,
4238 bfd * input_bfd,
4239 bfd * output_bfd,
4240 asection * input_section,
4241 bfd_byte * hit_data,
4242 asection * sym_sec,
4243 bfd_vma offset,
4244 bfd_signed_vma addend,
f2a9dd69
DJ		 4245 bfd_vma val,
4246 char **error_message)
a4fd1a8e
PB		 4247{
4248 unsigned long int tmp;
4249 bfd_vma my_offset;
4250 asection * s;
4251 long int ret_offset;
4252 struct elf_link_hash_entry * myh;
4253 struct elf32_arm_link_hash_table * globals;
4254
4255 globals = elf32_arm_hash_table (info);
4256
4257 BFD_ASSERT (globals != NULL);
4258 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4259
4260 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4261 ARM2THUMB_GLUE_SECTION_NAME);
4262 BFD_ASSERT (s != NULL);
4263 BFD_ASSERT (s->contents != NULL);
4264 BFD_ASSERT (s->output_section != NULL);
4265
4266 myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd,
f2a9dd69 4267 sym_sec, val, s, error_message);
a4fd1a8e
PB		 4268 if (!myh)
4269 return FALSE;
4270
4271 my_offset = myh->root.u.def.value;
252b5132
RH		 4272 tmp = bfd_get_32 (input_bfd, hit_data);
4273 tmp = tmp & 0xFF000000;
4274
9b485d32 4275 /* Somehow these are both 4 too far, so subtract 8. */
dc810e39
AM		 4276 ret_offset = (s->output_offset
4277 + my_offset
4278 + s->output_section->vma
4279 - (input_section->output_offset
4280 + input_section->output_section->vma
4281 + offset + addend)
4282 - 8);
9a5aca8c 4283
252b5132
RH		 4284 tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
4285
dc810e39 4286 bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
252b5132 4287
b34976b6 4288 return TRUE;
252b5132
RH		 4289}
4290
a4fd1a8e
PB		 4291/* Populate Arm stub for an exported Thumb function. */
4292
4293static bfd_boolean
4294elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf)
4295{
4296 struct bfd_link_info * info = (struct bfd_link_info *) inf;
4297 asection * s;
4298 struct elf_link_hash_entry * myh;
4299 struct elf32_arm_link_hash_entry *eh;
4300 struct elf32_arm_link_hash_table * globals;
4301 asection *sec;
4302 bfd_vma val;
f2a9dd69 4303 char *error_message;
a4fd1a8e
PB		 4304
4305 eh = elf32_arm_hash_entry(h);
4306 /* Allocate stubs for exported Thumb functions on v4t. */
4307 if (eh->export_glue == NULL)
4308 return TRUE;
4309
4310 globals = elf32_arm_hash_table (info);
4311
4312 BFD_ASSERT (globals != NULL);
4313 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4314
4315 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
4316 ARM2THUMB_GLUE_SECTION_NAME);
4317 BFD_ASSERT (s != NULL);
4318 BFD_ASSERT (s->contents != NULL);
4319 BFD_ASSERT (s->output_section != NULL);
4320
4321 sec = eh->export_glue->root.u.def.section;
0eaedd0e
PB		 4322
4323 BFD_ASSERT (sec->output_section != NULL);
4324
a4fd1a8e
PB		 4325 val = eh->export_glue->root.u.def.value + sec->output_offset
4326 + sec->output_section->vma;
4327 myh = elf32_arm_create_thumb_stub (info, h->root.root.string,
4328 h->root.u.def.section->owner,
f2a9dd69
DJ		 4329 globals->obfd, sec, val, s,
4330 &error_message);
a4fd1a8e
PB		 4331 BFD_ASSERT (myh);
4332 return TRUE;
4333}
4334
4335/* Generate Arm stubs for exported Thumb symbols. */
4336static void
4337elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED,
4338 struct bfd_link_info *link_info)
4339{
4340 struct elf32_arm_link_hash_table * globals;
4341
4342 if (!link_info)
4343 return;
4344
4345 globals = elf32_arm_hash_table (link_info);
84c08195
PB		 4346 /* If blx is available then exported Thumb symbols are OK and there is
4347 nothing to do. */
a4fd1a8e
PB		 4348 if (globals->use_blx)
4349 return;
4350
4351 elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub,
4352 link_info);
4353}
4354
eb043451
PB		 4355/* Some relocations map to different relocations depending on the
4356 target. Return the real relocation. */
4357static int
4358arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
4359 int r_type)
4360{
4361 switch (r_type)
4362 {
4363 case R_ARM_TARGET1:
4364 if (globals->target1_is_rel)
4365 return R_ARM_REL32;
4366 else
4367 return R_ARM_ABS32;
4368
4369 case R_ARM_TARGET2:
4370 return globals->target2_reloc;
4371
4372 default:
4373 return r_type;
4374 }
4375}
eb043451 4376
ba93b8ac
DJ		 4377/* Return the base VMA address which should be subtracted from real addresses
4378 when resolving @dtpoff relocation.
4379 This is PT_TLS segment p_vaddr. */
4380
4381static bfd_vma
4382dtpoff_base (struct bfd_link_info *info)
4383{
4384 /* If tls_sec is NULL, we should have signalled an error already. */
4385 if (elf_hash_table (info)->tls_sec == NULL)
4386 return 0;
4387 return elf_hash_table (info)->tls_sec->vma;
4388}
4389
4390/* Return the relocation value for @tpoff relocation
4391 if STT_TLS virtual address is ADDRESS. */
4392
4393static bfd_vma
4394tpoff (struct bfd_link_info *info, bfd_vma address)
4395{
4396 struct elf_link_hash_table *htab = elf_hash_table (info);
4397 bfd_vma base;
4398
4399 /* If tls_sec is NULL, we should have signalled an error already. */
4400 if (htab->tls_sec == NULL)
4401 return 0;
4402 base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
4403 return address - htab->tls_sec->vma + base;
4404}
4405
00a97672
RS		 4406/* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
4407 VALUE is the relocation value. */
4408
4409static bfd_reloc_status_type
4410elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value)
4411{
4412 if (value > 0xfff)
4413 return bfd_reloc_overflow;
4414
4415 value |= bfd_get_32 (abfd, data) & 0xfffff000;
4416 bfd_put_32 (abfd, value, data);
4417 return bfd_reloc_ok;
4418}
4419
4962c51a
MS		 4420/* For a given value of n, calculate the value of G_n as required to
4421 deal with group relocations. We return it in the form of an
4422 encoded constant-and-rotation, together with the final residual. If n is
4423 specified as less than zero, then final_residual is filled with the
4424 input value and no further action is performed. */
4425
4426static bfd_vma
4427calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual)
4428{
4429 int current_n;
4430 bfd_vma g_n;
4431 bfd_vma encoded_g_n = 0;
4432 bfd_vma residual = value; /* Also known as Y_n. */
4433
4434 for (current_n = 0; current_n <= n; current_n++)
4435 {
4436 int shift;
4437
4438 /* Calculate which part of the value to mask. */
4439 if (residual == 0)
4440 shift = 0;
4441 else
4442 {
4443 int msb;
4444
4445 /* Determine the most significant bit in the residual and
4446 align the resulting value to a 2-bit boundary. */
4447 for (msb = 30; msb >= 0; msb -= 2)
4448 if (residual & (3 << msb))
4449 break;
4450
4451 /* The desired shift is now (msb - 6), or zero, whichever
4452 is the greater. */
4453 shift = msb - 6;
4454 if (shift < 0)
4455 shift = 0;
4456 }
4457
4458 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
4459 g_n = residual & (0xff << shift);
4460 encoded_g_n = (g_n >> shift)
4461 | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8);
4462
4463 /* Calculate the residual for the next time around. */
4464 residual &= ~g_n;
4465 }
4466
4467 *final_residual = residual;
4468
4469 return encoded_g_n;
4470}
4471
4472/* Given an ARM instruction, determine whether it is an ADD or a SUB.
4473 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
4474static int
4475identify_add_or_sub(bfd_vma insn)
4476{
4477 int opcode = insn & 0x1e00000;
4478
4479 if (opcode == 1 << 23) /* ADD */
4480 return 1;
4481
4482 if (opcode == 1 << 22) /* SUB */
4483 return -1;
4484
4485 return 0;
4486}
4487
e95de063
MS		 4488/* Determine if we're dealing with a Thumb-2 object. */
4489
4490static int using_thumb2 (struct elf32_arm_link_hash_table *globals)
4491{
104d59d1
JM		 4492 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
4493 Tag_CPU_arch);
e95de063
MS		 4494 return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7;
4495}
4496
252b5132 4497/* Perform a relocation as part of a final link. */
9b485d32 4498
252b5132 4499static bfd_reloc_status_type
57e8b36a
NC		 4500elf32_arm_final_link_relocate (reloc_howto_type * howto,
4501 bfd * input_bfd,
4502 bfd * output_bfd,
4503 asection * input_section,
4504 bfd_byte * contents,
4505 Elf_Internal_Rela * rel,
4506 bfd_vma value,
4507 struct bfd_link_info * info,
4508 asection * sym_sec,
4509 const char * sym_name,
4510 int sym_flags,
0945cdfd 4511 struct elf_link_hash_entry * h,
f2a9dd69
DJ		 4512 bfd_boolean * unresolved_reloc_p,
4513 char **error_message)
252b5132
RH		 4514{
4515 unsigned long r_type = howto->type;
4516 unsigned long r_symndx;
4517 bfd_byte * hit_data = contents + rel->r_offset;
4518 bfd * dynobj = NULL;
4519 Elf_Internal_Shdr * symtab_hdr;
4520 struct elf_link_hash_entry ** sym_hashes;
4521 bfd_vma * local_got_offsets;
4522 asection * sgot = NULL;
4523 asection * splt = NULL;
4524 asection * sreloc = NULL;
252b5132 4525 bfd_vma addend;
ba96a88f
NC		 4526 bfd_signed_vma signed_addend;
4527 struct elf32_arm_link_hash_table * globals;
f21f3fe0 4528
9c504268
PB		 4529 globals = elf32_arm_hash_table (info);
4530
9c504268
PB		 4531 /* Some relocation type map to different relocations depending on the
4532 target. We pick the right one here. */
eb043451
PB		 4533 r_type = arm_real_reloc_type (globals, r_type);
4534 if (r_type != howto->type)
4535 howto = elf32_arm_howto_from_type (r_type);
9c504268 4536
cac15327
NC		 4537 /* If the start address has been set, then set the EF_ARM_HASENTRY
4538 flag. Setting this more than once is redundant, but the cost is
4539 not too high, and it keeps the code simple.
99e4ae17 4540
cac15327
NC		 4541 The test is done here, rather than somewhere else, because the
4542 start address is only set just before the final link commences.
4543
4544 Note - if the user deliberately sets a start address of 0, the
4545 flag will not be set. */
4546 if (bfd_get_start_address (output_bfd) != 0)
4547 elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
99e4ae17 4548
252b5132
RH		 4549 dynobj = elf_hash_table (info)->dynobj;
4550 if (dynobj)
4551 {
4552 sgot = bfd_get_section_by_name (dynobj, ".got");
4553 splt = bfd_get_section_by_name (dynobj, ".plt");
4554 }
4555 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
4556 sym_hashes = elf_sym_hashes (input_bfd);
4557 local_got_offsets = elf_local_got_offsets (input_bfd);
4558 r_symndx = ELF32_R_SYM (rel->r_info);
4559
4e7fd91e 4560 if (globals->use_rel)
ba96a88f 4561 {
4e7fd91e
PB		 4562 addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
4563
4564 if (addend & ((howto->src_mask + 1) >> 1))
4565 {
4566 signed_addend = -1;
4567 signed_addend &= ~ howto->src_mask;
4568 signed_addend |= addend;
4569 }
4570 else
4571 signed_addend = addend;
ba96a88f
NC		 4572 }
4573 else
4e7fd91e 4574 addend = signed_addend = rel->r_addend;
f21f3fe0 4575
252b5132
RH		 4576 switch (r_type)
4577 {
4578 case R_ARM_NONE:
28a094c2
DJ		 4579 /* We don't need to find a value for this symbol. It's just a
4580 marker. */
4581 *unresolved_reloc_p = FALSE;
252b5132
RH		 4582 return bfd_reloc_ok;
4583
00a97672
RS		 4584 case R_ARM_ABS12:
4585 if (!globals->vxworks_p)
4586 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
4587
252b5132
RH		 4588 case R_ARM_PC24:
4589 case R_ARM_ABS32:
bb224fc3 4590 case R_ARM_ABS32_NOI:
252b5132 4591 case R_ARM_REL32:
bb224fc3 4592 case R_ARM_REL32_NOI:
5b5bb741
PB		 4593 case R_ARM_CALL:
4594 case R_ARM_JUMP24:
dfc5f959 4595 case R_ARM_XPC25:
eb043451 4596 case R_ARM_PREL31:
7359ea65 4597 case R_ARM_PLT32:
7359ea65
DJ		 4598 /* Handle relocations which should use the PLT entry. ABS32/REL32
4599 will use the symbol's value, which may point to a PLT entry, but we
4600 don't need to handle that here. If we created a PLT entry, all
4601 branches in this object should go to it. */
bb224fc3
MS		 4602 if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32
4603 && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI)
7359ea65 4604 && h != NULL
c84cd8ee 4605 && splt != NULL
7359ea65
DJ		 4606 && h->plt.offset != (bfd_vma) -1)
4607 {
c84cd8ee
DJ		 4608 /* If we've created a .plt section, and assigned a PLT entry to
4609 this function, it should not be known to bind locally. If
4610 it were, we would have cleared the PLT entry. */
7359ea65
DJ		 4611 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
4612
4613 value = (splt->output_section->vma
4614 + splt->output_offset
4615 + h->plt.offset);
0945cdfd 4616 *unresolved_reloc_p = FALSE;
7359ea65
DJ		 4617 return _bfd_final_link_relocate (howto, input_bfd, input_section,
4618 contents, rel->r_offset, value,
00a97672 4619 rel->r_addend);
7359ea65
DJ		 4620 }
4621
67687978
PB		 4622 /* When generating a shared object or relocatable executable, these
4623 relocations are copied into the output file to be resolved at
4624 run time. */
4625 if ((info->shared || globals->root.is_relocatable_executable)
7359ea65 4626 && (input_section->flags & SEC_ALLOC)
bb224fc3 4627 && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI)
ee06dc07 4628 || !SYMBOL_CALLS_LOCAL (info, h))
7359ea65
DJ		 4629 && (h == NULL
4630 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
4631 || h->root.type != bfd_link_hash_undefweak)
4632 && r_type != R_ARM_PC24
5b5bb741
PB		 4633 && r_type != R_ARM_CALL
4634 && r_type != R_ARM_JUMP24
ee06dc07 4635 && r_type != R_ARM_PREL31
7359ea65 4636 && r_type != R_ARM_PLT32)
252b5132 4637 {
947216bf
AM		 4638 Elf_Internal_Rela outrel;
4639 bfd_byte *loc;
b34976b6 4640 bfd_boolean skip, relocate;
f21f3fe0 4641
0945cdfd
DJ		 4642 *unresolved_reloc_p = FALSE;
4643
252b5132
RH		 4644 if (sreloc == NULL)
4645 {
4646 const char * name;
f21f3fe0 4647
252b5132
RH		 4648 name = (bfd_elf_string_from_elf_section
4649 (input_bfd,
4650 elf_elfheader (input_bfd)->e_shstrndx,
4651 elf_section_data (input_section)->rel_hdr.sh_name));
4652 if (name == NULL)
4653 return bfd_reloc_notsupported;
f21f3fe0 4654
00a97672 4655 BFD_ASSERT (reloc_section_p (globals, name, input_section));
f21f3fe0 4656
252b5132
RH		 4657 sreloc = bfd_get_section_by_name (dynobj, name);
4658 BFD_ASSERT (sreloc != NULL);
4659 }
f21f3fe0 4660
b34976b6
AM		 4661 skip = FALSE;
4662 relocate = FALSE;
f21f3fe0 4663
00a97672 4664 outrel.r_addend = addend;
c629eae0
JJ		 4665 outrel.r_offset =
4666 _bfd_elf_section_offset (output_bfd, info, input_section,
4667 rel->r_offset);
4668 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 4669 skip = TRUE;
0bb2d96a 4670 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 4671 skip = TRUE, relocate = TRUE;
252b5132
RH		 4672 outrel.r_offset += (input_section->output_section->vma
4673 + input_section->output_offset);
f21f3fe0 4674
252b5132 4675 if (skip)
0bb2d96a 4676 memset (&outrel, 0, sizeof outrel);
5e681ec4
PB		 4677 else if (h != NULL
4678 && h->dynindx != -1
7359ea65 4679 && (!info->shared
5e681ec4 4680 || !info->symbolic
f5385ebf 4681 || !h->def_regular))
5e681ec4 4682 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 4683 else
4684 {
a16385dc
MM		 4685 int symbol;
4686
5e681ec4 4687 /* This symbol is local, or marked to become local. */
b7693d02
DJ		 4688 if (sym_flags == STT_ARM_TFUNC)
4689 value |= 1;
a16385dc 4690 if (globals->symbian_p)
6366ff1e 4691 {
74541ad4
AM		 4692 asection *osec;
4693
6366ff1e
MM		 4694 /* On Symbian OS, the data segment and text segement
4695 can be relocated independently. Therefore, we
4696 must indicate the segment to which this
4697 relocation is relative. The BPABI allows us to
4698 use any symbol in the right segment; we just use
4699 the section symbol as it is convenient. (We
4700 cannot use the symbol given by "h" directly as it
74541ad4
AM		 4701 will not appear in the dynamic symbol table.)
4702
4703 Note that the dynamic linker ignores the section
4704 symbol value, so we don't subtract osec->vma
4705 from the emitted reloc addend. */
10dbd1f3 4706 if (sym_sec)
74541ad4 4707 osec = sym_sec->output_section;
10dbd1f3 4708 else
74541ad4
AM		 4709 osec = input_section->output_section;
4710 symbol = elf_section_data (osec)->dynindx;
4711 if (symbol == 0)
4712 {
4713 struct elf_link_hash_table *htab = elf_hash_table (info);
4714
4715 if ((osec->flags & SEC_READONLY) == 0
4716 && htab->data_index_section != NULL)
4717 osec = htab->data_index_section;
4718 else
4719 osec = htab->text_index_section;
4720 symbol = elf_section_data (osec)->dynindx;
4721 }
6366ff1e
MM		 4722 BFD_ASSERT (symbol != 0);
4723 }
a16385dc
MM		 4724 else
4725 /* On SVR4-ish systems, the dynamic loader cannot
4726 relocate the text and data segments independently,
4727 so the symbol does not matter. */
4728 symbol = 0;
4729 outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
00a97672
RS		 4730 if (globals->use_rel)
4731 relocate = TRUE;
4732 else
4733 outrel.r_addend += value;
252b5132 4734 }
f21f3fe0 4735
947216bf 4736 loc = sreloc->contents;
00a97672
RS		 4737 loc += sreloc->reloc_count++ * RELOC_SIZE (globals);
4738 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
9a5aca8c 4739
f21f3fe0 4740 /* If this reloc is against an external symbol, we do not want to
252b5132 4741 fiddle with the addend. Otherwise, we need to include the symbol
9b485d32 4742 value so that it becomes an addend for the dynamic reloc. */
252b5132
RH		 4743 if (! relocate)
4744 return bfd_reloc_ok;
9a5aca8c 4745
f21f3fe0 4746 return _bfd_final_link_relocate (howto, input_bfd, input_section,
252b5132
RH		 4747 contents, rel->r_offset, value,
4748 (bfd_vma) 0);
4749 }
4750 else switch (r_type)
4751 {
00a97672
RS		 4752 case R_ARM_ABS12:
4753 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
4754
dfc5f959 4755 case R_ARM_XPC25: /* Arm BLX instruction. */
5b5bb741
PB		 4756 case R_ARM_CALL:
4757 case R_ARM_JUMP24:
dfc5f959 4758 case R_ARM_PC24: /* Arm B/BL instruction */
7359ea65 4759 case R_ARM_PLT32:
dfc5f959 4760 if (r_type == R_ARM_XPC25)
252b5132 4761 {
dfc5f959
NC		 4762 /* Check for Arm calling Arm function. */
4763 /* FIXME: Should we translate the instruction into a BL
4764 instruction instead ? */
4765 if (sym_flags != STT_ARM_TFUNC)
d003868e
AM		 4766 (*_bfd_error_handler)
4767 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
4768 input_bfd,
4769 h ? h->root.root.string : "(local)");
dfc5f959 4770 }
39b41c9c 4771 else if (r_type != R_ARM_CALL || !globals->use_blx)
dfc5f959
NC		 4772 {
4773 /* Check for Arm calling Thumb function. */
4774 if (sym_flags == STT_ARM_TFUNC)
4775 {
f2a9dd69
DJ		 4776 if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
4777 output_bfd, input_section,
4778 hit_data, sym_sec, rel->r_offset,
4779 signed_addend, value,
4780 error_message))
4781 return bfd_reloc_ok;
4782 else
4783 return bfd_reloc_dangerous;
dfc5f959 4784 }
252b5132 4785 }
ba96a88f 4786
dea514f5
PB		 4787 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
4788 where:
4789 S is the address of the symbol in the relocation.
4790 P is address of the instruction being relocated.
4791 A is the addend (extracted from the instruction) in bytes.
4792
4793 S is held in 'value'.
4794 P is the base address of the section containing the
4795 instruction plus the offset of the reloc into that
4796 section, ie:
4797 (input_section->output_section->vma +
4798 input_section->output_offset +
4799 rel->r_offset).
4800 A is the addend, converted into bytes, ie:
4801 (signed_addend * 4)
4802
4803 Note: None of these operations have knowledge of the pipeline
4804 size of the processor, thus it is up to the assembler to
4805 encode this information into the addend. */
4806 value -= (input_section->output_section->vma
4807 + input_section->output_offset);
4808 value -= rel->r_offset;
4e7fd91e
PB		 4809 if (globals->use_rel)
4810 value += (signed_addend << howto->size);
4811 else
4812 /* RELA addends do not have to be adjusted by howto->size. */
4813 value += signed_addend;
23080146 4814
dcb5e6e6
NC		 4815 signed_addend = value;
4816 signed_addend >>= howto->rightshift;
9a5aca8c 4817
5ab79981
PB		 4818 /* A branch to an undefined weak symbol is turned into a jump to
4819 the next instruction. */
4820 if (h && h->root.type == bfd_link_hash_undefweak)
4821 {
4822 value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000)
4823 | 0x0affffff;
4824 }
4825 else
59f2c4e7 4826 {
9b485d32 4827 /* Perform a signed range check. */
dcb5e6e6 4828 if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
59f2c4e7
NC		 4829 || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
4830 return bfd_reloc_overflow;
9a5aca8c 4831
5ab79981 4832 addend = (value & 2);
39b41c9c 4833
5ab79981
PB		 4834 value = (signed_addend & howto->dst_mask)
4835 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
39b41c9c 4836
5ab79981 4837 /* Set the H bit in the BLX instruction. */
39b41c9c 4838 if (sym_flags == STT_ARM_TFUNC)
39b41c9c 4839 {
5ab79981
PB		 4840 if (addend)
4841 value |= (1 << 24);
4842 else
4843 value &= ~(bfd_vma)(1 << 24);
4844 }
4845 if (r_type == R_ARM_CALL)
4846 {
4847 /* Select the correct instruction (BL or BLX). */
4848 if (sym_flags == STT_ARM_TFUNC)
4849 value |= (1 << 28);
4850 else
4851 {
4852 value &= ~(bfd_vma)(1 << 28);
4853 value |= (1 << 24);
4854 }
39b41c9c
PB		 4855 }
4856 }
252b5132 4857 break;
f21f3fe0 4858
252b5132
RH		 4859 case R_ARM_ABS32:
4860 value += addend;
4861 if (sym_flags == STT_ARM_TFUNC)
4862 value |= 1;
4863 break;
f21f3fe0 4864
bb224fc3
MS		 4865 case R_ARM_ABS32_NOI:
4866 value += addend;
4867 break;
4868
252b5132 4869 case R_ARM_REL32:
a8bc6c78
PB		 4870 value += addend;
4871 if (sym_flags == STT_ARM_TFUNC)
4872 value |= 1;
252b5132 4873 value -= (input_section->output_section->vma
62efb346 4874 + input_section->output_offset + rel->r_offset);
252b5132 4875 break;
eb043451 4876
bb224fc3
MS		 4877 case R_ARM_REL32_NOI:
4878 value += addend;
4879 value -= (input_section->output_section->vma
4880 + input_section->output_offset + rel->r_offset);
4881 break;
4882
eb043451
PB		 4883 case R_ARM_PREL31:
4884 value -= (input_section->output_section->vma
4885 + input_section->output_offset + rel->r_offset);
4886 value += signed_addend;
4887 if (! h || h->root.type != bfd_link_hash_undefweak)
4888 {
4889 /* Check for overflow */
4890 if ((value ^ (value >> 1)) & (1 << 30))
4891 return bfd_reloc_overflow;
4892 }
4893 value &= 0x7fffffff;
4894 value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
4895 if (sym_flags == STT_ARM_TFUNC)
4896 value |= 1;
4897 break;
252b5132 4898 }
f21f3fe0 4899
252b5132
RH		 4900 bfd_put_32 (input_bfd, value, hit_data);
4901 return bfd_reloc_ok;
4902
4903 case R_ARM_ABS8:
4904 value += addend;
4905 if ((long) value > 0x7f || (long) value < -0x80)
4906 return bfd_reloc_overflow;
4907
4908 bfd_put_8 (input_bfd, value, hit_data);
4909 return bfd_reloc_ok;
4910
4911 case R_ARM_ABS16:
4912 value += addend;
4913
4914 if ((long) value > 0x7fff || (long) value < -0x8000)
4915 return bfd_reloc_overflow;
4916
4917 bfd_put_16 (input_bfd, value, hit_data);
4918 return bfd_reloc_ok;
4919
252b5132 4920 case R_ARM_THM_ABS5:
9b485d32 4921 /* Support ldr and str instructions for the thumb. */
4e7fd91e
PB		 4922 if (globals->use_rel)
4923 {
4924 /* Need to refetch addend. */
4925 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
4926 /* ??? Need to determine shift amount from operand size. */
4927 addend >>= howto->rightshift;
4928 }
252b5132
RH		 4929 value += addend;
4930
4931 /* ??? Isn't value unsigned? */
4932 if ((long) value > 0x1f || (long) value < -0x10)
4933 return bfd_reloc_overflow;
4934
4935 /* ??? Value needs to be properly shifted into place first. */
4936 value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
4937 bfd_put_16 (input_bfd, value, hit_data);
4938 return bfd_reloc_ok;
4939
2cab6cc3
MS		 4940 case R_ARM_THM_ALU_PREL_11_0:
4941 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
4942 {
4943 bfd_vma insn;
4944 bfd_signed_vma relocation;
4945
4946 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
4947 | bfd_get_16 (input_bfd, hit_data + 2);
4948
4949 if (globals->use_rel)
4950 {
4951 signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4)
4952 | ((insn & (1 << 26)) >> 15);
4953 if (insn & 0xf00000)
4954 signed_addend = -signed_addend;
4955 }
4956
4957 relocation = value + signed_addend;
4958 relocation -= (input_section->output_section->vma
4959 + input_section->output_offset
4960 + rel->r_offset);
4961
4962 value = abs (relocation);
4963
4964 if (value >= 0x1000)
4965 return bfd_reloc_overflow;
4966
4967 insn = (insn & 0xfb0f8f00) | (value & 0xff)
4968 | ((value & 0x700) << 4)
4969 | ((value & 0x800) << 15);
4970 if (relocation < 0)
4971 insn |= 0xa00000;
4972
4973 bfd_put_16 (input_bfd, insn >> 16, hit_data);
4974 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
4975
4976 return bfd_reloc_ok;
4977 }
4978
4979 case R_ARM_THM_PC12:
4980 /* Corresponds to: ldr.w reg, [pc, #offset]. */
4981 {
4982 bfd_vma insn;
4983 bfd_signed_vma relocation;
4984
4985 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
4986 | bfd_get_16 (input_bfd, hit_data + 2);
4987
4988 if (globals->use_rel)
4989 {
4990 signed_addend = insn & 0xfff;
4991 if (!(insn & (1 << 23)))
4992 signed_addend = -signed_addend;
4993 }
4994
4995 relocation = value + signed_addend;
4996 relocation -= (input_section->output_section->vma
4997 + input_section->output_offset
4998 + rel->r_offset);
4999
5000 value = abs (relocation);
5001
5002 if (value >= 0x1000)
5003 return bfd_reloc_overflow;
5004
5005 insn = (insn & 0xff7ff000) | value;
5006 if (relocation >= 0)
5007 insn |= (1 << 23);
5008
5009 bfd_put_16 (input_bfd, insn >> 16, hit_data);
5010 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
5011
5012 return bfd_reloc_ok;
5013 }
5014
dfc5f959 5015 case R_ARM_THM_XPC22:
c19d1205 5016 case R_ARM_THM_CALL:
bd97cb95 5017 case R_ARM_THM_JUMP24:
dfc5f959 5018 /* Thumb BL (branch long instruction). */
252b5132 5019 {
b34976b6 5020 bfd_vma relocation;
e95de063 5021 bfd_vma reloc_sign;
b34976b6
AM		 5022 bfd_boolean overflow = FALSE;
5023 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
5024 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
e95de063
MS		 5025 bfd_signed_vma reloc_signed_max;
5026 bfd_signed_vma reloc_signed_min;
b34976b6 5027 bfd_vma check;
252b5132 5028 bfd_signed_vma signed_check;
e95de063
MS		 5029 int bitsize;
5030 int thumb2 = using_thumb2 (globals);
252b5132 5031
5ab79981
PB		 5032 /* A branch to an undefined weak symbol is turned into a jump to
5033 the next instruction. */
5034 if (h && h->root.type == bfd_link_hash_undefweak)
5035 {
5036 bfd_put_16 (input_bfd, 0xe000, hit_data);
5037 bfd_put_16 (input_bfd, 0xbf00, hit_data + 2);
5038 return bfd_reloc_ok;
5039 }
5040
e95de063
MS		 5041 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
5042 with Thumb-1) involving the J1 and J2 bits. */
4e7fd91e
PB		 5043 if (globals->use_rel)
5044 {
e95de063
MS		 5045 bfd_vma s = (upper_insn & (1 << 10)) >> 10;
5046 bfd_vma upper = upper_insn & 0x3ff;
5047 bfd_vma lower = lower_insn & 0x7ff;
5048 bfd_vma j1 = (lower_insn & (1 << 13)) >> 13;
5049 bfd_vma j2 = (lower_insn & (1 << 11)) >> 11;
5050 bfd_vma i1 = j1 ^ s ? 0 : 1;
5051 bfd_vma i2 = j2 ^ s ? 0 : 1;
5052
5053 addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1);
5054 /* Sign extend. */
5055 addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24);
5056
4e7fd91e
PB		 5057 signed_addend = addend;
5058 }
cb1afa5c 5059
dfc5f959
NC		 5060 if (r_type == R_ARM_THM_XPC22)
5061 {
5062 /* Check for Thumb to Thumb call. */
5063 /* FIXME: Should we translate the instruction into a BL
5064 instruction instead ? */
5065 if (sym_flags == STT_ARM_TFUNC)
d003868e
AM		 5066 (*_bfd_error_handler)
5067 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
5068 input_bfd,
5069 h ? h->root.root.string : "(local)");
dfc5f959
NC		 5070 }
5071 else
252b5132 5072 {
dfc5f959
NC		 5073 /* If it is not a call to Thumb, assume call to Arm.
5074 If it is a call relative to a section name, then it is not a
b7693d02
DJ		 5075 function call at all, but rather a long jump. Calls through
5076 the PLT do not require stubs. */
5077 if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION
5078 && (h == NULL || splt == NULL
5079 || h->plt.offset == (bfd_vma) -1))
dfc5f959 5080 {
bd97cb95 5081 if (globals->use_blx && r_type == R_ARM_THM_CALL)
39b41c9c
PB		 5082 {
5083 /* Convert BL to BLX. */
5084 lower_insn = (lower_insn & ~0x1000) | 0x0800;
5085 }
5086 else if (elf32_thumb_to_arm_stub
dfc5f959 5087 (info, sym_name, input_bfd, output_bfd, input_section,
f2a9dd69
DJ		 5088 hit_data, sym_sec, rel->r_offset, signed_addend, value,
5089 error_message))
dfc5f959
NC		 5090 return bfd_reloc_ok;
5091 else
5092 return bfd_reloc_dangerous;
5093 }
bd97cb95
DJ		 5094 else if (sym_flags == STT_ARM_TFUNC && globals->use_blx
5095 && r_type == R_ARM_THM_CALL)
39b41c9c
PB		 5096 {
5097 /* Make sure this is a BL. */
5098 lower_insn |= 0x1800;
5099 }
252b5132 5100 }
f21f3fe0 5101
b7693d02
DJ		 5102 /* Handle calls via the PLT. */
5103 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
5104 {
5105 value = (splt->output_section->vma
5106 + splt->output_offset
5107 + h->plt.offset);
bd97cb95 5108 if (globals->use_blx && r_type == R_ARM_THM_CALL)
33bfe774
JB		 5109 {
5110 /* If the Thumb BLX instruction is available, convert the
5111 BL to a BLX instruction to call the ARM-mode PLT entry. */
39b41c9c 5112 lower_insn = (lower_insn & ~0x1000) | 0x0800;
33bfe774
JB		 5113 }
5114 else
5115 /* Target the Thumb stub before the ARM PLT entry. */
5116 value -= PLT_THUMB_STUB_SIZE;
0945cdfd 5117 *unresolved_reloc_p = FALSE;
b7693d02
DJ		 5118 }
5119
ba96a88f 5120 relocation = value + signed_addend;
f21f3fe0 5121
252b5132 5122 relocation -= (input_section->output_section->vma
ba96a88f
NC		 5123 + input_section->output_offset
5124 + rel->r_offset);
9a5aca8c 5125
252b5132
RH		 5126 check = relocation >> howto->rightshift;
5127
5128 /* If this is a signed value, the rightshift just dropped
5129 leading 1 bits (assuming twos complement). */
5130 if ((bfd_signed_vma) relocation >= 0)
5131 signed_check = check;
5132 else
5133 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
5134
e95de063
MS		 5135 /* Calculate the permissable maximum and minimum values for
5136 this relocation according to whether we're relocating for
5137 Thumb-2 or not. */
5138 bitsize = howto->bitsize;
5139 if (!thumb2)
5140 bitsize -= 2;
5141 reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift;
5142 reloc_signed_min = ~reloc_signed_max;
5143
252b5132 5144 /* Assumes two's complement. */
ba96a88f 5145 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
b34976b6 5146 overflow = TRUE;
252b5132 5147
bd97cb95 5148 if ((lower_insn & 0x5000) == 0x4000)
c62e1cc3
NC		 5149 /* For a BLX instruction, make sure that the relocation is rounded up
5150 to a word boundary. This follows the semantics of the instruction
5151 which specifies that bit 1 of the target address will come from bit
5152 1 of the base address. */
5153 relocation = (relocation + 2) & ~ 3;
cb1afa5c 5154
e95de063
MS		 5155 /* Put RELOCATION back into the insn. Assumes two's complement.
5156 We use the Thumb-2 encoding, which is safe even if dealing with
5157 a Thumb-1 instruction by virtue of our overflow check above. */
5158 reloc_sign = (signed_check < 0) ? 1 : 0;
5159 upper_insn = (upper_insn & ~(bfd_vma) 0x7ff)
5160 | ((relocation >> 12) & 0x3ff)
5161 | (reloc_sign << 10);
5162 lower_insn = (lower_insn & ~(bfd_vma) 0x2fff)
5163 | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13)
5164 | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11)
5165 | ((relocation >> 1) & 0x7ff);
c62e1cc3 5166
252b5132
RH		 5167 /* Put the relocated value back in the object file: */
5168 bfd_put_16 (input_bfd, upper_insn, hit_data);
5169 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
5170
5171 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
5172 }
5173 break;
5174
c19d1205
ZW		 5175 case R_ARM_THM_JUMP19:
5176 /* Thumb32 conditional branch instruction. */
5177 {
5178 bfd_vma relocation;
5179 bfd_boolean overflow = FALSE;
5180 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
5181 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
a00a1f35
MS		 5182 bfd_signed_vma reloc_signed_max = 0xffffe;
5183 bfd_signed_vma reloc_signed_min = -0x100000;
c19d1205
ZW		 5184 bfd_signed_vma signed_check;
5185
5186 /* Need to refetch the addend, reconstruct the top three bits,
5187 and squish the two 11 bit pieces together. */
5188 if (globals->use_rel)
5189 {
5190 bfd_vma S = (upper_insn & 0x0400) >> 10;
a00a1f35 5191 bfd_vma upper = (upper_insn & 0x003f);
c19d1205
ZW		 5192 bfd_vma J1 = (lower_insn & 0x2000) >> 13;
5193 bfd_vma J2 = (lower_insn & 0x0800) >> 11;
5194 bfd_vma lower = (lower_insn & 0x07ff);
5195
a00a1f35
MS		 5196 upper |= J1 << 6;
5197 upper |= J2 << 7;
5198 upper |= (!S) << 8;
c19d1205
ZW		 5199 upper -= 0x0100; /* Sign extend. */
5200
5201 addend = (upper << 12) | (lower << 1);
5202 signed_addend = addend;
5203 }
5204
bd97cb95
DJ		 5205 /* Handle calls via the PLT. */
5206 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
5207 {
5208 value = (splt->output_section->vma
5209 + splt->output_offset
5210 + h->plt.offset);
5211 /* Target the Thumb stub before the ARM PLT entry. */
5212 value -= PLT_THUMB_STUB_SIZE;
5213 *unresolved_reloc_p = FALSE;
5214 }
5215
c19d1205
ZW		 5216 /* ??? Should handle interworking? GCC might someday try to
5217 use this for tail calls. */
5218
5219 relocation = value + signed_addend;
5220 relocation -= (input_section->output_section->vma
5221 + input_section->output_offset
5222 + rel->r_offset);
a00a1f35 5223 signed_check = (bfd_signed_vma) relocation;
c19d1205 5224
c19d1205
ZW		 5225 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
5226 overflow = TRUE;
5227
5228 /* Put RELOCATION back into the insn. */
5229 {
5230 bfd_vma S = (relocation & 0x00100000) >> 20;
5231 bfd_vma J2 = (relocation & 0x00080000) >> 19;
5232 bfd_vma J1 = (relocation & 0x00040000) >> 18;
5233 bfd_vma hi = (relocation & 0x0003f000) >> 12;
5234 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
5235
a00a1f35 5236 upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi;
c19d1205
ZW		 5237 lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
5238 }
5239
5240 /* Put the relocated value back in the object file: */
5241 bfd_put_16 (input_bfd, upper_insn, hit_data);
5242 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
5243
5244 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
5245 }
5246
5247 case R_ARM_THM_JUMP11:
5248 case R_ARM_THM_JUMP8:
5249 case R_ARM_THM_JUMP6:
51c5503b
NC		 5250 /* Thumb B (branch) instruction). */
5251 {
6cf9e9fe 5252 bfd_signed_vma relocation;
51c5503b
NC		 5253 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
5254 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
51c5503b
NC		 5255 bfd_signed_vma signed_check;
5256
c19d1205
ZW		 5257 /* CZB cannot jump backward. */
5258 if (r_type == R_ARM_THM_JUMP6)
5259 reloc_signed_min = 0;
5260
4e7fd91e 5261 if (globals->use_rel)
6cf9e9fe 5262 {
4e7fd91e
PB		 5263 /* Need to refetch addend. */
5264 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
5265 if (addend & ((howto->src_mask + 1) >> 1))
5266 {
5267 signed_addend = -1;
5268 signed_addend &= ~ howto->src_mask;
5269 signed_addend |= addend;
5270 }
5271 else
5272 signed_addend = addend;
5273 /* The value in the insn has been right shifted. We need to
5274 undo this, so that we can perform the address calculation
5275 in terms of bytes. */
5276 signed_addend <<= howto->rightshift;
6cf9e9fe 5277 }
6cf9e9fe 5278 relocation = value + signed_addend;
51c5503b
NC		 5279
5280 relocation -= (input_section->output_section->vma
5281 + input_section->output_offset
5282 + rel->r_offset);
5283
6cf9e9fe
NC		 5284 relocation >>= howto->rightshift;
5285 signed_check = relocation;
c19d1205
ZW		 5286
5287 if (r_type == R_ARM_THM_JUMP6)
5288 relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
5289 else
5290 relocation &= howto->dst_mask;
51c5503b 5291 relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
cedb70c5 5292
51c5503b
NC		 5293 bfd_put_16 (input_bfd, relocation, hit_data);
5294
5295 /* Assumes two's complement. */
5296 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
5297 return bfd_reloc_overflow;
5298
5299 return bfd_reloc_ok;
5300 }
cedb70c5 5301
8375c36b
PB		 5302 case R_ARM_ALU_PCREL7_0:
5303 case R_ARM_ALU_PCREL15_8:
5304 case R_ARM_ALU_PCREL23_15:
5305 {
5306 bfd_vma insn;
5307 bfd_vma relocation;
5308
5309 insn = bfd_get_32 (input_bfd, hit_data);
4e7fd91e
PB		 5310 if (globals->use_rel)
5311 {
5312 /* Extract the addend. */
5313 addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
5314 signed_addend = addend;
5315 }
8375c36b
PB		 5316 relocation = value + signed_addend;
5317
5318 relocation -= (input_section->output_section->vma
5319 + input_section->output_offset
5320 + rel->r_offset);
5321 insn = (insn & ~0xfff)
5322 | ((howto->bitpos << 7) & 0xf00)
5323 | ((relocation >> howto->bitpos) & 0xff);
5324 bfd_put_32 (input_bfd, value, hit_data);
5325 }
5326 return bfd_reloc_ok;
5327
252b5132
RH		 5328 case R_ARM_GNU_VTINHERIT:
5329 case R_ARM_GNU_VTENTRY:
5330 return bfd_reloc_ok;
5331
c19d1205 5332 case R_ARM_GOTOFF32:
252b5132
RH		 5333 /* Relocation is relative to the start of the
5334 global offset table. */
5335
5336 BFD_ASSERT (sgot != NULL);
5337 if (sgot == NULL)
5338 return bfd_reloc_notsupported;
9a5aca8c 5339
cedb70c5 5340 /* If we are addressing a Thumb function, we need to adjust the
ee29b9fb
RE		 5341 address by one, so that attempts to call the function pointer will
5342 correctly interpret it as Thumb code. */
5343 if (sym_flags == STT_ARM_TFUNC)
5344 value += 1;
5345
252b5132
RH		 5346 /* Note that sgot->output_offset is not involved in this
5347 calculation. We always want the start of .got. If we
5348 define _GLOBAL_OFFSET_TABLE in a different way, as is
5349 permitted by the ABI, we might have to change this
9b485d32 5350 calculation. */
252b5132 5351 value -= sgot->output_section->vma;
f21f3fe0 5352 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17 5353 contents, rel->r_offset, value,
00a97672 5354 rel->r_addend);
252b5132
RH		 5355
5356 case R_ARM_GOTPC:
a7c10850 5357 /* Use global offset table as symbol value. */
252b5132 5358 BFD_ASSERT (sgot != NULL);
f21f3fe0 5359
252b5132
RH		 5360 if (sgot == NULL)
5361 return bfd_reloc_notsupported;
5362
0945cdfd 5363 *unresolved_reloc_p = FALSE;
252b5132 5364 value = sgot->output_section->vma;
f21f3fe0 5365 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17 5366 contents, rel->r_offset, value,
00a97672 5367 rel->r_addend);
f21f3fe0 5368
252b5132 5369 case R_ARM_GOT32:
eb043451 5370 case R_ARM_GOT_PREL:
252b5132 5371 /* Relocation is to the entry for this symbol in the
9b485d32 5372 global offset table. */
252b5132
RH		 5373 if (sgot == NULL)
5374 return bfd_reloc_notsupported;
f21f3fe0 5375
252b5132
RH		 5376 if (h != NULL)
5377 {
5378 bfd_vma off;
5e681ec4 5379 bfd_boolean dyn;
f21f3fe0 5380
252b5132
RH		 5381 off = h->got.offset;
5382 BFD_ASSERT (off != (bfd_vma) -1);
5e681ec4 5383 dyn = globals->root.dynamic_sections_created;
f21f3fe0 5384
5e681ec4 5385 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
50d6c878 5386 || (info->shared
5e681ec4
PB		 5387 && SYMBOL_REFERENCES_LOCAL (info, h))
5388 || (ELF_ST_VISIBILITY (h->other)
5389 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 5390 {
5391 /* This is actually a static link, or it is a -Bsymbolic link
5392 and the symbol is defined locally. We must initialize this
5393 entry in the global offset table. Since the offset must
5394 always be a multiple of 4, we use the least significant bit
5395 to record whether we have initialized it already.
f21f3fe0 5396
00a97672 5397 When doing a dynamic link, we create a .rel(a).got relocation
f21f3fe0 5398 entry to initialize the value. This is done in the
9b485d32 5399 finish_dynamic_symbol routine. */
252b5132
RH		 5400 if ((off & 1) != 0)
5401 off &= ~1;
5402 else
5403 {
ee29b9fb
RE		 5404 /* If we are addressing a Thumb function, we need to
5405 adjust the address by one, so that attempts to
5406 call the function pointer will correctly
5407 interpret it as Thumb code. */
5408 if (sym_flags == STT_ARM_TFUNC)
5409 value |= 1;
5410
252b5132
RH		 5411 bfd_put_32 (output_bfd, value, sgot->contents + off);
5412 h->got.offset |= 1;
5413 }
5414 }
0945cdfd
DJ		 5415 else
5416 *unresolved_reloc_p = FALSE;
f21f3fe0 5417
252b5132
RH		 5418 value = sgot->output_offset + off;
5419 }
5420 else
5421 {
5422 bfd_vma off;
f21f3fe0 5423
252b5132
RH		 5424 BFD_ASSERT (local_got_offsets != NULL &&
5425 local_got_offsets[r_symndx] != (bfd_vma) -1);
f21f3fe0 5426
252b5132 5427 off = local_got_offsets[r_symndx];
f21f3fe0 5428
252b5132
RH		 5429 /* The offset must always be a multiple of 4. We use the
5430 least significant bit to record whether we have already
9b485d32 5431 generated the necessary reloc. */
252b5132
RH		 5432 if ((off & 1) != 0)
5433 off &= ~1;
5434 else
5435 {
b7693d02
DJ		 5436 /* If we are addressing a Thumb function, we need to
5437 adjust the address by one, so that attempts to
5438 call the function pointer will correctly
5439 interpret it as Thumb code. */
5440 if (sym_flags == STT_ARM_TFUNC)
5441 value |= 1;
5442
00a97672
RS		 5443 if (globals->use_rel)
5444 bfd_put_32 (output_bfd, value, sgot->contents + off);
f21f3fe0 5445
252b5132
RH		 5446 if (info->shared)
5447 {
5448 asection * srelgot;
947216bf
AM		 5449 Elf_Internal_Rela outrel;
5450 bfd_byte *loc;
f21f3fe0 5451
00a97672
RS		 5452 srelgot = (bfd_get_section_by_name
5453 (dynobj, RELOC_SECTION (globals, ".got")));
252b5132 5454 BFD_ASSERT (srelgot != NULL);
f21f3fe0 5455
00a97672 5456 outrel.r_addend = addend + value;
252b5132 5457 outrel.r_offset = (sgot->output_section->vma
f21f3fe0 5458 + sgot->output_offset
252b5132
RH		 5459 + off);
5460 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
947216bf 5461 loc = srelgot->contents;
00a97672
RS		 5462 loc += srelgot->reloc_count++ * RELOC_SIZE (globals);
5463 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
252b5132 5464 }
f21f3fe0 5465
252b5132
RH		 5466 local_got_offsets[r_symndx] |= 1;
5467 }
f21f3fe0 5468
252b5132
RH		 5469 value = sgot->output_offset + off;
5470 }
eb043451
PB		 5471 if (r_type != R_ARM_GOT32)
5472 value += sgot->output_section->vma;
9a5aca8c 5473
f21f3fe0 5474 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17 5475 contents, rel->r_offset, value,
00a97672 5476 rel->r_addend);
f21f3fe0 5477
ba93b8ac
DJ		 5478 case R_ARM_TLS_LDO32:
5479 value = value - dtpoff_base (info);
5480
5481 return _bfd_final_link_relocate (howto, input_bfd, input_section,
00a97672
RS		 5482 contents, rel->r_offset, value,
5483 rel->r_addend);
ba93b8ac
DJ		 5484
5485 case R_ARM_TLS_LDM32:
5486 {
5487 bfd_vma off;
5488
5489 if (globals->sgot == NULL)
5490 abort ();
5491
5492 off = globals->tls_ldm_got.offset;
5493
5494 if ((off & 1) != 0)
5495 off &= ~1;
5496 else
5497 {
5498 /* If we don't know the module number, create a relocation
5499 for it. */
5500 if (info->shared)
5501 {
5502 Elf_Internal_Rela outrel;
5503 bfd_byte *loc;
5504
5505 if (globals->srelgot == NULL)
5506 abort ();
5507
00a97672 5508 outrel.r_addend = 0;
ba93b8ac
DJ		 5509 outrel.r_offset = (globals->sgot->output_section->vma
5510 + globals->sgot->output_offset + off);
5511 outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
5512
00a97672
RS		 5513 if (globals->use_rel)
5514 bfd_put_32 (output_bfd, outrel.r_addend,
5515 globals->sgot->contents + off);
ba93b8ac
DJ		 5516
5517 loc = globals->srelgot->contents;
00a97672
RS		 5518 loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals);
5519 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac
DJ		 5520 }
5521 else
5522 bfd_put_32 (output_bfd, 1, globals->sgot->contents + off);
5523
5524 globals->tls_ldm_got.offset |= 1;
5525 }
5526
5527 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
5528 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
5529
5530 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5531 contents, rel->r_offset, value,
00a97672 5532 rel->r_addend);
ba93b8ac
DJ		 5533 }
5534
5535 case R_ARM_TLS_GD32:
5536 case R_ARM_TLS_IE32:
5537 {
5538 bfd_vma off;
5539 int indx;
5540 char tls_type;
5541
5542 if (globals->sgot == NULL)
5543 abort ();
5544
5545 indx = 0;
5546 if (h != NULL)
5547 {
5548 bfd_boolean dyn;
5549 dyn = globals->root.dynamic_sections_created;
5550 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5551 && (!info->shared
5552 || !SYMBOL_REFERENCES_LOCAL (info, h)))
5553 {
5554 *unresolved_reloc_p = FALSE;
5555 indx = h->dynindx;
5556 }
5557 off = h->got.offset;
5558 tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
5559 }
5560 else
5561 {
5562 if (local_got_offsets == NULL)
5563 abort ();
5564 off = local_got_offsets[r_symndx];
5565 tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
5566 }
5567
5568 if (tls_type == GOT_UNKNOWN)
5569 abort ();
5570
5571 if ((off & 1) != 0)
5572 off &= ~1;
5573 else
5574 {
5575 bfd_boolean need_relocs = FALSE;
5576 Elf_Internal_Rela outrel;
5577 bfd_byte *loc = NULL;
5578 int cur_off = off;
5579
5580 /* The GOT entries have not been initialized yet. Do it
5581 now, and emit any relocations. If both an IE GOT and a
5582 GD GOT are necessary, we emit the GD first. */
5583
5584 if ((info->shared || indx != 0)
5585 && (h == NULL
5586 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5587 || h->root.type != bfd_link_hash_undefweak))
5588 {
5589 need_relocs = TRUE;
5590 if (globals->srelgot == NULL)
5591 abort ();
5592 loc = globals->srelgot->contents;
00a97672 5593 loc += globals->srelgot->reloc_count * RELOC_SIZE (globals);
ba93b8ac
DJ		 5594 }
5595
5596 if (tls_type & GOT_TLS_GD)
5597 {
5598 if (need_relocs)
5599 {
00a97672 5600 outrel.r_addend = 0;
ba93b8ac 5601 outrel.r_offset = (globals->sgot->output_section->vma
00a97672
RS		 5602 + globals->sgot->output_offset
5603 + cur_off);
ba93b8ac 5604 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
ba93b8ac 5605
00a97672
RS		 5606 if (globals->use_rel)
5607 bfd_put_32 (output_bfd, outrel.r_addend,
5608 globals->sgot->contents + cur_off);
5609
5610 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac 5611 globals->srelgot->reloc_count++;
00a97672 5612 loc += RELOC_SIZE (globals);
ba93b8ac
DJ		 5613
5614 if (indx == 0)
5615 bfd_put_32 (output_bfd, value - dtpoff_base (info),
5616 globals->sgot->contents + cur_off + 4);
5617 else
5618 {
00a97672 5619 outrel.r_addend = 0;
ba93b8ac
DJ		 5620 outrel.r_info = ELF32_R_INFO (indx,
5621 R_ARM_TLS_DTPOFF32);
5622 outrel.r_offset += 4;
00a97672
RS		 5623
5624 if (globals->use_rel)
5625 bfd_put_32 (output_bfd, outrel.r_addend,
5626 globals->sgot->contents + cur_off + 4);
5627
5628
5629 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac 5630 globals->srelgot->reloc_count++;
00a97672 5631 loc += RELOC_SIZE (globals);
ba93b8ac
DJ		 5632 }
5633 }
5634 else
5635 {
5636 /* If we are not emitting relocations for a
5637 general dynamic reference, then we must be in a
5638 static link or an executable link with the
5639 symbol binding locally. Mark it as belonging
5640 to module 1, the executable. */
5641 bfd_put_32 (output_bfd, 1,
5642 globals->sgot->contents + cur_off);
5643 bfd_put_32 (output_bfd, value - dtpoff_base (info),
5644 globals->sgot->contents + cur_off + 4);
5645 }
5646
5647 cur_off += 8;
5648 }
5649
5650 if (tls_type & GOT_TLS_IE)
5651 {
5652 if (need_relocs)
5653 {
00a97672
RS		 5654 if (indx == 0)
5655 outrel.r_addend = value - dtpoff_base (info);
5656 else
5657 outrel.r_addend = 0;
ba93b8ac
DJ		 5658 outrel.r_offset = (globals->sgot->output_section->vma
5659 + globals->sgot->output_offset
5660 + cur_off);
5661 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
5662
00a97672
RS		 5663 if (globals->use_rel)
5664 bfd_put_32 (output_bfd, outrel.r_addend,
ba93b8ac
DJ		 5665 globals->sgot->contents + cur_off);
5666
00a97672 5667 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac 5668 globals->srelgot->reloc_count++;
00a97672 5669 loc += RELOC_SIZE (globals);
ba93b8ac
DJ		 5670 }
5671 else
5672 bfd_put_32 (output_bfd, tpoff (info, value),
5673 globals->sgot->contents + cur_off);
5674 cur_off += 4;
5675 }
5676
5677 if (h != NULL)
5678 h->got.offset |= 1;
5679 else
5680 local_got_offsets[r_symndx] |= 1;
5681 }
5682
5683 if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
5684 off += 8;
5685 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
5686 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
5687
5688 return _bfd_final_link_relocate (howto, input_bfd, input_section,
5689 contents, rel->r_offset, value,
00a97672 5690 rel->r_addend);
ba93b8ac
DJ		 5691 }
5692
5693 case R_ARM_TLS_LE32:
5694 if (info->shared)
5695 {
5696 (*_bfd_error_handler)
5697 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
5698 input_bfd, input_section,
5699 (long) rel->r_offset, howto->name);
5700 return FALSE;
5701 }
5702 else
5703 value = tpoff (info, value);
5704
5705 return _bfd_final_link_relocate (howto, input_bfd, input_section,
00a97672
RS		 5706 contents, rel->r_offset, value,
5707 rel->r_addend);
ba93b8ac 5708
319850b4
JB		 5709 case R_ARM_V4BX:
5710 if (globals->fix_v4bx)
5711 {
5712 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5713
5714 /* Ensure that we have a BX instruction. */
5715 BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
5716
5717 /* Preserve Rm (lowest four bits) and the condition code
5718 (highest four bits). Other bits encode MOV PC,Rm. */
5719 insn = (insn & 0xf000000f) | 0x01a0f000;
5720
5721 bfd_put_32 (input_bfd, insn, hit_data);
5722 }
5723 return bfd_reloc_ok;
5724
b6895b4f
PB		 5725 case R_ARM_MOVW_ABS_NC:
5726 case R_ARM_MOVT_ABS:
5727 case R_ARM_MOVW_PREL_NC:
5728 case R_ARM_MOVT_PREL:
92f5d02b
MS		 5729 /* Until we properly support segment-base-relative addressing then
5730 we assume the segment base to be zero, as for the group relocations.
5731 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
5732 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
5733 case R_ARM_MOVW_BREL_NC:
5734 case R_ARM_MOVW_BREL:
5735 case R_ARM_MOVT_BREL:
b6895b4f
PB		 5736 {
5737 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5738
5739 if (globals->use_rel)
5740 {
5741 addend = ((insn >> 4) & 0xf000) | (insn & 0xfff);
5742 signed_addend = (addend ^ 0x10000) - 0x10000;
5743 }
92f5d02b 5744
b6895b4f 5745 value += signed_addend;
b6895b4f
PB		 5746
5747 if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL)
5748 value -= (input_section->output_section->vma
5749 + input_section->output_offset + rel->r_offset);
5750
92f5d02b
MS		 5751 if (r_type == R_ARM_MOVW_BREL && value >= 0x10000)
5752 return bfd_reloc_overflow;
5753
5754 if (sym_flags == STT_ARM_TFUNC)
5755 value |= 1;
5756
5757 if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL
5758 || r_type == R_ARM_MOVT_BREL)
b6895b4f
PB		 5759 value >>= 16;
5760
5761 insn &= 0xfff0f000;
5762 insn |= value & 0xfff;
5763 insn |= (value & 0xf000) << 4;
5764 bfd_put_32 (input_bfd, insn, hit_data);
5765 }
5766 return bfd_reloc_ok;
5767
5768 case R_ARM_THM_MOVW_ABS_NC:
5769 case R_ARM_THM_MOVT_ABS:
5770 case R_ARM_THM_MOVW_PREL_NC:
5771 case R_ARM_THM_MOVT_PREL:
92f5d02b
MS		 5772 /* Until we properly support segment-base-relative addressing then
5773 we assume the segment base to be zero, as for the above relocations.
5774 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
5775 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
5776 as R_ARM_THM_MOVT_ABS. */
5777 case R_ARM_THM_MOVW_BREL_NC:
5778 case R_ARM_THM_MOVW_BREL:
5779 case R_ARM_THM_MOVT_BREL:
b6895b4f
PB		 5780 {
5781 bfd_vma insn;
5782
5783 insn = bfd_get_16 (input_bfd, hit_data) << 16;
5784 insn |= bfd_get_16 (input_bfd, hit_data + 2);
5785
5786 if (globals->use_rel)
5787 {
5788 addend = ((insn >> 4) & 0xf000)
5789 | ((insn >> 15) & 0x0800)
5790 | ((insn >> 4) & 0x0700)
5791 | (insn & 0x00ff);
5792 signed_addend = (addend ^ 0x10000) - 0x10000;
5793 }
92f5d02b 5794
b6895b4f 5795 value += signed_addend;
b6895b4f
PB		 5796
5797 if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL)
5798 value -= (input_section->output_section->vma
5799 + input_section->output_offset + rel->r_offset);
5800
92f5d02b
MS		 5801 if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000)
5802 return bfd_reloc_overflow;
5803
5804 if (sym_flags == STT_ARM_TFUNC)
5805 value |= 1;
5806
5807 if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL
5808 || r_type == R_ARM_THM_MOVT_BREL)
b6895b4f
PB		 5809 value >>= 16;
5810
5811 insn &= 0xfbf08f00;
5812 insn |= (value & 0xf000) << 4;
5813 insn |= (value & 0x0800) << 15;
5814 insn |= (value & 0x0700) << 4;
5815 insn |= (value & 0x00ff);
5816
5817 bfd_put_16 (input_bfd, insn >> 16, hit_data);
5818 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
5819 }
5820 return bfd_reloc_ok;
5821
4962c51a
MS		 5822 case R_ARM_ALU_PC_G0_NC:
5823 case R_ARM_ALU_PC_G1_NC:
5824 case R_ARM_ALU_PC_G0:
5825 case R_ARM_ALU_PC_G1:
5826 case R_ARM_ALU_PC_G2:
5827 case R_ARM_ALU_SB_G0_NC:
5828 case R_ARM_ALU_SB_G1_NC:
5829 case R_ARM_ALU_SB_G0:
5830 case R_ARM_ALU_SB_G1:
5831 case R_ARM_ALU_SB_G2:
5832 {
5833 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5834 bfd_vma pc = input_section->output_section->vma
5835 + input_section->output_offset + rel->r_offset;
5836 /* sb should be the origin of the *segment* containing the symbol.
5837 It is not clear how to obtain this OS-dependent value, so we
5838 make an arbitrary choice of zero. */
5839 bfd_vma sb = 0;
5840 bfd_vma residual;
5841 bfd_vma g_n;
5842 bfd_signed_vma signed_value;
5843 int group = 0;
5844
5845 /* Determine which group of bits to select. */
5846 switch (r_type)
5847 {
5848 case R_ARM_ALU_PC_G0_NC:
5849 case R_ARM_ALU_PC_G0:
5850 case R_ARM_ALU_SB_G0_NC:
5851 case R_ARM_ALU_SB_G0:
5852 group = 0;
5853 break;
5854
5855 case R_ARM_ALU_PC_G1_NC:
5856 case R_ARM_ALU_PC_G1:
5857 case R_ARM_ALU_SB_G1_NC:
5858 case R_ARM_ALU_SB_G1:
5859 group = 1;
5860 break;
5861
5862 case R_ARM_ALU_PC_G2:
5863 case R_ARM_ALU_SB_G2:
5864 group = 2;
5865 break;
5866
5867 default:
5868 abort();
5869 }
5870
5871 /* If REL, extract the addend from the insn. If RELA, it will
5872 have already been fetched for us. */
5873 if (globals->use_rel)
5874 {
5875 int negative;
5876 bfd_vma constant = insn & 0xff;
5877 bfd_vma rotation = (insn & 0xf00) >> 8;
5878
5879 if (rotation == 0)
5880 signed_addend = constant;
5881 else
5882 {
5883 /* Compensate for the fact that in the instruction, the
5884 rotation is stored in multiples of 2 bits. */
5885 rotation *= 2;
5886
5887 /* Rotate "constant" right by "rotation" bits. */
5888 signed_addend = (constant >> rotation) |
5889 (constant << (8 * sizeof (bfd_vma) - rotation));
5890 }
5891
5892 /* Determine if the instruction is an ADD or a SUB.
5893 (For REL, this determines the sign of the addend.) */
5894 negative = identify_add_or_sub (insn);
5895 if (negative == 0)
5896 {
5897 (*_bfd_error_handler)
5898 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
5899 input_bfd, input_section,
5900 (long) rel->r_offset, howto->name);
5901 return bfd_reloc_overflow;
5902 }
5903
5904 signed_addend *= negative;
5905 }
5906
5907 /* Compute the value (X) to go in the place. */
5908 if (r_type == R_ARM_ALU_PC_G0_NC
5909 || r_type == R_ARM_ALU_PC_G1_NC
5910 || r_type == R_ARM_ALU_PC_G0
5911 || r_type == R_ARM_ALU_PC_G1
5912 || r_type == R_ARM_ALU_PC_G2)
5913 /* PC relative. */
5914 signed_value = value - pc + signed_addend;
5915 else
5916 /* Section base relative. */
5917 signed_value = value - sb + signed_addend;
5918
5919 /* If the target symbol is a Thumb function, then set the
5920 Thumb bit in the address. */
5921 if (sym_flags == STT_ARM_TFUNC)
5922 signed_value |= 1;
5923
5924 /* Calculate the value of the relevant G_n, in encoded
5925 constant-with-rotation format. */
5926 g_n = calculate_group_reloc_mask (abs (signed_value), group,
5927 &residual);
5928
5929 /* Check for overflow if required. */
5930 if ((r_type == R_ARM_ALU_PC_G0
5931 || r_type == R_ARM_ALU_PC_G1
5932 || r_type == R_ARM_ALU_PC_G2
5933 || r_type == R_ARM_ALU_SB_G0
5934 || r_type == R_ARM_ALU_SB_G1
5935 || r_type == R_ARM_ALU_SB_G2) && residual != 0)
5936 {
5937 (*_bfd_error_handler)
5938 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
5939 input_bfd, input_section,
5940 (long) rel->r_offset, abs (signed_value), howto->name);
5941 return bfd_reloc_overflow;
5942 }
5943
5944 /* Mask out the value and the ADD/SUB part of the opcode; take care
5945 not to destroy the S bit. */
5946 insn &= 0xff1ff000;
5947
5948 /* Set the opcode according to whether the value to go in the
5949 place is negative. */
5950 if (signed_value < 0)
5951 insn |= 1 << 22;
5952 else
5953 insn |= 1 << 23;
5954
5955 /* Encode the offset. */
5956 insn |= g_n;
5957
5958 bfd_put_32 (input_bfd, insn, hit_data);
5959 }
5960 return bfd_reloc_ok;
5961
5962 case R_ARM_LDR_PC_G0:
5963 case R_ARM_LDR_PC_G1:
5964 case R_ARM_LDR_PC_G2:
5965 case R_ARM_LDR_SB_G0:
5966 case R_ARM_LDR_SB_G1:
5967 case R_ARM_LDR_SB_G2:
5968 {
5969 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
5970 bfd_vma pc = input_section->output_section->vma
5971 + input_section->output_offset + rel->r_offset;
5972 bfd_vma sb = 0; /* See note above. */
5973 bfd_vma residual;
5974 bfd_signed_vma signed_value;
5975 int group = 0;
5976
5977 /* Determine which groups of bits to calculate. */
5978 switch (r_type)
5979 {
5980 case R_ARM_LDR_PC_G0:
5981 case R_ARM_LDR_SB_G0:
5982 group = 0;
5983 break;
5984
5985 case R_ARM_LDR_PC_G1:
5986 case R_ARM_LDR_SB_G1:
5987 group = 1;
5988 break;
5989
5990 case R_ARM_LDR_PC_G2:
5991 case R_ARM_LDR_SB_G2:
5992 group = 2;
5993 break;
5994
5995 default:
5996 abort();
5997 }
5998
5999 /* If REL, extract the addend from the insn. If RELA, it will
6000 have already been fetched for us. */
6001 if (globals->use_rel)
6002 {
6003 int negative = (insn & (1 << 23)) ? 1 : -1;
6004 signed_addend = negative * (insn & 0xfff);
6005 }
6006
6007 /* Compute the value (X) to go in the place. */
6008 if (r_type == R_ARM_LDR_PC_G0
6009 || r_type == R_ARM_LDR_PC_G1
6010 || r_type == R_ARM_LDR_PC_G2)
6011 /* PC relative. */
6012 signed_value = value - pc + signed_addend;
6013 else
6014 /* Section base relative. */
6015 signed_value = value - sb + signed_addend;
6016
6017 /* Calculate the value of the relevant G_{n-1} to obtain
6018 the residual at that stage. */
6019 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
6020
6021 /* Check for overflow. */
6022 if (residual >= 0x1000)
6023 {
6024 (*_bfd_error_handler)
6025 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6026 input_bfd, input_section,
6027 (long) rel->r_offset, abs (signed_value), howto->name);
6028 return bfd_reloc_overflow;
6029 }
6030
6031 /* Mask out the value and U bit. */
6032 insn &= 0xff7ff000;
6033
6034 /* Set the U bit if the value to go in the place is non-negative. */
6035 if (signed_value >= 0)
6036 insn |= 1 << 23;
6037
6038 /* Encode the offset. */
6039 insn |= residual;
6040
6041 bfd_put_32 (input_bfd, insn, hit_data);
6042 }
6043 return bfd_reloc_ok;
6044
6045 case R_ARM_LDRS_PC_G0:
6046 case R_ARM_LDRS_PC_G1:
6047 case R_ARM_LDRS_PC_G2:
6048 case R_ARM_LDRS_SB_G0:
6049 case R_ARM_LDRS_SB_G1:
6050 case R_ARM_LDRS_SB_G2:
6051 {
6052 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
6053 bfd_vma pc = input_section->output_section->vma
6054 + input_section->output_offset + rel->r_offset;
6055 bfd_vma sb = 0; /* See note above. */
6056 bfd_vma residual;
6057 bfd_signed_vma signed_value;
6058 int group = 0;
6059
6060 /* Determine which groups of bits to calculate. */
6061 switch (r_type)
6062 {
6063 case R_ARM_LDRS_PC_G0:
6064 case R_ARM_LDRS_SB_G0:
6065 group = 0;
6066 break;
6067
6068 case R_ARM_LDRS_PC_G1:
6069 case R_ARM_LDRS_SB_G1:
6070 group = 1;
6071 break;
6072
6073 case R_ARM_LDRS_PC_G2:
6074 case R_ARM_LDRS_SB_G2:
6075 group = 2;
6076 break;
6077
6078 default:
6079 abort();
6080 }
6081
6082 /* If REL, extract the addend from the insn. If RELA, it will
6083 have already been fetched for us. */
6084 if (globals->use_rel)
6085 {
6086 int negative = (insn & (1 << 23)) ? 1 : -1;
6087 signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf));
6088 }
6089
6090 /* Compute the value (X) to go in the place. */
6091 if (r_type == R_ARM_LDRS_PC_G0
6092 || r_type == R_ARM_LDRS_PC_G1
6093 || r_type == R_ARM_LDRS_PC_G2)
6094 /* PC relative. */
6095 signed_value = value - pc + signed_addend;
6096 else
6097 /* Section base relative. */
6098 signed_value = value - sb + signed_addend;
6099
6100 /* Calculate the value of the relevant G_{n-1} to obtain
6101 the residual at that stage. */
6102 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
6103
6104 /* Check for overflow. */
6105 if (residual >= 0x100)
6106 {
6107 (*_bfd_error_handler)
6108 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6109 input_bfd, input_section,
6110 (long) rel->r_offset, abs (signed_value), howto->name);
6111 return bfd_reloc_overflow;
6112 }
6113
6114 /* Mask out the value and U bit. */
6115 insn &= 0xff7ff0f0;
6116
6117 /* Set the U bit if the value to go in the place is non-negative. */
6118 if (signed_value >= 0)
6119 insn |= 1 << 23;
6120
6121 /* Encode the offset. */
6122 insn |= ((residual & 0xf0) << 4) | (residual & 0xf);
6123
6124 bfd_put_32 (input_bfd, insn, hit_data);
6125 }
6126 return bfd_reloc_ok;
6127
6128 case R_ARM_LDC_PC_G0:
6129 case R_ARM_LDC_PC_G1:
6130 case R_ARM_LDC_PC_G2:
6131 case R_ARM_LDC_SB_G0:
6132 case R_ARM_LDC_SB_G1:
6133 case R_ARM_LDC_SB_G2:
6134 {
6135 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
6136 bfd_vma pc = input_section->output_section->vma
6137 + input_section->output_offset + rel->r_offset;
6138 bfd_vma sb = 0; /* See note above. */
6139 bfd_vma residual;
6140 bfd_signed_vma signed_value;
6141 int group = 0;
6142
6143 /* Determine which groups of bits to calculate. */
6144 switch (r_type)
6145 {
6146 case R_ARM_LDC_PC_G0:
6147 case R_ARM_LDC_SB_G0:
6148 group = 0;
6149 break;
6150
6151 case R_ARM_LDC_PC_G1:
6152 case R_ARM_LDC_SB_G1:
6153 group = 1;
6154 break;
6155
6156 case R_ARM_LDC_PC_G2:
6157 case R_ARM_LDC_SB_G2:
6158 group = 2;
6159 break;
6160
6161 default:
6162 abort();
6163 }
6164
6165 /* If REL, extract the addend from the insn. If RELA, it will
6166 have already been fetched for us. */
6167 if (globals->use_rel)
6168 {
6169 int negative = (insn & (1 << 23)) ? 1 : -1;
6170 signed_addend = negative * ((insn & 0xff) << 2);
6171 }
6172
6173 /* Compute the value (X) to go in the place. */
6174 if (r_type == R_ARM_LDC_PC_G0
6175 || r_type == R_ARM_LDC_PC_G1
6176 || r_type == R_ARM_LDC_PC_G2)
6177 /* PC relative. */
6178 signed_value = value - pc + signed_addend;
6179 else
6180 /* Section base relative. */
6181 signed_value = value - sb + signed_addend;
6182
6183 /* Calculate the value of the relevant G_{n-1} to obtain
6184 the residual at that stage. */
6185 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
6186
6187 /* Check for overflow. (The absolute value to go in the place must be
6188 divisible by four and, after having been divided by four, must
6189 fit in eight bits.) */
6190 if ((residual & 0x3) != 0 || residual >= 0x400)
6191 {
6192 (*_bfd_error_handler)
6193 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
6194 input_bfd, input_section,
6195 (long) rel->r_offset, abs (signed_value), howto->name);
6196 return bfd_reloc_overflow;
6197 }
6198
6199 /* Mask out the value and U bit. */
6200 insn &= 0xff7fff00;
6201
6202 /* Set the U bit if the value to go in the place is non-negative. */
6203 if (signed_value >= 0)
6204 insn |= 1 << 23;
6205
6206 /* Encode the offset. */
6207 insn |= residual >> 2;
6208
6209 bfd_put_32 (input_bfd, insn, hit_data);
6210 }
6211 return bfd_reloc_ok;
6212
252b5132
RH		 6213 default:
6214 return bfd_reloc_notsupported;
6215 }
6216}
6217
98c1d4aa
NC		 6218/* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
6219static void
57e8b36a
NC		 6220arm_add_to_rel (bfd * abfd,
6221 bfd_byte * address,
6222 reloc_howto_type * howto,
6223 bfd_signed_vma increment)
98c1d4aa 6224{
98c1d4aa
NC		 6225 bfd_signed_vma addend;
6226
bd97cb95
DJ		 6227 if (howto->type == R_ARM_THM_CALL
6228 || howto->type == R_ARM_THM_JUMP24)
98c1d4aa 6229 {
9a5aca8c
AM		 6230 int upper_insn, lower_insn;
6231 int upper, lower;
98c1d4aa 6232
9a5aca8c
AM		 6233 upper_insn = bfd_get_16 (abfd, address);
6234 lower_insn = bfd_get_16 (abfd, address + 2);
6235 upper = upper_insn & 0x7ff;
6236 lower = lower_insn & 0x7ff;
6237
6238 addend = (upper << 12) | (lower << 1);
ddda4409 6239 addend += increment;
9a5aca8c 6240 addend >>= 1;
98c1d4aa 6241
9a5aca8c
AM		 6242 upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
6243 lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
6244
dc810e39
AM		 6245 bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
6246 bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
9a5aca8c
AM		 6247 }
6248 else
6249 {
6250 bfd_vma contents;
6251
6252 contents = bfd_get_32 (abfd, address);
6253
6254 /* Get the (signed) value from the instruction. */
6255 addend = contents & howto->src_mask;
6256 if (addend & ((howto->src_mask + 1) >> 1))
6257 {
6258 bfd_signed_vma mask;
6259
6260 mask = -1;
6261 mask &= ~ howto->src_mask;
6262 addend |= mask;
6263 }
6264
6265 /* Add in the increment, (which is a byte value). */
6266 switch (howto->type)
6267 {
6268 default:
6269 addend += increment;
6270 break;
6271
6272 case R_ARM_PC24:
c6596c5e 6273 case R_ARM_PLT32:
5b5bb741
PB		 6274 case R_ARM_CALL:
6275 case R_ARM_JUMP24:
9a5aca8c 6276 addend <<= howto->size;
dc810e39 6277 addend += increment;
9a5aca8c
AM		 6278
6279 /* Should we check for overflow here ? */
6280
6281 /* Drop any undesired bits. */
6282 addend >>= howto->rightshift;
6283 break;
6284 }
6285
6286 contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
6287
6288 bfd_put_32 (abfd, contents, address);
ddda4409 6289 }
98c1d4aa 6290}
252b5132 6291
ba93b8ac
DJ		 6292#define IS_ARM_TLS_RELOC(R_TYPE) \
6293 ((R_TYPE) == R_ARM_TLS_GD32 \
6294 || (R_TYPE) == R_ARM_TLS_LDO32 \
6295 || (R_TYPE) == R_ARM_TLS_LDM32 \
6296 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
6297 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
6298 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
6299 || (R_TYPE) == R_ARM_TLS_LE32 \
6300 || (R_TYPE) == R_ARM_TLS_IE32)
6301
252b5132 6302/* Relocate an ARM ELF section. */
b34976b6 6303static bfd_boolean
57e8b36a
NC		 6304elf32_arm_relocate_section (bfd * output_bfd,
6305 struct bfd_link_info * info,
6306 bfd * input_bfd,
6307 asection * input_section,
6308 bfd_byte * contents,
6309 Elf_Internal_Rela * relocs,
6310 Elf_Internal_Sym * local_syms,
6311 asection ** local_sections)
252b5132 6312{
b34976b6
AM		 6313 Elf_Internal_Shdr *symtab_hdr;
6314 struct elf_link_hash_entry **sym_hashes;
6315 Elf_Internal_Rela *rel;
6316 Elf_Internal_Rela *relend;
6317 const char *name;
b32d3aa2 6318 struct elf32_arm_link_hash_table * globals;
252b5132 6319
4e7fd91e 6320 globals = elf32_arm_hash_table (info);
b491616a 6321
252b5132
RH		 6322 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
6323 sym_hashes = elf_sym_hashes (input_bfd);
6324
6325 rel = relocs;
6326 relend = relocs + input_section->reloc_count;
6327 for (; rel < relend; rel++)
6328 {
ba96a88f
NC		 6329 int r_type;
6330 reloc_howto_type * howto;
6331 unsigned long r_symndx;
6332 Elf_Internal_Sym * sym;
6333 asection * sec;
252b5132 6334 struct elf_link_hash_entry * h;
ba96a88f
NC		 6335 bfd_vma relocation;
6336 bfd_reloc_status_type r;
6337 arelent bfd_reloc;
ba93b8ac 6338 char sym_type;
0945cdfd 6339 bfd_boolean unresolved_reloc = FALSE;
f2a9dd69 6340 char *error_message = NULL;
f21f3fe0 6341
252b5132 6342 r_symndx = ELF32_R_SYM (rel->r_info);
ba96a88f 6343 r_type = ELF32_R_TYPE (rel->r_info);
b32d3aa2 6344 r_type = arm_real_reloc_type (globals, r_type);
252b5132 6345
ba96a88f
NC		 6346 if ( r_type == R_ARM_GNU_VTENTRY
6347 || r_type == R_ARM_GNU_VTINHERIT)
252b5132
RH		 6348 continue;
6349
b32d3aa2 6350 bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
ba96a88f 6351 howto = bfd_reloc.howto;
252b5132 6352
252b5132
RH		 6353 h = NULL;
6354 sym = NULL;
6355 sec = NULL;
9b485d32 6356
252b5132
RH		 6357 if (r_symndx < symtab_hdr->sh_info)
6358 {
6359 sym = local_syms + r_symndx;
ba93b8ac 6360 sym_type = ELF32_ST_TYPE (sym->st_info);
252b5132 6361 sec = local_sections[r_symndx];
4e7fd91e 6362 if (globals->use_rel)
f8df10f4 6363 {
4e7fd91e
PB		 6364 relocation = (sec->output_section->vma
6365 + sec->output_offset
6366 + sym->st_value);
ab96bf03
AM		 6367 if (!info->relocatable
6368 && (sec->flags & SEC_MERGE)
6369 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
f8df10f4 6370 {
4e7fd91e
PB		 6371 asection *msec;
6372 bfd_vma addend, value;
6373
6374 if (howto->rightshift)
6375 {
6376 (*_bfd_error_handler)
6377 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
6378 input_bfd, input_section,
6379 (long) rel->r_offset, howto->name);
6380 return FALSE;
6381 }
f8df10f4 6382
4e7fd91e 6383 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
f8df10f4 6384
4e7fd91e
PB		 6385 /* Get the (signed) value from the instruction. */
6386 addend = value & howto->src_mask;
6387 if (addend & ((howto->src_mask + 1) >> 1))
6388 {
6389 bfd_signed_vma mask;
f8df10f4 6390
4e7fd91e
PB		 6391 mask = -1;
6392 mask &= ~ howto->src_mask;
6393 addend |= mask;
6394 }
6395 msec = sec;
6396 addend =
6397 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
6398 - relocation;
6399 addend += msec->output_section->vma + msec->output_offset;
6400 value = (value & ~ howto->dst_mask) | (addend & howto->dst_mask);
6401 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
f8df10f4 6402 }
f8df10f4 6403 }
4e7fd91e
PB		 6404 else
6405 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH		 6406 }
6407 else
6408 {
560e09e9 6409 bfd_boolean warned;
560e09e9 6410
b2a8e766
AM		 6411 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
6412 r_symndx, symtab_hdr, sym_hashes,
6413 h, sec, relocation,
6414 unresolved_reloc, warned);
ba93b8ac
DJ		 6415
6416 sym_type = h->type;
252b5132
RH		 6417 }
6418
ab96bf03
AM		 6419 if (sec != NULL && elf_discarded_section (sec))
6420 {
6421 /* For relocs against symbols from removed linkonce sections,
6422 or sections discarded by a linker script, we just want the
6423 section contents zeroed. Avoid any special processing. */
6424 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
6425 rel->r_info = 0;
6426 rel->r_addend = 0;
6427 continue;
6428 }
6429
6430 if (info->relocatable)
6431 {
6432 /* This is a relocatable link. We don't have to change
6433 anything, unless the reloc is against a section symbol,
6434 in which case we have to adjust according to where the
6435 section symbol winds up in the output section. */
6436 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
6437 {
6438 if (globals->use_rel)
6439 arm_add_to_rel (input_bfd, contents + rel->r_offset,
6440 howto, (bfd_signed_vma) sec->output_offset);
6441 else
6442 rel->r_addend += sec->output_offset;
6443 }
6444 continue;
6445 }
6446
252b5132
RH		 6447 if (h != NULL)
6448 name = h->root.root.string;
6449 else
6450 {
6451 name = (bfd_elf_string_from_elf_section
6452 (input_bfd, symtab_hdr->sh_link, sym->st_name));
6453 if (name == NULL || *name == '\0')
6454 name = bfd_section_name (input_bfd, sec);
6455 }
f21f3fe0 6456
ba93b8ac
DJ		 6457 if (r_symndx != 0
6458 && r_type != R_ARM_NONE
6459 && (h == NULL
6460 || h->root.type == bfd_link_hash_defined
6461 || h->root.type == bfd_link_hash_defweak)
6462 && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
6463 {
6464 (*_bfd_error_handler)
6465 ((sym_type == STT_TLS
6466 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
6467 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
6468 input_bfd,
6469 input_section,
6470 (long) rel->r_offset,
6471 howto->name,
6472 name);
6473 }
6474
252b5132
RH		 6475 r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
6476 input_section, contents, rel,
6477 relocation, info, sec, name,
6478 (h ? ELF_ST_TYPE (h->type) :
0945cdfd 6479 ELF_ST_TYPE (sym->st_info)), h,
f2a9dd69 6480 &unresolved_reloc, &error_message);
0945cdfd
DJ		 6481
6482 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
6483 because such sections are not SEC_ALLOC and thus ld.so will
6484 not process them. */
6485 if (unresolved_reloc
6486 && !((input_section->flags & SEC_DEBUGGING) != 0
6487 && h->def_dynamic))
6488 {
6489 (*_bfd_error_handler)
843fe662
L		 6490 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6491 input_bfd,
6492 input_section,
6493 (long) rel->r_offset,
6494 howto->name,
6495 h->root.root.string);
0945cdfd
DJ		 6496 return FALSE;
6497 }
252b5132
RH		 6498
6499 if (r != bfd_reloc_ok)
6500 {
252b5132
RH		 6501 switch (r)
6502 {
6503 case bfd_reloc_overflow:
cf919dfd
PB		 6504 /* If the overflowing reloc was to an undefined symbol,
6505 we have already printed one error message and there
6506 is no point complaining again. */
6507 if ((! h ||
6508 h->root.type != bfd_link_hash_undefined)
6509 && (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 6510 (info, (h ? &h->root : NULL), name, howto->name,
6511 (bfd_vma) 0, input_bfd, input_section,
6512 rel->r_offset))))
b34976b6 6513 return FALSE;
252b5132
RH		 6514 break;
6515
6516 case bfd_reloc_undefined:
6517 if (!((*info->callbacks->undefined_symbol)
6518 (info, name, input_bfd, input_section,
b34976b6
AM		 6519 rel->r_offset, TRUE)))
6520 return FALSE;
252b5132
RH		 6521 break;
6522
6523 case bfd_reloc_outofrange:
f2a9dd69 6524 error_message = _("out of range");
252b5132
RH		 6525 goto common_error;
6526
6527 case bfd_reloc_notsupported:
f2a9dd69 6528 error_message = _("unsupported relocation");
252b5132
RH		 6529 goto common_error;
6530
6531 case bfd_reloc_dangerous:
f2a9dd69 6532 /* error_message should already be set. */
252b5132
RH		 6533 goto common_error;
6534
6535 default:
f2a9dd69 6536 error_message = _("unknown error");
252b5132
RH		 6537 /* fall through */
6538
6539 common_error:
f2a9dd69
DJ		 6540 BFD_ASSERT (error_message != NULL);
6541 if (!((*info->callbacks->reloc_dangerous)
6542 (info, error_message, input_bfd, input_section,
252b5132 6543 rel->r_offset)))
b34976b6 6544 return FALSE;
252b5132
RH		 6545 break;
6546 }
6547 }
6548 }
6549
b34976b6 6550 return TRUE;
252b5132
RH		 6551}
6552
c178919b
NC		 6553/* Set the right machine number. */
6554
6555static bfd_boolean
57e8b36a 6556elf32_arm_object_p (bfd *abfd)
c178919b 6557{
5a6c6817 6558 unsigned int mach;
57e8b36a 6559
5a6c6817 6560 mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
c178919b 6561
5a6c6817
NC		 6562 if (mach != bfd_mach_arm_unknown)
6563 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
6564
6565 else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
6566 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
e16bb312 6567
e16bb312 6568 else
5a6c6817 6569 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
c178919b
NC		 6570
6571 return TRUE;
6572}
6573
fc830a83 6574/* Function to keep ARM specific flags in the ELF header. */
3c9458e9 6575
b34976b6 6576static bfd_boolean
57e8b36a 6577elf32_arm_set_private_flags (bfd *abfd, flagword flags)
252b5132
RH		 6578{
6579 if (elf_flags_init (abfd)
6580 && elf_elfheader (abfd)->e_flags != flags)
6581 {
fc830a83
NC		 6582 if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
6583 {
fd2ec330 6584 if (flags & EF_ARM_INTERWORK)
d003868e
AM		 6585 (*_bfd_error_handler)
6586 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
6587 abfd);
fc830a83 6588 else
d003868e
AM		 6589 _bfd_error_handler
6590 (_("Warning: Clearing the interworking flag of %B due to outside request"),
6591 abfd);
fc830a83 6592 }
252b5132
RH		 6593 }
6594 else
6595 {
6596 elf_elfheader (abfd)->e_flags = flags;
b34976b6 6597 elf_flags_init (abfd) = TRUE;
252b5132
RH		 6598 }
6599
b34976b6 6600 return TRUE;
252b5132
RH		 6601}
6602
fc830a83 6603/* Copy backend specific data from one object module to another. */
9b485d32 6604
b34976b6 6605static bfd_boolean
57e8b36a 6606elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
252b5132
RH		 6607{
6608 flagword in_flags;
6609 flagword out_flags;
6610
fc830a83 6611 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
252b5132 6612 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 6613 return TRUE;
252b5132 6614
fc830a83 6615 in_flags = elf_elfheader (ibfd)->e_flags;
252b5132
RH		 6616 out_flags = elf_elfheader (obfd)->e_flags;
6617
fc830a83
NC		 6618 if (elf_flags_init (obfd)
6619 && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
6620 && in_flags != out_flags)
252b5132 6621 {
252b5132 6622 /* Cannot mix APCS26 and APCS32 code. */
fd2ec330 6623 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
b34976b6 6624 return FALSE;
252b5132
RH		 6625
6626 /* Cannot mix float APCS and non-float APCS code. */
fd2ec330 6627 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
b34976b6 6628 return FALSE;
252b5132
RH		 6629
6630 /* If the src and dest have different interworking flags
6631 then turn off the interworking bit. */
fd2ec330 6632 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
252b5132 6633 {
fd2ec330 6634 if (out_flags & EF_ARM_INTERWORK)
d003868e
AM		 6635 _bfd_error_handler
6636 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
6637 obfd, ibfd);
252b5132 6638
fd2ec330 6639 in_flags &= ~EF_ARM_INTERWORK;
252b5132 6640 }
1006ba19
PB		 6641
6642 /* Likewise for PIC, though don't warn for this case. */
fd2ec330
PB		 6643 if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
6644 in_flags &= ~EF_ARM_PIC;
252b5132
RH		 6645 }
6646
6647 elf_elfheader (obfd)->e_flags = in_flags;
b34976b6 6648 elf_flags_init (obfd) = TRUE;
252b5132 6649
94a3258f
PB		 6650 /* Also copy the EI_OSABI field. */
6651 elf_elfheader (obfd)->e_ident[EI_OSABI] =
6652 elf_elfheader (ibfd)->e_ident[EI_OSABI];
6653
104d59d1
JM		 6654 /* Copy object attributes. */
6655 _bfd_elf_copy_obj_attributes (ibfd, obfd);
ee065d83
PB		 6656
6657 return TRUE;
6658}
6659
6660/* Values for Tag_ABI_PCS_R9_use. */
6661enum
6662{
6663 AEABI_R9_V6,
6664 AEABI_R9_SB,
6665 AEABI_R9_TLS,
6666 AEABI_R9_unused
6667};
6668
6669/* Values for Tag_ABI_PCS_RW_data. */
6670enum
6671{
6672 AEABI_PCS_RW_data_absolute,
6673 AEABI_PCS_RW_data_PCrel,
6674 AEABI_PCS_RW_data_SBrel,
6675 AEABI_PCS_RW_data_unused
6676};
6677
6678/* Values for Tag_ABI_enum_size. */
6679enum
6680{
6681 AEABI_enum_unused,
6682 AEABI_enum_short,
6683 AEABI_enum_wide,
6684 AEABI_enum_forced_wide
6685};
6686
104d59d1
JM		 6687/* Determine whether an object attribute tag takes an integer, a
6688 string or both. */
6689static int
6690elf32_arm_obj_attrs_arg_type (int tag)
6691{
6692 if (tag == Tag_compatibility)
6693 return 3;
6694 else if (tag == 4 || tag == 5)
6695 return 2;
6696 else if (tag < 32)
6697 return 1;
6698 else
6699 return (tag & 1) != 0 ? 2 : 1;
6700}
6701
ee065d83
PB		 6702/* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
6703 are conflicting attributes. */
6704static bfd_boolean
6705elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
6706{
104d59d1
JM		 6707 obj_attribute *in_attr;
6708 obj_attribute *out_attr;
6709 obj_attribute_list *in_list;
ee065d83
PB		 6710 /* Some tags have 0 = don't care, 1 = strong requirement,
6711 2 = weak requirement. */
6712 static const int order_312[3] = {3, 1, 2};
6713 int i;
6714
104d59d1 6715 if (!elf_known_obj_attributes_proc (obfd)[0].i)
ee065d83
PB		 6716 {
6717 /* This is the first object. Copy the attributes. */
104d59d1 6718 _bfd_elf_copy_obj_attributes (ibfd, obfd);
004ae526
PB		 6719
6720 /* Use the Tag_null value to indicate the attributes have been
6721 initialized. */
104d59d1 6722 elf_known_obj_attributes_proc (obfd)[0].i = 1;
004ae526 6723
ee065d83
PB		 6724 return TRUE;
6725 }
6726
104d59d1
JM		 6727 in_attr = elf_known_obj_attributes_proc (ibfd);
6728 out_attr = elf_known_obj_attributes_proc (obfd);
ee065d83
PB		 6729 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
6730 if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i)
6731 {
6732 /* Ignore mismatches if teh object doesn't use floating point. */
6733 if (out_attr[Tag_ABI_FP_number_model].i == 0)
6734 out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i;
6735 else if (in_attr[Tag_ABI_FP_number_model].i != 0)
6736 {
6737 _bfd_error_handler
6738 (_("ERROR: %B uses VFP register arguments, %B does not"),
6739 ibfd, obfd);
6740 return FALSE;
6741 }
6742 }
6743
104d59d1 6744 for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
ee065d83
PB		 6745 {
6746 /* Merge this attribute with existing attributes. */
6747 switch (i)
6748 {
6749 case Tag_CPU_raw_name:
6750 case Tag_CPU_name:
004ae526
PB		 6751 /* Use whichever has the greatest architecture requirements. We
6752 won't necessarily have both the above tags, so make sure input
6753 name is non-NULL. */
6754 if (in_attr[Tag_CPU_arch].i > out_attr[Tag_CPU_arch].i
6755 && in_attr[i].s)
104d59d1 6756 out_attr[i].s = _bfd_elf_attr_strdup (obfd, in_attr[i].s);
ee065d83
PB		 6757 break;
6758
6759 case Tag_ABI_optimization_goals:
6760 case Tag_ABI_FP_optimization_goals:
6761 /* Use the first value seen. */
6762 break;
6763
6764 case Tag_CPU_arch:
6765 case Tag_ARM_ISA_use:
6766 case Tag_THUMB_ISA_use:
6767 case Tag_VFP_arch:
6768 case Tag_WMMX_arch:
6769 case Tag_NEON_arch:
6770 /* ??? Do NEON and WMMX conflict? */
6771 case Tag_ABI_FP_rounding:
6772 case Tag_ABI_FP_denormal:
6773 case Tag_ABI_FP_exceptions:
6774 case Tag_ABI_FP_user_exceptions:
6775 case Tag_ABI_FP_number_model:
6776 case Tag_ABI_align8_preserved:
6777 case Tag_ABI_HardFP_use:
6778 /* Use the largest value specified. */
6779 if (in_attr[i].i > out_attr[i].i)
6780 out_attr[i].i = in_attr[i].i;
6781 break;
6782
6783 case Tag_CPU_arch_profile:
6784 /* Warn if conflicting architecture profiles used. */
6785 if (out_attr[i].i && in_attr[i].i && in_attr[i].i != out_attr[i].i)
6786 {
6787 _bfd_error_handler
6788 (_("ERROR: %B: Conflicting architecture profiles %c/%c"),
6789 ibfd, in_attr[i].i, out_attr[i].i);
6790 return FALSE;
6791 }
6792 if (in_attr[i].i)
6793 out_attr[i].i = in_attr[i].i;
6794 break;
6795 case Tag_PCS_config:
6796 if (out_attr[i].i == 0)
6797 out_attr[i].i = in_attr[i].i;
6798 else if (in_attr[i].i != 0 && out_attr[i].i != 0)
6799 {
6800 /* It's sometimes ok to mix different configs, so this is only
6801 a warning. */
6802 _bfd_error_handler
6803 (_("Warning: %B: Conflicting platform configuration"), ibfd);
6804 }
6805 break;
6806 case Tag_ABI_PCS_R9_use:
004ae526
PB		 6807 if (in_attr[i].i != out_attr[i].i
6808 && out_attr[i].i != AEABI_R9_unused
ee065d83
PB		 6809 && in_attr[i].i != AEABI_R9_unused)
6810 {
6811 _bfd_error_handler
6812 (_("ERROR: %B: Conflicting use of R9"), ibfd);
6813 return FALSE;
6814 }
6815 if (out_attr[i].i == AEABI_R9_unused)
6816 out_attr[i].i = in_attr[i].i;
6817 break;
6818 case Tag_ABI_PCS_RW_data:
6819 if (in_attr[i].i == AEABI_PCS_RW_data_SBrel
6820 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB
6821 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused)
6822 {
6823 _bfd_error_handler
6824 (_("ERROR: %B: SB relative addressing conflicts with use of R9"),
6825 ibfd);
6826 return FALSE;
6827 }
6828 /* Use the smallest value specified. */
6829 if (in_attr[i].i < out_attr[i].i)
6830 out_attr[i].i = in_attr[i].i;
6831 break;
6832 case Tag_ABI_PCS_RO_data:
6833 /* Use the smallest value specified. */
6834 if (in_attr[i].i < out_attr[i].i)
6835 out_attr[i].i = in_attr[i].i;
6836 break;
6837 case Tag_ABI_PCS_GOT_use:
6838 if (in_attr[i].i > 2 || out_attr[i].i > 2
6839 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
6840 out_attr[i].i = in_attr[i].i;
6841 break;
6842 case Tag_ABI_PCS_wchar_t:
6843 if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i)
6844 {
6845 _bfd_error_handler
6846 (_("ERROR: %B: Conflicting definitions of wchar_t"), ibfd);
6847 return FALSE;
6848 }
6849 if (in_attr[i].i)
6850 out_attr[i].i = in_attr[i].i;
6851 break;
6852 case Tag_ABI_align8_needed:
6853 /* ??? Check against Tag_ABI_align8_preserved. */
6854 if (in_attr[i].i > 2 || out_attr[i].i > 2
6855 || order_312[in_attr[i].i] < order_312[out_attr[i].i])
6856 out_attr[i].i = in_attr[i].i;
6857 break;
6858 case Tag_ABI_enum_size:
6859 if (in_attr[i].i != AEABI_enum_unused)
6860 {
6861 if (out_attr[i].i == AEABI_enum_unused
6862 || out_attr[i].i == AEABI_enum_forced_wide)
6863 {
6864 /* The existing object is compatible with anything.
6865 Use whatever requirements the new object has. */
6866 out_attr[i].i = in_attr[i].i;
6867 }
6868 else if (in_attr[i].i != AEABI_enum_forced_wide
bf21ed78
MS		 6869 && out_attr[i].i != in_attr[i].i
6870 && !elf32_arm_tdata (obfd)->no_enum_size_warning)
ee065d83 6871 {
bf21ed78
MS		 6872 const char *aeabi_enum_names[] =
6873 { "", "variable-size", "32-bit", "" };
ee065d83 6874 _bfd_error_handler
bf21ed78
MS		 6875 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
6876 ibfd, aeabi_enum_names[in_attr[i].i],
6877 aeabi_enum_names[out_attr[i].i]);
ee065d83
PB		 6878 }
6879 }
6880 break;
6881 case Tag_ABI_VFP_args:
6882 /* Aready done. */
6883 break;
6884 case Tag_ABI_WMMX_args:
6885 if (in_attr[i].i != out_attr[i].i)
6886 {
6887 _bfd_error_handler
6888 (_("ERROR: %B uses iWMMXt register arguments, %B does not"),
6889 ibfd, obfd);
6890 return FALSE;
6891 }
6892 break;
6893 default: /* All known attributes should be explicitly covered. */
6894 abort ();
6895 }
3cfad14c
JM		 6896
6897 if (in_attr[i].type && !out_attr[i].type)
6898 switch (in_attr[i].type)
6899 {
6900 case 1:
6901 if (out_attr[i].i)
6902 out_attr[i].type = 1;
6903 break;
6904
6905 case 2:
6906 if (out_attr[i].s)
6907 out_attr[i].type = 2;
6908 break;
6909
6910 default:
6911 abort ();
6912 }
ee065d83
PB		 6913 }
6914
104d59d1
JM		 6915 /* Merge Tag_compatibility attributes and any common GNU ones. */
6916 _bfd_elf_merge_object_attributes (ibfd, obfd);
ee065d83 6917
104d59d1
JM		 6918 /* Check for any attributes not known on ARM. */
6919 in_list = elf_other_obj_attributes_proc (ibfd);
6920 while (in_list && in_list->tag == Tag_compatibility)
6921 in_list = in_list->next;
ee065d83
PB		 6922
6923 for (; in_list; in_list = in_list->next)
6924 {
6925 if ((in_list->tag & 128) < 64)
eb111b1f
BE		 6926 {
6927 _bfd_error_handler
6928 (_("Warning: %B: Unknown EABI object attribute %d"),
6929 ibfd, in_list->tag);
6930 break;
6931 }
ee065d83 6932 }
b34976b6 6933 return TRUE;
252b5132
RH		 6934}
6935
3a4a14e9
PB		 6936
6937/* Return TRUE if the two EABI versions are incompatible. */
6938
6939static bfd_boolean
6940elf32_arm_versions_compatible (unsigned iver, unsigned over)
6941{
6942 /* v4 and v5 are the same spec before and after it was released,
6943 so allow mixing them. */
6944 if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5)
6945 || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4))
6946 return TRUE;
6947
6948 return (iver == over);
6949}
6950
252b5132
RH		 6951/* Merge backend specific data from an object file to the output
6952 object file when linking. */
9b485d32 6953
b34976b6 6954static bfd_boolean
57e8b36a 6955elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
252b5132
RH		 6956{
6957 flagword out_flags;
6958 flagword in_flags;
b34976b6 6959 bfd_boolean flags_compatible = TRUE;
cf919dfd 6960 asection *sec;
252b5132 6961
9b485d32 6962 /* Check if we have the same endianess. */
82e51918 6963 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
b34976b6 6964 return FALSE;
1fe494a5 6965
252b5132
RH		 6966 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
6967 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 6968 return TRUE;
252b5132 6969
ee065d83
PB		 6970 if (!elf32_arm_merge_eabi_attributes (ibfd, obfd))
6971 return FALSE;
6972
252b5132
RH		 6973 /* The input BFD must have had its flags initialised. */
6974 /* The following seems bogus to me -- The flags are initialized in
6975 the assembler but I don't think an elf_flags_init field is
9b485d32 6976 written into the object. */
252b5132
RH		 6977 /* BFD_ASSERT (elf_flags_init (ibfd)); */
6978
6979 in_flags = elf_elfheader (ibfd)->e_flags;
6980 out_flags = elf_elfheader (obfd)->e_flags;
6981
6982 if (!elf_flags_init (obfd))
6983 {
fe077fa6
NC		 6984 /* If the input is the default architecture and had the default
6985 flags then do not bother setting the flags for the output
6986 architecture, instead allow future merges to do this. If no
6987 future merges ever set these flags then they will retain their
6988 uninitialised values, which surprise surprise, correspond
252b5132 6989 to the default values. */
fe077fa6
NC		 6990 if (bfd_get_arch_info (ibfd)->the_default
6991 && elf_elfheader (ibfd)->e_flags == 0)
b34976b6 6992 return TRUE;
252b5132 6993
b34976b6 6994 elf_flags_init (obfd) = TRUE;
252b5132
RH		 6995 elf_elfheader (obfd)->e_flags = in_flags;
6996
6997 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
6998 && bfd_get_arch_info (obfd)->the_default)
6999 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
7000
b34976b6 7001 return TRUE;
252b5132
RH		 7002 }
7003
5a6c6817
NC		 7004 /* Determine what should happen if the input ARM architecture
7005 does not match the output ARM architecture. */
7006 if (! bfd_arm_merge_machines (ibfd, obfd))
7007 return FALSE;
e16bb312 7008
1006ba19 7009 /* Identical flags must be compatible. */
252b5132 7010 if (in_flags == out_flags)
b34976b6 7011 return TRUE;
252b5132 7012
35a0f415
DJ		 7013 /* Check to see if the input BFD actually contains any sections. If
7014 not, its flags may not have been initialised either, but it
8e3de13a 7015 cannot actually cause any incompatiblity. Do not short-circuit
35a0f415 7016 dynamic objects; their section list may be emptied by
d1f161ea 7017 elf_link_add_object_symbols.
35a0f415 7018
d1f161ea
NC		 7019 Also check to see if there are no code sections in the input.
7020 In this case there is no need to check for code specific flags.
7021 XXX - do we need to worry about floating-point format compatability
7022 in data sections ? */
35a0f415 7023 if (!(ibfd->flags & DYNAMIC))
cf919dfd 7024 {
35a0f415 7025 bfd_boolean null_input_bfd = TRUE;
d1f161ea 7026 bfd_boolean only_data_sections = TRUE;
35a0f415
DJ		 7027
7028 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
cf919dfd 7029 {
35a0f415
DJ		 7030 /* Ignore synthetic glue sections. */
7031 if (strcmp (sec->name, ".glue_7")
7032 && strcmp (sec->name, ".glue_7t"))
7033 {
d1f161ea
NC		 7034 if ((bfd_get_section_flags (ibfd, sec)
7035 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
7036 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
7037 only_data_sections = FALSE;
7038
35a0f415
DJ		 7039 null_input_bfd = FALSE;
7040 break;
7041 }
cf919dfd 7042 }
d1f161ea
NC		 7043
7044 if (null_input_bfd || only_data_sections)
35a0f415 7045 return TRUE;
cf919dfd 7046 }
cf919dfd 7047
252b5132 7048 /* Complain about various flag mismatches. */
3a4a14e9
PB		 7049 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags),
7050 EF_ARM_EABI_VERSION (out_flags)))
fc830a83 7051 {
d003868e 7052 _bfd_error_handler
3656d5e3 7053 (_("ERROR: Source object %B has EABI version %d, but target %B has EABI version %d"),
d003868e
AM		 7054 ibfd, obfd,
7055 (in_flags & EF_ARM_EABIMASK) >> 24,
7056 (out_flags & EF_ARM_EABIMASK) >> 24);
b34976b6 7057 return FALSE;
fc830a83 7058 }
252b5132 7059
1006ba19 7060 /* Not sure what needs to be checked for EABI versions >= 1. */
00a97672
RS		 7061 /* VxWorks libraries do not use these flags. */
7062 if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed
7063 && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed
7064 && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
1006ba19 7065 {
fd2ec330 7066 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
1006ba19 7067 {
d003868e
AM		 7068 _bfd_error_handler
7069 (_("ERROR: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
7070 ibfd, obfd,
7071 in_flags & EF_ARM_APCS_26 ? 26 : 32,
7072 out_flags & EF_ARM_APCS_26 ? 26 : 32);
b34976b6 7073 flags_compatible = FALSE;
1006ba19 7074 }
252b5132 7075
fd2ec330 7076 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
1006ba19 7077 {
5eefb65f 7078 if (in_flags & EF_ARM_APCS_FLOAT)
d003868e
AM		 7079 _bfd_error_handler
7080 (_("ERROR: %B passes floats in float registers, whereas %B passes them in integer registers"),
7081 ibfd, obfd);
5eefb65f 7082 else
d003868e
AM		 7083 _bfd_error_handler
7084 (_("ERROR: %B passes floats in integer registers, whereas %B passes them in float registers"),
7085 ibfd, obfd);
63b0f745 7086
b34976b6 7087 flags_compatible = FALSE;
1006ba19 7088 }
252b5132 7089
96a846ea 7090 if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
1006ba19 7091 {
96a846ea 7092 if (in_flags & EF_ARM_VFP_FLOAT)
d003868e
AM		 7093 _bfd_error_handler
7094 (_("ERROR: %B uses VFP instructions, whereas %B does not"),
7095 ibfd, obfd);
5eefb65f 7096 else
d003868e
AM		 7097 _bfd_error_handler
7098 (_("ERROR: %B uses FPA instructions, whereas %B does not"),
7099 ibfd, obfd);
fde78edd
NC		 7100
7101 flags_compatible = FALSE;
7102 }
7103
7104 if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
7105 {
7106 if (in_flags & EF_ARM_MAVERICK_FLOAT)
d003868e
AM		 7107 _bfd_error_handler
7108 (_("ERROR: %B uses Maverick instructions, whereas %B does not"),
7109 ibfd, obfd);
fde78edd 7110 else
d003868e
AM		 7111 _bfd_error_handler
7112 (_("ERROR: %B does not use Maverick instructions, whereas %B does"),
7113 ibfd, obfd);
63b0f745 7114
b34976b6 7115 flags_compatible = FALSE;
1006ba19 7116 }
96a846ea
RE		 7117
7118#ifdef EF_ARM_SOFT_FLOAT
7119 if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
7120 {
7121 /* We can allow interworking between code that is VFP format
7122 layout, and uses either soft float or integer regs for
7123 passing floating point arguments and results. We already
7124 know that the APCS_FLOAT flags match; similarly for VFP
7125 flags. */
7126 if ((in_flags & EF_ARM_APCS_FLOAT) != 0
7127 || (in_flags & EF_ARM_VFP_FLOAT) == 0)
7128 {
7129 if (in_flags & EF_ARM_SOFT_FLOAT)
d003868e
AM		 7130 _bfd_error_handler
7131 (_("ERROR: %B uses software FP, whereas %B uses hardware FP"),
7132 ibfd, obfd);
96a846ea 7133 else
d003868e
AM		 7134 _bfd_error_handler
7135 (_("ERROR: %B uses hardware FP, whereas %B uses software FP"),
7136 ibfd, obfd);
96a846ea 7137
b34976b6 7138 flags_compatible = FALSE;
96a846ea
RE		 7139 }
7140 }
ee43f35e 7141#endif
252b5132 7142
1006ba19 7143 /* Interworking mismatch is only a warning. */
fd2ec330 7144 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
8f615d07 7145 {
e3c8793a
NC		 7146 if (in_flags & EF_ARM_INTERWORK)
7147 {
d003868e
AM		 7148 _bfd_error_handler
7149 (_("Warning: %B supports interworking, whereas %B does not"),
7150 ibfd, obfd);
e3c8793a
NC		 7151 }
7152 else
7153 {
d003868e
AM		 7154 _bfd_error_handler
7155 (_("Warning: %B does not support interworking, whereas %B does"),
7156 ibfd, obfd);
e3c8793a 7157 }
8f615d07 7158 }
252b5132 7159 }
63b0f745 7160
1006ba19 7161 return flags_compatible;
252b5132
RH		 7162}
7163
9b485d32
NC		 7164/* Display the flags field. */
7165
b34976b6 7166static bfd_boolean
57e8b36a 7167elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
252b5132 7168{
fc830a83
NC		 7169 FILE * file = (FILE *) ptr;
7170 unsigned long flags;
252b5132
RH		 7171
7172 BFD_ASSERT (abfd != NULL && ptr != NULL);
7173
7174 /* Print normal ELF private data. */
7175 _bfd_elf_print_private_bfd_data (abfd, ptr);
7176
fc830a83 7177 flags = elf_elfheader (abfd)->e_flags;
9b485d32
NC		 7178 /* Ignore init flag - it may not be set, despite the flags field
7179 containing valid data. */
252b5132
RH		 7180
7181 /* xgettext:c-format */
9b485d32 7182 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
252b5132 7183
fc830a83
NC		 7184 switch (EF_ARM_EABI_VERSION (flags))
7185 {
7186 case EF_ARM_EABI_UNKNOWN:
4cc11e76 7187 /* The following flag bits are GNU extensions and not part of the
fc830a83
NC		 7188 official ARM ELF extended ABI. Hence they are only decoded if
7189 the EABI version is not set. */
fd2ec330 7190 if (flags & EF_ARM_INTERWORK)
9b485d32 7191 fprintf (file, _(" [interworking enabled]"));
9a5aca8c 7192
fd2ec330 7193 if (flags & EF_ARM_APCS_26)
6c571f00 7194 fprintf (file, " [APCS-26]");
fc830a83 7195 else
6c571f00 7196 fprintf (file, " [APCS-32]");
9a5aca8c 7197
96a846ea
RE		 7198 if (flags & EF_ARM_VFP_FLOAT)
7199 fprintf (file, _(" [VFP float format]"));
fde78edd
NC		 7200 else if (flags & EF_ARM_MAVERICK_FLOAT)
7201 fprintf (file, _(" [Maverick float format]"));
96a846ea
RE		 7202 else
7203 fprintf (file, _(" [FPA float format]"));
7204
fd2ec330 7205 if (flags & EF_ARM_APCS_FLOAT)
9b485d32 7206 fprintf (file, _(" [floats passed in float registers]"));
9a5aca8c 7207
fd2ec330 7208 if (flags & EF_ARM_PIC)
9b485d32 7209 fprintf (file, _(" [position independent]"));
fc830a83 7210
fd2ec330 7211 if (flags & EF_ARM_NEW_ABI)
9b485d32 7212 fprintf (file, _(" [new ABI]"));
9a5aca8c 7213
fd2ec330 7214 if (flags & EF_ARM_OLD_ABI)
9b485d32 7215 fprintf (file, _(" [old ABI]"));
9a5aca8c 7216
fd2ec330 7217 if (flags & EF_ARM_SOFT_FLOAT)
9b485d32 7218 fprintf (file, _(" [software FP]"));
9a5aca8c 7219
96a846ea
RE		 7220 flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
7221 | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
fde78edd
NC		 7222 | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
7223 | EF_ARM_MAVERICK_FLOAT);
fc830a83 7224 break;
9a5aca8c 7225
fc830a83 7226 case EF_ARM_EABI_VER1:
9b485d32 7227 fprintf (file, _(" [Version1 EABI]"));
9a5aca8c 7228
fc830a83 7229 if (flags & EF_ARM_SYMSARESORTED)
9b485d32 7230 fprintf (file, _(" [sorted symbol table]"));
fc830a83 7231 else
9b485d32 7232 fprintf (file, _(" [unsorted symbol table]"));
9a5aca8c 7233
fc830a83
NC		 7234 flags &= ~ EF_ARM_SYMSARESORTED;
7235 break;
9a5aca8c 7236
fd2ec330
PB		 7237 case EF_ARM_EABI_VER2:
7238 fprintf (file, _(" [Version2 EABI]"));
7239
7240 if (flags & EF_ARM_SYMSARESORTED)
7241 fprintf (file, _(" [sorted symbol table]"));
7242 else
7243 fprintf (file, _(" [unsorted symbol table]"));
7244
7245 if (flags & EF_ARM_DYNSYMSUSESEGIDX)
7246 fprintf (file, _(" [dynamic symbols use segment index]"));
7247
7248 if (flags & EF_ARM_MAPSYMSFIRST)
7249 fprintf (file, _(" [mapping symbols precede others]"));
7250
99e4ae17 7251 flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
fd2ec330
PB		 7252 | EF_ARM_MAPSYMSFIRST);
7253 break;
7254
d507cf36
PB		 7255 case EF_ARM_EABI_VER3:
7256 fprintf (file, _(" [Version3 EABI]"));
8cb51566
PB		 7257 break;
7258
7259 case EF_ARM_EABI_VER4:
7260 fprintf (file, _(" [Version4 EABI]"));
3a4a14e9 7261 goto eabi;
d507cf36 7262
3a4a14e9
PB		 7263 case EF_ARM_EABI_VER5:
7264 fprintf (file, _(" [Version5 EABI]"));
7265 eabi:
d507cf36
PB		 7266 if (flags & EF_ARM_BE8)
7267 fprintf (file, _(" [BE8]"));
7268
7269 if (flags & EF_ARM_LE8)
7270 fprintf (file, _(" [LE8]"));
7271
7272 flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
7273 break;
7274
fc830a83 7275 default:
9b485d32 7276 fprintf (file, _(" <EABI version unrecognised>"));
fc830a83
NC		 7277 break;
7278 }
252b5132 7279
fc830a83 7280 flags &= ~ EF_ARM_EABIMASK;
252b5132 7281
fc830a83 7282 if (flags & EF_ARM_RELEXEC)
9b485d32 7283 fprintf (file, _(" [relocatable executable]"));
252b5132 7284
fc830a83 7285 if (flags & EF_ARM_HASENTRY)
9b485d32 7286 fprintf (file, _(" [has entry point]"));
252b5132 7287
fc830a83
NC		 7288 flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
7289
7290 if (flags)
9b485d32 7291 fprintf (file, _("<Unrecognised flag bits set>"));
9a5aca8c 7292
252b5132
RH		 7293 fputc ('\n', file);
7294
b34976b6 7295 return TRUE;
252b5132
RH		 7296}
7297
7298static int
57e8b36a 7299elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
252b5132 7300{
2f0ca46a
NC		 7301 switch (ELF_ST_TYPE (elf_sym->st_info))
7302 {
7303 case STT_ARM_TFUNC:
7304 return ELF_ST_TYPE (elf_sym->st_info);
ce855c42 7305
2f0ca46a
NC		 7306 case STT_ARM_16BIT:
7307 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
7308 This allows us to distinguish between data used by Thumb instructions
7309 and non-data (which is probably code) inside Thumb regions of an
7310 executable. */
1a0eb693 7311 if (type != STT_OBJECT && type != STT_TLS)
2f0ca46a
NC		 7312 return ELF_ST_TYPE (elf_sym->st_info);
7313 break;
9a5aca8c 7314
ce855c42
NC		 7315 default:
7316 break;
2f0ca46a
NC		 7317 }
7318
7319 return type;
252b5132 7320}
f21f3fe0 7321
252b5132 7322static asection *
07adf181
AM		 7323elf32_arm_gc_mark_hook (asection *sec,
7324 struct bfd_link_info *info,
7325 Elf_Internal_Rela *rel,
7326 struct elf_link_hash_entry *h,
7327 Elf_Internal_Sym *sym)
252b5132
RH		 7328{
7329 if (h != NULL)
07adf181 7330 switch (ELF32_R_TYPE (rel->r_info))
252b5132
RH		 7331 {
7332 case R_ARM_GNU_VTINHERIT:
7333 case R_ARM_GNU_VTENTRY:
07adf181
AM		 7334 return NULL;
7335 }
9ad5cbcf 7336
07adf181 7337 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 7338}
7339
780a67af
NC		 7340/* Update the got entry reference counts for the section being removed. */
7341
b34976b6 7342static bfd_boolean
ba93b8ac
DJ		 7343elf32_arm_gc_sweep_hook (bfd * abfd,
7344 struct bfd_link_info * info,
7345 asection * sec,
7346 const Elf_Internal_Rela * relocs)
252b5132 7347{
5e681ec4
PB		 7348 Elf_Internal_Shdr *symtab_hdr;
7349 struct elf_link_hash_entry **sym_hashes;
7350 bfd_signed_vma *local_got_refcounts;
7351 const Elf_Internal_Rela *rel, *relend;
eb043451
PB		 7352 struct elf32_arm_link_hash_table * globals;
7353
7dda2462
TG		 7354 if (info->relocatable)
7355 return TRUE;
7356
eb043451 7357 globals = elf32_arm_hash_table (info);
5e681ec4
PB		 7358
7359 elf_section_data (sec)->local_dynrel = NULL;
7360
7361 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
7362 sym_hashes = elf_sym_hashes (abfd);
7363 local_got_refcounts = elf_local_got_refcounts (abfd);
7364
bd97cb95
DJ		 7365 check_use_blx(globals);
7366
5e681ec4
PB		 7367 relend = relocs + sec->reloc_count;
7368 for (rel = relocs; rel < relend; rel++)
eb043451 7369 {
3eb128b2
AM		 7370 unsigned long r_symndx;
7371 struct elf_link_hash_entry *h = NULL;
eb043451 7372 int r_type;
5e681ec4 7373
3eb128b2
AM		 7374 r_symndx = ELF32_R_SYM (rel->r_info);
7375 if (r_symndx >= symtab_hdr->sh_info)
7376 {
7377 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7378 while (h->root.type == bfd_link_hash_indirect
7379 || h->root.type == bfd_link_hash_warning)
7380 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7381 }
7382
eb043451 7383 r_type = ELF32_R_TYPE (rel->r_info);
eb043451 7384 r_type = arm_real_reloc_type (globals, r_type);
eb043451
PB		 7385 switch (r_type)
7386 {
7387 case R_ARM_GOT32:
eb043451 7388 case R_ARM_GOT_PREL:
ba93b8ac
DJ		 7389 case R_ARM_TLS_GD32:
7390 case R_ARM_TLS_IE32:
3eb128b2 7391 if (h != NULL)
eb043451 7392 {
eb043451
PB		 7393 if (h->got.refcount > 0)
7394 h->got.refcount -= 1;
7395 }
7396 else if (local_got_refcounts != NULL)
7397 {
7398 if (local_got_refcounts[r_symndx] > 0)
7399 local_got_refcounts[r_symndx] -= 1;
7400 }
7401 break;
7402
ba93b8ac
DJ		 7403 case R_ARM_TLS_LDM32:
7404 elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1;
7405 break;
7406
eb043451 7407 case R_ARM_ABS32:
bb224fc3 7408 case R_ARM_ABS32_NOI:
eb043451 7409 case R_ARM_REL32:
bb224fc3 7410 case R_ARM_REL32_NOI:
eb043451
PB		 7411 case R_ARM_PC24:
7412 case R_ARM_PLT32:
5b5bb741
PB		 7413 case R_ARM_CALL:
7414 case R_ARM_JUMP24:
eb043451 7415 case R_ARM_PREL31:
c19d1205 7416 case R_ARM_THM_CALL:
bd97cb95
DJ		 7417 case R_ARM_THM_JUMP24:
7418 case R_ARM_THM_JUMP19:
b6895b4f
PB		 7419 case R_ARM_MOVW_ABS_NC:
7420 case R_ARM_MOVT_ABS:
7421 case R_ARM_MOVW_PREL_NC:
7422 case R_ARM_MOVT_PREL:
7423 case R_ARM_THM_MOVW_ABS_NC:
7424 case R_ARM_THM_MOVT_ABS:
7425 case R_ARM_THM_MOVW_PREL_NC:
7426 case R_ARM_THM_MOVT_PREL:
b7693d02
DJ		 7427 /* Should the interworking branches be here also? */
7428
3eb128b2 7429 if (h != NULL)
eb043451
PB		 7430 {
7431 struct elf32_arm_link_hash_entry *eh;
7432 struct elf32_arm_relocs_copied **pp;
7433 struct elf32_arm_relocs_copied *p;
5e681ec4 7434
b7693d02 7435 eh = (struct elf32_arm_link_hash_entry *) h;
5e681ec4 7436
eb043451 7437 if (h->plt.refcount > 0)
b7693d02
DJ		 7438 {
7439 h->plt.refcount -= 1;
bd97cb95
DJ		 7440 if (r_type == R_ARM_THM_CALL)
7441 eh->plt_maybe_thumb_refcount--;
7442
7443 if (r_type == R_ARM_THM_JUMP24
7444 || r_type == R_ARM_THM_JUMP19)
b7693d02
DJ		 7445 eh->plt_thumb_refcount--;
7446 }
5e681ec4 7447
eb043451 7448 if (r_type == R_ARM_ABS32
bb224fc3
MS		 7449 || r_type == R_ARM_REL32
7450 || r_type == R_ARM_ABS32_NOI
7451 || r_type == R_ARM_REL32_NOI)
eb043451 7452 {
eb043451
PB		 7453 for (pp = &eh->relocs_copied; (p = *pp) != NULL;
7454 pp = &p->next)
7455 if (p->section == sec)
7456 {
7457 p->count -= 1;
bb224fc3
MS		 7458 if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32
7459 || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI)
ba93b8ac 7460 p->pc_count -= 1;
eb043451
PB		 7461 if (p->count == 0)
7462 *pp = p->next;
7463 break;
7464 }
7465 }
7466 }
7467 break;
5e681ec4 7468
eb043451
PB		 7469 default:
7470 break;
7471 }
7472 }
5e681ec4 7473
b34976b6 7474 return TRUE;
252b5132
RH		 7475}
7476
780a67af
NC		 7477/* Look through the relocs for a section during the first phase. */
7478
b34976b6 7479static bfd_boolean
57e8b36a
NC		 7480elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
7481 asection *sec, const Elf_Internal_Rela *relocs)
252b5132 7482{
b34976b6
AM		 7483 Elf_Internal_Shdr *symtab_hdr;
7484 struct elf_link_hash_entry **sym_hashes;
b34976b6
AM		 7485 const Elf_Internal_Rela *rel;
7486 const Elf_Internal_Rela *rel_end;
7487 bfd *dynobj;
5e681ec4 7488 asection *sreloc;
b34976b6 7489 bfd_vma *local_got_offsets;
5e681ec4 7490 struct elf32_arm_link_hash_table *htab;
9a5aca8c 7491
1049f94e 7492 if (info->relocatable)
b34976b6 7493 return TRUE;
9a5aca8c 7494
5e681ec4
PB		 7495 htab = elf32_arm_hash_table (info);
7496 sreloc = NULL;
9a5aca8c 7497
67687978
PB		 7498 /* Create dynamic sections for relocatable executables so that we can
7499 copy relocations. */
7500 if (htab->root.is_relocatable_executable
7501 && ! htab->root.dynamic_sections_created)
7502 {
7503 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
7504 return FALSE;
7505 }
7506
252b5132
RH		 7507 dynobj = elf_hash_table (info)->dynobj;
7508 local_got_offsets = elf_local_got_offsets (abfd);
f21f3fe0 7509
252b5132
RH		 7510 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
7511 sym_hashes = elf_sym_hashes (abfd);
9b485d32 7512
252b5132
RH		 7513 rel_end = relocs + sec->reloc_count;
7514 for (rel = relocs; rel < rel_end; rel++)
7515 {
7516 struct elf_link_hash_entry *h;
b7693d02 7517 struct elf32_arm_link_hash_entry *eh;
252b5132 7518 unsigned long r_symndx;
eb043451 7519 int r_type;
9a5aca8c 7520
252b5132 7521 r_symndx = ELF32_R_SYM (rel->r_info);
eb043451 7522 r_type = ELF32_R_TYPE (rel->r_info);
eb043451 7523 r_type = arm_real_reloc_type (htab, r_type);
ba93b8ac
DJ		 7524
7525 if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
7526 {
7527 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
7528 r_symndx);
7529 return FALSE;
7530 }
7531
252b5132
RH		 7532 if (r_symndx < symtab_hdr->sh_info)
7533 h = NULL;
7534 else
973a3492
L		 7535 {
7536 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
7537 while (h->root.type == bfd_link_hash_indirect
7538 || h->root.type == bfd_link_hash_warning)
7539 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7540 }
9a5aca8c 7541
b7693d02
DJ		 7542 eh = (struct elf32_arm_link_hash_entry *) h;
7543
eb043451 7544 switch (r_type)
252b5132 7545 {
5e681ec4 7546 case R_ARM_GOT32:
eb043451 7547 case R_ARM_GOT_PREL:
ba93b8ac
DJ		 7548 case R_ARM_TLS_GD32:
7549 case R_ARM_TLS_IE32:
5e681ec4 7550 /* This symbol requires a global offset table entry. */
ba93b8ac
DJ		 7551 {
7552 int tls_type, old_tls_type;
5e681ec4 7553
ba93b8ac
DJ		 7554 switch (r_type)
7555 {
7556 case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
7557 case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
7558 default: tls_type = GOT_NORMAL; break;
7559 }
252b5132 7560
ba93b8ac
DJ		 7561 if (h != NULL)
7562 {
7563 h->got.refcount++;
7564 old_tls_type = elf32_arm_hash_entry (h)->tls_type;
7565 }
7566 else
7567 {
7568 bfd_signed_vma *local_got_refcounts;
7569
7570 /* This is a global offset table entry for a local symbol. */
7571 local_got_refcounts = elf_local_got_refcounts (abfd);
7572 if (local_got_refcounts == NULL)
7573 {
7574 bfd_size_type size;
7575
7576 size = symtab_hdr->sh_info;
7577 size *= (sizeof (bfd_signed_vma) + sizeof(char));
7578 local_got_refcounts = bfd_zalloc (abfd, size);
7579 if (local_got_refcounts == NULL)
7580 return FALSE;
7581 elf_local_got_refcounts (abfd) = local_got_refcounts;
7582 elf32_arm_local_got_tls_type (abfd)
7583 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
7584 }
7585 local_got_refcounts[r_symndx] += 1;
7586 old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
7587 }
7588
7589 /* We will already have issued an error message if there is a
7590 TLS / non-TLS mismatch, based on the symbol type. We don't
7591 support any linker relaxations. So just combine any TLS
7592 types needed. */
7593 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
7594 && tls_type != GOT_NORMAL)
7595 tls_type |= old_tls_type;
7596
7597 if (old_tls_type != tls_type)
7598 {
7599 if (h != NULL)
7600 elf32_arm_hash_entry (h)->tls_type = tls_type;
7601 else
7602 elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
7603 }
7604 }
7605 /* Fall through */
7606
7607 case R_ARM_TLS_LDM32:
7608 if (r_type == R_ARM_TLS_LDM32)
7609 htab->tls_ldm_got.refcount++;
7610 /* Fall through */
252b5132 7611
c19d1205 7612 case R_ARM_GOTOFF32:
5e681ec4
PB		 7613 case R_ARM_GOTPC:
7614 if (htab->sgot == NULL)
7615 {
7616 if (htab->root.dynobj == NULL)
7617 htab->root.dynobj = abfd;
7618 if (!create_got_section (htab->root.dynobj, info))
7619 return FALSE;
7620 }
252b5132
RH		 7621 break;
7622
00a97672
RS		 7623 case R_ARM_ABS12:
7624 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
7625 ldr __GOTT_INDEX__ offsets. */
7626 if (!htab->vxworks_p)
7627 break;
7628 /* Fall through */
7629
252b5132 7630 case R_ARM_ABS32:
bb224fc3 7631 case R_ARM_ABS32_NOI:
252b5132 7632 case R_ARM_REL32:
bb224fc3 7633 case R_ARM_REL32_NOI:
252b5132 7634 case R_ARM_PC24:
7359ea65 7635 case R_ARM_PLT32:
5b5bb741
PB		 7636 case R_ARM_CALL:
7637 case R_ARM_JUMP24:
eb043451 7638 case R_ARM_PREL31:
c19d1205 7639 case R_ARM_THM_CALL:
bd97cb95
DJ		 7640 case R_ARM_THM_JUMP24:
7641 case R_ARM_THM_JUMP19:
b6895b4f
PB		 7642 case R_ARM_MOVW_ABS_NC:
7643 case R_ARM_MOVT_ABS:
7644 case R_ARM_MOVW_PREL_NC:
7645 case R_ARM_MOVT_PREL:
7646 case R_ARM_THM_MOVW_ABS_NC:
7647 case R_ARM_THM_MOVT_ABS:
7648 case R_ARM_THM_MOVW_PREL_NC:
7649 case R_ARM_THM_MOVT_PREL:
b7693d02 7650 /* Should the interworking branches be listed here? */
7359ea65 7651 if (h != NULL)
5e681ec4
PB		 7652 {
7653 /* If this reloc is in a read-only section, we might
7654 need a copy reloc. We can't check reliably at this
7655 stage whether the section is read-only, as input
7656 sections have not yet been mapped to output sections.
7657 Tentatively set the flag for now, and correct in
7658 adjust_dynamic_symbol. */
7359ea65 7659 if (!info->shared)
f5385ebf 7660 h->non_got_ref = 1;
7359ea65 7661
5e681ec4 7662 /* We may need a .plt entry if the function this reloc
c84cd8ee
DJ		 7663 refers to is in a different object. We can't tell for
7664 sure yet, because something later might force the
7665 symbol local. */
bb224fc3
MS		 7666 if (r_type != R_ARM_ABS32
7667 && r_type != R_ARM_REL32
7668 && r_type != R_ARM_ABS32_NOI
d3753b85
RS		 7669 && r_type != R_ARM_REL32_NOI
7670 && r_type != R_ARM_ABS12)
f5385ebf 7671 h->needs_plt = 1;
4f199be3
DJ		 7672
7673 /* If we create a PLT entry, this relocation will reference
7674 it, even if it's an ABS32 relocation. */
7675 h->plt.refcount += 1;
b7693d02 7676
bd97cb95
DJ		 7677 /* It's too early to use htab->use_blx here, so we have to
7678 record possible blx references separately from
7679 relocs that definitely need a thumb stub. */
7680
c19d1205 7681 if (r_type == R_ARM_THM_CALL)
bd97cb95
DJ		 7682 eh->plt_maybe_thumb_refcount += 1;
7683
7684 if (r_type == R_ARM_THM_JUMP24
7685 || r_type == R_ARM_THM_JUMP19)
b7693d02 7686 eh->plt_thumb_refcount += 1;
5e681ec4
PB		 7687 }
7688
67687978
PB		 7689 /* If we are creating a shared library or relocatable executable,
7690 and this is a reloc against a global symbol, or a non PC
7691 relative reloc against a local symbol, then we need to copy
7692 the reloc into the shared library. However, if we are linking
7693 with -Bsymbolic, we do not need to copy a reloc against a
252b5132
RH		 7694 global symbol which is defined in an object we are
7695 including in the link (i.e., DEF_REGULAR is set). At
7696 this point we have not seen all the input files, so it is
7697 possible that DEF_REGULAR is not set now but will be set
7698 later (it is never cleared). We account for that
7699 possibility below by storing information in the
5e681ec4 7700 relocs_copied field of the hash table entry. */
67687978 7701 if ((info->shared || htab->root.is_relocatable_executable)
5e681ec4 7702 && (sec->flags & SEC_ALLOC) != 0
bb224fc3 7703 && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI)
71a976dd
DJ		 7704 || (h != NULL && ! h->needs_plt
7705 && (! info->symbolic || ! h->def_regular))))
252b5132 7706 {
5e681ec4
PB		 7707 struct elf32_arm_relocs_copied *p, **head;
7708
252b5132
RH		 7709 /* When creating a shared object, we must copy these
7710 reloc types into the output file. We create a reloc
7711 section in dynobj and make room for this reloc. */
7712 if (sreloc == NULL)
7713 {
7714 const char * name;
7715
7716 name = (bfd_elf_string_from_elf_section
7717 (abfd,
7718 elf_elfheader (abfd)->e_shstrndx,
7719 elf_section_data (sec)->rel_hdr.sh_name));
7720 if (name == NULL)
b34976b6 7721 return FALSE;
252b5132 7722
00a97672 7723 BFD_ASSERT (reloc_section_p (htab, name, sec));
252b5132
RH		 7724
7725 sreloc = bfd_get_section_by_name (dynobj, name);
7726 if (sreloc == NULL)
7727 {
7728 flagword flags;
7729
252b5132
RH		 7730 flags = (SEC_HAS_CONTENTS | SEC_READONLY
7731 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
e5a52504
MM		 7732 if ((sec->flags & SEC_ALLOC) != 0
7733 /* BPABI objects never have dynamic
7734 relocations mapped. */
7735 && !htab->symbian_p)
252b5132 7736 flags |= SEC_ALLOC | SEC_LOAD;
3496cb2a
L		 7737 sreloc = bfd_make_section_with_flags (dynobj,
7738 name,
7739 flags);
252b5132 7740 if (sreloc == NULL
252b5132 7741 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
b34976b6 7742 return FALSE;
252b5132 7743 }
5e681ec4
PB		 7744
7745 elf_section_data (sec)->sreloc = sreloc;
252b5132
RH		 7746 }
7747
5e681ec4
PB		 7748 /* If this is a global symbol, we count the number of
7749 relocations we need for this symbol. */
7750 if (h != NULL)
252b5132 7751 {
5e681ec4
PB		 7752 head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied;
7753 }
7754 else
7755 {
7756 /* Track dynamic relocs needed for local syms too.
7757 We really need local syms available to do this
7758 easily. Oh well. */
57e8b36a 7759
5e681ec4 7760 asection *s;
6edfbbad
DJ		 7761 void *vpp;
7762
5e681ec4
PB		 7763 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
7764 sec, r_symndx);
7765 if (s == NULL)
7766 return FALSE;
57e8b36a 7767
6edfbbad
DJ		 7768 vpp = &elf_section_data (s)->local_dynrel;
7769 head = (struct elf32_arm_relocs_copied **) vpp;
5e681ec4 7770 }
57e8b36a 7771
5e681ec4
PB		 7772 p = *head;
7773 if (p == NULL || p->section != sec)
7774 {
7775 bfd_size_type amt = sizeof *p;
57e8b36a 7776
5e681ec4 7777 p = bfd_alloc (htab->root.dynobj, amt);
252b5132 7778 if (p == NULL)
5e681ec4
PB		 7779 return FALSE;
7780 p->next = *head;
7781 *head = p;
7782 p->section = sec;
7783 p->count = 0;
ba93b8ac 7784 p->pc_count = 0;
252b5132 7785 }
57e8b36a 7786
bb224fc3 7787 if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI)
ba93b8ac 7788 p->pc_count += 1;
71a976dd 7789 p->count += 1;
252b5132
RH		 7790 }
7791 break;
7792
7793 /* This relocation describes the C++ object vtable hierarchy.
7794 Reconstruct it for later use during GC. */
7795 case R_ARM_GNU_VTINHERIT:
c152c796 7796 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 7797 return FALSE;
252b5132 7798 break;
9a5aca8c 7799
252b5132
RH		 7800 /* This relocation describes which C++ vtable entries are actually
7801 used. Record for later use during GC. */
7802 case R_ARM_GNU_VTENTRY:
d17e0c6e
JB		 7803 BFD_ASSERT (h != NULL);
7804 if (h != NULL
7805 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
b34976b6 7806 return FALSE;
252b5132
RH		 7807 break;
7808 }
7809 }
f21f3fe0 7810
b34976b6 7811 return TRUE;
252b5132
RH		 7812}
7813
6a5bb875
PB		 7814/* Unwinding tables are not referenced directly. This pass marks them as
7815 required if the corresponding code section is marked. */
7816
7817static bfd_boolean
7818elf32_arm_gc_mark_extra_sections(struct bfd_link_info *info,
7819 elf_gc_mark_hook_fn gc_mark_hook)
7820{
7821 bfd *sub;
7822 Elf_Internal_Shdr **elf_shdrp;
7823 bfd_boolean again;
7824
7825 /* Marking EH data may cause additional code sections to be marked,
7826 requiring multiple passes. */
7827 again = TRUE;
7828 while (again)
7829 {
7830 again = FALSE;
7831 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
7832 {
7833 asection *o;
7834
7835 if (bfd_get_flavour (sub) != bfd_target_elf_flavour)
7836 continue;
7837
7838 elf_shdrp = elf_elfsections (sub);
7839 for (o = sub->sections; o != NULL; o = o->next)
7840 {
7841 Elf_Internal_Shdr *hdr;
7842 hdr = &elf_section_data (o)->this_hdr;
7843 if (hdr->sh_type == SHT_ARM_EXIDX && hdr->sh_link
7844 && !o->gc_mark
7845 && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
7846 {
7847 again = TRUE;
7848 if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
7849 return FALSE;
7850 }
7851 }
7852 }
7853 }
7854
7855 return TRUE;
7856}
7857
3c9458e9
NC		 7858/* Treat mapping symbols as special target symbols. */
7859
7860static bfd_boolean
7861elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
7862{
b0796911
PB		 7863 return bfd_is_arm_special_symbol_name (sym->name,
7864 BFD_ARM_SPECIAL_SYM_TYPE_ANY);
3c9458e9
NC		 7865}
7866
0367ecfb
NC		 7867/* This is a copy of elf_find_function() from elf.c except that
7868 ARM mapping symbols are ignored when looking for function names
7869 and STT_ARM_TFUNC is considered to a function type. */
252b5132 7870
0367ecfb
NC		 7871static bfd_boolean
7872arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
7873 asection * section,
7874 asymbol ** symbols,
7875 bfd_vma offset,
7876 const char ** filename_ptr,
7877 const char ** functionname_ptr)
7878{
7879 const char * filename = NULL;
7880 asymbol * func = NULL;
7881 bfd_vma low_func = 0;
7882 asymbol ** p;
252b5132
RH		 7883
7884 for (p = symbols; *p != NULL; p++)
7885 {
7886 elf_symbol_type *q;
7887
7888 q = (elf_symbol_type *) *p;
7889
252b5132
RH		 7890 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
7891 {
7892 default:
7893 break;
7894 case STT_FILE:
7895 filename = bfd_asymbol_name (&q->symbol);
7896 break;
252b5132
RH		 7897 case STT_FUNC:
7898 case STT_ARM_TFUNC:
9d2da7ca 7899 case STT_NOTYPE:
b0796911 7900 /* Skip mapping symbols. */
0367ecfb 7901 if ((q->symbol.flags & BSF_LOCAL)
b0796911
PB		 7902 && bfd_is_arm_special_symbol_name (q->symbol.name,
7903 BFD_ARM_SPECIAL_SYM_TYPE_ANY))
0367ecfb
NC		 7904 continue;
7905 /* Fall through. */
6b40fcba 7906 if (bfd_get_section (&q->symbol) == section
252b5132
RH		 7907 && q->symbol.value >= low_func
7908 && q->symbol.value <= offset)
7909 {
7910 func = (asymbol *) q;
7911 low_func = q->symbol.value;
7912 }
7913 break;
7914 }
7915 }
7916
7917 if (func == NULL)
b34976b6 7918 return FALSE;
252b5132 7919
0367ecfb
NC		 7920 if (filename_ptr)
7921 *filename_ptr = filename;
7922 if (functionname_ptr)
7923 *functionname_ptr = bfd_asymbol_name (func);
7924
7925 return TRUE;
7926}
7927
7928
7929/* Find the nearest line to a particular section and offset, for error
7930 reporting. This code is a duplicate of the code in elf.c, except
7931 that it uses arm_elf_find_function. */
7932
7933static bfd_boolean
7934elf32_arm_find_nearest_line (bfd * abfd,
7935 asection * section,
7936 asymbol ** symbols,
7937 bfd_vma offset,
7938 const char ** filename_ptr,
7939 const char ** functionname_ptr,
7940 unsigned int * line_ptr)
7941{
7942 bfd_boolean found = FALSE;
7943
7944 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
7945
7946 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
7947 filename_ptr, functionname_ptr,
7948 line_ptr, 0,
7949 & elf_tdata (abfd)->dwarf2_find_line_info))
7950 {
7951 if (!*functionname_ptr)
7952 arm_elf_find_function (abfd, section, symbols, offset,
7953 *filename_ptr ? NULL : filename_ptr,
7954 functionname_ptr);
f21f3fe0 7955
0367ecfb
NC		 7956 return TRUE;
7957 }
7958
7959 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
7960 & found, filename_ptr,
7961 functionname_ptr, line_ptr,
7962 & elf_tdata (abfd)->line_info))
7963 return FALSE;
7964
7965 if (found && (*functionname_ptr || *line_ptr))
7966 return TRUE;
7967
7968 if (symbols == NULL)
7969 return FALSE;
7970
7971 if (! arm_elf_find_function (abfd, section, symbols, offset,
7972 filename_ptr, functionname_ptr))
7973 return FALSE;
7974
7975 *line_ptr = 0;
b34976b6 7976 return TRUE;
252b5132
RH		 7977}
7978
4ab527b0
FF		 7979static bfd_boolean
7980elf32_arm_find_inliner_info (bfd * abfd,
7981 const char ** filename_ptr,
7982 const char ** functionname_ptr,
7983 unsigned int * line_ptr)
7984{
7985 bfd_boolean found;
7986 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
7987 functionname_ptr, line_ptr,
7988 & elf_tdata (abfd)->dwarf2_find_line_info);
7989 return found;
7990}
7991
252b5132
RH		 7992/* Adjust a symbol defined by a dynamic object and referenced by a
7993 regular object. The current definition is in some section of the
7994 dynamic object, but we're not including those sections. We have to
7995 change the definition to something the rest of the link can
7996 understand. */
7997
b34976b6 7998static bfd_boolean
57e8b36a
NC		 7999elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
8000 struct elf_link_hash_entry * h)
252b5132
RH		 8001{
8002 bfd * dynobj;
8003 asection * s;
b7693d02 8004 struct elf32_arm_link_hash_entry * eh;
67687978 8005 struct elf32_arm_link_hash_table *globals;
252b5132 8006
67687978 8007 globals = elf32_arm_hash_table (info);
252b5132
RH		 8008 dynobj = elf_hash_table (info)->dynobj;
8009
8010 /* Make sure we know what is going on here. */
8011 BFD_ASSERT (dynobj != NULL
f5385ebf 8012 && (h->needs_plt
f6e332e6 8013 || h->u.weakdef != NULL
f5385ebf
AM		 8014 || (h->def_dynamic
8015 && h->ref_regular
8016 && !h->def_regular)));
252b5132 8017
b7693d02
DJ		 8018 eh = (struct elf32_arm_link_hash_entry *) h;
8019
252b5132
RH		 8020 /* If this is a function, put it in the procedure linkage table. We
8021 will fill in the contents of the procedure linkage table later,
8022 when we know the address of the .got section. */
b7693d02 8023 if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
f5385ebf 8024 || h->needs_plt)
252b5132 8025 {
5e681ec4
PB		 8026 if (h->plt.refcount <= 0
8027 || SYMBOL_CALLS_LOCAL (info, h)
8028 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
8029 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 8030 {
8031 /* This case can occur if we saw a PLT32 reloc in an input
5e681ec4
PB		 8032 file, but the symbol was never referred to by a dynamic
8033 object, or if all references were garbage collected. In
8034 such a case, we don't actually need to build a procedure
8035 linkage table, and we can just do a PC24 reloc instead. */
8036 h->plt.offset = (bfd_vma) -1;
b7693d02 8037 eh->plt_thumb_refcount = 0;
bd97cb95 8038 eh->plt_maybe_thumb_refcount = 0;
f5385ebf 8039 h->needs_plt = 0;
252b5132
RH		 8040 }
8041
b34976b6 8042 return TRUE;
252b5132 8043 }
5e681ec4 8044 else
b7693d02
DJ		 8045 {
8046 /* It's possible that we incorrectly decided a .plt reloc was
8047 needed for an R_ARM_PC24 or similar reloc to a non-function sym
8048 in check_relocs. We can't decide accurately between function
8049 and non-function syms in check-relocs; Objects loaded later in
8050 the link may change h->type. So fix it now. */
8051 h->plt.offset = (bfd_vma) -1;
8052 eh->plt_thumb_refcount = 0;
bd97cb95 8053 eh->plt_maybe_thumb_refcount = 0;
b7693d02 8054 }
252b5132
RH		 8055
8056 /* If this is a weak symbol, and there is a real definition, the
8057 processor independent code will have arranged for us to see the
8058 real definition first, and we can just use the same value. */
f6e332e6 8059 if (h->u.weakdef != NULL)
252b5132 8060 {
f6e332e6
AM		 8061 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
8062 || h->u.weakdef->root.type == bfd_link_hash_defweak);
8063 h->root.u.def.section = h->u.weakdef->root.u.def.section;
8064 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 8065 return TRUE;
252b5132
RH		 8066 }
8067
ba93b8ac
DJ		 8068 /* If there are no non-GOT references, we do not need a copy
8069 relocation. */
8070 if (!h->non_got_ref)
8071 return TRUE;
8072
252b5132
RH		 8073 /* This is a reference to a symbol defined by a dynamic object which
8074 is not a function. */
8075
8076 /* If we are creating a shared library, we must presume that the
8077 only references to the symbol are via the global offset table.
8078 For such cases we need not do anything here; the relocations will
67687978
PB		 8079 be handled correctly by relocate_section. Relocatable executables
8080 can reference data in shared objects directly, so we don't need to
8081 do anything here. */
8082 if (info->shared || globals->root.is_relocatable_executable)
b34976b6 8083 return TRUE;
252b5132 8084
909272ee
AM		 8085 if (h->size == 0)
8086 {
8087 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
8088 h->root.root.string);
8089 return TRUE;
8090 }
8091
252b5132
RH		 8092 /* We must allocate the symbol in our .dynbss section, which will
8093 become part of the .bss section of the executable. There will be
8094 an entry for this symbol in the .dynsym section. The dynamic
8095 object will contain position independent code, so all references
8096 from the dynamic object to this symbol will go through the global
8097 offset table. The dynamic linker will use the .dynsym entry to
8098 determine the address it must put in the global offset table, so
8099 both the dynamic object and the regular object will refer to the
8100 same memory location for the variable. */
252b5132
RH		 8101 s = bfd_get_section_by_name (dynobj, ".dynbss");
8102 BFD_ASSERT (s != NULL);
8103
8104 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
8105 copy the initial value out of the dynamic object and into the
8106 runtime process image. We need to remember the offset into the
00a97672 8107 .rel(a).bss section we are going to use. */
252b5132
RH		 8108 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
8109 {
8110 asection *srel;
8111
00a97672 8112 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss"));
252b5132 8113 BFD_ASSERT (srel != NULL);
00a97672 8114 srel->size += RELOC_SIZE (globals);
f5385ebf 8115 h->needs_copy = 1;
252b5132
RH		 8116 }
8117
027297b7 8118 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH		 8119}
8120
5e681ec4
PB		 8121/* Allocate space in .plt, .got and associated reloc sections for
8122 dynamic relocs. */
8123
8124static bfd_boolean
57e8b36a 8125allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
5e681ec4
PB		 8126{
8127 struct bfd_link_info *info;
8128 struct elf32_arm_link_hash_table *htab;
8129 struct elf32_arm_link_hash_entry *eh;
8130 struct elf32_arm_relocs_copied *p;
bd97cb95 8131 bfd_signed_vma thumb_refs;
5e681ec4 8132
b7693d02
DJ		 8133 eh = (struct elf32_arm_link_hash_entry *) h;
8134
5e681ec4
PB		 8135 if (h->root.type == bfd_link_hash_indirect)
8136 return TRUE;
8137
8138 if (h->root.type == bfd_link_hash_warning)
8139 /* When warning symbols are created, they **replace** the "real"
8140 entry in the hash table, thus we never get to see the real
8141 symbol in a hash traversal. So look at it now. */
8142 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8143
8144 info = (struct bfd_link_info *) inf;
8145 htab = elf32_arm_hash_table (info);
8146
8147 if (htab->root.dynamic_sections_created
8148 && h->plt.refcount > 0)
8149 {
8150 /* Make sure this symbol is output as a dynamic symbol.
8151 Undefined weak syms won't yet be marked as dynamic. */
8152 if (h->dynindx == -1
f5385ebf 8153 && !h->forced_local)
5e681ec4 8154 {
c152c796 8155 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB		 8156 return FALSE;
8157 }
8158
8159 if (info->shared
7359ea65 8160 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
5e681ec4
PB		 8161 {
8162 asection *s = htab->splt;
8163
8164 /* If this is the first .plt entry, make room for the special
8165 first entry. */
eea6121a 8166 if (s->size == 0)
e5a52504 8167 s->size += htab->plt_header_size;
5e681ec4 8168
eea6121a 8169 h->plt.offset = s->size;
5e681ec4 8170
b7693d02
DJ		 8171 /* If we will insert a Thumb trampoline before this PLT, leave room
8172 for it. */
bd97cb95
DJ		 8173 thumb_refs = eh->plt_thumb_refcount;
8174 if (!htab->use_blx)
8175 thumb_refs += eh->plt_maybe_thumb_refcount;
8176
8177 if (thumb_refs > 0)
b7693d02
DJ		 8178 {
8179 h->plt.offset += PLT_THUMB_STUB_SIZE;
8180 s->size += PLT_THUMB_STUB_SIZE;
8181 }
8182
5e681ec4
PB		 8183 /* If this symbol is not defined in a regular file, and we are
8184 not generating a shared library, then set the symbol to this
8185 location in the .plt. This is required to make function
8186 pointers compare as equal between the normal executable and
8187 the shared library. */
8188 if (! info->shared
f5385ebf 8189 && !h->def_regular)
5e681ec4
PB		 8190 {
8191 h->root.u.def.section = s;
8192 h->root.u.def.value = h->plt.offset;
b7693d02
DJ		 8193
8194 /* Make sure the function is not marked as Thumb, in case
8195 it is the target of an ABS32 relocation, which will
8196 point to the PLT entry. */
8197 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
8198 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
5e681ec4
PB		 8199 }
8200
8201 /* Make room for this entry. */
e5a52504 8202 s->size += htab->plt_entry_size;
5e681ec4 8203
e5a52504 8204 if (!htab->symbian_p)
b7693d02
DJ		 8205 {
8206 /* We also need to make an entry in the .got.plt section, which
8207 will be placed in the .got section by the linker script. */
8208 eh->plt_got_offset = htab->sgotplt->size;
8209 htab->sgotplt->size += 4;
8210 }
5e681ec4 8211
00a97672
RS		 8212 /* We also need to make an entry in the .rel(a).plt section. */
8213 htab->srelplt->size += RELOC_SIZE (htab);
8214
8215 /* VxWorks executables have a second set of relocations for
8216 each PLT entry. They go in a separate relocation section,
8217 which is processed by the kernel loader. */
8218 if (htab->vxworks_p && !info->shared)
8219 {
8220 /* There is a relocation for the initial PLT entry:
8221 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
8222 if (h->plt.offset == htab->plt_header_size)
8223 htab->srelplt2->size += RELOC_SIZE (htab);
8224
8225 /* There are two extra relocations for each subsequent
8226 PLT entry: an R_ARM_32 relocation for the GOT entry,
8227 and an R_ARM_32 relocation for the PLT entry. */
8228 htab->srelplt2->size += RELOC_SIZE (htab) * 2;
8229 }
5e681ec4
PB		 8230 }
8231 else
8232 {
8233 h->plt.offset = (bfd_vma) -1;
f5385ebf 8234 h->needs_plt = 0;
5e681ec4
PB		 8235 }
8236 }
8237 else
8238 {
8239 h->plt.offset = (bfd_vma) -1;
f5385ebf 8240 h->needs_plt = 0;
5e681ec4
PB		 8241 }
8242
8243 if (h->got.refcount > 0)
8244 {
8245 asection *s;
8246 bfd_boolean dyn;
ba93b8ac
DJ		 8247 int tls_type = elf32_arm_hash_entry (h)->tls_type;
8248 int indx;
5e681ec4
PB		 8249
8250 /* Make sure this symbol is output as a dynamic symbol.
8251 Undefined weak syms won't yet be marked as dynamic. */
8252 if (h->dynindx == -1
f5385ebf 8253 && !h->forced_local)
5e681ec4 8254 {
c152c796 8255 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB		 8256 return FALSE;
8257 }
8258
e5a52504
MM		 8259 if (!htab->symbian_p)
8260 {
8261 s = htab->sgot;
8262 h->got.offset = s->size;
ba93b8ac
DJ		 8263
8264 if (tls_type == GOT_UNKNOWN)
8265 abort ();
8266
8267 if (tls_type == GOT_NORMAL)
8268 /* Non-TLS symbols need one GOT slot. */
8269 s->size += 4;
8270 else
8271 {
8272 if (tls_type & GOT_TLS_GD)
8273 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
8274 s->size += 8;
8275 if (tls_type & GOT_TLS_IE)
8276 /* R_ARM_TLS_IE32 needs one GOT slot. */
8277 s->size += 4;
8278 }
8279
e5a52504 8280 dyn = htab->root.dynamic_sections_created;
ba93b8ac
DJ		 8281
8282 indx = 0;
8283 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
8284 && (!info->shared
8285 || !SYMBOL_REFERENCES_LOCAL (info, h)))
8286 indx = h->dynindx;
8287
8288 if (tls_type != GOT_NORMAL
8289 && (info->shared || indx != 0)
8290 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8291 || h->root.type != bfd_link_hash_undefweak))
8292 {
8293 if (tls_type & GOT_TLS_IE)
00a97672 8294 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ		 8295
8296 if (tls_type & GOT_TLS_GD)
00a97672 8297 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ		 8298
8299 if ((tls_type & GOT_TLS_GD) && indx != 0)
00a97672 8300 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ		 8301 }
8302 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
8303 || h->root.type != bfd_link_hash_undefweak)
8304 && (info->shared
8305 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
00a97672 8306 htab->srelgot->size += RELOC_SIZE (htab);
e5a52504 8307 }
5e681ec4
PB		 8308 }
8309 else
8310 h->got.offset = (bfd_vma) -1;
8311
a4fd1a8e
PB		 8312 /* Allocate stubs for exported Thumb functions on v4t. */
8313 if (!htab->use_blx && h->dynindx != -1
0eaedd0e 8314 && h->def_regular
a4fd1a8e
PB		 8315 && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
8316 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
8317 {
8318 struct elf_link_hash_entry * th;
8319 struct bfd_link_hash_entry * bh;
8320 struct elf_link_hash_entry * myh;
8321 char name[1024];
8322 asection *s;
8323 bh = NULL;
8324 /* Create a new symbol to regist the real location of the function. */
8325 s = h->root.u.def.section;
8326 sprintf(name, "__real_%s", h->root.root.string);
8327 _bfd_generic_link_add_one_symbol (info, s->owner,
8328 name, BSF_GLOBAL, s,
8329 h->root.u.def.value,
8330 NULL, TRUE, FALSE, &bh);
8331
8332 myh = (struct elf_link_hash_entry *) bh;
8333 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
8334 myh->forced_local = 1;
8335 eh->export_glue = myh;
8336 th = record_arm_to_thumb_glue (info, h);
8337 /* Point the symbol at the stub. */
8338 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
8339 h->root.u.def.section = th->root.u.def.section;
8340 h->root.u.def.value = th->root.u.def.value & ~1;
8341 }
8342
5e681ec4
PB		 8343 if (eh->relocs_copied == NULL)
8344 return TRUE;
8345
8346 /* In the shared -Bsymbolic case, discard space allocated for
8347 dynamic pc-relative relocs against symbols which turn out to be
8348 defined in regular objects. For the normal shared case, discard
8349 space for pc-relative relocs that have become local due to symbol
8350 visibility changes. */
8351
67687978 8352 if (info->shared || htab->root.is_relocatable_executable)
5e681ec4 8353 {
7bdca076 8354 /* The only relocs that use pc_count are R_ARM_REL32 and
bb224fc3
MS		 8355 R_ARM_REL32_NOI, which will appear on something like
8356 ".long foo - .". We want calls to protected symbols to resolve
8357 directly to the function rather than going via the plt. If people
8358 want function pointer comparisons to work as expected then they
8359 should avoid writing assembly like ".long foo - .". */
ba93b8ac
DJ		 8360 if (SYMBOL_CALLS_LOCAL (info, h))
8361 {
8362 struct elf32_arm_relocs_copied **pp;
8363
8364 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
8365 {
8366 p->count -= p->pc_count;
8367 p->pc_count = 0;
8368 if (p->count == 0)
8369 *pp = p->next;
8370 else
8371 pp = &p->next;
8372 }
8373 }
8374
8375 /* Also discard relocs on undefined weak syms with non-default
7359ea65 8376 visibility. */
22d606e9 8377 if (eh->relocs_copied != NULL
5e681ec4 8378 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 8379 {
8380 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
8381 eh->relocs_copied = NULL;
8382
8383 /* Make sure undefined weak symbols are output as a dynamic
8384 symbol in PIEs. */
8385 else if (h->dynindx == -1
8386 && !h->forced_local)
8387 {
8388 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8389 return FALSE;
8390 }
8391 }
8392
67687978
PB		 8393 else if (htab->root.is_relocatable_executable && h->dynindx == -1
8394 && h->root.type == bfd_link_hash_new)
8395 {
8396 /* Output absolute symbols so that we can create relocations
8397 against them. For normal symbols we output a relocation
8398 against the section that contains them. */
8399 if (! bfd_elf_link_record_dynamic_symbol (info, h))
8400 return FALSE;
8401 }
8402
5e681ec4
PB		 8403 }
8404 else
8405 {
8406 /* For the non-shared case, discard space for relocs against
8407 symbols which turn out to need copy relocs or are not
8408 dynamic. */
8409
f5385ebf
AM		 8410 if (!h->non_got_ref
8411 && ((h->def_dynamic
8412 && !h->def_regular)
5e681ec4
PB		 8413 || (htab->root.dynamic_sections_created
8414 && (h->root.type == bfd_link_hash_undefweak
8415 || h->root.type == bfd_link_hash_undefined))))
8416 {
8417 /* Make sure this symbol is output as a dynamic symbol.
8418 Undefined weak syms won't yet be marked as dynamic. */
8419 if (h->dynindx == -1
f5385ebf 8420 && !h->forced_local)
5e681ec4 8421 {
c152c796 8422 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB		 8423 return FALSE;
8424 }
8425
8426 /* If that succeeded, we know we'll be keeping all the
8427 relocs. */
8428 if (h->dynindx != -1)
8429 goto keep;
8430 }
8431
8432 eh->relocs_copied = NULL;
8433
8434 keep: ;
8435 }
8436
8437 /* Finally, allocate space. */
8438 for (p = eh->relocs_copied; p != NULL; p = p->next)
8439 {
8440 asection *sreloc = elf_section_data (p->section)->sreloc;
00a97672 8441 sreloc->size += p->count * RELOC_SIZE (htab);
5e681ec4
PB		 8442 }
8443
8444 return TRUE;
8445}
8446
08d1f311
DJ		 8447/* Find any dynamic relocs that apply to read-only sections. */
8448
8449static bfd_boolean
8450elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry *h, PTR inf)
8451{
8452 struct elf32_arm_link_hash_entry *eh;
8453 struct elf32_arm_relocs_copied *p;
8454
8455 if (h->root.type == bfd_link_hash_warning)
8456 h = (struct elf_link_hash_entry *) h->root.u.i.link;
8457
8458 eh = (struct elf32_arm_link_hash_entry *) h;
8459 for (p = eh->relocs_copied; p != NULL; p = p->next)
8460 {
8461 asection *s = p->section;
8462
8463 if (s != NULL && (s->flags & SEC_READONLY) != 0)
8464 {
8465 struct bfd_link_info *info = (struct bfd_link_info *) inf;
8466
8467 info->flags |= DF_TEXTREL;
8468
8469 /* Not an error, just cut short the traversal. */
8470 return FALSE;
8471 }
8472 }
8473 return TRUE;
8474}
8475
d504ffc8
DJ		 8476void
8477bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info,
8478 int byteswap_code)
8479{
8480 struct elf32_arm_link_hash_table *globals;
8481
8482 globals = elf32_arm_hash_table (info);
8483 globals->byteswap_code = byteswap_code;
8484}
8485
252b5132
RH		 8486/* Set the sizes of the dynamic sections. */
8487
b34976b6 8488static bfd_boolean
57e8b36a
NC		 8489elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
8490 struct bfd_link_info * info)
252b5132
RH		 8491{
8492 bfd * dynobj;
8493 asection * s;
b34976b6
AM		 8494 bfd_boolean plt;
8495 bfd_boolean relocs;
5e681ec4
PB		 8496 bfd *ibfd;
8497 struct elf32_arm_link_hash_table *htab;
252b5132 8498
5e681ec4 8499 htab = elf32_arm_hash_table (info);
252b5132
RH		 8500 dynobj = elf_hash_table (info)->dynobj;
8501 BFD_ASSERT (dynobj != NULL);
39b41c9c 8502 check_use_blx (htab);
252b5132
RH		 8503
8504 if (elf_hash_table (info)->dynamic_sections_created)
8505 {
8506 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 8507 if (info->executable)
252b5132
RH		 8508 {
8509 s = bfd_get_section_by_name (dynobj, ".interp");
8510 BFD_ASSERT (s != NULL);
eea6121a 8511 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 8512 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
8513 }
8514 }
5e681ec4
PB		 8515
8516 /* Set up .got offsets for local syms, and space for local dynamic
8517 relocs. */
8518 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
252b5132 8519 {
5e681ec4
PB		 8520 bfd_signed_vma *local_got;
8521 bfd_signed_vma *end_local_got;
8522 char *local_tls_type;
8523 bfd_size_type locsymcount;
8524 Elf_Internal_Shdr *symtab_hdr;
8525 asection *srel;
8526
8527 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
8528 continue;
8529
8530 for (s = ibfd->sections; s != NULL; s = s->next)
8531 {
8532 struct elf32_arm_relocs_copied *p;
8533
6edfbbad 8534 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
5e681ec4
PB		 8535 {
8536 if (!bfd_is_abs_section (p->section)
8537 && bfd_is_abs_section (p->section->output_section))
8538 {
8539 /* Input section has been discarded, either because
8540 it is a copy of a linkonce section or due to
8541 linker script /DISCARD/, so we'll be discarding
8542 the relocs too. */
8543 }
8544 else if (p->count != 0)
8545 {
8546 srel = elf_section_data (p->section)->sreloc;
00a97672 8547 srel->size += p->count * RELOC_SIZE (htab);
5e681ec4
PB		 8548 if ((p->section->output_section->flags & SEC_READONLY) != 0)
8549 info->flags |= DF_TEXTREL;
8550 }
8551 }
8552 }
8553
8554 local_got = elf_local_got_refcounts (ibfd);
8555 if (!local_got)
8556 continue;
8557
8558 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
8559 locsymcount = symtab_hdr->sh_info;
8560 end_local_got = local_got + locsymcount;
ba93b8ac 8561 local_tls_type = elf32_arm_local_got_tls_type (ibfd);
5e681ec4
PB		 8562 s = htab->sgot;
8563 srel = htab->srelgot;
8564 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
8565 {
8566 if (*local_got > 0)
8567 {
eea6121a 8568 *local_got = s->size;
ba93b8ac
DJ		 8569 if (*local_tls_type & GOT_TLS_GD)
8570 /* TLS_GD relocs need an 8-byte structure in the GOT. */
8571 s->size += 8;
8572 if (*local_tls_type & GOT_TLS_IE)
8573 s->size += 4;
8574 if (*local_tls_type == GOT_NORMAL)
8575 s->size += 4;
8576
8577 if (info->shared || *local_tls_type == GOT_TLS_GD)
00a97672 8578 srel->size += RELOC_SIZE (htab);
5e681ec4
PB		 8579 }
8580 else
8581 *local_got = (bfd_vma) -1;
8582 }
252b5132
RH		 8583 }
8584
ba93b8ac
DJ		 8585 if (htab->tls_ldm_got.refcount > 0)
8586 {
8587 /* Allocate two GOT entries and one dynamic relocation (if necessary)
8588 for R_ARM_TLS_LDM32 relocations. */
8589 htab->tls_ldm_got.offset = htab->sgot->size;
8590 htab->sgot->size += 8;
8591 if (info->shared)
00a97672 8592 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ		 8593 }
8594 else
8595 htab->tls_ldm_got.offset = -1;
8596
5e681ec4
PB		 8597 /* Allocate global sym .plt and .got entries, and space for global
8598 sym dynamic relocs. */
57e8b36a 8599 elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info);
252b5132 8600
d504ffc8
DJ		 8601 /* Here we rummage through the found bfds to collect glue information. */
8602 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
c7b8f16e
JB		 8603 {
8604 /* Initialise mapping tables for code/data. */
8605 bfd_elf32_arm_init_maps (ibfd);
8606
8607 if (!bfd_elf32_arm_process_before_allocation (ibfd, info)
8608 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info))
8609 /* xgettext:c-format */
8610 _bfd_error_handler (_("Errors encountered processing file %s"),
8611 ibfd->filename);
8612 }
d504ffc8 8613
252b5132
RH		 8614 /* The check_relocs and adjust_dynamic_symbol entry points have
8615 determined the sizes of the various dynamic sections. Allocate
8616 memory for them. */
b34976b6
AM		 8617 plt = FALSE;
8618 relocs = FALSE;
252b5132
RH		 8619 for (s = dynobj->sections; s != NULL; s = s->next)
8620 {
8621 const char * name;
252b5132
RH		 8622
8623 if ((s->flags & SEC_LINKER_CREATED) == 0)
8624 continue;
8625
8626 /* It's OK to base decisions on the section name, because none
8627 of the dynobj section names depend upon the input files. */
8628 name = bfd_get_section_name (dynobj, s);
8629
24a1ba0f 8630 if (strcmp (name, ".plt") == 0)
252b5132 8631 {
c456f082
AM		 8632 /* Remember whether there is a PLT. */
8633 plt = s->size != 0;
252b5132 8634 }
0112cd26 8635 else if (CONST_STRNEQ (name, ".rel"))
252b5132 8636 {
c456f082 8637 if (s->size != 0)
252b5132 8638 {
252b5132 8639 /* Remember whether there are any reloc sections other
00a97672
RS		 8640 than .rel(a).plt and .rela.plt.unloaded. */
8641 if (s != htab->srelplt && s != htab->srelplt2)
b34976b6 8642 relocs = TRUE;
252b5132
RH		 8643
8644 /* We use the reloc_count field as a counter if we need
8645 to copy relocs into the output file. */
8646 s->reloc_count = 0;
8647 }
8648 }
0112cd26 8649 else if (! CONST_STRNEQ (name, ".got")
c456f082 8650 && strcmp (name, ".dynbss") != 0)
252b5132
RH		 8651 {
8652 /* It's not one of our sections, so don't allocate space. */
8653 continue;
8654 }
8655
c456f082 8656 if (s->size == 0)
252b5132 8657 {
c456f082 8658 /* If we don't need this section, strip it from the
00a97672
RS		 8659 output file. This is mostly to handle .rel(a).bss and
8660 .rel(a).plt. We must create both sections in
c456f082
AM		 8661 create_dynamic_sections, because they must be created
8662 before the linker maps input sections to output
8663 sections. The linker does that before
8664 adjust_dynamic_symbol is called, and it is that
8665 function which decides whether anything needs to go
8666 into these sections. */
8423293d 8667 s->flags |= SEC_EXCLUDE;
252b5132
RH		 8668 continue;
8669 }
8670
c456f082
AM		 8671 if ((s->flags & SEC_HAS_CONTENTS) == 0)
8672 continue;
8673
252b5132 8674 /* Allocate memory for the section contents. */
eea6121a 8675 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
c456f082 8676 if (s->contents == NULL)
b34976b6 8677 return FALSE;
252b5132
RH		 8678 }
8679
8680 if (elf_hash_table (info)->dynamic_sections_created)
8681 {
8682 /* Add some entries to the .dynamic section. We fill in the
8683 values later, in elf32_arm_finish_dynamic_sections, but we
8684 must add the entries now so that we get the correct size for
8685 the .dynamic section. The DT_DEBUG entry is filled in by the
8686 dynamic linker and used by the debugger. */
dc810e39 8687#define add_dynamic_entry(TAG, VAL) \
5a580b3a 8688 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 8689
8532796c 8690 if (info->executable)
252b5132 8691 {
dc810e39 8692 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 8693 return FALSE;
252b5132
RH		 8694 }
8695
8696 if (plt)
8697 {
dc810e39
AM		 8698 if ( !add_dynamic_entry (DT_PLTGOT, 0)
8699 || !add_dynamic_entry (DT_PLTRELSZ, 0)
00a97672
RS		 8700 || !add_dynamic_entry (DT_PLTREL,
8701 htab->use_rel ? DT_REL : DT_RELA)
dc810e39 8702 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 8703 return FALSE;
252b5132
RH		 8704 }
8705
8706 if (relocs)
8707 {
00a97672
RS		 8708 if (htab->use_rel)
8709 {
8710 if (!add_dynamic_entry (DT_REL, 0)
8711 || !add_dynamic_entry (DT_RELSZ, 0)
8712 || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab)))
8713 return FALSE;
8714 }
8715 else
8716 {
8717 if (!add_dynamic_entry (DT_RELA, 0)
8718 || !add_dynamic_entry (DT_RELASZ, 0)
8719 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
8720 return FALSE;
8721 }
252b5132
RH		 8722 }
8723
08d1f311
DJ		 8724 /* If any dynamic relocs apply to a read-only section,
8725 then we need a DT_TEXTREL entry. */
8726 if ((info->flags & DF_TEXTREL) == 0)
8727 elf_link_hash_traverse (&htab->root, elf32_arm_readonly_dynrelocs,
8728 (PTR) info);
8729
99e4ae17 8730 if ((info->flags & DF_TEXTREL) != 0)
252b5132 8731 {
dc810e39 8732 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 8733 return FALSE;
252b5132 8734 }
7a2b07ff
NS		 8735 if (htab->vxworks_p
8736 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
8737 return FALSE;
252b5132 8738 }
8532796c 8739#undef add_dynamic_entry
252b5132 8740
b34976b6 8741 return TRUE;
252b5132
RH		 8742}
8743
252b5132
RH		 8744/* Finish up dynamic symbol handling. We set the contents of various
8745 dynamic sections here. */
8746
b34976b6 8747static bfd_boolean
57e8b36a
NC		 8748elf32_arm_finish_dynamic_symbol (bfd * output_bfd, struct bfd_link_info * info,
8749 struct elf_link_hash_entry * h, Elf_Internal_Sym * sym)
252b5132
RH		 8750{
8751 bfd * dynobj;
e5a52504 8752 struct elf32_arm_link_hash_table *htab;
b7693d02 8753 struct elf32_arm_link_hash_entry *eh;
252b5132
RH		 8754
8755 dynobj = elf_hash_table (info)->dynobj;
e5a52504 8756 htab = elf32_arm_hash_table (info);
b7693d02 8757 eh = (struct elf32_arm_link_hash_entry *) h;
252b5132
RH		 8758
8759 if (h->plt.offset != (bfd_vma) -1)
8760 {
8761 asection * splt;
252b5132 8762 asection * srel;
e5a52504 8763 bfd_byte *loc;
24a1ba0f 8764 bfd_vma plt_index;
947216bf 8765 Elf_Internal_Rela rel;
252b5132
RH		 8766
8767 /* This symbol has an entry in the procedure linkage table. Set
8768 it up. */
8769
8770 BFD_ASSERT (h->dynindx != -1);
8771
8772 splt = bfd_get_section_by_name (dynobj, ".plt");
00a97672 8773 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt"));
e5a52504 8774 BFD_ASSERT (splt != NULL && srel != NULL);
252b5132 8775
e5a52504
MM		 8776 /* Fill in the entry in the procedure linkage table. */
8777 if (htab->symbian_p)
8778 {
52ab56c2
PB		 8779 put_arm_insn (htab, output_bfd,
8780 elf32_arm_symbian_plt_entry[0],
8781 splt->contents + h->plt.offset);
8782 bfd_put_32 (output_bfd,
8783 elf32_arm_symbian_plt_entry[1],
8784 splt->contents + h->plt.offset + 4);
e5a52504
MM		 8785
8786 /* Fill in the entry in the .rel.plt section. */
2a1b9a48
MM		 8787 rel.r_offset = (splt->output_section->vma
8788 + splt->output_offset
52ab56c2 8789 + h->plt.offset + 4);
e5a52504 8790 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
b7693d02
DJ		 8791
8792 /* Get the index in the procedure linkage table which
8793 corresponds to this symbol. This is the index of this symbol
8794 in all the symbols for which we are making plt entries. The
8795 first entry in the procedure linkage table is reserved. */
8796 plt_index = ((h->plt.offset - htab->plt_header_size)
8797 / htab->plt_entry_size);
e5a52504
MM		 8798 }
8799 else
8800 {
00a97672 8801 bfd_vma got_offset, got_address, plt_address;
e5a52504
MM		 8802 bfd_vma got_displacement;
8803 asection * sgot;
52ab56c2 8804 bfd_byte * ptr;
e5a52504
MM		 8805
8806 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
8807 BFD_ASSERT (sgot != NULL);
8808
b7693d02
DJ		 8809 /* Get the offset into the .got.plt table of the entry that
8810 corresponds to this function. */
8811 got_offset = eh->plt_got_offset;
8812
8813 /* Get the index in the procedure linkage table which
8814 corresponds to this symbol. This is the index of this symbol
8815 in all the symbols for which we are making plt entries. The
8816 first three entries in .got.plt are reserved; after that
8817 symbols appear in the same order as in .plt. */
8818 plt_index = (got_offset - 12) / 4;
e5a52504 8819
00a97672
RS		 8820 /* Calculate the address of the GOT entry. */
8821 got_address = (sgot->output_section->vma
8822 + sgot->output_offset
8823 + got_offset);
5e681ec4 8824
00a97672
RS		 8825 /* ...and the address of the PLT entry. */
8826 plt_address = (splt->output_section->vma
8827 + splt->output_offset
8828 + h->plt.offset);
5e681ec4 8829
52ab56c2 8830 ptr = htab->splt->contents + h->plt.offset;
00a97672
RS		 8831 if (htab->vxworks_p && info->shared)
8832 {
8833 unsigned int i;
8834 bfd_vma val;
8835
52ab56c2 8836 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
00a97672
RS		 8837 {
8838 val = elf32_arm_vxworks_shared_plt_entry[i];
8839 if (i == 2)
8840 val |= got_address - sgot->output_section->vma;
8841 if (i == 5)
8842 val |= plt_index * RELOC_SIZE (htab);
52ab56c2
PB		 8843 if (i == 2 || i == 5)
8844 bfd_put_32 (output_bfd, val, ptr);
8845 else
8846 put_arm_insn (htab, output_bfd, val, ptr);
00a97672
RS		 8847 }
8848 }
8849 else if (htab->vxworks_p)
b7693d02 8850 {
00a97672
RS		 8851 unsigned int i;
8852 bfd_vma val;
8853
d3753b85 8854 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
00a97672
RS		 8855 {
8856 val = elf32_arm_vxworks_exec_plt_entry[i];
8857 if (i == 2)
8858 val |= got_address;
8859 if (i == 4)
8860 val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2);
8861 if (i == 5)
8862 val |= plt_index * RELOC_SIZE (htab);
52ab56c2
PB		 8863 if (i == 2 || i == 5)
8864 bfd_put_32 (output_bfd, val, ptr);
8865 else
8866 put_arm_insn (htab, output_bfd, val, ptr);
00a97672
RS		 8867 }
8868
8869 loc = (htab->srelplt2->contents
8870 + (plt_index * 2 + 1) * RELOC_SIZE (htab));
8871
8872 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
8873 referencing the GOT for this PLT entry. */
8874 rel.r_offset = plt_address + 8;
8875 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
8876 rel.r_addend = got_offset;
8877 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
8878 loc += RELOC_SIZE (htab);
8879
8880 /* Create the R_ARM_ABS32 relocation referencing the
8881 beginning of the PLT for this GOT entry. */
8882 rel.r_offset = got_address;
8883 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
8884 rel.r_addend = 0;
8885 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
b7693d02 8886 }
00a97672
RS		 8887 else
8888 {
bd97cb95 8889 bfd_signed_vma thumb_refs;
00a97672
RS		 8890 /* Calculate the displacement between the PLT slot and the
8891 entry in the GOT. The eight-byte offset accounts for the
8892 value produced by adding to pc in the first instruction
8893 of the PLT stub. */
8894 got_displacement = got_address - (plt_address + 8);
b7693d02 8895
00a97672
RS		 8896 BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
8897
bd97cb95
DJ		 8898 thumb_refs = eh->plt_thumb_refcount;
8899 if (!htab->use_blx)
8900 thumb_refs += eh->plt_maybe_thumb_refcount;
8901
8902 if (thumb_refs > 0)
00a97672 8903 {
52ab56c2
PB		 8904 put_thumb_insn (htab, output_bfd,
8905 elf32_arm_plt_thumb_stub[0], ptr - 4);
8906 put_thumb_insn (htab, output_bfd,
8907 elf32_arm_plt_thumb_stub[1], ptr - 2);
00a97672
RS		 8908 }
8909
52ab56c2
PB		 8910 put_arm_insn (htab, output_bfd,
8911 elf32_arm_plt_entry[0]
8912 | ((got_displacement & 0x0ff00000) >> 20),
8913 ptr + 0);
8914 put_arm_insn (htab, output_bfd,
8915 elf32_arm_plt_entry[1]
8916 | ((got_displacement & 0x000ff000) >> 12),
8917 ptr+ 4);
8918 put_arm_insn (htab, output_bfd,
8919 elf32_arm_plt_entry[2]
8920 | (got_displacement & 0x00000fff),
8921 ptr + 8);
5e681ec4 8922#ifdef FOUR_WORD_PLT
52ab56c2 8923 bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12);
5e681ec4 8924#endif
00a97672 8925 }
252b5132 8926
e5a52504
MM		 8927 /* Fill in the entry in the global offset table. */
8928 bfd_put_32 (output_bfd,
8929 (splt->output_section->vma
8930 + splt->output_offset),
8931 sgot->contents + got_offset);
8932
00a97672
RS		 8933 /* Fill in the entry in the .rel(a).plt section. */
8934 rel.r_addend = 0;
8935 rel.r_offset = got_address;
e5a52504
MM		 8936 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
8937 }
57e8b36a 8938
00a97672
RS		 8939 loc = srel->contents + plt_index * RELOC_SIZE (htab);
8940 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
252b5132 8941
f5385ebf 8942 if (!h->def_regular)
252b5132
RH		 8943 {
8944 /* Mark the symbol as undefined, rather than as defined in
8945 the .plt section. Leave the value alone. */
8946 sym->st_shndx = SHN_UNDEF;
d982ba73
PB		 8947 /* If the symbol is weak, we do need to clear the value.
8948 Otherwise, the PLT entry would provide a definition for
8949 the symbol even if the symbol wasn't defined anywhere,
8950 and so the symbol would never be NULL. */
f5385ebf 8951 if (!h->ref_regular_nonweak)
d982ba73 8952 sym->st_value = 0;
252b5132
RH		 8953 }
8954 }
8955
ba93b8ac
DJ		 8956 if (h->got.offset != (bfd_vma) -1
8957 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0
8958 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0)
252b5132
RH		 8959 {
8960 asection * sgot;
8961 asection * srel;
947216bf
AM		 8962 Elf_Internal_Rela rel;
8963 bfd_byte *loc;
00a97672 8964 bfd_vma offset;
252b5132
RH		 8965
8966 /* This symbol has an entry in the global offset table. Set it
8967 up. */
252b5132 8968 sgot = bfd_get_section_by_name (dynobj, ".got");
00a97672 8969 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got"));
252b5132
RH		 8970 BFD_ASSERT (sgot != NULL && srel != NULL);
8971
00a97672
RS		 8972 offset = (h->got.offset & ~(bfd_vma) 1);
8973 rel.r_addend = 0;
252b5132
RH		 8974 rel.r_offset = (sgot->output_section->vma
8975 + sgot->output_offset
00a97672 8976 + offset);
252b5132 8977
5e681ec4
PB		 8978 /* If this is a static link, or it is a -Bsymbolic link and the
8979 symbol is defined locally or was forced to be local because
8980 of a version file, we just want to emit a RELATIVE reloc.
8981 The entry in the global offset table will already have been
8982 initialized in the relocate_section function. */
252b5132 8983 if (info->shared
5e681ec4
PB		 8984 && SYMBOL_REFERENCES_LOCAL (info, h))
8985 {
8986 BFD_ASSERT((h->got.offset & 1) != 0);
8987 rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
00a97672
RS		 8988 if (!htab->use_rel)
8989 {
8990 rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
8991 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
8992 }
5e681ec4 8993 }
252b5132
RH		 8994 else
8995 {
5e681ec4 8996 BFD_ASSERT((h->got.offset & 1) == 0);
00a97672 8997 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
252b5132
RH		 8998 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
8999 }
9000
00a97672
RS		 9001 loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab);
9002 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
252b5132
RH		 9003 }
9004
f5385ebf 9005 if (h->needs_copy)
252b5132
RH		 9006 {
9007 asection * s;
947216bf
AM		 9008 Elf_Internal_Rela rel;
9009 bfd_byte *loc;
252b5132
RH		 9010
9011 /* This symbol needs a copy reloc. Set it up. */
252b5132
RH		 9012 BFD_ASSERT (h->dynindx != -1
9013 && (h->root.type == bfd_link_hash_defined
9014 || h->root.type == bfd_link_hash_defweak));
9015
9016 s = bfd_get_section_by_name (h->root.u.def.section->owner,
00a97672 9017 RELOC_SECTION (htab, ".bss"));
252b5132
RH		 9018 BFD_ASSERT (s != NULL);
9019
00a97672 9020 rel.r_addend = 0;
252b5132
RH		 9021 rel.r_offset = (h->root.u.def.value
9022 + h->root.u.def.section->output_section->vma
9023 + h->root.u.def.section->output_offset);
9024 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
00a97672
RS		 9025 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
9026 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
252b5132
RH		 9027 }
9028
00a97672
RS		 9029 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
9030 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
9031 to the ".got" section. */
252b5132 9032 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
00a97672 9033 || (!htab->vxworks_p && h == htab->root.hgot))
252b5132
RH		 9034 sym->st_shndx = SHN_ABS;
9035
b34976b6 9036 return TRUE;
252b5132
RH		 9037}
9038
9039/* Finish up the dynamic sections. */
9040
b34976b6 9041static bfd_boolean
57e8b36a 9042elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
252b5132
RH		 9043{
9044 bfd * dynobj;
9045 asection * sgot;
9046 asection * sdyn;
9047
9048 dynobj = elf_hash_table (info)->dynobj;
9049
9050 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
229fcec5 9051 BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL);
252b5132
RH		 9052 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
9053
9054 if (elf_hash_table (info)->dynamic_sections_created)
9055 {
9056 asection *splt;
9057 Elf32_External_Dyn *dyncon, *dynconend;
229fcec5 9058 struct elf32_arm_link_hash_table *htab;
252b5132 9059
229fcec5 9060 htab = elf32_arm_hash_table (info);
252b5132 9061 splt = bfd_get_section_by_name (dynobj, ".plt");
24a1ba0f 9062 BFD_ASSERT (splt != NULL && sdyn != NULL);
252b5132
RH		 9063
9064 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 9065 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9b485d32 9066
252b5132
RH		 9067 for (; dyncon < dynconend; dyncon++)
9068 {
9069 Elf_Internal_Dyn dyn;
9070 const char * name;
9071 asection * s;
9072
9073 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
9074
9075 switch (dyn.d_tag)
9076 {
229fcec5
MM		 9077 unsigned int type;
9078
252b5132 9079 default:
7a2b07ff
NS		 9080 if (htab->vxworks_p
9081 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
9082 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 9083 break;
9084
229fcec5
MM		 9085 case DT_HASH:
9086 name = ".hash";
9087 goto get_vma_if_bpabi;
9088 case DT_STRTAB:
9089 name = ".dynstr";
9090 goto get_vma_if_bpabi;
9091 case DT_SYMTAB:
9092 name = ".dynsym";
9093 goto get_vma_if_bpabi;
c0042f5d
MM		 9094 case DT_VERSYM:
9095 name = ".gnu.version";
9096 goto get_vma_if_bpabi;
9097 case DT_VERDEF:
9098 name = ".gnu.version_d";
9099 goto get_vma_if_bpabi;
9100 case DT_VERNEED:
9101 name = ".gnu.version_r";
9102 goto get_vma_if_bpabi;
9103
252b5132
RH		 9104 case DT_PLTGOT:
9105 name = ".got";
9106 goto get_vma;
9107 case DT_JMPREL:
00a97672 9108 name = RELOC_SECTION (htab, ".plt");
252b5132
RH		 9109 get_vma:
9110 s = bfd_get_section_by_name (output_bfd, name);
9111 BFD_ASSERT (s != NULL);
229fcec5
MM		 9112 if (!htab->symbian_p)
9113 dyn.d_un.d_ptr = s->vma;
9114 else
9115 /* In the BPABI, tags in the PT_DYNAMIC section point
9116 at the file offset, not the memory address, for the
9117 convenience of the post linker. */
9118 dyn.d_un.d_ptr = s->filepos;
252b5132
RH		 9119 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9120 break;
9121
229fcec5
MM		 9122 get_vma_if_bpabi:
9123 if (htab->symbian_p)
9124 goto get_vma;
9125 break;
9126
252b5132 9127 case DT_PLTRELSZ:
00a97672
RS		 9128 s = bfd_get_section_by_name (output_bfd,
9129 RELOC_SECTION (htab, ".plt"));
252b5132 9130 BFD_ASSERT (s != NULL);
eea6121a 9131 dyn.d_un.d_val = s->size;
252b5132
RH		 9132 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9133 break;
229fcec5 9134
252b5132 9135 case DT_RELSZ:
00a97672 9136 case DT_RELASZ:
229fcec5
MM		 9137 if (!htab->symbian_p)
9138 {
9139 /* My reading of the SVR4 ABI indicates that the
9140 procedure linkage table relocs (DT_JMPREL) should be
9141 included in the overall relocs (DT_REL). This is
9142 what Solaris does. However, UnixWare can not handle
9143 that case. Therefore, we override the DT_RELSZ entry
9144 here to make it not include the JMPREL relocs. Since
00a97672 9145 the linker script arranges for .rel(a).plt to follow all
229fcec5
MM		 9146 other relocation sections, we don't have to worry
9147 about changing the DT_REL entry. */
00a97672
RS		 9148 s = bfd_get_section_by_name (output_bfd,
9149 RELOC_SECTION (htab, ".plt"));
229fcec5
MM		 9150 if (s != NULL)
9151 dyn.d_un.d_val -= s->size;
9152 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9153 break;
9154 }
9155 /* Fall through */
9156
9157 case DT_REL:
9158 case DT_RELA:
229fcec5
MM		 9159 /* In the BPABI, the DT_REL tag must point at the file
9160 offset, not the VMA, of the first relocation
9161 section. So, we use code similar to that in
9162 elflink.c, but do not check for SHF_ALLOC on the
9163 relcoation section, since relocations sections are
9164 never allocated under the BPABI. The comments above
9165 about Unixware notwithstanding, we include all of the
9166 relocations here. */
9167 if (htab->symbian_p)
9168 {
9169 unsigned int i;
9170 type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
9171 ? SHT_REL : SHT_RELA);
9172 dyn.d_un.d_val = 0;
9173 for (i = 1; i < elf_numsections (output_bfd); i++)
9174 {
9175 Elf_Internal_Shdr *hdr
9176 = elf_elfsections (output_bfd)[i];
9177 if (hdr->sh_type == type)
9178 {
9179 if (dyn.d_tag == DT_RELSZ
9180 || dyn.d_tag == DT_RELASZ)
9181 dyn.d_un.d_val += hdr->sh_size;
de52dba4
AM		 9182 else if ((ufile_ptr) hdr->sh_offset
9183 <= dyn.d_un.d_val - 1)
229fcec5
MM		 9184 dyn.d_un.d_val = hdr->sh_offset;
9185 }
9186 }
9187 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
9188 }
252b5132 9189 break;
88f7bcd5
NC		 9190
9191 /* Set the bottom bit of DT_INIT/FINI if the
9192 corresponding function is Thumb. */
9193 case DT_INIT:
9194 name = info->init_function;
9195 goto get_sym;
9196 case DT_FINI:
9197 name = info->fini_function;
9198 get_sym:
9199 /* If it wasn't set by elf_bfd_final_link
4cc11e76 9200 then there is nothing to adjust. */
88f7bcd5
NC		 9201 if (dyn.d_un.d_val != 0)
9202 {
9203 struct elf_link_hash_entry * eh;
9204
9205 eh = elf_link_hash_lookup (elf_hash_table (info), name,
b34976b6 9206 FALSE, FALSE, TRUE);
88f7bcd5
NC		 9207 if (eh != (struct elf_link_hash_entry *) NULL
9208 && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC)
9209 {
9210 dyn.d_un.d_val |= 1;
b34976b6 9211 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
88f7bcd5
NC		 9212 }
9213 }
9214 break;
252b5132
RH		 9215 }
9216 }
9217
24a1ba0f 9218 /* Fill in the first entry in the procedure linkage table. */
e5a52504 9219 if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size)
f7a74f8c 9220 {
00a97672
RS		 9221 const bfd_vma *plt0_entry;
9222 bfd_vma got_address, plt_address, got_displacement;
9223
9224 /* Calculate the addresses of the GOT and PLT. */
9225 got_address = sgot->output_section->vma + sgot->output_offset;
9226 plt_address = splt->output_section->vma + splt->output_offset;
9227
9228 if (htab->vxworks_p)
9229 {
9230 /* The VxWorks GOT is relocated by the dynamic linker.
9231 Therefore, we must emit relocations rather than simply
9232 computing the values now. */
9233 Elf_Internal_Rela rel;
9234
9235 plt0_entry = elf32_arm_vxworks_exec_plt0_entry;
52ab56c2
PB		 9236 put_arm_insn (htab, output_bfd, plt0_entry[0],
9237 splt->contents + 0);
9238 put_arm_insn (htab, output_bfd, plt0_entry[1],
9239 splt->contents + 4);
9240 put_arm_insn (htab, output_bfd, plt0_entry[2],
9241 splt->contents + 8);
00a97672
RS		 9242 bfd_put_32 (output_bfd, got_address, splt->contents + 12);
9243
9244 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
9245 rel.r_offset = plt_address + 12;
9246 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
9247 rel.r_addend = 0;
9248 SWAP_RELOC_OUT (htab) (output_bfd, &rel,
9249 htab->srelplt2->contents);
9250 }
9251 else
9252 {
9253 got_displacement = got_address - (plt_address + 16);
9254
9255 plt0_entry = elf32_arm_plt0_entry;
52ab56c2
PB		 9256 put_arm_insn (htab, output_bfd, plt0_entry[0],
9257 splt->contents + 0);
9258 put_arm_insn (htab, output_bfd, plt0_entry[1],
9259 splt->contents + 4);
9260 put_arm_insn (htab, output_bfd, plt0_entry[2],
9261 splt->contents + 8);
9262 put_arm_insn (htab, output_bfd, plt0_entry[3],
9263 splt->contents + 12);
5e681ec4 9264
5e681ec4 9265#ifdef FOUR_WORD_PLT
00a97672
RS		 9266 /* The displacement value goes in the otherwise-unused
9267 last word of the second entry. */
9268 bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
5e681ec4 9269#else
00a97672 9270 bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
5e681ec4 9271#endif
00a97672 9272 }
f7a74f8c 9273 }
252b5132
RH		 9274
9275 /* UnixWare sets the entsize of .plt to 4, although that doesn't
9276 really seem like the right value. */
74541ad4
AM		 9277 if (splt->output_section->owner == output_bfd)
9278 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
00a97672
RS		 9279
9280 if (htab->vxworks_p && !info->shared && htab->splt->size > 0)
9281 {
9282 /* Correct the .rel(a).plt.unloaded relocations. They will have
9283 incorrect symbol indexes. */
9284 int num_plts;
eed62c48 9285 unsigned char *p;
00a97672
RS		 9286
9287 num_plts = ((htab->splt->size - htab->plt_header_size)
9288 / htab->plt_entry_size);
9289 p = htab->srelplt2->contents + RELOC_SIZE (htab);
9290
9291 for (; num_plts; num_plts--)
9292 {
9293 Elf_Internal_Rela rel;
9294
9295 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
9296 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
9297 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
9298 p += RELOC_SIZE (htab);
9299
9300 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
9301 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
9302 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
9303 p += RELOC_SIZE (htab);
9304 }
9305 }
252b5132
RH		 9306 }
9307
9308 /* Fill in the first three entries in the global offset table. */
229fcec5 9309 if (sgot)
252b5132 9310 {
229fcec5
MM		 9311 if (sgot->size > 0)
9312 {
9313 if (sdyn == NULL)
9314 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
9315 else
9316 bfd_put_32 (output_bfd,
9317 sdyn->output_section->vma + sdyn->output_offset,
9318 sgot->contents);
9319 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
9320 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
9321 }
252b5132 9322
229fcec5
MM		 9323 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
9324 }
252b5132 9325
b34976b6 9326 return TRUE;
252b5132
RH		 9327}
9328
ba96a88f 9329static void
57e8b36a 9330elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
ba96a88f 9331{
9b485d32 9332 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
e489d0ae 9333 struct elf32_arm_link_hash_table *globals;
ba96a88f
NC		 9334
9335 i_ehdrp = elf_elfheader (abfd);
9336
94a3258f
PB		 9337 if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
9338 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
9339 else
9340 i_ehdrp->e_ident[EI_OSABI] = 0;
ba96a88f 9341 i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
e489d0ae 9342
93204d3a
PB		 9343 if (link_info)
9344 {
9345 globals = elf32_arm_hash_table (link_info);
9346 if (globals->byteswap_code)
9347 i_ehdrp->e_flags |= EF_ARM_BE8;
9348 }
ba96a88f
NC		 9349}
9350
99e4ae17 9351static enum elf_reloc_type_class
57e8b36a 9352elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
99e4ae17 9353{
f51e552e 9354 switch ((int) ELF32_R_TYPE (rela->r_info))
99e4ae17
AJ		 9355 {
9356 case R_ARM_RELATIVE:
9357 return reloc_class_relative;
9358 case R_ARM_JUMP_SLOT:
9359 return reloc_class_plt;
9360 case R_ARM_COPY:
9361 return reloc_class_copy;
9362 default:
9363 return reloc_class_normal;
9364 }
9365}
9366
e16bb312
NC		 9367/* Set the right machine number for an Arm ELF file. */
9368
9369static bfd_boolean
57e8b36a 9370elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
e16bb312
NC		 9371{
9372 if (hdr->sh_type == SHT_NOTE)
9373 *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
9374
9375 return TRUE;
9376}
9377
e489d0ae 9378static void
57e8b36a 9379elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
e16bb312 9380{
5a6c6817 9381 bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
e16bb312
NC		 9382}
9383
40a18ebd
NC		 9384/* Return TRUE if this is an unwinding table entry. */
9385
9386static bfd_boolean
9387is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
9388{
0112cd26
NC		 9389 return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind)
9390 || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once));
40a18ebd
NC		 9391}
9392
9393
9394/* Set the type and flags for an ARM section. We do this by
9395 the section name, which is a hack, but ought to work. */
9396
9397static bfd_boolean
9398elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
9399{
9400 const char * name;
9401
9402 name = bfd_get_section_name (abfd, sec);
9403
9404 if (is_arm_elf_unwind_section_name (abfd, name))
9405 {
9406 hdr->sh_type = SHT_ARM_EXIDX;
9407 hdr->sh_flags |= SHF_LINK_ORDER;
9408 }
9409 return TRUE;
9410}
9411
6dc132d9
L		 9412/* Handle an ARM specific section when reading an object file. This is
9413 called when bfd_section_from_shdr finds a section with an unknown
9414 type. */
40a18ebd
NC		 9415
9416static bfd_boolean
9417elf32_arm_section_from_shdr (bfd *abfd,
9418 Elf_Internal_Shdr * hdr,
6dc132d9
L		 9419 const char *name,
9420 int shindex)
40a18ebd
NC		 9421{
9422 /* There ought to be a place to keep ELF backend specific flags, but
9423 at the moment there isn't one. We just keep track of the
9424 sections by their name, instead. Fortunately, the ABI gives
9425 names for all the ARM specific sections, so we will probably get
9426 away with this. */
9427 switch (hdr->sh_type)
9428 {
9429 case SHT_ARM_EXIDX:
0951f019
RE		 9430 case SHT_ARM_PREEMPTMAP:
9431 case SHT_ARM_ATTRIBUTES:
40a18ebd
NC		 9432 break;
9433
9434 default:
9435 return FALSE;
9436 }
9437
6dc132d9 9438 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
40a18ebd
NC		 9439 return FALSE;
9440
9441 return TRUE;
9442}
e489d0ae 9443
8e3de13a
NC		 9444/* A structure used to record a list of sections, independently
9445 of the next and prev fields in the asection structure. */
9446typedef struct section_list
9447{
9448 asection * sec;
9449 struct section_list * next;
9450 struct section_list * prev;
9451}
9452section_list;
9453
9454/* Unfortunately we need to keep a list of sections for which
9455 an _arm_elf_section_data structure has been allocated. This
9456 is because it is possible for functions like elf32_arm_write_section
9457 to be called on a section which has had an elf_data_structure
9458 allocated for it (and so the used_by_bfd field is valid) but
9459 for which the ARM extended version of this structure - the
9460 _arm_elf_section_data structure - has not been allocated. */
9461static section_list * sections_with_arm_elf_section_data = NULL;
9462
9463static void
957c6e41 9464record_section_with_arm_elf_section_data (asection * sec)
8e3de13a
NC		 9465{
9466 struct section_list * entry;
9467
957c6e41 9468 entry = bfd_malloc (sizeof (* entry));
8e3de13a
NC		 9469 if (entry == NULL)
9470 return;
9471 entry->sec = sec;
9472 entry->next = sections_with_arm_elf_section_data;
9473 entry->prev = NULL;
9474 if (entry->next != NULL)
9475 entry->next->prev = entry;
9476 sections_with_arm_elf_section_data = entry;
9477}
9478
44444f50
NC		 9479static struct section_list *
9480find_arm_elf_section_entry (asection * sec)
8e3de13a
NC		 9481{
9482 struct section_list * entry;
bd4aae00 9483 static struct section_list * last_entry = NULL;
8e3de13a 9484
bd4aae00
NC		 9485 /* This is a short cut for the typical case where the sections are added
9486 to the sections_with_arm_elf_section_data list in forward order and
9487 then looked up here in backwards order. This makes a real difference
9488 to the ld-srec/sec64k.exp linker test. */
44444f50 9489 entry = sections_with_arm_elf_section_data;
bd4aae00
NC		 9490 if (last_entry != NULL)
9491 {
9492 if (last_entry->sec == sec)
44444f50
NC		 9493 entry = last_entry;
9494 else if (last_entry->next != NULL
9495 && last_entry->next->sec == sec)
9496 entry = last_entry->next;
bd4aae00 9497 }
44444f50
NC		 9498
9499 for (; entry; entry = entry->next)
8e3de13a 9500 if (entry->sec == sec)
44444f50 9501 break;
bd4aae00 9502
44444f50
NC		 9503 if (entry)
9504 /* Record the entry prior to this one - it is the entry we are most
9505 likely to want to locate next time. Also this way if we have been
9506 called from unrecord_section_with_arm_elf_section_data() we will not
9507 be caching a pointer that is about to be freed. */
9508 last_entry = entry->prev;
9509
9510 return entry;
9511}
9512
9513static _arm_elf_section_data *
9514get_arm_elf_section_data (asection * sec)
9515{
9516 struct section_list * entry;
9517
9518 entry = find_arm_elf_section_entry (sec);
9519
9520 if (entry)
9521 return elf32_arm_section_data (entry->sec);
9522 else
9523 return NULL;
8e3de13a
NC		 9524}
9525
9526static void
9527unrecord_section_with_arm_elf_section_data (asection * sec)
9528{
9529 struct section_list * entry;
9530
44444f50
NC		 9531 entry = find_arm_elf_section_entry (sec);
9532
9533 if (entry)
9534 {
9535 if (entry->prev != NULL)
9536 entry->prev->next = entry->next;
9537 if (entry->next != NULL)
9538 entry->next->prev = entry->prev;
9539 if (entry == sections_with_arm_elf_section_data)
9540 sections_with_arm_elf_section_data = entry->next;
9541 free (entry);
9542 }
8e3de13a
NC		 9543}
9544
e489d0ae 9545
4e617b1e
PB		 9546typedef struct
9547{
9548 void *finfo;
9549 struct bfd_link_info *info;
91a5743d
PB		 9550 asection *sec;
9551 int sec_shndx;
4e617b1e
PB		 9552 bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *,
9553 asection *, struct elf_link_hash_entry *);
9554} output_arch_syminfo;
9555
9556enum map_symbol_type
9557{
9558 ARM_MAP_ARM,
9559 ARM_MAP_THUMB,
9560 ARM_MAP_DATA
9561};
9562
9563
9564/* Output a single PLT mapping symbol. */
9565
9566static bfd_boolean
9567elf32_arm_ouput_plt_map_sym (output_arch_syminfo *osi,
9568 enum map_symbol_type type,
9569 bfd_vma offset)
9570{
9571 static const char *names[3] = {"$a", "$t", "$d"};
9572 struct elf32_arm_link_hash_table *htab;
9573 Elf_Internal_Sym sym;
9574
9575 htab = elf32_arm_hash_table (osi->info);
91a5743d
PB		 9576 sym.st_value = osi->sec->output_section->vma
9577 + osi->sec->output_offset
9578 + offset;
4e617b1e
PB		 9579 sym.st_size = 0;
9580 sym.st_other = 0;
9581 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
91a5743d
PB		 9582 sym.st_shndx = osi->sec_shndx;
9583 if (!osi->func (osi->finfo, names[type], &sym, osi->sec, NULL))
4e617b1e
PB		 9584 return FALSE;
9585 return TRUE;
9586}
9587
9588
9589/* Output mapping symbols for PLT entries associated with H. */
9590
9591static bfd_boolean
9592elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf)
9593{
9594 output_arch_syminfo *osi = (output_arch_syminfo *) inf;
9595 struct elf32_arm_link_hash_table *htab;
9596 struct elf32_arm_link_hash_entry *eh;
9597 bfd_vma addr;
9598
9599 htab = elf32_arm_hash_table (osi->info);
9600
9601 if (h->root.type == bfd_link_hash_indirect)
9602 return TRUE;
9603
9604 if (h->root.type == bfd_link_hash_warning)
9605 /* When warning symbols are created, they **replace** the "real"
9606 entry in the hash table, thus we never get to see the real
9607 symbol in a hash traversal. So look at it now. */
9608 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9609
9610 if (h->plt.offset == (bfd_vma) -1)
9611 return TRUE;
9612
9613 eh = (struct elf32_arm_link_hash_entry *) h;
9614 addr = h->plt.offset;
9615 if (htab->symbian_p)
9616 {
9617 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9618 return FALSE;
9619 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 4))
9620 return FALSE;
9621 }
9622 else if (htab->vxworks_p)
9623 {
9624 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9625 return FALSE;
9626 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 8))
9627 return FALSE;
9628 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr + 12))
9629 return FALSE;
9630 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 20))
9631 return FALSE;
9632 }
9633 else
9634 {
bd97cb95
DJ		 9635 bfd_signed_vma thumb_refs;
9636
9637 thumb_refs = eh->plt_thumb_refcount;
9638 if (!htab->use_blx)
9639 thumb_refs += eh->plt_maybe_thumb_refcount;
4e617b1e 9640
bd97cb95 9641 if (thumb_refs > 0)
4e617b1e
PB		 9642 {
9643 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_THUMB, addr - 4))
9644 return FALSE;
9645 }
9646#ifdef FOUR_WORD_PLT
9647 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9648 return FALSE;
9649 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_DATA, addr + 12))
9650 return FALSE;
9651#else
9652 /* A three-word PLT with no Thumb thunk contains only Arm code,
9653 so only need to output a mapping symbol for the first PLT entry and
9654 entries with thumb thunks. */
bd97cb95 9655 if (thumb_refs > 0 || addr == 20)
4e617b1e
PB		 9656 {
9657 if (!elf32_arm_ouput_plt_map_sym (osi, ARM_MAP_ARM, addr))
9658 return FALSE;
9659 }
9660#endif
9661 }
9662
9663 return TRUE;
9664}
9665
9666
91a5743d 9667/* Output mapping symbols for linker generated sections. */
4e617b1e
PB		 9668
9669static bfd_boolean
9670elf32_arm_output_arch_local_syms (bfd *output_bfd,
9671 struct bfd_link_info *info,
9672 void *finfo, bfd_boolean (*func) (void *, const char *,
9673 Elf_Internal_Sym *,
9674 asection *,
9675 struct elf_link_hash_entry *))
9676{
9677 output_arch_syminfo osi;
9678 struct elf32_arm_link_hash_table *htab;
91a5743d
PB		 9679 bfd_vma offset;
9680 bfd_size_type size;
4e617b1e
PB		 9681
9682 htab = elf32_arm_hash_table (info);
4e617b1e 9683 check_use_blx(htab);
91a5743d 9684
4e617b1e
PB		 9685 osi.finfo = finfo;
9686 osi.info = info;
9687 osi.func = func;
91a5743d
PB		 9688
9689 /* ARM->Thumb glue. */
9690 if (htab->arm_glue_size > 0)
9691 {
9692 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
9693 ARM2THUMB_GLUE_SECTION_NAME);
9694
9695 osi.sec_shndx = _bfd_elf_section_from_bfd_section
9696 (output_bfd, osi.sec->output_section);
9697 if (info->shared || htab->root.is_relocatable_executable
9698 || htab->pic_veneer)
9699 size = ARM2THUMB_PIC_GLUE_SIZE;
9700 else if (htab->use_blx)
9701 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
9702 else
9703 size = ARM2THUMB_STATIC_GLUE_SIZE;
4e617b1e 9704
91a5743d
PB		 9705 for (offset = 0; offset < htab->arm_glue_size; offset += size)
9706 {
9707 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, offset);
9708 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, offset + size - 4);
9709 }
9710 }
9711
9712 /* Thumb->ARM glue. */
9713 if (htab->thumb_glue_size > 0)
9714 {
9715 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
9716 THUMB2ARM_GLUE_SECTION_NAME);
9717
9718 osi.sec_shndx = _bfd_elf_section_from_bfd_section
9719 (output_bfd, osi.sec->output_section);
9720 size = THUMB2ARM_GLUE_SIZE;
9721
9722 for (offset = 0; offset < htab->thumb_glue_size; offset += size)
9723 {
9724 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_THUMB, offset);
9725 elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, offset + 4);
9726 }
9727 }
9728
9729 /* Finally, output mapping symbols for the PLT. */
9730 if (!htab->splt || htab->splt->size == 0)
9731 return TRUE;
9732
9733 osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
9734 htab->splt->output_section);
9735 osi.sec = htab->splt;
4e617b1e
PB		 9736 /* Output mapping symbols for the plt header. SymbianOS does not have a
9737 plt header. */
9738 if (htab->vxworks_p)
9739 {
9740 /* VxWorks shared libraries have no PLT header. */
9741 if (!info->shared)
9742 {
9743 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0))
9744 return FALSE;
9745 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 12))
9746 return FALSE;
9747 }
9748 }
9749 else if (!htab->symbian_p)
9750 {
9751 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_ARM, 0))
9752 return FALSE;
9753#ifndef FOUR_WORD_PLT
9754 if (!elf32_arm_ouput_plt_map_sym (&osi, ARM_MAP_DATA, 16))
9755 return FALSE;
9756#endif
9757 }
9758
9759 elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi);
9760 return TRUE;
9761}
9762
e489d0ae
PB		 9763/* Allocate target specific section data. */
9764
9765static bfd_boolean
9766elf32_arm_new_section_hook (bfd *abfd, asection *sec)
9767{
f592407e
AM		 9768 if (!sec->used_by_bfd)
9769 {
9770 _arm_elf_section_data *sdata;
9771 bfd_size_type amt = sizeof (*sdata);
e489d0ae 9772
f592407e
AM		 9773 sdata = bfd_zalloc (abfd, amt);
9774 if (sdata == NULL)
9775 return FALSE;
9776 sec->used_by_bfd = sdata;
9777 }
e489d0ae 9778
957c6e41 9779 record_section_with_arm_elf_section_data (sec);
8e3de13a 9780
e489d0ae
PB		 9781 return _bfd_elf_new_section_hook (abfd, sec);
9782}
9783
9784
9785/* Used to order a list of mapping symbols by address. */
9786
9787static int
9788elf32_arm_compare_mapping (const void * a, const void * b)
9789{
7f6a71ff
JM		 9790 const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a;
9791 const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b;
9792
9793 if (amap->vma > bmap->vma)
9794 return 1;
9795 else if (amap->vma < bmap->vma)
9796 return -1;
9797 else if (amap->type > bmap->type)
9798 /* Ensure results do not depend on the host qsort for objects with
9799 multiple mapping symbols at the same address by sorting on type
9800 after vma. */
9801 return 1;
9802 else if (amap->type < bmap->type)
9803 return -1;
9804 else
9805 return 0;
e489d0ae
PB		 9806}
9807
9808
9809/* Do code byteswapping. Return FALSE afterwards so that the section is
9810 written out as normal. */
9811
9812static bfd_boolean
c7b8f16e
JB		 9813elf32_arm_write_section (bfd *output_bfd,
9814 struct bfd_link_info *link_info, asection *sec,
e489d0ae
PB		 9815 bfd_byte *contents)
9816{
c7b8f16e 9817 int mapcount, errcount;
8e3de13a 9818 _arm_elf_section_data *arm_data;
c7b8f16e 9819 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
e489d0ae 9820 elf32_arm_section_map *map;
c7b8f16e 9821 elf32_vfp11_erratum_list *errnode;
e489d0ae
PB		 9822 bfd_vma ptr;
9823 bfd_vma end;
c7b8f16e 9824 bfd_vma offset = sec->output_section->vma + sec->output_offset;
e489d0ae
PB		 9825 bfd_byte tmp;
9826 int i;
57e8b36a 9827
8e3de13a
NC		 9828 /* If this section has not been allocated an _arm_elf_section_data
9829 structure then we cannot record anything. */
9830 arm_data = get_arm_elf_section_data (sec);
9831 if (arm_data == NULL)
9832 return FALSE;
9833
9834 mapcount = arm_data->mapcount;
9835 map = arm_data->map;
c7b8f16e
JB		 9836 errcount = arm_data->erratumcount;
9837
9838 if (errcount != 0)
9839 {
9840 unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0;
9841
9842 for (errnode = arm_data->erratumlist; errnode != 0;
9843 errnode = errnode->next)
9844 {
9845 bfd_vma index = errnode->vma - offset;
9846
9847 switch (errnode->type)
9848 {
9849 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
9850 {
9851 bfd_vma branch_to_veneer;
9852 /* Original condition code of instruction, plus bit mask for
9853 ARM B instruction. */
9854 unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000)
9855 | 0x0a000000;
9856
9857 /* The instruction is before the label. */
9858 index -= 4;
9859
9860 /* Above offset included in -4 below. */
9861 branch_to_veneer = errnode->u.b.veneer->vma
9862 - errnode->vma - 4;
9863
9864 if ((signed) branch_to_veneer < -(1 << 25)
9865 || (signed) branch_to_veneer >= (1 << 25))
9866 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
9867 "range"), output_bfd);
9868
9869 insn |= (branch_to_veneer >> 2) & 0xffffff;
9870 contents[endianflip ^ index] = insn & 0xff;
9871 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
9872 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
9873 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
9874 }
9875 break;
9876
9877 case VFP11_ERRATUM_ARM_VENEER:
9878 {
9879 bfd_vma branch_from_veneer;
9880 unsigned int insn;
9881
9882 /* Take size of veneer into account. */
9883 branch_from_veneer = errnode->u.v.branch->vma
9884 - errnode->vma - 12;
9885
9886 if ((signed) branch_from_veneer < -(1 << 25)
9887 || (signed) branch_from_veneer >= (1 << 25))
9888 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
9889 "range"), output_bfd);
9890
9891 /* Original instruction. */
9892 insn = errnode->u.v.branch->u.b.vfp_insn;
9893 contents[endianflip ^ index] = insn & 0xff;
9894 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
9895 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
9896 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
9897
9898 /* Branch back to insn after original insn. */
9899 insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff);
9900 contents[endianflip ^ (index + 4)] = insn & 0xff;
9901 contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff;
9902 contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff;
9903 contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff;
9904 }
9905 break;
9906
9907 default:
9908 abort ();
9909 }
9910 }
9911 }
e489d0ae
PB		 9912
9913 if (mapcount == 0)
9914 return FALSE;
9915
c7b8f16e 9916 if (globals->byteswap_code)
e489d0ae 9917 {
c7b8f16e 9918 qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
57e8b36a 9919
c7b8f16e
JB		 9920 ptr = map[0].vma;
9921 for (i = 0; i < mapcount; i++)
9922 {
9923 if (i == mapcount - 1)
9924 end = sec->size;
9925 else
9926 end = map[i + 1].vma;
e489d0ae 9927
c7b8f16e 9928 switch (map[i].type)
e489d0ae 9929 {
c7b8f16e
JB		 9930 case 'a':
9931 /* Byte swap code words. */
9932 while (ptr + 3 < end)
9933 {
9934 tmp = contents[ptr];
9935 contents[ptr] = contents[ptr + 3];
9936 contents[ptr + 3] = tmp;
9937 tmp = contents[ptr + 1];
9938 contents[ptr + 1] = contents[ptr + 2];
9939 contents[ptr + 2] = tmp;
9940 ptr += 4;
9941 }
9942 break;
e489d0ae 9943
c7b8f16e
JB		 9944 case 't':
9945 /* Byte swap code halfwords. */
9946 while (ptr + 1 < end)
9947 {
9948 tmp = contents[ptr];
9949 contents[ptr] = contents[ptr + 1];
9950 contents[ptr + 1] = tmp;
9951 ptr += 2;
9952 }
9953 break;
9954
9955 case 'd':
9956 /* Leave data alone. */
9957 break;
9958 }
9959 ptr = end;
9960 }
e489d0ae 9961 }
8e3de13a 9962
93204d3a 9963 free (map);
8e3de13a 9964 arm_data->mapcount = 0;
c7b8f16e 9965 arm_data->mapsize = 0;
8e3de13a
NC		 9966 arm_data->map = NULL;
9967 unrecord_section_with_arm_elf_section_data (sec);
9968
e489d0ae
PB		 9969 return FALSE;
9970}
9971
957c6e41
NC		 9972static void
9973unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED,
9974 asection * sec,
9975 void * ignore ATTRIBUTE_UNUSED)
9976{
9977 unrecord_section_with_arm_elf_section_data (sec);
9978}
9979
9980static bfd_boolean
9981elf32_arm_close_and_cleanup (bfd * abfd)
9982{
b25e3d87
L		 9983 if (abfd->sections)
9984 bfd_map_over_sections (abfd,
9985 unrecord_section_via_map_over_sections,
9986 NULL);
957c6e41
NC		 9987
9988 return _bfd_elf_close_and_cleanup (abfd);
9989}
9990
b25e3d87
L		 9991static bfd_boolean
9992elf32_arm_bfd_free_cached_info (bfd * abfd)
9993{
9994 if (abfd->sections)
9995 bfd_map_over_sections (abfd,
9996 unrecord_section_via_map_over_sections,
9997 NULL);
9998
9999 return _bfd_free_cached_info (abfd);
10000}
10001
b7693d02
DJ		 10002/* Display STT_ARM_TFUNC symbols as functions. */
10003
10004static void
10005elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
10006 asymbol *asym)
10007{
10008 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
10009
10010 if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC)
10011 elfsym->symbol.flags |= BSF_FUNCTION;
10012}
10013
0beaef2b
PB		 10014
10015/* Mangle thumb function symbols as we read them in. */
10016
8384fb8f 10017static bfd_boolean
0beaef2b
PB		 10018elf32_arm_swap_symbol_in (bfd * abfd,
10019 const void *psrc,
10020 const void *pshn,
10021 Elf_Internal_Sym *dst)
10022{
8384fb8f
AM		 10023 if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
10024 return FALSE;
0beaef2b
PB		 10025
10026 /* New EABI objects mark thumb function symbols by setting the low bit of
10027 the address. Turn these into STT_ARM_TFUNC. */
10028 if (ELF_ST_TYPE (dst->st_info) == STT_FUNC
10029 && (dst->st_value & 1))
10030 {
10031 dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
10032 dst->st_value &= ~(bfd_vma) 1;
10033 }
8384fb8f 10034 return TRUE;
0beaef2b
PB		 10035}
10036
10037
10038/* Mangle thumb function symbols as we write them out. */
10039
10040static void
10041elf32_arm_swap_symbol_out (bfd *abfd,
10042 const Elf_Internal_Sym *src,
10043 void *cdst,
10044 void *shndx)
10045{
10046 Elf_Internal_Sym newsym;
10047
10048 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
10049 of the address set, as per the new EABI. We do this unconditionally
10050 because objcopy does not set the elf header flags until after
10051 it writes out the symbol table. */
10052 if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC)
10053 {
10054 newsym = *src;
10055 newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
0fa3dcad
PB		 10056 if (newsym.st_shndx != SHN_UNDEF)
10057 {
10058 /* Do this only for defined symbols. At link type, the static
10059 linker will simulate the work of dynamic linker of resolving
10060 symbols and will carry over the thumbness of found symbols to
10061 the output symbol table. It's not clear how it happens, but
b0fead2b 10062 the thumbness of undefined symbols can well be different at
0fa3dcad
PB		 10063 runtime, and writing '1' for them will be confusing for users
10064 and possibly for dynamic linker itself.
10065 */
10066 newsym.st_value |= 1;
10067 }
0beaef2b
PB		 10068
10069 src = &newsym;
10070 }
10071 bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
10072}
10073
b294bdf8
MM		 10074/* Add the PT_ARM_EXIDX program header. */
10075
10076static bfd_boolean
10077elf32_arm_modify_segment_map (bfd *abfd,
10078 struct bfd_link_info *info ATTRIBUTE_UNUSED)
10079{
10080 struct elf_segment_map *m;
10081 asection *sec;
10082
10083 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
10084 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
10085 {
10086 /* If there is already a PT_ARM_EXIDX header, then we do not
10087 want to add another one. This situation arises when running
10088 "strip"; the input binary already has the header. */
10089 m = elf_tdata (abfd)->segment_map;
10090 while (m && m->p_type != PT_ARM_EXIDX)
10091 m = m->next;
10092 if (!m)
10093 {
10094 m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
10095 if (m == NULL)
10096 return FALSE;
10097 m->p_type = PT_ARM_EXIDX;
10098 m->count = 1;
10099 m->sections[0] = sec;
10100
10101 m->next = elf_tdata (abfd)->segment_map;
10102 elf_tdata (abfd)->segment_map = m;
10103 }
10104 }
10105
10106 return TRUE;
10107}
10108
10109/* We may add a PT_ARM_EXIDX program header. */
10110
10111static int
a6b96beb
AM		 10112elf32_arm_additional_program_headers (bfd *abfd,
10113 struct bfd_link_info *info ATTRIBUTE_UNUSED)
b294bdf8
MM		 10114{
10115 asection *sec;
10116
10117 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
10118 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
10119 return 1;
10120 else
10121 return 0;
10122}
10123
fcb93ecf
PB		 10124/* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
10125static bfd_boolean
10126elf32_arm_is_function_type (unsigned int type)
10127{
10128 return (type == STT_FUNC) || (type == STT_ARM_TFUNC);
10129}
10130
0beaef2b
PB		 10131/* We use this to override swap_symbol_in and swap_symbol_out. */
10132const struct elf_size_info elf32_arm_size_info = {
10133 sizeof (Elf32_External_Ehdr),
10134 sizeof (Elf32_External_Phdr),
10135 sizeof (Elf32_External_Shdr),
10136 sizeof (Elf32_External_Rel),
10137 sizeof (Elf32_External_Rela),
10138 sizeof (Elf32_External_Sym),
10139 sizeof (Elf32_External_Dyn),
10140 sizeof (Elf_External_Note),
10141 4,
10142 1,
10143 32, 2,
10144 ELFCLASS32, EV_CURRENT,
10145 bfd_elf32_write_out_phdrs,
10146 bfd_elf32_write_shdrs_and_ehdr,
1489a3a0 10147 bfd_elf32_checksum_contents,
0beaef2b
PB		 10148 bfd_elf32_write_relocs,
10149 elf32_arm_swap_symbol_in,
10150 elf32_arm_swap_symbol_out,
10151 bfd_elf32_slurp_reloc_table,
10152 bfd_elf32_slurp_symbol_table,
10153 bfd_elf32_swap_dyn_in,
10154 bfd_elf32_swap_dyn_out,
10155 bfd_elf32_swap_reloc_in,
10156 bfd_elf32_swap_reloc_out,
10157 bfd_elf32_swap_reloca_in,
10158 bfd_elf32_swap_reloca_out
10159};
10160
252b5132
RH		 10161#define ELF_ARCH bfd_arch_arm
10162#define ELF_MACHINE_CODE EM_ARM
d0facd1b
NC		 10163#ifdef __QNXTARGET__
10164#define ELF_MAXPAGESIZE 0x1000
10165#else
f21f3fe0 10166#define ELF_MAXPAGESIZE 0x8000
d0facd1b 10167#endif
b1342370 10168#define ELF_MINPAGESIZE 0x1000
24718e3b 10169#define ELF_COMMONPAGESIZE 0x1000
252b5132 10170
ba93b8ac
DJ		 10171#define bfd_elf32_mkobject elf32_arm_mkobject
10172
99e4ae17
AJ		 10173#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
10174#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
252b5132
RH		 10175#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
10176#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
10177#define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
dc810e39 10178#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
157090f7 10179#define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
252b5132 10180#define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
4ab527b0 10181#define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
e489d0ae 10182#define bfd_elf32_new_section_hook elf32_arm_new_section_hook
3c9458e9 10183#define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
957c6e41 10184#define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
b25e3d87 10185#define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
252b5132
RH		 10186
10187#define elf_backend_get_symbol_type elf32_arm_get_symbol_type
10188#define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
6a5bb875 10189#define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
252b5132
RH		 10190#define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
10191#define elf_backend_check_relocs elf32_arm_check_relocs
dc810e39 10192#define elf_backend_relocate_section elf32_arm_relocate_section
e489d0ae 10193#define elf_backend_write_section elf32_arm_write_section
252b5132 10194#define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
5e681ec4 10195#define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
252b5132
RH		 10196#define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
10197#define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
10198#define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
74541ad4 10199#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
ba96a88f 10200#define elf_backend_post_process_headers elf32_arm_post_process_headers
99e4ae17 10201#define elf_backend_reloc_type_class elf32_arm_reloc_type_class
c178919b 10202#define elf_backend_object_p elf32_arm_object_p
e16bb312 10203#define elf_backend_section_flags elf32_arm_section_flags
40a18ebd
NC		 10204#define elf_backend_fake_sections elf32_arm_fake_sections
10205#define elf_backend_section_from_shdr elf32_arm_section_from_shdr
e16bb312 10206#define elf_backend_final_write_processing elf32_arm_final_write_processing
5e681ec4 10207#define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
b7693d02 10208#define elf_backend_symbol_processing elf32_arm_symbol_processing
0beaef2b 10209#define elf_backend_size_info elf32_arm_size_info
b294bdf8
MM		 10210#define elf_backend_modify_segment_map elf32_arm_modify_segment_map
10211#define elf_backend_additional_program_headers \
10212 elf32_arm_additional_program_headers
4e617b1e
PB		 10213#define elf_backend_output_arch_local_syms \
10214 elf32_arm_output_arch_local_syms
a4fd1a8e
PB		 10215#define elf_backend_begin_write_processing \
10216 elf32_arm_begin_write_processing
fcb93ecf 10217#define elf_backend_is_function_type elf32_arm_is_function_type
252b5132 10218
5e681ec4 10219#define elf_backend_can_refcount 1
252b5132
RH		 10220#define elf_backend_can_gc_sections 1
10221#define elf_backend_plt_readonly 1
10222#define elf_backend_want_got_plt 1
10223#define elf_backend_want_plt_sym 0
4e7fd91e
PB		 10224#define elf_backend_may_use_rel_p 1
10225#define elf_backend_may_use_rela_p 0
10226#define elf_backend_default_use_rela_p 0
252b5132 10227
04f7c78d 10228#define elf_backend_got_header_size 12
04f7c78d 10229
104d59d1
JM		 10230#undef elf_backend_obj_attrs_vendor
10231#define elf_backend_obj_attrs_vendor "aeabi"
10232#undef elf_backend_obj_attrs_section
10233#define elf_backend_obj_attrs_section ".ARM.attributes"
10234#undef elf_backend_obj_attrs_arg_type
10235#define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
10236#undef elf_backend_obj_attrs_section_type
10237#define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
10238
252b5132 10239#include "elf32-target.h"
7f266840 10240
4e7fd91e
PB		 10241/* VxWorks Targets */
10242
10243#undef TARGET_LITTLE_SYM
10244#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
10245#undef TARGET_LITTLE_NAME
10246#define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
10247#undef TARGET_BIG_SYM
10248#define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
10249#undef TARGET_BIG_NAME
10250#define TARGET_BIG_NAME "elf32-bigarm-vxworks"
10251
10252/* Like elf32_arm_link_hash_table_create -- but overrides
10253 appropriately for VxWorks. */
10254static struct bfd_link_hash_table *
10255elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
10256{
10257 struct bfd_link_hash_table *ret;
10258
10259 ret = elf32_arm_link_hash_table_create (abfd);
10260 if (ret)
10261 {
10262 struct elf32_arm_link_hash_table *htab
00a97672 10263 = (struct elf32_arm_link_hash_table *) ret;
4e7fd91e 10264 htab->use_rel = 0;
00a97672 10265 htab->vxworks_p = 1;
4e7fd91e
PB		 10266 }
10267 return ret;
10268}
10269
00a97672
RS		 10270static void
10271elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
10272{
10273 elf32_arm_final_write_processing (abfd, linker);
10274 elf_vxworks_final_write_processing (abfd, linker);
10275}
10276
4e7fd91e
PB		 10277#undef elf32_bed
10278#define elf32_bed elf32_arm_vxworks_bed
10279
10280#undef bfd_elf32_bfd_link_hash_table_create
10281#define bfd_elf32_bfd_link_hash_table_create \
10282 elf32_arm_vxworks_link_hash_table_create
00a97672
RS		 10283#undef elf_backend_add_symbol_hook
10284#define elf_backend_add_symbol_hook \
10285 elf_vxworks_add_symbol_hook
10286#undef elf_backend_final_write_processing
10287#define elf_backend_final_write_processing \
10288 elf32_arm_vxworks_final_write_processing
10289#undef elf_backend_emit_relocs
10290#define elf_backend_emit_relocs \
10291 elf_vxworks_emit_relocs
4e7fd91e
PB		 10292
10293#undef elf_backend_may_use_rel_p
00a97672 10294#define elf_backend_may_use_rel_p 0
4e7fd91e 10295#undef elf_backend_may_use_rela_p
00a97672 10296#define elf_backend_may_use_rela_p 1
4e7fd91e 10297#undef elf_backend_default_use_rela_p
00a97672 10298#define elf_backend_default_use_rela_p 1
00a97672
RS		 10299#undef elf_backend_want_plt_sym
10300#define elf_backend_want_plt_sym 1
10301#undef ELF_MAXPAGESIZE
10302#define ELF_MAXPAGESIZE 0x1000
4e7fd91e
PB		 10303
10304#include "elf32-target.h"
10305
10306
7f266840
DJ		 10307/* Symbian OS Targets */
10308
10309#undef TARGET_LITTLE_SYM
10310#define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
10311#undef TARGET_LITTLE_NAME
10312#define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
10313#undef TARGET_BIG_SYM
10314#define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
10315#undef TARGET_BIG_NAME
10316#define TARGET_BIG_NAME "elf32-bigarm-symbian"
10317
10318/* Like elf32_arm_link_hash_table_create -- but overrides
10319 appropriately for Symbian OS. */
10320static struct bfd_link_hash_table *
10321elf32_arm_symbian_link_hash_table_create (bfd *abfd)
10322{
10323 struct bfd_link_hash_table *ret;
10324
10325 ret = elf32_arm_link_hash_table_create (abfd);
10326 if (ret)
10327 {
10328 struct elf32_arm_link_hash_table *htab
10329 = (struct elf32_arm_link_hash_table *)ret;
10330 /* There is no PLT header for Symbian OS. */
10331 htab->plt_header_size = 0;
10332 /* The PLT entries are each three instructions. */
10333 htab->plt_entry_size = 4 * NUM_ELEM (elf32_arm_symbian_plt_entry);
10334 htab->symbian_p = 1;
33bfe774
JB		 10335 /* Symbian uses armv5t or above, so use_blx is always true. */
10336 htab->use_blx = 1;
67687978 10337 htab->root.is_relocatable_executable = 1;
7f266840
DJ		 10338 }
10339 return ret;
10340}
10341
b35d266b 10342static const struct bfd_elf_special_section
551b43fd 10343elf32_arm_symbian_special_sections[] =
7f266840 10344{
5cd3778d
MM		 10345 /* In a BPABI executable, the dynamic linking sections do not go in
10346 the loadable read-only segment. The post-linker may wish to
10347 refer to these sections, but they are not part of the final
10348 program image. */
0112cd26
NC		 10349 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 },
10350 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 },
10351 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 },
10352 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 },
10353 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 },
5cd3778d
MM		 10354 /* These sections do not need to be writable as the SymbianOS
10355 postlinker will arrange things so that no dynamic relocation is
10356 required. */
0112cd26
NC		 10357 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC },
10358 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC },
10359 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
10360 { NULL, 0, 0, 0, 0 }
7f266840
DJ		 10361};
10362
c3c76620 10363static void
b34af79c 10364elf32_arm_symbian_begin_write_processing (bfd *abfd,
a4fd1a8e 10365 struct bfd_link_info *link_info)
c3c76620
MM		 10366{
10367 /* BPABI objects are never loaded directly by an OS kernel; they are
10368 processed by a postlinker first, into an OS-specific format. If
10369 the D_PAGED bit is set on the file, BFD will align segments on
10370 page boundaries, so that an OS can directly map the file. With
10371 BPABI objects, that just results in wasted space. In addition,
10372 because we clear the D_PAGED bit, map_sections_to_segments will
10373 recognize that the program headers should not be mapped into any
10374 loadable segment. */
10375 abfd->flags &= ~D_PAGED;
a4fd1a8e 10376 elf32_arm_begin_write_processing(abfd, link_info);
c3c76620 10377}
7f266840
DJ		 10378
10379static bfd_boolean
b34af79c 10380elf32_arm_symbian_modify_segment_map (bfd *abfd,
b294bdf8 10381 struct bfd_link_info *info)
7f266840
DJ		 10382{
10383 struct elf_segment_map *m;
10384 asection *dynsec;
10385
7f266840
DJ		 10386 /* BPABI shared libraries and executables should have a PT_DYNAMIC
10387 segment. However, because the .dynamic section is not marked
10388 with SEC_LOAD, the generic ELF code will not create such a
10389 segment. */
10390 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
10391 if (dynsec)
10392 {
8ded5a0f
AM		 10393 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
10394 if (m->p_type == PT_DYNAMIC)
10395 break;
10396
10397 if (m == NULL)
10398 {
10399 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
10400 m->next = elf_tdata (abfd)->segment_map;
10401 elf_tdata (abfd)->segment_map = m;
10402 }
7f266840
DJ		 10403 }
10404
b294bdf8
MM		 10405 /* Also call the generic arm routine. */
10406 return elf32_arm_modify_segment_map (abfd, info);
7f266840
DJ		 10407}
10408
10409#undef elf32_bed
10410#define elf32_bed elf32_arm_symbian_bed
10411
10412/* The dynamic sections are not allocated on SymbianOS; the postlinker
10413 will process them and then discard them. */
10414#undef ELF_DYNAMIC_SEC_FLAGS
10415#define ELF_DYNAMIC_SEC_FLAGS \
10416 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
10417
10418#undef bfd_elf32_bfd_link_hash_table_create
10419#define bfd_elf32_bfd_link_hash_table_create \
10420 elf32_arm_symbian_link_hash_table_create
00a97672 10421#undef elf_backend_add_symbol_hook
7f266840 10422
29ef7005
L		 10423#undef elf_backend_special_sections
10424#define elf_backend_special_sections elf32_arm_symbian_special_sections
7f266840 10425
c3c76620
MM		 10426#undef elf_backend_begin_write_processing
10427#define elf_backend_begin_write_processing \
10428 elf32_arm_symbian_begin_write_processing
00a97672
RS		 10429#undef elf_backend_final_write_processing
10430#define elf_backend_final_write_processing \
10431 elf32_arm_final_write_processing
10432#undef elf_backend_emit_relocs
c3c76620 10433
7f266840
DJ		 10434#undef elf_backend_modify_segment_map
10435#define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
10436
10437/* There is no .got section for BPABI objects, and hence no header. */
10438#undef elf_backend_got_header_size
10439#define elf_backend_got_header_size 0
10440
10441/* Similarly, there is no .got.plt section. */
10442#undef elf_backend_want_got_plt
10443#define elf_backend_want_got_plt 0
10444
4e7fd91e 10445#undef elf_backend_may_use_rel_p
00a97672 10446#define elf_backend_may_use_rel_p 1
4e7fd91e 10447#undef elf_backend_may_use_rela_p
00a97672 10448#define elf_backend_may_use_rela_p 0
4e7fd91e 10449#undef elf_backend_default_use_rela_p
00a97672 10450#define elf_backend_default_use_rela_p 0
00a97672
RS		 10451#undef elf_backend_want_plt_sym
10452#define elf_backend_want_plt_sym 0
10453#undef ELF_MAXPAGESIZE
10454#define ELF_MAXPAGESIZE 0x8000
4e7fd91e 10455
7f266840 10456#include "elf32-target.h"
GDB Binutils - Deliverables
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