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* inferior.h (read_pc, write_pc): Remove.
[deliverable/binutils-gdb.git] / bfd / elf32-arm.c
CommitLineData
252b5132 1/* 32-bit ELF support for ARM
e44a2c9c
AM		 2 Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
3 2008 Free Software Foundation, Inc.
252b5132
RH		 4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
252b5132
RH		 10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
cd123cb7
NC		 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
252b5132 21
7f266840 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
00a97672 24#include "libiberty.h"
7f266840
DJ		 25#include "libbfd.h"
26#include "elf-bfd.h"
00a97672 27#include "elf-vxworks.h"
ee065d83 28#include "elf/arm.h"
7f266840 29
00a97672
RS		 30/* Return the relocation section associated with NAME. HTAB is the
31 bfd's elf32_arm_link_hash_entry. */
32#define RELOC_SECTION(HTAB, NAME) \
33 ((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
34
35/* Return size of a relocation entry. HTAB is the bfd's
36 elf32_arm_link_hash_entry. */
37#define RELOC_SIZE(HTAB) \
38 ((HTAB)->use_rel \
39 ? sizeof (Elf32_External_Rel) \
40 : sizeof (Elf32_External_Rela))
41
42/* Return function to swap relocations in. HTAB is the bfd's
43 elf32_arm_link_hash_entry. */
44#define SWAP_RELOC_IN(HTAB) \
45 ((HTAB)->use_rel \
46 ? bfd_elf32_swap_reloc_in \
47 : bfd_elf32_swap_reloca_in)
48
49/* Return function to swap relocations out. HTAB is the bfd's
50 elf32_arm_link_hash_entry. */
51#define SWAP_RELOC_OUT(HTAB) \
52 ((HTAB)->use_rel \
53 ? bfd_elf32_swap_reloc_out \
54 : bfd_elf32_swap_reloca_out)
55
7f266840
DJ		 56#define elf_info_to_howto 0
57#define elf_info_to_howto_rel elf32_arm_info_to_howto
58
59#define ARM_ELF_ABI_VERSION 0
60#define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
61
24718e3b 62static struct elf_backend_data elf32_arm_vxworks_bed;
00a97672 63
3e6b1042
DJ		 64static bfd_boolean elf32_arm_write_section (bfd *output_bfd,
65 struct bfd_link_info *link_info,
66 asection *sec,
67 bfd_byte *contents);
68
7f266840
DJ		 69/* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
70 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
71 in that slot. */
72
c19d1205 73static reloc_howto_type elf32_arm_howto_table_1[] =
7f266840 74{
8029a119 75 /* No relocation. */
7f266840
DJ		 76 HOWTO (R_ARM_NONE, /* type */
77 0, /* rightshift */
78 0, /* size (0 = byte, 1 = short, 2 = long) */
79 0, /* bitsize */
80 FALSE, /* pc_relative */
81 0, /* bitpos */
82 complain_overflow_dont,/* complain_on_overflow */
83 bfd_elf_generic_reloc, /* special_function */
84 "R_ARM_NONE", /* name */
85 FALSE, /* partial_inplace */
86 0, /* src_mask */
87 0, /* dst_mask */
88 FALSE), /* pcrel_offset */
89
90 HOWTO (R_ARM_PC24, /* type */
91 2, /* rightshift */
92 2, /* size (0 = byte, 1 = short, 2 = long) */
93 24, /* bitsize */
94 TRUE, /* pc_relative */
95 0, /* bitpos */
96 complain_overflow_signed,/* complain_on_overflow */
97 bfd_elf_generic_reloc, /* special_function */
98 "R_ARM_PC24", /* name */
99 FALSE, /* partial_inplace */
100 0x00ffffff, /* src_mask */
101 0x00ffffff, /* dst_mask */
102 TRUE), /* pcrel_offset */
103
104 /* 32 bit absolute */
105 HOWTO (R_ARM_ABS32, /* type */
106 0, /* rightshift */
107 2, /* size (0 = byte, 1 = short, 2 = long) */
108 32, /* bitsize */
109 FALSE, /* pc_relative */
110 0, /* bitpos */
111 complain_overflow_bitfield,/* complain_on_overflow */
112 bfd_elf_generic_reloc, /* special_function */
113 "R_ARM_ABS32", /* name */
114 FALSE, /* partial_inplace */
115 0xffffffff, /* src_mask */
116 0xffffffff, /* dst_mask */
117 FALSE), /* pcrel_offset */
118
119 /* standard 32bit pc-relative reloc */
120 HOWTO (R_ARM_REL32, /* type */
121 0, /* rightshift */
122 2, /* size (0 = byte, 1 = short, 2 = long) */
123 32, /* bitsize */
124 TRUE, /* pc_relative */
125 0, /* bitpos */
126 complain_overflow_bitfield,/* complain_on_overflow */
127 bfd_elf_generic_reloc, /* special_function */
128 "R_ARM_REL32", /* name */
129 FALSE, /* partial_inplace */
130 0xffffffff, /* src_mask */
131 0xffffffff, /* dst_mask */
132 TRUE), /* pcrel_offset */
133
c19d1205 134 /* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
4962c51a 135 HOWTO (R_ARM_LDR_PC_G0, /* type */
7f266840
DJ		 136 0, /* rightshift */
137 0, /* size (0 = byte, 1 = short, 2 = long) */
4962c51a
MS		 138 32, /* bitsize */
139 TRUE, /* pc_relative */
7f266840 140 0, /* bitpos */
4962c51a 141 complain_overflow_dont,/* complain_on_overflow */
7f266840 142 bfd_elf_generic_reloc, /* special_function */
4962c51a 143 "R_ARM_LDR_PC_G0", /* name */
7f266840 144 FALSE, /* partial_inplace */
4962c51a
MS		 145 0xffffffff, /* src_mask */
146 0xffffffff, /* dst_mask */
147 TRUE), /* pcrel_offset */
7f266840
DJ		 148
149 /* 16 bit absolute */
150 HOWTO (R_ARM_ABS16, /* type */
151 0, /* rightshift */
152 1, /* size (0 = byte, 1 = short, 2 = long) */
153 16, /* bitsize */
154 FALSE, /* pc_relative */
155 0, /* bitpos */
156 complain_overflow_bitfield,/* complain_on_overflow */
157 bfd_elf_generic_reloc, /* special_function */
158 "R_ARM_ABS16", /* name */
159 FALSE, /* partial_inplace */
160 0x0000ffff, /* src_mask */
161 0x0000ffff, /* dst_mask */
162 FALSE), /* pcrel_offset */
163
164 /* 12 bit absolute */
165 HOWTO (R_ARM_ABS12, /* type */
166 0, /* rightshift */
167 2, /* size (0 = byte, 1 = short, 2 = long) */
168 12, /* bitsize */
169 FALSE, /* pc_relative */
170 0, /* bitpos */
171 complain_overflow_bitfield,/* complain_on_overflow */
172 bfd_elf_generic_reloc, /* special_function */
173 "R_ARM_ABS12", /* name */
174 FALSE, /* partial_inplace */
00a97672
RS		 175 0x00000fff, /* src_mask */
176 0x00000fff, /* dst_mask */
7f266840
DJ		 177 FALSE), /* pcrel_offset */
178
179 HOWTO (R_ARM_THM_ABS5, /* type */
180 6, /* rightshift */
181 1, /* size (0 = byte, 1 = short, 2 = long) */
182 5, /* bitsize */
183 FALSE, /* pc_relative */
184 0, /* bitpos */
185 complain_overflow_bitfield,/* complain_on_overflow */
186 bfd_elf_generic_reloc, /* special_function */
187 "R_ARM_THM_ABS5", /* name */
188 FALSE, /* partial_inplace */
189 0x000007e0, /* src_mask */
190 0x000007e0, /* dst_mask */
191 FALSE), /* pcrel_offset */
192
193 /* 8 bit absolute */
194 HOWTO (R_ARM_ABS8, /* type */
195 0, /* rightshift */
196 0, /* size (0 = byte, 1 = short, 2 = long) */
197 8, /* bitsize */
198 FALSE, /* pc_relative */
199 0, /* bitpos */
200 complain_overflow_bitfield,/* complain_on_overflow */
201 bfd_elf_generic_reloc, /* special_function */
202 "R_ARM_ABS8", /* name */
203 FALSE, /* partial_inplace */
204 0x000000ff, /* src_mask */
205 0x000000ff, /* dst_mask */
206 FALSE), /* pcrel_offset */
207
208 HOWTO (R_ARM_SBREL32, /* type */
209 0, /* rightshift */
210 2, /* size (0 = byte, 1 = short, 2 = long) */
211 32, /* bitsize */
212 FALSE, /* pc_relative */
213 0, /* bitpos */
214 complain_overflow_dont,/* complain_on_overflow */
215 bfd_elf_generic_reloc, /* special_function */
216 "R_ARM_SBREL32", /* name */
217 FALSE, /* partial_inplace */
218 0xffffffff, /* src_mask */
219 0xffffffff, /* dst_mask */
220 FALSE), /* pcrel_offset */
221
c19d1205 222 HOWTO (R_ARM_THM_CALL, /* type */
7f266840
DJ		 223 1, /* rightshift */
224 2, /* size (0 = byte, 1 = short, 2 = long) */
e95de063 225 25, /* bitsize */
7f266840
DJ		 226 TRUE, /* pc_relative */
227 0, /* bitpos */
228 complain_overflow_signed,/* complain_on_overflow */
229 bfd_elf_generic_reloc, /* special_function */
c19d1205 230 "R_ARM_THM_CALL", /* name */
7f266840
DJ		 231 FALSE, /* partial_inplace */
232 0x07ff07ff, /* src_mask */
233 0x07ff07ff, /* dst_mask */
234 TRUE), /* pcrel_offset */
235
236 HOWTO (R_ARM_THM_PC8, /* type */
237 1, /* rightshift */
238 1, /* size (0 = byte, 1 = short, 2 = long) */
239 8, /* bitsize */
240 TRUE, /* pc_relative */
241 0, /* bitpos */
242 complain_overflow_signed,/* complain_on_overflow */
243 bfd_elf_generic_reloc, /* special_function */
244 "R_ARM_THM_PC8", /* name */
245 FALSE, /* partial_inplace */
246 0x000000ff, /* src_mask */
247 0x000000ff, /* dst_mask */
248 TRUE), /* pcrel_offset */
249
c19d1205 250 HOWTO (R_ARM_BREL_ADJ, /* type */
7f266840
DJ		 251 1, /* rightshift */
252 1, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205
ZW		 253 32, /* bitsize */
254 FALSE, /* pc_relative */
7f266840
DJ		 255 0, /* bitpos */
256 complain_overflow_signed,/* complain_on_overflow */
257 bfd_elf_generic_reloc, /* special_function */
c19d1205 258 "R_ARM_BREL_ADJ", /* name */
7f266840 259 FALSE, /* partial_inplace */
c19d1205
ZW		 260 0xffffffff, /* src_mask */
261 0xffffffff, /* dst_mask */
262 FALSE), /* pcrel_offset */
7f266840
DJ		 263
264 HOWTO (R_ARM_SWI24, /* type */
265 0, /* rightshift */
266 0, /* size (0 = byte, 1 = short, 2 = long) */
267 0, /* bitsize */
268 FALSE, /* pc_relative */
269 0, /* bitpos */
270 complain_overflow_signed,/* complain_on_overflow */
271 bfd_elf_generic_reloc, /* special_function */
272 "R_ARM_SWI24", /* name */
273 FALSE, /* partial_inplace */
274 0x00000000, /* src_mask */
275 0x00000000, /* dst_mask */
276 FALSE), /* pcrel_offset */
277
278 HOWTO (R_ARM_THM_SWI8, /* type */
279 0, /* rightshift */
280 0, /* size (0 = byte, 1 = short, 2 = long) */
281 0, /* bitsize */
282 FALSE, /* pc_relative */
283 0, /* bitpos */
284 complain_overflow_signed,/* complain_on_overflow */
285 bfd_elf_generic_reloc, /* special_function */
286 "R_ARM_SWI8", /* name */
287 FALSE, /* partial_inplace */
288 0x00000000, /* src_mask */
289 0x00000000, /* dst_mask */
290 FALSE), /* pcrel_offset */
291
292 /* BLX instruction for the ARM. */
293 HOWTO (R_ARM_XPC25, /* type */
294 2, /* rightshift */
295 2, /* size (0 = byte, 1 = short, 2 = long) */
296 25, /* bitsize */
297 TRUE, /* pc_relative */
298 0, /* bitpos */
299 complain_overflow_signed,/* complain_on_overflow */
300 bfd_elf_generic_reloc, /* special_function */
301 "R_ARM_XPC25", /* name */
302 FALSE, /* partial_inplace */
303 0x00ffffff, /* src_mask */
304 0x00ffffff, /* dst_mask */
305 TRUE), /* pcrel_offset */
306
307 /* BLX instruction for the Thumb. */
308 HOWTO (R_ARM_THM_XPC22, /* type */
309 2, /* rightshift */
310 2, /* size (0 = byte, 1 = short, 2 = long) */
311 22, /* bitsize */
312 TRUE, /* pc_relative */
313 0, /* bitpos */
314 complain_overflow_signed,/* complain_on_overflow */
315 bfd_elf_generic_reloc, /* special_function */
316 "R_ARM_THM_XPC22", /* name */
317 FALSE, /* partial_inplace */
318 0x07ff07ff, /* src_mask */
319 0x07ff07ff, /* dst_mask */
320 TRUE), /* pcrel_offset */
321
ba93b8ac 322 /* Dynamic TLS relocations. */
7f266840 323
ba93b8ac
DJ		 324 HOWTO (R_ARM_TLS_DTPMOD32, /* type */
325 0, /* rightshift */
326 2, /* size (0 = byte, 1 = short, 2 = long) */
327 32, /* bitsize */
328 FALSE, /* pc_relative */
329 0, /* bitpos */
330 complain_overflow_bitfield,/* complain_on_overflow */
331 bfd_elf_generic_reloc, /* special_function */
332 "R_ARM_TLS_DTPMOD32", /* name */
333 TRUE, /* partial_inplace */
334 0xffffffff, /* src_mask */
335 0xffffffff, /* dst_mask */
336 FALSE), /* pcrel_offset */
7f266840 337
ba93b8ac
DJ		 338 HOWTO (R_ARM_TLS_DTPOFF32, /* type */
339 0, /* rightshift */
340 2, /* size (0 = byte, 1 = short, 2 = long) */
341 32, /* bitsize */
342 FALSE, /* pc_relative */
343 0, /* bitpos */
344 complain_overflow_bitfield,/* complain_on_overflow */
345 bfd_elf_generic_reloc, /* special_function */
346 "R_ARM_TLS_DTPOFF32", /* name */
347 TRUE, /* partial_inplace */
348 0xffffffff, /* src_mask */
349 0xffffffff, /* dst_mask */
350 FALSE), /* pcrel_offset */
7f266840 351
ba93b8ac
DJ		 352 HOWTO (R_ARM_TLS_TPOFF32, /* type */
353 0, /* rightshift */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
355 32, /* bitsize */
356 FALSE, /* pc_relative */
357 0, /* bitpos */
358 complain_overflow_bitfield,/* complain_on_overflow */
359 bfd_elf_generic_reloc, /* special_function */
360 "R_ARM_TLS_TPOFF32", /* name */
361 TRUE, /* partial_inplace */
362 0xffffffff, /* src_mask */
363 0xffffffff, /* dst_mask */
364 FALSE), /* pcrel_offset */
7f266840
DJ		 365
366 /* Relocs used in ARM Linux */
367
368 HOWTO (R_ARM_COPY, /* type */
369 0, /* rightshift */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
371 32, /* bitsize */
372 FALSE, /* pc_relative */
373 0, /* bitpos */
374 complain_overflow_bitfield,/* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_ARM_COPY", /* name */
377 TRUE, /* partial_inplace */
378 0xffffffff, /* src_mask */
379 0xffffffff, /* dst_mask */
380 FALSE), /* pcrel_offset */
381
382 HOWTO (R_ARM_GLOB_DAT, /* type */
383 0, /* rightshift */
384 2, /* size (0 = byte, 1 = short, 2 = long) */
385 32, /* bitsize */
386 FALSE, /* pc_relative */
387 0, /* bitpos */
388 complain_overflow_bitfield,/* complain_on_overflow */
389 bfd_elf_generic_reloc, /* special_function */
390 "R_ARM_GLOB_DAT", /* name */
391 TRUE, /* partial_inplace */
392 0xffffffff, /* src_mask */
393 0xffffffff, /* dst_mask */
394 FALSE), /* pcrel_offset */
395
396 HOWTO (R_ARM_JUMP_SLOT, /* type */
397 0, /* rightshift */
398 2, /* size (0 = byte, 1 = short, 2 = long) */
399 32, /* bitsize */
400 FALSE, /* pc_relative */
401 0, /* bitpos */
402 complain_overflow_bitfield,/* complain_on_overflow */
403 bfd_elf_generic_reloc, /* special_function */
404 "R_ARM_JUMP_SLOT", /* name */
405 TRUE, /* partial_inplace */
406 0xffffffff, /* src_mask */
407 0xffffffff, /* dst_mask */
408 FALSE), /* pcrel_offset */
409
410 HOWTO (R_ARM_RELATIVE, /* type */
411 0, /* rightshift */
412 2, /* size (0 = byte, 1 = short, 2 = long) */
413 32, /* bitsize */
414 FALSE, /* pc_relative */
415 0, /* bitpos */
416 complain_overflow_bitfield,/* complain_on_overflow */
417 bfd_elf_generic_reloc, /* special_function */
418 "R_ARM_RELATIVE", /* name */
419 TRUE, /* partial_inplace */
420 0xffffffff, /* src_mask */
421 0xffffffff, /* dst_mask */
422 FALSE), /* pcrel_offset */
423
c19d1205 424 HOWTO (R_ARM_GOTOFF32, /* type */
7f266840
DJ		 425 0, /* rightshift */
426 2, /* size (0 = byte, 1 = short, 2 = long) */
427 32, /* bitsize */
428 FALSE, /* pc_relative */
429 0, /* bitpos */
430 complain_overflow_bitfield,/* complain_on_overflow */
431 bfd_elf_generic_reloc, /* special_function */
c19d1205 432 "R_ARM_GOTOFF32", /* name */
7f266840
DJ		 433 TRUE, /* partial_inplace */
434 0xffffffff, /* src_mask */
435 0xffffffff, /* dst_mask */
436 FALSE), /* pcrel_offset */
437
438 HOWTO (R_ARM_GOTPC, /* type */
439 0, /* rightshift */
440 2, /* size (0 = byte, 1 = short, 2 = long) */
441 32, /* bitsize */
442 TRUE, /* pc_relative */
443 0, /* bitpos */
444 complain_overflow_bitfield,/* complain_on_overflow */
445 bfd_elf_generic_reloc, /* special_function */
446 "R_ARM_GOTPC", /* name */
447 TRUE, /* partial_inplace */
448 0xffffffff, /* src_mask */
449 0xffffffff, /* dst_mask */
450 TRUE), /* pcrel_offset */
451
452 HOWTO (R_ARM_GOT32, /* type */
453 0, /* rightshift */
454 2, /* size (0 = byte, 1 = short, 2 = long) */
455 32, /* bitsize */
456 FALSE, /* pc_relative */
457 0, /* bitpos */
458 complain_overflow_bitfield,/* complain_on_overflow */
459 bfd_elf_generic_reloc, /* special_function */
460 "R_ARM_GOT32", /* name */
461 TRUE, /* partial_inplace */
462 0xffffffff, /* src_mask */
463 0xffffffff, /* dst_mask */
464 FALSE), /* pcrel_offset */
465
466 HOWTO (R_ARM_PLT32, /* type */
467 2, /* rightshift */
468 2, /* size (0 = byte, 1 = short, 2 = long) */
ce490eda 469 24, /* bitsize */
7f266840
DJ		 470 TRUE, /* pc_relative */
471 0, /* bitpos */
472 complain_overflow_bitfield,/* complain_on_overflow */
473 bfd_elf_generic_reloc, /* special_function */
474 "R_ARM_PLT32", /* name */
ce490eda 475 FALSE, /* partial_inplace */
7f266840
DJ		 476 0x00ffffff, /* src_mask */
477 0x00ffffff, /* dst_mask */
478 TRUE), /* pcrel_offset */
479
480 HOWTO (R_ARM_CALL, /* type */
481 2, /* rightshift */
482 2, /* size (0 = byte, 1 = short, 2 = long) */
483 24, /* bitsize */
484 TRUE, /* pc_relative */
485 0, /* bitpos */
486 complain_overflow_signed,/* complain_on_overflow */
487 bfd_elf_generic_reloc, /* special_function */
488 "R_ARM_CALL", /* name */
489 FALSE, /* partial_inplace */
490 0x00ffffff, /* src_mask */
491 0x00ffffff, /* dst_mask */
492 TRUE), /* pcrel_offset */
493
494 HOWTO (R_ARM_JUMP24, /* type */
495 2, /* rightshift */
496 2, /* size (0 = byte, 1 = short, 2 = long) */
497 24, /* bitsize */
498 TRUE, /* pc_relative */
499 0, /* bitpos */
500 complain_overflow_signed,/* complain_on_overflow */
501 bfd_elf_generic_reloc, /* special_function */
502 "R_ARM_JUMP24", /* name */
503 FALSE, /* partial_inplace */
504 0x00ffffff, /* src_mask */
505 0x00ffffff, /* dst_mask */
506 TRUE), /* pcrel_offset */
507
c19d1205
ZW		 508 HOWTO (R_ARM_THM_JUMP24, /* type */
509 1, /* rightshift */
510 2, /* size (0 = byte, 1 = short, 2 = long) */
511 24, /* bitsize */
512 TRUE, /* pc_relative */
7f266840 513 0, /* bitpos */
c19d1205 514 complain_overflow_signed,/* complain_on_overflow */
7f266840 515 bfd_elf_generic_reloc, /* special_function */
c19d1205 516 "R_ARM_THM_JUMP24", /* name */
7f266840 517 FALSE, /* partial_inplace */
c19d1205
ZW		 518 0x07ff2fff, /* src_mask */
519 0x07ff2fff, /* dst_mask */
520 TRUE), /* pcrel_offset */
7f266840 521
c19d1205 522 HOWTO (R_ARM_BASE_ABS, /* type */
7f266840 523 0, /* rightshift */
c19d1205
ZW		 524 2, /* size (0 = byte, 1 = short, 2 = long) */
525 32, /* bitsize */
7f266840
DJ		 526 FALSE, /* pc_relative */
527 0, /* bitpos */
528 complain_overflow_dont,/* complain_on_overflow */
529 bfd_elf_generic_reloc, /* special_function */
c19d1205 530 "R_ARM_BASE_ABS", /* name */
7f266840 531 FALSE, /* partial_inplace */
c19d1205
ZW		 532 0xffffffff, /* src_mask */
533 0xffffffff, /* dst_mask */
7f266840
DJ		 534 FALSE), /* pcrel_offset */
535
536 HOWTO (R_ARM_ALU_PCREL7_0, /* type */
537 0, /* rightshift */
538 2, /* size (0 = byte, 1 = short, 2 = long) */
539 12, /* bitsize */
540 TRUE, /* pc_relative */
541 0, /* bitpos */
542 complain_overflow_dont,/* complain_on_overflow */
543 bfd_elf_generic_reloc, /* special_function */
544 "R_ARM_ALU_PCREL_7_0", /* name */
545 FALSE, /* partial_inplace */
546 0x00000fff, /* src_mask */
547 0x00000fff, /* dst_mask */
548 TRUE), /* pcrel_offset */
549
550 HOWTO (R_ARM_ALU_PCREL15_8, /* type */
551 0, /* rightshift */
552 2, /* size (0 = byte, 1 = short, 2 = long) */
553 12, /* bitsize */
554 TRUE, /* pc_relative */
555 8, /* bitpos */
556 complain_overflow_dont,/* complain_on_overflow */
557 bfd_elf_generic_reloc, /* special_function */
558 "R_ARM_ALU_PCREL_15_8",/* name */
559 FALSE, /* partial_inplace */
560 0x00000fff, /* src_mask */
561 0x00000fff, /* dst_mask */
562 TRUE), /* pcrel_offset */
563
564 HOWTO (R_ARM_ALU_PCREL23_15, /* type */
565 0, /* rightshift */
566 2, /* size (0 = byte, 1 = short, 2 = long) */
567 12, /* bitsize */
568 TRUE, /* pc_relative */
569 16, /* bitpos */
570 complain_overflow_dont,/* complain_on_overflow */
571 bfd_elf_generic_reloc, /* special_function */
572 "R_ARM_ALU_PCREL_23_15",/* name */
573 FALSE, /* partial_inplace */
574 0x00000fff, /* src_mask */
575 0x00000fff, /* dst_mask */
576 TRUE), /* pcrel_offset */
577
578 HOWTO (R_ARM_LDR_SBREL_11_0, /* type */
579 0, /* rightshift */
580 2, /* size (0 = byte, 1 = short, 2 = long) */
581 12, /* bitsize */
582 FALSE, /* pc_relative */
583 0, /* bitpos */
584 complain_overflow_dont,/* complain_on_overflow */
585 bfd_elf_generic_reloc, /* special_function */
586 "R_ARM_LDR_SBREL_11_0",/* name */
587 FALSE, /* partial_inplace */
588 0x00000fff, /* src_mask */
589 0x00000fff, /* dst_mask */
590 FALSE), /* pcrel_offset */
591
592 HOWTO (R_ARM_ALU_SBREL_19_12, /* type */
593 0, /* rightshift */
594 2, /* size (0 = byte, 1 = short, 2 = long) */
595 8, /* bitsize */
596 FALSE, /* pc_relative */
597 12, /* bitpos */
598 complain_overflow_dont,/* complain_on_overflow */
599 bfd_elf_generic_reloc, /* special_function */
600 "R_ARM_ALU_SBREL_19_12",/* name */
601 FALSE, /* partial_inplace */
602 0x000ff000, /* src_mask */
603 0x000ff000, /* dst_mask */
604 FALSE), /* pcrel_offset */
605
606 HOWTO (R_ARM_ALU_SBREL_27_20, /* type */
607 0, /* rightshift */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
609 8, /* bitsize */
610 FALSE, /* pc_relative */
611 20, /* bitpos */
612 complain_overflow_dont,/* complain_on_overflow */
613 bfd_elf_generic_reloc, /* special_function */
614 "R_ARM_ALU_SBREL_27_20",/* name */
615 FALSE, /* partial_inplace */
616 0x0ff00000, /* src_mask */
617 0x0ff00000, /* dst_mask */
618 FALSE), /* pcrel_offset */
619
620 HOWTO (R_ARM_TARGET1, /* type */
621 0, /* rightshift */
622 2, /* size (0 = byte, 1 = short, 2 = long) */
623 32, /* bitsize */
624 FALSE, /* pc_relative */
625 0, /* bitpos */
626 complain_overflow_dont,/* complain_on_overflow */
627 bfd_elf_generic_reloc, /* special_function */
628 "R_ARM_TARGET1", /* name */
629 FALSE, /* partial_inplace */
630 0xffffffff, /* src_mask */
631 0xffffffff, /* dst_mask */
632 FALSE), /* pcrel_offset */
633
634 HOWTO (R_ARM_ROSEGREL32, /* type */
635 0, /* rightshift */
636 2, /* size (0 = byte, 1 = short, 2 = long) */
637 32, /* bitsize */
638 FALSE, /* pc_relative */
639 0, /* bitpos */
640 complain_overflow_dont,/* complain_on_overflow */
641 bfd_elf_generic_reloc, /* special_function */
642 "R_ARM_ROSEGREL32", /* name */
643 FALSE, /* partial_inplace */
644 0xffffffff, /* src_mask */
645 0xffffffff, /* dst_mask */
646 FALSE), /* pcrel_offset */
647
648 HOWTO (R_ARM_V4BX, /* type */
649 0, /* rightshift */
650 2, /* size (0 = byte, 1 = short, 2 = long) */
651 32, /* bitsize */
652 FALSE, /* pc_relative */
653 0, /* bitpos */
654 complain_overflow_dont,/* complain_on_overflow */
655 bfd_elf_generic_reloc, /* special_function */
656 "R_ARM_V4BX", /* name */
657 FALSE, /* partial_inplace */
658 0xffffffff, /* src_mask */
659 0xffffffff, /* dst_mask */
660 FALSE), /* pcrel_offset */
661
662 HOWTO (R_ARM_TARGET2, /* type */
663 0, /* rightshift */
664 2, /* size (0 = byte, 1 = short, 2 = long) */
665 32, /* bitsize */
666 FALSE, /* pc_relative */
667 0, /* bitpos */
668 complain_overflow_signed,/* complain_on_overflow */
669 bfd_elf_generic_reloc, /* special_function */
670 "R_ARM_TARGET2", /* name */
671 FALSE, /* partial_inplace */
672 0xffffffff, /* src_mask */
673 0xffffffff, /* dst_mask */
674 TRUE), /* pcrel_offset */
675
676 HOWTO (R_ARM_PREL31, /* type */
677 0, /* rightshift */
678 2, /* size (0 = byte, 1 = short, 2 = long) */
679 31, /* bitsize */
680 TRUE, /* pc_relative */
681 0, /* bitpos */
682 complain_overflow_signed,/* complain_on_overflow */
683 bfd_elf_generic_reloc, /* special_function */
684 "R_ARM_PREL31", /* name */
685 FALSE, /* partial_inplace */
686 0x7fffffff, /* src_mask */
687 0x7fffffff, /* dst_mask */
688 TRUE), /* pcrel_offset */
c19d1205
ZW		 689
690 HOWTO (R_ARM_MOVW_ABS_NC, /* type */
691 0, /* rightshift */
692 2, /* size (0 = byte, 1 = short, 2 = long) */
693 16, /* bitsize */
694 FALSE, /* pc_relative */
695 0, /* bitpos */
696 complain_overflow_dont,/* complain_on_overflow */
697 bfd_elf_generic_reloc, /* special_function */
698 "R_ARM_MOVW_ABS_NC", /* name */
699 FALSE, /* partial_inplace */
39623e12
PB		 700 0x000f0fff, /* src_mask */
701 0x000f0fff, /* dst_mask */
c19d1205
ZW		 702 FALSE), /* pcrel_offset */
703
704 HOWTO (R_ARM_MOVT_ABS, /* type */
705 0, /* rightshift */
706 2, /* size (0 = byte, 1 = short, 2 = long) */
707 16, /* bitsize */
708 FALSE, /* pc_relative */
709 0, /* bitpos */
710 complain_overflow_bitfield,/* complain_on_overflow */
711 bfd_elf_generic_reloc, /* special_function */
712 "R_ARM_MOVT_ABS", /* name */
713 FALSE, /* partial_inplace */
39623e12
PB		 714 0x000f0fff, /* src_mask */
715 0x000f0fff, /* dst_mask */
c19d1205
ZW		 716 FALSE), /* pcrel_offset */
717
718 HOWTO (R_ARM_MOVW_PREL_NC, /* type */
719 0, /* rightshift */
720 2, /* size (0 = byte, 1 = short, 2 = long) */
721 16, /* bitsize */
722 TRUE, /* pc_relative */
723 0, /* bitpos */
724 complain_overflow_dont,/* complain_on_overflow */
725 bfd_elf_generic_reloc, /* special_function */
726 "R_ARM_MOVW_PREL_NC", /* name */
727 FALSE, /* partial_inplace */
39623e12
PB		 728 0x000f0fff, /* src_mask */
729 0x000f0fff, /* dst_mask */
c19d1205
ZW		 730 TRUE), /* pcrel_offset */
731
732 HOWTO (R_ARM_MOVT_PREL, /* type */
733 0, /* rightshift */
734 2, /* size (0 = byte, 1 = short, 2 = long) */
735 16, /* bitsize */
736 TRUE, /* pc_relative */
737 0, /* bitpos */
738 complain_overflow_bitfield,/* complain_on_overflow */
739 bfd_elf_generic_reloc, /* special_function */
740 "R_ARM_MOVT_PREL", /* name */
741 FALSE, /* partial_inplace */
39623e12
PB		 742 0x000f0fff, /* src_mask */
743 0x000f0fff, /* dst_mask */
c19d1205
ZW		 744 TRUE), /* pcrel_offset */
745
746 HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */
747 0, /* rightshift */
748 2, /* size (0 = byte, 1 = short, 2 = long) */
749 16, /* bitsize */
750 FALSE, /* pc_relative */
751 0, /* bitpos */
752 complain_overflow_dont,/* complain_on_overflow */
753 bfd_elf_generic_reloc, /* special_function */
754 "R_ARM_THM_MOVW_ABS_NC",/* name */
755 FALSE, /* partial_inplace */
756 0x040f70ff, /* src_mask */
757 0x040f70ff, /* dst_mask */
758 FALSE), /* pcrel_offset */
759
760 HOWTO (R_ARM_THM_MOVT_ABS, /* type */
761 0, /* rightshift */
762 2, /* size (0 = byte, 1 = short, 2 = long) */
763 16, /* bitsize */
764 FALSE, /* pc_relative */
765 0, /* bitpos */
766 complain_overflow_bitfield,/* complain_on_overflow */
767 bfd_elf_generic_reloc, /* special_function */
768 "R_ARM_THM_MOVT_ABS", /* name */
769 FALSE, /* partial_inplace */
770 0x040f70ff, /* src_mask */
771 0x040f70ff, /* dst_mask */
772 FALSE), /* pcrel_offset */
773
774 HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */
775 0, /* rightshift */
776 2, /* size (0 = byte, 1 = short, 2 = long) */
777 16, /* bitsize */
778 TRUE, /* pc_relative */
779 0, /* bitpos */
780 complain_overflow_dont,/* complain_on_overflow */
781 bfd_elf_generic_reloc, /* special_function */
782 "R_ARM_THM_MOVW_PREL_NC",/* name */
783 FALSE, /* partial_inplace */
784 0x040f70ff, /* src_mask */
785 0x040f70ff, /* dst_mask */
786 TRUE), /* pcrel_offset */
787
788 HOWTO (R_ARM_THM_MOVT_PREL, /* type */
789 0, /* rightshift */
790 2, /* size (0 = byte, 1 = short, 2 = long) */
791 16, /* bitsize */
792 TRUE, /* pc_relative */
793 0, /* bitpos */
794 complain_overflow_bitfield,/* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_ARM_THM_MOVT_PREL", /* name */
797 FALSE, /* partial_inplace */
798 0x040f70ff, /* src_mask */
799 0x040f70ff, /* dst_mask */
800 TRUE), /* pcrel_offset */
801
802 HOWTO (R_ARM_THM_JUMP19, /* type */
803 1, /* rightshift */
804 2, /* size (0 = byte, 1 = short, 2 = long) */
805 19, /* bitsize */
806 TRUE, /* pc_relative */
807 0, /* bitpos */
808 complain_overflow_signed,/* complain_on_overflow */
809 bfd_elf_generic_reloc, /* special_function */
810 "R_ARM_THM_JUMP19", /* name */
811 FALSE, /* partial_inplace */
812 0x043f2fff, /* src_mask */
813 0x043f2fff, /* dst_mask */
814 TRUE), /* pcrel_offset */
815
816 HOWTO (R_ARM_THM_JUMP6, /* type */
817 1, /* rightshift */
818 1, /* size (0 = byte, 1 = short, 2 = long) */
819 6, /* bitsize */
820 TRUE, /* pc_relative */
821 0, /* bitpos */
822 complain_overflow_unsigned,/* complain_on_overflow */
823 bfd_elf_generic_reloc, /* special_function */
824 "R_ARM_THM_JUMP6", /* name */
825 FALSE, /* partial_inplace */
826 0x02f8, /* src_mask */
827 0x02f8, /* dst_mask */
828 TRUE), /* pcrel_offset */
829
830 /* These are declared as 13-bit signed relocations because we can
831 address -4095 .. 4095(base) by altering ADDW to SUBW or vice
832 versa. */
833 HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */
834 0, /* rightshift */
835 2, /* size (0 = byte, 1 = short, 2 = long) */
836 13, /* bitsize */
837 TRUE, /* pc_relative */
838 0, /* bitpos */
2cab6cc3 839 complain_overflow_dont,/* complain_on_overflow */
c19d1205
ZW		 840 bfd_elf_generic_reloc, /* special_function */
841 "R_ARM_THM_ALU_PREL_11_0",/* name */
842 FALSE, /* partial_inplace */
2cab6cc3
MS		 843 0xffffffff, /* src_mask */
844 0xffffffff, /* dst_mask */
c19d1205
ZW		 845 TRUE), /* pcrel_offset */
846
847 HOWTO (R_ARM_THM_PC12, /* type */
848 0, /* rightshift */
849 2, /* size (0 = byte, 1 = short, 2 = long) */
850 13, /* bitsize */
851 TRUE, /* pc_relative */
852 0, /* bitpos */
2cab6cc3 853 complain_overflow_dont,/* complain_on_overflow */
c19d1205
ZW		 854 bfd_elf_generic_reloc, /* special_function */
855 "R_ARM_THM_PC12", /* name */
856 FALSE, /* partial_inplace */
2cab6cc3
MS		 857 0xffffffff, /* src_mask */
858 0xffffffff, /* dst_mask */
c19d1205
ZW		 859 TRUE), /* pcrel_offset */
860
861 HOWTO (R_ARM_ABS32_NOI, /* type */
862 0, /* rightshift */
863 2, /* size (0 = byte, 1 = short, 2 = long) */
864 32, /* bitsize */
865 FALSE, /* pc_relative */
866 0, /* bitpos */
867 complain_overflow_dont,/* complain_on_overflow */
868 bfd_elf_generic_reloc, /* special_function */
869 "R_ARM_ABS32_NOI", /* name */
870 FALSE, /* partial_inplace */
871 0xffffffff, /* src_mask */
872 0xffffffff, /* dst_mask */
873 FALSE), /* pcrel_offset */
874
875 HOWTO (R_ARM_REL32_NOI, /* type */
876 0, /* rightshift */
877 2, /* size (0 = byte, 1 = short, 2 = long) */
878 32, /* bitsize */
879 TRUE, /* pc_relative */
880 0, /* bitpos */
881 complain_overflow_dont,/* complain_on_overflow */
882 bfd_elf_generic_reloc, /* special_function */
883 "R_ARM_REL32_NOI", /* name */
884 FALSE, /* partial_inplace */
885 0xffffffff, /* src_mask */
886 0xffffffff, /* dst_mask */
887 FALSE), /* pcrel_offset */
7f266840 888
4962c51a
MS		 889 /* Group relocations. */
890
891 HOWTO (R_ARM_ALU_PC_G0_NC, /* type */
892 0, /* rightshift */
893 2, /* size (0 = byte, 1 = short, 2 = long) */
894 32, /* bitsize */
895 TRUE, /* pc_relative */
896 0, /* bitpos */
897 complain_overflow_dont,/* complain_on_overflow */
898 bfd_elf_generic_reloc, /* special_function */
899 "R_ARM_ALU_PC_G0_NC", /* name */
900 FALSE, /* partial_inplace */
901 0xffffffff, /* src_mask */
902 0xffffffff, /* dst_mask */
903 TRUE), /* pcrel_offset */
904
905 HOWTO (R_ARM_ALU_PC_G0, /* type */
906 0, /* rightshift */
907 2, /* size (0 = byte, 1 = short, 2 = long) */
908 32, /* bitsize */
909 TRUE, /* pc_relative */
910 0, /* bitpos */
911 complain_overflow_dont,/* complain_on_overflow */
912 bfd_elf_generic_reloc, /* special_function */
913 "R_ARM_ALU_PC_G0", /* name */
914 FALSE, /* partial_inplace */
915 0xffffffff, /* src_mask */
916 0xffffffff, /* dst_mask */
917 TRUE), /* pcrel_offset */
918
919 HOWTO (R_ARM_ALU_PC_G1_NC, /* type */
920 0, /* rightshift */
921 2, /* size (0 = byte, 1 = short, 2 = long) */
922 32, /* bitsize */
923 TRUE, /* pc_relative */
924 0, /* bitpos */
925 complain_overflow_dont,/* complain_on_overflow */
926 bfd_elf_generic_reloc, /* special_function */
927 "R_ARM_ALU_PC_G1_NC", /* name */
928 FALSE, /* partial_inplace */
929 0xffffffff, /* src_mask */
930 0xffffffff, /* dst_mask */
931 TRUE), /* pcrel_offset */
932
933 HOWTO (R_ARM_ALU_PC_G1, /* type */
934 0, /* rightshift */
935 2, /* size (0 = byte, 1 = short, 2 = long) */
936 32, /* bitsize */
937 TRUE, /* pc_relative */
938 0, /* bitpos */
939 complain_overflow_dont,/* complain_on_overflow */
940 bfd_elf_generic_reloc, /* special_function */
941 "R_ARM_ALU_PC_G1", /* name */
942 FALSE, /* partial_inplace */
943 0xffffffff, /* src_mask */
944 0xffffffff, /* dst_mask */
945 TRUE), /* pcrel_offset */
946
947 HOWTO (R_ARM_ALU_PC_G2, /* type */
948 0, /* rightshift */
949 2, /* size (0 = byte, 1 = short, 2 = long) */
950 32, /* bitsize */
951 TRUE, /* pc_relative */
952 0, /* bitpos */
953 complain_overflow_dont,/* complain_on_overflow */
954 bfd_elf_generic_reloc, /* special_function */
955 "R_ARM_ALU_PC_G2", /* name */
956 FALSE, /* partial_inplace */
957 0xffffffff, /* src_mask */
958 0xffffffff, /* dst_mask */
959 TRUE), /* pcrel_offset */
960
961 HOWTO (R_ARM_LDR_PC_G1, /* type */
962 0, /* rightshift */
963 2, /* size (0 = byte, 1 = short, 2 = long) */
964 32, /* bitsize */
965 TRUE, /* pc_relative */
966 0, /* bitpos */
967 complain_overflow_dont,/* complain_on_overflow */
968 bfd_elf_generic_reloc, /* special_function */
969 "R_ARM_LDR_PC_G1", /* name */
970 FALSE, /* partial_inplace */
971 0xffffffff, /* src_mask */
972 0xffffffff, /* dst_mask */
973 TRUE), /* pcrel_offset */
974
975 HOWTO (R_ARM_LDR_PC_G2, /* type */
976 0, /* rightshift */
977 2, /* size (0 = byte, 1 = short, 2 = long) */
978 32, /* bitsize */
979 TRUE, /* pc_relative */
980 0, /* bitpos */
981 complain_overflow_dont,/* complain_on_overflow */
982 bfd_elf_generic_reloc, /* special_function */
983 "R_ARM_LDR_PC_G2", /* name */
984 FALSE, /* partial_inplace */
985 0xffffffff, /* src_mask */
986 0xffffffff, /* dst_mask */
987 TRUE), /* pcrel_offset */
988
989 HOWTO (R_ARM_LDRS_PC_G0, /* type */
990 0, /* rightshift */
991 2, /* size (0 = byte, 1 = short, 2 = long) */
992 32, /* bitsize */
993 TRUE, /* pc_relative */
994 0, /* bitpos */
995 complain_overflow_dont,/* complain_on_overflow */
996 bfd_elf_generic_reloc, /* special_function */
997 "R_ARM_LDRS_PC_G0", /* name */
998 FALSE, /* partial_inplace */
999 0xffffffff, /* src_mask */
1000 0xffffffff, /* dst_mask */
1001 TRUE), /* pcrel_offset */
1002
1003 HOWTO (R_ARM_LDRS_PC_G1, /* type */
1004 0, /* rightshift */
1005 2, /* size (0 = byte, 1 = short, 2 = long) */
1006 32, /* bitsize */
1007 TRUE, /* pc_relative */
1008 0, /* bitpos */
1009 complain_overflow_dont,/* complain_on_overflow */
1010 bfd_elf_generic_reloc, /* special_function */
1011 "R_ARM_LDRS_PC_G1", /* name */
1012 FALSE, /* partial_inplace */
1013 0xffffffff, /* src_mask */
1014 0xffffffff, /* dst_mask */
1015 TRUE), /* pcrel_offset */
1016
1017 HOWTO (R_ARM_LDRS_PC_G2, /* type */
1018 0, /* rightshift */
1019 2, /* size (0 = byte, 1 = short, 2 = long) */
1020 32, /* bitsize */
1021 TRUE, /* pc_relative */
1022 0, /* bitpos */
1023 complain_overflow_dont,/* complain_on_overflow */
1024 bfd_elf_generic_reloc, /* special_function */
1025 "R_ARM_LDRS_PC_G2", /* name */
1026 FALSE, /* partial_inplace */
1027 0xffffffff, /* src_mask */
1028 0xffffffff, /* dst_mask */
1029 TRUE), /* pcrel_offset */
1030
1031 HOWTO (R_ARM_LDC_PC_G0, /* type */
1032 0, /* rightshift */
1033 2, /* size (0 = byte, 1 = short, 2 = long) */
1034 32, /* bitsize */
1035 TRUE, /* pc_relative */
1036 0, /* bitpos */
1037 complain_overflow_dont,/* complain_on_overflow */
1038 bfd_elf_generic_reloc, /* special_function */
1039 "R_ARM_LDC_PC_G0", /* name */
1040 FALSE, /* partial_inplace */
1041 0xffffffff, /* src_mask */
1042 0xffffffff, /* dst_mask */
1043 TRUE), /* pcrel_offset */
1044
1045 HOWTO (R_ARM_LDC_PC_G1, /* type */
1046 0, /* rightshift */
1047 2, /* size (0 = byte, 1 = short, 2 = long) */
1048 32, /* bitsize */
1049 TRUE, /* pc_relative */
1050 0, /* bitpos */
1051 complain_overflow_dont,/* complain_on_overflow */
1052 bfd_elf_generic_reloc, /* special_function */
1053 "R_ARM_LDC_PC_G1", /* name */
1054 FALSE, /* partial_inplace */
1055 0xffffffff, /* src_mask */
1056 0xffffffff, /* dst_mask */
1057 TRUE), /* pcrel_offset */
1058
1059 HOWTO (R_ARM_LDC_PC_G2, /* type */
1060 0, /* rightshift */
1061 2, /* size (0 = byte, 1 = short, 2 = long) */
1062 32, /* bitsize */
1063 TRUE, /* pc_relative */
1064 0, /* bitpos */
1065 complain_overflow_dont,/* complain_on_overflow */
1066 bfd_elf_generic_reloc, /* special_function */
1067 "R_ARM_LDC_PC_G2", /* name */
1068 FALSE, /* partial_inplace */
1069 0xffffffff, /* src_mask */
1070 0xffffffff, /* dst_mask */
1071 TRUE), /* pcrel_offset */
1072
1073 HOWTO (R_ARM_ALU_SB_G0_NC, /* type */
1074 0, /* rightshift */
1075 2, /* size (0 = byte, 1 = short, 2 = long) */
1076 32, /* bitsize */
1077 TRUE, /* pc_relative */
1078 0, /* bitpos */
1079 complain_overflow_dont,/* complain_on_overflow */
1080 bfd_elf_generic_reloc, /* special_function */
1081 "R_ARM_ALU_SB_G0_NC", /* name */
1082 FALSE, /* partial_inplace */
1083 0xffffffff, /* src_mask */
1084 0xffffffff, /* dst_mask */
1085 TRUE), /* pcrel_offset */
1086
1087 HOWTO (R_ARM_ALU_SB_G0, /* type */
1088 0, /* rightshift */
1089 2, /* size (0 = byte, 1 = short, 2 = long) */
1090 32, /* bitsize */
1091 TRUE, /* pc_relative */
1092 0, /* bitpos */
1093 complain_overflow_dont,/* complain_on_overflow */
1094 bfd_elf_generic_reloc, /* special_function */
1095 "R_ARM_ALU_SB_G0", /* name */
1096 FALSE, /* partial_inplace */
1097 0xffffffff, /* src_mask */
1098 0xffffffff, /* dst_mask */
1099 TRUE), /* pcrel_offset */
1100
1101 HOWTO (R_ARM_ALU_SB_G1_NC, /* type */
1102 0, /* rightshift */
1103 2, /* size (0 = byte, 1 = short, 2 = long) */
1104 32, /* bitsize */
1105 TRUE, /* pc_relative */
1106 0, /* bitpos */
1107 complain_overflow_dont,/* complain_on_overflow */
1108 bfd_elf_generic_reloc, /* special_function */
1109 "R_ARM_ALU_SB_G1_NC", /* name */
1110 FALSE, /* partial_inplace */
1111 0xffffffff, /* src_mask */
1112 0xffffffff, /* dst_mask */
1113 TRUE), /* pcrel_offset */
1114
1115 HOWTO (R_ARM_ALU_SB_G1, /* type */
1116 0, /* rightshift */
1117 2, /* size (0 = byte, 1 = short, 2 = long) */
1118 32, /* bitsize */
1119 TRUE, /* pc_relative */
1120 0, /* bitpos */
1121 complain_overflow_dont,/* complain_on_overflow */
1122 bfd_elf_generic_reloc, /* special_function */
1123 "R_ARM_ALU_SB_G1", /* name */
1124 FALSE, /* partial_inplace */
1125 0xffffffff, /* src_mask */
1126 0xffffffff, /* dst_mask */
1127 TRUE), /* pcrel_offset */
1128
1129 HOWTO (R_ARM_ALU_SB_G2, /* type */
1130 0, /* rightshift */
1131 2, /* size (0 = byte, 1 = short, 2 = long) */
1132 32, /* bitsize */
1133 TRUE, /* pc_relative */
1134 0, /* bitpos */
1135 complain_overflow_dont,/* complain_on_overflow */
1136 bfd_elf_generic_reloc, /* special_function */
1137 "R_ARM_ALU_SB_G2", /* name */
1138 FALSE, /* partial_inplace */
1139 0xffffffff, /* src_mask */
1140 0xffffffff, /* dst_mask */
1141 TRUE), /* pcrel_offset */
1142
1143 HOWTO (R_ARM_LDR_SB_G0, /* type */
1144 0, /* rightshift */
1145 2, /* size (0 = byte, 1 = short, 2 = long) */
1146 32, /* bitsize */
1147 TRUE, /* pc_relative */
1148 0, /* bitpos */
1149 complain_overflow_dont,/* complain_on_overflow */
1150 bfd_elf_generic_reloc, /* special_function */
1151 "R_ARM_LDR_SB_G0", /* name */
1152 FALSE, /* partial_inplace */
1153 0xffffffff, /* src_mask */
1154 0xffffffff, /* dst_mask */
1155 TRUE), /* pcrel_offset */
1156
1157 HOWTO (R_ARM_LDR_SB_G1, /* type */
1158 0, /* rightshift */
1159 2, /* size (0 = byte, 1 = short, 2 = long) */
1160 32, /* bitsize */
1161 TRUE, /* pc_relative */
1162 0, /* bitpos */
1163 complain_overflow_dont,/* complain_on_overflow */
1164 bfd_elf_generic_reloc, /* special_function */
1165 "R_ARM_LDR_SB_G1", /* name */
1166 FALSE, /* partial_inplace */
1167 0xffffffff, /* src_mask */
1168 0xffffffff, /* dst_mask */
1169 TRUE), /* pcrel_offset */
1170
1171 HOWTO (R_ARM_LDR_SB_G2, /* type */
1172 0, /* rightshift */
1173 2, /* size (0 = byte, 1 = short, 2 = long) */
1174 32, /* bitsize */
1175 TRUE, /* pc_relative */
1176 0, /* bitpos */
1177 complain_overflow_dont,/* complain_on_overflow */
1178 bfd_elf_generic_reloc, /* special_function */
1179 "R_ARM_LDR_SB_G2", /* name */
1180 FALSE, /* partial_inplace */
1181 0xffffffff, /* src_mask */
1182 0xffffffff, /* dst_mask */
1183 TRUE), /* pcrel_offset */
1184
1185 HOWTO (R_ARM_LDRS_SB_G0, /* type */
1186 0, /* rightshift */
1187 2, /* size (0 = byte, 1 = short, 2 = long) */
1188 32, /* bitsize */
1189 TRUE, /* pc_relative */
1190 0, /* bitpos */
1191 complain_overflow_dont,/* complain_on_overflow */
1192 bfd_elf_generic_reloc, /* special_function */
1193 "R_ARM_LDRS_SB_G0", /* name */
1194 FALSE, /* partial_inplace */
1195 0xffffffff, /* src_mask */
1196 0xffffffff, /* dst_mask */
1197 TRUE), /* pcrel_offset */
1198
1199 HOWTO (R_ARM_LDRS_SB_G1, /* type */
1200 0, /* rightshift */
1201 2, /* size (0 = byte, 1 = short, 2 = long) */
1202 32, /* bitsize */
1203 TRUE, /* pc_relative */
1204 0, /* bitpos */
1205 complain_overflow_dont,/* complain_on_overflow */
1206 bfd_elf_generic_reloc, /* special_function */
1207 "R_ARM_LDRS_SB_G1", /* name */
1208 FALSE, /* partial_inplace */
1209 0xffffffff, /* src_mask */
1210 0xffffffff, /* dst_mask */
1211 TRUE), /* pcrel_offset */
1212
1213 HOWTO (R_ARM_LDRS_SB_G2, /* type */
1214 0, /* rightshift */
1215 2, /* size (0 = byte, 1 = short, 2 = long) */
1216 32, /* bitsize */
1217 TRUE, /* pc_relative */
1218 0, /* bitpos */
1219 complain_overflow_dont,/* complain_on_overflow */
1220 bfd_elf_generic_reloc, /* special_function */
1221 "R_ARM_LDRS_SB_G2", /* name */
1222 FALSE, /* partial_inplace */
1223 0xffffffff, /* src_mask */
1224 0xffffffff, /* dst_mask */
1225 TRUE), /* pcrel_offset */
1226
1227 HOWTO (R_ARM_LDC_SB_G0, /* type */
1228 0, /* rightshift */
1229 2, /* size (0 = byte, 1 = short, 2 = long) */
1230 32, /* bitsize */
1231 TRUE, /* pc_relative */
1232 0, /* bitpos */
1233 complain_overflow_dont,/* complain_on_overflow */
1234 bfd_elf_generic_reloc, /* special_function */
1235 "R_ARM_LDC_SB_G0", /* name */
1236 FALSE, /* partial_inplace */
1237 0xffffffff, /* src_mask */
1238 0xffffffff, /* dst_mask */
1239 TRUE), /* pcrel_offset */
1240
1241 HOWTO (R_ARM_LDC_SB_G1, /* type */
1242 0, /* rightshift */
1243 2, /* size (0 = byte, 1 = short, 2 = long) */
1244 32, /* bitsize */
1245 TRUE, /* pc_relative */
1246 0, /* bitpos */
1247 complain_overflow_dont,/* complain_on_overflow */
1248 bfd_elf_generic_reloc, /* special_function */
1249 "R_ARM_LDC_SB_G1", /* name */
1250 FALSE, /* partial_inplace */
1251 0xffffffff, /* src_mask */
1252 0xffffffff, /* dst_mask */
1253 TRUE), /* pcrel_offset */
1254
1255 HOWTO (R_ARM_LDC_SB_G2, /* type */
1256 0, /* rightshift */
1257 2, /* size (0 = byte, 1 = short, 2 = long) */
1258 32, /* bitsize */
1259 TRUE, /* pc_relative */
1260 0, /* bitpos */
1261 complain_overflow_dont,/* complain_on_overflow */
1262 bfd_elf_generic_reloc, /* special_function */
1263 "R_ARM_LDC_SB_G2", /* name */
1264 FALSE, /* partial_inplace */
1265 0xffffffff, /* src_mask */
1266 0xffffffff, /* dst_mask */
1267 TRUE), /* pcrel_offset */
1268
1269 /* End of group relocations. */
c19d1205 1270
c19d1205
ZW		 1271 HOWTO (R_ARM_MOVW_BREL_NC, /* type */
1272 0, /* rightshift */
1273 2, /* size (0 = byte, 1 = short, 2 = long) */
1274 16, /* bitsize */
1275 FALSE, /* pc_relative */
1276 0, /* bitpos */
1277 complain_overflow_dont,/* complain_on_overflow */
1278 bfd_elf_generic_reloc, /* special_function */
1279 "R_ARM_MOVW_BREL_NC", /* name */
1280 FALSE, /* partial_inplace */
1281 0x0000ffff, /* src_mask */
1282 0x0000ffff, /* dst_mask */
1283 FALSE), /* pcrel_offset */
1284
1285 HOWTO (R_ARM_MOVT_BREL, /* type */
1286 0, /* rightshift */
1287 2, /* size (0 = byte, 1 = short, 2 = long) */
1288 16, /* bitsize */
1289 FALSE, /* pc_relative */
1290 0, /* bitpos */
1291 complain_overflow_bitfield,/* complain_on_overflow */
1292 bfd_elf_generic_reloc, /* special_function */
1293 "R_ARM_MOVT_BREL", /* name */
1294 FALSE, /* partial_inplace */
1295 0x0000ffff, /* src_mask */
1296 0x0000ffff, /* dst_mask */
1297 FALSE), /* pcrel_offset */
1298
1299 HOWTO (R_ARM_MOVW_BREL, /* type */
1300 0, /* rightshift */
1301 2, /* size (0 = byte, 1 = short, 2 = long) */
1302 16, /* bitsize */
1303 FALSE, /* pc_relative */
1304 0, /* bitpos */
1305 complain_overflow_dont,/* complain_on_overflow */
1306 bfd_elf_generic_reloc, /* special_function */
1307 "R_ARM_MOVW_BREL", /* name */
1308 FALSE, /* partial_inplace */
1309 0x0000ffff, /* src_mask */
1310 0x0000ffff, /* dst_mask */
1311 FALSE), /* pcrel_offset */
1312
1313 HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */
1314 0, /* rightshift */
1315 2, /* size (0 = byte, 1 = short, 2 = long) */
1316 16, /* bitsize */
1317 FALSE, /* pc_relative */
1318 0, /* bitpos */
1319 complain_overflow_dont,/* complain_on_overflow */
1320 bfd_elf_generic_reloc, /* special_function */
1321 "R_ARM_THM_MOVW_BREL_NC",/* name */
1322 FALSE, /* partial_inplace */
1323 0x040f70ff, /* src_mask */
1324 0x040f70ff, /* dst_mask */
1325 FALSE), /* pcrel_offset */
1326
1327 HOWTO (R_ARM_THM_MOVT_BREL, /* type */
1328 0, /* rightshift */
1329 2, /* size (0 = byte, 1 = short, 2 = long) */
1330 16, /* bitsize */
1331 FALSE, /* pc_relative */
1332 0, /* bitpos */
1333 complain_overflow_bitfield,/* complain_on_overflow */
1334 bfd_elf_generic_reloc, /* special_function */
1335 "R_ARM_THM_MOVT_BREL", /* name */
1336 FALSE, /* partial_inplace */
1337 0x040f70ff, /* src_mask */
1338 0x040f70ff, /* dst_mask */
1339 FALSE), /* pcrel_offset */
1340
1341 HOWTO (R_ARM_THM_MOVW_BREL, /* type */
1342 0, /* rightshift */
1343 2, /* size (0 = byte, 1 = short, 2 = long) */
1344 16, /* bitsize */
1345 FALSE, /* pc_relative */
1346 0, /* bitpos */
1347 complain_overflow_dont,/* complain_on_overflow */
1348 bfd_elf_generic_reloc, /* special_function */
1349 "R_ARM_THM_MOVW_BREL", /* name */
1350 FALSE, /* partial_inplace */
1351 0x040f70ff, /* src_mask */
1352 0x040f70ff, /* dst_mask */
1353 FALSE), /* pcrel_offset */
1354
8029a119 1355 EMPTY_HOWTO (90), /* Unallocated. */
c19d1205
ZW		 1356 EMPTY_HOWTO (91),
1357 EMPTY_HOWTO (92),
1358 EMPTY_HOWTO (93),
1359
1360 HOWTO (R_ARM_PLT32_ABS, /* type */
1361 0, /* rightshift */
1362 2, /* size (0 = byte, 1 = short, 2 = long) */
1363 32, /* bitsize */
1364 FALSE, /* pc_relative */
1365 0, /* bitpos */
1366 complain_overflow_dont,/* complain_on_overflow */
1367 bfd_elf_generic_reloc, /* special_function */
1368 "R_ARM_PLT32_ABS", /* name */
1369 FALSE, /* partial_inplace */
1370 0xffffffff, /* src_mask */
1371 0xffffffff, /* dst_mask */
1372 FALSE), /* pcrel_offset */
1373
1374 HOWTO (R_ARM_GOT_ABS, /* type */
1375 0, /* rightshift */
1376 2, /* size (0 = byte, 1 = short, 2 = long) */
1377 32, /* bitsize */
1378 FALSE, /* pc_relative */
1379 0, /* bitpos */
1380 complain_overflow_dont,/* complain_on_overflow */
1381 bfd_elf_generic_reloc, /* special_function */
1382 "R_ARM_GOT_ABS", /* name */
1383 FALSE, /* partial_inplace */
1384 0xffffffff, /* src_mask */
1385 0xffffffff, /* dst_mask */
1386 FALSE), /* pcrel_offset */
1387
1388 HOWTO (R_ARM_GOT_PREL, /* type */
1389 0, /* rightshift */
1390 2, /* size (0 = byte, 1 = short, 2 = long) */
1391 32, /* bitsize */
1392 TRUE, /* pc_relative */
1393 0, /* bitpos */
1394 complain_overflow_dont, /* complain_on_overflow */
1395 bfd_elf_generic_reloc, /* special_function */
1396 "R_ARM_GOT_PREL", /* name */
1397 FALSE, /* partial_inplace */
1398 0xffffffff, /* src_mask */
1399 0xffffffff, /* dst_mask */
1400 TRUE), /* pcrel_offset */
1401
1402 HOWTO (R_ARM_GOT_BREL12, /* type */
1403 0, /* rightshift */
1404 2, /* size (0 = byte, 1 = short, 2 = long) */
1405 12, /* bitsize */
1406 FALSE, /* pc_relative */
1407 0, /* bitpos */
1408 complain_overflow_bitfield,/* complain_on_overflow */
1409 bfd_elf_generic_reloc, /* special_function */
1410 "R_ARM_GOT_BREL12", /* name */
1411 FALSE, /* partial_inplace */
1412 0x00000fff, /* src_mask */
1413 0x00000fff, /* dst_mask */
1414 FALSE), /* pcrel_offset */
1415
1416 HOWTO (R_ARM_GOTOFF12, /* type */
1417 0, /* rightshift */
1418 2, /* size (0 = byte, 1 = short, 2 = long) */
1419 12, /* bitsize */
1420 FALSE, /* pc_relative */
1421 0, /* bitpos */
1422 complain_overflow_bitfield,/* complain_on_overflow */
1423 bfd_elf_generic_reloc, /* special_function */
1424 "R_ARM_GOTOFF12", /* name */
1425 FALSE, /* partial_inplace */
1426 0x00000fff, /* src_mask */
1427 0x00000fff, /* dst_mask */
1428 FALSE), /* pcrel_offset */
1429
1430 EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */
1431
1432 /* GNU extension to record C++ vtable member usage */
1433 HOWTO (R_ARM_GNU_VTENTRY, /* type */
ba93b8ac
DJ		 1434 0, /* rightshift */
1435 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205 1436 0, /* bitsize */
ba93b8ac
DJ		 1437 FALSE, /* pc_relative */
1438 0, /* bitpos */
c19d1205
ZW		 1439 complain_overflow_dont, /* complain_on_overflow */
1440 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1441 "R_ARM_GNU_VTENTRY", /* name */
1442 FALSE, /* partial_inplace */
1443 0, /* src_mask */
1444 0, /* dst_mask */
1445 FALSE), /* pcrel_offset */
1446
1447 /* GNU extension to record C++ vtable hierarchy */
1448 HOWTO (R_ARM_GNU_VTINHERIT, /* type */
1449 0, /* rightshift */
1450 2, /* size (0 = byte, 1 = short, 2 = long) */
1451 0, /* bitsize */
1452 FALSE, /* pc_relative */
1453 0, /* bitpos */
1454 complain_overflow_dont, /* complain_on_overflow */
1455 NULL, /* special_function */
1456 "R_ARM_GNU_VTINHERIT", /* name */
1457 FALSE, /* partial_inplace */
1458 0, /* src_mask */
1459 0, /* dst_mask */
1460 FALSE), /* pcrel_offset */
1461
1462 HOWTO (R_ARM_THM_JUMP11, /* type */
1463 1, /* rightshift */
1464 1, /* size (0 = byte, 1 = short, 2 = long) */
1465 11, /* bitsize */
1466 TRUE, /* pc_relative */
1467 0, /* bitpos */
1468 complain_overflow_signed, /* complain_on_overflow */
1469 bfd_elf_generic_reloc, /* special_function */
1470 "R_ARM_THM_JUMP11", /* name */
1471 FALSE, /* partial_inplace */
1472 0x000007ff, /* src_mask */
1473 0x000007ff, /* dst_mask */
1474 TRUE), /* pcrel_offset */
1475
1476 HOWTO (R_ARM_THM_JUMP8, /* type */
1477 1, /* rightshift */
1478 1, /* size (0 = byte, 1 = short, 2 = long) */
1479 8, /* bitsize */
1480 TRUE, /* pc_relative */
1481 0, /* bitpos */
1482 complain_overflow_signed, /* complain_on_overflow */
1483 bfd_elf_generic_reloc, /* special_function */
1484 "R_ARM_THM_JUMP8", /* name */
1485 FALSE, /* partial_inplace */
1486 0x000000ff, /* src_mask */
1487 0x000000ff, /* dst_mask */
1488 TRUE), /* pcrel_offset */
ba93b8ac 1489
c19d1205
ZW		 1490 /* TLS relocations */
1491 HOWTO (R_ARM_TLS_GD32, /* type */
ba93b8ac
DJ		 1492 0, /* rightshift */
1493 2, /* size (0 = byte, 1 = short, 2 = long) */
1494 32, /* bitsize */
1495 FALSE, /* pc_relative */
1496 0, /* bitpos */
1497 complain_overflow_bitfield,/* complain_on_overflow */
c19d1205
ZW		 1498 NULL, /* special_function */
1499 "R_ARM_TLS_GD32", /* name */
ba93b8ac
DJ		 1500 TRUE, /* partial_inplace */
1501 0xffffffff, /* src_mask */
1502 0xffffffff, /* dst_mask */
c19d1205 1503 FALSE), /* pcrel_offset */
ba93b8ac 1504
ba93b8ac
DJ		 1505 HOWTO (R_ARM_TLS_LDM32, /* type */
1506 0, /* rightshift */
1507 2, /* size (0 = byte, 1 = short, 2 = long) */
1508 32, /* bitsize */
1509 FALSE, /* pc_relative */
1510 0, /* bitpos */
1511 complain_overflow_bitfield,/* complain_on_overflow */
1512 bfd_elf_generic_reloc, /* special_function */
1513 "R_ARM_TLS_LDM32", /* name */
1514 TRUE, /* partial_inplace */
1515 0xffffffff, /* src_mask */
1516 0xffffffff, /* dst_mask */
c19d1205 1517 FALSE), /* pcrel_offset */
ba93b8ac 1518
c19d1205 1519 HOWTO (R_ARM_TLS_LDO32, /* type */
ba93b8ac
DJ		 1520 0, /* rightshift */
1521 2, /* size (0 = byte, 1 = short, 2 = long) */
1522 32, /* bitsize */
1523 FALSE, /* pc_relative */
1524 0, /* bitpos */
1525 complain_overflow_bitfield,/* complain_on_overflow */
1526 bfd_elf_generic_reloc, /* special_function */
c19d1205 1527 "R_ARM_TLS_LDO32", /* name */
ba93b8ac
DJ		 1528 TRUE, /* partial_inplace */
1529 0xffffffff, /* src_mask */
1530 0xffffffff, /* dst_mask */
c19d1205 1531 FALSE), /* pcrel_offset */
ba93b8ac 1532
ba93b8ac
DJ		 1533 HOWTO (R_ARM_TLS_IE32, /* type */
1534 0, /* rightshift */
1535 2, /* size (0 = byte, 1 = short, 2 = long) */
1536 32, /* bitsize */
1537 FALSE, /* pc_relative */
1538 0, /* bitpos */
1539 complain_overflow_bitfield,/* complain_on_overflow */
1540 NULL, /* special_function */
1541 "R_ARM_TLS_IE32", /* name */
1542 TRUE, /* partial_inplace */
1543 0xffffffff, /* src_mask */
1544 0xffffffff, /* dst_mask */
c19d1205 1545 FALSE), /* pcrel_offset */
7f266840 1546
c19d1205 1547 HOWTO (R_ARM_TLS_LE32, /* type */
7f266840
DJ		 1548 0, /* rightshift */
1549 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205 1550 32, /* bitsize */
7f266840
DJ		 1551 FALSE, /* pc_relative */
1552 0, /* bitpos */
c19d1205
ZW		 1553 complain_overflow_bitfield,/* complain_on_overflow */
1554 bfd_elf_generic_reloc, /* special_function */
1555 "R_ARM_TLS_LE32", /* name */
1556 TRUE, /* partial_inplace */
1557 0xffffffff, /* src_mask */
1558 0xffffffff, /* dst_mask */
1559 FALSE), /* pcrel_offset */
7f266840 1560
c19d1205
ZW		 1561 HOWTO (R_ARM_TLS_LDO12, /* type */
1562 0, /* rightshift */
1563 2, /* size (0 = byte, 1 = short, 2 = long) */
1564 12, /* bitsize */
1565 FALSE, /* pc_relative */
7f266840 1566 0, /* bitpos */
c19d1205 1567 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1568 bfd_elf_generic_reloc, /* special_function */
c19d1205 1569 "R_ARM_TLS_LDO12", /* name */
7f266840 1570 FALSE, /* partial_inplace */
c19d1205
ZW		 1571 0x00000fff, /* src_mask */
1572 0x00000fff, /* dst_mask */
1573 FALSE), /* pcrel_offset */
7f266840 1574
c19d1205
ZW		 1575 HOWTO (R_ARM_TLS_LE12, /* type */
1576 0, /* rightshift */
1577 2, /* size (0 = byte, 1 = short, 2 = long) */
1578 12, /* bitsize */
1579 FALSE, /* pc_relative */
7f266840 1580 0, /* bitpos */
c19d1205 1581 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1582 bfd_elf_generic_reloc, /* special_function */
c19d1205 1583 "R_ARM_TLS_LE12", /* name */
7f266840 1584 FALSE, /* partial_inplace */
c19d1205
ZW		 1585 0x00000fff, /* src_mask */
1586 0x00000fff, /* dst_mask */
1587 FALSE), /* pcrel_offset */
7f266840 1588
c19d1205 1589 HOWTO (R_ARM_TLS_IE12GP, /* type */
7f266840
DJ		 1590 0, /* rightshift */
1591 2, /* size (0 = byte, 1 = short, 2 = long) */
c19d1205
ZW		 1592 12, /* bitsize */
1593 FALSE, /* pc_relative */
7f266840 1594 0, /* bitpos */
c19d1205 1595 complain_overflow_bitfield,/* complain_on_overflow */
7f266840 1596 bfd_elf_generic_reloc, /* special_function */
c19d1205 1597 "R_ARM_TLS_IE12GP", /* name */
7f266840 1598 FALSE, /* partial_inplace */
c19d1205
ZW		 1599 0x00000fff, /* src_mask */
1600 0x00000fff, /* dst_mask */
1601 FALSE), /* pcrel_offset */
1602};
1603
1604/* 112-127 private relocations
1605 128 R_ARM_ME_TOO, obsolete
1606 129-255 unallocated in AAELF.
7f266840 1607
c19d1205
ZW		 1608 249-255 extended, currently unused, relocations: */
1609
4962c51a 1610static reloc_howto_type elf32_arm_howto_table_2[4] =
7f266840
DJ		 1611{
1612 HOWTO (R_ARM_RREL32, /* type */
1613 0, /* rightshift */
1614 0, /* size (0 = byte, 1 = short, 2 = long) */
1615 0, /* bitsize */
1616 FALSE, /* pc_relative */
1617 0, /* bitpos */
1618 complain_overflow_dont,/* complain_on_overflow */
1619 bfd_elf_generic_reloc, /* special_function */
1620 "R_ARM_RREL32", /* name */
1621 FALSE, /* partial_inplace */
1622 0, /* src_mask */
1623 0, /* dst_mask */
1624 FALSE), /* pcrel_offset */
1625
1626 HOWTO (R_ARM_RABS32, /* type */
1627 0, /* rightshift */
1628 0, /* size (0 = byte, 1 = short, 2 = long) */
1629 0, /* bitsize */
1630 FALSE, /* pc_relative */
1631 0, /* bitpos */
1632 complain_overflow_dont,/* complain_on_overflow */
1633 bfd_elf_generic_reloc, /* special_function */
1634 "R_ARM_RABS32", /* name */
1635 FALSE, /* partial_inplace */
1636 0, /* src_mask */
1637 0, /* dst_mask */
1638 FALSE), /* pcrel_offset */
1639
1640 HOWTO (R_ARM_RPC24, /* type */
1641 0, /* rightshift */
1642 0, /* size (0 = byte, 1 = short, 2 = long) */
1643 0, /* bitsize */
1644 FALSE, /* pc_relative */
1645 0, /* bitpos */
1646 complain_overflow_dont,/* complain_on_overflow */
1647 bfd_elf_generic_reloc, /* special_function */
1648 "R_ARM_RPC24", /* name */
1649 FALSE, /* partial_inplace */
1650 0, /* src_mask */
1651 0, /* dst_mask */
1652 FALSE), /* pcrel_offset */
1653
1654 HOWTO (R_ARM_RBASE, /* type */
1655 0, /* rightshift */
1656 0, /* size (0 = byte, 1 = short, 2 = long) */
1657 0, /* bitsize */
1658 FALSE, /* pc_relative */
1659 0, /* bitpos */
1660 complain_overflow_dont,/* complain_on_overflow */
1661 bfd_elf_generic_reloc, /* special_function */
1662 "R_ARM_RBASE", /* name */
1663 FALSE, /* partial_inplace */
1664 0, /* src_mask */
1665 0, /* dst_mask */
1666 FALSE) /* pcrel_offset */
1667};
1668
1669static reloc_howto_type *
1670elf32_arm_howto_from_type (unsigned int r_type)
1671{
906e58ca 1672 if (r_type < ARRAY_SIZE (elf32_arm_howto_table_1))
c19d1205 1673 return &elf32_arm_howto_table_1[r_type];
ba93b8ac 1674
c19d1205 1675 if (r_type >= R_ARM_RREL32
906e58ca 1676 && r_type < R_ARM_RREL32 + ARRAY_SIZE (elf32_arm_howto_table_2))
4962c51a 1677 return &elf32_arm_howto_table_2[r_type - R_ARM_RREL32];
7f266840 1678
c19d1205 1679 return NULL;
7f266840
DJ		 1680}
1681
1682static void
1683elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
1684 Elf_Internal_Rela * elf_reloc)
1685{
1686 unsigned int r_type;
1687
1688 r_type = ELF32_R_TYPE (elf_reloc->r_info);
1689 bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
1690}
1691
1692struct elf32_arm_reloc_map
1693 {
1694 bfd_reloc_code_real_type bfd_reloc_val;
1695 unsigned char elf_reloc_val;
1696 };
1697
1698/* All entries in this list must also be present in elf32_arm_howto_table. */
1699static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
1700 {
1701 {BFD_RELOC_NONE, R_ARM_NONE},
1702 {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
39b41c9c
PB		 1703 {BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL},
1704 {BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24},
7f266840
DJ		 1705 {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
1706 {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
1707 {BFD_RELOC_32, R_ARM_ABS32},
1708 {BFD_RELOC_32_PCREL, R_ARM_REL32},
1709 {BFD_RELOC_8, R_ARM_ABS8},
1710 {BFD_RELOC_16, R_ARM_ABS16},
1711 {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
1712 {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
c19d1205
ZW		 1713 {BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24},
1714 {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL},
1715 {BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11},
1716 {BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19},
1717 {BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8},
1718 {BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6},
7f266840
DJ		 1719 {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
1720 {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
1721 {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
c19d1205 1722 {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32},
7f266840
DJ		 1723 {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
1724 {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
1725 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1726 {BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1},
1727 {BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32},
1728 {BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32},
1729 {BFD_RELOC_ARM_PREL31, R_ARM_PREL31},
ba93b8ac
DJ		 1730 {BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2},
1731 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
1732 {BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32},
1733 {BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32},
1734 {BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32},
1735 {BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32},
1736 {BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32},
1737 {BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32},
1738 {BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32},
1739 {BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32},
c19d1205
ZW		 1740 {BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT},
1741 {BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY},
b6895b4f
PB		 1742 {BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC},
1743 {BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS},
1744 {BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC},
1745 {BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL},
1746 {BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC},
1747 {BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS},
1748 {BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC},
1749 {BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL},
4962c51a
MS		 1750 {BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC},
1751 {BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0},
1752 {BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC},
1753 {BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1},
1754 {BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2},
1755 {BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0},
1756 {BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1},
1757 {BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2},
1758 {BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0},
1759 {BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1},
1760 {BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2},
1761 {BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0},
1762 {BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1},
1763 {BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2},
1764 {BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC},
1765 {BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0},
1766 {BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC},
1767 {BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1},
1768 {BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2},
1769 {BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0},
1770 {BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1},
1771 {BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2},
1772 {BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0},
1773 {BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1},
1774 {BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2},
1775 {BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0},
1776 {BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1},
845b51d6
PB		 1777 {BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2},
1778 {BFD_RELOC_ARM_V4BX, R_ARM_V4BX}
7f266840
DJ		 1779 };
1780
1781static reloc_howto_type *
f1c71a59
ZW		 1782elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1783 bfd_reloc_code_real_type code)
7f266840
DJ		 1784{
1785 unsigned int i;
8029a119 1786
906e58ca 1787 for (i = 0; i < ARRAY_SIZE (elf32_arm_reloc_map); i ++)
c19d1205
ZW		 1788 if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
1789 return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
7f266840 1790
c19d1205 1791 return NULL;
7f266840
DJ		 1792}
1793
157090f7
AM		 1794static reloc_howto_type *
1795elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1796 const char *r_name)
1797{
1798 unsigned int i;
1799
906e58ca 1800 for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_1); i++)
157090f7
AM		 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
906e58ca 1805 for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_2); i++)
157090f7
AM		 1806 if (elf32_arm_howto_table_2[i].name != NULL
1807 && strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0)
1808 return &elf32_arm_howto_table_2[i];
1809
1810 return NULL;
1811}
1812
906e58ca
NC		 1813/* Support for core dump NOTE sections. */
1814
7f266840 1815static bfd_boolean
f1c71a59 1816elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
7f266840
DJ		 1817{
1818 int offset;
1819 size_t size;
1820
1821 switch (note->descsz)
1822 {
1823 default:
1824 return FALSE;
1825
8029a119 1826 case 148: /* Linux/ARM 32-bit. */
7f266840
DJ		 1827 /* pr_cursig */
1828 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1829
1830 /* pr_pid */
1831 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1832
1833 /* pr_reg */
1834 offset = 72;
1835 size = 72;
1836
1837 break;
1838 }
1839
1840 /* Make a ".reg/999" section. */
1841 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1842 size, note->descpos + offset);
1843}
1844
1845static bfd_boolean
f1c71a59 1846elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
7f266840
DJ		 1847{
1848 switch (note->descsz)
1849 {
1850 default:
1851 return FALSE;
1852
8029a119 1853 case 124: /* Linux/ARM elf_prpsinfo. */
7f266840
DJ		 1854 elf_tdata (abfd)->core_program
1855 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
1856 elf_tdata (abfd)->core_command
1857 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
1858 }
1859
1860 /* Note that for some reason, a spurious space is tacked
1861 onto the end of the args in some (at least one anyway)
1862 implementations, so strip it off if it exists. */
7f266840
DJ		 1863 {
1864 char *command = elf_tdata (abfd)->core_command;
1865 int n = strlen (command);
1866
1867 if (0 < n && command[n - 1] == ' ')
1868 command[n - 1] = '\0';
1869 }
1870
1871 return TRUE;
1872}
1873
1874#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
1875#define TARGET_LITTLE_NAME "elf32-littlearm"
1876#define TARGET_BIG_SYM bfd_elf32_bigarm_vec
1877#define TARGET_BIG_NAME "elf32-bigarm"
1878
1879#define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
1880#define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
1881
252b5132
RH		 1882typedef unsigned long int insn32;
1883typedef unsigned short int insn16;
1884
3a4a14e9
PB		 1885/* In lieu of proper flags, assume all EABIv4 or later objects are
1886 interworkable. */
57e8b36a 1887#define INTERWORK_FLAG(abfd) \
3a4a14e9 1888 (EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
3e6b1042
DJ		 1889 || (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK) \
1890 || ((abfd)->flags & BFD_LINKER_CREATED))
9b485d32 1891
252b5132
RH		 1892/* The linker script knows the section names for placement.
1893 The entry_names are used to do simple name mangling on the stubs.
1894 Given a function name, and its type, the stub can be found. The
9b485d32 1895 name can be changed. The only requirement is the %s be present. */
252b5132
RH		 1896#define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
1897#define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
1898
1899#define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
1900#define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
1901
c7b8f16e
JB		 1902#define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
1903#define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
1904
845b51d6
PB		 1905#define ARM_BX_GLUE_SECTION_NAME ".v4_bx"
1906#define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d"
1907
7413f23f
DJ		 1908#define STUB_ENTRY_NAME "__%s_veneer"
1909
252b5132
RH		 1910/* The name of the dynamic interpreter. This is put in the .interp
1911 section. */
1912#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
1913
5e681ec4
PB		 1914#ifdef FOUR_WORD_PLT
1915
252b5132
RH		 1916/* The first entry in a procedure linkage table looks like
1917 this. It is set up so that any shared library function that is
59f2c4e7 1918 called before the relocation has been set up calls the dynamic
9b485d32 1919 linker first. */
e5a52504 1920static const bfd_vma elf32_arm_plt0_entry [] =
5e681ec4
PB		 1921 {
1922 0xe52de004, /* str lr, [sp, #-4]! */
1923 0xe59fe010, /* ldr lr, [pc, #16] */
1924 0xe08fe00e, /* add lr, pc, lr */
1925 0xe5bef008, /* ldr pc, [lr, #8]! */
1926 };
1927
1928/* Subsequent entries in a procedure linkage table look like
1929 this. */
e5a52504 1930static const bfd_vma elf32_arm_plt_entry [] =
5e681ec4
PB		 1931 {
1932 0xe28fc600, /* add ip, pc, #NN */
1933 0xe28cca00, /* add ip, ip, #NN */
1934 0xe5bcf000, /* ldr pc, [ip, #NN]! */
1935 0x00000000, /* unused */
1936 };
1937
1938#else
1939
5e681ec4
PB		 1940/* The first entry in a procedure linkage table looks like
1941 this. It is set up so that any shared library function that is
1942 called before the relocation has been set up calls the dynamic
1943 linker first. */
e5a52504 1944static const bfd_vma elf32_arm_plt0_entry [] =
917583ad 1945 {
5e681ec4
PB		 1946 0xe52de004, /* str lr, [sp, #-4]! */
1947 0xe59fe004, /* ldr lr, [pc, #4] */
1948 0xe08fe00e, /* add lr, pc, lr */
1949 0xe5bef008, /* ldr pc, [lr, #8]! */
1950 0x00000000, /* &GOT[0] - . */
917583ad 1951 };
252b5132
RH		 1952
1953/* Subsequent entries in a procedure linkage table look like
1954 this. */
e5a52504 1955static const bfd_vma elf32_arm_plt_entry [] =
5e681ec4
PB		 1956 {
1957 0xe28fc600, /* add ip, pc, #0xNN00000 */
1958 0xe28cca00, /* add ip, ip, #0xNN000 */
1959 0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
1960 };
1961
1962#endif
252b5132 1963
00a97672
RS		 1964/* The format of the first entry in the procedure linkage table
1965 for a VxWorks executable. */
1966static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] =
1967 {
1968 0xe52dc008, /* str ip,[sp,#-8]! */
1969 0xe59fc000, /* ldr ip,[pc] */
1970 0xe59cf008, /* ldr pc,[ip,#8] */
1971 0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
1972 };
1973
1974/* The format of subsequent entries in a VxWorks executable. */
1975static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] =
1976 {
1977 0xe59fc000, /* ldr ip,[pc] */
1978 0xe59cf000, /* ldr pc,[ip] */
1979 0x00000000, /* .long @got */
1980 0xe59fc000, /* ldr ip,[pc] */
1981 0xea000000, /* b _PLT */
1982 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1983 };
1984
1985/* The format of entries in a VxWorks shared library. */
1986static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] =
1987 {
1988 0xe59fc000, /* ldr ip,[pc] */
1989 0xe79cf009, /* ldr pc,[ip,r9] */
1990 0x00000000, /* .long @got */
1991 0xe59fc000, /* ldr ip,[pc] */
1992 0xe599f008, /* ldr pc,[r9,#8] */
1993 0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
1994 };
1995
b7693d02
DJ		 1996/* An initial stub used if the PLT entry is referenced from Thumb code. */
1997#define PLT_THUMB_STUB_SIZE 4
1998static const bfd_vma elf32_arm_plt_thumb_stub [] =
1999 {
2000 0x4778, /* bx pc */
2001 0x46c0 /* nop */
2002 };
2003
e5a52504
MM		 2004/* The entries in a PLT when using a DLL-based target with multiple
2005 address spaces. */
906e58ca 2006static const bfd_vma elf32_arm_symbian_plt_entry [] =
e5a52504 2007 {
83a358aa 2008 0xe51ff004, /* ldr pc, [pc, #-4] */
e5a52504
MM		 2009 0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
2010 };
2011
906e58ca
NC		 2012#define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8)
2013#define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8)
2014#define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4)
2015#define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4)
2016#define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4)
2017#define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4)
2018
461a49ca
DJ		 2019enum stub_insn_type
2020 {
2021 THUMB16_TYPE = 1,
2022 THUMB32_TYPE,
2023 ARM_TYPE,
2024 DATA_TYPE
2025 };
2026
461a49ca
DJ		 2027#define THUMB16_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 0}
2028#define THUMB32_INSN(X) {(X), THUMB32_TYPE, R_ARM_NONE, 0}
2029#define ARM_INSN(X) {(X), ARM_TYPE, R_ARM_NONE, 0}
2030#define ARM_REL_INSN(X, Z) {(X), ARM_TYPE, R_ARM_JUMP24, (Z)}
2031#define DATA_WORD(X,Y,Z) {(X), DATA_TYPE, (Y), (Z)}
2032
2033typedef struct
2034{
2035 bfd_vma data;
2036 enum stub_insn_type type;
ebe24dd4 2037 unsigned int r_type;
461a49ca
DJ		 2038 int reloc_addend;
2039} insn_sequence;
2040
fea2b4d6
CL		 2041/* Arm/Thumb -> Arm/Thumb long branch stub. On V5T and above, use blx
2042 to reach the stub if necessary. */
461a49ca 2043static const insn_sequence elf32_arm_stub_long_branch_any_any[] =
906e58ca 2044 {
461a49ca
DJ		 2045 ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */
2046 DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
906e58ca
NC		 2047 };
2048
fea2b4d6
CL		 2049/* V4T Arm -> Thumb long branch stub. Used on V4T where blx is not
2050 available. */
461a49ca 2051static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb[] =
906e58ca 2052 {
461a49ca
DJ		 2053 ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */
2054 ARM_INSN(0xe12fff1c), /* bx ip */
2055 DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
906e58ca
NC		 2056 };
2057
d3626fb0 2058/* Thumb -> Thumb long branch stub. Used on M-profile architectures. */
461a49ca 2059static const insn_sequence elf32_arm_stub_long_branch_thumb_only[] =
906e58ca 2060 {
461a49ca
DJ		 2061 THUMB16_INSN(0xb401), /* push {r0} */
2062 THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */
2063 THUMB16_INSN(0x4684), /* mov ip, r0 */
2064 THUMB16_INSN(0xbc01), /* pop {r0} */
2065 THUMB16_INSN(0x4760), /* bx ip */
2066 THUMB16_INSN(0xbf00), /* nop */
2067 DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
906e58ca
NC		 2068 };
2069
d3626fb0
CL		 2070/* V4T Thumb -> Thumb long branch stub. Using the stack is not
2071 allowed. */
2072static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb[] =
2073 {
2074 THUMB16_INSN(0x4778), /* bx pc */
2075 THUMB16_INSN(0x46c0), /* nop */
2076 ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */
2077 ARM_INSN(0xe12fff1c), /* bx ip */
2078 DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
2079 };
2080
fea2b4d6
CL		 2081/* V4T Thumb -> ARM long branch stub. Used on V4T where blx is not
2082 available. */
461a49ca 2083static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm[] =
906e58ca 2084 {
461a49ca
DJ		 2085 THUMB16_INSN(0x4778), /* bx pc */
2086 THUMB16_INSN(0x46c0), /* nop */
2087 ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */
2088 DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
906e58ca
NC		 2089 };
2090
fea2b4d6
CL		 2091/* V4T Thumb -> ARM short branch stub. Shorter variant of the above
2092 one, when the destination is close enough. */
461a49ca 2093static const insn_sequence elf32_arm_stub_short_branch_v4t_thumb_arm[] =
c820be07 2094 {
461a49ca
DJ		 2095 THUMB16_INSN(0x4778), /* bx pc */
2096 THUMB16_INSN(0x46c0), /* nop */
2097 ARM_REL_INSN(0xea000000, -8), /* b (X-8) */
c820be07
NC		 2098 };
2099
cf3eccff 2100/* ARM/Thumb -> ARM long branch stub, PIC. On V5T and above, use
fea2b4d6 2101 blx to reach the stub if necessary. */
cf3eccff 2102static const insn_sequence elf32_arm_stub_long_branch_any_arm_pic[] =
906e58ca 2103 {
461a49ca
DJ		 2104 ARM_INSN(0xe59fc000), /* ldr r12, [pc] */
2105 ARM_INSN(0xe08ff00c), /* add pc, pc, ip */
2106 DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X-4) */
906e58ca
NC		 2107 };
2108
cf3eccff
DJ		 2109/* ARM/Thumb -> Thumb long branch stub, PIC. On V5T and above, use
2110 blx to reach the stub if necessary. We can not add into pc;
2111 it is not guaranteed to mode switch (different in ARMv6 and
2112 ARMv7). */
2113static const insn_sequence elf32_arm_stub_long_branch_any_thumb_pic[] =
2114 {
2115 ARM_INSN(0xe59fc004), /* ldr r12, [pc, #4] */
2116 ARM_INSN(0xe08fc00c), /* add ip, pc, ip */
2117 ARM_INSN(0xe12fff1c), /* bx ip */
2118 DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */
2119 };
2120
ebe24dd4
CL		 2121/* V4T ARM -> ARM long branch stub, PIC. */
2122static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb_pic[] =
2123 {
2124 ARM_INSN(0xe59fc004), /* ldr ip, [pc, #4] */
2125 ARM_INSN(0xe08fc00c), /* add ip, pc, ip */
2126 ARM_INSN(0xe12fff1c), /* bx ip */
2127 DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */
2128 };
2129
2130/* V4T Thumb -> ARM long branch stub, PIC. */
2131static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm_pic[] =
2132 {
2133 THUMB16_INSN(0x4778), /* bx pc */
2134 THUMB16_INSN(0x46c0), /* nop */
2135 ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */
2136 ARM_INSN(0xe08cf00f), /* add pc, ip, pc */
2137 DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X) */
2138 };
2139
d3626fb0
CL		 2140/* Thumb -> Thumb long branch stub, PIC. Used on M-profile
2141 architectures. */
ebe24dd4
CL		 2142static const insn_sequence elf32_arm_stub_long_branch_thumb_only_pic[] =
2143 {
2144 THUMB16_INSN(0xb401), /* push {r0} */
2145 THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */
2146 THUMB16_INSN(0x46fc), /* mov ip, pc */
2147 THUMB16_INSN(0x4484), /* add ip, r0 */
2148 THUMB16_INSN(0xbc01), /* pop {r0} */
2149 THUMB16_INSN(0x4760), /* bx ip */
2150 DATA_WORD(0, R_ARM_REL32, 4), /* dcd R_ARM_REL32(X) */
2151 };
2152
d3626fb0
CL		 2153/* V4T Thumb -> Thumb long branch stub, PIC. Using the stack is not
2154 allowed. */
2155static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb_pic[] =
2156 {
2157 THUMB16_INSN(0x4778), /* bx pc */
2158 THUMB16_INSN(0x46c0), /* nop */
2159 ARM_INSN(0xe59fc004), /* ldr ip, [pc, #4] */
2160 ARM_INSN(0xe08fc00c), /* add ip, pc, ip */
2161 ARM_INSN(0xe12fff1c), /* bx ip */
2162 DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */
2163 };
2164
906e58ca
NC		 2165/* Section name for stubs is the associated section name plus this
2166 string. */
2167#define STUB_SUFFIX ".stub"
2168
738a79f6
CL		 2169/* One entry per long/short branch stub defined above. */
2170#define DEF_STUBS \
2171 DEF_STUB(long_branch_any_any) \
2172 DEF_STUB(long_branch_v4t_arm_thumb) \
2173 DEF_STUB(long_branch_thumb_only) \
2174 DEF_STUB(long_branch_v4t_thumb_thumb) \
2175 DEF_STUB(long_branch_v4t_thumb_arm) \
2176 DEF_STUB(short_branch_v4t_thumb_arm) \
2177 DEF_STUB(long_branch_any_arm_pic) \
2178 DEF_STUB(long_branch_any_thumb_pic) \
2179 DEF_STUB(long_branch_v4t_thumb_thumb_pic) \
2180 DEF_STUB(long_branch_v4t_arm_thumb_pic) \
2181 DEF_STUB(long_branch_v4t_thumb_arm_pic) \
2182 DEF_STUB(long_branch_thumb_only_pic)
2183
2184#define DEF_STUB(x) arm_stub_##x,
2185enum elf32_arm_stub_type {
906e58ca 2186 arm_stub_none,
738a79f6
CL		 2187 DEF_STUBS
2188};
2189#undef DEF_STUB
2190
2191typedef struct
2192{
2193 const insn_sequence* template;
2194 int template_size;
2195} stub_def;
2196
2197#define DEF_STUB(x) {elf32_arm_stub_##x, ARRAY_SIZE(elf32_arm_stub_##x)},
2198static const stub_def stub_definitions[] = {
2199 {NULL, 0},
2200 DEF_STUBS
906e58ca
NC		 2201};
2202
2203struct elf32_arm_stub_hash_entry
2204{
2205 /* Base hash table entry structure. */
2206 struct bfd_hash_entry root;
2207
2208 /* The stub section. */
2209 asection *stub_sec;
2210
2211 /* Offset within stub_sec of the beginning of this stub. */
2212 bfd_vma stub_offset;
2213
2214 /* Given the symbol's value and its section we can determine its final
2215 value when building the stubs (so the stub knows where to jump). */
2216 bfd_vma target_value;
2217 asection *target_section;
2218
461a49ca 2219 /* The stub type. */
906e58ca 2220 enum elf32_arm_stub_type stub_type;
461a49ca
DJ		 2221 /* Its encoding size in bytes. */
2222 int stub_size;
2223 /* Its template. */
2224 const insn_sequence *stub_template;
2225 /* The size of the template (number of entries). */
2226 int stub_template_size;
906e58ca
NC		 2227
2228 /* The symbol table entry, if any, that this was derived from. */
2229 struct elf32_arm_link_hash_entry *h;
2230
2231 /* Destination symbol type (STT_ARM_TFUNC, ...) */
2232 unsigned char st_type;
2233
2234 /* Where this stub is being called from, or, in the case of combined
2235 stub sections, the first input section in the group. */
2236 asection *id_sec;
7413f23f
DJ		 2237
2238 /* The name for the local symbol at the start of this stub. The
2239 stub name in the hash table has to be unique; this does not, so
2240 it can be friendlier. */
2241 char *output_name;
906e58ca
NC		 2242};
2243
e489d0ae
PB		 2244/* Used to build a map of a section. This is required for mixed-endian
2245 code/data. */
2246
2247typedef struct elf32_elf_section_map
2248{
2249 bfd_vma vma;
2250 char type;
2251}
2252elf32_arm_section_map;
2253
c7b8f16e
JB		 2254/* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
2255
2256typedef enum
2257{
2258 VFP11_ERRATUM_BRANCH_TO_ARM_VENEER,
2259 VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER,
2260 VFP11_ERRATUM_ARM_VENEER,
2261 VFP11_ERRATUM_THUMB_VENEER
2262}
2263elf32_vfp11_erratum_type;
2264
2265typedef struct elf32_vfp11_erratum_list
2266{
2267 struct elf32_vfp11_erratum_list *next;
2268 bfd_vma vma;
2269 union
2270 {
2271 struct
2272 {
2273 struct elf32_vfp11_erratum_list *veneer;
2274 unsigned int vfp_insn;
2275 } b;
2276 struct
2277 {
2278 struct elf32_vfp11_erratum_list *branch;
2279 unsigned int id;
2280 } v;
2281 } u;
2282 elf32_vfp11_erratum_type type;
2283}
2284elf32_vfp11_erratum_list;
2285
8e3de13a 2286typedef struct _arm_elf_section_data
e489d0ae
PB		 2287{
2288 struct bfd_elf_section_data elf;
8e3de13a 2289 unsigned int mapcount;
c7b8f16e 2290 unsigned int mapsize;
e489d0ae 2291 elf32_arm_section_map *map;
c7b8f16e
JB		 2292 unsigned int erratumcount;
2293 elf32_vfp11_erratum_list *erratumlist;
8e3de13a
NC		 2294}
2295_arm_elf_section_data;
e489d0ae
PB		 2296
2297#define elf32_arm_section_data(sec) \
8e3de13a 2298 ((_arm_elf_section_data *) elf_section_data (sec))
e489d0ae 2299
ba93b8ac
DJ		 2300/* The size of the thread control block. */
2301#define TCB_SIZE 8
2302
0ffa91dd 2303struct elf_arm_obj_tdata
ba93b8ac
DJ		 2304{
2305 struct elf_obj_tdata root;
2306
2307 /* tls_type for each local got entry. */
2308 char *local_got_tls_type;
ee065d83 2309
bf21ed78
MS		 2310 /* Zero to warn when linking objects with incompatible enum sizes. */
2311 int no_enum_size_warning;
a9dc9481
JM		 2312
2313 /* Zero to warn when linking objects with incompatible wchar_t sizes. */
2314 int no_wchar_size_warning;
ba93b8ac
DJ		 2315};
2316
0ffa91dd
NC		 2317#define elf_arm_tdata(bfd) \
2318 ((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
ba93b8ac 2319
0ffa91dd
NC		 2320#define elf32_arm_local_got_tls_type(bfd) \
2321 (elf_arm_tdata (bfd)->local_got_tls_type)
2322
2323#define is_arm_elf(bfd) \
2324 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2325 && elf_tdata (bfd) != NULL \
2326 && elf_object_id (bfd) == ARM_ELF_TDATA)
ba93b8ac
DJ		 2327
2328static bfd_boolean
2329elf32_arm_mkobject (bfd *abfd)
2330{
0ffa91dd
NC		 2331 return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata),
2332 ARM_ELF_TDATA);
ba93b8ac
DJ		 2333}
2334
252b5132
RH		 2335/* The ARM linker needs to keep track of the number of relocs that it
2336 decides to copy in check_relocs for each symbol. This is so that
2337 it can discard PC relative relocs if it doesn't need them when
2338 linking with -Bsymbolic. We store the information in a field
2339 extending the regular ELF linker hash table. */
2340
ba93b8ac
DJ		 2341/* This structure keeps track of the number of relocs we have copied
2342 for a given symbol. */
5e681ec4 2343struct elf32_arm_relocs_copied
917583ad
NC		 2344 {
2345 /* Next section. */
5e681ec4 2346 struct elf32_arm_relocs_copied * next;
917583ad
NC		 2347 /* A section in dynobj. */
2348 asection * section;
2349 /* Number of relocs copied in this section. */
2350 bfd_size_type count;
ba93b8ac
DJ		 2351 /* Number of PC-relative relocs copied in this section. */
2352 bfd_size_type pc_count;
917583ad 2353 };
252b5132 2354
ba93b8ac
DJ		 2355#define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
2356
ba96a88f 2357/* Arm ELF linker hash entry. */
252b5132 2358struct elf32_arm_link_hash_entry
917583ad
NC		 2359 {
2360 struct elf_link_hash_entry root;
252b5132 2361
917583ad 2362 /* Number of PC relative relocs copied for this symbol. */
5e681ec4 2363 struct elf32_arm_relocs_copied * relocs_copied;
b7693d02
DJ		 2364
2365 /* We reference count Thumb references to a PLT entry separately,
2366 so that we can emit the Thumb trampoline only if needed. */
2367 bfd_signed_vma plt_thumb_refcount;
2368
bd97cb95
DJ		 2369 /* Some references from Thumb code may be eliminated by BL->BLX
2370 conversion, so record them separately. */
2371 bfd_signed_vma plt_maybe_thumb_refcount;
2372
b7693d02
DJ		 2373 /* Since PLT entries have variable size if the Thumb prologue is
2374 used, we need to record the index into .got.plt instead of
2375 recomputing it from the PLT offset. */
2376 bfd_signed_vma plt_got_offset;
ba93b8ac
DJ		 2377
2378#define GOT_UNKNOWN 0
2379#define GOT_NORMAL 1
2380#define GOT_TLS_GD 2
2381#define GOT_TLS_IE 4
2382 unsigned char tls_type;
a4fd1a8e
PB		 2383
2384 /* The symbol marking the real symbol location for exported thumb
2385 symbols with Arm stubs. */
2386 struct elf_link_hash_entry *export_glue;
906e58ca 2387
da5938a2 2388 /* A pointer to the most recently used stub hash entry against this
8029a119 2389 symbol. */
da5938a2 2390 struct elf32_arm_stub_hash_entry *stub_cache;
917583ad 2391 };
252b5132 2392
252b5132 2393/* Traverse an arm ELF linker hash table. */
252b5132
RH		 2394#define elf32_arm_link_hash_traverse(table, func, info) \
2395 (elf_link_hash_traverse \
2396 (&(table)->root, \
b7693d02 2397 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
252b5132
RH		 2398 (info)))
2399
2400/* Get the ARM elf linker hash table from a link_info structure. */
2401#define elf32_arm_hash_table(info) \
2402 ((struct elf32_arm_link_hash_table *) ((info)->hash))
2403
906e58ca
NC		 2404#define arm_stub_hash_lookup(table, string, create, copy) \
2405 ((struct elf32_arm_stub_hash_entry *) \
2406 bfd_hash_lookup ((table), (string), (create), (copy)))
2407
9b485d32 2408/* ARM ELF linker hash table. */
252b5132 2409struct elf32_arm_link_hash_table
906e58ca
NC		 2410{
2411 /* The main hash table. */
2412 struct elf_link_hash_table root;
252b5132 2413
906e58ca
NC		 2414 /* The size in bytes of the section containing the Thumb-to-ARM glue. */
2415 bfd_size_type thumb_glue_size;
252b5132 2416
906e58ca
NC		 2417 /* The size in bytes of the section containing the ARM-to-Thumb glue. */
2418 bfd_size_type arm_glue_size;
252b5132 2419
906e58ca
NC		 2420 /* The size in bytes of section containing the ARMv4 BX veneers. */
2421 bfd_size_type bx_glue_size;
845b51d6 2422
906e58ca
NC		 2423 /* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when
2424 veneer has been populated. */
2425 bfd_vma bx_glue_offset[15];
845b51d6 2426
906e58ca
NC		 2427 /* The size in bytes of the section containing glue for VFP11 erratum
2428 veneers. */
2429 bfd_size_type vfp11_erratum_glue_size;
c7b8f16e 2430
906e58ca
NC		 2431 /* An arbitrary input BFD chosen to hold the glue sections. */
2432 bfd * bfd_of_glue_owner;
ba96a88f 2433
906e58ca
NC		 2434 /* Nonzero to output a BE8 image. */
2435 int byteswap_code;
e489d0ae 2436
906e58ca
NC		 2437 /* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
2438 Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
2439 int target1_is_rel;
9c504268 2440
906e58ca
NC		 2441 /* The relocation to use for R_ARM_TARGET2 relocations. */
2442 int target2_reloc;
eb043451 2443
906e58ca
NC		 2444 /* 0 = Ignore R_ARM_V4BX.
2445 1 = Convert BX to MOV PC.
2446 2 = Generate v4 interworing stubs. */
2447 int fix_v4bx;
319850b4 2448
906e58ca
NC		 2449 /* Nonzero if the ARM/Thumb BLX instructions are available for use. */
2450 int use_blx;
33bfe774 2451
906e58ca
NC		 2452 /* What sort of code sequences we should look for which may trigger the
2453 VFP11 denorm erratum. */
2454 bfd_arm_vfp11_fix vfp11_fix;
c7b8f16e 2455
906e58ca
NC		 2456 /* Global counter for the number of fixes we have emitted. */
2457 int num_vfp11_fixes;
c7b8f16e 2458
906e58ca
NC		 2459 /* Nonzero to force PIC branch veneers. */
2460 int pic_veneer;
27e55c4d 2461
906e58ca
NC		 2462 /* The number of bytes in the initial entry in the PLT. */
2463 bfd_size_type plt_header_size;
e5a52504 2464
906e58ca
NC		 2465 /* The number of bytes in the subsequent PLT etries. */
2466 bfd_size_type plt_entry_size;
e5a52504 2467
906e58ca
NC		 2468 /* True if the target system is VxWorks. */
2469 int vxworks_p;
00a97672 2470
906e58ca
NC		 2471 /* True if the target system is Symbian OS. */
2472 int symbian_p;
e5a52504 2473
906e58ca
NC		 2474 /* True if the target uses REL relocations. */
2475 int use_rel;
4e7fd91e 2476
906e58ca
NC		 2477 /* Short-cuts to get to dynamic linker sections. */
2478 asection *sgot;
2479 asection *sgotplt;
2480 asection *srelgot;
2481 asection *splt;
2482 asection *srelplt;
2483 asection *sdynbss;
2484 asection *srelbss;
5e681ec4 2485
906e58ca
NC		 2486 /* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
2487 asection *srelplt2;
00a97672 2488
906e58ca
NC		 2489 /* Data for R_ARM_TLS_LDM32 relocations. */
2490 union
2491 {
2492 bfd_signed_vma refcount;
2493 bfd_vma offset;
2494 } tls_ldm_got;
b7693d02 2495
906e58ca
NC		 2496 /* Small local sym to section mapping cache. */
2497 struct sym_sec_cache sym_sec;
2498
2499 /* For convenience in allocate_dynrelocs. */
2500 bfd * obfd;
2501
2502 /* The stub hash table. */
2503 struct bfd_hash_table stub_hash_table;
2504
2505 /* Linker stub bfd. */
2506 bfd *stub_bfd;
2507
2508 /* Linker call-backs. */
2509 asection * (*add_stub_section) (const char *, asection *);
2510 void (*layout_sections_again) (void);
2511
2512 /* Array to keep track of which stub sections have been created, and
2513 information on stub grouping. */
2514 struct map_stub
2515 {
2516 /* This is the section to which stubs in the group will be
2517 attached. */
2518 asection *link_sec;
2519 /* The stub section. */
2520 asection *stub_sec;
2521 } *stub_group;
2522
2523 /* Assorted information used by elf32_arm_size_stubs. */
2524 unsigned int bfd_count;
2525 int top_index;
2526 asection **input_list;
2527};
252b5132 2528
780a67af
NC		 2529/* Create an entry in an ARM ELF linker hash table. */
2530
2531static struct bfd_hash_entry *
57e8b36a
NC		 2532elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
2533 struct bfd_hash_table * table,
2534 const char * string)
780a67af
NC		 2535{
2536 struct elf32_arm_link_hash_entry * ret =
2537 (struct elf32_arm_link_hash_entry *) entry;
2538
2539 /* Allocate the structure if it has not already been allocated by a
2540 subclass. */
906e58ca 2541 if (ret == NULL)
57e8b36a
NC		 2542 ret = bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
2543 if (ret == NULL)
780a67af
NC		 2544 return (struct bfd_hash_entry *) ret;
2545
2546 /* Call the allocation method of the superclass. */
2547 ret = ((struct elf32_arm_link_hash_entry *)
2548 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
2549 table, string));
57e8b36a 2550 if (ret != NULL)
b7693d02
DJ		 2551 {
2552 ret->relocs_copied = NULL;
ba93b8ac 2553 ret->tls_type = GOT_UNKNOWN;
b7693d02 2554 ret->plt_thumb_refcount = 0;
bd97cb95 2555 ret->plt_maybe_thumb_refcount = 0;
b7693d02 2556 ret->plt_got_offset = -1;
a4fd1a8e 2557 ret->export_glue = NULL;
906e58ca
NC		 2558
2559 ret->stub_cache = NULL;
b7693d02 2560 }
780a67af
NC		 2561
2562 return (struct bfd_hash_entry *) ret;
2563}
2564
906e58ca
NC		 2565/* Initialize an entry in the stub hash table. */
2566
2567static struct bfd_hash_entry *
2568stub_hash_newfunc (struct bfd_hash_entry *entry,
2569 struct bfd_hash_table *table,
2570 const char *string)
2571{
2572 /* Allocate the structure if it has not already been allocated by a
2573 subclass. */
2574 if (entry == NULL)
2575 {
2576 entry = bfd_hash_allocate (table,
2577 sizeof (struct elf32_arm_stub_hash_entry));
2578 if (entry == NULL)
2579 return entry;
2580 }
2581
2582 /* Call the allocation method of the superclass. */
2583 entry = bfd_hash_newfunc (entry, table, string);
2584 if (entry != NULL)
2585 {
2586 struct elf32_arm_stub_hash_entry *eh;
2587
2588 /* Initialize the local fields. */
2589 eh = (struct elf32_arm_stub_hash_entry *) entry;
2590 eh->stub_sec = NULL;
2591 eh->stub_offset = 0;
2592 eh->target_value = 0;
2593 eh->target_section = NULL;
2594 eh->stub_type = arm_stub_none;
461a49ca
DJ		 2595 eh->stub_size = 0;
2596 eh->stub_template = NULL;
2597 eh->stub_template_size = 0;
906e58ca
NC		 2598 eh->h = NULL;
2599 eh->id_sec = NULL;
2600 }
2601
2602 return entry;
2603}
2604
00a97672 2605/* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
5e681ec4
PB		 2606 shortcuts to them in our hash table. */
2607
2608static bfd_boolean
57e8b36a 2609create_got_section (bfd *dynobj, struct bfd_link_info *info)
5e681ec4
PB		 2610{
2611 struct elf32_arm_link_hash_table *htab;
2612
e5a52504
MM		 2613 htab = elf32_arm_hash_table (info);
2614 /* BPABI objects never have a GOT, or associated sections. */
2615 if (htab->symbian_p)
2616 return TRUE;
2617
5e681ec4
PB		 2618 if (! _bfd_elf_create_got_section (dynobj, info))
2619 return FALSE;
2620
5e681ec4
PB		 2621 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2622 htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2623 if (!htab->sgot || !htab->sgotplt)
2624 abort ();
2625
00a97672
RS		 2626 htab->srelgot = bfd_make_section_with_flags (dynobj,
2627 RELOC_SECTION (htab, ".got"),
3496cb2a
L		 2628 (SEC_ALLOC | SEC_LOAD
2629 | SEC_HAS_CONTENTS
2630 | SEC_IN_MEMORY
2631 | SEC_LINKER_CREATED
2632 | SEC_READONLY));
5e681ec4 2633 if (htab->srelgot == NULL
5e681ec4
PB		 2634 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
2635 return FALSE;
2636 return TRUE;
2637}
2638
00a97672
RS		 2639/* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
2640 .rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
5e681ec4
PB		 2641 hash table. */
2642
2643static bfd_boolean
57e8b36a 2644elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
5e681ec4
PB		 2645{
2646 struct elf32_arm_link_hash_table *htab;
2647
2648 htab = elf32_arm_hash_table (info);
2649 if (!htab->sgot && !create_got_section (dynobj, info))
2650 return FALSE;
2651
2652 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2653 return FALSE;
2654
2655 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
00a97672
RS		 2656 htab->srelplt = bfd_get_section_by_name (dynobj,
2657 RELOC_SECTION (htab, ".plt"));
5e681ec4
PB		 2658 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2659 if (!info->shared)
00a97672
RS		 2660 htab->srelbss = bfd_get_section_by_name (dynobj,
2661 RELOC_SECTION (htab, ".bss"));
2662
2663 if (htab->vxworks_p)
2664 {
2665 if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
2666 return FALSE;
2667
2668 if (info->shared)
2669 {
2670 htab->plt_header_size = 0;
2671 htab->plt_entry_size
2672 = 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry);
2673 }
2674 else
2675 {
2676 htab->plt_header_size
2677 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry);
2678 htab->plt_entry_size
2679 = 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry);
2680 }
2681 }
5e681ec4 2682
906e58ca 2683 if (!htab->splt
e5a52504
MM		 2684 || !htab->srelplt
2685 || !htab->sdynbss
5e681ec4
PB		 2686 || (!info->shared && !htab->srelbss))
2687 abort ();
2688
2689 return TRUE;
2690}
2691
906e58ca
NC		 2692/* Copy the extra info we tack onto an elf_link_hash_entry. */
2693
2694static void
2695elf32_arm_copy_indirect_symbol (struct bfd_link_info *info,
2696 struct elf_link_hash_entry *dir,
2697 struct elf_link_hash_entry *ind)
2698{
2699 struct elf32_arm_link_hash_entry *edir, *eind;
2700
2701 edir = (struct elf32_arm_link_hash_entry *) dir;
2702 eind = (struct elf32_arm_link_hash_entry *) ind;
2703
2704 if (eind->relocs_copied != NULL)
2705 {
2706 if (edir->relocs_copied != NULL)
2707 {
2708 struct elf32_arm_relocs_copied **pp;
2709 struct elf32_arm_relocs_copied *p;
2710
2711 /* Add reloc counts against the indirect sym to the direct sym
2712 list. Merge any entries against the same section. */
2713 for (pp = &eind->relocs_copied; (p = *pp) != NULL; )
2714 {
2715 struct elf32_arm_relocs_copied *q;
2716
2717 for (q = edir->relocs_copied; q != NULL; q = q->next)
2718 if (q->section == p->section)
2719 {
2720 q->pc_count += p->pc_count;
2721 q->count += p->count;
2722 *pp = p->next;
2723 break;
2724 }
2725 if (q == NULL)
2726 pp = &p->next;
2727 }
2728 *pp = edir->relocs_copied;
2729 }
2730
2731 edir->relocs_copied = eind->relocs_copied;
2732 eind->relocs_copied = NULL;
2733 }
2734
2735 if (ind->root.type == bfd_link_hash_indirect)
2736 {
2737 /* Copy over PLT info. */
2738 edir->plt_thumb_refcount += eind->plt_thumb_refcount;
2739 eind->plt_thumb_refcount = 0;
2740 edir->plt_maybe_thumb_refcount += eind->plt_maybe_thumb_refcount;
2741 eind->plt_maybe_thumb_refcount = 0;
2742
2743 if (dir->got.refcount <= 0)
2744 {
2745 edir->tls_type = eind->tls_type;
2746 eind->tls_type = GOT_UNKNOWN;
2747 }
2748 }
2749
2750 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
2751}
2752
2753/* Create an ARM elf linker hash table. */
2754
2755static struct bfd_link_hash_table *
2756elf32_arm_link_hash_table_create (bfd *abfd)
2757{
2758 struct elf32_arm_link_hash_table *ret;
2759 bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
2760
2761 ret = bfd_malloc (amt);
2762 if (ret == NULL)
2763 return NULL;
2764
2765 if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
2766 elf32_arm_link_hash_newfunc,
2767 sizeof (struct elf32_arm_link_hash_entry)))
2768 {
2769 free (ret);
2770 return NULL;
2771 }
2772
2773 ret->sgot = NULL;
2774 ret->sgotplt = NULL;
2775 ret->srelgot = NULL;
2776 ret->splt = NULL;
2777 ret->srelplt = NULL;
2778 ret->sdynbss = NULL;
2779 ret->srelbss = NULL;
2780 ret->srelplt2 = NULL;
2781 ret->thumb_glue_size = 0;
2782 ret->arm_glue_size = 0;
2783 ret->bx_glue_size = 0;
2784 memset (ret->bx_glue_offset, 0, sizeof (ret->bx_glue_offset));
2785 ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
2786 ret->vfp11_erratum_glue_size = 0;
2787 ret->num_vfp11_fixes = 0;
2788 ret->bfd_of_glue_owner = NULL;
2789 ret->byteswap_code = 0;
2790 ret->target1_is_rel = 0;
2791 ret->target2_reloc = R_ARM_NONE;
2792#ifdef FOUR_WORD_PLT
2793 ret->plt_header_size = 16;
2794 ret->plt_entry_size = 16;
2795#else
2796 ret->plt_header_size = 20;
2797 ret->plt_entry_size = 12;
2798#endif
2799 ret->fix_v4bx = 0;
2800 ret->use_blx = 0;
2801 ret->vxworks_p = 0;
2802 ret->symbian_p = 0;
2803 ret->use_rel = 1;
2804 ret->sym_sec.abfd = NULL;
2805 ret->obfd = abfd;
2806 ret->tls_ldm_got.refcount = 0;
6cee0a6f
L		 2807 ret->stub_bfd = NULL;
2808 ret->add_stub_section = NULL;
2809 ret->layout_sections_again = NULL;
2810 ret->stub_group = NULL;
2811 ret->bfd_count = 0;
2812 ret->top_index = 0;
2813 ret->input_list = NULL;
906e58ca
NC		 2814
2815 if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
2816 sizeof (struct elf32_arm_stub_hash_entry)))
2817 {
2818 free (ret);
2819 return NULL;
2820 }
2821
2822 return &ret->root.root;
2823}
2824
2825/* Free the derived linker hash table. */
2826
2827static void
2828elf32_arm_hash_table_free (struct bfd_link_hash_table *hash)
2829{
2830 struct elf32_arm_link_hash_table *ret
2831 = (struct elf32_arm_link_hash_table *) hash;
2832
2833 bfd_hash_table_free (&ret->stub_hash_table);
2834 _bfd_generic_link_hash_table_free (hash);
2835}
2836
2837/* Determine if we're dealing with a Thumb only architecture. */
2838
2839static bfd_boolean
2840using_thumb_only (struct elf32_arm_link_hash_table *globals)
2841{
2842 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2843 Tag_CPU_arch);
2844 int profile;
2845
2846 if (arch != TAG_CPU_ARCH_V7)
2847 return FALSE;
2848
2849 profile = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2850 Tag_CPU_arch_profile);
2851
2852 return profile == 'M';
2853}
2854
2855/* Determine if we're dealing with a Thumb-2 object. */
2856
2857static bfd_boolean
2858using_thumb2 (struct elf32_arm_link_hash_table *globals)
2859{
2860 int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
2861 Tag_CPU_arch);
2862 return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7;
2863}
2864
f4ac8484
DJ		 2865static bfd_boolean
2866arm_stub_is_thumb (enum elf32_arm_stub_type stub_type)
2867{
2868 switch (stub_type)
2869 {
fea2b4d6
CL		 2870 case arm_stub_long_branch_thumb_only:
2871 case arm_stub_long_branch_v4t_thumb_arm:
2872 case arm_stub_short_branch_v4t_thumb_arm:
ebe24dd4
CL		 2873 case arm_stub_long_branch_v4t_thumb_arm_pic:
2874 case arm_stub_long_branch_thumb_only_pic:
f4ac8484
DJ		 2875 return TRUE;
2876 case arm_stub_none:
2877 BFD_FAIL ();
2878 return FALSE;
2879 break;
2880 default:
2881 return FALSE;
2882 }
2883}
2884
906e58ca
NC		 2885/* Determine the type of stub needed, if any, for a call. */
2886
2887static enum elf32_arm_stub_type
2888arm_type_of_stub (struct bfd_link_info *info,
2889 asection *input_sec,
2890 const Elf_Internal_Rela *rel,
2891 unsigned char st_type,
2892 struct elf32_arm_link_hash_entry *hash,
c820be07
NC		 2893 bfd_vma destination,
2894 asection *sym_sec,
2895 bfd *input_bfd,
2896 const char *name)
906e58ca
NC		 2897{
2898 bfd_vma location;
2899 bfd_signed_vma branch_offset;
2900 unsigned int r_type;
2901 struct elf32_arm_link_hash_table * globals;
2902 int thumb2;
2903 int thumb_only;
2904 enum elf32_arm_stub_type stub_type = arm_stub_none;
5fa9e92f 2905 int use_plt = 0;
906e58ca 2906
da5938a2 2907 /* We don't know the actual type of destination in case it is of
8029a119 2908 type STT_SECTION: give up. */
da5938a2
NC		 2909 if (st_type == STT_SECTION)
2910 return stub_type;
2911
906e58ca
NC		 2912 globals = elf32_arm_hash_table (info);
2913
2914 thumb_only = using_thumb_only (globals);
2915
2916 thumb2 = using_thumb2 (globals);
2917
2918 /* Determine where the call point is. */
2919 location = (input_sec->output_offset
2920 + input_sec->output_section->vma
2921 + rel->r_offset);
2922
2923 branch_offset = (bfd_signed_vma)(destination - location);
2924
2925 r_type = ELF32_R_TYPE (rel->r_info);
2926
5fa9e92f 2927 /* Keep a simpler condition, for the sake of clarity. */
329dcd78 2928 if (globals->splt != NULL && hash != NULL && hash->root.plt.offset != (bfd_vma) -1)
5fa9e92f
CL		 2929 {
2930 use_plt = 1;
2931 /* Note when dealing with PLT entries: the main PLT stub is in
2932 ARM mode, so if the branch is in Thumb mode, another
2933 Thumb->ARM stub will be inserted later just before the ARM
2934 PLT stub. We don't take this extra distance into account
2935 here, because if a long branch stub is needed, we'll add a
2936 Thumb->Arm one and branch directly to the ARM PLT entry
2937 because it avoids spreading offset corrections in several
2938 places. */
2939 }
906e58ca 2940
155d87d7 2941 if (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24)
906e58ca 2942 {
5fa9e92f
CL		 2943 /* Handle cases where:
2944 - this call goes too far (different Thumb/Thumb2 max
2945 distance)
155d87d7
CL		 2946 - it's a Thumb->Arm call and blx is not available, or it's a
2947 Thumb->Arm branch (not bl). A stub is needed in this case,
2948 but only if this call is not through a PLT entry. Indeed,
2949 PLT stubs handle mode switching already.
5fa9e92f 2950 */
906e58ca
NC		 2951 if ((!thumb2
2952 && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET
2953 || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET)))
2954 || (thumb2
2955 && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET
2956 || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))
5fa9e92f 2957 || ((st_type != STT_ARM_TFUNC)
155d87d7
CL		 2958 && (((r_type == R_ARM_THM_CALL) && !globals->use_blx)
2959 || (r_type == R_ARM_THM_JUMP24))
5fa9e92f 2960 && !use_plt))
906e58ca
NC		 2961 {
2962 if (st_type == STT_ARM_TFUNC)
2963 {
2964 /* Thumb to thumb. */
2965 if (!thumb_only)
2966 {
2967 stub_type = (info->shared | globals->pic_veneer)
c2b4a39d 2968 /* PIC stubs. */
155d87d7
CL		 2969 ? ((globals->use_blx
2970 && (r_type ==R_ARM_THM_CALL))
2971 /* V5T and above. Stub starts with ARM code, so
2972 we must be able to switch mode before
2973 reaching it, which is only possible for 'bl'
2974 (ie R_ARM_THM_CALL relocation). */
cf3eccff 2975 ? arm_stub_long_branch_any_thumb_pic
ebe24dd4 2976 /* On V4T, use Thumb code only. */
d3626fb0 2977 : arm_stub_long_branch_v4t_thumb_thumb_pic)
c2b4a39d
CL		 2978
2979 /* non-PIC stubs. */
155d87d7
CL		 2980 : ((globals->use_blx
2981 && (r_type ==R_ARM_THM_CALL))
c2b4a39d
CL		 2982 /* V5T and above. */
2983 ? arm_stub_long_branch_any_any
2984 /* V4T. */
d3626fb0 2985 : arm_stub_long_branch_v4t_thumb_thumb);
906e58ca
NC		 2986 }
2987 else
2988 {
2989 stub_type = (info->shared | globals->pic_veneer)
ebe24dd4
CL		 2990 /* PIC stub. */
2991 ? arm_stub_long_branch_thumb_only_pic
c2b4a39d
CL		 2992 /* non-PIC stub. */
2993 : arm_stub_long_branch_thumb_only;
906e58ca
NC		 2994 }
2995 }
2996 else
2997 {
2998 /* Thumb to arm. */
c820be07
NC		 2999 if (sym_sec != NULL
3000 && sym_sec->owner != NULL
3001 && !INTERWORK_FLAG (sym_sec->owner))
3002 {
3003 (*_bfd_error_handler)
3004 (_("%B(%s): warning: interworking not enabled.\n"
3005 " first occurrence: %B: Thumb call to ARM"),
3006 sym_sec->owner, input_bfd, name);
3007 }
3008
906e58ca 3009 stub_type = (info->shared | globals->pic_veneer)
c2b4a39d 3010 /* PIC stubs. */
155d87d7
CL		 3011 ? ((globals->use_blx
3012 && (r_type ==R_ARM_THM_CALL))
c2b4a39d 3013 /* V5T and above. */
cf3eccff 3014 ? arm_stub_long_branch_any_arm_pic
ebe24dd4
CL		 3015 /* V4T PIC stub. */
3016 : arm_stub_long_branch_v4t_thumb_arm_pic)
c2b4a39d
CL		 3017
3018 /* non-PIC stubs. */
155d87d7
CL		 3019 : ((globals->use_blx
3020 && (r_type ==R_ARM_THM_CALL))
c2b4a39d
CL		 3021 /* V5T and above. */
3022 ? arm_stub_long_branch_any_any
3023 /* V4T. */
3024 : arm_stub_long_branch_v4t_thumb_arm);
c820be07
NC		 3025
3026 /* Handle v4t short branches. */
fea2b4d6 3027 if ((stub_type == arm_stub_long_branch_v4t_thumb_arm)
c820be07
NC		 3028 && (branch_offset <= THM_MAX_FWD_BRANCH_OFFSET)
3029 && (branch_offset >= THM_MAX_BWD_BRANCH_OFFSET))
fea2b4d6 3030 stub_type = arm_stub_short_branch_v4t_thumb_arm;
906e58ca
NC		 3031 }
3032 }
3033 }
155d87d7 3034 else if (r_type == R_ARM_CALL || r_type == R_ARM_JUMP24 || r_type == R_ARM_PLT32)
906e58ca
NC		 3035 {
3036 if (st_type == STT_ARM_TFUNC)
3037 {
3038 /* Arm to thumb. */
c820be07
NC		 3039
3040 if (sym_sec != NULL
3041 && sym_sec->owner != NULL
3042 && !INTERWORK_FLAG (sym_sec->owner))
3043 {
3044 (*_bfd_error_handler)
3045 (_("%B(%s): warning: interworking not enabled.\n"
c2b4a39d 3046 " first occurrence: %B: ARM call to Thumb"),
c820be07
NC		 3047 sym_sec->owner, input_bfd, name);
3048 }
3049
3050 /* We have an extra 2-bytes reach because of
3051 the mode change (bit 24 (H) of BLX encoding). */
906e58ca
NC		 3052 if (branch_offset > (ARM_MAX_FWD_BRANCH_OFFSET + 2)
3053 || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET)
155d87d7
CL		 3054 || ((r_type == R_ARM_CALL) && !globals->use_blx)
3055 || (r_type == R_ARM_JUMP24)
3056 || (r_type == R_ARM_PLT32))
906e58ca
NC		 3057 {
3058 stub_type = (info->shared | globals->pic_veneer)
c2b4a39d 3059 /* PIC stubs. */
ebe24dd4
CL		 3060 ? ((globals->use_blx)
3061 /* V5T and above. */
3062 ? arm_stub_long_branch_any_thumb_pic
3063 /* V4T stub. */
3064 : arm_stub_long_branch_v4t_arm_thumb_pic)
3065
c2b4a39d
CL		 3066 /* non-PIC stubs. */
3067 : ((globals->use_blx)
3068 /* V5T and above. */
3069 ? arm_stub_long_branch_any_any
3070 /* V4T. */
3071 : arm_stub_long_branch_v4t_arm_thumb);
906e58ca
NC		 3072 }
3073 }
3074 else
3075 {
3076 /* Arm to arm. */
3077 if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET
3078 || (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET))
3079 {
3080 stub_type = (info->shared | globals->pic_veneer)
c2b4a39d 3081 /* PIC stubs. */
cf3eccff 3082 ? arm_stub_long_branch_any_arm_pic
c2b4a39d 3083 /* non-PIC stubs. */
fea2b4d6 3084 : arm_stub_long_branch_any_any;
906e58ca
NC		 3085 }
3086 }
3087 }
3088
3089 return stub_type;
3090}
3091
3092/* Build a name for an entry in the stub hash table. */
3093
3094static char *
3095elf32_arm_stub_name (const asection *input_section,
3096 const asection *sym_sec,
3097 const struct elf32_arm_link_hash_entry *hash,
3098 const Elf_Internal_Rela *rel)
3099{
3100 char *stub_name;
3101 bfd_size_type len;
3102
3103 if (hash)
3104 {
3105 len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 8 + 1;
3106 stub_name = bfd_malloc (len);
3107 if (stub_name != NULL)
3108 sprintf (stub_name, "%08x_%s+%x",
3109 input_section->id & 0xffffffff,
3110 hash->root.root.root.string,
3111 (int) rel->r_addend & 0xffffffff);
3112 }
3113 else
3114 {
3115 len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3116 stub_name = bfd_malloc (len);
3117 if (stub_name != NULL)
3118 sprintf (stub_name, "%08x_%x:%x+%x",
3119 input_section->id & 0xffffffff,
3120 sym_sec->id & 0xffffffff,
3121 (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
3122 (int) rel->r_addend & 0xffffffff);
3123 }
3124
3125 return stub_name;
3126}
3127
3128/* Look up an entry in the stub hash. Stub entries are cached because
3129 creating the stub name takes a bit of time. */
3130
3131static struct elf32_arm_stub_hash_entry *
3132elf32_arm_get_stub_entry (const asection *input_section,
3133 const asection *sym_sec,
3134 struct elf_link_hash_entry *hash,
3135 const Elf_Internal_Rela *rel,
3136 struct elf32_arm_link_hash_table *htab)
3137{
3138 struct elf32_arm_stub_hash_entry *stub_entry;
3139 struct elf32_arm_link_hash_entry *h = (struct elf32_arm_link_hash_entry *) hash;
3140 const asection *id_sec;
3141
3142 if ((input_section->flags & SEC_CODE) == 0)
3143 return NULL;
3144
3145 /* If this input section is part of a group of sections sharing one
3146 stub section, then use the id of the first section in the group.
3147 Stub names need to include a section id, as there may well be
3148 more than one stub used to reach say, printf, and we need to
3149 distinguish between them. */
3150 id_sec = htab->stub_group[input_section->id].link_sec;
3151
3152 if (h != NULL && h->stub_cache != NULL
3153 && h->stub_cache->h == h
3154 && h->stub_cache->id_sec == id_sec)
3155 {
3156 stub_entry = h->stub_cache;
3157 }
3158 else
3159 {
3160 char *stub_name;
3161
3162 stub_name = elf32_arm_stub_name (id_sec, sym_sec, h, rel);
3163 if (stub_name == NULL)
3164 return NULL;
3165
3166 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table,
3167 stub_name, FALSE, FALSE);
3168 if (h != NULL)
3169 h->stub_cache = stub_entry;
3170
3171 free (stub_name);
3172 }
3173
3174 return stub_entry;
3175}
3176
906e58ca
NC		 3177/* Add a new stub entry to the stub hash. Not all fields of the new
3178 stub entry are initialised. */
3179
3180static struct elf32_arm_stub_hash_entry *
3181elf32_arm_add_stub (const char *stub_name,
3182 asection *section,
da5938a2 3183 struct elf32_arm_link_hash_table *htab)
906e58ca
NC		 3184{
3185 asection *link_sec;
3186 asection *stub_sec;
3187 struct elf32_arm_stub_hash_entry *stub_entry;
3188
3189 link_sec = htab->stub_group[section->id].link_sec;
3190 stub_sec = htab->stub_group[section->id].stub_sec;
3191 if (stub_sec == NULL)
3192 {
3193 stub_sec = htab->stub_group[link_sec->id].stub_sec;
3194 if (stub_sec == NULL)
3195 {
3196 size_t namelen;
3197 bfd_size_type len;
3198 char *s_name;
3199
3200 namelen = strlen (link_sec->name);
3201 len = namelen + sizeof (STUB_SUFFIX);
3202 s_name = bfd_alloc (htab->stub_bfd, len);
3203 if (s_name == NULL)
3204 return NULL;
3205
3206 memcpy (s_name, link_sec->name, namelen);
3207 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
3208 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
3209 if (stub_sec == NULL)
3210 return NULL;
3211 htab->stub_group[link_sec->id].stub_sec = stub_sec;
3212 }
3213 htab->stub_group[section->id].stub_sec = stub_sec;
3214 }
3215
3216 /* Enter this entry into the linker stub hash table. */
3217 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name,
3218 TRUE, FALSE);
3219 if (stub_entry == NULL)
3220 {
3221 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
3222 section->owner,
3223 stub_name);
3224 return NULL;
3225 }
3226
3227 stub_entry->stub_sec = stub_sec;
3228 stub_entry->stub_offset = 0;
3229 stub_entry->id_sec = link_sec;
3230
906e58ca
NC		 3231 return stub_entry;
3232}
3233
3234/* Store an Arm insn into an output section not processed by
3235 elf32_arm_write_section. */
3236
3237static void
8029a119
NC		 3238put_arm_insn (struct elf32_arm_link_hash_table * htab,
3239 bfd * output_bfd, bfd_vma val, void * ptr)
906e58ca
NC		 3240{
3241 if (htab->byteswap_code != bfd_little_endian (output_bfd))
3242 bfd_putl32 (val, ptr);
3243 else
3244 bfd_putb32 (val, ptr);
3245}
3246
3247/* Store a 16-bit Thumb insn into an output section not processed by
3248 elf32_arm_write_section. */
3249
3250static void
8029a119
NC		 3251put_thumb_insn (struct elf32_arm_link_hash_table * htab,
3252 bfd * output_bfd, bfd_vma val, void * ptr)
906e58ca
NC		 3253{
3254 if (htab->byteswap_code != bfd_little_endian (output_bfd))
3255 bfd_putl16 (val, ptr);
3256 else
3257 bfd_putb16 (val, ptr);
3258}
3259
3260static bfd_boolean
3261arm_build_one_stub (struct bfd_hash_entry *gen_entry,
3262 void * in_arg)
3263{
3264 struct elf32_arm_stub_hash_entry *stub_entry;
3265 struct bfd_link_info *info;
3266 struct elf32_arm_link_hash_table *htab;
3267 asection *stub_sec;
3268 bfd *stub_bfd;
3269 bfd_vma stub_addr;
3270 bfd_byte *loc;
3271 bfd_vma sym_value;
3272 int template_size;
3273 int size;
461a49ca 3274 const insn_sequence *template;
906e58ca
NC		 3275 int i;
3276 struct elf32_arm_link_hash_table * globals;
461a49ca 3277 int stub_reloc_idx = -1;
4e31c731 3278 int stub_reloc_offset = 0;
906e58ca
NC		 3279
3280 /* Massage our args to the form they really have. */
3281 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
3282 info = (struct bfd_link_info *) in_arg;
3283
3284 globals = elf32_arm_hash_table (info);
3285
3286 htab = elf32_arm_hash_table (info);
3287 stub_sec = stub_entry->stub_sec;
3288
3289 /* Make a note of the offset within the stubs for this entry. */
3290 stub_entry->stub_offset = stub_sec->size;
3291 loc = stub_sec->contents + stub_entry->stub_offset;
3292
3293 stub_bfd = stub_sec->owner;
3294
3295 /* This is the address of the start of the stub. */
3296 stub_addr = stub_sec->output_section->vma + stub_sec->output_offset
3297 + stub_entry->stub_offset;
3298
3299 /* This is the address of the stub destination. */
3300 sym_value = (stub_entry->target_value
3301 + stub_entry->target_section->output_offset
3302 + stub_entry->target_section->output_section->vma);
3303
461a49ca
DJ		 3304 template = stub_entry->stub_template;
3305 template_size = stub_entry->stub_template_size;
906e58ca
NC		 3306
3307 size = 0;
461a49ca 3308 for (i = 0; i < template_size; i++)
906e58ca 3309 {
4e31c731 3310 switch (template[i].type)
461a49ca
DJ		 3311 {
3312 case THUMB16_TYPE:
3313 put_thumb_insn (globals, stub_bfd, template[i].data, loc + size);
3314 size += 2;
3315 break;
906e58ca 3316
461a49ca
DJ		 3317 case ARM_TYPE:
3318 put_arm_insn (globals, stub_bfd, template[i].data, loc + size);
3319 /* Handle cases where the target is encoded within the
3320 instruction. */
ebe24dd4 3321 if (template[i].r_type == R_ARM_JUMP24)
461a49ca
DJ		 3322 {
3323 stub_reloc_idx = i;
3324 stub_reloc_offset = size;
3325 }
3326 size += 4;
3327 break;
3328
3329 case DATA_TYPE:
3330 bfd_put_32 (stub_bfd, template[i].data, loc + size);
3331 stub_reloc_idx = i;
3332 stub_reloc_offset = size;
3333 size += 4;
3334 break;
3335
3336 default:
3337 BFD_FAIL ();
3338 return FALSE;
3339 }
906e58ca 3340 }
461a49ca 3341
906e58ca
NC		 3342 stub_sec->size += size;
3343
461a49ca
DJ		 3344 /* Stub size has already been computed in arm_size_one_stub. Check
3345 consistency. */
3346 BFD_ASSERT (size == stub_entry->stub_size);
3347
906e58ca
NC		 3348 /* Destination is Thumb. Force bit 0 to 1 to reflect this. */
3349 if (stub_entry->st_type == STT_ARM_TFUNC)
3350 sym_value |= 1;
3351
461a49ca
DJ		 3352 /* Assume there is one and only one entry to relocate in each stub. */
3353 BFD_ASSERT (stub_reloc_idx != -1);
c820be07 3354
ebe24dd4 3355 _bfd_final_link_relocate (elf32_arm_howto_from_type (template[stub_reloc_idx].r_type),
461a49ca
DJ		 3356 stub_bfd, stub_sec, stub_sec->contents,
3357 stub_entry->stub_offset + stub_reloc_offset,
3358 sym_value, template[stub_reloc_idx].reloc_addend);
906e58ca
NC		 3359
3360 return TRUE;
3361}
3362
3363/* As above, but don't actually build the stub. Just bump offset so
3364 we know stub section sizes. */
3365
3366static bfd_boolean
3367arm_size_one_stub (struct bfd_hash_entry *gen_entry,
3368 void * in_arg)
3369{
3370 struct elf32_arm_stub_hash_entry *stub_entry;
3371 struct elf32_arm_link_hash_table *htab;
461a49ca 3372 const insn_sequence *template;
906e58ca
NC		 3373 int template_size;
3374 int size;
3375 int i;
3376
3377 /* Massage our args to the form they really have. */
3378 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
3379 htab = (struct elf32_arm_link_hash_table *) in_arg;
3380
738a79f6
CL		 3381 BFD_ASSERT((stub_entry->stub_type > arm_stub_none)
3382 && stub_entry->stub_type < ARRAY_SIZE(stub_definitions));
3383
3384 template = stub_definitions[stub_entry->stub_type].template;
3385 template_size = stub_definitions[stub_entry->stub_type].template_size;
906e58ca
NC		 3386
3387 size = 0;
461a49ca
DJ		 3388 for (i = 0; i < template_size; i++)
3389 {
4e31c731 3390 switch (template[i].type)
461a49ca
DJ		 3391 {
3392 case THUMB16_TYPE:
3393 size += 2;
3394 break;
3395
3396 case ARM_TYPE:
3397 size += 4;
3398 break;
3399
3400 case DATA_TYPE:
3401 size += 4;
3402 break;
3403
3404 default:
3405 BFD_FAIL ();
3406 return FALSE;
3407 }
3408 }
3409
3410 stub_entry->stub_size = size;
3411 stub_entry->stub_template = template;
3412 stub_entry->stub_template_size = template_size;
3413
906e58ca
NC		 3414 size = (size + 7) & ~7;
3415 stub_entry->stub_sec->size += size;
461a49ca 3416
906e58ca
NC		 3417 return TRUE;
3418}
3419
3420/* External entry points for sizing and building linker stubs. */
3421
3422/* Set up various things so that we can make a list of input sections
3423 for each output section included in the link. Returns -1 on error,
3424 0 when no stubs will be needed, and 1 on success. */
3425
3426int
3427elf32_arm_setup_section_lists (bfd *output_bfd,
3428 struct bfd_link_info *info)
3429{
3430 bfd *input_bfd;
3431 unsigned int bfd_count;
3432 int top_id, top_index;
3433 asection *section;
3434 asection **input_list, **list;
3435 bfd_size_type amt;
3436 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3437
3438 if (! is_elf_hash_table (htab))
3439 return 0;
3440
3441 /* Count the number of input BFDs and find the top input section id. */
3442 for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
3443 input_bfd != NULL;
3444 input_bfd = input_bfd->link_next)
3445 {
3446 bfd_count += 1;
3447 for (section = input_bfd->sections;
3448 section != NULL;
3449 section = section->next)
3450 {
3451 if (top_id < section->id)
3452 top_id = section->id;
3453 }
3454 }
3455 htab->bfd_count = bfd_count;
3456
3457 amt = sizeof (struct map_stub) * (top_id + 1);
3458 htab->stub_group = bfd_zmalloc (amt);
3459 if (htab->stub_group == NULL)
3460 return -1;
3461
3462 /* We can't use output_bfd->section_count here to find the top output
3463 section index as some sections may have been removed, and
3464 _bfd_strip_section_from_output doesn't renumber the indices. */
3465 for (section = output_bfd->sections, top_index = 0;
3466 section != NULL;
3467 section = section->next)
3468 {
3469 if (top_index < section->index)
3470 top_index = section->index;
3471 }
3472
3473 htab->top_index = top_index;
3474 amt = sizeof (asection *) * (top_index + 1);
3475 input_list = bfd_malloc (amt);
3476 htab->input_list = input_list;
3477 if (input_list == NULL)
3478 return -1;
3479
3480 /* For sections we aren't interested in, mark their entries with a
3481 value we can check later. */
3482 list = input_list + top_index;
3483 do
3484 *list = bfd_abs_section_ptr;
3485 while (list-- != input_list);
3486
3487 for (section = output_bfd->sections;
3488 section != NULL;
3489 section = section->next)
3490 {
3491 if ((section->flags & SEC_CODE) != 0)
3492 input_list[section->index] = NULL;
3493 }
3494
3495 return 1;
3496}
3497
3498/* The linker repeatedly calls this function for each input section,
3499 in the order that input sections are linked into output sections.
3500 Build lists of input sections to determine groupings between which
3501 we may insert linker stubs. */
3502
3503void
3504elf32_arm_next_input_section (struct bfd_link_info *info,
3505 asection *isec)
3506{
3507 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3508
3509 if (isec->output_section->index <= htab->top_index)
3510 {
3511 asection **list = htab->input_list + isec->output_section->index;
3512
3513 if (*list != bfd_abs_section_ptr)
3514 {
3515 /* Steal the link_sec pointer for our list. */
3516#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
3517 /* This happens to make the list in reverse order,
07d72278 3518 which we reverse later. */
906e58ca
NC		 3519 PREV_SEC (isec) = *list;
3520 *list = isec;
3521 }
3522 }
3523}
3524
3525/* See whether we can group stub sections together. Grouping stub
3526 sections may result in fewer stubs. More importantly, we need to
07d72278 3527 put all .init* and .fini* stubs at the end of the .init or
906e58ca
NC		 3528 .fini output sections respectively, because glibc splits the
3529 _init and _fini functions into multiple parts. Putting a stub in
3530 the middle of a function is not a good idea. */
3531
3532static void
3533group_sections (struct elf32_arm_link_hash_table *htab,
3534 bfd_size_type stub_group_size,
07d72278 3535 bfd_boolean stubs_always_after_branch)
906e58ca 3536{
07d72278 3537 asection **list = htab->input_list;
906e58ca
NC		 3538
3539 do
3540 {
3541 asection *tail = *list;
07d72278 3542 asection *head;
906e58ca
NC		 3543
3544 if (tail == bfd_abs_section_ptr)
3545 continue;
3546
07d72278
DJ		 3547 /* Reverse the list: we must avoid placing stubs at the
3548 beginning of the section because the beginning of the text
3549 section may be required for an interrupt vector in bare metal
3550 code. */
3551#define NEXT_SEC PREV_SEC
e780aef2
CL		 3552 head = NULL;
3553 while (tail != NULL)
3554 {
3555 /* Pop from tail. */
3556 asection *item = tail;
3557 tail = PREV_SEC (item);
3558
3559 /* Push on head. */
3560 NEXT_SEC (item) = head;
3561 head = item;
3562 }
07d72278
DJ		 3563
3564 while (head != NULL)
906e58ca
NC		 3565 {
3566 asection *curr;
07d72278 3567 asection *next;
e780aef2
CL		 3568 bfd_vma stub_group_start = head->output_offset;
3569 bfd_vma end_of_next;
906e58ca 3570
07d72278 3571 curr = head;
e780aef2 3572 while (NEXT_SEC (curr) != NULL)
8cd931b7 3573 {
e780aef2
CL		 3574 next = NEXT_SEC (curr);
3575 end_of_next = next->output_offset + next->size;
3576 if (end_of_next - stub_group_start >= stub_group_size)
3577 /* End of NEXT is too far from start, so stop. */
8cd931b7 3578 break;
e780aef2
CL		 3579 /* Add NEXT to the group. */
3580 curr = next;
8cd931b7 3581 }
906e58ca 3582
07d72278 3583 /* OK, the size from the start to the start of CURR is less
906e58ca 3584 than stub_group_size and thus can be handled by one stub
07d72278 3585 section. (Or the head section is itself larger than
906e58ca
NC		 3586 stub_group_size, in which case we may be toast.)
3587 We should really be keeping track of the total size of
3588 stubs added here, as stubs contribute to the final output
7fb9f789 3589 section size. */
906e58ca
NC		 3590 do
3591 {
07d72278 3592 next = NEXT_SEC (head);
906e58ca 3593 /* Set up this stub group. */
07d72278 3594 htab->stub_group[head->id].link_sec = curr;
906e58ca 3595 }
07d72278 3596 while (head != curr && (head = next) != NULL);
906e58ca
NC		 3597
3598 /* But wait, there's more! Input sections up to stub_group_size
07d72278
DJ		 3599 bytes after the stub section can be handled by it too. */
3600 if (!stubs_always_after_branch)
906e58ca 3601 {
e780aef2
CL		 3602 stub_group_start = curr->output_offset + curr->size;
3603
8cd931b7 3604 while (next != NULL)
906e58ca 3605 {
e780aef2
CL		 3606 end_of_next = next->output_offset + next->size;
3607 if (end_of_next - stub_group_start >= stub_group_size)
3608 /* End of NEXT is too far from stubs, so stop. */
8cd931b7 3609 break;
e780aef2 3610 /* Add NEXT to the stub group. */
07d72278
DJ		 3611 head = next;
3612 next = NEXT_SEC (head);
3613 htab->stub_group[head->id].link_sec = curr;
906e58ca
NC		 3614 }
3615 }
07d72278 3616 head = next;
906e58ca
NC		 3617 }
3618 }
07d72278 3619 while (list++ != htab->input_list + htab->top_index);
906e58ca
NC		 3620
3621 free (htab->input_list);
3622#undef PREV_SEC
07d72278 3623#undef NEXT_SEC
906e58ca
NC		 3624}
3625
3626/* Determine and set the size of the stub section for a final link.
3627
3628 The basic idea here is to examine all the relocations looking for
3629 PC-relative calls to a target that is unreachable with a "bl"
3630 instruction. */
3631
3632bfd_boolean
3633elf32_arm_size_stubs (bfd *output_bfd,
3634 bfd *stub_bfd,
3635 struct bfd_link_info *info,
3636 bfd_signed_vma group_size,
3637 asection * (*add_stub_section) (const char *, asection *),
3638 void (*layout_sections_again) (void))
3639{
3640 bfd_size_type stub_group_size;
07d72278 3641 bfd_boolean stubs_always_after_branch;
906e58ca
NC		 3642 bfd_boolean stub_changed = 0;
3643 struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
3644
3645 /* Propagate mach to stub bfd, because it may not have been
3646 finalized when we created stub_bfd. */
3647 bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
3648 bfd_get_mach (output_bfd));
3649
3650 /* Stash our params away. */
3651 htab->stub_bfd = stub_bfd;
3652 htab->add_stub_section = add_stub_section;
3653 htab->layout_sections_again = layout_sections_again;
07d72278 3654 stubs_always_after_branch = group_size < 0;
906e58ca
NC		 3655 if (group_size < 0)
3656 stub_group_size = -group_size;
3657 else
3658 stub_group_size = group_size;
3659
3660 if (stub_group_size == 1)
3661 {
3662 /* Default values. */
3663 /* Thumb branch range is +-4MB has to be used as the default
3664 maximum size (a given section can contain both ARM and Thumb
3665 code, so the worst case has to be taken into account).
3666
3667 This value is 24K less than that, which allows for 2025
3668 12-byte stubs. If we exceed that, then we will fail to link.
3669 The user will have to relink with an explicit group size
3670 option. */
3671 stub_group_size = 4170000;
3672 }
3673
07d72278 3674 group_sections (htab, stub_group_size, stubs_always_after_branch);
906e58ca
NC		 3675
3676 while (1)
3677 {
3678 bfd *input_bfd;
3679 unsigned int bfd_indx;
3680 asection *stub_sec;
3681
3682 for (input_bfd = info->input_bfds, bfd_indx = 0;
3683 input_bfd != NULL;
3684 input_bfd = input_bfd->link_next, bfd_indx++)
3685 {
3686 Elf_Internal_Shdr *symtab_hdr;
3687 asection *section;
3688 Elf_Internal_Sym *local_syms = NULL;
3689
3690 /* We'll need the symbol table in a second. */
3691 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
3692 if (symtab_hdr->sh_info == 0)
3693 continue;
3694
3695 /* Walk over each section attached to the input bfd. */
3696 for (section = input_bfd->sections;
3697 section != NULL;
3698 section = section->next)
3699 {
3700 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
3701
3702 /* If there aren't any relocs, then there's nothing more
3703 to do. */
3704 if ((section->flags & SEC_RELOC) == 0
3705 || section->reloc_count == 0
3706 || (section->flags & SEC_CODE) == 0)
3707 continue;
3708
3709 /* If this section is a link-once section that will be
3710 discarded, then don't create any stubs. */
3711 if (section->output_section == NULL
3712 || section->output_section->owner != output_bfd)
3713 continue;
3714
3715 /* Get the relocs. */
3716 internal_relocs
3717 = _bfd_elf_link_read_relocs (input_bfd, section, NULL,
3718 NULL, info->keep_memory);
3719 if (internal_relocs == NULL)
3720 goto error_ret_free_local;
3721
3722 /* Now examine each relocation. */
3723 irela = internal_relocs;
3724 irelaend = irela + section->reloc_count;
3725 for (; irela < irelaend; irela++)
3726 {
3727 unsigned int r_type, r_indx;
3728 enum elf32_arm_stub_type stub_type;
3729 struct elf32_arm_stub_hash_entry *stub_entry;
3730 asection *sym_sec;
3731 bfd_vma sym_value;
3732 bfd_vma destination;
3733 struct elf32_arm_link_hash_entry *hash;
7413f23f 3734 const char *sym_name;
906e58ca
NC		 3735 char *stub_name;
3736 const asection *id_sec;
3737 unsigned char st_type;
3738
3739 r_type = ELF32_R_TYPE (irela->r_info);
3740 r_indx = ELF32_R_SYM (irela->r_info);
3741
3742 if (r_type >= (unsigned int) R_ARM_max)
3743 {
3744 bfd_set_error (bfd_error_bad_value);
3745 error_ret_free_internal:
3746 if (elf_section_data (section)->relocs == NULL)
3747 free (internal_relocs);
3748 goto error_ret_free_local;
3749 }
3750
155d87d7 3751 /* Only look for stubs on branch instructions. */
906e58ca 3752 if ((r_type != (unsigned int) R_ARM_CALL)
155d87d7
CL		 3753 && (r_type != (unsigned int) R_ARM_THM_CALL)
3754 && (r_type != (unsigned int) R_ARM_JUMP24)
3755 && (r_type != (unsigned int) R_ARM_THM_JUMP24)
3756 && (r_type != (unsigned int) R_ARM_PLT32))
906e58ca
NC		 3757 continue;
3758
3759 /* Now determine the call target, its name, value,
3760 section. */
3761 sym_sec = NULL;
3762 sym_value = 0;
3763 destination = 0;
3764 hash = NULL;
7413f23f 3765 sym_name = NULL;
906e58ca
NC		 3766 if (r_indx < symtab_hdr->sh_info)
3767 {
3768 /* It's a local symbol. */
3769 Elf_Internal_Sym *sym;
3770 Elf_Internal_Shdr *hdr;
3771
3772 if (local_syms == NULL)
3773 {
3774 local_syms
3775 = (Elf_Internal_Sym *) symtab_hdr->contents;
3776 if (local_syms == NULL)
3777 local_syms
3778 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
3779 symtab_hdr->sh_info, 0,
3780 NULL, NULL, NULL);
3781 if (local_syms == NULL)
3782 goto error_ret_free_internal;
3783 }
3784
3785 sym = local_syms + r_indx;
3786 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
3787 sym_sec = hdr->bfd_section;
3788 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
3789 sym_value = sym->st_value;
3790 destination = (sym_value + irela->r_addend
3791 + sym_sec->output_offset
3792 + sym_sec->output_section->vma);
3793 st_type = ELF_ST_TYPE (sym->st_info);
7413f23f
DJ		 3794 sym_name
3795 = bfd_elf_string_from_elf_section (input_bfd,
3796 symtab_hdr->sh_link,
3797 sym->st_name);
906e58ca
NC		 3798 }
3799 else
3800 {
3801 /* It's an external symbol. */
3802 int e_indx;
3803
3804 e_indx = r_indx - symtab_hdr->sh_info;
3805 hash = ((struct elf32_arm_link_hash_entry *)
3806 elf_sym_hashes (input_bfd)[e_indx]);
3807
3808 while (hash->root.root.type == bfd_link_hash_indirect
3809 || hash->root.root.type == bfd_link_hash_warning)
3810 hash = ((struct elf32_arm_link_hash_entry *)
3811 hash->root.root.u.i.link);
3812
3813 if (hash->root.root.type == bfd_link_hash_defined
3814 || hash->root.root.type == bfd_link_hash_defweak)
3815 {
3816 sym_sec = hash->root.root.u.def.section;
3817 sym_value = hash->root.root.u.def.value;
3818 if (sym_sec->output_section != NULL)
3819 destination = (sym_value + irela->r_addend
3820 + sym_sec->output_offset
3821 + sym_sec->output_section->vma);
3822 }
69c5861e
CL		 3823 else if ((hash->root.root.type == bfd_link_hash_undefined)
3824 || (hash->root.root.type == bfd_link_hash_undefweak))
3825 {
3826 /* For a shared library, use the PLT stub as
3827 target address to decide whether a long
3828 branch stub is needed.
3829 For absolute code, they cannot be handled. */
3830 struct elf32_arm_link_hash_table *globals =
3831 elf32_arm_hash_table (info);
3832
3833 if (globals->splt != NULL && hash != NULL
3834 && hash->root.plt.offset != (bfd_vma) -1)
3835 {
3836 sym_sec = globals->splt;
3837 sym_value = hash->root.plt.offset;
3838 if (sym_sec->output_section != NULL)
3839 destination = (sym_value
3840 + sym_sec->output_offset
3841 + sym_sec->output_section->vma);
3842 }
3843 else
3844 continue;
3845 }
906e58ca
NC		 3846 else
3847 {
3848 bfd_set_error (bfd_error_bad_value);
3849 goto error_ret_free_internal;
3850 }
3851 st_type = ELF_ST_TYPE (hash->root.type);
7413f23f 3852 sym_name = hash->root.root.root.string;
906e58ca
NC		 3853 }
3854
3855 /* Determine what (if any) linker stub is needed. */
3856 stub_type = arm_type_of_stub (info, section, irela, st_type,
c820be07
NC		 3857 hash, destination, sym_sec,
3858 input_bfd, sym_name);
906e58ca
NC		 3859 if (stub_type == arm_stub_none)
3860 continue;
5e681ec4 3861
906e58ca
NC		 3862 /* Support for grouping stub sections. */
3863 id_sec = htab->stub_group[section->id].link_sec;
5e681ec4 3864
906e58ca
NC		 3865 /* Get the name of this stub. */
3866 stub_name = elf32_arm_stub_name (id_sec, sym_sec, hash, irela);
3867 if (!stub_name)
3868 goto error_ret_free_internal;
5e681ec4 3869
906e58ca
NC		 3870 stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table,
3871 stub_name,
3872 FALSE, FALSE);
3873 if (stub_entry != NULL)
3874 {
3875 /* The proper stub has already been created. */
3876 free (stub_name);
3877 continue;
3878 }
5e681ec4 3879
da5938a2 3880 stub_entry = elf32_arm_add_stub (stub_name, section, htab);
906e58ca
NC		 3881 if (stub_entry == NULL)
3882 {
3883 free (stub_name);
3884 goto error_ret_free_internal;
3885 }
5e681ec4 3886
906e58ca
NC		 3887 stub_entry->target_value = sym_value;
3888 stub_entry->target_section = sym_sec;
3889 stub_entry->stub_type = stub_type;
3890 stub_entry->h = hash;
3891 stub_entry->st_type = st_type;
7413f23f
DJ		 3892
3893 if (sym_name == NULL)
3894 sym_name = "unnamed";
3895 stub_entry->output_name
3896 = bfd_alloc (htab->stub_bfd,
3897 sizeof (THUMB2ARM_GLUE_ENTRY_NAME)
3898 + strlen (sym_name));
3899 if (stub_entry->output_name == NULL)
3900 {
3901 free (stub_name);
3902 goto error_ret_free_internal;
3903 }
3904
3905 /* For historical reasons, use the existing names for
3906 ARM-to-Thumb and Thumb-to-ARM stubs. */
155d87d7
CL		 3907 if ( ((r_type == (unsigned int) R_ARM_THM_CALL)
3908 || (r_type == (unsigned int) R_ARM_THM_JUMP24))
3909 && st_type != STT_ARM_TFUNC)
7413f23f
DJ		 3910 sprintf (stub_entry->output_name, THUMB2ARM_GLUE_ENTRY_NAME,
3911 sym_name);
155d87d7
CL		 3912 else if ( ((r_type == (unsigned int) R_ARM_CALL)
3913 || (r_type == (unsigned int) R_ARM_JUMP24))
7413f23f
DJ		 3914 && st_type == STT_ARM_TFUNC)
3915 sprintf (stub_entry->output_name, ARM2THUMB_GLUE_ENTRY_NAME,
3916 sym_name);
3917 else
3918 sprintf (stub_entry->output_name, STUB_ENTRY_NAME,
3919 sym_name);
3920
906e58ca
NC		 3921 stub_changed = TRUE;
3922 }
3923
3924 /* We're done with the internal relocs, free them. */
3925 if (elf_section_data (section)->relocs == NULL)
3926 free (internal_relocs);
5e681ec4 3927 }
5e681ec4
PB		 3928 }
3929
906e58ca
NC		 3930 if (!stub_changed)
3931 break;
5e681ec4 3932
906e58ca
NC		 3933 /* OK, we've added some stubs. Find out the new size of the
3934 stub sections. */
3935 for (stub_sec = htab->stub_bfd->sections;
3936 stub_sec != NULL;
3937 stub_sec = stub_sec->next)
3e6b1042
DJ		 3938 {
3939 /* Ignore non-stub sections. */
3940 if (!strstr (stub_sec->name, STUB_SUFFIX))
3941 continue;
3942
3943 stub_sec->size = 0;
3944 }
b34b2d70 3945
906e58ca
NC		 3946 bfd_hash_traverse (&htab->stub_hash_table, arm_size_one_stub, htab);
3947
3948 /* Ask the linker to do its stuff. */
3949 (*htab->layout_sections_again) ();
3950 stub_changed = FALSE;
ba93b8ac
DJ		 3951 }
3952
906e58ca
NC		 3953 return TRUE;
3954
3955 error_ret_free_local:
3956 return FALSE;
5e681ec4
PB		 3957}
3958
906e58ca
NC		 3959/* Build all the stubs associated with the current output file. The
3960 stubs are kept in a hash table attached to the main linker hash
3961 table. We also set up the .plt entries for statically linked PIC
3962 functions here. This function is called via arm_elf_finish in the
3963 linker. */
252b5132 3964
906e58ca
NC		 3965bfd_boolean
3966elf32_arm_build_stubs (struct bfd_link_info *info)
252b5132 3967{
906e58ca
NC		 3968 asection *stub_sec;
3969 struct bfd_hash_table *table;
3970 struct elf32_arm_link_hash_table *htab;
252b5132 3971
906e58ca 3972 htab = elf32_arm_hash_table (info);
252b5132 3973
906e58ca
NC		 3974 for (stub_sec = htab->stub_bfd->sections;
3975 stub_sec != NULL;
3976 stub_sec = stub_sec->next)
252b5132 3977 {
906e58ca
NC		 3978 bfd_size_type size;
3979
8029a119 3980 /* Ignore non-stub sections. */
906e58ca
NC		 3981 if (!strstr (stub_sec->name, STUB_SUFFIX))
3982 continue;
3983
3984 /* Allocate memory to hold the linker stubs. */
3985 size = stub_sec->size;
3986 stub_sec->contents = bfd_zalloc (htab->stub_bfd, size);
3987 if (stub_sec->contents == NULL && size != 0)
3988 return FALSE;
3989 stub_sec->size = 0;
252b5132
RH		 3990 }
3991
906e58ca
NC		 3992 /* Build the stubs as directed by the stub hash table. */
3993 table = &htab->stub_hash_table;
3994 bfd_hash_traverse (table, arm_build_one_stub, info);
252b5132 3995
906e58ca 3996 return TRUE;
252b5132
RH		 3997}
3998
9b485d32
NC		 3999/* Locate the Thumb encoded calling stub for NAME. */
4000
252b5132 4001static struct elf_link_hash_entry *
57e8b36a
NC		 4002find_thumb_glue (struct bfd_link_info *link_info,
4003 const char *name,
f2a9dd69 4004 char **error_message)
252b5132
RH		 4005{
4006 char *tmp_name;
4007 struct elf_link_hash_entry *hash;
4008 struct elf32_arm_link_hash_table *hash_table;
4009
4010 /* We need a pointer to the armelf specific hash table. */
4011 hash_table = elf32_arm_hash_table (link_info);
4012
57e8b36a
NC		 4013 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
4014 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 4015
4016 BFD_ASSERT (tmp_name);
4017
4018 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
4019
4020 hash = elf_link_hash_lookup
b34976b6 4021 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132 4022
b1657152
AM		 4023 if (hash == NULL
4024 && asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"),
4025 tmp_name, name) == -1)
4026 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
252b5132
RH		 4027
4028 free (tmp_name);
4029
4030 return hash;
4031}
4032
9b485d32
NC		 4033/* Locate the ARM encoded calling stub for NAME. */
4034
252b5132 4035static struct elf_link_hash_entry *
57e8b36a
NC		 4036find_arm_glue (struct bfd_link_info *link_info,
4037 const char *name,
f2a9dd69 4038 char **error_message)
252b5132
RH		 4039{
4040 char *tmp_name;
4041 struct elf_link_hash_entry *myh;
4042 struct elf32_arm_link_hash_table *hash_table;
4043
4044 /* We need a pointer to the elfarm specific hash table. */
4045 hash_table = elf32_arm_hash_table (link_info);
4046
57e8b36a
NC		 4047 tmp_name = bfd_malloc ((bfd_size_type) strlen (name)
4048 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 4049
4050 BFD_ASSERT (tmp_name);
4051
4052 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
4053
4054 myh = elf_link_hash_lookup
b34976b6 4055 (&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132 4056
b1657152
AM		 4057 if (myh == NULL
4058 && asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"),
4059 tmp_name, name) == -1)
4060 *error_message = (char *) bfd_errmsg (bfd_error_system_call);
252b5132
RH		 4061
4062 free (tmp_name);
4063
4064 return myh;
4065}
4066
8f6277f5 4067/* ARM->Thumb glue (static images):
252b5132
RH		 4068
4069 .arm
4070 __func_from_arm:
4071 ldr r12, __func_addr
4072 bx r12
4073 __func_addr:
906e58ca 4074 .word func @ behave as if you saw a ARM_32 reloc.
252b5132 4075
26079076
PB		 4076 (v5t static images)
4077 .arm
4078 __func_from_arm:
4079 ldr pc, __func_addr
4080 __func_addr:
906e58ca 4081 .word func @ behave as if you saw a ARM_32 reloc.
26079076 4082
8f6277f5
PB		 4083 (relocatable images)
4084 .arm
4085 __func_from_arm:
4086 ldr r12, __func_offset
4087 add r12, r12, pc
4088 bx r12
4089 __func_offset:
8029a119 4090 .word func - . */
8f6277f5
PB		 4091
4092#define ARM2THUMB_STATIC_GLUE_SIZE 12
252b5132
RH		 4093static const insn32 a2t1_ldr_insn = 0xe59fc000;
4094static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
4095static const insn32 a2t3_func_addr_insn = 0x00000001;
4096
26079076
PB		 4097#define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
4098static const insn32 a2t1v5_ldr_insn = 0xe51ff004;
4099static const insn32 a2t2v5_func_addr_insn = 0x00000001;
4100
8f6277f5
PB		 4101#define ARM2THUMB_PIC_GLUE_SIZE 16
4102static const insn32 a2t1p_ldr_insn = 0xe59fc004;
4103static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
4104static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
4105
9b485d32 4106/* Thumb->ARM: Thumb->(non-interworking aware) ARM
252b5132 4107
8029a119
NC		 4108 .thumb .thumb
4109 .align 2 .align 2
4110 __func_from_thumb: __func_from_thumb:
4111 bx pc push {r6, lr}
4112 nop ldr r6, __func_addr
4113 .arm mov lr, pc
4114 b func bx r6
fcef9eb7
NC		 4115 .arm
4116 ;; back_to_thumb
4117 ldmia r13! {r6, lr}
4118 bx lr
8029a119
NC		 4119 __func_addr:
4120 .word func */
252b5132
RH		 4121
4122#define THUMB2ARM_GLUE_SIZE 8
4123static const insn16 t2a1_bx_pc_insn = 0x4778;
4124static const insn16 t2a2_noop_insn = 0x46c0;
4125static const insn32 t2a3_b_insn = 0xea000000;
4126
c7b8f16e
JB		 4127#define VFP11_ERRATUM_VENEER_SIZE 8
4128
845b51d6
PB		 4129#define ARM_BX_VENEER_SIZE 12
4130static const insn32 armbx1_tst_insn = 0xe3100001;
4131static const insn32 armbx2_moveq_insn = 0x01a0f000;
4132static const insn32 armbx3_bx_insn = 0xe12fff10;
4133
7e392df6 4134#ifndef ELFARM_NABI_C_INCLUDED
8029a119
NC		 4135static void
4136arm_allocate_glue_section_space (bfd * abfd, bfd_size_type size, const char * name)
252b5132
RH		 4137{
4138 asection * s;
8029a119 4139 bfd_byte * contents;
252b5132 4140
8029a119 4141 if (size == 0)
3e6b1042
DJ		 4142 {
4143 /* Do not include empty glue sections in the output. */
4144 if (abfd != NULL)
4145 {
4146 s = bfd_get_section_by_name (abfd, name);
4147 if (s != NULL)
4148 s->flags |= SEC_EXCLUDE;
4149 }
4150 return;
4151 }
252b5132 4152
8029a119 4153 BFD_ASSERT (abfd != NULL);
252b5132 4154
8029a119
NC		 4155 s = bfd_get_section_by_name (abfd, name);
4156 BFD_ASSERT (s != NULL);
252b5132 4157
8029a119 4158 contents = bfd_alloc (abfd, size);
252b5132 4159
8029a119
NC		 4160 BFD_ASSERT (s->size == size);
4161 s->contents = contents;
4162}
906e58ca 4163
8029a119
NC		 4164bfd_boolean
4165bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
4166{
4167 struct elf32_arm_link_hash_table * globals;
906e58ca 4168
8029a119
NC		 4169 globals = elf32_arm_hash_table (info);
4170 BFD_ASSERT (globals != NULL);
906e58ca 4171
8029a119
NC		 4172 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
4173 globals->arm_glue_size,
4174 ARM2THUMB_GLUE_SECTION_NAME);
906e58ca 4175
8029a119
NC		 4176 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
4177 globals->thumb_glue_size,
4178 THUMB2ARM_GLUE_SECTION_NAME);
252b5132 4179
8029a119
NC		 4180 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
4181 globals->vfp11_erratum_glue_size,
4182 VFP11_ERRATUM_VENEER_SECTION_NAME);
845b51d6 4183
8029a119
NC		 4184 arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
4185 globals->bx_glue_size,
845b51d6
PB		 4186 ARM_BX_GLUE_SECTION_NAME);
4187
b34976b6 4188 return TRUE;
252b5132
RH		 4189}
4190
a4fd1a8e 4191/* Allocate space and symbols for calling a Thumb function from Arm mode.
906e58ca
NC		 4192 returns the symbol identifying the stub. */
4193
a4fd1a8e 4194static struct elf_link_hash_entry *
57e8b36a
NC		 4195record_arm_to_thumb_glue (struct bfd_link_info * link_info,
4196 struct elf_link_hash_entry * h)
252b5132
RH		 4197{
4198 const char * name = h->root.root.string;
63b0f745 4199 asection * s;
252b5132
RH		 4200 char * tmp_name;
4201 struct elf_link_hash_entry * myh;
14a793b2 4202 struct bfd_link_hash_entry * bh;
252b5132 4203 struct elf32_arm_link_hash_table * globals;
dc810e39 4204 bfd_vma val;
2f475487 4205 bfd_size_type size;
252b5132
RH		 4206
4207 globals = elf32_arm_hash_table (link_info);
4208
4209 BFD_ASSERT (globals != NULL);
4210 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4211
4212 s = bfd_get_section_by_name
4213 (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
4214
252b5132
RH		 4215 BFD_ASSERT (s != NULL);
4216
57e8b36a 4217 tmp_name = bfd_malloc ((bfd_size_type) strlen (name) + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 4218
4219 BFD_ASSERT (tmp_name);
4220
4221 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
4222
4223 myh = elf_link_hash_lookup
b34976b6 4224 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
252b5132
RH		 4225
4226 if (myh != NULL)
4227 {
9b485d32 4228 /* We've already seen this guy. */
252b5132 4229 free (tmp_name);
a4fd1a8e 4230 return myh;
252b5132
RH		 4231 }
4232
57e8b36a
NC		 4233 /* The only trick here is using hash_table->arm_glue_size as the value.
4234 Even though the section isn't allocated yet, this is where we will be
3dccd7b7
DJ		 4235 putting it. The +1 on the value marks that the stub has not been
4236 output yet - not that it is a Thumb function. */
14a793b2 4237 bh = NULL;
dc810e39
AM		 4238 val = globals->arm_glue_size + 1;
4239 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
4240 tmp_name, BSF_GLOBAL, s, val,
b34976b6 4241 NULL, TRUE, FALSE, &bh);
252b5132 4242
b7693d02
DJ		 4243 myh = (struct elf_link_hash_entry *) bh;
4244 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4245 myh->forced_local = 1;
4246
252b5132
RH		 4247 free (tmp_name);
4248
27e55c4d
PB		 4249 if (link_info->shared || globals->root.is_relocatable_executable
4250 || globals->pic_veneer)
2f475487 4251 size = ARM2THUMB_PIC_GLUE_SIZE;
26079076
PB		 4252 else if (globals->use_blx)
4253 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
8f6277f5 4254 else
2f475487
AM		 4255 size = ARM2THUMB_STATIC_GLUE_SIZE;
4256
4257 s->size += size;
4258 globals->arm_glue_size += size;
252b5132 4259
a4fd1a8e 4260 return myh;
252b5132
RH		 4261}
4262
845b51d6
PB		 4263/* Allocate space for ARMv4 BX veneers. */
4264
4265static void
4266record_arm_bx_glue (struct bfd_link_info * link_info, int reg)
4267{
4268 asection * s;
4269 struct elf32_arm_link_hash_table *globals;
4270 char *tmp_name;
4271 struct elf_link_hash_entry *myh;
4272 struct bfd_link_hash_entry *bh;
4273 bfd_vma val;
4274
4275 /* BX PC does not need a veneer. */
4276 if (reg == 15)
4277 return;
4278
4279 globals = elf32_arm_hash_table (link_info);
4280
4281 BFD_ASSERT (globals != NULL);
4282 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
4283
4284 /* Check if this veneer has already been allocated. */
4285 if (globals->bx_glue_offset[reg])
4286 return;
4287
4288 s = bfd_get_section_by_name
4289 (globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME);
4290
4291 BFD_ASSERT (s != NULL);
4292
4293 /* Add symbol for veneer. */
4294 tmp_name = bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1);
906e58ca 4295
845b51d6 4296 BFD_ASSERT (tmp_name);
906e58ca 4297
845b51d6 4298 sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg);
906e58ca 4299
845b51d6
PB		 4300 myh = elf_link_hash_lookup
4301 (&(globals)->root, tmp_name, FALSE, FALSE, FALSE);
906e58ca 4302
845b51d6 4303 BFD_ASSERT (myh == NULL);
906e58ca 4304
845b51d6
PB		 4305 bh = NULL;
4306 val = globals->bx_glue_size;
4307 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
4308 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
4309 NULL, TRUE, FALSE, &bh);
4310
4311 myh = (struct elf_link_hash_entry *) bh;
4312 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4313 myh->forced_local = 1;
4314
4315 s->size += ARM_BX_VENEER_SIZE;
4316 globals->bx_glue_offset[reg] = globals->bx_glue_size | 2;
4317 globals->bx_glue_size += ARM_BX_VENEER_SIZE;
4318}
4319
4320
c7b8f16e
JB		 4321/* Add an entry to the code/data map for section SEC. */
4322
4323static void
4324elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma)
4325{
4326 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
4327 unsigned int newidx;
906e58ca 4328
c7b8f16e
JB		 4329 if (sec_data->map == NULL)
4330 {
4331 sec_data->map = bfd_malloc (sizeof (elf32_arm_section_map));
4332 sec_data->mapcount = 0;
4333 sec_data->mapsize = 1;
4334 }
906e58ca 4335
c7b8f16e 4336 newidx = sec_data->mapcount++;
906e58ca 4337
c7b8f16e
JB		 4338 if (sec_data->mapcount > sec_data->mapsize)
4339 {
4340 sec_data->mapsize *= 2;
515ef31d
NC		 4341 sec_data->map = bfd_realloc_or_free (sec_data->map, sec_data->mapsize
4342 * sizeof (elf32_arm_section_map));
4343 }
4344
4345 if (sec_data->map)
4346 {
4347 sec_data->map[newidx].vma = vma;
4348 sec_data->map[newidx].type = type;
c7b8f16e 4349 }
c7b8f16e
JB		 4350}
4351
4352
4353/* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
4354 veneers are handled for now. */
4355
4356static bfd_vma
4357record_vfp11_erratum_veneer (struct bfd_link_info *link_info,
4358 elf32_vfp11_erratum_list *branch,
4359 bfd *branch_bfd,
4360 asection *branch_sec,
4361 unsigned int offset)
4362{
4363 asection *s;
4364 struct elf32_arm_link_hash_table *hash_table;
4365 char *tmp_name;
4366 struct elf_link_hash_entry *myh;
4367 struct bfd_link_hash_entry *bh;
4368 bfd_vma val;
4369 struct _arm_elf_section_data *sec_data;
4370 int errcount;
4371 elf32_vfp11_erratum_list *newerr;
906e58ca 4372
c7b8f16e 4373 hash_table = elf32_arm_hash_table (link_info);
906e58ca 4374
c7b8f16e
JB		 4375 BFD_ASSERT (hash_table != NULL);
4376 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
906e58ca 4377
c7b8f16e
JB		 4378 s = bfd_get_section_by_name
4379 (hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
906e58ca 4380
c7b8f16e 4381 sec_data = elf32_arm_section_data (s);
906e58ca 4382
c7b8f16e 4383 BFD_ASSERT (s != NULL);
906e58ca 4384
c7b8f16e
JB		 4385 tmp_name = bfd_malloc ((bfd_size_type) strlen
4386 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
906e58ca 4387
c7b8f16e 4388 BFD_ASSERT (tmp_name);
906e58ca 4389
c7b8f16e
JB		 4390 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
4391 hash_table->num_vfp11_fixes);
906e58ca 4392
c7b8f16e
JB		 4393 myh = elf_link_hash_lookup
4394 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
906e58ca 4395
c7b8f16e 4396 BFD_ASSERT (myh == NULL);
906e58ca 4397
c7b8f16e
JB		 4398 bh = NULL;
4399 val = hash_table->vfp11_erratum_glue_size;
4400 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
4401 tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
4402 NULL, TRUE, FALSE, &bh);
4403
4404 myh = (struct elf_link_hash_entry *) bh;
4405 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4406 myh->forced_local = 1;
4407
4408 /* Link veneer back to calling location. */
4409 errcount = ++(sec_data->erratumcount);
4410 newerr = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
906e58ca 4411
c7b8f16e
JB		 4412 newerr->type = VFP11_ERRATUM_ARM_VENEER;
4413 newerr->vma = -1;
4414 newerr->u.v.branch = branch;
4415 newerr->u.v.id = hash_table->num_vfp11_fixes;
4416 branch->u.b.veneer = newerr;
4417
4418 newerr->next = sec_data->erratumlist;
4419 sec_data->erratumlist = newerr;
4420
4421 /* A symbol for the return from the veneer. */
4422 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
4423 hash_table->num_vfp11_fixes);
4424
4425 myh = elf_link_hash_lookup
4426 (&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
906e58ca 4427
c7b8f16e
JB		 4428 if (myh != NULL)
4429 abort ();
4430
4431 bh = NULL;
4432 val = offset + 4;
4433 _bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL,
4434 branch_sec, val, NULL, TRUE, FALSE, &bh);
906e58ca 4435
c7b8f16e
JB		 4436 myh = (struct elf_link_hash_entry *) bh;
4437 myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
4438 myh->forced_local = 1;
4439
4440 free (tmp_name);
906e58ca 4441
c7b8f16e
JB		 4442 /* Generate a mapping symbol for the veneer section, and explicitly add an
4443 entry for that symbol to the code/data map for the section. */
4444 if (hash_table->vfp11_erratum_glue_size == 0)
4445 {
4446 bh = NULL;
4447 /* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
4448 ever requires this erratum fix. */
4449 _bfd_generic_link_add_one_symbol (link_info,
4450 hash_table->bfd_of_glue_owner, "$a",
4451 BSF_LOCAL, s, 0, NULL,
4452 TRUE, FALSE, &bh);
4453
4454 myh = (struct elf_link_hash_entry *) bh;
4455 myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
4456 myh->forced_local = 1;
906e58ca 4457
c7b8f16e
JB		 4458 /* The elf32_arm_init_maps function only cares about symbols from input
4459 BFDs. We must make a note of this generated mapping symbol
4460 ourselves so that code byteswapping works properly in
4461 elf32_arm_write_section. */
4462 elf32_arm_section_map_add (s, 'a', 0);
4463 }
906e58ca 4464
c7b8f16e
JB		 4465 s->size += VFP11_ERRATUM_VENEER_SIZE;
4466 hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE;
4467 hash_table->num_vfp11_fixes++;
906e58ca 4468
c7b8f16e
JB		 4469 /* The offset of the veneer. */
4470 return val;
4471}
4472
8029a119 4473#define ARM_GLUE_SECTION_FLAGS \
3e6b1042
DJ		 4474 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE \
4475 | SEC_READONLY | SEC_LINKER_CREATED)
8029a119
NC		 4476
4477/* Create a fake section for use by the ARM backend of the linker. */
4478
4479static bfd_boolean
4480arm_make_glue_section (bfd * abfd, const char * name)
4481{
4482 asection * sec;
4483
4484 sec = bfd_get_section_by_name (abfd, name);
4485 if (sec != NULL)
4486 /* Already made. */
4487 return TRUE;
4488
4489 sec = bfd_make_section_with_flags (abfd, name, ARM_GLUE_SECTION_FLAGS);
4490
4491 if (sec == NULL
4492 || !bfd_set_section_alignment (abfd, sec, 2))
4493 return FALSE;
4494
4495 /* Set the gc mark to prevent the section from being removed by garbage
4496 collection, despite the fact that no relocs refer to this section. */
4497 sec->gc_mark = 1;
4498
4499 return TRUE;
4500}
4501
8afb0e02
NC		 4502/* Add the glue sections to ABFD. This function is called from the
4503 linker scripts in ld/emultempl/{armelf}.em. */
9b485d32 4504
b34976b6 4505bfd_boolean
57e8b36a
NC		 4506bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
4507 struct bfd_link_info *info)
252b5132 4508{
8afb0e02
NC		 4509 /* If we are only performing a partial
4510 link do not bother adding the glue. */
1049f94e 4511 if (info->relocatable)
b34976b6 4512 return TRUE;
252b5132 4513
8029a119
NC		 4514 return arm_make_glue_section (abfd, ARM2THUMB_GLUE_SECTION_NAME)
4515 && arm_make_glue_section (abfd, THUMB2ARM_GLUE_SECTION_NAME)
4516 && arm_make_glue_section (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME)
4517 && arm_make_glue_section (abfd, ARM_BX_GLUE_SECTION_NAME);
8afb0e02
NC		 4518}
4519
4520/* Select a BFD to be used to hold the sections used by the glue code.
4521 This function is called from the linker scripts in ld/emultempl/
8029a119 4522 {armelf/pe}.em. */
8afb0e02 4523
b34976b6 4524bfd_boolean
57e8b36a 4525bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
8afb0e02
NC		 4526{
4527 struct elf32_arm_link_hash_table *globals;
4528
4529 /* If we are only performing a partial link
4530 do not bother getting a bfd to hold the glue. */
1049f94e 4531 if (info->relocatable)
b34976b6 4532 return TRUE;
8afb0e02 4533
b7693d02
DJ		 4534 /* Make sure we don't attach the glue sections to a dynamic object. */
4535 BFD_ASSERT (!(abfd->flags & DYNAMIC));
4536
8afb0e02
NC		 4537 globals = elf32_arm_hash_table (info);
4538
4539 BFD_ASSERT (globals != NULL);
4540
4541 if (globals->bfd_of_glue_owner != NULL)
b34976b6 4542 return TRUE;
8afb0e02 4543
252b5132
RH		 4544 /* Save the bfd for later use. */
4545 globals->bfd_of_glue_owner = abfd;
cedb70c5 4546
b34976b6 4547 return TRUE;
252b5132
RH		 4548}
4549
906e58ca
NC		 4550static void
4551check_use_blx (struct elf32_arm_link_hash_table *globals)
39b41c9c 4552{
104d59d1
JM		 4553 if (bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
4554 Tag_CPU_arch) > 2)
39b41c9c
PB		 4555 globals->use_blx = 1;
4556}
4557
b34976b6 4558bfd_boolean
57e8b36a 4559bfd_elf32_arm_process_before_allocation (bfd *abfd,
d504ffc8 4560 struct bfd_link_info *link_info)
252b5132
RH		 4561{
4562 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc 4563 Elf_Internal_Rela *internal_relocs = NULL;
252b5132
RH		 4564 Elf_Internal_Rela *irel, *irelend;
4565 bfd_byte *contents = NULL;
252b5132
RH		 4566
4567 asection *sec;
4568 struct elf32_arm_link_hash_table *globals;
4569
4570 /* If we are only performing a partial link do not bother
4571 to construct any glue. */
1049f94e 4572 if (link_info->relocatable)
b34976b6 4573 return TRUE;
252b5132 4574
39ce1a6a
NC		 4575 /* Here we have a bfd that is to be included on the link. We have a
4576 hook to do reloc rummaging, before section sizes are nailed down. */
252b5132
RH		 4577 globals = elf32_arm_hash_table (link_info);
4578
4579 BFD_ASSERT (globals != NULL);
39ce1a6a
NC		 4580
4581 check_use_blx (globals);
252b5132 4582
d504ffc8 4583 if (globals->byteswap_code && !bfd_big_endian (abfd))
e489d0ae 4584 {
d003868e
AM		 4585 _bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
4586 abfd);
e489d0ae
PB		 4587 return FALSE;
4588 }
f21f3fe0 4589
39ce1a6a
NC		 4590 /* PR 5398: If we have not decided to include any loadable sections in
4591 the output then we will not have a glue owner bfd. This is OK, it
4592 just means that there is nothing else for us to do here. */
4593 if (globals->bfd_of_glue_owner == NULL)
4594 return TRUE;
4595
252b5132
RH		 4596 /* Rummage around all the relocs and map the glue vectors. */
4597 sec = abfd->sections;
4598
4599 if (sec == NULL)
b34976b6 4600 return TRUE;
252b5132
RH		 4601
4602 for (; sec != NULL; sec = sec->next)
4603 {
4604 if (sec->reloc_count == 0)
4605 continue;
4606
2f475487
AM		 4607 if ((sec->flags & SEC_EXCLUDE) != 0)
4608 continue;
4609
0ffa91dd 4610 symtab_hdr = & elf_symtab_hdr (abfd);
252b5132 4611
9b485d32 4612 /* Load the relocs. */
6cdc0ccc 4613 internal_relocs
906e58ca 4614 = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, FALSE);
252b5132 4615
6cdc0ccc
AM		 4616 if (internal_relocs == NULL)
4617 goto error_return;
252b5132 4618
6cdc0ccc
AM		 4619 irelend = internal_relocs + sec->reloc_count;
4620 for (irel = internal_relocs; irel < irelend; irel++)
252b5132
RH		 4621 {
4622 long r_type;
4623 unsigned long r_index;
252b5132
RH		 4624
4625 struct elf_link_hash_entry *h;
4626
4627 r_type = ELF32_R_TYPE (irel->r_info);
4628 r_index = ELF32_R_SYM (irel->r_info);
4629
9b485d32 4630 /* These are the only relocation types we care about. */
ba96a88f 4631 if ( r_type != R_ARM_PC24
845b51d6 4632 && (r_type != R_ARM_V4BX || globals->fix_v4bx < 2))
252b5132
RH		 4633 continue;
4634
4635 /* Get the section contents if we haven't done so already. */
4636 if (contents == NULL)
4637 {
4638 /* Get cached copy if it exists. */
4639 if (elf_section_data (sec)->this_hdr.contents != NULL)
4640 contents = elf_section_data (sec)->this_hdr.contents;
4641 else
4642 {
4643 /* Go get them off disk. */
57e8b36a 4644 if (! bfd_malloc_and_get_section (abfd, sec, &contents))
252b5132
RH		 4645 goto error_return;
4646 }
4647 }
4648
845b51d6
PB		 4649 if (r_type == R_ARM_V4BX)
4650 {
4651 int reg;
4652
4653 reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf;
4654 record_arm_bx_glue (link_info, reg);
4655 continue;
4656 }
4657
a7c10850 4658 /* If the relocation is not against a symbol it cannot concern us. */
252b5132
RH		 4659 h = NULL;
4660
9b485d32 4661 /* We don't care about local symbols. */
252b5132
RH		 4662 if (r_index < symtab_hdr->sh_info)
4663 continue;
4664
9b485d32 4665 /* This is an external symbol. */
252b5132
RH		 4666 r_index -= symtab_hdr->sh_info;
4667 h = (struct elf_link_hash_entry *)
4668 elf_sym_hashes (abfd)[r_index];
4669
4670 /* If the relocation is against a static symbol it must be within
4671 the current section and so cannot be a cross ARM/Thumb relocation. */
4672 if (h == NULL)
4673 continue;
4674
d504ffc8
DJ		 4675 /* If the call will go through a PLT entry then we do not need
4676 glue. */
4677 if (globals->splt != NULL && h->plt.offset != (bfd_vma) -1)
b7693d02
DJ		 4678 continue;
4679
252b5132
RH		 4680 switch (r_type)
4681 {
4682 case R_ARM_PC24:
4683 /* This one is a call from arm code. We need to look up
2f0ca46a 4684 the target of the call. If it is a thumb target, we
252b5132 4685 insert glue. */
ebe24dd4 4686 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
252b5132
RH		 4687 record_arm_to_thumb_glue (link_info, h);
4688 break;
4689
252b5132 4690 default:
c6596c5e 4691 abort ();
252b5132
RH		 4692 }
4693 }
6cdc0ccc
AM		 4694
4695 if (contents != NULL
4696 && elf_section_data (sec)->this_hdr.contents != contents)
4697 free (contents);
4698 contents = NULL;
4699
4700 if (internal_relocs != NULL
4701 && elf_section_data (sec)->relocs != internal_relocs)
4702 free (internal_relocs);
4703 internal_relocs = NULL;
252b5132
RH		 4704 }
4705
b34976b6 4706 return TRUE;
9a5aca8c 4707
252b5132 4708error_return:
6cdc0ccc
AM		 4709 if (contents != NULL
4710 && elf_section_data (sec)->this_hdr.contents != contents)
4711 free (contents);
4712 if (internal_relocs != NULL
4713 && elf_section_data (sec)->relocs != internal_relocs)
4714 free (internal_relocs);
9a5aca8c 4715
b34976b6 4716 return FALSE;
252b5132 4717}
7e392df6 4718#endif
252b5132 4719
eb043451 4720
c7b8f16e
JB		 4721/* Initialise maps of ARM/Thumb/data for input BFDs. */
4722
4723void
4724bfd_elf32_arm_init_maps (bfd *abfd)
4725{
4726 Elf_Internal_Sym *isymbuf;
4727 Elf_Internal_Shdr *hdr;
4728 unsigned int i, localsyms;
4729
af1f4419
NC		 4730 /* PR 7093: Make sure that we are dealing with an arm elf binary. */
4731 if (! is_arm_elf (abfd))
4732 return;
4733
c7b8f16e
JB		 4734 if ((abfd->flags & DYNAMIC) != 0)
4735 return;
4736
0ffa91dd 4737 hdr = & elf_symtab_hdr (abfd);
c7b8f16e
JB		 4738 localsyms = hdr->sh_info;
4739
4740 /* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
4741 should contain the number of local symbols, which should come before any
4742 global symbols. Mapping symbols are always local. */
4743 isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL,
4744 NULL);
4745
4746 /* No internal symbols read? Skip this BFD. */
4747 if (isymbuf == NULL)
4748 return;
4749
4750 for (i = 0; i < localsyms; i++)
4751 {
4752 Elf_Internal_Sym *isym = &isymbuf[i];
4753 asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4754 const char *name;
906e58ca 4755
c7b8f16e
JB		 4756 if (sec != NULL
4757 && ELF_ST_BIND (isym->st_info) == STB_LOCAL)
4758 {
4759 name = bfd_elf_string_from_elf_section (abfd,
4760 hdr->sh_link, isym->st_name);
906e58ca 4761
c7b8f16e
JB		 4762 if (bfd_is_arm_special_symbol_name (name,
4763 BFD_ARM_SPECIAL_SYM_TYPE_MAP))
4764 elf32_arm_section_map_add (sec, name[1], isym->st_value);
4765 }
4766 }
4767}
4768
4769
4770void
4771bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info)
4772{
4773 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
104d59d1 4774 obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd);
906e58ca 4775
c7b8f16e
JB		 4776 /* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
4777 if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7)
4778 {
4779 switch (globals->vfp11_fix)
4780 {
4781 case BFD_ARM_VFP11_FIX_DEFAULT:
4782 case BFD_ARM_VFP11_FIX_NONE:
4783 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
4784 break;
906e58ca 4785
c7b8f16e
JB		 4786 default:
4787 /* Give a warning, but do as the user requests anyway. */
4788 (*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum "
4789 "workaround is not necessary for target architecture"), obfd);
4790 }
4791 }
4792 else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT)
4793 /* For earlier architectures, we might need the workaround, but do not
4794 enable it by default. If users is running with broken hardware, they
4795 must enable the erratum fix explicitly. */
4796 globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
4797}
4798
4799
906e58ca
NC		 4800enum bfd_arm_vfp11_pipe
4801{
c7b8f16e
JB		 4802 VFP11_FMAC,
4803 VFP11_LS,
4804 VFP11_DS,
4805 VFP11_BAD
4806};
4807
4808/* Return a VFP register number. This is encoded as RX:X for single-precision
4809 registers, or X:RX for double-precision registers, where RX is the group of
4810 four bits in the instruction encoding and X is the single extension bit.
4811 RX and X fields are specified using their lowest (starting) bit. The return
4812 value is:
4813
4814 0...31: single-precision registers s0...s31
4815 32...63: double-precision registers d0...d31.
906e58ca 4816
c7b8f16e
JB		 4817 Although X should be zero for VFP11 (encoding d0...d15 only), we might
4818 encounter VFP3 instructions, so we allow the full range for DP registers. */
906e58ca 4819
c7b8f16e
JB		 4820static unsigned int
4821bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx,
4822 unsigned int x)
4823{
4824 if (is_double)
4825 return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32;
4826 else
4827 return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1);
4828}
4829
4830/* Set bits in *WMASK according to a register number REG as encoded by
4831 bfd_arm_vfp11_regno(). Ignore d16-d31. */
4832
4833static void
4834bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg)
4835{
4836 if (reg < 32)
4837 *wmask |= 1 << reg;
4838 else if (reg < 48)
4839 *wmask |= 3 << ((reg - 32) * 2);
4840}
4841
4842/* Return TRUE if WMASK overwrites anything in REGS. */
4843
4844static bfd_boolean
4845bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs)
4846{
4847 int i;
906e58ca 4848
c7b8f16e
JB		 4849 for (i = 0; i < numregs; i++)
4850 {
4851 unsigned int reg = regs[i];
4852
4853 if (reg < 32 && (wmask & (1 << reg)) != 0)
4854 return TRUE;
906e58ca 4855
c7b8f16e
JB		 4856 reg -= 32;
4857
4858 if (reg >= 16)
4859 continue;
906e58ca 4860
c7b8f16e
JB		 4861 if ((wmask & (3 << (reg * 2))) != 0)
4862 return TRUE;
4863 }
906e58ca 4864
c7b8f16e
JB		 4865 return FALSE;
4866}
4867
4868/* In this function, we're interested in two things: finding input registers
4869 for VFP data-processing instructions, and finding the set of registers which
4870 arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
4871 hold the written set, so FLDM etc. are easy to deal with (we're only
4872 interested in 32 SP registers or 16 dp registers, due to the VFP version
4873 implemented by the chip in question). DP registers are marked by setting
4874 both SP registers in the write mask). */
4875
4876static enum bfd_arm_vfp11_pipe
4877bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs,
4878 int *numregs)
4879{
4880 enum bfd_arm_vfp11_pipe pipe = VFP11_BAD;
4881 bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0;
4882
4883 if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
4884 {
4885 unsigned int pqrs;
4886 unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
4887 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
4888
4889 pqrs = ((insn & 0x00800000) >> 20)
4890 | ((insn & 0x00300000) >> 19)
4891 | ((insn & 0x00000040) >> 6);
4892
4893 switch (pqrs)
4894 {
4895 case 0: /* fmac[sd]. */
4896 case 1: /* fnmac[sd]. */
4897 case 2: /* fmsc[sd]. */
4898 case 3: /* fnmsc[sd]. */
4899 pipe = VFP11_FMAC;
4900 bfd_arm_vfp11_write_mask (destmask, fd);
4901 regs[0] = fd;
4902 regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
4903 regs[2] = fm;
4904 *numregs = 3;
4905 break;
4906
4907 case 4: /* fmul[sd]. */
4908 case 5: /* fnmul[sd]. */
4909 case 6: /* fadd[sd]. */
4910 case 7: /* fsub[sd]. */
4911 pipe = VFP11_FMAC;
4912 goto vfp_binop;
4913
4914 case 8: /* fdiv[sd]. */
4915 pipe = VFP11_DS;
4916 vfp_binop:
4917 bfd_arm_vfp11_write_mask (destmask, fd);
4918 regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
4919 regs[1] = fm;
4920 *numregs = 2;
4921 break;
4922
4923 case 15: /* extended opcode. */
4924 {
4925 unsigned int extn = ((insn >> 15) & 0x1e)
4926 | ((insn >> 7) & 1);
4927
4928 switch (extn)
4929 {
4930 case 0: /* fcpy[sd]. */
4931 case 1: /* fabs[sd]. */
4932 case 2: /* fneg[sd]. */
4933 case 8: /* fcmp[sd]. */
4934 case 9: /* fcmpe[sd]. */
4935 case 10: /* fcmpz[sd]. */
4936 case 11: /* fcmpez[sd]. */
4937 case 16: /* fuito[sd]. */
4938 case 17: /* fsito[sd]. */
4939 case 24: /* ftoui[sd]. */
4940 case 25: /* ftouiz[sd]. */
4941 case 26: /* ftosi[sd]. */
4942 case 27: /* ftosiz[sd]. */
4943 /* These instructions will not bounce due to underflow. */
4944 *numregs = 0;
4945 pipe = VFP11_FMAC;
4946 break;
4947
4948 case 3: /* fsqrt[sd]. */
4949 /* fsqrt cannot underflow, but it can (perhaps) overwrite
4950 registers to cause the erratum in previous instructions. */
4951 bfd_arm_vfp11_write_mask (destmask, fd);
4952 pipe = VFP11_DS;
4953 break;
4954
4955 case 15: /* fcvt{ds,sd}. */
4956 {
4957 int rnum = 0;
4958
4959 bfd_arm_vfp11_write_mask (destmask, fd);
4960
4961 /* Only FCVTSD can underflow. */
4962 if ((insn & 0x100) != 0)
4963 regs[rnum++] = fm;
4964
4965 *numregs = rnum;
4966
4967 pipe = VFP11_FMAC;
4968 }
4969 break;
4970
4971 default:
4972 return VFP11_BAD;
4973 }
4974 }
4975 break;
4976
4977 default:
4978 return VFP11_BAD;
4979 }
4980 }
4981 /* Two-register transfer. */
4982 else if ((insn & 0x0fe00ed0) == 0x0c400a10)
4983 {
4984 unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
906e58ca 4985
c7b8f16e
JB		 4986 if ((insn & 0x100000) == 0)
4987 {
4988 if (is_double)
4989 bfd_arm_vfp11_write_mask (destmask, fm);
4990 else
4991 {
4992 bfd_arm_vfp11_write_mask (destmask, fm);
4993 bfd_arm_vfp11_write_mask (destmask, fm + 1);
4994 }
4995 }
4996
4997 pipe = VFP11_LS;
4998 }
4999 else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */
5000 {
5001 int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
5002 unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1);
906e58ca 5003
c7b8f16e
JB		 5004 switch (puw)
5005 {
5006 case 0: /* Two-reg transfer. We should catch these above. */
5007 abort ();
906e58ca 5008
c7b8f16e
JB		 5009 case 2: /* fldm[sdx]. */
5010 case 3:
5011 case 5:
5012 {
5013 unsigned int i, offset = insn & 0xff;
5014
5015 if (is_double)
5016 offset >>= 1;
5017
5018 for (i = fd; i < fd + offset; i++)
5019 bfd_arm_vfp11_write_mask (destmask, i);
5020 }
5021 break;
906e58ca 5022
c7b8f16e
JB		 5023 case 4: /* fld[sd]. */
5024 case 6:
5025 bfd_arm_vfp11_write_mask (destmask, fd);
5026 break;
906e58ca 5027
c7b8f16e
JB		 5028 default:
5029 return VFP11_BAD;
5030 }
5031
5032 pipe = VFP11_LS;
5033 }
5034 /* Single-register transfer. Note L==0. */
5035 else if ((insn & 0x0f100e10) == 0x0e000a10)
5036 {
5037 unsigned int opcode = (insn >> 21) & 7;
5038 unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7);
5039
5040 switch (opcode)
5041 {
5042 case 0: /* fmsr/fmdlr. */
5043 case 1: /* fmdhr. */
5044 /* Mark fmdhr and fmdlr as writing to the whole of the DP
5045 destination register. I don't know if this is exactly right,
5046 but it is the conservative choice. */
5047 bfd_arm_vfp11_write_mask (destmask, fn);
5048 break;
5049
5050 case 7: /* fmxr. */
5051 break;
5052 }
5053
5054 pipe = VFP11_LS;
5055 }
5056
5057 return pipe;
5058}
5059
5060
5061static int elf32_arm_compare_mapping (const void * a, const void * b);
5062
5063
5064/* Look for potentially-troublesome code sequences which might trigger the
5065 VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
5066 (available from ARM) for details of the erratum. A short version is
5067 described in ld.texinfo. */
5068
5069bfd_boolean
5070bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info)
5071{
5072 asection *sec;
5073 bfd_byte *contents = NULL;
5074 int state = 0;
5075 int regs[3], numregs = 0;
5076 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
5077 int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR);
906e58ca 5078
c7b8f16e
JB		 5079 /* We use a simple FSM to match troublesome VFP11 instruction sequences.
5080 The states transition as follows:
906e58ca 5081
c7b8f16e
JB		 5082 0 -> 1 (vector) or 0 -> 2 (scalar)
5083 A VFP FMAC-pipeline instruction has been seen. Fill
5084 regs[0]..regs[numregs-1] with its input operands. Remember this
5085 instruction in 'first_fmac'.
5086
5087 1 -> 2
5088 Any instruction, except for a VFP instruction which overwrites
5089 regs[*].
906e58ca 5090
c7b8f16e
JB		 5091 1 -> 3 [ -> 0 ] or
5092 2 -> 3 [ -> 0 ]
5093 A VFP instruction has been seen which overwrites any of regs[*].
5094 We must make a veneer! Reset state to 0 before examining next
5095 instruction.
906e58ca 5096
c7b8f16e
JB		 5097 2 -> 0
5098 If we fail to match anything in state 2, reset to state 0 and reset
5099 the instruction pointer to the instruction after 'first_fmac'.
5100
5101 If the VFP11 vector mode is in use, there must be at least two unrelated
5102 instructions between anti-dependent VFP11 instructions to properly avoid
906e58ca 5103 triggering the erratum, hence the use of the extra state 1. */
c7b8f16e
JB		 5104
5105 /* If we are only performing a partial link do not bother
5106 to construct any glue. */
5107 if (link_info->relocatable)
5108 return TRUE;
5109
0ffa91dd
NC		 5110 /* Skip if this bfd does not correspond to an ELF image. */
5111 if (! is_arm_elf (abfd))
5112 return TRUE;
906e58ca 5113
c7b8f16e
JB		 5114 /* We should have chosen a fix type by the time we get here. */
5115 BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT);
5116
5117 if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE)
5118 return TRUE;
2e6030b9 5119
33a7ffc2
JM		 5120 /* Skip this BFD if it corresponds to an executable or dynamic object. */
5121 if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0)
5122 return TRUE;
5123
c7b8f16e
JB		 5124 for (sec = abfd->sections; sec != NULL; sec = sec->next)
5125 {
5126 unsigned int i, span, first_fmac = 0, veneer_of_insn = 0;
5127 struct _arm_elf_section_data *sec_data;
5128
5129 /* If we don't have executable progbits, we're not interested in this
5130 section. Also skip if section is to be excluded. */
5131 if (elf_section_type (sec) != SHT_PROGBITS
5132 || (elf_section_flags (sec) & SHF_EXECINSTR) == 0
5133 || (sec->flags & SEC_EXCLUDE) != 0
33a7ffc2
JM		 5134 || sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
5135 || sec->output_section == bfd_abs_section_ptr
c7b8f16e
JB		 5136 || strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0)
5137 continue;
5138
5139 sec_data = elf32_arm_section_data (sec);
906e58ca 5140
c7b8f16e
JB		 5141 if (sec_data->mapcount == 0)
5142 continue;
906e58ca 5143
c7b8f16e
JB		 5144 if (elf_section_data (sec)->this_hdr.contents != NULL)
5145 contents = elf_section_data (sec)->this_hdr.contents;
5146 else if (! bfd_malloc_and_get_section (abfd, sec, &contents))
5147 goto error_return;
5148
5149 qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map),
5150 elf32_arm_compare_mapping);
5151
5152 for (span = 0; span < sec_data->mapcount; span++)
5153 {
5154 unsigned int span_start = sec_data->map[span].vma;
5155 unsigned int span_end = (span == sec_data->mapcount - 1)
5156 ? sec->size : sec_data->map[span + 1].vma;
5157 char span_type = sec_data->map[span].type;
906e58ca 5158
c7b8f16e
JB		 5159 /* FIXME: Only ARM mode is supported at present. We may need to
5160 support Thumb-2 mode also at some point. */
5161 if (span_type != 'a')
5162 continue;
5163
5164 for (i = span_start; i < span_end;)
5165 {
5166 unsigned int next_i = i + 4;
5167 unsigned int insn = bfd_big_endian (abfd)
5168 ? (contents[i] << 24)
5169 | (contents[i + 1] << 16)
5170 | (contents[i + 2] << 8)
5171 | contents[i + 3]
5172 : (contents[i + 3] << 24)
5173 | (contents[i + 2] << 16)
5174 | (contents[i + 1] << 8)
5175 | contents[i];
5176 unsigned int writemask = 0;
5177 enum bfd_arm_vfp11_pipe pipe;
5178
5179 switch (state)
5180 {
5181 case 0:
5182 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs,
5183 &numregs);
5184 /* I'm assuming the VFP11 erratum can trigger with denorm
5185 operands on either the FMAC or the DS pipeline. This might
5186 lead to slightly overenthusiastic veneer insertion. */
5187 if (pipe == VFP11_FMAC || pipe == VFP11_DS)
5188 {
5189 state = use_vector ? 1 : 2;
5190 first_fmac = i;
5191 veneer_of_insn = insn;
5192 }
5193 break;
5194
5195 case 1:
5196 {
5197 int other_regs[3], other_numregs;
5198 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
5199 other_regs,
5200 &other_numregs);
5201 if (pipe != VFP11_BAD
5202 && bfd_arm_vfp11_antidependency (writemask, regs,
5203 numregs))
5204 state = 3;
5205 else
5206 state = 2;
5207 }
5208 break;
5209
5210 case 2:
5211 {
5212 int other_regs[3], other_numregs;
5213 pipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
5214 other_regs,
5215 &other_numregs);
5216 if (pipe != VFP11_BAD
5217 && bfd_arm_vfp11_antidependency (writemask, regs,
5218 numregs))
5219 state = 3;
5220 else
5221 {
5222 state = 0;
5223 next_i = first_fmac + 4;
5224 }
5225 }
5226 break;
5227
5228 case 3:
5229 abort (); /* Should be unreachable. */
5230 }
5231
5232 if (state == 3)
5233 {
5234 elf32_vfp11_erratum_list *newerr
5235 = bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
5236 int errcount;
5237
5238 errcount = ++(elf32_arm_section_data (sec)->erratumcount);
5239
5240 newerr->u.b.vfp_insn = veneer_of_insn;
5241
5242 switch (span_type)
5243 {
5244 case 'a':
5245 newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER;
5246 break;
906e58ca 5247
c7b8f16e
JB		 5248 default:
5249 abort ();
5250 }
5251
5252 record_vfp11_erratum_veneer (link_info, newerr, abfd, sec,
5253 first_fmac);
5254
5255 newerr->vma = -1;
5256
5257 newerr->next = sec_data->erratumlist;
5258 sec_data->erratumlist = newerr;
5259
5260 state = 0;
5261 }
5262
5263 i = next_i;
5264 }
5265 }
906e58ca 5266
c7b8f16e
JB		 5267 if (contents != NULL
5268 && elf_section_data (sec)->this_hdr.contents != contents)
5269 free (contents);
5270 contents = NULL;
5271 }
5272
5273 return TRUE;
5274
5275error_return:
5276 if (contents != NULL
5277 && elf_section_data (sec)->this_hdr.contents != contents)
5278 free (contents);
906e58ca 5279
c7b8f16e
JB		 5280 return FALSE;
5281}
5282
5283/* Find virtual-memory addresses for VFP11 erratum veneers and return locations
5284 after sections have been laid out, using specially-named symbols. */
5285
5286void
5287bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd,
5288 struct bfd_link_info *link_info)
5289{
5290 asection *sec;
5291 struct elf32_arm_link_hash_table *globals;
5292 char *tmp_name;
906e58ca 5293
c7b8f16e
JB		 5294 if (link_info->relocatable)
5295 return;
2e6030b9
MS		 5296
5297 /* Skip if this bfd does not correspond to an ELF image. */
0ffa91dd 5298 if (! is_arm_elf (abfd))
2e6030b9
MS		 5299 return;
5300
c7b8f16e 5301 globals = elf32_arm_hash_table (link_info);
906e58ca 5302
c7b8f16e
JB		 5303 tmp_name = bfd_malloc ((bfd_size_type) strlen
5304 (VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
5305
5306 for (sec = abfd->sections; sec != NULL; sec = sec->next)
5307 {
5308 struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
5309 elf32_vfp11_erratum_list *errnode = sec_data->erratumlist;
906e58ca 5310
c7b8f16e
JB		 5311 for (; errnode != NULL; errnode = errnode->next)
5312 {
5313 struct elf_link_hash_entry *myh;
5314 bfd_vma vma;
5315
5316 switch (errnode->type)
5317 {
5318 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
5319 case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER:
5320 /* Find veneer symbol. */
5321 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
5322 errnode->u.b.veneer->u.v.id);
5323
5324 myh = elf_link_hash_lookup
5325 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
5326
5327 if (myh == NULL)
5328 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
5329 "`%s'"), abfd, tmp_name);
5330
5331 vma = myh->root.u.def.section->output_section->vma
5332 + myh->root.u.def.section->output_offset
5333 + myh->root.u.def.value;
5334
5335 errnode->u.b.veneer->vma = vma;
5336 break;
5337
5338 case VFP11_ERRATUM_ARM_VENEER:
5339 case VFP11_ERRATUM_THUMB_VENEER:
5340 /* Find return location. */
5341 sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
5342 errnode->u.v.id);
5343
5344 myh = elf_link_hash_lookup
5345 (&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
5346
5347 if (myh == NULL)
5348 (*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
5349 "`%s'"), abfd, tmp_name);
5350
5351 vma = myh->root.u.def.section->output_section->vma
5352 + myh->root.u.def.section->output_offset
5353 + myh->root.u.def.value;
5354
5355 errnode->u.v.branch->vma = vma;
5356 break;
906e58ca 5357
c7b8f16e
JB		 5358 default:
5359 abort ();
5360 }
5361 }
5362 }
906e58ca 5363
c7b8f16e
JB		 5364 free (tmp_name);
5365}
5366
5367
eb043451
PB		 5368/* Set target relocation values needed during linking. */
5369
5370void
bf21ed78
MS		 5371bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd,
5372 struct bfd_link_info *link_info,
eb043451 5373 int target1_is_rel,
319850b4 5374 char * target2_type,
33bfe774 5375 int fix_v4bx,
c7b8f16e 5376 int use_blx,
bf21ed78 5377 bfd_arm_vfp11_fix vfp11_fix,
a9dc9481
JM		 5378 int no_enum_warn, int no_wchar_warn,
5379 int pic_veneer)
eb043451
PB		 5380{
5381 struct elf32_arm_link_hash_table *globals;
5382
5383 globals = elf32_arm_hash_table (link_info);
5384
5385 globals->target1_is_rel = target1_is_rel;
5386 if (strcmp (target2_type, "rel") == 0)
5387 globals->target2_reloc = R_ARM_REL32;
eeac373a
PB		 5388 else if (strcmp (target2_type, "abs") == 0)
5389 globals->target2_reloc = R_ARM_ABS32;
eb043451
PB		 5390 else if (strcmp (target2_type, "got-rel") == 0)
5391 globals->target2_reloc = R_ARM_GOT_PREL;
5392 else
5393 {
5394 _bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
5395 target2_type);
5396 }
319850b4 5397 globals->fix_v4bx = fix_v4bx;
33bfe774 5398 globals->use_blx |= use_blx;
c7b8f16e 5399 globals->vfp11_fix = vfp11_fix;
27e55c4d 5400 globals->pic_veneer = pic_veneer;
bf21ed78 5401
0ffa91dd
NC		 5402 BFD_ASSERT (is_arm_elf (output_bfd));
5403 elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
a9dc9481 5404 elf_arm_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
eb043451 5405}
eb043451 5406
12a0a0fd 5407/* Replace the target offset of a Thumb bl or b.w instruction. */
252b5132 5408
12a0a0fd
PB		 5409static void
5410insert_thumb_branch (bfd *abfd, long int offset, bfd_byte *insn)
5411{
5412 bfd_vma upper;
5413 bfd_vma lower;
5414 int reloc_sign;
5415
5416 BFD_ASSERT ((offset & 1) == 0);
5417
5418 upper = bfd_get_16 (abfd, insn);
5419 lower = bfd_get_16 (abfd, insn + 2);
5420 reloc_sign = (offset < 0) ? 1 : 0;
5421 upper = (upper & ~(bfd_vma) 0x7ff)
5422 | ((offset >> 12) & 0x3ff)
5423 | (reloc_sign << 10);
906e58ca 5424 lower = (lower & ~(bfd_vma) 0x2fff)
12a0a0fd
PB		 5425 | (((!((offset >> 23) & 1)) ^ reloc_sign) << 13)
5426 | (((!((offset >> 22) & 1)) ^ reloc_sign) << 11)
5427 | ((offset >> 1) & 0x7ff);
5428 bfd_put_16 (abfd, upper, insn);
5429 bfd_put_16 (abfd, lower, insn + 2);
252b5132
RH		 5430}
5431
9b485d32
NC		 5432/* Thumb code calling an ARM function. */
5433
252b5132 5434static int
57e8b36a
NC		 5435elf32_thumb_to_arm_stub (struct bfd_link_info * info,
5436 const char * name,
5437 bfd * input_bfd,
5438 bfd * output_bfd,
5439 asection * input_section,
5440 bfd_byte * hit_data,
5441 asection * sym_sec,
5442 bfd_vma offset,
5443 bfd_signed_vma addend,
f2a9dd69
DJ		 5444 bfd_vma val,
5445 char **error_message)
252b5132 5446{
bcbdc74c 5447 asection * s = 0;
dc810e39 5448 bfd_vma my_offset;
252b5132 5449 long int ret_offset;
bcbdc74c
NC		 5450 struct elf_link_hash_entry * myh;
5451 struct elf32_arm_link_hash_table * globals;
252b5132 5452
f2a9dd69 5453 myh = find_thumb_glue (info, name, error_message);
252b5132 5454 if (myh == NULL)
b34976b6 5455 return FALSE;
252b5132
RH		 5456
5457 globals = elf32_arm_hash_table (info);
5458
5459 BFD_ASSERT (globals != NULL);
5460 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5461
5462 my_offset = myh->root.u.def.value;
5463
5464 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5465 THUMB2ARM_GLUE_SECTION_NAME);
5466
5467 BFD_ASSERT (s != NULL);
5468 BFD_ASSERT (s->contents != NULL);
5469 BFD_ASSERT (s->output_section != NULL);
5470
5471 if ((my_offset & 0x01) == 0x01)
5472 {
5473 if (sym_sec != NULL
5474 && sym_sec->owner != NULL
5475 && !INTERWORK_FLAG (sym_sec->owner))
5476 {
8f615d07 5477 (*_bfd_error_handler)
d003868e
AM		 5478 (_("%B(%s): warning: interworking not enabled.\n"
5479 " first occurrence: %B: thumb call to arm"),
5480 sym_sec->owner, input_bfd, name);
252b5132 5481
b34976b6 5482 return FALSE;
252b5132
RH		 5483 }
5484
5485 --my_offset;
5486 myh->root.u.def.value = my_offset;
5487
52ab56c2
PB		 5488 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn,
5489 s->contents + my_offset);
252b5132 5490
52ab56c2
PB		 5491 put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn,
5492 s->contents + my_offset + 2);
252b5132
RH		 5493
5494 ret_offset =
9b485d32
NC		 5495 /* Address of destination of the stub. */
5496 ((bfd_signed_vma) val)
252b5132 5497 - ((bfd_signed_vma)
57e8b36a
NC		 5498 /* Offset from the start of the current section
5499 to the start of the stubs. */
9b485d32
NC		 5500 (s->output_offset
5501 /* Offset of the start of this stub from the start of the stubs. */
5502 + my_offset
5503 /* Address of the start of the current section. */
5504 + s->output_section->vma)
5505 /* The branch instruction is 4 bytes into the stub. */
5506 + 4
5507 /* ARM branches work from the pc of the instruction + 8. */
5508 + 8);
252b5132 5509
52ab56c2
PB		 5510 put_arm_insn (globals, output_bfd,
5511 (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
5512 s->contents + my_offset + 4);
252b5132
RH		 5513 }
5514
5515 BFD_ASSERT (my_offset <= globals->thumb_glue_size);
5516
427bfd90
NC		 5517 /* Now go back and fix up the original BL insn to point to here. */
5518 ret_offset =
5519 /* Address of where the stub is located. */
5520 (s->output_section->vma + s->output_offset + my_offset)
5521 /* Address of where the BL is located. */
57e8b36a
NC		 5522 - (input_section->output_section->vma + input_section->output_offset
5523 + offset)
427bfd90
NC		 5524 /* Addend in the relocation. */
5525 - addend
5526 /* Biassing for PC-relative addressing. */
5527 - 8;
252b5132 5528
12a0a0fd 5529 insert_thumb_branch (input_bfd, ret_offset, hit_data - input_section->vma);
252b5132 5530
b34976b6 5531 return TRUE;
252b5132
RH		 5532}
5533
a4fd1a8e 5534/* Populate an Arm to Thumb stub. Returns the stub symbol. */
9b485d32 5535
a4fd1a8e
PB		 5536static struct elf_link_hash_entry *
5537elf32_arm_create_thumb_stub (struct bfd_link_info * info,
5538 const char * name,
5539 bfd * input_bfd,
5540 bfd * output_bfd,
5541 asection * sym_sec,
5542 bfd_vma val,
8029a119
NC		 5543 asection * s,
5544 char ** error_message)
252b5132 5545{
dc810e39 5546 bfd_vma my_offset;
252b5132 5547 long int ret_offset;
bcbdc74c
NC		 5548 struct elf_link_hash_entry * myh;
5549 struct elf32_arm_link_hash_table * globals;
252b5132 5550
f2a9dd69 5551 myh = find_arm_glue (info, name, error_message);
252b5132 5552 if (myh == NULL)
a4fd1a8e 5553 return NULL;
252b5132
RH		 5554
5555 globals = elf32_arm_hash_table (info);
5556
5557 BFD_ASSERT (globals != NULL);
5558 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5559
5560 my_offset = myh->root.u.def.value;
252b5132
RH		 5561
5562 if ((my_offset & 0x01) == 0x01)
5563 {
5564 if (sym_sec != NULL
5565 && sym_sec->owner != NULL
5566 && !INTERWORK_FLAG (sym_sec->owner))
5567 {
8f615d07 5568 (*_bfd_error_handler)
d003868e
AM		 5569 (_("%B(%s): warning: interworking not enabled.\n"
5570 " first occurrence: %B: arm call to thumb"),
5571 sym_sec->owner, input_bfd, name);
252b5132 5572 }
9b485d32 5573
252b5132
RH		 5574 --my_offset;
5575 myh->root.u.def.value = my_offset;
5576
27e55c4d
PB		 5577 if (info->shared || globals->root.is_relocatable_executable
5578 || globals->pic_veneer)
8f6277f5
PB		 5579 {
5580 /* For relocatable objects we can't use absolute addresses,
5581 so construct the address from a relative offset. */
5582 /* TODO: If the offset is small it's probably worth
5583 constructing the address with adds. */
52ab56c2
PB		 5584 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn,
5585 s->contents + my_offset);
5586 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn,
5587 s->contents + my_offset + 4);
5588 put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
5589 s->contents + my_offset + 8);
8f6277f5
PB		 5590 /* Adjust the offset by 4 for the position of the add,
5591 and 8 for the pipeline offset. */
5592 ret_offset = (val - (s->output_offset
5593 + s->output_section->vma
5594 + my_offset + 12))
5595 | 1;
5596 bfd_put_32 (output_bfd, ret_offset,
5597 s->contents + my_offset + 12);
5598 }
26079076
PB		 5599 else if (globals->use_blx)
5600 {
5601 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn,
5602 s->contents + my_offset);
5603
5604 /* It's a thumb address. Add the low order bit. */
5605 bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn,
5606 s->contents + my_offset + 4);
5607 }
8f6277f5
PB		 5608 else
5609 {
52ab56c2
PB		 5610 put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn,
5611 s->contents + my_offset);
252b5132 5612
52ab56c2
PB		 5613 put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn,
5614 s->contents + my_offset + 4);
252b5132 5615
8f6277f5
PB		 5616 /* It's a thumb address. Add the low order bit. */
5617 bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
5618 s->contents + my_offset + 8);
8029a119
NC		 5619
5620 my_offset += 12;
8f6277f5 5621 }
252b5132
RH		 5622 }
5623
5624 BFD_ASSERT (my_offset <= globals->arm_glue_size);
5625
a4fd1a8e
PB		 5626 return myh;
5627}
5628
5629/* Arm code calling a Thumb function. */
5630
5631static int
5632elf32_arm_to_thumb_stub (struct bfd_link_info * info,
5633 const char * name,
5634 bfd * input_bfd,
5635 bfd * output_bfd,
5636 asection * input_section,
5637 bfd_byte * hit_data,
5638 asection * sym_sec,
5639 bfd_vma offset,
5640 bfd_signed_vma addend,
f2a9dd69
DJ		 5641 bfd_vma val,
5642 char **error_message)
a4fd1a8e
PB		 5643{
5644 unsigned long int tmp;
5645 bfd_vma my_offset;
5646 asection * s;
5647 long int ret_offset;
5648 struct elf_link_hash_entry * myh;
5649 struct elf32_arm_link_hash_table * globals;
5650
5651 globals = elf32_arm_hash_table (info);
5652
5653 BFD_ASSERT (globals != NULL);
5654 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5655
5656 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5657 ARM2THUMB_GLUE_SECTION_NAME);
5658 BFD_ASSERT (s != NULL);
5659 BFD_ASSERT (s->contents != NULL);
5660 BFD_ASSERT (s->output_section != NULL);
5661
5662 myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd,
f2a9dd69 5663 sym_sec, val, s, error_message);
a4fd1a8e
PB		 5664 if (!myh)
5665 return FALSE;
5666
5667 my_offset = myh->root.u.def.value;
252b5132
RH		 5668 tmp = bfd_get_32 (input_bfd, hit_data);
5669 tmp = tmp & 0xFF000000;
5670
9b485d32 5671 /* Somehow these are both 4 too far, so subtract 8. */
dc810e39
AM		 5672 ret_offset = (s->output_offset
5673 + my_offset
5674 + s->output_section->vma
5675 - (input_section->output_offset
5676 + input_section->output_section->vma
5677 + offset + addend)
5678 - 8);
9a5aca8c 5679
252b5132
RH		 5680 tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
5681
dc810e39 5682 bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
252b5132 5683
b34976b6 5684 return TRUE;
252b5132
RH		 5685}
5686
a4fd1a8e
PB		 5687/* Populate Arm stub for an exported Thumb function. */
5688
5689static bfd_boolean
5690elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf)
5691{
5692 struct bfd_link_info * info = (struct bfd_link_info *) inf;
5693 asection * s;
5694 struct elf_link_hash_entry * myh;
5695 struct elf32_arm_link_hash_entry *eh;
5696 struct elf32_arm_link_hash_table * globals;
5697 asection *sec;
5698 bfd_vma val;
f2a9dd69 5699 char *error_message;
a4fd1a8e 5700
906e58ca 5701 eh = elf32_arm_hash_entry (h);
a4fd1a8e
PB		 5702 /* Allocate stubs for exported Thumb functions on v4t. */
5703 if (eh->export_glue == NULL)
5704 return TRUE;
5705
5706 globals = elf32_arm_hash_table (info);
5707
5708 BFD_ASSERT (globals != NULL);
5709 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5710
5711 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5712 ARM2THUMB_GLUE_SECTION_NAME);
5713 BFD_ASSERT (s != NULL);
5714 BFD_ASSERT (s->contents != NULL);
5715 BFD_ASSERT (s->output_section != NULL);
5716
5717 sec = eh->export_glue->root.u.def.section;
0eaedd0e
PB		 5718
5719 BFD_ASSERT (sec->output_section != NULL);
5720
a4fd1a8e
PB		 5721 val = eh->export_glue->root.u.def.value + sec->output_offset
5722 + sec->output_section->vma;
8029a119 5723
a4fd1a8e
PB		 5724 myh = elf32_arm_create_thumb_stub (info, h->root.root.string,
5725 h->root.u.def.section->owner,
f2a9dd69
DJ		 5726 globals->obfd, sec, val, s,
5727 &error_message);
a4fd1a8e
PB		 5728 BFD_ASSERT (myh);
5729 return TRUE;
5730}
5731
845b51d6
PB		 5732/* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */
5733
5734static bfd_vma
5735elf32_arm_bx_glue (struct bfd_link_info * info, int reg)
5736{
5737 bfd_byte *p;
5738 bfd_vma glue_addr;
5739 asection *s;
5740 struct elf32_arm_link_hash_table *globals;
5741
5742 globals = elf32_arm_hash_table (info);
5743
5744 BFD_ASSERT (globals != NULL);
5745 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
5746
5747 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
5748 ARM_BX_GLUE_SECTION_NAME);
5749 BFD_ASSERT (s != NULL);
5750 BFD_ASSERT (s->contents != NULL);
5751 BFD_ASSERT (s->output_section != NULL);
5752
5753 BFD_ASSERT (globals->bx_glue_offset[reg] & 2);
5754
5755 glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3;
5756
5757 if ((globals->bx_glue_offset[reg] & 1) == 0)
5758 {
5759 p = s->contents + glue_addr;
5760 bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p);
5761 bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4);
5762 bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8);
5763 globals->bx_glue_offset[reg] |= 1;
5764 }
5765
5766 return glue_addr + s->output_section->vma + s->output_offset;
5767}
5768
a4fd1a8e
PB		 5769/* Generate Arm stubs for exported Thumb symbols. */
5770static void
906e58ca 5771elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED,
a4fd1a8e
PB		 5772 struct bfd_link_info *link_info)
5773{
5774 struct elf32_arm_link_hash_table * globals;
5775
8029a119
NC		 5776 if (link_info == NULL)
5777 /* Ignore this if we are not called by the ELF backend linker. */
a4fd1a8e
PB		 5778 return;
5779
5780 globals = elf32_arm_hash_table (link_info);
84c08195
PB		 5781 /* If blx is available then exported Thumb symbols are OK and there is
5782 nothing to do. */
a4fd1a8e
PB		 5783 if (globals->use_blx)
5784 return;
5785
5786 elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub,
5787 link_info);
5788}
5789
eb043451
PB		 5790/* Some relocations map to different relocations depending on the
5791 target. Return the real relocation. */
8029a119 5792
eb043451
PB		 5793static int
5794arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
5795 int r_type)
5796{
5797 switch (r_type)
5798 {
5799 case R_ARM_TARGET1:
5800 if (globals->target1_is_rel)
5801 return R_ARM_REL32;
5802 else
5803 return R_ARM_ABS32;
5804
5805 case R_ARM_TARGET2:
5806 return globals->target2_reloc;
5807
5808 default:
5809 return r_type;
5810 }
5811}
eb043451 5812
ba93b8ac
DJ		 5813/* Return the base VMA address which should be subtracted from real addresses
5814 when resolving @dtpoff relocation.
5815 This is PT_TLS segment p_vaddr. */
5816
5817static bfd_vma
5818dtpoff_base (struct bfd_link_info *info)
5819{
5820 /* If tls_sec is NULL, we should have signalled an error already. */
5821 if (elf_hash_table (info)->tls_sec == NULL)
5822 return 0;
5823 return elf_hash_table (info)->tls_sec->vma;
5824}
5825
5826/* Return the relocation value for @tpoff relocation
5827 if STT_TLS virtual address is ADDRESS. */
5828
5829static bfd_vma
5830tpoff (struct bfd_link_info *info, bfd_vma address)
5831{
5832 struct elf_link_hash_table *htab = elf_hash_table (info);
5833 bfd_vma base;
5834
5835 /* If tls_sec is NULL, we should have signalled an error already. */
5836 if (htab->tls_sec == NULL)
5837 return 0;
5838 base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
5839 return address - htab->tls_sec->vma + base;
5840}
5841
00a97672
RS		 5842/* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
5843 VALUE is the relocation value. */
5844
5845static bfd_reloc_status_type
5846elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value)
5847{
5848 if (value > 0xfff)
5849 return bfd_reloc_overflow;
5850
5851 value |= bfd_get_32 (abfd, data) & 0xfffff000;
5852 bfd_put_32 (abfd, value, data);
5853 return bfd_reloc_ok;
5854}
5855
4962c51a
MS		 5856/* For a given value of n, calculate the value of G_n as required to
5857 deal with group relocations. We return it in the form of an
5858 encoded constant-and-rotation, together with the final residual. If n is
5859 specified as less than zero, then final_residual is filled with the
5860 input value and no further action is performed. */
5861
5862static bfd_vma
5863calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual)
5864{
5865 int current_n;
5866 bfd_vma g_n;
5867 bfd_vma encoded_g_n = 0;
5868 bfd_vma residual = value; /* Also known as Y_n. */
5869
5870 for (current_n = 0; current_n <= n; current_n++)
5871 {
5872 int shift;
5873
5874 /* Calculate which part of the value to mask. */
5875 if (residual == 0)
5876 shift = 0;
5877 else
5878 {
5879 int msb;
5880
5881 /* Determine the most significant bit in the residual and
5882 align the resulting value to a 2-bit boundary. */
5883 for (msb = 30; msb >= 0; msb -= 2)
5884 if (residual & (3 << msb))
5885 break;
5886
5887 /* The desired shift is now (msb - 6), or zero, whichever
5888 is the greater. */
5889 shift = msb - 6;
5890 if (shift < 0)
5891 shift = 0;
5892 }
5893
5894 /* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
5895 g_n = residual & (0xff << shift);
5896 encoded_g_n = (g_n >> shift)
5897 | ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8);
5898
5899 /* Calculate the residual for the next time around. */
5900 residual &= ~g_n;
5901 }
5902
5903 *final_residual = residual;
5904
5905 return encoded_g_n;
5906}
5907
5908/* Given an ARM instruction, determine whether it is an ADD or a SUB.
5909 Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
906e58ca 5910
4962c51a 5911static int
906e58ca 5912identify_add_or_sub (bfd_vma insn)
4962c51a
MS		 5913{
5914 int opcode = insn & 0x1e00000;
5915
5916 if (opcode == 1 << 23) /* ADD */
5917 return 1;
5918
5919 if (opcode == 1 << 22) /* SUB */
5920 return -1;
5921
5922 return 0;
5923}
5924
252b5132 5925/* Perform a relocation as part of a final link. */
9b485d32 5926
252b5132 5927static bfd_reloc_status_type
57e8b36a
NC		 5928elf32_arm_final_link_relocate (reloc_howto_type * howto,
5929 bfd * input_bfd,
5930 bfd * output_bfd,
5931 asection * input_section,
5932 bfd_byte * contents,
5933 Elf_Internal_Rela * rel,
5934 bfd_vma value,
5935 struct bfd_link_info * info,
5936 asection * sym_sec,
5937 const char * sym_name,
5938 int sym_flags,
0945cdfd 5939 struct elf_link_hash_entry * h,
f2a9dd69 5940 bfd_boolean * unresolved_reloc_p,
8029a119 5941 char ** error_message)
252b5132
RH		 5942{
5943 unsigned long r_type = howto->type;
5944 unsigned long r_symndx;
5945 bfd_byte * hit_data = contents + rel->r_offset;
5946 bfd * dynobj = NULL;
5947 Elf_Internal_Shdr * symtab_hdr;
5948 struct elf_link_hash_entry ** sym_hashes;
5949 bfd_vma * local_got_offsets;
5950 asection * sgot = NULL;
5951 asection * splt = NULL;
5952 asection * sreloc = NULL;
252b5132 5953 bfd_vma addend;
ba96a88f
NC		 5954 bfd_signed_vma signed_addend;
5955 struct elf32_arm_link_hash_table * globals;
f21f3fe0 5956
9c504268
PB		 5957 globals = elf32_arm_hash_table (info);
5958
0ffa91dd
NC		 5959 BFD_ASSERT (is_arm_elf (input_bfd));
5960
5961 /* Some relocation types map to different relocations depending on the
9c504268 5962 target. We pick the right one here. */
eb043451
PB		 5963 r_type = arm_real_reloc_type (globals, r_type);
5964 if (r_type != howto->type)
5965 howto = elf32_arm_howto_from_type (r_type);
9c504268 5966
cac15327
NC		 5967 /* If the start address has been set, then set the EF_ARM_HASENTRY
5968 flag. Setting this more than once is redundant, but the cost is
5969 not too high, and it keeps the code simple.
99e4ae17 5970
cac15327
NC		 5971 The test is done here, rather than somewhere else, because the
5972 start address is only set just before the final link commences.
5973
5974 Note - if the user deliberately sets a start address of 0, the
5975 flag will not be set. */
5976 if (bfd_get_start_address (output_bfd) != 0)
5977 elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
99e4ae17 5978
252b5132
RH		 5979 dynobj = elf_hash_table (info)->dynobj;
5980 if (dynobj)
5981 {
5982 sgot = bfd_get_section_by_name (dynobj, ".got");
5983 splt = bfd_get_section_by_name (dynobj, ".plt");
5984 }
0ffa91dd 5985 symtab_hdr = & elf_symtab_hdr (input_bfd);
252b5132
RH		 5986 sym_hashes = elf_sym_hashes (input_bfd);
5987 local_got_offsets = elf_local_got_offsets (input_bfd);
5988 r_symndx = ELF32_R_SYM (rel->r_info);
5989
4e7fd91e 5990 if (globals->use_rel)
ba96a88f 5991 {
4e7fd91e
PB		 5992 addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
5993
5994 if (addend & ((howto->src_mask + 1) >> 1))
5995 {
5996 signed_addend = -1;
5997 signed_addend &= ~ howto->src_mask;
5998 signed_addend |= addend;
5999 }
6000 else
6001 signed_addend = addend;
ba96a88f
NC		 6002 }
6003 else
4e7fd91e 6004 addend = signed_addend = rel->r_addend;
f21f3fe0 6005
252b5132
RH		 6006 switch (r_type)
6007 {
6008 case R_ARM_NONE:
28a094c2
DJ		 6009 /* We don't need to find a value for this symbol. It's just a
6010 marker. */
6011 *unresolved_reloc_p = FALSE;
252b5132
RH		 6012 return bfd_reloc_ok;
6013
00a97672
RS		 6014 case R_ARM_ABS12:
6015 if (!globals->vxworks_p)
6016 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
6017
252b5132
RH		 6018 case R_ARM_PC24:
6019 case R_ARM_ABS32:
bb224fc3 6020 case R_ARM_ABS32_NOI:
252b5132 6021 case R_ARM_REL32:
bb224fc3 6022 case R_ARM_REL32_NOI:
5b5bb741
PB		 6023 case R_ARM_CALL:
6024 case R_ARM_JUMP24:
dfc5f959 6025 case R_ARM_XPC25:
eb043451 6026 case R_ARM_PREL31:
7359ea65 6027 case R_ARM_PLT32:
7359ea65
DJ		 6028 /* Handle relocations which should use the PLT entry. ABS32/REL32
6029 will use the symbol's value, which may point to a PLT entry, but we
6030 don't need to handle that here. If we created a PLT entry, all
5fa9e92f
CL		 6031 branches in this object should go to it, except if the PLT is too
6032 far away, in which case a long branch stub should be inserted. */
bb224fc3 6033 if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32
5fa9e92f 6034 && r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI
155d87d7
CL		 6035 && r_type != R_ARM_CALL
6036 && r_type != R_ARM_JUMP24
6037 && r_type != R_ARM_PLT32)
7359ea65 6038 && h != NULL
c84cd8ee 6039 && splt != NULL
7359ea65
DJ		 6040 && h->plt.offset != (bfd_vma) -1)
6041 {
c84cd8ee
DJ		 6042 /* If we've created a .plt section, and assigned a PLT entry to
6043 this function, it should not be known to bind locally. If
6044 it were, we would have cleared the PLT entry. */
7359ea65
DJ		 6045 BFD_ASSERT (!SYMBOL_CALLS_LOCAL (info, h));
6046
6047 value = (splt->output_section->vma
6048 + splt->output_offset
6049 + h->plt.offset);
0945cdfd 6050 *unresolved_reloc_p = FALSE;
7359ea65
DJ		 6051 return _bfd_final_link_relocate (howto, input_bfd, input_section,
6052 contents, rel->r_offset, value,
00a97672 6053 rel->r_addend);
7359ea65
DJ		 6054 }
6055
67687978
PB		 6056 /* When generating a shared object or relocatable executable, these
6057 relocations are copied into the output file to be resolved at
6058 run time. */
6059 if ((info->shared || globals->root.is_relocatable_executable)
7359ea65 6060 && (input_section->flags & SEC_ALLOC)
3348747a
NS		 6061 && !(elf32_arm_hash_table (info)->vxworks_p
6062 && strcmp (input_section->output_section->name,
6063 ".tls_vars") == 0)
bb224fc3 6064 && ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI)
ee06dc07 6065 || !SYMBOL_CALLS_LOCAL (info, h))
7359ea65
DJ		 6066 && (h == NULL
6067 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
6068 || h->root.type != bfd_link_hash_undefweak)
6069 && r_type != R_ARM_PC24
5b5bb741
PB		 6070 && r_type != R_ARM_CALL
6071 && r_type != R_ARM_JUMP24
ee06dc07 6072 && r_type != R_ARM_PREL31
7359ea65 6073 && r_type != R_ARM_PLT32)
252b5132 6074 {
947216bf
AM		 6075 Elf_Internal_Rela outrel;
6076 bfd_byte *loc;
b34976b6 6077 bfd_boolean skip, relocate;
f21f3fe0 6078
0945cdfd
DJ		 6079 *unresolved_reloc_p = FALSE;
6080
252b5132
RH		 6081 if (sreloc == NULL)
6082 {
83bac4b0
NC		 6083 sreloc = _bfd_elf_get_dynamic_reloc_section (input_bfd, input_section,
6084 ! globals->use_rel);
f21f3fe0 6085
83bac4b0 6086 if (sreloc == NULL)
252b5132 6087 return bfd_reloc_notsupported;
252b5132 6088 }
f21f3fe0 6089
b34976b6
AM		 6090 skip = FALSE;
6091 relocate = FALSE;
f21f3fe0 6092
00a97672 6093 outrel.r_addend = addend;
c629eae0
JJ		 6094 outrel.r_offset =
6095 _bfd_elf_section_offset (output_bfd, info, input_section,
6096 rel->r_offset);
6097 if (outrel.r_offset == (bfd_vma) -1)
b34976b6 6098 skip = TRUE;
0bb2d96a 6099 else if (outrel.r_offset == (bfd_vma) -2)
b34976b6 6100 skip = TRUE, relocate = TRUE;
252b5132
RH		 6101 outrel.r_offset += (input_section->output_section->vma
6102 + input_section->output_offset);
f21f3fe0 6103
252b5132 6104 if (skip)
0bb2d96a 6105 memset (&outrel, 0, sizeof outrel);
5e681ec4
PB		 6106 else if (h != NULL
6107 && h->dynindx != -1
7359ea65 6108 && (!info->shared
5e681ec4 6109 || !info->symbolic
f5385ebf 6110 || !h->def_regular))
5e681ec4 6111 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
252b5132
RH		 6112 else
6113 {
a16385dc
MM		 6114 int symbol;
6115
5e681ec4 6116 /* This symbol is local, or marked to become local. */
b7693d02
DJ		 6117 if (sym_flags == STT_ARM_TFUNC)
6118 value |= 1;
a16385dc 6119 if (globals->symbian_p)
6366ff1e 6120 {
74541ad4
AM		 6121 asection *osec;
6122
6366ff1e
MM		 6123 /* On Symbian OS, the data segment and text segement
6124 can be relocated independently. Therefore, we
6125 must indicate the segment to which this
6126 relocation is relative. The BPABI allows us to
6127 use any symbol in the right segment; we just use
6128 the section symbol as it is convenient. (We
6129 cannot use the symbol given by "h" directly as it
74541ad4
AM		 6130 will not appear in the dynamic symbol table.)
6131
6132 Note that the dynamic linker ignores the section
6133 symbol value, so we don't subtract osec->vma
6134 from the emitted reloc addend. */
10dbd1f3 6135 if (sym_sec)
74541ad4 6136 osec = sym_sec->output_section;
10dbd1f3 6137 else
74541ad4
AM		 6138 osec = input_section->output_section;
6139 symbol = elf_section_data (osec)->dynindx;
6140 if (symbol == 0)
6141 {
6142 struct elf_link_hash_table *htab = elf_hash_table (info);
6143
6144 if ((osec->flags & SEC_READONLY) == 0
6145 && htab->data_index_section != NULL)
6146 osec = htab->data_index_section;
6147 else
6148 osec = htab->text_index_section;
6149 symbol = elf_section_data (osec)->dynindx;
6150 }
6366ff1e
MM		 6151 BFD_ASSERT (symbol != 0);
6152 }
a16385dc
MM		 6153 else
6154 /* On SVR4-ish systems, the dynamic loader cannot
6155 relocate the text and data segments independently,
6156 so the symbol does not matter. */
6157 symbol = 0;
6158 outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
00a97672
RS		 6159 if (globals->use_rel)
6160 relocate = TRUE;
6161 else
6162 outrel.r_addend += value;
252b5132 6163 }
f21f3fe0 6164
947216bf 6165 loc = sreloc->contents;
00a97672
RS		 6166 loc += sreloc->reloc_count++ * RELOC_SIZE (globals);
6167 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
9a5aca8c 6168
f21f3fe0 6169 /* If this reloc is against an external symbol, we do not want to
252b5132 6170 fiddle with the addend. Otherwise, we need to include the symbol
9b485d32 6171 value so that it becomes an addend for the dynamic reloc. */
252b5132
RH		 6172 if (! relocate)
6173 return bfd_reloc_ok;
9a5aca8c 6174
f21f3fe0 6175 return _bfd_final_link_relocate (howto, input_bfd, input_section,
252b5132
RH		 6176 contents, rel->r_offset, value,
6177 (bfd_vma) 0);
6178 }
6179 else switch (r_type)
6180 {
00a97672
RS		 6181 case R_ARM_ABS12:
6182 return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
6183
dfc5f959 6184 case R_ARM_XPC25: /* Arm BLX instruction. */
5b5bb741
PB		 6185 case R_ARM_CALL:
6186 case R_ARM_JUMP24:
8029a119 6187 case R_ARM_PC24: /* Arm B/BL instruction. */
7359ea65 6188 case R_ARM_PLT32:
906e58ca
NC		 6189 {
6190 bfd_vma from;
6191 bfd_signed_vma branch_offset;
6192 struct elf32_arm_stub_hash_entry *stub_entry = NULL;
6193
dfc5f959 6194 if (r_type == R_ARM_XPC25)
252b5132 6195 {
dfc5f959
NC		 6196 /* Check for Arm calling Arm function. */
6197 /* FIXME: Should we translate the instruction into a BL
6198 instruction instead ? */
6199 if (sym_flags != STT_ARM_TFUNC)
d003868e
AM		 6200 (*_bfd_error_handler)
6201 (_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
6202 input_bfd,
6203 h ? h->root.root.string : "(local)");
dfc5f959 6204 }
155d87d7 6205 else if (r_type == R_ARM_PC24)
dfc5f959
NC		 6206 {
6207 /* Check for Arm calling Thumb function. */
6208 if (sym_flags == STT_ARM_TFUNC)
6209 {
f2a9dd69
DJ		 6210 if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
6211 output_bfd, input_section,
6212 hit_data, sym_sec, rel->r_offset,
6213 signed_addend, value,
6214 error_message))
6215 return bfd_reloc_ok;
6216 else
6217 return bfd_reloc_dangerous;
dfc5f959 6218 }
252b5132 6219 }
ba96a88f 6220
906e58ca 6221 /* Check if a stub has to be inserted because the
8029a119 6222 destination is too far or we are changing mode. */
155d87d7
CL		 6223 if ( r_type == R_ARM_CALL
6224 || r_type == R_ARM_JUMP24
6225 || r_type == R_ARM_PLT32)
906e58ca 6226 {
5fa9e92f
CL		 6227 /* If the call goes through a PLT entry, make sure to
6228 check distance to the right destination address. */
6229 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
6230 {
6231 value = (splt->output_section->vma
6232 + splt->output_offset
6233 + h->plt.offset);
6234 *unresolved_reloc_p = FALSE;
6235 }
6236
6237 from = (input_section->output_section->vma
6238 + input_section->output_offset
6239 + rel->r_offset);
6240 branch_offset = (bfd_signed_vma)(value - from);
6241
906e58ca
NC		 6242 if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET
6243 || branch_offset < ARM_MAX_BWD_BRANCH_OFFSET
155d87d7
CL		 6244 || ((sym_flags == STT_ARM_TFUNC)
6245 && (((r_type == R_ARM_CALL) && !globals->use_blx)
6246 || (r_type == R_ARM_JUMP24)
6247 || (r_type == R_ARM_PLT32) ))
6248 )
906e58ca
NC		 6249 {
6250 /* The target is out of reach, so redirect the
6251 branch to the local stub for this function. */
6252
6253 stub_entry = elf32_arm_get_stub_entry (input_section,
6254 sym_sec, h,
6255 rel, globals);
6256 if (stub_entry != NULL)
6257 value = (stub_entry->stub_offset
6258 + stub_entry->stub_sec->output_offset
6259 + stub_entry->stub_sec->output_section->vma);
6260 }
6261 }
6262
dea514f5
PB		 6263 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
6264 where:
6265 S is the address of the symbol in the relocation.
6266 P is address of the instruction being relocated.
6267 A is the addend (extracted from the instruction) in bytes.
6268
6269 S is held in 'value'.
6270 P is the base address of the section containing the
6271 instruction plus the offset of the reloc into that
6272 section, ie:
6273 (input_section->output_section->vma +
6274 input_section->output_offset +
6275 rel->r_offset).
6276 A is the addend, converted into bytes, ie:
6277 (signed_addend * 4)
6278
6279 Note: None of these operations have knowledge of the pipeline
6280 size of the processor, thus it is up to the assembler to
6281 encode this information into the addend. */
6282 value -= (input_section->output_section->vma
6283 + input_section->output_offset);
6284 value -= rel->r_offset;
4e7fd91e
PB		 6285 if (globals->use_rel)
6286 value += (signed_addend << howto->size);
6287 else
6288 /* RELA addends do not have to be adjusted by howto->size. */
6289 value += signed_addend;
23080146 6290
dcb5e6e6
NC		 6291 signed_addend = value;
6292 signed_addend >>= howto->rightshift;
9a5aca8c 6293
5ab79981 6294 /* A branch to an undefined weak symbol is turned into a jump to
82b5c97a
CL		 6295 the next instruction unless a PLT entry will be created. */
6296 if (h && h->root.type == bfd_link_hash_undefweak
6297 && !(splt != NULL && h->plt.offset != (bfd_vma) -1))
5ab79981
PB		 6298 {
6299 value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000)
6300 | 0x0affffff;
6301 }
6302 else
59f2c4e7 6303 {
9b485d32 6304 /* Perform a signed range check. */
dcb5e6e6 6305 if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
59f2c4e7
NC		 6306 || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
6307 return bfd_reloc_overflow;
9a5aca8c 6308
5ab79981 6309 addend = (value & 2);
39b41c9c 6310
5ab79981
PB		 6311 value = (signed_addend & howto->dst_mask)
6312 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
39b41c9c 6313
5ab79981
PB		 6314 if (r_type == R_ARM_CALL)
6315 {
155d87d7
CL		 6316 /* Set the H bit in the BLX instruction. */
6317 if (sym_flags == STT_ARM_TFUNC)
6318 {
6319 if (addend)
6320 value |= (1 << 24);
6321 else
6322 value &= ~(bfd_vma)(1 << 24);
6323 }
6324
5ab79981 6325 /* Select the correct instruction (BL or BLX). */
906e58ca 6326 /* Only if we are not handling a BL to a stub. In this
8029a119 6327 case, mode switching is performed by the stub. */
906e58ca 6328 if (sym_flags == STT_ARM_TFUNC && !stub_entry)
5ab79981
PB		 6329 value |= (1 << 28);
6330 else
6331 {
6332 value &= ~(bfd_vma)(1 << 28);
6333 value |= (1 << 24);
6334 }
39b41c9c
PB		 6335 }
6336 }
906e58ca 6337 }
252b5132 6338 break;
f21f3fe0 6339
252b5132
RH		 6340 case R_ARM_ABS32:
6341 value += addend;
6342 if (sym_flags == STT_ARM_TFUNC)
6343 value |= 1;
6344 break;
f21f3fe0 6345
bb224fc3
MS		 6346 case R_ARM_ABS32_NOI:
6347 value += addend;
6348 break;
6349
252b5132 6350 case R_ARM_REL32:
a8bc6c78
PB		 6351 value += addend;
6352 if (sym_flags == STT_ARM_TFUNC)
6353 value |= 1;
252b5132 6354 value -= (input_section->output_section->vma
62efb346 6355 + input_section->output_offset + rel->r_offset);
252b5132 6356 break;
eb043451 6357
bb224fc3
MS		 6358 case R_ARM_REL32_NOI:
6359 value += addend;
6360 value -= (input_section->output_section->vma
6361 + input_section->output_offset + rel->r_offset);
6362 break;
6363
eb043451
PB		 6364 case R_ARM_PREL31:
6365 value -= (input_section->output_section->vma
6366 + input_section->output_offset + rel->r_offset);
6367 value += signed_addend;
6368 if (! h || h->root.type != bfd_link_hash_undefweak)
6369 {
8029a119 6370 /* Check for overflow. */
eb043451
PB		 6371 if ((value ^ (value >> 1)) & (1 << 30))
6372 return bfd_reloc_overflow;
6373 }
6374 value &= 0x7fffffff;
6375 value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
6376 if (sym_flags == STT_ARM_TFUNC)
6377 value |= 1;
6378 break;
252b5132 6379 }
f21f3fe0 6380
252b5132
RH		 6381 bfd_put_32 (input_bfd, value, hit_data);
6382 return bfd_reloc_ok;
6383
6384 case R_ARM_ABS8:
6385 value += addend;
6386 if ((long) value > 0x7f || (long) value < -0x80)
6387 return bfd_reloc_overflow;
6388
6389 bfd_put_8 (input_bfd, value, hit_data);
6390 return bfd_reloc_ok;
6391
6392 case R_ARM_ABS16:
6393 value += addend;
6394
6395 if ((long) value > 0x7fff || (long) value < -0x8000)
6396 return bfd_reloc_overflow;
6397
6398 bfd_put_16 (input_bfd, value, hit_data);
6399 return bfd_reloc_ok;
6400
252b5132 6401 case R_ARM_THM_ABS5:
9b485d32 6402 /* Support ldr and str instructions for the thumb. */
4e7fd91e
PB		 6403 if (globals->use_rel)
6404 {
6405 /* Need to refetch addend. */
6406 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
6407 /* ??? Need to determine shift amount from operand size. */
6408 addend >>= howto->rightshift;
6409 }
252b5132
RH		 6410 value += addend;
6411
6412 /* ??? Isn't value unsigned? */
6413 if ((long) value > 0x1f || (long) value < -0x10)
6414 return bfd_reloc_overflow;
6415
6416 /* ??? Value needs to be properly shifted into place first. */
6417 value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
6418 bfd_put_16 (input_bfd, value, hit_data);
6419 return bfd_reloc_ok;
6420
2cab6cc3
MS		 6421 case R_ARM_THM_ALU_PREL_11_0:
6422 /* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
6423 {
6424 bfd_vma insn;
6425 bfd_signed_vma relocation;
6426
6427 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
6428 | bfd_get_16 (input_bfd, hit_data + 2);
6429
6430 if (globals->use_rel)
6431 {
6432 signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4)
6433 | ((insn & (1 << 26)) >> 15);
6434 if (insn & 0xf00000)
6435 signed_addend = -signed_addend;
6436 }
6437
6438 relocation = value + signed_addend;
6439 relocation -= (input_section->output_section->vma
6440 + input_section->output_offset
6441 + rel->r_offset);
6442
6443 value = abs (relocation);
6444
6445 if (value >= 0x1000)
6446 return bfd_reloc_overflow;
6447
6448 insn = (insn & 0xfb0f8f00) | (value & 0xff)
6449 | ((value & 0x700) << 4)
6450 | ((value & 0x800) << 15);
6451 if (relocation < 0)
6452 insn |= 0xa00000;
6453
6454 bfd_put_16 (input_bfd, insn >> 16, hit_data);
6455 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
6456
6457 return bfd_reloc_ok;
6458 }
6459
6460 case R_ARM_THM_PC12:
6461 /* Corresponds to: ldr.w reg, [pc, #offset]. */
6462 {
6463 bfd_vma insn;
6464 bfd_signed_vma relocation;
6465
6466 insn = (bfd_get_16 (input_bfd, hit_data) << 16)
6467 | bfd_get_16 (input_bfd, hit_data + 2);
6468
6469 if (globals->use_rel)
6470 {
6471 signed_addend = insn & 0xfff;
6472 if (!(insn & (1 << 23)))
6473 signed_addend = -signed_addend;
6474 }
6475
6476 relocation = value + signed_addend;
6477 relocation -= (input_section->output_section->vma
6478 + input_section->output_offset
6479 + rel->r_offset);
6480
6481 value = abs (relocation);
6482
6483 if (value >= 0x1000)
6484 return bfd_reloc_overflow;
6485
6486 insn = (insn & 0xff7ff000) | value;
6487 if (relocation >= 0)
6488 insn |= (1 << 23);
6489
6490 bfd_put_16 (input_bfd, insn >> 16, hit_data);
6491 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
6492
6493 return bfd_reloc_ok;
6494 }
6495
dfc5f959 6496 case R_ARM_THM_XPC22:
c19d1205 6497 case R_ARM_THM_CALL:
bd97cb95 6498 case R_ARM_THM_JUMP24:
dfc5f959 6499 /* Thumb BL (branch long instruction). */
252b5132 6500 {
b34976b6 6501 bfd_vma relocation;
e95de063 6502 bfd_vma reloc_sign;
b34976b6
AM		 6503 bfd_boolean overflow = FALSE;
6504 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
6505 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
e95de063
MS		 6506 bfd_signed_vma reloc_signed_max;
6507 bfd_signed_vma reloc_signed_min;
b34976b6 6508 bfd_vma check;
252b5132 6509 bfd_signed_vma signed_check;
e95de063
MS		 6510 int bitsize;
6511 int thumb2 = using_thumb2 (globals);
252b5132 6512
5ab79981 6513 /* A branch to an undefined weak symbol is turned into a jump to
19540007
JM		 6514 the next instruction unless a PLT entry will be created. */
6515 if (h && h->root.type == bfd_link_hash_undefweak
6516 && !(splt != NULL && h->plt.offset != (bfd_vma) -1))
5ab79981
PB		 6517 {
6518 bfd_put_16 (input_bfd, 0xe000, hit_data);
6519 bfd_put_16 (input_bfd, 0xbf00, hit_data + 2);
6520 return bfd_reloc_ok;
6521 }
6522
e95de063
MS		 6523 /* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
6524 with Thumb-1) involving the J1 and J2 bits. */
4e7fd91e
PB		 6525 if (globals->use_rel)
6526 {
e95de063
MS		 6527 bfd_vma s = (upper_insn & (1 << 10)) >> 10;
6528 bfd_vma upper = upper_insn & 0x3ff;
6529 bfd_vma lower = lower_insn & 0x7ff;
6530 bfd_vma j1 = (lower_insn & (1 << 13)) >> 13;
6531 bfd_vma j2 = (lower_insn & (1 << 11)) >> 11;
6532 bfd_vma i1 = j1 ^ s ? 0 : 1;
6533 bfd_vma i2 = j2 ^ s ? 0 : 1;
6534
6535 addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1);
6536 /* Sign extend. */
6537 addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24);
6538
4e7fd91e
PB		 6539 signed_addend = addend;
6540 }
cb1afa5c 6541
dfc5f959
NC		 6542 if (r_type == R_ARM_THM_XPC22)
6543 {
6544 /* Check for Thumb to Thumb call. */
6545 /* FIXME: Should we translate the instruction into a BL
6546 instruction instead ? */
6547 if (sym_flags == STT_ARM_TFUNC)
d003868e
AM		 6548 (*_bfd_error_handler)
6549 (_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
6550 input_bfd,
6551 h ? h->root.root.string : "(local)");
dfc5f959
NC		 6552 }
6553 else
252b5132 6554 {
dfc5f959
NC		 6555 /* If it is not a call to Thumb, assume call to Arm.
6556 If it is a call relative to a section name, then it is not a
b7693d02
DJ		 6557 function call at all, but rather a long jump. Calls through
6558 the PLT do not require stubs. */
6559 if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION
6560 && (h == NULL || splt == NULL
6561 || h->plt.offset == (bfd_vma) -1))
dfc5f959 6562 {
bd97cb95 6563 if (globals->use_blx && r_type == R_ARM_THM_CALL)
39b41c9c
PB		 6564 {
6565 /* Convert BL to BLX. */
6566 lower_insn = (lower_insn & ~0x1000) | 0x0800;
6567 }
155d87d7
CL		 6568 else if (( r_type != R_ARM_THM_CALL)
6569 && (r_type != R_ARM_THM_JUMP24))
8029a119
NC		 6570 {
6571 if (elf32_thumb_to_arm_stub
6572 (info, sym_name, input_bfd, output_bfd, input_section,
6573 hit_data, sym_sec, rel->r_offset, signed_addend, value,
6574 error_message))
6575 return bfd_reloc_ok;
6576 else
6577 return bfd_reloc_dangerous;
6578 }
da5938a2 6579 }
bd97cb95
DJ		 6580 else if (sym_flags == STT_ARM_TFUNC && globals->use_blx
6581 && r_type == R_ARM_THM_CALL)
39b41c9c
PB		 6582 {
6583 /* Make sure this is a BL. */
6584 lower_insn |= 0x1800;
6585 }
252b5132 6586 }
f21f3fe0 6587
b7693d02
DJ		 6588 /* Handle calls via the PLT. */
6589 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
6590 {
6591 value = (splt->output_section->vma
6592 + splt->output_offset
6593 + h->plt.offset);
bd97cb95 6594 if (globals->use_blx && r_type == R_ARM_THM_CALL)
33bfe774
JB		 6595 {
6596 /* If the Thumb BLX instruction is available, convert the
6597 BL to a BLX instruction to call the ARM-mode PLT entry. */
39b41c9c 6598 lower_insn = (lower_insn & ~0x1000) | 0x0800;
33bfe774
JB		 6599 }
6600 else
6601 /* Target the Thumb stub before the ARM PLT entry. */
6602 value -= PLT_THUMB_STUB_SIZE;
0945cdfd 6603 *unresolved_reloc_p = FALSE;
b7693d02
DJ		 6604 }
6605
155d87d7 6606 if (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24)
906e58ca
NC		 6607 {
6608 /* Check if a stub has to be inserted because the destination
8029a119 6609 is too far. */
906e58ca
NC		 6610 bfd_vma from;
6611 bfd_signed_vma branch_offset;
6612 struct elf32_arm_stub_hash_entry *stub_entry = NULL;
6613
6614 from = (input_section->output_section->vma
6615 + input_section->output_offset
6616 + rel->r_offset);
6617 branch_offset = (bfd_signed_vma)(value - from);
6618
6619 if ((!thumb2
6620 && (branch_offset > THM_MAX_FWD_BRANCH_OFFSET
6621 || (branch_offset < THM_MAX_BWD_BRANCH_OFFSET)))
6622 ||
6623 (thumb2
6624 && (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET
f4ac8484 6625 || (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))
155d87d7
CL		 6626 || ((sym_flags != STT_ARM_TFUNC)
6627 && (((r_type == R_ARM_THM_CALL) && !globals->use_blx)
6628 || r_type == R_ARM_THM_JUMP24)))
906e58ca
NC		 6629 {
6630 /* The target is out of reach or we are changing modes, so
6631 redirect the branch to the local stub for this
6632 function. */
6633 stub_entry = elf32_arm_get_stub_entry (input_section,
6634 sym_sec, h,
6635 rel, globals);
6636 if (stub_entry != NULL)
6637 value = (stub_entry->stub_offset
6638 + stub_entry->stub_sec->output_offset
6639 + stub_entry->stub_sec->output_section->vma);
6640
f4ac8484 6641 /* If this call becomes a call to Arm, force BLX. */
155d87d7 6642 if (globals->use_blx && (r_type == R_ARM_THM_CALL))
f4ac8484
DJ		 6643 {
6644 if ((stub_entry
6645 && !arm_stub_is_thumb (stub_entry->stub_type))
6646 || (sym_flags != STT_ARM_TFUNC))
6647 lower_insn = (lower_insn & ~0x1000) | 0x0800;
6648 }
906e58ca
NC		 6649 }
6650 }
6651
ba96a88f 6652 relocation = value + signed_addend;
f21f3fe0 6653
252b5132 6654 relocation -= (input_section->output_section->vma
ba96a88f
NC		 6655 + input_section->output_offset
6656 + rel->r_offset);
9a5aca8c 6657
252b5132
RH		 6658 check = relocation >> howto->rightshift;
6659
6660 /* If this is a signed value, the rightshift just dropped
6661 leading 1 bits (assuming twos complement). */
6662 if ((bfd_signed_vma) relocation >= 0)
6663 signed_check = check;
6664 else
6665 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
6666
e95de063
MS		 6667 /* Calculate the permissable maximum and minimum values for
6668 this relocation according to whether we're relocating for
6669 Thumb-2 or not. */
6670 bitsize = howto->bitsize;
6671 if (!thumb2)
6672 bitsize -= 2;
6673 reloc_signed_max = ((1 << (bitsize - 1)) - 1) >> howto->rightshift;
6674 reloc_signed_min = ~reloc_signed_max;
6675
252b5132 6676 /* Assumes two's complement. */
ba96a88f 6677 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
b34976b6 6678 overflow = TRUE;
252b5132 6679
bd97cb95 6680 if ((lower_insn & 0x5000) == 0x4000)
c62e1cc3
NC		 6681 /* For a BLX instruction, make sure that the relocation is rounded up
6682 to a word boundary. This follows the semantics of the instruction
6683 which specifies that bit 1 of the target address will come from bit
6684 1 of the base address. */
6685 relocation = (relocation + 2) & ~ 3;
cb1afa5c 6686
e95de063
MS		 6687 /* Put RELOCATION back into the insn. Assumes two's complement.
6688 We use the Thumb-2 encoding, which is safe even if dealing with
6689 a Thumb-1 instruction by virtue of our overflow check above. */
6690 reloc_sign = (signed_check < 0) ? 1 : 0;
6691 upper_insn = (upper_insn & ~(bfd_vma) 0x7ff)
6692 | ((relocation >> 12) & 0x3ff)
6693 | (reloc_sign << 10);
906e58ca 6694 lower_insn = (lower_insn & ~(bfd_vma) 0x2fff)
e95de063
MS		 6695 | (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13)
6696 | (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11)
6697 | ((relocation >> 1) & 0x7ff);
c62e1cc3 6698
252b5132
RH		 6699 /* Put the relocated value back in the object file: */
6700 bfd_put_16 (input_bfd, upper_insn, hit_data);
6701 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
6702
6703 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
6704 }
6705 break;
6706
c19d1205
ZW		 6707 case R_ARM_THM_JUMP19:
6708 /* Thumb32 conditional branch instruction. */
6709 {
6710 bfd_vma relocation;
6711 bfd_boolean overflow = FALSE;
6712 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
6713 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
a00a1f35
MS		 6714 bfd_signed_vma reloc_signed_max = 0xffffe;
6715 bfd_signed_vma reloc_signed_min = -0x100000;
c19d1205
ZW		 6716 bfd_signed_vma signed_check;
6717
6718 /* Need to refetch the addend, reconstruct the top three bits,
6719 and squish the two 11 bit pieces together. */
6720 if (globals->use_rel)
6721 {
6722 bfd_vma S = (upper_insn & 0x0400) >> 10;
a00a1f35 6723 bfd_vma upper = (upper_insn & 0x003f);
c19d1205
ZW		 6724 bfd_vma J1 = (lower_insn & 0x2000) >> 13;
6725 bfd_vma J2 = (lower_insn & 0x0800) >> 11;
6726 bfd_vma lower = (lower_insn & 0x07ff);
6727
a00a1f35
MS		 6728 upper |= J1 << 6;
6729 upper |= J2 << 7;
6730 upper |= (!S) << 8;
c19d1205
ZW		 6731 upper -= 0x0100; /* Sign extend. */
6732
6733 addend = (upper << 12) | (lower << 1);
6734 signed_addend = addend;
6735 }
6736
bd97cb95
DJ		 6737 /* Handle calls via the PLT. */
6738 if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1)
6739 {
6740 value = (splt->output_section->vma
6741 + splt->output_offset
6742 + h->plt.offset);
6743 /* Target the Thumb stub before the ARM PLT entry. */
6744 value -= PLT_THUMB_STUB_SIZE;
6745 *unresolved_reloc_p = FALSE;
6746 }
6747
c19d1205
ZW		 6748 /* ??? Should handle interworking? GCC might someday try to
6749 use this for tail calls. */
6750
6751 relocation = value + signed_addend;
6752 relocation -= (input_section->output_section->vma
6753 + input_section->output_offset
6754 + rel->r_offset);
a00a1f35 6755 signed_check = (bfd_signed_vma) relocation;
c19d1205 6756
c19d1205
ZW		 6757 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
6758 overflow = TRUE;
6759
6760 /* Put RELOCATION back into the insn. */
6761 {
6762 bfd_vma S = (relocation & 0x00100000) >> 20;
6763 bfd_vma J2 = (relocation & 0x00080000) >> 19;
6764 bfd_vma J1 = (relocation & 0x00040000) >> 18;
6765 bfd_vma hi = (relocation & 0x0003f000) >> 12;
6766 bfd_vma lo = (relocation & 0x00000ffe) >> 1;
6767
a00a1f35 6768 upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi;
c19d1205
ZW		 6769 lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
6770 }
6771
6772 /* Put the relocated value back in the object file: */
6773 bfd_put_16 (input_bfd, upper_insn, hit_data);
6774 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
6775
6776 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
6777 }
6778
6779 case R_ARM_THM_JUMP11:
6780 case R_ARM_THM_JUMP8:
6781 case R_ARM_THM_JUMP6:
51c5503b
NC		 6782 /* Thumb B (branch) instruction). */
6783 {
6cf9e9fe 6784 bfd_signed_vma relocation;
51c5503b
NC		 6785 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
6786 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
51c5503b
NC		 6787 bfd_signed_vma signed_check;
6788
c19d1205
ZW		 6789 /* CZB cannot jump backward. */
6790 if (r_type == R_ARM_THM_JUMP6)
6791 reloc_signed_min = 0;
6792
4e7fd91e 6793 if (globals->use_rel)
6cf9e9fe 6794 {
4e7fd91e
PB		 6795 /* Need to refetch addend. */
6796 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
6797 if (addend & ((howto->src_mask + 1) >> 1))
6798 {
6799 signed_addend = -1;
6800 signed_addend &= ~ howto->src_mask;
6801 signed_addend |= addend;
6802 }
6803 else
6804 signed_addend = addend;
6805 /* The value in the insn has been right shifted. We need to
6806 undo this, so that we can perform the address calculation
6807 in terms of bytes. */
6808 signed_addend <<= howto->rightshift;
6cf9e9fe 6809 }
6cf9e9fe 6810 relocation = value + signed_addend;
51c5503b
NC		 6811
6812 relocation -= (input_section->output_section->vma
6813 + input_section->output_offset
6814 + rel->r_offset);
6815
6cf9e9fe
NC		 6816 relocation >>= howto->rightshift;
6817 signed_check = relocation;
c19d1205
ZW		 6818
6819 if (r_type == R_ARM_THM_JUMP6)
6820 relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
6821 else
6822 relocation &= howto->dst_mask;
51c5503b 6823 relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
cedb70c5 6824
51c5503b
NC		 6825 bfd_put_16 (input_bfd, relocation, hit_data);
6826
6827 /* Assumes two's complement. */
6828 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
6829 return bfd_reloc_overflow;
6830
6831 return bfd_reloc_ok;
6832 }
cedb70c5 6833
8375c36b
PB		 6834 case R_ARM_ALU_PCREL7_0:
6835 case R_ARM_ALU_PCREL15_8:
6836 case R_ARM_ALU_PCREL23_15:
6837 {
6838 bfd_vma insn;
6839 bfd_vma relocation;
6840
6841 insn = bfd_get_32 (input_bfd, hit_data);
4e7fd91e
PB		 6842 if (globals->use_rel)
6843 {
6844 /* Extract the addend. */
6845 addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
6846 signed_addend = addend;
6847 }
8375c36b
PB		 6848 relocation = value + signed_addend;
6849
6850 relocation -= (input_section->output_section->vma
6851 + input_section->output_offset
6852 + rel->r_offset);
6853 insn = (insn & ~0xfff)
6854 | ((howto->bitpos << 7) & 0xf00)
6855 | ((relocation >> howto->bitpos) & 0xff);
6856 bfd_put_32 (input_bfd, value, hit_data);
6857 }
6858 return bfd_reloc_ok;
6859
252b5132
RH		 6860 case R_ARM_GNU_VTINHERIT:
6861 case R_ARM_GNU_VTENTRY:
6862 return bfd_reloc_ok;
6863
c19d1205 6864 case R_ARM_GOTOFF32:
252b5132
RH		 6865 /* Relocation is relative to the start of the
6866 global offset table. */
6867
6868 BFD_ASSERT (sgot != NULL);
6869 if (sgot == NULL)
6870 return bfd_reloc_notsupported;
9a5aca8c 6871
cedb70c5 6872 /* If we are addressing a Thumb function, we need to adjust the
ee29b9fb
RE		 6873 address by one, so that attempts to call the function pointer will
6874 correctly interpret it as Thumb code. */
6875 if (sym_flags == STT_ARM_TFUNC)
6876 value += 1;
6877
252b5132
RH		 6878 /* Note that sgot->output_offset is not involved in this
6879 calculation. We always want the start of .got. If we
6880 define _GLOBAL_OFFSET_TABLE in a different way, as is
6881 permitted by the ABI, we might have to change this
9b485d32 6882 calculation. */
252b5132 6883 value -= sgot->output_section->vma;
f21f3fe0 6884 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17 6885 contents, rel->r_offset, value,
00a97672 6886 rel->r_addend);
252b5132
RH		 6887
6888 case R_ARM_GOTPC:
a7c10850 6889 /* Use global offset table as symbol value. */
252b5132 6890 BFD_ASSERT (sgot != NULL);
f21f3fe0 6891
252b5132
RH		 6892 if (sgot == NULL)
6893 return bfd_reloc_notsupported;
6894
0945cdfd 6895 *unresolved_reloc_p = FALSE;
252b5132 6896 value = sgot->output_section->vma;
f21f3fe0 6897 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17 6898 contents, rel->r_offset, value,
00a97672 6899 rel->r_addend);
f21f3fe0 6900
252b5132 6901 case R_ARM_GOT32:
eb043451 6902 case R_ARM_GOT_PREL:
252b5132 6903 /* Relocation is to the entry for this symbol in the
9b485d32 6904 global offset table. */
252b5132
RH		 6905 if (sgot == NULL)
6906 return bfd_reloc_notsupported;
f21f3fe0 6907
252b5132
RH		 6908 if (h != NULL)
6909 {
6910 bfd_vma off;
5e681ec4 6911 bfd_boolean dyn;
f21f3fe0 6912
252b5132
RH		 6913 off = h->got.offset;
6914 BFD_ASSERT (off != (bfd_vma) -1);
5e681ec4 6915 dyn = globals->root.dynamic_sections_created;
f21f3fe0 6916
5e681ec4 6917 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
50d6c878 6918 || (info->shared
5e681ec4
PB		 6919 && SYMBOL_REFERENCES_LOCAL (info, h))
6920 || (ELF_ST_VISIBILITY (h->other)
6921 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 6922 {
6923 /* This is actually a static link, or it is a -Bsymbolic link
6924 and the symbol is defined locally. We must initialize this
6925 entry in the global offset table. Since the offset must
6926 always be a multiple of 4, we use the least significant bit
6927 to record whether we have initialized it already.
f21f3fe0 6928
00a97672 6929 When doing a dynamic link, we create a .rel(a).got relocation
f21f3fe0 6930 entry to initialize the value. This is done in the
9b485d32 6931 finish_dynamic_symbol routine. */
252b5132
RH		 6932 if ((off & 1) != 0)
6933 off &= ~1;
6934 else
6935 {
ee29b9fb
RE		 6936 /* If we are addressing a Thumb function, we need to
6937 adjust the address by one, so that attempts to
6938 call the function pointer will correctly
6939 interpret it as Thumb code. */
6940 if (sym_flags == STT_ARM_TFUNC)
6941 value |= 1;
6942
252b5132
RH		 6943 bfd_put_32 (output_bfd, value, sgot->contents + off);
6944 h->got.offset |= 1;
6945 }
6946 }
0945cdfd
DJ		 6947 else
6948 *unresolved_reloc_p = FALSE;
f21f3fe0 6949
252b5132
RH		 6950 value = sgot->output_offset + off;
6951 }
6952 else
6953 {
6954 bfd_vma off;
f21f3fe0 6955
252b5132
RH		 6956 BFD_ASSERT (local_got_offsets != NULL &&
6957 local_got_offsets[r_symndx] != (bfd_vma) -1);
f21f3fe0 6958
252b5132 6959 off = local_got_offsets[r_symndx];
f21f3fe0 6960
252b5132
RH		 6961 /* The offset must always be a multiple of 4. We use the
6962 least significant bit to record whether we have already
9b485d32 6963 generated the necessary reloc. */
252b5132
RH		 6964 if ((off & 1) != 0)
6965 off &= ~1;
6966 else
6967 {
b7693d02
DJ		 6968 /* If we are addressing a Thumb function, we need to
6969 adjust the address by one, so that attempts to
6970 call the function pointer will correctly
6971 interpret it as Thumb code. */
6972 if (sym_flags == STT_ARM_TFUNC)
6973 value |= 1;
6974
00a97672
RS		 6975 if (globals->use_rel)
6976 bfd_put_32 (output_bfd, value, sgot->contents + off);
f21f3fe0 6977
252b5132
RH		 6978 if (info->shared)
6979 {
6980 asection * srelgot;
947216bf
AM		 6981 Elf_Internal_Rela outrel;
6982 bfd_byte *loc;
f21f3fe0 6983
00a97672
RS		 6984 srelgot = (bfd_get_section_by_name
6985 (dynobj, RELOC_SECTION (globals, ".got")));
252b5132 6986 BFD_ASSERT (srelgot != NULL);
f21f3fe0 6987
00a97672 6988 outrel.r_addend = addend + value;
252b5132 6989 outrel.r_offset = (sgot->output_section->vma
f21f3fe0 6990 + sgot->output_offset
252b5132
RH		 6991 + off);
6992 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
947216bf 6993 loc = srelgot->contents;
00a97672
RS		 6994 loc += srelgot->reloc_count++ * RELOC_SIZE (globals);
6995 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
252b5132 6996 }
f21f3fe0 6997
252b5132
RH		 6998 local_got_offsets[r_symndx] |= 1;
6999 }
f21f3fe0 7000
252b5132
RH		 7001 value = sgot->output_offset + off;
7002 }
eb043451
PB		 7003 if (r_type != R_ARM_GOT32)
7004 value += sgot->output_section->vma;
9a5aca8c 7005
f21f3fe0 7006 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17 7007 contents, rel->r_offset, value,
00a97672 7008 rel->r_addend);
f21f3fe0 7009
ba93b8ac
DJ		 7010 case R_ARM_TLS_LDO32:
7011 value = value - dtpoff_base (info);
7012
7013 return _bfd_final_link_relocate (howto, input_bfd, input_section,
00a97672
RS		 7014 contents, rel->r_offset, value,
7015 rel->r_addend);
ba93b8ac
DJ		 7016
7017 case R_ARM_TLS_LDM32:
7018 {
7019 bfd_vma off;
7020
7021 if (globals->sgot == NULL)
7022 abort ();
7023
7024 off = globals->tls_ldm_got.offset;
7025
7026 if ((off & 1) != 0)
7027 off &= ~1;
7028 else
7029 {
7030 /* If we don't know the module number, create a relocation
7031 for it. */
7032 if (info->shared)
7033 {
7034 Elf_Internal_Rela outrel;
7035 bfd_byte *loc;
7036
7037 if (globals->srelgot == NULL)
7038 abort ();
7039
00a97672 7040 outrel.r_addend = 0;
ba93b8ac
DJ		 7041 outrel.r_offset = (globals->sgot->output_section->vma
7042 + globals->sgot->output_offset + off);
7043 outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
7044
00a97672
RS		 7045 if (globals->use_rel)
7046 bfd_put_32 (output_bfd, outrel.r_addend,
7047 globals->sgot->contents + off);
ba93b8ac
DJ		 7048
7049 loc = globals->srelgot->contents;
00a97672
RS		 7050 loc += globals->srelgot->reloc_count++ * RELOC_SIZE (globals);
7051 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac
DJ		 7052 }
7053 else
7054 bfd_put_32 (output_bfd, 1, globals->sgot->contents + off);
7055
7056 globals->tls_ldm_got.offset |= 1;
7057 }
7058
906e58ca 7059 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
ba93b8ac
DJ		 7060 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
7061
7062 return _bfd_final_link_relocate (howto, input_bfd, input_section,
7063 contents, rel->r_offset, value,
00a97672 7064 rel->r_addend);
ba93b8ac
DJ		 7065 }
7066
7067 case R_ARM_TLS_GD32:
7068 case R_ARM_TLS_IE32:
7069 {
7070 bfd_vma off;
7071 int indx;
7072 char tls_type;
7073
7074 if (globals->sgot == NULL)
7075 abort ();
7076
7077 indx = 0;
7078 if (h != NULL)
7079 {
7080 bfd_boolean dyn;
7081 dyn = globals->root.dynamic_sections_created;
7082 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7083 && (!info->shared
7084 || !SYMBOL_REFERENCES_LOCAL (info, h)))
7085 {
7086 *unresolved_reloc_p = FALSE;
7087 indx = h->dynindx;
7088 }
7089 off = h->got.offset;
7090 tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
7091 }
7092 else
7093 {
7094 if (local_got_offsets == NULL)
7095 abort ();
7096 off = local_got_offsets[r_symndx];
7097 tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
7098 }
7099
7100 if (tls_type == GOT_UNKNOWN)
7101 abort ();
7102
7103 if ((off & 1) != 0)
7104 off &= ~1;
7105 else
7106 {
7107 bfd_boolean need_relocs = FALSE;
7108 Elf_Internal_Rela outrel;
7109 bfd_byte *loc = NULL;
7110 int cur_off = off;
7111
7112 /* The GOT entries have not been initialized yet. Do it
7113 now, and emit any relocations. If both an IE GOT and a
7114 GD GOT are necessary, we emit the GD first. */
7115
7116 if ((info->shared || indx != 0)
7117 && (h == NULL
7118 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
7119 || h->root.type != bfd_link_hash_undefweak))
7120 {
7121 need_relocs = TRUE;
7122 if (globals->srelgot == NULL)
7123 abort ();
7124 loc = globals->srelgot->contents;
00a97672 7125 loc += globals->srelgot->reloc_count * RELOC_SIZE (globals);
ba93b8ac
DJ		 7126 }
7127
7128 if (tls_type & GOT_TLS_GD)
7129 {
7130 if (need_relocs)
7131 {
00a97672 7132 outrel.r_addend = 0;
ba93b8ac 7133 outrel.r_offset = (globals->sgot->output_section->vma
00a97672
RS		 7134 + globals->sgot->output_offset
7135 + cur_off);
ba93b8ac 7136 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
ba93b8ac 7137
00a97672
RS		 7138 if (globals->use_rel)
7139 bfd_put_32 (output_bfd, outrel.r_addend,
7140 globals->sgot->contents + cur_off);
7141
7142 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac 7143 globals->srelgot->reloc_count++;
00a97672 7144 loc += RELOC_SIZE (globals);
ba93b8ac
DJ		 7145
7146 if (indx == 0)
7147 bfd_put_32 (output_bfd, value - dtpoff_base (info),
7148 globals->sgot->contents + cur_off + 4);
7149 else
7150 {
00a97672 7151 outrel.r_addend = 0;
ba93b8ac
DJ		 7152 outrel.r_info = ELF32_R_INFO (indx,
7153 R_ARM_TLS_DTPOFF32);
7154 outrel.r_offset += 4;
00a97672
RS		 7155
7156 if (globals->use_rel)
7157 bfd_put_32 (output_bfd, outrel.r_addend,
7158 globals->sgot->contents + cur_off + 4);
7159
7160
7161 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac 7162 globals->srelgot->reloc_count++;
00a97672 7163 loc += RELOC_SIZE (globals);
ba93b8ac
DJ		 7164 }
7165 }
7166 else
7167 {
7168 /* If we are not emitting relocations for a
7169 general dynamic reference, then we must be in a
7170 static link or an executable link with the
7171 symbol binding locally. Mark it as belonging
7172 to module 1, the executable. */
7173 bfd_put_32 (output_bfd, 1,
7174 globals->sgot->contents + cur_off);
7175 bfd_put_32 (output_bfd, value - dtpoff_base (info),
7176 globals->sgot->contents + cur_off + 4);
7177 }
7178
7179 cur_off += 8;
7180 }
7181
7182 if (tls_type & GOT_TLS_IE)
7183 {
7184 if (need_relocs)
7185 {
00a97672
RS		 7186 if (indx == 0)
7187 outrel.r_addend = value - dtpoff_base (info);
7188 else
7189 outrel.r_addend = 0;
ba93b8ac
DJ		 7190 outrel.r_offset = (globals->sgot->output_section->vma
7191 + globals->sgot->output_offset
7192 + cur_off);
7193 outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
7194
00a97672
RS		 7195 if (globals->use_rel)
7196 bfd_put_32 (output_bfd, outrel.r_addend,
ba93b8ac
DJ		 7197 globals->sgot->contents + cur_off);
7198
00a97672 7199 SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
ba93b8ac 7200 globals->srelgot->reloc_count++;
00a97672 7201 loc += RELOC_SIZE (globals);
ba93b8ac
DJ		 7202 }
7203 else
7204 bfd_put_32 (output_bfd, tpoff (info, value),
7205 globals->sgot->contents + cur_off);
7206 cur_off += 4;
7207 }
7208
7209 if (h != NULL)
7210 h->got.offset |= 1;
7211 else
7212 local_got_offsets[r_symndx] |= 1;
7213 }
7214
7215 if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
7216 off += 8;
906e58ca 7217 value = globals->sgot->output_section->vma + globals->sgot->output_offset + off
ba93b8ac
DJ		 7218 - (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
7219
7220 return _bfd_final_link_relocate (howto, input_bfd, input_section,
7221 contents, rel->r_offset, value,
00a97672 7222 rel->r_addend);
ba93b8ac
DJ		 7223 }
7224
7225 case R_ARM_TLS_LE32:
7226 if (info->shared)
7227 {
7228 (*_bfd_error_handler)
7229 (_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
7230 input_bfd, input_section,
7231 (long) rel->r_offset, howto->name);
906e58ca 7232 return FALSE;
ba93b8ac
DJ		 7233 }
7234 else
7235 value = tpoff (info, value);
906e58ca 7236
ba93b8ac 7237 return _bfd_final_link_relocate (howto, input_bfd, input_section,
00a97672
RS		 7238 contents, rel->r_offset, value,
7239 rel->r_addend);
ba93b8ac 7240
319850b4
JB		 7241 case R_ARM_V4BX:
7242 if (globals->fix_v4bx)
845b51d6
PB		 7243 {
7244 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
319850b4 7245
845b51d6
PB		 7246 /* Ensure that we have a BX instruction. */
7247 BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
319850b4 7248
845b51d6
PB		 7249 if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf)
7250 {
7251 /* Branch to veneer. */
7252 bfd_vma glue_addr;
7253 glue_addr = elf32_arm_bx_glue (info, insn & 0xf);
7254 glue_addr -= input_section->output_section->vma
7255 + input_section->output_offset
7256 + rel->r_offset + 8;
7257 insn = (insn & 0xf0000000) | 0x0a000000
7258 | ((glue_addr >> 2) & 0x00ffffff);
7259 }
7260 else
7261 {
7262 /* Preserve Rm (lowest four bits) and the condition code
7263 (highest four bits). Other bits encode MOV PC,Rm. */
7264 insn = (insn & 0xf000000f) | 0x01a0f000;
7265 }
319850b4 7266
845b51d6
PB		 7267 bfd_put_32 (input_bfd, insn, hit_data);
7268 }
319850b4
JB		 7269 return bfd_reloc_ok;
7270
b6895b4f
PB		 7271 case R_ARM_MOVW_ABS_NC:
7272 case R_ARM_MOVT_ABS:
7273 case R_ARM_MOVW_PREL_NC:
7274 case R_ARM_MOVT_PREL:
92f5d02b
MS		 7275 /* Until we properly support segment-base-relative addressing then
7276 we assume the segment base to be zero, as for the group relocations.
7277 Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
7278 and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
7279 case R_ARM_MOVW_BREL_NC:
7280 case R_ARM_MOVW_BREL:
7281 case R_ARM_MOVT_BREL:
b6895b4f
PB		 7282 {
7283 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7284
7285 if (globals->use_rel)
7286 {
7287 addend = ((insn >> 4) & 0xf000) | (insn & 0xfff);
39623e12 7288 signed_addend = (addend ^ 0x8000) - 0x8000;
b6895b4f 7289 }
92f5d02b 7290
b6895b4f 7291 value += signed_addend;
b6895b4f
PB		 7292
7293 if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL)
7294 value -= (input_section->output_section->vma
7295 + input_section->output_offset + rel->r_offset);
7296
92f5d02b
MS		 7297 if (r_type == R_ARM_MOVW_BREL && value >= 0x10000)
7298 return bfd_reloc_overflow;
7299
7300 if (sym_flags == STT_ARM_TFUNC)
7301 value |= 1;
7302
7303 if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL
7304 || r_type == R_ARM_MOVT_BREL)
b6895b4f
PB		 7305 value >>= 16;
7306
7307 insn &= 0xfff0f000;
7308 insn |= value & 0xfff;
7309 insn |= (value & 0xf000) << 4;
7310 bfd_put_32 (input_bfd, insn, hit_data);
7311 }
7312 return bfd_reloc_ok;
7313
7314 case R_ARM_THM_MOVW_ABS_NC:
7315 case R_ARM_THM_MOVT_ABS:
7316 case R_ARM_THM_MOVW_PREL_NC:
7317 case R_ARM_THM_MOVT_PREL:
92f5d02b
MS		 7318 /* Until we properly support segment-base-relative addressing then
7319 we assume the segment base to be zero, as for the above relocations.
7320 Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
7321 R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
7322 as R_ARM_THM_MOVT_ABS. */
7323 case R_ARM_THM_MOVW_BREL_NC:
7324 case R_ARM_THM_MOVW_BREL:
7325 case R_ARM_THM_MOVT_BREL:
b6895b4f
PB		 7326 {
7327 bfd_vma insn;
906e58ca 7328
b6895b4f
PB		 7329 insn = bfd_get_16 (input_bfd, hit_data) << 16;
7330 insn |= bfd_get_16 (input_bfd, hit_data + 2);
7331
7332 if (globals->use_rel)
7333 {
7334 addend = ((insn >> 4) & 0xf000)
7335 | ((insn >> 15) & 0x0800)
7336 | ((insn >> 4) & 0x0700)
7337 | (insn & 0x00ff);
39623e12 7338 signed_addend = (addend ^ 0x8000) - 0x8000;
b6895b4f 7339 }
92f5d02b 7340
b6895b4f 7341 value += signed_addend;
b6895b4f
PB		 7342
7343 if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL)
7344 value -= (input_section->output_section->vma
7345 + input_section->output_offset + rel->r_offset);
7346
92f5d02b
MS		 7347 if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000)
7348 return bfd_reloc_overflow;
7349
7350 if (sym_flags == STT_ARM_TFUNC)
7351 value |= 1;
7352
7353 if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL
7354 || r_type == R_ARM_THM_MOVT_BREL)
b6895b4f
PB		 7355 value >>= 16;
7356
7357 insn &= 0xfbf08f00;
7358 insn |= (value & 0xf000) << 4;
7359 insn |= (value & 0x0800) << 15;
7360 insn |= (value & 0x0700) << 4;
7361 insn |= (value & 0x00ff);
7362
7363 bfd_put_16 (input_bfd, insn >> 16, hit_data);
7364 bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
7365 }
7366 return bfd_reloc_ok;
7367
4962c51a
MS		 7368 case R_ARM_ALU_PC_G0_NC:
7369 case R_ARM_ALU_PC_G1_NC:
7370 case R_ARM_ALU_PC_G0:
7371 case R_ARM_ALU_PC_G1:
7372 case R_ARM_ALU_PC_G2:
7373 case R_ARM_ALU_SB_G0_NC:
7374 case R_ARM_ALU_SB_G1_NC:
7375 case R_ARM_ALU_SB_G0:
7376 case R_ARM_ALU_SB_G1:
7377 case R_ARM_ALU_SB_G2:
7378 {
7379 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7380 bfd_vma pc = input_section->output_section->vma
7381 + input_section->output_offset + rel->r_offset;
7382 /* sb should be the origin of the *segment* containing the symbol.
7383 It is not clear how to obtain this OS-dependent value, so we
7384 make an arbitrary choice of zero. */
7385 bfd_vma sb = 0;
7386 bfd_vma residual;
7387 bfd_vma g_n;
7388 bfd_signed_vma signed_value;
7389 int group = 0;
7390
7391 /* Determine which group of bits to select. */
7392 switch (r_type)
7393 {
7394 case R_ARM_ALU_PC_G0_NC:
7395 case R_ARM_ALU_PC_G0:
7396 case R_ARM_ALU_SB_G0_NC:
7397 case R_ARM_ALU_SB_G0:
7398 group = 0;
7399 break;
7400
7401 case R_ARM_ALU_PC_G1_NC:
7402 case R_ARM_ALU_PC_G1:
7403 case R_ARM_ALU_SB_G1_NC:
7404 case R_ARM_ALU_SB_G1:
7405 group = 1;
7406 break;
7407
7408 case R_ARM_ALU_PC_G2:
7409 case R_ARM_ALU_SB_G2:
7410 group = 2;
7411 break;
7412
7413 default:
906e58ca 7414 abort ();
4962c51a
MS		 7415 }
7416
7417 /* If REL, extract the addend from the insn. If RELA, it will
7418 have already been fetched for us. */
7419 if (globals->use_rel)
7420 {
7421 int negative;
7422 bfd_vma constant = insn & 0xff;
7423 bfd_vma rotation = (insn & 0xf00) >> 8;
7424
7425 if (rotation == 0)
7426 signed_addend = constant;
7427 else
7428 {
7429 /* Compensate for the fact that in the instruction, the
7430 rotation is stored in multiples of 2 bits. */
7431 rotation *= 2;
7432
7433 /* Rotate "constant" right by "rotation" bits. */
7434 signed_addend = (constant >> rotation) |
7435 (constant << (8 * sizeof (bfd_vma) - rotation));
7436 }
7437
7438 /* Determine if the instruction is an ADD or a SUB.
7439 (For REL, this determines the sign of the addend.) */
7440 negative = identify_add_or_sub (insn);
7441 if (negative == 0)
7442 {
7443 (*_bfd_error_handler)
7444 (_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
7445 input_bfd, input_section,
7446 (long) rel->r_offset, howto->name);
906e58ca 7447 return bfd_reloc_overflow;
4962c51a
MS		 7448 }
7449
7450 signed_addend *= negative;
7451 }
7452
7453 /* Compute the value (X) to go in the place. */
7454 if (r_type == R_ARM_ALU_PC_G0_NC
7455 || r_type == R_ARM_ALU_PC_G1_NC
7456 || r_type == R_ARM_ALU_PC_G0
7457 || r_type == R_ARM_ALU_PC_G1
7458 || r_type == R_ARM_ALU_PC_G2)
7459 /* PC relative. */
7460 signed_value = value - pc + signed_addend;
7461 else
7462 /* Section base relative. */
7463 signed_value = value - sb + signed_addend;
7464
7465 /* If the target symbol is a Thumb function, then set the
7466 Thumb bit in the address. */
7467 if (sym_flags == STT_ARM_TFUNC)
7468 signed_value |= 1;
7469
7470 /* Calculate the value of the relevant G_n, in encoded
7471 constant-with-rotation format. */
7472 g_n = calculate_group_reloc_mask (abs (signed_value), group,
7473 &residual);
7474
7475 /* Check for overflow if required. */
7476 if ((r_type == R_ARM_ALU_PC_G0
7477 || r_type == R_ARM_ALU_PC_G1
7478 || r_type == R_ARM_ALU_PC_G2
7479 || r_type == R_ARM_ALU_SB_G0
7480 || r_type == R_ARM_ALU_SB_G1
7481 || r_type == R_ARM_ALU_SB_G2) && residual != 0)
7482 {
7483 (*_bfd_error_handler)
7484 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7485 input_bfd, input_section,
7486 (long) rel->r_offset, abs (signed_value), howto->name);
7487 return bfd_reloc_overflow;
7488 }
7489
7490 /* Mask out the value and the ADD/SUB part of the opcode; take care
7491 not to destroy the S bit. */
7492 insn &= 0xff1ff000;
7493
7494 /* Set the opcode according to whether the value to go in the
7495 place is negative. */
7496 if (signed_value < 0)
7497 insn |= 1 << 22;
7498 else
7499 insn |= 1 << 23;
7500
7501 /* Encode the offset. */
7502 insn |= g_n;
7503
7504 bfd_put_32 (input_bfd, insn, hit_data);
7505 }
7506 return bfd_reloc_ok;
7507
7508 case R_ARM_LDR_PC_G0:
7509 case R_ARM_LDR_PC_G1:
7510 case R_ARM_LDR_PC_G2:
7511 case R_ARM_LDR_SB_G0:
7512 case R_ARM_LDR_SB_G1:
7513 case R_ARM_LDR_SB_G2:
7514 {
7515 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7516 bfd_vma pc = input_section->output_section->vma
7517 + input_section->output_offset + rel->r_offset;
7518 bfd_vma sb = 0; /* See note above. */
7519 bfd_vma residual;
7520 bfd_signed_vma signed_value;
7521 int group = 0;
7522
7523 /* Determine which groups of bits to calculate. */
7524 switch (r_type)
7525 {
7526 case R_ARM_LDR_PC_G0:
7527 case R_ARM_LDR_SB_G0:
7528 group = 0;
7529 break;
7530
7531 case R_ARM_LDR_PC_G1:
7532 case R_ARM_LDR_SB_G1:
7533 group = 1;
7534 break;
7535
7536 case R_ARM_LDR_PC_G2:
7537 case R_ARM_LDR_SB_G2:
7538 group = 2;
7539 break;
7540
7541 default:
906e58ca 7542 abort ();
4962c51a
MS		 7543 }
7544
7545 /* If REL, extract the addend from the insn. If RELA, it will
7546 have already been fetched for us. */
7547 if (globals->use_rel)
7548 {
7549 int negative = (insn & (1 << 23)) ? 1 : -1;
7550 signed_addend = negative * (insn & 0xfff);
7551 }
7552
7553 /* Compute the value (X) to go in the place. */
7554 if (r_type == R_ARM_LDR_PC_G0
7555 || r_type == R_ARM_LDR_PC_G1
7556 || r_type == R_ARM_LDR_PC_G2)
7557 /* PC relative. */
7558 signed_value = value - pc + signed_addend;
7559 else
7560 /* Section base relative. */
7561 signed_value = value - sb + signed_addend;
7562
7563 /* Calculate the value of the relevant G_{n-1} to obtain
7564 the residual at that stage. */
7565 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7566
7567 /* Check for overflow. */
7568 if (residual >= 0x1000)
7569 {
7570 (*_bfd_error_handler)
7571 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7572 input_bfd, input_section,
7573 (long) rel->r_offset, abs (signed_value), howto->name);
7574 return bfd_reloc_overflow;
7575 }
7576
7577 /* Mask out the value and U bit. */
7578 insn &= 0xff7ff000;
7579
7580 /* Set the U bit if the value to go in the place is non-negative. */
7581 if (signed_value >= 0)
7582 insn |= 1 << 23;
7583
7584 /* Encode the offset. */
7585 insn |= residual;
7586
7587 bfd_put_32 (input_bfd, insn, hit_data);
7588 }
7589 return bfd_reloc_ok;
7590
7591 case R_ARM_LDRS_PC_G0:
7592 case R_ARM_LDRS_PC_G1:
7593 case R_ARM_LDRS_PC_G2:
7594 case R_ARM_LDRS_SB_G0:
7595 case R_ARM_LDRS_SB_G1:
7596 case R_ARM_LDRS_SB_G2:
7597 {
7598 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7599 bfd_vma pc = input_section->output_section->vma
7600 + input_section->output_offset + rel->r_offset;
7601 bfd_vma sb = 0; /* See note above. */
7602 bfd_vma residual;
7603 bfd_signed_vma signed_value;
7604 int group = 0;
7605
7606 /* Determine which groups of bits to calculate. */
7607 switch (r_type)
7608 {
7609 case R_ARM_LDRS_PC_G0:
7610 case R_ARM_LDRS_SB_G0:
7611 group = 0;
7612 break;
7613
7614 case R_ARM_LDRS_PC_G1:
7615 case R_ARM_LDRS_SB_G1:
7616 group = 1;
7617 break;
7618
7619 case R_ARM_LDRS_PC_G2:
7620 case R_ARM_LDRS_SB_G2:
7621 group = 2;
7622 break;
7623
7624 default:
906e58ca 7625 abort ();
4962c51a
MS		 7626 }
7627
7628 /* If REL, extract the addend from the insn. If RELA, it will
7629 have already been fetched for us. */
7630 if (globals->use_rel)
7631 {
7632 int negative = (insn & (1 << 23)) ? 1 : -1;
7633 signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf));
7634 }
7635
7636 /* Compute the value (X) to go in the place. */
7637 if (r_type == R_ARM_LDRS_PC_G0
7638 || r_type == R_ARM_LDRS_PC_G1
7639 || r_type == R_ARM_LDRS_PC_G2)
7640 /* PC relative. */
7641 signed_value = value - pc + signed_addend;
7642 else
7643 /* Section base relative. */
7644 signed_value = value - sb + signed_addend;
7645
7646 /* Calculate the value of the relevant G_{n-1} to obtain
7647 the residual at that stage. */
7648 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7649
7650 /* Check for overflow. */
7651 if (residual >= 0x100)
7652 {
7653 (*_bfd_error_handler)
7654 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7655 input_bfd, input_section,
7656 (long) rel->r_offset, abs (signed_value), howto->name);
7657 return bfd_reloc_overflow;
7658 }
7659
7660 /* Mask out the value and U bit. */
7661 insn &= 0xff7ff0f0;
7662
7663 /* Set the U bit if the value to go in the place is non-negative. */
7664 if (signed_value >= 0)
7665 insn |= 1 << 23;
7666
7667 /* Encode the offset. */
7668 insn |= ((residual & 0xf0) << 4) | (residual & 0xf);
7669
7670 bfd_put_32 (input_bfd, insn, hit_data);
7671 }
7672 return bfd_reloc_ok;
7673
7674 case R_ARM_LDC_PC_G0:
7675 case R_ARM_LDC_PC_G1:
7676 case R_ARM_LDC_PC_G2:
7677 case R_ARM_LDC_SB_G0:
7678 case R_ARM_LDC_SB_G1:
7679 case R_ARM_LDC_SB_G2:
7680 {
7681 bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
7682 bfd_vma pc = input_section->output_section->vma
7683 + input_section->output_offset + rel->r_offset;
7684 bfd_vma sb = 0; /* See note above. */
7685 bfd_vma residual;
7686 bfd_signed_vma signed_value;
7687 int group = 0;
7688
7689 /* Determine which groups of bits to calculate. */
7690 switch (r_type)
7691 {
7692 case R_ARM_LDC_PC_G0:
7693 case R_ARM_LDC_SB_G0:
7694 group = 0;
7695 break;
7696
7697 case R_ARM_LDC_PC_G1:
7698 case R_ARM_LDC_SB_G1:
7699 group = 1;
7700 break;
7701
7702 case R_ARM_LDC_PC_G2:
7703 case R_ARM_LDC_SB_G2:
7704 group = 2;
7705 break;
7706
7707 default:
906e58ca 7708 abort ();
4962c51a
MS		 7709 }
7710
7711 /* If REL, extract the addend from the insn. If RELA, it will
7712 have already been fetched for us. */
7713 if (globals->use_rel)
7714 {
7715 int negative = (insn & (1 << 23)) ? 1 : -1;
7716 signed_addend = negative * ((insn & 0xff) << 2);
7717 }
7718
7719 /* Compute the value (X) to go in the place. */
7720 if (r_type == R_ARM_LDC_PC_G0
7721 || r_type == R_ARM_LDC_PC_G1
7722 || r_type == R_ARM_LDC_PC_G2)
7723 /* PC relative. */
7724 signed_value = value - pc + signed_addend;
7725 else
7726 /* Section base relative. */
7727 signed_value = value - sb + signed_addend;
7728
7729 /* Calculate the value of the relevant G_{n-1} to obtain
7730 the residual at that stage. */
7731 calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
7732
7733 /* Check for overflow. (The absolute value to go in the place must be
7734 divisible by four and, after having been divided by four, must
7735 fit in eight bits.) */
7736 if ((residual & 0x3) != 0 || residual >= 0x400)
7737 {
7738 (*_bfd_error_handler)
7739 (_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
7740 input_bfd, input_section,
7741 (long) rel->r_offset, abs (signed_value), howto->name);
7742 return bfd_reloc_overflow;
7743 }
7744
7745 /* Mask out the value and U bit. */
7746 insn &= 0xff7fff00;
7747
7748 /* Set the U bit if the value to go in the place is non-negative. */
7749 if (signed_value >= 0)
7750 insn |= 1 << 23;
7751
7752 /* Encode the offset. */
7753 insn |= residual >> 2;
7754
7755 bfd_put_32 (input_bfd, insn, hit_data);
7756 }
7757 return bfd_reloc_ok;
7758
252b5132
RH		 7759 default:
7760 return bfd_reloc_notsupported;
7761 }
7762}
7763
98c1d4aa
NC		 7764/* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
7765static void
57e8b36a
NC		 7766arm_add_to_rel (bfd * abfd,
7767 bfd_byte * address,
7768 reloc_howto_type * howto,
7769 bfd_signed_vma increment)
98c1d4aa 7770{
98c1d4aa
NC		 7771 bfd_signed_vma addend;
7772
bd97cb95
DJ		 7773 if (howto->type == R_ARM_THM_CALL
7774 || howto->type == R_ARM_THM_JUMP24)
98c1d4aa 7775 {
9a5aca8c
AM		 7776 int upper_insn, lower_insn;
7777 int upper, lower;
98c1d4aa 7778
9a5aca8c
AM		 7779 upper_insn = bfd_get_16 (abfd, address);
7780 lower_insn = bfd_get_16 (abfd, address + 2);
7781 upper = upper_insn & 0x7ff;
7782 lower = lower_insn & 0x7ff;
7783
7784 addend = (upper << 12) | (lower << 1);
ddda4409 7785 addend += increment;
9a5aca8c 7786 addend >>= 1;
98c1d4aa 7787
9a5aca8c
AM		 7788 upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
7789 lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
7790
dc810e39
AM		 7791 bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
7792 bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
9a5aca8c
AM		 7793 }
7794 else
7795 {
7796 bfd_vma contents;
7797
7798 contents = bfd_get_32 (abfd, address);
7799
7800 /* Get the (signed) value from the instruction. */
7801 addend = contents & howto->src_mask;
7802 if (addend & ((howto->src_mask + 1) >> 1))
7803 {
7804 bfd_signed_vma mask;
7805
7806 mask = -1;
7807 mask &= ~ howto->src_mask;
7808 addend |= mask;
7809 }
7810
7811 /* Add in the increment, (which is a byte value). */
7812 switch (howto->type)
7813 {
7814 default:
7815 addend += increment;
7816 break;
7817
7818 case R_ARM_PC24:
c6596c5e 7819 case R_ARM_PLT32:
5b5bb741
PB		 7820 case R_ARM_CALL:
7821 case R_ARM_JUMP24:
9a5aca8c 7822 addend <<= howto->size;
dc810e39 7823 addend += increment;
9a5aca8c
AM		 7824
7825 /* Should we check for overflow here ? */
7826
7827 /* Drop any undesired bits. */
7828 addend >>= howto->rightshift;
7829 break;
7830 }
7831
7832 contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
7833
7834 bfd_put_32 (abfd, contents, address);
ddda4409 7835 }
98c1d4aa 7836}
252b5132 7837
ba93b8ac
DJ		 7838#define IS_ARM_TLS_RELOC(R_TYPE) \
7839 ((R_TYPE) == R_ARM_TLS_GD32 \
7840 || (R_TYPE) == R_ARM_TLS_LDO32 \
7841 || (R_TYPE) == R_ARM_TLS_LDM32 \
7842 || (R_TYPE) == R_ARM_TLS_DTPOFF32 \
7843 || (R_TYPE) == R_ARM_TLS_DTPMOD32 \
7844 || (R_TYPE) == R_ARM_TLS_TPOFF32 \
7845 || (R_TYPE) == R_ARM_TLS_LE32 \
7846 || (R_TYPE) == R_ARM_TLS_IE32)
7847
252b5132 7848/* Relocate an ARM ELF section. */
906e58ca 7849
b34976b6 7850static bfd_boolean
57e8b36a
NC		 7851elf32_arm_relocate_section (bfd * output_bfd,
7852 struct bfd_link_info * info,
7853 bfd * input_bfd,
7854 asection * input_section,
7855 bfd_byte * contents,
7856 Elf_Internal_Rela * relocs,
7857 Elf_Internal_Sym * local_syms,
7858 asection ** local_sections)
252b5132 7859{
b34976b6
AM		 7860 Elf_Internal_Shdr *symtab_hdr;
7861 struct elf_link_hash_entry **sym_hashes;
7862 Elf_Internal_Rela *rel;
7863 Elf_Internal_Rela *relend;
7864 const char *name;
b32d3aa2 7865 struct elf32_arm_link_hash_table * globals;
252b5132 7866
4e7fd91e 7867 globals = elf32_arm_hash_table (info);
b491616a 7868
0ffa91dd 7869 symtab_hdr = & elf_symtab_hdr (input_bfd);
252b5132
RH		 7870 sym_hashes = elf_sym_hashes (input_bfd);
7871
7872 rel = relocs;
7873 relend = relocs + input_section->reloc_count;
7874 for (; rel < relend; rel++)
7875 {
ba96a88f
NC		 7876 int r_type;
7877 reloc_howto_type * howto;
7878 unsigned long r_symndx;
7879 Elf_Internal_Sym * sym;
7880 asection * sec;
252b5132 7881 struct elf_link_hash_entry * h;
ba96a88f
NC		 7882 bfd_vma relocation;
7883 bfd_reloc_status_type r;
7884 arelent bfd_reloc;
ba93b8ac 7885 char sym_type;
0945cdfd 7886 bfd_boolean unresolved_reloc = FALSE;
f2a9dd69 7887 char *error_message = NULL;
f21f3fe0 7888
252b5132 7889 r_symndx = ELF32_R_SYM (rel->r_info);
ba96a88f 7890 r_type = ELF32_R_TYPE (rel->r_info);
b32d3aa2 7891 r_type = arm_real_reloc_type (globals, r_type);
252b5132 7892
ba96a88f
NC		 7893 if ( r_type == R_ARM_GNU_VTENTRY
7894 || r_type == R_ARM_GNU_VTINHERIT)
252b5132
RH		 7895 continue;
7896
b32d3aa2 7897 bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
ba96a88f 7898 howto = bfd_reloc.howto;
252b5132 7899
252b5132
RH		 7900 h = NULL;
7901 sym = NULL;
7902 sec = NULL;
9b485d32 7903
252b5132
RH		 7904 if (r_symndx < symtab_hdr->sh_info)
7905 {
7906 sym = local_syms + r_symndx;
ba93b8ac 7907 sym_type = ELF32_ST_TYPE (sym->st_info);
252b5132 7908 sec = local_sections[r_symndx];
4e7fd91e 7909 if (globals->use_rel)
f8df10f4 7910 {
4e7fd91e
PB		 7911 relocation = (sec->output_section->vma
7912 + sec->output_offset
7913 + sym->st_value);
ab96bf03
AM		 7914 if (!info->relocatable
7915 && (sec->flags & SEC_MERGE)
7916 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
f8df10f4 7917 {
4e7fd91e
PB		 7918 asection *msec;
7919 bfd_vma addend, value;
7920
39623e12 7921 switch (r_type)
4e7fd91e 7922 {
39623e12
PB		 7923 case R_ARM_MOVW_ABS_NC:
7924 case R_ARM_MOVT_ABS:
7925 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
7926 addend = ((value & 0xf0000) >> 4) | (value & 0xfff);
7927 addend = (addend ^ 0x8000) - 0x8000;
7928 break;
f8df10f4 7929
39623e12
PB		 7930 case R_ARM_THM_MOVW_ABS_NC:
7931 case R_ARM_THM_MOVT_ABS:
7932 value = bfd_get_16 (input_bfd, contents + rel->r_offset)
7933 << 16;
7934 value |= bfd_get_16 (input_bfd,
7935 contents + rel->r_offset + 2);
7936 addend = ((value & 0xf7000) >> 4) | (value & 0xff)
7937 | ((value & 0x04000000) >> 15);
7938 addend = (addend ^ 0x8000) - 0x8000;
7939 break;
f8df10f4 7940
39623e12
PB		 7941 default:
7942 if (howto->rightshift
7943 || (howto->src_mask & (howto->src_mask + 1)))
7944 {
7945 (*_bfd_error_handler)
7946 (_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
7947 input_bfd, input_section,
7948 (long) rel->r_offset, howto->name);
7949 return FALSE;
7950 }
7951
7952 value = bfd_get_32 (input_bfd, contents + rel->r_offset);
7953
7954 /* Get the (signed) value from the instruction. */
7955 addend = value & howto->src_mask;
7956 if (addend & ((howto->src_mask + 1) >> 1))
7957 {
7958 bfd_signed_vma mask;
7959
7960 mask = -1;
7961 mask &= ~ howto->src_mask;
7962 addend |= mask;
7963 }
7964 break;
4e7fd91e 7965 }
39623e12 7966
4e7fd91e
PB		 7967 msec = sec;
7968 addend =
7969 _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
7970 - relocation;
7971 addend += msec->output_section->vma + msec->output_offset;
39623e12
PB		 7972
7973 /* Cases here must match those in the preceeding
7974 switch statement. */
7975 switch (r_type)
7976 {
7977 case R_ARM_MOVW_ABS_NC:
7978 case R_ARM_MOVT_ABS:
7979 value = (value & 0xfff0f000) | ((addend & 0xf000) << 4)
7980 | (addend & 0xfff);
7981 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
7982 break;
7983
7984 case R_ARM_THM_MOVW_ABS_NC:
7985 case R_ARM_THM_MOVT_ABS:
7986 value = (value & 0xfbf08f00) | ((addend & 0xf700) << 4)
7987 | (addend & 0xff) | ((addend & 0x0800) << 15);
7988 bfd_put_16 (input_bfd, value >> 16,
7989 contents + rel->r_offset);
7990 bfd_put_16 (input_bfd, value,
7991 contents + rel->r_offset + 2);
7992 break;
7993
7994 default:
7995 value = (value & ~ howto->dst_mask)
7996 | (addend & howto->dst_mask);
7997 bfd_put_32 (input_bfd, value, contents + rel->r_offset);
7998 break;
7999 }
f8df10f4 8000 }
f8df10f4 8001 }
4e7fd91e
PB		 8002 else
8003 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH		 8004 }
8005 else
8006 {
560e09e9 8007 bfd_boolean warned;
560e09e9 8008
b2a8e766
AM		 8009 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
8010 r_symndx, symtab_hdr, sym_hashes,
8011 h, sec, relocation,
8012 unresolved_reloc, warned);
ba93b8ac
DJ		 8013
8014 sym_type = h->type;
252b5132
RH		 8015 }
8016
ab96bf03
AM		 8017 if (sec != NULL && elf_discarded_section (sec))
8018 {
8019 /* For relocs against symbols from removed linkonce sections,
8020 or sections discarded by a linker script, we just want the
8021 section contents zeroed. Avoid any special processing. */
8022 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
8023 rel->r_info = 0;
8024 rel->r_addend = 0;
8025 continue;
8026 }
8027
8028 if (info->relocatable)
8029 {
8030 /* This is a relocatable link. We don't have to change
8031 anything, unless the reloc is against a section symbol,
8032 in which case we have to adjust according to where the
8033 section symbol winds up in the output section. */
8034 if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
8035 {
8036 if (globals->use_rel)
8037 arm_add_to_rel (input_bfd, contents + rel->r_offset,
8038 howto, (bfd_signed_vma) sec->output_offset);
8039 else
8040 rel->r_addend += sec->output_offset;
8041 }
8042 continue;
8043 }
8044
252b5132
RH		 8045 if (h != NULL)
8046 name = h->root.root.string;
8047 else
8048 {
8049 name = (bfd_elf_string_from_elf_section
8050 (input_bfd, symtab_hdr->sh_link, sym->st_name));
8051 if (name == NULL || *name == '\0')
8052 name = bfd_section_name (input_bfd, sec);
8053 }
f21f3fe0 8054
ba93b8ac
DJ		 8055 if (r_symndx != 0
8056 && r_type != R_ARM_NONE
8057 && (h == NULL
8058 || h->root.type == bfd_link_hash_defined
8059 || h->root.type == bfd_link_hash_defweak)
8060 && IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
8061 {
8062 (*_bfd_error_handler)
8063 ((sym_type == STT_TLS
8064 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
8065 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
8066 input_bfd,
8067 input_section,
8068 (long) rel->r_offset,
8069 howto->name,
8070 name);
8071 }
8072
252b5132
RH		 8073 r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
8074 input_section, contents, rel,
8075 relocation, info, sec, name,
8076 (h ? ELF_ST_TYPE (h->type) :
0945cdfd 8077 ELF_ST_TYPE (sym->st_info)), h,
f2a9dd69 8078 &unresolved_reloc, &error_message);
0945cdfd
DJ		 8079
8080 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
8081 because such sections are not SEC_ALLOC and thus ld.so will
8082 not process them. */
8083 if (unresolved_reloc
8084 && !((input_section->flags & SEC_DEBUGGING) != 0
8085 && h->def_dynamic))
8086 {
8087 (*_bfd_error_handler)
843fe662
L		 8088 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
8089 input_bfd,
8090 input_section,
8091 (long) rel->r_offset,
8092 howto->name,
8093 h->root.root.string);
0945cdfd
DJ		 8094 return FALSE;
8095 }
252b5132
RH		 8096
8097 if (r != bfd_reloc_ok)
8098 {
252b5132
RH		 8099 switch (r)
8100 {
8101 case bfd_reloc_overflow:
cf919dfd
PB		 8102 /* If the overflowing reloc was to an undefined symbol,
8103 we have already printed one error message and there
8104 is no point complaining again. */
8105 if ((! h ||
8106 h->root.type != bfd_link_hash_undefined)
8107 && (!((*info->callbacks->reloc_overflow)
dfeffb9f
L		 8108 (info, (h ? &h->root : NULL), name, howto->name,
8109 (bfd_vma) 0, input_bfd, input_section,
8110 rel->r_offset))))
b34976b6 8111 return FALSE;
252b5132
RH		 8112 break;
8113
8114 case bfd_reloc_undefined:
8115 if (!((*info->callbacks->undefined_symbol)
8116 (info, name, input_bfd, input_section,
b34976b6
AM		 8117 rel->r_offset, TRUE)))
8118 return FALSE;
252b5132
RH		 8119 break;
8120
8121 case bfd_reloc_outofrange:
f2a9dd69 8122 error_message = _("out of range");
252b5132
RH		 8123 goto common_error;
8124
8125 case bfd_reloc_notsupported:
f2a9dd69 8126 error_message = _("unsupported relocation");
252b5132
RH		 8127 goto common_error;
8128
8129 case bfd_reloc_dangerous:
f2a9dd69 8130 /* error_message should already be set. */
252b5132
RH		 8131 goto common_error;
8132
8133 default:
f2a9dd69 8134 error_message = _("unknown error");
8029a119 8135 /* Fall through. */
252b5132
RH		 8136
8137 common_error:
f2a9dd69
DJ		 8138 BFD_ASSERT (error_message != NULL);
8139 if (!((*info->callbacks->reloc_dangerous)
8140 (info, error_message, input_bfd, input_section,
252b5132 8141 rel->r_offset)))
b34976b6 8142 return FALSE;
252b5132
RH		 8143 break;
8144 }
8145 }
8146 }
8147
b34976b6 8148 return TRUE;
252b5132
RH		 8149}
8150
3e6b1042
DJ		 8151static bfd_boolean
8152elf32_arm_output_glue_section (struct bfd_link_info *info, bfd *obfd,
8153 bfd *ibfd, const char *name)
8154{
8155 asection *sec, *osec;
8156
8157 sec = bfd_get_section_by_name (ibfd, name);
8158 if (sec == NULL || (sec->flags & SEC_EXCLUDE) != 0)
8159 return TRUE;
8160
8161 osec = sec->output_section;
8162 if (elf32_arm_write_section (obfd, info, sec, sec->contents))
8163 return TRUE;
8164
8165 if (! bfd_set_section_contents (obfd, osec, sec->contents,
8166 sec->output_offset, sec->size))
8167 return FALSE;
8168
8169 return TRUE;
8170}
8171
8172static bfd_boolean
8173elf32_arm_final_link (bfd *abfd, struct bfd_link_info *info)
8174{
8175 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (info);
8176
8177 /* Invoke the regular ELF backend linker to do all the work. */
8178 if (!bfd_elf_final_link (abfd, info))
8179 return FALSE;
8180
8181 /* Write out any glue sections now that we have created all the
8182 stubs. */
8183 if (globals->bfd_of_glue_owner != NULL)
8184 {
8185 if (! elf32_arm_output_glue_section (info, abfd,
8186 globals->bfd_of_glue_owner,
8187 ARM2THUMB_GLUE_SECTION_NAME))
8188 return FALSE;
8189
8190 if (! elf32_arm_output_glue_section (info, abfd,
8191 globals->bfd_of_glue_owner,
8192 THUMB2ARM_GLUE_SECTION_NAME))
8193 return FALSE;
8194
8195 if (! elf32_arm_output_glue_section (info, abfd,
8196 globals->bfd_of_glue_owner,
8197 VFP11_ERRATUM_VENEER_SECTION_NAME))
8198 return FALSE;
8199
8200 if (! elf32_arm_output_glue_section (info, abfd,
8201 globals->bfd_of_glue_owner,
8202 ARM_BX_GLUE_SECTION_NAME))
8203 return FALSE;
8204 }
8205
8206 return TRUE;
8207}
8208
c178919b
NC		 8209/* Set the right machine number. */
8210
8211static bfd_boolean
57e8b36a 8212elf32_arm_object_p (bfd *abfd)
c178919b 8213{
5a6c6817 8214 unsigned int mach;
57e8b36a 8215
5a6c6817 8216 mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
c178919b 8217
5a6c6817
NC		 8218 if (mach != bfd_mach_arm_unknown)
8219 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
8220
8221 else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
8222 bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
e16bb312 8223
e16bb312 8224 else
5a6c6817 8225 bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
c178919b
NC		 8226
8227 return TRUE;
8228}
8229
fc830a83 8230/* Function to keep ARM specific flags in the ELF header. */
3c9458e9 8231
b34976b6 8232static bfd_boolean
57e8b36a 8233elf32_arm_set_private_flags (bfd *abfd, flagword flags)
252b5132
RH		 8234{
8235 if (elf_flags_init (abfd)
8236 && elf_elfheader (abfd)->e_flags != flags)
8237 {
fc830a83
NC		 8238 if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
8239 {
fd2ec330 8240 if (flags & EF_ARM_INTERWORK)
d003868e
AM		 8241 (*_bfd_error_handler)
8242 (_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
8243 abfd);
fc830a83 8244 else
d003868e
AM		 8245 _bfd_error_handler
8246 (_("Warning: Clearing the interworking flag of %B due to outside request"),
8247 abfd);
fc830a83 8248 }
252b5132
RH		 8249 }
8250 else
8251 {
8252 elf_elfheader (abfd)->e_flags = flags;
b34976b6 8253 elf_flags_init (abfd) = TRUE;
252b5132
RH		 8254 }
8255
b34976b6 8256 return TRUE;
252b5132
RH		 8257}
8258
fc830a83 8259/* Copy backend specific data from one object module to another. */
9b485d32 8260
b34976b6 8261static bfd_boolean
57e8b36a 8262elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
252b5132
RH		 8263{
8264 flagword in_flags;
8265 flagword out_flags;
8266
0ffa91dd 8267 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
b34976b6 8268 return TRUE;
252b5132 8269
fc830a83 8270 in_flags = elf_elfheader (ibfd)->e_flags;
252b5132
RH		 8271 out_flags = elf_elfheader (obfd)->e_flags;
8272
fc830a83
NC		 8273 if (elf_flags_init (obfd)
8274 && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
8275 && in_flags != out_flags)
252b5132 8276 {
252b5132 8277 /* Cannot mix APCS26 and APCS32 code. */
fd2ec330 8278 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
b34976b6 8279 return FALSE;
252b5132
RH		 8280
8281 /* Cannot mix float APCS and non-float APCS code. */
fd2ec330 8282 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
b34976b6 8283 return FALSE;
252b5132
RH		 8284
8285 /* If the src and dest have different interworking flags
8286 then turn off the interworking bit. */
fd2ec330 8287 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
252b5132 8288 {
fd2ec330 8289 if (out_flags & EF_ARM_INTERWORK)
d003868e
AM		 8290 _bfd_error_handler
8291 (_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
8292 obfd, ibfd);
252b5132 8293
fd2ec330 8294 in_flags &= ~EF_ARM_INTERWORK;
252b5132 8295 }
1006ba19
PB		 8296
8297 /* Likewise for PIC, though don't warn for this case. */
fd2ec330
PB		 8298 if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
8299 in_flags &= ~EF_ARM_PIC;
252b5132
RH		 8300 }
8301
8302 elf_elfheader (obfd)->e_flags = in_flags;
b34976b6 8303 elf_flags_init (obfd) = TRUE;
252b5132 8304
94a3258f
PB		 8305 /* Also copy the EI_OSABI field. */
8306 elf_elfheader (obfd)->e_ident[EI_OSABI] =
8307 elf_elfheader (ibfd)->e_ident[EI_OSABI];
8308
104d59d1
JM		 8309 /* Copy object attributes. */
8310 _bfd_elf_copy_obj_attributes (ibfd, obfd);
ee065d83
PB		 8311
8312 return TRUE;
8313}
8314
8315/* Values for Tag_ABI_PCS_R9_use. */
8316enum
8317{
8318 AEABI_R9_V6,
8319 AEABI_R9_SB,
8320 AEABI_R9_TLS,
8321 AEABI_R9_unused
8322};
8323
8324/* Values for Tag_ABI_PCS_RW_data. */
8325enum
8326{
8327 AEABI_PCS_RW_data_absolute,
8328 AEABI_PCS_RW_data_PCrel,
8329 AEABI_PCS_RW_data_SBrel,
8330 AEABI_PCS_RW_data_unused
8331};
8332
8333/* Values for Tag_ABI_enum_size. */
8334enum
8335{
8336 AEABI_enum_unused,
8337 AEABI_enum_short,
8338 AEABI_enum_wide,
8339 AEABI_enum_forced_wide
8340};
8341
104d59d1
JM		 8342/* Determine whether an object attribute tag takes an integer, a
8343 string or both. */
906e58ca 8344
104d59d1
JM		 8345static int
8346elf32_arm_obj_attrs_arg_type (int tag)
8347{
8348 if (tag == Tag_compatibility)
3483fe2e 8349 return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL;
2d0bb761 8350 else if (tag == Tag_nodefaults)
3483fe2e
AS		 8351 return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_NO_DEFAULT;
8352 else if (tag == Tag_CPU_raw_name || tag == Tag_CPU_name)
8353 return ATTR_TYPE_FLAG_STR_VAL;
104d59d1 8354 else if (tag < 32)
3483fe2e 8355 return ATTR_TYPE_FLAG_INT_VAL;
104d59d1 8356 else
3483fe2e 8357 return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL;
104d59d1
JM		 8358}
8359
5aa6ff7c
AS		 8360/* The ABI defines that Tag_conformance should be emitted first, and that
8361 Tag_nodefaults should be second (if either is defined). This sets those
8362 two positions, and bumps up the position of all the remaining tags to
8363 compensate. */
8364static int
8365elf32_arm_obj_attrs_order (int num)
8366{
8367 if (num == 4)
8368 return Tag_conformance;
8369 if (num == 5)
8370 return Tag_nodefaults;
8371 if ((num - 2) < Tag_nodefaults)
8372 return num - 2;
8373 if ((num - 1) < Tag_conformance)
8374 return num - 1;
8375 return num;
8376}
8377
91e22acd
AS		 8378/* Read the architecture from the Tag_also_compatible_with attribute, if any.
8379 Returns -1 if no architecture could be read. */
8380
8381static int
8382get_secondary_compatible_arch (bfd *abfd)
8383{
8384 obj_attribute *attr =
8385 &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with];
8386
8387 /* Note: the tag and its argument below are uleb128 values, though
8388 currently-defined values fit in one byte for each. */
8389 if (attr->s
8390 && attr->s[0] == Tag_CPU_arch
8391 && (attr->s[1] & 128) != 128
8392 && attr->s[2] == 0)
8393 return attr->s[1];
8394
8395 /* This tag is "safely ignorable", so don't complain if it looks funny. */
8396 return -1;
8397}
8398
8399/* Set, or unset, the architecture of the Tag_also_compatible_with attribute.
8400 The tag is removed if ARCH is -1. */
8401
8e79c3df 8402static void
91e22acd 8403set_secondary_compatible_arch (bfd *abfd, int arch)
8e79c3df 8404{
91e22acd
AS		 8405 obj_attribute *attr =
8406 &elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with];
8e79c3df 8407
91e22acd
AS		 8408 if (arch == -1)
8409 {
8410 attr->s = NULL;
8411 return;
8e79c3df 8412 }
91e22acd
AS		 8413
8414 /* Note: the tag and its argument below are uleb128 values, though
8415 currently-defined values fit in one byte for each. */
8416 if (!attr->s)
8417 attr->s = bfd_alloc (abfd, 3);
8418 attr->s[0] = Tag_CPU_arch;
8419 attr->s[1] = arch;
8420 attr->s[2] = '\0';
8e79c3df
CM		 8421}
8422
91e22acd
AS		 8423/* Combine two values for Tag_CPU_arch, taking secondary compatibility tags
8424 into account. */
8425
8426static int
8427tag_cpu_arch_combine (bfd *ibfd, int oldtag, int *secondary_compat_out,
8428 int newtag, int secondary_compat)
8e79c3df 8429{
91e22acd
AS		 8430#define T(X) TAG_CPU_ARCH_##X
8431 int tagl, tagh, result;
8432 const int v6t2[] =
8433 {
8434 T(V6T2), /* PRE_V4. */
8435 T(V6T2), /* V4. */
8436 T(V6T2), /* V4T. */
8437 T(V6T2), /* V5T. */
8438 T(V6T2), /* V5TE. */
8439 T(V6T2), /* V5TEJ. */
8440 T(V6T2), /* V6. */
8441 T(V7), /* V6KZ. */
8442 T(V6T2) /* V6T2. */
8443 };
8444 const int v6k[] =
8445 {
8446 T(V6K), /* PRE_V4. */
8447 T(V6K), /* V4. */
8448 T(V6K), /* V4T. */
8449 T(V6K), /* V5T. */
8450 T(V6K), /* V5TE. */
8451 T(V6K), /* V5TEJ. */
8452 T(V6K), /* V6. */
8453 T(V6KZ), /* V6KZ. */
8454 T(V7), /* V6T2. */
8455 T(V6K) /* V6K. */
8456 };
8457 const int v7[] =
8458 {
8459 T(V7), /* PRE_V4. */
8460 T(V7), /* V4. */
8461 T(V7), /* V4T. */
8462 T(V7), /* V5T. */
8463 T(V7), /* V5TE. */
8464 T(V7), /* V5TEJ. */
8465 T(V7), /* V6. */
8466 T(V7), /* V6KZ. */
8467 T(V7), /* V6T2. */
8468 T(V7), /* V6K. */
8469 T(V7) /* V7. */
8470 };
8471 const int v6_m[] =
8472 {
8473 -1, /* PRE_V4. */
8474 -1, /* V4. */
8475 T(V6K), /* V4T. */
8476 T(V6K), /* V5T. */
8477 T(V6K), /* V5TE. */
8478 T(V6K), /* V5TEJ. */
8479 T(V6K), /* V6. */
8480 T(V6KZ), /* V6KZ. */
8481 T(V7), /* V6T2. */
8482 T(V6K), /* V6K. */
8483 T(V7), /* V7. */
8484 T(V6_M) /* V6_M. */
8485 };
8486 const int v6s_m[] =
8487 {
8488 -1, /* PRE_V4. */
8489 -1, /* V4. */
8490 T(V6K), /* V4T. */
8491 T(V6K), /* V5T. */
8492 T(V6K), /* V5TE. */
8493 T(V6K), /* V5TEJ. */
8494 T(V6K), /* V6. */
8495 T(V6KZ), /* V6KZ. */
8496 T(V7), /* V6T2. */
8497 T(V6K), /* V6K. */
8498 T(V7), /* V7. */
8499 T(V6S_M), /* V6_M. */
8500 T(V6S_M) /* V6S_M. */
8501 };
8502 const int v4t_plus_v6_m[] =
8503 {
8504 -1, /* PRE_V4. */
8505 -1, /* V4. */
8506 T(V4T), /* V4T. */
8507 T(V5T), /* V5T. */
8508 T(V5TE), /* V5TE. */
8509 T(V5TEJ), /* V5TEJ. */
8510 T(V6), /* V6. */
8511 T(V6KZ), /* V6KZ. */
8512 T(V6T2), /* V6T2. */
8513 T(V6K), /* V6K. */
8514 T(V7), /* V7. */
8515 T(V6_M), /* V6_M. */
8516 T(V6S_M), /* V6S_M. */
8517 T(V4T_PLUS_V6_M) /* V4T plus V6_M. */
8518 };
8519 const int *comb[] =
8520 {
8521 v6t2,
8522 v6k,
8523 v7,
8524 v6_m,
8525 v6s_m,
8526 /* Pseudo-architecture. */
8527 v4t_plus_v6_m
8528 };
8529
8530 /* Check we've not got a higher architecture than we know about. */
8531
8532 if (oldtag >= MAX_TAG_CPU_ARCH || newtag >= MAX_TAG_CPU_ARCH)
8533 {
3895f852 8534 _bfd_error_handler (_("error: %B: Unknown CPU architecture"), ibfd);
91e22acd
AS		 8535 return -1;
8536 }
8537
8538 /* Override old tag if we have a Tag_also_compatible_with on the output. */
8539
8540 if ((oldtag == T(V6_M) && *secondary_compat_out == T(V4T))
8541 || (oldtag == T(V4T) && *secondary_compat_out == T(V6_M)))
8542 oldtag = T(V4T_PLUS_V6_M);
8543
8544 /* And override the new tag if we have a Tag_also_compatible_with on the
8545 input. */
8546
8547 if ((newtag == T(V6_M) && secondary_compat == T(V4T))
8548 || (newtag == T(V4T) && secondary_compat == T(V6_M)))
8549 newtag = T(V4T_PLUS_V6_M);
8550
8551 tagl = (oldtag < newtag) ? oldtag : newtag;
8552 result = tagh = (oldtag > newtag) ? oldtag : newtag;
8553
8554 /* Architectures before V6KZ add features monotonically. */
8555 if (tagh <= TAG_CPU_ARCH_V6KZ)
8556 return result;
8557
8558 result = comb[tagh - T(V6T2)][tagl];
8559
8560 /* Use Tag_CPU_arch == V4T and Tag_also_compatible_with (Tag_CPU_arch V6_M)
8561 as the canonical version. */
8562 if (result == T(V4T_PLUS_V6_M))
8563 {
8564 result = T(V4T);
8565 *secondary_compat_out = T(V6_M);
8566 }
8567 else
8568 *secondary_compat_out = -1;
8569
8570 if (result == -1)
8571 {
3895f852 8572 _bfd_error_handler (_("error: %B: Conflicting CPU architectures %d/%d"),
91e22acd
AS		 8573 ibfd, oldtag, newtag);
8574 return -1;
8575 }
8576
8577 return result;
8578#undef T
8e79c3df
CM		 8579}
8580
ee065d83
PB		 8581/* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
8582 are conflicting attributes. */
906e58ca 8583
ee065d83
PB		 8584static bfd_boolean
8585elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
8586{
104d59d1
JM		 8587 obj_attribute *in_attr;
8588 obj_attribute *out_attr;
8589 obj_attribute_list *in_list;
8e79c3df 8590 obj_attribute_list *out_list;
91e22acd 8591 obj_attribute_list **out_listp;
ee065d83
PB		 8592 /* Some tags have 0 = don't care, 1 = strong requirement,
8593 2 = weak requirement. */
91e22acd 8594 static const int order_021[3] = {0, 2, 1};
b1cc4aeb
PB		 8595 /* For use with Tag_VFP_arch. */
8596 static const int order_01243[5] = {0, 1, 2, 4, 3};
ee065d83 8597 int i;
91e22acd 8598 bfd_boolean result = TRUE;
ee065d83 8599
3e6b1042
DJ		 8600 /* Skip the linker stubs file. This preserves previous behavior
8601 of accepting unknown attributes in the first input file - but
8602 is that a bug? */
8603 if (ibfd->flags & BFD_LINKER_CREATED)
8604 return TRUE;
8605
104d59d1 8606 if (!elf_known_obj_attributes_proc (obfd)[0].i)
ee065d83
PB		 8607 {
8608 /* This is the first object. Copy the attributes. */
104d59d1 8609 _bfd_elf_copy_obj_attributes (ibfd, obfd);
004ae526
PB		 8610
8611 /* Use the Tag_null value to indicate the attributes have been
8612 initialized. */
104d59d1 8613 elf_known_obj_attributes_proc (obfd)[0].i = 1;
004ae526 8614
ee065d83
PB		 8615 return TRUE;
8616 }
8617
104d59d1
JM		 8618 in_attr = elf_known_obj_attributes_proc (ibfd);
8619 out_attr = elf_known_obj_attributes_proc (obfd);
ee065d83
PB		 8620 /* This needs to happen before Tag_ABI_FP_number_model is merged. */
8621 if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i)
8622 {
8e79c3df 8623 /* Ignore mismatches if the object doesn't use floating point. */
ee065d83
PB		 8624 if (out_attr[Tag_ABI_FP_number_model].i == 0)
8625 out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i;
8626 else if (in_attr[Tag_ABI_FP_number_model].i != 0)
8627 {
8628 _bfd_error_handler
3895f852 8629 (_("error: %B uses VFP register arguments, %B does not"),
ee065d83 8630 ibfd, obfd);
91e22acd 8631 result = FALSE;
ee065d83
PB		 8632 }
8633 }
8634
104d59d1 8635 for (i = 4; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
ee065d83
PB		 8636 {
8637 /* Merge this attribute with existing attributes. */
8638 switch (i)
8639 {
8640 case Tag_CPU_raw_name:
8641 case Tag_CPU_name:
91e22acd 8642 /* These are merged after Tag_CPU_arch. */
ee065d83
PB		 8643 break;
8644
8645 case Tag_ABI_optimization_goals:
8646 case Tag_ABI_FP_optimization_goals:
8647 /* Use the first value seen. */
8648 break;
8649
8650 case Tag_CPU_arch:
91e22acd
AS		 8651 {
8652 int secondary_compat = -1, secondary_compat_out = -1;
8653 unsigned int saved_out_attr = out_attr[i].i;
8654 static const char *name_table[] = {
8655 /* These aren't real CPU names, but we can't guess
8656 that from the architecture version alone. */
8657 "Pre v4",
8658 "ARM v4",
8659 "ARM v4T",
8660 "ARM v5T",
8661 "ARM v5TE",
8662 "ARM v5TEJ",
8663 "ARM v6",
8664 "ARM v6KZ",
8665 "ARM v6T2",
8666 "ARM v6K",
8667 "ARM v7",
8668 "ARM v6-M",
8669 "ARM v6S-M"
8670 };
8671
8672 /* Merge Tag_CPU_arch and Tag_also_compatible_with. */
8673 secondary_compat = get_secondary_compatible_arch (ibfd);
8674 secondary_compat_out = get_secondary_compatible_arch (obfd);
8675 out_attr[i].i = tag_cpu_arch_combine (ibfd, out_attr[i].i,
8676 &secondary_compat_out,
8677 in_attr[i].i,
8678 secondary_compat);
8679 set_secondary_compatible_arch (obfd, secondary_compat_out);
8680
8681 /* Merge Tag_CPU_name and Tag_CPU_raw_name. */
8682 if (out_attr[i].i == saved_out_attr)
8683 ; /* Leave the names alone. */
8684 else if (out_attr[i].i == in_attr[i].i)
8685 {
8686 /* The output architecture has been changed to match the
8687 input architecture. Use the input names. */
8688 out_attr[Tag_CPU_name].s = in_attr[Tag_CPU_name].s
8689 ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_name].s)
8690 : NULL;
8691 out_attr[Tag_CPU_raw_name].s = in_attr[Tag_CPU_raw_name].s
8692 ? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_raw_name].s)
8693 : NULL;
8694 }
8695 else
8696 {
8697 out_attr[Tag_CPU_name].s = NULL;
8698 out_attr[Tag_CPU_raw_name].s = NULL;
8699 }
8700
8701 /* If we still don't have a value for Tag_CPU_name,
8702 make one up now. Tag_CPU_raw_name remains blank. */
8703 if (out_attr[Tag_CPU_name].s == NULL
8704 && out_attr[i].i < ARRAY_SIZE (name_table))
8705 out_attr[Tag_CPU_name].s =
8706 _bfd_elf_attr_strdup (obfd, name_table[out_attr[i].i]);
8707 }
8708 break;
8709
ee065d83
PB		 8710 case Tag_ARM_ISA_use:
8711 case Tag_THUMB_ISA_use:
ee065d83 8712 case Tag_WMMX_arch:
91e22acd
AS		 8713 case Tag_Advanced_SIMD_arch:
8714 /* ??? Do Advanced_SIMD (NEON) and WMMX conflict? */
ee065d83 8715 case Tag_ABI_FP_rounding:
ee065d83
PB		 8716 case Tag_ABI_FP_exceptions:
8717 case Tag_ABI_FP_user_exceptions:
8718 case Tag_ABI_FP_number_model:
91e22acd
AS		 8719 case Tag_VFP_HP_extension:
8720 case Tag_CPU_unaligned_access:
8721 case Tag_T2EE_use:
8722 case Tag_Virtualization_use:
8723 case Tag_MPextension_use:
ee065d83
PB		 8724 /* Use the largest value specified. */
8725 if (in_attr[i].i > out_attr[i].i)
8726 out_attr[i].i = in_attr[i].i;
8727 break;
8728
91e22acd
AS		 8729 case Tag_ABI_align8_preserved:
8730 case Tag_ABI_PCS_RO_data:
8731 /* Use the smallest value specified. */
8732 if (in_attr[i].i < out_attr[i].i)
8733 out_attr[i].i = in_attr[i].i;
8734 break;
8735
8736 case Tag_ABI_align8_needed:
8737 if ((in_attr[i].i > 0 || out_attr[i].i > 0)
8738 && (in_attr[Tag_ABI_align8_preserved].i == 0
8739 || out_attr[Tag_ABI_align8_preserved].i == 0))
ee065d83 8740 {
91e22acd
AS		 8741 /* This error message should be enabled once all non-conformant
8742 binaries in the toolchain have had the attributes set
8743 properly.
ee065d83 8744 _bfd_error_handler
3895f852 8745 (_("error: %B: 8-byte data alignment conflicts with %B"),
91e22acd
AS		 8746 obfd, ibfd);
8747 result = FALSE; */
ee065d83 8748 }
91e22acd
AS		 8749 /* Fall through. */
8750 case Tag_ABI_FP_denormal:
8751 case Tag_ABI_PCS_GOT_use:
8752 /* Use the "greatest" from the sequence 0, 2, 1, or the largest
8753 value if greater than 2 (for future-proofing). */
8754 if ((in_attr[i].i > 2 && in_attr[i].i > out_attr[i].i)
8755 || (in_attr[i].i <= 2 && out_attr[i].i <= 2
8756 && order_021[in_attr[i].i] > order_021[out_attr[i].i]))
ee065d83
PB		 8757 out_attr[i].i = in_attr[i].i;
8758 break;
91e22acd
AS		 8759
8760
8761 case Tag_CPU_arch_profile:
8762 if (out_attr[i].i != in_attr[i].i)
8763 {
8764 /* 0 will merge with anything.
8765 'A' and 'S' merge to 'A'.
8766 'R' and 'S' merge to 'R'.
8767 'M' and 'A|R|S' is an error. */
8768 if (out_attr[i].i == 0
8769 || (out_attr[i].i == 'S'
8770 && (in_attr[i].i == 'A' || in_attr[i].i == 'R')))
8771 out_attr[i].i = in_attr[i].i;
8772 else if (in_attr[i].i == 0
8773 || (in_attr[i].i == 'S'
8774 && (out_attr[i].i == 'A' || out_attr[i].i == 'R')))
8775 ; /* Do nothing. */
8776 else
8777 {
8778 _bfd_error_handler
3895f852 8779 (_("error: %B: Conflicting architecture profiles %c/%c"),
91e22acd
AS		 8780 ibfd,
8781 in_attr[i].i ? in_attr[i].i : '0',
8782 out_attr[i].i ? out_attr[i].i : '0');
8783 result = FALSE;
8784 }
8785 }
8786 break;
b1cc4aeb 8787 case Tag_VFP_arch:
91e22acd
AS		 8788 /* Use the "greatest" from the sequence 0, 1, 2, 4, 3, or the
8789 largest value if greater than 4 (for future-proofing). */
8790 if ((in_attr[i].i > 4 && in_attr[i].i > out_attr[i].i)
8791 || (in_attr[i].i <= 4 && out_attr[i].i <= 4
8792 && order_01243[in_attr[i].i] > order_01243[out_attr[i].i]))
b1cc4aeb
PB		 8793 out_attr[i].i = in_attr[i].i;
8794 break;
ee065d83
PB		 8795 case Tag_PCS_config:
8796 if (out_attr[i].i == 0)
8797 out_attr[i].i = in_attr[i].i;
8798 else if (in_attr[i].i != 0 && out_attr[i].i != 0)
8799 {
8800 /* It's sometimes ok to mix different configs, so this is only
8801 a warning. */
8802 _bfd_error_handler
8803 (_("Warning: %B: Conflicting platform configuration"), ibfd);
8804 }
8805 break;
8806 case Tag_ABI_PCS_R9_use:
004ae526
PB		 8807 if (in_attr[i].i != out_attr[i].i
8808 && out_attr[i].i != AEABI_R9_unused
ee065d83
PB		 8809 && in_attr[i].i != AEABI_R9_unused)
8810 {
8811 _bfd_error_handler
3895f852 8812 (_("error: %B: Conflicting use of R9"), ibfd);
91e22acd 8813 result = FALSE;
ee065d83
PB		 8814 }
8815 if (out_attr[i].i == AEABI_R9_unused)
8816 out_attr[i].i = in_attr[i].i;
8817 break;
8818 case Tag_ABI_PCS_RW_data:
8819 if (in_attr[i].i == AEABI_PCS_RW_data_SBrel
8820 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB
8821 && out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused)
8822 {
8823 _bfd_error_handler
3895f852 8824 (_("error: %B: SB relative addressing conflicts with use of R9"),
ee065d83 8825 ibfd);
91e22acd 8826 result = FALSE;
ee065d83
PB		 8827 }
8828 /* Use the smallest value specified. */
8829 if (in_attr[i].i < out_attr[i].i)
8830 out_attr[i].i = in_attr[i].i;
8831 break;
ee065d83 8832 case Tag_ABI_PCS_wchar_t:
a9dc9481
JM		 8833 if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i
8834 && !elf_arm_tdata (obfd)->no_wchar_size_warning)
ee065d83
PB		 8835 {
8836 _bfd_error_handler
a9dc9481
JM		 8837 (_("warning: %B uses %u-byte wchar_t yet the output is to use %u-byte wchar_t; use of wchar_t values across objects may fail"),
8838 ibfd, in_attr[i].i, out_attr[i].i);
ee065d83 8839 }
a9dc9481 8840 else if (in_attr[i].i && !out_attr[i].i)
ee065d83
PB		 8841 out_attr[i].i = in_attr[i].i;
8842 break;
ee065d83
PB		 8843 case Tag_ABI_enum_size:
8844 if (in_attr[i].i != AEABI_enum_unused)
8845 {
8846 if (out_attr[i].i == AEABI_enum_unused
8847 || out_attr[i].i == AEABI_enum_forced_wide)
8848 {
8849 /* The existing object is compatible with anything.
8850 Use whatever requirements the new object has. */
8851 out_attr[i].i = in_attr[i].i;
8852 }
8853 else if (in_attr[i].i != AEABI_enum_forced_wide
bf21ed78 8854 && out_attr[i].i != in_attr[i].i
0ffa91dd 8855 && !elf_arm_tdata (obfd)->no_enum_size_warning)
ee065d83 8856 {
91e22acd 8857 static const char *aeabi_enum_names[] =
bf21ed78 8858 { "", "variable-size", "32-bit", "" };
91e22acd
AS		 8859 const char *in_name =
8860 in_attr[i].i < ARRAY_SIZE(aeabi_enum_names)
8861 ? aeabi_enum_names[in_attr[i].i]
8862 : "<unknown>";
8863 const char *out_name =
8864 out_attr[i].i < ARRAY_SIZE(aeabi_enum_names)
8865 ? aeabi_enum_names[out_attr[i].i]
8866 : "<unknown>";
ee065d83 8867 _bfd_error_handler
bf21ed78 8868 (_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
91e22acd 8869 ibfd, in_name, out_name);
ee065d83
PB		 8870 }
8871 }
8872 break;
8873 case Tag_ABI_VFP_args:
8874 /* Aready done. */
8875 break;
8876 case Tag_ABI_WMMX_args:
8877 if (in_attr[i].i != out_attr[i].i)
8878 {
8879 _bfd_error_handler
3895f852 8880 (_("error: %B uses iWMMXt register arguments, %B does not"),
ee065d83 8881 ibfd, obfd);
91e22acd 8882 result = FALSE;
ee065d83
PB		 8883 }
8884 break;
7b86a9fa
AS		 8885 case Tag_compatibility:
8886 /* Merged in target-independent code. */
8887 break;
91e22acd
AS		 8888 case Tag_ABI_HardFP_use:
8889 /* 1 (SP) and 2 (DP) conflict, so combine to 3 (SP & DP). */
8890 if ((in_attr[i].i == 1 && out_attr[i].i == 2)
8891 || (in_attr[i].i == 2 && out_attr[i].i == 1))
8892 out_attr[i].i = 3;
8893 else if (in_attr[i].i > out_attr[i].i)
8894 out_attr[i].i = in_attr[i].i;
8895 break;
8896 case Tag_ABI_FP_16bit_format:
8897 if (in_attr[i].i != 0 && out_attr[i].i != 0)
8898 {
8899 if (in_attr[i].i != out_attr[i].i)
8900 {
8901 _bfd_error_handler
3895f852 8902 (_("error: fp16 format mismatch between %B and %B"),
91e22acd
AS		 8903 ibfd, obfd);
8904 result = FALSE;
8905 }
8906 }
8907 if (in_attr[i].i != 0)
8908 out_attr[i].i = in_attr[i].i;
8909 break;
7b86a9fa 8910
91e22acd 8911 case Tag_nodefaults:
2d0bb761
AS		 8912 /* This tag is set if it exists, but the value is unused (and is
8913 typically zero). We don't actually need to do anything here -
8914 the merge happens automatically when the type flags are merged
8915 below. */
91e22acd
AS		 8916 break;
8917 case Tag_also_compatible_with:
8918 /* Already done in Tag_CPU_arch. */
8919 break;
8920 case Tag_conformance:
8921 /* Keep the attribute if it matches. Throw it away otherwise.
8922 No attribute means no claim to conform. */
8923 if (!in_attr[i].s || !out_attr[i].s
8924 || strcmp (in_attr[i].s, out_attr[i].s) != 0)
8925 out_attr[i].s = NULL;
8926 break;
3cfad14c 8927
91e22acd 8928 default:
3cfad14c 8929 {
91e22acd
AS		 8930 bfd *err_bfd = NULL;
8931
8932 /* The "known_obj_attributes" table does contain some undefined
8933 attributes. Ensure that there are unused. */
8934 if (out_attr[i].i != 0 || out_attr[i].s != NULL)
8935 err_bfd = obfd;
8936 else if (in_attr[i].i != 0 || in_attr[i].s != NULL)
8937 err_bfd = ibfd;
8938
8939 if (err_bfd != NULL)
8940 {
8941 /* Attribute numbers >=64 (mod 128) can be safely ignored. */
8942 if ((i & 127) < 64)
8943 {
8944 _bfd_error_handler
8945 (_("%B: Unknown mandatory EABI object attribute %d"),
8946 err_bfd, i);
8947 bfd_set_error (bfd_error_bad_value);
8948 result = FALSE;
8949 }
8950 else
8951 {
8952 _bfd_error_handler
8953 (_("Warning: %B: Unknown EABI object attribute %d"),
8954 err_bfd, i);
8955 }
8956 }
8957
8958 /* Only pass on attributes that match in both inputs. */
8959 if (in_attr[i].i != out_attr[i].i
8960 || in_attr[i].s != out_attr[i].s
8961 || (in_attr[i].s != NULL && out_attr[i].s != NULL
8962 && strcmp (in_attr[i].s, out_attr[i].s) != 0))
8963 {
8964 out_attr[i].i = 0;
8965 out_attr[i].s = NULL;
8966 }
3cfad14c 8967 }
91e22acd
AS		 8968 }
8969
8970 /* If out_attr was copied from in_attr then it won't have a type yet. */
8971 if (in_attr[i].type && !out_attr[i].type)
8972 out_attr[i].type = in_attr[i].type;
ee065d83
PB		 8973 }
8974
104d59d1
JM		 8975 /* Merge Tag_compatibility attributes and any common GNU ones. */
8976 _bfd_elf_merge_object_attributes (ibfd, obfd);
ee065d83 8977
104d59d1
JM		 8978 /* Check for any attributes not known on ARM. */
8979 in_list = elf_other_obj_attributes_proc (ibfd);
91e22acd
AS		 8980 out_listp = &elf_other_obj_attributes_proc (obfd);
8981 out_list = *out_listp;
8e79c3df 8982
91e22acd 8983 for (; in_list || out_list; )
ee065d83 8984 {
91e22acd
AS		 8985 bfd *err_bfd = NULL;
8986 int err_tag = 0;
8e79c3df
CM		 8987
8988 /* The tags for each list are in numerical order. */
8989 /* If the tags are equal, then merge. */
91e22acd 8990 if (out_list && (!in_list || in_list->tag > out_list->tag))
8e79c3df 8991 {
91e22acd
AS		 8992 /* This attribute only exists in obfd. We can't merge, and we don't
8993 know what the tag means, so delete it. */
8994 err_bfd = obfd;
8995 err_tag = out_list->tag;
8996 *out_listp = out_list->next;
8997 out_list = *out_listp;
8e79c3df 8998 }
91e22acd 8999 else if (in_list && (!out_list || in_list->tag < out_list->tag))
8e79c3df 9000 {
91e22acd
AS		 9001 /* This attribute only exists in ibfd. We can't merge, and we don't
9002 know what the tag means, so ignore it. */
9003 err_bfd = ibfd;
9004 err_tag = in_list->tag;
8e79c3df 9005 in_list = in_list->next;
eb111b1f 9006 }
91e22acd
AS		 9007 else /* The tags are equal. */
9008 {
9009 /* As present, all attributes in the list are unknown, and
9010 therefore can't be merged meaningfully. */
9011 err_bfd = obfd;
9012 err_tag = out_list->tag;
9013
9014 /* Only pass on attributes that match in both inputs. */
9015 if (in_list->attr.i != out_list->attr.i
9016 || in_list->attr.s != out_list->attr.s
9017 || (in_list->attr.s && out_list->attr.s
9018 && strcmp (in_list->attr.s, out_list->attr.s) != 0))
9019 {
9020 /* No match. Delete the attribute. */
9021 *out_listp = out_list->next;
9022 out_list = *out_listp;
9023 }
9024 else
9025 {
9026 /* Matched. Keep the attribute and move to the next. */
9027 out_list = out_list->next;
9028 in_list = in_list->next;
9029 }
9030 }
9031
9032 if (err_bfd)
9033 {
9034 /* Attribute numbers >=64 (mod 128) can be safely ignored. */
9035 if ((err_tag & 127) < 64)
9036 {
9037 _bfd_error_handler
9038 (_("%B: Unknown mandatory EABI object attribute %d"),
9039 err_bfd, err_tag);
9040 bfd_set_error (bfd_error_bad_value);
9041 result = FALSE;
9042 }
9043 else
9044 {
9045 _bfd_error_handler
9046 (_("Warning: %B: Unknown EABI object attribute %d"),
9047 err_bfd, err_tag);
9048 }
9049 }
ee065d83 9050 }
91e22acd 9051 return result;
252b5132
RH		 9052}
9053
3a4a14e9
PB		 9054
9055/* Return TRUE if the two EABI versions are incompatible. */
9056
9057static bfd_boolean
9058elf32_arm_versions_compatible (unsigned iver, unsigned over)
9059{
9060 /* v4 and v5 are the same spec before and after it was released,
9061 so allow mixing them. */
9062 if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5)
9063 || (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4))
9064 return TRUE;
9065
9066 return (iver == over);
9067}
9068
252b5132
RH		 9069/* Merge backend specific data from an object file to the output
9070 object file when linking. */
9b485d32 9071
b34976b6 9072static bfd_boolean
57e8b36a 9073elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
252b5132
RH		 9074{
9075 flagword out_flags;
9076 flagword in_flags;
b34976b6 9077 bfd_boolean flags_compatible = TRUE;
cf919dfd 9078 asection *sec;
252b5132 9079
9b485d32 9080 /* Check if we have the same endianess. */
82e51918 9081 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
b34976b6 9082 return FALSE;
1fe494a5 9083
0ffa91dd 9084 if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
b34976b6 9085 return TRUE;
252b5132 9086
ee065d83
PB		 9087 if (!elf32_arm_merge_eabi_attributes (ibfd, obfd))
9088 return FALSE;
9089
252b5132
RH		 9090 /* The input BFD must have had its flags initialised. */
9091 /* The following seems bogus to me -- The flags are initialized in
9092 the assembler but I don't think an elf_flags_init field is
9b485d32 9093 written into the object. */
252b5132
RH		 9094 /* BFD_ASSERT (elf_flags_init (ibfd)); */
9095
9096 in_flags = elf_elfheader (ibfd)->e_flags;
9097 out_flags = elf_elfheader (obfd)->e_flags;
9098
23684067
PB		 9099 /* In theory there is no reason why we couldn't handle this. However
9100 in practice it isn't even close to working and there is no real
9101 reason to want it. */
9102 if (EF_ARM_EABI_VERSION (in_flags) >= EF_ARM_EABI_VER4
c13bb2ea 9103 && !(ibfd->flags & DYNAMIC)
23684067
PB		 9104 && (in_flags & EF_ARM_BE8))
9105 {
3895f852 9106 _bfd_error_handler (_("error: %B is already in final BE8 format"),
23684067
PB		 9107 ibfd);
9108 return FALSE;
9109 }
9110
252b5132
RH		 9111 if (!elf_flags_init (obfd))
9112 {
fe077fa6
NC		 9113 /* If the input is the default architecture and had the default
9114 flags then do not bother setting the flags for the output
9115 architecture, instead allow future merges to do this. If no
9116 future merges ever set these flags then they will retain their
9117 uninitialised values, which surprise surprise, correspond
252b5132 9118 to the default values. */
fe077fa6
NC		 9119 if (bfd_get_arch_info (ibfd)->the_default
9120 && elf_elfheader (ibfd)->e_flags == 0)
b34976b6 9121 return TRUE;
252b5132 9122
b34976b6 9123 elf_flags_init (obfd) = TRUE;
252b5132
RH		 9124 elf_elfheader (obfd)->e_flags = in_flags;
9125
9126 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
9127 && bfd_get_arch_info (obfd)->the_default)
9128 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
9129
b34976b6 9130 return TRUE;
252b5132
RH		 9131 }
9132
5a6c6817
NC		 9133 /* Determine what should happen if the input ARM architecture
9134 does not match the output ARM architecture. */
9135 if (! bfd_arm_merge_machines (ibfd, obfd))
9136 return FALSE;
e16bb312 9137
1006ba19 9138 /* Identical flags must be compatible. */
252b5132 9139 if (in_flags == out_flags)
b34976b6 9140 return TRUE;
252b5132 9141
35a0f415
DJ		 9142 /* Check to see if the input BFD actually contains any sections. If
9143 not, its flags may not have been initialised either, but it
8e3de13a 9144 cannot actually cause any incompatiblity. Do not short-circuit
35a0f415 9145 dynamic objects; their section list may be emptied by
d1f161ea 9146 elf_link_add_object_symbols.
35a0f415 9147
d1f161ea
NC		 9148 Also check to see if there are no code sections in the input.
9149 In this case there is no need to check for code specific flags.
9150 XXX - do we need to worry about floating-point format compatability
9151 in data sections ? */
35a0f415 9152 if (!(ibfd->flags & DYNAMIC))
cf919dfd 9153 {
35a0f415 9154 bfd_boolean null_input_bfd = TRUE;
d1f161ea 9155 bfd_boolean only_data_sections = TRUE;
35a0f415
DJ		 9156
9157 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
cf919dfd 9158 {
35a0f415
DJ		 9159 /* Ignore synthetic glue sections. */
9160 if (strcmp (sec->name, ".glue_7")
9161 && strcmp (sec->name, ".glue_7t"))
9162 {
d1f161ea
NC		 9163 if ((bfd_get_section_flags (ibfd, sec)
9164 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
9165 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
9166 only_data_sections = FALSE;
9167
35a0f415
DJ		 9168 null_input_bfd = FALSE;
9169 break;
9170 }
cf919dfd 9171 }
d1f161ea
NC		 9172
9173 if (null_input_bfd || only_data_sections)
35a0f415 9174 return TRUE;
cf919dfd 9175 }
cf919dfd 9176
252b5132 9177 /* Complain about various flag mismatches. */
3a4a14e9
PB		 9178 if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags),
9179 EF_ARM_EABI_VERSION (out_flags)))
fc830a83 9180 {
d003868e 9181 _bfd_error_handler
3895f852 9182 (_("error: Source object %B has EABI version %d, but target %B has EABI version %d"),
d003868e
AM		 9183 ibfd, obfd,
9184 (in_flags & EF_ARM_EABIMASK) >> 24,
9185 (out_flags & EF_ARM_EABIMASK) >> 24);
b34976b6 9186 return FALSE;
fc830a83 9187 }
252b5132 9188
1006ba19 9189 /* Not sure what needs to be checked for EABI versions >= 1. */
00a97672
RS		 9190 /* VxWorks libraries do not use these flags. */
9191 if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed
9192 && get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed
9193 && EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
1006ba19 9194 {
fd2ec330 9195 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
1006ba19 9196 {
d003868e 9197 _bfd_error_handler
3895f852 9198 (_("error: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
d003868e
AM		 9199 ibfd, obfd,
9200 in_flags & EF_ARM_APCS_26 ? 26 : 32,
9201 out_flags & EF_ARM_APCS_26 ? 26 : 32);
b34976b6 9202 flags_compatible = FALSE;
1006ba19 9203 }
252b5132 9204
fd2ec330 9205 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
1006ba19 9206 {
5eefb65f 9207 if (in_flags & EF_ARM_APCS_FLOAT)
d003868e 9208 _bfd_error_handler
3895f852 9209 (_("error: %B passes floats in float registers, whereas %B passes them in integer registers"),
d003868e 9210 ibfd, obfd);
5eefb65f 9211 else
d003868e 9212 _bfd_error_handler
3895f852 9213 (_("error: %B passes floats in integer registers, whereas %B passes them in float registers"),
d003868e 9214 ibfd, obfd);
63b0f745 9215
b34976b6 9216 flags_compatible = FALSE;
1006ba19 9217 }
252b5132 9218
96a846ea 9219 if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
1006ba19 9220 {
96a846ea 9221 if (in_flags & EF_ARM_VFP_FLOAT)
d003868e 9222 _bfd_error_handler
3895f852 9223 (_("error: %B uses VFP instructions, whereas %B does not"),
d003868e 9224 ibfd, obfd);
5eefb65f 9225 else
d003868e 9226 _bfd_error_handler
3895f852 9227 (_("error: %B uses FPA instructions, whereas %B does not"),
d003868e 9228 ibfd, obfd);
fde78edd
NC		 9229
9230 flags_compatible = FALSE;
9231 }
9232
9233 if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
9234 {
9235 if (in_flags & EF_ARM_MAVERICK_FLOAT)
d003868e 9236 _bfd_error_handler
3895f852 9237 (_("error: %B uses Maverick instructions, whereas %B does not"),
d003868e 9238 ibfd, obfd);
fde78edd 9239 else
d003868e 9240 _bfd_error_handler
3895f852 9241 (_("error: %B does not use Maverick instructions, whereas %B does"),
d003868e 9242 ibfd, obfd);
63b0f745 9243
b34976b6 9244 flags_compatible = FALSE;
1006ba19 9245 }
96a846ea
RE		 9246
9247#ifdef EF_ARM_SOFT_FLOAT
9248 if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
9249 {
9250 /* We can allow interworking between code that is VFP format
9251 layout, and uses either soft float or integer regs for
9252 passing floating point arguments and results. We already
9253 know that the APCS_FLOAT flags match; similarly for VFP
9254 flags. */
9255 if ((in_flags & EF_ARM_APCS_FLOAT) != 0
9256 || (in_flags & EF_ARM_VFP_FLOAT) == 0)
9257 {
9258 if (in_flags & EF_ARM_SOFT_FLOAT)
d003868e 9259 _bfd_error_handler
3895f852 9260 (_("error: %B uses software FP, whereas %B uses hardware FP"),
d003868e 9261 ibfd, obfd);
96a846ea 9262 else
d003868e 9263 _bfd_error_handler
3895f852 9264 (_("error: %B uses hardware FP, whereas %B uses software FP"),
d003868e 9265 ibfd, obfd);
96a846ea 9266
b34976b6 9267 flags_compatible = FALSE;
96a846ea
RE		 9268 }
9269 }
ee43f35e 9270#endif
252b5132 9271
1006ba19 9272 /* Interworking mismatch is only a warning. */
fd2ec330 9273 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
8f615d07 9274 {
e3c8793a
NC		 9275 if (in_flags & EF_ARM_INTERWORK)
9276 {
d003868e
AM		 9277 _bfd_error_handler
9278 (_("Warning: %B supports interworking, whereas %B does not"),
9279 ibfd, obfd);
e3c8793a
NC		 9280 }
9281 else
9282 {
d003868e
AM		 9283 _bfd_error_handler
9284 (_("Warning: %B does not support interworking, whereas %B does"),
9285 ibfd, obfd);
e3c8793a 9286 }
8f615d07 9287 }
252b5132 9288 }
63b0f745 9289
1006ba19 9290 return flags_compatible;
252b5132
RH		 9291}
9292
9b485d32
NC		 9293/* Display the flags field. */
9294
b34976b6 9295static bfd_boolean
57e8b36a 9296elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
252b5132 9297{
fc830a83
NC		 9298 FILE * file = (FILE *) ptr;
9299 unsigned long flags;
252b5132
RH		 9300
9301 BFD_ASSERT (abfd != NULL && ptr != NULL);
9302
9303 /* Print normal ELF private data. */
9304 _bfd_elf_print_private_bfd_data (abfd, ptr);
9305
fc830a83 9306 flags = elf_elfheader (abfd)->e_flags;
9b485d32
NC		 9307 /* Ignore init flag - it may not be set, despite the flags field
9308 containing valid data. */
252b5132
RH		 9309
9310 /* xgettext:c-format */
9b485d32 9311 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
252b5132 9312
fc830a83
NC		 9313 switch (EF_ARM_EABI_VERSION (flags))
9314 {
9315 case EF_ARM_EABI_UNKNOWN:
4cc11e76 9316 /* The following flag bits are GNU extensions and not part of the
fc830a83
NC		 9317 official ARM ELF extended ABI. Hence they are only decoded if
9318 the EABI version is not set. */
fd2ec330 9319 if (flags & EF_ARM_INTERWORK)
9b485d32 9320 fprintf (file, _(" [interworking enabled]"));
9a5aca8c 9321
fd2ec330 9322 if (flags & EF_ARM_APCS_26)
6c571f00 9323 fprintf (file, " [APCS-26]");
fc830a83 9324 else
6c571f00 9325 fprintf (file, " [APCS-32]");
9a5aca8c 9326
96a846ea
RE		 9327 if (flags & EF_ARM_VFP_FLOAT)
9328 fprintf (file, _(" [VFP float format]"));
fde78edd
NC		 9329 else if (flags & EF_ARM_MAVERICK_FLOAT)
9330 fprintf (file, _(" [Maverick float format]"));
96a846ea
RE		 9331 else
9332 fprintf (file, _(" [FPA float format]"));
9333
fd2ec330 9334 if (flags & EF_ARM_APCS_FLOAT)
9b485d32 9335 fprintf (file, _(" [floats passed in float registers]"));
9a5aca8c 9336
fd2ec330 9337 if (flags & EF_ARM_PIC)
9b485d32 9338 fprintf (file, _(" [position independent]"));
fc830a83 9339
fd2ec330 9340 if (flags & EF_ARM_NEW_ABI)
9b485d32 9341 fprintf (file, _(" [new ABI]"));
9a5aca8c 9342
fd2ec330 9343 if (flags & EF_ARM_OLD_ABI)
9b485d32 9344 fprintf (file, _(" [old ABI]"));
9a5aca8c 9345
fd2ec330 9346 if (flags & EF_ARM_SOFT_FLOAT)
9b485d32 9347 fprintf (file, _(" [software FP]"));
9a5aca8c 9348
96a846ea
RE		 9349 flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
9350 | EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
fde78edd
NC		 9351 | EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
9352 | EF_ARM_MAVERICK_FLOAT);
fc830a83 9353 break;
9a5aca8c 9354
fc830a83 9355 case EF_ARM_EABI_VER1:
9b485d32 9356 fprintf (file, _(" [Version1 EABI]"));
9a5aca8c 9357
fc830a83 9358 if (flags & EF_ARM_SYMSARESORTED)
9b485d32 9359 fprintf (file, _(" [sorted symbol table]"));
fc830a83 9360 else
9b485d32 9361 fprintf (file, _(" [unsorted symbol table]"));
9a5aca8c 9362
fc830a83
NC		 9363 flags &= ~ EF_ARM_SYMSARESORTED;
9364 break;
9a5aca8c 9365
fd2ec330
PB		 9366 case EF_ARM_EABI_VER2:
9367 fprintf (file, _(" [Version2 EABI]"));
9368
9369 if (flags & EF_ARM_SYMSARESORTED)
9370 fprintf (file, _(" [sorted symbol table]"));
9371 else
9372 fprintf (file, _(" [unsorted symbol table]"));
9373
9374 if (flags & EF_ARM_DYNSYMSUSESEGIDX)
9375 fprintf (file, _(" [dynamic symbols use segment index]"));
9376
9377 if (flags & EF_ARM_MAPSYMSFIRST)
9378 fprintf (file, _(" [mapping symbols precede others]"));
9379
99e4ae17 9380 flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
fd2ec330
PB		 9381 | EF_ARM_MAPSYMSFIRST);
9382 break;
9383
d507cf36
PB		 9384 case EF_ARM_EABI_VER3:
9385 fprintf (file, _(" [Version3 EABI]"));
8cb51566
PB		 9386 break;
9387
9388 case EF_ARM_EABI_VER4:
9389 fprintf (file, _(" [Version4 EABI]"));
3a4a14e9 9390 goto eabi;
d507cf36 9391
3a4a14e9
PB		 9392 case EF_ARM_EABI_VER5:
9393 fprintf (file, _(" [Version5 EABI]"));
9394 eabi:
d507cf36
PB		 9395 if (flags & EF_ARM_BE8)
9396 fprintf (file, _(" [BE8]"));
9397
9398 if (flags & EF_ARM_LE8)
9399 fprintf (file, _(" [LE8]"));
9400
9401 flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
9402 break;
9403
fc830a83 9404 default:
9b485d32 9405 fprintf (file, _(" <EABI version unrecognised>"));
fc830a83
NC		 9406 break;
9407 }
252b5132 9408
fc830a83 9409 flags &= ~ EF_ARM_EABIMASK;
252b5132 9410
fc830a83 9411 if (flags & EF_ARM_RELEXEC)
9b485d32 9412 fprintf (file, _(" [relocatable executable]"));
252b5132 9413
fc830a83 9414 if (flags & EF_ARM_HASENTRY)
9b485d32 9415 fprintf (file, _(" [has entry point]"));
252b5132 9416
fc830a83
NC		 9417 flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
9418
9419 if (flags)
9b485d32 9420 fprintf (file, _("<Unrecognised flag bits set>"));
9a5aca8c 9421
252b5132
RH		 9422 fputc ('\n', file);
9423
b34976b6 9424 return TRUE;
252b5132
RH		 9425}
9426
9427static int
57e8b36a 9428elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
252b5132 9429{
2f0ca46a
NC		 9430 switch (ELF_ST_TYPE (elf_sym->st_info))
9431 {
9432 case STT_ARM_TFUNC:
9433 return ELF_ST_TYPE (elf_sym->st_info);
ce855c42 9434
2f0ca46a
NC		 9435 case STT_ARM_16BIT:
9436 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
9437 This allows us to distinguish between data used by Thumb instructions
9438 and non-data (which is probably code) inside Thumb regions of an
9439 executable. */
1a0eb693 9440 if (type != STT_OBJECT && type != STT_TLS)
2f0ca46a
NC		 9441 return ELF_ST_TYPE (elf_sym->st_info);
9442 break;
9a5aca8c 9443
ce855c42
NC		 9444 default:
9445 break;
2f0ca46a
NC		 9446 }
9447
9448 return type;
252b5132 9449}
f21f3fe0 9450
252b5132 9451static asection *
07adf181
AM		 9452elf32_arm_gc_mark_hook (asection *sec,
9453 struct bfd_link_info *info,
9454 Elf_Internal_Rela *rel,
9455 struct elf_link_hash_entry *h,
9456 Elf_Internal_Sym *sym)
252b5132
RH		 9457{
9458 if (h != NULL)
07adf181 9459 switch (ELF32_R_TYPE (rel->r_info))
252b5132
RH		 9460 {
9461 case R_ARM_GNU_VTINHERIT:
9462 case R_ARM_GNU_VTENTRY:
07adf181
AM		 9463 return NULL;
9464 }
9ad5cbcf 9465
07adf181 9466 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
252b5132
RH		 9467}
9468
780a67af
NC		 9469/* Update the got entry reference counts for the section being removed. */
9470
b34976b6 9471static bfd_boolean
ba93b8ac
DJ		 9472elf32_arm_gc_sweep_hook (bfd * abfd,
9473 struct bfd_link_info * info,
9474 asection * sec,
9475 const Elf_Internal_Rela * relocs)
252b5132 9476{
5e681ec4
PB		 9477 Elf_Internal_Shdr *symtab_hdr;
9478 struct elf_link_hash_entry **sym_hashes;
9479 bfd_signed_vma *local_got_refcounts;
9480 const Elf_Internal_Rela *rel, *relend;
eb043451
PB		 9481 struct elf32_arm_link_hash_table * globals;
9482
7dda2462
TG		 9483 if (info->relocatable)
9484 return TRUE;
9485
eb043451 9486 globals = elf32_arm_hash_table (info);
5e681ec4
PB		 9487
9488 elf_section_data (sec)->local_dynrel = NULL;
9489
0ffa91dd 9490 symtab_hdr = & elf_symtab_hdr (abfd);
5e681ec4
PB		 9491 sym_hashes = elf_sym_hashes (abfd);
9492 local_got_refcounts = elf_local_got_refcounts (abfd);
9493
906e58ca 9494 check_use_blx (globals);
bd97cb95 9495
5e681ec4
PB		 9496 relend = relocs + sec->reloc_count;
9497 for (rel = relocs; rel < relend; rel++)
eb043451 9498 {
3eb128b2
AM		 9499 unsigned long r_symndx;
9500 struct elf_link_hash_entry *h = NULL;
eb043451 9501 int r_type;
5e681ec4 9502
3eb128b2
AM		 9503 r_symndx = ELF32_R_SYM (rel->r_info);
9504 if (r_symndx >= symtab_hdr->sh_info)
9505 {
9506 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
9507 while (h->root.type == bfd_link_hash_indirect
9508 || h->root.type == bfd_link_hash_warning)
9509 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9510 }
9511
eb043451 9512 r_type = ELF32_R_TYPE (rel->r_info);
eb043451 9513 r_type = arm_real_reloc_type (globals, r_type);
eb043451
PB		 9514 switch (r_type)
9515 {
9516 case R_ARM_GOT32:
eb043451 9517 case R_ARM_GOT_PREL:
ba93b8ac
DJ		 9518 case R_ARM_TLS_GD32:
9519 case R_ARM_TLS_IE32:
3eb128b2 9520 if (h != NULL)
eb043451 9521 {
eb043451
PB		 9522 if (h->got.refcount > 0)
9523 h->got.refcount -= 1;
9524 }
9525 else if (local_got_refcounts != NULL)
9526 {
9527 if (local_got_refcounts[r_symndx] > 0)
9528 local_got_refcounts[r_symndx] -= 1;
9529 }
9530 break;
9531
ba93b8ac
DJ		 9532 case R_ARM_TLS_LDM32:
9533 elf32_arm_hash_table (info)->tls_ldm_got.refcount -= 1;
9534 break;
9535
eb043451 9536 case R_ARM_ABS32:
bb224fc3 9537 case R_ARM_ABS32_NOI:
eb043451 9538 case R_ARM_REL32:
bb224fc3 9539 case R_ARM_REL32_NOI:
eb043451
PB		 9540 case R_ARM_PC24:
9541 case R_ARM_PLT32:
5b5bb741
PB		 9542 case R_ARM_CALL:
9543 case R_ARM_JUMP24:
eb043451 9544 case R_ARM_PREL31:
c19d1205 9545 case R_ARM_THM_CALL:
bd97cb95
DJ		 9546 case R_ARM_THM_JUMP24:
9547 case R_ARM_THM_JUMP19:
b6895b4f
PB		 9548 case R_ARM_MOVW_ABS_NC:
9549 case R_ARM_MOVT_ABS:
9550 case R_ARM_MOVW_PREL_NC:
9551 case R_ARM_MOVT_PREL:
9552 case R_ARM_THM_MOVW_ABS_NC:
9553 case R_ARM_THM_MOVT_ABS:
9554 case R_ARM_THM_MOVW_PREL_NC:
9555 case R_ARM_THM_MOVT_PREL:
b7693d02
DJ		 9556 /* Should the interworking branches be here also? */
9557
3eb128b2 9558 if (h != NULL)
eb043451
PB		 9559 {
9560 struct elf32_arm_link_hash_entry *eh;
9561 struct elf32_arm_relocs_copied **pp;
9562 struct elf32_arm_relocs_copied *p;
5e681ec4 9563
b7693d02 9564 eh = (struct elf32_arm_link_hash_entry *) h;
5e681ec4 9565
eb043451 9566 if (h->plt.refcount > 0)
b7693d02
DJ		 9567 {
9568 h->plt.refcount -= 1;
bd97cb95
DJ		 9569 if (r_type == R_ARM_THM_CALL)
9570 eh->plt_maybe_thumb_refcount--;
9571
9572 if (r_type == R_ARM_THM_JUMP24
9573 || r_type == R_ARM_THM_JUMP19)
b7693d02
DJ		 9574 eh->plt_thumb_refcount--;
9575 }
5e681ec4 9576
eb043451 9577 if (r_type == R_ARM_ABS32
bb224fc3
MS		 9578 || r_type == R_ARM_REL32
9579 || r_type == R_ARM_ABS32_NOI
9580 || r_type == R_ARM_REL32_NOI)
eb043451 9581 {
eb043451
PB		 9582 for (pp = &eh->relocs_copied; (p = *pp) != NULL;
9583 pp = &p->next)
9584 if (p->section == sec)
9585 {
9586 p->count -= 1;
bb224fc3
MS		 9587 if (ELF32_R_TYPE (rel->r_info) == R_ARM_REL32
9588 || ELF32_R_TYPE (rel->r_info) == R_ARM_REL32_NOI)
ba93b8ac 9589 p->pc_count -= 1;
eb043451
PB		 9590 if (p->count == 0)
9591 *pp = p->next;
9592 break;
9593 }
9594 }
9595 }
9596 break;
5e681ec4 9597
eb043451
PB		 9598 default:
9599 break;
9600 }
9601 }
5e681ec4 9602
b34976b6 9603 return TRUE;
252b5132
RH		 9604}
9605
780a67af
NC		 9606/* Look through the relocs for a section during the first phase. */
9607
b34976b6 9608static bfd_boolean
57e8b36a
NC		 9609elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
9610 asection *sec, const Elf_Internal_Rela *relocs)
252b5132 9611{
b34976b6
AM		 9612 Elf_Internal_Shdr *symtab_hdr;
9613 struct elf_link_hash_entry **sym_hashes;
b34976b6
AM		 9614 const Elf_Internal_Rela *rel;
9615 const Elf_Internal_Rela *rel_end;
9616 bfd *dynobj;
5e681ec4 9617 asection *sreloc;
b34976b6 9618 bfd_vma *local_got_offsets;
5e681ec4 9619 struct elf32_arm_link_hash_table *htab;
39623e12 9620 bfd_boolean needs_plt;
ce98a316 9621 unsigned long nsyms;
9a5aca8c 9622
1049f94e 9623 if (info->relocatable)
b34976b6 9624 return TRUE;
9a5aca8c 9625
0ffa91dd
NC		 9626 BFD_ASSERT (is_arm_elf (abfd));
9627
5e681ec4
PB		 9628 htab = elf32_arm_hash_table (info);
9629 sreloc = NULL;
9a5aca8c 9630
67687978
PB		 9631 /* Create dynamic sections for relocatable executables so that we can
9632 copy relocations. */
9633 if (htab->root.is_relocatable_executable
9634 && ! htab->root.dynamic_sections_created)
9635 {
9636 if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
9637 return FALSE;
9638 }
9639
252b5132
RH		 9640 dynobj = elf_hash_table (info)->dynobj;
9641 local_got_offsets = elf_local_got_offsets (abfd);
f21f3fe0 9642
0ffa91dd 9643 symtab_hdr = & elf_symtab_hdr (abfd);
252b5132 9644 sym_hashes = elf_sym_hashes (abfd);
ce98a316
NC		 9645 nsyms = NUM_SHDR_ENTRIES (symtab_hdr);
9646
252b5132
RH		 9647 rel_end = relocs + sec->reloc_count;
9648 for (rel = relocs; rel < rel_end; rel++)
9649 {
9650 struct elf_link_hash_entry *h;
b7693d02 9651 struct elf32_arm_link_hash_entry *eh;
252b5132 9652 unsigned long r_symndx;
eb043451 9653 int r_type;
9a5aca8c 9654
252b5132 9655 r_symndx = ELF32_R_SYM (rel->r_info);
eb043451 9656 r_type = ELF32_R_TYPE (rel->r_info);
eb043451 9657 r_type = arm_real_reloc_type (htab, r_type);
ba93b8ac 9658
ce98a316
NC		 9659 if (r_symndx >= nsyms
9660 /* PR 9934: It is possible to have relocations that do not
9661 refer to symbols, thus it is also possible to have an
9662 object file containing relocations but no symbol table. */
9663 && (r_symndx > 0 || nsyms > 0))
ba93b8ac
DJ		 9664 {
9665 (*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
ce98a316 9666 r_symndx);
ba93b8ac
DJ		 9667 return FALSE;
9668 }
9669
ce98a316 9670 if (nsyms == 0 || r_symndx < symtab_hdr->sh_info)
252b5132
RH		 9671 h = NULL;
9672 else
973a3492
L		 9673 {
9674 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
9675 while (h->root.type == bfd_link_hash_indirect
9676 || h->root.type == bfd_link_hash_warning)
9677 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9678 }
9a5aca8c 9679
b7693d02
DJ		 9680 eh = (struct elf32_arm_link_hash_entry *) h;
9681
eb043451 9682 switch (r_type)
252b5132 9683 {
5e681ec4 9684 case R_ARM_GOT32:
eb043451 9685 case R_ARM_GOT_PREL:
ba93b8ac
DJ		 9686 case R_ARM_TLS_GD32:
9687 case R_ARM_TLS_IE32:
5e681ec4 9688 /* This symbol requires a global offset table entry. */
ba93b8ac
DJ		 9689 {
9690 int tls_type, old_tls_type;
5e681ec4 9691
ba93b8ac
DJ		 9692 switch (r_type)
9693 {
9694 case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
9695 case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
9696 default: tls_type = GOT_NORMAL; break;
9697 }
252b5132 9698
ba93b8ac
DJ		 9699 if (h != NULL)
9700 {
9701 h->got.refcount++;
9702 old_tls_type = elf32_arm_hash_entry (h)->tls_type;
9703 }
9704 else
9705 {
9706 bfd_signed_vma *local_got_refcounts;
9707
9708 /* This is a global offset table entry for a local symbol. */
9709 local_got_refcounts = elf_local_got_refcounts (abfd);
9710 if (local_got_refcounts == NULL)
9711 {
9712 bfd_size_type size;
906e58ca 9713
ba93b8ac 9714 size = symtab_hdr->sh_info;
906e58ca 9715 size *= (sizeof (bfd_signed_vma) + sizeof (char));
ba93b8ac
DJ		 9716 local_got_refcounts = bfd_zalloc (abfd, size);
9717 if (local_got_refcounts == NULL)
9718 return FALSE;
9719 elf_local_got_refcounts (abfd) = local_got_refcounts;
9720 elf32_arm_local_got_tls_type (abfd)
9721 = (char *) (local_got_refcounts + symtab_hdr->sh_info);
9722 }
9723 local_got_refcounts[r_symndx] += 1;
9724 old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
9725 }
9726
9727 /* We will already have issued an error message if there is a
9728 TLS / non-TLS mismatch, based on the symbol type. We don't
9729 support any linker relaxations. So just combine any TLS
9730 types needed. */
9731 if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
9732 && tls_type != GOT_NORMAL)
9733 tls_type |= old_tls_type;
9734
9735 if (old_tls_type != tls_type)
9736 {
9737 if (h != NULL)
9738 elf32_arm_hash_entry (h)->tls_type = tls_type;
9739 else
9740 elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
9741 }
9742 }
8029a119 9743 /* Fall through. */
ba93b8ac
DJ		 9744
9745 case R_ARM_TLS_LDM32:
9746 if (r_type == R_ARM_TLS_LDM32)
9747 htab->tls_ldm_got.refcount++;
8029a119 9748 /* Fall through. */
252b5132 9749
c19d1205 9750 case R_ARM_GOTOFF32:
5e681ec4
PB		 9751 case R_ARM_GOTPC:
9752 if (htab->sgot == NULL)
9753 {
9754 if (htab->root.dynobj == NULL)
9755 htab->root.dynobj = abfd;
9756 if (!create_got_section (htab->root.dynobj, info))
9757 return FALSE;
9758 }
252b5132
RH		 9759 break;
9760
00a97672
RS		 9761 case R_ARM_ABS12:
9762 /* VxWorks uses dynamic R_ARM_ABS12 relocations for
9763 ldr __GOTT_INDEX__ offsets. */
9764 if (!htab->vxworks_p)
9765 break;
8029a119 9766 /* Fall through. */
00a97672 9767
252b5132 9768 case R_ARM_PC24:
7359ea65 9769 case R_ARM_PLT32:
5b5bb741
PB		 9770 case R_ARM_CALL:
9771 case R_ARM_JUMP24:
eb043451 9772 case R_ARM_PREL31:
c19d1205 9773 case R_ARM_THM_CALL:
bd97cb95
DJ		 9774 case R_ARM_THM_JUMP24:
9775 case R_ARM_THM_JUMP19:
39623e12
PB		 9776 needs_plt = 1;
9777 goto normal_reloc;
9778
96c23d59
JM		 9779 case R_ARM_MOVW_ABS_NC:
9780 case R_ARM_MOVT_ABS:
9781 case R_ARM_THM_MOVW_ABS_NC:
9782 case R_ARM_THM_MOVT_ABS:
9783 if (info->shared)
9784 {
9785 (*_bfd_error_handler)
9786 (_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
9787 abfd, elf32_arm_howto_table_1[r_type].name,
9788 (h) ? h->root.root.string : "a local symbol");
9789 bfd_set_error (bfd_error_bad_value);
9790 return FALSE;
9791 }
9792
9793 /* Fall through. */
39623e12
PB		 9794 case R_ARM_ABS32:
9795 case R_ARM_ABS32_NOI:
9796 case R_ARM_REL32:
9797 case R_ARM_REL32_NOI:
b6895b4f
PB		 9798 case R_ARM_MOVW_PREL_NC:
9799 case R_ARM_MOVT_PREL:
b6895b4f
PB		 9800 case R_ARM_THM_MOVW_PREL_NC:
9801 case R_ARM_THM_MOVT_PREL:
39623e12
PB		 9802 needs_plt = 0;
9803 normal_reloc:
9804
b7693d02 9805 /* Should the interworking branches be listed here? */
7359ea65 9806 if (h != NULL)
5e681ec4
PB		 9807 {
9808 /* If this reloc is in a read-only section, we might
9809 need a copy reloc. We can't check reliably at this
9810 stage whether the section is read-only, as input
9811 sections have not yet been mapped to output sections.
9812 Tentatively set the flag for now, and correct in
9813 adjust_dynamic_symbol. */
7359ea65 9814 if (!info->shared)
f5385ebf 9815 h->non_got_ref = 1;
7359ea65 9816
5e681ec4 9817 /* We may need a .plt entry if the function this reloc
c84cd8ee
DJ		 9818 refers to is in a different object. We can't tell for
9819 sure yet, because something later might force the
9820 symbol local. */
39623e12 9821 if (needs_plt)
f5385ebf 9822 h->needs_plt = 1;
4f199be3
DJ		 9823
9824 /* If we create a PLT entry, this relocation will reference
9825 it, even if it's an ABS32 relocation. */
9826 h->plt.refcount += 1;
b7693d02 9827
bd97cb95
DJ		 9828 /* It's too early to use htab->use_blx here, so we have to
9829 record possible blx references separately from
9830 relocs that definitely need a thumb stub. */
9831
c19d1205 9832 if (r_type == R_ARM_THM_CALL)
bd97cb95
DJ		 9833 eh->plt_maybe_thumb_refcount += 1;
9834
9835 if (r_type == R_ARM_THM_JUMP24
9836 || r_type == R_ARM_THM_JUMP19)
b7693d02 9837 eh->plt_thumb_refcount += 1;
5e681ec4
PB		 9838 }
9839
67687978
PB		 9840 /* If we are creating a shared library or relocatable executable,
9841 and this is a reloc against a global symbol, or a non PC
9842 relative reloc against a local symbol, then we need to copy
9843 the reloc into the shared library. However, if we are linking
9844 with -Bsymbolic, we do not need to copy a reloc against a
252b5132
RH		 9845 global symbol which is defined in an object we are
9846 including in the link (i.e., DEF_REGULAR is set). At
9847 this point we have not seen all the input files, so it is
9848 possible that DEF_REGULAR is not set now but will be set
9849 later (it is never cleared). We account for that
9850 possibility below by storing information in the
5e681ec4 9851 relocs_copied field of the hash table entry. */
67687978 9852 if ((info->shared || htab->root.is_relocatable_executable)
5e681ec4 9853 && (sec->flags & SEC_ALLOC) != 0
bb224fc3 9854 && ((r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI)
71a976dd
DJ		 9855 || (h != NULL && ! h->needs_plt
9856 && (! info->symbolic || ! h->def_regular))))
252b5132 9857 {
5e681ec4
PB		 9858 struct elf32_arm_relocs_copied *p, **head;
9859
252b5132
RH		 9860 /* When creating a shared object, we must copy these
9861 reloc types into the output file. We create a reloc
9862 section in dynobj and make room for this reloc. */
83bac4b0 9863 if (sreloc == NULL)
252b5132 9864 {
83bac4b0
NC		 9865 sreloc = _bfd_elf_make_dynamic_reloc_section
9866 (sec, dynobj, 2, abfd, ! htab->use_rel);
252b5132 9867
83bac4b0 9868 if (sreloc == NULL)
b34976b6 9869 return FALSE;
252b5132 9870
83bac4b0 9871 /* BPABI objects never have dynamic relocations mapped. */
a89e6478 9872 if (htab->symbian_p)
252b5132 9873 {
83bac4b0 9874 flagword flags;
5e681ec4 9875
83bac4b0 9876 flags = bfd_get_section_flags (dynobj, sreloc);
a89e6478 9877 flags &= ~(SEC_LOAD | SEC_ALLOC);
83bac4b0
NC		 9878 bfd_set_section_flags (dynobj, sreloc, flags);
9879 }
252b5132
RH		 9880 }
9881
5e681ec4
PB		 9882 /* If this is a global symbol, we count the number of
9883 relocations we need for this symbol. */
9884 if (h != NULL)
252b5132 9885 {
5e681ec4
PB		 9886 head = &((struct elf32_arm_link_hash_entry *) h)->relocs_copied;
9887 }
9888 else
9889 {
9890 /* Track dynamic relocs needed for local syms too.
9891 We really need local syms available to do this
9892 easily. Oh well. */
57e8b36a 9893
5e681ec4 9894 asection *s;
6edfbbad
DJ		 9895 void *vpp;
9896
5e681ec4
PB		 9897 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
9898 sec, r_symndx);
9899 if (s == NULL)
9900 return FALSE;
57e8b36a 9901
6edfbbad
DJ		 9902 vpp = &elf_section_data (s)->local_dynrel;
9903 head = (struct elf32_arm_relocs_copied **) vpp;
5e681ec4 9904 }
57e8b36a 9905
5e681ec4
PB		 9906 p = *head;
9907 if (p == NULL || p->section != sec)
9908 {
9909 bfd_size_type amt = sizeof *p;
57e8b36a 9910
5e681ec4 9911 p = bfd_alloc (htab->root.dynobj, amt);
252b5132 9912 if (p == NULL)
5e681ec4
PB		 9913 return FALSE;
9914 p->next = *head;
9915 *head = p;
9916 p->section = sec;
9917 p->count = 0;
ba93b8ac 9918 p->pc_count = 0;
252b5132 9919 }
57e8b36a 9920
bb224fc3 9921 if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI)
ba93b8ac 9922 p->pc_count += 1;
71a976dd 9923 p->count += 1;
252b5132
RH		 9924 }
9925 break;
9926
9927 /* This relocation describes the C++ object vtable hierarchy.
9928 Reconstruct it for later use during GC. */
9929 case R_ARM_GNU_VTINHERIT:
c152c796 9930 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
b34976b6 9931 return FALSE;
252b5132 9932 break;
9a5aca8c 9933
252b5132
RH		 9934 /* This relocation describes which C++ vtable entries are actually
9935 used. Record for later use during GC. */
9936 case R_ARM_GNU_VTENTRY:
d17e0c6e
JB		 9937 BFD_ASSERT (h != NULL);
9938 if (h != NULL
9939 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
b34976b6 9940 return FALSE;
252b5132
RH		 9941 break;
9942 }
9943 }
f21f3fe0 9944
b34976b6 9945 return TRUE;
252b5132
RH		 9946}
9947
6a5bb875
PB		 9948/* Unwinding tables are not referenced directly. This pass marks them as
9949 required if the corresponding code section is marked. */
9950
9951static bfd_boolean
906e58ca
NC		 9952elf32_arm_gc_mark_extra_sections (struct bfd_link_info *info,
9953 elf_gc_mark_hook_fn gc_mark_hook)
6a5bb875
PB		 9954{
9955 bfd *sub;
9956 Elf_Internal_Shdr **elf_shdrp;
9957 bfd_boolean again;
9958
9959 /* Marking EH data may cause additional code sections to be marked,
9960 requiring multiple passes. */
9961 again = TRUE;
9962 while (again)
9963 {
9964 again = FALSE;
9965 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
9966 {
9967 asection *o;
9968
0ffa91dd 9969 if (! is_arm_elf (sub))
6a5bb875
PB		 9970 continue;
9971
9972 elf_shdrp = elf_elfsections (sub);
9973 for (o = sub->sections; o != NULL; o = o->next)
9974 {
9975 Elf_Internal_Shdr *hdr;
0ffa91dd 9976
6a5bb875 9977 hdr = &elf_section_data (o)->this_hdr;
4fbb74a6
AM		 9978 if (hdr->sh_type == SHT_ARM_EXIDX
9979 && hdr->sh_link
9980 && hdr->sh_link < elf_numsections (sub)
6a5bb875
PB		 9981 && !o->gc_mark
9982 && elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
9983 {
9984 again = TRUE;
9985 if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
9986 return FALSE;
9987 }
9988 }
9989 }
9990 }
9991
9992 return TRUE;
9993}
9994
3c9458e9
NC		 9995/* Treat mapping symbols as special target symbols. */
9996
9997static bfd_boolean
9998elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
9999{
b0796911
PB		 10000 return bfd_is_arm_special_symbol_name (sym->name,
10001 BFD_ARM_SPECIAL_SYM_TYPE_ANY);
3c9458e9
NC		 10002}
10003
0367ecfb
NC		 10004/* This is a copy of elf_find_function() from elf.c except that
10005 ARM mapping symbols are ignored when looking for function names
10006 and STT_ARM_TFUNC is considered to a function type. */
252b5132 10007
0367ecfb
NC		 10008static bfd_boolean
10009arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
10010 asection * section,
10011 asymbol ** symbols,
10012 bfd_vma offset,
10013 const char ** filename_ptr,
10014 const char ** functionname_ptr)
10015{
10016 const char * filename = NULL;
10017 asymbol * func = NULL;
10018 bfd_vma low_func = 0;
10019 asymbol ** p;
252b5132
RH		 10020
10021 for (p = symbols; *p != NULL; p++)
10022 {
10023 elf_symbol_type *q;
10024
10025 q = (elf_symbol_type *) *p;
10026
252b5132
RH		 10027 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
10028 {
10029 default:
10030 break;
10031 case STT_FILE:
10032 filename = bfd_asymbol_name (&q->symbol);
10033 break;
252b5132
RH		 10034 case STT_FUNC:
10035 case STT_ARM_TFUNC:
9d2da7ca 10036 case STT_NOTYPE:
b0796911 10037 /* Skip mapping symbols. */
0367ecfb 10038 if ((q->symbol.flags & BSF_LOCAL)
b0796911
PB		 10039 && bfd_is_arm_special_symbol_name (q->symbol.name,
10040 BFD_ARM_SPECIAL_SYM_TYPE_ANY))
0367ecfb
NC		 10041 continue;
10042 /* Fall through. */
6b40fcba 10043 if (bfd_get_section (&q->symbol) == section
252b5132
RH		 10044 && q->symbol.value >= low_func
10045 && q->symbol.value <= offset)
10046 {
10047 func = (asymbol *) q;
10048 low_func = q->symbol.value;
10049 }
10050 break;
10051 }
10052 }
10053
10054 if (func == NULL)
b34976b6 10055 return FALSE;
252b5132 10056
0367ecfb
NC		 10057 if (filename_ptr)
10058 *filename_ptr = filename;
10059 if (functionname_ptr)
10060 *functionname_ptr = bfd_asymbol_name (func);
10061
10062 return TRUE;
906e58ca 10063}
0367ecfb
NC		 10064
10065
10066/* Find the nearest line to a particular section and offset, for error
10067 reporting. This code is a duplicate of the code in elf.c, except
10068 that it uses arm_elf_find_function. */
10069
10070static bfd_boolean
10071elf32_arm_find_nearest_line (bfd * abfd,
10072 asection * section,
10073 asymbol ** symbols,
10074 bfd_vma offset,
10075 const char ** filename_ptr,
10076 const char ** functionname_ptr,
10077 unsigned int * line_ptr)
10078{
10079 bfd_boolean found = FALSE;
10080
10081 /* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
10082
10083 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
10084 filename_ptr, functionname_ptr,
10085 line_ptr, 0,
10086 & elf_tdata (abfd)->dwarf2_find_line_info))
10087 {
10088 if (!*functionname_ptr)
10089 arm_elf_find_function (abfd, section, symbols, offset,
10090 *filename_ptr ? NULL : filename_ptr,
10091 functionname_ptr);
f21f3fe0 10092
0367ecfb
NC		 10093 return TRUE;
10094 }
10095
10096 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
10097 & found, filename_ptr,
10098 functionname_ptr, line_ptr,
10099 & elf_tdata (abfd)->line_info))
10100 return FALSE;
10101
10102 if (found && (*functionname_ptr || *line_ptr))
10103 return TRUE;
10104
10105 if (symbols == NULL)
10106 return FALSE;
10107
10108 if (! arm_elf_find_function (abfd, section, symbols, offset,
10109 filename_ptr, functionname_ptr))
10110 return FALSE;
10111
10112 *line_ptr = 0;
b34976b6 10113 return TRUE;
252b5132
RH		 10114}
10115
4ab527b0
FF		 10116static bfd_boolean
10117elf32_arm_find_inliner_info (bfd * abfd,
10118 const char ** filename_ptr,
10119 const char ** functionname_ptr,
10120 unsigned int * line_ptr)
10121{
10122 bfd_boolean found;
10123 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
10124 functionname_ptr, line_ptr,
10125 & elf_tdata (abfd)->dwarf2_find_line_info);
10126 return found;
10127}
10128
252b5132
RH		 10129/* Adjust a symbol defined by a dynamic object and referenced by a
10130 regular object. The current definition is in some section of the
10131 dynamic object, but we're not including those sections. We have to
10132 change the definition to something the rest of the link can
10133 understand. */
10134
b34976b6 10135static bfd_boolean
57e8b36a
NC		 10136elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
10137 struct elf_link_hash_entry * h)
252b5132
RH		 10138{
10139 bfd * dynobj;
10140 asection * s;
b7693d02 10141 struct elf32_arm_link_hash_entry * eh;
67687978 10142 struct elf32_arm_link_hash_table *globals;
252b5132 10143
67687978 10144 globals = elf32_arm_hash_table (info);
252b5132
RH		 10145 dynobj = elf_hash_table (info)->dynobj;
10146
10147 /* Make sure we know what is going on here. */
10148 BFD_ASSERT (dynobj != NULL
f5385ebf 10149 && (h->needs_plt
f6e332e6 10150 || h->u.weakdef != NULL
f5385ebf
AM		 10151 || (h->def_dynamic
10152 && h->ref_regular
10153 && !h->def_regular)));
252b5132 10154
b7693d02
DJ		 10155 eh = (struct elf32_arm_link_hash_entry *) h;
10156
252b5132
RH		 10157 /* If this is a function, put it in the procedure linkage table. We
10158 will fill in the contents of the procedure linkage table later,
10159 when we know the address of the .got section. */
0f88be7a 10160 if (h->type == STT_FUNC || h->type == STT_ARM_TFUNC
f5385ebf 10161 || h->needs_plt)
252b5132 10162 {
5e681ec4
PB		 10163 if (h->plt.refcount <= 0
10164 || SYMBOL_CALLS_LOCAL (info, h)
10165 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
10166 && h->root.type == bfd_link_hash_undefweak))
252b5132
RH		 10167 {
10168 /* This case can occur if we saw a PLT32 reloc in an input
5e681ec4
PB		 10169 file, but the symbol was never referred to by a dynamic
10170 object, or if all references were garbage collected. In
10171 such a case, we don't actually need to build a procedure
10172 linkage table, and we can just do a PC24 reloc instead. */
10173 h->plt.offset = (bfd_vma) -1;
b7693d02 10174 eh->plt_thumb_refcount = 0;
bd97cb95 10175 eh->plt_maybe_thumb_refcount = 0;
f5385ebf 10176 h->needs_plt = 0;
252b5132
RH		 10177 }
10178
b34976b6 10179 return TRUE;
252b5132 10180 }
5e681ec4 10181 else
b7693d02
DJ		 10182 {
10183 /* It's possible that we incorrectly decided a .plt reloc was
10184 needed for an R_ARM_PC24 or similar reloc to a non-function sym
10185 in check_relocs. We can't decide accurately between function
10186 and non-function syms in check-relocs; Objects loaded later in
10187 the link may change h->type. So fix it now. */
10188 h->plt.offset = (bfd_vma) -1;
10189 eh->plt_thumb_refcount = 0;
bd97cb95 10190 eh->plt_maybe_thumb_refcount = 0;
b7693d02 10191 }
252b5132
RH		 10192
10193 /* If this is a weak symbol, and there is a real definition, the
10194 processor independent code will have arranged for us to see the
10195 real definition first, and we can just use the same value. */
f6e332e6 10196 if (h->u.weakdef != NULL)
252b5132 10197 {
f6e332e6
AM		 10198 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
10199 || h->u.weakdef->root.type == bfd_link_hash_defweak);
10200 h->root.u.def.section = h->u.weakdef->root.u.def.section;
10201 h->root.u.def.value = h->u.weakdef->root.u.def.value;
b34976b6 10202 return TRUE;
252b5132
RH		 10203 }
10204
ba93b8ac
DJ		 10205 /* If there are no non-GOT references, we do not need a copy
10206 relocation. */
10207 if (!h->non_got_ref)
10208 return TRUE;
10209
252b5132
RH		 10210 /* This is a reference to a symbol defined by a dynamic object which
10211 is not a function. */
10212
10213 /* If we are creating a shared library, we must presume that the
10214 only references to the symbol are via the global offset table.
10215 For such cases we need not do anything here; the relocations will
67687978
PB		 10216 be handled correctly by relocate_section. Relocatable executables
10217 can reference data in shared objects directly, so we don't need to
10218 do anything here. */
10219 if (info->shared || globals->root.is_relocatable_executable)
b34976b6 10220 return TRUE;
252b5132 10221
909272ee
AM		 10222 if (h->size == 0)
10223 {
10224 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
10225 h->root.root.string);
10226 return TRUE;
10227 }
10228
252b5132
RH		 10229 /* We must allocate the symbol in our .dynbss section, which will
10230 become part of the .bss section of the executable. There will be
10231 an entry for this symbol in the .dynsym section. The dynamic
10232 object will contain position independent code, so all references
10233 from the dynamic object to this symbol will go through the global
10234 offset table. The dynamic linker will use the .dynsym entry to
10235 determine the address it must put in the global offset table, so
10236 both the dynamic object and the regular object will refer to the
10237 same memory location for the variable. */
252b5132
RH		 10238 s = bfd_get_section_by_name (dynobj, ".dynbss");
10239 BFD_ASSERT (s != NULL);
10240
10241 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
10242 copy the initial value out of the dynamic object and into the
10243 runtime process image. We need to remember the offset into the
00a97672 10244 .rel(a).bss section we are going to use. */
252b5132
RH		 10245 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
10246 {
10247 asection *srel;
10248
00a97672 10249 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss"));
252b5132 10250 BFD_ASSERT (srel != NULL);
00a97672 10251 srel->size += RELOC_SIZE (globals);
f5385ebf 10252 h->needs_copy = 1;
252b5132
RH		 10253 }
10254
027297b7 10255 return _bfd_elf_adjust_dynamic_copy (h, s);
252b5132
RH		 10256}
10257
5e681ec4
PB		 10258/* Allocate space in .plt, .got and associated reloc sections for
10259 dynamic relocs. */
10260
10261static bfd_boolean
57e8b36a 10262allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
5e681ec4
PB		 10263{
10264 struct bfd_link_info *info;
10265 struct elf32_arm_link_hash_table *htab;
10266 struct elf32_arm_link_hash_entry *eh;
10267 struct elf32_arm_relocs_copied *p;
bd97cb95 10268 bfd_signed_vma thumb_refs;
5e681ec4 10269
b7693d02
DJ		 10270 eh = (struct elf32_arm_link_hash_entry *) h;
10271
5e681ec4
PB		 10272 if (h->root.type == bfd_link_hash_indirect)
10273 return TRUE;
10274
10275 if (h->root.type == bfd_link_hash_warning)
10276 /* When warning symbols are created, they **replace** the "real"
10277 entry in the hash table, thus we never get to see the real
10278 symbol in a hash traversal. So look at it now. */
10279 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10280
10281 info = (struct bfd_link_info *) inf;
10282 htab = elf32_arm_hash_table (info);
10283
10284 if (htab->root.dynamic_sections_created
10285 && h->plt.refcount > 0)
10286 {
10287 /* Make sure this symbol is output as a dynamic symbol.
10288 Undefined weak syms won't yet be marked as dynamic. */
10289 if (h->dynindx == -1
f5385ebf 10290 && !h->forced_local)
5e681ec4 10291 {
c152c796 10292 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB		 10293 return FALSE;
10294 }
10295
10296 if (info->shared
7359ea65 10297 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
5e681ec4
PB		 10298 {
10299 asection *s = htab->splt;
10300
10301 /* If this is the first .plt entry, make room for the special
10302 first entry. */
eea6121a 10303 if (s->size == 0)
e5a52504 10304 s->size += htab->plt_header_size;
5e681ec4 10305
eea6121a 10306 h->plt.offset = s->size;
5e681ec4 10307
b7693d02
DJ		 10308 /* If we will insert a Thumb trampoline before this PLT, leave room
10309 for it. */
bd97cb95
DJ		 10310 thumb_refs = eh->plt_thumb_refcount;
10311 if (!htab->use_blx)
10312 thumb_refs += eh->plt_maybe_thumb_refcount;
10313
10314 if (thumb_refs > 0)
b7693d02
DJ		 10315 {
10316 h->plt.offset += PLT_THUMB_STUB_SIZE;
10317 s->size += PLT_THUMB_STUB_SIZE;
10318 }
10319
5e681ec4
PB		 10320 /* If this symbol is not defined in a regular file, and we are
10321 not generating a shared library, then set the symbol to this
10322 location in the .plt. This is required to make function
10323 pointers compare as equal between the normal executable and
10324 the shared library. */
10325 if (! info->shared
f5385ebf 10326 && !h->def_regular)
5e681ec4
PB		 10327 {
10328 h->root.u.def.section = s;
10329 h->root.u.def.value = h->plt.offset;
b7693d02
DJ		 10330
10331 /* Make sure the function is not marked as Thumb, in case
10332 it is the target of an ABS32 relocation, which will
10333 point to the PLT entry. */
10334 if (ELF_ST_TYPE (h->type) == STT_ARM_TFUNC)
10335 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
5e681ec4
PB		 10336 }
10337
10338 /* Make room for this entry. */
e5a52504 10339 s->size += htab->plt_entry_size;
5e681ec4 10340
e5a52504 10341 if (!htab->symbian_p)
b7693d02
DJ		 10342 {
10343 /* We also need to make an entry in the .got.plt section, which
10344 will be placed in the .got section by the linker script. */
10345 eh->plt_got_offset = htab->sgotplt->size;
10346 htab->sgotplt->size += 4;
10347 }
5e681ec4 10348
00a97672
RS		 10349 /* We also need to make an entry in the .rel(a).plt section. */
10350 htab->srelplt->size += RELOC_SIZE (htab);
10351
10352 /* VxWorks executables have a second set of relocations for
10353 each PLT entry. They go in a separate relocation section,
10354 which is processed by the kernel loader. */
10355 if (htab->vxworks_p && !info->shared)
10356 {
10357 /* There is a relocation for the initial PLT entry:
10358 an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
10359 if (h->plt.offset == htab->plt_header_size)
10360 htab->srelplt2->size += RELOC_SIZE (htab);
10361
10362 /* There are two extra relocations for each subsequent
10363 PLT entry: an R_ARM_32 relocation for the GOT entry,
10364 and an R_ARM_32 relocation for the PLT entry. */
10365 htab->srelplt2->size += RELOC_SIZE (htab) * 2;
10366 }
5e681ec4
PB		 10367 }
10368 else
10369 {
10370 h->plt.offset = (bfd_vma) -1;
f5385ebf 10371 h->needs_plt = 0;
5e681ec4
PB		 10372 }
10373 }
10374 else
10375 {
10376 h->plt.offset = (bfd_vma) -1;
f5385ebf 10377 h->needs_plt = 0;
5e681ec4
PB		 10378 }
10379
10380 if (h->got.refcount > 0)
10381 {
10382 asection *s;
10383 bfd_boolean dyn;
ba93b8ac
DJ		 10384 int tls_type = elf32_arm_hash_entry (h)->tls_type;
10385 int indx;
5e681ec4
PB		 10386
10387 /* Make sure this symbol is output as a dynamic symbol.
10388 Undefined weak syms won't yet be marked as dynamic. */
10389 if (h->dynindx == -1
f5385ebf 10390 && !h->forced_local)
5e681ec4 10391 {
c152c796 10392 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB		 10393 return FALSE;
10394 }
10395
e5a52504
MM		 10396 if (!htab->symbian_p)
10397 {
10398 s = htab->sgot;
10399 h->got.offset = s->size;
ba93b8ac
DJ		 10400
10401 if (tls_type == GOT_UNKNOWN)
10402 abort ();
10403
10404 if (tls_type == GOT_NORMAL)
10405 /* Non-TLS symbols need one GOT slot. */
10406 s->size += 4;
10407 else
10408 {
10409 if (tls_type & GOT_TLS_GD)
10410 /* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. */
10411 s->size += 8;
10412 if (tls_type & GOT_TLS_IE)
10413 /* R_ARM_TLS_IE32 needs one GOT slot. */
10414 s->size += 4;
10415 }
10416
e5a52504 10417 dyn = htab->root.dynamic_sections_created;
ba93b8ac
DJ		 10418
10419 indx = 0;
10420 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
10421 && (!info->shared
10422 || !SYMBOL_REFERENCES_LOCAL (info, h)))
10423 indx = h->dynindx;
10424
10425 if (tls_type != GOT_NORMAL
10426 && (info->shared || indx != 0)
10427 && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
10428 || h->root.type != bfd_link_hash_undefweak))
10429 {
10430 if (tls_type & GOT_TLS_IE)
00a97672 10431 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ		 10432
10433 if (tls_type & GOT_TLS_GD)
00a97672 10434 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ		 10435
10436 if ((tls_type & GOT_TLS_GD) && indx != 0)
00a97672 10437 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ		 10438 }
10439 else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
10440 || h->root.type != bfd_link_hash_undefweak)
10441 && (info->shared
10442 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
00a97672 10443 htab->srelgot->size += RELOC_SIZE (htab);
e5a52504 10444 }
5e681ec4
PB		 10445 }
10446 else
10447 h->got.offset = (bfd_vma) -1;
10448
a4fd1a8e
PB		 10449 /* Allocate stubs for exported Thumb functions on v4t. */
10450 if (!htab->use_blx && h->dynindx != -1
0eaedd0e 10451 && h->def_regular
a4fd1a8e
PB		 10452 && ELF_ST_TYPE (h->type) == STT_ARM_TFUNC
10453 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
10454 {
10455 struct elf_link_hash_entry * th;
10456 struct bfd_link_hash_entry * bh;
10457 struct elf_link_hash_entry * myh;
10458 char name[1024];
10459 asection *s;
10460 bh = NULL;
10461 /* Create a new symbol to regist the real location of the function. */
10462 s = h->root.u.def.section;
906e58ca 10463 sprintf (name, "__real_%s", h->root.root.string);
a4fd1a8e
PB		 10464 _bfd_generic_link_add_one_symbol (info, s->owner,
10465 name, BSF_GLOBAL, s,
10466 h->root.u.def.value,
10467 NULL, TRUE, FALSE, &bh);
10468
10469 myh = (struct elf_link_hash_entry *) bh;
10470 myh->type = ELF_ST_INFO (STB_LOCAL, STT_ARM_TFUNC);
10471 myh->forced_local = 1;
10472 eh->export_glue = myh;
10473 th = record_arm_to_thumb_glue (info, h);
10474 /* Point the symbol at the stub. */
10475 h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
10476 h->root.u.def.section = th->root.u.def.section;
10477 h->root.u.def.value = th->root.u.def.value & ~1;
10478 }
10479
5e681ec4
PB		 10480 if (eh->relocs_copied == NULL)
10481 return TRUE;
10482
10483 /* In the shared -Bsymbolic case, discard space allocated for
10484 dynamic pc-relative relocs against symbols which turn out to be
10485 defined in regular objects. For the normal shared case, discard
10486 space for pc-relative relocs that have become local due to symbol
10487 visibility changes. */
10488
67687978 10489 if (info->shared || htab->root.is_relocatable_executable)
5e681ec4 10490 {
7bdca076 10491 /* The only relocs that use pc_count are R_ARM_REL32 and
bb224fc3
MS		 10492 R_ARM_REL32_NOI, which will appear on something like
10493 ".long foo - .". We want calls to protected symbols to resolve
10494 directly to the function rather than going via the plt. If people
10495 want function pointer comparisons to work as expected then they
10496 should avoid writing assembly like ".long foo - .". */
ba93b8ac
DJ		 10497 if (SYMBOL_CALLS_LOCAL (info, h))
10498 {
10499 struct elf32_arm_relocs_copied **pp;
10500
10501 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
10502 {
10503 p->count -= p->pc_count;
10504 p->pc_count = 0;
10505 if (p->count == 0)
10506 *pp = p->next;
10507 else
10508 pp = &p->next;
10509 }
10510 }
10511
3348747a
NS		 10512 if (elf32_arm_hash_table (info)->vxworks_p)
10513 {
10514 struct elf32_arm_relocs_copied **pp;
10515
10516 for (pp = &eh->relocs_copied; (p = *pp) != NULL; )
10517 {
10518 if (strcmp (p->section->output_section->name, ".tls_vars") == 0)
10519 *pp = p->next;
10520 else
10521 pp = &p->next;
10522 }
10523 }
10524
ba93b8ac 10525 /* Also discard relocs on undefined weak syms with non-default
7359ea65 10526 visibility. */
22d606e9 10527 if (eh->relocs_copied != NULL
5e681ec4 10528 && h->root.type == bfd_link_hash_undefweak)
22d606e9
AM		 10529 {
10530 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
10531 eh->relocs_copied = NULL;
10532
10533 /* Make sure undefined weak symbols are output as a dynamic
10534 symbol in PIEs. */
10535 else if (h->dynindx == -1
10536 && !h->forced_local)
10537 {
10538 if (! bfd_elf_link_record_dynamic_symbol (info, h))
10539 return FALSE;
10540 }
10541 }
10542
67687978
PB		 10543 else if (htab->root.is_relocatable_executable && h->dynindx == -1
10544 && h->root.type == bfd_link_hash_new)
10545 {
10546 /* Output absolute symbols so that we can create relocations
10547 against them. For normal symbols we output a relocation
10548 against the section that contains them. */
10549 if (! bfd_elf_link_record_dynamic_symbol (info, h))
10550 return FALSE;
10551 }
10552
5e681ec4
PB		 10553 }
10554 else
10555 {
10556 /* For the non-shared case, discard space for relocs against
10557 symbols which turn out to need copy relocs or are not
10558 dynamic. */
10559
f5385ebf
AM		 10560 if (!h->non_got_ref
10561 && ((h->def_dynamic
10562 && !h->def_regular)
5e681ec4
PB		 10563 || (htab->root.dynamic_sections_created
10564 && (h->root.type == bfd_link_hash_undefweak
10565 || h->root.type == bfd_link_hash_undefined))))
10566 {
10567 /* Make sure this symbol is output as a dynamic symbol.
10568 Undefined weak syms won't yet be marked as dynamic. */
10569 if (h->dynindx == -1
f5385ebf 10570 && !h->forced_local)
5e681ec4 10571 {
c152c796 10572 if (! bfd_elf_link_record_dynamic_symbol (info, h))
5e681ec4
PB		 10573 return FALSE;
10574 }
10575
10576 /* If that succeeded, we know we'll be keeping all the
10577 relocs. */
10578 if (h->dynindx != -1)
10579 goto keep;
10580 }
10581
10582 eh->relocs_copied = NULL;
10583
10584 keep: ;
10585 }
10586
10587 /* Finally, allocate space. */
10588 for (p = eh->relocs_copied; p != NULL; p = p->next)
10589 {
10590 asection *sreloc = elf_section_data (p->section)->sreloc;
00a97672 10591 sreloc->size += p->count * RELOC_SIZE (htab);
5e681ec4
PB		 10592 }
10593
10594 return TRUE;
10595}
10596
08d1f311
DJ		 10597/* Find any dynamic relocs that apply to read-only sections. */
10598
10599static bfd_boolean
8029a119 10600elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf)
08d1f311 10601{
8029a119
NC		 10602 struct elf32_arm_link_hash_entry * eh;
10603 struct elf32_arm_relocs_copied * p;
08d1f311
DJ		 10604
10605 if (h->root.type == bfd_link_hash_warning)
10606 h = (struct elf_link_hash_entry *) h->root.u.i.link;
10607
10608 eh = (struct elf32_arm_link_hash_entry *) h;
10609 for (p = eh->relocs_copied; p != NULL; p = p->next)
10610 {
10611 asection *s = p->section;
10612
10613 if (s != NULL && (s->flags & SEC_READONLY) != 0)
10614 {
10615 struct bfd_link_info *info = (struct bfd_link_info *) inf;
10616
10617 info->flags |= DF_TEXTREL;
10618
10619 /* Not an error, just cut short the traversal. */
10620 return FALSE;
10621 }
10622 }
10623 return TRUE;
10624}
10625
d504ffc8
DJ		 10626void
10627bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info,
10628 int byteswap_code)
10629{
10630 struct elf32_arm_link_hash_table *globals;
10631
10632 globals = elf32_arm_hash_table (info);
10633 globals->byteswap_code = byteswap_code;
10634}
10635
252b5132
RH		 10636/* Set the sizes of the dynamic sections. */
10637
b34976b6 10638static bfd_boolean
57e8b36a
NC		 10639elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
10640 struct bfd_link_info * info)
252b5132
RH		 10641{
10642 bfd * dynobj;
10643 asection * s;
b34976b6
AM		 10644 bfd_boolean plt;
10645 bfd_boolean relocs;
5e681ec4
PB		 10646 bfd *ibfd;
10647 struct elf32_arm_link_hash_table *htab;
252b5132 10648
5e681ec4 10649 htab = elf32_arm_hash_table (info);
252b5132
RH		 10650 dynobj = elf_hash_table (info)->dynobj;
10651 BFD_ASSERT (dynobj != NULL);
39b41c9c 10652 check_use_blx (htab);
252b5132
RH		 10653
10654 if (elf_hash_table (info)->dynamic_sections_created)
10655 {
10656 /* Set the contents of the .interp section to the interpreter. */
893c4fe2 10657 if (info->executable)
252b5132
RH		 10658 {
10659 s = bfd_get_section_by_name (dynobj, ".interp");
10660 BFD_ASSERT (s != NULL);
eea6121a 10661 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
252b5132
RH		 10662 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
10663 }
10664 }
5e681ec4
PB		 10665
10666 /* Set up .got offsets for local syms, and space for local dynamic
10667 relocs. */
10668 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
252b5132 10669 {
5e681ec4
PB		 10670 bfd_signed_vma *local_got;
10671 bfd_signed_vma *end_local_got;
10672 char *local_tls_type;
10673 bfd_size_type locsymcount;
10674 Elf_Internal_Shdr *symtab_hdr;
10675 asection *srel;
3348747a 10676 bfd_boolean is_vxworks = elf32_arm_hash_table (info)->vxworks_p;
5e681ec4 10677
0ffa91dd 10678 if (! is_arm_elf (ibfd))
5e681ec4
PB		 10679 continue;
10680
10681 for (s = ibfd->sections; s != NULL; s = s->next)
10682 {
10683 struct elf32_arm_relocs_copied *p;
10684
6edfbbad 10685 for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
5e681ec4
PB		 10686 {
10687 if (!bfd_is_abs_section (p->section)
10688 && bfd_is_abs_section (p->section->output_section))
10689 {
10690 /* Input section has been discarded, either because
10691 it is a copy of a linkonce section or due to
10692 linker script /DISCARD/, so we'll be discarding
10693 the relocs too. */
10694 }
3348747a
NS		 10695 else if (is_vxworks
10696 && strcmp (p->section->output_section->name,
10697 ".tls_vars") == 0)
10698 {
10699 /* Relocations in vxworks .tls_vars sections are
10700 handled specially by the loader. */
10701 }
5e681ec4
PB		 10702 else if (p->count != 0)
10703 {
10704 srel = elf_section_data (p->section)->sreloc;
00a97672 10705 srel->size += p->count * RELOC_SIZE (htab);
5e681ec4
PB		 10706 if ((p->section->output_section->flags & SEC_READONLY) != 0)
10707 info->flags |= DF_TEXTREL;
10708 }
10709 }
10710 }
10711
10712 local_got = elf_local_got_refcounts (ibfd);
10713 if (!local_got)
10714 continue;
10715
0ffa91dd 10716 symtab_hdr = & elf_symtab_hdr (ibfd);
5e681ec4
PB		 10717 locsymcount = symtab_hdr->sh_info;
10718 end_local_got = local_got + locsymcount;
ba93b8ac 10719 local_tls_type = elf32_arm_local_got_tls_type (ibfd);
5e681ec4
PB		 10720 s = htab->sgot;
10721 srel = htab->srelgot;
10722 for (; local_got < end_local_got; ++local_got, ++local_tls_type)
10723 {
10724 if (*local_got > 0)
10725 {
eea6121a 10726 *local_got = s->size;
ba93b8ac
DJ		 10727 if (*local_tls_type & GOT_TLS_GD)
10728 /* TLS_GD relocs need an 8-byte structure in the GOT. */
10729 s->size += 8;
10730 if (*local_tls_type & GOT_TLS_IE)
10731 s->size += 4;
10732 if (*local_tls_type == GOT_NORMAL)
10733 s->size += 4;
10734
10735 if (info->shared || *local_tls_type == GOT_TLS_GD)
00a97672 10736 srel->size += RELOC_SIZE (htab);
5e681ec4
PB		 10737 }
10738 else
10739 *local_got = (bfd_vma) -1;
10740 }
252b5132
RH		 10741 }
10742
ba93b8ac
DJ		 10743 if (htab->tls_ldm_got.refcount > 0)
10744 {
10745 /* Allocate two GOT entries and one dynamic relocation (if necessary)
10746 for R_ARM_TLS_LDM32 relocations. */
10747 htab->tls_ldm_got.offset = htab->sgot->size;
10748 htab->sgot->size += 8;
10749 if (info->shared)
00a97672 10750 htab->srelgot->size += RELOC_SIZE (htab);
ba93b8ac
DJ		 10751 }
10752 else
10753 htab->tls_ldm_got.offset = -1;
10754
5e681ec4
PB		 10755 /* Allocate global sym .plt and .got entries, and space for global
10756 sym dynamic relocs. */
57e8b36a 10757 elf_link_hash_traverse (& htab->root, allocate_dynrelocs, info);
252b5132 10758
d504ffc8
DJ		 10759 /* Here we rummage through the found bfds to collect glue information. */
10760 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
c7b8f16e 10761 {
0ffa91dd 10762 if (! is_arm_elf (ibfd))
e44a2c9c
AM		 10763 continue;
10764
c7b8f16e
JB		 10765 /* Initialise mapping tables for code/data. */
10766 bfd_elf32_arm_init_maps (ibfd);
906e58ca 10767
c7b8f16e
JB		 10768 if (!bfd_elf32_arm_process_before_allocation (ibfd, info)
10769 || !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info))
10770 /* xgettext:c-format */
10771 _bfd_error_handler (_("Errors encountered processing file %s"),
10772 ibfd->filename);
10773 }
d504ffc8 10774
3e6b1042
DJ		 10775 /* Allocate space for the glue sections now that we've sized them. */
10776 bfd_elf32_arm_allocate_interworking_sections (info);
10777
252b5132
RH		 10778 /* The check_relocs and adjust_dynamic_symbol entry points have
10779 determined the sizes of the various dynamic sections. Allocate
10780 memory for them. */
b34976b6
AM		 10781 plt = FALSE;
10782 relocs = FALSE;
252b5132
RH		 10783 for (s = dynobj->sections; s != NULL; s = s->next)
10784 {
10785 const char * name;
252b5132
RH		 10786
10787 if ((s->flags & SEC_LINKER_CREATED) == 0)
10788 continue;
10789
10790 /* It's OK to base decisions on the section name, because none
10791 of the dynobj section names depend upon the input files. */
10792 name = bfd_get_section_name (dynobj, s);
10793
24a1ba0f 10794 if (strcmp (name, ".plt") == 0)
252b5132 10795 {
c456f082
AM		 10796 /* Remember whether there is a PLT. */
10797 plt = s->size != 0;
252b5132 10798 }
0112cd26 10799 else if (CONST_STRNEQ (name, ".rel"))
252b5132 10800 {
c456f082 10801 if (s->size != 0)
252b5132 10802 {
252b5132 10803 /* Remember whether there are any reloc sections other
00a97672
RS		 10804 than .rel(a).plt and .rela.plt.unloaded. */
10805 if (s != htab->srelplt && s != htab->srelplt2)
b34976b6 10806 relocs = TRUE;
252b5132
RH		 10807
10808 /* We use the reloc_count field as a counter if we need
10809 to copy relocs into the output file. */
10810 s->reloc_count = 0;
10811 }
10812 }
0112cd26 10813 else if (! CONST_STRNEQ (name, ".got")
c456f082 10814 && strcmp (name, ".dynbss") != 0)
252b5132
RH		 10815 {
10816 /* It's not one of our sections, so don't allocate space. */
10817 continue;
10818 }
10819
c456f082 10820 if (s->size == 0)
252b5132 10821 {
c456f082 10822 /* If we don't need this section, strip it from the
00a97672
RS		 10823 output file. This is mostly to handle .rel(a).bss and
10824 .rel(a).plt. We must create both sections in
c456f082
AM		 10825 create_dynamic_sections, because they must be created
10826 before the linker maps input sections to output
10827 sections. The linker does that before
10828 adjust_dynamic_symbol is called, and it is that
10829 function which decides whether anything needs to go
10830 into these sections. */
8423293d 10831 s->flags |= SEC_EXCLUDE;
252b5132
RH		 10832 continue;
10833 }
10834
c456f082
AM		 10835 if ((s->flags & SEC_HAS_CONTENTS) == 0)
10836 continue;
10837
252b5132 10838 /* Allocate memory for the section contents. */
906e58ca 10839 s->contents = bfd_zalloc (dynobj, s->size);
c456f082 10840 if (s->contents == NULL)
b34976b6 10841 return FALSE;
252b5132
RH		 10842 }
10843
10844 if (elf_hash_table (info)->dynamic_sections_created)
10845 {
10846 /* Add some entries to the .dynamic section. We fill in the
10847 values later, in elf32_arm_finish_dynamic_sections, but we
10848 must add the entries now so that we get the correct size for
10849 the .dynamic section. The DT_DEBUG entry is filled in by the
10850 dynamic linker and used by the debugger. */
dc810e39 10851#define add_dynamic_entry(TAG, VAL) \
5a580b3a 10852 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
dc810e39 10853
8532796c 10854 if (info->executable)
252b5132 10855 {
dc810e39 10856 if (!add_dynamic_entry (DT_DEBUG, 0))
b34976b6 10857 return FALSE;
252b5132
RH		 10858 }
10859
10860 if (plt)
10861 {
dc810e39
AM		 10862 if ( !add_dynamic_entry (DT_PLTGOT, 0)
10863 || !add_dynamic_entry (DT_PLTRELSZ, 0)
00a97672
RS		 10864 || !add_dynamic_entry (DT_PLTREL,
10865 htab->use_rel ? DT_REL : DT_RELA)
dc810e39 10866 || !add_dynamic_entry (DT_JMPREL, 0))
b34976b6 10867 return FALSE;
252b5132
RH		 10868 }
10869
10870 if (relocs)
10871 {
00a97672
RS		 10872 if (htab->use_rel)
10873 {
10874 if (!add_dynamic_entry (DT_REL, 0)
10875 || !add_dynamic_entry (DT_RELSZ, 0)
10876 || !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab)))
10877 return FALSE;
10878 }
10879 else
10880 {
10881 if (!add_dynamic_entry (DT_RELA, 0)
10882 || !add_dynamic_entry (DT_RELASZ, 0)
10883 || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
10884 return FALSE;
10885 }
252b5132
RH		 10886 }
10887
08d1f311
DJ		 10888 /* If any dynamic relocs apply to a read-only section,
10889 then we need a DT_TEXTREL entry. */
10890 if ((info->flags & DF_TEXTREL) == 0)
8029a119
NC		 10891 elf_link_hash_traverse (& htab->root, elf32_arm_readonly_dynrelocs,
10892 info);
08d1f311 10893
99e4ae17 10894 if ((info->flags & DF_TEXTREL) != 0)
252b5132 10895 {
dc810e39 10896 if (!add_dynamic_entry (DT_TEXTREL, 0))
b34976b6 10897 return FALSE;
252b5132 10898 }
7a2b07ff
NS		 10899 if (htab->vxworks_p
10900 && !elf_vxworks_add_dynamic_entries (output_bfd, info))
10901 return FALSE;
252b5132 10902 }
8532796c 10903#undef add_dynamic_entry
252b5132 10904
b34976b6 10905 return TRUE;
252b5132
RH		 10906}
10907
252b5132
RH		 10908/* Finish up dynamic symbol handling. We set the contents of various
10909 dynamic sections here. */
10910
b34976b6 10911static bfd_boolean
906e58ca
NC		 10912elf32_arm_finish_dynamic_symbol (bfd * output_bfd,
10913 struct bfd_link_info * info,
10914 struct elf_link_hash_entry * h,
10915 Elf_Internal_Sym * sym)
252b5132
RH		 10916{
10917 bfd * dynobj;
e5a52504 10918 struct elf32_arm_link_hash_table *htab;
b7693d02 10919 struct elf32_arm_link_hash_entry *eh;
252b5132
RH		 10920
10921 dynobj = elf_hash_table (info)->dynobj;
e5a52504 10922 htab = elf32_arm_hash_table (info);
b7693d02 10923 eh = (struct elf32_arm_link_hash_entry *) h;
252b5132
RH		 10924
10925 if (h->plt.offset != (bfd_vma) -1)
10926 {
10927 asection * splt;
252b5132 10928 asection * srel;
e5a52504 10929 bfd_byte *loc;
24a1ba0f 10930 bfd_vma plt_index;
947216bf 10931 Elf_Internal_Rela rel;
252b5132
RH		 10932
10933 /* This symbol has an entry in the procedure linkage table. Set
10934 it up. */
10935
10936 BFD_ASSERT (h->dynindx != -1);
10937
10938 splt = bfd_get_section_by_name (dynobj, ".plt");
00a97672 10939 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".plt"));
e5a52504 10940 BFD_ASSERT (splt != NULL && srel != NULL);
252b5132 10941
e5a52504
MM		 10942 /* Fill in the entry in the procedure linkage table. */
10943 if (htab->symbian_p)
10944 {
906e58ca 10945 put_arm_insn (htab, output_bfd,
52ab56c2
PB		 10946 elf32_arm_symbian_plt_entry[0],
10947 splt->contents + h->plt.offset);
906e58ca 10948 bfd_put_32 (output_bfd,
52ab56c2
PB		 10949 elf32_arm_symbian_plt_entry[1],
10950 splt->contents + h->plt.offset + 4);
906e58ca 10951
e5a52504 10952 /* Fill in the entry in the .rel.plt section. */
2a1b9a48
MM		 10953 rel.r_offset = (splt->output_section->vma
10954 + splt->output_offset
52ab56c2 10955 + h->plt.offset + 4);
e5a52504 10956 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
b7693d02
DJ		 10957
10958 /* Get the index in the procedure linkage table which
10959 corresponds to this symbol. This is the index of this symbol
10960 in all the symbols for which we are making plt entries. The
10961 first entry in the procedure linkage table is reserved. */
906e58ca 10962 plt_index = ((h->plt.offset - htab->plt_header_size)
b7693d02 10963 / htab->plt_entry_size);
e5a52504
MM		 10964 }
10965 else
10966 {
00a97672 10967 bfd_vma got_offset, got_address, plt_address;
e5a52504
MM		 10968 bfd_vma got_displacement;
10969 asection * sgot;
52ab56c2 10970 bfd_byte * ptr;
906e58ca 10971
e5a52504
MM		 10972 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
10973 BFD_ASSERT (sgot != NULL);
10974
b7693d02
DJ		 10975 /* Get the offset into the .got.plt table of the entry that
10976 corresponds to this function. */
10977 got_offset = eh->plt_got_offset;
10978
10979 /* Get the index in the procedure linkage table which
10980 corresponds to this symbol. This is the index of this symbol
10981 in all the symbols for which we are making plt entries. The
10982 first three entries in .got.plt are reserved; after that
10983 symbols appear in the same order as in .plt. */
10984 plt_index = (got_offset - 12) / 4;
e5a52504 10985
00a97672
RS		 10986 /* Calculate the address of the GOT entry. */
10987 got_address = (sgot->output_section->vma
10988 + sgot->output_offset
10989 + got_offset);
5e681ec4 10990
00a97672
RS		 10991 /* ...and the address of the PLT entry. */
10992 plt_address = (splt->output_section->vma
10993 + splt->output_offset
10994 + h->plt.offset);
5e681ec4 10995
52ab56c2 10996 ptr = htab->splt->contents + h->plt.offset;
00a97672
RS		 10997 if (htab->vxworks_p && info->shared)
10998 {
10999 unsigned int i;
11000 bfd_vma val;
11001
52ab56c2 11002 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
00a97672
RS		 11003 {
11004 val = elf32_arm_vxworks_shared_plt_entry[i];
11005 if (i == 2)
11006 val |= got_address - sgot->output_section->vma;
11007 if (i == 5)
11008 val |= plt_index * RELOC_SIZE (htab);
52ab56c2
PB		 11009 if (i == 2 || i == 5)
11010 bfd_put_32 (output_bfd, val, ptr);
11011 else
11012 put_arm_insn (htab, output_bfd, val, ptr);
00a97672
RS		 11013 }
11014 }
11015 else if (htab->vxworks_p)
b7693d02 11016 {
00a97672
RS		 11017 unsigned int i;
11018 bfd_vma val;
11019
d3753b85 11020 for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
00a97672
RS		 11021 {
11022 val = elf32_arm_vxworks_exec_plt_entry[i];
11023 if (i == 2)
11024 val |= got_address;
11025 if (i == 4)
11026 val |= 0xffffff & -((h->plt.offset + i * 4 + 8) >> 2);
11027 if (i == 5)
11028 val |= plt_index * RELOC_SIZE (htab);
52ab56c2
PB		 11029 if (i == 2 || i == 5)
11030 bfd_put_32 (output_bfd, val, ptr);
11031 else
11032 put_arm_insn (htab, output_bfd, val, ptr);
00a97672
RS		 11033 }
11034
11035 loc = (htab->srelplt2->contents
11036 + (plt_index * 2 + 1) * RELOC_SIZE (htab));
11037
11038 /* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
11039 referencing the GOT for this PLT entry. */
11040 rel.r_offset = plt_address + 8;
11041 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
11042 rel.r_addend = got_offset;
11043 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
11044 loc += RELOC_SIZE (htab);
11045
11046 /* Create the R_ARM_ABS32 relocation referencing the
11047 beginning of the PLT for this GOT entry. */
11048 rel.r_offset = got_address;
11049 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
11050 rel.r_addend = 0;
11051 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
b7693d02 11052 }
00a97672
RS		 11053 else
11054 {
bd97cb95 11055 bfd_signed_vma thumb_refs;
00a97672
RS		 11056 /* Calculate the displacement between the PLT slot and the
11057 entry in the GOT. The eight-byte offset accounts for the
11058 value produced by adding to pc in the first instruction
11059 of the PLT stub. */
11060 got_displacement = got_address - (plt_address + 8);
b7693d02 11061
00a97672
RS		 11062 BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
11063
bd97cb95
DJ		 11064 thumb_refs = eh->plt_thumb_refcount;
11065 if (!htab->use_blx)
11066 thumb_refs += eh->plt_maybe_thumb_refcount;
11067
11068 if (thumb_refs > 0)
00a97672 11069 {
52ab56c2
PB		 11070 put_thumb_insn (htab, output_bfd,
11071 elf32_arm_plt_thumb_stub[0], ptr - 4);
11072 put_thumb_insn (htab, output_bfd,
11073 elf32_arm_plt_thumb_stub[1], ptr - 2);
00a97672
RS		 11074 }
11075
52ab56c2
PB		 11076 put_arm_insn (htab, output_bfd,
11077 elf32_arm_plt_entry[0]
11078 | ((got_displacement & 0x0ff00000) >> 20),
11079 ptr + 0);
11080 put_arm_insn (htab, output_bfd,
11081 elf32_arm_plt_entry[1]
11082 | ((got_displacement & 0x000ff000) >> 12),
11083 ptr+ 4);
11084 put_arm_insn (htab, output_bfd,
11085 elf32_arm_plt_entry[2]
11086 | (got_displacement & 0x00000fff),
11087 ptr + 8);
5e681ec4 11088#ifdef FOUR_WORD_PLT
52ab56c2 11089 bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12);
5e681ec4 11090#endif
00a97672 11091 }
252b5132 11092
e5a52504
MM		 11093 /* Fill in the entry in the global offset table. */
11094 bfd_put_32 (output_bfd,
11095 (splt->output_section->vma
11096 + splt->output_offset),
11097 sgot->contents + got_offset);
906e58ca 11098
00a97672
RS		 11099 /* Fill in the entry in the .rel(a).plt section. */
11100 rel.r_addend = 0;
11101 rel.r_offset = got_address;
e5a52504
MM		 11102 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
11103 }
57e8b36a 11104
00a97672
RS		 11105 loc = srel->contents + plt_index * RELOC_SIZE (htab);
11106 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
252b5132 11107
f5385ebf 11108 if (!h->def_regular)
252b5132
RH		 11109 {
11110 /* Mark the symbol as undefined, rather than as defined in
11111 the .plt section. Leave the value alone. */
11112 sym->st_shndx = SHN_UNDEF;
d982ba73
PB		 11113 /* If the symbol is weak, we do need to clear the value.
11114 Otherwise, the PLT entry would provide a definition for
11115 the symbol even if the symbol wasn't defined anywhere,
11116 and so the symbol would never be NULL. */
f5385ebf 11117 if (!h->ref_regular_nonweak)
d982ba73 11118 sym->st_value = 0;
252b5132
RH		 11119 }
11120 }
11121
ba93b8ac
DJ		 11122 if (h->got.offset != (bfd_vma) -1
11123 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_GD) == 0
11124 && (elf32_arm_hash_entry (h)->tls_type & GOT_TLS_IE) == 0)
252b5132
RH		 11125 {
11126 asection * sgot;
11127 asection * srel;
947216bf
AM		 11128 Elf_Internal_Rela rel;
11129 bfd_byte *loc;
00a97672 11130 bfd_vma offset;
252b5132
RH		 11131
11132 /* This symbol has an entry in the global offset table. Set it
11133 up. */
252b5132 11134 sgot = bfd_get_section_by_name (dynobj, ".got");
00a97672 11135 srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (htab, ".got"));
252b5132
RH		 11136 BFD_ASSERT (sgot != NULL && srel != NULL);
11137
00a97672
RS		 11138 offset = (h->got.offset & ~(bfd_vma) 1);
11139 rel.r_addend = 0;
252b5132
RH		 11140 rel.r_offset = (sgot->output_section->vma
11141 + sgot->output_offset
00a97672 11142 + offset);
252b5132 11143
5e681ec4
PB		 11144 /* If this is a static link, or it is a -Bsymbolic link and the
11145 symbol is defined locally or was forced to be local because
11146 of a version file, we just want to emit a RELATIVE reloc.
11147 The entry in the global offset table will already have been
11148 initialized in the relocate_section function. */
252b5132 11149 if (info->shared
5e681ec4
PB		 11150 && SYMBOL_REFERENCES_LOCAL (info, h))
11151 {
906e58ca 11152 BFD_ASSERT ((h->got.offset & 1) != 0);
5e681ec4 11153 rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
00a97672
RS		 11154 if (!htab->use_rel)
11155 {
11156 rel.r_addend = bfd_get_32 (output_bfd, sgot->contents + offset);
11157 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
11158 }
5e681ec4 11159 }
252b5132
RH		 11160 else
11161 {
906e58ca 11162 BFD_ASSERT ((h->got.offset & 1) == 0);
00a97672 11163 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + offset);
252b5132
RH		 11164 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
11165 }
11166
00a97672
RS		 11167 loc = srel->contents + srel->reloc_count++ * RELOC_SIZE (htab);
11168 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
252b5132
RH		 11169 }
11170
f5385ebf 11171 if (h->needs_copy)
252b5132
RH		 11172 {
11173 asection * s;
947216bf
AM		 11174 Elf_Internal_Rela rel;
11175 bfd_byte *loc;
252b5132
RH		 11176
11177 /* This symbol needs a copy reloc. Set it up. */
252b5132
RH		 11178 BFD_ASSERT (h->dynindx != -1
11179 && (h->root.type == bfd_link_hash_defined
11180 || h->root.type == bfd_link_hash_defweak));
11181
11182 s = bfd_get_section_by_name (h->root.u.def.section->owner,
00a97672 11183 RELOC_SECTION (htab, ".bss"));
252b5132
RH		 11184 BFD_ASSERT (s != NULL);
11185
00a97672 11186 rel.r_addend = 0;
252b5132
RH		 11187 rel.r_offset = (h->root.u.def.value
11188 + h->root.u.def.section->output_section->vma
11189 + h->root.u.def.section->output_offset);
11190 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
00a97672
RS		 11191 loc = s->contents + s->reloc_count++ * RELOC_SIZE (htab);
11192 SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
252b5132
RH		 11193 }
11194
00a97672
RS		 11195 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
11196 the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
11197 to the ".got" section. */
252b5132 11198 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
00a97672 11199 || (!htab->vxworks_p && h == htab->root.hgot))
252b5132
RH		 11200 sym->st_shndx = SHN_ABS;
11201
b34976b6 11202 return TRUE;
252b5132
RH		 11203}
11204
11205/* Finish up the dynamic sections. */
11206
b34976b6 11207static bfd_boolean
57e8b36a 11208elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
252b5132
RH		 11209{
11210 bfd * dynobj;
11211 asection * sgot;
11212 asection * sdyn;
11213
11214 dynobj = elf_hash_table (info)->dynobj;
11215
11216 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
229fcec5 11217 BFD_ASSERT (elf32_arm_hash_table (info)->symbian_p || sgot != NULL);
252b5132
RH		 11218 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
11219
11220 if (elf_hash_table (info)->dynamic_sections_created)
11221 {
11222 asection *splt;
11223 Elf32_External_Dyn *dyncon, *dynconend;
229fcec5 11224 struct elf32_arm_link_hash_table *htab;
252b5132 11225
229fcec5 11226 htab = elf32_arm_hash_table (info);
252b5132 11227 splt = bfd_get_section_by_name (dynobj, ".plt");
24a1ba0f 11228 BFD_ASSERT (splt != NULL && sdyn != NULL);
252b5132
RH		 11229
11230 dyncon = (Elf32_External_Dyn *) sdyn->contents;
eea6121a 11231 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
9b485d32 11232
252b5132
RH		 11233 for (; dyncon < dynconend; dyncon++)
11234 {
11235 Elf_Internal_Dyn dyn;
11236 const char * name;
11237 asection * s;
11238
11239 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
11240
11241 switch (dyn.d_tag)
11242 {
229fcec5
MM		 11243 unsigned int type;
11244
252b5132 11245 default:
7a2b07ff
NS		 11246 if (htab->vxworks_p
11247 && elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
11248 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
252b5132
RH		 11249 break;
11250
229fcec5
MM		 11251 case DT_HASH:
11252 name = ".hash";
11253 goto get_vma_if_bpabi;
11254 case DT_STRTAB:
11255 name = ".dynstr";
11256 goto get_vma_if_bpabi;
11257 case DT_SYMTAB:
11258 name = ".dynsym";
11259 goto get_vma_if_bpabi;
c0042f5d
MM		 11260 case DT_VERSYM:
11261 name = ".gnu.version";
11262 goto get_vma_if_bpabi;
11263 case DT_VERDEF:
11264 name = ".gnu.version_d";
11265 goto get_vma_if_bpabi;
11266 case DT_VERNEED:
11267 name = ".gnu.version_r";
11268 goto get_vma_if_bpabi;
11269
252b5132
RH		 11270 case DT_PLTGOT:
11271 name = ".got";
11272 goto get_vma;
11273 case DT_JMPREL:
00a97672 11274 name = RELOC_SECTION (htab, ".plt");
252b5132
RH		 11275 get_vma:
11276 s = bfd_get_section_by_name (output_bfd, name);
11277 BFD_ASSERT (s != NULL);
229fcec5
MM		 11278 if (!htab->symbian_p)
11279 dyn.d_un.d_ptr = s->vma;
11280 else
11281 /* In the BPABI, tags in the PT_DYNAMIC section point
11282 at the file offset, not the memory address, for the
11283 convenience of the post linker. */
11284 dyn.d_un.d_ptr = s->filepos;
252b5132
RH		 11285 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
11286 break;
11287
229fcec5
MM		 11288 get_vma_if_bpabi:
11289 if (htab->symbian_p)
11290 goto get_vma;
11291 break;
11292
252b5132 11293 case DT_PLTRELSZ:
00a97672
RS		 11294 s = bfd_get_section_by_name (output_bfd,
11295 RELOC_SECTION (htab, ".plt"));
252b5132 11296 BFD_ASSERT (s != NULL);
eea6121a 11297 dyn.d_un.d_val = s->size;
252b5132
RH		 11298 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
11299 break;
906e58ca 11300
252b5132 11301 case DT_RELSZ:
00a97672 11302 case DT_RELASZ:
229fcec5
MM		 11303 if (!htab->symbian_p)
11304 {
11305 /* My reading of the SVR4 ABI indicates that the
11306 procedure linkage table relocs (DT_JMPREL) should be
11307 included in the overall relocs (DT_REL). This is
11308 what Solaris does. However, UnixWare can not handle
11309 that case. Therefore, we override the DT_RELSZ entry
11310 here to make it not include the JMPREL relocs. Since
00a97672 11311 the linker script arranges for .rel(a).plt to follow all
229fcec5
MM		 11312 other relocation sections, we don't have to worry
11313 about changing the DT_REL entry. */
00a97672
RS		 11314 s = bfd_get_section_by_name (output_bfd,
11315 RELOC_SECTION (htab, ".plt"));
229fcec5
MM		 11316 if (s != NULL)
11317 dyn.d_un.d_val -= s->size;
11318 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
11319 break;
11320 }
8029a119 11321 /* Fall through. */
229fcec5
MM		 11322
11323 case DT_REL:
11324 case DT_RELA:
229fcec5
MM		 11325 /* In the BPABI, the DT_REL tag must point at the file
11326 offset, not the VMA, of the first relocation
11327 section. So, we use code similar to that in
11328 elflink.c, but do not check for SHF_ALLOC on the
11329 relcoation section, since relocations sections are
11330 never allocated under the BPABI. The comments above
11331 about Unixware notwithstanding, we include all of the
11332 relocations here. */
11333 if (htab->symbian_p)
11334 {
11335 unsigned int i;
11336 type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
11337 ? SHT_REL : SHT_RELA);
11338 dyn.d_un.d_val = 0;
11339 for (i = 1; i < elf_numsections (output_bfd); i++)
11340 {
906e58ca 11341 Elf_Internal_Shdr *hdr
229fcec5
MM		 11342 = elf_elfsections (output_bfd)[i];
11343 if (hdr->sh_type == type)
11344 {
906e58ca 11345 if (dyn.d_tag == DT_RELSZ
229fcec5
MM		 11346 || dyn.d_tag == DT_RELASZ)
11347 dyn.d_un.d_val += hdr->sh_size;
de52dba4
AM		 11348 else if ((ufile_ptr) hdr->sh_offset
11349 <= dyn.d_un.d_val - 1)
229fcec5
MM		 11350 dyn.d_un.d_val = hdr->sh_offset;
11351 }
11352 }
11353 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
11354 }
252b5132 11355 break;
88f7bcd5
NC		 11356
11357 /* Set the bottom bit of DT_INIT/FINI if the
11358 corresponding function is Thumb. */
11359 case DT_INIT:
11360 name = info->init_function;
11361 goto get_sym;
11362 case DT_FINI:
11363 name = info->fini_function;
11364 get_sym:
11365 /* If it wasn't set by elf_bfd_final_link
4cc11e76 11366 then there is nothing to adjust. */
88f7bcd5
NC		 11367 if (dyn.d_un.d_val != 0)
11368 {
11369 struct elf_link_hash_entry * eh;
11370
11371 eh = elf_link_hash_lookup (elf_hash_table (info), name,
b34976b6 11372 FALSE, FALSE, TRUE);
906e58ca 11373 if (eh != NULL
88f7bcd5
NC		 11374 && ELF_ST_TYPE (eh->type) == STT_ARM_TFUNC)
11375 {
11376 dyn.d_un.d_val |= 1;
b34976b6 11377 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
88f7bcd5
NC		 11378 }
11379 }
11380 break;
252b5132
RH		 11381 }
11382 }
11383
24a1ba0f 11384 /* Fill in the first entry in the procedure linkage table. */
e5a52504 11385 if (splt->size > 0 && elf32_arm_hash_table (info)->plt_header_size)
f7a74f8c 11386 {
00a97672
RS		 11387 const bfd_vma *plt0_entry;
11388 bfd_vma got_address, plt_address, got_displacement;
11389
11390 /* Calculate the addresses of the GOT and PLT. */
11391 got_address = sgot->output_section->vma + sgot->output_offset;
11392 plt_address = splt->output_section->vma + splt->output_offset;
11393
11394 if (htab->vxworks_p)
11395 {
11396 /* The VxWorks GOT is relocated by the dynamic linker.
11397 Therefore, we must emit relocations rather than simply
11398 computing the values now. */
11399 Elf_Internal_Rela rel;
11400
11401 plt0_entry = elf32_arm_vxworks_exec_plt0_entry;
52ab56c2
PB		 11402 put_arm_insn (htab, output_bfd, plt0_entry[0],
11403 splt->contents + 0);
11404 put_arm_insn (htab, output_bfd, plt0_entry[1],
11405 splt->contents + 4);
11406 put_arm_insn (htab, output_bfd, plt0_entry[2],
11407 splt->contents + 8);
00a97672
RS		 11408 bfd_put_32 (output_bfd, got_address, splt->contents + 12);
11409
8029a119 11410 /* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
00a97672
RS		 11411 rel.r_offset = plt_address + 12;
11412 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
11413 rel.r_addend = 0;
11414 SWAP_RELOC_OUT (htab) (output_bfd, &rel,
11415 htab->srelplt2->contents);
11416 }
11417 else
11418 {
11419 got_displacement = got_address - (plt_address + 16);
11420
11421 plt0_entry = elf32_arm_plt0_entry;
52ab56c2
PB		 11422 put_arm_insn (htab, output_bfd, plt0_entry[0],
11423 splt->contents + 0);
11424 put_arm_insn (htab, output_bfd, plt0_entry[1],
11425 splt->contents + 4);
11426 put_arm_insn (htab, output_bfd, plt0_entry[2],
11427 splt->contents + 8);
11428 put_arm_insn (htab, output_bfd, plt0_entry[3],
11429 splt->contents + 12);
5e681ec4 11430
5e681ec4 11431#ifdef FOUR_WORD_PLT
00a97672
RS		 11432 /* The displacement value goes in the otherwise-unused
11433 last word of the second entry. */
11434 bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
5e681ec4 11435#else
00a97672 11436 bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
5e681ec4 11437#endif
00a97672 11438 }
f7a74f8c 11439 }
252b5132
RH		 11440
11441 /* UnixWare sets the entsize of .plt to 4, although that doesn't
11442 really seem like the right value. */
74541ad4
AM		 11443 if (splt->output_section->owner == output_bfd)
11444 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
00a97672
RS		 11445
11446 if (htab->vxworks_p && !info->shared && htab->splt->size > 0)
11447 {
11448 /* Correct the .rel(a).plt.unloaded relocations. They will have
11449 incorrect symbol indexes. */
11450 int num_plts;
eed62c48 11451 unsigned char *p;
00a97672
RS		 11452
11453 num_plts = ((htab->splt->size - htab->plt_header_size)
11454 / htab->plt_entry_size);
11455 p = htab->srelplt2->contents + RELOC_SIZE (htab);
11456
11457 for (; num_plts; num_plts--)
11458 {
11459 Elf_Internal_Rela rel;
11460
11461 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
11462 rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
11463 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
11464 p += RELOC_SIZE (htab);
11465
11466 SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
11467 rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
11468 SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
11469 p += RELOC_SIZE (htab);
11470 }
11471 }
252b5132
RH		 11472 }
11473
11474 /* Fill in the first three entries in the global offset table. */
229fcec5 11475 if (sgot)
252b5132 11476 {
229fcec5
MM		 11477 if (sgot->size > 0)
11478 {
11479 if (sdyn == NULL)
11480 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
11481 else
11482 bfd_put_32 (output_bfd,
11483 sdyn->output_section->vma + sdyn->output_offset,
11484 sgot->contents);
11485 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
11486 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
11487 }
252b5132 11488
229fcec5
MM		 11489 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
11490 }
252b5132 11491
b34976b6 11492 return TRUE;
252b5132
RH		 11493}
11494
ba96a88f 11495static void
57e8b36a 11496elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
ba96a88f 11497{
9b485d32 11498 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
e489d0ae 11499 struct elf32_arm_link_hash_table *globals;
ba96a88f
NC		 11500
11501 i_ehdrp = elf_elfheader (abfd);
11502
94a3258f
PB		 11503 if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
11504 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
11505 else
11506 i_ehdrp->e_ident[EI_OSABI] = 0;
ba96a88f 11507 i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
e489d0ae 11508
93204d3a
PB		 11509 if (link_info)
11510 {
11511 globals = elf32_arm_hash_table (link_info);
11512 if (globals->byteswap_code)
11513 i_ehdrp->e_flags |= EF_ARM_BE8;
11514 }
ba96a88f
NC		 11515}
11516
99e4ae17 11517static enum elf_reloc_type_class
57e8b36a 11518elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
99e4ae17 11519{
f51e552e 11520 switch ((int) ELF32_R_TYPE (rela->r_info))
99e4ae17
AJ		 11521 {
11522 case R_ARM_RELATIVE:
11523 return reloc_class_relative;
11524 case R_ARM_JUMP_SLOT:
11525 return reloc_class_plt;
11526 case R_ARM_COPY:
11527 return reloc_class_copy;
11528 default:
11529 return reloc_class_normal;
11530 }
11531}
11532
e16bb312
NC		 11533/* Set the right machine number for an Arm ELF file. */
11534
11535static bfd_boolean
57e8b36a 11536elf32_arm_section_flags (flagword *flags, const Elf_Internal_Shdr *hdr)
e16bb312
NC		 11537{
11538 if (hdr->sh_type == SHT_NOTE)
11539 *flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_CONTENTS;
11540
11541 return TRUE;
11542}
11543
e489d0ae 11544static void
57e8b36a 11545elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
e16bb312 11546{
5a6c6817 11547 bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
e16bb312
NC		 11548}
11549
40a18ebd
NC		 11550/* Return TRUE if this is an unwinding table entry. */
11551
11552static bfd_boolean
11553is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
11554{
0112cd26
NC		 11555 return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind)
11556 || CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once));
40a18ebd
NC		 11557}
11558
11559
11560/* Set the type and flags for an ARM section. We do this by
11561 the section name, which is a hack, but ought to work. */
11562
11563static bfd_boolean
11564elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
11565{
11566 const char * name;
11567
11568 name = bfd_get_section_name (abfd, sec);
11569
11570 if (is_arm_elf_unwind_section_name (abfd, name))
11571 {
11572 hdr->sh_type = SHT_ARM_EXIDX;
11573 hdr->sh_flags |= SHF_LINK_ORDER;
11574 }
11575 return TRUE;
11576}
11577
6dc132d9
L		 11578/* Handle an ARM specific section when reading an object file. This is
11579 called when bfd_section_from_shdr finds a section with an unknown
11580 type. */
40a18ebd
NC		 11581
11582static bfd_boolean
11583elf32_arm_section_from_shdr (bfd *abfd,
11584 Elf_Internal_Shdr * hdr,
6dc132d9
L		 11585 const char *name,
11586 int shindex)
40a18ebd
NC		 11587{
11588 /* There ought to be a place to keep ELF backend specific flags, but
11589 at the moment there isn't one. We just keep track of the
11590 sections by their name, instead. Fortunately, the ABI gives
11591 names for all the ARM specific sections, so we will probably get
11592 away with this. */
11593 switch (hdr->sh_type)
11594 {
11595 case SHT_ARM_EXIDX:
0951f019
RE		 11596 case SHT_ARM_PREEMPTMAP:
11597 case SHT_ARM_ATTRIBUTES:
40a18ebd
NC		 11598 break;
11599
11600 default:
11601 return FALSE;
11602 }
11603
6dc132d9 11604 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
40a18ebd
NC		 11605 return FALSE;
11606
11607 return TRUE;
11608}
e489d0ae 11609
8e3de13a
NC		 11610/* A structure used to record a list of sections, independently
11611 of the next and prev fields in the asection structure. */
11612typedef struct section_list
11613{
11614 asection * sec;
11615 struct section_list * next;
11616 struct section_list * prev;
11617}
11618section_list;
11619
11620/* Unfortunately we need to keep a list of sections for which
11621 an _arm_elf_section_data structure has been allocated. This
11622 is because it is possible for functions like elf32_arm_write_section
11623 to be called on a section which has had an elf_data_structure
11624 allocated for it (and so the used_by_bfd field is valid) but
11625 for which the ARM extended version of this structure - the
11626 _arm_elf_section_data structure - has not been allocated. */
11627static section_list * sections_with_arm_elf_section_data = NULL;
11628
11629static void
957c6e41 11630record_section_with_arm_elf_section_data (asection * sec)
8e3de13a
NC		 11631{
11632 struct section_list * entry;
11633
957c6e41 11634 entry = bfd_malloc (sizeof (* entry));
8e3de13a
NC		 11635 if (entry == NULL)
11636 return;
11637 entry->sec = sec;
11638 entry->next = sections_with_arm_elf_section_data;
11639 entry->prev = NULL;
11640 if (entry->next != NULL)
11641 entry->next->prev = entry;
11642 sections_with_arm_elf_section_data = entry;
11643}
11644
44444f50
NC		 11645static struct section_list *
11646find_arm_elf_section_entry (asection * sec)
8e3de13a
NC		 11647{
11648 struct section_list * entry;
bd4aae00 11649 static struct section_list * last_entry = NULL;
8e3de13a 11650
bd4aae00
NC		 11651 /* This is a short cut for the typical case where the sections are added
11652 to the sections_with_arm_elf_section_data list in forward order and
11653 then looked up here in backwards order. This makes a real difference
11654 to the ld-srec/sec64k.exp linker test. */
44444f50 11655 entry = sections_with_arm_elf_section_data;
bd4aae00
NC		 11656 if (last_entry != NULL)
11657 {
11658 if (last_entry->sec == sec)
44444f50
NC		 11659 entry = last_entry;
11660 else if (last_entry->next != NULL
11661 && last_entry->next->sec == sec)
11662 entry = last_entry->next;
bd4aae00 11663 }
44444f50
NC		 11664
11665 for (; entry; entry = entry->next)
8e3de13a 11666 if (entry->sec == sec)
44444f50 11667 break;
bd4aae00 11668
44444f50
NC		 11669 if (entry)
11670 /* Record the entry prior to this one - it is the entry we are most
11671 likely to want to locate next time. Also this way if we have been
11672 called from unrecord_section_with_arm_elf_section_data() we will not
11673 be caching a pointer that is about to be freed. */
11674 last_entry = entry->prev;
11675
11676 return entry;
11677}
11678
11679static _arm_elf_section_data *
11680get_arm_elf_section_data (asection * sec)
11681{
11682 struct section_list * entry;
11683
11684 entry = find_arm_elf_section_entry (sec);
11685
11686 if (entry)
11687 return elf32_arm_section_data (entry->sec);
11688 else
11689 return NULL;
8e3de13a
NC		 11690}
11691
11692static void
11693unrecord_section_with_arm_elf_section_data (asection * sec)
11694{
11695 struct section_list * entry;
11696
44444f50
NC		 11697 entry = find_arm_elf_section_entry (sec);
11698
11699 if (entry)
11700 {
11701 if (entry->prev != NULL)
11702 entry->prev->next = entry->next;
11703 if (entry->next != NULL)
11704 entry->next->prev = entry->prev;
11705 if (entry == sections_with_arm_elf_section_data)
11706 sections_with_arm_elf_section_data = entry->next;
11707 free (entry);
11708 }
8e3de13a
NC		 11709}
11710
e489d0ae 11711
4e617b1e
PB		 11712typedef struct
11713{
11714 void *finfo;
11715 struct bfd_link_info *info;
91a5743d
PB		 11716 asection *sec;
11717 int sec_shndx;
4e617b1e
PB		 11718 bfd_boolean (*func) (void *, const char *, Elf_Internal_Sym *,
11719 asection *, struct elf_link_hash_entry *);
11720} output_arch_syminfo;
11721
11722enum map_symbol_type
11723{
11724 ARM_MAP_ARM,
11725 ARM_MAP_THUMB,
11726 ARM_MAP_DATA
11727};
11728
11729
7413f23f 11730/* Output a single mapping symbol. */
4e617b1e
PB		 11731
11732static bfd_boolean
7413f23f
DJ		 11733elf32_arm_output_map_sym (output_arch_syminfo *osi,
11734 enum map_symbol_type type,
11735 bfd_vma offset)
4e617b1e
PB		 11736{
11737 static const char *names[3] = {"$a", "$t", "$d"};
11738 struct elf32_arm_link_hash_table *htab;
11739 Elf_Internal_Sym sym;
11740
11741 htab = elf32_arm_hash_table (osi->info);
91a5743d
PB		 11742 sym.st_value = osi->sec->output_section->vma
11743 + osi->sec->output_offset
11744 + offset;
4e617b1e
PB		 11745 sym.st_size = 0;
11746 sym.st_other = 0;
11747 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
91a5743d
PB		 11748 sym.st_shndx = osi->sec_shndx;
11749 if (!osi->func (osi->finfo, names[type], &sym, osi->sec, NULL))
4e617b1e
PB		 11750 return FALSE;
11751 return TRUE;
11752}
11753
11754
11755/* Output mapping symbols for PLT entries associated with H. */
11756
11757static bfd_boolean
11758elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf)
11759{
11760 output_arch_syminfo *osi = (output_arch_syminfo *) inf;
11761 struct elf32_arm_link_hash_table *htab;
11762 struct elf32_arm_link_hash_entry *eh;
11763 bfd_vma addr;
11764
11765 htab = elf32_arm_hash_table (osi->info);
11766
11767 if (h->root.type == bfd_link_hash_indirect)
11768 return TRUE;
11769
11770 if (h->root.type == bfd_link_hash_warning)
11771 /* When warning symbols are created, they **replace** the "real"
11772 entry in the hash table, thus we never get to see the real
11773 symbol in a hash traversal. So look at it now. */
11774 h = (struct elf_link_hash_entry *) h->root.u.i.link;
11775
11776 if (h->plt.offset == (bfd_vma) -1)
11777 return TRUE;
11778
11779 eh = (struct elf32_arm_link_hash_entry *) h;
11780 addr = h->plt.offset;
11781 if (htab->symbian_p)
11782 {
7413f23f 11783 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
4e617b1e 11784 return FALSE;
7413f23f 11785 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4))
4e617b1e
PB		 11786 return FALSE;
11787 }
11788 else if (htab->vxworks_p)
11789 {
7413f23f 11790 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
4e617b1e 11791 return FALSE;
7413f23f 11792 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
4e617b1e 11793 return FALSE;
7413f23f 11794 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 12))
4e617b1e 11795 return FALSE;
7413f23f 11796 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 20))
4e617b1e
PB		 11797 return FALSE;
11798 }
11799 else
11800 {
bd97cb95
DJ		 11801 bfd_signed_vma thumb_refs;
11802
11803 thumb_refs = eh->plt_thumb_refcount;
11804 if (!htab->use_blx)
11805 thumb_refs += eh->plt_maybe_thumb_refcount;
4e617b1e 11806
bd97cb95 11807 if (thumb_refs > 0)
4e617b1e 11808 {
7413f23f 11809 if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr - 4))
4e617b1e
PB		 11810 return FALSE;
11811 }
11812#ifdef FOUR_WORD_PLT
7413f23f 11813 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
4e617b1e 11814 return FALSE;
7413f23f 11815 if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12))
4e617b1e
PB		 11816 return FALSE;
11817#else
906e58ca 11818 /* A three-word PLT with no Thumb thunk contains only Arm code,
4e617b1e
PB		 11819 so only need to output a mapping symbol for the first PLT entry and
11820 entries with thumb thunks. */
bd97cb95 11821 if (thumb_refs > 0 || addr == 20)
4e617b1e 11822 {
7413f23f 11823 if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
4e617b1e
PB		 11824 return FALSE;
11825 }
11826#endif
11827 }
11828
11829 return TRUE;
11830}
11831
7413f23f
DJ		 11832/* Output a single local symbol for a generated stub. */
11833
11834static bfd_boolean
11835elf32_arm_output_stub_sym (output_arch_syminfo *osi, const char *name,
11836 bfd_vma offset, bfd_vma size)
11837{
11838 struct elf32_arm_link_hash_table *htab;
11839 Elf_Internal_Sym sym;
11840
11841 htab = elf32_arm_hash_table (osi->info);
11842 sym.st_value = osi->sec->output_section->vma
11843 + osi->sec->output_offset
11844 + offset;
11845 sym.st_size = size;
11846 sym.st_other = 0;
11847 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
11848 sym.st_shndx = osi->sec_shndx;
11849 if (!osi->func (osi->finfo, name, &sym, osi->sec, NULL))
11850 return FALSE;
11851 return TRUE;
11852}
4e617b1e 11853
da5938a2 11854static bfd_boolean
8029a119
NC		 11855arm_map_one_stub (struct bfd_hash_entry * gen_entry,
11856 void * in_arg)
da5938a2
NC		 11857{
11858 struct elf32_arm_stub_hash_entry *stub_entry;
11859 struct bfd_link_info *info;
11860 struct elf32_arm_link_hash_table *htab;
11861 asection *stub_sec;
11862 bfd_vma addr;
7413f23f 11863 char *stub_name;
9a008db3 11864 output_arch_syminfo *osi;
461a49ca
DJ		 11865 const insn_sequence *template;
11866 enum stub_insn_type prev_type;
11867 int size;
11868 int i;
11869 enum map_symbol_type sym_type;
da5938a2
NC		 11870
11871 /* Massage our args to the form they really have. */
11872 stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
9a008db3 11873 osi = (output_arch_syminfo *) in_arg;
da5938a2 11874
da5938a2
NC		 11875 info = osi->info;
11876
11877 htab = elf32_arm_hash_table (info);
11878 stub_sec = stub_entry->stub_sec;
11879
11880 /* Ensure this stub is attached to the current section being
7413f23f 11881 processed. */
da5938a2
NC		 11882 if (stub_sec != osi->sec)
11883 return TRUE;
11884
7413f23f
DJ		 11885 addr = (bfd_vma) stub_entry->stub_offset;
11886 stub_name = stub_entry->output_name;
da5938a2 11887
461a49ca 11888 template = stub_entry->stub_template;
4e31c731 11889 switch (template[0].type)
7413f23f 11890 {
461a49ca
DJ		 11891 case ARM_TYPE:
11892 if (!elf32_arm_output_stub_sym (osi, stub_name, addr, stub_entry->stub_size))
da5938a2
NC		 11893 return FALSE;
11894 break;
461a49ca
DJ		 11895 case THUMB16_TYPE:
11896 if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1,
11897 stub_entry->stub_size))
da5938a2
NC		 11898 return FALSE;
11899 break;
11900 default:
11901 BFD_FAIL ();
4e31c731 11902 return FALSE;
7413f23f 11903 }
da5938a2 11904
461a49ca
DJ		 11905 prev_type = DATA_TYPE;
11906 size = 0;
11907 for (i = 0; i < stub_entry->stub_template_size; i++)
11908 {
4e31c731 11909 switch (template[i].type)
461a49ca
DJ		 11910 {
11911 case ARM_TYPE:
11912 sym_type = ARM_MAP_ARM;
11913 break;
11914
11915 case THUMB16_TYPE:
11916 sym_type = ARM_MAP_THUMB;
11917 break;
11918
11919 case DATA_TYPE:
11920 sym_type = ARM_MAP_DATA;
11921 break;
11922
11923 default:
11924 BFD_FAIL ();
4e31c731 11925 return FALSE;
461a49ca
DJ		 11926 }
11927
11928 if (template[i].type != prev_type)
11929 {
11930 prev_type = template[i].type;
11931 if (!elf32_arm_output_map_sym (osi, sym_type, addr + size))
11932 return FALSE;
11933 }
11934
4e31c731 11935 switch (template[i].type)
461a49ca
DJ		 11936 {
11937 case ARM_TYPE:
11938 size += 4;
11939 break;
11940
11941 case THUMB16_TYPE:
11942 size += 2;
11943 break;
11944
11945 case DATA_TYPE:
11946 size += 4;
11947 break;
11948
11949 default:
11950 BFD_FAIL ();
4e31c731 11951 return FALSE;
461a49ca
DJ		 11952 }
11953 }
11954
da5938a2
NC		 11955 return TRUE;
11956}
11957
91a5743d 11958/* Output mapping symbols for linker generated sections. */
4e617b1e
PB		 11959
11960static bfd_boolean
11961elf32_arm_output_arch_local_syms (bfd *output_bfd,
906e58ca
NC		 11962 struct bfd_link_info *info,
11963 void *finfo,
11964 bfd_boolean (*func) (void *, const char *,
11965 Elf_Internal_Sym *,
11966 asection *,
11967 struct elf_link_hash_entry *))
4e617b1e
PB		 11968{
11969 output_arch_syminfo osi;
11970 struct elf32_arm_link_hash_table *htab;
91a5743d
PB		 11971 bfd_vma offset;
11972 bfd_size_type size;
4e617b1e
PB		 11973
11974 htab = elf32_arm_hash_table (info);
906e58ca 11975 check_use_blx (htab);
91a5743d 11976
4e617b1e
PB		 11977 osi.finfo = finfo;
11978 osi.info = info;
11979 osi.func = func;
906e58ca 11980
91a5743d
PB		 11981 /* ARM->Thumb glue. */
11982 if (htab->arm_glue_size > 0)
11983 {
11984 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
11985 ARM2THUMB_GLUE_SECTION_NAME);
11986
11987 osi.sec_shndx = _bfd_elf_section_from_bfd_section
11988 (output_bfd, osi.sec->output_section);
11989 if (info->shared || htab->root.is_relocatable_executable
11990 || htab->pic_veneer)
11991 size = ARM2THUMB_PIC_GLUE_SIZE;
11992 else if (htab->use_blx)
11993 size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
11994 else
11995 size = ARM2THUMB_STATIC_GLUE_SIZE;
4e617b1e 11996
91a5743d
PB		 11997 for (offset = 0; offset < htab->arm_glue_size; offset += size)
11998 {
7413f23f
DJ		 11999 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset);
12000 elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, offset + size - 4);
91a5743d
PB		 12001 }
12002 }
12003
12004 /* Thumb->ARM glue. */
12005 if (htab->thumb_glue_size > 0)
12006 {
12007 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
12008 THUMB2ARM_GLUE_SECTION_NAME);
12009
12010 osi.sec_shndx = _bfd_elf_section_from_bfd_section
12011 (output_bfd, osi.sec->output_section);
12012 size = THUMB2ARM_GLUE_SIZE;
12013
12014 for (offset = 0; offset < htab->thumb_glue_size; offset += size)
12015 {
7413f23f
DJ		 12016 elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, offset);
12017 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset + 4);
91a5743d
PB		 12018 }
12019 }
12020
845b51d6
PB		 12021 /* ARMv4 BX veneers. */
12022 if (htab->bx_glue_size > 0)
12023 {
12024 osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
12025 ARM_BX_GLUE_SECTION_NAME);
12026
12027 osi.sec_shndx = _bfd_elf_section_from_bfd_section
12028 (output_bfd, osi.sec->output_section);
12029
7413f23f 12030 elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0);
845b51d6
PB		 12031 }
12032
8029a119
NC		 12033 /* Long calls stubs. */
12034 if (htab->stub_bfd && htab->stub_bfd->sections)
12035 {
da5938a2 12036 asection* stub_sec;
8029a119 12037
da5938a2
NC		 12038 for (stub_sec = htab->stub_bfd->sections;
12039 stub_sec != NULL;
8029a119
NC		 12040 stub_sec = stub_sec->next)
12041 {
12042 /* Ignore non-stub sections. */
12043 if (!strstr (stub_sec->name, STUB_SUFFIX))
12044 continue;
da5938a2 12045
8029a119 12046 osi.sec = stub_sec;
da5938a2 12047
8029a119
NC		 12048 osi.sec_shndx = _bfd_elf_section_from_bfd_section
12049 (output_bfd, osi.sec->output_section);
da5938a2 12050
8029a119
NC		 12051 bfd_hash_traverse (&htab->stub_hash_table, arm_map_one_stub, &osi);
12052 }
12053 }
da5938a2 12054
91a5743d
PB		 12055 /* Finally, output mapping symbols for the PLT. */
12056 if (!htab->splt || htab->splt->size == 0)
12057 return TRUE;
12058
12059 osi.sec_shndx = _bfd_elf_section_from_bfd_section (output_bfd,
8029a119 12060 htab->splt->output_section);
91a5743d 12061 osi.sec = htab->splt;
4e617b1e
PB		 12062 /* Output mapping symbols for the plt header. SymbianOS does not have a
12063 plt header. */
12064 if (htab->vxworks_p)
12065 {
12066 /* VxWorks shared libraries have no PLT header. */
12067 if (!info->shared)
12068 {
7413f23f 12069 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
4e617b1e 12070 return FALSE;
7413f23f 12071 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12))
4e617b1e
PB		 12072 return FALSE;
12073 }
12074 }
12075 else if (!htab->symbian_p)
12076 {
7413f23f 12077 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
4e617b1e
PB		 12078 return FALSE;
12079#ifndef FOUR_WORD_PLT
7413f23f 12080 if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 16))
4e617b1e
PB		 12081 return FALSE;
12082#endif
12083 }
12084
12085 elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, (void *) &osi);
12086 return TRUE;
12087}
12088
e489d0ae
PB		 12089/* Allocate target specific section data. */
12090
12091static bfd_boolean
12092elf32_arm_new_section_hook (bfd *abfd, asection *sec)
12093{
f592407e
AM		 12094 if (!sec->used_by_bfd)
12095 {
12096 _arm_elf_section_data *sdata;
12097 bfd_size_type amt = sizeof (*sdata);
e489d0ae 12098
f592407e
AM		 12099 sdata = bfd_zalloc (abfd, amt);
12100 if (sdata == NULL)
12101 return FALSE;
12102 sec->used_by_bfd = sdata;
12103 }
e489d0ae 12104
957c6e41 12105 record_section_with_arm_elf_section_data (sec);
8e3de13a 12106
e489d0ae
PB		 12107 return _bfd_elf_new_section_hook (abfd, sec);
12108}
12109
12110
12111/* Used to order a list of mapping symbols by address. */
12112
12113static int
12114elf32_arm_compare_mapping (const void * a, const void * b)
12115{
7f6a71ff
JM		 12116 const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a;
12117 const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b;
12118
12119 if (amap->vma > bmap->vma)
12120 return 1;
12121 else if (amap->vma < bmap->vma)
12122 return -1;
12123 else if (amap->type > bmap->type)
12124 /* Ensure results do not depend on the host qsort for objects with
12125 multiple mapping symbols at the same address by sorting on type
12126 after vma. */
12127 return 1;
12128 else if (amap->type < bmap->type)
12129 return -1;
12130 else
12131 return 0;
e489d0ae
PB		 12132}
12133
12134
12135/* Do code byteswapping. Return FALSE afterwards so that the section is
12136 written out as normal. */
12137
12138static bfd_boolean
c7b8f16e 12139elf32_arm_write_section (bfd *output_bfd,
8029a119
NC		 12140 struct bfd_link_info *link_info,
12141 asection *sec,
e489d0ae
PB		 12142 bfd_byte *contents)
12143{
c7b8f16e 12144 int mapcount, errcount;
8e3de13a 12145 _arm_elf_section_data *arm_data;
c7b8f16e 12146 struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
e489d0ae 12147 elf32_arm_section_map *map;
c7b8f16e 12148 elf32_vfp11_erratum_list *errnode;
e489d0ae
PB		 12149 bfd_vma ptr;
12150 bfd_vma end;
c7b8f16e 12151 bfd_vma offset = sec->output_section->vma + sec->output_offset;
e489d0ae
PB		 12152 bfd_byte tmp;
12153 int i;
57e8b36a 12154
8e3de13a
NC		 12155 /* If this section has not been allocated an _arm_elf_section_data
12156 structure then we cannot record anything. */
12157 arm_data = get_arm_elf_section_data (sec);
12158 if (arm_data == NULL)
12159 return FALSE;
12160
12161 mapcount = arm_data->mapcount;
12162 map = arm_data->map;
c7b8f16e
JB		 12163 errcount = arm_data->erratumcount;
12164
12165 if (errcount != 0)
12166 {
12167 unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0;
12168
12169 for (errnode = arm_data->erratumlist; errnode != 0;
12170 errnode = errnode->next)
12171 {
12172 bfd_vma index = errnode->vma - offset;
12173
12174 switch (errnode->type)
12175 {
12176 case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
12177 {
12178 bfd_vma branch_to_veneer;
12179 /* Original condition code of instruction, plus bit mask for
12180 ARM B instruction. */
12181 unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000)
12182 | 0x0a000000;
12183
12184 /* The instruction is before the label. */
12185 index -= 4;
12186
12187 /* Above offset included in -4 below. */
12188 branch_to_veneer = errnode->u.b.veneer->vma
12189 - errnode->vma - 4;
12190
12191 if ((signed) branch_to_veneer < -(1 << 25)
12192 || (signed) branch_to_veneer >= (1 << 25))
12193 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
12194 "range"), output_bfd);
12195
12196 insn |= (branch_to_veneer >> 2) & 0xffffff;
12197 contents[endianflip ^ index] = insn & 0xff;
12198 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
12199 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
12200 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
12201 }
12202 break;
12203
12204 case VFP11_ERRATUM_ARM_VENEER:
12205 {
12206 bfd_vma branch_from_veneer;
12207 unsigned int insn;
12208
12209 /* Take size of veneer into account. */
12210 branch_from_veneer = errnode->u.v.branch->vma
12211 - errnode->vma - 12;
12212
12213 if ((signed) branch_from_veneer < -(1 << 25)
12214 || (signed) branch_from_veneer >= (1 << 25))
12215 (*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
12216 "range"), output_bfd);
12217
12218 /* Original instruction. */
12219 insn = errnode->u.v.branch->u.b.vfp_insn;
12220 contents[endianflip ^ index] = insn & 0xff;
12221 contents[endianflip ^ (index + 1)] = (insn >> 8) & 0xff;
12222 contents[endianflip ^ (index + 2)] = (insn >> 16) & 0xff;
12223 contents[endianflip ^ (index + 3)] = (insn >> 24) & 0xff;
12224
12225 /* Branch back to insn after original insn. */
12226 insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff);
12227 contents[endianflip ^ (index + 4)] = insn & 0xff;
12228 contents[endianflip ^ (index + 5)] = (insn >> 8) & 0xff;
12229 contents[endianflip ^ (index + 6)] = (insn >> 16) & 0xff;
12230 contents[endianflip ^ (index + 7)] = (insn >> 24) & 0xff;
12231 }
12232 break;
12233
12234 default:
12235 abort ();
12236 }
12237 }
12238 }
e489d0ae
PB		 12239
12240 if (mapcount == 0)
12241 return FALSE;
12242
c7b8f16e 12243 if (globals->byteswap_code)
e489d0ae 12244 {
c7b8f16e 12245 qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
57e8b36a 12246
c7b8f16e
JB		 12247 ptr = map[0].vma;
12248 for (i = 0; i < mapcount; i++)
12249 {
12250 if (i == mapcount - 1)
12251 end = sec->size;
12252 else
12253 end = map[i + 1].vma;
e489d0ae 12254
c7b8f16e 12255 switch (map[i].type)
e489d0ae 12256 {
c7b8f16e
JB		 12257 case 'a':
12258 /* Byte swap code words. */
12259 while (ptr + 3 < end)
12260 {
12261 tmp = contents[ptr];
12262 contents[ptr] = contents[ptr + 3];
12263 contents[ptr + 3] = tmp;
12264 tmp = contents[ptr + 1];
12265 contents[ptr + 1] = contents[ptr + 2];
12266 contents[ptr + 2] = tmp;
12267 ptr += 4;
12268 }
12269 break;
e489d0ae 12270
c7b8f16e
JB		 12271 case 't':
12272 /* Byte swap code halfwords. */
12273 while (ptr + 1 < end)
12274 {
12275 tmp = contents[ptr];
12276 contents[ptr] = contents[ptr + 1];
12277 contents[ptr + 1] = tmp;
12278 ptr += 2;
12279 }
12280 break;
12281
12282 case 'd':
12283 /* Leave data alone. */
12284 break;
12285 }
12286 ptr = end;
12287 }
e489d0ae 12288 }
8e3de13a 12289
93204d3a 12290 free (map);
8e3de13a 12291 arm_data->mapcount = 0;
c7b8f16e 12292 arm_data->mapsize = 0;
8e3de13a
NC		 12293 arm_data->map = NULL;
12294 unrecord_section_with_arm_elf_section_data (sec);
12295
e489d0ae
PB		 12296 return FALSE;
12297}
12298
957c6e41
NC		 12299static void
12300unrecord_section_via_map_over_sections (bfd * abfd ATTRIBUTE_UNUSED,
12301 asection * sec,
12302 void * ignore ATTRIBUTE_UNUSED)
12303{
12304 unrecord_section_with_arm_elf_section_data (sec);
12305}
12306
12307static bfd_boolean
12308elf32_arm_close_and_cleanup (bfd * abfd)
12309{
b25e3d87
L		 12310 if (abfd->sections)
12311 bfd_map_over_sections (abfd,
12312 unrecord_section_via_map_over_sections,
12313 NULL);
957c6e41
NC		 12314
12315 return _bfd_elf_close_and_cleanup (abfd);
12316}
12317
b25e3d87
L		 12318static bfd_boolean
12319elf32_arm_bfd_free_cached_info (bfd * abfd)
12320{
12321 if (abfd->sections)
12322 bfd_map_over_sections (abfd,
12323 unrecord_section_via_map_over_sections,
12324 NULL);
12325
12326 return _bfd_free_cached_info (abfd);
12327}
12328
b7693d02
DJ		 12329/* Display STT_ARM_TFUNC symbols as functions. */
12330
12331static void
12332elf32_arm_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED,
12333 asymbol *asym)
12334{
12335 elf_symbol_type *elfsym = (elf_symbol_type *) asym;
12336
12337 if (ELF_ST_TYPE (elfsym->internal_elf_sym.st_info) == STT_ARM_TFUNC)
12338 elfsym->symbol.flags |= BSF_FUNCTION;
12339}
12340
0beaef2b
PB		 12341
12342/* Mangle thumb function symbols as we read them in. */
12343
8384fb8f 12344static bfd_boolean
0beaef2b
PB		 12345elf32_arm_swap_symbol_in (bfd * abfd,
12346 const void *psrc,
12347 const void *pshn,
12348 Elf_Internal_Sym *dst)
12349{
8384fb8f
AM		 12350 if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
12351 return FALSE;
0beaef2b
PB		 12352
12353 /* New EABI objects mark thumb function symbols by setting the low bit of
12354 the address. Turn these into STT_ARM_TFUNC. */
0f88be7a 12355 if ((ELF_ST_TYPE (dst->st_info) == STT_FUNC)
0beaef2b
PB		 12356 && (dst->st_value & 1))
12357 {
12358 dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_ARM_TFUNC);
12359 dst->st_value &= ~(bfd_vma) 1;
12360 }
8384fb8f 12361 return TRUE;
0beaef2b
PB		 12362}
12363
12364
12365/* Mangle thumb function symbols as we write them out. */
12366
12367static void
12368elf32_arm_swap_symbol_out (bfd *abfd,
12369 const Elf_Internal_Sym *src,
12370 void *cdst,
12371 void *shndx)
12372{
12373 Elf_Internal_Sym newsym;
12374
12375 /* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
12376 of the address set, as per the new EABI. We do this unconditionally
12377 because objcopy does not set the elf header flags until after
12378 it writes out the symbol table. */
12379 if (ELF_ST_TYPE (src->st_info) == STT_ARM_TFUNC)
12380 {
12381 newsym = *src;
12382 newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
0fa3dcad
PB		 12383 if (newsym.st_shndx != SHN_UNDEF)
12384 {
12385 /* Do this only for defined symbols. At link type, the static
12386 linker will simulate the work of dynamic linker of resolving
12387 symbols and will carry over the thumbness of found symbols to
12388 the output symbol table. It's not clear how it happens, but
b0fead2b 12389 the thumbness of undefined symbols can well be different at
0fa3dcad
PB		 12390 runtime, and writing '1' for them will be confusing for users
12391 and possibly for dynamic linker itself.
12392 */
12393 newsym.st_value |= 1;
12394 }
906e58ca 12395
0beaef2b
PB		 12396 src = &newsym;
12397 }
12398 bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
12399}
12400
b294bdf8
MM		 12401/* Add the PT_ARM_EXIDX program header. */
12402
12403static bfd_boolean
906e58ca 12404elf32_arm_modify_segment_map (bfd *abfd,
b294bdf8
MM		 12405 struct bfd_link_info *info ATTRIBUTE_UNUSED)
12406{
12407 struct elf_segment_map *m;
12408 asection *sec;
12409
12410 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
12411 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
12412 {
12413 /* If there is already a PT_ARM_EXIDX header, then we do not
12414 want to add another one. This situation arises when running
12415 "strip"; the input binary already has the header. */
12416 m = elf_tdata (abfd)->segment_map;
12417 while (m && m->p_type != PT_ARM_EXIDX)
12418 m = m->next;
12419 if (!m)
12420 {
12421 m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
12422 if (m == NULL)
12423 return FALSE;
12424 m->p_type = PT_ARM_EXIDX;
12425 m->count = 1;
12426 m->sections[0] = sec;
12427
12428 m->next = elf_tdata (abfd)->segment_map;
12429 elf_tdata (abfd)->segment_map = m;
12430 }
12431 }
12432
12433 return TRUE;
12434}
12435
12436/* We may add a PT_ARM_EXIDX program header. */
12437
12438static int
a6b96beb
AM		 12439elf32_arm_additional_program_headers (bfd *abfd,
12440 struct bfd_link_info *info ATTRIBUTE_UNUSED)
b294bdf8
MM		 12441{
12442 asection *sec;
12443
12444 sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
12445 if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
12446 return 1;
12447 else
12448 return 0;
12449}
12450
fcb93ecf 12451/* We have two function types: STT_FUNC and STT_ARM_TFUNC. */
906e58ca 12452
fcb93ecf
PB		 12453static bfd_boolean
12454elf32_arm_is_function_type (unsigned int type)
12455{
0f88be7a 12456 return (type == STT_FUNC) || (type == STT_ARM_TFUNC);
fcb93ecf
PB		 12457}
12458
0beaef2b 12459/* We use this to override swap_symbol_in and swap_symbol_out. */
906e58ca
NC		 12460const struct elf_size_info elf32_arm_size_info =
12461{
0beaef2b
PB		 12462 sizeof (Elf32_External_Ehdr),
12463 sizeof (Elf32_External_Phdr),
12464 sizeof (Elf32_External_Shdr),
12465 sizeof (Elf32_External_Rel),
12466 sizeof (Elf32_External_Rela),
12467 sizeof (Elf32_External_Sym),
12468 sizeof (Elf32_External_Dyn),
12469 sizeof (Elf_External_Note),
12470 4,
12471 1,
12472 32, 2,
12473 ELFCLASS32, EV_CURRENT,
12474 bfd_elf32_write_out_phdrs,
12475 bfd_elf32_write_shdrs_and_ehdr,
1489a3a0 12476 bfd_elf32_checksum_contents,
0beaef2b
PB		 12477 bfd_elf32_write_relocs,
12478 elf32_arm_swap_symbol_in,
12479 elf32_arm_swap_symbol_out,
12480 bfd_elf32_slurp_reloc_table,
12481 bfd_elf32_slurp_symbol_table,
12482 bfd_elf32_swap_dyn_in,
12483 bfd_elf32_swap_dyn_out,
12484 bfd_elf32_swap_reloc_in,
12485 bfd_elf32_swap_reloc_out,
12486 bfd_elf32_swap_reloca_in,
12487 bfd_elf32_swap_reloca_out
12488};
12489
252b5132
RH		 12490#define ELF_ARCH bfd_arch_arm
12491#define ELF_MACHINE_CODE EM_ARM
d0facd1b
NC		 12492#ifdef __QNXTARGET__
12493#define ELF_MAXPAGESIZE 0x1000
12494#else
f21f3fe0 12495#define ELF_MAXPAGESIZE 0x8000
d0facd1b 12496#endif
b1342370 12497#define ELF_MINPAGESIZE 0x1000
24718e3b 12498#define ELF_COMMONPAGESIZE 0x1000
252b5132 12499
ba93b8ac
DJ		 12500#define bfd_elf32_mkobject elf32_arm_mkobject
12501
99e4ae17
AJ		 12502#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
12503#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
252b5132
RH		 12504#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
12505#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
12506#define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
906e58ca 12507#define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free
dc810e39 12508#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
157090f7 12509#define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
252b5132 12510#define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
4ab527b0 12511#define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
e489d0ae 12512#define bfd_elf32_new_section_hook elf32_arm_new_section_hook
3c9458e9 12513#define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
957c6e41 12514#define bfd_elf32_close_and_cleanup elf32_arm_close_and_cleanup
b25e3d87 12515#define bfd_elf32_bfd_free_cached_info elf32_arm_bfd_free_cached_info
3e6b1042 12516#define bfd_elf32_bfd_final_link elf32_arm_final_link
252b5132
RH		 12517
12518#define elf_backend_get_symbol_type elf32_arm_get_symbol_type
12519#define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
6a5bb875 12520#define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
252b5132
RH		 12521#define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
12522#define elf_backend_check_relocs elf32_arm_check_relocs
dc810e39 12523#define elf_backend_relocate_section elf32_arm_relocate_section
e489d0ae 12524#define elf_backend_write_section elf32_arm_write_section
252b5132 12525#define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
5e681ec4 12526#define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
252b5132
RH		 12527#define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
12528#define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
12529#define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
74541ad4 12530#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
ba96a88f 12531#define elf_backend_post_process_headers elf32_arm_post_process_headers
99e4ae17 12532#define elf_backend_reloc_type_class elf32_arm_reloc_type_class
c178919b 12533#define elf_backend_object_p elf32_arm_object_p
e16bb312 12534#define elf_backend_section_flags elf32_arm_section_flags
40a18ebd
NC		 12535#define elf_backend_fake_sections elf32_arm_fake_sections
12536#define elf_backend_section_from_shdr elf32_arm_section_from_shdr
e16bb312 12537#define elf_backend_final_write_processing elf32_arm_final_write_processing
5e681ec4 12538#define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
b7693d02 12539#define elf_backend_symbol_processing elf32_arm_symbol_processing
0beaef2b 12540#define elf_backend_size_info elf32_arm_size_info
b294bdf8 12541#define elf_backend_modify_segment_map elf32_arm_modify_segment_map
906e58ca
NC		 12542#define elf_backend_additional_program_headers elf32_arm_additional_program_headers
12543#define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms
12544#define elf_backend_begin_write_processing elf32_arm_begin_write_processing
12545#define elf_backend_is_function_type elf32_arm_is_function_type
12546
12547#define elf_backend_can_refcount 1
12548#define elf_backend_can_gc_sections 1
12549#define elf_backend_plt_readonly 1
12550#define elf_backend_want_got_plt 1
12551#define elf_backend_want_plt_sym 0
12552#define elf_backend_may_use_rel_p 1
12553#define elf_backend_may_use_rela_p 0
4e7fd91e 12554#define elf_backend_default_use_rela_p 0
252b5132 12555
04f7c78d 12556#define elf_backend_got_header_size 12
04f7c78d 12557
906e58ca
NC		 12558#undef elf_backend_obj_attrs_vendor
12559#define elf_backend_obj_attrs_vendor "aeabi"
12560#undef elf_backend_obj_attrs_section
12561#define elf_backend_obj_attrs_section ".ARM.attributes"
12562#undef elf_backend_obj_attrs_arg_type
12563#define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
12564#undef elf_backend_obj_attrs_section_type
104d59d1 12565#define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
5aa6ff7c 12566#define elf_backend_obj_attrs_order elf32_arm_obj_attrs_order
104d59d1 12567
252b5132 12568#include "elf32-target.h"
7f266840 12569
906e58ca 12570/* VxWorks Targets. */
4e7fd91e 12571
906e58ca 12572#undef TARGET_LITTLE_SYM
4e7fd91e 12573#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
906e58ca 12574#undef TARGET_LITTLE_NAME
4e7fd91e 12575#define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
906e58ca 12576#undef TARGET_BIG_SYM
4e7fd91e 12577#define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
906e58ca 12578#undef TARGET_BIG_NAME
4e7fd91e
PB		 12579#define TARGET_BIG_NAME "elf32-bigarm-vxworks"
12580
12581/* Like elf32_arm_link_hash_table_create -- but overrides
12582 appropriately for VxWorks. */
906e58ca 12583
4e7fd91e
PB		 12584static struct bfd_link_hash_table *
12585elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
12586{
12587 struct bfd_link_hash_table *ret;
12588
12589 ret = elf32_arm_link_hash_table_create (abfd);
12590 if (ret)
12591 {
12592 struct elf32_arm_link_hash_table *htab
00a97672 12593 = (struct elf32_arm_link_hash_table *) ret;
4e7fd91e 12594 htab->use_rel = 0;
00a97672 12595 htab->vxworks_p = 1;
4e7fd91e
PB		 12596 }
12597 return ret;
906e58ca 12598}
4e7fd91e 12599
00a97672
RS		 12600static void
12601elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
12602{
12603 elf32_arm_final_write_processing (abfd, linker);
12604 elf_vxworks_final_write_processing (abfd, linker);
12605}
12606
906e58ca 12607#undef elf32_bed
4e7fd91e
PB		 12608#define elf32_bed elf32_arm_vxworks_bed
12609
906e58ca
NC		 12610#undef bfd_elf32_bfd_link_hash_table_create
12611#define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create
12612#undef elf_backend_add_symbol_hook
12613#define elf_backend_add_symbol_hook elf_vxworks_add_symbol_hook
12614#undef elf_backend_final_write_processing
12615#define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing
12616#undef elf_backend_emit_relocs
12617#define elf_backend_emit_relocs elf_vxworks_emit_relocs
4e7fd91e 12618
906e58ca 12619#undef elf_backend_may_use_rel_p
00a97672 12620#define elf_backend_may_use_rel_p 0
906e58ca 12621#undef elf_backend_may_use_rela_p
00a97672 12622#define elf_backend_may_use_rela_p 1
906e58ca 12623#undef elf_backend_default_use_rela_p
00a97672 12624#define elf_backend_default_use_rela_p 1
906e58ca 12625#undef elf_backend_want_plt_sym
00a97672 12626#define elf_backend_want_plt_sym 1
906e58ca 12627#undef ELF_MAXPAGESIZE
00a97672 12628#define ELF_MAXPAGESIZE 0x1000
4e7fd91e
PB		 12629
12630#include "elf32-target.h"
12631
12632
906e58ca 12633/* Symbian OS Targets. */
7f266840 12634
906e58ca 12635#undef TARGET_LITTLE_SYM
7f266840 12636#define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
906e58ca 12637#undef TARGET_LITTLE_NAME
7f266840 12638#define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
906e58ca 12639#undef TARGET_BIG_SYM
7f266840 12640#define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
906e58ca 12641#undef TARGET_BIG_NAME
7f266840
DJ		 12642#define TARGET_BIG_NAME "elf32-bigarm-symbian"
12643
12644/* Like elf32_arm_link_hash_table_create -- but overrides
12645 appropriately for Symbian OS. */
906e58ca 12646
7f266840
DJ		 12647static struct bfd_link_hash_table *
12648elf32_arm_symbian_link_hash_table_create (bfd *abfd)
12649{
12650 struct bfd_link_hash_table *ret;
12651
12652 ret = elf32_arm_link_hash_table_create (abfd);
12653 if (ret)
12654 {
12655 struct elf32_arm_link_hash_table *htab
12656 = (struct elf32_arm_link_hash_table *)ret;
12657 /* There is no PLT header for Symbian OS. */
12658 htab->plt_header_size = 0;
95720a86
DJ		 12659 /* The PLT entries are each one instruction and one word. */
12660 htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry);
7f266840 12661 htab->symbian_p = 1;
33bfe774
JB		 12662 /* Symbian uses armv5t or above, so use_blx is always true. */
12663 htab->use_blx = 1;
67687978 12664 htab->root.is_relocatable_executable = 1;
7f266840
DJ		 12665 }
12666 return ret;
906e58ca 12667}
7f266840 12668
b35d266b 12669static const struct bfd_elf_special_section
551b43fd 12670elf32_arm_symbian_special_sections[] =
7f266840 12671{
5cd3778d
MM		 12672 /* In a BPABI executable, the dynamic linking sections do not go in
12673 the loadable read-only segment. The post-linker may wish to
12674 refer to these sections, but they are not part of the final
12675 program image. */
0112cd26
NC		 12676 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 },
12677 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 },
12678 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 },
12679 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 },
12680 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 },
5cd3778d
MM		 12681 /* These sections do not need to be writable as the SymbianOS
12682 postlinker will arrange things so that no dynamic relocation is
12683 required. */
0112cd26
NC		 12684 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC },
12685 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC },
12686 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
12687 { NULL, 0, 0, 0, 0 }
7f266840
DJ		 12688};
12689
c3c76620 12690static void
906e58ca 12691elf32_arm_symbian_begin_write_processing (bfd *abfd,
a4fd1a8e 12692 struct bfd_link_info *link_info)
c3c76620
MM		 12693{
12694 /* BPABI objects are never loaded directly by an OS kernel; they are
12695 processed by a postlinker first, into an OS-specific format. If
12696 the D_PAGED bit is set on the file, BFD will align segments on
12697 page boundaries, so that an OS can directly map the file. With
12698 BPABI objects, that just results in wasted space. In addition,
12699 because we clear the D_PAGED bit, map_sections_to_segments will
12700 recognize that the program headers should not be mapped into any
12701 loadable segment. */
12702 abfd->flags &= ~D_PAGED;
906e58ca 12703 elf32_arm_begin_write_processing (abfd, link_info);
c3c76620 12704}
7f266840
DJ		 12705
12706static bfd_boolean
906e58ca 12707elf32_arm_symbian_modify_segment_map (bfd *abfd,
b294bdf8 12708 struct bfd_link_info *info)
7f266840
DJ		 12709{
12710 struct elf_segment_map *m;
12711 asection *dynsec;
12712
7f266840
DJ		 12713 /* BPABI shared libraries and executables should have a PT_DYNAMIC
12714 segment. However, because the .dynamic section is not marked
12715 with SEC_LOAD, the generic ELF code will not create such a
12716 segment. */
12717 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
12718 if (dynsec)
12719 {
8ded5a0f
AM		 12720 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
12721 if (m->p_type == PT_DYNAMIC)
12722 break;
12723
12724 if (m == NULL)
12725 {
12726 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
12727 m->next = elf_tdata (abfd)->segment_map;
12728 elf_tdata (abfd)->segment_map = m;
12729 }
7f266840
DJ		 12730 }
12731
b294bdf8
MM		 12732 /* Also call the generic arm routine. */
12733 return elf32_arm_modify_segment_map (abfd, info);
7f266840
DJ		 12734}
12735
95720a86
DJ		 12736/* Return address for Ith PLT stub in section PLT, for relocation REL
12737 or (bfd_vma) -1 if it should not be included. */
12738
12739static bfd_vma
12740elf32_arm_symbian_plt_sym_val (bfd_vma i, const asection *plt,
12741 const arelent *rel ATTRIBUTE_UNUSED)
12742{
12743 return plt->vma + 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry) * i;
12744}
12745
12746
8029a119 12747#undef elf32_bed
7f266840
DJ		 12748#define elf32_bed elf32_arm_symbian_bed
12749
12750/* The dynamic sections are not allocated on SymbianOS; the postlinker
12751 will process them and then discard them. */
906e58ca 12752#undef ELF_DYNAMIC_SEC_FLAGS
7f266840
DJ		 12753#define ELF_DYNAMIC_SEC_FLAGS \
12754 (SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
12755
00a97672 12756#undef elf_backend_add_symbol_hook
00a97672 12757#undef elf_backend_emit_relocs
c3c76620 12758
906e58ca
NC		 12759#undef bfd_elf32_bfd_link_hash_table_create
12760#define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create
12761#undef elf_backend_special_sections
12762#define elf_backend_special_sections elf32_arm_symbian_special_sections
12763#undef elf_backend_begin_write_processing
12764#define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing
12765#undef elf_backend_final_write_processing
12766#define elf_backend_final_write_processing elf32_arm_final_write_processing
12767
12768#undef elf_backend_modify_segment_map
7f266840
DJ		 12769#define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
12770
12771/* There is no .got section for BPABI objects, and hence no header. */
906e58ca 12772#undef elf_backend_got_header_size
7f266840
DJ		 12773#define elf_backend_got_header_size 0
12774
12775/* Similarly, there is no .got.plt section. */
906e58ca 12776#undef elf_backend_want_got_plt
7f266840
DJ		 12777#define elf_backend_want_got_plt 0
12778
906e58ca 12779#undef elf_backend_plt_sym_val
95720a86
DJ		 12780#define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val
12781
906e58ca 12782#undef elf_backend_may_use_rel_p
00a97672 12783#define elf_backend_may_use_rel_p 1
906e58ca 12784#undef elf_backend_may_use_rela_p
00a97672 12785#define elf_backend_may_use_rela_p 0
906e58ca 12786#undef elf_backend_default_use_rela_p
00a97672 12787#define elf_backend_default_use_rela_p 0
906e58ca 12788#undef elf_backend_want_plt_sym
00a97672 12789#define elf_backend_want_plt_sym 0
906e58ca 12790#undef ELF_MAXPAGESIZE
00a97672 12791#define ELF_MAXPAGESIZE 0x8000
4e7fd91e 12792
7f266840 12793#include "elf32-target.h"
GDB Binutils - Deliverables
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